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                 return;
 103
 104         /*
 105          * in IO-APIC mode, use overrided attribute. Two reasons:
 106          * 1. BIOS bug in DSDT
 107          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 108          */
 109         if (!acpi_get_override_irq(gsi, &t, &p)) {
 110                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 111                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 112
 113                 if (triggering != t || polarity != p) {
 114                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 115                                 gsi, t ? "edge":"level", p ? "low":"high");
 116                         triggering = t;
 117                         polarity = p;
 118                 }
 119         }
 120
 121         flags = irq_flags(triggering, polarity, shareable);
 122         irq = acpi_register_gsi(gsi, triggering, polarity);
 123         if (irq >= 0)
 124                 pcibios_penalize_isa_irq(irq, 1);
 125         else
 126                 flags |= IORESOURCE_DISABLED;
 127
 128         pnp_add_irq_resource(dev, irq, flags);
 129 }
 130
 131 static int dma_flags(int type, int bus_master, int transfer)
 132 {
 133         int flags = 0;
 134
 135         if (bus_master)
 136                 flags |= IORESOURCE_DMA_MASTER;
 137         switch (type) {
 138         case ACPI_COMPATIBILITY:
 139                 flags |= IORESOURCE_DMA_COMPATIBLE;
 140                 break;
 141         case ACPI_TYPE_A:
 142                 flags |= IORESOURCE_DMA_TYPEA;
 143                 break;
 144         case ACPI_TYPE_B:
 145                 flags |= IORESOURCE_DMA_TYPEB;
 146                 break;
 147         case ACPI_TYPE_F:
 148                 flags |= IORESOURCE_DMA_TYPEF;
 149                 break;
 150         default:
 151                 /* Set a default value ? */
 152                 flags |= IORESOURCE_DMA_COMPATIBLE;
 153                 pnp_err("Invalid DMA type");
 154         }
 155         switch (transfer) {
 156         case ACPI_TRANSFER_8:
 157                 flags |= IORESOURCE_DMA_8BIT;
 158                 break;
 159         case ACPI_TRANSFER_8_16:
 160                 flags |= IORESOURCE_DMA_8AND16BIT;
 161                 break;
 162         case ACPI_TRANSFER_16:
 163                 flags |= IORESOURCE_DMA_16BIT;
 164                 break;
 165         default:
 166                 /* Set a default value ? */
 167                 flags |= IORESOURCE_DMA_8AND16BIT;
 168                 pnp_err("Invalid DMA transfer type");
 169         }
 170
 171         return flags;
 172 }
 173
 174 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 175                                                u64 len, int io_decode)
 176 {
 177         int flags = 0;
 178         u64 end = start + len - 1;
 179
 180         if (io_decode == ACPI_DECODE_16)
 181                 flags |= PNP_PORT_FLAG_16BITADDR;
 182         if (len == 0 || end >= 0x10003)
 183                 flags |= IORESOURCE_DISABLED;
 184
 185         pnp_add_io_resource(dev, start, end, flags);
 186 }
 187
 188 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 189                                                 u64 start, u64 len,
 190                                                 int write_protect)
 191 {
 192         int flags = 0;
 193         u64 end = start + len - 1;
 194
 195         if (len == 0)
 196                 flags |= IORESOURCE_DISABLED;
 197         if (write_protect == ACPI_READ_WRITE_MEMORY)
 198                 flags |= IORESOURCE_MEM_WRITEABLE;
 199
 200         pnp_add_mem_resource(dev, start, end, flags);
 201 }
 202
 203 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 204                                                   struct acpi_resource *res)
 205 {
 206         struct acpi_resource_address64 addr, *p = &addr;
 207         acpi_status status;
 208
 209         status = acpi_resource_to_address64(res, p);
 210         if (!ACPI_SUCCESS(status)) {
 211                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 212                          res->type);
 213                 return;
 214         }
 215
 216         if (p->producer_consumer == ACPI_PRODUCER)
 217                 return;
 218
 219         if (p->resource_type == ACPI_MEMORY_RANGE)
 220                 pnpacpi_parse_allocated_memresource(dev,
 221                         p->minimum, p->address_length,
 222                         p->info.mem.write_protect);
 223         else if (p->resource_type == ACPI_IO_RANGE)
 224                 pnpacpi_parse_allocated_ioresource(dev,
 225                         p->minimum, p->address_length,
 226                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 227                                 ACPI_DECODE_16);
 228 }
 229
 230 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 231                                               void *data)
 232 {
 233         struct pnp_dev *dev = data;
 234         struct acpi_resource_irq *irq;
 235         struct acpi_resource_dma *dma;
 236         struct acpi_resource_io *io;
 237         struct acpi_resource_fixed_io *fixed_io;
 238         struct acpi_resource_memory24 *memory24;
 239         struct acpi_resource_memory32 *memory32;
 240         struct acpi_resource_fixed_memory32 *fixed_memory32;
 241         struct acpi_resource_extended_irq *extended_irq;
 242         int i, flags;
 243
 244         switch (res->type) {
 245         case ACPI_RESOURCE_TYPE_IRQ:
 246                 /*
 247                  * Per spec, only one interrupt per descriptor is allowed in
 248                  * _CRS, but some firmware violates this, so parse them all.
 249                  */
 250                 irq = &res->data.irq;
 251                 for (i = 0; i < irq->interrupt_count; i++) {
 252                         pnpacpi_parse_allocated_irqresource(dev,
 253                                 irq->interrupts[i],
 254                                 irq->triggering,
 255                                 irq->polarity,
 256                                 irq->sharable);
 257                 }
 258                 break;
 259
 260         case ACPI_RESOURCE_TYPE_DMA:
 261                 dma = &res->data.dma;
 262                 if (dma->channel_count > 0) {
 263                         flags = dma_flags(dma->type, dma->bus_master,
 264                                           dma->transfer);
 265                         if (dma->channels[0] == (u8) -1)
 266                                 flags |= IORESOURCE_DISABLED;
 267                         pnp_add_dma_resource(dev, dma->channels[0], flags);
 268                 }
 269                 break;
 270
 271         case ACPI_RESOURCE_TYPE_IO:
 272                 io = &res->data.io;
 273                 pnpacpi_parse_allocated_ioresource(dev,
 274                         io->minimum,
 275                         io->address_length,
 276                         io->io_decode);
 277                 break;
 278
 279         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 280         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 281                 break;
 282
 283         case ACPI_RESOURCE_TYPE_FIXED_IO:
 284                 fixed_io = &res->data.fixed_io;
 285                 pnpacpi_parse_allocated_ioresource(dev,
 286                         fixed_io->address,
 287                         fixed_io->address_length,
 288                         ACPI_DECODE_10);
 289                 break;
 290
 291         case ACPI_RESOURCE_TYPE_VENDOR:
 292                 break;
 293
 294         case ACPI_RESOURCE_TYPE_END_TAG:
 295                 break;
 296
 297         case ACPI_RESOURCE_TYPE_MEMORY24:
 298                 memory24 = &res->data.memory24;
 299                 pnpacpi_parse_allocated_memresource(dev,
 300                         memory24->minimum,
 301                         memory24->address_length,
 302                         memory24->write_protect);
 303                 break;
 304         case ACPI_RESOURCE_TYPE_MEMORY32:
 305                 memory32 = &res->data.memory32;
 306                 pnpacpi_parse_allocated_memresource(dev,
 307                         memory32->minimum,
 308                         memory32->address_length,
 309                         memory32->write_protect);
 310                 break;
 311         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 312                 fixed_memory32 = &res->data.fixed_memory32;
 313                 pnpacpi_parse_allocated_memresource(dev,
 314                         fixed_memory32->address,
 315                         fixed_memory32->address_length,
 316                         fixed_memory32->write_protect);
 317                 break;
 318         case ACPI_RESOURCE_TYPE_ADDRESS16:
 319         case ACPI_RESOURCE_TYPE_ADDRESS32:
 320         case ACPI_RESOURCE_TYPE_ADDRESS64:
 321                 pnpacpi_parse_allocated_address_space(dev, res);
 322                 break;
 323
 324         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 325                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 326                         return AE_OK;
 327                 break;
 328
 329         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 330                 extended_irq = &res->data.extended_irq;
 331                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 332                         return AE_OK;
 333
 334                 for (i = 0; i < extended_irq->interrupt_count; i++) {
 335                         pnpacpi_parse_allocated_irqresource(dev,
 336                                 extended_irq->interrupts[i],
 337                                 extended_irq->triggering,
 338                                 extended_irq->polarity,
 339                                 extended_irq->sharable);
 340                 }
 341                 break;
 342
 343         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 344                 break;
 345
 346         default:
 347                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 348                          res->type);
 349                 return AE_ERROR;
 350         }
 351
 352         return AE_OK;
 353 }
 354
 355 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 356 {
 357         acpi_handle handle = dev->data;
 358         acpi_status status;
 359
 360         dev_dbg(&dev->dev, "parse allocated resources\n");
 361
 362         pnp_init_resources(dev);
 363
 364         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 365                                      pnpacpi_allocated_resource, dev);
 366
 367         if (ACPI_FAILURE(status)) {
 368                 if (status != AE_NOT_FOUND)
 369                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 370                 return -EPERM;
 371         }
 372         return 0;
 373 }
 374
 375 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 376                                             struct pnp_option *option,
 377                                             struct acpi_resource_dma *p)
 378 {
 379         int i;
 380         struct pnp_dma *dma;
 381
 382         if (p->channel_count == 0)
 383                 return;
 384         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 385         if (!dma)
 386                 return;
 387
 388         for (i = 0; i < p->channel_count; i++)
 389                 dma->map |= 1 << p->channels[i];
 390
 391         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 392
 393         pnp_register_dma_resource(dev, option, dma);
 394 }
 395
 396 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 397                                             struct pnp_option *option,
 398                                             struct acpi_resource_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, p->sharable);
 413
 414         pnp_register_irq_resource(dev, option, irq);
 415 }
 416
 417 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 418                                                 struct pnp_option *option,
 419                                         struct acpi_resource_extended_irq *p)
 420 {
 421         int i;
 422         struct pnp_irq *irq;
 423
 424         if (p->interrupt_count == 0)
 425                 return;
 426         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 427         if (!irq)
 428                 return;
 429
 430         for (i = 0; i < p->interrupt_count; i++)
 431                 if (p->interrupts[i])
 432                         __set_bit(p->interrupts[i], irq->map);
 433         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 434
 435         pnp_register_irq_resource(dev, option, irq);
 436 }
 437
 438 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 439                                              struct pnp_option *option,
 440                                              struct acpi_resource_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 = io->minimum;
 450         port->max = io->maximum;
 451         port->align = io->alignment;
 452         port->size = io->address_length;
 453         port->flags = ACPI_DECODE_16 == io->io_decode ?
 454             PNP_PORT_FLAG_16BITADDR : 0;
 455         pnp_register_port_resource(dev, option, port);
 456 }
 457
 458 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 459                                                    struct pnp_option *option,
 460                                         struct acpi_resource_fixed_io *io)
 461 {
 462         struct pnp_port *port;
 463
 464         if (io->address_length == 0)
 465                 return;
 466         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 467         if (!port)
 468                 return;
 469         port->min = port->max = io->address;
 470         port->size = io->address_length;
 471         port->align = 0;
 472         port->flags = PNP_PORT_FLAG_FIXED;
 473         pnp_register_port_resource(dev, option, port);
 474 }
 475
 476 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 477                                               struct pnp_option *option,
 478                                               struct acpi_resource_memory24 *p)
 479 {
 480         struct pnp_mem *mem;
 481
 482         if (p->address_length == 0)
 483                 return;
 484         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 485         if (!mem)
 486                 return;
 487         mem->min = p->minimum;
 488         mem->max = p->maximum;
 489         mem->align = p->alignment;
 490         mem->size = p->address_length;
 491
 492         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 493             IORESOURCE_MEM_WRITEABLE : 0;
 494
 495         pnp_register_mem_resource(dev, option, mem);
 496 }
 497
 498 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 499                                               struct pnp_option *option,
 500                                               struct acpi_resource_memory32 *p)
 501 {
 502         struct pnp_mem *mem;
 503
 504         if (p->address_length == 0)
 505                 return;
 506         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 507         if (!mem)
 508                 return;
 509         mem->min = p->minimum;
 510         mem->max = p->maximum;
 511         mem->align = p->alignment;
 512         mem->size = p->address_length;
 513
 514         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 515             IORESOURCE_MEM_WRITEABLE : 0;
 516
 517         pnp_register_mem_resource(dev, option, mem);
 518 }
 519
 520 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 521                                                     struct pnp_option *option,
 522                                         struct acpi_resource_fixed_memory32 *p)
 523 {
 524         struct pnp_mem *mem;
 525
 526         if (p->address_length == 0)
 527                 return;
 528         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 529         if (!mem)
 530                 return;
 531         mem->min = mem->max = p->address;
 532         mem->size = p->address_length;
 533         mem->align = 0;
 534
 535         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 536             IORESOURCE_MEM_WRITEABLE : 0;
 537
 538         pnp_register_mem_resource(dev, option, mem);
 539 }
 540
 541 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 542                                                 struct pnp_option *option,
 543                                                 struct acpi_resource *r)
 544 {
 545         struct acpi_resource_address64 addr, *p = &addr;
 546         acpi_status status;
 547         struct pnp_mem *mem;
 548         struct pnp_port *port;
 549
 550         status = acpi_resource_to_address64(r, p);
 551         if (!ACPI_SUCCESS(status)) {
 552                 pnp_warn("PnPACPI: failed to convert resource type %d",
 553                          r->type);
 554                 return;
 555         }
 556
 557         if (p->address_length == 0)
 558                 return;
 559
 560         if (p->resource_type == ACPI_MEMORY_RANGE) {
 561                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 562                 if (!mem)
 563                         return;
 564                 mem->min = mem->max = p->minimum;
 565                 mem->size = p->address_length;
 566                 mem->align = 0;
 567                 mem->flags = (p->info.mem.write_protect ==
 568                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 569                     : 0;
 570                 pnp_register_mem_resource(dev, option, mem);
 571         } else if (p->resource_type == ACPI_IO_RANGE) {
 572                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 573                 if (!port)
 574                         return;
 575                 port->min = port->max = p->minimum;
 576                 port->size = p->address_length;
 577                 port->align = 0;
 578                 port->flags = PNP_PORT_FLAG_FIXED;
 579                 pnp_register_port_resource(dev, option, port);
 580         }
 581 }
 582
 583 struct acpipnp_parse_option_s {
 584         struct pnp_option *option;
 585         struct pnp_option *option_independent;
 586         struct pnp_dev *dev;
 587 };
 588
 589 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 590                                                   void *data)
 591 {
 592         int priority = 0;
 593         struct acpipnp_parse_option_s *parse_data = data;
 594         struct pnp_dev *dev = parse_data->dev;
 595         struct pnp_option *option = parse_data->option;
 596
 597         switch (res->type) {
 598         case ACPI_RESOURCE_TYPE_IRQ:
 599                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 600                 break;
 601
 602         case ACPI_RESOURCE_TYPE_DMA:
 603                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 604                 break;
 605
 606         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 607                 switch (res->data.start_dpf.compatibility_priority) {
 608                 case ACPI_GOOD_CONFIGURATION:
 609                         priority = PNP_RES_PRIORITY_PREFERRED;
 610                         break;
 611
 612                 case ACPI_ACCEPTABLE_CONFIGURATION:
 613                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 614                         break;
 615
 616                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 617                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 618                         break;
 619                 default:
 620                         priority = PNP_RES_PRIORITY_INVALID;
 621                         break;
 622                 }
 623                 /* TBD: Consider performance/robustness bits */
 624                 option = pnp_register_dependent_option(dev, priority);
 625                 if (!option)
 626                         return AE_ERROR;
 627                 parse_data->option = option;
 628                 break;
 629
 630         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 631                 /*only one EndDependentFn is allowed */
 632                 if (!parse_data->option_independent) {
 633                         dev_warn(&dev->dev, "more than one EndDependentFn "
 634                                  "in _PRS\n");
 635                         return AE_ERROR;
 636                 }
 637                 parse_data->option = parse_data->option_independent;
 638                 parse_data->option_independent = NULL;
 639                 dev_dbg(&dev->dev, "end dependent options\n");
 640                 break;
 641
 642         case ACPI_RESOURCE_TYPE_IO:
 643                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 644                 break;
 645
 646         case ACPI_RESOURCE_TYPE_FIXED_IO:
 647                 pnpacpi_parse_fixed_port_option(dev, option,
 648                                                 &res->data.fixed_io);
 649                 break;
 650
 651         case ACPI_RESOURCE_TYPE_VENDOR:
 652         case ACPI_RESOURCE_TYPE_END_TAG:
 653                 break;
 654
 655         case ACPI_RESOURCE_TYPE_MEMORY24:
 656                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 657                 break;
 658
 659         case ACPI_RESOURCE_TYPE_MEMORY32:
 660                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 661                 break;
 662
 663         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 664                 pnpacpi_parse_fixed_mem32_option(dev, option,
 665                                                  &res->data.fixed_memory32);
 666                 break;
 667
 668         case ACPI_RESOURCE_TYPE_ADDRESS16:
 669         case ACPI_RESOURCE_TYPE_ADDRESS32:
 670         case ACPI_RESOURCE_TYPE_ADDRESS64:
 671                 pnpacpi_parse_address_option(dev, option, res);
 672                 break;
 673
 674         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 675                 break;
 676
 677         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 678                 pnpacpi_parse_ext_irq_option(dev, option,
 679                                              &res->data.extended_irq);
 680                 break;
 681
 682         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 683                 break;
 684
 685         default:
 686                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 687                          res->type);
 688                 return AE_ERROR;
 689         }
 690
 691         return AE_OK;
 692 }
 693
 694 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 695 {
 696         acpi_handle handle = dev->data;
 697         acpi_status status;
 698         struct acpipnp_parse_option_s parse_data;
 699
 700         dev_dbg(&dev->dev, "parse resource options\n");
 701
 702         parse_data.option = pnp_register_independent_option(dev);
 703         if (!parse_data.option)
 704                 return -ENOMEM;
 705
 706         parse_data.option_independent = parse_data.option;
 707         parse_data.dev = dev;
 708         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 709                                      pnpacpi_option_resource, &parse_data);
 710
 711         if (ACPI_FAILURE(status)) {
 712                 if (status != AE_NOT_FOUND)
 713                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 714                 return -EPERM;
 715         }
 716         return 0;
 717 }
 718
 719 static int pnpacpi_supported_resource(struct acpi_resource *res)
 720 {
 721         switch (res->type) {
 722         case ACPI_RESOURCE_TYPE_IRQ:
 723         case ACPI_RESOURCE_TYPE_DMA:
 724         case ACPI_RESOURCE_TYPE_IO:
 725         case ACPI_RESOURCE_TYPE_FIXED_IO:
 726         case ACPI_RESOURCE_TYPE_MEMORY24:
 727         case ACPI_RESOURCE_TYPE_MEMORY32:
 728         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 729         case ACPI_RESOURCE_TYPE_ADDRESS16:
 730         case ACPI_RESOURCE_TYPE_ADDRESS32:
 731         case ACPI_RESOURCE_TYPE_ADDRESS64:
 732         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 733                 return 1;
 734         }
 735         return 0;
 736 }
 737
 738 /*
 739  * Set resource
 740  */
 741 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 742                                            void *data)
 743 {
 744         int *res_cnt = data;
 745
 746         if (pnpacpi_supported_resource(res))
 747                 (*res_cnt)++;
 748         return AE_OK;
 749 }
 750
 751 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 752 {
 753         struct acpi_resource **resource = data;
 754
 755         if (pnpacpi_supported_resource(res)) {
 756                 (*resource)->type = res->type;
 757                 (*resource)->length = sizeof(struct acpi_resource);
 758                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
 759                         (*resource)->data.irq.descriptor_length =
 760                                         res->data.irq.descriptor_length;
 761                 (*resource)++;
 762         }
 763
 764         return AE_OK;
 765 }
 766
 767 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 768                                     struct acpi_buffer *buffer)
 769 {
 770         acpi_handle handle = dev->data;
 771         struct acpi_resource *resource;
 772         int res_cnt = 0;
 773         acpi_status status;
 774
 775         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 776                                      pnpacpi_count_resources, &res_cnt);
 777         if (ACPI_FAILURE(status)) {
 778                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 779                 return -EINVAL;
 780         }
 781         if (!res_cnt)
 782                 return -EINVAL;
 783         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 784         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 785         if (!buffer->pointer)
 786                 return -ENOMEM;
 787
 788         resource = (struct acpi_resource *)buffer->pointer;
 789         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 790                                      pnpacpi_type_resources, &resource);
 791         if (ACPI_FAILURE(status)) {
 792                 kfree(buffer->pointer);
 793                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 794                 return -EINVAL;
 795         }
 796         /* resource will pointer the end resource now */
 797         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 798
 799         return 0;
 800 }
 801
 802 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 803                                struct acpi_resource *resource,
 804                                struct resource *p)
 805 {
 806         struct acpi_resource_irq *irq = &resource->data.irq;
 807         int triggering, polarity, shareable;
 808
 809         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 810         irq->triggering = triggering;
 811         irq->polarity = polarity;
 812         irq->sharable = shareable;
 813         irq->interrupt_count = 1;
 814         irq->interrupts[0] = p->start;
 815
 816         dev_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
 817                 (int) p->start,
 818                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 819                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 820                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
 821                 irq->descriptor_length);
 822 }
 823
 824 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 825                                    struct acpi_resource *resource,
 826                                    struct resource *p)
 827 {
 828         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 829         int triggering, polarity, shareable;
 830
 831         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 832         extended_irq->producer_consumer = ACPI_CONSUMER;
 833         extended_irq->triggering = triggering;
 834         extended_irq->polarity = polarity;
 835         extended_irq->sharable = shareable;
 836         extended_irq->interrupt_count = 1;
 837         extended_irq->interrupts[0] = p->start;
 838
 839         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 840                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 841                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 842                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 843 }
 844
 845 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 846                                struct acpi_resource *resource,
 847                                struct resource *p)
 848 {
 849         struct acpi_resource_dma *dma = &resource->data.dma;
 850
 851         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 852         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 853         case IORESOURCE_DMA_TYPEA:
 854                 dma->type = ACPI_TYPE_A;
 855                 break;
 856         case IORESOURCE_DMA_TYPEB:
 857                 dma->type = ACPI_TYPE_B;
 858                 break;
 859         case IORESOURCE_DMA_TYPEF:
 860                 dma->type = ACPI_TYPE_F;
 861                 break;
 862         default:
 863                 dma->type = ACPI_COMPATIBILITY;
 864         }
 865
 866         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 867         case IORESOURCE_DMA_8BIT:
 868                 dma->transfer = ACPI_TRANSFER_8;
 869                 break;
 870         case IORESOURCE_DMA_8AND16BIT:
 871                 dma->transfer = ACPI_TRANSFER_8_16;
 872                 break;
 873         default:
 874                 dma->transfer = ACPI_TRANSFER_16;
 875         }
 876
 877         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 878         dma->channel_count = 1;
 879         dma->channels[0] = p->start;
 880
 881         dev_dbg(&dev->dev, "  encode dma %d "
 882                 "type %#x transfer %#x master %d\n",
 883                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 884 }
 885
 886 static void pnpacpi_encode_io(struct pnp_dev *dev,
 887                               struct acpi_resource *resource,
 888                               struct resource *p)
 889 {
 890         struct acpi_resource_io *io = &resource->data.io;
 891
 892         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 893         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 894             ACPI_DECODE_16 : ACPI_DECODE_10;
 895         io->minimum = p->start;
 896         io->maximum = p->end;
 897         io->alignment = 0;      /* Correct? */
 898         io->address_length = p->end - p->start + 1;
 899
 900         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 901                 (unsigned long long) p->start, (unsigned long long) p->end,
 902                 io->io_decode);
 903 }
 904
 905 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 906                                     struct acpi_resource *resource,
 907                                     struct resource *p)
 908 {
 909         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 910
 911         fixed_io->address = p->start;
 912         fixed_io->address_length = p->end - p->start + 1;
 913
 914         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 915                 (unsigned long long) p->start, (unsigned long long) p->end);
 916 }
 917
 918 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 919                                  struct acpi_resource *resource,
 920                                  struct resource *p)
 921 {
 922         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 923
 924         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 925         memory24->write_protect =
 926             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 927             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 928         memory24->minimum = p->start;
 929         memory24->maximum = p->end;
 930         memory24->alignment = 0;
 931         memory24->address_length = p->end - p->start + 1;
 932
 933         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 934                 (unsigned long long) p->start, (unsigned long long) p->end,
 935                 memory24->write_protect);
 936 }
 937
 938 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 939                                  struct acpi_resource *resource,
 940                                  struct resource *p)
 941 {
 942         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 943
 944         memory32->write_protect =
 945             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 946             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 947         memory32->minimum = p->start;
 948         memory32->maximum = p->end;
 949         memory32->alignment = 0;
 950         memory32->address_length = p->end - p->start + 1;
 951
 952         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 953                 (unsigned long long) p->start, (unsigned long long) p->end,
 954                 memory32->write_protect);
 955 }
 956
 957 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 958                                        struct acpi_resource *resource,
 959                                        struct resource *p)
 960 {
 961         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 962
 963         fixed_memory32->write_protect =
 964             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 965             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 966         fixed_memory32->address = p->start;
 967         fixed_memory32->address_length = p->end - p->start + 1;
 968
 969         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
 970                 "write_protect %#x\n",
 971                 (unsigned long long) p->start, (unsigned long long) p->end,
 972                 fixed_memory32->write_protect);
 973 }
 974
 975 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
 976 {
 977         int i = 0;
 978         /* pnpacpi_build_resource_template allocates extra mem */
 979         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 980         struct acpi_resource *resource = buffer->pointer;
 981         int port = 0, irq = 0, dma = 0, mem = 0;
 982
 983         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
 984         while (i < res_cnt) {
 985                 switch (resource->type) {
 986                 case ACPI_RESOURCE_TYPE_IRQ:
 987                         pnpacpi_encode_irq(dev, resource,
 988                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 989                         irq++;
 990                         break;
 991
 992                 case ACPI_RESOURCE_TYPE_DMA:
 993                         pnpacpi_encode_dma(dev, resource,
 994                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
 995                         dma++;
 996                         break;
 997                 case ACPI_RESOURCE_TYPE_IO:
 998                         pnpacpi_encode_io(dev, resource,
 999                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1000                         port++;
1001                         break;
1002                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1003                         pnpacpi_encode_fixed_io(dev, resource,
1004                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1005                         port++;
1006                         break;
1007                 case ACPI_RESOURCE_TYPE_MEMORY24:
1008                         pnpacpi_encode_mem24(dev, resource,
1009                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1010                         mem++;
1011                         break;
1012                 case ACPI_RESOURCE_TYPE_MEMORY32:
1013                         pnpacpi_encode_mem32(dev, resource,
1014                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1015                         mem++;
1016                         break;
1017                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1018                         pnpacpi_encode_fixed_mem32(dev, resource,
1019                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1020                         mem++;
1021                         break;
1022                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1023                         pnpacpi_encode_ext_irq(dev, resource,
1024                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1025                         irq++;
1026                         break;
1027                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1028                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1029                 case ACPI_RESOURCE_TYPE_VENDOR:
1030                 case ACPI_RESOURCE_TYPE_END_TAG:
1031                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1032                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1033                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1034                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1035                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1036                 default:        /* other type */
1037                         dev_warn(&dev->dev, "can't encode unknown resource "
1038                                  "type %d\n", resource->type);
1039                         return -EINVAL;
1040                 }
1041                 resource++;
1042                 i++;
1043         }
1044         return 0;
1045 }