mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Erik Schmauss](/assets/img/avatar_default.png)
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
374 lines
10 KiB
C
374 lines
10 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: dsargs - Support for execution of dynamic arguments for static
|
|
* objects (regions, fields, buffer fields, etc.)
|
|
*
|
|
* Copyright (C) 2000 - 2018, Intel Corp.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acparser.h"
|
|
#include "amlcode.h"
|
|
#include "acdispat.h"
|
|
#include "acnamesp.h"
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
ACPI_MODULE_NAME("dsargs")
|
|
|
|
/* Local prototypes */
|
|
static acpi_status
|
|
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
|
|
struct acpi_namespace_node *scope_node,
|
|
u32 aml_length, u8 *aml_start);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_execute_arguments
|
|
*
|
|
* PARAMETERS: node - Object NS node
|
|
* scope_node - Parent NS node
|
|
* aml_length - Length of executable AML
|
|
* aml_start - Pointer to the AML
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Late (deferred) execution of region or field arguments
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
|
|
struct acpi_namespace_node *scope_node,
|
|
u32 aml_length, u8 *aml_start)
|
|
{
|
|
acpi_status status;
|
|
union acpi_parse_object *op;
|
|
struct acpi_walk_state *walk_state;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_execute_arguments, aml_start);
|
|
|
|
/* Allocate a new parser op to be the root of the parsed tree */
|
|
|
|
op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
|
|
if (!op) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Save the Node for use in acpi_ps_parse_aml */
|
|
|
|
op->common.node = scope_node;
|
|
|
|
/* Create and initialize a new parser state */
|
|
|
|
walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
|
|
if (!walk_state) {
|
|
status = AE_NO_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
|
|
aml_length, NULL, ACPI_IMODE_LOAD_PASS1);
|
|
if (ACPI_FAILURE(status)) {
|
|
acpi_ds_delete_walk_state(walk_state);
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Mark this parse as a deferred opcode */
|
|
|
|
walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
|
|
walk_state->deferred_node = node;
|
|
|
|
/* Pass1: Parse the entire declaration */
|
|
|
|
status = acpi_ps_parse_aml(walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Get and init the Op created above */
|
|
|
|
op->common.node = node;
|
|
acpi_ps_delete_parse_tree(op);
|
|
|
|
/* Evaluate the deferred arguments */
|
|
|
|
op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
|
|
if (!op) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
op->common.node = scope_node;
|
|
|
|
/* Create and initialize a new parser state */
|
|
|
|
walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
|
|
if (!walk_state) {
|
|
status = AE_NO_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Execute the opcode and arguments */
|
|
|
|
status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
|
|
aml_length, NULL, ACPI_IMODE_EXECUTE);
|
|
if (ACPI_FAILURE(status)) {
|
|
acpi_ds_delete_walk_state(walk_state);
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Mark this execution as a deferred opcode */
|
|
|
|
walk_state->deferred_node = node;
|
|
status = acpi_ps_parse_aml(walk_state);
|
|
|
|
cleanup:
|
|
acpi_ps_delete_parse_tree(op);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_get_buffer_field_arguments
|
|
*
|
|
* PARAMETERS: obj_desc - A valid buffer_field object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
|
|
* evaluation of these field attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc)
|
|
{
|
|
union acpi_operand_object *extra_desc;
|
|
struct acpi_namespace_node *node;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc);
|
|
|
|
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Get the AML pointer (method object) and buffer_field node */
|
|
|
|
extra_desc = acpi_ns_get_secondary_object(obj_desc);
|
|
node = obj_desc->buffer_field.node;
|
|
|
|
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
|
|
(ACPI_TYPE_BUFFER_FIELD, node, NULL));
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
|
|
acpi_ut_get_node_name(node)));
|
|
|
|
/* Execute the AML code for the term_arg arguments */
|
|
|
|
status = acpi_ds_execute_arguments(node, node->parent,
|
|
extra_desc->extra.aml_length,
|
|
extra_desc->extra.aml_start);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_get_bank_field_arguments
|
|
*
|
|
* PARAMETERS: obj_desc - A valid bank_field object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get bank_field bank_value. This implements the late
|
|
* evaluation of these field attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
|
|
{
|
|
union acpi_operand_object *extra_desc;
|
|
struct acpi_namespace_node *node;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc);
|
|
|
|
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Get the AML pointer (method object) and bank_field node */
|
|
|
|
extra_desc = acpi_ns_get_secondary_object(obj_desc);
|
|
node = obj_desc->bank_field.node;
|
|
|
|
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
|
|
(ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL));
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
|
|
acpi_ut_get_node_name(node)));
|
|
|
|
/* Execute the AML code for the term_arg arguments */
|
|
|
|
status = acpi_ds_execute_arguments(node, node->parent,
|
|
extra_desc->extra.aml_length,
|
|
extra_desc->extra.aml_start);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_ut_add_address_range(obj_desc->region.space_id,
|
|
obj_desc->region.address,
|
|
obj_desc->region.length, node);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_get_buffer_arguments
|
|
*
|
|
* PARAMETERS: obj_desc - A valid Buffer object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get Buffer length and initializer byte list. This implements
|
|
* the late evaluation of these attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc)
|
|
{
|
|
struct acpi_namespace_node *node;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc);
|
|
|
|
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Get the Buffer node */
|
|
|
|
node = obj_desc->buffer.node;
|
|
if (!node) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"No pointer back to namespace node in buffer object %p",
|
|
obj_desc));
|
|
return_ACPI_STATUS(AE_AML_INTERNAL);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n"));
|
|
|
|
/* Execute the AML code for the term_arg arguments */
|
|
|
|
status = acpi_ds_execute_arguments(node, node,
|
|
obj_desc->buffer.aml_length,
|
|
obj_desc->buffer.aml_start);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_get_package_arguments
|
|
*
|
|
* PARAMETERS: obj_desc - A valid Package object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get Package length and initializer byte list. This implements
|
|
* the late evaluation of these attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc)
|
|
{
|
|
struct acpi_namespace_node *node;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc);
|
|
|
|
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Get the Package node */
|
|
|
|
node = obj_desc->package.node;
|
|
if (!node) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"No pointer back to namespace node in package %p",
|
|
obj_desc));
|
|
return_ACPI_STATUS(AE_AML_INTERNAL);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Argument Init, AML Ptr: %p\n",
|
|
obj_desc->package.aml_start));
|
|
|
|
/* Execute the AML code for the term_arg arguments */
|
|
|
|
status = acpi_ds_execute_arguments(node, node,
|
|
obj_desc->package.aml_length,
|
|
obj_desc->package.aml_start);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_get_region_arguments
|
|
*
|
|
* PARAMETERS: obj_desc - A valid region object
|
|
*
|
|
* RETURN: Status.
|
|
*
|
|
* DESCRIPTION: Get region address and length. This implements the late
|
|
* evaluation of these region attributes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
|
|
{
|
|
struct acpi_namespace_node *node;
|
|
acpi_status status;
|
|
union acpi_operand_object *extra_desc;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc);
|
|
|
|
if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
extra_desc = acpi_ns_get_secondary_object(obj_desc);
|
|
if (!extra_desc) {
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Get the Region node */
|
|
|
|
node = obj_desc->region.node;
|
|
|
|
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
|
|
(ACPI_TYPE_REGION, node, NULL));
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[%4.4s] OpRegion Arg Init at AML %p\n",
|
|
acpi_ut_get_node_name(node),
|
|
extra_desc->extra.aml_start));
|
|
|
|
/* Execute the argument AML */
|
|
|
|
status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node,
|
|
extra_desc->extra.aml_length,
|
|
extra_desc->extra.aml_start);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_ut_add_address_range(obj_desc->region.space_id,
|
|
obj_desc->region.address,
|
|
obj_desc->region.length, node);
|
|
return_ACPI_STATUS(status);
|
|
}
|