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linux/drivers/net/smc-mca.c

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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/mca.h>
#include <linux/module.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"
#define DRV_NAME "smc-mca"
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;
};
#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
static int ultra_io[MAX_ULTRAMCA_CARDS];
static int ultra_irq[MAX_ULTRAMCA_CARDS];
MODULE_LICENSE("GPL");
module_param_array(ultra_io, int, NULL, 0);
module_param_array(ultra_irq, int, NULL, 0);
MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
static const struct {
unsigned int base_addr;
} addr_table[] = {
{ 0x0800 },
{ 0x1800 },
{ 0x2800 },
{ 0x3800 },
{ 0x4800 },
{ 0x5800 },
{ 0x6800 },
{ 0x7800 },
{ 0x8800 },
{ 0x9800 },
{ 0xa800 },
{ 0xb800 },
{ 0xc800 },
{ 0xd800 },
{ 0xe800 },
{ 0xf800 }
};
#define MEM_MASK 64
static const struct {
unsigned char mem_index;
unsigned long mem_start;
unsigned char num_pages;
} mem_table[] = {
{ 16, 0x0c0000, 40 },
{ 18, 0x0c4000, 40 },
{ 20, 0x0c8000, 40 },
{ 22, 0x0cc000, 40 },
{ 24, 0x0d0000, 40 },
{ 26, 0x0d4000, 40 },
{ 28, 0x0d8000, 40 },
{ 30, 0x0dc000, 40 },
{144, 0xfc0000, 40 },
{148, 0xfc8000, 40 },
{154, 0xfd0000, 40 },
{156, 0xfd8000, 40 },
{ 0, 0x0c0000, 20 },
{ 1, 0x0c2000, 20 },
{ 2, 0x0c4000, 20 },
{ 3, 0x0c6000, 20 }
};
#define IRQ_MASK 243
static const struct {
unsigned char new_irq;
unsigned char old_irq;
} irq_table[] = {
{ 3, 3 },
{ 4, 4 },
{ 10, 10 },
{ 14, 15 }
};
static short smc_mca_adapter_ids[] __initdata = {
0x61c8,
0x61c9,
0x6fc0,
0x6fc1,
0x6fc2,
0xefd4,
0xefd5,
0xefe5,
0x0000
};
static char *smc_mca_adapter_names[] __initdata = {
"SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
"SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
"WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
"WD Starcard PLUS/A (WD8003ST/A)",
"WD Ethercard PLUS 10T/A (WD8003W/A)",
"IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
"IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
"IBM PS/2 Adapter/A for Ethernet",
NULL
};
static int ultra_found = 0;
static const struct net_device_ops ultramca_netdev_ops = {
.ndo_open = ultramca_open,
.ndo_stop = ultramca_close_card,
.ndo_start_xmit = ei_start_xmit,
.ndo_tx_timeout = ei_tx_timeout,
.ndo_get_stats = ei_get_stats,
.ndo_set_multicast_list = ei_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 = ei_poll,
#endif
};
static int __init ultramca_probe(struct device *gen_dev)
{
unsigned short ioaddr;
struct net_device *dev;
unsigned char reg4, num_pages;
struct mca_device *mca_dev = to_mca_device(gen_dev);
char slot = mca_dev->slot;
unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
int i, rc;
int adapter = mca_dev->index;
int tbase = 0;
int tirq = 0;
int base_addr = ultra_io[ultra_found];
int irq = ultra_irq[ultra_found];
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);
}
}
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_device_read_stored_pos(mca_dev, 2); /* io_addr */
pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
pos5 = mca_device_read_stored_pos(mca_dev, 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 (mca_dev->index) {
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))
/* FIXME: we're trying to force the ordering of the
* devices here, there should be a way of getting this
* to happen */
return -ENXIO;
/* Adapter found. */
dev = alloc_ei_netdev();
if(!dev)
return -ENODEV;
SET_NETDEV_DEV(dev, gen_dev);
mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
mca_device_set_claim(mca_dev, 1);
printk(KERN_INFO "smc_mca: %s found in slot %d\n",
smc_mca_adapter_names[adapter], slot + 1);
ultra_found++;
dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
dev->irq = mca_device_transform_irq(mca_dev, 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 = (unsigned long)
mca_device_transform_memory(mca_dev, (void *)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 = (unsigned long)
mca_device_transform_memory(mca_dev, (void *)((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 = (unsigned long)
mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
num_pages = 0x20 + (2 * (pos3 & 0x10));
break;
}
}
/* sanity check, shouldn't happen */
if (dev->mem_start == 0) {
rc = -ENODEV;
goto err_unclaim;
}
if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
rc = -ENODEV;
goto err_unclaim;
}
reg4 = inb(ioaddr + 4) & 0x7f;
outb(reg4, ioaddr + 4);
for (i = 0; i < 6; i++)
dev->dev_addr[i] = inb(ioaddr + 8 + i);
printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM",
slot + 1, ioaddr, dev->dev_addr);
/* 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);
dev_set_drvdata(gen_dev, dev);
/* 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;
ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256);
if (!ei_status.mem) {
rc = -ENOMEM;
goto err_release_region;
}
dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
printk(", 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->netdev_ops = &ultramca_netdev_ops;
NS8390_init(dev, 0);
rc = register_netdev(dev);
if (rc)
goto err_unmap;
return 0;
err_unmap:
iounmap(ei_status.mem);
err_release_region:
release_region(ioaddr, ULTRA_IO_EXTENT);
err_unclaim:
mca_device_set_claim(mca_dev, 0);
free_netdev(dev);
return rc;
}
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");
}
/* 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)
{
void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8);
#ifdef notdef
/* Officially this is what we are doing, but the readl() is faster */
memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
#else
((unsigned int*)hdr)[0] = 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)
{
void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256;
if (ring_offset + count > ei_status.stop_page * 256) {
/* We must wrap the input move. */
int semi_count = ei_status.stop_page * 256 - ring_offset;
memcpy_fromio(skb->data, xfer_start, semi_count);
count -= semi_count;
memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
} else {
memcpy_fromio(skb->data, xfer_start, count);
}
}
static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8);
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;
}
static int ultramca_remove(struct device *gen_dev)
{
struct mca_device *mca_dev = to_mca_device(gen_dev);
struct net_device *dev = dev_get_drvdata(gen_dev);
if (dev) {
/* NB: ultra_close_card() does free_irq */
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
unregister_netdev(dev);
mca_device_set_claim(mca_dev, 0);
release_region(ioaddr, ULTRA_IO_EXTENT);
iounmap(ei_status.mem);
free_netdev(dev);
}
return 0;
}
static struct mca_driver ultra_driver = {
.id_table = smc_mca_adapter_ids,
.driver = {
.name = "smc-mca",
.bus = &mca_bus_type,
.probe = ultramca_probe,
.remove = ultramca_remove,
}
};
static int __init ultramca_init_module(void)
{
if(!MCA_bus)
return -ENXIO;
mca_register_driver(&ultra_driver);
return ultra_found ? 0 : -ENXIO;
}
static void __exit ultramca_cleanup_module(void)
{
mca_unregister_driver(&ultra_driver);
}
module_init(ultramca_init_module);
module_exit(ultramca_cleanup_module);
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