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|
/*******************************************************************************
*
* Module Name: rsutils - Utilities for the resource manager
*
******************************************************************************/
/*
* 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/acnamesp.h>
#include <acpi/acresrc.h>
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME ("rsutils")
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_prt_method_data
*
* PARAMETERS: Handle - a handle to the containing object
* ret_buffer - a pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _PRT value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_prt_method_data (
acpi_handle handle,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("rs_get_prt_method_data");
/* Parameters guaranteed valid by caller */
/*
* Execute the method, no parameters
*/
status = acpi_ut_evaluate_object (handle, "_PRT", ACPI_BTYPE_PACKAGE, &obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Create a resource linked list from the byte stream buffer that comes
* back from the _CRS method execution.
*/
status = acpi_rs_create_pci_routing_table (obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_crs_method_data
*
* PARAMETERS: Handle - a handle to the containing object
* ret_buffer - a pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _CRS value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_crs_method_data (
acpi_handle handle,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("rs_get_crs_method_data");
/* Parameters guaranteed valid by caller */
/*
* Execute the method, no parameters
*/
status = acpi_ut_evaluate_object (handle, "_CRS", ACPI_BTYPE_BUFFER, &obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the _CRS method
* execution.
*/
status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
/* on exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_prs_method_data
*
* PARAMETERS: Handle - a handle to the containing object
* ret_buffer - a pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _PRS value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_rs_get_prs_method_data (
acpi_handle handle,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("rs_get_prs_method_data");
/* Parameters guaranteed valid by caller */
/*
* Execute the method, no parameters
*/
status = acpi_ut_evaluate_object (handle, "_PRS", ACPI_BTYPE_BUFFER, &obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the _CRS method
* execution.
*/
status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
/* on exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_method_data
*
* PARAMETERS: Handle - a handle to the containing object
* ret_buffer - a pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _CRS or _PRS value of an
* object contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_method_data (
acpi_handle handle,
char *path,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE ("rs_get_method_data");
/* Parameters guaranteed valid by caller */
/*
* Execute the method, no parameters
*/
status = acpi_ut_evaluate_object (handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the method
* execution.
*/
status = acpi_rs_create_resource_list (obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference (obj_desc);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_srs_method_data
*
* PARAMETERS: Handle - a handle to the containing object
* in_buffer - a pointer to a buffer structure of the
* parameter
*
* RETURN: Status
*
* DESCRIPTION: This function is called to set the _SRS of an object contained
* in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_set_srs_method_data (
acpi_handle handle,
struct acpi_buffer *in_buffer)
{
struct acpi_parameter_info info;
union acpi_operand_object *params[2];
acpi_status status;
struct acpi_buffer buffer;
ACPI_FUNCTION_TRACE ("rs_set_srs_method_data");
/* Parameters guaranteed valid by caller */
/*
* The in_buffer parameter will point to a linked list of
* resource parameters. It needs to be formatted into a
* byte stream to be sent in as an input parameter to _SRS
*
* Convert the linked list into a byte stream
*/
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_rs_create_byte_stream (in_buffer->pointer, &buffer);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* Init the param object
*/
params[0] = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
if (!params[0]) {
acpi_os_free (buffer.pointer);
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Set up the parameter object
*/
params[0]->buffer.length = (u32) buffer.length;
params[0]->buffer.pointer = buffer.pointer;
params[0]->common.flags = AOPOBJ_DATA_VALID;
params[1] = NULL;
info.node = handle;
info.parameters = params;
info.parameter_type = ACPI_PARAM_ARGS;
/*
* Execute the method, no return value
*/
status = acpi_ns_evaluate_relative ("_SRS", &info);
if (ACPI_SUCCESS (status)) {
/* Delete any return object (especially if implicit_return is enabled) */
if (info.return_object) {
acpi_ut_remove_reference (info.return_object);
}
}
/*
* Clean up and return the status from acpi_ns_evaluate_relative
*/
acpi_ut_remove_reference (params[0]);
return_ACPI_STATUS (status);
}
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