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authorLen Brown <len.brown@intel.com>2009-01-09 06:13:17 +0100
committerLen Brown <len.brown@intel.com>2009-01-09 09:30:47 +0100
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/executer/exmutex.c
parentACPICA: delete utcache.c (diff)
downloadlinux-95b482a8d31116f3f5c2a5089569393234d06385.tar.xz
linux-95b482a8d31116f3f5c2a5089569393234d06385.zip
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/executer/exmutex.c')
-rw-r--r--drivers/acpi/executer/exmutex.c474
1 files changed, 0 insertions, 474 deletions
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c
deleted file mode 100644
index f86bcee8d656..000000000000
--- a/drivers/acpi/executer/exmutex.c
+++ /dev/null
@@ -1,474 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: exmutex - ASL Mutex Acquire/Release functions
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, 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 <acpi/accommon.h>
-#include <acpi/acinterp.h>
-#include <acpi/acevents.h>
-
-#define _COMPONENT ACPI_EXECUTER
-ACPI_MODULE_NAME("exmutex")
-
-/* Local prototypes */
-static void
-acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
- struct acpi_thread_state *thread);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_unlink_mutex
- *
- * PARAMETERS: obj_desc - The mutex to be unlinked
- *
- * RETURN: None
- *
- * DESCRIPTION: Remove a mutex from the "AcquiredMutex" list
- *
- ******************************************************************************/
-
-void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc)
-{
- struct acpi_thread_state *thread = obj_desc->mutex.owner_thread;
-
- if (!thread) {
- return;
- }
-
- /* Doubly linked list */
-
- if (obj_desc->mutex.next) {
- (obj_desc->mutex.next)->mutex.prev = obj_desc->mutex.prev;
- }
-
- if (obj_desc->mutex.prev) {
- (obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next;
- } else {
- thread->acquired_mutex_list = obj_desc->mutex.next;
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_link_mutex
- *
- * PARAMETERS: obj_desc - The mutex to be linked
- * Thread - Current executing thread object
- *
- * RETURN: None
- *
- * DESCRIPTION: Add a mutex to the "AcquiredMutex" list for this walk
- *
- ******************************************************************************/
-
-static void
-acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
- struct acpi_thread_state *thread)
-{
- union acpi_operand_object *list_head;
-
- list_head = thread->acquired_mutex_list;
-
- /* This object will be the first object in the list */
-
- obj_desc->mutex.prev = NULL;
- obj_desc->mutex.next = list_head;
-
- /* Update old first object to point back to this object */
-
- if (list_head) {
- list_head->mutex.prev = obj_desc;
- }
-
- /* Update list head */
-
- thread->acquired_mutex_list = obj_desc;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_acquire_mutex_object
- *
- * PARAMETERS: time_desc - Timeout in milliseconds
- * obj_desc - Mutex object
- * Thread - Current thread state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Acquire an AML mutex, low-level interface. Provides a common
- * path that supports multiple acquires by the same thread.
- *
- * MUTEX: Interpreter must be locked
- *
- * NOTE: This interface is called from three places:
- * 1) From acpi_ex_acquire_mutex, via an AML Acquire() operator
- * 2) From acpi_ex_acquire_global_lock when an AML Field access requires the
- * global lock
- * 3) From the external interface, acpi_acquire_global_lock
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_acquire_mutex_object(u16 timeout,
- union acpi_operand_object *obj_desc,
- acpi_thread_id thread_id)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex_object, obj_desc);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Support for multiple acquires by the owning thread */
-
- if (obj_desc->mutex.thread_id == thread_id) {
- /*
- * The mutex is already owned by this thread, just increment the
- * acquisition depth
- */
- obj_desc->mutex.acquisition_depth++;
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Acquire the mutex, wait if necessary. Special case for Global Lock */
-
- if (obj_desc == acpi_gbl_global_lock_mutex) {
- status = acpi_ev_acquire_global_lock(timeout);
- } else {
- status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
- timeout);
- }
-
- if (ACPI_FAILURE(status)) {
-
- /* Includes failure from a timeout on time_desc */
-
- return_ACPI_STATUS(status);
- }
-
- /* Acquired the mutex: update mutex object */
-
- obj_desc->mutex.thread_id = thread_id;
- obj_desc->mutex.acquisition_depth = 1;
- obj_desc->mutex.original_sync_level = 0;
- obj_desc->mutex.owner_thread = NULL; /* Used only for AML Acquire() */
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_acquire_mutex
- *
- * PARAMETERS: time_desc - Timeout integer
- * obj_desc - Mutex object
- * walk_state - Current method execution state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Acquire an AML mutex
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
- union acpi_operand_object *obj_desc,
- struct acpi_walk_state *walk_state)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex, obj_desc);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Must have a valid thread ID */
-
- if (!walk_state->thread) {
- ACPI_ERROR((AE_INFO,
- "Cannot acquire Mutex [%4.4s], null thread info",
- acpi_ut_get_node_name(obj_desc->mutex.node)));
- return_ACPI_STATUS(AE_AML_INTERNAL);
- }
-
- /*
- * Current sync level must be less than or equal to the sync level of the
- * mutex. This mechanism provides some deadlock prevention
- */
- if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
- ACPI_ERROR((AE_INFO,
- "Cannot acquire Mutex [%4.4s], current SyncLevel is too large (%d)",
- acpi_ut_get_node_name(obj_desc->mutex.node),
- walk_state->thread->current_sync_level));
- return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
- }
-
- status = acpi_ex_acquire_mutex_object((u16) time_desc->integer.value,
- obj_desc,
- walk_state->thread->thread_id);
- if (ACPI_SUCCESS(status) && obj_desc->mutex.acquisition_depth == 1) {
-
- /* Save Thread object, original/current sync levels */
-
- obj_desc->mutex.owner_thread = walk_state->thread;
- obj_desc->mutex.original_sync_level =
- walk_state->thread->current_sync_level;
- walk_state->thread->current_sync_level =
- obj_desc->mutex.sync_level;
-
- /* Link the mutex to the current thread for force-unlock at method exit */
-
- acpi_ex_link_mutex(obj_desc, walk_state->thread);
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_release_mutex_object
- *
- * PARAMETERS: obj_desc - The object descriptor for this op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Release a previously acquired Mutex, low level interface.
- * Provides a common path that supports multiple releases (after
- * previous multiple acquires) by the same thread.
- *
- * MUTEX: Interpreter must be locked
- *
- * NOTE: This interface is called from three places:
- * 1) From acpi_ex_release_mutex, via an AML Acquire() operator
- * 2) From acpi_ex_release_global_lock when an AML Field access requires the
- * global lock
- * 3) From the external interface, acpi_release_global_lock
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_release_mutex_object(union acpi_operand_object *obj_desc)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE(ex_release_mutex_object);
-
- if (obj_desc->mutex.acquisition_depth == 0) {
- return (AE_NOT_ACQUIRED);
- }
-
- /* Match multiple Acquires with multiple Releases */
-
- obj_desc->mutex.acquisition_depth--;
- if (obj_desc->mutex.acquisition_depth != 0) {
-
- /* Just decrement the depth and return */
-
- return_ACPI_STATUS(AE_OK);
- }
-
- if (obj_desc->mutex.owner_thread) {
-
- /* Unlink the mutex from the owner's list */
-
- acpi_ex_unlink_mutex(obj_desc);
- obj_desc->mutex.owner_thread = NULL;
- }
-
- /* Release the mutex, special case for Global Lock */
-
- if (obj_desc == acpi_gbl_global_lock_mutex) {
- status = acpi_ev_release_global_lock();
- } else {
- acpi_os_release_mutex(obj_desc->mutex.os_mutex);
- }
-
- /* Clear mutex info */
-
- obj_desc->mutex.thread_id = NULL;
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_release_mutex
- *
- * PARAMETERS: obj_desc - The object descriptor for this op
- * walk_state - Current method execution state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Release a previously acquired Mutex.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
- struct acpi_walk_state *walk_state)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE(ex_release_mutex);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* The mutex must have been previously acquired in order to release it */
-
- if (!obj_desc->mutex.owner_thread) {
- ACPI_ERROR((AE_INFO,
- "Cannot release Mutex [%4.4s], not acquired",
- acpi_ut_get_node_name(obj_desc->mutex.node)));
- return_ACPI_STATUS(AE_AML_MUTEX_NOT_ACQUIRED);
- }
-
- /*
- * The Mutex is owned, but this thread must be the owner.
- * Special case for Global Lock, any thread can release
- */
- if ((obj_desc->mutex.owner_thread->thread_id !=
- walk_state->thread->thread_id)
- && (obj_desc != acpi_gbl_global_lock_mutex)) {
- ACPI_ERROR((AE_INFO,
- "Thread %lX cannot release Mutex [%4.4s] acquired by thread %lX",
- (unsigned long)walk_state->thread->thread_id,
- acpi_ut_get_node_name(obj_desc->mutex.node),
- (unsigned long)obj_desc->mutex.owner_thread->
- thread_id));
- return_ACPI_STATUS(AE_AML_NOT_OWNER);
- }
-
- /* Must have a valid thread ID */
-
- if (!walk_state->thread) {
- ACPI_ERROR((AE_INFO,
- "Cannot release Mutex [%4.4s], null thread info",
- acpi_ut_get_node_name(obj_desc->mutex.node)));
- return_ACPI_STATUS(AE_AML_INTERNAL);
- }
-
- /*
- * The sync level of the mutex must be less than or equal to the current
- * sync level
- */
- if (obj_desc->mutex.sync_level > walk_state->thread->current_sync_level) {
- ACPI_ERROR((AE_INFO,
- "Cannot release Mutex [%4.4s], SyncLevel mismatch: mutex %d current %d",
- acpi_ut_get_node_name(obj_desc->mutex.node),
- obj_desc->mutex.sync_level,
- walk_state->thread->current_sync_level));
- return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
- }
-
- status = acpi_ex_release_mutex_object(obj_desc);
-
- if (obj_desc->mutex.acquisition_depth == 0) {
-
- /* Restore the original sync_level */
-
- walk_state->thread->current_sync_level =
- obj_desc->mutex.original_sync_level;
- }
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_release_all_mutexes
- *
- * PARAMETERS: Thread - Current executing thread object
- *
- * RETURN: Status
- *
- * DESCRIPTION: Release all mutexes held by this thread
- *
- * NOTE: This function is called as the thread is exiting the interpreter.
- * Mutexes are not released when an individual control method is exited, but
- * only when the parent thread actually exits the interpreter. This allows one
- * method to acquire a mutex, and a different method to release it, as long as
- * this is performed underneath a single parent control method.
- *
- ******************************************************************************/
-
-void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread)
-{
- union acpi_operand_object *next = thread->acquired_mutex_list;
- union acpi_operand_object *obj_desc;
-
- ACPI_FUNCTION_ENTRY();
-
- /* Traverse the list of owned mutexes, releasing each one */
-
- while (next) {
- obj_desc = next;
- next = obj_desc->mutex.next;
-
- obj_desc->mutex.prev = NULL;
- obj_desc->mutex.next = NULL;
- obj_desc->mutex.acquisition_depth = 0;
-
- /* Release the mutex, special case for Global Lock */
-
- if (obj_desc == acpi_gbl_global_lock_mutex) {
-
- /* Ignore errors */
-
- (void)acpi_ev_release_global_lock();
- } else {
- acpi_os_release_mutex(obj_desc->mutex.os_mutex);
- }
-
- /* Mark mutex unowned */
-
- obj_desc->mutex.owner_thread = NULL;
- obj_desc->mutex.thread_id = NULL;
-
- /* Update Thread sync_level (Last mutex is the important one) */
-
- thread->current_sync_level =
- obj_desc->mutex.original_sync_level;
- }
-}