git.oblomov.eu Git - linux-2.6/blob - drivers/pnp/pnpacpi/rsparser.c

   1 /*
   2  * pnpacpi -- PnP ACPI driver
   3  *
   4  * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
   5  * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/kernel.h>
  22 #include <linux/acpi.h>
  23 #include <linux/pci.h>
  24 #include "pnpacpi.h"
  25
  26 #ifdef CONFIG_IA64
  27 #define valid_IRQ(i) (1)
  28 #else
  29 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  30 #endif
  31
  32 /*
  33  * Allocated Resources
  34  */
  35 static int irq_flags(int edge_level, int active_high_low)
  36 {
  37         int flag;
  38         if (edge_level == ACPI_LEVEL_SENSITIVE) {
  39                 if(active_high_low == ACPI_ACTIVE_LOW)
  40                         flag = IORESOURCE_IRQ_LOWLEVEL;
  41                 else
  42                         flag = IORESOURCE_IRQ_HIGHLEVEL;
  43         }
  44         else {
  45                 if(active_high_low == ACPI_ACTIVE_LOW)
  46                         flag = IORESOURCE_IRQ_LOWEDGE;
  47                 else
  48                         flag = IORESOURCE_IRQ_HIGHEDGE;
  49         }
  50         return flag;
  51 }
  52
  53 static void decode_irq_flags(int flag, int *edge_level, int *active_high_low)
  54 {
  55         switch (flag) {
  56         case IORESOURCE_IRQ_LOWLEVEL:
  57                 *edge_level = ACPI_LEVEL_SENSITIVE;
  58                 *active_high_low = ACPI_ACTIVE_LOW;
  59                 break;
  60         case IORESOURCE_IRQ_HIGHLEVEL:
  61                 *edge_level = ACPI_LEVEL_SENSITIVE;
  62                 *active_high_low = ACPI_ACTIVE_HIGH;
  63                 break;
  64         case IORESOURCE_IRQ_LOWEDGE:
  65                 *edge_level = ACPI_EDGE_SENSITIVE;
  66                 *active_high_low = ACPI_ACTIVE_LOW;
  67                 break;
  68         case IORESOURCE_IRQ_HIGHEDGE:
  69                 *edge_level = ACPI_EDGE_SENSITIVE;
  70                 *active_high_low = ACPI_ACTIVE_HIGH;
  71                 break;
  72         }
  73 }
  74
  75 static void
  76 pnpacpi_parse_allocated_irqresource(struct pnp_resource_table * res, u32 gsi,
  77         int edge_level, int active_high_low)
  78 {
  79         int i = 0;
  80         int irq;
  81
  82         if (!valid_IRQ(gsi))
  83                 return;
  84
  85         while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
  86                         i < PNP_MAX_IRQ)
  87                 i++;
  88         if (i >= PNP_MAX_IRQ)
  89                 return;
  90
  91         res->irq_resource[i].flags = IORESOURCE_IRQ;  // Also clears _UNSET flag
  92         irq = acpi_register_gsi(gsi, edge_level, active_high_low);
  93         if (irq < 0) {
  94                 res->irq_resource[i].flags |= IORESOURCE_DISABLED;
  95                 return;
  96         }
  97
  98         res->irq_resource[i].start = irq;
  99         res->irq_resource[i].end = irq;
 100         pcibios_penalize_isa_irq(irq, 1);
 101 }
 102
 103 static void
 104 pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table * res, u32 dma)
 105 {
 106         int i = 0;
 107         while (i < PNP_MAX_DMA &&
 108                         !(res->dma_resource[i].flags & IORESOURCE_UNSET))
 109                 i++;
 110         if (i < PNP_MAX_DMA) {
 111                 res->dma_resource[i].flags = IORESOURCE_DMA;  // Also clears _UNSET flag
 112                 if (dma == -1) {
 113                         res->dma_resource[i].flags |= IORESOURCE_DISABLED;
 114                         return;
 115                 }
 116                 res->dma_resource[i].start = dma;
 117                 res->dma_resource[i].end = dma;
 118         }
 119 }
 120
 121 static void
 122 pnpacpi_parse_allocated_ioresource(struct pnp_resource_table * res,
 123         u32 io, u32 len)
 124 {
 125         int i = 0;
 126         while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
 127                         i < PNP_MAX_PORT)
 128                 i++;
 129         if (i < PNP_MAX_PORT) {
 130                 res->port_resource[i].flags = IORESOURCE_IO;  // Also clears _UNSET flag
 131                 if (len <= 0 || (io + len -1) >= 0x10003) {
 132                         res->port_resource[i].flags |= IORESOURCE_DISABLED;
 133                         return;
 134                 }
 135                 res->port_resource[i].start = io;
 136                 res->port_resource[i].end = io + len - 1;
 137         }
 138 }
 139
 140 static void
 141 pnpacpi_parse_allocated_memresource(struct pnp_resource_table * res,
 142         u64 mem, u64 len)
 143 {
 144         int i = 0;
 145         while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
 146                         (i < PNP_MAX_MEM))
 147                 i++;
 148         if (i < PNP_MAX_MEM) {
 149                 res->mem_resource[i].flags = IORESOURCE_MEM;  // Also clears _UNSET flag
 150                 if (len <= 0) {
 151                         res->mem_resource[i].flags |= IORESOURCE_DISABLED;
 152                         return;
 153                 }
 154                 res->mem_resource[i].start = mem;
 155                 res->mem_resource[i].end = mem + len - 1;
 156         }
 157 }
 158
 159
 160 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 161         void *data)
 162 {
 163         struct pnp_resource_table * res_table = (struct pnp_resource_table *)data;
 164         int i;
 165
 166         switch (res->id) {
 167         case ACPI_RSTYPE_IRQ:
 168                 /*
 169                  * Per spec, only one interrupt per descriptor is allowed in
 170                  * _CRS, but some firmware violates this, so parse them all.
 171                  */
 172                 for (i = 0; i < res->data.irq.number_of_interrupts; i++) {
 173                         pnpacpi_parse_allocated_irqresource(res_table,
 174                                 res->data.irq.interrupts[i],
 175                                 res->data.irq.edge_level,
 176                                 res->data.irq.active_high_low);
 177                 }
 178                 break;
 179
 180         case ACPI_RSTYPE_EXT_IRQ:
 181                 for (i = 0; i < res->data.extended_irq.number_of_interrupts; i++) {
 182                         pnpacpi_parse_allocated_irqresource(res_table,
 183                                 res->data.extended_irq.interrupts[i],
 184                                 res->data.extended_irq.edge_level,
 185                                 res->data.extended_irq.active_high_low);
 186                 }
 187                 break;
 188         case ACPI_RSTYPE_DMA:
 189                 if (res->data.dma.number_of_channels > 0)
 190                         pnpacpi_parse_allocated_dmaresource(res_table,
 191                                         res->data.dma.channels[0]);
 192                 break;
 193         case ACPI_RSTYPE_IO:
 194                 pnpacpi_parse_allocated_ioresource(res_table,
 195                                 res->data.io.min_base_address,
 196                                 res->data.io.range_length);
 197                 break;
 198         case ACPI_RSTYPE_FIXED_IO:
 199                 pnpacpi_parse_allocated_ioresource(res_table,
 200                                 res->data.fixed_io.base_address,
 201                                 res->data.fixed_io.range_length);
 202                 break;
 203         case ACPI_RSTYPE_MEM24:
 204                 pnpacpi_parse_allocated_memresource(res_table,
 205                                 res->data.memory24.min_base_address,
 206                                 res->data.memory24.range_length);
 207                 break;
 208         case ACPI_RSTYPE_MEM32:
 209                 pnpacpi_parse_allocated_memresource(res_table,
 210                                 res->data.memory32.min_base_address,
 211                                 res->data.memory32.range_length);
 212                 break;
 213         case ACPI_RSTYPE_FIXED_MEM32:
 214                 pnpacpi_parse_allocated_memresource(res_table,
 215                                 res->data.fixed_memory32.range_base_address,
 216                                 res->data.fixed_memory32.range_length);
 217                 break;
 218         case ACPI_RSTYPE_ADDRESS16:
 219                 pnpacpi_parse_allocated_memresource(res_table,
 220                                 res->data.address16.min_address_range,
 221                                 res->data.address16.address_length);
 222                 break;
 223         case ACPI_RSTYPE_ADDRESS32:
 224                 pnpacpi_parse_allocated_memresource(res_table,
 225                                 res->data.address32.min_address_range,
 226                                 res->data.address32.address_length);
 227                 break;
 228         case ACPI_RSTYPE_ADDRESS64:
 229                 pnpacpi_parse_allocated_memresource(res_table,
 230                 res->data.address64.min_address_range,
 231                 res->data.address64.address_length);
 232                 break;
 233         case ACPI_RSTYPE_VENDOR:
 234                 break;
 235         default:
 236                 pnp_warn("PnPACPI: unknown resource type %d", res->id);
 237                 return AE_ERROR;
 238         }
 239
 240         return AE_OK;
 241 }
 242
 243 acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle, struct pnp_resource_table * res)
 244 {
 245         /* Blank the resource table values */
 246         pnp_init_resource_table(res);
 247
 248         return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res);
 249 }
 250
 251 static void pnpacpi_parse_dma_option(struct pnp_option *option, struct acpi_resource_dma *p)
 252 {
 253         int i;
 254         struct pnp_dma * dma;
 255
 256         if (p->number_of_channels == 0)
 257                 return;
 258         dma = kcalloc(1, sizeof(struct pnp_dma), GFP_KERNEL);
 259         if (!dma)
 260                 return;
 261
 262         for(i = 0; i < p->number_of_channels; i++)
 263                 dma->map |= 1 << p->channels[i];
 264         dma->flags = 0;
 265         if (p->bus_master)
 266                 dma->flags |= IORESOURCE_DMA_MASTER;
 267         switch (p->type) {
 268         case ACPI_COMPATIBILITY:
 269                 dma->flags |= IORESOURCE_DMA_COMPATIBLE;
 270                 break;
 271         case ACPI_TYPE_A:
 272                 dma->flags |= IORESOURCE_DMA_TYPEA;
 273                 break;
 274         case ACPI_TYPE_B:
 275                 dma->flags |= IORESOURCE_DMA_TYPEB;
 276                 break;
 277         case ACPI_TYPE_F:
 278                 dma->flags |= IORESOURCE_DMA_TYPEF;
 279                 break;
 280         default:
 281                 /* Set a default value ? */
 282                 dma->flags |= IORESOURCE_DMA_COMPATIBLE;
 283                 pnp_err("Invalid DMA type");
 284         }
 285         switch (p->transfer) {
 286         case ACPI_TRANSFER_8:
 287                 dma->flags |= IORESOURCE_DMA_8BIT;
 288                 break;
 289         case ACPI_TRANSFER_8_16:
 290                 dma->flags |= IORESOURCE_DMA_8AND16BIT;
 291                 break;
 292         case ACPI_TRANSFER_16:
 293                 dma->flags |= IORESOURCE_DMA_16BIT;
 294                 break;
 295         default:
 296                 /* Set a default value ? */
 297                 dma->flags |= IORESOURCE_DMA_8AND16BIT;
 298                 pnp_err("Invalid DMA transfer type");
 299         }
 300
 301         pnp_register_dma_resource(option,dma);
 302         return;
 303 }
 304
 305
 306 static void pnpacpi_parse_irq_option(struct pnp_option *option,
 307         struct acpi_resource_irq *p)
 308 {
 309         int i;
 310         struct pnp_irq * irq;
 311
 312         if (p->number_of_interrupts == 0)
 313                 return;
 314         irq = kcalloc(1, sizeof(struct pnp_irq), GFP_KERNEL);
 315         if (!irq)
 316                 return;
 317
 318         for(i = 0; i < p->number_of_interrupts; i++)
 319                 if (p->interrupts[i])
 320                         __set_bit(p->interrupts[i], irq->map);
 321         irq->flags = irq_flags(p->edge_level, p->active_high_low);
 322
 323         pnp_register_irq_resource(option, irq);
 324         return;
 325 }
 326
 327 static void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
 328         struct acpi_resource_ext_irq *p)
 329 {
 330         int i;
 331         struct pnp_irq * irq;
 332
 333         if (p->number_of_interrupts == 0)
 334                 return;
 335         irq = kcalloc(1, sizeof(struct pnp_irq), GFP_KERNEL);
 336         if (!irq)
 337                 return;
 338
 339         for(i = 0; i < p->number_of_interrupts; i++)
 340                 if (p->interrupts[i])
 341                         __set_bit(p->interrupts[i], irq->map);
 342         irq->flags = irq_flags(p->edge_level, p->active_high_low);
 343
 344         pnp_register_irq_resource(option, irq);
 345         return;
 346 }
 347
 348 static void
 349 pnpacpi_parse_port_option(struct pnp_option *option,
 350         struct acpi_resource_io *io)
 351 {
 352         struct pnp_port * port;
 353
 354         if (io->range_length == 0)
 355                 return;
 356         port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL);
 357         if (!port)
 358                 return;
 359         port->min = io->min_base_address;
 360         port->max = io->max_base_address;
 361         port->align = io->alignment;
 362         port->size = io->range_length;
 363         port->flags = ACPI_DECODE_16 == io->io_decode ?
 364                 PNP_PORT_FLAG_16BITADDR : 0;
 365         pnp_register_port_resource(option,port);
 366         return;
 367 }
 368
 369 static void
 370 pnpacpi_parse_fixed_port_option(struct pnp_option *option,
 371         struct acpi_resource_fixed_io *io)
 372 {
 373         struct pnp_port * port;
 374
 375         if (io->range_length == 0)
 376                 return;
 377         port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL);
 378         if (!port)
 379                 return;
 380         port->min = port->max = io->base_address;
 381         port->size = io->range_length;
 382         port->align = 0;
 383         port->flags = PNP_PORT_FLAG_FIXED;
 384         pnp_register_port_resource(option,port);
 385         return;
 386 }
 387
 388 static void
 389 pnpacpi_parse_mem24_option(struct pnp_option *option,
 390         struct acpi_resource_mem24 *p)
 391 {
 392         struct pnp_mem * mem;
 393
 394         if (p->range_length == 0)
 395                 return;
 396         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 397         if (!mem)
 398                 return;
 399         mem->min = p->min_base_address;
 400         mem->max = p->max_base_address;
 401         mem->align = p->alignment;
 402         mem->size = p->range_length;
 403
 404         mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
 405                         IORESOURCE_MEM_WRITEABLE : 0;
 406
 407         pnp_register_mem_resource(option,mem);
 408         return;
 409 }
 410
 411 static void
 412 pnpacpi_parse_mem32_option(struct pnp_option *option,
 413         struct acpi_resource_mem32 *p)
 414 {
 415         struct pnp_mem * mem;
 416
 417         if (p->range_length == 0)
 418                 return;
 419         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 420         if (!mem)
 421                 return;
 422         mem->min = p->min_base_address;
 423         mem->max = p->max_base_address;
 424         mem->align = p->alignment;
 425         mem->size = p->range_length;
 426
 427         mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
 428                         IORESOURCE_MEM_WRITEABLE : 0;
 429
 430         pnp_register_mem_resource(option,mem);
 431         return;
 432 }
 433
 434 static void
 435 pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
 436         struct acpi_resource_fixed_mem32 *p)
 437 {
 438         struct pnp_mem * mem;
 439
 440         if (p->range_length == 0)
 441                 return;
 442         mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
 443         if (!mem)
 444                 return;
 445         mem->min = mem->max = p->range_base_address;
 446         mem->size = p->range_length;
 447         mem->align = 0;
 448
 449         mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
 450                         IORESOURCE_MEM_WRITEABLE : 0;
 451
 452         pnp_register_mem_resource(option,mem);
 453         return;
 454 }
 455
 456 struct acpipnp_parse_option_s {
 457         struct pnp_option *option;
 458         struct pnp_option *option_independent;
 459         struct pnp_dev *dev;
 460 };
 461
 462 static acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 463         void *data)
 464 {
 465         int priority = 0;
 466         struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
 467         struct pnp_dev *dev = parse_data->dev;
 468         struct pnp_option *option = parse_data->option;
 469
 470         switch (res->id) {
 471                 case ACPI_RSTYPE_IRQ:
 472                         pnpacpi_parse_irq_option(option, &res->data.irq);
 473                         break;
 474                 case ACPI_RSTYPE_EXT_IRQ:
 475                         pnpacpi_parse_ext_irq_option(option,
 476                                 &res->data.extended_irq);
 477                         break;
 478                 case ACPI_RSTYPE_DMA:
 479                         pnpacpi_parse_dma_option(option, &res->data.dma);
 480                         break;
 481                 case ACPI_RSTYPE_IO:
 482                         pnpacpi_parse_port_option(option, &res->data.io);
 483                         break;
 484                 case ACPI_RSTYPE_FIXED_IO:
 485                         pnpacpi_parse_fixed_port_option(option,
 486                                 &res->data.fixed_io);
 487                         break;
 488                 case ACPI_RSTYPE_MEM24:
 489                         pnpacpi_parse_mem24_option(option, &res->data.memory24);
 490                         break;
 491                 case ACPI_RSTYPE_MEM32:
 492                         pnpacpi_parse_mem32_option(option, &res->data.memory32);
 493                         break;
 494                 case ACPI_RSTYPE_FIXED_MEM32:
 495                         pnpacpi_parse_fixed_mem32_option(option,
 496                                 &res->data.fixed_memory32);
 497                         break;
 498                 case ACPI_RSTYPE_START_DPF:
 499                         switch (res->data.start_dpf.compatibility_priority) {
 500                                 case ACPI_GOOD_CONFIGURATION:
 501                                         priority = PNP_RES_PRIORITY_PREFERRED;
 502                                         break;
 503
 504                                 case ACPI_ACCEPTABLE_CONFIGURATION:
 505                                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 506                                         break;
 507
 508                                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 509                                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 510                                         break;
 511                                 default:
 512                                         priority = PNP_RES_PRIORITY_INVALID;
 513                                         break;
 514                         }
 515                         /* TBD: Considering performace/robustness bits */
 516                         option = pnp_register_dependent_option(dev, priority);
 517                         if (!option)
 518                                 return AE_ERROR;
 519                         parse_data->option = option;
 520                         break;
 521                 case ACPI_RSTYPE_END_DPF:
 522                         /*only one EndDependentFn is allowed*/
 523                         if (!parse_data->option_independent) {
 524                                 pnp_warn("PnPACPI: more than one EndDependentFn");
 525                                 return AE_ERROR;
 526                         }
 527                         parse_data->option = parse_data->option_independent;
 528                         parse_data->option_independent = NULL;
 529                         break;
 530                 default:
 531                         pnp_warn("PnPACPI: unknown resource type %d", res->id);
 532                         return AE_ERROR;
 533         }
 534
 535         return AE_OK;
 536 }
 537
 538 acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle,
 539         struct pnp_dev *dev)
 540 {
 541         acpi_status status;
 542         struct acpipnp_parse_option_s parse_data;
 543
 544         parse_data.option = pnp_register_independent_option(dev);
 545         if (!parse_data.option)
 546                 return AE_ERROR;
 547         parse_data.option_independent = parse_data.option;
 548         parse_data.dev = dev;
 549         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 550                 pnpacpi_option_resource, &parse_data);
 551
 552         return status;
 553 }
 554
 555 /*
 556  * Set resource
 557  */
 558 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 559         void *data)
 560 {
 561         int *res_cnt = (int *)data;
 562         switch (res->id) {
 563         case ACPI_RSTYPE_IRQ:
 564         case ACPI_RSTYPE_EXT_IRQ:
 565         case ACPI_RSTYPE_DMA:
 566         case ACPI_RSTYPE_IO:
 567         case ACPI_RSTYPE_FIXED_IO:
 568         case ACPI_RSTYPE_MEM24:
 569         case ACPI_RSTYPE_MEM32:
 570         case ACPI_RSTYPE_FIXED_MEM32:
 571 #if 0
 572         case ACPI_RSTYPE_ADDRESS16:
 573         case ACPI_RSTYPE_ADDRESS32:
 574         case ACPI_RSTYPE_ADDRESS64:
 575 #endif
 576                 (*res_cnt) ++;
 577         default:
 578                 return AE_OK;
 579         }
 580         return AE_OK;
 581 }
 582
 583 static acpi_status pnpacpi_type_resources(struct acpi_resource *res,
 584         void *data)
 585 {
 586         struct acpi_resource **resource = (struct acpi_resource **)data;
 587         switch (res->id) {
 588         case ACPI_RSTYPE_IRQ:
 589         case ACPI_RSTYPE_EXT_IRQ:
 590         case ACPI_RSTYPE_DMA:
 591         case ACPI_RSTYPE_IO:
 592         case ACPI_RSTYPE_FIXED_IO:
 593         case ACPI_RSTYPE_MEM24:
 594         case ACPI_RSTYPE_MEM32:
 595         case ACPI_RSTYPE_FIXED_MEM32:
 596 #if 0
 597         case ACPI_RSTYPE_ADDRESS16:
 598         case ACPI_RSTYPE_ADDRESS32:
 599         case ACPI_RSTYPE_ADDRESS64:
 600 #endif
 601                 (*resource)->id = res->id;
 602                 (*resource)++;
 603         default:
 604                 return AE_OK;
 605         }
 606
 607         return AE_OK;
 608 }
 609
 610 int pnpacpi_build_resource_template(acpi_handle handle,
 611         struct acpi_buffer *buffer)
 612 {
 613         struct acpi_resource *resource;
 614         int res_cnt = 0;
 615         acpi_status status;
 616
 617         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 618                 pnpacpi_count_resources, &res_cnt);
 619         if (ACPI_FAILURE(status)) {
 620                 pnp_err("Evaluate _CRS failed");
 621                 return -EINVAL;
 622         }
 623         if (!res_cnt)
 624                 return -EINVAL;
 625         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 626         buffer->pointer = kcalloc(1, buffer->length - 1, GFP_KERNEL);
 627         if (!buffer->pointer)
 628                 return -ENOMEM;
 629         pnp_dbg("Res cnt %d", res_cnt);
 630         resource = (struct acpi_resource *)buffer->pointer;
 631         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 632                 pnpacpi_type_resources, &resource);
 633         if (ACPI_FAILURE(status)) {
 634                 kfree(buffer->pointer);
 635                 pnp_err("Evaluate _CRS failed");
 636                 return -EINVAL;
 637         }
 638         /* resource will pointer the end resource now */
 639         resource->id = ACPI_RSTYPE_END_TAG;
 640
 641         return 0;
 642 }
 643
 644 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 645         struct resource *p)
 646 {
 647         int edge_level, active_high_low;
 648
 649         decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level,
 650                 &active_high_low);
 651         resource->id = ACPI_RSTYPE_IRQ;
 652         resource->length = sizeof(struct acpi_resource);
 653         resource->data.irq.edge_level = edge_level;
 654         resource->data.irq.active_high_low = active_high_low;
 655         if (edge_level == ACPI_EDGE_SENSITIVE)
 656                 resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
 657         else
 658                 resource->data.irq.shared_exclusive = ACPI_SHARED;
 659         resource->data.irq.number_of_interrupts = 1;
 660         resource->data.irq.interrupts[0] = p->start;
 661 }
 662
 663 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 664         struct resource *p)
 665 {
 666         int edge_level, active_high_low;
 667
 668         decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level,
 669                 &active_high_low);
 670         resource->id = ACPI_RSTYPE_EXT_IRQ;
 671         resource->length = sizeof(struct acpi_resource);
 672         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 673         resource->data.extended_irq.edge_level = edge_level;
 674         resource->data.extended_irq.active_high_low = active_high_low;
 675         if (edge_level == ACPI_EDGE_SENSITIVE)
 676                 resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
 677         else
 678                 resource->data.irq.shared_exclusive = ACPI_SHARED;
 679         resource->data.extended_irq.number_of_interrupts = 1;
 680         resource->data.extended_irq.interrupts[0] = p->start;
 681 }
 682
 683 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 684         struct resource *p)
 685 {
 686         resource->id = ACPI_RSTYPE_DMA;
 687         resource->length = sizeof(struct acpi_resource);
 688         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 689         if (p->flags & IORESOURCE_DMA_COMPATIBLE)
 690                 resource->data.dma.type = ACPI_COMPATIBILITY;
 691         else if (p->flags & IORESOURCE_DMA_TYPEA)
 692                 resource->data.dma.type = ACPI_TYPE_A;
 693         else if (p->flags & IORESOURCE_DMA_TYPEB)
 694                 resource->data.dma.type = ACPI_TYPE_B;
 695         else if (p->flags & IORESOURCE_DMA_TYPEF)
 696                 resource->data.dma.type = ACPI_TYPE_F;
 697         if (p->flags & IORESOURCE_DMA_8BIT)
 698                 resource->data.dma.transfer = ACPI_TRANSFER_8;
 699         else if (p->flags & IORESOURCE_DMA_8AND16BIT)
 700                 resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 701         else if (p->flags & IORESOURCE_DMA_16BIT)
 702                 resource->data.dma.transfer = ACPI_TRANSFER_16;
 703         resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER;
 704         resource->data.dma.number_of_channels = 1;
 705         resource->data.dma.channels[0] = p->start;
 706 }
 707
 708 static void pnpacpi_encode_io(struct acpi_resource *resource,
 709         struct resource *p)
 710 {
 711         resource->id = ACPI_RSTYPE_IO;
 712         resource->length = sizeof(struct acpi_resource);
 713         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 714         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
 715                 ACPI_DECODE_16 : ACPI_DECODE_10;
 716         resource->data.io.min_base_address = p->start;
 717         resource->data.io.max_base_address = p->end;
 718         resource->data.io.alignment = 0; /* Correct? */
 719         resource->data.io.range_length = p->end - p->start + 1;
 720 }
 721
 722 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 723         struct resource *p)
 724 {
 725         resource->id = ACPI_RSTYPE_FIXED_IO;
 726         resource->length = sizeof(struct acpi_resource);
 727         resource->data.fixed_io.base_address = p->start;
 728         resource->data.fixed_io.range_length = p->end - p->start + 1;
 729 }
 730
 731 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 732         struct resource *p)
 733 {
 734         resource->id = ACPI_RSTYPE_MEM24;
 735         resource->length = sizeof(struct acpi_resource);
 736         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 737         resource->data.memory24.read_write_attribute =
 738                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 739                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 740         resource->data.memory24.min_base_address = p->start;
 741         resource->data.memory24.max_base_address = p->end;
 742         resource->data.memory24.alignment = 0;
 743         resource->data.memory24.range_length = p->end - p->start + 1;
 744 }
 745
 746 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 747         struct resource *p)
 748 {
 749         resource->id = ACPI_RSTYPE_MEM32;
 750         resource->length = sizeof(struct acpi_resource);
 751         resource->data.memory32.read_write_attribute =
 752                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 753                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 754         resource->data.memory32.min_base_address = p->start;
 755         resource->data.memory32.max_base_address = p->end;
 756         resource->data.memory32.alignment = 0;
 757         resource->data.memory32.range_length = p->end - p->start + 1;
 758 }
 759
 760 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 761         struct resource *p)
 762 {
 763         resource->id = ACPI_RSTYPE_FIXED_MEM32;
 764         resource->length = sizeof(struct acpi_resource);
 765         resource->data.fixed_memory32.read_write_attribute =
 766                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 767                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 768         resource->data.fixed_memory32.range_base_address = p->start;
 769         resource->data.fixed_memory32.range_length = p->end - p->start + 1;
 770 }
 771
 772 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 773         struct acpi_buffer *buffer)
 774 {
 775         int i = 0;
 776         /* pnpacpi_build_resource_template allocates extra mem */
 777         int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
 778         struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
 779         int port = 0, irq = 0, dma = 0, mem = 0;
 780
 781         pnp_dbg("res cnt %d", res_cnt);
 782         while (i < res_cnt) {
 783                 switch(resource->id) {
 784                 case ACPI_RSTYPE_IRQ:
 785                         pnp_dbg("Encode irq");
 786                         pnpacpi_encode_irq(resource,
 787                                 &res_table->irq_resource[irq]);
 788                         irq++;
 789                         break;
 790
 791                 case ACPI_RSTYPE_EXT_IRQ:
 792                         pnp_dbg("Encode ext irq");
 793                         pnpacpi_encode_ext_irq(resource,
 794                                 &res_table->irq_resource[irq]);
 795                         irq++;
 796                         break;
 797                 case ACPI_RSTYPE_DMA:
 798                         pnp_dbg("Encode dma");
 799                         pnpacpi_encode_dma(resource,
 800                                 &res_table->dma_resource[dma]);
 801                         dma ++;
 802                         break;
 803                 case ACPI_RSTYPE_IO:
 804                         pnp_dbg("Encode io");
 805                         pnpacpi_encode_io(resource,
 806                                 &res_table->port_resource[port]);
 807                         port ++;
 808                         break;
 809                 case ACPI_RSTYPE_FIXED_IO:
 810                         pnp_dbg("Encode fixed io");
 811                         pnpacpi_encode_fixed_io(resource,
 812                                 &res_table->port_resource[port]);
 813                         port ++;
 814                         break;
 815                 case ACPI_RSTYPE_MEM24:
 816                         pnp_dbg("Encode mem24");
 817                         pnpacpi_encode_mem24(resource,
 818                                 &res_table->mem_resource[mem]);
 819                         mem ++;
 820                         break;
 821                 case ACPI_RSTYPE_MEM32:
 822                         pnp_dbg("Encode mem32");
 823                         pnpacpi_encode_mem32(resource,
 824                                 &res_table->mem_resource[mem]);
 825                         mem ++;
 826                         break;
 827                 case ACPI_RSTYPE_FIXED_MEM32:
 828                         pnp_dbg("Encode fixed mem32");
 829                         pnpacpi_encode_fixed_mem32(resource,
 830                                 &res_table->mem_resource[mem]);
 831                         mem ++;
 832                         break;
 833                 default: /* other type */
 834                         pnp_warn("unknown resource type %d", resource->id);
 835                         return -EINVAL;
 836                 }
 837                 resource ++;
 838                 i ++;
 839         }
 840         return 0;
 841 }