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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 "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                         pnp_warn("IRQ %d override to %s, %s",
 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                 pnp_warn("PnPACPI: failed to convert resource type %d",
 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                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 401                 return AE_ERROR;
 402         }
 403
 404         return AE_OK;
 405 }
 406
 407 acpi_status pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 408 {
 409         acpi_handle handle = dev->data;
 410
 411         dev_dbg(&dev->dev, "parse allocated resources\n");
 412
 413         pnp_init_resources(dev);
 414
 415         return acpi_walk_resources(handle, METHOD_NAME__CRS,
 416                                    pnpacpi_allocated_resource, dev);
 417 }
 418
 419 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 420                                             struct pnp_option *option,
 421                                             struct acpi_resource_dma *p)
 422 {
 423         int i;
 424         struct pnp_dma *dma;
 425
 426         if (p->channel_count == 0)
 427                 return;
 428         dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL);
 429         if (!dma)
 430                 return;
 431
 432         for (i = 0; i < p->channel_count; i++)
 433                 dma->map |= 1 << p->channels[i];
 434
 435         dma->flags = dma_flags(p->type, p->bus_master, p->transfer);
 436
 437         pnp_register_dma_resource(dev, option, dma);
 438 }
 439
 440 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 441                                             struct pnp_option *option,
 442                                             struct acpi_resource_irq *p)
 443 {
 444         int i;
 445         struct pnp_irq *irq;
 446
 447         if (p->interrupt_count == 0)
 448                 return;
 449         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 450         if (!irq)
 451                 return;
 452
 453         for (i = 0; i < p->interrupt_count; i++)
 454                 if (p->interrupts[i])
 455                         __set_bit(p->interrupts[i], irq->map);
 456         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 457
 458         pnp_register_irq_resource(dev, option, irq);
 459 }
 460
 461 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 462                                                 struct pnp_option *option,
 463                                         struct acpi_resource_extended_irq *p)
 464 {
 465         int i;
 466         struct pnp_irq *irq;
 467
 468         if (p->interrupt_count == 0)
 469                 return;
 470         irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL);
 471         if (!irq)
 472                 return;
 473
 474         for (i = 0; i < p->interrupt_count; i++)
 475                 if (p->interrupts[i])
 476                         __set_bit(p->interrupts[i], irq->map);
 477         irq->flags = irq_flags(p->triggering, p->polarity, p->sharable);
 478
 479         pnp_register_irq_resource(dev, option, irq);
 480 }
 481
 482 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 483                                              struct pnp_option *option,
 484                                              struct acpi_resource_io *io)
 485 {
 486         struct pnp_port *port;
 487
 488         if (io->address_length == 0)
 489                 return;
 490         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 491         if (!port)
 492                 return;
 493         port->min = io->minimum;
 494         port->max = io->maximum;
 495         port->align = io->alignment;
 496         port->size = io->address_length;
 497         port->flags = ACPI_DECODE_16 == io->io_decode ?
 498             PNP_PORT_FLAG_16BITADDR : 0;
 499         pnp_register_port_resource(dev, option, port);
 500 }
 501
 502 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 503                                                    struct pnp_option *option,
 504                                         struct acpi_resource_fixed_io *io)
 505 {
 506         struct pnp_port *port;
 507
 508         if (io->address_length == 0)
 509                 return;
 510         port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 511         if (!port)
 512                 return;
 513         port->min = port->max = io->address;
 514         port->size = io->address_length;
 515         port->align = 0;
 516         port->flags = PNP_PORT_FLAG_FIXED;
 517         pnp_register_port_resource(dev, option, port);
 518 }
 519
 520 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 521                                               struct pnp_option *option,
 522                                               struct acpi_resource_memory24 *p)
 523 {
 524         struct pnp_mem *mem;
 525
 526         if (p->address_length == 0)
 527                 return;
 528         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 529         if (!mem)
 530                 return;
 531         mem->min = p->minimum;
 532         mem->max = p->maximum;
 533         mem->align = p->alignment;
 534         mem->size = p->address_length;
 535
 536         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 537             IORESOURCE_MEM_WRITEABLE : 0;
 538
 539         pnp_register_mem_resource(dev, option, mem);
 540 }
 541
 542 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 543                                               struct pnp_option *option,
 544                                               struct acpi_resource_memory32 *p)
 545 {
 546         struct pnp_mem *mem;
 547
 548         if (p->address_length == 0)
 549                 return;
 550         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 551         if (!mem)
 552                 return;
 553         mem->min = p->minimum;
 554         mem->max = p->maximum;
 555         mem->align = p->alignment;
 556         mem->size = p->address_length;
 557
 558         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 559             IORESOURCE_MEM_WRITEABLE : 0;
 560
 561         pnp_register_mem_resource(dev, option, mem);
 562 }
 563
 564 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 565                                                     struct pnp_option *option,
 566                                         struct acpi_resource_fixed_memory32 *p)
 567 {
 568         struct pnp_mem *mem;
 569
 570         if (p->address_length == 0)
 571                 return;
 572         mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 573         if (!mem)
 574                 return;
 575         mem->min = mem->max = p->address;
 576         mem->size = p->address_length;
 577         mem->align = 0;
 578
 579         mem->flags = (ACPI_READ_WRITE_MEMORY == p->write_protect) ?
 580             IORESOURCE_MEM_WRITEABLE : 0;
 581
 582         pnp_register_mem_resource(dev, option, mem);
 583 }
 584
 585 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 586                                                 struct pnp_option *option,
 587                                                 struct acpi_resource *r)
 588 {
 589         struct acpi_resource_address64 addr, *p = &addr;
 590         acpi_status status;
 591         struct pnp_mem *mem;
 592         struct pnp_port *port;
 593
 594         status = acpi_resource_to_address64(r, p);
 595         if (!ACPI_SUCCESS(status)) {
 596                 pnp_warn("PnPACPI: failed to convert resource type %d",
 597                          r->type);
 598                 return;
 599         }
 600
 601         if (p->address_length == 0)
 602                 return;
 603
 604         if (p->resource_type == ACPI_MEMORY_RANGE) {
 605                 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL);
 606                 if (!mem)
 607                         return;
 608                 mem->min = mem->max = p->minimum;
 609                 mem->size = p->address_length;
 610                 mem->align = 0;
 611                 mem->flags = (p->info.mem.write_protect ==
 612                               ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE
 613                     : 0;
 614                 pnp_register_mem_resource(dev, option, mem);
 615         } else if (p->resource_type == ACPI_IO_RANGE) {
 616                 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL);
 617                 if (!port)
 618                         return;
 619                 port->min = port->max = p->minimum;
 620                 port->size = p->address_length;
 621                 port->align = 0;
 622                 port->flags = PNP_PORT_FLAG_FIXED;
 623                 pnp_register_port_resource(dev, option, port);
 624         }
 625 }
 626
 627 struct acpipnp_parse_option_s {
 628         struct pnp_option *option;
 629         struct pnp_option *option_independent;
 630         struct pnp_dev *dev;
 631 };
 632
 633 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 634                                                   void *data)
 635 {
 636         int priority = 0;
 637         struct acpipnp_parse_option_s *parse_data = data;
 638         struct pnp_dev *dev = parse_data->dev;
 639         struct pnp_option *option = parse_data->option;
 640
 641         switch (res->type) {
 642         case ACPI_RESOURCE_TYPE_IRQ:
 643                 pnpacpi_parse_irq_option(dev, option, &res->data.irq);
 644                 break;
 645
 646         case ACPI_RESOURCE_TYPE_DMA:
 647                 pnpacpi_parse_dma_option(dev, option, &res->data.dma);
 648                 break;
 649
 650         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 651                 switch (res->data.start_dpf.compatibility_priority) {
 652                 case ACPI_GOOD_CONFIGURATION:
 653                         priority = PNP_RES_PRIORITY_PREFERRED;
 654                         break;
 655
 656                 case ACPI_ACCEPTABLE_CONFIGURATION:
 657                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 658                         break;
 659
 660                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 661                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 662                         break;
 663                 default:
 664                         priority = PNP_RES_PRIORITY_INVALID;
 665                         break;
 666                 }
 667                 /* TBD: Consider performance/robustness bits */
 668                 option = pnp_register_dependent_option(dev, priority);
 669                 if (!option)
 670                         return AE_ERROR;
 671                 parse_data->option = option;
 672                 break;
 673
 674         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 675                 /*only one EndDependentFn is allowed */
 676                 if (!parse_data->option_independent) {
 677                         pnp_warn("PnPACPI: more than one EndDependentFn");
 678                         return AE_ERROR;
 679                 }
 680                 parse_data->option = parse_data->option_independent;
 681                 parse_data->option_independent = NULL;
 682                 dev_dbg(&dev->dev, "end dependent options\n");
 683                 break;
 684
 685         case ACPI_RESOURCE_TYPE_IO:
 686                 pnpacpi_parse_port_option(dev, option, &res->data.io);
 687                 break;
 688
 689         case ACPI_RESOURCE_TYPE_FIXED_IO:
 690                 pnpacpi_parse_fixed_port_option(dev, option,
 691                                                 &res->data.fixed_io);
 692                 break;
 693
 694         case ACPI_RESOURCE_TYPE_VENDOR:
 695         case ACPI_RESOURCE_TYPE_END_TAG:
 696                 break;
 697
 698         case ACPI_RESOURCE_TYPE_MEMORY24:
 699                 pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
 700                 break;
 701
 702         case ACPI_RESOURCE_TYPE_MEMORY32:
 703                 pnpacpi_parse_mem32_option(dev, option, &res->data.memory32);
 704                 break;
 705
 706         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 707                 pnpacpi_parse_fixed_mem32_option(dev, option,
 708                                                  &res->data.fixed_memory32);
 709                 break;
 710
 711         case ACPI_RESOURCE_TYPE_ADDRESS16:
 712         case ACPI_RESOURCE_TYPE_ADDRESS32:
 713         case ACPI_RESOURCE_TYPE_ADDRESS64:
 714                 pnpacpi_parse_address_option(dev, option, res);
 715                 break;
 716
 717         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 718                 break;
 719
 720         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 721                 pnpacpi_parse_ext_irq_option(dev, option,
 722                                              &res->data.extended_irq);
 723                 break;
 724
 725         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 726                 break;
 727
 728         default:
 729                 pnp_warn("PnPACPI: unknown resource type %d", res->type);
 730                 return AE_ERROR;
 731         }
 732
 733         return AE_OK;
 734 }
 735
 736 acpi_status __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 737 {
 738         acpi_handle handle = dev->data;
 739         acpi_status status;
 740         struct acpipnp_parse_option_s parse_data;
 741
 742         dev_dbg(&dev->dev, "parse resource options\n");
 743
 744         parse_data.option = pnp_register_independent_option(dev);
 745         if (!parse_data.option)
 746                 return AE_ERROR;
 747         parse_data.option_independent = parse_data.option;
 748         parse_data.dev = dev;
 749         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 750                                      pnpacpi_option_resource, &parse_data);
 751
 752         return status;
 753 }
 754
 755 static int pnpacpi_supported_resource(struct acpi_resource *res)
 756 {
 757         switch (res->type) {
 758         case ACPI_RESOURCE_TYPE_IRQ:
 759         case ACPI_RESOURCE_TYPE_DMA:
 760         case ACPI_RESOURCE_TYPE_IO:
 761         case ACPI_RESOURCE_TYPE_FIXED_IO:
 762         case ACPI_RESOURCE_TYPE_MEMORY24:
 763         case ACPI_RESOURCE_TYPE_MEMORY32:
 764         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 765         case ACPI_RESOURCE_TYPE_ADDRESS16:
 766         case ACPI_RESOURCE_TYPE_ADDRESS32:
 767         case ACPI_RESOURCE_TYPE_ADDRESS64:
 768         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 769                 return 1;
 770         }
 771         return 0;
 772 }
 773
 774 /*
 775  * Set resource
 776  */
 777 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 778                                            void *data)
 779 {
 780         int *res_cnt = data;
 781
 782         if (pnpacpi_supported_resource(res))
 783                 (*res_cnt)++;
 784         return AE_OK;
 785 }
 786
 787 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 788 {
 789         struct acpi_resource **resource = data;
 790
 791         if (pnpacpi_supported_resource(res)) {
 792                 (*resource)->type = res->type;
 793                 (*resource)->length = sizeof(struct acpi_resource);
 794                 (*resource)++;
 795         }
 796
 797         return AE_OK;
 798 }
 799
 800 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 801                                     struct acpi_buffer *buffer)
 802 {
 803         acpi_handle handle = dev->data;
 804         struct acpi_resource *resource;
 805         int res_cnt = 0;
 806         acpi_status status;
 807
 808         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 809                                      pnpacpi_count_resources, &res_cnt);
 810         if (ACPI_FAILURE(status)) {
 811                 pnp_err("Evaluate _CRS failed");
 812                 return -EINVAL;
 813         }
 814         if (!res_cnt)
 815                 return -EINVAL;
 816         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 817         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 818         if (!buffer->pointer)
 819                 return -ENOMEM;
 820
 821         resource = (struct acpi_resource *)buffer->pointer;
 822         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 823                                      pnpacpi_type_resources, &resource);
 824         if (ACPI_FAILURE(status)) {
 825                 kfree(buffer->pointer);
 826                 pnp_err("Evaluate _CRS failed");
 827                 return -EINVAL;
 828         }
 829         /* resource will pointer the end resource now */
 830         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 831
 832         return 0;
 833 }
 834
 835 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 836                                struct acpi_resource *resource,
 837                                struct resource *p)
 838 {
 839         struct acpi_resource_irq *irq = &resource->data.irq;
 840         int triggering, polarity;
 841
 842         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 843         irq->triggering = triggering;
 844         irq->polarity = polarity;
 845         if (triggering == ACPI_EDGE_SENSITIVE)
 846                 irq->sharable = ACPI_EXCLUSIVE;
 847         else
 848                 irq->sharable = ACPI_SHARED;
 849         irq->interrupt_count = 1;
 850         irq->interrupts[0] = p->start;
 851
 852         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 853                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 854                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 855                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 856 }
 857
 858 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 859                                    struct acpi_resource *resource,
 860                                    struct resource *p)
 861 {
 862         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 863         int triggering, polarity;
 864
 865         decode_irq_flags(p->flags & IORESOURCE_BITS, &triggering, &polarity);
 866         extended_irq->producer_consumer = ACPI_CONSUMER;
 867         extended_irq->triggering = triggering;
 868         extended_irq->polarity = polarity;
 869         if (triggering == ACPI_EDGE_SENSITIVE)
 870                 extended_irq->sharable = ACPI_EXCLUSIVE;
 871         else
 872                 extended_irq->sharable = ACPI_SHARED;
 873         extended_irq->interrupt_count = 1;
 874         extended_irq->interrupts[0] = p->start;
 875
 876         dev_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 877                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 878                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 879                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 880 }
 881
 882 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 883                                struct acpi_resource *resource,
 884                                struct resource *p)
 885 {
 886         struct acpi_resource_dma *dma = &resource->data.dma;
 887
 888         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 889         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 890         case IORESOURCE_DMA_TYPEA:
 891                 dma->type = ACPI_TYPE_A;
 892                 break;
 893         case IORESOURCE_DMA_TYPEB:
 894                 dma->type = ACPI_TYPE_B;
 895                 break;
 896         case IORESOURCE_DMA_TYPEF:
 897                 dma->type = ACPI_TYPE_F;
 898                 break;
 899         default:
 900                 dma->type = ACPI_COMPATIBILITY;
 901         }
 902
 903         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 904         case IORESOURCE_DMA_8BIT:
 905                 dma->transfer = ACPI_TRANSFER_8;
 906                 break;
 907         case IORESOURCE_DMA_8AND16BIT:
 908                 dma->transfer = ACPI_TRANSFER_8_16;
 909                 break;
 910         default:
 911                 dma->transfer = ACPI_TRANSFER_16;
 912         }
 913
 914         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 915         dma->channel_count = 1;
 916         dma->channels[0] = p->start;
 917
 918         dev_dbg(&dev->dev, "  encode dma %d "
 919                 "type %#x transfer %#x master %d\n",
 920                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 921 }
 922
 923 static void pnpacpi_encode_io(struct pnp_dev *dev,
 924                               struct acpi_resource *resource,
 925                               struct resource *p)
 926 {
 927         struct acpi_resource_io *io = &resource->data.io;
 928
 929         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 930         io->io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR) ?
 931             ACPI_DECODE_16 : ACPI_DECODE_10;
 932         io->minimum = p->start;
 933         io->maximum = p->end;
 934         io->alignment = 0;      /* Correct? */
 935         io->address_length = p->end - p->start + 1;
 936
 937         dev_dbg(&dev->dev, "  encode io %#llx-%#llx decode %#x\n",
 938                 (unsigned long long) p->start, (unsigned long long) p->end,
 939                 io->io_decode);
 940 }
 941
 942 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
 943                                     struct acpi_resource *resource,
 944                                     struct resource *p)
 945 {
 946         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
 947
 948         fixed_io->address = p->start;
 949         fixed_io->address_length = p->end - p->start + 1;
 950
 951         dev_dbg(&dev->dev, "  encode fixed_io %#llx-%#llx\n",
 952                 (unsigned long long) p->start, (unsigned long long) p->end);
 953 }
 954
 955 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
 956                                  struct acpi_resource *resource,
 957                                  struct resource *p)
 958 {
 959         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
 960
 961         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 962         memory24->write_protect =
 963             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 964             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 965         memory24->minimum = p->start;
 966         memory24->maximum = p->end;
 967         memory24->alignment = 0;
 968         memory24->address_length = p->end - p->start + 1;
 969
 970         dev_dbg(&dev->dev, "  encode mem24 %#llx-%#llx write_protect %#x\n",
 971                 (unsigned long long) p->start, (unsigned long long) p->end,
 972                 memory24->write_protect);
 973 }
 974
 975 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
 976                                  struct acpi_resource *resource,
 977                                  struct resource *p)
 978 {
 979         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
 980
 981         memory32->write_protect =
 982             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 983             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 984         memory32->minimum = p->start;
 985         memory32->maximum = p->end;
 986         memory32->alignment = 0;
 987         memory32->address_length = p->end - p->start + 1;
 988
 989         dev_dbg(&dev->dev, "  encode mem32 %#llx-%#llx write_protect %#x\n",
 990                 (unsigned long long) p->start, (unsigned long long) p->end,
 991                 memory32->write_protect);
 992 }
 993
 994 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
 995                                        struct acpi_resource *resource,
 996                                        struct resource *p)
 997 {
 998         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
 999
1000         fixed_memory32->write_protect =
1001             (p->flags & IORESOURCE_MEM_WRITEABLE) ?
1002             ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1003         fixed_memory32->address = p->start;
1004         fixed_memory32->address_length = p->end - p->start + 1;
1005
1006         dev_dbg(&dev->dev, "  encode fixed_mem32 %#llx-%#llx "
1007                 "write_protect %#x\n",
1008                 (unsigned long long) p->start, (unsigned long long) p->end,
1009                 fixed_memory32->write_protect);
1010 }
1011
1012 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1013 {
1014         struct pnp_resource_table *res_table = &dev->res;
1015         int i = 0;
1016         /* pnpacpi_build_resource_template allocates extra mem */
1017         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1018         struct acpi_resource *resource = buffer->pointer;
1019         int port = 0, irq = 0, dma = 0, mem = 0;
1020
1021         dev_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1022         while (i < res_cnt) {
1023                 switch (resource->type) {
1024                 case ACPI_RESOURCE_TYPE_IRQ:
1025                         pnpacpi_encode_irq(dev, resource,
1026                                            &res_table->irq_resource[irq]);
1027                         irq++;
1028                         break;
1029
1030                 case ACPI_RESOURCE_TYPE_DMA:
1031                         pnpacpi_encode_dma(dev, resource,
1032                                            &res_table->dma_resource[dma]);
1033                         dma++;
1034                         break;
1035                 case ACPI_RESOURCE_TYPE_IO:
1036                         pnpacpi_encode_io(dev, resource,
1037                                           &res_table->port_resource[port]);
1038                         port++;
1039                         break;
1040                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1041                         pnpacpi_encode_fixed_io(dev, resource,
1042                                                 &res_table->
1043                                                 port_resource[port]);
1044                         port++;
1045                         break;
1046                 case ACPI_RESOURCE_TYPE_MEMORY24:
1047                         pnpacpi_encode_mem24(dev, resource,
1048                                              &res_table->mem_resource[mem]);
1049                         mem++;
1050                         break;
1051                 case ACPI_RESOURCE_TYPE_MEMORY32:
1052                         pnpacpi_encode_mem32(dev, resource,
1053                                              &res_table->mem_resource[mem]);
1054                         mem++;
1055                         break;
1056                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1057                         pnpacpi_encode_fixed_mem32(dev, resource,
1058                                                    &res_table->
1059                                                    mem_resource[mem]);
1060                         mem++;
1061                         break;
1062                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1063                         pnpacpi_encode_ext_irq(dev, resource,
1064                                                &res_table->irq_resource[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                         pnp_warn("unknown resource type %d", resource->type);
1078                         return -EINVAL;
1079                 }
1080                 resource++;
1081                 i++;
1082         }
1083         return 0;
1084 }