mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-07 01:26:40 +07:00
6c9deb7201
Added 2007 copyright to all module headers and signons. This affects virtually every file in the ACPICA core subsystem, iASL compiler, and the utilities. Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
732 lines
20 KiB
C
732 lines
20 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: uteval - Object evaluation
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2007, 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/acnamesp.h>
|
|
#include <acpi/acinterp.h>
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("uteval")
|
|
|
|
/* Local prototypes */
|
|
static void
|
|
acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length);
|
|
|
|
static acpi_status
|
|
acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
|
|
struct acpi_compatible_id *one_cid);
|
|
|
|
/*
|
|
* Strings supported by the _OSI predefined (internal) method.
|
|
*/
|
|
static const char *acpi_interfaces_supported[] = {
|
|
/* Operating System Vendor Strings */
|
|
|
|
"Linux",
|
|
"Windows 2000",
|
|
"Windows 2001",
|
|
"Windows 2001 SP0",
|
|
"Windows 2001 SP1",
|
|
"Windows 2001 SP2",
|
|
"Windows 2001 SP3",
|
|
"Windows 2001 SP4",
|
|
"Windows 2001.1",
|
|
"Windows 2001.1 SP1", /* Added 03/2006 */
|
|
"Windows 2006", /* Added 03/2006 */
|
|
|
|
/* Feature Group Strings */
|
|
|
|
"Extended Address Space Descriptor"
|
|
/*
|
|
* All "optional" feature group strings (features that are implemented
|
|
* by the host) should be implemented in the host version of
|
|
* acpi_os_validate_interface and should not be added here.
|
|
*/
|
|
};
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_osi_implementation
|
|
*
|
|
* PARAMETERS: walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Implementation of the _OSI predefined control method
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
|
|
{
|
|
acpi_status status;
|
|
union acpi_operand_object *string_desc;
|
|
union acpi_operand_object *return_desc;
|
|
acpi_native_uint i;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_osi_implementation);
|
|
|
|
/* Validate the string input argument */
|
|
|
|
string_desc = walk_state->arguments[0].object;
|
|
if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) {
|
|
return_ACPI_STATUS(AE_TYPE);
|
|
}
|
|
|
|
/* Create a return object */
|
|
|
|
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
|
|
if (!return_desc) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Default return value is SUPPORTED */
|
|
|
|
return_desc->integer.value = ACPI_UINT32_MAX;
|
|
walk_state->return_desc = return_desc;
|
|
|
|
/* Compare input string to static table of supported interfaces */
|
|
|
|
for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) {
|
|
if (!ACPI_STRCMP
|
|
(string_desc->string.pointer,
|
|
acpi_interfaces_supported[i])) {
|
|
|
|
/* The interface is supported */
|
|
|
|
return_ACPI_STATUS(AE_CTRL_TERMINATE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Did not match the string in the static table, call the host OSL to
|
|
* check for a match with one of the optional strings (such as
|
|
* "Module Device", "3.0 Thermal Model", etc.)
|
|
*/
|
|
status = acpi_os_validate_interface(string_desc->string.pointer);
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
/* The interface is supported */
|
|
|
|
return_ACPI_STATUS(AE_CTRL_TERMINATE);
|
|
}
|
|
|
|
/* The interface is not supported */
|
|
|
|
return_desc->integer.value = 0;
|
|
return_ACPI_STATUS(AE_CTRL_TERMINATE);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_evaluate_object
|
|
*
|
|
* PARAMETERS: prefix_node - Starting node
|
|
* Path - Path to object from starting node
|
|
* expected_return_types - Bitmap of allowed return types
|
|
* return_desc - Where a return value is stored
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Evaluates a namespace object and verifies the type of the
|
|
* return object. Common code that simplifies accessing objects
|
|
* that have required return objects of fixed types.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
|
|
char *path,
|
|
u32 expected_return_btypes,
|
|
union acpi_operand_object **return_desc)
|
|
{
|
|
struct acpi_evaluate_info *info;
|
|
acpi_status status;
|
|
u32 return_btype;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_evaluate_object);
|
|
|
|
/* Allocate the evaluation information block */
|
|
|
|
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
|
|
if (!info) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
info->prefix_node = prefix_node;
|
|
info->pathname = path;
|
|
info->parameter_type = ACPI_PARAM_ARGS;
|
|
|
|
/* Evaluate the object/method */
|
|
|
|
status = acpi_ns_evaluate(info);
|
|
if (ACPI_FAILURE(status)) {
|
|
if (status == AE_NOT_FOUND) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[%4.4s.%s] was not found\n",
|
|
acpi_ut_get_node_name(prefix_node),
|
|
path));
|
|
} else {
|
|
ACPI_ERROR_METHOD("Method execution failed",
|
|
prefix_node, path, status);
|
|
}
|
|
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Did we get a return object? */
|
|
|
|
if (!info->return_object) {
|
|
if (expected_return_btypes) {
|
|
ACPI_ERROR_METHOD("No object was returned from",
|
|
prefix_node, path, AE_NOT_EXIST);
|
|
|
|
status = AE_NOT_EXIST;
|
|
}
|
|
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Map the return object type to the bitmapped type */
|
|
|
|
switch (ACPI_GET_OBJECT_TYPE(info->return_object)) {
|
|
case ACPI_TYPE_INTEGER:
|
|
return_btype = ACPI_BTYPE_INTEGER;
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
return_btype = ACPI_BTYPE_BUFFER;
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
return_btype = ACPI_BTYPE_STRING;
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
return_btype = ACPI_BTYPE_PACKAGE;
|
|
break;
|
|
|
|
default:
|
|
return_btype = 0;
|
|
break;
|
|
}
|
|
|
|
if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) {
|
|
/*
|
|
* We received a return object, but one was not expected. This can
|
|
* happen frequently if the "implicit return" feature is enabled.
|
|
* Just delete the return object and return AE_OK.
|
|
*/
|
|
acpi_ut_remove_reference(info->return_object);
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Is the return object one of the expected types? */
|
|
|
|
if (!(expected_return_btypes & return_btype)) {
|
|
ACPI_ERROR_METHOD("Return object type is incorrect",
|
|
prefix_node, path, AE_TYPE);
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
"Type returned from %s was incorrect: %s, expected Btypes: %X",
|
|
path,
|
|
acpi_ut_get_object_type_name(info->return_object),
|
|
expected_return_btypes));
|
|
|
|
/* On error exit, we must delete the return object */
|
|
|
|
acpi_ut_remove_reference(info->return_object);
|
|
status = AE_TYPE;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Object type is OK, return it */
|
|
|
|
*return_desc = info->return_object;
|
|
|
|
cleanup:
|
|
ACPI_FREE(info);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_evaluate_numeric_object
|
|
*
|
|
* PARAMETERS: object_name - Object name to be evaluated
|
|
* device_node - Node for the device
|
|
* Address - Where the value is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Evaluates a numeric namespace object for a selected device
|
|
* and stores result in *Address.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_evaluate_numeric_object(char *object_name,
|
|
struct acpi_namespace_node *device_node,
|
|
acpi_integer * address)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_evaluate_numeric_object);
|
|
|
|
status = acpi_ut_evaluate_object(device_node, object_name,
|
|
ACPI_BTYPE_INTEGER, &obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Get the returned Integer */
|
|
|
|
*address = obj_desc->integer.value;
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_copy_id_string
|
|
*
|
|
* PARAMETERS: Destination - Where to copy the string
|
|
* Source - Source string
|
|
* max_length - Length of the destination buffer
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
|
|
* Performs removal of a leading asterisk if present -- workaround
|
|
* for a known issue on a bunch of machines.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length)
|
|
{
|
|
|
|
/*
|
|
* Workaround for ID strings that have a leading asterisk. This construct
|
|
* is not allowed by the ACPI specification (ID strings must be
|
|
* alphanumeric), but enough existing machines have this embedded in their
|
|
* ID strings that the following code is useful.
|
|
*/
|
|
if (*source == '*') {
|
|
source++;
|
|
}
|
|
|
|
/* Do the actual copy */
|
|
|
|
ACPI_STRNCPY(destination, source, max_length);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_execute_HID
|
|
*
|
|
* PARAMETERS: device_node - Node for the device
|
|
* Hid - Where the HID is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes the _HID control method that returns the hardware
|
|
* ID of the device.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
|
|
struct acpi_device_id *hid)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_execute_HID);
|
|
|
|
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
|
|
&obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
|
|
|
|
/* Convert the Numeric HID to string */
|
|
|
|
acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
|
|
hid->value);
|
|
} else {
|
|
/* Copy the String HID from the returned object */
|
|
|
|
acpi_ut_copy_id_string(hid->value, obj_desc->string.pointer,
|
|
sizeof(hid->value));
|
|
}
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_translate_one_cid
|
|
*
|
|
* PARAMETERS: obj_desc - _CID object, must be integer or string
|
|
* one_cid - Where the CID string is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Return a numeric or string _CID value as a string.
|
|
* (Compatible ID)
|
|
*
|
|
* NOTE: Assumes a maximum _CID string length of
|
|
* ACPI_MAX_CID_LENGTH.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static acpi_status
|
|
acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
|
|
struct acpi_compatible_id *one_cid)
|
|
{
|
|
|
|
switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
/* Convert the Numeric CID to string */
|
|
|
|
acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value,
|
|
one_cid->value);
|
|
return (AE_OK);
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) {
|
|
return (AE_AML_STRING_LIMIT);
|
|
}
|
|
|
|
/* Copy the String CID from the returned object */
|
|
|
|
acpi_ut_copy_id_string(one_cid->value, obj_desc->string.pointer,
|
|
ACPI_MAX_CID_LENGTH);
|
|
return (AE_OK);
|
|
|
|
default:
|
|
|
|
return (AE_TYPE);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_execute_CID
|
|
*
|
|
* PARAMETERS: device_node - Node for the device
|
|
* return_cid_list - Where the CID list is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes the _CID control method that returns one or more
|
|
* compatible hardware IDs for the device.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
|
|
struct acpi_compatible_id_list ** return_cid_list)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
u32 count;
|
|
u32 size;
|
|
struct acpi_compatible_id_list *cid_list;
|
|
acpi_native_uint i;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_execute_CID);
|
|
|
|
/* Evaluate the _CID method for this device */
|
|
|
|
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING
|
|
| ACPI_BTYPE_PACKAGE, &obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Get the number of _CIDs returned */
|
|
|
|
count = 1;
|
|
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
|
|
count = obj_desc->package.count;
|
|
}
|
|
|
|
/* Allocate a worst-case buffer for the _CIDs */
|
|
|
|
size = (((count - 1) * sizeof(struct acpi_compatible_id)) +
|
|
sizeof(struct acpi_compatible_id_list));
|
|
|
|
cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
|
|
if (!cid_list) {
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Init CID list */
|
|
|
|
cid_list->count = count;
|
|
cid_list->size = size;
|
|
|
|
/*
|
|
* A _CID can return either a single compatible ID or a package of
|
|
* compatible IDs. Each compatible ID can be one of the following:
|
|
* 1) Integer (32 bit compressed EISA ID) or
|
|
* 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss")
|
|
*/
|
|
|
|
/* The _CID object can be either a single CID or a package (list) of CIDs */
|
|
|
|
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) {
|
|
|
|
/* Translate each package element */
|
|
|
|
for (i = 0; i < count; i++) {
|
|
status =
|
|
acpi_ut_translate_one_cid(obj_desc->package.
|
|
elements[i],
|
|
&cid_list->id[i]);
|
|
if (ACPI_FAILURE(status)) {
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
/* Only one CID, translate to a string */
|
|
|
|
status = acpi_ut_translate_one_cid(obj_desc, cid_list->id);
|
|
}
|
|
|
|
/* Cleanup on error */
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_FREE(cid_list);
|
|
} else {
|
|
*return_cid_list = cid_list;
|
|
}
|
|
|
|
/* On exit, we must delete the _CID return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_execute_UID
|
|
*
|
|
* PARAMETERS: device_node - Node for the device
|
|
* Uid - Where the UID is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes the _UID control method that returns the hardware
|
|
* ID of the device.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
|
|
struct acpi_device_id *uid)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_execute_UID);
|
|
|
|
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
|
|
&obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
|
|
|
|
/* Convert the Numeric UID to string */
|
|
|
|
acpi_ex_unsigned_integer_to_string(obj_desc->integer.value,
|
|
uid->value);
|
|
} else {
|
|
/* Copy the String UID from the returned object */
|
|
|
|
acpi_ut_copy_id_string(uid->value, obj_desc->string.pointer,
|
|
sizeof(uid->value));
|
|
}
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_execute_STA
|
|
*
|
|
* PARAMETERS: device_node - Node for the device
|
|
* Flags - Where the status flags are returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes _STA for selected device and stores results in
|
|
* *Flags.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_execute_STA);
|
|
|
|
status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA,
|
|
ACPI_BTYPE_INTEGER, &obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
if (AE_NOT_FOUND == status) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"_STA on %4.4s was not found, assuming device is present\n",
|
|
acpi_ut_get_node_name(device_node)));
|
|
|
|
*flags = ACPI_UINT32_MAX;
|
|
status = AE_OK;
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Extract the status flags */
|
|
|
|
*flags = (u32) obj_desc->integer.value;
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_execute_Sxds
|
|
*
|
|
* PARAMETERS: device_node - Node for the device
|
|
* Flags - Where the status flags are returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes _STA for selected device and stores results in
|
|
* *Flags.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
acpi_status status;
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_execute_sxds);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
highest[i] = 0xFF;
|
|
status = acpi_ut_evaluate_object(device_node,
|
|
ACPI_CAST_PTR(char,
|
|
acpi_gbl_highest_dstate_names
|
|
[i]),
|
|
ACPI_BTYPE_INTEGER, &obj_desc);
|
|
if (ACPI_FAILURE(status)) {
|
|
if (status != AE_NOT_FOUND) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"%s on Device %4.4s, %s\n",
|
|
ACPI_CAST_PTR(char,
|
|
acpi_gbl_highest_dstate_names
|
|
[i]),
|
|
acpi_ut_get_node_name
|
|
(device_node),
|
|
acpi_format_exception
|
|
(status)));
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
} else {
|
|
/* Extract the Dstate value */
|
|
|
|
highest[i] = (u8) obj_desc->integer.value;
|
|
|
|
/* Delete the return object */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|