446 lines
12 KiB
C
446 lines
12 KiB
C
/*
|
|
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/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 */
|
|
|