drivers/pnp/pnpacpi/rsparser.c

   1 /*
   2  * pnpacpi -- PnP ACPI driver
   3  *
   4  * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
   5  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/kernel.h>
  22 #include <linux/acpi.h>
  23 #include <linux/pci.h>
  24 #include "pnpacpi.h"
  25
  26 #ifdef CONFIG_IA64
  27 #define valid_IRQ(i) (1)
  28 #else
  29 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  30 #endif
  31
  32 /*
  33  * Allocated Resources
  34  */
  35 static int irq_flags(int triggering, int polarity)
  36 {
  37         int flag;
  38         if (triggering == ACPI_LEVEL_SENSITIVE) {
  39                 if (polarity == ACPI_ACTIVE_LOW)
  40                         flag = IORESOURCE_IRQ_LOWLEVEL;
  41                 else
  42                         flag = IORESOURCE_IRQ_HIGHLEVEL;
  43         }
  44         else {
  45                 if (polarity == ACPI_ACTIVE_LOW)
  46                         flag = IORESOURCE_IRQ_LOWEDGE;
  47                 else
  48                         flag = IORESOURCE_IRQ_HIGHEDGE;
  49         }
  50         return flag;
  51 }
  52
  53 static void decode_irq_flags(int flag, int *triggering, int *polarity)
  54 {
  55         switch (flag) {
  56         case IORESOURCE_IRQ_LOWLEVEL:
  57                 *triggering = ACPI_LEVEL_SENSITIVE;
  58                 *polarity = ACPI_ACTIVE_LOW;
  59                 break;
  60         case IORESOURCE_IRQ_HIGHLEVEL:
  61                 *triggering = ACPI_LEVEL_SENSITIVE;
  62                 *polarity = ACPI_ACTIVE_HIGH;
  63                 break;
  64         case IORESOURCE_IRQ_LOWEDGE:
  65                 *triggering = ACPI_EDGE_SENSITIVE;
  66                 *polarity = ACPI_ACTIVE_LOW;
  67                 break;
  68         case IORESOURCE_IRQ_HIGHEDGE:
  69                 *triggering = ACPI_EDGE_SENSITIVE;
  70                 *polarity = ACPI_ACTIVE_HIGH;
  71                 break;
  72         }
  73 }
  74
  75 static void
  76 pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res, u32 gsi,
  77         int triggering, int polarity)
  78 {
  79         int i = 0;
  80         int irq;
  81
  82         if (!valid_IRQ(gsi))
  83                 return;
  84
  85         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
  86                         i < PNP_MAX_IRQ)
  87                 i++;
  88         if (i >= PNP_MAX_IRQ)
  89                 return;
  90
  91         res->irq_resource[i].flags = IORESOURCE_IRQ;  // Also clears _UNSET flag
  92         irq = acpi_register_gsi(gsi, triggering, polarity);
  93         if (irq < 0) {
  94                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
  95                 return;
  96         }
  97
  98         res->irq_resource[i].start = irq;
  99         res->irq_resource[i].end = irq;
 100         pcibios_penalize_isa_irq(irq, 1);
 101 }
 102
 103 static void
 104 pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table *res, u32 dma)
 105 {
 106         int i = 0;
 107         while (i < PNP_MAX_DMA &&
 108                         !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 109                 i++;
 110         if (i < PNP_MAX_DMA) {
 111                 res->dma_resource[i].flags = IORESOURCE_DMA;  // Also clears _UNSET flag
 112                 if (dma == -1) {
 113                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 114                         return;
 115                 }
 116                 res->dma_resource[i].start = dma;
 117                 res->dma_resource[i].end = dma;
 118         }
 119 }
 120
 121 static void
 122 pnpacpi_parse_allocated_ioresource(struct pnp_resource_table *res,
 123         u64 io, u64 len)
 124 {
 125         int i = 0;
 126         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 127                         i < PNP_MAX_PORT)
 128                 i++;
 129         if (i < PNP_MAX_PORT) {
 130                 res->port_resource[i].flags = IORESOURCE_IO;  // Also clears _UNSET flag
 131                 if (len <= 0 || (io + len -1) >= 0x10003) {
 132                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 133                         return;
 134                 }
 135                 res->port_resource[i].start = io;
 136                 res->port_resource[i].end = io + len - 1;
 137         }
 138 }
 139
 140 static void
 141 pnpacpi_parse_allocated_memresource(struct pnp_resource_table *res,
 142         u64 mem, u64 len)
 143 {
 144         int i = 0;
 145         while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
 146                         (i < PNP_MAX_MEM))
 147                 i++;
 148         if (i < PNP_MAX_MEM) {
 149                 res->mem_resource[i].flags = IORESOURCE_MEM;  // Also clears _UNSET flag
 150                 if (len <= 0) {
 151                         res->mem_resource[i].flags |= IORESOURCE_DISABLED;
 152                         return;
 153                 }
 154                 res->mem_resource[i].start = mem;
 155                 res->mem_resource[i].end = mem + len - 1;
 156         }
 157 }
 158
 159 static void
 160 pnpacpi_parse_allocated_address_space(struct pnp_resource_table *res_table,
 161         struct acpi_resource *res)
 162 {
 163         struct acpi_resource_address64 addr, *p = &addr;
 164         acpi_status status;
 165
 166         status = acpi_resource_to_address64(res, p);
 167         if (!ACPI_SUCCESS(status)) {
 168                 pnp_warn("PnPACPI: failed to convert resource type %d",
 169                         res->type);
 170                 return;
 171         }
 172
 173         if (p->resource_type == ACPI_MEMORY_RANGE)
 174                 pnpacpi_parse_allocated_memresource(res_table,
 175                                 p->minimum, p->address_length);
 176         else if (p->resource_type == ACPI_IO_RANGE)
 177                 pnpacpi_parse_allocated_ioresource(res_table,
 178                                 p->minimum, p->address_length);
 179 }
 180
 181 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 182         void *data)
 183 {
 184         struct pnp_resource_table *res_table = (struct pnp_resource_table *)data;
 185         int i;
 186
 187         switch (res->type) {
 188         case ACPI_RESOURCE_TYPE_IRQ:
 189                 /*
 190                  * Per spec, only one interrupt per descriptor is allowed in
 191                  * _CRS, but some firmware violates this, so parse them all.
 192                  */
 193                 for (i = 0; i < res->data.irq.interrupt_count; i++) {
 194                         pnpacpi_parse_allocated_irqresource(res_table,
 195                                 res->data.irq.interrupts[i],
 196                                 res->data.irq.triggering,
 197                                 res->data.irq.polarity);
 198                 }
 199                 break;
 200
 201         case ACPI_RESOURCE_TYPE_DMA:
 202                 if (res->data.dma.channel_count > 0)
 203                         pnpacpi_parse_allocated_dmaresource(res_table,
 204                                         res->data.dma.channels[0]);
 205                 break;
 206
 207         case ACPI_RESOURCE_TYPE_IO:
 208                 pnpacpi_parse_allocated_ioresource(res_table,
 209                                 res->data.io.minimum,
 210                                 res->data.io.address_length);
 211                 break;
 212
 213         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 214         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 215                 break;
 216
 217         case ACPI_RESOURCE_TYPE_FIXED_IO:
 218                 pnpacpi_parse_allocated_ioresource(res_table,
 219                                 res->data.fixed_io.address,
 220                                 res->data.fixed_io.address_length);
 221                 break;
 222
 223         case ACPI_RESOURCE_TYPE_VENDOR:
 224                 break;
 225
 226         case ACPI_RESOURCE_TYPE_END_TAG:
 227                 break;
 228
 229         case ACPI_RESOURCE_TYPE_MEMORY24:
 230                 pnpacpi_parse_allocated_memresource(res_table,
 231                                 res->data.memory24.minimum,
 232                                 res->data.memory24.address_length);
 233                 break;
 234         case ACPI_RESOURCE_TYPE_MEMORY32:
 235                 pnpacpi_parse_allocated_memresource(res_table,
 236                                 res->data.memory32.minimum,
 237                                 res->data.memory32.address_length);
 238                 break;
 239         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 240                 pnpacpi_parse_allocated_memresource(res_table,
 241                                 res->data.fixed_memory32.address,
 242                                 res->data.fixed_memory32.address_length);
 243                 break;
 244         case ACPI_RESOURCE_TYPE_ADDRESS16:
 245         case ACPI_RESOURCE_TYPE_ADDRESS32:
 246         case ACPI_RESOURCE_TYPE_ADDRESS64:
 247                 pnpacpi_parse_allocated_address_space(res_table, res);
 248                 break;
 249
 250         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 251                 break;
 252
 253         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 254                 for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
 255                         pnpacpi_parse_allocated_irqresource(res_table,
 256                                 res->data.extended_irq.interrupts[i],
 257                                 res->data.extended_irq.triggering,
 258                                 res->data.extended_irq.polarity);
 259                 }
 260                 break;
 261
 262         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 263                 break;
 264
 265         default:
 266                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 267                 return AE_ERROR;
 268         }
 269
 270         return AE_OK;
 271 }
 272
 273 acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle, struct pnp_resource_table *res)
 274 {
 275         /* Blank the resource table values */
 276         pnp_init_resource_table(res);
 277
 278         return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res);
 279 }
 280
 281 static void pnpacpi_parse_dma_option(struct pnp_option *option, struct acpi_resource_dma *p)
 282 {
 283         int i;
 284         struct pnp_dma * dma;
 285
 286         if (p->channel_count == 0)
 287                 return;
 288         dma = kcalloc(1, sizeof(struct pnp_dma), GFP_KERNEL);
 289         if (!dma)
 290                 return;
 291
 292         for(i = 0; i < p->channel_count; i++)
 293                 dma->map |= 1 << p->channels[i];
 294         dma->flags = 0;
 295         if (p->bus_master)
 296                 dma->flags |= IORESOURCE_DMA_MASTER;
 297         switch (p->type) {
 298         case ACPI_COMPATIBILITY:
 299                 dma->flags |= IORESOURCE_DMA_COMPATIBLE;
 300                 break;
 301         case ACPI_TYPE_A:
 302                 dma->flags |= IORESOURCE_DMA_TYPEA;
 303                 break;
 304         case ACPI_TYPE_B:
 305                 dma->flags |= IORESOURCE_DMA_TYPEB;
 306                 break;
 307         case ACPI_TYPE_F:
 308                 dma->flags |= IORESOURCE_DMA_TYPEF;
 309                 break;
 310         default:
 311                 /* Set a default value ? */
 312                 dma->flags |= IORESOURCE_DMA_COMPATIBLE;
 313                 pnp_err("Invalid DMA type");
 314         }
 315         switch (p->transfer) {
 316         case ACPI_TRANSFER_8:
 317                 dma->flags |= IORESOURCE_DMA_8BIT;
 318                 break;
 319         case ACPI_TRANSFER_8_16:
 320                 dma->flags |= IORESOURCE_DMA_8AND16BIT;
 321                 break;
 322         case ACPI_TRANSFER_16:
 323                 dma->flags |= IORESOURCE_DMA_16BIT;
 324                 break;
 325         default:
 326                 /* Set a default value ? */
 327                 dma->flags |= IORESOURCE_DMA_8AND16BIT;
 328                 pnp_err("Invalid DMA transfer type");
 329         }
 330
 331         pnp_register_dma_resource(option, dma);
 332         return;
 333 }
 334
 335
 336 static void pnpacpi_parse_irq_option(struct pnp_option *option,
 337         struct acpi_resource_irq *p)
 338 {
 339         int i;
 340         struct pnp_irq *irq;
 341
 342         if (p->interrupt_count == 0)
 343                 return;
 344         irq = kcalloc(1, sizeof(struct pnp_irq), GFP_KERNEL);
 345         if (!irq)
 346                 return;
 347
 348         for(i = 0; i < p->interrupt_count; i++)
 349                 if (p->interrupts[i])
 350                         __set_bit(p->interrupts[i], irq->map);
 351         irq->flags = irq_flags(p->triggering, p->polarity);
 352
 353         pnp_register_irq_resource(option, irq);
 354         return;
 355 }
 356
 357 static void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
 358         struct acpi_resource_extended_irq *p)
 359 {
 360         int i;
 361         struct pnp_irq *irq;
 362
 363         if (p->interrupt_count == 0)
 364                 return;
 365         irq = kcalloc(1, sizeof(struct pnp_irq), GFP_KERNEL);
 366         if (!irq)
 367                 return;
 368
 369         for(i = 0; i < p->interrupt_count; i++)
 370                 if (p->interrupts[i])
 371                         __set_bit(p->interrupts[i], irq->map);
 372         irq->flags = irq_flags(p->triggering, p->polarity);
 373
 374         pnp_register_irq_resource(option, irq);
 375         return;
 376 }
 377
 378 static void
 379 pnpacpi_parse_port_option(struct pnp_option *option,
 380         struct acpi_resource_io *io)
 381 {
 382         struct pnp_port *port;
 383
 384         if (io->address_length == 0)
 385                 return;
 386         port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL);
 387         if (!port)
 388                 return;
 389         port->min = io->minimum;
 390         port->max = io->maximum;
 391         port->align = io->alignment;
 392         port->size = io->address_length;
 393         port->flags = ACPI_DECODE_16 == io->io_decode ?
 394                 PNP_PORT_FLAG_16BITADDR : 0;
 395         pnp_register_port_resource(option, port);
 396         return;
 397 }
 398
 399 static void
 400 pnpacpi_parse_fixed_port_option(struct pnp_option *option,
 401         struct acpi_resource_fixed_io *io)
 402 {
 403         struct pnp_port *port;
 404
 405         if (io->address_length == 0)
 406                 return;
 407         port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL);
 408         if (!port)
 409                 return;
 410         port->min = port->max = io->address;
 411         port->size = io->address_length;
 412         port->align = 0;
 413         port->flags = PNP_PORT_FLAG_FIXED;
 414         pnp_register_port_resource(option, port);
 415         return;
 416 }
 417
 418 static void
 419 pnpacpi_parse_mem24_option(struct pnp_option *option,
 420         struct acpi_resource_memory24 *p)
 421 {
 422         struct pnp_mem *mem;
 423
 424         if (p->address_length == 0)
 425                 return;
 426         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 427         if (!mem)
 428                 return;
 429         mem->min = p->minimum;
 430         mem->max = p->maximum;
 431         mem->align = p->alignment;
 432         mem->size = p->address_length;
 433
 434         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 435                         IORESOURCE_MEM_WRITEABLE : 0;
 436
 437         pnp_register_mem_resource(option, mem);
 438         return;
 439 }
 440
 441 static void
 442 pnpacpi_parse_mem32_option(struct pnp_option *option,
 443         struct acpi_resource_memory32 *p)
 444 {
 445         struct pnp_mem *mem;
 446
 447         if (p->address_length == 0)
 448                 return;
 449         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 450         if (!mem)
 451                 return;
 452         mem->min = p->minimum;
 453         mem->max = p->maximum;
 454         mem->align = p->alignment;
 455         mem->size = p->address_length;
 456
 457         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 458                         IORESOURCE_MEM_WRITEABLE : 0;
 459
 460         pnp_register_mem_resource(option, mem);
 461         return;
 462 }
 463
 464 static void
 465 pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
 466         struct acpi_resource_fixed_memory32 *p)
 467 {
 468         struct pnp_mem *mem;
 469
 470         if (p->address_length == 0)
 471                 return;
 472         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 473         if (!mem)
 474                 return;
 475         mem->min = mem->max = p->address;
 476         mem->size = p->address_length;
 477         mem->align = 0;
 478
 479         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 480                         IORESOURCE_MEM_WRITEABLE : 0;
 481
 482         pnp_register_mem_resource(option, mem);
 483         return;
 484 }
 485
 486 static void
 487 pnpacpi_parse_address_option(struct pnp_option *option, struct acpi_resource *r)
 488 {
 489         struct acpi_resource_address64 addr, *p = &addr;
 490         acpi_status status;
 491         struct pnp_mem *mem;
 492         struct pnp_port *port;
 493
 494         status = acpi_resource_to_address64(r, p);
 495         if (!ACPI_SUCCESS(status)) {
 496                 pnp_warn("PnPACPI: failed to convert resource type %d", r->type);
 497                 return;
 498         }
 499
 500         if (p->address_length == 0)
 501                 return;
 502
 503         if (p->resource_type == ACPI_MEMORY_RANGE) {
 504                 mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 505                 if (!mem)
 506                         return;
 507                 mem->min = mem->max = p->minimum;
 508                 mem->size = p->address_length;
 509                 mem->align = 0;
 510                 mem->flags = (p->info.mem.write_protect ==
 511                     ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE : 0;
 512                 pnp_register_mem_resource(option, mem);
 513         } else if (p->resource_type == ACPI_IO_RANGE) {
 514                 port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL);
 515                 if (!port)
 516                         return;
 517                 port->min = port->max = p->minimum;
 518                 port->size = p->address_length;
 519                 port->align = 0;
 520                 port->flags = PNP_PORT_FLAG_FIXED;
 521                 pnp_register_port_resource(option, port);
 522         }
 523 }
 524
 525 struct acpipnp_parse_option_s {
 526         struct pnp_option *option;
 527         struct pnp_option *option_independent;
 528         struct pnp_dev *dev;
 529 };
 530
 531 static acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 532         void *data)
 533 {
 534         int priority = 0;
 535         struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
 536         struct pnp_dev *dev = parse_data->dev;
 537         struct pnp_option *option = parse_data->option;
 538
 539         switch (res->type) {
 540                 case ACPI_RESOURCE_TYPE_IRQ:
 541                         pnpacpi_parse_irq_option(option, &res->data.irq);
 542                         break;
 543
 544                 case ACPI_RESOURCE_TYPE_DMA:
 545                         pnpacpi_parse_dma_option(option, &res->data.dma);
 546                         break;
 547
 548                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 549                         switch (res->data.start_dpf.compatibility_priority) {
 550                                 case ACPI_GOOD_CONFIGURATION:
 551                                         priority = PNP_RES_PRIORITY_PREFERRED;
 552                                         break;
 553
 554                                 case ACPI_ACCEPTABLE_CONFIGURATION:
 555                                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 556                                         break;
 557
 558                                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 559                                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 560                                         break;
 561                                 default:
 562                                         priority = PNP_RES_PRIORITY_INVALID;
 563                                         break;
 564                         }
 565                         /* TBD: Considering performace/robustness bits */
 566                         option = pnp_register_dependent_option(dev, priority);
 567                         if (!option)
 568                                 return AE_ERROR;
 569                         parse_data->option = option;
 570                         break;
 571
 572                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 573                         /*only one EndDependentFn is allowed*/
 574                         if (!parse_data->option_independent) {
 575                                 pnp_warn("PnPACPI: more than one EndDependentFn");
 576                                 return AE_ERROR;
 577                         }
 578                         parse_data->option = parse_data->option_independent;
 579                         parse_data->option_independent = NULL;
 580                         break;
 581
 582                 case ACPI_RESOURCE_TYPE_IO:
 583                         pnpacpi_parse_port_option(option, &res->data.io);
 584                         break;
 585
 586                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 587                         pnpacpi_parse_fixed_port_option(option,
 588                                 &res->data.fixed_io);
 589                         break;
 590
 591                 case ACPI_RESOURCE_TYPE_VENDOR:
 592                 case ACPI_RESOURCE_TYPE_END_TAG:
 593                         break;
 594
 595                 case ACPI_RESOURCE_TYPE_MEMORY24:
 596                         pnpacpi_parse_mem24_option(option, &res->data.memory24);
 597                         break;
 598
 599                 case ACPI_RESOURCE_TYPE_MEMORY32:
 600                         pnpacpi_parse_mem32_option(option, &res->data.memory32);
 601                         break;
 602
 603                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 604                         pnpacpi_parse_fixed_mem32_option(option,
 605                                 &res->data.fixed_memory32);
 606                         break;
 607
 608                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 609                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 610                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 611                         pnpacpi_parse_address_option(option, res);
 612                         break;
 613
 614                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 615                         break;
 616
 617                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 618                         pnpacpi_parse_ext_irq_option(option,
 619                                 &res->data.extended_irq);
 620                         break;
 621
 622                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 623                         break;
 624
 625                 default:
 626                         pnp_warn("PnPACPI: unknown resource type %d", res->type);
 627                         return AE_ERROR;
 628         }
 629
 630         return AE_OK;
 631 }
 632
 633 acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle,
 634         struct pnp_dev *dev)
 635 {
 636         acpi_status status;
 637         struct acpipnp_parse_option_s parse_data;
 638
 639         parse_data.option = pnp_register_independent_option(dev);
 640         if (!parse_data.option)
 641                 return AE_ERROR;
 642         parse_data.option_independent = parse_data.option;
 643         parse_data.dev = dev;
 644         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 645                 pnpacpi_option_resource, &parse_data);
 646
 647         return status;
 648 }
 649
 650 static int pnpacpi_supported_resource(struct acpi_resource *res)
 651 {
 652         switch (res->type) {
 653         case ACPI_RESOURCE_TYPE_IRQ:
 654         case ACPI_RESOURCE_TYPE_DMA:
 655         case ACPI_RESOURCE_TYPE_IO:
 656         case ACPI_RESOURCE_TYPE_FIXED_IO:
 657         case ACPI_RESOURCE_TYPE_MEMORY24:
 658         case ACPI_RESOURCE_TYPE_MEMORY32:
 659         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 660         case ACPI_RESOURCE_TYPE_ADDRESS16:
 661         case ACPI_RESOURCE_TYPE_ADDRESS32:
 662         case ACPI_RESOURCE_TYPE_ADDRESS64:
 663         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 664                 return 1;
 665         }
 666         return 0;
 667 }
 668
 669 /*
 670  * Set resource
 671  */
 672 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 673         void *data)
 674 {
 675         int *res_cnt = (int *)data;
 676
 677         if (pnpacpi_supported_resource(res))
 678                 (*res_cnt)++;
 679         return AE_OK;
 680 }
 681
 682 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 683 {
 684         struct acpi_resource **resource = (struct acpi_resource **)data;
 685
 686         if (pnpacpi_supported_resource(res)) {
 687                 (*resource)->type = res->type;
 688                 (*resource)->length = sizeof(struct acpi_resource);
 689                 (*resource)++;
 690         }
 691
 692         return AE_OK;
 693 }
 694
 695 int pnpacpi_build_resource_template(acpi_handle handle,
 696         struct acpi_buffer *buffer)
 697 {
 698         struct acpi_resource *resource;
 699         int res_cnt = 0;
 700         acpi_status status;
 701
 702         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 703                 pnpacpi_count_resources, &res_cnt);
 704         if (ACPI_FAILURE(status)) {
 705                 pnp_err("Evaluate _CRS failed");
 706                 return -EINVAL;
 707         }
 708         if (!res_cnt)
 709                 return -EINVAL;
 710         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 711         buffer->pointer = kcalloc(1, buffer->length - 1, GFP_KERNEL);
 712         if (!buffer->pointer)
 713                 return -ENOMEM;
 714         pnp_dbg("Res cnt %d", res_cnt);
 715         resource = (struct acpi_resource *)buffer->pointer;
 716         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 717                 pnpacpi_type_resources, &resource);
 718         if (ACPI_FAILURE(status)) {
 719                 kfree(buffer->pointer);
 720                 pnp_err("Evaluate _CRS failed");
 721                 return -EINVAL;
 722         }
 723         /* resource will pointer the end resource now */
 724         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 725
 726         return 0;
 727 }
 728
 729 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 730         struct resource *p)
 731 {
 732         int triggering, polarity;
 733
 734         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 735         resource->data.irq.triggering = triggering;
 736         resource->data.irq.polarity = polarity;
 737         if (triggering == ACPI_EDGE_SENSITIVE)
 738                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 739         else
 740                 resource->data.irq.sharable = ACPI_SHARED;
 741         resource->data.irq.interrupt_count = 1;
 742         resource->data.irq.interrupts[0] = p->start;
 743 }
 744
 745 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 746         struct resource *p)
 747 {
 748         int triggering, polarity;
 749
 750         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 751         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 752         resource->data.extended_irq.triggering = triggering;
 753         resource->data.extended_irq.polarity = polarity;
 754         if (triggering == ACPI_EDGE_SENSITIVE)
 755                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 756         else
 757                 resource->data.irq.sharable = ACPI_SHARED;
 758         resource->data.extended_irq.interrupt_count = 1;
 759         resource->data.extended_irq.interrupts[0] = p->start;
 760 }
 761
 762 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 763         struct resource *p)
 764 {
 765         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 766         if (p->flags & IORESOURCE_DMA_COMPATIBLE)
 767                 resource->data.dma.type = ACPI_COMPATIBILITY;
 768         else if (p->flags & IORESOURCE_DMA_TYPEA)
 769                 resource->data.dma.type = ACPI_TYPE_A;
 770         else if (p->flags & IORESOURCE_DMA_TYPEB)
 771                 resource->data.dma.type = ACPI_TYPE_B;
 772         else if (p->flags & IORESOURCE_DMA_TYPEF)
 773                 resource->data.dma.type = ACPI_TYPE_F;
 774         if (p->flags & IORESOURCE_DMA_8BIT)
 775                 resource->data.dma.transfer = ACPI_TRANSFER_8;
 776         else if (p->flags & IORESOURCE_DMA_8AND16BIT)
 777                 resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 778         else if (p->flags & IORESOURCE_DMA_16BIT)
 779                 resource->data.dma.transfer = ACPI_TRANSFER_16;
 780         resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER;
 781         resource->data.dma.channel_count = 1;
 782         resource->data.dma.channels[0] = p->start;
 783 }
 784
 785 static void pnpacpi_encode_io(struct acpi_resource *resource,
 786         struct resource *p)
 787 {
 788         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 789         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
 790                 ACPI_DECODE_16 : ACPI_DECODE_10;
 791         resource->data.io.minimum = p->start;
 792         resource->data.io.maximum = p->end;
 793         resource->data.io.alignment = 0; /* Correct? */
 794         resource->data.io.address_length = p->end - p->start + 1;
 795 }
 796
 797 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 798         struct resource *p)
 799 {
 800         resource->data.fixed_io.address = p->start;
 801         resource->data.fixed_io.address_length = p->end - p->start + 1;
 802 }
 803
 804 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 805         struct resource *p)
 806 {
 807         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 808         resource->data.memory24.write_protect =
 809                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 810                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 811         resource->data.memory24.minimum = p->start;
 812         resource->data.memory24.maximum = p->end;
 813         resource->data.memory24.alignment = 0;
 814         resource->data.memory24.address_length = p->end - p->start + 1;
 815 }
 816
 817 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 818         struct resource *p)
 819 {
 820         resource->data.memory32.write_protect =
 821                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 822                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 823         resource->data.memory32.minimum = p->start;
 824         resource->data.memory32.maximum = p->end;
 825         resource->data.memory32.alignment = 0;
 826         resource->data.memory32.address_length = p->end - p->start + 1;
 827 }
 828
 829 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 830         struct resource *p)
 831 {
 832         resource->data.fixed_memory32.write_protect =
 833                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 834                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 835         resource->data.fixed_memory32.address = p->start;
 836         resource->data.fixed_memory32.address_length = p->end - p->start + 1;
 837 }
 838
 839 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 840         struct acpi_buffer *buffer)
 841 {
 842         int i = 0;
 843         /* pnpacpi_build_resource_template allocates extra mem */
 844         int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
 845         struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
 846         int port = 0, irq = 0, dma = 0, mem = 0;
 847
 848         pnp_dbg("res cnt %d", res_cnt);
 849         while (i < res_cnt) {
 850                 switch(resource->type) {
 851                 case ACPI_RESOURCE_TYPE_IRQ:
 852                         pnp_dbg("Encode irq");
 853                         pnpacpi_encode_irq(resource,
 854                                 &res_table->irq_resource[irq]);
 855                         irq++;
 856                         break;
 857
 858                 case ACPI_RESOURCE_TYPE_DMA:
 859                         pnp_dbg("Encode dma");
 860                         pnpacpi_encode_dma(resource,
 861                                 &res_table->dma_resource[dma]);
 862                         dma++;
 863                         break;
 864                 case ACPI_RESOURCE_TYPE_IO:
 865                         pnp_dbg("Encode io");
 866                         pnpacpi_encode_io(resource,
 867                                 &res_table->port_resource[port]);
 868                         port++;
 869                         break;
 870                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 871                         pnp_dbg("Encode fixed io");
 872                         pnpacpi_encode_fixed_io(resource,
 873                                 &res_table->port_resource[port]);
 874                         port++;
 875                         break;
 876                 case ACPI_RESOURCE_TYPE_MEMORY24:
 877                         pnp_dbg("Encode mem24");
 878                         pnpacpi_encode_mem24(resource,
 879                                 &res_table->mem_resource[mem]);
 880                         mem++;
 881                         break;
 882                 case ACPI_RESOURCE_TYPE_MEMORY32:
 883                         pnp_dbg("Encode mem32");
 884                         pnpacpi_encode_mem32(resource,
 885                                 &res_table->mem_resource[mem]);
 886                         mem++;
 887                         break;
 888                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 889                         pnp_dbg("Encode fixed mem32");
 890                         pnpacpi_encode_fixed_mem32(resource,
 891                                 &res_table->mem_resource[mem]);
 892                         mem++;
 893                         break;
 894                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 895                         pnp_dbg("Encode ext irq");
 896                         pnpacpi_encode_ext_irq(resource,
 897                                 &res_table->irq_resource[irq]);
 898                         irq++;
 899                         break;
 900                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 901                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 902                 case ACPI_RESOURCE_TYPE_VENDOR:
 903                 case ACPI_RESOURCE_TYPE_END_TAG:
 904                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 905                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 906                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 907                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 908                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 909                 default: /* other type */
 910                         pnp_warn("unknown resource type %d", resource->type);
 911                         return -EINVAL;
 912                 }
 913                 resource++;
 914                 i++;
 915         }
 916         return 0;
 917 }