diff options
Diffstat (limited to 'drivers/acpi/executer/exresolv.c')
| -rw-r--r-- | drivers/acpi/executer/exresolv.c | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c deleted file mode 100644 index 7be60491115..00000000000 --- a/drivers/acpi/executer/exresolv.c +++ /dev/null @@ -1,546 +0,0 @@ - -/****************************************************************************** - * - * Module Name: exresolv - AML Interpreter object resolution - * - *****************************************************************************/ - -/* - * 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. - */ - - -#include <acpi/acpi.h> -#include <acpi/amlcode.h> -#include <acpi/acdispat.h> -#include <acpi/acinterp.h> -#include <acpi/acnamesp.h> -#include <acpi/acparser.h> - - -#define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exresolv") - - -/******************************************************************************* - * - * FUNCTION: acpi_ex_resolve_to_value - * - * PARAMETERS: **stack_ptr - Points to entry on obj_stack, which can - * be either an (union acpi_operand_object *) - * or an acpi_handle. - * walk_state - Current method state - * - * RETURN: Status - * - * DESCRIPTION: Convert Reference objects to values - * - ******************************************************************************/ - -acpi_status -acpi_ex_resolve_to_value ( - union acpi_operand_object **stack_ptr, - struct acpi_walk_state *walk_state) -{ - acpi_status status; - - - ACPI_FUNCTION_TRACE_PTR ("ex_resolve_to_value", stack_ptr); - - - if (!stack_ptr || !*stack_ptr) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - null pointer\n")); - return_ACPI_STATUS (AE_AML_NO_OPERAND); - } - - /* - * The entity pointed to by the stack_ptr can be either - * 1) A valid union acpi_operand_object, or - * 2) A struct acpi_namespace_node (named_obj) - */ - if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_OPERAND) { - status = acpi_ex_resolve_object_to_value (stack_ptr, walk_state); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - } - - /* - * Object on the stack may have changed if acpi_ex_resolve_object_to_value() - * was called (i.e., we can't use an _else_ here.) - */ - if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_NAMED) { - status = acpi_ex_resolve_node_to_value ( - ACPI_CAST_INDIRECT_PTR (struct acpi_namespace_node, stack_ptr), - walk_state); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - } - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Resolved object %p\n", *stack_ptr)); - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ex_resolve_object_to_value - * - * PARAMETERS: stack_ptr - Pointer to a stack location that contains a - * ptr to an internal object. - * walk_state - Current method state - * - * RETURN: Status - * - * DESCRIPTION: Retrieve the value from an internal object. The Reference type - * uses the associated AML opcode to determine the value. - * - ******************************************************************************/ - -acpi_status -acpi_ex_resolve_object_to_value ( - union acpi_operand_object **stack_ptr, - struct acpi_walk_state *walk_state) -{ - acpi_status status = AE_OK; - union acpi_operand_object *stack_desc; - void *temp_node; - union acpi_operand_object *obj_desc; - u16 opcode; - - - ACPI_FUNCTION_TRACE ("ex_resolve_object_to_value"); - - - stack_desc = *stack_ptr; - - /* This is an union acpi_operand_object */ - - switch (ACPI_GET_OBJECT_TYPE (stack_desc)) { - case ACPI_TYPE_LOCAL_REFERENCE: - - opcode = stack_desc->reference.opcode; - - switch (opcode) { - case AML_NAME_OP: - - /* - * Convert indirect name ptr to a direct name ptr. - * Then, acpi_ex_resolve_node_to_value can be used to get the value - */ - temp_node = stack_desc->reference.object; - - /* Delete the Reference Object */ - - acpi_ut_remove_reference (stack_desc); - - /* Put direct name pointer onto stack and exit */ - - (*stack_ptr) = temp_node; - break; - - - case AML_LOCAL_OP: - case AML_ARG_OP: - - /* - * Get the local from the method's state info - * Note: this increments the local's object reference count - */ - status = acpi_ds_method_data_get_value (opcode, - stack_desc->reference.offset, walk_state, &obj_desc); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] value_obj is %p\n", - stack_desc->reference.offset, obj_desc)); - - /* - * Now we can delete the original Reference Object and - * replace it with the resolved value - */ - acpi_ut_remove_reference (stack_desc); - *stack_ptr = obj_desc; - break; - - - case AML_INDEX_OP: - - switch (stack_desc->reference.target_type) { - case ACPI_TYPE_BUFFER_FIELD: - - /* Just return - leave the Reference on the stack */ - break; - - - case ACPI_TYPE_PACKAGE: - - obj_desc = *stack_desc->reference.where; - if (obj_desc) { - /* - * Valid obj descriptor, copy pointer to return value - * (i.e., dereference the package index) - * Delete the ref object, increment the returned object - */ - acpi_ut_remove_reference (stack_desc); - acpi_ut_add_reference (obj_desc); - *stack_ptr = obj_desc; - } - else { - /* - * A NULL object descriptor means an unitialized element of - * the package, can't dereference it - */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Attempt to deref an Index to NULL pkg element Idx=%p\n", - stack_desc)); - status = AE_AML_UNINITIALIZED_ELEMENT; - } - break; - - - default: - - /* Invalid reference object */ - - ACPI_REPORT_ERROR (( - "During resolve, Unknown target_type %X in Index/Reference obj %p\n", - stack_desc->reference.target_type, stack_desc)); - status = AE_AML_INTERNAL; - break; - } - break; - - - case AML_REF_OF_OP: - case AML_DEBUG_OP: - case AML_LOAD_OP: - - /* Just leave the object as-is */ - - break; - - - default: - - ACPI_REPORT_ERROR (("During resolve, Unknown Reference opcode %X (%s) in %p\n", - opcode, acpi_ps_get_opcode_name (opcode), stack_desc)); - status = AE_AML_INTERNAL; - break; - } - break; - - - case ACPI_TYPE_BUFFER: - - status = acpi_ds_get_buffer_arguments (stack_desc); - break; - - - case ACPI_TYPE_PACKAGE: - - status = acpi_ds_get_package_arguments (stack_desc); - break; - - - /* - * These cases may never happen here, but just in case.. - */ - case ACPI_TYPE_BUFFER_FIELD: - case ACPI_TYPE_LOCAL_REGION_FIELD: - case ACPI_TYPE_LOCAL_BANK_FIELD: - case ACPI_TYPE_LOCAL_INDEX_FIELD: - - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "field_read source_desc=%p Type=%X\n", - stack_desc, ACPI_GET_OBJECT_TYPE (stack_desc))); - - status = acpi_ex_read_data_from_field (walk_state, stack_desc, &obj_desc); - *stack_ptr = (void *) obj_desc; - break; - - default: - break; - } - - return_ACPI_STATUS (status); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ex_resolve_multiple - * - * PARAMETERS: walk_state - Current state (contains AML opcode) - * Operand - Starting point for resolution - * return_type - Where the object type is returned - * return_desc - Where the resolved object is returned - * - * RETURN: Status - * - * DESCRIPTION: Return the base object and type. Traverse a reference list if - * necessary to get to the base object. - * - ******************************************************************************/ - -acpi_status -acpi_ex_resolve_multiple ( - struct acpi_walk_state *walk_state, - union acpi_operand_object *operand, - acpi_object_type *return_type, - union acpi_operand_object **return_desc) -{ - union acpi_operand_object *obj_desc = (void *) operand; - struct acpi_namespace_node *node; - acpi_object_type type; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_ex_resolve_multiple"); - - - /* - * Operand can be either a namespace node or an operand descriptor - */ - switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) { - case ACPI_DESC_TYPE_OPERAND: - type = obj_desc->common.type; - break; - - case ACPI_DESC_TYPE_NAMED: - type = ((struct acpi_namespace_node *) obj_desc)->type; - obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc); - - /* If we had an Alias node, use the attached object for type info */ - - if (type == ACPI_TYPE_LOCAL_ALIAS) { - type = ((struct acpi_namespace_node *) obj_desc)->type; - obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc); - } - break; - - default: - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); - } - - - /* - * If type is anything other than a reference, we are done - */ - if (type != ACPI_TYPE_LOCAL_REFERENCE) { - goto exit; - } - - /* - * For reference objects created via the ref_of or Index operators, - * we need to get to the base object (as per the ACPI specification - * of the object_type and size_of operators). This means traversing - * the list of possibly many nested references. - */ - while (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) { - switch (obj_desc->reference.opcode) { - case AML_REF_OF_OP: - - /* Dereference the reference pointer */ - - node = obj_desc->reference.object; - - /* All "References" point to a NS node */ - - if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) { - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", - node, acpi_ut_get_descriptor_name (node))); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - - /* Get the attached object */ - - obj_desc = acpi_ns_get_attached_object (node); - if (!obj_desc) { - /* No object, use the NS node type */ - - type = acpi_ns_get_type (node); - goto exit; - } - - /* Check for circular references */ - - if (obj_desc == operand) { - return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE); - } - break; - - - case AML_INDEX_OP: - - /* Get the type of this reference (index into another object) */ - - type = obj_desc->reference.target_type; - if (type != ACPI_TYPE_PACKAGE) { - goto exit; - } - - /* - * The main object is a package, we want to get the type - * of the individual package element that is referenced by - * the index. - * - * This could of course in turn be another reference object. - */ - obj_desc = *(obj_desc->reference.where); - if (!obj_desc) { - /* NULL package elements are allowed */ - - type = 0; /* Uninitialized */ - goto exit; - } - break; - - - case AML_INT_NAMEPATH_OP: - - /* Dereference the reference pointer */ - - node = obj_desc->reference.node; - - /* All "References" point to a NS node */ - - if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) { - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", - node, acpi_ut_get_descriptor_name (node))); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - - /* Get the attached object */ - - obj_desc = acpi_ns_get_attached_object (node); - if (!obj_desc) { - /* No object, use the NS node type */ - - type = acpi_ns_get_type (node); - goto exit; - } - - /* Check for circular references */ - - if (obj_desc == operand) { - return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE); - } - break; - - - case AML_LOCAL_OP: - case AML_ARG_OP: - - if (return_desc) { - status = acpi_ds_method_data_get_value (obj_desc->reference.opcode, - obj_desc->reference.offset, walk_state, &obj_desc); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - acpi_ut_remove_reference (obj_desc); - } - else { - status = acpi_ds_method_data_get_node (obj_desc->reference.opcode, - obj_desc->reference.offset, walk_state, &node); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - - obj_desc = acpi_ns_get_attached_object (node); - if (!obj_desc) { - type = ACPI_TYPE_ANY; - goto exit; - } - } - break; - - - case AML_DEBUG_OP: - - /* The Debug Object is of type "debug_object" */ - - type = ACPI_TYPE_DEBUG_OBJECT; - goto exit; - - - default: - - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Unknown Reference subtype %X\n", - obj_desc->reference.opcode)); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - } - - /* - * Now we are guaranteed to have an object that has not been created - * via the ref_of or Index operators. - */ - type = ACPI_GET_OBJECT_TYPE (obj_desc); - - -exit: - /* Convert internal types to external types */ - - switch (type) { - case ACPI_TYPE_LOCAL_REGION_FIELD: - case ACPI_TYPE_LOCAL_BANK_FIELD: - case ACPI_TYPE_LOCAL_INDEX_FIELD: - - type = ACPI_TYPE_FIELD_UNIT; - break; - - case ACPI_TYPE_LOCAL_SCOPE: - - /* Per ACPI Specification, Scope is untyped */ - - type = ACPI_TYPE_ANY; - break; - - default: - /* No change to Type required */ - break; - } - - *return_type = type; - if (return_desc) { - *return_desc = obj_desc; - } - return_ACPI_STATUS (AE_OK); -} - - |