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path: root/drivers/acpi/parser/psargs.c
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Diffstat (limited to 'drivers/acpi/parser/psargs.c')
-rw-r--r--drivers/acpi/parser/psargs.c55
1 files changed, 32 insertions, 23 deletions
diff --git a/drivers/acpi/parser/psargs.c b/drivers/acpi/parser/psargs.c
index b5d98895f6a8..b7ac68cc9e1c 100644
--- a/drivers/acpi/parser/psargs.c
+++ b/drivers/acpi/parser/psargs.c
@@ -50,6 +50,16 @@
50#define _COMPONENT ACPI_PARSER 50#define _COMPONENT ACPI_PARSER
51 ACPI_MODULE_NAME ("psargs") 51 ACPI_MODULE_NAME ("psargs")
52 52
53/* Local prototypes */
54
55static u32
56acpi_ps_get_next_package_length (
57 struct acpi_parse_state *parser_state);
58
59static union acpi_parse_object *
60acpi_ps_get_next_field (
61 struct acpi_parse_state *parser_state);
62
53 63
54/******************************************************************************* 64/*******************************************************************************
55 * 65 *
@@ -64,7 +74,7 @@
64 * 74 *
65 ******************************************************************************/ 75 ******************************************************************************/
66 76
67u32 77static u32
68acpi_ps_get_next_package_length ( 78acpi_ps_get_next_package_length (
69 struct acpi_parse_state *parser_state) 79 struct acpi_parse_state *parser_state)
70{ 80{
@@ -78,7 +88,6 @@ acpi_ps_get_next_package_length (
78 encoded_length = (u32) ACPI_GET8 (parser_state->aml); 88 encoded_length = (u32) ACPI_GET8 (parser_state->aml);
79 parser_state->aml++; 89 parser_state->aml++;
80 90
81
82 switch (encoded_length >> 6) /* bits 6-7 contain encoding scheme */ { 91 switch (encoded_length >> 6) /* bits 6-7 contain encoding scheme */ {
83 case 0: /* 1-byte encoding (bits 0-5) */ 92 case 0: /* 1-byte encoding (bits 0-5) */
84 93
@@ -287,13 +296,14 @@ acpi_ps_get_next_namepath (
287 * parent tree, but don't open a new scope -- we just want to lookup the 296 * parent tree, but don't open a new scope -- we just want to lookup the
288 * object (MUST BE mode EXECUTE to perform upsearch) 297 * object (MUST BE mode EXECUTE to perform upsearch)
289 */ 298 */
290 status = acpi_ns_lookup (&scope_info, path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, 299 status = acpi_ns_lookup (&scope_info, path, ACPI_TYPE_ANY,
291 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &node); 300 ACPI_IMODE_EXECUTE,
301 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
302 NULL, &node);
292 if (ACPI_SUCCESS (status) && method_call) { 303 if (ACPI_SUCCESS (status) && method_call) {
293 if (node->type == ACPI_TYPE_METHOD) { 304 if (node->type == ACPI_TYPE_METHOD) {
294 /* 305 /* This name is actually a control method invocation */
295 * This name is actually a control method invocation 306
296 */
297 method_desc = acpi_ns_get_attached_object (node); 307 method_desc = acpi_ns_get_attached_object (node);
298 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 308 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
299 "Control Method - %p Desc %p Path=%p\n", 309 "Control Method - %p Desc %p Path=%p\n",
@@ -360,7 +370,7 @@ acpi_ps_get_next_namepath (
360 /* 370 /*
361 * We got a NOT_FOUND during table load or we encountered 371 * We got a NOT_FOUND during table load or we encountered
362 * a cond_ref_of(x) where the target does not exist. 372 * a cond_ref_of(x) where the target does not exist.
363 * -- either case is ok 373 * Either case is ok
364 */ 374 */
365 status = AE_OK; 375 status = AE_OK;
366 } 376 }
@@ -486,12 +496,13 @@ acpi_ps_get_next_simple_arg (
486 * 496 *
487 ******************************************************************************/ 497 ******************************************************************************/
488 498
489union acpi_parse_object * 499static union acpi_parse_object *
490acpi_ps_get_next_field ( 500acpi_ps_get_next_field (
491 struct acpi_parse_state *parser_state) 501 struct acpi_parse_state *parser_state)
492{ 502{
493 u32 aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml, 503 u32 aml_offset = (u32)
494 parser_state->aml_start); 504 ACPI_PTR_DIFF (parser_state->aml,
505 parser_state->aml_start);
495 union acpi_parse_object *field; 506 union acpi_parse_object *field;
496 u16 opcode; 507 u16 opcode;
497 u32 name; 508 u32 name;
@@ -500,7 +511,7 @@ acpi_ps_get_next_field (
500 ACPI_FUNCTION_TRACE ("ps_get_next_field"); 511 ACPI_FUNCTION_TRACE ("ps_get_next_field");
501 512
502 513
503 /* determine field type */ 514 /* Determine field type */
504 515
505 switch (ACPI_GET8 (parser_state->aml)) { 516 switch (ACPI_GET8 (parser_state->aml)) {
506 default: 517 default:
@@ -521,7 +532,6 @@ acpi_ps_get_next_field (
521 break; 532 break;
522 } 533 }
523 534
524
525 /* Allocate a new field op */ 535 /* Allocate a new field op */
526 536
527 field = acpi_ps_alloc_op (opcode); 537 field = acpi_ps_alloc_op (opcode);
@@ -582,10 +592,10 @@ acpi_ps_get_next_field (
582 * 592 *
583 * FUNCTION: acpi_ps_get_next_arg 593 * FUNCTION: acpi_ps_get_next_arg
584 * 594 *
585 * PARAMETERS: parser_state - Current parser state object 595 * PARAMETERS: walk_state - Current state
596 * parser_state - Current parser state object
586 * arg_type - The argument type (AML_*_ARG) 597 * arg_type - The argument type (AML_*_ARG)
587 * arg_count - If the argument points to a control method 598 * return_arg - Where the next arg is returned
588 * the method's argument is returned here.
589 * 599 *
590 * RETURN: Status, and an op object containing the next argument. 600 * RETURN: Status, and an op object containing the next argument.
591 * 601 *
@@ -619,7 +629,7 @@ acpi_ps_get_next_arg (
619 case ARGP_NAME: 629 case ARGP_NAME:
620 case ARGP_NAMESTRING: 630 case ARGP_NAMESTRING:
621 631
622 /* constants, strings, and namestrings are all the same size */ 632 /* Constants, strings, and namestrings are all the same size */
623 633
624 arg = acpi_ps_alloc_op (AML_BYTE_OP); 634 arg = acpi_ps_alloc_op (AML_BYTE_OP);
625 if (!arg) { 635 if (!arg) {
@@ -654,7 +664,6 @@ acpi_ps_get_next_arg (
654 else { 664 else {
655 arg = field; 665 arg = field;
656 } 666 }
657
658 prev = field; 667 prev = field;
659 } 668 }
660 669
@@ -677,8 +686,8 @@ acpi_ps_get_next_arg (
677 686
678 /* Fill in bytelist data */ 687 /* Fill in bytelist data */
679 688
680 arg->common.value.size = (u32) ACPI_PTR_DIFF (parser_state->pkg_end, 689 arg->common.value.size = (u32)
681 parser_state->aml); 690 ACPI_PTR_DIFF (parser_state->pkg_end, parser_state->aml);
682 arg->named.data = parser_state->aml; 691 arg->named.data = parser_state->aml;
683 692
684 /* Skip to End of byte data */ 693 /* Skip to End of byte data */
@@ -706,7 +715,7 @@ acpi_ps_get_next_arg (
706 status = acpi_ps_get_next_namepath (walk_state, parser_state, arg, 0); 715 status = acpi_ps_get_next_namepath (walk_state, parser_state, arg, 0);
707 } 716 }
708 else { 717 else {
709 /* single complex argument, nothing returned */ 718 /* Single complex argument, nothing returned */
710 719
711 walk_state->arg_count = 1; 720 walk_state->arg_count = 1;
712 } 721 }
@@ -716,7 +725,7 @@ acpi_ps_get_next_arg (
716 case ARGP_DATAOBJ: 725 case ARGP_DATAOBJ:
717 case ARGP_TERMARG: 726 case ARGP_TERMARG:
718 727
719 /* single complex argument, nothing returned */ 728 /* Single complex argument, nothing returned */
720 729
721 walk_state->arg_count = 1; 730 walk_state->arg_count = 1;
722 break; 731 break;
@@ -727,7 +736,7 @@ acpi_ps_get_next_arg (
727 case ARGP_OBJLIST: 736 case ARGP_OBJLIST:
728 737
729 if (parser_state->aml < parser_state->pkg_end) { 738 if (parser_state->aml < parser_state->pkg_end) {
730 /* non-empty list of variable arguments, nothing returned */ 739 /* Non-empty list of variable arguments, nothing returned */
731 740
732 walk_state->arg_count = ACPI_VAR_ARGS; 741 walk_state->arg_count = ACPI_VAR_ARGS;
733 } 742 }