root/drivers/acpi/acpica/dbnames.c

DEFINITIONS

1. acpi_db_set_scope
2. acpi_db_dump_namespace
3. acpi_db_dump_namespace_paths
4. acpi_db_dump_namespace_by_owner
5. acpi_db_walk_and_match_name
6. acpi_db_find_name_in_namespace
7. acpi_db_walk_for_predefined_names
8. acpi_db_check_predefined_names
9. acpi_db_walk_for_object_counts
10. acpi_db_walk_for_specific_objects
11. acpi_db_display_objects
12. acpi_db_integrity_walk
13. acpi_db_check_integrity
14. acpi_db_walk_for_references
15. acpi_db_find_references
16. acpi_db_bus_walk
17. acpi_db_get_bus_info

   1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
   2 /*******************************************************************************
   3  *
   4  * Module Name: dbnames - Debugger commands for the acpi namespace
   5  *
   6  ******************************************************************************/
   7 
   8 #include <acpi/acpi.h>
   9 #include "accommon.h"
  10 #include "acnamesp.h"
  11 #include "acdebug.h"
  12 #include "acpredef.h"
  13 
  14 #define _COMPONENT          ACPI_CA_DEBUGGER
  15 ACPI_MODULE_NAME("dbnames")
  16 
  17 /* Local prototypes */
  18 static acpi_status
  19 acpi_db_walk_and_match_name(acpi_handle obj_handle,
  20                             u32 nesting_level,
  21                             void *context, void **return_value);
  22 
  23 static acpi_status
  24 acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
  25                                   u32 nesting_level,
  26                                   void *context, void **return_value);
  27 
  28 static acpi_status
  29 acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
  30                                   u32 nesting_level,
  31                                   void *context, void **return_value);
  32 
  33 static acpi_status
  34 acpi_db_walk_for_object_counts(acpi_handle obj_handle,
  35                                u32 nesting_level,
  36                                void *context, void **return_value);
  37 
  38 static acpi_status
  39 acpi_db_integrity_walk(acpi_handle obj_handle,
  40                        u32 nesting_level, void *context, void **return_value);
  41 
  42 static acpi_status
  43 acpi_db_walk_for_references(acpi_handle obj_handle,
  44                             u32 nesting_level,
  45                             void *context, void **return_value);
  46 
  47 static acpi_status
  48 acpi_db_bus_walk(acpi_handle obj_handle,
  49                  u32 nesting_level, void *context, void **return_value);
  50 
  51 /*
  52  * Arguments for the Objects command
  53  * These object types map directly to the ACPI_TYPES
  54  */
  55 static struct acpi_db_argument_info acpi_db_object_types[] = {
  56         {"ANY"},
  57         {"INTEGERS"},
  58         {"STRINGS"},
  59         {"BUFFERS"},
  60         {"PACKAGES"},
  61         {"FIELDS"},
  62         {"DEVICES"},
  63         {"EVENTS"},
  64         {"METHODS"},
  65         {"MUTEXES"},
  66         {"REGIONS"},
  67         {"POWERRESOURCES"},
  68         {"PROCESSORS"},
  69         {"THERMALZONES"},
  70         {"BUFFERFIELDS"},
  71         {"DDBHANDLES"},
  72         {"DEBUG"},
  73         {"REGIONFIELDS"},
  74         {"BANKFIELDS"},
  75         {"INDEXFIELDS"},
  76         {"REFERENCES"},
  77         {"ALIASES"},
  78         {"METHODALIASES"},
  79         {"NOTIFY"},
  80         {"ADDRESSHANDLER"},
  81         {"RESOURCE"},
  82         {"RESOURCEFIELD"},
  83         {"SCOPES"},
  84         {NULL}                  /* Must be null terminated */
  85 };
  86 
  87 /*******************************************************************************
  88  *
  89  * FUNCTION:    acpi_db_set_scope
  90  *
  91  * PARAMETERS:  name                - New scope path
  92  *
  93  * RETURN:      Status
  94  *
  95  * DESCRIPTION: Set the "current scope" as maintained by this utility.
  96  *              The scope is used as a prefix to ACPI paths.
  97  *
  98  ******************************************************************************/
  99 
 100 void acpi_db_set_scope(char *name)
 101 {
 102         acpi_status status;
 103         struct acpi_namespace_node *node;
 104 
 105         if (!name || name[0] == 0) {
 106                 acpi_os_printf("Current scope: %s\n", acpi_gbl_db_scope_buf);
 107                 return;
 108         }
 109 
 110         acpi_db_prep_namestring(name);
 111 
 112         if (ACPI_IS_ROOT_PREFIX(name[0])) {
 113 
 114                 /* Validate new scope from the root */
 115 
 116                 status = acpi_ns_get_node(acpi_gbl_root_node, name,
 117                                           ACPI_NS_NO_UPSEARCH, &node);
 118                 if (ACPI_FAILURE(status)) {
 119                         goto error_exit;
 120                 }
 121 
 122                 acpi_gbl_db_scope_buf[0] = 0;
 123         } else {
 124                 /* Validate new scope relative to old scope */
 125 
 126                 status = acpi_ns_get_node(acpi_gbl_db_scope_node, name,
 127                                           ACPI_NS_NO_UPSEARCH, &node);
 128                 if (ACPI_FAILURE(status)) {
 129                         goto error_exit;
 130                 }
 131         }
 132 
 133         /* Build the final pathname */
 134 
 135         if (acpi_ut_safe_strcat
 136             (acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), name)) {
 137                 status = AE_BUFFER_OVERFLOW;
 138                 goto error_exit;
 139         }
 140 
 141         if (acpi_ut_safe_strcat
 142             (acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), "\\")) {
 143                 status = AE_BUFFER_OVERFLOW;
 144                 goto error_exit;
 145         }
 146 
 147         acpi_gbl_db_scope_node = node;
 148         acpi_os_printf("New scope: %s\n", acpi_gbl_db_scope_buf);
 149         return;
 150 
 151 error_exit:
 152 
 153         acpi_os_printf("Could not attach scope: %s, %s\n",
 154                        name, acpi_format_exception(status));
 155 }
 156 
 157 /*******************************************************************************
 158  *
 159  * FUNCTION:    acpi_db_dump_namespace
 160  *
 161  * PARAMETERS:  start_arg       - Node to begin namespace dump
 162  *              depth_arg       - Maximum tree depth to be dumped
 163  *
 164  * RETURN:      None
 165  *
 166  * DESCRIPTION: Dump entire namespace or a subtree. Each node is displayed
 167  *              with type and other information.
 168  *
 169  ******************************************************************************/
 170 
 171 void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
 172 {
 173         acpi_handle subtree_entry = acpi_gbl_root_node;
 174         u32 max_depth = ACPI_UINT32_MAX;
 175 
 176         /* No argument given, just start at the root and dump entire namespace */
 177 
 178         if (start_arg) {
 179                 subtree_entry = acpi_db_convert_to_node(start_arg);
 180                 if (!subtree_entry) {
 181                         return;
 182                 }
 183 
 184                 /* Now we can check for the depth argument */
 185 
 186                 if (depth_arg) {
 187                         max_depth = strtoul(depth_arg, NULL, 0);
 188                 }
 189         }
 190 
 191         acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
 192 
 193         if (((struct acpi_namespace_node *)subtree_entry)->parent) {
 194                 acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
 195                                ((struct acpi_namespace_node *)subtree_entry)->
 196                                name.ascii, subtree_entry);
 197         } else {
 198                 acpi_os_printf("ACPI Namespace (from %s):\n",
 199                                ACPI_NAMESPACE_ROOT);
 200         }
 201 
 202         /* Display the subtree */
 203 
 204         acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
 205         acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
 206                              ACPI_OWNER_ID_MAX, subtree_entry);
 207         acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
 208 }
 209 
 210 /*******************************************************************************
 211  *
 212  * FUNCTION:    acpi_db_dump_namespace_paths
 213  *
 214  * PARAMETERS:  None
 215  *
 216  * RETURN:      None
 217  *
 218  * DESCRIPTION: Dump entire namespace with full object pathnames and object
 219  *              type information. Alternative to "namespace" command.
 220  *
 221  ******************************************************************************/
 222 
 223 void acpi_db_dump_namespace_paths(void)
 224 {
 225 
 226         acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
 227         acpi_os_printf("ACPI Namespace (from root):\n");
 228 
 229         /* Display the entire namespace */
 230 
 231         acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
 232         acpi_ns_dump_object_paths(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY,
 233                                   ACPI_UINT32_MAX, ACPI_OWNER_ID_MAX,
 234                                   acpi_gbl_root_node);
 235 
 236         acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
 237 }
 238 
 239 /*******************************************************************************
 240  *
 241  * FUNCTION:    acpi_db_dump_namespace_by_owner
 242  *
 243  * PARAMETERS:  owner_arg       - Owner ID whose nodes will be displayed
 244  *              depth_arg       - Maximum tree depth to be dumped
 245  *
 246  * RETURN:      None
 247  *
 248  * DESCRIPTION: Dump elements of the namespace that are owned by the owner_id.
 249  *
 250  ******************************************************************************/
 251 
 252 void acpi_db_dump_namespace_by_owner(char *owner_arg, char *depth_arg)
 253 {
 254         acpi_handle subtree_entry = acpi_gbl_root_node;
 255         u32 max_depth = ACPI_UINT32_MAX;
 256         acpi_owner_id owner_id;
 257 
 258         owner_id = (acpi_owner_id)strtoul(owner_arg, NULL, 0);
 259 
 260         /* Now we can check for the depth argument */
 261 
 262         if (depth_arg) {
 263                 max_depth = strtoul(depth_arg, NULL, 0);
 264         }
 265 
 266         acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
 267         acpi_os_printf("ACPI Namespace by owner %X:\n", owner_id);
 268 
 269         /* Display the subtree */
 270 
 271         acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
 272         acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
 273                              owner_id, subtree_entry);
 274         acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
 275 }
 276 
 277 /*******************************************************************************
 278  *
 279  * FUNCTION:    acpi_db_walk_and_match_name
 280  *
 281  * PARAMETERS:  Callback from walk_namespace
 282  *
 283  * RETURN:      Status
 284  *
 285  * DESCRIPTION: Find a particular name/names within the namespace. Wildcards
 286  *              are supported -- '?' matches any character.
 287  *
 288  ******************************************************************************/
 289 
 290 static acpi_status
 291 acpi_db_walk_and_match_name(acpi_handle obj_handle,
 292                             u32 nesting_level,
 293                             void *context, void **return_value)
 294 {
 295         acpi_status status;
 296         char *requested_name = (char *)context;
 297         u32 i;
 298         struct acpi_buffer buffer;
 299         struct acpi_walk_info info;
 300 
 301         /* Check for a name match */
 302 
 303         for (i = 0; i < 4; i++) {
 304 
 305                 /* Wildcard support */
 306 
 307                 if ((requested_name[i] != '?') &&
 308                     (requested_name[i] != ((struct acpi_namespace_node *)
 309                                            obj_handle)->name.ascii[i])) {
 310 
 311                         /* No match, just exit */
 312 
 313                         return (AE_OK);
 314                 }
 315         }
 316 
 317         /* Get the full pathname to this object */
 318 
 319         buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 320         status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
 321         if (ACPI_FAILURE(status)) {
 322                 acpi_os_printf("Could Not get pathname for object %p\n",
 323                                obj_handle);
 324         } else {
 325                 info.count = 0;
 326                 info.owner_id = ACPI_OWNER_ID_MAX;
 327                 info.debug_level = ACPI_UINT32_MAX;
 328                 info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
 329 
 330                 acpi_os_printf("%32s", (char *)buffer.pointer);
 331                 (void)acpi_ns_dump_one_object(obj_handle, nesting_level, &info,
 332                                               NULL);
 333                 ACPI_FREE(buffer.pointer);
 334         }
 335 
 336         return (AE_OK);
 337 }
 338 
 339 /*******************************************************************************
 340  *
 341  * FUNCTION:    acpi_db_find_name_in_namespace
 342  *
 343  * PARAMETERS:  name_arg        - The 4-character ACPI name to find.
 344  *                                wildcards are supported.
 345  *
 346  * RETURN:      None
 347  *
 348  * DESCRIPTION: Search the namespace for a given name (with wildcards)
 349  *
 350  ******************************************************************************/
 351 
 352 acpi_status acpi_db_find_name_in_namespace(char *name_arg)
 353 {
 354         char acpi_name[5] = "____";
 355         char *acpi_name_ptr = acpi_name;
 356 
 357         if (strlen(name_arg) > ACPI_NAMESEG_SIZE) {
 358                 acpi_os_printf("Name must be no longer than 4 characters\n");
 359                 return (AE_OK);
 360         }
 361 
 362         /* Pad out name with underscores as necessary to create a 4-char name */
 363 
 364         acpi_ut_strupr(name_arg);
 365         while (*name_arg) {
 366                 *acpi_name_ptr = *name_arg;
 367                 acpi_name_ptr++;
 368                 name_arg++;
 369         }
 370 
 371         /* Walk the namespace from the root */
 372 
 373         (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 374                                   ACPI_UINT32_MAX, acpi_db_walk_and_match_name,
 375                                   NULL, acpi_name, NULL);
 376 
 377         acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
 378         return (AE_OK);
 379 }
 380 
 381 /*******************************************************************************
 382  *
 383  * FUNCTION:    acpi_db_walk_for_predefined_names
 384  *
 385  * PARAMETERS:  Callback from walk_namespace
 386  *
 387  * RETURN:      Status
 388  *
 389  * DESCRIPTION: Detect and display predefined ACPI names (names that start with
 390  *              an underscore)
 391  *
 392  ******************************************************************************/
 393 
 394 static acpi_status
 395 acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
 396                                   u32 nesting_level,
 397                                   void *context, void **return_value)
 398 {
 399         struct acpi_namespace_node *node =
 400             (struct acpi_namespace_node *)obj_handle;
 401         u32 *count = (u32 *)context;
 402         const union acpi_predefined_info *predefined;
 403         const union acpi_predefined_info *package = NULL;
 404         char *pathname;
 405         char string_buffer[48];
 406 
 407         predefined = acpi_ut_match_predefined_method(node->name.ascii);
 408         if (!predefined) {
 409                 return (AE_OK);
 410         }
 411 
 412         pathname = acpi_ns_get_normalized_pathname(node, TRUE);
 413         if (!pathname) {
 414                 return (AE_OK);
 415         }
 416 
 417         /* If method returns a package, the info is in the next table entry */
 418 
 419         if (predefined->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
 420                 package = predefined + 1;
 421         }
 422 
 423         acpi_ut_get_expected_return_types(string_buffer,
 424                                           predefined->info.expected_btypes);
 425 
 426         acpi_os_printf("%-32s Arguments %X, Return Types: %s", pathname,
 427                        METHOD_GET_ARG_COUNT(predefined->info.argument_list),
 428                        string_buffer);
 429 
 430         if (package) {
 431                 acpi_os_printf(" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
 432                                package->ret_info.type,
 433                                package->ret_info.object_type1,
 434                                package->ret_info.count1);
 435         }
 436 
 437         acpi_os_printf("\n");
 438 
 439         /* Check that the declared argument count matches the ACPI spec */
 440 
 441         acpi_ns_check_acpi_compliance(pathname, node, predefined);
 442 
 443         ACPI_FREE(pathname);
 444         (*count)++;
 445         return (AE_OK);
 446 }
 447 
 448 /*******************************************************************************
 449  *
 450  * FUNCTION:    acpi_db_check_predefined_names
 451  *
 452  * PARAMETERS:  None
 453  *
 454  * RETURN:      None
 455  *
 456  * DESCRIPTION: Validate all predefined names in the namespace
 457  *
 458  ******************************************************************************/
 459 
 460 void acpi_db_check_predefined_names(void)
 461 {
 462         u32 count = 0;
 463 
 464         /* Search all nodes in namespace */
 465 
 466         (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 467                                   ACPI_UINT32_MAX,
 468                                   acpi_db_walk_for_predefined_names, NULL,
 469                                   (void *)&count, NULL);
 470 
 471         acpi_os_printf("Found %u predefined names in the namespace\n", count);
 472 }
 473 
 474 /*******************************************************************************
 475  *
 476  * FUNCTION:    acpi_db_walk_for_object_counts
 477  *
 478  * PARAMETERS:  Callback from walk_namespace
 479  *
 480  * RETURN:      Status
 481  *
 482  * DESCRIPTION: Display short info about objects in the namespace
 483  *
 484  ******************************************************************************/
 485 
 486 static acpi_status
 487 acpi_db_walk_for_object_counts(acpi_handle obj_handle,
 488                                u32 nesting_level,
 489                                void *context, void **return_value)
 490 {
 491         struct acpi_object_info *info = (struct acpi_object_info *)context;
 492         struct acpi_namespace_node *node =
 493             (struct acpi_namespace_node *)obj_handle;
 494 
 495         if (node->type > ACPI_TYPE_NS_NODE_MAX) {
 496                 acpi_os_printf("[%4.4s]: Unknown object type %X\n",
 497                                node->name.ascii, node->type);
 498         } else {
 499                 info->types[node->type]++;
 500         }
 501 
 502         return (AE_OK);
 503 }
 504 
 505 /*******************************************************************************
 506  *
 507  * FUNCTION:    acpi_db_walk_for_specific_objects
 508  *
 509  * PARAMETERS:  Callback from walk_namespace
 510  *
 511  * RETURN:      Status
 512  *
 513  * DESCRIPTION: Display short info about objects in the namespace
 514  *
 515  ******************************************************************************/
 516 
 517 static acpi_status
 518 acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
 519                                   u32 nesting_level,
 520                                   void *context, void **return_value)
 521 {
 522         struct acpi_walk_info *info = (struct acpi_walk_info *)context;
 523         struct acpi_buffer buffer;
 524         acpi_status status;
 525 
 526         info->count++;
 527 
 528         /* Get and display the full pathname to this object */
 529 
 530         buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 531         status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
 532         if (ACPI_FAILURE(status)) {
 533                 acpi_os_printf("Could Not get pathname for object %p\n",
 534                                obj_handle);
 535                 return (AE_OK);
 536         }
 537 
 538         acpi_os_printf("%32s", (char *)buffer.pointer);
 539         ACPI_FREE(buffer.pointer);
 540 
 541         /* Dump short info about the object */
 542 
 543         (void)acpi_ns_dump_one_object(obj_handle, nesting_level, info, NULL);
 544         return (AE_OK);
 545 }
 546 
 547 /*******************************************************************************
 548  *
 549  * FUNCTION:    acpi_db_display_objects
 550  *
 551  * PARAMETERS:  obj_type_arg        - Type of object to display
 552  *              display_count_arg   - Max depth to display
 553  *
 554  * RETURN:      None
 555  *
 556  * DESCRIPTION: Display objects in the namespace of the requested type
 557  *
 558  ******************************************************************************/
 559 
 560 acpi_status acpi_db_display_objects(char *obj_type_arg, char *display_count_arg)
 561 {
 562         struct acpi_walk_info info;
 563         acpi_object_type type;
 564         struct acpi_object_info *object_info;
 565         u32 i;
 566         u32 total_objects = 0;
 567 
 568         /* No argument means display summary/count of all object types */
 569 
 570         if (!obj_type_arg) {
 571                 object_info =
 572                     ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_object_info));
 573 
 574                 /* Walk the namespace from the root */
 575 
 576                 (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 577                                           ACPI_UINT32_MAX,
 578                                           acpi_db_walk_for_object_counts, NULL,
 579                                           (void *)object_info, NULL);
 580 
 581                 acpi_os_printf("\nSummary of namespace objects:\n\n");
 582 
 583                 for (i = 0; i < ACPI_TOTAL_TYPES; i++) {
 584                         acpi_os_printf("%8u %s\n", object_info->types[i],
 585                                        acpi_ut_get_type_name(i));
 586 
 587                         total_objects += object_info->types[i];
 588                 }
 589 
 590                 acpi_os_printf("\n%8u Total namespace objects\n\n",
 591                                total_objects);
 592 
 593                 ACPI_FREE(object_info);
 594                 return (AE_OK);
 595         }
 596 
 597         /* Get the object type */
 598 
 599         type = acpi_db_match_argument(obj_type_arg, acpi_db_object_types);
 600         if (type == ACPI_TYPE_NOT_FOUND) {
 601                 acpi_os_printf("Invalid or unsupported argument\n");
 602                 return (AE_OK);
 603         }
 604 
 605         acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
 606         acpi_os_printf
 607             ("Objects of type [%s] defined in the current ACPI Namespace:\n",
 608              acpi_ut_get_type_name(type));
 609 
 610         acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
 611 
 612         info.count = 0;
 613         info.owner_id = ACPI_OWNER_ID_MAX;
 614         info.debug_level = ACPI_UINT32_MAX;
 615         info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
 616 
 617         /* Walk the namespace from the root */
 618 
 619         (void)acpi_walk_namespace(type, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
 620                                   acpi_db_walk_for_specific_objects, NULL,
 621                                   (void *)&info, NULL);
 622 
 623         acpi_os_printf
 624             ("\nFound %u objects of type [%s] in the current ACPI Namespace\n",
 625              info.count, acpi_ut_get_type_name(type));
 626 
 627         acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
 628         return (AE_OK);
 629 }
 630 
 631 /*******************************************************************************
 632  *
 633  * FUNCTION:    acpi_db_integrity_walk
 634  *
 635  * PARAMETERS:  Callback from walk_namespace
 636  *
 637  * RETURN:      Status
 638  *
 639  * DESCRIPTION: Examine one NS node for valid values.
 640  *
 641  ******************************************************************************/
 642 
 643 static acpi_status
 644 acpi_db_integrity_walk(acpi_handle obj_handle,
 645                        u32 nesting_level, void *context, void **return_value)
 646 {
 647         struct acpi_integrity_info *info =
 648             (struct acpi_integrity_info *)context;
 649         struct acpi_namespace_node *node =
 650             (struct acpi_namespace_node *)obj_handle;
 651         union acpi_operand_object *object;
 652         u8 alias = TRUE;
 653 
 654         info->nodes++;
 655 
 656         /* Verify the NS node, and dereference aliases */
 657 
 658         while (alias) {
 659                 if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
 660                         acpi_os_printf
 661                             ("Invalid Descriptor Type for Node %p [%s] - "
 662                              "is %2.2X should be %2.2X\n", node,
 663                              acpi_ut_get_descriptor_name(node),
 664                              ACPI_GET_DESCRIPTOR_TYPE(node),
 665                              ACPI_DESC_TYPE_NAMED);
 666                         return (AE_OK);
 667                 }
 668 
 669                 if ((node->type == ACPI_TYPE_LOCAL_ALIAS) ||
 670                     (node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
 671                         node = (struct acpi_namespace_node *)node->object;
 672                 } else {
 673                         alias = FALSE;
 674                 }
 675         }
 676 
 677         if (node->type > ACPI_TYPE_LOCAL_MAX) {
 678                 acpi_os_printf("Invalid Object Type for Node %p, Type = %X\n",
 679                                node, node->type);
 680                 return (AE_OK);
 681         }
 682 
 683         if (!acpi_ut_valid_nameseg(node->name.ascii)) {
 684                 acpi_os_printf("Invalid AcpiName for Node %p\n", node);
 685                 return (AE_OK);
 686         }
 687 
 688         object = acpi_ns_get_attached_object(node);
 689         if (object) {
 690                 info->objects++;
 691                 if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
 692                         acpi_os_printf
 693                             ("Invalid Descriptor Type for Object %p [%s]\n",
 694                              object, acpi_ut_get_descriptor_name(object));
 695                 }
 696         }
 697 
 698         return (AE_OK);
 699 }
 700 
 701 /*******************************************************************************
 702  *
 703  * FUNCTION:    acpi_db_check_integrity
 704  *
 705  * PARAMETERS:  None
 706  *
 707  * RETURN:      None
 708  *
 709  * DESCRIPTION: Check entire namespace for data structure integrity
 710  *
 711  ******************************************************************************/
 712 
 713 void acpi_db_check_integrity(void)
 714 {
 715         struct acpi_integrity_info info = { 0, 0 };
 716 
 717         /* Search all nodes in namespace */
 718 
 719         (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 720                                   ACPI_UINT32_MAX, acpi_db_integrity_walk, NULL,
 721                                   (void *)&info, NULL);
 722 
 723         acpi_os_printf("Verified %u namespace nodes with %u Objects\n",
 724                        info.nodes, info.objects);
 725 }
 726 
 727 /*******************************************************************************
 728  *
 729  * FUNCTION:    acpi_db_walk_for_references
 730  *
 731  * PARAMETERS:  Callback from walk_namespace
 732  *
 733  * RETURN:      Status
 734  *
 735  * DESCRIPTION: Check if this namespace object refers to the target object
 736  *              that is passed in as the context value.
 737  *
 738  * Note: Currently doesn't check subobjects within the Node's object
 739  *
 740  ******************************************************************************/
 741 
 742 static acpi_status
 743 acpi_db_walk_for_references(acpi_handle obj_handle,
 744                             u32 nesting_level,
 745                             void *context, void **return_value)
 746 {
 747         union acpi_operand_object *obj_desc =
 748             (union acpi_operand_object *)context;
 749         struct acpi_namespace_node *node =
 750             (struct acpi_namespace_node *)obj_handle;
 751 
 752         /* Check for match against the namespace node itself */
 753 
 754         if (node == (void *)obj_desc) {
 755                 acpi_os_printf("Object is a Node [%4.4s]\n",
 756                                acpi_ut_get_node_name(node));
 757         }
 758 
 759         /* Check for match against the object attached to the node */
 760 
 761         if (acpi_ns_get_attached_object(node) == obj_desc) {
 762                 acpi_os_printf("Reference at Node->Object %p [%4.4s]\n",
 763                                node, acpi_ut_get_node_name(node));
 764         }
 765 
 766         return (AE_OK);
 767 }
 768 
 769 /*******************************************************************************
 770  *
 771  * FUNCTION:    acpi_db_find_references
 772  *
 773  * PARAMETERS:  object_arg      - String with hex value of the object
 774  *
 775  * RETURN:      None
 776  *
 777  * DESCRIPTION: Search namespace for all references to the input object
 778  *
 779  ******************************************************************************/
 780 
 781 void acpi_db_find_references(char *object_arg)
 782 {
 783         union acpi_operand_object *obj_desc;
 784         acpi_size address;
 785 
 786         /* Convert string to object pointer */
 787 
 788         address = strtoul(object_arg, NULL, 16);
 789         obj_desc = ACPI_TO_POINTER(address);
 790 
 791         /* Search all nodes in namespace */
 792 
 793         (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 794                                   ACPI_UINT32_MAX, acpi_db_walk_for_references,
 795                                   NULL, (void *)obj_desc, NULL);
 796 }
 797 
 798 /*******************************************************************************
 799  *
 800  * FUNCTION:    acpi_db_bus_walk
 801  *
 802  * PARAMETERS:  Callback from walk_namespace
 803  *
 804  * RETURN:      Status
 805  *
 806  * DESCRIPTION: Display info about device objects that have a corresponding
 807  *              _PRT method.
 808  *
 809  ******************************************************************************/
 810 
 811 static acpi_status
 812 acpi_db_bus_walk(acpi_handle obj_handle,
 813                  u32 nesting_level, void *context, void **return_value)
 814 {
 815         struct acpi_namespace_node *node =
 816             (struct acpi_namespace_node *)obj_handle;
 817         acpi_status status;
 818         struct acpi_buffer buffer;
 819         struct acpi_namespace_node *temp_node;
 820         struct acpi_device_info *info;
 821         u32 i;
 822 
 823         if ((node->type != ACPI_TYPE_DEVICE) &&
 824             (node->type != ACPI_TYPE_PROCESSOR)) {
 825                 return (AE_OK);
 826         }
 827 
 828         /* Exit if there is no _PRT under this device */
 829 
 830         status = acpi_get_handle(node, METHOD_NAME__PRT,
 831                                  ACPI_CAST_PTR(acpi_handle, &temp_node));
 832         if (ACPI_FAILURE(status)) {
 833                 return (AE_OK);
 834         }
 835 
 836         /* Get the full path to this device object */
 837 
 838         buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 839         status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
 840         if (ACPI_FAILURE(status)) {
 841                 acpi_os_printf("Could Not get pathname for object %p\n",
 842                                obj_handle);
 843                 return (AE_OK);
 844         }
 845 
 846         status = acpi_get_object_info(obj_handle, &info);
 847         if (ACPI_FAILURE(status)) {
 848                 return (AE_OK);
 849         }
 850 
 851         /* Display the full path */
 852 
 853         acpi_os_printf("%-32s Type %X", (char *)buffer.pointer, node->type);
 854         ACPI_FREE(buffer.pointer);
 855 
 856         if (info->flags & ACPI_PCI_ROOT_BRIDGE) {
 857                 acpi_os_printf(" - Is PCI Root Bridge");
 858         }
 859         acpi_os_printf("\n");
 860 
 861         /* _PRT info */
 862 
 863         acpi_os_printf("_PRT: %p\n", temp_node);
 864 
 865         /* Dump _ADR, _HID, _UID, _CID */
 866 
 867         if (info->valid & ACPI_VALID_ADR) {
 868                 acpi_os_printf("_ADR: %8.8X%8.8X\n",
 869                                ACPI_FORMAT_UINT64(info->address));
 870         } else {
 871                 acpi_os_printf("_ADR: <Not Present>\n");
 872         }
 873 
 874         if (info->valid & ACPI_VALID_HID) {
 875                 acpi_os_printf("_HID: %s\n", info->hardware_id.string);
 876         } else {
 877                 acpi_os_printf("_HID: <Not Present>\n");
 878         }
 879 
 880         if (info->valid & ACPI_VALID_UID) {
 881                 acpi_os_printf("_UID: %s\n", info->unique_id.string);
 882         } else {
 883                 acpi_os_printf("_UID: <Not Present>\n");
 884         }
 885 
 886         if (info->valid & ACPI_VALID_CID) {
 887                 for (i = 0; i < info->compatible_id_list.count; i++) {
 888                         acpi_os_printf("_CID: %s\n",
 889                                        info->compatible_id_list.ids[i].string);
 890                 }
 891         } else {
 892                 acpi_os_printf("_CID: <Not Present>\n");
 893         }
 894 
 895         ACPI_FREE(info);
 896         return (AE_OK);
 897 }
 898 
 899 /*******************************************************************************
 900  *
 901  * FUNCTION:    acpi_db_get_bus_info
 902  *
 903  * PARAMETERS:  None
 904  *
 905  * RETURN:      None
 906  *
 907  * DESCRIPTION: Display info about system buses.
 908  *
 909  ******************************************************************************/
 910 
 911 void acpi_db_get_bus_info(void)
 912 {
 913         /* Search all nodes in namespace */
 914 
 915         (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 916                                   ACPI_UINT32_MAX, acpi_db_bus_walk, NULL, NULL,
 917                                   NULL);
 918 }