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/*
* tmsisa.c: A generic network driver for TMS380-based ISA token ring cards.
*
* Based on tmspci written 1999 by Adam Fritzler
*
* Written 2000 by Jochen Friedrich
* Dedicated to my girlfriend Steffi Bopp
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* This driver module supports the following cards:
* - SysKonnect TR4/16(+) ISA (SK-4190)
*
* Maintainer(s):
* AF Adam Fritzler mid@auk.cx
* JF Jochen Friedrich jochen@scram.de
*
* TODO:
* 1. Add support for Proteon TR ISA adapters (1392, 1392+)
*/
static const char version[] = "tmsisa.c: v1.00 14/01/2001 by Jochen Friedrich\n";
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pci.h>
#include <asm/dma.h>
#include <linux/netdevice.h>
#include <linux/trdevice.h>
#include "tms380tr.h"
#define TMS_ISA_IO_EXTENT 32
/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int portlist[] __initdata = {
0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,// SK
0
};
/* A zero-terminated list of IRQs to be probed.
* Used again after initial probe for sktr_chipset_init, called from sktr_open.
*/
static unsigned short irqlist[] = {
3, 5, 9, 10, 11, 12, 15,
0
};
/* A zero-terminated list of DMAs to be probed. */
static int dmalist[] __initdata = {
5, 6, 7,
0
};
static char isa_cardname[] = "SK NET TR 4/16 ISA\0";
int tms_isa_probe(struct net_device *dev);
static int tms_isa_open(struct net_device *dev);
static int tms_isa_close(struct net_device *dev);
static void tms_isa_read_eeprom(struct net_device *dev);
static unsigned short tms_isa_setnselout_pins(struct net_device *dev);
static unsigned short tms_isa_sifreadb(struct net_device *dev, unsigned short reg)
{
return inb(dev->base_addr + reg);
}
static unsigned short tms_isa_sifreadw(struct net_device *dev, unsigned short reg)
{
return inw(dev->base_addr + reg);
}
static void tms_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
{
outb(val, dev->base_addr + reg);
}
static void tms_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
{
outw(val, dev->base_addr + reg);
}
struct tms_isa_card {
struct net_device *dev;
struct tms_isa_card *next;
};
static struct tms_isa_card *tms_isa_card_list;
static int __init tms_isa_probe1(int ioaddr)
{
unsigned char old, chk1, chk2;
old = inb(ioaddr + SIFADR); /* Get the old SIFADR value */
chk1 = 0; /* Begin with check value 0 */
do {
/* Write new SIFADR value */
outb(chk1, ioaddr + SIFADR);
/* Read, invert and write */
chk2 = inb(ioaddr + SIFADD);
chk2 ^= 0x0FE;
outb(chk2, ioaddr + SIFADR);
/* Read, invert and compare */
chk2 = inb(ioaddr + SIFADD);
chk2 ^= 0x0FE;
if(chk1 != chk2)
return (-1); /* No adapter */
chk1 -= 2;
} while(chk1 != 0); /* Repeat 128 times (all byte values) */
/* Restore the SIFADR value */
outb(old, ioaddr + SIFADR);
return (0);
}
int __init tms_isa_probe(struct net_device *dev)
{
static int versionprinted;
struct net_local *tp;
int j;
struct tms_isa_card *card;
if(check_region(dev->base_addr, TMS_ISA_IO_EXTENT))
return -1;
if(tms_isa_probe1(dev->base_addr))
return -1;
if (versionprinted++ == 0)
printk("%s", version);
/* At this point we have found a valid card. */
if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname))
return -1;
if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
{
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
return -1;
}
dev->base_addr &= ~3;
tms_isa_read_eeprom(dev);
printk("%s: Ring Station Address: ", dev->name);
printk("%2.2x", dev->dev_addr[0]);
for (j = 1; j < 6; j++)
printk(":%2.2x", dev->dev_addr[j]);
printk("\n");
tp = (struct net_local *)dev->priv;
tp->setnselout = tms_isa_setnselout_pins;
tp->sifreadb = tms_isa_sifreadb;
tp->sifreadw = tms_isa_sifreadw;
tp->sifwriteb = tms_isa_sifwriteb;
tp->sifwritew = tms_isa_sifwritew;
memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1);
tp->tmspriv = NULL;
dev->open = tms_isa_open;
dev->stop = tms_isa_close;
if (dev->irq == 0)
{
for(j = 0; irqlist[j] != 0; j++)
{
dev->irq = irqlist[j];
if (!request_irq(dev->irq, tms380tr_interrupt, 0,
isa_cardname, dev))
break;
}
if(irqlist[j] == 0)
{
printk("%s: AutoSelect no IRQ available\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
return -1;
}
}
else
{
for(j = 0; irqlist[j] != 0; j++)
if (irqlist[j] == dev->irq)
break;
if (irqlist[j] == 0)
{
printk("%s: Illegal IRQ %d specified\n",
dev->name, dev->irq);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
return -1;
}
if (request_irq(dev->irq, tms380tr_interrupt, 0,
isa_cardname, dev))
{
printk("%s: Selected IRQ %d not available\n",
dev->name, dev->irq);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
return -1;
}
}
if (dev->dma == 0)
{
for(j = 0; dmalist[j] != 0; j++)
{
dev->dma = dmalist[j];
if (!request_dma(dev->dma, isa_cardname))
break;
}
if(dmalist[j] == 0)
{
printk("%s: AutoSelect no DMA available\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
tmsdev_term(dev);
return -1;
}
}
else
{
for(j = 0; dmalist[j] != 0; j++)
if (dmalist[j] == dev->dma)
break;
if (dmalist[j] == 0)
{
printk("%s: Illegal DMA %d specified\n",
dev->name, dev->dma);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
tmsdev_term(dev);
return -1;
}
if (request_dma(dev->dma, isa_cardname))
{
printk("%s: Selected DMA %d not available\n",
dev->name, dev->dma);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
tmsdev_term(dev);
return -1;
}
}
printk("%s: IO: %#4lx IRQ: %d DMA: %d\n",
dev->name, dev->base_addr, dev->irq, dev->dma);
if (register_trdev(dev) == 0)
{
/* Enlist in the card list */
card = kmalloc(sizeof(struct tms_isa_card), GFP_KERNEL);
if (!card) {
unregister_trdev(dev);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
free_dma(dev->dma);
tmsdev_term(dev);
return -1;
}
card->next = tms_isa_card_list;
tms_isa_card_list = card;
card->dev = dev;
}
else
{
printk("%s: register_trdev() returned non-zero.\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
free_dma(dev->dma);
tmsdev_term(dev);
return -1;
}
return 0;
}
/*
* Reads MAC address from adapter RAM, which should've read it from
* the onboard ROM.
*
* Calling this on a board that does not support it can be a very
* dangerous thing. The Madge board, for instance, will lock your
* machine hard when this is called. Luckily, its supported in a
* seperate driver. --ASF
*/
static void tms_isa_read_eeprom(struct net_device *dev)
{
int i;
/* Address: 0000:0000 */
tms_isa_sifwritew(dev, 0, SIFADX);
tms_isa_sifwritew(dev, 0, SIFADR);
/* Read six byte MAC address data */
dev->addr_len = 6;
for(i = 0; i < 6; i++)
dev->dev_addr[i] = tms_isa_sifreadw(dev, SIFINC) >> 8;
}
unsigned short tms_isa_setnselout_pins(struct net_device *dev)
{
return 0;
}
static int tms_isa_open(struct net_device *dev)
{
struct net_local *tp = (struct net_local *)dev->priv;
unsigned short val = 0;
unsigned short oldval;
int i;
val = 0;
for(i = 0; irqlist[i] != 0; i++)
{
if(irqlist[i] == dev->irq)
break;
}
val |= CYCLE_TIME << 2;
val |= i << 4;
i = dev->dma - 5;
val |= i;
if(tp->DataRate == SPEED_4)
val |= LINE_SPEED_BIT;
else
val &= ~LINE_SPEED_BIT;
oldval = tms_isa_sifreadb(dev, POSREG);
/* Leave cycle bits alone */
oldval |= 0xf3;
val &= oldval;
tms_isa_sifwriteb(dev, val, POSREG);
tms380tr_open(dev);
MOD_INC_USE_COUNT;
return 0;
}
static int tms_isa_close(struct net_device *dev)
{
tms380tr_close(dev);
MOD_DEC_USE_COUNT;
return 0;
}
#ifdef MODULE
#define ISATR_MAX_ADAPTERS 3
static int io[ISATR_MAX_ADAPTERS];
static int irq[ISATR_MAX_ADAPTERS];
static int dma[ISATR_MAX_ADAPTERS];
MODULE_LICENSE("GPL");
MODULE_PARM(io, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
MODULE_PARM(irq, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
MODULE_PARM(dma, "1-" __MODULE_STRING(ISATR_MAX_ADAPTERS) "i");
int init_module(void)
{
int i, num;
struct net_device *dev;
num = 0;
if (io[0])
{ /* Only probe addresses from command line */
for (i = 0; i < ISATR_MAX_ADAPTERS; i++)
{
if (io[i] == 0)
continue;
dev = init_trdev(NULL, 0);
if (!dev)
return (-ENOMEM);
dev->base_addr = io[i];
dev->irq = irq[i];
dev->dma = dma[i];
if (tms_isa_probe(dev))
{
unregister_netdev(dev);
kfree(dev);
}
else
num++;
}
}
else
{
for(i = 0; portlist[i]; i++)
{
if (num >= ISATR_MAX_ADAPTERS)
continue;
dev = init_trdev(NULL, 0);
if (!dev)
return (-ENOMEM);
dev->base_addr = portlist[i];
dev->irq = irq[num];
dev->dma = dma[num];
if (tms_isa_probe(dev))
{
unregister_netdev(dev);
kfree(dev);
}
else
num++;
}
}
printk(KERN_NOTICE "tmsisa.c: %d cards found.\n", num);
/* Probe for cards. */
if (num == 0) {
printk(KERN_NOTICE "tmsisa.c: No cards found.\n");
}
return (0);
}
void cleanup_module(void)
{
struct net_device *dev;
struct tms_isa_card *this_card;
while (tms_isa_card_list) {
dev = tms_isa_card_list->dev;
unregister_netdev(dev);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
free_dma(dev->dma);
tmsdev_term(dev);
kfree(dev);
this_card = tms_isa_card_list;
tms_isa_card_list = this_card->next;
kfree(this_card);
}
}
#endif /* MODULE */
/*
* Local variables:
* compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tmsisa.c"
* alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c tmsisa.c"
* c-set-style "K&R"
* c-indent-level: 8
* c-basic-offset: 8
* tab-width: 8
* End:
*/
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