_mali_osk_errcode_t _mali_ukk_wait_for_notification( _mali_uk_wait_for_notification_s *args )
{
_mali_osk_errcode_t err;
_mali_osk_notification_t * notification;
_mali_osk_notification_queue_t *queue;
/* check input */
MALI_DEBUG_ASSERT_POINTER(args);
MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS);
queue = (_mali_osk_notification_queue_t *)mali_kernel_session_manager_slot_get(args->ctx, mali_subsystem_core_id);
/* if the queue does not exist we're currently shutting down */
if (NULL == queue)
{
MALI_DEBUG_PRINT(1, ("No notification queue registered with the session. Asking userspace to stop querying\n"));
args->type = _MALI_NOTIFICATION_CORE_SHUTDOWN_IN_PROGRESS;
MALI_SUCCESS;
}
/* receive a notification, might sleep */
err = _mali_osk_notification_queue_receive(queue, ¬ification);
if (_MALI_OSK_ERR_OK != err)
{
MALI_ERROR(err); /* errcode returned, pass on to caller */
}
/* copy the buffer to the user */
args->type = (_mali_uk_notification_type)notification->notification_type;
_mali_osk_memcpy(&args->data, notification->result_buffer, notification->result_buffer_size);
/* finished with the notification */
_mali_osk_notification_delete( notification );
MALI_SUCCESS; /* all ok */
}
void pmm_fatal_reset( _mali_pmm_internal_state_t *pmm )
{
_mali_osk_errcode_t err = _MALI_OSK_ERR_OK;
_mali_osk_notification_t *msg = NULL;
mali_pmm_status status;
MALI_DEBUG_ASSERT_POINTER(pmm);
MALIPMM_DEBUG_PRINT( ("PMM: Fatal Reset called") );
MALI_DEBUG_ASSERT( pmm->status != MALI_PMM_STATUS_OFF );
/* Reset the common status */
pmm->waiting = 0;
pmm->missed = 0;
pmm->fatal_power_err = MALI_FALSE;
pmm->no_events = 0;
pmm->check_policy = MALI_FALSE;
pmm->cores_pend_down = 0;
pmm->cores_pend_up = 0;
pmm->cores_ack_down = 0;
pmm->cores_ack_up = 0;
pmm->is_dvfs_active = 0;
#if MALI_PMM_TRACE
pmm->messages_sent = 0;
pmm->messages_received = 0;
pmm->imessages_sent = 0;
pmm->imessages_received = 0;
MALI_PRINT( ("PMM Trace: *** Fatal reset occurred ***") );
#endif
/* Set that we are unavailable whilst resetting */
pmm->state = MALI_PMM_STATE_UNAVAILABLE;
status = pmm->status;
pmm->status = MALI_PMM_STATUS_OFF;
/* We want all cores powered */
pmm->cores_powered = pmm->cores_registered;
/* The cores may not be idle, but this state will be rectified later */
pmm->cores_idle = pmm->cores_registered;
/* So power on any cores that are registered */
if( pmm->cores_registered != 0 )
{
int n;
volatile mali_pmm_core_mask *pregistered = &(pmm->cores_registered);
#if !MALI_PMM_NO_PMU
err = mali_platform_powerup( pmm->cores_registered );
#endif
if( err != _MALI_OSK_ERR_OK )
{
/* This is very bad as we can't even be certain the cores are now
* powered up
*/
MALI_PRINT_ERROR( ("PMM: Failed to perform PMM reset!\n") );
/* TBD driver exit? */
}
for( n = SIZEOF_CORES_LIST-1; n >= 0; n-- )
{
if( (cores_list[n] & (*pregistered)) != 0 )
{
MALI_PMM_UNLOCK(pmm);
/* Core is now active - so try putting it in the idle queue */
err = mali_core_signal_power_up( cores_list[n], MALI_FALSE );
MALI_PMM_LOCK(pmm);
/* We either succeeded, or we were not off anyway, or we have
* just be deregistered
*/
MALI_DEBUG_ASSERT( (err == _MALI_OSK_ERR_OK) ||
(err == _MALI_OSK_ERR_BUSY) ||
(err == _MALI_OSK_ERR_FAULT &&
(*pregistered & cores_list[n]) == 0) );
}
}
}
/* Unblock any pending OS event */
if( status == MALI_PMM_STATUS_OS_POWER_UP )
{
/* Get the OS data and respond to the power up */
_mali_osk_pmm_power_up_done( pmm_retrieve_os_event_data( pmm ) );
}
if( status == MALI_PMM_STATUS_OS_POWER_DOWN )
{
/* Get the OS data and respond to the power down
* NOTE: We are not powered down at this point due to power problems,
* so we are lying to the system, but something bad has already
* happened and we are trying unstick things
* TBD - Add busy loop to power down cores?
*/
_mali_osk_pmm_power_down_done( pmm_retrieve_os_event_data( pmm ) );
}
/* Purge the event queues */
do
{
if( _mali_osk_notification_queue_receive( pmm->iqueue, 0, &msg ) == _MALI_OSK_ERR_OK )
{
_mali_osk_notification_delete ( msg );
break;
}
} while (MALI_TRUE);
do
{
if( _mali_osk_notification_queue_receive( pmm->queue, 0, &msg ) == _MALI_OSK_ERR_OK )
{
_mali_osk_notification_delete ( msg );
break;
}
} while (MALI_TRUE);
/* Return status/state to normal */
pmm->status = MALI_PMM_STATUS_IDLE;
pmm_update_system_state(pmm);
}
