[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/net/arcnet/com20020.c b/src/kernel/linux/v4.14/drivers/net/arcnet/com20020.c
new file mode 100644
index 0000000..78043a9
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/net/arcnet/com20020.c
@@ -0,0 +1,418 @@
+/*
+ * Linux ARCnet driver - COM20020 chipset support
+ *
+ * Written 1997 by David Woodhouse.
+ * Written 1994-1999 by Avery Pennarun.
+ * Written 1999 by Martin Mares <mj@ucw.cz>.
+ * Derived from skeleton.c by Donald Becker.
+ *
+ * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
+ * for sponsoring the further development of this driver.
+ *
+ * **********************
+ *
+ * The original copyright of skeleton.c was as follows:
+ *
+ * skeleton.c Written 1993 by Donald Becker.
+ * Copyright 1993 United States Government as represented by the
+ * Director, National Security Agency. This software may only be used
+ * and distributed according to the terms of the GNU General Public License as
+ * modified by SRC, incorporated herein by reference.
+ *
+ * **********************
+ *
+ * For more details, see drivers/net/arcnet.c
+ *
+ * **********************
+ */
+
+#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+
+#include "arcdevice.h"
+#include "com20020.h"
+
+static const char * const clockrates[] = {
+ "XXXXXXX", "XXXXXXXX", "XXXXXX", "2.5 Mb/s",
+ "1.25Mb/s", "625 Kb/s", "312.5 Kb/s", "156.25 Kb/s",
+ "Reserved", "Reserved", "Reserved"
+};
+
+static void com20020_command(struct net_device *dev, int command);
+static int com20020_status(struct net_device *dev);
+static void com20020_setmask(struct net_device *dev, int mask);
+static int com20020_reset(struct net_device *dev, int really_reset);
+static void com20020_copy_to_card(struct net_device *dev, int bufnum,
+ int offset, void *buf, int count);
+static void com20020_copy_from_card(struct net_device *dev, int bufnum,
+ int offset, void *buf, int count);
+static void com20020_set_mc_list(struct net_device *dev);
+static void com20020_close(struct net_device *);
+
+static void com20020_copy_from_card(struct net_device *dev, int bufnum,
+ int offset, void *buf, int count)
+{
+ int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset;
+
+ /* set up the address register */
+ arcnet_outb((ofs >> 8) | RDDATAflag | AUTOINCflag,
+ ioaddr, COM20020_REG_W_ADDR_HI);
+ arcnet_outb(ofs & 0xff, ioaddr, COM20020_REG_W_ADDR_LO);
+
+ /* copy the data */
+ TIME(dev, "insb", count,
+ arcnet_insb(ioaddr, COM20020_REG_RW_MEMDATA, buf, count));
+}
+
+static void com20020_copy_to_card(struct net_device *dev, int bufnum,
+ int offset, void *buf, int count)
+{
+ int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset;
+
+ /* set up the address register */
+ arcnet_outb((ofs >> 8) | AUTOINCflag, ioaddr, COM20020_REG_W_ADDR_HI);
+ arcnet_outb(ofs & 0xff, ioaddr, COM20020_REG_W_ADDR_LO);
+
+ /* copy the data */
+ TIME(dev, "outsb", count,
+ arcnet_outsb(ioaddr, COM20020_REG_RW_MEMDATA, buf, count));
+}
+
+/* Reset the card and check some basic stuff during the detection stage. */
+int com20020_check(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr, status;
+ struct arcnet_local *lp = netdev_priv(dev);
+
+ arcnet_outb(XTOcfg(3) | RESETcfg, ioaddr, COM20020_REG_W_CONFIG);
+ udelay(5);
+ arcnet_outb(XTOcfg(3), ioaddr, COM20020_REG_W_CONFIG);
+ mdelay(RESETtime);
+
+ lp->setup = lp->clockm ? 0 : (lp->clockp << 1);
+ lp->setup2 = (lp->clockm << 4) | 8;
+
+ /* CHECK: should we do this for SOHARD cards ? */
+ /* Enable P1Mode for backplane mode */
+ lp->setup = lp->setup | P1MODE;
+
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP1);
+ arcnet_outb(lp->setup, ioaddr, COM20020_REG_W_XREG);
+
+ if (lp->clockm != 0) {
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP2);
+ arcnet_outb(lp->setup2, ioaddr, COM20020_REG_W_XREG);
+
+ /* must now write the magic "restart operation" command */
+ mdelay(1);
+ arcnet_outb(STARTIOcmd, ioaddr, COM20020_REG_W_COMMAND);
+ }
+
+ lp->config = (lp->timeout << 3) | (lp->backplane << 2) | SUB_NODE;
+ /* set node ID to 0x42 (but transmitter is disabled, so it's okay) */
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ arcnet_outb(0x42, ioaddr, COM20020_REG_W_XREG);
+
+ status = arcnet_inb(ioaddr, COM20020_REG_R_STATUS);
+
+ if ((status & 0x99) != (NORXflag | TXFREEflag | RESETflag)) {
+ arc_printk(D_NORMAL, dev, "status invalid (%Xh).\n", status);
+ return -ENODEV;
+ }
+ arc_printk(D_INIT_REASONS, dev, "status after reset: %X\n", status);
+
+ arcnet_outb(CFLAGScmd | RESETclear | CONFIGclear,
+ ioaddr, COM20020_REG_W_COMMAND);
+ status = arcnet_inb(ioaddr, COM20020_REG_R_STATUS);
+ arc_printk(D_INIT_REASONS, dev, "status after reset acknowledged: %X\n",
+ status);
+
+ /* Read first location of memory */
+ arcnet_outb(0 | RDDATAflag | AUTOINCflag,
+ ioaddr, COM20020_REG_W_ADDR_HI);
+ arcnet_outb(0, ioaddr, COM20020_REG_W_ADDR_LO);
+
+ status = arcnet_inb(ioaddr, COM20020_REG_RW_MEMDATA);
+ if (status != TESTvalue) {
+ arc_printk(D_NORMAL, dev, "Signature byte not found (%02Xh != D1h).\n",
+ status);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int com20020_set_hwaddr(struct net_device *dev, void *addr)
+{
+ int ioaddr = dev->base_addr;
+ struct arcnet_local *lp = netdev_priv(dev);
+ struct sockaddr *hwaddr = addr;
+
+ memcpy(dev->dev_addr, hwaddr->sa_data, 1);
+ com20020_set_subaddress(lp, ioaddr, SUB_NODE);
+ arcnet_outb(dev->dev_addr[0], ioaddr, COM20020_REG_W_XREG);
+
+ return 0;
+}
+
+static int com20020_netdev_open(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr;
+ struct arcnet_local *lp = netdev_priv(dev);
+
+ lp->config |= TXENcfg;
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+
+ return arcnet_open(dev);
+}
+
+static int com20020_netdev_close(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr;
+ struct arcnet_local *lp = netdev_priv(dev);
+
+ arcnet_close(dev);
+
+ /* disable transmitter */
+ lp->config &= ~TXENcfg;
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ return 0;
+}
+
+const struct net_device_ops com20020_netdev_ops = {
+ .ndo_open = com20020_netdev_open,
+ .ndo_stop = com20020_netdev_close,
+ .ndo_start_xmit = arcnet_send_packet,
+ .ndo_tx_timeout = arcnet_timeout,
+ .ndo_set_mac_address = com20020_set_hwaddr,
+ .ndo_set_rx_mode = com20020_set_mc_list,
+};
+
+/* Set up the struct net_device associated with this card. Called after
+ * probing succeeds.
+ */
+int com20020_found(struct net_device *dev, int shared)
+{
+ struct arcnet_local *lp;
+ int ioaddr = dev->base_addr;
+
+ /* Initialize the rest of the device structure. */
+
+ lp = netdev_priv(dev);
+
+ lp->hw.owner = THIS_MODULE;
+ lp->hw.command = com20020_command;
+ lp->hw.status = com20020_status;
+ lp->hw.intmask = com20020_setmask;
+ lp->hw.reset = com20020_reset;
+ lp->hw.copy_to_card = com20020_copy_to_card;
+ lp->hw.copy_from_card = com20020_copy_from_card;
+ lp->hw.close = com20020_close;
+
+ /* FIXME: do this some other way! */
+ if (!dev->dev_addr[0])
+ dev->dev_addr[0] = arcnet_inb(ioaddr, 8);
+
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP1);
+ arcnet_outb(lp->setup, ioaddr, COM20020_REG_W_XREG);
+
+ if (lp->card_flags & ARC_CAN_10MBIT) {
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP2);
+ arcnet_outb(lp->setup2, ioaddr, COM20020_REG_W_XREG);
+
+ /* must now write the magic "restart operation" command */
+ mdelay(1);
+ arcnet_outb(STARTIOcmd, ioaddr, COM20020_REG_W_COMMAND);
+ }
+
+ lp->config = (lp->timeout << 3) | (lp->backplane << 2) | SUB_NODE;
+ /* Default 0x38 + register: Node ID */
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ arcnet_outb(dev->dev_addr[0], ioaddr, COM20020_REG_W_XREG);
+
+ /* reserve the irq */
+ if (request_irq(dev->irq, arcnet_interrupt, shared,
+ "arcnet (COM20020)", dev)) {
+ arc_printk(D_NORMAL, dev, "Can't get IRQ %d!\n", dev->irq);
+ return -ENODEV;
+ }
+
+ arc_printk(D_NORMAL, dev, "%s: station %02Xh found at %03lXh, IRQ %d.\n",
+ lp->card_name, dev->dev_addr[0], dev->base_addr, dev->irq);
+
+ if (lp->backplane)
+ arc_printk(D_NORMAL, dev, "Using backplane mode.\n");
+
+ if (lp->timeout != 3)
+ arc_printk(D_NORMAL, dev, "Using extended timeout value of %d\n",
+ lp->timeout);
+
+ arc_printk(D_NORMAL, dev, "Using CKP %d - data rate %s\n",
+ lp->setup >> 1,
+ clockrates[3 -
+ ((lp->setup2 & 0xF0) >> 4) +
+ ((lp->setup & 0x0F) >> 1)]);
+ /* The clockrates array index looks very fragile.
+ * It seems like it could have negative indexing.
+ */
+
+ if (register_netdev(dev)) {
+ free_irq(dev->irq, dev);
+ return -EIO;
+ }
+ return 0;
+}
+
+/* Do a hardware reset on the card, and set up necessary registers.
+ *
+ * This should be called as little as possible, because it disrupts the
+ * token on the network (causes a RECON) and requires a significant delay.
+ *
+ * However, it does make sure the card is in a defined state.
+ */
+static int com20020_reset(struct net_device *dev, int really_reset)
+{
+ struct arcnet_local *lp = netdev_priv(dev);
+ u_int ioaddr = dev->base_addr;
+ u_char inbyte;
+
+ arc_printk(D_DEBUG, dev, "%s: %d: %s: dev: %p, lp: %p, dev->name: %s\n",
+ __FILE__, __LINE__, __func__, dev, lp, dev->name);
+ arc_printk(D_INIT, dev, "Resetting %s (status=%02Xh)\n",
+ dev->name, arcnet_inb(ioaddr, COM20020_REG_R_STATUS));
+
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+ lp->config |= (lp->timeout << 3) | (lp->backplane << 2);
+ /* power-up defaults */
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+
+ if (really_reset) {
+ /* reset the card */
+ arcnet_outb(lp->config | RESETcfg, ioaddr, COM20020_REG_W_CONFIG);
+ udelay(5);
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+ mdelay(RESETtime * 2);
+ /* COM20020 seems to be slower sometimes */
+ }
+ /* clear flags & end reset */
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+ arcnet_outb(CFLAGScmd | RESETclear | CONFIGclear,
+ ioaddr, COM20020_REG_W_COMMAND);
+
+ /* verify that the ARCnet signature byte is present */
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+
+ com20020_copy_from_card(dev, 0, 0, &inbyte, 1);
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+ if (inbyte != TESTvalue) {
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n",
+ __FILE__, __LINE__, __func__);
+ arc_printk(D_NORMAL, dev, "reset failed: TESTvalue not present.\n");
+ return 1;
+ }
+ /* enable extended (512-byte) packets */
+ arcnet_outb(CONFIGcmd | EXTconf, ioaddr, COM20020_REG_W_COMMAND);
+
+ arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
+
+ /* done! return success. */
+ return 0;
+}
+
+static void com20020_setmask(struct net_device *dev, int mask)
+{
+ u_int ioaddr = dev->base_addr;
+
+ arc_printk(D_DURING, dev, "Setting mask to %x at %x\n", mask, ioaddr);
+ arcnet_outb(mask, ioaddr, COM20020_REG_W_INTMASK);
+}
+
+static void com20020_command(struct net_device *dev, int cmd)
+{
+ u_int ioaddr = dev->base_addr;
+
+ arcnet_outb(cmd, ioaddr, COM20020_REG_W_COMMAND);
+}
+
+static int com20020_status(struct net_device *dev)
+{
+ u_int ioaddr = dev->base_addr;
+
+ return arcnet_inb(ioaddr, COM20020_REG_R_STATUS) +
+ (arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT) << 8);
+}
+
+static void com20020_close(struct net_device *dev)
+{
+ struct arcnet_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+
+ /* disable transmitter */
+ lp->config &= ~TXENcfg;
+ arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ * num_addrs == -1 Promiscuous mode, receive all packets
+ * num_addrs == 0 Normal mode, clear multicast list
+ * num_addrs > 0 Multicast mode, receive normal and MC packets, and do
+ * best-effort filtering.
+ * FIXME - do multicast stuff, not just promiscuous.
+ */
+static void com20020_set_mc_list(struct net_device *dev)
+{
+ struct arcnet_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+
+ if ((dev->flags & IFF_PROMISC) && (dev->flags & IFF_UP)) {
+ /* Enable promiscuous mode */
+ if (!(lp->setup & PROMISCset))
+ arc_printk(D_NORMAL, dev, "Setting promiscuous flag...\n");
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP1);
+ lp->setup |= PROMISCset;
+ arcnet_outb(lp->setup, ioaddr, COM20020_REG_W_XREG);
+ } else {
+ /* Disable promiscuous mode, use normal mode */
+ if ((lp->setup & PROMISCset))
+ arc_printk(D_NORMAL, dev, "Resetting promiscuous flag...\n");
+ com20020_set_subaddress(lp, ioaddr, SUB_SETUP1);
+ lp->setup &= ~PROMISCset;
+ arcnet_outb(lp->setup, ioaddr, COM20020_REG_W_XREG);
+ }
+}
+
+#if defined(CONFIG_ARCNET_COM20020_PCI_MODULE) || \
+ defined(CONFIG_ARCNET_COM20020_ISA_MODULE) || \
+ defined(CONFIG_ARCNET_COM20020_CS_MODULE)
+EXPORT_SYMBOL(com20020_check);
+EXPORT_SYMBOL(com20020_found);
+EXPORT_SYMBOL(com20020_netdev_ops);
+#endif
+
+MODULE_LICENSE("GPL");
+
+#ifdef MODULE
+
+static int __init com20020_module_init(void)
+{
+ if (BUGLVL(D_NORMAL))
+ pr_info("%s\n", "COM20020 chipset support (by David Woodhouse et al.)");
+ return 0;
+}
+
+static void __exit com20020_module_exit(void)
+{
+}
+module_init(com20020_module_init);
+module_exit(com20020_module_exit);
+#endif /* MODULE */