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/* smc-mca.c: A SMC Ultra ethernet driver for linux. */
/*
Most of this driver, except for ultramca_probe is nearly
verbatim from smc-ultra.c by Donald Becker. The rest is
written and copyright 1996 by David Weis, weisd3458@uni.edu
This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
This driver uses the cards in the 8390-compatible, shared memory mode.
Most of the run-time complexity is handled by the generic code in
8390.c.
This driver enables the shared memory only when doing the actual data
transfers to avoid a bug in early version of the card that corrupted
data transferred by a AHA1542.
This driver does not support the programmed-I/O data transfer mode of
the EtherEZ. That support (if available) is smc-ez.c. Nor does it
use the non-8390-compatible "Altego" mode. (No support currently planned.)
Changelog:
Paul Gortmaker : multiple card support for module users.
David Weis : Micro Channel-ized it.
Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A
Christopher Turcksin : Changed MCA-probe so that multiple adapters are
found correctly (Jul 16, 1997)
Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997)
Tom Sightler : Fixed minor detection bug caused by above merge
Tom Sightler : Added support for three more Western Digital
MCA-adapters
Tom Sightler : Added support for 2.2.x mca_find_unused_adapter
Hartmut Schmidt : - Modified parameter detection to handle each
card differently depending on a switch-list
- 'card_ver' removed from the adapter list
- Some minor bug fixes
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/system.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include "8390.h"
#include "smc-mca.h"
#include <linux/mca.h>
int ultramca_probe(struct net_device *dev);
static int ultramca_open(struct net_device *dev);
static void ultramca_reset_8390(struct net_device *dev);
static void ultramca_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr,
int ring_page);
static void ultramca_block_input(struct net_device *dev, int count,
struct sk_buff *skb,
int ring_offset);
static void ultramca_block_output(struct net_device *dev, int count,
const unsigned char *buf,
const int start_page);
static int ultramca_close_card(struct net_device *dev);
#define START_PG 0x00 /* First page of TX buffer */
#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
#define ULTRA_IO_EXTENT 32
#define EN0_ERWCNT 0x08 /* Early receive warning count. */
#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0
#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1
#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2
#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3
#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4
#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5
#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6
#define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7
struct smc_mca_adapters_t {
unsigned int id;
char *name;
};
static struct smc_mca_adapters_t smc_mca_adapters[] __initdata = {
{ 0x61c8, "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)" },
{ 0x61c9, "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)" },
{ 0x6fc0, "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)" },
{ 0x6fc1, "WD Starcard PLUS/A (WD8003ST/A)" },
{ 0x6fc2, "WD Ethercard PLUS 10T/A (WD8003W/A)" },
{ 0xefd4, "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)" },
{ 0xefd5, "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)" },
{ 0xefe5, "IBM PS/2 Adapter/A for Ethernet" },
{ 0x0000, NULL }
};
int __init ultramca_probe(struct net_device *dev)
{
unsigned short ioaddr;
unsigned char reg4, num_pages;
char slot = -1;
unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
int i, j;
int adapter_found = 0;
int adapter = 0;
int tbase = 0;
int tirq = 0;
int base_addr = dev->base_addr;
int irq = dev->irq;
if (!MCA_bus) {
return -ENODEV;
}
SET_MODULE_OWNER(dev);
if (base_addr || irq) {
printk(KERN_INFO "Probing for SMC MCA adapter");
if (base_addr) {
printk(KERN_INFO " at I/O address 0x%04x%c",
base_addr, irq ? ' ' : '\n');
}
if (irq) {
printk(KERN_INFO "using irq %d\n", irq);
}
}
/* proper multicard detection by ZP Gu (zpg@castle.net) */
for (j = 0; (smc_mca_adapters[j].name != NULL) && !adapter_found; j++) {
slot = mca_find_unused_adapter(smc_mca_adapters[j].id, 0);
while((slot != MCA_NOTFOUND) && !adapter_found) {
tirq = 0;
tbase = 0;
/* If we're trying to match a specificied irq or
* io address, we'll reject the adapter
* found unless it's the one we're looking for
*/
pos2 = mca_read_stored_pos(slot, 2); /* io_addr */
pos3 = mca_read_stored_pos(slot, 3); /* shared mem */
pos4 = mca_read_stored_pos(slot, 4); /* ROM bios addr
* range */
pos5 = mca_read_stored_pos(slot, 5); /* irq, media
* and RIPL */
/* Test the following conditions:
* - If an irq parameter is supplied, compare it
* with the irq of the adapter we found
* - If a base_addr paramater is given, compare it
* with the base_addr of the adapter we found
* - Check that the irq and the base_addr of the
* adapter we found is not already in use by
* this driver
*/
switch (j) { /* j = card-idx (card array above) [hs] */
case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
{
tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
tirq = irq_table[(pos5 & 0xc) >> 2].new_irq;
break;
}
case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
{
tbase = ((pos2 & 0x0fe) * 0x10);
tirq = irq_table[(pos5 & 3)].old_irq;
break;
}
}
if(!tirq || !tbase || (irq && irq != tirq) || (base_addr && tbase != base_addr)) {
slot = mca_find_unused_adapter(smc_mca_adapters[j].id, slot + 1);
} else {
adapter_found = 1;
adapter = j;
}
}
}
if(!adapter_found) {
return ((base_addr || irq) ? -ENXIO : -ENODEV);
}
/* Adapter found. */
printk(KERN_INFO "%s: %s found in slot %d\n",
dev->name, smc_mca_adapters[adapter].name, slot + 1);
mca_set_adapter_name(slot, smc_mca_adapters[adapter].name);
mca_mark_as_used(slot);
dev->base_addr = ioaddr = tbase;
dev->irq = tirq;
dev->mem_start = 0;
num_pages = 40;
switch (adapter) { /* card-# in const array above [hs] */
case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
{
for (i = 0; i < 16; i++) { /* taking 16 counts
* up to 15 [hs] */
if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
dev->mem_start = mem_table[i].mem_start;
num_pages = mem_table[i].num_pages;
}
}
break;
}
case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
{
dev->mem_start = ((pos3 & 0xfc) * 0x1000);
num_pages = 0x40;
break;
}
case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
{
/* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
* the index of the 0x2000 step.
* beware different number of pages [hs]
*/
dev->mem_start = 0xc0000 + (0x2000 * (pos3 & 0xf));
num_pages = 0x20 + (2 * (pos3 & 0x10));
break;
}
}
if (dev->mem_start == 0) /* sanity check, shouldn't happen */
return -ENODEV;
if (!request_region(ioaddr, ULTRA_IO_EXTENT, dev->name))
return -EBUSY;
reg4 = inb(ioaddr + 4) & 0x7f;
outb(reg4, ioaddr + 4);
printk(KERN_INFO "%s: Parameters: %#3x,", dev->name, ioaddr);
for (i = 0; i < 6; i++)
printk(KERN_INFO " %2.2X", dev->dev_addr[i] = inb(ioaddr + 8 + i));
/* Switch from the station address to the alternate register set
* and read the useful registers there.
*/
outb(0x80 | reg4, ioaddr + 4);
/* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
*/
outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
/* Switch back to the station address register set so that
* the MS-DOS driver can find the card after a warm boot.
*/
outb(reg4, ioaddr + 4);
/* Allocate dev->priv and fill in 8390 specific dev fields.
*/
if (ethdev_init(dev)) {
printk (KERN_INFO ", no memory for dev->priv.\n");
release_region(ioaddr, ULTRA_IO_EXTENT);
return -ENOMEM;
}
/* The 8390 isn't at the base address, so fake the offset
*/
dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
ei_status.name = "SMC Ultra MCA";
ei_status.word16 = 1;
ei_status.tx_start_page = START_PG;
ei_status.rx_start_page = START_PG + TX_PAGES;
ei_status.stop_page = num_pages;
dev->rmem_start = dev->mem_start + TX_PAGES * 256;
dev->mem_end = dev->rmem_end =
dev->mem_start + (ei_status.stop_page - START_PG) * 256;
printk(KERN_INFO ", IRQ %d memory %#lx-%#lx.\n",
dev->irq, dev->mem_start, dev->mem_end - 1);
ei_status.reset_8390 = &ultramca_reset_8390;
ei_status.block_input = &ultramca_block_input;
ei_status.block_output = &ultramca_block_output;
ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
ei_status.priv = slot;
dev->open = &ultramca_open;
dev->stop = &ultramca_close_card;
NS8390_init(dev, 0);
return 0;
}
static int ultramca_open(struct net_device *dev)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
int retval;
if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
return retval;
outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
outb(0x80, ioaddr + 5); /* ??? */
outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
outb(0x04, ioaddr + 5); /* ??? */
/* Set the early receive warning level in window 0 high enough not
* to receive ERW interrupts.
*/
/* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
* outb(0xff, dev->base_addr + EN0_ERWCNT);
*/
ei_open(dev);
return 0;
}
static void ultramca_reset_8390(struct net_device *dev)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
outb(ULTRA_RESET, ioaddr);
if (ei_debug > 1)
printk("resetting Ultra, t=%ld...", jiffies);
ei_status.txing = 0;
outb(0x80, ioaddr + 5); /* ??? */
outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
if (ei_debug > 1)
printk("reset done\n");
return;
}
/* 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 ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = dev->mem_start + ((ring_page - START_PG) << 8);
#ifdef notdef
/* Officially this is what we are doing, but the readl() is faster */
isa_memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
#else
((unsigned int*)hdr)[0] = isa_readl(hdr_start);
#endif
}
/* Block input and output are easy on shared memory ethercards, the only
* complication is when the ring buffer wraps.
*/
static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_start = dev->mem_start + ring_offset - (START_PG << 8);
if (xfer_start + count > dev->rmem_end) {
/* We must wrap the input move. */
int semi_count = dev->rmem_end - xfer_start;
isa_memcpy_fromio(skb->data, xfer_start, semi_count);
count -= semi_count;
isa_memcpy_fromio(skb->data + semi_count, dev->rmem_start, count);
} else {
/* Packet is in one chunk -- we can copy + cksum. */
isa_eth_io_copy_and_sum(skb, xfer_start, count, 0);
}
}
static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
unsigned long shmem = dev->mem_start + ((start_page - START_PG) << 8);
isa_memcpy_toio(shmem, buf, count);
}
static int ultramca_close_card(struct net_device *dev)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
netif_stop_queue(dev);
if (ei_debug > 1)
printk("%s: Shutting down ethercard.\n", dev->name);
outb(0x00, ioaddr + 6); /* Disable interrupts. */
free_irq(dev->irq, dev);
NS8390_init(dev, 0);
/* We should someday disable shared memory and change to 8-bit mode
* "just in case"...
*/
return 0;
}
#ifdef MODULE
#undef MODULE /* don't want to bother now! */
#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
static struct net_device dev_ultra[MAX_ULTRAMCA_CARDS];
static int io[MAX_ULTRAMCA_CARDS];
static int irq[MAX_ULTRAMCA_CARDS];
MODULE_LICENSE("GPL");
MODULE_PARM(io, "1-" __MODULE_STRING(MAX_ULTRAMCA_CARDS) "i");
MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_ULTRAMCA_CARDS) "i");
MODULE_PARM_DESC(io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
MODULE_PARM_DESC(irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
int init_module(void)
{
int this_dev, found = 0;
for (this_dev = 0; this_dev < MAX_ULTRAMCA_CARDS; this_dev++) {
struct net_device *dev = &dev_ultra[this_dev];
dev->irq = irq[this_dev];
dev->base_addr = io[this_dev];
dev->init = ultramca_probe;
if (register_netdev(dev) != 0) {
if (found != 0) { /* Got at least one. */
return 0;
}
printk(KERN_NOTICE "smc-mca.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
return -ENXIO;
}
found++;
}
return 0;
}
void cleanup_module(void)
{
int this_dev;
for (this_dev = 0; this_dev < MAX_ULTRAMCA_CARDS; this_dev++) {
struct net_device *dev = &dev_ultra[this_dev];
if (dev->priv != NULL) {
void *priv = dev->priv;
/* NB: ultra_close_card() does free_irq */
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
mca_mark_as_unused(ei_status.priv);
release_region(ioaddr, ULTRA_IO_EXTENT);
unregister_netdev(dev);
kfree(priv);
}
}
}
#endif /* MODULE */
/*
* Local variables:
* compile-command: "gcc -D__KERNEL__ -Wall -O6 -I/usr/src/linux/net/inet -c smc-mca.c"
* version-control: t
* kept-new-versions: 5
* c-indent-level: 8
* tab-width: 8
* End:
*/
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