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linux-next/drivers/acpi/tables/tbinstal.c
Bob Moore f3d2e7865c ACPICA: Implement simplified Table Manager
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>
2007-02-02 21:14:21 -05:00

536 lines
15 KiB
C

/******************************************************************************
*
* Module Name: tbinstal - ACPI table installation and removal
*
*****************************************************************************/
/*
* 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/acnamesp.h>
#include <acpi/actables.h>
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbinstal")
/******************************************************************************
*
* FUNCTION: acpi_tb_verify_table
*
* PARAMETERS: table_desc - table
*
* RETURN: Status
*
* DESCRIPTION: this function is called to verify and map table
*
*****************************************************************************/
acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)
{
u8 checksum;
ACPI_FUNCTION_TRACE(tb_verify_table);
/* Map the table if necessary */
if (!table_desc->pointer) {
table_desc->pointer =
acpi_tb_map(table_desc->address, table_desc->length,
table_desc->flags & ACPI_TABLE_ORIGIN_MASK);
if (!table_desc->pointer) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
/* FACS is the odd table, has no standard ACPI header and no checksum */
if (ACPI_COMPARE_NAME(&(table_desc->signature), ACPI_SIG_FACS)) {
return_ACPI_STATUS(AE_OK);
}
/* Always calculate checksum, ignore bad checksum if requested */
checksum = acpi_tb_checksum(ACPI_CAST_PTR(void, table_desc->pointer),
table_desc->length);
#if (ACPI_CHECKSUM_ABORT)
if (checksum) {
return_ACPI_STATUS(AE_BAD_CHECKSUM);
}
#endif
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_add_table
*
* PARAMETERS: Table - Pointer to the table header
* table_index - Where the table index is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to add the ACPI table
*
******************************************************************************/
acpi_status
acpi_tb_add_table(struct acpi_table_header *table,
acpi_native_uint * table_index)
{
acpi_native_uint i;
acpi_native_uint length;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_add_table);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Check if table is already registered */
for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
if (!acpi_gbl_root_table_list.tables[i].pointer) {
status =
acpi_tb_verify_table(&acpi_gbl_root_table_list.
tables[i]);
if (ACPI_FAILURE(status)
|| !acpi_gbl_root_table_list.tables[i].pointer) {
continue;
}
}
length = ACPI_MIN(table->length,
acpi_gbl_root_table_list.tables[i].pointer->
length);
if (ACPI_MEMCMP
(table, acpi_gbl_root_table_list.tables[i].pointer,
length)) {
continue;
}
/* Table is already registered */
ACPI_FREE(table);
*table_index = i;
goto release;
}
/*
* Add the table to the global table list
*/
status = acpi_tb_store_table(ACPI_TO_INTEGER(table),
table, table->length,
ACPI_TABLE_ORIGIN_ALLOCATED, table_index);
if (ACPI_FAILURE(status)) {
goto release;
}
acpi_tb_print_table_header(0, table);
release:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_resize_root_table_list
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Expand the size of global table array
*
******************************************************************************/
acpi_status acpi_tb_resize_root_table_list(void)
{
struct acpi_table_desc *tables;
ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
/* allow_resize flag is a parameter to acpi_initialize_tables */
if (!(acpi_gbl_root_table_list.flags & ACPI_TABLE_FLAGS_ALLOW_RESIZE)) {
ACPI_ERROR((AE_INFO,
"Resize of Root Table Array is not allowed"));
return_ACPI_STATUS(AE_SUPPORT);
}
/* Increase the Table Array size */
tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +
ACPI_ROOT_TABLE_SIZE_INCREMENT)
* sizeof(struct acpi_table_desc));
if (!tables) {
ACPI_ERROR((AE_INFO,
"Could not allocate new root table array"));
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Copy and free the previous table array */
if (acpi_gbl_root_table_list.tables) {
ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,
acpi_gbl_root_table_list.size *
sizeof(struct acpi_table_desc));
if (acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK ==
ACPI_TABLE_ORIGIN_ALLOCATED) {
ACPI_FREE(acpi_gbl_root_table_list.tables);
}
}
acpi_gbl_root_table_list.tables = tables;
acpi_gbl_root_table_list.size += ACPI_ROOT_TABLE_SIZE_INCREMENT;
acpi_gbl_root_table_list.flags = (u8) (ACPI_TABLE_ORIGIN_ALLOCATED |
(acpi_gbl_root_table_list.
flags &
~ACPI_TABLE_ORIGIN_MASK));
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_store_table
*
* PARAMETERS: Address - Table address
* Table - Table header
* Length - Table length
* Flags - flags
*
* RETURN: Status and table index.
*
* DESCRIPTION: Add an ACPI table to the global table list
*
******************************************************************************/
acpi_status
acpi_tb_store_table(acpi_physical_address address,
struct acpi_table_header *table,
u32 length, u8 flags, acpi_native_uint * table_index)
{
acpi_status status = AE_OK;
/* Ensure that there is room for the table in the Root Table List */
if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) {
status = acpi_tb_resize_root_table_list();
if (ACPI_FAILURE(status)) {
return (status);
}
}
/* Initialize added table */
acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
address = address;
acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
pointer = table;
acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length =
length;
acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].
owner_id = 0;
acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags =
flags;
ACPI_MOVE_32_TO_32(&
(acpi_gbl_root_table_list.
tables[acpi_gbl_root_table_list.count].signature),
table->signature);
*table_index = acpi_gbl_root_table_list.count;
acpi_gbl_root_table_list.count++;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_delete_table
*
* PARAMETERS: table_index - Table index
*
* RETURN: None
*
* DESCRIPTION: Delete one internal ACPI table
*
******************************************************************************/
void acpi_tb_delete_table(acpi_native_uint table_index)
{
struct acpi_table_desc *table_desc;
/* table_index assumed valid */
table_desc = &acpi_gbl_root_table_list.tables[table_index];
/* Table must be mapped or allocated */
if (!table_desc->pointer) {
return;
}
if (table_desc->flags & ACPI_TABLE_ORIGIN_MAPPED) {
acpi_tb_unmap(table_desc->pointer, table_desc->length,
table_desc->flags & ACPI_TABLE_ORIGIN_MASK);
} else if (table_desc->flags & ACPI_TABLE_ORIGIN_ALLOCATED) {
ACPI_FREE(table_desc->pointer);
}
table_desc->pointer = NULL;
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_terminate
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Delete all internal ACPI tables
*
******************************************************************************/
void acpi_tb_terminate(void)
{
acpi_native_uint i;
ACPI_FUNCTION_TRACE(tb_terminate);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Delete the individual tables */
for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
acpi_tb_delete_table(i);
}
/*
* Delete the root table array if allocated locally. Array cannot be
* mapped, so we don't need to check for that flag.
*/
if ((acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK) ==
ACPI_TABLE_ORIGIN_ALLOCATED) {
ACPI_FREE(acpi_gbl_root_table_list.tables);
}
acpi_gbl_root_table_list.tables = NULL;
acpi_gbl_root_table_list.flags = 0;
acpi_gbl_root_table_list.count = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_delete_namespace_by_owner
*
* PARAMETERS: table_index - Table index
*
* RETURN: None
*
* DESCRIPTION: Delete all namespace objects created when this table was loaded.
*
******************************************************************************/
void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)
{
acpi_owner_id owner_id;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
owner_id =
acpi_gbl_root_table_list.tables[table_index].owner_id;
} else {
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
acpi_ns_delete_namespace_by_owner(owner_id);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_allocate_owner_id
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Allocates owner_id in table_desc
*
******************************************************************************/
acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
status = acpi_ut_allocate_owner_id
(&(acpi_gbl_root_table_list.tables[table_index].owner_id));
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_release_owner_id
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Releases owner_id in table_desc
*
******************************************************************************/
acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_release_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
acpi_ut_release_owner_id(&
(acpi_gbl_root_table_list.
tables[table_index].owner_id));
status = AE_OK;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_owner_id
*
* PARAMETERS: table_index - Table index
* owner_id - Where the table owner_id is returned
*
* RETURN: Status
*
* DESCRIPTION: returns owner_id for the ACPI table
*
******************************************************************************/
acpi_status
acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_get_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
*owner_id =
acpi_gbl_root_table_list.tables[table_index].owner_id;
status = AE_OK;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_is_table_loaded
*
* PARAMETERS: table_index - Table index
*
* RETURN: Table Loaded Flag
*
******************************************************************************/
u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)
{
u8 is_loaded = FALSE;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
is_loaded = (u8)
(acpi_gbl_root_table_list.tables[table_index].
flags & ACPI_TABLE_FLAGS_LOADED);
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return (is_loaded);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_set_table_loaded_flag
*
* PARAMETERS: table_index - Table index
* is_loaded - TRUE if table is loaded, FALSE otherwise
*
* RETURN: None
*
* DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
*
******************************************************************************/
void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)
{
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.count) {
if (is_loaded) {
acpi_gbl_root_table_list.tables[table_index].flags |=
ACPI_TABLE_FLAGS_LOADED;
} else {
acpi_gbl_root_table_list.tables[table_index].flags &=
~ACPI_TABLE_FLAGS_LOADED;
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}