--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: tbfind - find table
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * 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 "accommon.h"
+#include "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, u32 *table_index)
+{
+ u32 i;
+ acpi_status status;
+ struct acpi_table_header header;
+
+ ACPI_FUNCTION_TRACE(tb_find_table);
+
+ /* Normalize the input strings */
+
+ ACPI_MEMSET(&header, 0, sizeof(struct acpi_table_header));
+ ACPI_MOVE_NAME(header.signature, signature);
+ ACPI_STRNCPY(header.oem_id, oem_id, ACPI_OEM_ID_SIZE);
+ ACPI_STRNCPY(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
+
+ /* Search for the table */
+
+ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
+ if (ACPI_MEMCMP(&(acpi_gbl_root_table_list.tables[i].signature),
+ header.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_validate_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,
+ header.signature, ACPI_NAME_SIZE) && (!oem_id[0]
+ ||
+ !ACPI_MEMCMP
+ (acpi_gbl_root_table_list.
+ tables[i].pointer->
+ oem_id,
+ header.oem_id,
+ ACPI_OEM_ID_SIZE))
+ && (!oem_table_id[0]
+ || !ACPI_MEMCMP(acpi_gbl_root_table_list.tables[i].
+ pointer->oem_table_id,
+ header.oem_table_id,
+ ACPI_OEM_TABLE_ID_SIZE))) {
+ *table_index = i;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
+ "Found table [%4.4s]\n",
+ header.signature));
+ return_ACPI_STATUS(AE_OK);
+ }
+ }
+
+ return_ACPI_STATUS(AE_NOT_FOUND);
+}
Code Review / kvmfornfv.git / blobdiff