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   1 /*
   2  * pnpacpi -- PnP ACPI driver
   3  *
   4  * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
   5  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/kernel.h>
  22 #include <linux/acpi.h>
  23 #include <linux/pci.h>
  24 #include <linux/pnp.h>
  25 #include "../base.h"
  26 #include "pnpacpi.h"
  27
  28 #ifdef CONFIG_IA64
  29 #define valid_IRQ(i) (1)
  30 #else
  31 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  32 #endif
  33
  34 /*
  35  * Allocated Resources
  36  */
  37 static int irq_flags(int triggering, int polarity, int shareable)
  38 {
  39         int flags;
  40
  41         if (triggering == ACPI_LEVEL_SENSITIVE) {
  42                 if (polarity == ACPI_ACTIVE_LOW)
  43                         flags = IORESOURCE_IRQ_LOWLEVEL;
  44                 else
  45                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  46         } else {
  47                 if (polarity == ACPI_ACTIVE_LOW)
  48                         flags = IORESOURCE_IRQ_LOWEDGE;
  49                 else
  50                         flags = IORESOURCE_IRQ_HIGHEDGE;
  51         }
  52
  53         if (shareable)
  54                 flags |= IORESOURCE_IRQ_SHAREABLE;
  55
  56         return flags;
  57 }
  58
  59 static void decode_irq_flags(int flag, int *triggering, int *polarity)
  60 {
  61         switch (flag) {
  62         case IORESOURCE_IRQ_LOWLEVEL:
  63                 *triggering = ACPI_LEVEL_SENSITIVE;
  64                 *polarity = ACPI_ACTIVE_LOW;
  65                 break;
  66         case IORESOURCE_IRQ_HIGHLEVEL:
  67                 *triggering = ACPI_LEVEL_SENSITIVE;
  68                 *polarity = ACPI_ACTIVE_HIGH;
  69                 break;
  70         case IORESOURCE_IRQ_LOWEDGE:
  71                 *triggering = ACPI_EDGE_SENSITIVE;
  72                 *polarity = ACPI_ACTIVE_LOW;
  73                 break;
  74         case IORESOURCE_IRQ_HIGHEDGE:
  75                 *triggering = ACPI_EDGE_SENSITIVE;
  76                 *polarity = ACPI_ACTIVE_HIGH;
  77                 break;
  78         }
  79 }
  80
  81 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  82                                                 u32 gsi, int triggering,
  83                                                 int polarity, int shareable)
  84 {
  85         int irq, flags;
  86         int p, t;
  87
  88         if (!valid_IRQ(gsi))
  89                 return;
  90
  91         /*
  92          * in IO-APIC mode, use overrided attribute. Two reasons:
  93          * 1. BIOS bug in DSDT
  94          * 2. BIOS uses IO-APIC mode Interrupt Source Override
  95          */
  96         if (!acpi_get_override_irq(gsi, &t, &p)) {
  97                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
  98                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
  99
 100                 if (triggering != t || polarity != p) {
 101                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 102                                 gsi, t ? "edge":"level", p ? "low":"high");
 103                         triggering = t;
 104                         polarity = p;
 105                 }
 106         }
 107
 108         flags = irq_flags(triggering, polarity, shareable);
 109         irq = acpi_register_gsi(gsi, triggering, polarity);
 110         if (irq >= 0)
 111                 pcibios_penalize_isa_irq(irq, 1);
 112         else
 113                 flags |= IORESOURCE_DISABLED;
 114
 115         pnp_add_irq_resource(dev, irq, flags);
 116 }
 117
 118 static int dma_flags(int type, int bus_master, int transfer)
 119 {
 120         int flags = 0;
 121
 122         if (bus_master)
 123                 flags |= IORESOURCE_DMA_MASTER;
 124         switch (type) {
 125         case ACPI_COMPATIBILITY:
 126                 flags |= IORESOURCE_DMA_COMPATIBLE;
 127                 break;
 128         case ACPI_TYPE_A:
 129                 flags |= IORESOURCE_DMA_TYPEA;
 130                 break;
 131         case ACPI_TYPE_B:
 132                 flags |= IORESOURCE_DMA_TYPEB;
 133                 break;
 134         case ACPI_TYPE_F:
 135                 flags |= IORESOURCE_DMA_TYPEF;
 136                 break;
 137         default:
 138                 /* Set a default value ? */
 139                 flags |= IORESOURCE_DMA_COMPATIBLE;
 140                 pnp_err("Invalid DMA type");
 141         }
 142         switch (transfer) {
 143         case ACPI_TRANSFER_8:
 144                 flags |= IORESOURCE_DMA_8BIT;
 145                 break;
 146         case ACPI_TRANSFER_8_16:
 147                 flags |= IORESOURCE_DMA_8AND16BIT;
 148                 break;
 149         case ACPI_TRANSFER_16:
 150                 flags |= IORESOURCE_DMA_16BIT;
 151                 break;
 152         default:
 153                 /* Set a default value ? */
 154                 flags |= IORESOURCE_DMA_8AND16BIT;
 155                 pnp_err("Invalid DMA transfer type");
 156         }
 157
 158         return flags;
 159 }
 160
 161 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev,
 162                                                u64 io, u64 len, int io_decode)
 163 {
 164         struct resource *res;
 165         int i;
 166         static unsigned char warned;
 167
 168         for (i = 0; i < PNP_MAX_PORT; i++) {
 169                 res = pnp_get_resource(dev, IORESOURCE_IO, i);
 170                 if (!pnp_resource_valid(res))
 171                         break;
 172         }
 173         if (i < PNP_MAX_PORT) {
 174                 res->flags = IORESOURCE_IO;     // Also clears _UNSET flag
 175                 if (io_decode == ACPI_DECODE_16)
 176                         res->flags |= PNP_PORT_FLAG_16BITADDR;
 177                 if (len <= 0 || (io + len - 1) >= 0x10003) {
 178                         res->flags |= IORESOURCE_DISABLED;
 179                         return;
 180                 }
 181                 res->start = io;
 182                 res->end = io + len - 1;
 183         } else if (!warned) {
 184                 printk(KERN_WARNING "pnpacpi: exceeded the max number of IO "
 185                                 "resources: %d \n", PNP_MAX_PORT);
 186                 warned = 1;
 187         }
 188 }
 189
 190 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 191                                                 u64 mem, u64 len,
 192                                                 int write_protect)
 193 {
 194         struct resource *res;
 195         int i;
 196         static unsigned char warned;
 197
 198         for (i = 0; i < PNP_MAX_MEM; i++) {
 199                 res = pnp_get_resource(dev, IORESOURCE_MEM, i);
 200                 if (!pnp_resource_valid(res))
 201                         break;
 202         }
 203         if (i < PNP_MAX_MEM) {
 204                 res->flags = IORESOURCE_MEM;    // Also clears _UNSET flag
 205                 if (len <= 0) {
 206                         res->flags |= IORESOURCE_DISABLED;
 207                         return;
 208                 }
 209                 if (write_protect == ACPI_READ_WRITE_MEMORY)
 210                         res->flags |= IORESOURCE_MEM_WRITEABLE;
 211
 212                 res->start = mem;
 213                 res->end = mem + len - 1;
 214         } else if (!warned) {
 215                 printk(KERN_WARNING "pnpacpi: exceeded the max number of mem "
 216                                 "resources: %d\n", PNP_MAX_MEM);
 217                 warned = 1;
 218         }
 219 }
 220
 221 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 222                                                   struct acpi_resource *res)
 223 {
 224         struct acpi_resource_address64 addr, *p = &addr;
 225         acpi_status status;
 226
 227         status = acpi_resource_to_address64(res, p);
 228         if (!ACPI_SUCCESS(status)) {
 229                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 230                          res->type);
 231                 return;
 232         }
 233
 234         if (p->producer_consumer == ACPI_PRODUCER)
 235                 return;
 236
 237         if (p->resource_type == ACPI_MEMORY_RANGE)
 238                 pnpacpi_parse_allocated_memresource(dev,
 239                         p->minimum, p->address_length,
 240                         p->info.mem.write_protect);
 241         else if (p->resource_type == ACPI_IO_RANGE)
 242                 pnpacpi_parse_allocated_ioresource(dev,
 243                         p->minimum, p->address_length,
 244                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 245                                 ACPI_DECODE_16);
 246 }
 247
 248 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 249                                               void *data)
 250 {
 251         struct pnp_dev *dev = data;
 252         struct acpi_resource_irq *irq;
 253         struct acpi_resource_dma *dma;
 254         struct acpi_resource_io *io;
 255         struct acpi_resource_fixed_io *fixed_io;
 256         struct acpi_resource_memory24 *memory24;
 257         struct acpi_resource_memory32 *memory32;
 258         struct acpi_resource_fixed_memory32 *fixed_memory32;
 259         struct acpi_resource_extended_irq *extended_irq;
 260         int i, flags;
 261
 262         switch (res->type) {
 263         case ACPI_RESOURCE_TYPE_IRQ:
 264                 /*
 265                  * Per spec, only one interrupt per descriptor is allowed in
 266                  * _CRS, but some firmware violates this, so parse them all.
 267                  */
 268                 irq = &res->data.irq;
 269                 for (i = 0; i < irq->interrupt_count; i++) {
 270                         pnpacpi_parse_allocated_irqresource(dev,
 271                                 irq->interrupts[i],
 272                                 irq->triggering,
 273                                 irq->polarity,
 274                                 irq->sharable);
 275                 }
 276                 break;
 277
 278         case ACPI_RESOURCE_TYPE_DMA:
 279                 dma = &res->data.dma;
 280                 if (dma->channel_count > 0) {
 281                         flags = dma_flags(dma->type, dma->bus_master,
 282                                           dma->transfer);
 283                         if (dma->channels[0] == (u8) -1)
 284                                 flags |= IORESOURCE_DISABLED;
 285                         pnp_add_dma_resource(dev, dma->channels[0], flags);
 286                 }
 287                 break;
 288
 289         case ACPI_RESOURCE_TYPE_IO:
 290                 io = &res->data.io;
 291                 pnpacpi_parse_allocated_ioresource(dev,
 292                         io->minimum,
 293                         io->address_length,
 294                         io->io_decode);
 295                 break;
 296
 297         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 298         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 299                 break;
 300
 301         case ACPI_RESOURCE_TYPE_FIXED_IO:
 302                 fixed_io = &res->data.fixed_io;
 303                 pnpacpi_parse_allocated_ioresource(dev,
 304                         fixed_io->address,
 305                         fixed_io->address_length,
 306                         ACPI_DECODE_10);
 307                 break;
 308
 309         case ACPI_RESOURCE_TYPE_VENDOR:
 310                 break;
 311
 312         case ACPI_RESOURCE_TYPE_END_TAG:
 313                 break;
 314
 315         case ACPI_RESOURCE_TYPE_MEMORY24:
 316                 memory24 = &res->data.memory24;
 317                 pnpacpi_parse_allocated_memresource(dev,
 318                         memory24->minimum,
 319                         memory24->address_length,
 320                         memory24->write_protect);
 321                 break;
 322         case ACPI_RESOURCE_TYPE_MEMORY32:
 323                 memory32 = &res->data.memory32;
 324                 pnpacpi_parse_allocated_memresource(dev,
 325                         memory32->minimum,
 326                         memory32->address_length,
 327                         memory32->write_protect);
 328                 break;
 329         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 330                 fixed_memory32 = &res->data.fixed_memory32;
 331                 pnpacpi_parse_allocated_memresource(dev,
 332                         fixed_memory32->address,
 333                         fixed_memory32->address_length,
 334                         fixed_memory32->write_protect);
 335                 break;
 336         case ACPI_RESOURCE_TYPE_ADDRESS16:
 337         case ACPI_RESOURCE_TYPE_ADDRESS32:
 338         case ACPI_RESOURCE_TYPE_ADDRESS64:
 339                 pnpacpi_parse_allocated_address_space(dev, res);
 340                 break;
 341
 342         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 343                 if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
 344                         return AE_OK;
 345                 break;
 346
 347         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 348                 extended_irq = &res->data.extended_irq;
 349                 if (extended_irq->producer_consumer == ACPI_PRODUCER)
 350                         return AE_OK;
 351
 352                 for (i = 0; i < extended_irq->interrupt_count; i++) {
 353                         pnpacpi_parse_allocated_irqresource(dev,
 354                                 extended_irq->interrupts[i],
 355                                 extended_irq->triggering,
 356                                 extended_irq->polarity,
 357                                 extended_irq->sharable);
 358                 }
 359                 break;
 360
 361         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 362                 break;
 363
 364         default:
 365                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 366                          res->type);
 367                 return AE_ERROR;
 368         }
 369
 370         return AE_OK;
 371 }
 372
 373 acpi_status pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 374 {
 375         acpi_handle handle = dev->data;
 376
 377         dev_dbg(&dev->dev, "parse allocated resources\n");
 378
 379         pnp_init_resources(dev);
 380
 381         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 382                                    pnpacpi_allocated_resource, dev);
 383 }
 384
 385 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 386                                             struct pnp_option *option,
 387                                             struct acpi_resource_dma *p)
 388 {
 389         int i;
 390         struct pnp_dma *dma;
 391
 392         if (p->channel_count == 0)
 393                 return;
 394         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 395         if (!dma)
 396                 return;
 397
 398         for (i = 0; i < p->channel_count; i++)
 399                 dma->map |= 1 << p->channels[i];
 400
 401         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 402
 403         pnp_register_dma_resource(dev, option, dma);
 404 }
 405
 406 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 407                                             struct pnp_option *option,
 408                                             struct acpi_resource_irq *p)
 409 {
 410         int i;
 411         struct pnp_irq *irq;
 412
 413         if (p->interrupt_count == 0)
 414                 return;
 415         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 416         if (!irq)
 417                 return;
 418
 419         for (i = 0; i < p->interrupt_count; i++)
 420                 if (p->interrupts[i])
 421                         __set_bit(p->interrupts[i], irq->map);
 422         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 423
 424         pnp_register_irq_resource(dev, option, irq);
 425 }
 426
 427 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 428                                                 struct pnp_option *option,
 429                                         struct acpi_resource_extended_irq *p)
 430 {
 431         int i;
 432         struct pnp_irq *irq;
 433
 434         if (p->interrupt_count == 0)
 435                 return;
 436         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 437         if (!irq)
 438                 return;
 439
 440         for (i = 0; i < p->interrupt_count; i++)
 441                 if (p->interrupts[i])
 442                         __set_bit(p->interrupts[i], irq->map);
 443         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 444
 445         pnp_register_irq_resource(dev, option, irq);
 446 }
 447
 448 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 449                                              struct pnp_option *option,
 450                                              struct acpi_resource_io *io)
 451 {
 452         struct pnp_port *port;
 453
 454         if (io->address_length == 0)
 455                 return;
 456         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 457         if (!port)
 458                 return;
 459         port->min = io->minimum;
 460         port->max = io->maximum;
 461         port->align = io->alignment;
 462         port->size = io->address_length;
 463         port->flags = ACPI_DECODE_16 == io->io_decode ?
 464             PNP_PORT_FLAG_16BITADDR : 0;
 465         pnp_register_port_resource(dev, option, port);
 466 }
 467
 468 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 469                                                    struct pnp_option *option,
 470                                         struct acpi_resource_fixed_io *io)
 471 {
 472         struct pnp_port *port;
 473
 474         if (io->address_length == 0)
 475                 return;
 476         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 477         if (!port)
 478                 return;
 479         port->min = port->max = io->address;
 480         port->size = io->address_length;
 481         port->align = 0;
 482         port->flags = PNP_PORT_FLAG_FIXED;
 483         pnp_register_port_resource(dev, option, port);
 484 }
 485
 486 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 487                                               struct pnp_option *option,
 488                                               struct acpi_resource_memory24 *p)
 489 {
 490         struct pnp_mem *mem;
 491
 492         if (p->address_length == 0)
 493                 return;
 494         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 495         if (!mem)
 496                 return;
 497         mem->min = p->minimum;
 498         mem->max = p->maximum;
 499         mem->align = p->alignment;
 500         mem->size = p->address_length;
 501
 502         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 503             IORESOURCE_MEM_WRITEABLE : 0;
 504
 505         pnp_register_mem_resource(dev, option, mem);
 506 }
 507
 508 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 509                                               struct pnp_option *option,
 510                                               struct acpi_resource_memory32 *p)
 511 {
 512         struct pnp_mem *mem;
 513
 514         if (p->address_length == 0)
 515                 return;
 516         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 517         if (!mem)
 518                 return;
 519         mem->min = p->minimum;
 520         mem->max = p->maximum;
 521         mem->align = p->alignment;
 522         mem->size = p->address_length;
 523
 524         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 525             IORESOURCE_MEM_WRITEABLE : 0;
 526
 527         pnp_register_mem_resource(dev, option, mem);
 528 }
 529
 530 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 531                                                     struct pnp_option *option,
 532                                         struct acpi_resource_fixed_memory32 *p)
 533 {
 534         struct pnp_mem *mem;
 535
 536         if (p->address_length == 0)
 537                 return;
 538         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 539         if (!mem)
 540                 return;
 541         mem->min = mem->max = p->address;
 542         mem->size = p->address_length;
 543         mem->align = 0;
 544
 545         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 546             IORESOURCE_MEM_WRITEABLE : 0;
 547
 548         pnp_register_mem_resource(dev, option, mem);
 549 }
 550
 551 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 552                                                 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(dev, 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(dev, 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(dev, option, &res->data.irq);
 610                 break;
 611
 612         case ACPI_RESOURCE_TYPE_DMA:
 613                 pnpacpi_parse_dma_option(dev, 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                         dev_warn(&dev->dev, "more than one EndDependentFn "
 644                                  "in _PRS\n");
 645                         return AE_ERROR;
 646                 }
 647                 parse_data->option = parse_data->option_independent;
 648                 parse_data->option_independent = NULL;
 649                 dev_dbg(&dev->dev, "end dependent options\n");
 650                 break;
 651
 652         case ACPI_RESOURCE_TYPE_IO:
 653                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 654                 break;
 655
 656         case ACPI_RESOURCE_TYPE_FIXED_IO:
 657                 pnpacpi_parse_fixed_port_option(dev, option,
 658                                                 &res->data.fixed_io);
 659                 break;
 660
 661         case ACPI_RESOURCE_TYPE_VENDOR:
 662         case ACPI_RESOURCE_TYPE_END_TAG:
 663                 break;
 664
 665         case ACPI_RESOURCE_TYPE_MEMORY24:
 666                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 667                 break;
 668
 669         case ACPI_RESOURCE_TYPE_MEMORY32:
 670                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 671                 break;
 672
 673         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 674                 pnpacpi_parse_fixed_mem32_option(dev, option,
 675                                                  &res->data.fixed_memory32);
 676                 break;
 677
 678         case ACPI_RESOURCE_TYPE_ADDRESS16:
 679         case ACPI_RESOURCE_TYPE_ADDRESS32:
 680         case ACPI_RESOURCE_TYPE_ADDRESS64:
 681                 pnpacpi_parse_address_option(dev, option, res);
 682                 break;
 683
 684         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 685                 break;
 686
 687         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 688                 pnpacpi_parse_ext_irq_option(dev, option,
 689                                              &res->data.extended_irq);
 690                 break;
 691
 692         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 693                 break;
 694
 695         default:
 696                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 697                          res->type);
 698                 return AE_ERROR;
 699         }
 700
 701         return AE_OK;
 702 }
 703
 704 acpi_status __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 705 {
 706         acpi_handle handle = dev->data;
 707         acpi_status status;
 708         struct acpipnp_parse_option_s parse_data;
 709
 710         dev_dbg(&dev->dev, "parse resource options\n");
 711
 712         parse_data.option = pnp_register_independent_option(dev);
 713         if (!parse_data.option)
 714                 return AE_ERROR;
 715         parse_data.option_independent = parse_data.option;
 716         parse_data.dev = dev;
 717         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 718                                      pnpacpi_option_resource, &parse_data);
 719
 720         return status;
 721 }
 722
 723 static int pnpacpi_supported_resource(struct acpi_resource *res)
 724 {
 725         switch (res->type) {
 726         case ACPI_RESOURCE_TYPE_IRQ:
 727         case ACPI_RESOURCE_TYPE_DMA:
 728         case ACPI_RESOURCE_TYPE_IO:
 729         case ACPI_RESOURCE_TYPE_FIXED_IO:
 730         case ACPI_RESOURCE_TYPE_MEMORY24:
 731         case ACPI_RESOURCE_TYPE_MEMORY32:
 732         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 733         case ACPI_RESOURCE_TYPE_ADDRESS16:
 734         case ACPI_RESOURCE_TYPE_ADDRESS32:
 735         case ACPI_RESOURCE_TYPE_ADDRESS64:
 736         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 737                 return 1;
 738         }
 739         return 0;
 740 }
 741
 742 /*
 743  * Set resource
 744  */
 745 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 746                                            void *data)
 747 {
 748         int *res_cnt = data;
 749
 750         if (pnpacpi_supported_resource(res))
 751                 (*res_cnt)++;
 752         return AE_OK;
 753 }
 754
 755 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 756 {
 757         struct acpi_resource **resource = data;
 758
 759         if (pnpacpi_supported_resource(res)) {
 760                 (*resource)->type = res->type;
 761                 (*resource)->length = sizeof(struct acpi_resource);
 762                 (*resource)++;
 763         }
 764
 765         return AE_OK;
 766 }
 767
 768 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 769                                     struct acpi_buffer *buffer)
 770 {
 771         acpi_handle handle = dev->data;
 772         struct acpi_resource *resource;
 773         int res_cnt = 0;
 774         acpi_status status;
 775
 776         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 777                                      pnpacpi_count_resources, &res_cnt);
 778         if (ACPI_FAILURE(status)) {
 779                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 780                 return -EINVAL;
 781         }
 782         if (!res_cnt)
 783                 return -EINVAL;
 784         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 785         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 786         if (!buffer->pointer)
 787                 return -ENOMEM;
 788
 789         resource = (struct acpi_resource *)buffer->pointer;
 790         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 791                                      pnpacpi_type_resources, &resource);
 792         if (ACPI_FAILURE(status)) {
 793                 kfree(buffer->pointer);
 794                 dev_err(&dev->dev, "can't evaluate _CRS\n");
 795                 return -EINVAL;
 796         }
 797         /* resource will pointer the end resource now */
 798         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 799
 800         return 0;
 801 }
 802
 803 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 804                                struct acpi_resource *resource,
 805                                struct resource *p)
 806 {
 807         struct acpi_resource_irq *irq = &resource->data.irq;
 808         int triggering, polarity;
 809
 810         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 811         irq->triggering = triggering;
 812         irq->polarity = polarity;
 813         if (triggering == ACPI_EDGE_SENSITIVE)
 814                 irq->sharable = ACPI_EXCLUSIVE;
 815         else
 816                 irq->sharable = ACPI_SHARED;
 817         irq->interrupt_count = 1;
 818         irq->interrupts[0] = p->start;
 819
 820         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 821                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 822                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 823                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 824 }
 825
 826 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 827                                    struct acpi_resource *resource,
 828                                    struct resource *p)
 829 {
 830         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 831         int triggering, polarity;
 832
 833         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 834         extended_irq->producer_consumer = ACPI_CONSUMER;
 835         extended_irq->triggering = triggering;
 836         extended_irq->polarity = polarity;
 837         if (triggering == ACPI_EDGE_SENSITIVE)
 838                 extended_irq->sharable = ACPI_EXCLUSIVE;
 839         else
 840                 extended_irq->sharable = ACPI_SHARED;
 841         extended_irq->interrupt_count = 1;
 842         extended_irq->interrupts[0] = p->start;
 843
 844         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 845                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 846                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 847                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 848 }
 849
 850 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 851                                struct acpi_resource *resource,
 852                                struct resource *p)
 853 {
 854         struct acpi_resource_dma *dma = &resource->data.dma;
 855
 856         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 857         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 858         case IORESOURCE_DMA_TYPEA:
 859                 dma->type = ACPI_TYPE_A;
 860                 break;
 861         case IORESOURCE_DMA_TYPEB:
 862                 dma->type = ACPI_TYPE_B;
 863                 break;
 864         case IORESOURCE_DMA_TYPEF:
 865                 dma->type = ACPI_TYPE_F;
 866                 break;
 867         default:
 868                 dma->type = ACPI_COMPATIBILITY;
 869         }
 870
 871         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 872         case IORESOURCE_DMA_8BIT:
 873                 dma->transfer = ACPI_TRANSFER_8;
 874                 break;
 875         case IORESOURCE_DMA_8AND16BIT:
 876                 dma->transfer = ACPI_TRANSFER_8_16;
 877                 break;
 878         default:
 879                 dma->transfer = ACPI_TRANSFER_16;
 880         }
 881
 882         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 883         dma->channel_count = 1;
 884         dma->channels[0] = p->start;
 885
 886         dev_dbg(&dev->dev, "  encode dma %d "
 887                 "type %#x transfer %#x master %d\n",
 888                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 889 }
 890
 891 static void pnpacpi_encode_io(struct pnp_dev *dev,
 892                               struct acpi_resource *resource,
 893                               struct resource *p)
 894 {
 895         struct acpi_resource_io *io = &resource->data.io;
 896
 897         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 898         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 899             ACPI_DECODE_16 : ACPI_DECODE_10;
 900         io->minimum = p->start;
 901         io->maximum = p->end;
 902         io->alignment = 0;      /* Correct? */
 903         io->address_length = p->end - p->start + 1;
 904
 905         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 906                 (unsigned long long) p->start, (unsigned long long) p->end,
 907                 io->io_decode);
 908 }
 909
 910 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 911                                     struct acpi_resource *resource,
 912                                     struct resource *p)
 913 {
 914         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 915
 916         fixed_io->address = p->start;
 917         fixed_io->address_length = p->end - p->start + 1;
 918
 919         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 920                 (unsigned long long) p->start, (unsigned long long) p->end);
 921 }
 922
 923 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 924                                  struct acpi_resource *resource,
 925                                  struct resource *p)
 926 {
 927         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 928
 929         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 930         memory24->write_protect =
 931             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 932             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 933         memory24->minimum = p->start;
 934         memory24->maximum = p->end;
 935         memory24->alignment = 0;
 936         memory24->address_length = p->end - p->start + 1;
 937
 938         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 939                 (unsigned long long) p->start, (unsigned long long) p->end,
 940                 memory24->write_protect);
 941 }
 942
 943 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 944                                  struct acpi_resource *resource,
 945                                  struct resource *p)
 946 {
 947         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 948
 949         memory32->write_protect =
 950             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 951             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 952         memory32->minimum = p->start;
 953         memory32->maximum = p->end;
 954         memory32->alignment = 0;
 955         memory32->address_length = p->end - p->start + 1;
 956
 957         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 958                 (unsigned long long) p->start, (unsigned long long) p->end,
 959                 memory32->write_protect);
 960 }
 961
 962 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 963                                        struct acpi_resource *resource,
 964                                        struct resource *p)
 965 {
 966         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 967
 968         fixed_memory32->write_protect =
 969             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 970             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 971         fixed_memory32->address = p->start;
 972         fixed_memory32->address_length = p->end - p->start + 1;
 973
 974         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
 975                 "write_protect %#x\n",
 976                 (unsigned long long) p->start, (unsigned long long) p->end,
 977                 fixed_memory32->write_protect);
 978 }
 979
 980 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
 981 {
 982         int i = 0;
 983         /* pnpacpi_build_resource_template allocates extra mem */
 984         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
 985         struct acpi_resource *resource = buffer->pointer;
 986         int port = 0, irq = 0, dma = 0, mem = 0;
 987
 988         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
 989         while (i < res_cnt) {
 990                 switch (resource->type) {
 991                 case ACPI_RESOURCE_TYPE_IRQ:
 992                         pnpacpi_encode_irq(dev, resource,
 993                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
 994                         irq++;
 995                         break;
 996
 997                 case ACPI_RESOURCE_TYPE_DMA:
 998                         pnpacpi_encode_dma(dev, resource,
 999                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1000                         dma++;
1001                         break;
1002                 case ACPI_RESOURCE_TYPE_IO:
1003                         pnpacpi_encode_io(dev, resource,
1004                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1005                         port++;
1006                         break;
1007                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1008                         pnpacpi_encode_fixed_io(dev, resource,
1009                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1010                         port++;
1011                         break;
1012                 case ACPI_RESOURCE_TYPE_MEMORY24:
1013                         pnpacpi_encode_mem24(dev, resource,
1014                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1015                         mem++;
1016                         break;
1017                 case ACPI_RESOURCE_TYPE_MEMORY32:
1018                         pnpacpi_encode_mem32(dev, resource,
1019                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1020                         mem++;
1021                         break;
1022                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1023                         pnpacpi_encode_fixed_mem32(dev, resource,
1024                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1025                         mem++;
1026                         break;
1027                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1028                         pnpacpi_encode_ext_irq(dev, resource,
1029                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1030                         irq++;
1031                         break;
1032                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1033                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1034                 case ACPI_RESOURCE_TYPE_VENDOR:
1035                 case ACPI_RESOURCE_TYPE_END_TAG:
1036                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1037                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1038                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1039                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1040                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1041                 default:        /* other type */
1042                         dev_warn(&dev->dev, "can't encode unknown resource "
1043                                  "type %d\n", resource->type);
1044                         return -EINVAL;
1045                 }
1046                 resource++;
1047                 i++;
1048         }
1049         return 0;
1050 }