diff options
Diffstat (limited to 'drivers/acpi/tables/tbget.c')
| -rw-r--r-- | drivers/acpi/tables/tbget.c | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c deleted file mode 100644 index 11e2d44..0000000 --- a/drivers/acpi/tables/tbget.c +++ /dev/null @@ -1,471 +0,0 @@ -/****************************************************************************** - * - * Module Name: tbget - ACPI Table get* routines - * - *****************************************************************************/ - -/* - * 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("tbget") - -/* Local prototypes */ -static acpi_status -acpi_tb_get_this_table(struct acpi_pointer *address, - struct acpi_table_header *header, - struct acpi_table_desc *table_info); - -static acpi_status -acpi_tb_table_override(struct acpi_table_header *header, - struct acpi_table_desc *table_info); - -/******************************************************************************* - * - * FUNCTION: acpi_tb_get_table - * - * PARAMETERS: Address - Address of table to retrieve. Can be - * Logical or Physical - * table_info - Where table info is returned - * - * RETURN: None - * - * DESCRIPTION: Get entire table of unknown size. - * - ******************************************************************************/ - -acpi_status -acpi_tb_get_table(struct acpi_pointer *address, - struct acpi_table_desc *table_info) -{ - acpi_status status; - struct acpi_table_header header; - - ACPI_FUNCTION_TRACE(tb_get_table); - - /* Get the header in order to get signature and table size */ - - status = acpi_tb_get_table_header(address, &header); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Get the entire table */ - - status = acpi_tb_get_table_body(address, &header, table_info); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, - "Could not get ACPI table (size %X)", - header.length)); - return_ACPI_STATUS(status); - } - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_get_table_header - * - * PARAMETERS: Address - Address of table to retrieve. Can be - * Logical or Physical - * return_header - Where the table header is returned - * - * RETURN: Status - * - * DESCRIPTION: Get an ACPI table header. Works in both physical or virtual - * addressing mode. Works with both physical or logical pointers. - * Table is either copied or mapped, depending on the pointer - * type and mode of the processor. - * - ******************************************************************************/ - -acpi_status -acpi_tb_get_table_header(struct acpi_pointer *address, - struct acpi_table_header *return_header) -{ - acpi_status status = AE_OK; - struct acpi_table_header *header = NULL; - - ACPI_FUNCTION_TRACE(tb_get_table_header); - - /* - * Flags contains the current processor mode (Virtual or Physical - * addressing) The pointer_type is either Logical or Physical - */ - switch (address->pointer_type) { - case ACPI_PHYSMODE_PHYSPTR: - case ACPI_LOGMODE_LOGPTR: - - /* Pointer matches processor mode, copy the header */ - - ACPI_MEMCPY(return_header, address->pointer.logical, - sizeof(struct acpi_table_header)); - break; - - case ACPI_LOGMODE_PHYSPTR: - - /* Create a logical address for the physical pointer */ - - status = acpi_os_map_memory(address->pointer.physical, - sizeof(struct acpi_table_header), - (void *)&header); - if (ACPI_FAILURE(status)) { - ACPI_ERROR((AE_INFO, - "Could not map memory at %8.8X%8.8X for table header", - ACPI_FORMAT_UINT64(address->pointer. - physical))); - return_ACPI_STATUS(status); - } - - /* Copy header and delete mapping */ - - ACPI_MEMCPY(return_header, header, - sizeof(struct acpi_table_header)); - acpi_os_unmap_memory(header, sizeof(struct acpi_table_header)); - break; - - default: - - ACPI_ERROR((AE_INFO, "Invalid address flags %X", - address->pointer_type)); - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Table Signature: [%4.4s]\n", - return_header->signature)); - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_get_table_body - * - * PARAMETERS: Address - Address of table to retrieve. Can be - * Logical or Physical - * Header - Header of the table to retrieve - * table_info - Where the table info is returned - * - * RETURN: Status - * - * DESCRIPTION: Get an entire ACPI table with support to allow the host OS to - * replace the table with a newer version (table override.) - * Works in both physical or virtual - * addressing mode. Works with both physical or logical pointers. - * Table is either copied or mapped, depending on the pointer - * type and mode of the processor. - * - ******************************************************************************/ - -acpi_status -acpi_tb_get_table_body(struct acpi_pointer *address, - struct acpi_table_header *header, - struct acpi_table_desc *table_info) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(tb_get_table_body); - - if (!table_info || !address) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Attempt table override. */ - - status = acpi_tb_table_override(header, table_info); - if (ACPI_SUCCESS(status)) { - - /* Table was overridden by the host OS */ - - return_ACPI_STATUS(status); - } - - /* No override, get the original table */ - - status = acpi_tb_get_this_table(address, header, table_info); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_table_override - * - * PARAMETERS: Header - Pointer to table header - * table_info - Return info if table is overridden - * - * RETURN: None - * - * DESCRIPTION: Attempts override of current table with a new one if provided - * by the host OS. - * - ******************************************************************************/ - -static acpi_status -acpi_tb_table_override(struct acpi_table_header *header, - struct acpi_table_desc *table_info) -{ - struct acpi_table_header *new_table; - acpi_status status; - struct acpi_pointer address; - - ACPI_FUNCTION_TRACE(tb_table_override); - - /* - * The OSL will examine the header and decide whether to override this - * table. If it decides to override, a table will be returned in new_table, - * which we will then copy. - */ - status = acpi_os_table_override(header, &new_table); - if (ACPI_FAILURE(status)) { - - /* Some severe error from the OSL, but we basically ignore it */ - - ACPI_EXCEPTION((AE_INFO, status, - "Could not override ACPI table")); - return_ACPI_STATUS(status); - } - - if (!new_table) { - - /* No table override */ - - return_ACPI_STATUS(AE_NO_ACPI_TABLES); - } - - /* - * We have a new table to override the old one. Get a copy of - * the new one. We know that the new table has a logical pointer. - */ - address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; - address.pointer.logical = new_table; - - status = acpi_tb_get_this_table(&address, new_table, table_info); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Could not copy ACPI table")); - return_ACPI_STATUS(status); - } - - /* Copy the table info */ - - ACPI_INFO((AE_INFO, "Table [%4.4s] replaced by host OS", - table_info->pointer->signature)); - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_get_this_table - * - * PARAMETERS: Address - Address of table to retrieve. Can be - * Logical or Physical - * Header - Header of the table to retrieve - * table_info - Where the table info is returned - * - * RETURN: Status - * - * DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual - * addressing mode. Works with both physical or logical pointers. - * Table is either copied or mapped, depending on the pointer - * type and mode of the processor. - * - ******************************************************************************/ - -static acpi_status -acpi_tb_get_this_table(struct acpi_pointer *address, - struct acpi_table_header *header, - struct acpi_table_desc *table_info) -{ - struct acpi_table_header *full_table = NULL; - u8 allocation; - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE(tb_get_this_table); - - /* Validate minimum length */ - - if (header->length < sizeof(struct acpi_table_header)) { - ACPI_ERROR((AE_INFO, - "Table length (%X) is smaller than minimum (%zX)", - header->length, sizeof(struct acpi_table_header))); - - return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); - } - - /* - * Flags contains the current processor mode (Virtual or Physical - * addressing) The pointer_type is either Logical or Physical - */ - switch (address->pointer_type) { - case ACPI_PHYSMODE_PHYSPTR: - case ACPI_LOGMODE_LOGPTR: - - /* Pointer matches processor mode, copy the table to a new buffer */ - - full_table = ACPI_ALLOCATE(header->length); - if (!full_table) { - ACPI_ERROR((AE_INFO, - "Could not allocate table memory for [%4.4s] length %X", - header->signature, header->length)); - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Copy the entire table (including header) to the local buffer */ - - ACPI_MEMCPY(full_table, address->pointer.logical, - header->length); - - /* Save allocation type */ - - allocation = ACPI_MEM_ALLOCATED; - break; - - case ACPI_LOGMODE_PHYSPTR: - - /* - * Just map the table's physical memory - * into our address space. - */ - status = acpi_os_map_memory(address->pointer.physical, - (acpi_size) header->length, - ACPI_CAST_PTR(void, &full_table)); - if (ACPI_FAILURE(status)) { - ACPI_ERROR((AE_INFO, - "Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X", - header->signature, - ACPI_FORMAT_UINT64(address->pointer. - physical), - header->length)); - return (status); - } - - /* Save allocation type */ - - allocation = ACPI_MEM_MAPPED; - break; - - default: - - ACPI_ERROR((AE_INFO, "Invalid address flags %X", - address->pointer_type)); - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* - * Validate checksum for _most_ tables, - * even the ones whose signature we don't recognize - */ - if (table_info->type != ACPI_TABLE_ID_FACS) { - status = acpi_tb_verify_table_checksum(full_table); - -#if (!ACPI_CHECKSUM_ABORT) - if (ACPI_FAILURE(status)) { - - /* Ignore the error if configuration says so */ - - status = AE_OK; - } -#endif - } - - /* Return values */ - - table_info->pointer = full_table; - table_info->length = (acpi_size) header->length; - table_info->allocation = allocation; - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n", - full_table->signature, - ACPI_FORMAT_UINT64(address->pointer.physical), - full_table)); - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_tb_get_table_ptr - * - * PARAMETERS: table_type - one of the defined table types - * Instance - Which table of this type - * return_table - pointer to location to place the pointer for - * return - * - * RETURN: Status - * - * DESCRIPTION: This function is called to get the pointer to an ACPI table. - * - ******************************************************************************/ - -acpi_status -acpi_tb_get_table_ptr(acpi_table_type table_type, - u32 instance, struct acpi_table_header **return_table) -{ - struct acpi_table_desc *table_desc; - u32 i; - - ACPI_FUNCTION_TRACE(tb_get_table_ptr); - - if (table_type > ACPI_TABLE_ID_MAX) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Check for instance out of range of the current table count */ - - if (instance > acpi_gbl_table_lists[table_type].count) { - return_ACPI_STATUS(AE_NOT_EXIST); - } - - /* - * Walk the list to get the desired table - * Note: Instance is one-based - */ - table_desc = acpi_gbl_table_lists[table_type].next; - for (i = 1; i < instance; i++) { - table_desc = table_desc->next; - } - - /* We are now pointing to the requested table's descriptor */ - - *return_table = table_desc->pointer; - return_ACPI_STATUS(AE_OK); -} |