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 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 343 {
 344         acpi_handle handle = dev->data;
 345         acpi_status status;
 346
 347         dev_dbg(&dev->dev, "parse allocated resources\n");
 348
 349         pnp_init_resources(dev);
 350
 351         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 352                                      pnpacpi_allocated_resource, dev);
 353
 354         if (ACPI_FAILURE(status)) {
 355                 if (status != AE_NOT_FOUND)
 356                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 357                 return -EPERM;
 358         }
 359         return 0;
 360 }
 361
 362 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 363                                             struct pnp_option *option,
 364                                             struct acpi_resource_dma *p)
 365 {
 366         int i;
 367         struct pnp_dma *dma;
 368
 369         if (p->channel_count == 0)
 370                 return;
 371         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 372         if (!dma)
 373                 return;
 374
 375         for (i = 0; i < p->channel_count; i++)
 376                 dma->map |= 1 << p->channels[i];
 377
 378         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 379
 380         pnp_register_dma_resource(dev, option, dma);
 381 }
 382
 383 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 384                                             struct pnp_option *option,
 385                                             struct acpi_resource_irq *p)
 386 {
 387         int i;
 388         struct pnp_irq *irq;
 389
 390         if (p->interrupt_count == 0)
 391                 return;
 392         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 393         if (!irq)
 394                 return;
 395
 396         for (i = 0; i < p->interrupt_count; i++)
 397                 if (p->interrupts[i])
 398                         __set_bit(p->interrupts[i], irq->map);
 399         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 400
 401         pnp_register_irq_resource(dev, option, irq);
 402 }
 403
 404 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 405                                                 struct pnp_option *option,
 406                                         struct acpi_resource_extended_irq *p)
 407 {
 408         int i;
 409         struct pnp_irq *irq;
 410
 411         if (p->interrupt_count == 0)
 412                 return;
 413         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 414         if (!irq)
 415                 return;
 416
 417         for (i = 0; i < p->interrupt_count; i++)
 418                 if (p->interrupts[i])
 419                         __set_bit(p->interrupts[i], irq->map);
 420         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 421
 422         pnp_register_irq_resource(dev, option, irq);
 423 }
 424
 425 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 426                                              struct pnp_option *option,
 427                                              struct acpi_resource_io *io)
 428 {
 429         struct pnp_port *port;
 430
 431         if (io->address_length == 0)
 432                 return;
 433         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 434         if (!port)
 435                 return;
 436         port->min = io->minimum;
 437         port->max = io->maximum;
 438         port->align = io->alignment;
 439         port->size = io->address_length;
 440         port->flags = ACPI_DECODE_16 == io->io_decode ?
 441             PNP_PORT_FLAG_16BITADDR : 0;
 442         pnp_register_port_resource(dev, option, port);
 443 }
 444
 445 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 446                                                    struct pnp_option *option,
 447                                         struct acpi_resource_fixed_io *io)
 448 {
 449         struct pnp_port *port;
 450
 451         if (io->address_length == 0)
 452                 return;
 453         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 454         if (!port)
 455                 return;
 456         port->min = port->max = io->address;
 457         port->size = io->address_length;
 458         port->align = 0;
 459         port->flags = PNP_PORT_FLAG_FIXED;
 460         pnp_register_port_resource(dev, option, port);
 461 }
 462
 463 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 464                                               struct pnp_option *option,
 465                                               struct acpi_resource_memory24 *p)
 466 {
 467         struct pnp_mem *mem;
 468
 469         if (p->address_length == 0)
 470                 return;
 471         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 472         if (!mem)
 473                 return;
 474         mem->min = p->minimum;
 475         mem->max = p->maximum;
 476         mem->align = p->alignment;
 477         mem->size = p->address_length;
 478
 479         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 480             IORESOURCE_MEM_WRITEABLE : 0;
 481
 482         pnp_register_mem_resource(dev, option, mem);
 483 }
 484
 485 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 486                                               struct pnp_option *option,
 487                                               struct acpi_resource_memory32 *p)
 488 {
 489         struct pnp_mem *mem;
 490
 491         if (p->address_length == 0)
 492                 return;
 493         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 494         if (!mem)
 495                 return;
 496         mem->min = p->minimum;
 497         mem->max = p->maximum;
 498         mem->align = p->alignment;
 499         mem->size = p->address_length;
 500
 501         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 502             IORESOURCE_MEM_WRITEABLE : 0;
 503
 504         pnp_register_mem_resource(dev, option, mem);
 505 }
 506
 507 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 508                                                     struct pnp_option *option,
 509                                         struct acpi_resource_fixed_memory32 *p)
 510 {
 511         struct pnp_mem *mem;
 512
 513         if (p->address_length == 0)
 514                 return;
 515         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 516         if (!mem)
 517                 return;
 518         mem->min = mem->max = p->address;
 519         mem->size = p->address_length;
 520         mem->align = 0;
 521
 522         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 523             IORESOURCE_MEM_WRITEABLE : 0;
 524
 525         pnp_register_mem_resource(dev, option, mem);
 526 }
 527
 528 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 529                                                 struct pnp_option *option,
 530                                                 struct acpi_resource *r)
 531 {
 532         struct acpi_resource_address64 addr, *p = &addr;
 533         acpi_status status;
 534         struct pnp_mem *mem;
 535         struct pnp_port *port;
 536
 537         status = acpi_resource_to_address64(r, p);
 538         if (!ACPI_SUCCESS(status)) {
 539                 pnp_warn("PnPACPI: failed to convert resource type %d",
 540                          r->type);
 541                 return;
 542         }
 543
 544         if (p->address_length == 0)
 545                 return;
 546
 547         if (p->resource_type == ACPI_MEMORY_RANGE) {
 548                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 549                 if (!mem)
 550                         return;
 551                 mem->min = mem->max = p->minimum;
 552                 mem->size = p->address_length;
 553                 mem->align = 0;
 554                 mem->flags = (p->info.mem.write_protect ==
 555                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 556                     : 0;
 557                 pnp_register_mem_resource(dev, option, mem);
 558         } else if (p->resource_type == ACPI_IO_RANGE) {
 559                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 560                 if (!port)
 561                         return;
 562                 port->min = port->max = p->minimum;
 563                 port->size = p->address_length;
 564                 port->align = 0;
 565                 port->flags = PNP_PORT_FLAG_FIXED;
 566                 pnp_register_port_resource(dev, option, port);
 567         }
 568 }
 569
 570 struct acpipnp_parse_option_s {
 571         struct pnp_option *option;
 572         struct pnp_option *option_independent;
 573         struct pnp_dev *dev;
 574 };
 575
 576 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 577                                                   void *data)
 578 {
 579         int priority = 0;
 580         struct acpipnp_parse_option_s *parse_data = data;
 581         struct pnp_dev *dev = parse_data->dev;
 582         struct pnp_option *option = parse_data->option;
 583
 584         switch (res->type) {
 585         case ACPI_RESOURCE_TYPE_IRQ:
 586                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 587                 break;
 588
 589         case ACPI_RESOURCE_TYPE_DMA:
 590                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 591                 break;
 592
 593         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 594                 switch (res->data.start_dpf.compatibility_priority) {
 595                 case ACPI_GOOD_CONFIGURATION:
 596                         priority = PNP_RES_PRIORITY_PREFERRED;
 597                         break;
 598
 599                 case ACPI_ACCEPTABLE_CONFIGURATION:
 600                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 601                         break;
 602
 603                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 604                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 605                         break;
 606                 default:
 607                         priority = PNP_RES_PRIORITY_INVALID;
 608                         break;
 609                 }
 610                 /* TBD: Consider performance/robustness bits */
 611                 option = pnp_register_dependent_option(dev, priority);
 612                 if (!option)
 613                         return AE_ERROR;
 614                 parse_data->option = option;
 615                 break;
 616
 617         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 618                 /*only one EndDependentFn is allowed */
 619                 if (!parse_data->option_independent) {
 620                         dev_warn(&dev->dev, "more than one EndDependentFn "
 621                                  "in _PRS\n");
 622                         return AE_ERROR;
 623                 }
 624                 parse_data->option = parse_data->option_independent;
 625                 parse_data->option_independent = NULL;
 626                 dev_dbg(&dev->dev, "end dependent options\n");
 627                 break;
 628
 629         case ACPI_RESOURCE_TYPE_IO:
 630                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 631                 break;
 632
 633         case ACPI_RESOURCE_TYPE_FIXED_IO:
 634                 pnpacpi_parse_fixed_port_option(dev, option,
 635                                                 &res->data.fixed_io);
 636                 break;
 637
 638         case ACPI_RESOURCE_TYPE_VENDOR:
 639         case ACPI_RESOURCE_TYPE_END_TAG:
 640                 break;
 641
 642         case ACPI_RESOURCE_TYPE_MEMORY24:
 643                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 644                 break;
 645
 646         case ACPI_RESOURCE_TYPE_MEMORY32:
 647                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 648                 break;
 649
 650         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 651                 pnpacpi_parse_fixed_mem32_option(dev, option,
 652                                                  &res->data.fixed_memory32);
 653                 break;
 654
 655         case ACPI_RESOURCE_TYPE_ADDRESS16:
 656         case ACPI_RESOURCE_TYPE_ADDRESS32:
 657         case ACPI_RESOURCE_TYPE_ADDRESS64:
 658                 pnpacpi_parse_address_option(dev, option, res);
 659                 break;
 660
 661         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 662                 break;
 663
 664         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 665                 pnpacpi_parse_ext_irq_option(dev, option,
 666                                              &res->data.extended_irq);
 667                 break;
 668
 669         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 670                 break;
 671
 672         default:
 673                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 674                          res->type);
 675                 return AE_ERROR;
 676         }
 677
 678         return AE_OK;
 679 }
 680
 681 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 682 {
 683         acpi_handle handle = dev->data;
 684         acpi_status status;
 685         struct acpipnp_parse_option_s parse_data;
 686
 687         dev_dbg(&dev->dev, "parse resource options\n");
 688
 689         parse_data.option = pnp_register_independent_option(dev);
 690         if (!parse_data.option)
 691                 return -ENOMEM;
 692
 693         parse_data.option_independent = parse_data.option;
 694         parse_data.dev = dev;
 695         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 696                                      pnpacpi_option_resource, &parse_data);
 697
 698         if (ACPI_FAILURE(status)) {
 699                 if (status != AE_NOT_FOUND)
 700                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 701                 return -EPERM;
 702         }
 703         return 0;
 704 }
 705
 706 static int pnpacpi_supported_resource(struct acpi_resource *res)
 707 {
 708         switch (res->type) {
 709         case ACPI_RESOURCE_TYPE_IRQ:
 710         case ACPI_RESOURCE_TYPE_DMA:
 711         case ACPI_RESOURCE_TYPE_IO:
 712         case ACPI_RESOURCE_TYPE_FIXED_IO:
 713         case ACPI_RESOURCE_TYPE_MEMORY24:
 714         case ACPI_RESOURCE_TYPE_MEMORY32:
 715         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 716         case ACPI_RESOURCE_TYPE_ADDRESS16:
 717         case ACPI_RESOURCE_TYPE_ADDRESS32:
 718         case ACPI_RESOURCE_TYPE_ADDRESS64:
 719         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 720                 return 1;
 721         }
 722         return 0;
 723 }
 724
 725 /*
 726  * Set resource
 727  */
 728 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 729                                            void *data)
 730 {
 731         int *res_cnt = data;
 732
 733         if (pnpacpi_supported_resource(res))
 734                 (*res_cnt)++;
 735         return AE_OK;
 736 }
 737
 738 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 739 {
 740         struct acpi_resource **resource = data;
 741
 742         if (pnpacpi_supported_resource(res)) {
 743                 (*resource)->type = res->type;
 744                 (*resource)->length = sizeof(struct acpi_resource);
 745                 (*resource)++;
 746         }
 747
 748         return AE_OK;
 749 }
 750
 751 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 752                                     struct acpi_buffer *buffer)
 753 {
 754         acpi_handle handle = dev->data;
 755         struct acpi_resource *resource;
 756         int res_cnt = 0;
 757         acpi_status status;
 758
 759         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 760                                      pnpacpi_count_resources, &res_cnt);
 761         if (ACPI_FAILURE(status)) {
 762                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 763                 return -EINVAL;
 764         }
 765         if (!res_cnt)
 766                 return -EINVAL;
 767         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 768         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 769         if (!buffer->pointer)
 770                 return -ENOMEM;
 771
 772         resource = (struct acpi_resource *)buffer->pointer;
 773         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 774                                      pnpacpi_type_resources, &resource);
 775         if (ACPI_FAILURE(status)) {
 776                 kfree(buffer->pointer);
 777                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 778                 return -EINVAL;
 779         }
 780         /* resource will pointer the end resource now */
 781         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 782
 783         return 0;
 784 }
 785
 786 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 787                                struct acpi_resource *resource,
 788                                struct resource *p)
 789 {
 790         struct acpi_resource_irq *irq = &resource->data.irq;
 791         int triggering, polarity;
 792
 793         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 794         irq->triggering = triggering;
 795         irq->polarity = polarity;
 796         if (triggering == ACPI_EDGE_SENSITIVE)
 797                 irq->sharable = ACPI_EXCLUSIVE;
 798         else
 799                 irq->sharable = ACPI_SHARED;
 800         irq->interrupt_count = 1;
 801         irq->interrupts[0] = p->start;
 802
 803         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 804                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 805                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 806                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 807 }
 808
 809 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 810                                    struct acpi_resource *resource,
 811                                    struct resource *p)
 812 {
 813         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 814         int triggering, polarity;
 815
 816         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 817         extended_irq->producer_consumer = ACPI_CONSUMER;
 818         extended_irq->triggering = triggering;
 819         extended_irq->polarity = polarity;
 820         if (triggering == ACPI_EDGE_SENSITIVE)
 821                 extended_irq->sharable = ACPI_EXCLUSIVE;
 822         else
 823                 extended_irq->sharable = ACPI_SHARED;
 824         extended_irq->interrupt_count = 1;
 825         extended_irq->interrupts[0] = p->start;
 826
 827         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 828                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 829                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 830                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 831 }
 832
 833 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 834                                struct acpi_resource *resource,
 835                                struct resource *p)
 836 {
 837         struct acpi_resource_dma *dma = &resource->data.dma;
 838
 839         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 840         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 841         case IORESOURCE_DMA_TYPEA:
 842                 dma->type = ACPI_TYPE_A;
 843                 break;
 844         case IORESOURCE_DMA_TYPEB:
 845                 dma->type = ACPI_TYPE_B;
 846                 break;
 847         case IORESOURCE_DMA_TYPEF:
 848                 dma->type = ACPI_TYPE_F;
 849                 break;
 850         default:
 851                 dma->type = ACPI_COMPATIBILITY;
 852         }
 853
 854         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 855         case IORESOURCE_DMA_8BIT:
 856                 dma->transfer = ACPI_TRANSFER_8;
 857                 break;
 858         case IORESOURCE_DMA_8AND16BIT:
 859                 dma->transfer = ACPI_TRANSFER_8_16;
 860                 break;
 861         default:
 862                 dma->transfer = ACPI_TRANSFER_16;
 863         }
 864
 865         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 866         dma->channel_count = 1;
 867         dma->channels[0] = p->start;
 868
 869         dev_dbg(&dev->dev, "  encode dma %d "
 870                 "type %#x transfer %#x master %d\n",
 871                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 872 }
 873
 874 static void pnpacpi_encode_io(struct pnp_dev *dev,
 875                               struct acpi_resource *resource,
 876                               struct resource *p)
 877 {
 878         struct acpi_resource_io *io = &resource->data.io;
 879
 880         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 881         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 882             ACPI_DECODE_16 : ACPI_DECODE_10;
 883         io->minimum = p->start;
 884         io->maximum = p->end;
 885         io->alignment = 0;      /* Correct? */
 886         io->address_length = p->end - p->start + 1;
 887
 888         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 889                 (unsigned long long) p->start, (unsigned long long) p->end,
 890                 io->io_decode);
 891 }
 892
 893 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 894                                     struct acpi_resource *resource,
 895                                     struct resource *p)
 896 {
 897         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 898
 899         fixed_io->address = p->start;
 900         fixed_io->address_length = p->end - p->start + 1;
 901
 902         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 903                 (unsigned long long) p->start, (unsigned long long) p->end);
 904 }
 905
 906 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 907                                  struct acpi_resource *resource,
 908                                  struct resource *p)
 909 {
 910         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 911
 912         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 913         memory24->write_protect =
 914             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 915             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 916         memory24->minimum = p->start;
 917         memory24->maximum = p->end;
 918         memory24->alignment = 0;
 919         memory24->address_length = p->end - p->start + 1;
 920
 921         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 922                 (unsigned long long) p->start, (unsigned long long) p->end,
 923                 memory24->write_protect);
 924 }
 925
 926 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 927                                  struct acpi_resource *resource,
 928                                  struct resource *p)
 929 {
 930         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 931
 932         memory32->write_protect =
 933             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 934             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 935         memory32->minimum = p->start;
 936         memory32->maximum = p->end;
 937         memory32->alignment = 0;
 938         memory32->address_length = p->end - p->start + 1;
 939
 940         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 941                 (unsigned long long) p->start, (unsigned long long) p->end,
 942                 memory32->write_protect);
 943 }
 944
 945 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 946                                        struct acpi_resource *resource,
 947                                        struct resource *p)
 948 {
 949         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 950
 951         fixed_memory32->write_protect =
 952             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 953             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 954         fixed_memory32->address = p->start;
 955         fixed_memory32->address_length = p->end - p->start + 1;
 956
 957         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
 958                 "write_protect %#x\n",
 959                 (unsigned long long) p->start, (unsigned long long) p->end,
 960                 fixed_memory32->write_protect);
 961 }
 962
 963 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
 964 {
 965         int i = 0;
 966         /* pnpacpi_build_resource_template allocates extra mem */
 967         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 968         struct acpi_resource *resource = buffer->pointer;
 969         int port = 0, irq = 0, dma = 0, mem = 0;
 970
 971         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
 972         while (i < res_cnt) {
 973                 switch (resource->type) {
 974                 case ACPI_RESOURCE_TYPE_IRQ:
 975                         pnpacpi_encode_irq(dev, resource,
 976                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 977                         irq++;
 978                         break;
 979
 980                 case ACPI_RESOURCE_TYPE_DMA:
 981                         pnpacpi_encode_dma(dev, resource,
 982                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
 983                         dma++;
 984                         break;
 985                 case ACPI_RESOURCE_TYPE_IO:
 986                         pnpacpi_encode_io(dev, resource,
 987                                 pnp_get_resource(dev, IORESOURCE_IO, port));
 988                         port++;
 989                         break;
 990                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 991                         pnpacpi_encode_fixed_io(dev, resource,
 992                                 pnp_get_resource(dev, IORESOURCE_IO, port));
 993                         port++;
 994                         break;
 995                 case ACPI_RESOURCE_TYPE_MEMORY24:
 996                         pnpacpi_encode_mem24(dev, resource,
 997                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
 998                         mem++;
 999                         break;
1000                 case ACPI_RESOURCE_TYPE_MEMORY32:
1001                         pnpacpi_encode_mem32(dev, resource,
1002                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1003                         mem++;
1004                         break;
1005                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1006                         pnpacpi_encode_fixed_mem32(dev, resource,
1007                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1008                         mem++;
1009                         break;
1010                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1011                         pnpacpi_encode_ext_irq(dev, resource,
1012                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1013                         irq++;
1014                         break;
1015                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1016                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1017                 case ACPI_RESOURCE_TYPE_VENDOR:
1018                 case ACPI_RESOURCE_TYPE_END_TAG:
1019                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1020                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1021                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1022                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1023                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1024                 default:        /* other type */
1025                         dev_warn(&dev->dev, "can't encode unknown resource "
1026                                  "type %d\n", resource->type);
1027                         return -EINVAL;
1028                 }
1029                 resource++;
1030                 i++;
1031         }
1032         return 0;
1033 }