SAFE public projects git trees. - safe/jmp/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, int shareable)
  36 {
  37         int flags;
  38
  39         if (triggering == ACPI_LEVEL_SENSITIVE) {
  40                 if (polarity == ACPI_ACTIVE_LOW)
  41                         flags = IORESOURCE_IRQ_LOWLEVEL;
  42                 else
  43                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  44         } else {
  45                 if (polarity == ACPI_ACTIVE_LOW)
  46                         flags = IORESOURCE_IRQ_LOWEDGE;
  47                 else
  48                         flags = IORESOURCE_IRQ_HIGHEDGE;
  49         }
  50
  51         if (shareable)
  52                 flags |= IORESOURCE_IRQ_SHAREABLE;
  53
  54         return flags;
  55 }
  56
  57 static void decode_irq_flags(int flag, int *triggering, int *polarity)
  58 {
  59         switch (flag) {
  60         case IORESOURCE_IRQ_LOWLEVEL:
  61                 *triggering = ACPI_LEVEL_SENSITIVE;
  62                 *polarity = ACPI_ACTIVE_LOW;
  63                 break;
  64         case IORESOURCE_IRQ_HIGHLEVEL:
  65                 *triggering = ACPI_LEVEL_SENSITIVE;
  66                 *polarity = ACPI_ACTIVE_HIGH;
  67                 break;
  68         case IORESOURCE_IRQ_LOWEDGE:
  69                 *triggering = ACPI_EDGE_SENSITIVE;
  70                 *polarity = ACPI_ACTIVE_LOW;
  71                 break;
  72         case IORESOURCE_IRQ_HIGHEDGE:
  73                 *triggering = ACPI_EDGE_SENSITIVE;
  74                 *polarity = ACPI_ACTIVE_HIGH;
  75                 break;
  76         }
  77 }
  78
  79 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  80                                                 u32 gsi, int triggering,
  81                                                 int polarity, int shareable)
  82 {
  83         struct pnp_resource_table *res = &dev->res;
  84         int i = 0;
  85         int irq;
  86         int p, t;
  87         static unsigned char warned;
  88
  89         if (!valid_IRQ(gsi))
  90                 return;
  91
  92         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
  93                i < PNP_MAX_IRQ)
  94                 i++;
  95         if (i >= PNP_MAX_IRQ) {
  96                 if (!warned) {
  97                         printk(KERN_WARNING "pnpacpi: exceeded the max number"
  98                                 " of IRQ resources: %d\n", PNP_MAX_IRQ);
  99                         warned = 1;
 100                 }
 101                 return;
 102         }
 103         /*
 104          * in IO-APIC mode, use overrided attribute. Two reasons:
 105          * 1. BIOS bug in DSDT
 106          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 107          */
 108         if (!acpi_get_override_irq(gsi, &t, &p)) {
 109                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 110                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 111
 112                 if (triggering != t || polarity != p) {
 113                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 114                                 gsi, t ? "edge":"level", p ? "low":"high");
 115                         triggering = t;
 116                         polarity = p;
 117                 }
 118         }
 119
 120         res->irq_resource[i].flags = IORESOURCE_IRQ;    // Also clears _UNSET flag
 121         res->irq_resource[i].flags |= irq_flags(triggering, polarity, shareable);
 122         irq = acpi_register_gsi(gsi, triggering, polarity);
 123         if (irq < 0) {
 124                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
 125                 return;
 126         }
 127
 128         res->irq_resource[i].start = irq;
 129         res->irq_resource[i].end = irq;
 130         pcibios_penalize_isa_irq(irq, 1);
 131 }
 132
 133 static int dma_flags(int type, int bus_master, int transfer)
 134 {
 135         int flags = 0;
 136
 137         if (bus_master)
 138                 flags |= IORESOURCE_DMA_MASTER;
 139         switch (type) {
 140         case ACPI_COMPATIBILITY:
 141                 flags |= IORESOURCE_DMA_COMPATIBLE;
 142                 break;
 143         case ACPI_TYPE_A:
 144                 flags |= IORESOURCE_DMA_TYPEA;
 145                 break;
 146         case ACPI_TYPE_B:
 147                 flags |= IORESOURCE_DMA_TYPEB;
 148                 break;
 149         case ACPI_TYPE_F:
 150                 flags |= IORESOURCE_DMA_TYPEF;
 151                 break;
 152         default:
 153                 /* Set a default value ? */
 154                 flags |= IORESOURCE_DMA_COMPATIBLE;
 155                 pnp_err("Invalid DMA type");
 156         }
 157         switch (transfer) {
 158         case ACPI_TRANSFER_8:
 159                 flags |= IORESOURCE_DMA_8BIT;
 160                 break;
 161         case ACPI_TRANSFER_8_16:
 162                 flags |= IORESOURCE_DMA_8AND16BIT;
 163                 break;
 164         case ACPI_TRANSFER_16:
 165                 flags |= IORESOURCE_DMA_16BIT;
 166                 break;
 167         default:
 168                 /* Set a default value ? */
 169                 flags |= IORESOURCE_DMA_8AND16BIT;
 170                 pnp_err("Invalid DMA transfer type");
 171         }
 172
 173         return flags;
 174 }
 175
 176 static void pnpacpi_parse_allocated_dmaresource(struct pnp_dev *dev,
 177                                                 u32 dma, int flags)
 178 {
 179         struct pnp_resource_table *res = &dev->res;
 180         int i = 0;
 181         static unsigned char warned;
 182
 183         while (i < PNP_MAX_DMA &&
 184                !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 185                 i++;
 186         if (i < PNP_MAX_DMA) {
 187                 res->dma_resource[i].flags = IORESOURCE_DMA;    // Also clears _UNSET flag
 188                 res->dma_resource[i].flags |= flags;
 189                 if (dma == -1) {
 190                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 191                         return;
 192                 }
 193                 res->dma_resource[i].start = dma;
 194                 res->dma_resource[i].end = dma;
 195         } else if (!warned) {
 196                 printk(KERN_WARNING "pnpacpi: exceeded the max number of DMA "
 197                                 "resources: %d \n", PNP_MAX_DMA);
 198                 warned = 1;
 199         }
 200 }
 201
 202 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev,
 203                                                u64 io, u64 len, int io_decode)
 204 {
 205         struct pnp_resource_table *res = &dev->res;
 206         int i = 0;
 207         static unsigned char warned;
 208
 209         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 210                i < PNP_MAX_PORT)
 211                 i++;
 212         if (i < PNP_MAX_PORT) {
 213                 res->port_resource[i].flags = IORESOURCE_IO;    // Also clears _UNSET flag
 214                 if (io_decode == ACPI_DECODE_16)
 215                         res->port_resource[i].flags |= PNP_PORT_FLAG_16BITADDR;
 216                 if (len <= 0 || (io + len - 1) >= 0x10003) {
 217                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 218                         return;
 219                 }
 220                 res->port_resource[i].start = io;
 221                 res->port_resource[i].end = io + len - 1;
 222         } else if (!warned) {
 223                 printk(KERN_WARNING "pnpacpi: exceeded the max number of IO "
 224                                 "resources: %d \n", PNP_MAX_PORT);
 225                 warned = 1;
 226         }
 227 }
 228
 229 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 230                                                 u64 mem, u64 len,
 231                                                 int write_protect)
 232 {
 233         struct pnp_resource_table *res = &dev->res;
 234         int i = 0;
 235         static unsigned char warned;
 236
 237         while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
 238                (i < PNP_MAX_MEM))
 239                 i++;
 240         if (i < PNP_MAX_MEM) {
 241                 res->mem_resource[i].flags = IORESOURCE_MEM;    // Also clears _UNSET flag
 242                 if (len <= 0) {
 243                         res->mem_resource[i].flags |= IORESOURCE_DISABLED;
 244                         return;
 245                 }
 246                 if (write_protect == ACPI_READ_WRITE_MEMORY)
 247                         res->mem_resource[i].flags |= IORESOURCE_MEM_WRITEABLE;
 248
 249                 res->mem_resource[i].start = mem;
 250                 res->mem_resource[i].end = mem + len - 1;
 251         } else if (!warned) {
 252                 printk(KERN_WARNING "pnpacpi: exceeded the max number of mem "
 253                                 "resources: %d\n", PNP_MAX_MEM);
 254                 warned = 1;
 255         }
 256 }
 257
 258 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 259                                                   struct acpi_resource *res)
 260 {
 261         struct acpi_resource_address64 addr, *p = &addr;
 262         acpi_status status;
 263
 264         status = acpi_resource_to_address64(res, p);
 265         if (!ACPI_SUCCESS(status)) {
 266                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 267                          res->type);
 268                 return;
 269         }
 270
 271         if (p->producer_consumer == ACPI_PRODUCER)
 272                 return;
 273
 274         if (p->resource_type == ACPI_MEMORY_RANGE)
 275                 pnpacpi_parse_allocated_memresource(dev,
 276                         p->minimum, p->address_length,
 277                         p->info.mem.write_protect);
 278         else if (p->resource_type == ACPI_IO_RANGE)
 279                 pnpacpi_parse_allocated_ioresource(dev,
 280                         p->minimum, p->address_length,
 281                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 282                                 ACPI_DECODE_16);
 283 }
 284
 285 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 286                                               void *data)
 287 {
 288         struct pnp_dev *dev = data;
 289         struct acpi_resource_irq *irq;
 290         struct acpi_resource_dma *dma;
 291         struct acpi_resource_io *io;
 292         struct acpi_resource_fixed_io *fixed_io;
 293         struct acpi_resource_memory24 *memory24;
 294         struct acpi_resource_memory32 *memory32;
 295         struct acpi_resource_fixed_memory32 *fixed_memory32;
 296         struct acpi_resource_extended_irq *extended_irq;
 297         int i;
 298
 299         switch (res->type) {
 300         case ACPI_RESOURCE_TYPE_IRQ:
 301                 /*
 302                  * Per spec, only one interrupt per descriptor is allowed in
 303                  * _CRS, but some firmware violates this, so parse them all.
 304                  */
 305                 irq = &res->data.irq;
 306                 for (i = 0; i < irq->interrupt_count; i++) {
 307                         pnpacpi_parse_allocated_irqresource(dev,
 308                                 irq->interrupts[i],
 309                                 irq->triggering,
 310                                 irq->polarity,
 311                                 irq->sharable);
 312                 }
 313                 break;
 314
 315         case ACPI_RESOURCE_TYPE_DMA:
 316                 dma = &res->data.dma;
 317                 if (dma->channel_count > 0)
 318                         pnpacpi_parse_allocated_dmaresource(dev,
 319                                 dma->channels[0],
 320                                 dma_flags(dma->type, dma->bus_master,
 321                                           dma->transfer));
 322                 break;
 323
 324         case ACPI_RESOURCE_TYPE_IO:
 325                 io = &res->data.io;
 326                 pnpacpi_parse_allocated_ioresource(dev,
 327                         io->minimum,
 328                         io->address_length,
 329                         io->io_decode);
 330                 break;
 331
 332         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 333         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 334                 break;
 335
 336         case ACPI_RESOURCE_TYPE_FIXED_IO:
 337                 fixed_io = &res->data.fixed_io;
 338                 pnpacpi_parse_allocated_ioresource(dev,
 339                         fixed_io->address,
 340                         fixed_io->address_length,
 341                         ACPI_DECODE_10);
 342                 break;
 343
 344         case ACPI_RESOURCE_TYPE_VENDOR:
 345                 break;
 346
 347         case ACPI_RESOURCE_TYPE_END_TAG:
 348                 break;
 349
 350         case ACPI_RESOURCE_TYPE_MEMORY24:
 351                 memory24 = &res->data.memory24;
 352                 pnpacpi_parse_allocated_memresource(dev,
 353                         memory24->minimum,
 354                         memory24->address_length,
 355                         memory24->write_protect);
 356                 break;
 357         case ACPI_RESOURCE_TYPE_MEMORY32:
 358                 memory32 = &res->data.memory32;
 359                 pnpacpi_parse_allocated_memresource(dev,
 360                         memory32->minimum,
 361                         memory32->address_length,
 362                         memory32->write_protect);
 363                 break;
 364         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 365                 fixed_memory32 = &res->data.fixed_memory32;
 366                 pnpacpi_parse_allocated_memresource(dev,
 367                         fixed_memory32->address,
 368                         fixed_memory32->address_length,
 369                         fixed_memory32->write_protect);
 370                 break;
 371         case ACPI_RESOURCE_TYPE_ADDRESS16:
 372         case ACPI_RESOURCE_TYPE_ADDRESS32:
 373         case ACPI_RESOURCE_TYPE_ADDRESS64:
 374                 pnpacpi_parse_allocated_address_space(dev, res);
 375                 break;
 376
 377         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 378                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 379                         return AE_OK;
 380                 break;
 381
 382         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 383                 extended_irq = &res->data.extended_irq;
 384                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 385                         return AE_OK;
 386
 387                 for (i = 0; i < extended_irq->interrupt_count; i++) {
 388                         pnpacpi_parse_allocated_irqresource(dev,
 389                                 extended_irq->interrupts[i],
 390                                 extended_irq->triggering,
 391                                 extended_irq->polarity,
 392                                 extended_irq->sharable);
 393                 }
 394                 break;
 395
 396         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 397                 break;
 398
 399         default:
 400                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 401                          res->type);
 402                 return AE_ERROR;
 403         }
 404
 405         return AE_OK;
 406 }
 407
 408 acpi_status pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 409 {
 410         acpi_handle handle = dev->data;
 411
 412         dev_dbg(&dev->dev, "parse allocated resources\n");
 413
 414         pnp_init_resources(dev);
 415
 416         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 417                                    pnpacpi_allocated_resource, dev);
 418 }
 419
 420 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 421                                             struct pnp_option *option,
 422                                             struct acpi_resource_dma *p)
 423 {
 424         int i;
 425         struct pnp_dma *dma;
 426
 427         if (p->channel_count == 0)
 428                 return;
 429         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 430         if (!dma)
 431                 return;
 432
 433         for (i = 0; i < p->channel_count; i++)
 434                 dma->map |= 1 << p->channels[i];
 435
 436         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 437
 438         pnp_register_dma_resource(dev, option, dma);
 439 }
 440
 441 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 442                                             struct pnp_option *option,
 443                                             struct acpi_resource_irq *p)
 444 {
 445         int i;
 446         struct pnp_irq *irq;
 447
 448         if (p->interrupt_count == 0)
 449                 return;
 450         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 451         if (!irq)
 452                 return;
 453
 454         for (i = 0; i < p->interrupt_count; i++)
 455                 if (p->interrupts[i])
 456                         __set_bit(p->interrupts[i], irq->map);
 457         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 458
 459         pnp_register_irq_resource(dev, option, irq);
 460 }
 461
 462 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 463                                                 struct pnp_option *option,
 464                                         struct acpi_resource_extended_irq *p)
 465 {
 466         int i;
 467         struct pnp_irq *irq;
 468
 469         if (p->interrupt_count == 0)
 470                 return;
 471         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 472         if (!irq)
 473                 return;
 474
 475         for (i = 0; i < p->interrupt_count; i++)
 476                 if (p->interrupts[i])
 477                         __set_bit(p->interrupts[i], irq->map);
 478         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 479
 480         pnp_register_irq_resource(dev, option, irq);
 481 }
 482
 483 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 484                                              struct pnp_option *option,
 485                                              struct acpi_resource_io *io)
 486 {
 487         struct pnp_port *port;
 488
 489         if (io->address_length == 0)
 490                 return;
 491         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 492         if (!port)
 493                 return;
 494         port->min = io->minimum;
 495         port->max = io->maximum;
 496         port->align = io->alignment;
 497         port->size = io->address_length;
 498         port->flags = ACPI_DECODE_16 == io->io_decode ?
 499             PNP_PORT_FLAG_16BITADDR : 0;
 500         pnp_register_port_resource(dev, option, port);
 501 }
 502
 503 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 504                                                    struct pnp_option *option,
 505                                         struct acpi_resource_fixed_io *io)
 506 {
 507         struct pnp_port *port;
 508
 509         if (io->address_length == 0)
 510                 return;
 511         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 512         if (!port)
 513                 return;
 514         port->min = port->max = io->address;
 515         port->size = io->address_length;
 516         port->align = 0;
 517         port->flags = PNP_PORT_FLAG_FIXED;
 518         pnp_register_port_resource(dev, option, port);
 519 }
 520
 521 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 522                                               struct pnp_option *option,
 523                                               struct acpi_resource_memory24 *p)
 524 {
 525         struct pnp_mem *mem;
 526
 527         if (p->address_length == 0)
 528                 return;
 529         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 530         if (!mem)
 531                 return;
 532         mem->min = p->minimum;
 533         mem->max = p->maximum;
 534         mem->align = p->alignment;
 535         mem->size = p->address_length;
 536
 537         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 538             IORESOURCE_MEM_WRITEABLE : 0;
 539
 540         pnp_register_mem_resource(dev, option, mem);
 541 }
 542
 543 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 544                                               struct pnp_option *option,
 545                                               struct acpi_resource_memory32 *p)
 546 {
 547         struct pnp_mem *mem;
 548
 549         if (p->address_length == 0)
 550                 return;
 551         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 552         if (!mem)
 553                 return;
 554         mem->min = p->minimum;
 555         mem->max = p->maximum;
 556         mem->align = p->alignment;
 557         mem->size = p->address_length;
 558
 559         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 560             IORESOURCE_MEM_WRITEABLE : 0;
 561
 562         pnp_register_mem_resource(dev, option, mem);
 563 }
 564
 565 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 566                                                     struct pnp_option *option,
 567                                         struct acpi_resource_fixed_memory32 *p)
 568 {
 569         struct pnp_mem *mem;
 570
 571         if (p->address_length == 0)
 572                 return;
 573         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 574         if (!mem)
 575                 return;
 576         mem->min = mem->max = p->address;
 577         mem->size = p->address_length;
 578         mem->align = 0;
 579
 580         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 581             IORESOURCE_MEM_WRITEABLE : 0;
 582
 583         pnp_register_mem_resource(dev, option, mem);
 584 }
 585
 586 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 587                                                 struct pnp_option *option,
 588                                                 struct acpi_resource *r)
 589 {
 590         struct acpi_resource_address64 addr, *p = &addr;
 591         acpi_status status;
 592         struct pnp_mem *mem;
 593         struct pnp_port *port;
 594
 595         status = acpi_resource_to_address64(r, p);
 596         if (!ACPI_SUCCESS(status)) {
 597                 pnp_warn("PnPACPI: failed to convert resource type %d",
 598                          r->type);
 599                 return;
 600         }
 601
 602         if (p->address_length == 0)
 603                 return;
 604
 605         if (p->resource_type == ACPI_MEMORY_RANGE) {
 606                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 607                 if (!mem)
 608                         return;
 609                 mem->min = mem->max = p->minimum;
 610                 mem->size = p->address_length;
 611                 mem->align = 0;
 612                 mem->flags = (p->info.mem.write_protect ==
 613                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 614                     : 0;
 615                 pnp_register_mem_resource(dev, option, mem);
 616         } else if (p->resource_type == ACPI_IO_RANGE) {
 617                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 618                 if (!port)
 619                         return;
 620                 port->min = port->max = p->minimum;
 621                 port->size = p->address_length;
 622                 port->align = 0;
 623                 port->flags = PNP_PORT_FLAG_FIXED;
 624                 pnp_register_port_resource(dev, option, port);
 625         }
 626 }
 627
 628 struct acpipnp_parse_option_s {
 629         struct pnp_option *option;
 630         struct pnp_option *option_independent;
 631         struct pnp_dev *dev;
 632 };
 633
 634 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 635                                                   void *data)
 636 {
 637         int priority = 0;
 638         struct acpipnp_parse_option_s *parse_data = data;
 639         struct pnp_dev *dev = parse_data->dev;
 640         struct pnp_option *option = parse_data->option;
 641
 642         switch (res->type) {
 643         case ACPI_RESOURCE_TYPE_IRQ:
 644                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 645                 break;
 646
 647         case ACPI_RESOURCE_TYPE_DMA:
 648                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 649                 break;
 650
 651         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 652                 switch (res->data.start_dpf.compatibility_priority) {
 653                 case ACPI_GOOD_CONFIGURATION:
 654                         priority = PNP_RES_PRIORITY_PREFERRED;
 655                         break;
 656
 657                 case ACPI_ACCEPTABLE_CONFIGURATION:
 658                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 659                         break;
 660
 661                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 662                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 663                         break;
 664                 default:
 665                         priority = PNP_RES_PRIORITY_INVALID;
 666                         break;
 667                 }
 668                 /* TBD: Consider performance/robustness bits */
 669                 option = pnp_register_dependent_option(dev, priority);
 670                 if (!option)
 671                         return AE_ERROR;
 672                 parse_data->option = option;
 673                 break;
 674
 675         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 676                 /*only one EndDependentFn is allowed */
 677                 if (!parse_data->option_independent) {
 678                         dev_warn(&dev->dev, "more than one EndDependentFn "
 679                                  "in _PRS\n");
 680                         return AE_ERROR;
 681                 }
 682                 parse_data->option = parse_data->option_independent;
 683                 parse_data->option_independent = NULL;
 684                 dev_dbg(&dev->dev, "end dependent options\n");
 685                 break;
 686
 687         case ACPI_RESOURCE_TYPE_IO:
 688                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 689                 break;
 690
 691         case ACPI_RESOURCE_TYPE_FIXED_IO:
 692                 pnpacpi_parse_fixed_port_option(dev, option,
 693                                                 &res->data.fixed_io);
 694                 break;
 695
 696         case ACPI_RESOURCE_TYPE_VENDOR:
 697         case ACPI_RESOURCE_TYPE_END_TAG:
 698                 break;
 699
 700         case ACPI_RESOURCE_TYPE_MEMORY24:
 701                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 702                 break;
 703
 704         case ACPI_RESOURCE_TYPE_MEMORY32:
 705                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 706                 break;
 707
 708         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 709                 pnpacpi_parse_fixed_mem32_option(dev, option,
 710                                                  &res->data.fixed_memory32);
 711                 break;
 712
 713         case ACPI_RESOURCE_TYPE_ADDRESS16:
 714         case ACPI_RESOURCE_TYPE_ADDRESS32:
 715         case ACPI_RESOURCE_TYPE_ADDRESS64:
 716                 pnpacpi_parse_address_option(dev, option, res);
 717                 break;
 718
 719         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 720                 break;
 721
 722         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 723                 pnpacpi_parse_ext_irq_option(dev, option,
 724                                              &res->data.extended_irq);
 725                 break;
 726
 727         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 728                 break;
 729
 730         default:
 731                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 732                          res->type);
 733                 return AE_ERROR;
 734         }
 735
 736         return AE_OK;
 737 }
 738
 739 acpi_status __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 740 {
 741         acpi_handle handle = dev->data;
 742         acpi_status status;
 743         struct acpipnp_parse_option_s parse_data;
 744
 745         dev_dbg(&dev->dev, "parse resource options\n");
 746
 747         parse_data.option = pnp_register_independent_option(dev);
 748         if (!parse_data.option)
 749                 return AE_ERROR;
 750         parse_data.option_independent = parse_data.option;
 751         parse_data.dev = dev;
 752         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 753                                      pnpacpi_option_resource, &parse_data);
 754
 755         return status;
 756 }
 757
 758 static int pnpacpi_supported_resource(struct acpi_resource *res)
 759 {
 760         switch (res->type) {
 761         case ACPI_RESOURCE_TYPE_IRQ:
 762         case ACPI_RESOURCE_TYPE_DMA:
 763         case ACPI_RESOURCE_TYPE_IO:
 764         case ACPI_RESOURCE_TYPE_FIXED_IO:
 765         case ACPI_RESOURCE_TYPE_MEMORY24:
 766         case ACPI_RESOURCE_TYPE_MEMORY32:
 767         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 768         case ACPI_RESOURCE_TYPE_ADDRESS16:
 769         case ACPI_RESOURCE_TYPE_ADDRESS32:
 770         case ACPI_RESOURCE_TYPE_ADDRESS64:
 771         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 772                 return 1;
 773         }
 774         return 0;
 775 }
 776
 777 /*
 778  * Set resource
 779  */
 780 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 781                                            void *data)
 782 {
 783         int *res_cnt = data;
 784
 785         if (pnpacpi_supported_resource(res))
 786                 (*res_cnt)++;
 787         return AE_OK;
 788 }
 789
 790 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 791 {
 792         struct acpi_resource **resource = data;
 793
 794         if (pnpacpi_supported_resource(res)) {
 795                 (*resource)->type = res->type;
 796                 (*resource)->length = sizeof(struct acpi_resource);
 797                 (*resource)++;
 798         }
 799
 800         return AE_OK;
 801 }
 802
 803 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 804                                     struct acpi_buffer *buffer)
 805 {
 806         acpi_handle handle = dev->data;
 807         struct acpi_resource *resource;
 808         int res_cnt = 0;
 809         acpi_status status;
 810
 811         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 812                                      pnpacpi_count_resources, &res_cnt);
 813         if (ACPI_FAILURE(status)) {
 814                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 815                 return -EINVAL;
 816         }
 817         if (!res_cnt)
 818                 return -EINVAL;
 819         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 820         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 821         if (!buffer->pointer)
 822                 return -ENOMEM;
 823
 824         resource = (struct acpi_resource *)buffer->pointer;
 825         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 826                                      pnpacpi_type_resources, &resource);
 827         if (ACPI_FAILURE(status)) {
 828                 kfree(buffer->pointer);
 829                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 830                 return -EINVAL;
 831         }
 832         /* resource will pointer the end resource now */
 833         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 834
 835         return 0;
 836 }
 837
 838 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 839                                struct acpi_resource *resource,
 840                                struct resource *p)
 841 {
 842         struct acpi_resource_irq *irq = &resource->data.irq;
 843         int triggering, polarity;
 844
 845         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 846         irq->triggering = triggering;
 847         irq->polarity = polarity;
 848         if (triggering == ACPI_EDGE_SENSITIVE)
 849                 irq->sharable = ACPI_EXCLUSIVE;
 850         else
 851                 irq->sharable = ACPI_SHARED;
 852         irq->interrupt_count = 1;
 853         irq->interrupts[0] = p->start;
 854
 855         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 856                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 857                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 858                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 859 }
 860
 861 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 862                                    struct acpi_resource *resource,
 863                                    struct resource *p)
 864 {
 865         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 866         int triggering, polarity;
 867
 868         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 869         extended_irq->producer_consumer = ACPI_CONSUMER;
 870         extended_irq->triggering = triggering;
 871         extended_irq->polarity = polarity;
 872         if (triggering == ACPI_EDGE_SENSITIVE)
 873                 extended_irq->sharable = ACPI_EXCLUSIVE;
 874         else
 875                 extended_irq->sharable = ACPI_SHARED;
 876         extended_irq->interrupt_count = 1;
 877         extended_irq->interrupts[0] = p->start;
 878
 879         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 880                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 881                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 882                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 883 }
 884
 885 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 886                                struct acpi_resource *resource,
 887                                struct resource *p)
 888 {
 889         struct acpi_resource_dma *dma = &resource->data.dma;
 890
 891         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 892         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 893         case IORESOURCE_DMA_TYPEA:
 894                 dma->type = ACPI_TYPE_A;
 895                 break;
 896         case IORESOURCE_DMA_TYPEB:
 897                 dma->type = ACPI_TYPE_B;
 898                 break;
 899         case IORESOURCE_DMA_TYPEF:
 900                 dma->type = ACPI_TYPE_F;
 901                 break;
 902         default:
 903                 dma->type = ACPI_COMPATIBILITY;
 904         }
 905
 906         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 907         case IORESOURCE_DMA_8BIT:
 908                 dma->transfer = ACPI_TRANSFER_8;
 909                 break;
 910         case IORESOURCE_DMA_8AND16BIT:
 911                 dma->transfer = ACPI_TRANSFER_8_16;
 912                 break;
 913         default:
 914                 dma->transfer = ACPI_TRANSFER_16;
 915         }
 916
 917         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 918         dma->channel_count = 1;
 919         dma->channels[0] = p->start;
 920
 921         dev_dbg(&dev->dev, "  encode dma %d "
 922                 "type %#x transfer %#x master %d\n",
 923                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 924 }
 925
 926 static void pnpacpi_encode_io(struct pnp_dev *dev,
 927                               struct acpi_resource *resource,
 928                               struct resource *p)
 929 {
 930         struct acpi_resource_io *io = &resource->data.io;
 931
 932         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 933         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 934             ACPI_DECODE_16 : ACPI_DECODE_10;
 935         io->minimum = p->start;
 936         io->maximum = p->end;
 937         io->alignment = 0;      /* Correct? */
 938         io->address_length = p->end - p->start + 1;
 939
 940         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 941                 (unsigned long long) p->start, (unsigned long long) p->end,
 942                 io->io_decode);
 943 }
 944
 945 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 946                                     struct acpi_resource *resource,
 947                                     struct resource *p)
 948 {
 949         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 950
 951         fixed_io->address = p->start;
 952         fixed_io->address_length = p->end - p->start + 1;
 953
 954         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 955                 (unsigned long long) p->start, (unsigned long long) p->end);
 956 }
 957
 958 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 959                                  struct acpi_resource *resource,
 960                                  struct resource *p)
 961 {
 962         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 963
 964         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 965         memory24->write_protect =
 966             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 967             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 968         memory24->minimum = p->start;
 969         memory24->maximum = p->end;
 970         memory24->alignment = 0;
 971         memory24->address_length = p->end - p->start + 1;
 972
 973         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 974                 (unsigned long long) p->start, (unsigned long long) p->end,
 975                 memory24->write_protect);
 976 }
 977
 978 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 979                                  struct acpi_resource *resource,
 980                                  struct resource *p)
 981 {
 982         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 983
 984         memory32->write_protect =
 985             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 986             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 987         memory32->minimum = p->start;
 988         memory32->maximum = p->end;
 989         memory32->alignment = 0;
 990         memory32->address_length = p->end - p->start + 1;
 991
 992         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 993                 (unsigned long long) p->start, (unsigned long long) p->end,
 994                 memory32->write_protect);
 995 }
 996
 997 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 998                                        struct acpi_resource *resource,
 999                                        struct resource *p)
1000 {
1001         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1002
1003         fixed_memory32->write_protect =
1004             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
1005             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1006         fixed_memory32->address = p->start;
1007         fixed_memory32->address_length = p->end - p->start + 1;
1008
1009         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
1010                 "write_protect %#x\n",
1011                 (unsigned long long) p->start, (unsigned long long) p->end,
1012                 fixed_memory32->write_protect);
1013 }
1014
1015 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1016 {
1017         int i = 0;
1018         /* pnpacpi_build_resource_template allocates extra mem */
1019         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1020         struct acpi_resource *resource = buffer->pointer;
1021         int port = 0, irq = 0, dma = 0, mem = 0;
1022
1023         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1024         while (i < res_cnt) {
1025                 switch (resource->type) {
1026                 case ACPI_RESOURCE_TYPE_IRQ:
1027                         pnpacpi_encode_irq(dev, resource,
1028                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1029                         irq++;
1030                         break;
1031
1032                 case ACPI_RESOURCE_TYPE_DMA:
1033                         pnpacpi_encode_dma(dev, resource,
1034                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1035                         dma++;
1036                         break;
1037                 case ACPI_RESOURCE_TYPE_IO:
1038                         pnpacpi_encode_io(dev, resource,
1039                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1040                         port++;
1041                         break;
1042                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1043                         pnpacpi_encode_fixed_io(dev, resource,
1044                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1045                         port++;
1046                         break;
1047                 case ACPI_RESOURCE_TYPE_MEMORY24:
1048                         pnpacpi_encode_mem24(dev, resource,
1049                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1050                         mem++;
1051                         break;
1052                 case ACPI_RESOURCE_TYPE_MEMORY32:
1053                         pnpacpi_encode_mem32(dev, resource,
1054                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1055                         mem++;
1056                         break;
1057                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1058                         pnpacpi_encode_fixed_mem32(dev, resource,
1059                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1060                         mem++;
1061                         break;
1062                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1063                         pnpacpi_encode_ext_irq(dev, resource,
1064                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1065                         irq++;
1066                         break;
1067                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1068                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1069                 case ACPI_RESOURCE_TYPE_VENDOR:
1070                 case ACPI_RESOURCE_TYPE_END_TAG:
1071                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1072                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1073                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1074                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1075                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1076                 default:        /* other type */
1077                         dev_warn(&dev->dev, "can't encode unknown resource "
1078                                  "type %d\n", resource->type);
1079                         return -EINVAL;
1080                 }
1081                 resource++;
1082                 i++;
1083         }
1084         return 0;
1085 }