*****************************************************************************/
/*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*
* DESCRIPTION: Implements a semaphore wait with a check to see if the
* semaphore is available immediately. If it is not, the
- * interpreter is released.
+ * interpreter is released before waiting.
*
******************************************************************************/
-acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
+acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout)
{
acpi_status status;
- acpi_status status2;
- ACPI_FUNCTION_TRACE("ex_system_wait_semaphore");
+ ACPI_FUNCTION_TRACE(ex_system_wait_semaphore);
- status = acpi_os_wait_semaphore(semaphore, 1, 0);
+ status = acpi_os_wait_semaphore(semaphore, 1, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
if (status == AE_TIME) {
+
/* We must wait, so unlock the interpreter */
- acpi_ex_exit_interpreter();
+ acpi_ex_relinquish_interpreter();
status = acpi_os_wait_semaphore(semaphore, 1, timeout);
/* Reacquire the interpreter */
- status2 = acpi_ex_enter_interpreter();
- if (ACPI_FAILURE(status2)) {
- /* Report fatal error, could not acquire interpreter */
+ acpi_ex_reacquire_interpreter();
+ }
+
+ return_ACPI_STATUS(status);
+}
- return_ACPI_STATUS(status2);
- }
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_system_wait_mutex
+ *
+ * PARAMETERS: Mutex - Mutex to wait on
+ * Timeout - Max time to wait
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Implements a mutex wait with a check to see if the
+ * mutex is available immediately. If it is not, the
+ * interpreter is released before waiting.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(ex_system_wait_mutex);
+
+ status = acpi_os_acquire_mutex(mutex, ACPI_DO_NOT_WAIT);
+ if (ACPI_SUCCESS(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ if (status == AE_TIME) {
+
+ /* We must wait, so unlock the interpreter */
+
+ acpi_ex_relinquish_interpreter();
+
+ status = acpi_os_acquire_mutex(mutex, timeout);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "*** Thread awake after blocking, %s\n",
+ acpi_format_exception(status)));
+
+ /* Reacquire the interpreter */
+
+ acpi_ex_reacquire_interpreter();
}
return_ACPI_STATUS(status);
acpi_status acpi_ex_system_do_suspend(acpi_integer how_long)
{
- acpi_status status;
-
ACPI_FUNCTION_ENTRY();
/* Since this thread will sleep, we must release the interpreter */
- acpi_ex_exit_interpreter();
+ acpi_ex_relinquish_interpreter();
acpi_os_sleep(how_long);
/* And now we must get the interpreter again */
- status = acpi_ex_enter_interpreter();
- return (status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_system_acquire_mutex
- *
- * PARAMETERS: time_desc - The 'time to delay' object descriptor
- * obj_desc - The object descriptor for this op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Provides an access point to perform synchronization operations
- * within the AML. This function will cause a lock to be generated
- * for the Mutex pointed to by obj_desc.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_system_acquire_mutex(union acpi_operand_object * time_desc,
- union acpi_operand_object * obj_desc)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE_PTR("ex_system_acquire_mutex", obj_desc);
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Support for the _GL_ Mutex object -- go get the global lock */
-
- if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
- status =
- acpi_ev_acquire_global_lock((u16) time_desc->integer.value);
- return_ACPI_STATUS(status);
- }
-
- status = acpi_ex_system_wait_semaphore(obj_desc->mutex.semaphore,
- (u16) time_desc->integer.value);
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_system_release_mutex
- *
- * PARAMETERS: obj_desc - The object descriptor for this op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Provides an access point to perform synchronization operations
- * within the AML. This operation is a request to release a
- * previously acquired Mutex. If the Mutex variable is set then
- * it will be decremented.
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE("ex_system_release_mutex");
-
- if (!obj_desc) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /* Support for the _GL_ Mutex object -- release the global lock */
-
- if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
- status = acpi_ev_release_global_lock();
- return_ACPI_STATUS(status);
- }
-
- status = acpi_os_signal_semaphore(obj_desc->mutex.semaphore, 1);
- return_ACPI_STATUS(status);
+ acpi_ex_reacquire_interpreter();
+ return (AE_OK);
}
/*******************************************************************************
*
******************************************************************************/
-acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc)
+acpi_status acpi_ex_system_signal_event(union acpi_operand_object * obj_desc)
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("ex_system_signal_event");
+ ACPI_FUNCTION_TRACE(ex_system_signal_event);
if (obj_desc) {
- status = acpi_os_signal_semaphore(obj_desc->event.semaphore, 1);
+ status =
+ acpi_os_signal_semaphore(obj_desc->event.os_semaphore, 1);
}
return_ACPI_STATUS(status);
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("ex_system_wait_event");
+ ACPI_FUNCTION_TRACE(ex_system_wait_event);
if (obj_desc) {
status =
- acpi_ex_system_wait_semaphore(obj_desc->event.semaphore,
+ acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore,
(u16) time_desc->integer.
value);
}
acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
- void *temp_semaphore;
+ acpi_semaphore temp_semaphore;
ACPI_FUNCTION_ENTRY();
status =
acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore);
if (ACPI_SUCCESS(status)) {
- (void)acpi_os_delete_semaphore(obj_desc->event.semaphore);
- obj_desc->event.semaphore = temp_semaphore;
+ (void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore);
+ obj_desc->event.os_semaphore = temp_semaphore;
}
return (status);
projects / linux-2.6-omap-h63xx.git / blobdiff