drivers/isdn/eicon/eicon_isa.c

   1 /* $Id: eicon_isa.c,v 1.1.4.1 2001/11/20 14:19:35 kai Exp $
   2  *
   3  * ISDN low-level module for Eicon active ISDN-Cards.
   4  * Hardware-specific code for old ISA cards.
   5  *
   6  * Copyright 1998      by Fritz Elfert (fritz@isdn4linux.de)
   7  * Copyright 1998-2000 by Armin Schindler (mac@melware.de)
   8  * Copyright 1999,2000 Cytronics & Melware (info@melware.de)
   9  *
  10  * This software may be used and distributed according to the terms
  11  * of the GNU General Public License, incorporated herein by reference.
  12  *
  13  */
  14
  15 #include <linux/config.h>
  16 #include "eicon.h"
  17 #include "eicon_isa.h"
  18
  19 #define check_shmem   check_region
  20 #define release_shmem release_region
  21 #define request_shmem request_region
  22
  23 char *eicon_isa_revision = "$Revision: 1.1.4.1 $";
  24
  25 #undef EICON_MCA_DEBUG
  26
  27 #ifdef CONFIG_ISDN_DRV_EICON_ISA
  28
  29 /* Mask for detecting invalid IRQ parameter */
  30 static int eicon_isa_valid_irq[] = {
  31         0x1c1c, /* 2, 3, 4, 10, 11, 12 (S)*/
  32         0x1c1c, /* 2, 3, 4, 10, 11, 12 (SX) */
  33         0x1cbc, /* 2, 3, 4, 5, 7, 10, 11, 12 (SCOM) */
  34         0x1cbc, /* 2, 3, 4, 5, 6, 10, 11, 12 (Quadro) */
  35         0x1cbc  /* 2, 3, 4, 5, 7, 10, 11, 12 (S2M) */
  36 };
  37
  38 static void
  39 eicon_isa_release_shmem(eicon_isa_card *card) {
  40         if (card->mvalid) {
  41                 iounmap(card->shmem);
  42                 release_mem_region(card->physmem, card->ramsize);
  43         }
  44         card->mvalid = 0;
  45 }
  46
  47 static void
  48 eicon_isa_release_irq(eicon_isa_card *card) {
  49         if (!card->master)
  50                 return;
  51         if (card->ivalid)
  52                 free_irq(card->irq, card);
  53         card->ivalid = 0;
  54 }
  55
  56 void
  57 eicon_isa_release(eicon_isa_card *card) {
  58         eicon_isa_release_irq(card);
  59         eicon_isa_release_shmem(card);
  60 }
  61
  62 void
  63 eicon_isa_printpar(eicon_isa_card *card) {
  64         switch (card->type) {
  65                 case EICON_CTYPE_S:
  66                 case EICON_CTYPE_SX:
  67                 case EICON_CTYPE_SCOM:
  68                 case EICON_CTYPE_QUADRO:
  69                 case EICON_CTYPE_S2M:
  70                         printk(KERN_INFO "Eicon %s at 0x%lx, irq %d.\n",
  71                                eicon_ctype_name[card->type],
  72                                card->physmem,
  73                                card->irq);
  74         }
  75 }
  76
  77 int
  78 eicon_isa_find_card(int Mem, int Irq, char * Id)
  79 {
  80         int primary = 1;
  81         unsigned long amem;
  82
  83         if (!strlen(Id))
  84                 return -1;
  85
  86         if (Mem == -1)
  87                 return -1;
  88
  89         /* Check for valid membase address */
  90         if ((Mem < 0x0c0000) ||
  91             (Mem > 0x0fc000) ||
  92             (Mem & 0xfff)) {
  93                 printk(KERN_WARNING "eicon_isa: illegal membase 0x%x for %s\n",
  94                          Mem, Id);
  95                 return -1;
  96         }
  97         if (check_mem_region(Mem, RAMSIZE)) {
  98                 printk(KERN_WARNING "eicon_isa_boot: memory at 0x%x already in use.\n", Mem);
  99                 return -1;
 100         }
 101
 102         amem = (unsigned long) ioremap(Mem, RAMSIZE);
 103         writew(0x55aa, amem + 0x402);
 104         if (readw(amem + 0x402) != 0x55aa) primary = 0;
 105         writew(0, amem + 0x402);
 106         if (readw(amem + 0x402) != 0) primary = 0;
 107
 108         printk(KERN_INFO "Eicon: Driver-ID: %s\n", Id);
 109         if (primary) {
 110                 printk(KERN_INFO "Eicon: assuming pri card at 0x%x\n", Mem);
 111                 writeb(0, amem + 0x3ffe);
 112                 iounmap((unsigned char *)amem);
 113                 return EICON_CTYPE_ISAPRI;
 114         } else {
 115                 printk(KERN_INFO "Eicon: assuming bri card at 0x%x\n", Mem);
 116                 writeb(0, amem + 0x400);
 117                 iounmap((unsigned char *)amem);
 118                 return EICON_CTYPE_ISABRI;
 119         }
 120         return -1;
 121 }
 122
 123 int
 124 eicon_isa_bootload(eicon_isa_card *card, eicon_isa_codebuf *cb) {
 125         int     tmp;
 126         int               timeout;
 127         eicon_isa_codebuf cbuf;
 128         unsigned char     *code;
 129         eicon_isa_boot    *boot;
 130
 131         if (copy_from_user(&cbuf, cb, sizeof(eicon_isa_codebuf)))
 132                 return -EFAULT;
 133
 134         /* Allocate code-buffer and copy code from userspace */
 135         if (cbuf.bootstrap_len > 1024) {
 136                 printk(KERN_WARNING "eicon_isa_boot: Invalid startup-code size %ld\n",
 137                        cbuf.bootstrap_len);
 138                 return -EINVAL;
 139         }
 140         if (!(code = kmalloc(cbuf.bootstrap_len, GFP_KERNEL))) {
 141                 printk(KERN_WARNING "eicon_isa_boot: Couldn't allocate code buffer\n");
 142                 return -ENOMEM;
 143         }
 144         if (copy_from_user(code, &cb->code, cbuf.bootstrap_len)) {
 145                 kfree(code);
 146                 return -EFAULT;
 147         }
 148
 149         if (card->type == EICON_CTYPE_ISAPRI)
 150                 card->ramsize  = RAMSIZE_P;
 151         else
 152                 card->ramsize  = RAMSIZE;
 153
 154         if (check_mem_region(card->physmem, card->ramsize)) {
 155                 printk(KERN_WARNING "eicon_isa_boot: memory at 0x%lx already in use.\n",
 156                         card->physmem);
 157                 kfree(code);
 158                 return -EBUSY;
 159         }
 160         request_mem_region(card->physmem, card->ramsize, "Eicon ISA ISDN");
 161         card->shmem = (eicon_isa_shmem *) ioremap(card->physmem, card->ramsize);
 162 #ifdef EICON_MCA_DEBUG
 163         printk(KERN_INFO "eicon_isa_boot: card->ramsize = %d.\n", card->ramsize);
 164 #endif
 165         card->mvalid = 1;
 166
 167         switch(card->type) {
 168                 case EICON_CTYPE_S:
 169                 case EICON_CTYPE_SX:
 170                 case EICON_CTYPE_SCOM:
 171                 case EICON_CTYPE_QUADRO:
 172                 case EICON_CTYPE_ISABRI:
 173                         card->intack   = (__u8 *)card->shmem + INTACK;
 174                         card->startcpu = (__u8 *)card->shmem + STARTCPU;
 175                         card->stopcpu  = (__u8 *)card->shmem + STOPCPU;
 176                         break;
 177                 case EICON_CTYPE_S2M:
 178                 case EICON_CTYPE_ISAPRI:
 179                         card->intack   = (__u8 *)card->shmem + INTACK_P;
 180                         card->startcpu = (__u8 *)card->shmem + STARTCPU_P;
 181                         card->stopcpu  = (__u8 *)card->shmem + STOPCPU_P;
 182                         break;
 183                 default:
 184                         printk(KERN_WARNING "eicon_isa_boot: Invalid card type %d\n", card->type);
 185                         eicon_isa_release_shmem(card);
 186                         kfree(code);
 187                         return -EINVAL;
 188         }
 189
 190         /* clear any pending irq's */
 191         readb(card->intack);
 192 #ifdef CONFIG_MCA
 193         if (MCA_bus) {
 194                 if (card->type == EICON_CTYPE_SCOM) {
 195                         outb_p(0,card->io+1);
 196                 }
 197                 else {
 198                         printk(KERN_WARNING "eicon_isa_boot: Card type not supported yet.\n");
 199                         eicon_isa_release_shmem(card);
 200                         return -EINVAL;
 201                 };
 202
 203 #ifdef EICON_MCA_DEBUG
 204         printk(KERN_INFO "eicon_isa_boot: card->io      = %x.\n", card->io);
 205         printk(KERN_INFO "eicon_isa_boot: card->irq     = %d.\n", (int)card->irq);
 206 #endif
 207         }
 208 #else
 209         /* set reset-line active */
 210         writeb(0, card->stopcpu);
 211 #endif  /* CONFIG_MCA */
 212         /* clear irq-requests */
 213         writeb(0, card->intack);
 214         readb(card->intack);
 215
 216         /* Copy code into card */
 217         memcpy_toio(&card->shmem->c, code, cbuf.bootstrap_len);
 218
 219         /* Check for properly loaded code */
 220         if (!check_signature((unsigned long)&card->shmem->c, code, 1020)) {
 221                 printk(KERN_WARNING "eicon_isa_boot: Could not load startup-code\n");
 222                 eicon_isa_release_shmem(card);
 223                 kfree(code);
 224                 return -EIO;
 225         }
 226         /* if 16k-ramsize, duplicate the reset-jump-code */
 227         if (card->ramsize == RAMSIZE_P)
 228                 memcpy_toio((__u8 *)card->shmem + 0x3ff0, &code[0x3f0], 12);
 229
 230         kfree(code);
 231         boot = &card->shmem->boot;
 232
 233         /* Delay 0.2 sec. */
 234         SLEEP(HZ / 5);
 235
 236         /* Start CPU */
 237         writeb(cbuf.boot_opt, &boot->ctrl);
 238 #ifdef CONFIG_MCA
 239         if (MCA_bus) {
 240                 outb_p(0, card->io);
 241         }
 242 #else
 243         writeb(0, card->startcpu);
 244 #endif /* CONFIG_MCA */
 245
 246         /* Delay 0.2 sec. */
 247         SLEEP(HZ / 5);
 248
 249         timeout = jiffies + (HZ * 22);
 250         while (time_before(jiffies, timeout)) {
 251                 if (readb(&boot->ctrl) == 0)
 252                         break;
 253                 SLEEP(10);
 254         }
 255         if (readb(&boot->ctrl) != 0) {
 256                 printk(KERN_WARNING "eicon_isa_boot: CPU test failed.\n");
 257 #ifdef EICON_MCA_DEBUG
 258                 printk(KERN_INFO "eicon_isa_boot: &boot->ctrl = %d.\n",
 259                         readb(&boot->ctrl));
 260 #endif
 261                 eicon_isa_release_shmem(card);
 262                 return -EIO;
 263         }
 264
 265         /* Check for memory-test errors */
 266         if (readw(&boot->ebit)) {
 267                 printk(KERN_WARNING "eicon_isa_boot: memory test failed (bit 0x%04x at 0x%08x)\n",
 268                        readw(&boot->ebit), readl(&boot->eloc));
 269                 eicon_isa_release_shmem(card);
 270                 return -EIO;
 271         }
 272
 273         /* Check card type and memory size */
 274         tmp = readb(&boot->card);
 275         if ((tmp < 0) || (tmp > 4)) {
 276                 printk(KERN_WARNING "eicon_isa_boot: Type detect failed\n");
 277                 eicon_isa_release_shmem(card);
 278                 return -EIO;
 279         }
 280         card->type = tmp;
 281         ((eicon_card *)card->card)->type = tmp;
 282
 283         tmp = readb(&boot->msize);
 284         if (tmp != 8 && tmp != 16 && tmp != 24 &&
 285             tmp != 32 && tmp != 48 && tmp != 60) {
 286                 printk(KERN_WARNING "eicon_isa_boot: invalid memsize\n");
 287                 eicon_isa_release_shmem(card);
 288                 return -EIO;
 289         }
 290         printk(KERN_INFO "%s: startup-code loaded\n", eicon_ctype_name[card->type]);
 291         if ((card->type == EICON_CTYPE_QUADRO) && (card->master)) {
 292                 tmp = eicon_addcard(card->type, card->physmem, card->irq,
 293                                 ((eicon_card *)card->card)->regname, 0);
 294                 printk(KERN_INFO "Eicon: %d adapters added\n", tmp);
 295         }
 296         return 0;
 297 }
 298
 299 int
 300 eicon_isa_load(eicon_isa_card *card, eicon_isa_codebuf *cb) {
 301         eicon_isa_boot    *boot;
 302         int               tmp;
 303         int               timeout;
 304         int               j;
 305         eicon_isa_codebuf cbuf;
 306         unsigned char     *code;
 307         unsigned char     *p;
 308
 309         if (copy_from_user(&cbuf, cb, sizeof(eicon_isa_codebuf)))
 310                 return -EFAULT;
 311
 312         if (!(code = kmalloc(cbuf.firmware_len, GFP_KERNEL))) {
 313                 printk(KERN_WARNING "eicon_isa_load: Couldn't allocate code buffer\n");
 314                 return -ENOMEM;
 315         }
 316
 317         if (copy_from_user(code, &cb->code, cbuf.firmware_len)) {
 318                 kfree(code);
 319                 return -EFAULT;
 320         }
 321
 322         boot = &card->shmem->boot;
 323
 324         if ((!card->ivalid) && card->master) {
 325                 card->irqprobe = 1;
 326                 /* Check for valid IRQ */
 327                 if ((card->irq < 0) || (card->irq > 15) ||
 328                     (!((1 << card->irq) & eicon_isa_valid_irq[card->type & 0x0f]))) {
 329                         printk(KERN_WARNING "eicon_isa_load: illegal irq: %d\n", card->irq);
 330                         eicon_isa_release_shmem(card);
 331                         kfree(code);
 332                         return -EINVAL;
 333                 }
 334                 /* Register irq */
 335                 if (!request_irq(card->irq, &eicon_irq, 0, "Eicon ISA ISDN", card))
 336                         card->ivalid = 1;
 337                 else {
 338                         printk(KERN_WARNING "eicon_isa_load: irq %d already in use.\n",
 339                                card->irq);
 340                         eicon_isa_release_shmem(card);
 341                         kfree(code);
 342                         return -EBUSY;
 343                 }
 344         }
 345
 346         tmp = readb(&boot->msize);
 347         if (tmp != 8 && tmp != 16 && tmp != 24 &&
 348             tmp != 32 && tmp != 48 && tmp != 60) {
 349                 printk(KERN_WARNING "eicon_isa_load: invalid memsize\n");
 350                 eicon_isa_release_shmem(card);
 351                 return -EIO;
 352         }
 353
 354         eicon_isa_printpar(card);
 355
 356         /* Download firmware */
 357         printk(KERN_INFO "%s %dkB, loading firmware ...\n",
 358                eicon_ctype_name[card->type],
 359                tmp * 16);
 360         tmp = cbuf.firmware_len >> 8;
 361         p = code;
 362         while (tmp--) {
 363                 memcpy_toio(&boot->b, p, 256);
 364                 writeb(1, &boot->ctrl);
 365                 timeout = jiffies + HZ / 10;
 366                 while (time_before(jiffies, timeout)) {
 367                         if (readb(&boot->ctrl) == 0)
 368                                 break;
 369                         SLEEP(2);
 370                 }
 371                 if (readb(&boot->ctrl)) {
 372                         printk(KERN_WARNING "eicon_isa_load: download timeout at 0x%x\n", p-code);
 373                         eicon_isa_release(card);
 374                         kfree(code);
 375                         return -EIO;
 376                 }
 377                 p += 256;
 378         }
 379         kfree(code);
 380
 381         /* Initialize firmware parameters */
 382         memcpy_toio(&card->shmem->c[8], &cbuf.tei, 14);
 383         memcpy_toio(&card->shmem->c[32], &cbuf.oad, 96);
 384         memcpy_toio(&card->shmem->c[128], &cbuf.oad, 96);
 385
 386         /* Start firmware, wait for signature */
 387         writeb(2, &boot->ctrl);
 388         timeout = jiffies + (5*HZ);
 389         while (time_before(jiffies, timeout)) {
 390                 if (readw(&boot->signature) == 0x4447)
 391                         break;
 392                 SLEEP(2);
 393         }
 394         if (readw(&boot->signature) != 0x4447) {
 395                 printk(KERN_WARNING "eicon_isa_load: firmware selftest failed %04x\n",
 396                        readw(&boot->signature));
 397                 eicon_isa_release(card);
 398                 return -EIO;
 399         }
 400
 401         card->channels = readb(&card->shmem->c[0x3f6]);
 402
 403         /* clear irq-requests, reset irq-count */
 404         readb(card->intack);
 405         writeb(0, card->intack);
 406
 407         if (card->master) {
 408                 card->irqprobe = 1;
 409                 /* Trigger an interrupt and check if it is delivered */
 410                 tmp = readb(&card->shmem->com.ReadyInt);
 411                 tmp ++;
 412                 writeb(tmp, &card->shmem->com.ReadyInt);
 413                 timeout = jiffies + HZ / 5;
 414                 while (time_before(jiffies, timeout)) {
 415                         if (card->irqprobe > 1)
 416                                 break;
 417                         SLEEP(2);
 418                 }
 419                 if (card->irqprobe == 1) {
 420                         printk(KERN_WARNING "eicon_isa_load: IRQ # %d test failed\n", card->irq);
 421                         eicon_isa_release(card);
 422                         return -EIO;
 423                 }
 424         }
 425 #ifdef EICON_MCA_DEBUG
 426         printk(KERN_INFO "eicon_isa_load: IRQ # %d test succeeded.\n", card->irq);
 427 #endif
 428
 429         writeb(card->irq, &card->shmem->com.Int);
 430
 431         /* initializing some variables */
 432         ((eicon_card *)card->card)->ReadyInt = 0;
 433         ((eicon_card *)card->card)->ref_in  = 1;
 434         ((eicon_card *)card->card)->ref_out = 1;
 435         for(j=0; j<256; j++) ((eicon_card *)card->card)->IdTable[j] = NULL;
 436         for(j=0; j< (card->channels + 1); j++) {
 437                 ((eicon_card *)card->card)->bch[j].e.busy = 0;
 438                 ((eicon_card *)card->card)->bch[j].e.D3Id = 0;
 439                 ((eicon_card *)card->card)->bch[j].e.B2Id = 0;
 440                 ((eicon_card *)card->card)->bch[j].e.ref = 0;
 441                 ((eicon_card *)card->card)->bch[j].e.Req = 0;
 442                 ((eicon_card *)card->card)->bch[j].e.complete = 1;
 443                 ((eicon_card *)card->card)->bch[j].fsm_state = EICON_STATE_NULL;
 444         }
 445
 446         printk(KERN_INFO "Eicon: Supported channels: %d\n", card->channels);
 447         printk(KERN_INFO "%s successfully started\n", eicon_ctype_name[card->type]);
 448
 449         /* Enable normal IRQ processing */
 450         card->irqprobe = 0;
 451         return 0;
 452 }
 453
 454 #endif /* CONFIG_ISDN_DRV_EICON_ISA */