![Bob Moore](/assets/img/avatar_default.png)
All tool/utility signons. Dual-license module header. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
853 lines
24 KiB
C
853 lines
24 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: dsobject - Dispatcher object management routines
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2016, 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 "accommon.h"
|
|
#include "acparser.h"
|
|
#include "amlcode.h"
|
|
#include "acdispat.h"
|
|
#include "acnamesp.h"
|
|
#include "acinterp.h"
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
ACPI_MODULE_NAME("dsobject")
|
|
|
|
/* Local prototypes */
|
|
static acpi_status
|
|
acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
union acpi_operand_object **obj_desc_ptr);
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_build_internal_object
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
* op - Parser object to be translated
|
|
* obj_desc_ptr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Translate a parser Op object to the equivalent namespace object
|
|
* Simple objects are any objects other than a package object!
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
union acpi_operand_object **obj_desc_ptr)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
acpi_object_type type;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_build_internal_object);
|
|
|
|
*obj_desc_ptr = NULL;
|
|
if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
|
|
/*
|
|
* This is a named object reference. If this name was
|
|
* previously looked up in the namespace, it was stored in this op.
|
|
* Otherwise, go ahead and look it up now
|
|
*/
|
|
if (!op->common.node) {
|
|
status = acpi_ns_lookup(walk_state->scope_info,
|
|
op->common.value.string,
|
|
ACPI_TYPE_ANY,
|
|
ACPI_IMODE_EXECUTE,
|
|
ACPI_NS_SEARCH_PARENT |
|
|
ACPI_NS_DONT_OPEN_SCOPE, NULL,
|
|
ACPI_CAST_INDIRECT_PTR(struct
|
|
acpi_namespace_node,
|
|
&(op->
|
|
common.
|
|
node)));
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
/* Check if we are resolving a named reference within a package */
|
|
|
|
if ((status == AE_NOT_FOUND)
|
|
&& (acpi_gbl_enable_interpreter_slack)
|
|
&&
|
|
((op->common.parent->common.aml_opcode ==
|
|
AML_PACKAGE_OP)
|
|
|| (op->common.parent->common.aml_opcode ==
|
|
AML_VAR_PACKAGE_OP))) {
|
|
/*
|
|
* We didn't find the target and we are populating elements
|
|
* of a package - ignore if slack enabled. Some ASL code
|
|
* contains dangling invalid references in packages and
|
|
* expects that no exception will be issued. Leave the
|
|
* element as a null element. It cannot be used, but it
|
|
* can be overwritten by subsequent ASL code - this is
|
|
* typically the case.
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
"Ignoring unresolved reference in package [%4.4s]\n",
|
|
walk_state->
|
|
scope_info->scope.
|
|
node->name.ascii));
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
} else {
|
|
ACPI_ERROR_NAMESPACE(op->common.value.
|
|
string, status);
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* Special object resolution for elements of a package */
|
|
|
|
if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
|
|
(op->common.parent->common.aml_opcode ==
|
|
AML_VAR_PACKAGE_OP)) {
|
|
/*
|
|
* Attempt to resolve the node to a value before we insert it into
|
|
* the package. If this is a reference to a common data type,
|
|
* resolve it immediately. According to the ACPI spec, package
|
|
* elements can only be "data objects" or method references.
|
|
* Attempt to resolve to an Integer, Buffer, String or Package.
|
|
* If cannot, return the named reference (for things like Devices,
|
|
* Methods, etc.) Buffer Fields and Fields will resolve to simple
|
|
* objects (int/buf/str/pkg).
|
|
*
|
|
* NOTE: References to things like Devices, Methods, Mutexes, etc.
|
|
* will remain as named references. This behavior is not described
|
|
* in the ACPI spec, but it appears to be an oversight.
|
|
*/
|
|
obj_desc =
|
|
ACPI_CAST_PTR(union acpi_operand_object,
|
|
op->common.node);
|
|
|
|
status =
|
|
acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
|
|
(struct
|
|
acpi_namespace_node,
|
|
&obj_desc),
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* Special handling for Alias objects. We need to setup the type
|
|
* and the Op->Common.Node to point to the Alias target. Note,
|
|
* Alias has at most one level of indirection internally.
|
|
*/
|
|
type = op->common.node->type;
|
|
if (type == ACPI_TYPE_LOCAL_ALIAS) {
|
|
type = obj_desc->common.type;
|
|
op->common.node =
|
|
ACPI_CAST_PTR(struct acpi_namespace_node,
|
|
op->common.node->object);
|
|
}
|
|
|
|
switch (type) {
|
|
/*
|
|
* For these types, we need the actual node, not the subobject.
|
|
* However, the subobject did not get an extra reference count above.
|
|
*
|
|
* TBD: should ex_resolve_node_to_value be changed to fix this?
|
|
*/
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
acpi_ut_add_reference(op->common.node->object);
|
|
|
|
/*lint -fallthrough */
|
|
/*
|
|
* For these types, we need the actual node, not the subobject.
|
|
* The subobject got an extra reference count in ex_resolve_node_to_value.
|
|
*/
|
|
case ACPI_TYPE_MUTEX:
|
|
case ACPI_TYPE_METHOD:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_EVENT:
|
|
case ACPI_TYPE_REGION:
|
|
|
|
/* We will create a reference object for these types below */
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* All other types - the node was resolved to an actual
|
|
* object, we are done.
|
|
*/
|
|
goto exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Create and init a new internal ACPI object */
|
|
|
|
obj_desc = acpi_ut_create_internal_object((acpi_ps_get_opcode_info
|
|
(op->common.aml_opcode))->
|
|
object_type);
|
|
if (!obj_desc) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
status =
|
|
acpi_ds_init_object_from_op(walk_state, op, op->common.aml_opcode,
|
|
&obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
exit:
|
|
*obj_desc_ptr = obj_desc;
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_build_internal_buffer_obj
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
* op - Parser object to be translated
|
|
* buffer_length - Length of the buffer
|
|
* obj_desc_ptr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Translate a parser Op package object to the equivalent
|
|
* namespace object
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
u32 buffer_length,
|
|
union acpi_operand_object **obj_desc_ptr)
|
|
{
|
|
union acpi_parse_object *arg;
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_parse_object *byte_list;
|
|
u32 byte_list_length = 0;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_build_internal_buffer_obj);
|
|
|
|
/*
|
|
* If we are evaluating a Named buffer object "Name (xxxx, Buffer)".
|
|
* The buffer object already exists (from the NS node), otherwise it must
|
|
* be created.
|
|
*/
|
|
obj_desc = *obj_desc_ptr;
|
|
if (!obj_desc) {
|
|
|
|
/* Create a new buffer object */
|
|
|
|
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
|
|
*obj_desc_ptr = obj_desc;
|
|
if (!obj_desc) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Second arg is the buffer data (optional) byte_list can be either
|
|
* individual bytes or a string initializer. In either case, a
|
|
* byte_list appears in the AML.
|
|
*/
|
|
arg = op->common.value.arg; /* skip first arg */
|
|
|
|
byte_list = arg->named.next;
|
|
if (byte_list) {
|
|
if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Expecting bytelist, found AML opcode 0x%X in op %p",
|
|
byte_list->common.aml_opcode, byte_list));
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return (AE_TYPE);
|
|
}
|
|
|
|
byte_list_length = (u32) byte_list->common.value.integer;
|
|
}
|
|
|
|
/*
|
|
* The buffer length (number of bytes) will be the larger of:
|
|
* 1) The specified buffer length and
|
|
* 2) The length of the initializer byte list
|
|
*/
|
|
obj_desc->buffer.length = buffer_length;
|
|
if (byte_list_length > buffer_length) {
|
|
obj_desc->buffer.length = byte_list_length;
|
|
}
|
|
|
|
/* Allocate the buffer */
|
|
|
|
if (obj_desc->buffer.length == 0) {
|
|
obj_desc->buffer.pointer = NULL;
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"Buffer defined with zero length in AML, creating\n"));
|
|
} else {
|
|
obj_desc->buffer.pointer =
|
|
ACPI_ALLOCATE_ZEROED(obj_desc->buffer.length);
|
|
if (!obj_desc->buffer.pointer) {
|
|
acpi_ut_delete_object_desc(obj_desc);
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Initialize buffer from the byte_list (if present) */
|
|
|
|
if (byte_list) {
|
|
memcpy(obj_desc->buffer.pointer, byte_list->named.data,
|
|
byte_list_length);
|
|
}
|
|
}
|
|
|
|
obj_desc->buffer.flags |= AOPOBJ_DATA_VALID;
|
|
op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_build_internal_package_obj
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
* op - Parser object to be translated
|
|
* element_count - Number of elements in the package - this is
|
|
* the num_elements argument to Package()
|
|
* obj_desc_ptr - Where the ACPI internal object is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Translate a parser Op package object to the equivalent
|
|
* namespace object
|
|
*
|
|
* NOTE: The number of elements in the package will be always be the num_elements
|
|
* count, regardless of the number of elements in the package list. If
|
|
* num_elements is smaller, only that many package list elements are used.
|
|
* if num_elements is larger, the Package object is padded out with
|
|
* objects of type Uninitialized (as per ACPI spec.)
|
|
*
|
|
* Even though the ASL compilers do not allow num_elements to be smaller
|
|
* than the Package list length (for the fixed length package opcode), some
|
|
* BIOS code modifies the AML on the fly to adjust the num_elements, and
|
|
* this code compensates for that. This also provides compatibility with
|
|
* other AML interpreters.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
u32 element_count,
|
|
union acpi_operand_object **obj_desc_ptr)
|
|
{
|
|
union acpi_parse_object *arg;
|
|
union acpi_parse_object *parent;
|
|
union acpi_operand_object *obj_desc = NULL;
|
|
acpi_status status = AE_OK;
|
|
u32 i;
|
|
u16 index;
|
|
u16 reference_count;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
|
|
|
|
/* Find the parent of a possibly nested package */
|
|
|
|
parent = op->common.parent;
|
|
while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
|
|
(parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) {
|
|
parent = parent->common.parent;
|
|
}
|
|
|
|
/*
|
|
* If we are evaluating a Named package object "Name (xxxx, Package)",
|
|
* the package object already exists, otherwise it must be created.
|
|
*/
|
|
obj_desc = *obj_desc_ptr;
|
|
if (!obj_desc) {
|
|
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
|
|
*obj_desc_ptr = obj_desc;
|
|
if (!obj_desc) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
obj_desc->package.node = parent->common.node;
|
|
}
|
|
|
|
/*
|
|
* Allocate the element array (array of pointers to the individual
|
|
* objects) based on the num_elements parameter. Add an extra pointer slot
|
|
* so that the list is always null terminated.
|
|
*/
|
|
obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
|
|
element_count +
|
|
1) * sizeof(void *));
|
|
|
|
if (!obj_desc->package.elements) {
|
|
acpi_ut_delete_object_desc(obj_desc);
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
obj_desc->package.count = element_count;
|
|
|
|
/*
|
|
* Initialize the elements of the package, up to the num_elements count.
|
|
* Package is automatically padded with uninitialized (NULL) elements
|
|
* if num_elements is greater than the package list length. Likewise,
|
|
* Package is truncated if num_elements is less than the list length.
|
|
*/
|
|
arg = op->common.value.arg;
|
|
arg = arg->common.next;
|
|
for (i = 0; arg && (i < element_count); i++) {
|
|
if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
|
|
if (arg->common.node->type == ACPI_TYPE_METHOD) {
|
|
/*
|
|
* A method reference "looks" to the parser to be a method
|
|
* invocation, so we special case it here
|
|
*/
|
|
arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
|
|
status =
|
|
acpi_ds_build_internal_object(walk_state,
|
|
arg,
|
|
&obj_desc->
|
|
package.
|
|
elements[i]);
|
|
} else {
|
|
/* This package element is already built, just get it */
|
|
|
|
obj_desc->package.elements[i] =
|
|
ACPI_CAST_PTR(union acpi_operand_object,
|
|
arg->common.node);
|
|
}
|
|
} else {
|
|
status =
|
|
acpi_ds_build_internal_object(walk_state, arg,
|
|
&obj_desc->package.
|
|
elements[i]);
|
|
}
|
|
|
|
if (*obj_desc_ptr) {
|
|
|
|
/* Existing package, get existing reference count */
|
|
|
|
reference_count =
|
|
(*obj_desc_ptr)->common.reference_count;
|
|
if (reference_count > 1) {
|
|
|
|
/* Make new element ref count match original ref count */
|
|
|
|
for (index = 0; index < (reference_count - 1);
|
|
index++) {
|
|
acpi_ut_add_reference((obj_desc->
|
|
package.
|
|
elements[i]));
|
|
}
|
|
}
|
|
}
|
|
|
|
arg = arg->common.next;
|
|
}
|
|
|
|
/* Check for match between num_elements and actual length of package_list */
|
|
|
|
if (arg) {
|
|
/*
|
|
* num_elements was exhausted, but there are remaining elements in the
|
|
* package_list. Truncate the package to num_elements.
|
|
*
|
|
* Note: technically, this is an error, from ACPI spec: "It is an error
|
|
* for NumElements to be less than the number of elements in the
|
|
* PackageList". However, we just print a message and
|
|
* no exception is returned. This provides Windows compatibility. Some
|
|
* BIOSs will alter the num_elements on the fly, creating this type
|
|
* of ill-formed package object.
|
|
*/
|
|
while (arg) {
|
|
/*
|
|
* We must delete any package elements that were created earlier
|
|
* and are not going to be used because of the package truncation.
|
|
*/
|
|
if (arg->common.node) {
|
|
acpi_ut_remove_reference(ACPI_CAST_PTR
|
|
(union
|
|
acpi_operand_object,
|
|
arg->common.node));
|
|
arg->common.node = NULL;
|
|
}
|
|
|
|
/* Find out how many elements there really are */
|
|
|
|
i++;
|
|
arg = arg->common.next;
|
|
}
|
|
|
|
ACPI_INFO((AE_INFO,
|
|
"Actual Package length (%u) is larger than "
|
|
"NumElements field (%u), truncated",
|
|
i, element_count));
|
|
} else if (i < element_count) {
|
|
/*
|
|
* Arg list (elements) was exhausted, but we did not reach num_elements count.
|
|
* Note: this is not an error, the package is padded out with NULLs.
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
"Package List length (%u) smaller than NumElements "
|
|
"count (%u), padded with null elements\n",
|
|
i, element_count));
|
|
}
|
|
|
|
obj_desc->package.flags |= AOPOBJ_DATA_VALID;
|
|
op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_create_node
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
* node - NS Node to be initialized
|
|
* op - Parser object to be translated
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create the object to be associated with a namespace node
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_create_node(struct acpi_walk_state *walk_state,
|
|
struct acpi_namespace_node *node,
|
|
union acpi_parse_object *op)
|
|
{
|
|
acpi_status status;
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_create_node, op);
|
|
|
|
/*
|
|
* Because of the execution pass through the non-control-method
|
|
* parts of the table, we can arrive here twice. Only init
|
|
* the named object node the first time through
|
|
*/
|
|
if (acpi_ns_get_attached_object(node)) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
if (!op->common.value.arg) {
|
|
|
|
/* No arguments, there is nothing to do */
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Build an internal object for the argument(s) */
|
|
|
|
status =
|
|
acpi_ds_build_internal_object(walk_state, op->common.value.arg,
|
|
&obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Re-type the object according to its argument */
|
|
|
|
node->type = obj_desc->common.type;
|
|
|
|
/* Attach obj to node */
|
|
|
|
status = acpi_ns_attach_object(node, obj_desc, node->type);
|
|
|
|
/* Remove local reference to the object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
#endif /* ACPI_NO_METHOD_EXECUTION */
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_init_object_from_op
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
* op - Parser op used to init the internal object
|
|
* opcode - AML opcode associated with the object
|
|
* ret_obj_desc - Namespace object to be initialized
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initialize a namespace object from a parser Op and its
|
|
* associated arguments. The namespace object is a more compact
|
|
* representation of the Op and its arguments.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
u16 opcode,
|
|
union acpi_operand_object **ret_obj_desc)
|
|
{
|
|
const struct acpi_opcode_info *op_info;
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_init_object_from_op);
|
|
|
|
obj_desc = *ret_obj_desc;
|
|
op_info = acpi_ps_get_opcode_info(opcode);
|
|
if (op_info->class == AML_CLASS_UNKNOWN) {
|
|
|
|
/* Unknown opcode */
|
|
|
|
return_ACPI_STATUS(AE_TYPE);
|
|
}
|
|
|
|
/* Perform per-object initialization */
|
|
|
|
switch (obj_desc->common.type) {
|
|
case ACPI_TYPE_BUFFER:
|
|
/*
|
|
* Defer evaluation of Buffer term_arg operand
|
|
*/
|
|
obj_desc->buffer.node =
|
|
ACPI_CAST_PTR(struct acpi_namespace_node,
|
|
walk_state->operands[0]);
|
|
obj_desc->buffer.aml_start = op->named.data;
|
|
obj_desc->buffer.aml_length = op->named.length;
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
/*
|
|
* Defer evaluation of Package term_arg operand
|
|
*/
|
|
obj_desc->package.node =
|
|
ACPI_CAST_PTR(struct acpi_namespace_node,
|
|
walk_state->operands[0]);
|
|
obj_desc->package.aml_start = op->named.data;
|
|
obj_desc->package.aml_length = op->named.length;
|
|
break;
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
switch (op_info->type) {
|
|
case AML_TYPE_CONSTANT:
|
|
/*
|
|
* Resolve AML Constants here - AND ONLY HERE!
|
|
* All constants are integers.
|
|
* We mark the integer with a flag that indicates that it started
|
|
* life as a constant -- so that stores to constants will perform
|
|
* as expected (noop). zero_op is used as a placeholder for optional
|
|
* target operands.
|
|
*/
|
|
obj_desc->common.flags = AOPOBJ_AML_CONSTANT;
|
|
|
|
switch (opcode) {
|
|
case AML_ZERO_OP:
|
|
|
|
obj_desc->integer.value = 0;
|
|
break;
|
|
|
|
case AML_ONE_OP:
|
|
|
|
obj_desc->integer.value = 1;
|
|
break;
|
|
|
|
case AML_ONES_OP:
|
|
|
|
obj_desc->integer.value = ACPI_UINT64_MAX;
|
|
|
|
/* Truncate value if we are executing from a 32-bit ACPI table */
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
(void)acpi_ex_truncate_for32bit_table(obj_desc);
|
|
#endif
|
|
break;
|
|
|
|
case AML_REVISION_OP:
|
|
|
|
obj_desc->integer.value = ACPI_CA_VERSION;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
"Unknown constant opcode 0x%X",
|
|
opcode));
|
|
status = AE_AML_OPERAND_TYPE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case AML_TYPE_LITERAL:
|
|
|
|
obj_desc->integer.value = op->common.value.integer;
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
if (acpi_ex_truncate_for32bit_table(obj_desc)) {
|
|
|
|
/* Warn if we found a 64-bit constant in a 32-bit table */
|
|
|
|
ACPI_WARNING((AE_INFO,
|
|
"Truncated 64-bit constant found in 32-bit table: %8.8X%8.8X => %8.8X",
|
|
ACPI_FORMAT_UINT64(op->common.
|
|
value.integer),
|
|
(u32)obj_desc->integer.value));
|
|
}
|
|
#endif
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR((AE_INFO, "Unknown Integer type 0x%X",
|
|
op_info->type));
|
|
status = AE_AML_OPERAND_TYPE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
obj_desc->string.pointer = op->common.value.string;
|
|
obj_desc->string.length = (u32)strlen(op->common.value.string);
|
|
|
|
/*
|
|
* The string is contained in the ACPI table, don't ever try
|
|
* to delete it
|
|
*/
|
|
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
|
|
break;
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
|
|
switch (op_info->type) {
|
|
case AML_TYPE_LOCAL_VARIABLE:
|
|
|
|
/* Local ID (0-7) is (AML opcode - base AML_LOCAL_OP) */
|
|
|
|
obj_desc->reference.value =
|
|
((u32)opcode) - AML_LOCAL_OP;
|
|
obj_desc->reference.class = ACPI_REFCLASS_LOCAL;
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
status =
|
|
acpi_ds_method_data_get_node(ACPI_REFCLASS_LOCAL,
|
|
obj_desc->reference.
|
|
value, walk_state,
|
|
ACPI_CAST_INDIRECT_PTR
|
|
(struct
|
|
acpi_namespace_node,
|
|
&obj_desc->reference.
|
|
object));
|
|
#endif
|
|
break;
|
|
|
|
case AML_TYPE_METHOD_ARGUMENT:
|
|
|
|
/* Arg ID (0-6) is (AML opcode - base AML_ARG_OP) */
|
|
|
|
obj_desc->reference.value = ((u32)opcode) - AML_ARG_OP;
|
|
obj_desc->reference.class = ACPI_REFCLASS_ARG;
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
status = acpi_ds_method_data_get_node(ACPI_REFCLASS_ARG,
|
|
obj_desc->
|
|
reference.value,
|
|
walk_state,
|
|
ACPI_CAST_INDIRECT_PTR
|
|
(struct
|
|
acpi_namespace_node,
|
|
&obj_desc->
|
|
reference.
|
|
object));
|
|
#endif
|
|
break;
|
|
|
|
default: /* Object name or Debug object */
|
|
|
|
switch (op->common.aml_opcode) {
|
|
case AML_INT_NAMEPATH_OP:
|
|
|
|
/* Node was saved in Op */
|
|
|
|
obj_desc->reference.node = op->common.node;
|
|
obj_desc->reference.object =
|
|
op->common.node->object;
|
|
obj_desc->reference.class = ACPI_REFCLASS_NAME;
|
|
break;
|
|
|
|
case AML_DEBUG_OP:
|
|
|
|
obj_desc->reference.class = ACPI_REFCLASS_DEBUG;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
"Unimplemented reference type for AML opcode: 0x%4.4X",
|
|
opcode));
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR((AE_INFO, "Unimplemented data type: 0x%X",
|
|
obj_desc->common.type));
|
|
|
|
status = AE_AML_OPERAND_TYPE;
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|