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