diff options
Diffstat (limited to 'drivers/acpi/parser')
| -rw-r--r-- | drivers/acpi/parser/Makefile | 2 | ||||
| -rw-r--r-- | drivers/acpi/parser/psloop.c | 781 | ||||
| -rw-r--r-- | drivers/acpi/parser/psopcode.c | 30 | ||||
| -rw-r--r-- | drivers/acpi/parser/psparse.c | 723 | ||||
| -rw-r--r-- | drivers/acpi/parser/psutils.c | 37 | ||||
| -rw-r--r-- | drivers/acpi/parser/psxface.c | 241 |
6 files changed, 966 insertions, 848 deletions
diff --git a/drivers/acpi/parser/Makefile b/drivers/acpi/parser/Makefile index bbdd286c660..db24ee09cf1 100644 --- a/drivers/acpi/parser/Makefile +++ b/drivers/acpi/parser/Makefile @@ -2,7 +2,7 @@ # Makefile for all Linux ACPI interpreter subdirectories # -obj-y := psargs.o psparse.o pstree.o pswalk.o \ +obj-y := psargs.o psparse.o psloop.o pstree.o pswalk.o \ psopcode.o psscope.o psutils.o psxface.o EXTRA_CFLAGS += $(ACPI_CFLAGS) diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c new file mode 100644 index 00000000000..551d54bdbec --- /dev/null +++ b/drivers/acpi/parser/psloop.c @@ -0,0 +1,781 @@ +/****************************************************************************** + * + * Module Name: psloop - Main AML parse loop + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2005, R. Byron Moore + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + + +/* + * Parse the AML and build an operation tree as most interpreters, + * like Perl, do. Parsing is done by hand rather than with a YACC + * generated parser to tightly constrain stack and dynamic memory + * usage. At the same time, parsing is kept flexible and the code + * fairly compact by parsing based on a list of AML opcode + * templates in aml_op_info[] + */ + +#include <acpi/acpi.h> +#include <acpi/acparser.h> +#include <acpi/acdispat.h> +#include <acpi/amlcode.h> + +#define _COMPONENT ACPI_PARSER + ACPI_MODULE_NAME ("psloop") + +static u32 acpi_gbl_depth = 0; + + +/******************************************************************************* + * + * FUNCTION: acpi_ps_parse_loop + * + * PARAMETERS: walk_state - Current state + * + * RETURN: Status + * + * DESCRIPTION: Parse AML (pointed to by the current parser state) and return + * a tree of ops. + * + ******************************************************************************/ + +acpi_status +acpi_ps_parse_loop ( + struct acpi_walk_state *walk_state) +{ + acpi_status status = AE_OK; + acpi_status status2; + union acpi_parse_object *op = NULL; /* current op */ + union acpi_parse_object *arg = NULL; + union acpi_parse_object *pre_op = NULL; + struct acpi_parse_state *parser_state; + u8 *aml_op_start = NULL; + + + ACPI_FUNCTION_TRACE_PTR ("ps_parse_loop", walk_state); + + if (walk_state->descending_callback == NULL) { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + parser_state = &walk_state->parser_state; + walk_state->arg_types = 0; + +#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) + + if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { + /* We are restarting a preempted control method */ + + if (acpi_ps_has_completed_scope (parser_state)) { + /* + * We must check if a predicate to an IF or WHILE statement + * was just completed + */ + if ((parser_state->scope->parse_scope.op) && + ((parser_state->scope->parse_scope.op->common.aml_opcode == AML_IF_OP) || + (parser_state->scope->parse_scope.op->common.aml_opcode == AML_WHILE_OP)) && + (walk_state->control_state) && + (walk_state->control_state->common.state == + ACPI_CONTROL_PREDICATE_EXECUTING)) { + /* + * A predicate was just completed, get the value of the + * predicate and branch based on that value + */ + walk_state->op = NULL; + status = acpi_ds_get_predicate_value (walk_state, ACPI_TO_POINTER (TRUE)); + if (ACPI_FAILURE (status) && + ((status & AE_CODE_MASK) != AE_CODE_CONTROL)) { + if (status == AE_AML_NO_RETURN_VALUE) { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Invoked method did not return a value, %s\n", + acpi_format_exception (status))); + + } + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "get_predicate Failed, %s\n", + acpi_format_exception (status))); + return_ACPI_STATUS (status); + } + + status = acpi_ps_next_parse_state (walk_state, op, status); + } + + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op)); + } + else if (walk_state->prev_op) { + /* We were in the middle of an op */ + + op = walk_state->prev_op; + walk_state->arg_types = walk_state->prev_arg_types; + } + } +#endif + + /* Iterative parsing loop, while there is more AML to process: */ + + while ((parser_state->aml < parser_state->aml_end) || (op)) { + aml_op_start = parser_state->aml; + if (!op) { + /* Get the next opcode from the AML stream */ + + walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml, + parser_state->aml_start); + walk_state->opcode = acpi_ps_peek_opcode (parser_state); + + /* + * First cut to determine what we have found: + * 1) A valid AML opcode + * 2) A name string + * 3) An unknown/invalid opcode + */ + walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode); + switch (walk_state->op_info->class) { + case AML_CLASS_ASCII: + case AML_CLASS_PREFIX: + /* + * Starts with a valid prefix or ASCII char, this is a name + * string. Convert the bare name string to a namepath. + */ + walk_state->opcode = AML_INT_NAMEPATH_OP; + walk_state->arg_types = ARGP_NAMESTRING; + break; + + case AML_CLASS_UNKNOWN: + + /* The opcode is unrecognized. Just skip unknown opcodes */ + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Found unknown opcode %X at AML address %p offset %X, ignoring\n", + walk_state->opcode, parser_state->aml, walk_state->aml_offset)); + + ACPI_DUMP_BUFFER (parser_state->aml, 128); + + /* Assume one-byte bad opcode */ + + parser_state->aml++; + continue; + + default: + + /* Found opcode info, this is a normal opcode */ + + parser_state->aml += acpi_ps_get_opcode_size (walk_state->opcode); + walk_state->arg_types = walk_state->op_info->parse_args; + break; + } + + /* Create Op structure and append to parent's argument list */ + + if (walk_state->op_info->flags & AML_NAMED) { + /* Allocate a new pre_op if necessary */ + + if (!pre_op) { + pre_op = acpi_ps_alloc_op (walk_state->opcode); + if (!pre_op) { + status = AE_NO_MEMORY; + goto close_this_op; + } + } + + pre_op->common.value.arg = NULL; + pre_op->common.aml_opcode = walk_state->opcode; + + /* + * Get and append arguments until we find the node that contains + * the name (the type ARGP_NAME). + */ + while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) && + (GET_CURRENT_ARG_TYPE (walk_state->arg_types) != ARGP_NAME)) { + status = acpi_ps_get_next_arg (walk_state, parser_state, + GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg); + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + + acpi_ps_append_arg (pre_op, arg); + INCREMENT_ARG_LIST (walk_state->arg_types); + } + + /* + * Make sure that we found a NAME and didn't run out of + * arguments + */ + if (!GET_CURRENT_ARG_TYPE (walk_state->arg_types)) { + status = AE_AML_NO_OPERAND; + goto close_this_op; + } + + /* We know that this arg is a name, move to next arg */ + + INCREMENT_ARG_LIST (walk_state->arg_types); + + /* + * Find the object. This will either insert the object into + * the namespace or simply look it up + */ + walk_state->op = NULL; + + status = walk_state->descending_callback (walk_state, &op); + if (ACPI_FAILURE (status)) { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "During name lookup/catalog, %s\n", + acpi_format_exception (status))); + goto close_this_op; + } + + if (!op) { + continue; + } + + status = acpi_ps_next_parse_state (walk_state, op, status); + if (status == AE_CTRL_PENDING) { + status = AE_OK; + goto close_this_op; + } + + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + + acpi_ps_append_arg (op, pre_op->common.value.arg); + acpi_gbl_depth++; + + if (op->common.aml_opcode == AML_REGION_OP) { + /* + * Defer final parsing of an operation_region body, + * because we don't have enough info in the first pass + * to parse it correctly (i.e., there may be method + * calls within the term_arg elements of the body.) + * + * However, we must continue parsing because + * the opregion is not a standalone package -- + * we don't know where the end is at this point. + * + * (Length is unknown until parse of the body complete) + */ + op->named.data = aml_op_start; + op->named.length = 0; + } + } + else { + /* Not a named opcode, just allocate Op and append to parent */ + + walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode); + op = acpi_ps_alloc_op (walk_state->opcode); + if (!op) { + status = AE_NO_MEMORY; + goto close_this_op; + } + + if (walk_state->op_info->flags & AML_CREATE) { + /* + * Backup to beginning of create_xXXfield declaration + * body_length is unknown until we parse the body + */ + op->named.data = aml_op_start; + op->named.length = 0; + } + + acpi_ps_append_arg (acpi_ps_get_parent_scope (parser_state), op); + + if ((walk_state->descending_callback != NULL)) { + /* + * Find the object. This will either insert the object into + * the namespace or simply look it up + */ + walk_state->op = op; + + status = walk_state->descending_callback (walk_state, &op); + status = acpi_ps_next_parse_state (walk_state, op, status); + if (status == AE_CTRL_PENDING) { + status = AE_OK; + goto close_this_op; + } + + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + } + } + + op->common.aml_offset = walk_state->aml_offset; + + if (walk_state->op_info) { + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, + "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n", + (u32) op->common.aml_opcode, walk_state->op_info->name, + op, parser_state->aml, op->common.aml_offset)); + } + } + + + /* + * Start arg_count at zero because we don't know if there are + * any args yet + */ + walk_state->arg_count = 0; + + /* Are there any arguments that must be processed? */ + + if (walk_state->arg_types) { + /* Get arguments */ + + switch (op->common.aml_opcode) { + case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ + case AML_WORD_OP: /* AML_WORDDATA_ARG */ + case AML_DWORD_OP: /* AML_DWORDATA_ARG */ + case AML_QWORD_OP: /* AML_QWORDATA_ARG */ + case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ + + /* Fill in constant or string argument directly */ + + acpi_ps_get_next_simple_arg (parser_state, + GET_CURRENT_ARG_TYPE (walk_state->arg_types), op); + break; + + case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ + + status = acpi_ps_get_next_namepath (walk_state, parser_state, op, 1); + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + + walk_state->arg_types = 0; + break; + + default: + /* + * Op is not a constant or string, append each argument + * to the Op + */ + while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) && + !walk_state->arg_count) { + walk_state->aml_offset = (u32) + ACPI_PTR_DIFF (parser_state->aml, parser_state->aml_start); + + status = acpi_ps_get_next_arg (walk_state, parser_state, + GET_CURRENT_ARG_TYPE (walk_state->arg_types), + &arg); + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + + if (arg) { + arg->common.aml_offset = walk_state->aml_offset; + acpi_ps_append_arg (op, arg); + } + INCREMENT_ARG_LIST (walk_state->arg_types); + } + + + /* Special processing for certain opcodes */ + + /* TBD (remove): Temporary mechanism to disable this code if needed */ + +#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE + + if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS1) && + ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) { + /* + * We want to skip If/Else/While constructs during Pass1 + * because we want to actually conditionally execute the + * code during Pass2. + * + * Except for disassembly, where we always want to + * walk the If/Else/While packages + */ + switch (op->common.aml_opcode) { + case AML_IF_OP: + case AML_ELSE_OP: + case AML_WHILE_OP: + + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, + "Pass1: Skipping an If/Else/While body\n")); + + /* Skip body of if/else/while in pass 1 */ + + parser_state->aml = parser_state->pkg_end; + walk_state->arg_count = 0; + break; + + default: + break; + } + } +#endif + switch (op->common.aml_opcode) { + case AML_METHOD_OP: + + /* + * Skip parsing of control method + * because we don't have enough info in the first pass + * to parse it correctly. + * + * Save the length and address of the body + */ + op->named.data = parser_state->aml; + op->named.length = (u32) (parser_state->pkg_end - + parser_state->aml); + + /* Skip body of method */ + + parser_state->aml = parser_state->pkg_end; + walk_state->arg_count = 0; + break; + + case AML_BUFFER_OP: + case AML_PACKAGE_OP: + case AML_VAR_PACKAGE_OP: + + if ((op->common.parent) && + (op->common.parent->common.aml_opcode == AML_NAME_OP) && + (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2)) { + /* + * Skip parsing of Buffers and Packages + * because we don't have enough info in the first pass + * to parse them correctly. + */ + op->named.data = aml_op_start; + op->named.length = (u32) (parser_state->pkg_end - + aml_op_start); + + /* Skip body */ + + parser_state->aml = parser_state->pkg_end; + walk_state->arg_count = 0; + } + break; + + case AML_WHILE_OP: + + if (walk_state->control_state) { + walk_state->control_state->control.package_end = + parser_state->pkg_end; + } + break; + + default: + + /* No action for all other opcodes */ + break; + } + break; + } + } + + /* Check for arguments that need to be processed */ + + if (walk_state->arg_count) { + /* + * There are arguments (complex ones), push Op and + * prepare for argument + */ + status = acpi_ps_push_scope (parser_state, op, + walk_state->arg_types, walk_state->arg_count); + if (ACPI_FAILURE (status)) { + goto close_this_op; + } + op = NULL; + continue; + } + + /* + * All arguments have been processed -- Op is complete, + * prepare for next + */ + walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); + if (walk_state->op_info->flags & AML_NAMED) { + if (acpi_gbl_depth) { + acpi_gbl_depth--; + } + + if (op->common.aml_opcode == AML_REGION_OP) { + /* + * Skip parsing of control method or opregion body, + * because we don't have enough info in the first pass + * to parse them correctly. + * + * Completed parsing an op_region declaration, we now + * know the length. + */ + op->named.length = (u32) (parser_state->aml - op->named.data); + } + } + + if (walk_state->op_info->flags & AML_CREATE) { + /* + * Backup to beginning of create_xXXfield declaration (1 for + * Opcode) + * + * body_length is unknown until we parse the body + */ + op->named.length = (u32) (parser_state->aml - op->named.data); + } + + /* This op complete, notify the dispatcher */ + + if (walk_state->ascending_callback != NULL) { + walk_state->op = op; + walk_state->opcode = op->common.aml_opcode; + + status = walk_state->ascending_callback (walk_state); + status = acpi_ps_next_parse_state (walk_state, op, status); + if (status == AE_CTRL_PENDING) { + status = AE_OK; + goto close_this_op; + } + } + + +close_this_op: + /* + * Finished one argument of the containing scope + */ + parser_state->scope->parse_scope.arg_count--; + + /* Finished with pre_op */ + + if (pre_op) { + acpi_ps_free_op (pre_op); + pre_op = NULL; + } + + /* Close this Op (will result in parse subtree deletion) */ + + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + op = NULL; + + switch (status) { + case AE_OK: + break; + + + case AE_CTRL_TRANSFER: + + /* We are about to transfer to a called method. */ + + walk_state->prev_op = op; + walk_state->prev_arg_types = walk_state->arg_types; + return_ACPI_STATUS (status); + + + case AE_CTRL_END: + + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + + if (op) { + walk_state->op = op; + walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); + walk_state->opcode = op->common.aml_opcode; + + status = walk_state->ascending_callback (walk_state); + status = acpi_ps_next_parse_state (walk_state, op, status); + + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + op = NULL; + } + status = AE_OK; + break; + + + case AE_CTRL_BREAK: + case AE_CTRL_CONTINUE: + + /* Pop off scopes until we find the While */ + + while (!op || (op->common.aml_opcode != AML_WHILE_OP)) { + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + } + + /* Close this iteration of the While loop */ + + walk_state->op = op; + walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); + walk_state->opcode = op->common.aml_opcode; + + status = walk_state->ascending_callback (walk_state); + status = acpi_ps_next_parse_state (walk_state, op, status); + + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + op = NULL; + + status = AE_OK; + break; + + + case AE_CTRL_TERMINATE: + + status = AE_OK; + + /* Clean up */ + do { + if (op) { + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + } + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + + } while (op); + + return_ACPI_STATUS (status); + + + default: /* All other non-AE_OK status */ + + do { + if (op) { + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + } + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + + } while (op); + + + /* + * TBD: Cleanup parse ops on error + */ +#if 0 + if (op == NULL) { + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + } +#endif + walk_state->prev_op = op; + walk_state->prev_arg_types = walk_state->arg_types; + return_ACPI_STATUS (status); + } + + /* This scope complete? */ + + if (acpi_ps_has_completed_scope (parser_state)) { + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op)); + } + else { + op = NULL; + } + + } /* while parser_state->Aml */ + + + /* + * Complete the last Op (if not completed), and clear the scope stack. + * It is easily possible to end an AML "package" with an unbounded number + * of open scopes (such as when several ASL blocks are closed with + * sequential closing braces). We want to terminate each one cleanly. + */ + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", op)); + do { + if (op) { + if (walk_state->ascending_callback != NULL) { + walk_state->op = op; + walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); + walk_state->opcode = op->common.aml_opcode; + + status = walk_state->ascending_callback (walk_state); + status = acpi_ps_next_parse_state (walk_state, op, status); + if (status == AE_CTRL_PENDING) { + status = AE_OK; + goto close_this_op; + } + + if (status == AE_CTRL_TERMINATE) { + status = AE_OK; + + /* Clean up */ + do { + if (op) { + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + } + + acpi_ps_pop_scope (parser_state, &op, + &walk_state->arg_types, &walk_state->arg_count); + + } while (op); + + return_ACPI_STATUS (status); + } + + else if (ACPI_FAILURE (status)) { + /* First error is most important */ + + (void) acpi_ps_complete_this_op (walk_state, op); + return_ACPI_STATUS (status); + } + } + + status2 = acpi_ps_complete_this_op (walk_state, op); + if (ACPI_FAILURE (status2)) { + return_ACPI_STATUS (status2); + } + } + + acpi_ps_pop_scope (parser_state, &op, &walk_state->arg_types, + &walk_state->arg_count); + + } while (op); + + return_ACPI_STATUS (status); +} + + diff --git a/drivers/acpi/parser/psopcode.c b/drivers/acpi/parser/psopcode.c index 5744673568c..6f7594a516d 100644 --- a/drivers/acpi/parser/psopcode.c +++ b/drivers/acpi/parser/psopcode.c @@ -311,7 +311,7 @@ const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES] = /* ACPI 2.0 opcodes */ /* 6E */ ACPI_OP ("QwordConst", ARGP_QWORD_OP, ARGI_QWORD_OP, ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT, AML_TYPE_LITERAL, AML_CONSTANT), -/* 6F */ ACPI_OP ("Package /*Var*/", ARGP_VAR_PACKAGE_OP, ARGI_VAR_PACKAGE_OP, ACPI_TYPE_PACKAGE, AML_CLASS_CREATE, AML_TYPE_CREATE_OBJECT, AML_HAS_ARGS | AML_DEFER), +/* 6F */ ACPI_OP ("Package", /* Var */ ARGP_VAR_PACKAGE_OP, ARGI_VAR_PACKAGE_OP, ACPI_TYPE_PACKAGE, AML_CLASS_CREATE, AML_TYPE_CREATE_OBJECT, AML_HAS_ARGS | AML_DEFER), /* 70 */ ACPI_OP ("ConcatenateResTemplate", ARGP_CONCAT_RES_OP, ARGI_CONCAT_RES_OP, ACPI_TYPE_ANY, AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R, AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT), /* 71 */ ACPI_OP ("Mod", ARGP_MOD_OP, ARGI_MOD_OP, ACPI_TYPE_ANY, AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R, AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT), /* 72 */ ACPI_OP ("CreateQWordField", ARGP_CREATE_QWORD_FIELD_OP,ARGI_CREATE_QWORD_FIELD_OP, ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE, AML_TYPE_CREATE_FIELD, AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE | AML_DEFER | AML_CREATE), @@ -428,33 +428,23 @@ acpi_ps_get_opcode_info ( /* * Detect normal 8-bit opcode or extended 16-bit opcode */ - switch ((u8) (opcode >> 8)) { - case 0: - + if (!(opcode & 0xFF00)) { /* Simple (8-bit) opcode: 0-255, can't index beyond table */ return (&acpi_gbl_aml_op_info [acpi_gbl_short_op_index [(u8) opcode]]); + } - case AML_EXTOP: - - /* Extended (16-bit, prefix+opcode) opcode */ - - if (((u8) opcode) <= MAX_EXTENDED_OPCODE) { - return (&acpi_gbl_aml_op_info [acpi_gbl_long_op_index [(u8) opcode]]); - } - - /* Else fall through to error case below */ - /*lint -fallthrough */ - - default: + if (((opcode & 0xFF00) == AML_EXTENDED_OPCODE) && + (((u8) opcode) <= MAX_EXTENDED_OPCODE)) { + /* Valid extended (16-bit) opcode */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Unknown AML opcode [%4.4X]\n", opcode)); - break; + return (&acpi_gbl_aml_op_info [acpi_gbl_long_op_index [(u8) opcode]]); } + /* Unknown AML opcode */ - /* Default is "unknown opcode" */ + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Unknown AML opcode [%4.4X]\n", opcode)); return (&acpi_gbl_aml_op_info [_UNK]); } diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c index bbfdc1a58c2..16b84a3d043 100644 --- a/drivers/acpi/parser/psparse.c +++ b/drivers/acpi/parser/psparse.c @@ -62,26 +62,6 @@ ACPI_MODULE_NAME ("psparse") -static u32 acpi_gbl_depth = 0; - -/* Local prototypes */ - -static void -acpi_ps_complete_this_op ( - struct acpi_walk_state *walk_state, - union acpi_parse_object *op); - -static acpi_status -acpi_ps_next_parse_state ( - struct acpi_walk_state *walk_state, - union acpi_parse_object *op, - acpi_status callback_status); - -static acpi_status -acpi_ps_parse_loop ( - struct acpi_walk_state *walk_state); - - /******************************************************************************* * * FUNCTION: acpi_ps_get_opcode_size @@ -134,8 +114,8 @@ acpi_ps_peek_opcode ( aml = parser_state->aml; opcode = (u16) ACPI_GET8 (aml); - if (opcode == AML_EXTOP) { - /* Extended opcode */ + if (opcode == AML_EXTENDED_OP_PREFIX) { + /* Extended opcode, get the second opcode byte */ aml++; opcode = (u16) ((opcode << 8) | ACPI_GET8 (aml)); @@ -152,13 +132,13 @@ acpi_ps_peek_opcode ( * PARAMETERS: walk_state - Current State * Op - Op to complete * - * RETURN: None. + * RETURN: Status * * DESCRIPTION: Perform any cleanup at the completion of an Op. * ******************************************************************************/ -static void +acpi_status acpi_ps_complete_this_op ( struct acpi_walk_state *walk_state, union acpi_parse_object *op) @@ -175,19 +155,26 @@ acpi_ps_complete_this_op ( /* Check for null Op, can happen if AML code is corrupt */ if (!op) { - return_VOID; + return_ACPI_STATUS (AE_OK); /* OK for now */ } /* Delete this op and the subtree below it if asked to */ if (((walk_state->parse_flags & ACPI_PARSE_TREE_MASK) != ACPI_PARSE_DELETE_TREE) || (walk_state->op_info->class == AML_CLASS_ARGUMENT)) { - return_VOID; + return_ACPI_STATUS (AE_OK); } /* Make sure that we only delete this subtree */ if (op->common.parent) { + prev = op->common.parent->common.value.arg; + if (!prev) { + /* Nothing more to do */ + + goto cleanup; + } + /* * Check if we need to replace the operator and its subtree * with a return value op (placeholder op) @@ -206,7 +193,7 @@ acpi_ps_complete_this_op ( */ replacement_op = acpi_ps_alloc_op (AML_INT_RETURN_VALUE_OP); if (!replacement_op) { - goto cleanup; + goto allocate_error; } break; @@ -223,18 +210,17 @@ acpi_ps_complete_this_op ( (op->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) { replacement_op = acpi_ps_alloc_op (AML_INT_RETURN_VALUE_OP); if (!replacement_op) { - goto cleanup; + goto allocate_error; } } - - if ((op->common.parent->common.aml_opcode == AML_NAME_OP) && - (walk_state->descending_callback != acpi_ds_exec_begin_op)) { + else if ((op->common.parent->common.aml_opcode == AML_NAME_OP) && + (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2)) { if ((op->common.aml_opcode == AML_BUFFER_OP) || (op->common.aml_opcode == AML_PACKAGE_OP) || (op->common.aml_opcode == AML_VAR_PACKAGE_OP)) { replacement_op = acpi_ps_alloc_op (op->common.aml_opcode); if (!replacement_op) { - goto cleanup; + goto allocate_error; } replacement_op->named.data = op->named.data; @@ -244,15 +230,15 @@ acpi_ps_complete_this_op ( break; default: + replacement_op = acpi_ps_alloc_op (AML_INT_RETURN_VALUE_OP); if (!replacement_op) { - goto cleanup; + goto allocate_error; } } /* We must unlink this op from the parent tree */ - prev = op->common.parent->common.value.arg; if (prev == op) { /* This op is the first in the list */ @@ -298,7 +284,15 @@ cleanup: /* Now we can actually delete the subtree rooted at Op */ acpi_ps_delete_parse_tree (op); - return_VOID; + return_ACPI_STATUS (AE_OK); + + +allocate_error: + + /* Always delete the subtree, even on error */ + + acpi_ps_delete_parse_tree (op); + return_ACPI_STATUS (AE_NO_MEMORY); } @@ -317,7 +311,7 @@ cleanup: * ******************************************************************************/ -static acpi_status +acpi_status acpi_ps_next_parse_state ( struct acpi_walk_state *walk_state, union acpi_parse_object *op, @@ -427,663 +421,6 @@ acpi_ps_next_parse_state ( /******************************************************************************* * - * FUNCTION: acpi_ps_parse_loop - * - * PARAMETERS: walk_state - Current state - * - * RETURN: Status - * - * DESCRIPTION: Parse AML (pointed to by the current parser state) and return - * a tree of ops. - * - ******************************************************************************/ - -static acpi_status -acpi_ps_parse_loop ( - struct acpi_walk_state *walk_state) -{ - acpi_status status = AE_OK; - union acpi_parse_object *op = NULL; /* current op */ - union acpi_parse_object *arg = NULL; - union acpi_parse_object *pre_op = NULL; - struct acpi_parse_state *parser_state; - u8 *aml_op_start = NULL; - - - ACPI_FUNCTION_TRACE_PTR ("ps_parse_loop", walk_state); - - if (walk_state->descending_callback == NULL) { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - parser_state = &walk_state->parser_state; - walk_state->arg_types = 0; - -#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) - - if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { - /* We are restarting a preempted control method */ - - if (acpi_ps_has_completed_scope (parser_state)) { - /* - * We must check if a predicate to an IF or WHILE statement - * was just completed - */ - if ((parser_state->scope->parse_scope.op) && - ((parser_state->scope->parse_scope.op->common.aml_opcode == AML_IF_OP) || - (parser_state->scope->parse_scope.op->common.aml_opcode == AML_WHILE_OP)) && - (walk_state->control_state) && - (walk_state->control_state->common.state == - ACPI_CONTROL_PREDICATE_EXECUTING)) { - /* - * A predicate was just completed, get the value of the - * predicate and branch based on that value - */ - walk_state->op = NULL; - status = acpi_ds_get_predicate_value (walk_state, ACPI_TO_POINTER (TRUE)); - if (ACPI_FAILURE (status) && - ((status & AE_CODE_MASK) != AE_CODE_CONTROL)) { - if (status == AE_AML_NO_RETURN_VALUE) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invoked method did not return a value, %s\n", - acpi_format_exception (status))); - - } - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "get_predicate Failed, %s\n", - acpi_format_exception (status))); - return_ACPI_STATUS (status); - } - - status = acpi_ps_next_parse_state (walk_state, op, status); - } - - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op)); - } - else if (walk_state->prev_op) { - /* We were in the middle of an op */ - - op = walk_state->prev_op; - walk_state->arg_types = walk_state->prev_arg_types; - } - } -#endif - - /* Iterative parsing loop, while there is more AML to process: */ - - while ((parser_state->aml < parser_state->aml_end) || (op)) { - aml_op_start = parser_state->aml; - if (!op) { - /* Get the next opcode from the AML stream */ - - walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml, - parser_state->aml_start); - walk_state->opcode = acpi_ps_peek_opcode (parser_state); - - /* - * First cut to determine what we have found: - * 1) A valid AML opcode - * 2) A name string - * 3) An unknown/invalid opcode - */ - walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode); - switch (walk_state->op_info->class) { - case AML_CLASS_ASCII: - case AML_CLASS_PREFIX: - /* - * Starts with a valid prefix or ASCII char, this is a name - * string. Convert the bare name string to a namepath. - */ - walk_state->opcode = AML_INT_NAMEPATH_OP; - walk_state->arg_types = ARGP_NAMESTRING; - break; - - case AML_CLASS_UNKNOWN: - - /* The opcode is unrecognized. Just skip unknown opcodes */ - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Found unknown opcode %X at AML address %p offset %X, ignoring\n", - walk_state->opcode, parser_state->aml, walk_state->aml_offset)); - - ACPI_DUMP_BUFFER (parser_state->aml, 128); - - /* Assume one-byte bad opcode */ - - parser_state->aml++; - continue; - - default: - - /* Found opcode info, this is a normal opcode */ - - parser_state->aml += acpi_ps_get_opcode_size (walk_state->opcode); - walk_state->arg_types = walk_state->op_info->parse_args; - break; - } - - /* Create Op structure and append to parent's argument list */ - - if (walk_state->op_info->flags & AML_NAMED) { - /* Allocate a new pre_op if necessary */ - - if (!pre_op) { - pre_op = acpi_ps_alloc_op (walk_state->opcode); - if (!pre_op) { - status = AE_NO_MEMORY; - goto close_this_op; - } - } - - pre_op->common.value.arg = NULL; - pre_op->common.aml_opcode = walk_state->opcode; - - /* - * Get and append arguments until we find the node that contains - * the name (the type ARGP_NAME). - */ - while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) && - (GET_CURRENT_ARG_TYPE (walk_state->arg_types) != ARGP_NAME)) { - status = acpi_ps_get_next_arg (walk_state, parser_state, - GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg); - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - - acpi_ps_append_arg (pre_op, arg); - INCREMENT_ARG_LIST (walk_state->arg_types); - } - - /* - * Make sure that we found a NAME and didn't run out of - * arguments - */ - if (!GET_CURRENT_ARG_TYPE (walk_state->arg_types)) { - status = AE_AML_NO_OPERAND; - goto close_this_op; - } - - /* We know that this arg is a name, move to next arg */ - - INCREMENT_ARG_LIST (walk_state->arg_types); - - /* - * Find the object. This will either insert the object into - * the namespace or simply look it up - */ - walk_state->op = NULL; - - status = walk_state->descending_callback (walk_state, &op); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "During name lookup/catalog, %s\n", - acpi_format_exception (status))); - goto close_this_op; - } - - if (!op) { - continue; - } - - status = acpi_ps_next_parse_state (walk_state, op, status); - if (status == AE_CTRL_PENDING) { - status = AE_OK; - goto close_this_op; - } - - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - - acpi_ps_append_arg (op, pre_op->common.value.arg); - acpi_gbl_depth++; - - if (op->common.aml_opcode == AML_REGION_OP) { - /* - * Defer final parsing of an operation_region body, - * because we don't have enough info in the first pass - * to parse it correctly (i.e., there may be method - * calls within the term_arg elements of the body.) - * - * However, we must continue parsing because - * the opregion is not a standalone package -- - * we don't know where the end is at this point. - * - * (Length is unknown until parse of the body complete) - */ - op->named.data = aml_op_start; - op->named.length = 0; - } - } - else { - /* Not a named opcode, just allocate Op and append to parent */ - - walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode); - op = acpi_ps_alloc_op (walk_state->opcode); - if (!op) { - status = AE_NO_MEMORY; - goto close_this_op; - } - - if (walk_state->op_info->flags & AML_CREATE) { - /* - * Backup to beginning of create_xXXfield declaration - * body_length is unknown until we parse the body - */ - op->named.data = aml_op_start; - op->named.length = 0; - } - - acpi_ps_append_arg (acpi_ps_get_parent_scope (parser_state), op); - - if ((walk_state->descending_callback != NULL)) { - /* - * Find the object. This will either insert the object into - * the namespace or simply look it up - */ - walk_state->op = op; - - status = walk_state->descending_callback (walk_state, &op); - status = acpi_ps_next_parse_state (walk_state, op, status); - if (status == AE_CTRL_PENDING) { - status = AE_OK; - goto close_this_op; - } - - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - } - } - - op->common.aml_offset = walk_state->aml_offset; - - if (walk_state->op_info) { - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n", - (u32) op->common.aml_opcode, walk_state->op_info->name, - op, parser_state->aml, op->common.aml_offset)); - } - } - - - /* - * Start arg_count at zero because we don't know if there are - * any args yet - */ - walk_state->arg_count = 0; - - /* Are there any arguments that must be processed? */ - - if (walk_state->arg_types) { - /* Get arguments */ - - switch (op->common.aml_opcode) { - case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ - case AML_WORD_OP: /* AML_WORDDATA_ARG */ - case AML_DWORD_OP: /* AML_DWORDATA_ARG */ - case AML_QWORD_OP: /* AML_QWORDATA_ARG */ - case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ - - /* Fill in constant or string argument directly */ - - acpi_ps_get_next_simple_arg (parser_state, - GET_CURRENT_ARG_TYPE (walk_state->arg_types), op); - break; - - case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ - - status = acpi_ps_get_next_namepath (walk_state, parser_state, op, 1); - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - - walk_state->arg_types = 0; - break; - - default: - - /* - * Op is not a constant or string, append each argument - * to the Op - */ - while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) && - !walk_state->arg_count) { - walk_state->aml_offset = (u32) - ACPI_PTR_DIFF (parser_state->aml, parser_state->aml_start); - - status = acpi_ps_get_next_arg (walk_state, parser_state, - GET_CURRENT_ARG_TYPE (walk_state->arg_types), - &arg); - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - - if (arg) { - arg->common.aml_offset = walk_state->aml_offset; - acpi_ps_append_arg (op, arg); - } - INCREMENT_ARG_LIST (walk_state->arg_types); - } - - /* Special processing for certain opcodes */ - - switch (op->common.aml_opcode) { - case AML_METHOD_OP: - - /* - * Skip parsing of control method - * because we don't have enough info in the first pass - * to parse it correctly. - * - * Save the length and address of the body - */ - op->named.data = parser_state->aml; - op->named.length = (u32) (parser_state->pkg_end - - parser_state->aml); - - /* Skip body of method */ - - parser_state->aml = parser_state->pkg_end; - walk_state->arg_count = 0; - break; - - case AML_BUFFER_OP: - case AML_PACKAGE_OP: - case AML_VAR_PACKAGE_OP: - - if ((op->common.parent) && - (op->common.parent->common.aml_opcode == AML_NAME_OP) && - (walk_state->descending_callback != acpi_ds_exec_begin_op)) { - /* - * Skip parsing of Buffers and Packages - * because we don't have enough info in the first pass - * to parse them correctly. - */ - op->named.data = aml_op_start; - op->named.length = (u32) (parser_state->pkg_end - - aml_op_start); - - /* Skip body */ - - parser_state->aml = parser_state->pkg_end; - walk_state->arg_count = 0; - } - break; - - case AML_WHILE_OP: - - if (walk_state->control_state) { - walk_state->control_state->control.package_end = - parser_state->pkg_end; - } - break; - - default: - - /* No action for all other opcodes */ - break; - } - break; - } - } - - /* Check for arguments that need to be processed */ - - if (walk_state->arg_count) { - /* - * There are arguments (complex ones), push Op and - * prepare for argument - */ - status = acpi_ps_push_scope (parser_state, op, - walk_state->arg_types, walk_state->arg_count); - if (ACPI_FAILURE (status)) { - goto close_this_op; - } - op = NULL; - continue; - } - - /* - * All arguments have been processed -- Op is complete, - * prepare for next - */ - walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); - if (walk_state->op_info->flags & AML_NAMED) { - if (acpi_gbl_depth) { - acpi_gbl_depth--; - } - - if (op->common.aml_opcode == AML_REGION_OP) { - /* - * Skip parsing of control method or opregion body, - * because we don't have enough info in the first pass - * to parse them correctly. - * - * Completed parsing an op_region declaration, we now - * know the length. - */ - op->named.length = (u32) (parser_state->aml - op->named.data); - } - } - - if (walk_state->op_info->flags & AML_CREATE) { - /* - * Backup to beginning of create_xXXfield declaration (1 for - * Opcode) - * - * body_length is unknown until we parse the body - */ - op->named.length = (u32) (parser_state->aml - op->named.data); - } - - /* This op complete, notify the dispatcher */ - - if (walk_state->ascending_callback != NULL) { - walk_state->op = op; - walk_state->opcode = op->common.aml_opcode; - - status = walk_state->ascending_callback (walk_state); - status = acpi_ps_next_parse_state (walk_state, op, status); - if (status == AE_CTRL_PENDING) { - status = AE_OK; - goto close_this_op; - } - } - - -close_this_op: - /* - * Finished one argument of the containing scope - */ - parser_state->scope->parse_scope.arg_count--; - - /* Close this Op (will result in parse subtree deletion) */ - - acpi_ps_complete_this_op (walk_state, op); - op = NULL; - if (pre_op) { - acpi_ps_free_op (pre_op); - pre_op = NULL; - } - - switch (status) { - case AE_OK: - break; - - - case AE_CTRL_TRANSFER: - - /* We are about to transfer to a called method. */ - - walk_state->prev_op = op; - walk_state->prev_arg_types = walk_state->arg_types; - return_ACPI_STATUS (status); - - - case AE_CTRL_END: - - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - - if (op) { - walk_state->op = op; - walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); - walk_state->opcode = op->common.aml_opcode; - - status = walk_state->ascending_callback (walk_state); - status = acpi_ps_next_parse_state (walk_state, op, status); - - acpi_ps_complete_this_op (walk_state, op); - op = NULL; - } - status = AE_OK; - break; - - - case AE_CTRL_BREAK: - case AE_CTRL_CONTINUE: - - /* Pop off scopes until we find the While */ - - while (!op || (op->common.aml_opcode != AML_WHILE_OP)) { - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - } - - /* Close this iteration of the While loop */ - - walk_state->op = op; - walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); - walk_state->opcode = op->common.aml_opcode; - - status = walk_state->ascending_callback (walk_state); - status = acpi_ps_next_parse_state (walk_state, op, status); - - acpi_ps_complete_this_op (walk_state, op); - op = NULL; - - status = AE_OK; - break; - - - case AE_CTRL_TERMINATE: - - status = AE_OK; - - /* Clean up */ - do { - if (op) { - acpi_ps_complete_this_op (walk_state, op); - } - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - - } while (op); - - return_ACPI_STATUS (status); - - - default: /* All other non-AE_OK status */ - - do { - if (op) { - acpi_ps_complete_this_op (walk_state, op); - } - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - - } while (op); - - - /* - * TBD: Cleanup parse ops on error - */ -#if 0 - if (op == NULL) { - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - } -#endif - walk_state->prev_op = op; - walk_state->prev_arg_types = walk_state->arg_types; - return_ACPI_STATUS (status); - } - - /* This scope complete? */ - - if (acpi_ps_has_completed_scope (parser_state)) { - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op)); - } - else { - op = NULL; - } - - } /* while parser_state->Aml */ - - - /* - * Complete the last Op (if not completed), and clear the scope stack. - * It is easily possible to end an AML "package" with an unbounded number - * of open scopes (such as when several ASL blocks are closed with - * sequential closing braces). We want to terminate each one cleanly. - */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", op)); - do { - if (op) { - if (walk_state->ascending_callback != NULL) { - walk_state->op = op; - walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); - walk_state->opcode = op->common.aml_opcode; - - status = walk_state->ascending_callback (walk_state); - status = acpi_ps_next_parse_state (walk_state, op, status); - if (status == AE_CTRL_PENDING) { - status = AE_OK; - goto close_this_op; - } - - if (status == AE_CTRL_TERMINATE) { - status = AE_OK; - - /* Clean up */ - do { - if (op) { - acpi_ps_complete_this_op (walk_state, op); - } - - acpi_ps_pop_scope (parser_state, &op, - &walk_state->arg_types, &walk_state->arg_count); - - } while (op); - - return_ACPI_STATUS (status); - } - - else if (ACPI_FAILURE (status)) { - acpi_ps_complete_this_op (walk_state, op); - return_ACPI_STATUS (status); - } - } - - acpi_ps_complete_this_op (walk_state, op); - } - - acpi_ps_pop_scope (parser_state, &op, &walk_state->arg_types, - &walk_state->arg_count); - - } while (op); - - return_ACPI_STATUS (status); -} - - -/******************************************************************************* - * * FUNCTION: acpi_ps_parse_aml * * PARAMETERS: walk_state - Current state diff --git a/drivers/acpi/parser/psutils.c b/drivers/acpi/parser/psutils.c index a10f88715d4..4221b41ae1a 100644 --- a/drivers/acpi/parser/psutils.c +++ b/drivers/acpi/parser/psutils.c @@ -154,12 +154,14 @@ acpi_ps_alloc_op ( if (flags == ACPI_PARSEOP_GENERIC) { /* The generic op (default) is by far the most common (16 to 1) */ - op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE); + op = acpi_os_acquire_object (acpi_gbl_ps_node_cache); + memset(op, 0, sizeof(struct acpi_parse_obj_common)); } else { /* Extended parseop */ - op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE_EXT); + op = acpi_os_acquire_object (acpi_gbl_ps_node_ext_cache); + memset(op, 0, sizeof(struct acpi_parse_obj_named)); } /* Initialize the Op */ @@ -198,41 +200,14 @@ acpi_ps_free_op ( } if (op->common.flags & ACPI_PARSEOP_GENERIC) { - acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE, op); + (void) acpi_os_release_object (acpi_gbl_ps_node_cache, op); } else { - acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE_EXT, op); + (void) acpi_os_release_object (acpi_gbl_ps_node_ext_cache, op); } } -#ifdef ACPI_ENABLE_OBJECT_CACHE -/******************************************************************************* - * - * FUNCTION: acpi_ps_delete_parse_cache - * - * PARAMETERS: None - * - * RETURN: None - * - * DESCRIPTION: Free all objects that are on the parse cache list. - * - ******************************************************************************/ - -void -acpi_ps_delete_parse_cache ( - void) -{ - ACPI_FUNCTION_TRACE ("ps_delete_parse_cache"); - - - acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE); - acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE_EXT); - return_VOID; -} -#endif - - /******************************************************************************* * * FUNCTION: Utility functions diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/parser/psxface.c index dba893648e8..d1541fabaf0 100644 --- a/drivers/acpi/parser/psxface.c +++ b/drivers/acpi/parser/psxface.c @@ -46,19 +46,30 @@ #include <acpi/acparser.h> #include <acpi/acdispat.h> #include <acpi/acinterp.h> -#include <acpi/acnamesp.h> #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME ("psxface") +/* Local Prototypes */ + +static acpi_status +acpi_ps_execute_pass ( + struct acpi_parameter_info *info); + +static void +acpi_ps_update_parameter_list ( + struct acpi_parameter_info *info, + u16 action); + /******************************************************************************* * - * FUNCTION: acpi_psx_execute + * FUNCTION: acpi_ps_execute_method * * PARAMETERS: Info - Method info block, contains: * Node - Method Node to execute + * obj_desc - Method object * Parameters - List of parameters to pass to the method, * terminated by NULL. Params itself may be * NULL if no parameters are being passed. @@ -67,6 +78,7 @@ * parameter_type - Type of Parameter list * return_object - Where to put method's return value (if * any). If NULL, no value is returned. + * pass_number - Parse or execute pass * * RETURN: Status * @@ -75,171 +87,194 @@ ******************************************************************************/ acpi_status -acpi_psx_execute ( +acpi_ps_execute_method ( struct acpi_parameter_info *info) { acpi_status status; - union acpi_operand_object *obj_desc; - u32 i; - union acpi_parse_object *op; - struct acpi_walk_state *walk_state; - ACPI_FUNCTION_TRACE ("psx_execute"); + ACPI_FUNCTION_TRACE ("ps_execute_method"); - /* Validate the Node and get the attached object */ + /* Validate the Info and method Node */ if (!info || !info->node) { return_ACPI_STATUS (AE_NULL_ENTRY); } - obj_desc = acpi_ns_get_attached_object (info->node); - if (!obj_desc) { - return_ACPI_STATUS (AE_NULL_OBJECT); - } - /* Init for new method, wait on concurrency semaphore */ - status = acpi_ds_begin_method_execution (info->node, obj_desc, NULL); + status = acpi_ds_begin_method_execution (info->node, info->obj_desc, NULL); if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } - if ((info->parameter_type == ACPI_PARAM_ARGS) && - (info->parameters)) { - /* - * The caller "owns" the parameters, so give each one an extra - * reference - */ - for (i = 0; info->parameters[i]; i++) { - acpi_ut_add_reference (info->parameters[i]); - } - } - - /* - * 1) Perform the first pass parse of the method to enter any - * named objects that it creates into the namespace - */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "**** Begin Method Parse **** Entry=%p obj=%p\n", - info->node, obj_desc)); - - /* Create and init a Root Node */ - - op = acpi_ps_create_scope_op (); - if (!op) { - status = AE_NO_MEMORY; - goto cleanup1; - } - /* * Get a new owner_id for objects created by this method. Namespace * objects (such as Operation Regions) can be created during the * first pass parse. */ - obj_desc->method.owning_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD); - - /* Create and initialize a new walk state */ - - walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id, - NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup2; - } - - status = acpi_ds_init_aml_walk (walk_state, op, info->node, - obj_desc->method.aml_start, - obj_desc->method.aml_length, NULL, 1); + status = acpi_ut_allocate_owner_id (&info->obj_desc->method.owner_id); if (ACPI_FAILURE (status)) { - goto cleanup3; + return_ACPI_STATUS (status); } - /* Parse the AML */ + /* + * The caller "owns" the parameters, so give each one an extra + * reference + */ + acpi_ps_update_parameter_list (info, REF_INCREMENT); - status = acpi_ps_parse_aml (walk_state); - acpi_ps_delete_parse_tree (op); + /* + * 1) Perform the first pass parse of the method to enter any + * named objects that it creates into the namespace + */ + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, + "**** Begin Method Parse **** Entry=%p obj=%p\n", + info->node, info->obj_desc)); + + info->pass_number = 1; + status = acpi_ps_execute_pass (info); if (ACPI_FAILURE (status)) { - goto cleanup1; /* Walk state is already deleted */ + goto cleanup; } /* - * 2) Execute the method. Performs second pass parse simultaneously + * 2) Execute the method. Performs second pass parse simultaneously */ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Begin Method Execution **** Entry=%p obj=%p\n", - info->node, obj_desc)); + info->node, info->obj_desc)); - /* Create and init a Root Node */ + info->pass_number = 3; + status = acpi_ps_execute_pass (info); - op = acpi_ps_create_scope_op (); - if (!op) { - status = AE_NO_MEMORY; - goto cleanup1; + +cleanup: + if (info->obj_desc->method.owner_id) { + acpi_ut_release_owner_id (&info->obj_desc->method.owner_id); } - /* Init new op with the method name and pointer back to the NS node */ + /* Take away the extra reference that we gave the parameters above */ - acpi_ps_set_name (op, info->node->name.integer); - op->common.node = info->node; + acpi_ps_update_parameter_list (info, REF_DECREMENT); - /* Create and initialize a new walk state */ + /* Exit now if error above */ - walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL); - if (!walk_state) { - status = AE_NO_MEMORY; - goto cleanup2; + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); } - status = acpi_ds_init_aml_walk (walk_state, op, info->node, - obj_desc->method.aml_start, - obj_desc->method.aml_length, info, 3); - if (ACPI_FAILURE (status)) { - goto cleanup3; + /* + * If the method has returned an object, signal this to the caller with + * a control exception code + */ + if (info->return_object) { + ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n", + info->return_object)); + ACPI_DUMP_STACK_ENTRY (info->return_object); + + status = AE_CTRL_RETURN_VALUE; } - /* The walk of the parse tree is where we actually execute the method */ + return_ACPI_STATUS (status); +} - status = acpi_ps_parse_aml (walk_state); - goto cleanup2; /* Walk state already deleted */ +/******************************************************************************* + * + * FUNCTION: acpi_ps_update_parameter_list + * + * PARAMETERS: Info - See struct acpi_parameter_info + * (Used: parameter_type and Parameters) + * Action - Add or Remove reference + * + * RETURN: Status + * + * DESCRIPTION: Update reference count on all method parameter objects + * + ******************************************************************************/ -cleanup3: - acpi_ds_delete_walk_state (walk_state); +static void +acpi_ps_update_parameter_list ( + struct acpi_parameter_info *info, + u16 action) +{ + acpi_native_uint i; -cleanup2: - acpi_ps_delete_parse_tree (op); -cleanup1: if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) { - /* Take away the extra reference that we gave the parameters above */ + /* Update reference count for each parameter */ for (i = 0; info->parameters[i]; i++) { /* Ignore errors, just do them all */ - (void) acpi_ut_update_object_reference ( - info->parameters[i], REF_DECREMENT); + (void) acpi_ut_update_object_reference (info->parameters[i], action); } } +} - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + +/******************************************************************************* + * + * FUNCTION: acpi_ps_execute_pass + * + * PARAMETERS: Info - See struct acpi_parameter_info + * (Used: pass_number, Node, and obj_desc) + * + * RETURN: Status + * + * DESCRIPTION: Single AML pass: Parse or Execute a control method + * + ******************************************************************************/ + +static acpi_status +acpi_ps_execute_pass ( + struct acpi_parameter_info *info) +{ + acpi_status status; + union acpi_parse_object *op; + struct acpi_walk_state *walk_state; + + + ACPI_FUNCTION_TRACE ("ps_execute_pass"); + + + /* Create and init a Root Node */ + + op = acpi_ps_create_scope_op (); + if (!op) { + return_ACPI_STATUS (AE_NO_MEMORY); } - /* - * If the method has returned an object, signal this to the caller with - * a control exception code - */ - if (info->return_object) { - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n", - info->return_object)); - ACPI_DUMP_STACK_ENTRY (info->return_object); + /* Create and initialize a new walk state */ - status = AE_CTRL_RETURN_VALUE; + walk_state = acpi_ds_create_walk_state ( + info->obj_desc->method.owner_id, NULL, NULL, NULL); + if (!walk_state) { + status = AE_NO_MEMORY; + goto cleanup; + } + + status = acpi_ds_init_aml_walk (walk_state, op, info->node, + info->obj_desc->method.aml_start, + info->obj_desc->method.aml_length, + info->pass_number == 1 ? NULL : info, + info->pass_number); + if (ACPI_FAILURE (status)) { + acpi_ds_delete_walk_state (walk_state); + goto cleanup; } + /* Parse the AML */ + + status = acpi_ps_parse_aml (walk_state); + + /* Walk state was deleted by parse_aml */ + +cleanup: + acpi_ps_delete_parse_tree (op); return_ACPI_STATUS (status); } |