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 - 2007, 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  * Static global variable initialization.
  56  *
  57  ******************************************************************************/
  58
  59 /*
  60  * We want the debug switches statically initialized so they
  61  * are already set when the debugger is entered.
  62  */
  63
  64 /* Debug switch - level and trace mask */
  65 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
  66
  67 /* Debug switch - layer (component) mask */
  68
  69 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
  70 u32 acpi_gbl_nesting_level = 0;
  71
  72 /* Debugger globals */
  73
  74 u8 acpi_gbl_db_terminate_threads = FALSE;
  75 u8 acpi_gbl_abort_method = FALSE;
  76 u8 acpi_gbl_method_executing = FALSE;
  77
  78 /* System flags */
  79
  80 u32 acpi_gbl_startup_flags = 0;
  81
  82 /* System starts uninitialized */
  83
  84 u8 acpi_gbl_shutdown = TRUE;
  85
  86 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
  87         "\\_S0_",
  88         "\\_S1_",
  89         "\\_S2_",
  90         "\\_S3_",
  91         "\\_S4_",
  92         "\\_S5_"
  93 };
  94
  95 const char *acpi_gbl_highest_dstate_names[4] = {
  96         "_S1D",
  97         "_S2D",
  98         "_S3D",
  99         "_S4D"
 100 };
 101
 102 /*******************************************************************************
 103  *
 104  * FUNCTION:    acpi_format_exception
 105  *
 106  * PARAMETERS:  Status       - The acpi_status code to be formatted
 107  *
 108  * RETURN:      A string containing the exception text. A valid pointer is
 109  *              always returned.
 110  *
 111  * DESCRIPTION: This function translates an ACPI exception into an ASCII string
 112  *              It is here instead of utxface.c so it is always present.
 113  *
 114  ******************************************************************************/
 115
 116 const char *acpi_format_exception(acpi_status status)
 117 {
 118         const char *exception = NULL;
 119
 120         ACPI_FUNCTION_ENTRY();
 121
 122         exception = acpi_ut_validate_exception(status);
 123         if (!exception) {
 124
 125                 /* Exception code was not recognized */
 126
 127                 ACPI_ERROR((AE_INFO,
 128                             "Unknown exception code: 0x%8.8X", status));
 129
 130                 exception = "UNKNOWN_STATUS_CODE";
 131         }
 132
 133         return (ACPI_CAST_PTR(const char, exception));
 134 }
 135
 136 ACPI_EXPORT_SYMBOL(acpi_format_exception)
 137
 138 /*******************************************************************************
 139  *
 140  * Namespace globals
 141  *
 142  ******************************************************************************/
 143 /*
 144  * Predefined ACPI Names (Built-in to the Interpreter)
 145  *
 146  * NOTES:
 147  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
 148  *    during the initialization sequence.
 149  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
 150  *    perform a Notify() operation on it.
 151  */
 152 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
 153         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
 154         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 155         {"_SB_", ACPI_TYPE_DEVICE, NULL},
 156         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
 157         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
 158         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
 159         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
 160         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
 161
 162 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
 163         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
 164 #endif
 165
 166         /* Table terminator */
 167
 168         {NULL, ACPI_TYPE_ANY, NULL}
 169 };
 170
 171 /*
 172  * Properties of the ACPI Object Types, both internal and external.
 173  * The table is indexed by values of acpi_object_type
 174  */
 175 const u8 acpi_gbl_ns_properties[] = {
 176         ACPI_NS_NORMAL,         /* 00 Any              */
 177         ACPI_NS_NORMAL,         /* 01 Number           */
 178         ACPI_NS_NORMAL,         /* 02 String           */
 179         ACPI_NS_NORMAL,         /* 03 Buffer           */
 180         ACPI_NS_NORMAL,         /* 04 Package          */
 181         ACPI_NS_NORMAL,         /* 05 field_unit       */
 182         ACPI_NS_NEWSCOPE,       /* 06 Device           */
 183         ACPI_NS_NORMAL,         /* 07 Event            */
 184         ACPI_NS_NEWSCOPE,       /* 08 Method           */
 185         ACPI_NS_NORMAL,         /* 09 Mutex            */
 186         ACPI_NS_NORMAL,         /* 10 Region           */
 187         ACPI_NS_NEWSCOPE,       /* 11 Power            */
 188         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
 189         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
 190         ACPI_NS_NORMAL,         /* 14 buffer_field     */
 191         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
 192         ACPI_NS_NORMAL,         /* 16 Debug Object     */
 193         ACPI_NS_NORMAL,         /* 17 def_field        */
 194         ACPI_NS_NORMAL,         /* 18 bank_field       */
 195         ACPI_NS_NORMAL,         /* 19 index_field      */
 196         ACPI_NS_NORMAL,         /* 20 Reference        */
 197         ACPI_NS_NORMAL,         /* 21 Alias            */
 198         ACPI_NS_NORMAL,         /* 22 method_alias     */
 199         ACPI_NS_NORMAL,         /* 23 Notify           */
 200         ACPI_NS_NORMAL,         /* 24 Address Handler  */
 201         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
 202         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
 203         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
 204         ACPI_NS_NORMAL,         /* 28 Extra            */
 205         ACPI_NS_NORMAL,         /* 29 Data             */
 206         ACPI_NS_NORMAL          /* 30 Invalid          */
 207 };
 208
 209 /* Hex to ASCII conversion table */
 210
 211 static const char acpi_gbl_hex_to_ascii[] = {
 212         '0', '1', '2', '3', '4', '5', '6', '7',
 213         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 214 };
 215
 216 /*******************************************************************************
 217  *
 218  * FUNCTION:    acpi_ut_hex_to_ascii_char
 219  *
 220  * PARAMETERS:  Integer             - Contains the hex digit
 221  *              Position            - bit position of the digit within the
 222  *                                    integer (multiple of 4)
 223  *
 224  * RETURN:      The converted Ascii character
 225  *
 226  * DESCRIPTION: Convert a hex digit to an Ascii character
 227  *
 228  ******************************************************************************/
 229
 230 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
 231 {
 232
 233         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
 234 }
 235
 236 /******************************************************************************
 237  *
 238  * Event and Hardware globals
 239  *
 240  ******************************************************************************/
 241
 242 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
 243         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
 244
 245         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
 246                                                 ACPI_BITPOSITION_TIMER_STATUS,
 247                                                 ACPI_BITMASK_TIMER_STATUS},
 248         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
 249                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
 250                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
 251         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 252                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
 253                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
 254         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 255                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
 256                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
 257         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
 258                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
 259                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
 260         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
 261                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
 262                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
 263         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
 264                                                 ACPI_BITPOSITION_WAKE_STATUS,
 265                                                 ACPI_BITMASK_WAKE_STATUS},
 266         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
 267                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
 268                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
 269
 270         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
 271                                                 ACPI_BITPOSITION_TIMER_ENABLE,
 272                                                 ACPI_BITMASK_TIMER_ENABLE},
 273         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
 274                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
 275                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 276         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 277                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
 278                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
 279         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 280                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
 281                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 282         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
 283                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
 284                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
 285         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
 286         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
 287                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
 288                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 289
 290         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
 291                                                 ACPI_BITPOSITION_SCI_ENABLE,
 292                                                 ACPI_BITMASK_SCI_ENABLE},
 293         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
 294                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
 295                                                 ACPI_BITMASK_BUS_MASTER_RLD},
 296         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
 297                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
 298                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
 299         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
 300                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 301                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 302         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
 303                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
 304                                                 ACPI_BITMASK_SLEEP_TYPE_X},
 305         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
 306                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
 307                                                 ACPI_BITMASK_SLEEP_ENABLE},
 308
 309         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
 310                                                 ACPI_BITPOSITION_ARB_DISABLE,
 311                                                 ACPI_BITMASK_ARB_DISABLE}
 312 };
 313
 314 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
 315         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
 316                                         ACPI_BITREG_TIMER_ENABLE,
 317                                         ACPI_BITMASK_TIMER_STATUS,
 318                                         ACPI_BITMASK_TIMER_ENABLE},
 319         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
 320                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
 321                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
 322                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
 323         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
 324                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
 325                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
 326                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
 327         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
 328                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
 329                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
 330                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
 331         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
 332                                         ACPI_BITREG_RT_CLOCK_ENABLE,
 333                                         ACPI_BITMASK_RT_CLOCK_STATUS,
 334                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
 335 };
 336
 337 /*******************************************************************************
 338  *
 339  * FUNCTION:    acpi_ut_get_region_name
 340  *
 341  * PARAMETERS:  None.
 342  *
 343  * RETURN:      Status
 344  *
 345  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 346  *
 347  ******************************************************************************/
 348
 349 /* Region type decoding */
 350
 351 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
 352         "SystemMemory",
 353         "SystemIO",
 354         "PCI_Config",
 355         "EmbeddedControl",
 356         "SMBus",
 357         "CMOS",
 358         "PCIBARTarget",
 359         "DataTable"
 360 };
 361
 362 char *acpi_ut_get_region_name(u8 space_id)
 363 {
 364
 365         if (space_id >= ACPI_USER_REGION_BEGIN) {
 366                 return ("UserDefinedRegion");
 367         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
 368                 return ("InvalidSpaceId");
 369         }
 370
 371         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
 372 }
 373
 374 /*******************************************************************************
 375  *
 376  * FUNCTION:    acpi_ut_get_event_name
 377  *
 378  * PARAMETERS:  None.
 379  *
 380  * RETURN:      Status
 381  *
 382  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 383  *
 384  ******************************************************************************/
 385
 386 /* Event type decoding */
 387
 388 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
 389         "PM_Timer",
 390         "GlobalLock",
 391         "PowerButton",
 392         "SleepButton",
 393         "RealTimeClock",
 394 };
 395
 396 char *acpi_ut_get_event_name(u32 event_id)
 397 {
 398
 399         if (event_id > ACPI_EVENT_MAX) {
 400                 return ("InvalidEventID");
 401         }
 402
 403         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
 404 }
 405
 406 /*******************************************************************************
 407  *
 408  * FUNCTION:    acpi_ut_get_type_name
 409  *
 410  * PARAMETERS:  None.
 411  *
 412  * RETURN:      Status
 413  *
 414  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
 415  *
 416  ******************************************************************************/
 417
 418 /*
 419  * Elements of acpi_gbl_ns_type_names below must match
 420  * one-to-one with values of acpi_object_type
 421  *
 422  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
 423  * when stored in a table it really means that we have thus far seen no
 424  * evidence to indicate what type is actually going to be stored for this entry.
 425  */
 426 static const char acpi_gbl_bad_type[] = "UNDEFINED";
 427
 428 /* Printable names of the ACPI object types */
 429
 430 static const char *acpi_gbl_ns_type_names[] = {
 431         /* 00 */ "Untyped",
 432         /* 01 */ "Integer",
 433         /* 02 */ "String",
 434         /* 03 */ "Buffer",
 435         /* 04 */ "Package",
 436         /* 05 */ "FieldUnit",
 437         /* 06 */ "Device",
 438         /* 07 */ "Event",
 439         /* 08 */ "Method",
 440         /* 09 */ "Mutex",
 441         /* 10 */ "Region",
 442         /* 11 */ "Power",
 443         /* 12 */ "Processor",
 444         /* 13 */ "Thermal",
 445         /* 14 */ "BufferField",
 446         /* 15 */ "DdbHandle",
 447         /* 16 */ "DebugObject",
 448         /* 17 */ "RegionField",
 449         /* 18 */ "BankField",
 450         /* 19 */ "IndexField",
 451         /* 20 */ "Reference",
 452         /* 21 */ "Alias",
 453         /* 22 */ "MethodAlias",
 454         /* 23 */ "Notify",
 455         /* 24 */ "AddrHandler",
 456         /* 25 */ "ResourceDesc",
 457         /* 26 */ "ResourceFld",
 458         /* 27 */ "Scope",
 459         /* 28 */ "Extra",
 460         /* 29 */ "Data",
 461         /* 30 */ "Invalid"
 462 };
 463
 464 char *acpi_ut_get_type_name(acpi_object_type type)
 465 {
 466
 467         if (type > ACPI_TYPE_INVALID) {
 468                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 469         }
 470
 471         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
 472 }
 473
 474 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 475 {
 476
 477         if (!obj_desc) {
 478                 return ("[NULL Object Descriptor]");
 479         }
 480
 481         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
 482 }
 483
 484 /*******************************************************************************
 485  *
 486  * FUNCTION:    acpi_ut_get_node_name
 487  *
 488  * PARAMETERS:  Object               - A namespace node
 489  *
 490  * RETURN:      Pointer to a string
 491  *
 492  * DESCRIPTION: Validate the node and return the node's ACPI name.
 493  *
 494  ******************************************************************************/
 495
 496 char *acpi_ut_get_node_name(void *object)
 497 {
 498         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 499
 500         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
 501
 502         if (!object) {
 503                 return ("NULL");
 504         }
 505
 506         /* Check for Root node */
 507
 508         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
 509                 return ("\"\\\" ");
 510         }
 511
 512         /* Descriptor must be a namespace node */
 513
 514         if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
 515                 return ("####");
 516         }
 517
 518         /* Name must be a valid ACPI name */
 519
 520         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
 521                 node->name.integer = acpi_ut_repair_name(node->name.ascii);
 522         }
 523
 524         /* Return the name */
 525
 526         return (node->name.ascii);
 527 }
 528
 529 /*******************************************************************************
 530  *
 531  * FUNCTION:    acpi_ut_get_descriptor_name
 532  *
 533  * PARAMETERS:  Object               - An ACPI object
 534  *
 535  * RETURN:      Pointer to a string
 536  *
 537  * DESCRIPTION: Validate object and return the descriptor type
 538  *
 539  ******************************************************************************/
 540
 541 /* Printable names of object descriptor types */
 542
 543 static const char *acpi_gbl_desc_type_names[] = {
 544         /* 00 */ "Invalid",
 545         /* 01 */ "Cached",
 546         /* 02 */ "State-Generic",
 547         /* 03 */ "State-Update",
 548         /* 04 */ "State-Package",
 549         /* 05 */ "State-Control",
 550         /* 06 */ "State-RootParseScope",
 551         /* 07 */ "State-ParseScope",
 552         /* 08 */ "State-WalkScope",
 553         /* 09 */ "State-Result",
 554         /* 10 */ "State-Notify",
 555         /* 11 */ "State-Thread",
 556         /* 12 */ "Walk",
 557         /* 13 */ "Parser",
 558         /* 14 */ "Operand",
 559         /* 15 */ "Node"
 560 };
 561
 562 char *acpi_ut_get_descriptor_name(void *object)
 563 {
 564
 565         if (!object) {
 566                 return ("NULL OBJECT");
 567         }
 568
 569         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
 570                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
 571         }
 572
 573         return (ACPI_CAST_PTR(char,
 574                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
 575                                                        (object)]));
 576
 577 }
 578
 579 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 580 /*
 581  * Strings and procedures used for debug only
 582  */
 583
 584 /*******************************************************************************
 585  *
 586  * FUNCTION:    acpi_ut_get_mutex_name
 587  *
 588  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
 589  *
 590  * RETURN:      String containing the name of the mutex. Always returns a valid
 591  *              pointer.
 592  *
 593  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 594  *
 595  ******************************************************************************/
 596
 597 char *acpi_ut_get_mutex_name(u32 mutex_id)
 598 {
 599
 600         if (mutex_id > ACPI_MAX_MUTEX) {
 601                 return ("Invalid Mutex ID");
 602         }
 603
 604         return (acpi_gbl_mutex_names[mutex_id]);
 605 }
 606 #endif
 607
 608 /*******************************************************************************
 609  *
 610  * FUNCTION:    acpi_ut_valid_object_type
 611  *
 612  * PARAMETERS:  Type            - Object type to be validated
 613  *
 614  * RETURN:      TRUE if valid object type, FALSE otherwise
 615  *
 616  * DESCRIPTION: Validate an object type
 617  *
 618  ******************************************************************************/
 619
 620 u8 acpi_ut_valid_object_type(acpi_object_type type)
 621 {
 622
 623         if (type > ACPI_TYPE_LOCAL_MAX) {
 624
 625                 /* Note: Assumes all TYPEs are contiguous (external/local) */
 626
 627                 return (FALSE);
 628         }
 629
 630         return (TRUE);
 631 }
 632
 633 /*******************************************************************************
 634  *
 635  * FUNCTION:    acpi_ut_init_globals
 636  *
 637  * PARAMETERS:  None
 638  *
 639  * RETURN:      None
 640  *
 641  * DESCRIPTION: Init library globals.  All globals that require specific
 642  *              initialization should be initialized here!
 643  *
 644  ******************************************************************************/
 645
 646 void acpi_ut_init_globals(void)
 647 {
 648         acpi_status status;
 649         u32 i;
 650
 651         ACPI_FUNCTION_TRACE(ut_init_globals);
 652
 653         /* Create all memory caches */
 654
 655         status = acpi_ut_create_caches();
 656         if (ACPI_FAILURE(status)) {
 657                 return;
 658         }
 659
 660         /* Mutex locked flags */
 661
 662         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
 663                 acpi_gbl_mutex_info[i].mutex = NULL;
 664                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
 665                 acpi_gbl_mutex_info[i].use_count = 0;
 666         }
 667
 668         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
 669                 acpi_gbl_owner_id_mask[i] = 0;
 670         }
 671         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
 672
 673         /* GPE support */
 674
 675         acpi_gpe_count = 0;
 676         acpi_gbl_gpe_xrupt_list_head = NULL;
 677         acpi_gbl_gpe_fadt_blocks[0] = NULL;
 678         acpi_gbl_gpe_fadt_blocks[1] = NULL;
 679
 680         /* Global notify handlers */
 681
 682         acpi_gbl_system_notify.handler = NULL;
 683         acpi_gbl_device_notify.handler = NULL;
 684         acpi_gbl_exception_handler = NULL;
 685         acpi_gbl_init_handler = NULL;
 686
 687         /* Global Lock support */
 688
 689         acpi_gbl_global_lock_semaphore = NULL;
 690         acpi_gbl_global_lock_mutex = NULL;
 691         acpi_gbl_global_lock_acquired = FALSE;
 692         acpi_gbl_global_lock_handle = 0;
 693
 694         /* Miscellaneous variables */
 695
 696         acpi_gbl_cm_single_step = FALSE;
 697         acpi_gbl_db_terminate_threads = FALSE;
 698         acpi_gbl_shutdown = FALSE;
 699         acpi_gbl_ns_lookup_count = 0;
 700         acpi_gbl_ps_find_count = 0;
 701         acpi_gbl_acpi_hardware_present = TRUE;
 702         acpi_gbl_last_owner_id_index = 0;
 703         acpi_gbl_next_owner_id_offset = 0;
 704         acpi_gbl_trace_method_name = 0;
 705         acpi_gbl_trace_dbg_level = 0;
 706         acpi_gbl_trace_dbg_layer = 0;
 707         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 708         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 709
 710         /* Hardware oriented */
 711
 712         acpi_gbl_events_initialized = FALSE;
 713         acpi_gbl_system_awake_and_running = TRUE;
 714
 715         /* Namespace */
 716
 717         acpi_gbl_root_node = NULL;
 718         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
 719         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
 720         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
 721         acpi_gbl_root_node_struct.child = NULL;
 722         acpi_gbl_root_node_struct.peer = NULL;
 723         acpi_gbl_root_node_struct.object = NULL;
 724         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 725
 726 #ifdef ACPI_DEBUG_OUTPUT
 727         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
 728 #endif
 729
 730 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 731         acpi_gbl_display_final_mem_stats = FALSE;
 732 #endif
 733
 734         return_VOID;
 735 }
 736
 737 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 738 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
 739 ACPI_EXPORT_SYMBOL(acpi_gpe_count)