+++ /dev/null
-// SPDX-License-Identifier: GPL-1.0+
-/* wd.c: A WD80x3 ethernet driver for linux. */
-/*
- Written 1993-94 by Donald Becker.
-
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- This is a driver for WD8003 and WD8013 "compatible" ethercards.
-
- Thanks to Russ Nelson (nelson@crnwyr.com) for loaning me a WD8013.
-
- Changelog:
-
- Paul Gortmaker : multiple card support for module users, support
- for non-standard memory sizes.
-
-
-*/
-
-static const char version[] =
- "wd.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <net/Space.h>
-
-#include <asm/io.h>
-
-#include "8390.h"
-
-#define DRV_NAME "wd"
-
-/* A zero-terminated list of I/O addresses to be probed. */
-static unsigned int wd_portlist[] __initdata =
-{0x300, 0x280, 0x380, 0x240, 0};
-
-static int wd_probe1(struct net_device *dev, int ioaddr);
-
-static int wd_open(struct net_device *dev);
-static void wd_reset_8390(struct net_device *dev);
-static void wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
- int ring_page);
-static void wd_block_input(struct net_device *dev, int count,
- struct sk_buff *skb, int ring_offset);
-static void wd_block_output(struct net_device *dev, int count,
- const unsigned char *buf, int start_page);
-static int wd_close(struct net_device *dev);
-
-static u32 wd_msg_enable;
-
-#define WD_START_PG 0x00 /* First page of TX buffer */
-#define WD03_STOP_PG 0x20 /* Last page +1 of RX ring */
-#define WD13_STOP_PG 0x40 /* Last page +1 of RX ring */
-
-#define WD_CMDREG 0 /* Offset to ASIC command register. */
-#define WD_RESET 0x80 /* Board reset, in WD_CMDREG. */
-#define WD_MEMENB 0x40 /* Enable the shared memory. */
-#define WD_CMDREG5 5 /* Offset to 16-bit-only ASIC register 5. */
-#define ISA16 0x80 /* Enable 16 bit access from the ISA bus. */
-#define NIC16 0x40 /* Enable 16 bit access from the 8390. */
-#define WD_NIC_OFFSET 16 /* Offset to the 8390 from the base_addr. */
-#define WD_IO_EXTENT 32
-
-
-/* Probe for the WD8003 and WD8013. These cards have the station
- address PROM at I/O ports <base>+8 to <base>+13, with a checksum
- following. A Soundblaster can have the same checksum as an WDethercard,
- so we have an extra exclusionary check for it.
-
- The wd_probe1() routine initializes the card and fills the
- station address field. */
-
-static int __init do_wd_probe(struct net_device *dev)
-{
- int i;
- struct resource *r;
- int base_addr = dev->base_addr;
- int irq = dev->irq;
- int mem_start = dev->mem_start;
- int mem_end = dev->mem_end;
-
- if (base_addr > 0x1ff) { /* Check a user specified location. */
- r = request_region(base_addr, WD_IO_EXTENT, "wd-probe");
- if ( r == NULL)
- return -EBUSY;
- i = wd_probe1(dev, base_addr);
- if (i != 0)
- release_region(base_addr, WD_IO_EXTENT);
- else
- r->name = dev->name;
- return i;
- }
- else if (base_addr != 0) /* Don't probe at all. */
- return -ENXIO;
-
- for (i = 0; wd_portlist[i]; i++) {
- int ioaddr = wd_portlist[i];
- r = request_region(ioaddr, WD_IO_EXTENT, "wd-probe");
- if (r == NULL)
- continue;
- if (wd_probe1(dev, ioaddr) == 0) {
- r->name = dev->name;
- return 0;
- }
- release_region(ioaddr, WD_IO_EXTENT);
- dev->irq = irq;
- dev->mem_start = mem_start;
- dev->mem_end = mem_end;
- }
-
- return -ENODEV;
-}
-
-#ifndef MODULE
-struct net_device * __init wd_probe(int unit)
-{
- struct net_device *dev = alloc_ei_netdev();
- int err;
-
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
-
- err = do_wd_probe(dev);
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-#endif
-
-static const struct net_device_ops wd_netdev_ops = {
- .ndo_open = wd_open,
- .ndo_stop = wd_close,
- .ndo_start_xmit = ei_start_xmit,
- .ndo_tx_timeout = ei_tx_timeout,
- .ndo_get_stats = ei_get_stats,
- .ndo_set_rx_mode = ei_set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = ei_poll,
-#endif
-};
-
-static int __init wd_probe1(struct net_device *dev, int ioaddr)
-{
- int i;
- int err;
- int checksum = 0;
- int ancient = 0; /* An old card without config registers. */
- int word16 = 0; /* 0 = 8 bit, 1 = 16 bit */
- u8 addr[ETH_ALEN];
- const char *model_name;
- static unsigned version_printed;
- struct ei_device *ei_local = netdev_priv(dev);
-
- for (i = 0; i < 8; i++)
- checksum += inb(ioaddr + 8 + i);
- if (inb(ioaddr + 8) == 0xff /* Extra check to avoid soundcard. */
- || inb(ioaddr + 9) == 0xff
- || (checksum & 0xff) != 0xFF)
- return -ENODEV;
-
- /* Check for semi-valid mem_start/end values if supplied. */
- if ((dev->mem_start % 0x2000) || (dev->mem_end % 0x2000)) {
- netdev_warn(dev,
- "wd.c: user supplied mem_start or mem_end not on 8kB boundary - ignored.\n");
- dev->mem_start = 0;
- dev->mem_end = 0;
- }
-
- if ((wd_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
- netdev_info(dev, version);
-
- for (i = 0; i < 6; i++)
- addr[i] = inb(ioaddr + 8 + i);
- eth_hw_addr_set(dev, addr);
-
- netdev_info(dev, "WD80x3 at %#3x, %pM", ioaddr, dev->dev_addr);
-
- /* The following PureData probe code was contributed by
- Mike Jagdis <jaggy@purplet.demon.co.uk>. Puredata does software
- configuration differently from others so we have to check for them.
- This detects an 8 bit, 16 bit or dumb (Toshiba, jumpered) card.
- */
- if (inb(ioaddr+0) == 'P' && inb(ioaddr+1) == 'D') {
- unsigned char reg5 = inb(ioaddr+5);
-
- switch (inb(ioaddr+2)) {
- case 0x03: word16 = 0; model_name = "PDI8023-8"; break;
- case 0x05: word16 = 0; model_name = "PDUC8023"; break;
- case 0x0a: word16 = 1; model_name = "PDI8023-16"; break;
- /* Either 0x01 (dumb) or they've released a new version. */
- default: word16 = 0; model_name = "PDI8023"; break;
- }
- dev->mem_start = ((reg5 & 0x1c) + 0xc0) << 12;
- dev->irq = (reg5 & 0xe0) == 0xe0 ? 10 : (reg5 >> 5) + 1;
- } else { /* End of PureData probe */
- /* This method of checking for a 16-bit board is borrowed from the
- we.c driver. A simpler method is just to look in ASIC reg. 0x03.
- I'm comparing the two method in alpha test to make certain they
- return the same result. */
- /* Check for the old 8 bit board - it has register 0/8 aliasing.
- Do NOT check i>=6 here -- it hangs the old 8003 boards! */
- for (i = 0; i < 6; i++)
- if (inb(ioaddr+i) != inb(ioaddr+8+i))
- break;
- if (i >= 6) {
- ancient = 1;
- model_name = "WD8003-old";
- word16 = 0;
- } else {
- int tmp = inb(ioaddr+1); /* fiddle with 16bit bit */
- outb( tmp ^ 0x01, ioaddr+1 ); /* attempt to clear 16bit bit */
- if (((inb( ioaddr+1) & 0x01) == 0x01) /* A 16 bit card */
- && (tmp & 0x01) == 0x01 ) { /* In a 16 slot. */
- int asic_reg5 = inb(ioaddr+WD_CMDREG5);
- /* Magic to set ASIC to word-wide mode. */
- outb( NIC16 | (asic_reg5&0x1f), ioaddr+WD_CMDREG5);
- outb(tmp, ioaddr+1);
- model_name = "WD8013";
- word16 = 1; /* We have a 16bit board here! */
- } else {
- model_name = "WD8003";
- word16 = 0;
- }
- outb(tmp, ioaddr+1); /* Restore original reg1 value. */
- }
-#ifndef final_version
- if ( !ancient && (inb(ioaddr+1) & 0x01) != (word16 & 0x01))
- pr_cont("\nWD80?3: Bus width conflict, %d (probe) != %d (reg report).",
- word16 ? 16 : 8,
- (inb(ioaddr+1) & 0x01) ? 16 : 8);
-#endif
- }
-
-#if defined(WD_SHMEM) && WD_SHMEM > 0x80000
- /* Allow a compile-time override. */
- dev->mem_start = WD_SHMEM;
-#else
- if (dev->mem_start == 0) {
- /* Sanity and old 8003 check */
- int reg0 = inb(ioaddr);
- if (reg0 == 0xff || reg0 == 0) {
- /* Future plan: this could check a few likely locations first. */
- dev->mem_start = 0xd0000;
- pr_cont(" assigning address %#lx", dev->mem_start);
- } else {
- int high_addr_bits = inb(ioaddr+WD_CMDREG5) & 0x1f;
- /* Some boards don't have the register 5 -- it returns 0xff. */
- if (high_addr_bits == 0x1f || word16 == 0)
- high_addr_bits = 0x01;
- dev->mem_start = ((reg0&0x3f) << 13) + (high_addr_bits << 19);
- }
- }
-#endif
-
- /* The 8390 isn't at the base address -- the ASIC regs are there! */
- dev->base_addr = ioaddr+WD_NIC_OFFSET;
-
- if (dev->irq < 2) {
- static const int irqmap[] = {9, 3, 5, 7, 10, 11, 15, 4};
- int reg1 = inb(ioaddr+1);
- int reg4 = inb(ioaddr+4);
- if (ancient || reg1 == 0xff) { /* Ack!! No way to read the IRQ! */
- short nic_addr = ioaddr+WD_NIC_OFFSET;
- unsigned long irq_mask;
-
- /* We have an old-style ethercard that doesn't report its IRQ
- line. Do autoirq to find the IRQ line. Note that this IS NOT
- a reliable way to trigger an interrupt. */
- outb_p(E8390_NODMA + E8390_STOP, nic_addr);
- outb(0x00, nic_addr+EN0_IMR); /* Disable all intrs. */
-
- irq_mask = probe_irq_on();
- outb_p(0xff, nic_addr + EN0_IMR); /* Enable all interrupts. */
- outb_p(0x00, nic_addr + EN0_RCNTLO);
- outb_p(0x00, nic_addr + EN0_RCNTHI);
- outb(E8390_RREAD+E8390_START, nic_addr); /* Trigger it... */
- mdelay(20);
- dev->irq = probe_irq_off(irq_mask);
-
- outb_p(0x00, nic_addr+EN0_IMR); /* Mask all intrs. again. */
-
- if (wd_msg_enable & NETIF_MSG_PROBE)
- pr_cont(" autoirq is %d", dev->irq);
- if (dev->irq < 2)
- dev->irq = word16 ? 10 : 5;
- } else
- dev->irq = irqmap[((reg4 >> 5) & 0x03) + (reg1 & 0x04)];
- } else if (dev->irq == 2) /* Fixup bogosity: IRQ2 is really IRQ9 */
- dev->irq = 9;
-
- /* Snarf the interrupt now. There's no point in waiting since we cannot
- share and the board will usually be enabled. */
- i = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
- if (i) {
- pr_cont(" unable to get IRQ %d.\n", dev->irq);
- return i;
- }
-
- /* OK, were are certain this is going to work. Setup the device. */
- ei_status.name = model_name;
- ei_status.word16 = word16;
- ei_status.tx_start_page = WD_START_PG;
- ei_status.rx_start_page = WD_START_PG + TX_PAGES;
-
- /* Don't map in the shared memory until the board is actually opened. */
-
- /* Some cards (eg WD8003EBT) can be jumpered for more (32k!) memory. */
- if (dev->mem_end != 0) {
- ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
- ei_status.priv = dev->mem_end - dev->mem_start;
- } else {
- ei_status.stop_page = word16 ? WD13_STOP_PG : WD03_STOP_PG;
- dev->mem_end = dev->mem_start + (ei_status.stop_page - WD_START_PG)*256;
- ei_status.priv = (ei_status.stop_page - WD_START_PG)*256;
- }
-
- ei_status.mem = ioremap(dev->mem_start, ei_status.priv);
- if (!ei_status.mem) {
- free_irq(dev->irq, dev);
- return -ENOMEM;
- }
-
- pr_cont(" %s, IRQ %d, shared memory at %#lx-%#lx.\n",
- model_name, dev->irq, dev->mem_start, dev->mem_end-1);
-
- ei_status.reset_8390 = wd_reset_8390;
- ei_status.block_input = wd_block_input;
- ei_status.block_output = wd_block_output;
- ei_status.get_8390_hdr = wd_get_8390_hdr;
-
- dev->netdev_ops = &wd_netdev_ops;
- NS8390_init(dev, 0);
- ei_local->msg_enable = wd_msg_enable;
-
-#if 1
- /* Enable interrupt generation on softconfig cards -- M.U */
- /* .. but possibly potentially unsafe - Donald */
- if (inb(ioaddr+14) & 0x20)
- outb(inb(ioaddr+4)|0x80, ioaddr+4);
-#endif
-
- err = register_netdev(dev);
- if (err) {
- free_irq(dev->irq, dev);
- iounmap(ei_status.mem);
- }
- return err;
-}
-
-static int
-wd_open(struct net_device *dev)
-{
- int ioaddr = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
-
- /* Map in the shared memory. Always set register 0 last to remain
- compatible with very old boards. */
- ei_status.reg0 = ((dev->mem_start>>13) & 0x3f) | WD_MEMENB;
- ei_status.reg5 = ((dev->mem_start>>19) & 0x1f) | NIC16;
-
- if (ei_status.word16)
- outb(ei_status.reg5, ioaddr+WD_CMDREG5);
- outb(ei_status.reg0, ioaddr); /* WD_CMDREG */
-
- return ei_open(dev);
-}
-
-static void
-wd_reset_8390(struct net_device *dev)
-{
- int wd_cmd_port = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
- struct ei_device *ei_local = netdev_priv(dev);
-
- outb(WD_RESET, wd_cmd_port);
- netif_dbg(ei_local, hw, dev, "resetting the WD80x3 t=%lu...\n",
- jiffies);
- ei_status.txing = 0;
-
- /* Set up the ASIC registers, just in case something changed them. */
- outb((((dev->mem_start>>13) & 0x3f)|WD_MEMENB), wd_cmd_port);
- if (ei_status.word16)
- outb(NIC16 | ((dev->mem_start>>19) & 0x1f), wd_cmd_port+WD_CMDREG5);
-
- netif_dbg(ei_local, hw, dev, "reset done\n");
-}
-
-/* Grab the 8390 specific header. Similar to the block_input routine, but
- we don't need to be concerned with ring wrap as the header will be at
- the start of a page, so we optimize accordingly. */
-
-static void
-wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
-{
-
- int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
- void __iomem *hdr_start = ei_status.mem + ((ring_page - WD_START_PG)<<8);
-
- /* We'll always get a 4 byte header read followed by a packet read, so
- we enable 16 bit mode before the header, and disable after the body. */
- if (ei_status.word16)
- outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
-
-#ifdef __BIG_ENDIAN
- /* Officially this is what we are doing, but the readl() is faster */
- /* unfortunately it isn't endian aware of the struct */
- memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
- hdr->count = le16_to_cpu(hdr->count);
-#else
- ((unsigned int*)hdr)[0] = readl(hdr_start);
-#endif
-}
-
-/* Block input and output are easy on shared memory ethercards, and trivial
- on the Western digital card where there is no choice of how to do it.
- The only complications are that the ring buffer wraps, and need to map
- switch between 8- and 16-bit modes. */
-
-static void
-wd_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
-{
- int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
- unsigned long offset = ring_offset - (WD_START_PG<<8);
- void __iomem *xfer_start = ei_status.mem + offset;
-
- if (offset + count > ei_status.priv) {
- /* We must wrap the input move. */
- int semi_count = ei_status.priv - offset;
- memcpy_fromio(skb->data, xfer_start, semi_count);
- count -= semi_count;
- memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
- } else {
- /* Packet is in one chunk -- we can copy + cksum. */
- memcpy_fromio(skb->data, xfer_start, count);
- }
-
- /* Turn off 16 bit access so that reboot works. ISA brain-damage */
- if (ei_status.word16)
- outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
-}
-
-static void
-wd_block_output(struct net_device *dev, int count, const unsigned char *buf,
- int start_page)
-{
- int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
- void __iomem *shmem = ei_status.mem + ((start_page - WD_START_PG)<<8);
-
-
- if (ei_status.word16) {
- /* Turn on and off 16 bit access so that reboot works. */
- outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
- memcpy_toio(shmem, buf, count);
- outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
- } else
- memcpy_toio(shmem, buf, count);
-}
-
-
-static int
-wd_close(struct net_device *dev)
-{
- int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
- struct ei_device *ei_local = netdev_priv(dev);
-
- netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
- ei_close(dev);
-
- /* Change from 16-bit to 8-bit shared memory so reboot works. */
- if (ei_status.word16)
- outb(ei_status.reg5, wd_cmdreg + WD_CMDREG5 );
-
- /* And disable the shared memory. */
- outb(ei_status.reg0 & ~WD_MEMENB, wd_cmdreg);
-
- return 0;
-}
-
-
-#ifdef MODULE
-#define MAX_WD_CARDS 4 /* Max number of wd cards per module */
-static struct net_device *dev_wd[MAX_WD_CARDS];
-static int io[MAX_WD_CARDS];
-static int irq[MAX_WD_CARDS];
-static int mem[MAX_WD_CARDS];
-static int mem_end[MAX_WD_CARDS]; /* for non std. mem size */
-
-module_param_hw_array(io, int, ioport, NULL, 0);
-module_param_hw_array(irq, int, irq, NULL, 0);
-module_param_hw_array(mem, int, iomem, NULL, 0);
-module_param_hw_array(mem_end, int, iomem, NULL, 0);
-module_param_named(msg_enable, wd_msg_enable, uint, 0444);
-MODULE_PARM_DESC(io, "I/O base address(es)");
-MODULE_PARM_DESC(irq, "IRQ number(s) (ignored for PureData boards)");
-MODULE_PARM_DESC(mem, "memory base address(es)(ignored for PureData boards)");
-MODULE_PARM_DESC(mem_end, "memory end address(es)");
-MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
-MODULE_DESCRIPTION("ISA Western Digital wd8003/wd8013 ; SMC Elite, Elite16 ethernet driver");
-MODULE_LICENSE("GPL");
-
-/* This is set up so that only a single autoprobe takes place per call.
-ISA device autoprobes on a running machine are not recommended. */
-
-static int __init wd_init_module(void)
-{
- struct net_device *dev;
- int this_dev, found = 0;
-
- for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
- if (io[this_dev] == 0) {
- if (this_dev != 0) break; /* only autoprobe 1st one */
- printk(KERN_NOTICE "wd.c: Presently autoprobing (not recommended) for a single card.\n");
- }
- dev = alloc_ei_netdev();
- if (!dev)
- break;
- dev->irq = irq[this_dev];
- dev->base_addr = io[this_dev];
- dev->mem_start = mem[this_dev];
- dev->mem_end = mem_end[this_dev];
- if (do_wd_probe(dev) == 0) {
- dev_wd[found++] = dev;
- continue;
- }
- free_netdev(dev);
- printk(KERN_WARNING "wd.c: No wd80x3 card found (i/o = 0x%x).\n", io[this_dev]);
- break;
- }
- if (found)
- return 0;
- return -ENXIO;
-}
-module_init(wd_init_module);
-
-static void cleanup_card(struct net_device *dev)
-{
- free_irq(dev->irq, dev);
- release_region(dev->base_addr - WD_NIC_OFFSET, WD_IO_EXTENT);
- iounmap(ei_status.mem);
-}
-
-static void __exit wd_cleanup_module(void)
-{
- int this_dev;
-
- for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
- struct net_device *dev = dev_wd[this_dev];
- if (dev) {
- unregister_netdev(dev);
- cleanup_card(dev);
- free_netdev(dev);
- }
- }
-}
-module_exit(wd_cleanup_module);
-#endif /* MODULE */
projects / thirdparty / linux.git / commitdiff
