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0897831bb5
Implemented support for the EM64T and other x86_64 processors. This essentially entails recognizing that these processors support non-aligned memory transfers. Previously, all 64-bit processors were assumed to lack hardware support for non-aligned transfers. Completed conversion of the Resource Manager to nearly full table-driven operation. Specifically, the resource conversion code (convert AML to internal format and the reverse) and the debug code to dump internal resource descriptors are fully table-driven, reducing code and data size and improving maintainability. The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word on 64-bit processors instead of a fixed 32-bit word. (Alexey Starikovskiy) Implemented support within the resource conversion code for the Type-Specific byte within the various ACPI 3.0 *WordSpace macros. Fixed some issues within the resource conversion code for the type-specific flags for both Memory and I/O address resource descriptors. For Memory, implemented support for the MTP and TTP flags. For I/O, split the TRS and TTP flags into two separate fields. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
343 lines
11 KiB
C
343 lines
11 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 - 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/acresrc.h>
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rslist")
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/* Local prototypes */
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static struct acpi_rsconvert_info *acpi_rs_get_conversion_info(u8
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resource_type);
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static acpi_status acpi_rs_validate_resource_length(union aml_resource *aml);
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_validate_resource_length
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*
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* PARAMETERS: Aml - Pointer to the AML resource descriptor
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*
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* RETURN: Status - AE_OK if the resource length appears valid
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*
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* DESCRIPTION: Validate the resource_length. Fixed-length descriptors must
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* have the exact length; variable-length descriptors must be
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* at least as long as the minimum. Certain Small descriptors
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* can vary in size by at most one byte.
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*
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******************************************************************************/
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static acpi_status acpi_rs_validate_resource_length(union aml_resource *aml)
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{
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struct acpi_resource_info *resource_info;
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u16 minimum_aml_resource_length;
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u16 resource_length;
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ACPI_FUNCTION_ENTRY();
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/* Get the size and type info about this resource descriptor */
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resource_info =
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acpi_rs_get_resource_info(aml->small_header.descriptor_type);
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if (!resource_info) {
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return (AE_AML_INVALID_RESOURCE_TYPE);
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}
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resource_length = acpi_ut_get_resource_length(aml);
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minimum_aml_resource_length =
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resource_info->minimum_aml_resource_length;
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/* Validate based upon the type of resource, fixed length or variable */
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if (resource_info->length_type == ACPI_FIXED_LENGTH) {
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/* Fixed length resource, length must match exactly */
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if (resource_length != minimum_aml_resource_length) {
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return (AE_AML_BAD_RESOURCE_LENGTH);
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}
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} else if (resource_info->length_type == ACPI_VARIABLE_LENGTH) {
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/* Variable length resource, must be at least the minimum */
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if (resource_length < minimum_aml_resource_length) {
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return (AE_AML_BAD_RESOURCE_LENGTH);
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}
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} else {
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/* Small variable length resource, allowed to be (Min) or (Min-1) */
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if ((resource_length > minimum_aml_resource_length) ||
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(resource_length < (minimum_aml_resource_length - 1))) {
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return (AE_AML_BAD_RESOURCE_LENGTH);
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}
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_conversion_info
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*
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* PARAMETERS: resource_type - Byte 0 of a resource descriptor
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*
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* RETURN: Pointer to the resource conversion info table
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*
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* DESCRIPTION: Get the conversion table associated with this resource type
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*
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******************************************************************************/
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static struct acpi_rsconvert_info *acpi_rs_get_conversion_info(u8 resource_type)
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{
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ACPI_FUNCTION_ENTRY();
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/* Determine if this is a small or large resource */
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if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
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/* Large Resource Type -- bits 6:0 contain the name */
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if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
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return (NULL);
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}
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return (acpi_gbl_lg_get_resource_dispatch[(resource_type &
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ACPI_RESOURCE_NAME_LARGE_MASK)]);
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} else {
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/* Small Resource Type -- bits 6:3 contain the name */
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return (acpi_gbl_sm_get_resource_dispatch[((resource_type &
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ACPI_RESOURCE_NAME_SMALL_MASK)
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>> 3)]);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_convert_aml_to_resources
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*
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* PARAMETERS: aml_buffer - Pointer to the resource byte stream
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* aml_buffer_length - Length of aml_buffer
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* output_buffer - 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: Takes the resource byte stream and parses it, creating a
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* linked list 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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acpi_rs_convert_aml_to_resources(u8 * aml_buffer,
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u32 aml_buffer_length, u8 * output_buffer)
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{
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u8 *buffer = output_buffer;
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acpi_status status;
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acpi_size bytes_parsed = 0;
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struct acpi_resource *resource;
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acpi_rsdesc_size descriptor_length;
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struct acpi_rsconvert_info *info;
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ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources");
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/* Loop until end-of-buffer or an end_tag is found */
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while (bytes_parsed < aml_buffer_length) {
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/* Get the conversion table associated with this Descriptor Type */
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info = acpi_rs_get_conversion_info(*aml_buffer);
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if (!info) {
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/* No table indicates an invalid resource type */
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return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
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}
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descriptor_length = acpi_ut_get_descriptor_length(aml_buffer);
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/*
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* Perform limited validation of the resource length, based upon
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* what we know about the resource type
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*/
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status =
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acpi_rs_validate_resource_length(ACPI_CAST_PTR
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(union aml_resource,
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aml_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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/* Convert the AML byte stream resource to a local resource struct */
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status =
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acpi_rs_convert_aml_to_resource(ACPI_CAST_PTR
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(struct acpi_resource,
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buffer),
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ACPI_CAST_PTR(union
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aml_resource,
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aml_buffer),
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info);
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if (ACPI_FAILURE(status)) {
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ACPI_REPORT_ERROR(("Could not convert AML resource (type %X) to resource, %s\n", *aml_buffer, acpi_format_exception(status)));
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return_ACPI_STATUS(status);
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}
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/* Set the aligned length of the new resource descriptor */
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resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
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resource->length =
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(u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
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/* Normal exit on completion of an end_tag resource descriptor */
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if (acpi_ut_get_resource_type(aml_buffer) ==
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ACPI_RESOURCE_NAME_END_TAG) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Update counter and point to the next input resource */
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bytes_parsed += descriptor_length;
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aml_buffer += descriptor_length;
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/* Point to the next structure in the output buffer */
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buffer += resource->length;
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}
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/* Completed buffer, but did not find an end_tag resource descriptor */
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return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_convert_resources_to_aml
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*
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* PARAMETERS: Resource - Pointer to the resource linked list
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* aml_size_needed - Calculated size of the byte stream
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* needed from calling acpi_rs_get_aml_length()
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* The size of the output_buffer is
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* guaranteed to be >= aml_size_needed
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* output_buffer - 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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acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
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acpi_size aml_size_needed, u8 * output_buffer)
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{
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u8 *aml_buffer = output_buffer;
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u8 *end_aml_buffer = output_buffer + aml_size_needed;
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acpi_status status;
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ACPI_FUNCTION_TRACE("rs_convert_resources_to_aml");
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/* Walk the resource descriptor list, convert each descriptor */
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while (aml_buffer < end_aml_buffer) {
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/* Validate the Resource Type */
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if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Invalid descriptor type (%X) in resource list\n",
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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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status = acpi_rs_convert_resource_to_aml(resource,
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ACPI_CAST_PTR(union
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aml_resource,
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aml_buffer),
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acpi_gbl_set_resource_dispatch
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[resource->type]);
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if (ACPI_FAILURE(status)) {
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ACPI_REPORT_ERROR(("Could not convert resource (type %X) to AML, %s\n", resource->type, acpi_format_exception(status)));
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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 =
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acpi_rs_validate_resource_length(ACPI_CAST_PTR
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(union aml_resource,
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aml_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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/* Check for end-of-list, normal exit */
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if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
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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_buffer to point to the next (output) resource descriptor
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*/
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aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
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/* Point to the next input resource descriptor */
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resource =
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ACPI_PTR_ADD(struct acpi_resource, resource,
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resource->length);
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/* Check for end-of-list, normal exit */
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}
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/* Completed buffer, but did not find an end_tag resource descriptor */
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return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
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}
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