1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
442 lines
9.6 KiB
C
442 lines
9.6 KiB
C
/*
|
||
* skisa.c: A network driver for SK-NET 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
|
||
*
|
||
* Modification History:
|
||
* 14-Jan-01 JF Created
|
||
* 28-Oct-02 JF Fixed probe of card for static compilation.
|
||
* Fixed module init to not make hotplug go wild.
|
||
* 09-Nov-02 JF Fixed early bail out on out of memory
|
||
* situations if multiple cards are found.
|
||
* Cleaned up some unnecessary console SPAM.
|
||
* 09-Dec-02 JF Fixed module reference counting.
|
||
* 02-Jan-03 JF Renamed to skisa.c
|
||
*
|
||
*/
|
||
static const char version[] = "skisa.c: v1.03 09/12/2002 by Jochen Friedrich\n";
|
||
|
||
#include <linux/module.h>
|
||
#include <linux/kernel.h>
|
||
#include <linux/errno.h>
|
||
#include <linux/pci.h>
|
||
#include <linux/init.h>
|
||
#include <linux/netdevice.h>
|
||
#include <linux/trdevice.h>
|
||
|
||
#include <asm/system.h>
|
||
#include <asm/io.h>
|
||
#include <asm/irq.h>
|
||
#include <asm/pci.h>
|
||
#include <asm/dma.h>
|
||
|
||
#include "tms380tr.h"
|
||
|
||
#define SK_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 const 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";
|
||
|
||
struct net_device *sk_isa_probe(int unit);
|
||
static int sk_isa_open(struct net_device *dev);
|
||
static void sk_isa_read_eeprom(struct net_device *dev);
|
||
static unsigned short sk_isa_setnselout_pins(struct net_device *dev);
|
||
|
||
static unsigned short sk_isa_sifreadb(struct net_device *dev, unsigned short reg)
|
||
{
|
||
return inb(dev->base_addr + reg);
|
||
}
|
||
|
||
static unsigned short sk_isa_sifreadw(struct net_device *dev, unsigned short reg)
|
||
{
|
||
return inw(dev->base_addr + reg);
|
||
}
|
||
|
||
static void sk_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
|
||
{
|
||
outb(val, dev->base_addr + reg);
|
||
}
|
||
|
||
static void sk_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
|
||
{
|
||
outw(val, dev->base_addr + reg);
|
||
}
|
||
|
||
|
||
static int __init sk_isa_probe1(struct net_device *dev, int ioaddr)
|
||
{
|
||
unsigned char old, chk1, chk2;
|
||
|
||
if (!request_region(ioaddr, SK_ISA_IO_EXTENT, isa_cardname))
|
||
return -ENODEV;
|
||
|
||
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) {
|
||
release_region(ioaddr, SK_ISA_IO_EXTENT);
|
||
return -ENODEV;
|
||
}
|
||
|
||
chk1 -= 2;
|
||
} while(chk1 != 0); /* Repeat 128 times (all byte values) */
|
||
|
||
/* Restore the SIFADR value */
|
||
outb(old, ioaddr + SIFADR);
|
||
|
||
dev->base_addr = ioaddr;
|
||
return 0;
|
||
}
|
||
|
||
static int __init setup_card(struct net_device *dev)
|
||
{
|
||
struct net_local *tp;
|
||
static int versionprinted;
|
||
const unsigned *port;
|
||
int j, err = 0;
|
||
|
||
if (!dev)
|
||
return -ENOMEM;
|
||
|
||
SET_MODULE_OWNER(dev);
|
||
if (dev->base_addr) /* probe specific location */
|
||
err = sk_isa_probe1(dev, dev->base_addr);
|
||
else {
|
||
for (port = portlist; *port; port++) {
|
||
err = sk_isa_probe1(dev, *port);
|
||
if (!err)
|
||
break;
|
||
}
|
||
}
|
||
if (err)
|
||
goto out4;
|
||
|
||
/* At this point we have found a valid card. */
|
||
|
||
if (versionprinted++ == 0)
|
||
printk(KERN_DEBUG "%s", version);
|
||
|
||
err = -EIO;
|
||
if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
|
||
goto out4;
|
||
|
||
dev->base_addr &= ~3;
|
||
|
||
sk_isa_read_eeprom(dev);
|
||
|
||
printk(KERN_DEBUG "%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 = netdev_priv(dev);
|
||
tp->setnselout = sk_isa_setnselout_pins;
|
||
|
||
tp->sifreadb = sk_isa_sifreadb;
|
||
tp->sifreadw = sk_isa_sifreadw;
|
||
tp->sifwriteb = sk_isa_sifwriteb;
|
||
tp->sifwritew = sk_isa_sifwritew;
|
||
|
||
memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1);
|
||
|
||
tp->tmspriv = NULL;
|
||
|
||
dev->open = sk_isa_open;
|
||
dev->stop = tms380tr_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(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
|
||
goto out3;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for(j = 0; irqlist[j] != 0; j++)
|
||
if (irqlist[j] == dev->irq)
|
||
break;
|
||
if (irqlist[j] == 0)
|
||
{
|
||
printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
|
||
dev->name, dev->irq);
|
||
goto out3;
|
||
}
|
||
if (request_irq(dev->irq, tms380tr_interrupt, 0,
|
||
isa_cardname, dev))
|
||
{
|
||
printk(KERN_INFO "%s: Selected IRQ %d not available\n",
|
||
dev->name, dev->irq);
|
||
goto out3;
|
||
}
|
||
}
|
||
|
||
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(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
|
||
goto out2;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for(j = 0; dmalist[j] != 0; j++)
|
||
if (dmalist[j] == dev->dma)
|
||
break;
|
||
if (dmalist[j] == 0)
|
||
{
|
||
printk(KERN_INFO "%s: Illegal DMA %d specified\n",
|
||
dev->name, dev->dma);
|
||
goto out2;
|
||
}
|
||
if (request_dma(dev->dma, isa_cardname))
|
||
{
|
||
printk(KERN_INFO "%s: Selected DMA %d not available\n",
|
||
dev->name, dev->dma);
|
||
goto out2;
|
||
}
|
||
}
|
||
|
||
printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n",
|
||
dev->name, dev->base_addr, dev->irq, dev->dma);
|
||
|
||
err = register_netdev(dev);
|
||
if (err)
|
||
goto out;
|
||
|
||
return 0;
|
||
out:
|
||
free_dma(dev->dma);
|
||
out2:
|
||
free_irq(dev->irq, dev);
|
||
out3:
|
||
tmsdev_term(dev);
|
||
out4:
|
||
release_region(dev->base_addr, SK_ISA_IO_EXTENT);
|
||
return err;
|
||
}
|
||
|
||
struct net_device * __init sk_isa_probe(int unit)
|
||
{
|
||
struct net_device *dev = alloc_trdev(sizeof(struct net_local));
|
||
int err = 0;
|
||
|
||
if (!dev)
|
||
return ERR_PTR(-ENOMEM);
|
||
|
||
if (unit >= 0) {
|
||
sprintf(dev->name, "tr%d", unit);
|
||
netdev_boot_setup_check(dev);
|
||
}
|
||
|
||
err = setup_card(dev);
|
||
if (err)
|
||
goto out;
|
||
|
||
return dev;
|
||
out:
|
||
free_netdev(dev);
|
||
return ERR_PTR(err);
|
||
}
|
||
|
||
/*
|
||
* 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
|
||
* separate driver. --ASF
|
||
*/
|
||
static void sk_isa_read_eeprom(struct net_device *dev)
|
||
{
|
||
int i;
|
||
|
||
/* Address: 0000:0000 */
|
||
sk_isa_sifwritew(dev, 0, SIFADX);
|
||
sk_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] = sk_isa_sifreadw(dev, SIFINC) >> 8;
|
||
}
|
||
|
||
unsigned short sk_isa_setnselout_pins(struct net_device *dev)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int sk_isa_open(struct net_device *dev)
|
||
{
|
||
struct net_local *tp = netdev_priv(dev);
|
||
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 = sk_isa_sifreadb(dev, POSREG);
|
||
/* Leave cycle bits alone */
|
||
oldval |= 0xf3;
|
||
val &= oldval;
|
||
sk_isa_sifwriteb(dev, val, POSREG);
|
||
|
||
return tms380tr_open(dev);
|
||
}
|
||
|
||
#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_param_array(io, int, NULL, 0);
|
||
module_param_array(irq, int, NULL, 0);
|
||
module_param_array(dma, int, NULL, 0);
|
||
|
||
static struct net_device *sk_isa_dev[ISATR_MAX_ADAPTERS];
|
||
|
||
int init_module(void)
|
||
{
|
||
struct net_device *dev;
|
||
int i, num = 0, err = 0;
|
||
|
||
for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
|
||
dev = alloc_trdev(sizeof(struct net_local));
|
||
if (!dev)
|
||
continue;
|
||
|
||
dev->base_addr = io[i];
|
||
dev->irq = irq[i];
|
||
dev->dma = dma[i];
|
||
err = setup_card(dev);
|
||
|
||
if (!err) {
|
||
sk_isa_dev[i] = dev;
|
||
++num;
|
||
} else {
|
||
free_netdev(dev);
|
||
}
|
||
}
|
||
|
||
printk(KERN_NOTICE "skisa.c: %d cards found.\n", num);
|
||
/* Probe for cards. */
|
||
if (num == 0) {
|
||
printk(KERN_NOTICE "skisa.c: No cards found.\n");
|
||
return (-ENODEV);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
void cleanup_module(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
|
||
struct net_device *dev = sk_isa_dev[i];
|
||
|
||
if (!dev)
|
||
continue;
|
||
|
||
unregister_netdev(dev);
|
||
release_region(dev->base_addr, SK_ISA_IO_EXTENT);
|
||
free_irq(dev->irq, dev);
|
||
free_dma(dev->dma);
|
||
tmsdev_term(dev);
|
||
free_netdev(dev);
|
||
}
|
||
}
|
||
#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 skisa.c"
|
||
* alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c skisa.c"
|
||
* c-set-style "K&R"
|
||
* c-indent-level: 8
|
||
* c-basic-offset: 8
|
||
* tab-width: 8
|
||
* End:
|
||
*/
|