mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-20 14:16:02 +00:00
![Joe Perches](/assets/img/avatar_default.png)
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
429 lines
9.5 KiB
C
429 lines
9.5 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
|
|
* 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 <linux/platform_device.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";
|
|
static u64 dma_mask = ISA_MAX_ADDRESS;
|
|
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 device *pdev)
|
|
{
|
|
struct net_local *tp;
|
|
static int versionprinted;
|
|
const unsigned *port;
|
|
int j, err = 0;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
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 out5;
|
|
|
|
/* At this point we have found a valid card. */
|
|
|
|
if (versionprinted++ == 0)
|
|
printk(KERN_DEBUG "%s", version);
|
|
|
|
err = -EIO;
|
|
pdev->dma_mask = &dma_mask;
|
|
if (tmsdev_init(dev, pdev))
|
|
goto out4;
|
|
|
|
dev->base_addr &= ~3;
|
|
|
|
sk_isa_read_eeprom(dev);
|
|
|
|
printk(KERN_DEBUG "skisa.c: Ring Station Address: %s\n",
|
|
print_mac(mac, dev->dev_addr));
|
|
|
|
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 "skisa.c: AutoSelect no IRQ available\n");
|
|
goto out3;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(j = 0; irqlist[j] != 0; j++)
|
|
if (irqlist[j] == dev->irq)
|
|
break;
|
|
if (irqlist[j] == 0)
|
|
{
|
|
printk(KERN_INFO "skisa.c: Illegal IRQ %d specified\n",
|
|
dev->irq);
|
|
goto out3;
|
|
}
|
|
if (request_irq(dev->irq, tms380tr_interrupt, 0,
|
|
isa_cardname, dev))
|
|
{
|
|
printk(KERN_INFO "skisa.c: Selected IRQ %d not available\n",
|
|
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 "skisa.c: AutoSelect no DMA available\n");
|
|
goto out2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(j = 0; dmalist[j] != 0; j++)
|
|
if (dmalist[j] == dev->dma)
|
|
break;
|
|
if (dmalist[j] == 0)
|
|
{
|
|
printk(KERN_INFO "skisa.c: Illegal DMA %d specified\n",
|
|
dev->dma);
|
|
goto out2;
|
|
}
|
|
if (request_dma(dev->dma, isa_cardname))
|
|
{
|
|
printk(KERN_INFO "skisa.c: Selected DMA %d not available\n",
|
|
dev->dma);
|
|
goto out2;
|
|
}
|
|
}
|
|
|
|
err = register_netdev(dev);
|
|
if (err)
|
|
goto out;
|
|
|
|
printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n",
|
|
dev->name, dev->base_addr, dev->irq, dev->dma);
|
|
|
|
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);
|
|
out5:
|
|
return 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);
|
|
}
|
|
|
|
#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 platform_device *sk_isa_dev[ISATR_MAX_ADAPTERS];
|
|
|
|
static struct platform_driver sk_isa_driver = {
|
|
.driver = {
|
|
.name = "skisa",
|
|
},
|
|
};
|
|
|
|
static int __init sk_isa_init(void)
|
|
{
|
|
struct net_device *dev;
|
|
struct platform_device *pdev;
|
|
int i, num = 0, err = 0;
|
|
|
|
err = platform_driver_register(&sk_isa_driver);
|
|
if (err)
|
|
return err;
|
|
|
|
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];
|
|
pdev = platform_device_register_simple("skisa",
|
|
i, NULL, 0);
|
|
if (IS_ERR(pdev)) {
|
|
free_netdev(dev);
|
|
continue;
|
|
}
|
|
err = setup_card(dev, &pdev->dev);
|
|
if (!err) {
|
|
sk_isa_dev[i] = pdev;
|
|
platform_set_drvdata(sk_isa_dev[i], dev);
|
|
++num;
|
|
} else {
|
|
platform_device_unregister(pdev);
|
|
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");
|
|
platform_driver_unregister(&sk_isa_driver);
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __exit sk_isa_cleanup(void)
|
|
{
|
|
struct net_device *dev;
|
|
int i;
|
|
|
|
for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
|
|
struct platform_device *pdev = sk_isa_dev[i];
|
|
|
|
if (!pdev)
|
|
continue;
|
|
dev = platform_get_drvdata(pdev);
|
|
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);
|
|
platform_set_drvdata(pdev, NULL);
|
|
platform_device_unregister(pdev);
|
|
}
|
|
platform_driver_unregister(&sk_isa_driver);
|
|
}
|
|
|
|
module_init(sk_isa_init);
|
|
module_exit(sk_isa_cleanup);
|