drivers/acpi/utilities/utglobal.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utglobal - Global variables for the ACPI subsystem
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2006, R. Byron Moore
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #define DEFINE_ACPI_GLOBALS
  45
  46 #include <acpi/acpi.h>
  47 #include <acpi/acnamesp.h>
  48
  49 ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
  50 #define _COMPONENT          ACPI_UTILITIES
  51     ACPI_MODULE_NAME("utglobal")
  52
  53 /*******************************************************************************
  54  *
  55  * FUNCTION:    acpi_format_exception
  56  *
  57  * PARAMETERS:  Status       - The acpi_status code to be formatted
  58  *
  59  * RETURN:      A string containing the exception text. A valid pointer is
  60  *              always returned.
  61  *
  62  * DESCRIPTION: This function translates an ACPI exception into an ASCII string.
  63  *
  64  ******************************************************************************/
  65 const char *acpi_format_exception(acpi_status status)
  66 {
  67         acpi_status sub_status;
  68         const char *exception = NULL;
  69
  70         ACPI_FUNCTION_ENTRY();
  71
  72         /*
  73          * Status is composed of two parts, a "type" and an actual code
  74          */
  75         sub_status = (status & ~AE_CODE_MASK);
  76
  77         switch (status & AE_CODE_MASK) {
  78         case AE_CODE_ENVIRONMENTAL:
  79
  80                 if (sub_status <= AE_CODE_ENV_MAX) {
  81                         exception = acpi_gbl_exception_names_env[sub_status];
  82                 }
  83                 break;
  84
  85         case AE_CODE_PROGRAMMER:
  86
  87                 if (sub_status <= AE_CODE_PGM_MAX) {
  88                         exception =
  89                             acpi_gbl_exception_names_pgm[sub_status - 1];
  90                 }
  91                 break;
  92
  93         case AE_CODE_ACPI_TABLES:
  94
  95                 if (sub_status <= AE_CODE_TBL_MAX) {
  96                         exception =
  97                             acpi_gbl_exception_names_tbl[sub_status - 1];
  98                 }
  99                 break;
 100
 101         case AE_CODE_AML:
 102
 103                 if (sub_status <= AE_CODE_AML_MAX) {
 104                         exception =
 105                             acpi_gbl_exception_names_aml[sub_status - 1];
 106                 }
 107                 break;
 108
 109         case AE_CODE_CONTROL:
 110
 111                 if (sub_status <= AE_CODE_CTRL_MAX) {
 112                         exception =
 113                             acpi_gbl_exception_names_ctrl[sub_status - 1];
 114                 }
 115                 break;
 116
 117         default:
 118                 break;
 119         }
 120
 121         if (!exception) {
 122
 123                 /* Exception code was not recognized */
 124
 125                 ACPI_ERROR((AE_INFO,
 126                             "Unknown exception code: 0x%8.8X", status));
 127
 128                 exception = "UNKNOWN_STATUS_CODE";
 129         }
 130
 131         return (ACPI_CAST_PTR(const char, exception));
 132 }
 133
 134 /*******************************************************************************
 135  *
 136  * Static global variable initialization.
 137  *
 138  ******************************************************************************/
 139
 140 /*
 141  * We want the debug switches statically initialized so they
 142  * are already set when the debugger is entered.
 143  */
 144
 145 /* Debug switch - level and trace mask */
 146 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
 147
 148 /* Debug switch - layer (component) mask */
 149
 150 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
 151 u32 acpi_gbl_nesting_level = 0;
 152
 153 /* Debugger globals */
 154
 155 u8 acpi_gbl_db_terminate_threads = FALSE;
 156 u8 acpi_gbl_abort_method = FALSE;
 157 u8 acpi_gbl_method_executing = FALSE;
 158
 159 /* System flags */
 160
 161 u32 acpi_gbl_startup_flags = 0;
 162
 163 /* System starts uninitialized */
 164
 165 u8 acpi_gbl_shutdown = TRUE;
 166
 167 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
 168         "\\_S0_",
 169         "\\_S1_",
 170         "\\_S2_",
 171         "\\_S3_",
 172         "\\_S4_",
 173         "\\_S5_"
 174 };
 175
 176 const char *acpi_gbl_highest_dstate_names[4] = {
 177         "_S1D",
 178         "_S2D",
 179         "_S3D",
 180         "_S4D"
 181 };
 182
 183 /*******************************************************************************
 184  *
 185  * Namespace globals
 186  *
 187  ******************************************************************************/
 188
 189 /*
 190  * Predefined ACPI Names (Built-in to the Interpreter)
 191  *
 192  * NOTES:
 193  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 194  *    during the initialization sequence.
 195  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 196  *    perform a Notify() operation on it.
 197  */
 198 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 199         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 200         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 201         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 202         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 203         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
 204         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 205         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 206         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 207
 208 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 209         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 210 #endif
 211
 212         /* Table terminator */
 213
 214         {NULL, ACPI_TYPE_ANY, NULL}
 215 };
 216
 217 /*
 218  * Properties of the ACPI Object Types, both internal and external.
 219  * The table is indexed by values of acpi_object_type
 220  */
 221 const u8 acpi_gbl_ns_properties[] = {
 222         ACPI_NS_NORMAL,         /* 00 Any              */
 223         ACPI_NS_NORMAL,         /* 01 Number           */
 224         ACPI_NS_NORMAL,         /* 02 String           */
 225         ACPI_NS_NORMAL,         /* 03 Buffer           */
 226         ACPI_NS_NORMAL,         /* 04 Package          */
 227         ACPI_NS_NORMAL,         /* 05 field_unit       */
 228         ACPI_NS_NEWSCOPE,       /* 06 Device           */
 229         ACPI_NS_NORMAL,         /* 07 Event            */
 230         ACPI_NS_NEWSCOPE,       /* 08 Method           */
 231         ACPI_NS_NORMAL,         /* 09 Mutex            */
 232         ACPI_NS_NORMAL,         /* 10 Region           */
 233         ACPI_NS_NEWSCOPE,       /* 11 Power            */
 234         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
 235         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
 236         ACPI_NS_NORMAL,         /* 14 buffer_field     */
 237         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
 238         ACPI_NS_NORMAL,         /* 16 Debug Object     */
 239         ACPI_NS_NORMAL,         /* 17 def_field        */
 240         ACPI_NS_NORMAL,         /* 18 bank_field       */
 241         ACPI_NS_NORMAL,         /* 19 index_field      */
 242         ACPI_NS_NORMAL,         /* 20 Reference        */
 243         ACPI_NS_NORMAL,         /* 21 Alias            */
 244         ACPI_NS_NORMAL,         /* 22 method_alias     */
 245         ACPI_NS_NORMAL,         /* 23 Notify           */
 246         ACPI_NS_NORMAL,         /* 24 Address Handler  */
 247         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
 248         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
 249         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
 250         ACPI_NS_NORMAL,         /* 28 Extra            */
 251         ACPI_NS_NORMAL,         /* 29 Data             */
 252         ACPI_NS_NORMAL          /* 30 Invalid          */
 253 };
 254
 255 /* Hex to ASCII conversion table */
 256
 257 static const char acpi_gbl_hex_to_ascii[] = {
 258         '0', '1', '2', '3', '4', '5', '6', '7',
 259         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 260 };
 261
 262 /*******************************************************************************
 263  *
 264  * FUNCTION:    acpi_ut_hex_to_ascii_char
 265  *
 266  * PARAMETERS:  Integer             - Contains the hex digit
 267  *              Position            - bit position of the digit within the
 268  *                                    integer (multiple of 4)
 269  *
 270  * RETURN:      The converted Ascii character
 271  *
 272  * DESCRIPTION: Convert a hex digit to an Ascii character
 273  *
 274  ******************************************************************************/
 275
 276 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
 277 {
 278
 279         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 280 }
 281
 282 /******************************************************************************
 283  *
 284  * Event and Hardware globals
 285  *
 286  ******************************************************************************/
 287
 288 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 289         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 290
 291         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 292                                                 ACPI_BITPOSITION_TIMER_STATUS,
 293                                                 ACPI_BITMASK_TIMER_STATUS},
 294         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 295                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 296                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 297         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 298                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 299                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 300         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 301                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 302                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 303         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 304                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 305                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 306         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 307                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 308                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 309         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 310                                                 ACPI_BITPOSITION_WAKE_STATUS,
 311                                                 ACPI_BITMASK_WAKE_STATUS},
 312         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 313                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 314                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 315
 316         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 317                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 318                                                 ACPI_BITMASK_TIMER_ENABLE},
 319         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 320                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 321                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 322         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 323                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 324                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 325         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 326                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 327                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 328         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 329                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 330                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 331         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
 332         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 333                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 334                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 335
 336         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 337                                                 ACPI_BITPOSITION_SCI_ENABLE,
 338                                                 ACPI_BITMASK_SCI_ENABLE},
 339         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 340                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 341                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 342         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 343                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 344                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 345         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
 346                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 347                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 348         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
 349                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 350                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 351         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 352                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 353                                                 ACPI_BITMASK_SLEEP_ENABLE},
 354
 355         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 356                                                 ACPI_BITPOSITION_ARB_DISABLE,
 357                                                 ACPI_BITMASK_ARB_DISABLE}
 358 };
 359
 360 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 361         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 362                                         ACPI_BITREG_TIMER_ENABLE,
 363                                         ACPI_BITMASK_TIMER_STATUS,
 364                                         ACPI_BITMASK_TIMER_ENABLE},
 365         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 366                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 367                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 368                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 369         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 370                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 371                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 372                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 373         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 374                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 375                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 376                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 377         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 378                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 379                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 380                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 381 };
 382
 383 /*******************************************************************************
 384  *
 385  * FUNCTION:    acpi_ut_get_region_name
 386  *
 387  * PARAMETERS:  None.
 388  *
 389  * RETURN:      Status
 390  *
 391  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 392  *
 393  ******************************************************************************/
 394
 395 /* Region type decoding */
 396
 397 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 398         "SystemMemory",
 399         "SystemIO",
 400         "PCI_Config",
 401         "EmbeddedControl",
 402         "SMBus",
 403         "CMOS",
 404         "PCIBARTarget",
 405         "DataTable"
 406 };
 407
 408 char *acpi_ut_get_region_name(u8 space_id)
 409 {
 410
 411         if (space_id >= ACPI_USER_REGION_BEGIN) {
 412                 return ("UserDefinedRegion");
 413         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
 414                 return ("InvalidSpaceId");
 415         }
 416
 417         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
 418 }
 419
 420 /*******************************************************************************
 421  *
 422  * FUNCTION:    acpi_ut_get_event_name
 423  *
 424  * PARAMETERS:  None.
 425  *
 426  * RETURN:      Status
 427  *
 428  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 429  *
 430  ******************************************************************************/
 431
 432 /* Event type decoding */
 433
 434 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
 435         "PM_Timer",
 436         "GlobalLock",
 437         "PowerButton",
 438         "SleepButton",
 439         "RealTimeClock",
 440 };
 441
 442 char *acpi_ut_get_event_name(u32 event_id)
 443 {
 444
 445         if (event_id > ACPI_EVENT_MAX) {
 446                 return ("InvalidEventID");
 447         }
 448
 449         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
 450 }
 451
 452 /*******************************************************************************
 453  *
 454  * FUNCTION:    acpi_ut_get_type_name
 455  *
 456  * PARAMETERS:  None.
 457  *
 458  * RETURN:      Status
 459  *
 460  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 461  *
 462  ******************************************************************************/
 463
 464 /*
 465  * Elements of acpi_gbl_ns_type_names below must match
 466  * one-to-one with values of acpi_object_type
 467  *
 468  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 469  * when stored in a table it really means that we have thus far seen no
 470  * evidence to indicate what type is actually going to be stored for this entry.
 471  */
 472 static const char acpi_gbl_bad_type[] = "UNDEFINED";
 473
 474 /* Printable names of the ACPI object types */
 475
 476 static const char *acpi_gbl_ns_type_names[] = {
 477         /* 00 */ "Untyped",
 478         /* 01 */ "Integer",
 479         /* 02 */ "String",
 480         /* 03 */ "Buffer",
 481         /* 04 */ "Package",
 482         /* 05 */ "FieldUnit",
 483         /* 06 */ "Device",
 484         /* 07 */ "Event",
 485         /* 08 */ "Method",
 486         /* 09 */ "Mutex",
 487         /* 10 */ "Region",
 488         /* 11 */ "Power",
 489         /* 12 */ "Processor",
 490         /* 13 */ "Thermal",
 491         /* 14 */ "BufferField",
 492         /* 15 */ "DdbHandle",
 493         /* 16 */ "DebugObject",
 494         /* 17 */ "RegionField",
 495         /* 18 */ "BankField",
 496         /* 19 */ "IndexField",
 497         /* 20 */ "Reference",
 498         /* 21 */ "Alias",
 499         /* 22 */ "MethodAlias",
 500         /* 23 */ "Notify",
 501         /* 24 */ "AddrHandler",
 502         /* 25 */ "ResourceDesc",
 503         /* 26 */ "ResourceFld",
 504         /* 27 */ "Scope",
 505         /* 28 */ "Extra",
 506         /* 29 */ "Data",
 507         /* 30 */ "Invalid"
 508 };
 509
 510 char *acpi_ut_get_type_name(acpi_object_type type)
 511 {
 512
 513         if (type > ACPI_TYPE_INVALID) {
 514                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 515         }
 516
 517         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
 518 }
 519
 520 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 521 {
 522
 523         if (!obj_desc) {
 524                 return ("[NULL Object Descriptor]");
 525         }
 526
 527         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
 528 }
 529
 530 /*******************************************************************************
 531  *
 532  * FUNCTION:    acpi_ut_get_node_name
 533  *
 534  * PARAMETERS:  Object               - A namespace node
 535  *
 536  * RETURN:      Pointer to a string
 537  *
 538  * DESCRIPTION: Validate the node and return the node's ACPI name.
 539  *
 540  ******************************************************************************/
 541
 542 char *acpi_ut_get_node_name(void *object)
 543 {
 544         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 545
 546         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
 547
 548         if (!object) {
 549                 return ("NULL");
 550         }
 551
 552         /* Check for Root node */
 553
 554         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
 555                 return ("\"\\\" ");
 556         }
 557
 558         /* Descriptor must be a namespace node */
 559
 560         if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
 561                 return ("####");
 562         }
 563
 564         /* Name must be a valid ACPI name */
 565
 566         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
 567                 node->name.integer = acpi_ut_repair_name(node->name.ascii);
 568         }
 569
 570         /* Return the name */
 571
 572         return (node->name.ascii);
 573 }
 574
 575 /*******************************************************************************
 576  *
 577  * FUNCTION:    acpi_ut_get_descriptor_name
 578  *
 579  * PARAMETERS:  Object               - An ACPI object
 580  *
 581  * RETURN:      Pointer to a string
 582  *
 583  * DESCRIPTION: Validate object and return the descriptor type
 584  *
 585  ******************************************************************************/
 586
 587 /* Printable names of object descriptor types */
 588
 589 static const char *acpi_gbl_desc_type_names[] = {
 590         /* 00 */ "Invalid",
 591         /* 01 */ "Cached",
 592         /* 02 */ "State-Generic",
 593         /* 03 */ "State-Update",
 594         /* 04 */ "State-Package",
 595         /* 05 */ "State-Control",
 596         /* 06 */ "State-RootParseScope",
 597         /* 07 */ "State-ParseScope",
 598         /* 08 */ "State-WalkScope",
 599         /* 09 */ "State-Result",
 600         /* 10 */ "State-Notify",
 601         /* 11 */ "State-Thread",
 602         /* 12 */ "Walk",
 603         /* 13 */ "Parser",
 604         /* 14 */ "Operand",
 605         /* 15 */ "Node"
 606 };
 607
 608 char *acpi_ut_get_descriptor_name(void *object)
 609 {
 610
 611         if (!object) {
 612                 return ("NULL OBJECT");
 613         }
 614
 615         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
 616                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 617         }
 618
 619         return (ACPI_CAST_PTR(char,
 620                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
 621                                                        (object)]));
 622
 623 }
 624
 625 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 626 /*
 627  * Strings and procedures used for debug only
 628  */
 629
 630 /*******************************************************************************
 631  *
 632  * FUNCTION:    acpi_ut_get_mutex_name
 633  *
 634  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 635  *
 636  * RETURN:      String containing the name of the mutex. Always returns a valid
 637  *              pointer.
 638  *
 639  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 640  *
 641  ******************************************************************************/
 642
 643 char *acpi_ut_get_mutex_name(u32 mutex_id)
 644 {
 645
 646         if (mutex_id > ACPI_MAX_MUTEX) {
 647                 return ("Invalid Mutex ID");
 648         }
 649
 650         return (acpi_gbl_mutex_names[mutex_id]);
 651 }
 652 #endif
 653
 654 /*******************************************************************************
 655  *
 656  * FUNCTION:    acpi_ut_valid_object_type
 657  *
 658  * PARAMETERS:  Type            - Object type to be validated
 659  *
 660  * RETURN:      TRUE if valid object type, FALSE otherwise
 661  *
 662  * DESCRIPTION: Validate an object type
 663  *
 664  ******************************************************************************/
 665
 666 u8 acpi_ut_valid_object_type(acpi_object_type type)
 667 {
 668
 669         if (type > ACPI_TYPE_LOCAL_MAX) {
 670
 671                 /* Note: Assumes all TYPEs are contiguous (external/local) */
 672
 673                 return (FALSE);
 674         }
 675
 676         return (TRUE);
 677 }
 678
 679 /*******************************************************************************
 680  *
 681  * FUNCTION:    acpi_ut_init_globals
 682  *
 683  * PARAMETERS:  None
 684  *
 685  * RETURN:      None
 686  *
 687  * DESCRIPTION: Init library globals.  All globals that require specific
 688  *              initialization should be initialized here!
 689  *
 690  ******************************************************************************/
 691
 692 void acpi_ut_init_globals(void)
 693 {
 694         acpi_status status;
 695         u32 i;
 696
 697         ACPI_FUNCTION_TRACE(ut_init_globals);
 698
 699         /* Create all memory caches */
 700
 701         status = acpi_ut_create_caches();
 702         if (ACPI_FAILURE(status)) {
 703                 return;
 704         }
 705
 706         /* Mutex locked flags */
 707
 708         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 709                 acpi_gbl_mutex_info[i].mutex = NULL;
 710                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 711                 acpi_gbl_mutex_info[i].use_count = 0;
 712         }
 713
 714         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 715                 acpi_gbl_owner_id_mask[i] = 0;
 716         }
 717         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
 718
 719         /* GPE support */
 720
 721         acpi_gpe_count = 0;
 722         acpi_gbl_gpe_xrupt_list_head = NULL;
 723         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 724         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 725
 726         /* Global notify handlers */
 727
 728         acpi_gbl_system_notify.handler = NULL;
 729         acpi_gbl_device_notify.handler = NULL;
 730         acpi_gbl_exception_handler = NULL;
 731         acpi_gbl_init_handler = NULL;
 732
 733         /* Global Lock support */
 734
 735         acpi_gbl_global_lock_semaphore = NULL;
 736         acpi_gbl_global_lock_mutex = NULL;
 737         acpi_gbl_global_lock_acquired = FALSE;
 738         acpi_gbl_global_lock_handle = 0;
 739
 740         /* Miscellaneous variables */
 741
 742         acpi_gbl_cm_single_step = FALSE;
 743         acpi_gbl_db_terminate_threads = FALSE;
 744         acpi_gbl_shutdown = FALSE;
 745         acpi_gbl_ns_lookup_count = 0;
 746         acpi_gbl_ps_find_count = 0;
 747         acpi_gbl_acpi_hardware_present = TRUE;
 748         acpi_gbl_last_owner_id_index = 0;
 749         acpi_gbl_next_owner_id_offset = 0;
 750         acpi_gbl_trace_method_name = 0;
 751         acpi_gbl_trace_dbg_level = 0;
 752         acpi_gbl_trace_dbg_layer = 0;
 753         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 754         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 755
 756         /* Hardware oriented */
 757
 758         acpi_gbl_events_initialized = FALSE;
 759         acpi_gbl_system_awake_and_running = TRUE;
 760
 761         /* Namespace */
 762
 763         acpi_gbl_root_node = NULL;
 764         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 765         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 766         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 767         acpi_gbl_root_node_struct.child = NULL;
 768         acpi_gbl_root_node_struct.peer = NULL;
 769         acpi_gbl_root_node_struct.object = NULL;
 770         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 771
 772 #ifdef ACPI_DEBUG_OUTPUT
 773         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
 774 #endif
 775
 776         return_VOID;
 777 }
 778
 779 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 780 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
 781 ACPI_EXPORT_SYMBOL(acpi_gpe_count)