git.oblomov.eu 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 "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         if (triggering == ACPI_LEVEL_SENSITIVE) {
  38                 if (polarity == ACPI_ACTIVE_LOW)
  39                         return IORESOURCE_IRQ_LOWLEVEL;
  40                 else
  41                         return IORESOURCE_IRQ_HIGHLEVEL;
  42         } else {
  43                 if (polarity == ACPI_ACTIVE_LOW)
  44                         return IORESOURCE_IRQ_LOWEDGE;
  45                 else
  46                         return IORESOURCE_IRQ_HIGHEDGE;
  47         }
  48 }
  49
  50 static void decode_irq_flags(int flag, int *triggering, int *polarity)
  51 {
  52         switch (flag) {
  53         case IORESOURCE_IRQ_LOWLEVEL:
  54                 *triggering = ACPI_LEVEL_SENSITIVE;
  55                 *polarity = ACPI_ACTIVE_LOW;
  56                 break;
  57         case IORESOURCE_IRQ_HIGHLEVEL:
  58                 *triggering = ACPI_LEVEL_SENSITIVE;
  59                 *polarity = ACPI_ACTIVE_HIGH;
  60                 break;
  61         case IORESOURCE_IRQ_LOWEDGE:
  62                 *triggering = ACPI_EDGE_SENSITIVE;
  63                 *polarity = ACPI_ACTIVE_LOW;
  64                 break;
  65         case IORESOURCE_IRQ_HIGHEDGE:
  66                 *triggering = ACPI_EDGE_SENSITIVE;
  67                 *polarity = ACPI_ACTIVE_HIGH;
  68                 break;
  69         }
  70 }
  71
  72 static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
  73                                                 u32 gsi, int triggering,
  74                                                 int polarity, int shareable)
  75 {
  76         int i = 0;
  77         int irq;
  78
  79         if (!valid_IRQ(gsi))
  80                 return;
  81
  82         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
  83                i < PNP_MAX_IRQ)
  84                 i++;
  85         if (i >= PNP_MAX_IRQ)
  86                 return;
  87
  88         res->irq_resource[i].flags = IORESOURCE_IRQ;    // Also clears _UNSET flag
  89         res->irq_resource[i].flags |= irq_flags(triggering, polarity);
  90         irq = acpi_register_gsi(gsi, triggering, polarity);
  91         if (irq < 0) {
  92                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
  93                 return;
  94         }
  95
  96         if (shareable)
  97                 res->irq_resource[i].flags |= IORESOURCE_IRQ_SHAREABLE;
  98
  99         res->irq_resource[i].start = irq;
 100         res->irq_resource[i].end = irq;
 101         pcibios_penalize_isa_irq(irq, 1);
 102 }
 103
 104 static int dma_flags(int type, int bus_master, int transfer)
 105 {
 106         int flags = 0;
 107
 108         if (bus_master)
 109                 flags |= IORESOURCE_DMA_MASTER;
 110         switch (type) {
 111         case ACPI_COMPATIBILITY:
 112                 flags |= IORESOURCE_DMA_COMPATIBLE;
 113                 break;
 114         case ACPI_TYPE_A:
 115                 flags |= IORESOURCE_DMA_TYPEA;
 116                 break;
 117         case ACPI_TYPE_B:
 118                 flags |= IORESOURCE_DMA_TYPEB;
 119                 break;
 120         case ACPI_TYPE_F:
 121                 flags |= IORESOURCE_DMA_TYPEF;
 122                 break;
 123         default:
 124                 /* Set a default value ? */
 125                 flags |= IORESOURCE_DMA_COMPATIBLE;
 126                 pnp_err("Invalid DMA type");
 127         }
 128         switch (transfer) {
 129         case ACPI_TRANSFER_8:
 130                 flags |= IORESOURCE_DMA_8BIT;
 131                 break;
 132         case ACPI_TRANSFER_8_16:
 133                 flags |= IORESOURCE_DMA_8AND16BIT;
 134                 break;
 135         case ACPI_TRANSFER_16:
 136                 flags |= IORESOURCE_DMA_16BIT;
 137                 break;
 138         default:
 139                 /* Set a default value ? */
 140                 flags |= IORESOURCE_DMA_8AND16BIT;
 141                 pnp_err("Invalid DMA transfer type");
 142         }
 143
 144         return flags;
 145 }
 146
 147 static void pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table *res,
 148                                                 u32 dma, int type,
 149                                                 int bus_master, int transfer)
 150 {
 151         int i = 0;
 152
 153         while (i < PNP_MAX_DMA &&
 154                !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 155                 i++;
 156         if (i < PNP_MAX_DMA) {
 157                 res->dma_resource[i].flags = IORESOURCE_DMA;    // Also clears _UNSET flag
 158                 res->dma_resource[i].flags |=
 159                     dma_flags(type, bus_master, transfer);
 160                 if (dma == -1) {
 161                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 162                         return;
 163                 }
 164                 res->dma_resource[i].start = dma;
 165                 res->dma_resource[i].end = dma;
 166         }
 167 }
 168
 169 static void pnpacpi_parse_allocated_ioresource(struct pnp_resource_table *res,
 170                                                u64 io, u64 len, int io_decode)
 171 {
 172         int i = 0;
 173
 174         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 175                i < PNP_MAX_PORT)
 176                 i++;
 177         if (i < PNP_MAX_PORT) {
 178                 res->port_resource[i].flags = IORESOURCE_IO;    // Also clears _UNSET flag
 179                 if (io_decode == ACPI_DECODE_16)
 180                         res->port_resource[i].flags |= PNP_PORT_FLAG_16BITADDR;
 181                 if (len <= 0 || (io + len - 1) >= 0x10003) {
 182                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 183                         return;
 184                 }
 185                 res->port_resource[i].start = io;
 186                 res->port_resource[i].end = io + len - 1;
 187         }
 188 }
 189
 190 static void pnpacpi_parse_allocated_memresource(struct pnp_resource_table *res,
 191                                                 u64 mem, u64 len,
 192                                                 int write_protect)
 193 {
 194         int i = 0;
 195
 196         while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
 197                (i < PNP_MAX_MEM))
 198                 i++;
 199         if (i < PNP_MAX_MEM) {
 200                 res->mem_resource[i].flags = IORESOURCE_MEM;    // Also clears _UNSET flag
 201                 if (len <= 0) {
 202                         res->mem_resource[i].flags |= IORESOURCE_DISABLED;
 203                         return;
 204                 }
 205                 if (write_protect == ACPI_READ_WRITE_MEMORY)
 206                         res->mem_resource[i].flags |= IORESOURCE_MEM_WRITEABLE;
 207
 208                 res->mem_resource[i].start = mem;
 209                 res->mem_resource[i].end = mem + len - 1;
 210         }
 211 }
 212
 213 static void pnpacpi_parse_allocated_address_space(struct pnp_resource_table *res_table,
 214                                                   struct acpi_resource *res)
 215 {
 216         struct acpi_resource_address64 addr, *p = &addr;
 217         acpi_status status;
 218
 219         status = acpi_resource_to_address64(res, p);
 220         if (!ACPI_SUCCESS(status)) {
 221                 pnp_warn("PnPACPI: failed to convert resource type %d",
 222                          res->type);
 223                 return;
 224         }
 225
 226         if (p->producer_consumer == ACPI_PRODUCER)
 227                 return;
 228
 229         if (p->resource_type == ACPI_MEMORY_RANGE)
 230                 pnpacpi_parse_allocated_memresource(res_table,
 231                         p->minimum, p->address_length,
 232                         p->info.mem.write_protect);
 233         else if (p->resource_type == ACPI_IO_RANGE)
 234                 pnpacpi_parse_allocated_ioresource(res_table,
 235                         p->minimum, p->address_length,
 236                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 237                                 ACPI_DECODE_16);
 238 }
 239
 240 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 241                                               void *data)
 242 {
 243         struct pnp_resource_table *res_table = data;
 244         int i;
 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                 for (i = 0; i < res->data.irq.interrupt_count; i++) {
 253                         pnpacpi_parse_allocated_irqresource(res_table,
 254                                 res->data.irq.interrupts[i],
 255                                 res->data.irq.triggering,
 256                                 res->data.irq.polarity,
 257                                 res->data.irq.sharable);
 258                 }
 259                 break;
 260
 261         case ACPI_RESOURCE_TYPE_DMA:
 262                 if (res->data.dma.channel_count > 0)
 263                         pnpacpi_parse_allocated_dmaresource(res_table,
 264                                 res->data.dma.channels[0],
 265                                 res->data.dma.type,
 266                                 res->data.dma.bus_master,
 267                                 res->data.dma.transfer);
 268                 break;
 269
 270         case ACPI_RESOURCE_TYPE_IO:
 271                 pnpacpi_parse_allocated_ioresource(res_table,
 272                         res->data.io.minimum,
 273                         res->data.io.address_length,
 274                         res->data.io.io_decode);
 275                 break;
 276
 277         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 278         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 279                 break;
 280
 281         case ACPI_RESOURCE_TYPE_FIXED_IO:
 282                 pnpacpi_parse_allocated_ioresource(res_table,
 283                         res->data.fixed_io.address,
 284                         res->data.fixed_io.address_length,
 285                         ACPI_DECODE_10);
 286                 break;
 287
 288         case ACPI_RESOURCE_TYPE_VENDOR:
 289                 break;
 290
 291         case ACPI_RESOURCE_TYPE_END_TAG:
 292                 break;
 293
 294         case ACPI_RESOURCE_TYPE_MEMORY24:
 295                 pnpacpi_parse_allocated_memresource(res_table,
 296                         res->data.memory24.minimum,
 297                         res->data.memory24.address_length,
 298                         res->data.memory24.write_protect);
 299                 break;
 300         case ACPI_RESOURCE_TYPE_MEMORY32:
 301                 pnpacpi_parse_allocated_memresource(res_table,
 302                         res->data.memory32.minimum,
 303                         res->data.memory32.address_length,
 304                         res->data.memory32.write_protect);
 305                 break;
 306         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 307                 pnpacpi_parse_allocated_memresource(res_table,
 308                         res->data.fixed_memory32.address,
 309                         res->data.fixed_memory32.address_length,
 310                         res->data.fixed_memory32.write_protect);
 311                 break;
 312         case ACPI_RESOURCE_TYPE_ADDRESS16:
 313         case ACPI_RESOURCE_TYPE_ADDRESS32:
 314         case ACPI_RESOURCE_TYPE_ADDRESS64:
 315                 pnpacpi_parse_allocated_address_space(res_table, res);
 316                 break;
 317
 318         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 319                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 320                         return AE_OK;
 321                 break;
 322
 323         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 324                 if (res->data.extended_irq.producer_consumer == ACPI_PRODUCER)
 325                         return AE_OK;
 326
 327                 for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
 328                         pnpacpi_parse_allocated_irqresource(res_table,
 329                                 res->data.extended_irq.interrupts[i],
 330                                 res->data.extended_irq.triggering,
 331                                 res->data.extended_irq.polarity,
 332                                 res->data.extended_irq.sharable);
 333                 }
 334                 break;
 335
 336         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 337                 break;
 338
 339         default:
 340                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 341                 return AE_ERROR;
 342         }
 343
 344         return AE_OK;
 345 }
 346
 347 acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle,
 348                                              struct pnp_resource_table * res)
 349 {
 350         /* Blank the resource table values */
 351         pnp_init_resource_table(res);
 352
 353         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 354                                    pnpacpi_allocated_resource, res);
 355 }
 356
 357 static void pnpacpi_parse_dma_option(struct pnp_option *option,
 358                                      struct acpi_resource_dma *p)
 359 {
 360         int i;
 361         struct pnp_dma *dma;
 362
 363         if (p->channel_count == 0)
 364                 return;
 365         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 366         if (!dma)
 367                 return;
 368
 369         for (i = 0; i < p->channel_count; i++)
 370                 dma->map |= 1 << p->channels[i];
 371
 372         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 373
 374         pnp_register_dma_resource(option, dma);
 375 }
 376
 377 static void pnpacpi_parse_irq_option(struct pnp_option *option,
 378                                      struct acpi_resource_irq *p)
 379 {
 380         int i;
 381         struct pnp_irq *irq;
 382
 383         if (p->interrupt_count == 0)
 384                 return;
 385         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 386         if (!irq)
 387                 return;
 388
 389         for (i = 0; i < p->interrupt_count; i++)
 390                 if (p->interrupts[i])
 391                         __set_bit(p->interrupts[i], irq->map);
 392         irq->flags = irq_flags(p->triggering, p->polarity);
 393
 394         pnp_register_irq_resource(option, irq);
 395 }
 396
 397 static void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
 398                                          struct acpi_resource_extended_irq *p)
 399 {
 400         int i;
 401         struct pnp_irq *irq;
 402
 403         if (p->interrupt_count == 0)
 404                 return;
 405         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 406         if (!irq)
 407                 return;
 408
 409         for (i = 0; i < p->interrupt_count; i++)
 410                 if (p->interrupts[i])
 411                         __set_bit(p->interrupts[i], irq->map);
 412         irq->flags = irq_flags(p->triggering, p->polarity);
 413
 414         pnp_register_irq_resource(option, irq);
 415 }
 416
 417 static void pnpacpi_parse_port_option(struct pnp_option *option,
 418                                       struct acpi_resource_io *io)
 419 {
 420         struct pnp_port *port;
 421
 422         if (io->address_length == 0)
 423                 return;
 424         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 425         if (!port)
 426                 return;
 427         port->min = io->minimum;
 428         port->max = io->maximum;
 429         port->align = io->alignment;
 430         port->size = io->address_length;
 431         port->flags = ACPI_DECODE_16 == io->io_decode ?
 432             PNP_PORT_FLAG_16BITADDR : 0;
 433         pnp_register_port_resource(option, port);
 434 }
 435
 436 static void pnpacpi_parse_fixed_port_option(struct pnp_option *option,
 437                                             struct acpi_resource_fixed_io *io)
 438 {
 439         struct pnp_port *port;
 440
 441         if (io->address_length == 0)
 442                 return;
 443         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 444         if (!port)
 445                 return;
 446         port->min = port->max = io->address;
 447         port->size = io->address_length;
 448         port->align = 0;
 449         port->flags = PNP_PORT_FLAG_FIXED;
 450         pnp_register_port_resource(option, port);
 451 }
 452
 453 static void pnpacpi_parse_mem24_option(struct pnp_option *option,
 454                                        struct acpi_resource_memory24 *p)
 455 {
 456         struct pnp_mem *mem;
 457
 458         if (p->address_length == 0)
 459                 return;
 460         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 461         if (!mem)
 462                 return;
 463         mem->min = p->minimum;
 464         mem->max = p->maximum;
 465         mem->align = p->alignment;
 466         mem->size = p->address_length;
 467
 468         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 469             IORESOURCE_MEM_WRITEABLE : 0;
 470
 471         pnp_register_mem_resource(option, mem);
 472 }
 473
 474 static void pnpacpi_parse_mem32_option(struct pnp_option *option,
 475                                        struct acpi_resource_memory32 *p)
 476 {
 477         struct pnp_mem *mem;
 478
 479         if (p->address_length == 0)
 480                 return;
 481         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 482         if (!mem)
 483                 return;
 484         mem->min = p->minimum;
 485         mem->max = p->maximum;
 486         mem->align = p->alignment;
 487         mem->size = p->address_length;
 488
 489         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 490             IORESOURCE_MEM_WRITEABLE : 0;
 491
 492         pnp_register_mem_resource(option, mem);
 493 }
 494
 495 static void pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
 496                                          struct acpi_resource_fixed_memory32 *p)
 497 {
 498         struct pnp_mem *mem;
 499
 500         if (p->address_length == 0)
 501                 return;
 502         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 503         if (!mem)
 504                 return;
 505         mem->min = mem->max = p->address;
 506         mem->size = p->address_length;
 507         mem->align = 0;
 508
 509         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 510             IORESOURCE_MEM_WRITEABLE : 0;
 511
 512         pnp_register_mem_resource(option, mem);
 513 }
 514
 515 static void pnpacpi_parse_address_option(struct pnp_option *option,
 516                                          struct acpi_resource *r)
 517 {
 518         struct acpi_resource_address64 addr, *p = &addr;
 519         acpi_status status;
 520         struct pnp_mem *mem;
 521         struct pnp_port *port;
 522
 523         status = acpi_resource_to_address64(r, p);
 524         if (!ACPI_SUCCESS(status)) {
 525                 pnp_warn("PnPACPI: failed to convert resource type %d",
 526                          r->type);
 527                 return;
 528         }
 529
 530         if (p->address_length == 0)
 531                 return;
 532
 533         if (p->resource_type == ACPI_MEMORY_RANGE) {
 534                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 535                 if (!mem)
 536                         return;
 537                 mem->min = mem->max = p->minimum;
 538                 mem->size = p->address_length;
 539                 mem->align = 0;
 540                 mem->flags = (p->info.mem.write_protect ==
 541                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 542                     : 0;
 543                 pnp_register_mem_resource(option, mem);
 544         } else if (p->resource_type == ACPI_IO_RANGE) {
 545                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 546                 if (!port)
 547                         return;
 548                 port->min = port->max = p->minimum;
 549                 port->size = p->address_length;
 550                 port->align = 0;
 551                 port->flags = PNP_PORT_FLAG_FIXED;
 552                 pnp_register_port_resource(option, port);
 553         }
 554 }
 555
 556 struct acpipnp_parse_option_s {
 557         struct pnp_option *option;
 558         struct pnp_option *option_independent;
 559         struct pnp_dev *dev;
 560 };
 561
 562 static acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 563                                            void *data)
 564 {
 565         int priority = 0;
 566         struct acpipnp_parse_option_s *parse_data = data;
 567         struct pnp_dev *dev = parse_data->dev;
 568         struct pnp_option *option = parse_data->option;
 569
 570         switch (res->type) {
 571         case ACPI_RESOURCE_TYPE_IRQ:
 572                 pnpacpi_parse_irq_option(option, &res->data.irq);
 573                 break;
 574
 575         case ACPI_RESOURCE_TYPE_DMA:
 576                 pnpacpi_parse_dma_option(option, &res->data.dma);
 577                 break;
 578
 579         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 580                 switch (res->data.start_dpf.compatibility_priority) {
 581                 case ACPI_GOOD_CONFIGURATION:
 582                         priority = PNP_RES_PRIORITY_PREFERRED;
 583                         break;
 584
 585                 case ACPI_ACCEPTABLE_CONFIGURATION:
 586                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 587                         break;
 588
 589                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 590                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 591                         break;
 592                 default:
 593                         priority = PNP_RES_PRIORITY_INVALID;
 594                         break;
 595                 }
 596                 /* TBD: Consider performance/robustness bits */
 597                 option = pnp_register_dependent_option(dev, priority);
 598                 if (!option)
 599                         return AE_ERROR;
 600                 parse_data->option = option;
 601                 break;
 602
 603         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 604                 /*only one EndDependentFn is allowed */
 605                 if (!parse_data->option_independent) {
 606                         pnp_warn("PnPACPI: more than one EndDependentFn");
 607                         return AE_ERROR;
 608                 }
 609                 parse_data->option = parse_data->option_independent;
 610                 parse_data->option_independent = NULL;
 611                 break;
 612
 613         case ACPI_RESOURCE_TYPE_IO:
 614                 pnpacpi_parse_port_option(option, &res->data.io);
 615                 break;
 616
 617         case ACPI_RESOURCE_TYPE_FIXED_IO:
 618                 pnpacpi_parse_fixed_port_option(option, &res->data.fixed_io);
 619                 break;
 620
 621         case ACPI_RESOURCE_TYPE_VENDOR:
 622         case ACPI_RESOURCE_TYPE_END_TAG:
 623                 break;
 624
 625         case ACPI_RESOURCE_TYPE_MEMORY24:
 626                 pnpacpi_parse_mem24_option(option, &res->data.memory24);
 627                 break;
 628
 629         case ACPI_RESOURCE_TYPE_MEMORY32:
 630                 pnpacpi_parse_mem32_option(option, &res->data.memory32);
 631                 break;
 632
 633         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 634                 pnpacpi_parse_fixed_mem32_option(option,
 635                                                  &res->data.fixed_memory32);
 636                 break;
 637
 638         case ACPI_RESOURCE_TYPE_ADDRESS16:
 639         case ACPI_RESOURCE_TYPE_ADDRESS32:
 640         case ACPI_RESOURCE_TYPE_ADDRESS64:
 641                 pnpacpi_parse_address_option(option, res);
 642                 break;
 643
 644         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 645                 break;
 646
 647         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 648                 pnpacpi_parse_ext_irq_option(option, &res->data.extended_irq);
 649                 break;
 650
 651         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 652                 break;
 653
 654         default:
 655                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 656                 return AE_ERROR;
 657         }
 658
 659         return AE_OK;
 660 }
 661
 662 acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle,
 663                                                struct pnp_dev * dev)
 664 {
 665         acpi_status status;
 666         struct acpipnp_parse_option_s parse_data;
 667
 668         parse_data.option = pnp_register_independent_option(dev);
 669         if (!parse_data.option)
 670                 return AE_ERROR;
 671         parse_data.option_independent = parse_data.option;
 672         parse_data.dev = dev;
 673         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 674                                      pnpacpi_option_resource, &parse_data);
 675
 676         return status;
 677 }
 678
 679 static int pnpacpi_supported_resource(struct acpi_resource *res)
 680 {
 681         switch (res->type) {
 682         case ACPI_RESOURCE_TYPE_IRQ:
 683         case ACPI_RESOURCE_TYPE_DMA:
 684         case ACPI_RESOURCE_TYPE_IO:
 685         case ACPI_RESOURCE_TYPE_FIXED_IO:
 686         case ACPI_RESOURCE_TYPE_MEMORY24:
 687         case ACPI_RESOURCE_TYPE_MEMORY32:
 688         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 689         case ACPI_RESOURCE_TYPE_ADDRESS16:
 690         case ACPI_RESOURCE_TYPE_ADDRESS32:
 691         case ACPI_RESOURCE_TYPE_ADDRESS64:
 692         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 693                 return 1;
 694         }
 695         return 0;
 696 }
 697
 698 /*
 699  * Set resource
 700  */
 701 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 702                                            void *data)
 703 {
 704         int *res_cnt = data;
 705
 706         if (pnpacpi_supported_resource(res))
 707                 (*res_cnt)++;
 708         return AE_OK;
 709 }
 710
 711 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 712 {
 713         struct acpi_resource **resource = data;
 714
 715         if (pnpacpi_supported_resource(res)) {
 716                 (*resource)->type = res->type;
 717                 (*resource)->length = sizeof(struct acpi_resource);
 718                 (*resource)++;
 719         }
 720
 721         return AE_OK;
 722 }
 723
 724 int pnpacpi_build_resource_template(acpi_handle handle,
 725                                     struct acpi_buffer *buffer)
 726 {
 727         struct acpi_resource *resource;
 728         int res_cnt = 0;
 729         acpi_status status;
 730
 731         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 732                                      pnpacpi_count_resources, &res_cnt);
 733         if (ACPI_FAILURE(status)) {
 734                 pnp_err("Evaluate _CRS failed");
 735                 return -EINVAL;
 736         }
 737         if (!res_cnt)
 738                 return -EINVAL;
 739         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 740         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 741         if (!buffer->pointer)
 742                 return -ENOMEM;
 743         pnp_dbg("Res cnt %d", res_cnt);
 744         resource = (struct acpi_resource *)buffer->pointer;
 745         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 746                                      pnpacpi_type_resources, &resource);
 747         if (ACPI_FAILURE(status)) {
 748                 kfree(buffer->pointer);
 749                 pnp_err("Evaluate _CRS failed");
 750                 return -EINVAL;
 751         }
 752         /* resource will pointer the end resource now */
 753         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 754
 755         return 0;
 756 }
 757
 758 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 759                                struct resource *p)
 760 {
 761         int triggering, polarity;
 762
 763         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 764         resource->data.irq.triggering = triggering;
 765         resource->data.irq.polarity = polarity;
 766         if (triggering == ACPI_EDGE_SENSITIVE)
 767                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 768         else
 769                 resource->data.irq.sharable = ACPI_SHARED;
 770         resource->data.irq.interrupt_count = 1;
 771         resource->data.irq.interrupts[0] = p->start;
 772 }
 773
 774 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 775                                    struct resource *p)
 776 {
 777         int triggering, polarity;
 778
 779         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 780         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 781         resource->data.extended_irq.triggering = triggering;
 782         resource->data.extended_irq.polarity = polarity;
 783         if (triggering == ACPI_EDGE_SENSITIVE)
 784                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 785         else
 786                 resource->data.irq.sharable = ACPI_SHARED;
 787         resource->data.extended_irq.interrupt_count = 1;
 788         resource->data.extended_irq.interrupts[0] = p->start;
 789 }
 790
 791 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 792                                struct resource *p)
 793 {
 794         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 795         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 796         case IORESOURCE_DMA_TYPEA:
 797                 resource->data.dma.type = ACPI_TYPE_A;
 798                 break;
 799         case IORESOURCE_DMA_TYPEB:
 800                 resource->data.dma.type = ACPI_TYPE_B;
 801                 break;
 802         case IORESOURCE_DMA_TYPEF:
 803                 resource->data.dma.type = ACPI_TYPE_F;
 804                 break;
 805         default:
 806                 resource->data.dma.type = ACPI_COMPATIBILITY;
 807         }
 808
 809         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 810         case IORESOURCE_DMA_8BIT:
 811                 resource->data.dma.transfer = ACPI_TRANSFER_8;
 812                 break;
 813         case IORESOURCE_DMA_8AND16BIT:
 814                 resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 815                 break;
 816         default:
 817                 resource->data.dma.transfer = ACPI_TRANSFER_16;
 818         }
 819
 820         resource->data.dma.bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 821         resource->data.dma.channel_count = 1;
 822         resource->data.dma.channels[0] = p->start;
 823 }
 824
 825 static void pnpacpi_encode_io(struct acpi_resource *resource,
 826                               struct resource *p)
 827 {
 828         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 829         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 830             ACPI_DECODE_16 : ACPI_DECODE_10;
 831         resource->data.io.minimum = p->start;
 832         resource->data.io.maximum = p->end;
 833         resource->data.io.alignment = 0;        /* Correct? */
 834         resource->data.io.address_length = p->end - p->start + 1;
 835 }
 836
 837 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 838                                     struct resource *p)
 839 {
 840         resource->data.fixed_io.address = p->start;
 841         resource->data.fixed_io.address_length = p->end - p->start + 1;
 842 }
 843
 844 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 845                                  struct resource *p)
 846 {
 847         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 848         resource->data.memory24.write_protect =
 849             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 850             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 851         resource->data.memory24.minimum = p->start;
 852         resource->data.memory24.maximum = p->end;
 853         resource->data.memory24.alignment = 0;
 854         resource->data.memory24.address_length = p->end - p->start + 1;
 855 }
 856
 857 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 858                                  struct resource *p)
 859 {
 860         resource->data.memory32.write_protect =
 861             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 862             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 863         resource->data.memory32.minimum = p->start;
 864         resource->data.memory32.maximum = p->end;
 865         resource->data.memory32.alignment = 0;
 866         resource->data.memory32.address_length = p->end - p->start + 1;
 867 }
 868
 869 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 870                                        struct resource *p)
 871 {
 872         resource->data.fixed_memory32.write_protect =
 873             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 874             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 875         resource->data.fixed_memory32.address = p->start;
 876         resource->data.fixed_memory32.address_length = p->end - p->start + 1;
 877 }
 878
 879 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 880                              struct acpi_buffer *buffer)
 881 {
 882         int i = 0;
 883         /* pnpacpi_build_resource_template allocates extra mem */
 884         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 885         struct acpi_resource *resource = buffer->pointer;
 886         int port = 0, irq = 0, dma = 0, mem = 0;
 887
 888         pnp_dbg("res cnt %d", res_cnt);
 889         while (i < res_cnt) {
 890                 switch (resource->type) {
 891                 case ACPI_RESOURCE_TYPE_IRQ:
 892                         pnp_dbg("Encode irq");
 893                         pnpacpi_encode_irq(resource,
 894                                            &res_table->irq_resource[irq]);
 895                         irq++;
 896                         break;
 897
 898                 case ACPI_RESOURCE_TYPE_DMA:
 899                         pnp_dbg("Encode dma");
 900                         pnpacpi_encode_dma(resource,
 901                                            &res_table->dma_resource[dma]);
 902                         dma++;
 903                         break;
 904                 case ACPI_RESOURCE_TYPE_IO:
 905                         pnp_dbg("Encode io");
 906                         pnpacpi_encode_io(resource,
 907                                           &res_table->port_resource[port]);
 908                         port++;
 909                         break;
 910                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 911                         pnp_dbg("Encode fixed io");
 912                         pnpacpi_encode_fixed_io(resource,
 913                                                 &res_table->
 914                                                 port_resource[port]);
 915                         port++;
 916                         break;
 917                 case ACPI_RESOURCE_TYPE_MEMORY24:
 918                         pnp_dbg("Encode mem24");
 919                         pnpacpi_encode_mem24(resource,
 920                                              &res_table->mem_resource[mem]);
 921                         mem++;
 922                         break;
 923                 case ACPI_RESOURCE_TYPE_MEMORY32:
 924                         pnp_dbg("Encode mem32");
 925                         pnpacpi_encode_mem32(resource,
 926                                              &res_table->mem_resource[mem]);
 927                         mem++;
 928                         break;
 929                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 930                         pnp_dbg("Encode fixed mem32");
 931                         pnpacpi_encode_fixed_mem32(resource,
 932                                                    &res_table->
 933                                                    mem_resource[mem]);
 934                         mem++;
 935                         break;
 936                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 937                         pnp_dbg("Encode ext irq");
 938                         pnpacpi_encode_ext_irq(resource,
 939                                                &res_table->irq_resource[irq]);
 940                         irq++;
 941                         break;
 942                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 943                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 944                 case ACPI_RESOURCE_TYPE_VENDOR:
 945                 case ACPI_RESOURCE_TYPE_END_TAG:
 946                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 947                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 948                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 949                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 950                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 951                 default:        /* other type */
 952                         pnp_warn("unknown resource type %d", resource->type);
 953                         return -EINVAL;
 954                 }
 955                 resource++;
 956                 i++;
 957         }
 958         return 0;
 959 }