err.no Git - linux-2.6/blob - 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 <linux/pnp.h>
  25 #include "../base.h"
  26 #include "pnpacpi.h"
  27
  28 #ifdef CONFIG_IA64
  29 #define valid_IRQ(i) (1)
  30 #else
  31 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  32 #endif
  33
  34 /*
  35  * Allocated Resources
  36  */
  37 static int irq_flags(int triggering, int polarity, int shareable)
  38 {
  39         int flags;
  40
  41         if (triggering == ACPI_LEVEL_SENSITIVE) {
  42                 if (polarity == ACPI_ACTIVE_LOW)
  43                         flags = IORESOURCE_IRQ_LOWLEVEL;
  44                 else
  45                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  46         } else {
  47                 if (polarity == ACPI_ACTIVE_LOW)
  48                         flags = IORESOURCE_IRQ_LOWEDGE;
  49                 else
  50                         flags = IORESOURCE_IRQ_HIGHEDGE;
  51         }
  52
  53         if (shareable == ACPI_SHARED)
  54                 flags |= IORESOURCE_IRQ_SHAREABLE;
  55
  56         return flags;
  57 }
  58
  59 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
  60                              int *polarity, int *shareable)
  61 {
  62         switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
  63                          IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
  64         case IORESOURCE_IRQ_LOWLEVEL:
  65                 *triggering = ACPI_LEVEL_SENSITIVE;
  66                 *polarity = ACPI_ACTIVE_LOW;
  67                 break;
  68         case IORESOURCE_IRQ_HIGHLEVEL:
  69                 *triggering = ACPI_LEVEL_SENSITIVE;
  70                 *polarity = ACPI_ACTIVE_HIGH;
  71                 break;
  72         case IORESOURCE_IRQ_LOWEDGE:
  73                 *triggering = ACPI_EDGE_SENSITIVE;
  74                 *polarity = ACPI_ACTIVE_LOW;
  75                 break;
  76         case IORESOURCE_IRQ_HIGHEDGE:
  77                 *triggering = ACPI_EDGE_SENSITIVE;
  78                 *polarity = ACPI_ACTIVE_HIGH;
  79                 break;
  80         default:
  81                 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
  82                         flags);
  83                 *triggering = ACPI_EDGE_SENSITIVE;
  84                 *polarity = ACPI_ACTIVE_HIGH;
  85                 break;
  86         }
  87
  88         if (flags & IORESOURCE_IRQ_SHAREABLE)
  89                 *shareable = ACPI_SHARED;
  90         else
  91                 *shareable = ACPI_EXCLUSIVE;
  92 }
  93
  94 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  95                                                 u32 gsi, int triggering,
  96                                                 int polarity, int shareable)
  97 {
  98         int irq, flags;
  99         int p, t;
 100
 101         if (!valid_IRQ(gsi)) {
 102                 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
 103                 return;
 104         }
 105
 106         /*
 107          * in IO-APIC mode, use overrided attribute. Two reasons:
 108          * 1. BIOS bug in DSDT
 109          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 110          */
 111         if (!acpi_get_override_irq(gsi, &t, &p)) {
 112                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 113                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 114
 115                 if (triggering != t || polarity != p) {
 116                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 117                                 gsi, t ? "edge":"level", p ? "low":"high");
 118                         triggering = t;
 119                         polarity = p;
 120                 }
 121         }
 122
 123         flags = irq_flags(triggering, polarity, shareable);
 124         irq = acpi_register_gsi(gsi, triggering, polarity);
 125         if (irq >= 0)
 126                 pcibios_penalize_isa_irq(irq, 1);
 127         else
 128                 flags |= IORESOURCE_DISABLED;
 129
 130         pnp_add_irq_resource(dev, irq, flags);
 131 }
 132
 133 static int dma_flags(int type, int bus_master, int transfer)
 134 {
 135         int flags = 0;
 136
 137         if (bus_master)
 138                 flags |= IORESOURCE_DMA_MASTER;
 139         switch (type) {
 140         case ACPI_COMPATIBILITY:
 141                 flags |= IORESOURCE_DMA_COMPATIBLE;
 142                 break;
 143         case ACPI_TYPE_A:
 144                 flags |= IORESOURCE_DMA_TYPEA;
 145                 break;
 146         case ACPI_TYPE_B:
 147                 flags |= IORESOURCE_DMA_TYPEB;
 148                 break;
 149         case ACPI_TYPE_F:
 150                 flags |= IORESOURCE_DMA_TYPEF;
 151                 break;
 152         default:
 153                 /* Set a default value ? */
 154                 flags |= IORESOURCE_DMA_COMPATIBLE;
 155                 pnp_err("Invalid DMA type");
 156         }
 157         switch (transfer) {
 158         case ACPI_TRANSFER_8:
 159                 flags |= IORESOURCE_DMA_8BIT;
 160                 break;
 161         case ACPI_TRANSFER_8_16:
 162                 flags |= IORESOURCE_DMA_8AND16BIT;
 163                 break;
 164         case ACPI_TRANSFER_16:
 165                 flags |= IORESOURCE_DMA_16BIT;
 166                 break;
 167         default:
 168                 /* Set a default value ? */
 169                 flags |= IORESOURCE_DMA_8AND16BIT;
 170                 pnp_err("Invalid DMA transfer type");
 171         }
 172
 173         return flags;
 174 }
 175
 176 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 177                                                u64 len, int io_decode)
 178 {
 179         int flags = 0;
 180         u64 end = start + len - 1;
 181
 182         if (io_decode == ACPI_DECODE_16)
 183                 flags |= IORESOURCE_IO_16BIT_ADDR;
 184         if (len == 0 || end >= 0x10003)
 185                 flags |= IORESOURCE_DISABLED;
 186
 187         pnp_add_io_resource(dev, start, end, flags);
 188 }
 189
 190 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 191                                                 u64 start, u64 len,
 192                                                 int write_protect)
 193 {
 194         int flags = 0;
 195         u64 end = start + len - 1;
 196
 197         if (len == 0)
 198                 flags |= IORESOURCE_DISABLED;
 199         if (write_protect == ACPI_READ_WRITE_MEMORY)
 200                 flags |= IORESOURCE_MEM_WRITEABLE;
 201
 202         pnp_add_mem_resource(dev, start, end, flags);
 203 }
 204
 205 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 206                                                   struct acpi_resource *res)
 207 {
 208         struct acpi_resource_address64 addr, *p = &addr;
 209         acpi_status status;
 210
 211         status = acpi_resource_to_address64(res, p);
 212         if (!ACPI_SUCCESS(status)) {
 213                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 214                          res->type);
 215                 return;
 216         }
 217
 218         if (p->producer_consumer == ACPI_PRODUCER)
 219                 return;
 220
 221         if (p->resource_type == ACPI_MEMORY_RANGE)
 222                 pnpacpi_parse_allocated_memresource(dev,
 223                         p->minimum, p->address_length,
 224                         p->info.mem.write_protect);
 225         else if (p->resource_type == ACPI_IO_RANGE)
 226                 pnpacpi_parse_allocated_ioresource(dev,
 227                         p->minimum, p->address_length,
 228                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 229                                 ACPI_DECODE_16);
 230 }
 231
 232 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 233                                               void *data)
 234 {
 235         struct pnp_dev *dev = data;
 236         struct acpi_resource_irq *irq;
 237         struct acpi_resource_dma *dma;
 238         struct acpi_resource_io *io;
 239         struct acpi_resource_fixed_io *fixed_io;
 240         struct acpi_resource_memory24 *memory24;
 241         struct acpi_resource_memory32 *memory32;
 242         struct acpi_resource_fixed_memory32 *fixed_memory32;
 243         struct acpi_resource_extended_irq *extended_irq;
 244         int i, flags;
 245
 246         switch (res->type) {
 247         case ACPI_RESOURCE_TYPE_IRQ:
 248                 /*
 249                  * Per spec, only one interrupt per descriptor is allowed in
 250                  * _CRS, but some firmware violates this, so parse them all.
 251                  */
 252                 irq = &res->data.irq;
 253                 if (irq->interrupt_count == 0)
 254                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 255                 else {
 256                         for (i = 0; i < irq->interrupt_count; i++) {
 257                                 pnpacpi_parse_allocated_irqresource(dev,
 258                                         irq->interrupts[i],
 259                                         irq->triggering,
 260                                         irq->polarity,
 261                                     irq->sharable);
 262                         }
 263
 264                         /*
 265                          * The IRQ encoder puts a single interrupt in each
 266                          * descriptor, so if a _CRS descriptor has more than
 267                          * one interrupt, we won't be able to re-encode it.
 268                          */
 269                         if (pnp_can_write(dev) && irq->interrupt_count > 1) {
 270                                 dev_warn(&dev->dev, "multiple interrupts in "
 271                                          "_CRS descriptor; configuration can't "
 272                                          "be changed\n");
 273                                 dev->capabilities &= ~PNP_WRITE;
 274                         }
 275                 }
 276                 break;
 277
 278         case ACPI_RESOURCE_TYPE_DMA:
 279                 dma = &res->data.dma;
 280                 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
 281                         flags = dma_flags(dma->type, dma->bus_master,
 282                                           dma->transfer);
 283                 else
 284                         flags = IORESOURCE_DISABLED;
 285                 pnp_add_dma_resource(dev, dma->channels[0], flags);
 286                 break;
 287
 288         case ACPI_RESOURCE_TYPE_IO:
 289                 io = &res->data.io;
 290                 pnpacpi_parse_allocated_ioresource(dev,
 291                         io->minimum,
 292                         io->address_length,
 293                         io->io_decode);
 294                 break;
 295
 296         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 297         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 298                 break;
 299
 300         case ACPI_RESOURCE_TYPE_FIXED_IO:
 301                 fixed_io = &res->data.fixed_io;
 302                 pnpacpi_parse_allocated_ioresource(dev,
 303                         fixed_io->address,
 304                         fixed_io->address_length,
 305                         ACPI_DECODE_10);
 306                 break;
 307
 308         case ACPI_RESOURCE_TYPE_VENDOR:
 309                 break;
 310
 311         case ACPI_RESOURCE_TYPE_END_TAG:
 312                 break;
 313
 314         case ACPI_RESOURCE_TYPE_MEMORY24:
 315                 memory24 = &res->data.memory24;
 316                 pnpacpi_parse_allocated_memresource(dev,
 317                         memory24->minimum,
 318                         memory24->address_length,
 319                         memory24->write_protect);
 320                 break;
 321         case ACPI_RESOURCE_TYPE_MEMORY32:
 322                 memory32 = &res->data.memory32;
 323                 pnpacpi_parse_allocated_memresource(dev,
 324                         memory32->minimum,
 325                         memory32->address_length,
 326                         memory32->write_protect);
 327                 break;
 328         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 329                 fixed_memory32 = &res->data.fixed_memory32;
 330                 pnpacpi_parse_allocated_memresource(dev,
 331                         fixed_memory32->address,
 332                         fixed_memory32->address_length,
 333                         fixed_memory32->write_protect);
 334                 break;
 335         case ACPI_RESOURCE_TYPE_ADDRESS16:
 336         case ACPI_RESOURCE_TYPE_ADDRESS32:
 337         case ACPI_RESOURCE_TYPE_ADDRESS64:
 338                 pnpacpi_parse_allocated_address_space(dev, res);
 339                 break;
 340
 341         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 342                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 343                         return AE_OK;
 344                 break;
 345
 346         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 347                 extended_irq = &res->data.extended_irq;
 348                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 349                         return AE_OK;
 350
 351                 if (extended_irq->interrupt_count == 0)
 352                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 353                 else {
 354                         for (i = 0; i < extended_irq->interrupt_count; i++) {
 355                                 pnpacpi_parse_allocated_irqresource(dev,
 356                                         extended_irq->interrupts[i],
 357                                         extended_irq->triggering,
 358                                         extended_irq->polarity,
 359                                         extended_irq->sharable);
 360                         }
 361
 362                         /*
 363                          * The IRQ encoder puts a single interrupt in each
 364                          * descriptor, so if a _CRS descriptor has more than
 365                          * one interrupt, we won't be able to re-encode it.
 366                          */
 367                         if (pnp_can_write(dev) &&
 368                             extended_irq->interrupt_count > 1) {
 369                                 dev_warn(&dev->dev, "multiple interrupts in "
 370                                          "_CRS descriptor; configuration can't "
 371                                          "be changed\n");
 372                                 dev->capabilities &= ~PNP_WRITE;
 373                         }
 374                 }
 375                 break;
 376
 377         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 378                 break;
 379
 380         default:
 381                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 382                          res->type);
 383                 return AE_ERROR;
 384         }
 385
 386         return AE_OK;
 387 }
 388
 389 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 390 {
 391         acpi_handle handle = dev->data;
 392         acpi_status status;
 393
 394         dev_dbg(&dev->dev, "parse allocated resources\n");
 395
 396         pnp_init_resources(dev);
 397
 398         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 399                                      pnpacpi_allocated_resource, dev);
 400
 401         if (ACPI_FAILURE(status)) {
 402                 if (status != AE_NOT_FOUND)
 403                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 404                 return -EPERM;
 405         }
 406         return 0;
 407 }
 408
 409 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 410                                             struct pnp_option *option,
 411                                             struct acpi_resource_dma *p)
 412 {
 413         int i;
 414         unsigned char map = 0, flags;
 415
 416         if (p->channel_count == 0)
 417                 return;
 418
 419         for (i = 0; i < p->channel_count; i++)
 420                 map |= 1 << p->channels[i];
 421
 422         flags = dma_flags(p->type, p->bus_master, p->transfer);
 423         pnp_register_dma_resource(dev, option, map, flags);
 424 }
 425
 426 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 427                                             struct pnp_option *option,
 428                                             struct acpi_resource_irq *p)
 429 {
 430         int i;
 431         pnp_irq_mask_t map;
 432         unsigned char flags;
 433
 434         if (p->interrupt_count == 0)
 435                 return;
 436
 437         bitmap_zero(map.bits, PNP_IRQ_NR);
 438         for (i = 0; i < p->interrupt_count; i++)
 439                 if (p->interrupts[i])
 440                         __set_bit(p->interrupts[i], map.bits);
 441
 442         flags = irq_flags(p->triggering, p->polarity, p->sharable);
 443         pnp_register_irq_resource(dev, option, &map, flags);
 444 }
 445
 446 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 447                                                 struct pnp_option *option,
 448                                         struct acpi_resource_extended_irq *p)
 449 {
 450         int i;
 451         pnp_irq_mask_t map;
 452         unsigned char flags;
 453
 454         if (p->interrupt_count == 0)
 455                 return;
 456
 457         bitmap_zero(map.bits, PNP_IRQ_NR);
 458         for (i = 0; i < p->interrupt_count; i++) {
 459                 if (p->interrupts[i]) {
 460                         if (p->interrupts[i] < PNP_IRQ_NR)
 461                                 __set_bit(p->interrupts[i], map.bits);
 462                         else
 463                                 dev_err(&dev->dev, "ignoring IRQ %d option "
 464                                         "(too large for %d entry bitmap)\n",
 465                                         p->interrupts[i], PNP_IRQ_NR);
 466                 }
 467         }
 468
 469         flags = irq_flags(p->triggering, p->polarity, p->sharable);
 470         pnp_register_irq_resource(dev, option, &map, flags);
 471 }
 472
 473 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 474                                              struct pnp_option *option,
 475                                              struct acpi_resource_io *io)
 476 {
 477         unsigned char flags = 0;
 478
 479         if (io->address_length == 0)
 480                 return;
 481
 482         if (io->io_decode == ACPI_DECODE_16)
 483                 flags = IORESOURCE_IO_16BIT_ADDR;
 484         pnp_register_port_resource(dev, option, io->minimum, io->maximum,
 485                                    io->alignment, io->address_length, flags);
 486 }
 487
 488 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 489                                                    struct pnp_option *option,
 490                                         struct acpi_resource_fixed_io *io)
 491 {
 492         if (io->address_length == 0)
 493                 return;
 494
 495         pnp_register_port_resource(dev, option, io->address, io->address, 0,
 496                                    io->address_length, IORESOURCE_IO_FIXED);
 497 }
 498
 499 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 500                                               struct pnp_option *option,
 501                                               struct acpi_resource_memory24 *p)
 502 {
 503         unsigned char flags = 0;
 504
 505         if (p->address_length == 0)
 506                 return;
 507
 508         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 509                 flags = IORESOURCE_MEM_WRITEABLE;
 510         pnp_register_mem_resource(dev, option, p->minimum, p->maximum,
 511                                   p->alignment, p->address_length, flags);
 512 }
 513
 514 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 515                                               struct pnp_option *option,
 516                                               struct acpi_resource_memory32 *p)
 517 {
 518         unsigned char flags = 0;
 519
 520         if (p->address_length == 0)
 521                 return;
 522
 523         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 524                 flags = IORESOURCE_MEM_WRITEABLE;
 525         pnp_register_mem_resource(dev, option, p->minimum, p->maximum,
 526                                   p->alignment, p->address_length, flags);
 527 }
 528
 529 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 530                                                     struct pnp_option *option,
 531                                         struct acpi_resource_fixed_memory32 *p)
 532 {
 533         unsigned char flags = 0;
 534
 535         if (p->address_length == 0)
 536                 return;
 537
 538         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 539                 flags = IORESOURCE_MEM_WRITEABLE;
 540         pnp_register_mem_resource(dev, option, p->address, p->address,
 541                                   0, p->address_length, flags);
 542 }
 543
 544 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 545                                                 struct pnp_option *option,
 546                                                 struct acpi_resource *r)
 547 {
 548         struct acpi_resource_address64 addr, *p = &addr;
 549         acpi_status status;
 550         unsigned char flags = 0;
 551
 552         status = acpi_resource_to_address64(r, p);
 553         if (!ACPI_SUCCESS(status)) {
 554                 pnp_warn("PnPACPI: failed to convert resource type %d",
 555                          r->type);
 556                 return;
 557         }
 558
 559         if (p->address_length == 0)
 560                 return;
 561
 562         if (p->resource_type == ACPI_MEMORY_RANGE) {
 563                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
 564                         flags = IORESOURCE_MEM_WRITEABLE;
 565                 pnp_register_mem_resource(dev, option, p->minimum, p->minimum,
 566                                           0, p->address_length, flags);
 567         } else if (p->resource_type == ACPI_IO_RANGE)
 568                 pnp_register_port_resource(dev, option, p->minimum, p->minimum,
 569                                            0, p->address_length,
 570                                            IORESOURCE_IO_FIXED);
 571 }
 572
 573 struct acpipnp_parse_option_s {
 574         struct pnp_option *option;
 575         struct pnp_option *option_independent;
 576         struct pnp_dev *dev;
 577 };
 578
 579 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 580                                                   void *data)
 581 {
 582         int priority = 0;
 583         struct acpipnp_parse_option_s *parse_data = data;
 584         struct pnp_dev *dev = parse_data->dev;
 585         struct pnp_option *option = parse_data->option;
 586
 587         switch (res->type) {
 588         case ACPI_RESOURCE_TYPE_IRQ:
 589                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 590                 break;
 591
 592         case ACPI_RESOURCE_TYPE_DMA:
 593                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 594                 break;
 595
 596         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 597                 switch (res->data.start_dpf.compatibility_priority) {
 598                 case ACPI_GOOD_CONFIGURATION:
 599                         priority = PNP_RES_PRIORITY_PREFERRED;
 600                         break;
 601
 602                 case ACPI_ACCEPTABLE_CONFIGURATION:
 603                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 604                         break;
 605
 606                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 607                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 608                         break;
 609                 default:
 610                         priority = PNP_RES_PRIORITY_INVALID;
 611                         break;
 612                 }
 613                 /* TBD: Consider performance/robustness bits */
 614                 option = pnp_register_dependent_option(dev, priority);
 615                 if (!option)
 616                         return AE_ERROR;
 617                 parse_data->option = option;
 618                 break;
 619
 620         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 621                 /*only one EndDependentFn is allowed */
 622                 if (!parse_data->option_independent) {
 623                         dev_warn(&dev->dev, "more than one EndDependentFn "
 624                                  "in _PRS\n");
 625                         return AE_ERROR;
 626                 }
 627                 parse_data->option = parse_data->option_independent;
 628                 parse_data->option_independent = NULL;
 629                 dev_dbg(&dev->dev, "end dependent options\n");
 630                 break;
 631
 632         case ACPI_RESOURCE_TYPE_IO:
 633                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 634                 break;
 635
 636         case ACPI_RESOURCE_TYPE_FIXED_IO:
 637                 pnpacpi_parse_fixed_port_option(dev, option,
 638                                                 &res->data.fixed_io);
 639                 break;
 640
 641         case ACPI_RESOURCE_TYPE_VENDOR:
 642         case ACPI_RESOURCE_TYPE_END_TAG:
 643                 break;
 644
 645         case ACPI_RESOURCE_TYPE_MEMORY24:
 646                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 647                 break;
 648
 649         case ACPI_RESOURCE_TYPE_MEMORY32:
 650                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 651                 break;
 652
 653         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 654                 pnpacpi_parse_fixed_mem32_option(dev, option,
 655                                                  &res->data.fixed_memory32);
 656                 break;
 657
 658         case ACPI_RESOURCE_TYPE_ADDRESS16:
 659         case ACPI_RESOURCE_TYPE_ADDRESS32:
 660         case ACPI_RESOURCE_TYPE_ADDRESS64:
 661                 pnpacpi_parse_address_option(dev, option, res);
 662                 break;
 663
 664         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 665                 break;
 666
 667         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 668                 pnpacpi_parse_ext_irq_option(dev, option,
 669                                              &res->data.extended_irq);
 670                 break;
 671
 672         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 673                 break;
 674
 675         default:
 676                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 677                          res->type);
 678                 return AE_ERROR;
 679         }
 680
 681         return AE_OK;
 682 }
 683
 684 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 685 {
 686         acpi_handle handle = dev->data;
 687         acpi_status status;
 688         struct acpipnp_parse_option_s parse_data;
 689
 690         dev_dbg(&dev->dev, "parse resource options\n");
 691
 692         parse_data.option = pnp_register_independent_option(dev);
 693         if (!parse_data.option)
 694                 return -ENOMEM;
 695
 696         parse_data.option_independent = parse_data.option;
 697         parse_data.dev = dev;
 698         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 699                                      pnpacpi_option_resource, &parse_data);
 700
 701         if (ACPI_FAILURE(status)) {
 702                 if (status != AE_NOT_FOUND)
 703                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 704                 return -EPERM;
 705         }
 706         return 0;
 707 }
 708
 709 static int pnpacpi_supported_resource(struct acpi_resource *res)
 710 {
 711         switch (res->type) {
 712         case ACPI_RESOURCE_TYPE_IRQ:
 713         case ACPI_RESOURCE_TYPE_DMA:
 714         case ACPI_RESOURCE_TYPE_IO:
 715         case ACPI_RESOURCE_TYPE_FIXED_IO:
 716         case ACPI_RESOURCE_TYPE_MEMORY24:
 717         case ACPI_RESOURCE_TYPE_MEMORY32:
 718         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 719         case ACPI_RESOURCE_TYPE_ADDRESS16:
 720         case ACPI_RESOURCE_TYPE_ADDRESS32:
 721         case ACPI_RESOURCE_TYPE_ADDRESS64:
 722         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 723                 return 1;
 724         }
 725         return 0;
 726 }
 727
 728 /*
 729  * Set resource
 730  */
 731 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 732                                            void *data)
 733 {
 734         int *res_cnt = data;
 735
 736         if (pnpacpi_supported_resource(res))
 737                 (*res_cnt)++;
 738         return AE_OK;
 739 }
 740
 741 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 742 {
 743         struct acpi_resource **resource = data;
 744
 745         if (pnpacpi_supported_resource(res)) {
 746                 (*resource)->type = res->type;
 747                 (*resource)->length = sizeof(struct acpi_resource);
 748                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
 749                         (*resource)->data.irq.descriptor_length =
 750                                         res->data.irq.descriptor_length;
 751                 (*resource)++;
 752         }
 753
 754         return AE_OK;
 755 }
 756
 757 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 758                                     struct acpi_buffer *buffer)
 759 {
 760         acpi_handle handle = dev->data;
 761         struct acpi_resource *resource;
 762         int res_cnt = 0;
 763         acpi_status status;
 764
 765         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 766                                      pnpacpi_count_resources, &res_cnt);
 767         if (ACPI_FAILURE(status)) {
 768                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 769                 return -EINVAL;
 770         }
 771         if (!res_cnt)
 772                 return -EINVAL;
 773         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 774         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 775         if (!buffer->pointer)
 776                 return -ENOMEM;
 777
 778         resource = (struct acpi_resource *)buffer->pointer;
 779         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 780                                      pnpacpi_type_resources, &resource);
 781         if (ACPI_FAILURE(status)) {
 782                 kfree(buffer->pointer);
 783                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 784                 return -EINVAL;
 785         }
 786         /* resource will pointer the end resource now */
 787         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 788
 789         return 0;
 790 }
 791
 792 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 793                                struct acpi_resource *resource,
 794                                struct resource *p)
 795 {
 796         struct acpi_resource_irq *irq = &resource->data.irq;
 797         int triggering, polarity, shareable;
 798
 799         if (!pnp_resource_enabled(p)) {
 800                 irq->interrupt_count = 0;
 801                 dev_dbg(&dev->dev, "  encode irq (%s)\n",
 802                         p ? "disabled" : "missing");
 803                 return;
 804         }
 805
 806         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 807         irq->triggering = triggering;
 808         irq->polarity = polarity;
 809         irq->sharable = shareable;
 810         irq->interrupt_count = 1;
 811         irq->interrupts[0] = p->start;
 812
 813         dev_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
 814                 (int) p->start,
 815                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 816                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 817                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
 818                 irq->descriptor_length);
 819 }
 820
 821 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 822                                    struct acpi_resource *resource,
 823                                    struct resource *p)
 824 {
 825         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 826         int triggering, polarity, shareable;
 827
 828         if (!pnp_resource_enabled(p)) {
 829                 extended_irq->interrupt_count = 0;
 830                 dev_dbg(&dev->dev, "  encode extended irq (%s)\n",
 831                         p ? "disabled" : "missing");
 832                 return;
 833         }
 834
 835         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 836         extended_irq->producer_consumer = ACPI_CONSUMER;
 837         extended_irq->triggering = triggering;
 838         extended_irq->polarity = polarity;
 839         extended_irq->sharable = shareable;
 840         extended_irq->interrupt_count = 1;
 841         extended_irq->interrupts[0] = p->start;
 842
 843         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 844                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 845                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 846                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 847 }
 848
 849 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 850                                struct acpi_resource *resource,
 851                                struct resource *p)
 852 {
 853         struct acpi_resource_dma *dma = &resource->data.dma;
 854
 855         if (!pnp_resource_enabled(p)) {
 856                 dma->channel_count = 0;
 857                 dev_dbg(&dev->dev, "  encode dma (%s)\n",
 858                         p ? "disabled" : "missing");
 859                 return;
 860         }
 861
 862         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 863         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 864         case IORESOURCE_DMA_TYPEA:
 865                 dma->type = ACPI_TYPE_A;
 866                 break;
 867         case IORESOURCE_DMA_TYPEB:
 868                 dma->type = ACPI_TYPE_B;
 869                 break;
 870         case IORESOURCE_DMA_TYPEF:
 871                 dma->type = ACPI_TYPE_F;
 872                 break;
 873         default:
 874                 dma->type = ACPI_COMPATIBILITY;
 875         }
 876
 877         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 878         case IORESOURCE_DMA_8BIT:
 879                 dma->transfer = ACPI_TRANSFER_8;
 880                 break;
 881         case IORESOURCE_DMA_8AND16BIT:
 882                 dma->transfer = ACPI_TRANSFER_8_16;
 883                 break;
 884         default:
 885                 dma->transfer = ACPI_TRANSFER_16;
 886         }
 887
 888         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 889         dma->channel_count = 1;
 890         dma->channels[0] = p->start;
 891
 892         dev_dbg(&dev->dev, "  encode dma %d "
 893                 "type %#x transfer %#x master %d\n",
 894                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 895 }
 896
 897 static void pnpacpi_encode_io(struct pnp_dev *dev,
 898                               struct acpi_resource *resource,
 899                               struct resource *p)
 900 {
 901         struct acpi_resource_io *io = &resource->data.io;
 902
 903         if (pnp_resource_enabled(p)) {
 904                 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
 905                 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
 906                     ACPI_DECODE_16 : ACPI_DECODE_10;
 907                 io->minimum = p->start;
 908                 io->maximum = p->end;
 909                 io->alignment = 0;      /* Correct? */
 910                 io->address_length = p->end - p->start + 1;
 911         } else {
 912                 io->minimum = 0;
 913                 io->address_length = 0;
 914         }
 915
 916         dev_dbg(&dev->dev, "  encode io %#x-%#x decode %#x\n", io->minimum,
 917                 io->minimum + io->address_length - 1, io->io_decode);
 918 }
 919
 920 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 921                                     struct acpi_resource *resource,
 922                                     struct resource *p)
 923 {
 924         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 925
 926         if (pnp_resource_enabled(p)) {
 927                 fixed_io->address = p->start;
 928                 fixed_io->address_length = p->end - p->start + 1;
 929         } else {
 930                 fixed_io->address = 0;
 931                 fixed_io->address_length = 0;
 932         }
 933
 934         dev_dbg(&dev->dev, "  encode fixed_io %#x-%#x\n", fixed_io->address,
 935                 fixed_io->address + fixed_io->address_length - 1);
 936 }
 937
 938 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 939                                  struct acpi_resource *resource,
 940                                  struct resource *p)
 941 {
 942         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 943
 944         if (pnp_resource_enabled(p)) {
 945                 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
 946                 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
 947                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 948                 memory24->minimum = p->start;
 949                 memory24->maximum = p->end;
 950                 memory24->alignment = 0;
 951                 memory24->address_length = p->end - p->start + 1;
 952         } else {
 953                 memory24->minimum = 0;
 954                 memory24->address_length = 0;
 955         }
 956
 957         dev_dbg(&dev->dev, "  encode mem24 %#x-%#x write_protect %#x\n",
 958                 memory24->minimum,
 959                 memory24->minimum + memory24->address_length - 1,
 960                 memory24->write_protect);
 961 }
 962
 963 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 964                                  struct acpi_resource *resource,
 965                                  struct resource *p)
 966 {
 967         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 968
 969         if (pnp_resource_enabled(p)) {
 970                 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
 971                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 972                 memory32->minimum = p->start;
 973                 memory32->maximum = p->end;
 974                 memory32->alignment = 0;
 975                 memory32->address_length = p->end - p->start + 1;
 976         } else {
 977                 memory32->minimum = 0;
 978                 memory32->alignment = 0;
 979         }
 980
 981         dev_dbg(&dev->dev, "  encode mem32 %#x-%#x write_protect %#x\n",
 982                 memory32->minimum,
 983                 memory32->minimum + memory32->address_length - 1,
 984                 memory32->write_protect);
 985 }
 986
 987 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 988                                        struct acpi_resource *resource,
 989                                        struct resource *p)
 990 {
 991         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 992
 993         if (pnp_resource_enabled(p)) {
 994                 fixed_memory32->write_protect =
 995                     p->flags & IORESOURCE_MEM_WRITEABLE ?
 996                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 997                 fixed_memory32->address = p->start;
 998                 fixed_memory32->address_length = p->end - p->start + 1;
 999         } else {
1000                 fixed_memory32->address = 0;
1001                 fixed_memory32->address_length = 0;
1002         }
1003
1004         dev_dbg(&dev->dev, "  encode fixed_mem32 %#x-%#x write_protect %#x\n",
1005                 fixed_memory32->address,
1006                 fixed_memory32->address + fixed_memory32->address_length - 1,
1007                 fixed_memory32->write_protect);
1008 }
1009
1010 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1011 {
1012         int i = 0;
1013         /* pnpacpi_build_resource_template allocates extra mem */
1014         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1015         struct acpi_resource *resource = buffer->pointer;
1016         int port = 0, irq = 0, dma = 0, mem = 0;
1017
1018         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1019         while (i < res_cnt) {
1020                 switch (resource->type) {
1021                 case ACPI_RESOURCE_TYPE_IRQ:
1022                         pnpacpi_encode_irq(dev, resource,
1023                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1024                         irq++;
1025                         break;
1026
1027                 case ACPI_RESOURCE_TYPE_DMA:
1028                         pnpacpi_encode_dma(dev, resource,
1029                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1030                         dma++;
1031                         break;
1032                 case ACPI_RESOURCE_TYPE_IO:
1033                         pnpacpi_encode_io(dev, resource,
1034                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1035                         port++;
1036                         break;
1037                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1038                         pnpacpi_encode_fixed_io(dev, resource,
1039                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1040                         port++;
1041                         break;
1042                 case ACPI_RESOURCE_TYPE_MEMORY24:
1043                         pnpacpi_encode_mem24(dev, resource,
1044                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1045                         mem++;
1046                         break;
1047                 case ACPI_RESOURCE_TYPE_MEMORY32:
1048                         pnpacpi_encode_mem32(dev, resource,
1049                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1050                         mem++;
1051                         break;
1052                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1053                         pnpacpi_encode_fixed_mem32(dev, resource,
1054                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1055                         mem++;
1056                         break;
1057                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1058                         pnpacpi_encode_ext_irq(dev, resource,
1059                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1060                         irq++;
1061                         break;
1062                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1063                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1064                 case ACPI_RESOURCE_TYPE_VENDOR:
1065                 case ACPI_RESOURCE_TYPE_END_TAG:
1066                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1067                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1068                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1069                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1070                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1071                 default:        /* other type */
1072                         dev_warn(&dev->dev, "can't encode unknown resource "
1073                                  "type %d\n", resource->type);
1074                         return -EINVAL;
1075                 }
1076                 resource++;
1077                 i++;
1078         }
1079         return 0;
1080 }