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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                         spin_unlock_irqrestore(&card->lock, flags);
 184                         if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
 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
 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                         spin_unlock_irqrestore(&card->lock, flags);
 204
 205                         capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
 206
 207                         break;
 208
 209                 case RECEIVE_FREE_NCCI:
 210
 211                         ApplId = b1_get_word(card->port);
 212                         NCCI = b1_get_word(card->port);
 213                         spin_unlock_irqrestore(&card->lock, flags);
 214
 215                         if (NCCI != 0xffffffff)
 216                                 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
 217
 218                         break;
 219
 220                 case RECEIVE_START:
 221                         b1_put_byte(card->port, SEND_POLLACK);
 222                         spin_unlock_irqrestore(&card->lock, flags);
 223                         capi_ctr_resume_output(ctrl);
 224                         break;
 225
 226                 case RECEIVE_STOP:
 227                         spin_unlock_irqrestore(&card->lock, flags);
 228                         capi_ctr_suspend_output(ctrl);
 229                         break;
 230
 231                 case RECEIVE_INIT:
 232
 233                         cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
 234                         spin_unlock_irqrestore(&card->lock, flags);
 235                         b1_parse_version(cinfo);
 236                         printk(KERN_INFO "%s: %s-card (%s) now active\n",
 237                                card->name,
 238                                cinfo->version[VER_CARDTYPE],
 239                                cinfo->version[VER_DRIVER]);
 240                         capi_ctr_ready(ctrl);
 241                         break;
 242
 243                 case RECEIVE_TASK_READY:
 244                         ApplId = (unsigned) b1_get_word(card->port);
 245                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 246                         spin_unlock_irqrestore(&card->lock, flags);
 247                         card->msgbuf[MsgLen] = 0;
 248                         while (    MsgLen > 0
 249                                && (   card->msgbuf[MsgLen-1] == '\n'
 250                                    || card->msgbuf[MsgLen-1] == '\r')) {
 251                                 card->msgbuf[MsgLen-1] = 0;
 252                                 MsgLen--;
 253                         }
 254                         printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
 255                                         card->name, ApplId, card->msgbuf);
 256                         break;
 257
 258                 case RECEIVE_DEBUGMSG:
 259                         MsgLen = t1_get_slice(card->port, card->msgbuf);
 260                         spin_unlock_irqrestore(&card->lock, flags);
 261                         card->msgbuf[MsgLen] = 0;
 262                         while (    MsgLen > 0
 263                                && (   card->msgbuf[MsgLen-1] == '\n'
 264                                    || card->msgbuf[MsgLen-1] == '\r')) {
 265                                 card->msgbuf[MsgLen-1] = 0;
 266                                 MsgLen--;
 267                         }
 268                         printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
 269                         break;
 270
 271
 272                 case 0xff:
 273                         spin_unlock_irqrestore(&card->lock, flags);
 274                         printk(KERN_ERR "%s: card reseted ?\n", card->name);
 275                         return IRQ_HANDLED;
 276                 default:
 277                         spin_unlock_irqrestore(&card->lock, flags);
 278                         printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
 279                                         card->name, b1cmd);
 280                         return IRQ_NONE;
 281                 }
 282         }
 283         return IRQ_HANDLED;
 284 }
 285
 286 /* ------------------------------------------------------------- */
 287
 288 static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
 289 {
 290         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 291         avmcard *card = cinfo->card;
 292         unsigned int port = card->port;
 293         unsigned long flags;
 294         int retval;
 295
 296         t1_disable_irq(port);
 297         b1_reset(port);
 298
 299         if ((retval = b1_load_t4file(card, &data->firmware))) {
 300                 b1_reset(port);
 301                 printk(KERN_ERR "%s: failed to load t4file!!\n",
 302                                         card->name);
 303                 return retval;
 304         }
 305
 306         if (data->configuration.len > 0 && data->configuration.data) {
 307                 if ((retval = b1_load_config(card, &data->configuration))) {
 308                         b1_reset(port);
 309                         printk(KERN_ERR "%s: failed to load config!!\n",
 310                                         card->name);
 311                         return retval;
 312                 }
 313         }
 314
 315         if (!b1_loaded(card)) {
 316                 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
 317                 return -EIO;
 318         }
 319
 320         spin_lock_irqsave(&card->lock, flags);
 321         b1_setinterrupt(port, card->irq, card->cardtype);
 322         b1_put_byte(port, SEND_INIT);
 323         b1_put_word(port, CAPI_MAXAPPL);
 324         b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
 325         b1_put_word(port, ctrl->cnr - 1);
 326         spin_unlock_irqrestore(&card->lock, flags);
 327
 328         return 0;
 329 }
 330
 331 static void t1isa_reset_ctr(struct capi_ctr *ctrl)
 332 {
 333         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 334         avmcard *card = cinfo->card;
 335         unsigned int port = card->port;
 336
 337         t1_disable_irq(port);
 338         b1_reset(port);
 339         b1_reset(port);
 340
 341         memset(cinfo->version, 0, sizeof(cinfo->version));
 342         capilib_release(&cinfo->ncci_head);
 343         capi_ctr_reseted(ctrl);
 344 }
 345
 346 static void t1isa_remove(struct pci_dev *pdev)
 347 {
 348         avmctrl_info *cinfo = pci_get_drvdata(pdev);
 349         avmcard *card;
 350
 351         if (!cinfo)
 352                 return;
 353
 354         card = cinfo->card;
 355
 356         t1_disable_irq(card->port);
 357         b1_reset(card->port);
 358         b1_reset(card->port);
 359         t1_reset(card->port);
 360
 361         detach_capi_ctr(&cinfo->capi_ctrl);
 362         free_irq(card->irq, card);
 363         release_region(card->port, AVMB1_PORTLEN);
 364         b1_free_card(card);
 365 }
 366
 367 /* ------------------------------------------------------------- */
 368
 369 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
 370 static char *t1isa_procinfo(struct capi_ctr *ctrl);
 371
 372 static int t1isa_probe(struct pci_dev *pdev, int cardnr)
 373 {
 374         avmctrl_info *cinfo;
 375         avmcard *card;
 376         int retval;
 377
 378         card = b1_alloc_card(1);
 379         if (!card) {
 380                 printk(KERN_WARNING "t1isa: no memory.\n");
 381                 retval = -ENOMEM;
 382                 goto err;
 383         }
 384
 385         cinfo = card->ctrlinfo;
 386         card->port = pci_resource_start(pdev, 0);
 387         card->irq = pdev->irq;
 388         card->cardtype = avm_t1isa;
 389         card->cardnr = cardnr;
 390         sprintf(card->name, "t1isa-%x", card->port);
 391
 392         if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
 393                 printk(KERN_WARNING "t1isa: invalid port 0x%x.\n", card->port);
 394                 retval = -EINVAL;
 395                 goto err_free;
 396         }
 397         if (hema_irq_table[card->irq & 0xf] == 0) {
 398                 printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq);
 399                 retval = -EINVAL;
 400                 goto err_free;
 401         }
 402         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
 403                 printk(KERN_INFO "t1isa: ports 0x%03x-0x%03x in use.\n",
 404                        card->port, card->port + AVMB1_PORTLEN);
 405                 retval = -EBUSY;
 406                 goto err_free;
 407         }
 408         retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card);
 409         if (retval) {
 410                 printk(KERN_INFO "t1isa: unable to get IRQ %d.\n", card->irq);
 411                 retval = -EBUSY;
 412                 goto err_release_region;
 413         }
 414
 415         if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) {
 416                 printk(KERN_INFO "t1isa: NO card at 0x%x (%d)\n",
 417                        card->port, retval);
 418                 retval = -ENODEV;
 419                 goto err_free_irq;
 420         }
 421         t1_disable_irq(card->port);
 422         b1_reset(card->port);
 423
 424         cinfo->capi_ctrl.owner = THIS_MODULE;
 425         cinfo->capi_ctrl.driver_name   = "t1isa";
 426         cinfo->capi_ctrl.driverdata    = cinfo;
 427         cinfo->capi_ctrl.register_appl = b1_register_appl;
 428         cinfo->capi_ctrl.release_appl  = b1_release_appl;
 429         cinfo->capi_ctrl.send_message  = t1isa_send_message;
 430         cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
 431         cinfo->capi_ctrl.reset_ctr     = t1isa_reset_ctr;
 432         cinfo->capi_ctrl.procinfo      = t1isa_procinfo;
 433         cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
 434         strcpy(cinfo->capi_ctrl.name, card->name);
 435
 436         retval = attach_capi_ctr(&cinfo->capi_ctrl);
 437         if (retval) {
 438                 printk(KERN_INFO "t1isa: attach controller failed.\n");
 439                 goto err_free_irq;
 440         }
 441
 442         printk(KERN_INFO "t1isa: AVM T1 ISA at i/o %#x, irq %d, card %d\n",
 443                card->port, card->irq, card->cardnr);
 444
 445         pci_set_drvdata(pdev, cinfo);
 446         return 0;
 447
 448  err_free_irq:
 449         free_irq(card->irq, card);
 450  err_release_region:
 451         release_region(card->port, AVMB1_PORTLEN);
 452  err_free:
 453         b1_free_card(card);
 454  err:
 455         return retval;
 456 }
 457
 458 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
 459 {
 460         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 461         avmcard *card = cinfo->card;
 462         unsigned int port = card->port;
 463         unsigned long flags;
 464         u16 len = CAPIMSG_LEN(skb->data);
 465         u8 cmd = CAPIMSG_COMMAND(skb->data);
 466         u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 467         u16 dlen, retval;
 468
 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                         return retval;
 476
 477                 dlen = CAPIMSG_DATALEN(skb->data);
 478
 479                 spin_lock_irqsave(&card->lock, flags);
 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                 spin_unlock_irqrestore(&card->lock, flags);
 484         } else {
 485
 486                 spin_lock_irqsave(&card->lock, flags);
 487                 b1_put_byte(port, SEND_MESSAGE);
 488                 t1_put_slice(port, skb->data, len);
 489                 spin_unlock_irqrestore(&card->lock, flags);
 490         }
 491
 492         dev_kfree_skb_any(skb);
 493         return CAPI_NOERROR;
 494 }
 495 /* ------------------------------------------------------------- */
 496
 497 static char *t1isa_procinfo(struct capi_ctr *ctrl)
 498 {
 499         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 500
 501         if (!cinfo)
 502                 return "";
 503         sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
 504                 cinfo->cardname[0] ? cinfo->cardname : "-",
 505                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 506                 cinfo->card ? cinfo->card->port : 0x0,
 507                 cinfo->card ? cinfo->card->irq : 0,
 508                 cinfo->card ? cinfo->card->cardnr : 0
 509                 );
 510         return cinfo->infobuf;
 511 }
 512
 513
 514 /* ------------------------------------------------------------- */
 515
 516 #define MAX_CARDS 4
 517 static struct pci_dev isa_dev[MAX_CARDS];
 518 static int io[MAX_CARDS];
 519 static int irq[MAX_CARDS];
 520 static int cardnr[MAX_CARDS];
 521
 522 module_param_array(io, int, NULL, 0);
 523 module_param_array(irq, int, NULL, 0);
 524 module_param_array(cardnr, int, NULL, 0);
 525 MODULE_PARM_DESC(io, "I/O base address(es)");
 526 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
 527 MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
 528
 529 static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
 530 {
 531         int i;
 532
 533         for (i = 0; i < MAX_CARDS; i++) {
 534                 if (isa_dev[i].resource[0].start)
 535                         continue;
 536
 537                 isa_dev[i].resource[0].start = data->port;
 538                 isa_dev[i].irq = data->irq;
 539
 540                 if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
 541                         return 0;
 542         }
 543         return -ENODEV;
 544 }
 545
 546 static struct capi_driver capi_driver_t1isa = {
 547         .name           = "t1isa",
 548         .revision       = "1.0",
 549         .add_card       = t1isa_add_card,
 550 };
 551
 552 static int __init t1isa_init(void)
 553 {
 554         char rev[32];
 555         char *p;
 556         int i;
 557
 558         if ((p = strchr(revision, ':')) != 0 && p[1]) {
 559                 strlcpy(rev, p + 2, 32);
 560                 if ((p = strchr(rev, '$')) != 0 && p > rev)
 561                    *(p-1) = 0;
 562         } else
 563                 strcpy(rev, "1.0");
 564
 565         for (i = 0; i < MAX_CARDS; i++) {
 566                 if (!io[i])
 567                         break;
 568
 569                 isa_dev[i].resource[0].start = io[i];
 570                 isa_dev[i].irq = irq[i];
 571
 572                 if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
 573                         return -ENODEV;
 574         }
 575
 576         strlcpy(capi_driver_t1isa.revision, rev, 32);
 577         register_capi_driver(&capi_driver_t1isa);
 578         printk(KERN_INFO "t1isa: revision %s\n", rev);
 579
 580         return 0;
 581 }
 582
 583 static void __exit t1isa_exit(void)
 584 {
 585         int i;
 586
 587         for (i = 0; i < MAX_CARDS; i++) {
 588                 if (!io[i])
 589                         break;
 590
 591                 t1isa_remove(&isa_dev[i]);
 592         }
 593 }
 594
 595 module_init(t1isa_init);
 596 module_exit(t1isa_exit);