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 #include <linux/platform_device.h>
  33
  34 #include <asm/system.h>
  35 #include <asm/io.h>
  36 #include <asm/irq.h>
  37 #include <asm/pci.h>
  38 #include <asm/dma.h>
  39
  40 #include "tms380tr.h"
  41
  42 #define PROTEON_IO_EXTENT 32
  43
  44 /* A zero-terminated list of I/O addresses to be probed. */
  45 static unsigned int portlist[] __initdata = {
  46         0x0A20, 0x0E20, 0x1A20, 0x1E20, 0x2A20, 0x2E20, 0x3A20, 0x3E20,// Prot.
  47         0x4A20, 0x4E20, 0x5A20, 0x5E20, 0x6A20, 0x6E20, 0x7A20, 0x7E20,// Prot.
  48         0x8A20, 0x8E20, 0x9A20, 0x9E20, 0xAA20, 0xAE20, 0xBA20, 0xBE20,// Prot.
  49         0xCA20, 0xCE20, 0xDA20, 0xDE20, 0xEA20, 0xEE20, 0xFA20, 0xFE20,// Prot.
  50         0
  51 };
  52
  53 /* A zero-terminated list of IRQs to be probed. */
  54 static unsigned short irqlist[] = {
  55         7, 6, 5, 4, 3, 12, 11, 10, 9,
  56         0
  57 };
  58
  59 /* A zero-terminated list of DMAs to be probed. */
  60 static int dmalist[] __initdata = {
  61         5, 6, 7,
  62         0
  63 };
  64
  65 static char cardname[] = "Proteon 1392\0";
  66 static u64 dma_mask = ISA_MAX_ADDRESS;
  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, struct device *pdev)
 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 out5;
 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         pdev->dma_mask = &dma_mask;
 149         if (tmsdev_init(dev, pdev))
 150                 goto out4;
 151
 152         dev->base_addr &= ~3;
 153
 154         proteon_read_eeprom(dev);
 155
 156         printk(KERN_DEBUG "proteon.c:    Ring Station Address: ");
 157         printk("%2.2x", dev->dev_addr[0]);
 158         for (j = 1; j < 6; j++)
 159                 printk(":%2.2x", dev->dev_addr[j]);
 160         printk("\n");
 161
 162         tp = netdev_priv(dev);
 163         tp->setnselout = proteon_setnselout_pins;
 164
 165         tp->sifreadb = proteon_sifreadb;
 166         tp->sifreadw = proteon_sifreadw;
 167         tp->sifwriteb = proteon_sifwriteb;
 168         tp->sifwritew = proteon_sifwritew;
 169
 170         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
 171
 172         tp->tmspriv = NULL;
 173
 174         dev->open = proteon_open;
 175         dev->stop = tms380tr_close;
 176
 177         if (dev->irq == 0)
 178         {
 179                 for(j = 0; irqlist[j] != 0; j++)
 180                 {
 181                         dev->irq = irqlist[j];
 182                         if (!request_irq(dev->irq, tms380tr_interrupt, 0,
 183                                 cardname, dev))
 184                                 break;
 185                 }
 186
 187                 if(irqlist[j] == 0)
 188                 {
 189                         printk(KERN_INFO "proteon.c: AutoSelect no IRQ available\n");
 190                         goto out3;
 191                 }
 192         }
 193         else
 194         {
 195                 for(j = 0; irqlist[j] != 0; j++)
 196                         if (irqlist[j] == dev->irq)
 197                                 break;
 198                 if (irqlist[j] == 0)
 199                 {
 200                         printk(KERN_INFO "proteon.c: Illegal IRQ %d specified\n",
 201                                 dev->irq);
 202                         goto out3;
 203                 }
 204                 if (request_irq(dev->irq, tms380tr_interrupt, 0,
 205                         cardname, dev))
 206                 {
 207                         printk(KERN_INFO "proteon.c: Selected IRQ %d not available\n",
 208                                 dev->irq);
 209                         goto out3;
 210                 }
 211         }
 212
 213         if (dev->dma == 0)
 214         {
 215                 for(j = 0; dmalist[j] != 0; j++)
 216                 {
 217                         dev->dma = dmalist[j];
 218                         if (!request_dma(dev->dma, cardname))
 219                                 break;
 220                 }
 221
 222                 if(dmalist[j] == 0)
 223                 {
 224                         printk(KERN_INFO "proteon.c: AutoSelect no DMA available\n");
 225                         goto out2;
 226                 }
 227         }
 228         else
 229         {
 230                 for(j = 0; dmalist[j] != 0; j++)
 231                         if (dmalist[j] == dev->dma)
 232                                 break;
 233                 if (dmalist[j] == 0)
 234                 {
 235                         printk(KERN_INFO "proteon.c: Illegal DMA %d specified\n",
 236                                 dev->dma);
 237                         goto out2;
 238                 }
 239                 if (request_dma(dev->dma, cardname))
 240                 {
 241                         printk(KERN_INFO "proteon.c: Selected DMA %d not available\n",
 242                                 dev->dma);
 243                         goto out2;
 244                 }
 245         }
 246
 247         err = register_netdev(dev);
 248         if (err)
 249                 goto out;
 250
 251         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
 252                dev->name, dev->base_addr, dev->irq, dev->dma);
 253
 254         return 0;
 255 out:
 256         free_dma(dev->dma);
 257 out2:
 258         free_irq(dev->irq, dev);
 259 out3:
 260         tmsdev_term(dev);
 261 out4:
 262         release_region(dev->base_addr, PROTEON_IO_EXTENT);
 263 out5:
 264         return err;
 265 }
 266
 267 /*
 268  * Reads MAC address from adapter RAM, which should've read it from
 269  * the onboard ROM.
 270  *
 271  * Calling this on a board that does not support it can be a very
 272  * dangerous thing.  The Madge board, for instance, will lock your
 273  * machine hard when this is called.  Luckily, its supported in a
 274  * separate driver.  --ASF
 275  */
 276 static void proteon_read_eeprom(struct net_device *dev)
 277 {
 278         int i;
 279
 280         /* Address: 0000:0000 */
 281         proteon_sifwritew(dev, 0, SIFADX);
 282         proteon_sifwritew(dev, 0, SIFADR);
 283
 284         /* Read six byte MAC address data */
 285         dev->addr_len = 6;
 286         for(i = 0; i < 6; i++)
 287                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
 288 }
 289
 290 unsigned short proteon_setnselout_pins(struct net_device *dev)
 291 {
 292         return 0;
 293 }
 294
 295 static int proteon_open(struct net_device *dev)
 296 {
 297         struct net_local *tp = netdev_priv(dev);
 298         unsigned short val = 0;
 299         int i;
 300
 301         /* Proteon reset sequence */
 302         outb(0, dev->base_addr + 0x11);
 303         mdelay(20);
 304         outb(0x04, dev->base_addr + 0x11);
 305         mdelay(20);
 306         outb(0, dev->base_addr + 0x11);
 307         mdelay(100);
 308
 309         /* set control/status reg */
 310         val = inb(dev->base_addr + 0x11);
 311         val |= 0x78;
 312         val &= 0xf9;
 313         if(tp->DataRate == SPEED_4)
 314                 val |= 0x20;
 315         else
 316                 val &= ~0x20;
 317
 318         outb(val, dev->base_addr + 0x11);
 319         outb(0xff, dev->base_addr + 0x12);
 320         for(i = 0; irqlist[i] != 0; i++)
 321         {
 322                 if(irqlist[i] == dev->irq)
 323                         break;
 324         }
 325         val = i;
 326         i = (7 - dev->dma) << 4;
 327         val |= i;
 328         outb(val, dev->base_addr + 0x13);
 329
 330         return tms380tr_open(dev);
 331 }
 332
 333 #define ISATR_MAX_ADAPTERS 3
 334
 335 static int io[ISATR_MAX_ADAPTERS];
 336 static int irq[ISATR_MAX_ADAPTERS];
 337 static int dma[ISATR_MAX_ADAPTERS];
 338
 339 MODULE_LICENSE("GPL");
 340
 341 module_param_array(io, int, NULL, 0);
 342 module_param_array(irq, int, NULL, 0);
 343 module_param_array(dma, int, NULL, 0);
 344
 345 static struct platform_device *proteon_dev[ISATR_MAX_ADAPTERS];
 346
 347 static struct device_driver proteon_driver = {
 348         .name           = "proteon",
 349         .bus            = &platform_bus_type,
 350 };
 351
 352 static int __init proteon_init(void)
 353 {
 354         struct net_device *dev;
 355         struct platform_device *pdev;
 356         int i, num = 0, err = 0;
 357
 358         err = driver_register(&proteon_driver);
 359         if (err)
 360                 return err;
 361
 362         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 363                 dev = alloc_trdev(sizeof(struct net_local));
 364                 if (!dev)
 365                         continue;
 366
 367                 dev->base_addr = io[i];
 368                 dev->irq = irq[i];
 369                 dev->dma = dma[i];
 370                 pdev = platform_device_register_simple("proteon",
 371                         i, NULL, 0);
 372                 err = setup_card(dev, &pdev->dev);
 373                 if (!err) {
 374                         proteon_dev[i] = pdev;
 375                         dev_set_drvdata(&pdev->dev, dev);
 376                         ++num;
 377                 } else {
 378                         platform_device_unregister(pdev);
 379                         free_netdev(dev);
 380                 }
 381         }
 382
 383         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
 384         /* Probe for cards. */
 385         if (num == 0) {
 386                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
 387                 return (-ENODEV);
 388         }
 389         return (0);
 390 }
 391
 392 static void __exit proteon_cleanup(void)
 393 {
 394         struct net_device *dev;
 395         int i;
 396
 397         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 398                 struct platform_device *pdev = proteon_dev[i];
 399
 400                 if (!pdev)
 401                         continue;
 402                 dev = dev_get_drvdata(&pdev->dev);
 403                 unregister_netdev(dev);
 404                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
 405                 free_irq(dev->irq, dev);
 406                 free_dma(dev->dma);
 407                 tmsdev_term(dev);
 408                 free_netdev(dev);
 409                 dev_set_drvdata(&pdev->dev, NULL);
 410                 platform_device_unregister(pdev);
 411         }
 412         driver_unregister(&proteon_driver);
 413 }
 414
 415 module_init(proteon_init);
 416 module_exit(proteon_cleanup);