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 #define _COMPONENT          ACPI_UTILITIES
  50 ACPI_MODULE_NAME("utglobal")
  51
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_format_exception
  55  *
  56  * PARAMETERS:  Status       - The acpi_status code to be formatted
  57  *
  58  * RETURN:      A string containing the exception text. A valid pointer is
  59  *              always returned.
  60  *
  61  * DESCRIPTION: This function translates an ACPI exception into an ASCII string.
  62  *
  63  ******************************************************************************/
  64 const char *acpi_format_exception(acpi_status status)
  65 {
  66         acpi_status sub_status;
  67         const char *exception = NULL;
  68
  69         ACPI_FUNCTION_ENTRY();
  70
  71         /*
  72          * Status is composed of two parts, a "type" and an actual code
  73          */
  74         sub_status = (status & ~AE_CODE_MASK);
  75
  76         switch (status & AE_CODE_MASK) {
  77         case AE_CODE_ENVIRONMENTAL:
  78
  79                 if (sub_status <= AE_CODE_ENV_MAX) {
  80                         exception = acpi_gbl_exception_names_env[sub_status];
  81                 }
  82                 break;
  83
  84         case AE_CODE_PROGRAMMER:
  85
  86                 if (sub_status <= AE_CODE_PGM_MAX) {
  87                         exception =
  88                             acpi_gbl_exception_names_pgm[sub_status - 1];
  89                 }
  90                 break;
  91
  92         case AE_CODE_ACPI_TABLES:
  93
  94                 if (sub_status <= AE_CODE_TBL_MAX) {
  95                         exception =
  96                             acpi_gbl_exception_names_tbl[sub_status - 1];
  97                 }
  98                 break;
  99
 100         case AE_CODE_AML:
 101
 102                 if (sub_status <= AE_CODE_AML_MAX) {
 103                         exception =
 104                             acpi_gbl_exception_names_aml[sub_status - 1];
 105                 }
 106                 break;
 107
 108         case AE_CODE_CONTROL:
 109
 110                 if (sub_status <= AE_CODE_CTRL_MAX) {
 111                         exception =
 112                             acpi_gbl_exception_names_ctrl[sub_status - 1];
 113                 }
 114                 break;
 115
 116         default:
 117                 break;
 118         }
 119
 120         if (!exception) {
 121
 122                 /* Exception code was not recognized */
 123
 124                 ACPI_ERROR((AE_INFO,
 125                             "Unknown exception code: 0x%8.8X", status));
 126
 127                 exception = "UNKNOWN_STATUS_CODE";
 128         }
 129
 130         return (ACPI_CAST_PTR(const char, exception));
 131 }
 132
 133 /*******************************************************************************
 134  *
 135  * Static global variable initialization.
 136  *
 137  ******************************************************************************/
 138
 139 /*
 140  * We want the debug switches statically initialized so they
 141  * are already set when the debugger is entered.
 142  */
 143
 144 /* Debug switch - level and trace mask */
 145 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
 146
 147 /* Debug switch - layer (component) mask */
 148
 149 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
 150 u32 acpi_gbl_nesting_level = 0;
 151
 152 /* Debugger globals */
 153
 154 u8 acpi_gbl_db_terminate_threads = FALSE;
 155 u8 acpi_gbl_abort_method = FALSE;
 156 u8 acpi_gbl_method_executing = FALSE;
 157
 158 /* System flags */
 159
 160 u32 acpi_gbl_startup_flags = 0;
 161
 162 /* System starts uninitialized */
 163
 164 u8 acpi_gbl_shutdown = TRUE;
 165
 166 const u8 acpi_gbl_decode_to8bit[8] = { 1, 2, 4, 8, 16, 32, 64, 128 };
 167
 168 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
 169         "\\_S0_",
 170         "\\_S1_",
 171         "\\_S2_",
 172         "\\_S3_",
 173         "\\_S4_",
 174         "\\_S5_"
 175 };
 176
 177 const char *acpi_gbl_highest_dstate_names[4] = {
 178         "_S1D",
 179         "_S2D",
 180         "_S3D",
 181         "_S4D"
 182 };
 183
 184 /*******************************************************************************
 185  *
 186  * Namespace globals
 187  *
 188  ******************************************************************************/
 189
 190 /*
 191  * Predefined ACPI Names (Built-in to the Interpreter)
 192  *
 193  * NOTES:
 194  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 195  *    during the initialization sequence.
 196  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 197  *    perform a Notify() operation on it.
 198  */
 199 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 200         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 201         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 202         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 203         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 204         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
 205         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 206         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 207         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 208
 209 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 210         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 211 #endif
 212
 213         /* Table terminator */
 214
 215         {NULL, ACPI_TYPE_ANY, NULL}
 216 };
 217
 218 /*
 219  * Properties of the ACPI Object Types, both internal and external.
 220  * The table is indexed by values of acpi_object_type
 221  */
 222 const u8 acpi_gbl_ns_properties[] = {
 223         ACPI_NS_NORMAL,         /* 00 Any              */
 224         ACPI_NS_NORMAL,         /* 01 Number           */
 225         ACPI_NS_NORMAL,         /* 02 String           */
 226         ACPI_NS_NORMAL,         /* 03 Buffer           */
 227         ACPI_NS_NORMAL,         /* 04 Package          */
 228         ACPI_NS_NORMAL,         /* 05 field_unit       */
 229         ACPI_NS_NEWSCOPE,       /* 06 Device           */
 230         ACPI_NS_NORMAL,         /* 07 Event            */
 231         ACPI_NS_NEWSCOPE,       /* 08 Method           */
 232         ACPI_NS_NORMAL,         /* 09 Mutex            */
 233         ACPI_NS_NORMAL,         /* 10 Region           */
 234         ACPI_NS_NEWSCOPE,       /* 11 Power            */
 235         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
 236         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
 237         ACPI_NS_NORMAL,         /* 14 buffer_field     */
 238         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
 239         ACPI_NS_NORMAL,         /* 16 Debug Object     */
 240         ACPI_NS_NORMAL,         /* 17 def_field        */
 241         ACPI_NS_NORMAL,         /* 18 bank_field       */
 242         ACPI_NS_NORMAL,         /* 19 index_field      */
 243         ACPI_NS_NORMAL,         /* 20 Reference        */
 244         ACPI_NS_NORMAL,         /* 21 Alias            */
 245         ACPI_NS_NORMAL,         /* 22 method_alias     */
 246         ACPI_NS_NORMAL,         /* 23 Notify           */
 247         ACPI_NS_NORMAL,         /* 24 Address Handler  */
 248         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
 249         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
 250         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
 251         ACPI_NS_NORMAL,         /* 28 Extra            */
 252         ACPI_NS_NORMAL,         /* 29 Data             */
 253         ACPI_NS_NORMAL          /* 30 Invalid          */
 254 };
 255
 256 /* Hex to ASCII conversion table */
 257
 258 static const char acpi_gbl_hex_to_ascii[] = {
 259         '0', '1', '2', '3', '4', '5', '6', '7',
 260         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 261 };
 262
 263 /*******************************************************************************
 264  *
 265  * FUNCTION:    acpi_ut_hex_to_ascii_char
 266  *
 267  * PARAMETERS:  Integer             - Contains the hex digit
 268  *              Position            - bit position of the digit within the
 269  *                                    integer (multiple of 4)
 270  *
 271  * RETURN:      The converted Ascii character
 272  *
 273  * DESCRIPTION: Convert a hex digit to an Ascii character
 274  *
 275  ******************************************************************************/
 276
 277 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
 278 {
 279
 280         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 281 }
 282
 283 /*******************************************************************************
 284  *
 285  * Table name globals
 286  *
 287  * NOTE: This table includes ONLY the ACPI tables that the subsystem consumes.
 288  * it is NOT an exhaustive list of all possible ACPI tables.  All ACPI tables
 289  * that are not used by the subsystem are simply ignored.
 290  *
 291  * Do NOT add any table to this list that is not consumed directly by this
 292  * subsystem (No MADT, ECDT, SBST, etc.)
 293  *
 294  ******************************************************************************/
 295
 296 struct acpi_table_list acpi_gbl_table_lists[ACPI_TABLE_ID_MAX + 1];
 297
 298 struct acpi_table_support acpi_gbl_table_data[ACPI_TABLE_ID_MAX + 1] = {
 299         /***********    Name,   Signature, Global typed pointer     Signature size,      Type                  How many allowed?,    Contains valid AML? */
 300
 301         /* RSDP 0 */ {RSDP_NAME, RSDP_SIG, NULL, sizeof(RSDP_SIG) - 1,
 302                       ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
 303         ,
 304         /* DSDT 1 */ {DSDT_SIG, DSDT_SIG, (void *)&acpi_gbl_DSDT,
 305                       sizeof(DSDT_SIG) - 1,
 306                       ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE |
 307                       ACPI_TABLE_EXECUTABLE}
 308         ,
 309         /* FADT 2 */ {FADT_SIG, FADT_SIG, (void *)&acpi_gbl_FADT,
 310                       sizeof(FADT_SIG) - 1,
 311                       ACPI_TABLE_PRIMARY | ACPI_TABLE_SINGLE}
 312         ,
 313         /* FACS 3 */ {FACS_SIG, FACS_SIG, (void *)&acpi_gbl_FACS,
 314                       sizeof(FACS_SIG) - 1,
 315                       ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE}
 316         ,
 317         /* PSDT 4 */ {PSDT_SIG, PSDT_SIG, NULL, sizeof(PSDT_SIG) - 1,
 318                       ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
 319                       ACPI_TABLE_EXECUTABLE}
 320         ,
 321         /* SSDT 5 */ {SSDT_SIG, SSDT_SIG, NULL, sizeof(SSDT_SIG) - 1,
 322                       ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
 323                       ACPI_TABLE_EXECUTABLE}
 324         ,
 325         /* XSDT 6 */ {XSDT_SIG, XSDT_SIG, NULL, sizeof(RSDT_SIG) - 1,
 326                       ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
 327         ,
 328 };
 329
 330 /******************************************************************************
 331  *
 332  * Event and Hardware globals
 333  *
 334  ******************************************************************************/
 335
 336 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 337         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 338
 339         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 340                                                 ACPI_BITPOSITION_TIMER_STATUS,
 341                                                 ACPI_BITMASK_TIMER_STATUS},
 342         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 343                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 344                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 345         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 346                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 347                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 348         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 349                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 350                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 351         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 352                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 353                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 354         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 355                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 356                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 357         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 358                                                 ACPI_BITPOSITION_WAKE_STATUS,
 359                                                 ACPI_BITMASK_WAKE_STATUS},
 360         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 361                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 362                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 363
 364         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 365                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 366                                                 ACPI_BITMASK_TIMER_ENABLE},
 367         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 368                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 369                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 370         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 371                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 372                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 373         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 374                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 375                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 376         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 377                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 378                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 379         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
 380         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 381                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 382                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 383
 384         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 385                                                 ACPI_BITPOSITION_SCI_ENABLE,
 386                                                 ACPI_BITMASK_SCI_ENABLE},
 387         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 388                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 389                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 390         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 391                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 392                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 393         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
 394                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 395                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 396         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
 397                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 398                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 399         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 400                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 401                                                 ACPI_BITMASK_SLEEP_ENABLE},
 402
 403         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 404                                                 ACPI_BITPOSITION_ARB_DISABLE,
 405                                                 ACPI_BITMASK_ARB_DISABLE}
 406 };
 407
 408 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 409         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 410                                         ACPI_BITREG_TIMER_ENABLE,
 411                                         ACPI_BITMASK_TIMER_STATUS,
 412                                         ACPI_BITMASK_TIMER_ENABLE},
 413         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 414                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 415                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 416                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 417         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 418                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 419                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 420                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 421         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 422                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 423                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 424                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 425         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 426                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 427                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 428                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 429 };
 430
 431 /*******************************************************************************
 432  *
 433  * FUNCTION:    acpi_ut_get_region_name
 434  *
 435  * PARAMETERS:  None.
 436  *
 437  * RETURN:      Status
 438  *
 439  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 440  *
 441  ******************************************************************************/
 442
 443 /* Region type decoding */
 444
 445 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 446         "SystemMemory",
 447         "SystemIO",
 448         "PCI_Config",
 449         "EmbeddedControl",
 450         "SMBus",
 451         "CMOS",
 452         "PCIBARTarget",
 453         "DataTable"
 454 };
 455
 456 char *acpi_ut_get_region_name(u8 space_id)
 457 {
 458
 459         if (space_id >= ACPI_USER_REGION_BEGIN) {
 460                 return ("UserDefinedRegion");
 461         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
 462                 return ("InvalidSpaceId");
 463         }
 464
 465         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
 466 }
 467
 468 /*******************************************************************************
 469  *
 470  * FUNCTION:    acpi_ut_get_event_name
 471  *
 472  * PARAMETERS:  None.
 473  *
 474  * RETURN:      Status
 475  *
 476  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 477  *
 478  ******************************************************************************/
 479
 480 /* Event type decoding */
 481
 482 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
 483         "PM_Timer",
 484         "GlobalLock",
 485         "PowerButton",
 486         "SleepButton",
 487         "RealTimeClock",
 488 };
 489
 490 char *acpi_ut_get_event_name(u32 event_id)
 491 {
 492
 493         if (event_id > ACPI_EVENT_MAX) {
 494                 return ("InvalidEventID");
 495         }
 496
 497         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
 498 }
 499
 500 /*******************************************************************************
 501  *
 502  * FUNCTION:    acpi_ut_get_type_name
 503  *
 504  * PARAMETERS:  None.
 505  *
 506  * RETURN:      Status
 507  *
 508  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 509  *
 510  ******************************************************************************/
 511
 512 /*
 513  * Elements of acpi_gbl_ns_type_names below must match
 514  * one-to-one with values of acpi_object_type
 515  *
 516  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 517  * when stored in a table it really means that we have thus far seen no
 518  * evidence to indicate what type is actually going to be stored for this entry.
 519  */
 520 static const char acpi_gbl_bad_type[] = "UNDEFINED";
 521
 522 /* Printable names of the ACPI object types */
 523
 524 static const char *acpi_gbl_ns_type_names[] = {
 525         /* 00 */ "Untyped",
 526         /* 01 */ "Integer",
 527         /* 02 */ "String",
 528         /* 03 */ "Buffer",
 529         /* 04 */ "Package",
 530         /* 05 */ "FieldUnit",
 531         /* 06 */ "Device",
 532         /* 07 */ "Event",
 533         /* 08 */ "Method",
 534         /* 09 */ "Mutex",
 535         /* 10 */ "Region",
 536         /* 11 */ "Power",
 537         /* 12 */ "Processor",
 538         /* 13 */ "Thermal",
 539         /* 14 */ "BufferField",
 540         /* 15 */ "DdbHandle",
 541         /* 16 */ "DebugObject",
 542         /* 17 */ "RegionField",
 543         /* 18 */ "BankField",
 544         /* 19 */ "IndexField",
 545         /* 20 */ "Reference",
 546         /* 21 */ "Alias",
 547         /* 22 */ "MethodAlias",
 548         /* 23 */ "Notify",
 549         /* 24 */ "AddrHandler",
 550         /* 25 */ "ResourceDesc",
 551         /* 26 */ "ResourceFld",
 552         /* 27 */ "Scope",
 553         /* 28 */ "Extra",
 554         /* 29 */ "Data",
 555         /* 30 */ "Invalid"
 556 };
 557
 558 char *acpi_ut_get_type_name(acpi_object_type type)
 559 {
 560
 561         if (type > ACPI_TYPE_INVALID) {
 562                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 563         }
 564
 565         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
 566 }
 567
 568 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 569 {
 570
 571         if (!obj_desc) {
 572                 return ("[NULL Object Descriptor]");
 573         }
 574
 575         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
 576 }
 577
 578 /*******************************************************************************
 579  *
 580  * FUNCTION:    acpi_ut_get_node_name
 581  *
 582  * PARAMETERS:  Object               - A namespace node
 583  *
 584  * RETURN:      Pointer to a string
 585  *
 586  * DESCRIPTION: Validate the node and return the node's ACPI name.
 587  *
 588  ******************************************************************************/
 589
 590 char *acpi_ut_get_node_name(void *object)
 591 {
 592         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 593
 594         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
 595
 596         if (!object) {
 597                 return ("NULL");
 598         }
 599
 600         /* Check for Root node */
 601
 602         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
 603                 return ("\"\\\" ");
 604         }
 605
 606         /* Descriptor must be a namespace node */
 607
 608         if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
 609                 return ("####");
 610         }
 611
 612         /* Name must be a valid ACPI name */
 613
 614         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
 615                 node->name.integer = acpi_ut_repair_name(node->name.integer);
 616         }
 617
 618         /* Return the name */
 619
 620         return (node->name.ascii);
 621 }
 622
 623 /*******************************************************************************
 624  *
 625  * FUNCTION:    acpi_ut_get_descriptor_name
 626  *
 627  * PARAMETERS:  Object               - An ACPI object
 628  *
 629  * RETURN:      Pointer to a string
 630  *
 631  * DESCRIPTION: Validate object and return the descriptor type
 632  *
 633  ******************************************************************************/
 634
 635 /* Printable names of object descriptor types */
 636
 637 static const char *acpi_gbl_desc_type_names[] = {
 638         /* 00 */ "Invalid",
 639         /* 01 */ "Cached",
 640         /* 02 */ "State-Generic",
 641         /* 03 */ "State-Update",
 642         /* 04 */ "State-Package",
 643         /* 05 */ "State-Control",
 644         /* 06 */ "State-RootParseScope",
 645         /* 07 */ "State-ParseScope",
 646         /* 08 */ "State-WalkScope",
 647         /* 09 */ "State-Result",
 648         /* 10 */ "State-Notify",
 649         /* 11 */ "State-Thread",
 650         /* 12 */ "Walk",
 651         /* 13 */ "Parser",
 652         /* 14 */ "Operand",
 653         /* 15 */ "Node"
 654 };
 655
 656 char *acpi_ut_get_descriptor_name(void *object)
 657 {
 658
 659         if (!object) {
 660                 return ("NULL OBJECT");
 661         }
 662
 663         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
 664                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 665         }
 666
 667         return (ACPI_CAST_PTR(char,
 668                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
 669                                                        (object)]));
 670
 671 }
 672
 673 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 674 /*
 675  * Strings and procedures used for debug only
 676  */
 677
 678 /*******************************************************************************
 679  *
 680  * FUNCTION:    acpi_ut_get_mutex_name
 681  *
 682  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 683  *
 684  * RETURN:      String containing the name of the mutex. Always returns a valid
 685  *              pointer.
 686  *
 687  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 688  *
 689  ******************************************************************************/
 690
 691 char *acpi_ut_get_mutex_name(u32 mutex_id)
 692 {
 693
 694         if (mutex_id > ACPI_MAX_MUTEX) {
 695                 return ("Invalid Mutex ID");
 696         }
 697
 698         return (acpi_gbl_mutex_names[mutex_id]);
 699 }
 700 #endif
 701
 702 /*******************************************************************************
 703  *
 704  * FUNCTION:    acpi_ut_valid_object_type
 705  *
 706  * PARAMETERS:  Type            - Object type to be validated
 707  *
 708  * RETURN:      TRUE if valid object type, FALSE otherwise
 709  *
 710  * DESCRIPTION: Validate an object type
 711  *
 712  ******************************************************************************/
 713
 714 u8 acpi_ut_valid_object_type(acpi_object_type type)
 715 {
 716
 717         if (type > ACPI_TYPE_LOCAL_MAX) {
 718
 719                 /* Note: Assumes all TYPEs are contiguous (external/local) */
 720
 721                 return (FALSE);
 722         }
 723
 724         return (TRUE);
 725 }
 726
 727 /*******************************************************************************
 728  *
 729  * FUNCTION:    acpi_ut_init_globals
 730  *
 731  * PARAMETERS:  None
 732  *
 733  * RETURN:      None
 734  *
 735  * DESCRIPTION: Init library globals.  All globals that require specific
 736  *              initialization should be initialized here!
 737  *
 738  ******************************************************************************/
 739
 740 void acpi_ut_init_globals(void)
 741 {
 742         acpi_status status;
 743         u32 i;
 744
 745         ACPI_FUNCTION_TRACE(ut_init_globals);
 746
 747         /* Create all memory caches */
 748
 749         status = acpi_ut_create_caches();
 750         if (ACPI_FAILURE(status)) {
 751                 return;
 752         }
 753
 754         /* ACPI table structure */
 755
 756         for (i = 0; i < (ACPI_TABLE_ID_MAX + 1); i++) {
 757                 acpi_gbl_table_lists[i].next = NULL;
 758                 acpi_gbl_table_lists[i].count = 0;
 759         }
 760
 761         /* Mutex locked flags */
 762
 763         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 764                 acpi_gbl_mutex_info[i].mutex = NULL;
 765                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 766                 acpi_gbl_mutex_info[i].use_count = 0;
 767         }
 768
 769         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 770                 acpi_gbl_owner_id_mask[i] = 0;
 771         }
 772         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
 773
 774         /* GPE support */
 775
 776         acpi_gbl_gpe_xrupt_list_head = NULL;
 777         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 778         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 779
 780         /* Global notify handlers */
 781
 782         acpi_gbl_system_notify.handler = NULL;
 783         acpi_gbl_device_notify.handler = NULL;
 784         acpi_gbl_exception_handler = NULL;
 785         acpi_gbl_init_handler = NULL;
 786
 787         /* Global "typed" ACPI table pointers */
 788
 789         acpi_gbl_RSDP = NULL;
 790         acpi_gbl_XSDT = NULL;
 791         acpi_gbl_FACS = NULL;
 792         acpi_gbl_FADT = NULL;
 793         acpi_gbl_DSDT = NULL;
 794
 795         /* Global Lock support */
 796
 797         acpi_gbl_global_lock_semaphore = NULL;
 798         acpi_gbl_global_lock_mutex = NULL;
 799         acpi_gbl_global_lock_acquired = FALSE;
 800         acpi_gbl_global_lock_handle = 0;
 801
 802         /* Miscellaneous variables */
 803
 804         acpi_gbl_table_flags = ACPI_PHYSICAL_POINTER;
 805         acpi_gbl_rsdp_original_location = 0;
 806         acpi_gbl_cm_single_step = FALSE;
 807         acpi_gbl_db_terminate_threads = FALSE;
 808         acpi_gbl_shutdown = FALSE;
 809         acpi_gbl_ns_lookup_count = 0;
 810         acpi_gbl_ps_find_count = 0;
 811         acpi_gbl_acpi_hardware_present = TRUE;
 812         acpi_gbl_last_owner_id_index = 0;
 813         acpi_gbl_next_owner_id_offset = 0;
 814         acpi_gbl_trace_method_name = 0;
 815         acpi_gbl_trace_dbg_level = 0;
 816         acpi_gbl_trace_dbg_layer = 0;
 817         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 818         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 819
 820         /* Hardware oriented */
 821
 822         acpi_gbl_events_initialized = FALSE;
 823         acpi_gbl_system_awake_and_running = TRUE;
 824
 825         /* Namespace */
 826
 827         acpi_gbl_root_node = NULL;
 828         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 829         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 830         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 831         acpi_gbl_root_node_struct.child = NULL;
 832         acpi_gbl_root_node_struct.peer = NULL;
 833         acpi_gbl_root_node_struct.object = NULL;
 834         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 835
 836 #ifdef ACPI_DEBUG_OUTPUT
 837         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
 838 #endif
 839
 840         return_VOID;
 841 }
 842
 843 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 844 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)