err.no Git - linux-2.6/blob - drivers/pnp/pnpacpi/rsparser.c

   1 /*
   2  * pnpacpi -- PnP ACPI driver
   3  *
   4  * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
   5  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/kernel.h>
  22 #include <linux/acpi.h>
  23 #include <linux/pci.h>
  24 #include <linux/pnp.h>
  25 #include "../base.h"
  26 #include "pnpacpi.h"
  27
  28 #ifdef CONFIG_IA64
  29 #define valid_IRQ(i) (1)
  30 #else
  31 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  32 #endif
  33
  34 /*
  35  * Allocated Resources
  36  */
  37 static int irq_flags(int triggering, int polarity, int shareable)
  38 {
  39         int flags;
  40
  41         if (triggering == ACPI_LEVEL_SENSITIVE) {
  42                 if (polarity == ACPI_ACTIVE_LOW)
  43                         flags = IORESOURCE_IRQ_LOWLEVEL;
  44                 else
  45                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  46         } else {
  47                 if (polarity == ACPI_ACTIVE_LOW)
  48                         flags = IORESOURCE_IRQ_LOWEDGE;
  49                 else
  50                         flags = IORESOURCE_IRQ_HIGHEDGE;
  51         }
  52
  53         if (shareable)
  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)
  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
  89 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  90                                                 u32 gsi, int triggering,
  91                                                 int polarity, int shareable)
  92 {
  93         int irq, flags;
  94         int p, t;
  95
  96         if (!valid_IRQ(gsi))
  97                 return;
  98
  99         /*
 100          * in IO-APIC mode, use overrided attribute. Two reasons:
 101          * 1. BIOS bug in DSDT
 102          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 103          */
 104         if (!acpi_get_override_irq(gsi, &t, &p)) {
 105                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 106                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 107
 108                 if (triggering != t || polarity != p) {
 109                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 110                                 gsi, t ? "edge":"level", p ? "low":"high");
 111                         triggering = t;
 112                         polarity = p;
 113                 }
 114         }
 115
 116         flags = irq_flags(triggering, polarity, shareable);
 117         irq = acpi_register_gsi(gsi, triggering, polarity);
 118         if (irq >= 0)
 119                 pcibios_penalize_isa_irq(irq, 1);
 120         else
 121                 flags |= IORESOURCE_DISABLED;
 122
 123         pnp_add_irq_resource(dev, irq, flags);
 124 }
 125
 126 static int dma_flags(int type, int bus_master, int transfer)
 127 {
 128         int flags = 0;
 129
 130         if (bus_master)
 131                 flags |= IORESOURCE_DMA_MASTER;
 132         switch (type) {
 133         case ACPI_COMPATIBILITY:
 134                 flags |= IORESOURCE_DMA_COMPATIBLE;
 135                 break;
 136         case ACPI_TYPE_A:
 137                 flags |= IORESOURCE_DMA_TYPEA;
 138                 break;
 139         case ACPI_TYPE_B:
 140                 flags |= IORESOURCE_DMA_TYPEB;
 141                 break;
 142         case ACPI_TYPE_F:
 143                 flags |= IORESOURCE_DMA_TYPEF;
 144                 break;
 145         default:
 146                 /* Set a default value ? */
 147                 flags |= IORESOURCE_DMA_COMPATIBLE;
 148                 pnp_err("Invalid DMA type");
 149         }
 150         switch (transfer) {
 151         case ACPI_TRANSFER_8:
 152                 flags |= IORESOURCE_DMA_8BIT;
 153                 break;
 154         case ACPI_TRANSFER_8_16:
 155                 flags |= IORESOURCE_DMA_8AND16BIT;
 156                 break;
 157         case ACPI_TRANSFER_16:
 158                 flags |= IORESOURCE_DMA_16BIT;
 159                 break;
 160         default:
 161                 /* Set a default value ? */
 162                 flags |= IORESOURCE_DMA_8AND16BIT;
 163                 pnp_err("Invalid DMA transfer type");
 164         }
 165
 166         return flags;
 167 }
 168
 169 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 170                                                u64 len, int io_decode)
 171 {
 172         int flags = 0;
 173         u64 end = start + len - 1;
 174
 175         if (io_decode == ACPI_DECODE_16)
 176                 flags |= PNP_PORT_FLAG_16BITADDR;
 177         if (len == 0 || end >= 0x10003)
 178                 flags |= IORESOURCE_DISABLED;
 179
 180         pnp_add_io_resource(dev, start, end, flags);
 181 }
 182
 183 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 184                                                 u64 start, u64 len,
 185                                                 int write_protect)
 186 {
 187         int flags = 0;
 188         u64 end = start + len - 1;
 189
 190         if (len == 0)
 191                 flags |= IORESOURCE_DISABLED;
 192         if (write_protect == ACPI_READ_WRITE_MEMORY)
 193                 flags |= IORESOURCE_MEM_WRITEABLE;
 194
 195         pnp_add_mem_resource(dev, start, end, flags);
 196 }
 197
 198 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 199                                                   struct acpi_resource *res)
 200 {
 201         struct acpi_resource_address64 addr, *p = &addr;
 202         acpi_status status;
 203
 204         status = acpi_resource_to_address64(res, p);
 205         if (!ACPI_SUCCESS(status)) {
 206                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 207                          res->type);
 208                 return;
 209         }
 210
 211         if (p->producer_consumer == ACPI_PRODUCER)
 212                 return;
 213
 214         if (p->resource_type == ACPI_MEMORY_RANGE)
 215                 pnpacpi_parse_allocated_memresource(dev,
 216                         p->minimum, p->address_length,
 217                         p->info.mem.write_protect);
 218         else if (p->resource_type == ACPI_IO_RANGE)
 219                 pnpacpi_parse_allocated_ioresource(dev,
 220                         p->minimum, p->address_length,
 221                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 222                                 ACPI_DECODE_16);
 223 }
 224
 225 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 226                                               void *data)
 227 {
 228         struct pnp_dev *dev = data;
 229         struct acpi_resource_irq *irq;
 230         struct acpi_resource_dma *dma;
 231         struct acpi_resource_io *io;
 232         struct acpi_resource_fixed_io *fixed_io;
 233         struct acpi_resource_memory24 *memory24;
 234         struct acpi_resource_memory32 *memory32;
 235         struct acpi_resource_fixed_memory32 *fixed_memory32;
 236         struct acpi_resource_extended_irq *extended_irq;
 237         int i, flags;
 238
 239         switch (res->type) {
 240         case ACPI_RESOURCE_TYPE_IRQ:
 241                 /*
 242                  * Per spec, only one interrupt per descriptor is allowed in
 243                  * _CRS, but some firmware violates this, so parse them all.
 244                  */
 245                 irq = &res->data.irq;
 246                 for (i = 0; i < irq->interrupt_count; i++) {
 247                         pnpacpi_parse_allocated_irqresource(dev,
 248                                 irq->interrupts[i],
 249                                 irq->triggering,
 250                                 irq->polarity,
 251                                 irq->sharable);
 252                 }
 253                 break;
 254
 255         case ACPI_RESOURCE_TYPE_DMA:
 256                 dma = &res->data.dma;
 257                 if (dma->channel_count > 0) {
 258                         flags = dma_flags(dma->type, dma->bus_master,
 259                                           dma->transfer);
 260                         if (dma->channels[0] == (u8) -1)
 261                                 flags |= IORESOURCE_DISABLED;
 262                         pnp_add_dma_resource(dev, dma->channels[0], flags);
 263                 }
 264                 break;
 265
 266         case ACPI_RESOURCE_TYPE_IO:
 267                 io = &res->data.io;
 268                 pnpacpi_parse_allocated_ioresource(dev,
 269                         io->minimum,
 270                         io->address_length,
 271                         io->io_decode);
 272                 break;
 273
 274         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 275         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 276                 break;
 277
 278         case ACPI_RESOURCE_TYPE_FIXED_IO:
 279                 fixed_io = &res->data.fixed_io;
 280                 pnpacpi_parse_allocated_ioresource(dev,
 281                         fixed_io->address,
 282                         fixed_io->address_length,
 283                         ACPI_DECODE_10);
 284                 break;
 285
 286         case ACPI_RESOURCE_TYPE_VENDOR:
 287                 break;
 288
 289         case ACPI_RESOURCE_TYPE_END_TAG:
 290                 break;
 291
 292         case ACPI_RESOURCE_TYPE_MEMORY24:
 293                 memory24 = &res->data.memory24;
 294                 pnpacpi_parse_allocated_memresource(dev,
 295                         memory24->minimum,
 296                         memory24->address_length,
 297                         memory24->write_protect);
 298                 break;
 299         case ACPI_RESOURCE_TYPE_MEMORY32:
 300                 memory32 = &res->data.memory32;
 301                 pnpacpi_parse_allocated_memresource(dev,
 302                         memory32->minimum,
 303                         memory32->address_length,
 304                         memory32->write_protect);
 305                 break;
 306         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 307                 fixed_memory32 = &res->data.fixed_memory32;
 308                 pnpacpi_parse_allocated_memresource(dev,
 309                         fixed_memory32->address,
 310                         fixed_memory32->address_length,
 311                         fixed_memory32->write_protect);
 312                 break;
 313         case ACPI_RESOURCE_TYPE_ADDRESS16:
 314         case ACPI_RESOURCE_TYPE_ADDRESS32:
 315         case ACPI_RESOURCE_TYPE_ADDRESS64:
 316                 pnpacpi_parse_allocated_address_space(dev, res);
 317                 break;
 318
 319         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 320                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 321                         return AE_OK;
 322                 break;
 323
 324         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 325                 extended_irq = &res->data.extended_irq;
 326                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 327                         return AE_OK;
 328
 329                 for (i = 0; i < extended_irq->interrupt_count; i++) {
 330                         pnpacpi_parse_allocated_irqresource(dev,
 331                                 extended_irq->interrupts[i],
 332                                 extended_irq->triggering,
 333                                 extended_irq->polarity,
 334                                 extended_irq->sharable);
 335                 }
 336                 break;
 337
 338         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 339                 break;
 340
 341         default:
 342                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 343                          res->type);
 344                 return AE_ERROR;
 345         }
 346
 347         return AE_OK;
 348 }
 349
 350 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 351 {
 352         acpi_handle handle = dev->data;
 353         acpi_status status;
 354
 355         dev_dbg(&dev->dev, "parse allocated resources\n");
 356
 357         pnp_init_resources(dev);
 358
 359         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 360                                      pnpacpi_allocated_resource, dev);
 361
 362         if (ACPI_FAILURE(status)) {
 363                 if (status != AE_NOT_FOUND)
 364                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 365                 return -EPERM;
 366         }
 367         return 0;
 368 }
 369
 370 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 371                                             struct pnp_option *option,
 372                                             struct acpi_resource_dma *p)
 373 {
 374         int i;
 375         struct pnp_dma *dma;
 376
 377         if (p->channel_count == 0)
 378                 return;
 379         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 380         if (!dma)
 381                 return;
 382
 383         for (i = 0; i < p->channel_count; i++)
 384                 dma->map |= 1 << p->channels[i];
 385
 386         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 387
 388         pnp_register_dma_resource(dev, option, dma);
 389 }
 390
 391 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 392                                             struct pnp_option *option,
 393                                             struct acpi_resource_irq *p)
 394 {
 395         int i;
 396         struct pnp_irq *irq;
 397
 398         if (p->interrupt_count == 0)
 399                 return;
 400         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 401         if (!irq)
 402                 return;
 403
 404         for (i = 0; i < p->interrupt_count; i++)
 405                 if (p->interrupts[i])
 406                         __set_bit(p->interrupts[i], irq->map);
 407         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 408
 409         pnp_register_irq_resource(dev, option, irq);
 410 }
 411
 412 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 413                                                 struct pnp_option *option,
 414                                         struct acpi_resource_extended_irq *p)
 415 {
 416         int i;
 417         struct pnp_irq *irq;
 418
 419         if (p->interrupt_count == 0)
 420                 return;
 421         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 422         if (!irq)
 423                 return;
 424
 425         for (i = 0; i < p->interrupt_count; i++)
 426                 if (p->interrupts[i])
 427                         __set_bit(p->interrupts[i], irq->map);
 428         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 429
 430         pnp_register_irq_resource(dev, option, irq);
 431 }
 432
 433 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 434                                              struct pnp_option *option,
 435                                              struct acpi_resource_io *io)
 436 {
 437         struct pnp_port *port;
 438
 439         if (io->address_length == 0)
 440                 return;
 441         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 442         if (!port)
 443                 return;
 444         port->min = io->minimum;
 445         port->max = io->maximum;
 446         port->align = io->alignment;
 447         port->size = io->address_length;
 448         port->flags = ACPI_DECODE_16 == io->io_decode ?
 449             PNP_PORT_FLAG_16BITADDR : 0;
 450         pnp_register_port_resource(dev, option, port);
 451 }
 452
 453 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 454                                                    struct pnp_option *option,
 455                                         struct acpi_resource_fixed_io *io)
 456 {
 457         struct pnp_port *port;
 458
 459         if (io->address_length == 0)
 460                 return;
 461         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 462         if (!port)
 463                 return;
 464         port->min = port->max = io->address;
 465         port->size = io->address_length;
 466         port->align = 0;
 467         port->flags = PNP_PORT_FLAG_FIXED;
 468         pnp_register_port_resource(dev, option, port);
 469 }
 470
 471 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 472                                               struct pnp_option *option,
 473                                               struct acpi_resource_memory24 *p)
 474 {
 475         struct pnp_mem *mem;
 476
 477         if (p->address_length == 0)
 478                 return;
 479         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 480         if (!mem)
 481                 return;
 482         mem->min = p->minimum;
 483         mem->max = p->maximum;
 484         mem->align = p->alignment;
 485         mem->size = p->address_length;
 486
 487         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 488             IORESOURCE_MEM_WRITEABLE : 0;
 489
 490         pnp_register_mem_resource(dev, option, mem);
 491 }
 492
 493 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 494                                               struct pnp_option *option,
 495                                               struct acpi_resource_memory32 *p)
 496 {
 497         struct pnp_mem *mem;
 498
 499         if (p->address_length == 0)
 500                 return;
 501         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 502         if (!mem)
 503                 return;
 504         mem->min = p->minimum;
 505         mem->max = p->maximum;
 506         mem->align = p->alignment;
 507         mem->size = p->address_length;
 508
 509         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 510             IORESOURCE_MEM_WRITEABLE : 0;
 511
 512         pnp_register_mem_resource(dev, option, mem);
 513 }
 514
 515 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 516                                                     struct pnp_option *option,
 517                                         struct acpi_resource_fixed_memory32 *p)
 518 {
 519         struct pnp_mem *mem;
 520
 521         if (p->address_length == 0)
 522                 return;
 523         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 524         if (!mem)
 525                 return;
 526         mem->min = mem->max = p->address;
 527         mem->size = p->address_length;
 528         mem->align = 0;
 529
 530         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 531             IORESOURCE_MEM_WRITEABLE : 0;
 532
 533         pnp_register_mem_resource(dev, option, mem);
 534 }
 535
 536 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 537                                                 struct pnp_option *option,
 538                                                 struct acpi_resource *r)
 539 {
 540         struct acpi_resource_address64 addr, *p = &addr;
 541         acpi_status status;
 542         struct pnp_mem *mem;
 543         struct pnp_port *port;
 544
 545         status = acpi_resource_to_address64(r, p);
 546         if (!ACPI_SUCCESS(status)) {
 547                 pnp_warn("PnPACPI: failed to convert resource type %d",
 548                          r->type);
 549                 return;
 550         }
 551
 552         if (p->address_length == 0)
 553                 return;
 554
 555         if (p->resource_type == ACPI_MEMORY_RANGE) {
 556                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 557                 if (!mem)
 558                         return;
 559                 mem->min = mem->max = p->minimum;
 560                 mem->size = p->address_length;
 561                 mem->align = 0;
 562                 mem->flags = (p->info.mem.write_protect ==
 563                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 564                     : 0;
 565                 pnp_register_mem_resource(dev, option, mem);
 566         } else if (p->resource_type == ACPI_IO_RANGE) {
 567                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 568                 if (!port)
 569                         return;
 570                 port->min = port->max = p->minimum;
 571                 port->size = p->address_length;
 572                 port->align = 0;
 573                 port->flags = PNP_PORT_FLAG_FIXED;
 574                 pnp_register_port_resource(dev, option, port);
 575         }
 576 }
 577
 578 struct acpipnp_parse_option_s {
 579         struct pnp_option *option;
 580         struct pnp_option *option_independent;
 581         struct pnp_dev *dev;
 582 };
 583
 584 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 585                                                   void *data)
 586 {
 587         int priority = 0;
 588         struct acpipnp_parse_option_s *parse_data = data;
 589         struct pnp_dev *dev = parse_data->dev;
 590         struct pnp_option *option = parse_data->option;
 591
 592         switch (res->type) {
 593         case ACPI_RESOURCE_TYPE_IRQ:
 594                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 595                 break;
 596
 597         case ACPI_RESOURCE_TYPE_DMA:
 598                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 599                 break;
 600
 601         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 602                 switch (res->data.start_dpf.compatibility_priority) {
 603                 case ACPI_GOOD_CONFIGURATION:
 604                         priority = PNP_RES_PRIORITY_PREFERRED;
 605                         break;
 606
 607                 case ACPI_ACCEPTABLE_CONFIGURATION:
 608                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 609                         break;
 610
 611                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 612                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 613                         break;
 614                 default:
 615                         priority = PNP_RES_PRIORITY_INVALID;
 616                         break;
 617                 }
 618                 /* TBD: Consider performance/robustness bits */
 619                 option = pnp_register_dependent_option(dev, priority);
 620                 if (!option)
 621                         return AE_ERROR;
 622                 parse_data->option = option;
 623                 break;
 624
 625         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 626                 /*only one EndDependentFn is allowed */
 627                 if (!parse_data->option_independent) {
 628                         dev_warn(&dev->dev, "more than one EndDependentFn "
 629                                  "in _PRS\n");
 630                         return AE_ERROR;
 631                 }
 632                 parse_data->option = parse_data->option_independent;
 633                 parse_data->option_independent = NULL;
 634                 dev_dbg(&dev->dev, "end dependent options\n");
 635                 break;
 636
 637         case ACPI_RESOURCE_TYPE_IO:
 638                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 639                 break;
 640
 641         case ACPI_RESOURCE_TYPE_FIXED_IO:
 642                 pnpacpi_parse_fixed_port_option(dev, option,
 643                                                 &res->data.fixed_io);
 644                 break;
 645
 646         case ACPI_RESOURCE_TYPE_VENDOR:
 647         case ACPI_RESOURCE_TYPE_END_TAG:
 648                 break;
 649
 650         case ACPI_RESOURCE_TYPE_MEMORY24:
 651                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 652                 break;
 653
 654         case ACPI_RESOURCE_TYPE_MEMORY32:
 655                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 656                 break;
 657
 658         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 659                 pnpacpi_parse_fixed_mem32_option(dev, option,
 660                                                  &res->data.fixed_memory32);
 661                 break;
 662
 663         case ACPI_RESOURCE_TYPE_ADDRESS16:
 664         case ACPI_RESOURCE_TYPE_ADDRESS32:
 665         case ACPI_RESOURCE_TYPE_ADDRESS64:
 666                 pnpacpi_parse_address_option(dev, option, res);
 667                 break;
 668
 669         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 670                 break;
 671
 672         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 673                 pnpacpi_parse_ext_irq_option(dev, option,
 674                                              &res->data.extended_irq);
 675                 break;
 676
 677         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 678                 break;
 679
 680         default:
 681                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 682                          res->type);
 683                 return AE_ERROR;
 684         }
 685
 686         return AE_OK;
 687 }
 688
 689 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 690 {
 691         acpi_handle handle = dev->data;
 692         acpi_status status;
 693         struct acpipnp_parse_option_s parse_data;
 694
 695         dev_dbg(&dev->dev, "parse resource options\n");
 696
 697         parse_data.option = pnp_register_independent_option(dev);
 698         if (!parse_data.option)
 699                 return -ENOMEM;
 700
 701         parse_data.option_independent = parse_data.option;
 702         parse_data.dev = dev;
 703         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 704                                      pnpacpi_option_resource, &parse_data);
 705
 706         if (ACPI_FAILURE(status)) {
 707                 if (status != AE_NOT_FOUND)
 708                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 709                 return -EPERM;
 710         }
 711         return 0;
 712 }
 713
 714 static int pnpacpi_supported_resource(struct acpi_resource *res)
 715 {
 716         switch (res->type) {
 717         case ACPI_RESOURCE_TYPE_IRQ:
 718         case ACPI_RESOURCE_TYPE_DMA:
 719         case ACPI_RESOURCE_TYPE_IO:
 720         case ACPI_RESOURCE_TYPE_FIXED_IO:
 721         case ACPI_RESOURCE_TYPE_MEMORY24:
 722         case ACPI_RESOURCE_TYPE_MEMORY32:
 723         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 724         case ACPI_RESOURCE_TYPE_ADDRESS16:
 725         case ACPI_RESOURCE_TYPE_ADDRESS32:
 726         case ACPI_RESOURCE_TYPE_ADDRESS64:
 727         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 728                 return 1;
 729         }
 730         return 0;
 731 }
 732
 733 /*
 734  * Set resource
 735  */
 736 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 737                                            void *data)
 738 {
 739         int *res_cnt = data;
 740
 741         if (pnpacpi_supported_resource(res))
 742                 (*res_cnt)++;
 743         return AE_OK;
 744 }
 745
 746 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 747 {
 748         struct acpi_resource **resource = data;
 749
 750         if (pnpacpi_supported_resource(res)) {
 751                 (*resource)->type = res->type;
 752                 (*resource)->length = sizeof(struct acpi_resource);
 753                 (*resource)++;
 754         }
 755
 756         return AE_OK;
 757 }
 758
 759 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 760                                     struct acpi_buffer *buffer)
 761 {
 762         acpi_handle handle = dev->data;
 763         struct acpi_resource *resource;
 764         int res_cnt = 0;
 765         acpi_status status;
 766
 767         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 768                                      pnpacpi_count_resources, &res_cnt);
 769         if (ACPI_FAILURE(status)) {
 770                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 771                 return -EINVAL;
 772         }
 773         if (!res_cnt)
 774                 return -EINVAL;
 775         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 776         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 777         if (!buffer->pointer)
 778                 return -ENOMEM;
 779
 780         resource = (struct acpi_resource *)buffer->pointer;
 781         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 782                                      pnpacpi_type_resources, &resource);
 783         if (ACPI_FAILURE(status)) {
 784                 kfree(buffer->pointer);
 785                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 786                 return -EINVAL;
 787         }
 788         /* resource will pointer the end resource now */
 789         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 790
 791         return 0;
 792 }
 793
 794 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 795                                struct acpi_resource *resource,
 796                                struct resource *p)
 797 {
 798         struct acpi_resource_irq *irq = &resource->data.irq;
 799         int triggering, polarity;
 800
 801         decode_irq_flags(dev, p->flags, &triggering, &polarity);
 802         irq->triggering = triggering;
 803         irq->polarity = polarity;
 804         if (triggering == ACPI_EDGE_SENSITIVE)
 805                 irq->sharable = ACPI_EXCLUSIVE;
 806         else
 807                 irq->sharable = ACPI_SHARED;
 808         irq->interrupt_count = 1;
 809         irq->interrupts[0] = p->start;
 810
 811         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 812                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 813                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 814                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 815 }
 816
 817 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 818                                    struct acpi_resource *resource,
 819                                    struct resource *p)
 820 {
 821         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 822         int triggering, polarity;
 823
 824         decode_irq_flags(dev, p->flags, &triggering, &polarity);
 825         extended_irq->producer_consumer = ACPI_CONSUMER;
 826         extended_irq->triggering = triggering;
 827         extended_irq->polarity = polarity;
 828         if (triggering == ACPI_EDGE_SENSITIVE)
 829                 extended_irq->sharable = ACPI_EXCLUSIVE;
 830         else
 831                 extended_irq->sharable = ACPI_SHARED;
 832         extended_irq->interrupt_count = 1;
 833         extended_irq->interrupts[0] = p->start;
 834
 835         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 836                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 837                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 838                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 839 }
 840
 841 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 842                                struct acpi_resource *resource,
 843                                struct resource *p)
 844 {
 845         struct acpi_resource_dma *dma = &resource->data.dma;
 846
 847         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 848         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 849         case IORESOURCE_DMA_TYPEA:
 850                 dma->type = ACPI_TYPE_A;
 851                 break;
 852         case IORESOURCE_DMA_TYPEB:
 853                 dma->type = ACPI_TYPE_B;
 854                 break;
 855         case IORESOURCE_DMA_TYPEF:
 856                 dma->type = ACPI_TYPE_F;
 857                 break;
 858         default:
 859                 dma->type = ACPI_COMPATIBILITY;
 860         }
 861
 862         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 863         case IORESOURCE_DMA_8BIT:
 864                 dma->transfer = ACPI_TRANSFER_8;
 865                 break;
 866         case IORESOURCE_DMA_8AND16BIT:
 867                 dma->transfer = ACPI_TRANSFER_8_16;
 868                 break;
 869         default:
 870                 dma->transfer = ACPI_TRANSFER_16;
 871         }
 872
 873         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 874         dma->channel_count = 1;
 875         dma->channels[0] = p->start;
 876
 877         dev_dbg(&dev->dev, "  encode dma %d "
 878                 "type %#x transfer %#x master %d\n",
 879                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 880 }
 881
 882 static void pnpacpi_encode_io(struct pnp_dev *dev,
 883                               struct acpi_resource *resource,
 884                               struct resource *p)
 885 {
 886         struct acpi_resource_io *io = &resource->data.io;
 887
 888         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 889         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 890             ACPI_DECODE_16 : ACPI_DECODE_10;
 891         io->minimum = p->start;
 892         io->maximum = p->end;
 893         io->alignment = 0;      /* Correct? */
 894         io->address_length = p->end - p->start + 1;
 895
 896         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 897                 (unsigned long long) p->start, (unsigned long long) p->end,
 898                 io->io_decode);
 899 }
 900
 901 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 902                                     struct acpi_resource *resource,
 903                                     struct resource *p)
 904 {
 905         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 906
 907         fixed_io->address = p->start;
 908         fixed_io->address_length = p->end - p->start + 1;
 909
 910         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 911                 (unsigned long long) p->start, (unsigned long long) p->end);
 912 }
 913
 914 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 915                                  struct acpi_resource *resource,
 916                                  struct resource *p)
 917 {
 918         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 919
 920         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 921         memory24->write_protect =
 922             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 923             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 924         memory24->minimum = p->start;
 925         memory24->maximum = p->end;
 926         memory24->alignment = 0;
 927         memory24->address_length = p->end - p->start + 1;
 928
 929         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 930                 (unsigned long long) p->start, (unsigned long long) p->end,
 931                 memory24->write_protect);
 932 }
 933
 934 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 935                                  struct acpi_resource *resource,
 936                                  struct resource *p)
 937 {
 938         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 939
 940         memory32->write_protect =
 941             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 942             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 943         memory32->minimum = p->start;
 944         memory32->maximum = p->end;
 945         memory32->alignment = 0;
 946         memory32->address_length = p->end - p->start + 1;
 947
 948         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 949                 (unsigned long long) p->start, (unsigned long long) p->end,
 950                 memory32->write_protect);
 951 }
 952
 953 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 954                                        struct acpi_resource *resource,
 955                                        struct resource *p)
 956 {
 957         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 958
 959         fixed_memory32->write_protect =
 960             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 961             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 962         fixed_memory32->address = p->start;
 963         fixed_memory32->address_length = p->end - p->start + 1;
 964
 965         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
 966                 "write_protect %#x\n",
 967                 (unsigned long long) p->start, (unsigned long long) p->end,
 968                 fixed_memory32->write_protect);
 969 }
 970
 971 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
 972 {
 973         int i = 0;
 974         /* pnpacpi_build_resource_template allocates extra mem */
 975         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 976         struct acpi_resource *resource = buffer->pointer;
 977         int port = 0, irq = 0, dma = 0, mem = 0;
 978
 979         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
 980         while (i < res_cnt) {
 981                 switch (resource->type) {
 982                 case ACPI_RESOURCE_TYPE_IRQ:
 983                         pnpacpi_encode_irq(dev, resource,
 984                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 985                         irq++;
 986                         break;
 987
 988                 case ACPI_RESOURCE_TYPE_DMA:
 989                         pnpacpi_encode_dma(dev, resource,
 990                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
 991                         dma++;
 992                         break;
 993                 case ACPI_RESOURCE_TYPE_IO:
 994                         pnpacpi_encode_io(dev, resource,
 995                                 pnp_get_resource(dev, IORESOURCE_IO, port));
 996                         port++;
 997                         break;
 998                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 999                         pnpacpi_encode_fixed_io(dev, resource,
1000                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1001                         port++;
1002                         break;
1003                 case ACPI_RESOURCE_TYPE_MEMORY24:
1004                         pnpacpi_encode_mem24(dev, resource,
1005                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1006                         mem++;
1007                         break;
1008                 case ACPI_RESOURCE_TYPE_MEMORY32:
1009                         pnpacpi_encode_mem32(dev, resource,
1010                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1011                         mem++;
1012                         break;
1013                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1014                         pnpacpi_encode_fixed_mem32(dev, resource,
1015                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1016                         mem++;
1017                         break;
1018                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1019                         pnpacpi_encode_ext_irq(dev, resource,
1020                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1021                         irq++;
1022                         break;
1023                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1024                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1025                 case ACPI_RESOURCE_TYPE_VENDOR:
1026                 case ACPI_RESOURCE_TYPE_END_TAG:
1027                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1028                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1029                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1030                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1031                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1032                 default:        /* other type */
1033                         dev_warn(&dev->dev, "can't encode unknown resource "
1034                                  "type %d\n", resource->type);
1035                         return -EINVAL;
1036                 }
1037                 resource++;
1038                 i++;
1039         }
1040         return 0;
1041 }