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