b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From f7f94b1e7e9c6044a23bab1c5e773f6259f2d3e0 Mon Sep 17 00:00:00 2001 |
| 2 | From: Madalin Bucur <madalin.bucur@nxp.com> |
| 3 | Date: Wed, 10 May 2017 16:39:42 +0300 |
| 4 | Subject: [PATCH] dpa: SDK DPAA 1.x Ethernet driver |
| 5 | |
| 6 | Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com> |
| 7 | --- |
| 8 | drivers/net/ethernet/freescale/sdk_dpaa/Kconfig | 173 ++ |
| 9 | drivers/net/ethernet/freescale/sdk_dpaa/Makefile | 46 + |
| 10 | .../net/ethernet/freescale/sdk_dpaa/dpaa_1588.c | 580 ++++++ |
| 11 | .../net/ethernet/freescale/sdk_dpaa/dpaa_1588.h | 138 ++ |
| 12 | .../net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.c | 180 ++ |
| 13 | .../net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.h | 43 + |
| 14 | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c | 1210 ++++++++++++ |
| 15 | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h | 697 +++++++ |
| 16 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_base.c | 263 +++ |
| 17 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_base.h | 50 + |
| 18 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c | 1991 ++++++++++++++++++++ |
| 19 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h | 236 +++ |
| 20 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_common.c | 1812 ++++++++++++++++++ |
| 21 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_common.h | 226 +++ |
| 22 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c | 381 ++++ |
| 23 | .../net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 1113 +++++++++++ |
| 24 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_sysfs.c | 278 +++ |
| 25 | .../ethernet/freescale/sdk_dpaa/dpaa_eth_trace.h | 144 ++ |
| 26 | .../net/ethernet/freescale/sdk_dpaa/dpaa_ethtool.c | 544 ++++++ |
| 27 | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_ptp.c | 290 +++ |
| 28 | drivers/net/ethernet/freescale/sdk_dpaa/mac-api.c | 909 +++++++++ |
| 29 | drivers/net/ethernet/freescale/sdk_dpaa/mac.c | 489 +++++ |
| 30 | drivers/net/ethernet/freescale/sdk_dpaa/mac.h | 135 ++ |
| 31 | .../net/ethernet/freescale/sdk_dpaa/offline_port.c | 848 +++++++++ |
| 32 | .../net/ethernet/freescale/sdk_dpaa/offline_port.h | 59 + |
| 33 | 25 files changed, 12835 insertions(+) |
| 34 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/Kconfig |
| 35 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/Makefile |
| 36 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_1588.c |
| 37 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_1588.h |
| 38 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.c |
| 39 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.h |
| 40 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c |
| 41 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h |
| 42 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c |
| 43 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h |
| 44 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c |
| 45 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h |
| 46 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c |
| 47 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h |
| 48 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c |
| 49 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c |
| 50 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sysfs.c |
| 51 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_trace.h |
| 52 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_ethtool.c |
| 53 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/dpaa_ptp.c |
| 54 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/mac-api.c |
| 55 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/mac.c |
| 56 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/mac.h |
| 57 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/offline_port.c |
| 58 | create mode 100644 drivers/net/ethernet/freescale/sdk_dpaa/offline_port.h |
| 59 | |
| 60 | --- /dev/null |
| 61 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/Kconfig |
| 62 | @@ -0,0 +1,173 @@ |
| 63 | +menuconfig FSL_SDK_DPAA_ETH |
| 64 | + tristate "DPAA Ethernet" |
| 65 | + depends on (FSL_SOC || ARM64 || ARM) && FSL_SDK_BMAN && FSL_SDK_QMAN && FSL_SDK_FMAN && !FSL_DPAA_ETH |
| 66 | + select PHYLIB |
| 67 | + help |
| 68 | + Data Path Acceleration Architecture Ethernet driver, |
| 69 | + supporting the Freescale QorIQ chips. |
| 70 | + Depends on Freescale Buffer Manager and Queue Manager |
| 71 | + driver and Frame Manager Driver. |
| 72 | + |
| 73 | +if FSL_SDK_DPAA_ETH |
| 74 | + |
| 75 | +config FSL_DPAA_HOOKS |
| 76 | + bool "DPAA Ethernet driver hooks" |
| 77 | + |
| 78 | +config FSL_DPAA_CEETM |
| 79 | + bool "DPAA CEETM QoS" |
| 80 | + depends on NET_SCHED |
| 81 | + default n |
| 82 | + help |
| 83 | + Enable QoS offloading support through the CEETM hardware block. |
| 84 | + |
| 85 | +config FSL_DPAA_OFFLINE_PORTS |
| 86 | + bool "Offline Ports support" |
| 87 | + depends on FSL_SDK_DPAA_ETH |
| 88 | + default y |
| 89 | + help |
| 90 | + The Offline Parsing / Host Command ports (short: OH ports, of Offline ports) provide |
| 91 | + most of the functionality of the regular, online ports, except they receive their |
| 92 | + frames from a core or an accelerator on the SoC, via QMan frame queues, |
| 93 | + rather than directly from the network. |
| 94 | + Offline ports are configured via PCD (Parse-Classify-Distribute) schemes, just like |
| 95 | + any online FMan port. They deliver the processed frames to frame queues, according |
| 96 | + to the applied PCD configurations. |
| 97 | + |
| 98 | + Choosing this feature will not impact the functionality and/or performance of the system, |
| 99 | + so it is safe to have it. |
| 100 | + |
| 101 | +config FSL_DPAA_ADVANCED_DRIVERS |
| 102 | + bool "Advanced DPAA Ethernet drivers" |
| 103 | + depends on FSL_SDK_DPAA_ETH |
| 104 | + default y |
| 105 | + help |
| 106 | + Besides the standard DPAA Ethernet driver the DPAA Proxy initialization driver |
| 107 | + is needed to support advanced scenarios. Select this to also build the advanced |
| 108 | + drivers. |
| 109 | + |
| 110 | +config FSL_DPAA_ETH_JUMBO_FRAME |
| 111 | + bool "Optimize for jumbo frames" |
| 112 | + default n |
| 113 | + help |
| 114 | + Optimize the DPAA Ethernet driver throughput for large frames |
| 115 | + termination traffic (e.g. 4K and above). |
| 116 | + NOTE: This option can only be used if FSL_FM_MAX_FRAME_SIZE |
| 117 | + is set to 9600 bytes. |
| 118 | + Using this option in combination with small frames increases |
| 119 | + significantly the driver's memory footprint and may even deplete |
| 120 | + the system memory. Also, the skb truesize is altered and messages |
| 121 | + from the stack that warn against this are bypassed. |
| 122 | + This option is not available on LS1043. |
| 123 | + |
| 124 | +config FSL_DPAA_TS |
| 125 | + bool "Linux compliant timestamping" |
| 126 | + depends on FSL_SDK_DPAA_ETH |
| 127 | + default n |
| 128 | + help |
| 129 | + Enable Linux API compliant timestamping support. |
| 130 | + |
| 131 | +config FSL_DPAA_1588 |
| 132 | + bool "IEEE 1588-compliant timestamping" |
| 133 | + depends on FSL_SDK_DPAA_ETH |
| 134 | + select FSL_DPAA_TS |
| 135 | + default n |
| 136 | + help |
| 137 | + Enable IEEE1588 support code. |
| 138 | + |
| 139 | +config FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 140 | + bool "Use driver's Tx queue selection mechanism" |
| 141 | + default y |
| 142 | + depends on FSL_SDK_DPAA_ETH |
| 143 | + help |
| 144 | + The DPAA-Ethernet driver defines a ndo_select_queue() callback for optimal selection |
| 145 | + of the egress FQ. That will override the XPS support for this netdevice. |
| 146 | + If for whatever reason you want to be in control of the egress FQ-to-CPU selection and mapping, |
| 147 | + or simply don't want to use the driver's ndo_select_queue() callback, then unselect this |
| 148 | + and use the standard XPS support instead. |
| 149 | + |
| 150 | +config FSL_DPAA_ETH_MAX_BUF_COUNT |
| 151 | + int "Maximum nuber of buffers in private bpool" |
| 152 | + depends on FSL_SDK_DPAA_ETH |
| 153 | + range 64 2048 |
| 154 | + default "128" |
| 155 | + help |
| 156 | + The maximum number of buffers to be by default allocated in the DPAA-Ethernet private port's |
| 157 | + buffer pool. One needn't normally modify this, as it has probably been tuned for performance |
| 158 | + already. This cannot be lower than DPAA_ETH_REFILL_THRESHOLD. |
| 159 | + |
| 160 | +config FSL_DPAA_ETH_REFILL_THRESHOLD |
| 161 | + int "Private bpool refill threshold" |
| 162 | + depends on FSL_SDK_DPAA_ETH |
| 163 | + range 32 FSL_DPAA_ETH_MAX_BUF_COUNT |
| 164 | + default "80" |
| 165 | + help |
| 166 | + The DPAA-Ethernet driver will start replenishing buffer pools whose count |
| 167 | + falls below this threshold. This must be related to DPAA_ETH_MAX_BUF_COUNT. One needn't normally |
| 168 | + modify this value unless one has very specific performance reasons. |
| 169 | + |
| 170 | +config FSL_DPAA_CS_THRESHOLD_1G |
| 171 | + hex "Egress congestion threshold on 1G ports" |
| 172 | + depends on FSL_SDK_DPAA_ETH |
| 173 | + range 0x1000 0x10000000 |
| 174 | + default "0x06000000" |
| 175 | + help |
| 176 | + The size in bytes of the egress Congestion State notification threshold on 1G ports. |
| 177 | + The 1G dTSECs can quite easily be flooded by cores doing Tx in a tight loop |
| 178 | + (e.g. by sending UDP datagrams at "while(1) speed"), |
| 179 | + and the larger the frame size, the more acute the problem. |
| 180 | + So we have to find a balance between these factors: |
| 181 | + - avoiding the device staying congested for a prolonged time (risking |
| 182 | + the netdev watchdog to fire - see also the tx_timeout module param); |
| 183 | + - affecting performance of protocols such as TCP, which otherwise |
| 184 | + behave well under the congestion notification mechanism; |
| 185 | + - preventing the Tx cores from tightly-looping (as if the congestion |
| 186 | + threshold was too low to be effective); |
| 187 | + - running out of memory if the CS threshold is set too high. |
| 188 | + |
| 189 | +config FSL_DPAA_CS_THRESHOLD_10G |
| 190 | + hex "Egress congestion threshold on 10G ports" |
| 191 | + depends on FSL_SDK_DPAA_ETH |
| 192 | + range 0x1000 0x20000000 |
| 193 | + default "0x10000000" |
| 194 | + help |
| 195 | + The size in bytes of the egress Congestion State notification threshold on 10G ports. |
| 196 | + |
| 197 | +config FSL_DPAA_INGRESS_CS_THRESHOLD |
| 198 | + hex "Ingress congestion threshold on FMan ports" |
| 199 | + depends on FSL_SDK_DPAA_ETH |
| 200 | + default "0x10000000" |
| 201 | + help |
| 202 | + The size in bytes of the ingress tail-drop threshold on FMan ports. |
| 203 | + Traffic piling up above this value will be rejected by QMan and discarded by FMan. |
| 204 | + |
| 205 | +config FSL_DPAA_ETH_DEBUGFS |
| 206 | + bool "DPAA Ethernet debugfs interface" |
| 207 | + depends on DEBUG_FS && FSL_SDK_DPAA_ETH |
| 208 | + default y |
| 209 | + help |
| 210 | + This option compiles debugfs code for the DPAA Ethernet driver. |
| 211 | + |
| 212 | +config FSL_DPAA_ETH_DEBUG |
| 213 | + bool "DPAA Ethernet Debug Support" |
| 214 | + depends on FSL_SDK_DPAA_ETH |
| 215 | + default n |
| 216 | + help |
| 217 | + This option compiles debug code for the DPAA Ethernet driver. |
| 218 | + |
| 219 | +config FSL_DPAA_DBG_LOOP |
| 220 | + bool "DPAA Ethernet Debug loopback" |
| 221 | + depends on FSL_DPAA_ETH_DEBUGFS && FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 222 | + default n |
| 223 | + help |
| 224 | + This option allows to divert all received traffic on a certain interface A towards a |
| 225 | + selected interface B. This option is used to benchmark the HW + Ethernet driver in |
| 226 | + isolation from the Linux networking stack. The loops are controlled by debugfs entries, |
| 227 | + one for each interface. By default all loops are disabled (target value is -1). I.e. to |
| 228 | + change the loop setting for interface 4 and divert all received traffic to interface 5 |
| 229 | + write Tx interface number in the receive interface debugfs file: |
| 230 | + # cat /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop |
| 231 | + 4->-1 |
| 232 | + # echo 5 > /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop |
| 233 | + # cat /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop |
| 234 | + 4->5 |
| 235 | +endif # FSL_SDK_DPAA_ETH |
| 236 | --- /dev/null |
| 237 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/Makefile |
| 238 | @@ -0,0 +1,46 @@ |
| 239 | +# |
| 240 | +# Makefile for the Freescale Ethernet controllers |
| 241 | +# |
| 242 | +ccflags-y += -DVERSION=\"\" |
| 243 | +# |
| 244 | +# Include netcomm SW specific definitions |
| 245 | +include $(srctree)/drivers/net/ethernet/freescale/sdk_fman/ncsw_config.mk |
| 246 | + |
| 247 | +ccflags-y += -I$(NET_DPA) |
| 248 | + |
| 249 | +obj-$(CONFIG_FSL_SDK_DPAA_ETH) += fsl_mac.o fsl_dpa.o |
| 250 | +obj-$(CONFIG_PTP_1588_CLOCK_DPAA) += dpaa_ptp.o |
| 251 | + |
| 252 | +fsl_dpa-objs += dpaa_ethtool.o dpaa_eth_sysfs.o dpaa_eth.o dpaa_eth_sg.o dpaa_eth_common.o |
| 253 | +ifeq ($(CONFIG_FSL_DPAA_DBG_LOOP),y) |
| 254 | +fsl_dpa-objs += dpaa_debugfs.o |
| 255 | +endif |
| 256 | +ifeq ($(CONFIG_FSL_DPAA_1588),y) |
| 257 | +fsl_dpa-objs += dpaa_1588.o |
| 258 | +endif |
| 259 | +ifeq ($(CONFIG_FSL_DPAA_CEETM),y) |
| 260 | +ccflags-y += -Idrivers/net/ethernet/freescale/sdk_fman/src/wrapper |
| 261 | +fsl_dpa-objs += dpaa_eth_ceetm.o |
| 262 | +endif |
| 263 | + |
| 264 | +fsl_mac-objs += mac.o mac-api.o |
| 265 | + |
| 266 | +# Advanced drivers |
| 267 | +ifeq ($(CONFIG_FSL_DPAA_ADVANCED_DRIVERS),y) |
| 268 | +obj-$(CONFIG_FSL_SDK_DPAA_ETH) += fsl_advanced.o |
| 269 | +obj-$(CONFIG_FSL_SDK_DPAA_ETH) += fsl_proxy.o |
| 270 | + |
| 271 | +fsl_advanced-objs += dpaa_eth_base.o |
| 272 | +# suport for multiple drivers per kernel module comes in kernel 3.14 |
| 273 | +# so we are forced to generate several modules for the advanced drivers |
| 274 | +fsl_proxy-objs += dpaa_eth_proxy.o |
| 275 | + |
| 276 | +ifeq ($(CONFIG_FSL_DPAA_OFFLINE_PORTS),y) |
| 277 | +obj-$(CONFIG_FSL_SDK_DPAA_ETH) += fsl_oh.o |
| 278 | + |
| 279 | +fsl_oh-objs += offline_port.o |
| 280 | +endif |
| 281 | +endif |
| 282 | + |
| 283 | +# Needed by the tracing framework |
| 284 | +CFLAGS_dpaa_eth.o := -I$(src) |
| 285 | --- /dev/null |
| 286 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_1588.c |
| 287 | @@ -0,0 +1,580 @@ |
| 288 | +/* Copyright (C) 2011 Freescale Semiconductor, Inc. |
| 289 | + * Copyright (C) 2009 IXXAT Automation, GmbH |
| 290 | + * |
| 291 | + * DPAA Ethernet Driver -- IEEE 1588 interface functionality |
| 292 | + * |
| 293 | + * This program is free software; you can redistribute it and/or modify |
| 294 | + * it under the terms of the GNU General Public License as published by |
| 295 | + * the Free Software Foundation; either version 2 of the License, or |
| 296 | + * (at your option) any later version. |
| 297 | + * |
| 298 | + * This program is distributed in the hope that it will be useful, |
| 299 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 300 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 301 | + * GNU General Public License for more details. |
| 302 | + * |
| 303 | + * You should have received a copy of the GNU General Public License along |
| 304 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 305 | + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 306 | + * |
| 307 | + */ |
| 308 | +#include <linux/io.h> |
| 309 | +#include <linux/device.h> |
| 310 | +#include <linux/fs.h> |
| 311 | +#include <linux/vmalloc.h> |
| 312 | +#include <linux/spinlock.h> |
| 313 | +#include <linux/ip.h> |
| 314 | +#include <linux/ipv6.h> |
| 315 | +#include <linux/udp.h> |
| 316 | +#include <asm/div64.h> |
| 317 | +#include "dpaa_eth.h" |
| 318 | +#include "dpaa_eth_common.h" |
| 319 | +#include "dpaa_1588.h" |
| 320 | +#include "mac.h" |
| 321 | + |
| 322 | +static int dpa_ptp_init_circ(struct dpa_ptp_circ_buf *ptp_buf, u32 size) |
| 323 | +{ |
| 324 | + struct circ_buf *circ_buf = &ptp_buf->circ_buf; |
| 325 | + |
| 326 | + circ_buf->buf = vmalloc(sizeof(struct dpa_ptp_data) * size); |
| 327 | + if (!circ_buf->buf) |
| 328 | + return 1; |
| 329 | + |
| 330 | + circ_buf->head = 0; |
| 331 | + circ_buf->tail = 0; |
| 332 | + ptp_buf->size = size; |
| 333 | + spin_lock_init(&ptp_buf->ptp_lock); |
| 334 | + |
| 335 | + return 0; |
| 336 | +} |
| 337 | + |
| 338 | +static void dpa_ptp_reset_circ(struct dpa_ptp_circ_buf *ptp_buf, u32 size) |
| 339 | +{ |
| 340 | + struct circ_buf *circ_buf = &ptp_buf->circ_buf; |
| 341 | + |
| 342 | + circ_buf->head = 0; |
| 343 | + circ_buf->tail = 0; |
| 344 | + ptp_buf->size = size; |
| 345 | +} |
| 346 | + |
| 347 | +static int dpa_ptp_insert(struct dpa_ptp_circ_buf *ptp_buf, |
| 348 | + struct dpa_ptp_data *data) |
| 349 | +{ |
| 350 | + struct circ_buf *circ_buf = &ptp_buf->circ_buf; |
| 351 | + int size = ptp_buf->size; |
| 352 | + struct dpa_ptp_data *tmp; |
| 353 | + unsigned long flags; |
| 354 | + int head, tail; |
| 355 | + |
| 356 | + spin_lock_irqsave(&ptp_buf->ptp_lock, flags); |
| 357 | + |
| 358 | + head = circ_buf->head; |
| 359 | + tail = circ_buf->tail; |
| 360 | + |
| 361 | + if (CIRC_SPACE(head, tail, size) <= 0) |
| 362 | + circ_buf->tail = (tail + 1) & (size - 1); |
| 363 | + |
| 364 | + tmp = (struct dpa_ptp_data *)(circ_buf->buf) + head; |
| 365 | + memcpy(tmp, data, sizeof(struct dpa_ptp_data)); |
| 366 | + |
| 367 | + circ_buf->head = (head + 1) & (size - 1); |
| 368 | + |
| 369 | + spin_unlock_irqrestore(&ptp_buf->ptp_lock, flags); |
| 370 | + |
| 371 | + return 0; |
| 372 | +} |
| 373 | + |
| 374 | +static int dpa_ptp_is_ident_match(struct dpa_ptp_ident *dst, |
| 375 | + struct dpa_ptp_ident *src) |
| 376 | +{ |
| 377 | + int ret; |
| 378 | + |
| 379 | + if ((dst->version != src->version) || (dst->msg_type != src->msg_type)) |
| 380 | + return 0; |
| 381 | + |
| 382 | + if ((dst->netw_prot == src->netw_prot) |
| 383 | + || src->netw_prot == DPA_PTP_PROT_DONTCARE) { |
| 384 | + if (dst->seq_id != src->seq_id) |
| 385 | + return 0; |
| 386 | + |
| 387 | + ret = memcmp(dst->snd_port_id, src->snd_port_id, |
| 388 | + DPA_PTP_SOURCE_PORT_LENGTH); |
| 389 | + if (ret) |
| 390 | + return 0; |
| 391 | + else |
| 392 | + return 1; |
| 393 | + } |
| 394 | + |
| 395 | + return 0; |
| 396 | +} |
| 397 | + |
| 398 | +static int dpa_ptp_find_and_remove(struct dpa_ptp_circ_buf *ptp_buf, |
| 399 | + struct dpa_ptp_ident *ident, |
| 400 | + struct dpa_ptp_time *ts) |
| 401 | +{ |
| 402 | + struct circ_buf *circ_buf = &ptp_buf->circ_buf; |
| 403 | + int size = ptp_buf->size; |
| 404 | + int head, tail, idx; |
| 405 | + unsigned long flags; |
| 406 | + struct dpa_ptp_data *tmp, *tmp2; |
| 407 | + struct dpa_ptp_ident *tmp_ident; |
| 408 | + |
| 409 | + spin_lock_irqsave(&ptp_buf->ptp_lock, flags); |
| 410 | + |
| 411 | + head = circ_buf->head; |
| 412 | + tail = idx = circ_buf->tail; |
| 413 | + |
| 414 | + if (CIRC_CNT(head, tail, size) == 0) { |
| 415 | + spin_unlock_irqrestore(&ptp_buf->ptp_lock, flags); |
| 416 | + return 1; |
| 417 | + } |
| 418 | + |
| 419 | + while (idx != head) { |
| 420 | + tmp = (struct dpa_ptp_data *)(circ_buf->buf) + idx; |
| 421 | + tmp_ident = &tmp->ident; |
| 422 | + if (dpa_ptp_is_ident_match(tmp_ident, ident)) |
| 423 | + break; |
| 424 | + idx = (idx + 1) & (size - 1); |
| 425 | + } |
| 426 | + |
| 427 | + if (idx == head) { |
| 428 | + spin_unlock_irqrestore(&ptp_buf->ptp_lock, flags); |
| 429 | + return 1; |
| 430 | + } |
| 431 | + |
| 432 | + ts->sec = tmp->ts.sec; |
| 433 | + ts->nsec = tmp->ts.nsec; |
| 434 | + |
| 435 | + if (idx != tail) { |
| 436 | + if (CIRC_CNT(idx, tail, size) > TS_ACCUMULATION_THRESHOLD) { |
| 437 | + tail = circ_buf->tail = |
| 438 | + (idx - TS_ACCUMULATION_THRESHOLD) & (size - 1); |
| 439 | + } |
| 440 | + |
| 441 | + while (CIRC_CNT(idx, tail, size) > 0) { |
| 442 | + tmp = (struct dpa_ptp_data *)(circ_buf->buf) + idx; |
| 443 | + idx = (idx - 1) & (size - 1); |
| 444 | + tmp2 = (struct dpa_ptp_data *)(circ_buf->buf) + idx; |
| 445 | + *tmp = *tmp2; |
| 446 | + } |
| 447 | + } |
| 448 | + circ_buf->tail = (tail + 1) & (size - 1); |
| 449 | + |
| 450 | + spin_unlock_irqrestore(&ptp_buf->ptp_lock, flags); |
| 451 | + |
| 452 | + return 0; |
| 453 | +} |
| 454 | + |
| 455 | +/* Parse the PTP packets |
| 456 | + * |
| 457 | + * The PTP header can be found in an IPv4 packet, IPv6 patcket or in |
| 458 | + * an IEEE802.3 ethernet frame. This function returns the position of |
| 459 | + * the PTP packet or NULL if no PTP found |
| 460 | + */ |
| 461 | +static u8 *dpa_ptp_parse_packet(struct sk_buff *skb, u16 *eth_type) |
| 462 | +{ |
| 463 | + u8 *pos = skb->data + ETH_ALEN + ETH_ALEN; |
| 464 | + u8 *ptp_loc = NULL; |
| 465 | + u8 msg_type; |
| 466 | + u32 access_len = ETH_ALEN + ETH_ALEN + DPA_ETYPE_LEN; |
| 467 | + struct iphdr *iph; |
| 468 | + struct udphdr *udph; |
| 469 | + struct ipv6hdr *ipv6h; |
| 470 | + |
| 471 | + /* when we can receive S/G frames we need to check the data we want to |
| 472 | + * access is in the linear skb buffer |
| 473 | + */ |
| 474 | + if (!pskb_may_pull(skb, access_len)) |
| 475 | + return NULL; |
| 476 | + |
| 477 | + *eth_type = *((u16 *)pos); |
| 478 | + |
| 479 | + /* Check if inner tag is here */ |
| 480 | + if (*eth_type == ETH_P_8021Q) { |
| 481 | + access_len += DPA_VLAN_TAG_LEN; |
| 482 | + |
| 483 | + if (!pskb_may_pull(skb, access_len)) |
| 484 | + return NULL; |
| 485 | + |
| 486 | + pos += DPA_VLAN_TAG_LEN; |
| 487 | + *eth_type = *((u16 *)pos); |
| 488 | + } |
| 489 | + |
| 490 | + pos += DPA_ETYPE_LEN; |
| 491 | + |
| 492 | + switch (*eth_type) { |
| 493 | + /* Transport of PTP over Ethernet */ |
| 494 | + case ETH_P_1588: |
| 495 | + ptp_loc = pos; |
| 496 | + |
| 497 | + if (!pskb_may_pull(skb, access_len + PTP_OFFS_MSG_TYPE + 1)) |
| 498 | + return NULL; |
| 499 | + |
| 500 | + msg_type = *((u8 *)(ptp_loc + PTP_OFFS_MSG_TYPE)) & 0xf; |
| 501 | + if ((msg_type == PTP_MSGTYPE_SYNC) |
| 502 | + || (msg_type == PTP_MSGTYPE_DELREQ) |
| 503 | + || (msg_type == PTP_MSGTYPE_PDELREQ) |
| 504 | + || (msg_type == PTP_MSGTYPE_PDELRESP)) |
| 505 | + return ptp_loc; |
| 506 | + break; |
| 507 | + /* Transport of PTP over IPv4 */ |
| 508 | + case ETH_P_IP: |
| 509 | + iph = (struct iphdr *)pos; |
| 510 | + access_len += sizeof(struct iphdr); |
| 511 | + |
| 512 | + if (!pskb_may_pull(skb, access_len)) |
| 513 | + return NULL; |
| 514 | + |
| 515 | + if (ntohs(iph->protocol) != IPPROTO_UDP) |
| 516 | + return NULL; |
| 517 | + |
| 518 | + access_len += iph->ihl * 4 - sizeof(struct iphdr) + |
| 519 | + sizeof(struct udphdr); |
| 520 | + |
| 521 | + if (!pskb_may_pull(skb, access_len)) |
| 522 | + return NULL; |
| 523 | + |
| 524 | + pos += iph->ihl * 4; |
| 525 | + udph = (struct udphdr *)pos; |
| 526 | + if (ntohs(udph->dest) != 319) |
| 527 | + return NULL; |
| 528 | + ptp_loc = pos + sizeof(struct udphdr); |
| 529 | + break; |
| 530 | + /* Transport of PTP over IPv6 */ |
| 531 | + case ETH_P_IPV6: |
| 532 | + ipv6h = (struct ipv6hdr *)pos; |
| 533 | + |
| 534 | + access_len += sizeof(struct ipv6hdr) + sizeof(struct udphdr); |
| 535 | + |
| 536 | + if (ntohs(ipv6h->nexthdr) != IPPROTO_UDP) |
| 537 | + return NULL; |
| 538 | + |
| 539 | + pos += sizeof(struct ipv6hdr); |
| 540 | + udph = (struct udphdr *)pos; |
| 541 | + if (ntohs(udph->dest) != 319) |
| 542 | + return NULL; |
| 543 | + ptp_loc = pos + sizeof(struct udphdr); |
| 544 | + break; |
| 545 | + default: |
| 546 | + break; |
| 547 | + } |
| 548 | + |
| 549 | + return ptp_loc; |
| 550 | +} |
| 551 | + |
| 552 | +static int dpa_ptp_store_stamp(const struct dpa_priv_s *priv, |
| 553 | + struct sk_buff *skb, void *data, enum port_type rx_tx, |
| 554 | + struct dpa_ptp_data *ptp_data) |
| 555 | +{ |
| 556 | + u64 nsec; |
| 557 | + u32 mod; |
| 558 | + u8 *ptp_loc; |
| 559 | + u16 eth_type; |
| 560 | + |
| 561 | + ptp_loc = dpa_ptp_parse_packet(skb, ð_type); |
| 562 | + if (!ptp_loc) |
| 563 | + return -EINVAL; |
| 564 | + |
| 565 | + switch (eth_type) { |
| 566 | + case ETH_P_IP: |
| 567 | + ptp_data->ident.netw_prot = DPA_PTP_PROT_IPV4; |
| 568 | + break; |
| 569 | + case ETH_P_IPV6: |
| 570 | + ptp_data->ident.netw_prot = DPA_PTP_PROT_IPV6; |
| 571 | + break; |
| 572 | + case ETH_P_1588: |
| 573 | + ptp_data->ident.netw_prot = DPA_PTP_PROT_802_3; |
| 574 | + break; |
| 575 | + default: |
| 576 | + return -EINVAL; |
| 577 | + } |
| 578 | + |
| 579 | + if (!pskb_may_pull(skb, ptp_loc - skb->data + PTP_OFFS_SEQ_ID + 2)) |
| 580 | + return -EINVAL; |
| 581 | + |
| 582 | + ptp_data->ident.version = *(ptp_loc + PTP_OFFS_VER_PTP) & 0xf; |
| 583 | + ptp_data->ident.msg_type = *(ptp_loc + PTP_OFFS_MSG_TYPE) & 0xf; |
| 584 | + ptp_data->ident.seq_id = *((u16 *)(ptp_loc + PTP_OFFS_SEQ_ID)); |
| 585 | + memcpy(ptp_data->ident.snd_port_id, ptp_loc + PTP_OFFS_SRCPRTID, |
| 586 | + DPA_PTP_SOURCE_PORT_LENGTH); |
| 587 | + |
| 588 | + nsec = dpa_get_timestamp_ns(priv, rx_tx, data); |
| 589 | + mod = do_div(nsec, NANOSEC_PER_SECOND); |
| 590 | + ptp_data->ts.sec = nsec; |
| 591 | + ptp_data->ts.nsec = mod; |
| 592 | + |
| 593 | + return 0; |
| 594 | +} |
| 595 | + |
| 596 | +void dpa_ptp_store_txstamp(const struct dpa_priv_s *priv, |
| 597 | + struct sk_buff *skb, void *data) |
| 598 | +{ |
| 599 | + struct dpa_ptp_tsu *tsu = priv->tsu; |
| 600 | + struct dpa_ptp_data ptp_tx_data; |
| 601 | + |
| 602 | + if (dpa_ptp_store_stamp(priv, skb, data, TX, &ptp_tx_data)) |
| 603 | + return; |
| 604 | + |
| 605 | + dpa_ptp_insert(&tsu->tx_timestamps, &ptp_tx_data); |
| 606 | +} |
| 607 | + |
| 608 | +void dpa_ptp_store_rxstamp(const struct dpa_priv_s *priv, |
| 609 | + struct sk_buff *skb, void *data) |
| 610 | +{ |
| 611 | + struct dpa_ptp_tsu *tsu = priv->tsu; |
| 612 | + struct dpa_ptp_data ptp_rx_data; |
| 613 | + |
| 614 | + if (dpa_ptp_store_stamp(priv, skb, data, RX, &ptp_rx_data)) |
| 615 | + return; |
| 616 | + |
| 617 | + dpa_ptp_insert(&tsu->rx_timestamps, &ptp_rx_data); |
| 618 | +} |
| 619 | + |
| 620 | +static uint8_t dpa_get_tx_timestamp(struct dpa_ptp_tsu *ptp_tsu, |
| 621 | + struct dpa_ptp_ident *ident, |
| 622 | + struct dpa_ptp_time *ts) |
| 623 | +{ |
| 624 | + struct dpa_ptp_tsu *tsu = ptp_tsu; |
| 625 | + struct dpa_ptp_time tmp; |
| 626 | + int flag; |
| 627 | + |
| 628 | + flag = dpa_ptp_find_and_remove(&tsu->tx_timestamps, ident, &tmp); |
| 629 | + if (!flag) { |
| 630 | + ts->sec = tmp.sec; |
| 631 | + ts->nsec = tmp.nsec; |
| 632 | + return 0; |
| 633 | + } |
| 634 | + |
| 635 | + return -1; |
| 636 | +} |
| 637 | + |
| 638 | +static uint8_t dpa_get_rx_timestamp(struct dpa_ptp_tsu *ptp_tsu, |
| 639 | + struct dpa_ptp_ident *ident, |
| 640 | + struct dpa_ptp_time *ts) |
| 641 | +{ |
| 642 | + struct dpa_ptp_tsu *tsu = ptp_tsu; |
| 643 | + struct dpa_ptp_time tmp; |
| 644 | + int flag; |
| 645 | + |
| 646 | + flag = dpa_ptp_find_and_remove(&tsu->rx_timestamps, ident, &tmp); |
| 647 | + if (!flag) { |
| 648 | + ts->sec = tmp.sec; |
| 649 | + ts->nsec = tmp.nsec; |
| 650 | + return 0; |
| 651 | + } |
| 652 | + |
| 653 | + return -1; |
| 654 | +} |
| 655 | + |
| 656 | +static void dpa_set_fiper_alarm(struct dpa_ptp_tsu *tsu, |
| 657 | + struct dpa_ptp_time *cnt_time) |
| 658 | +{ |
| 659 | + struct mac_device *mac_dev = tsu->dpa_priv->mac_dev; |
| 660 | + u64 tmp, fiper; |
| 661 | + |
| 662 | + if (mac_dev->fm_rtc_disable) |
| 663 | + mac_dev->fm_rtc_disable(get_fm_handle(tsu->dpa_priv->net_dev)); |
| 664 | + |
| 665 | + /* TMR_FIPER1 will pulse every second after ALARM1 expired */ |
| 666 | + tmp = (u64)cnt_time->sec * NANOSEC_PER_SECOND + (u64)cnt_time->nsec; |
| 667 | + fiper = NANOSEC_PER_SECOND - DPA_PTP_NOMINAL_FREQ_PERIOD_NS; |
| 668 | + if (mac_dev->fm_rtc_set_alarm) |
| 669 | + mac_dev->fm_rtc_set_alarm(get_fm_handle(tsu->dpa_priv->net_dev), |
| 670 | + 0, tmp); |
| 671 | + if (mac_dev->fm_rtc_set_fiper) |
| 672 | + mac_dev->fm_rtc_set_fiper(get_fm_handle(tsu->dpa_priv->net_dev), |
| 673 | + 0, fiper); |
| 674 | + |
| 675 | + if (mac_dev->fm_rtc_enable) |
| 676 | + mac_dev->fm_rtc_enable(get_fm_handle(tsu->dpa_priv->net_dev)); |
| 677 | +} |
| 678 | + |
| 679 | +static void dpa_get_curr_cnt(struct dpa_ptp_tsu *tsu, |
| 680 | + struct dpa_ptp_time *curr_time) |
| 681 | +{ |
| 682 | + struct mac_device *mac_dev = tsu->dpa_priv->mac_dev; |
| 683 | + u64 tmp; |
| 684 | + u32 mod; |
| 685 | + |
| 686 | + if (mac_dev->fm_rtc_get_cnt) |
| 687 | + mac_dev->fm_rtc_get_cnt(get_fm_handle(tsu->dpa_priv->net_dev), |
| 688 | + &tmp); |
| 689 | + |
| 690 | + mod = do_div(tmp, NANOSEC_PER_SECOND); |
| 691 | + curr_time->sec = (u32)tmp; |
| 692 | + curr_time->nsec = mod; |
| 693 | +} |
| 694 | + |
| 695 | +static void dpa_set_1588cnt(struct dpa_ptp_tsu *tsu, |
| 696 | + struct dpa_ptp_time *cnt_time) |
| 697 | +{ |
| 698 | + struct mac_device *mac_dev = tsu->dpa_priv->mac_dev; |
| 699 | + u64 tmp; |
| 700 | + |
| 701 | + tmp = (u64)cnt_time->sec * NANOSEC_PER_SECOND + (u64)cnt_time->nsec; |
| 702 | + |
| 703 | + if (mac_dev->fm_rtc_set_cnt) |
| 704 | + mac_dev->fm_rtc_set_cnt(get_fm_handle(tsu->dpa_priv->net_dev), |
| 705 | + tmp); |
| 706 | + |
| 707 | + /* Restart fiper two seconds later */ |
| 708 | + cnt_time->sec += 2; |
| 709 | + cnt_time->nsec = 0; |
| 710 | + dpa_set_fiper_alarm(tsu, cnt_time); |
| 711 | +} |
| 712 | + |
| 713 | +static void dpa_get_drift(struct dpa_ptp_tsu *tsu, u32 *addend) |
| 714 | +{ |
| 715 | + struct mac_device *mac_dev = tsu->dpa_priv->mac_dev; |
| 716 | + u32 drift; |
| 717 | + |
| 718 | + if (mac_dev->fm_rtc_get_drift) |
| 719 | + mac_dev->fm_rtc_get_drift(get_fm_handle(tsu->dpa_priv->net_dev), |
| 720 | + &drift); |
| 721 | + |
| 722 | + *addend = drift; |
| 723 | +} |
| 724 | + |
| 725 | +static void dpa_set_drift(struct dpa_ptp_tsu *tsu, u32 addend) |
| 726 | +{ |
| 727 | + struct mac_device *mac_dev = tsu->dpa_priv->mac_dev; |
| 728 | + |
| 729 | + if (mac_dev->fm_rtc_set_drift) |
| 730 | + mac_dev->fm_rtc_set_drift(get_fm_handle(tsu->dpa_priv->net_dev), |
| 731 | + addend); |
| 732 | +} |
| 733 | + |
| 734 | +static void dpa_flush_timestamp(struct dpa_ptp_tsu *tsu) |
| 735 | +{ |
| 736 | + dpa_ptp_reset_circ(&tsu->rx_timestamps, DEFAULT_PTP_RX_BUF_SZ); |
| 737 | + dpa_ptp_reset_circ(&tsu->tx_timestamps, DEFAULT_PTP_TX_BUF_SZ); |
| 738 | +} |
| 739 | + |
| 740 | +int dpa_ioctl_1588(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 741 | +{ |
| 742 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 743 | + struct dpa_ptp_tsu *tsu = priv->tsu; |
| 744 | + struct mac_device *mac_dev = priv->mac_dev; |
| 745 | + struct dpa_ptp_data ptp_data; |
| 746 | + struct dpa_ptp_data *ptp_data_user; |
| 747 | + struct dpa_ptp_time act_time; |
| 748 | + u32 addend; |
| 749 | + int retval = 0; |
| 750 | + |
| 751 | + if (!tsu || !tsu->valid) |
| 752 | + return -ENODEV; |
| 753 | + |
| 754 | + switch (cmd) { |
| 755 | + case PTP_ENBL_TXTS_IOCTL: |
| 756 | + tsu->hwts_tx_en_ioctl = 1; |
| 757 | + if (mac_dev->fm_rtc_enable) |
| 758 | + mac_dev->fm_rtc_enable(get_fm_handle(dev)); |
| 759 | + if (mac_dev->ptp_enable) |
| 760 | + mac_dev->ptp_enable(mac_dev->get_mac_handle(mac_dev)); |
| 761 | + break; |
| 762 | + case PTP_DSBL_TXTS_IOCTL: |
| 763 | + tsu->hwts_tx_en_ioctl = 0; |
| 764 | + if (mac_dev->fm_rtc_disable) |
| 765 | + mac_dev->fm_rtc_disable(get_fm_handle(dev)); |
| 766 | + if (mac_dev->ptp_disable) |
| 767 | + mac_dev->ptp_disable(mac_dev->get_mac_handle(mac_dev)); |
| 768 | + break; |
| 769 | + case PTP_ENBL_RXTS_IOCTL: |
| 770 | + tsu->hwts_rx_en_ioctl = 1; |
| 771 | + break; |
| 772 | + case PTP_DSBL_RXTS_IOCTL: |
| 773 | + tsu->hwts_rx_en_ioctl = 0; |
| 774 | + break; |
| 775 | + case PTP_GET_RX_TIMESTAMP: |
| 776 | + ptp_data_user = (struct dpa_ptp_data *)ifr->ifr_data; |
| 777 | + if (copy_from_user(&ptp_data.ident, |
| 778 | + &ptp_data_user->ident, sizeof(ptp_data.ident))) |
| 779 | + return -EINVAL; |
| 780 | + |
| 781 | + if (dpa_get_rx_timestamp(tsu, &ptp_data.ident, &ptp_data.ts)) |
| 782 | + return -EAGAIN; |
| 783 | + |
| 784 | + if (copy_to_user((void __user *)&ptp_data_user->ts, |
| 785 | + &ptp_data.ts, sizeof(ptp_data.ts))) |
| 786 | + return -EFAULT; |
| 787 | + break; |
| 788 | + case PTP_GET_TX_TIMESTAMP: |
| 789 | + ptp_data_user = (struct dpa_ptp_data *)ifr->ifr_data; |
| 790 | + if (copy_from_user(&ptp_data.ident, |
| 791 | + &ptp_data_user->ident, sizeof(ptp_data.ident))) |
| 792 | + return -EINVAL; |
| 793 | + |
| 794 | + if (dpa_get_tx_timestamp(tsu, &ptp_data.ident, &ptp_data.ts)) |
| 795 | + return -EAGAIN; |
| 796 | + |
| 797 | + if (copy_to_user((void __user *)&ptp_data_user->ts, |
| 798 | + &ptp_data.ts, sizeof(ptp_data.ts))) |
| 799 | + return -EFAULT; |
| 800 | + break; |
| 801 | + case PTP_GET_TIME: |
| 802 | + dpa_get_curr_cnt(tsu, &act_time); |
| 803 | + if (copy_to_user(ifr->ifr_data, &act_time, sizeof(act_time))) |
| 804 | + return -EFAULT; |
| 805 | + break; |
| 806 | + case PTP_SET_TIME: |
| 807 | + if (copy_from_user(&act_time, ifr->ifr_data, sizeof(act_time))) |
| 808 | + return -EINVAL; |
| 809 | + dpa_set_1588cnt(tsu, &act_time); |
| 810 | + break; |
| 811 | + case PTP_GET_ADJ: |
| 812 | + dpa_get_drift(tsu, &addend); |
| 813 | + if (copy_to_user(ifr->ifr_data, &addend, sizeof(addend))) |
| 814 | + return -EFAULT; |
| 815 | + break; |
| 816 | + case PTP_SET_ADJ: |
| 817 | + if (copy_from_user(&addend, ifr->ifr_data, sizeof(addend))) |
| 818 | + return -EINVAL; |
| 819 | + dpa_set_drift(tsu, addend); |
| 820 | + break; |
| 821 | + case PTP_SET_FIPER_ALARM: |
| 822 | + if (copy_from_user(&act_time, ifr->ifr_data, sizeof(act_time))) |
| 823 | + return -EINVAL; |
| 824 | + dpa_set_fiper_alarm(tsu, &act_time); |
| 825 | + break; |
| 826 | + case PTP_CLEANUP_TS: |
| 827 | + dpa_flush_timestamp(tsu); |
| 828 | + break; |
| 829 | + default: |
| 830 | + return -EINVAL; |
| 831 | + } |
| 832 | + |
| 833 | + return retval; |
| 834 | +} |
| 835 | + |
| 836 | +int dpa_ptp_init(struct dpa_priv_s *priv) |
| 837 | +{ |
| 838 | + struct dpa_ptp_tsu *tsu; |
| 839 | + |
| 840 | + /* Allocate memory for PTP structure */ |
| 841 | + tsu = kzalloc(sizeof(struct dpa_ptp_tsu), GFP_KERNEL); |
| 842 | + if (!tsu) |
| 843 | + return -ENOMEM; |
| 844 | + |
| 845 | + tsu->valid = TRUE; |
| 846 | + tsu->dpa_priv = priv; |
| 847 | + |
| 848 | + dpa_ptp_init_circ(&tsu->rx_timestamps, DEFAULT_PTP_RX_BUF_SZ); |
| 849 | + dpa_ptp_init_circ(&tsu->tx_timestamps, DEFAULT_PTP_TX_BUF_SZ); |
| 850 | + |
| 851 | + priv->tsu = tsu; |
| 852 | + |
| 853 | + return 0; |
| 854 | +} |
| 855 | +EXPORT_SYMBOL(dpa_ptp_init); |
| 856 | + |
| 857 | +void dpa_ptp_cleanup(struct dpa_priv_s *priv) |
| 858 | +{ |
| 859 | + struct dpa_ptp_tsu *tsu = priv->tsu; |
| 860 | + |
| 861 | + tsu->valid = FALSE; |
| 862 | + vfree(tsu->rx_timestamps.circ_buf.buf); |
| 863 | + vfree(tsu->tx_timestamps.circ_buf.buf); |
| 864 | + |
| 865 | + kfree(tsu); |
| 866 | +} |
| 867 | +EXPORT_SYMBOL(dpa_ptp_cleanup); |
| 868 | --- /dev/null |
| 869 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_1588.h |
| 870 | @@ -0,0 +1,138 @@ |
| 871 | +/* Copyright (C) 2011 Freescale Semiconductor, Inc. |
| 872 | + * |
| 873 | + * This program is free software; you can redistribute it and/or modify |
| 874 | + * it under the terms of the GNU General Public License as published by |
| 875 | + * the Free Software Foundation; either version 2 of the License, or |
| 876 | + * (at your option) any later version. |
| 877 | + * |
| 878 | + * This program is distributed in the hope that it will be useful, |
| 879 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 880 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 881 | + * GNU General Public License for more details. |
| 882 | + * |
| 883 | + * You should have received a copy of the GNU General Public License along |
| 884 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 885 | + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 886 | + * |
| 887 | + */ |
| 888 | +#ifndef __DPAA_1588_H__ |
| 889 | +#define __DPAA_1588_H__ |
| 890 | + |
| 891 | +#include <linux/netdevice.h> |
| 892 | +#include <linux/etherdevice.h> |
| 893 | +#include <linux/circ_buf.h> |
| 894 | +#include <linux/fsl_qman.h> |
| 895 | + |
| 896 | +#define DEFAULT_PTP_RX_BUF_SZ 256 |
| 897 | +#define DEFAULT_PTP_TX_BUF_SZ 256 |
| 898 | + |
| 899 | +/* 1588 private ioctl calls */ |
| 900 | +#define PTP_ENBL_TXTS_IOCTL SIOCDEVPRIVATE |
| 901 | +#define PTP_DSBL_TXTS_IOCTL (SIOCDEVPRIVATE + 1) |
| 902 | +#define PTP_ENBL_RXTS_IOCTL (SIOCDEVPRIVATE + 2) |
| 903 | +#define PTP_DSBL_RXTS_IOCTL (SIOCDEVPRIVATE + 3) |
| 904 | +#define PTP_GET_TX_TIMESTAMP (SIOCDEVPRIVATE + 4) |
| 905 | +#define PTP_GET_RX_TIMESTAMP (SIOCDEVPRIVATE + 5) |
| 906 | +#define PTP_SET_TIME (SIOCDEVPRIVATE + 6) |
| 907 | +#define PTP_GET_TIME (SIOCDEVPRIVATE + 7) |
| 908 | +#define PTP_SET_FIPER_ALARM (SIOCDEVPRIVATE + 8) |
| 909 | +#define PTP_SET_ADJ (SIOCDEVPRIVATE + 9) |
| 910 | +#define PTP_GET_ADJ (SIOCDEVPRIVATE + 10) |
| 911 | +#define PTP_CLEANUP_TS (SIOCDEVPRIVATE + 11) |
| 912 | + |
| 913 | +/* PTP V2 message type */ |
| 914 | +enum { |
| 915 | + PTP_MSGTYPE_SYNC = 0x0, |
| 916 | + PTP_MSGTYPE_DELREQ = 0x1, |
| 917 | + PTP_MSGTYPE_PDELREQ = 0x2, |
| 918 | + PTP_MSGTYPE_PDELRESP = 0x3, |
| 919 | + PTP_MSGTYPE_FLWUP = 0x8, |
| 920 | + PTP_MSGTYPE_DELRESP = 0x9, |
| 921 | + PTP_MSGTYPE_PDELRES_FLWUP = 0xA, |
| 922 | + PTP_MSGTYPE_ANNOUNCE = 0xB, |
| 923 | + PTP_MSGTYPE_SGNLNG = 0xC, |
| 924 | + PTP_MSGTYPE_MNGMNT = 0xD, |
| 925 | +}; |
| 926 | + |
| 927 | +/* Byte offset of data in the PTP V2 headers */ |
| 928 | +#define PTP_OFFS_MSG_TYPE 0 |
| 929 | +#define PTP_OFFS_VER_PTP 1 |
| 930 | +#define PTP_OFFS_MSG_LEN 2 |
| 931 | +#define PTP_OFFS_DOM_NMB 4 |
| 932 | +#define PTP_OFFS_FLAGS 6 |
| 933 | +#define PTP_OFFS_CORFIELD 8 |
| 934 | +#define PTP_OFFS_SRCPRTID 20 |
| 935 | +#define PTP_OFFS_SEQ_ID 30 |
| 936 | +#define PTP_OFFS_CTRL 32 |
| 937 | +#define PTP_OFFS_LOGMEAN 33 |
| 938 | + |
| 939 | +#define PTP_IP_OFFS 14 |
| 940 | +#define PTP_UDP_OFFS 34 |
| 941 | +#define PTP_HEADER_OFFS 42 |
| 942 | +#define PTP_MSG_TYPE_OFFS (PTP_HEADER_OFFS + PTP_OFFS_MSG_TYPE) |
| 943 | +#define PTP_SPORT_ID_OFFS (PTP_HEADER_OFFS + PTP_OFFS_SRCPRTID) |
| 944 | +#define PTP_SEQ_ID_OFFS (PTP_HEADER_OFFS + PTP_OFFS_SEQ_ID) |
| 945 | +#define PTP_CTRL_OFFS (PTP_HEADER_OFFS + PTP_OFFS_CTRL) |
| 946 | + |
| 947 | +/* 1588-2008 network protocol enumeration values */ |
| 948 | +#define DPA_PTP_PROT_IPV4 1 |
| 949 | +#define DPA_PTP_PROT_IPV6 2 |
| 950 | +#define DPA_PTP_PROT_802_3 3 |
| 951 | +#define DPA_PTP_PROT_DONTCARE 0xFFFF |
| 952 | + |
| 953 | +#define DPA_PTP_SOURCE_PORT_LENGTH 10 |
| 954 | +#define DPA_PTP_HEADER_SZE 34 |
| 955 | +#define DPA_ETYPE_LEN 2 |
| 956 | +#define DPA_VLAN_TAG_LEN 4 |
| 957 | +#define NANOSEC_PER_SECOND 1000000000 |
| 958 | + |
| 959 | +/* The threshold between the current found one and the oldest one */ |
| 960 | +#define TS_ACCUMULATION_THRESHOLD 50 |
| 961 | + |
| 962 | +/* Struct needed to identify a timestamp */ |
| 963 | +struct dpa_ptp_ident { |
| 964 | + u8 version; |
| 965 | + u8 msg_type; |
| 966 | + u16 netw_prot; |
| 967 | + u16 seq_id; |
| 968 | + u8 snd_port_id[DPA_PTP_SOURCE_PORT_LENGTH]; |
| 969 | +}; |
| 970 | + |
| 971 | +/* Timestamp format in 1588-2008 */ |
| 972 | +struct dpa_ptp_time { |
| 973 | + u64 sec; /* just 48 bit used */ |
| 974 | + u32 nsec; |
| 975 | +}; |
| 976 | + |
| 977 | +/* needed for timestamp data over ioctl */ |
| 978 | +struct dpa_ptp_data { |
| 979 | + struct dpa_ptp_ident ident; |
| 980 | + struct dpa_ptp_time ts; |
| 981 | +}; |
| 982 | + |
| 983 | +struct dpa_ptp_circ_buf { |
| 984 | + struct circ_buf circ_buf; |
| 985 | + u32 size; |
| 986 | + spinlock_t ptp_lock; |
| 987 | +}; |
| 988 | + |
| 989 | +/* PTP TSU control structure */ |
| 990 | +struct dpa_ptp_tsu { |
| 991 | + struct dpa_priv_s *dpa_priv; |
| 992 | + bool valid; |
| 993 | + struct dpa_ptp_circ_buf rx_timestamps; |
| 994 | + struct dpa_ptp_circ_buf tx_timestamps; |
| 995 | + |
| 996 | + /* HW timestamping over ioctl enabled flag */ |
| 997 | + int hwts_tx_en_ioctl; |
| 998 | + int hwts_rx_en_ioctl; |
| 999 | +}; |
| 1000 | + |
| 1001 | +extern int dpa_ptp_init(struct dpa_priv_s *priv); |
| 1002 | +extern void dpa_ptp_cleanup(struct dpa_priv_s *priv); |
| 1003 | +extern void dpa_ptp_store_txstamp(const struct dpa_priv_s *priv, |
| 1004 | + struct sk_buff *skb, void *data); |
| 1005 | +extern void dpa_ptp_store_rxstamp(const struct dpa_priv_s *priv, |
| 1006 | + struct sk_buff *skb, void *data); |
| 1007 | +extern int dpa_ioctl_1588(struct net_device *dev, struct ifreq *ifr, int cmd); |
| 1008 | +#endif |
| 1009 | --- /dev/null |
| 1010 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.c |
| 1011 | @@ -0,0 +1,180 @@ |
| 1012 | +/* Copyright 2008-2013 Freescale Semiconductor Inc. |
| 1013 | + * |
| 1014 | + * Redistribution and use in source and binary forms, with or without |
| 1015 | + * modification, are permitted provided that the following conditions are met: |
| 1016 | + * * Redistributions of source code must retain the above copyright |
| 1017 | + * notice, this list of conditions and the following disclaimer. |
| 1018 | + * * Redistributions in binary form must reproduce the above copyright |
| 1019 | + * notice, this list of conditions and the following disclaimer in the |
| 1020 | + * documentation and/or other materials provided with the distribution. |
| 1021 | + * * Neither the name of Freescale Semiconductor nor the |
| 1022 | + * names of its contributors may be used to endorse or promote products |
| 1023 | + * derived from this software without specific prior written permission. |
| 1024 | + * |
| 1025 | + * |
| 1026 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 1027 | + * GNU General Public License ("GPL") as published by the Free Software |
| 1028 | + * Foundation, either version 2 of that License or (at your option) any |
| 1029 | + * later version. |
| 1030 | + * |
| 1031 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 1032 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 1033 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 1034 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 1035 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 1036 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 1037 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 1038 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 1039 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 1040 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 1041 | + */ |
| 1042 | + |
| 1043 | +#include <linux/module.h> |
| 1044 | +#include <linux/fsl_qman.h> /* struct qm_mcr_querycgr */ |
| 1045 | +#include <linux/debugfs.h> |
| 1046 | +#include "dpaa_debugfs.h" |
| 1047 | +#include "dpaa_eth.h" /* struct dpa_priv_s, dpa_percpu_priv_s, dpa_bp */ |
| 1048 | + |
| 1049 | +#define DPA_DEBUGFS_DESCRIPTION "FSL DPAA Ethernet debugfs entries" |
| 1050 | +#define DPA_ETH_DEBUGFS_ROOT "fsl_dpa" |
| 1051 | + |
| 1052 | +static struct dentry *dpa_debugfs_root; |
| 1053 | + |
| 1054 | +static int __cold dpa_debugfs_loop_open(struct inode *inode, struct file *file); |
| 1055 | +static ssize_t dpa_loop_write(struct file *f, |
| 1056 | + const char __user *buf, size_t count, loff_t *off); |
| 1057 | + |
| 1058 | +static const struct file_operations dpa_debugfs_lp_fops = { |
| 1059 | + .open = dpa_debugfs_loop_open, |
| 1060 | + .write = dpa_loop_write, |
| 1061 | + .read = seq_read, |
| 1062 | + .llseek = seq_lseek, |
| 1063 | + .release = single_release, |
| 1064 | +}; |
| 1065 | + |
| 1066 | +static int dpa_debugfs_loop_show(struct seq_file *file, void *offset) |
| 1067 | +{ |
| 1068 | + struct dpa_priv_s *priv; |
| 1069 | + |
| 1070 | + BUG_ON(offset == NULL); |
| 1071 | + |
| 1072 | + priv = netdev_priv((struct net_device *)file->private); |
| 1073 | + seq_printf(file, "%d->%d\n", priv->loop_id, priv->loop_to); |
| 1074 | + |
| 1075 | + return 0; |
| 1076 | +} |
| 1077 | + |
| 1078 | +static int user_input_convert(const char __user *user_buf, size_t count, |
| 1079 | + long *val) |
| 1080 | +{ |
| 1081 | + char buf[12]; |
| 1082 | + |
| 1083 | + if (count > sizeof(buf) - 1) |
| 1084 | + return -EINVAL; |
| 1085 | + if (copy_from_user(buf, user_buf, count)) |
| 1086 | + return -EFAULT; |
| 1087 | + buf[count] = '\0'; |
| 1088 | + if (kstrtol(buf, 0, val)) |
| 1089 | + return -EINVAL; |
| 1090 | + return 0; |
| 1091 | +} |
| 1092 | + |
| 1093 | +static ssize_t dpa_loop_write(struct file *f, |
| 1094 | + const char __user *buf, size_t count, loff_t *off) |
| 1095 | +{ |
| 1096 | + struct dpa_priv_s *priv; |
| 1097 | + struct net_device *netdev; |
| 1098 | + struct seq_file *sf; |
| 1099 | + int ret; |
| 1100 | + long val; |
| 1101 | + |
| 1102 | + ret = user_input_convert(buf, count, &val); |
| 1103 | + if (ret) |
| 1104 | + return ret; |
| 1105 | + |
| 1106 | + sf = (struct seq_file *)f->private_data; |
| 1107 | + netdev = (struct net_device *)sf->private; |
| 1108 | + priv = netdev_priv(netdev); |
| 1109 | + |
| 1110 | + priv->loop_to = ((val < 0) || (val > 20)) ? -1 : val; |
| 1111 | + |
| 1112 | + return count; |
| 1113 | +} |
| 1114 | + |
| 1115 | +static int __cold dpa_debugfs_loop_open(struct inode *inode, struct file *file) |
| 1116 | +{ |
| 1117 | + int _errno; |
| 1118 | + const struct net_device *net_dev; |
| 1119 | + |
| 1120 | + _errno = single_open(file, dpa_debugfs_loop_show, inode->i_private); |
| 1121 | + if (unlikely(_errno < 0)) { |
| 1122 | + net_dev = (struct net_device *)inode->i_private; |
| 1123 | + |
| 1124 | + if (netif_msg_drv((struct dpa_priv_s *)netdev_priv(net_dev))) |
| 1125 | + netdev_err(net_dev, "single_open() = %d\n", |
| 1126 | + _errno); |
| 1127 | + } |
| 1128 | + |
| 1129 | + return _errno; |
| 1130 | +} |
| 1131 | + |
| 1132 | + |
| 1133 | +int dpa_netdev_debugfs_create(struct net_device *net_dev) |
| 1134 | +{ |
| 1135 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1136 | + static int cnt; |
| 1137 | + char loop_file_name[100]; |
| 1138 | + |
| 1139 | + if (unlikely(dpa_debugfs_root == NULL)) { |
| 1140 | + pr_err(KBUILD_MODNAME ": %s:%hu:%s(): \t%s\n", |
| 1141 | + KBUILD_BASENAME".c", __LINE__, __func__, |
| 1142 | + "root debugfs missing, possible module ordering issue"); |
| 1143 | + return -ENOMEM; |
| 1144 | + } |
| 1145 | + |
| 1146 | + sprintf(loop_file_name, "eth%d_loop", ++cnt); |
| 1147 | + priv->debugfs_loop_file = debugfs_create_file(loop_file_name, |
| 1148 | + S_IRUGO, |
| 1149 | + dpa_debugfs_root, |
| 1150 | + net_dev, |
| 1151 | + &dpa_debugfs_lp_fops); |
| 1152 | + if (unlikely(priv->debugfs_loop_file == NULL)) { |
| 1153 | + netdev_err(net_dev, "debugfs_create_file(%s/%s)", |
| 1154 | + dpa_debugfs_root->d_iname, |
| 1155 | + loop_file_name); |
| 1156 | + |
| 1157 | + return -ENOMEM; |
| 1158 | + } |
| 1159 | + return 0; |
| 1160 | +} |
| 1161 | + |
| 1162 | +void dpa_netdev_debugfs_remove(struct net_device *net_dev) |
| 1163 | +{ |
| 1164 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1165 | + |
| 1166 | + debugfs_remove(priv->debugfs_loop_file); |
| 1167 | +} |
| 1168 | + |
| 1169 | +int __init dpa_debugfs_module_init(void) |
| 1170 | +{ |
| 1171 | + int _errno = 0; |
| 1172 | + |
| 1173 | + pr_info(KBUILD_MODNAME ": " DPA_DEBUGFS_DESCRIPTION "\n"); |
| 1174 | + |
| 1175 | + dpa_debugfs_root = debugfs_create_dir(DPA_ETH_DEBUGFS_ROOT, NULL); |
| 1176 | + |
| 1177 | + if (unlikely(dpa_debugfs_root == NULL)) { |
| 1178 | + _errno = -ENOMEM; |
| 1179 | + pr_err(KBUILD_MODNAME ": %s:%hu:%s():\n", |
| 1180 | + KBUILD_BASENAME".c", __LINE__, __func__); |
| 1181 | + pr_err("\tdebugfs_create_dir(%s/"KBUILD_MODNAME") = %d\n", |
| 1182 | + DPA_ETH_DEBUGFS_ROOT, _errno); |
| 1183 | + } |
| 1184 | + |
| 1185 | + return _errno; |
| 1186 | +} |
| 1187 | + |
| 1188 | +void __exit dpa_debugfs_module_exit(void) |
| 1189 | +{ |
| 1190 | + debugfs_remove(dpa_debugfs_root); |
| 1191 | +} |
| 1192 | --- /dev/null |
| 1193 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_debugfs.h |
| 1194 | @@ -0,0 +1,43 @@ |
| 1195 | +/* Copyright 2008-2013 Freescale Semiconductor Inc. |
| 1196 | + * |
| 1197 | + * Redistribution and use in source and binary forms, with or without |
| 1198 | + * modification, are permitted provided that the following conditions are met: |
| 1199 | + * * Redistributions of source code must retain the above copyright |
| 1200 | + * notice, this list of conditions and the following disclaimer. |
| 1201 | + * * Redistributions in binary form must reproduce the above copyright |
| 1202 | + * notice, this list of conditions and the following disclaimer in the |
| 1203 | + * documentation and/or other materials provided with the distribution. |
| 1204 | + * * Neither the name of Freescale Semiconductor nor the |
| 1205 | + * names of its contributors may be used to endorse or promote products |
| 1206 | + * derived from this software without specific prior written permission. |
| 1207 | + * |
| 1208 | + * |
| 1209 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 1210 | + * GNU General Public License ("GPL") as published by the Free Software |
| 1211 | + * Foundation, either version 2 of that License or (at your option) any |
| 1212 | + * later version. |
| 1213 | + * |
| 1214 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 1215 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 1216 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 1217 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 1218 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 1219 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 1220 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 1221 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 1222 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 1223 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 1224 | + */ |
| 1225 | + |
| 1226 | +#ifndef DPAA_DEBUGFS_H_ |
| 1227 | +#define DPAA_DEBUGFS_H_ |
| 1228 | + |
| 1229 | +#include <linux/netdevice.h> |
| 1230 | +#include <linux/dcache.h> /* struct dentry needed in dpaa_eth.h */ |
| 1231 | + |
| 1232 | +int dpa_netdev_debugfs_create(struct net_device *net_dev); |
| 1233 | +void dpa_netdev_debugfs_remove(struct net_device *net_dev); |
| 1234 | +int __init dpa_debugfs_module_init(void); |
| 1235 | +void __exit dpa_debugfs_module_exit(void); |
| 1236 | + |
| 1237 | +#endif /* DPAA_DEBUGFS_H_ */ |
| 1238 | --- /dev/null |
| 1239 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.c |
| 1240 | @@ -0,0 +1,1210 @@ |
| 1241 | +/* Copyright 2008-2013 Freescale Semiconductor Inc. |
| 1242 | + * |
| 1243 | + * Redistribution and use in source and binary forms, with or without |
| 1244 | + * modification, are permitted provided that the following conditions are met: |
| 1245 | + * * Redistributions of source code must retain the above copyright |
| 1246 | + * notice, this list of conditions and the following disclaimer. |
| 1247 | + * * Redistributions in binary form must reproduce the above copyright |
| 1248 | + * notice, this list of conditions and the following disclaimer in the |
| 1249 | + * documentation and/or other materials provided with the distribution. |
| 1250 | + * * Neither the name of Freescale Semiconductor nor the |
| 1251 | + * names of its contributors may be used to endorse or promote products |
| 1252 | + * derived from this software without specific prior written permission. |
| 1253 | + * |
| 1254 | + * |
| 1255 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 1256 | + * GNU General Public License ("GPL") as published by the Free Software |
| 1257 | + * Foundation, either version 2 of that License or (at your option) any |
| 1258 | + * later version. |
| 1259 | + * |
| 1260 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 1261 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 1262 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 1263 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 1264 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 1265 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 1266 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 1267 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 1268 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 1269 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 1270 | + */ |
| 1271 | + |
| 1272 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 1273 | +#define pr_fmt(fmt) \ |
| 1274 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 1275 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 1276 | +#else |
| 1277 | +#define pr_fmt(fmt) \ |
| 1278 | + KBUILD_MODNAME ": " fmt |
| 1279 | +#endif |
| 1280 | + |
| 1281 | +#include <linux/init.h> |
| 1282 | +#include <linux/module.h> |
| 1283 | +#include <linux/of_mdio.h> |
| 1284 | +#include <linux/of_net.h> |
| 1285 | +#include <linux/kthread.h> |
| 1286 | +#include <linux/io.h> |
| 1287 | +#include <linux/if_arp.h> /* arp_hdr_len() */ |
| 1288 | +#include <linux/if_vlan.h> /* VLAN_HLEN */ |
| 1289 | +#include <linux/icmp.h> /* struct icmphdr */ |
| 1290 | +#include <linux/ip.h> /* struct iphdr */ |
| 1291 | +#include <linux/ipv6.h> /* struct ipv6hdr */ |
| 1292 | +#include <linux/udp.h> /* struct udphdr */ |
| 1293 | +#include <linux/tcp.h> /* struct tcphdr */ |
| 1294 | +#include <linux/net.h> /* net_ratelimit() */ |
| 1295 | +#include <linux/if_ether.h> /* ETH_P_IP and ETH_P_IPV6 */ |
| 1296 | +#include <linux/highmem.h> |
| 1297 | +#include <linux/percpu.h> |
| 1298 | +#include <linux/dma-mapping.h> |
| 1299 | +#include <linux/fsl_bman.h> |
| 1300 | +#ifdef CONFIG_SOC_BUS |
| 1301 | +#include <linux/sys_soc.h> /* soc_device_match */ |
| 1302 | +#endif |
| 1303 | + |
| 1304 | +#include "fsl_fman.h" |
| 1305 | +#include "fm_ext.h" |
| 1306 | +#include "fm_port_ext.h" |
| 1307 | + |
| 1308 | +#include "mac.h" |
| 1309 | +#include "dpaa_eth.h" |
| 1310 | +#include "dpaa_eth_common.h" |
| 1311 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 1312 | +#include "dpaa_debugfs.h" |
| 1313 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 1314 | + |
| 1315 | +/* CREATE_TRACE_POINTS only needs to be defined once. Other dpa files |
| 1316 | + * using trace events only need to #include <trace/events/sched.h> |
| 1317 | + */ |
| 1318 | +#define CREATE_TRACE_POINTS |
| 1319 | +#include "dpaa_eth_trace.h" |
| 1320 | + |
| 1321 | +#define DPA_NAPI_WEIGHT 64 |
| 1322 | + |
| 1323 | +/* Valid checksum indication */ |
| 1324 | +#define DPA_CSUM_VALID 0xFFFF |
| 1325 | + |
| 1326 | +#define DPA_DESCRIPTION "FSL DPAA Ethernet driver" |
| 1327 | + |
| 1328 | +MODULE_LICENSE("Dual BSD/GPL"); |
| 1329 | + |
| 1330 | +MODULE_AUTHOR("Andy Fleming <afleming@freescale.com>"); |
| 1331 | + |
| 1332 | +MODULE_DESCRIPTION(DPA_DESCRIPTION); |
| 1333 | + |
| 1334 | +static uint8_t debug = -1; |
| 1335 | +module_param(debug, byte, S_IRUGO); |
| 1336 | +MODULE_PARM_DESC(debug, "Module/Driver verbosity level"); |
| 1337 | + |
| 1338 | +/* This has to work in tandem with the DPA_CS_THRESHOLD_xxx values. */ |
| 1339 | +static uint16_t tx_timeout = 1000; |
| 1340 | +module_param(tx_timeout, ushort, S_IRUGO); |
| 1341 | +MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms"); |
| 1342 | + |
| 1343 | +static const char rtx[][3] = { |
| 1344 | + [RX] = "RX", |
| 1345 | + [TX] = "TX" |
| 1346 | +}; |
| 1347 | + |
| 1348 | +#ifndef CONFIG_PPC |
| 1349 | +bool dpaa_errata_a010022; |
| 1350 | +EXPORT_SYMBOL(dpaa_errata_a010022); |
| 1351 | +#endif |
| 1352 | + |
| 1353 | +/* BM */ |
| 1354 | + |
| 1355 | +#define DPAA_ETH_MAX_PAD (L1_CACHE_BYTES * 8) |
| 1356 | + |
| 1357 | +static uint8_t dpa_priv_common_bpid; |
| 1358 | + |
| 1359 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 1360 | +struct net_device *dpa_loop_netdevs[20]; |
| 1361 | +#endif |
| 1362 | + |
| 1363 | +#ifdef CONFIG_PM |
| 1364 | + |
| 1365 | +static int dpaa_suspend(struct device *dev) |
| 1366 | +{ |
| 1367 | + struct net_device *net_dev; |
| 1368 | + struct dpa_priv_s *priv; |
| 1369 | + struct mac_device *mac_dev; |
| 1370 | + int err = 0; |
| 1371 | + |
| 1372 | + net_dev = dev_get_drvdata(dev); |
| 1373 | + |
| 1374 | + if (net_dev->flags & IFF_UP) { |
| 1375 | + priv = netdev_priv(net_dev); |
| 1376 | + mac_dev = priv->mac_dev; |
| 1377 | + |
| 1378 | + if (priv->wol & DPAA_WOL_MAGIC) { |
| 1379 | + err = priv->mac_dev->set_wol(mac_dev->port_dev[RX], |
| 1380 | + priv->mac_dev->get_mac_handle(mac_dev), true); |
| 1381 | + if (err) { |
| 1382 | + netdev_err(net_dev, "set_wol() = %d\n", err); |
| 1383 | + goto set_wol_failed; |
| 1384 | + } |
| 1385 | + } |
| 1386 | + |
| 1387 | + err = fm_port_suspend(mac_dev->port_dev[RX]); |
| 1388 | + if (err) { |
| 1389 | + netdev_err(net_dev, "fm_port_suspend(RX) = %d\n", err); |
| 1390 | + goto rx_port_suspend_failed; |
| 1391 | + } |
| 1392 | + |
| 1393 | + err = fm_port_suspend(mac_dev->port_dev[TX]); |
| 1394 | + if (err) { |
| 1395 | + netdev_err(net_dev, "fm_port_suspend(TX) = %d\n", err); |
| 1396 | + goto tx_port_suspend_failed; |
| 1397 | + } |
| 1398 | + } |
| 1399 | + |
| 1400 | + return 0; |
| 1401 | + |
| 1402 | +tx_port_suspend_failed: |
| 1403 | + fm_port_resume(mac_dev->port_dev[RX]); |
| 1404 | +rx_port_suspend_failed: |
| 1405 | + if (priv->wol & DPAA_WOL_MAGIC) { |
| 1406 | + priv->mac_dev->set_wol(mac_dev->port_dev[RX], |
| 1407 | + priv->mac_dev->get_mac_handle(mac_dev), false); |
| 1408 | + } |
| 1409 | +set_wol_failed: |
| 1410 | + return err; |
| 1411 | +} |
| 1412 | + |
| 1413 | +static int dpaa_resume(struct device *dev) |
| 1414 | +{ |
| 1415 | + struct net_device *net_dev; |
| 1416 | + struct dpa_priv_s *priv; |
| 1417 | + struct mac_device *mac_dev; |
| 1418 | + int err = 0; |
| 1419 | + |
| 1420 | + net_dev = dev_get_drvdata(dev); |
| 1421 | + |
| 1422 | + if (net_dev->flags & IFF_UP) { |
| 1423 | + priv = netdev_priv(net_dev); |
| 1424 | + mac_dev = priv->mac_dev; |
| 1425 | + |
| 1426 | + err = fm_mac_resume(mac_dev->get_mac_handle(mac_dev)); |
| 1427 | + if (err) { |
| 1428 | + netdev_err(net_dev, "fm_mac_resume = %d\n", err); |
| 1429 | + goto resume_failed; |
| 1430 | + } |
| 1431 | + |
| 1432 | + err = fm_port_resume(mac_dev->port_dev[TX]); |
| 1433 | + if (err) { |
| 1434 | + netdev_err(net_dev, "fm_port_resume(TX) = %d\n", err); |
| 1435 | + goto resume_failed; |
| 1436 | + } |
| 1437 | + |
| 1438 | + err = fm_port_resume(mac_dev->port_dev[RX]); |
| 1439 | + if (err) { |
| 1440 | + netdev_err(net_dev, "fm_port_resume(RX) = %d\n", err); |
| 1441 | + goto resume_failed; |
| 1442 | + } |
| 1443 | + |
| 1444 | + if (priv->wol & DPAA_WOL_MAGIC) { |
| 1445 | + err = priv->mac_dev->set_wol(mac_dev->port_dev[RX], |
| 1446 | + priv->mac_dev->get_mac_handle(mac_dev), false); |
| 1447 | + if (err) { |
| 1448 | + netdev_err(net_dev, "set_wol() = %d\n", err); |
| 1449 | + goto resume_failed; |
| 1450 | + } |
| 1451 | + } |
| 1452 | + } |
| 1453 | + |
| 1454 | + return 0; |
| 1455 | + |
| 1456 | +resume_failed: |
| 1457 | + return err; |
| 1458 | +} |
| 1459 | + |
| 1460 | +static const struct dev_pm_ops dpaa_pm_ops = { |
| 1461 | + .suspend = dpaa_suspend, |
| 1462 | + .resume = dpaa_resume, |
| 1463 | +}; |
| 1464 | + |
| 1465 | +#define DPAA_PM_OPS (&dpaa_pm_ops) |
| 1466 | + |
| 1467 | +#else /* CONFIG_PM */ |
| 1468 | + |
| 1469 | +#define DPAA_PM_OPS NULL |
| 1470 | + |
| 1471 | +#endif /* CONFIG_PM */ |
| 1472 | + |
| 1473 | +/* Checks whether the checksum field in Parse Results array is valid |
| 1474 | + * (equals 0xFFFF) and increments the .cse counter otherwise |
| 1475 | + */ |
| 1476 | +static inline void |
| 1477 | +dpa_csum_validation(const struct dpa_priv_s *priv, |
| 1478 | + struct dpa_percpu_priv_s *percpu_priv, |
| 1479 | + const struct qm_fd *fd) |
| 1480 | +{ |
| 1481 | + dma_addr_t addr = qm_fd_addr(fd); |
| 1482 | + struct dpa_bp *dpa_bp = priv->dpa_bp; |
| 1483 | + void *frm = phys_to_virt(addr); |
| 1484 | + fm_prs_result_t *parse_result; |
| 1485 | + |
| 1486 | + if (unlikely(!frm)) |
| 1487 | + return; |
| 1488 | + |
| 1489 | + dma_sync_single_for_cpu(dpa_bp->dev, addr, DPA_RX_PRIV_DATA_SIZE + |
| 1490 | + DPA_PARSE_RESULTS_SIZE, DMA_BIDIRECTIONAL); |
| 1491 | + |
| 1492 | + parse_result = (fm_prs_result_t *)(frm + DPA_RX_PRIV_DATA_SIZE); |
| 1493 | + |
| 1494 | + if (parse_result->cksum != DPA_CSUM_VALID) |
| 1495 | + percpu_priv->rx_errors.cse++; |
| 1496 | +} |
| 1497 | + |
| 1498 | +static void _dpa_rx_error(struct net_device *net_dev, |
| 1499 | + const struct dpa_priv_s *priv, |
| 1500 | + struct dpa_percpu_priv_s *percpu_priv, |
| 1501 | + const struct qm_fd *fd, |
| 1502 | + u32 fqid) |
| 1503 | +{ |
| 1504 | + /* limit common, possibly innocuous Rx FIFO Overflow errors' |
| 1505 | + * interference with zero-loss convergence benchmark results. |
| 1506 | + */ |
| 1507 | + if (likely(fd->status & FM_FD_STAT_ERR_PHYSICAL)) |
| 1508 | + pr_warn_once("fsl-dpa: non-zero error counters in fman statistics (sysfs)\n"); |
| 1509 | + else |
| 1510 | + if (netif_msg_hw(priv) && net_ratelimit()) |
| 1511 | + netdev_dbg(net_dev, "Err FD status = 0x%08x\n", |
| 1512 | + fd->status & FM_FD_STAT_RX_ERRORS); |
| 1513 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 1514 | + if (dpaa_eth_hooks.rx_error && |
| 1515 | + dpaa_eth_hooks.rx_error(net_dev, fd, fqid) == DPAA_ETH_STOLEN) |
| 1516 | + /* it's up to the hook to perform resource cleanup */ |
| 1517 | + return; |
| 1518 | +#endif |
| 1519 | + percpu_priv->stats.rx_errors++; |
| 1520 | + |
| 1521 | + if (fd->status & FM_PORT_FRM_ERR_DMA) |
| 1522 | + percpu_priv->rx_errors.dme++; |
| 1523 | + if (fd->status & FM_PORT_FRM_ERR_PHYSICAL) |
| 1524 | + percpu_priv->rx_errors.fpe++; |
| 1525 | + if (fd->status & FM_PORT_FRM_ERR_SIZE) |
| 1526 | + percpu_priv->rx_errors.fse++; |
| 1527 | + if (fd->status & FM_PORT_FRM_ERR_PRS_HDR_ERR) |
| 1528 | + percpu_priv->rx_errors.phe++; |
| 1529 | + if (fd->status & FM_FD_STAT_L4CV) |
| 1530 | + dpa_csum_validation(priv, percpu_priv, fd); |
| 1531 | + |
| 1532 | + dpa_fd_release(net_dev, fd); |
| 1533 | +} |
| 1534 | + |
| 1535 | +static void _dpa_tx_error(struct net_device *net_dev, |
| 1536 | + const struct dpa_priv_s *priv, |
| 1537 | + struct dpa_percpu_priv_s *percpu_priv, |
| 1538 | + const struct qm_fd *fd, |
| 1539 | + u32 fqid) |
| 1540 | +{ |
| 1541 | + struct sk_buff *skb; |
| 1542 | + |
| 1543 | + if (netif_msg_hw(priv) && net_ratelimit()) |
| 1544 | + netdev_warn(net_dev, "FD status = 0x%08x\n", |
| 1545 | + fd->status & FM_FD_STAT_TX_ERRORS); |
| 1546 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 1547 | + if (dpaa_eth_hooks.tx_error && |
| 1548 | + dpaa_eth_hooks.tx_error(net_dev, fd, fqid) == DPAA_ETH_STOLEN) |
| 1549 | + /* now the hook must ensure proper cleanup */ |
| 1550 | + return; |
| 1551 | +#endif |
| 1552 | + percpu_priv->stats.tx_errors++; |
| 1553 | + |
| 1554 | + /* If we intended the buffers from this frame to go into the bpools |
| 1555 | + * when the FMan transmit was done, we need to put it in manually. |
| 1556 | + */ |
| 1557 | + if (fd->bpid != 0xff) { |
| 1558 | + dpa_fd_release(net_dev, fd); |
| 1559 | + return; |
| 1560 | + } |
| 1561 | + |
| 1562 | + skb = _dpa_cleanup_tx_fd(priv, fd); |
| 1563 | + dev_kfree_skb(skb); |
| 1564 | +} |
| 1565 | + |
| 1566 | +/* Helper function to factor out frame validation logic on all Rx paths. Its |
| 1567 | + * purpose is to extract from the Parse Results structure information about |
| 1568 | + * the integrity of the frame, its checksum, the length of the parsed headers |
| 1569 | + * and whether the frame is suitable for GRO. |
| 1570 | + * |
| 1571 | + * Assumes no parser errors, since any error frame is dropped before this |
| 1572 | + * function is called. |
| 1573 | + * |
| 1574 | + * @skb will have its ip_summed field overwritten; |
| 1575 | + * @use_gro will only be written with 0, if the frame is definitely not |
| 1576 | + * GRO-able; otherwise, it will be left unchanged; |
| 1577 | + * @hdr_size will be written with a safe value, at least the size of the |
| 1578 | + * headers' length. |
| 1579 | + */ |
| 1580 | +void __hot _dpa_process_parse_results(const fm_prs_result_t *parse_results, |
| 1581 | + const struct qm_fd *fd, |
| 1582 | + struct sk_buff *skb, int *use_gro) |
| 1583 | +{ |
| 1584 | + if (fd->status & FM_FD_STAT_L4CV) { |
| 1585 | + /* The parser has run and performed L4 checksum validation. |
| 1586 | + * We know there were no parser errors (and implicitly no |
| 1587 | + * L4 csum error), otherwise we wouldn't be here. |
| 1588 | + */ |
| 1589 | + skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1590 | + |
| 1591 | + /* Don't go through GRO for certain types of traffic that |
| 1592 | + * we know are not GRO-able, such as dgram-based protocols. |
| 1593 | + * In the worst-case scenarios, such as small-pkt terminating |
| 1594 | + * UDP, the extra GRO processing would be overkill. |
| 1595 | + * |
| 1596 | + * The only protocol the Parser supports that is also GRO-able |
| 1597 | + * is currently TCP. |
| 1598 | + */ |
| 1599 | + if (!fm_l4_frame_is_tcp(parse_results)) |
| 1600 | + *use_gro = 0; |
| 1601 | + |
| 1602 | + return; |
| 1603 | + } |
| 1604 | + |
| 1605 | + /* We're here because either the parser didn't run or the L4 checksum |
| 1606 | + * was not verified. This may include the case of a UDP frame with |
| 1607 | + * checksum zero or an L4 proto other than TCP/UDP |
| 1608 | + */ |
| 1609 | + skb->ip_summed = CHECKSUM_NONE; |
| 1610 | + |
| 1611 | + /* Bypass GRO for unknown traffic or if no PCDs are applied */ |
| 1612 | + *use_gro = 0; |
| 1613 | +} |
| 1614 | + |
| 1615 | +int dpaa_eth_poll(struct napi_struct *napi, int budget) |
| 1616 | +{ |
| 1617 | + struct dpa_napi_portal *np = |
| 1618 | + container_of(napi, struct dpa_napi_portal, napi); |
| 1619 | + |
| 1620 | + int cleaned = qman_p_poll_dqrr(np->p, budget); |
| 1621 | + |
| 1622 | + if (cleaned < budget) { |
| 1623 | + int tmp; |
| 1624 | + napi_complete(napi); |
| 1625 | + tmp = qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); |
| 1626 | + DPA_BUG_ON(tmp); |
| 1627 | + } |
| 1628 | + |
| 1629 | + return cleaned; |
| 1630 | +} |
| 1631 | +EXPORT_SYMBOL(dpaa_eth_poll); |
| 1632 | + |
| 1633 | +static void __hot _dpa_tx_conf(struct net_device *net_dev, |
| 1634 | + const struct dpa_priv_s *priv, |
| 1635 | + struct dpa_percpu_priv_s *percpu_priv, |
| 1636 | + const struct qm_fd *fd, |
| 1637 | + u32 fqid) |
| 1638 | +{ |
| 1639 | + struct sk_buff *skb; |
| 1640 | + |
| 1641 | + /* do we need the timestamp for the error frames? */ |
| 1642 | + |
| 1643 | + if (unlikely(fd->status & FM_FD_STAT_TX_ERRORS) != 0) { |
| 1644 | + if (netif_msg_hw(priv) && net_ratelimit()) |
| 1645 | + netdev_warn(net_dev, "FD status = 0x%08x\n", |
| 1646 | + fd->status & FM_FD_STAT_TX_ERRORS); |
| 1647 | + |
| 1648 | + percpu_priv->stats.tx_errors++; |
| 1649 | + } |
| 1650 | + |
| 1651 | + /* hopefully we need not get the timestamp before the hook */ |
| 1652 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 1653 | + if (dpaa_eth_hooks.tx_confirm && dpaa_eth_hooks.tx_confirm(net_dev, |
| 1654 | + fd, fqid) == DPAA_ETH_STOLEN) |
| 1655 | + /* it's the hook that must now perform cleanup */ |
| 1656 | + return; |
| 1657 | +#endif |
| 1658 | + /* This might not perfectly reflect the reality, if the core dequeuing |
| 1659 | + * the Tx confirmation is different from the one that did the enqueue, |
| 1660 | + * but at least it'll show up in the total count. |
| 1661 | + */ |
| 1662 | + percpu_priv->tx_confirm++; |
| 1663 | + |
| 1664 | + skb = _dpa_cleanup_tx_fd(priv, fd); |
| 1665 | + |
| 1666 | + dev_kfree_skb(skb); |
| 1667 | +} |
| 1668 | + |
| 1669 | +enum qman_cb_dqrr_result |
| 1670 | +priv_rx_error_dqrr(struct qman_portal *portal, |
| 1671 | + struct qman_fq *fq, |
| 1672 | + const struct qm_dqrr_entry *dq) |
| 1673 | +{ |
| 1674 | + struct net_device *net_dev; |
| 1675 | + struct dpa_priv_s *priv; |
| 1676 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1677 | + int *count_ptr; |
| 1678 | + |
| 1679 | + net_dev = ((struct dpa_fq *)fq)->net_dev; |
| 1680 | + priv = netdev_priv(net_dev); |
| 1681 | + |
| 1682 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 1683 | + count_ptr = raw_cpu_ptr(priv->dpa_bp->percpu_count); |
| 1684 | + |
| 1685 | + if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
| 1686 | + return qman_cb_dqrr_stop; |
| 1687 | + |
| 1688 | + if (unlikely(dpaa_eth_refill_bpools(priv->dpa_bp, count_ptr))) |
| 1689 | + /* Unable to refill the buffer pool due to insufficient |
| 1690 | + * system memory. Just release the frame back into the pool, |
| 1691 | + * otherwise we'll soon end up with an empty buffer pool. |
| 1692 | + */ |
| 1693 | + dpa_fd_release(net_dev, &dq->fd); |
| 1694 | + else |
| 1695 | + _dpa_rx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
| 1696 | + |
| 1697 | + return qman_cb_dqrr_consume; |
| 1698 | +} |
| 1699 | + |
| 1700 | + |
| 1701 | +enum qman_cb_dqrr_result __hot |
| 1702 | +priv_rx_default_dqrr(struct qman_portal *portal, |
| 1703 | + struct qman_fq *fq, |
| 1704 | + const struct qm_dqrr_entry *dq) |
| 1705 | +{ |
| 1706 | + struct net_device *net_dev; |
| 1707 | + struct dpa_priv_s *priv; |
| 1708 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1709 | + int *count_ptr; |
| 1710 | + struct dpa_bp *dpa_bp; |
| 1711 | + |
| 1712 | + net_dev = ((struct dpa_fq *)fq)->net_dev; |
| 1713 | + priv = netdev_priv(net_dev); |
| 1714 | + dpa_bp = priv->dpa_bp; |
| 1715 | + |
| 1716 | + /* Trace the Rx fd */ |
| 1717 | + trace_dpa_rx_fd(net_dev, fq, &dq->fd); |
| 1718 | + |
| 1719 | + /* IRQ handler, non-migratable; safe to use raw_cpu_ptr here */ |
| 1720 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 1721 | + count_ptr = raw_cpu_ptr(dpa_bp->percpu_count); |
| 1722 | + |
| 1723 | + if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal))) |
| 1724 | + return qman_cb_dqrr_stop; |
| 1725 | + |
| 1726 | + /* Vale of plenty: make sure we didn't run out of buffers */ |
| 1727 | + |
| 1728 | + if (unlikely(dpaa_eth_refill_bpools(dpa_bp, count_ptr))) |
| 1729 | + /* Unable to refill the buffer pool due to insufficient |
| 1730 | + * system memory. Just release the frame back into the pool, |
| 1731 | + * otherwise we'll soon end up with an empty buffer pool. |
| 1732 | + */ |
| 1733 | + dpa_fd_release(net_dev, &dq->fd); |
| 1734 | + else |
| 1735 | + _dpa_rx(net_dev, portal, priv, percpu_priv, &dq->fd, fq->fqid, |
| 1736 | + count_ptr); |
| 1737 | + |
| 1738 | + return qman_cb_dqrr_consume; |
| 1739 | +} |
| 1740 | + |
| 1741 | +enum qman_cb_dqrr_result |
| 1742 | +priv_tx_conf_error_dqrr(struct qman_portal *portal, |
| 1743 | + struct qman_fq *fq, |
| 1744 | + const struct qm_dqrr_entry *dq) |
| 1745 | +{ |
| 1746 | + struct net_device *net_dev; |
| 1747 | + struct dpa_priv_s *priv; |
| 1748 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1749 | + |
| 1750 | + net_dev = ((struct dpa_fq *)fq)->net_dev; |
| 1751 | + priv = netdev_priv(net_dev); |
| 1752 | + |
| 1753 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 1754 | + |
| 1755 | + if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
| 1756 | + return qman_cb_dqrr_stop; |
| 1757 | + |
| 1758 | + _dpa_tx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
| 1759 | + |
| 1760 | + return qman_cb_dqrr_consume; |
| 1761 | +} |
| 1762 | + |
| 1763 | +enum qman_cb_dqrr_result __hot |
| 1764 | +priv_tx_conf_default_dqrr(struct qman_portal *portal, |
| 1765 | + struct qman_fq *fq, |
| 1766 | + const struct qm_dqrr_entry *dq) |
| 1767 | +{ |
| 1768 | + struct net_device *net_dev; |
| 1769 | + struct dpa_priv_s *priv; |
| 1770 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1771 | + |
| 1772 | + net_dev = ((struct dpa_fq *)fq)->net_dev; |
| 1773 | + priv = netdev_priv(net_dev); |
| 1774 | + |
| 1775 | + /* Trace the fd */ |
| 1776 | + trace_dpa_tx_conf_fd(net_dev, fq, &dq->fd); |
| 1777 | + |
| 1778 | + /* Non-migratable context, safe to use raw_cpu_ptr */ |
| 1779 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 1780 | + |
| 1781 | + if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
| 1782 | + return qman_cb_dqrr_stop; |
| 1783 | + |
| 1784 | + _dpa_tx_conf(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
| 1785 | + |
| 1786 | + return qman_cb_dqrr_consume; |
| 1787 | +} |
| 1788 | + |
| 1789 | +void priv_ern(struct qman_portal *portal, |
| 1790 | + struct qman_fq *fq, |
| 1791 | + const struct qm_mr_entry *msg) |
| 1792 | +{ |
| 1793 | + struct net_device *net_dev; |
| 1794 | + const struct dpa_priv_s *priv; |
| 1795 | + struct sk_buff *skb; |
| 1796 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1797 | + struct qm_fd fd = msg->ern.fd; |
| 1798 | + |
| 1799 | + net_dev = ((struct dpa_fq *)fq)->net_dev; |
| 1800 | + priv = netdev_priv(net_dev); |
| 1801 | + /* Non-migratable context, safe to use raw_cpu_ptr */ |
| 1802 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 1803 | + |
| 1804 | + percpu_priv->stats.tx_dropped++; |
| 1805 | + percpu_priv->stats.tx_fifo_errors++; |
| 1806 | + count_ern(percpu_priv, msg); |
| 1807 | + |
| 1808 | + /* If we intended this buffer to go into the pool |
| 1809 | + * when the FM was done, we need to put it in |
| 1810 | + * manually. |
| 1811 | + */ |
| 1812 | + if (msg->ern.fd.bpid != 0xff) { |
| 1813 | + dpa_fd_release(net_dev, &fd); |
| 1814 | + return; |
| 1815 | + } |
| 1816 | + |
| 1817 | + skb = _dpa_cleanup_tx_fd(priv, &fd); |
| 1818 | + dev_kfree_skb_any(skb); |
| 1819 | +} |
| 1820 | + |
| 1821 | +const struct dpa_fq_cbs_t private_fq_cbs = { |
| 1822 | + .rx_defq = { .cb = { .dqrr = priv_rx_default_dqrr } }, |
| 1823 | + .tx_defq = { .cb = { .dqrr = priv_tx_conf_default_dqrr } }, |
| 1824 | + .rx_errq = { .cb = { .dqrr = priv_rx_error_dqrr } }, |
| 1825 | + .tx_errq = { .cb = { .dqrr = priv_tx_conf_error_dqrr } }, |
| 1826 | + .egress_ern = { .cb = { .ern = priv_ern } } |
| 1827 | +}; |
| 1828 | +EXPORT_SYMBOL(private_fq_cbs); |
| 1829 | + |
| 1830 | +static void dpaa_eth_napi_enable(struct dpa_priv_s *priv) |
| 1831 | +{ |
| 1832 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1833 | + int i, j; |
| 1834 | + |
| 1835 | + for_each_possible_cpu(i) { |
| 1836 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 1837 | + |
| 1838 | + for (j = 0; j < qman_portal_max; j++) |
| 1839 | + napi_enable(&percpu_priv->np[j].napi); |
| 1840 | + } |
| 1841 | +} |
| 1842 | + |
| 1843 | +static void dpaa_eth_napi_disable(struct dpa_priv_s *priv) |
| 1844 | +{ |
| 1845 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1846 | + int i, j; |
| 1847 | + |
| 1848 | + for_each_possible_cpu(i) { |
| 1849 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 1850 | + |
| 1851 | + for (j = 0; j < qman_portal_max; j++) |
| 1852 | + napi_disable(&percpu_priv->np[j].napi); |
| 1853 | + } |
| 1854 | +} |
| 1855 | + |
| 1856 | +static int __cold dpa_eth_priv_start(struct net_device *net_dev) |
| 1857 | +{ |
| 1858 | + int err; |
| 1859 | + struct dpa_priv_s *priv; |
| 1860 | + |
| 1861 | + priv = netdev_priv(net_dev); |
| 1862 | + |
| 1863 | + dpaa_eth_napi_enable(priv); |
| 1864 | + |
| 1865 | + err = dpa_start(net_dev); |
| 1866 | + if (err < 0) |
| 1867 | + dpaa_eth_napi_disable(priv); |
| 1868 | + |
| 1869 | + return err; |
| 1870 | +} |
| 1871 | + |
| 1872 | + |
| 1873 | + |
| 1874 | +static int __cold dpa_eth_priv_stop(struct net_device *net_dev) |
| 1875 | +{ |
| 1876 | + int _errno; |
| 1877 | + struct dpa_priv_s *priv; |
| 1878 | + |
| 1879 | + _errno = dpa_stop(net_dev); |
| 1880 | + /* Allow NAPI to consume any frame still in the Rx/TxConfirm |
| 1881 | + * ingress queues. This is to avoid a race between the current |
| 1882 | + * context and ksoftirqd which could leave NAPI disabled while |
| 1883 | + * in fact there's still Rx traffic to be processed. |
| 1884 | + */ |
| 1885 | + usleep_range(5000, 10000); |
| 1886 | + |
| 1887 | + priv = netdev_priv(net_dev); |
| 1888 | + dpaa_eth_napi_disable(priv); |
| 1889 | + |
| 1890 | + return _errno; |
| 1891 | +} |
| 1892 | + |
| 1893 | +#ifdef CONFIG_NET_POLL_CONTROLLER |
| 1894 | +static void dpaa_eth_poll_controller(struct net_device *net_dev) |
| 1895 | +{ |
| 1896 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1897 | + struct dpa_percpu_priv_s *percpu_priv = |
| 1898 | + raw_cpu_ptr(priv->percpu_priv); |
| 1899 | + struct qman_portal *p; |
| 1900 | + const struct qman_portal_config *pc; |
| 1901 | + struct dpa_napi_portal *np; |
| 1902 | + |
| 1903 | + p = (struct qman_portal *)qman_get_affine_portal(smp_processor_id()); |
| 1904 | + pc = qman_p_get_portal_config(p); |
| 1905 | + np = &percpu_priv->np[pc->index]; |
| 1906 | + |
| 1907 | + qman_p_irqsource_remove(np->p, QM_PIRQ_DQRI); |
| 1908 | + qman_p_poll_dqrr(np->p, np->napi.weight); |
| 1909 | + qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); |
| 1910 | +} |
| 1911 | +#endif |
| 1912 | + |
| 1913 | +static const struct net_device_ops dpa_private_ops = { |
| 1914 | + .ndo_open = dpa_eth_priv_start, |
| 1915 | + .ndo_start_xmit = dpa_tx, |
| 1916 | + .ndo_stop = dpa_eth_priv_stop, |
| 1917 | + .ndo_tx_timeout = dpa_timeout, |
| 1918 | + .ndo_get_stats64 = dpa_get_stats64, |
| 1919 | + .ndo_set_mac_address = dpa_set_mac_address, |
| 1920 | + .ndo_validate_addr = eth_validate_addr, |
| 1921 | +#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 1922 | + .ndo_select_queue = dpa_select_queue, |
| 1923 | +#endif |
| 1924 | + .ndo_change_mtu = dpa_change_mtu, |
| 1925 | + .ndo_set_rx_mode = dpa_set_rx_mode, |
| 1926 | + .ndo_init = dpa_ndo_init, |
| 1927 | + .ndo_set_features = dpa_set_features, |
| 1928 | + .ndo_fix_features = dpa_fix_features, |
| 1929 | + .ndo_do_ioctl = dpa_ioctl, |
| 1930 | +#ifdef CONFIG_NET_POLL_CONTROLLER |
| 1931 | + .ndo_poll_controller = dpaa_eth_poll_controller, |
| 1932 | +#endif |
| 1933 | +}; |
| 1934 | + |
| 1935 | +static int dpa_private_napi_add(struct net_device *net_dev) |
| 1936 | +{ |
| 1937 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1938 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1939 | + int i, cpu; |
| 1940 | + |
| 1941 | + for_each_possible_cpu(cpu) { |
| 1942 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); |
| 1943 | + |
| 1944 | + percpu_priv->np = devm_kzalloc(net_dev->dev.parent, |
| 1945 | + qman_portal_max * sizeof(struct dpa_napi_portal), |
| 1946 | + GFP_KERNEL); |
| 1947 | + |
| 1948 | + if (unlikely(percpu_priv->np == NULL)) { |
| 1949 | + dev_err(net_dev->dev.parent, "devm_kzalloc() failed\n"); |
| 1950 | + return -ENOMEM; |
| 1951 | + } |
| 1952 | + |
| 1953 | + for (i = 0; i < qman_portal_max; i++) |
| 1954 | + netif_napi_add(net_dev, &percpu_priv->np[i].napi, |
| 1955 | + dpaa_eth_poll, DPA_NAPI_WEIGHT); |
| 1956 | + } |
| 1957 | + |
| 1958 | + return 0; |
| 1959 | +} |
| 1960 | + |
| 1961 | +void dpa_private_napi_del(struct net_device *net_dev) |
| 1962 | +{ |
| 1963 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1964 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1965 | + int i, cpu; |
| 1966 | + |
| 1967 | + for_each_possible_cpu(cpu) { |
| 1968 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); |
| 1969 | + |
| 1970 | + if (percpu_priv->np) { |
| 1971 | + for (i = 0; i < qman_portal_max; i++) |
| 1972 | + netif_napi_del(&percpu_priv->np[i].napi); |
| 1973 | + |
| 1974 | + devm_kfree(net_dev->dev.parent, percpu_priv->np); |
| 1975 | + } |
| 1976 | + } |
| 1977 | +} |
| 1978 | +EXPORT_SYMBOL(dpa_private_napi_del); |
| 1979 | + |
| 1980 | +static int dpa_private_netdev_init(struct net_device *net_dev) |
| 1981 | +{ |
| 1982 | + int i; |
| 1983 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 1984 | + struct dpa_percpu_priv_s *percpu_priv; |
| 1985 | + const uint8_t *mac_addr; |
| 1986 | + |
| 1987 | + /* Although we access another CPU's private data here |
| 1988 | + * we do it at initialization so it is safe |
| 1989 | + */ |
| 1990 | + for_each_possible_cpu(i) { |
| 1991 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 1992 | + percpu_priv->net_dev = net_dev; |
| 1993 | + } |
| 1994 | + |
| 1995 | + net_dev->netdev_ops = &dpa_private_ops; |
| 1996 | + mac_addr = priv->mac_dev->addr; |
| 1997 | + |
| 1998 | + net_dev->mem_start = priv->mac_dev->res->start; |
| 1999 | + net_dev->mem_end = priv->mac_dev->res->end; |
| 2000 | + |
| 2001 | + net_dev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| 2002 | + NETIF_F_LLTX); |
| 2003 | + |
| 2004 | + /* Advertise S/G and HIGHDMA support for private interfaces */ |
| 2005 | + net_dev->hw_features |= NETIF_F_SG | NETIF_F_HIGHDMA; |
| 2006 | + /* Recent kernels enable GSO automatically, if |
| 2007 | + * we declare NETIF_F_SG. For conformity, we'll |
| 2008 | + * still declare GSO explicitly. |
| 2009 | + */ |
| 2010 | + net_dev->features |= NETIF_F_GSO; |
| 2011 | + |
| 2012 | + /* Advertise GRO support */ |
| 2013 | + net_dev->features |= NETIF_F_GRO; |
| 2014 | + |
| 2015 | + return dpa_netdev_init(net_dev, mac_addr, tx_timeout); |
| 2016 | +} |
| 2017 | + |
| 2018 | +static struct dpa_bp * __cold |
| 2019 | +dpa_priv_bp_probe(struct device *dev) |
| 2020 | +{ |
| 2021 | + struct dpa_bp *dpa_bp; |
| 2022 | + |
| 2023 | + dpa_bp = devm_kzalloc(dev, sizeof(*dpa_bp), GFP_KERNEL); |
| 2024 | + if (unlikely(dpa_bp == NULL)) { |
| 2025 | + dev_err(dev, "devm_kzalloc() failed\n"); |
| 2026 | + return ERR_PTR(-ENOMEM); |
| 2027 | + } |
| 2028 | + |
| 2029 | + dpa_bp->percpu_count = devm_alloc_percpu(dev, *dpa_bp->percpu_count); |
| 2030 | + dpa_bp->target_count = CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT; |
| 2031 | + |
| 2032 | + dpa_bp->seed_cb = dpa_bp_priv_seed; |
| 2033 | + dpa_bp->free_buf_cb = _dpa_bp_free_pf; |
| 2034 | + |
| 2035 | + return dpa_bp; |
| 2036 | +} |
| 2037 | + |
| 2038 | +/* Place all ingress FQs (Rx Default, Rx Error, PCD FQs) in a dedicated CGR. |
| 2039 | + * We won't be sending congestion notifications to FMan; for now, we just use |
| 2040 | + * this CGR to generate enqueue rejections to FMan in order to drop the frames |
| 2041 | + * before they reach our ingress queues and eat up memory. |
| 2042 | + */ |
| 2043 | +static int dpaa_eth_priv_ingress_cgr_init(struct dpa_priv_s *priv) |
| 2044 | +{ |
| 2045 | + struct qm_mcc_initcgr initcgr; |
| 2046 | + u32 cs_th; |
| 2047 | + int err; |
| 2048 | + |
| 2049 | + err = qman_alloc_cgrid(&priv->ingress_cgr.cgrid); |
| 2050 | + if (err < 0) { |
| 2051 | + pr_err("Error %d allocating CGR ID\n", err); |
| 2052 | + goto out_error; |
| 2053 | + } |
| 2054 | + |
| 2055 | + /* Enable CS TD, but disable Congestion State Change Notifications. */ |
| 2056 | + initcgr.we_mask = QM_CGR_WE_CS_THRES; |
| 2057 | + initcgr.cgr.cscn_en = QM_CGR_EN; |
| 2058 | + cs_th = CONFIG_FSL_DPAA_INGRESS_CS_THRESHOLD; |
| 2059 | + qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1); |
| 2060 | + |
| 2061 | + initcgr.we_mask |= QM_CGR_WE_CSTD_EN; |
| 2062 | + initcgr.cgr.cstd_en = QM_CGR_EN; |
| 2063 | + |
| 2064 | + /* This is actually a hack, because this CGR will be associated with |
| 2065 | + * our affine SWP. However, we'll place our ingress FQs in it. |
| 2066 | + */ |
| 2067 | + err = qman_create_cgr(&priv->ingress_cgr, QMAN_CGR_FLAG_USE_INIT, |
| 2068 | + &initcgr); |
| 2069 | + if (err < 0) { |
| 2070 | + pr_err("Error %d creating ingress CGR with ID %d\n", err, |
| 2071 | + priv->ingress_cgr.cgrid); |
| 2072 | + qman_release_cgrid(priv->ingress_cgr.cgrid); |
| 2073 | + goto out_error; |
| 2074 | + } |
| 2075 | + pr_debug("Created ingress CGR %d for netdev with hwaddr %pM\n", |
| 2076 | + priv->ingress_cgr.cgrid, priv->mac_dev->addr); |
| 2077 | + |
| 2078 | + /* struct qman_cgr allows special cgrid values (i.e. outside the 0..255 |
| 2079 | + * range), but we have no common initialization path between the |
| 2080 | + * different variants of the DPAA Eth driver, so we do it here rather |
| 2081 | + * than modifying every other variant than "private Eth". |
| 2082 | + */ |
| 2083 | + priv->use_ingress_cgr = true; |
| 2084 | + |
| 2085 | +out_error: |
| 2086 | + return err; |
| 2087 | +} |
| 2088 | + |
| 2089 | +static int dpa_priv_bp_create(struct net_device *net_dev, struct dpa_bp *dpa_bp, |
| 2090 | + size_t count) |
| 2091 | +{ |
| 2092 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 2093 | + int i; |
| 2094 | + |
| 2095 | + if (netif_msg_probe(priv)) |
| 2096 | + dev_dbg(net_dev->dev.parent, |
| 2097 | + "Using private BM buffer pools\n"); |
| 2098 | + |
| 2099 | + priv->bp_count = count; |
| 2100 | + |
| 2101 | + for (i = 0; i < count; i++) { |
| 2102 | + int err; |
| 2103 | + err = dpa_bp_alloc(&dpa_bp[i]); |
| 2104 | + if (err < 0) { |
| 2105 | + dpa_bp_free(priv); |
| 2106 | + priv->dpa_bp = NULL; |
| 2107 | + return err; |
| 2108 | + } |
| 2109 | + |
| 2110 | + priv->dpa_bp = &dpa_bp[i]; |
| 2111 | + } |
| 2112 | + |
| 2113 | + dpa_priv_common_bpid = priv->dpa_bp->bpid; |
| 2114 | + return 0; |
| 2115 | +} |
| 2116 | + |
| 2117 | +static const struct of_device_id dpa_match[]; |
| 2118 | + |
| 2119 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2120 | +static int dpa_new_loop_id(void) |
| 2121 | +{ |
| 2122 | + static int if_id; |
| 2123 | + |
| 2124 | + return if_id++; |
| 2125 | +} |
| 2126 | +#endif |
| 2127 | + |
| 2128 | +static int |
| 2129 | +dpaa_eth_priv_probe(struct platform_device *_of_dev) |
| 2130 | +{ |
| 2131 | + int err = 0, i, channel; |
| 2132 | + struct device *dev; |
| 2133 | + struct device_node *dpa_node; |
| 2134 | + struct dpa_bp *dpa_bp; |
| 2135 | + size_t count = 1; |
| 2136 | + struct net_device *net_dev = NULL; |
| 2137 | + struct dpa_priv_s *priv = NULL; |
| 2138 | + struct dpa_percpu_priv_s *percpu_priv; |
| 2139 | + struct fm_port_fqs port_fqs; |
| 2140 | + struct dpa_buffer_layout_s *buf_layout = NULL; |
| 2141 | + struct mac_device *mac_dev; |
| 2142 | + |
| 2143 | + dev = &_of_dev->dev; |
| 2144 | + |
| 2145 | + dpa_node = dev->of_node; |
| 2146 | + |
| 2147 | + if (!of_device_is_available(dpa_node)) |
| 2148 | + return -ENODEV; |
| 2149 | + |
| 2150 | + /* Get the buffer pools assigned to this interface; |
| 2151 | + * run only once the default pool probing code |
| 2152 | + */ |
| 2153 | + dpa_bp = (dpa_bpid2pool(dpa_priv_common_bpid)) ? : |
| 2154 | + dpa_priv_bp_probe(dev); |
| 2155 | + if (IS_ERR(dpa_bp)) |
| 2156 | + return PTR_ERR(dpa_bp); |
| 2157 | + |
| 2158 | + /* Allocate this early, so we can store relevant information in |
| 2159 | + * the private area (needed by 1588 code in dpa_mac_probe) |
| 2160 | + */ |
| 2161 | + net_dev = alloc_etherdev_mq(sizeof(*priv), DPAA_ETH_TX_QUEUES); |
| 2162 | + if (!net_dev) { |
| 2163 | + dev_err(dev, "alloc_etherdev_mq() failed\n"); |
| 2164 | + goto alloc_etherdev_mq_failed; |
| 2165 | + } |
| 2166 | + |
| 2167 | + /* Do this here, so we can be verbose early */ |
| 2168 | + SET_NETDEV_DEV(net_dev, dev); |
| 2169 | + dev_set_drvdata(dev, net_dev); |
| 2170 | + |
| 2171 | + priv = netdev_priv(net_dev); |
| 2172 | + priv->net_dev = net_dev; |
| 2173 | + strcpy(priv->if_type, "private"); |
| 2174 | + |
| 2175 | + priv->msg_enable = netif_msg_init(debug, -1); |
| 2176 | + |
| 2177 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2178 | + priv->loop_id = dpa_new_loop_id(); |
| 2179 | + priv->loop_to = -1; /* disabled by default */ |
| 2180 | + dpa_loop_netdevs[priv->loop_id] = net_dev; |
| 2181 | +#endif |
| 2182 | + |
| 2183 | + mac_dev = dpa_mac_probe(_of_dev); |
| 2184 | + if (IS_ERR(mac_dev) || !mac_dev) { |
| 2185 | + err = PTR_ERR(mac_dev); |
| 2186 | + goto mac_probe_failed; |
| 2187 | + } |
| 2188 | + |
| 2189 | + /* We have physical ports, so we need to establish |
| 2190 | + * the buffer layout. |
| 2191 | + */ |
| 2192 | + buf_layout = devm_kzalloc(dev, 2 * sizeof(*buf_layout), |
| 2193 | + GFP_KERNEL); |
| 2194 | + if (!buf_layout) { |
| 2195 | + dev_err(dev, "devm_kzalloc() failed\n"); |
| 2196 | + goto alloc_failed; |
| 2197 | + } |
| 2198 | + dpa_set_buffers_layout(mac_dev, buf_layout); |
| 2199 | + |
| 2200 | + /* For private ports, need to compute the size of the default |
| 2201 | + * buffer pool, based on FMan port buffer layout;also update |
| 2202 | + * the maximum buffer size for private ports if necessary |
| 2203 | + */ |
| 2204 | + dpa_bp->size = dpa_bp_size(&buf_layout[RX]); |
| 2205 | + |
| 2206 | +#ifdef CONFIG_FSL_DPAA_ETH_JUMBO_FRAME |
| 2207 | + /* We only want to use jumbo frame optimization if we actually have |
| 2208 | + * L2 MAX FRM set for jumbo frames as well. |
| 2209 | + */ |
| 2210 | +#ifndef CONFIG_PPC |
| 2211 | + if (likely(!dpaa_errata_a010022)) |
| 2212 | +#endif |
| 2213 | + if(fm_get_max_frm() < 9600) |
| 2214 | + dev_warn(dev, |
| 2215 | + "Invalid configuration: if jumbo frames support is on, FSL_FM_MAX_FRAME_SIZE should be set to 9600\n"); |
| 2216 | +#endif |
| 2217 | + |
| 2218 | + INIT_LIST_HEAD(&priv->dpa_fq_list); |
| 2219 | + |
| 2220 | + memset(&port_fqs, 0, sizeof(port_fqs)); |
| 2221 | + |
| 2222 | + err = dpa_fq_probe_mac(dev, &priv->dpa_fq_list, &port_fqs, true, RX); |
| 2223 | + if (!err) |
| 2224 | + err = dpa_fq_probe_mac(dev, &priv->dpa_fq_list, |
| 2225 | + &port_fqs, true, TX); |
| 2226 | + |
| 2227 | + if (err < 0) |
| 2228 | + goto fq_probe_failed; |
| 2229 | + |
| 2230 | + /* bp init */ |
| 2231 | + |
| 2232 | + err = dpa_priv_bp_create(net_dev, dpa_bp, count); |
| 2233 | + |
| 2234 | + if (err < 0) |
| 2235 | + goto bp_create_failed; |
| 2236 | + |
| 2237 | + priv->mac_dev = mac_dev; |
| 2238 | + |
| 2239 | + channel = dpa_get_channel(); |
| 2240 | + |
| 2241 | + if (channel < 0) { |
| 2242 | + err = channel; |
| 2243 | + goto get_channel_failed; |
| 2244 | + } |
| 2245 | + |
| 2246 | + priv->channel = (uint16_t)channel; |
| 2247 | + dpaa_eth_add_channel(priv->channel); |
| 2248 | + |
| 2249 | + dpa_fq_setup(priv, &private_fq_cbs, priv->mac_dev->port_dev[TX]); |
| 2250 | + |
| 2251 | + /* Create a congestion group for this netdev, with |
| 2252 | + * dynamically-allocated CGR ID. |
| 2253 | + * Must be executed after probing the MAC, but before |
| 2254 | + * assigning the egress FQs to the CGRs. |
| 2255 | + */ |
| 2256 | + err = dpaa_eth_cgr_init(priv); |
| 2257 | + if (err < 0) { |
| 2258 | + dev_err(dev, "Error initializing CGR\n"); |
| 2259 | + goto tx_cgr_init_failed; |
| 2260 | + } |
| 2261 | + err = dpaa_eth_priv_ingress_cgr_init(priv); |
| 2262 | + if (err < 0) { |
| 2263 | + dev_err(dev, "Error initializing ingress CGR\n"); |
| 2264 | + goto rx_cgr_init_failed; |
| 2265 | + } |
| 2266 | + |
| 2267 | + /* Add the FQs to the interface, and make them active */ |
| 2268 | + err = dpa_fqs_init(dev, &priv->dpa_fq_list, false); |
| 2269 | + if (err < 0) |
| 2270 | + goto fq_alloc_failed; |
| 2271 | + |
| 2272 | + priv->buf_layout = buf_layout; |
| 2273 | + priv->tx_headroom = dpa_get_headroom(&priv->buf_layout[TX]); |
| 2274 | + priv->rx_headroom = dpa_get_headroom(&priv->buf_layout[RX]); |
| 2275 | + |
| 2276 | + /* All real interfaces need their ports initialized */ |
| 2277 | + dpaa_eth_init_ports(mac_dev, dpa_bp, count, &port_fqs, |
| 2278 | + buf_layout, dev); |
| 2279 | + |
| 2280 | +#ifdef CONFIG_FMAN_PFC |
| 2281 | + for (i = 0; i < CONFIG_FMAN_PFC_COS_COUNT; i++) { |
| 2282 | + err = fm_port_set_pfc_priorities_mapping_to_qman_wq( |
| 2283 | + mac_dev->port_dev[TX], i, i); |
| 2284 | + if (unlikely(err != 0)) { |
| 2285 | + dev_err(dev, "Error maping PFC %u to WQ %u\n", i, i); |
| 2286 | + goto pfc_mapping_failed; |
| 2287 | + } |
| 2288 | + } |
| 2289 | +#endif |
| 2290 | + |
| 2291 | + priv->percpu_priv = devm_alloc_percpu(dev, *priv->percpu_priv); |
| 2292 | + |
| 2293 | + if (priv->percpu_priv == NULL) { |
| 2294 | + dev_err(dev, "devm_alloc_percpu() failed\n"); |
| 2295 | + err = -ENOMEM; |
| 2296 | + goto alloc_percpu_failed; |
| 2297 | + } |
| 2298 | + for_each_possible_cpu(i) { |
| 2299 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 2300 | + memset(percpu_priv, 0, sizeof(*percpu_priv)); |
| 2301 | + } |
| 2302 | + |
| 2303 | + /* Initialize NAPI */ |
| 2304 | + err = dpa_private_napi_add(net_dev); |
| 2305 | + |
| 2306 | + if (err < 0) |
| 2307 | + goto napi_add_failed; |
| 2308 | + |
| 2309 | + err = dpa_private_netdev_init(net_dev); |
| 2310 | + |
| 2311 | + if (err < 0) |
| 2312 | + goto netdev_init_failed; |
| 2313 | + |
| 2314 | + dpaa_eth_sysfs_init(&net_dev->dev); |
| 2315 | + |
| 2316 | +#ifdef CONFIG_PM |
| 2317 | + device_set_wakeup_capable(dev, true); |
| 2318 | +#endif |
| 2319 | + |
| 2320 | + pr_info("fsl_dpa: Probed interface %s\n", net_dev->name); |
| 2321 | + |
| 2322 | + return 0; |
| 2323 | + |
| 2324 | +netdev_init_failed: |
| 2325 | +napi_add_failed: |
| 2326 | + dpa_private_napi_del(net_dev); |
| 2327 | +alloc_percpu_failed: |
| 2328 | +#ifdef CONFIG_FMAN_PFC |
| 2329 | +pfc_mapping_failed: |
| 2330 | +#endif |
| 2331 | + dpa_fq_free(dev, &priv->dpa_fq_list); |
| 2332 | +fq_alloc_failed: |
| 2333 | + qman_delete_cgr_safe(&priv->ingress_cgr); |
| 2334 | + qman_release_cgrid(priv->ingress_cgr.cgrid); |
| 2335 | +rx_cgr_init_failed: |
| 2336 | + qman_delete_cgr_safe(&priv->cgr_data.cgr); |
| 2337 | + qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
| 2338 | +tx_cgr_init_failed: |
| 2339 | +get_channel_failed: |
| 2340 | + dpa_bp_free(priv); |
| 2341 | +bp_create_failed: |
| 2342 | +fq_probe_failed: |
| 2343 | +alloc_failed: |
| 2344 | +mac_probe_failed: |
| 2345 | + dev_set_drvdata(dev, NULL); |
| 2346 | + free_netdev(net_dev); |
| 2347 | +alloc_etherdev_mq_failed: |
| 2348 | + if (atomic_read(&dpa_bp->refs) == 0) |
| 2349 | + devm_kfree(dev, dpa_bp); |
| 2350 | + |
| 2351 | + return err; |
| 2352 | +} |
| 2353 | + |
| 2354 | +static const struct of_device_id dpa_match[] = { |
| 2355 | + { |
| 2356 | + .compatible = "fsl,dpa-ethernet" |
| 2357 | + }, |
| 2358 | + {} |
| 2359 | +}; |
| 2360 | +MODULE_DEVICE_TABLE(of, dpa_match); |
| 2361 | + |
| 2362 | +static struct platform_driver dpa_driver = { |
| 2363 | + .driver = { |
| 2364 | + .name = KBUILD_MODNAME, |
| 2365 | + .of_match_table = dpa_match, |
| 2366 | + .owner = THIS_MODULE, |
| 2367 | + .pm = DPAA_PM_OPS, |
| 2368 | + }, |
| 2369 | + .probe = dpaa_eth_priv_probe, |
| 2370 | + .remove = dpa_remove |
| 2371 | +}; |
| 2372 | + |
| 2373 | +#ifndef CONFIG_PPC |
| 2374 | +static bool __init __cold soc_has_errata_a010022(void) |
| 2375 | +{ |
| 2376 | +#ifdef CONFIG_SOC_BUS |
| 2377 | + const struct soc_device_attribute soc_msi_matches[] = { |
| 2378 | + { .family = "QorIQ LS1043A", |
| 2379 | + .data = NULL }, |
| 2380 | + { }, |
| 2381 | + }; |
| 2382 | + |
| 2383 | + if (soc_device_match(soc_msi_matches)) |
| 2384 | + return true; |
| 2385 | + |
| 2386 | + return false; |
| 2387 | +#else |
| 2388 | + return true; /* cannot identify SoC */ |
| 2389 | +#endif |
| 2390 | +} |
| 2391 | +#endif |
| 2392 | + |
| 2393 | +static int __init __cold dpa_load(void) |
| 2394 | +{ |
| 2395 | + int _errno; |
| 2396 | + |
| 2397 | + pr_info(DPA_DESCRIPTION "\n"); |
| 2398 | + |
| 2399 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2400 | + dpa_debugfs_module_init(); |
| 2401 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 2402 | + |
| 2403 | + /* initialise dpaa_eth mirror values */ |
| 2404 | + dpa_rx_extra_headroom = fm_get_rx_extra_headroom(); |
| 2405 | + dpa_max_frm = fm_get_max_frm(); |
| 2406 | + dpa_num_cpus = num_possible_cpus(); |
| 2407 | + |
| 2408 | +#ifndef CONFIG_PPC |
| 2409 | + /* Detect if the current SoC requires the 4K alignment workaround */ |
| 2410 | + dpaa_errata_a010022 = soc_has_errata_a010022(); |
| 2411 | +#endif |
| 2412 | + |
| 2413 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2414 | + memset(dpa_loop_netdevs, 0, sizeof(dpa_loop_netdevs)); |
| 2415 | +#endif |
| 2416 | + |
| 2417 | + _errno = platform_driver_register(&dpa_driver); |
| 2418 | + if (unlikely(_errno < 0)) { |
| 2419 | + pr_err(KBUILD_MODNAME |
| 2420 | + ": %s:%hu:%s(): platform_driver_register() = %d\n", |
| 2421 | + KBUILD_BASENAME".c", __LINE__, __func__, _errno); |
| 2422 | + } |
| 2423 | + |
| 2424 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 2425 | + KBUILD_BASENAME".c", __func__); |
| 2426 | + |
| 2427 | + return _errno; |
| 2428 | +} |
| 2429 | +module_init(dpa_load); |
| 2430 | + |
| 2431 | +static void __exit __cold dpa_unload(void) |
| 2432 | +{ |
| 2433 | + pr_debug(KBUILD_MODNAME ": -> %s:%s()\n", |
| 2434 | + KBUILD_BASENAME".c", __func__); |
| 2435 | + |
| 2436 | + platform_driver_unregister(&dpa_driver); |
| 2437 | + |
| 2438 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2439 | + dpa_debugfs_module_exit(); |
| 2440 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 2441 | + |
| 2442 | + /* Only one channel is used and needs to be relased after all |
| 2443 | + * interfaces are removed |
| 2444 | + */ |
| 2445 | + dpa_release_channel(); |
| 2446 | + |
| 2447 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 2448 | + KBUILD_BASENAME".c", __func__); |
| 2449 | +} |
| 2450 | +module_exit(dpa_unload); |
| 2451 | --- /dev/null |
| 2452 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h |
| 2453 | @@ -0,0 +1,697 @@ |
| 2454 | +/* Copyright 2008-2012 Freescale Semiconductor Inc. |
| 2455 | + * |
| 2456 | + * Redistribution and use in source and binary forms, with or without |
| 2457 | + * modification, are permitted provided that the following conditions are met: |
| 2458 | + * * Redistributions of source code must retain the above copyright |
| 2459 | + * notice, this list of conditions and the following disclaimer. |
| 2460 | + * * Redistributions in binary form must reproduce the above copyright |
| 2461 | + * notice, this list of conditions and the following disclaimer in the |
| 2462 | + * documentation and/or other materials provided with the distribution. |
| 2463 | + * * Neither the name of Freescale Semiconductor nor the |
| 2464 | + * names of its contributors may be used to endorse or promote products |
| 2465 | + * derived from this software without specific prior written permission. |
| 2466 | + * |
| 2467 | + * |
| 2468 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 2469 | + * GNU General Public License ("GPL") as published by the Free Software |
| 2470 | + * Foundation, either version 2 of that License or (at your option) any |
| 2471 | + * later version. |
| 2472 | + * |
| 2473 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 2474 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 2475 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 2476 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 2477 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 2478 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 2479 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 2480 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 2481 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 2482 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 2483 | + */ |
| 2484 | + |
| 2485 | +#ifndef __DPA_H |
| 2486 | +#define __DPA_H |
| 2487 | + |
| 2488 | +#include <linux/netdevice.h> |
| 2489 | +#include <linux/fsl_qman.h> /* struct qman_fq */ |
| 2490 | + |
| 2491 | +#include "fm_ext.h" |
| 2492 | +#include "dpaa_eth_trace.h" |
| 2493 | + |
| 2494 | +extern int dpa_rx_extra_headroom; |
| 2495 | +extern int dpa_max_frm; |
| 2496 | +extern int dpa_num_cpus; |
| 2497 | + |
| 2498 | +#define dpa_get_rx_extra_headroom() dpa_rx_extra_headroom |
| 2499 | +#define dpa_get_max_frm() dpa_max_frm |
| 2500 | + |
| 2501 | +#define dpa_get_max_mtu() \ |
| 2502 | + (dpa_get_max_frm() - (VLAN_ETH_HLEN + ETH_FCS_LEN)) |
| 2503 | + |
| 2504 | +#define __hot |
| 2505 | + |
| 2506 | +/* Simple enum of FQ types - used for array indexing */ |
| 2507 | +enum port_type {RX, TX}; |
| 2508 | + |
| 2509 | +/* TODO: This structure should be renamed & moved to the FMD wrapper */ |
| 2510 | +struct dpa_buffer_layout_s { |
| 2511 | + uint16_t priv_data_size; |
| 2512 | + bool parse_results; |
| 2513 | + bool time_stamp; |
| 2514 | + bool hash_results; |
| 2515 | + uint8_t manip_extra_space; |
| 2516 | + uint16_t data_align; |
| 2517 | +}; |
| 2518 | + |
| 2519 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 2520 | +#define DPA_BUG_ON(cond) BUG_ON(cond) |
| 2521 | +#else |
| 2522 | +#define DPA_BUG_ON(cond) |
| 2523 | +#endif |
| 2524 | + |
| 2525 | +#define DPA_TX_PRIV_DATA_SIZE 16 |
| 2526 | +#define DPA_PARSE_RESULTS_SIZE sizeof(fm_prs_result_t) |
| 2527 | +#define DPA_TIME_STAMP_SIZE 8 |
| 2528 | +#define DPA_HASH_RESULTS_SIZE 8 |
| 2529 | +#define DPA_RX_PRIV_DATA_SIZE (DPA_TX_PRIV_DATA_SIZE + \ |
| 2530 | + dpa_get_rx_extra_headroom()) |
| 2531 | + |
| 2532 | +#define FM_FD_STAT_RX_ERRORS \ |
| 2533 | + (FM_PORT_FRM_ERR_DMA | FM_PORT_FRM_ERR_PHYSICAL | \ |
| 2534 | + FM_PORT_FRM_ERR_SIZE | FM_PORT_FRM_ERR_CLS_DISCARD | \ |
| 2535 | + FM_PORT_FRM_ERR_EXTRACTION | FM_PORT_FRM_ERR_NO_SCHEME | \ |
| 2536 | + FM_PORT_FRM_ERR_ILL_PLCR | FM_PORT_FRM_ERR_PRS_TIMEOUT | \ |
| 2537 | + FM_PORT_FRM_ERR_PRS_ILL_INSTRUCT | FM_PORT_FRM_ERR_PRS_HDR_ERR) |
| 2538 | + |
| 2539 | +#define FM_FD_STAT_TX_ERRORS \ |
| 2540 | + (FM_PORT_FRM_ERR_UNSUPPORTED_FORMAT | \ |
| 2541 | + FM_PORT_FRM_ERR_LENGTH | FM_PORT_FRM_ERR_DMA) |
| 2542 | + |
| 2543 | +#ifndef CONFIG_FSL_DPAA_ETH_JUMBO_FRAME |
| 2544 | +/* The raw buffer size must be cacheline aligned. |
| 2545 | + * Normally we use 2K buffers. |
| 2546 | + */ |
| 2547 | +#define DPA_BP_RAW_SIZE 2048 |
| 2548 | +#else |
| 2549 | +/* For jumbo frame optimizations, use buffers large enough to accommodate |
| 2550 | + * 9.6K frames, FD maximum offset, skb sh_info overhead and some extra |
| 2551 | + * space to account for further alignments. |
| 2552 | + */ |
| 2553 | +#define DPA_MAX_FRM_SIZE 9600 |
| 2554 | +#ifdef CONFIG_PPC |
| 2555 | +#define DPA_BP_RAW_SIZE \ |
| 2556 | + ((DPA_MAX_FRM_SIZE + DPA_MAX_FD_OFFSET + \ |
| 2557 | + sizeof(struct skb_shared_info) + 128) & ~(SMP_CACHE_BYTES - 1)) |
| 2558 | +#else /* CONFIG_PPC */ |
| 2559 | +#define DPA_BP_RAW_SIZE ((unlikely(dpaa_errata_a010022)) ? 2048 : \ |
| 2560 | + ((DPA_MAX_FRM_SIZE + DPA_MAX_FD_OFFSET + \ |
| 2561 | + sizeof(struct skb_shared_info) + 128) & ~(SMP_CACHE_BYTES - 1))) |
| 2562 | +#endif /* CONFIG_PPC */ |
| 2563 | +#endif /* CONFIG_FSL_DPAA_ETH_JUMBO_FRAME */ |
| 2564 | + |
| 2565 | +/* This is what FMan is ever allowed to use. |
| 2566 | + * FMan-DMA requires 16-byte alignment for Rx buffers, but SKB_DATA_ALIGN is |
| 2567 | + * even stronger (SMP_CACHE_BYTES-aligned), so we just get away with that, |
| 2568 | + * via SKB_WITH_OVERHEAD(). We can't rely on netdev_alloc_frag() giving us |
| 2569 | + * half-page-aligned buffers (can we?), so we reserve some more space |
| 2570 | + * for start-of-buffer alignment. |
| 2571 | + */ |
| 2572 | +#define dpa_bp_size(buffer_layout) (SKB_WITH_OVERHEAD(DPA_BP_RAW_SIZE) - \ |
| 2573 | + SMP_CACHE_BYTES) |
| 2574 | +/* We must ensure that skb_shinfo is always cacheline-aligned. */ |
| 2575 | +#define DPA_SKB_SIZE(size) ((size) & ~(SMP_CACHE_BYTES - 1)) |
| 2576 | + |
| 2577 | +/* Maximum size of a buffer for which recycling is allowed. |
| 2578 | + * We need an upper limit such that forwarded skbs that get reallocated on Tx |
| 2579 | + * aren't allowed to grow unboundedly. On the other hand, we need to make sure |
| 2580 | + * that skbs allocated by us will not fail to be recycled due to their size. |
| 2581 | + * |
| 2582 | + * For a requested size, the kernel allocator provides the next power of two |
| 2583 | + * sized block, which the stack will use as is, regardless of the actual size |
| 2584 | + * it required; since we must accommodate at most 9.6K buffers (L2 maximum |
| 2585 | + * supported frame size), set the recycling upper limit to 16K. |
| 2586 | + */ |
| 2587 | +#define DPA_RECYCLE_MAX_SIZE 16384 |
| 2588 | + |
| 2589 | +#if defined(CONFIG_FSL_SDK_FMAN_TEST) |
| 2590 | +/*TODO: temporary for fman pcd testing */ |
| 2591 | +#define FMAN_PCD_TESTS_MAX_NUM_RANGES 20 |
| 2592 | +#endif |
| 2593 | + |
| 2594 | +#define DPAA_ETH_FQ_DELTA 0x10000 |
| 2595 | + |
| 2596 | +#define DPAA_ETH_PCD_FQ_BASE(device_addr) \ |
| 2597 | + (((device_addr) & 0x1fffff) >> 6) |
| 2598 | + |
| 2599 | +#define DPAA_ETH_PCD_FQ_HI_PRIO_BASE(device_addr) \ |
| 2600 | + (DPAA_ETH_FQ_DELTA + DPAA_ETH_PCD_FQ_BASE(device_addr)) |
| 2601 | + |
| 2602 | +/* Largest value that the FQD's OAL field can hold. |
| 2603 | + * This is DPAA-1.x specific. |
| 2604 | + * TODO: This rather belongs in fsl_qman.h |
| 2605 | + */ |
| 2606 | +#define FSL_QMAN_MAX_OAL 127 |
| 2607 | + |
| 2608 | +/* Maximum offset value for a contig or sg FD (represented on 9 bits) */ |
| 2609 | +#define DPA_MAX_FD_OFFSET ((1 << 9) - 1) |
| 2610 | + |
| 2611 | +/* Default alignment for start of data in an Rx FD */ |
| 2612 | +#define DPA_FD_DATA_ALIGNMENT 16 |
| 2613 | + |
| 2614 | +/* Values for the L3R field of the FM Parse Results |
| 2615 | + */ |
| 2616 | +/* L3 Type field: First IP Present IPv4 */ |
| 2617 | +#define FM_L3_PARSE_RESULT_IPV4 0x8000 |
| 2618 | +/* L3 Type field: First IP Present IPv6 */ |
| 2619 | +#define FM_L3_PARSE_RESULT_IPV6 0x4000 |
| 2620 | + |
| 2621 | +/* Values for the L4R field of the FM Parse Results |
| 2622 | + * See $8.8.4.7.20 - L4 HXS - L4 Results from DPAA-Rev2 Reference Manual. |
| 2623 | + */ |
| 2624 | +/* L4 Type field: UDP */ |
| 2625 | +#define FM_L4_PARSE_RESULT_UDP 0x40 |
| 2626 | +/* L4 Type field: TCP */ |
| 2627 | +#define FM_L4_PARSE_RESULT_TCP 0x20 |
| 2628 | +/* FD status field indicating whether the FM Parser has attempted to validate |
| 2629 | + * the L4 csum of the frame. |
| 2630 | + * Note that having this bit set doesn't necessarily imply that the checksum |
| 2631 | + * is valid. One would have to check the parse results to find that out. |
| 2632 | + */ |
| 2633 | +#define FM_FD_STAT_L4CV 0x00000004 |
| 2634 | + |
| 2635 | + |
| 2636 | +#define FM_FD_STAT_ERR_PHYSICAL FM_PORT_FRM_ERR_PHYSICAL |
| 2637 | + |
| 2638 | +/* Check if the parsed frame was found to be a TCP segment. |
| 2639 | + * |
| 2640 | + * @parse_result_ptr must be of type (fm_prs_result_t *). |
| 2641 | + */ |
| 2642 | +#define fm_l4_frame_is_tcp(parse_result_ptr) \ |
| 2643 | + ((parse_result_ptr)->l4r & FM_L4_PARSE_RESULT_TCP) |
| 2644 | + |
| 2645 | +/* number of Tx queues to FMan */ |
| 2646 | +#ifdef CONFIG_FMAN_PFC |
| 2647 | +#define DPAA_ETH_TX_QUEUES (NR_CPUS * CONFIG_FMAN_PFC_COS_COUNT) |
| 2648 | +#else |
| 2649 | +#define DPAA_ETH_TX_QUEUES NR_CPUS |
| 2650 | +#endif |
| 2651 | + |
| 2652 | +#define DPAA_ETH_RX_QUEUES 128 |
| 2653 | + |
| 2654 | +/* Convenience macros for storing/retrieving the skb back-pointers. They must |
| 2655 | + * accommodate both recycling and confirmation paths - i.e. cases when the buf |
| 2656 | + * was allocated by ourselves, respectively by the stack. In the former case, |
| 2657 | + * we could store the skb at negative offset; in the latter case, we can't, |
| 2658 | + * so we'll use 0 as offset. |
| 2659 | + * |
| 2660 | + * NB: @off is an offset from a (struct sk_buff **) pointer! |
| 2661 | + */ |
| 2662 | +#define DPA_WRITE_SKB_PTR(skb, skbh, addr, off) \ |
| 2663 | +{ \ |
| 2664 | + skbh = (struct sk_buff **)addr; \ |
| 2665 | + *(skbh + (off)) = skb; \ |
| 2666 | +} |
| 2667 | +#define DPA_READ_SKB_PTR(skb, skbh, addr, off) \ |
| 2668 | +{ \ |
| 2669 | + skbh = (struct sk_buff **)addr; \ |
| 2670 | + skb = *(skbh + (off)); \ |
| 2671 | +} |
| 2672 | + |
| 2673 | +#ifdef CONFIG_PM |
| 2674 | +/* Magic Packet wakeup */ |
| 2675 | +#define DPAA_WOL_MAGIC 0x00000001 |
| 2676 | +#endif |
| 2677 | + |
| 2678 | +#if defined(CONFIG_FSL_SDK_FMAN_TEST) |
| 2679 | +struct pcd_range { |
| 2680 | + uint32_t base; |
| 2681 | + uint32_t count; |
| 2682 | +}; |
| 2683 | +#endif |
| 2684 | + |
| 2685 | +/* More detailed FQ types - used for fine-grained WQ assignments */ |
| 2686 | +enum dpa_fq_type { |
| 2687 | + FQ_TYPE_RX_DEFAULT = 1, /* Rx Default FQs */ |
| 2688 | + FQ_TYPE_RX_ERROR, /* Rx Error FQs */ |
| 2689 | + FQ_TYPE_RX_PCD, /* User-defined PCDs */ |
| 2690 | + FQ_TYPE_TX, /* "Real" Tx FQs */ |
| 2691 | + FQ_TYPE_TX_CONFIRM, /* Tx default Conf FQ (actually an Rx FQ) */ |
| 2692 | + FQ_TYPE_TX_CONF_MQ, /* Tx conf FQs (one for each Tx FQ) */ |
| 2693 | + FQ_TYPE_TX_ERROR, /* Tx Error FQs (these are actually Rx FQs) */ |
| 2694 | + FQ_TYPE_RX_PCD_HI_PRIO, /* User-defined high-priority PCDs */ |
| 2695 | +}; |
| 2696 | + |
| 2697 | +struct dpa_fq { |
| 2698 | + struct qman_fq fq_base; |
| 2699 | + struct list_head list; |
| 2700 | + struct net_device *net_dev; |
| 2701 | + bool init; |
| 2702 | + uint32_t fqid; |
| 2703 | + uint32_t flags; |
| 2704 | + uint16_t channel; |
| 2705 | + uint8_t wq; |
| 2706 | + enum dpa_fq_type fq_type; |
| 2707 | +}; |
| 2708 | + |
| 2709 | +struct dpa_fq_cbs_t { |
| 2710 | + struct qman_fq rx_defq; |
| 2711 | + struct qman_fq tx_defq; |
| 2712 | + struct qman_fq rx_errq; |
| 2713 | + struct qman_fq tx_errq; |
| 2714 | + struct qman_fq egress_ern; |
| 2715 | +}; |
| 2716 | + |
| 2717 | +struct fqid_cell { |
| 2718 | + uint32_t start; |
| 2719 | + uint32_t count; |
| 2720 | +}; |
| 2721 | + |
| 2722 | +struct dpa_bp { |
| 2723 | + struct bman_pool *pool; |
| 2724 | + uint8_t bpid; |
| 2725 | + struct device *dev; |
| 2726 | + union { |
| 2727 | + /* The buffer pools used for the private ports are initialized |
| 2728 | + * with target_count buffers for each CPU; at runtime the |
| 2729 | + * number of buffers per CPU is constantly brought back to this |
| 2730 | + * level |
| 2731 | + */ |
| 2732 | + int target_count; |
| 2733 | + /* The configured value for the number of buffers in the pool, |
| 2734 | + * used for shared port buffer pools |
| 2735 | + */ |
| 2736 | + int config_count; |
| 2737 | + }; |
| 2738 | + size_t size; |
| 2739 | + bool seed_pool; |
| 2740 | + /* physical address of the contiguous memory used by the pool to store |
| 2741 | + * the buffers |
| 2742 | + */ |
| 2743 | + dma_addr_t paddr; |
| 2744 | + /* virtual address of the contiguous memory used by the pool to store |
| 2745 | + * the buffers |
| 2746 | + */ |
| 2747 | + void __iomem *vaddr; |
| 2748 | + /* current number of buffers in the bpool alloted to this CPU */ |
| 2749 | + int __percpu *percpu_count; |
| 2750 | + atomic_t refs; |
| 2751 | + /* some bpools need to be seeded before use by this cb */ |
| 2752 | + int (*seed_cb)(struct dpa_bp *); |
| 2753 | + /* some bpools need to be emptied before freeing; this cb is used |
| 2754 | + * for freeing of individual buffers taken from the pool |
| 2755 | + */ |
| 2756 | + void (*free_buf_cb)(void *addr); |
| 2757 | +}; |
| 2758 | + |
| 2759 | +struct dpa_rx_errors { |
| 2760 | + u64 dme; /* DMA Error */ |
| 2761 | + u64 fpe; /* Frame Physical Error */ |
| 2762 | + u64 fse; /* Frame Size Error */ |
| 2763 | + u64 phe; /* Header Error */ |
| 2764 | + u64 cse; /* Checksum Validation Error */ |
| 2765 | +}; |
| 2766 | + |
| 2767 | +/* Counters for QMan ERN frames - one counter per rejection code */ |
| 2768 | +struct dpa_ern_cnt { |
| 2769 | + u64 cg_tdrop; /* Congestion group taildrop */ |
| 2770 | + u64 wred; /* WRED congestion */ |
| 2771 | + u64 err_cond; /* Error condition */ |
| 2772 | + u64 early_window; /* Order restoration, frame too early */ |
| 2773 | + u64 late_window; /* Order restoration, frame too late */ |
| 2774 | + u64 fq_tdrop; /* FQ taildrop */ |
| 2775 | + u64 fq_retired; /* FQ is retired */ |
| 2776 | + u64 orp_zero; /* ORP disabled */ |
| 2777 | +}; |
| 2778 | + |
| 2779 | +struct dpa_napi_portal { |
| 2780 | + struct napi_struct napi; |
| 2781 | + struct qman_portal *p; |
| 2782 | +}; |
| 2783 | + |
| 2784 | +struct dpa_percpu_priv_s { |
| 2785 | + struct net_device *net_dev; |
| 2786 | + struct dpa_napi_portal *np; |
| 2787 | + u64 in_interrupt; |
| 2788 | + u64 tx_returned; |
| 2789 | + u64 tx_confirm; |
| 2790 | + /* fragmented (non-linear) skbuffs received from the stack */ |
| 2791 | + u64 tx_frag_skbuffs; |
| 2792 | + /* number of S/G frames received */ |
| 2793 | + u64 rx_sg; |
| 2794 | + |
| 2795 | + struct rtnl_link_stats64 stats; |
| 2796 | + struct dpa_rx_errors rx_errors; |
| 2797 | + struct dpa_ern_cnt ern_cnt; |
| 2798 | +}; |
| 2799 | + |
| 2800 | +struct dpa_priv_s { |
| 2801 | + struct dpa_percpu_priv_s __percpu *percpu_priv; |
| 2802 | + struct dpa_bp *dpa_bp; |
| 2803 | + /* Store here the needed Tx headroom for convenience and speed |
| 2804 | + * (even though it can be computed based on the fields of buf_layout) |
| 2805 | + */ |
| 2806 | + uint16_t tx_headroom; |
| 2807 | + struct net_device *net_dev; |
| 2808 | + struct mac_device *mac_dev; |
| 2809 | + struct qman_fq *egress_fqs[DPAA_ETH_TX_QUEUES]; |
| 2810 | + struct qman_fq *conf_fqs[DPAA_ETH_TX_QUEUES]; |
| 2811 | + |
| 2812 | + size_t bp_count; |
| 2813 | + |
| 2814 | + uint16_t channel; /* "fsl,qman-channel-id" */ |
| 2815 | + struct list_head dpa_fq_list; |
| 2816 | + |
| 2817 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2818 | + struct dentry *debugfs_loop_file; |
| 2819 | +#endif |
| 2820 | + |
| 2821 | + uint32_t msg_enable; /* net_device message level */ |
| 2822 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 2823 | + struct dpa_ptp_tsu *tsu; |
| 2824 | +#endif |
| 2825 | + |
| 2826 | +#if defined(CONFIG_FSL_SDK_FMAN_TEST) |
| 2827 | +/* TODO: this is temporary until pcd support is implemented in dpaa */ |
| 2828 | + int priv_pcd_num_ranges; |
| 2829 | + struct pcd_range priv_pcd_ranges[FMAN_PCD_TESTS_MAX_NUM_RANGES]; |
| 2830 | +#endif |
| 2831 | + |
| 2832 | + struct { |
| 2833 | + /** |
| 2834 | + * All egress queues to a given net device belong to one |
| 2835 | + * (and the same) congestion group. |
| 2836 | + */ |
| 2837 | + struct qman_cgr cgr; |
| 2838 | + /* If congested, when it began. Used for performance stats. */ |
| 2839 | + u32 congestion_start_jiffies; |
| 2840 | + /* Number of jiffies the Tx port was congested. */ |
| 2841 | + u32 congested_jiffies; |
| 2842 | + /** |
| 2843 | + * Counter for the number of times the CGR |
| 2844 | + * entered congestion state |
| 2845 | + */ |
| 2846 | + u32 cgr_congested_count; |
| 2847 | + } cgr_data; |
| 2848 | + /* Use a per-port CGR for ingress traffic. */ |
| 2849 | + bool use_ingress_cgr; |
| 2850 | + struct qman_cgr ingress_cgr; |
| 2851 | + |
| 2852 | +#ifdef CONFIG_FSL_DPAA_TS |
| 2853 | + bool ts_tx_en; /* Tx timestamping enabled */ |
| 2854 | + bool ts_rx_en; /* Rx timestamping enabled */ |
| 2855 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 2856 | + |
| 2857 | + struct dpa_buffer_layout_s *buf_layout; |
| 2858 | + uint16_t rx_headroom; |
| 2859 | + char if_type[30]; |
| 2860 | + |
| 2861 | + void *peer; |
| 2862 | +#ifdef CONFIG_PM |
| 2863 | + u32 wol; |
| 2864 | +#endif |
| 2865 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2866 | + int loop_id; |
| 2867 | + int loop_to; |
| 2868 | +#endif |
| 2869 | +#ifdef CONFIG_FSL_DPAA_CEETM |
| 2870 | + bool ceetm_en; /* CEETM QoS enabled */ |
| 2871 | +#endif |
| 2872 | +}; |
| 2873 | + |
| 2874 | +struct fm_port_fqs { |
| 2875 | + struct dpa_fq *tx_defq; |
| 2876 | + struct dpa_fq *tx_errq; |
| 2877 | + struct dpa_fq *rx_defq; |
| 2878 | + struct dpa_fq *rx_errq; |
| 2879 | +}; |
| 2880 | + |
| 2881 | + |
| 2882 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 2883 | +extern struct net_device *dpa_loop_netdevs[20]; |
| 2884 | +#endif |
| 2885 | + |
| 2886 | +/* functions with different implementation for SG and non-SG: */ |
| 2887 | +int dpa_bp_priv_seed(struct dpa_bp *dpa_bp); |
| 2888 | +int dpaa_eth_refill_bpools(struct dpa_bp *dpa_bp, int *count_ptr); |
| 2889 | +void __hot _dpa_rx(struct net_device *net_dev, |
| 2890 | + struct qman_portal *portal, |
| 2891 | + const struct dpa_priv_s *priv, |
| 2892 | + struct dpa_percpu_priv_s *percpu_priv, |
| 2893 | + const struct qm_fd *fd, |
| 2894 | + u32 fqid, |
| 2895 | + int *count_ptr); |
| 2896 | +int __hot dpa_tx(struct sk_buff *skb, struct net_device *net_dev); |
| 2897 | +int __hot dpa_tx_extended(struct sk_buff *skb, struct net_device *net_dev, |
| 2898 | + struct qman_fq *egress_fq, struct qman_fq *conf_fq); |
| 2899 | +struct sk_buff *_dpa_cleanup_tx_fd(const struct dpa_priv_s *priv, |
| 2900 | + const struct qm_fd *fd); |
| 2901 | +void __hot _dpa_process_parse_results(const fm_prs_result_t *parse_results, |
| 2902 | + const struct qm_fd *fd, |
| 2903 | + struct sk_buff *skb, |
| 2904 | + int *use_gro); |
| 2905 | +#ifndef CONFIG_FSL_DPAA_TS |
| 2906 | +bool dpa_skb_is_recyclable(struct sk_buff *skb); |
| 2907 | +bool dpa_buf_is_recyclable(struct sk_buff *skb, |
| 2908 | + uint32_t min_size, |
| 2909 | + uint16_t min_offset, |
| 2910 | + unsigned char **new_buf_start); |
| 2911 | +#endif |
| 2912 | +int __hot skb_to_contig_fd(struct dpa_priv_s *priv, |
| 2913 | + struct sk_buff *skb, struct qm_fd *fd, |
| 2914 | + int *count_ptr, int *offset); |
| 2915 | +int __hot skb_to_sg_fd(struct dpa_priv_s *priv, |
| 2916 | + struct sk_buff *skb, struct qm_fd *fd); |
| 2917 | +int __cold __attribute__((nonnull)) |
| 2918 | + _dpa_fq_free(struct device *dev, struct qman_fq *fq); |
| 2919 | + |
| 2920 | +/* Turn on HW checksum computation for this outgoing frame. |
| 2921 | + * If the current protocol is not something we support in this regard |
| 2922 | + * (or if the stack has already computed the SW checksum), we do nothing. |
| 2923 | + * |
| 2924 | + * Returns 0 if all goes well (or HW csum doesn't apply), and a negative value |
| 2925 | + * otherwise. |
| 2926 | + * |
| 2927 | + * Note that this function may modify the fd->cmd field and the skb data buffer |
| 2928 | + * (the Parse Results area). |
| 2929 | + */ |
| 2930 | +int dpa_enable_tx_csum(struct dpa_priv_s *priv, |
| 2931 | + struct sk_buff *skb, struct qm_fd *fd, char *parse_results); |
| 2932 | + |
| 2933 | +static inline int dpaa_eth_napi_schedule(struct dpa_percpu_priv_s *percpu_priv, |
| 2934 | + struct qman_portal *portal) |
| 2935 | +{ |
| 2936 | + /* In case of threaded ISR for RT enable kernel, |
| 2937 | + * in_irq() does not return appropriate value, so use |
| 2938 | + * in_serving_softirq to distinguish softirq or irq context. |
| 2939 | + */ |
| 2940 | + if (unlikely(in_irq() || !in_serving_softirq())) { |
| 2941 | + /* Disable QMan IRQ and invoke NAPI */ |
| 2942 | + int ret = qman_p_irqsource_remove(portal, QM_PIRQ_DQRI); |
| 2943 | + if (likely(!ret)) { |
| 2944 | + const struct qman_portal_config *pc = |
| 2945 | + qman_p_get_portal_config(portal); |
| 2946 | + struct dpa_napi_portal *np = |
| 2947 | + &percpu_priv->np[pc->index]; |
| 2948 | + |
| 2949 | + np->p = portal; |
| 2950 | + napi_schedule(&np->napi); |
| 2951 | + percpu_priv->in_interrupt++; |
| 2952 | + return 1; |
| 2953 | + } |
| 2954 | + } |
| 2955 | + return 0; |
| 2956 | +} |
| 2957 | + |
| 2958 | +static inline ssize_t __const __must_check __attribute__((nonnull)) |
| 2959 | +dpa_fd_length(const struct qm_fd *fd) |
| 2960 | +{ |
| 2961 | + return fd->length20; |
| 2962 | +} |
| 2963 | + |
| 2964 | +static inline ssize_t __const __must_check __attribute__((nonnull)) |
| 2965 | +dpa_fd_offset(const struct qm_fd *fd) |
| 2966 | +{ |
| 2967 | + return fd->offset; |
| 2968 | +} |
| 2969 | + |
| 2970 | +/* Verifies if the skb length is below the interface MTU */ |
| 2971 | +static inline int dpa_check_rx_mtu(struct sk_buff *skb, int mtu) |
| 2972 | +{ |
| 2973 | + if (unlikely(skb->len > mtu)) |
| 2974 | + if ((skb->protocol != htons(ETH_P_8021Q)) |
| 2975 | + || (skb->len > mtu + 4)) |
| 2976 | + return -1; |
| 2977 | + |
| 2978 | + return 0; |
| 2979 | +} |
| 2980 | + |
| 2981 | +static inline uint16_t dpa_get_headroom(struct dpa_buffer_layout_s *bl) |
| 2982 | +{ |
| 2983 | + uint16_t headroom; |
| 2984 | + /* The frame headroom must accommodate: |
| 2985 | + * - the driver private data area |
| 2986 | + * - parse results, hash results, timestamp if selected |
| 2987 | + * - manip extra space |
| 2988 | + * If either hash results or time stamp are selected, both will |
| 2989 | + * be copied to/from the frame headroom, as TS is located between PR and |
| 2990 | + * HR in the IC and IC copy size has a granularity of 16bytes |
| 2991 | + * (see description of FMBM_RICP and FMBM_TICP registers in DPAARM) |
| 2992 | + * |
| 2993 | + * Also make sure the headroom is a multiple of data_align bytes |
| 2994 | + */ |
| 2995 | + headroom = (uint16_t)(bl->priv_data_size + |
| 2996 | + (bl->parse_results ? DPA_PARSE_RESULTS_SIZE : 0) + |
| 2997 | + (bl->hash_results || bl->time_stamp ? |
| 2998 | + DPA_TIME_STAMP_SIZE + DPA_HASH_RESULTS_SIZE : 0) + |
| 2999 | + bl->manip_extra_space); |
| 3000 | + |
| 3001 | + return bl->data_align ? ALIGN(headroom, bl->data_align) : headroom; |
| 3002 | +} |
| 3003 | + |
| 3004 | +int fm_mac_dump_regs(struct mac_device *h_dev, char *buf, int n); |
| 3005 | +int fm_mac_dump_rx_stats(struct mac_device *h_dev, char *buf, int n); |
| 3006 | +int fm_mac_dump_tx_stats(struct mac_device *h_dev, char *buf, int n); |
| 3007 | + |
| 3008 | +void dpaa_eth_sysfs_remove(struct device *dev); |
| 3009 | +void dpaa_eth_sysfs_init(struct device *dev); |
| 3010 | +int dpaa_eth_poll(struct napi_struct *napi, int budget); |
| 3011 | + |
| 3012 | +void dpa_private_napi_del(struct net_device *net_dev); |
| 3013 | + |
| 3014 | +/* Equivalent to a memset(0), but works faster */ |
| 3015 | +static inline void clear_fd(struct qm_fd *fd) |
| 3016 | +{ |
| 3017 | + fd->opaque_addr = 0; |
| 3018 | + fd->opaque = 0; |
| 3019 | + fd->cmd = 0; |
| 3020 | +} |
| 3021 | + |
| 3022 | +static inline int _dpa_tx_fq_to_id(const struct dpa_priv_s *priv, |
| 3023 | + struct qman_fq *tx_fq) |
| 3024 | +{ |
| 3025 | + int i; |
| 3026 | + |
| 3027 | + for (i = 0; i < DPAA_ETH_TX_QUEUES; i++) |
| 3028 | + if (priv->egress_fqs[i] == tx_fq) |
| 3029 | + return i; |
| 3030 | + |
| 3031 | + return -EINVAL; |
| 3032 | +} |
| 3033 | + |
| 3034 | +static inline int __hot dpa_xmit(struct dpa_priv_s *priv, |
| 3035 | + struct rtnl_link_stats64 *percpu_stats, |
| 3036 | + struct qm_fd *fd, struct qman_fq *egress_fq, |
| 3037 | + struct qman_fq *conf_fq) |
| 3038 | +{ |
| 3039 | + int err, i; |
| 3040 | + |
| 3041 | + if (fd->bpid == 0xff) |
| 3042 | + fd->cmd |= qman_fq_fqid(conf_fq); |
| 3043 | + |
| 3044 | + /* Trace this Tx fd */ |
| 3045 | + trace_dpa_tx_fd(priv->net_dev, egress_fq, fd); |
| 3046 | + |
| 3047 | + for (i = 0; i < 100000; i++) { |
| 3048 | + err = qman_enqueue(egress_fq, fd, 0); |
| 3049 | + if (err != -EBUSY) |
| 3050 | + break; |
| 3051 | + } |
| 3052 | + |
| 3053 | + if (unlikely(err < 0)) { |
| 3054 | + /* TODO differentiate b/w -EBUSY (EQCR full) and other codes? */ |
| 3055 | + percpu_stats->tx_errors++; |
| 3056 | + percpu_stats->tx_fifo_errors++; |
| 3057 | + return err; |
| 3058 | + } |
| 3059 | + |
| 3060 | + percpu_stats->tx_packets++; |
| 3061 | + percpu_stats->tx_bytes += dpa_fd_length(fd); |
| 3062 | + |
| 3063 | + return 0; |
| 3064 | +} |
| 3065 | + |
| 3066 | +/* Use multiple WQs for FQ assignment: |
| 3067 | + * - Tx Confirmation queues go to WQ1. |
| 3068 | + * - Rx Default, Tx and PCD queues go to WQ3 (no differentiation between |
| 3069 | + * Rx and Tx traffic, or between Rx Default and Rx PCD frames). |
| 3070 | + * - Rx Error and Tx Error queues go to WQ2 (giving them a better chance |
| 3071 | + * to be scheduled, in case there are many more FQs in WQ3). |
| 3072 | + * This ensures that Tx-confirmed buffers are timely released. In particular, |
| 3073 | + * it avoids congestion on the Tx Confirm FQs, which can pile up PFDRs if they |
| 3074 | + * are greatly outnumbered by other FQs in the system (usually PCDs), while |
| 3075 | + * dequeue scheduling is round-robin. |
| 3076 | + */ |
| 3077 | +static inline void _dpa_assign_wq(struct dpa_fq *fq) |
| 3078 | +{ |
| 3079 | + switch (fq->fq_type) { |
| 3080 | + case FQ_TYPE_TX_CONFIRM: |
| 3081 | + case FQ_TYPE_TX_CONF_MQ: |
| 3082 | + fq->wq = 1; |
| 3083 | + break; |
| 3084 | + case FQ_TYPE_RX_DEFAULT: |
| 3085 | + case FQ_TYPE_TX: |
| 3086 | + fq->wq = 3; |
| 3087 | + break; |
| 3088 | + case FQ_TYPE_RX_ERROR: |
| 3089 | + case FQ_TYPE_TX_ERROR: |
| 3090 | + case FQ_TYPE_RX_PCD_HI_PRIO: |
| 3091 | + fq->wq = 2; |
| 3092 | + break; |
| 3093 | + case FQ_TYPE_RX_PCD: |
| 3094 | + fq->wq = 5; |
| 3095 | + break; |
| 3096 | + default: |
| 3097 | + WARN(1, "Invalid FQ type %d for FQID %d!\n", |
| 3098 | + fq->fq_type, fq->fqid); |
| 3099 | + } |
| 3100 | +} |
| 3101 | + |
| 3102 | +#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 3103 | +/* Use in lieu of skb_get_queue_mapping() */ |
| 3104 | +#ifdef CONFIG_FMAN_PFC |
| 3105 | +#define dpa_get_queue_mapping(skb) \ |
| 3106 | + (((skb)->priority < CONFIG_FMAN_PFC_COS_COUNT) ? \ |
| 3107 | + ((skb)->priority * dpa_num_cpus + smp_processor_id()) : \ |
| 3108 | + ((CONFIG_FMAN_PFC_COS_COUNT - 1) * \ |
| 3109 | + dpa_num_cpus + smp_processor_id())); |
| 3110 | + |
| 3111 | +#else |
| 3112 | +#define dpa_get_queue_mapping(skb) \ |
| 3113 | + raw_smp_processor_id() |
| 3114 | +#endif |
| 3115 | +#else |
| 3116 | +/* Use the queue selected by XPS */ |
| 3117 | +#define dpa_get_queue_mapping(skb) \ |
| 3118 | + skb_get_queue_mapping(skb) |
| 3119 | +#endif |
| 3120 | + |
| 3121 | +#ifdef CONFIG_PTP_1588_CLOCK_DPAA |
| 3122 | +struct ptp_priv_s { |
| 3123 | + struct device_node *node; |
| 3124 | + struct platform_device *of_dev; |
| 3125 | + struct mac_device *mac_dev; |
| 3126 | +}; |
| 3127 | +extern struct ptp_priv_s ptp_priv; |
| 3128 | +#endif |
| 3129 | + |
| 3130 | +static inline void _dpa_bp_free_pf(void *addr) |
| 3131 | +{ |
| 3132 | + put_page(virt_to_head_page(addr)); |
| 3133 | +} |
| 3134 | + |
| 3135 | +/* TODO: LS1043A SoC has a HW issue regarding FMan DMA transactions; The issue |
| 3136 | + * manifests itself at high traffic rates when frames exceed 4K memory |
| 3137 | + * boundaries; For the moment, we use a SW workaround to avoid frames larger |
| 3138 | + * than 4K or that exceed 4K alignments. |
| 3139 | + */ |
| 3140 | + |
| 3141 | +#ifndef CONFIG_PPC |
| 3142 | +extern bool dpaa_errata_a010022; /* SoC affected by A010022 errata */ |
| 3143 | + |
| 3144 | +#define HAS_DMA_ISSUE(start, size) \ |
| 3145 | + (((u64)(start) + (size)) > (((u64)(start) + 0x1000) & ~0xFFF)) |
| 3146 | +#define BOUNDARY_4K(start, size) (((u64)(start) + (u64)(size)) & ~0xFFF) |
| 3147 | + |
| 3148 | +#endif /* !CONFIG_PPC */ |
| 3149 | + |
| 3150 | +#endif /* __DPA_H */ |
| 3151 | --- /dev/null |
| 3152 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c |
| 3153 | @@ -0,0 +1,263 @@ |
| 3154 | +/* Copyright 2008-2013 Freescale Semiconductor, Inc. |
| 3155 | + * |
| 3156 | + * Redistribution and use in source and binary forms, with or without |
| 3157 | + * modification, are permitted provided that the following conditions are met: |
| 3158 | + * * Redistributions of source code must retain the above copyright |
| 3159 | + * notice, this list of conditions and the following disclaimer. |
| 3160 | + * * Redistributions in binary form must reproduce the above copyright |
| 3161 | + * notice, this list of conditions and the following disclaimer in the |
| 3162 | + * documentation and/or other materials provided with the distribution. |
| 3163 | + * * Neither the name of Freescale Semiconductor nor the |
| 3164 | + * names of its contributors may be used to endorse or promote products |
| 3165 | + * derived from this software without specific prior written permission. |
| 3166 | + * |
| 3167 | + * |
| 3168 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 3169 | + * GNU General Public License ("GPL") as published by the Free Software |
| 3170 | + * Foundation, either version 2 of that License or (at your option) any |
| 3171 | + * later version. |
| 3172 | + * |
| 3173 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 3174 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 3175 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 3176 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 3177 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 3178 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 3179 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 3180 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 3181 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 3182 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 3183 | + */ |
| 3184 | + |
| 3185 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 3186 | +#define pr_fmt(fmt) \ |
| 3187 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 3188 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 3189 | +#else |
| 3190 | +#define pr_fmt(fmt) \ |
| 3191 | + KBUILD_MODNAME ": " fmt |
| 3192 | +#endif |
| 3193 | + |
| 3194 | +#include <linux/init.h> |
| 3195 | +#include <linux/module.h> |
| 3196 | +#include <linux/io.h> |
| 3197 | +#include <linux/of_platform.h> |
| 3198 | +#include <linux/of_net.h> |
| 3199 | +#include <linux/etherdevice.h> |
| 3200 | +#include <linux/kthread.h> |
| 3201 | +#include <linux/percpu.h> |
| 3202 | +#include <linux/highmem.h> |
| 3203 | +#include <linux/sort.h> |
| 3204 | +#include <linux/fsl_qman.h> |
| 3205 | +#include "dpaa_eth.h" |
| 3206 | +#include "dpaa_eth_common.h" |
| 3207 | +#include "dpaa_eth_base.h" |
| 3208 | + |
| 3209 | +#define DPA_DESCRIPTION "FSL DPAA Advanced drivers:" |
| 3210 | + |
| 3211 | +MODULE_LICENSE("Dual BSD/GPL"); |
| 3212 | + |
| 3213 | +uint8_t advanced_debug = -1; |
| 3214 | +module_param(advanced_debug, byte, S_IRUGO); |
| 3215 | +MODULE_PARM_DESC(advanced_debug, "Module/Driver verbosity level"); |
| 3216 | +EXPORT_SYMBOL(advanced_debug); |
| 3217 | + |
| 3218 | +static int dpa_bp_cmp(const void *dpa_bp0, const void *dpa_bp1) |
| 3219 | +{ |
| 3220 | + return ((struct dpa_bp *)dpa_bp0)->size - |
| 3221 | + ((struct dpa_bp *)dpa_bp1)->size; |
| 3222 | +} |
| 3223 | + |
| 3224 | +struct dpa_bp * __cold __must_check /* __attribute__((nonnull)) */ |
| 3225 | +dpa_bp_probe(struct platform_device *_of_dev, size_t *count) |
| 3226 | +{ |
| 3227 | + int i, lenp, na, ns, err; |
| 3228 | + struct device *dev; |
| 3229 | + struct device_node *dev_node; |
| 3230 | + const __be32 *bpool_cfg; |
| 3231 | + struct dpa_bp *dpa_bp; |
| 3232 | + u32 bpid; |
| 3233 | + |
| 3234 | + dev = &_of_dev->dev; |
| 3235 | + |
| 3236 | + *count = of_count_phandle_with_args(dev->of_node, |
| 3237 | + "fsl,bman-buffer-pools", NULL); |
| 3238 | + if (*count < 1) { |
| 3239 | + dev_err(dev, "missing fsl,bman-buffer-pools device tree entry\n"); |
| 3240 | + return ERR_PTR(-EINVAL); |
| 3241 | + } |
| 3242 | + |
| 3243 | + dpa_bp = devm_kzalloc(dev, *count * sizeof(*dpa_bp), GFP_KERNEL); |
| 3244 | + if (dpa_bp == NULL) { |
| 3245 | + dev_err(dev, "devm_kzalloc() failed\n"); |
| 3246 | + return ERR_PTR(-ENOMEM); |
| 3247 | + } |
| 3248 | + |
| 3249 | + dev_node = of_find_node_by_path("/"); |
| 3250 | + if (unlikely(dev_node == NULL)) { |
| 3251 | + dev_err(dev, "of_find_node_by_path(/) failed\n"); |
| 3252 | + return ERR_PTR(-EINVAL); |
| 3253 | + } |
| 3254 | + |
| 3255 | + na = of_n_addr_cells(dev_node); |
| 3256 | + ns = of_n_size_cells(dev_node); |
| 3257 | + |
| 3258 | + for (i = 0; i < *count; i++) { |
| 3259 | + of_node_put(dev_node); |
| 3260 | + |
| 3261 | + dev_node = of_parse_phandle(dev->of_node, |
| 3262 | + "fsl,bman-buffer-pools", i); |
| 3263 | + if (dev_node == NULL) { |
| 3264 | + dev_err(dev, "of_find_node_by_phandle() failed\n"); |
| 3265 | + return ERR_PTR(-EFAULT); |
| 3266 | + } |
| 3267 | + |
| 3268 | + if (unlikely(!of_device_is_compatible(dev_node, "fsl,bpool"))) { |
| 3269 | + dev_err(dev, |
| 3270 | + "!of_device_is_compatible(%s, fsl,bpool)\n", |
| 3271 | + dev_node->full_name); |
| 3272 | + dpa_bp = ERR_PTR(-EINVAL); |
| 3273 | + goto _return_of_node_put; |
| 3274 | + } |
| 3275 | + |
| 3276 | + err = of_property_read_u32(dev_node, "fsl,bpid", &bpid); |
| 3277 | + if (err) { |
| 3278 | + dev_err(dev, "Cannot find buffer pool ID in the device tree\n"); |
| 3279 | + dpa_bp = ERR_PTR(-EINVAL); |
| 3280 | + goto _return_of_node_put; |
| 3281 | + } |
| 3282 | + dpa_bp[i].bpid = (uint8_t)bpid; |
| 3283 | + |
| 3284 | + bpool_cfg = of_get_property(dev_node, "fsl,bpool-ethernet-cfg", |
| 3285 | + &lenp); |
| 3286 | + if (bpool_cfg && (lenp == (2 * ns + na) * sizeof(*bpool_cfg))) { |
| 3287 | + const uint32_t *seed_pool; |
| 3288 | + |
| 3289 | + dpa_bp[i].config_count = |
| 3290 | + (int)of_read_number(bpool_cfg, ns); |
| 3291 | + dpa_bp[i].size = |
| 3292 | + (size_t)of_read_number(bpool_cfg + ns, ns); |
| 3293 | + dpa_bp[i].paddr = |
| 3294 | + of_read_number(bpool_cfg + 2 * ns, na); |
| 3295 | + |
| 3296 | + seed_pool = of_get_property(dev_node, |
| 3297 | + "fsl,bpool-ethernet-seeds", &lenp); |
| 3298 | + dpa_bp[i].seed_pool = !!seed_pool; |
| 3299 | + |
| 3300 | + } else { |
| 3301 | + dev_err(dev, |
| 3302 | + "Missing/invalid fsl,bpool-ethernet-cfg device tree entry for node %s\n", |
| 3303 | + dev_node->full_name); |
| 3304 | + dpa_bp = ERR_PTR(-EINVAL); |
| 3305 | + goto _return_of_node_put; |
| 3306 | + } |
| 3307 | + } |
| 3308 | + |
| 3309 | + sort(dpa_bp, *count, sizeof(*dpa_bp), dpa_bp_cmp, NULL); |
| 3310 | + |
| 3311 | + return dpa_bp; |
| 3312 | + |
| 3313 | +_return_of_node_put: |
| 3314 | + if (dev_node) |
| 3315 | + of_node_put(dev_node); |
| 3316 | + |
| 3317 | + return dpa_bp; |
| 3318 | +} |
| 3319 | +EXPORT_SYMBOL(dpa_bp_probe); |
| 3320 | + |
| 3321 | +int dpa_bp_shared_port_seed(struct dpa_bp *bp) |
| 3322 | +{ |
| 3323 | + void __iomem **ptr; |
| 3324 | + |
| 3325 | + /* In MAC-less and Shared-MAC scenarios the physical |
| 3326 | + * address of the buffer pool in device tree is set |
| 3327 | + * to 0 to specify that another entity (USDPAA) will |
| 3328 | + * allocate and seed the buffers |
| 3329 | + */ |
| 3330 | + if (!bp->paddr) |
| 3331 | + return 0; |
| 3332 | + |
| 3333 | + /* allocate memory region for buffers */ |
| 3334 | + devm_request_mem_region(bp->dev, bp->paddr, |
| 3335 | + bp->size * bp->config_count, KBUILD_MODNAME); |
| 3336 | + /* managed ioremap unmapping */ |
| 3337 | + ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); |
| 3338 | + if (!ptr) |
| 3339 | + return -EIO; |
| 3340 | +#ifndef CONFIG_PPC |
| 3341 | + bp->vaddr = ioremap_cache_ns(bp->paddr, bp->size * bp->config_count); |
| 3342 | +#else |
| 3343 | + bp->vaddr = ioremap_prot(bp->paddr, bp->size * bp->config_count, 0); |
| 3344 | +#endif |
| 3345 | + if (bp->vaddr == NULL) { |
| 3346 | + pr_err("Could not map memory for pool %d\n", bp->bpid); |
| 3347 | + devres_free(ptr); |
| 3348 | + return -EIO; |
| 3349 | + } |
| 3350 | + *ptr = bp->vaddr; |
| 3351 | + devres_add(bp->dev, ptr); |
| 3352 | + |
| 3353 | + /* seed pool with buffers from that memory region */ |
| 3354 | + if (bp->seed_pool) { |
| 3355 | + int count = bp->target_count; |
| 3356 | + dma_addr_t addr = bp->paddr; |
| 3357 | + |
| 3358 | + while (count) { |
| 3359 | + struct bm_buffer bufs[8]; |
| 3360 | + uint8_t num_bufs = 0; |
| 3361 | + |
| 3362 | + do { |
| 3363 | + BUG_ON(addr > 0xffffffffffffull); |
| 3364 | + bufs[num_bufs].bpid = bp->bpid; |
| 3365 | + bm_buffer_set64(&bufs[num_bufs++], addr); |
| 3366 | + addr += bp->size; |
| 3367 | + |
| 3368 | + } while (--count && (num_bufs < 8)); |
| 3369 | + |
| 3370 | + while (bman_release(bp->pool, bufs, num_bufs, 0)) |
| 3371 | + cpu_relax(); |
| 3372 | + } |
| 3373 | + } |
| 3374 | + |
| 3375 | + return 0; |
| 3376 | +} |
| 3377 | +EXPORT_SYMBOL(dpa_bp_shared_port_seed); |
| 3378 | + |
| 3379 | +int dpa_bp_create(struct net_device *net_dev, struct dpa_bp *dpa_bp, |
| 3380 | + size_t count) |
| 3381 | +{ |
| 3382 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 3383 | + int i; |
| 3384 | + |
| 3385 | + priv->dpa_bp = dpa_bp; |
| 3386 | + priv->bp_count = count; |
| 3387 | + |
| 3388 | + for (i = 0; i < count; i++) { |
| 3389 | + int err; |
| 3390 | + err = dpa_bp_alloc(&dpa_bp[i]); |
| 3391 | + if (err < 0) { |
| 3392 | + dpa_bp_free(priv); |
| 3393 | + priv->dpa_bp = NULL; |
| 3394 | + return err; |
| 3395 | + } |
| 3396 | + } |
| 3397 | + |
| 3398 | + return 0; |
| 3399 | +} |
| 3400 | +EXPORT_SYMBOL(dpa_bp_create); |
| 3401 | + |
| 3402 | +static int __init __cold dpa_advanced_load(void) |
| 3403 | +{ |
| 3404 | + pr_info(DPA_DESCRIPTION "\n"); |
| 3405 | + |
| 3406 | + return 0; |
| 3407 | +} |
| 3408 | +module_init(dpa_advanced_load); |
| 3409 | + |
| 3410 | +static void __exit __cold dpa_advanced_unload(void) |
| 3411 | +{ |
| 3412 | + pr_debug(KBUILD_MODNAME ": -> %s:%s()\n", |
| 3413 | + KBUILD_BASENAME".c", __func__); |
| 3414 | + |
| 3415 | +} |
| 3416 | +module_exit(dpa_advanced_unload); |
| 3417 | --- /dev/null |
| 3418 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h |
| 3419 | @@ -0,0 +1,50 @@ |
| 3420 | +/* Copyright 2008-2013 Freescale Semiconductor, Inc. |
| 3421 | + * |
| 3422 | + * Redistribution and use in source and binary forms, with or without |
| 3423 | + * modification, are permitted provided that the following conditions are met: |
| 3424 | + * * Redistributions of source code must retain the above copyright |
| 3425 | + * notice, this list of conditions and the following disclaimer. |
| 3426 | + * * Redistributions in binary form must reproduce the above copyright |
| 3427 | + * notice, this list of conditions and the following disclaimer in the |
| 3428 | + * documentation and/or other materials provided with the distribution. |
| 3429 | + * * Neither the name of Freescale Semiconductor nor the |
| 3430 | + * names of its contributors may be used to endorse or promote products |
| 3431 | + * derived from this software without specific prior written permission. |
| 3432 | + * |
| 3433 | + * |
| 3434 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 3435 | + * GNU General Public License ("GPL") as published by the Free Software |
| 3436 | + * Foundation, either version 2 of that License or (at your option) any |
| 3437 | + * later version. |
| 3438 | + * |
| 3439 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 3440 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 3441 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 3442 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 3443 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 3444 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 3445 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 3446 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 3447 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 3448 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 3449 | + */ |
| 3450 | + |
| 3451 | +#ifndef __DPAA_ETH_BASE_H |
| 3452 | +#define __DPAA_ETH_BASE_H |
| 3453 | + |
| 3454 | +#include <linux/etherdevice.h> /* struct net_device */ |
| 3455 | +#include <linux/fsl_bman.h> /* struct bm_buffer */ |
| 3456 | +#include <linux/of_platform.h> /* struct platform_device */ |
| 3457 | +#include <linux/net_tstamp.h> /* struct hwtstamp_config */ |
| 3458 | + |
| 3459 | +extern uint8_t advanced_debug; |
| 3460 | +extern const struct dpa_fq_cbs_t shared_fq_cbs; |
| 3461 | +extern int __hot dpa_shared_tx(struct sk_buff *skb, struct net_device *net_dev); |
| 3462 | + |
| 3463 | +struct dpa_bp * __cold __must_check /* __attribute__((nonnull)) */ |
| 3464 | +dpa_bp_probe(struct platform_device *_of_dev, size_t *count); |
| 3465 | +int dpa_bp_create(struct net_device *net_dev, struct dpa_bp *dpa_bp, |
| 3466 | + size_t count); |
| 3467 | +int dpa_bp_shared_port_seed(struct dpa_bp *bp); |
| 3468 | + |
| 3469 | +#endif /* __DPAA_ETH_BASE_H */ |
| 3470 | --- /dev/null |
| 3471 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c |
| 3472 | @@ -0,0 +1,1991 @@ |
| 3473 | +/* Copyright 2008-2016 Freescale Semiconductor Inc. |
| 3474 | + * |
| 3475 | + * Redistribution and use in source and binary forms, with or without |
| 3476 | + * modification, are permitted provided that the following conditions are met: |
| 3477 | + * * Redistributions of source code must retain the above copyright |
| 3478 | + * notice, this list of conditions and the following disclaimer. |
| 3479 | + * * Redistributions in binary form must reproduce the above copyright |
| 3480 | + * notice, this list of conditions and the following disclaimer in the |
| 3481 | + * documentation and/or other materials provided with the distribution. |
| 3482 | + * * Neither the name of Freescale Semiconductor nor the |
| 3483 | + * names of its contributors may be used to endorse or promote products |
| 3484 | + * derived from this software without specific prior written permission. |
| 3485 | + * |
| 3486 | + * |
| 3487 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 3488 | + * GNU General Public License ("GPL") as published by the Free Software |
| 3489 | + * Foundation, either version 2 of that License or (at your option) any |
| 3490 | + * later version. |
| 3491 | + * |
| 3492 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 3493 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 3494 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 3495 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 3496 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 3497 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 3498 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 3499 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 3500 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 3501 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 3502 | + */ |
| 3503 | + |
| 3504 | +#include <linux/init.h> |
| 3505 | +#include "dpaa_eth_ceetm.h" |
| 3506 | + |
| 3507 | +#define DPA_CEETM_DESCRIPTION "FSL DPAA CEETM qdisc" |
| 3508 | + |
| 3509 | +const struct nla_policy ceetm_policy[TCA_CEETM_MAX + 1] = { |
| 3510 | + [TCA_CEETM_COPT] = { .len = sizeof(struct tc_ceetm_copt) }, |
| 3511 | + [TCA_CEETM_QOPS] = { .len = sizeof(struct tc_ceetm_qopt) }, |
| 3512 | +}; |
| 3513 | + |
| 3514 | +struct Qdisc_ops ceetm_qdisc_ops; |
| 3515 | + |
| 3516 | +/* Obtain the DCP and the SP ids from the FMan port */ |
| 3517 | +static void get_dcp_and_sp(struct net_device *dev, enum qm_dc_portal *dcp_id, |
| 3518 | + unsigned int *sp_id) |
| 3519 | +{ |
| 3520 | + uint32_t channel; |
| 3521 | + t_LnxWrpFmPortDev *port_dev; |
| 3522 | + struct dpa_priv_s *dpa_priv = netdev_priv(dev); |
| 3523 | + struct mac_device *mac_dev = dpa_priv->mac_dev; |
| 3524 | + |
| 3525 | + port_dev = (t_LnxWrpFmPortDev *)mac_dev->port_dev[TX]; |
| 3526 | + channel = port_dev->txCh; |
| 3527 | + |
| 3528 | + *sp_id = channel & CHANNEL_SP_MASK; |
| 3529 | + pr_debug(KBUILD_BASENAME " : FM sub-portal ID %d\n", *sp_id); |
| 3530 | + |
| 3531 | + if (channel < DCP0_MAX_CHANNEL) { |
| 3532 | + *dcp_id = qm_dc_portal_fman0; |
| 3533 | + pr_debug(KBUILD_BASENAME " : DCP ID 0\n"); |
| 3534 | + } else { |
| 3535 | + *dcp_id = qm_dc_portal_fman1; |
| 3536 | + pr_debug(KBUILD_BASENAME " : DCP ID 1\n"); |
| 3537 | + } |
| 3538 | +} |
| 3539 | + |
| 3540 | +/* Enqueue Rejection Notification callback */ |
| 3541 | +static void ceetm_ern(struct qman_portal *portal, struct qman_fq *fq, |
| 3542 | + const struct qm_mr_entry *msg) |
| 3543 | +{ |
| 3544 | + struct net_device *net_dev; |
| 3545 | + struct ceetm_class *cls; |
| 3546 | + struct ceetm_class_stats *cstats = NULL; |
| 3547 | + const struct dpa_priv_s *dpa_priv; |
| 3548 | + struct dpa_percpu_priv_s *dpa_percpu_priv; |
| 3549 | + struct sk_buff *skb; |
| 3550 | + struct qm_fd fd = msg->ern.fd; |
| 3551 | + |
| 3552 | + net_dev = ((struct ceetm_fq *)fq)->net_dev; |
| 3553 | + dpa_priv = netdev_priv(net_dev); |
| 3554 | + dpa_percpu_priv = raw_cpu_ptr(dpa_priv->percpu_priv); |
| 3555 | + |
| 3556 | + /* Increment DPA counters */ |
| 3557 | + dpa_percpu_priv->stats.tx_dropped++; |
| 3558 | + dpa_percpu_priv->stats.tx_fifo_errors++; |
| 3559 | + |
| 3560 | + /* Increment CEETM counters */ |
| 3561 | + cls = ((struct ceetm_fq *)fq)->ceetm_cls; |
| 3562 | + switch (cls->type) { |
| 3563 | + case CEETM_PRIO: |
| 3564 | + cstats = this_cpu_ptr(cls->prio.cstats); |
| 3565 | + break; |
| 3566 | + case CEETM_WBFS: |
| 3567 | + cstats = this_cpu_ptr(cls->wbfs.cstats); |
| 3568 | + break; |
| 3569 | + } |
| 3570 | + |
| 3571 | + if (cstats) |
| 3572 | + cstats->ern_drop_count++; |
| 3573 | + |
| 3574 | + if (fd.bpid != 0xff) { |
| 3575 | + dpa_fd_release(net_dev, &fd); |
| 3576 | + return; |
| 3577 | + } |
| 3578 | + |
| 3579 | + skb = _dpa_cleanup_tx_fd(dpa_priv, &fd); |
| 3580 | + dev_kfree_skb_any(skb); |
| 3581 | +} |
| 3582 | + |
| 3583 | +/* Congestion State Change Notification callback */ |
| 3584 | +static void ceetm_cscn(struct qm_ceetm_ccg *ccg, void *cb_ctx, int congested) |
| 3585 | +{ |
| 3586 | + struct ceetm_fq *ceetm_fq = (struct ceetm_fq *)cb_ctx; |
| 3587 | + struct dpa_priv_s *dpa_priv = netdev_priv(ceetm_fq->net_dev); |
| 3588 | + struct ceetm_class *cls = ceetm_fq->ceetm_cls; |
| 3589 | + struct ceetm_class_stats *cstats = NULL; |
| 3590 | + |
| 3591 | + switch (cls->type) { |
| 3592 | + case CEETM_PRIO: |
| 3593 | + cstats = this_cpu_ptr(cls->prio.cstats); |
| 3594 | + break; |
| 3595 | + case CEETM_WBFS: |
| 3596 | + cstats = this_cpu_ptr(cls->wbfs.cstats); |
| 3597 | + break; |
| 3598 | + } |
| 3599 | + |
| 3600 | + if (congested) { |
| 3601 | + dpa_priv->cgr_data.congestion_start_jiffies = jiffies; |
| 3602 | + netif_tx_stop_all_queues(dpa_priv->net_dev); |
| 3603 | + dpa_priv->cgr_data.cgr_congested_count++; |
| 3604 | + if (cstats) |
| 3605 | + cstats->congested_count++; |
| 3606 | + } else { |
| 3607 | + dpa_priv->cgr_data.congested_jiffies += |
| 3608 | + (jiffies - dpa_priv->cgr_data.congestion_start_jiffies); |
| 3609 | + netif_tx_wake_all_queues(dpa_priv->net_dev); |
| 3610 | + } |
| 3611 | +} |
| 3612 | + |
| 3613 | +/* Allocate a ceetm fq */ |
| 3614 | +static int ceetm_alloc_fq(struct ceetm_fq **fq, struct net_device *dev, |
| 3615 | + struct ceetm_class *cls) |
| 3616 | +{ |
| 3617 | + *fq = kzalloc(sizeof(**fq), GFP_KERNEL); |
| 3618 | + if (!*fq) |
| 3619 | + return -ENOMEM; |
| 3620 | + |
| 3621 | + (*fq)->net_dev = dev; |
| 3622 | + (*fq)->ceetm_cls = cls; |
| 3623 | + return 0; |
| 3624 | +} |
| 3625 | + |
| 3626 | +/* Configure a ceetm Class Congestion Group */ |
| 3627 | +static int ceetm_config_ccg(struct qm_ceetm_ccg **ccg, |
| 3628 | + struct qm_ceetm_channel *channel, unsigned int id, |
| 3629 | + struct ceetm_fq *fq, struct dpa_priv_s *dpa_priv) |
| 3630 | +{ |
| 3631 | + int err; |
| 3632 | + u32 cs_th; |
| 3633 | + u16 ccg_mask; |
| 3634 | + struct qm_ceetm_ccg_params ccg_params; |
| 3635 | + |
| 3636 | + err = qman_ceetm_ccg_claim(ccg, channel, id, ceetm_cscn, fq); |
| 3637 | + if (err) |
| 3638 | + return err; |
| 3639 | + |
| 3640 | + /* Configure the count mode (frames/bytes), enable congestion state |
| 3641 | + * notifications, configure the congestion entry and exit thresholds, |
| 3642 | + * enable tail-drop, configure the tail-drop mode, and set the |
| 3643 | + * overhead accounting limit |
| 3644 | + */ |
| 3645 | + ccg_mask = QM_CCGR_WE_MODE | |
| 3646 | + QM_CCGR_WE_CSCN_EN | |
| 3647 | + QM_CCGR_WE_CS_THRES_IN | QM_CCGR_WE_CS_THRES_OUT | |
| 3648 | + QM_CCGR_WE_TD_EN | QM_CCGR_WE_TD_MODE | |
| 3649 | + QM_CCGR_WE_OAL; |
| 3650 | + |
| 3651 | + ccg_params.mode = 0; /* count bytes */ |
| 3652 | + ccg_params.cscn_en = 1; /* generate notifications */ |
| 3653 | + ccg_params.td_en = 1; /* enable tail-drop */ |
| 3654 | + ccg_params.td_mode = 0; /* tail-drop on congestion state */ |
| 3655 | + ccg_params.oal = (signed char)(min(sizeof(struct sk_buff) + |
| 3656 | + dpa_priv->tx_headroom, (size_t)FSL_QMAN_MAX_OAL)); |
| 3657 | + |
| 3658 | + /* Set the congestion state thresholds according to the link speed */ |
| 3659 | + if (dpa_priv->mac_dev->if_support & SUPPORTED_10000baseT_Full) |
| 3660 | + cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_10G; |
| 3661 | + else |
| 3662 | + cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_1G; |
| 3663 | + |
| 3664 | + qm_cgr_cs_thres_set64(&ccg_params.cs_thres_in, cs_th, 1); |
| 3665 | + qm_cgr_cs_thres_set64(&ccg_params.cs_thres_out, |
| 3666 | + cs_th * CEETM_CCGR_RATIO, 1); |
| 3667 | + |
| 3668 | + err = qman_ceetm_ccg_set(*ccg, ccg_mask, &ccg_params); |
| 3669 | + if (err) |
| 3670 | + return err; |
| 3671 | + |
| 3672 | + return 0; |
| 3673 | +} |
| 3674 | + |
| 3675 | +/* Configure a ceetm Logical Frame Queue */ |
| 3676 | +static int ceetm_config_lfq(struct qm_ceetm_cq *cq, struct ceetm_fq *fq, |
| 3677 | + struct qm_ceetm_lfq **lfq) |
| 3678 | +{ |
| 3679 | + int err; |
| 3680 | + u64 context_a; |
| 3681 | + u32 context_b; |
| 3682 | + |
| 3683 | + err = qman_ceetm_lfq_claim(lfq, cq); |
| 3684 | + if (err) |
| 3685 | + return err; |
| 3686 | + |
| 3687 | + /* Get the former contexts in order to preserve context B */ |
| 3688 | + err = qman_ceetm_lfq_get_context(*lfq, &context_a, &context_b); |
| 3689 | + if (err) |
| 3690 | + return err; |
| 3691 | + |
| 3692 | + context_a = CEETM_CONTEXT_A; |
| 3693 | + err = qman_ceetm_lfq_set_context(*lfq, context_a, context_b); |
| 3694 | + if (err) |
| 3695 | + return err; |
| 3696 | + |
| 3697 | + (*lfq)->ern = ceetm_ern; |
| 3698 | + |
| 3699 | + err = qman_ceetm_create_fq(*lfq, &fq->fq); |
| 3700 | + if (err) |
| 3701 | + return err; |
| 3702 | + |
| 3703 | + return 0; |
| 3704 | +} |
| 3705 | + |
| 3706 | +/* Configure a prio ceetm class */ |
| 3707 | +static int ceetm_config_prio_cls(struct ceetm_class *cls, |
| 3708 | + struct net_device *dev, |
| 3709 | + struct qm_ceetm_channel *channel, |
| 3710 | + unsigned int id) |
| 3711 | +{ |
| 3712 | + int err; |
| 3713 | + struct dpa_priv_s *dpa_priv = netdev_priv(dev); |
| 3714 | + |
| 3715 | + err = ceetm_alloc_fq(&cls->prio.fq, dev, cls); |
| 3716 | + if (err) |
| 3717 | + return err; |
| 3718 | + |
| 3719 | + /* Claim and configure the CCG */ |
| 3720 | + err = ceetm_config_ccg(&cls->prio.ccg, channel, id, cls->prio.fq, |
| 3721 | + dpa_priv); |
| 3722 | + if (err) |
| 3723 | + return err; |
| 3724 | + |
| 3725 | + /* Claim and configure the CQ */ |
| 3726 | + err = qman_ceetm_cq_claim(&cls->prio.cq, channel, id, cls->prio.ccg); |
| 3727 | + if (err) |
| 3728 | + return err; |
| 3729 | + |
| 3730 | + if (cls->shaped) { |
| 3731 | + err = qman_ceetm_channel_set_cq_cr_eligibility(channel, id, 1); |
| 3732 | + if (err) |
| 3733 | + return err; |
| 3734 | + |
| 3735 | + err = qman_ceetm_channel_set_cq_er_eligibility(channel, id, 1); |
| 3736 | + if (err) |
| 3737 | + return err; |
| 3738 | + } |
| 3739 | + |
| 3740 | + /* Claim and configure a LFQ */ |
| 3741 | + err = ceetm_config_lfq(cls->prio.cq, cls->prio.fq, &cls->prio.lfq); |
| 3742 | + if (err) |
| 3743 | + return err; |
| 3744 | + |
| 3745 | + return 0; |
| 3746 | +} |
| 3747 | + |
| 3748 | +/* Configure a wbfs ceetm class */ |
| 3749 | +static int ceetm_config_wbfs_cls(struct ceetm_class *cls, |
| 3750 | + struct net_device *dev, |
| 3751 | + struct qm_ceetm_channel *channel, |
| 3752 | + unsigned int id, int type) |
| 3753 | +{ |
| 3754 | + int err; |
| 3755 | + struct dpa_priv_s *dpa_priv = netdev_priv(dev); |
| 3756 | + |
| 3757 | + err = ceetm_alloc_fq(&cls->wbfs.fq, dev, cls); |
| 3758 | + if (err) |
| 3759 | + return err; |
| 3760 | + |
| 3761 | + /* Claim and configure the CCG */ |
| 3762 | + err = ceetm_config_ccg(&cls->wbfs.ccg, channel, id, cls->wbfs.fq, |
| 3763 | + dpa_priv); |
| 3764 | + if (err) |
| 3765 | + return err; |
| 3766 | + |
| 3767 | + /* Claim and configure the CQ */ |
| 3768 | + if (type == WBFS_GRP_B) |
| 3769 | + err = qman_ceetm_cq_claim_B(&cls->wbfs.cq, channel, id, |
| 3770 | + cls->wbfs.ccg); |
| 3771 | + else |
| 3772 | + err = qman_ceetm_cq_claim_A(&cls->wbfs.cq, channel, id, |
| 3773 | + cls->wbfs.ccg); |
| 3774 | + if (err) |
| 3775 | + return err; |
| 3776 | + |
| 3777 | + /* Configure the CQ weight: real number multiplied by 100 to get rid |
| 3778 | + * of the fraction |
| 3779 | + */ |
| 3780 | + err = qman_ceetm_set_queue_weight_in_ratio(cls->wbfs.cq, |
| 3781 | + cls->wbfs.weight * 100); |
| 3782 | + if (err) |
| 3783 | + return err; |
| 3784 | + |
| 3785 | + /* Claim and configure a LFQ */ |
| 3786 | + err = ceetm_config_lfq(cls->wbfs.cq, cls->wbfs.fq, &cls->wbfs.lfq); |
| 3787 | + if (err) |
| 3788 | + return err; |
| 3789 | + |
| 3790 | + return 0; |
| 3791 | +} |
| 3792 | + |
| 3793 | +/* Find class in qdisc hash table using given handle */ |
| 3794 | +static inline struct ceetm_class *ceetm_find(u32 handle, struct Qdisc *sch) |
| 3795 | +{ |
| 3796 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 3797 | + struct Qdisc_class_common *clc; |
| 3798 | + |
| 3799 | + pr_debug(KBUILD_BASENAME " : %s : find class %X in qdisc %X\n", |
| 3800 | + __func__, handle, sch->handle); |
| 3801 | + |
| 3802 | + clc = qdisc_class_find(&priv->clhash, handle); |
| 3803 | + return clc ? container_of(clc, struct ceetm_class, common) : NULL; |
| 3804 | +} |
| 3805 | + |
| 3806 | +/* Insert a class in the qdisc's class hash */ |
| 3807 | +static void ceetm_link_class(struct Qdisc *sch, |
| 3808 | + struct Qdisc_class_hash *clhash, |
| 3809 | + struct Qdisc_class_common *common) |
| 3810 | +{ |
| 3811 | + sch_tree_lock(sch); |
| 3812 | + qdisc_class_hash_insert(clhash, common); |
| 3813 | + sch_tree_unlock(sch); |
| 3814 | + qdisc_class_hash_grow(sch, clhash); |
| 3815 | +} |
| 3816 | + |
| 3817 | +/* Destroy a ceetm class */ |
| 3818 | +static void ceetm_cls_destroy(struct Qdisc *sch, struct ceetm_class *cl) |
| 3819 | +{ |
| 3820 | + if (!cl) |
| 3821 | + return; |
| 3822 | + |
| 3823 | + pr_debug(KBUILD_BASENAME " : %s : destroy class %X from under %X\n", |
| 3824 | + __func__, cl->common.classid, sch->handle); |
| 3825 | + |
| 3826 | + switch (cl->type) { |
| 3827 | + case CEETM_ROOT: |
| 3828 | + if (cl->root.child) { |
| 3829 | + qdisc_destroy(cl->root.child); |
| 3830 | + cl->root.child = NULL; |
| 3831 | + } |
| 3832 | + |
| 3833 | + if (cl->root.ch && qman_ceetm_channel_release(cl->root.ch)) |
| 3834 | + pr_err(KBUILD_BASENAME |
| 3835 | + " : %s : error releasing the channel %d\n", |
| 3836 | + __func__, cl->root.ch->idx); |
| 3837 | + |
| 3838 | + break; |
| 3839 | + |
| 3840 | + case CEETM_PRIO: |
| 3841 | + if (cl->prio.child) { |
| 3842 | + qdisc_destroy(cl->prio.child); |
| 3843 | + cl->prio.child = NULL; |
| 3844 | + } |
| 3845 | + |
| 3846 | + if (cl->prio.lfq && qman_ceetm_lfq_release(cl->prio.lfq)) |
| 3847 | + pr_err(KBUILD_BASENAME |
| 3848 | + " : %s : error releasing the LFQ %d\n", |
| 3849 | + __func__, cl->prio.lfq->idx); |
| 3850 | + |
| 3851 | + if (cl->prio.cq && qman_ceetm_cq_release(cl->prio.cq)) |
| 3852 | + pr_err(KBUILD_BASENAME |
| 3853 | + " : %s : error releasing the CQ %d\n", |
| 3854 | + __func__, cl->prio.cq->idx); |
| 3855 | + |
| 3856 | + if (cl->prio.ccg && qman_ceetm_ccg_release(cl->prio.ccg)) |
| 3857 | + pr_err(KBUILD_BASENAME |
| 3858 | + " : %s : error releasing the CCG %d\n", |
| 3859 | + __func__, cl->prio.ccg->idx); |
| 3860 | + |
| 3861 | + kfree(cl->prio.fq); |
| 3862 | + |
| 3863 | + if (cl->prio.cstats) |
| 3864 | + free_percpu(cl->prio.cstats); |
| 3865 | + |
| 3866 | + break; |
| 3867 | + |
| 3868 | + case CEETM_WBFS: |
| 3869 | + if (cl->wbfs.lfq && qman_ceetm_lfq_release(cl->wbfs.lfq)) |
| 3870 | + pr_err(KBUILD_BASENAME |
| 3871 | + " : %s : error releasing the LFQ %d\n", |
| 3872 | + __func__, cl->wbfs.lfq->idx); |
| 3873 | + |
| 3874 | + if (cl->wbfs.cq && qman_ceetm_cq_release(cl->wbfs.cq)) |
| 3875 | + pr_err(KBUILD_BASENAME |
| 3876 | + " : %s : error releasing the CQ %d\n", |
| 3877 | + __func__, cl->wbfs.cq->idx); |
| 3878 | + |
| 3879 | + if (cl->wbfs.ccg && qman_ceetm_ccg_release(cl->wbfs.ccg)) |
| 3880 | + pr_err(KBUILD_BASENAME |
| 3881 | + " : %s : error releasing the CCG %d\n", |
| 3882 | + __func__, cl->wbfs.ccg->idx); |
| 3883 | + |
| 3884 | + kfree(cl->wbfs.fq); |
| 3885 | + |
| 3886 | + if (cl->wbfs.cstats) |
| 3887 | + free_percpu(cl->wbfs.cstats); |
| 3888 | + } |
| 3889 | + |
| 3890 | + tcf_destroy_chain(&cl->filter_list); |
| 3891 | + kfree(cl); |
| 3892 | +} |
| 3893 | + |
| 3894 | +/* Destroy a ceetm qdisc */ |
| 3895 | +static void ceetm_destroy(struct Qdisc *sch) |
| 3896 | +{ |
| 3897 | + unsigned int ntx, i; |
| 3898 | + struct hlist_node *next; |
| 3899 | + struct ceetm_class *cl; |
| 3900 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 3901 | + struct net_device *dev = qdisc_dev(sch); |
| 3902 | + |
| 3903 | + pr_debug(KBUILD_BASENAME " : %s : destroy qdisc %X\n", |
| 3904 | + __func__, sch->handle); |
| 3905 | + |
| 3906 | + /* All filters need to be removed before destroying the classes */ |
| 3907 | + tcf_destroy_chain(&priv->filter_list); |
| 3908 | + |
| 3909 | + for (i = 0; i < priv->clhash.hashsize; i++) { |
| 3910 | + hlist_for_each_entry(cl, &priv->clhash.hash[i], common.hnode) |
| 3911 | + tcf_destroy_chain(&cl->filter_list); |
| 3912 | + } |
| 3913 | + |
| 3914 | + for (i = 0; i < priv->clhash.hashsize; i++) { |
| 3915 | + hlist_for_each_entry_safe(cl, next, &priv->clhash.hash[i], |
| 3916 | + common.hnode) |
| 3917 | + ceetm_cls_destroy(sch, cl); |
| 3918 | + } |
| 3919 | + |
| 3920 | + qdisc_class_hash_destroy(&priv->clhash); |
| 3921 | + |
| 3922 | + switch (priv->type) { |
| 3923 | + case CEETM_ROOT: |
| 3924 | + dpa_disable_ceetm(dev); |
| 3925 | + |
| 3926 | + if (priv->root.lni && qman_ceetm_lni_release(priv->root.lni)) |
| 3927 | + pr_err(KBUILD_BASENAME |
| 3928 | + " : %s : error releasing the LNI %d\n", |
| 3929 | + __func__, priv->root.lni->idx); |
| 3930 | + |
| 3931 | + if (priv->root.sp && qman_ceetm_sp_release(priv->root.sp)) |
| 3932 | + pr_err(KBUILD_BASENAME |
| 3933 | + " : %s : error releasing the SP %d\n", |
| 3934 | + __func__, priv->root.sp->idx); |
| 3935 | + |
| 3936 | + if (priv->root.qstats) |
| 3937 | + free_percpu(priv->root.qstats); |
| 3938 | + |
| 3939 | + if (!priv->root.qdiscs) |
| 3940 | + break; |
| 3941 | + |
| 3942 | + /* Remove the pfifo qdiscs */ |
| 3943 | + for (ntx = 0; ntx < dev->num_tx_queues; ntx++) |
| 3944 | + if (priv->root.qdiscs[ntx]) |
| 3945 | + qdisc_destroy(priv->root.qdiscs[ntx]); |
| 3946 | + |
| 3947 | + kfree(priv->root.qdiscs); |
| 3948 | + break; |
| 3949 | + |
| 3950 | + case CEETM_PRIO: |
| 3951 | + if (priv->prio.parent) |
| 3952 | + priv->prio.parent->root.child = NULL; |
| 3953 | + break; |
| 3954 | + |
| 3955 | + case CEETM_WBFS: |
| 3956 | + if (priv->wbfs.parent) |
| 3957 | + priv->wbfs.parent->prio.child = NULL; |
| 3958 | + break; |
| 3959 | + } |
| 3960 | +} |
| 3961 | + |
| 3962 | +static int ceetm_dump(struct Qdisc *sch, struct sk_buff *skb) |
| 3963 | +{ |
| 3964 | + struct Qdisc *qdisc; |
| 3965 | + unsigned int ntx, i; |
| 3966 | + struct nlattr *nest; |
| 3967 | + struct tc_ceetm_qopt qopt; |
| 3968 | + struct ceetm_qdisc_stats *qstats; |
| 3969 | + struct net_device *dev = qdisc_dev(sch); |
| 3970 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 3971 | + |
| 3972 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 3973 | + |
| 3974 | + sch_tree_lock(sch); |
| 3975 | + memset(&qopt, 0, sizeof(qopt)); |
| 3976 | + qopt.type = priv->type; |
| 3977 | + qopt.shaped = priv->shaped; |
| 3978 | + |
| 3979 | + switch (priv->type) { |
| 3980 | + case CEETM_ROOT: |
| 3981 | + /* Gather statistics from the underlying pfifo qdiscs */ |
| 3982 | + sch->q.qlen = 0; |
| 3983 | + memset(&sch->bstats, 0, sizeof(sch->bstats)); |
| 3984 | + memset(&sch->qstats, 0, sizeof(sch->qstats)); |
| 3985 | + |
| 3986 | + for (ntx = 0; ntx < dev->num_tx_queues; ntx++) { |
| 3987 | + qdisc = netdev_get_tx_queue(dev, ntx)->qdisc_sleeping; |
| 3988 | + sch->q.qlen += qdisc->q.qlen; |
| 3989 | + sch->bstats.bytes += qdisc->bstats.bytes; |
| 3990 | + sch->bstats.packets += qdisc->bstats.packets; |
| 3991 | + sch->qstats.qlen += qdisc->qstats.qlen; |
| 3992 | + sch->qstats.backlog += qdisc->qstats.backlog; |
| 3993 | + sch->qstats.drops += qdisc->qstats.drops; |
| 3994 | + sch->qstats.requeues += qdisc->qstats.requeues; |
| 3995 | + sch->qstats.overlimits += qdisc->qstats.overlimits; |
| 3996 | + } |
| 3997 | + |
| 3998 | + for_each_online_cpu(i) { |
| 3999 | + qstats = per_cpu_ptr(priv->root.qstats, i); |
| 4000 | + sch->qstats.drops += qstats->drops; |
| 4001 | + } |
| 4002 | + |
| 4003 | + qopt.rate = priv->root.rate; |
| 4004 | + qopt.ceil = priv->root.ceil; |
| 4005 | + qopt.overhead = priv->root.overhead; |
| 4006 | + break; |
| 4007 | + |
| 4008 | + case CEETM_PRIO: |
| 4009 | + qopt.qcount = priv->prio.qcount; |
| 4010 | + break; |
| 4011 | + |
| 4012 | + case CEETM_WBFS: |
| 4013 | + qopt.qcount = priv->wbfs.qcount; |
| 4014 | + qopt.cr = priv->wbfs.cr; |
| 4015 | + qopt.er = priv->wbfs.er; |
| 4016 | + break; |
| 4017 | + |
| 4018 | + default: |
| 4019 | + pr_err(KBUILD_BASENAME " : %s : invalid qdisc\n", __func__); |
| 4020 | + sch_tree_unlock(sch); |
| 4021 | + return -EINVAL; |
| 4022 | + } |
| 4023 | + |
| 4024 | + nest = nla_nest_start(skb, TCA_OPTIONS); |
| 4025 | + if (!nest) |
| 4026 | + goto nla_put_failure; |
| 4027 | + if (nla_put(skb, TCA_CEETM_QOPS, sizeof(qopt), &qopt)) |
| 4028 | + goto nla_put_failure; |
| 4029 | + nla_nest_end(skb, nest); |
| 4030 | + |
| 4031 | + sch_tree_unlock(sch); |
| 4032 | + return skb->len; |
| 4033 | + |
| 4034 | +nla_put_failure: |
| 4035 | + sch_tree_unlock(sch); |
| 4036 | + nla_nest_cancel(skb, nest); |
| 4037 | + return -EMSGSIZE; |
| 4038 | +} |
| 4039 | + |
| 4040 | +/* Configure a root ceetm qdisc */ |
| 4041 | +static int ceetm_init_root(struct Qdisc *sch, struct ceetm_qdisc *priv, |
| 4042 | + struct tc_ceetm_qopt *qopt) |
| 4043 | +{ |
| 4044 | + struct netdev_queue *dev_queue; |
| 4045 | + struct Qdisc *qdisc; |
| 4046 | + enum qm_dc_portal dcp_id; |
| 4047 | + unsigned int i, sp_id, parent_id; |
| 4048 | + int err; |
| 4049 | + u64 bps; |
| 4050 | + struct qm_ceetm_sp *sp; |
| 4051 | + struct qm_ceetm_lni *lni; |
| 4052 | + struct net_device *dev = qdisc_dev(sch); |
| 4053 | + struct dpa_priv_s *dpa_priv = netdev_priv(dev); |
| 4054 | + struct mac_device *mac_dev = dpa_priv->mac_dev; |
| 4055 | + |
| 4056 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4057 | + |
| 4058 | + /* Validate inputs */ |
| 4059 | + if (sch->parent != TC_H_ROOT) { |
| 4060 | + pr_err("CEETM: a root ceetm qdisc can not be attached to a class\n"); |
| 4061 | + tcf_destroy_chain(&priv->filter_list); |
| 4062 | + qdisc_class_hash_destroy(&priv->clhash); |
| 4063 | + return -EINVAL; |
| 4064 | + } |
| 4065 | + |
| 4066 | + if (!mac_dev) { |
| 4067 | + pr_err("CEETM: the interface is lacking a mac\n"); |
| 4068 | + err = -EINVAL; |
| 4069 | + goto err_init_root; |
| 4070 | + } |
| 4071 | + |
| 4072 | + /* pre-allocate underlying pfifo qdiscs */ |
| 4073 | + priv->root.qdiscs = kcalloc(dev->num_tx_queues, |
| 4074 | + sizeof(priv->root.qdiscs[0]), |
| 4075 | + GFP_KERNEL); |
| 4076 | + if (!priv->root.qdiscs) { |
| 4077 | + err = -ENOMEM; |
| 4078 | + goto err_init_root; |
| 4079 | + } |
| 4080 | + |
| 4081 | + for (i = 0; i < dev->num_tx_queues; i++) { |
| 4082 | + dev_queue = netdev_get_tx_queue(dev, i); |
| 4083 | + parent_id = TC_H_MAKE(TC_H_MAJ(sch->handle), |
| 4084 | + TC_H_MIN(i + PFIFO_MIN_OFFSET)); |
| 4085 | + |
| 4086 | + qdisc = qdisc_create_dflt(dev_queue, &pfifo_qdisc_ops, |
| 4087 | + parent_id); |
| 4088 | + if (!qdisc) { |
| 4089 | + err = -ENOMEM; |
| 4090 | + goto err_init_root; |
| 4091 | + } |
| 4092 | + |
| 4093 | + priv->root.qdiscs[i] = qdisc; |
| 4094 | + qdisc->flags |= TCQ_F_ONETXQUEUE; |
| 4095 | + } |
| 4096 | + |
| 4097 | + sch->flags |= TCQ_F_MQROOT; |
| 4098 | + |
| 4099 | + priv->root.qstats = alloc_percpu(struct ceetm_qdisc_stats); |
| 4100 | + if (!priv->root.qstats) { |
| 4101 | + pr_err(KBUILD_BASENAME " : %s : alloc_percpu() failed\n", |
| 4102 | + __func__); |
| 4103 | + err = -ENOMEM; |
| 4104 | + goto err_init_root; |
| 4105 | + } |
| 4106 | + |
| 4107 | + priv->shaped = qopt->shaped; |
| 4108 | + priv->root.rate = qopt->rate; |
| 4109 | + priv->root.ceil = qopt->ceil; |
| 4110 | + priv->root.overhead = qopt->overhead; |
| 4111 | + |
| 4112 | + /* Claim the SP */ |
| 4113 | + get_dcp_and_sp(dev, &dcp_id, &sp_id); |
| 4114 | + err = qman_ceetm_sp_claim(&sp, dcp_id, sp_id); |
| 4115 | + if (err) { |
| 4116 | + pr_err(KBUILD_BASENAME " : %s : failed to claim the SP\n", |
| 4117 | + __func__); |
| 4118 | + goto err_init_root; |
| 4119 | + } |
| 4120 | + |
| 4121 | + priv->root.sp = sp; |
| 4122 | + |
| 4123 | + /* Claim the LNI - will use the same id as the SP id since SPs 0-7 |
| 4124 | + * are connected to the TX FMan ports |
| 4125 | + */ |
| 4126 | + err = qman_ceetm_lni_claim(&lni, dcp_id, sp_id); |
| 4127 | + if (err) { |
| 4128 | + pr_err(KBUILD_BASENAME " : %s : failed to claim the LNI\n", |
| 4129 | + __func__); |
| 4130 | + goto err_init_root; |
| 4131 | + } |
| 4132 | + |
| 4133 | + priv->root.lni = lni; |
| 4134 | + |
| 4135 | + err = qman_ceetm_sp_set_lni(sp, lni); |
| 4136 | + if (err) { |
| 4137 | + pr_err(KBUILD_BASENAME " : %s : failed to link the SP and LNI\n", |
| 4138 | + __func__); |
| 4139 | + goto err_init_root; |
| 4140 | + } |
| 4141 | + |
| 4142 | + lni->sp = sp; |
| 4143 | + |
| 4144 | + /* Configure the LNI shaper */ |
| 4145 | + if (priv->shaped) { |
| 4146 | + err = qman_ceetm_lni_enable_shaper(lni, 1, priv->root.overhead); |
| 4147 | + if (err) { |
| 4148 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the LNI shaper\n", |
| 4149 | + __func__); |
| 4150 | + goto err_init_root; |
| 4151 | + } |
| 4152 | + |
| 4153 | + bps = priv->root.rate << 3; /* Bps -> bps */ |
| 4154 | + err = qman_ceetm_lni_set_commit_rate_bps(lni, bps, dev->mtu); |
| 4155 | + if (err) { |
| 4156 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the LNI shaper\n", |
| 4157 | + __func__); |
| 4158 | + goto err_init_root; |
| 4159 | + } |
| 4160 | + |
| 4161 | + bps = priv->root.ceil << 3; /* Bps -> bps */ |
| 4162 | + err = qman_ceetm_lni_set_excess_rate_bps(lni, bps, dev->mtu); |
| 4163 | + if (err) { |
| 4164 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the LNI shaper\n", |
| 4165 | + __func__); |
| 4166 | + goto err_init_root; |
| 4167 | + } |
| 4168 | + } |
| 4169 | + |
| 4170 | + /* TODO default configuration */ |
| 4171 | + |
| 4172 | + dpa_enable_ceetm(dev); |
| 4173 | + return 0; |
| 4174 | + |
| 4175 | +err_init_root: |
| 4176 | + ceetm_destroy(sch); |
| 4177 | + return err; |
| 4178 | +} |
| 4179 | + |
| 4180 | +/* Configure a prio ceetm qdisc */ |
| 4181 | +static int ceetm_init_prio(struct Qdisc *sch, struct ceetm_qdisc *priv, |
| 4182 | + struct tc_ceetm_qopt *qopt) |
| 4183 | +{ |
| 4184 | + int err; |
| 4185 | + unsigned int i; |
| 4186 | + struct ceetm_class *parent_cl, *child_cl; |
| 4187 | + struct Qdisc *parent_qdisc; |
| 4188 | + struct net_device *dev = qdisc_dev(sch); |
| 4189 | + |
| 4190 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4191 | + |
| 4192 | + if (sch->parent == TC_H_ROOT) { |
| 4193 | + pr_err("CEETM: a prio ceetm qdisc can not be root\n"); |
| 4194 | + err = -EINVAL; |
| 4195 | + goto err_init_prio; |
| 4196 | + } |
| 4197 | + |
| 4198 | + parent_qdisc = qdisc_lookup(dev, TC_H_MAJ(sch->parent)); |
| 4199 | + if (strcmp(parent_qdisc->ops->id, ceetm_qdisc_ops.id)) { |
| 4200 | + pr_err("CEETM: a ceetm qdisc can not be attached to other qdisc/class types\n"); |
| 4201 | + err = -EINVAL; |
| 4202 | + goto err_init_prio; |
| 4203 | + } |
| 4204 | + |
| 4205 | + /* Obtain the parent root ceetm_class */ |
| 4206 | + parent_cl = ceetm_find(sch->parent, parent_qdisc); |
| 4207 | + |
| 4208 | + if (!parent_cl || parent_cl->type != CEETM_ROOT) { |
| 4209 | + pr_err("CEETM: a prio ceetm qdiscs can be added only under a root ceetm class\n"); |
| 4210 | + err = -EINVAL; |
| 4211 | + goto err_init_prio; |
| 4212 | + } |
| 4213 | + |
| 4214 | + priv->prio.parent = parent_cl; |
| 4215 | + parent_cl->root.child = sch; |
| 4216 | + |
| 4217 | + priv->shaped = parent_cl->shaped; |
| 4218 | + priv->prio.qcount = qopt->qcount; |
| 4219 | + |
| 4220 | + /* Create and configure qcount child classes */ |
| 4221 | + for (i = 0; i < priv->prio.qcount; i++) { |
| 4222 | + child_cl = kzalloc(sizeof(*child_cl), GFP_KERNEL); |
| 4223 | + if (!child_cl) { |
| 4224 | + pr_err(KBUILD_BASENAME " : %s : kzalloc() failed\n", |
| 4225 | + __func__); |
| 4226 | + err = -ENOMEM; |
| 4227 | + goto err_init_prio; |
| 4228 | + } |
| 4229 | + |
| 4230 | + child_cl->prio.cstats = alloc_percpu(struct ceetm_class_stats); |
| 4231 | + if (!child_cl->prio.cstats) { |
| 4232 | + pr_err(KBUILD_BASENAME " : %s : alloc_percpu() failed\n", |
| 4233 | + __func__); |
| 4234 | + err = -ENOMEM; |
| 4235 | + goto err_init_prio_cls; |
| 4236 | + } |
| 4237 | + |
| 4238 | + child_cl->common.classid = TC_H_MAKE(sch->handle, (i + 1)); |
| 4239 | + child_cl->refcnt = 1; |
| 4240 | + child_cl->parent = sch; |
| 4241 | + child_cl->type = CEETM_PRIO; |
| 4242 | + child_cl->shaped = priv->shaped; |
| 4243 | + child_cl->prio.child = NULL; |
| 4244 | + |
| 4245 | + /* All shaped CQs have CR and ER enabled by default */ |
| 4246 | + child_cl->prio.cr = child_cl->shaped; |
| 4247 | + child_cl->prio.er = child_cl->shaped; |
| 4248 | + child_cl->prio.fq = NULL; |
| 4249 | + child_cl->prio.cq = NULL; |
| 4250 | + |
| 4251 | + /* Configure the corresponding hardware CQ */ |
| 4252 | + err = ceetm_config_prio_cls(child_cl, dev, |
| 4253 | + parent_cl->root.ch, i); |
| 4254 | + if (err) { |
| 4255 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the ceetm prio class %X\n", |
| 4256 | + __func__, child_cl->common.classid); |
| 4257 | + goto err_init_prio_cls; |
| 4258 | + } |
| 4259 | + |
| 4260 | + /* Add class handle in Qdisc */ |
| 4261 | + ceetm_link_class(sch, &priv->clhash, &child_cl->common); |
| 4262 | + pr_debug(KBUILD_BASENAME " : %s : added ceetm prio class %X associated with CQ %d and CCG %d\n", |
| 4263 | + __func__, child_cl->common.classid, |
| 4264 | + child_cl->prio.cq->idx, child_cl->prio.ccg->idx); |
| 4265 | + } |
| 4266 | + |
| 4267 | + return 0; |
| 4268 | + |
| 4269 | +err_init_prio_cls: |
| 4270 | + ceetm_cls_destroy(sch, child_cl); |
| 4271 | +err_init_prio: |
| 4272 | + ceetm_destroy(sch); |
| 4273 | + return err; |
| 4274 | +} |
| 4275 | + |
| 4276 | +/* Configure a wbfs ceetm qdisc */ |
| 4277 | +static int ceetm_init_wbfs(struct Qdisc *sch, struct ceetm_qdisc *priv, |
| 4278 | + struct tc_ceetm_qopt *qopt) |
| 4279 | +{ |
| 4280 | + int err, group_b, small_group; |
| 4281 | + unsigned int i, id, prio_a, prio_b; |
| 4282 | + struct ceetm_class *parent_cl, *child_cl, *root_cl; |
| 4283 | + struct Qdisc *parent_qdisc; |
| 4284 | + struct ceetm_qdisc *parent_priv; |
| 4285 | + struct qm_ceetm_channel *channel; |
| 4286 | + struct net_device *dev = qdisc_dev(sch); |
| 4287 | + |
| 4288 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4289 | + |
| 4290 | + /* Validate inputs */ |
| 4291 | + if (sch->parent == TC_H_ROOT) { |
| 4292 | + pr_err("CEETM: a wbfs ceetm qdiscs can not be root\n"); |
| 4293 | + err = -EINVAL; |
| 4294 | + goto err_init_wbfs; |
| 4295 | + } |
| 4296 | + |
| 4297 | + /* Obtain the parent prio ceetm qdisc */ |
| 4298 | + parent_qdisc = qdisc_lookup(dev, TC_H_MAJ(sch->parent)); |
| 4299 | + if (strcmp(parent_qdisc->ops->id, ceetm_qdisc_ops.id)) { |
| 4300 | + pr_err("CEETM: a ceetm qdisc can not be attached to other qdisc/class types\n"); |
| 4301 | + err = -EINVAL; |
| 4302 | + goto err_init_wbfs; |
| 4303 | + } |
| 4304 | + |
| 4305 | + /* Obtain the parent prio ceetm class */ |
| 4306 | + parent_cl = ceetm_find(sch->parent, parent_qdisc); |
| 4307 | + parent_priv = qdisc_priv(parent_qdisc); |
| 4308 | + |
| 4309 | + if (!parent_cl || parent_cl->type != CEETM_PRIO) { |
| 4310 | + pr_err("CEETM: a wbfs ceetm qdiscs can be added only under a prio ceetm class\n"); |
| 4311 | + err = -EINVAL; |
| 4312 | + goto err_init_wbfs; |
| 4313 | + } |
| 4314 | + |
| 4315 | + if (!qopt->qcount || !qopt->qweight[0]) { |
| 4316 | + pr_err("CEETM: qcount and qweight are mandatory for a wbfs ceetm qdisc\n"); |
| 4317 | + err = -EINVAL; |
| 4318 | + goto err_init_wbfs; |
| 4319 | + } |
| 4320 | + |
| 4321 | + priv->shaped = parent_cl->shaped; |
| 4322 | + |
| 4323 | + if (!priv->shaped && (qopt->cr || qopt->er)) { |
| 4324 | + pr_err("CEETM: CR/ER can be enabled only for shaped wbfs ceetm qdiscs\n"); |
| 4325 | + err = -EINVAL; |
| 4326 | + goto err_init_wbfs; |
| 4327 | + } |
| 4328 | + |
| 4329 | + if (priv->shaped && !(qopt->cr || qopt->er)) { |
| 4330 | + pr_err("CEETM: either CR or ER must be enabled for shaped wbfs ceetm qdiscs\n"); |
| 4331 | + err = -EINVAL; |
| 4332 | + goto err_init_wbfs; |
| 4333 | + } |
| 4334 | + |
| 4335 | + /* Obtain the parent root ceetm class */ |
| 4336 | + root_cl = parent_priv->prio.parent; |
| 4337 | + if ((root_cl->root.wbfs_grp_a && root_cl->root.wbfs_grp_b) || |
| 4338 | + root_cl->root.wbfs_grp_large) { |
| 4339 | + pr_err("CEETM: no more wbfs classes are available\n"); |
| 4340 | + err = -EINVAL; |
| 4341 | + goto err_init_wbfs; |
| 4342 | + } |
| 4343 | + |
| 4344 | + if ((root_cl->root.wbfs_grp_a || root_cl->root.wbfs_grp_b) && |
| 4345 | + qopt->qcount == CEETM_MAX_WBFS_QCOUNT) { |
| 4346 | + pr_err("CEETM: only %d wbfs classes are available\n", |
| 4347 | + CEETM_MIN_WBFS_QCOUNT); |
| 4348 | + err = -EINVAL; |
| 4349 | + goto err_init_wbfs; |
| 4350 | + } |
| 4351 | + |
| 4352 | + priv->wbfs.parent = parent_cl; |
| 4353 | + parent_cl->prio.child = sch; |
| 4354 | + |
| 4355 | + priv->wbfs.qcount = qopt->qcount; |
| 4356 | + priv->wbfs.cr = qopt->cr; |
| 4357 | + priv->wbfs.er = qopt->er; |
| 4358 | + |
| 4359 | + channel = root_cl->root.ch; |
| 4360 | + |
| 4361 | + /* Configure the hardware wbfs channel groups */ |
| 4362 | + if (priv->wbfs.qcount == CEETM_MAX_WBFS_QCOUNT) { |
| 4363 | + /* Configure the large group A */ |
| 4364 | + priv->wbfs.group_type = WBFS_GRP_LARGE; |
| 4365 | + small_group = false; |
| 4366 | + group_b = false; |
| 4367 | + prio_a = TC_H_MIN(parent_cl->common.classid) - 1; |
| 4368 | + prio_b = prio_a; |
| 4369 | + |
| 4370 | + } else if (root_cl->root.wbfs_grp_a) { |
| 4371 | + /* Configure the group B */ |
| 4372 | + priv->wbfs.group_type = WBFS_GRP_B; |
| 4373 | + |
| 4374 | + err = qman_ceetm_channel_get_group(channel, &small_group, |
| 4375 | + &prio_a, &prio_b); |
| 4376 | + if (err) { |
| 4377 | + pr_err(KBUILD_BASENAME " : %s : failed to get group details\n", |
| 4378 | + __func__); |
| 4379 | + goto err_init_wbfs; |
| 4380 | + } |
| 4381 | + |
| 4382 | + small_group = true; |
| 4383 | + group_b = true; |
| 4384 | + prio_b = TC_H_MIN(parent_cl->common.classid) - 1; |
| 4385 | + /* If group A isn't configured, configure it as group B */ |
| 4386 | + prio_a = prio_a ? : prio_b; |
| 4387 | + |
| 4388 | + } else { |
| 4389 | + /* Configure the small group A */ |
| 4390 | + priv->wbfs.group_type = WBFS_GRP_A; |
| 4391 | + |
| 4392 | + err = qman_ceetm_channel_get_group(channel, &small_group, |
| 4393 | + &prio_a, &prio_b); |
| 4394 | + if (err) { |
| 4395 | + pr_err(KBUILD_BASENAME " : %s : failed to get group details\n", |
| 4396 | + __func__); |
| 4397 | + goto err_init_wbfs; |
| 4398 | + } |
| 4399 | + |
| 4400 | + small_group = true; |
| 4401 | + group_b = false; |
| 4402 | + prio_a = TC_H_MIN(parent_cl->common.classid) - 1; |
| 4403 | + /* If group B isn't configured, configure it as group A */ |
| 4404 | + prio_b = prio_b ? : prio_a; |
| 4405 | + } |
| 4406 | + |
| 4407 | + err = qman_ceetm_channel_set_group(channel, small_group, prio_a, |
| 4408 | + prio_b); |
| 4409 | + if (err) |
| 4410 | + goto err_init_wbfs; |
| 4411 | + |
| 4412 | + if (priv->shaped) { |
| 4413 | + err = qman_ceetm_channel_set_group_cr_eligibility(channel, |
| 4414 | + group_b, |
| 4415 | + priv->wbfs.cr); |
| 4416 | + if (err) { |
| 4417 | + pr_err(KBUILD_BASENAME " : %s : failed to set group CR eligibility\n", |
| 4418 | + __func__); |
| 4419 | + goto err_init_wbfs; |
| 4420 | + } |
| 4421 | + |
| 4422 | + err = qman_ceetm_channel_set_group_er_eligibility(channel, |
| 4423 | + group_b, |
| 4424 | + priv->wbfs.er); |
| 4425 | + if (err) { |
| 4426 | + pr_err(KBUILD_BASENAME " : %s : failed to set group ER eligibility\n", |
| 4427 | + __func__); |
| 4428 | + goto err_init_wbfs; |
| 4429 | + } |
| 4430 | + } |
| 4431 | + |
| 4432 | + /* Create qcount child classes */ |
| 4433 | + for (i = 0; i < priv->wbfs.qcount; i++) { |
| 4434 | + child_cl = kzalloc(sizeof(*child_cl), GFP_KERNEL); |
| 4435 | + if (!child_cl) { |
| 4436 | + pr_err(KBUILD_BASENAME " : %s : kzalloc() failed\n", |
| 4437 | + __func__); |
| 4438 | + err = -ENOMEM; |
| 4439 | + goto err_init_wbfs; |
| 4440 | + } |
| 4441 | + |
| 4442 | + child_cl->wbfs.cstats = alloc_percpu(struct ceetm_class_stats); |
| 4443 | + if (!child_cl->wbfs.cstats) { |
| 4444 | + pr_err(KBUILD_BASENAME " : %s : alloc_percpu() failed\n", |
| 4445 | + __func__); |
| 4446 | + err = -ENOMEM; |
| 4447 | + goto err_init_wbfs_cls; |
| 4448 | + } |
| 4449 | + |
| 4450 | + child_cl->common.classid = TC_H_MAKE(sch->handle, (i + 1)); |
| 4451 | + child_cl->refcnt = 1; |
| 4452 | + child_cl->parent = sch; |
| 4453 | + child_cl->type = CEETM_WBFS; |
| 4454 | + child_cl->shaped = priv->shaped; |
| 4455 | + child_cl->wbfs.fq = NULL; |
| 4456 | + child_cl->wbfs.cq = NULL; |
| 4457 | + child_cl->wbfs.weight = qopt->qweight[i]; |
| 4458 | + |
| 4459 | + if (priv->wbfs.group_type == WBFS_GRP_B) |
| 4460 | + id = WBFS_GRP_B_OFFSET + i; |
| 4461 | + else |
| 4462 | + id = WBFS_GRP_A_OFFSET + i; |
| 4463 | + |
| 4464 | + err = ceetm_config_wbfs_cls(child_cl, dev, channel, id, |
| 4465 | + priv->wbfs.group_type); |
| 4466 | + if (err) { |
| 4467 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the ceetm wbfs class %X\n", |
| 4468 | + __func__, child_cl->common.classid); |
| 4469 | + goto err_init_wbfs_cls; |
| 4470 | + } |
| 4471 | + |
| 4472 | + /* Add class handle in Qdisc */ |
| 4473 | + ceetm_link_class(sch, &priv->clhash, &child_cl->common); |
| 4474 | + pr_debug(KBUILD_BASENAME " : %s : added ceetm wbfs class %X associated with CQ %d and CCG %d\n", |
| 4475 | + __func__, child_cl->common.classid, |
| 4476 | + child_cl->wbfs.cq->idx, child_cl->wbfs.ccg->idx); |
| 4477 | + } |
| 4478 | + |
| 4479 | + /* Signal the root class that a group has been configured */ |
| 4480 | + switch (priv->wbfs.group_type) { |
| 4481 | + case WBFS_GRP_LARGE: |
| 4482 | + root_cl->root.wbfs_grp_large = true; |
| 4483 | + break; |
| 4484 | + case WBFS_GRP_A: |
| 4485 | + root_cl->root.wbfs_grp_a = true; |
| 4486 | + break; |
| 4487 | + case WBFS_GRP_B: |
| 4488 | + root_cl->root.wbfs_grp_b = true; |
| 4489 | + break; |
| 4490 | + } |
| 4491 | + |
| 4492 | + return 0; |
| 4493 | + |
| 4494 | +err_init_wbfs_cls: |
| 4495 | + ceetm_cls_destroy(sch, child_cl); |
| 4496 | +err_init_wbfs: |
| 4497 | + ceetm_destroy(sch); |
| 4498 | + return err; |
| 4499 | +} |
| 4500 | + |
| 4501 | +/* Configure a generic ceetm qdisc */ |
| 4502 | +static int ceetm_init(struct Qdisc *sch, struct nlattr *opt) |
| 4503 | +{ |
| 4504 | + struct tc_ceetm_qopt *qopt; |
| 4505 | + struct nlattr *tb[TCA_CEETM_QOPS + 1]; |
| 4506 | + int ret; |
| 4507 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 4508 | + struct net_device *dev = qdisc_dev(sch); |
| 4509 | + |
| 4510 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4511 | + |
| 4512 | + if (!netif_is_multiqueue(dev)) |
| 4513 | + return -EOPNOTSUPP; |
| 4514 | + |
| 4515 | + if (!opt) { |
| 4516 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4517 | + return -EINVAL; |
| 4518 | + } |
| 4519 | + |
| 4520 | + ret = nla_parse_nested(tb, TCA_CEETM_QOPS, opt, ceetm_policy); |
| 4521 | + if (ret < 0) { |
| 4522 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4523 | + return ret; |
| 4524 | + } |
| 4525 | + |
| 4526 | + if (!tb[TCA_CEETM_QOPS]) { |
| 4527 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4528 | + return -EINVAL; |
| 4529 | + } |
| 4530 | + |
| 4531 | + if (TC_H_MIN(sch->handle)) { |
| 4532 | + pr_err("CEETM: a qdisc should not have a minor\n"); |
| 4533 | + return -EINVAL; |
| 4534 | + } |
| 4535 | + |
| 4536 | + qopt = nla_data(tb[TCA_CEETM_QOPS]); |
| 4537 | + |
| 4538 | + /* Initialize the class hash list. Each qdisc has its own class hash */ |
| 4539 | + ret = qdisc_class_hash_init(&priv->clhash); |
| 4540 | + if (ret < 0) { |
| 4541 | + pr_err(KBUILD_BASENAME " : %s : qdisc_class_hash_init failed\n", |
| 4542 | + __func__); |
| 4543 | + return ret; |
| 4544 | + } |
| 4545 | + |
| 4546 | + priv->type = qopt->type; |
| 4547 | + |
| 4548 | + switch (priv->type) { |
| 4549 | + case CEETM_ROOT: |
| 4550 | + ret = ceetm_init_root(sch, priv, qopt); |
| 4551 | + break; |
| 4552 | + case CEETM_PRIO: |
| 4553 | + ret = ceetm_init_prio(sch, priv, qopt); |
| 4554 | + break; |
| 4555 | + case CEETM_WBFS: |
| 4556 | + ret = ceetm_init_wbfs(sch, priv, qopt); |
| 4557 | + break; |
| 4558 | + default: |
| 4559 | + pr_err(KBUILD_BASENAME " : %s : invalid qdisc\n", __func__); |
| 4560 | + ceetm_destroy(sch); |
| 4561 | + ret = -EINVAL; |
| 4562 | + } |
| 4563 | + |
| 4564 | + return ret; |
| 4565 | +} |
| 4566 | + |
| 4567 | +/* Edit a root ceetm qdisc */ |
| 4568 | +static int ceetm_change_root(struct Qdisc *sch, struct ceetm_qdisc *priv, |
| 4569 | + struct net_device *dev, |
| 4570 | + struct tc_ceetm_qopt *qopt) |
| 4571 | +{ |
| 4572 | + int err = 0; |
| 4573 | + u64 bps; |
| 4574 | + |
| 4575 | + if (priv->shaped != (bool)qopt->shaped) { |
| 4576 | + pr_err("CEETM: qdisc %X is %s\n", sch->handle, |
| 4577 | + priv->shaped ? "shaped" : "unshaped"); |
| 4578 | + return -EINVAL; |
| 4579 | + } |
| 4580 | + |
| 4581 | + /* Nothing to modify for unshaped qdiscs */ |
| 4582 | + if (!priv->shaped) |
| 4583 | + return 0; |
| 4584 | + |
| 4585 | + /* Configure the LNI shaper */ |
| 4586 | + if (priv->root.overhead != qopt->overhead) { |
| 4587 | + err = qman_ceetm_lni_enable_shaper(priv->root.lni, 1, |
| 4588 | + qopt->overhead); |
| 4589 | + if (err) |
| 4590 | + goto change_err; |
| 4591 | + priv->root.overhead = qopt->overhead; |
| 4592 | + } |
| 4593 | + |
| 4594 | + if (priv->root.rate != qopt->rate) { |
| 4595 | + bps = qopt->rate << 3; /* Bps -> bps */ |
| 4596 | + err = qman_ceetm_lni_set_commit_rate_bps(priv->root.lni, bps, |
| 4597 | + dev->mtu); |
| 4598 | + if (err) |
| 4599 | + goto change_err; |
| 4600 | + priv->root.rate = qopt->rate; |
| 4601 | + } |
| 4602 | + |
| 4603 | + if (priv->root.ceil != qopt->ceil) { |
| 4604 | + bps = qopt->ceil << 3; /* Bps -> bps */ |
| 4605 | + err = qman_ceetm_lni_set_excess_rate_bps(priv->root.lni, bps, |
| 4606 | + dev->mtu); |
| 4607 | + if (err) |
| 4608 | + goto change_err; |
| 4609 | + priv->root.ceil = qopt->ceil; |
| 4610 | + } |
| 4611 | + |
| 4612 | + return 0; |
| 4613 | + |
| 4614 | +change_err: |
| 4615 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the root ceetm qdisc %X\n", |
| 4616 | + __func__, sch->handle); |
| 4617 | + return err; |
| 4618 | +} |
| 4619 | + |
| 4620 | +/* Edit a wbfs ceetm qdisc */ |
| 4621 | +static int ceetm_change_wbfs(struct Qdisc *sch, struct ceetm_qdisc *priv, |
| 4622 | + struct tc_ceetm_qopt *qopt) |
| 4623 | +{ |
| 4624 | + int err; |
| 4625 | + bool group_b; |
| 4626 | + struct qm_ceetm_channel *channel; |
| 4627 | + struct ceetm_class *prio_class, *root_class; |
| 4628 | + struct ceetm_qdisc *prio_qdisc; |
| 4629 | + |
| 4630 | + if (qopt->qcount) { |
| 4631 | + pr_err("CEETM: the qcount can not be modified\n"); |
| 4632 | + return -EINVAL; |
| 4633 | + } |
| 4634 | + |
| 4635 | + if (qopt->qweight[0]) { |
| 4636 | + pr_err("CEETM: the qweight can be modified through the wbfs classes\n"); |
| 4637 | + return -EINVAL; |
| 4638 | + } |
| 4639 | + |
| 4640 | + if (!priv->shaped && (qopt->cr || qopt->er)) { |
| 4641 | + pr_err("CEETM: CR/ER can be enabled only for shaped wbfs ceetm qdiscs\n"); |
| 4642 | + return -EINVAL; |
| 4643 | + } |
| 4644 | + |
| 4645 | + if (priv->shaped && !(qopt->cr || qopt->er)) { |
| 4646 | + pr_err("CEETM: either CR or ER must be enabled for shaped wbfs ceetm qdiscs\n"); |
| 4647 | + return -EINVAL; |
| 4648 | + } |
| 4649 | + |
| 4650 | + /* Nothing to modify for unshaped qdiscs */ |
| 4651 | + if (!priv->shaped) |
| 4652 | + return 0; |
| 4653 | + |
| 4654 | + prio_class = priv->wbfs.parent; |
| 4655 | + prio_qdisc = qdisc_priv(prio_class->parent); |
| 4656 | + root_class = prio_qdisc->prio.parent; |
| 4657 | + channel = root_class->root.ch; |
| 4658 | + group_b = priv->wbfs.group_type == WBFS_GRP_B; |
| 4659 | + |
| 4660 | + if (qopt->cr != priv->wbfs.cr) { |
| 4661 | + err = qman_ceetm_channel_set_group_cr_eligibility(channel, |
| 4662 | + group_b, |
| 4663 | + qopt->cr); |
| 4664 | + if (err) |
| 4665 | + goto change_err; |
| 4666 | + priv->wbfs.cr = qopt->cr; |
| 4667 | + } |
| 4668 | + |
| 4669 | + if (qopt->er != priv->wbfs.er) { |
| 4670 | + err = qman_ceetm_channel_set_group_er_eligibility(channel, |
| 4671 | + group_b, |
| 4672 | + qopt->er); |
| 4673 | + if (err) |
| 4674 | + goto change_err; |
| 4675 | + priv->wbfs.er = qopt->er; |
| 4676 | + } |
| 4677 | + |
| 4678 | + return 0; |
| 4679 | + |
| 4680 | +change_err: |
| 4681 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the wbfs ceetm qdisc %X\n", |
| 4682 | + __func__, sch->handle); |
| 4683 | + return err; |
| 4684 | +} |
| 4685 | + |
| 4686 | +/* Edit a ceetm qdisc */ |
| 4687 | +static int ceetm_change(struct Qdisc *sch, struct nlattr *opt) |
| 4688 | +{ |
| 4689 | + struct tc_ceetm_qopt *qopt; |
| 4690 | + struct nlattr *tb[TCA_CEETM_QOPS + 1]; |
| 4691 | + int ret; |
| 4692 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 4693 | + struct net_device *dev = qdisc_dev(sch); |
| 4694 | + |
| 4695 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4696 | + |
| 4697 | + ret = nla_parse_nested(tb, TCA_CEETM_QOPS, opt, ceetm_policy); |
| 4698 | + if (ret < 0) { |
| 4699 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4700 | + return ret; |
| 4701 | + } |
| 4702 | + |
| 4703 | + if (!tb[TCA_CEETM_QOPS]) { |
| 4704 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4705 | + return -EINVAL; |
| 4706 | + } |
| 4707 | + |
| 4708 | + if (TC_H_MIN(sch->handle)) { |
| 4709 | + pr_err("CEETM: a qdisc should not have a minor\n"); |
| 4710 | + return -EINVAL; |
| 4711 | + } |
| 4712 | + |
| 4713 | + qopt = nla_data(tb[TCA_CEETM_QOPS]); |
| 4714 | + |
| 4715 | + if (priv->type != qopt->type) { |
| 4716 | + pr_err("CEETM: qdisc %X is not of the provided type\n", |
| 4717 | + sch->handle); |
| 4718 | + return -EINVAL; |
| 4719 | + } |
| 4720 | + |
| 4721 | + switch (priv->type) { |
| 4722 | + case CEETM_ROOT: |
| 4723 | + ret = ceetm_change_root(sch, priv, dev, qopt); |
| 4724 | + break; |
| 4725 | + case CEETM_PRIO: |
| 4726 | + pr_err("CEETM: prio qdiscs can not be modified\n"); |
| 4727 | + ret = -EINVAL; |
| 4728 | + break; |
| 4729 | + case CEETM_WBFS: |
| 4730 | + ret = ceetm_change_wbfs(sch, priv, qopt); |
| 4731 | + break; |
| 4732 | + default: |
| 4733 | + pr_err(KBUILD_BASENAME " : %s : invalid qdisc\n", __func__); |
| 4734 | + ret = -EINVAL; |
| 4735 | + } |
| 4736 | + |
| 4737 | + return ret; |
| 4738 | +} |
| 4739 | + |
| 4740 | +/* Attach the underlying pfifo qdiscs */ |
| 4741 | +static void ceetm_attach(struct Qdisc *sch) |
| 4742 | +{ |
| 4743 | + struct net_device *dev = qdisc_dev(sch); |
| 4744 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 4745 | + struct Qdisc *qdisc, *old_qdisc; |
| 4746 | + unsigned int i; |
| 4747 | + |
| 4748 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 4749 | + |
| 4750 | + for (i = 0; i < dev->num_tx_queues; i++) { |
| 4751 | + qdisc = priv->root.qdiscs[i]; |
| 4752 | + old_qdisc = dev_graft_qdisc(qdisc->dev_queue, qdisc); |
| 4753 | + if (old_qdisc) |
| 4754 | + qdisc_destroy(old_qdisc); |
| 4755 | + } |
| 4756 | +} |
| 4757 | + |
| 4758 | +static unsigned long ceetm_cls_get(struct Qdisc *sch, u32 classid) |
| 4759 | +{ |
| 4760 | + struct ceetm_class *cl; |
| 4761 | + |
| 4762 | + pr_debug(KBUILD_BASENAME " : %s : classid %X from qdisc %X\n", |
| 4763 | + __func__, classid, sch->handle); |
| 4764 | + cl = ceetm_find(classid, sch); |
| 4765 | + |
| 4766 | + if (cl) |
| 4767 | + cl->refcnt++; /* Will decrement in put() */ |
| 4768 | + return (unsigned long)cl; |
| 4769 | +} |
| 4770 | + |
| 4771 | +static void ceetm_cls_put(struct Qdisc *sch, unsigned long arg) |
| 4772 | +{ |
| 4773 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 4774 | + |
| 4775 | + pr_debug(KBUILD_BASENAME " : %s : classid %X from qdisc %X\n", |
| 4776 | + __func__, cl->common.classid, sch->handle); |
| 4777 | + cl->refcnt--; |
| 4778 | + |
| 4779 | + if (cl->refcnt == 0) |
| 4780 | + ceetm_cls_destroy(sch, cl); |
| 4781 | +} |
| 4782 | + |
| 4783 | +static int ceetm_cls_change_root(struct ceetm_class *cl, |
| 4784 | + struct tc_ceetm_copt *copt, |
| 4785 | + struct net_device *dev) |
| 4786 | +{ |
| 4787 | + int err; |
| 4788 | + u64 bps; |
| 4789 | + |
| 4790 | + if ((bool)copt->shaped != cl->shaped) { |
| 4791 | + pr_err("CEETM: class %X is %s\n", cl->common.classid, |
| 4792 | + cl->shaped ? "shaped" : "unshaped"); |
| 4793 | + return -EINVAL; |
| 4794 | + } |
| 4795 | + |
| 4796 | + if (cl->shaped && cl->root.rate != copt->rate) { |
| 4797 | + bps = copt->rate << 3; /* Bps -> bps */ |
| 4798 | + err = qman_ceetm_channel_set_commit_rate_bps(cl->root.ch, bps, |
| 4799 | + dev->mtu); |
| 4800 | + if (err) |
| 4801 | + goto change_cls_err; |
| 4802 | + cl->root.rate = copt->rate; |
| 4803 | + } |
| 4804 | + |
| 4805 | + if (cl->shaped && cl->root.ceil != copt->ceil) { |
| 4806 | + bps = copt->ceil << 3; /* Bps -> bps */ |
| 4807 | + err = qman_ceetm_channel_set_excess_rate_bps(cl->root.ch, bps, |
| 4808 | + dev->mtu); |
| 4809 | + if (err) |
| 4810 | + goto change_cls_err; |
| 4811 | + cl->root.ceil = copt->ceil; |
| 4812 | + } |
| 4813 | + |
| 4814 | + if (!cl->shaped && cl->root.tbl != copt->tbl) { |
| 4815 | + err = qman_ceetm_channel_set_weight(cl->root.ch, copt->tbl); |
| 4816 | + if (err) |
| 4817 | + goto change_cls_err; |
| 4818 | + cl->root.tbl = copt->tbl; |
| 4819 | + } |
| 4820 | + |
| 4821 | + return 0; |
| 4822 | + |
| 4823 | +change_cls_err: |
| 4824 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the ceetm root class %X\n", |
| 4825 | + __func__, cl->common.classid); |
| 4826 | + return err; |
| 4827 | +} |
| 4828 | + |
| 4829 | +static int ceetm_cls_change_prio(struct ceetm_class *cl, |
| 4830 | + struct tc_ceetm_copt *copt) |
| 4831 | +{ |
| 4832 | + int err; |
| 4833 | + |
| 4834 | + if (!cl->shaped && (copt->cr || copt->er)) { |
| 4835 | + pr_err("CEETM: only shaped classes can have CR and ER enabled\n"); |
| 4836 | + return -EINVAL; |
| 4837 | + } |
| 4838 | + |
| 4839 | + if (cl->prio.cr != (bool)copt->cr) { |
| 4840 | + err = qman_ceetm_channel_set_cq_cr_eligibility( |
| 4841 | + cl->prio.cq->parent, |
| 4842 | + cl->prio.cq->idx, |
| 4843 | + copt->cr); |
| 4844 | + if (err) |
| 4845 | + goto change_cls_err; |
| 4846 | + cl->prio.cr = copt->cr; |
| 4847 | + } |
| 4848 | + |
| 4849 | + if (cl->prio.er != (bool)copt->er) { |
| 4850 | + err = qman_ceetm_channel_set_cq_er_eligibility( |
| 4851 | + cl->prio.cq->parent, |
| 4852 | + cl->prio.cq->idx, |
| 4853 | + copt->er); |
| 4854 | + if (err) |
| 4855 | + goto change_cls_err; |
| 4856 | + cl->prio.er = copt->er; |
| 4857 | + } |
| 4858 | + |
| 4859 | + return 0; |
| 4860 | + |
| 4861 | +change_cls_err: |
| 4862 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the ceetm prio class %X\n", |
| 4863 | + __func__, cl->common.classid); |
| 4864 | + return err; |
| 4865 | +} |
| 4866 | + |
| 4867 | +static int ceetm_cls_change_wbfs(struct ceetm_class *cl, |
| 4868 | + struct tc_ceetm_copt *copt) |
| 4869 | +{ |
| 4870 | + int err; |
| 4871 | + |
| 4872 | + if (copt->weight != cl->wbfs.weight) { |
| 4873 | + /* Configure the CQ weight: real number multiplied by 100 to |
| 4874 | + * get rid of the fraction |
| 4875 | + */ |
| 4876 | + err = qman_ceetm_set_queue_weight_in_ratio(cl->wbfs.cq, |
| 4877 | + copt->weight * 100); |
| 4878 | + |
| 4879 | + if (err) { |
| 4880 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the ceetm wbfs class %X\n", |
| 4881 | + __func__, cl->common.classid); |
| 4882 | + return err; |
| 4883 | + } |
| 4884 | + |
| 4885 | + cl->wbfs.weight = copt->weight; |
| 4886 | + } |
| 4887 | + |
| 4888 | + return 0; |
| 4889 | +} |
| 4890 | + |
| 4891 | +/* Add a ceetm root class or configure a ceetm root/prio/wbfs class */ |
| 4892 | +static int ceetm_cls_change(struct Qdisc *sch, u32 classid, u32 parentid, |
| 4893 | + struct nlattr **tca, unsigned long *arg) |
| 4894 | +{ |
| 4895 | + int err; |
| 4896 | + u64 bps; |
| 4897 | + struct ceetm_qdisc *priv; |
| 4898 | + struct ceetm_class *cl = (struct ceetm_class *)*arg; |
| 4899 | + struct nlattr *opt = tca[TCA_OPTIONS]; |
| 4900 | + struct nlattr *tb[__TCA_CEETM_MAX]; |
| 4901 | + struct tc_ceetm_copt *copt; |
| 4902 | + struct qm_ceetm_channel *channel; |
| 4903 | + struct net_device *dev = qdisc_dev(sch); |
| 4904 | + |
| 4905 | + pr_debug(KBUILD_BASENAME " : %s : classid %X under qdisc %X\n", |
| 4906 | + __func__, classid, sch->handle); |
| 4907 | + |
| 4908 | + if (strcmp(sch->ops->id, ceetm_qdisc_ops.id)) { |
| 4909 | + pr_err("CEETM: a ceetm class can not be attached to other qdisc/class types\n"); |
| 4910 | + return -EINVAL; |
| 4911 | + } |
| 4912 | + |
| 4913 | + priv = qdisc_priv(sch); |
| 4914 | + |
| 4915 | + if (!opt) { |
| 4916 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4917 | + return -EINVAL; |
| 4918 | + } |
| 4919 | + |
| 4920 | + if (!cl && sch->handle != parentid) { |
| 4921 | + pr_err("CEETM: classes can be attached to the root ceetm qdisc only\n"); |
| 4922 | + return -EINVAL; |
| 4923 | + } |
| 4924 | + |
| 4925 | + if (!cl && priv->type != CEETM_ROOT) { |
| 4926 | + pr_err("CEETM: only root ceetm classes can be attached to the root ceetm qdisc\n"); |
| 4927 | + return -EINVAL; |
| 4928 | + } |
| 4929 | + |
| 4930 | + err = nla_parse_nested(tb, TCA_CEETM_COPT, opt, ceetm_policy); |
| 4931 | + if (err < 0) { |
| 4932 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4933 | + return -EINVAL; |
| 4934 | + } |
| 4935 | + |
| 4936 | + if (!tb[TCA_CEETM_COPT]) { |
| 4937 | + pr_err(KBUILD_BASENAME " : %s : tc error\n", __func__); |
| 4938 | + return -EINVAL; |
| 4939 | + } |
| 4940 | + |
| 4941 | + if (TC_H_MIN(classid) >= PFIFO_MIN_OFFSET) { |
| 4942 | + pr_err("CEETM: only minors 0x01 to 0x20 can be used for ceetm root classes\n"); |
| 4943 | + return -EINVAL; |
| 4944 | + } |
| 4945 | + |
| 4946 | + copt = nla_data(tb[TCA_CEETM_COPT]); |
| 4947 | + |
| 4948 | + /* Configure an existing ceetm class */ |
| 4949 | + if (cl) { |
| 4950 | + if (copt->type != cl->type) { |
| 4951 | + pr_err("CEETM: class %X is not of the provided type\n", |
| 4952 | + cl->common.classid); |
| 4953 | + return -EINVAL; |
| 4954 | + } |
| 4955 | + |
| 4956 | + switch (copt->type) { |
| 4957 | + case CEETM_ROOT: |
| 4958 | + return ceetm_cls_change_root(cl, copt, dev); |
| 4959 | + |
| 4960 | + case CEETM_PRIO: |
| 4961 | + return ceetm_cls_change_prio(cl, copt); |
| 4962 | + |
| 4963 | + case CEETM_WBFS: |
| 4964 | + return ceetm_cls_change_wbfs(cl, copt); |
| 4965 | + |
| 4966 | + default: |
| 4967 | + pr_err(KBUILD_BASENAME " : %s : invalid class\n", |
| 4968 | + __func__); |
| 4969 | + return -EINVAL; |
| 4970 | + } |
| 4971 | + } |
| 4972 | + |
| 4973 | + /* Add a new root ceetm class */ |
| 4974 | + if (copt->type != CEETM_ROOT) { |
| 4975 | + pr_err("CEETM: only root ceetm classes can be attached to the root ceetm qdisc\n"); |
| 4976 | + return -EINVAL; |
| 4977 | + } |
| 4978 | + |
| 4979 | + if (copt->shaped && !priv->shaped) { |
| 4980 | + pr_err("CEETM: can not add a shaped ceetm root class under an unshaped ceetm root qdisc\n"); |
| 4981 | + return -EINVAL; |
| 4982 | + } |
| 4983 | + |
| 4984 | + cl = kzalloc(sizeof(*cl), GFP_KERNEL); |
| 4985 | + if (!cl) |
| 4986 | + return -ENOMEM; |
| 4987 | + |
| 4988 | + cl->type = copt->type; |
| 4989 | + cl->shaped = copt->shaped; |
| 4990 | + cl->root.rate = copt->rate; |
| 4991 | + cl->root.ceil = copt->ceil; |
| 4992 | + cl->root.tbl = copt->tbl; |
| 4993 | + |
| 4994 | + cl->common.classid = classid; |
| 4995 | + cl->refcnt = 1; |
| 4996 | + cl->parent = sch; |
| 4997 | + cl->root.child = NULL; |
| 4998 | + cl->root.wbfs_grp_a = false; |
| 4999 | + cl->root.wbfs_grp_b = false; |
| 5000 | + cl->root.wbfs_grp_large = false; |
| 5001 | + |
| 5002 | + /* Claim a CEETM channel */ |
| 5003 | + err = qman_ceetm_channel_claim(&channel, priv->root.lni); |
| 5004 | + if (err) { |
| 5005 | + pr_err(KBUILD_BASENAME " : %s : failed to claim a channel\n", |
| 5006 | + __func__); |
| 5007 | + goto claim_err; |
| 5008 | + } |
| 5009 | + |
| 5010 | + cl->root.ch = channel; |
| 5011 | + |
| 5012 | + if (cl->shaped) { |
| 5013 | + /* Configure the channel shaper */ |
| 5014 | + err = qman_ceetm_channel_enable_shaper(channel, 1); |
| 5015 | + if (err) |
| 5016 | + goto channel_err; |
| 5017 | + |
| 5018 | + bps = cl->root.rate << 3; /* Bps -> bps */ |
| 5019 | + err = qman_ceetm_channel_set_commit_rate_bps(channel, bps, |
| 5020 | + dev->mtu); |
| 5021 | + if (err) |
| 5022 | + goto channel_err; |
| 5023 | + |
| 5024 | + bps = cl->root.ceil << 3; /* Bps -> bps */ |
| 5025 | + err = qman_ceetm_channel_set_excess_rate_bps(channel, bps, |
| 5026 | + dev->mtu); |
| 5027 | + if (err) |
| 5028 | + goto channel_err; |
| 5029 | + |
| 5030 | + } else { |
| 5031 | + /* Configure the uFQ algorithm */ |
| 5032 | + err = qman_ceetm_channel_set_weight(channel, cl->root.tbl); |
| 5033 | + if (err) |
| 5034 | + goto channel_err; |
| 5035 | + } |
| 5036 | + |
| 5037 | + /* Add class handle in Qdisc */ |
| 5038 | + ceetm_link_class(sch, &priv->clhash, &cl->common); |
| 5039 | + |
| 5040 | + pr_debug(KBUILD_BASENAME " : %s : configured class %X associated with channel %d\n", |
| 5041 | + __func__, classid, channel->idx); |
| 5042 | + *arg = (unsigned long)cl; |
| 5043 | + return 0; |
| 5044 | + |
| 5045 | +channel_err: |
| 5046 | + pr_err(KBUILD_BASENAME " : %s : failed to configure the channel %d\n", |
| 5047 | + __func__, channel->idx); |
| 5048 | + if (qman_ceetm_channel_release(channel)) |
| 5049 | + pr_err(KBUILD_BASENAME " : %s : failed to release the channel %d\n", |
| 5050 | + __func__, channel->idx); |
| 5051 | +claim_err: |
| 5052 | + kfree(cl); |
| 5053 | + return err; |
| 5054 | +} |
| 5055 | + |
| 5056 | +static void ceetm_cls_walk(struct Qdisc *sch, struct qdisc_walker *arg) |
| 5057 | +{ |
| 5058 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 5059 | + struct ceetm_class *cl; |
| 5060 | + unsigned int i; |
| 5061 | + |
| 5062 | + pr_debug(KBUILD_BASENAME " : %s : qdisc %X\n", __func__, sch->handle); |
| 5063 | + |
| 5064 | + if (arg->stop) |
| 5065 | + return; |
| 5066 | + |
| 5067 | + for (i = 0; i < priv->clhash.hashsize; i++) { |
| 5068 | + hlist_for_each_entry(cl, &priv->clhash.hash[i], common.hnode) { |
| 5069 | + if (arg->count < arg->skip) { |
| 5070 | + arg->count++; |
| 5071 | + continue; |
| 5072 | + } |
| 5073 | + if (arg->fn(sch, (unsigned long)cl, arg) < 0) { |
| 5074 | + arg->stop = 1; |
| 5075 | + return; |
| 5076 | + } |
| 5077 | + arg->count++; |
| 5078 | + } |
| 5079 | + } |
| 5080 | +} |
| 5081 | + |
| 5082 | +static int ceetm_cls_dump(struct Qdisc *sch, unsigned long arg, |
| 5083 | + struct sk_buff *skb, struct tcmsg *tcm) |
| 5084 | +{ |
| 5085 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5086 | + struct nlattr *nest; |
| 5087 | + struct tc_ceetm_copt copt; |
| 5088 | + |
| 5089 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", |
| 5090 | + __func__, cl->common.classid, sch->handle); |
| 5091 | + |
| 5092 | + sch_tree_lock(sch); |
| 5093 | + |
| 5094 | + tcm->tcm_parent = ((struct Qdisc *)cl->parent)->handle; |
| 5095 | + tcm->tcm_handle = cl->common.classid; |
| 5096 | + |
| 5097 | + memset(&copt, 0, sizeof(copt)); |
| 5098 | + |
| 5099 | + copt.shaped = cl->shaped; |
| 5100 | + copt.type = cl->type; |
| 5101 | + |
| 5102 | + switch (cl->type) { |
| 5103 | + case CEETM_ROOT: |
| 5104 | + if (cl->root.child) |
| 5105 | + tcm->tcm_info = cl->root.child->handle; |
| 5106 | + |
| 5107 | + copt.rate = cl->root.rate; |
| 5108 | + copt.ceil = cl->root.ceil; |
| 5109 | + copt.tbl = cl->root.tbl; |
| 5110 | + break; |
| 5111 | + |
| 5112 | + case CEETM_PRIO: |
| 5113 | + if (cl->prio.child) |
| 5114 | + tcm->tcm_info = cl->prio.child->handle; |
| 5115 | + |
| 5116 | + copt.cr = cl->prio.cr; |
| 5117 | + copt.er = cl->prio.er; |
| 5118 | + break; |
| 5119 | + |
| 5120 | + case CEETM_WBFS: |
| 5121 | + copt.weight = cl->wbfs.weight; |
| 5122 | + break; |
| 5123 | + } |
| 5124 | + |
| 5125 | + nest = nla_nest_start(skb, TCA_OPTIONS); |
| 5126 | + if (!nest) |
| 5127 | + goto nla_put_failure; |
| 5128 | + if (nla_put(skb, TCA_CEETM_COPT, sizeof(copt), &copt)) |
| 5129 | + goto nla_put_failure; |
| 5130 | + nla_nest_end(skb, nest); |
| 5131 | + sch_tree_unlock(sch); |
| 5132 | + return skb->len; |
| 5133 | + |
| 5134 | +nla_put_failure: |
| 5135 | + sch_tree_unlock(sch); |
| 5136 | + nla_nest_cancel(skb, nest); |
| 5137 | + return -EMSGSIZE; |
| 5138 | +} |
| 5139 | + |
| 5140 | +static int ceetm_cls_delete(struct Qdisc *sch, unsigned long arg) |
| 5141 | +{ |
| 5142 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 5143 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5144 | + |
| 5145 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", |
| 5146 | + __func__, cl->common.classid, sch->handle); |
| 5147 | + |
| 5148 | + sch_tree_lock(sch); |
| 5149 | + qdisc_class_hash_remove(&priv->clhash, &cl->common); |
| 5150 | + cl->refcnt--; |
| 5151 | + |
| 5152 | + /* The refcnt should be at least 1 since we have incremented it in |
| 5153 | + * get(). Will decrement again in put() where we will call destroy() |
| 5154 | + * to actually free the memory if it reaches 0. |
| 5155 | + */ |
| 5156 | + WARN_ON(cl->refcnt == 0); |
| 5157 | + |
| 5158 | + sch_tree_unlock(sch); |
| 5159 | + return 0; |
| 5160 | +} |
| 5161 | + |
| 5162 | +/* Get the class' child qdisc, if any */ |
| 5163 | +static struct Qdisc *ceetm_cls_leaf(struct Qdisc *sch, unsigned long arg) |
| 5164 | +{ |
| 5165 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5166 | + |
| 5167 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", |
| 5168 | + __func__, cl->common.classid, sch->handle); |
| 5169 | + |
| 5170 | + switch (cl->type) { |
| 5171 | + case CEETM_ROOT: |
| 5172 | + return cl->root.child; |
| 5173 | + |
| 5174 | + case CEETM_PRIO: |
| 5175 | + return cl->prio.child; |
| 5176 | + } |
| 5177 | + |
| 5178 | + return NULL; |
| 5179 | +} |
| 5180 | + |
| 5181 | +static int ceetm_cls_graft(struct Qdisc *sch, unsigned long arg, |
| 5182 | + struct Qdisc *new, struct Qdisc **old) |
| 5183 | +{ |
| 5184 | + if (new && strcmp(new->ops->id, ceetm_qdisc_ops.id)) { |
| 5185 | + pr_err("CEETM: only ceetm qdiscs can be attached to ceetm classes\n"); |
| 5186 | + return -EOPNOTSUPP; |
| 5187 | + } |
| 5188 | + |
| 5189 | + return 0; |
| 5190 | +} |
| 5191 | + |
| 5192 | +static int ceetm_cls_dump_stats(struct Qdisc *sch, unsigned long arg, |
| 5193 | + struct gnet_dump *d) |
| 5194 | +{ |
| 5195 | + unsigned int i; |
| 5196 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5197 | + struct gnet_stats_basic_packed tmp_bstats; |
| 5198 | + struct ceetm_class_stats *cstats = NULL; |
| 5199 | + struct qm_ceetm_cq *cq = NULL; |
| 5200 | + struct tc_ceetm_xstats xstats; |
| 5201 | + |
| 5202 | + memset(&xstats, 0, sizeof(xstats)); |
| 5203 | + memset(&tmp_bstats, 0, sizeof(tmp_bstats)); |
| 5204 | + |
| 5205 | + switch (cl->type) { |
| 5206 | + case CEETM_ROOT: |
| 5207 | + return 0; |
| 5208 | + case CEETM_PRIO: |
| 5209 | + cq = cl->prio.cq; |
| 5210 | + break; |
| 5211 | + case CEETM_WBFS: |
| 5212 | + cq = cl->wbfs.cq; |
| 5213 | + break; |
| 5214 | + } |
| 5215 | + |
| 5216 | + for_each_online_cpu(i) { |
| 5217 | + switch (cl->type) { |
| 5218 | + case CEETM_PRIO: |
| 5219 | + cstats = per_cpu_ptr(cl->prio.cstats, i); |
| 5220 | + break; |
| 5221 | + case CEETM_WBFS: |
| 5222 | + cstats = per_cpu_ptr(cl->wbfs.cstats, i); |
| 5223 | + break; |
| 5224 | + } |
| 5225 | + |
| 5226 | + if (cstats) { |
| 5227 | + xstats.ern_drop_count += cstats->ern_drop_count; |
| 5228 | + xstats.congested_count += cstats->congested_count; |
| 5229 | + tmp_bstats.bytes += cstats->bstats.bytes; |
| 5230 | + tmp_bstats.packets += cstats->bstats.packets; |
| 5231 | + } |
| 5232 | + } |
| 5233 | + |
| 5234 | + if (gnet_stats_copy_basic(d, NULL, &tmp_bstats) < 0) |
| 5235 | + return -1; |
| 5236 | + |
| 5237 | + if (cq && qman_ceetm_cq_get_dequeue_statistics(cq, 0, |
| 5238 | + &xstats.frame_count, |
| 5239 | + &xstats.byte_count)) |
| 5240 | + return -1; |
| 5241 | + |
| 5242 | + return gnet_stats_copy_app(d, &xstats, sizeof(xstats)); |
| 5243 | +} |
| 5244 | + |
| 5245 | +static struct tcf_proto **ceetm_tcf_chain(struct Qdisc *sch, unsigned long arg) |
| 5246 | +{ |
| 5247 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 5248 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5249 | + struct tcf_proto **fl = cl ? &cl->filter_list : &priv->filter_list; |
| 5250 | + |
| 5251 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", __func__, |
| 5252 | + cl ? cl->common.classid : 0, sch->handle); |
| 5253 | + return fl; |
| 5254 | +} |
| 5255 | + |
| 5256 | +static unsigned long ceetm_tcf_bind(struct Qdisc *sch, unsigned long parent, |
| 5257 | + u32 classid) |
| 5258 | +{ |
| 5259 | + struct ceetm_class *cl = ceetm_find(classid, sch); |
| 5260 | + |
| 5261 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", __func__, |
| 5262 | + cl ? cl->common.classid : 0, sch->handle); |
| 5263 | + return (unsigned long)cl; |
| 5264 | +} |
| 5265 | + |
| 5266 | +static void ceetm_tcf_unbind(struct Qdisc *sch, unsigned long arg) |
| 5267 | +{ |
| 5268 | + struct ceetm_class *cl = (struct ceetm_class *)arg; |
| 5269 | + |
| 5270 | + pr_debug(KBUILD_BASENAME " : %s : class %X under qdisc %X\n", __func__, |
| 5271 | + cl ? cl->common.classid : 0, sch->handle); |
| 5272 | +} |
| 5273 | + |
| 5274 | +const struct Qdisc_class_ops ceetm_cls_ops = { |
| 5275 | + .graft = ceetm_cls_graft, |
| 5276 | + .leaf = ceetm_cls_leaf, |
| 5277 | + .get = ceetm_cls_get, |
| 5278 | + .put = ceetm_cls_put, |
| 5279 | + .change = ceetm_cls_change, |
| 5280 | + .delete = ceetm_cls_delete, |
| 5281 | + .walk = ceetm_cls_walk, |
| 5282 | + .tcf_chain = ceetm_tcf_chain, |
| 5283 | + .bind_tcf = ceetm_tcf_bind, |
| 5284 | + .unbind_tcf = ceetm_tcf_unbind, |
| 5285 | + .dump = ceetm_cls_dump, |
| 5286 | + .dump_stats = ceetm_cls_dump_stats, |
| 5287 | +}; |
| 5288 | + |
| 5289 | +struct Qdisc_ops ceetm_qdisc_ops __read_mostly = { |
| 5290 | + .id = "ceetm", |
| 5291 | + .priv_size = sizeof(struct ceetm_qdisc), |
| 5292 | + .cl_ops = &ceetm_cls_ops, |
| 5293 | + .init = ceetm_init, |
| 5294 | + .destroy = ceetm_destroy, |
| 5295 | + .change = ceetm_change, |
| 5296 | + .dump = ceetm_dump, |
| 5297 | + .attach = ceetm_attach, |
| 5298 | + .owner = THIS_MODULE, |
| 5299 | +}; |
| 5300 | + |
| 5301 | +/* Run the filters and classifiers attached to the qdisc on the provided skb */ |
| 5302 | +static struct ceetm_class *ceetm_classify(struct sk_buff *skb, |
| 5303 | + struct Qdisc *sch, int *qerr, |
| 5304 | + bool *act_drop) |
| 5305 | +{ |
| 5306 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 5307 | + struct ceetm_class *cl = NULL, *wbfs_cl; |
| 5308 | + struct tcf_result res; |
| 5309 | + struct tcf_proto *tcf; |
| 5310 | + int result; |
| 5311 | + |
| 5312 | + *qerr = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS; |
| 5313 | + tcf = priv->filter_list; |
| 5314 | + while (tcf && (result = tc_classify(skb, tcf, &res)) >= 0) { |
| 5315 | +#ifdef CONFIG_NET_CLS_ACT |
| 5316 | + switch (result) { |
| 5317 | + case TC_ACT_QUEUED: |
| 5318 | + case TC_ACT_STOLEN: |
| 5319 | + *qerr = NET_XMIT_SUCCESS | __NET_XMIT_STOLEN; |
| 5320 | + case TC_ACT_SHOT: |
| 5321 | + /* No valid class found due to action */ |
| 5322 | + *act_drop = true; |
| 5323 | + return NULL; |
| 5324 | + } |
| 5325 | +#endif |
| 5326 | + cl = (void *)res.class; |
| 5327 | + if (!cl) { |
| 5328 | + if (res.classid == sch->handle) { |
| 5329 | + /* The filter leads to the qdisc */ |
| 5330 | + /* TODO default qdisc */ |
| 5331 | + return NULL; |
| 5332 | + } |
| 5333 | + |
| 5334 | + cl = ceetm_find(res.classid, sch); |
| 5335 | + if (!cl) |
| 5336 | + /* The filter leads to an invalid class */ |
| 5337 | + break; |
| 5338 | + } |
| 5339 | + |
| 5340 | + /* The class might have its own filters attached */ |
| 5341 | + tcf = cl->filter_list; |
| 5342 | + } |
| 5343 | + |
| 5344 | + if (!cl) { |
| 5345 | + /* No valid class found */ |
| 5346 | + /* TODO default qdisc */ |
| 5347 | + return NULL; |
| 5348 | + } |
| 5349 | + |
| 5350 | + switch (cl->type) { |
| 5351 | + case CEETM_ROOT: |
| 5352 | + if (cl->root.child) { |
| 5353 | + /* Run the prio qdisc classifiers */ |
| 5354 | + return ceetm_classify(skb, cl->root.child, qerr, |
| 5355 | + act_drop); |
| 5356 | + } else { |
| 5357 | + /* The root class does not have a child prio qdisc */ |
| 5358 | + /* TODO default qdisc */ |
| 5359 | + return NULL; |
| 5360 | + } |
| 5361 | + case CEETM_PRIO: |
| 5362 | + if (cl->prio.child) { |
| 5363 | + /* If filters lead to a wbfs class, return it. |
| 5364 | + * Otherwise, return the prio class |
| 5365 | + */ |
| 5366 | + wbfs_cl = ceetm_classify(skb, cl->prio.child, qerr, |
| 5367 | + act_drop); |
| 5368 | + /* A NULL result might indicate either an erroneous |
| 5369 | + * filter, or no filters at all. We will assume the |
| 5370 | + * latter |
| 5371 | + */ |
| 5372 | + return wbfs_cl ? : cl; |
| 5373 | + } |
| 5374 | + } |
| 5375 | + |
| 5376 | + /* For wbfs and childless prio classes, return the class directly */ |
| 5377 | + return cl; |
| 5378 | +} |
| 5379 | + |
| 5380 | +int __hot ceetm_tx(struct sk_buff *skb, struct net_device *net_dev) |
| 5381 | +{ |
| 5382 | + int ret; |
| 5383 | + bool act_drop = false; |
| 5384 | + struct Qdisc *sch = net_dev->qdisc; |
| 5385 | + struct ceetm_class *cl; |
| 5386 | + struct dpa_priv_s *priv_dpa; |
| 5387 | + struct qman_fq *egress_fq, *conf_fq; |
| 5388 | + struct ceetm_qdisc *priv = qdisc_priv(sch); |
| 5389 | + struct ceetm_qdisc_stats *qstats = this_cpu_ptr(priv->root.qstats); |
| 5390 | + struct ceetm_class_stats *cstats; |
| 5391 | + const int queue_mapping = dpa_get_queue_mapping(skb); |
| 5392 | + spinlock_t *root_lock = qdisc_lock(sch); |
| 5393 | + |
| 5394 | + spin_lock(root_lock); |
| 5395 | + cl = ceetm_classify(skb, sch, &ret, &act_drop); |
| 5396 | + spin_unlock(root_lock); |
| 5397 | + |
| 5398 | +#ifdef CONFIG_NET_CLS_ACT |
| 5399 | + if (act_drop) { |
| 5400 | + if (ret & __NET_XMIT_BYPASS) |
| 5401 | + qstats->drops++; |
| 5402 | + goto drop; |
| 5403 | + } |
| 5404 | +#endif |
| 5405 | + /* TODO default class */ |
| 5406 | + if (unlikely(!cl)) { |
| 5407 | + qstats->drops++; |
| 5408 | + goto drop; |
| 5409 | + } |
| 5410 | + |
| 5411 | + priv_dpa = netdev_priv(net_dev); |
| 5412 | + conf_fq = priv_dpa->conf_fqs[queue_mapping]; |
| 5413 | + |
| 5414 | + /* Choose the proper tx fq and update the basic stats (bytes and |
| 5415 | + * packets sent by the class) |
| 5416 | + */ |
| 5417 | + switch (cl->type) { |
| 5418 | + case CEETM_PRIO: |
| 5419 | + egress_fq = &cl->prio.fq->fq; |
| 5420 | + cstats = this_cpu_ptr(cl->prio.cstats); |
| 5421 | + break; |
| 5422 | + case CEETM_WBFS: |
| 5423 | + egress_fq = &cl->wbfs.fq->fq; |
| 5424 | + cstats = this_cpu_ptr(cl->wbfs.cstats); |
| 5425 | + break; |
| 5426 | + default: |
| 5427 | + qstats->drops++; |
| 5428 | + goto drop; |
| 5429 | + } |
| 5430 | + |
| 5431 | + bstats_update(&cstats->bstats, skb); |
| 5432 | + return dpa_tx_extended(skb, net_dev, egress_fq, conf_fq); |
| 5433 | + |
| 5434 | +drop: |
| 5435 | + dev_kfree_skb_any(skb); |
| 5436 | + return NET_XMIT_SUCCESS; |
| 5437 | +} |
| 5438 | + |
| 5439 | +static int __init ceetm_register(void) |
| 5440 | +{ |
| 5441 | + int _errno = 0; |
| 5442 | + |
| 5443 | + pr_info(KBUILD_MODNAME ": " DPA_CEETM_DESCRIPTION "\n"); |
| 5444 | + |
| 5445 | + _errno = register_qdisc(&ceetm_qdisc_ops); |
| 5446 | + if (unlikely(_errno)) |
| 5447 | + pr_err(KBUILD_MODNAME |
| 5448 | + ": %s:%hu:%s(): register_qdisc() = %d\n", |
| 5449 | + KBUILD_BASENAME ".c", __LINE__, __func__, _errno); |
| 5450 | + |
| 5451 | + return _errno; |
| 5452 | +} |
| 5453 | + |
| 5454 | +static void __exit ceetm_unregister(void) |
| 5455 | +{ |
| 5456 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 5457 | + KBUILD_BASENAME ".c", __func__); |
| 5458 | + |
| 5459 | + unregister_qdisc(&ceetm_qdisc_ops); |
| 5460 | +} |
| 5461 | + |
| 5462 | +module_init(ceetm_register); |
| 5463 | +module_exit(ceetm_unregister); |
| 5464 | --- /dev/null |
| 5465 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h |
| 5466 | @@ -0,0 +1,236 @@ |
| 5467 | +/* Copyright 2008-2016 Freescale Semiconductor Inc. |
| 5468 | + * |
| 5469 | + * Redistribution and use in source and binary forms, with or without |
| 5470 | + * modification, are permitted provided that the following conditions are met: |
| 5471 | + * * Redistributions of source code must retain the above copyright |
| 5472 | + * notice, this list of conditions and the following disclaimer. |
| 5473 | + * * Redistributions in binary form must reproduce the above copyright |
| 5474 | + * notice, this list of conditions and the following disclaimer in the |
| 5475 | + * documentation and/or other materials provided with the distribution. |
| 5476 | + * * Neither the name of Freescale Semiconductor nor the |
| 5477 | + * names of its contributors may be used to endorse or promote products |
| 5478 | + * derived from this software without specific prior written permission. |
| 5479 | + * |
| 5480 | + * |
| 5481 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 5482 | + * GNU General Public License ("GPL") as published by the Free Software |
| 5483 | + * Foundation, either version 2 of that License or (at your option) any |
| 5484 | + * later version. |
| 5485 | + * |
| 5486 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 5487 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 5488 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 5489 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 5490 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 5491 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 5492 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 5493 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 5494 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 5495 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 5496 | + */ |
| 5497 | + |
| 5498 | +#ifndef __DPAA_ETH_CEETM_H |
| 5499 | +#define __DPAA_ETH_CEETM_H |
| 5500 | + |
| 5501 | +#include <net/pkt_sched.h> |
| 5502 | +#include <net/netlink.h> |
| 5503 | +#include <lnxwrp_fm.h> |
| 5504 | + |
| 5505 | +#include "mac.h" |
| 5506 | +#include "dpaa_eth_common.h" |
| 5507 | + |
| 5508 | +/* Mask to determine the sub-portal id from a channel number */ |
| 5509 | +#define CHANNEL_SP_MASK 0x1f |
| 5510 | +/* The number of the last channel that services DCP0, connected to FMan 0. |
| 5511 | + * Value validated for B4 and T series platforms. |
| 5512 | + */ |
| 5513 | +#define DCP0_MAX_CHANNEL 0x80f |
| 5514 | +/* A2V=1 - field A2 is valid |
| 5515 | + * A0V=1 - field A0 is valid - enables frame confirmation |
| 5516 | + * OVOM=1 - override operation mode bits with values from A2 |
| 5517 | + * EBD=1 - external buffers are deallocated at the end of the FMan flow |
| 5518 | + * NL=0 - the BMI releases all the internal buffers |
| 5519 | + */ |
| 5520 | +#define CEETM_CONTEXT_A 0x1a00000080000000 |
| 5521 | +/* The ratio between the superior and inferior congestion state thresholds. The |
| 5522 | + * lower threshold is set to 7/8 of the superior one (as the default for WQ |
| 5523 | + * scheduling). |
| 5524 | + */ |
| 5525 | +#define CEETM_CCGR_RATIO 0.875 |
| 5526 | +/* For functional purposes, there are num_tx_queues pfifo qdiscs through which |
| 5527 | + * frames reach the driver. Their handles start from 1:21. Handles 1:1 to 1:20 |
| 5528 | + * are reserved for the maximum 32 CEETM channels (majors and minors are in |
| 5529 | + * hex). |
| 5530 | + */ |
| 5531 | +#define PFIFO_MIN_OFFSET 0x21 |
| 5532 | + |
| 5533 | +/* A maximum of 8 CQs can be linked to a CQ channel or to a WBFS scheduler. */ |
| 5534 | +#define CEETM_MAX_PRIO_QCOUNT 8 |
| 5535 | +#define CEETM_MAX_WBFS_QCOUNT 8 |
| 5536 | +#define CEETM_MIN_WBFS_QCOUNT 4 |
| 5537 | + |
| 5538 | +/* The id offsets of the CQs belonging to WBFS groups (ids 8-11/15 for group A |
| 5539 | + * and/or 12-15 for group B). |
| 5540 | + */ |
| 5541 | +#define WBFS_GRP_A_OFFSET 8 |
| 5542 | +#define WBFS_GRP_B_OFFSET 12 |
| 5543 | + |
| 5544 | +#define WBFS_GRP_A 1 |
| 5545 | +#define WBFS_GRP_B 2 |
| 5546 | +#define WBFS_GRP_LARGE 3 |
| 5547 | + |
| 5548 | +enum { |
| 5549 | + TCA_CEETM_UNSPEC, |
| 5550 | + TCA_CEETM_COPT, |
| 5551 | + TCA_CEETM_QOPS, |
| 5552 | + __TCA_CEETM_MAX, |
| 5553 | +}; |
| 5554 | + |
| 5555 | +/* CEETM configuration types */ |
| 5556 | +enum { |
| 5557 | + CEETM_ROOT = 1, |
| 5558 | + CEETM_PRIO, |
| 5559 | + CEETM_WBFS |
| 5560 | +}; |
| 5561 | + |
| 5562 | +#define TCA_CEETM_MAX (__TCA_CEETM_MAX - 1) |
| 5563 | +extern const struct nla_policy ceetm_policy[TCA_CEETM_MAX + 1]; |
| 5564 | + |
| 5565 | +struct ceetm_class; |
| 5566 | +struct ceetm_qdisc_stats; |
| 5567 | +struct ceetm_class_stats; |
| 5568 | + |
| 5569 | +struct ceetm_fq { |
| 5570 | + struct qman_fq fq; |
| 5571 | + struct net_device *net_dev; |
| 5572 | + struct ceetm_class *ceetm_cls; |
| 5573 | +}; |
| 5574 | + |
| 5575 | +struct root_q { |
| 5576 | + struct Qdisc **qdiscs; |
| 5577 | + __u16 overhead; |
| 5578 | + __u32 rate; |
| 5579 | + __u32 ceil; |
| 5580 | + struct qm_ceetm_sp *sp; |
| 5581 | + struct qm_ceetm_lni *lni; |
| 5582 | + struct ceetm_qdisc_stats __percpu *qstats; |
| 5583 | +}; |
| 5584 | + |
| 5585 | +struct prio_q { |
| 5586 | + __u16 qcount; |
| 5587 | + struct ceetm_class *parent; |
| 5588 | +}; |
| 5589 | + |
| 5590 | +struct wbfs_q { |
| 5591 | + __u16 qcount; |
| 5592 | + int group_type; |
| 5593 | + struct ceetm_class *parent; |
| 5594 | + __u16 cr; |
| 5595 | + __u16 er; |
| 5596 | +}; |
| 5597 | + |
| 5598 | +struct ceetm_qdisc { |
| 5599 | + int type; /* LNI/CHNL/WBFS */ |
| 5600 | + bool shaped; |
| 5601 | + union { |
| 5602 | + struct root_q root; |
| 5603 | + struct prio_q prio; |
| 5604 | + struct wbfs_q wbfs; |
| 5605 | + }; |
| 5606 | + struct Qdisc_class_hash clhash; |
| 5607 | + struct tcf_proto *filter_list; /* qdisc attached filters */ |
| 5608 | +}; |
| 5609 | + |
| 5610 | +/* CEETM Qdisc configuration parameters */ |
| 5611 | +struct tc_ceetm_qopt { |
| 5612 | + __u32 type; |
| 5613 | + __u16 shaped; |
| 5614 | + __u16 qcount; |
| 5615 | + __u16 overhead; |
| 5616 | + __u32 rate; |
| 5617 | + __u32 ceil; |
| 5618 | + __u16 cr; |
| 5619 | + __u16 er; |
| 5620 | + __u8 qweight[CEETM_MAX_WBFS_QCOUNT]; |
| 5621 | +}; |
| 5622 | + |
| 5623 | +struct root_c { |
| 5624 | + unsigned int rate; |
| 5625 | + unsigned int ceil; |
| 5626 | + unsigned int tbl; |
| 5627 | + bool wbfs_grp_a; |
| 5628 | + bool wbfs_grp_b; |
| 5629 | + bool wbfs_grp_large; |
| 5630 | + struct Qdisc *child; |
| 5631 | + struct qm_ceetm_channel *ch; |
| 5632 | +}; |
| 5633 | + |
| 5634 | +struct prio_c { |
| 5635 | + bool cr; |
| 5636 | + bool er; |
| 5637 | + struct ceetm_fq *fq; /* Hardware FQ instance Handle */ |
| 5638 | + struct qm_ceetm_lfq *lfq; |
| 5639 | + struct qm_ceetm_cq *cq; /* Hardware Class Queue instance Handle */ |
| 5640 | + struct qm_ceetm_ccg *ccg; |
| 5641 | + /* only one wbfs can be linked to one priority CQ */ |
| 5642 | + struct Qdisc *child; |
| 5643 | + struct ceetm_class_stats __percpu *cstats; |
| 5644 | +}; |
| 5645 | + |
| 5646 | +struct wbfs_c { |
| 5647 | + __u8 weight; /* The weight of the class between 1 and 248 */ |
| 5648 | + struct ceetm_fq *fq; /* Hardware FQ instance Handle */ |
| 5649 | + struct qm_ceetm_lfq *lfq; |
| 5650 | + struct qm_ceetm_cq *cq; /* Hardware Class Queue instance Handle */ |
| 5651 | + struct qm_ceetm_ccg *ccg; |
| 5652 | + struct ceetm_class_stats __percpu *cstats; |
| 5653 | +}; |
| 5654 | + |
| 5655 | +struct ceetm_class { |
| 5656 | + struct Qdisc_class_common common; |
| 5657 | + int refcnt; /* usage count of this class */ |
| 5658 | + struct tcf_proto *filter_list; /* class attached filters */ |
| 5659 | + struct Qdisc *parent; |
| 5660 | + bool shaped; |
| 5661 | + int type; /* ROOT/PRIO/WBFS */ |
| 5662 | + union { |
| 5663 | + struct root_c root; |
| 5664 | + struct prio_c prio; |
| 5665 | + struct wbfs_c wbfs; |
| 5666 | + }; |
| 5667 | +}; |
| 5668 | + |
| 5669 | +/* CEETM Class configuration parameters */ |
| 5670 | +struct tc_ceetm_copt { |
| 5671 | + __u32 type; |
| 5672 | + __u16 shaped; |
| 5673 | + __u32 rate; |
| 5674 | + __u32 ceil; |
| 5675 | + __u16 tbl; |
| 5676 | + __u16 cr; |
| 5677 | + __u16 er; |
| 5678 | + __u8 weight; |
| 5679 | +}; |
| 5680 | + |
| 5681 | +/* CEETM stats */ |
| 5682 | +struct ceetm_qdisc_stats { |
| 5683 | + __u32 drops; |
| 5684 | +}; |
| 5685 | + |
| 5686 | +struct ceetm_class_stats { |
| 5687 | + /* Software counters */ |
| 5688 | + struct gnet_stats_basic_packed bstats; |
| 5689 | + __u32 ern_drop_count; |
| 5690 | + __u32 congested_count; |
| 5691 | +}; |
| 5692 | + |
| 5693 | +struct tc_ceetm_xstats { |
| 5694 | + __u32 ern_drop_count; |
| 5695 | + __u32 congested_count; |
| 5696 | + /* Hardware counters */ |
| 5697 | + __u64 frame_count; |
| 5698 | + __u64 byte_count; |
| 5699 | +}; |
| 5700 | + |
| 5701 | +int __hot ceetm_tx(struct sk_buff *skb, struct net_device *net_dev); |
| 5702 | +#endif |
| 5703 | --- /dev/null |
| 5704 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c |
| 5705 | @@ -0,0 +1,1812 @@ |
| 5706 | +/* Copyright 2008-2013 Freescale Semiconductor, Inc. |
| 5707 | + * |
| 5708 | + * Redistribution and use in source and binary forms, with or without |
| 5709 | + * modification, are permitted provided that the following conditions are met: |
| 5710 | + * * Redistributions of source code must retain the above copyright |
| 5711 | + * notice, this list of conditions and the following disclaimer. |
| 5712 | + * * Redistributions in binary form must reproduce the above copyright |
| 5713 | + * notice, this list of conditions and the following disclaimer in the |
| 5714 | + * documentation and/or other materials provided with the distribution. |
| 5715 | + * * Neither the name of Freescale Semiconductor nor the |
| 5716 | + * names of its contributors may be used to endorse or promote products |
| 5717 | + * derived from this software without specific prior written permission. |
| 5718 | + * |
| 5719 | + * |
| 5720 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 5721 | + * GNU General Public License ("GPL") as published by the Free Software |
| 5722 | + * Foundation, either version 2 of that License or (at your option) any |
| 5723 | + * later version. |
| 5724 | + * |
| 5725 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 5726 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 5727 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 5728 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 5729 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 5730 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 5731 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 5732 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 5733 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 5734 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 5735 | + */ |
| 5736 | + |
| 5737 | +#include <linux/init.h> |
| 5738 | +#include <linux/module.h> |
| 5739 | +#include <linux/of_platform.h> |
| 5740 | +#include <linux/of_net.h> |
| 5741 | +#include <linux/etherdevice.h> |
| 5742 | +#include <linux/kthread.h> |
| 5743 | +#include <linux/percpu.h> |
| 5744 | +#include <linux/highmem.h> |
| 5745 | +#include <linux/sort.h> |
| 5746 | +#include <linux/fsl_qman.h> |
| 5747 | +#include <linux/ip.h> |
| 5748 | +#include <linux/ipv6.h> |
| 5749 | +#include <linux/if_vlan.h> /* vlan_eth_hdr */ |
| 5750 | +#include "dpaa_eth.h" |
| 5751 | +#include "dpaa_eth_common.h" |
| 5752 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 5753 | +#include "dpaa_1588.h" |
| 5754 | +#endif |
| 5755 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 5756 | +#include "dpaa_debugfs.h" |
| 5757 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 5758 | +#include "mac.h" |
| 5759 | + |
| 5760 | +/* Size in bytes of the FQ taildrop threshold */ |
| 5761 | +#define DPA_FQ_TD 0x200000 |
| 5762 | + |
| 5763 | +#ifdef CONFIG_PTP_1588_CLOCK_DPAA |
| 5764 | +struct ptp_priv_s ptp_priv; |
| 5765 | +#endif |
| 5766 | + |
| 5767 | +static struct dpa_bp *dpa_bp_array[64]; |
| 5768 | + |
| 5769 | +int dpa_max_frm; |
| 5770 | +EXPORT_SYMBOL(dpa_max_frm); |
| 5771 | + |
| 5772 | +int dpa_rx_extra_headroom; |
| 5773 | +EXPORT_SYMBOL(dpa_rx_extra_headroom); |
| 5774 | + |
| 5775 | +int dpa_num_cpus = NR_CPUS; |
| 5776 | + |
| 5777 | +static const struct fqid_cell tx_confirm_fqids[] = { |
| 5778 | + {0, DPAA_ETH_TX_QUEUES} |
| 5779 | +}; |
| 5780 | + |
| 5781 | +static struct fqid_cell default_fqids[][3] = { |
| 5782 | + [RX] = { {0, 1}, {0, 1}, {0, DPAA_ETH_RX_QUEUES} }, |
| 5783 | + [TX] = { {0, 1}, {0, 1}, {0, DPAA_ETH_TX_QUEUES} } |
| 5784 | +}; |
| 5785 | + |
| 5786 | +static const char fsl_qman_frame_queues[][25] = { |
| 5787 | + [RX] = "fsl,qman-frame-queues-rx", |
| 5788 | + [TX] = "fsl,qman-frame-queues-tx" |
| 5789 | +}; |
| 5790 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 5791 | +/* A set of callbacks for hooking into the fastpath at different points. */ |
| 5792 | +struct dpaa_eth_hooks_s dpaa_eth_hooks; |
| 5793 | +EXPORT_SYMBOL(dpaa_eth_hooks); |
| 5794 | +/* This function should only be called on the probe paths, since it makes no |
| 5795 | + * effort to guarantee consistency of the destination hooks structure. |
| 5796 | + */ |
| 5797 | +void fsl_dpaa_eth_set_hooks(struct dpaa_eth_hooks_s *hooks) |
| 5798 | +{ |
| 5799 | + if (hooks) |
| 5800 | + dpaa_eth_hooks = *hooks; |
| 5801 | + else |
| 5802 | + pr_err("NULL pointer to hooks!\n"); |
| 5803 | +} |
| 5804 | +EXPORT_SYMBOL(fsl_dpaa_eth_set_hooks); |
| 5805 | +#endif |
| 5806 | + |
| 5807 | +int dpa_netdev_init(struct net_device *net_dev, |
| 5808 | + const uint8_t *mac_addr, |
| 5809 | + uint16_t tx_timeout) |
| 5810 | +{ |
| 5811 | + int err; |
| 5812 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 5813 | + struct device *dev = net_dev->dev.parent; |
| 5814 | + |
| 5815 | + net_dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
| 5816 | + |
| 5817 | + net_dev->features |= net_dev->hw_features; |
| 5818 | + net_dev->vlan_features = net_dev->features; |
| 5819 | + |
| 5820 | + memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len); |
| 5821 | + memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len); |
| 5822 | + |
| 5823 | + net_dev->ethtool_ops = &dpa_ethtool_ops; |
| 5824 | + |
| 5825 | + net_dev->needed_headroom = priv->tx_headroom; |
| 5826 | + net_dev->watchdog_timeo = msecs_to_jiffies(tx_timeout); |
| 5827 | + |
| 5828 | + err = register_netdev(net_dev); |
| 5829 | + if (err < 0) { |
| 5830 | + dev_err(dev, "register_netdev() = %d\n", err); |
| 5831 | + return err; |
| 5832 | + } |
| 5833 | + |
| 5834 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 5835 | + /* create debugfs entry for this net_device */ |
| 5836 | + err = dpa_netdev_debugfs_create(net_dev); |
| 5837 | + if (err) { |
| 5838 | + unregister_netdev(net_dev); |
| 5839 | + return err; |
| 5840 | + } |
| 5841 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 5842 | + |
| 5843 | + return 0; |
| 5844 | +} |
| 5845 | +EXPORT_SYMBOL(dpa_netdev_init); |
| 5846 | + |
| 5847 | +int __cold dpa_start(struct net_device *net_dev) |
| 5848 | +{ |
| 5849 | + int err, i; |
| 5850 | + struct dpa_priv_s *priv; |
| 5851 | + struct mac_device *mac_dev; |
| 5852 | + |
| 5853 | + priv = netdev_priv(net_dev); |
| 5854 | + mac_dev = priv->mac_dev; |
| 5855 | + |
| 5856 | + err = mac_dev->init_phy(net_dev, priv->mac_dev); |
| 5857 | + if (err < 0) { |
| 5858 | + if (netif_msg_ifup(priv)) |
| 5859 | + netdev_err(net_dev, "init_phy() = %d\n", err); |
| 5860 | + return err; |
| 5861 | + } |
| 5862 | + |
| 5863 | + for_each_port_device(i, mac_dev->port_dev) { |
| 5864 | + err = fm_port_enable(mac_dev->port_dev[i]); |
| 5865 | + if (err) |
| 5866 | + goto mac_start_failed; |
| 5867 | + } |
| 5868 | + |
| 5869 | + err = priv->mac_dev->start(mac_dev); |
| 5870 | + if (err < 0) { |
| 5871 | + if (netif_msg_ifup(priv)) |
| 5872 | + netdev_err(net_dev, "mac_dev->start() = %d\n", err); |
| 5873 | + goto mac_start_failed; |
| 5874 | + } |
| 5875 | + |
| 5876 | + netif_tx_start_all_queues(net_dev); |
| 5877 | + |
| 5878 | + return 0; |
| 5879 | + |
| 5880 | +mac_start_failed: |
| 5881 | + for_each_port_device(i, mac_dev->port_dev) |
| 5882 | + fm_port_disable(mac_dev->port_dev[i]); |
| 5883 | + |
| 5884 | + return err; |
| 5885 | +} |
| 5886 | +EXPORT_SYMBOL(dpa_start); |
| 5887 | + |
| 5888 | +int __cold dpa_stop(struct net_device *net_dev) |
| 5889 | +{ |
| 5890 | + int _errno, i, err; |
| 5891 | + struct dpa_priv_s *priv; |
| 5892 | + struct mac_device *mac_dev; |
| 5893 | + |
| 5894 | + priv = netdev_priv(net_dev); |
| 5895 | + mac_dev = priv->mac_dev; |
| 5896 | + |
| 5897 | + netif_tx_stop_all_queues(net_dev); |
| 5898 | + /* Allow the Fman (Tx) port to process in-flight frames before we |
| 5899 | + * try switching it off. |
| 5900 | + */ |
| 5901 | + usleep_range(5000, 10000); |
| 5902 | + |
| 5903 | + _errno = mac_dev->stop(mac_dev); |
| 5904 | + if (unlikely(_errno < 0)) |
| 5905 | + if (netif_msg_ifdown(priv)) |
| 5906 | + netdev_err(net_dev, "mac_dev->stop() = %d\n", |
| 5907 | + _errno); |
| 5908 | + |
| 5909 | + for_each_port_device(i, mac_dev->port_dev) { |
| 5910 | + err = fm_port_disable(mac_dev->port_dev[i]); |
| 5911 | + _errno = err ? err : _errno; |
| 5912 | + } |
| 5913 | + |
| 5914 | + if (mac_dev->phy_dev) |
| 5915 | + phy_disconnect(mac_dev->phy_dev); |
| 5916 | + mac_dev->phy_dev = NULL; |
| 5917 | + |
| 5918 | + return _errno; |
| 5919 | +} |
| 5920 | +EXPORT_SYMBOL(dpa_stop); |
| 5921 | + |
| 5922 | +void __cold dpa_timeout(struct net_device *net_dev) |
| 5923 | +{ |
| 5924 | + const struct dpa_priv_s *priv; |
| 5925 | + struct dpa_percpu_priv_s *percpu_priv; |
| 5926 | + |
| 5927 | + priv = netdev_priv(net_dev); |
| 5928 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 5929 | + |
| 5930 | + if (netif_msg_timer(priv)) |
| 5931 | + netdev_crit(net_dev, "Transmit timeout!\n"); |
| 5932 | + |
| 5933 | + percpu_priv->stats.tx_errors++; |
| 5934 | +} |
| 5935 | +EXPORT_SYMBOL(dpa_timeout); |
| 5936 | + |
| 5937 | +/* net_device */ |
| 5938 | + |
| 5939 | +/** |
| 5940 | + * @param net_dev the device for which statistics are calculated |
| 5941 | + * @param stats the function fills this structure with the device's statistics |
| 5942 | + * @return the address of the structure containing the statistics |
| 5943 | + * |
| 5944 | + * Calculates the statistics for the given device by adding the statistics |
| 5945 | + * collected by each CPU. |
| 5946 | + */ |
| 5947 | +void __cold |
| 5948 | +dpa_get_stats64(struct net_device *net_dev, |
| 5949 | + struct rtnl_link_stats64 *stats) |
| 5950 | +{ |
| 5951 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 5952 | + u64 *cpustats; |
| 5953 | + u64 *netstats = (u64 *)stats; |
| 5954 | + int i, j; |
| 5955 | + struct dpa_percpu_priv_s *percpu_priv; |
| 5956 | + int numstats = sizeof(struct rtnl_link_stats64) / sizeof(u64); |
| 5957 | + |
| 5958 | + for_each_possible_cpu(i) { |
| 5959 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 5960 | + |
| 5961 | + cpustats = (u64 *)&percpu_priv->stats; |
| 5962 | + |
| 5963 | + for (j = 0; j < numstats; j++) |
| 5964 | + netstats[j] += cpustats[j]; |
| 5965 | + } |
| 5966 | +} |
| 5967 | +EXPORT_SYMBOL(dpa_get_stats64); |
| 5968 | + |
| 5969 | +int dpa_change_mtu(struct net_device *net_dev, int new_mtu) |
| 5970 | +{ |
| 5971 | + const int max_mtu = dpa_get_max_mtu(); |
| 5972 | + |
| 5973 | + /* Make sure we don't exceed the Ethernet controller's MAXFRM */ |
| 5974 | + if (new_mtu < 68 || new_mtu > max_mtu) { |
| 5975 | + netdev_err(net_dev, "Invalid L3 mtu %d (must be between %d and %d).\n", |
| 5976 | + new_mtu, 68, max_mtu); |
| 5977 | + return -EINVAL; |
| 5978 | + } |
| 5979 | + net_dev->mtu = new_mtu; |
| 5980 | + |
| 5981 | + return 0; |
| 5982 | +} |
| 5983 | +EXPORT_SYMBOL(dpa_change_mtu); |
| 5984 | + |
| 5985 | +/* .ndo_init callback */ |
| 5986 | +int dpa_ndo_init(struct net_device *net_dev) |
| 5987 | +{ |
| 5988 | + /* If fsl_fm_max_frm is set to a higher value than the all-common 1500, |
| 5989 | + * we choose conservatively and let the user explicitly set a higher |
| 5990 | + * MTU via ifconfig. Otherwise, the user may end up with different MTUs |
| 5991 | + * in the same LAN. |
| 5992 | + * If on the other hand fsl_fm_max_frm has been chosen below 1500, |
| 5993 | + * start with the maximum allowed. |
| 5994 | + */ |
| 5995 | + int init_mtu = min(dpa_get_max_mtu(), ETH_DATA_LEN); |
| 5996 | + |
| 5997 | + pr_debug("Setting initial MTU on net device: %d\n", init_mtu); |
| 5998 | + net_dev->mtu = init_mtu; |
| 5999 | + |
| 6000 | + return 0; |
| 6001 | +} |
| 6002 | +EXPORT_SYMBOL(dpa_ndo_init); |
| 6003 | + |
| 6004 | +int dpa_set_features(struct net_device *dev, netdev_features_t features) |
| 6005 | +{ |
| 6006 | + /* Not much to do here for now */ |
| 6007 | + dev->features = features; |
| 6008 | + return 0; |
| 6009 | +} |
| 6010 | +EXPORT_SYMBOL(dpa_set_features); |
| 6011 | + |
| 6012 | +netdev_features_t dpa_fix_features(struct net_device *dev, |
| 6013 | + netdev_features_t features) |
| 6014 | +{ |
| 6015 | + netdev_features_t unsupported_features = 0; |
| 6016 | + |
| 6017 | + /* In theory we should never be requested to enable features that |
| 6018 | + * we didn't set in netdev->features and netdev->hw_features at probe |
| 6019 | + * time, but double check just to be on the safe side. |
| 6020 | + * We don't support enabling Rx csum through ethtool yet |
| 6021 | + */ |
| 6022 | + unsupported_features |= NETIF_F_RXCSUM; |
| 6023 | + |
| 6024 | + features &= ~unsupported_features; |
| 6025 | + |
| 6026 | + return features; |
| 6027 | +} |
| 6028 | +EXPORT_SYMBOL(dpa_fix_features); |
| 6029 | + |
| 6030 | +#ifdef CONFIG_FSL_DPAA_TS |
| 6031 | +u64 dpa_get_timestamp_ns(const struct dpa_priv_s *priv, enum port_type rx_tx, |
| 6032 | + const void *data) |
| 6033 | +{ |
| 6034 | + u64 *ts, ns; |
| 6035 | + |
| 6036 | + ts = fm_port_get_buffer_time_stamp(priv->mac_dev->port_dev[rx_tx], |
| 6037 | + data); |
| 6038 | + |
| 6039 | + if (!ts || *ts == 0) |
| 6040 | + return 0; |
| 6041 | + |
| 6042 | + be64_to_cpus(ts); |
| 6043 | + |
| 6044 | + /* multiple DPA_PTP_NOMINAL_FREQ_PERIOD_NS for case of non power of 2 */ |
| 6045 | + ns = *ts << DPA_PTP_NOMINAL_FREQ_PERIOD_SHIFT; |
| 6046 | + |
| 6047 | + return ns; |
| 6048 | +} |
| 6049 | + |
| 6050 | +int dpa_get_ts(const struct dpa_priv_s *priv, enum port_type rx_tx, |
| 6051 | + struct skb_shared_hwtstamps *shhwtstamps, const void *data) |
| 6052 | +{ |
| 6053 | + u64 ns; |
| 6054 | + |
| 6055 | + ns = dpa_get_timestamp_ns(priv, rx_tx, data); |
| 6056 | + |
| 6057 | + if (ns == 0) |
| 6058 | + return -EINVAL; |
| 6059 | + |
| 6060 | + memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
| 6061 | + shhwtstamps->hwtstamp = ns_to_ktime(ns); |
| 6062 | + |
| 6063 | + return 0; |
| 6064 | +} |
| 6065 | + |
| 6066 | +static void dpa_ts_tx_enable(struct net_device *dev) |
| 6067 | +{ |
| 6068 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 6069 | + struct mac_device *mac_dev = priv->mac_dev; |
| 6070 | + |
| 6071 | + if (mac_dev->fm_rtc_enable) |
| 6072 | + mac_dev->fm_rtc_enable(get_fm_handle(dev)); |
| 6073 | + if (mac_dev->ptp_enable) |
| 6074 | + mac_dev->ptp_enable(mac_dev->get_mac_handle(mac_dev)); |
| 6075 | + |
| 6076 | + priv->ts_tx_en = true; |
| 6077 | +} |
| 6078 | + |
| 6079 | +static void dpa_ts_tx_disable(struct net_device *dev) |
| 6080 | +{ |
| 6081 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 6082 | + |
| 6083 | +#if 0 |
| 6084 | +/* the RTC might be needed by the Rx Ts, cannot disable here |
| 6085 | + * no separate ptp_disable API for Rx/Tx, cannot disable here |
| 6086 | + */ |
| 6087 | + struct mac_device *mac_dev = priv->mac_dev; |
| 6088 | + |
| 6089 | + if (mac_dev->fm_rtc_disable) |
| 6090 | + mac_dev->fm_rtc_disable(get_fm_handle(dev)); |
| 6091 | + |
| 6092 | + if (mac_dev->ptp_disable) |
| 6093 | + mac_dev->ptp_disable(mac_dev->get_mac_handle(mac_dev)); |
| 6094 | +#endif |
| 6095 | + |
| 6096 | + priv->ts_tx_en = false; |
| 6097 | +} |
| 6098 | + |
| 6099 | +static void dpa_ts_rx_enable(struct net_device *dev) |
| 6100 | +{ |
| 6101 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 6102 | + struct mac_device *mac_dev = priv->mac_dev; |
| 6103 | + |
| 6104 | + if (mac_dev->fm_rtc_enable) |
| 6105 | + mac_dev->fm_rtc_enable(get_fm_handle(dev)); |
| 6106 | + if (mac_dev->ptp_enable) |
| 6107 | + mac_dev->ptp_enable(mac_dev->get_mac_handle(mac_dev)); |
| 6108 | + |
| 6109 | + priv->ts_rx_en = true; |
| 6110 | +} |
| 6111 | + |
| 6112 | +static void dpa_ts_rx_disable(struct net_device *dev) |
| 6113 | +{ |
| 6114 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 6115 | + |
| 6116 | +#if 0 |
| 6117 | +/* the RTC might be needed by the Tx Ts, cannot disable here |
| 6118 | + * no separate ptp_disable API for Rx/Tx, cannot disable here |
| 6119 | + */ |
| 6120 | + struct mac_device *mac_dev = priv->mac_dev; |
| 6121 | + |
| 6122 | + if (mac_dev->fm_rtc_disable) |
| 6123 | + mac_dev->fm_rtc_disable(get_fm_handle(dev)); |
| 6124 | + |
| 6125 | + if (mac_dev->ptp_disable) |
| 6126 | + mac_dev->ptp_disable(mac_dev->get_mac_handle(mac_dev)); |
| 6127 | +#endif |
| 6128 | + |
| 6129 | + priv->ts_rx_en = false; |
| 6130 | +} |
| 6131 | + |
| 6132 | +static int dpa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 6133 | +{ |
| 6134 | + struct hwtstamp_config config; |
| 6135 | + |
| 6136 | + if (copy_from_user(&config, rq->ifr_data, sizeof(config))) |
| 6137 | + return -EFAULT; |
| 6138 | + |
| 6139 | + switch (config.tx_type) { |
| 6140 | + case HWTSTAMP_TX_OFF: |
| 6141 | + dpa_ts_tx_disable(dev); |
| 6142 | + break; |
| 6143 | + case HWTSTAMP_TX_ON: |
| 6144 | + dpa_ts_tx_enable(dev); |
| 6145 | + break; |
| 6146 | + default: |
| 6147 | + return -ERANGE; |
| 6148 | + } |
| 6149 | + |
| 6150 | + if (config.rx_filter == HWTSTAMP_FILTER_NONE) |
| 6151 | + dpa_ts_rx_disable(dev); |
| 6152 | + else { |
| 6153 | + dpa_ts_rx_enable(dev); |
| 6154 | + /* TS is set for all frame types, not only those requested */ |
| 6155 | + config.rx_filter = HWTSTAMP_FILTER_ALL; |
| 6156 | + } |
| 6157 | + |
| 6158 | + return copy_to_user(rq->ifr_data, &config, sizeof(config)) ? |
| 6159 | + -EFAULT : 0; |
| 6160 | +} |
| 6161 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 6162 | + |
| 6163 | +int dpa_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 6164 | +{ |
| 6165 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 6166 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 6167 | +#endif |
| 6168 | + int ret = 0; |
| 6169 | + |
| 6170 | + /* at least one timestamping feature must be enabled */ |
| 6171 | +#ifdef CONFIG_FSL_DPAA_TS |
| 6172 | + if (!netif_running(dev)) |
| 6173 | +#endif |
| 6174 | + return -EINVAL; |
| 6175 | + |
| 6176 | +#ifdef CONFIG_FSL_DPAA_TS |
| 6177 | + if (cmd == SIOCSHWTSTAMP) |
| 6178 | + return dpa_ts_ioctl(dev, rq, cmd); |
| 6179 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 6180 | + |
| 6181 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 6182 | + if ((cmd >= PTP_ENBL_TXTS_IOCTL) && (cmd <= PTP_CLEANUP_TS)) { |
| 6183 | + if (priv->tsu && priv->tsu->valid) |
| 6184 | + ret = dpa_ioctl_1588(dev, rq, cmd); |
| 6185 | + else |
| 6186 | + ret = -ENODEV; |
| 6187 | + } |
| 6188 | +#endif |
| 6189 | + |
| 6190 | + return ret; |
| 6191 | +} |
| 6192 | +EXPORT_SYMBOL(dpa_ioctl); |
| 6193 | + |
| 6194 | +int __cold dpa_remove(struct platform_device *of_dev) |
| 6195 | +{ |
| 6196 | + int err; |
| 6197 | + struct device *dev; |
| 6198 | + struct net_device *net_dev; |
| 6199 | + struct dpa_priv_s *priv; |
| 6200 | + |
| 6201 | + dev = &of_dev->dev; |
| 6202 | + net_dev = dev_get_drvdata(dev); |
| 6203 | + |
| 6204 | + priv = netdev_priv(net_dev); |
| 6205 | + |
| 6206 | + dpaa_eth_sysfs_remove(dev); |
| 6207 | + |
| 6208 | + dev_set_drvdata(dev, NULL); |
| 6209 | + unregister_netdev(net_dev); |
| 6210 | + |
| 6211 | + err = dpa_fq_free(dev, &priv->dpa_fq_list); |
| 6212 | + |
| 6213 | + qman_delete_cgr_safe(&priv->ingress_cgr); |
| 6214 | + qman_release_cgrid(priv->ingress_cgr.cgrid); |
| 6215 | + qman_delete_cgr_safe(&priv->cgr_data.cgr); |
| 6216 | + qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
| 6217 | + |
| 6218 | + dpa_private_napi_del(net_dev); |
| 6219 | + |
| 6220 | + dpa_bp_free(priv); |
| 6221 | + |
| 6222 | + if (priv->buf_layout) |
| 6223 | + devm_kfree(dev, priv->buf_layout); |
| 6224 | + |
| 6225 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 6226 | + /* remove debugfs entry for this net_device */ |
| 6227 | + dpa_netdev_debugfs_remove(net_dev); |
| 6228 | +#endif /* CONFIG_FSL_DPAA_DBG_LOOP */ |
| 6229 | + |
| 6230 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 6231 | + if (priv->tsu && priv->tsu->valid) |
| 6232 | + dpa_ptp_cleanup(priv); |
| 6233 | +#endif |
| 6234 | + |
| 6235 | + free_netdev(net_dev); |
| 6236 | + |
| 6237 | + return err; |
| 6238 | +} |
| 6239 | +EXPORT_SYMBOL(dpa_remove); |
| 6240 | + |
| 6241 | +struct mac_device * __cold __must_check |
| 6242 | +__attribute__((nonnull)) |
| 6243 | +dpa_mac_probe(struct platform_device *_of_dev) |
| 6244 | +{ |
| 6245 | + struct device *dpa_dev, *dev; |
| 6246 | + struct device_node *mac_node; |
| 6247 | + struct platform_device *of_dev; |
| 6248 | + struct mac_device *mac_dev; |
| 6249 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 6250 | + int lenp; |
| 6251 | + const phandle *phandle_prop; |
| 6252 | + struct net_device *net_dev = NULL; |
| 6253 | + struct dpa_priv_s *priv = NULL; |
| 6254 | + struct device_node *timer_node; |
| 6255 | +#endif |
| 6256 | + dpa_dev = &_of_dev->dev; |
| 6257 | + |
| 6258 | + mac_node = of_parse_phandle(_of_dev->dev.of_node, "fsl,fman-mac", 0); |
| 6259 | + if (unlikely(mac_node == NULL)) { |
| 6260 | + dev_err(dpa_dev, "Cannot find MAC device device tree node\n"); |
| 6261 | + return ERR_PTR(-EFAULT); |
| 6262 | + } |
| 6263 | + |
| 6264 | + of_dev = of_find_device_by_node(mac_node); |
| 6265 | + if (unlikely(of_dev == NULL)) { |
| 6266 | + dev_err(dpa_dev, "of_find_device_by_node(%s) failed\n", |
| 6267 | + mac_node->full_name); |
| 6268 | + of_node_put(mac_node); |
| 6269 | + return ERR_PTR(-EINVAL); |
| 6270 | + } |
| 6271 | + of_node_put(mac_node); |
| 6272 | + |
| 6273 | + dev = &of_dev->dev; |
| 6274 | + |
| 6275 | + mac_dev = dev_get_drvdata(dev); |
| 6276 | + if (unlikely(mac_dev == NULL)) { |
| 6277 | + dev_err(dpa_dev, "dev_get_drvdata(%s) failed\n", |
| 6278 | + dev_name(dev)); |
| 6279 | + return ERR_PTR(-EINVAL); |
| 6280 | + } |
| 6281 | + |
| 6282 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 6283 | + phandle_prop = of_get_property(mac_node, "ptimer-handle", &lenp); |
| 6284 | + if (phandle_prop && ((mac_dev->phy_if != PHY_INTERFACE_MODE_SGMII) || |
| 6285 | + ((mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII) && |
| 6286 | + (mac_dev->speed == SPEED_1000)))) { |
| 6287 | + timer_node = of_find_node_by_phandle(*phandle_prop); |
| 6288 | + if (timer_node) |
| 6289 | + net_dev = dev_get_drvdata(dpa_dev); |
| 6290 | + if (timer_node && net_dev) { |
| 6291 | + priv = netdev_priv(net_dev); |
| 6292 | + if (!dpa_ptp_init(priv)) |
| 6293 | + dev_info(dev, "%s: ptp 1588 is initialized.\n", |
| 6294 | + mac_node->full_name); |
| 6295 | + } |
| 6296 | + } |
| 6297 | +#endif |
| 6298 | + |
| 6299 | +#ifdef CONFIG_PTP_1588_CLOCK_DPAA |
| 6300 | + if ((mac_dev->phy_if != PHY_INTERFACE_MODE_SGMII) || |
| 6301 | + ((mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII) && |
| 6302 | + (mac_dev->speed == SPEED_1000))) { |
| 6303 | + ptp_priv.node = of_parse_phandle(mac_node, "ptimer-handle", 0); |
| 6304 | + if (ptp_priv.node) { |
| 6305 | + ptp_priv.of_dev = of_find_device_by_node(ptp_priv.node); |
| 6306 | + if (unlikely(ptp_priv.of_dev == NULL)) { |
| 6307 | + dev_err(dpa_dev, |
| 6308 | + "Cannot find device represented by timer_node\n"); |
| 6309 | + of_node_put(ptp_priv.node); |
| 6310 | + return ERR_PTR(-EINVAL); |
| 6311 | + } |
| 6312 | + ptp_priv.mac_dev = mac_dev; |
| 6313 | + } |
| 6314 | + } |
| 6315 | +#endif |
| 6316 | + return mac_dev; |
| 6317 | +} |
| 6318 | +EXPORT_SYMBOL(dpa_mac_probe); |
| 6319 | + |
| 6320 | +int dpa_set_mac_address(struct net_device *net_dev, void *addr) |
| 6321 | +{ |
| 6322 | + const struct dpa_priv_s *priv; |
| 6323 | + int _errno; |
| 6324 | + struct mac_device *mac_dev; |
| 6325 | + |
| 6326 | + priv = netdev_priv(net_dev); |
| 6327 | + |
| 6328 | + _errno = eth_mac_addr(net_dev, addr); |
| 6329 | + if (_errno < 0) { |
| 6330 | + if (netif_msg_drv(priv)) |
| 6331 | + netdev_err(net_dev, |
| 6332 | + "eth_mac_addr() = %d\n", |
| 6333 | + _errno); |
| 6334 | + return _errno; |
| 6335 | + } |
| 6336 | + |
| 6337 | + mac_dev = priv->mac_dev; |
| 6338 | + |
| 6339 | + _errno = mac_dev->change_addr(mac_dev->get_mac_handle(mac_dev), |
| 6340 | + net_dev->dev_addr); |
| 6341 | + if (_errno < 0) { |
| 6342 | + if (netif_msg_drv(priv)) |
| 6343 | + netdev_err(net_dev, |
| 6344 | + "mac_dev->change_addr() = %d\n", |
| 6345 | + _errno); |
| 6346 | + return _errno; |
| 6347 | + } |
| 6348 | + |
| 6349 | + return 0; |
| 6350 | +} |
| 6351 | +EXPORT_SYMBOL(dpa_set_mac_address); |
| 6352 | + |
| 6353 | +void dpa_set_rx_mode(struct net_device *net_dev) |
| 6354 | +{ |
| 6355 | + int _errno; |
| 6356 | + const struct dpa_priv_s *priv; |
| 6357 | + |
| 6358 | + priv = netdev_priv(net_dev); |
| 6359 | + |
| 6360 | + if (!!(net_dev->flags & IFF_PROMISC) != priv->mac_dev->promisc) { |
| 6361 | + priv->mac_dev->promisc = !priv->mac_dev->promisc; |
| 6362 | + _errno = priv->mac_dev->set_promisc( |
| 6363 | + priv->mac_dev->get_mac_handle(priv->mac_dev), |
| 6364 | + priv->mac_dev->promisc); |
| 6365 | + if (unlikely(_errno < 0) && netif_msg_drv(priv)) |
| 6366 | + netdev_err(net_dev, |
| 6367 | + "mac_dev->set_promisc() = %d\n", |
| 6368 | + _errno); |
| 6369 | + } |
| 6370 | + |
| 6371 | + _errno = priv->mac_dev->set_multi(net_dev, priv->mac_dev); |
| 6372 | + if (unlikely(_errno < 0) && netif_msg_drv(priv)) |
| 6373 | + netdev_err(net_dev, "mac_dev->set_multi() = %d\n", _errno); |
| 6374 | +} |
| 6375 | +EXPORT_SYMBOL(dpa_set_rx_mode); |
| 6376 | + |
| 6377 | +void dpa_set_buffers_layout(struct mac_device *mac_dev, |
| 6378 | + struct dpa_buffer_layout_s *layout) |
| 6379 | +{ |
| 6380 | + struct fm_port_params params; |
| 6381 | + |
| 6382 | + /* Rx */ |
| 6383 | + layout[RX].priv_data_size = (uint16_t)DPA_RX_PRIV_DATA_SIZE; |
| 6384 | + layout[RX].parse_results = true; |
| 6385 | + layout[RX].hash_results = true; |
| 6386 | +#ifdef CONFIG_FSL_DPAA_TS |
| 6387 | + layout[RX].time_stamp = true; |
| 6388 | +#endif |
| 6389 | + fm_port_get_buff_layout_ext_params(mac_dev->port_dev[RX], ¶ms); |
| 6390 | + layout[RX].manip_extra_space = params.manip_extra_space; |
| 6391 | + /* a value of zero for data alignment means "don't care", so align to |
| 6392 | + * a non-zero value to prevent FMD from using its own default |
| 6393 | + */ |
| 6394 | + layout[RX].data_align = params.data_align ? : DPA_FD_DATA_ALIGNMENT; |
| 6395 | + |
| 6396 | + /* Tx */ |
| 6397 | + layout[TX].priv_data_size = DPA_TX_PRIV_DATA_SIZE; |
| 6398 | + layout[TX].parse_results = true; |
| 6399 | + layout[TX].hash_results = true; |
| 6400 | +#ifdef CONFIG_FSL_DPAA_TS |
| 6401 | + layout[TX].time_stamp = true; |
| 6402 | +#endif |
| 6403 | + fm_port_get_buff_layout_ext_params(mac_dev->port_dev[TX], ¶ms); |
| 6404 | + layout[TX].manip_extra_space = params.manip_extra_space; |
| 6405 | + layout[TX].data_align = params.data_align ? : DPA_FD_DATA_ALIGNMENT; |
| 6406 | +} |
| 6407 | +EXPORT_SYMBOL(dpa_set_buffers_layout); |
| 6408 | + |
| 6409 | +int __attribute__((nonnull)) |
| 6410 | +dpa_bp_alloc(struct dpa_bp *dpa_bp) |
| 6411 | +{ |
| 6412 | + int err; |
| 6413 | + struct bman_pool_params bp_params; |
| 6414 | + struct platform_device *pdev; |
| 6415 | + |
| 6416 | + if (dpa_bp->size == 0 || dpa_bp->config_count == 0) { |
| 6417 | + pr_err("Buffer pool is not properly initialized! Missing size or initial number of buffers"); |
| 6418 | + return -EINVAL; |
| 6419 | + } |
| 6420 | + |
| 6421 | + memset(&bp_params, 0, sizeof(struct bman_pool_params)); |
| 6422 | +#ifdef CONFIG_FMAN_PFC |
| 6423 | + bp_params.flags = BMAN_POOL_FLAG_THRESH; |
| 6424 | + bp_params.thresholds[0] = bp_params.thresholds[2] = |
| 6425 | + CONFIG_FSL_DPAA_ETH_REFILL_THRESHOLD; |
| 6426 | + bp_params.thresholds[1] = bp_params.thresholds[3] = |
| 6427 | + CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT; |
| 6428 | +#endif |
| 6429 | + |
| 6430 | + /* If the pool is already specified, we only create one per bpid */ |
| 6431 | + if (dpa_bpid2pool_use(dpa_bp->bpid)) |
| 6432 | + return 0; |
| 6433 | + |
| 6434 | + if (dpa_bp->bpid == 0) |
| 6435 | + bp_params.flags |= BMAN_POOL_FLAG_DYNAMIC_BPID; |
| 6436 | + else |
| 6437 | + bp_params.bpid = dpa_bp->bpid; |
| 6438 | + |
| 6439 | + dpa_bp->pool = bman_new_pool(&bp_params); |
| 6440 | + if (unlikely(dpa_bp->pool == NULL)) { |
| 6441 | + pr_err("bman_new_pool() failed\n"); |
| 6442 | + return -ENODEV; |
| 6443 | + } |
| 6444 | + |
| 6445 | + dpa_bp->bpid = (uint8_t)bman_get_params(dpa_bp->pool)->bpid; |
| 6446 | + |
| 6447 | + pdev = platform_device_register_simple("dpaa_eth_bpool", |
| 6448 | + dpa_bp->bpid, NULL, 0); |
| 6449 | + if (IS_ERR(pdev)) { |
| 6450 | + pr_err("platform_device_register_simple() failed\n"); |
| 6451 | + err = PTR_ERR(pdev); |
| 6452 | + goto pdev_register_failed; |
| 6453 | + } |
| 6454 | + { |
| 6455 | + struct dma_map_ops *ops = get_dma_ops(&pdev->dev); |
| 6456 | + ops->dma_supported = NULL; |
| 6457 | + } |
| 6458 | + err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); |
| 6459 | + if (err) { |
| 6460 | + pr_err("dma_coerce_mask_and_coherent() failed\n"); |
| 6461 | + goto pdev_mask_failed; |
| 6462 | + } |
| 6463 | +#ifdef CONFIG_FMAN_ARM |
| 6464 | + /* force coherency */ |
| 6465 | + pdev->dev.archdata.dma_coherent = true; |
| 6466 | + arch_setup_dma_ops(&pdev->dev, 0, 0, NULL, true); |
| 6467 | +#endif |
| 6468 | + |
| 6469 | + dpa_bp->dev = &pdev->dev; |
| 6470 | + |
| 6471 | + if (dpa_bp->seed_cb) { |
| 6472 | + err = dpa_bp->seed_cb(dpa_bp); |
| 6473 | + if (err) |
| 6474 | + goto pool_seed_failed; |
| 6475 | + } |
| 6476 | + |
| 6477 | + dpa_bpid2pool_map(dpa_bp->bpid, dpa_bp); |
| 6478 | + |
| 6479 | + return 0; |
| 6480 | + |
| 6481 | +pool_seed_failed: |
| 6482 | +pdev_mask_failed: |
| 6483 | + platform_device_unregister(pdev); |
| 6484 | +pdev_register_failed: |
| 6485 | + bman_free_pool(dpa_bp->pool); |
| 6486 | + |
| 6487 | + return err; |
| 6488 | +} |
| 6489 | +EXPORT_SYMBOL(dpa_bp_alloc); |
| 6490 | + |
| 6491 | +void dpa_bp_drain(struct dpa_bp *bp) |
| 6492 | +{ |
| 6493 | + int ret, num = 8; |
| 6494 | + |
| 6495 | + do { |
| 6496 | + struct bm_buffer bmb[8]; |
| 6497 | + int i; |
| 6498 | + |
| 6499 | + ret = bman_acquire(bp->pool, bmb, num, 0); |
| 6500 | + if (ret < 0) { |
| 6501 | + if (num == 8) { |
| 6502 | + /* we have less than 8 buffers left; |
| 6503 | + * drain them one by one |
| 6504 | + */ |
| 6505 | + num = 1; |
| 6506 | + ret = 1; |
| 6507 | + continue; |
| 6508 | + } else { |
| 6509 | + /* Pool is fully drained */ |
| 6510 | + break; |
| 6511 | + } |
| 6512 | + } |
| 6513 | + |
| 6514 | + for (i = 0; i < num; i++) { |
| 6515 | + dma_addr_t addr = bm_buf_addr(&bmb[i]); |
| 6516 | + |
| 6517 | + dma_unmap_single(bp->dev, addr, bp->size, |
| 6518 | + DMA_BIDIRECTIONAL); |
| 6519 | + |
| 6520 | + bp->free_buf_cb(phys_to_virt(addr)); |
| 6521 | + } |
| 6522 | + } while (ret > 0); |
| 6523 | +} |
| 6524 | +EXPORT_SYMBOL(dpa_bp_drain); |
| 6525 | + |
| 6526 | +static void __cold __attribute__((nonnull)) |
| 6527 | +_dpa_bp_free(struct dpa_bp *dpa_bp) |
| 6528 | +{ |
| 6529 | + struct dpa_bp *bp = dpa_bpid2pool(dpa_bp->bpid); |
| 6530 | + |
| 6531 | + /* the mapping between bpid and dpa_bp is done very late in the |
| 6532 | + * allocation procedure; if something failed before the mapping, the bp |
| 6533 | + * was not configured, therefore we don't need the below instructions |
| 6534 | + */ |
| 6535 | + if (!bp) |
| 6536 | + return; |
| 6537 | + |
| 6538 | + if (!atomic_dec_and_test(&bp->refs)) |
| 6539 | + return; |
| 6540 | + |
| 6541 | + if (bp->free_buf_cb) |
| 6542 | + dpa_bp_drain(bp); |
| 6543 | + |
| 6544 | + dpa_bp_array[bp->bpid] = NULL; |
| 6545 | + bman_free_pool(bp->pool); |
| 6546 | + |
| 6547 | + if (bp->dev) |
| 6548 | + platform_device_unregister(to_platform_device(bp->dev)); |
| 6549 | +} |
| 6550 | + |
| 6551 | +void __cold __attribute__((nonnull)) |
| 6552 | +dpa_bp_free(struct dpa_priv_s *priv) |
| 6553 | +{ |
| 6554 | + int i; |
| 6555 | + |
| 6556 | + if (priv->dpa_bp) |
| 6557 | + for (i = 0; i < priv->bp_count; i++) |
| 6558 | + _dpa_bp_free(&priv->dpa_bp[i]); |
| 6559 | +} |
| 6560 | +EXPORT_SYMBOL(dpa_bp_free); |
| 6561 | + |
| 6562 | +struct dpa_bp *dpa_bpid2pool(int bpid) |
| 6563 | +{ |
| 6564 | + return dpa_bp_array[bpid]; |
| 6565 | +} |
| 6566 | +EXPORT_SYMBOL(dpa_bpid2pool); |
| 6567 | + |
| 6568 | +void dpa_bpid2pool_map(int bpid, struct dpa_bp *dpa_bp) |
| 6569 | +{ |
| 6570 | + dpa_bp_array[bpid] = dpa_bp; |
| 6571 | + atomic_set(&dpa_bp->refs, 1); |
| 6572 | +} |
| 6573 | + |
| 6574 | +bool dpa_bpid2pool_use(int bpid) |
| 6575 | +{ |
| 6576 | + if (dpa_bpid2pool(bpid)) { |
| 6577 | + atomic_inc(&dpa_bp_array[bpid]->refs); |
| 6578 | + return true; |
| 6579 | + } |
| 6580 | + |
| 6581 | + return false; |
| 6582 | +} |
| 6583 | + |
| 6584 | +#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 6585 | +u16 dpa_select_queue(struct net_device *net_dev, struct sk_buff *skb, |
| 6586 | + struct net_device *sb_dev, |
| 6587 | + select_queue_fallback_t fallback) |
| 6588 | +{ |
| 6589 | + return dpa_get_queue_mapping(skb); |
| 6590 | +} |
| 6591 | +EXPORT_SYMBOL(dpa_select_queue); |
| 6592 | +#endif |
| 6593 | + |
| 6594 | +struct dpa_fq *dpa_fq_alloc(struct device *dev, |
| 6595 | + u32 fq_start, |
| 6596 | + u32 fq_count, |
| 6597 | + struct list_head *list, |
| 6598 | + enum dpa_fq_type fq_type) |
| 6599 | +{ |
| 6600 | + int i; |
| 6601 | + struct dpa_fq *dpa_fq; |
| 6602 | + |
| 6603 | + dpa_fq = devm_kzalloc(dev, sizeof(*dpa_fq) * fq_count, GFP_KERNEL); |
| 6604 | + if (dpa_fq == NULL) |
| 6605 | + return NULL; |
| 6606 | + |
| 6607 | + for (i = 0; i < fq_count; i++) { |
| 6608 | + dpa_fq[i].fq_type = fq_type; |
| 6609 | + if (fq_type == FQ_TYPE_RX_PCD_HI_PRIO) |
| 6610 | + dpa_fq[i].fqid = fq_start ? |
| 6611 | + DPAA_ETH_FQ_DELTA + fq_start + i : 0; |
| 6612 | + else |
| 6613 | + dpa_fq[i].fqid = fq_start ? fq_start + i : 0; |
| 6614 | + |
| 6615 | + list_add_tail(&dpa_fq[i].list, list); |
| 6616 | + } |
| 6617 | + |
| 6618 | +#ifdef CONFIG_FMAN_PFC |
| 6619 | + if (fq_type == FQ_TYPE_TX) |
| 6620 | + for (i = 0; i < fq_count; i++) |
| 6621 | + dpa_fq[i].wq = i / dpa_num_cpus; |
| 6622 | + else |
| 6623 | +#endif |
| 6624 | + for (i = 0; i < fq_count; i++) |
| 6625 | + _dpa_assign_wq(dpa_fq + i); |
| 6626 | + |
| 6627 | + return dpa_fq; |
| 6628 | +} |
| 6629 | +EXPORT_SYMBOL(dpa_fq_alloc); |
| 6630 | + |
| 6631 | +/* Probing of FQs for MACful ports */ |
| 6632 | +int dpa_fq_probe_mac(struct device *dev, struct list_head *list, |
| 6633 | + struct fm_port_fqs *port_fqs, |
| 6634 | + bool alloc_tx_conf_fqs, |
| 6635 | + enum port_type ptype) |
| 6636 | +{ |
| 6637 | + struct fqid_cell *fqids = NULL; |
| 6638 | + const void *fqids_off = NULL; |
| 6639 | + struct dpa_fq *dpa_fq = NULL; |
| 6640 | + struct device_node *np = dev->of_node; |
| 6641 | + int num_ranges; |
| 6642 | + int i, lenp; |
| 6643 | + |
| 6644 | + if (ptype == TX && alloc_tx_conf_fqs) { |
| 6645 | + if (!dpa_fq_alloc(dev, tx_confirm_fqids->start, |
| 6646 | + tx_confirm_fqids->count, list, |
| 6647 | + FQ_TYPE_TX_CONF_MQ)) |
| 6648 | + goto fq_alloc_failed; |
| 6649 | + } |
| 6650 | + |
| 6651 | + fqids_off = of_get_property(np, fsl_qman_frame_queues[ptype], &lenp); |
| 6652 | + if (fqids_off == NULL) { |
| 6653 | + /* No dts definition, so use the defaults. */ |
| 6654 | + fqids = default_fqids[ptype]; |
| 6655 | + num_ranges = 3; |
| 6656 | + } else { |
| 6657 | + num_ranges = lenp / sizeof(*fqids); |
| 6658 | + |
| 6659 | + fqids = devm_kzalloc(dev, sizeof(*fqids) * num_ranges, |
| 6660 | + GFP_KERNEL); |
| 6661 | + if (fqids == NULL) |
| 6662 | + goto fqids_alloc_failed; |
| 6663 | + |
| 6664 | + /* convert to CPU endianess */ |
| 6665 | + for (i = 0; i < num_ranges; i++) { |
| 6666 | + fqids[i].start = be32_to_cpup(fqids_off + |
| 6667 | + i * sizeof(*fqids)); |
| 6668 | + fqids[i].count = be32_to_cpup(fqids_off + |
| 6669 | + i * sizeof(*fqids) + sizeof(__be32)); |
| 6670 | + } |
| 6671 | + } |
| 6672 | + |
| 6673 | + for (i = 0; i < num_ranges; i++) { |
| 6674 | + switch (i) { |
| 6675 | + case 0: |
| 6676 | + /* The first queue is the error queue */ |
| 6677 | + if (fqids[i].count != 1) |
| 6678 | + goto invalid_error_queue; |
| 6679 | + |
| 6680 | + dpa_fq = dpa_fq_alloc(dev, fqids[i].start, |
| 6681 | + fqids[i].count, list, |
| 6682 | + ptype == RX ? |
| 6683 | + FQ_TYPE_RX_ERROR : |
| 6684 | + FQ_TYPE_TX_ERROR); |
| 6685 | + if (dpa_fq == NULL) |
| 6686 | + goto fq_alloc_failed; |
| 6687 | + |
| 6688 | + if (ptype == RX) |
| 6689 | + port_fqs->rx_errq = &dpa_fq[0]; |
| 6690 | + else |
| 6691 | + port_fqs->tx_errq = &dpa_fq[0]; |
| 6692 | + break; |
| 6693 | + case 1: |
| 6694 | + /* the second queue is the default queue */ |
| 6695 | + if (fqids[i].count != 1) |
| 6696 | + goto invalid_default_queue; |
| 6697 | + |
| 6698 | + dpa_fq = dpa_fq_alloc(dev, fqids[i].start, |
| 6699 | + fqids[i].count, list, |
| 6700 | + ptype == RX ? |
| 6701 | + FQ_TYPE_RX_DEFAULT : |
| 6702 | + FQ_TYPE_TX_CONFIRM); |
| 6703 | + if (dpa_fq == NULL) |
| 6704 | + goto fq_alloc_failed; |
| 6705 | + |
| 6706 | + if (ptype == RX) |
| 6707 | + port_fqs->rx_defq = &dpa_fq[0]; |
| 6708 | + else |
| 6709 | + port_fqs->tx_defq = &dpa_fq[0]; |
| 6710 | + break; |
| 6711 | + default: |
| 6712 | + /* all subsequent queues are either RX* PCD or Tx */ |
| 6713 | + if (ptype == RX) { |
| 6714 | + if (!dpa_fq_alloc(dev, fqids[i].start, |
| 6715 | + fqids[i].count, list, |
| 6716 | + FQ_TYPE_RX_PCD) || |
| 6717 | + !dpa_fq_alloc(dev, fqids[i].start, |
| 6718 | + fqids[i].count, list, |
| 6719 | + FQ_TYPE_RX_PCD_HI_PRIO)) |
| 6720 | + goto fq_alloc_failed; |
| 6721 | + } else { |
| 6722 | + if (!dpa_fq_alloc(dev, fqids[i].start, |
| 6723 | + fqids[i].count, list, |
| 6724 | + FQ_TYPE_TX)) |
| 6725 | + goto fq_alloc_failed; |
| 6726 | + } |
| 6727 | + break; |
| 6728 | + } |
| 6729 | + } |
| 6730 | + |
| 6731 | + return 0; |
| 6732 | + |
| 6733 | +fq_alloc_failed: |
| 6734 | +fqids_alloc_failed: |
| 6735 | + dev_err(dev, "Cannot allocate memory for frame queues\n"); |
| 6736 | + return -ENOMEM; |
| 6737 | + |
| 6738 | +invalid_default_queue: |
| 6739 | +invalid_error_queue: |
| 6740 | + dev_err(dev, "Too many default or error queues\n"); |
| 6741 | + return -EINVAL; |
| 6742 | +} |
| 6743 | +EXPORT_SYMBOL(dpa_fq_probe_mac); |
| 6744 | + |
| 6745 | +static u32 rx_pool_channel; |
| 6746 | +static DEFINE_SPINLOCK(rx_pool_channel_init); |
| 6747 | + |
| 6748 | +int dpa_get_channel(void) |
| 6749 | +{ |
| 6750 | + spin_lock(&rx_pool_channel_init); |
| 6751 | + if (!rx_pool_channel) { |
| 6752 | + u32 pool; |
| 6753 | + int ret = qman_alloc_pool(&pool); |
| 6754 | + if (!ret) |
| 6755 | + rx_pool_channel = pool; |
| 6756 | + } |
| 6757 | + spin_unlock(&rx_pool_channel_init); |
| 6758 | + if (!rx_pool_channel) |
| 6759 | + return -ENOMEM; |
| 6760 | + return rx_pool_channel; |
| 6761 | +} |
| 6762 | +EXPORT_SYMBOL(dpa_get_channel); |
| 6763 | + |
| 6764 | +void dpa_release_channel(void) |
| 6765 | +{ |
| 6766 | + qman_release_pool(rx_pool_channel); |
| 6767 | +} |
| 6768 | +EXPORT_SYMBOL(dpa_release_channel); |
| 6769 | + |
| 6770 | +void dpaa_eth_add_channel(u16 channel) |
| 6771 | +{ |
| 6772 | + const cpumask_t *cpus = qman_affine_cpus(); |
| 6773 | + u32 pool = QM_SDQCR_CHANNELS_POOL_CONV(channel); |
| 6774 | + int cpu; |
| 6775 | + struct qman_portal *portal; |
| 6776 | + |
| 6777 | + for_each_cpu(cpu, cpus) { |
| 6778 | + portal = (struct qman_portal *)qman_get_affine_portal(cpu); |
| 6779 | + qman_p_static_dequeue_add(portal, pool); |
| 6780 | + } |
| 6781 | +} |
| 6782 | +EXPORT_SYMBOL(dpaa_eth_add_channel); |
| 6783 | + |
| 6784 | +/** |
| 6785 | + * Congestion group state change notification callback. |
| 6786 | + * Stops the device's egress queues while they are congested and |
| 6787 | + * wakes them upon exiting congested state. |
| 6788 | + * Also updates some CGR-related stats. |
| 6789 | + */ |
| 6790 | +static void dpaa_eth_cgscn(struct qman_portal *qm, struct qman_cgr *cgr, |
| 6791 | + |
| 6792 | + int congested) |
| 6793 | +{ |
| 6794 | + struct dpa_priv_s *priv = (struct dpa_priv_s *)container_of(cgr, |
| 6795 | + struct dpa_priv_s, cgr_data.cgr); |
| 6796 | + |
| 6797 | + if (congested) { |
| 6798 | + priv->cgr_data.congestion_start_jiffies = jiffies; |
| 6799 | + netif_tx_stop_all_queues(priv->net_dev); |
| 6800 | + priv->cgr_data.cgr_congested_count++; |
| 6801 | + } else { |
| 6802 | + priv->cgr_data.congested_jiffies += |
| 6803 | + (jiffies - priv->cgr_data.congestion_start_jiffies); |
| 6804 | + netif_tx_wake_all_queues(priv->net_dev); |
| 6805 | + } |
| 6806 | +} |
| 6807 | + |
| 6808 | +int dpaa_eth_cgr_init(struct dpa_priv_s *priv) |
| 6809 | +{ |
| 6810 | + struct qm_mcc_initcgr initcgr; |
| 6811 | + u32 cs_th; |
| 6812 | + int err; |
| 6813 | + |
| 6814 | + err = qman_alloc_cgrid(&priv->cgr_data.cgr.cgrid); |
| 6815 | + if (err < 0) { |
| 6816 | + pr_err("Error %d allocating CGR ID\n", err); |
| 6817 | + goto out_error; |
| 6818 | + } |
| 6819 | + priv->cgr_data.cgr.cb = dpaa_eth_cgscn; |
| 6820 | + |
| 6821 | + /* Enable Congestion State Change Notifications and CS taildrop */ |
| 6822 | + initcgr.we_mask = QM_CGR_WE_CSCN_EN | QM_CGR_WE_CS_THRES; |
| 6823 | + initcgr.cgr.cscn_en = QM_CGR_EN; |
| 6824 | + |
| 6825 | + /* Set different thresholds based on the MAC speed. |
| 6826 | + * TODO: this may turn suboptimal if the MAC is reconfigured at a speed |
| 6827 | + * lower than its max, e.g. if a dTSEC later negotiates a 100Mbps link. |
| 6828 | + * In such cases, we ought to reconfigure the threshold, too. |
| 6829 | + */ |
| 6830 | + if (priv->mac_dev->if_support & SUPPORTED_10000baseT_Full) |
| 6831 | + cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_10G; |
| 6832 | + else |
| 6833 | + cs_th = CONFIG_FSL_DPAA_CS_THRESHOLD_1G; |
| 6834 | + qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1); |
| 6835 | + |
| 6836 | + initcgr.we_mask |= QM_CGR_WE_CSTD_EN; |
| 6837 | + initcgr.cgr.cstd_en = QM_CGR_EN; |
| 6838 | + |
| 6839 | + err = qman_create_cgr(&priv->cgr_data.cgr, QMAN_CGR_FLAG_USE_INIT, |
| 6840 | + &initcgr); |
| 6841 | + if (err < 0) { |
| 6842 | + pr_err("Error %d creating CGR with ID %d\n", err, |
| 6843 | + priv->cgr_data.cgr.cgrid); |
| 6844 | + qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
| 6845 | + goto out_error; |
| 6846 | + } |
| 6847 | + pr_debug("Created CGR %d for netdev with hwaddr %pM on QMan channel %d\n", |
| 6848 | + priv->cgr_data.cgr.cgrid, priv->mac_dev->addr, |
| 6849 | + priv->cgr_data.cgr.chan); |
| 6850 | + |
| 6851 | +out_error: |
| 6852 | + return err; |
| 6853 | +} |
| 6854 | +EXPORT_SYMBOL(dpaa_eth_cgr_init); |
| 6855 | + |
| 6856 | +static inline void dpa_setup_ingress(const struct dpa_priv_s *priv, |
| 6857 | + struct dpa_fq *fq, |
| 6858 | + const struct qman_fq *template) |
| 6859 | +{ |
| 6860 | + fq->fq_base = *template; |
| 6861 | + fq->net_dev = priv->net_dev; |
| 6862 | + |
| 6863 | + fq->flags = QMAN_FQ_FLAG_NO_ENQUEUE; |
| 6864 | + fq->channel = priv->channel; |
| 6865 | +} |
| 6866 | + |
| 6867 | +static inline void dpa_setup_egress(const struct dpa_priv_s *priv, |
| 6868 | + struct dpa_fq *fq, |
| 6869 | + struct fm_port *port, |
| 6870 | + const struct qman_fq *template) |
| 6871 | +{ |
| 6872 | + fq->fq_base = *template; |
| 6873 | + fq->net_dev = priv->net_dev; |
| 6874 | + |
| 6875 | + if (port) { |
| 6876 | + fq->flags = QMAN_FQ_FLAG_TO_DCPORTAL; |
| 6877 | + fq->channel = (uint16_t)fm_get_tx_port_channel(port); |
| 6878 | + } else { |
| 6879 | + fq->flags = QMAN_FQ_FLAG_NO_MODIFY; |
| 6880 | + } |
| 6881 | +} |
| 6882 | + |
| 6883 | +void dpa_fq_setup(struct dpa_priv_s *priv, const struct dpa_fq_cbs_t *fq_cbs, |
| 6884 | + struct fm_port *tx_port) |
| 6885 | +{ |
| 6886 | + struct dpa_fq *fq; |
| 6887 | + uint16_t portals[NR_CPUS]; |
| 6888 | + int cpu, portal_cnt = 0, num_portals = 0; |
| 6889 | + uint32_t pcd_fqid, pcd_fqid_hi_prio; |
| 6890 | + const cpumask_t *affine_cpus = qman_affine_cpus(); |
| 6891 | + int egress_cnt = 0, conf_cnt = 0; |
| 6892 | + |
| 6893 | + /* Prepare for PCD FQs init */ |
| 6894 | + for_each_cpu(cpu, affine_cpus) |
| 6895 | + portals[num_portals++] = qman_affine_channel(cpu); |
| 6896 | + if (num_portals == 0) |
| 6897 | + dev_err(priv->net_dev->dev.parent, |
| 6898 | + "No Qman software (affine) channels found"); |
| 6899 | + |
| 6900 | + pcd_fqid = (priv->mac_dev) ? |
| 6901 | + DPAA_ETH_PCD_FQ_BASE(priv->mac_dev->res->start) : 0; |
| 6902 | + pcd_fqid_hi_prio = (priv->mac_dev) ? |
| 6903 | + DPAA_ETH_PCD_FQ_HI_PRIO_BASE(priv->mac_dev->res->start) : 0; |
| 6904 | + |
| 6905 | + /* Initialize each FQ in the list */ |
| 6906 | + list_for_each_entry(fq, &priv->dpa_fq_list, list) { |
| 6907 | + switch (fq->fq_type) { |
| 6908 | + case FQ_TYPE_RX_DEFAULT: |
| 6909 | + BUG_ON(!priv->mac_dev); |
| 6910 | + dpa_setup_ingress(priv, fq, &fq_cbs->rx_defq); |
| 6911 | + break; |
| 6912 | + case FQ_TYPE_RX_ERROR: |
| 6913 | + BUG_ON(!priv->mac_dev); |
| 6914 | + dpa_setup_ingress(priv, fq, &fq_cbs->rx_errq); |
| 6915 | + break; |
| 6916 | + case FQ_TYPE_RX_PCD: |
| 6917 | + /* For MACless we can't have dynamic Rx queues */ |
| 6918 | + BUG_ON(!priv->mac_dev && !fq->fqid); |
| 6919 | + dpa_setup_ingress(priv, fq, &fq_cbs->rx_defq); |
| 6920 | + if (!fq->fqid) |
| 6921 | + fq->fqid = pcd_fqid++; |
| 6922 | + fq->channel = portals[portal_cnt]; |
| 6923 | + portal_cnt = (portal_cnt + 1) % num_portals; |
| 6924 | + break; |
| 6925 | + case FQ_TYPE_RX_PCD_HI_PRIO: |
| 6926 | + /* For MACless we can't have dynamic Hi Pri Rx queues */ |
| 6927 | + BUG_ON(!priv->mac_dev && !fq->fqid); |
| 6928 | + dpa_setup_ingress(priv, fq, &fq_cbs->rx_defq); |
| 6929 | + if (!fq->fqid) |
| 6930 | + fq->fqid = pcd_fqid_hi_prio++; |
| 6931 | + fq->channel = portals[portal_cnt]; |
| 6932 | + portal_cnt = (portal_cnt + 1) % num_portals; |
| 6933 | + break; |
| 6934 | + case FQ_TYPE_TX: |
| 6935 | + dpa_setup_egress(priv, fq, tx_port, |
| 6936 | + &fq_cbs->egress_ern); |
| 6937 | + /* If we have more Tx queues than the number of cores, |
| 6938 | + * just ignore the extra ones. |
| 6939 | + */ |
| 6940 | + if (egress_cnt < DPAA_ETH_TX_QUEUES) |
| 6941 | + priv->egress_fqs[egress_cnt++] = &fq->fq_base; |
| 6942 | + break; |
| 6943 | + case FQ_TYPE_TX_CONFIRM: |
| 6944 | + BUG_ON(!priv->mac_dev); |
| 6945 | + dpa_setup_ingress(priv, fq, &fq_cbs->tx_defq); |
| 6946 | + break; |
| 6947 | + case FQ_TYPE_TX_CONF_MQ: |
| 6948 | + BUG_ON(!priv->mac_dev); |
| 6949 | + dpa_setup_ingress(priv, fq, &fq_cbs->tx_defq); |
| 6950 | + priv->conf_fqs[conf_cnt++] = &fq->fq_base; |
| 6951 | + break; |
| 6952 | + case FQ_TYPE_TX_ERROR: |
| 6953 | + BUG_ON(!priv->mac_dev); |
| 6954 | + dpa_setup_ingress(priv, fq, &fq_cbs->tx_errq); |
| 6955 | + break; |
| 6956 | + default: |
| 6957 | + dev_warn(priv->net_dev->dev.parent, |
| 6958 | + "Unknown FQ type detected!\n"); |
| 6959 | + break; |
| 6960 | + } |
| 6961 | + } |
| 6962 | + |
| 6963 | + /* The number of Tx queues may be smaller than the number of cores, if |
| 6964 | + * the Tx queue range is specified in the device tree instead of being |
| 6965 | + * dynamically allocated. |
| 6966 | + * Make sure all CPUs receive a corresponding Tx queue. |
| 6967 | + */ |
| 6968 | + while (egress_cnt < DPAA_ETH_TX_QUEUES) { |
| 6969 | + list_for_each_entry(fq, &priv->dpa_fq_list, list) { |
| 6970 | + if (fq->fq_type != FQ_TYPE_TX) |
| 6971 | + continue; |
| 6972 | + priv->egress_fqs[egress_cnt++] = &fq->fq_base; |
| 6973 | + if (egress_cnt == DPAA_ETH_TX_QUEUES) |
| 6974 | + break; |
| 6975 | + } |
| 6976 | + } |
| 6977 | +} |
| 6978 | +EXPORT_SYMBOL(dpa_fq_setup); |
| 6979 | + |
| 6980 | +int dpa_fq_init(struct dpa_fq *dpa_fq, bool td_enable) |
| 6981 | +{ |
| 6982 | + int _errno; |
| 6983 | + const struct dpa_priv_s *priv; |
| 6984 | + struct device *dev; |
| 6985 | + struct qman_fq *fq; |
| 6986 | + struct qm_mcc_initfq initfq; |
| 6987 | + struct qman_fq *confq; |
| 6988 | + int queue_id; |
| 6989 | + |
| 6990 | + priv = netdev_priv(dpa_fq->net_dev); |
| 6991 | + dev = dpa_fq->net_dev->dev.parent; |
| 6992 | + |
| 6993 | + if (dpa_fq->fqid == 0) |
| 6994 | + dpa_fq->flags |= QMAN_FQ_FLAG_DYNAMIC_FQID; |
| 6995 | + |
| 6996 | + dpa_fq->init = !(dpa_fq->flags & QMAN_FQ_FLAG_NO_MODIFY); |
| 6997 | + |
| 6998 | + _errno = qman_create_fq(dpa_fq->fqid, dpa_fq->flags, &dpa_fq->fq_base); |
| 6999 | + if (_errno) { |
| 7000 | + dev_err(dev, "qman_create_fq() failed\n"); |
| 7001 | + return _errno; |
| 7002 | + } |
| 7003 | + fq = &dpa_fq->fq_base; |
| 7004 | + |
| 7005 | + if (dpa_fq->init) { |
| 7006 | + memset(&initfq, 0, sizeof(initfq)); |
| 7007 | + |
| 7008 | + initfq.we_mask = QM_INITFQ_WE_FQCTRL; |
| 7009 | + /* FIXME: why would we want to keep an empty FQ in cache? */ |
| 7010 | + initfq.fqd.fq_ctrl = QM_FQCTRL_PREFERINCACHE; |
| 7011 | + |
| 7012 | + /* Try to reduce the number of portal interrupts for |
| 7013 | + * Tx Confirmation FQs. |
| 7014 | + */ |
| 7015 | + if (dpa_fq->fq_type == FQ_TYPE_TX_CONFIRM) |
| 7016 | + initfq.fqd.fq_ctrl |= QM_FQCTRL_HOLDACTIVE; |
| 7017 | + |
| 7018 | + /* FQ placement */ |
| 7019 | + initfq.we_mask |= QM_INITFQ_WE_DESTWQ; |
| 7020 | + |
| 7021 | + initfq.fqd.dest.channel = dpa_fq->channel; |
| 7022 | + initfq.fqd.dest.wq = dpa_fq->wq; |
| 7023 | + |
| 7024 | + /* Put all egress queues in a congestion group of their own. |
| 7025 | + * Sensu stricto, the Tx confirmation queues are Rx FQs, |
| 7026 | + * rather than Tx - but they nonetheless account for the |
| 7027 | + * memory footprint on behalf of egress traffic. We therefore |
| 7028 | + * place them in the netdev's CGR, along with the Tx FQs. |
| 7029 | + */ |
| 7030 | + if (dpa_fq->fq_type == FQ_TYPE_TX || |
| 7031 | + dpa_fq->fq_type == FQ_TYPE_TX_CONFIRM || |
| 7032 | + dpa_fq->fq_type == FQ_TYPE_TX_CONF_MQ) { |
| 7033 | + initfq.we_mask |= QM_INITFQ_WE_CGID; |
| 7034 | + initfq.fqd.fq_ctrl |= QM_FQCTRL_CGE; |
| 7035 | + initfq.fqd.cgid = (uint8_t)priv->cgr_data.cgr.cgrid; |
| 7036 | + /* Set a fixed overhead accounting, in an attempt to |
| 7037 | + * reduce the impact of fixed-size skb shells and the |
| 7038 | + * driver's needed headroom on system memory. This is |
| 7039 | + * especially the case when the egress traffic is |
| 7040 | + * composed of small datagrams. |
| 7041 | + * Unfortunately, QMan's OAL value is capped to an |
| 7042 | + * insufficient value, but even that is better than |
| 7043 | + * no overhead accounting at all. |
| 7044 | + */ |
| 7045 | + initfq.we_mask |= QM_INITFQ_WE_OAC; |
| 7046 | + initfq.fqd.oac_init.oac = QM_OAC_CG; |
| 7047 | + initfq.fqd.oac_init.oal = |
| 7048 | + (signed char)(min(sizeof(struct sk_buff) + |
| 7049 | + priv->tx_headroom, (size_t)FSL_QMAN_MAX_OAL)); |
| 7050 | + } |
| 7051 | + |
| 7052 | + if (td_enable) { |
| 7053 | + initfq.we_mask |= QM_INITFQ_WE_TDTHRESH; |
| 7054 | + qm_fqd_taildrop_set(&initfq.fqd.td, |
| 7055 | + DPA_FQ_TD, 1); |
| 7056 | + initfq.fqd.fq_ctrl = QM_FQCTRL_TDE; |
| 7057 | + } |
| 7058 | + |
| 7059 | + /* Configure the Tx confirmation queue, now that we know |
| 7060 | + * which Tx queue it pairs with. |
| 7061 | + */ |
| 7062 | + if (dpa_fq->fq_type == FQ_TYPE_TX) { |
| 7063 | + queue_id = _dpa_tx_fq_to_id(priv, &dpa_fq->fq_base); |
| 7064 | + if (queue_id >= 0) { |
| 7065 | + confq = priv->conf_fqs[queue_id]; |
| 7066 | + if (confq) { |
| 7067 | + initfq.we_mask |= QM_INITFQ_WE_CONTEXTA; |
| 7068 | + /* ContextA: OVOM=1 (use contextA2 bits instead of ICAD) |
| 7069 | + * A2V=1 (contextA A2 field is valid) |
| 7070 | + * A0V=1 (contextA A0 field is valid) |
| 7071 | + * B0V=1 (contextB field is valid) |
| 7072 | + * ContextA A2: EBD=1 (deallocate buffers inside FMan) |
| 7073 | + * ContextB B0(ASPID): 0 (absolute Virtual Storage ID) |
| 7074 | + */ |
| 7075 | + initfq.fqd.context_a.hi = 0x1e000000; |
| 7076 | + initfq.fqd.context_a.lo = 0x80000000; |
| 7077 | + } |
| 7078 | + } |
| 7079 | + } |
| 7080 | + |
| 7081 | + /* Put all *private* ingress queues in our "ingress CGR". */ |
| 7082 | + if (priv->use_ingress_cgr && |
| 7083 | + (dpa_fq->fq_type == FQ_TYPE_RX_DEFAULT || |
| 7084 | + dpa_fq->fq_type == FQ_TYPE_RX_ERROR || |
| 7085 | + dpa_fq->fq_type == FQ_TYPE_RX_PCD || |
| 7086 | + dpa_fq->fq_type == FQ_TYPE_RX_PCD_HI_PRIO)) { |
| 7087 | + initfq.we_mask |= QM_INITFQ_WE_CGID; |
| 7088 | + initfq.fqd.fq_ctrl |= QM_FQCTRL_CGE; |
| 7089 | + initfq.fqd.cgid = (uint8_t)priv->ingress_cgr.cgrid; |
| 7090 | + /* Set a fixed overhead accounting, just like for the |
| 7091 | + * egress CGR. |
| 7092 | + */ |
| 7093 | + initfq.we_mask |= QM_INITFQ_WE_OAC; |
| 7094 | + initfq.fqd.oac_init.oac = QM_OAC_CG; |
| 7095 | + initfq.fqd.oac_init.oal = |
| 7096 | + (signed char)(min(sizeof(struct sk_buff) + |
| 7097 | + priv->tx_headroom, (size_t)FSL_QMAN_MAX_OAL)); |
| 7098 | + } |
| 7099 | + |
| 7100 | + /* Initialization common to all ingress queues */ |
| 7101 | + if (dpa_fq->flags & QMAN_FQ_FLAG_NO_ENQUEUE) { |
| 7102 | + initfq.we_mask |= QM_INITFQ_WE_CONTEXTA; |
| 7103 | + initfq.fqd.fq_ctrl |= |
| 7104 | + QM_FQCTRL_CTXASTASHING | QM_FQCTRL_AVOIDBLOCK; |
| 7105 | + initfq.fqd.context_a.stashing.exclusive = |
| 7106 | + QM_STASHING_EXCL_DATA | QM_STASHING_EXCL_CTX | |
| 7107 | + QM_STASHING_EXCL_ANNOTATION; |
| 7108 | + initfq.fqd.context_a.stashing.data_cl = 2; |
| 7109 | + initfq.fqd.context_a.stashing.annotation_cl = 1; |
| 7110 | + initfq.fqd.context_a.stashing.context_cl = |
| 7111 | + DIV_ROUND_UP(sizeof(struct qman_fq), 64); |
| 7112 | + } |
| 7113 | + |
| 7114 | + _errno = qman_init_fq(fq, QMAN_INITFQ_FLAG_SCHED, &initfq); |
| 7115 | + if (_errno < 0) { |
| 7116 | + if (DPA_RX_PCD_HI_PRIO_FQ_INIT_FAIL(dpa_fq, _errno)) { |
| 7117 | + dpa_fq->init = 0; |
| 7118 | + } else { |
| 7119 | + dev_err(dev, "qman_init_fq(%u) = %d\n", |
| 7120 | + qman_fq_fqid(fq), _errno); |
| 7121 | + qman_destroy_fq(fq, 0); |
| 7122 | + } |
| 7123 | + return _errno; |
| 7124 | + } |
| 7125 | + } |
| 7126 | + |
| 7127 | + dpa_fq->fqid = qman_fq_fqid(fq); |
| 7128 | + |
| 7129 | + return 0; |
| 7130 | +} |
| 7131 | +EXPORT_SYMBOL(dpa_fq_init); |
| 7132 | + |
| 7133 | +int __cold __attribute__((nonnull)) |
| 7134 | +_dpa_fq_free(struct device *dev, struct qman_fq *fq) |
| 7135 | +{ |
| 7136 | + int _errno, __errno; |
| 7137 | + struct dpa_fq *dpa_fq; |
| 7138 | + const struct dpa_priv_s *priv; |
| 7139 | + |
| 7140 | + _errno = 0; |
| 7141 | + |
| 7142 | + dpa_fq = container_of(fq, struct dpa_fq, fq_base); |
| 7143 | + priv = netdev_priv(dpa_fq->net_dev); |
| 7144 | + |
| 7145 | + if (dpa_fq->init) { |
| 7146 | + _errno = qman_retire_fq(fq, NULL); |
| 7147 | + if (unlikely(_errno < 0) && netif_msg_drv(priv)) |
| 7148 | + dev_err(dev, "qman_retire_fq(%u) = %d\n", |
| 7149 | + qman_fq_fqid(fq), _errno); |
| 7150 | + |
| 7151 | + __errno = qman_oos_fq(fq); |
| 7152 | + if (unlikely(__errno < 0) && netif_msg_drv(priv)) { |
| 7153 | + dev_err(dev, "qman_oos_fq(%u) = %d\n", |
| 7154 | + qman_fq_fqid(fq), __errno); |
| 7155 | + if (_errno >= 0) |
| 7156 | + _errno = __errno; |
| 7157 | + } |
| 7158 | + } |
| 7159 | + |
| 7160 | + qman_destroy_fq(fq, 0); |
| 7161 | + list_del(&dpa_fq->list); |
| 7162 | + |
| 7163 | + return _errno; |
| 7164 | +} |
| 7165 | +EXPORT_SYMBOL(_dpa_fq_free); |
| 7166 | + |
| 7167 | +int __cold __attribute__((nonnull)) |
| 7168 | +dpa_fq_free(struct device *dev, struct list_head *list) |
| 7169 | +{ |
| 7170 | + int _errno, __errno; |
| 7171 | + struct dpa_fq *dpa_fq, *tmp; |
| 7172 | + |
| 7173 | + _errno = 0; |
| 7174 | + list_for_each_entry_safe(dpa_fq, tmp, list, list) { |
| 7175 | + __errno = _dpa_fq_free(dev, (struct qman_fq *)dpa_fq); |
| 7176 | + if (unlikely(__errno < 0) && _errno >= 0) |
| 7177 | + _errno = __errno; |
| 7178 | + } |
| 7179 | + |
| 7180 | + return _errno; |
| 7181 | +} |
| 7182 | +EXPORT_SYMBOL(dpa_fq_free); |
| 7183 | + |
| 7184 | +int dpa_fqs_init(struct device *dev, struct list_head *list, bool td_enable) |
| 7185 | +{ |
| 7186 | + int _errno, __errno; |
| 7187 | + struct dpa_fq *dpa_fq, *tmp; |
| 7188 | + static bool print_msg __read_mostly; |
| 7189 | + |
| 7190 | + _errno = 0; |
| 7191 | + print_msg = true; |
| 7192 | + list_for_each_entry_safe(dpa_fq, tmp, list, list) { |
| 7193 | + __errno = dpa_fq_init(dpa_fq, td_enable); |
| 7194 | + if (unlikely(__errno < 0) && _errno >= 0) { |
| 7195 | + if (DPA_RX_PCD_HI_PRIO_FQ_INIT_FAIL(dpa_fq, __errno)) { |
| 7196 | + if (print_msg) { |
| 7197 | + dev_warn(dev, |
| 7198 | + "Skip RX PCD High Priority FQs initialization\n"); |
| 7199 | + print_msg = false; |
| 7200 | + } |
| 7201 | + if (_dpa_fq_free(dev, (struct qman_fq *)dpa_fq)) |
| 7202 | + dev_warn(dev, |
| 7203 | + "Error freeing frame queues\n"); |
| 7204 | + } else { |
| 7205 | + _errno = __errno; |
| 7206 | + break; |
| 7207 | + } |
| 7208 | + } |
| 7209 | + } |
| 7210 | + |
| 7211 | + return _errno; |
| 7212 | +} |
| 7213 | +EXPORT_SYMBOL(dpa_fqs_init); |
| 7214 | +static void |
| 7215 | +dpaa_eth_init_tx_port(struct fm_port *port, struct dpa_fq *errq, |
| 7216 | + struct dpa_fq *defq, struct dpa_buffer_layout_s *buf_layout) |
| 7217 | +{ |
| 7218 | + struct fm_port_params tx_port_param; |
| 7219 | + bool frag_enabled = false; |
| 7220 | + |
| 7221 | + memset(&tx_port_param, 0, sizeof(tx_port_param)); |
| 7222 | + dpaa_eth_init_port(tx, port, tx_port_param, errq->fqid, defq->fqid, |
| 7223 | + buf_layout, frag_enabled); |
| 7224 | +} |
| 7225 | + |
| 7226 | +static void |
| 7227 | +dpaa_eth_init_rx_port(struct fm_port *port, struct dpa_bp *bp, size_t count, |
| 7228 | + struct dpa_fq *errq, struct dpa_fq *defq, |
| 7229 | + struct dpa_buffer_layout_s *buf_layout) |
| 7230 | +{ |
| 7231 | + struct fm_port_params rx_port_param; |
| 7232 | + int i; |
| 7233 | + bool frag_enabled = false; |
| 7234 | + |
| 7235 | + memset(&rx_port_param, 0, sizeof(rx_port_param)); |
| 7236 | + count = min(ARRAY_SIZE(rx_port_param.pool_param), count); |
| 7237 | + rx_port_param.num_pools = (uint8_t)count; |
| 7238 | + for (i = 0; i < count; i++) { |
| 7239 | + if (i >= rx_port_param.num_pools) |
| 7240 | + break; |
| 7241 | + rx_port_param.pool_param[i].id = bp[i].bpid; |
| 7242 | + rx_port_param.pool_param[i].size = (uint16_t)bp[i].size; |
| 7243 | + } |
| 7244 | + |
| 7245 | + dpaa_eth_init_port(rx, port, rx_port_param, errq->fqid, defq->fqid, |
| 7246 | + buf_layout, frag_enabled); |
| 7247 | +} |
| 7248 | + |
| 7249 | +#if defined(CONFIG_FSL_SDK_FMAN_TEST) |
| 7250 | +/* Defined as weak, to be implemented by fman pcd tester. */ |
| 7251 | +int dpa_alloc_pcd_fqids(struct device *, uint32_t, uint8_t, uint32_t *) |
| 7252 | +__attribute__((weak)); |
| 7253 | + |
| 7254 | +int dpa_free_pcd_fqids(struct device *, uint32_t) __attribute__((weak)); |
| 7255 | +#else |
| 7256 | +int dpa_alloc_pcd_fqids(struct device *, uint32_t, uint8_t, uint32_t *); |
| 7257 | + |
| 7258 | +int dpa_free_pcd_fqids(struct device *, uint32_t); |
| 7259 | + |
| 7260 | +#endif /* CONFIG_FSL_SDK_FMAN_TEST */ |
| 7261 | + |
| 7262 | + |
| 7263 | +int dpa_alloc_pcd_fqids(struct device *dev, uint32_t num, |
| 7264 | + uint8_t alignment, uint32_t *base_fqid) |
| 7265 | +{ |
| 7266 | + dev_crit(dev, "callback not implemented!\n"); |
| 7267 | + |
| 7268 | + return 0; |
| 7269 | +} |
| 7270 | + |
| 7271 | +int dpa_free_pcd_fqids(struct device *dev, uint32_t base_fqid) |
| 7272 | +{ |
| 7273 | + |
| 7274 | + dev_crit(dev, "callback not implemented!\n"); |
| 7275 | + |
| 7276 | + return 0; |
| 7277 | +} |
| 7278 | + |
| 7279 | +void dpaa_eth_init_ports(struct mac_device *mac_dev, |
| 7280 | + struct dpa_bp *bp, size_t count, |
| 7281 | + struct fm_port_fqs *port_fqs, |
| 7282 | + struct dpa_buffer_layout_s *buf_layout, |
| 7283 | + struct device *dev) |
| 7284 | +{ |
| 7285 | + struct fm_port_pcd_param rx_port_pcd_param; |
| 7286 | + struct fm_port *rxport = mac_dev->port_dev[RX]; |
| 7287 | + struct fm_port *txport = mac_dev->port_dev[TX]; |
| 7288 | + |
| 7289 | + dpaa_eth_init_tx_port(txport, port_fqs->tx_errq, |
| 7290 | + port_fqs->tx_defq, &buf_layout[TX]); |
| 7291 | + dpaa_eth_init_rx_port(rxport, bp, count, port_fqs->rx_errq, |
| 7292 | + port_fqs->rx_defq, &buf_layout[RX]); |
| 7293 | + |
| 7294 | + rx_port_pcd_param.cba = dpa_alloc_pcd_fqids; |
| 7295 | + rx_port_pcd_param.cbf = dpa_free_pcd_fqids; |
| 7296 | + rx_port_pcd_param.dev = dev; |
| 7297 | + fm_port_pcd_bind(rxport, &rx_port_pcd_param); |
| 7298 | +} |
| 7299 | +EXPORT_SYMBOL(dpaa_eth_init_ports); |
| 7300 | + |
| 7301 | +void dpa_release_sgt(struct qm_sg_entry *sgt) |
| 7302 | +{ |
| 7303 | + struct dpa_bp *dpa_bp; |
| 7304 | + struct bm_buffer bmb[DPA_BUFF_RELEASE_MAX]; |
| 7305 | + uint8_t i = 0, j; |
| 7306 | + |
| 7307 | + memset(bmb, 0, DPA_BUFF_RELEASE_MAX * sizeof(struct bm_buffer)); |
| 7308 | + |
| 7309 | + do { |
| 7310 | + dpa_bp = dpa_bpid2pool(qm_sg_entry_get_bpid(&sgt[i])); |
| 7311 | + DPA_BUG_ON(!dpa_bp); |
| 7312 | + |
| 7313 | + j = 0; |
| 7314 | + do { |
| 7315 | + DPA_BUG_ON(qm_sg_entry_get_ext(&sgt[i])); |
| 7316 | + bm_buffer_set64(&bmb[j], qm_sg_addr(&sgt[i])); |
| 7317 | + |
| 7318 | + j++; i++; |
| 7319 | + } while (j < ARRAY_SIZE(bmb) && |
| 7320 | + !qm_sg_entry_get_final(&sgt[i-1]) && |
| 7321 | + qm_sg_entry_get_bpid(&sgt[i-1]) == |
| 7322 | + qm_sg_entry_get_bpid(&sgt[i])); |
| 7323 | + |
| 7324 | + while (bman_release(dpa_bp->pool, bmb, j, 0)) |
| 7325 | + cpu_relax(); |
| 7326 | + } while (!qm_sg_entry_get_final(&sgt[i-1])); |
| 7327 | +} |
| 7328 | +EXPORT_SYMBOL(dpa_release_sgt); |
| 7329 | + |
| 7330 | +void __attribute__((nonnull)) |
| 7331 | +dpa_fd_release(const struct net_device *net_dev, const struct qm_fd *fd) |
| 7332 | +{ |
| 7333 | + struct qm_sg_entry *sgt; |
| 7334 | + struct dpa_bp *dpa_bp; |
| 7335 | + struct bm_buffer bmb; |
| 7336 | + dma_addr_t addr; |
| 7337 | + void *vaddr; |
| 7338 | + |
| 7339 | + bmb.opaque = 0; |
| 7340 | + bm_buffer_set64(&bmb, qm_fd_addr(fd)); |
| 7341 | + |
| 7342 | + dpa_bp = dpa_bpid2pool(fd->bpid); |
| 7343 | + DPA_BUG_ON(!dpa_bp); |
| 7344 | + |
| 7345 | + if (fd->format == qm_fd_sg) { |
| 7346 | + vaddr = phys_to_virt(qm_fd_addr(fd)); |
| 7347 | + sgt = vaddr + dpa_fd_offset(fd); |
| 7348 | + |
| 7349 | + dma_unmap_single(dpa_bp->dev, qm_fd_addr(fd), dpa_bp->size, |
| 7350 | + DMA_BIDIRECTIONAL); |
| 7351 | + |
| 7352 | + dpa_release_sgt(sgt); |
| 7353 | + addr = dma_map_single(dpa_bp->dev, vaddr, dpa_bp->size, |
| 7354 | + DMA_BIDIRECTIONAL); |
| 7355 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 7356 | + dev_err(dpa_bp->dev, "DMA mapping failed"); |
| 7357 | + return; |
| 7358 | + } |
| 7359 | + bm_buffer_set64(&bmb, addr); |
| 7360 | + } |
| 7361 | + |
| 7362 | + while (bman_release(dpa_bp->pool, &bmb, 1, 0)) |
| 7363 | + cpu_relax(); |
| 7364 | +} |
| 7365 | +EXPORT_SYMBOL(dpa_fd_release); |
| 7366 | + |
| 7367 | +void count_ern(struct dpa_percpu_priv_s *percpu_priv, |
| 7368 | + const struct qm_mr_entry *msg) |
| 7369 | +{ |
| 7370 | + switch (msg->ern.rc & QM_MR_RC_MASK) { |
| 7371 | + case QM_MR_RC_CGR_TAILDROP: |
| 7372 | + percpu_priv->ern_cnt.cg_tdrop++; |
| 7373 | + break; |
| 7374 | + case QM_MR_RC_WRED: |
| 7375 | + percpu_priv->ern_cnt.wred++; |
| 7376 | + break; |
| 7377 | + case QM_MR_RC_ERROR: |
| 7378 | + percpu_priv->ern_cnt.err_cond++; |
| 7379 | + break; |
| 7380 | + case QM_MR_RC_ORPWINDOW_EARLY: |
| 7381 | + percpu_priv->ern_cnt.early_window++; |
| 7382 | + break; |
| 7383 | + case QM_MR_RC_ORPWINDOW_LATE: |
| 7384 | + percpu_priv->ern_cnt.late_window++; |
| 7385 | + break; |
| 7386 | + case QM_MR_RC_FQ_TAILDROP: |
| 7387 | + percpu_priv->ern_cnt.fq_tdrop++; |
| 7388 | + break; |
| 7389 | + case QM_MR_RC_ORPWINDOW_RETIRED: |
| 7390 | + percpu_priv->ern_cnt.fq_retired++; |
| 7391 | + break; |
| 7392 | + case QM_MR_RC_ORP_ZERO: |
| 7393 | + percpu_priv->ern_cnt.orp_zero++; |
| 7394 | + break; |
| 7395 | + } |
| 7396 | +} |
| 7397 | +EXPORT_SYMBOL(count_ern); |
| 7398 | + |
| 7399 | +/** |
| 7400 | + * Turn on HW checksum computation for this outgoing frame. |
| 7401 | + * If the current protocol is not something we support in this regard |
| 7402 | + * (or if the stack has already computed the SW checksum), we do nothing. |
| 7403 | + * |
| 7404 | + * Returns 0 if all goes well (or HW csum doesn't apply), and a negative value |
| 7405 | + * otherwise. |
| 7406 | + * |
| 7407 | + * Note that this function may modify the fd->cmd field and the skb data buffer |
| 7408 | + * (the Parse Results area). |
| 7409 | + */ |
| 7410 | +int dpa_enable_tx_csum(struct dpa_priv_s *priv, |
| 7411 | + struct sk_buff *skb, struct qm_fd *fd, char *parse_results) |
| 7412 | +{ |
| 7413 | + fm_prs_result_t *parse_result; |
| 7414 | + struct iphdr *iph; |
| 7415 | + struct ipv6hdr *ipv6h = NULL; |
| 7416 | + u8 l4_proto; |
| 7417 | + u16 ethertype = ntohs(skb->protocol); |
| 7418 | + int retval = 0; |
| 7419 | + |
| 7420 | + if (skb->ip_summed != CHECKSUM_PARTIAL) |
| 7421 | + return 0; |
| 7422 | + |
| 7423 | + /* Note: L3 csum seems to be already computed in sw, but we can't choose |
| 7424 | + * L4 alone from the FM configuration anyway. |
| 7425 | + */ |
| 7426 | + |
| 7427 | + /* Fill in some fields of the Parse Results array, so the FMan |
| 7428 | + * can find them as if they came from the FMan Parser. |
| 7429 | + */ |
| 7430 | + parse_result = (fm_prs_result_t *)parse_results; |
| 7431 | + |
| 7432 | + /* If we're dealing with VLAN, get the real Ethernet type */ |
| 7433 | + if (ethertype == ETH_P_8021Q) { |
| 7434 | + /* We can't always assume the MAC header is set correctly |
| 7435 | + * by the stack, so reset to beginning of skb->data |
| 7436 | + */ |
| 7437 | + skb_reset_mac_header(skb); |
| 7438 | + ethertype = ntohs(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); |
| 7439 | + } |
| 7440 | + |
| 7441 | + /* Fill in the relevant L3 parse result fields |
| 7442 | + * and read the L4 protocol type |
| 7443 | + */ |
| 7444 | + switch (ethertype) { |
| 7445 | + case ETH_P_IP: |
| 7446 | + parse_result->l3r = cpu_to_be16(FM_L3_PARSE_RESULT_IPV4); |
| 7447 | + iph = ip_hdr(skb); |
| 7448 | + DPA_BUG_ON(iph == NULL); |
| 7449 | + l4_proto = iph->protocol; |
| 7450 | + break; |
| 7451 | + case ETH_P_IPV6: |
| 7452 | + parse_result->l3r = cpu_to_be16(FM_L3_PARSE_RESULT_IPV6); |
| 7453 | + ipv6h = ipv6_hdr(skb); |
| 7454 | + DPA_BUG_ON(ipv6h == NULL); |
| 7455 | + l4_proto = ipv6h->nexthdr; |
| 7456 | + break; |
| 7457 | + default: |
| 7458 | + /* We shouldn't even be here */ |
| 7459 | + if (netif_msg_tx_err(priv) && net_ratelimit()) |
| 7460 | + netdev_alert(priv->net_dev, |
| 7461 | + "Can't compute HW csum for L3 proto 0x%x\n", |
| 7462 | + ntohs(skb->protocol)); |
| 7463 | + retval = -EIO; |
| 7464 | + goto return_error; |
| 7465 | + } |
| 7466 | + |
| 7467 | + /* Fill in the relevant L4 parse result fields */ |
| 7468 | + switch (l4_proto) { |
| 7469 | + case IPPROTO_UDP: |
| 7470 | + parse_result->l4r = FM_L4_PARSE_RESULT_UDP; |
| 7471 | + break; |
| 7472 | + case IPPROTO_TCP: |
| 7473 | + parse_result->l4r = FM_L4_PARSE_RESULT_TCP; |
| 7474 | + break; |
| 7475 | + default: |
| 7476 | + /* This can as well be a BUG() */ |
| 7477 | + if (netif_msg_tx_err(priv) && net_ratelimit()) |
| 7478 | + netdev_alert(priv->net_dev, |
| 7479 | + "Can't compute HW csum for L4 proto 0x%x\n", |
| 7480 | + l4_proto); |
| 7481 | + retval = -EIO; |
| 7482 | + goto return_error; |
| 7483 | + } |
| 7484 | + |
| 7485 | + /* At index 0 is IPOffset_1 as defined in the Parse Results */ |
| 7486 | + parse_result->ip_off[0] = (uint8_t)skb_network_offset(skb); |
| 7487 | + parse_result->l4_off = (uint8_t)skb_transport_offset(skb); |
| 7488 | + |
| 7489 | + /* Enable L3 (and L4, if TCP or UDP) HW checksum. */ |
| 7490 | + fd->cmd |= FM_FD_CMD_RPD | FM_FD_CMD_DTC; |
| 7491 | + |
| 7492 | + /* On P1023 and similar platforms fd->cmd interpretation could |
| 7493 | + * be disabled by setting CONTEXT_A bit ICMD; currently this bit |
| 7494 | + * is not set so we do not need to check; in the future, if/when |
| 7495 | + * using context_a we need to check this bit |
| 7496 | + */ |
| 7497 | + |
| 7498 | +return_error: |
| 7499 | + return retval; |
| 7500 | +} |
| 7501 | +EXPORT_SYMBOL(dpa_enable_tx_csum); |
| 7502 | + |
| 7503 | +#ifdef CONFIG_FSL_DPAA_CEETM |
| 7504 | +void dpa_enable_ceetm(struct net_device *dev) |
| 7505 | +{ |
| 7506 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 7507 | + priv->ceetm_en = true; |
| 7508 | +} |
| 7509 | +EXPORT_SYMBOL(dpa_enable_ceetm); |
| 7510 | + |
| 7511 | +void dpa_disable_ceetm(struct net_device *dev) |
| 7512 | +{ |
| 7513 | + struct dpa_priv_s *priv = netdev_priv(dev); |
| 7514 | + priv->ceetm_en = false; |
| 7515 | +} |
| 7516 | +EXPORT_SYMBOL(dpa_disable_ceetm); |
| 7517 | +#endif |
| 7518 | --- /dev/null |
| 7519 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h |
| 7520 | @@ -0,0 +1,226 @@ |
| 7521 | +/* Copyright 2008-2013 Freescale Semiconductor, Inc. |
| 7522 | + * |
| 7523 | + * Redistribution and use in source and binary forms, with or without |
| 7524 | + * modification, are permitted provided that the following conditions are met: |
| 7525 | + * * Redistributions of source code must retain the above copyright |
| 7526 | + * notice, this list of conditions and the following disclaimer. |
| 7527 | + * * Redistributions in binary form must reproduce the above copyright |
| 7528 | + * notice, this list of conditions and the following disclaimer in the |
| 7529 | + * documentation and/or other materials provided with the distribution. |
| 7530 | + * * Neither the name of Freescale Semiconductor nor the |
| 7531 | + * names of its contributors may be used to endorse or promote products |
| 7532 | + * derived from this software without specific prior written permission. |
| 7533 | + * |
| 7534 | + * |
| 7535 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 7536 | + * GNU General Public License ("GPL") as published by the Free Software |
| 7537 | + * Foundation, either version 2 of that License or (at your option) any |
| 7538 | + * later version. |
| 7539 | + * |
| 7540 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 7541 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 7542 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 7543 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 7544 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 7545 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 7546 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 7547 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 7548 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 7549 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 7550 | + */ |
| 7551 | + |
| 7552 | +#ifndef __DPAA_ETH_COMMON_H |
| 7553 | +#define __DPAA_ETH_COMMON_H |
| 7554 | + |
| 7555 | +#include <linux/etherdevice.h> /* struct net_device */ |
| 7556 | +#include <linux/fsl_bman.h> /* struct bm_buffer */ |
| 7557 | +#include <linux/of_platform.h> /* struct platform_device */ |
| 7558 | +#include <linux/net_tstamp.h> /* struct hwtstamp_config */ |
| 7559 | + |
| 7560 | +#include "dpaa_eth.h" |
| 7561 | +#include "lnxwrp_fsl_fman.h" |
| 7562 | + |
| 7563 | +#define dpaa_eth_init_port(type, port, param, errq_id, defq_id, buf_layout,\ |
| 7564 | + frag_enabled) \ |
| 7565 | +{ \ |
| 7566 | + param.errq = errq_id; \ |
| 7567 | + param.defq = defq_id; \ |
| 7568 | + param.priv_data_size = buf_layout->priv_data_size; \ |
| 7569 | + param.parse_results = buf_layout->parse_results; \ |
| 7570 | + param.hash_results = buf_layout->hash_results; \ |
| 7571 | + param.frag_enable = frag_enabled; \ |
| 7572 | + param.time_stamp = buf_layout->time_stamp; \ |
| 7573 | + param.manip_extra_space = buf_layout->manip_extra_space; \ |
| 7574 | + param.data_align = buf_layout->data_align; \ |
| 7575 | + fm_set_##type##_port_params(port, ¶m); \ |
| 7576 | +} |
| 7577 | + |
| 7578 | +#define DPA_SGT_MAX_ENTRIES 16 /* maximum number of entries in SG Table */ |
| 7579 | + |
| 7580 | +#define DPA_SGT_ENTRIES_THRESHOLD DPA_SGT_MAX_ENTRIES |
| 7581 | + |
| 7582 | +#define DPA_BUFF_RELEASE_MAX 8 /* maximum number of buffers released at once */ |
| 7583 | + |
| 7584 | +#define DPA_RX_PCD_HI_PRIO_FQ_INIT_FAIL(dpa_fq, _errno) \ |
| 7585 | + (((dpa_fq)->fq_type == FQ_TYPE_RX_PCD_HI_PRIO) && \ |
| 7586 | + (_errno == -EIO)) |
| 7587 | +/* return codes for the dpaa-eth hooks */ |
| 7588 | +enum dpaa_eth_hook_result { |
| 7589 | + /* fd/skb was retained by the hook. |
| 7590 | + * |
| 7591 | + * On the Rx path, this means the Ethernet driver will _not_ |
| 7592 | + * deliver the skb to the stack. Instead, the hook implementation |
| 7593 | + * is expected to properly dispose of the skb. |
| 7594 | + * |
| 7595 | + * On the Tx path, the Ethernet driver's dpa_tx() function will |
| 7596 | + * immediately return NETDEV_TX_OK. The hook implementation is expected |
| 7597 | + * to free the skb. *DO*NOT* release it to BMan, or enqueue it to FMan, |
| 7598 | + * unless you know exactly what you're doing! |
| 7599 | + * |
| 7600 | + * On the confirmation/error paths, the Ethernet driver will _not_ |
| 7601 | + * perform any fd cleanup, nor update the interface statistics. |
| 7602 | + */ |
| 7603 | + DPAA_ETH_STOLEN, |
| 7604 | + /* fd/skb was returned to the Ethernet driver for regular processing. |
| 7605 | + * The hook is not allowed to, for instance, reallocate the skb (as if |
| 7606 | + * by linearizing, copying, cloning or reallocating the headroom). |
| 7607 | + */ |
| 7608 | + DPAA_ETH_CONTINUE |
| 7609 | +}; |
| 7610 | + |
| 7611 | +typedef enum dpaa_eth_hook_result (*dpaa_eth_ingress_hook_t)( |
| 7612 | + struct sk_buff *skb, struct net_device *net_dev, u32 fqid); |
| 7613 | +typedef enum dpaa_eth_hook_result (*dpaa_eth_egress_hook_t)( |
| 7614 | + struct sk_buff *skb, struct net_device *net_dev); |
| 7615 | +typedef enum dpaa_eth_hook_result (*dpaa_eth_confirm_hook_t)( |
| 7616 | + struct net_device *net_dev, const struct qm_fd *fd, u32 fqid); |
| 7617 | + |
| 7618 | +/* used in napi related functions */ |
| 7619 | +extern u16 qman_portal_max; |
| 7620 | + |
| 7621 | +/* from dpa_ethtool.c */ |
| 7622 | +extern const struct ethtool_ops dpa_ethtool_ops; |
| 7623 | + |
| 7624 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 7625 | +/* Various hooks used for unit-testing and/or fastpath optimizations. |
| 7626 | + * Currently only one set of such hooks is supported. |
| 7627 | + */ |
| 7628 | +struct dpaa_eth_hooks_s { |
| 7629 | + /* Invoked on the Tx private path, immediately after receiving the skb |
| 7630 | + * from the stack. |
| 7631 | + */ |
| 7632 | + dpaa_eth_egress_hook_t tx; |
| 7633 | + |
| 7634 | + /* Invoked on the Rx private path, right before passing the skb |
| 7635 | + * up the stack. At that point, the packet's protocol id has already |
| 7636 | + * been set. The skb's data pointer is now at the L3 header, and |
| 7637 | + * skb->mac_header points to the L2 header. skb->len has been adjusted |
| 7638 | + * to be the length of L3+payload (i.e., the length of the |
| 7639 | + * original frame minus the L2 header len). |
| 7640 | + * For more details on what the skb looks like, see eth_type_trans(). |
| 7641 | + */ |
| 7642 | + dpaa_eth_ingress_hook_t rx_default; |
| 7643 | + |
| 7644 | + /* Driver hook for the Rx error private path. */ |
| 7645 | + dpaa_eth_confirm_hook_t rx_error; |
| 7646 | + /* Driver hook for the Tx confirmation private path. */ |
| 7647 | + dpaa_eth_confirm_hook_t tx_confirm; |
| 7648 | + /* Driver hook for the Tx error private path. */ |
| 7649 | + dpaa_eth_confirm_hook_t tx_error; |
| 7650 | +}; |
| 7651 | + |
| 7652 | +void fsl_dpaa_eth_set_hooks(struct dpaa_eth_hooks_s *hooks); |
| 7653 | + |
| 7654 | +extern struct dpaa_eth_hooks_s dpaa_eth_hooks; |
| 7655 | +#endif |
| 7656 | + |
| 7657 | +int dpa_netdev_init(struct net_device *net_dev, |
| 7658 | + const uint8_t *mac_addr, |
| 7659 | + uint16_t tx_timeout); |
| 7660 | +int __cold dpa_start(struct net_device *net_dev); |
| 7661 | +int __cold dpa_stop(struct net_device *net_dev); |
| 7662 | +void __cold dpa_timeout(struct net_device *net_dev); |
| 7663 | +void __cold |
| 7664 | +dpa_get_stats64(struct net_device *net_dev, |
| 7665 | + struct rtnl_link_stats64 *stats); |
| 7666 | +int dpa_change_mtu(struct net_device *net_dev, int new_mtu); |
| 7667 | +int dpa_ndo_init(struct net_device *net_dev); |
| 7668 | +int dpa_set_features(struct net_device *dev, netdev_features_t features); |
| 7669 | +netdev_features_t dpa_fix_features(struct net_device *dev, |
| 7670 | + netdev_features_t features); |
| 7671 | +#ifdef CONFIG_FSL_DPAA_TS |
| 7672 | +u64 dpa_get_timestamp_ns(const struct dpa_priv_s *priv, |
| 7673 | + enum port_type rx_tx, const void *data); |
| 7674 | +/* Updates the skb shared hw timestamp from the hardware timestamp */ |
| 7675 | +int dpa_get_ts(const struct dpa_priv_s *priv, enum port_type rx_tx, |
| 7676 | + struct skb_shared_hwtstamps *shhwtstamps, const void *data); |
| 7677 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 7678 | +int dpa_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 7679 | +int __cold dpa_remove(struct platform_device *of_dev); |
| 7680 | +struct mac_device * __cold __must_check |
| 7681 | +__attribute__((nonnull)) dpa_mac_probe(struct platform_device *_of_dev); |
| 7682 | +int dpa_set_mac_address(struct net_device *net_dev, void *addr); |
| 7683 | +void dpa_set_rx_mode(struct net_device *net_dev); |
| 7684 | +void dpa_set_buffers_layout(struct mac_device *mac_dev, |
| 7685 | + struct dpa_buffer_layout_s *layout); |
| 7686 | +int __attribute__((nonnull)) |
| 7687 | +dpa_bp_alloc(struct dpa_bp *dpa_bp); |
| 7688 | +void __cold __attribute__((nonnull)) |
| 7689 | +dpa_bp_free(struct dpa_priv_s *priv); |
| 7690 | +struct dpa_bp *dpa_bpid2pool(int bpid); |
| 7691 | +void dpa_bpid2pool_map(int bpid, struct dpa_bp *dpa_bp); |
| 7692 | +bool dpa_bpid2pool_use(int bpid); |
| 7693 | +void dpa_bp_drain(struct dpa_bp *bp); |
| 7694 | +#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE |
| 7695 | +u16 dpa_select_queue(struct net_device *net_dev, struct sk_buff *skb, |
| 7696 | + struct net_device *sb_dev, |
| 7697 | + select_queue_fallback_t fallback); |
| 7698 | +#endif |
| 7699 | +struct dpa_fq *dpa_fq_alloc(struct device *dev, |
| 7700 | + u32 fq_start, |
| 7701 | + u32 fq_count, |
| 7702 | + struct list_head *list, |
| 7703 | + enum dpa_fq_type fq_type); |
| 7704 | +int dpa_fq_probe_mac(struct device *dev, struct list_head *list, |
| 7705 | + struct fm_port_fqs *port_fqs, |
| 7706 | + bool tx_conf_fqs_per_core, |
| 7707 | + enum port_type ptype); |
| 7708 | +int dpa_get_channel(void); |
| 7709 | +void dpa_release_channel(void); |
| 7710 | +void dpaa_eth_add_channel(u16 channel); |
| 7711 | +int dpaa_eth_cgr_init(struct dpa_priv_s *priv); |
| 7712 | +void dpa_fq_setup(struct dpa_priv_s *priv, const struct dpa_fq_cbs_t *fq_cbs, |
| 7713 | + struct fm_port *tx_port); |
| 7714 | +int dpa_fq_init(struct dpa_fq *dpa_fq, bool td_enable); |
| 7715 | +int dpa_fqs_init(struct device *dev, struct list_head *list, bool td_enable); |
| 7716 | +int __cold __attribute__((nonnull)) |
| 7717 | +dpa_fq_free(struct device *dev, struct list_head *list); |
| 7718 | +void dpaa_eth_init_ports(struct mac_device *mac_dev, |
| 7719 | + struct dpa_bp *bp, size_t count, |
| 7720 | + struct fm_port_fqs *port_fqs, |
| 7721 | + struct dpa_buffer_layout_s *buf_layout, |
| 7722 | + struct device *dev); |
| 7723 | +void dpa_release_sgt(struct qm_sg_entry *sgt); |
| 7724 | +void __attribute__((nonnull)) |
| 7725 | +dpa_fd_release(const struct net_device *net_dev, const struct qm_fd *fd); |
| 7726 | +void count_ern(struct dpa_percpu_priv_s *percpu_priv, |
| 7727 | + const struct qm_mr_entry *msg); |
| 7728 | +int dpa_enable_tx_csum(struct dpa_priv_s *priv, |
| 7729 | + struct sk_buff *skb, struct qm_fd *fd, char *parse_results); |
| 7730 | +#ifdef CONFIG_FSL_DPAA_CEETM |
| 7731 | +void dpa_enable_ceetm(struct net_device *dev); |
| 7732 | +void dpa_disable_ceetm(struct net_device *dev); |
| 7733 | +#endif |
| 7734 | +struct proxy_device { |
| 7735 | + struct mac_device *mac_dev; |
| 7736 | +}; |
| 7737 | + |
| 7738 | +/* mac device control functions exposed by proxy interface*/ |
| 7739 | +int dpa_proxy_start(struct net_device *net_dev); |
| 7740 | +int dpa_proxy_stop(struct proxy_device *proxy_dev, struct net_device *net_dev); |
| 7741 | +int dpa_proxy_set_mac_address(struct proxy_device *proxy_dev, |
| 7742 | + struct net_device *net_dev); |
| 7743 | +int dpa_proxy_set_rx_mode(struct proxy_device *proxy_dev, |
| 7744 | + struct net_device *net_dev); |
| 7745 | + |
| 7746 | +#endif /* __DPAA_ETH_COMMON_H */ |
| 7747 | --- /dev/null |
| 7748 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c |
| 7749 | @@ -0,0 +1,381 @@ |
| 7750 | +/* Copyright 2008-2013 Freescale Semiconductor Inc. |
| 7751 | + * |
| 7752 | + * Redistribution and use in source and binary forms, with or without |
| 7753 | + * modification, are permitted provided that the following conditions are met: |
| 7754 | + * * Redistributions of source code must retain the above copyright |
| 7755 | + * notice, this list of conditions and the following disclaimer. |
| 7756 | + * * Redistributions in binary form must reproduce the above copyright |
| 7757 | + * notice, this list of conditions and the following disclaimer in the |
| 7758 | + * documentation and/or other materials provided with the distribution. |
| 7759 | + * * Neither the name of Freescale Semiconductor nor the |
| 7760 | + * names of its contributors may be used to endorse or promote products |
| 7761 | + * derived from this software without specific prior written permission. |
| 7762 | + * |
| 7763 | + * |
| 7764 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 7765 | + * GNU General Public License ("GPL") as published by the Free Software |
| 7766 | + * Foundation, either version 2 of that License or (at your option) any |
| 7767 | + * later version. |
| 7768 | + * |
| 7769 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 7770 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 7771 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 7772 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 7773 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 7774 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 7775 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 7776 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 7777 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 7778 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 7779 | + */ |
| 7780 | + |
| 7781 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 7782 | +#define pr_fmt(fmt) \ |
| 7783 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 7784 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 7785 | +#else |
| 7786 | +#define pr_fmt(fmt) \ |
| 7787 | + KBUILD_MODNAME ": " fmt |
| 7788 | +#endif |
| 7789 | + |
| 7790 | +#include <linux/init.h> |
| 7791 | +#include <linux/module.h> |
| 7792 | +#include <linux/of_platform.h> |
| 7793 | +#include "dpaa_eth.h" |
| 7794 | +#include "dpaa_eth_common.h" |
| 7795 | +#include "dpaa_eth_base.h" |
| 7796 | +#include "lnxwrp_fsl_fman.h" /* fm_get_rx_extra_headroom(), fm_get_max_frm() */ |
| 7797 | +#include "mac.h" |
| 7798 | + |
| 7799 | +#define DPA_DESCRIPTION "FSL DPAA Proxy initialization driver" |
| 7800 | + |
| 7801 | +MODULE_LICENSE("Dual BSD/GPL"); |
| 7802 | + |
| 7803 | +MODULE_DESCRIPTION(DPA_DESCRIPTION); |
| 7804 | + |
| 7805 | +static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev); |
| 7806 | +#ifdef CONFIG_PM |
| 7807 | + |
| 7808 | +static int proxy_suspend(struct device *dev) |
| 7809 | +{ |
| 7810 | + struct proxy_device *proxy_dev = dev_get_drvdata(dev); |
| 7811 | + struct mac_device *mac_dev = proxy_dev->mac_dev; |
| 7812 | + int err = 0; |
| 7813 | + |
| 7814 | + err = fm_port_suspend(mac_dev->port_dev[RX]); |
| 7815 | + if (err) |
| 7816 | + goto port_suspend_failed; |
| 7817 | + |
| 7818 | + err = fm_port_suspend(mac_dev->port_dev[TX]); |
| 7819 | + if (err) |
| 7820 | + err = fm_port_resume(mac_dev->port_dev[RX]); |
| 7821 | + |
| 7822 | +port_suspend_failed: |
| 7823 | + return err; |
| 7824 | +} |
| 7825 | + |
| 7826 | +static int proxy_resume(struct device *dev) |
| 7827 | +{ |
| 7828 | + struct proxy_device *proxy_dev = dev_get_drvdata(dev); |
| 7829 | + struct mac_device *mac_dev = proxy_dev->mac_dev; |
| 7830 | + int err = 0; |
| 7831 | + |
| 7832 | + err = fm_port_resume(mac_dev->port_dev[TX]); |
| 7833 | + if (err) |
| 7834 | + goto port_resume_failed; |
| 7835 | + |
| 7836 | + err = fm_port_resume(mac_dev->port_dev[RX]); |
| 7837 | + if (err) |
| 7838 | + err = fm_port_suspend(mac_dev->port_dev[TX]); |
| 7839 | + |
| 7840 | +port_resume_failed: |
| 7841 | + return err; |
| 7842 | +} |
| 7843 | + |
| 7844 | +static const struct dev_pm_ops proxy_pm_ops = { |
| 7845 | + .suspend = proxy_suspend, |
| 7846 | + .resume = proxy_resume, |
| 7847 | +}; |
| 7848 | + |
| 7849 | +#define PROXY_PM_OPS (&proxy_pm_ops) |
| 7850 | + |
| 7851 | +#else /* CONFIG_PM */ |
| 7852 | + |
| 7853 | +#define PROXY_PM_OPS NULL |
| 7854 | + |
| 7855 | +#endif /* CONFIG_PM */ |
| 7856 | + |
| 7857 | +static int dpaa_eth_proxy_probe(struct platform_device *_of_dev) |
| 7858 | +{ |
| 7859 | + int err = 0, i; |
| 7860 | + struct device *dev; |
| 7861 | + struct device_node *dpa_node; |
| 7862 | + struct dpa_bp *dpa_bp; |
| 7863 | + struct list_head proxy_fq_list; |
| 7864 | + size_t count; |
| 7865 | + struct fm_port_fqs port_fqs; |
| 7866 | + struct dpa_buffer_layout_s *buf_layout = NULL; |
| 7867 | + struct mac_device *mac_dev; |
| 7868 | + struct proxy_device *proxy_dev; |
| 7869 | + |
| 7870 | + dev = &_of_dev->dev; |
| 7871 | + |
| 7872 | + dpa_node = dev->of_node; |
| 7873 | + |
| 7874 | + if (!of_device_is_available(dpa_node)) |
| 7875 | + return -ENODEV; |
| 7876 | + |
| 7877 | + /* Get the buffer pools assigned to this interface */ |
| 7878 | + dpa_bp = dpa_bp_probe(_of_dev, &count); |
| 7879 | + if (IS_ERR(dpa_bp)) |
| 7880 | + return PTR_ERR(dpa_bp); |
| 7881 | + |
| 7882 | + mac_dev = dpa_mac_probe(_of_dev); |
| 7883 | + if (IS_ERR(mac_dev)) |
| 7884 | + return PTR_ERR(mac_dev); |
| 7885 | + |
| 7886 | + proxy_dev = devm_kzalloc(dev, sizeof(*proxy_dev), GFP_KERNEL); |
| 7887 | + if (!proxy_dev) { |
| 7888 | + dev_err(dev, "devm_kzalloc() failed\n"); |
| 7889 | + return -ENOMEM; |
| 7890 | + } |
| 7891 | + |
| 7892 | + proxy_dev->mac_dev = mac_dev; |
| 7893 | + dev_set_drvdata(dev, proxy_dev); |
| 7894 | + |
| 7895 | + /* We have physical ports, so we need to establish |
| 7896 | + * the buffer layout. |
| 7897 | + */ |
| 7898 | + buf_layout = devm_kzalloc(dev, 2 * sizeof(*buf_layout), |
| 7899 | + GFP_KERNEL); |
| 7900 | + if (!buf_layout) { |
| 7901 | + dev_err(dev, "devm_kzalloc() failed\n"); |
| 7902 | + return -ENOMEM; |
| 7903 | + } |
| 7904 | + dpa_set_buffers_layout(mac_dev, buf_layout); |
| 7905 | + |
| 7906 | + INIT_LIST_HEAD(&proxy_fq_list); |
| 7907 | + |
| 7908 | + memset(&port_fqs, 0, sizeof(port_fqs)); |
| 7909 | + |
| 7910 | + err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true, RX); |
| 7911 | + if (!err) |
| 7912 | + err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true, |
| 7913 | + TX); |
| 7914 | + if (err < 0) { |
| 7915 | + devm_kfree(dev, buf_layout); |
| 7916 | + return err; |
| 7917 | + } |
| 7918 | + |
| 7919 | + /* Proxy initializer - Just configures the MAC on behalf of |
| 7920 | + * another partition. |
| 7921 | + */ |
| 7922 | + dpaa_eth_init_ports(mac_dev, dpa_bp, count, &port_fqs, |
| 7923 | + buf_layout, dev); |
| 7924 | + |
| 7925 | + /* Proxy interfaces need to be started, and the allocated |
| 7926 | + * memory freed |
| 7927 | + */ |
| 7928 | + devm_kfree(dev, buf_layout); |
| 7929 | + devm_kfree(dev, dpa_bp); |
| 7930 | + |
| 7931 | + /* Free FQ structures */ |
| 7932 | + devm_kfree(dev, port_fqs.rx_defq); |
| 7933 | + devm_kfree(dev, port_fqs.rx_errq); |
| 7934 | + devm_kfree(dev, port_fqs.tx_defq); |
| 7935 | + devm_kfree(dev, port_fqs.tx_errq); |
| 7936 | + |
| 7937 | + for_each_port_device(i, mac_dev->port_dev) { |
| 7938 | + err = fm_port_enable(mac_dev->port_dev[i]); |
| 7939 | + if (err) |
| 7940 | + goto port_enable_fail; |
| 7941 | + } |
| 7942 | + |
| 7943 | + dev_info(dev, "probed MAC device with MAC address: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n", |
| 7944 | + mac_dev->addr[0], mac_dev->addr[1], mac_dev->addr[2], |
| 7945 | + mac_dev->addr[3], mac_dev->addr[4], mac_dev->addr[5]); |
| 7946 | + |
| 7947 | + return 0; /* Proxy interface initialization ended */ |
| 7948 | + |
| 7949 | +port_enable_fail: |
| 7950 | + for_each_port_device(i, mac_dev->port_dev) |
| 7951 | + fm_port_disable(mac_dev->port_dev[i]); |
| 7952 | + dpa_eth_proxy_remove(_of_dev); |
| 7953 | + |
| 7954 | + return err; |
| 7955 | +} |
| 7956 | + |
| 7957 | +int dpa_proxy_set_mac_address(struct proxy_device *proxy_dev, |
| 7958 | + struct net_device *net_dev) |
| 7959 | +{ |
| 7960 | + struct mac_device *mac_dev; |
| 7961 | + int _errno; |
| 7962 | + |
| 7963 | + mac_dev = proxy_dev->mac_dev; |
| 7964 | + |
| 7965 | + _errno = mac_dev->change_addr(mac_dev->get_mac_handle(mac_dev), |
| 7966 | + net_dev->dev_addr); |
| 7967 | + if (_errno < 0) |
| 7968 | + return _errno; |
| 7969 | + |
| 7970 | + return 0; |
| 7971 | +} |
| 7972 | +EXPORT_SYMBOL(dpa_proxy_set_mac_address); |
| 7973 | + |
| 7974 | +int dpa_proxy_set_rx_mode(struct proxy_device *proxy_dev, |
| 7975 | + struct net_device *net_dev) |
| 7976 | +{ |
| 7977 | + struct mac_device *mac_dev = proxy_dev->mac_dev; |
| 7978 | + int _errno; |
| 7979 | + |
| 7980 | + if (!!(net_dev->flags & IFF_PROMISC) != mac_dev->promisc) { |
| 7981 | + mac_dev->promisc = !mac_dev->promisc; |
| 7982 | + _errno = mac_dev->set_promisc(mac_dev->get_mac_handle(mac_dev), |
| 7983 | + mac_dev->promisc); |
| 7984 | + if (unlikely(_errno < 0)) |
| 7985 | + netdev_err(net_dev, "mac_dev->set_promisc() = %d\n", |
| 7986 | + _errno); |
| 7987 | + } |
| 7988 | + |
| 7989 | + _errno = mac_dev->set_multi(net_dev, mac_dev); |
| 7990 | + if (unlikely(_errno < 0)) |
| 7991 | + return _errno; |
| 7992 | + |
| 7993 | + return 0; |
| 7994 | +} |
| 7995 | +EXPORT_SYMBOL(dpa_proxy_set_rx_mode); |
| 7996 | + |
| 7997 | +int dpa_proxy_start(struct net_device *net_dev) |
| 7998 | +{ |
| 7999 | + struct mac_device *mac_dev; |
| 8000 | + const struct dpa_priv_s *priv; |
| 8001 | + struct proxy_device *proxy_dev; |
| 8002 | + int _errno; |
| 8003 | + int i; |
| 8004 | + |
| 8005 | + priv = netdev_priv(net_dev); |
| 8006 | + proxy_dev = (struct proxy_device *)priv->peer; |
| 8007 | + mac_dev = proxy_dev->mac_dev; |
| 8008 | + |
| 8009 | + _errno = mac_dev->init_phy(net_dev, mac_dev); |
| 8010 | + if (_errno < 0) { |
| 8011 | + if (netif_msg_drv(priv)) |
| 8012 | + netdev_err(net_dev, "init_phy() = %d\n", |
| 8013 | + _errno); |
| 8014 | + return _errno; |
| 8015 | + } |
| 8016 | + |
| 8017 | + for_each_port_device(i, mac_dev->port_dev) { |
| 8018 | + _errno = fm_port_enable(mac_dev->port_dev[i]); |
| 8019 | + if (_errno) |
| 8020 | + goto port_enable_fail; |
| 8021 | + } |
| 8022 | + |
| 8023 | + _errno = mac_dev->start(mac_dev); |
| 8024 | + if (_errno < 0) { |
| 8025 | + if (netif_msg_drv(priv)) |
| 8026 | + netdev_err(net_dev, "mac_dev->start() = %d\n", |
| 8027 | + _errno); |
| 8028 | + goto port_enable_fail; |
| 8029 | + } |
| 8030 | + |
| 8031 | + return _errno; |
| 8032 | + |
| 8033 | +port_enable_fail: |
| 8034 | + for_each_port_device(i, mac_dev->port_dev) |
| 8035 | + fm_port_disable(mac_dev->port_dev[i]); |
| 8036 | + |
| 8037 | + return _errno; |
| 8038 | +} |
| 8039 | +EXPORT_SYMBOL(dpa_proxy_start); |
| 8040 | + |
| 8041 | +int dpa_proxy_stop(struct proxy_device *proxy_dev, struct net_device *net_dev) |
| 8042 | +{ |
| 8043 | + struct mac_device *mac_dev = proxy_dev->mac_dev; |
| 8044 | + const struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 8045 | + int _errno, i, err; |
| 8046 | + |
| 8047 | + _errno = mac_dev->stop(mac_dev); |
| 8048 | + if (_errno < 0) { |
| 8049 | + if (netif_msg_drv(priv)) |
| 8050 | + netdev_err(net_dev, "mac_dev->stop() = %d\n", |
| 8051 | + _errno); |
| 8052 | + return _errno; |
| 8053 | + } |
| 8054 | + |
| 8055 | + for_each_port_device(i, mac_dev->port_dev) { |
| 8056 | + err = fm_port_disable(mac_dev->port_dev[i]); |
| 8057 | + _errno = err ? err : _errno; |
| 8058 | + } |
| 8059 | + |
| 8060 | + if (mac_dev->phy_dev) |
| 8061 | + phy_disconnect(mac_dev->phy_dev); |
| 8062 | + mac_dev->phy_dev = NULL; |
| 8063 | + |
| 8064 | + return _errno; |
| 8065 | +} |
| 8066 | +EXPORT_SYMBOL(dpa_proxy_stop); |
| 8067 | + |
| 8068 | +static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev) |
| 8069 | +{ |
| 8070 | + struct device *dev = &of_dev->dev; |
| 8071 | + struct proxy_device *proxy_dev = dev_get_drvdata(dev); |
| 8072 | + |
| 8073 | + kfree(proxy_dev); |
| 8074 | + |
| 8075 | + dev_set_drvdata(dev, NULL); |
| 8076 | + |
| 8077 | + return 0; |
| 8078 | +} |
| 8079 | + |
| 8080 | +static const struct of_device_id dpa_proxy_match[] = { |
| 8081 | + { |
| 8082 | + .compatible = "fsl,dpa-ethernet-init" |
| 8083 | + }, |
| 8084 | + {} |
| 8085 | +}; |
| 8086 | +MODULE_DEVICE_TABLE(of, dpa_proxy_match); |
| 8087 | + |
| 8088 | +static struct platform_driver dpa_proxy_driver = { |
| 8089 | + .driver = { |
| 8090 | + .name = KBUILD_MODNAME "-proxy", |
| 8091 | + .of_match_table = dpa_proxy_match, |
| 8092 | + .owner = THIS_MODULE, |
| 8093 | + .pm = PROXY_PM_OPS, |
| 8094 | + }, |
| 8095 | + .probe = dpaa_eth_proxy_probe, |
| 8096 | + .remove = dpa_eth_proxy_remove |
| 8097 | +}; |
| 8098 | + |
| 8099 | +static int __init __cold dpa_proxy_load(void) |
| 8100 | +{ |
| 8101 | + int _errno; |
| 8102 | + |
| 8103 | + pr_info(DPA_DESCRIPTION "\n"); |
| 8104 | + |
| 8105 | + /* Initialize dpaa_eth mirror values */ |
| 8106 | + dpa_rx_extra_headroom = fm_get_rx_extra_headroom(); |
| 8107 | + dpa_max_frm = fm_get_max_frm(); |
| 8108 | + |
| 8109 | + _errno = platform_driver_register(&dpa_proxy_driver); |
| 8110 | + if (unlikely(_errno < 0)) { |
| 8111 | + pr_err(KBUILD_MODNAME |
| 8112 | + ": %s:%hu:%s(): platform_driver_register() = %d\n", |
| 8113 | + KBUILD_BASENAME".c", __LINE__, __func__, _errno); |
| 8114 | + } |
| 8115 | + |
| 8116 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 8117 | + KBUILD_BASENAME".c", __func__); |
| 8118 | + |
| 8119 | + return _errno; |
| 8120 | +} |
| 8121 | +module_init(dpa_proxy_load); |
| 8122 | + |
| 8123 | +static void __exit __cold dpa_proxy_unload(void) |
| 8124 | +{ |
| 8125 | + platform_driver_unregister(&dpa_proxy_driver); |
| 8126 | + |
| 8127 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 8128 | + KBUILD_BASENAME".c", __func__); |
| 8129 | +} |
| 8130 | +module_exit(dpa_proxy_unload); |
| 8131 | --- /dev/null |
| 8132 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c |
| 8133 | @@ -0,0 +1,1113 @@ |
| 8134 | +/* Copyright 2012 Freescale Semiconductor Inc. |
| 8135 | + * |
| 8136 | + * Redistribution and use in source and binary forms, with or without |
| 8137 | + * modification, are permitted provided that the following conditions are met: |
| 8138 | + * * Redistributions of source code must retain the above copyright |
| 8139 | + * notice, this list of conditions and the following disclaimer. |
| 8140 | + * * Redistributions in binary form must reproduce the above copyright |
| 8141 | + * notice, this list of conditions and the following disclaimer in the |
| 8142 | + * documentation and/or other materials provided with the distribution. |
| 8143 | + * * Neither the name of Freescale Semiconductor nor the |
| 8144 | + * names of its contributors may be used to endorse or promote products |
| 8145 | + * derived from this software without specific prior written permission. |
| 8146 | + * |
| 8147 | + * |
| 8148 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 8149 | + * GNU General Public License ("GPL") as published by the Free Software |
| 8150 | + * Foundation, either version 2 of that License or (at your option) any |
| 8151 | + * later version. |
| 8152 | + * |
| 8153 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 8154 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 8155 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 8156 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 8157 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 8158 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 8159 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 8160 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 8161 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 8162 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 8163 | + */ |
| 8164 | + |
| 8165 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 8166 | +#define pr_fmt(fmt) \ |
| 8167 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 8168 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 8169 | +#else |
| 8170 | +#define pr_fmt(fmt) \ |
| 8171 | + KBUILD_MODNAME ": " fmt |
| 8172 | +#endif |
| 8173 | + |
| 8174 | +#include <linux/init.h> |
| 8175 | +#include <linux/skbuff.h> |
| 8176 | +#include <linux/highmem.h> |
| 8177 | +#include <linux/fsl_bman.h> |
| 8178 | + |
| 8179 | +#include "dpaa_eth.h" |
| 8180 | +#include "dpaa_eth_common.h" |
| 8181 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 8182 | +#include "dpaa_1588.h" |
| 8183 | +#endif |
| 8184 | +#ifdef CONFIG_FSL_DPAA_CEETM |
| 8185 | +#include "dpaa_eth_ceetm.h" |
| 8186 | +#endif |
| 8187 | + |
| 8188 | +/* DMA map and add a page frag back into the bpool. |
| 8189 | + * @vaddr fragment must have been allocated with netdev_alloc_frag(), |
| 8190 | + * specifically for fitting into @dpa_bp. |
| 8191 | + */ |
| 8192 | +static void dpa_bp_recycle_frag(struct dpa_bp *dpa_bp, unsigned long vaddr, |
| 8193 | + int *count_ptr) |
| 8194 | +{ |
| 8195 | + struct bm_buffer bmb; |
| 8196 | + dma_addr_t addr; |
| 8197 | + |
| 8198 | + bmb.opaque = 0; |
| 8199 | + |
| 8200 | + addr = dma_map_single(dpa_bp->dev, (void *)vaddr, dpa_bp->size, |
| 8201 | + DMA_BIDIRECTIONAL); |
| 8202 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 8203 | + dev_err(dpa_bp->dev, "DMA mapping failed"); |
| 8204 | + return; |
| 8205 | + } |
| 8206 | + |
| 8207 | + bm_buffer_set64(&bmb, addr); |
| 8208 | + |
| 8209 | + while (bman_release(dpa_bp->pool, &bmb, 1, 0)) |
| 8210 | + cpu_relax(); |
| 8211 | + |
| 8212 | + (*count_ptr)++; |
| 8213 | +} |
| 8214 | + |
| 8215 | +static int _dpa_bp_add_8_bufs(const struct dpa_bp *dpa_bp) |
| 8216 | +{ |
| 8217 | + struct bm_buffer bmb[8]; |
| 8218 | + void *new_buf; |
| 8219 | + dma_addr_t addr; |
| 8220 | + uint8_t i; |
| 8221 | + struct device *dev = dpa_bp->dev; |
| 8222 | + struct sk_buff *skb, **skbh; |
| 8223 | + |
| 8224 | + memset(bmb, 0, sizeof(struct bm_buffer) * 8); |
| 8225 | + |
| 8226 | + for (i = 0; i < 8; i++) { |
| 8227 | + /* We'll prepend the skb back-pointer; can't use the DPA |
| 8228 | + * priv space, because FMan will overwrite it (from offset 0) |
| 8229 | + * if it ends up being the second, third, etc. fragment |
| 8230 | + * in a S/G frame. |
| 8231 | + * |
| 8232 | + * We only need enough space to store a pointer, but allocate |
| 8233 | + * an entire cacheline for performance reasons. |
| 8234 | + */ |
| 8235 | +#ifndef CONFIG_PPC |
| 8236 | + if (unlikely(dpaa_errata_a010022)) |
| 8237 | + new_buf = page_address(alloc_page(GFP_ATOMIC)); |
| 8238 | + else |
| 8239 | +#endif |
| 8240 | + new_buf = netdev_alloc_frag(SMP_CACHE_BYTES + DPA_BP_RAW_SIZE); |
| 8241 | + |
| 8242 | + if (unlikely(!new_buf)) |
| 8243 | + goto netdev_alloc_failed; |
| 8244 | + new_buf = PTR_ALIGN(new_buf + SMP_CACHE_BYTES, SMP_CACHE_BYTES); |
| 8245 | + |
| 8246 | + skb = build_skb(new_buf, DPA_SKB_SIZE(dpa_bp->size) + |
| 8247 | + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); |
| 8248 | + if (unlikely(!skb)) { |
| 8249 | + put_page(virt_to_head_page(new_buf)); |
| 8250 | + goto build_skb_failed; |
| 8251 | + } |
| 8252 | + DPA_WRITE_SKB_PTR(skb, skbh, new_buf, -1); |
| 8253 | + |
| 8254 | + addr = dma_map_single(dev, new_buf, |
| 8255 | + dpa_bp->size, DMA_BIDIRECTIONAL); |
| 8256 | + if (unlikely(dma_mapping_error(dev, addr))) |
| 8257 | + goto dma_map_failed; |
| 8258 | + |
| 8259 | + bm_buffer_set64(&bmb[i], addr); |
| 8260 | + } |
| 8261 | + |
| 8262 | +release_bufs: |
| 8263 | + /* Release the buffers. In case bman is busy, keep trying |
| 8264 | + * until successful. bman_release() is guaranteed to succeed |
| 8265 | + * in a reasonable amount of time |
| 8266 | + */ |
| 8267 | + while (unlikely(bman_release(dpa_bp->pool, bmb, i, 0))) |
| 8268 | + cpu_relax(); |
| 8269 | + return i; |
| 8270 | + |
| 8271 | +dma_map_failed: |
| 8272 | + kfree_skb(skb); |
| 8273 | + |
| 8274 | +build_skb_failed: |
| 8275 | +netdev_alloc_failed: |
| 8276 | + net_err_ratelimited("dpa_bp_add_8_bufs() failed\n"); |
| 8277 | + WARN_ONCE(1, "Memory allocation failure on Rx\n"); |
| 8278 | + |
| 8279 | + bm_buffer_set64(&bmb[i], 0); |
| 8280 | + /* Avoid releasing a completely null buffer; bman_release() requires |
| 8281 | + * at least one buffer. |
| 8282 | + */ |
| 8283 | + if (likely(i)) |
| 8284 | + goto release_bufs; |
| 8285 | + |
| 8286 | + return 0; |
| 8287 | +} |
| 8288 | + |
| 8289 | +/* Cold path wrapper over _dpa_bp_add_8_bufs(). */ |
| 8290 | +static void dpa_bp_add_8_bufs(const struct dpa_bp *dpa_bp, int cpu) |
| 8291 | +{ |
| 8292 | + int *count_ptr = per_cpu_ptr(dpa_bp->percpu_count, cpu); |
| 8293 | + *count_ptr += _dpa_bp_add_8_bufs(dpa_bp); |
| 8294 | +} |
| 8295 | + |
| 8296 | +int dpa_bp_priv_seed(struct dpa_bp *dpa_bp) |
| 8297 | +{ |
| 8298 | + int i; |
| 8299 | + |
| 8300 | + /* Give each CPU an allotment of "config_count" buffers */ |
| 8301 | + for_each_possible_cpu(i) { |
| 8302 | + int j; |
| 8303 | + |
| 8304 | + /* Although we access another CPU's counters here |
| 8305 | + * we do it at boot time so it is safe |
| 8306 | + */ |
| 8307 | + for (j = 0; j < dpa_bp->config_count; j += 8) |
| 8308 | + dpa_bp_add_8_bufs(dpa_bp, i); |
| 8309 | + } |
| 8310 | + return 0; |
| 8311 | +} |
| 8312 | +EXPORT_SYMBOL(dpa_bp_priv_seed); |
| 8313 | + |
| 8314 | +/* Add buffers/(pages) for Rx processing whenever bpool count falls below |
| 8315 | + * REFILL_THRESHOLD. |
| 8316 | + */ |
| 8317 | +int dpaa_eth_refill_bpools(struct dpa_bp *dpa_bp, int *countptr) |
| 8318 | +{ |
| 8319 | + int count = *countptr; |
| 8320 | + int new_bufs; |
| 8321 | + |
| 8322 | + if (unlikely(count < CONFIG_FSL_DPAA_ETH_REFILL_THRESHOLD)) { |
| 8323 | + do { |
| 8324 | + new_bufs = _dpa_bp_add_8_bufs(dpa_bp); |
| 8325 | + if (unlikely(!new_bufs)) { |
| 8326 | + /* Avoid looping forever if we've temporarily |
| 8327 | + * run out of memory. We'll try again at the |
| 8328 | + * next NAPI cycle. |
| 8329 | + */ |
| 8330 | + break; |
| 8331 | + } |
| 8332 | + count += new_bufs; |
| 8333 | + } while (count < CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT); |
| 8334 | + |
| 8335 | + *countptr = count; |
| 8336 | + if (unlikely(count < CONFIG_FSL_DPAA_ETH_MAX_BUF_COUNT)) |
| 8337 | + return -ENOMEM; |
| 8338 | + } |
| 8339 | + |
| 8340 | + return 0; |
| 8341 | +} |
| 8342 | +EXPORT_SYMBOL(dpaa_eth_refill_bpools); |
| 8343 | + |
| 8344 | +/* Cleanup function for outgoing frame descriptors that were built on Tx path, |
| 8345 | + * either contiguous frames or scatter/gather ones. |
| 8346 | + * Skb freeing is not handled here. |
| 8347 | + * |
| 8348 | + * This function may be called on error paths in the Tx function, so guard |
| 8349 | + * against cases when not all fd relevant fields were filled in. |
| 8350 | + * |
| 8351 | + * Return the skb backpointer, since for S/G frames the buffer containing it |
| 8352 | + * gets freed here. |
| 8353 | + */ |
| 8354 | +struct sk_buff *_dpa_cleanup_tx_fd(const struct dpa_priv_s *priv, |
| 8355 | + const struct qm_fd *fd) |
| 8356 | +{ |
| 8357 | + const struct qm_sg_entry *sgt; |
| 8358 | + int i; |
| 8359 | + struct dpa_bp *dpa_bp = priv->dpa_bp; |
| 8360 | + dma_addr_t addr = qm_fd_addr(fd); |
| 8361 | + dma_addr_t sg_addr; |
| 8362 | + struct sk_buff **skbh; |
| 8363 | + struct sk_buff *skb = NULL; |
| 8364 | + const enum dma_data_direction dma_dir = DMA_TO_DEVICE; |
| 8365 | + int nr_frags; |
| 8366 | + int sg_len; |
| 8367 | + |
| 8368 | + /* retrieve skb back pointer */ |
| 8369 | + DPA_READ_SKB_PTR(skb, skbh, phys_to_virt(addr), 0); |
| 8370 | + |
| 8371 | + if (unlikely(fd->format == qm_fd_sg)) { |
| 8372 | + nr_frags = skb_shinfo(skb)->nr_frags; |
| 8373 | + dma_unmap_single(dpa_bp->dev, addr, dpa_fd_offset(fd) + |
| 8374 | + sizeof(struct qm_sg_entry) * (1 + nr_frags), |
| 8375 | + dma_dir); |
| 8376 | + |
| 8377 | + /* The sgt buffer has been allocated with netdev_alloc_frag(), |
| 8378 | + * it's from lowmem. |
| 8379 | + */ |
| 8380 | + sgt = phys_to_virt(addr + dpa_fd_offset(fd)); |
| 8381 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 8382 | + if (priv->tsu && priv->tsu->valid && |
| 8383 | + priv->tsu->hwts_tx_en_ioctl) |
| 8384 | + dpa_ptp_store_txstamp(priv, skb, (void *)skbh); |
| 8385 | +#endif |
| 8386 | +#ifdef CONFIG_FSL_DPAA_TS |
| 8387 | + if (unlikely(priv->ts_tx_en && |
| 8388 | + skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
| 8389 | + struct skb_shared_hwtstamps shhwtstamps; |
| 8390 | + |
| 8391 | + dpa_get_ts(priv, TX, &shhwtstamps, (void *)skbh); |
| 8392 | + skb_tstamp_tx(skb, &shhwtstamps); |
| 8393 | + } |
| 8394 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 8395 | + |
| 8396 | + /* sgt[0] is from lowmem, was dma_map_single()-ed */ |
| 8397 | + sg_addr = qm_sg_addr(&sgt[0]); |
| 8398 | + sg_len = qm_sg_entry_get_len(&sgt[0]); |
| 8399 | + dma_unmap_single(dpa_bp->dev, sg_addr, sg_len, dma_dir); |
| 8400 | + |
| 8401 | + /* remaining pages were mapped with dma_map_page() */ |
| 8402 | + for (i = 1; i <= nr_frags; i++) { |
| 8403 | + DPA_BUG_ON(qm_sg_entry_get_ext(&sgt[i])); |
| 8404 | + sg_addr = qm_sg_addr(&sgt[i]); |
| 8405 | + sg_len = qm_sg_entry_get_len(&sgt[i]); |
| 8406 | + dma_unmap_page(dpa_bp->dev, sg_addr, sg_len, dma_dir); |
| 8407 | + } |
| 8408 | + |
| 8409 | + /* Free the page frag that we allocated on Tx */ |
| 8410 | + put_page(virt_to_head_page(sgt)); |
| 8411 | + } else { |
| 8412 | + dma_unmap_single(dpa_bp->dev, addr, |
| 8413 | + skb_tail_pointer(skb) - (u8 *)skbh, dma_dir); |
| 8414 | +#ifdef CONFIG_FSL_DPAA_TS |
| 8415 | + /* get the timestamp for non-SG frames */ |
| 8416 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 8417 | + if (priv->tsu && priv->tsu->valid && |
| 8418 | + priv->tsu->hwts_tx_en_ioctl) |
| 8419 | + dpa_ptp_store_txstamp(priv, skb, (void *)skbh); |
| 8420 | +#endif |
| 8421 | + if (unlikely(priv->ts_tx_en && |
| 8422 | + skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
| 8423 | + struct skb_shared_hwtstamps shhwtstamps; |
| 8424 | + |
| 8425 | + dpa_get_ts(priv, TX, &shhwtstamps, (void *)skbh); |
| 8426 | + skb_tstamp_tx(skb, &shhwtstamps); |
| 8427 | + } |
| 8428 | +#endif |
| 8429 | + } |
| 8430 | + |
| 8431 | + return skb; |
| 8432 | +} |
| 8433 | +EXPORT_SYMBOL(_dpa_cleanup_tx_fd); |
| 8434 | + |
| 8435 | +#ifndef CONFIG_FSL_DPAA_TS |
| 8436 | +bool dpa_skb_is_recyclable(struct sk_buff *skb) |
| 8437 | +{ |
| 8438 | + /* No recycling possible if skb buffer is kmalloc'ed */ |
| 8439 | + if (skb->head_frag == 0) |
| 8440 | + return false; |
| 8441 | + |
| 8442 | + /* or if it's an userspace buffer */ |
| 8443 | + if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) |
| 8444 | + return false; |
| 8445 | + |
| 8446 | + /* or if it's cloned or shared */ |
| 8447 | + if (skb_shared(skb) || skb_cloned(skb) || |
| 8448 | + skb->fclone != SKB_FCLONE_UNAVAILABLE) |
| 8449 | + return false; |
| 8450 | + |
| 8451 | + return true; |
| 8452 | +} |
| 8453 | +EXPORT_SYMBOL(dpa_skb_is_recyclable); |
| 8454 | + |
| 8455 | +bool dpa_buf_is_recyclable(struct sk_buff *skb, |
| 8456 | + uint32_t min_size, |
| 8457 | + uint16_t min_offset, |
| 8458 | + unsigned char **new_buf_start) |
| 8459 | +{ |
| 8460 | + unsigned char *new; |
| 8461 | + |
| 8462 | + /* In order to recycle a buffer, the following conditions must be met: |
| 8463 | + * - buffer size no less than the buffer pool size |
| 8464 | + * - buffer size no higher than an upper limit (to avoid moving too much |
| 8465 | + * system memory to the buffer pools) |
| 8466 | + * - buffer address aligned to cacheline bytes |
| 8467 | + * - offset of data from start of buffer no lower than a minimum value |
| 8468 | + * - offset of data from start of buffer no higher than a maximum value |
| 8469 | + */ |
| 8470 | + new = min(skb_end_pointer(skb) - min_size, skb->data - min_offset); |
| 8471 | + |
| 8472 | + /* left align to the nearest cacheline */ |
| 8473 | + new = (unsigned char *)((unsigned long)new & ~(SMP_CACHE_BYTES - 1)); |
| 8474 | + |
| 8475 | + if (likely(new >= skb->head && |
| 8476 | + new >= (skb->data - DPA_MAX_FD_OFFSET) && |
| 8477 | + skb_end_pointer(skb) - new <= DPA_RECYCLE_MAX_SIZE)) { |
| 8478 | + *new_buf_start = new; |
| 8479 | + return true; |
| 8480 | + } |
| 8481 | + |
| 8482 | + return false; |
| 8483 | +} |
| 8484 | +EXPORT_SYMBOL(dpa_buf_is_recyclable); |
| 8485 | +#endif |
| 8486 | + |
| 8487 | +/* Build a linear skb around the received buffer. |
| 8488 | + * We are guaranteed there is enough room at the end of the data buffer to |
| 8489 | + * accommodate the shared info area of the skb. |
| 8490 | + */ |
| 8491 | +static struct sk_buff *__hot contig_fd_to_skb(const struct dpa_priv_s *priv, |
| 8492 | + const struct qm_fd *fd, int *use_gro) |
| 8493 | +{ |
| 8494 | + dma_addr_t addr = qm_fd_addr(fd); |
| 8495 | + ssize_t fd_off = dpa_fd_offset(fd); |
| 8496 | + void *vaddr; |
| 8497 | + const fm_prs_result_t *parse_results; |
| 8498 | + struct sk_buff *skb = NULL, **skbh; |
| 8499 | + |
| 8500 | + vaddr = phys_to_virt(addr); |
| 8501 | + DPA_BUG_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES)); |
| 8502 | + |
| 8503 | + /* Retrieve the skb and adjust data and tail pointers, to make sure |
| 8504 | + * forwarded skbs will have enough space on Tx if extra headers |
| 8505 | + * are added. |
| 8506 | + */ |
| 8507 | + DPA_READ_SKB_PTR(skb, skbh, vaddr, -1); |
| 8508 | + |
| 8509 | +#ifdef CONFIG_FSL_DPAA_ETH_JUMBO_FRAME |
| 8510 | + /* When using jumbo Rx buffers, we risk having frames dropped due to |
| 8511 | + * the socket backlog reaching its maximum allowed size. |
| 8512 | + * Use the frame length for the skb truesize instead of the buffer |
| 8513 | + * size, as this is the size of the data that actually gets copied to |
| 8514 | + * userspace. |
| 8515 | + * The stack may increase the payload. In this case, it will want to |
| 8516 | + * warn us that the frame length is larger than the truesize. We |
| 8517 | + * bypass the warning. |
| 8518 | + */ |
| 8519 | +#ifndef CONFIG_PPC |
| 8520 | + /* We do not support Jumbo frames on LS1043 and thus we edit |
| 8521 | + * the skb truesize only when the 4k errata is not present. |
| 8522 | + */ |
| 8523 | + if (likely(!dpaa_errata_a010022)) |
| 8524 | +#endif |
| 8525 | + skb->truesize = SKB_TRUESIZE(dpa_fd_length(fd)); |
| 8526 | +#endif |
| 8527 | + |
| 8528 | + DPA_BUG_ON(fd_off != priv->rx_headroom); |
| 8529 | + skb_reserve(skb, fd_off); |
| 8530 | + skb_put(skb, dpa_fd_length(fd)); |
| 8531 | + |
| 8532 | + /* Peek at the parse results for csum validation */ |
| 8533 | + parse_results = (const fm_prs_result_t *)(vaddr + |
| 8534 | + DPA_RX_PRIV_DATA_SIZE); |
| 8535 | + _dpa_process_parse_results(parse_results, fd, skb, use_gro); |
| 8536 | + |
| 8537 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 8538 | + if (priv->tsu && priv->tsu->valid && priv->tsu->hwts_rx_en_ioctl) |
| 8539 | + dpa_ptp_store_rxstamp(priv, skb, vaddr); |
| 8540 | +#endif |
| 8541 | +#ifdef CONFIG_FSL_DPAA_TS |
| 8542 | + if (priv->ts_rx_en) |
| 8543 | + dpa_get_ts(priv, RX, skb_hwtstamps(skb), vaddr); |
| 8544 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 8545 | + |
| 8546 | + return skb; |
| 8547 | +} |
| 8548 | + |
| 8549 | + |
| 8550 | +/* Build an skb with the data of the first S/G entry in the linear portion and |
| 8551 | + * the rest of the frame as skb fragments. |
| 8552 | + * |
| 8553 | + * The page fragment holding the S/G Table is recycled here. |
| 8554 | + */ |
| 8555 | +static struct sk_buff *__hot sg_fd_to_skb(const struct dpa_priv_s *priv, |
| 8556 | + const struct qm_fd *fd, int *use_gro, |
| 8557 | + int *count_ptr) |
| 8558 | +{ |
| 8559 | + const struct qm_sg_entry *sgt; |
| 8560 | + dma_addr_t addr = qm_fd_addr(fd); |
| 8561 | + ssize_t fd_off = dpa_fd_offset(fd); |
| 8562 | + dma_addr_t sg_addr; |
| 8563 | + void *vaddr, *sg_vaddr; |
| 8564 | + struct dpa_bp *dpa_bp; |
| 8565 | + struct page *page, *head_page; |
| 8566 | + int frag_offset, frag_len; |
| 8567 | + int page_offset; |
| 8568 | + int i; |
| 8569 | + const fm_prs_result_t *parse_results; |
| 8570 | + struct sk_buff *skb = NULL, *skb_tmp, **skbh; |
| 8571 | + |
| 8572 | + vaddr = phys_to_virt(addr); |
| 8573 | + DPA_BUG_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES)); |
| 8574 | + |
| 8575 | + dpa_bp = priv->dpa_bp; |
| 8576 | + /* Iterate through the SGT entries and add data buffers to the skb */ |
| 8577 | + sgt = vaddr + fd_off; |
| 8578 | + for (i = 0; i < DPA_SGT_MAX_ENTRIES; i++) { |
| 8579 | + /* Extension bit is not supported */ |
| 8580 | + DPA_BUG_ON(qm_sg_entry_get_ext(&sgt[i])); |
| 8581 | + |
| 8582 | + /* We use a single global Rx pool */ |
| 8583 | + DPA_BUG_ON(dpa_bp != |
| 8584 | + dpa_bpid2pool(qm_sg_entry_get_bpid(&sgt[i]))); |
| 8585 | + |
| 8586 | + sg_addr = qm_sg_addr(&sgt[i]); |
| 8587 | + sg_vaddr = phys_to_virt(sg_addr); |
| 8588 | + DPA_BUG_ON(!IS_ALIGNED((unsigned long)sg_vaddr, |
| 8589 | + SMP_CACHE_BYTES)); |
| 8590 | + |
| 8591 | + dma_unmap_single(dpa_bp->dev, sg_addr, dpa_bp->size, |
| 8592 | + DMA_BIDIRECTIONAL); |
| 8593 | + if (i == 0) { |
| 8594 | + DPA_READ_SKB_PTR(skb, skbh, sg_vaddr, -1); |
| 8595 | + DPA_BUG_ON(skb->head != sg_vaddr); |
| 8596 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 8597 | + if (priv->tsu && priv->tsu->valid && |
| 8598 | + priv->tsu->hwts_rx_en_ioctl) |
| 8599 | + dpa_ptp_store_rxstamp(priv, skb, vaddr); |
| 8600 | +#endif |
| 8601 | +#ifdef CONFIG_FSL_DPAA_TS |
| 8602 | + if (priv->ts_rx_en) |
| 8603 | + dpa_get_ts(priv, RX, skb_hwtstamps(skb), vaddr); |
| 8604 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 8605 | + |
| 8606 | + /* In the case of a SG frame, FMan stores the Internal |
| 8607 | + * Context in the buffer containing the sgt. |
| 8608 | + * Inspect the parse results before anything else. |
| 8609 | + */ |
| 8610 | + parse_results = (const fm_prs_result_t *)(vaddr + |
| 8611 | + DPA_RX_PRIV_DATA_SIZE); |
| 8612 | + _dpa_process_parse_results(parse_results, fd, skb, |
| 8613 | + use_gro); |
| 8614 | + |
| 8615 | + /* Make sure forwarded skbs will have enough space |
| 8616 | + * on Tx, if extra headers are added. |
| 8617 | + */ |
| 8618 | + DPA_BUG_ON(fd_off != priv->rx_headroom); |
| 8619 | + skb_reserve(skb, fd_off); |
| 8620 | + skb_put(skb, qm_sg_entry_get_len(&sgt[i])); |
| 8621 | + } else { |
| 8622 | + /* Not the first S/G entry; all data from buffer will |
| 8623 | + * be added in an skb fragment; fragment index is offset |
| 8624 | + * by one since first S/G entry was incorporated in the |
| 8625 | + * linear part of the skb. |
| 8626 | + * |
| 8627 | + * Caution: 'page' may be a tail page. |
| 8628 | + */ |
| 8629 | + DPA_READ_SKB_PTR(skb_tmp, skbh, sg_vaddr, -1); |
| 8630 | + page = virt_to_page(sg_vaddr); |
| 8631 | + head_page = virt_to_head_page(sg_vaddr); |
| 8632 | + |
| 8633 | + /* Free (only) the skbuff shell because its data buffer |
| 8634 | + * is already a frag in the main skb. |
| 8635 | + */ |
| 8636 | + get_page(head_page); |
| 8637 | + dev_kfree_skb(skb_tmp); |
| 8638 | + |
| 8639 | + /* Compute offset in (possibly tail) page */ |
| 8640 | + page_offset = ((unsigned long)sg_vaddr & |
| 8641 | + (PAGE_SIZE - 1)) + |
| 8642 | + (page_address(page) - page_address(head_page)); |
| 8643 | + /* page_offset only refers to the beginning of sgt[i]; |
| 8644 | + * but the buffer itself may have an internal offset. |
| 8645 | + */ |
| 8646 | + frag_offset = qm_sg_entry_get_offset(&sgt[i]) + |
| 8647 | + page_offset; |
| 8648 | + frag_len = qm_sg_entry_get_len(&sgt[i]); |
| 8649 | + /* skb_add_rx_frag() does no checking on the page; if |
| 8650 | + * we pass it a tail page, we'll end up with |
| 8651 | + * bad page accounting and eventually with segafults. |
| 8652 | + */ |
| 8653 | + skb_add_rx_frag(skb, i - 1, head_page, frag_offset, |
| 8654 | + frag_len, dpa_bp->size); |
| 8655 | + } |
| 8656 | + /* Update the pool count for the current {cpu x bpool} */ |
| 8657 | + (*count_ptr)--; |
| 8658 | + |
| 8659 | + if (qm_sg_entry_get_final(&sgt[i])) |
| 8660 | + break; |
| 8661 | + } |
| 8662 | + WARN_ONCE(i == DPA_SGT_MAX_ENTRIES, "No final bit on SGT\n"); |
| 8663 | + |
| 8664 | + /* recycle the SGT fragment */ |
| 8665 | + DPA_BUG_ON(dpa_bp != dpa_bpid2pool(fd->bpid)); |
| 8666 | + dpa_bp_recycle_frag(dpa_bp, (unsigned long)vaddr, count_ptr); |
| 8667 | + return skb; |
| 8668 | +} |
| 8669 | + |
| 8670 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 8671 | +static inline int dpa_skb_loop(const struct dpa_priv_s *priv, |
| 8672 | + struct sk_buff *skb) |
| 8673 | +{ |
| 8674 | + if (unlikely(priv->loop_to < 0)) |
| 8675 | + return 0; /* loop disabled by default */ |
| 8676 | + |
| 8677 | + skb_push(skb, ETH_HLEN); /* compensate for eth_type_trans */ |
| 8678 | + dpa_tx(skb, dpa_loop_netdevs[priv->loop_to]); |
| 8679 | + |
| 8680 | + return 1; /* Frame Tx on the selected interface */ |
| 8681 | +} |
| 8682 | +#endif |
| 8683 | + |
| 8684 | +void __hot _dpa_rx(struct net_device *net_dev, |
| 8685 | + struct qman_portal *portal, |
| 8686 | + const struct dpa_priv_s *priv, |
| 8687 | + struct dpa_percpu_priv_s *percpu_priv, |
| 8688 | + const struct qm_fd *fd, |
| 8689 | + u32 fqid, |
| 8690 | + int *count_ptr) |
| 8691 | +{ |
| 8692 | + struct dpa_bp *dpa_bp; |
| 8693 | + struct sk_buff *skb; |
| 8694 | + dma_addr_t addr = qm_fd_addr(fd); |
| 8695 | + u32 fd_status = fd->status; |
| 8696 | + unsigned int skb_len; |
| 8697 | + struct rtnl_link_stats64 *percpu_stats = &percpu_priv->stats; |
| 8698 | + int use_gro = net_dev->features & NETIF_F_GRO; |
| 8699 | + |
| 8700 | + if (unlikely(fd_status & FM_FD_STAT_RX_ERRORS) != 0) { |
| 8701 | + if (netif_msg_hw(priv) && net_ratelimit()) |
| 8702 | + netdev_warn(net_dev, "FD status = 0x%08x\n", |
| 8703 | + fd_status & FM_FD_STAT_RX_ERRORS); |
| 8704 | + |
| 8705 | + percpu_stats->rx_errors++; |
| 8706 | + goto _release_frame; |
| 8707 | + } |
| 8708 | + |
| 8709 | + dpa_bp = priv->dpa_bp; |
| 8710 | + DPA_BUG_ON(dpa_bp != dpa_bpid2pool(fd->bpid)); |
| 8711 | + |
| 8712 | + /* prefetch the first 64 bytes of the frame or the SGT start */ |
| 8713 | + dma_unmap_single(dpa_bp->dev, addr, dpa_bp->size, DMA_BIDIRECTIONAL); |
| 8714 | + prefetch(phys_to_virt(addr) + dpa_fd_offset(fd)); |
| 8715 | + |
| 8716 | + /* The only FD types that we may receive are contig and S/G */ |
| 8717 | + DPA_BUG_ON((fd->format != qm_fd_contig) && (fd->format != qm_fd_sg)); |
| 8718 | + |
| 8719 | + if (likely(fd->format == qm_fd_contig)) { |
| 8720 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 8721 | + /* Execute the Rx processing hook, if it exists. */ |
| 8722 | + if (dpaa_eth_hooks.rx_default && |
| 8723 | + dpaa_eth_hooks.rx_default((void *)fd, net_dev, |
| 8724 | + fqid) == DPAA_ETH_STOLEN) { |
| 8725 | + /* won't count the rx bytes in */ |
| 8726 | + return; |
| 8727 | + } |
| 8728 | +#endif |
| 8729 | + skb = contig_fd_to_skb(priv, fd, &use_gro); |
| 8730 | + } else { |
| 8731 | + skb = sg_fd_to_skb(priv, fd, &use_gro, count_ptr); |
| 8732 | + percpu_priv->rx_sg++; |
| 8733 | + } |
| 8734 | + |
| 8735 | + /* Account for either the contig buffer or the SGT buffer (depending on |
| 8736 | + * which case we were in) having been removed from the pool. |
| 8737 | + */ |
| 8738 | + (*count_ptr)--; |
| 8739 | + skb->protocol = eth_type_trans(skb, net_dev); |
| 8740 | + |
| 8741 | + /* IP Reassembled frames are allowed to be larger than MTU */ |
| 8742 | + if (unlikely(dpa_check_rx_mtu(skb, net_dev->mtu) && |
| 8743 | + !(fd_status & FM_FD_IPR))) { |
| 8744 | + percpu_stats->rx_dropped++; |
| 8745 | + goto drop_bad_frame; |
| 8746 | + } |
| 8747 | + |
| 8748 | + skb_len = skb->len; |
| 8749 | + |
| 8750 | +#ifdef CONFIG_FSL_DPAA_DBG_LOOP |
| 8751 | + if (dpa_skb_loop(priv, skb)) { |
| 8752 | + percpu_stats->rx_packets++; |
| 8753 | + percpu_stats->rx_bytes += skb_len; |
| 8754 | + return; |
| 8755 | + } |
| 8756 | +#endif |
| 8757 | + |
| 8758 | + if (use_gro) { |
| 8759 | + gro_result_t gro_result; |
| 8760 | + const struct qman_portal_config *pc = |
| 8761 | + qman_p_get_portal_config(portal); |
| 8762 | + struct dpa_napi_portal *np = &percpu_priv->np[pc->index]; |
| 8763 | + |
| 8764 | + np->p = portal; |
| 8765 | + gro_result = napi_gro_receive(&np->napi, skb); |
| 8766 | + /* If frame is dropped by the stack, rx_dropped counter is |
| 8767 | + * incremented automatically, so no need for us to update it |
| 8768 | + */ |
| 8769 | + if (unlikely(gro_result == GRO_DROP)) |
| 8770 | + goto packet_dropped; |
| 8771 | + } else if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) |
| 8772 | + goto packet_dropped; |
| 8773 | + |
| 8774 | + percpu_stats->rx_packets++; |
| 8775 | + percpu_stats->rx_bytes += skb_len; |
| 8776 | + |
| 8777 | +packet_dropped: |
| 8778 | + return; |
| 8779 | + |
| 8780 | +drop_bad_frame: |
| 8781 | + dev_kfree_skb(skb); |
| 8782 | + return; |
| 8783 | + |
| 8784 | +_release_frame: |
| 8785 | + dpa_fd_release(net_dev, fd); |
| 8786 | +} |
| 8787 | + |
| 8788 | +int __hot skb_to_contig_fd(struct dpa_priv_s *priv, |
| 8789 | + struct sk_buff *skb, struct qm_fd *fd, |
| 8790 | + int *count_ptr, int *offset) |
| 8791 | +{ |
| 8792 | + struct sk_buff **skbh; |
| 8793 | + dma_addr_t addr; |
| 8794 | + struct dpa_bp *dpa_bp = priv->dpa_bp; |
| 8795 | + struct net_device *net_dev = priv->net_dev; |
| 8796 | + int err; |
| 8797 | + enum dma_data_direction dma_dir; |
| 8798 | + unsigned char *buffer_start; |
| 8799 | + int dma_map_size; |
| 8800 | + |
| 8801 | +#ifndef CONFIG_FSL_DPAA_TS |
| 8802 | + /* Check recycling conditions; only if timestamp support is not |
| 8803 | + * enabled, otherwise we need the fd back on tx confirmation |
| 8804 | + */ |
| 8805 | + |
| 8806 | + /* We can recycle the buffer if: |
| 8807 | + * - the pool is not full |
| 8808 | + * - the buffer meets the skb recycling conditions |
| 8809 | + * - the buffer meets our own (size, offset, align) conditions |
| 8810 | + */ |
| 8811 | + if (likely((*count_ptr < dpa_bp->target_count) && |
| 8812 | + dpa_skb_is_recyclable(skb) && |
| 8813 | + dpa_buf_is_recyclable(skb, dpa_bp->size, |
| 8814 | + priv->tx_headroom, &buffer_start))) { |
| 8815 | + /* Buffer is recyclable; use the new start address |
| 8816 | + * and set fd parameters and DMA mapping direction |
| 8817 | + */ |
| 8818 | + fd->bpid = dpa_bp->bpid; |
| 8819 | + DPA_BUG_ON(skb->data - buffer_start > DPA_MAX_FD_OFFSET); |
| 8820 | + fd->offset = (uint16_t)(skb->data - buffer_start); |
| 8821 | + dma_dir = DMA_BIDIRECTIONAL; |
| 8822 | + dma_map_size = dpa_bp->size; |
| 8823 | + |
| 8824 | + DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, -1); |
| 8825 | + *offset = skb_headroom(skb) - fd->offset; |
| 8826 | + } else |
| 8827 | +#endif |
| 8828 | + { |
| 8829 | + /* Not recyclable. |
| 8830 | + * We are guaranteed to have at least tx_headroom bytes |
| 8831 | + * available, so just use that for offset. |
| 8832 | + */ |
| 8833 | + fd->bpid = 0xff; |
| 8834 | + buffer_start = skb->data - priv->tx_headroom; |
| 8835 | + fd->offset = priv->tx_headroom; |
| 8836 | + dma_dir = DMA_TO_DEVICE; |
| 8837 | + dma_map_size = skb_tail_pointer(skb) - buffer_start; |
| 8838 | + |
| 8839 | + /* The buffer will be Tx-confirmed, but the TxConf cb must |
| 8840 | + * necessarily look at our Tx private data to retrieve the |
| 8841 | + * skbuff. (In short: can't use DPA_WRITE_SKB_PTR() here.) |
| 8842 | + */ |
| 8843 | + DPA_WRITE_SKB_PTR(skb, skbh, buffer_start, 0); |
| 8844 | + } |
| 8845 | + |
| 8846 | + /* Enable L3/L4 hardware checksum computation. |
| 8847 | + * |
| 8848 | + * We must do this before dma_map_single(DMA_TO_DEVICE), because we may |
| 8849 | + * need to write into the skb. |
| 8850 | + */ |
| 8851 | + err = dpa_enable_tx_csum(priv, skb, fd, |
| 8852 | + ((char *)skbh) + DPA_TX_PRIV_DATA_SIZE); |
| 8853 | + if (unlikely(err < 0)) { |
| 8854 | + if (netif_msg_tx_err(priv) && net_ratelimit()) |
| 8855 | + netdev_err(net_dev, "HW csum error: %d\n", err); |
| 8856 | + return err; |
| 8857 | + } |
| 8858 | + |
| 8859 | + /* Fill in the rest of the FD fields */ |
| 8860 | + fd->format = qm_fd_contig; |
| 8861 | + fd->length20 = skb->len; |
| 8862 | + fd->cmd |= FM_FD_CMD_FCO; |
| 8863 | + |
| 8864 | + /* Map the entire buffer size that may be seen by FMan, but no more */ |
| 8865 | + addr = dma_map_single(dpa_bp->dev, skbh, dma_map_size, dma_dir); |
| 8866 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 8867 | + if (netif_msg_tx_err(priv) && net_ratelimit()) |
| 8868 | + netdev_err(net_dev, "dma_map_single() failed\n"); |
| 8869 | + return -EINVAL; |
| 8870 | + } |
| 8871 | + qm_fd_addr_set64(fd, addr); |
| 8872 | + |
| 8873 | + return 0; |
| 8874 | +} |
| 8875 | +EXPORT_SYMBOL(skb_to_contig_fd); |
| 8876 | + |
| 8877 | +#ifndef CONFIG_PPC |
| 8878 | +struct sk_buff *split_skb_at_4k_boundaries(struct sk_buff *skb) |
| 8879 | +{ |
| 8880 | + unsigned int length, nr_frags, moved_len = 0; |
| 8881 | + u64 page_start; |
| 8882 | + struct page *page; |
| 8883 | + skb_frag_t *frag; |
| 8884 | + int i = 0, j = 0; |
| 8885 | + |
| 8886 | + /* make sure skb is not shared */ |
| 8887 | + skb = skb_share_check(skb, GFP_ATOMIC); |
| 8888 | + if (!skb) |
| 8889 | + return NULL; |
| 8890 | + |
| 8891 | + nr_frags = skb_shinfo(skb)->nr_frags; |
| 8892 | + page_start = (u64)skb->data; |
| 8893 | + |
| 8894 | + /* split the linear part at the first 4k boundary and create one (big) |
| 8895 | + * fragment with the rest |
| 8896 | + */ |
| 8897 | + if (HAS_DMA_ISSUE(skb->data, skb_headlen(skb))) { |
| 8898 | + /* we'll add one more frag, make sure there's room */ |
| 8899 | + if (nr_frags + 1 > DPA_SGT_MAX_ENTRIES) |
| 8900 | + return NULL; |
| 8901 | + |
| 8902 | + /* next page boundary */ |
| 8903 | + page_start = (page_start + 0x1000) & ~0xFFF; |
| 8904 | + page = virt_to_page(page_start); |
| 8905 | + |
| 8906 | + /* move the rest of fragments to make room for a new one at j */ |
| 8907 | + for (i = nr_frags - 1; i >= j; i--) |
| 8908 | + skb_shinfo(skb)->frags[i + 1] = skb_shinfo(skb)->frags[i]; |
| 8909 | + |
| 8910 | + /* move length bytes to a paged fragment at j */ |
| 8911 | + length = min((u64)0x1000, |
| 8912 | + (u64)skb->data + skb_headlen(skb) - page_start); |
| 8913 | + skb->data_len += length; |
| 8914 | + moved_len += length; |
| 8915 | + skb_fill_page_desc(skb, j++, page, 0, length); |
| 8916 | + get_page(page); |
| 8917 | + skb_shinfo(skb)->nr_frags = ++nr_frags; |
| 8918 | + } |
| 8919 | + /* adjust the tail pointer */ |
| 8920 | + skb->tail -= moved_len; |
| 8921 | + j = 0; |
| 8922 | + |
| 8923 | + /* split any paged fragment that crosses a 4K boundary */ |
| 8924 | + while (j < nr_frags) { |
| 8925 | + frag = &skb_shinfo(skb)->frags[j]; |
| 8926 | + |
| 8927 | + /* if there is a 4K boundary between the fragment's offset and end */ |
| 8928 | + if (HAS_DMA_ISSUE(frag->page_offset, frag->size)) { |
| 8929 | + /* we'll add one more frag, make sure there's room */ |
| 8930 | + if (nr_frags + 1 > DPA_SGT_MAX_ENTRIES) |
| 8931 | + return NULL; |
| 8932 | + |
| 8933 | + /* new page boundary */ |
| 8934 | + page_start = (u64)page_address(skb_frag_page(frag)) + |
| 8935 | + frag->page_offset + 0x1000; |
| 8936 | + page_start = (u64)page_start & ~0xFFF; |
| 8937 | + page = virt_to_page(page_start); |
| 8938 | + |
| 8939 | + /* move the rest of fragments to make room for a new one at j+1 */ |
| 8940 | + for (i = nr_frags - 1; i > j; i--) |
| 8941 | + skb_shinfo(skb)->frags[i + 1] = |
| 8942 | + skb_shinfo(skb)->frags[i]; |
| 8943 | + |
| 8944 | + /* move length bytes to a new paged fragment at j+1 */ |
| 8945 | + length = (u64)page_address(skb_frag_page(frag)) + |
| 8946 | + frag->page_offset + frag->size - page_start; |
| 8947 | + frag->size -= length; |
| 8948 | + skb_fill_page_desc(skb, j + 1, page, 0, length); |
| 8949 | + get_page(page); |
| 8950 | + skb_shinfo(skb)->nr_frags = ++nr_frags; |
| 8951 | + } |
| 8952 | + |
| 8953 | + /* move to next frag */ |
| 8954 | + j++; |
| 8955 | + } |
| 8956 | + |
| 8957 | + return skb; |
| 8958 | +} |
| 8959 | +#endif |
| 8960 | + |
| 8961 | +int __hot skb_to_sg_fd(struct dpa_priv_s *priv, |
| 8962 | + struct sk_buff *skb, struct qm_fd *fd) |
| 8963 | +{ |
| 8964 | + struct dpa_bp *dpa_bp = priv->dpa_bp; |
| 8965 | + dma_addr_t addr; |
| 8966 | + dma_addr_t sg_addr; |
| 8967 | + struct sk_buff **skbh; |
| 8968 | + struct net_device *net_dev = priv->net_dev; |
| 8969 | + int sg_len, sgt_size; |
| 8970 | + int err; |
| 8971 | + |
| 8972 | + struct qm_sg_entry *sgt; |
| 8973 | + void *sgt_buf; |
| 8974 | + skb_frag_t *frag; |
| 8975 | + int i = 0, j = 0; |
| 8976 | + int nr_frags; |
| 8977 | + const enum dma_data_direction dma_dir = DMA_TO_DEVICE; |
| 8978 | + |
| 8979 | + nr_frags = skb_shinfo(skb)->nr_frags; |
| 8980 | + fd->format = qm_fd_sg; |
| 8981 | + |
| 8982 | + sgt_size = sizeof(struct qm_sg_entry) * (1 + nr_frags); |
| 8983 | + |
| 8984 | + /* Get a page frag to store the SGTable, or a full page if the errata |
| 8985 | + * is in place and we need to avoid crossing a 4k boundary. |
| 8986 | + */ |
| 8987 | +#ifndef CONFIG_PPC |
| 8988 | + if (unlikely(dpaa_errata_a010022)) |
| 8989 | + sgt_buf = page_address(alloc_page(GFP_ATOMIC)); |
| 8990 | + else |
| 8991 | +#endif |
| 8992 | + sgt_buf = netdev_alloc_frag(priv->tx_headroom + sgt_size); |
| 8993 | + if (unlikely(!sgt_buf)) { |
| 8994 | + dev_err(dpa_bp->dev, "netdev_alloc_frag() failed\n"); |
| 8995 | + return -ENOMEM; |
| 8996 | + } |
| 8997 | + |
| 8998 | + /* it seems that the memory allocator does not zero the allocated mem */ |
| 8999 | + memset(sgt_buf, 0, priv->tx_headroom + sgt_size); |
| 9000 | + |
| 9001 | + /* Enable L3/L4 hardware checksum computation. |
| 9002 | + * |
| 9003 | + * We must do this before dma_map_single(DMA_TO_DEVICE), because we may |
| 9004 | + * need to write into the skb. |
| 9005 | + */ |
| 9006 | + err = dpa_enable_tx_csum(priv, skb, fd, |
| 9007 | + sgt_buf + DPA_TX_PRIV_DATA_SIZE); |
| 9008 | + if (unlikely(err < 0)) { |
| 9009 | + if (netif_msg_tx_err(priv) && net_ratelimit()) |
| 9010 | + netdev_err(net_dev, "HW csum error: %d\n", err); |
| 9011 | + goto csum_failed; |
| 9012 | + } |
| 9013 | + |
| 9014 | + /* Assign the data from skb->data to the first SG list entry */ |
| 9015 | + sgt = (struct qm_sg_entry *)(sgt_buf + priv->tx_headroom); |
| 9016 | + sg_len = skb_headlen(skb); |
| 9017 | + qm_sg_entry_set_bpid(&sgt[0], 0xff); |
| 9018 | + qm_sg_entry_set_offset(&sgt[0], 0); |
| 9019 | + qm_sg_entry_set_len(&sgt[0], sg_len); |
| 9020 | + qm_sg_entry_set_ext(&sgt[0], 0); |
| 9021 | + qm_sg_entry_set_final(&sgt[0], 0); |
| 9022 | + |
| 9023 | + addr = dma_map_single(dpa_bp->dev, skb->data, sg_len, dma_dir); |
| 9024 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 9025 | + dev_err(dpa_bp->dev, "DMA mapping failed"); |
| 9026 | + err = -EINVAL; |
| 9027 | + goto sg0_map_failed; |
| 9028 | + } |
| 9029 | + |
| 9030 | + qm_sg_entry_set64(&sgt[0], addr); |
| 9031 | + |
| 9032 | + /* populate the rest of SGT entries */ |
| 9033 | + for (i = 1; i <= nr_frags; i++) { |
| 9034 | + frag = &skb_shinfo(skb)->frags[i - 1]; |
| 9035 | + qm_sg_entry_set_bpid(&sgt[i], 0xff); |
| 9036 | + qm_sg_entry_set_offset(&sgt[i], 0); |
| 9037 | + qm_sg_entry_set_len(&sgt[i], frag->size); |
| 9038 | + qm_sg_entry_set_ext(&sgt[i], 0); |
| 9039 | + |
| 9040 | + if (i == nr_frags) |
| 9041 | + qm_sg_entry_set_final(&sgt[i], 1); |
| 9042 | + else |
| 9043 | + qm_sg_entry_set_final(&sgt[i], 0); |
| 9044 | + |
| 9045 | + DPA_BUG_ON(!skb_frag_page(frag)); |
| 9046 | + addr = skb_frag_dma_map(dpa_bp->dev, frag, 0, frag->size, |
| 9047 | + dma_dir); |
| 9048 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 9049 | + dev_err(dpa_bp->dev, "DMA mapping failed"); |
| 9050 | + err = -EINVAL; |
| 9051 | + goto sg_map_failed; |
| 9052 | + } |
| 9053 | + |
| 9054 | + /* keep the offset in the address */ |
| 9055 | + qm_sg_entry_set64(&sgt[i], addr); |
| 9056 | + } |
| 9057 | + |
| 9058 | + fd->length20 = skb->len; |
| 9059 | + fd->offset = priv->tx_headroom; |
| 9060 | + |
| 9061 | + /* DMA map the SGT page */ |
| 9062 | + DPA_WRITE_SKB_PTR(skb, skbh, sgt_buf, 0); |
| 9063 | + addr = dma_map_single(dpa_bp->dev, sgt_buf, |
| 9064 | + priv->tx_headroom + sgt_size, |
| 9065 | + dma_dir); |
| 9066 | + |
| 9067 | + if (unlikely(dma_mapping_error(dpa_bp->dev, addr))) { |
| 9068 | + dev_err(dpa_bp->dev, "DMA mapping failed"); |
| 9069 | + err = -EINVAL; |
| 9070 | + goto sgt_map_failed; |
| 9071 | + } |
| 9072 | + |
| 9073 | + qm_fd_addr_set64(fd, addr); |
| 9074 | + fd->bpid = 0xff; |
| 9075 | + fd->cmd |= FM_FD_CMD_FCO; |
| 9076 | + |
| 9077 | + return 0; |
| 9078 | + |
| 9079 | +sgt_map_failed: |
| 9080 | +sg_map_failed: |
| 9081 | + for (j = 0; j < i; j++) { |
| 9082 | + sg_addr = qm_sg_addr(&sgt[j]); |
| 9083 | + dma_unmap_page(dpa_bp->dev, sg_addr, |
| 9084 | + qm_sg_entry_get_len(&sgt[j]), dma_dir); |
| 9085 | + } |
| 9086 | +sg0_map_failed: |
| 9087 | +csum_failed: |
| 9088 | + put_page(virt_to_head_page(sgt_buf)); |
| 9089 | + |
| 9090 | + return err; |
| 9091 | +} |
| 9092 | +EXPORT_SYMBOL(skb_to_sg_fd); |
| 9093 | + |
| 9094 | +int __hot dpa_tx(struct sk_buff *skb, struct net_device *net_dev) |
| 9095 | +{ |
| 9096 | + struct dpa_priv_s *priv; |
| 9097 | + const int queue_mapping = dpa_get_queue_mapping(skb); |
| 9098 | + struct qman_fq *egress_fq, *conf_fq; |
| 9099 | + |
| 9100 | +#ifdef CONFIG_FSL_DPAA_HOOKS |
| 9101 | + /* If there is a Tx hook, run it. */ |
| 9102 | + if (dpaa_eth_hooks.tx && |
| 9103 | + dpaa_eth_hooks.tx(skb, net_dev) == DPAA_ETH_STOLEN) |
| 9104 | + /* won't update any Tx stats */ |
| 9105 | + return NETDEV_TX_OK; |
| 9106 | +#endif |
| 9107 | + |
| 9108 | + priv = netdev_priv(net_dev); |
| 9109 | + |
| 9110 | +#ifdef CONFIG_FSL_DPAA_CEETM |
| 9111 | + if (priv->ceetm_en) |
| 9112 | + return ceetm_tx(skb, net_dev); |
| 9113 | +#endif |
| 9114 | + |
| 9115 | + egress_fq = priv->egress_fqs[queue_mapping]; |
| 9116 | + conf_fq = priv->conf_fqs[queue_mapping]; |
| 9117 | + |
| 9118 | + return dpa_tx_extended(skb, net_dev, egress_fq, conf_fq); |
| 9119 | +} |
| 9120 | + |
| 9121 | +int __hot dpa_tx_extended(struct sk_buff *skb, struct net_device *net_dev, |
| 9122 | + struct qman_fq *egress_fq, struct qman_fq *conf_fq) |
| 9123 | +{ |
| 9124 | + struct dpa_priv_s *priv; |
| 9125 | + struct qm_fd fd; |
| 9126 | + struct dpa_percpu_priv_s *percpu_priv; |
| 9127 | + struct rtnl_link_stats64 *percpu_stats; |
| 9128 | + int err = 0; |
| 9129 | + const bool nonlinear = skb_is_nonlinear(skb); |
| 9130 | + int *countptr, offset = 0; |
| 9131 | + |
| 9132 | + priv = netdev_priv(net_dev); |
| 9133 | + /* Non-migratable context, safe to use raw_cpu_ptr */ |
| 9134 | + percpu_priv = raw_cpu_ptr(priv->percpu_priv); |
| 9135 | + percpu_stats = &percpu_priv->stats; |
| 9136 | + countptr = raw_cpu_ptr(priv->dpa_bp->percpu_count); |
| 9137 | + |
| 9138 | + clear_fd(&fd); |
| 9139 | + |
| 9140 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 9141 | + if (priv->tsu && priv->tsu->valid && priv->tsu->hwts_tx_en_ioctl) |
| 9142 | + fd.cmd |= FM_FD_CMD_UPD; |
| 9143 | +#endif |
| 9144 | +#ifdef CONFIG_FSL_DPAA_TS |
| 9145 | + if (unlikely(priv->ts_tx_en && |
| 9146 | + skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) |
| 9147 | + fd.cmd |= FM_FD_CMD_UPD; |
| 9148 | + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
| 9149 | +#endif /* CONFIG_FSL_DPAA_TS */ |
| 9150 | + |
| 9151 | +#ifndef CONFIG_PPC |
| 9152 | + if (unlikely(dpaa_errata_a010022)) { |
| 9153 | + skb = split_skb_at_4k_boundaries(skb); |
| 9154 | + if (!skb) |
| 9155 | + goto skb_to_fd_failed; |
| 9156 | + } |
| 9157 | +#endif |
| 9158 | + |
| 9159 | + /* MAX_SKB_FRAGS is larger than our DPA_SGT_MAX_ENTRIES; make sure |
| 9160 | + * we don't feed FMan with more fragments than it supports. |
| 9161 | + * Btw, we're using the first sgt entry to store the linear part of |
| 9162 | + * the skb, so we're one extra frag short. |
| 9163 | + */ |
| 9164 | + if (nonlinear && |
| 9165 | + likely(skb_shinfo(skb)->nr_frags < DPA_SGT_MAX_ENTRIES)) { |
| 9166 | + /* Just create a S/G fd based on the skb */ |
| 9167 | + err = skb_to_sg_fd(priv, skb, &fd); |
| 9168 | + percpu_priv->tx_frag_skbuffs++; |
| 9169 | + } else { |
| 9170 | + /* Make sure we have enough headroom to accommodate private |
| 9171 | + * data, parse results, etc. Normally this shouldn't happen if |
| 9172 | + * we're here via the standard kernel stack. |
| 9173 | + */ |
| 9174 | + if (unlikely(skb_headroom(skb) < priv->tx_headroom)) { |
| 9175 | + struct sk_buff *skb_new; |
| 9176 | + |
| 9177 | + skb_new = skb_realloc_headroom(skb, priv->tx_headroom); |
| 9178 | + if (unlikely(!skb_new)) { |
| 9179 | + dev_kfree_skb(skb); |
| 9180 | + percpu_stats->tx_errors++; |
| 9181 | + return NETDEV_TX_OK; |
| 9182 | + } |
| 9183 | + dev_kfree_skb(skb); |
| 9184 | + skb = skb_new; |
| 9185 | + } |
| 9186 | + |
| 9187 | + /* We're going to store the skb backpointer at the beginning |
| 9188 | + * of the data buffer, so we need a privately owned skb |
| 9189 | + */ |
| 9190 | + |
| 9191 | + /* Code borrowed from skb_unshare(). */ |
| 9192 | + if (skb_cloned(skb)) { |
| 9193 | + struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC); |
| 9194 | + kfree_skb(skb); |
| 9195 | + skb = nskb; |
| 9196 | + /* skb_copy() has now linearized the skbuff. */ |
| 9197 | + } else if (unlikely(nonlinear)) { |
| 9198 | + /* We are here because the egress skb contains |
| 9199 | + * more fragments than we support. In this case, |
| 9200 | + * we have no choice but to linearize it ourselves. |
| 9201 | + */ |
| 9202 | + err = __skb_linearize(skb); |
| 9203 | + } |
| 9204 | + if (unlikely(!skb || err < 0)) |
| 9205 | + /* Common out-of-memory error path */ |
| 9206 | + goto enomem; |
| 9207 | + |
| 9208 | + err = skb_to_contig_fd(priv, skb, &fd, countptr, &offset); |
| 9209 | + } |
| 9210 | + if (unlikely(err < 0)) |
| 9211 | + goto skb_to_fd_failed; |
| 9212 | + |
| 9213 | + if (fd.bpid != 0xff) { |
| 9214 | + skb_recycle(skb); |
| 9215 | + /* skb_recycle() reserves NET_SKB_PAD as skb headroom, |
| 9216 | + * but we need the skb to look as if returned by build_skb(). |
| 9217 | + * We need to manually adjust the tailptr as well. |
| 9218 | + */ |
| 9219 | + skb->data = skb->head + offset; |
| 9220 | + skb_reset_tail_pointer(skb); |
| 9221 | + |
| 9222 | + (*countptr)++; |
| 9223 | + percpu_priv->tx_returned++; |
| 9224 | + } |
| 9225 | + |
| 9226 | + if (unlikely(dpa_xmit(priv, percpu_stats, &fd, egress_fq, conf_fq) < 0)) |
| 9227 | + goto xmit_failed; |
| 9228 | + |
| 9229 | + return NETDEV_TX_OK; |
| 9230 | + |
| 9231 | +xmit_failed: |
| 9232 | + if (fd.bpid != 0xff) { |
| 9233 | + (*countptr)--; |
| 9234 | + percpu_priv->tx_returned--; |
| 9235 | + dpa_fd_release(net_dev, &fd); |
| 9236 | + percpu_stats->tx_errors++; |
| 9237 | + return NETDEV_TX_OK; |
| 9238 | + } |
| 9239 | + _dpa_cleanup_tx_fd(priv, &fd); |
| 9240 | +skb_to_fd_failed: |
| 9241 | +enomem: |
| 9242 | + percpu_stats->tx_errors++; |
| 9243 | + dev_kfree_skb(skb); |
| 9244 | + return NETDEV_TX_OK; |
| 9245 | +} |
| 9246 | +EXPORT_SYMBOL(dpa_tx_extended); |
| 9247 | --- /dev/null |
| 9248 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sysfs.c |
| 9249 | @@ -0,0 +1,278 @@ |
| 9250 | +/* Copyright 2008-2012 Freescale Semiconductor Inc. |
| 9251 | + * |
| 9252 | + * Redistribution and use in source and binary forms, with or without |
| 9253 | + * modification, are permitted provided that the following conditions are met: |
| 9254 | + * * Redistributions of source code must retain the above copyright |
| 9255 | + * notice, this list of conditions and the following disclaimer. |
| 9256 | + * * Redistributions in binary form must reproduce the above copyright |
| 9257 | + * notice, this list of conditions and the following disclaimer in the |
| 9258 | + * documentation and/or other materials provided with the distribution. |
| 9259 | + * * Neither the name of Freescale Semiconductor nor the |
| 9260 | + * names of its contributors may be used to endorse or promote products |
| 9261 | + * derived from this software without specific prior written permission. |
| 9262 | + * |
| 9263 | + * |
| 9264 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 9265 | + * GNU General Public License ("GPL") as published by the Free Software |
| 9266 | + * Foundation, either version 2 of that License or (at your option) any |
| 9267 | + * later version. |
| 9268 | + * |
| 9269 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 9270 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 9271 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 9272 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 9273 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 9274 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 9275 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 9276 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 9277 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 9278 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 9279 | + */ |
| 9280 | + |
| 9281 | +#include <linux/init.h> |
| 9282 | +#include <linux/module.h> |
| 9283 | +#include <linux/kthread.h> |
| 9284 | +#include <linux/io.h> |
| 9285 | +#include <linux/of_net.h> |
| 9286 | +#include "dpaa_eth.h" |
| 9287 | +#include "mac.h" /* struct mac_device */ |
| 9288 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 9289 | +#include "dpaa_1588.h" |
| 9290 | +#endif |
| 9291 | + |
| 9292 | +static ssize_t dpaa_eth_show_addr(struct device *dev, |
| 9293 | + struct device_attribute *attr, char *buf) |
| 9294 | +{ |
| 9295 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9296 | + struct mac_device *mac_dev = priv->mac_dev; |
| 9297 | + |
| 9298 | + if (mac_dev) |
| 9299 | + return sprintf(buf, "%llx", |
| 9300 | + (unsigned long long)mac_dev->res->start); |
| 9301 | + else |
| 9302 | + return sprintf(buf, "none"); |
| 9303 | +} |
| 9304 | + |
| 9305 | +static ssize_t dpaa_eth_show_type(struct device *dev, |
| 9306 | + struct device_attribute *attr, char *buf) |
| 9307 | +{ |
| 9308 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9309 | + ssize_t res = 0; |
| 9310 | + |
| 9311 | + if (priv) |
| 9312 | + res = sprintf(buf, "%s", priv->if_type); |
| 9313 | + |
| 9314 | + return res; |
| 9315 | +} |
| 9316 | + |
| 9317 | +static ssize_t dpaa_eth_show_fqids(struct device *dev, |
| 9318 | + struct device_attribute *attr, char *buf) |
| 9319 | +{ |
| 9320 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9321 | + ssize_t bytes = 0; |
| 9322 | + int i = 0; |
| 9323 | + char *str; |
| 9324 | + struct dpa_fq *fq; |
| 9325 | + struct dpa_fq *tmp; |
| 9326 | + struct dpa_fq *prev = NULL; |
| 9327 | + u32 first_fqid = 0; |
| 9328 | + u32 last_fqid = 0; |
| 9329 | + char *prevstr = NULL; |
| 9330 | + |
| 9331 | + list_for_each_entry_safe(fq, tmp, &priv->dpa_fq_list, list) { |
| 9332 | + switch (fq->fq_type) { |
| 9333 | + case FQ_TYPE_RX_DEFAULT: |
| 9334 | + str = "Rx default"; |
| 9335 | + break; |
| 9336 | + case FQ_TYPE_RX_ERROR: |
| 9337 | + str = "Rx error"; |
| 9338 | + break; |
| 9339 | + case FQ_TYPE_RX_PCD: |
| 9340 | + str = "Rx PCD"; |
| 9341 | + break; |
| 9342 | + case FQ_TYPE_TX_CONFIRM: |
| 9343 | + str = "Tx default confirmation"; |
| 9344 | + break; |
| 9345 | + case FQ_TYPE_TX_CONF_MQ: |
| 9346 | + str = "Tx confirmation (mq)"; |
| 9347 | + break; |
| 9348 | + case FQ_TYPE_TX_ERROR: |
| 9349 | + str = "Tx error"; |
| 9350 | + break; |
| 9351 | + case FQ_TYPE_TX: |
| 9352 | + str = "Tx"; |
| 9353 | + break; |
| 9354 | + case FQ_TYPE_RX_PCD_HI_PRIO: |
| 9355 | + str ="Rx PCD High Priority"; |
| 9356 | + break; |
| 9357 | + default: |
| 9358 | + str = "Unknown"; |
| 9359 | + } |
| 9360 | + |
| 9361 | + if (prev && (abs(fq->fqid - prev->fqid) != 1 || |
| 9362 | + str != prevstr)) { |
| 9363 | + if (last_fqid == first_fqid) |
| 9364 | + bytes += sprintf(buf + bytes, |
| 9365 | + "%s: %d\n", prevstr, prev->fqid); |
| 9366 | + else |
| 9367 | + bytes += sprintf(buf + bytes, |
| 9368 | + "%s: %d - %d\n", prevstr, |
| 9369 | + first_fqid, last_fqid); |
| 9370 | + } |
| 9371 | + |
| 9372 | + if (prev && abs(fq->fqid - prev->fqid) == 1 && str == prevstr) |
| 9373 | + last_fqid = fq->fqid; |
| 9374 | + else |
| 9375 | + first_fqid = last_fqid = fq->fqid; |
| 9376 | + |
| 9377 | + prev = fq; |
| 9378 | + prevstr = str; |
| 9379 | + i++; |
| 9380 | + } |
| 9381 | + |
| 9382 | + if (prev) { |
| 9383 | + if (last_fqid == first_fqid) |
| 9384 | + bytes += sprintf(buf + bytes, "%s: %d\n", prevstr, |
| 9385 | + prev->fqid); |
| 9386 | + else |
| 9387 | + bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr, |
| 9388 | + first_fqid, last_fqid); |
| 9389 | + } |
| 9390 | + |
| 9391 | + return bytes; |
| 9392 | +} |
| 9393 | + |
| 9394 | +static ssize_t dpaa_eth_show_bpids(struct device *dev, |
| 9395 | + struct device_attribute *attr, char *buf) |
| 9396 | +{ |
| 9397 | + ssize_t bytes = 0; |
| 9398 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9399 | + struct dpa_bp *dpa_bp = priv->dpa_bp; |
| 9400 | + int i = 0; |
| 9401 | + |
| 9402 | + for (i = 0; i < priv->bp_count; i++) |
| 9403 | + bytes += snprintf(buf + bytes, PAGE_SIZE, "%u\n", |
| 9404 | + dpa_bp[i].bpid); |
| 9405 | + |
| 9406 | + return bytes; |
| 9407 | +} |
| 9408 | + |
| 9409 | +static ssize_t dpaa_eth_show_mac_regs(struct device *dev, |
| 9410 | + struct device_attribute *attr, char *buf) |
| 9411 | +{ |
| 9412 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9413 | + struct mac_device *mac_dev = priv->mac_dev; |
| 9414 | + int n = 0; |
| 9415 | + |
| 9416 | + if (mac_dev) |
| 9417 | + n = fm_mac_dump_regs(mac_dev, buf, n); |
| 9418 | + else |
| 9419 | + return sprintf(buf, "no mac registers\n"); |
| 9420 | + |
| 9421 | + return n; |
| 9422 | +} |
| 9423 | + |
| 9424 | +static ssize_t dpaa_eth_show_mac_rx_stats(struct device *dev, |
| 9425 | + struct device_attribute *attr, char *buf) |
| 9426 | +{ |
| 9427 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9428 | + struct mac_device *mac_dev = priv->mac_dev; |
| 9429 | + int n = 0; |
| 9430 | + |
| 9431 | + if (mac_dev) |
| 9432 | + n = fm_mac_dump_rx_stats(mac_dev, buf, n); |
| 9433 | + else |
| 9434 | + return sprintf(buf, "no mac rx stats\n"); |
| 9435 | + |
| 9436 | + return n; |
| 9437 | +} |
| 9438 | + |
| 9439 | +static ssize_t dpaa_eth_show_mac_tx_stats(struct device *dev, |
| 9440 | + struct device_attribute *attr, char *buf) |
| 9441 | +{ |
| 9442 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9443 | + struct mac_device *mac_dev = priv->mac_dev; |
| 9444 | + int n = 0; |
| 9445 | + |
| 9446 | + if (mac_dev) |
| 9447 | + n = fm_mac_dump_tx_stats(mac_dev, buf, n); |
| 9448 | + else |
| 9449 | + return sprintf(buf, "no mac tx stats\n"); |
| 9450 | + |
| 9451 | + return n; |
| 9452 | +} |
| 9453 | + |
| 9454 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 9455 | +static ssize_t dpaa_eth_show_ptp_1588(struct device *dev, |
| 9456 | + struct device_attribute *attr, char *buf) |
| 9457 | +{ |
| 9458 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9459 | + |
| 9460 | + if (priv->tsu && priv->tsu->valid) |
| 9461 | + return sprintf(buf, "1\n"); |
| 9462 | + else |
| 9463 | + return sprintf(buf, "0\n"); |
| 9464 | +} |
| 9465 | + |
| 9466 | +static ssize_t dpaa_eth_set_ptp_1588(struct device *dev, |
| 9467 | + struct device_attribute *attr, |
| 9468 | + const char *buf, size_t count) |
| 9469 | +{ |
| 9470 | + struct dpa_priv_s *priv = netdev_priv(to_net_dev(dev)); |
| 9471 | + unsigned int num; |
| 9472 | + unsigned long flags; |
| 9473 | + |
| 9474 | + if (kstrtouint(buf, 0, &num) < 0) |
| 9475 | + return -EINVAL; |
| 9476 | + |
| 9477 | + local_irq_save(flags); |
| 9478 | + |
| 9479 | + if (num) { |
| 9480 | + if (priv->tsu) |
| 9481 | + priv->tsu->valid = TRUE; |
| 9482 | + } else { |
| 9483 | + if (priv->tsu) |
| 9484 | + priv->tsu->valid = FALSE; |
| 9485 | + } |
| 9486 | + |
| 9487 | + local_irq_restore(flags); |
| 9488 | + |
| 9489 | + return count; |
| 9490 | +} |
| 9491 | +#endif |
| 9492 | + |
| 9493 | +static struct device_attribute dpaa_eth_attrs[] = { |
| 9494 | + __ATTR(device_addr, S_IRUGO, dpaa_eth_show_addr, NULL), |
| 9495 | + __ATTR(device_type, S_IRUGO, dpaa_eth_show_type, NULL), |
| 9496 | + __ATTR(fqids, S_IRUGO, dpaa_eth_show_fqids, NULL), |
| 9497 | + __ATTR(bpids, S_IRUGO, dpaa_eth_show_bpids, NULL), |
| 9498 | + __ATTR(mac_regs, S_IRUGO, dpaa_eth_show_mac_regs, NULL), |
| 9499 | + __ATTR(mac_rx_stats, S_IRUGO, dpaa_eth_show_mac_rx_stats, NULL), |
| 9500 | + __ATTR(mac_tx_stats, S_IRUGO, dpaa_eth_show_mac_tx_stats, NULL), |
| 9501 | +#ifdef CONFIG_FSL_DPAA_1588 |
| 9502 | + __ATTR(ptp_1588, S_IRUGO | S_IWUSR, dpaa_eth_show_ptp_1588, |
| 9503 | + dpaa_eth_set_ptp_1588), |
| 9504 | +#endif |
| 9505 | +}; |
| 9506 | + |
| 9507 | +void dpaa_eth_sysfs_init(struct device *dev) |
| 9508 | +{ |
| 9509 | + int i; |
| 9510 | + |
| 9511 | + for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++) |
| 9512 | + if (device_create_file(dev, &dpaa_eth_attrs[i])) { |
| 9513 | + dev_err(dev, "Error creating sysfs file\n"); |
| 9514 | + while (i > 0) |
| 9515 | + device_remove_file(dev, &dpaa_eth_attrs[--i]); |
| 9516 | + return; |
| 9517 | + } |
| 9518 | +} |
| 9519 | +EXPORT_SYMBOL(dpaa_eth_sysfs_init); |
| 9520 | + |
| 9521 | +void dpaa_eth_sysfs_remove(struct device *dev) |
| 9522 | +{ |
| 9523 | + int i; |
| 9524 | + |
| 9525 | + for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++) |
| 9526 | + device_remove_file(dev, &dpaa_eth_attrs[i]); |
| 9527 | +} |
| 9528 | --- /dev/null |
| 9529 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_trace.h |
| 9530 | @@ -0,0 +1,144 @@ |
| 9531 | +/* Copyright 2013 Freescale Semiconductor Inc. |
| 9532 | + * |
| 9533 | + * Redistribution and use in source and binary forms, with or without |
| 9534 | + * modification, are permitted provided that the following conditions are met: |
| 9535 | + * * Redistributions of source code must retain the above copyright |
| 9536 | + * notice, this list of conditions and the following disclaimer. |
| 9537 | + * * Redistributions in binary form must reproduce the above copyright |
| 9538 | + * notice, this list of conditions and the following disclaimer in the |
| 9539 | + * documentation and/or other materials provided with the distribution. |
| 9540 | + * * Neither the name of Freescale Semiconductor nor the |
| 9541 | + * names of its contributors may be used to endorse or promote products |
| 9542 | + * derived from this software without specific prior written permission. |
| 9543 | + * |
| 9544 | + * |
| 9545 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 9546 | + * GNU General Public License ("GPL") as published by the Free Software |
| 9547 | + * Foundation, either version 2 of that License or (at your option) any |
| 9548 | + * later version. |
| 9549 | + * |
| 9550 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 9551 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 9552 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 9553 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 9554 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 9555 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 9556 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 9557 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 9558 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 9559 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 9560 | + */ |
| 9561 | + |
| 9562 | +#undef TRACE_SYSTEM |
| 9563 | +#define TRACE_SYSTEM dpaa_eth |
| 9564 | + |
| 9565 | +#if !defined(_DPAA_ETH_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) |
| 9566 | +#define _DPAA_ETH_TRACE_H |
| 9567 | + |
| 9568 | +#include <linux/skbuff.h> |
| 9569 | +#include <linux/netdevice.h> |
| 9570 | +#include "dpaa_eth.h" |
| 9571 | +#include <linux/tracepoint.h> |
| 9572 | + |
| 9573 | +#define fd_format_name(format) { qm_fd_##format, #format } |
| 9574 | +#define fd_format_list \ |
| 9575 | + fd_format_name(contig), \ |
| 9576 | + fd_format_name(sg) |
| 9577 | +#define TR_FMT "[%s] fqid=%d, fd: addr=0x%llx, format=%s, off=%u, len=%u," \ |
| 9578 | + " status=0x%08x" |
| 9579 | + |
| 9580 | +/* This is used to declare a class of events. |
| 9581 | + * individual events of this type will be defined below. |
| 9582 | + */ |
| 9583 | + |
| 9584 | +/* Store details about a frame descriptor and the FQ on which it was |
| 9585 | + * transmitted/received. |
| 9586 | + */ |
| 9587 | +DECLARE_EVENT_CLASS(dpaa_eth_fd, |
| 9588 | + /* Trace function prototype */ |
| 9589 | + TP_PROTO(struct net_device *netdev, |
| 9590 | + struct qman_fq *fq, |
| 9591 | + const struct qm_fd *fd), |
| 9592 | + |
| 9593 | + /* Repeat argument list here */ |
| 9594 | + TP_ARGS(netdev, fq, fd), |
| 9595 | + |
| 9596 | + /* A structure containing the relevant information we want to record. |
| 9597 | + * Declare name and type for each normal element, name, type and size |
| 9598 | + * for arrays. Use __string for variable length strings. |
| 9599 | + */ |
| 9600 | + TP_STRUCT__entry( |
| 9601 | + __field(u32, fqid) |
| 9602 | + __field(u64, fd_addr) |
| 9603 | + __field(u8, fd_format) |
| 9604 | + __field(u16, fd_offset) |
| 9605 | + __field(u32, fd_length) |
| 9606 | + __field(u32, fd_status) |
| 9607 | + __string(name, netdev->name) |
| 9608 | + ), |
| 9609 | + |
| 9610 | + /* The function that assigns values to the above declared fields */ |
| 9611 | + TP_fast_assign( |
| 9612 | + __entry->fqid = fq->fqid; |
| 9613 | + __entry->fd_addr = qm_fd_addr_get64(fd); |
| 9614 | + __entry->fd_format = fd->format; |
| 9615 | + __entry->fd_offset = dpa_fd_offset(fd); |
| 9616 | + __entry->fd_length = dpa_fd_length(fd); |
| 9617 | + __entry->fd_status = fd->status; |
| 9618 | + __assign_str(name, netdev->name); |
| 9619 | + ), |
| 9620 | + |
| 9621 | + /* This is what gets printed when the trace event is triggered */ |
| 9622 | + /* TODO: print the status using __print_flags() */ |
| 9623 | + TP_printk(TR_FMT, |
| 9624 | + __get_str(name), __entry->fqid, __entry->fd_addr, |
| 9625 | + __print_symbolic(__entry->fd_format, fd_format_list), |
| 9626 | + __entry->fd_offset, __entry->fd_length, __entry->fd_status) |
| 9627 | +); |
| 9628 | + |
| 9629 | +/* Now declare events of the above type. Format is: |
| 9630 | + * DEFINE_EVENT(class, name, proto, args), with proto and args same as for class |
| 9631 | + */ |
| 9632 | + |
| 9633 | +/* Tx (egress) fd */ |
| 9634 | +DEFINE_EVENT(dpaa_eth_fd, dpa_tx_fd, |
| 9635 | + |
| 9636 | + TP_PROTO(struct net_device *netdev, |
| 9637 | + struct qman_fq *fq, |
| 9638 | + const struct qm_fd *fd), |
| 9639 | + |
| 9640 | + TP_ARGS(netdev, fq, fd) |
| 9641 | +); |
| 9642 | + |
| 9643 | +/* Rx fd */ |
| 9644 | +DEFINE_EVENT(dpaa_eth_fd, dpa_rx_fd, |
| 9645 | + |
| 9646 | + TP_PROTO(struct net_device *netdev, |
| 9647 | + struct qman_fq *fq, |
| 9648 | + const struct qm_fd *fd), |
| 9649 | + |
| 9650 | + TP_ARGS(netdev, fq, fd) |
| 9651 | +); |
| 9652 | + |
| 9653 | +/* Tx confirmation fd */ |
| 9654 | +DEFINE_EVENT(dpaa_eth_fd, dpa_tx_conf_fd, |
| 9655 | + |
| 9656 | + TP_PROTO(struct net_device *netdev, |
| 9657 | + struct qman_fq *fq, |
| 9658 | + const struct qm_fd *fd), |
| 9659 | + |
| 9660 | + TP_ARGS(netdev, fq, fd) |
| 9661 | +); |
| 9662 | + |
| 9663 | +/* If only one event of a certain type needs to be declared, use TRACE_EVENT(). |
| 9664 | + * The syntax is the same as for DECLARE_EVENT_CLASS(). |
| 9665 | + */ |
| 9666 | + |
| 9667 | +#endif /* _DPAA_ETH_TRACE_H */ |
| 9668 | + |
| 9669 | +/* This must be outside ifdef _DPAA_ETH_TRACE_H */ |
| 9670 | +#undef TRACE_INCLUDE_PATH |
| 9671 | +#define TRACE_INCLUDE_PATH . |
| 9672 | +#undef TRACE_INCLUDE_FILE |
| 9673 | +#define TRACE_INCLUDE_FILE dpaa_eth_trace |
| 9674 | +#include <trace/define_trace.h> |
| 9675 | --- /dev/null |
| 9676 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_ethtool.c |
| 9677 | @@ -0,0 +1,544 @@ |
| 9678 | +/* Copyright 2008-2012 Freescale Semiconductor, Inc. |
| 9679 | + * |
| 9680 | + * Redistribution and use in source and binary forms, with or without |
| 9681 | + * modification, are permitted provided that the following conditions are met: |
| 9682 | + * * Redistributions of source code must retain the above copyright |
| 9683 | + * notice, this list of conditions and the following disclaimer. |
| 9684 | + * * Redistributions in binary form must reproduce the above copyright |
| 9685 | + * notice, this list of conditions and the following disclaimer in the |
| 9686 | + * documentation and/or other materials provided with the distribution. |
| 9687 | + * * Neither the name of Freescale Semiconductor nor the |
| 9688 | + * names of its contributors may be used to endorse or promote products |
| 9689 | + * derived from this software without specific prior written permission. |
| 9690 | + * |
| 9691 | + * |
| 9692 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 9693 | + * GNU General Public License ("GPL") as published by the Free Software |
| 9694 | + * Foundation, either version 2 of that License or (at your option) any |
| 9695 | + * later version. |
| 9696 | + * |
| 9697 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 9698 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 9699 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 9700 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 9701 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 9702 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 9703 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 9704 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 9705 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 9706 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 9707 | + */ |
| 9708 | + |
| 9709 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 9710 | +#define pr_fmt(fmt) \ |
| 9711 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 9712 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 9713 | +#else |
| 9714 | +#define pr_fmt(fmt) \ |
| 9715 | + KBUILD_MODNAME ": " fmt |
| 9716 | +#endif |
| 9717 | + |
| 9718 | +#include <linux/string.h> |
| 9719 | + |
| 9720 | +#include "dpaa_eth.h" |
| 9721 | +#include "mac.h" /* struct mac_device */ |
| 9722 | +#include "dpaa_eth_common.h" |
| 9723 | + |
| 9724 | +static const char dpa_stats_percpu[][ETH_GSTRING_LEN] = { |
| 9725 | + "interrupts", |
| 9726 | + "rx packets", |
| 9727 | + "tx packets", |
| 9728 | + "tx recycled", |
| 9729 | + "tx confirm", |
| 9730 | + "tx S/G", |
| 9731 | + "rx S/G", |
| 9732 | + "tx error", |
| 9733 | + "rx error", |
| 9734 | + "bp count" |
| 9735 | +}; |
| 9736 | + |
| 9737 | +static char dpa_stats_global[][ETH_GSTRING_LEN] = { |
| 9738 | + /* dpa rx errors */ |
| 9739 | + "rx dma error", |
| 9740 | + "rx frame physical error", |
| 9741 | + "rx frame size error", |
| 9742 | + "rx header error", |
| 9743 | + "rx csum error", |
| 9744 | + |
| 9745 | + /* demultiplexing errors */ |
| 9746 | + "qman cg_tdrop", |
| 9747 | + "qman wred", |
| 9748 | + "qman error cond", |
| 9749 | + "qman early window", |
| 9750 | + "qman late window", |
| 9751 | + "qman fq tdrop", |
| 9752 | + "qman fq retired", |
| 9753 | + "qman orp disabled", |
| 9754 | + |
| 9755 | + /* congestion related stats */ |
| 9756 | + "congestion time (ms)", |
| 9757 | + "entered congestion", |
| 9758 | + "congested (0/1)" |
| 9759 | +}; |
| 9760 | + |
| 9761 | +#define DPA_STATS_PERCPU_LEN ARRAY_SIZE(dpa_stats_percpu) |
| 9762 | +#define DPA_STATS_GLOBAL_LEN ARRAY_SIZE(dpa_stats_global) |
| 9763 | + |
| 9764 | +static int __cold dpa_get_settings(struct net_device *net_dev, |
| 9765 | + struct ethtool_cmd *et_cmd) |
| 9766 | +{ |
| 9767 | + int _errno; |
| 9768 | + struct dpa_priv_s *priv; |
| 9769 | + |
| 9770 | + priv = netdev_priv(net_dev); |
| 9771 | + |
| 9772 | + if (priv->mac_dev == NULL) { |
| 9773 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9774 | + return -ENODEV; |
| 9775 | + } |
| 9776 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 9777 | + netdev_dbg(net_dev, "phy device not initialized\n"); |
| 9778 | + return 0; |
| 9779 | + } |
| 9780 | + |
| 9781 | + _errno = phy_ethtool_gset(priv->mac_dev->phy_dev, et_cmd); |
| 9782 | + if (unlikely(_errno < 0)) |
| 9783 | + netdev_err(net_dev, "phy_ethtool_gset() = %d\n", _errno); |
| 9784 | + |
| 9785 | + return _errno; |
| 9786 | +} |
| 9787 | + |
| 9788 | +static int __cold dpa_set_settings(struct net_device *net_dev, |
| 9789 | + struct ethtool_cmd *et_cmd) |
| 9790 | +{ |
| 9791 | + int _errno; |
| 9792 | + struct dpa_priv_s *priv; |
| 9793 | + |
| 9794 | + priv = netdev_priv(net_dev); |
| 9795 | + |
| 9796 | + if (priv->mac_dev == NULL) { |
| 9797 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9798 | + return -ENODEV; |
| 9799 | + } |
| 9800 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 9801 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 9802 | + return -ENODEV; |
| 9803 | + } |
| 9804 | + |
| 9805 | + _errno = phy_ethtool_sset(priv->mac_dev->phy_dev, et_cmd); |
| 9806 | + if (unlikely(_errno < 0)) |
| 9807 | + netdev_err(net_dev, "phy_ethtool_sset() = %d\n", _errno); |
| 9808 | + |
| 9809 | + return _errno; |
| 9810 | +} |
| 9811 | + |
| 9812 | +static void __cold dpa_get_drvinfo(struct net_device *net_dev, |
| 9813 | + struct ethtool_drvinfo *drvinfo) |
| 9814 | +{ |
| 9815 | + int _errno; |
| 9816 | + |
| 9817 | + strncpy(drvinfo->driver, KBUILD_MODNAME, |
| 9818 | + sizeof(drvinfo->driver) - 1)[sizeof(drvinfo->driver)-1] = 0; |
| 9819 | + _errno = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), |
| 9820 | + "%X", 0); |
| 9821 | + |
| 9822 | + if (unlikely(_errno >= sizeof(drvinfo->fw_version))) { |
| 9823 | + /* Truncated output */ |
| 9824 | + netdev_notice(net_dev, "snprintf() = %d\n", _errno); |
| 9825 | + } else if (unlikely(_errno < 0)) { |
| 9826 | + netdev_warn(net_dev, "snprintf() = %d\n", _errno); |
| 9827 | + memset(drvinfo->fw_version, 0, sizeof(drvinfo->fw_version)); |
| 9828 | + } |
| 9829 | + strncpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent), |
| 9830 | + sizeof(drvinfo->bus_info)-1)[sizeof(drvinfo->bus_info)-1] = 0; |
| 9831 | +} |
| 9832 | + |
| 9833 | +static uint32_t __cold dpa_get_msglevel(struct net_device *net_dev) |
| 9834 | +{ |
| 9835 | + return ((struct dpa_priv_s *)netdev_priv(net_dev))->msg_enable; |
| 9836 | +} |
| 9837 | + |
| 9838 | +static void __cold dpa_set_msglevel(struct net_device *net_dev, |
| 9839 | + uint32_t msg_enable) |
| 9840 | +{ |
| 9841 | + ((struct dpa_priv_s *)netdev_priv(net_dev))->msg_enable = msg_enable; |
| 9842 | +} |
| 9843 | + |
| 9844 | +static int __cold dpa_nway_reset(struct net_device *net_dev) |
| 9845 | +{ |
| 9846 | + int _errno; |
| 9847 | + struct dpa_priv_s *priv; |
| 9848 | + |
| 9849 | + priv = netdev_priv(net_dev); |
| 9850 | + |
| 9851 | + if (priv->mac_dev == NULL) { |
| 9852 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9853 | + return -ENODEV; |
| 9854 | + } |
| 9855 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 9856 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 9857 | + return -ENODEV; |
| 9858 | + } |
| 9859 | + |
| 9860 | + _errno = 0; |
| 9861 | + if (priv->mac_dev->phy_dev->autoneg) { |
| 9862 | + _errno = phy_start_aneg(priv->mac_dev->phy_dev); |
| 9863 | + if (unlikely(_errno < 0)) |
| 9864 | + netdev_err(net_dev, "phy_start_aneg() = %d\n", |
| 9865 | + _errno); |
| 9866 | + } |
| 9867 | + |
| 9868 | + return _errno; |
| 9869 | +} |
| 9870 | + |
| 9871 | +static void __cold dpa_get_pauseparam(struct net_device *net_dev, |
| 9872 | + struct ethtool_pauseparam *epause) |
| 9873 | +{ |
| 9874 | + struct dpa_priv_s *priv; |
| 9875 | + struct mac_device *mac_dev; |
| 9876 | + struct phy_device *phy_dev; |
| 9877 | + |
| 9878 | + priv = netdev_priv(net_dev); |
| 9879 | + mac_dev = priv->mac_dev; |
| 9880 | + |
| 9881 | + if (mac_dev == NULL) { |
| 9882 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9883 | + return; |
| 9884 | + } |
| 9885 | + |
| 9886 | + phy_dev = mac_dev->phy_dev; |
| 9887 | + if (unlikely(phy_dev == NULL)) { |
| 9888 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 9889 | + return; |
| 9890 | + } |
| 9891 | + |
| 9892 | + epause->autoneg = mac_dev->autoneg_pause; |
| 9893 | + epause->rx_pause = mac_dev->rx_pause_active; |
| 9894 | + epause->tx_pause = mac_dev->tx_pause_active; |
| 9895 | +} |
| 9896 | + |
| 9897 | +static int __cold dpa_set_pauseparam(struct net_device *net_dev, |
| 9898 | + struct ethtool_pauseparam *epause) |
| 9899 | +{ |
| 9900 | + struct dpa_priv_s *priv; |
| 9901 | + struct mac_device *mac_dev; |
| 9902 | + struct phy_device *phy_dev; |
| 9903 | + int _errno; |
| 9904 | + u32 newadv, oldadv; |
| 9905 | + bool rx_pause, tx_pause; |
| 9906 | + |
| 9907 | + priv = netdev_priv(net_dev); |
| 9908 | + mac_dev = priv->mac_dev; |
| 9909 | + |
| 9910 | + if (mac_dev == NULL) { |
| 9911 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9912 | + return -ENODEV; |
| 9913 | + } |
| 9914 | + |
| 9915 | + phy_dev = mac_dev->phy_dev; |
| 9916 | + if (unlikely(phy_dev == NULL)) { |
| 9917 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 9918 | + return -ENODEV; |
| 9919 | + } |
| 9920 | + |
| 9921 | + if (!(phy_dev->supported & SUPPORTED_Pause) || |
| 9922 | + (!(phy_dev->supported & SUPPORTED_Asym_Pause) && |
| 9923 | + (epause->rx_pause != epause->tx_pause))) |
| 9924 | + return -EINVAL; |
| 9925 | + |
| 9926 | + /* The MAC should know how to handle PAUSE frame autonegotiation before |
| 9927 | + * adjust_link is triggered by a forced renegotiation of sym/asym PAUSE |
| 9928 | + * settings. |
| 9929 | + */ |
| 9930 | + mac_dev->autoneg_pause = !!epause->autoneg; |
| 9931 | + mac_dev->rx_pause_req = !!epause->rx_pause; |
| 9932 | + mac_dev->tx_pause_req = !!epause->tx_pause; |
| 9933 | + |
| 9934 | + /* Determine the sym/asym advertised PAUSE capabilities from the desired |
| 9935 | + * rx/tx pause settings. |
| 9936 | + */ |
| 9937 | + newadv = 0; |
| 9938 | + if (epause->rx_pause) |
| 9939 | + newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause; |
| 9940 | + if (epause->tx_pause) |
| 9941 | + newadv |= ADVERTISED_Asym_Pause; |
| 9942 | + |
| 9943 | + oldadv = phy_dev->advertising & |
| 9944 | + (ADVERTISED_Pause | ADVERTISED_Asym_Pause); |
| 9945 | + |
| 9946 | + /* If there are differences between the old and the new advertised |
| 9947 | + * values, restart PHY autonegotiation and advertise the new values. |
| 9948 | + */ |
| 9949 | + if (oldadv != newadv) { |
| 9950 | + phy_dev->advertising &= ~(ADVERTISED_Pause |
| 9951 | + | ADVERTISED_Asym_Pause); |
| 9952 | + phy_dev->advertising |= newadv; |
| 9953 | + if (phy_dev->autoneg) { |
| 9954 | + _errno = phy_start_aneg(phy_dev); |
| 9955 | + if (unlikely(_errno < 0)) |
| 9956 | + netdev_err(net_dev, "phy_start_aneg() = %d\n", |
| 9957 | + _errno); |
| 9958 | + } |
| 9959 | + } |
| 9960 | + |
| 9961 | + get_pause_cfg(mac_dev, &rx_pause, &tx_pause); |
| 9962 | + _errno = set_mac_active_pause(mac_dev, rx_pause, tx_pause); |
| 9963 | + if (unlikely(_errno < 0)) |
| 9964 | + netdev_err(net_dev, "set_mac_active_pause() = %d\n", _errno); |
| 9965 | + |
| 9966 | + return _errno; |
| 9967 | +} |
| 9968 | + |
| 9969 | +#ifdef CONFIG_PM |
| 9970 | +static void dpa_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) |
| 9971 | +{ |
| 9972 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 9973 | + |
| 9974 | + wol->supported = 0; |
| 9975 | + wol->wolopts = 0; |
| 9976 | + |
| 9977 | + if (!priv->wol || !device_can_wakeup(net_dev->dev.parent)) |
| 9978 | + return; |
| 9979 | + |
| 9980 | + if (priv->wol & DPAA_WOL_MAGIC) { |
| 9981 | + wol->supported = WAKE_MAGIC; |
| 9982 | + wol->wolopts = WAKE_MAGIC; |
| 9983 | + } |
| 9984 | +} |
| 9985 | + |
| 9986 | +static int dpa_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) |
| 9987 | +{ |
| 9988 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 9989 | + |
| 9990 | + if (priv->mac_dev == NULL) { |
| 9991 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 9992 | + return -ENODEV; |
| 9993 | + } |
| 9994 | + |
| 9995 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 9996 | + netdev_dbg(net_dev, "phy device not initialized\n"); |
| 9997 | + return -ENODEV; |
| 9998 | + } |
| 9999 | + |
| 10000 | + if (!device_can_wakeup(net_dev->dev.parent) || |
| 10001 | + (wol->wolopts & ~WAKE_MAGIC)) |
| 10002 | + return -EOPNOTSUPP; |
| 10003 | + |
| 10004 | + priv->wol = 0; |
| 10005 | + |
| 10006 | + if (wol->wolopts & WAKE_MAGIC) { |
| 10007 | + priv->wol = DPAA_WOL_MAGIC; |
| 10008 | + device_set_wakeup_enable(net_dev->dev.parent, 1); |
| 10009 | + } else { |
| 10010 | + device_set_wakeup_enable(net_dev->dev.parent, 0); |
| 10011 | + } |
| 10012 | + |
| 10013 | + return 0; |
| 10014 | +} |
| 10015 | +#endif |
| 10016 | + |
| 10017 | +static int dpa_get_eee(struct net_device *net_dev, struct ethtool_eee *et_eee) |
| 10018 | +{ |
| 10019 | + struct dpa_priv_s *priv; |
| 10020 | + |
| 10021 | + priv = netdev_priv(net_dev); |
| 10022 | + if (priv->mac_dev == NULL) { |
| 10023 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 10024 | + return -ENODEV; |
| 10025 | + } |
| 10026 | + |
| 10027 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 10028 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 10029 | + return -ENODEV; |
| 10030 | + } |
| 10031 | + |
| 10032 | + return phy_ethtool_get_eee(priv->mac_dev->phy_dev, et_eee); |
| 10033 | +} |
| 10034 | + |
| 10035 | +static int dpa_set_eee(struct net_device *net_dev, struct ethtool_eee *et_eee) |
| 10036 | +{ |
| 10037 | + struct dpa_priv_s *priv; |
| 10038 | + |
| 10039 | + priv = netdev_priv(net_dev); |
| 10040 | + if (priv->mac_dev == NULL) { |
| 10041 | + netdev_info(net_dev, "This is a MAC-less interface\n"); |
| 10042 | + return -ENODEV; |
| 10043 | + } |
| 10044 | + |
| 10045 | + if (unlikely(priv->mac_dev->phy_dev == NULL)) { |
| 10046 | + netdev_err(net_dev, "phy device not initialized\n"); |
| 10047 | + return -ENODEV; |
| 10048 | + } |
| 10049 | + |
| 10050 | + return phy_ethtool_set_eee(priv->mac_dev->phy_dev, et_eee); |
| 10051 | +} |
| 10052 | + |
| 10053 | +static int dpa_get_sset_count(struct net_device *net_dev, int type) |
| 10054 | +{ |
| 10055 | + unsigned int total_stats, num_stats; |
| 10056 | + |
| 10057 | + num_stats = num_online_cpus() + 1; |
| 10058 | + total_stats = num_stats * DPA_STATS_PERCPU_LEN + DPA_STATS_GLOBAL_LEN; |
| 10059 | + |
| 10060 | + switch (type) { |
| 10061 | + case ETH_SS_STATS: |
| 10062 | + return total_stats; |
| 10063 | + default: |
| 10064 | + return -EOPNOTSUPP; |
| 10065 | + } |
| 10066 | +} |
| 10067 | + |
| 10068 | +static void copy_stats(struct dpa_percpu_priv_s *percpu_priv, int num_cpus, |
| 10069 | + int crr_cpu, u64 bp_count, u64 *data) |
| 10070 | +{ |
| 10071 | + int num_stat_values = num_cpus + 1; |
| 10072 | + int crr_stat = 0; |
| 10073 | + |
| 10074 | + /* update current CPU's stats and also add them to the total values */ |
| 10075 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->in_interrupt; |
| 10076 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->in_interrupt; |
| 10077 | + |
| 10078 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->stats.rx_packets; |
| 10079 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->stats.rx_packets; |
| 10080 | + |
| 10081 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->stats.tx_packets; |
| 10082 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->stats.tx_packets; |
| 10083 | + |
| 10084 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->tx_returned; |
| 10085 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->tx_returned; |
| 10086 | + |
| 10087 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->tx_confirm; |
| 10088 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->tx_confirm; |
| 10089 | + |
| 10090 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->tx_frag_skbuffs; |
| 10091 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->tx_frag_skbuffs; |
| 10092 | + |
| 10093 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->rx_sg; |
| 10094 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->rx_sg; |
| 10095 | + |
| 10096 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->stats.tx_errors; |
| 10097 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->stats.tx_errors; |
| 10098 | + |
| 10099 | + data[crr_stat * num_stat_values + crr_cpu] = percpu_priv->stats.rx_errors; |
| 10100 | + data[crr_stat++ * num_stat_values + num_cpus] += percpu_priv->stats.rx_errors; |
| 10101 | + |
| 10102 | + data[crr_stat * num_stat_values + crr_cpu] = bp_count; |
| 10103 | + data[crr_stat++ * num_stat_values + num_cpus] += bp_count; |
| 10104 | +} |
| 10105 | + |
| 10106 | +static void dpa_get_ethtool_stats(struct net_device *net_dev, |
| 10107 | + struct ethtool_stats *stats, u64 *data) |
| 10108 | +{ |
| 10109 | + u64 bp_count, cg_time, cg_num, cg_status; |
| 10110 | + struct dpa_percpu_priv_s *percpu_priv; |
| 10111 | + struct qm_mcr_querycgr query_cgr; |
| 10112 | + struct dpa_rx_errors rx_errors; |
| 10113 | + struct dpa_ern_cnt ern_cnt; |
| 10114 | + struct dpa_priv_s *priv; |
| 10115 | + unsigned int num_cpus, offset; |
| 10116 | + struct dpa_bp *dpa_bp; |
| 10117 | + int total_stats, i; |
| 10118 | + |
| 10119 | + total_stats = dpa_get_sset_count(net_dev, ETH_SS_STATS); |
| 10120 | + priv = netdev_priv(net_dev); |
| 10121 | + dpa_bp = priv->dpa_bp; |
| 10122 | + num_cpus = num_online_cpus(); |
| 10123 | + bp_count = 0; |
| 10124 | + |
| 10125 | + memset(&rx_errors, 0, sizeof(struct dpa_rx_errors)); |
| 10126 | + memset(&ern_cnt, 0, sizeof(struct dpa_ern_cnt)); |
| 10127 | + memset(data, 0, total_stats * sizeof(u64)); |
| 10128 | + |
| 10129 | + for_each_online_cpu(i) { |
| 10130 | + percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
| 10131 | + |
| 10132 | + if (dpa_bp->percpu_count) |
| 10133 | + bp_count = *(per_cpu_ptr(dpa_bp->percpu_count, i)); |
| 10134 | + |
| 10135 | + rx_errors.dme += percpu_priv->rx_errors.dme; |
| 10136 | + rx_errors.fpe += percpu_priv->rx_errors.fpe; |
| 10137 | + rx_errors.fse += percpu_priv->rx_errors.fse; |
| 10138 | + rx_errors.phe += percpu_priv->rx_errors.phe; |
| 10139 | + rx_errors.cse += percpu_priv->rx_errors.cse; |
| 10140 | + |
| 10141 | + ern_cnt.cg_tdrop += percpu_priv->ern_cnt.cg_tdrop; |
| 10142 | + ern_cnt.wred += percpu_priv->ern_cnt.wred; |
| 10143 | + ern_cnt.err_cond += percpu_priv->ern_cnt.err_cond; |
| 10144 | + ern_cnt.early_window += percpu_priv->ern_cnt.early_window; |
| 10145 | + ern_cnt.late_window += percpu_priv->ern_cnt.late_window; |
| 10146 | + ern_cnt.fq_tdrop += percpu_priv->ern_cnt.fq_tdrop; |
| 10147 | + ern_cnt.fq_retired += percpu_priv->ern_cnt.fq_retired; |
| 10148 | + ern_cnt.orp_zero += percpu_priv->ern_cnt.orp_zero; |
| 10149 | + |
| 10150 | + copy_stats(percpu_priv, num_cpus, i, bp_count, data); |
| 10151 | + } |
| 10152 | + |
| 10153 | + offset = (num_cpus + 1) * DPA_STATS_PERCPU_LEN; |
| 10154 | + memcpy(data + offset, &rx_errors, sizeof(struct dpa_rx_errors)); |
| 10155 | + |
| 10156 | + offset += sizeof(struct dpa_rx_errors) / sizeof(u64); |
| 10157 | + memcpy(data + offset, &ern_cnt, sizeof(struct dpa_ern_cnt)); |
| 10158 | + |
| 10159 | + /* gather congestion related counters */ |
| 10160 | + cg_num = 0; |
| 10161 | + cg_status = 0; |
| 10162 | + cg_time = jiffies_to_msecs(priv->cgr_data.congested_jiffies); |
| 10163 | + if (qman_query_cgr(&priv->cgr_data.cgr, &query_cgr) == 0) { |
| 10164 | + cg_num = priv->cgr_data.cgr_congested_count; |
| 10165 | + cg_status = query_cgr.cgr.cs; |
| 10166 | + |
| 10167 | + /* reset congestion stats (like QMan API does */ |
| 10168 | + priv->cgr_data.congested_jiffies = 0; |
| 10169 | + priv->cgr_data.cgr_congested_count = 0; |
| 10170 | + } |
| 10171 | + |
| 10172 | + offset += sizeof(struct dpa_ern_cnt) / sizeof(u64); |
| 10173 | + data[offset++] = cg_time; |
| 10174 | + data[offset++] = cg_num; |
| 10175 | + data[offset++] = cg_status; |
| 10176 | +} |
| 10177 | + |
| 10178 | +static void dpa_get_strings(struct net_device *net_dev, u32 stringset, u8 *data) |
| 10179 | +{ |
| 10180 | + unsigned int i, j, num_cpus, size; |
| 10181 | + char stat_string_cpu[ETH_GSTRING_LEN]; |
| 10182 | + u8 *strings; |
| 10183 | + |
| 10184 | + strings = data; |
| 10185 | + num_cpus = num_online_cpus(); |
| 10186 | + size = DPA_STATS_GLOBAL_LEN * ETH_GSTRING_LEN; |
| 10187 | + |
| 10188 | + for (i = 0; i < DPA_STATS_PERCPU_LEN; i++) { |
| 10189 | + for (j = 0; j < num_cpus; j++) { |
| 10190 | + snprintf(stat_string_cpu, ETH_GSTRING_LEN, "%s [CPU %d]", dpa_stats_percpu[i], j); |
| 10191 | + memcpy(strings, stat_string_cpu, ETH_GSTRING_LEN); |
| 10192 | + strings += ETH_GSTRING_LEN; |
| 10193 | + } |
| 10194 | + snprintf(stat_string_cpu, ETH_GSTRING_LEN, "%s [TOTAL]", dpa_stats_percpu[i]); |
| 10195 | + memcpy(strings, stat_string_cpu, ETH_GSTRING_LEN); |
| 10196 | + strings += ETH_GSTRING_LEN; |
| 10197 | + } |
| 10198 | + memcpy(strings, dpa_stats_global, size); |
| 10199 | +} |
| 10200 | + |
| 10201 | +const struct ethtool_ops dpa_ethtool_ops = { |
| 10202 | + .get_settings = dpa_get_settings, |
| 10203 | + .set_settings = dpa_set_settings, |
| 10204 | + .get_drvinfo = dpa_get_drvinfo, |
| 10205 | + .get_msglevel = dpa_get_msglevel, |
| 10206 | + .set_msglevel = dpa_set_msglevel, |
| 10207 | + .nway_reset = dpa_nway_reset, |
| 10208 | + .get_pauseparam = dpa_get_pauseparam, |
| 10209 | + .set_pauseparam = dpa_set_pauseparam, |
| 10210 | + .self_test = NULL, /* TODO invoke the cold-boot unit-test? */ |
| 10211 | + .get_link = ethtool_op_get_link, |
| 10212 | + .get_eee = dpa_get_eee, |
| 10213 | + .set_eee = dpa_set_eee, |
| 10214 | + .get_sset_count = dpa_get_sset_count, |
| 10215 | + .get_ethtool_stats = dpa_get_ethtool_stats, |
| 10216 | + .get_strings = dpa_get_strings, |
| 10217 | +#ifdef CONFIG_PM |
| 10218 | + .get_wol = dpa_get_wol, |
| 10219 | + .set_wol = dpa_set_wol, |
| 10220 | +#endif |
| 10221 | +}; |
| 10222 | --- /dev/null |
| 10223 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_ptp.c |
| 10224 | @@ -0,0 +1,290 @@ |
| 10225 | +/* |
| 10226 | + * DPAA Ethernet Driver -- PTP 1588 clock using the dTSEC |
| 10227 | + * |
| 10228 | + * Author: Yangbo Lu <yangbo.lu@freescale.com> |
| 10229 | + * |
| 10230 | + * Copyright 2014 Freescale Semiconductor, Inc. |
| 10231 | + * |
| 10232 | + * This program is free software; you can redistribute it and/or modify it |
| 10233 | + * under the terms of the GNU General Public License as published by the |
| 10234 | + * Free Software Foundation; either version 2 of the License, or (at your |
| 10235 | + * option) any later version. |
| 10236 | +*/ |
| 10237 | + |
| 10238 | +#include <linux/device.h> |
| 10239 | +#include <linux/hrtimer.h> |
| 10240 | +#include <linux/init.h> |
| 10241 | +#include <linux/interrupt.h> |
| 10242 | +#include <linux/kernel.h> |
| 10243 | +#include <linux/module.h> |
| 10244 | +#include <linux/of.h> |
| 10245 | +#include <linux/of_platform.h> |
| 10246 | +#include <linux/timex.h> |
| 10247 | +#include <linux/io.h> |
| 10248 | + |
| 10249 | +#include <linux/ptp_clock_kernel.h> |
| 10250 | + |
| 10251 | +#include "dpaa_eth.h" |
| 10252 | +#include "mac.h" |
| 10253 | + |
| 10254 | +struct ptp_clock *clock; |
| 10255 | + |
| 10256 | +static struct mac_device *mac_dev; |
| 10257 | +static u32 freqCompensation; |
| 10258 | + |
| 10259 | +/* Bit definitions for the TMR_CTRL register */ |
| 10260 | +#define ALM1P (1<<31) /* Alarm1 output polarity */ |
| 10261 | +#define ALM2P (1<<30) /* Alarm2 output polarity */ |
| 10262 | +#define FS (1<<28) /* FIPER start indication */ |
| 10263 | +#define PP1L (1<<27) /* Fiper1 pulse loopback mode enabled. */ |
| 10264 | +#define PP2L (1<<26) /* Fiper2 pulse loopback mode enabled. */ |
| 10265 | +#define TCLK_PERIOD_SHIFT (16) /* 1588 timer reference clock period. */ |
| 10266 | +#define TCLK_PERIOD_MASK (0x3ff) |
| 10267 | +#define RTPE (1<<15) /* Record Tx Timestamp to PAL Enable. */ |
| 10268 | +#define FRD (1<<14) /* FIPER Realignment Disable */ |
| 10269 | +#define ESFDP (1<<11) /* External Tx/Rx SFD Polarity. */ |
| 10270 | +#define ESFDE (1<<10) /* External Tx/Rx SFD Enable. */ |
| 10271 | +#define ETEP2 (1<<9) /* External trigger 2 edge polarity */ |
| 10272 | +#define ETEP1 (1<<8) /* External trigger 1 edge polarity */ |
| 10273 | +#define COPH (1<<7) /* Generated clock output phase. */ |
| 10274 | +#define CIPH (1<<6) /* External oscillator input clock phase */ |
| 10275 | +#define TMSR (1<<5) /* Timer soft reset. */ |
| 10276 | +#define BYP (1<<3) /* Bypass drift compensated clock */ |
| 10277 | +#define TE (1<<2) /* 1588 timer enable. */ |
| 10278 | +#define CKSEL_SHIFT (0) /* 1588 Timer reference clock source */ |
| 10279 | +#define CKSEL_MASK (0x3) |
| 10280 | + |
| 10281 | +/* Bit definitions for the TMR_TEVENT register */ |
| 10282 | +#define ETS2 (1<<25) /* External trigger 2 timestamp sampled */ |
| 10283 | +#define ETS1 (1<<24) /* External trigger 1 timestamp sampled */ |
| 10284 | +#define ALM2 (1<<17) /* Current time = alarm time register 2 */ |
| 10285 | +#define ALM1 (1<<16) /* Current time = alarm time register 1 */ |
| 10286 | +#define PP1 (1<<7) /* periodic pulse generated on FIPER1 */ |
| 10287 | +#define PP2 (1<<6) /* periodic pulse generated on FIPER2 */ |
| 10288 | +#define PP3 (1<<5) /* periodic pulse generated on FIPER3 */ |
| 10289 | + |
| 10290 | +/* Bit definitions for the TMR_TEMASK register */ |
| 10291 | +#define ETS2EN (1<<25) /* External trigger 2 timestamp enable */ |
| 10292 | +#define ETS1EN (1<<24) /* External trigger 1 timestamp enable */ |
| 10293 | +#define ALM2EN (1<<17) /* Timer ALM2 event enable */ |
| 10294 | +#define ALM1EN (1<<16) /* Timer ALM1 event enable */ |
| 10295 | +#define PP1EN (1<<7) /* Periodic pulse event 1 enable */ |
| 10296 | +#define PP2EN (1<<6) /* Periodic pulse event 2 enable */ |
| 10297 | + |
| 10298 | +/* Bit definitions for the TMR_PEVENT register */ |
| 10299 | +#define TXP2 (1<<9) /* PTP transmitted timestamp im TXTS2 */ |
| 10300 | +#define TXP1 (1<<8) /* PTP transmitted timestamp in TXTS1 */ |
| 10301 | +#define RXP (1<<0) /* PTP frame has been received */ |
| 10302 | + |
| 10303 | +/* Bit definitions for the TMR_PEMASK register */ |
| 10304 | +#define TXP2EN (1<<9) /* Transmit PTP packet event 2 enable */ |
| 10305 | +#define TXP1EN (1<<8) /* Transmit PTP packet event 1 enable */ |
| 10306 | +#define RXPEN (1<<0) /* Receive PTP packet event enable */ |
| 10307 | + |
| 10308 | +/* Bit definitions for the TMR_STAT register */ |
| 10309 | +#define STAT_VEC_SHIFT (0) /* Timer general purpose status vector */ |
| 10310 | +#define STAT_VEC_MASK (0x3f) |
| 10311 | + |
| 10312 | +/* Bit definitions for the TMR_PRSC register */ |
| 10313 | +#define PRSC_OCK_SHIFT (0) /* Output clock division/prescale factor. */ |
| 10314 | +#define PRSC_OCK_MASK (0xffff) |
| 10315 | + |
| 10316 | + |
| 10317 | +#define N_EXT_TS 2 |
| 10318 | + |
| 10319 | +static void set_alarm(void) |
| 10320 | +{ |
| 10321 | + u64 ns; |
| 10322 | + |
| 10323 | + if (mac_dev->fm_rtc_get_cnt) |
| 10324 | + mac_dev->fm_rtc_get_cnt(mac_dev->fm_dev, &ns); |
| 10325 | + ns += 1500000000ULL; |
| 10326 | + ns = div_u64(ns, 1000000000UL) * 1000000000ULL; |
| 10327 | + ns -= DPA_PTP_NOMINAL_FREQ_PERIOD_NS; |
| 10328 | + if (mac_dev->fm_rtc_set_alarm) |
| 10329 | + mac_dev->fm_rtc_set_alarm(mac_dev->fm_dev, 0, ns); |
| 10330 | +} |
| 10331 | + |
| 10332 | +static void set_fipers(void) |
| 10333 | +{ |
| 10334 | + u64 fiper; |
| 10335 | + |
| 10336 | + if (mac_dev->fm_rtc_disable) |
| 10337 | + mac_dev->fm_rtc_disable(mac_dev->fm_dev); |
| 10338 | + |
| 10339 | + set_alarm(); |
| 10340 | + fiper = 1000000000ULL - DPA_PTP_NOMINAL_FREQ_PERIOD_NS; |
| 10341 | + if (mac_dev->fm_rtc_set_fiper) |
| 10342 | + mac_dev->fm_rtc_set_fiper(mac_dev->fm_dev, 0, fiper); |
| 10343 | + |
| 10344 | + if (mac_dev->fm_rtc_enable) |
| 10345 | + mac_dev->fm_rtc_enable(mac_dev->fm_dev); |
| 10346 | +} |
| 10347 | + |
| 10348 | +/* PTP clock operations */ |
| 10349 | + |
| 10350 | +static int ptp_dpa_adjfreq(struct ptp_clock_info *ptp, s32 ppb) |
| 10351 | +{ |
| 10352 | + u64 adj; |
| 10353 | + u32 diff, tmr_add; |
| 10354 | + int neg_adj = 0; |
| 10355 | + |
| 10356 | + if (ppb < 0) { |
| 10357 | + neg_adj = 1; |
| 10358 | + ppb = -ppb; |
| 10359 | + } |
| 10360 | + |
| 10361 | + tmr_add = freqCompensation; |
| 10362 | + adj = tmr_add; |
| 10363 | + adj *= ppb; |
| 10364 | + diff = div_u64(adj, 1000000000ULL); |
| 10365 | + |
| 10366 | + tmr_add = neg_adj ? tmr_add - diff : tmr_add + diff; |
| 10367 | + |
| 10368 | + if (mac_dev->fm_rtc_set_drift) |
| 10369 | + mac_dev->fm_rtc_set_drift(mac_dev->fm_dev, tmr_add); |
| 10370 | + |
| 10371 | + return 0; |
| 10372 | +} |
| 10373 | + |
| 10374 | +static int ptp_dpa_adjtime(struct ptp_clock_info *ptp, s64 delta) |
| 10375 | +{ |
| 10376 | + s64 now; |
| 10377 | + |
| 10378 | + if (mac_dev->fm_rtc_get_cnt) |
| 10379 | + mac_dev->fm_rtc_get_cnt(mac_dev->fm_dev, &now); |
| 10380 | + |
| 10381 | + now += delta; |
| 10382 | + |
| 10383 | + if (mac_dev->fm_rtc_set_cnt) |
| 10384 | + mac_dev->fm_rtc_set_cnt(mac_dev->fm_dev, now); |
| 10385 | + set_fipers(); |
| 10386 | + |
| 10387 | + return 0; |
| 10388 | +} |
| 10389 | + |
| 10390 | +static int ptp_dpa_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) |
| 10391 | +{ |
| 10392 | + u64 ns; |
| 10393 | + u32 remainder; |
| 10394 | + |
| 10395 | + if (mac_dev->fm_rtc_get_cnt) |
| 10396 | + mac_dev->fm_rtc_get_cnt(mac_dev->fm_dev, &ns); |
| 10397 | + |
| 10398 | + ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder); |
| 10399 | + ts->tv_nsec = remainder; |
| 10400 | + return 0; |
| 10401 | +} |
| 10402 | + |
| 10403 | +static int ptp_dpa_settime(struct ptp_clock_info *ptp, |
| 10404 | + const struct timespec64 *ts) |
| 10405 | +{ |
| 10406 | + u64 ns; |
| 10407 | + |
| 10408 | + ns = ts->tv_sec * 1000000000ULL; |
| 10409 | + ns += ts->tv_nsec; |
| 10410 | + |
| 10411 | + if (mac_dev->fm_rtc_set_cnt) |
| 10412 | + mac_dev->fm_rtc_set_cnt(mac_dev->fm_dev, ns); |
| 10413 | + set_fipers(); |
| 10414 | + return 0; |
| 10415 | +} |
| 10416 | + |
| 10417 | +static int ptp_dpa_enable(struct ptp_clock_info *ptp, |
| 10418 | + struct ptp_clock_request *rq, int on) |
| 10419 | +{ |
| 10420 | + u32 bit; |
| 10421 | + |
| 10422 | + switch (rq->type) { |
| 10423 | + case PTP_CLK_REQ_EXTTS: |
| 10424 | + switch (rq->extts.index) { |
| 10425 | + case 0: |
| 10426 | + bit = ETS1EN; |
| 10427 | + break; |
| 10428 | + case 1: |
| 10429 | + bit = ETS2EN; |
| 10430 | + break; |
| 10431 | + default: |
| 10432 | + return -EINVAL; |
| 10433 | + } |
| 10434 | + if (on) { |
| 10435 | + if (mac_dev->fm_rtc_enable_interrupt) |
| 10436 | + mac_dev->fm_rtc_enable_interrupt( |
| 10437 | + mac_dev->fm_dev, bit); |
| 10438 | + } else { |
| 10439 | + if (mac_dev->fm_rtc_disable_interrupt) |
| 10440 | + mac_dev->fm_rtc_disable_interrupt( |
| 10441 | + mac_dev->fm_dev, bit); |
| 10442 | + } |
| 10443 | + return 0; |
| 10444 | + |
| 10445 | + case PTP_CLK_REQ_PPS: |
| 10446 | + if (on) { |
| 10447 | + if (mac_dev->fm_rtc_enable_interrupt) |
| 10448 | + mac_dev->fm_rtc_enable_interrupt( |
| 10449 | + mac_dev->fm_dev, PP1EN); |
| 10450 | + } else { |
| 10451 | + if (mac_dev->fm_rtc_disable_interrupt) |
| 10452 | + mac_dev->fm_rtc_disable_interrupt( |
| 10453 | + mac_dev->fm_dev, PP1EN); |
| 10454 | + } |
| 10455 | + return 0; |
| 10456 | + |
| 10457 | + default: |
| 10458 | + break; |
| 10459 | + } |
| 10460 | + |
| 10461 | + return -EOPNOTSUPP; |
| 10462 | +} |
| 10463 | + |
| 10464 | +static struct ptp_clock_info ptp_dpa_caps = { |
| 10465 | + .owner = THIS_MODULE, |
| 10466 | + .name = "dpaa clock", |
| 10467 | + .max_adj = 512000, |
| 10468 | + .n_alarm = 0, |
| 10469 | + .n_ext_ts = N_EXT_TS, |
| 10470 | + .n_per_out = 0, |
| 10471 | + .pps = 1, |
| 10472 | + .adjfreq = ptp_dpa_adjfreq, |
| 10473 | + .adjtime = ptp_dpa_adjtime, |
| 10474 | + .gettime64 = ptp_dpa_gettime, |
| 10475 | + .settime64 = ptp_dpa_settime, |
| 10476 | + .enable = ptp_dpa_enable, |
| 10477 | +}; |
| 10478 | + |
| 10479 | +static int __init __cold dpa_ptp_load(void) |
| 10480 | +{ |
| 10481 | + struct device *ptp_dev; |
| 10482 | + struct timespec64 now; |
| 10483 | + int dpa_phc_index; |
| 10484 | + int err; |
| 10485 | + |
| 10486 | + if (!(ptp_priv.of_dev && ptp_priv.mac_dev)) |
| 10487 | + return -ENODEV; |
| 10488 | + |
| 10489 | + ptp_dev = &ptp_priv.of_dev->dev; |
| 10490 | + mac_dev = ptp_priv.mac_dev; |
| 10491 | + |
| 10492 | + if (mac_dev->fm_rtc_get_drift) |
| 10493 | + mac_dev->fm_rtc_get_drift(mac_dev->fm_dev, &freqCompensation); |
| 10494 | + |
| 10495 | + getnstimeofday64(&now); |
| 10496 | + ptp_dpa_settime(&ptp_dpa_caps, &now); |
| 10497 | + |
| 10498 | + clock = ptp_clock_register(&ptp_dpa_caps, ptp_dev); |
| 10499 | + if (IS_ERR(clock)) { |
| 10500 | + err = PTR_ERR(clock); |
| 10501 | + return err; |
| 10502 | + } |
| 10503 | + dpa_phc_index = ptp_clock_index(clock); |
| 10504 | + return 0; |
| 10505 | +} |
| 10506 | +module_init(dpa_ptp_load); |
| 10507 | + |
| 10508 | +static void __exit __cold dpa_ptp_unload(void) |
| 10509 | +{ |
| 10510 | + if (mac_dev->fm_rtc_disable_interrupt) |
| 10511 | + mac_dev->fm_rtc_disable_interrupt(mac_dev->fm_dev, 0xffffffff); |
| 10512 | + ptp_clock_unregister(clock); |
| 10513 | +} |
| 10514 | +module_exit(dpa_ptp_unload); |
| 10515 | --- /dev/null |
| 10516 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/mac-api.c |
| 10517 | @@ -0,0 +1,909 @@ |
| 10518 | +/* Copyright 2008-2012 Freescale Semiconductor, Inc. |
| 10519 | + * |
| 10520 | + * Redistribution and use in source and binary forms, with or without |
| 10521 | + * modification, are permitted provided that the following conditions are met: |
| 10522 | + * * Redistributions of source code must retain the above copyright |
| 10523 | + * notice, this list of conditions and the following disclaimer. |
| 10524 | + * * Redistributions in binary form must reproduce the above copyright |
| 10525 | + * notice, this list of conditions and the following disclaimer in the |
| 10526 | + * documentation and/or other materials provided with the distribution. |
| 10527 | + * * Neither the name of Freescale Semiconductor nor the |
| 10528 | + * names of its contributors may be used to endorse or promote products |
| 10529 | + * derived from this software without specific prior written permission. |
| 10530 | + * |
| 10531 | + * |
| 10532 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 10533 | + * GNU General Public License ("GPL") as published by the Free Software |
| 10534 | + * Foundation, either version 2 of that License or (at your option) any |
| 10535 | + * later version. |
| 10536 | + * |
| 10537 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 10538 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 10539 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 10540 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 10541 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 10542 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 10543 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 10544 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 10545 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 10546 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 10547 | + */ |
| 10548 | + |
| 10549 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 10550 | +#define pr_fmt(fmt) \ |
| 10551 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 10552 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 10553 | +#else |
| 10554 | +#define pr_fmt(fmt) \ |
| 10555 | + KBUILD_MODNAME ": " fmt |
| 10556 | +#endif |
| 10557 | + |
| 10558 | +#include <linux/init.h> |
| 10559 | +#include <linux/module.h> |
| 10560 | +#include <linux/io.h> |
| 10561 | +#include <linux/of_platform.h> |
| 10562 | +#include <linux/of_mdio.h> |
| 10563 | +#include <linux/phy.h> |
| 10564 | +#include <linux/netdevice.h> |
| 10565 | + |
| 10566 | +#include "dpaa_eth.h" |
| 10567 | +#include "mac.h" |
| 10568 | +#include "lnxwrp_fsl_fman.h" |
| 10569 | + |
| 10570 | +#include "error_ext.h" /* GET_ERROR_TYPE, E_OK */ |
| 10571 | + |
| 10572 | +#include "fsl_fman_dtsec.h" |
| 10573 | +#include "fsl_fman_tgec.h" |
| 10574 | +#include "fsl_fman_memac.h" |
| 10575 | +#include "../sdk_fman/src/wrapper/lnxwrp_sysfs_fm.h" |
| 10576 | + |
| 10577 | +#define MAC_DESCRIPTION "FSL FMan MAC API based driver" |
| 10578 | + |
| 10579 | +MODULE_LICENSE("Dual BSD/GPL"); |
| 10580 | + |
| 10581 | +MODULE_AUTHOR("Emil Medve <Emilian.Medve@Freescale.com>"); |
| 10582 | + |
| 10583 | +MODULE_DESCRIPTION(MAC_DESCRIPTION); |
| 10584 | + |
| 10585 | +struct mac_priv_s { |
| 10586 | + struct fm_mac_dev *fm_mac; |
| 10587 | +}; |
| 10588 | + |
| 10589 | +const char *mac_driver_description __initconst = MAC_DESCRIPTION; |
| 10590 | +const size_t mac_sizeof_priv[] = { |
| 10591 | + [DTSEC] = sizeof(struct mac_priv_s), |
| 10592 | + [XGMAC] = sizeof(struct mac_priv_s), |
| 10593 | + [MEMAC] = sizeof(struct mac_priv_s) |
| 10594 | +}; |
| 10595 | + |
| 10596 | +static const enet_mode_t _100[] = { |
| 10597 | + [PHY_INTERFACE_MODE_MII] = e_ENET_MODE_MII_100, |
| 10598 | + [PHY_INTERFACE_MODE_RMII] = e_ENET_MODE_RMII_100 |
| 10599 | +}; |
| 10600 | + |
| 10601 | +static const enet_mode_t _1000[] = { |
| 10602 | + [PHY_INTERFACE_MODE_GMII] = e_ENET_MODE_GMII_1000, |
| 10603 | + [PHY_INTERFACE_MODE_SGMII] = e_ENET_MODE_SGMII_1000, |
| 10604 | + [PHY_INTERFACE_MODE_QSGMII] = e_ENET_MODE_QSGMII_1000, |
| 10605 | + [PHY_INTERFACE_MODE_TBI] = e_ENET_MODE_TBI_1000, |
| 10606 | + [PHY_INTERFACE_MODE_RGMII] = e_ENET_MODE_RGMII_1000, |
| 10607 | + [PHY_INTERFACE_MODE_RGMII_ID] = e_ENET_MODE_RGMII_1000, |
| 10608 | + [PHY_INTERFACE_MODE_RGMII_RXID] = e_ENET_MODE_RGMII_1000, |
| 10609 | + [PHY_INTERFACE_MODE_RGMII_TXID] = e_ENET_MODE_RGMII_1000, |
| 10610 | + [PHY_INTERFACE_MODE_RTBI] = e_ENET_MODE_RTBI_1000 |
| 10611 | +}; |
| 10612 | + |
| 10613 | +static enet_mode_t __cold __attribute__((nonnull)) |
| 10614 | +macdev2enetinterface(const struct mac_device *mac_dev) |
| 10615 | +{ |
| 10616 | + switch (mac_dev->max_speed) { |
| 10617 | + case SPEED_100: |
| 10618 | + return _100[mac_dev->phy_if]; |
| 10619 | + case SPEED_1000: |
| 10620 | + return _1000[mac_dev->phy_if]; |
| 10621 | + case SPEED_2500: |
| 10622 | + return e_ENET_MODE_SGMII_2500; |
| 10623 | + case SPEED_10000: |
| 10624 | + return e_ENET_MODE_XGMII_10000; |
| 10625 | + default: |
| 10626 | + return e_ENET_MODE_MII_100; |
| 10627 | + } |
| 10628 | +} |
| 10629 | + |
| 10630 | +static void mac_exception(handle_t _mac_dev, e_FmMacExceptions exception) |
| 10631 | +{ |
| 10632 | + struct mac_device *mac_dev; |
| 10633 | + |
| 10634 | + mac_dev = (struct mac_device *)_mac_dev; |
| 10635 | + |
| 10636 | + if (e_FM_MAC_EX_10G_RX_FIFO_OVFL == exception) { |
| 10637 | + /* don't flag RX FIFO after the first */ |
| 10638 | + fm_mac_set_exception(mac_dev->get_mac_handle(mac_dev), |
| 10639 | + e_FM_MAC_EX_10G_RX_FIFO_OVFL, false); |
| 10640 | + dev_err(mac_dev->dev, "10G MAC got RX FIFO Error = %x\n", |
| 10641 | + exception); |
| 10642 | + } |
| 10643 | + |
| 10644 | + dev_dbg(mac_dev->dev, "%s:%s() -> %d\n", KBUILD_BASENAME".c", __func__, |
| 10645 | + exception); |
| 10646 | +} |
| 10647 | + |
| 10648 | +static int __cold init(struct mac_device *mac_dev) |
| 10649 | +{ |
| 10650 | + int _errno; |
| 10651 | + struct mac_priv_s *priv; |
| 10652 | + t_FmMacParams param; |
| 10653 | + uint32_t version; |
| 10654 | + |
| 10655 | + priv = macdev_priv(mac_dev); |
| 10656 | + |
| 10657 | + param.baseAddr = (typeof(param.baseAddr))(uintptr_t)devm_ioremap( |
| 10658 | + mac_dev->dev, mac_dev->res->start, 0x2000); |
| 10659 | + param.enetMode = macdev2enetinterface(mac_dev); |
| 10660 | + memcpy(¶m.addr, mac_dev->addr, min(sizeof(param.addr), |
| 10661 | + sizeof(mac_dev->addr))); |
| 10662 | + param.macId = mac_dev->cell_index; |
| 10663 | + param.h_Fm = (handle_t)mac_dev->fm; |
| 10664 | + param.mdioIrq = NO_IRQ; |
| 10665 | + param.f_Exception = mac_exception; |
| 10666 | + param.f_Event = mac_exception; |
| 10667 | + param.h_App = mac_dev; |
| 10668 | + |
| 10669 | + priv->fm_mac = fm_mac_config(¶m); |
| 10670 | + if (unlikely(priv->fm_mac == NULL)) { |
| 10671 | + _errno = -EINVAL; |
| 10672 | + goto _return; |
| 10673 | + } |
| 10674 | + |
| 10675 | + fm_mac_set_handle(mac_dev->fm_dev, priv->fm_mac, |
| 10676 | + (macdev2enetinterface(mac_dev) != e_ENET_MODE_XGMII_10000) ? |
| 10677 | + param.macId : param.macId + FM_MAX_NUM_OF_1G_MACS); |
| 10678 | + |
| 10679 | + _errno = fm_mac_config_max_frame_length(priv->fm_mac, |
| 10680 | + fm_get_max_frm()); |
| 10681 | + if (unlikely(_errno < 0)) |
| 10682 | + goto _return_fm_mac_free; |
| 10683 | + |
| 10684 | + if (macdev2enetinterface(mac_dev) != e_ENET_MODE_XGMII_10000) { |
| 10685 | + /* 10G always works with pad and CRC */ |
| 10686 | + _errno = fm_mac_config_pad_and_crc(priv->fm_mac, true); |
| 10687 | + if (unlikely(_errno < 0)) |
| 10688 | + goto _return_fm_mac_free; |
| 10689 | + |
| 10690 | + _errno = fm_mac_config_half_duplex(priv->fm_mac, |
| 10691 | + mac_dev->half_duplex); |
| 10692 | + if (unlikely(_errno < 0)) |
| 10693 | + goto _return_fm_mac_free; |
| 10694 | + } else { |
| 10695 | + _errno = fm_mac_config_reset_on_init(priv->fm_mac, true); |
| 10696 | + if (unlikely(_errno < 0)) |
| 10697 | + goto _return_fm_mac_free; |
| 10698 | + } |
| 10699 | + |
| 10700 | + _errno = fm_mac_init(priv->fm_mac); |
| 10701 | + if (unlikely(_errno < 0)) |
| 10702 | + goto _return_fm_mac_free; |
| 10703 | + |
| 10704 | +#ifndef CONFIG_FMAN_MIB_CNT_OVF_IRQ_EN |
| 10705 | + /* For 1G MAC, disable by default the MIB counters overflow interrupt */ |
| 10706 | + if (macdev2enetinterface(mac_dev) != e_ENET_MODE_XGMII_10000) { |
| 10707 | + _errno = fm_mac_set_exception(mac_dev->get_mac_handle(mac_dev), |
| 10708 | + e_FM_MAC_EX_1G_RX_MIB_CNT_OVFL, FALSE); |
| 10709 | + if (unlikely(_errno < 0)) |
| 10710 | + goto _return_fm_mac_free; |
| 10711 | + } |
| 10712 | +#endif /* !CONFIG_FMAN_MIB_CNT_OVF_IRQ_EN */ |
| 10713 | + |
| 10714 | + /* For 10G MAC, disable Tx ECC exception */ |
| 10715 | + if (macdev2enetinterface(mac_dev) == e_ENET_MODE_XGMII_10000) { |
| 10716 | + _errno = fm_mac_set_exception(mac_dev->get_mac_handle(mac_dev), |
| 10717 | + e_FM_MAC_EX_10G_1TX_ECC_ER, FALSE); |
| 10718 | + if (unlikely(_errno < 0)) |
| 10719 | + goto _return_fm_mac_free; |
| 10720 | + } |
| 10721 | + |
| 10722 | + _errno = fm_mac_get_version(priv->fm_mac, &version); |
| 10723 | + if (unlikely(_errno < 0)) |
| 10724 | + goto _return_fm_mac_free; |
| 10725 | + |
| 10726 | + dev_info(mac_dev->dev, "FMan %s version: 0x%08x\n", |
| 10727 | + ((macdev2enetinterface(mac_dev) != e_ENET_MODE_XGMII_10000) ? |
| 10728 | + "dTSEC" : "XGEC"), version); |
| 10729 | + |
| 10730 | + goto _return; |
| 10731 | + |
| 10732 | + |
| 10733 | +_return_fm_mac_free: |
| 10734 | + fm_mac_free(mac_dev->get_mac_handle(mac_dev)); |
| 10735 | + |
| 10736 | +_return: |
| 10737 | + return _errno; |
| 10738 | +} |
| 10739 | + |
| 10740 | +static int __cold memac_init(struct mac_device *mac_dev) |
| 10741 | +{ |
| 10742 | + int _errno; |
| 10743 | + struct mac_priv_s *priv; |
| 10744 | + t_FmMacParams param; |
| 10745 | + |
| 10746 | + priv = macdev_priv(mac_dev); |
| 10747 | + |
| 10748 | + param.baseAddr = (typeof(param.baseAddr))(uintptr_t)devm_ioremap( |
| 10749 | + mac_dev->dev, mac_dev->res->start, 0x2000); |
| 10750 | + param.enetMode = macdev2enetinterface(mac_dev); |
| 10751 | + memcpy(¶m.addr, mac_dev->addr, sizeof(mac_dev->addr)); |
| 10752 | + param.macId = mac_dev->cell_index; |
| 10753 | + param.h_Fm = (handle_t)mac_dev->fm; |
| 10754 | + param.mdioIrq = NO_IRQ; |
| 10755 | + param.f_Exception = mac_exception; |
| 10756 | + param.f_Event = mac_exception; |
| 10757 | + param.h_App = mac_dev; |
| 10758 | + |
| 10759 | + priv->fm_mac = fm_mac_config(¶m); |
| 10760 | + if (unlikely(priv->fm_mac == NULL)) { |
| 10761 | + _errno = -EINVAL; |
| 10762 | + goto _return; |
| 10763 | + } |
| 10764 | + |
| 10765 | + fm_mac_set_handle(mac_dev->fm_dev, priv->fm_mac, |
| 10766 | + (macdev2enetinterface(mac_dev) != e_ENET_MODE_XGMII_10000) ? |
| 10767 | + param.macId : param.macId + FM_MAX_NUM_OF_1G_MACS); |
| 10768 | + |
| 10769 | + _errno = fm_mac_config_max_frame_length(priv->fm_mac, fm_get_max_frm()); |
| 10770 | + if (unlikely(_errno < 0)) |
| 10771 | + goto _return_fm_mac_free; |
| 10772 | + |
| 10773 | + _errno = fm_mac_config_reset_on_init(priv->fm_mac, true); |
| 10774 | + if (unlikely(_errno < 0)) |
| 10775 | + goto _return_fm_mac_free; |
| 10776 | + |
| 10777 | + _errno = fm_mac_init(priv->fm_mac); |
| 10778 | + if (unlikely(_errno < 0)) |
| 10779 | + goto _return_fm_mac_free; |
| 10780 | + |
| 10781 | + dev_info(mac_dev->dev, "FMan MEMAC\n"); |
| 10782 | + |
| 10783 | + goto _return; |
| 10784 | + |
| 10785 | +_return_fm_mac_free: |
| 10786 | + fm_mac_free(priv->fm_mac); |
| 10787 | + |
| 10788 | +_return: |
| 10789 | + return _errno; |
| 10790 | +} |
| 10791 | + |
| 10792 | +static int __cold start(struct mac_device *mac_dev) |
| 10793 | +{ |
| 10794 | + int _errno; |
| 10795 | + struct phy_device *phy_dev = mac_dev->phy_dev; |
| 10796 | + |
| 10797 | + _errno = fm_mac_enable(mac_dev->get_mac_handle(mac_dev)); |
| 10798 | + |
| 10799 | + if (!_errno && phy_dev) |
| 10800 | + phy_start(phy_dev); |
| 10801 | + |
| 10802 | + return _errno; |
| 10803 | +} |
| 10804 | + |
| 10805 | +static int __cold stop(struct mac_device *mac_dev) |
| 10806 | +{ |
| 10807 | + if (mac_dev->phy_dev) |
| 10808 | + phy_stop(mac_dev->phy_dev); |
| 10809 | + |
| 10810 | + return fm_mac_disable(mac_dev->get_mac_handle(mac_dev)); |
| 10811 | +} |
| 10812 | + |
| 10813 | +static int __cold set_multi(struct net_device *net_dev, |
| 10814 | + struct mac_device *mac_dev) |
| 10815 | +{ |
| 10816 | + struct mac_priv_s *mac_priv; |
| 10817 | + struct mac_address *old_addr, *tmp; |
| 10818 | + struct netdev_hw_addr *ha; |
| 10819 | + int _errno; |
| 10820 | + |
| 10821 | + mac_priv = macdev_priv(mac_dev); |
| 10822 | + |
| 10823 | + /* Clear previous address list */ |
| 10824 | + list_for_each_entry_safe(old_addr, tmp, &mac_dev->mc_addr_list, list) { |
| 10825 | + _errno = fm_mac_remove_hash_mac_addr(mac_priv->fm_mac, |
| 10826 | + (t_EnetAddr *)old_addr->addr); |
| 10827 | + if (_errno < 0) |
| 10828 | + return _errno; |
| 10829 | + |
| 10830 | + list_del(&old_addr->list); |
| 10831 | + kfree(old_addr); |
| 10832 | + } |
| 10833 | + |
| 10834 | + /* Add all the addresses from the new list */ |
| 10835 | + netdev_for_each_mc_addr(ha, net_dev) { |
| 10836 | + _errno = fm_mac_add_hash_mac_addr(mac_priv->fm_mac, |
| 10837 | + (t_EnetAddr *)ha->addr); |
| 10838 | + if (_errno < 0) |
| 10839 | + return _errno; |
| 10840 | + |
| 10841 | + tmp = kmalloc(sizeof(struct mac_address), GFP_ATOMIC); |
| 10842 | + if (!tmp) { |
| 10843 | + dev_err(mac_dev->dev, "Out of memory\n"); |
| 10844 | + return -ENOMEM; |
| 10845 | + } |
| 10846 | + memcpy(tmp->addr, ha->addr, ETH_ALEN); |
| 10847 | + list_add(&tmp->list, &mac_dev->mc_addr_list); |
| 10848 | + } |
| 10849 | + return 0; |
| 10850 | +} |
| 10851 | + |
| 10852 | +/* Avoid redundant calls to FMD, if the MAC driver already contains the desired |
| 10853 | + * active PAUSE settings. Otherwise, the new active settings should be reflected |
| 10854 | + * in FMan. |
| 10855 | + */ |
| 10856 | +int set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx) |
| 10857 | +{ |
| 10858 | + struct fm_mac_dev *fm_mac_dev = mac_dev->get_mac_handle(mac_dev); |
| 10859 | + int _errno = 0; |
| 10860 | + |
| 10861 | + if (unlikely(rx != mac_dev->rx_pause_active)) { |
| 10862 | + _errno = fm_mac_set_rx_pause_frames(fm_mac_dev, rx); |
| 10863 | + if (likely(_errno == 0)) |
| 10864 | + mac_dev->rx_pause_active = rx; |
| 10865 | + } |
| 10866 | + |
| 10867 | + if (unlikely(tx != mac_dev->tx_pause_active)) { |
| 10868 | + _errno = fm_mac_set_tx_pause_frames(fm_mac_dev, tx); |
| 10869 | + if (likely(_errno == 0)) |
| 10870 | + mac_dev->tx_pause_active = tx; |
| 10871 | + } |
| 10872 | + |
| 10873 | + return _errno; |
| 10874 | +} |
| 10875 | +EXPORT_SYMBOL(set_mac_active_pause); |
| 10876 | + |
| 10877 | +/* Determine the MAC RX/TX PAUSE frames settings based on PHY |
| 10878 | + * autonegotiation or values set by eththool. |
| 10879 | + */ |
| 10880 | +void get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause, bool *tx_pause) |
| 10881 | +{ |
| 10882 | + struct phy_device *phy_dev = mac_dev->phy_dev; |
| 10883 | + u16 lcl_adv, rmt_adv; |
| 10884 | + u8 flowctrl; |
| 10885 | + |
| 10886 | + *rx_pause = *tx_pause = false; |
| 10887 | + |
| 10888 | + if (!phy_dev->duplex) |
| 10889 | + return; |
| 10890 | + |
| 10891 | + /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings |
| 10892 | + * are those set by ethtool. |
| 10893 | + */ |
| 10894 | + if (!mac_dev->autoneg_pause) { |
| 10895 | + *rx_pause = mac_dev->rx_pause_req; |
| 10896 | + *tx_pause = mac_dev->tx_pause_req; |
| 10897 | + return; |
| 10898 | + } |
| 10899 | + |
| 10900 | + /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE |
| 10901 | + * settings depend on the result of the link negotiation. |
| 10902 | + */ |
| 10903 | + |
| 10904 | + /* get local capabilities */ |
| 10905 | + lcl_adv = 0; |
| 10906 | + if (phy_dev->advertising & ADVERTISED_Pause) |
| 10907 | + lcl_adv |= ADVERTISE_PAUSE_CAP; |
| 10908 | + if (phy_dev->advertising & ADVERTISED_Asym_Pause) |
| 10909 | + lcl_adv |= ADVERTISE_PAUSE_ASYM; |
| 10910 | + |
| 10911 | + /* get link partner capabilities */ |
| 10912 | + rmt_adv = 0; |
| 10913 | + if (phy_dev->pause) |
| 10914 | + rmt_adv |= LPA_PAUSE_CAP; |
| 10915 | + if (phy_dev->asym_pause) |
| 10916 | + rmt_adv |= LPA_PAUSE_ASYM; |
| 10917 | + |
| 10918 | + /* Calculate TX/RX settings based on local and peer advertised |
| 10919 | + * symmetric/asymmetric PAUSE capabilities. |
| 10920 | + */ |
| 10921 | + flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); |
| 10922 | + if (flowctrl & FLOW_CTRL_RX) |
| 10923 | + *rx_pause = true; |
| 10924 | + if (flowctrl & FLOW_CTRL_TX) |
| 10925 | + *tx_pause = true; |
| 10926 | +} |
| 10927 | +EXPORT_SYMBOL(get_pause_cfg); |
| 10928 | + |
| 10929 | +static void adjust_link_void(struct net_device *net_dev) |
| 10930 | +{ |
| 10931 | +} |
| 10932 | + |
| 10933 | +static void adjust_link(struct net_device *net_dev) |
| 10934 | +{ |
| 10935 | + struct dpa_priv_s *priv = netdev_priv(net_dev); |
| 10936 | + struct mac_device *mac_dev = priv->mac_dev; |
| 10937 | + struct phy_device *phy_dev = mac_dev->phy_dev; |
| 10938 | + struct fm_mac_dev *fm_mac_dev; |
| 10939 | + bool rx_pause, tx_pause; |
| 10940 | + int _errno; |
| 10941 | + |
| 10942 | + fm_mac_dev = mac_dev->get_mac_handle(mac_dev); |
| 10943 | + fm_mac_adjust_link(fm_mac_dev, phy_dev->link, phy_dev->speed, |
| 10944 | + phy_dev->duplex); |
| 10945 | + |
| 10946 | + get_pause_cfg(mac_dev, &rx_pause, &tx_pause); |
| 10947 | + _errno = set_mac_active_pause(mac_dev, rx_pause, tx_pause); |
| 10948 | + if (unlikely(_errno < 0)) |
| 10949 | + netdev_err(net_dev, "set_mac_active_pause() = %d\n", _errno); |
| 10950 | +} |
| 10951 | + |
| 10952 | +/* Initializes driver's PHY state, and attaches to the PHY. |
| 10953 | + * Returns 0 on success. |
| 10954 | + */ |
| 10955 | +static int dtsec_init_phy(struct net_device *net_dev, |
| 10956 | + struct mac_device *mac_dev) |
| 10957 | +{ |
| 10958 | + struct phy_device *phy_dev; |
| 10959 | + |
| 10960 | + if (of_phy_is_fixed_link(mac_dev->phy_node)) |
| 10961 | + phy_dev = of_phy_attach(net_dev, mac_dev->phy_node, |
| 10962 | + 0, mac_dev->phy_if); |
| 10963 | + else |
| 10964 | + phy_dev = of_phy_connect(net_dev, mac_dev->phy_node, |
| 10965 | + &adjust_link, 0, mac_dev->phy_if); |
| 10966 | + if (unlikely(phy_dev == NULL) || IS_ERR(phy_dev)) { |
| 10967 | + netdev_err(net_dev, "Could not connect to PHY %s\n", |
| 10968 | + mac_dev->phy_node ? |
| 10969 | + mac_dev->phy_node->full_name : |
| 10970 | + mac_dev->fixed_bus_id); |
| 10971 | + return phy_dev == NULL ? -ENODEV : PTR_ERR(phy_dev); |
| 10972 | + } |
| 10973 | + |
| 10974 | + /* Remove any features not supported by the controller */ |
| 10975 | + phy_dev->supported &= mac_dev->if_support; |
| 10976 | + /* Enable the symmetric and asymmetric PAUSE frame advertisements, |
| 10977 | + * as most of the PHY drivers do not enable them by default. |
| 10978 | + */ |
| 10979 | + phy_dev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); |
| 10980 | + phy_dev->advertising = phy_dev->supported; |
| 10981 | + |
| 10982 | + mac_dev->phy_dev = phy_dev; |
| 10983 | + |
| 10984 | + return 0; |
| 10985 | +} |
| 10986 | + |
| 10987 | +static int xgmac_init_phy(struct net_device *net_dev, |
| 10988 | + struct mac_device *mac_dev) |
| 10989 | +{ |
| 10990 | + struct phy_device *phy_dev; |
| 10991 | + |
| 10992 | + if (of_phy_is_fixed_link(mac_dev->phy_node)) |
| 10993 | + phy_dev = of_phy_attach(net_dev, mac_dev->phy_node, |
| 10994 | + 0, mac_dev->phy_if); |
| 10995 | + else |
| 10996 | + phy_dev = of_phy_connect(net_dev, mac_dev->phy_node, |
| 10997 | + &adjust_link_void, 0, mac_dev->phy_if); |
| 10998 | + if (unlikely(phy_dev == NULL) || IS_ERR(phy_dev)) { |
| 10999 | + netdev_err(net_dev, "Could not attach to PHY %s\n", |
| 11000 | + mac_dev->phy_node ? |
| 11001 | + mac_dev->phy_node->full_name : |
| 11002 | + mac_dev->fixed_bus_id); |
| 11003 | + return phy_dev == NULL ? -ENODEV : PTR_ERR(phy_dev); |
| 11004 | + } |
| 11005 | + |
| 11006 | + phy_dev->supported &= mac_dev->if_support; |
| 11007 | + /* Enable the symmetric and asymmetric PAUSE frame advertisements, |
| 11008 | + * as most of the PHY drivers do not enable them by default. |
| 11009 | + */ |
| 11010 | + phy_dev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); |
| 11011 | + phy_dev->advertising = phy_dev->supported; |
| 11012 | + |
| 11013 | + mac_dev->phy_dev = phy_dev; |
| 11014 | + |
| 11015 | + return 0; |
| 11016 | +} |
| 11017 | + |
| 11018 | +static int memac_init_phy(struct net_device *net_dev, |
| 11019 | + struct mac_device *mac_dev) |
| 11020 | +{ |
| 11021 | + struct phy_device *phy_dev; |
| 11022 | + |
| 11023 | + if (of_phy_is_fixed_link(mac_dev->phy_node)) { |
| 11024 | + phy_dev = of_phy_attach(net_dev, mac_dev->phy_node, |
| 11025 | + 0, mac_dev->phy_if); |
| 11026 | + } else if ((macdev2enetinterface(mac_dev) == e_ENET_MODE_XGMII_10000) || |
| 11027 | + (macdev2enetinterface(mac_dev) == e_ENET_MODE_SGMII_2500)) { |
| 11028 | + phy_dev = of_phy_connect(net_dev, mac_dev->phy_node, |
| 11029 | + &adjust_link_void, 0, |
| 11030 | + mac_dev->phy_if); |
| 11031 | + } else { |
| 11032 | + phy_dev = of_phy_connect(net_dev, mac_dev->phy_node, |
| 11033 | + &adjust_link, 0, mac_dev->phy_if); |
| 11034 | + } |
| 11035 | + |
| 11036 | + if (unlikely(phy_dev == NULL) || IS_ERR(phy_dev)) { |
| 11037 | + netdev_err(net_dev, "Could not connect to PHY %s\n", |
| 11038 | + mac_dev->phy_node ? |
| 11039 | + mac_dev->phy_node->full_name : |
| 11040 | + mac_dev->fixed_bus_id); |
| 11041 | + return phy_dev == NULL ? -ENODEV : PTR_ERR(phy_dev); |
| 11042 | + } |
| 11043 | + |
| 11044 | + /* Remove any features not supported by the controller */ |
| 11045 | + phy_dev->supported &= mac_dev->if_support; |
| 11046 | + /* Enable the symmetric and asymmetric PAUSE frame advertisements, |
| 11047 | + * as most of the PHY drivers do not enable them by default. |
| 11048 | + */ |
| 11049 | + phy_dev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); |
| 11050 | + phy_dev->advertising = phy_dev->supported; |
| 11051 | + |
| 11052 | + mac_dev->phy_dev = phy_dev; |
| 11053 | + |
| 11054 | + return 0; |
| 11055 | +} |
| 11056 | + |
| 11057 | +static int __cold uninit(struct fm_mac_dev *fm_mac_dev) |
| 11058 | +{ |
| 11059 | + int _errno, __errno; |
| 11060 | + |
| 11061 | + _errno = fm_mac_disable(fm_mac_dev); |
| 11062 | + __errno = fm_mac_free(fm_mac_dev); |
| 11063 | + |
| 11064 | + if (unlikely(__errno < 0)) |
| 11065 | + _errno = __errno; |
| 11066 | + |
| 11067 | + return _errno; |
| 11068 | +} |
| 11069 | + |
| 11070 | +static struct fm_mac_dev *get_mac_handle(struct mac_device *mac_dev) |
| 11071 | +{ |
| 11072 | + const struct mac_priv_s *priv; |
| 11073 | + priv = macdev_priv(mac_dev); |
| 11074 | + return priv->fm_mac; |
| 11075 | +} |
| 11076 | + |
| 11077 | +static int dtsec_dump_regs(struct mac_device *h_mac, char *buf, int nn) |
| 11078 | +{ |
| 11079 | + struct dtsec_regs *p_mm = (struct dtsec_regs *) h_mac->vaddr; |
| 11080 | + int i = 0, n = nn; |
| 11081 | + |
| 11082 | + FM_DMP_SUBTITLE(buf, n, "\n"); |
| 11083 | + |
| 11084 | + FM_DMP_TITLE(buf, n, p_mm, "FM MAC - DTSEC-%d", h_mac->cell_index); |
| 11085 | + |
| 11086 | + FM_DMP_V32(buf, n, p_mm, tsec_id); |
| 11087 | + FM_DMP_V32(buf, n, p_mm, tsec_id2); |
| 11088 | + FM_DMP_V32(buf, n, p_mm, ievent); |
| 11089 | + FM_DMP_V32(buf, n, p_mm, imask); |
| 11090 | + FM_DMP_V32(buf, n, p_mm, ecntrl); |
| 11091 | + FM_DMP_V32(buf, n, p_mm, ptv); |
| 11092 | + FM_DMP_V32(buf, n, p_mm, tmr_ctrl); |
| 11093 | + FM_DMP_V32(buf, n, p_mm, tmr_pevent); |
| 11094 | + FM_DMP_V32(buf, n, p_mm, tmr_pemask); |
| 11095 | + FM_DMP_V32(buf, n, p_mm, tctrl); |
| 11096 | + FM_DMP_V32(buf, n, p_mm, rctrl); |
| 11097 | + FM_DMP_V32(buf, n, p_mm, maccfg1); |
| 11098 | + FM_DMP_V32(buf, n, p_mm, maccfg2); |
| 11099 | + FM_DMP_V32(buf, n, p_mm, ipgifg); |
| 11100 | + FM_DMP_V32(buf, n, p_mm, hafdup); |
| 11101 | + FM_DMP_V32(buf, n, p_mm, maxfrm); |
| 11102 | + |
| 11103 | + FM_DMP_V32(buf, n, p_mm, macstnaddr1); |
| 11104 | + FM_DMP_V32(buf, n, p_mm, macstnaddr2); |
| 11105 | + |
| 11106 | + for (i = 0; i < 7; ++i) { |
| 11107 | + FM_DMP_V32(buf, n, p_mm, macaddr[i].exact_match1); |
| 11108 | + FM_DMP_V32(buf, n, p_mm, macaddr[i].exact_match2); |
| 11109 | + } |
| 11110 | + |
| 11111 | + FM_DMP_V32(buf, n, p_mm, car1); |
| 11112 | + FM_DMP_V32(buf, n, p_mm, car2); |
| 11113 | + |
| 11114 | + return n; |
| 11115 | +} |
| 11116 | + |
| 11117 | +static int xgmac_dump_regs(struct mac_device *h_mac, char *buf, int nn) |
| 11118 | +{ |
| 11119 | + struct tgec_regs *p_mm = (struct tgec_regs *) h_mac->vaddr; |
| 11120 | + int n = nn; |
| 11121 | + |
| 11122 | + FM_DMP_SUBTITLE(buf, n, "\n"); |
| 11123 | + FM_DMP_TITLE(buf, n, p_mm, "FM MAC - TGEC -%d", h_mac->cell_index); |
| 11124 | + |
| 11125 | + FM_DMP_V32(buf, n, p_mm, tgec_id); |
| 11126 | + FM_DMP_V32(buf, n, p_mm, command_config); |
| 11127 | + FM_DMP_V32(buf, n, p_mm, mac_addr_0); |
| 11128 | + FM_DMP_V32(buf, n, p_mm, mac_addr_1); |
| 11129 | + FM_DMP_V32(buf, n, p_mm, maxfrm); |
| 11130 | + FM_DMP_V32(buf, n, p_mm, pause_quant); |
| 11131 | + FM_DMP_V32(buf, n, p_mm, rx_fifo_sections); |
| 11132 | + FM_DMP_V32(buf, n, p_mm, tx_fifo_sections); |
| 11133 | + FM_DMP_V32(buf, n, p_mm, rx_fifo_almost_f_e); |
| 11134 | + FM_DMP_V32(buf, n, p_mm, tx_fifo_almost_f_e); |
| 11135 | + FM_DMP_V32(buf, n, p_mm, hashtable_ctrl); |
| 11136 | + FM_DMP_V32(buf, n, p_mm, mdio_cfg_status); |
| 11137 | + FM_DMP_V32(buf, n, p_mm, mdio_command); |
| 11138 | + FM_DMP_V32(buf, n, p_mm, mdio_data); |
| 11139 | + FM_DMP_V32(buf, n, p_mm, mdio_regaddr); |
| 11140 | + FM_DMP_V32(buf, n, p_mm, status); |
| 11141 | + FM_DMP_V32(buf, n, p_mm, tx_ipg_len); |
| 11142 | + FM_DMP_V32(buf, n, p_mm, mac_addr_2); |
| 11143 | + FM_DMP_V32(buf, n, p_mm, mac_addr_3); |
| 11144 | + FM_DMP_V32(buf, n, p_mm, rx_fifo_ptr_rd); |
| 11145 | + FM_DMP_V32(buf, n, p_mm, rx_fifo_ptr_wr); |
| 11146 | + FM_DMP_V32(buf, n, p_mm, tx_fifo_ptr_rd); |
| 11147 | + FM_DMP_V32(buf, n, p_mm, tx_fifo_ptr_wr); |
| 11148 | + FM_DMP_V32(buf, n, p_mm, imask); |
| 11149 | + FM_DMP_V32(buf, n, p_mm, ievent); |
| 11150 | + |
| 11151 | + return n; |
| 11152 | +} |
| 11153 | + |
| 11154 | +static int memac_dump_regs(struct mac_device *h_mac, char *buf, int nn) |
| 11155 | +{ |
| 11156 | + struct memac_regs *p_mm = (struct memac_regs *) h_mac->vaddr; |
| 11157 | + int i = 0, n = nn; |
| 11158 | + |
| 11159 | + FM_DMP_SUBTITLE(buf, n, "\n"); |
| 11160 | + FM_DMP_TITLE(buf, n, p_mm, "FM MAC - MEMAC -%d", h_mac->cell_index); |
| 11161 | + |
| 11162 | + FM_DMP_V32(buf, n, p_mm, command_config); |
| 11163 | + FM_DMP_V32(buf, n, p_mm, mac_addr0.mac_addr_l); |
| 11164 | + FM_DMP_V32(buf, n, p_mm, mac_addr0.mac_addr_u); |
| 11165 | + FM_DMP_V32(buf, n, p_mm, maxfrm); |
| 11166 | + FM_DMP_V32(buf, n, p_mm, hashtable_ctrl); |
| 11167 | + FM_DMP_V32(buf, n, p_mm, ievent); |
| 11168 | + FM_DMP_V32(buf, n, p_mm, tx_ipg_length); |
| 11169 | + FM_DMP_V32(buf, n, p_mm, imask); |
| 11170 | + |
| 11171 | + for (i = 0; i < 4; ++i) |
| 11172 | + FM_DMP_V32(buf, n, p_mm, pause_quanta[i]); |
| 11173 | + |
| 11174 | + for (i = 0; i < 4; ++i) |
| 11175 | + FM_DMP_V32(buf, n, p_mm, pause_thresh[i]); |
| 11176 | + |
| 11177 | + FM_DMP_V32(buf, n, p_mm, rx_pause_status); |
| 11178 | + |
| 11179 | + for (i = 0; i < MEMAC_NUM_OF_PADDRS; ++i) { |
| 11180 | + FM_DMP_V32(buf, n, p_mm, mac_addr[i].mac_addr_l); |
| 11181 | + FM_DMP_V32(buf, n, p_mm, mac_addr[i].mac_addr_u); |
| 11182 | + } |
| 11183 | + |
| 11184 | + FM_DMP_V32(buf, n, p_mm, lpwake_timer); |
| 11185 | + FM_DMP_V32(buf, n, p_mm, sleep_timer); |
| 11186 | + FM_DMP_V32(buf, n, p_mm, statn_config); |
| 11187 | + FM_DMP_V32(buf, n, p_mm, if_mode); |
| 11188 | + FM_DMP_V32(buf, n, p_mm, if_status); |
| 11189 | + FM_DMP_V32(buf, n, p_mm, hg_config); |
| 11190 | + FM_DMP_V32(buf, n, p_mm, hg_pause_quanta); |
| 11191 | + FM_DMP_V32(buf, n, p_mm, hg_pause_thresh); |
| 11192 | + FM_DMP_V32(buf, n, p_mm, hgrx_pause_status); |
| 11193 | + FM_DMP_V32(buf, n, p_mm, hg_fifos_status); |
| 11194 | + FM_DMP_V32(buf, n, p_mm, rhm); |
| 11195 | + FM_DMP_V32(buf, n, p_mm, thm); |
| 11196 | + |
| 11197 | + return n; |
| 11198 | +} |
| 11199 | + |
| 11200 | +static int memac_dump_regs_rx(struct mac_device *h_mac, char *buf, int nn) |
| 11201 | +{ |
| 11202 | + struct memac_regs *p_mm = (struct memac_regs *) h_mac->vaddr; |
| 11203 | + int n = nn; |
| 11204 | + |
| 11205 | + FM_DMP_SUBTITLE(buf, n, "\n"); |
| 11206 | + FM_DMP_TITLE(buf, n, p_mm, "FM MAC - MEMAC -%d Rx stats", h_mac->cell_index); |
| 11207 | + |
| 11208 | + /* Rx Statistics Counter */ |
| 11209 | + FM_DMP_V32(buf, n, p_mm, reoct_l); |
| 11210 | + FM_DMP_V32(buf, n, p_mm, reoct_u); |
| 11211 | + FM_DMP_V32(buf, n, p_mm, roct_l); |
| 11212 | + FM_DMP_V32(buf, n, p_mm, roct_u); |
| 11213 | + FM_DMP_V32(buf, n, p_mm, raln_l); |
| 11214 | + FM_DMP_V32(buf, n, p_mm, raln_u); |
| 11215 | + FM_DMP_V32(buf, n, p_mm, rxpf_l); |
| 11216 | + FM_DMP_V32(buf, n, p_mm, rxpf_u); |
| 11217 | + FM_DMP_V32(buf, n, p_mm, rfrm_l); |
| 11218 | + FM_DMP_V32(buf, n, p_mm, rfrm_u); |
| 11219 | + FM_DMP_V32(buf, n, p_mm, rfcs_l); |
| 11220 | + FM_DMP_V32(buf, n, p_mm, rfcs_u); |
| 11221 | + FM_DMP_V32(buf, n, p_mm, rvlan_l); |
| 11222 | + FM_DMP_V32(buf, n, p_mm, rvlan_u); |
| 11223 | + FM_DMP_V32(buf, n, p_mm, rerr_l); |
| 11224 | + FM_DMP_V32(buf, n, p_mm, rerr_u); |
| 11225 | + FM_DMP_V32(buf, n, p_mm, ruca_l); |
| 11226 | + FM_DMP_V32(buf, n, p_mm, ruca_u); |
| 11227 | + FM_DMP_V32(buf, n, p_mm, rmca_l); |
| 11228 | + FM_DMP_V32(buf, n, p_mm, rmca_u); |
| 11229 | + FM_DMP_V32(buf, n, p_mm, rbca_l); |
| 11230 | + FM_DMP_V32(buf, n, p_mm, rbca_u); |
| 11231 | + FM_DMP_V32(buf, n, p_mm, rdrp_l); |
| 11232 | + FM_DMP_V32(buf, n, p_mm, rdrp_u); |
| 11233 | + FM_DMP_V32(buf, n, p_mm, rpkt_l); |
| 11234 | + FM_DMP_V32(buf, n, p_mm, rpkt_u); |
| 11235 | + FM_DMP_V32(buf, n, p_mm, rund_l); |
| 11236 | + FM_DMP_V32(buf, n, p_mm, rund_u); |
| 11237 | + FM_DMP_V32(buf, n, p_mm, r64_l); |
| 11238 | + FM_DMP_V32(buf, n, p_mm, r64_u); |
| 11239 | + FM_DMP_V32(buf, n, p_mm, r127_l); |
| 11240 | + FM_DMP_V32(buf, n, p_mm, r127_u); |
| 11241 | + FM_DMP_V32(buf, n, p_mm, r255_l); |
| 11242 | + FM_DMP_V32(buf, n, p_mm, r255_u); |
| 11243 | + FM_DMP_V32(buf, n, p_mm, r511_l); |
| 11244 | + FM_DMP_V32(buf, n, p_mm, r511_u); |
| 11245 | + FM_DMP_V32(buf, n, p_mm, r1023_l); |
| 11246 | + FM_DMP_V32(buf, n, p_mm, r1023_u); |
| 11247 | + FM_DMP_V32(buf, n, p_mm, r1518_l); |
| 11248 | + FM_DMP_V32(buf, n, p_mm, r1518_u); |
| 11249 | + FM_DMP_V32(buf, n, p_mm, r1519x_l); |
| 11250 | + FM_DMP_V32(buf, n, p_mm, r1519x_u); |
| 11251 | + FM_DMP_V32(buf, n, p_mm, rovr_l); |
| 11252 | + FM_DMP_V32(buf, n, p_mm, rovr_u); |
| 11253 | + FM_DMP_V32(buf, n, p_mm, rjbr_l); |
| 11254 | + FM_DMP_V32(buf, n, p_mm, rjbr_u); |
| 11255 | + FM_DMP_V32(buf, n, p_mm, rfrg_l); |
| 11256 | + FM_DMP_V32(buf, n, p_mm, rfrg_u); |
| 11257 | + FM_DMP_V32(buf, n, p_mm, rcnp_l); |
| 11258 | + FM_DMP_V32(buf, n, p_mm, rcnp_u); |
| 11259 | + FM_DMP_V32(buf, n, p_mm, rdrntp_l); |
| 11260 | + FM_DMP_V32(buf, n, p_mm, rdrntp_u); |
| 11261 | + |
| 11262 | + return n; |
| 11263 | +} |
| 11264 | + |
| 11265 | +static int memac_dump_regs_tx(struct mac_device *h_mac, char *buf, int nn) |
| 11266 | +{ |
| 11267 | + struct memac_regs *p_mm = (struct memac_regs *) h_mac->vaddr; |
| 11268 | + int n = nn; |
| 11269 | + |
| 11270 | + FM_DMP_SUBTITLE(buf, n, "\n"); |
| 11271 | + FM_DMP_TITLE(buf, n, p_mm, "FM MAC - MEMAC -%d Tx stats", h_mac->cell_index); |
| 11272 | + |
| 11273 | + |
| 11274 | + /* Tx Statistics Counter */ |
| 11275 | + FM_DMP_V32(buf, n, p_mm, teoct_l); |
| 11276 | + FM_DMP_V32(buf, n, p_mm, teoct_u); |
| 11277 | + FM_DMP_V32(buf, n, p_mm, toct_l); |
| 11278 | + FM_DMP_V32(buf, n, p_mm, toct_u); |
| 11279 | + FM_DMP_V32(buf, n, p_mm, txpf_l); |
| 11280 | + FM_DMP_V32(buf, n, p_mm, txpf_u); |
| 11281 | + FM_DMP_V32(buf, n, p_mm, tfrm_l); |
| 11282 | + FM_DMP_V32(buf, n, p_mm, tfrm_u); |
| 11283 | + FM_DMP_V32(buf, n, p_mm, tfcs_l); |
| 11284 | + FM_DMP_V32(buf, n, p_mm, tfcs_u); |
| 11285 | + FM_DMP_V32(buf, n, p_mm, tvlan_l); |
| 11286 | + FM_DMP_V32(buf, n, p_mm, tvlan_u); |
| 11287 | + FM_DMP_V32(buf, n, p_mm, terr_l); |
| 11288 | + FM_DMP_V32(buf, n, p_mm, terr_u); |
| 11289 | + FM_DMP_V32(buf, n, p_mm, tuca_l); |
| 11290 | + FM_DMP_V32(buf, n, p_mm, tuca_u); |
| 11291 | + FM_DMP_V32(buf, n, p_mm, tmca_l); |
| 11292 | + FM_DMP_V32(buf, n, p_mm, tmca_u); |
| 11293 | + FM_DMP_V32(buf, n, p_mm, tbca_l); |
| 11294 | + FM_DMP_V32(buf, n, p_mm, tbca_u); |
| 11295 | + FM_DMP_V32(buf, n, p_mm, tpkt_l); |
| 11296 | + FM_DMP_V32(buf, n, p_mm, tpkt_u); |
| 11297 | + FM_DMP_V32(buf, n, p_mm, tund_l); |
| 11298 | + FM_DMP_V32(buf, n, p_mm, tund_u); |
| 11299 | + FM_DMP_V32(buf, n, p_mm, t64_l); |
| 11300 | + FM_DMP_V32(buf, n, p_mm, t64_u); |
| 11301 | + FM_DMP_V32(buf, n, p_mm, t127_l); |
| 11302 | + FM_DMP_V32(buf, n, p_mm, t127_u); |
| 11303 | + FM_DMP_V32(buf, n, p_mm, t255_l); |
| 11304 | + FM_DMP_V32(buf, n, p_mm, t255_u); |
| 11305 | + FM_DMP_V32(buf, n, p_mm, t511_l); |
| 11306 | + FM_DMP_V32(buf, n, p_mm, t511_u); |
| 11307 | + FM_DMP_V32(buf, n, p_mm, t1023_l); |
| 11308 | + FM_DMP_V32(buf, n, p_mm, t1023_u); |
| 11309 | + FM_DMP_V32(buf, n, p_mm, t1518_l); |
| 11310 | + FM_DMP_V32(buf, n, p_mm, t1518_u); |
| 11311 | + FM_DMP_V32(buf, n, p_mm, t1519x_l); |
| 11312 | + FM_DMP_V32(buf, n, p_mm, t1519x_u); |
| 11313 | + FM_DMP_V32(buf, n, p_mm, tcnp_l); |
| 11314 | + FM_DMP_V32(buf, n, p_mm, tcnp_u); |
| 11315 | + |
| 11316 | + return n; |
| 11317 | +} |
| 11318 | + |
| 11319 | +int fm_mac_dump_regs(struct mac_device *h_mac, char *buf, int nn) |
| 11320 | +{ |
| 11321 | + int n = nn; |
| 11322 | + |
| 11323 | + n = h_mac->dump_mac_regs(h_mac, buf, n); |
| 11324 | + |
| 11325 | + return n; |
| 11326 | +} |
| 11327 | +EXPORT_SYMBOL(fm_mac_dump_regs); |
| 11328 | + |
| 11329 | +int fm_mac_dump_rx_stats(struct mac_device *h_mac, char *buf, int nn) |
| 11330 | +{ |
| 11331 | + int n = nn; |
| 11332 | + |
| 11333 | + if(h_mac->dump_mac_rx_stats) |
| 11334 | + n = h_mac->dump_mac_rx_stats(h_mac, buf, n); |
| 11335 | + |
| 11336 | + return n; |
| 11337 | +} |
| 11338 | +EXPORT_SYMBOL(fm_mac_dump_rx_stats); |
| 11339 | + |
| 11340 | +int fm_mac_dump_tx_stats(struct mac_device *h_mac, char *buf, int nn) |
| 11341 | +{ |
| 11342 | + int n = nn; |
| 11343 | + |
| 11344 | + if(h_mac->dump_mac_tx_stats) |
| 11345 | + n = h_mac->dump_mac_tx_stats(h_mac, buf, n); |
| 11346 | + |
| 11347 | + return n; |
| 11348 | +} |
| 11349 | +EXPORT_SYMBOL(fm_mac_dump_tx_stats); |
| 11350 | + |
| 11351 | +static void __cold setup_dtsec(struct mac_device *mac_dev) |
| 11352 | +{ |
| 11353 | + mac_dev->init_phy = dtsec_init_phy; |
| 11354 | + mac_dev->init = init; |
| 11355 | + mac_dev->start = start; |
| 11356 | + mac_dev->stop = stop; |
| 11357 | + mac_dev->set_promisc = fm_mac_set_promiscuous; |
| 11358 | + mac_dev->change_addr = fm_mac_modify_mac_addr; |
| 11359 | + mac_dev->set_multi = set_multi; |
| 11360 | + mac_dev->uninit = uninit; |
| 11361 | + mac_dev->ptp_enable = fm_mac_enable_1588_time_stamp; |
| 11362 | + mac_dev->ptp_disable = fm_mac_disable_1588_time_stamp; |
| 11363 | + mac_dev->get_mac_handle = get_mac_handle; |
| 11364 | + mac_dev->set_tx_pause = fm_mac_set_tx_pause_frames; |
| 11365 | + mac_dev->set_rx_pause = fm_mac_set_rx_pause_frames; |
| 11366 | + mac_dev->fm_rtc_enable = fm_rtc_enable; |
| 11367 | + mac_dev->fm_rtc_disable = fm_rtc_disable; |
| 11368 | + mac_dev->fm_rtc_get_cnt = fm_rtc_get_cnt; |
| 11369 | + mac_dev->fm_rtc_set_cnt = fm_rtc_set_cnt; |
| 11370 | + mac_dev->fm_rtc_get_drift = fm_rtc_get_drift; |
| 11371 | + mac_dev->fm_rtc_set_drift = fm_rtc_set_drift; |
| 11372 | + mac_dev->fm_rtc_set_alarm = fm_rtc_set_alarm; |
| 11373 | + mac_dev->fm_rtc_set_fiper = fm_rtc_set_fiper; |
| 11374 | + mac_dev->set_wol = fm_mac_set_wol; |
| 11375 | + mac_dev->dump_mac_regs = dtsec_dump_regs; |
| 11376 | +} |
| 11377 | + |
| 11378 | +static void __cold setup_xgmac(struct mac_device *mac_dev) |
| 11379 | +{ |
| 11380 | + mac_dev->init_phy = xgmac_init_phy; |
| 11381 | + mac_dev->init = init; |
| 11382 | + mac_dev->start = start; |
| 11383 | + mac_dev->stop = stop; |
| 11384 | + mac_dev->set_promisc = fm_mac_set_promiscuous; |
| 11385 | + mac_dev->change_addr = fm_mac_modify_mac_addr; |
| 11386 | + mac_dev->set_multi = set_multi; |
| 11387 | + mac_dev->uninit = uninit; |
| 11388 | + mac_dev->get_mac_handle = get_mac_handle; |
| 11389 | + mac_dev->set_tx_pause = fm_mac_set_tx_pause_frames; |
| 11390 | + mac_dev->set_rx_pause = fm_mac_set_rx_pause_frames; |
| 11391 | + mac_dev->set_wol = fm_mac_set_wol; |
| 11392 | + mac_dev->dump_mac_regs = xgmac_dump_regs; |
| 11393 | +} |
| 11394 | + |
| 11395 | +static void __cold setup_memac(struct mac_device *mac_dev) |
| 11396 | +{ |
| 11397 | + mac_dev->init_phy = memac_init_phy; |
| 11398 | + mac_dev->init = memac_init; |
| 11399 | + mac_dev->start = start; |
| 11400 | + mac_dev->stop = stop; |
| 11401 | + mac_dev->set_promisc = fm_mac_set_promiscuous; |
| 11402 | + mac_dev->change_addr = fm_mac_modify_mac_addr; |
| 11403 | + mac_dev->set_multi = set_multi; |
| 11404 | + mac_dev->uninit = uninit; |
| 11405 | + mac_dev->get_mac_handle = get_mac_handle; |
| 11406 | + mac_dev->set_tx_pause = fm_mac_set_tx_pause_frames; |
| 11407 | + mac_dev->set_rx_pause = fm_mac_set_rx_pause_frames; |
| 11408 | + mac_dev->fm_rtc_enable = fm_rtc_enable; |
| 11409 | + mac_dev->fm_rtc_disable = fm_rtc_disable; |
| 11410 | + mac_dev->fm_rtc_get_cnt = fm_rtc_get_cnt; |
| 11411 | + mac_dev->fm_rtc_set_cnt = fm_rtc_set_cnt; |
| 11412 | + mac_dev->fm_rtc_get_drift = fm_rtc_get_drift; |
| 11413 | + mac_dev->fm_rtc_set_drift = fm_rtc_set_drift; |
| 11414 | + mac_dev->fm_rtc_set_alarm = fm_rtc_set_alarm; |
| 11415 | + mac_dev->fm_rtc_set_fiper = fm_rtc_set_fiper; |
| 11416 | + mac_dev->set_wol = fm_mac_set_wol; |
| 11417 | + mac_dev->dump_mac_regs = memac_dump_regs; |
| 11418 | + mac_dev->dump_mac_rx_stats = memac_dump_regs_rx; |
| 11419 | + mac_dev->dump_mac_tx_stats = memac_dump_regs_tx; |
| 11420 | +} |
| 11421 | + |
| 11422 | +void (*const mac_setup[])(struct mac_device *mac_dev) = { |
| 11423 | + [DTSEC] = setup_dtsec, |
| 11424 | + [XGMAC] = setup_xgmac, |
| 11425 | + [MEMAC] = setup_memac |
| 11426 | +}; |
| 11427 | --- /dev/null |
| 11428 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/mac.c |
| 11429 | @@ -0,0 +1,489 @@ |
| 11430 | +/* Copyright 2008-2012 Freescale Semiconductor, Inc. |
| 11431 | + * |
| 11432 | + * Redistribution and use in source and binary forms, with or without |
| 11433 | + * modification, are permitted provided that the following conditions are met: |
| 11434 | + * * Redistributions of source code must retain the above copyright |
| 11435 | + * notice, this list of conditions and the following disclaimer. |
| 11436 | + * * Redistributions in binary form must reproduce the above copyright |
| 11437 | + * notice, this list of conditions and the following disclaimer in the |
| 11438 | + * documentation and/or other materials provided with the distribution. |
| 11439 | + * * Neither the name of Freescale Semiconductor nor the |
| 11440 | + * names of its contributors may be used to endorse or promote products |
| 11441 | + * derived from this software without specific prior written permission. |
| 11442 | + * |
| 11443 | + * |
| 11444 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 11445 | + * GNU General Public License ("GPL") as published by the Free Software |
| 11446 | + * Foundation, either version 2 of that License or (at your option) any |
| 11447 | + * later version. |
| 11448 | + * |
| 11449 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 11450 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 11451 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 11452 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 11453 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 11454 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 11455 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 11456 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 11457 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 11458 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 11459 | + */ |
| 11460 | + |
| 11461 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 11462 | +#define pr_fmt(fmt) \ |
| 11463 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 11464 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 11465 | +#else |
| 11466 | +#define pr_fmt(fmt) \ |
| 11467 | + KBUILD_MODNAME ": " fmt |
| 11468 | +#endif |
| 11469 | + |
| 11470 | +#include <linux/init.h> |
| 11471 | +#include <linux/module.h> |
| 11472 | +#include <linux/of_address.h> |
| 11473 | +#include <linux/of_platform.h> |
| 11474 | +#include <linux/of_net.h> |
| 11475 | +#include <linux/of_mdio.h> |
| 11476 | +#include <linux/phy_fixed.h> |
| 11477 | +#include <linux/device.h> |
| 11478 | +#include <linux/phy.h> |
| 11479 | +#include <linux/io.h> |
| 11480 | + |
| 11481 | +#include "lnxwrp_fm_ext.h" |
| 11482 | + |
| 11483 | +#include "mac.h" |
| 11484 | + |
| 11485 | +#define DTSEC_SUPPORTED \ |
| 11486 | + (SUPPORTED_10baseT_Half \ |
| 11487 | + | SUPPORTED_10baseT_Full \ |
| 11488 | + | SUPPORTED_100baseT_Half \ |
| 11489 | + | SUPPORTED_100baseT_Full \ |
| 11490 | + | SUPPORTED_Autoneg \ |
| 11491 | + | SUPPORTED_Pause \ |
| 11492 | + | SUPPORTED_Asym_Pause \ |
| 11493 | + | SUPPORTED_MII) |
| 11494 | + |
| 11495 | +static const char phy_str[][11] = { |
| 11496 | + [PHY_INTERFACE_MODE_MII] = "mii", |
| 11497 | + [PHY_INTERFACE_MODE_GMII] = "gmii", |
| 11498 | + [PHY_INTERFACE_MODE_SGMII] = "sgmii", |
| 11499 | + [PHY_INTERFACE_MODE_QSGMII] = "qsgmii", |
| 11500 | + [PHY_INTERFACE_MODE_TBI] = "tbi", |
| 11501 | + [PHY_INTERFACE_MODE_RMII] = "rmii", |
| 11502 | + [PHY_INTERFACE_MODE_RGMII] = "rgmii", |
| 11503 | + [PHY_INTERFACE_MODE_RGMII_ID] = "rgmii-id", |
| 11504 | + [PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid", |
| 11505 | + [PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid", |
| 11506 | + [PHY_INTERFACE_MODE_RTBI] = "rtbi", |
| 11507 | + [PHY_INTERFACE_MODE_XGMII] = "xgmii", |
| 11508 | + [PHY_INTERFACE_MODE_SGMII_2500] = "sgmii-2500", |
| 11509 | +}; |
| 11510 | + |
| 11511 | +static phy_interface_t __pure __attribute__((nonnull)) str2phy(const char *str) |
| 11512 | +{ |
| 11513 | + int i; |
| 11514 | + |
| 11515 | + for (i = 0; i < ARRAY_SIZE(phy_str); i++) |
| 11516 | + if (strcmp(str, phy_str[i]) == 0) |
| 11517 | + return (phy_interface_t)i; |
| 11518 | + |
| 11519 | + return PHY_INTERFACE_MODE_MII; |
| 11520 | +} |
| 11521 | + |
| 11522 | +static const uint16_t phy2speed[] = { |
| 11523 | + [PHY_INTERFACE_MODE_MII] = SPEED_100, |
| 11524 | + [PHY_INTERFACE_MODE_GMII] = SPEED_1000, |
| 11525 | + [PHY_INTERFACE_MODE_SGMII] = SPEED_1000, |
| 11526 | + [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000, |
| 11527 | + [PHY_INTERFACE_MODE_TBI] = SPEED_1000, |
| 11528 | + [PHY_INTERFACE_MODE_RMII] = SPEED_100, |
| 11529 | + [PHY_INTERFACE_MODE_RGMII] = SPEED_1000, |
| 11530 | + [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000, |
| 11531 | + [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000, |
| 11532 | + [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000, |
| 11533 | + [PHY_INTERFACE_MODE_RTBI] = SPEED_1000, |
| 11534 | + [PHY_INTERFACE_MODE_XGMII] = SPEED_10000, |
| 11535 | + [PHY_INTERFACE_MODE_SGMII_2500] = SPEED_2500, |
| 11536 | +}; |
| 11537 | + |
| 11538 | +static struct mac_device * __cold |
| 11539 | +alloc_macdev(struct device *dev, size_t sizeof_priv, |
| 11540 | + void (*setup)(struct mac_device *mac_dev)) |
| 11541 | +{ |
| 11542 | + struct mac_device *mac_dev; |
| 11543 | + |
| 11544 | + mac_dev = devm_kzalloc(dev, sizeof(*mac_dev) + sizeof_priv, GFP_KERNEL); |
| 11545 | + if (unlikely(mac_dev == NULL)) |
| 11546 | + mac_dev = ERR_PTR(-ENOMEM); |
| 11547 | + else { |
| 11548 | + mac_dev->dev = dev; |
| 11549 | + dev_set_drvdata(dev, mac_dev); |
| 11550 | + setup(mac_dev); |
| 11551 | + } |
| 11552 | + |
| 11553 | + return mac_dev; |
| 11554 | +} |
| 11555 | + |
| 11556 | +static int __cold free_macdev(struct mac_device *mac_dev) |
| 11557 | +{ |
| 11558 | + dev_set_drvdata(mac_dev->dev, NULL); |
| 11559 | + |
| 11560 | + return mac_dev->uninit(mac_dev->get_mac_handle(mac_dev)); |
| 11561 | +} |
| 11562 | + |
| 11563 | +static const struct of_device_id mac_match[] = { |
| 11564 | + [DTSEC] = { |
| 11565 | + .compatible = "fsl,fman-1g-mac" |
| 11566 | + }, |
| 11567 | + [XGMAC] = { |
| 11568 | + .compatible = "fsl,fman-10g-mac" |
| 11569 | + }, |
| 11570 | + [MEMAC] = { |
| 11571 | + .compatible = "fsl,fman-memac" |
| 11572 | + }, |
| 11573 | + {} |
| 11574 | +}; |
| 11575 | +MODULE_DEVICE_TABLE(of, mac_match); |
| 11576 | + |
| 11577 | +static int __cold mac_probe(struct platform_device *_of_dev) |
| 11578 | +{ |
| 11579 | + int _errno, i; |
| 11580 | + struct device *dev; |
| 11581 | + struct device_node *mac_node, *dev_node; |
| 11582 | + struct mac_device *mac_dev; |
| 11583 | + struct platform_device *of_dev; |
| 11584 | + struct resource res; |
| 11585 | + const uint8_t *mac_addr; |
| 11586 | + const char *char_prop; |
| 11587 | + int nph; |
| 11588 | + u32 cell_index; |
| 11589 | + const struct of_device_id *match; |
| 11590 | + |
| 11591 | + dev = &_of_dev->dev; |
| 11592 | + mac_node = dev->of_node; |
| 11593 | + |
| 11594 | + match = of_match_device(mac_match, dev); |
| 11595 | + if (!match) |
| 11596 | + return -EINVAL; |
| 11597 | + |
| 11598 | + for (i = 0; i < ARRAY_SIZE(mac_match) - 1 && match != mac_match + i; |
| 11599 | + i++) |
| 11600 | + ; |
| 11601 | + BUG_ON(i >= ARRAY_SIZE(mac_match) - 1); |
| 11602 | + |
| 11603 | + mac_dev = alloc_macdev(dev, mac_sizeof_priv[i], mac_setup[i]); |
| 11604 | + if (IS_ERR(mac_dev)) { |
| 11605 | + _errno = PTR_ERR(mac_dev); |
| 11606 | + dev_err(dev, "alloc_macdev() = %d\n", _errno); |
| 11607 | + goto _return; |
| 11608 | + } |
| 11609 | + |
| 11610 | + INIT_LIST_HEAD(&mac_dev->mc_addr_list); |
| 11611 | + |
| 11612 | + /* Get the FM node */ |
| 11613 | + dev_node = of_get_parent(mac_node); |
| 11614 | + if (unlikely(dev_node == NULL)) { |
| 11615 | + dev_err(dev, "of_get_parent(%s) failed\n", |
| 11616 | + mac_node->full_name); |
| 11617 | + _errno = -EINVAL; |
| 11618 | + goto _return_dev_set_drvdata; |
| 11619 | + } |
| 11620 | + |
| 11621 | + of_dev = of_find_device_by_node(dev_node); |
| 11622 | + if (unlikely(of_dev == NULL)) { |
| 11623 | + dev_err(dev, "of_find_device_by_node(%s) failed\n", |
| 11624 | + dev_node->full_name); |
| 11625 | + _errno = -EINVAL; |
| 11626 | + goto _return_of_node_put; |
| 11627 | + } |
| 11628 | + |
| 11629 | + mac_dev->fm_dev = fm_bind(&of_dev->dev); |
| 11630 | + if (unlikely(mac_dev->fm_dev == NULL)) { |
| 11631 | + dev_err(dev, "fm_bind(%s) failed\n", dev_node->full_name); |
| 11632 | + _errno = -ENODEV; |
| 11633 | + goto _return_of_node_put; |
| 11634 | + } |
| 11635 | + |
| 11636 | + mac_dev->fm = (void *)fm_get_handle(mac_dev->fm_dev); |
| 11637 | + of_node_put(dev_node); |
| 11638 | + |
| 11639 | + /* Get the address of the memory mapped registers */ |
| 11640 | + _errno = of_address_to_resource(mac_node, 0, &res); |
| 11641 | + if (unlikely(_errno < 0)) { |
| 11642 | + dev_err(dev, "of_address_to_resource(%s) = %d\n", |
| 11643 | + mac_node->full_name, _errno); |
| 11644 | + goto _return_dev_set_drvdata; |
| 11645 | + } |
| 11646 | + |
| 11647 | + mac_dev->res = __devm_request_region( |
| 11648 | + dev, |
| 11649 | + fm_get_mem_region(mac_dev->fm_dev), |
| 11650 | + res.start, res.end + 1 - res.start, "mac"); |
| 11651 | + if (unlikely(mac_dev->res == NULL)) { |
| 11652 | + dev_err(dev, "__devm_request_mem_region(mac) failed\n"); |
| 11653 | + _errno = -EBUSY; |
| 11654 | + goto _return_dev_set_drvdata; |
| 11655 | + } |
| 11656 | + |
| 11657 | + mac_dev->vaddr = devm_ioremap(dev, mac_dev->res->start, |
| 11658 | + mac_dev->res->end + 1 |
| 11659 | + - mac_dev->res->start); |
| 11660 | + if (unlikely(mac_dev->vaddr == NULL)) { |
| 11661 | + dev_err(dev, "devm_ioremap() failed\n"); |
| 11662 | + _errno = -EIO; |
| 11663 | + goto _return_dev_set_drvdata; |
| 11664 | + } |
| 11665 | + |
| 11666 | +#define TBIPA_OFFSET 0x1c |
| 11667 | +#define TBIPA_DEFAULT_ADDR 5 /* override if used as external PHY addr. */ |
| 11668 | + mac_dev->tbi_node = of_parse_phandle(mac_node, "tbi-handle", 0); |
| 11669 | + if (mac_dev->tbi_node) { |
| 11670 | + u32 tbiaddr = TBIPA_DEFAULT_ADDR; |
| 11671 | + const __be32 *tbi_reg; |
| 11672 | + void __iomem *addr; |
| 11673 | + |
| 11674 | + tbi_reg = of_get_property(mac_dev->tbi_node, "reg", NULL); |
| 11675 | + if (tbi_reg) |
| 11676 | + tbiaddr = be32_to_cpup(tbi_reg); |
| 11677 | + addr = mac_dev->vaddr + TBIPA_OFFSET; |
| 11678 | + /* TODO: out_be32 does not exist on ARM */ |
| 11679 | + out_be32(addr, tbiaddr); |
| 11680 | + } |
| 11681 | + |
| 11682 | + if (!of_device_is_available(mac_node)) { |
| 11683 | + devm_iounmap(dev, mac_dev->vaddr); |
| 11684 | + __devm_release_region(dev, fm_get_mem_region(mac_dev->fm_dev), |
| 11685 | + res.start, res.end + 1 - res.start); |
| 11686 | + fm_unbind(mac_dev->fm_dev); |
| 11687 | + devm_kfree(dev, mac_dev); |
| 11688 | + dev_set_drvdata(dev, NULL); |
| 11689 | + return -ENODEV; |
| 11690 | + } |
| 11691 | + |
| 11692 | + /* Get the cell-index */ |
| 11693 | + _errno = of_property_read_u32(mac_node, "cell-index", &cell_index); |
| 11694 | + if (unlikely(_errno)) { |
| 11695 | + dev_err(dev, "Cannot read cell-index of mac node %s from device tree\n", |
| 11696 | + mac_node->full_name); |
| 11697 | + goto _return_dev_set_drvdata; |
| 11698 | + } |
| 11699 | + mac_dev->cell_index = (uint8_t)cell_index; |
| 11700 | + if (mac_dev->cell_index >= 8) |
| 11701 | + mac_dev->cell_index -= 8; |
| 11702 | + |
| 11703 | + /* Get the MAC address */ |
| 11704 | + mac_addr = of_get_mac_address(mac_node); |
| 11705 | + if (unlikely(mac_addr == NULL)) { |
| 11706 | + dev_err(dev, "of_get_mac_address(%s) failed\n", |
| 11707 | + mac_node->full_name); |
| 11708 | + _errno = -EINVAL; |
| 11709 | + goto _return_dev_set_drvdata; |
| 11710 | + } |
| 11711 | + memcpy(mac_dev->addr, mac_addr, sizeof(mac_dev->addr)); |
| 11712 | + |
| 11713 | + /* Verify the number of port handles */ |
| 11714 | + nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); |
| 11715 | + if (unlikely(nph < 0)) { |
| 11716 | + dev_err(dev, "Cannot read port handles of mac node %s from device tree\n", |
| 11717 | + mac_node->full_name); |
| 11718 | + _errno = nph; |
| 11719 | + goto _return_dev_set_drvdata; |
| 11720 | + } |
| 11721 | + |
| 11722 | + if (nph != ARRAY_SIZE(mac_dev->port_dev)) { |
| 11723 | + dev_err(dev, "Not supported number of port handles of mac node %s from device tree\n", |
| 11724 | + mac_node->full_name); |
| 11725 | + _errno = -EINVAL; |
| 11726 | + goto _return_dev_set_drvdata; |
| 11727 | + } |
| 11728 | + |
| 11729 | + for_each_port_device(i, mac_dev->port_dev) { |
| 11730 | + dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i); |
| 11731 | + if (unlikely(dev_node == NULL)) { |
| 11732 | + dev_err(dev, "Cannot find port node referenced by mac node %s from device tree\n", |
| 11733 | + mac_node->full_name); |
| 11734 | + _errno = -EINVAL; |
| 11735 | + goto _return_of_node_put; |
| 11736 | + } |
| 11737 | + |
| 11738 | + of_dev = of_find_device_by_node(dev_node); |
| 11739 | + if (unlikely(of_dev == NULL)) { |
| 11740 | + dev_err(dev, "of_find_device_by_node(%s) failed\n", |
| 11741 | + dev_node->full_name); |
| 11742 | + _errno = -EINVAL; |
| 11743 | + goto _return_of_node_put; |
| 11744 | + } |
| 11745 | + |
| 11746 | + mac_dev->port_dev[i] = fm_port_bind(&of_dev->dev); |
| 11747 | + if (unlikely(mac_dev->port_dev[i] == NULL)) { |
| 11748 | + dev_err(dev, "dev_get_drvdata(%s) failed\n", |
| 11749 | + dev_node->full_name); |
| 11750 | + _errno = -EINVAL; |
| 11751 | + goto _return_of_node_put; |
| 11752 | + } |
| 11753 | + of_node_put(dev_node); |
| 11754 | + } |
| 11755 | + |
| 11756 | + /* Get the PHY connection type */ |
| 11757 | + _errno = of_property_read_string(mac_node, "phy-connection-type", |
| 11758 | + &char_prop); |
| 11759 | + if (unlikely(_errno)) { |
| 11760 | + dev_warn(dev, |
| 11761 | + "Cannot read PHY connection type of mac node %s from device tree. Defaulting to MII\n", |
| 11762 | + mac_node->full_name); |
| 11763 | + mac_dev->phy_if = PHY_INTERFACE_MODE_MII; |
| 11764 | + } else |
| 11765 | + mac_dev->phy_if = str2phy(char_prop); |
| 11766 | + |
| 11767 | + mac_dev->link = false; |
| 11768 | + mac_dev->half_duplex = false; |
| 11769 | + mac_dev->speed = phy2speed[mac_dev->phy_if]; |
| 11770 | + mac_dev->max_speed = mac_dev->speed; |
| 11771 | + mac_dev->if_support = DTSEC_SUPPORTED; |
| 11772 | + /* We don't support half-duplex in SGMII mode */ |
| 11773 | + if (strstr(char_prop, "sgmii") || strstr(char_prop, "qsgmii") || |
| 11774 | + strstr(char_prop, "sgmii-2500")) |
| 11775 | + mac_dev->if_support &= ~(SUPPORTED_10baseT_Half | |
| 11776 | + SUPPORTED_100baseT_Half); |
| 11777 | + |
| 11778 | + /* Gigabit support (no half-duplex) */ |
| 11779 | + if (mac_dev->max_speed == SPEED_1000 || |
| 11780 | + mac_dev->max_speed == SPEED_2500) |
| 11781 | + mac_dev->if_support |= SUPPORTED_1000baseT_Full; |
| 11782 | + |
| 11783 | + /* The 10G interface only supports one mode */ |
| 11784 | + if (strstr(char_prop, "xgmii")) |
| 11785 | + mac_dev->if_support = SUPPORTED_10000baseT_Full; |
| 11786 | + |
| 11787 | + /* Get the rest of the PHY information */ |
| 11788 | + mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0); |
| 11789 | + if (!mac_dev->phy_node) { |
| 11790 | + struct phy_device *phy; |
| 11791 | + |
| 11792 | + if (!of_phy_is_fixed_link(mac_node)) { |
| 11793 | + dev_err(dev, "Wrong PHY information of mac node %s\n", |
| 11794 | + mac_node->full_name); |
| 11795 | + goto _return_dev_set_drvdata; |
| 11796 | + } |
| 11797 | + |
| 11798 | + _errno = of_phy_register_fixed_link(mac_node); |
| 11799 | + if (_errno) |
| 11800 | + goto _return_dev_set_drvdata; |
| 11801 | + |
| 11802 | + mac_dev->fixed_link = devm_kzalloc(mac_dev->dev, |
| 11803 | + sizeof(*mac_dev->fixed_link), |
| 11804 | + GFP_KERNEL); |
| 11805 | + if (!mac_dev->fixed_link) |
| 11806 | + goto _return_dev_set_drvdata; |
| 11807 | + |
| 11808 | + mac_dev->phy_node = of_node_get(mac_node); |
| 11809 | + phy = of_phy_find_device(mac_dev->phy_node); |
| 11810 | + if (!phy) |
| 11811 | + goto _return_dev_set_drvdata; |
| 11812 | + |
| 11813 | + mac_dev->fixed_link->link = phy->link; |
| 11814 | + mac_dev->fixed_link->speed = phy->speed; |
| 11815 | + mac_dev->fixed_link->duplex = phy->duplex; |
| 11816 | + mac_dev->fixed_link->pause = phy->pause; |
| 11817 | + mac_dev->fixed_link->asym_pause = phy->asym_pause; |
| 11818 | + } |
| 11819 | + |
| 11820 | + _errno = mac_dev->init(mac_dev); |
| 11821 | + if (unlikely(_errno < 0)) { |
| 11822 | + dev_err(dev, "mac_dev->init() = %d\n", _errno); |
| 11823 | + goto _return_dev_set_drvdata; |
| 11824 | + } |
| 11825 | + |
| 11826 | + /* pause frame autonegotiation enabled*/ |
| 11827 | + mac_dev->autoneg_pause = true; |
| 11828 | + |
| 11829 | + /* by intializing the values to false, force FMD to enable PAUSE frames |
| 11830 | + * on RX and TX |
| 11831 | + */ |
| 11832 | + mac_dev->rx_pause_req = mac_dev->tx_pause_req = true; |
| 11833 | + mac_dev->rx_pause_active = mac_dev->tx_pause_active = false; |
| 11834 | + _errno = set_mac_active_pause(mac_dev, true, true); |
| 11835 | + if (unlikely(_errno < 0)) |
| 11836 | + dev_err(dev, "set_mac_active_pause() = %d\n", _errno); |
| 11837 | + |
| 11838 | + dev_info(dev, |
| 11839 | + "FMan MAC address: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n", |
| 11840 | + mac_dev->addr[0], mac_dev->addr[1], mac_dev->addr[2], |
| 11841 | + mac_dev->addr[3], mac_dev->addr[4], mac_dev->addr[5]); |
| 11842 | + |
| 11843 | + goto _return; |
| 11844 | + |
| 11845 | +_return_of_node_put: |
| 11846 | + of_node_put(dev_node); |
| 11847 | +_return_dev_set_drvdata: |
| 11848 | + dev_set_drvdata(dev, NULL); |
| 11849 | +_return: |
| 11850 | + return _errno; |
| 11851 | +} |
| 11852 | + |
| 11853 | +static int __cold mac_remove(struct platform_device *of_dev) |
| 11854 | +{ |
| 11855 | + int i, _errno; |
| 11856 | + struct device *dev; |
| 11857 | + struct mac_device *mac_dev; |
| 11858 | + |
| 11859 | + dev = &of_dev->dev; |
| 11860 | + mac_dev = (struct mac_device *)dev_get_drvdata(dev); |
| 11861 | + |
| 11862 | + for_each_port_device(i, mac_dev->port_dev) |
| 11863 | + fm_port_unbind(mac_dev->port_dev[i]); |
| 11864 | + |
| 11865 | + fm_unbind(mac_dev->fm_dev); |
| 11866 | + |
| 11867 | + _errno = free_macdev(mac_dev); |
| 11868 | + |
| 11869 | + return _errno; |
| 11870 | +} |
| 11871 | + |
| 11872 | +static struct platform_driver mac_driver = { |
| 11873 | + .driver = { |
| 11874 | + .name = KBUILD_MODNAME, |
| 11875 | + .of_match_table = mac_match, |
| 11876 | + .owner = THIS_MODULE, |
| 11877 | + }, |
| 11878 | + .probe = mac_probe, |
| 11879 | + .remove = mac_remove |
| 11880 | +}; |
| 11881 | + |
| 11882 | +static int __init __cold mac_load(void) |
| 11883 | +{ |
| 11884 | + int _errno; |
| 11885 | + |
| 11886 | + pr_debug(KBUILD_MODNAME ": -> %s:%s()\n", |
| 11887 | + KBUILD_BASENAME".c", __func__); |
| 11888 | + |
| 11889 | + pr_info(KBUILD_MODNAME ": %s\n", mac_driver_description); |
| 11890 | + |
| 11891 | + _errno = platform_driver_register(&mac_driver); |
| 11892 | + if (unlikely(_errno < 0)) { |
| 11893 | + pr_err(KBUILD_MODNAME ": %s:%hu:%s(): platform_driver_register() = %d\n", |
| 11894 | + KBUILD_BASENAME".c", __LINE__, __func__, _errno); |
| 11895 | + goto _return; |
| 11896 | + } |
| 11897 | + |
| 11898 | + goto _return; |
| 11899 | + |
| 11900 | +_return: |
| 11901 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 11902 | + KBUILD_BASENAME".c", __func__); |
| 11903 | + |
| 11904 | + return _errno; |
| 11905 | +} |
| 11906 | +module_init(mac_load); |
| 11907 | + |
| 11908 | +static void __exit __cold mac_unload(void) |
| 11909 | +{ |
| 11910 | + pr_debug(KBUILD_MODNAME ": -> %s:%s()\n", |
| 11911 | + KBUILD_BASENAME".c", __func__); |
| 11912 | + |
| 11913 | + platform_driver_unregister(&mac_driver); |
| 11914 | + |
| 11915 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 11916 | + KBUILD_BASENAME".c", __func__); |
| 11917 | +} |
| 11918 | +module_exit(mac_unload); |
| 11919 | --- /dev/null |
| 11920 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/mac.h |
| 11921 | @@ -0,0 +1,135 @@ |
| 11922 | +/* Copyright 2008-2011 Freescale Semiconductor, Inc. |
| 11923 | + * |
| 11924 | + * Redistribution and use in source and binary forms, with or without |
| 11925 | + * modification, are permitted provided that the following conditions are met: |
| 11926 | + * * Redistributions of source code must retain the above copyright |
| 11927 | + * notice, this list of conditions and the following disclaimer. |
| 11928 | + * * Redistributions in binary form must reproduce the above copyright |
| 11929 | + * notice, this list of conditions and the following disclaimer in the |
| 11930 | + * documentation and/or other materials provided with the distribution. |
| 11931 | + * * Neither the name of Freescale Semiconductor nor the |
| 11932 | + * names of its contributors may be used to endorse or promote products |
| 11933 | + * derived from this software without specific prior written permission. |
| 11934 | + * |
| 11935 | + * |
| 11936 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 11937 | + * GNU General Public License ("GPL") as published by the Free Software |
| 11938 | + * Foundation, either version 2 of that License or (at your option) any |
| 11939 | + * later version. |
| 11940 | + * |
| 11941 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 11942 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 11943 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 11944 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 11945 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 11946 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 11947 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 11948 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 11949 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 11950 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 11951 | + */ |
| 11952 | + |
| 11953 | +#ifndef __MAC_H |
| 11954 | +#define __MAC_H |
| 11955 | + |
| 11956 | +#include <linux/device.h> /* struct device, BUS_ID_SIZE */ |
| 11957 | +#include <linux/if_ether.h> /* ETH_ALEN */ |
| 11958 | +#include <linux/phy.h> /* phy_interface_t, struct phy_device */ |
| 11959 | +#include <linux/list.h> |
| 11960 | + |
| 11961 | +#include "lnxwrp_fsl_fman.h" /* struct port_device */ |
| 11962 | + |
| 11963 | +enum {DTSEC, XGMAC, MEMAC}; |
| 11964 | + |
| 11965 | +struct mac_device { |
| 11966 | + struct device *dev; |
| 11967 | + void *priv; |
| 11968 | + uint8_t cell_index; |
| 11969 | + struct resource *res; |
| 11970 | + void __iomem *vaddr; |
| 11971 | + uint8_t addr[ETH_ALEN]; |
| 11972 | + bool promisc; |
| 11973 | + |
| 11974 | + struct fm *fm_dev; |
| 11975 | + struct fm_port *port_dev[2]; |
| 11976 | + |
| 11977 | + phy_interface_t phy_if; |
| 11978 | + u32 if_support; |
| 11979 | + bool link; |
| 11980 | + bool half_duplex; |
| 11981 | + uint16_t speed; |
| 11982 | + uint16_t max_speed; |
| 11983 | + struct device_node *phy_node; |
| 11984 | + char fixed_bus_id[MII_BUS_ID_SIZE + 3]; |
| 11985 | + struct device_node *tbi_node; |
| 11986 | + struct phy_device *phy_dev; |
| 11987 | + void *fm; |
| 11988 | + /* List of multicast addresses */ |
| 11989 | + struct list_head mc_addr_list; |
| 11990 | + struct fixed_phy_status *fixed_link; |
| 11991 | + |
| 11992 | + bool autoneg_pause; |
| 11993 | + bool rx_pause_req; |
| 11994 | + bool tx_pause_req; |
| 11995 | + bool rx_pause_active; |
| 11996 | + bool tx_pause_active; |
| 11997 | + |
| 11998 | + struct fm_mac_dev *(*get_mac_handle)(struct mac_device *mac_dev); |
| 11999 | + int (*init_phy)(struct net_device *net_dev, struct mac_device *mac_dev); |
| 12000 | + int (*init)(struct mac_device *mac_dev); |
| 12001 | + int (*start)(struct mac_device *mac_dev); |
| 12002 | + int (*stop)(struct mac_device *mac_dev); |
| 12003 | + int (*set_promisc)(struct fm_mac_dev *fm_mac_dev, bool enable); |
| 12004 | + int (*change_addr)(struct fm_mac_dev *fm_mac_dev, uint8_t *addr); |
| 12005 | + int (*set_multi)(struct net_device *net_dev, |
| 12006 | + struct mac_device *mac_dev); |
| 12007 | + int (*uninit)(struct fm_mac_dev *fm_mac_dev); |
| 12008 | + int (*ptp_enable)(struct fm_mac_dev *fm_mac_dev); |
| 12009 | + int (*ptp_disable)(struct fm_mac_dev *fm_mac_dev); |
| 12010 | + int (*set_rx_pause)(struct fm_mac_dev *fm_mac_dev, bool en); |
| 12011 | + int (*set_tx_pause)(struct fm_mac_dev *fm_mac_dev, bool en); |
| 12012 | + int (*fm_rtc_enable)(struct fm *fm_dev); |
| 12013 | + int (*fm_rtc_disable)(struct fm *fm_dev); |
| 12014 | + int (*fm_rtc_get_cnt)(struct fm *fm_dev, uint64_t *ts); |
| 12015 | + int (*fm_rtc_set_cnt)(struct fm *fm_dev, uint64_t ts); |
| 12016 | + int (*fm_rtc_get_drift)(struct fm *fm_dev, uint32_t *drift); |
| 12017 | + int (*fm_rtc_set_drift)(struct fm *fm_dev, uint32_t drift); |
| 12018 | + int (*fm_rtc_set_alarm)(struct fm *fm_dev, uint32_t id, uint64_t time); |
| 12019 | + int (*fm_rtc_set_fiper)(struct fm *fm_dev, uint32_t id, |
| 12020 | + uint64_t fiper); |
| 12021 | +#ifdef CONFIG_PTP_1588_CLOCK_DPAA |
| 12022 | + int (*fm_rtc_enable_interrupt)(struct fm *fm_dev, uint32_t events); |
| 12023 | + int (*fm_rtc_disable_interrupt)(struct fm *fm_dev, uint32_t events); |
| 12024 | +#endif |
| 12025 | + int (*set_wol)(struct fm_port *port, struct fm_mac_dev *fm_mac_dev, |
| 12026 | + bool en); |
| 12027 | + int (*dump_mac_regs)(struct mac_device *h_mac, char *buf, int nn); |
| 12028 | + int (*dump_mac_rx_stats)(struct mac_device *h_mac, char *buf, int nn); |
| 12029 | + int (*dump_mac_tx_stats)(struct mac_device *h_mac, char *buf, int nn); |
| 12030 | +}; |
| 12031 | + |
| 12032 | +struct mac_address { |
| 12033 | + uint8_t addr[ETH_ALEN]; |
| 12034 | + struct list_head list; |
| 12035 | +}; |
| 12036 | + |
| 12037 | +#define get_fm_handle(net_dev) \ |
| 12038 | + (((struct dpa_priv_s *)netdev_priv(net_dev))->mac_dev->fm_dev) |
| 12039 | + |
| 12040 | +#define for_each_port_device(i, port_dev) \ |
| 12041 | + for (i = 0; i < ARRAY_SIZE(port_dev); i++) |
| 12042 | + |
| 12043 | +static inline __attribute((nonnull)) void *macdev_priv( |
| 12044 | + const struct mac_device *mac_dev) |
| 12045 | +{ |
| 12046 | + return (void *)mac_dev + sizeof(*mac_dev); |
| 12047 | +} |
| 12048 | + |
| 12049 | +extern const char *mac_driver_description; |
| 12050 | +extern const size_t mac_sizeof_priv[]; |
| 12051 | +extern void (*const mac_setup[])(struct mac_device *mac_dev); |
| 12052 | + |
| 12053 | +int set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx); |
| 12054 | +void get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause, bool *tx_pause); |
| 12055 | + |
| 12056 | +#endif /* __MAC_H */ |
| 12057 | --- /dev/null |
| 12058 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/offline_port.c |
| 12059 | @@ -0,0 +1,848 @@ |
| 12060 | +/* Copyright 2011-2012 Freescale Semiconductor Inc. |
| 12061 | + * |
| 12062 | + * Redistribution and use in source and binary forms, with or without |
| 12063 | + * modification, are permitted provided that the following conditions are met: |
| 12064 | + * * Redistributions of source code must retain the above copyright |
| 12065 | + * notice, this list of conditions and the following disclaimer. |
| 12066 | + * * Redistributions in binary form must reproduce the above copyright |
| 12067 | + * notice, this list of conditions and the following disclaimer in the |
| 12068 | + * documentation and/or other materials provided with the distribution. |
| 12069 | + * * Neither the name of Freescale Semiconductor nor the |
| 12070 | + * names of its contributors may be used to endorse or promote products |
| 12071 | + * derived from this software without specific prior written permission. |
| 12072 | + * |
| 12073 | + * |
| 12074 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 12075 | + * GNU General Public License ("GPL") as published by the Free Software |
| 12076 | + * Foundation, either version 2 of that License or (at your option) any |
| 12077 | + * later version. |
| 12078 | + * |
| 12079 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 12080 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 12081 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 12082 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 12083 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 12084 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 12085 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 12086 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 12087 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 12088 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 12089 | + */ |
| 12090 | + |
| 12091 | +/* Offline Parsing / Host Command port driver for FSL QorIQ FMan. |
| 12092 | + * Validates device-tree configuration and sets up the offline ports. |
| 12093 | + */ |
| 12094 | + |
| 12095 | +#ifdef CONFIG_FSL_DPAA_ETH_DEBUG |
| 12096 | +#define pr_fmt(fmt) \ |
| 12097 | + KBUILD_MODNAME ": %s:%hu:%s() " fmt, \ |
| 12098 | + KBUILD_BASENAME".c", __LINE__, __func__ |
| 12099 | +#else |
| 12100 | +#define pr_fmt(fmt) \ |
| 12101 | + KBUILD_MODNAME ": " fmt |
| 12102 | +#endif |
| 12103 | + |
| 12104 | + |
| 12105 | +#include <linux/init.h> |
| 12106 | +#include <linux/module.h> |
| 12107 | +#include <linux/of_platform.h> |
| 12108 | +#include <linux/fsl_qman.h> |
| 12109 | + |
| 12110 | +#include "offline_port.h" |
| 12111 | +#include "dpaa_eth.h" |
| 12112 | +#include "dpaa_eth_common.h" |
| 12113 | + |
| 12114 | +#define OH_MOD_DESCRIPTION "FSL FMan Offline Parsing port driver" |
| 12115 | +/* Manip extra space and data alignment for fragmentation */ |
| 12116 | +#define FRAG_MANIP_SPACE 128 |
| 12117 | +#define FRAG_DATA_ALIGN 64 |
| 12118 | + |
| 12119 | + |
| 12120 | +MODULE_LICENSE("Dual BSD/GPL"); |
| 12121 | +MODULE_AUTHOR("Bogdan Hamciuc <bogdan.hamciuc@freescale.com>"); |
| 12122 | +MODULE_DESCRIPTION(OH_MOD_DESCRIPTION); |
| 12123 | + |
| 12124 | + |
| 12125 | +static const struct of_device_id oh_port_match_table[] = { |
| 12126 | + { |
| 12127 | + .compatible = "fsl,dpa-oh" |
| 12128 | + }, |
| 12129 | + { |
| 12130 | + .compatible = "fsl,dpa-oh-shared" |
| 12131 | + }, |
| 12132 | + {} |
| 12133 | +}; |
| 12134 | +MODULE_DEVICE_TABLE(of, oh_port_match_table); |
| 12135 | + |
| 12136 | +#ifdef CONFIG_PM |
| 12137 | + |
| 12138 | +static int oh_suspend(struct device *dev) |
| 12139 | +{ |
| 12140 | + struct dpa_oh_config_s *oh_config; |
| 12141 | + |
| 12142 | + oh_config = dev_get_drvdata(dev); |
| 12143 | + return fm_port_suspend(oh_config->oh_port); |
| 12144 | +} |
| 12145 | + |
| 12146 | +static int oh_resume(struct device *dev) |
| 12147 | +{ |
| 12148 | + struct dpa_oh_config_s *oh_config; |
| 12149 | + |
| 12150 | + oh_config = dev_get_drvdata(dev); |
| 12151 | + return fm_port_resume(oh_config->oh_port); |
| 12152 | +} |
| 12153 | + |
| 12154 | +static const struct dev_pm_ops oh_pm_ops = { |
| 12155 | + .suspend = oh_suspend, |
| 12156 | + .resume = oh_resume, |
| 12157 | +}; |
| 12158 | + |
| 12159 | +#define OH_PM_OPS (&oh_pm_ops) |
| 12160 | + |
| 12161 | +#else /* CONFIG_PM */ |
| 12162 | + |
| 12163 | +#define OH_PM_OPS NULL |
| 12164 | + |
| 12165 | +#endif /* CONFIG_PM */ |
| 12166 | + |
| 12167 | +/* Creates Frame Queues */ |
| 12168 | +static uint32_t oh_fq_create(struct qman_fq *fq, |
| 12169 | + uint32_t fq_id, uint16_t channel, |
| 12170 | + uint16_t wq_id) |
| 12171 | +{ |
| 12172 | + struct qm_mcc_initfq fq_opts; |
| 12173 | + uint32_t create_flags, init_flags; |
| 12174 | + uint32_t ret = 0; |
| 12175 | + |
| 12176 | + if (fq == NULL) |
| 12177 | + return 1; |
| 12178 | + |
| 12179 | + /* Set flags for FQ create */ |
| 12180 | + create_flags = QMAN_FQ_FLAG_LOCKED | QMAN_FQ_FLAG_TO_DCPORTAL; |
| 12181 | + |
| 12182 | + /* Create frame queue */ |
| 12183 | + ret = qman_create_fq(fq_id, create_flags, fq); |
| 12184 | + if (ret != 0) |
| 12185 | + return 1; |
| 12186 | + |
| 12187 | + /* Set flags for FQ init */ |
| 12188 | + init_flags = QMAN_INITFQ_FLAG_SCHED; |
| 12189 | + |
| 12190 | + /* Set FQ init options. Specify destination WQ ID and channel */ |
| 12191 | + fq_opts.we_mask = QM_INITFQ_WE_DESTWQ; |
| 12192 | + fq_opts.fqd.dest.wq = wq_id; |
| 12193 | + fq_opts.fqd.dest.channel = channel; |
| 12194 | + |
| 12195 | + /* Initialize frame queue */ |
| 12196 | + ret = qman_init_fq(fq, init_flags, &fq_opts); |
| 12197 | + if (ret != 0) { |
| 12198 | + qman_destroy_fq(fq, 0); |
| 12199 | + return 1; |
| 12200 | + } |
| 12201 | + |
| 12202 | + return 0; |
| 12203 | +} |
| 12204 | + |
| 12205 | +static void dump_fq(struct device *dev, int fqid, uint16_t channel) |
| 12206 | +{ |
| 12207 | + if (channel) { |
| 12208 | + /* display fqs with a valid (!= 0) destination channel */ |
| 12209 | + dev_info(dev, "FQ ID:%d Channel ID:%d\n", fqid, channel); |
| 12210 | + } |
| 12211 | +} |
| 12212 | + |
| 12213 | +static void dump_fq_duple(struct device *dev, struct qman_fq *fqs, |
| 12214 | + int fqs_count, uint16_t channel_id) |
| 12215 | +{ |
| 12216 | + int i; |
| 12217 | + for (i = 0; i < fqs_count; i++) |
| 12218 | + dump_fq(dev, (fqs + i)->fqid, channel_id); |
| 12219 | +} |
| 12220 | + |
| 12221 | +static void dump_oh_config(struct device *dev, struct dpa_oh_config_s *conf) |
| 12222 | +{ |
| 12223 | + struct list_head *fq_list; |
| 12224 | + struct fq_duple *fqd; |
| 12225 | + int i; |
| 12226 | + |
| 12227 | + dev_info(dev, "Default egress frame queue: %d\n", conf->default_fqid); |
| 12228 | + dev_info(dev, "Default error frame queue: %d\n", conf->error_fqid); |
| 12229 | + |
| 12230 | + /* TX queues (old initialization) */ |
| 12231 | + dev_info(dev, "Initialized queues:"); |
| 12232 | + for (i = 0; i < conf->egress_cnt; i++) |
| 12233 | + dump_fq_duple(dev, conf->egress_fqs, conf->egress_cnt, |
| 12234 | + conf->channel); |
| 12235 | + |
| 12236 | + /* initialized ingress queues */ |
| 12237 | + list_for_each(fq_list, &conf->fqs_ingress_list) { |
| 12238 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12239 | + dump_fq_duple(dev, fqd->fqs, fqd->fqs_count, fqd->channel_id); |
| 12240 | + } |
| 12241 | + |
| 12242 | + /* initialized egress queues */ |
| 12243 | + list_for_each(fq_list, &conf->fqs_egress_list) { |
| 12244 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12245 | + dump_fq_duple(dev, fqd->fqs, fqd->fqs_count, fqd->channel_id); |
| 12246 | + } |
| 12247 | +} |
| 12248 | + |
| 12249 | +/* Destroys Frame Queues */ |
| 12250 | +static void oh_fq_destroy(struct qman_fq *fq) |
| 12251 | +{ |
| 12252 | + int _errno = 0; |
| 12253 | + |
| 12254 | + _errno = qman_retire_fq(fq, NULL); |
| 12255 | + if (unlikely(_errno < 0)) |
| 12256 | + pr_err(KBUILD_MODNAME": %s:%hu:%s(): qman_retire_fq(%u)=%d\n", |
| 12257 | + KBUILD_BASENAME".c", __LINE__, __func__, |
| 12258 | + qman_fq_fqid(fq), _errno); |
| 12259 | + |
| 12260 | + _errno = qman_oos_fq(fq); |
| 12261 | + if (unlikely(_errno < 0)) { |
| 12262 | + pr_err(KBUILD_MODNAME": %s:%hu:%s(): qman_oos_fq(%u)=%d\n", |
| 12263 | + KBUILD_BASENAME".c", __LINE__, __func__, |
| 12264 | + qman_fq_fqid(fq), _errno); |
| 12265 | + } |
| 12266 | + |
| 12267 | + qman_destroy_fq(fq, 0); |
| 12268 | +} |
| 12269 | + |
| 12270 | +/* Allocation code for the OH port's PCD frame queues */ |
| 12271 | +static int __cold oh_alloc_pcd_fqids(struct device *dev, |
| 12272 | + uint32_t num, |
| 12273 | + uint8_t alignment, |
| 12274 | + uint32_t *base_fqid) |
| 12275 | +{ |
| 12276 | + dev_crit(dev, "callback not implemented!\n"); |
| 12277 | + BUG(); |
| 12278 | + |
| 12279 | + return 0; |
| 12280 | +} |
| 12281 | + |
| 12282 | +static int __cold oh_free_pcd_fqids(struct device *dev, uint32_t base_fqid) |
| 12283 | +{ |
| 12284 | + dev_crit(dev, "callback not implemented!\n"); |
| 12285 | + BUG(); |
| 12286 | + |
| 12287 | + return 0; |
| 12288 | +} |
| 12289 | + |
| 12290 | +static void oh_set_buffer_layout(struct fm_port *port, |
| 12291 | + struct dpa_buffer_layout_s *layout) |
| 12292 | +{ |
| 12293 | + struct fm_port_params params; |
| 12294 | + |
| 12295 | + layout->priv_data_size = DPA_TX_PRIV_DATA_SIZE; |
| 12296 | + layout->parse_results = true; |
| 12297 | + layout->hash_results = true; |
| 12298 | + layout->time_stamp = false; |
| 12299 | + |
| 12300 | + fm_port_get_buff_layout_ext_params(port, ¶ms); |
| 12301 | + layout->manip_extra_space = params.manip_extra_space; |
| 12302 | + layout->data_align = params.data_align; |
| 12303 | +} |
| 12304 | + |
| 12305 | +static int |
| 12306 | +oh_port_probe(struct platform_device *_of_dev) |
| 12307 | +{ |
| 12308 | + struct device *dpa_oh_dev; |
| 12309 | + struct device_node *dpa_oh_node; |
| 12310 | + int lenp, _errno = 0, fq_idx, duple_idx; |
| 12311 | + int n_size, i, j, ret, duples_count; |
| 12312 | + struct platform_device *oh_of_dev; |
| 12313 | + struct device_node *oh_node, *bpool_node = NULL, *root_node; |
| 12314 | + struct device *oh_dev; |
| 12315 | + struct dpa_oh_config_s *oh_config = NULL; |
| 12316 | + const __be32 *oh_all_queues; |
| 12317 | + const __be32 *channel_ids; |
| 12318 | + const __be32 *oh_tx_queues; |
| 12319 | + uint32_t queues_count; |
| 12320 | + uint32_t crt_fqid_base; |
| 12321 | + uint32_t crt_fq_count; |
| 12322 | + bool frag_enabled = false; |
| 12323 | + struct fm_port_params oh_port_tx_params; |
| 12324 | + struct fm_port_pcd_param oh_port_pcd_params; |
| 12325 | + struct dpa_buffer_layout_s buf_layout; |
| 12326 | + |
| 12327 | + /* True if the current partition owns the OH port. */ |
| 12328 | + bool init_oh_port; |
| 12329 | + |
| 12330 | + const struct of_device_id *match; |
| 12331 | + int crt_ext_pools_count; |
| 12332 | + u32 ext_pool_size; |
| 12333 | + u32 port_id; |
| 12334 | + u32 channel_id; |
| 12335 | + |
| 12336 | + int channel_ids_count; |
| 12337 | + int channel_idx; |
| 12338 | + struct fq_duple *fqd; |
| 12339 | + struct list_head *fq_list, *fq_list_tmp; |
| 12340 | + |
| 12341 | + const __be32 *bpool_cfg; |
| 12342 | + uint32_t bpid; |
| 12343 | + |
| 12344 | + memset(&oh_port_tx_params, 0, sizeof(oh_port_tx_params)); |
| 12345 | + dpa_oh_dev = &_of_dev->dev; |
| 12346 | + dpa_oh_node = dpa_oh_dev->of_node; |
| 12347 | + BUG_ON(dpa_oh_node == NULL); |
| 12348 | + |
| 12349 | + match = of_match_device(oh_port_match_table, dpa_oh_dev); |
| 12350 | + if (!match) |
| 12351 | + return -EINVAL; |
| 12352 | + |
| 12353 | + dev_dbg(dpa_oh_dev, "Probing OH port...\n"); |
| 12354 | + |
| 12355 | + /* Find the referenced OH node */ |
| 12356 | + oh_node = of_parse_phandle(dpa_oh_node, "fsl,fman-oh-port", 0); |
| 12357 | + if (oh_node == NULL) { |
| 12358 | + dev_err(dpa_oh_dev, |
| 12359 | + "Can't find OH node referenced from node %s\n", |
| 12360 | + dpa_oh_node->full_name); |
| 12361 | + return -EINVAL; |
| 12362 | + } |
| 12363 | + dev_info(dpa_oh_dev, "Found OH node handle compatible with %s\n", |
| 12364 | + match->compatible); |
| 12365 | + |
| 12366 | + _errno = of_property_read_u32(oh_node, "cell-index", &port_id); |
| 12367 | + if (_errno) { |
| 12368 | + dev_err(dpa_oh_dev, "No port id found in node %s\n", |
| 12369 | + dpa_oh_node->full_name); |
| 12370 | + goto return_kfree; |
| 12371 | + } |
| 12372 | + |
| 12373 | + _errno = of_property_read_u32(oh_node, "fsl,qman-channel-id", |
| 12374 | + &channel_id); |
| 12375 | + if (_errno) { |
| 12376 | + dev_err(dpa_oh_dev, "No channel id found in node %s\n", |
| 12377 | + dpa_oh_node->full_name); |
| 12378 | + goto return_kfree; |
| 12379 | + } |
| 12380 | + |
| 12381 | + oh_of_dev = of_find_device_by_node(oh_node); |
| 12382 | + BUG_ON(oh_of_dev == NULL); |
| 12383 | + oh_dev = &oh_of_dev->dev; |
| 12384 | + |
| 12385 | + /* The OH port must be initialized exactly once. |
| 12386 | + * The following scenarios are of interest: |
| 12387 | + * - the node is Linux-private (will always initialize it); |
| 12388 | + * - the node is shared between two Linux partitions |
| 12389 | + * (only one of them will initialize it); |
| 12390 | + * - the node is shared between a Linux and a LWE partition |
| 12391 | + * (Linux will initialize it) - "fsl,dpa-oh-shared" |
| 12392 | + */ |
| 12393 | + |
| 12394 | + /* Check if the current partition owns the OH port |
| 12395 | + * and ought to initialize it. It may be the case that we leave this |
| 12396 | + * to another (also Linux) partition. |
| 12397 | + */ |
| 12398 | + init_oh_port = strcmp(match->compatible, "fsl,dpa-oh-shared"); |
| 12399 | + |
| 12400 | + /* If we aren't the "owner" of the OH node, we're done here. */ |
| 12401 | + if (!init_oh_port) { |
| 12402 | + dev_dbg(dpa_oh_dev, |
| 12403 | + "Not owning the shared OH port %s, will not initialize it.\n", |
| 12404 | + oh_node->full_name); |
| 12405 | + of_node_put(oh_node); |
| 12406 | + return 0; |
| 12407 | + } |
| 12408 | + |
| 12409 | + /* Allocate OH dev private data */ |
| 12410 | + oh_config = devm_kzalloc(dpa_oh_dev, sizeof(*oh_config), GFP_KERNEL); |
| 12411 | + if (oh_config == NULL) { |
| 12412 | + dev_err(dpa_oh_dev, |
| 12413 | + "Can't allocate private data for OH node %s referenced from node %s!\n", |
| 12414 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12415 | + _errno = -ENOMEM; |
| 12416 | + goto return_kfree; |
| 12417 | + } |
| 12418 | + |
| 12419 | + INIT_LIST_HEAD(&oh_config->fqs_ingress_list); |
| 12420 | + INIT_LIST_HEAD(&oh_config->fqs_egress_list); |
| 12421 | + |
| 12422 | + /* FQs that enter OH port */ |
| 12423 | + lenp = 0; |
| 12424 | + oh_all_queues = of_get_property(dpa_oh_node, |
| 12425 | + "fsl,qman-frame-queues-ingress", &lenp); |
| 12426 | + if (lenp % (2 * sizeof(*oh_all_queues))) { |
| 12427 | + dev_warn(dpa_oh_dev, |
| 12428 | + "Wrong ingress queues format for OH node %s referenced from node %s!\n", |
| 12429 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12430 | + /* just ignore the last unpaired value */ |
| 12431 | + } |
| 12432 | + |
| 12433 | + duples_count = lenp / (2 * sizeof(*oh_all_queues)); |
| 12434 | + dev_err(dpa_oh_dev, "Allocating %d ingress frame queues duples\n", |
| 12435 | + duples_count); |
| 12436 | + for (duple_idx = 0; duple_idx < duples_count; duple_idx++) { |
| 12437 | + crt_fqid_base = be32_to_cpu(oh_all_queues[2 * duple_idx]); |
| 12438 | + crt_fq_count = be32_to_cpu(oh_all_queues[2 * duple_idx + 1]); |
| 12439 | + |
| 12440 | + fqd = devm_kzalloc(dpa_oh_dev, |
| 12441 | + sizeof(struct fq_duple), GFP_KERNEL); |
| 12442 | + if (!fqd) { |
| 12443 | + dev_err(dpa_oh_dev, "Can't allocate structures for ingress frame queues for OH node %s referenced from node %s!\n", |
| 12444 | + oh_node->full_name, |
| 12445 | + dpa_oh_node->full_name); |
| 12446 | + _errno = -ENOMEM; |
| 12447 | + goto return_kfree; |
| 12448 | + } |
| 12449 | + |
| 12450 | + fqd->fqs = devm_kzalloc(dpa_oh_dev, |
| 12451 | + crt_fq_count * sizeof(struct qman_fq), |
| 12452 | + GFP_KERNEL); |
| 12453 | + if (!fqd->fqs) { |
| 12454 | + dev_err(dpa_oh_dev, "Can't allocate structures for ingress frame queues for OH node %s referenced from node %s!\n", |
| 12455 | + oh_node->full_name, |
| 12456 | + dpa_oh_node->full_name); |
| 12457 | + _errno = -ENOMEM; |
| 12458 | + goto return_kfree; |
| 12459 | + } |
| 12460 | + |
| 12461 | + for (j = 0; j < crt_fq_count; j++) |
| 12462 | + (fqd->fqs + j)->fqid = crt_fqid_base + j; |
| 12463 | + fqd->fqs_count = crt_fq_count; |
| 12464 | + fqd->channel_id = (uint16_t)channel_id; |
| 12465 | + list_add(&fqd->fq_list, &oh_config->fqs_ingress_list); |
| 12466 | + } |
| 12467 | + |
| 12468 | + /* create the ingress queues */ |
| 12469 | + list_for_each(fq_list, &oh_config->fqs_ingress_list) { |
| 12470 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12471 | + |
| 12472 | + for (j = 0; j < fqd->fqs_count; j++) { |
| 12473 | + ret = oh_fq_create(fqd->fqs + j, |
| 12474 | + (fqd->fqs + j)->fqid, |
| 12475 | + fqd->channel_id, 3); |
| 12476 | + if (ret != 0) { |
| 12477 | + dev_err(dpa_oh_dev, "Unable to create ingress frame queue %d for OH node %s referenced from node %s!\n", |
| 12478 | + (fqd->fqs + j)->fqid, |
| 12479 | + oh_node->full_name, |
| 12480 | + dpa_oh_node->full_name); |
| 12481 | + _errno = -EINVAL; |
| 12482 | + goto return_kfree; |
| 12483 | + } |
| 12484 | + } |
| 12485 | + } |
| 12486 | + |
| 12487 | + /* FQs that exit OH port */ |
| 12488 | + lenp = 0; |
| 12489 | + oh_all_queues = of_get_property(dpa_oh_node, |
| 12490 | + "fsl,qman-frame-queues-egress", &lenp); |
| 12491 | + if (lenp % (2 * sizeof(*oh_all_queues))) { |
| 12492 | + dev_warn(dpa_oh_dev, |
| 12493 | + "Wrong egress queues format for OH node %s referenced from node %s!\n", |
| 12494 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12495 | + /* just ignore the last unpaired value */ |
| 12496 | + } |
| 12497 | + |
| 12498 | + duples_count = lenp / (2 * sizeof(*oh_all_queues)); |
| 12499 | + dev_dbg(dpa_oh_dev, "Allocating %d egress frame queues duples\n", |
| 12500 | + duples_count); |
| 12501 | + for (duple_idx = 0; duple_idx < duples_count; duple_idx++) { |
| 12502 | + crt_fqid_base = be32_to_cpu(oh_all_queues[2 * duple_idx]); |
| 12503 | + crt_fq_count = be32_to_cpu(oh_all_queues[2 * duple_idx + 1]); |
| 12504 | + |
| 12505 | + fqd = devm_kzalloc(dpa_oh_dev, |
| 12506 | + sizeof(struct fq_duple), GFP_KERNEL); |
| 12507 | + if (!fqd) { |
| 12508 | + dev_err(dpa_oh_dev, "Can't allocate structures for egress frame queues for OH node %s referenced from node %s!\n", |
| 12509 | + oh_node->full_name, |
| 12510 | + dpa_oh_node->full_name); |
| 12511 | + _errno = -ENOMEM; |
| 12512 | + goto return_kfree; |
| 12513 | + } |
| 12514 | + |
| 12515 | + fqd->fqs = devm_kzalloc(dpa_oh_dev, |
| 12516 | + crt_fq_count * sizeof(struct qman_fq), |
| 12517 | + GFP_KERNEL); |
| 12518 | + if (!fqd->fqs) { |
| 12519 | + dev_err(dpa_oh_dev, |
| 12520 | + "Can't allocate structures for egress frame queues for OH node %s referenced from node %s!\n", |
| 12521 | + oh_node->full_name, |
| 12522 | + dpa_oh_node->full_name); |
| 12523 | + _errno = -ENOMEM; |
| 12524 | + goto return_kfree; |
| 12525 | + } |
| 12526 | + |
| 12527 | + for (j = 0; j < crt_fq_count; j++) |
| 12528 | + (fqd->fqs + j)->fqid = crt_fqid_base + j; |
| 12529 | + fqd->fqs_count = crt_fq_count; |
| 12530 | + /* channel ID is specified in another attribute */ |
| 12531 | + fqd->channel_id = 0; |
| 12532 | + list_add_tail(&fqd->fq_list, &oh_config->fqs_egress_list); |
| 12533 | + |
| 12534 | + /* allocate the queue */ |
| 12535 | + |
| 12536 | + } |
| 12537 | + |
| 12538 | + /* channel_ids for FQs that exit OH port */ |
| 12539 | + lenp = 0; |
| 12540 | + channel_ids = of_get_property(dpa_oh_node, |
| 12541 | + "fsl,qman-channel-ids-egress", &lenp); |
| 12542 | + |
| 12543 | + channel_ids_count = lenp / (sizeof(*channel_ids)); |
| 12544 | + if (channel_ids_count != duples_count) { |
| 12545 | + dev_warn(dpa_oh_dev, |
| 12546 | + "Not all egress queues have a channel id for OH node %s referenced from node %s!\n", |
| 12547 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12548 | + /* just ignore the queues that do not have a Channel ID */ |
| 12549 | + } |
| 12550 | + |
| 12551 | + channel_idx = 0; |
| 12552 | + list_for_each(fq_list, &oh_config->fqs_egress_list) { |
| 12553 | + if (channel_idx + 1 > channel_ids_count) |
| 12554 | + break; |
| 12555 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12556 | + fqd->channel_id = |
| 12557 | + (uint16_t)be32_to_cpu(channel_ids[channel_idx++]); |
| 12558 | + } |
| 12559 | + |
| 12560 | + /* create egress queues */ |
| 12561 | + list_for_each(fq_list, &oh_config->fqs_egress_list) { |
| 12562 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12563 | + |
| 12564 | + if (fqd->channel_id == 0) { |
| 12565 | + /* missing channel id in dts */ |
| 12566 | + continue; |
| 12567 | + } |
| 12568 | + |
| 12569 | + for (j = 0; j < fqd->fqs_count; j++) { |
| 12570 | + ret = oh_fq_create(fqd->fqs + j, |
| 12571 | + (fqd->fqs + j)->fqid, |
| 12572 | + fqd->channel_id, 3); |
| 12573 | + if (ret != 0) { |
| 12574 | + dev_err(dpa_oh_dev, "Unable to create egress frame queue %d for OH node %s referenced from node %s!\n", |
| 12575 | + (fqd->fqs + j)->fqid, |
| 12576 | + oh_node->full_name, |
| 12577 | + dpa_oh_node->full_name); |
| 12578 | + _errno = -EINVAL; |
| 12579 | + goto return_kfree; |
| 12580 | + } |
| 12581 | + } |
| 12582 | + } |
| 12583 | + |
| 12584 | + /* Read FQ ids/nums for the DPA OH node */ |
| 12585 | + oh_all_queues = of_get_property(dpa_oh_node, |
| 12586 | + "fsl,qman-frame-queues-oh", &lenp); |
| 12587 | + if (oh_all_queues == NULL) { |
| 12588 | + dev_err(dpa_oh_dev, |
| 12589 | + "No frame queues have been defined for OH node %s referenced from node %s\n", |
| 12590 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12591 | + _errno = -EINVAL; |
| 12592 | + goto return_kfree; |
| 12593 | + } |
| 12594 | + |
| 12595 | + /* Check that the OH error and default FQs are there */ |
| 12596 | + BUG_ON(lenp % (2 * sizeof(*oh_all_queues))); |
| 12597 | + queues_count = lenp / (2 * sizeof(*oh_all_queues)); |
| 12598 | + if (queues_count != 2) { |
| 12599 | + dev_err(dpa_oh_dev, |
| 12600 | + "Error and Default queues must be defined for OH node %s referenced from node %s\n", |
| 12601 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12602 | + _errno = -EINVAL; |
| 12603 | + goto return_kfree; |
| 12604 | + } |
| 12605 | + |
| 12606 | + /* Read the FQIDs defined for this OH port */ |
| 12607 | + dev_dbg(dpa_oh_dev, "Reading %d queues...\n", queues_count); |
| 12608 | + fq_idx = 0; |
| 12609 | + |
| 12610 | + /* Error FQID - must be present */ |
| 12611 | + crt_fqid_base = be32_to_cpu(oh_all_queues[fq_idx++]); |
| 12612 | + crt_fq_count = be32_to_cpu(oh_all_queues[fq_idx++]); |
| 12613 | + if (crt_fq_count != 1) { |
| 12614 | + dev_err(dpa_oh_dev, |
| 12615 | + "Only 1 Error FQ allowed in OH node %s referenced from node %s (read: %d FQIDs).\n", |
| 12616 | + oh_node->full_name, dpa_oh_node->full_name, |
| 12617 | + crt_fq_count); |
| 12618 | + _errno = -EINVAL; |
| 12619 | + goto return_kfree; |
| 12620 | + } |
| 12621 | + oh_config->error_fqid = crt_fqid_base; |
| 12622 | + dev_dbg(dpa_oh_dev, "Read Error FQID 0x%x for OH port %s.\n", |
| 12623 | + oh_config->error_fqid, oh_node->full_name); |
| 12624 | + |
| 12625 | + /* Default FQID - must be present */ |
| 12626 | + crt_fqid_base = be32_to_cpu(oh_all_queues[fq_idx++]); |
| 12627 | + crt_fq_count = be32_to_cpu(oh_all_queues[fq_idx++]); |
| 12628 | + if (crt_fq_count != 1) { |
| 12629 | + dev_err(dpa_oh_dev, |
| 12630 | + "Only 1 Default FQ allowed in OH node %s referenced from %s (read: %d FQIDs).\n", |
| 12631 | + oh_node->full_name, dpa_oh_node->full_name, |
| 12632 | + crt_fq_count); |
| 12633 | + _errno = -EINVAL; |
| 12634 | + goto return_kfree; |
| 12635 | + } |
| 12636 | + oh_config->default_fqid = crt_fqid_base; |
| 12637 | + dev_dbg(dpa_oh_dev, "Read Default FQID 0x%x for OH port %s.\n", |
| 12638 | + oh_config->default_fqid, oh_node->full_name); |
| 12639 | + |
| 12640 | + /* TX FQID - presence is optional */ |
| 12641 | + oh_tx_queues = of_get_property(dpa_oh_node, "fsl,qman-frame-queues-tx", |
| 12642 | + &lenp); |
| 12643 | + if (oh_tx_queues == NULL) { |
| 12644 | + dev_dbg(dpa_oh_dev, |
| 12645 | + "No tx queues have been defined for OH node %s referenced from node %s\n", |
| 12646 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12647 | + goto config_port; |
| 12648 | + } |
| 12649 | + |
| 12650 | + /* Check that queues-tx has only a base and a count defined */ |
| 12651 | + BUG_ON(lenp % (2 * sizeof(*oh_tx_queues))); |
| 12652 | + queues_count = lenp / (2 * sizeof(*oh_tx_queues)); |
| 12653 | + if (queues_count != 1) { |
| 12654 | + dev_err(dpa_oh_dev, |
| 12655 | + "TX queues must be defined in only one <base count> tuple for OH node %s referenced from node %s\n", |
| 12656 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12657 | + _errno = -EINVAL; |
| 12658 | + goto return_kfree; |
| 12659 | + } |
| 12660 | + |
| 12661 | + fq_idx = 0; |
| 12662 | + crt_fqid_base = be32_to_cpu(oh_tx_queues[fq_idx++]); |
| 12663 | + crt_fq_count = be32_to_cpu(oh_tx_queues[fq_idx++]); |
| 12664 | + oh_config->egress_cnt = crt_fq_count; |
| 12665 | + |
| 12666 | + /* Allocate TX queues */ |
| 12667 | + dev_dbg(dpa_oh_dev, "Allocating %d queues for TX...\n", crt_fq_count); |
| 12668 | + oh_config->egress_fqs = devm_kzalloc(dpa_oh_dev, |
| 12669 | + crt_fq_count * sizeof(struct qman_fq), GFP_KERNEL); |
| 12670 | + if (oh_config->egress_fqs == NULL) { |
| 12671 | + dev_err(dpa_oh_dev, |
| 12672 | + "Can't allocate private data for TX queues for OH node %s referenced from node %s!\n", |
| 12673 | + oh_node->full_name, dpa_oh_node->full_name); |
| 12674 | + _errno = -ENOMEM; |
| 12675 | + goto return_kfree; |
| 12676 | + } |
| 12677 | + |
| 12678 | + /* Create TX queues */ |
| 12679 | + for (i = 0; i < crt_fq_count; i++) { |
| 12680 | + ret = oh_fq_create(oh_config->egress_fqs + i, |
| 12681 | + crt_fqid_base + i, (uint16_t)channel_id, 3); |
| 12682 | + if (ret != 0) { |
| 12683 | + dev_err(dpa_oh_dev, |
| 12684 | + "Unable to create TX frame queue %d for OH node %s referenced from node %s!\n", |
| 12685 | + crt_fqid_base + i, oh_node->full_name, |
| 12686 | + dpa_oh_node->full_name); |
| 12687 | + _errno = -EINVAL; |
| 12688 | + goto return_kfree; |
| 12689 | + } |
| 12690 | + } |
| 12691 | + |
| 12692 | +config_port: |
| 12693 | + /* Get a handle to the fm_port so we can set |
| 12694 | + * its configuration params |
| 12695 | + */ |
| 12696 | + oh_config->oh_port = fm_port_bind(oh_dev); |
| 12697 | + if (oh_config->oh_port == NULL) { |
| 12698 | + dev_err(dpa_oh_dev, "NULL drvdata from fm port dev %s!\n", |
| 12699 | + oh_node->full_name); |
| 12700 | + _errno = -EINVAL; |
| 12701 | + goto return_kfree; |
| 12702 | + } |
| 12703 | + |
| 12704 | + oh_set_buffer_layout(oh_config->oh_port, &buf_layout); |
| 12705 | + |
| 12706 | + /* read the pool handlers */ |
| 12707 | + crt_ext_pools_count = of_count_phandle_with_args(dpa_oh_node, |
| 12708 | + "fsl,bman-buffer-pools", NULL); |
| 12709 | + if (crt_ext_pools_count <= 0) { |
| 12710 | + dev_info(dpa_oh_dev, |
| 12711 | + "OH port %s has no buffer pool. Fragmentation will not be enabled\n", |
| 12712 | + oh_node->full_name); |
| 12713 | + goto init_port; |
| 12714 | + } |
| 12715 | + |
| 12716 | + /* used for reading ext_pool_size*/ |
| 12717 | + root_node = of_find_node_by_path("/"); |
| 12718 | + if (root_node == NULL) { |
| 12719 | + dev_err(dpa_oh_dev, "of_find_node_by_path(/) failed\n"); |
| 12720 | + _errno = -EINVAL; |
| 12721 | + goto return_kfree; |
| 12722 | + } |
| 12723 | + |
| 12724 | + n_size = of_n_size_cells(root_node); |
| 12725 | + of_node_put(root_node); |
| 12726 | + |
| 12727 | + dev_dbg(dpa_oh_dev, "OH port number of pools = %d\n", |
| 12728 | + crt_ext_pools_count); |
| 12729 | + |
| 12730 | + oh_port_tx_params.num_pools = (uint8_t)crt_ext_pools_count; |
| 12731 | + |
| 12732 | + for (i = 0; i < crt_ext_pools_count; i++) { |
| 12733 | + bpool_node = of_parse_phandle(dpa_oh_node, |
| 12734 | + "fsl,bman-buffer-pools", i); |
| 12735 | + if (bpool_node == NULL) { |
| 12736 | + dev_err(dpa_oh_dev, "Invalid Buffer pool node\n"); |
| 12737 | + _errno = -EINVAL; |
| 12738 | + goto return_kfree; |
| 12739 | + } |
| 12740 | + |
| 12741 | + _errno = of_property_read_u32(bpool_node, "fsl,bpid", &bpid); |
| 12742 | + if (_errno) { |
| 12743 | + dev_err(dpa_oh_dev, "Invalid Buffer Pool ID\n"); |
| 12744 | + _errno = -EINVAL; |
| 12745 | + goto return_kfree; |
| 12746 | + } |
| 12747 | + |
| 12748 | + oh_port_tx_params.pool_param[i].id = (uint8_t)bpid; |
| 12749 | + dev_dbg(dpa_oh_dev, "OH port bpool id = %u\n", bpid); |
| 12750 | + |
| 12751 | + bpool_cfg = of_get_property(bpool_node, |
| 12752 | + "fsl,bpool-ethernet-cfg", &lenp); |
| 12753 | + if (bpool_cfg == NULL) { |
| 12754 | + dev_err(dpa_oh_dev, "Invalid Buffer pool config params\n"); |
| 12755 | + _errno = -EINVAL; |
| 12756 | + goto return_kfree; |
| 12757 | + } |
| 12758 | + |
| 12759 | + ext_pool_size = of_read_number(bpool_cfg + n_size, n_size); |
| 12760 | + oh_port_tx_params.pool_param[i].size = (uint16_t)ext_pool_size; |
| 12761 | + dev_dbg(dpa_oh_dev, "OH port bpool size = %u\n", |
| 12762 | + ext_pool_size); |
| 12763 | + of_node_put(bpool_node); |
| 12764 | + |
| 12765 | + } |
| 12766 | + |
| 12767 | + if (buf_layout.data_align != FRAG_DATA_ALIGN || |
| 12768 | + buf_layout.manip_extra_space != FRAG_MANIP_SPACE) |
| 12769 | + goto init_port; |
| 12770 | + |
| 12771 | + frag_enabled = true; |
| 12772 | + dev_info(dpa_oh_dev, "IP Fragmentation enabled for OH port %d", |
| 12773 | + port_id); |
| 12774 | + |
| 12775 | +init_port: |
| 12776 | + of_node_put(oh_node); |
| 12777 | + /* Set Tx params */ |
| 12778 | + dpaa_eth_init_port(tx, oh_config->oh_port, oh_port_tx_params, |
| 12779 | + oh_config->error_fqid, oh_config->default_fqid, (&buf_layout), |
| 12780 | + frag_enabled); |
| 12781 | + /* Set PCD params */ |
| 12782 | + oh_port_pcd_params.cba = oh_alloc_pcd_fqids; |
| 12783 | + oh_port_pcd_params.cbf = oh_free_pcd_fqids; |
| 12784 | + oh_port_pcd_params.dev = dpa_oh_dev; |
| 12785 | + fm_port_pcd_bind(oh_config->oh_port, &oh_port_pcd_params); |
| 12786 | + |
| 12787 | + dev_set_drvdata(dpa_oh_dev, oh_config); |
| 12788 | + |
| 12789 | + /* Enable the OH port */ |
| 12790 | + _errno = fm_port_enable(oh_config->oh_port); |
| 12791 | + if (_errno) |
| 12792 | + goto return_kfree; |
| 12793 | + |
| 12794 | + dev_info(dpa_oh_dev, "OH port %s enabled.\n", oh_node->full_name); |
| 12795 | + |
| 12796 | + /* print of all referenced & created queues */ |
| 12797 | + dump_oh_config(dpa_oh_dev, oh_config); |
| 12798 | + |
| 12799 | + return 0; |
| 12800 | + |
| 12801 | +return_kfree: |
| 12802 | + if (bpool_node) |
| 12803 | + of_node_put(bpool_node); |
| 12804 | + if (oh_node) |
| 12805 | + of_node_put(oh_node); |
| 12806 | + if (oh_config && oh_config->egress_fqs) |
| 12807 | + devm_kfree(dpa_oh_dev, oh_config->egress_fqs); |
| 12808 | + |
| 12809 | + list_for_each_safe(fq_list, fq_list_tmp, &oh_config->fqs_ingress_list) { |
| 12810 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12811 | + list_del(fq_list); |
| 12812 | + devm_kfree(dpa_oh_dev, fqd->fqs); |
| 12813 | + devm_kfree(dpa_oh_dev, fqd); |
| 12814 | + } |
| 12815 | + |
| 12816 | + list_for_each_safe(fq_list, fq_list_tmp, &oh_config->fqs_egress_list) { |
| 12817 | + fqd = list_entry(fq_list, struct fq_duple, fq_list); |
| 12818 | + list_del(fq_list); |
| 12819 | + devm_kfree(dpa_oh_dev, fqd->fqs); |
| 12820 | + devm_kfree(dpa_oh_dev, fqd); |
| 12821 | + } |
| 12822 | + |
| 12823 | + devm_kfree(dpa_oh_dev, oh_config); |
| 12824 | + return _errno; |
| 12825 | +} |
| 12826 | + |
| 12827 | +static int __cold oh_port_remove(struct platform_device *_of_dev) |
| 12828 | +{ |
| 12829 | + int _errno = 0, i; |
| 12830 | + struct dpa_oh_config_s *oh_config; |
| 12831 | + |
| 12832 | + pr_info("Removing OH port...\n"); |
| 12833 | + |
| 12834 | + oh_config = dev_get_drvdata(&_of_dev->dev); |
| 12835 | + if (oh_config == NULL) { |
| 12836 | + pr_err(KBUILD_MODNAME |
| 12837 | + ": %s:%hu:%s(): No OH config in device private data!\n", |
| 12838 | + KBUILD_BASENAME".c", __LINE__, __func__); |
| 12839 | + _errno = -ENODEV; |
| 12840 | + goto return_error; |
| 12841 | + } |
| 12842 | + |
| 12843 | + if (oh_config->egress_fqs) |
| 12844 | + for (i = 0; i < oh_config->egress_cnt; i++) |
| 12845 | + oh_fq_destroy(oh_config->egress_fqs + i); |
| 12846 | + |
| 12847 | + if (oh_config->oh_port == NULL) { |
| 12848 | + pr_err(KBUILD_MODNAME |
| 12849 | + ": %s:%hu:%s(): No fm port in device private data!\n", |
| 12850 | + KBUILD_BASENAME".c", __LINE__, __func__); |
| 12851 | + _errno = -EINVAL; |
| 12852 | + goto free_egress_fqs; |
| 12853 | + } |
| 12854 | + |
| 12855 | + _errno = fm_port_disable(oh_config->oh_port); |
| 12856 | + |
| 12857 | +free_egress_fqs: |
| 12858 | + if (oh_config->egress_fqs) |
| 12859 | + devm_kfree(&_of_dev->dev, oh_config->egress_fqs); |
| 12860 | + devm_kfree(&_of_dev->dev, oh_config); |
| 12861 | + dev_set_drvdata(&_of_dev->dev, NULL); |
| 12862 | + |
| 12863 | +return_error: |
| 12864 | + return _errno; |
| 12865 | +} |
| 12866 | + |
| 12867 | +static struct platform_driver oh_port_driver = { |
| 12868 | + .driver = { |
| 12869 | + .name = KBUILD_MODNAME, |
| 12870 | + .of_match_table = oh_port_match_table, |
| 12871 | + .owner = THIS_MODULE, |
| 12872 | + .pm = OH_PM_OPS, |
| 12873 | + }, |
| 12874 | + .probe = oh_port_probe, |
| 12875 | + .remove = oh_port_remove |
| 12876 | +}; |
| 12877 | + |
| 12878 | +static int __init __cold oh_port_load(void) |
| 12879 | +{ |
| 12880 | + int _errno; |
| 12881 | + |
| 12882 | + pr_info(OH_MOD_DESCRIPTION "\n"); |
| 12883 | + |
| 12884 | + _errno = platform_driver_register(&oh_port_driver); |
| 12885 | + if (_errno < 0) { |
| 12886 | + pr_err(KBUILD_MODNAME |
| 12887 | + ": %s:%hu:%s(): platform_driver_register() = %d\n", |
| 12888 | + KBUILD_BASENAME".c", __LINE__, __func__, _errno); |
| 12889 | + } |
| 12890 | + |
| 12891 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 12892 | + KBUILD_BASENAME".c", __func__); |
| 12893 | + return _errno; |
| 12894 | +} |
| 12895 | +module_init(oh_port_load); |
| 12896 | + |
| 12897 | +static void __exit __cold oh_port_unload(void) |
| 12898 | +{ |
| 12899 | + pr_debug(KBUILD_MODNAME ": -> %s:%s()\n", |
| 12900 | + KBUILD_BASENAME".c", __func__); |
| 12901 | + |
| 12902 | + platform_driver_unregister(&oh_port_driver); |
| 12903 | + |
| 12904 | + pr_debug(KBUILD_MODNAME ": %s:%s() ->\n", |
| 12905 | + KBUILD_BASENAME".c", __func__); |
| 12906 | +} |
| 12907 | +module_exit(oh_port_unload); |
| 12908 | --- /dev/null |
| 12909 | +++ b/drivers/net/ethernet/freescale/sdk_dpaa/offline_port.h |
| 12910 | @@ -0,0 +1,59 @@ |
| 12911 | +/* Copyright 2011 Freescale Semiconductor Inc. |
| 12912 | + * |
| 12913 | + * Redistribution and use in source and binary forms, with or without |
| 12914 | + * modification, are permitted provided that the following conditions are met: |
| 12915 | + * * Redistributions of source code must retain the above copyright |
| 12916 | + * notice, this list of conditions and the following disclaimer. |
| 12917 | + * * Redistributions in binary form must reproduce the above copyright |
| 12918 | + * notice, this list of conditions and the following disclaimer in the |
| 12919 | + * documentation and/or other materials provided with the distribution. |
| 12920 | + * * Neither the name of Freescale Semiconductor nor the |
| 12921 | + * names of its contributors may be used to endorse or promote products |
| 12922 | + * derived from this software without specific prior written permission. |
| 12923 | + * |
| 12924 | + * |
| 12925 | + * ALTERNATIVELY, this software may be distributed under the terms of the |
| 12926 | + * GNU General Public License ("GPL") as published by the Free Software |
| 12927 | + * Foundation, either version 2 of that License or (at your option) any |
| 12928 | + * later version. |
| 12929 | + * |
| 12930 | + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
| 12931 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 12932 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 12933 | + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
| 12934 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 12935 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 12936 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 12937 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 12938 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 12939 | + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 12940 | + */ |
| 12941 | + |
| 12942 | +#ifndef __OFFLINE_PORT_H |
| 12943 | +#define __OFFLINE_PORT_H |
| 12944 | + |
| 12945 | +struct fm_port; |
| 12946 | +struct qman_fq; |
| 12947 | + |
| 12948 | +/* fqs are defined in duples (base_fq, fq_count) */ |
| 12949 | +struct fq_duple { |
| 12950 | + struct qman_fq *fqs; |
| 12951 | + int fqs_count; |
| 12952 | + uint16_t channel_id; |
| 12953 | + struct list_head fq_list; |
| 12954 | +}; |
| 12955 | + |
| 12956 | +/* OH port configuration */ |
| 12957 | +struct dpa_oh_config_s { |
| 12958 | + uint32_t error_fqid; |
| 12959 | + uint32_t default_fqid; |
| 12960 | + struct fm_port *oh_port; |
| 12961 | + uint32_t egress_cnt; |
| 12962 | + struct qman_fq *egress_fqs; |
| 12963 | + uint16_t channel; |
| 12964 | + |
| 12965 | + struct list_head fqs_ingress_list; |
| 12966 | + struct list_head fqs_egress_list; |
| 12967 | +}; |
| 12968 | + |
| 12969 | +#endif /* __OFFLINE_PORT_H */ |