ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/net/ethernet/broadcom/b44.c b/marvell/linux/drivers/net/ethernet/broadcom/b44.c
new file mode 100644
index 0000000..f326798
--- /dev/null
+++ b/marvell/linux/drivers/net/ethernet/broadcom/b44.c
@@ -0,0 +1,2619 @@
+/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
+ *
+ * Copyright (C) 2002 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
+ * Copyright (C) 2006 Broadcom Corporation.
+ * Copyright (C) 2007 Michael Buesch <m@bues.ch>
+ * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Distribute under GPL.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/ssb/ssb.h>
+#include <linux/slab.h>
+#include <linux/phy.h>
+
+#include <linux/uaccess.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+
+#include "b44.h"
+
+#define DRV_MODULE_NAME "b44"
+#define DRV_MODULE_VERSION "2.0"
+#define DRV_DESCRIPTION "Broadcom 44xx/47xx 10/100 PCI ethernet driver"
+
+#define B44_DEF_MSG_ENABLE \
+ (NETIF_MSG_DRV | \
+ NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | \
+ NETIF_MSG_TIMER | \
+ NETIF_MSG_IFDOWN | \
+ NETIF_MSG_IFUP | \
+ NETIF_MSG_RX_ERR | \
+ NETIF_MSG_TX_ERR)
+
+/* length of time before we decide the hardware is borked,
+ * and dev->tx_timeout() should be called to fix the problem
+ */
+#define B44_TX_TIMEOUT (5 * HZ)
+
+/* hardware minimum and maximum for a single frame's data payload */
+#define B44_MIN_MTU ETH_ZLEN
+#define B44_MAX_MTU ETH_DATA_LEN
+
+#define B44_RX_RING_SIZE 512
+#define B44_DEF_RX_RING_PENDING 200
+#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
+ B44_RX_RING_SIZE)
+#define B44_TX_RING_SIZE 512
+#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
+#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
+ B44_TX_RING_SIZE)
+
+#define TX_RING_GAP(BP) \
+ (B44_TX_RING_SIZE - (BP)->tx_pending)
+#define TX_BUFFS_AVAIL(BP) \
+ (((BP)->tx_cons <= (BP)->tx_prod) ? \
+ (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
+ (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
+#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
+
+#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
+#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
+
+/* minimum number of free TX descriptors required to wake up TX process */
+#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
+
+/* b44 internal pattern match filter info */
+#define B44_PATTERN_BASE 0x400
+#define B44_PATTERN_SIZE 0x80
+#define B44_PMASK_BASE 0x600
+#define B44_PMASK_SIZE 0x10
+#define B44_MAX_PATTERNS 16
+#define B44_ETHIPV6UDP_HLEN 62
+#define B44_ETHIPV4UDP_HLEN 42
+
+MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
+module_param(b44_debug, int, 0);
+MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
+
+
+#ifdef CONFIG_B44_PCI
+static const struct pci_device_id b44_pci_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
+ { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
+ { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
+ { 0 } /* terminate list with empty entry */
+};
+MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
+
+static struct pci_driver b44_pci_driver = {
+ .name = DRV_MODULE_NAME,
+ .id_table = b44_pci_tbl,
+};
+#endif /* CONFIG_B44_PCI */
+
+static const struct ssb_device_id b44_ssb_tbl[] = {
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
+ {},
+};
+MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
+
+static void b44_halt(struct b44 *);
+static void b44_init_rings(struct b44 *);
+
+#define B44_FULL_RESET 1
+#define B44_FULL_RESET_SKIP_PHY 2
+#define B44_PARTIAL_RESET 3
+#define B44_CHIP_RESET_FULL 4
+#define B44_CHIP_RESET_PARTIAL 5
+
+static void b44_init_hw(struct b44 *, int);
+
+static int dma_desc_sync_size;
+static int instance;
+
+static const char b44_gstrings[][ETH_GSTRING_LEN] = {
+#define _B44(x...) # x,
+B44_STAT_REG_DECLARE
+#undef _B44
+};
+
+static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
+ dma_addr_t dma_base,
+ unsigned long offset,
+ enum dma_data_direction dir)
+{
+ dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
+ dma_desc_sync_size, dir);
+}
+
+static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
+ dma_addr_t dma_base,
+ unsigned long offset,
+ enum dma_data_direction dir)
+{
+ dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
+ dma_desc_sync_size, dir);
+}
+
+static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
+{
+ return ssb_read32(bp->sdev, reg);
+}
+
+static inline void bw32(const struct b44 *bp,
+ unsigned long reg, unsigned long val)
+{
+ ssb_write32(bp->sdev, reg, val);
+}
+
+static int b44_wait_bit(struct b44 *bp, unsigned long reg,
+ u32 bit, unsigned long timeout, const int clear)
+{
+ unsigned long i;
+
+ for (i = 0; i < timeout; i++) {
+ u32 val = br32(bp, reg);
+
+ if (clear && !(val & bit))
+ break;
+ if (!clear && (val & bit))
+ break;
+ udelay(10);
+ }
+ if (i == timeout) {
+ if (net_ratelimit())
+ netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n",
+ bit, reg, clear ? "clear" : "set");
+
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
+{
+ u32 val;
+
+ bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
+ (index << CAM_CTRL_INDEX_SHIFT)));
+
+ b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
+
+ val = br32(bp, B44_CAM_DATA_LO);
+
+ data[2] = (val >> 24) & 0xFF;
+ data[3] = (val >> 16) & 0xFF;
+ data[4] = (val >> 8) & 0xFF;
+ data[5] = (val >> 0) & 0xFF;
+
+ val = br32(bp, B44_CAM_DATA_HI);
+
+ data[0] = (val >> 8) & 0xFF;
+ data[1] = (val >> 0) & 0xFF;
+}
+
+static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
+{
+ u32 val;
+
+ val = ((u32) data[2]) << 24;
+ val |= ((u32) data[3]) << 16;
+ val |= ((u32) data[4]) << 8;
+ val |= ((u32) data[5]) << 0;
+ bw32(bp, B44_CAM_DATA_LO, val);
+ val = (CAM_DATA_HI_VALID |
+ (((u32) data[0]) << 8) |
+ (((u32) data[1]) << 0));
+ bw32(bp, B44_CAM_DATA_HI, val);
+ bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
+ (index << CAM_CTRL_INDEX_SHIFT)));
+ b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
+}
+
+static inline void __b44_disable_ints(struct b44 *bp)
+{
+ bw32(bp, B44_IMASK, 0);
+}
+
+static void b44_disable_ints(struct b44 *bp)
+{
+ __b44_disable_ints(bp);
+
+ /* Flush posted writes. */
+ br32(bp, B44_IMASK);
+}
+
+static void b44_enable_ints(struct b44 *bp)
+{
+ bw32(bp, B44_IMASK, bp->imask);
+}
+
+static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
+{
+ int err;
+
+ bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
+ bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
+ (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
+ (phy_addr << MDIO_DATA_PMD_SHIFT) |
+ (reg << MDIO_DATA_RA_SHIFT) |
+ (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
+ err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
+ *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
+
+ return err;
+}
+
+static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
+{
+ bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
+ bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
+ (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
+ (phy_addr << MDIO_DATA_PMD_SHIFT) |
+ (reg << MDIO_DATA_RA_SHIFT) |
+ (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
+ (val & MDIO_DATA_DATA)));
+ return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
+}
+
+static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
+{
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ return 0;
+
+ return __b44_readphy(bp, bp->phy_addr, reg, val);
+}
+
+static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
+{
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ return 0;
+
+ return __b44_writephy(bp, bp->phy_addr, reg, val);
+}
+
+/* miilib interface */
+static int b44_mdio_read_mii(struct net_device *dev, int phy_id, int location)
+{
+ u32 val;
+ struct b44 *bp = netdev_priv(dev);
+ int rc = __b44_readphy(bp, phy_id, location, &val);
+ if (rc)
+ return 0xffffffff;
+ return val;
+}
+
+static void b44_mdio_write_mii(struct net_device *dev, int phy_id, int location,
+ int val)
+{
+ struct b44 *bp = netdev_priv(dev);
+ __b44_writephy(bp, phy_id, location, val);
+}
+
+static int b44_mdio_read_phylib(struct mii_bus *bus, int phy_id, int location)
+{
+ u32 val;
+ struct b44 *bp = bus->priv;
+ int rc = __b44_readphy(bp, phy_id, location, &val);
+ if (rc)
+ return 0xffffffff;
+ return val;
+}
+
+static int b44_mdio_write_phylib(struct mii_bus *bus, int phy_id, int location,
+ u16 val)
+{
+ struct b44 *bp = bus->priv;
+ return __b44_writephy(bp, phy_id, location, val);
+}
+
+static int b44_phy_reset(struct b44 *bp)
+{
+ u32 val;
+ int err;
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ return 0;
+ err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
+ if (err)
+ return err;
+ udelay(100);
+ err = b44_readphy(bp, MII_BMCR, &val);
+ if (!err) {
+ if (val & BMCR_RESET) {
+ netdev_err(bp->dev, "PHY Reset would not complete\n");
+ err = -ENODEV;
+ }
+ }
+
+ return err;
+}
+
+static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
+{
+ u32 val;
+
+ bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
+ bp->flags |= pause_flags;
+
+ val = br32(bp, B44_RXCONFIG);
+ if (pause_flags & B44_FLAG_RX_PAUSE)
+ val |= RXCONFIG_FLOW;
+ else
+ val &= ~RXCONFIG_FLOW;
+ bw32(bp, B44_RXCONFIG, val);
+
+ val = br32(bp, B44_MAC_FLOW);
+ if (pause_flags & B44_FLAG_TX_PAUSE)
+ val |= (MAC_FLOW_PAUSE_ENAB |
+ (0xc0 & MAC_FLOW_RX_HI_WATER));
+ else
+ val &= ~MAC_FLOW_PAUSE_ENAB;
+ bw32(bp, B44_MAC_FLOW, val);
+}
+
+static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
+{
+ u32 pause_enab = 0;
+
+ /* The driver supports only rx pause by default because
+ the b44 mac tx pause mechanism generates excessive
+ pause frames.
+ Use ethtool to turn on b44 tx pause if necessary.
+ */
+ if ((local & ADVERTISE_PAUSE_CAP) &&
+ (local & ADVERTISE_PAUSE_ASYM)){
+ if ((remote & LPA_PAUSE_ASYM) &&
+ !(remote & LPA_PAUSE_CAP))
+ pause_enab |= B44_FLAG_RX_PAUSE;
+ }
+
+ __b44_set_flow_ctrl(bp, pause_enab);
+}
+
+#ifdef CONFIG_BCM47XX
+#include <linux/bcm47xx_nvram.h>
+static void b44_wap54g10_workaround(struct b44 *bp)
+{
+ char buf[20];
+ u32 val;
+ int err;
+
+ /*
+ * workaround for bad hardware design in Linksys WAP54G v1.0
+ * see https://dev.openwrt.org/ticket/146
+ * check and reset bit "isolate"
+ */
+ if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
+ return;
+ if (simple_strtoul(buf, NULL, 0) == 2) {
+ err = __b44_readphy(bp, 0, MII_BMCR, &val);
+ if (err)
+ goto error;
+ if (!(val & BMCR_ISOLATE))
+ return;
+ val &= ~BMCR_ISOLATE;
+ err = __b44_writephy(bp, 0, MII_BMCR, val);
+ if (err)
+ goto error;
+ }
+ return;
+error:
+ pr_warn("PHY: cannot reset MII transceiver isolate bit\n");
+}
+#else
+static inline void b44_wap54g10_workaround(struct b44 *bp)
+{
+}
+#endif
+
+static int b44_setup_phy(struct b44 *bp)
+{
+ u32 val;
+ int err;
+
+ b44_wap54g10_workaround(bp);
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ return 0;
+ if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
+ goto out;
+ if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
+ val & MII_ALEDCTRL_ALLMSK)) != 0)
+ goto out;
+ if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
+ goto out;
+ if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
+ val | MII_TLEDCTRL_ENABLE)) != 0)
+ goto out;
+
+ if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
+ u32 adv = ADVERTISE_CSMA;
+
+ if (bp->flags & B44_FLAG_ADV_10HALF)
+ adv |= ADVERTISE_10HALF;
+ if (bp->flags & B44_FLAG_ADV_10FULL)
+ adv |= ADVERTISE_10FULL;
+ if (bp->flags & B44_FLAG_ADV_100HALF)
+ adv |= ADVERTISE_100HALF;
+ if (bp->flags & B44_FLAG_ADV_100FULL)
+ adv |= ADVERTISE_100FULL;
+
+ if (bp->flags & B44_FLAG_PAUSE_AUTO)
+ adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+
+ if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
+ goto out;
+ if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
+ BMCR_ANRESTART))) != 0)
+ goto out;
+ } else {
+ u32 bmcr;
+
+ if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
+ goto out;
+ bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
+ if (bp->flags & B44_FLAG_100_BASE_T)
+ bmcr |= BMCR_SPEED100;
+ if (bp->flags & B44_FLAG_FULL_DUPLEX)
+ bmcr |= BMCR_FULLDPLX;
+ if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
+ goto out;
+
+ /* Since we will not be negotiating there is no safe way
+ * to determine if the link partner supports flow control
+ * or not. So just disable it completely in this case.
+ */
+ b44_set_flow_ctrl(bp, 0, 0);
+ }
+
+out:
+ return err;
+}
+
+static void b44_stats_update(struct b44 *bp)
+{
+ unsigned long reg;
+ u64 *val;
+
+ val = &bp->hw_stats.tx_good_octets;
+ u64_stats_update_begin(&bp->hw_stats.syncp);
+
+ for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
+ *val++ += br32(bp, reg);
+ }
+
+ /* Pad */
+ reg += 8*4UL;
+
+ for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
+ *val++ += br32(bp, reg);
+ }
+
+ u64_stats_update_end(&bp->hw_stats.syncp);
+}
+
+static void b44_link_report(struct b44 *bp)
+{
+ if (!netif_carrier_ok(bp->dev)) {
+ netdev_info(bp->dev, "Link is down\n");
+ } else {
+ netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n",
+ (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
+ (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
+
+ netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n",
+ (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
+ (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
+ }
+}
+
+static void b44_check_phy(struct b44 *bp)
+{
+ u32 bmsr, aux;
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
+ bp->flags |= B44_FLAG_100_BASE_T;
+ if (!netif_carrier_ok(bp->dev)) {
+ u32 val = br32(bp, B44_TX_CTRL);
+ if (bp->flags & B44_FLAG_FULL_DUPLEX)
+ val |= TX_CTRL_DUPLEX;
+ else
+ val &= ~TX_CTRL_DUPLEX;
+ bw32(bp, B44_TX_CTRL, val);
+ netif_carrier_on(bp->dev);
+ b44_link_report(bp);
+ }
+ return;
+ }
+
+ if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
+ !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
+ (bmsr != 0xffff)) {
+ if (aux & MII_AUXCTRL_SPEED)
+ bp->flags |= B44_FLAG_100_BASE_T;
+ else
+ bp->flags &= ~B44_FLAG_100_BASE_T;
+ if (aux & MII_AUXCTRL_DUPLEX)
+ bp->flags |= B44_FLAG_FULL_DUPLEX;
+ else
+ bp->flags &= ~B44_FLAG_FULL_DUPLEX;
+
+ if (!netif_carrier_ok(bp->dev) &&
+ (bmsr & BMSR_LSTATUS)) {
+ u32 val = br32(bp, B44_TX_CTRL);
+ u32 local_adv, remote_adv;
+
+ if (bp->flags & B44_FLAG_FULL_DUPLEX)
+ val |= TX_CTRL_DUPLEX;
+ else
+ val &= ~TX_CTRL_DUPLEX;
+ bw32(bp, B44_TX_CTRL, val);
+
+ if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
+ !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
+ !b44_readphy(bp, MII_LPA, &remote_adv))
+ b44_set_flow_ctrl(bp, local_adv, remote_adv);
+
+ /* Link now up */
+ netif_carrier_on(bp->dev);
+ b44_link_report(bp);
+ } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
+ /* Link now down */
+ netif_carrier_off(bp->dev);
+ b44_link_report(bp);
+ }
+
+ if (bmsr & BMSR_RFAULT)
+ netdev_warn(bp->dev, "Remote fault detected in PHY\n");
+ if (bmsr & BMSR_JCD)
+ netdev_warn(bp->dev, "Jabber detected in PHY\n");
+ }
+}
+
+static void b44_timer(struct timer_list *t)
+{
+ struct b44 *bp = from_timer(bp, t, timer);
+
+ spin_lock_irq(&bp->lock);
+
+ b44_check_phy(bp);
+
+ b44_stats_update(bp);
+
+ spin_unlock_irq(&bp->lock);
+
+ mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
+}
+
+static void b44_tx(struct b44 *bp)
+{
+ u32 cur, cons;
+ unsigned bytes_compl = 0, pkts_compl = 0;
+
+ cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
+ cur /= sizeof(struct dma_desc);
+
+ /* XXX needs updating when NETIF_F_SG is supported */
+ for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
+ struct ring_info *rp = &bp->tx_buffers[cons];
+ struct sk_buff *skb = rp->skb;
+
+ BUG_ON(skb == NULL);
+
+ dma_unmap_single(bp->sdev->dma_dev,
+ rp->mapping,
+ skb->len,
+ DMA_TO_DEVICE);
+ rp->skb = NULL;
+
+ bytes_compl += skb->len;
+ pkts_compl++;
+
+ dev_consume_skb_irq(skb);
+ }
+
+ netdev_completed_queue(bp->dev, pkts_compl, bytes_compl);
+ bp->tx_cons = cons;
+ if (netif_queue_stopped(bp->dev) &&
+ TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
+ netif_wake_queue(bp->dev);
+
+ bw32(bp, B44_GPTIMER, 0);
+}
+
+/* Works like this. This chip writes a 'struct rx_header" 30 bytes
+ * before the DMA address you give it. So we allocate 30 more bytes
+ * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
+ * point the chip at 30 bytes past where the rx_header will go.
+ */
+static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
+{
+ struct dma_desc *dp;
+ struct ring_info *src_map, *map;
+ struct rx_header *rh;
+ struct sk_buff *skb;
+ dma_addr_t mapping;
+ int dest_idx;
+ u32 ctrl;
+
+ src_map = NULL;
+ if (src_idx >= 0)
+ src_map = &bp->rx_buffers[src_idx];
+ dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
+ map = &bp->rx_buffers[dest_idx];
+ skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
+ if (skb == NULL)
+ return -ENOMEM;
+
+ mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
+ RX_PKT_BUF_SZ,
+ DMA_FROM_DEVICE);
+
+ /* Hardware bug work-around, the chip is unable to do PCI DMA
+ to/from anything above 1GB :-( */
+ if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
+ mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
+ /* Sigh... */
+ if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
+ dma_unmap_single(bp->sdev->dma_dev, mapping,
+ RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ skb = alloc_skb(RX_PKT_BUF_SZ, GFP_ATOMIC | GFP_DMA);
+ if (skb == NULL)
+ return -ENOMEM;
+ mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
+ RX_PKT_BUF_SZ,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
+ mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
+ if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
+ dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ return -ENOMEM;
+ }
+ bp->force_copybreak = 1;
+ }
+
+ rh = (struct rx_header *) skb->data;
+
+ rh->len = 0;
+ rh->flags = 0;
+
+ map->skb = skb;
+ map->mapping = mapping;
+
+ if (src_map != NULL)
+ src_map->skb = NULL;
+
+ ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
+ if (dest_idx == (B44_RX_RING_SIZE - 1))
+ ctrl |= DESC_CTRL_EOT;
+
+ dp = &bp->rx_ring[dest_idx];
+ dp->ctrl = cpu_to_le32(ctrl);
+ dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
+
+ if (bp->flags & B44_FLAG_RX_RING_HACK)
+ b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
+ dest_idx * sizeof(*dp),
+ DMA_BIDIRECTIONAL);
+
+ return RX_PKT_BUF_SZ;
+}
+
+static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
+{
+ struct dma_desc *src_desc, *dest_desc;
+ struct ring_info *src_map, *dest_map;
+ struct rx_header *rh;
+ int dest_idx;
+ __le32 ctrl;
+
+ dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
+ dest_desc = &bp->rx_ring[dest_idx];
+ dest_map = &bp->rx_buffers[dest_idx];
+ src_desc = &bp->rx_ring[src_idx];
+ src_map = &bp->rx_buffers[src_idx];
+
+ dest_map->skb = src_map->skb;
+ rh = (struct rx_header *) src_map->skb->data;
+ rh->len = 0;
+ rh->flags = 0;
+ dest_map->mapping = src_map->mapping;
+
+ if (bp->flags & B44_FLAG_RX_RING_HACK)
+ b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
+ src_idx * sizeof(*src_desc),
+ DMA_BIDIRECTIONAL);
+
+ ctrl = src_desc->ctrl;
+ if (dest_idx == (B44_RX_RING_SIZE - 1))
+ ctrl |= cpu_to_le32(DESC_CTRL_EOT);
+ else
+ ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
+
+ dest_desc->ctrl = ctrl;
+ dest_desc->addr = src_desc->addr;
+
+ src_map->skb = NULL;
+
+ if (bp->flags & B44_FLAG_RX_RING_HACK)
+ b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
+ dest_idx * sizeof(*dest_desc),
+ DMA_BIDIRECTIONAL);
+
+ dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
+ RX_PKT_BUF_SZ,
+ DMA_FROM_DEVICE);
+}
+
+static int b44_rx(struct b44 *bp, int budget)
+{
+ int received;
+ u32 cons, prod;
+
+ received = 0;
+ prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
+ prod /= sizeof(struct dma_desc);
+ cons = bp->rx_cons;
+
+ while (cons != prod && budget > 0) {
+ struct ring_info *rp = &bp->rx_buffers[cons];
+ struct sk_buff *skb = rp->skb;
+ dma_addr_t map = rp->mapping;
+ struct rx_header *rh;
+ u16 len;
+
+ dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
+ RX_PKT_BUF_SZ,
+ DMA_FROM_DEVICE);
+ rh = (struct rx_header *) skb->data;
+ len = le16_to_cpu(rh->len);
+ if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
+ (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
+ drop_it:
+ b44_recycle_rx(bp, cons, bp->rx_prod);
+ drop_it_no_recycle:
+ bp->dev->stats.rx_dropped++;
+ goto next_pkt;
+ }
+
+ if (len == 0) {
+ int i = 0;
+
+ do {
+ udelay(2);
+ barrier();
+ len = le16_to_cpu(rh->len);
+ } while (len == 0 && i++ < 5);
+ if (len == 0)
+ goto drop_it;
+ }
+
+ /* Omit CRC. */
+ len -= 4;
+
+ if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
+ int skb_size;
+ skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
+ if (skb_size < 0)
+ goto drop_it;
+ dma_unmap_single(bp->sdev->dma_dev, map,
+ skb_size, DMA_FROM_DEVICE);
+ /* Leave out rx_header */
+ skb_put(skb, len + RX_PKT_OFFSET);
+ skb_pull(skb, RX_PKT_OFFSET);
+ } else {
+ struct sk_buff *copy_skb;
+
+ b44_recycle_rx(bp, cons, bp->rx_prod);
+ copy_skb = napi_alloc_skb(&bp->napi, len);
+ if (copy_skb == NULL)
+ goto drop_it_no_recycle;
+
+ skb_put(copy_skb, len);
+ /* DMA sync done above, copy just the actual packet */
+ skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
+ copy_skb->data, len);
+ skb = copy_skb;
+ }
+ skb_checksum_none_assert(skb);
+ skb->protocol = eth_type_trans(skb, bp->dev);
+ netif_receive_skb(skb);
+ received++;
+ budget--;
+ next_pkt:
+ bp->rx_prod = (bp->rx_prod + 1) &
+ (B44_RX_RING_SIZE - 1);
+ cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
+ }
+
+ bp->rx_cons = cons;
+ bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
+
+ return received;
+}
+
+static int b44_poll(struct napi_struct *napi, int budget)
+{
+ struct b44 *bp = container_of(napi, struct b44, napi);
+ int work_done;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
+ /* spin_lock(&bp->tx_lock); */
+ b44_tx(bp);
+ /* spin_unlock(&bp->tx_lock); */
+ }
+ if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */
+ bp->istat &= ~ISTAT_RFO;
+ b44_disable_ints(bp);
+ ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
+ netif_wake_queue(bp->dev);
+ }
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ work_done = 0;
+ if (bp->istat & ISTAT_RX)
+ work_done += b44_rx(bp, budget);
+
+ if (bp->istat & ISTAT_ERRORS) {
+ spin_lock_irqsave(&bp->lock, flags);
+ b44_halt(bp);
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
+ netif_wake_queue(bp->dev);
+ spin_unlock_irqrestore(&bp->lock, flags);
+ work_done = 0;
+ }
+
+ if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+ b44_enable_ints(bp);
+ }
+
+ return work_done;
+}
+
+static irqreturn_t b44_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct b44 *bp = netdev_priv(dev);
+ u32 istat, imask;
+ int handled = 0;
+
+ spin_lock(&bp->lock);
+
+ istat = br32(bp, B44_ISTAT);
+ imask = br32(bp, B44_IMASK);
+
+ /* The interrupt mask register controls which interrupt bits
+ * will actually raise an interrupt to the CPU when set by hw/firmware,
+ * but doesn't mask off the bits.
+ */
+ istat &= imask;
+ if (istat) {
+ handled = 1;
+
+ if (unlikely(!netif_running(dev))) {
+ netdev_info(dev, "late interrupt\n");
+ goto irq_ack;
+ }
+
+ if (napi_schedule_prep(&bp->napi)) {
+ /* NOTE: These writes are posted by the readback of
+ * the ISTAT register below.
+ */
+ bp->istat = istat;
+ __b44_disable_ints(bp);
+ __napi_schedule(&bp->napi);
+ }
+
+irq_ack:
+ bw32(bp, B44_ISTAT, istat);
+ br32(bp, B44_ISTAT);
+ }
+ spin_unlock(&bp->lock);
+ return IRQ_RETVAL(handled);
+}
+
+static void b44_tx_timeout(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ netdev_err(dev, "transmit timed out, resetting\n");
+
+ spin_lock_irq(&bp->lock);
+
+ b44_halt(bp);
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+
+ spin_unlock_irq(&bp->lock);
+
+ b44_enable_ints(bp);
+
+ netif_wake_queue(dev);
+}
+
+static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ int rc = NETDEV_TX_OK;
+ dma_addr_t mapping;
+ u32 len, entry, ctrl;
+ unsigned long flags;
+
+ len = skb->len;
+ spin_lock_irqsave(&bp->lock, flags);
+
+ /* This is a hard error, log it. */
+ if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
+ netif_stop_queue(dev);
+ netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
+ goto err_out;
+ }
+
+ mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
+ if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
+ struct sk_buff *bounce_skb;
+
+ /* Chip can't handle DMA to/from >1GB, use bounce buffer */
+ if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
+ dma_unmap_single(bp->sdev->dma_dev, mapping, len,
+ DMA_TO_DEVICE);
+
+ bounce_skb = alloc_skb(len, GFP_ATOMIC | GFP_DMA);
+ if (!bounce_skb)
+ goto err_out;
+
+ mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
+ len, DMA_TO_DEVICE);
+ if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
+ if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
+ dma_unmap_single(bp->sdev->dma_dev, mapping,
+ len, DMA_TO_DEVICE);
+ dev_kfree_skb_any(bounce_skb);
+ goto err_out;
+ }
+
+ skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
+ dev_consume_skb_any(skb);
+ skb = bounce_skb;
+ }
+
+ entry = bp->tx_prod;
+ bp->tx_buffers[entry].skb = skb;
+ bp->tx_buffers[entry].mapping = mapping;
+
+ ctrl = (len & DESC_CTRL_LEN);
+ ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
+ if (entry == (B44_TX_RING_SIZE - 1))
+ ctrl |= DESC_CTRL_EOT;
+
+ bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
+ bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
+
+ if (bp->flags & B44_FLAG_TX_RING_HACK)
+ b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
+ entry * sizeof(bp->tx_ring[0]),
+ DMA_TO_DEVICE);
+
+ entry = NEXT_TX(entry);
+
+ bp->tx_prod = entry;
+
+ wmb();
+
+ bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
+ if (bp->flags & B44_FLAG_BUGGY_TXPTR)
+ bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
+ if (bp->flags & B44_FLAG_REORDER_BUG)
+ br32(bp, B44_DMATX_PTR);
+
+ netdev_sent_queue(dev, skb->len);
+
+ if (TX_BUFFS_AVAIL(bp) < 1)
+ netif_stop_queue(dev);
+
+out_unlock:
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return rc;
+
+err_out:
+ rc = NETDEV_TX_BUSY;
+ goto out_unlock;
+}
+
+static int b44_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ if (!netif_running(dev)) {
+ /* We'll just catch it later when the
+ * device is up'd.
+ */
+ dev->mtu = new_mtu;
+ return 0;
+ }
+
+ spin_lock_irq(&bp->lock);
+ b44_halt(bp);
+ dev->mtu = new_mtu;
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+ spin_unlock_irq(&bp->lock);
+
+ b44_enable_ints(bp);
+
+ return 0;
+}
+
+/* Free up pending packets in all rx/tx rings.
+ *
+ * The chip has been shut down and the driver detached from
+ * the networking, so no interrupts or new tx packets will
+ * end up in the driver. bp->lock is not held and we are not
+ * in an interrupt context and thus may sleep.
+ */
+static void b44_free_rings(struct b44 *bp)
+{
+ struct ring_info *rp;
+ int i;
+
+ for (i = 0; i < B44_RX_RING_SIZE; i++) {
+ rp = &bp->rx_buffers[i];
+
+ if (rp->skb == NULL)
+ continue;
+ dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(rp->skb);
+ rp->skb = NULL;
+ }
+
+ /* XXX needs changes once NETIF_F_SG is set... */
+ for (i = 0; i < B44_TX_RING_SIZE; i++) {
+ rp = &bp->tx_buffers[i];
+
+ if (rp->skb == NULL)
+ continue;
+ dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
+ DMA_TO_DEVICE);
+ dev_kfree_skb_any(rp->skb);
+ rp->skb = NULL;
+ }
+}
+
+/* Initialize tx/rx rings for packet processing.
+ *
+ * The chip has been shut down and the driver detached from
+ * the networking, so no interrupts or new tx packets will
+ * end up in the driver.
+ */
+static void b44_init_rings(struct b44 *bp)
+{
+ int i;
+
+ b44_free_rings(bp);
+
+ memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
+ memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
+
+ if (bp->flags & B44_FLAG_RX_RING_HACK)
+ dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
+ DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
+
+ if (bp->flags & B44_FLAG_TX_RING_HACK)
+ dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
+ DMA_TABLE_BYTES, DMA_TO_DEVICE);
+
+ for (i = 0; i < bp->rx_pending; i++) {
+ if (b44_alloc_rx_skb(bp, -1, i) < 0)
+ break;
+ }
+}
+
+/*
+ * Must not be invoked with interrupt sources disabled and
+ * the hardware shutdown down.
+ */
+static void b44_free_consistent(struct b44 *bp)
+{
+ kfree(bp->rx_buffers);
+ bp->rx_buffers = NULL;
+ kfree(bp->tx_buffers);
+ bp->tx_buffers = NULL;
+ if (bp->rx_ring) {
+ if (bp->flags & B44_FLAG_RX_RING_HACK) {
+ dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
+ DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
+ kfree(bp->rx_ring);
+ } else
+ dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
+ bp->rx_ring, bp->rx_ring_dma);
+ bp->rx_ring = NULL;
+ bp->flags &= ~B44_FLAG_RX_RING_HACK;
+ }
+ if (bp->tx_ring) {
+ if (bp->flags & B44_FLAG_TX_RING_HACK) {
+ dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
+ DMA_TABLE_BYTES, DMA_TO_DEVICE);
+ kfree(bp->tx_ring);
+ } else
+ dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
+ bp->tx_ring, bp->tx_ring_dma);
+ bp->tx_ring = NULL;
+ bp->flags &= ~B44_FLAG_TX_RING_HACK;
+ }
+}
+
+/*
+ * Must not be invoked with interrupt sources disabled and
+ * the hardware shutdown down. Can sleep.
+ */
+static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
+{
+ int size;
+
+ size = B44_RX_RING_SIZE * sizeof(struct ring_info);
+ bp->rx_buffers = kzalloc(size, gfp);
+ if (!bp->rx_buffers)
+ goto out_err;
+
+ size = B44_TX_RING_SIZE * sizeof(struct ring_info);
+ bp->tx_buffers = kzalloc(size, gfp);
+ if (!bp->tx_buffers)
+ goto out_err;
+
+ size = DMA_TABLE_BYTES;
+ bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
+ &bp->rx_ring_dma, gfp);
+ if (!bp->rx_ring) {
+ /* Allocation may have failed due to pci_alloc_consistent
+ insisting on use of GFP_DMA, which is more restrictive
+ than necessary... */
+ struct dma_desc *rx_ring;
+ dma_addr_t rx_ring_dma;
+
+ rx_ring = kzalloc(size, gfp);
+ if (!rx_ring)
+ goto out_err;
+
+ rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
+ DMA_TABLE_BYTES,
+ DMA_BIDIRECTIONAL);
+
+ if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
+ rx_ring_dma + size > DMA_BIT_MASK(30)) {
+ kfree(rx_ring);
+ goto out_err;
+ }
+
+ bp->rx_ring = rx_ring;
+ bp->rx_ring_dma = rx_ring_dma;
+ bp->flags |= B44_FLAG_RX_RING_HACK;
+ }
+
+ bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
+ &bp->tx_ring_dma, gfp);
+ if (!bp->tx_ring) {
+ /* Allocation may have failed due to ssb_dma_alloc_consistent
+ insisting on use of GFP_DMA, which is more restrictive
+ than necessary... */
+ struct dma_desc *tx_ring;
+ dma_addr_t tx_ring_dma;
+
+ tx_ring = kzalloc(size, gfp);
+ if (!tx_ring)
+ goto out_err;
+
+ tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
+ DMA_TABLE_BYTES,
+ DMA_TO_DEVICE);
+
+ if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
+ tx_ring_dma + size > DMA_BIT_MASK(30)) {
+ kfree(tx_ring);
+ goto out_err;
+ }
+
+ bp->tx_ring = tx_ring;
+ bp->tx_ring_dma = tx_ring_dma;
+ bp->flags |= B44_FLAG_TX_RING_HACK;
+ }
+
+ return 0;
+
+out_err:
+ b44_free_consistent(bp);
+ return -ENOMEM;
+}
+
+/* bp->lock is held. */
+static void b44_clear_stats(struct b44 *bp)
+{
+ unsigned long reg;
+
+ bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
+ for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
+ br32(bp, reg);
+ for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
+ br32(bp, reg);
+}
+
+/* bp->lock is held. */
+static void b44_chip_reset(struct b44 *bp, int reset_kind)
+{
+ struct ssb_device *sdev = bp->sdev;
+ bool was_enabled;
+
+ was_enabled = ssb_device_is_enabled(bp->sdev);
+
+ ssb_device_enable(bp->sdev, 0);
+ ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
+
+ if (was_enabled) {
+ bw32(bp, B44_RCV_LAZY, 0);
+ bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
+ b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
+ bw32(bp, B44_DMATX_CTRL, 0);
+ bp->tx_prod = bp->tx_cons = 0;
+ if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
+ b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
+ 100, 0);
+ }
+ bw32(bp, B44_DMARX_CTRL, 0);
+ bp->rx_prod = bp->rx_cons = 0;
+ }
+
+ b44_clear_stats(bp);
+
+ /*
+ * Don't enable PHY if we are doing a partial reset
+ * we are probably going to power down
+ */
+ if (reset_kind == B44_CHIP_RESET_PARTIAL)
+ return;
+
+ switch (sdev->bus->bustype) {
+ case SSB_BUSTYPE_SSB:
+ bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
+ (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus),
+ B44_MDC_RATIO)
+ & MDIO_CTRL_MAXF_MASK)));
+ break;
+ case SSB_BUSTYPE_PCI:
+ bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
+ (0x0d & MDIO_CTRL_MAXF_MASK)));
+ break;
+ case SSB_BUSTYPE_PCMCIA:
+ case SSB_BUSTYPE_SDIO:
+ WARN_ON(1); /* A device with this bus does not exist. */
+ break;
+ }
+
+ br32(bp, B44_MDIO_CTRL);
+
+ if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
+ bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
+ br32(bp, B44_ENET_CTRL);
+ bp->flags |= B44_FLAG_EXTERNAL_PHY;
+ } else {
+ u32 val = br32(bp, B44_DEVCTRL);
+
+ if (val & DEVCTRL_EPR) {
+ bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
+ br32(bp, B44_DEVCTRL);
+ udelay(100);
+ }
+ bp->flags &= ~B44_FLAG_EXTERNAL_PHY;
+ }
+}
+
+/* bp->lock is held. */
+static void b44_halt(struct b44 *bp)
+{
+ b44_disable_ints(bp);
+ /* reset PHY */
+ b44_phy_reset(bp);
+ /* power down PHY */
+ netdev_info(bp->dev, "powering down PHY\n");
+ bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
+ /* now reset the chip, but without enabling the MAC&PHY
+ * part of it. This has to be done _after_ we shut down the PHY */
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ b44_chip_reset(bp, B44_CHIP_RESET_FULL);
+ else
+ b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
+}
+
+/* bp->lock is held. */
+static void __b44_set_mac_addr(struct b44 *bp)
+{
+ bw32(bp, B44_CAM_CTRL, 0);
+ if (!(bp->dev->flags & IFF_PROMISC)) {
+ u32 val;
+
+ __b44_cam_write(bp, bp->dev->dev_addr, 0);
+ val = br32(bp, B44_CAM_CTRL);
+ bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
+ }
+}
+
+static int b44_set_mac_addr(struct net_device *dev, void *p)
+{
+ struct b44 *bp = netdev_priv(dev);
+ struct sockaddr *addr = p;
+ u32 val;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EINVAL;
+
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+ spin_lock_irq(&bp->lock);
+
+ val = br32(bp, B44_RXCONFIG);
+ if (!(val & RXCONFIG_CAM_ABSENT))
+ __b44_set_mac_addr(bp);
+
+ spin_unlock_irq(&bp->lock);
+
+ return 0;
+}
+
+/* Called at device open time to get the chip ready for
+ * packet processing. Invoked with bp->lock held.
+ */
+static void __b44_set_rx_mode(struct net_device *);
+static void b44_init_hw(struct b44 *bp, int reset_kind)
+{
+ u32 val;
+
+ b44_chip_reset(bp, B44_CHIP_RESET_FULL);
+ if (reset_kind == B44_FULL_RESET) {
+ b44_phy_reset(bp);
+ b44_setup_phy(bp);
+ }
+
+ /* Enable CRC32, set proper LED modes and power on PHY */
+ bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
+ bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
+
+ /* This sets the MAC address too. */
+ __b44_set_rx_mode(bp->dev);
+
+ /* MTU + eth header + possible VLAN tag + struct rx_header */
+ bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
+ bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
+
+ bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
+ if (reset_kind == B44_PARTIAL_RESET) {
+ bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
+ (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
+ } else {
+ bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
+ bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
+ bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
+ (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
+ bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
+
+ bw32(bp, B44_DMARX_PTR, bp->rx_pending);
+ bp->rx_prod = bp->rx_pending;
+
+ bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
+ }
+
+ val = br32(bp, B44_ENET_CTRL);
+ bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
+
+ netdev_reset_queue(bp->dev);
+}
+
+static int b44_open(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ int err;
+
+ err = b44_alloc_consistent(bp, GFP_KERNEL);
+ if (err)
+ goto out;
+
+ napi_enable(&bp->napi);
+
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+
+ b44_check_phy(bp);
+
+ err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
+ if (unlikely(err < 0)) {
+ napi_disable(&bp->napi);
+ b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
+ b44_free_rings(bp);
+ b44_free_consistent(bp);
+ goto out;
+ }
+
+ timer_setup(&bp->timer, b44_timer, 0);
+ bp->timer.expires = jiffies + HZ;
+ add_timer(&bp->timer);
+
+ b44_enable_ints(bp);
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ phy_start(dev->phydev);
+
+ netif_start_queue(dev);
+out:
+ return err;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void b44_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ b44_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
+{
+ u32 i;
+ u32 *pattern = (u32 *) pp;
+
+ for (i = 0; i < bytes; i += sizeof(u32)) {
+ bw32(bp, B44_FILT_ADDR, table_offset + i);
+ bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
+ }
+}
+
+static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
+{
+ int magicsync = 6;
+ int k, j, len = offset;
+ int ethaddr_bytes = ETH_ALEN;
+
+ memset(ppattern + offset, 0xff, magicsync);
+ for (j = 0; j < magicsync; j++) {
+ pmask[len >> 3] |= BIT(len & 7);
+ len++;
+ }
+
+ for (j = 0; j < B44_MAX_PATTERNS; j++) {
+ if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
+ ethaddr_bytes = ETH_ALEN;
+ else
+ ethaddr_bytes = B44_PATTERN_SIZE - len;
+ if (ethaddr_bytes <=0)
+ break;
+ for (k = 0; k< ethaddr_bytes; k++) {
+ ppattern[offset + magicsync +
+ (j * ETH_ALEN) + k] = macaddr[k];
+ pmask[len >> 3] |= BIT(len & 7);
+ len++;
+ }
+ }
+ return len - 1;
+}
+
+/* Setup magic packet patterns in the b44 WOL
+ * pattern matching filter.
+ */
+static void b44_setup_pseudo_magicp(struct b44 *bp)
+{
+
+ u32 val;
+ int plen0, plen1, plen2;
+ u8 *pwol_pattern;
+ u8 pwol_mask[B44_PMASK_SIZE];
+
+ pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
+ if (!pwol_pattern)
+ return;
+
+ /* Ipv4 magic packet pattern - pattern 0.*/
+ memset(pwol_mask, 0, B44_PMASK_SIZE);
+ plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
+ B44_ETHIPV4UDP_HLEN);
+
+ bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
+ bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
+
+ /* Raw ethernet II magic packet pattern - pattern 1 */
+ memset(pwol_pattern, 0, B44_PATTERN_SIZE);
+ memset(pwol_mask, 0, B44_PMASK_SIZE);
+ plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
+ ETH_HLEN);
+
+ bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
+ B44_PATTERN_BASE + B44_PATTERN_SIZE);
+ bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
+ B44_PMASK_BASE + B44_PMASK_SIZE);
+
+ /* Ipv6 magic packet pattern - pattern 2 */
+ memset(pwol_pattern, 0, B44_PATTERN_SIZE);
+ memset(pwol_mask, 0, B44_PMASK_SIZE);
+ plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
+ B44_ETHIPV6UDP_HLEN);
+
+ bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
+ B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
+ bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
+ B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
+
+ kfree(pwol_pattern);
+
+ /* set these pattern's lengths: one less than each real length */
+ val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
+ bw32(bp, B44_WKUP_LEN, val);
+
+ /* enable wakeup pattern matching */
+ val = br32(bp, B44_DEVCTRL);
+ bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
+
+}
+
+#ifdef CONFIG_B44_PCI
+static void b44_setup_wol_pci(struct b44 *bp)
+{
+ u16 val;
+
+ if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
+ bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
+ pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
+ pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
+ }
+}
+#else
+static inline void b44_setup_wol_pci(struct b44 *bp) { }
+#endif /* CONFIG_B44_PCI */
+
+static void b44_setup_wol(struct b44 *bp)
+{
+ u32 val;
+
+ bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
+
+ if (bp->flags & B44_FLAG_B0_ANDLATER) {
+
+ bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
+
+ val = bp->dev->dev_addr[2] << 24 |
+ bp->dev->dev_addr[3] << 16 |
+ bp->dev->dev_addr[4] << 8 |
+ bp->dev->dev_addr[5];
+ bw32(bp, B44_ADDR_LO, val);
+
+ val = bp->dev->dev_addr[0] << 8 |
+ bp->dev->dev_addr[1];
+ bw32(bp, B44_ADDR_HI, val);
+
+ val = br32(bp, B44_DEVCTRL);
+ bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
+
+ } else {
+ b44_setup_pseudo_magicp(bp);
+ }
+ b44_setup_wol_pci(bp);
+}
+
+static int b44_close(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ netif_stop_queue(dev);
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ phy_stop(dev->phydev);
+
+ napi_disable(&bp->napi);
+
+ del_timer_sync(&bp->timer);
+
+ spin_lock_irq(&bp->lock);
+
+ b44_halt(bp);
+ b44_free_rings(bp);
+ netif_carrier_off(dev);
+
+ spin_unlock_irq(&bp->lock);
+
+ free_irq(dev->irq, dev);
+
+ if (bp->flags & B44_FLAG_WOL_ENABLE) {
+ b44_init_hw(bp, B44_PARTIAL_RESET);
+ b44_setup_wol(bp);
+ }
+
+ b44_free_consistent(bp);
+
+ return 0;
+}
+
+static void b44_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *nstat)
+{
+ struct b44 *bp = netdev_priv(dev);
+ struct b44_hw_stats *hwstat = &bp->hw_stats;
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin_irq(&hwstat->syncp);
+
+ /* Convert HW stats into rtnl_link_stats64 stats. */
+ nstat->rx_packets = hwstat->rx_pkts;
+ nstat->tx_packets = hwstat->tx_pkts;
+ nstat->rx_bytes = hwstat->rx_octets;
+ nstat->tx_bytes = hwstat->tx_octets;
+ nstat->tx_errors = (hwstat->tx_jabber_pkts +
+ hwstat->tx_oversize_pkts +
+ hwstat->tx_underruns +
+ hwstat->tx_excessive_cols +
+ hwstat->tx_late_cols);
+ nstat->multicast = hwstat->rx_multicast_pkts;
+ nstat->collisions = hwstat->tx_total_cols;
+
+ nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
+ hwstat->rx_undersize);
+ nstat->rx_over_errors = hwstat->rx_missed_pkts;
+ nstat->rx_frame_errors = hwstat->rx_align_errs;
+ nstat->rx_crc_errors = hwstat->rx_crc_errs;
+ nstat->rx_errors = (hwstat->rx_jabber_pkts +
+ hwstat->rx_oversize_pkts +
+ hwstat->rx_missed_pkts +
+ hwstat->rx_crc_align_errs +
+ hwstat->rx_undersize +
+ hwstat->rx_crc_errs +
+ hwstat->rx_align_errs +
+ hwstat->rx_symbol_errs);
+
+ nstat->tx_aborted_errors = hwstat->tx_underruns;
+#if 0
+ /* Carrier lost counter seems to be broken for some devices */
+ nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
+#endif
+ } while (u64_stats_fetch_retry_irq(&hwstat->syncp, start));
+
+}
+
+static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ int i, num_ents;
+
+ num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE);
+ i = 0;
+ netdev_for_each_mc_addr(ha, dev) {
+ if (i == num_ents)
+ break;
+ __b44_cam_write(bp, ha->addr, i++ + 1);
+ }
+ return i+1;
+}
+
+static void __b44_set_rx_mode(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ u32 val;
+
+ val = br32(bp, B44_RXCONFIG);
+ val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
+ if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
+ val |= RXCONFIG_PROMISC;
+ bw32(bp, B44_RXCONFIG, val);
+ } else {
+ unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
+ int i = 1;
+
+ __b44_set_mac_addr(bp);
+
+ if ((dev->flags & IFF_ALLMULTI) ||
+ (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE))
+ val |= RXCONFIG_ALLMULTI;
+ else
+ i = __b44_load_mcast(bp, dev);
+
+ for (; i < 64; i++)
+ __b44_cam_write(bp, zero, i);
+
+ bw32(bp, B44_RXCONFIG, val);
+ val = br32(bp, B44_CAM_CTRL);
+ bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
+ }
+}
+
+static void b44_set_rx_mode(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ spin_lock_irq(&bp->lock);
+ __b44_set_rx_mode(dev);
+ spin_unlock_irq(&bp->lock);
+}
+
+static u32 b44_get_msglevel(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ return bp->msg_enable;
+}
+
+static void b44_set_msglevel(struct net_device *dev, u32 value)
+{
+ struct b44 *bp = netdev_priv(dev);
+ bp->msg_enable = value;
+}
+
+static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct b44 *bp = netdev_priv(dev);
+ struct ssb_bus *bus = bp->sdev->bus;
+
+ strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
+ strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
+ switch (bus->bustype) {
+ case SSB_BUSTYPE_PCI:
+ strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
+ break;
+ case SSB_BUSTYPE_SSB:
+ strlcpy(info->bus_info, "SSB", sizeof(info->bus_info));
+ break;
+ case SSB_BUSTYPE_PCMCIA:
+ case SSB_BUSTYPE_SDIO:
+ WARN_ON(1); /* A device with this bus does not exist. */
+ break;
+ }
+}
+
+static int b44_nway_reset(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ u32 bmcr;
+ int r;
+
+ spin_lock_irq(&bp->lock);
+ b44_readphy(bp, MII_BMCR, &bmcr);
+ b44_readphy(bp, MII_BMCR, &bmcr);
+ r = -EINVAL;
+ if (bmcr & BMCR_ANENABLE) {
+ b44_writephy(bp, MII_BMCR,
+ bmcr | BMCR_ANRESTART);
+ r = 0;
+ }
+ spin_unlock_irq(&bp->lock);
+
+ return r;
+}
+
+static int b44_get_link_ksettings(struct net_device *dev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct b44 *bp = netdev_priv(dev);
+ u32 supported, advertising;
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
+ BUG_ON(!dev->phydev);
+ phy_ethtool_ksettings_get(dev->phydev, cmd);
+
+ return 0;
+ }
+
+ supported = (SUPPORTED_Autoneg);
+ supported |= (SUPPORTED_100baseT_Half |
+ SUPPORTED_100baseT_Full |
+ SUPPORTED_10baseT_Half |
+ SUPPORTED_10baseT_Full |
+ SUPPORTED_MII);
+
+ advertising = 0;
+ if (bp->flags & B44_FLAG_ADV_10HALF)
+ advertising |= ADVERTISED_10baseT_Half;
+ if (bp->flags & B44_FLAG_ADV_10FULL)
+ advertising |= ADVERTISED_10baseT_Full;
+ if (bp->flags & B44_FLAG_ADV_100HALF)
+ advertising |= ADVERTISED_100baseT_Half;
+ if (bp->flags & B44_FLAG_ADV_100FULL)
+ advertising |= ADVERTISED_100baseT_Full;
+ advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
+ cmd->base.speed = (bp->flags & B44_FLAG_100_BASE_T) ?
+ SPEED_100 : SPEED_10;
+ cmd->base.duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
+ DUPLEX_FULL : DUPLEX_HALF;
+ cmd->base.port = 0;
+ cmd->base.phy_address = bp->phy_addr;
+ cmd->base.autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
+ AUTONEG_DISABLE : AUTONEG_ENABLE;
+ if (cmd->base.autoneg == AUTONEG_ENABLE)
+ advertising |= ADVERTISED_Autoneg;
+
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+ supported);
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+ advertising);
+
+ if (!netif_running(dev)){
+ cmd->base.speed = 0;
+ cmd->base.duplex = 0xff;
+ }
+
+ return 0;
+}
+
+static int b44_set_link_ksettings(struct net_device *dev,
+ const struct ethtool_link_ksettings *cmd)
+{
+ struct b44 *bp = netdev_priv(dev);
+ u32 speed;
+ int ret;
+ u32 advertising;
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
+ BUG_ON(!dev->phydev);
+ spin_lock_irq(&bp->lock);
+ if (netif_running(dev))
+ b44_setup_phy(bp);
+
+ ret = phy_ethtool_ksettings_set(dev->phydev, cmd);
+
+ spin_unlock_irq(&bp->lock);
+
+ return ret;
+ }
+
+ speed = cmd->base.speed;
+
+ ethtool_convert_link_mode_to_legacy_u32(&advertising,
+ cmd->link_modes.advertising);
+
+ /* We do not support gigabit. */
+ if (cmd->base.autoneg == AUTONEG_ENABLE) {
+ if (advertising &
+ (ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseT_Full))
+ return -EINVAL;
+ } else if ((speed != SPEED_100 &&
+ speed != SPEED_10) ||
+ (cmd->base.duplex != DUPLEX_HALF &&
+ cmd->base.duplex != DUPLEX_FULL)) {
+ return -EINVAL;
+ }
+
+ spin_lock_irq(&bp->lock);
+
+ if (cmd->base.autoneg == AUTONEG_ENABLE) {
+ bp->flags &= ~(B44_FLAG_FORCE_LINK |
+ B44_FLAG_100_BASE_T |
+ B44_FLAG_FULL_DUPLEX |
+ B44_FLAG_ADV_10HALF |
+ B44_FLAG_ADV_10FULL |
+ B44_FLAG_ADV_100HALF |
+ B44_FLAG_ADV_100FULL);
+ if (advertising == 0) {
+ bp->flags |= (B44_FLAG_ADV_10HALF |
+ B44_FLAG_ADV_10FULL |
+ B44_FLAG_ADV_100HALF |
+ B44_FLAG_ADV_100FULL);
+ } else {
+ if (advertising & ADVERTISED_10baseT_Half)
+ bp->flags |= B44_FLAG_ADV_10HALF;
+ if (advertising & ADVERTISED_10baseT_Full)
+ bp->flags |= B44_FLAG_ADV_10FULL;
+ if (advertising & ADVERTISED_100baseT_Half)
+ bp->flags |= B44_FLAG_ADV_100HALF;
+ if (advertising & ADVERTISED_100baseT_Full)
+ bp->flags |= B44_FLAG_ADV_100FULL;
+ }
+ } else {
+ bp->flags |= B44_FLAG_FORCE_LINK;
+ bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
+ if (speed == SPEED_100)
+ bp->flags |= B44_FLAG_100_BASE_T;
+ if (cmd->base.duplex == DUPLEX_FULL)
+ bp->flags |= B44_FLAG_FULL_DUPLEX;
+ }
+
+ if (netif_running(dev))
+ b44_setup_phy(bp);
+
+ spin_unlock_irq(&bp->lock);
+
+ return 0;
+}
+
+static void b44_get_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *ering)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ ering->rx_max_pending = B44_RX_RING_SIZE - 1;
+ ering->rx_pending = bp->rx_pending;
+
+ /* XXX ethtool lacks a tx_max_pending, oops... */
+}
+
+static int b44_set_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *ering)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
+ (ering->rx_mini_pending != 0) ||
+ (ering->rx_jumbo_pending != 0) ||
+ (ering->tx_pending > B44_TX_RING_SIZE - 1))
+ return -EINVAL;
+
+ spin_lock_irq(&bp->lock);
+
+ bp->rx_pending = ering->rx_pending;
+ bp->tx_pending = ering->tx_pending;
+
+ b44_halt(bp);
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+ netif_wake_queue(bp->dev);
+ spin_unlock_irq(&bp->lock);
+
+ b44_enable_ints(bp);
+
+ return 0;
+}
+
+static void b44_get_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *epause)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ epause->autoneg =
+ (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
+ epause->rx_pause =
+ (bp->flags & B44_FLAG_RX_PAUSE) != 0;
+ epause->tx_pause =
+ (bp->flags & B44_FLAG_TX_PAUSE) != 0;
+}
+
+static int b44_set_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *epause)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ spin_lock_irq(&bp->lock);
+ if (epause->autoneg)
+ bp->flags |= B44_FLAG_PAUSE_AUTO;
+ else
+ bp->flags &= ~B44_FLAG_PAUSE_AUTO;
+ if (epause->rx_pause)
+ bp->flags |= B44_FLAG_RX_PAUSE;
+ else
+ bp->flags &= ~B44_FLAG_RX_PAUSE;
+ if (epause->tx_pause)
+ bp->flags |= B44_FLAG_TX_PAUSE;
+ else
+ bp->flags &= ~B44_FLAG_TX_PAUSE;
+ if (netif_running(dev)) {
+ if (bp->flags & B44_FLAG_PAUSE_AUTO) {
+ b44_halt(bp);
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+ } else {
+ __b44_set_flow_ctrl(bp, bp->flags);
+ }
+ }
+ spin_unlock_irq(&bp->lock);
+
+ b44_enable_ints(bp);
+
+ return 0;
+}
+
+static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ switch(stringset) {
+ case ETH_SS_STATS:
+ memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
+ break;
+ }
+}
+
+static int b44_get_sset_count(struct net_device *dev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return ARRAY_SIZE(b44_gstrings);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void b44_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct b44 *bp = netdev_priv(dev);
+ struct b44_hw_stats *hwstat = &bp->hw_stats;
+ u64 *data_src, *data_dst;
+ unsigned int start;
+ u32 i;
+
+ spin_lock_irq(&bp->lock);
+ b44_stats_update(bp);
+ spin_unlock_irq(&bp->lock);
+
+ do {
+ data_src = &hwstat->tx_good_octets;
+ data_dst = data;
+ start = u64_stats_fetch_begin_irq(&hwstat->syncp);
+
+ for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
+ *data_dst++ = *data_src++;
+
+ } while (u64_stats_fetch_retry_irq(&hwstat->syncp, start));
+}
+
+static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ wol->supported = WAKE_MAGIC;
+ if (bp->flags & B44_FLAG_WOL_ENABLE)
+ wol->wolopts = WAKE_MAGIC;
+ else
+ wol->wolopts = 0;
+ memset(&wol->sopass, 0, sizeof(wol->sopass));
+}
+
+static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct b44 *bp = netdev_priv(dev);
+
+ spin_lock_irq(&bp->lock);
+ if (wol->wolopts & WAKE_MAGIC)
+ bp->flags |= B44_FLAG_WOL_ENABLE;
+ else
+ bp->flags &= ~B44_FLAG_WOL_ENABLE;
+ spin_unlock_irq(&bp->lock);
+
+ device_set_wakeup_enable(bp->sdev->dev, wol->wolopts & WAKE_MAGIC);
+ return 0;
+}
+
+static const struct ethtool_ops b44_ethtool_ops = {
+ .get_drvinfo = b44_get_drvinfo,
+ .nway_reset = b44_nway_reset,
+ .get_link = ethtool_op_get_link,
+ .get_wol = b44_get_wol,
+ .set_wol = b44_set_wol,
+ .get_ringparam = b44_get_ringparam,
+ .set_ringparam = b44_set_ringparam,
+ .get_pauseparam = b44_get_pauseparam,
+ .set_pauseparam = b44_set_pauseparam,
+ .get_msglevel = b44_get_msglevel,
+ .set_msglevel = b44_set_msglevel,
+ .get_strings = b44_get_strings,
+ .get_sset_count = b44_get_sset_count,
+ .get_ethtool_stats = b44_get_ethtool_stats,
+ .get_link_ksettings = b44_get_link_ksettings,
+ .set_link_ksettings = b44_set_link_ksettings,
+};
+
+static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct b44 *bp = netdev_priv(dev);
+ int err = -EINVAL;
+
+ if (!netif_running(dev))
+ goto out;
+
+ spin_lock_irq(&bp->lock);
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
+ BUG_ON(!dev->phydev);
+ err = phy_mii_ioctl(dev->phydev, ifr, cmd);
+ } else {
+ err = generic_mii_ioctl(&bp->mii_if, if_mii(ifr), cmd, NULL);
+ }
+ spin_unlock_irq(&bp->lock);
+out:
+ return err;
+}
+
+static int b44_get_invariants(struct b44 *bp)
+{
+ struct ssb_device *sdev = bp->sdev;
+ int err = 0;
+ u8 *addr;
+
+ bp->dma_offset = ssb_dma_translation(sdev);
+
+ if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
+ instance > 1) {
+ addr = sdev->bus->sprom.et1mac;
+ bp->phy_addr = sdev->bus->sprom.et1phyaddr;
+ } else {
+ addr = sdev->bus->sprom.et0mac;
+ bp->phy_addr = sdev->bus->sprom.et0phyaddr;
+ }
+ /* Some ROMs have buggy PHY addresses with the high
+ * bits set (sign extension?). Truncate them to a
+ * valid PHY address. */
+ bp->phy_addr &= 0x1F;
+
+ memcpy(bp->dev->dev_addr, addr, ETH_ALEN);
+
+ if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
+ pr_err("Invalid MAC address found in EEPROM\n");
+ return -EINVAL;
+ }
+
+ bp->imask = IMASK_DEF;
+
+ /* XXX - really required?
+ bp->flags |= B44_FLAG_BUGGY_TXPTR;
+ */
+
+ if (bp->sdev->id.revision >= 7)
+ bp->flags |= B44_FLAG_B0_ANDLATER;
+
+ return err;
+}
+
+static const struct net_device_ops b44_netdev_ops = {
+ .ndo_open = b44_open,
+ .ndo_stop = b44_close,
+ .ndo_start_xmit = b44_start_xmit,
+ .ndo_get_stats64 = b44_get_stats64,
+ .ndo_set_rx_mode = b44_set_rx_mode,
+ .ndo_set_mac_address = b44_set_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_do_ioctl = b44_ioctl,
+ .ndo_tx_timeout = b44_tx_timeout,
+ .ndo_change_mtu = b44_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = b44_poll_controller,
+#endif
+};
+
+static void b44_adjust_link(struct net_device *dev)
+{
+ struct b44 *bp = netdev_priv(dev);
+ struct phy_device *phydev = dev->phydev;
+ bool status_changed = 0;
+
+ BUG_ON(!phydev);
+
+ if (bp->old_link != phydev->link) {
+ status_changed = 1;
+ bp->old_link = phydev->link;
+ }
+
+ /* reflect duplex change */
+ if (phydev->link) {
+ if ((phydev->duplex == DUPLEX_HALF) &&
+ (bp->flags & B44_FLAG_FULL_DUPLEX)) {
+ status_changed = 1;
+ bp->flags &= ~B44_FLAG_FULL_DUPLEX;
+ } else if ((phydev->duplex == DUPLEX_FULL) &&
+ !(bp->flags & B44_FLAG_FULL_DUPLEX)) {
+ status_changed = 1;
+ bp->flags |= B44_FLAG_FULL_DUPLEX;
+ }
+ }
+
+ if (status_changed) {
+ u32 val = br32(bp, B44_TX_CTRL);
+ if (bp->flags & B44_FLAG_FULL_DUPLEX)
+ val |= TX_CTRL_DUPLEX;
+ else
+ val &= ~TX_CTRL_DUPLEX;
+ bw32(bp, B44_TX_CTRL, val);
+ phy_print_status(phydev);
+ }
+}
+
+static int b44_register_phy_one(struct b44 *bp)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+ struct mii_bus *mii_bus;
+ struct ssb_device *sdev = bp->sdev;
+ struct phy_device *phydev;
+ char bus_id[MII_BUS_ID_SIZE + 3];
+ struct ssb_sprom *sprom = &sdev->bus->sprom;
+ int err;
+
+ mii_bus = mdiobus_alloc();
+ if (!mii_bus) {
+ dev_err(sdev->dev, "mdiobus_alloc() failed\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ mii_bus->priv = bp;
+ mii_bus->read = b44_mdio_read_phylib;
+ mii_bus->write = b44_mdio_write_phylib;
+ mii_bus->name = "b44_eth_mii";
+ mii_bus->parent = sdev->dev;
+ mii_bus->phy_mask = ~(1 << bp->phy_addr);
+ snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%x", instance);
+
+ bp->mii_bus = mii_bus;
+
+ err = mdiobus_register(mii_bus);
+ if (err) {
+ dev_err(sdev->dev, "failed to register MII bus\n");
+ goto err_out_mdiobus;
+ }
+
+ if (!mdiobus_is_registered_device(bp->mii_bus, bp->phy_addr) &&
+ (sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) {
+
+ dev_info(sdev->dev,
+ "could not find PHY at %i, use fixed one\n",
+ bp->phy_addr);
+
+ bp->phy_addr = 0;
+ snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, "fixed-0",
+ bp->phy_addr);
+ } else {
+ snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, mii_bus->id,
+ bp->phy_addr);
+ }
+
+ phydev = phy_connect(bp->dev, bus_id, &b44_adjust_link,
+ PHY_INTERFACE_MODE_MII);
+ if (IS_ERR(phydev)) {
+ dev_err(sdev->dev, "could not attach PHY at %i\n",
+ bp->phy_addr);
+ err = PTR_ERR(phydev);
+ goto err_out_mdiobus_unregister;
+ }
+
+ /* mask with MAC supported features */
+ linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, mask);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, mask);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, mask);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_MII_BIT, mask);
+ linkmode_and(phydev->supported, phydev->supported, mask);
+ linkmode_copy(phydev->advertising, phydev->supported);
+
+ bp->old_link = 0;
+ bp->phy_addr = phydev->mdio.addr;
+
+ phy_attached_info(phydev);
+
+ return 0;
+
+err_out_mdiobus_unregister:
+ mdiobus_unregister(mii_bus);
+
+err_out_mdiobus:
+ mdiobus_free(mii_bus);
+
+err_out:
+ return err;
+}
+
+static void b44_unregister_phy_one(struct b44 *bp)
+{
+ struct net_device *dev = bp->dev;
+ struct mii_bus *mii_bus = bp->mii_bus;
+
+ phy_disconnect(dev->phydev);
+ mdiobus_unregister(mii_bus);
+ mdiobus_free(mii_bus);
+}
+
+static int b44_init_one(struct ssb_device *sdev,
+ const struct ssb_device_id *ent)
+{
+ struct net_device *dev;
+ struct b44 *bp;
+ int err;
+
+ instance++;
+
+ pr_info_once("%s version %s\n", DRV_DESCRIPTION, DRV_MODULE_VERSION);
+
+ dev = alloc_etherdev(sizeof(*bp));
+ if (!dev) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ SET_NETDEV_DEV(dev, sdev->dev);
+
+ /* No interesting netdevice features in this card... */
+ dev->features |= 0;
+
+ bp = netdev_priv(dev);
+ bp->sdev = sdev;
+ bp->dev = dev;
+ bp->force_copybreak = 0;
+
+ bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
+
+ spin_lock_init(&bp->lock);
+ u64_stats_init(&bp->hw_stats.syncp);
+
+ bp->rx_pending = B44_DEF_RX_RING_PENDING;
+ bp->tx_pending = B44_DEF_TX_RING_PENDING;
+
+ dev->netdev_ops = &b44_netdev_ops;
+ netif_napi_add(dev, &bp->napi, b44_poll, 64);
+ dev->watchdog_timeo = B44_TX_TIMEOUT;
+ dev->min_mtu = B44_MIN_MTU;
+ dev->max_mtu = B44_MAX_MTU;
+ dev->irq = sdev->irq;
+ dev->ethtool_ops = &b44_ethtool_ops;
+
+ err = ssb_bus_powerup(sdev->bus, 0);
+ if (err) {
+ dev_err(sdev->dev,
+ "Failed to powerup the bus\n");
+ goto err_out_free_dev;
+ }
+
+ err = dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30));
+ if (err) {
+ dev_err(sdev->dev,
+ "Required 30BIT DMA mask unsupported by the system\n");
+ goto err_out_powerdown;
+ }
+
+ err = b44_get_invariants(bp);
+ if (err) {
+ dev_err(sdev->dev,
+ "Problem fetching invariants of chip, aborting\n");
+ goto err_out_powerdown;
+ }
+
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
+ dev_err(sdev->dev, "No PHY present on this MAC, aborting\n");
+ err = -ENODEV;
+ goto err_out_powerdown;
+ }
+
+ bp->mii_if.dev = dev;
+ bp->mii_if.mdio_read = b44_mdio_read_mii;
+ bp->mii_if.mdio_write = b44_mdio_write_mii;
+ bp->mii_if.phy_id = bp->phy_addr;
+ bp->mii_if.phy_id_mask = 0x1f;
+ bp->mii_if.reg_num_mask = 0x1f;
+
+ /* By default, advertise all speed/duplex settings. */
+ bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
+ B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
+
+ /* By default, auto-negotiate PAUSE. */
+ bp->flags |= B44_FLAG_PAUSE_AUTO;
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(sdev->dev, "Cannot register net device, aborting\n");
+ goto err_out_powerdown;
+ }
+
+ netif_carrier_off(dev);
+
+ ssb_set_drvdata(sdev, dev);
+
+ /* Chip reset provides power to the b44 MAC & PCI cores, which
+ * is necessary for MAC register access.
+ */
+ b44_chip_reset(bp, B44_CHIP_RESET_FULL);
+
+ /* do a phy reset to test if there is an active phy */
+ err = b44_phy_reset(bp);
+ if (err < 0) {
+ dev_err(sdev->dev, "phy reset failed\n");
+ goto err_out_unregister_netdev;
+ }
+
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
+ err = b44_register_phy_one(bp);
+ if (err) {
+ dev_err(sdev->dev, "Cannot register PHY, aborting\n");
+ goto err_out_unregister_netdev;
+ }
+ }
+
+ device_set_wakeup_capable(sdev->dev, true);
+ netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr);
+
+ return 0;
+
+err_out_unregister_netdev:
+ unregister_netdev(dev);
+err_out_powerdown:
+ ssb_bus_may_powerdown(sdev->bus);
+
+err_out_free_dev:
+ netif_napi_del(&bp->napi);
+ free_netdev(dev);
+
+out:
+ return err;
+}
+
+static void b44_remove_one(struct ssb_device *sdev)
+{
+ struct net_device *dev = ssb_get_drvdata(sdev);
+ struct b44 *bp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ b44_unregister_phy_one(bp);
+ ssb_device_disable(sdev, 0);
+ ssb_bus_may_powerdown(sdev->bus);
+ netif_napi_del(&bp->napi);
+ free_netdev(dev);
+ ssb_pcihost_set_power_state(sdev, PCI_D3hot);
+ ssb_set_drvdata(sdev, NULL);
+}
+
+static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
+{
+ struct net_device *dev = ssb_get_drvdata(sdev);
+ struct b44 *bp = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return 0;
+
+ del_timer_sync(&bp->timer);
+
+ spin_lock_irq(&bp->lock);
+
+ b44_halt(bp);
+ netif_carrier_off(bp->dev);
+ netif_device_detach(bp->dev);
+ b44_free_rings(bp);
+
+ spin_unlock_irq(&bp->lock);
+
+ free_irq(dev->irq, dev);
+ if (bp->flags & B44_FLAG_WOL_ENABLE) {
+ b44_init_hw(bp, B44_PARTIAL_RESET);
+ b44_setup_wol(bp);
+ }
+
+ ssb_pcihost_set_power_state(sdev, PCI_D3hot);
+ return 0;
+}
+
+static int b44_resume(struct ssb_device *sdev)
+{
+ struct net_device *dev = ssb_get_drvdata(sdev);
+ struct b44 *bp = netdev_priv(dev);
+ int rc = 0;
+
+ rc = ssb_bus_powerup(sdev->bus, 0);
+ if (rc) {
+ dev_err(sdev->dev,
+ "Failed to powerup the bus\n");
+ return rc;
+ }
+
+ if (!netif_running(dev))
+ return 0;
+
+ spin_lock_irq(&bp->lock);
+ b44_init_rings(bp);
+ b44_init_hw(bp, B44_FULL_RESET);
+ spin_unlock_irq(&bp->lock);
+
+ /*
+ * As a shared interrupt, the handler can be called immediately. To be
+ * able to check the interrupt status the hardware must already be
+ * powered back on (b44_init_hw).
+ */
+ rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
+ if (rc) {
+ netdev_err(dev, "request_irq failed\n");
+ spin_lock_irq(&bp->lock);
+ b44_halt(bp);
+ b44_free_rings(bp);
+ spin_unlock_irq(&bp->lock);
+ return rc;
+ }
+
+ netif_device_attach(bp->dev);
+
+ b44_enable_ints(bp);
+ netif_wake_queue(dev);
+
+ mod_timer(&bp->timer, jiffies + 1);
+
+ return 0;
+}
+
+static struct ssb_driver b44_ssb_driver = {
+ .name = DRV_MODULE_NAME,
+ .id_table = b44_ssb_tbl,
+ .probe = b44_init_one,
+ .remove = b44_remove_one,
+ .suspend = b44_suspend,
+ .resume = b44_resume,
+};
+
+static inline int __init b44_pci_init(void)
+{
+ int err = 0;
+#ifdef CONFIG_B44_PCI
+ err = ssb_pcihost_register(&b44_pci_driver);
+#endif
+ return err;
+}
+
+static inline void b44_pci_exit(void)
+{
+#ifdef CONFIG_B44_PCI
+ ssb_pcihost_unregister(&b44_pci_driver);
+#endif
+}
+
+static int __init b44_init(void)
+{
+ unsigned int dma_desc_align_size = dma_get_cache_alignment();
+ int err;
+
+ /* Setup paramaters for syncing RX/TX DMA descriptors */
+ dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
+
+ err = b44_pci_init();
+ if (err)
+ return err;
+ err = ssb_driver_register(&b44_ssb_driver);
+ if (err)
+ b44_pci_exit();
+ return err;
+}
+
+static void __exit b44_cleanup(void)
+{
+ ssb_driver_unregister(&b44_ssb_driver);
+ b44_pci_exit();
+}
+
+module_init(b44_init);
+module_exit(b44_cleanup);
+