drivers/pnp/resource.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * resource.c - Contains functions for registering and analyzing resource information
   4  *
   5  * based on isapnp.c resource management (c) Jaroslav Kysela <perex@perex.cz>
   6  * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
   7  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
   8  *      Bjorn Helgaas <bjorn.helgaas@hp.com>
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/slab.h>
  13 #include <linux/errno.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/kernel.h>
  16 #include <asm/io.h>
  17 #include <asm/dma.h>
  18 #include <asm/irq.h>
  19 #include <linux/pci.h>
  20 #include <linux/libata.h>
  21 #include <linux/ioport.h>
  22 #include <linux/init.h>
  23
  24 #include <linux/pnp.h>
  25 #include "base.h"
  26
  27 static int pnp_reserve_irq[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some IRQ */
  28 static int pnp_reserve_dma[8] = {[0 ... 7] = -1 };      /* reserve (don't use) some DMA */
  29 static int pnp_reserve_io[16] = {[0 ... 15] = -1 };     /* reserve (don't use) some I/O region */
  30 static int pnp_reserve_mem[16] = {[0 ... 15] = -1 };    /* reserve (don't use) some memory region */
  31
  32 /*
  33  * option registration
  34  */
  35
  36 static struct pnp_option *pnp_build_option(struct pnp_dev *dev, unsigned long type,
  37                                     unsigned int option_flags)
  38 {
  39         struct pnp_option *option;
  40
  41         option = kzalloc(sizeof(struct pnp_option), GFP_KERNEL);
  42         if (!option)
  43                 return NULL;
  44
  45         option->flags = option_flags;
  46         option->type = type;
  47
  48         list_add_tail(&option->list, &dev->options);
  49         return option;
  50 }
  51
  52 int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
  53                               pnp_irq_mask_t *map, unsigned char flags)
  54 {
  55         struct pnp_option *option;
  56         struct pnp_irq *irq;
  57
  58         option = pnp_build_option(dev, IORESOURCE_IRQ, option_flags);
  59         if (!option)
  60                 return -ENOMEM;
  61
  62         irq = &option->u.irq;
  63         irq->map = *map;
  64         irq->flags = flags;
  65
  66 #ifdef CONFIG_PCI
  67         {
  68                 int i;
  69
  70                 for (i = 0; i < 16; i++)
  71                         if (test_bit(i, irq->map.bits))
  72                                 pcibios_penalize_isa_irq(i, 0);
  73         }
  74 #endif
  75
  76         dbg_pnp_show_option(dev, option);
  77         return 0;
  78 }
  79
  80 int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
  81                               unsigned char map, unsigned char flags)
  82 {
  83         struct pnp_option *option;
  84         struct pnp_dma *dma;
  85
  86         option = pnp_build_option(dev, IORESOURCE_DMA, option_flags);
  87         if (!option)
  88                 return -ENOMEM;
  89
  90         dma = &option->u.dma;
  91         dma->map = map;
  92         dma->flags = flags;
  93
  94         dbg_pnp_show_option(dev, option);
  95         return 0;
  96 }
  97
  98 int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
  99                                resource_size_t min, resource_size_t max,
 100                                resource_size_t align, resource_size_t size,
 101                                unsigned char flags)
 102 {
 103         struct pnp_option *option;
 104         struct pnp_port *port;
 105
 106         option = pnp_build_option(dev, IORESOURCE_IO, option_flags);
 107         if (!option)
 108                 return -ENOMEM;
 109
 110         port = &option->u.port;
 111         port->min = min;
 112         port->max = max;
 113         port->align = align;
 114         port->size = size;
 115         port->flags = flags;
 116
 117         dbg_pnp_show_option(dev, option);
 118         return 0;
 119 }
 120
 121 int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
 122                               resource_size_t min, resource_size_t max,
 123                               resource_size_t align, resource_size_t size,
 124                               unsigned char flags)
 125 {
 126         struct pnp_option *option;
 127         struct pnp_mem *mem;
 128
 129         option = pnp_build_option(dev, IORESOURCE_MEM, option_flags);
 130         if (!option)
 131                 return -ENOMEM;
 132
 133         mem = &option->u.mem;
 134         mem->min = min;
 135         mem->max = max;
 136         mem->align = align;
 137         mem->size = size;
 138         mem->flags = flags;
 139
 140         dbg_pnp_show_option(dev, option);
 141         return 0;
 142 }
 143
 144 void pnp_free_options(struct pnp_dev *dev)
 145 {
 146         struct pnp_option *option, *tmp;
 147
 148         list_for_each_entry_safe(option, tmp, &dev->options, list) {
 149                 list_del(&option->list);
 150                 kfree(option);
 151         }
 152 }
 153
 154 /*
 155  * resource validity checking
 156  */
 157
 158 #define length(start, end) (*(end) - *(start) + 1)
 159
 160 /* Two ranges conflict if one doesn't end before the other starts */
 161 #define ranged_conflict(starta, enda, startb, endb) \
 162         !((*(enda) < *(startb)) || (*(endb) < *(starta)))
 163
 164 #define cannot_compare(flags) \
 165 ((flags) & IORESOURCE_DISABLED)
 166
 167 int pnp_check_port(struct pnp_dev *dev, struct resource *res)
 168 {
 169         int i;
 170         struct pnp_dev *tdev;
 171         struct resource *tres;
 172         resource_size_t *port, *end, *tport, *tend;
 173
 174         port = &res->start;
 175         end = &res->end;
 176
 177         /* if the resource doesn't exist, don't complain about it */
 178         if (cannot_compare(res->flags))
 179                 return 1;
 180
 181         /* check if the resource is already in use, skip if the
 182          * device is active because it itself may be in use */
 183         if (!dev->active) {
 184                 if (!request_region(*port, length(port, end), "pnp"))
 185                         return 0;
 186                 release_region(*port, length(port, end));
 187         }
 188
 189         /* check if the resource is reserved */
 190         for (i = 0; i < 8; i++) {
 191                 int rport = pnp_reserve_io[i << 1];
 192                 int rend = pnp_reserve_io[(i << 1) + 1] + rport - 1;
 193                 if (ranged_conflict(port, end, &rport, &rend))
 194                         return 0;
 195         }
 196
 197         /* check for internal conflicts */
 198         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
 199                 if (tres != res && tres->flags & IORESOURCE_IO) {
 200                         tport = &tres->start;
 201                         tend = &tres->end;
 202                         if (ranged_conflict(port, end, tport, tend))
 203                                 return 0;
 204                 }
 205         }
 206
 207         /* check for conflicts with other pnp devices */
 208         pnp_for_each_dev(tdev) {
 209                 if (tdev == dev)
 210                         continue;
 211                 for (i = 0;
 212                      (tres = pnp_get_resource(tdev, IORESOURCE_IO, i));
 213                      i++) {
 214                         if (tres->flags & IORESOURCE_IO) {
 215                                 if (cannot_compare(tres->flags))
 216                                         continue;
 217                                 if (tres->flags & IORESOURCE_WINDOW)
 218                                         continue;
 219                                 tport = &tres->start;
 220                                 tend = &tres->end;
 221                                 if (ranged_conflict(port, end, tport, tend))
 222                                         return 0;
 223                         }
 224                 }
 225         }
 226
 227         return 1;
 228 }
 229
 230 int pnp_check_mem(struct pnp_dev *dev, struct resource *res)
 231 {
 232         int i;
 233         struct pnp_dev *tdev;
 234         struct resource *tres;
 235         resource_size_t *addr, *end, *taddr, *tend;
 236
 237         addr = &res->start;
 238         end = &res->end;
 239
 240         /* if the resource doesn't exist, don't complain about it */
 241         if (cannot_compare(res->flags))
 242                 return 1;
 243
 244         /* check if the resource is already in use, skip if the
 245          * device is active because it itself may be in use */
 246         if (!dev->active) {
 247                 if (!request_mem_region(*addr, length(addr, end), "pnp"))
 248                         return 0;
 249                 release_mem_region(*addr, length(addr, end));
 250         }
 251
 252         /* check if the resource is reserved */
 253         for (i = 0; i < 8; i++) {
 254                 int raddr = pnp_reserve_mem[i << 1];
 255                 int rend = pnp_reserve_mem[(i << 1) + 1] + raddr - 1;
 256                 if (ranged_conflict(addr, end, &raddr, &rend))
 257                         return 0;
 258         }
 259
 260         /* check for internal conflicts */
 261         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
 262                 if (tres != res && tres->flags & IORESOURCE_MEM) {
 263                         taddr = &tres->start;
 264                         tend = &tres->end;
 265                         if (ranged_conflict(addr, end, taddr, tend))
 266                                 return 0;
 267                 }
 268         }
 269
 270         /* check for conflicts with other pnp devices */
 271         pnp_for_each_dev(tdev) {
 272                 if (tdev == dev)
 273                         continue;
 274                 for (i = 0;
 275                      (tres = pnp_get_resource(tdev, IORESOURCE_MEM, i));
 276                      i++) {
 277                         if (tres->flags & IORESOURCE_MEM) {
 278                                 if (cannot_compare(tres->flags))
 279                                         continue;
 280                                 if (tres->flags & IORESOURCE_WINDOW)
 281                                         continue;
 282                                 taddr = &tres->start;
 283                                 tend = &tres->end;
 284                                 if (ranged_conflict(addr, end, taddr, tend))
 285                                         return 0;
 286                         }
 287                 }
 288         }
 289
 290         return 1;
 291 }
 292
 293 static irqreturn_t pnp_test_handler(int irq, void *dev_id)
 294 {
 295         return IRQ_HANDLED;
 296 }
 297
 298 #ifdef CONFIG_PCI
 299 static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
 300                             unsigned int irq)
 301 {
 302         u32 class;
 303         u8 progif;
 304
 305         if (pci->irq == irq) {
 306                 pnp_dbg(&pnp->dev, "  device %s using irq %d\n",
 307                         pci_name(pci), irq);
 308                 return 1;
 309         }
 310
 311         /*
 312          * See pci_setup_device() and ata_pci_sff_activate_host() for
 313          * similar IDE legacy detection.
 314          */
 315         pci_read_config_dword(pci, PCI_CLASS_REVISION, &class);
 316         class >>= 8;            /* discard revision ID */
 317         progif = class & 0xff;
 318         class >>= 8;
 319
 320         if (class == PCI_CLASS_STORAGE_IDE) {
 321                 /*
 322                  * Unless both channels are native-PCI mode only,
 323                  * treat the compatibility IRQs as busy.
 324                  */
 325                 if ((progif & 0x5) != 0x5)
 326                         if (ATA_PRIMARY_IRQ(pci) == irq ||
 327                             ATA_SECONDARY_IRQ(pci) == irq) {
 328                                 pnp_dbg(&pnp->dev, "  legacy IDE device %s "
 329                                         "using irq %d\n", pci_name(pci), irq);
 330                                 return 1;
 331                         }
 332         }
 333
 334         return 0;
 335 }
 336 #endif
 337
 338 static int pci_uses_irq(struct pnp_dev *pnp, unsigned int irq)
 339 {
 340 #ifdef CONFIG_PCI
 341         struct pci_dev *pci = NULL;
 342
 343         for_each_pci_dev(pci) {
 344                 if (pci_dev_uses_irq(pnp, pci, irq)) {
 345                         pci_dev_put(pci);
 346                         return 1;
 347                 }
 348         }
 349 #endif
 350         return 0;
 351 }
 352
 353 int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
 354 {
 355         int i;
 356         struct pnp_dev *tdev;
 357         struct resource *tres;
 358         resource_size_t *irq;
 359
 360         irq = &res->start;
 361
 362         /* if the resource doesn't exist, don't complain about it */
 363         if (cannot_compare(res->flags))
 364                 return 1;
 365
 366         /* check if the resource is valid */
 367         if (*irq > 15)
 368                 return 0;
 369
 370         /* check if the resource is reserved */
 371         for (i = 0; i < 16; i++) {
 372                 if (pnp_reserve_irq[i] == *irq)
 373                         return 0;
 374         }
 375
 376         /* check for internal conflicts */
 377         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_IRQ, i)); i++) {
 378                 if (tres != res && tres->flags & IORESOURCE_IRQ) {
 379                         if (tres->start == *irq)
 380                                 return 0;
 381                 }
 382         }
 383
 384         /* check if the resource is being used by a pci device */
 385         if (pci_uses_irq(dev, *irq))
 386                 return 0;
 387
 388         /* check if the resource is already in use, skip if the
 389          * device is active because it itself may be in use */
 390         if (!dev->active) {
 391                 if (request_irq(*irq, pnp_test_handler,
 392                                 IRQF_PROBE_SHARED, "pnp", NULL))
 393                         return 0;
 394                 free_irq(*irq, NULL);
 395         }
 396
 397         /* check for conflicts with other pnp devices */
 398         pnp_for_each_dev(tdev) {
 399                 if (tdev == dev)
 400                         continue;
 401                 for (i = 0;
 402                      (tres = pnp_get_resource(tdev, IORESOURCE_IRQ, i));
 403                      i++) {
 404                         if (tres->flags & IORESOURCE_IRQ) {
 405                                 if (cannot_compare(tres->flags))
 406                                         continue;
 407                                 if (tres->start == *irq)
 408                                         return 0;
 409                         }
 410                 }
 411         }
 412
 413         return 1;
 414 }
 415
 416 #ifdef CONFIG_ISA_DMA_API
 417 int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
 418 {
 419         int i;
 420         struct pnp_dev *tdev;
 421         struct resource *tres;
 422         resource_size_t *dma;
 423
 424         dma = &res->start;
 425
 426         /* if the resource doesn't exist, don't complain about it */
 427         if (cannot_compare(res->flags))
 428                 return 1;
 429
 430         /* check if the resource is valid */
 431         if (*dma == 4 || *dma > 7)
 432                 return 0;
 433
 434         /* check if the resource is reserved */
 435         for (i = 0; i < 8; i++) {
 436                 if (pnp_reserve_dma[i] == *dma)
 437                         return 0;
 438         }
 439
 440         /* check for internal conflicts */
 441         for (i = 0; (tres = pnp_get_resource(dev, IORESOURCE_DMA, i)); i++) {
 442                 if (tres != res && tres->flags & IORESOURCE_DMA) {
 443                         if (tres->start == *dma)
 444                                 return 0;
 445                 }
 446         }
 447
 448         /* check if the resource is already in use, skip if the
 449          * device is active because it itself may be in use */
 450         if (!dev->active) {
 451                 if (request_dma(*dma, "pnp"))
 452                         return 0;
 453                 free_dma(*dma);
 454         }
 455
 456         /* check for conflicts with other pnp devices */
 457         pnp_for_each_dev(tdev) {
 458                 if (tdev == dev)
 459                         continue;
 460                 for (i = 0;
 461                      (tres = pnp_get_resource(tdev, IORESOURCE_DMA, i));
 462                      i++) {
 463                         if (tres->flags & IORESOURCE_DMA) {
 464                                 if (cannot_compare(tres->flags))
 465                                         continue;
 466                                 if (tres->start == *dma)
 467                                         return 0;
 468                         }
 469                 }
 470         }
 471
 472         return 1;
 473 }
 474 #endif /* CONFIG_ISA_DMA_API */
 475
 476 unsigned long pnp_resource_type(struct resource *res)
 477 {
 478         return res->flags & (IORESOURCE_IO  | IORESOURCE_MEM |
 479                              IORESOURCE_IRQ | IORESOURCE_DMA |
 480                              IORESOURCE_BUS);
 481 }
 482
 483 struct resource *pnp_get_resource(struct pnp_dev *dev,
 484                                   unsigned long type, unsigned int num)
 485 {
 486         struct pnp_resource *pnp_res;
 487         struct resource *res;
 488
 489         list_for_each_entry(pnp_res, &dev->resources, list) {
 490                 res = &pnp_res->res;
 491                 if (pnp_resource_type(res) == type && num-- == 0)
 492                         return res;
 493         }
 494         return NULL;
 495 }
 496 EXPORT_SYMBOL(pnp_get_resource);
 497
 498 static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev)
 499 {
 500         struct pnp_resource *pnp_res;
 501
 502         pnp_res = kzalloc(sizeof(struct pnp_resource), GFP_KERNEL);
 503         if (!pnp_res)
 504                 return NULL;
 505
 506         list_add_tail(&pnp_res->list, &dev->resources);
 507         return pnp_res;
 508 }
 509
 510 struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
 511                                       struct resource *res)
 512 {
 513         struct pnp_resource *pnp_res;
 514
 515         pnp_res = pnp_new_resource(dev);
 516         if (!pnp_res) {
 517                 dev_err(&dev->dev, "can't add resource %pR\n", res);
 518                 return NULL;
 519         }
 520
 521         pnp_res->res = *res;
 522         pnp_res->res.name = dev->name;
 523         dev_dbg(&dev->dev, "%pR\n", res);
 524         return pnp_res;
 525 }
 526
 527 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 528                                           int flags)
 529 {
 530         struct pnp_resource *pnp_res;
 531         struct resource *res;
 532
 533         pnp_res = pnp_new_resource(dev);
 534         if (!pnp_res) {
 535                 dev_err(&dev->dev, "can't add resource for IRQ %d\n", irq);
 536                 return NULL;
 537         }
 538
 539         res = &pnp_res->res;
 540         res->flags = IORESOURCE_IRQ | flags;
 541         res->start = irq;
 542         res->end = irq;
 543
 544         dev_dbg(&dev->dev, "%pR\n", res);
 545         return pnp_res;
 546 }
 547
 548 struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
 549                                           int flags)
 550 {
 551         struct pnp_resource *pnp_res;
 552         struct resource *res;
 553
 554         pnp_res = pnp_new_resource(dev);
 555         if (!pnp_res) {
 556                 dev_err(&dev->dev, "can't add resource for DMA %d\n", dma);
 557                 return NULL;
 558         }
 559
 560         res = &pnp_res->res;
 561         res->flags = IORESOURCE_DMA | flags;
 562         res->start = dma;
 563         res->end = dma;
 564
 565         dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
 566         return pnp_res;
 567 }
 568
 569 struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 570                                          resource_size_t start,
 571                                          resource_size_t end, int flags)
 572 {
 573         struct pnp_resource *pnp_res;
 574         struct resource *res;
 575
 576         pnp_res = pnp_new_resource(dev);
 577         if (!pnp_res) {
 578                 dev_err(&dev->dev, "can't add resource for IO %#llx-%#llx\n",
 579                         (unsigned long long) start,
 580                         (unsigned long long) end);
 581                 return NULL;
 582         }
 583
 584         res = &pnp_res->res;
 585         res->flags = IORESOURCE_IO | flags;
 586         res->start = start;
 587         res->end = end;
 588
 589         dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
 590         return pnp_res;
 591 }
 592
 593 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
 594                                           resource_size_t start,
 595                                           resource_size_t end, int flags)
 596 {
 597         struct pnp_resource *pnp_res;
 598         struct resource *res;
 599
 600         pnp_res = pnp_new_resource(dev);
 601         if (!pnp_res) {
 602                 dev_err(&dev->dev, "can't add resource for MEM %#llx-%#llx\n",
 603                         (unsigned long long) start,
 604                         (unsigned long long) end);
 605                 return NULL;
 606         }
 607
 608         res = &pnp_res->res;
 609         res->flags = IORESOURCE_MEM | flags;
 610         res->start = start;
 611         res->end = end;
 612
 613         dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
 614         return pnp_res;
 615 }
 616
 617 struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
 618                                           resource_size_t start,
 619                                           resource_size_t end)
 620 {
 621         struct pnp_resource *pnp_res;
 622         struct resource *res;
 623
 624         pnp_res = pnp_new_resource(dev);
 625         if (!pnp_res) {
 626                 dev_err(&dev->dev, "can't add resource for BUS %#llx-%#llx\n",
 627                         (unsigned long long) start,
 628                         (unsigned long long) end);
 629                 return NULL;
 630         }
 631
 632         res = &pnp_res->res;
 633         res->flags = IORESOURCE_BUS;
 634         res->start = start;
 635         res->end = end;
 636
 637         dev_printk(KERN_DEBUG, &dev->dev, "%pR\n", res);
 638         return pnp_res;
 639 }
 640
 641 /*
 642  * Determine whether the specified resource is a possible configuration
 643  * for this device.
 644  */
 645 int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t start,
 646                         resource_size_t size)
 647 {
 648         struct pnp_option *option;
 649         struct pnp_port *port;
 650         struct pnp_mem *mem;
 651         struct pnp_irq *irq;
 652         struct pnp_dma *dma;
 653
 654         list_for_each_entry(option, &dev->options, list) {
 655                 if (option->type != type)
 656                         continue;
 657
 658                 switch (option->type) {
 659                 case IORESOURCE_IO:
 660                         port = &option->u.port;
 661                         if (port->min == start && port->size == size)
 662                                 return 1;
 663                         break;
 664                 case IORESOURCE_MEM:
 665                         mem = &option->u.mem;
 666                         if (mem->min == start && mem->size == size)
 667                                 return 1;
 668                         break;
 669                 case IORESOURCE_IRQ:
 670                         irq = &option->u.irq;
 671                         if (start < PNP_IRQ_NR &&
 672                             test_bit(start, irq->map.bits))
 673                                 return 1;
 674                         break;
 675                 case IORESOURCE_DMA:
 676                         dma = &option->u.dma;
 677                         if (dma->map & (1 << start))
 678                                 return 1;
 679                         break;
 680                 }
 681         }
 682
 683         return 0;
 684 }
 685 EXPORT_SYMBOL(pnp_possible_config);
 686
 687 int pnp_range_reserved(resource_size_t start, resource_size_t end)
 688 {
 689         struct pnp_dev *dev;
 690         struct pnp_resource *pnp_res;
 691         resource_size_t *dev_start, *dev_end;
 692
 693         pnp_for_each_dev(dev) {
 694                 list_for_each_entry(pnp_res, &dev->resources, list) {
 695                         dev_start = &pnp_res->res.start;
 696                         dev_end   = &pnp_res->res.end;
 697                         if (ranged_conflict(&start, &end, dev_start, dev_end))
 698                                 return 1;
 699                 }
 700         }
 701         return 0;
 702 }
 703 EXPORT_SYMBOL(pnp_range_reserved);
 704
 705 /* format is: pnp_reserve_irq=irq1[,irq2] .... */
 706 static int __init pnp_setup_reserve_irq(char *str)
 707 {
 708         int i;
 709
 710         for (i = 0; i < 16; i++)
 711                 if (get_option(&str, &pnp_reserve_irq[i]) != 2)
 712                         break;
 713         return 1;
 714 }
 715
 716 __setup("pnp_reserve_irq=", pnp_setup_reserve_irq);
 717
 718 /* format is: pnp_reserve_dma=dma1[,dma2] .... */
 719 static int __init pnp_setup_reserve_dma(char *str)
 720 {
 721         int i;
 722
 723         for (i = 0; i < 8; i++)
 724                 if (get_option(&str, &pnp_reserve_dma[i]) != 2)
 725                         break;
 726         return 1;
 727 }
 728
 729 __setup("pnp_reserve_dma=", pnp_setup_reserve_dma);
 730
 731 /* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */
 732 static int __init pnp_setup_reserve_io(char *str)
 733 {
 734         int i;
 735
 736         for (i = 0; i < 16; i++)
 737                 if (get_option(&str, &pnp_reserve_io[i]) != 2)
 738                         break;
 739         return 1;
 740 }
 741
 742 __setup("pnp_reserve_io=", pnp_setup_reserve_io);
 743
 744 /* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */
 745 static int __init pnp_setup_reserve_mem(char *str)
 746 {
 747         int i;
 748
 749         for (i = 0; i < 16; i++)
 750                 if (get_option(&str, &pnp_reserve_mem[i]) != 2)
 751                         break;
 752         return 1;
 753 }
 754
 755 __setup("pnp_reserve_mem=", pnp_setup_reserve_mem);