xref: /linux/drivers/acpi/acpica/dbinput.c (revision a460513ed4b6994bfeb7bd86f72853140bc1ac12)
1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /*******************************************************************************
3  *
4  * Module Name: dbinput - user front-end to the AML debugger
5  *
6  ******************************************************************************/
7 
8 #include <acpi/acpi.h>
9 #include "accommon.h"
10 #include "acdebug.h"
11 
12 #ifdef ACPI_APPLICATION
13 #include "acapps.h"
14 #endif
15 
16 #define _COMPONENT          ACPI_CA_DEBUGGER
17 ACPI_MODULE_NAME("dbinput")
18 
19 /* Local prototypes */
20 static u32 acpi_db_get_line(char *input_buffer);
21 
22 static u32 acpi_db_match_command(char *user_command);
23 
24 static void acpi_db_display_command_info(const char *command, u8 display_all);
25 
26 static void acpi_db_display_help(char *command);
27 
28 static u8
29 acpi_db_match_command_help(const char *command,
30 			   const struct acpi_db_command_help *help);
31 
32 /*
33  * Top-level debugger commands.
34  *
35  * This list of commands must match the string table below it
36  */
37 enum acpi_ex_debugger_commands {
38 	CMD_NOT_FOUND = 0,
39 	CMD_NULL,
40 	CMD_ALL,
41 	CMD_ALLOCATIONS,
42 	CMD_ARGS,
43 	CMD_ARGUMENTS,
44 	CMD_BREAKPOINT,
45 	CMD_BUSINFO,
46 	CMD_CALL,
47 	CMD_DEBUG,
48 	CMD_DISASSEMBLE,
49 	CMD_DISASM,
50 	CMD_DUMP,
51 	CMD_EVALUATE,
52 	CMD_EXECUTE,
53 	CMD_EXIT,
54 	CMD_FIELDS,
55 	CMD_FIND,
56 	CMD_GO,
57 	CMD_HANDLERS,
58 	CMD_HELP,
59 	CMD_HELP2,
60 	CMD_HISTORY,
61 	CMD_HISTORY_EXE,
62 	CMD_HISTORY_LAST,
63 	CMD_INFORMATION,
64 	CMD_INTEGRITY,
65 	CMD_INTO,
66 	CMD_LEVEL,
67 	CMD_LIST,
68 	CMD_LOCALS,
69 	CMD_LOCKS,
70 	CMD_METHODS,
71 	CMD_NAMESPACE,
72 	CMD_NOTIFY,
73 	CMD_OBJECTS,
74 	CMD_OSI,
75 	CMD_OWNER,
76 	CMD_PATHS,
77 	CMD_PREDEFINED,
78 	CMD_PREFIX,
79 	CMD_QUIT,
80 	CMD_REFERENCES,
81 	CMD_RESOURCES,
82 	CMD_RESULTS,
83 	CMD_SET,
84 	CMD_STATS,
85 	CMD_STOP,
86 	CMD_TABLES,
87 	CMD_TEMPLATE,
88 	CMD_TRACE,
89 	CMD_TREE,
90 	CMD_TYPE,
91 #ifdef ACPI_APPLICATION
92 	CMD_ENABLEACPI,
93 	CMD_EVENT,
94 	CMD_GPE,
95 	CMD_GPES,
96 	CMD_SCI,
97 	CMD_SLEEP,
98 
99 	CMD_CLOSE,
100 	CMD_LOAD,
101 	CMD_OPEN,
102 	CMD_UNLOAD,
103 
104 	CMD_TERMINATE,
105 	CMD_BACKGROUND,
106 	CMD_THREADS,
107 
108 	CMD_TEST,
109 #endif
110 };
111 
112 #define CMD_FIRST_VALID     2
113 
114 /* Second parameter is the required argument count */
115 
116 static const struct acpi_db_command_info acpi_gbl_db_commands[] = {
117 	{"<NOT FOUND>", 0},
118 	{"<NULL>", 0},
119 	{"ALL", 1},
120 	{"ALLOCATIONS", 0},
121 	{"ARGS", 0},
122 	{"ARGUMENTS", 0},
123 	{"BREAKPOINT", 1},
124 	{"BUSINFO", 0},
125 	{"CALL", 0},
126 	{"DEBUG", 1},
127 	{"DISASSEMBLE", 1},
128 	{"DISASM", 1},
129 	{"DUMP", 1},
130 	{"EVALUATE", 1},
131 	{"EXECUTE", 1},
132 	{"EXIT", 0},
133 	{"FIELDS", 1},
134 	{"FIND", 1},
135 	{"GO", 0},
136 	{"HANDLERS", 0},
137 	{"HELP", 0},
138 	{"?", 0},
139 	{"HISTORY", 0},
140 	{"!", 1},
141 	{"!!", 0},
142 	{"INFORMATION", 0},
143 	{"INTEGRITY", 0},
144 	{"INTO", 0},
145 	{"LEVEL", 0},
146 	{"LIST", 0},
147 	{"LOCALS", 0},
148 	{"LOCKS", 0},
149 	{"METHODS", 0},
150 	{"NAMESPACE", 0},
151 	{"NOTIFY", 2},
152 	{"OBJECTS", 0},
153 	{"OSI", 0},
154 	{"OWNER", 1},
155 	{"PATHS", 0},
156 	{"PREDEFINED", 0},
157 	{"PREFIX", 0},
158 	{"QUIT", 0},
159 	{"REFERENCES", 1},
160 	{"RESOURCES", 0},
161 	{"RESULTS", 0},
162 	{"SET", 3},
163 	{"STATS", 1},
164 	{"STOP", 0},
165 	{"TABLES", 0},
166 	{"TEMPLATE", 1},
167 	{"TRACE", 1},
168 	{"TREE", 0},
169 	{"TYPE", 1},
170 #ifdef ACPI_APPLICATION
171 	{"ENABLEACPI", 0},
172 	{"EVENT", 1},
173 	{"GPE", 1},
174 	{"GPES", 0},
175 	{"SCI", 0},
176 	{"SLEEP", 0},
177 
178 	{"CLOSE", 0},
179 	{"LOAD", 1},
180 	{"OPEN", 1},
181 	{"UNLOAD", 1},
182 
183 	{"TERMINATE", 0},
184 	{"BACKGROUND", 1},
185 	{"THREADS", 3},
186 
187 	{"TEST", 1},
188 #endif
189 	{NULL, 0}
190 };
191 
192 /*
193  * Help for all debugger commands. First argument is the number of lines
194  * of help to output for the command.
195  *
196  * Note: Some commands are not supported by the kernel-level version of
197  * the debugger.
198  */
199 static const struct acpi_db_command_help acpi_gbl_db_command_help[] = {
200 	{0, "\nNamespace Access:", "\n"},
201 	{1, "  Businfo", "Display system bus info\n"},
202 	{1, "  Disassemble <Method>", "Disassemble a control method\n"},
203 	{1, "  Find <AcpiName> (? is wildcard)",
204 	 "Find ACPI name(s) with wildcards\n"},
205 	{1, "  Integrity", "Validate namespace integrity\n"},
206 	{1, "  Methods", "Display list of loaded control methods\n"},
207 	{1, "  Fields <AddressSpaceId>",
208 	 "Display list of loaded field units by space ID\n"},
209 	{1, "  Namespace [Object] [Depth]",
210 	 "Display loaded namespace tree/subtree\n"},
211 	{1, "  Notify <Object> <Value>", "Send a notification on Object\n"},
212 	{1, "  Objects [ObjectType]",
213 	 "Display summary of all objects or just given type\n"},
214 	{1, "  Owner <OwnerId> [Depth]",
215 	 "Display loaded namespace by object owner\n"},
216 	{1, "  Paths", "Display full pathnames of namespace objects\n"},
217 	{1, "  Predefined", "Check all predefined names\n"},
218 	{1, "  Prefix [<Namepath>]", "Set or Get current execution prefix\n"},
219 	{1, "  References <Addr>", "Find all references to object at addr\n"},
220 	{1, "  Resources [DeviceName]",
221 	 "Display Device resources (no arg = all devices)\n"},
222 	{1, "  Set N <NamedObject> <Value>", "Set value for named integer\n"},
223 	{1, "  Template <Object>", "Format/dump a Buffer/ResourceTemplate\n"},
224 	{1, "  Type <Object>", "Display object type\n"},
225 
226 	{0, "\nControl Method Execution:", "\n"},
227 	{1, "  All <NameSeg>", "Evaluate all objects named NameSeg\n"},
228 	{1, "  Evaluate <Namepath> [Arguments]",
229 	 "Evaluate object or control method\n"},
230 	{1, "  Execute <Namepath> [Arguments]", "Synonym for Evaluate\n"},
231 #ifdef ACPI_APPLICATION
232 	{1, "  Background <Namepath> [Arguments]",
233 	 "Evaluate object/method in a separate thread\n"},
234 	{1, "  Thread <Threads><Loops><NamePath>",
235 	 "Spawn threads to execute method(s)\n"},
236 #endif
237 	{1, "  Debug <Namepath> [Arguments]", "Single-Step a control method\n"},
238 	{7, "  [Arguments] formats:", "Control method argument formats\n"},
239 	{1, "     Hex Integer", "Integer\n"},
240 	{1, "     \"Ascii String\"", "String\n"},
241 	{1, "     (Hex Byte List)", "Buffer\n"},
242 	{1, "         (01 42 7A BF)", "Buffer example (4 bytes)\n"},
243 	{1, "     [Package Element List]", "Package\n"},
244 	{1, "         [0x01 0x1234 \"string\"]",
245 	 "Package example (3 elements)\n"},
246 
247 	{0, "\nMiscellaneous:", "\n"},
248 	{1, "  Allocations", "Display list of current memory allocations\n"},
249 	{2, "  Dump <Address>|<Namepath>", "\n"},
250 	{0, "       [Byte|Word|Dword|Qword]",
251 	 "Display ACPI objects or memory\n"},
252 	{1, "  Handlers", "Info about global handlers\n"},
253 	{1, "  Help [Command]", "This help screen or individual command\n"},
254 	{1, "  History", "Display command history buffer\n"},
255 	{1, "  Level <DebugLevel>] [console]",
256 	 "Get/Set debug level for file or console\n"},
257 	{1, "  Locks", "Current status of internal mutexes\n"},
258 	{1, "  Osi [Install|Remove <name>]",
259 	 "Display or modify global _OSI list\n"},
260 	{1, "  Quit or Exit", "Exit this command\n"},
261 	{8, "  Stats <SubCommand>",
262 	 "Display namespace and memory statistics\n"},
263 	{1, "     Allocations", "Display list of current memory allocations\n"},
264 	{1, "     Memory", "Dump internal memory lists\n"},
265 	{1, "     Misc", "Namespace search and mutex stats\n"},
266 	{1, "     Objects", "Summary of namespace objects\n"},
267 	{1, "     Sizes", "Sizes for each of the internal objects\n"},
268 	{1, "     Stack", "Display CPU stack usage\n"},
269 	{1, "     Tables", "Info about current ACPI table(s)\n"},
270 	{1, "  Tables", "Display info about loaded ACPI tables\n"},
271 #ifdef ACPI_APPLICATION
272 	{1, "  Terminate", "Delete namespace and all internal objects\n"},
273 #endif
274 	{1, "  ! <CommandNumber>", "Execute command from history buffer\n"},
275 	{1, "  !!", "Execute last command again\n"},
276 
277 	{0, "\nMethod and Namespace Debugging:", "\n"},
278 	{5, "  Trace <State> [<Namepath>] [Once]",
279 	 "Trace control method execution\n"},
280 	{1, "     Enable", "Enable all messages\n"},
281 	{1, "     Disable", "Disable tracing\n"},
282 	{1, "     Method", "Enable method execution messages\n"},
283 	{1, "     Opcode", "Enable opcode execution messages\n"},
284 	{3, "  Test <TestName>", "Invoke a debug test\n"},
285 	{1, "     Objects", "Read/write/compare all namespace data objects\n"},
286 	{1, "     Predefined",
287 	 "Validate all ACPI predefined names (_STA, etc.)\n"},
288 	{1, "  Execute predefined",
289 	 "Execute all predefined (public) methods\n"},
290 
291 	{0, "\nControl Method Single-Step Execution:", "\n"},
292 	{1, "  Arguments (or Args)", "Display method arguments\n"},
293 	{1, "  Breakpoint <AmlOffset>", "Set an AML execution breakpoint\n"},
294 	{1, "  Call", "Run to next control method invocation\n"},
295 	{1, "  Go", "Allow method to run to completion\n"},
296 	{1, "  Information", "Display info about the current method\n"},
297 	{1, "  Into", "Step into (not over) a method call\n"},
298 	{1, "  List [# of Aml Opcodes]", "Display method ASL statements\n"},
299 	{1, "  Locals", "Display method local variables\n"},
300 	{1, "  Results", "Display method result stack\n"},
301 	{1, "  Set <A|L> <#> <Value>", "Set method data (Arguments/Locals)\n"},
302 	{1, "  Stop", "Terminate control method\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, "\nFile Operations:", "\n"},
308 	{1, "  Close", "Close debug output file\n"},
309 	{1, "  Load <Input Filename>", "Load ACPI table from a file\n"},
310 	{1, "  Open <Output Filename>", "Open a file for debug output\n"},
311 	{1, "  Unload <Namepath>",
312 	 "Unload an ACPI table via namespace object\n"},
313 
314 	{0, "\nHardware Simulation:", "\n"},
315 	{1, "  EnableAcpi", "Enable ACPI (hardware) mode\n"},
316 	{1, "  Event <F|G> <Value>", "Generate AcpiEvent (Fixed/GPE)\n"},
317 	{1, "  Gpe <GpeNum> [GpeBlockDevice]", "Simulate a GPE\n"},
318 	{1, "  Gpes", "Display info on all GPE devices\n"},
319 	{1, "  Sci", "Generate an SCI\n"},
320 	{1, "  Sleep [SleepState]", "Simulate sleep/wake sequence(s) (0-5)\n"},
321 #endif
322 	{0, NULL, NULL}
323 };
324 
325 /*******************************************************************************
326  *
327  * FUNCTION:    acpi_db_match_command_help
328  *
329  * PARAMETERS:  command             - Command string to match
330  *              help                - Help table entry to attempt match
331  *
332  * RETURN:      TRUE if command matched, FALSE otherwise
333  *
334  * DESCRIPTION: Attempt to match a command in the help table in order to
335  *              print help information for a single command.
336  *
337  ******************************************************************************/
338 
339 static u8
340 acpi_db_match_command_help(const char *command,
341 			   const struct acpi_db_command_help *help)
342 {
343 	char *invocation = help->invocation;
344 	u32 line_count;
345 
346 	/* Valid commands in the help table begin with a couple of spaces */
347 
348 	if (*invocation != ' ') {
349 		return (FALSE);
350 	}
351 
352 	while (*invocation == ' ') {
353 		invocation++;
354 	}
355 
356 	/* Match command name (full command or substring) */
357 
358 	while ((*command) && (*invocation) && (*invocation != ' ')) {
359 		if (tolower((int)*command) != tolower((int)*invocation)) {
360 			return (FALSE);
361 		}
362 
363 		invocation++;
364 		command++;
365 	}
366 
367 	/* Print the appropriate number of help lines */
368 
369 	line_count = help->line_count;
370 	while (line_count) {
371 		acpi_os_printf("%-38s : %s", help->invocation,
372 			       help->description);
373 		help++;
374 		line_count--;
375 	}
376 
377 	return (TRUE);
378 }
379 
380 /*******************************************************************************
381  *
382  * FUNCTION:    acpi_db_display_command_info
383  *
384  * PARAMETERS:  command             - Command string to match
385  *              display_all         - Display all matching commands, or just
386  *                                    the first one (substring match)
387  *
388  * RETURN:      None
389  *
390  * DESCRIPTION: Display help information for a Debugger command.
391  *
392  ******************************************************************************/
393 
394 static void acpi_db_display_command_info(const char *command, u8 display_all)
395 {
396 	const struct acpi_db_command_help *next;
397 	u8 matched;
398 
399 	next = acpi_gbl_db_command_help;
400 	while (next->invocation) {
401 		matched = acpi_db_match_command_help(command, next);
402 		if (!display_all && matched) {
403 			return;
404 		}
405 
406 		next++;
407 	}
408 }
409 
410 /*******************************************************************************
411  *
412  * FUNCTION:    acpi_db_display_help
413  *
414  * PARAMETERS:  command             - Optional command string to display help.
415  *                                    if not specified, all debugger command
416  *                                    help strings are displayed
417  *
418  * RETURN:      None
419  *
420  * DESCRIPTION: Display help for a single debugger command, or all of them.
421  *
422  ******************************************************************************/
423 
424 static void acpi_db_display_help(char *command)
425 {
426 	const struct acpi_db_command_help *next = acpi_gbl_db_command_help;
427 
428 	if (!command) {
429 
430 		/* No argument to help, display help for all commands */
431 
432 		acpi_os_printf("\nSummary of AML Debugger Commands\n\n");
433 
434 		while (next->invocation) {
435 			acpi_os_printf("%-38s%s", next->invocation,
436 				       next->description);
437 			next++;
438 		}
439 		acpi_os_printf("\n");
440 
441 	} else {
442 		/* Display help for all commands that match the substring */
443 
444 		acpi_db_display_command_info(command, TRUE);
445 	}
446 }
447 
448 /*******************************************************************************
449  *
450  * FUNCTION:    acpi_db_get_next_token
451  *
452  * PARAMETERS:  string          - Command buffer
453  *              next            - Return value, end of next token
454  *
455  * RETURN:      Pointer to the start of the next token.
456  *
457  * DESCRIPTION: Command line parsing. Get the next token on the command line
458  *
459  ******************************************************************************/
460 
461 char *acpi_db_get_next_token(char *string,
462 			     char **next, acpi_object_type *return_type)
463 {
464 	char *start;
465 	u32 depth;
466 	acpi_object_type type = ACPI_TYPE_INTEGER;
467 
468 	/* At end of buffer? */
469 
470 	if (!string || !(*string)) {
471 		return (NULL);
472 	}
473 
474 	/* Remove any spaces at the beginning, ignore blank lines */
475 
476 	while (*string && isspace((int)*string)) {
477 		string++;
478 	}
479 
480 	if (!(*string)) {
481 		return (NULL);
482 	}
483 
484 	switch (*string) {
485 	case '"':
486 
487 		/* This is a quoted string, scan until closing quote */
488 
489 		string++;
490 		start = string;
491 		type = ACPI_TYPE_STRING;
492 
493 		/* Find end of string */
494 
495 		while (*string && (*string != '"')) {
496 			string++;
497 		}
498 		break;
499 
500 	case '(':
501 
502 		/* This is the start of a buffer, scan until closing paren */
503 
504 		string++;
505 		start = string;
506 		type = ACPI_TYPE_BUFFER;
507 
508 		/* Find end of buffer */
509 
510 		while (*string && (*string != ')')) {
511 			string++;
512 		}
513 		break;
514 
515 	case '{':
516 
517 		/* This is the start of a field unit, scan until closing brace */
518 
519 		string++;
520 		start = string;
521 		type = ACPI_TYPE_FIELD_UNIT;
522 
523 		/* Find end of buffer */
524 
525 		while (*string && (*string != '}')) {
526 			string++;
527 		}
528 		break;
529 
530 	case '[':
531 
532 		/* This is the start of a package, scan until closing bracket */
533 
534 		string++;
535 		depth = 1;
536 		start = string;
537 		type = ACPI_TYPE_PACKAGE;
538 
539 		/* Find end of package (closing bracket) */
540 
541 		while (*string) {
542 
543 			/* Handle String package elements */
544 
545 			if (*string == '"') {
546 				/* Find end of string */
547 
548 				string++;
549 				while (*string && (*string != '"')) {
550 					string++;
551 				}
552 				if (!(*string)) {
553 					break;
554 				}
555 			} else if (*string == '[') {
556 				depth++;	/* A nested package declaration */
557 			} else if (*string == ']') {
558 				depth--;
559 				if (depth == 0) {	/* Found final package closing bracket */
560 					break;
561 				}
562 			}
563 
564 			string++;
565 		}
566 		break;
567 
568 	default:
569 
570 		start = string;
571 
572 		/* Find end of token */
573 
574 		while (*string && !isspace((int)*string)) {
575 			string++;
576 		}
577 		break;
578 	}
579 
580 	if (!(*string)) {
581 		*next = NULL;
582 	} else {
583 		*string = 0;
584 		*next = string + 1;
585 	}
586 
587 	*return_type = type;
588 	return (start);
589 }
590 
591 /*******************************************************************************
592  *
593  * FUNCTION:    acpi_db_get_line
594  *
595  * PARAMETERS:  input_buffer        - Command line buffer
596  *
597  * RETURN:      Count of arguments to the command
598  *
599  * DESCRIPTION: Get the next command line from the user. Gets entire line
600  *              up to the next newline
601  *
602  ******************************************************************************/
603 
604 static u32 acpi_db_get_line(char *input_buffer)
605 {
606 	u32 i;
607 	u32 count;
608 	char *next;
609 	char *this;
610 
611 	if (acpi_ut_safe_strcpy
612 	    (acpi_gbl_db_parsed_buf, sizeof(acpi_gbl_db_parsed_buf),
613 	     input_buffer)) {
614 		acpi_os_printf
615 		    ("Buffer overflow while parsing input line (max %u characters)\n",
616 		     (u32)sizeof(acpi_gbl_db_parsed_buf));
617 		return (0);
618 	}
619 
620 	this = acpi_gbl_db_parsed_buf;
621 	for (i = 0; i < ACPI_DEBUGGER_MAX_ARGS; i++) {
622 		acpi_gbl_db_args[i] = acpi_db_get_next_token(this, &next,
623 							     &acpi_gbl_db_arg_types
624 							     [i]);
625 		if (!acpi_gbl_db_args[i]) {
626 			break;
627 		}
628 
629 		this = next;
630 	}
631 
632 	/* Uppercase the actual command */
633 
634 	acpi_ut_strupr(acpi_gbl_db_args[0]);
635 
636 	count = i;
637 	if (count) {
638 		count--;	/* Number of args only */
639 	}
640 
641 	return (count);
642 }
643 
644 /*******************************************************************************
645  *
646  * FUNCTION:    acpi_db_match_command
647  *
648  * PARAMETERS:  user_command            - User command line
649  *
650  * RETURN:      Index into command array, -1 if not found
651  *
652  * DESCRIPTION: Search command array for a command match
653  *
654  ******************************************************************************/
655 
656 static u32 acpi_db_match_command(char *user_command)
657 {
658 	u32 i;
659 
660 	if (!user_command || user_command[0] == 0) {
661 		return (CMD_NULL);
662 	}
663 
664 	for (i = CMD_FIRST_VALID; acpi_gbl_db_commands[i].name; i++) {
665 		if (strstr
666 		    (ACPI_CAST_PTR(char, acpi_gbl_db_commands[i].name),
667 		     user_command) == acpi_gbl_db_commands[i].name) {
668 			return (i);
669 		}
670 	}
671 
672 	/* Command not recognized */
673 
674 	return (CMD_NOT_FOUND);
675 }
676 
677 /*******************************************************************************
678  *
679  * FUNCTION:    acpi_db_command_dispatch
680  *
681  * PARAMETERS:  input_buffer        - Command line buffer
682  *              walk_state          - Current walk
683  *              op                  - Current (executing) parse op
684  *
685  * RETURN:      Status
686  *
687  * DESCRIPTION: Command dispatcher.
688  *
689  ******************************************************************************/
690 
691 acpi_status
692 acpi_db_command_dispatch(char *input_buffer,
693 			 struct acpi_walk_state *walk_state,
694 			 union acpi_parse_object *op)
695 {
696 	u32 temp;
697 	u64 temp64;
698 	u32 command_index;
699 	u32 param_count;
700 	char *command_line;
701 	acpi_status status = AE_CTRL_TRUE;
702 
703 	/* If acpi_terminate has been called, terminate this thread */
704 
705 	if (acpi_gbl_db_terminate_loop) {
706 		return (AE_CTRL_TERMINATE);
707 	}
708 
709 	/* Find command and add to the history buffer */
710 
711 	param_count = acpi_db_get_line(input_buffer);
712 	command_index = acpi_db_match_command(acpi_gbl_db_args[0]);
713 
714 	/*
715 	 * We don't want to add the !! command to the history buffer. It
716 	 * would cause an infinite loop because it would always be the
717 	 * previous command.
718 	 */
719 	if (command_index != CMD_HISTORY_LAST) {
720 		acpi_db_add_to_history(input_buffer);
721 	}
722 
723 	/* Verify that we have the minimum number of params */
724 
725 	if (param_count < acpi_gbl_db_commands[command_index].min_args) {
726 		acpi_os_printf
727 		    ("%u parameters entered, [%s] requires %u parameters\n",
728 		     param_count, acpi_gbl_db_commands[command_index].name,
729 		     acpi_gbl_db_commands[command_index].min_args);
730 
731 		acpi_db_display_command_info(acpi_gbl_db_commands
732 					     [command_index].name, FALSE);
733 		return (AE_CTRL_TRUE);
734 	}
735 
736 	/* Decode and dispatch the command */
737 
738 	switch (command_index) {
739 	case CMD_NULL:
740 
741 		if (op) {
742 			return (AE_OK);
743 		}
744 		break;
745 
746 	case CMD_ALL:
747 
748 		acpi_os_printf("Executing all objects with NameSeg: %s\n",
749 			       acpi_gbl_db_args[1]);
750 		acpi_db_execute(acpi_gbl_db_args[1], &acpi_gbl_db_args[2],
751 				&acpi_gbl_db_arg_types[2],
752 				EX_NO_SINGLE_STEP | EX_ALL);
753 		break;
754 
755 	case CMD_ALLOCATIONS:
756 
757 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
758 		acpi_ut_dump_allocations((u32)-1, NULL);
759 #endif
760 		break;
761 
762 	case CMD_ARGS:
763 	case CMD_ARGUMENTS:
764 
765 		acpi_db_display_arguments();
766 		break;
767 
768 	case CMD_BREAKPOINT:
769 
770 		acpi_db_set_method_breakpoint(acpi_gbl_db_args[1], walk_state,
771 					      op);
772 		break;
773 
774 	case CMD_BUSINFO:
775 
776 		acpi_db_get_bus_info();
777 		break;
778 
779 	case CMD_CALL:
780 
781 		acpi_db_set_method_call_breakpoint(op);
782 		status = AE_OK;
783 		break;
784 
785 	case CMD_DEBUG:
786 
787 		acpi_db_execute(acpi_gbl_db_args[1],
788 				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
789 				EX_SINGLE_STEP);
790 		break;
791 
792 	case CMD_DISASSEMBLE:
793 	case CMD_DISASM:
794 
795 #ifdef ACPI_DISASSEMBLER
796 		(void)acpi_db_disassemble_method(acpi_gbl_db_args[1]);
797 #else
798 		acpi_os_printf
799 		    ("The AML Disassembler is not configured/present\n");
800 #endif
801 		break;
802 
803 	case CMD_DUMP:
804 
805 		acpi_db_decode_and_display_object(acpi_gbl_db_args[1],
806 						  acpi_gbl_db_args[2]);
807 		break;
808 
809 	case CMD_EVALUATE:
810 	case CMD_EXECUTE:
811 
812 		acpi_db_execute(acpi_gbl_db_args[1],
813 				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
814 				EX_NO_SINGLE_STEP);
815 		break;
816 
817 	case CMD_FIND:
818 
819 		status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
820 		break;
821 
822 	case CMD_FIELDS:
823 
824 		status = acpi_ut_strtoul64(acpi_gbl_db_args[1], &temp64);
825 
826 		if (ACPI_FAILURE(status)
827 		    || temp64 >= ACPI_NUM_PREDEFINED_REGIONS) {
828 			acpi_os_printf
829 			    ("Invalid address space ID: must be between 0 and %u inclusive\n",
830 			     ACPI_NUM_PREDEFINED_REGIONS - 1);
831 			return (AE_OK);
832 		}
833 
834 		status = acpi_db_display_fields((u32)temp64);
835 		break;
836 
837 	case CMD_GO:
838 
839 		acpi_gbl_cm_single_step = FALSE;
840 		return (AE_OK);
841 
842 	case CMD_HANDLERS:
843 
844 		acpi_db_display_handlers();
845 		break;
846 
847 	case CMD_HELP:
848 	case CMD_HELP2:
849 
850 		acpi_db_display_help(acpi_gbl_db_args[1]);
851 		break;
852 
853 	case CMD_HISTORY:
854 
855 		acpi_db_display_history();
856 		break;
857 
858 	case CMD_HISTORY_EXE:	/* ! command */
859 
860 		command_line = acpi_db_get_from_history(acpi_gbl_db_args[1]);
861 		if (!command_line) {
862 			return (AE_CTRL_TRUE);
863 		}
864 
865 		status = acpi_db_command_dispatch(command_line, walk_state, op);
866 		return (status);
867 
868 	case CMD_HISTORY_LAST:	/* !! command */
869 
870 		command_line = acpi_db_get_from_history(NULL);
871 		if (!command_line) {
872 			return (AE_CTRL_TRUE);
873 		}
874 
875 		status = acpi_db_command_dispatch(command_line, walk_state, op);
876 		return (status);
877 
878 	case CMD_INFORMATION:
879 
880 		acpi_db_display_method_info(op);
881 		break;
882 
883 	case CMD_INTEGRITY:
884 
885 		acpi_db_check_integrity();
886 		break;
887 
888 	case CMD_INTO:
889 
890 		if (op) {
891 			acpi_gbl_cm_single_step = TRUE;
892 			return (AE_OK);
893 		}
894 		break;
895 
896 	case CMD_LEVEL:
897 
898 		if (param_count == 0) {
899 			acpi_os_printf
900 			    ("Current debug level for file output is:    %8.8X\n",
901 			     acpi_gbl_db_debug_level);
902 			acpi_os_printf
903 			    ("Current debug level for console output is: %8.8X\n",
904 			     acpi_gbl_db_console_debug_level);
905 		} else if (param_count == 2) {
906 			temp = acpi_gbl_db_console_debug_level;
907 			acpi_gbl_db_console_debug_level =
908 			    strtoul(acpi_gbl_db_args[1], NULL, 16);
909 			acpi_os_printf
910 			    ("Debug Level for console output was %8.8X, now %8.8X\n",
911 			     temp, acpi_gbl_db_console_debug_level);
912 		} else {
913 			temp = acpi_gbl_db_debug_level;
914 			acpi_gbl_db_debug_level =
915 			    strtoul(acpi_gbl_db_args[1], NULL, 16);
916 			acpi_os_printf
917 			    ("Debug Level for file output was %8.8X, now %8.8X\n",
918 			     temp, acpi_gbl_db_debug_level);
919 		}
920 		break;
921 
922 	case CMD_LIST:
923 
924 #ifdef ACPI_DISASSEMBLER
925 		acpi_db_disassemble_aml(acpi_gbl_db_args[1], op);
926 #else
927 		acpi_os_printf
928 		    ("The AML Disassembler is not configured/present\n");
929 #endif
930 		break;
931 
932 	case CMD_LOCKS:
933 
934 		acpi_db_display_locks();
935 		break;
936 
937 	case CMD_LOCALS:
938 
939 		acpi_db_display_locals();
940 		break;
941 
942 	case CMD_METHODS:
943 
944 		status = acpi_db_display_objects("METHOD", acpi_gbl_db_args[1]);
945 		break;
946 
947 	case CMD_NAMESPACE:
948 
949 		acpi_db_dump_namespace(acpi_gbl_db_args[1],
950 				       acpi_gbl_db_args[2]);
951 		break;
952 
953 	case CMD_NOTIFY:
954 
955 		temp = strtoul(acpi_gbl_db_args[2], NULL, 0);
956 		acpi_db_send_notify(acpi_gbl_db_args[1], temp);
957 		break;
958 
959 	case CMD_OBJECTS:
960 
961 		acpi_ut_strupr(acpi_gbl_db_args[1]);
962 		status =
963 		    acpi_db_display_objects(acpi_gbl_db_args[1],
964 					    acpi_gbl_db_args[2]);
965 		break;
966 
967 	case CMD_OSI:
968 
969 		acpi_db_display_interfaces(acpi_gbl_db_args[1],
970 					   acpi_gbl_db_args[2]);
971 		break;
972 
973 	case CMD_OWNER:
974 
975 		acpi_db_dump_namespace_by_owner(acpi_gbl_db_args[1],
976 						acpi_gbl_db_args[2]);
977 		break;
978 
979 	case CMD_PATHS:
980 
981 		acpi_db_dump_namespace_paths();
982 		break;
983 
984 	case CMD_PREFIX:
985 
986 		acpi_db_set_scope(acpi_gbl_db_args[1]);
987 		break;
988 
989 	case CMD_REFERENCES:
990 
991 		acpi_db_find_references(acpi_gbl_db_args[1]);
992 		break;
993 
994 	case CMD_RESOURCES:
995 
996 		acpi_db_display_resources(acpi_gbl_db_args[1]);
997 		break;
998 
999 	case CMD_RESULTS:
1000 
1001 		acpi_db_display_results();
1002 		break;
1003 
1004 	case CMD_SET:
1005 
1006 		acpi_db_set_method_data(acpi_gbl_db_args[1],
1007 					acpi_gbl_db_args[2],
1008 					acpi_gbl_db_args[3]);
1009 		break;
1010 
1011 	case CMD_STATS:
1012 
1013 		status = acpi_db_display_statistics(acpi_gbl_db_args[1]);
1014 		break;
1015 
1016 	case CMD_STOP:
1017 
1018 		return (AE_NOT_IMPLEMENTED);
1019 
1020 	case CMD_TABLES:
1021 
1022 		acpi_db_display_table_info(acpi_gbl_db_args[1]);
1023 		break;
1024 
1025 	case CMD_TEMPLATE:
1026 
1027 		acpi_db_display_template(acpi_gbl_db_args[1]);
1028 		break;
1029 
1030 	case CMD_TRACE:
1031 
1032 		acpi_db_trace(acpi_gbl_db_args[1], acpi_gbl_db_args[2],
1033 			      acpi_gbl_db_args[3]);
1034 		break;
1035 
1036 	case CMD_TREE:
1037 
1038 		acpi_db_display_calling_tree();
1039 		break;
1040 
1041 	case CMD_TYPE:
1042 
1043 		acpi_db_display_object_type(acpi_gbl_db_args[1]);
1044 		break;
1045 
1046 #ifdef ACPI_APPLICATION
1047 
1048 		/* Hardware simulation commands. */
1049 
1050 	case CMD_ENABLEACPI:
1051 #if (!ACPI_REDUCED_HARDWARE)
1052 
1053 		status = acpi_enable();
1054 		if (ACPI_FAILURE(status)) {
1055 			acpi_os_printf("AcpiEnable failed (Status=%X)\n",
1056 				       status);
1057 			return (status);
1058 		}
1059 #endif				/* !ACPI_REDUCED_HARDWARE */
1060 		break;
1061 
1062 	case CMD_EVENT:
1063 
1064 		acpi_os_printf("Event command not implemented\n");
1065 		break;
1066 
1067 	case CMD_GPE:
1068 
1069 		acpi_db_generate_gpe(acpi_gbl_db_args[1], acpi_gbl_db_args[2]);
1070 		break;
1071 
1072 	case CMD_GPES:
1073 
1074 		acpi_db_display_gpes();
1075 		break;
1076 
1077 	case CMD_SCI:
1078 
1079 		acpi_db_generate_sci();
1080 		break;
1081 
1082 	case CMD_SLEEP:
1083 
1084 		status = acpi_db_sleep(acpi_gbl_db_args[1]);
1085 		break;
1086 
1087 		/* File I/O commands. */
1088 
1089 	case CMD_CLOSE:
1090 
1091 		acpi_db_close_debug_file();
1092 		break;
1093 
1094 	case CMD_LOAD:{
1095 			struct acpi_new_table_desc *list_head = NULL;
1096 
1097 			status =
1098 			    ac_get_all_tables_from_file(acpi_gbl_db_args[1],
1099 							ACPI_GET_ALL_TABLES,
1100 							&list_head);
1101 			if (ACPI_SUCCESS(status)) {
1102 				acpi_db_load_tables(list_head);
1103 			}
1104 		}
1105 		break;
1106 
1107 	case CMD_OPEN:
1108 
1109 		acpi_db_open_debug_file(acpi_gbl_db_args[1]);
1110 		break;
1111 
1112 		/* User space commands. */
1113 
1114 	case CMD_TERMINATE:
1115 
1116 		acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
1117 		acpi_ut_subsystem_shutdown();
1118 
1119 		/*
1120 		 * TBD: [Restructure] Need some way to re-initialize without
1121 		 * re-creating the semaphores!
1122 		 */
1123 
1124 		acpi_gbl_db_terminate_loop = TRUE;
1125 		/*  acpi_initialize (NULL); */
1126 		break;
1127 
1128 	case CMD_BACKGROUND:
1129 
1130 		acpi_db_create_execution_thread(acpi_gbl_db_args[1],
1131 						&acpi_gbl_db_args[2],
1132 						&acpi_gbl_db_arg_types[2]);
1133 		break;
1134 
1135 	case CMD_THREADS:
1136 
1137 		acpi_db_create_execution_threads(acpi_gbl_db_args[1],
1138 						 acpi_gbl_db_args[2],
1139 						 acpi_gbl_db_args[3]);
1140 		break;
1141 
1142 		/* Debug test commands. */
1143 
1144 	case CMD_PREDEFINED:
1145 
1146 		acpi_db_check_predefined_names();
1147 		break;
1148 
1149 	case CMD_TEST:
1150 
1151 		acpi_db_execute_test(acpi_gbl_db_args[1]);
1152 		break;
1153 
1154 	case CMD_UNLOAD:
1155 
1156 		acpi_db_unload_acpi_table(acpi_gbl_db_args[1]);
1157 		break;
1158 #endif
1159 
1160 	case CMD_EXIT:
1161 	case CMD_QUIT:
1162 
1163 		if (op) {
1164 			acpi_os_printf("Method execution terminated\n");
1165 			return (AE_CTRL_TERMINATE);
1166 		}
1167 
1168 		if (!acpi_gbl_db_output_to_file) {
1169 			acpi_dbg_level = ACPI_DEBUG_DEFAULT;
1170 		}
1171 #ifdef ACPI_APPLICATION
1172 		acpi_db_close_debug_file();
1173 #endif
1174 		acpi_gbl_db_terminate_loop = TRUE;
1175 		return (AE_CTRL_TERMINATE);
1176 
1177 	case CMD_NOT_FOUND:
1178 	default:
1179 
1180 		acpi_os_printf("%s: unknown command\n", acpi_gbl_db_args[0]);
1181 		return (AE_CTRL_TRUE);
1182 	}
1183 
1184 	if (ACPI_SUCCESS(status)) {
1185 		status = AE_CTRL_TRUE;
1186 	}
1187 
1188 	return (status);
1189 }
1190 
1191 /*******************************************************************************
1192  *
1193  * FUNCTION:    acpi_db_execute_thread
1194  *
1195  * PARAMETERS:  context         - Not used
1196  *
1197  * RETURN:      None
1198  *
1199  * DESCRIPTION: Debugger execute thread. Waits for a command line, then
1200  *              simply dispatches it.
1201  *
1202  ******************************************************************************/
1203 
1204 void ACPI_SYSTEM_XFACE acpi_db_execute_thread(void *context)
1205 {
1206 
1207 	(void)acpi_db_user_commands();
1208 	acpi_gbl_db_threads_terminated = TRUE;
1209 }
1210 
1211 /*******************************************************************************
1212  *
1213  * FUNCTION:    acpi_db_user_commands
1214  *
1215  * PARAMETERS:  None
1216  *
1217  * RETURN:      None
1218  *
1219  * DESCRIPTION: Command line execution for the AML debugger. Commands are
1220  *              matched and dispatched here.
1221  *
1222  ******************************************************************************/
1223 
1224 acpi_status acpi_db_user_commands(void)
1225 {
1226 	acpi_status status = AE_OK;
1227 
1228 	acpi_os_printf("\n");
1229 
1230 	/* TBD: [Restructure] Need a separate command line buffer for step mode */
1231 
1232 	while (!acpi_gbl_db_terminate_loop) {
1233 
1234 		/* Wait the readiness of the command */
1235 
1236 		status = acpi_os_wait_command_ready();
1237 		if (ACPI_FAILURE(status)) {
1238 			break;
1239 		}
1240 
1241 		/* Just call to the command line interpreter */
1242 
1243 		acpi_gbl_method_executing = FALSE;
1244 		acpi_gbl_step_to_next_call = FALSE;
1245 
1246 		(void)acpi_db_command_dispatch(acpi_gbl_db_line_buf, NULL,
1247 					       NULL);
1248 
1249 		/* Notify the completion of the command */
1250 
1251 		status = acpi_os_notify_command_complete();
1252 		if (ACPI_FAILURE(status)) {
1253 			break;
1254 		}
1255 	}
1256 
1257 	if (ACPI_FAILURE(status) && status != AE_CTRL_TERMINATE) {
1258 		ACPI_EXCEPTION((AE_INFO, status, "While parsing command line"));
1259 	}
1260 	return (status);
1261 }
1262