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