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 u8 acpi_gbl_decode_to8bit[8] = { 1, 2, 4, 8, 16, 32, 64, 128 };
 168
 169 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
 170         "\\_S0_",
 171         "\\_S1_",
 172         "\\_S2_",
 173         "\\_S3_",
 174         "\\_S4_",
 175         "\\_S5_"
 176 };
 177
 178 const char *acpi_gbl_highest_dstate_names[4] = {
 179         "_S1D",
 180         "_S2D",
 181         "_S3D",
 182         "_S4D"
 183 };
 184
 185 /*******************************************************************************
 186  *
 187  * Namespace globals
 188  *
 189  ******************************************************************************/
 190
 191 /*
 192  * Predefined ACPI Names (Built-in to the Interpreter)
 193  *
 194  * NOTES:
 195  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 196  *    during the initialization sequence.
 197  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 198  *    perform a Notify() operation on it.
 199  */
 200 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 201         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 202         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 203         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 204         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 205         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
 206         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 207         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 208         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 209
 210 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 211         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 212 #endif
 213
 214         /* Table terminator */
 215
 216         {NULL, ACPI_TYPE_ANY, NULL}
 217 };
 218
 219 /*
 220  * Properties of the ACPI Object Types, both internal and external.
 221  * The table is indexed by values of acpi_object_type
 222  */
 223 const u8 acpi_gbl_ns_properties[] = {
 224         ACPI_NS_NORMAL,         /* 00 Any              */
 225         ACPI_NS_NORMAL,         /* 01 Number           */
 226         ACPI_NS_NORMAL,         /* 02 String           */
 227         ACPI_NS_NORMAL,         /* 03 Buffer           */
 228         ACPI_NS_NORMAL,         /* 04 Package          */
 229         ACPI_NS_NORMAL,         /* 05 field_unit       */
 230         ACPI_NS_NEWSCOPE,       /* 06 Device           */
 231         ACPI_NS_NORMAL,         /* 07 Event            */
 232         ACPI_NS_NEWSCOPE,       /* 08 Method           */
 233         ACPI_NS_NORMAL,         /* 09 Mutex            */
 234         ACPI_NS_NORMAL,         /* 10 Region           */
 235         ACPI_NS_NEWSCOPE,       /* 11 Power            */
 236         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
 237         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
 238         ACPI_NS_NORMAL,         /* 14 buffer_field     */
 239         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
 240         ACPI_NS_NORMAL,         /* 16 Debug Object     */
 241         ACPI_NS_NORMAL,         /* 17 def_field        */
 242         ACPI_NS_NORMAL,         /* 18 bank_field       */
 243         ACPI_NS_NORMAL,         /* 19 index_field      */
 244         ACPI_NS_NORMAL,         /* 20 Reference        */
 245         ACPI_NS_NORMAL,         /* 21 Alias            */
 246         ACPI_NS_NORMAL,         /* 22 method_alias     */
 247         ACPI_NS_NORMAL,         /* 23 Notify           */
 248         ACPI_NS_NORMAL,         /* 24 Address Handler  */
 249         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
 250         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
 251         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
 252         ACPI_NS_NORMAL,         /* 28 Extra            */
 253         ACPI_NS_NORMAL,         /* 29 Data             */
 254         ACPI_NS_NORMAL          /* 30 Invalid          */
 255 };
 256
 257 /* Hex to ASCII conversion table */
 258
 259 static const char acpi_gbl_hex_to_ascii[] = {
 260         '0', '1', '2', '3', '4', '5', '6', '7',
 261         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 262 };
 263
 264 /*******************************************************************************
 265  *
 266  * FUNCTION:    acpi_ut_hex_to_ascii_char
 267  *
 268  * PARAMETERS:  Integer             - Contains the hex digit
 269  *              Position            - bit position of the digit within the
 270  *                                    integer (multiple of 4)
 271  *
 272  * RETURN:      The converted Ascii character
 273  *
 274  * DESCRIPTION: Convert a hex digit to an Ascii character
 275  *
 276  ******************************************************************************/
 277
 278 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
 279 {
 280
 281         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 282 }
 283
 284 /******************************************************************************
 285  *
 286  * Event and Hardware globals
 287  *
 288  ******************************************************************************/
 289
 290 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 291         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 292
 293         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 294                                                 ACPI_BITPOSITION_TIMER_STATUS,
 295                                                 ACPI_BITMASK_TIMER_STATUS},
 296         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 297                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 298                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 299         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 300                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 301                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 302         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 303                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 304                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 305         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 306                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 307                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 308         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 309                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 310                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 311         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 312                                                 ACPI_BITPOSITION_WAKE_STATUS,
 313                                                 ACPI_BITMASK_WAKE_STATUS},
 314         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 315                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 316                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 317
 318         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 319                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 320                                                 ACPI_BITMASK_TIMER_ENABLE},
 321         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 322                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 323                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 324         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 325                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 326                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 327         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 328                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 329                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 330         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 331                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 332                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 333         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
 334         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 335                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 336                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 337
 338         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 339                                                 ACPI_BITPOSITION_SCI_ENABLE,
 340                                                 ACPI_BITMASK_SCI_ENABLE},
 341         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 342                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 343                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 344         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 345                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 346                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 347         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
 348                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 349                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 350         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
 351                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 352                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 353         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 354                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 355                                                 ACPI_BITMASK_SLEEP_ENABLE},
 356
 357         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 358                                                 ACPI_BITPOSITION_ARB_DISABLE,
 359                                                 ACPI_BITMASK_ARB_DISABLE}
 360 };
 361
 362 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 363         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 364                                         ACPI_BITREG_TIMER_ENABLE,
 365                                         ACPI_BITMASK_TIMER_STATUS,
 366                                         ACPI_BITMASK_TIMER_ENABLE},
 367         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 368                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 369                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 370                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 371         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 372                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 373                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 374                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 375         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 376                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 377                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 378                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 379         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 380                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 381                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 382                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 383 };
 384
 385 /*******************************************************************************
 386  *
 387  * FUNCTION:    acpi_ut_get_region_name
 388  *
 389  * PARAMETERS:  None.
 390  *
 391  * RETURN:      Status
 392  *
 393  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 394  *
 395  ******************************************************************************/
 396
 397 /* Region type decoding */
 398
 399 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 400         "SystemMemory",
 401         "SystemIO",
 402         "PCI_Config",
 403         "EmbeddedControl",
 404         "SMBus",
 405         "CMOS",
 406         "PCIBARTarget",
 407         "DataTable"
 408 };
 409
 410 char *acpi_ut_get_region_name(u8 space_id)
 411 {
 412
 413         if (space_id >= ACPI_USER_REGION_BEGIN) {
 414                 return ("UserDefinedRegion");
 415         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
 416                 return ("InvalidSpaceId");
 417         }
 418
 419         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
 420 }
 421
 422 /*******************************************************************************
 423  *
 424  * FUNCTION:    acpi_ut_get_event_name
 425  *
 426  * PARAMETERS:  None.
 427  *
 428  * RETURN:      Status
 429  *
 430  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 431  *
 432  ******************************************************************************/
 433
 434 /* Event type decoding */
 435
 436 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
 437         "PM_Timer",
 438         "GlobalLock",
 439         "PowerButton",
 440         "SleepButton",
 441         "RealTimeClock",
 442 };
 443
 444 char *acpi_ut_get_event_name(u32 event_id)
 445 {
 446
 447         if (event_id > ACPI_EVENT_MAX) {
 448                 return ("InvalidEventID");
 449         }
 450
 451         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
 452 }
 453
 454 /*******************************************************************************
 455  *
 456  * FUNCTION:    acpi_ut_get_type_name
 457  *
 458  * PARAMETERS:  None.
 459  *
 460  * RETURN:      Status
 461  *
 462  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 463  *
 464  ******************************************************************************/
 465
 466 /*
 467  * Elements of acpi_gbl_ns_type_names below must match
 468  * one-to-one with values of acpi_object_type
 469  *
 470  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 471  * when stored in a table it really means that we have thus far seen no
 472  * evidence to indicate what type is actually going to be stored for this entry.
 473  */
 474 static const char acpi_gbl_bad_type[] = "UNDEFINED";
 475
 476 /* Printable names of the ACPI object types */
 477
 478 static const char *acpi_gbl_ns_type_names[] = {
 479         /* 00 */ "Untyped",
 480         /* 01 */ "Integer",
 481         /* 02 */ "String",
 482         /* 03 */ "Buffer",
 483         /* 04 */ "Package",
 484         /* 05 */ "FieldUnit",
 485         /* 06 */ "Device",
 486         /* 07 */ "Event",
 487         /* 08 */ "Method",
 488         /* 09 */ "Mutex",
 489         /* 10 */ "Region",
 490         /* 11 */ "Power",
 491         /* 12 */ "Processor",
 492         /* 13 */ "Thermal",
 493         /* 14 */ "BufferField",
 494         /* 15 */ "DdbHandle",
 495         /* 16 */ "DebugObject",
 496         /* 17 */ "RegionField",
 497         /* 18 */ "BankField",
 498         /* 19 */ "IndexField",
 499         /* 20 */ "Reference",
 500         /* 21 */ "Alias",
 501         /* 22 */ "MethodAlias",
 502         /* 23 */ "Notify",
 503         /* 24 */ "AddrHandler",
 504         /* 25 */ "ResourceDesc",
 505         /* 26 */ "ResourceFld",
 506         /* 27 */ "Scope",
 507         /* 28 */ "Extra",
 508         /* 29 */ "Data",
 509         /* 30 */ "Invalid"
 510 };
 511
 512 char *acpi_ut_get_type_name(acpi_object_type type)
 513 {
 514
 515         if (type > ACPI_TYPE_INVALID) {
 516                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 517         }
 518
 519         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
 520 }
 521
 522 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 523 {
 524
 525         if (!obj_desc) {
 526                 return ("[NULL Object Descriptor]");
 527         }
 528
 529         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
 530 }
 531
 532 /*******************************************************************************
 533  *
 534  * FUNCTION:    acpi_ut_get_node_name
 535  *
 536  * PARAMETERS:  Object               - A namespace node
 537  *
 538  * RETURN:      Pointer to a string
 539  *
 540  * DESCRIPTION: Validate the node and return the node's ACPI name.
 541  *
 542  ******************************************************************************/
 543
 544 char *acpi_ut_get_node_name(void *object)
 545 {
 546         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 547
 548         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
 549
 550         if (!object) {
 551                 return ("NULL");
 552         }
 553
 554         /* Check for Root node */
 555
 556         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
 557                 return ("\"\\\" ");
 558         }
 559
 560         /* Descriptor must be a namespace node */
 561
 562         if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
 563                 return ("####");
 564         }
 565
 566         /* Name must be a valid ACPI name */
 567
 568         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
 569                 node->name.integer = acpi_ut_repair_name(node->name.integer);
 570         }
 571
 572         /* Return the name */
 573
 574         return (node->name.ascii);
 575 }
 576
 577 /*******************************************************************************
 578  *
 579  * FUNCTION:    acpi_ut_get_descriptor_name
 580  *
 581  * PARAMETERS:  Object               - An ACPI object
 582  *
 583  * RETURN:      Pointer to a string
 584  *
 585  * DESCRIPTION: Validate object and return the descriptor type
 586  *
 587  ******************************************************************************/
 588
 589 /* Printable names of object descriptor types */
 590
 591 static const char *acpi_gbl_desc_type_names[] = {
 592         /* 00 */ "Invalid",
 593         /* 01 */ "Cached",
 594         /* 02 */ "State-Generic",
 595         /* 03 */ "State-Update",
 596         /* 04 */ "State-Package",
 597         /* 05 */ "State-Control",
 598         /* 06 */ "State-RootParseScope",
 599         /* 07 */ "State-ParseScope",
 600         /* 08 */ "State-WalkScope",
 601         /* 09 */ "State-Result",
 602         /* 10 */ "State-Notify",
 603         /* 11 */ "State-Thread",
 604         /* 12 */ "Walk",
 605         /* 13 */ "Parser",
 606         /* 14 */ "Operand",
 607         /* 15 */ "Node"
 608 };
 609
 610 char *acpi_ut_get_descriptor_name(void *object)
 611 {
 612
 613         if (!object) {
 614                 return ("NULL OBJECT");
 615         }
 616
 617         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
 618                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 619         }
 620
 621         return (ACPI_CAST_PTR(char,
 622                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
 623                                                        (object)]));
 624
 625 }
 626
 627 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 628 /*
 629  * Strings and procedures used for debug only
 630  */
 631
 632 /*******************************************************************************
 633  *
 634  * FUNCTION:    acpi_ut_get_mutex_name
 635  *
 636  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 637  *
 638  * RETURN:      String containing the name of the mutex. Always returns a valid
 639  *              pointer.
 640  *
 641  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 642  *
 643  ******************************************************************************/
 644
 645 char *acpi_ut_get_mutex_name(u32 mutex_id)
 646 {
 647
 648         if (mutex_id > ACPI_MAX_MUTEX) {
 649                 return ("Invalid Mutex ID");
 650         }
 651
 652         return (acpi_gbl_mutex_names[mutex_id]);
 653 }
 654 #endif
 655
 656 /*******************************************************************************
 657  *
 658  * FUNCTION:    acpi_ut_valid_object_type
 659  *
 660  * PARAMETERS:  Type            - Object type to be validated
 661  *
 662  * RETURN:      TRUE if valid object type, FALSE otherwise
 663  *
 664  * DESCRIPTION: Validate an object type
 665  *
 666  ******************************************************************************/
 667
 668 u8 acpi_ut_valid_object_type(acpi_object_type type)
 669 {
 670
 671         if (type > ACPI_TYPE_LOCAL_MAX) {
 672
 673                 /* Note: Assumes all TYPEs are contiguous (external/local) */
 674
 675                 return (FALSE);
 676         }
 677
 678         return (TRUE);
 679 }
 680
 681 /*******************************************************************************
 682  *
 683  * FUNCTION:    acpi_ut_init_globals
 684  *
 685  * PARAMETERS:  None
 686  *
 687  * RETURN:      None
 688  *
 689  * DESCRIPTION: Init library globals.  All globals that require specific
 690  *              initialization should be initialized here!
 691  *
 692  ******************************************************************************/
 693
 694 void acpi_ut_init_globals(void)
 695 {
 696         acpi_status status;
 697         u32 i;
 698
 699         ACPI_FUNCTION_TRACE(ut_init_globals);
 700
 701         /* Create all memory caches */
 702
 703         status = acpi_ut_create_caches();
 704         if (ACPI_FAILURE(status)) {
 705                 return;
 706         }
 707
 708         /* Mutex locked flags */
 709
 710         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 711                 acpi_gbl_mutex_info[i].mutex = NULL;
 712                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 713                 acpi_gbl_mutex_info[i].use_count = 0;
 714         }
 715
 716         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 717                 acpi_gbl_owner_id_mask[i] = 0;
 718         }
 719         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
 720
 721         /* GPE support */
 722
 723         acpi_gpe_count = 0;
 724         acpi_gbl_gpe_xrupt_list_head = NULL;
 725         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 726         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 727
 728         /* Global notify handlers */
 729
 730         acpi_gbl_system_notify.handler = NULL;
 731         acpi_gbl_device_notify.handler = NULL;
 732         acpi_gbl_exception_handler = NULL;
 733         acpi_gbl_init_handler = NULL;
 734
 735         /* Global Lock support */
 736
 737         acpi_gbl_global_lock_semaphore = NULL;
 738         acpi_gbl_global_lock_mutex = NULL;
 739         acpi_gbl_global_lock_acquired = FALSE;
 740         acpi_gbl_global_lock_handle = 0;
 741
 742         /* Miscellaneous variables */
 743
 744         acpi_gbl_cm_single_step = FALSE;
 745         acpi_gbl_db_terminate_threads = FALSE;
 746         acpi_gbl_shutdown = FALSE;
 747         acpi_gbl_ns_lookup_count = 0;
 748         acpi_gbl_ps_find_count = 0;
 749         acpi_gbl_acpi_hardware_present = TRUE;
 750         acpi_gbl_last_owner_id_index = 0;
 751         acpi_gbl_next_owner_id_offset = 0;
 752         acpi_gbl_trace_method_name = 0;
 753         acpi_gbl_trace_dbg_level = 0;
 754         acpi_gbl_trace_dbg_layer = 0;
 755         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 756         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 757
 758         /* Hardware oriented */
 759
 760         acpi_gbl_events_initialized = FALSE;
 761         acpi_gbl_system_awake_and_running = TRUE;
 762
 763         /* Namespace */
 764
 765         acpi_gbl_root_node = NULL;
 766         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 767         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 768         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 769         acpi_gbl_root_node_struct.child = NULL;
 770         acpi_gbl_root_node_struct.peer = NULL;
 771         acpi_gbl_root_node_struct.object = NULL;
 772         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 773
 774 #ifdef ACPI_DEBUG_OUTPUT
 775         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
 776 #endif
 777
 778         return_VOID;
 779 }
 780
 781 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 782 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
 783 ACPI_EXPORT_SYMBOL(acpi_gpe_count)