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 "pnpacpi.h"
  25
  26 #ifdef CONFIG_IA64
  27 #define valid_IRQ(i) (1)
  28 #else
  29 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  30 #endif
  31
  32 /*
  33  * Allocated Resources
  34  */
  35 static int irq_flags(int triggering, int polarity)
  36 {
  37         if (triggering == ACPI_LEVEL_SENSITIVE) {
  38                 if (polarity == ACPI_ACTIVE_LOW)
  39                         return IORESOURCE_IRQ_LOWLEVEL;
  40                 else
  41                         return IORESOURCE_IRQ_HIGHLEVEL;
  42         } else {
  43                 if (polarity == ACPI_ACTIVE_LOW)
  44                         return IORESOURCE_IRQ_LOWEDGE;
  45                 else
  46                         return IORESOURCE_IRQ_HIGHEDGE;
  47         }
  48 }
  49
  50 static void decode_irq_flags(int flag, int *triggering, int *polarity)
  51 {
  52         switch (flag) {
  53         case IORESOURCE_IRQ_LOWLEVEL:
  54                 *triggering = ACPI_LEVEL_SENSITIVE;
  55                 *polarity = ACPI_ACTIVE_LOW;
  56                 break;
  57         case IORESOURCE_IRQ_HIGHLEVEL:
  58                 *triggering = ACPI_LEVEL_SENSITIVE;
  59                 *polarity = ACPI_ACTIVE_HIGH;
  60                 break;
  61         case IORESOURCE_IRQ_LOWEDGE:
  62                 *triggering = ACPI_EDGE_SENSITIVE;
  63                 *polarity = ACPI_ACTIVE_LOW;
  64                 break;
  65         case IORESOURCE_IRQ_HIGHEDGE:
  66                 *triggering = ACPI_EDGE_SENSITIVE;
  67                 *polarity = ACPI_ACTIVE_HIGH;
  68                 break;
  69         }
  70 }
  71
  72 static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
  73                                                 u32 gsi, int triggering,
  74                                                 int polarity, int shareable)
  75 {
  76         int i = 0;
  77         int irq;
  78         int p, t;
  79         static unsigned char warned;
  80
  81         if (!valid_IRQ(gsi))
  82                 return;
  83
  84         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
  85                i < PNP_MAX_IRQ)
  86                 i++;
  87         if (i >= PNP_MAX_IRQ && !warned) {
  88                 printk(KERN_WARNING "pnpacpi: exceeded the max number of IRQ "
  89                                 "resources: %d \n", PNP_MAX_IRQ);
  90                 warned = 1;
  91                 return;
  92         }
  93         /*
  94          * in IO-APIC mode, use overrided attribute. Two reasons:
  95          * 1. BIOS bug in DSDT
  96          * 2. BIOS uses IO-APIC mode Interrupt Source Override
  97          */
  98         if (!acpi_get_override_irq(gsi, &t, &p)) {
  99                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 100                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 101
 102                 if (triggering != t || polarity != p) {
 103                         pnp_warn("IRQ %d override to %s, %s",
 104                                 gsi, t ? "edge":"level", p ? "low":"high");
 105                         triggering = t;
 106                         polarity = p;
 107                 }
 108         }
 109
 110         res->irq_resource[i].flags = IORESOURCE_IRQ;    // Also clears _UNSET flag
 111         res->irq_resource[i].flags |= irq_flags(triggering, polarity);
 112         irq = acpi_register_gsi(gsi, triggering, polarity);
 113         if (irq < 0) {
 114                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
 115                 return;
 116         }
 117
 118         if (shareable)
 119                 res->irq_resource[i].flags |= IORESOURCE_IRQ_SHAREABLE;
 120
 121         res->irq_resource[i].start = irq;
 122         res->irq_resource[i].end = irq;
 123         pcibios_penalize_isa_irq(irq, 1);
 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_dmaresource(struct pnp_resource_table *res,
 170                                                 u32 dma, int type,
 171                                                 int bus_master, int transfer)
 172 {
 173         int i = 0;
 174         static unsigned char warned;
 175
 176         while (i < PNP_MAX_DMA &&
 177                !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 178                 i++;
 179         if (i < PNP_MAX_DMA) {
 180                 res->dma_resource[i].flags = IORESOURCE_DMA;    // Also clears _UNSET flag
 181                 res->dma_resource[i].flags |=
 182                     dma_flags(type, bus_master, transfer);
 183                 if (dma == -1) {
 184                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 185                         return;
 186                 }
 187                 res->dma_resource[i].start = dma;
 188                 res->dma_resource[i].end = dma;
 189         } else if (!warned) {
 190                 printk(KERN_WARNING "pnpacpi: exceeded the max number of DMA "
 191                                 "resources: %d \n", PNP_MAX_DMA);
 192                 warned = 1;
 193         }
 194 }
 195
 196 static void pnpacpi_parse_allocated_ioresource(struct pnp_resource_table *res,
 197                                                u64 io, u64 len, int io_decode)
 198 {
 199         int i = 0;
 200         static unsigned char warned;
 201
 202         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 203                i < PNP_MAX_PORT)
 204                 i++;
 205         if (i < PNP_MAX_PORT) {
 206                 res->port_resource[i].flags = IORESOURCE_IO;    // Also clears _UNSET flag
 207                 if (io_decode == ACPI_DECODE_16)
 208                         res->port_resource[i].flags |= PNP_PORT_FLAG_16BITADDR;
 209                 if (len <= 0 || (io + len - 1) >= 0x10003) {
 210                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 211                         return;
 212                 }
 213                 res->port_resource[i].start = io;
 214                 res->port_resource[i].end = io + len - 1;
 215         } else if (!warned) {
 216                 printk(KERN_WARNING "pnpacpi: exceeded the max number of IO "
 217                                 "resources: %d \n", PNP_MAX_PORT);
 218                 warned = 1;
 219         }
 220 }
 221
 222 static void pnpacpi_parse_allocated_memresource(struct pnp_resource_table *res,
 223                                                 u64 mem, u64 len,
 224                                                 int write_protect)
 225 {
 226         int i = 0;
 227         static unsigned char warned;
 228
 229         while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
 230                (i < PNP_MAX_MEM))
 231                 i++;
 232         if (i < PNP_MAX_MEM) {
 233                 res->mem_resource[i].flags = IORESOURCE_MEM;    // Also clears _UNSET flag
 234                 if (len <= 0) {
 235                         res->mem_resource[i].flags |= IORESOURCE_DISABLED;
 236                         return;
 237                 }
 238                 if (write_protect == ACPI_READ_WRITE_MEMORY)
 239                         res->mem_resource[i].flags |= IORESOURCE_MEM_WRITEABLE;
 240
 241                 res->mem_resource[i].start = mem;
 242                 res->mem_resource[i].end = mem + len - 1;
 243         } else if (!warned) {
 244                 printk(KERN_WARNING "pnpacpi: exceeded the max number of mem "
 245                                 "resources: %d\n", PNP_MAX_MEM);
 246                 warned = 1;
 247         }
 248 }
 249
 250 static void pnpacpi_parse_allocated_address_space(struct pnp_resource_table *res_table,
 251                                                   struct acpi_resource *res)
 252 {
 253         struct acpi_resource_address64 addr, *p = &addr;
 254         acpi_status status;
 255
 256         status = acpi_resource_to_address64(res, p);
 257         if (!ACPI_SUCCESS(status)) {
 258                 pnp_warn("PnPACPI: failed to convert resource type %d",
 259                          res->type);
 260                 return;
 261         }
 262
 263         if (p->producer_consumer == ACPI_PRODUCER)
 264                 return;
 265
 266         if (p->resource_type == ACPI_MEMORY_RANGE)
 267                 pnpacpi_parse_allocated_memresource(res_table,
 268                         p->minimum, p->address_length,
 269                         p->info.mem.write_protect);
 270         else if (p->resource_type == ACPI_IO_RANGE)
 271                 pnpacpi_parse_allocated_ioresource(res_table,
 272                         p->minimum, p->address_length,
 273                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 274                                 ACPI_DECODE_16);
 275 }
 276
 277 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 278                                               void *data)
 279 {
 280         struct pnp_resource_table *res_table = data;
 281         int i;
 282
 283         switch (res->type) {
 284         case ACPI_RESOURCE_TYPE_IRQ:
 285                 /*
 286                  * Per spec, only one interrupt per descriptor is allowed in
 287                  * _CRS, but some firmware violates this, so parse them all.
 288                  */
 289                 for (i = 0; i < res->data.irq.interrupt_count; i++) {
 290                         pnpacpi_parse_allocated_irqresource(res_table,
 291                                 res->data.irq.interrupts[i],
 292                                 res->data.irq.triggering,
 293                                 res->data.irq.polarity,
 294                                 res->data.irq.sharable);
 295                 }
 296                 break;
 297
 298         case ACPI_RESOURCE_TYPE_DMA:
 299                 if (res->data.dma.channel_count > 0)
 300                         pnpacpi_parse_allocated_dmaresource(res_table,
 301                                 res->data.dma.channels[0],
 302                                 res->data.dma.type,
 303                                 res->data.dma.bus_master,
 304                                 res->data.dma.transfer);
 305                 break;
 306
 307         case ACPI_RESOURCE_TYPE_IO:
 308                 pnpacpi_parse_allocated_ioresource(res_table,
 309                         res->data.io.minimum,
 310                         res->data.io.address_length,
 311                         res->data.io.io_decode);
 312                 break;
 313
 314         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 315         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 316                 break;
 317
 318         case ACPI_RESOURCE_TYPE_FIXED_IO:
 319                 pnpacpi_parse_allocated_ioresource(res_table,
 320                         res->data.fixed_io.address,
 321                         res->data.fixed_io.address_length,
 322                         ACPI_DECODE_10);
 323                 break;
 324
 325         case ACPI_RESOURCE_TYPE_VENDOR:
 326                 break;
 327
 328         case ACPI_RESOURCE_TYPE_END_TAG:
 329                 break;
 330
 331         case ACPI_RESOURCE_TYPE_MEMORY24:
 332                 pnpacpi_parse_allocated_memresource(res_table,
 333                         res->data.memory24.minimum,
 334                         res->data.memory24.address_length,
 335                         res->data.memory24.write_protect);
 336                 break;
 337         case ACPI_RESOURCE_TYPE_MEMORY32:
 338                 pnpacpi_parse_allocated_memresource(res_table,
 339                         res->data.memory32.minimum,
 340                         res->data.memory32.address_length,
 341                         res->data.memory32.write_protect);
 342                 break;
 343         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 344                 pnpacpi_parse_allocated_memresource(res_table,
 345                         res->data.fixed_memory32.address,
 346                         res->data.fixed_memory32.address_length,
 347                         res->data.fixed_memory32.write_protect);
 348                 break;
 349         case ACPI_RESOURCE_TYPE_ADDRESS16:
 350         case ACPI_RESOURCE_TYPE_ADDRESS32:
 351         case ACPI_RESOURCE_TYPE_ADDRESS64:
 352                 pnpacpi_parse_allocated_address_space(res_table, res);
 353                 break;
 354
 355         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 356                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 357                         return AE_OK;
 358                 break;
 359
 360         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 361                 if (res->data.extended_irq.producer_consumer == ACPI_PRODUCER)
 362                         return AE_OK;
 363
 364                 for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
 365                         pnpacpi_parse_allocated_irqresource(res_table,
 366                                 res->data.extended_irq.interrupts[i],
 367                                 res->data.extended_irq.triggering,
 368                                 res->data.extended_irq.polarity,
 369                                 res->data.extended_irq.sharable);
 370                 }
 371                 break;
 372
 373         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 374                 break;
 375
 376         default:
 377                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 378                 return AE_ERROR;
 379         }
 380
 381         return AE_OK;
 382 }
 383
 384 acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle,
 385                                              struct pnp_resource_table * res)
 386 {
 387         /* Blank the resource table values */
 388         pnp_init_resource_table(res);
 389
 390         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 391                                    pnpacpi_allocated_resource, res);
 392 }
 393
 394 static __init void pnpacpi_parse_dma_option(struct pnp_option *option,
 395                                             struct acpi_resource_dma *p)
 396 {
 397         int i;
 398         struct pnp_dma *dma;
 399
 400         if (p->channel_count == 0)
 401                 return;
 402         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 403         if (!dma)
 404                 return;
 405
 406         for (i = 0; i < p->channel_count; i++)
 407                 dma->map |= 1 << p->channels[i];
 408
 409         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 410
 411         pnp_register_dma_resource(option, dma);
 412 }
 413
 414 static __init void pnpacpi_parse_irq_option(struct pnp_option *option,
 415                                             struct acpi_resource_irq *p)
 416 {
 417         int i;
 418         struct pnp_irq *irq;
 419
 420         if (p->interrupt_count == 0)
 421                 return;
 422         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 423         if (!irq)
 424                 return;
 425
 426         for (i = 0; i < p->interrupt_count; i++)
 427                 if (p->interrupts[i])
 428                         __set_bit(p->interrupts[i], irq->map);
 429         irq->flags = irq_flags(p->triggering, p->polarity);
 430
 431         pnp_register_irq_resource(option, irq);
 432 }
 433
 434 static __init void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
 435                                         struct acpi_resource_extended_irq *p)
 436 {
 437         int i;
 438         struct pnp_irq *irq;
 439
 440         if (p->interrupt_count == 0)
 441                 return;
 442         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 443         if (!irq)
 444                 return;
 445
 446         for (i = 0; i < p->interrupt_count; i++)
 447                 if (p->interrupts[i])
 448                         __set_bit(p->interrupts[i], irq->map);
 449         irq->flags = irq_flags(p->triggering, p->polarity);
 450
 451         pnp_register_irq_resource(option, irq);
 452 }
 453
 454 static __init void pnpacpi_parse_port_option(struct pnp_option *option,
 455                                              struct acpi_resource_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 = io->minimum;
 465         port->max = io->maximum;
 466         port->align = io->alignment;
 467         port->size = io->address_length;
 468         port->flags = ACPI_DECODE_16 == io->io_decode ?
 469             PNP_PORT_FLAG_16BITADDR : 0;
 470         pnp_register_port_resource(option, port);
 471 }
 472
 473 static __init void pnpacpi_parse_fixed_port_option(struct pnp_option *option,
 474                                         struct acpi_resource_fixed_io *io)
 475 {
 476         struct pnp_port *port;
 477
 478         if (io->address_length == 0)
 479                 return;
 480         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 481         if (!port)
 482                 return;
 483         port->min = port->max = io->address;
 484         port->size = io->address_length;
 485         port->align = 0;
 486         port->flags = PNP_PORT_FLAG_FIXED;
 487         pnp_register_port_resource(option, port);
 488 }
 489
 490 static __init void pnpacpi_parse_mem24_option(struct pnp_option *option,
 491                                               struct acpi_resource_memory24 *p)
 492 {
 493         struct pnp_mem *mem;
 494
 495         if (p->address_length == 0)
 496                 return;
 497         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 498         if (!mem)
 499                 return;
 500         mem->min = p->minimum;
 501         mem->max = p->maximum;
 502         mem->align = p->alignment;
 503         mem->size = p->address_length;
 504
 505         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 506             IORESOURCE_MEM_WRITEABLE : 0;
 507
 508         pnp_register_mem_resource(option, mem);
 509 }
 510
 511 static __init void pnpacpi_parse_mem32_option(struct pnp_option *option,
 512                                               struct acpi_resource_memory32 *p)
 513 {
 514         struct pnp_mem *mem;
 515
 516         if (p->address_length == 0)
 517                 return;
 518         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 519         if (!mem)
 520                 return;
 521         mem->min = p->minimum;
 522         mem->max = p->maximum;
 523         mem->align = p->alignment;
 524         mem->size = p->address_length;
 525
 526         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 527             IORESOURCE_MEM_WRITEABLE : 0;
 528
 529         pnp_register_mem_resource(option, mem);
 530 }
 531
 532 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
 533                                         struct acpi_resource_fixed_memory32 *p)
 534 {
 535         struct pnp_mem *mem;
 536
 537         if (p->address_length == 0)
 538                 return;
 539         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 540         if (!mem)
 541                 return;
 542         mem->min = mem->max = p->address;
 543         mem->size = p->address_length;
 544         mem->align = 0;
 545
 546         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 547             IORESOURCE_MEM_WRITEABLE : 0;
 548
 549         pnp_register_mem_resource(option, mem);
 550 }
 551
 552 static __init void pnpacpi_parse_address_option(struct pnp_option *option,
 553                                                 struct acpi_resource *r)
 554 {
 555         struct acpi_resource_address64 addr, *p = &addr;
 556         acpi_status status;
 557         struct pnp_mem *mem;
 558         struct pnp_port *port;
 559
 560         status = acpi_resource_to_address64(r, p);
 561         if (!ACPI_SUCCESS(status)) {
 562                 pnp_warn("PnPACPI: failed to convert resource type %d",
 563                          r->type);
 564                 return;
 565         }
 566
 567         if (p->address_length == 0)
 568                 return;
 569
 570         if (p->resource_type == ACPI_MEMORY_RANGE) {
 571                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 572                 if (!mem)
 573                         return;
 574                 mem->min = mem->max = p->minimum;
 575                 mem->size = p->address_length;
 576                 mem->align = 0;
 577                 mem->flags = (p->info.mem.write_protect ==
 578                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 579                     : 0;
 580                 pnp_register_mem_resource(option, mem);
 581         } else if (p->resource_type == ACPI_IO_RANGE) {
 582                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 583                 if (!port)
 584                         return;
 585                 port->min = port->max = p->minimum;
 586                 port->size = p->address_length;
 587                 port->align = 0;
 588                 port->flags = PNP_PORT_FLAG_FIXED;
 589                 pnp_register_port_resource(option, port);
 590         }
 591 }
 592
 593 struct acpipnp_parse_option_s {
 594         struct pnp_option *option;
 595         struct pnp_option *option_independent;
 596         struct pnp_dev *dev;
 597 };
 598
 599 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 600                                                   void *data)
 601 {
 602         int priority = 0;
 603         struct acpipnp_parse_option_s *parse_data = data;
 604         struct pnp_dev *dev = parse_data->dev;
 605         struct pnp_option *option = parse_data->option;
 606
 607         switch (res->type) {
 608         case ACPI_RESOURCE_TYPE_IRQ:
 609                 pnpacpi_parse_irq_option(option, &res->data.irq);
 610                 break;
 611
 612         case ACPI_RESOURCE_TYPE_DMA:
 613                 pnpacpi_parse_dma_option(option, &res->data.dma);
 614                 break;
 615
 616         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 617                 switch (res->data.start_dpf.compatibility_priority) {
 618                 case ACPI_GOOD_CONFIGURATION:
 619                         priority = PNP_RES_PRIORITY_PREFERRED;
 620                         break;
 621
 622                 case ACPI_ACCEPTABLE_CONFIGURATION:
 623                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 624                         break;
 625
 626                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 627                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 628                         break;
 629                 default:
 630                         priority = PNP_RES_PRIORITY_INVALID;
 631                         break;
 632                 }
 633                 /* TBD: Consider performance/robustness bits */
 634                 option = pnp_register_dependent_option(dev, priority);
 635                 if (!option)
 636                         return AE_ERROR;
 637                 parse_data->option = option;
 638                 break;
 639
 640         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 641                 /*only one EndDependentFn is allowed */
 642                 if (!parse_data->option_independent) {
 643                         pnp_warn("PnPACPI: more than one EndDependentFn");
 644                         return AE_ERROR;
 645                 }
 646                 parse_data->option = parse_data->option_independent;
 647                 parse_data->option_independent = NULL;
 648                 break;
 649
 650         case ACPI_RESOURCE_TYPE_IO:
 651                 pnpacpi_parse_port_option(option, &res->data.io);
 652                 break;
 653
 654         case ACPI_RESOURCE_TYPE_FIXED_IO:
 655                 pnpacpi_parse_fixed_port_option(option, &res->data.fixed_io);
 656                 break;
 657
 658         case ACPI_RESOURCE_TYPE_VENDOR:
 659         case ACPI_RESOURCE_TYPE_END_TAG:
 660                 break;
 661
 662         case ACPI_RESOURCE_TYPE_MEMORY24:
 663                 pnpacpi_parse_mem24_option(option, &res->data.memory24);
 664                 break;
 665
 666         case ACPI_RESOURCE_TYPE_MEMORY32:
 667                 pnpacpi_parse_mem32_option(option, &res->data.memory32);
 668                 break;
 669
 670         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 671                 pnpacpi_parse_fixed_mem32_option(option,
 672                                                  &res->data.fixed_memory32);
 673                 break;
 674
 675         case ACPI_RESOURCE_TYPE_ADDRESS16:
 676         case ACPI_RESOURCE_TYPE_ADDRESS32:
 677         case ACPI_RESOURCE_TYPE_ADDRESS64:
 678                 pnpacpi_parse_address_option(option, res);
 679                 break;
 680
 681         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 682                 break;
 683
 684         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 685                 pnpacpi_parse_ext_irq_option(option, &res->data.extended_irq);
 686                 break;
 687
 688         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 689                 break;
 690
 691         default:
 692                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 693                 return AE_ERROR;
 694         }
 695
 696         return AE_OK;
 697 }
 698
 699 acpi_status __init pnpacpi_parse_resource_option_data(acpi_handle handle,
 700                                                       struct pnp_dev *dev)
 701 {
 702         acpi_status status;
 703         struct acpipnp_parse_option_s parse_data;
 704
 705         parse_data.option = pnp_register_independent_option(dev);
 706         if (!parse_data.option)
 707                 return AE_ERROR;
 708         parse_data.option_independent = parse_data.option;
 709         parse_data.dev = dev;
 710         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 711                                      pnpacpi_option_resource, &parse_data);
 712
 713         return status;
 714 }
 715
 716 static int pnpacpi_supported_resource(struct acpi_resource *res)
 717 {
 718         switch (res->type) {
 719         case ACPI_RESOURCE_TYPE_IRQ:
 720         case ACPI_RESOURCE_TYPE_DMA:
 721         case ACPI_RESOURCE_TYPE_IO:
 722         case ACPI_RESOURCE_TYPE_FIXED_IO:
 723         case ACPI_RESOURCE_TYPE_MEMORY24:
 724         case ACPI_RESOURCE_TYPE_MEMORY32:
 725         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 726         case ACPI_RESOURCE_TYPE_ADDRESS16:
 727         case ACPI_RESOURCE_TYPE_ADDRESS32:
 728         case ACPI_RESOURCE_TYPE_ADDRESS64:
 729         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 730                 return 1;
 731         }
 732         return 0;
 733 }
 734
 735 /*
 736  * Set resource
 737  */
 738 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 739                                            void *data)
 740 {
 741         int *res_cnt = data;
 742
 743         if (pnpacpi_supported_resource(res))
 744                 (*res_cnt)++;
 745         return AE_OK;
 746 }
 747
 748 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 749 {
 750         struct acpi_resource **resource = data;
 751
 752         if (pnpacpi_supported_resource(res)) {
 753                 (*resource)->type = res->type;
 754                 (*resource)->length = sizeof(struct acpi_resource);
 755                 (*resource)++;
 756         }
 757
 758         return AE_OK;
 759 }
 760
 761 int pnpacpi_build_resource_template(acpi_handle handle,
 762                                     struct acpi_buffer *buffer)
 763 {
 764         struct acpi_resource *resource;
 765         int res_cnt = 0;
 766         acpi_status status;
 767
 768         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 769                                      pnpacpi_count_resources, &res_cnt);
 770         if (ACPI_FAILURE(status)) {
 771                 pnp_err("Evaluate _CRS failed");
 772                 return -EINVAL;
 773         }
 774         if (!res_cnt)
 775                 return -EINVAL;
 776         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 777         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 778         if (!buffer->pointer)
 779                 return -ENOMEM;
 780         pnp_dbg("Res cnt %d", res_cnt);
 781         resource = (struct acpi_resource *)buffer->pointer;
 782         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 783                                      pnpacpi_type_resources, &resource);
 784         if (ACPI_FAILURE(status)) {
 785                 kfree(buffer->pointer);
 786                 pnp_err("Evaluate _CRS failed");
 787                 return -EINVAL;
 788         }
 789         /* resource will pointer the end resource now */
 790         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 791
 792         return 0;
 793 }
 794
 795 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 796                                struct resource *p)
 797 {
 798         int triggering, polarity;
 799
 800         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 801         resource->data.irq.triggering = triggering;
 802         resource->data.irq.polarity = polarity;
 803         if (triggering == ACPI_EDGE_SENSITIVE)
 804                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 805         else
 806                 resource->data.irq.sharable = ACPI_SHARED;
 807         resource->data.irq.interrupt_count = 1;
 808         resource->data.irq.interrupts[0] = p->start;
 809 }
 810
 811 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 812                                    struct resource *p)
 813 {
 814         int triggering, polarity;
 815
 816         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 817         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 818         resource->data.extended_irq.triggering = triggering;
 819         resource->data.extended_irq.polarity = polarity;
 820         if (triggering == ACPI_EDGE_SENSITIVE)
 821                 resource->data.irq.sharable = ACPI_EXCLUSIVE;
 822         else
 823                 resource->data.irq.sharable = ACPI_SHARED;
 824         resource->data.extended_irq.interrupt_count = 1;
 825         resource->data.extended_irq.interrupts[0] = p->start;
 826 }
 827
 828 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 829                                struct resource *p)
 830 {
 831         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 832         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 833         case IORESOURCE_DMA_TYPEA:
 834                 resource->data.dma.type = ACPI_TYPE_A;
 835                 break;
 836         case IORESOURCE_DMA_TYPEB:
 837                 resource->data.dma.type = ACPI_TYPE_B;
 838                 break;
 839         case IORESOURCE_DMA_TYPEF:
 840                 resource->data.dma.type = ACPI_TYPE_F;
 841                 break;
 842         default:
 843                 resource->data.dma.type = ACPI_COMPATIBILITY;
 844         }
 845
 846         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 847         case IORESOURCE_DMA_8BIT:
 848                 resource->data.dma.transfer = ACPI_TRANSFER_8;
 849                 break;
 850         case IORESOURCE_DMA_8AND16BIT:
 851                 resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 852                 break;
 853         default:
 854                 resource->data.dma.transfer = ACPI_TRANSFER_16;
 855         }
 856
 857         resource->data.dma.bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 858         resource->data.dma.channel_count = 1;
 859         resource->data.dma.channels[0] = p->start;
 860 }
 861
 862 static void pnpacpi_encode_io(struct acpi_resource *resource,
 863                               struct resource *p)
 864 {
 865         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 866         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 867             ACPI_DECODE_16 : ACPI_DECODE_10;
 868         resource->data.io.minimum = p->start;
 869         resource->data.io.maximum = p->end;
 870         resource->data.io.alignment = 0;        /* Correct? */
 871         resource->data.io.address_length = p->end - p->start + 1;
 872 }
 873
 874 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 875                                     struct resource *p)
 876 {
 877         resource->data.fixed_io.address = p->start;
 878         resource->data.fixed_io.address_length = p->end - p->start + 1;
 879 }
 880
 881 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 882                                  struct resource *p)
 883 {
 884         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 885         resource->data.memory24.write_protect =
 886             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 887             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 888         resource->data.memory24.minimum = p->start;
 889         resource->data.memory24.maximum = p->end;
 890         resource->data.memory24.alignment = 0;
 891         resource->data.memory24.address_length = p->end - p->start + 1;
 892 }
 893
 894 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 895                                  struct resource *p)
 896 {
 897         resource->data.memory32.write_protect =
 898             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 899             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 900         resource->data.memory32.minimum = p->start;
 901         resource->data.memory32.maximum = p->end;
 902         resource->data.memory32.alignment = 0;
 903         resource->data.memory32.address_length = p->end - p->start + 1;
 904 }
 905
 906 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 907                                        struct resource *p)
 908 {
 909         resource->data.fixed_memory32.write_protect =
 910             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 911             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 912         resource->data.fixed_memory32.address = p->start;
 913         resource->data.fixed_memory32.address_length = p->end - p->start + 1;
 914 }
 915
 916 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 917                              struct acpi_buffer *buffer)
 918 {
 919         int i = 0;
 920         /* pnpacpi_build_resource_template allocates extra mem */
 921         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 922         struct acpi_resource *resource = buffer->pointer;
 923         int port = 0, irq = 0, dma = 0, mem = 0;
 924
 925         pnp_dbg("res cnt %d", res_cnt);
 926         while (i < res_cnt) {
 927                 switch (resource->type) {
 928                 case ACPI_RESOURCE_TYPE_IRQ:
 929                         pnp_dbg("Encode irq");
 930                         pnpacpi_encode_irq(resource,
 931                                            &res_table->irq_resource[irq]);
 932                         irq++;
 933                         break;
 934
 935                 case ACPI_RESOURCE_TYPE_DMA:
 936                         pnp_dbg("Encode dma");
 937                         pnpacpi_encode_dma(resource,
 938                                            &res_table->dma_resource[dma]);
 939                         dma++;
 940                         break;
 941                 case ACPI_RESOURCE_TYPE_IO:
 942                         pnp_dbg("Encode io");
 943                         pnpacpi_encode_io(resource,
 944                                           &res_table->port_resource[port]);
 945                         port++;
 946                         break;
 947                 case ACPI_RESOURCE_TYPE_FIXED_IO:
 948                         pnp_dbg("Encode fixed io");
 949                         pnpacpi_encode_fixed_io(resource,
 950                                                 &res_table->
 951                                                 port_resource[port]);
 952                         port++;
 953                         break;
 954                 case ACPI_RESOURCE_TYPE_MEMORY24:
 955                         pnp_dbg("Encode mem24");
 956                         pnpacpi_encode_mem24(resource,
 957                                              &res_table->mem_resource[mem]);
 958                         mem++;
 959                         break;
 960                 case ACPI_RESOURCE_TYPE_MEMORY32:
 961                         pnp_dbg("Encode mem32");
 962                         pnpacpi_encode_mem32(resource,
 963                                              &res_table->mem_resource[mem]);
 964                         mem++;
 965                         break;
 966                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 967                         pnp_dbg("Encode fixed mem32");
 968                         pnpacpi_encode_fixed_mem32(resource,
 969                                                    &res_table->
 970                                                    mem_resource[mem]);
 971                         mem++;
 972                         break;
 973                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 974                         pnp_dbg("Encode ext irq");
 975                         pnpacpi_encode_ext_irq(resource,
 976                                                &res_table->irq_resource[irq]);
 977                         irq++;
 978                         break;
 979                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 980                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 981                 case ACPI_RESOURCE_TYPE_VENDOR:
 982                 case ACPI_RESOURCE_TYPE_END_TAG:
 983                 case ACPI_RESOURCE_TYPE_ADDRESS16:
 984                 case ACPI_RESOURCE_TYPE_ADDRESS32:
 985                 case ACPI_RESOURCE_TYPE_ADDRESS64:
 986                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 987                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 988                 default:        /* other type */
 989                         pnp_warn("unknown resource type %d", resource->type);
 990                         return -EINVAL;
 991                 }
 992                 resource++;
 993                 i++;
 994         }
 995         return 0;
 996 }