SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/pnp/resource.c

   1 /*
   2  * resource.c - Contains functions for registering and analyzing resource information
   3  *
   4  * based on isapnp.c resource management (c) Jaroslav Kysela <perex@perex.cz>
   5  * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/errno.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/kernel.h>
  12 #include <asm/io.h>
  13 #include <asm/dma.h>
  14 #include <asm/irq.h>
  15 #include <linux/pci.h>
  16 #include <linux/ioport.h>
  17 #include <linux/init.h>
  18
  19 #include <linux/pnp.h>
  20 #include "base.h"
  21
  22 static int pnp_reserve_irq[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some IRQ */
  23 static int pnp_reserve_dma[8] = {[0 ... 7] = -1 };      /* reserve (don't use) some DMA */
  24 static int pnp_reserve_io[16] = {[0 ... 15] = -1 };     /* reserve (don't use) some I/O region */
  25 static int pnp_reserve_mem[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some memory region */
  26
  27 /*
  28  * option registration
  29  */
  30
  31 struct pnp_option *pnp_build_option(int priority)
  32 {
  33         struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option));
  34
  35         if (!option)
  36                 return NULL;
  37
  38         option->priority = priority & 0xff;
  39         /* make sure the priority is valid */
  40         if (option->priority > PNP_RES_PRIORITY_FUNCTIONAL)
  41                 option->priority = PNP_RES_PRIORITY_INVALID;
  42
  43         return option;
  44 }
  45
  46 struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev)
  47 {
  48         struct pnp_option *option;
  49
  50         option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED);
  51
  52         /* this should never happen but if it does we'll try to continue */
  53         if (dev->independent)
  54                 dev_err(&dev->dev, "independent resource already registered\n");
  55         dev->independent = option;
  56
  57         dev_dbg(&dev->dev, "new independent option\n");
  58         return option;
  59 }
  60
  61 struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
  62                                                  int priority)
  63 {
  64         struct pnp_option *option;
  65
  66         option = pnp_build_option(priority);
  67
  68         if (dev->dependent) {
  69                 struct pnp_option *parent = dev->dependent;
  70                 while (parent->next)
  71                         parent = parent->next;
  72                 parent->next = option;
  73         } else
  74                 dev->dependent = option;
  75
  76         dev_dbg(&dev->dev, "new dependent option (priority %#x)\n", priority);
  77         return option;
  78 }
  79
  80 int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option,
  81                               pnp_irq_mask_t *map, unsigned char flags)
  82 {
  83         struct pnp_irq *data, *ptr;
  84 #ifdef DEBUG
  85         char buf[PNP_IRQ_NR];   /* hex-encoded, so this is overkill but safe */
  86 #endif
  87
  88         data = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
  89         if (!data)
  90                 return -ENOMEM;
  91
  92         data->map = *map;
  93         data->flags = flags;
  94
  95         ptr = option->irq;
  96         while (ptr && ptr->next)
  97                 ptr = ptr->next;
  98         if (ptr)
  99                 ptr->next = data;
 100         else
 101                 option->irq = data;
 102
 103 #ifdef CONFIG_PCI
 104         {
 105                 int i;
 106
 107                 for (i = 0; i < 16; i++)
 108                         if (test_bit(i, data->map.bits))
 109                                 pcibios_penalize_isa_irq(i, 0);
 110         }
 111 #endif
 112
 113 #ifdef DEBUG
 114         bitmap_scnprintf(buf, sizeof(buf), data->map.bits, PNP_IRQ_NR);
 115         dev_dbg(&dev->dev, "  irq bitmask %s flags %#x\n", buf,
 116                 data->flags);
 117 #endif
 118         return 0;
 119 }
 120
 121 int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option,
 122                               unsigned char map, unsigned char flags)
 123 {
 124         struct pnp_dma *data, *ptr;
 125
 126         data = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 127         if (!data)
 128                 return -ENOMEM;
 129
 130         data->map = map;
 131         data->flags = flags;
 132
 133         ptr = option->dma;
 134         while (ptr && ptr->next)
 135                 ptr = ptr->next;
 136         if (ptr)
 137                 ptr->next = data;
 138         else
 139                 option->dma = data;
 140
 141         dev_dbg(&dev->dev, "  dma bitmask %#x flags %#x\n", data->map,
 142                 data->flags);
 143         return 0;
 144 }
 145
 146 int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option,
 147                                resource_size_t min, resource_size_t max,
 148                                resource_size_t align, resource_size_t size,
 149                                unsigned char flags)
 150 {
 151         struct pnp_port *data, *ptr;
 152
 153         data = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 154         if (!data)
 155                 return -ENOMEM;
 156
 157         data->min = min;
 158         data->max = max;
 159         data->align = align;
 160         data->size = size;
 161         data->flags = flags;
 162
 163         ptr = option->port;
 164         while (ptr && ptr->next)
 165                 ptr = ptr->next;
 166         if (ptr)
 167                 ptr->next = data;
 168         else
 169                 option->port = data;
 170
 171         dev_dbg(&dev->dev, "  io  "
 172                 "min %#llx max %#llx align %lld size %lld flags %#x\n",
 173                 (unsigned long long) data->min,
 174                 (unsigned long long) data->max,
 175                 (unsigned long long) data->align,
 176                 (unsigned long long) data->size, data->flags);
 177         return 0;
 178 }
 179
 180 int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option,
 181                               resource_size_t min, resource_size_t max,
 182                               resource_size_t align, resource_size_t size,
 183                               unsigned char flags)
 184 {
 185         struct pnp_mem *data, *ptr;
 186
 187         data = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 188         if (!data)
 189                 return -ENOMEM;
 190
 191         data->min = min;
 192         data->max = max;
 193         data->align = align;
 194         data->size = size;
 195         data->flags = flags;
 196
 197         ptr = option->mem;
 198         while (ptr && ptr->next)
 199                 ptr = ptr->next;
 200         if (ptr)
 201                 ptr->next = data;
 202         else
 203                 option->mem = data;
 204
 205         dev_dbg(&dev->dev, "  mem "
 206                 "min %#llx max %#llx align %lld size %lld flags %#x\n",
 207                 (unsigned long long) data->min,
 208                 (unsigned long long) data->max,
 209                 (unsigned long long) data->align,
 210                 (unsigned long long) data->size, data->flags);
 211         return 0;
 212 }
 213
 214 static void pnp_free_port(struct pnp_port *port)
 215 {
 216         struct pnp_port *next;
 217
 218         while (port) {
 219                 next = port->next;
 220                 kfree(port);
 221                 port = next;
 222         }
 223 }
 224
 225 static void pnp_free_irq(struct pnp_irq *irq)
 226 {
 227         struct pnp_irq *next;
 228
 229         while (irq) {
 230                 next = irq->next;
 231                 kfree(irq);
 232                 irq = next;
 233         }
 234 }
 235
 236 static void pnp_free_dma(struct pnp_dma *dma)
 237 {
 238         struct pnp_dma *next;
 239
 240         while (dma) {
 241                 next = dma->next;
 242                 kfree(dma);
 243                 dma = next;
 244         }
 245 }
 246
 247 static void pnp_free_mem(struct pnp_mem *mem)
 248 {
 249         struct pnp_mem *next;
 250
 251         while (mem) {
 252                 next = mem->next;
 253                 kfree(mem);
 254                 mem = next;
 255         }
 256 }
 257
 258 void pnp_free_option(struct pnp_option *option)
 259 {
 260         struct pnp_option *next;
 261
 262         while (option) {
 263                 next = option->next;
 264                 pnp_free_port(option->port);
 265                 pnp_free_irq(option->irq);
 266                 pnp_free_dma(option->dma);
 267                 pnp_free_mem(option->mem);
 268                 kfree(option);
 269                 option = next;
 270         }
 271 }
 272
 273 /*
 274  * resource validity checking
 275  */
 276
 277 #define length(start, end) (*(end) - *(start) + 1)
 278
 279 /* Two ranges conflict if one doesn't end before the other starts */
 280 #define ranged_conflict(starta, enda, startb, endb) \
 281         !((*(enda) < *(startb)) || (*(endb) < *(starta)))
 282
 283 #define cannot_compare(flags) \
 284 ((flags) & IORESOURCE_DISABLED)
 285
 286 int pnp_check_port(struct pnp_dev *dev, struct resource *res)
 287 {
 288         int i;
 289         struct pnp_dev *tdev;
 290         struct resource *tres;
 291         resource_size_t *port, *end, *tport, *tend;
 292
 293         port = &res->start;
 294         end = &res->end;
 295
 296         /* if the resource doesn't exist, don't complain about it */
 297         if (cannot_compare(res->flags))
 298                 return 1;
 299
 300         /* check if the resource is already in use, skip if the
 301          * device is active because it itself may be in use */
 302         if (!dev->active) {
 303                 if (__check_region(&ioport_resource, *port, length(port, end)))
 304                         return 0;
 305         }
 306
 307         /* check if the resource is reserved */
 308         for (i = 0; i < 8; i++) {
 309                 int rport = pnp_reserve_io[i << 1];
 310                 int rend = pnp_reserve_io[(i << 1) + 1] + rport - 1;
 311                 if (ranged_conflict(port, end, &rport, &rend))
 312                         return 0;
 313         }
 314
 315         /* check for internal conflicts */
 316         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
 317                 if (tres != res && tres->flags & IORESOURCE_IO) {
 318                         tport = &tres->start;
 319                         tend = &tres->end;
 320                         if (ranged_conflict(port, end, tport, tend))
 321                                 return 0;
 322                 }
 323         }
 324
 325         /* check for conflicts with other pnp devices */
 326         pnp_for_each_dev(tdev) {
 327                 if (tdev == dev)
 328                         continue;
 329                 for (i = 0;
 330                      (tres = pnp_get_resource(tdev, IORESOURCE_IO, i));
 331                      i++) {
 332                         if (tres->flags & IORESOURCE_IO) {
 333                                 if (cannot_compare(tres->flags))
 334                                         continue;
 335                                 tport = &tres->start;
 336                                 tend = &tres->end;
 337                                 if (ranged_conflict(port, end, tport, tend))
 338                                         return 0;
 339                         }
 340                 }
 341         }
 342
 343         return 1;
 344 }
 345
 346 int pnp_check_mem(struct pnp_dev *dev, struct resource *res)
 347 {
 348         int i;
 349         struct pnp_dev *tdev;
 350         struct resource *tres;
 351         resource_size_t *addr, *end, *taddr, *tend;
 352
 353         addr = &res->start;
 354         end = &res->end;
 355
 356         /* if the resource doesn't exist, don't complain about it */
 357         if (cannot_compare(res->flags))
 358                 return 1;
 359
 360         /* check if the resource is already in use, skip if the
 361          * device is active because it itself may be in use */
 362         if (!dev->active) {
 363                 if (check_mem_region(*addr, length(addr, end)))
 364                         return 0;
 365         }
 366
 367         /* check if the resource is reserved */
 368         for (i = 0; i < 8; i++) {
 369                 int raddr = pnp_reserve_mem[i << 1];
 370                 int rend = pnp_reserve_mem[(i << 1) + 1] + raddr - 1;
 371                 if (ranged_conflict(addr, end, &raddr, &rend))
 372                         return 0;
 373         }
 374
 375         /* check for internal conflicts */
 376         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
 377                 if (tres != res && tres->flags & IORESOURCE_MEM) {
 378                         taddr = &tres->start;
 379                         tend = &tres->end;
 380                         if (ranged_conflict(addr, end, taddr, tend))
 381                                 return 0;
 382                 }
 383         }
 384
 385         /* check for conflicts with other pnp devices */
 386         pnp_for_each_dev(tdev) {
 387                 if (tdev == dev)
 388                         continue;
 389                 for (i = 0;
 390                      (tres = pnp_get_resource(tdev, IORESOURCE_MEM, i));
 391                      i++) {
 392                         if (tres->flags & IORESOURCE_MEM) {
 393                                 if (cannot_compare(tres->flags))
 394                                         continue;
 395                                 taddr = &tres->start;
 396                                 tend = &tres->end;
 397                                 if (ranged_conflict(addr, end, taddr, tend))
 398                                         return 0;
 399                         }
 400                 }
 401         }
 402
 403         return 1;
 404 }
 405
 406 static irqreturn_t pnp_test_handler(int irq, void *dev_id)
 407 {
 408         return IRQ_HANDLED;
 409 }
 410
 411 int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
 412 {
 413         int i;
 414         struct pnp_dev *tdev;
 415         struct resource *tres;
 416         resource_size_t *irq;
 417
 418         irq = &res->start;
 419
 420         /* if the resource doesn't exist, don't complain about it */
 421         if (cannot_compare(res->flags))
 422                 return 1;
 423
 424         /* check if the resource is valid */
 425         if (*irq < 0 || *irq > 15)
 426                 return 0;
 427
 428         /* check if the resource is reserved */
 429         for (i = 0; i < 16; i++) {
 430                 if (pnp_reserve_irq[i] == *irq)
 431                         return 0;
 432         }
 433
 434         /* check for internal conflicts */
 435         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IRQ, i)); i++) {
 436                 if (tres != res && tres->flags & IORESOURCE_IRQ) {
 437                         if (tres->start == *irq)
 438                                 return 0;
 439                 }
 440         }
 441
 442 #ifdef CONFIG_PCI
 443         /* check if the resource is being used by a pci device */
 444         {
 445                 struct pci_dev *pci = NULL;
 446                 for_each_pci_dev(pci) {
 447                         if (pci->irq == *irq) {
 448                                 pci_dev_put(pci);
 449                                 return 0;
 450                         }
 451                 }
 452         }
 453 #endif
 454
 455         /* check if the resource is already in use, skip if the
 456          * device is active because it itself may be in use */
 457         if (!dev->active) {
 458                 if (request_irq(*irq, pnp_test_handler,
 459                                 IRQF_DISABLED | IRQF_PROBE_SHARED, "pnp", NULL))
 460                         return 0;
 461                 free_irq(*irq, NULL);
 462         }
 463
 464         /* check for conflicts with other pnp devices */
 465         pnp_for_each_dev(tdev) {
 466                 if (tdev == dev)
 467                         continue;
 468                 for (i = 0;
 469                      (tres = pnp_get_resource(tdev, IORESOURCE_IRQ, i));
 470                      i++) {
 471                         if (tres->flags & IORESOURCE_IRQ) {
 472                                 if (cannot_compare(tres->flags))
 473                                         continue;
 474                                 if (tres->start == *irq)
 475                                         return 0;
 476                         }
 477                 }
 478         }
 479
 480         return 1;
 481 }
 482
 483 int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
 484 {
 485 #ifndef CONFIG_IA64
 486         int i;
 487         struct pnp_dev *tdev;
 488         struct resource *tres;
 489         resource_size_t *dma;
 490
 491         dma = &res->start;
 492
 493         /* if the resource doesn't exist, don't complain about it */
 494         if (cannot_compare(res->flags))
 495                 return 1;
 496
 497         /* check if the resource is valid */
 498         if (*dma < 0 || *dma == 4 || *dma > 7)
 499                 return 0;
 500
 501         /* check if the resource is reserved */
 502         for (i = 0; i < 8; i++) {
 503                 if (pnp_reserve_dma[i] == *dma)
 504                         return 0;
 505         }
 506
 507         /* check for internal conflicts */
 508         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_DMA, i)); i++) {
 509                 if (tres != res && tres->flags & IORESOURCE_DMA) {
 510                         if (tres->start == *dma)
 511                                 return 0;
 512                 }
 513         }
 514
 515         /* check if the resource is already in use, skip if the
 516          * device is active because it itself may be in use */
 517         if (!dev->active) {
 518                 if (request_dma(*dma, "pnp"))
 519                         return 0;
 520                 free_dma(*dma);
 521         }
 522
 523         /* check for conflicts with other pnp devices */
 524         pnp_for_each_dev(tdev) {
 525                 if (tdev == dev)
 526                         continue;
 527                 for (i = 0;
 528                      (tres = pnp_get_resource(tdev, IORESOURCE_DMA, i));
 529                      i++) {
 530                         if (tres->flags & IORESOURCE_DMA) {
 531                                 if (cannot_compare(tres->flags))
 532                                         continue;
 533                                 if (tres->start == *dma)
 534                                         return 0;
 535                         }
 536                 }
 537         }
 538
 539         return 1;
 540 #else
 541         /* IA64 does not have legacy DMA */
 542         return 0;
 543 #endif
 544 }
 545
 546 int pnp_resource_type(struct resource *res)
 547 {
 548         return res->flags & (IORESOURCE_IO  | IORESOURCE_MEM |
 549                              IORESOURCE_IRQ | IORESOURCE_DMA);
 550 }
 551
 552 struct resource *pnp_get_resource(struct pnp_dev *dev,
 553                                   unsigned int type, unsigned int num)
 554 {
 555         struct pnp_resource *pnp_res;
 556         struct resource *res;
 557
 558         list_for_each_entry(pnp_res, &dev->resources, list) {
 559                 res = &pnp_res->res;
 560                 if (pnp_resource_type(res) == type && num-- == 0)
 561                         return res;
 562         }
 563         return NULL;
 564 }
 565 EXPORT_SYMBOL(pnp_get_resource);
 566
 567 static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev)
 568 {
 569         struct pnp_resource *pnp_res;
 570
 571         pnp_res = kzalloc(sizeof(struct pnp_resource), GFP_KERNEL);
 572         if (!pnp_res)
 573                 return NULL;
 574
 575         list_add_tail(&pnp_res->list, &dev->resources);
 576         return pnp_res;
 577 }
 578
 579 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 580                                           int flags)
 581 {
 582         struct pnp_resource *pnp_res;
 583         struct resource *res;
 584
 585         pnp_res = pnp_new_resource(dev);
 586         if (!pnp_res) {
 587                 dev_err(&dev->dev, "can't add resource for IRQ %d\n", irq);
 588                 return NULL;
 589         }
 590
 591         res = &pnp_res->res;
 592         res->flags = IORESOURCE_IRQ | flags;
 593         res->start = irq;
 594         res->end = irq;
 595
 596         dev_dbg(&dev->dev, "  add irq %d flags %#x\n", irq, flags);
 597         return pnp_res;
 598 }
 599
 600 struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
 601                                           int flags)
 602 {
 603         struct pnp_resource *pnp_res;
 604         struct resource *res;
 605
 606         pnp_res = pnp_new_resource(dev);
 607         if (!pnp_res) {
 608                 dev_err(&dev->dev, "can't add resource for DMA %d\n", dma);
 609                 return NULL;
 610         }
 611
 612         res = &pnp_res->res;
 613         res->flags = IORESOURCE_DMA | flags;
 614         res->start = dma;
 615         res->end = dma;
 616
 617         dev_dbg(&dev->dev, "  add dma %d flags %#x\n", dma, flags);
 618         return pnp_res;
 619 }
 620
 621 struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 622                                          resource_size_t start,
 623                                          resource_size_t end, int flags)
 624 {
 625         struct pnp_resource *pnp_res;
 626         struct resource *res;
 627
 628         pnp_res = pnp_new_resource(dev);
 629         if (!pnp_res) {
 630                 dev_err(&dev->dev, "can't add resource for IO %#llx-%#llx\n",
 631                         (unsigned long long) start,
 632                         (unsigned long long) end);
 633                 return NULL;
 634         }
 635
 636         res = &pnp_res->res;
 637         res->flags = IORESOURCE_IO | flags;
 638         res->start = start;
 639         res->end = end;
 640
 641         dev_dbg(&dev->dev, "  add io  %#llx-%#llx flags %#x\n",
 642                 (unsigned long long) start, (unsigned long long) end, flags);
 643         return pnp_res;
 644 }
 645
 646 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
 647                                           resource_size_t start,
 648                                           resource_size_t end, int flags)
 649 {
 650         struct pnp_resource *pnp_res;
 651         struct resource *res;
 652
 653         pnp_res = pnp_new_resource(dev);
 654         if (!pnp_res) {
 655                 dev_err(&dev->dev, "can't add resource for MEM %#llx-%#llx\n",
 656                         (unsigned long long) start,
 657                         (unsigned long long) end);
 658                 return NULL;
 659         }
 660
 661         res = &pnp_res->res;
 662         res->flags = IORESOURCE_MEM | flags;
 663         res->start = start;
 664         res->end = end;
 665
 666         dev_dbg(&dev->dev, "  add mem %#llx-%#llx flags %#x\n",
 667                 (unsigned long long) start, (unsigned long long) end, flags);
 668         return pnp_res;
 669 }
 670
 671 static int pnp_possible_option(struct pnp_option *option, int type,
 672                                resource_size_t start, resource_size_t size)
 673 {
 674         struct pnp_option *tmp;
 675         struct pnp_port *port;
 676         struct pnp_mem *mem;
 677         struct pnp_irq *irq;
 678         struct pnp_dma *dma;
 679
 680         if (!option)
 681                 return 0;
 682
 683         for (tmp = option; tmp; tmp = tmp->next) {
 684                 switch (type) {
 685                 case IORESOURCE_IO:
 686                         for (port = tmp->port; port; port = port->next) {
 687                                 if (port->min == start && port->size == size)
 688                                         return 1;
 689                         }
 690                         break;
 691                 case IORESOURCE_MEM:
 692                         for (mem = tmp->mem; mem; mem = mem->next) {
 693                                 if (mem->min == start && mem->size == size)
 694                                         return 1;
 695                         }
 696                         break;
 697                 case IORESOURCE_IRQ:
 698                         for (irq = tmp->irq; irq; irq = irq->next) {
 699                                 if (start < PNP_IRQ_NR &&
 700                                     test_bit(start, irq->map.bits))
 701                                         return 1;
 702                         }
 703                         break;
 704                 case IORESOURCE_DMA:
 705                         for (dma = tmp->dma; dma; dma = dma->next) {
 706                                 if (dma->map & (1 << start))
 707                                         return 1;
 708                         }
 709                         break;
 710                 }
 711         }
 712
 713         return 0;
 714 }
 715
 716 /*
 717  * Determine whether the specified resource is a possible configuration
 718  * for this device.
 719  */
 720 int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
 721                         resource_size_t size)
 722 {
 723         if (pnp_possible_option(dev->independent, type, start, size))
 724                 return 1;
 725
 726         if (pnp_possible_option(dev->dependent, type, start, size))
 727                 return 1;
 728
 729         return 0;
 730 }
 731 EXPORT_SYMBOL(pnp_possible_config);
 732
 733 /* format is: pnp_reserve_irq=irq1[,irq2] .... */
 734 static int __init pnp_setup_reserve_irq(char *str)
 735 {
 736         int i;
 737
 738         for (i = 0; i < 16; i++)
 739                 if (get_option(&str, &pnp_reserve_irq[i]) != 2)
 740                         break;
 741         return 1;
 742 }
 743
 744 __setup("pnp_reserve_irq=", pnp_setup_reserve_irq);
 745
 746 /* format is: pnp_reserve_dma=dma1[,dma2] .... */
 747 static int __init pnp_setup_reserve_dma(char *str)
 748 {
 749         int i;
 750
 751         for (i = 0; i < 8; i++)
 752                 if (get_option(&str, &pnp_reserve_dma[i]) != 2)
 753                         break;
 754         return 1;
 755 }
 756
 757 __setup("pnp_reserve_dma=", pnp_setup_reserve_dma);
 758
 759 /* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */
 760 static int __init pnp_setup_reserve_io(char *str)
 761 {
 762         int i;
 763
 764         for (i = 0; i < 16; i++)
 765                 if (get_option(&str, &pnp_reserve_io[i]) != 2)
 766                         break;
 767         return 1;
 768 }
 769
 770 __setup("pnp_reserve_io=", pnp_setup_reserve_io);
 771
 772 /* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */
 773 static int __init pnp_setup_reserve_mem(char *str)
 774 {
 775         int i;
 776
 777         for (i = 0; i < 16; i++)
 778                 if (get_option(&str, &pnp_reserve_mem[i]) != 2)
 779                         break;
 780         return 1;
 781 }
 782
 783 __setup("pnp_reserve_mem=", pnp_setup_reserve_mem);