642 lines
19 KiB
C
642 lines
19 KiB
C
/*******************************************************************************
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*
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* Module Name: rsxface - Public interfaces to the resource manager
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2011, Intel Corp.
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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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#define __RSXFACE_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acresrc.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rsxface")
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/* Local macros for 16,32-bit to 64-bit conversion */
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#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field)
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#define ACPI_COPY_ADDRESS(Out, In) \
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ACPI_COPY_FIELD(Out, In, ResourceType); \
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ACPI_COPY_FIELD(Out, In, ProducerConsumer); \
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ACPI_COPY_FIELD(Out, In, Decode); \
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ACPI_COPY_FIELD(Out, In, MinAddressFixed); \
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ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \
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ACPI_COPY_FIELD(Out, In, Info); \
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ACPI_COPY_FIELD(Out, In, Granularity); \
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ACPI_COPY_FIELD(Out, In, Minimum); \
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ACPI_COPY_FIELD(Out, In, Maximum); \
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ACPI_COPY_FIELD(Out, In, TranslationOffset); \
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ACPI_COPY_FIELD(Out, In, AddressLength); \
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ACPI_COPY_FIELD(Out, In, ResourceSource);
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/* Local prototypes */
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static ACPI_STATUS
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AcpiRsMatchVendorResource (
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ACPI_RESOURCE *Resource,
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void *Context);
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static ACPI_STATUS
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AcpiRsValidateParameters (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *Buffer,
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ACPI_NAMESPACE_NODE **ReturnNode);
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsValidateParameters
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*
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* PARAMETERS: DeviceHandle - Handle to a device
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* Buffer - Pointer to a data buffer
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* ReturnNode - Pointer to where the device node is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Common parameter validation for resource interfaces
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiRsValidateParameters (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *Buffer,
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ACPI_NAMESPACE_NODE **ReturnNode)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_FUNCTION_TRACE (RsValidateParameters);
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/*
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* Must have a valid handle to an ACPI device
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*/
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if (!DeviceHandle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Node = AcpiNsValidateHandle (DeviceHandle);
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if (!Node)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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if (Node->Type != ACPI_TYPE_DEVICE)
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{
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return_ACPI_STATUS (AE_TYPE);
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}
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/*
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* Validate the user buffer object
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*
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* if there is a non-zero buffer length we also need a valid pointer in
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* the buffer. If it's a zero buffer length, we'll be returning the
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* needed buffer size (later), so keep going.
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*/
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Status = AcpiUtValidateBuffer (Buffer);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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*ReturnNode = Node;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetIrqRoutingTable
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*
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* PARAMETERS: DeviceHandle - Handle to the Bus device we are querying
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* RetBuffer - Pointer to a buffer to receive the
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* current resources for the device
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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 IRQ routing table for a
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* specific bus. The caller must first acquire a handle for the
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* desired bus. The routine table is placed in the buffer pointed
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* to by the RetBuffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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* This function attempts to execute the _PRT method contained in
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* the object indicated by the passed DeviceHandle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetIrqRoutingTable (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_FUNCTION_TRACE (AcpiGetIrqRoutingTable);
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/* Validate parameters then dispatch to internal routine */
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Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiRsGetPrtMethodData (Node, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiGetIrqRoutingTable)
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetCurrentResources
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*
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* PARAMETERS: DeviceHandle - Handle to the device object for the
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* device we are querying
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* RetBuffer - Pointer to a buffer to receive the
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* current resources for the device
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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 current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is placed in the buffer
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* pointed to by the RetBuffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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* This function attempts to execute the _CRS method contained in
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* the object indicated by the passed DeviceHandle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetCurrentResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_FUNCTION_TRACE (AcpiGetCurrentResources);
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/* Validate parameters then dispatch to internal routine */
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Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiRsGetCrsMethodData (Node, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiGetCurrentResources)
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetPossibleResources
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*
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* PARAMETERS: DeviceHandle - Handle to the device object for the
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* device we are querying
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* RetBuffer - Pointer to a buffer to receive the
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* resources for the device
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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 a list of the possible resources
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* for a specific device. The caller must first acquire a handle
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* for the desired device. The resource data is placed in the
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* buffer pointed to by the RetBuffer variable.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetPossibleResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_FUNCTION_TRACE (AcpiGetPossibleResources);
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/* Validate parameters then dispatch to internal routine */
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Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiRsGetPrsMethodData (Node, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiGetPossibleResources)
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetCurrentResources
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*
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* PARAMETERS: DeviceHandle - Handle to the device object for the
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* device we are setting resources
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* InBuffer - Pointer to a buffer containing the
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* resources to be set for the device
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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 current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is passed to the routine
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* the buffer pointed to by the InBuffer variable.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetCurrentResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *InBuffer)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_FUNCTION_TRACE (AcpiSetCurrentResources);
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/* Validate the buffer, don't allow zero length */
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if ((!InBuffer) ||
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(!InBuffer->Pointer) ||
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(!InBuffer->Length))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Validate parameters then dispatch to internal routine */
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Status = AcpiRsValidateParameters (DeviceHandle, InBuffer, &Node);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiRsSetSrsMethodData (Node, InBuffer);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiSetCurrentResources)
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/******************************************************************************
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*
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* FUNCTION: AcpiResourceToAddress64
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*
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* PARAMETERS: Resource - Pointer to a resource
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* Out - Pointer to the users's return buffer
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* (a struct acpi_resource_address64)
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*
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* RETURN: Status
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*
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* DESCRIPTION: If the resource is an address16, address32, or address64,
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* copy it to the address64 return buffer. This saves the
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* caller from having to duplicate code for different-sized
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* addresses.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiResourceToAddress64 (
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ACPI_RESOURCE *Resource,
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ACPI_RESOURCE_ADDRESS64 *Out)
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{
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ACPI_RESOURCE_ADDRESS16 *Address16;
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ACPI_RESOURCE_ADDRESS32 *Address32;
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if (!Resource || !Out)
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{
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return (AE_BAD_PARAMETER);
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}
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/* Convert 16 or 32 address descriptor to 64 */
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switch (Resource->Type)
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{
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case ACPI_RESOURCE_TYPE_ADDRESS16:
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Address16 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS16, &Resource->Data);
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ACPI_COPY_ADDRESS (Out, Address16);
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS32:
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Address32 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS32, &Resource->Data);
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ACPI_COPY_ADDRESS (Out, Address32);
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS64:
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/* Simple copy for 64 bit source */
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ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64));
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break;
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default:
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return (AE_BAD_PARAMETER);
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}
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return (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiResourceToAddress64)
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetVendorResource
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*
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* PARAMETERS: DeviceHandle - Handle for the parent device object
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* Name - Method name for the parent resource
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* (METHOD_NAME__CRS or METHOD_NAME__PRS)
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* Uuid - Pointer to the UUID to be matched.
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* includes both subtype and 16-byte UUID
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* RetBuffer - Where the vendor resource is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk a resource template for the specified evice to find a
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* vendor-defined resource that matches the supplied UUID and
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* UUID subtype. Returns a ACPI_RESOURCE of type Vendor.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetVendorResource (
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ACPI_HANDLE DeviceHandle,
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char *Name,
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ACPI_VENDOR_UUID *Uuid,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_VENDOR_WALK_INFO Info;
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ACPI_STATUS Status;
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/* Other parameters are validated by AcpiWalkResources */
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if (!Uuid || !RetBuffer)
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{
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return (AE_BAD_PARAMETER);
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}
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Info.Uuid = Uuid;
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Info.Buffer = RetBuffer;
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Info.Status = AE_NOT_EXIST;
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/* Walk the _CRS or _PRS resource list for this device */
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Status = AcpiWalkResources (DeviceHandle, Name, AcpiRsMatchVendorResource,
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&Info);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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return (Info.Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiGetVendorResource)
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsMatchVendorResource
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*
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* PARAMETERS: ACPI_WALK_RESOURCE_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiRsMatchVendorResource (
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ACPI_RESOURCE *Resource,
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void *Context)
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{
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ACPI_VENDOR_WALK_INFO *Info = Context;
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ACPI_RESOURCE_VENDOR_TYPED *Vendor;
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ACPI_BUFFER *Buffer;
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ACPI_STATUS Status;
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/* Ignore all descriptors except Vendor */
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if (Resource->Type != ACPI_RESOURCE_TYPE_VENDOR)
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{
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return (AE_OK);
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}
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Vendor = &Resource->Data.VendorTyped;
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/*
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* For a valid match, these conditions must hold:
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*
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* 1) Length of descriptor data must be at least as long as a UUID struct
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* 2) The UUID subtypes must match
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* 3) The UUID data must match
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*/
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if ((Vendor->ByteLength < (ACPI_UUID_LENGTH + 1)) ||
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(Vendor->UuidSubtype != Info->Uuid->Subtype) ||
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(ACPI_MEMCMP (Vendor->Uuid, Info->Uuid->Data, ACPI_UUID_LENGTH)))
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{
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return (AE_OK);
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}
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/* Validate/Allocate/Clear caller buffer */
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Buffer = Info->Buffer;
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Status = AcpiUtInitializeBuffer (Buffer, Resource->Length);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/* Found the correct resource, copy and return it */
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ACPI_MEMCPY (Buffer->Pointer, Resource, Resource->Length);
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Buffer->Length = Resource->Length;
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/* Found the desired descriptor, terminate resource walk */
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Info->Status = AE_OK;
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return (AE_CTRL_TERMINATE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiWalkResources
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*
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* PARAMETERS: DeviceHandle - Handle to the device object for the
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* device we are querying
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* Name - Method name of the resources we want
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* (METHOD_NAME__CRS or METHOD_NAME__PRS)
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* UserFunction - Called for each resource
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* Context - Passed to UserFunction
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieves the current or possible resource list for the
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* specified device. The UserFunction is called once for
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* each resource in the list.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiWalkResources (
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ACPI_HANDLE DeviceHandle,
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char *Name,
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ACPI_WALK_RESOURCE_CALLBACK UserFunction,
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void *Context)
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{
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ACPI_STATUS Status;
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ACPI_BUFFER Buffer;
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ACPI_RESOURCE *Resource;
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ACPI_RESOURCE *ResourceEnd;
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ACPI_FUNCTION_TRACE (AcpiWalkResources);
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/* Parameter validation */
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if (!DeviceHandle || !UserFunction || !Name ||
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(!ACPI_COMPARE_NAME (Name, METHOD_NAME__CRS) &&
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!ACPI_COMPARE_NAME (Name, METHOD_NAME__PRS)))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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|
/* Get the _CRS or _PRS resource list */
|
|
|
|
Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
|
|
Status = AcpiRsGetMethodData (DeviceHandle, Name, &Buffer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Buffer now contains the resource list */
|
|
|
|
Resource = ACPI_CAST_PTR (ACPI_RESOURCE, Buffer.Pointer);
|
|
ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Buffer.Pointer, Buffer.Length);
|
|
|
|
/* Walk the resource list until the EndTag is found (or buffer end) */
|
|
|
|
while (Resource < ResourceEnd)
|
|
{
|
|
/* Sanity check the resource */
|
|
|
|
if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
|
|
{
|
|
Status = AE_AML_INVALID_RESOURCE_TYPE;
|
|
break;
|
|
}
|
|
|
|
/* Invoke the user function, abort on any error returned */
|
|
|
|
Status = UserFunction (Resource, Context);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (Status == AE_CTRL_TERMINATE)
|
|
{
|
|
/* This is an OK termination by the user function */
|
|
|
|
Status = AE_OK;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* EndTag indicates end-of-list */
|
|
|
|
if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
|
|
{
|
|
break;
|
|
}
|
|
|
|
/* Get the next resource descriptor */
|
|
|
|
Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
|
|
}
|
|
|
|
ACPI_FREE (Buffer.Pointer);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiWalkResources)
|