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, int shareable)
  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         res->irq_resource[i].flags |= irq_flags(triggering, polarity);
  93         irq = acpi_register_gsi(gsi, triggering, polarity);
  94         if (irq < 0) {
  95                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
  96                 return;
  97         }
  98
  99         if (shareable)
 100                 res->irq_resource[i].flags |= IORESOURCE_IRQ_SHAREABLE;
 101
 102         res->irq_resource[i].start = irq;
 103         res->irq_resource[i].end = irq;
 104         pcibios_penalize_isa_irq(irq, 1);
 105 }
 106
 107 static int dma_flags(int type, int bus_master, int transfer)
 108 {
 109         int flags = 0;
 110
 111         if (bus_master)
 112                 flags |= IORESOURCE_DMA_MASTER;
 113         switch (type) {
 114         case ACPI_COMPATIBILITY:
 115                 flags |= IORESOURCE_DMA_COMPATIBLE;
 116                 break;
 117         case ACPI_TYPE_A:
 118                 flags |= IORESOURCE_DMA_TYPEA;
 119                 break;
 120         case ACPI_TYPE_B:
 121                 flags |= IORESOURCE_DMA_TYPEB;
 122                 break;
 123         case ACPI_TYPE_F:
 124                 flags |= IORESOURCE_DMA_TYPEF;
 125                 break;
 126         default:
 127                 /* Set a default value ? */
 128                 flags |= IORESOURCE_DMA_COMPATIBLE;
 129                 pnp_err("Invalid DMA type");
 130         }
 131         switch (transfer) {
 132         case ACPI_TRANSFER_8:
 133                 flags |= IORESOURCE_DMA_8BIT;
 134                 break;
 135         case ACPI_TRANSFER_8_16:
 136                 flags |= IORESOURCE_DMA_8AND16BIT;
 137                 break;
 138         case ACPI_TRANSFER_16:
 139                 flags |= IORESOURCE_DMA_16BIT;
 140                 break;
 141         default:
 142                 /* Set a default value ? */
 143                 flags |= IORESOURCE_DMA_8AND16BIT;
 144                 pnp_err("Invalid DMA transfer type");
 145         }
 146
 147         return flags;
 148 }
 149
 150 static void
 151 pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table *res, u32 dma,
 152         int type, int bus_master, int transfer)
 153 {
 154         int i = 0;
 155         while (i < PNP_MAX_DMA &&
 156                         !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 157                 i++;
 158         if (i < PNP_MAX_DMA) {
 159                 res->dma_resource[i].flags = IORESOURCE_DMA;  // Also clears _UNSET flag
 160                 res->dma_resource[i].flags |= dma_flags(type, bus_master, transfer);
 161                 if (dma == -1) {
 162                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 163                         return;
 164                 }
 165                 res->dma_resource[i].start = dma;
 166                 res->dma_resource[i].end = dma;
 167         }
 168 }
 169
 170 static void
 171 pnpacpi_parse_allocated_ioresource(struct pnp_resource_table *res,
 172         u64 io, u64 len, int io_decode)
 173 {
 174         int i = 0;
 175         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 176                         i < PNP_MAX_PORT)
 177                 i++;
 178         if (i < PNP_MAX_PORT) {
 179                 res->port_resource[i].flags = IORESOURCE_IO;  // Also clears _UNSET flag
 180                 if (io_decode == ACPI_DECODE_16)
 181                         res->port_resource[i].flags |= PNP_PORT_FLAG_16BITADDR;
 182                 if (len <= 0 || (io + len -1) >= 0x10003) {
 183                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 184                         return;
 185                 }
 186                 res->port_resource[i].start = io;
 187                 res->port_resource[i].end = io + len - 1;
 188         }
 189 }
 190
 191 static void
 192 pnpacpi_parse_allocated_memresource(struct pnp_resource_table *res,
 193         u64 mem, u64 len, int write_protect)
 194 {
 195         int i = 0;
 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
 214 pnpacpi_parse_allocated_address_space(struct pnp_resource_table *res_table,
 215         struct acpi_resource *res)
 216 {
 217         struct acpi_resource_address64 addr, *p = &addr;
 218         acpi_status status;
 219
 220         status = acpi_resource_to_address64(res, p);
 221         if (!ACPI_SUCCESS(status)) {
 222                 pnp_warn("PnPACPI: failed to convert resource type %d",
 223                         res->type);
 224                 return;
 225         }
 226
 227         if (p->producer_consumer == ACPI_PRODUCER)
 228                 return;
 229
 230         if (p->resource_type == ACPI_MEMORY_RANGE)
 231                 pnpacpi_parse_allocated_memresource(res_table,
 232                                 p->minimum, p->address_length, 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 : ACPI_DECODE_16);
 237 }
 238
 239 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 240         void *data)
 241 {
 242         struct pnp_resource_table *res_table = (struct pnp_resource_table *)data;
 243         int i;
 244
 245         switch (res->type) {
 246         case ACPI_RESOURCE_TYPE_IRQ:
 247                 /*
 248                  * Per spec, only one interrupt per descriptor is allowed in
 249                  * _CRS, but some firmware violates this, so parse them all.
 250                  */
 251                 for (i = 0; i < res->data.irq.interrupt_count; i++) {
 252                         pnpacpi_parse_allocated_irqresource(res_table,
 253                                 res->data.irq.interrupts[i],
 254                                 res->data.irq.triggering,
 255                                 res->data.irq.polarity,
 256                                 res->data.irq.sharable);
 257                 }
 258                 break;
 259
 260         case ACPI_RESOURCE_TYPE_DMA:
 261                 if (res->data.dma.channel_count > 0)
 262                         pnpacpi_parse_allocated_dmaresource(res_table,
 263                                         res->data.dma.channels[0],
 264                                         res->data.dma.type,
 265                                         res->data.dma.bus_master,
 266                                         res->data.dma.transfer);
 267                 break;
 268
 269         case ACPI_RESOURCE_TYPE_IO:
 270                 pnpacpi_parse_allocated_ioresource(res_table,
 271                                 res->data.io.minimum,
 272                                 res->data.io.address_length,
 273                                 res->data.io.io_decode);
 274                 break;
 275
 276         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 277         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 278                 break;
 279
 280         case ACPI_RESOURCE_TYPE_FIXED_IO:
 281                 pnpacpi_parse_allocated_ioresource(res_table,
 282                                 res->data.fixed_io.address,
 283                                 res->data.fixed_io.address_length,
 284                                 ACPI_DECODE_10);
 285                 break;
 286
 287         case ACPI_RESOURCE_TYPE_VENDOR:
 288                 break;
 289
 290         case ACPI_RESOURCE_TYPE_END_TAG:
 291                 break;
 292
 293         case ACPI_RESOURCE_TYPE_MEMORY24:
 294                 pnpacpi_parse_allocated_memresource(res_table,
 295                                 res->data.memory24.minimum,
 296                                 res->data.memory24.address_length,
 297                                 res->data.memory24.write_protect);
 298                 break;
 299         case ACPI_RESOURCE_TYPE_MEMORY32:
 300                 pnpacpi_parse_allocated_memresource(res_table,
 301                                 res->data.memory32.minimum,
 302                                 res->data.memory32.address_length,
 303                                 res->data.memory32.write_protect);
 304                 break;
 305         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 306                 pnpacpi_parse_allocated_memresource(res_table,
 307                                 res->data.fixed_memory32.address,
 308                                 res->data.fixed_memory32.address_length,
 309                                 res->data.fixed_memory32.write_protect);
 310                 break;
 311         case ACPI_RESOURCE_TYPE_ADDRESS16:
 312         case ACPI_RESOURCE_TYPE_ADDRESS32:
 313         case ACPI_RESOURCE_TYPE_ADDRESS64:
 314                 pnpacpi_parse_allocated_address_space(res_table, res);
 315                 break;
 316
 317         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 318                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 319                         return AE_OK;
 320                 break;
 321
 322         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 323                 if (res->data.extended_irq.producer_consumer == ACPI_PRODUCER)
 324                         return AE_OK;
 325
 326                 for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
 327                         pnpacpi_parse_allocated_irqresource(res_table,
 328                                 res->data.extended_irq.interrupts[i],
 329                                 res->data.extended_irq.triggering,
 330                                 res->data.extended_irq.polarity,
 331                                 res->data.extended_irq.sharable);
 332                 }
 333                 break;
 334
 335         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 336                 break;
 337
 338         default:
 339                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 340                 return AE_ERROR;
 341         }
 342
 343         return AE_OK;
 344 }
 345
 346 acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle, struct pnp_resource_table *res)
 347 {
 348         /* Blank the resource table values */
 349         pnp_init_resource_table(res);
 350
 351         return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res);
 352 }
 353
 354 static void pnpacpi_parse_dma_option(struct pnp_option *option, struct acpi_resource_dma *p)
 355 {
 356         int i;
 357         struct pnp_dma * dma;
 358
 359         if (p->channel_count == 0)
 360                 return;
 361         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 362         if (!dma)
 363                 return;
 364
 365         for(i = 0; i < p->channel_count; i++)
 366                 dma->map |= 1 << p->channels[i];
 367
 368         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 369
 370         pnp_register_dma_resource(option, dma);
 371         return;
 372 }
 373
 374
 375 static void pnpacpi_parse_irq_option(struct pnp_option *option,
 376         struct acpi_resource_irq *p)
 377 {
 378         int i;
 379         struct pnp_irq *irq;
 380
 381         if (p->interrupt_count == 0)
 382                 return;
 383         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 384         if (!irq)
 385                 return;
 386
 387         for(i = 0; i < p->interrupt_count; i++)
 388                 if (p->interrupts[i])
 389                         __set_bit(p->interrupts[i], irq->map);
 390         irq->flags = irq_flags(p->triggering, p->polarity);
 391
 392         pnp_register_irq_resource(option, irq);
 393         return;
 394 }
 395
 396 static void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
 397         struct acpi_resource_extended_irq *p)
 398 {
 399         int i;
 400         struct pnp_irq *irq;
 401
 402         if (p->interrupt_count == 0)
 403                 return;
 404         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 405         if (!irq)
 406                 return;
 407
 408         for(i = 0; i < p->interrupt_count; i++)
 409                 if (p->interrupts[i])
 410                         __set_bit(p->interrupts[i], irq->map);
 411         irq->flags = irq_flags(p->triggering, p->polarity);
 412
 413         pnp_register_irq_resource(option, irq);
 414         return;
 415 }
 416
 417 static void
 418 pnpacpi_parse_port_option(struct pnp_option *option,
 419         struct acpi_resource_io *io)
 420 {
 421         struct pnp_port *port;
 422
 423         if (io->address_length == 0)
 424                 return;
 425         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 426         if (!port)
 427                 return;
 428         port->min = io->minimum;
 429         port->max = io->maximum;
 430         port->align = io->alignment;
 431         port->size = io->address_length;
 432         port->flags = ACPI_DECODE_16 == io->io_decode ?
 433                 PNP_PORT_FLAG_16BITADDR : 0;
 434         pnp_register_port_resource(option, port);
 435         return;
 436 }
 437
 438 static void
 439 pnpacpi_parse_fixed_port_option(struct pnp_option *option,
 440         struct acpi_resource_fixed_io *io)
 441 {
 442         struct pnp_port *port;
 443
 444         if (io->address_length == 0)
 445                 return;
 446         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 447         if (!port)
 448                 return;
 449         port->min = port->max = io->address;
 450         port->size = io->address_length;
 451         port->align = 0;
 452         port->flags = PNP_PORT_FLAG_FIXED;
 453         pnp_register_port_resource(option, port);
 454         return;
 455 }
 456
 457 static void
 458 pnpacpi_parse_mem24_option(struct pnp_option *option,
 459         struct acpi_resource_memory24 *p)
 460 {
 461         struct pnp_mem *mem;
 462
 463         if (p->address_length == 0)
 464                 return;
 465         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 466         if (!mem)
 467                 return;
 468         mem->min = p->minimum;
 469         mem->max = p->maximum;
 470         mem->align = p->alignment;
 471         mem->size = p->address_length;
 472
 473         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 474                         IORESOURCE_MEM_WRITEABLE : 0;
 475
 476         pnp_register_mem_resource(option, mem);
 477         return;
 478 }
 479
 480 static void
 481 pnpacpi_parse_mem32_option(struct pnp_option *option,
 482         struct acpi_resource_memory32 *p)
 483 {
 484         struct pnp_mem *mem;
 485
 486         if (p->address_length == 0)
 487                 return;
 488         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 489         if (!mem)
 490                 return;
 491         mem->min = p->minimum;
 492         mem->max = p->maximum;
 493         mem->align = p->alignment;
 494         mem->size = p->address_length;
 495
 496         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 497                         IORESOURCE_MEM_WRITEABLE : 0;
 498
 499         pnp_register_mem_resource(option, mem);
 500         return;
 501 }
 502
 503 static void
 504 pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
 505         struct acpi_resource_fixed_memory32 *p)
 506 {
 507         struct pnp_mem *mem;
 508
 509         if (p->address_length == 0)
 510                 return;
 511         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 512         if (!mem)
 513                 return;
 514         mem->min = mem->max = p->address;
 515         mem->size = p->address_length;
 516         mem->align = 0;
 517
 518         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 519                         IORESOURCE_MEM_WRITEABLE : 0;
 520
 521         pnp_register_mem_resource(option, mem);
 522         return;
 523 }
 524
 525 static void
 526 pnpacpi_parse_address_option(struct pnp_option *option, struct acpi_resource *r)
 527 {
 528         struct acpi_resource_address64 addr, *p = &addr;
 529         acpi_status status;
 530         struct pnp_mem *mem;
 531         struct pnp_port *port;
 532
 533         status = acpi_resource_to_address64(r, p);
 534         if (!ACPI_SUCCESS(status)) {
 535                 pnp_warn("PnPACPI: failed to convert resource type %d", r->type);
 536                 return;
 537         }
 538
 539         if (p->address_length == 0)
 540                 return;
 541
 542         if (p->resource_type == ACPI_MEMORY_RANGE) {
 543                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 544                 if (!mem)
 545                         return;
 546                 mem->min = mem->max = p->minimum;
 547                 mem->size = p->address_length;
 548                 mem->align = 0;
 549                 mem->flags = (p->info.mem.write_protect ==
 550                     ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE : 0;
 551                 pnp_register_mem_resource(option, mem);
 552         } else if (p->resource_type == ACPI_IO_RANGE) {
 553                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 554                 if (!port)
 555                         return;
 556                 port->min = port->max = p->minimum;
 557                 port->size = p->address_length;
 558                 port->align = 0;
 559                 port->flags = PNP_PORT_FLAG_FIXED;
 560                 pnp_register_port_resource(option, port);
 561         }
 562 }
 563
 564 struct acpipnp_parse_option_s {
 565         struct pnp_option *option;
 566         struct pnp_option *option_independent;
 567         struct pnp_dev *dev;
 568 };
 569
 570 static acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 571         void *data)
 572 {
 573         int priority = 0;
 574         struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
 575         struct pnp_dev *dev = parse_data->dev;
 576         struct pnp_option *option = parse_data->option;
 577
 578         switch (res->type) {
 579                 case ACPI_RESOURCE_TYPE_IRQ:
 580                         pnpacpi_parse_irq_option(option, &res->data.irq);
 581                         break;
 582
 583                 case ACPI_RESOURCE_TYPE_DMA:
 584                         pnpacpi_parse_dma_option(option, &res->data.dma);
 585                         break;
 586
 587                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 588                         switch (res->data.start_dpf.compatibility_priority) {
 589                                 case ACPI_GOOD_CONFIGURATION:
 590                                         priority = PNP_RES_PRIORITY_PREFERRED;
 591                                         break;
 592
 593                                 case ACPI_ACCEPTABLE_CONFIGURATION:
 594                                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 595                                         break;
 596
 597                                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 598                                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 599                                         break;
 600                                 default:
 601                                         priority = PNP_RES_PRIORITY_INVALID;
 602                                         break;
 603                         }
 604                         /* TBD: Considering performace/robustness bits */
 605                         option = pnp_register_dependent_option(dev, priority);
 606                         if (!option)
 607                                 return AE_ERROR;
 608                         parse_data->option = option;
 609                         break;
 610
 611                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 612                         /*only one EndDependentFn is allowed*/
 613                         if (!parse_data->option_independent) {
 614                                 pnp_warn("PnPACPI: more than one EndDependentFn");
 615                                 return AE_ERROR;
 616                         }
 617                         parse_data->option = parse_data->option_independent;
 618                         parse_data->option_independent = NULL;
 619                         break;
 620
 621                 case ACPI_RESOURCE_TYPE_IO:
 622                         pnpacpi_parse_port_option(option, &res->data.io);
 623                         break;
 624
 625                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 626                         pnpacpi_parse_fixed_port_option(option,
 627                                 &res->data.fixed_io);
 628                         break;
 629
 630                 case ACPI_RESOURCE_TYPE_VENDOR:
 631                 case ACPI_RESOURCE_TYPE_END_TAG:
 632                         break;
 633
 634                 case ACPI_RESOURCE_TYPE_MEMORY24:
 635                         pnpacpi_parse_mem24_option(option, &res->data.memory24);
 636                         break;
 637
 638                 case ACPI_RESOURCE_TYPE_MEMORY32:
 639                         pnpacpi_parse_mem32_option(option, &res->data.memory32);
 640                         break;
 641
 642                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 643                         pnpacpi_parse_fixed_mem32_option(option,
 644                                 &res->data.fixed_memory32);
 645                         break;
 646
 647                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 648                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 649                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 650                         pnpacpi_parse_address_option(option, res);
 651                         break;
 652
 653                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 654                         break;
 655
 656                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 657                         pnpacpi_parse_ext_irq_option(option,
 658                                 &res->data.extended_irq);
 659                         break;
 660
 661                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 662                         break;
 663
 664                 default:
 665                         pnp_warn("PnPACPI: unknown resource type %d", res->type);
 666                         return AE_ERROR;
 667         }
 668
 669         return AE_OK;
 670 }
 671
 672 acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle,
 673         struct pnp_dev *dev)
 674 {
 675         acpi_status status;
 676         struct acpipnp_parse_option_s parse_data;
 677
 678         parse_data.option = pnp_register_independent_option(dev);
 679         if (!parse_data.option)
 680                 return AE_ERROR;
 681         parse_data.option_independent = parse_data.option;
 682         parse_data.dev = dev;
 683         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 684                 pnpacpi_option_resource, &parse_data);
 685
 686         return status;
 687 }
 688
 689 static int pnpacpi_supported_resource(struct acpi_resource *res)
 690 {
 691         switch (res->type) {
 692         case ACPI_RESOURCE_TYPE_IRQ:
 693         case ACPI_RESOURCE_TYPE_DMA:
 694         case ACPI_RESOURCE_TYPE_IO:
 695         case ACPI_RESOURCE_TYPE_FIXED_IO:
 696         case ACPI_RESOURCE_TYPE_MEMORY24:
 697         case ACPI_RESOURCE_TYPE_MEMORY32:
 698         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 699         case ACPI_RESOURCE_TYPE_ADDRESS16:
 700         case ACPI_RESOURCE_TYPE_ADDRESS32:
 701         case ACPI_RESOURCE_TYPE_ADDRESS64:
 702         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 703                 return 1;
 704         }
 705         return 0;
 706 }
 707
 708 /*
 709  * Set resource
 710  */
 711 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 712         void *data)
 713 {
 714         int *res_cnt = (int *)data;
 715
 716         if (pnpacpi_supported_resource(res))
 717                 (*res_cnt)++;
 718         return AE_OK;
 719 }
 720
 721 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 722 {
 723         struct acpi_resource **resource = (struct acpi_resource **)data;
 724
 725         if (pnpacpi_supported_resource(res)) {
 726                 (*resource)->type = res->type;
 727                 (*resource)->length = sizeof(struct acpi_resource);
 728                 (*resource)++;
 729         }
 730
 731         return AE_OK;
 732 }
 733
 734 int pnpacpi_build_resource_template(acpi_handle handle,
 735         struct acpi_buffer *buffer)
 736 {
 737         struct acpi_resource *resource;
 738         int res_cnt = 0;
 739         acpi_status status;
 740
 741         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 742                 pnpacpi_count_resources, &res_cnt);
 743         if (ACPI_FAILURE(status)) {
 744                 pnp_err("Evaluate _CRS failed");
 745                 return -EINVAL;
 746         }
 747         if (!res_cnt)
 748                 return -EINVAL;
 749         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 750         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 751         if (!buffer->pointer)
 752                 return -ENOMEM;
 753         pnp_dbg("Res cnt %d", res_cnt);
 754         resource = (struct acpi_resource *)buffer->pointer;
 755         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 756                 pnpacpi_type_resources, &resource);
 757         if (ACPI_FAILURE(status)) {
 758                 kfree(buffer->pointer);
 759                 pnp_err("Evaluate _CRS failed");
 760                 return -EINVAL;
 761         }
 762         /* resource will pointer the end resource now */
 763         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 764
 765         return 0;
 766 }
 767
 768 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 769         struct resource *p)
 770 {
 771         int triggering, polarity;
 772
 773         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 774         resource->data.irq.triggering = triggering;
 775         resource->data.irq.polarity = polarity;
 776         if (triggering == ACPI_EDGE_SENSITIVE)
 777                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 778         else
 779                 resource->data.irq.sharable = ACPI_SHARED;
 780         resource->data.irq.interrupt_count = 1;
 781         resource->data.irq.interrupts[0] = p->start;
 782 }
 783
 784 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 785         struct resource *p)
 786 {
 787         int triggering, polarity;
 788
 789         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 790         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 791         resource->data.extended_irq.triggering = triggering;
 792         resource->data.extended_irq.polarity = polarity;
 793         if (triggering == ACPI_EDGE_SENSITIVE)
 794                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 795         else
 796                 resource->data.irq.sharable = ACPI_SHARED;
 797         resource->data.extended_irq.interrupt_count = 1;
 798         resource->data.extended_irq.interrupts[0] = p->start;
 799 }
 800
 801 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 802         struct resource *p)
 803 {
 804         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 805         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 806                 case IORESOURCE_DMA_TYPEA:
 807                         resource->data.dma.type = ACPI_TYPE_A;
 808                         break;
 809                 case IORESOURCE_DMA_TYPEB:
 810                         resource->data.dma.type = ACPI_TYPE_B;
 811                         break;
 812                 case IORESOURCE_DMA_TYPEF:
 813                         resource->data.dma.type = ACPI_TYPE_F;
 814                         break;
 815                 default:
 816                         resource->data.dma.type = ACPI_COMPATIBILITY;
 817         }
 818
 819         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 820                 case IORESOURCE_DMA_8BIT:
 821                         resource->data.dma.transfer = ACPI_TRANSFER_8;
 822                         break;
 823                 case IORESOURCE_DMA_8AND16BIT:
 824                         resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 825                         break;
 826                 default:
 827                         resource->data.dma.transfer = ACPI_TRANSFER_16;
 828         }
 829
 830         resource->data.dma.bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 831         resource->data.dma.channel_count = 1;
 832         resource->data.dma.channels[0] = p->start;
 833 }
 834
 835 static void pnpacpi_encode_io(struct acpi_resource *resource,
 836         struct resource *p)
 837 {
 838         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 839         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
 840                 ACPI_DECODE_16 : ACPI_DECODE_10;
 841         resource->data.io.minimum = p->start;
 842         resource->data.io.maximum = p->end;
 843         resource->data.io.alignment = 0; /* Correct? */
 844         resource->data.io.address_length = p->end - p->start + 1;
 845 }
 846
 847 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 848         struct resource *p)
 849 {
 850         resource->data.fixed_io.address = p->start;
 851         resource->data.fixed_io.address_length = p->end - p->start + 1;
 852 }
 853
 854 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 855         struct resource *p)
 856 {
 857         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 858         resource->data.memory24.write_protect =
 859                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 860                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 861         resource->data.memory24.minimum = p->start;
 862         resource->data.memory24.maximum = p->end;
 863         resource->data.memory24.alignment = 0;
 864         resource->data.memory24.address_length = p->end - p->start + 1;
 865 }
 866
 867 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 868         struct resource *p)
 869 {
 870         resource->data.memory32.write_protect =
 871                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 872                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 873         resource->data.memory32.minimum = p->start;
 874         resource->data.memory32.maximum = p->end;
 875         resource->data.memory32.alignment = 0;
 876         resource->data.memory32.address_length = p->end - p->start + 1;
 877 }
 878
 879 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 880         struct resource *p)
 881 {
 882         resource->data.fixed_memory32.write_protect =
 883                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 884                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 885         resource->data.fixed_memory32.address = p->start;
 886         resource->data.fixed_memory32.address_length = p->end - p->start + 1;
 887 }
 888
 889 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 890         struct acpi_buffer *buffer)
 891 {
 892         int i = 0;
 893         /* pnpacpi_build_resource_template allocates extra mem */
 894         int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
 895         struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
 896         int port = 0, irq = 0, dma = 0, mem = 0;
 897
 898         pnp_dbg("res cnt %d", res_cnt);
 899         while (i < res_cnt) {
 900                 switch(resource->type) {
 901                 case ACPI_RESOURCE_TYPE_IRQ:
 902                         pnp_dbg("Encode irq");
 903                         pnpacpi_encode_irq(resource,
 904                                 &res_table->irq_resource[irq]);
 905                         irq++;
 906                         break;
 907
 908                 case ACPI_RESOURCE_TYPE_DMA:
 909                         pnp_dbg("Encode dma");
 910                         pnpacpi_encode_dma(resource,
 911                                 &res_table->dma_resource[dma]);
 912                         dma++;
 913                         break;
 914                 case ACPI_RESOURCE_TYPE_IO:
 915                         pnp_dbg("Encode io");
 916                         pnpacpi_encode_io(resource,
 917                                 &res_table->port_resource[port]);
 918                         port++;
 919                         break;
 920                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 921                         pnp_dbg("Encode fixed io");
 922                         pnpacpi_encode_fixed_io(resource,
 923                                 &res_table->port_resource[port]);
 924                         port++;
 925                         break;
 926                 case ACPI_RESOURCE_TYPE_MEMORY24:
 927                         pnp_dbg("Encode mem24");
 928                         pnpacpi_encode_mem24(resource,
 929                                 &res_table->mem_resource[mem]);
 930                         mem++;
 931                         break;
 932                 case ACPI_RESOURCE_TYPE_MEMORY32:
 933                         pnp_dbg("Encode mem32");
 934                         pnpacpi_encode_mem32(resource,
 935                                 &res_table->mem_resource[mem]);
 936                         mem++;
 937                         break;
 938                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 939                         pnp_dbg("Encode fixed mem32");
 940                         pnpacpi_encode_fixed_mem32(resource,
 941                                 &res_table->mem_resource[mem]);
 942                         mem++;
 943                         break;
 944                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 945                         pnp_dbg("Encode ext irq");
 946                         pnpacpi_encode_ext_irq(resource,
 947                                 &res_table->irq_resource[irq]);
 948                         irq++;
 949                         break;
 950                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 951                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 952                 case ACPI_RESOURCE_TYPE_VENDOR:
 953                 case ACPI_RESOURCE_TYPE_END_TAG:
 954                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 955                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 956                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 957                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 958                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 959                 default: /* other type */
 960                         pnp_warn("unknown resource type %d", resource->type);
 961                         return -EINVAL;
 962                 }
 963                 resource++;
 964                 i++;
 965         }
 966         return 0;
 967 }