*****************************************************************************/
/*
- * Copyright (C) 2000 - 2004, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acinterp.h>
#include <acpi/acevents.h>
#define _COMPONENT ACPI_EXECUTER
- ACPI_MODULE_NAME ("exsystem")
-
+ACPI_MODULE_NAME("exsystem")
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_semaphore
*
- * PARAMETERS: Semaphore - OSD semaphore to wait on
- * Timeout - Max time to wait
+ * PARAMETERS: Semaphore - Semaphore to wait on
+ * Timeout - Max time to wait
*
* RETURN: Status
*
* 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_status status;
+ acpi_status status2;
+
+ ACPI_FUNCTION_TRACE(ex_system_wait_semaphore);
+
+ 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();
+
+ status = acpi_os_wait_semaphore(semaphore, 1, timeout);
- ACPI_FUNCTION_TRACE ("ex_system_wait_semaphore");
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "*** Thread awake after blocking, %s\n",
+ acpi_format_exception(status)));
+
+ /* Reacquire the interpreter */
+ status2 = acpi_ex_enter_interpreter();
+ if (ACPI_FAILURE(status2)) {
- status = acpi_os_wait_semaphore (semaphore, 1, 0);
- if (ACPI_SUCCESS (status)) {
- return_ACPI_STATUS (status);
+ /* Report fatal error, could not acquire interpreter */
+
+ return_ACPI_STATUS(status2);
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * 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_status status2;
+
+ 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_exit_interpreter ();
+ acpi_ex_exit_interpreter();
- status = acpi_os_wait_semaphore (semaphore, 1, timeout);
+ status = acpi_os_acquire_mutex(mutex, timeout);
- ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "*** Thread awake after blocking, %s\n",
- acpi_format_exception (status)));
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "*** Thread awake after blocking, %s\n",
+ acpi_format_exception(status)));
/* Reacquire the interpreter */
- status2 = acpi_ex_enter_interpreter ();
- if (ACPI_FAILURE (status2)) {
+ status2 = acpi_ex_enter_interpreter();
+ if (ACPI_FAILURE(status2)) {
+
/* Report fatal error, could not acquire interpreter */
- return_ACPI_STATUS (status2);
+ return_ACPI_STATUS(status2);
}
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_do_stall
*
- * PARAMETERS: how_long - The amount of time to stall,
- * in microseconds
+ * PARAMETERS: how_long - The amount of time to stall,
+ * in microseconds
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_ex_system_do_stall (
- u32 how_long)
+acpi_status acpi_ex_system_do_stall(u32 how_long)
{
- acpi_status status = AE_OK;
-
+ acpi_status status = AE_OK;
- ACPI_FUNCTION_ENTRY ();
+ ACPI_FUNCTION_ENTRY();
-
- if (how_long > 255) /* 255 microseconds */ {
+ if (how_long > 255) { /* 255 microseconds */
/*
* Longer than 255 usec, this is an error
*
* (ACPI specifies 100 usec as max, but this gives some slack in
* order to support existing BIOSs)
*/
- ACPI_REPORT_ERROR (("Stall: Time parameter is too large (%d)\n", how_long));
+ ACPI_ERROR((AE_INFO, "Time parameter is too large (%d)",
+ how_long));
status = AE_AML_OPERAND_VALUE;
- }
- else {
- acpi_os_stall (how_long);
+ } else {
+ acpi_os_stall(how_long);
}
return (status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_do_suspend
*
- * PARAMETERS: how_long - The amount of time to suspend,
- * in milliseconds
+ * PARAMETERS: how_long - The amount of time to suspend,
+ * in milliseconds
*
* RETURN: None
*
*
******************************************************************************/
-acpi_status
-acpi_ex_system_do_suspend (
- acpi_integer how_long)
+acpi_status acpi_ex_system_do_suspend(acpi_integer how_long)
{
- acpi_status status;
-
-
- ACPI_FUNCTION_ENTRY ();
+ acpi_status status;
+ ACPI_FUNCTION_ENTRY();
/* Since this thread will sleep, we must release the interpreter */
- acpi_ex_exit_interpreter ();
+ acpi_ex_exit_interpreter();
- acpi_os_sleep (how_long);
+ acpi_os_sleep(how_long);
/* And now we must get the interpreter again */
- status = acpi_ex_enter_interpreter ();
+ 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
+ * PARAMETERS: time_desc - Maximum time to wait for the mutex
+ * obj_desc - The object descriptor for this op
*
* RETURN: Status
*
******************************************************************************/
acpi_status
-acpi_ex_system_acquire_mutex (
- union acpi_operand_object *time_desc,
- union acpi_operand_object *obj_desc)
+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);
+ acpi_status status = AE_OK;
+ ACPI_FUNCTION_TRACE_PTR(ex_system_acquire_mutex, obj_desc);
if (!obj_desc) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ 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);
+ /* Support for the _GL_ Mutex object -- go get the global lock */
+
+ if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
+ 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);
+ status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
+ (u16) time_desc->integer.value);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_release_mutex
*
- * PARAMETERS: *obj_desc - The object descriptor for this op
+ * PARAMETERS: obj_desc - The object descriptor for this op
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_ex_system_release_mutex (
- union acpi_operand_object *obj_desc)
+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");
+ acpi_status status = AE_OK;
+ ACPI_FUNCTION_TRACE(ex_system_release_mutex);
if (!obj_desc) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ 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);
+ /* Support for the _GL_ Mutex object -- release the global lock */
+
+ if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
+ 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_os_release_mutex(obj_desc->mutex.os_mutex);
+ return_ACPI_STATUS(AE_OK);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_signal_event
*
- * PARAMETERS: *obj_desc - The object descriptor for this op
+ * PARAMETERS: obj_desc - The object descriptor for this op
*
- * RETURN: AE_OK
+ * RETURN: Status
*
* DESCRIPTION: Provides an access point to perform synchronization operations
* within the AML.
*
******************************************************************************/
-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_status status = AE_OK;
+ 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);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_event
*
- * PARAMETERS: *time_desc - The 'time to delay' object descriptor
- * *obj_desc - The object descriptor for this op
+ * PARAMETERS: time_desc - The 'time to delay' object descriptor
+ * obj_desc - The object descriptor for this op
*
* RETURN: Status
*
******************************************************************************/
acpi_status
-acpi_ex_system_wait_event (
- union acpi_operand_object *time_desc,
- union acpi_operand_object *obj_desc)
+acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
+ union acpi_operand_object *obj_desc)
{
- acpi_status status = AE_OK;
-
-
- ACPI_FUNCTION_TRACE ("ex_system_wait_event");
+ acpi_status status = AE_OK;
+ ACPI_FUNCTION_TRACE(ex_system_wait_event);
if (obj_desc) {
- status = acpi_ex_system_wait_semaphore (obj_desc->event.semaphore,
- (u16) time_desc->integer.value);
+ status =
+ acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore,
+ (u16) time_desc->integer.
+ value);
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_reset_event
*
- * PARAMETERS: *obj_desc - The object descriptor for this op
+ * PARAMETERS: obj_desc - The object descriptor for this op
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_ex_system_reset_event (
- union acpi_operand_object *obj_desc)
+acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
{
- acpi_status status = AE_OK;
- void *temp_semaphore;
-
-
- ACPI_FUNCTION_ENTRY ();
+ acpi_status status = AE_OK;
+ acpi_semaphore temp_semaphore;
+ ACPI_FUNCTION_ENTRY();
/*
* We are going to simply delete the existing semaphore and
* create a new one!
*/
- 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;
+ status =
+ acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore);
+ if (ACPI_SUCCESS(status)) {
+ (void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore);
+ obj_desc->event.os_semaphore = temp_semaphore;
}
return (status);
}
-