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 <linux/pnp.h>
  25 #include "../base.h"
  26 #include "pnpacpi.h"
  27
  28 #ifdef CONFIG_IA64
  29 #define valid_IRQ(i) (1)
  30 #else
  31 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  32 #endif
  33
  34 /*
  35  * Allocated Resources
  36  */
  37 static int irq_flags(int triggering, int polarity, int shareable)
  38 {
  39         int flags;
  40
  41         if (triggering == ACPI_LEVEL_SENSITIVE) {
  42                 if (polarity == ACPI_ACTIVE_LOW)
  43                         flags = IORESOURCE_IRQ_LOWLEVEL;
  44                 else
  45                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  46         } else {
  47                 if (polarity == ACPI_ACTIVE_LOW)
  48                         flags = IORESOURCE_IRQ_LOWEDGE;
  49                 else
  50                         flags = IORESOURCE_IRQ_HIGHEDGE;
  51         }
  52
  53         if (shareable == ACPI_SHARED)
  54                 flags |= IORESOURCE_IRQ_SHAREABLE;
  55
  56         return flags;
  57 }
  58
  59 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
  60                              int *polarity, int *shareable)
  61 {
  62         switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
  63                          IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
  64         case IORESOURCE_IRQ_LOWLEVEL:
  65                 *triggering = ACPI_LEVEL_SENSITIVE;
  66                 *polarity = ACPI_ACTIVE_LOW;
  67                 break;
  68         case IORESOURCE_IRQ_HIGHLEVEL:
  69                 *triggering = ACPI_LEVEL_SENSITIVE;
  70                 *polarity = ACPI_ACTIVE_HIGH;
  71                 break;
  72         case IORESOURCE_IRQ_LOWEDGE:
  73                 *triggering = ACPI_EDGE_SENSITIVE;
  74                 *polarity = ACPI_ACTIVE_LOW;
  75                 break;
  76         case IORESOURCE_IRQ_HIGHEDGE:
  77                 *triggering = ACPI_EDGE_SENSITIVE;
  78                 *polarity = ACPI_ACTIVE_HIGH;
  79                 break;
  80         default:
  81                 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
  82                         flags);
  83                 *triggering = ACPI_EDGE_SENSITIVE;
  84                 *polarity = ACPI_ACTIVE_HIGH;
  85                 break;
  86         }
  87
  88         if (flags & IORESOURCE_IRQ_SHAREABLE)
  89                 *shareable = ACPI_SHARED;
  90         else
  91                 *shareable = ACPI_EXCLUSIVE;
  92 }
  93
  94 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  95                                                 u32 gsi, int triggering,
  96                                                 int polarity, int shareable)
  97 {
  98         int irq, flags;
  99         int p, t;
 100
 101         if (!valid_IRQ(gsi)) {
 102                 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
 103                 return;
 104         }
 105
 106         /*
 107          * in IO-APIC mode, use overrided attribute. Two reasons:
 108          * 1. BIOS bug in DSDT
 109          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 110          */
 111         if (!acpi_get_override_irq(gsi, &t, &p)) {
 112                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 113                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 114
 115                 if (triggering != t || polarity != p) {
 116                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 117                                 gsi, t ? "edge":"level", p ? "low":"high");
 118                         triggering = t;
 119                         polarity = p;
 120                 }
 121         }
 122
 123         flags = irq_flags(triggering, polarity, shareable);
 124         irq = acpi_register_gsi(gsi, triggering, polarity);
 125         if (irq >= 0)
 126                 pcibios_penalize_isa_irq(irq, 1);
 127         else
 128                 flags |= IORESOURCE_DISABLED;
 129
 130         pnp_add_irq_resource(dev, irq, flags);
 131 }
 132
 133 static int dma_flags(int type, int bus_master, int transfer)
 134 {
 135         int flags = 0;
 136
 137         if (bus_master)
 138                 flags |= IORESOURCE_DMA_MASTER;
 139         switch (type) {
 140         case ACPI_COMPATIBILITY:
 141                 flags |= IORESOURCE_DMA_COMPATIBLE;
 142                 break;
 143         case ACPI_TYPE_A:
 144                 flags |= IORESOURCE_DMA_TYPEA;
 145                 break;
 146         case ACPI_TYPE_B:
 147                 flags |= IORESOURCE_DMA_TYPEB;
 148                 break;
 149         case ACPI_TYPE_F:
 150                 flags |= IORESOURCE_DMA_TYPEF;
 151                 break;
 152         default:
 153                 /* Set a default value ? */
 154                 flags |= IORESOURCE_DMA_COMPATIBLE;
 155                 pnp_err("Invalid DMA type");
 156         }
 157         switch (transfer) {
 158         case ACPI_TRANSFER_8:
 159                 flags |= IORESOURCE_DMA_8BIT;
 160                 break;
 161         case ACPI_TRANSFER_8_16:
 162                 flags |= IORESOURCE_DMA_8AND16BIT;
 163                 break;
 164         case ACPI_TRANSFER_16:
 165                 flags |= IORESOURCE_DMA_16BIT;
 166                 break;
 167         default:
 168                 /* Set a default value ? */
 169                 flags |= IORESOURCE_DMA_8AND16BIT;
 170                 pnp_err("Invalid DMA transfer type");
 171         }
 172
 173         return flags;
 174 }
 175
 176 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 177                                                u64 len, int io_decode)
 178 {
 179         int flags = 0;
 180         u64 end = start + len - 1;
 181
 182         if (io_decode == ACPI_DECODE_16)
 183                 flags |= IORESOURCE_IO_16BIT_ADDR;
 184         if (len == 0 || end >= 0x10003)
 185                 flags |= IORESOURCE_DISABLED;
 186
 187         pnp_add_io_resource(dev, start, end, flags);
 188 }
 189
 190 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 191                                                 u64 start, u64 len,
 192                                                 int write_protect)
 193 {
 194         int flags = 0;
 195         u64 end = start + len - 1;
 196
 197         if (len == 0)
 198                 flags |= IORESOURCE_DISABLED;
 199         if (write_protect == ACPI_READ_WRITE_MEMORY)
 200                 flags |= IORESOURCE_MEM_WRITEABLE;
 201
 202         pnp_add_mem_resource(dev, start, end, flags);
 203 }
 204
 205 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 206                                                   struct acpi_resource *res)
 207 {
 208         struct acpi_resource_address64 addr, *p = &addr;
 209         acpi_status status;
 210
 211         status = acpi_resource_to_address64(res, p);
 212         if (!ACPI_SUCCESS(status)) {
 213                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 214                          res->type);
 215                 return;
 216         }
 217
 218         if (p->producer_consumer == ACPI_PRODUCER)
 219                 return;
 220
 221         if (p->resource_type == ACPI_MEMORY_RANGE)
 222                 pnpacpi_parse_allocated_memresource(dev,
 223                         p->minimum, p->address_length,
 224                         p->info.mem.write_protect);
 225         else if (p->resource_type == ACPI_IO_RANGE)
 226                 pnpacpi_parse_allocated_ioresource(dev,
 227                         p->minimum, p->address_length,
 228                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 229                                 ACPI_DECODE_16);
 230 }
 231
 232 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 233                                               void *data)
 234 {
 235         struct pnp_dev *dev = data;
 236         struct acpi_resource_irq *irq;
 237         struct acpi_resource_dma *dma;
 238         struct acpi_resource_io *io;
 239         struct acpi_resource_fixed_io *fixed_io;
 240         struct acpi_resource_memory24 *memory24;
 241         struct acpi_resource_memory32 *memory32;
 242         struct acpi_resource_fixed_memory32 *fixed_memory32;
 243         struct acpi_resource_extended_irq *extended_irq;
 244         int i, flags;
 245
 246         switch (res->type) {
 247         case ACPI_RESOURCE_TYPE_IRQ:
 248                 /*
 249                  * Per spec, only one interrupt per descriptor is allowed in
 250                  * _CRS, but some firmware violates this, so parse them all.
 251                  */
 252                 irq = &res->data.irq;
 253                 if (irq->interrupt_count == 0)
 254                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 255                 else {
 256                         for (i = 0; i < irq->interrupt_count; i++) {
 257                                 pnpacpi_parse_allocated_irqresource(dev,
 258                                         irq->interrupts[i],
 259                                         irq->triggering,
 260                                         irq->polarity,
 261                                     irq->sharable);
 262                         }
 263
 264                         /*
 265                          * The IRQ encoder puts a single interrupt in each
 266                          * descriptor, so if a _CRS descriptor has more than
 267                          * one interrupt, we won't be able to re-encode it.
 268                          */
 269                         if (pnp_can_write(dev) && irq->interrupt_count > 1) {
 270                                 dev_warn(&dev->dev, "multiple interrupts in "
 271                                          "_CRS descriptor; configuration can't "
 272                                          "be changed\n");
 273                                 dev->capabilities &= ~PNP_WRITE;
 274                         }
 275                 }
 276                 break;
 277
 278         case ACPI_RESOURCE_TYPE_DMA:
 279                 dma = &res->data.dma;
 280                 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
 281                         flags = dma_flags(dma->type, dma->bus_master,
 282                                           dma->transfer);
 283                 else
 284                         flags = IORESOURCE_DISABLED;
 285                 pnp_add_dma_resource(dev, dma->channels[0], flags);
 286                 break;
 287
 288         case ACPI_RESOURCE_TYPE_IO:
 289                 io = &res->data.io;
 290                 pnpacpi_parse_allocated_ioresource(dev,
 291                         io->minimum,
 292                         io->address_length,
 293                         io->io_decode);
 294                 break;
 295
 296         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 297         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 298                 break;
 299
 300         case ACPI_RESOURCE_TYPE_FIXED_IO:
 301                 fixed_io = &res->data.fixed_io;
 302                 pnpacpi_parse_allocated_ioresource(dev,
 303                         fixed_io->address,
 304                         fixed_io->address_length,
 305                         ACPI_DECODE_10);
 306                 break;
 307
 308         case ACPI_RESOURCE_TYPE_VENDOR:
 309                 break;
 310
 311         case ACPI_RESOURCE_TYPE_END_TAG:
 312                 break;
 313
 314         case ACPI_RESOURCE_TYPE_MEMORY24:
 315                 memory24 = &res->data.memory24;
 316                 pnpacpi_parse_allocated_memresource(dev,
 317                         memory24->minimum,
 318                         memory24->address_length,
 319                         memory24->write_protect);
 320                 break;
 321         case ACPI_RESOURCE_TYPE_MEMORY32:
 322                 memory32 = &res->data.memory32;
 323                 pnpacpi_parse_allocated_memresource(dev,
 324                         memory32->minimum,
 325                         memory32->address_length,
 326                         memory32->write_protect);
 327                 break;
 328         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 329                 fixed_memory32 = &res->data.fixed_memory32;
 330                 pnpacpi_parse_allocated_memresource(dev,
 331                         fixed_memory32->address,
 332                         fixed_memory32->address_length,
 333                         fixed_memory32->write_protect);
 334                 break;
 335         case ACPI_RESOURCE_TYPE_ADDRESS16:
 336         case ACPI_RESOURCE_TYPE_ADDRESS32:
 337         case ACPI_RESOURCE_TYPE_ADDRESS64:
 338                 pnpacpi_parse_allocated_address_space(dev, res);
 339                 break;
 340
 341         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 342                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 343                         return AE_OK;
 344                 break;
 345
 346         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 347                 extended_irq = &res->data.extended_irq;
 348                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 349                         return AE_OK;
 350
 351                 if (extended_irq->interrupt_count == 0)
 352                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 353                 else {
 354                         for (i = 0; i < extended_irq->interrupt_count; i++) {
 355                                 pnpacpi_parse_allocated_irqresource(dev,
 356                                         extended_irq->interrupts[i],
 357                                         extended_irq->triggering,
 358                                         extended_irq->polarity,
 359                                         extended_irq->sharable);
 360                         }
 361
 362                         /*
 363                          * The IRQ encoder puts a single interrupt in each
 364                          * descriptor, so if a _CRS descriptor has more than
 365                          * one interrupt, we won't be able to re-encode it.
 366                          */
 367                         if (pnp_can_write(dev) &&
 368                             extended_irq->interrupt_count > 1) {
 369                                 dev_warn(&dev->dev, "multiple interrupts in "
 370                                          "_CRS descriptor; configuration can't "
 371                                          "be changed\n");
 372                                 dev->capabilities &= ~PNP_WRITE;
 373                         }
 374                 }
 375                 break;
 376
 377         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 378                 break;
 379
 380         default:
 381                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 382                          res->type);
 383                 return AE_ERROR;
 384         }
 385
 386         return AE_OK;
 387 }
 388
 389 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 390 {
 391         acpi_handle handle = dev->data;
 392         acpi_status status;
 393
 394         dev_dbg(&dev->dev, "parse allocated resources\n");
 395
 396         pnp_init_resources(dev);
 397
 398         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 399                                      pnpacpi_allocated_resource, dev);
 400
 401         if (ACPI_FAILURE(status)) {
 402                 if (status != AE_NOT_FOUND)
 403                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 404                 return -EPERM;
 405         }
 406         return 0;
 407 }
 408
 409 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 410                                             struct pnp_option *option,
 411                                             struct acpi_resource_dma *p)
 412 {
 413         int i;
 414         struct pnp_dma *dma;
 415
 416         if (p->channel_count == 0)
 417                 return;
 418         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 419         if (!dma)
 420                 return;
 421
 422         for (i = 0; i < p->channel_count; i++)
 423                 dma->map |= 1 << p->channels[i];
 424
 425         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 426
 427         pnp_register_dma_resource(dev, option, dma);
 428 }
 429
 430 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 431                                             struct pnp_option *option,
 432                                             struct acpi_resource_irq *p)
 433 {
 434         int i;
 435         struct pnp_irq *irq;
 436
 437         if (p->interrupt_count == 0)
 438                 return;
 439         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 440         if (!irq)
 441                 return;
 442
 443         for (i = 0; i < p->interrupt_count; i++)
 444                 if (p->interrupts[i])
 445                         __set_bit(p->interrupts[i], irq->map.bits);
 446         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 447
 448         pnp_register_irq_resource(dev, option, irq);
 449 }
 450
 451 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 452                                                 struct pnp_option *option,
 453                                         struct acpi_resource_extended_irq *p)
 454 {
 455         int i;
 456         struct pnp_irq *irq;
 457
 458         if (p->interrupt_count == 0)
 459                 return;
 460         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 461         if (!irq)
 462                 return;
 463
 464         for (i = 0; i < p->interrupt_count; i++)
 465                 if (p->interrupts[i])
 466                         __set_bit(p->interrupts[i], irq->map.bits);
 467         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 468
 469         pnp_register_irq_resource(dev, option, irq);
 470 }
 471
 472 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 473                                              struct pnp_option *option,
 474                                              struct acpi_resource_io *io)
 475 {
 476         struct pnp_port *port;
 477
 478         if (io->address_length == 0)
 479                 return;
 480         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 481         if (!port)
 482                 return;
 483         port->min = io->minimum;
 484         port->max = io->maximum;
 485         port->align = io->alignment;
 486         port->size = io->address_length;
 487         port->flags = ACPI_DECODE_16 == io->io_decode ?
 488             IORESOURCE_IO_16BIT_ADDR : 0;
 489         pnp_register_port_resource(dev, option, port);
 490 }
 491
 492 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 493                                                    struct pnp_option *option,
 494                                         struct acpi_resource_fixed_io *io)
 495 {
 496         struct pnp_port *port;
 497
 498         if (io->address_length == 0)
 499                 return;
 500         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 501         if (!port)
 502                 return;
 503         port->min = port->max = io->address;
 504         port->size = io->address_length;
 505         port->align = 0;
 506         port->flags = IORESOURCE_IO_FIXED;
 507         pnp_register_port_resource(dev, option, port);
 508 }
 509
 510 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 511                                               struct pnp_option *option,
 512                                               struct acpi_resource_memory24 *p)
 513 {
 514         struct pnp_mem *mem;
 515
 516         if (p->address_length == 0)
 517                 return;
 518         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 519         if (!mem)
 520                 return;
 521         mem->min = p->minimum;
 522         mem->max = p->maximum;
 523         mem->align = p->alignment;
 524         mem->size = p->address_length;
 525
 526         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 527             IORESOURCE_MEM_WRITEABLE : 0;
 528
 529         pnp_register_mem_resource(dev, option, mem);
 530 }
 531
 532 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 533                                               struct pnp_option *option,
 534                                               struct acpi_resource_memory32 *p)
 535 {
 536         struct pnp_mem *mem;
 537
 538         if (p->address_length == 0)
 539                 return;
 540         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 541         if (!mem)
 542                 return;
 543         mem->min = p->minimum;
 544         mem->max = p->maximum;
 545         mem->align = p->alignment;
 546         mem->size = p->address_length;
 547
 548         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 549             IORESOURCE_MEM_WRITEABLE : 0;
 550
 551         pnp_register_mem_resource(dev, option, mem);
 552 }
 553
 554 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 555                                                     struct pnp_option *option,
 556                                         struct acpi_resource_fixed_memory32 *p)
 557 {
 558         struct pnp_mem *mem;
 559
 560         if (p->address_length == 0)
 561                 return;
 562         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 563         if (!mem)
 564                 return;
 565         mem->min = mem->max = p->address;
 566         mem->size = p->address_length;
 567         mem->align = 0;
 568
 569         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 570             IORESOURCE_MEM_WRITEABLE : 0;
 571
 572         pnp_register_mem_resource(dev, option, mem);
 573 }
 574
 575 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 576                                                 struct pnp_option *option,
 577                                                 struct acpi_resource *r)
 578 {
 579         struct acpi_resource_address64 addr, *p = &addr;
 580         acpi_status status;
 581         struct pnp_mem *mem;
 582         struct pnp_port *port;
 583
 584         status = acpi_resource_to_address64(r, p);
 585         if (!ACPI_SUCCESS(status)) {
 586                 pnp_warn("PnPACPI: failed to convert resource type %d",
 587                          r->type);
 588                 return;
 589         }
 590
 591         if (p->address_length == 0)
 592                 return;
 593
 594         if (p->resource_type == ACPI_MEMORY_RANGE) {
 595                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 596                 if (!mem)
 597                         return;
 598                 mem->min = mem->max = p->minimum;
 599                 mem->size = p->address_length;
 600                 mem->align = 0;
 601                 mem->flags = (p->info.mem.write_protect ==
 602                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 603                     : 0;
 604                 pnp_register_mem_resource(dev, option, mem);
 605         } else if (p->resource_type == ACPI_IO_RANGE) {
 606                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 607                 if (!port)
 608                         return;
 609                 port->min = port->max = p->minimum;
 610                 port->size = p->address_length;
 611                 port->align = 0;
 612                 port->flags = IORESOURCE_IO_FIXED;
 613                 pnp_register_port_resource(dev, option, port);
 614         }
 615 }
 616
 617 struct acpipnp_parse_option_s {
 618         struct pnp_option *option;
 619         struct pnp_option *option_independent;
 620         struct pnp_dev *dev;
 621 };
 622
 623 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 624                                                   void *data)
 625 {
 626         int priority = 0;
 627         struct acpipnp_parse_option_s *parse_data = data;
 628         struct pnp_dev *dev = parse_data->dev;
 629         struct pnp_option *option = parse_data->option;
 630
 631         switch (res->type) {
 632         case ACPI_RESOURCE_TYPE_IRQ:
 633                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 634                 break;
 635
 636         case ACPI_RESOURCE_TYPE_DMA:
 637                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 638                 break;
 639
 640         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 641                 switch (res->data.start_dpf.compatibility_priority) {
 642                 case ACPI_GOOD_CONFIGURATION:
 643                         priority = PNP_RES_PRIORITY_PREFERRED;
 644                         break;
 645
 646                 case ACPI_ACCEPTABLE_CONFIGURATION:
 647                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 648                         break;
 649
 650                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 651                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 652                         break;
 653                 default:
 654                         priority = PNP_RES_PRIORITY_INVALID;
 655                         break;
 656                 }
 657                 /* TBD: Consider performance/robustness bits */
 658                 option = pnp_register_dependent_option(dev, priority);
 659                 if (!option)
 660                         return AE_ERROR;
 661                 parse_data->option = option;
 662                 break;
 663
 664         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 665                 /*only one EndDependentFn is allowed */
 666                 if (!parse_data->option_independent) {
 667                         dev_warn(&dev->dev, "more than one EndDependentFn "
 668                                  "in _PRS\n");
 669                         return AE_ERROR;
 670                 }
 671                 parse_data->option = parse_data->option_independent;
 672                 parse_data->option_independent = NULL;
 673                 dev_dbg(&dev->dev, "end dependent options\n");
 674                 break;
 675
 676         case ACPI_RESOURCE_TYPE_IO:
 677                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 678                 break;
 679
 680         case ACPI_RESOURCE_TYPE_FIXED_IO:
 681                 pnpacpi_parse_fixed_port_option(dev, option,
 682                                                 &res->data.fixed_io);
 683                 break;
 684
 685         case ACPI_RESOURCE_TYPE_VENDOR:
 686         case ACPI_RESOURCE_TYPE_END_TAG:
 687                 break;
 688
 689         case ACPI_RESOURCE_TYPE_MEMORY24:
 690                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 691                 break;
 692
 693         case ACPI_RESOURCE_TYPE_MEMORY32:
 694                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 695                 break;
 696
 697         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 698                 pnpacpi_parse_fixed_mem32_option(dev, option,
 699                                                  &res->data.fixed_memory32);
 700                 break;
 701
 702         case ACPI_RESOURCE_TYPE_ADDRESS16:
 703         case ACPI_RESOURCE_TYPE_ADDRESS32:
 704         case ACPI_RESOURCE_TYPE_ADDRESS64:
 705                 pnpacpi_parse_address_option(dev, option, res);
 706                 break;
 707
 708         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 709                 break;
 710
 711         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 712                 pnpacpi_parse_ext_irq_option(dev, option,
 713                                              &res->data.extended_irq);
 714                 break;
 715
 716         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 717                 break;
 718
 719         default:
 720                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 721                          res->type);
 722                 return AE_ERROR;
 723         }
 724
 725         return AE_OK;
 726 }
 727
 728 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 729 {
 730         acpi_handle handle = dev->data;
 731         acpi_status status;
 732         struct acpipnp_parse_option_s parse_data;
 733
 734         dev_dbg(&dev->dev, "parse resource options\n");
 735
 736         parse_data.option = pnp_register_independent_option(dev);
 737         if (!parse_data.option)
 738                 return -ENOMEM;
 739
 740         parse_data.option_independent = parse_data.option;
 741         parse_data.dev = dev;
 742         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 743                                      pnpacpi_option_resource, &parse_data);
 744
 745         if (ACPI_FAILURE(status)) {
 746                 if (status != AE_NOT_FOUND)
 747                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 748                 return -EPERM;
 749         }
 750         return 0;
 751 }
 752
 753 static int pnpacpi_supported_resource(struct acpi_resource *res)
 754 {
 755         switch (res->type) {
 756         case ACPI_RESOURCE_TYPE_IRQ:
 757         case ACPI_RESOURCE_TYPE_DMA:
 758         case ACPI_RESOURCE_TYPE_IO:
 759         case ACPI_RESOURCE_TYPE_FIXED_IO:
 760         case ACPI_RESOURCE_TYPE_MEMORY24:
 761         case ACPI_RESOURCE_TYPE_MEMORY32:
 762         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 763         case ACPI_RESOURCE_TYPE_ADDRESS16:
 764         case ACPI_RESOURCE_TYPE_ADDRESS32:
 765         case ACPI_RESOURCE_TYPE_ADDRESS64:
 766         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 767                 return 1;
 768         }
 769         return 0;
 770 }
 771
 772 /*
 773  * Set resource
 774  */
 775 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 776                                            void *data)
 777 {
 778         int *res_cnt = data;
 779
 780         if (pnpacpi_supported_resource(res))
 781                 (*res_cnt)++;
 782         return AE_OK;
 783 }
 784
 785 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 786 {
 787         struct acpi_resource **resource = data;
 788
 789         if (pnpacpi_supported_resource(res)) {
 790                 (*resource)->type = res->type;
 791                 (*resource)->length = sizeof(struct acpi_resource);
 792                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
 793                         (*resource)->data.irq.descriptor_length =
 794                                         res->data.irq.descriptor_length;
 795                 (*resource)++;
 796         }
 797
 798         return AE_OK;
 799 }
 800
 801 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 802                                     struct acpi_buffer *buffer)
 803 {
 804         acpi_handle handle = dev->data;
 805         struct acpi_resource *resource;
 806         int res_cnt = 0;
 807         acpi_status status;
 808
 809         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 810                                      pnpacpi_count_resources, &res_cnt);
 811         if (ACPI_FAILURE(status)) {
 812                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 813                 return -EINVAL;
 814         }
 815         if (!res_cnt)
 816                 return -EINVAL;
 817         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 818         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 819         if (!buffer->pointer)
 820                 return -ENOMEM;
 821
 822         resource = (struct acpi_resource *)buffer->pointer;
 823         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 824                                      pnpacpi_type_resources, &resource);
 825         if (ACPI_FAILURE(status)) {
 826                 kfree(buffer->pointer);
 827                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 828                 return -EINVAL;
 829         }
 830         /* resource will pointer the end resource now */
 831         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 832
 833         return 0;
 834 }
 835
 836 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 837                                struct acpi_resource *resource,
 838                                struct resource *p)
 839 {
 840         struct acpi_resource_irq *irq = &resource->data.irq;
 841         int triggering, polarity, shareable;
 842
 843         if (!pnp_resource_enabled(p)) {
 844                 irq->interrupt_count = 0;
 845                 dev_dbg(&dev->dev, "  encode irq (%s)\n",
 846                         p ? "disabled" : "missing");
 847                 return;
 848         }
 849
 850         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 851         irq->triggering = triggering;
 852         irq->polarity = polarity;
 853         irq->sharable = shareable;
 854         irq->interrupt_count = 1;
 855         irq->interrupts[0] = p->start;
 856
 857         dev_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
 858                 (int) p->start,
 859                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 860                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 861                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
 862                 irq->descriptor_length);
 863 }
 864
 865 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 866                                    struct acpi_resource *resource,
 867                                    struct resource *p)
 868 {
 869         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 870         int triggering, polarity, shareable;
 871
 872         if (!pnp_resource_enabled(p)) {
 873                 extended_irq->interrupt_count = 0;
 874                 dev_dbg(&dev->dev, "  encode extended irq (%s)\n",
 875                         p ? "disabled" : "missing");
 876                 return;
 877         }
 878
 879         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 880         extended_irq->producer_consumer = ACPI_CONSUMER;
 881         extended_irq->triggering = triggering;
 882         extended_irq->polarity = polarity;
 883         extended_irq->sharable = shareable;
 884         extended_irq->interrupt_count = 1;
 885         extended_irq->interrupts[0] = p->start;
 886
 887         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 888                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 889                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 890                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 891 }
 892
 893 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 894                                struct acpi_resource *resource,
 895                                struct resource *p)
 896 {
 897         struct acpi_resource_dma *dma = &resource->data.dma;
 898
 899         if (!pnp_resource_enabled(p)) {
 900                 dma->channel_count = 0;
 901                 dev_dbg(&dev->dev, "  encode dma (%s)\n",
 902                         p ? "disabled" : "missing");
 903                 return;
 904         }
 905
 906         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 907         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 908         case IORESOURCE_DMA_TYPEA:
 909                 dma->type = ACPI_TYPE_A;
 910                 break;
 911         case IORESOURCE_DMA_TYPEB:
 912                 dma->type = ACPI_TYPE_B;
 913                 break;
 914         case IORESOURCE_DMA_TYPEF:
 915                 dma->type = ACPI_TYPE_F;
 916                 break;
 917         default:
 918                 dma->type = ACPI_COMPATIBILITY;
 919         }
 920
 921         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 922         case IORESOURCE_DMA_8BIT:
 923                 dma->transfer = ACPI_TRANSFER_8;
 924                 break;
 925         case IORESOURCE_DMA_8AND16BIT:
 926                 dma->transfer = ACPI_TRANSFER_8_16;
 927                 break;
 928         default:
 929                 dma->transfer = ACPI_TRANSFER_16;
 930         }
 931
 932         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 933         dma->channel_count = 1;
 934         dma->channels[0] = p->start;
 935
 936         dev_dbg(&dev->dev, "  encode dma %d "
 937                 "type %#x transfer %#x master %d\n",
 938                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 939 }
 940
 941 static void pnpacpi_encode_io(struct pnp_dev *dev,
 942                               struct acpi_resource *resource,
 943                               struct resource *p)
 944 {
 945         struct acpi_resource_io *io = &resource->data.io;
 946
 947         if (pnp_resource_enabled(p)) {
 948                 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
 949                 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
 950                     ACPI_DECODE_16 : ACPI_DECODE_10;
 951                 io->minimum = p->start;
 952                 io->maximum = p->end;
 953                 io->alignment = 0;      /* Correct? */
 954                 io->address_length = p->end - p->start + 1;
 955         } else {
 956                 io->minimum = 0;
 957                 io->address_length = 0;
 958         }
 959
 960         dev_dbg(&dev->dev, "  encode io %#x-%#x decode %#x\n", io->minimum,
 961                 io->minimum + io->address_length - 1, io->io_decode);
 962 }
 963
 964 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 965                                     struct acpi_resource *resource,
 966                                     struct resource *p)
 967 {
 968         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 969
 970         if (pnp_resource_enabled(p)) {
 971                 fixed_io->address = p->start;
 972                 fixed_io->address_length = p->end - p->start + 1;
 973         } else {
 974                 fixed_io->address = 0;
 975                 fixed_io->address_length = 0;
 976         }
 977
 978         dev_dbg(&dev->dev, "  encode fixed_io %#x-%#x\n", fixed_io->address,
 979                 fixed_io->address + fixed_io->address_length - 1);
 980 }
 981
 982 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 983                                  struct acpi_resource *resource,
 984                                  struct resource *p)
 985 {
 986         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 987
 988         if (pnp_resource_enabled(p)) {
 989                 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
 990                 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
 991                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 992                 memory24->minimum = p->start;
 993                 memory24->maximum = p->end;
 994                 memory24->alignment = 0;
 995                 memory24->address_length = p->end - p->start + 1;
 996         } else {
 997                 memory24->minimum = 0;
 998                 memory24->address_length = 0;
 999         }
1000
1001         dev_dbg(&dev->dev, "  encode mem24 %#x-%#x write_protect %#x\n",
1002                 memory24->minimum,
1003                 memory24->minimum + memory24->address_length - 1,
1004                 memory24->write_protect);
1005 }
1006
1007 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1008                                  struct acpi_resource *resource,
1009                                  struct resource *p)
1010 {
1011         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1012
1013         if (pnp_resource_enabled(p)) {
1014                 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1015                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1016                 memory32->minimum = p->start;
1017                 memory32->maximum = p->end;
1018                 memory32->alignment = 0;
1019                 memory32->address_length = p->end - p->start + 1;
1020         } else {
1021                 memory32->minimum = 0;
1022                 memory32->alignment = 0;
1023         }
1024
1025         dev_dbg(&dev->dev, "  encode mem32 %#x-%#x write_protect %#x\n",
1026                 memory32->minimum,
1027                 memory32->minimum + memory32->address_length - 1,
1028                 memory32->write_protect);
1029 }
1030
1031 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1032                                        struct acpi_resource *resource,
1033                                        struct resource *p)
1034 {
1035         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1036
1037         if (pnp_resource_enabled(p)) {
1038                 fixed_memory32->write_protect =
1039                     p->flags & IORESOURCE_MEM_WRITEABLE ?
1040                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1041                 fixed_memory32->address = p->start;
1042                 fixed_memory32->address_length = p->end - p->start + 1;
1043         } else {
1044                 fixed_memory32->address = 0;
1045                 fixed_memory32->address_length = 0;
1046         }
1047
1048         dev_dbg(&dev->dev, "  encode fixed_mem32 %#x-%#x write_protect %#x\n",
1049                 fixed_memory32->address,
1050                 fixed_memory32->address + fixed_memory32->address_length - 1,
1051                 fixed_memory32->write_protect);
1052 }
1053
1054 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1055 {
1056         int i = 0;
1057         /* pnpacpi_build_resource_template allocates extra mem */
1058         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1059         struct acpi_resource *resource = buffer->pointer;
1060         int port = 0, irq = 0, dma = 0, mem = 0;
1061
1062         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1063         while (i < res_cnt) {
1064                 switch (resource->type) {
1065                 case ACPI_RESOURCE_TYPE_IRQ:
1066                         pnpacpi_encode_irq(dev, resource,
1067                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1068                         irq++;
1069                         break;
1070
1071                 case ACPI_RESOURCE_TYPE_DMA:
1072                         pnpacpi_encode_dma(dev, resource,
1073                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1074                         dma++;
1075                         break;
1076                 case ACPI_RESOURCE_TYPE_IO:
1077                         pnpacpi_encode_io(dev, resource,
1078                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1079                         port++;
1080                         break;
1081                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1082                         pnpacpi_encode_fixed_io(dev, resource,
1083                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1084                         port++;
1085                         break;
1086                 case ACPI_RESOURCE_TYPE_MEMORY24:
1087                         pnpacpi_encode_mem24(dev, resource,
1088                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1089                         mem++;
1090                         break;
1091                 case ACPI_RESOURCE_TYPE_MEMORY32:
1092                         pnpacpi_encode_mem32(dev, resource,
1093                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1094                         mem++;
1095                         break;
1096                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1097                         pnpacpi_encode_fixed_mem32(dev, resource,
1098                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1099                         mem++;
1100                         break;
1101                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1102                         pnpacpi_encode_ext_irq(dev, resource,
1103                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1104                         irq++;
1105                         break;
1106                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1107                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1108                 case ACPI_RESOURCE_TYPE_VENDOR:
1109                 case ACPI_RESOURCE_TYPE_END_TAG:
1110                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1111                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1112                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1113                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1114                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1115                 default:        /* other type */
1116                         dev_warn(&dev->dev, "can't encode unknown resource "
1117                                  "type %d\n", resource->type);
1118                         return -EINVAL;
1119                 }
1120                 resource++;
1121                 i++;
1122         }
1123         return 0;
1124 }