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
  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         if (dev->base_addr)     /* probe specific location */
 130                 err = proteon_probe1(dev, dev->base_addr);
 131         else {
 132                 for (port = portlist; *port; port++) {
 133                         err = proteon_probe1(dev, *port);
 134                         if (!err)
 135                                 break;
 136                 }
 137         }
 138         if (err)
 139                 goto out5;
 140
 141         /* At this point we have found a valid card. */
 142
 143         if (versionprinted++ == 0)
 144                 printk(KERN_DEBUG "%s", version);
 145
 146         err = -EIO;
 147         pdev->dma_mask = &dma_mask;
 148         if (tmsdev_init(dev, pdev))
 149                 goto out4;
 150
 151         dev->base_addr &= ~3;
 152
 153         proteon_read_eeprom(dev);
 154
 155         printk(KERN_DEBUG "proteon.c:    Ring Station Address: %pM\n",
 156                dev->dev_addr);
 157
 158         tp = netdev_priv(dev);
 159         tp->setnselout = proteon_setnselout_pins;
 160
 161         tp->sifreadb = proteon_sifreadb;
 162         tp->sifreadw = proteon_sifreadw;
 163         tp->sifwriteb = proteon_sifwriteb;
 164         tp->sifwritew = proteon_sifwritew;
 165
 166         memcpy(tp->ProductID, cardname, PROD_ID_SIZE + 1);
 167
 168         tp->tmspriv = NULL;
 169
 170         dev->open = proteon_open;
 171         dev->stop = tms380tr_close;
 172
 173         if (dev->irq == 0)
 174         {
 175                 for(j = 0; irqlist[j] != 0; j++)
 176                 {
 177                         dev->irq = irqlist[j];
 178                         if (!request_irq(dev->irq, tms380tr_interrupt, 0,
 179                                 cardname, dev))
 180                                 break;
 181                 }
 182
 183                 if(irqlist[j] == 0)
 184                 {
 185                         printk(KERN_INFO "proteon.c: AutoSelect no IRQ available\n");
 186                         goto out3;
 187                 }
 188         }
 189         else
 190         {
 191                 for(j = 0; irqlist[j] != 0; j++)
 192                         if (irqlist[j] == dev->irq)
 193                                 break;
 194                 if (irqlist[j] == 0)
 195                 {
 196                         printk(KERN_INFO "proteon.c: Illegal IRQ %d specified\n",
 197                                 dev->irq);
 198                         goto out3;
 199                 }
 200                 if (request_irq(dev->irq, tms380tr_interrupt, 0,
 201                         cardname, dev))
 202                 {
 203                         printk(KERN_INFO "proteon.c: Selected IRQ %d not available\n",
 204                                 dev->irq);
 205                         goto out3;
 206                 }
 207         }
 208
 209         if (dev->dma == 0)
 210         {
 211                 for(j = 0; dmalist[j] != 0; j++)
 212                 {
 213                         dev->dma = dmalist[j];
 214                         if (!request_dma(dev->dma, cardname))
 215                                 break;
 216                 }
 217
 218                 if(dmalist[j] == 0)
 219                 {
 220                         printk(KERN_INFO "proteon.c: AutoSelect no DMA available\n");
 221                         goto out2;
 222                 }
 223         }
 224         else
 225         {
 226                 for(j = 0; dmalist[j] != 0; j++)
 227                         if (dmalist[j] == dev->dma)
 228                                 break;
 229                 if (dmalist[j] == 0)
 230                 {
 231                         printk(KERN_INFO "proteon.c: Illegal DMA %d specified\n",
 232                                 dev->dma);
 233                         goto out2;
 234                 }
 235                 if (request_dma(dev->dma, cardname))
 236                 {
 237                         printk(KERN_INFO "proteon.c: Selected DMA %d not available\n",
 238                                 dev->dma);
 239                         goto out2;
 240                 }
 241         }
 242
 243         err = register_netdev(dev);
 244         if (err)
 245                 goto out;
 246
 247         printk(KERN_DEBUG "%s:    IO: %#4lx  IRQ: %d  DMA: %d\n",
 248                dev->name, dev->base_addr, dev->irq, dev->dma);
 249
 250         return 0;
 251 out:
 252         free_dma(dev->dma);
 253 out2:
 254         free_irq(dev->irq, dev);
 255 out3:
 256         tmsdev_term(dev);
 257 out4:
 258         release_region(dev->base_addr, PROTEON_IO_EXTENT);
 259 out5:
 260         return err;
 261 }
 262
 263 /*
 264  * Reads MAC address from adapter RAM, which should've read it from
 265  * the onboard ROM.
 266  *
 267  * Calling this on a board that does not support it can be a very
 268  * dangerous thing.  The Madge board, for instance, will lock your
 269  * machine hard when this is called.  Luckily, its supported in a
 270  * separate driver.  --ASF
 271  */
 272 static void proteon_read_eeprom(struct net_device *dev)
 273 {
 274         int i;
 275
 276         /* Address: 0000:0000 */
 277         proteon_sifwritew(dev, 0, SIFADX);
 278         proteon_sifwritew(dev, 0, SIFADR);
 279
 280         /* Read six byte MAC address data */
 281         dev->addr_len = 6;
 282         for(i = 0; i < 6; i++)
 283                 dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
 284 }
 285
 286 static unsigned short proteon_setnselout_pins(struct net_device *dev)
 287 {
 288         return 0;
 289 }
 290
 291 static int proteon_open(struct net_device *dev)
 292 {
 293         struct net_local *tp = netdev_priv(dev);
 294         unsigned short val = 0;
 295         int i;
 296
 297         /* Proteon reset sequence */
 298         outb(0, dev->base_addr + 0x11);
 299         mdelay(20);
 300         outb(0x04, dev->base_addr + 0x11);
 301         mdelay(20);
 302         outb(0, dev->base_addr + 0x11);
 303         mdelay(100);
 304
 305         /* set control/status reg */
 306         val = inb(dev->base_addr + 0x11);
 307         val |= 0x78;
 308         val &= 0xf9;
 309         if(tp->DataRate == SPEED_4)
 310                 val |= 0x20;
 311         else
 312                 val &= ~0x20;
 313
 314         outb(val, dev->base_addr + 0x11);
 315         outb(0xff, dev->base_addr + 0x12);
 316         for(i = 0; irqlist[i] != 0; i++)
 317         {
 318                 if(irqlist[i] == dev->irq)
 319                         break;
 320         }
 321         val = i;
 322         i = (7 - dev->dma) << 4;
 323         val |= i;
 324         outb(val, dev->base_addr + 0x13);
 325
 326         return tms380tr_open(dev);
 327 }
 328
 329 #define ISATR_MAX_ADAPTERS 3
 330
 331 static int io[ISATR_MAX_ADAPTERS];
 332 static int irq[ISATR_MAX_ADAPTERS];
 333 static int dma[ISATR_MAX_ADAPTERS];
 334
 335 MODULE_LICENSE("GPL");
 336
 337 module_param_array(io, int, NULL, 0);
 338 module_param_array(irq, int, NULL, 0);
 339 module_param_array(dma, int, NULL, 0);
 340
 341 static struct platform_device *proteon_dev[ISATR_MAX_ADAPTERS];
 342
 343 static struct platform_driver proteon_driver = {
 344         .driver         = {
 345                 .name   = "proteon",
 346         },
 347 };
 348
 349 static int __init proteon_init(void)
 350 {
 351         struct net_device *dev;
 352         struct platform_device *pdev;
 353         int i, num = 0, err = 0;
 354
 355         err = platform_driver_register(&proteon_driver);
 356         if (err)
 357                 return err;
 358
 359         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 360                 dev = alloc_trdev(sizeof(struct net_local));
 361                 if (!dev)
 362                         continue;
 363
 364                 dev->base_addr = io[i];
 365                 dev->irq = irq[i];
 366                 dev->dma = dma[i];
 367                 pdev = platform_device_register_simple("proteon",
 368                         i, NULL, 0);
 369                 if (IS_ERR(pdev)) {
 370                         free_netdev(dev);
 371                         continue;
 372                 }
 373                 err = setup_card(dev, &pdev->dev);
 374                 if (!err) {
 375                         proteon_dev[i] = pdev;
 376                         platform_set_drvdata(pdev, dev);
 377                         ++num;
 378                 } else {
 379                         platform_device_unregister(pdev);
 380                         free_netdev(dev);
 381                 }
 382         }
 383
 384         printk(KERN_NOTICE "proteon.c: %d cards found.\n", num);
 385         /* Probe for cards. */
 386         if (num == 0) {
 387                 printk(KERN_NOTICE "proteon.c: No cards found.\n");
 388                 platform_driver_unregister(&proteon_driver);
 389                 return -ENODEV;
 390         }
 391         return 0;
 392 }
 393
 394 static void __exit proteon_cleanup(void)
 395 {
 396         struct net_device *dev;
 397         int i;
 398
 399         for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
 400                 struct platform_device *pdev = proteon_dev[i];
 401
 402                 if (!pdev)
 403                         continue;
 404                 dev = platform_get_drvdata(pdev);
 405                 unregister_netdev(dev);
 406                 release_region(dev->base_addr, PROTEON_IO_EXTENT);
 407                 free_irq(dev->irq, dev);
 408                 free_dma(dev->dma);
 409                 tmsdev_term(dev);
 410                 free_netdev(dev);
 411                 platform_set_drvdata(pdev, NULL);
 412                 platform_device_unregister(pdev);
 413         }
 414         platform_driver_unregister(&proteon_driver);
 415 }
 416
 417 module_init(proteon_init);
 418 module_exit(proteon_cleanup);