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   1 /* $Id: t1isa.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $
   2  *
   3  * Module for AVM T1 HEMA-card.
   4  *
   5  * Copyright 1999 by Carsten Paeth <calle@calle.de>
   6  *
   7  * This software may be used and distributed according to the terms
   8  * of the GNU General Public License, incorporated herein by reference.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/skbuff.h>
  15 #include <linux/delay.h>
  16 #include <linux/mm.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/ioport.h>
  19 #include <linux/capi.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/kernelcapi.h>
  22 #include <linux/init.h>
  23 #include <linux/pci.h>
  24 #include <asm/io.h>
  25 #include <linux/isdn/capicmd.h>
  26 #include <linux/isdn/capiutil.h>
  27 #include <linux/isdn/capilli.h>
  28 #include "avmcard.h"
  29
  30 /* ------------------------------------------------------------- */
  31
  32 static char *revision = "$Revision: 1.1.2.3 $";
  33
  34 /* ------------------------------------------------------------- */
  35
  36 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card");
  37 MODULE_AUTHOR("Carsten Paeth");
  38 MODULE_LICENSE("GPL");
  39
  40 /* ------------------------------------------------------------- */
  41
  42 static int hema_irq_table[16] =
  43 {0,
  44  0,
  45  0,
  46  0x80,                          /* irq 3 */
  47  0,
  48  0x90,                          /* irq 5 */
  49  0,
  50  0xA0,                          /* irq 7 */
  51  0,
  52  0xB0,                          /* irq 9 */
  53  0xC0,                          /* irq 10 */
  54  0xD0,                          /* irq 11 */
  55  0xE0,                          /* irq 12 */
  56  0,
  57  0,
  58  0xF0,                          /* irq 15 */
  59 };
  60
  61 static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
  62 {
  63         unsigned char cregs[8];
  64         unsigned char reverse_cardnr;
  65         unsigned char dummy;
  66         int i;
  67
  68         reverse_cardnr =   ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
  69                          | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
  70         cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
  71         cregs[1] = 0x00; /* fast & slow link connected to CON1 */
  72         cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
  73         cregs[3] = 0;
  74         cregs[4] = 0x11; /* zero wait state */
  75         cregs[5] = hema_irq_table[irq & 0xf];
  76         cregs[6] = 0;
  77         cregs[7] = 0;
  78
  79         /*
  80          * no one else should use the ISA bus in this moment,
  81          * but no function there to prevent this :-(
  82          * save_flags(flags); cli();
  83          */
  84
  85         /* board reset */
  86         t1outp(base, T1_RESETBOARD, 0xf);
  87         mdelay(100);
  88         dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */
  89
  90         /* write config */
  91         dummy = (base >> 4) & 0xff;
  92         for (i=1;i<=0xf;i++) t1outp(base, i, dummy);
  93         t1outp(base, HEMA_PAL_ID & 0xf, dummy);
  94         t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
  95         for(i=1;i<7;i++) t1outp(base, 0, cregs[i]);
  96         t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
  97         /* restore_flags(flags); */
  98
  99         mdelay(100);
 100         t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
 101         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
 102         mdelay(10);
 103         t1outp(base, T1_FASTLINK+T1_RESETLINK, 1);
 104         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1);
 105         mdelay(100);
 106         t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
 107         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
 108         mdelay(10);
 109         t1outp(base, T1_FASTLINK+T1_ANALYSE, 0);
 110         mdelay(5);
 111         t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0);
 112
 113         if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */
 114                 return 1;
 115         if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */
 116                 return 2;
 117         if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0)
 118                 return 3;
 119         if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70)
 120                 return 4;
 121         if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0)
 122                 return 5;
 123         if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1)
 124                 return 6;
 125         if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */
 126                 return 7;
 127         if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0)
 128                 return 8;
 129         if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0)
 130                 return 9;
 131         return 0;
 132 }
 133
 134 static irqreturn_t t1isa_interrupt(int interrupt, void *devptr)
 135 {
 136         avmcard *card = devptr;
 137         avmctrl_info *cinfo = &card->ctrlinfo[0];
 138         struct capi_ctr *ctrl = &cinfo->capi_ctrl;
 139         unsigned char b1cmd;
 140         struct sk_buff *skb;
 141
 142         unsigned ApplId;
 143         unsigned MsgLen;
 144         unsigned DataB3Len;
 145         unsigned NCCI;
 146         unsigned WindowSize;
 147         unsigned long flags;
 148
 149         spin_lock_irqsave(&card->lock, flags);
 150
 151         while (b1_rx_full(card->port)) {
 152
 153                 b1cmd = b1_get_byte(card->port);
 154
 155                 switch (b1cmd) {
 156
 157                 case RECEIVE_DATA_B3_IND:
 158
 159                         ApplId = (unsigned) b1_get_word(card->port);
 160                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 161                         DataB3Len = t1_get_slice(card->port, card->databuf);
 162                         spin_unlock_irqrestore(&card->lock, flags);
 163
 164                         if (MsgLen < 30) { /* not CAPI 64Bit */
 165                                 memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
 166                                 MsgLen = 30;
 167                                 CAPIMSG_SETLEN(card->msgbuf, 30);
 168                         }
 169                         if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
 170                                 printk(KERN_ERR "%s: incoming packet dropped\n",
 171                                         card->name);
 172                         } else {
 173                                 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
 174                                 memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
 175                                 capi_ctr_handle_message(ctrl, ApplId, skb);
 176                         }
 177                         break;
 178
 179                 case RECEIVE_MESSAGE:
 180
 181                         ApplId = (unsigned) b1_get_word(card->port);
 182                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 183                         if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
 184                                 spin_unlock_irqrestore(&card->lock, flags);
 185                                 printk(KERN_ERR "%s: incoming packet dropped\n",
 186                                                 card->name);
 187                         } else {
 188                                 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
 189                                 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3)
 190                                         capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
 191                                                              CAPIMSG_NCCI(skb->data),
 192                                                              CAPIMSG_MSGID(skb->data));
 193                                 spin_unlock_irqrestore(&card->lock, flags);
 194                                 capi_ctr_handle_message(ctrl, ApplId, skb);
 195                         }
 196                         break;
 197
 198                 case RECEIVE_NEW_NCCI:
 199
 200                         ApplId = b1_get_word(card->port);
 201                         NCCI = b1_get_word(card->port);
 202                         WindowSize = b1_get_word(card->port);
 203                         capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
 204                         spin_unlock_irqrestore(&card->lock, flags);
 205                         break;
 206
 207                 case RECEIVE_FREE_NCCI:
 208
 209                         ApplId = b1_get_word(card->port);
 210                         NCCI = b1_get_word(card->port);
 211                         if (NCCI != 0xffffffff)
 212                                 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
 213                         spin_unlock_irqrestore(&card->lock, flags);
 214                         break;
 215
 216                 case RECEIVE_START:
 217                         b1_put_byte(card->port, SEND_POLLACK);
 218                         spin_unlock_irqrestore(&card->lock, flags);
 219                         capi_ctr_resume_output(ctrl);
 220                         break;
 221
 222                 case RECEIVE_STOP:
 223                         spin_unlock_irqrestore(&card->lock, flags);
 224                         capi_ctr_suspend_output(ctrl);
 225                         break;
 226
 227                 case RECEIVE_INIT:
 228
 229                         cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
 230                         spin_unlock_irqrestore(&card->lock, flags);
 231                         b1_parse_version(cinfo);
 232                         printk(KERN_INFO "%s: %s-card (%s) now active\n",
 233                                card->name,
 234                                cinfo->version[VER_CARDTYPE],
 235                                cinfo->version[VER_DRIVER]);
 236                         capi_ctr_ready(ctrl);
 237                         break;
 238
 239                 case RECEIVE_TASK_READY:
 240                         ApplId = (unsigned) b1_get_word(card->port);
 241                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 242                         spin_unlock_irqrestore(&card->lock, flags);
 243                         card->msgbuf[MsgLen] = 0;
 244                         while (    MsgLen > 0
 245                                && (   card->msgbuf[MsgLen-1] == '\n'
 246                                    || card->msgbuf[MsgLen-1] == '\r')) {
 247                                 card->msgbuf[MsgLen-1] = 0;
 248                                 MsgLen--;
 249                         }
 250                         printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
 251                                         card->name, ApplId, card->msgbuf);
 252                         break;
 253
 254                 case RECEIVE_DEBUGMSG:
 255                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 256                         spin_unlock_irqrestore(&card->lock, flags);
 257                         card->msgbuf[MsgLen] = 0;
 258                         while (    MsgLen > 0
 259                                && (   card->msgbuf[MsgLen-1] == '\n'
 260                                    || card->msgbuf[MsgLen-1] == '\r')) {
 261                                 card->msgbuf[MsgLen-1] = 0;
 262                                 MsgLen--;
 263                         }
 264                         printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
 265                         break;
 266
 267
 268                 case 0xff:
 269                         spin_unlock_irqrestore(&card->lock, flags);
 270                         printk(KERN_ERR "%s: card reseted ?\n", card->name);
 271                         return IRQ_HANDLED;
 272                 default:
 273                         spin_unlock_irqrestore(&card->lock, flags);
 274                         printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
 275                                         card->name, b1cmd);
 276                         return IRQ_NONE;
 277                 }
 278         }
 279         return IRQ_HANDLED;
 280 }
 281
 282 /* ------------------------------------------------------------- */
 283
 284 static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
 285 {
 286         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 287         avmcard *card = cinfo->card;
 288         unsigned int port = card->port;
 289         unsigned long flags;
 290         int retval;
 291
 292         t1_disable_irq(port);
 293         b1_reset(port);
 294
 295         if ((retval = b1_load_t4file(card, &data->firmware))) {
 296                 b1_reset(port);
 297                 printk(KERN_ERR "%s: failed to load t4file!!\n",
 298                                         card->name);
 299                 return retval;
 300         }
 301
 302         if (data->configuration.len > 0 && data->configuration.data) {
 303                 if ((retval = b1_load_config(card, &data->configuration))) {
 304                         b1_reset(port);
 305                         printk(KERN_ERR "%s: failed to load config!!\n",
 306                                         card->name);
 307                         return retval;
 308                 }
 309         }
 310
 311         if (!b1_loaded(card)) {
 312                 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
 313                 return -EIO;
 314         }
 315
 316         spin_lock_irqsave(&card->lock, flags);
 317         b1_setinterrupt(port, card->irq, card->cardtype);
 318         b1_put_byte(port, SEND_INIT);
 319         b1_put_word(port, CAPI_MAXAPPL);
 320         b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
 321         b1_put_word(port, ctrl->cnr - 1);
 322         spin_unlock_irqrestore(&card->lock, flags);
 323
 324         return 0;
 325 }
 326
 327 static void t1isa_reset_ctr(struct capi_ctr *ctrl)
 328 {
 329         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 330         avmcard *card = cinfo->card;
 331         unsigned int port = card->port;
 332         unsigned long flags;
 333
 334         t1_disable_irq(port);
 335         b1_reset(port);
 336         b1_reset(port);
 337
 338         memset(cinfo->version, 0, sizeof(cinfo->version));
 339         spin_lock_irqsave(&card->lock, flags);
 340         capilib_release(&cinfo->ncci_head);
 341         spin_unlock_irqrestore(&card->lock, flags);
 342         capi_ctr_down(ctrl);
 343 }
 344
 345 static void t1isa_remove(struct pci_dev *pdev)
 346 {
 347         avmctrl_info *cinfo = pci_get_drvdata(pdev);
 348         avmcard *card;
 349
 350         if (!cinfo)
 351                 return;
 352
 353         card = cinfo->card;
 354
 355         t1_disable_irq(card->port);
 356         b1_reset(card->port);
 357         b1_reset(card->port);
 358         t1_reset(card->port);
 359
 360         detach_capi_ctr(&cinfo->capi_ctrl);
 361         free_irq(card->irq, card);
 362         release_region(card->port, AVMB1_PORTLEN);
 363         b1_free_card(card);
 364 }
 365
 366 /* ------------------------------------------------------------- */
 367
 368 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
 369 static char *t1isa_procinfo(struct capi_ctr *ctrl);
 370
 371 static int t1isa_probe(struct pci_dev *pdev, int cardnr)
 372 {
 373         avmctrl_info *cinfo;
 374         avmcard *card;
 375         int retval;
 376
 377         card = b1_alloc_card(1);
 378         if (!card) {
 379                 printk(KERN_WARNING "t1isa: no memory.\n");
 380                 retval = -ENOMEM;
 381                 goto err;
 382         }
 383
 384         cinfo = card->ctrlinfo;
 385         card->port = pci_resource_start(pdev, 0);
 386         card->irq = pdev->irq;
 387         card->cardtype = avm_t1isa;
 388         card->cardnr = cardnr;
 389         sprintf(card->name, "t1isa-%x", card->port);
 390
 391         if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
 392                 printk(KERN_WARNING "t1isa: invalid port 0x%x.\n", card->port);
 393                 retval = -EINVAL;
 394                 goto err_free;
 395         }
 396         if (hema_irq_table[card->irq & 0xf] == 0) {
 397                 printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq);
 398                 retval = -EINVAL;
 399                 goto err_free;
 400         }
 401         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
 402                 printk(KERN_INFO "t1isa: ports 0x%03x-0x%03x in use.\n",
 403                        card->port, card->port + AVMB1_PORTLEN);
 404                 retval = -EBUSY;
 405                 goto err_free;
 406         }
 407         retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card);
 408         if (retval) {
 409                 printk(KERN_INFO "t1isa: unable to get IRQ %d.\n", card->irq);
 410                 retval = -EBUSY;
 411                 goto err_release_region;
 412         }
 413
 414         if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) {
 415                 printk(KERN_INFO "t1isa: NO card at 0x%x (%d)\n",
 416                        card->port, retval);
 417                 retval = -ENODEV;
 418                 goto err_free_irq;
 419         }
 420         t1_disable_irq(card->port);
 421         b1_reset(card->port);
 422
 423         cinfo->capi_ctrl.owner = THIS_MODULE;
 424         cinfo->capi_ctrl.driver_name   = "t1isa";
 425         cinfo->capi_ctrl.driverdata    = cinfo;
 426         cinfo->capi_ctrl.register_appl = b1_register_appl;
 427         cinfo->capi_ctrl.release_appl  = b1_release_appl;
 428         cinfo->capi_ctrl.send_message  = t1isa_send_message;
 429         cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
 430         cinfo->capi_ctrl.reset_ctr     = t1isa_reset_ctr;
 431         cinfo->capi_ctrl.procinfo      = t1isa_procinfo;
 432         cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 433         strcpy(cinfo->capi_ctrl.name, card->name);
 434
 435         retval = attach_capi_ctr(&cinfo->capi_ctrl);
 436         if (retval) {
 437                 printk(KERN_INFO "t1isa: attach controller failed.\n");
 438                 goto err_free_irq;
 439         }
 440
 441         printk(KERN_INFO "t1isa: AVM T1 ISA at i/o %#x, irq %d, card %d\n",
 442                card->port, card->irq, card->cardnr);
 443
 444         pci_set_drvdata(pdev, cinfo);
 445         return 0;
 446
 447  err_free_irq:
 448         free_irq(card->irq, card);
 449  err_release_region:
 450         release_region(card->port, AVMB1_PORTLEN);
 451  err_free:
 452         b1_free_card(card);
 453  err:
 454         return retval;
 455 }
 456
 457 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
 458 {
 459         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 460         avmcard *card = cinfo->card;
 461         unsigned int port = card->port;
 462         unsigned long flags;
 463         u16 len = CAPIMSG_LEN(skb->data);
 464         u8 cmd = CAPIMSG_COMMAND(skb->data);
 465         u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 466         u16 dlen, retval;
 467
 468         spin_lock_irqsave(&card->lock, flags);
 469         if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
 470                 retval = capilib_data_b3_req(&cinfo->ncci_head,
 471                                              CAPIMSG_APPID(skb->data),
 472                                              CAPIMSG_NCCI(skb->data),
 473                                              CAPIMSG_MSGID(skb->data));
 474                 if (retval != CAPI_NOERROR) {
 475                         spin_unlock_irqrestore(&card->lock, flags);
 476                         return retval;
 477                 }
 478                 dlen = CAPIMSG_DATALEN(skb->data);
 479
 480                 b1_put_byte(port, SEND_DATA_B3_REQ);
 481                 t1_put_slice(port, skb->data, len);
 482                 t1_put_slice(port, skb->data + len, dlen);
 483         } else {
 484                 b1_put_byte(port, SEND_MESSAGE);
 485                 t1_put_slice(port, skb->data, len);
 486         }
 487         spin_unlock_irqrestore(&card->lock, flags);
 488         dev_kfree_skb_any(skb);
 489         return CAPI_NOERROR;
 490 }
 491 /* ------------------------------------------------------------- */
 492
 493 static char *t1isa_procinfo(struct capi_ctr *ctrl)
 494 {
 495         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 496
 497         if (!cinfo)
 498                 return "";
 499         sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
 500                 cinfo->cardname[0] ? cinfo->cardname : "-",
 501                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 502                 cinfo->card ? cinfo->card->port : 0x0,
 503                 cinfo->card ? cinfo->card->irq : 0,
 504                 cinfo->card ? cinfo->card->cardnr : 0
 505                 );
 506         return cinfo->infobuf;
 507 }
 508
 509
 510 /* ------------------------------------------------------------- */
 511
 512 #define MAX_CARDS 4
 513 static struct pci_dev isa_dev[MAX_CARDS];
 514 static int io[MAX_CARDS];
 515 static int irq[MAX_CARDS];
 516 static int cardnr[MAX_CARDS];
 517
 518 module_param_array(io, int, NULL, 0);
 519 module_param_array(irq, int, NULL, 0);
 520 module_param_array(cardnr, int, NULL, 0);
 521 MODULE_PARM_DESC(io, "I/O base address(es)");
 522 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
 523 MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
 524
 525 static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
 526 {
 527         int i;
 528
 529         for (i = 0; i < MAX_CARDS; i++) {
 530                 if (isa_dev[i].resource[0].start)
 531                         continue;
 532
 533                 isa_dev[i].resource[0].start = data->port;
 534                 isa_dev[i].irq = data->irq;
 535
 536                 if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
 537                         return 0;
 538         }
 539         return -ENODEV;
 540 }
 541
 542 static struct capi_driver capi_driver_t1isa = {
 543         .name           = "t1isa",
 544         .revision       = "1.0",
 545         .add_card       = t1isa_add_card,
 546 };
 547
 548 static int __init t1isa_init(void)
 549 {
 550         char rev[32];
 551         char *p;
 552         int i;
 553
 554         if ((p = strchr(revision, ':')) != NULL && p[1]) {
 555                 strlcpy(rev, p + 2, 32);
 556                 if ((p = strchr(rev, '$')) != NULL && p > rev)
 557                    *(p-1) = 0;
 558         } else
 559                 strcpy(rev, "1.0");
 560
 561         for (i = 0; i < MAX_CARDS; i++) {
 562                 if (!io[i])
 563                         break;
 564
 565                 isa_dev[i].resource[0].start = io[i];
 566                 isa_dev[i].irq = irq[i];
 567
 568                 if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
 569                         return -ENODEV;
 570         }
 571
 572         strlcpy(capi_driver_t1isa.revision, rev, 32);
 573         register_capi_driver(&capi_driver_t1isa);
 574         printk(KERN_INFO "t1isa: revision %s\n", rev);
 575
 576         return 0;
 577 }
 578
 579 static void __exit t1isa_exit(void)
 580 {
 581         int i;
 582
 583         unregister_capi_driver(&capi_driver_t1isa);
 584         for (i = 0; i < MAX_CARDS; i++) {
 585                 if (!io[i])
 586                         break;
 587
 588                 t1isa_remove(&isa_dev[i]);
 589         }
 590 }
 591
 592 module_init(t1isa_init);
 593 module_exit(t1isa_exit);