git.oblomov.eu Git - linux-2.6/blob - 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 <linux/module.h>
  47 #include <acpi/acpi.h>
  48 #include <acpi/acnamesp.h>
  49
  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                 /* 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 EXPORT_SYMBOL(acpi_dbg_level);
 147
 148 /* Debug switch - layer (component) mask */
 149
 150 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
 151 EXPORT_SYMBOL(acpi_dbg_layer);
 152 u32 acpi_gbl_nesting_level = 0;
 153
 154 /* Debugger globals */
 155
 156 u8 acpi_gbl_db_terminate_threads = FALSE;
 157 u8 acpi_gbl_abort_method = FALSE;
 158 u8 acpi_gbl_method_executing = FALSE;
 159
 160 /* System flags */
 161
 162 u32 acpi_gbl_startup_flags = 0;
 163
 164 /* System starts uninitialized */
 165
 166 u8 acpi_gbl_shutdown = TRUE;
 167
 168 const u8 acpi_gbl_decode_to8bit[8] = { 1, 2, 4, 8, 16, 32, 64, 128 };
 169
 170 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
 171         "\\_S0_",
 172         "\\_S1_",
 173         "\\_S2_",
 174         "\\_S3_",
 175         "\\_S4_",
 176         "\\_S5_"
 177 };
 178
 179 const char *acpi_gbl_highest_dstate_names[4] = {
 180         "_S1D",
 181         "_S2D",
 182         "_S3D",
 183         "_S4D"
 184 };
 185
 186 /*
 187  * Strings supported by the _OSI predefined (internal) method.
 188  * When adding strings, be sure to update ACPI_NUM_OSI_STRINGS.
 189  */
 190 const char *acpi_gbl_valid_osi_strings[ACPI_NUM_OSI_STRINGS] = {
 191         /* Operating System Vendor Strings */
 192
 193         "Linux",
 194         "Windows 2000",
 195         "Windows 2001",
 196         "Windows 2001.1",
 197         "Windows 2001 SP0",
 198         "Windows 2001 SP1",
 199         "Windows 2001 SP2",
 200         "Windows 2001 SP3",
 201         "Windows 2001 SP4",
 202
 203         /* Feature Group Strings */
 204
 205         "Extended Address Space Descriptor"
 206 };
 207
 208 /*******************************************************************************
 209  *
 210  * Namespace globals
 211  *
 212  ******************************************************************************/
 213
 214 /*
 215  * Predefined ACPI Names (Built-in to the Interpreter)
 216  *
 217  * NOTES:
 218  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 219  *    during the initialization sequence.
 220  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 221  *    perform a Notify() operation on it.
 222  */
 223 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 224         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 225         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 226         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 227         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 228         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
 229         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 230         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 231         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 232
 233 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 234         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 235 #endif
 236
 237         /* Table terminator */
 238
 239         {NULL, ACPI_TYPE_ANY, NULL}
 240 };
 241
 242 /*
 243  * Properties of the ACPI Object Types, both internal and external.
 244  * The table is indexed by values of acpi_object_type
 245  */
 246 const u8 acpi_gbl_ns_properties[] = {
 247         ACPI_NS_NORMAL,         /* 00 Any              */
 248         ACPI_NS_NORMAL,         /* 01 Number           */
 249         ACPI_NS_NORMAL,         /* 02 String           */
 250         ACPI_NS_NORMAL,         /* 03 Buffer           */
 251         ACPI_NS_NORMAL,         /* 04 Package          */
 252         ACPI_NS_NORMAL,         /* 05 field_unit       */
 253         ACPI_NS_NEWSCOPE,       /* 06 Device           */
 254         ACPI_NS_NORMAL,         /* 07 Event            */
 255         ACPI_NS_NEWSCOPE,       /* 08 Method           */
 256         ACPI_NS_NORMAL,         /* 09 Mutex            */
 257         ACPI_NS_NORMAL,         /* 10 Region           */
 258         ACPI_NS_NEWSCOPE,       /* 11 Power            */
 259         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
 260         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
 261         ACPI_NS_NORMAL,         /* 14 buffer_field     */
 262         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
 263         ACPI_NS_NORMAL,         /* 16 Debug Object     */
 264         ACPI_NS_NORMAL,         /* 17 def_field        */
 265         ACPI_NS_NORMAL,         /* 18 bank_field       */
 266         ACPI_NS_NORMAL,         /* 19 index_field      */
 267         ACPI_NS_NORMAL,         /* 20 Reference        */
 268         ACPI_NS_NORMAL,         /* 21 Alias            */
 269         ACPI_NS_NORMAL,         /* 22 method_alias     */
 270         ACPI_NS_NORMAL,         /* 23 Notify           */
 271         ACPI_NS_NORMAL,         /* 24 Address Handler  */
 272         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
 273         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
 274         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
 275         ACPI_NS_NORMAL,         /* 28 Extra            */
 276         ACPI_NS_NORMAL,         /* 29 Data             */
 277         ACPI_NS_NORMAL          /* 30 Invalid          */
 278 };
 279
 280 /* Hex to ASCII conversion table */
 281
 282 static const char acpi_gbl_hex_to_ascii[] = {
 283         '0', '1', '2', '3', '4', '5', '6', '7',
 284         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 285 };
 286
 287 /*******************************************************************************
 288  *
 289  * FUNCTION:    acpi_ut_hex_to_ascii_char
 290  *
 291  * PARAMETERS:  Integer             - Contains the hex digit
 292  *              Position            - bit position of the digit within the
 293  *                                    integer (multiple of 4)
 294  *
 295  * RETURN:      The converted Ascii character
 296  *
 297  * DESCRIPTION: Convert a hex digit to an Ascii character
 298  *
 299  ******************************************************************************/
 300
 301 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
 302 {
 303
 304         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 305 }
 306
 307 /*******************************************************************************
 308  *
 309  * Table name globals
 310  *
 311  * NOTE: This table includes ONLY the ACPI tables that the subsystem consumes.
 312  * it is NOT an exhaustive list of all possible ACPI tables.  All ACPI tables
 313  * that are not used by the subsystem are simply ignored.
 314  *
 315  * Do NOT add any table to this list that is not consumed directly by this
 316  * subsystem (No MADT, ECDT, SBST, etc.)
 317  *
 318  ******************************************************************************/
 319
 320 struct acpi_table_list acpi_gbl_table_lists[NUM_ACPI_TABLE_TYPES];
 321
 322 struct acpi_table_support acpi_gbl_table_data[NUM_ACPI_TABLE_TYPES] = {
 323         /***********    Name,   Signature, Global typed pointer     Signature size,      Type                  How many allowed?,    Contains valid AML? */
 324
 325         /* RSDP 0 */ {RSDP_NAME, RSDP_SIG, NULL, sizeof(RSDP_SIG) - 1,
 326                       ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
 327         ,
 328         /* DSDT 1 */ {DSDT_SIG, DSDT_SIG, (void *)&acpi_gbl_DSDT,
 329                       sizeof(DSDT_SIG) - 1,
 330                       ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE |
 331                       ACPI_TABLE_EXECUTABLE}
 332         ,
 333         /* FADT 2 */ {FADT_SIG, FADT_SIG, (void *)&acpi_gbl_FADT,
 334                       sizeof(FADT_SIG) - 1,
 335                       ACPI_TABLE_PRIMARY | ACPI_TABLE_SINGLE}
 336         ,
 337         /* FACS 3 */ {FACS_SIG, FACS_SIG, (void *)&acpi_gbl_FACS,
 338                       sizeof(FACS_SIG) - 1,
 339                       ACPI_TABLE_SECONDARY | ACPI_TABLE_SINGLE}
 340         ,
 341         /* PSDT 4 */ {PSDT_SIG, PSDT_SIG, NULL, sizeof(PSDT_SIG) - 1,
 342                       ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
 343                       ACPI_TABLE_EXECUTABLE}
 344         ,
 345         /* SSDT 5 */ {SSDT_SIG, SSDT_SIG, NULL, sizeof(SSDT_SIG) - 1,
 346                       ACPI_TABLE_PRIMARY | ACPI_TABLE_MULTIPLE |
 347                       ACPI_TABLE_EXECUTABLE}
 348         ,
 349         /* XSDT 6 */ {XSDT_SIG, XSDT_SIG, NULL, sizeof(RSDT_SIG) - 1,
 350                       ACPI_TABLE_ROOT | ACPI_TABLE_SINGLE}
 351         ,
 352 };
 353
 354 /******************************************************************************
 355  *
 356  * Event and Hardware globals
 357  *
 358  ******************************************************************************/
 359
 360 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 361         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 362
 363         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 364                                                 ACPI_BITPOSITION_TIMER_STATUS,
 365                                                 ACPI_BITMASK_TIMER_STATUS},
 366         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 367                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 368                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 369         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 370                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 371                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 372         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 373                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 374                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 375         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 376                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 377                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 378         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 379                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 380                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 381         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 382                                                 ACPI_BITPOSITION_WAKE_STATUS,
 383                                                 ACPI_BITMASK_WAKE_STATUS},
 384         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 385                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 386                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 387
 388         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 389                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 390                                                 ACPI_BITMASK_TIMER_ENABLE},
 391         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 392                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 393                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 394         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 395                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 396                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 397         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 398                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 399                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 400         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 401                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 402                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 403         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
 404         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 405                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 406                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 407
 408         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 409                                                 ACPI_BITPOSITION_SCI_ENABLE,
 410                                                 ACPI_BITMASK_SCI_ENABLE},
 411         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 412                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 413                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 414         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 415                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 416                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 417         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
 418                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 419                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 420         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
 421                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 422                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 423         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 424                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 425                                                 ACPI_BITMASK_SLEEP_ENABLE},
 426
 427         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 428                                                 ACPI_BITPOSITION_ARB_DISABLE,
 429                                                 ACPI_BITMASK_ARB_DISABLE}
 430 };
 431
 432 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 433         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 434                                         ACPI_BITREG_TIMER_ENABLE,
 435                                         ACPI_BITMASK_TIMER_STATUS,
 436                                         ACPI_BITMASK_TIMER_ENABLE},
 437         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 438                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 439                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 440                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 441         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 442                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 443                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 444                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 445         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 446                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 447                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 448                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 449         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 450                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 451                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 452                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 453 };
 454
 455 /*******************************************************************************
 456  *
 457  * FUNCTION:    acpi_ut_get_region_name
 458  *
 459  * PARAMETERS:  None.
 460  *
 461  * RETURN:      Status
 462  *
 463  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 464  *
 465  ******************************************************************************/
 466
 467 /* Region type decoding */
 468
 469 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 470 /*! [Begin] no source code translation (keep these ASL Keywords as-is) */
 471         "SystemMemory",
 472         "SystemIO",
 473         "PCI_Config",
 474         "EmbeddedControl",
 475         "SMBus",
 476         "CMOS",
 477         "PCIBARTarget",
 478         "DataTable"
 479 /*! [End] no source code translation !*/
 480 };
 481
 482 char *acpi_ut_get_region_name(u8 space_id)
 483 {
 484
 485         if (space_id >= ACPI_USER_REGION_BEGIN) {
 486                 return ("user_defined_region");
 487         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
 488                 return ("invalid_space_id");
 489         }
 490
 491         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
 492 }
 493
 494 /*******************************************************************************
 495  *
 496  * FUNCTION:    acpi_ut_get_event_name
 497  *
 498  * PARAMETERS:  None.
 499  *
 500  * RETURN:      Status
 501  *
 502  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 503  *
 504  ******************************************************************************/
 505
 506 /* Event type decoding */
 507
 508 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
 509 /*! [Begin] no source code translation (keep these strings as-is) */
 510         "PM_Timer",
 511         "GlobalLock",
 512         "PowerButton",
 513         "SleepButton",
 514         "RealTimeClock",
 515 /*! [End] no source code translation !*/
 516 };
 517
 518 char *acpi_ut_get_event_name(u32 event_id)
 519 {
 520
 521         if (event_id > ACPI_EVENT_MAX) {
 522                 return ("invalid_event_iD");
 523         }
 524
 525         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
 526 }
 527
 528 /*******************************************************************************
 529  *
 530  * FUNCTION:    acpi_ut_get_type_name
 531  *
 532  * PARAMETERS:  None.
 533  *
 534  * RETURN:      Status
 535  *
 536  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 537  *
 538  ******************************************************************************/
 539
 540 /*
 541  * Elements of acpi_gbl_ns_type_names below must match
 542  * one-to-one with values of acpi_object_type
 543  *
 544  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 545  * when stored in a table it really means that we have thus far seen no
 546  * evidence to indicate what type is actually going to be stored for this entry.
 547  */
 548 static const char acpi_gbl_bad_type[] = "UNDEFINED";
 549
 550 /* Printable names of the ACPI object types */
 551
 552 static const char *acpi_gbl_ns_type_names[] = {
 553 /*! [Begin] no source code translation (keep these strings as-is) */
 554         /* 00 */ "Untyped",
 555         /* 01 */ "Integer",
 556         /* 02 */ "String",
 557         /* 03 */ "Buffer",
 558         /* 04 */ "Package",
 559         /* 05 */ "FieldUnit",
 560         /* 06 */ "Device",
 561         /* 07 */ "Event",
 562         /* 08 */ "Method",
 563         /* 09 */ "Mutex",
 564         /* 10 */ "Region",
 565         /* 11 */ "Power",
 566         /* 12 */ "Processor",
 567         /* 13 */ "Thermal",
 568         /* 14 */ "BufferField",
 569         /* 15 */ "DdbHandle",
 570         /* 16 */ "DebugObject",
 571         /* 17 */ "RegionField",
 572         /* 18 */ "BankField",
 573         /* 19 */ "IndexField",
 574         /* 20 */ "Reference",
 575         /* 21 */ "Alias",
 576         /* 22 */ "MethodAlias",
 577         /* 23 */ "Notify",
 578         /* 24 */ "AddrHandler",
 579         /* 25 */ "ResourceDesc",
 580         /* 26 */ "ResourceFld",
 581         /* 27 */ "Scope",
 582         /* 28 */ "Extra",
 583         /* 29 */ "Data",
 584         /* 30 */ "Invalid"
 585 /*! [End] no source code translation !*/
 586 };
 587
 588 char *acpi_ut_get_type_name(acpi_object_type type)
 589 {
 590
 591         if (type > ACPI_TYPE_INVALID) {
 592                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 593         }
 594
 595         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
 596 }
 597
 598 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 599 {
 600
 601         if (!obj_desc) {
 602                 return ("[NULL Object Descriptor]");
 603         }
 604
 605         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
 606 }
 607
 608 /*******************************************************************************
 609  *
 610  * FUNCTION:    acpi_ut_get_node_name
 611  *
 612  * PARAMETERS:  Object               - A namespace node
 613  *
 614  * RETURN:      Pointer to a string
 615  *
 616  * DESCRIPTION: Validate the node and return the node's ACPI name.
 617  *
 618  ******************************************************************************/
 619
 620 char *acpi_ut_get_node_name(void *object)
 621 {
 622         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 623
 624         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
 625
 626         if (!object) {
 627                 return ("NULL");
 628         }
 629
 630         /* Check for Root node */
 631
 632         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
 633                 return ("\"\\\" ");
 634         }
 635
 636         /* Descriptor must be a namespace node */
 637
 638         if (node->descriptor != ACPI_DESC_TYPE_NAMED) {
 639                 return ("####");
 640         }
 641
 642         /* Name must be a valid ACPI name */
 643
 644         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
 645                 return ("????");
 646         }
 647
 648         /* Return the name */
 649
 650         return (node->name.ascii);
 651 }
 652
 653 /*******************************************************************************
 654  *
 655  * FUNCTION:    acpi_ut_get_descriptor_name
 656  *
 657  * PARAMETERS:  Object               - An ACPI object
 658  *
 659  * RETURN:      Pointer to a string
 660  *
 661  * DESCRIPTION: Validate object and return the descriptor type
 662  *
 663  ******************************************************************************/
 664
 665 /* Printable names of object descriptor types */
 666
 667 static const char *acpi_gbl_desc_type_names[] = {
 668 /*! [Begin] no source code translation (keep these ASL Keywords as-is) */
 669         /* 00 */ "Invalid",
 670         /* 01 */ "Cached",
 671         /* 02 */ "State-Generic",
 672         /* 03 */ "State-Update",
 673         /* 04 */ "State-Package",
 674         /* 05 */ "State-Control",
 675         /* 06 */ "State-RootParseScope",
 676         /* 07 */ "State-ParseScope",
 677         /* 08 */ "State-WalkScope",
 678         /* 09 */ "State-Result",
 679         /* 10 */ "State-Notify",
 680         /* 11 */ "State-Thread",
 681         /* 12 */ "Walk",
 682         /* 13 */ "Parser",
 683         /* 14 */ "Operand",
 684         /* 15 */ "Node"
 685 /*! [End] no source code translation !*/
 686 };
 687
 688 char *acpi_ut_get_descriptor_name(void *object)
 689 {
 690
 691         if (!object) {
 692                 return ("NULL OBJECT");
 693         }
 694
 695         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
 696                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 697         }
 698
 699         return (ACPI_CAST_PTR(char,
 700                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
 701                                                        (object)]));
 702
 703 }
 704
 705 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 706 /*
 707  * Strings and procedures used for debug only
 708  */
 709
 710 /*******************************************************************************
 711  *
 712  * FUNCTION:    acpi_ut_get_mutex_name
 713  *
 714  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 715  *
 716  * RETURN:      String containing the name of the mutex. Always returns a valid
 717  *              pointer.
 718  *
 719  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 720  *
 721  ******************************************************************************/
 722
 723 char *acpi_ut_get_mutex_name(u32 mutex_id)
 724 {
 725
 726         if (mutex_id > MAX_MUTEX) {
 727                 return ("Invalid Mutex ID");
 728         }
 729
 730         return (acpi_gbl_mutex_names[mutex_id]);
 731 }
 732 #endif
 733
 734 /*******************************************************************************
 735  *
 736  * FUNCTION:    acpi_ut_valid_object_type
 737  *
 738  * PARAMETERS:  Type            - Object type to be validated
 739  *
 740  * RETURN:      TRUE if valid object type, FALSE otherwise
 741  *
 742  * DESCRIPTION: Validate an object type
 743  *
 744  ******************************************************************************/
 745
 746 u8 acpi_ut_valid_object_type(acpi_object_type type)
 747 {
 748
 749         if (type > ACPI_TYPE_LOCAL_MAX) {
 750                 /* Note: Assumes all TYPEs are contiguous (external/local) */
 751
 752                 return (FALSE);
 753         }
 754
 755         return (TRUE);
 756 }
 757
 758 /*******************************************************************************
 759  *
 760  * FUNCTION:    acpi_ut_init_globals
 761  *
 762  * PARAMETERS:  None
 763  *
 764  * RETURN:      None
 765  *
 766  * DESCRIPTION: Init library globals.  All globals that require specific
 767  *              initialization should be initialized here!
 768  *
 769  ******************************************************************************/
 770
 771 void acpi_ut_init_globals(void)
 772 {
 773         acpi_status status;
 774         u32 i;
 775
 776         ACPI_FUNCTION_TRACE("ut_init_globals");
 777
 778         /* Create all memory caches */
 779
 780         status = acpi_ut_create_caches();
 781         if (ACPI_FAILURE(status)) {
 782                 return;
 783         }
 784
 785         /* ACPI table structure */
 786
 787         for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) {
 788                 acpi_gbl_table_lists[i].next = NULL;
 789                 acpi_gbl_table_lists[i].count = 0;
 790         }
 791
 792         /* Mutex locked flags */
 793
 794         for (i = 0; i < NUM_MUTEX; i++) {
 795                 acpi_gbl_mutex_info[i].mutex = NULL;
 796                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 797                 acpi_gbl_mutex_info[i].use_count = 0;
 798         }
 799
 800         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 801                 acpi_gbl_owner_id_mask[i] = 0;
 802         }
 803         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
 804
 805         /* GPE support */
 806
 807         acpi_gbl_gpe_xrupt_list_head = NULL;
 808         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 809         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 810
 811         /* Global notify handlers */
 812
 813         acpi_gbl_system_notify.handler = NULL;
 814         acpi_gbl_device_notify.handler = NULL;
 815         acpi_gbl_exception_handler = NULL;
 816         acpi_gbl_init_handler = NULL;
 817
 818         /* Global "typed" ACPI table pointers */
 819
 820         acpi_gbl_RSDP = NULL;
 821         acpi_gbl_XSDT = NULL;
 822         acpi_gbl_FACS = NULL;
 823         acpi_gbl_FADT = NULL;
 824         acpi_gbl_DSDT = NULL;
 825
 826         /* Global Lock support */
 827
 828         acpi_gbl_global_lock_acquired = FALSE;
 829         acpi_gbl_global_lock_thread_count = 0;
 830         acpi_gbl_global_lock_handle = 0;
 831
 832         /* Miscellaneous variables */
 833
 834         acpi_gbl_table_flags = ACPI_PHYSICAL_POINTER;
 835         acpi_gbl_rsdp_original_location = 0;
 836         acpi_gbl_cm_single_step = FALSE;
 837         acpi_gbl_db_terminate_threads = FALSE;
 838         acpi_gbl_shutdown = FALSE;
 839         acpi_gbl_ns_lookup_count = 0;
 840         acpi_gbl_ps_find_count = 0;
 841         acpi_gbl_acpi_hardware_present = TRUE;
 842         acpi_gbl_last_owner_id_index = 0;
 843         acpi_gbl_next_owner_id_offset = 0;
 844         acpi_gbl_trace_method_name = 0;
 845         acpi_gbl_trace_dbg_level = 0;
 846         acpi_gbl_trace_dbg_layer = 0;
 847         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 848         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 849
 850         /* Hardware oriented */
 851
 852         acpi_gbl_events_initialized = FALSE;
 853         acpi_gbl_system_awake_and_running = TRUE;
 854
 855         /* Namespace */
 856
 857         acpi_gbl_root_node = NULL;
 858         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 859         acpi_gbl_root_node_struct.descriptor = ACPI_DESC_TYPE_NAMED;
 860         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 861         acpi_gbl_root_node_struct.child = NULL;
 862         acpi_gbl_root_node_struct.peer = NULL;
 863         acpi_gbl_root_node_struct.object = NULL;
 864         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 865
 866 #ifdef ACPI_DEBUG_OUTPUT
 867         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
 868 #endif
 869
 870         return_VOID;
 871 }