drivers/acpi/acpica/dbinput.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: dbinput - user front-end to the AML debugger
   4  *
   5  ******************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2016, Intel Corp.
   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 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acdebug.h"
  47
  48 #ifdef ACPI_APPLICATION
  49 #include "acapps.h"
  50 #endif
  51
  52 #define _COMPONENT          ACPI_CA_DEBUGGER
  53 ACPI_MODULE_NAME("dbinput")
  54
  55 /* Local prototypes */
  56 static u32 acpi_db_get_line(char *input_buffer);
  57
  58 static u32 acpi_db_match_command(char *user_command);
  59
  60 static void acpi_db_display_command_info(const char *command, u8 display_all);
  61
  62 static void acpi_db_display_help(char *command);
  63
  64 static u8
  65 acpi_db_match_command_help(const char *command,
  66                            const struct acpi_db_command_help *help);
  67
  68 /*
  69  * Top-level debugger commands.
  70  *
  71  * This list of commands must match the string table below it
  72  */
  73 enum acpi_ex_debugger_commands {
  74         CMD_NOT_FOUND = 0,
  75         CMD_NULL,
  76         CMD_ALLOCATIONS,
  77         CMD_ARGS,
  78         CMD_ARGUMENTS,
  79         CMD_BREAKPOINT,
  80         CMD_BUSINFO,
  81         CMD_CALL,
  82         CMD_DEBUG,
  83         CMD_DISASSEMBLE,
  84         CMD_DISASM,
  85         CMD_DUMP,
  86         CMD_EVALUATE,
  87         CMD_EXECUTE,
  88         CMD_EXIT,
  89         CMD_FIND,
  90         CMD_GO,
  91         CMD_HANDLERS,
  92         CMD_HELP,
  93         CMD_HELP2,
  94         CMD_HISTORY,
  95         CMD_HISTORY_EXE,
  96         CMD_HISTORY_LAST,
  97         CMD_INFORMATION,
  98         CMD_INTEGRITY,
  99         CMD_INTO,
 100         CMD_LEVEL,
 101         CMD_LIST,
 102         CMD_LOCALS,
 103         CMD_LOCKS,
 104         CMD_METHODS,
 105         CMD_NAMESPACE,
 106         CMD_NOTIFY,
 107         CMD_OBJECTS,
 108         CMD_OSI,
 109         CMD_OWNER,
 110         CMD_PATHS,
 111         CMD_PREDEFINED,
 112         CMD_PREFIX,
 113         CMD_QUIT,
 114         CMD_REFERENCES,
 115         CMD_RESOURCES,
 116         CMD_RESULTS,
 117         CMD_SET,
 118         CMD_STATS,
 119         CMD_STOP,
 120         CMD_TABLES,
 121         CMD_TEMPLATE,
 122         CMD_TRACE,
 123         CMD_TREE,
 124         CMD_TYPE,
 125 #ifdef ACPI_APPLICATION
 126         CMD_ENABLEACPI,
 127         CMD_EVENT,
 128         CMD_GPE,
 129         CMD_GPES,
 130         CMD_SCI,
 131         CMD_SLEEP,
 132
 133         CMD_CLOSE,
 134         CMD_LOAD,
 135         CMD_OPEN,
 136         CMD_UNLOAD,
 137
 138         CMD_TERMINATE,
 139         CMD_THREADS,
 140
 141         CMD_TEST,
 142 #endif
 143 };
 144
 145 #define CMD_FIRST_VALID     2
 146
 147 /* Second parameter is the required argument count */
 148
 149 static const struct acpi_db_command_info acpi_gbl_db_commands[] = {
 150         {"<NOT FOUND>", 0},
 151         {"<NULL>", 0},
 152         {"ALLOCATIONS", 0},
 153         {"ARGS", 0},
 154         {"ARGUMENTS", 0},
 155         {"BREAKPOINT", 1},
 156         {"BUSINFO", 0},
 157         {"CALL", 0},
 158         {"DEBUG", 1},
 159         {"DISASSEMBLE", 1},
 160         {"DISASM", 1},
 161         {"DUMP", 1},
 162         {"EVALUATE", 1},
 163         {"EXECUTE", 1},
 164         {"EXIT", 0},
 165         {"FIND", 1},
 166         {"GO", 0},
 167         {"HANDLERS", 0},
 168         {"HELP", 0},
 169         {"?", 0},
 170         {"HISTORY", 0},
 171         {"!", 1},
 172         {"!!", 0},
 173         {"INFORMATION", 0},
 174         {"INTEGRITY", 0},
 175         {"INTO", 0},
 176         {"LEVEL", 0},
 177         {"LIST", 0},
 178         {"LOCALS", 0},
 179         {"LOCKS", 0},
 180         {"METHODS", 0},
 181         {"NAMESPACE", 0},
 182         {"NOTIFY", 2},
 183         {"OBJECTS", 0},
 184         {"OSI", 0},
 185         {"OWNER", 1},
 186         {"PATHS", 0},
 187         {"PREDEFINED", 0},
 188         {"PREFIX", 0},
 189         {"QUIT", 0},
 190         {"REFERENCES", 1},
 191         {"RESOURCES", 0},
 192         {"RESULTS", 0},
 193         {"SET", 3},
 194         {"STATS", 1},
 195         {"STOP", 0},
 196         {"TABLES", 0},
 197         {"TEMPLATE", 1},
 198         {"TRACE", 1},
 199         {"TREE", 0},
 200         {"TYPE", 1},
 201 #ifdef ACPI_APPLICATION
 202         {"ENABLEACPI", 0},
 203         {"EVENT", 1},
 204         {"GPE", 1},
 205         {"GPES", 0},
 206         {"SCI", 0},
 207         {"SLEEP", 0},
 208
 209         {"CLOSE", 0},
 210         {"LOAD", 1},
 211         {"OPEN", 1},
 212         {"UNLOAD", 1},
 213
 214         {"TERMINATE", 0},
 215         {"THREADS", 3},
 216
 217         {"TEST", 1},
 218 #endif
 219         {NULL, 0}
 220 };
 221
 222 /*
 223  * Help for all debugger commands. First argument is the number of lines
 224  * of help to output for the command.
 225  */
 226 static const struct acpi_db_command_help acpi_gbl_db_command_help[] = {
 227         {0, "\nGeneral-Purpose Commands:", "\n"},
 228         {1, "  Allocations", "Display list of current memory allocations\n"},
 229         {2, "  Dump <Address>|<Namepath>", "\n"},
 230         {0, "       [Byte|Word|Dword|Qword]",
 231          "Display ACPI objects or memory\n"},
 232         {1, "  Handlers", "Info about global handlers\n"},
 233         {1, "  Help [Command]", "This help screen or individual command\n"},
 234         {1, "  History", "Display command history buffer\n"},
 235         {1, "  Level <DebugLevel>] [console]",
 236          "Get/Set debug level for file or console\n"},
 237         {1, "  Locks", "Current status of internal mutexes\n"},
 238         {1, "  Osi [Install|Remove <name>]",
 239          "Display or modify global _OSI list\n"},
 240         {1, "  Quit or Exit", "Exit this command\n"},
 241         {8, "  Stats <SubCommand>",
 242          "Display namespace and memory statistics\n"},
 243         {1, "     Allocations", "Display list of current memory allocations\n"},
 244         {1, "     Memory", "Dump internal memory lists\n"},
 245         {1, "     Misc", "Namespace search and mutex stats\n"},
 246         {1, "     Objects", "Summary of namespace objects\n"},
 247         {1, "     Sizes", "Sizes for each of the internal objects\n"},
 248         {1, "     Stack", "Display CPU stack usage\n"},
 249         {1, "     Tables", "Info about current ACPI table(s)\n"},
 250         {1, "  Tables", "Display info about loaded ACPI tables\n"},
 251         {1, "  ! <CommandNumber>", "Execute command from history buffer\n"},
 252         {1, "  !!", "Execute last command again\n"},
 253
 254         {0, "\nNamespace Access Commands:", "\n"},
 255         {1, "  Businfo", "Display system bus info\n"},
 256         {1, "  Disassemble <Method>", "Disassemble a control method\n"},
 257         {1, "  Find <AcpiName> (? is wildcard)",
 258          "Find ACPI name(s) with wildcards\n"},
 259         {1, "  Integrity", "Validate namespace integrity\n"},
 260         {1, "  Methods", "Display list of loaded control methods\n"},
 261         {1, "  Namespace [Object] [Depth]",
 262          "Display loaded namespace tree/subtree\n"},
 263         {1, "  Notify <Object> <Value>", "Send a notification on Object\n"},
 264         {1, "  Objects [ObjectType]",
 265          "Display summary of all objects or just given type\n"},
 266         {1, "  Owner <OwnerId> [Depth]",
 267          "Display loaded namespace by object owner\n"},
 268         {1, "  Paths", "Display full pathnames of namespace objects\n"},
 269         {1, "  Predefined", "Check all predefined names\n"},
 270         {1, "  Prefix [<Namepath>]", "Set or Get current execution prefix\n"},
 271         {1, "  References <Addr>", "Find all references to object at addr\n"},
 272         {1, "  Resources [DeviceName]",
 273          "Display Device resources (no arg = all devices)\n"},
 274         {1, "  Set N <NamedObject> <Value>", "Set value for named integer\n"},
 275         {1, "  Template <Object>", "Format/dump a Buffer/ResourceTemplate\n"},
 276         {1, "  Type <Object>", "Display object type\n"},
 277
 278         {0, "\nControl Method Execution Commands:", "\n"},
 279         {1, "  Arguments (or Args)", "Display method arguments\n"},
 280         {1, "  Breakpoint <AmlOffset>", "Set an AML execution breakpoint\n"},
 281         {1, "  Call", "Run to next control method invocation\n"},
 282         {1, "  Debug <Namepath> [Arguments]", "Single Step a control method\n"},
 283         {6, "  Evaluate", "Synonym for Execute\n"},
 284         {5, "  Execute <Namepath> [Arguments]", "Execute control method\n"},
 285         {1, "     Hex Integer", "Integer method argument\n"},
 286         {1, "     \"Ascii String\"", "String method argument\n"},
 287         {1, "     (Hex Byte List)", "Buffer method argument\n"},
 288         {1, "     [Package Element List]", "Package method argument\n"},
 289         {1, "  Go", "Allow method to run to completion\n"},
 290         {1, "  Information", "Display info about the current method\n"},
 291         {1, "  Into", "Step into (not over) a method call\n"},
 292         {1, "  List [# of Aml Opcodes]", "Display method ASL statements\n"},
 293         {1, "  Locals", "Display method local variables\n"},
 294         {1, "  Results", "Display method result stack\n"},
 295         {1, "  Set <A|L> <#> <Value>", "Set method data (Arguments/Locals)\n"},
 296         {1, "  Stop", "Terminate control method\n"},
 297         {5, "  Trace <State> [<Namepath>] [Once]",
 298          "Trace control method execution\n"},
 299         {1, "     Enable", "Enable all messages\n"},
 300         {1, "     Disable", "Disable tracing\n"},
 301         {1, "     Method", "Enable method execution messages\n"},
 302         {1, "     Opcode", "Enable opcode execution messages\n"},
 303         {1, "  Tree", "Display control method calling tree\n"},
 304         {1, "  <Enter>", "Single step next AML opcode (over calls)\n"},
 305
 306 #ifdef ACPI_APPLICATION
 307         {0, "\nHardware Simulation Commands:", "\n"},
 308         {1, "  EnableAcpi", "Enable ACPI (hardware) mode\n"},
 309         {1, "  Event <F|G> <Value>", "Generate AcpiEvent (Fixed/GPE)\n"},
 310         {1, "  Gpe <GpeNum> [GpeBlockDevice]", "Simulate a GPE\n"},
 311         {1, "  Gpes", "Display info on all GPE devices\n"},
 312         {1, "  Sci", "Generate an SCI\n"},
 313         {1, "  Sleep [SleepState]", "Simulate sleep/wake sequence(s) (0-5)\n"},
 314
 315         {0, "\nFile I/O Commands:", "\n"},
 316         {1, "  Close", "Close debug output file\n"},
 317         {1, "  Load <Input Filename>", "Load ACPI table from a file\n"},
 318         {1, "  Open <Output Filename>", "Open a file for debug output\n"},
 319         {1, "  Unload <Namepath>",
 320          "Unload an ACPI table via namespace object\n"},
 321
 322         {0, "\nUser Space Commands:", "\n"},
 323         {1, "  Terminate", "Delete namespace and all internal objects\n"},
 324         {1, "  Thread <Threads><Loops><NamePath>",
 325          "Spawn threads to execute method(s)\n"},
 326
 327         {0, "\nDebug Test Commands:", "\n"},
 328         {3, "  Test <TestName>", "Invoke a debug test\n"},
 329         {1, "     Objects", "Read/write/compare all namespace data objects\n"},
 330         {1, "     Predefined",
 331          "Execute all ACPI predefined names (_STA, etc.)\n"},
 332 #endif
 333         {0, NULL, NULL}
 334 };
 335
 336 /*******************************************************************************
 337  *
 338  * FUNCTION:    acpi_db_match_command_help
 339  *
 340  * PARAMETERS:  command             - Command string to match
 341  *              help                - Help table entry to attempt match
 342  *
 343  * RETURN:      TRUE if command matched, FALSE otherwise
 344  *
 345  * DESCRIPTION: Attempt to match a command in the help table in order to
 346  *              print help information for a single command.
 347  *
 348  ******************************************************************************/
 349
 350 static u8
 351 acpi_db_match_command_help(const char *command,
 352                            const struct acpi_db_command_help *help)
 353 {
 354         char *invocation = help->invocation;
 355         u32 line_count;
 356
 357         /* Valid commands in the help table begin with a couple of spaces */
 358
 359         if (*invocation != ' ') {
 360                 return (FALSE);
 361         }
 362
 363         while (*invocation == ' ') {
 364                 invocation++;
 365         }
 366
 367         /* Match command name (full command or substring) */
 368
 369         while ((*command) && (*invocation) && (*invocation != ' ')) {
 370                 if (tolower((int)*command) != tolower((int)*invocation)) {
 371                         return (FALSE);
 372                 }
 373
 374                 invocation++;
 375                 command++;
 376         }
 377
 378         /* Print the appropriate number of help lines */
 379
 380         line_count = help->line_count;
 381         while (line_count) {
 382                 acpi_os_printf("%-38s : %s", help->invocation,
 383                                help->description);
 384                 help++;
 385                 line_count--;
 386         }
 387
 388         return (TRUE);
 389 }
 390
 391 /*******************************************************************************
 392  *
 393  * FUNCTION:    acpi_db_display_command_info
 394  *
 395  * PARAMETERS:  command             - Command string to match
 396  *              display_all         - Display all matching commands, or just
 397  *                                    the first one (substring match)
 398  *
 399  * RETURN:      None
 400  *
 401  * DESCRIPTION: Display help information for a Debugger command.
 402  *
 403  ******************************************************************************/
 404
 405 static void acpi_db_display_command_info(const char *command, u8 display_all)
 406 {
 407         const struct acpi_db_command_help *next;
 408         u8 matched;
 409
 410         next = acpi_gbl_db_command_help;
 411         while (next->invocation) {
 412                 matched = acpi_db_match_command_help(command, next);
 413                 if (!display_all && matched) {
 414                         return;
 415                 }
 416
 417                 next++;
 418         }
 419 }
 420
 421 /*******************************************************************************
 422  *
 423  * FUNCTION:    acpi_db_display_help
 424  *
 425  * PARAMETERS:  command             - Optional command string to display help.
 426  *                                    if not specified, all debugger command
 427  *                                    help strings are displayed
 428  *
 429  * RETURN:      None
 430  *
 431  * DESCRIPTION: Display help for a single debugger command, or all of them.
 432  *
 433  ******************************************************************************/
 434
 435 static void acpi_db_display_help(char *command)
 436 {
 437         const struct acpi_db_command_help *next = acpi_gbl_db_command_help;
 438
 439         if (!command) {
 440
 441                 /* No argument to help, display help for all commands */
 442
 443                 while (next->invocation) {
 444                         acpi_os_printf("%-38s%s", next->invocation,
 445                                        next->description);
 446                         next++;
 447                 }
 448         } else {
 449                 /* Display help for all commands that match the subtring */
 450
 451                 acpi_db_display_command_info(command, TRUE);
 452         }
 453 }
 454
 455 /*******************************************************************************
 456  *
 457  * FUNCTION:    acpi_db_get_next_token
 458  *
 459  * PARAMETERS:  string          - Command buffer
 460  *              next            - Return value, end of next token
 461  *
 462  * RETURN:      Pointer to the start of the next token.
 463  *
 464  * DESCRIPTION: Command line parsing. Get the next token on the command line
 465  *
 466  ******************************************************************************/
 467
 468 char *acpi_db_get_next_token(char *string,
 469                              char **next, acpi_object_type *return_type)
 470 {
 471         char *start;
 472         u32 depth;
 473         acpi_object_type type = ACPI_TYPE_INTEGER;
 474
 475         /* At end of buffer? */
 476
 477         if (!string || !(*string)) {
 478                 return (NULL);
 479         }
 480
 481         /* Remove any spaces at the beginning */
 482
 483         if (*string == ' ') {
 484                 while (*string && (*string == ' ')) {
 485                         string++;
 486                 }
 487
 488                 if (!(*string)) {
 489                         return (NULL);
 490                 }
 491         }
 492
 493         switch (*string) {
 494         case '"':
 495
 496                 /* This is a quoted string, scan until closing quote */
 497
 498                 string++;
 499                 start = string;
 500                 type = ACPI_TYPE_STRING;
 501
 502                 /* Find end of string */
 503
 504                 while (*string && (*string != '"')) {
 505                         string++;
 506                 }
 507                 break;
 508
 509         case '(':
 510
 511                 /* This is the start of a buffer, scan until closing paren */
 512
 513                 string++;
 514                 start = string;
 515                 type = ACPI_TYPE_BUFFER;
 516
 517                 /* Find end of buffer */
 518
 519                 while (*string && (*string != ')')) {
 520                         string++;
 521                 }
 522                 break;
 523
 524         case '[':
 525
 526                 /* This is the start of a package, scan until closing bracket */
 527
 528                 string++;
 529                 depth = 1;
 530                 start = string;
 531                 type = ACPI_TYPE_PACKAGE;
 532
 533                 /* Find end of package (closing bracket) */
 534
 535                 while (*string) {
 536
 537                         /* Handle String package elements */
 538
 539                         if (*string == '"') {
 540                                 /* Find end of string */
 541
 542                                 string++;
 543                                 while (*string && (*string != '"')) {
 544                                         string++;
 545                                 }
 546                                 if (!(*string)) {
 547                                         break;
 548                                 }
 549                         } else if (*string == '[') {
 550                                 depth++;        /* A nested package declaration */
 551                         } else if (*string == ']') {
 552                                 depth--;
 553                                 if (depth == 0) {       /* Found final package closing bracket */
 554                                         break;
 555                                 }
 556                         }
 557
 558                         string++;
 559                 }
 560                 break;
 561
 562         default:
 563
 564                 start = string;
 565
 566                 /* Find end of token */
 567
 568                 while (*string && (*string != ' ')) {
 569                         string++;
 570                 }
 571                 break;
 572         }
 573
 574         if (!(*string)) {
 575                 *next = NULL;
 576         } else {
 577                 *string = 0;
 578                 *next = string + 1;
 579         }
 580
 581         *return_type = type;
 582         return (start);
 583 }
 584
 585 /*******************************************************************************
 586  *
 587  * FUNCTION:    acpi_db_get_line
 588  *
 589  * PARAMETERS:  input_buffer        - Command line buffer
 590  *
 591  * RETURN:      Count of arguments to the command
 592  *
 593  * DESCRIPTION: Get the next command line from the user. Gets entire line
 594  *              up to the next newline
 595  *
 596  ******************************************************************************/
 597
 598 static u32 acpi_db_get_line(char *input_buffer)
 599 {
 600         u32 i;
 601         u32 count;
 602         char *next;
 603         char *this;
 604
 605         if (acpi_ut_safe_strcpy
 606             (acpi_gbl_db_parsed_buf, sizeof(acpi_gbl_db_parsed_buf),
 607              input_buffer)) {
 608                 acpi_os_printf
 609                     ("Buffer overflow while parsing input line (max %u characters)\n",
 610                      sizeof(acpi_gbl_db_parsed_buf));
 611                 return (0);
 612         }
 613
 614         this = acpi_gbl_db_parsed_buf;
 615         for (i = 0; i < ACPI_DEBUGGER_MAX_ARGS; i++) {
 616                 acpi_gbl_db_args[i] = acpi_db_get_next_token(this, &next,
 617                                                              &acpi_gbl_db_arg_types
 618                                                              [i]);
 619                 if (!acpi_gbl_db_args[i]) {
 620                         break;
 621                 }
 622
 623                 this = next;
 624         }
 625
 626         /* Uppercase the actual command */
 627
 628         acpi_ut_strupr(acpi_gbl_db_args[0]);
 629
 630         count = i;
 631         if (count) {
 632                 count--;        /* Number of args only */
 633         }
 634
 635         return (count);
 636 }
 637
 638 /*******************************************************************************
 639  *
 640  * FUNCTION:    acpi_db_match_command
 641  *
 642  * PARAMETERS:  user_command            - User command line
 643  *
 644  * RETURN:      Index into command array, -1 if not found
 645  *
 646  * DESCRIPTION: Search command array for a command match
 647  *
 648  ******************************************************************************/
 649
 650 static u32 acpi_db_match_command(char *user_command)
 651 {
 652         u32 i;
 653
 654         if (!user_command || user_command[0] == 0) {
 655                 return (CMD_NULL);
 656         }
 657
 658         for (i = CMD_FIRST_VALID; acpi_gbl_db_commands[i].name; i++) {
 659                 if (strstr
 660                     (ACPI_CAST_PTR(char, acpi_gbl_db_commands[i].name),
 661                      user_command) == acpi_gbl_db_commands[i].name) {
 662                         return (i);
 663                 }
 664         }
 665
 666         /* Command not recognized */
 667
 668         return (CMD_NOT_FOUND);
 669 }
 670
 671 /*******************************************************************************
 672  *
 673  * FUNCTION:    acpi_db_command_dispatch
 674  *
 675  * PARAMETERS:  input_buffer        - Command line buffer
 676  *              walk_state          - Current walk
 677  *              op                  - Current (executing) parse op
 678  *
 679  * RETURN:      Status
 680  *
 681  * DESCRIPTION: Command dispatcher.
 682  *
 683  ******************************************************************************/
 684
 685 acpi_status
 686 acpi_db_command_dispatch(char *input_buffer,
 687                          struct acpi_walk_state *walk_state,
 688                          union acpi_parse_object *op)
 689 {
 690         u32 temp;
 691         u32 command_index;
 692         u32 param_count;
 693         char *command_line;
 694         acpi_status status = AE_CTRL_TRUE;
 695
 696         /* If acpi_terminate has been called, terminate this thread */
 697
 698         if (acpi_gbl_db_terminate_loop) {
 699                 return (AE_CTRL_TERMINATE);
 700         }
 701
 702         /* Find command and add to the history buffer */
 703
 704         param_count = acpi_db_get_line(input_buffer);
 705         command_index = acpi_db_match_command(acpi_gbl_db_args[0]);
 706         temp = 0;
 707
 708         /*
 709          * We don't want to add the !! command to the history buffer. It
 710          * would cause an infinite loop because it would always be the
 711          * previous command.
 712          */
 713         if (command_index != CMD_HISTORY_LAST) {
 714                 acpi_db_add_to_history(input_buffer);
 715         }
 716
 717         /* Verify that we have the minimum number of params */
 718
 719         if (param_count < acpi_gbl_db_commands[command_index].min_args) {
 720                 acpi_os_printf
 721                     ("%u parameters entered, [%s] requires %u parameters\n",
 722                      param_count, acpi_gbl_db_commands[command_index].name,
 723                      acpi_gbl_db_commands[command_index].min_args);
 724
 725                 acpi_db_display_command_info(acpi_gbl_db_commands
 726                                              [command_index].name, FALSE);
 727                 return (AE_CTRL_TRUE);
 728         }
 729
 730         /* Decode and dispatch the command */
 731
 732         switch (command_index) {
 733         case CMD_NULL:
 734
 735                 if (op) {
 736                         return (AE_OK);
 737                 }
 738                 break;
 739
 740         case CMD_ALLOCATIONS:
 741
 742 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 743                 acpi_ut_dump_allocations((u32)-1, NULL);
 744 #endif
 745                 break;
 746
 747         case CMD_ARGS:
 748         case CMD_ARGUMENTS:
 749
 750                 acpi_db_display_arguments();
 751                 break;
 752
 753         case CMD_BREAKPOINT:
 754
 755                 acpi_db_set_method_breakpoint(acpi_gbl_db_args[1], walk_state,
 756                                               op);
 757                 break;
 758
 759         case CMD_BUSINFO:
 760
 761                 acpi_db_get_bus_info();
 762                 break;
 763
 764         case CMD_CALL:
 765
 766                 acpi_db_set_method_call_breakpoint(op);
 767                 status = AE_OK;
 768                 break;
 769
 770         case CMD_DEBUG:
 771
 772                 acpi_db_execute(acpi_gbl_db_args[1],
 773                                 &acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
 774                                 EX_SINGLE_STEP);
 775                 break;
 776
 777         case CMD_DISASSEMBLE:
 778         case CMD_DISASM:
 779
 780                 (void)acpi_db_disassemble_method(acpi_gbl_db_args[1]);
 781                 break;
 782
 783         case CMD_DUMP:
 784
 785                 acpi_db_decode_and_display_object(acpi_gbl_db_args[1],
 786                                                   acpi_gbl_db_args[2]);
 787                 break;
 788
 789         case CMD_EVALUATE:
 790         case CMD_EXECUTE:
 791
 792                 acpi_db_execute(acpi_gbl_db_args[1],
 793                                 &acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
 794                                 EX_NO_SINGLE_STEP);
 795                 break;
 796
 797         case CMD_FIND:
 798
 799                 status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
 800                 break;
 801
 802         case CMD_GO:
 803
 804                 acpi_gbl_cm_single_step = FALSE;
 805                 return (AE_OK);
 806
 807         case CMD_HANDLERS:
 808
 809                 acpi_db_display_handlers();
 810                 break;
 811
 812         case CMD_HELP:
 813         case CMD_HELP2:
 814
 815                 acpi_db_display_help(acpi_gbl_db_args[1]);
 816                 break;
 817
 818         case CMD_HISTORY:
 819
 820                 acpi_db_display_history();
 821                 break;
 822
 823         case CMD_HISTORY_EXE:   /* ! command */
 824
 825                 command_line = acpi_db_get_from_history(acpi_gbl_db_args[1]);
 826                 if (!command_line) {
 827                         return (AE_CTRL_TRUE);
 828                 }
 829
 830                 status = acpi_db_command_dispatch(command_line, walk_state, op);
 831                 return (status);
 832
 833         case CMD_HISTORY_LAST:  /* !! command */
 834
 835                 command_line = acpi_db_get_from_history(NULL);
 836                 if (!command_line) {
 837                         return (AE_CTRL_TRUE);
 838                 }
 839
 840                 status = acpi_db_command_dispatch(command_line, walk_state, op);
 841                 return (status);
 842
 843         case CMD_INFORMATION:
 844
 845                 acpi_db_display_method_info(op);
 846                 break;
 847
 848         case CMD_INTEGRITY:
 849
 850                 acpi_db_check_integrity();
 851                 break;
 852
 853         case CMD_INTO:
 854
 855                 if (op) {
 856                         acpi_gbl_cm_single_step = TRUE;
 857                         return (AE_OK);
 858                 }
 859                 break;
 860
 861         case CMD_LEVEL:
 862
 863                 if (param_count == 0) {
 864                         acpi_os_printf
 865                             ("Current debug level for file output is:    %8.8lX\n",
 866                              acpi_gbl_db_debug_level);
 867                         acpi_os_printf
 868                             ("Current debug level for console output is: %8.8lX\n",
 869                              acpi_gbl_db_console_debug_level);
 870                 } else if (param_count == 2) {
 871                         temp = acpi_gbl_db_console_debug_level;
 872                         acpi_gbl_db_console_debug_level =
 873                             strtoul(acpi_gbl_db_args[1], NULL, 16);
 874                         acpi_os_printf
 875                             ("Debug Level for console output was %8.8lX, now %8.8lX\n",
 876                              temp, acpi_gbl_db_console_debug_level);
 877                 } else {
 878                         temp = acpi_gbl_db_debug_level;
 879                         acpi_gbl_db_debug_level =
 880                             strtoul(acpi_gbl_db_args[1], NULL, 16);
 881                         acpi_os_printf
 882                             ("Debug Level for file output was %8.8lX, now %8.8lX\n",
 883                              temp, acpi_gbl_db_debug_level);
 884                 }
 885                 break;
 886
 887         case CMD_LIST:
 888
 889                 acpi_db_disassemble_aml(acpi_gbl_db_args[1], op);
 890                 break;
 891
 892         case CMD_LOCKS:
 893
 894                 acpi_db_display_locks();
 895                 break;
 896
 897         case CMD_LOCALS:
 898
 899                 acpi_db_display_locals();
 900                 break;
 901
 902         case CMD_METHODS:
 903
 904                 status = acpi_db_display_objects("METHOD", acpi_gbl_db_args[1]);
 905                 break;
 906
 907         case CMD_NAMESPACE:
 908
 909                 acpi_db_dump_namespace(acpi_gbl_db_args[1],
 910                                        acpi_gbl_db_args[2]);
 911                 break;
 912
 913         case CMD_NOTIFY:
 914
 915                 temp = strtoul(acpi_gbl_db_args[2], NULL, 0);
 916                 acpi_db_send_notify(acpi_gbl_db_args[1], temp);
 917                 break;
 918
 919         case CMD_OBJECTS:
 920
 921                 acpi_ut_strupr(acpi_gbl_db_args[1]);
 922                 status =
 923                     acpi_db_display_objects(acpi_gbl_db_args[1],
 924                                             acpi_gbl_db_args[2]);
 925                 break;
 926
 927         case CMD_OSI:
 928
 929                 acpi_db_display_interfaces(acpi_gbl_db_args[1],
 930                                            acpi_gbl_db_args[2]);
 931                 break;
 932
 933         case CMD_OWNER:
 934
 935                 acpi_db_dump_namespace_by_owner(acpi_gbl_db_args[1],
 936                                                 acpi_gbl_db_args[2]);
 937                 break;
 938
 939         case CMD_PATHS:
 940
 941                 acpi_db_dump_namespace_paths();
 942                 break;
 943
 944         case CMD_PREFIX:
 945
 946                 acpi_db_set_scope(acpi_gbl_db_args[1]);
 947                 break;
 948
 949         case CMD_REFERENCES:
 950
 951                 acpi_db_find_references(acpi_gbl_db_args[1]);
 952                 break;
 953
 954         case CMD_RESOURCES:
 955
 956                 acpi_db_display_resources(acpi_gbl_db_args[1]);
 957                 break;
 958
 959         case CMD_RESULTS:
 960
 961                 acpi_db_display_results();
 962                 break;
 963
 964         case CMD_SET:
 965
 966                 acpi_db_set_method_data(acpi_gbl_db_args[1],
 967                                         acpi_gbl_db_args[2],
 968                                         acpi_gbl_db_args[3]);
 969                 break;
 970
 971         case CMD_STATS:
 972
 973                 status = acpi_db_display_statistics(acpi_gbl_db_args[1]);
 974                 break;
 975
 976         case CMD_STOP:
 977
 978                 return (AE_NOT_IMPLEMENTED);
 979
 980         case CMD_TABLES:
 981
 982                 acpi_db_display_table_info(acpi_gbl_db_args[1]);
 983                 break;
 984
 985         case CMD_TEMPLATE:
 986
 987                 acpi_db_display_template(acpi_gbl_db_args[1]);
 988                 break;
 989
 990         case CMD_TRACE:
 991
 992                 acpi_db_trace(acpi_gbl_db_args[1], acpi_gbl_db_args[2],
 993                               acpi_gbl_db_args[3]);
 994                 break;
 995
 996         case CMD_TREE:
 997
 998                 acpi_db_display_calling_tree();
 999                 break;
1000
1001         case CMD_TYPE:
1002
1003                 acpi_db_display_object_type(acpi_gbl_db_args[1]);
1004                 break;
1005
1006 #ifdef ACPI_APPLICATION
1007
1008                 /* Hardware simulation commands. */
1009
1010         case CMD_ENABLEACPI:
1011 #if (!ACPI_REDUCED_HARDWARE)
1012
1013                 status = acpi_enable();
1014                 if (ACPI_FAILURE(status)) {
1015                         acpi_os_printf("AcpiEnable failed (Status=%X)\n",
1016                                        status);
1017                         return (status);
1018                 }
1019 #endif                          /* !ACPI_REDUCED_HARDWARE */
1020                 break;
1021
1022         case CMD_EVENT:
1023
1024                 acpi_os_printf("Event command not implemented\n");
1025                 break;
1026
1027         case CMD_GPE:
1028
1029                 acpi_db_generate_gpe(acpi_gbl_db_args[1], acpi_gbl_db_args[2]);
1030                 break;
1031
1032         case CMD_GPES:
1033
1034                 acpi_db_display_gpes();
1035                 break;
1036
1037         case CMD_SCI:
1038
1039                 acpi_db_generate_sci();
1040                 break;
1041
1042         case CMD_SLEEP:
1043
1044                 status = acpi_db_sleep(acpi_gbl_db_args[1]);
1045                 break;
1046
1047                 /* File I/O commands. */
1048
1049         case CMD_CLOSE:
1050
1051                 acpi_db_close_debug_file();
1052                 break;
1053
1054         case CMD_LOAD:{
1055                         struct acpi_new_table_desc *list_head = NULL;
1056
1057                         status =
1058                             ac_get_all_tables_from_file(acpi_gbl_db_args[1],
1059                                                         ACPI_GET_ALL_TABLES,
1060                                                         &list_head);
1061                         if (ACPI_SUCCESS(status)) {
1062                                 acpi_db_load_tables(list_head);
1063                         }
1064                 }
1065                 break;
1066
1067         case CMD_OPEN:
1068
1069                 acpi_db_open_debug_file(acpi_gbl_db_args[1]);
1070                 break;
1071
1072                 /* User space commands. */
1073
1074         case CMD_TERMINATE:
1075
1076                 acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
1077                 acpi_ut_subsystem_shutdown();
1078
1079                 /*
1080                  * TBD: [Restructure] Need some way to re-initialize without
1081                  * re-creating the semaphores!
1082                  */
1083
1084                 acpi_gbl_db_terminate_loop = TRUE;
1085                 /*  acpi_initialize (NULL); */
1086                 break;
1087
1088         case CMD_THREADS:
1089
1090                 acpi_db_create_execution_threads(acpi_gbl_db_args[1],
1091                                                  acpi_gbl_db_args[2],
1092                                                  acpi_gbl_db_args[3]);
1093                 break;
1094
1095                 /* Debug test commands. */
1096
1097         case CMD_PREDEFINED:
1098
1099                 acpi_db_check_predefined_names();
1100                 break;
1101
1102         case CMD_TEST:
1103
1104                 acpi_db_execute_test(acpi_gbl_db_args[1]);
1105                 break;
1106
1107         case CMD_UNLOAD:
1108
1109                 acpi_db_unload_acpi_table(acpi_gbl_db_args[1]);
1110                 break;
1111 #endif
1112
1113         case CMD_EXIT:
1114         case CMD_QUIT:
1115
1116                 if (op) {
1117                         acpi_os_printf("Method execution terminated\n");
1118                         return (AE_CTRL_TERMINATE);
1119                 }
1120
1121                 if (!acpi_gbl_db_output_to_file) {
1122                         acpi_dbg_level = ACPI_DEBUG_DEFAULT;
1123                 }
1124 #ifdef ACPI_APPLICATION
1125                 acpi_db_close_debug_file();
1126 #endif
1127                 acpi_gbl_db_terminate_loop = TRUE;
1128                 return (AE_CTRL_TERMINATE);
1129
1130         case CMD_NOT_FOUND:
1131         default:
1132
1133                 acpi_os_printf("%s: unknown command\n", acpi_gbl_db_args[0]);
1134                 return (AE_CTRL_TRUE);
1135         }
1136
1137         if (ACPI_SUCCESS(status)) {
1138                 status = AE_CTRL_TRUE;
1139         }
1140
1141         return (status);
1142 }
1143
1144 /*******************************************************************************
1145  *
1146  * FUNCTION:    acpi_db_execute_thread
1147  *
1148  * PARAMETERS:  context         - Not used
1149  *
1150  * RETURN:      None
1151  *
1152  * DESCRIPTION: Debugger execute thread. Waits for a command line, then
1153  *              simply dispatches it.
1154  *
1155  ******************************************************************************/
1156
1157 void ACPI_SYSTEM_XFACE acpi_db_execute_thread(void *context)
1158 {
1159
1160         (void)acpi_db_user_commands();
1161         acpi_gbl_db_threads_terminated = TRUE;
1162 }
1163
1164 /*******************************************************************************
1165  *
1166  * FUNCTION:    acpi_db_user_commands
1167  *
1168  * PARAMETERS:  None
1169  *
1170  * RETURN:      None
1171  *
1172  * DESCRIPTION: Command line execution for the AML debugger. Commands are
1173  *              matched and dispatched here.
1174  *
1175  ******************************************************************************/
1176
1177 acpi_status acpi_db_user_commands(void)
1178 {
1179         acpi_status status = AE_OK;
1180
1181         acpi_os_printf("\n");
1182
1183         /* TBD: [Restructure] Need a separate command line buffer for step mode */
1184
1185         while (!acpi_gbl_db_terminate_loop) {
1186
1187                 /* Wait the readiness of the command */
1188
1189                 status = acpi_os_wait_command_ready();
1190                 if (ACPI_FAILURE(status)) {
1191                         break;
1192                 }
1193
1194                 /* Just call to the command line interpreter */
1195
1196                 acpi_gbl_method_executing = FALSE;
1197                 acpi_gbl_step_to_next_call = FALSE;
1198
1199                 (void)acpi_db_command_dispatch(acpi_gbl_db_line_buf, NULL,
1200                                                NULL);
1201
1202                 /* Notify the completion of the command */
1203
1204                 status = acpi_os_notify_command_complete();
1205                 if (ACPI_FAILURE(status)) {
1206                         break;
1207                 }
1208         }
1209
1210         if (ACPI_FAILURE(status) && status != AE_CTRL_TERMINATE) {
1211                 ACPI_EXCEPTION((AE_INFO, status, "While parsing command line"));
1212         }
1213         return (status);
1214 }