forked from luck/tmp_suning_uos_patched
f3d2e7865c
The Table Manager component has been completely redesigned and reimplemented. The new design is much simpler, and reduces the overall code and data size of the kernel-resident ACPICA by approximately 5%. Also, it is now possible to obtain the ACPI tables very early during kernel initialization, even before dynamic memory management is initialized. Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
127 lines
4.3 KiB
C
127 lines
4.3 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: tbfind - find table
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2006, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/actables.h>
|
|
|
|
#define _COMPONENT ACPI_TABLES
|
|
ACPI_MODULE_NAME("tbfind")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_find_table
|
|
*
|
|
* PARAMETERS: Signature - String with ACPI table signature
|
|
* oem_id - String with the table OEM ID
|
|
* oem_table_id - String with the OEM Table ID
|
|
* table_index - Where the table index is returned
|
|
*
|
|
* RETURN: Status and table index
|
|
*
|
|
* DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the
|
|
* Signature, OEM ID and OEM Table ID. Returns an index that can
|
|
* be used to get the table header or entire table.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_tb_find_table(char *signature,
|
|
char *oem_id,
|
|
char *oem_table_id, acpi_native_uint * table_index)
|
|
{
|
|
acpi_native_uint i;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(tb_find_table);
|
|
|
|
for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
|
|
if (ACPI_MEMCMP(&(acpi_gbl_root_table_list.tables[i].signature),
|
|
signature, ACPI_NAME_SIZE)) {
|
|
|
|
/* Not the requested table */
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Table with matching signature has been found */
|
|
|
|
if (!acpi_gbl_root_table_list.tables[i].pointer) {
|
|
|
|
/* Table is not currently mapped, map it */
|
|
|
|
status =
|
|
acpi_tb_verify_table(&acpi_gbl_root_table_list.
|
|
tables[i]);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (!acpi_gbl_root_table_list.tables[i].pointer) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Check for table match on all IDs */
|
|
|
|
if (!ACPI_MEMCMP
|
|
(acpi_gbl_root_table_list.tables[i].pointer->signature,
|
|
signature, ACPI_NAME_SIZE) && (!oem_id[0]
|
|
||
|
|
!ACPI_MEMCMP
|
|
(acpi_gbl_root_table_list.
|
|
tables[i].pointer->oem_id,
|
|
oem_id, ACPI_OEM_ID_SIZE))
|
|
&& (!oem_table_id[0]
|
|
|| !ACPI_MEMCMP(acpi_gbl_root_table_list.tables[i].
|
|
pointer->oem_table_id, oem_table_id,
|
|
ACPI_OEM_TABLE_ID_SIZE))) {
|
|
*table_index = i;
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
|
|
"Found table [%4.4s]\n", signature));
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_NOT_FOUND);
|
|
}
|