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/*******************************************************************************
*
* Module Name: rsxface - Public interfaces to the resource manager
* $Revision: 15 $
*
******************************************************************************/
/*
* Copyright (C) 2000, 2001 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
MODULE_NAME ("rsxface")
/*******************************************************************************
*
* FUNCTION: Acpi_get_irq_routing_table
*
* PARAMETERS: Device_handle - a handle to the Bus device we are querying
* Ret_buffer - a pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the IRQ routing table for a
* specific bus. The caller must first acquire a handle for the
* desired bus. The routine table is placed in the buffer pointed
* to by the Ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
* and the value of Ret_buffer is undefined.
*
* This function attempts to execute the _PRT method contained in
* the object indicated by the passed Device_handle.
*
******************************************************************************/
acpi_status
acpi_get_irq_routing_table (
acpi_handle device_handle,
acpi_buffer *ret_buffer)
{
acpi_status status;
FUNCTION_TRACE ("Acpi_get_irq_routing_table ");
/*
* Must have a valid handle and buffer, So we have to have a handle
* and a return buffer structure, and if there is a non-zero buffer length
* we also need a valid pointer in the buffer. If it's a zero buffer length,
* we'll be returning the needed buffer size, so keep going.
*/
if ((!device_handle) ||
(!ret_buffer) ||
((!ret_buffer->pointer) && (ret_buffer->length))) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
status = acpi_rs_get_prt_method_data (device_handle, ret_buffer);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_get_current_resources
*
* PARAMETERS: Device_handle - a handle to the device object for the
* device we are querying
* Ret_buffer - a pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the current resources for a
* specific device. The caller must first acquire a handle for
* the desired device. The resource data is placed in the buffer
* pointed to by the Ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
* and the value of Ret_buffer is undefined.
*
* This function attempts to execute the _CRS method contained in
* the object indicated by the passed Device_handle.
*
******************************************************************************/
acpi_status
acpi_get_current_resources (
acpi_handle device_handle,
acpi_buffer *ret_buffer)
{
acpi_status status;
FUNCTION_TRACE ("Acpi_get_current_resources");
/*
* Must have a valid handle and buffer, So we have to have a handle
* and a return buffer structure, and if there is a non-zero buffer length
* we also need a valid pointer in the buffer. If it's a zero buffer length,
* we'll be returning the needed buffer size, so keep going.
*/
if ((!device_handle) ||
(!ret_buffer) ||
((ret_buffer->length) && (!ret_buffer->pointer))) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
status = acpi_rs_get_crs_method_data (device_handle, ret_buffer);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_get_possible_resources
*
* PARAMETERS: Device_handle - a handle to the device object for the
* device we are querying
* Ret_buffer - a pointer to a buffer to receive the
* resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get a list of the possible resources
* for a specific device. The caller must first acquire a handle
* for the desired device. The resource data is placed in the
* buffer pointed to by the Ret_buffer variable.
*
* If the function fails an appropriate status will be returned
* and the value of Ret_buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_get_possible_resources (
acpi_handle device_handle,
acpi_buffer *ret_buffer)
{
acpi_status status;
FUNCTION_TRACE ("Acpi_get_possible_resources");
/*
* Must have a valid handle and buffer, So we have to have a handle
* and a return buffer structure, and if there is a non-zero buffer length
* we also need a valid pointer in the buffer. If it's a zero buffer length,
* we'll be returning the needed buffer size, so keep going.
*/
if ((!device_handle) ||
(!ret_buffer) ||
((ret_buffer->length) && (!ret_buffer->pointer))) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
status = acpi_rs_get_prs_method_data (device_handle, ret_buffer);
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_set_current_resources
*
* PARAMETERS: Device_handle - a handle to the device object for the
* device we are changing the resources of
* In_buffer - a pointer to a buffer containing the
* resources to be set for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to set the current resources for a
* specific device. The caller must first acquire a handle for
* the desired device. The resource data is passed to the routine
* the buffer pointed to by the In_buffer variable.
*
******************************************************************************/
acpi_status
acpi_set_current_resources (
acpi_handle device_handle,
acpi_buffer *in_buffer)
{
acpi_status status;
FUNCTION_TRACE ("Acpi_set_current_resources");
/*
* Must have a valid handle and buffer
*/
if ((!device_handle) ||
(!in_buffer) ||
(!in_buffer->pointer) ||
(!in_buffer->length)) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
status = acpi_rs_set_srs_method_data (device_handle, in_buffer);
return_ACPI_STATUS (status);
}
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