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