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  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
   7  *      Bjorn Helgaas <bjorn.helgaas@hp.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2, or (at your option) any
  12  * later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23 #include <linux/kernel.h>
  24 #include <linux/acpi.h>
  25 #include <linux/pci.h>
  26 #include <linux/pnp.h>
  27 #include <linux/slab.h>
  28 #include "../base.h"
  29 #include "pnpacpi.h"
  30
  31 #ifdef CONFIG_IA64
  32 #define valid_IRQ(i) (1)
  33 #else
  34 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
  35 #endif
  36
  37 /*
  38  * Allocated Resources
  39  */
  40 static int irq_flags(int triggering, int polarity, int shareable)
  41 {
  42         int flags;
  43
  44         if (triggering == ACPI_LEVEL_SENSITIVE) {
  45                 if (polarity == ACPI_ACTIVE_LOW)
  46                         flags = IORESOURCE_IRQ_LOWLEVEL;
  47                 else
  48                         flags = IORESOURCE_IRQ_HIGHLEVEL;
  49         } else {
  50                 if (polarity == ACPI_ACTIVE_LOW)
  51                         flags = IORESOURCE_IRQ_LOWEDGE;
  52                 else
  53                         flags = IORESOURCE_IRQ_HIGHEDGE;
  54         }
  55
  56         if (shareable == ACPI_SHARED)
  57                 flags |= IORESOURCE_IRQ_SHAREABLE;
  58
  59         return flags;
  60 }
  61
  62 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
  63                              int *polarity, int *shareable)
  64 {
  65         switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
  66                          IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
  67         case IORESOURCE_IRQ_LOWLEVEL:
  68                 *triggering = ACPI_LEVEL_SENSITIVE;
  69                 *polarity = ACPI_ACTIVE_LOW;
  70                 break;
  71         case IORESOURCE_IRQ_HIGHLEVEL:
  72                 *triggering = ACPI_LEVEL_SENSITIVE;
  73                 *polarity = ACPI_ACTIVE_HIGH;
  74                 break;
  75         case IORESOURCE_IRQ_LOWEDGE:
  76                 *triggering = ACPI_EDGE_SENSITIVE;
  77                 *polarity = ACPI_ACTIVE_LOW;
  78                 break;
  79         case IORESOURCE_IRQ_HIGHEDGE:
  80                 *triggering = ACPI_EDGE_SENSITIVE;
  81                 *polarity = ACPI_ACTIVE_HIGH;
  82                 break;
  83         default:
  84                 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
  85                         flags);
  86                 *triggering = ACPI_EDGE_SENSITIVE;
  87                 *polarity = ACPI_ACTIVE_HIGH;
  88                 break;
  89         }
  90
  91         if (flags & IORESOURCE_IRQ_SHAREABLE)
  92                 *shareable = ACPI_SHARED;
  93         else
  94                 *shareable = ACPI_EXCLUSIVE;
  95 }
  96
  97 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
  98                                                 u32 gsi, int triggering,
  99                                                 int polarity, int shareable)
 100 {
 101         int irq, flags;
 102         int p, t;
 103
 104         if (!valid_IRQ(gsi)) {
 105                 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
 106                 return;
 107         }
 108
 109         /*
 110          * in IO-APIC mode, use overrided attribute. Two reasons:
 111          * 1. BIOS bug in DSDT
 112          * 2. BIOS uses IO-APIC mode Interrupt Source Override
 113          */
 114         if (!acpi_get_override_irq(gsi, &t, &p)) {
 115                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 116                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 117
 118                 if (triggering != t || polarity != p) {
 119                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
 120                                 gsi, t ? "edge":"level", p ? "low":"high");
 121                         triggering = t;
 122                         polarity = p;
 123                 }
 124         }
 125
 126         flags = irq_flags(triggering, polarity, shareable);
 127         irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 128         if (irq >= 0)
 129                 pcibios_penalize_isa_irq(irq, 1);
 130         else
 131                 flags |= IORESOURCE_DISABLED;
 132
 133         pnp_add_irq_resource(dev, irq, flags);
 134 }
 135
 136 static int dma_flags(struct pnp_dev *dev, int type, int bus_master,
 137                      int transfer)
 138 {
 139         int flags = 0;
 140
 141         if (bus_master)
 142                 flags |= IORESOURCE_DMA_MASTER;
 143         switch (type) {
 144         case ACPI_COMPATIBILITY:
 145                 flags |= IORESOURCE_DMA_COMPATIBLE;
 146                 break;
 147         case ACPI_TYPE_A:
 148                 flags |= IORESOURCE_DMA_TYPEA;
 149                 break;
 150         case ACPI_TYPE_B:
 151                 flags |= IORESOURCE_DMA_TYPEB;
 152                 break;
 153         case ACPI_TYPE_F:
 154                 flags |= IORESOURCE_DMA_TYPEF;
 155                 break;
 156         default:
 157                 /* Set a default value ? */
 158                 flags |= IORESOURCE_DMA_COMPATIBLE;
 159                 dev_err(&dev->dev, "invalid DMA type %d\n", type);
 160         }
 161         switch (transfer) {
 162         case ACPI_TRANSFER_8:
 163                 flags |= IORESOURCE_DMA_8BIT;
 164                 break;
 165         case ACPI_TRANSFER_8_16:
 166                 flags |= IORESOURCE_DMA_8AND16BIT;
 167                 break;
 168         case ACPI_TRANSFER_16:
 169                 flags |= IORESOURCE_DMA_16BIT;
 170                 break;
 171         default:
 172                 /* Set a default value ? */
 173                 flags |= IORESOURCE_DMA_8AND16BIT;
 174                 dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer);
 175         }
 176
 177         return flags;
 178 }
 179
 180 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
 181                                                u64 len, int io_decode,
 182                                                int window)
 183 {
 184         int flags = 0;
 185         u64 end = start + len - 1;
 186
 187         if (io_decode == ACPI_DECODE_16)
 188                 flags |= IORESOURCE_IO_16BIT_ADDR;
 189         if (len == 0 || end >= 0x10003)
 190                 flags |= IORESOURCE_DISABLED;
 191         if (window)
 192                 flags |= IORESOURCE_WINDOW;
 193
 194         pnp_add_io_resource(dev, start, end, flags);
 195 }
 196
 197 /*
 198  * Device CSRs that do not appear in PCI config space should be described
 199  * via ACPI.  This would normally be done with Address Space Descriptors
 200  * marked as "consumer-only," but old versions of Windows and Linux ignore
 201  * the producer/consumer flag, so HP invented a vendor-defined resource to
 202  * describe the location and size of CSR space.
 203  */
 204 static struct acpi_vendor_uuid hp_ccsr_uuid = {
 205         .subtype = 2,
 206         .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
 207             0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
 208 };
 209
 210 static int vendor_resource_matches(struct pnp_dev *dev,
 211                                    struct acpi_resource_vendor_typed *vendor,
 212                                    struct acpi_vendor_uuid *match,
 213                                    int expected_len)
 214 {
 215         int uuid_len = sizeof(vendor->uuid);
 216         u8 uuid_subtype = vendor->uuid_subtype;
 217         u8 *uuid = vendor->uuid;
 218         int actual_len;
 219
 220         /* byte_length includes uuid_subtype and uuid */
 221         actual_len = vendor->byte_length - uuid_len - 1;
 222
 223         if (uuid_subtype == match->subtype &&
 224             uuid_len == sizeof(match->data) &&
 225             memcmp(uuid, match->data, uuid_len) == 0) {
 226                 if (expected_len && expected_len != actual_len) {
 227                         dev_err(&dev->dev, "wrong vendor descriptor size; "
 228                                 "expected %d, found %d bytes\n",
 229                                 expected_len, actual_len);
 230                         return 0;
 231                 }
 232
 233                 return 1;
 234         }
 235
 236         return 0;
 237 }
 238
 239 static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev,
 240                                     struct acpi_resource_vendor_typed *vendor)
 241 {
 242         if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) {
 243                 u64 start, length;
 244
 245                 memcpy(&start, vendor->byte_data, sizeof(start));
 246                 memcpy(&length, vendor->byte_data + 8, sizeof(length));
 247
 248                 pnp_add_mem_resource(dev, start, start + length - 1, 0);
 249         }
 250 }
 251
 252 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
 253                                                 u64 start, u64 len,
 254                                                 int write_protect, int window)
 255 {
 256         int flags = 0;
 257         u64 end = start + len - 1;
 258
 259         if (len == 0)
 260                 flags |= IORESOURCE_DISABLED;
 261         if (write_protect == ACPI_READ_WRITE_MEMORY)
 262                 flags |= IORESOURCE_MEM_WRITEABLE;
 263         if (window)
 264                 flags |= IORESOURCE_WINDOW;
 265
 266         pnp_add_mem_resource(dev, start, end, flags);
 267 }
 268
 269 static void pnpacpi_parse_allocated_busresource(struct pnp_dev *dev,
 270                                                 u64 start, u64 len)
 271 {
 272         u64 end = start + len - 1;
 273
 274         pnp_add_bus_resource(dev, start, end);
 275 }
 276
 277 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 278                                                   struct acpi_resource *res)
 279 {
 280         struct acpi_resource_address64 addr, *p = &addr;
 281         acpi_status status;
 282         int window;
 283         u64 len;
 284
 285         status = acpi_resource_to_address64(res, p);
 286         if (!ACPI_SUCCESS(status)) {
 287                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
 288                          res->type);
 289                 return;
 290         }
 291
 292         /* Windows apparently computes length rather than using _LEN */
 293         len = p->maximum - p->minimum + 1;
 294         window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
 295
 296         if (p->resource_type == ACPI_MEMORY_RANGE)
 297                 pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
 298                         p->info.mem.write_protect, window);
 299         else if (p->resource_type == ACPI_IO_RANGE)
 300                 pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
 301                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 302                                 ACPI_DECODE_16, window);
 303         else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
 304                 pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
 305 }
 306
 307 static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
 308                                                       struct acpi_resource *res)
 309 {
 310         struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
 311         int window;
 312         u64 len;
 313
 314         /* Windows apparently computes length rather than using _LEN */
 315         len = p->maximum - p->minimum + 1;
 316         window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
 317
 318         if (p->resource_type == ACPI_MEMORY_RANGE)
 319                 pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
 320                         p->info.mem.write_protect, window);
 321         else if (p->resource_type == ACPI_IO_RANGE)
 322                 pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
 323                         p->granularity == 0xfff ? ACPI_DECODE_10 :
 324                                 ACPI_DECODE_16, window);
 325         else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
 326                 pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
 327 }
 328
 329 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 330                                               void *data)
 331 {
 332         struct pnp_dev *dev = data;
 333         struct acpi_resource_irq *irq;
 334         struct acpi_resource_dma *dma;
 335         struct acpi_resource_io *io;
 336         struct acpi_resource_fixed_io *fixed_io;
 337         struct acpi_resource_vendor_typed *vendor_typed;
 338         struct acpi_resource_memory24 *memory24;
 339         struct acpi_resource_memory32 *memory32;
 340         struct acpi_resource_fixed_memory32 *fixed_memory32;
 341         struct acpi_resource_extended_irq *extended_irq;
 342         int i, flags;
 343
 344         switch (res->type) {
 345         case ACPI_RESOURCE_TYPE_IRQ:
 346                 /*
 347                  * Per spec, only one interrupt per descriptor is allowed in
 348                  * _CRS, but some firmware violates this, so parse them all.
 349                  */
 350                 irq = &res->data.irq;
 351                 if (irq->interrupt_count == 0)
 352                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 353                 else {
 354                         for (i = 0; i < irq->interrupt_count; i++) {
 355                                 pnpacpi_parse_allocated_irqresource(dev,
 356                                         irq->interrupts[i],
 357                                         irq->triggering,
 358                                         irq->polarity,
 359                                     irq->sharable);
 360                         }
 361
 362                         /*
 363                          * The IRQ encoder puts a single interrupt in each
 364                          * descriptor, so if a _CRS descriptor has more than
 365                          * one interrupt, we won't be able to re-encode it.
 366                          */
 367                         if (pnp_can_write(dev) && irq->interrupt_count > 1) {
 368                                 dev_warn(&dev->dev, "multiple interrupts in "
 369                                          "_CRS descriptor; configuration can't "
 370                                          "be changed\n");
 371                                 dev->capabilities &= ~PNP_WRITE;
 372                         }
 373                 }
 374                 break;
 375
 376         case ACPI_RESOURCE_TYPE_DMA:
 377                 dma = &res->data.dma;
 378                 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
 379                         flags = dma_flags(dev, dma->type, dma->bus_master,
 380                                           dma->transfer);
 381                 else
 382                         flags = IORESOURCE_DISABLED;
 383                 pnp_add_dma_resource(dev, dma->channels[0], flags);
 384                 break;
 385
 386         case ACPI_RESOURCE_TYPE_IO:
 387                 io = &res->data.io;
 388                 pnpacpi_parse_allocated_ioresource(dev,
 389                         io->minimum,
 390                         io->address_length,
 391                         io->io_decode, 0);
 392                 break;
 393
 394         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 395         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 396                 break;
 397
 398         case ACPI_RESOURCE_TYPE_FIXED_IO:
 399                 fixed_io = &res->data.fixed_io;
 400                 pnpacpi_parse_allocated_ioresource(dev,
 401                         fixed_io->address,
 402                         fixed_io->address_length,
 403                         ACPI_DECODE_10, 0);
 404                 break;
 405
 406         case ACPI_RESOURCE_TYPE_VENDOR:
 407                 vendor_typed = &res->data.vendor_typed;
 408                 pnpacpi_parse_allocated_vendor(dev, vendor_typed);
 409                 break;
 410
 411         case ACPI_RESOURCE_TYPE_END_TAG:
 412                 break;
 413
 414         case ACPI_RESOURCE_TYPE_MEMORY24:
 415                 memory24 = &res->data.memory24;
 416                 pnpacpi_parse_allocated_memresource(dev,
 417                         memory24->minimum,
 418                         memory24->address_length,
 419                         memory24->write_protect, 0);
 420                 break;
 421         case ACPI_RESOURCE_TYPE_MEMORY32:
 422                 memory32 = &res->data.memory32;
 423                 pnpacpi_parse_allocated_memresource(dev,
 424                         memory32->minimum,
 425                         memory32->address_length,
 426                         memory32->write_protect, 0);
 427                 break;
 428         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 429                 fixed_memory32 = &res->data.fixed_memory32;
 430                 pnpacpi_parse_allocated_memresource(dev,
 431                         fixed_memory32->address,
 432                         fixed_memory32->address_length,
 433                         fixed_memory32->write_protect, 0);
 434                 break;
 435         case ACPI_RESOURCE_TYPE_ADDRESS16:
 436         case ACPI_RESOURCE_TYPE_ADDRESS32:
 437         case ACPI_RESOURCE_TYPE_ADDRESS64:
 438                 pnpacpi_parse_allocated_address_space(dev, res);
 439                 break;
 440
 441         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 442                 pnpacpi_parse_allocated_ext_address_space(dev, res);
 443                 break;
 444
 445         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 446                 extended_irq = &res->data.extended_irq;
 447
 448                 if (extended_irq->interrupt_count == 0)
 449                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
 450                 else {
 451                         for (i = 0; i < extended_irq->interrupt_count; i++) {
 452                                 pnpacpi_parse_allocated_irqresource(dev,
 453                                         extended_irq->interrupts[i],
 454                                         extended_irq->triggering,
 455                                         extended_irq->polarity,
 456                                         extended_irq->sharable);
 457                         }
 458
 459                         /*
 460                          * The IRQ encoder puts a single interrupt in each
 461                          * descriptor, so if a _CRS descriptor has more than
 462                          * one interrupt, we won't be able to re-encode it.
 463                          */
 464                         if (pnp_can_write(dev) &&
 465                             extended_irq->interrupt_count > 1) {
 466                                 dev_warn(&dev->dev, "multiple interrupts in "
 467                                          "_CRS descriptor; configuration can't "
 468                                          "be changed\n");
 469                                 dev->capabilities &= ~PNP_WRITE;
 470                         }
 471                 }
 472                 break;
 473
 474         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 475                 break;
 476
 477         default:
 478                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
 479                          res->type);
 480                 return AE_ERROR;
 481         }
 482
 483         return AE_OK;
 484 }
 485
 486 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
 487 {
 488         struct acpi_device *acpi_dev = dev->data;
 489         acpi_handle handle = acpi_dev->handle;
 490         acpi_status status;
 491
 492         pnp_dbg(&dev->dev, "parse allocated resources\n");
 493
 494         pnp_init_resources(dev);
 495
 496         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 497                                      pnpacpi_allocated_resource, dev);
 498
 499         if (ACPI_FAILURE(status)) {
 500                 if (status != AE_NOT_FOUND)
 501                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
 502                 return -EPERM;
 503         }
 504         return 0;
 505 }
 506
 507 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
 508                                             unsigned int option_flags,
 509                                             struct acpi_resource_dma *p)
 510 {
 511         int i;
 512         unsigned char map = 0, flags;
 513
 514         for (i = 0; i < p->channel_count; i++)
 515                 map |= 1 << p->channels[i];
 516
 517         flags = dma_flags(dev, p->type, p->bus_master, p->transfer);
 518         pnp_register_dma_resource(dev, option_flags, map, flags);
 519 }
 520
 521 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
 522                                             unsigned int option_flags,
 523                                             struct acpi_resource_irq *p)
 524 {
 525         int i;
 526         pnp_irq_mask_t map;
 527         unsigned char flags;
 528
 529         bitmap_zero(map.bits, PNP_IRQ_NR);
 530         for (i = 0; i < p->interrupt_count; i++)
 531                 if (p->interrupts[i])
 532                         __set_bit(p->interrupts[i], map.bits);
 533
 534         flags = irq_flags(p->triggering, p->polarity, p->sharable);
 535         pnp_register_irq_resource(dev, option_flags, &map, flags);
 536 }
 537
 538 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
 539                                         unsigned int option_flags,
 540                                         struct acpi_resource_extended_irq *p)
 541 {
 542         int i;
 543         pnp_irq_mask_t map;
 544         unsigned char flags;
 545
 546         bitmap_zero(map.bits, PNP_IRQ_NR);
 547         for (i = 0; i < p->interrupt_count; i++) {
 548                 if (p->interrupts[i]) {
 549                         if (p->interrupts[i] < PNP_IRQ_NR)
 550                                 __set_bit(p->interrupts[i], map.bits);
 551                         else
 552                                 dev_err(&dev->dev, "ignoring IRQ %d option "
 553                                         "(too large for %d entry bitmap)\n",
 554                                         p->interrupts[i], PNP_IRQ_NR);
 555                 }
 556         }
 557
 558         flags = irq_flags(p->triggering, p->polarity, p->sharable);
 559         pnp_register_irq_resource(dev, option_flags, &map, flags);
 560 }
 561
 562 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
 563                                              unsigned int option_flags,
 564                                              struct acpi_resource_io *io)
 565 {
 566         unsigned char flags = 0;
 567
 568         if (io->io_decode == ACPI_DECODE_16)
 569                 flags = IORESOURCE_IO_16BIT_ADDR;
 570         pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum,
 571                                    io->alignment, io->address_length, flags);
 572 }
 573
 574 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
 575                                         unsigned int option_flags,
 576                                         struct acpi_resource_fixed_io *io)
 577 {
 578         pnp_register_port_resource(dev, option_flags, io->address, io->address,
 579                                    0, io->address_length, IORESOURCE_IO_FIXED);
 580 }
 581
 582 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
 583                                               unsigned int option_flags,
 584                                               struct acpi_resource_memory24 *p)
 585 {
 586         unsigned char flags = 0;
 587
 588         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 589                 flags = IORESOURCE_MEM_WRITEABLE;
 590         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
 591                                   p->alignment, p->address_length, flags);
 592 }
 593
 594 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
 595                                               unsigned int option_flags,
 596                                               struct acpi_resource_memory32 *p)
 597 {
 598         unsigned char flags = 0;
 599
 600         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 601                 flags = IORESOURCE_MEM_WRITEABLE;
 602         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
 603                                   p->alignment, p->address_length, flags);
 604 }
 605
 606 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
 607                                         unsigned int option_flags,
 608                                         struct acpi_resource_fixed_memory32 *p)
 609 {
 610         unsigned char flags = 0;
 611
 612         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
 613                 flags = IORESOURCE_MEM_WRITEABLE;
 614         pnp_register_mem_resource(dev, option_flags, p->address, p->address,
 615                                   0, p->address_length, flags);
 616 }
 617
 618 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 619                                                 unsigned int option_flags,
 620                                                 struct acpi_resource *r)
 621 {
 622         struct acpi_resource_address64 addr, *p = &addr;
 623         acpi_status status;
 624         unsigned char flags = 0;
 625
 626         status = acpi_resource_to_address64(r, p);
 627         if (ACPI_FAILURE(status)) {
 628                 dev_warn(&dev->dev, "can't convert resource type %d\n",
 629                          r->type);
 630                 return;
 631         }
 632
 633         if (p->resource_type == ACPI_MEMORY_RANGE) {
 634                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
 635                         flags = IORESOURCE_MEM_WRITEABLE;
 636                 pnp_register_mem_resource(dev, option_flags, p->minimum,
 637                                           p->minimum, 0, p->address_length,
 638                                           flags);
 639         } else if (p->resource_type == ACPI_IO_RANGE)
 640                 pnp_register_port_resource(dev, option_flags, p->minimum,
 641                                            p->minimum, 0, p->address_length,
 642                                            IORESOURCE_IO_FIXED);
 643 }
 644
 645 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
 646                                                     unsigned int option_flags,
 647                                                     struct acpi_resource *r)
 648 {
 649         struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
 650         unsigned char flags = 0;
 651
 652         if (p->resource_type == ACPI_MEMORY_RANGE) {
 653                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
 654                         flags = IORESOURCE_MEM_WRITEABLE;
 655                 pnp_register_mem_resource(dev, option_flags, p->minimum,
 656                                           p->minimum, 0, p->address_length,
 657                                           flags);
 658         } else if (p->resource_type == ACPI_IO_RANGE)
 659                 pnp_register_port_resource(dev, option_flags, p->minimum,
 660                                            p->minimum, 0, p->address_length,
 661                                            IORESOURCE_IO_FIXED);
 662 }
 663
 664 struct acpipnp_parse_option_s {
 665         struct pnp_dev *dev;
 666         unsigned int option_flags;
 667 };
 668
 669 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 670                                                   void *data)
 671 {
 672         int priority;
 673         struct acpipnp_parse_option_s *parse_data = data;
 674         struct pnp_dev *dev = parse_data->dev;
 675         unsigned int option_flags = parse_data->option_flags;
 676
 677         switch (res->type) {
 678         case ACPI_RESOURCE_TYPE_IRQ:
 679                 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
 680                 break;
 681
 682         case ACPI_RESOURCE_TYPE_DMA:
 683                 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
 684                 break;
 685
 686         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 687                 switch (res->data.start_dpf.compatibility_priority) {
 688                 case ACPI_GOOD_CONFIGURATION:
 689                         priority = PNP_RES_PRIORITY_PREFERRED;
 690                         break;
 691
 692                 case ACPI_ACCEPTABLE_CONFIGURATION:
 693                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
 694                         break;
 695
 696                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
 697                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
 698                         break;
 699                 default:
 700                         priority = PNP_RES_PRIORITY_INVALID;
 701                         break;
 702                 }
 703                 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
 704                 break;
 705
 706         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 707                 parse_data->option_flags = 0;
 708                 break;
 709
 710         case ACPI_RESOURCE_TYPE_IO:
 711                 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
 712                 break;
 713
 714         case ACPI_RESOURCE_TYPE_FIXED_IO:
 715                 pnpacpi_parse_fixed_port_option(dev, option_flags,
 716                                                 &res->data.fixed_io);
 717                 break;
 718
 719         case ACPI_RESOURCE_TYPE_VENDOR:
 720         case ACPI_RESOURCE_TYPE_END_TAG:
 721                 break;
 722
 723         case ACPI_RESOURCE_TYPE_MEMORY24:
 724                 pnpacpi_parse_mem24_option(dev, option_flags,
 725                                            &res->data.memory24);
 726                 break;
 727
 728         case ACPI_RESOURCE_TYPE_MEMORY32:
 729                 pnpacpi_parse_mem32_option(dev, option_flags,
 730                                            &res->data.memory32);
 731                 break;
 732
 733         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 734                 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
 735                                                  &res->data.fixed_memory32);
 736                 break;
 737
 738         case ACPI_RESOURCE_TYPE_ADDRESS16:
 739         case ACPI_RESOURCE_TYPE_ADDRESS32:
 740         case ACPI_RESOURCE_TYPE_ADDRESS64:
 741                 pnpacpi_parse_address_option(dev, option_flags, res);
 742                 break;
 743
 744         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 745                 pnpacpi_parse_ext_address_option(dev, option_flags, res);
 746                 break;
 747
 748         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 749                 pnpacpi_parse_ext_irq_option(dev, option_flags,
 750                                              &res->data.extended_irq);
 751                 break;
 752
 753         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
 754                 break;
 755
 756         default:
 757                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
 758                          res->type);
 759                 return AE_ERROR;
 760         }
 761
 762         return AE_OK;
 763 }
 764
 765 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
 766 {
 767         struct acpi_device *acpi_dev = dev->data;
 768         acpi_handle handle = acpi_dev->handle;
 769         acpi_status status;
 770         struct acpipnp_parse_option_s parse_data;
 771
 772         pnp_dbg(&dev->dev, "parse resource options\n");
 773
 774         parse_data.dev = dev;
 775         parse_data.option_flags = 0;
 776
 777         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
 778                                      pnpacpi_option_resource, &parse_data);
 779
 780         if (ACPI_FAILURE(status)) {
 781                 if (status != AE_NOT_FOUND)
 782                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
 783                 return -EPERM;
 784         }
 785         return 0;
 786 }
 787
 788 static int pnpacpi_supported_resource(struct acpi_resource *res)
 789 {
 790         switch (res->type) {
 791         case ACPI_RESOURCE_TYPE_IRQ:
 792         case ACPI_RESOURCE_TYPE_DMA:
 793         case ACPI_RESOURCE_TYPE_IO:
 794         case ACPI_RESOURCE_TYPE_FIXED_IO:
 795         case ACPI_RESOURCE_TYPE_MEMORY24:
 796         case ACPI_RESOURCE_TYPE_MEMORY32:
 797         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 798         case ACPI_RESOURCE_TYPE_ADDRESS16:
 799         case ACPI_RESOURCE_TYPE_ADDRESS32:
 800         case ACPI_RESOURCE_TYPE_ADDRESS64:
 801         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 802         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 803                 return 1;
 804         }
 805         return 0;
 806 }
 807
 808 /*
 809  * Set resource
 810  */
 811 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
 812                                            void *data)
 813 {
 814         int *res_cnt = data;
 815
 816         if (pnpacpi_supported_resource(res))
 817                 (*res_cnt)++;
 818         return AE_OK;
 819 }
 820
 821 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
 822 {
 823         struct acpi_resource **resource = data;
 824
 825         if (pnpacpi_supported_resource(res)) {
 826                 (*resource)->type = res->type;
 827                 (*resource)->length = sizeof(struct acpi_resource);
 828                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
 829                         (*resource)->data.irq.descriptor_length =
 830                                         res->data.irq.descriptor_length;
 831                 (*resource)++;
 832         }
 833
 834         return AE_OK;
 835 }
 836
 837 int pnpacpi_build_resource_template(struct pnp_dev *dev,
 838                                     struct acpi_buffer *buffer)
 839 {
 840         struct acpi_device *acpi_dev = dev->data;
 841         acpi_handle handle = acpi_dev->handle;
 842         struct acpi_resource *resource;
 843         int res_cnt = 0;
 844         acpi_status status;
 845
 846         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 847                                      pnpacpi_count_resources, &res_cnt);
 848         if (ACPI_FAILURE(status)) {
 849                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 850                 return -EINVAL;
 851         }
 852         if (!res_cnt)
 853                 return -EINVAL;
 854         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
 855         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
 856         if (!buffer->pointer)
 857                 return -ENOMEM;
 858
 859         resource = (struct acpi_resource *)buffer->pointer;
 860         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 861                                      pnpacpi_type_resources, &resource);
 862         if (ACPI_FAILURE(status)) {
 863                 kfree(buffer->pointer);
 864                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
 865                 return -EINVAL;
 866         }
 867         /* resource will pointer the end resource now */
 868         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
 869
 870         return 0;
 871 }
 872
 873 static void pnpacpi_encode_irq(struct pnp_dev *dev,
 874                                struct acpi_resource *resource,
 875                                struct resource *p)
 876 {
 877         struct acpi_resource_irq *irq = &resource->data.irq;
 878         int triggering, polarity, shareable;
 879
 880         if (!pnp_resource_enabled(p)) {
 881                 irq->interrupt_count = 0;
 882                 pnp_dbg(&dev->dev, "  encode irq (%s)\n",
 883                         p ? "disabled" : "missing");
 884                 return;
 885         }
 886
 887         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 888         irq->triggering = triggering;
 889         irq->polarity = polarity;
 890         irq->sharable = shareable;
 891         irq->interrupt_count = 1;
 892         irq->interrupts[0] = p->start;
 893
 894         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
 895                 (int) p->start,
 896                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 897                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 898                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
 899                 irq->descriptor_length);
 900 }
 901
 902 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
 903                                    struct acpi_resource *resource,
 904                                    struct resource *p)
 905 {
 906         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
 907         int triggering, polarity, shareable;
 908
 909         if (!pnp_resource_enabled(p)) {
 910                 extended_irq->interrupt_count = 0;
 911                 pnp_dbg(&dev->dev, "  encode extended irq (%s)\n",
 912                         p ? "disabled" : "missing");
 913                 return;
 914         }
 915
 916         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
 917         extended_irq->producer_consumer = ACPI_CONSUMER;
 918         extended_irq->triggering = triggering;
 919         extended_irq->polarity = polarity;
 920         extended_irq->sharable = shareable;
 921         extended_irq->interrupt_count = 1;
 922         extended_irq->interrupts[0] = p->start;
 923
 924         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
 925                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
 926                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
 927                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
 928 }
 929
 930 static void pnpacpi_encode_dma(struct pnp_dev *dev,
 931                                struct acpi_resource *resource,
 932                                struct resource *p)
 933 {
 934         struct acpi_resource_dma *dma = &resource->data.dma;
 935
 936         if (!pnp_resource_enabled(p)) {
 937                 dma->channel_count = 0;
 938                 pnp_dbg(&dev->dev, "  encode dma (%s)\n",
 939                         p ? "disabled" : "missing");
 940                 return;
 941         }
 942
 943         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
 944         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
 945         case IORESOURCE_DMA_TYPEA:
 946                 dma->type = ACPI_TYPE_A;
 947                 break;
 948         case IORESOURCE_DMA_TYPEB:
 949                 dma->type = ACPI_TYPE_B;
 950                 break;
 951         case IORESOURCE_DMA_TYPEF:
 952                 dma->type = ACPI_TYPE_F;
 953                 break;
 954         default:
 955                 dma->type = ACPI_COMPATIBILITY;
 956         }
 957
 958         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
 959         case IORESOURCE_DMA_8BIT:
 960                 dma->transfer = ACPI_TRANSFER_8;
 961                 break;
 962         case IORESOURCE_DMA_8AND16BIT:
 963                 dma->transfer = ACPI_TRANSFER_8_16;
 964                 break;
 965         default:
 966                 dma->transfer = ACPI_TRANSFER_16;
 967         }
 968
 969         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
 970         dma->channel_count = 1;
 971         dma->channels[0] = p->start;
 972
 973         pnp_dbg(&dev->dev, "  encode dma %d "
 974                 "type %#x transfer %#x master %d\n",
 975                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
 976 }
 977
 978 static void pnpacpi_encode_io(struct pnp_dev *dev,
 979                               struct acpi_resource *resource,
 980                               struct resource *p)
 981 {
 982         struct acpi_resource_io *io = &resource->data.io;
 983
 984         if (pnp_resource_enabled(p)) {
 985                 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
 986                 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
 987                     ACPI_DECODE_16 : ACPI_DECODE_10;
 988                 io->minimum = p->start;
 989                 io->maximum = p->end;
 990                 io->alignment = 0;      /* Correct? */
 991                 io->address_length = resource_size(p);
 992         } else {
 993                 io->minimum = 0;
 994                 io->address_length = 0;
 995         }
 996
 997         pnp_dbg(&dev->dev, "  encode io %#x-%#x decode %#x\n", io->minimum,
 998                 io->minimum + io->address_length - 1, io->io_decode);
 999 }
1000
1001 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1002                                     struct acpi_resource *resource,
1003                                     struct resource *p)
1004 {
1005         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1006
1007         if (pnp_resource_enabled(p)) {
1008                 fixed_io->address = p->start;
1009                 fixed_io->address_length = resource_size(p);
1010         } else {
1011                 fixed_io->address = 0;
1012                 fixed_io->address_length = 0;
1013         }
1014
1015         pnp_dbg(&dev->dev, "  encode fixed_io %#x-%#x\n", fixed_io->address,
1016                 fixed_io->address + fixed_io->address_length - 1);
1017 }
1018
1019 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1020                                  struct acpi_resource *resource,
1021                                  struct resource *p)
1022 {
1023         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1024
1025         if (pnp_resource_enabled(p)) {
1026                 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1027                 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1028                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1029                 memory24->minimum = p->start;
1030                 memory24->maximum = p->end;
1031                 memory24->alignment = 0;
1032                 memory24->address_length = resource_size(p);
1033         } else {
1034                 memory24->minimum = 0;
1035                 memory24->address_length = 0;
1036         }
1037
1038         pnp_dbg(&dev->dev, "  encode mem24 %#x-%#x write_protect %#x\n",
1039                 memory24->minimum,
1040                 memory24->minimum + memory24->address_length - 1,
1041                 memory24->write_protect);
1042 }
1043
1044 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1045                                  struct acpi_resource *resource,
1046                                  struct resource *p)
1047 {
1048         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1049
1050         if (pnp_resource_enabled(p)) {
1051                 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1052                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1053                 memory32->minimum = p->start;
1054                 memory32->maximum = p->end;
1055                 memory32->alignment = 0;
1056                 memory32->address_length = resource_size(p);
1057         } else {
1058                 memory32->minimum = 0;
1059                 memory32->alignment = 0;
1060         }
1061
1062         pnp_dbg(&dev->dev, "  encode mem32 %#x-%#x write_protect %#x\n",
1063                 memory32->minimum,
1064                 memory32->minimum + memory32->address_length - 1,
1065                 memory32->write_protect);
1066 }
1067
1068 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1069                                        struct acpi_resource *resource,
1070                                        struct resource *p)
1071 {
1072         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1073
1074         if (pnp_resource_enabled(p)) {
1075                 fixed_memory32->write_protect =
1076                     p->flags & IORESOURCE_MEM_WRITEABLE ?
1077                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1078                 fixed_memory32->address = p->start;
1079                 fixed_memory32->address_length = resource_size(p);
1080         } else {
1081                 fixed_memory32->address = 0;
1082                 fixed_memory32->address_length = 0;
1083         }
1084
1085         pnp_dbg(&dev->dev, "  encode fixed_mem32 %#x-%#x write_protect %#x\n",
1086                 fixed_memory32->address,
1087                 fixed_memory32->address + fixed_memory32->address_length - 1,
1088                 fixed_memory32->write_protect);
1089 }
1090
1091 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1092 {
1093         int i = 0;
1094         /* pnpacpi_build_resource_template allocates extra mem */
1095         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1096         struct acpi_resource *resource = buffer->pointer;
1097         int port = 0, irq = 0, dma = 0, mem = 0;
1098
1099         pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1100         while (i < res_cnt) {
1101                 switch (resource->type) {
1102                 case ACPI_RESOURCE_TYPE_IRQ:
1103                         pnpacpi_encode_irq(dev, resource,
1104                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1105                         irq++;
1106                         break;
1107
1108                 case ACPI_RESOURCE_TYPE_DMA:
1109                         pnpacpi_encode_dma(dev, resource,
1110                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1111                         dma++;
1112                         break;
1113                 case ACPI_RESOURCE_TYPE_IO:
1114                         pnpacpi_encode_io(dev, resource,
1115                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1116                         port++;
1117                         break;
1118                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1119                         pnpacpi_encode_fixed_io(dev, resource,
1120                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1121                         port++;
1122                         break;
1123                 case ACPI_RESOURCE_TYPE_MEMORY24:
1124                         pnpacpi_encode_mem24(dev, resource,
1125                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1126                         mem++;
1127                         break;
1128                 case ACPI_RESOURCE_TYPE_MEMORY32:
1129                         pnpacpi_encode_mem32(dev, resource,
1130                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1131                         mem++;
1132                         break;
1133                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1134                         pnpacpi_encode_fixed_mem32(dev, resource,
1135                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1136                         mem++;
1137                         break;
1138                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1139                         pnpacpi_encode_ext_irq(dev, resource,
1140                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1141                         irq++;
1142                         break;
1143                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1144                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1145                 case ACPI_RESOURCE_TYPE_VENDOR:
1146                 case ACPI_RESOURCE_TYPE_END_TAG:
1147                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1148                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1149                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1150                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1151                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1152                 default:        /* other type */
1153                         dev_warn(&dev->dev, "can't encode unknown resource "
1154                                  "type %d\n", resource->type);
1155                         return -EINVAL;
1156                 }
1157                 resource++;
1158                 i++;
1159         }
1160         return 0;
1161 }