summaryrefslogtreecommitdiff
path: root/drivers/net/3c503.c
diff options
context:
space:
mode:
authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-04-02 06:20:12 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 19:54:25 -0700
commit644570b830266ff33ff5f3542b9c838f93a55ea6 (patch)
treeb19c680ce1b1e4cd15465c74aa335459068c033f /drivers/net/3c503.c
parentb955f6ca776f3bab3d1e2c5fb1d247b203cbda14 (diff)
8390: Move the 8390 related drivers
Moves the drivers for the National Semi-conductor 8390 chipset into drivers/net/ethernet/8390/ and the necessary Kconfig and Makefile changes. CC: Donald Becker <becker@scyld.com> CC: Paul Gortmaker <paul.gortmaker@windriver.com> CC: Alain Malek <alain.malek@cryogen.com> CC: Peter De Schrijver <p2@mind.be> CC: "David Huggins-Daines" <dhd@debian.org> CC: Wim Dumon <wimpie@kotnet.org> CC: Yoshinori Sato <ysato@users.sourceforge.jp> CC: David Hinds <dahinds@users.sourceforge.net> CC: Russell King <linux@arm.linux.org.uk> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/3c503.c')
-rw-r--r--drivers/net/3c503.c778
1 files changed, 0 insertions, 778 deletions
diff --git a/drivers/net/3c503.c b/drivers/net/3c503.c
deleted file mode 100644
index 84e68f1b9adf..000000000000
--- a/drivers/net/3c503.c
+++ /dev/null
@@ -1,778 +0,0 @@
-/* 3c503.c: A shared-memory NS8390 ethernet driver for linux. */
-/*
- Written 1992-94 by Donald Becker.
-
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency. This software may be used and
- distributed according to the terms of the GNU General Public License,
- incorporated herein by reference.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
-
- This driver should work with the 3c503 and 3c503/16. It should be used
- in shared memory mode for best performance, although it may also work
- in programmed-I/O mode.
-
- Sources:
- EtherLink II Technical Reference Manual,
- EtherLink II/16 Technical Reference Manual Supplement,
- 3Com Corporation, 5400 Bayfront Plaza, Santa Clara CA 95052-8145
-
- The Crynwr 3c503 packet driver.
-
- Changelog:
-
- Paul Gortmaker : add support for the 2nd 8kB of RAM on 16 bit cards.
- Paul Gortmaker : multiple card support for module users.
- rjohnson@analogic.com : Fix up PIO interface for efficient operation.
- Jeff Garzik : ethtool support
-
-*/
-
-#define DRV_NAME "3c503"
-#define DRV_VERSION "1.10a"
-#define DRV_RELDATE "11/17/2001"
-
-
-static const char version[] =
- DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Donald Becker (becker@scyld.com)\n";
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ethtool.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/byteorder.h>
-
-#include "8390.h"
-#include "3c503.h"
-#define WRD_COUNT 4
-
-static int el2_pio_probe(struct net_device *dev);
-static int el2_probe1(struct net_device *dev, int ioaddr);
-
-/* A zero-terminated list of I/O addresses to be probed in PIO mode. */
-static unsigned int netcard_portlist[] __initdata =
- { 0x300,0x310,0x330,0x350,0x250,0x280,0x2a0,0x2e0,0};
-
-#define EL2_IO_EXTENT 16
-
-static int el2_open(struct net_device *dev);
-static int el2_close(struct net_device *dev);
-static void el2_reset_8390(struct net_device *dev);
-static void el2_init_card(struct net_device *dev);
-static void el2_block_output(struct net_device *dev, int count,
- const unsigned char *buf, int start_page);
-static void el2_block_input(struct net_device *dev, int count, struct sk_buff *skb,
- int ring_offset);
-static void el2_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
- int ring_page);
-static const struct ethtool_ops netdev_ethtool_ops;
-
-
-/* This routine probes for a memory-mapped 3c503 board by looking for
- the "location register" at the end of the jumpered boot PROM space.
- This works even if a PROM isn't there.
-
- If the ethercard isn't found there is an optional probe for
- ethercard jumpered to programmed-I/O mode.
- */
-static int __init do_el2_probe(struct net_device *dev)
-{
- int *addr, addrs[] = { 0xddffe, 0xd9ffe, 0xcdffe, 0xc9ffe, 0};
- int base_addr = dev->base_addr;
- int irq = dev->irq;
-
- if (base_addr > 0x1ff) /* Check a single specified location. */
- return el2_probe1(dev, base_addr);
- else if (base_addr != 0) /* Don't probe at all. */
- return -ENXIO;
-
- for (addr = addrs; *addr; addr++) {
- void __iomem *p = ioremap(*addr, 1);
- unsigned base_bits;
- int i;
-
- if (!p)
- continue;
- base_bits = readb(p);
- iounmap(p);
- i = ffs(base_bits) - 1;
- if (i == -1 || base_bits != (1 << i))
- continue;
- if (el2_probe1(dev, netcard_portlist[i]) == 0)
- return 0;
- dev->irq = irq;
- }
-#if ! defined(no_probe_nonshared_memory)
- return el2_pio_probe(dev);
-#else
- return -ENODEV;
-#endif
-}
-
-/* Try all of the locations that aren't obviously empty. This touches
- a lot of locations, and is much riskier than the code above. */
-static int __init
-el2_pio_probe(struct net_device *dev)
-{
- int i;
- int base_addr = dev->base_addr;
- int irq = dev->irq;
-
- if (base_addr > 0x1ff) /* Check a single specified location. */
- return el2_probe1(dev, base_addr);
- else if (base_addr != 0) /* Don't probe at all. */
- return -ENXIO;
-
- for (i = 0; netcard_portlist[i]; i++) {
- if (el2_probe1(dev, netcard_portlist[i]) == 0)
- return 0;
- dev->irq = irq;
- }
-
- return -ENODEV;
-}
-
-#ifndef MODULE
-struct net_device * __init el2_probe(int unit)
-{
- struct net_device *dev = alloc_eip_netdev();
- int err;
-
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
-
- err = do_el2_probe(dev);
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-#endif
-
-static const struct net_device_ops el2_netdev_ops = {
- .ndo_open = el2_open,
- .ndo_stop = el2_close,
-
- .ndo_start_xmit = eip_start_xmit,
- .ndo_tx_timeout = eip_tx_timeout,
- .ndo_get_stats = eip_get_stats,
- .ndo_set_multicast_list = eip_set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_change_mtu = eth_change_mtu,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = eip_poll,
-#endif
-};
-
-/* Probe for the Etherlink II card at I/O port base IOADDR,
- returning non-zero on success. If found, set the station
- address and memory parameters in DEVICE. */
-static int __init
-el2_probe1(struct net_device *dev, int ioaddr)
-{
- int i, iobase_reg, membase_reg, saved_406, wordlength, retval;
- static unsigned version_printed;
- unsigned long vendor_id;
-
- if (!request_region(ioaddr, EL2_IO_EXTENT, DRV_NAME))
- return -EBUSY;
-
- if (!request_region(ioaddr + 0x400, 8, DRV_NAME)) {
- retval = -EBUSY;
- goto out;
- }
-
- /* Reset and/or avoid any lurking NE2000 */
- if (inb(ioaddr + 0x408) == 0xff) {
- mdelay(1);
- retval = -ENODEV;
- goto out1;
- }
-
- /* We verify that it's a 3C503 board by checking the first three octets
- of its ethernet address. */
- iobase_reg = inb(ioaddr+0x403);
- membase_reg = inb(ioaddr+0x404);
- /* ASIC location registers should be 0 or have only a single bit set. */
- if ((iobase_reg & (iobase_reg - 1)) ||
- (membase_reg & (membase_reg - 1))) {
- retval = -ENODEV;
- goto out1;
- }
- saved_406 = inb_p(ioaddr + 0x406);
- outb_p(ECNTRL_RESET|ECNTRL_THIN, ioaddr + 0x406); /* Reset it... */
- outb_p(ECNTRL_THIN, ioaddr + 0x406);
- /* Map the station addr PROM into the lower I/O ports. We now check
- for both the old and new 3Com prefix */
- outb(ECNTRL_SAPROM|ECNTRL_THIN, ioaddr + 0x406);
- vendor_id = inb(ioaddr)*0x10000 + inb(ioaddr + 1)*0x100 + inb(ioaddr + 2);
- if ((vendor_id != OLD_3COM_ID) && (vendor_id != NEW_3COM_ID)) {
- /* Restore the register we frobbed. */
- outb(saved_406, ioaddr + 0x406);
- retval = -ENODEV;
- goto out1;
- }
-
- if (ei_debug && version_printed++ == 0)
- pr_debug("%s", version);
-
- dev->base_addr = ioaddr;
-
- pr_info("%s: 3c503 at i/o base %#3x, node ", dev->name, ioaddr);
-
- /* Retrieve and print the ethernet address. */
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = inb(ioaddr + i);
- pr_cont("%pM", dev->dev_addr);
-
- /* Map the 8390 back into the window. */
- outb(ECNTRL_THIN, ioaddr + 0x406);
-
- /* Check for EL2/16 as described in tech. man. */
- outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
- outb_p(0, ioaddr + EN0_DCFG);
- outb_p(E8390_PAGE2, ioaddr + E8390_CMD);
- wordlength = inb_p(ioaddr + EN0_DCFG) & ENDCFG_WTS;
- outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
-
- /* Probe for, turn on and clear the board's shared memory. */
- if (ei_debug > 2)
- pr_cont(" memory jumpers %2.2x ", membase_reg);
- outb(EGACFR_NORM, ioaddr + 0x405); /* Enable RAM */
-
- /* This should be probed for (or set via an ioctl()) at run-time.
- Right now we use a sleazy hack to pass in the interface number
- at boot-time via the low bits of the mem_end field. That value is
- unused, and the low bits would be discarded even if it was used. */
-#if defined(EI8390_THICK) || defined(EL2_AUI)
- ei_status.interface_num = 1;
-#else
- ei_status.interface_num = dev->mem_end & 0xf;
-#endif
- pr_cont(", using %sternal xcvr.\n", ei_status.interface_num == 0 ? "in" : "ex");
-
- if ((membase_reg & 0xf0) == 0) {
- dev->mem_start = 0;
- ei_status.name = "3c503-PIO";
- ei_status.mem = NULL;
- } else {
- dev->mem_start = ((membase_reg & 0xc0) ? 0xD8000 : 0xC8000) +
- ((membase_reg & 0xA0) ? 0x4000 : 0);
-#define EL2_MEMSIZE (EL2_MB1_STOP_PG - EL2_MB1_START_PG)*256
- ei_status.mem = ioremap(dev->mem_start, EL2_MEMSIZE);
-
-#ifdef EL2MEMTEST
- /* This has never found an error, but someone might care.
- Note that it only tests the 2nd 8kB on 16kB 3c503/16
- cards between card addr. 0x2000 and 0x3fff. */
- { /* Check the card's memory. */
- void __iomem *mem_base = ei_status.mem;
- unsigned int test_val = 0xbbadf00d;
- writel(0xba5eba5e, mem_base);
- for (i = sizeof(test_val); i < EL2_MEMSIZE; i+=sizeof(test_val)) {
- writel(test_val, mem_base + i);
- if (readl(mem_base) != 0xba5eba5e ||
- readl(mem_base + i) != test_val) {
- pr_warning("3c503: memory failure or memory address conflict.\n");
- dev->mem_start = 0;
- ei_status.name = "3c503-PIO";
- iounmap(mem_base);
- ei_status.mem = NULL;
- break;
- }
- test_val += 0x55555555;
- writel(0, mem_base + i);
- }
- }
-#endif /* EL2MEMTEST */
-
- if (dev->mem_start)
- dev->mem_end = dev->mem_start + EL2_MEMSIZE;
-
- if (wordlength) { /* No Tx pages to skip over to get to Rx */
- ei_status.priv = 0;
- ei_status.name = "3c503/16";
- } else {
- ei_status.priv = TX_PAGES * 256;
- ei_status.name = "3c503";
- }
- }
-
- /*
- Divide up the memory on the card. This is the same regardless of
- whether shared-mem or PIO is used. For 16 bit cards (16kB RAM),
- we use the entire 8k of bank1 for an Rx ring. We only use 3k
- of the bank0 for 2 full size Tx packet slots. For 8 bit cards,
- (8kB RAM) we use 3kB of bank1 for two Tx slots, and the remaining
- 5kB for an Rx ring. */
-
- if (wordlength) {
- ei_status.tx_start_page = EL2_MB0_START_PG;
- ei_status.rx_start_page = EL2_MB1_START_PG;
- } else {
- ei_status.tx_start_page = EL2_MB1_START_PG;
- ei_status.rx_start_page = EL2_MB1_START_PG + TX_PAGES;
- }
-
- /* Finish setting the board's parameters. */
- ei_status.stop_page = EL2_MB1_STOP_PG;
- ei_status.word16 = wordlength;
- ei_status.reset_8390 = el2_reset_8390;
- ei_status.get_8390_hdr = el2_get_8390_hdr;
- ei_status.block_input = el2_block_input;
- ei_status.block_output = el2_block_output;
-
- if (dev->irq == 2)
- dev->irq = 9;
- else if (dev->irq > 5 && dev->irq != 9) {
- pr_warning("3c503: configured interrupt %d invalid, will use autoIRQ.\n",
- dev->irq);
- dev->irq = 0;
- }
-
- ei_status.saved_irq = dev->irq;
-
- dev->netdev_ops = &el2_netdev_ops;
- dev->ethtool_ops = &netdev_ethtool_ops;
-
- retval = register_netdev(dev);
- if (retval)
- goto out1;
-
- if (dev->mem_start)
- pr_info("%s: %s - %dkB RAM, 8kB shared mem window at %#6lx-%#6lx.\n",
- dev->name, ei_status.name, (wordlength+1)<<3,
- dev->mem_start, dev->mem_end-1);
-
- else
- {
- ei_status.tx_start_page = EL2_MB1_START_PG;
- ei_status.rx_start_page = EL2_MB1_START_PG + TX_PAGES;
- pr_info("%s: %s, %dkB RAM, using programmed I/O (REJUMPER for SHARED MEMORY).\n",
- dev->name, ei_status.name, (wordlength+1)<<3);
- }
- release_region(ioaddr + 0x400, 8);
- return 0;
-out1:
- release_region(ioaddr + 0x400, 8);
-out:
- release_region(ioaddr, EL2_IO_EXTENT);
- return retval;
-}
-
-static irqreturn_t el2_probe_interrupt(int irq, void *seen)
-{
- *(bool *)seen = true;
- return IRQ_HANDLED;
-}
-
-static int
-el2_open(struct net_device *dev)
-{
- int retval;
-
- if (dev->irq < 2) {
- static const int irqlist[] = {5, 9, 3, 4, 0};
- const int *irqp = irqlist;
-
- outb(EGACFR_NORM, E33G_GACFR); /* Enable RAM and interrupts. */
- do {
- bool seen;
-
- retval = request_irq(*irqp, el2_probe_interrupt, 0,
- dev->name, &seen);
- if (retval == -EBUSY)
- continue;
- if (retval < 0)
- goto err_disable;
-
- /* Twinkle the interrupt, and check if it's seen. */
- seen = false;
- smp_wmb();
- outb_p(0x04 << ((*irqp == 9) ? 2 : *irqp), E33G_IDCFR);
- outb_p(0x00, E33G_IDCFR);
- msleep(1);
- free_irq(*irqp, &seen);
- if (!seen)
- continue;
-
- retval = request_irq(dev->irq = *irqp, eip_interrupt, 0,
- dev->name, dev);
- if (retval == -EBUSY)
- continue;
- if (retval < 0)
- goto err_disable;
- break;
- } while (*++irqp);
-
- if (*irqp == 0) {
- err_disable:
- outb(EGACFR_IRQOFF, E33G_GACFR); /* disable interrupts. */
- return -EAGAIN;
- }
- } else {
- if ((retval = request_irq(dev->irq, eip_interrupt, 0, dev->name, dev))) {
- return retval;
- }
- }
-
- el2_init_card(dev);
- eip_open(dev);
- return 0;
-}
-
-static int
-el2_close(struct net_device *dev)
-{
- free_irq(dev->irq, dev);
- dev->irq = ei_status.saved_irq;
- outb(EGACFR_IRQOFF, E33G_GACFR); /* disable interrupts. */
-
- eip_close(dev);
- return 0;
-}
-
-/* This is called whenever we have a unrecoverable failure:
- transmit timeout
- Bad ring buffer packet header
- */
-static void
-el2_reset_8390(struct net_device *dev)
-{
- if (ei_debug > 1) {
- pr_debug("%s: Resetting the 3c503 board...", dev->name);
- pr_cont(" %#lx=%#02x %#lx=%#02x %#lx=%#02x...", E33G_IDCFR, inb(E33G_IDCFR),
- E33G_CNTRL, inb(E33G_CNTRL), E33G_GACFR, inb(E33G_GACFR));
- }
- outb_p(ECNTRL_RESET|ECNTRL_THIN, E33G_CNTRL);
- ei_status.txing = 0;
- outb_p(ei_status.interface_num==0 ? ECNTRL_THIN : ECNTRL_AUI, E33G_CNTRL);
- el2_init_card(dev);
- if (ei_debug > 1)
- pr_cont("done\n");
-}
-
-/* Initialize the 3c503 GA registers after a reset. */
-static void
-el2_init_card(struct net_device *dev)
-{
- /* Unmap the station PROM and select the DIX or BNC connector. */
- outb_p(ei_status.interface_num==0 ? ECNTRL_THIN : ECNTRL_AUI, E33G_CNTRL);
-
- /* Set ASIC copy of rx's first and last+1 buffer pages */
- /* These must be the same as in the 8390. */
- outb(ei_status.rx_start_page, E33G_STARTPG);
- outb(ei_status.stop_page, E33G_STOPPG);
-
- /* Point the vector pointer registers somewhere ?harmless?. */
- outb(0xff, E33G_VP2); /* Point at the ROM restart location 0xffff0 */
- outb(0xff, E33G_VP1);
- outb(0x00, E33G_VP0);
- /* Turn off all interrupts until we're opened. */
- outb_p(0x00, dev->base_addr + EN0_IMR);
- /* Enable IRQs iff started. */
- outb(EGACFR_NORM, E33G_GACFR);
-
- /* Set the interrupt line. */
- outb_p((0x04 << (dev->irq == 9 ? 2 : dev->irq)), E33G_IDCFR);
- outb_p((WRD_COUNT << 1), E33G_DRQCNT); /* Set burst size to 8 */
- outb_p(0x20, E33G_DMAAH); /* Put a valid addr in the GA DMA */
- outb_p(0x00, E33G_DMAAL);
- return; /* We always succeed */
-}
-
-/*
- * Either use the shared memory (if enabled on the board) or put the packet
- * out through the ASIC FIFO.
- */
-static void
-el2_block_output(struct net_device *dev, int count,
- const unsigned char *buf, int start_page)
-{
- unsigned short int *wrd;
- int boguscount; /* timeout counter */
- unsigned short word; /* temporary for better machine code */
- void __iomem *base = ei_status.mem;
-
- if (ei_status.word16) /* Tx packets go into bank 0 on EL2/16 card */
- outb(EGACFR_RSEL|EGACFR_TCM, E33G_GACFR);
- else
- outb(EGACFR_NORM, E33G_GACFR);
-
- if (base) { /* Shared memory transfer */
- memcpy_toio(base + ((start_page - ei_status.tx_start_page) << 8),
- buf, count);
- outb(EGACFR_NORM, E33G_GACFR); /* Back to bank1 in case on bank0 */
- return;
- }
-
-/*
- * No shared memory, put the packet out the other way.
- * Set up then start the internal memory transfer to Tx Start Page
- */
-
- word = (unsigned short)start_page;
- outb(word&0xFF, E33G_DMAAH);
- outb(word>>8, E33G_DMAAL);
-
- outb_p((ei_status.interface_num ? ECNTRL_AUI : ECNTRL_THIN ) | ECNTRL_OUTPUT
- | ECNTRL_START, E33G_CNTRL);
-
-/*
- * Here I am going to write data to the FIFO as quickly as possible.
- * Note that E33G_FIFOH is defined incorrectly. It is really
- * E33G_FIFOL, the lowest port address for both the byte and
- * word write. Variable 'count' is NOT checked. Caller must supply a
- * valid count. Note that I may write a harmless extra byte to the
- * 8390 if the byte-count was not even.
- */
- wrd = (unsigned short int *) buf;
- count = (count + 1) >> 1;
- for(;;)
- {
- boguscount = 0x1000;
- while ((inb(E33G_STATUS) & ESTAT_DPRDY) == 0)
- {
- if(!boguscount--)
- {
- pr_notice("%s: FIFO blocked in el2_block_output.\n", dev->name);
- el2_reset_8390(dev);
- goto blocked;
- }
- }
- if(count > WRD_COUNT)
- {
- outsw(E33G_FIFOH, wrd, WRD_COUNT);
- wrd += WRD_COUNT;
- count -= WRD_COUNT;
- }
- else
- {
- outsw(E33G_FIFOH, wrd, count);
- break;
- }
- }
- blocked:;
- outb_p(ei_status.interface_num==0 ? ECNTRL_THIN : ECNTRL_AUI, E33G_CNTRL);
-}
-
-/* Read the 4 byte, page aligned 8390 specific header. */
-static void
-el2_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
-{
- int boguscount;
- void __iomem *base = ei_status.mem;
- unsigned short word;
-
- if (base) { /* Use the shared memory. */
- void __iomem *hdr_start = base + ((ring_page - EL2_MB1_START_PG)<<8);
- memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
- hdr->count = le16_to_cpu(hdr->count);
- return;
- }
-
-/*
- * No shared memory, use programmed I/O.
- */
-
- word = (unsigned short)ring_page;
- outb(word&0xFF, E33G_DMAAH);
- outb(word>>8, E33G_DMAAL);
-
- outb_p((ei_status.interface_num == 0 ? ECNTRL_THIN : ECNTRL_AUI) | ECNTRL_INPUT
- | ECNTRL_START, E33G_CNTRL);
- boguscount = 0x1000;
- while ((inb(E33G_STATUS) & ESTAT_DPRDY) == 0)
- {
- if(!boguscount--)
- {
- pr_notice("%s: FIFO blocked in el2_get_8390_hdr.\n", dev->name);
- memset(hdr, 0x00, sizeof(struct e8390_pkt_hdr));
- el2_reset_8390(dev);
- goto blocked;
- }
- }
- insw(E33G_FIFOH, hdr, (sizeof(struct e8390_pkt_hdr))>> 1);
- blocked:;
- outb_p(ei_status.interface_num == 0 ? ECNTRL_THIN : ECNTRL_AUI, E33G_CNTRL);
-}
-
-
-static void
-el2_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
-{
- int boguscount = 0;
- void __iomem *base = ei_status.mem;
- unsigned short int *buf;
- unsigned short word;
-
- /* Maybe enable shared memory just be to be safe... nahh.*/
- if (base) { /* Use the shared memory. */
- ring_offset -= (EL2_MB1_START_PG<<8);
- if (ring_offset + count > EL2_MEMSIZE) {
- /* We must wrap the input move. */
- int semi_count = EL2_MEMSIZE - ring_offset;
- memcpy_fromio(skb->data, base + ring_offset, semi_count);
- count -= semi_count;
- memcpy_fromio(skb->data + semi_count, base + ei_status.priv, count);
- } else {
- memcpy_fromio(skb->data, base + ring_offset, count);
- }
- return;
- }
-
-/*
- * No shared memory, use programmed I/O.
- */
- word = (unsigned short) ring_offset;
- outb(word>>8, E33G_DMAAH);
- outb(word&0xFF, E33G_DMAAL);
-
- outb_p((ei_status.interface_num == 0 ? ECNTRL_THIN : ECNTRL_AUI) | ECNTRL_INPUT
- | ECNTRL_START, E33G_CNTRL);
-
-/*
- * Here I also try to get data as fast as possible. I am betting that I
- * can read one extra byte without clobbering anything in the kernel because
- * this would only occur on an odd byte-count and allocation of skb->data
- * is word-aligned. Variable 'count' is NOT checked. Caller must check
- * for a valid count.
- * [This is currently quite safe.... but if one day the 3c503 explodes
- * you know where to come looking ;)]
- */
-
- buf = (unsigned short int *) skb->data;
- count = (count + 1) >> 1;
- for(;;)
- {
- boguscount = 0x1000;
- while ((inb(E33G_STATUS) & ESTAT_DPRDY) == 0)
- {
- if(!boguscount--)
- {
- pr_notice("%s: FIFO blocked in el2_block_input.\n", dev->name);
- el2_reset_8390(dev);
- goto blocked;
- }
- }
- if(count > WRD_COUNT)
- {
- insw(E33G_FIFOH, buf, WRD_COUNT);
- buf += WRD_COUNT;
- count -= WRD_COUNT;
- }
- else
- {
- insw(E33G_FIFOH, buf, count);
- break;
- }
- }
- blocked:;
- outb_p(ei_status.interface_num == 0 ? ECNTRL_THIN : ECNTRL_AUI, E33G_CNTRL);
-}
-
-
-static void netdev_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strcpy(info->driver, DRV_NAME);
- strcpy(info->version, DRV_VERSION);
- sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr);
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
- .get_drvinfo = netdev_get_drvinfo,
-};
-
-#ifdef MODULE
-#define MAX_EL2_CARDS 4 /* Max number of EL2 cards per module */
-
-static struct net_device *dev_el2[MAX_EL2_CARDS];
-static int io[MAX_EL2_CARDS];
-static int irq[MAX_EL2_CARDS];
-static int xcvr[MAX_EL2_CARDS]; /* choose int. or ext. xcvr */
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
-module_param_array(xcvr, int, NULL, 0);
-MODULE_PARM_DESC(io, "I/O base address(es)");
-MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
-MODULE_PARM_DESC(xcvr, "transceiver(s) (0=internal, 1=external)");
-MODULE_DESCRIPTION("3Com ISA EtherLink II, II/16 (3c503, 3c503/16) 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. */
-int __init
-init_module(void)
-{
- struct net_device *dev;
- int this_dev, found = 0;
-
- for (this_dev = 0; this_dev < MAX_EL2_CARDS; this_dev++) {
- if (io[this_dev] == 0) {
- if (this_dev != 0) break; /* only autoprobe 1st one */
- pr_notice("3c503.c: Presently autoprobing (not recommended) for a single card.\n");
- }
- dev = alloc_eip_netdev();
- if (!dev)
- break;
- dev->irq = irq[this_dev];
- dev->base_addr = io[this_dev];
- dev->mem_end = xcvr[this_dev]; /* low 4bits = xcvr sel. */
- if (do_el2_probe(dev) == 0) {
- dev_el2[found++] = dev;
- continue;
- }
- free_netdev(dev);
- pr_warning("3c503.c: No 3c503 card found (i/o = 0x%x).\n", io[this_dev]);
- break;
- }
- if (found)
- return 0;
- return -ENXIO;
-}
-
-static void cleanup_card(struct net_device *dev)
-{
- /* NB: el2_close() handles free_irq */
- release_region(dev->base_addr, EL2_IO_EXTENT);
- if (ei_status.mem)
- iounmap(ei_status.mem);
-}
-
-void __exit
-cleanup_module(void)
-{
- int this_dev;
-
- for (this_dev = 0; this_dev < MAX_EL2_CARDS; this_dev++) {
- struct net_device *dev = dev_el2[this_dev];
- if (dev) {
- unregister_netdev(dev);
- cleanup_card(dev);
- free_netdev(dev);
- }
- }
-}
-#endif /* MODULE */