326 lines
11 KiB
C
326 lines
11 KiB
C
/*******************************************************************************
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*
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* Module Name: rsutils - Utilities for the resource manager
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acresrc.h>
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rsutils")
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_prt_method_data
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*
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* PARAMETERS: Handle - a handle to the containing object
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* ret_buffer - a pointer to a buffer structure for the
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* results
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the _PRT value of an object
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* contained in an object specified by the handle passed in
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*
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* If the function fails an appropriate status will be returned
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* and the contents of the callers buffer is undefined.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
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{
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union acpi_operand_object *obj_desc;
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acpi_status status;
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ACPI_FUNCTION_TRACE("rs_get_prt_method_data");
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/* Parameters guaranteed valid by caller */
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/* Execute the method, no parameters */
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status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRT,
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ACPI_BTYPE_PACKAGE, &obj_desc);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/*
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* Create a resource linked list from the byte stream buffer that comes
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* back from the _CRS method execution.
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*/
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status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer);
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/* On exit, we must delete the object returned by evaluate_object */
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acpi_ut_remove_reference(obj_desc);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_crs_method_data
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*
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* PARAMETERS: Handle - a handle to the containing object
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* ret_buffer - a pointer to a buffer structure for the
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* results
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the _CRS value of an object
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* contained in an object specified by the handle passed in
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*
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* If the function fails an appropriate status will be returned
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* and the contents of the callers buffer is undefined.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
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{
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union acpi_operand_object *obj_desc;
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acpi_status status;
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ACPI_FUNCTION_TRACE("rs_get_crs_method_data");
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/* Parameters guaranteed valid by caller */
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/* Execute the method, no parameters */
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status = acpi_ut_evaluate_object(handle, METHOD_NAME__CRS,
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ACPI_BTYPE_BUFFER, &obj_desc);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/*
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* Make the call to create a resource linked list from the
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* byte stream buffer that comes back from the _CRS method
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* execution.
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*/
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status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
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/* on exit, we must delete the object returned by evaluate_object */
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acpi_ut_remove_reference(obj_desc);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_prs_method_data
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*
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* PARAMETERS: Handle - a handle to the containing object
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* ret_buffer - a pointer to a buffer structure for the
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* results
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the _PRS value of an object
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* contained in an object specified by the handle passed in
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*
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* If the function fails an appropriate status will be returned
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* and the contents of the callers buffer is undefined.
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*
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******************************************************************************/
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#ifdef ACPI_FUTURE_USAGE
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acpi_status
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acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
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{
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union acpi_operand_object *obj_desc;
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acpi_status status;
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ACPI_FUNCTION_TRACE("rs_get_prs_method_data");
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/* Parameters guaranteed valid by caller */
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/* Execute the method, no parameters */
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status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRS,
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ACPI_BTYPE_BUFFER, &obj_desc);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/*
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* Make the call to create a resource linked list from the
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* byte stream buffer that comes back from the _CRS method
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* execution.
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*/
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status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
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/* on exit, we must delete the object returned by evaluate_object */
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acpi_ut_remove_reference(obj_desc);
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return_ACPI_STATUS(status);
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}
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#endif /* ACPI_FUTURE_USAGE */
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_method_data
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*
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* PARAMETERS: Handle - a handle to the containing object
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* Path - Path to method, relative to Handle
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* ret_buffer - a pointer to a buffer structure for the
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* results
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the _CRS or _PRS value of an
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* object contained in an object specified by the handle passed in
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*
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* If the function fails an appropriate status will be returned
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* and the contents of the callers buffer is undefined.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_get_method_data(acpi_handle handle,
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char *path, struct acpi_buffer *ret_buffer)
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{
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union acpi_operand_object *obj_desc;
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acpi_status status;
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ACPI_FUNCTION_TRACE("rs_get_method_data");
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/* Parameters guaranteed valid by caller */
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/* Execute the method, no parameters */
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status =
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acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/*
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* Make the call to create a resource linked list from the
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* byte stream buffer that comes back from the method
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* execution.
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*/
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status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
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/* On exit, we must delete the object returned by evaluate_object */
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acpi_ut_remove_reference(obj_desc);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_set_srs_method_data
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*
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* PARAMETERS: Handle - a handle to the containing object
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* in_buffer - a pointer to a buffer structure of the
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* parameter
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to set the _SRS of an object contained
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* in an object specified by the handle passed in
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*
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* If the function fails an appropriate status will be returned
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* and the contents of the callers buffer is undefined.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer)
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{
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struct acpi_parameter_info info;
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union acpi_operand_object *params[2];
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acpi_status status;
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struct acpi_buffer buffer;
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ACPI_FUNCTION_TRACE("rs_set_srs_method_data");
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/* Parameters guaranteed valid by caller */
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/*
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* The in_buffer parameter will point to a linked list of
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* resource parameters. It needs to be formatted into a
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* byte stream to be sent in as an input parameter to _SRS
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*
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* Convert the linked list into a byte stream
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*/
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buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
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status = acpi_rs_create_byte_stream(in_buffer->pointer, &buffer);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Init the param object */
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params[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
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if (!params[0]) {
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acpi_os_free(buffer.pointer);
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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/* Set up the parameter object */
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params[0]->buffer.length = (u32) buffer.length;
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params[0]->buffer.pointer = buffer.pointer;
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params[0]->common.flags = AOPOBJ_DATA_VALID;
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params[1] = NULL;
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info.node = handle;
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info.parameters = params;
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info.parameter_type = ACPI_PARAM_ARGS;
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/* Execute the method, no return value */
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status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info);
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if (ACPI_SUCCESS(status)) {
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/* Delete any return object (especially if implicit_return is enabled) */
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if (info.return_object) {
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acpi_ut_remove_reference(info.return_object);
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}
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}
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/* Clean up and return the status from acpi_ns_evaluate_relative */
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acpi_ut_remove_reference(params[0]);
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return_ACPI_STATUS(status);
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}
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