sys/dev/acpica5/acpi_resource.c

   1 /*-
   2  * Copyright (c) 2000 Michael Smith
   3  * Copyright (c) 2000 BSDi
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/dev/acpica/acpi_resource.c,v 1.24 2004/05/30 20:08:23 phk Exp $
  28  * $DragonFly: src/sys/dev/acpica5/acpi_resource.c,v 1.8 2007/05/13 22:25:42 swildner Exp $
  29  */
  30
  31 #include "opt_acpi.h"
  32 #include <sys/param.h>
  33 #include <sys/kernel.h>
  34 #include <sys/bus.h>
  35 #include <sys/module.h>
  36 #include <sys/rman.h>
  37
  38 #include "acpi.h"
  39 #include <dev/acpica5/acpivar.h>
  40
  41 /* Hooks for the ACPI CA debugging infrastructure */
  42 #define _COMPONENT      ACPI_BUS
  43 ACPI_MODULE_NAME("RESOURCE")
  44
  45 /*
  46  * Fetch a device's resources and associate them with the device.
  47  *
  48  * Note that it might be nice to also locate ACPI-specific resource items, such
  49  * as GPE bits.
  50  *
  51  * We really need to split the resource-fetching code out from the
  52  * resource-parsing code, since we may want to use the parsing
  53  * code for _PRS someday.
  54  */
  55 ACPI_STATUS
  56 acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
  57                      struct acpi_parse_resource_set *set, void *arg)
  58 {
  59     ACPI_BUFFER         buf;
  60     ACPI_RESOURCE       *res;
  61     char                *curr, *last;
  62     ACPI_STATUS         status;
  63     void                *context;
  64
  65     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
  66
  67     /*
  68      * Special-case some devices that abuse _PRS/_CRS to mean
  69      * something other than "I consume this resource".
  70      *
  71      * XXX do we really need this?  It's only relevant once
  72      *     we start always-allocating these resources, and even
  73      *     then, the only special-cased device is likely to be
  74      *     the PCI interrupt link.
  75      */
  76
  77     /* Fetch the device's current resources. */
  78     buf.Length = ACPI_ALLOCATE_BUFFER;
  79     if (ACPI_FAILURE((status = AcpiGetCurrentResources(handle, &buf)))) {
  80         if (status != AE_NOT_FOUND && status != AE_TYPE)
  81             kprintf("can't fetch resources for %s - %s\n",
  82                    acpi_name(handle), AcpiFormatException(status));
  83         return_ACPI_STATUS (status);
  84     }
  85     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s - got %ld bytes of resources\n",
  86                      acpi_name(handle), (long)buf.Length));
  87     set->set_init(dev, arg, &context);
  88
  89     /* Iterate through the resources */
  90     curr = buf.Pointer;
  91     last = (char *)buf.Pointer + buf.Length;
  92     while (curr < last) {
  93         res = (ACPI_RESOURCE *)curr;
  94         curr += res->Length;
  95
  96         /* Handle the individual resource types */
  97         switch(res->Type) {
  98         case ACPI_RESOURCE_TYPE_END_TAG:
  99             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n"));
 100             curr = last;
 101             break;
 102         case ACPI_RESOURCE_TYPE_FIXED_IO:
 103             if (res->Data.FixedIo.AddressLength <= 0)
 104                 break;
 105             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n",
 106                              res->Data.FixedIo.Address,
 107                              res->Data.FixedIo.AddressLength));
 108             set->set_ioport(dev, context,
 109                             res->Data.FixedIo.Address,
 110                             res->Data.FixedIo.AddressLength);
 111             break;
 112         case ACPI_RESOURCE_TYPE_IO:
 113             if (res->Data.Io.AddressLength <= 0)
 114                 break;
 115             if (res->Data.Io.Minimum == res->Data.Io.Maximum) {
 116                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n",
 117                                  res->Data.Io.Minimum,
 118                                  res->Data.Io.AddressLength));
 119                 set->set_ioport(dev, context,
 120                                 res->Data.Io.Minimum,
 121                                 res->Data.Io.AddressLength);
 122             } else {
 123                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n",
 124                                  res->Data.Io.Minimum,
 125                                  res->Data.Io.Maximum,
 126                                  res->Data.Io.AddressLength));
 127                 set->set_iorange(dev, context,
 128                                  res->Data.Io.Minimum,
 129                                  res->Data.Io.Maximum,
 130                                  res->Data.Io.AddressLength,
 131                                  res->Data.Io.Alignment);
 132             }
 133             break;
 134         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
 135             if (res->Data.FixedMemory32.AddressLength <= 0)
 136                 break;
 137             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n",
 138                               res->Data.FixedMemory32.Address,
 139                               res->Data.FixedMemory32.AddressLength));
 140             set->set_memory(dev, context,
 141                             res->Data.FixedMemory32.Address,
 142                             res->Data.FixedMemory32.AddressLength);
 143             break;
 144         case ACPI_RESOURCE_TYPE_MEMORY32:
 145             if (res->Data.Memory32.AddressLength <= 0)
 146                 break;
 147             if (res->Data.Memory32.Minimum ==
 148                 res->Data.Memory32.Maximum) {
 149
 150                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n",
 151                                   res->Data.Memory32.Minimum,
 152                                   res->Data.Memory32.AddressLength));
 153                 set->set_memory(dev, context,
 154                                 res->Data.Memory32.Minimum,
 155                                 res->Data.Memory32.AddressLength);
 156             } else {
 157                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n",
 158                                  res->Data.Memory32.Minimum,
 159                                  res->Data.Memory32.Maximum,
 160                                  res->Data.Memory32.AddressLength));
 161                 set->set_memoryrange(dev, context,
 162                                      res->Data.Memory32.Minimum,
 163                                      res->Data.Memory32.Maximum,
 164                                      res->Data.Memory32.AddressLength,
 165                                      res->Data.Memory32.Alignment);
 166             }
 167             break;
 168         case ACPI_RESOURCE_TYPE_MEMORY24:
 169             if (res->Data.Memory24.AddressLength <= 0)
 170                 break;
 171             if (res->Data.Memory24.Minimum ==
 172                 res->Data.Memory24.Maximum) {
 173
 174                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n",
 175                                  res->Data.Memory24.Minimum,
 176                                  res->Data.Memory24.AddressLength));
 177                 set->set_memory(dev, context, res->Data.Memory24.Minimum,
 178                                 res->Data.Memory24.AddressLength);
 179             } else {
 180                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n",
 181                                  res->Data.Memory24.Minimum,
 182                                  res->Data.Memory24.Maximum,
 183                                  res->Data.Memory24.AddressLength));
 184                 set->set_memoryrange(dev, context,
 185                                      res->Data.Memory24.Minimum,
 186                                      res->Data.Memory24.Maximum,
 187                                      res->Data.Memory24.AddressLength,
 188                                      res->Data.Memory24.Alignment);
 189             }
 190             break;
 191         case ACPI_RESOURCE_TYPE_IRQ:
 192             /*
 193              * from 1.0b 6.4.2
 194              * "This structure is repeated for each separate interrupt
 195              * required"
 196              */
 197             set->set_irq(dev, context, res->Data.Irq.Interrupts,
 198                 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering,
 199                 res->Data.Irq.Polarity);
 200             break;
 201         case ACPI_RESOURCE_TYPE_DMA:
 202             /*
 203              * from 1.0b 6.4.3
 204              * "This structure is repeated for each separate dma channel
 205              * required"
 206              */
 207             set->set_drq(dev, context, res->Data.Dma.Channels,
 208                          res->Data.Dma.ChannelCount);
 209             break;
 210         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
 211             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n"));
 212             set->set_start_dependant(dev, context,
 213                                      res->Data.StartDpf.CompatibilityPriority);
 214             break;
 215         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
 216             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n"));
 217             set->set_end_dependant(dev, context);
 218             break;
 219         case ACPI_RESOURCE_TYPE_ADDRESS32:
 220             if (res->Data.Address32.AddressLength <= 0)
 221                 break;
 222             if (res->Data.Address32.ProducerConsumer != ACPI_CONSUMER) {
 223                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 224                     "ignored Address32 %s producer\n",
 225                     res->Data.Address32.ResourceType == ACPI_IO_RANGE ?
 226                     "IO" : "Memory"));
 227                 break;
 228             }
 229             if (res->Data.Address32.ResourceType != ACPI_MEMORY_RANGE &&
 230                 res->Data.Address32.ResourceType != ACPI_IO_RANGE) {
 231                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 232                     "ignored Address32 for non-memory, non-I/O\n"));
 233                 break;
 234             }
 235
 236             if (res->Data.Address32.Minimum == ACPI_ADDRESS_FIXED &&
 237                 res->Data.Address32.Maximum == ACPI_ADDRESS_FIXED) {
 238
 239                 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) {
 240                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 241                                      "Address32/Memory 0x%x/%d\n",
 242                                      res->Data.Address32.Minimum,
 243                                      res->Data.Address32.AddressLength));
 244                     set->set_memory(dev, context,
 245                                     res->Data.Address32.Minimum,
 246                                     res->Data.Address32.AddressLength);
 247                 } else {
 248                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 249                                      "Address32/IO 0x%x/%d\n",
 250                                      res->Data.Address32.Minimum,
 251                                      res->Data.Address32.AddressLength));
 252                     set->set_ioport(dev, context,
 253                                     res->Data.Address32.Minimum,
 254                                     res->Data.Address32.AddressLength);
 255                 }
 256             } else {
 257                 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) {
 258                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 259                                      "Address32/Memory 0x%x-0x%x/%d\n",
 260                                      res->Data.Address32.Minimum,
 261                                      res->Data.Address32.Maximum,
 262                                      res->Data.Address32.AddressLength));
 263                     set->set_memoryrange(dev, context,
 264                                           res->Data.Address32.Minimum,
 265                                           res->Data.Address32.Maximum,
 266                                           res->Data.Address32.AddressLength,
 267                                           res->Data.Address32.Granularity);
 268                 } else {
 269                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 270                                      "Address32/IO 0x%x-0x%x/%d\n",
 271                                      res->Data.Address32.Minimum,
 272                                      res->Data.Address32.Maximum,
 273                                      res->Data.Address32.AddressLength));
 274                     set->set_iorange(dev, context,
 275                                      res->Data.Address32.Minimum,
 276                                      res->Data.Address32.Maximum,
 277                                      res->Data.Address32.AddressLength,
 278                                      res->Data.Address32.Granularity);
 279                 }
 280             }
 281             break;
 282         case ACPI_RESOURCE_TYPE_ADDRESS16:
 283             if (res->Data.Address16.AddressLength <= 0)
 284                 break;
 285             if (res->Data.Address16.ProducerConsumer != ACPI_CONSUMER) {
 286                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 287                     "ignored Address16 %s producer\n",
 288                     res->Data.Address16.ResourceType == ACPI_IO_RANGE ?
 289                     "IO" : "Memory"));
 290                 break;
 291             }
 292             if (res->Data.Address16.ResourceType != ACPI_MEMORY_RANGE &&
 293                 res->Data.Address16.ResourceType != ACPI_IO_RANGE) {
 294                 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 295                         "ignored Address16 for non-memory, non-I/O\n"));
 296                 break;
 297             }
 298
 299             if (res->Data.Address16.Minimum == ACPI_ADDRESS_FIXED &&
 300                 res->Data.Address16.Maximum == ACPI_ADDRESS_FIXED) {
 301
 302                 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) {
 303                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 304                                      "Address16/Memory 0x%x/%d\n",
 305                                      res->Data.Address16.Minimum,
 306                                      res->Data.Address16.AddressLength));
 307                     set->set_memory(dev, context,
 308                                     res->Data.Address16.Minimum,
 309                                     res->Data.Address16.AddressLength);
 310                 } else {
 311                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 312                                      "Address16/IO 0x%x/%d\n",
 313                                      res->Data.Address16.Minimum,
 314                                      res->Data.Address16.AddressLength));
 315                     set->set_ioport(dev, context,
 316                                     res->Data.Address16.Minimum,
 317                                     res->Data.Address16.AddressLength);
 318                 }
 319             } else {
 320                 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) {
 321                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 322                                      "Address16/Memory 0x%x-0x%x/%d\n",
 323                                      res->Data.Address16.Minimum,
 324                                      res->Data.Address16.Maximum,
 325                                      res->Data.Address16.AddressLength));
 326                     set->set_memoryrange(dev, context,
 327                                           res->Data.Address16.Minimum,
 328                                           res->Data.Address16.Maximum,
 329                                           res->Data.Address16.AddressLength,
 330                                           res->Data.Address16.Granularity);
 331                 } else {
 332                     ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 333                                      "Address16/IO 0x%x-0x%x/%d\n",
 334                                      res->Data.Address16.Minimum,
 335                                      res->Data.Address16.Maximum,
 336                                      res->Data.Address16.AddressLength));
 337                     set->set_iorange(dev, context,
 338                                      res->Data.Address16.Minimum,
 339                                      res->Data.Address16.Maximum,
 340                                      res->Data.Address16.AddressLength,
 341                                      res->Data.Address16.Granularity);
 342                 }
 343             }
 344             break;
 345         case ACPI_RESOURCE_TYPE_ADDRESS64:
 346             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 347                              "unimplemented Address64 resource\n"));
 348             break;
 349         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 350             /* XXX special handling? */
 351             set->set_ext_irq(dev, context, res->Data.ExtendedIrq.Interrupts,
 352                 res->Data.ExtendedIrq.InterruptCount,
 353                 res->Data.ExtendedIrq.Triggering,
 354                 res->Data.ExtendedIrq.Polarity);
 355             break;
 356         case ACPI_RESOURCE_TYPE_VENDOR:
 357             ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
 358                              "unimplemented VendorSpecific resource\n"));
 359             break;
 360         default:
 361             break;
 362         }
 363     }
 364
 365     AcpiOsFree(buf.Pointer);
 366     set->set_done(dev, context);
 367     return_ACPI_STATUS (AE_OK);
 368 }
 369
 370 /*
 371  * Resource-set vectors used to attach _CRS-derived resources
 372  * to an ACPI device.
 373  */
 374 static void     acpi_res_set_init(device_t dev, void *arg, void **context);
 375 static void     acpi_res_set_done(device_t dev, void *context);
 376 static void     acpi_res_set_ioport(device_t dev, void *context,
 377                                     u_int32_t base, u_int32_t length);
 378 static void     acpi_res_set_iorange(device_t dev, void *context,
 379                                      u_int32_t low, u_int32_t high,
 380                                      u_int32_t length, u_int32_t align);
 381 static void     acpi_res_set_memory(device_t dev, void *context,
 382                                     u_int32_t base, u_int32_t length);
 383 static void     acpi_res_set_memoryrange(device_t dev, void *context,
 384                                          u_int32_t low, u_int32_t high,
 385                                          u_int32_t length, u_int32_t align);
 386 static void     acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq,
 387                                  int count, int trig, int pol);
 388 static void     acpi_res_set_ext_irq(device_t dev, void *context,
 389                                      u_int32_t *irq, int count, int trig,
 390                                      int pol);
 391 static void     acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq,
 392                                  int count);
 393 static void     acpi_res_set_start_dependant(device_t dev, void *context,
 394                                              int preference);
 395 static void     acpi_res_set_end_dependant(device_t dev, void *context);
 396
 397 struct acpi_parse_resource_set acpi_res_parse_set = {
 398     acpi_res_set_init,
 399     acpi_res_set_done,
 400     acpi_res_set_ioport,
 401     acpi_res_set_iorange,
 402     acpi_res_set_memory,
 403     acpi_res_set_memoryrange,
 404     acpi_res_set_irq,
 405     acpi_res_set_ext_irq,
 406     acpi_res_set_drq,
 407     acpi_res_set_start_dependant,
 408     acpi_res_set_end_dependant
 409 };
 410
 411 struct acpi_res_context {
 412     int         ar_nio;
 413     int         ar_nmem;
 414     int         ar_nirq;
 415     int         ar_ndrq;
 416     void        *ar_parent;
 417 };
 418
 419 static void
 420 acpi_res_set_init(device_t dev, void *arg, void **context)
 421 {
 422     struct acpi_res_context     *cp;
 423
 424     if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) {
 425         bzero(cp, sizeof(*cp));
 426         cp->ar_parent = arg;
 427         *context = cp;
 428     }
 429 }
 430
 431 static void
 432 acpi_res_set_done(device_t dev, void *context)
 433 {
 434     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 435
 436     if (cp == NULL)
 437         return;
 438     AcpiOsFree(cp);
 439 }
 440
 441 static void
 442 acpi_res_set_ioport(device_t dev, void *context, u_int32_t base,
 443                     u_int32_t length)
 444 {
 445     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 446
 447     if (cp == NULL)
 448         return;
 449     bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length);
 450 }
 451
 452 static void
 453 acpi_res_set_iorange(device_t dev, void *context, u_int32_t low,
 454                      u_int32_t high, u_int32_t length, u_int32_t align)
 455 {
 456     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 457
 458     if (cp == NULL)
 459         return;
 460     device_printf(dev, "I/O range not supported\n");
 461 }
 462
 463 static void
 464 acpi_res_set_memory(device_t dev, void *context, u_int32_t base,
 465                     u_int32_t length)
 466 {
 467     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 468
 469     if (cp == NULL)
 470         return;
 471
 472     bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length);
 473 }
 474
 475 static void
 476 acpi_res_set_memoryrange(device_t dev, void *context, u_int32_t low,
 477                          u_int32_t high, u_int32_t length, u_int32_t align)
 478 {
 479     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 480
 481     if (cp == NULL)
 482         return;
 483     device_printf(dev, "memory range not supported\n");
 484 }
 485
 486 static void
 487 acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq, int count,
 488     int trig, int pol)
 489 {
 490     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 491
 492     if (cp == NULL || irq == NULL)
 493         return;
 494
 495     /* This implements no resource relocation. */
 496     if (count != 1)
 497         return;
 498
 499     bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1);
 500 #if 0   /* From FreeBSD-5 XXX */
 501     BUS_CONFIG_INTR(dev, *irq, (trig == ACPI_EDGE_SENSITIVE) ?
 502         INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ?
 503         INTR_POLARITY_HIGH : INTR_POLARITY_LOW);
 504 #endif
 505 }
 506
 507 static void
 508 acpi_res_set_ext_irq(device_t dev, void *context, u_int32_t *irq, int count,
 509     int trig, int pol)
 510 {
 511     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 512
 513     if (cp == NULL || irq == NULL)
 514         return;
 515
 516     /* This implements no resource relocation. */
 517     if (count != 1)
 518         return;
 519
 520     bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1);
 521 #if 0   /* From FreeBSD-5 XXX */
 522     BUS_CONFIG_INTR(dev, *irq, (trig == ACPI_EDGE_SENSITIVE) ?
 523         INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ?
 524         INTR_POLARITY_HIGH : INTR_POLARITY_LOW);
 525 #endif
 526 }
 527
 528 static void
 529 acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq, int count)
 530 {
 531     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 532
 533     if (cp == NULL || drq == NULL)
 534         return;
 535
 536     /* This implements no resource relocation. */
 537     if (count != 1)
 538         return;
 539
 540     bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1);
 541 }
 542
 543 static void
 544 acpi_res_set_start_dependant(device_t dev, void *context, int preference)
 545 {
 546     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 547
 548     if (cp == NULL)
 549         return;
 550     device_printf(dev, "dependent functions not supported\n");
 551 }
 552
 553 static void
 554 acpi_res_set_end_dependant(device_t dev, void *context)
 555 {
 556     struct acpi_res_context     *cp = (struct acpi_res_context *)context;
 557
 558     if (cp == NULL)
 559         return;
 560     device_printf(dev, "dependent functions not supported\n");
 561 }
 562
 563 /*
 564  * Resource-owning placeholders.
 565  *
 566  * This code "owns" system resource objects that aren't
 567  * otherwise useful to devices, and which shouldn't be
 568  * considered "free".
 569  *
 570  * Note that some systems claim *all* of the physical address space
 571  * with a PNP0C01 device, so we cannot correctly "own" system memory
 572  * here (must be done in the SMAP handler on x86 systems, for
 573  * example).
 574  */
 575
 576 static int      acpi_sysresource_probe(device_t dev);
 577 static int      acpi_sysresource_attach(device_t dev);
 578
 579 static device_method_t acpi_sysresource_methods[] = {
 580     /* Device interface */
 581     DEVMETHOD(device_probe,     acpi_sysresource_probe),
 582     DEVMETHOD(device_attach,    acpi_sysresource_attach),
 583
 584     {0, 0}
 585 };
 586
 587 static driver_t acpi_sysresource_driver = {
 588     "acpi_sysresource",
 589     acpi_sysresource_methods,
 590     0,
 591 };
 592
 593 static devclass_t acpi_sysresource_devclass;
 594 DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysresource_driver,
 595               acpi_sysresource_devclass, 0, 0);
 596 MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1);
 597
 598 static int
 599 acpi_sysresource_probe(device_t dev)
 600 {
 601     if (!acpi_disabled("sysresource") && acpi_MatchHid(dev, "PNP0C02"))
 602         device_set_desc(dev, "System Resource");
 603     else
 604         return (ENXIO);
 605
 606     device_quiet(dev);
 607     return (-100);
 608 }
 609
 610 static int
 611 acpi_sysresource_attach(device_t dev)
 612 {
 613     struct resource     *res;
 614     int                 i, rid;
 615
 616     /*
 617      * Suck up all the resources that might have been assigned to us.
 618      * Note that it's impossible to tell the difference between a
 619      * resource that someone else has claimed, and one that doesn't
 620      * exist.
 621      */
 622     for (i = 0; i < 100; i++) {
 623         rid = i;
 624         res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 0);
 625         rid = i;
 626         res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 0);
 627         rid = i;
 628         res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE);
 629     }
 630
 631     return (0);
 632 }