276 lines
9.0 KiB
C
276 lines
9.0 KiB
C
/*******************************************************************************
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*
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* Module Name: rslist - Linked list utilities
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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 __RSLIST_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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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rslist")
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsConvertAmlToResources
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*
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* PARAMETERS: ACPI_WALK_AML_CALLBACK
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* ResourcePtr - Pointer to the buffer that will
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* contain the output structures
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an AML resource to an internal representation of the
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* resource that is aligned and easier to access.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsConvertAmlToResources (
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UINT8 *Aml,
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UINT32 Length,
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UINT32 Offset,
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UINT8 ResourceIndex,
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void *Context)
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{
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ACPI_RESOURCE **ResourcePtr = ACPI_CAST_INDIRECT_PTR (
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ACPI_RESOURCE, Context);
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ACPI_RESOURCE *Resource;
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AML_RESOURCE *AmlResource;
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ACPI_RSCONVERT_INFO *ConversionTable;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (RsConvertAmlToResources);
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/*
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* Check that the input buffer and all subsequent pointers into it
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* are aligned on a native word boundary. Most important on IA64
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*/
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Resource = *ResourcePtr;
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if (ACPI_IS_MISALIGNED (Resource))
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{
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ACPI_WARNING ((AE_INFO,
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"Misaligned resource pointer %p", Resource));
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}
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/* Get the appropriate conversion info table */
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AmlResource = ACPI_CAST_PTR (AML_RESOURCE, Aml);
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if (AcpiUtGetResourceType (Aml) == ACPI_RESOURCE_NAME_SERIAL_BUS)
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{
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if (AmlResource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE)
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{
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ConversionTable = NULL;
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}
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else
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{
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/* This is an I2C, SPI, or UART SerialBus descriptor */
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ConversionTable =
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AcpiGbl_ConvertResourceSerialBusDispatch[
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AmlResource->CommonSerialBus.Type];
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}
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}
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else
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{
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ConversionTable =
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AcpiGbl_GetResourceDispatch[ResourceIndex];
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}
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if (!ConversionTable)
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{
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ACPI_ERROR ((AE_INFO,
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"Invalid/unsupported resource descriptor: Type 0x%2.2X",
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ResourceIndex));
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return (AE_AML_INVALID_RESOURCE_TYPE);
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}
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/* Convert the AML byte stream resource to a local resource struct */
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Status = AcpiRsConvertAmlToResource (
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Resource, AmlResource, ConversionTable);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not convert AML resource (Type 0x%X)", *Aml));
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
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"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
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AcpiUtGetResourceType (Aml), Length,
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Resource->Length));
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/* Point to the next structure in the output buffer */
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*ResourcePtr = ACPI_NEXT_RESOURCE (Resource);
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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: AcpiRsConvertResourcesToAml
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*
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* PARAMETERS: Resource - Pointer to the resource linked list
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* AmlSizeNeeded - Calculated size of the byte stream
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* needed from calling AcpiRsGetAmlLength()
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* The size of the OutputBuffer is
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* guaranteed to be >= AmlSizeNeeded
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* OutputBuffer - Pointer to the buffer that will
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* contain the byte stream
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes the resource linked list and parses it, creating a
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* byte stream of resources in the caller's output buffer
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsConvertResourcesToAml (
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ACPI_RESOURCE *Resource,
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ACPI_SIZE AmlSizeNeeded,
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UINT8 *OutputBuffer)
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{
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UINT8 *Aml = OutputBuffer;
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UINT8 *EndAml = OutputBuffer + AmlSizeNeeded;
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ACPI_RSCONVERT_INFO *ConversionTable;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (RsConvertResourcesToAml);
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/* Walk the resource descriptor list, convert each descriptor */
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while (Aml < EndAml)
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{
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/* Validate the (internal) Resource Type */
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if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
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{
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ACPI_ERROR ((AE_INFO,
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"Invalid descriptor type (0x%X) in resource list",
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Resource->Type));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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/* Perform the conversion */
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if (Resource->Type == ACPI_RESOURCE_TYPE_SERIAL_BUS)
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{
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if (Resource->Data.CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE)
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{
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ConversionTable = NULL;
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}
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else
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{
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/* This is an I2C, SPI, or UART SerialBus descriptor */
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ConversionTable = AcpiGbl_ConvertResourceSerialBusDispatch[
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Resource->Data.CommonSerialBus.Type];
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}
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}
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else
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{
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ConversionTable = AcpiGbl_SetResourceDispatch[Resource->Type];
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}
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if (!ConversionTable)
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{
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ACPI_ERROR ((AE_INFO,
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"Invalid/unsupported resource descriptor: Type 0x%2.2X",
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Resource->Type));
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return (AE_AML_INVALID_RESOURCE_TYPE);
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}
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Status = AcpiRsConvertResourceToAml (Resource,
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ACPI_CAST_PTR (AML_RESOURCE, Aml),
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ConversionTable);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not convert resource (type 0x%X) to AML",
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Resource->Type));
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return_ACPI_STATUS (Status);
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}
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/* Perform final sanity check on the new AML resource descriptor */
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Status = AcpiUtValidateResource (
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ACPI_CAST_PTR (AML_RESOURCE, Aml), NULL);
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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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/* Check for end-of-list, normal exit */
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if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
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{
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/* An End Tag indicates the end of the input Resource Template */
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* Extract the total length of the new descriptor and set the
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* Aml to point to the next (output) resource descriptor
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*/
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Aml += AcpiUtGetDescriptorLength (Aml);
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/* Point to the next input resource descriptor */
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Resource = ACPI_NEXT_RESOURCE (Resource);
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}
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/* Completed buffer, but did not find an EndTag resource descriptor */
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return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
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}
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