748 lines
22 KiB
C
748 lines
22 KiB
C
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/* 3c503.c: A shared-memory NS8390 ethernet driver for linux. */
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/*
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Written 1992-94 by Donald Becker.
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Copyright 1993 United States Government as represented by the
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Director, National Security Agency. This software may be used and
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distributed according to the terms of the GNU General Public License,
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incorporated herein by reference.
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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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This driver should work with the 3c503 and 3c503/16. It should be used
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in shared memory mode for best performance, although it may also work
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in programmed-I/O mode.
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Sources:
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EtherLink II Technical Reference Manual,
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EtherLink II/16 Technical Reference Manual Supplement,
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3Com Corporation, 5400 Bayfront Plaza, Santa Clara CA 95052-8145
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The Crynwr 3c503 packet driver.
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Changelog:
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Paul Gortmaker : add support for the 2nd 8kB of RAM on 16 bit cards.
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Paul Gortmaker : multiple card support for module users.
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rjohnson@analogic.com : Fix up PIO interface for efficient operation.
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Jeff Garzik : ethtool support
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*/
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#define DRV_NAME "3c503"
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#define DRV_VERSION "1.10a"
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#define DRV_RELDATE "11/17/2001"
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static const char version[] =
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DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Donald Becker (becker@scyld.com)\n";
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/init.h>
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#include <linux/ethtool.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/byteorder.h>
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#include "8390.h"
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#include "3c503.h"
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#define WRD_COUNT 4
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static int el2_pio_probe(struct net_device *dev);
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static int el2_probe1(struct net_device *dev, int ioaddr);
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/* A zero-terminated list of I/O addresses to be probed in PIO mode. */
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static unsigned int netcard_portlist[] __initdata =
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{ 0x300,0x310,0x330,0x350,0x250,0x280,0x2a0,0x2e0,0};
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#define EL2_IO_EXTENT 16
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static int el2_open(struct net_device *dev);
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static int el2_close(struct net_device *dev);
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static void el2_reset_8390(struct net_device *dev);
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static void el2_init_card(struct net_device *dev);
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static void el2_block_output(struct net_device *dev, int count,
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const unsigned char *buf, int start_page);
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static void el2_block_input(struct net_device *dev, int count, struct sk_buff *skb,
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int ring_offset);
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static void el2_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
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int ring_page);
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static struct ethtool_ops netdev_ethtool_ops;
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/* This routine probes for a memory-mapped 3c503 board by looking for
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the "location register" at the end of the jumpered boot PROM space.
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This works even if a PROM isn't there.
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If the ethercard isn't found there is an optional probe for
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ethercard jumpered to programmed-I/O mode.
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*/
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static int __init do_el2_probe(struct net_device *dev)
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{
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int *addr, addrs[] = { 0xddffe, 0xd9ffe, 0xcdffe, 0xc9ffe, 0};
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int base_addr = dev->base_addr;
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int irq = dev->irq;
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SET_MODULE_OWNER(dev);
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if (base_addr > 0x1ff) /* Check a single specified location. */
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return el2_probe1(dev, base_addr);
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else if (base_addr != 0) /* Don't probe at all. */
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return -ENXIO;
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for (addr = addrs; *addr; addr++) {
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void __iomem *p = ioremap(*addr, 1);
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unsigned base_bits;
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int i;
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if (!p)
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continue;
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base_bits = readb(p);
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iounmap(p);
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i = ffs(base_bits) - 1;
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if (i == -1 || base_bits != (1 << i))
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continue;
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if (el2_probe1(dev, netcard_portlist[i]) == 0)
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return 0;
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dev->irq = irq;
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}
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#if ! defined(no_probe_nonshared_memory)
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return el2_pio_probe(dev);
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#else
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return -ENODEV;
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#endif
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|||
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|
}
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/* Try all of the locations that aren't obviously empty. This touches
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a lot of locations, and is much riskier than the code above. */
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static int __init
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el2_pio_probe(struct net_device *dev)
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{
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int i;
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int base_addr = dev->base_addr;
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int irq = dev->irq;
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if (base_addr > 0x1ff) /* Check a single specified location. */
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return el2_probe1(dev, base_addr);
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else if (base_addr != 0) /* Don't probe at all. */
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return -ENXIO;
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|||
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for (i = 0; netcard_portlist[i]; i++) {
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if (el2_probe1(dev, netcard_portlist[i]) == 0)
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return 0;
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dev->irq = irq;
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}
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return -ENODEV;
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}
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static void cleanup_card(struct net_device *dev)
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{
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/* NB: el2_close() handles free_irq */
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release_region(dev->base_addr, EL2_IO_EXTENT);
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if (ei_status.mem)
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iounmap(ei_status.mem);
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}
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#ifndef MODULE
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struct net_device * __init el2_probe(int unit)
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{
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struct net_device *dev = alloc_ei_netdev();
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int err;
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if (!dev)
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return ERR_PTR(-ENOMEM);
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sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
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err = do_el2_probe(dev);
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if (err)
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goto out;
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err = register_netdev(dev);
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if (err)
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goto out1;
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return dev;
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out1:
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cleanup_card(dev);
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out:
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free_netdev(dev);
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return ERR_PTR(err);
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}
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#endif
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/* Probe for the Etherlink II card at I/O port base IOADDR,
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returning non-zero on success. If found, set the station
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address and memory parameters in DEVICE. */
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static int __init
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el2_probe1(struct net_device *dev, int ioaddr)
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{
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int i, iobase_reg, membase_reg, saved_406, wordlength, retval;
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static unsigned version_printed;
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unsigned long vendor_id;
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if (!request_region(ioaddr, EL2_IO_EXTENT, DRV_NAME))
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return -EBUSY;
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if (!request_region(ioaddr + 0x400, 8, DRV_NAME)) {
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retval = -EBUSY;
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goto out;
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}
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/* Reset and/or avoid any lurking NE2000 */
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if (inb(ioaddr + 0x408) == 0xff) {
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mdelay(1);
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retval = -ENODEV;
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goto out1;
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}
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/* We verify that it's a 3C503 board by checking the first three octets
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of its ethernet address. */
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iobase_reg = inb(ioaddr+0x403);
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membase_reg = inb(ioaddr+0x404);
|
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/* ASIC location registers should be 0 or have only a single bit set. */
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if ( (iobase_reg & (iobase_reg - 1))
|
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|| (membase_reg & (membase_reg - 1))) {
|
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retval = -ENODEV;
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|||
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goto out1;
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|||
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}
|
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saved_406 = inb_p(ioaddr + 0x406);
|
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outb_p(ECNTRL_RESET|ECNTRL_THIN, ioaddr + 0x406); /* Reset it... */
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|||
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outb_p(ECNTRL_THIN, ioaddr + 0x406);
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/* Map the station addr PROM into the lower I/O ports. We now check
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for both the old and new 3Com prefix */
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outb(ECNTRL_SAPROM|ECNTRL_THIN, ioaddr + 0x406);
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vendor_id = inb(ioaddr)*0x10000 + inb(ioaddr + 1)*0x100 + inb(ioaddr + 2);
|
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if ((vendor_id != OLD_3COM_ID) && (vendor_id != NEW_3COM_ID)) {
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/* Restore the register we frobbed. */
|
|||
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outb(saved_406, ioaddr + 0x406);
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retval = -ENODEV;
|
|||
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goto out1;
|
|||
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}
|
|||
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|
|||
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if (ei_debug && version_printed++ == 0)
|
|||
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printk(version);
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dev->base_addr = ioaddr;
|
|||
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|||
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printk("%s: 3c503 at i/o base %#3x, node ", dev->name, ioaddr);
|
|||
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/* Retrieve and print the ethernet address. */
|
|||
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for (i = 0; i < 6; i++)
|
|||
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printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));
|
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/* Map the 8390 back into the window. */
|
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outb(ECNTRL_THIN, ioaddr + 0x406);
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/* Check for EL2/16 as described in tech. man. */
|
|||
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outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
|
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outb_p(0, ioaddr + EN0_DCFG);
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outb_p(E8390_PAGE2, ioaddr + E8390_CMD);
|
|||
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wordlength = inb_p(ioaddr + EN0_DCFG) & ENDCFG_WTS;
|
|||
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outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
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|
|||
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/* Probe for, turn on and clear the board's shared memory. */
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if (ei_debug > 2) printk(" memory jumpers %2.2x ", membase_reg);
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outb(EGACFR_NORM, ioaddr + 0x405); /* Enable RAM */
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|
|||
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/* This should be probed for (or set via an ioctl()) at run-time.
|
|||
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|
Right now we use a sleazy hack to pass in the interface number
|
|||
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|
at boot-time via the low bits of the mem_end field. That value is
|
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unused, and the low bits would be discarded even if it was used. */
|
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#if defined(EI8390_THICK) || defined(EL2_AUI)
|
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ei_status.interface_num = 1;
|
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#else
|
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ei_status.interface_num = dev->mem_end & 0xf;
|
|||
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#endif
|
|||
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printk(", using %sternal xcvr.\n", ei_status.interface_num == 0 ? "in" : "ex");
|
|||
|
|
|
|||
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|
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) {
|
|||
|
|
printk("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) {
|
|||
|
|
printk("3c503: configured interrupt %d invalid, will use autoIRQ.\n",
|
|||
|
|
dev->irq);
|
|||
|
|
dev->irq = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ei_status.saved_irq = dev->irq;
|
|||
|
|
|
|||
|
|
dev->open = &el2_open;
|
|||
|
|
dev->stop = &el2_close;
|
|||
|
|
dev->ethtool_ops = &netdev_ethtool_ops;
|
|||
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|||
|
|
dev->poll_controller = ei_poll;
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
if (dev->mem_start)
|
|||
|
|
printk("%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;
|
|||
|
|
printk("\n%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 int
|
|||
|
|
el2_open(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
int retval = -EAGAIN;
|
|||
|
|
|
|||
|
|
if (dev->irq < 2) {
|
|||
|
|
int irqlist[] = {5, 9, 3, 4, 0};
|
|||
|
|
int *irqp = irqlist;
|
|||
|
|
|
|||
|
|
outb(EGACFR_NORM, E33G_GACFR); /* Enable RAM and interrupts. */
|
|||
|
|
do {
|
|||
|
|
if (request_irq (*irqp, NULL, 0, "bogus", dev) != -EBUSY) {
|
|||
|
|
/* Twinkle the interrupt, and check if it's seen. */
|
|||
|
|
unsigned long cookie = probe_irq_on();
|
|||
|
|
outb_p(0x04 << ((*irqp == 9) ? 2 : *irqp), E33G_IDCFR);
|
|||
|
|
outb_p(0x00, E33G_IDCFR);
|
|||
|
|
if (*irqp == probe_irq_off(cookie) /* It's a good IRQ line! */
|
|||
|
|
&& ((retval = request_irq(dev->irq = *irqp,
|
|||
|
|
ei_interrupt, 0, dev->name, dev)) == 0))
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
} while (*++irqp);
|
|||
|
|
if (*irqp == 0) {
|
|||
|
|
outb(EGACFR_IRQOFF, E33G_GACFR); /* disable interrupts. */
|
|||
|
|
return retval;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev))) {
|
|||
|
|
return retval;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
el2_init_card(dev);
|
|||
|
|
ei_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. */
|
|||
|
|
|
|||
|
|
ei_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) {
|
|||
|
|
printk("%s: Resetting the 3c503 board...", dev->name);
|
|||
|
|
printk("%#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) printk("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--)
|
|||
|
|
{
|
|||
|
|
printk("%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);
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* 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--)
|
|||
|
|
{
|
|||
|
|
printk("%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 {
|
|||
|
|
/* Packet is in one chunk -- we can copy + cksum. */
|
|||
|
|
eth_io_copy_and_sum(skb, base + ring_offset, count, 0);
|
|||
|
|
}
|
|||
|
|
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--)
|
|||
|
|
{
|
|||
|
|
printk("%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);
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
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 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_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 */
|
|||
|
|
printk(KERN_NOTICE "3c503.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_end = xcvr[this_dev]; /* low 4bits = xcvr sel. */
|
|||
|
|
if (do_el2_probe(dev) == 0) {
|
|||
|
|
if (register_netdev(dev) == 0) {
|
|||
|
|
dev_el2[found++] = dev;
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
cleanup_card(dev);
|
|||
|
|
}
|
|||
|
|
free_netdev(dev);
|
|||
|
|
printk(KERN_WARNING "3c503.c: No 3c503 card found (i/o = 0x%x).\n", io[this_dev]);
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
if (found)
|
|||
|
|
return 0;
|
|||
|
|
return -ENXIO;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
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 */
|