tmsisa.c
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上传日期:2013-04-10
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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 Friedrichn";
- #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 ";
- 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 availablen", 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 specifiedn",
- 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 availablen",
- 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 availablen", 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 specifiedn",
- 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 availablen",
- 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: %dn",
- 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:
- */