561 строка
14 KiB
C
561 строка
14 KiB
C
/*******************************************************************************
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*
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* Module Name: rsmisc - Miscellaneous resource descriptors
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, 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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#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("rsmisc")
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#define INIT_RESOURCE_TYPE(i) i->resource_offset
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#define INIT_RESOURCE_LENGTH(i) i->aml_offset
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#define INIT_TABLE_LENGTH(i) i->value
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#define COMPARE_OPCODE(i) i->resource_offset
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#define COMPARE_TARGET(i) i->aml_offset
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#define COMPARE_VALUE(i) i->value
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_convert_aml_to_resource
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*
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* PARAMETERS: Resource - Pointer to the resource descriptor
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* Aml - Where the AML descriptor is returned
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* Info - Pointer to appropriate conversion table
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an external AML resource descriptor to the corresponding
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* internal resource descriptor
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*
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******************************************************************************/
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acpi_status
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acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
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union aml_resource *aml,
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struct acpi_rsconvert_info *info)
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{
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acpi_rs_length aml_resource_length;
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void *source;
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void *destination;
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char *target;
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u8 count;
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u8 flags_mode = FALSE;
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u16 item_count = 0;
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u16 temp16 = 0;
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ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);
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if (((acpi_size) resource) & 0x3) {
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/* Each internal resource struct is expected to be 32-bit aligned */
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ACPI_WARNING((AE_INFO,
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"Misaligned resource pointer (get): %p Type %2.2X Len %X",
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resource, resource->type, resource->length));
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}
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/* Extract the resource Length field (does not include header length) */
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aml_resource_length = acpi_ut_get_resource_length(aml);
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/*
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* First table entry must be ACPI_RSC_INITxxx and must contain the
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* table length (# of table entries)
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*/
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count = INIT_TABLE_LENGTH(info);
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while (count) {
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/*
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* Source is the external AML byte stream buffer,
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* destination is the internal resource descriptor
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*/
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source = ACPI_ADD_PTR(void, aml, info->aml_offset);
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destination =
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ACPI_ADD_PTR(void, resource, info->resource_offset);
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switch (info->opcode) {
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case ACPI_RSC_INITGET:
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/*
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* Get the resource type and the initial (minimum) length
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*/
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ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
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resource->type = INIT_RESOURCE_TYPE(info);
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resource->length = INIT_RESOURCE_LENGTH(info);
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break;
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case ACPI_RSC_INITSET:
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break;
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case ACPI_RSC_FLAGINIT:
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flags_mode = TRUE;
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break;
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case ACPI_RSC_1BITFLAG:
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/*
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* Mask and shift the flag bit
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*/
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ACPI_SET8(destination) = (u8)
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((ACPI_GET8(source) >> info->value) & 0x01);
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break;
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case ACPI_RSC_2BITFLAG:
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/*
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* Mask and shift the flag bits
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*/
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ACPI_SET8(destination) = (u8)
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((ACPI_GET8(source) >> info->value) & 0x03);
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break;
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case ACPI_RSC_COUNT:
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item_count = ACPI_GET8(source);
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ACPI_SET8(destination) = (u8) item_count;
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resource->length = resource->length +
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(info->value * (item_count - 1));
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break;
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case ACPI_RSC_COUNT16:
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item_count = aml_resource_length;
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ACPI_SET16(destination) = item_count;
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resource->length = resource->length +
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(info->value * (item_count - 1));
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break;
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case ACPI_RSC_LENGTH:
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resource->length = resource->length + info->value;
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break;
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case ACPI_RSC_MOVE8:
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case ACPI_RSC_MOVE16:
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case ACPI_RSC_MOVE32:
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case ACPI_RSC_MOVE64:
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/*
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* Raw data move. Use the Info value field unless item_count has
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* been previously initialized via a COUNT opcode
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*/
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if (info->value) {
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item_count = info->value;
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}
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acpi_rs_move_data(destination, source, item_count,
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info->opcode);
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break;
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case ACPI_RSC_SET8:
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ACPI_MEMSET(destination, info->aml_offset, info->value);
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break;
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case ACPI_RSC_DATA8:
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target = ACPI_ADD_PTR(char, resource, info->value);
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ACPI_MEMCPY(destination, source, ACPI_GET16(target));
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break;
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case ACPI_RSC_ADDRESS:
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/*
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* Common handler for address descriptor flags
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*/
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if (!acpi_rs_get_address_common(resource, aml)) {
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return_ACPI_STATUS
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(AE_AML_INVALID_RESOURCE_TYPE);
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}
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break;
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case ACPI_RSC_SOURCE:
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/*
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* Optional resource_source (Index and String)
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*/
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resource->length +=
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acpi_rs_get_resource_source(aml_resource_length,
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info->value,
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destination, aml, NULL);
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break;
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case ACPI_RSC_SOURCEX:
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/*
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* Optional resource_source (Index and String). This is the more
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* complicated case used by the Interrupt() macro
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*/
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target =
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ACPI_ADD_PTR(char, resource,
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info->aml_offset + (item_count * 4));
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resource->length +=
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acpi_rs_get_resource_source(aml_resource_length,
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(acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
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break;
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case ACPI_RSC_BITMASK:
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/*
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* 8-bit encoded bitmask (DMA macro)
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*/
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item_count =
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acpi_rs_decode_bitmask(ACPI_GET8(source),
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destination);
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if (item_count) {
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resource->length += (item_count - 1);
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}
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target = ACPI_ADD_PTR(char, resource, info->value);
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ACPI_SET8(target) = (u8) item_count;
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break;
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case ACPI_RSC_BITMASK16:
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/*
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* 16-bit encoded bitmask (IRQ macro)
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*/
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ACPI_MOVE_16_TO_16(&temp16, source);
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item_count =
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acpi_rs_decode_bitmask(temp16, destination);
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if (item_count) {
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resource->length += (item_count - 1);
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}
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target = ACPI_ADD_PTR(char, resource, info->value);
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ACPI_SET8(target) = (u8) item_count;
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break;
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case ACPI_RSC_EXIT_NE:
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/*
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* Control - Exit conversion if not equal
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*/
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switch (info->resource_offset) {
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case ACPI_RSC_COMPARE_AML_LENGTH:
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if (aml_resource_length != info->value) {
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goto exit;
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}
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break;
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case ACPI_RSC_COMPARE_VALUE:
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if (ACPI_GET8(source) != info->value) {
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goto exit;
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}
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break;
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default:
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ACPI_ERROR((AE_INFO,
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"Invalid conversion sub-opcode"));
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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break;
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default:
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ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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count--;
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info++;
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}
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exit:
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if (!flags_mode) {
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/* Round the resource struct length up to the next boundary (32 or 64) */
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resource->length =
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(u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
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}
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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: acpi_rs_convert_resource_to_aml
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*
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* PARAMETERS: Resource - Pointer to the resource descriptor
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* Aml - Where the AML descriptor is returned
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* Info - Pointer to appropriate conversion table
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*
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* RETURN: Status
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*
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* DESCRIPTION: Convert an internal resource descriptor to the corresponding
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* external AML resource descriptor.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
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union aml_resource *aml,
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struct acpi_rsconvert_info *info)
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{
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void *source = NULL;
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void *destination;
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acpi_rsdesc_size aml_length = 0;
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u8 count;
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u16 temp16 = 0;
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u16 item_count = 0;
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ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);
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/*
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* First table entry must be ACPI_RSC_INITxxx and must contain the
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* table length (# of table entries)
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*/
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count = INIT_TABLE_LENGTH(info);
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while (count) {
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/*
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* Source is the internal resource descriptor,
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* destination is the external AML byte stream buffer
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*/
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source = ACPI_ADD_PTR(void, resource, info->resource_offset);
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destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
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switch (info->opcode) {
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case ACPI_RSC_INITSET:
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ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
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aml_length = INIT_RESOURCE_LENGTH(info);
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acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
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aml_length, aml);
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break;
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case ACPI_RSC_INITGET:
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break;
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case ACPI_RSC_FLAGINIT:
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/*
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* Clear the flag byte
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*/
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ACPI_SET8(destination) = 0;
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break;
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case ACPI_RSC_1BITFLAG:
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/*
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* Mask and shift the flag bit
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*/
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ACPI_SET8(destination) |= (u8)
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((ACPI_GET8(source) & 0x01) << info->value);
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break;
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case ACPI_RSC_2BITFLAG:
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/*
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* Mask and shift the flag bits
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*/
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ACPI_SET8(destination) |= (u8)
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((ACPI_GET8(source) & 0x03) << info->value);
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break;
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case ACPI_RSC_COUNT:
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item_count = ACPI_GET8(source);
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ACPI_SET8(destination) = (u8) item_count;
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aml_length =
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(u16) (aml_length +
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(info->value * (item_count - 1)));
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break;
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case ACPI_RSC_COUNT16:
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item_count = ACPI_GET16(source);
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aml_length = (u16) (aml_length + item_count);
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acpi_rs_set_resource_length(aml_length, aml);
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break;
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case ACPI_RSC_LENGTH:
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acpi_rs_set_resource_length(info->value, aml);
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break;
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case ACPI_RSC_MOVE8:
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case ACPI_RSC_MOVE16:
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case ACPI_RSC_MOVE32:
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case ACPI_RSC_MOVE64:
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if (info->value) {
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item_count = info->value;
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}
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acpi_rs_move_data(destination, source, item_count,
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info->opcode);
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break;
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case ACPI_RSC_ADDRESS:
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/* Set the Resource Type, General Flags, and Type-Specific Flags */
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acpi_rs_set_address_common(aml, resource);
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break;
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case ACPI_RSC_SOURCEX:
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/*
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* Optional resource_source (Index and String)
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*/
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aml_length =
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acpi_rs_set_resource_source(aml, (acpi_rs_length)
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aml_length, source);
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acpi_rs_set_resource_length(aml_length, aml);
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break;
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case ACPI_RSC_SOURCE:
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/*
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* Optional resource_source (Index and String). This is the more
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* complicated case used by the Interrupt() macro
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*/
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aml_length =
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acpi_rs_set_resource_source(aml, info->value,
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source);
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acpi_rs_set_resource_length(aml_length, aml);
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break;
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case ACPI_RSC_BITMASK:
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/*
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* 8-bit encoded bitmask (DMA macro)
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*/
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ACPI_SET8(destination) = (u8)
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acpi_rs_encode_bitmask(source,
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*ACPI_ADD_PTR(u8, resource,
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info->value));
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break;
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case ACPI_RSC_BITMASK16:
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/*
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* 16-bit encoded bitmask (IRQ macro)
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*/
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temp16 = acpi_rs_encode_bitmask(source,
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*ACPI_ADD_PTR(u8,
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resource,
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info->
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value));
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ACPI_MOVE_16_TO_16(destination, &temp16);
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break;
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case ACPI_RSC_EXIT_LE:
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/*
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* Control - Exit conversion if less than or equal
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*/
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if (item_count <= info->value) {
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goto exit;
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}
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break;
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case ACPI_RSC_EXIT_NE:
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/*
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* Control - Exit conversion if not equal
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*/
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switch (COMPARE_OPCODE(info)) {
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case ACPI_RSC_COMPARE_VALUE:
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if (*ACPI_ADD_PTR(u8, resource,
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COMPARE_TARGET(info)) !=
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COMPARE_VALUE(info)) {
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goto exit;
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}
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break;
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default:
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ACPI_ERROR((AE_INFO,
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"Invalid conversion sub-opcode"));
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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break;
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case ACPI_RSC_EXIT_EQ:
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/*
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* Control - Exit conversion if equal
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*/
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if (*ACPI_ADD_PTR(u8, resource,
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COMPARE_TARGET(info)) ==
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COMPARE_VALUE(info)) {
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goto exit;
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}
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break;
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default:
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ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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count--;
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info++;
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}
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exit:
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return_ACPI_STATUS(AE_OK);
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}
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#if 0
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/* Previous resource validations */
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if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
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return_ACPI_STATUS(AE_SUPPORT);
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}
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if (resource->data.start_dpf.performance_robustness >= 3) {
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return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
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}
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if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
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/*
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* Only [active_high, edge_sensitive] or [active_low, level_sensitive]
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* polarity/trigger interrupts are allowed (ACPI spec, section
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* "IRQ Format"), so 0x00 and 0x09 are illegal.
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*/
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ACPI_ERROR((AE_INFO,
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"Invalid interrupt polarity/trigger in resource list, %X",
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aml->irq.flags));
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return_ACPI_STATUS(AE_BAD_DATA);
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}
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resource->data.extended_irq.interrupt_count = temp8;
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if (temp8 < 1) {
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/* Must have at least one IRQ */
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return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
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}
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if (resource->data.dma.transfer == 0x03) {
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ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
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return_ACPI_STATUS(AE_BAD_DATA);
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}
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#endif
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