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(int flag, int *triggering, int *polarity)
  60 {
  61         switch (flag) {
  62         case IORESOURCE_IRQ_LOWLEVEL:
  63                 *triggering = ACPI_LEVEL_SENSITIVE;
  64                 *polarity = ACPI_ACTIVE_LOW;
  65                 break;
  66         case IORESOURCE_IRQ_HIGHLEVEL:
  67                 *triggering = ACPI_LEVEL_SENSITIVE;
  68                 *polarity = ACPI_ACTIVE_HIGH;
  69                 break;
  70         case IORESOURCE_IRQ_LOWEDGE:
  71                 *triggering = ACPI_EDGE_SENSITIVE;
  72                 *polarity = ACPI_ACTIVE_LOW;
  73                 break;
  74         case IORESOURCE_IRQ_HIGHEDGE:
  75                 *triggering = ACPI_EDGE_SENSITIVE;
  76                 *polarity = ACPI_ACTIVE_HIGH;
  77                 break;
  78         }
  79 }
  80
  81 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  82                                                 u32 gsi, int triggering,
  83                                                 int polarity, int shareable)
  84 {
  85         int irq, flags;
  86         int p, t;
  87
  88         if (!valid_IRQ(gsi))
  89                 return;
  90
  91         /*
  92          * in IO-APIC mode, use overrided attribute. Two reasons:
  93          * 1. BIOS bug in DSDT
  94          * 2. BIOS uses IO-APIC mode Interrupt Source Override
  95          */
  96         if (!acpi_get_override_irq(gsi, &t, &p)) {
  97                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
  98                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
  99
 100                 if (triggering != t || polarity != p) {
 101                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 102                                 gsi, t ? "edge":"level", p ? "low":"high");
 103                         triggering = t;
 104                         polarity = p;
 105                 }
 106         }
 107
 108         flags = irq_flags(triggering, polarity, shareable);
 109         irq = acpi_register_gsi(gsi, triggering, polarity);
 110         if (irq >= 0)
 111                 pcibios_penalize_isa_irq(irq, 1);
 112         else
 113                 flags |= IORESOURCE_DISABLED;
 114
 115         pnp_add_irq_resource(dev, irq, flags);
 116 }
 117
 118 static int dma_flags(int type, int bus_master, int transfer)
 119 {
 120         int flags = 0;
 121
 122         if (bus_master)
 123                 flags |= IORESOURCE_DMA_MASTER;
 124         switch (type) {
 125         case ACPI_COMPATIBILITY:
 126                 flags |= IORESOURCE_DMA_COMPATIBLE;
 127                 break;
 128         case ACPI_TYPE_A:
 129                 flags |= IORESOURCE_DMA_TYPEA;
 130                 break;
 131         case ACPI_TYPE_B:
 132                 flags |= IORESOURCE_DMA_TYPEB;
 133                 break;
 134         case ACPI_TYPE_F:
 135                 flags |= IORESOURCE_DMA_TYPEF;
 136                 break;
 137         default:
 138                 /* Set a default value ? */
 139                 flags |= IORESOURCE_DMA_COMPATIBLE;
 140                 pnp_err("Invalid DMA type");
 141         }
 142         switch (transfer) {
 143         case ACPI_TRANSFER_8:
 144                 flags |= IORESOURCE_DMA_8BIT;
 145                 break;
 146         case ACPI_TRANSFER_8_16:
 147                 flags |= IORESOURCE_DMA_8AND16BIT;
 148                 break;
 149         case ACPI_TRANSFER_16:
 150                 flags |= IORESOURCE_DMA_16BIT;
 151                 break;
 152         default:
 153                 /* Set a default value ? */
 154                 flags |= IORESOURCE_DMA_8AND16BIT;
 155                 pnp_err("Invalid DMA transfer type");
 156         }
 157
 158         return flags;
 159 }
 160
 161 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 162                                                u64 len, int io_decode)
 163 {
 164         int flags = 0;
 165         u64 end = start + len - 1;
 166
 167         if (io_decode == ACPI_DECODE_16)
 168                 flags |= PNP_PORT_FLAG_16BITADDR;
 169         if (len == 0 || end >= 0x10003)
 170                 flags |= IORESOURCE_DISABLED;
 171
 172         pnp_add_io_resource(dev, start, end, flags);
 173 }
 174
 175 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 176                                                 u64 start, u64 len,
 177                                                 int write_protect)
 178 {
 179         int flags = 0;
 180         u64 end = start + len - 1;
 181
 182         if (len == 0)
 183                 flags |= IORESOURCE_DISABLED;
 184         if (write_protect == ACPI_READ_WRITE_MEMORY)
 185                 flags |= IORESOURCE_MEM_WRITEABLE;
 186
 187         pnp_add_mem_resource(dev, start, end, flags);
 188 }
 189
 190 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 191                                                   struct acpi_resource *res)
 192 {
 193         struct acpi_resource_address64 addr, *p = &addr;
 194         acpi_status status;
 195
 196         status = acpi_resource_to_address64(res, p);
 197         if (!ACPI_SUCCESS(status)) {
 198                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 199                          res->type);
 200                 return;
 201         }
 202
 203         if (p->producer_consumer == ACPI_PRODUCER)
 204                 return;
 205
 206         if (p->resource_type == ACPI_MEMORY_RANGE)
 207                 pnpacpi_parse_allocated_memresource(dev,
 208                         p->minimum, p->address_length,
 209                         p->info.mem.write_protect);
 210         else if (p->resource_type == ACPI_IO_RANGE)
 211                 pnpacpi_parse_allocated_ioresource(dev,
 212                         p->minimum, p->address_length,
 213                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 214                                 ACPI_DECODE_16);
 215 }
 216
 217 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 218                                               void *data)
 219 {
 220         struct pnp_dev *dev = data;
 221         struct acpi_resource_irq *irq;
 222         struct acpi_resource_dma *dma;
 223         struct acpi_resource_io *io;
 224         struct acpi_resource_fixed_io *fixed_io;
 225         struct acpi_resource_memory24 *memory24;
 226         struct acpi_resource_memory32 *memory32;
 227         struct acpi_resource_fixed_memory32 *fixed_memory32;
 228         struct acpi_resource_extended_irq *extended_irq;
 229         int i, flags;
 230
 231         switch (res->type) {
 232         case ACPI_RESOURCE_TYPE_IRQ:
 233                 /*
 234                  * Per spec, only one interrupt per descriptor is allowed in
 235                  * _CRS, but some firmware violates this, so parse them all.
 236                  */
 237                 irq = &res->data.irq;
 238                 for (i = 0; i < irq->interrupt_count; i++) {
 239                         pnpacpi_parse_allocated_irqresource(dev,
 240                                 irq->interrupts[i],
 241                                 irq->triggering,
 242                                 irq->polarity,
 243                                 irq->sharable);
 244                 }
 245                 break;
 246
 247         case ACPI_RESOURCE_TYPE_DMA:
 248                 dma = &res->data.dma;
 249                 if (dma->channel_count > 0) {
 250                         flags = dma_flags(dma->type, dma->bus_master,
 251                                           dma->transfer);
 252                         if (dma->channels[0] == (u8) -1)
 253                                 flags |= IORESOURCE_DISABLED;
 254                         pnp_add_dma_resource(dev, dma->channels[0], flags);
 255                 }
 256                 break;
 257
 258         case ACPI_RESOURCE_TYPE_IO:
 259                 io = &res->data.io;
 260                 pnpacpi_parse_allocated_ioresource(dev,
 261                         io->minimum,
 262                         io->address_length,
 263                         io->io_decode);
 264                 break;
 265
 266         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 267         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 268                 break;
 269
 270         case ACPI_RESOURCE_TYPE_FIXED_IO:
 271                 fixed_io = &res->data.fixed_io;
 272                 pnpacpi_parse_allocated_ioresource(dev,
 273                         fixed_io->address,
 274                         fixed_io->address_length,
 275                         ACPI_DECODE_10);
 276                 break;
 277
 278         case ACPI_RESOURCE_TYPE_VENDOR:
 279                 break;
 280
 281         case ACPI_RESOURCE_TYPE_END_TAG:
 282                 break;
 283
 284         case ACPI_RESOURCE_TYPE_MEMORY24:
 285                 memory24 = &res->data.memory24;
 286                 pnpacpi_parse_allocated_memresource(dev,
 287                         memory24->minimum,
 288                         memory24->address_length,
 289                         memory24->write_protect);
 290                 break;
 291         case ACPI_RESOURCE_TYPE_MEMORY32:
 292                 memory32 = &res->data.memory32;
 293                 pnpacpi_parse_allocated_memresource(dev,
 294                         memory32->minimum,
 295                         memory32->address_length,
 296                         memory32->write_protect);
 297                 break;
 298         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 299                 fixed_memory32 = &res->data.fixed_memory32;
 300                 pnpacpi_parse_allocated_memresource(dev,
 301                         fixed_memory32->address,
 302                         fixed_memory32->address_length,
 303                         fixed_memory32->write_protect);
 304                 break;
 305         case ACPI_RESOURCE_TYPE_ADDRESS16:
 306         case ACPI_RESOURCE_TYPE_ADDRESS32:
 307         case ACPI_RESOURCE_TYPE_ADDRESS64:
 308                 pnpacpi_parse_allocated_address_space(dev, res);
 309                 break;
 310
 311         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 312                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 313                         return AE_OK;
 314                 break;
 315
 316         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 317                 extended_irq = &res->data.extended_irq;
 318                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 319                         return AE_OK;
 320
 321                 for (i = 0; i < extended_irq->interrupt_count; i++) {
 322                         pnpacpi_parse_allocated_irqresource(dev,
 323                                 extended_irq->interrupts[i],
 324                                 extended_irq->triggering,
 325                                 extended_irq->polarity,
 326                                 extended_irq->sharable);
 327                 }
 328                 break;
 329
 330         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 331                 break;
 332
 333         default:
 334                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 335                          res->type);
 336                 return AE_ERROR;
 337         }
 338
 339         return AE_OK;
 340 }
 341
 342 acpi_status pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 343 {
 344         acpi_handle handle = dev->data;
 345
 346         dev_dbg(&dev->dev, "parse allocated resources\n");
 347
 348         pnp_init_resources(dev);
 349
 350         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 351                                    pnpacpi_allocated_resource, dev);
 352 }
 353
 354 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 355                                             struct pnp_option *option,
 356                                             struct acpi_resource_dma *p)
 357 {
 358         int i;
 359         struct pnp_dma *dma;
 360
 361         if (p->channel_count == 0)
 362                 return;
 363         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 364         if (!dma)
 365                 return;
 366
 367         for (i = 0; i < p->channel_count; i++)
 368                 dma->map |= 1 << p->channels[i];
 369
 370         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 371
 372         pnp_register_dma_resource(dev, option, dma);
 373 }
 374
 375 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 376                                             struct pnp_option *option,
 377                                             struct acpi_resource_irq *p)
 378 {
 379         int i;
 380         struct pnp_irq *irq;
 381
 382         if (p->interrupt_count == 0)
 383                 return;
 384         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 385         if (!irq)
 386                 return;
 387
 388         for (i = 0; i < p->interrupt_count; i++)
 389                 if (p->interrupts[i])
 390                         __set_bit(p->interrupts[i], irq->map);
 391         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 392
 393         pnp_register_irq_resource(dev, option, irq);
 394 }
 395
 396 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 397                                                 struct pnp_option *option,
 398                                         struct acpi_resource_extended_irq *p)
 399 {
 400         int i;
 401         struct pnp_irq *irq;
 402
 403         if (p->interrupt_count == 0)
 404                 return;
 405         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 406         if (!irq)
 407                 return;
 408
 409         for (i = 0; i < p->interrupt_count; i++)
 410                 if (p->interrupts[i])
 411                         __set_bit(p->interrupts[i], irq->map);
 412         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 413
 414         pnp_register_irq_resource(dev, option, irq);
 415 }
 416
 417 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 418                                              struct pnp_option *option,
 419                                              struct acpi_resource_io *io)
 420 {
 421         struct pnp_port *port;
 422
 423         if (io->address_length == 0)
 424                 return;
 425         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 426         if (!port)
 427                 return;
 428         port->min = io->minimum;
 429         port->max = io->maximum;
 430         port->align = io->alignment;
 431         port->size = io->address_length;
 432         port->flags = ACPI_DECODE_16 == io->io_decode ?
 433             PNP_PORT_FLAG_16BITADDR : 0;
 434         pnp_register_port_resource(dev, option, port);
 435 }
 436
 437 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 438                                                    struct pnp_option *option,
 439                                         struct acpi_resource_fixed_io *io)
 440 {
 441         struct pnp_port *port;
 442
 443         if (io->address_length == 0)
 444                 return;
 445         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 446         if (!port)
 447                 return;
 448         port->min = port->max = io->address;
 449         port->size = io->address_length;
 450         port->align = 0;
 451         port->flags = PNP_PORT_FLAG_FIXED;
 452         pnp_register_port_resource(dev, option, port);
 453 }
 454
 455 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 456                                               struct pnp_option *option,
 457                                               struct acpi_resource_memory24 *p)
 458 {
 459         struct pnp_mem *mem;
 460
 461         if (p->address_length == 0)
 462                 return;
 463         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 464         if (!mem)
 465                 return;
 466         mem->min = p->minimum;
 467         mem->max = p->maximum;
 468         mem->align = p->alignment;
 469         mem->size = p->address_length;
 470
 471         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 472             IORESOURCE_MEM_WRITEABLE : 0;
 473
 474         pnp_register_mem_resource(dev, option, mem);
 475 }
 476
 477 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 478                                               struct pnp_option *option,
 479                                               struct acpi_resource_memory32 *p)
 480 {
 481         struct pnp_mem *mem;
 482
 483         if (p->address_length == 0)
 484                 return;
 485         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 486         if (!mem)
 487                 return;
 488         mem->min = p->minimum;
 489         mem->max = p->maximum;
 490         mem->align = p->alignment;
 491         mem->size = p->address_length;
 492
 493         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 494             IORESOURCE_MEM_WRITEABLE : 0;
 495
 496         pnp_register_mem_resource(dev, option, mem);
 497 }
 498
 499 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 500                                                     struct pnp_option *option,
 501                                         struct acpi_resource_fixed_memory32 *p)
 502 {
 503         struct pnp_mem *mem;
 504
 505         if (p->address_length == 0)
 506                 return;
 507         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 508         if (!mem)
 509                 return;
 510         mem->min = mem->max = p->address;
 511         mem->size = p->address_length;
 512         mem->align = 0;
 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_address_option(struct pnp_dev *dev,
 521                                                 struct pnp_option *option,
 522                                                 struct acpi_resource *r)
 523 {
 524         struct acpi_resource_address64 addr, *p = &addr;
 525         acpi_status status;
 526         struct pnp_mem *mem;
 527         struct pnp_port *port;
 528
 529         status = acpi_resource_to_address64(r, p);
 530         if (!ACPI_SUCCESS(status)) {
 531                 pnp_warn("PnPACPI: failed to convert resource type %d",
 532                          r->type);
 533                 return;
 534         }
 535
 536         if (p->address_length == 0)
 537                 return;
 538
 539         if (p->resource_type == ACPI_MEMORY_RANGE) {
 540                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 541                 if (!mem)
 542                         return;
 543                 mem->min = mem->max = p->minimum;
 544                 mem->size = p->address_length;
 545                 mem->align = 0;
 546                 mem->flags = (p->info.mem.write_protect ==
 547                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 548                     : 0;
 549                 pnp_register_mem_resource(dev, option, mem);
 550         } else if (p->resource_type == ACPI_IO_RANGE) {
 551                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 552                 if (!port)
 553                         return;
 554                 port->min = port->max = p->minimum;
 555                 port->size = p->address_length;
 556                 port->align = 0;
 557                 port->flags = PNP_PORT_FLAG_FIXED;
 558                 pnp_register_port_resource(dev, option, port);
 559         }
 560 }
 561
 562 struct acpipnp_parse_option_s {
 563         struct pnp_option *option;
 564         struct pnp_option *option_independent;
 565         struct pnp_dev *dev;
 566 };
 567
 568 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 569                                                   void *data)
 570 {
 571         int priority = 0;
 572         struct acpipnp_parse_option_s *parse_data = data;
 573         struct pnp_dev *dev = parse_data->dev;
 574         struct pnp_option *option = parse_data->option;
 575
 576         switch (res->type) {
 577         case ACPI_RESOURCE_TYPE_IRQ:
 578                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 579                 break;
 580
 581         case ACPI_RESOURCE_TYPE_DMA:
 582                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 583                 break;
 584
 585         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 586                 switch (res->data.start_dpf.compatibility_priority) {
 587                 case ACPI_GOOD_CONFIGURATION:
 588                         priority = PNP_RES_PRIORITY_PREFERRED;
 589                         break;
 590
 591                 case ACPI_ACCEPTABLE_CONFIGURATION:
 592                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 593                         break;
 594
 595                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 596                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 597                         break;
 598                 default:
 599                         priority = PNP_RES_PRIORITY_INVALID;
 600                         break;
 601                 }
 602                 /* TBD: Consider performance/robustness bits */
 603                 option = pnp_register_dependent_option(dev, priority);
 604                 if (!option)
 605                         return AE_ERROR;
 606                 parse_data->option = option;
 607                 break;
 608
 609         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 610                 /*only one EndDependentFn is allowed */
 611                 if (!parse_data->option_independent) {
 612                         dev_warn(&dev->dev, "more than one EndDependentFn "
 613                                  "in _PRS\n");
 614                         return AE_ERROR;
 615                 }
 616                 parse_data->option = parse_data->option_independent;
 617                 parse_data->option_independent = NULL;
 618                 dev_dbg(&dev->dev, "end dependent options\n");
 619                 break;
 620
 621         case ACPI_RESOURCE_TYPE_IO:
 622                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 623                 break;
 624
 625         case ACPI_RESOURCE_TYPE_FIXED_IO:
 626                 pnpacpi_parse_fixed_port_option(dev, option,
 627                                                 &res->data.fixed_io);
 628                 break;
 629
 630         case ACPI_RESOURCE_TYPE_VENDOR:
 631         case ACPI_RESOURCE_TYPE_END_TAG:
 632                 break;
 633
 634         case ACPI_RESOURCE_TYPE_MEMORY24:
 635                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 636                 break;
 637
 638         case ACPI_RESOURCE_TYPE_MEMORY32:
 639                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 640                 break;
 641
 642         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 643                 pnpacpi_parse_fixed_mem32_option(dev, option,
 644                                                  &res->data.fixed_memory32);
 645                 break;
 646
 647         case ACPI_RESOURCE_TYPE_ADDRESS16:
 648         case ACPI_RESOURCE_TYPE_ADDRESS32:
 649         case ACPI_RESOURCE_TYPE_ADDRESS64:
 650                 pnpacpi_parse_address_option(dev, option, res);
 651                 break;
 652
 653         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 654                 break;
 655
 656         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 657                 pnpacpi_parse_ext_irq_option(dev, option,
 658                                              &res->data.extended_irq);
 659                 break;
 660
 661         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 662                 break;
 663
 664         default:
 665                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 666                          res->type);
 667                 return AE_ERROR;
 668         }
 669
 670         return AE_OK;
 671 }
 672
 673 acpi_status __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 674 {
 675         acpi_handle handle = dev->data;
 676         acpi_status status;
 677         struct acpipnp_parse_option_s parse_data;
 678
 679         dev_dbg(&dev->dev, "parse resource options\n");
 680
 681         parse_data.option = pnp_register_independent_option(dev);
 682         if (!parse_data.option)
 683                 return AE_ERROR;
 684         parse_data.option_independent = parse_data.option;
 685         parse_data.dev = dev;
 686         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 687                                      pnpacpi_option_resource, &parse_data);
 688
 689         return status;
 690 }
 691
 692 static int pnpacpi_supported_resource(struct acpi_resource *res)
 693 {
 694         switch (res->type) {
 695         case ACPI_RESOURCE_TYPE_IRQ:
 696         case ACPI_RESOURCE_TYPE_DMA:
 697         case ACPI_RESOURCE_TYPE_IO:
 698         case ACPI_RESOURCE_TYPE_FIXED_IO:
 699         case ACPI_RESOURCE_TYPE_MEMORY24:
 700         case ACPI_RESOURCE_TYPE_MEMORY32:
 701         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 702         case ACPI_RESOURCE_TYPE_ADDRESS16:
 703         case ACPI_RESOURCE_TYPE_ADDRESS32:
 704         case ACPI_RESOURCE_TYPE_ADDRESS64:
 705         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 706                 return 1;
 707         }
 708         return 0;
 709 }
 710
 711 /*
 712  * Set resource
 713  */
 714 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 715                                            void *data)
 716 {
 717         int *res_cnt = data;
 718
 719         if (pnpacpi_supported_resource(res))
 720                 (*res_cnt)++;
 721         return AE_OK;
 722 }
 723
 724 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 725 {
 726         struct acpi_resource **resource = data;
 727
 728         if (pnpacpi_supported_resource(res)) {
 729                 (*resource)->type = res->type;
 730                 (*resource)->length = sizeof(struct acpi_resource);
 731                 (*resource)++;
 732         }
 733
 734         return AE_OK;
 735 }
 736
 737 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 738                                     struct acpi_buffer *buffer)
 739 {
 740         acpi_handle handle = dev->data;
 741         struct acpi_resource *resource;
 742         int res_cnt = 0;
 743         acpi_status status;
 744
 745         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 746                                      pnpacpi_count_resources, &res_cnt);
 747         if (ACPI_FAILURE(status)) {
 748                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 749                 return -EINVAL;
 750         }
 751         if (!res_cnt)
 752                 return -EINVAL;
 753         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 754         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 755         if (!buffer->pointer)
 756                 return -ENOMEM;
 757
 758         resource = (struct acpi_resource *)buffer->pointer;
 759         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 760                                      pnpacpi_type_resources, &resource);
 761         if (ACPI_FAILURE(status)) {
 762                 kfree(buffer->pointer);
 763                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 764                 return -EINVAL;
 765         }
 766         /* resource will pointer the end resource now */
 767         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 768
 769         return 0;
 770 }
 771
 772 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 773                                struct acpi_resource *resource,
 774                                struct resource *p)
 775 {
 776         struct acpi_resource_irq *irq = &resource->data.irq;
 777         int triggering, polarity;
 778
 779         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 780         irq->triggering = triggering;
 781         irq->polarity = polarity;
 782         if (triggering == ACPI_EDGE_SENSITIVE)
 783                 irq->sharable = ACPI_EXCLUSIVE;
 784         else
 785                 irq->sharable = ACPI_SHARED;
 786         irq->interrupt_count = 1;
 787         irq->interrupts[0] = p->start;
 788
 789         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 790                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 791                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 792                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 793 }
 794
 795 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 796                                    struct acpi_resource *resource,
 797                                    struct resource *p)
 798 {
 799         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 800         int triggering, polarity;
 801
 802         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 803         extended_irq->producer_consumer = ACPI_CONSUMER;
 804         extended_irq->triggering = triggering;
 805         extended_irq->polarity = polarity;
 806         if (triggering == ACPI_EDGE_SENSITIVE)
 807                 extended_irq->sharable = ACPI_EXCLUSIVE;
 808         else
 809                 extended_irq->sharable = ACPI_SHARED;
 810         extended_irq->interrupt_count = 1;
 811         extended_irq->interrupts[0] = p->start;
 812
 813         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 814                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 815                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 816                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 817 }
 818
 819 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 820                                struct acpi_resource *resource,
 821                                struct resource *p)
 822 {
 823         struct acpi_resource_dma *dma = &resource->data.dma;
 824
 825         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 826         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 827         case IORESOURCE_DMA_TYPEA:
 828                 dma->type = ACPI_TYPE_A;
 829                 break;
 830         case IORESOURCE_DMA_TYPEB:
 831                 dma->type = ACPI_TYPE_B;
 832                 break;
 833         case IORESOURCE_DMA_TYPEF:
 834                 dma->type = ACPI_TYPE_F;
 835                 break;
 836         default:
 837                 dma->type = ACPI_COMPATIBILITY;
 838         }
 839
 840         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 841         case IORESOURCE_DMA_8BIT:
 842                 dma->transfer = ACPI_TRANSFER_8;
 843                 break;
 844         case IORESOURCE_DMA_8AND16BIT:
 845                 dma->transfer = ACPI_TRANSFER_8_16;
 846                 break;
 847         default:
 848                 dma->transfer = ACPI_TRANSFER_16;
 849         }
 850
 851         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 852         dma->channel_count = 1;
 853         dma->channels[0] = p->start;
 854
 855         dev_dbg(&dev->dev, "  encode dma %d "
 856                 "type %#x transfer %#x master %d\n",
 857                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 858 }
 859
 860 static void pnpacpi_encode_io(struct pnp_dev *dev,
 861                               struct acpi_resource *resource,
 862                               struct resource *p)
 863 {
 864         struct acpi_resource_io *io = &resource->data.io;
 865
 866         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 867         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 868             ACPI_DECODE_16 : ACPI_DECODE_10;
 869         io->minimum = p->start;
 870         io->maximum = p->end;
 871         io->alignment = 0;      /* Correct? */
 872         io->address_length = p->end - p->start + 1;
 873
 874         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 875                 (unsigned long long) p->start, (unsigned long long) p->end,
 876                 io->io_decode);
 877 }
 878
 879 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 880                                     struct acpi_resource *resource,
 881                                     struct resource *p)
 882 {
 883         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 884
 885         fixed_io->address = p->start;
 886         fixed_io->address_length = p->end - p->start + 1;
 887
 888         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 889                 (unsigned long long) p->start, (unsigned long long) p->end);
 890 }
 891
 892 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 893                                  struct acpi_resource *resource,
 894                                  struct resource *p)
 895 {
 896         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 897
 898         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 899         memory24->write_protect =
 900             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 901             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 902         memory24->minimum = p->start;
 903         memory24->maximum = p->end;
 904         memory24->alignment = 0;
 905         memory24->address_length = p->end - p->start + 1;
 906
 907         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 908                 (unsigned long long) p->start, (unsigned long long) p->end,
 909                 memory24->write_protect);
 910 }
 911
 912 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 913                                  struct acpi_resource *resource,
 914                                  struct resource *p)
 915 {
 916         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 917
 918         memory32->write_protect =
 919             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 920             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 921         memory32->minimum = p->start;
 922         memory32->maximum = p->end;
 923         memory32->alignment = 0;
 924         memory32->address_length = p->end - p->start + 1;
 925
 926         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 927                 (unsigned long long) p->start, (unsigned long long) p->end,
 928                 memory32->write_protect);
 929 }
 930
 931 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 932                                        struct acpi_resource *resource,
 933                                        struct resource *p)
 934 {
 935         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 936
 937         fixed_memory32->write_protect =
 938             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 939             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 940         fixed_memory32->address = p->start;
 941         fixed_memory32->address_length = p->end - p->start + 1;
 942
 943         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
 944                 "write_protect %#x\n",
 945                 (unsigned long long) p->start, (unsigned long long) p->end,
 946                 fixed_memory32->write_protect);
 947 }
 948
 949 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
 950 {
 951         int i = 0;
 952         /* pnpacpi_build_resource_template allocates extra mem */
 953         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 954         struct acpi_resource *resource = buffer->pointer;
 955         int port = 0, irq = 0, dma = 0, mem = 0;
 956
 957         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
 958         while (i < res_cnt) {
 959                 switch (resource->type) {
 960                 case ACPI_RESOURCE_TYPE_IRQ:
 961                         pnpacpi_encode_irq(dev, resource,
 962                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 963                         irq++;
 964                         break;
 965
 966                 case ACPI_RESOURCE_TYPE_DMA:
 967                         pnpacpi_encode_dma(dev, resource,
 968                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
 969                         dma++;
 970                         break;
 971                 case ACPI_RESOURCE_TYPE_IO:
 972                         pnpacpi_encode_io(dev, resource,
 973                                 pnp_get_resource(dev, IORESOURCE_IO, port));
 974                         port++;
 975                         break;
 976                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 977                         pnpacpi_encode_fixed_io(dev, resource,
 978                                 pnp_get_resource(dev, IORESOURCE_IO, port));
 979                         port++;
 980                         break;
 981                 case ACPI_RESOURCE_TYPE_MEMORY24:
 982                         pnpacpi_encode_mem24(dev, resource,
 983                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
 984                         mem++;
 985                         break;
 986                 case ACPI_RESOURCE_TYPE_MEMORY32:
 987                         pnpacpi_encode_mem32(dev, resource,
 988                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
 989                         mem++;
 990                         break;
 991                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 992                         pnpacpi_encode_fixed_mem32(dev, resource,
 993                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
 994                         mem++;
 995                         break;
 996                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 997                         pnpacpi_encode_ext_irq(dev, resource,
 998                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 999                         irq++;
1000                         break;
1001                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1002                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1003                 case ACPI_RESOURCE_TYPE_VENDOR:
1004                 case ACPI_RESOURCE_TYPE_END_TAG:
1005                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1006                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1007                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1008                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1009                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1010                 default:        /* other type */
1011                         dev_warn(&dev->dev, "can't encode unknown resource "
1012                                  "type %d\n", resource->type);
1013                         return -EINVAL;
1014                 }
1015                 resource++;
1016                 i++;
1017         }
1018         return 0;
1019 }