+++ /dev/null
-/*
- es3210.c
-
- Linux driver for Racal-Interlan ES3210 EISA Network Adapter
-
- Copyright (C) 1996, Paul Gortmaker.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- Information and Code Sources:
-
- 1) The existing myriad of Linux 8390 drivers written by Donald Becker.
-
- 2) Once again Russ Nelson's asm packet driver provided additional info.
-
- 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
- Too bad it doesn't work -- see below.
-
- The ES3210 is an EISA shared memory NS8390 implementation. Note
- that all memory copies to/from the board must be 32bit transfers.
- Which rules out using eth_io_copy_and_sum() in this driver.
-
- Apparently there are two slightly different revisions of the
- card, since there are two distinct EISA cfg files (!rii0101.cfg
- and !rii0102.cfg) One has media select in the cfg file and the
- other doesn't. Hopefully this will work with either.
-
- That is about all I can tell you about it, having never actually
- even seen one of these cards. :) Try http://www.interlan.com
- if you want more info.
-
- Thanks go to Mark Salazar for testing v0.02 of this driver.
-
- Bugs, to-fix, etc:
-
- 1) The EISA cfg ports that are *supposed* to have the IRQ and shared
- mem values just read 0xff all the time. Hrrmpf. Apparently the
- same happens with the packet driver as the code for reading
- these registers is disabled there. In the meantime, boot with:
- ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
- shared memory detection. (The i/o port detection is okay.)
-
- 2) Module support currently untested. Probably works though.
-
-*/
-
-static const char version[] =
- "es3210.c: Driver revision v0.03, 14/09/96\n";
-
-#include <linux/module.h>
-#include <linux/eisa.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-
-#include <asm/io.h>
-#include <asm/system.h>
-
-#include "8390.h"
-
-static int es_probe1(struct net_device *dev, int ioaddr);
-
-static void es_reset_8390(struct net_device *dev);
-
-static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
-static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
-static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page);
-
-#define ES_START_PG 0x00 /* First page of TX buffer */
-#define ES_STOP_PG 0x40 /* Last page +1 of RX ring */
-
-#define ES_IO_EXTENT 0x37 /* The cfg file says 0xc90 -> 0xcc7 */
-#define ES_ID_PORT 0xc80 /* Same for all EISA cards */
-#define ES_SA_PROM 0xc90 /* Start of e'net addr. */
-#define ES_RESET_PORT 0xc84 /* From the packet driver source */
-#define ES_NIC_OFFSET 0xca0 /* Hello, the 8390 is *here* */
-
-#define ES_ADDR0 0x02 /* 3 byte vendor prefix */
-#define ES_ADDR1 0x07
-#define ES_ADDR2 0x01
-
-/*
- * Two card revisions. EISA ID's are always rev. minor, rev. major,, and
- * then the three vendor letters stored in 5 bits each, with an "a" = 1.
- * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
- * config utility determines automagically what config file(s) to use.
- */
-#define ES_EISA_ID1 0x01012949 /* !rii0101.cfg */
-#define ES_EISA_ID2 0x02012949 /* !rii0102.cfg */
-
-#define ES_CFG1 0xcc0 /* IOPORT(1) --> IOPORT(6) in cfg file */
-#define ES_CFG2 0xcc1
-#define ES_CFG3 0xcc2
-#define ES_CFG4 0xcc3
-#define ES_CFG5 0xcc4
-#define ES_CFG6 0xc84 /* NB: 0xc84 is also "reset" port. */
-
-/*
- * You can OR any of the following bits together and assign it
- * to ES_DEBUG to get verbose driver info during operation.
- * Some of these don't do anything yet.
- */
-
-#define ES_D_PROBE 0x01
-#define ES_D_RX_PKT 0x02
-#define ES_D_TX_PKT 0x04
-#define ED_D_IRQ 0x08
-
-#define ES_DEBUG 0
-
-static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
-static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};
-
-/*
- * Probe for the card. The best way is to read the EISA ID if it
- * is known. Then we check the prefix of the station address
- * PROM for a match against the Racal-Interlan assigned value.
- */
-
-static int __init do_es_probe(struct net_device *dev)
-{
- unsigned short ioaddr = dev->base_addr;
- int irq = dev->irq;
- int mem_start = dev->mem_start;
-
- if (ioaddr > 0x1ff) /* Check a single specified location. */
- return es_probe1(dev, ioaddr);
- else if (ioaddr > 0) /* Don't probe at all. */
- return -ENXIO;
-
- if (!EISA_bus) {
-#if ES_DEBUG & ES_D_PROBE
- printk("es3210.c: Not EISA bus. Not probing high ports.\n");
-#endif
- return -ENXIO;
- }
-
- /* EISA spec allows for up to 16 slots, but 8 is typical. */
- for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
- if (es_probe1(dev, ioaddr) == 0)
- return 0;
- dev->irq = irq;
- dev->mem_start = mem_start;
- }
-
- return -ENODEV;
-}
-
-#ifndef MODULE
-struct net_device * __init es_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_es_probe(dev);
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-#endif
-
-static int __init es_probe1(struct net_device *dev, int ioaddr)
-{
- int i, retval;
- unsigned long eisa_id;
-
- if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
- return -ENODEV;
-
-#if ES_DEBUG & ES_D_PROBE
- printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
- printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
- inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
- inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
-#endif
-
-/* Check the EISA ID of the card. */
- eisa_id = inl(ioaddr + ES_ID_PORT);
- if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
- retval = -ENODEV;
- goto out;
- }
-
- for (i = 0; i < ETHER_ADDR_LEN ; i++)
- dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i);
-
-/* Check the Racal vendor ID as well. */
- if (dev->dev_addr[0] != ES_ADDR0 ||
- dev->dev_addr[1] != ES_ADDR1 ||
- dev->dev_addr[2] != ES_ADDR2) {
- printk("es3210.c: card not found %pM (invalid_prefix).\n",
- dev->dev_addr);
- retval = -ENODEV;
- goto out;
- }
-
- printk("es3210.c: ES3210 rev. %ld at %#x, node %pM",
- eisa_id>>24, ioaddr, dev->dev_addr);
-
- /* Snarf the interrupt now. */
- if (dev->irq == 0) {
- unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
- unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
-
- if (hi_irq != 0) {
- dev->irq = hi_irq_map[hi_irq - 1];
- } else {
- int i = 0;
- while (lo_irq > (1<<i)) i++;
- dev->irq = lo_irq_map[i];
- }
- printk(" using IRQ %d", dev->irq);
-#if ES_DEBUG & ES_D_PROBE
- printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
- hi_irq, lo_irq, dev->irq);
-#endif
- } else {
- if (dev->irq == 2)
- dev->irq = 9; /* Doh! */
- printk(" assigning IRQ %d", dev->irq);
- }
-
- if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
- printk (" unable to get IRQ %d.\n", dev->irq);
- retval = -EAGAIN;
- goto out;
- }
-
- if (dev->mem_start == 0) {
- unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
- unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
-
- if (mem_enabled != 0x80) {
- printk(" shared mem disabled - giving up\n");
- retval = -ENXIO;
- goto out1;
- }
- dev->mem_start = 0xC0000 + mem_bits*0x4000;
- printk(" using ");
- } else {
- printk(" assigning ");
- }
-
- ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
- if (!ei_status.mem) {
- printk("ioremap failed - giving up\n");
- retval = -ENXIO;
- goto out1;
- }
-
- dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
-
- printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
-
-#if ES_DEBUG & ES_D_PROBE
- if (inb(ioaddr + ES_CFG5))
- printk("es3210: Warning - DMA channel enabled, but not used here.\n");
-#endif
- /* Note, point at the 8390, and not the card... */
- dev->base_addr = ioaddr + ES_NIC_OFFSET;
-
- ei_status.name = "ES3210";
- ei_status.tx_start_page = ES_START_PG;
- ei_status.rx_start_page = ES_START_PG + TX_PAGES;
- ei_status.stop_page = ES_STOP_PG;
- ei_status.word16 = 1;
-
- if (ei_debug > 0)
- printk(version);
-
- ei_status.reset_8390 = &es_reset_8390;
- ei_status.block_input = &es_block_input;
- ei_status.block_output = &es_block_output;
- ei_status.get_8390_hdr = &es_get_8390_hdr;
-
- dev->netdev_ops = &ei_netdev_ops;
- NS8390_init(dev, 0);
-
- retval = register_netdev(dev);
- if (retval)
- goto out1;
- return 0;
-out1:
- free_irq(dev->irq, dev);
-out:
- release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
- return retval;
-}
-
-/*
- * Reset as per the packet driver method. Judging by the EISA cfg
- * file, this just toggles the "Board Enable" bits (bit 2 and 0).
- */
-
-static void es_reset_8390(struct net_device *dev)
-{
- unsigned short ioaddr = dev->base_addr;
- unsigned long end;
-
- outb(0x04, ioaddr + ES_RESET_PORT);
- if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
-
- end = jiffies + 2*HZ/100;
- while ((signed)(end - jiffies) > 0) continue;
-
- ei_status.txing = 0;
- outb(0x01, ioaddr + ES_RESET_PORT);
- if (ei_debug > 1) printk("reset done\n");
-}
-
-/*
- * Note: In the following three functions is the implicit assumption
- * that the associated memcpy will only use "rep; movsl" as long as
- * we keep the counts as some multiple of doublewords. This is a
- * requirement of the hardware, and also prevents us from using
- * eth_io_copy_and_sum() since we can't guarantee it will limit
- * itself to doubleword access.
- */
-
-/*
- * 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. (A single doubleword.)
- */
-
-static void
-es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
-{
- void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
- memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
- hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
-}
-
-/*
- * Block input and output are easy on shared memory ethercards, the only
- * complication is when the ring buffer wraps. The count will already
- * be rounded up to a doubleword value via es_get_8390_hdr() above.
- */
-
-static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
- int ring_offset)
-{
- void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;
-
- if (ring_offset + count > ES_STOP_PG*256) {
- /* Packet wraps over end of ring buffer. */
- int semi_count = ES_STOP_PG*256 - ring_offset;
- memcpy_fromio(skb->data, xfer_start, semi_count);
- count -= semi_count;
- memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
- } else {
- /* Packet is in one chunk. */
- memcpy_fromio(skb->data, xfer_start, count);
- }
-}
-
-static void es_block_output(struct net_device *dev, int count,
- const unsigned char *buf, int start_page)
-{
- void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
-
- count = (count + 3) & ~3; /* Round up to doubleword */
- memcpy_toio(shmem, buf, count);
-}
-
-#ifdef MODULE
-#define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
-#define NAMELEN 8 /* # of chars for storing dev->name */
-static struct net_device *dev_es3210[MAX_ES_CARDS];
-static int io[MAX_ES_CARDS];
-static int irq[MAX_ES_CARDS];
-static int mem[MAX_ES_CARDS];
-
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
-module_param_array(mem, int, NULL, 0);
-MODULE_PARM_DESC(io, "I/O base address(es)");
-MODULE_PARM_DESC(irq, "IRQ number(s)");
-MODULE_PARM_DESC(mem, "memory base address(es)");
-MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
-MODULE_LICENSE("GPL");
-
-int __init init_module(void)
-{
- struct net_device *dev;
- int this_dev, found = 0;
-
- for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
- if (io[this_dev] == 0 && this_dev != 0)
- break;
- dev = alloc_ei_netdev();
- if (!dev)
- break;
- dev->irq = irq[this_dev];
- dev->base_addr = io[this_dev];
- dev->mem_start = mem[this_dev];
- if (do_es_probe(dev) == 0) {
- dev_es3210[found++] = dev;
- continue;
- }
- free_netdev(dev);
- printk(KERN_WARNING "es3210.c: No es3210 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)
-{
- free_irq(dev->irq, dev);
- release_region(dev->base_addr, ES_IO_EXTENT);
- iounmap(ei_status.mem);
-}
-
-void __exit
-cleanup_module(void)
-{
- int this_dev;
-
- for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
- struct net_device *dev = dev_es3210[this_dev];
- if (dev) {
- unregister_netdev(dev);
- cleanup_card(dev);
- free_netdev(dev);
- }
- }
-}
-#endif /* MODULE */
-
git.openpandora.org / pandora-kernel.git / blobdiff