linux/drivers/isdn/hardware/avm/t1isa.c
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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 <linux/gfp.h>
  25#include <asm/io.h>
  26#include <linux/isdn/capicmd.h>
  27#include <linux/isdn/capiutil.h>
  28#include <linux/isdn/capilli.h>
  29#include "avmcard.h"
  30
  31/* ------------------------------------------------------------- */
  32
  33static char *revision = "$Revision: 1.1.2.3 $";
  34
  35/* ------------------------------------------------------------- */
  36
  37MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card");
  38MODULE_AUTHOR("Carsten Paeth");
  39MODULE_LICENSE("GPL");
  40
  41/* ------------------------------------------------------------- */
  42
  43static int hema_irq_table[16] =
  44{0,
  45 0,
  46 0,
  47 0x80,                          /* irq 3 */
  48 0,
  49 0x90,                          /* irq 5 */
  50 0,
  51 0xA0,                          /* irq 7 */
  52 0,
  53 0xB0,                          /* irq 9 */
  54 0xC0,                          /* irq 10 */
  55 0xD0,                          /* irq 11 */
  56 0xE0,                          /* irq 12 */
  57 0,
  58 0,
  59 0xF0,                          /* irq 15 */
  60};
  61
  62static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
  63{
  64        unsigned char cregs[8];
  65        unsigned char reverse_cardnr;
  66        unsigned char dummy;
  67        int i;
  68
  69        reverse_cardnr =   ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
  70                | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
  71        cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
  72        cregs[1] = 0x00; /* fast & slow link connected to CON1 */
  73        cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
  74        cregs[3] = 0;
  75        cregs[4] = 0x11; /* zero wait state */
  76        cregs[5] = hema_irq_table[irq & 0xf];
  77        cregs[6] = 0;
  78        cregs[7] = 0;
  79
  80        /*
  81         * no one else should use the ISA bus in this moment,
  82         * but no function there to prevent this :-(
  83         * save_flags(flags); cli();
  84         */
  85
  86        /* board reset */
  87        t1outp(base, T1_RESETBOARD, 0xf);
  88        mdelay(100);
  89        dummy = t1inp(base, T1_FASTLINK + T1_OUTSTAT); /* first read */
  90
  91        /* write config */
  92        dummy = (base >> 4) & 0xff;
  93        for (i = 1; i <= 0xf; i++) t1outp(base, i, dummy);
  94        t1outp(base, HEMA_PAL_ID & 0xf, dummy);
  95        t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
  96        for (i = 1; i < 7; i++) t1outp(base, 0, cregs[i]);
  97        t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
  98        /* restore_flags(flags); */
  99
 100        mdelay(100);
 101        t1outp(base, T1_FASTLINK + T1_RESETLINK, 0);
 102        t1outp(base, T1_SLOWLINK + T1_RESETLINK, 0);
 103        mdelay(10);
 104        t1outp(base, T1_FASTLINK + T1_RESETLINK, 1);
 105        t1outp(base, T1_SLOWLINK + T1_RESETLINK, 1);
 106        mdelay(100);
 107        t1outp(base, T1_FASTLINK + T1_RESETLINK, 0);
 108        t1outp(base, T1_SLOWLINK + T1_RESETLINK, 0);
 109        mdelay(10);
 110        t1outp(base, T1_FASTLINK + T1_ANALYSE, 0);
 111        mdelay(5);
 112        t1outp(base, T1_SLOWLINK + T1_ANALYSE, 0);
 113
 114        if (t1inp(base, T1_FASTLINK + T1_OUTSTAT) != 0x1) /* tx empty */
 115                return 1;
 116        if (t1inp(base, T1_FASTLINK + T1_INSTAT) != 0x0) /* rx empty */
 117                return 2;
 118        if (t1inp(base, T1_FASTLINK + T1_IRQENABLE) != 0x0)
 119                return 3;
 120        if ((t1inp(base, T1_FASTLINK + T1_FIFOSTAT) & 0xf0) != 0x70)
 121                return 4;
 122        if ((t1inp(base, T1_FASTLINK + T1_IRQMASTER) & 0x0e) != 0)
 123                return 5;
 124        if ((t1inp(base, T1_FASTLINK + T1_IDENT) & 0x7d) != 1)
 125                return 6;
 126        if (t1inp(base, T1_SLOWLINK + T1_OUTSTAT) != 0x1) /* tx empty */
 127                return 7;
 128        if ((t1inp(base, T1_SLOWLINK + T1_IRQMASTER) & 0x0e) != 0)
 129                return 8;
 130        if ((t1inp(base, T1_SLOWLINK + T1_IDENT) & 0x7d) != 0)
 131                return 9;
 132        return 0;
 133}
 134
 135static irqreturn_t t1isa_interrupt(int interrupt, void *devptr)
 136{
 137        avmcard *card = devptr;
 138        avmctrl_info *cinfo = &card->ctrlinfo[0];
 139        struct capi_ctr *ctrl = &cinfo->capi_ctrl;
 140        unsigned char b1cmd;
 141        struct sk_buff *skb;
 142
 143        unsigned ApplId;
 144        unsigned MsgLen;
 145        unsigned DataB3Len;
 146        unsigned NCCI;
 147        unsigned WindowSize;
 148        unsigned long flags;
 149
 150        spin_lock_irqsave(&card->lock, flags);
 151
 152        while (b1_rx_full(card->port)) {
 153
 154                b1cmd = b1_get_byte(card->port);
 155
 156                switch (b1cmd) {
 157
 158                case RECEIVE_DATA_B3_IND:
 159
 160                        ApplId = (unsigned) b1_get_word(card->port);
 161                        MsgLen = t1_get_slice(card->port, card->msgbuf);
 162                        DataB3Len = t1_get_slice(card->port, card->databuf);
 163                        spin_unlock_irqrestore(&card->lock, flags);
 164
 165                        if (MsgLen < 30) { /* not CAPI 64Bit */
 166                                memset(card->msgbuf + MsgLen, 0, 30 - MsgLen);
 167                                MsgLen = 30;
 168                                CAPIMSG_SETLEN(card->msgbuf, 30);
 169                        }
 170                        if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) {
 171                                printk(KERN_ERR "%s: incoming packet dropped\n",
 172                                       card->name);
 173                        } else {
 174                                skb_put_data(skb, card->msgbuf, MsgLen);
 175                                skb_put_data(skb, card->databuf, DataB3Len);
 176                                capi_ctr_handle_message(ctrl, ApplId, skb);
 177                        }
 178                        break;
 179
 180                case RECEIVE_MESSAGE:
 181
 182                        ApplId = (unsigned) b1_get_word(card->port);
 183                        MsgLen = t1_get_slice(card->port, card->msgbuf);
 184                        if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
 185                                spin_unlock_irqrestore(&card->lock, flags);
 186                                printk(KERN_ERR "%s: incoming packet dropped\n",
 187                                       card->name);
 188                        } else {
 189                                skb_put_data(skb, card->msgbuf, MsgLen);
 190                                if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3)
 191                                        capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
 192                                                             CAPIMSG_NCCI(skb->data),
 193                                                             CAPIMSG_MSGID(skb->data));
 194                                spin_unlock_irqrestore(&card->lock, flags);
 195                                capi_ctr_handle_message(ctrl, ApplId, skb);
 196                        }
 197                        break;
 198
 199                case RECEIVE_NEW_NCCI:
 200
 201                        ApplId = b1_get_word(card->port);
 202                        NCCI = b1_get_word(card->port);
 203                        WindowSize = b1_get_word(card->port);
 204                        capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
 205                        spin_unlock_irqrestore(&card->lock, flags);
 206                        break;
 207
 208                case RECEIVE_FREE_NCCI:
 209
 210                        ApplId = b1_get_word(card->port);
 211                        NCCI = b1_get_word(card->port);
 212                        if (NCCI != 0xffffffff)
 213                                capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
 214                        spin_unlock_irqrestore(&card->lock, flags);
 215                        break;
 216
 217                case RECEIVE_START:
 218                        b1_put_byte(card->port, SEND_POLLACK);
 219                        spin_unlock_irqrestore(&card->lock, flags);
 220                        capi_ctr_resume_output(ctrl);
 221                        break;
 222
 223                case RECEIVE_STOP:
 224                        spin_unlock_irqrestore(&card->lock, flags);
 225                        capi_ctr_suspend_output(ctrl);
 226                        break;
 227
 228                case RECEIVE_INIT:
 229
 230                        cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
 231                        spin_unlock_irqrestore(&card->lock, flags);
 232                        b1_parse_version(cinfo);
 233                        printk(KERN_INFO "%s: %s-card (%s) now active\n",
 234                               card->name,
 235                               cinfo->version[VER_CARDTYPE],
 236                               cinfo->version[VER_DRIVER]);
 237                        capi_ctr_ready(ctrl);
 238                        break;
 239
 240                case RECEIVE_TASK_READY:
 241                        ApplId = (unsigned) b1_get_word(card->port);
 242                        MsgLen = t1_get_slice(card->port, card->msgbuf);
 243                        spin_unlock_irqrestore(&card->lock, flags);
 244                        card->msgbuf[MsgLen] = 0;
 245                        while (MsgLen > 0
 246                               && (card->msgbuf[MsgLen - 1] == '\n'
 247                                   || card->msgbuf[MsgLen - 1] == '\r')) {
 248                                card->msgbuf[MsgLen - 1] = 0;
 249                                MsgLen--;
 250                        }
 251                        printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
 252                               card->name, ApplId, card->msgbuf);
 253                        break;
 254
 255                case RECEIVE_DEBUGMSG:
 256                        MsgLen = t1_get_slice(card->port, card->msgbuf);
 257                        spin_unlock_irqrestore(&card->lock, flags);
 258                        card->msgbuf[MsgLen] = 0;
 259                        while (MsgLen > 0
 260                               && (card->msgbuf[MsgLen - 1] == '\n'
 261                                   || card->msgbuf[MsgLen - 1] == '\r')) {
 262                                card->msgbuf[MsgLen - 1] = 0;
 263                                MsgLen--;
 264                        }
 265                        printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
 266                        break;
 267
 268
 269                case 0xff:
 270                        spin_unlock_irqrestore(&card->lock, flags);
 271                        printk(KERN_ERR "%s: card reseted ?\n", card->name);
 272                        return IRQ_HANDLED;
 273                default:
 274                        spin_unlock_irqrestore(&card->lock, flags);
 275                        printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
 276                               card->name, b1cmd);
 277                        return IRQ_NONE;
 278                }
 279        }
 280        return IRQ_HANDLED;
 281}
 282
 283/* ------------------------------------------------------------- */
 284
 285static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
 286{
 287        avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 288        avmcard *card = cinfo->card;
 289        unsigned int port = card->port;
 290        unsigned long flags;
 291        int retval;
 292
 293        t1_disable_irq(port);
 294        b1_reset(port);
 295
 296        if ((retval = b1_load_t4file(card, &data->firmware))) {
 297                b1_reset(port);
 298                printk(KERN_ERR "%s: failed to load t4file!!\n",
 299                       card->name);
 300                return retval;
 301        }
 302
 303        if (data->configuration.len > 0 && data->configuration.data) {
 304                if ((retval = b1_load_config(card, &data->configuration))) {
 305                        b1_reset(port);
 306                        printk(KERN_ERR "%s: failed to load config!!\n",
 307                               card->name);
 308                        return retval;
 309                }
 310        }
 311
 312        if (!b1_loaded(card)) {
 313                printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
 314                return -EIO;
 315        }
 316
 317        spin_lock_irqsave(&card->lock, flags);
 318        b1_setinterrupt(port, card->irq, card->cardtype);
 319        b1_put_byte(port, SEND_INIT);
 320        b1_put_word(port, CAPI_MAXAPPL);
 321        b1_put_word(port, AVM_NCCI_PER_CHANNEL * 30);
 322        b1_put_word(port, ctrl->cnr - 1);
 323        spin_unlock_irqrestore(&card->lock, flags);
 324
 325        return 0;
 326}
 327
 328static void t1isa_reset_ctr(struct capi_ctr *ctrl)
 329{
 330        avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 331        avmcard *card = cinfo->card;
 332        unsigned int port = card->port;
 333        unsigned long flags;
 334
 335        t1_disable_irq(port);
 336        b1_reset(port);
 337        b1_reset(port);
 338
 339        memset(cinfo->version, 0, sizeof(cinfo->version));
 340        spin_lock_irqsave(&card->lock, flags);
 341        capilib_release(&cinfo->ncci_head);
 342        spin_unlock_irqrestore(&card->lock, flags);
 343        capi_ctr_down(ctrl);
 344}
 345
 346static 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
 369static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
 370static char *t1isa_procinfo(struct capi_ctr *ctrl);
 371
 372static 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.proc_show     = b1_proc_show;
 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
 448err_free_irq:
 449        free_irq(card->irq, card);
 450err_release_region:
 451        release_region(card->port, AVMB1_PORTLEN);
 452err_free:
 453        b1_free_card(card);
 454err:
 455        return retval;
 456}
 457
 458static 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        spin_lock_irqsave(&card->lock, flags);
 470        if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
 471                retval = capilib_data_b3_req(&cinfo->ncci_head,
 472                                             CAPIMSG_APPID(skb->data),
 473                                             CAPIMSG_NCCI(skb->data),
 474                                             CAPIMSG_MSGID(skb->data));
 475                if (retval != CAPI_NOERROR) {
 476                        spin_unlock_irqrestore(&card->lock, flags);
 477                        return retval;
 478                }
 479                dlen = CAPIMSG_DATALEN(skb->data);
 480
 481                b1_put_byte(port, SEND_DATA_B3_REQ);
 482                t1_put_slice(port, skb->data, len);
 483                t1_put_slice(port, skb->data + len, dlen);
 484        } else {
 485                b1_put_byte(port, SEND_MESSAGE);
 486                t1_put_slice(port, skb->data, len);
 487        }
 488        spin_unlock_irqrestore(&card->lock, flags);
 489        dev_kfree_skb_any(skb);
 490        return CAPI_NOERROR;
 491}
 492/* ------------------------------------------------------------- */
 493
 494static char *t1isa_procinfo(struct capi_ctr *ctrl)
 495{
 496        avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 497
 498        if (!cinfo)
 499                return "";
 500        sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
 501                cinfo->cardname[0] ? cinfo->cardname : "-",
 502                cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 503                cinfo->card ? cinfo->card->port : 0x0,
 504                cinfo->card ? cinfo->card->irq : 0,
 505                cinfo->card ? cinfo->card->cardnr : 0
 506                );
 507        return cinfo->infobuf;
 508}
 509
 510
 511/* ------------------------------------------------------------- */
 512
 513#define MAX_CARDS 4
 514static struct pci_dev isa_dev[MAX_CARDS];
 515static int io[MAX_CARDS];
 516static int irq[MAX_CARDS];
 517static int cardnr[MAX_CARDS];
 518
 519module_param_hw_array(io, int, ioport, NULL, 0);
 520module_param_hw_array(irq, int, irq, NULL, 0);
 521module_param_array(cardnr, int, NULL, 0);
 522MODULE_PARM_DESC(io, "I/O base address(es)");
 523MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
 524MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
 525
 526static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
 527{
 528        int i;
 529
 530        for (i = 0; i < MAX_CARDS; i++) {
 531                if (isa_dev[i].resource[0].start)
 532                        continue;
 533
 534                isa_dev[i].resource[0].start = data->port;
 535                isa_dev[i].irq = data->irq;
 536
 537                if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
 538                        return 0;
 539        }
 540        return -ENODEV;
 541}
 542
 543static struct capi_driver capi_driver_t1isa = {
 544        .name           = "t1isa",
 545        .revision       = "1.0",
 546        .add_card       = t1isa_add_card,
 547};
 548
 549static int __init t1isa_init(void)
 550{
 551        char rev[32];
 552        char *p;
 553        int i;
 554
 555        if ((p = strchr(revision, ':')) != NULL && p[1]) {
 556                strlcpy(rev, p + 2, 32);
 557                if ((p = strchr(rev, '$')) != NULL && p > rev)
 558                        *(p - 1) = 0;
 559        } else
 560                strcpy(rev, "1.0");
 561
 562        for (i = 0; i < MAX_CARDS; i++) {
 563                if (!io[i])
 564                        break;
 565
 566                isa_dev[i].resource[0].start = io[i];
 567                isa_dev[i].irq = irq[i];
 568
 569                if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
 570                        return -ENODEV;
 571        }
 572
 573        strlcpy(capi_driver_t1isa.revision, rev, 32);
 574        register_capi_driver(&capi_driver_t1isa);
 575        printk(KERN_INFO "t1isa: revision %s\n", rev);
 576
 577        return 0;
 578}
 579
 580static void __exit t1isa_exit(void)
 581{
 582        int i;
 583
 584        unregister_capi_driver(&capi_driver_t1isa);
 585        for (i = 0; i < MAX_CARDS; i++) {
 586                if (!io[i])
 587                        break;
 588
 589                t1isa_remove(&isa_dev[i]);
 590        }
 591}
 592
 593module_init(t1isa_init);
 594module_exit(t1isa_exit);
 595