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 (!(res->dma_resource[i].flags & IORESOURCE_UNSET) &&
  98                         i < PNP_MAX_DMA)
  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]);
 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]);
 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_dev *dev;
 448 };
 449
 450 static acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 451         void *data)
 452 {
 453         int priority = 0;
 454         struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
 455         struct pnp_dev *dev = parse_data->dev;
 456         struct pnp_option *option = parse_data->option;
 457
 458         switch (res->id) {
 459                 case ACPI_RSTYPE_IRQ:
 460                         pnpacpi_parse_irq_option(option, &res->data.irq);
 461                         break;
 462                 case ACPI_RSTYPE_EXT_IRQ:
 463                         pnpacpi_parse_ext_irq_option(option,
 464                                 &res->data.extended_irq);
 465                         break;
 466                 case ACPI_RSTYPE_DMA:
 467                         pnpacpi_parse_dma_option(option, &res->data.dma);
 468                         break;
 469                 case ACPI_RSTYPE_IO:
 470                         pnpacpi_parse_port_option(option, &res->data.io);
 471                         break;
 472                 case ACPI_RSTYPE_FIXED_IO:
 473                         pnpacpi_parse_fixed_port_option(option,
 474                                 &res->data.fixed_io);
 475                         break;
 476                 case ACPI_RSTYPE_MEM24:
 477                         pnpacpi_parse_mem24_option(option, &res->data.memory24);
 478                         break;
 479                 case ACPI_RSTYPE_MEM32:
 480                         pnpacpi_parse_mem32_option(option, &res->data.memory32);
 481                         break;
 482                 case ACPI_RSTYPE_FIXED_MEM32:
 483                         pnpacpi_parse_fixed_mem32_option(option,
 484                                 &res->data.fixed_memory32);
 485                         break;
 486                 case ACPI_RSTYPE_START_DPF:
 487                         switch (res->data.start_dpf.compatibility_priority) {
 488                                 case ACPI_GOOD_CONFIGURATION:
 489                                         priority = PNP_RES_PRIORITY_PREFERRED;
 490                                         break;
 491
 492                                 case ACPI_ACCEPTABLE_CONFIGURATION:
 493                                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 494                                         break;
 495
 496                                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 497                                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 498                                         break;
 499                                 default:
 500                                         priority = PNP_RES_PRIORITY_INVALID;
 501                                         break;
 502                         }
 503                         /* TBD: Considering performace/robustness bits */
 504                         option = pnp_register_dependent_option(dev, priority);
 505                         if (!option)
 506                                 return AE_ERROR;
 507                         parse_data->option = option;
 508                         break;
 509                 case ACPI_RSTYPE_END_DPF:
 510                         return AE_CTRL_TERMINATE;
 511                 default:
 512                         pnp_warn("PnPACPI: unknown resource type %d", res->id);
 513                         return AE_ERROR;
 514         }
 515
 516         return AE_OK;
 517 }
 518
 519 acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle,
 520         struct pnp_dev *dev)
 521 {
 522         acpi_status status;
 523         struct acpipnp_parse_option_s parse_data;
 524
 525         parse_data.option = pnp_register_independent_option(dev);
 526         if (!parse_data.option)
 527                 return AE_ERROR;
 528         parse_data.dev = dev;
 529         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 530                 pnpacpi_option_resource, &parse_data);
 531
 532         return status;
 533 }
 534
 535 /*
 536  * Set resource
 537  */
 538 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 539         void *data)
 540 {
 541         int *res_cnt = (int *)data;
 542         switch (res->id) {
 543         case ACPI_RSTYPE_IRQ:
 544         case ACPI_RSTYPE_EXT_IRQ:
 545         case ACPI_RSTYPE_DMA:
 546         case ACPI_RSTYPE_IO:
 547         case ACPI_RSTYPE_FIXED_IO:
 548         case ACPI_RSTYPE_MEM24:
 549         case ACPI_RSTYPE_MEM32:
 550         case ACPI_RSTYPE_FIXED_MEM32:
 551 #if 0
 552         case ACPI_RSTYPE_ADDRESS16:
 553         case ACPI_RSTYPE_ADDRESS32:
 554         case ACPI_RSTYPE_ADDRESS64:
 555 #endif
 556                 (*res_cnt) ++;
 557         default:
 558                 return AE_OK;
 559         }
 560         return AE_OK;
 561 }
 562
 563 static acpi_status pnpacpi_type_resources(struct acpi_resource *res,
 564         void *data)
 565 {
 566         struct acpi_resource **resource = (struct acpi_resource **)data;
 567         switch (res->id) {
 568         case ACPI_RSTYPE_IRQ:
 569         case ACPI_RSTYPE_EXT_IRQ:
 570         case ACPI_RSTYPE_DMA:
 571         case ACPI_RSTYPE_IO:
 572         case ACPI_RSTYPE_FIXED_IO:
 573         case ACPI_RSTYPE_MEM24:
 574         case ACPI_RSTYPE_MEM32:
 575         case ACPI_RSTYPE_FIXED_MEM32:
 576 #if 0
 577         case ACPI_RSTYPE_ADDRESS16:
 578         case ACPI_RSTYPE_ADDRESS32:
 579         case ACPI_RSTYPE_ADDRESS64:
 580 #endif
 581                 (*resource)->id = res->id;
 582                 (*resource)++;
 583         default:
 584                 return AE_OK;
 585         }
 586
 587         return AE_OK;
 588 }
 589
 590 int pnpacpi_build_resource_template(acpi_handle handle,
 591         struct acpi_buffer *buffer)
 592 {
 593         struct acpi_resource *resource;
 594         int res_cnt = 0;
 595         acpi_status status;
 596
 597         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 598                 pnpacpi_count_resources, &res_cnt);
 599         if (ACPI_FAILURE(status)) {
 600                 pnp_err("Evaluate _CRS failed");
 601                 return -EINVAL;
 602         }
 603         if (!res_cnt)
 604                 return -EINVAL;
 605         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 606         buffer->pointer = pnpacpi_kmalloc(buffer->length - 1, GFP_KERNEL);
 607         if (!buffer->pointer)
 608                 return -ENOMEM;
 609         pnp_dbg("Res cnt %d", res_cnt);
 610         resource = (struct acpi_resource *)buffer->pointer;
 611         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 612                 pnpacpi_type_resources, &resource);
 613         if (ACPI_FAILURE(status)) {
 614                 kfree(buffer->pointer);
 615                 pnp_err("Evaluate _CRS failed");
 616                 return -EINVAL;
 617         }
 618         /* resource will pointer the end resource now */
 619         resource->id = ACPI_RSTYPE_END_TAG;
 620
 621         return 0;
 622 }
 623
 624 static void pnpacpi_encode_irq(struct acpi_resource *resource,
 625         struct resource *p)
 626 {
 627         int edge_level, active_high_low;
 628
 629         decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level,
 630                 &active_high_low);
 631         resource->id = ACPI_RSTYPE_IRQ;
 632         resource->length = sizeof(struct acpi_resource);
 633         resource->data.irq.edge_level = edge_level;
 634         resource->data.irq.active_high_low = active_high_low;
 635         if (edge_level == ACPI_EDGE_SENSITIVE)
 636                 resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
 637         else
 638                 resource->data.irq.shared_exclusive = ACPI_SHARED;
 639         resource->data.irq.number_of_interrupts = 1;
 640         resource->data.irq.interrupts[0] = p->start;
 641 }
 642
 643 static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
 644         struct resource *p)
 645 {
 646         int edge_level, active_high_low;
 647
 648         decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level,
 649                 &active_high_low);
 650         resource->id = ACPI_RSTYPE_EXT_IRQ;
 651         resource->length = sizeof(struct acpi_resource);
 652         resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
 653         resource->data.extended_irq.edge_level = edge_level;
 654         resource->data.extended_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.extended_irq.number_of_interrupts = 1;
 660         resource->data.extended_irq.interrupts[0] = p->start;
 661 }
 662
 663 static void pnpacpi_encode_dma(struct acpi_resource *resource,
 664         struct resource *p)
 665 {
 666         resource->id = ACPI_RSTYPE_DMA;
 667         resource->length = sizeof(struct acpi_resource);
 668         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 669         if (p->flags & IORESOURCE_DMA_COMPATIBLE)
 670                 resource->data.dma.type = ACPI_COMPATIBILITY;
 671         else if (p->flags & IORESOURCE_DMA_TYPEA)
 672                 resource->data.dma.type = ACPI_TYPE_A;
 673         else if (p->flags & IORESOURCE_DMA_TYPEB)
 674                 resource->data.dma.type = ACPI_TYPE_B;
 675         else if (p->flags & IORESOURCE_DMA_TYPEF)
 676                 resource->data.dma.type = ACPI_TYPE_F;
 677         if (p->flags & IORESOURCE_DMA_8BIT)
 678                 resource->data.dma.transfer = ACPI_TRANSFER_8;
 679         else if (p->flags & IORESOURCE_DMA_8AND16BIT)
 680                 resource->data.dma.transfer = ACPI_TRANSFER_8_16;
 681         else if (p->flags & IORESOURCE_DMA_16BIT)
 682                 resource->data.dma.transfer = ACPI_TRANSFER_16;
 683         resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER;
 684         resource->data.dma.number_of_channels = 1;
 685         resource->data.dma.channels[0] = p->start;
 686 }
 687
 688 static void pnpacpi_encode_io(struct acpi_resource *resource,
 689         struct resource *p)
 690 {
 691         resource->id = ACPI_RSTYPE_IO;
 692         resource->length = sizeof(struct acpi_resource);
 693         /* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
 694         resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
 695                 ACPI_DECODE_16 : ACPI_DECODE_10;
 696         resource->data.io.min_base_address = p->start;
 697         resource->data.io.max_base_address = p->end;
 698         resource->data.io.alignment = 0; /* Correct? */
 699         resource->data.io.range_length = p->end - p->start + 1;
 700 }
 701
 702 static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
 703         struct resource *p)
 704 {
 705         resource->id = ACPI_RSTYPE_FIXED_IO;
 706         resource->length = sizeof(struct acpi_resource);
 707         resource->data.fixed_io.base_address = p->start;
 708         resource->data.fixed_io.range_length = p->end - p->start + 1;
 709 }
 710
 711 static void pnpacpi_encode_mem24(struct acpi_resource *resource,
 712         struct resource *p)
 713 {
 714         resource->id = ACPI_RSTYPE_MEM24;
 715         resource->length = sizeof(struct acpi_resource);
 716         /* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
 717         resource->data.memory24.read_write_attribute =
 718                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 719                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 720         resource->data.memory24.min_base_address = p->start;
 721         resource->data.memory24.max_base_address = p->end;
 722         resource->data.memory24.alignment = 0;
 723         resource->data.memory24.range_length = p->end - p->start + 1;
 724 }
 725
 726 static void pnpacpi_encode_mem32(struct acpi_resource *resource,
 727         struct resource *p)
 728 {
 729         resource->id = ACPI_RSTYPE_MEM32;
 730         resource->length = sizeof(struct acpi_resource);
 731         resource->data.memory32.read_write_attribute =
 732                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 733                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 734         resource->data.memory32.min_base_address = p->start;
 735         resource->data.memory32.max_base_address = p->end;
 736         resource->data.memory32.alignment = 0;
 737         resource->data.memory32.range_length = p->end - p->start + 1;
 738 }
 739
 740 static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
 741         struct resource *p)
 742 {
 743         resource->id = ACPI_RSTYPE_FIXED_MEM32;
 744         resource->length = sizeof(struct acpi_resource);
 745         resource->data.fixed_memory32.read_write_attribute =
 746                 (p->flags & IORESOURCE_MEM_WRITEABLE) ?
 747                 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
 748         resource->data.fixed_memory32.range_base_address = p->start;
 749         resource->data.fixed_memory32.range_length = p->end - p->start + 1;
 750 }
 751
 752 int pnpacpi_encode_resources(struct pnp_resource_table *res_table,
 753         struct acpi_buffer *buffer)
 754 {
 755         int i = 0;
 756         /* pnpacpi_build_resource_template allocates extra mem */
 757         int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
 758         struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
 759         int port = 0, irq = 0, dma = 0, mem = 0;
 760
 761         pnp_dbg("res cnt %d", res_cnt);
 762         while (i < res_cnt) {
 763                 switch(resource->id) {
 764                 case ACPI_RSTYPE_IRQ:
 765                         pnp_dbg("Encode irq");
 766                         pnpacpi_encode_irq(resource,
 767                                 &res_table->irq_resource[irq]);
 768                         irq++;
 769                         break;
 770
 771                 case ACPI_RSTYPE_EXT_IRQ:
 772                         pnp_dbg("Encode ext irq");
 773                         pnpacpi_encode_ext_irq(resource,
 774                                 &res_table->irq_resource[irq]);
 775                         irq++;
 776                         break;
 777                 case ACPI_RSTYPE_DMA:
 778                         pnp_dbg("Encode dma");
 779                         pnpacpi_encode_dma(resource,
 780                                 &res_table->dma_resource[dma]);
 781                         dma ++;
 782                         break;
 783                 case ACPI_RSTYPE_IO:
 784                         pnp_dbg("Encode io");
 785                         pnpacpi_encode_io(resource,
 786                                 &res_table->port_resource[port]);
 787                         port ++;
 788                         break;
 789                 case ACPI_RSTYPE_FIXED_IO:
 790                         pnp_dbg("Encode fixed io");
 791                         pnpacpi_encode_fixed_io(resource,
 792                                 &res_table->port_resource[port]);
 793                         port ++;
 794                         break;
 795                 case ACPI_RSTYPE_MEM24:
 796                         pnp_dbg("Encode mem24");
 797                         pnpacpi_encode_mem24(resource,
 798                                 &res_table->mem_resource[mem]);
 799                         mem ++;
 800                         break;
 801                 case ACPI_RSTYPE_MEM32:
 802                         pnp_dbg("Encode mem32");
 803                         pnpacpi_encode_mem32(resource,
 804                                 &res_table->mem_resource[mem]);
 805                         mem ++;
 806                         break;
 807                 case ACPI_RSTYPE_FIXED_MEM32:
 808                         pnp_dbg("Encode fixed mem32");
 809                         pnpacpi_encode_fixed_mem32(resource,
 810                                 &res_table->mem_resource[mem]);
 811                         mem ++;
 812                         break;
 813                 default: /* other type */
 814                         pnp_warn("unknown resource type %d", resource->id);
 815                         return -EINVAL;
 816                 }
 817                 resource ++;
 818                 i ++;
 819         }
 820         return 0;
 821 }