forked from Minki/linux
44f6c01242
Fixed three cases in the interpreter where an "index" argument to an ASL function was still (internally) 32 bits instead of the required 64 bits. This was the Index argument to the Index, Mid, and Match operators. The "strupr" function is now permanently local (acpi_ut_strupr), since this is not a POSIX-defined function and not present in most kernel-level C libraries. References to the C library strupr function have been removed from the headers. Completed the deployment of static functions/prototypes. All prototypes with the static attribute have been moved from the headers to the owning C file. ACPICA 20050329 from Bob Moore An error is now generated if an attempt is made to create a Buffer Field of length zero (A CreateField with a length operand of zero.) The interpreter now issues a warning whenever executable code at the module level is detected during ACPI table load. This will give some idea of the prevalence of this type of code. Implemented support for references to named objects (other than control methods) within package objects. Enhanced package object output for the debug object. Package objects are now completely dumped, showing all elements. Enhanced miscellaneous object output for the debug object. Any object can now be written to the debug object (for example, a device object can be written, and the type of the object will be displayed.) The "static" qualifier has been added to all local functions across the core subsystem. The number of "long" lines (> 80 chars) within the source has been significantly reduced, by about 1/3. Cleaned up all header files to ensure that all CA/iASL functions are prototyped (even static functions) and the formatting is consistent. Two new header files have been added, acopcode.h and acnames.h. Removed several obsolete functions that were no longer used. Signed-off-by: Len Brown <len.brown@intel.com>
509 lines
15 KiB
C
509 lines
15 KiB
C
/******************************************************************************
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*
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* Module Name: tbget - ACPI Table get* routines
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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/actables.h>
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME ("tbget")
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/* Local prototypes */
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static acpi_status
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acpi_tb_get_this_table (
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struct acpi_pointer *address,
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struct acpi_table_header *header,
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struct acpi_table_desc *table_info);
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static acpi_status
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acpi_tb_table_override (
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struct acpi_table_header *header,
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struct acpi_table_desc *table_info);
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_table
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* table_info - Where table info is returned
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*
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* RETURN: None
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*
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* DESCRIPTION: Get entire table of unknown size.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_table (
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struct acpi_pointer *address,
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struct acpi_table_desc *table_info)
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{
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acpi_status status;
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struct acpi_table_header header;
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ACPI_FUNCTION_TRACE ("tb_get_table");
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/* Get the header in order to get signature and table size */
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status = acpi_tb_get_table_header (address, &header);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/* Get the entire table */
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status = acpi_tb_get_table_body (address, &header, table_info);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not get ACPI table (size %X), %s\n",
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header.length, acpi_format_exception (status)));
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return_ACPI_STATUS (status);
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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_tb_get_table_header
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* return_header - Where the table header is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_table_header (
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struct acpi_pointer *address,
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struct acpi_table_header *return_header)
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{
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acpi_status status = AE_OK;
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struct acpi_table_header *header = NULL;
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ACPI_FUNCTION_TRACE ("tb_get_table_header");
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/*
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* Flags contains the current processor mode (Virtual or Physical
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* addressing) The pointer_type is either Logical or Physical
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*/
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switch (address->pointer_type) {
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case ACPI_PHYSMODE_PHYSPTR:
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case ACPI_LOGMODE_LOGPTR:
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/* Pointer matches processor mode, copy the header */
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ACPI_MEMCPY (return_header, address->pointer.logical,
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sizeof (struct acpi_table_header));
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break;
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case ACPI_LOGMODE_PHYSPTR:
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/* Create a logical address for the physical pointer*/
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status = acpi_os_map_memory (address->pointer.physical,
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sizeof (struct acpi_table_header), (void *) &header);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR ((
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"Could not map memory at %8.8X%8.8X for length %X\n",
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ACPI_FORMAT_UINT64 (address->pointer.physical),
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sizeof (struct acpi_table_header)));
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return_ACPI_STATUS (status);
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}
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/* Copy header and delete mapping */
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ACPI_MEMCPY (return_header, header, sizeof (struct acpi_table_header));
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acpi_os_unmap_memory (header, sizeof (struct acpi_table_header));
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break;
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default:
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ACPI_REPORT_ERROR (("Invalid address flags %X\n",
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address->pointer_type));
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Table Signature: [%4.4s]\n",
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return_header->signature));
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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_tb_get_table_body
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* Header - Header of the table to retrieve
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* table_info - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
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* replace the table with a newer version (table override.)
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* Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_table_body (
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struct acpi_pointer *address,
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struct acpi_table_header *header,
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struct acpi_table_desc *table_info)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE ("tb_get_table_body");
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if (!table_info || !address) {
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Attempt table override. */
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status = acpi_tb_table_override (header, table_info);
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if (ACPI_SUCCESS (status)) {
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/* Table was overridden by the host OS */
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return_ACPI_STATUS (status);
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}
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/* No override, get the original table */
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status = acpi_tb_get_this_table (address, header, table_info);
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_table_override
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*
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* PARAMETERS: Header - Pointer to table header
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* table_info - Return info if table is overridden
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*
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* RETURN: None
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*
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* DESCRIPTION: Attempts override of current table with a new one if provided
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* by the host OS.
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*
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******************************************************************************/
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static acpi_status
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acpi_tb_table_override (
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struct acpi_table_header *header,
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struct acpi_table_desc *table_info)
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{
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struct acpi_table_header *new_table;
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acpi_status status;
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struct acpi_pointer address;
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ACPI_FUNCTION_TRACE ("tb_table_override");
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/*
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* The OSL will examine the header and decide whether to override this
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* table. If it decides to override, a table will be returned in new_table,
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* which we will then copy.
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*/
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status = acpi_os_table_override (header, &new_table);
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if (ACPI_FAILURE (status)) {
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/* Some severe error from the OSL, but we basically ignore it */
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ACPI_REPORT_ERROR (("Could not override ACPI table, %s\n",
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acpi_format_exception (status)));
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return_ACPI_STATUS (status);
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}
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if (!new_table) {
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/* No table override */
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/*
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* We have a new table to override the old one. Get a copy of
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* the new one. We know that the new table has a logical pointer.
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*/
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address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
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address.pointer.logical = new_table;
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status = acpi_tb_get_this_table (&address, new_table, table_info);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not copy override ACPI table, %s\n",
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acpi_format_exception (status)));
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return_ACPI_STATUS (status);
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}
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/* Copy the table info */
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ACPI_REPORT_INFO (("Table [%4.4s] replaced by host OS\n",
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table_info->pointer->signature));
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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_tb_get_this_table
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*
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* PARAMETERS: Address - Address of table to retrieve. Can be
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* Logical or Physical
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* Header - Header of the table to retrieve
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* table_info - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
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* addressing mode. Works with both physical or logical pointers.
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* Table is either copied or mapped, depending on the pointer
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* type and mode of the processor.
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*
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******************************************************************************/
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static acpi_status
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acpi_tb_get_this_table (
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struct acpi_pointer *address,
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struct acpi_table_header *header,
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struct acpi_table_desc *table_info)
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{
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struct acpi_table_header *full_table = NULL;
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u8 allocation;
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE ("tb_get_this_table");
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/*
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* Flags contains the current processor mode (Virtual or Physical
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* addressing) The pointer_type is either Logical or Physical
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*/
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switch (address->pointer_type) {
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case ACPI_PHYSMODE_PHYSPTR:
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case ACPI_LOGMODE_LOGPTR:
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/* Pointer matches processor mode, copy the table to a new buffer */
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full_table = ACPI_MEM_ALLOCATE (header->length);
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if (!full_table) {
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ACPI_REPORT_ERROR ((
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"Could not allocate table memory for [%4.4s] length %X\n",
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header->signature, header->length));
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the entire table (including header) to the local buffer */
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ACPI_MEMCPY (full_table, address->pointer.logical, header->length);
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/* Save allocation type */
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allocation = ACPI_MEM_ALLOCATED;
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break;
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case ACPI_LOGMODE_PHYSPTR:
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/*
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* Just map the table's physical memory
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* into our address space.
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*/
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status = acpi_os_map_memory (address->pointer.physical,
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(acpi_size) header->length, (void *) &full_table);
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if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR ((
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"Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X\n",
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header->signature,
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ACPI_FORMAT_UINT64 (address->pointer.physical),
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header->length));
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return (status);
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}
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/* Save allocation type */
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allocation = ACPI_MEM_MAPPED;
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break;
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default:
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid address flags %X\n",
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address->pointer_type));
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* Validate checksum for _most_ tables,
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* even the ones whose signature we don't recognize
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*/
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if (table_info->type != ACPI_TABLE_FACS) {
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status = acpi_tb_verify_table_checksum (full_table);
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#if (!ACPI_CHECKSUM_ABORT)
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if (ACPI_FAILURE (status)) {
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/* Ignore the error if configuration says so */
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status = AE_OK;
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}
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#endif
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}
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/* Return values */
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table_info->pointer = full_table;
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table_info->length = (acpi_size) header->length;
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table_info->allocation = allocation;
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n",
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full_table->signature,
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ACPI_FORMAT_UINT64 (address->pointer.physical), full_table));
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return_ACPI_STATUS (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_tb_get_table_ptr
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*
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* PARAMETERS: table_type - one of the defined table types
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* Instance - Which table of this type
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* table_ptr_loc - pointer to location to place the pointer for
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* return
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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 pointer to an ACPI table.
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*
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******************************************************************************/
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acpi_status
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acpi_tb_get_table_ptr (
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acpi_table_type table_type,
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u32 instance,
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struct acpi_table_header **table_ptr_loc)
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{
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struct acpi_table_desc *table_desc;
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u32 i;
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ACPI_FUNCTION_TRACE ("tb_get_table_ptr");
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if (!acpi_gbl_DSDT) {
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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if (table_type > ACPI_TABLE_MAX) {
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* For all table types (Single/Multiple), the first
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* instance is always in the list head.
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*/
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if (instance == 1) {
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/* Get the first */
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*table_ptr_loc = NULL;
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if (acpi_gbl_table_lists[table_type].next) {
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*table_ptr_loc = acpi_gbl_table_lists[table_type].next->pointer;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/* Check for instance out of range */
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if (instance > acpi_gbl_table_lists[table_type].count) {
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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/* Walk the list to get the desired table
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* Since the if (Instance == 1) check above checked for the
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* first table, setting table_desc equal to the .Next member
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* is actually pointing to the second table. Therefore, we
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* need to walk from the 2nd table until we reach the Instance
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* that the user is looking for and return its table pointer.
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*/
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table_desc = acpi_gbl_table_lists[table_type].next;
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for (i = 2; i < instance; i++) {
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table_desc = table_desc->next;
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}
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/* We are now pointing to the requested table's descriptor */
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*table_ptr_loc = table_desc->pointer;
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return_ACPI_STATUS (AE_OK);
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}
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