diff options
Diffstat (limited to 'drivers/acpi/acpica/dswload.c')
| -rw-r--r-- | drivers/acpi/acpica/dswload.c | 1203 |
1 files changed, 1203 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c new file mode 100644 index 000000000000..2d71ceda3d56 --- /dev/null +++ b/drivers/acpi/acpica/dswload.c @@ -0,0 +1,1203 @@ +/****************************************************************************** + * + * Module Name: dswload - Dispatcher namespace load callbacks + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2008, Intel Corp. + * 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. + */ + +#include <acpi/acpi.h> +#include <acpi/accommon.h> +#include <acpi/acparser.h> +#include <acpi/amlcode.h> +#include <acpi/acdispat.h> +#include <acpi/acinterp.h> +#include <acpi/acnamesp.h> +#include <acpi/acevents.h> + +#ifdef ACPI_ASL_COMPILER +#include <acpi/acdisasm.h> +#endif + +#define _COMPONENT ACPI_DISPATCHER +ACPI_MODULE_NAME("dswload") + +/******************************************************************************* + * + * FUNCTION: acpi_ds_init_callbacks + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * pass_number - 1, 2, or 3 + * + * RETURN: Status + * + * DESCRIPTION: Init walk state callbacks + * + ******************************************************************************/ +acpi_status +acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number) +{ + + switch (pass_number) { + case 1: + walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | + ACPI_PARSE_DELETE_TREE; + walk_state->descending_callback = acpi_ds_load1_begin_op; + walk_state->ascending_callback = acpi_ds_load1_end_op; + break; + + case 2: + walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | + ACPI_PARSE_DELETE_TREE; + walk_state->descending_callback = acpi_ds_load2_begin_op; + walk_state->ascending_callback = acpi_ds_load2_end_op; + break; + + case 3: +#ifndef ACPI_NO_METHOD_EXECUTION + walk_state->parse_flags |= ACPI_PARSE_EXECUTE | + ACPI_PARSE_DELETE_TREE; + walk_state->descending_callback = acpi_ds_exec_begin_op; + walk_state->ascending_callback = acpi_ds_exec_end_op; +#endif + break; + + default: + return (AE_BAD_PARAMETER); + } + + return (AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load1_begin_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * out_op - Where to return op if a new one is created + * + * RETURN: Status + * + * DESCRIPTION: Descending callback used during the loading of ACPI tables. + * + ******************************************************************************/ + +acpi_status +acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state, + union acpi_parse_object ** out_op) +{ + union acpi_parse_object *op; + struct acpi_namespace_node *node; + acpi_status status; + acpi_object_type object_type; + char *path; + u32 flags; + + ACPI_FUNCTION_TRACE(ds_load1_begin_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, + walk_state)); + + /* We are only interested in opcodes that have an associated name */ + + if (op) { + if (!(walk_state->op_info->flags & AML_NAMED)) { + *out_op = op; + return_ACPI_STATUS(AE_OK); + } + + /* Check if this object has already been installed in the namespace */ + + if (op->common.node) { + *out_op = op; + return_ACPI_STATUS(AE_OK); + } + } + + path = acpi_ps_get_next_namestring(&walk_state->parser_state); + + /* Map the raw opcode into an internal object type */ + + object_type = walk_state->op_info->object_type; + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "State=%p Op=%p [%s]\n", walk_state, op, + acpi_ut_get_type_name(object_type))); + + switch (walk_state->opcode) { + case AML_SCOPE_OP: + + /* + * The target name of the Scope() operator must exist at this point so + * that we can actually open the scope to enter new names underneath it. + * Allow search-to-root for single namesegs. + */ + status = + acpi_ns_lookup(walk_state->scope_info, path, object_type, + ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, + walk_state, &(node)); +#ifdef ACPI_ASL_COMPILER + if (status == AE_NOT_FOUND) { + /* + * Table disassembly: + * Target of Scope() not found. Generate an External for it, and + * insert the name into the namespace. + */ + acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0); + status = + acpi_ns_lookup(walk_state->scope_info, path, + object_type, ACPI_IMODE_LOAD_PASS1, + ACPI_NS_SEARCH_PARENT, walk_state, + &node); + } +#endif + if (ACPI_FAILURE(status)) { + ACPI_ERROR_NAMESPACE(path, status); + return_ACPI_STATUS(status); + } + + /* + * Check to make sure that the target is + * one of the opcodes that actually opens a scope + */ + switch (node->type) { + case ACPI_TYPE_ANY: + case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_POWER: + case ACPI_TYPE_PROCESSOR: + case ACPI_TYPE_THERMAL: + + /* These are acceptable types */ + break; + + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + + /* + * These types we will allow, but we will change the type. This + * enables some existing code of the form: + * + * Name (DEB, 0) + * Scope (DEB) { ... } + * + * Note: silently change the type here. On the second pass, we will report + * a warning + */ + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", + path, + acpi_ut_get_type_name(node->type))); + + node->type = ACPI_TYPE_ANY; + walk_state->scope_info->common.value = ACPI_TYPE_ANY; + break; + + default: + + /* All other types are an error */ + + ACPI_ERROR((AE_INFO, + "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)", + acpi_ut_get_type_name(node->type), path)); + + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); + } + break; + + default: + /* + * For all other named opcodes, we will enter the name into + * the namespace. + * + * Setup the search flags. + * Since we are entering a name into the namespace, we do not want to + * enable the search-to-root upsearch. + * + * There are only two conditions where it is acceptable that the name + * already exists: + * 1) the Scope() operator can reopen a scoping object that was + * previously defined (Scope, Method, Device, etc.) + * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, + * buffer_field, or Package), the name of the object is already + * in the namespace. + */ + if (walk_state->deferred_node) { + + /* This name is already in the namespace, get the node */ + + node = walk_state->deferred_node; + status = AE_OK; + break; + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (walk_state->method_node) { + node = NULL; + status = AE_OK; + break; + } + + flags = ACPI_NS_NO_UPSEARCH; + if ((walk_state->opcode != AML_SCOPE_OP) && + (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { + flags |= ACPI_NS_ERROR_IF_FOUND; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "[%s] Cannot already exist\n", + acpi_ut_get_type_name(object_type))); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "[%s] Both Find or Create allowed\n", + acpi_ut_get_type_name(object_type))); + } + + /* + * Enter the named type into the internal namespace. We enter the name + * as we go downward in the parse tree. Any necessary subobjects that + * involve arguments to the opcode must be created as we go back up the + * parse tree later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, path, object_type, + ACPI_IMODE_LOAD_PASS1, flags, walk_state, + &node); + if (ACPI_FAILURE(status)) { + if (status == AE_ALREADY_EXISTS) { + + /* The name already exists in this scope */ + + if (node->flags & ANOBJ_IS_EXTERNAL) { + /* + * Allow one create on an object or segment that was + * previously declared External + */ + node->flags &= ~ANOBJ_IS_EXTERNAL; + node->type = (u8) object_type; + + /* Just retyped a node, probably will need to open a scope */ + + if (acpi_ns_opens_scope(object_type)) { + status = + acpi_ds_scope_stack_push + (node, object_type, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS + (status); + } + } + + status = AE_OK; + } + } + + if (ACPI_FAILURE(status)) { + ACPI_ERROR_NAMESPACE(path, status); + return_ACPI_STATUS(status); + } + } + break; + } + + /* Common exit */ + + if (!op) { + + /* Create a new op */ + + op = acpi_ps_alloc_op(walk_state->opcode); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + } + + /* Initialize the op */ + +#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) + op->named.path = ACPI_CAST_PTR(u8, path); +#endif + + if (node) { + /* + * Put the Node in the "op" object that the parser uses, so we + * can get it again quickly when this scope is closed + */ + op->common.node = node; + op->named.name = node->name.integer; + } + + acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), + op); + *out_op = op; + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load1_end_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * + * RETURN: Status + * + * DESCRIPTION: Ascending callback used during the loading of the namespace, + * both control methods and everything else. + * + ******************************************************************************/ + +acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) +{ + union acpi_parse_object *op; + acpi_object_type object_type; + acpi_status status = AE_OK; + + ACPI_FUNCTION_TRACE(ds_load1_end_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, + walk_state)); + + /* We are only interested in opcodes that have an associated name */ + + if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { + return_ACPI_STATUS(AE_OK); + } + + /* Get the object type to determine if we should pop the scope */ + + object_type = walk_state->op_info->object_type; + +#ifndef ACPI_NO_METHOD_EXECUTION + if (walk_state->op_info->flags & AML_FIELD) { + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!walk_state->method_node) { + if (walk_state->opcode == AML_FIELD_OP || + walk_state->opcode == AML_BANK_FIELD_OP || + walk_state->opcode == AML_INDEX_FIELD_OP) { + status = + acpi_ds_init_field_objects(op, walk_state); + } + } + return_ACPI_STATUS(status); + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!walk_state->method_node) { + if (op->common.aml_opcode == AML_REGION_OP) { + status = + acpi_ex_create_region(op->named.data, + op->named.length, + (acpi_adr_space_type) ((op-> + common. + value. + arg)-> + common. + value. + integer), + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { + status = + acpi_ex_create_region(op->named.data, + op->named.length, + REGION_DATA_TABLE, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + } +#endif + + if (op->common.aml_opcode == AML_NAME_OP) { + + /* For Name opcode, get the object type from the argument */ + + if (op->common.value.arg) { + object_type = (acpi_ps_get_opcode_info((op->common. + value.arg)-> + common. + aml_opcode))-> + object_type; + + /* Set node type if we have a namespace node */ + + if (op->common.node) { + op->common.node->type = (u8) object_type; + } + } + } + + /* + * If we are executing a method, do not create any namespace objects + * during the load phase, only during execution. + */ + if (!walk_state->method_node) { + if (op->common.aml_opcode == AML_METHOD_OP) { + /* + * method_op pkg_length name_string method_flags term_list + * + * Note: We must create the method node/object pair as soon as we + * see the method declaration. This allows later pass1 parsing + * of invocations of the method (need to know the number of + * arguments.) + */ + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "LOADING-Method: State=%p Op=%p NamedObj=%p\n", + walk_state, op, op->named.node)); + + if (!acpi_ns_get_attached_object(op->named.node)) { + walk_state->operands[0] = + ACPI_CAST_PTR(void, op->named.node); + walk_state->num_operands = 1; + + status = + acpi_ds_create_operands(walk_state, + op->common.value. + arg); + if (ACPI_SUCCESS(status)) { + status = + acpi_ex_create_method(op->named. + data, + op->named. + length, + walk_state); + } + + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + } + } + + /* Pop the scope stack (only if loading a table) */ + + if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "(%s): Popping scope for Op %p\n", + acpi_ut_get_type_name(object_type), op)); + + status = acpi_ds_scope_stack_pop(walk_state); + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load2_begin_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * out_op - Wher to return op if a new one is created + * + * RETURN: Status + * + * DESCRIPTION: Descending callback used during the loading of ACPI tables. + * + ******************************************************************************/ + +acpi_status +acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, + union acpi_parse_object **out_op) +{ + union acpi_parse_object *op; + struct acpi_namespace_node *node; + acpi_status status; + acpi_object_type object_type; + char *buffer_ptr; + u32 flags; + + ACPI_FUNCTION_TRACE(ds_load2_begin_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, + walk_state)); + + if (op) { + if ((walk_state->control_state) && + (walk_state->control_state->common.state == + ACPI_CONTROL_CONDITIONAL_EXECUTING)) { + + /* We are executing a while loop outside of a method */ + + status = acpi_ds_exec_begin_op(walk_state, out_op); + return_ACPI_STATUS(status); + } + + /* We only care about Namespace opcodes here */ + + if ((!(walk_state->op_info->flags & AML_NSOPCODE) && + (walk_state->opcode != AML_INT_NAMEPATH_OP)) || + (!(walk_state->op_info->flags & AML_NAMED))) { +#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE + if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || + (walk_state->op_info->class == AML_CLASS_CONTROL)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Begin/EXEC: %s (fl %8.8X)\n", + walk_state->op_info->name, + walk_state->op_info->flags)); + + /* Executing a type1 or type2 opcode outside of a method */ + + status = + acpi_ds_exec_begin_op(walk_state, out_op); + return_ACPI_STATUS(status); + } +#endif + return_ACPI_STATUS(AE_OK); + } + + /* Get the name we are going to enter or lookup in the namespace */ + + if (walk_state->opcode == AML_INT_NAMEPATH_OP) { + + /* For Namepath op, get the path string */ + + buffer_ptr = op->common.value.string; + if (!buffer_ptr) { + + /* No name, just exit */ + + return_ACPI_STATUS(AE_OK); + } + } else { + /* Get name from the op */ + + buffer_ptr = ACPI_CAST_PTR(char, &op->named.name); + } + } else { + /* Get the namestring from the raw AML */ + + buffer_ptr = + acpi_ps_get_next_namestring(&walk_state->parser_state); + } + + /* Map the opcode into an internal object type */ + + object_type = walk_state->op_info->object_type; + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "State=%p Op=%p Type=%X\n", walk_state, op, + object_type)); + + switch (walk_state->opcode) { + case AML_FIELD_OP: + case AML_BANK_FIELD_OP: + case AML_INDEX_FIELD_OP: + + node = NULL; + status = AE_OK; + break; + + case AML_INT_NAMEPATH_OP: + /* + * The name_path is an object reference to an existing object. + * Don't enter the name into the namespace, but look it up + * for use later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT, walk_state, &(node)); + break; + + case AML_SCOPE_OP: + /* + * The Path is an object reference to an existing object. + * Don't enter the name into the namespace, but look it up + * for use later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT, walk_state, &(node)); + if (ACPI_FAILURE(status)) { +#ifdef ACPI_ASL_COMPILER + if (status == AE_NOT_FOUND) { + status = AE_OK; + } else { + ACPI_ERROR_NAMESPACE(buffer_ptr, status); + } +#else + ACPI_ERROR_NAMESPACE(buffer_ptr, status); +#endif + return_ACPI_STATUS(status); + } + + /* + * We must check to make sure that the target is + * one of the opcodes that actually opens a scope + */ + switch (node->type) { + case ACPI_TYPE_ANY: + case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ + case ACPI_TYPE_DEVICE: + case ACPI_TYPE_POWER: + case ACPI_TYPE_PROCESSOR: + case ACPI_TYPE_THERMAL: + + /* These are acceptable types */ + break; + + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + + /* + * These types we will allow, but we will change the type. This + * enables some existing code of the form: + * + * Name (DEB, 0) + * Scope (DEB) { ... } + */ + ACPI_WARNING((AE_INFO, + "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", + buffer_ptr, + acpi_ut_get_type_name(node->type))); + + node->type = ACPI_TYPE_ANY; + walk_state->scope_info->common.value = ACPI_TYPE_ANY; + break; + + default: + + /* All other types are an error */ + + ACPI_ERROR((AE_INFO, + "Invalid type (%s) for target of Scope operator [%4.4s]", + acpi_ut_get_type_name(node->type), + buffer_ptr)); + + return (AE_AML_OPERAND_TYPE); + } + break; + + default: + + /* All other opcodes */ + + if (op && op->common.node) { + + /* This op/node was previously entered into the namespace */ + + node = op->common.node; + + if (acpi_ns_opens_scope(object_type)) { + status = + acpi_ds_scope_stack_push(node, object_type, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + return_ACPI_STATUS(AE_OK); + } + + /* + * Enter the named type into the internal namespace. We enter the name + * as we go downward in the parse tree. Any necessary subobjects that + * involve arguments to the opcode must be created as we go back up the + * parse tree later. + * + * Note: Name may already exist if we are executing a deferred opcode. + */ + if (walk_state->deferred_node) { + + /* This name is already in the namespace, get the node */ + + node = walk_state->deferred_node; + status = AE_OK; + break; + } + + flags = ACPI_NS_NO_UPSEARCH; + if (walk_state->pass_number == ACPI_IMODE_EXECUTE) { + + /* Execution mode, node cannot already exist, node is temporary */ + + flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY); + } + + /* Add new entry or lookup existing entry */ + + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_LOAD_PASS2, flags, + walk_state, &node); + + if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "***New Node [%4.4s] %p is temporary\n", + acpi_ut_get_node_name(node), node)); + } + break; + } + + if (ACPI_FAILURE(status)) { + ACPI_ERROR_NAMESPACE(buffer_ptr, status); + return_ACPI_STATUS(status); + } + + if (!op) { + + /* Create a new op */ + + op = acpi_ps_alloc_op(walk_state->opcode); + if (!op) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + /* Initialize the new op */ + + if (node) { + op->named.name = node->name.integer; + } + *out_op = op; + } + + /* + * Put the Node in the "op" object that the parser uses, so we + * can get it again quickly when this scope is closed + */ + op->common.node = node; + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ds_load2_end_op + * + * PARAMETERS: walk_state - Current state of the parse tree walk + * + * RETURN: Status + * + * DESCRIPTION: Ascending callback used during the loading of the namespace, + * both control methods and everything else. + * + ******************************************************************************/ + +acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) +{ + union acpi_parse_object *op; + acpi_status status = AE_OK; + acpi_object_type object_type; + struct acpi_namespace_node *node; + union acpi_parse_object *arg; + struct acpi_namespace_node *new_node; +#ifndef ACPI_NO_METHOD_EXECUTION + u32 i; + u8 region_space; +#endif + + ACPI_FUNCTION_TRACE(ds_load2_end_op); + + op = walk_state->op; + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", + walk_state->op_info->name, op, walk_state)); + + /* Check if opcode had an associated namespace object */ + + if (!(walk_state->op_info->flags & AML_NSOBJECT)) { +#ifndef ACPI_NO_METHOD_EXECUTION +#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE + /* No namespace object. Executable opcode? */ + + if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || + (walk_state->op_info->class == AML_CLASS_CONTROL)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "End/EXEC: %s (fl %8.8X)\n", + walk_state->op_info->name, + walk_state->op_info->flags)); + + /* Executing a type1 or type2 opcode outside of a method */ + + status = acpi_ds_exec_end_op(walk_state); + return_ACPI_STATUS(status); + } +#endif +#endif + return_ACPI_STATUS(AE_OK); + } + + if (op->common.aml_opcode == AML_SCOPE_OP) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Ending scope Op=%p State=%p\n", op, + walk_state)); + } + + object_type = walk_state->op_info->object_type; + + /* + * Get the Node/name from the earlier lookup + * (It was saved in the *op structure) + */ + node = op->common.node; + + /* + * Put the Node on the object stack (Contains the ACPI Name of + * this object) + */ + walk_state->operands[0] = (void *)node; + walk_state->num_operands = 1; + + /* Pop the scope stack */ + + if (acpi_ns_opens_scope(object_type) && + (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "(%s) Popping scope for Op %p\n", + acpi_ut_get_type_name(object_type), op)); + + status = acpi_ds_scope_stack_pop(walk_state); + if (ACPI_FAILURE(status)) { + goto cleanup; + } + } + + /* + * Named operations are as follows: + * + * AML_ALIAS + * AML_BANKFIELD + * AML_CREATEBITFIELD + * AML_CREATEBYTEFIELD + * AML_CREATEDWORDFIELD + * AML_CREATEFIELD + * AML_CREATEQWORDFIELD + * AML_CREATEWORDFIELD + * AML_DATA_REGION + * AML_DEVICE + * AML_EVENT + * AML_FIELD + * AML_INDEXFIELD + * AML_METHOD + * AML_METHODCALL + * AML_MUTEX + * AML_NAME + * AML_NAMEDFIELD + * AML_OPREGION + * AML_POWERRES + * AML_PROCESSOR + * AML_SCOPE + * AML_THERMALZONE + */ + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", + acpi_ps_get_opcode_name(op->common.aml_opcode), + walk_state, op, node)); + + /* Decode the opcode */ + + arg = op->common.value.arg; + + switch (walk_state->op_info->type) { +#ifndef ACPI_NO_METHOD_EXECUTION + + case AML_TYPE_CREATE_FIELD: + /* + * Create the field object, but the field buffer and index must + * be evaluated later during the execution phase + */ + status = acpi_ds_create_buffer_field(op, walk_state); + break; + + case AML_TYPE_NAMED_FIELD: + /* + * If we are executing a method, initialize the field + */ + if (walk_state->method_node) { + status = acpi_ds_init_field_objects(op, walk_state); + } + + switch (op->common.aml_opcode) { + case AML_INDEX_FIELD_OP: + + status = + acpi_ds_create_index_field(op, + (acpi_handle) arg-> + common.node, walk_state); + break; + + case AML_BANK_FIELD_OP: + + status = + acpi_ds_create_bank_field(op, arg->common.node, + walk_state); + break; + + case AML_FIELD_OP: + + status = + acpi_ds_create_field(op, arg->common.node, + walk_state); + break; + + default: + /* All NAMED_FIELD opcodes must be handled above */ + break; + } + break; + + case AML_TYPE_NAMED_SIMPLE: + + status = acpi_ds_create_operands(walk_state, arg); + if (ACPI_FAILURE(status)) { + goto cleanup; + } + + switch (op->common.aml_opcode) { + case AML_PROCESSOR_OP: + + status = acpi_ex_create_processor(walk_state); + break; + + case AML_POWER_RES_OP: + + status = acpi_ex_create_power_resource(walk_state); + break; + + case AML_MUTEX_OP: + + status = acpi_ex_create_mutex(walk_state); + break; + + case AML_EVENT_OP: + + status = acpi_ex_create_event(walk_state); + break; + + case AML_ALIAS_OP: + + status = acpi_ex_create_alias(walk_state); + break; + + default: + /* Unknown opcode */ + + status = AE_OK; + goto cleanup; + } + + /* Delete operands */ + + for (i = 1; i < walk_state->num_operands; i++) { + acpi_ut_remove_reference(walk_state->operands[i]); + walk_state->operands[i] = NULL; + } + + break; +#endif /* ACPI_NO_METHOD_EXECUTION */ + + case AML_TYPE_NAMED_COMPLEX: + + switch (op->common.aml_opcode) { +#ifndef ACPI_NO_METHOD_EXECUTION + case AML_REGION_OP: + case AML_DATA_REGION_OP: + + if (op->common.aml_opcode == AML_REGION_OP) { + region_space = (acpi_adr_space_type) + ((op->common.value.arg)->common.value. + integer); + } else { + region_space = REGION_DATA_TABLE; + } + + /* + * If we are executing a method, initialize the region + */ + if (walk_state->method_node) { + status = + acpi_ex_create_region(op->named.data, + op->named.length, + region_space, + walk_state); + if (ACPI_FAILURE(status)) { + return (status); + } + } + + /* + * The op_region is not fully parsed at this time. Only valid + * argument is the space_id. (We must save the address of the + * AML of the address and length operands) + */ + + /* + * If we have a valid region, initialize it + * Namespace is NOT locked at this point. + */ + status = + acpi_ev_initialize_region + (acpi_ns_get_attached_object(node), FALSE); + if (ACPI_FAILURE(status)) { + /* + * If AE_NOT_EXIST is returned, it is not fatal + * because many regions get created before a handler + * is installed for said region. + */ + if (AE_NOT_EXIST == status) { + status = AE_OK; + } + } + break; + + case AML_NAME_OP: + + status = acpi_ds_create_node(walk_state, node, op); + break; + + case AML_METHOD_OP: + /* + * method_op pkg_length name_string method_flags term_list + * + * Note: We must create the method node/object pair as soon as we + * see the method declaration. This allows later pass1 parsing + * of invocations of the method (need to know the number of + * arguments.) + */ + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "LOADING-Method: State=%p Op=%p NamedObj=%p\n", + walk_state, op, op->named.node)); + + if (!acpi_ns_get_attached_object(op->named.node)) { + walk_state->operands[0] = + ACPI_CAST_PTR(void, op->named.node); + walk_state->num_operands = 1; + + status = + acpi_ds_create_operands(walk_state, + op->common.value. + arg); + if (ACPI_SUCCESS(status)) { + status = + acpi_ex_create_method(op->named. + data, + op->named. + length, + walk_state); + } + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + break; + +#endif /* ACPI_NO_METHOD_EXECUTION */ + + default: + /* All NAMED_COMPLEX opcodes must be handled above */ + break; + } + break; + + case AML_CLASS_INTERNAL: + + /* case AML_INT_NAMEPATH_OP: */ + break; + + case AML_CLASS_METHOD_CALL: + + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, + "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", + walk_state, op, node)); + + /* + * Lookup the method name and save the Node + */ + status = + acpi_ns_lookup(walk_state->scope_info, + arg->common.value.string, ACPI_TYPE_ANY, + ACPI_IMODE_LOAD_PASS2, + ACPI_NS_SEARCH_PARENT | + ACPI_NS_DONT_OPEN_SCOPE, walk_state, + &(new_node)); + if (ACPI_SUCCESS(status)) { + /* + * Make sure that what we found is indeed a method + * We didn't search for a method on purpose, to see if the name + * would resolve + */ + if (new_node->type != ACPI_TYPE_METHOD) { + status = AE_AML_OPERAND_TYPE; + } + + /* We could put the returned object (Node) on the object stack for + * later, but for now, we will put it in the "op" object that the + * parser uses, so we can get it again at the end of this scope + */ + op->common.node = new_node; + } else { + ACPI_ERROR_NAMESPACE(arg->common.value.string, status); + } + break; + + default: + break; + } + + cleanup: + + /* Remove the Node pushed at the very beginning */ + + walk_state->operands[0] = NULL; + walk_state->num_operands = 0; + return_ACPI_STATUS(status); +} |
