drivers/net/tokenring/proteon.c

   1 /*
   2  *  proteon.c: A network driver for Proteon ISA token ring cards.
   3  *
   4  *  Based on tmspci written 1999 by Adam Fritzler
   5  *
   6  *  Written 2003 by Jochen Friedrich
   7  *
   8  *  This software may be used and distributed according to the terms
   9  *  of the GNU General Public License, incorporated herein by reference.
  10  *
  11  *  This driver module supports the following cards:
  12  *      - Proteon 1392, 1392+
  13  *
  14  *  Maintainer(s):
  15  *    AF        Adam Fritzler           mid@auk.cx
  16  *    JF        Jochen Friedrich        jochen@scram.de
  17  *
  18  *  Modification History:
  19  *      02-Jan-03       JF      Created
  20  *
  21  */
  22 static const char version[] = "proteon.c: v1.00 02/01/2003 by Jochen Friedrich\n";
  23
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/delay.h>
  27 #include <linux/errno.h>
  28 #include <linux/pci.h>
  29 #include <linux/init.h>
  30 #include <linux/netdevice.h>
  31 #include <linux/trdevice.h>
  32
  33 #include <asm/system.h>
  34 #include <asm/io.h>
  35 #include <asm/irq.h>
  36 #include <asm/pci.h>
  37 #include <asm/dma.h>
  38
  39 #include "tms380tr.h"
  40
  41 #define PROTEON_IO_EXTENT 32
  42
  43 /* A zero-terminated list of I/O addresses to be probed. */
  44 static unsigned int portlist[] __initdata = {
  45         0x0A20, 0x0E20, 0x1A20, 0x1E20, 0x2A20, 0x2E20, 0x3A20, 0x3E20,// Prot.
  46         0x4A20, 0x4E20, 0x5A20, 0x5E20, 0x6A20, 0x6E20, 0x7A20, 0x7E20,// Prot.
  47         0x8A20, 0x8E20, 0x9A20, 0x9E20, 0xAA20, 0xAE20, 0xBA20, 0xBE20,// Prot.
  48         0xCA20, 0xCE20, 0xDA20, 0xDE20, 0xEA20, 0xEE20, 0xFA20, 0xFE20,// Prot.
  49         0
  50 };
  51
  52 /* A zero-terminated list of IRQs to be probed. */
  53 static unsigned short irqlist[] = {
  54         7, 6, 5, 4, 3, 12, 11, 10, 9,
  55         0
  56 };
  57
  58 /* A zero-terminated list of DMAs to be probed. */
  59 static int dmalist[] __initdata = {
  60         5, 6, 7,
  61         0
  62 };
  63
  64 static char cardname[] = "Proteon 1392\0";
  65
  66 struct net_device *proteon_probe(int unit);
  67 static int proteon_open(struct net_device *dev);
  68 static void proteon_read_eeprom(struct net_device *dev);
  69 static unsigned short proteon_setnselout_pins(struct net_device *dev);
  70
  71 static unsigned short proteon_sifreadb(struct net_device *dev, unsigned short reg)
  72 {
  73         return inb(dev->base_addr + reg);
  74 }
  75
  76 static unsigned short proteon_sifreadw(struct net_device *dev, unsigned short reg)
  77 {
  78         return inw(dev->base_addr + reg);
  79 }
  80
  81 static void proteon_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
  82 {
  83         outb(val, dev->base_addr + reg);
  84 }
  85
  86 static void proteon_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
  87 {
  88         outw(val, dev->base_addr + reg);
  89 }
  90
  91 static int __init proteon_probe1(struct net_device *dev, int ioaddr)
  92 {
  93         unsigned char chk1, chk2;
  94         int i;
  95
  96         if (!request_region(ioaddr, PROTEON_IO_EXTENT, cardname))
  97                 return -ENODEV;
  98
  99
 100         chk1 = inb(ioaddr + 0x1f);      /* Get Proteon ID reg 1 */
 101         if (chk1 != 0x1f)
 102                 goto nodev;
 103
 104         chk1 = inb(ioaddr + 0x1e) & 0x07;       /* Get Proteon ID reg 0 */
 105         for (i=0; i<16; i++) {
 106                 chk2 = inb(ioaddr + 0x1e) & 0x07;
 107                 if (((chk1 + 1) & 0x07) != chk2)
 108                         goto nodev;
 109                 chk1 = chk2;
 110         }
 111
 112         dev->base_addr = ioaddr;
 113         return (0);
 114 nodev:
 115         release_region(ioaddr, PROTEON_IO_EXTENT);
 116         return -ENODEV;
 117 }
 118
 119 static int __init setup_card(struct net_device *dev)
 120 {
 121         struct net_local *tp;
 122         static int versionprinted;
 123         const unsigned *port;
 124         int j,err = 0;
 125
 126         if (!dev)
 127                 return -ENOMEM;
 128
 129         SET_MODULE_OWNER(dev);
 130         if (dev->base_addr)     /* probe specific location */
 131                 err = proteon_probe1(dev, dev->base_addr);
 132         else {
 133                 for (port = portlist; *port; port++) {
 134                         err = proteon_probe1(dev, *port);
 135                         if (!err)
 136                                 break;
 137                 }
 138         }
 139         if (err)
 140                 goto out4;
 141
 142         /* At this point we have found a valid card. */
 143
 144         if (versionprinted++ == 0)
 145                 printk(KERN_DEBUG "%s", version);
 146
 147         err = -EIO;
 148         if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
 149                 goto out4;
 150
 151         dev->base_addr &= ~3;
 152
 153         proteon_read_eeprom(dev);
 154
 155         printk(KERN_DEBUG "%s:    Ring Station Address: ", dev->name);
 156         printk("%2.2x", dev->dev_addr[0]);
 157         for (j = 1; j < 6; j++)
 158                 printk(":%2.2x", dev->dev_addr[j]);
 159         printk("\n");
 160
 161         tp = netdev_priv(dev);
 162         tp->setnselout = proteon_setnselout_pins;
 163
 164         tp->sifreadb = proteon_sifreadb;
 165         tp->sifreadw = proteon_sifreadw;
 166         tp->sifwriteb = proteon_sifwriteb;
 167         tp->sifwritew = proteon_sifwritew;
 168
 169         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
 170
 171         tp->tmspriv = NULL;
 172
 173         dev->open = proteon_open;
 174         dev->stop = tms380tr_close;
 175
 176         if (dev->irq == 0)
 177         {
 178                 for(j = 0; irqlist[j] != 0; j++)
 179                 {
 180                         dev->irq = irqlist[j];
 181                         if (!request_irq(dev->irq, tms380tr_interrupt, 0,
 182                                 cardname, dev))
 183                                 break;
 184                 }
 185
 186                 if(irqlist[j] == 0)
 187                 {
 188                         printk(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
 189                         goto out3;
 190                 }
 191         }
 192         else
 193         {
 194                 for(j = 0; irqlist[j] != 0; j++)
 195                         if (irqlist[j] == dev->irq)
 196                                 break;
 197                 if (irqlist[j] == 0)
 198                 {
 199                         printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
 200                                 dev->name, dev->irq);
 201                         goto out3;
 202                 }
 203                 if (request_irq(dev->irq, tms380tr_interrupt, 0,
 204                         cardname, dev))
 205                 {
 206                         printk(KERN_INFO "%s: Selected IRQ %d not available\n",
 207                                 dev->name, dev->irq);
 208                         goto out3;
 209                 }
 210         }
 211
 212         if (dev->dma == 0)
 213         {
 214                 for(j = 0; dmalist[j] != 0; j++)
 215                 {
 216                         dev->dma = dmalist[j];
 217                         if (!request_dma(dev->dma, cardname))
 218                                 break;
 219                 }
 220
 221                 if(dmalist[j] == 0)
 222                 {
 223                         printk(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
 224                         goto out2;
 225                 }
 226         }
 227         else
 228         {
 229                 for(j = 0; dmalist[j] != 0; j++)
 230                         if (dmalist[j] == dev->dma)
 231                                 break;
 232                 if (dmalist[j] == 0)
 233                 {
 234                         printk(KERN_INFO "%s: Illegal DMA %d specified\n",
 235                                 dev->name, dev->dma);
 236                         goto out2;
 237                 }
 238                 if (request_dma(dev->dma, cardname))
 239                 {
 240                         printk(KERN_INFO "%s: Selected DMA %d not available\n",
 241                                 dev->name, dev->dma);
 242                         goto out2;
 243                 }
 244         }
 245
 246         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
 247                dev->name, dev->base_addr, dev->irq, dev->dma);
 248
 249         err = register_netdev(dev);
 250         if (err)
 251                 goto out;
 252
 253         return 0;
 254 out:
 255         free_dma(dev->dma);
 256 out2:
 257         free_irq(dev->irq, dev);
 258 out3:
 259         tmsdev_term(dev);
 260 out4:
 261         release_region(dev->base_addr, PROTEON_IO_EXTENT);
 262         return err;
 263 }
 264
 265 struct net_device * __init proteon_probe(int unit)
 266 {
 267         struct net_device *dev = alloc_trdev(sizeof(struct net_local));
 268         int err = 0;
 269
 270         if (!dev)
 271                 return ERR_PTR(-ENOMEM);
 272
 273         if (unit >= 0) {
 274                 sprintf(dev->name, "tr%d", unit);
 275                 netdev_boot_setup_check(dev);
 276         }
 277
 278         err = setup_card(dev);
 279         if (err)
 280                 goto out;
 281
 282         return dev;
 283
 284 out:
 285         free_netdev(dev);
 286         return ERR_PTR(err);
 287 }
 288
 289 /*
 290  * Reads MAC address from adapter RAM, which should've read it from
 291  * the onboard ROM.
 292  *
 293  * Calling this on a board that does not support it can be a very
 294  * dangerous thing.  The Madge board, for instance, will lock your
 295  * machine hard when this is called.  Luckily, its supported in a
 296  * separate driver.  --ASF
 297  */
 298 static void proteon_read_eeprom(struct net_device *dev)
 299 {
 300         int i;
 301
 302         /* Address: 0000:0000 */
 303         proteon_sifwritew(dev, 0, SIFADX);
 304         proteon_sifwritew(dev, 0, SIFADR);
 305
 306         /* Read six byte MAC address data */
 307         dev->addr_len = 6;
 308         for(i = 0; i < 6; i++)
 309                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
 310 }
 311
 312 unsigned short proteon_setnselout_pins(struct net_device *dev)
 313 {
 314         return 0;
 315 }
 316
 317 static int proteon_open(struct net_device *dev)
 318 {
 319         struct net_local *tp = netdev_priv(dev);
 320         unsigned short val = 0;
 321         int i;
 322
 323         /* Proteon reset sequence */
 324         outb(0, dev->base_addr + 0x11);
 325         mdelay(20);
 326         outb(0x04, dev->base_addr + 0x11);
 327         mdelay(20);
 328         outb(0, dev->base_addr + 0x11);
 329         mdelay(100);
 330
 331         /* set control/status reg */
 332         val = inb(dev->base_addr + 0x11);
 333         val |= 0x78;
 334         val &= 0xf9;
 335         if(tp->DataRate == SPEED_4)
 336                 val |= 0x20;
 337         else
 338                 val &= ~0x20;
 339
 340         outb(val, dev->base_addr + 0x11);
 341         outb(0xff, dev->base_addr + 0x12);
 342         for(i = 0; irqlist[i] != 0; i++)
 343         {
 344                 if(irqlist[i] == dev->irq)
 345                         break;
 346         }
 347         val = i;
 348         i = (7 - dev->dma) << 4;
 349         val |= i;
 350         outb(val, dev->base_addr + 0x13);
 351
 352         return tms380tr_open(dev);
 353 }
 354
 355 #ifdef MODULE
 356
 357 #define ISATR_MAX_ADAPTERS 3
 358
 359 static int io[ISATR_MAX_ADAPTERS];
 360 static int irq[ISATR_MAX_ADAPTERS];
 361 static int dma[ISATR_MAX_ADAPTERS];
 362
 363 MODULE_LICENSE("GPL");
 364
 365 module_param_array(io, int, NULL, 0);
 366 module_param_array(irq, int, NULL, 0);
 367 module_param_array(dma, int, NULL, 0);
 368
 369 static struct net_device *proteon_dev[ISATR_MAX_ADAPTERS];
 370
 371 int init_module(void)
 372 {
 373         struct net_device *dev;
 374         int i, num = 0, err = 0;
 375
 376         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 377                 dev = alloc_trdev(sizeof(struct net_local));
 378                 if (!dev)
 379                         continue;
 380
 381                 dev->base_addr = io[i];
 382                 dev->irq = irq[i];
 383                 dev->dma = dma[i];
 384                 err = setup_card(dev);
 385                 if (!err) {
 386                         proteon_dev[i] = dev;
 387                         ++num;
 388                 } else {
 389                         free_netdev(dev);
 390                 }
 391         }
 392
 393         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
 394         /* Probe for cards. */
 395         if (num == 0) {
 396                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
 397                 return (-ENODEV);
 398         }
 399         return (0);
 400 }
 401
 402 void cleanup_module(void)
 403 {
 404         int i;
 405
 406         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 407                 struct net_device *dev = proteon_dev[i];
 408
 409                 if (!dev)
 410                         continue;
 411
 412                 unregister_netdev(dev);
 413                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
 414                 free_irq(dev->irq, dev);
 415                 free_dma(dev->dma);
 416                 tmsdev_term(dev);
 417                 free_netdev(dev);
 418         }
 419 }
 420 #endif /* MODULE */
 421
 422 \f
 423 /*
 424  * Local variables:
 425  *  compile-command: "gcc -DMODVERSIONS  -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c proteon.c"
 426  *  alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c proteon.c"
 427  *  c-set-style "K&R"
 428  *  c-indent-level: 8
 429  *  c-basic-offset: 8
 430  *  tab-width: 8
 431  * End:
 432  */