patch-2.4.6 linux/drivers/acpi/interpreter/amresolv.c
Next file: linux/drivers/acpi/interpreter/amresop.c
Previous file: linux/drivers/acpi/interpreter/amresnte.c
Back to the patch index
Back to the overall index
- Lines: 466
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/acpi/interpreter/amresolv.c
- Orig date:
Mon Jan 29 10:15:59 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/interpreter/amresolv.c linux/drivers/acpi/interpreter/amresolv.c
@@ -1,465 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: amresolv - AML Interpreter object resolution
- * $Revision: 81 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "acpi.h"
-#include "amlcode.h"
-#include "acparser.h"
-#include "acdispat.h"
-#include "acinterp.h"
-#include "acnamesp.h"
-#include "actables.h"
-#include "acevents.h"
-
-
-#define _COMPONENT INTERPRETER
- MODULE_NAME ("amresolv")
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_get_field_unit_value
- *
- * PARAMETERS: *Field_desc - Pointer to a Field_unit
- * *Result_desc - Pointer to an empty descriptor
- * which will become a Number
- * containing the field's value.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Retrieve the value from a Field_unit
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_get_field_unit_value (
- ACPI_OPERAND_OBJECT *field_desc,
- ACPI_OPERAND_OBJECT *result_desc)
-{
- ACPI_STATUS status = AE_OK;
- u32 mask;
- u8 *location = NULL;
- u8 locked = FALSE;
-
-
- if (!field_desc) {
- status = AE_AML_NO_OPERAND;
- }
-
- if (!(field_desc->common.flags & AOPOBJ_DATA_VALID)) {
- status = acpi_ds_get_field_unit_arguments (field_desc);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
- }
-
- if (!field_desc->field_unit.container) {
- status = AE_AML_INTERNAL;
- }
-
- else if (ACPI_TYPE_BUFFER != field_desc->field_unit.container->common.type) {
- status = AE_AML_OPERAND_TYPE;
- }
-
- else if (!result_desc) {
- status = AE_AML_INTERNAL;
- }
-
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
-
- /* Get the global lock if needed */
-
- locked = acpi_aml_acquire_global_lock (field_desc->field_unit.lock_rule);
-
- /* Field location is (base of buffer) + (byte offset) */
-
- location = field_desc->field_unit.container->buffer.pointer
- + field_desc->field_unit.offset;
-
- /*
- * Construct Mask with as many 1 bits as the field width
- *
- * NOTE: Only the bottom 5 bits are valid for a shift operation, so
- * special care must be taken for any shift greater than 31 bits.
- *
- * TBD: [Unhandled] Fields greater than 32-bits will not work.
- */
-
- if (field_desc->field_unit.length < 32) {
- mask = ((u32) 1 << field_desc->field_unit.length) - (u32) 1;
- }
- else {
- mask = ACPI_UINT32_MAX;
- }
-
- result_desc->integer.type = (u8) ACPI_TYPE_INTEGER;
-
- /* Get the 32 bit value at the location */
-
- MOVE_UNALIGNED32_TO_32 (&result_desc->integer.value, location);
-
- /*
- * Shift the 32-bit word containing the field, and mask off the
- * resulting value
- */
-
- result_desc->integer.value =
- (result_desc->integer.value >> field_desc->field_unit.bit_offset) & mask;
-
- /* Release global lock if we acquired it earlier */
-
- acpi_aml_release_global_lock (locked);
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_resolve_to_value
- *
- * PARAMETERS: **Stack_ptr - Points to entry on Obj_stack, which can
- * be either an (ACPI_OPERAND_OBJECT *)
- * or an ACPI_HANDLE.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Convert Reference objects to values
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_resolve_to_value (
- ACPI_OPERAND_OBJECT **stack_ptr,
- ACPI_WALK_STATE *walk_state)
-{
- ACPI_STATUS status = AE_OK;
-
-
- if (!stack_ptr || !*stack_ptr) {
- return (AE_AML_NO_OPERAND);
- }
-
-
- /*
- * The entity pointed to by the Stack_ptr can be either
- * 1) A valid ACPI_OPERAND_OBJECT, or
- * 2) A ACPI_NAMESPACE_NODE (Named_obj)
- */
-
- if (VALID_DESCRIPTOR_TYPE (*stack_ptr, ACPI_DESC_TYPE_INTERNAL)) {
-
- status = acpi_aml_resolve_object_to_value (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
- }
-
- /*
- * Object on the stack may have changed if Acpi_aml_resolve_object_to_value()
- * was called (i.e., we can't use an _else_ here.)
- */
-
- if (VALID_DESCRIPTOR_TYPE (*stack_ptr, ACPI_DESC_TYPE_NAMED)) {
- status = acpi_aml_resolve_node_to_value ((ACPI_NAMESPACE_NODE **) stack_ptr, walk_state);
- }
-
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_resolve_object_to_value
- *
- * PARAMETERS: Stack_ptr - Pointer to a stack location that contains a
- * ptr to an internal object.
- *
- * 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_aml_resolve_object_to_value (
- ACPI_OPERAND_OBJECT **stack_ptr,
- ACPI_WALK_STATE *walk_state)
-{
- ACPI_OPERAND_OBJECT *stack_desc;
- ACPI_STATUS status = AE_OK;
- ACPI_HANDLE temp_handle = NULL;
- ACPI_OPERAND_OBJECT *obj_desc = NULL;
- u32 index = 0;
- u16 opcode;
-
-
- stack_desc = *stack_ptr;
-
- /* This is an ACPI_OPERAND_OBJECT */
-
- switch (stack_desc->common.type)
- {
-
- case INTERNAL_TYPE_REFERENCE:
-
- opcode = stack_desc->reference.op_code;
-
- switch (opcode)
- {
-
- case AML_NAME_OP:
-
- /*
- * Convert indirect name ptr to a direct name ptr.
- * Then, Acpi_aml_resolve_node_to_value can be used to get the value
- */
-
- temp_handle = stack_desc->reference.object;
-
- /* Delete the Reference Object */
-
- acpi_cm_remove_reference (stack_desc);
-
- /* Put direct name pointer onto stack and exit */
-
- (*stack_ptr) = temp_handle;
- status = AE_OK;
- break;
-
-
- case AML_LOCAL_OP:
-
- index = stack_desc->reference.offset;
-
- /*
- * 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 (MTH_TYPE_LOCAL, index,
- walk_state, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- /*
- * Now we can delete the original Reference Object and
- * replace it with the resolve value
- */
-
- acpi_cm_remove_reference (stack_desc);
- *stack_ptr = obj_desc;
-
- if (ACPI_TYPE_INTEGER == obj_desc->common.type) {
- /* Value is a Number */
-
- }
-
- break;
-
-
- case AML_ARG_OP:
-
- index = stack_desc->reference.offset;
-
-
- /*
- * Get the argument from the method's state info
- * Note: this increments the object reference count
- */
-
- status = acpi_ds_method_data_get_value (MTH_TYPE_ARG, index,
- walk_state, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- /*
- * Now we can delete the original Reference Object and
- * replace it with the resolve value
- */
-
- acpi_cm_remove_reference (stack_desc);
- *stack_ptr = obj_desc;
-
- if (ACPI_TYPE_INTEGER == obj_desc->common.type) {
- /* Value is a Number */
-
- }
-
- break;
-
-
- /*
- * TBD: [Restructure] These next three opcodes change the type of
- * the object, which is actually a no-no.
- */
-
- case AML_ZERO_OP:
-
- stack_desc->common.type = (u8) ACPI_TYPE_INTEGER;
- stack_desc->integer.value = 0;
- break;
-
-
- case AML_ONE_OP:
-
- stack_desc->common.type = (u8) ACPI_TYPE_INTEGER;
- stack_desc->integer.value = 1;
- break;
-
-
- case AML_ONES_OP:
-
- stack_desc->common.type = (u8) ACPI_TYPE_INTEGER;
- stack_desc->integer.value = ACPI_INTEGER_MAX;
-
- /* Truncate value if we are executing from a 32-bit ACPI table */
-
- acpi_aml_truncate_for32bit_table (stack_desc, walk_state);
- 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_cm_remove_reference (stack_desc);
- acpi_cm_add_reference (obj_desc);
- *stack_ptr = obj_desc;
- }
-
- else {
- /*
- * A NULL object descriptor means an unitialized element of
- * the package, can't deref it
- */
-
- status = AE_AML_UNINITIALIZED_ELEMENT;
- }
- break;
-
- default:
- /* Invalid reference OBJ*/
-
- status = AE_AML_INTERNAL;
- break;
- }
-
- break;
-
-
- case AML_DEBUG_OP:
-
- /* Just leave the object as-is */
- break;
-
-
- default:
-
- status = AE_AML_INTERNAL;
-
- } /* switch (Opcode) */
-
-
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- break; /* case INTERNAL_TYPE_REFERENCE */
-
-
- case ACPI_TYPE_FIELD_UNIT:
-
- obj_desc = acpi_cm_create_internal_object (ACPI_TYPE_ANY);
- if (!obj_desc) {
- /* Descriptor allocation failure */
-
- return (AE_NO_MEMORY);
- }
-
- status = acpi_aml_get_field_unit_value (stack_desc, obj_desc);
- if (ACPI_FAILURE (status)) {
- acpi_cm_remove_reference (obj_desc);
- obj_desc = NULL;
- }
-
- *stack_ptr = (void *) obj_desc;
- break;
-
-
- case INTERNAL_TYPE_BANK_FIELD:
-
- obj_desc = acpi_cm_create_internal_object (ACPI_TYPE_ANY);
- if (!obj_desc) {
- /* Descriptor allocation failure */
-
- return (AE_NO_MEMORY);
- }
-
- status = acpi_aml_get_field_unit_value (stack_desc, obj_desc);
- if (ACPI_FAILURE (status)) {
- acpi_cm_remove_reference (obj_desc);
- obj_desc = NULL;
- }
-
- *stack_ptr = (void *) obj_desc;
- break;
-
-
- /* TBD: [Future] - may need to handle Index_field, and Def_field someday */
-
- default:
-
- break;
-
- } /* switch (Stack_desc->Common.Type) */
-
-
- return (status);
-}
-
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)