/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #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: */