forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
537 lines
16 KiB
C
537 lines
16 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exstore - AML Interpreter object store support
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* 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/acdispat.h>
|
|
#include <acpi/acinterp.h>
|
|
#include <acpi/amlcode.h>
|
|
#include <acpi/acnamesp.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exstore")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_store
|
|
*
|
|
* PARAMETERS: *source_desc - Value to be stored
|
|
* *dest_desc - Where to store it. Must be an NS node
|
|
* or an union acpi_operand_object of type
|
|
* Reference;
|
|
* walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Store the value described by source_desc into the location
|
|
* described by dest_desc. Called by various interpreter
|
|
* functions to store the result of an operation into
|
|
* the destination operand -- not just simply the actual "Store"
|
|
* ASL operator.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_store (
|
|
union acpi_operand_object *source_desc,
|
|
union acpi_operand_object *dest_desc,
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_operand_object *ref_desc = dest_desc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("ex_store", dest_desc);
|
|
|
|
|
|
/* Validate parameters */
|
|
|
|
if (!source_desc || !dest_desc) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null parameter\n"));
|
|
return_ACPI_STATUS (AE_AML_NO_OPERAND);
|
|
}
|
|
|
|
/* dest_desc can be either a namespace node or an ACPI object */
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (dest_desc) == ACPI_DESC_TYPE_NAMED) {
|
|
/*
|
|
* Dest is a namespace node,
|
|
* Storing an object into a Named node.
|
|
*/
|
|
status = acpi_ex_store_object_to_node (source_desc,
|
|
(struct acpi_namespace_node *) dest_desc, walk_state,
|
|
ACPI_IMPLICIT_CONVERSION);
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
/* Destination object must be a Reference or a Constant object */
|
|
|
|
switch (ACPI_GET_OBJECT_TYPE (dest_desc)) {
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
break;
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
/* Allow stores to Constants -- a Noop as per ACPI spec */
|
|
|
|
if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*lint -fallthrough */
|
|
|
|
default:
|
|
|
|
/* Destination is not a Reference object */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Target is not a Reference or Constant object - %s [%p]\n",
|
|
acpi_ut_get_object_type_name (dest_desc), dest_desc));
|
|
|
|
ACPI_DUMP_STACK_ENTRY (source_desc);
|
|
ACPI_DUMP_STACK_ENTRY (dest_desc);
|
|
ACPI_DUMP_OPERANDS (&dest_desc, ACPI_IMODE_EXECUTE, "ex_store",
|
|
2, "Target is not a Reference or Constant object");
|
|
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Examine the Reference opcode. These cases are handled:
|
|
*
|
|
* 1) Store to Name (Change the object associated with a name)
|
|
* 2) Store to an indexed area of a Buffer or Package
|
|
* 3) Store to a Method Local or Arg
|
|
* 4) Store to the debug object
|
|
*/
|
|
switch (ref_desc->reference.opcode) {
|
|
case AML_NAME_OP:
|
|
case AML_REF_OF_OP:
|
|
|
|
/* Storing an object into a Name "container" */
|
|
|
|
status = acpi_ex_store_object_to_node (source_desc, ref_desc->reference.object,
|
|
walk_state, ACPI_IMPLICIT_CONVERSION);
|
|
break;
|
|
|
|
|
|
case AML_INDEX_OP:
|
|
|
|
/* Storing to an Index (pointer into a packager or buffer) */
|
|
|
|
status = acpi_ex_store_object_to_index (source_desc, ref_desc, walk_state);
|
|
break;
|
|
|
|
|
|
case AML_LOCAL_OP:
|
|
case AML_ARG_OP:
|
|
|
|
/* Store to a method local/arg */
|
|
|
|
status = acpi_ds_store_object_to_local (ref_desc->reference.opcode,
|
|
ref_desc->reference.offset, source_desc, walk_state);
|
|
break;
|
|
|
|
|
|
case AML_DEBUG_OP:
|
|
|
|
/*
|
|
* Storing to the Debug object causes the value stored to be
|
|
* displayed and otherwise has no effect -- see ACPI Specification
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"**** Write to Debug Object: Object %p %s ****:\n\n",
|
|
source_desc, acpi_ut_get_object_type_name (source_desc)));
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %s: ",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
|
|
if (!acpi_ut_valid_internal_object (source_desc)) {
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT,
|
|
"%p, Invalid Internal Object!\n", source_desc));
|
|
break;
|
|
}
|
|
|
|
switch (ACPI_GET_OBJECT_TYPE (source_desc)) {
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
if (acpi_gbl_integer_byte_width == 4) {
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
|
|
(u32) source_desc->integer.value));
|
|
}
|
|
else {
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X%8.8X\n",
|
|
ACPI_FORMAT_UINT64 (source_desc->integer.value)));
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]",
|
|
(u32) source_desc->buffer.length));
|
|
ACPI_DUMP_BUFFER (source_desc->buffer.pointer,
|
|
(source_desc->buffer.length < 32) ? source_desc->buffer.length : 32);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
|
|
source_desc->string.length, source_desc->string.pointer));
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] Elements Ptr - %p\n",
|
|
source_desc->package.count, source_desc->package.elements));
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%p\n",
|
|
source_desc));
|
|
break;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n"));
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_REPORT_ERROR (("ex_store: Unknown Reference opcode %X\n",
|
|
ref_desc->reference.opcode));
|
|
ACPI_DUMP_ENTRY (ref_desc, ACPI_LV_ERROR);
|
|
|
|
status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_store_object_to_index
|
|
*
|
|
* PARAMETERS: *source_desc - Value to be stored
|
|
* *dest_desc - Named object to receive the value
|
|
* walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Store the object to indexed Buffer or Package element
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_store_object_to_index (
|
|
union acpi_operand_object *source_desc,
|
|
union acpi_operand_object *index_desc,
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_operand_object *new_desc;
|
|
u8 value = 0;
|
|
u32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ex_store_object_to_index");
|
|
|
|
|
|
/*
|
|
* Destination must be a reference pointer, and
|
|
* must point to either a buffer or a package
|
|
*/
|
|
switch (index_desc->reference.target_type) {
|
|
case ACPI_TYPE_PACKAGE:
|
|
/*
|
|
* Storing to a package element. Copy the object and replace
|
|
* any existing object with the new object. No implicit
|
|
* conversion is performed.
|
|
*
|
|
* The object at *(index_desc->Reference.Where) is the
|
|
* element within the package that is to be modified.
|
|
* The parent package object is at index_desc->Reference.Object
|
|
*/
|
|
obj_desc = *(index_desc->reference.where);
|
|
|
|
status = acpi_ut_copy_iobject_to_iobject (source_desc, &new_desc, walk_state);
|
|
if (ACPI_FAILURE (status)) {
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
if (obj_desc) {
|
|
/* Decrement reference count by the ref count of the parent package */
|
|
|
|
for (i = 0; i < ((union acpi_operand_object *) index_desc->reference.object)->common.reference_count; i++) {
|
|
acpi_ut_remove_reference (obj_desc);
|
|
}
|
|
}
|
|
|
|
*(index_desc->reference.where) = new_desc;
|
|
|
|
/* Increment reference count by the ref count of the parent package -1 */
|
|
|
|
for (i = 1; i < ((union acpi_operand_object *) index_desc->reference.object)->common.reference_count; i++) {
|
|
acpi_ut_add_reference (new_desc);
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
/*
|
|
* Store into a Buffer or String (not actually a real buffer_field)
|
|
* at a location defined by an Index.
|
|
*
|
|
* The first 8-bit element of the source object is written to the
|
|
* 8-bit Buffer location defined by the Index destination object,
|
|
* according to the ACPI 2.0 specification.
|
|
*/
|
|
|
|
/*
|
|
* Make sure the target is a Buffer or String. An error should
|
|
* not happen here, since the reference_object was constructed
|
|
* by the INDEX_OP code.
|
|
*/
|
|
obj_desc = index_desc->reference.object;
|
|
if ((ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_BUFFER) &&
|
|
(ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_STRING)) {
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/*
|
|
* The assignment of the individual elements will be slightly
|
|
* different for each source type.
|
|
*/
|
|
switch (ACPI_GET_OBJECT_TYPE (source_desc)) {
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
/* Use the least-significant byte of the integer */
|
|
|
|
value = (u8) (source_desc->integer.value);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
case ACPI_TYPE_STRING:
|
|
|
|
/* Note: Takes advantage of common string/buffer fields */
|
|
|
|
value = source_desc->buffer.pointer[0];
|
|
break;
|
|
|
|
default:
|
|
|
|
/* All other types are invalid */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Source must be Integer/Buffer/String type, not %s\n",
|
|
acpi_ut_get_object_type_name (source_desc)));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/* Store the source value into the target buffer byte */
|
|
|
|
obj_desc->buffer.pointer[index_desc->reference.offset] = value;
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Target is not a Package or buffer_field\n"));
|
|
status = AE_AML_OPERAND_TYPE;
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_store_object_to_node
|
|
*
|
|
* PARAMETERS: source_desc - Value to be stored
|
|
* Node - Named object to receive the value
|
|
* walk_state - Current walk state
|
|
* implicit_conversion - Perform implicit conversion (yes/no)
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Store the object to the named object.
|
|
*
|
|
* The Assignment of an object to a named object is handled here
|
|
* The value passed in will replace the current value (if any)
|
|
* with the input value.
|
|
*
|
|
* When storing into an object the data is converted to the
|
|
* target object type then stored in the object. This means
|
|
* that the target object type (for an initialized target) will
|
|
* not be changed by a store operation.
|
|
*
|
|
* Assumes parameters are already validated.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_store_object_to_node (
|
|
union acpi_operand_object *source_desc,
|
|
struct acpi_namespace_node *node,
|
|
struct acpi_walk_state *walk_state,
|
|
u8 implicit_conversion)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_operand_object *target_desc;
|
|
union acpi_operand_object *new_desc;
|
|
acpi_object_type target_type;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("ex_store_object_to_node", source_desc);
|
|
|
|
|
|
/*
|
|
* Get current type of the node, and object attached to Node
|
|
*/
|
|
target_type = acpi_ns_get_type (node);
|
|
target_desc = acpi_ns_get_attached_object (node);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
|
|
source_desc, acpi_ut_get_object_type_name (source_desc),
|
|
node, acpi_ut_get_type_name (target_type)));
|
|
|
|
/*
|
|
* Resolve the source object to an actual value
|
|
* (If it is a reference object)
|
|
*/
|
|
status = acpi_ex_resolve_object (&source_desc, target_type, walk_state);
|
|
if (ACPI_FAILURE (status)) {
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
/* If no implicit conversion, drop into the default case below */
|
|
|
|
if (!implicit_conversion) {
|
|
/* Force execution of default (no implicit conversion) */
|
|
|
|
target_type = ACPI_TYPE_ANY;
|
|
}
|
|
|
|
/*
|
|
* Do the actual store operation
|
|
*/
|
|
switch (target_type) {
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
/*
|
|
* For fields, copy the source data to the target field.
|
|
*/
|
|
status = acpi_ex_write_data_to_field (source_desc, target_desc, &walk_state->result_obj);
|
|
break;
|
|
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_STRING:
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
/*
|
|
* These target types are all of type Integer/String/Buffer, and
|
|
* therefore support implicit conversion before the store.
|
|
*
|
|
* Copy and/or convert the source object to a new target object
|
|
*/
|
|
status = acpi_ex_store_object_to_object (source_desc, target_desc, &new_desc, walk_state);
|
|
if (ACPI_FAILURE (status)) {
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
if (new_desc != target_desc) {
|
|
/*
|
|
* Store the new new_desc as the new value of the Name, and set
|
|
* the Name's type to that of the value being stored in it.
|
|
* source_desc reference count is incremented by attach_object.
|
|
*
|
|
* Note: This may change the type of the node if an explicit store
|
|
* has been performed such that the node/object type has been
|
|
* changed.
|
|
*/
|
|
status = acpi_ns_attach_object (node, new_desc, new_desc->common.type);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Store %s into %s via Convert/Attach\n",
|
|
acpi_ut_get_object_type_name (source_desc),
|
|
acpi_ut_get_object_type_name (new_desc)));
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Storing %s (%p) directly into node (%p), no implicit conversion\n",
|
|
acpi_ut_get_object_type_name (source_desc), source_desc, node));
|
|
|
|
/* No conversions for all other types. Just attach the source object */
|
|
|
|
status = acpi_ns_attach_object (node, source_desc, ACPI_GET_OBJECT_TYPE (source_desc));
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
|