WSL2-Linux-Kernel/drivers/acpi/acpica/tbinstal.c

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/******************************************************************************
*
* Module Name: tbinstal - ACPI table installation and removal
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2012, 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 "acnamesp.h"
#include "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)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_verify_table);
/* Map the table if necessary */
ACPICA 20050408 from Bob Moore 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>
2005-04-19 06:49:35 +04:00
if (!table_desc->pointer) {
if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
ACPI_TABLE_ORIGIN_MAPPED) {
table_desc->pointer =
acpi_os_map_memory(table_desc->address,
table_desc->length);
}
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)) {
/* Always calculate checksum, ignore bad checksum if requested */
status =
acpi_tb_verify_checksum(table_desc->pointer,
table_desc->length);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_add_table
*
* PARAMETERS: table_desc - Table descriptor
* table_index - Where the table index is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to add an ACPI table. It is used to
* dynamically load tables via the Load and load_table AML
* operators.
*
******************************************************************************/
acpi_status
acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
{
u32 i;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_add_table);
if (!table_desc->pointer) {
status = acpi_tb_verify_table(table_desc);
if (ACPI_FAILURE(status) || !table_desc->pointer) {
return_ACPI_STATUS(status);
}
}
/*
* Validate the incoming table signature.
*
* 1) Originally, we checked the table signature for "SSDT" or "PSDT".
* 2) We added support for OEMx tables, signature "OEM".
* 3) Valid tables were encountered with a null signature, so we just
* gave up on validating the signature, (05/2008).
* 4) We encountered non-AML tables such as the MADT, which caused
* interpreter errors and kernel faults. So now, we once again allow
* only "SSDT", "OEMx", and now, also a null signature. (05/2011).
*/
if ((table_desc->pointer->signature[0] != 0x00) &&
(!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT))
&& (ACPI_STRNCMP(table_desc->pointer->signature, "OEM", 3))) {
ACPI_BIOS_ERROR((AE_INFO,
"Table has invalid signature [%4.4s] (0x%8.8X), "
"must be SSDT or OEMx",
acpi_ut_valid_acpi_name(*(u32 *)table_desc->
pointer->
signature) ?
table_desc->pointer->signature : "????",
*(u32 *)table_desc->pointer->signature));
return_ACPI_STATUS(AE_BAD_SIGNATURE);
}
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Check if table is already registered */
for (i = 0; i < acpi_gbl_root_table_list.current_table_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;
}
}
/*
* Check for a table match on the entire table length,
* not just the header.
*/
if (table_desc->length !=
acpi_gbl_root_table_list.tables[i].length) {
continue;
}
if (ACPI_MEMCMP(table_desc->pointer,
acpi_gbl_root_table_list.tables[i].pointer,
acpi_gbl_root_table_list.tables[i].length)) {
continue;
}
/*
* Note: the current mechanism does not unregister a table if it is
* dynamically unloaded. The related namespace entries are deleted,
* but the table remains in the root table list.
*
* The assumption here is that the number of different tables that
* will be loaded is actually small, and there is minimal overhead
* in just keeping the table in case it is needed again.
*
* If this assumption changes in the future (perhaps on large
* machines with many table load/unload operations), tables will
* need to be unregistered when they are unloaded, and slots in the
* root table list should be reused when empty.
*/
/*
* Table is already registered.
* We can delete the table that was passed as a parameter.
*/
acpi_tb_delete_table(table_desc);
*table_index = i;
if (acpi_gbl_root_table_list.tables[i].
flags & ACPI_TABLE_IS_LOADED) {
/* Table is still loaded, this is an error */
status = AE_ALREADY_EXISTS;
goto release;
} else {
/* Table was unloaded, allow it to be reloaded */
table_desc->pointer =
acpi_gbl_root_table_list.tables[i].pointer;
table_desc->address =
acpi_gbl_root_table_list.tables[i].address;
status = AE_OK;
goto print_header;
}
}
/*
* ACPI Table Override:
* Allow the host to override dynamically loaded tables.
* NOTE: the table is fully mapped at this point, and the mapping will
* be deleted by tb_table_override if the table is actually overridden.
*/
(void)acpi_tb_table_override(table_desc->pointer, table_desc);
/* Add the table to the global root table list */
status = acpi_tb_store_table(table_desc->address, table_desc->pointer,
table_desc->length, table_desc->flags,
table_index);
if (ACPI_FAILURE(status)) {
goto release;
}
print_header:
acpi_tb_print_table_header(table_desc->address, table_desc->pointer);
release:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_table_override
*
* PARAMETERS: table_header - Header for the original table
* table_desc - Table descriptor initialized for the
* original table. May or may not be mapped.
*
* RETURN: Pointer to the entire new table. NULL if table not overridden.
* If overridden, installs the new table within the input table
* descriptor.
*
* DESCRIPTION: Attempt table override by calling the OSL override functions.
* Note: If the table is overridden, then the entire new table
* is mapped and returned by this function.
*
******************************************************************************/
struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header
*table_header,
struct acpi_table_desc
*table_desc)
{
acpi_status status;
struct acpi_table_header *new_table = NULL;
acpi_physical_address new_address = 0;
u32 new_table_length = 0;
u8 new_flags;
char *override_type;
/* (1) Attempt logical override (returns a logical address) */
status = acpi_os_table_override(table_header, &new_table);
if (ACPI_SUCCESS(status) && new_table) {
new_address = ACPI_PTR_TO_PHYSADDR(new_table);
new_table_length = new_table->length;
new_flags = ACPI_TABLE_ORIGIN_OVERRIDE;
override_type = "Logical";
goto finish_override;
}
/* (2) Attempt physical override (returns a physical address) */
status = acpi_os_physical_table_override(table_header,
&new_address,
&new_table_length);
if (ACPI_SUCCESS(status) && new_address && new_table_length) {
/* Map the entire new table */
new_table = acpi_os_map_memory(new_address, new_table_length);
if (!new_table) {
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
"%4.4s %p Attempted physical table override failed",
table_header->signature,
ACPI_CAST_PTR(void,
table_desc->address)));
return (NULL);
}
override_type = "Physical";
new_flags = ACPI_TABLE_ORIGIN_MAPPED;
goto finish_override;
}
return (NULL); /* There was no override */
finish_override:
ACPI_INFO((AE_INFO,
"%4.4s %p %s table override, new table: %p",
table_header->signature,
ACPI_CAST_PTR(void, table_desc->address),
override_type, new_table));
/* We can now unmap/delete the original table (if fully mapped) */
acpi_tb_delete_table(table_desc);
/* Setup descriptor for the new table */
table_desc->address = new_address;
table_desc->pointer = new_table;
table_desc->length = new_table_length;
table_desc->flags = new_flags;
return (new_table);
}
/*******************************************************************************
*
* 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;
u32 table_count;
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_ROOT_ALLOW_RESIZE)) {
ACPI_ERROR((AE_INFO,
"Resize of Root Table Array is not allowed"));
return_ACPI_STATUS(AE_SUPPORT);
}
/* Increase the Table Array size */
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
table_count = acpi_gbl_root_table_list.max_table_count;
} else {
table_count = acpi_gbl_root_table_list.current_table_count;
}
tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count +
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_size) table_count *
sizeof(struct acpi_table_desc));
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
ACPI_FREE(acpi_gbl_root_table_list.tables);
}
}
acpi_gbl_root_table_list.tables = tables;
acpi_gbl_root_table_list.max_table_count =
table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT;
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
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, u32 *table_index)
{
acpi_status status;
struct acpi_table_desc *new_table;
/* Ensure that there is room for the table in the Root Table List */
ACPICA 20050708 from Bob Moore <robert.moore@intel.com> The use of the CPU stack in the debug version of the subsystem has been considerably reduced. Previously, a debug structure was declared in every function that used the debug macros. This structure has been removed in favor of declaring the individual elements as parameters to the debug functions. This reduces the cumulative stack use during nested execution of ACPI function calls at the cost of a small increase in the code size of the debug version of the subsystem. With assistance from Alexey Starikovskiy and Len Brown. Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent headers to define a macro that will return the current function name at runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the compiler-dependent header, the function name is saved on the CPU stack (one pointer per function.) This mechanism is used because apparently there exists no standard ANSI-C defined macro that that returns the function name. Alexey Starikovskiy redesigned and reimplemented the "Owner ID" mechanism used to track namespace objects created/deleted by ACPI tables and control method execution. A bitmap is now used to allocate and free the IDs, thus solving the wraparound problem present in the previous implementation. The size of the namespace node descriptor was reduced by 2 bytes as a result. Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield flag definitions within the headers for the predefined ACPI tables. These have been replaced by UINT8_BIT in order to increase the code portability of the subsystem. If the use of UINT8 remains a problem, we may be forced to eliminate bitfields entirely because of a lack of portability. Alexey Starikovksiy enhanced the performance of acpi_ut_update_object_reference. This is a frequently used function and this improvement increases the performance of the entire subsystem. Alexey Starikovskiy fixed several possible memory leaks and the inverse - premature object deletion. Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-08 08:00:00 +04:00
if (acpi_gbl_root_table_list.current_table_count >=
acpi_gbl_root_table_list.max_table_count) {
status = acpi_tb_resize_root_table_list();
if (ACPI_FAILURE(status)) {
return (status);
}
ACPICA 20050708 from Bob Moore <robert.moore@intel.com> The use of the CPU stack in the debug version of the subsystem has been considerably reduced. Previously, a debug structure was declared in every function that used the debug macros. This structure has been removed in favor of declaring the individual elements as parameters to the debug functions. This reduces the cumulative stack use during nested execution of ACPI function calls at the cost of a small increase in the code size of the debug version of the subsystem. With assistance from Alexey Starikovskiy and Len Brown. Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent headers to define a macro that will return the current function name at runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the compiler-dependent header, the function name is saved on the CPU stack (one pointer per function.) This mechanism is used because apparently there exists no standard ANSI-C defined macro that that returns the function name. Alexey Starikovskiy redesigned and reimplemented the "Owner ID" mechanism used to track namespace objects created/deleted by ACPI tables and control method execution. A bitmap is now used to allocate and free the IDs, thus solving the wraparound problem present in the previous implementation. The size of the namespace node descriptor was reduced by 2 bytes as a result. Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield flag definitions within the headers for the predefined ACPI tables. These have been replaced by UINT8_BIT in order to increase the code portability of the subsystem. If the use of UINT8 remains a problem, we may be forced to eliminate bitfields entirely because of a lack of portability. Alexey Starikovksiy enhanced the performance of acpi_ut_update_object_reference. This is a frequently used function and this improvement increases the performance of the entire subsystem. Alexey Starikovskiy fixed several possible memory leaks and the inverse - premature object deletion. Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-08 08:00:00 +04:00
}
new_table =
&acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.
current_table_count];
/* Initialize added table */
new_table->address = address;
new_table->pointer = table;
new_table->length = length;
new_table->owner_id = 0;
new_table->flags = flags;
ACPI_MOVE_32_TO_32(&new_table->signature, table->signature);
*table_index = acpi_gbl_root_table_list.current_table_count;
acpi_gbl_root_table_list.current_table_count++;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_delete_table
*
* PARAMETERS: table_index - Table index
*
* RETURN: None
*
* DESCRIPTION: Delete one internal ACPI table
*
******************************************************************************/
void acpi_tb_delete_table(struct acpi_table_desc *table_desc)
{
/* Table must be mapped or allocated */
if (!table_desc->pointer) {
return;
}
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_MAPPED:
acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
break;
case ACPI_TABLE_ORIGIN_ALLOCATED:
ACPI_FREE(table_desc->pointer);
break;
/* Not mapped or allocated, there is nothing we can do */
default:
return;
}
table_desc->pointer = NULL;
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_terminate
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Delete all internal ACPI tables
*
******************************************************************************/
void acpi_tb_terminate(void)
{
u32 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.current_table_count; i++) {
acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[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_ROOT_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.current_table_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: Status
*
* DESCRIPTION: Delete all namespace objects created when this table was loaded.
*
******************************************************************************/
acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index)
{
acpi_owner_id owner_id;
acpi_status status;
ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner);
status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
/* The table index does not exist */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Get the owner ID for this table, used to delete namespace nodes */
owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id;
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
/*
* Need to acquire the namespace writer lock to prevent interference
* with any concurrent namespace walks. The interpreter must be
* released during the deletion since the acquisition of the deletion
* lock may block, and also since the execution of a namespace walk
* must be allowed to use the interpreter.
*/
(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock);
acpi_ns_delete_namespace_by_owner(owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock);
status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* 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(u32 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.current_table_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(u32 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.current_table_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(u32 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.current_table_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(u32 table_index)
{
u8 is_loaded = FALSE;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
is_loaded = (u8)
(acpi_gbl_root_table_list.tables[table_index].flags &
ACPI_TABLE_IS_LOADED);
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return (is_loaded);
}
ACPI: ACPICA 20060707 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers that do not allow the initialization of address pointers within packed structures - even though the hardware itself may support misaligned transfers. Some of the debug data structures are packed by default to minimize size. Added an error message for the case where acpi_os_get_thread_id() returns zero. A non-zero value is required by the core ACPICA code to ensure the proper operation of AML mutexes and recursive control methods. The DSDT is now the only ACPI table that determines whether the AML interpreter is in 32-bit or 64-bit mode. Not really a functional change, but the hooks for per-table 32/64 switching have been removed from the code. A clarification to the ACPI specification is forthcoming in ACPI 3.0B. Fixed a possible leak of an Owner ID in the error path of tbinstal.c acpi_tb_init_table_descriptor() and migrated all table OwnerID deletion to a single place in acpi_tb_uninstall_table() to correct possible leaks when using the acpi_tb_delete_tables_by_type() interface (with assistance from Lance Ortiz.) Fixed a problem with Serialized control methods where the semaphore associated with the method could be over-signaled after multiple method invocations. Fixed two issues with the locking of the internal namespace data structure. Both the Unload() operator and acpi_unload_table() interface now lock the namespace during the namespace deletion associated with the table unload (with assistance from Linn Crosetto.) Fixed problem reports (Valery Podrezov) integrated: - Eliminate unnecessary memory allocation for CreateXxxxField http://bugzilla.kernel.org/show_bug.cgi?id=5426 Fixed problem reports (Fiodor Suietov) integrated: - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) - On Address Space handler deletion, needless deactivation call (BZ 374) - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone (BZ 376) - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) - Minimum Length of RSDT should be validated (BZ 379) - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no Handler (BZ (380) - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded (BZ 381) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-08 04:44:38 +04:00
/*******************************************************************************
*
* 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(u32 table_index, u8 is_loaded)
{
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
if (is_loaded) {
acpi_gbl_root_table_list.tables[table_index].flags |=
ACPI_TABLE_IS_LOADED;
} else {
acpi_gbl_root_table_list.tables[table_index].flags &=
~ACPI_TABLE_IS_LOADED;
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}