diff options
Diffstat (limited to 'drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/pmm/mali_pmm_policy_jobcontrol.c')
| -rw-r--r-- | drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/pmm/mali_pmm_policy_jobcontrol.c | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/pmm/mali_pmm_policy_jobcontrol.c b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/pmm/mali_pmm_policy_jobcontrol.c new file mode 100644 index 00000000000..8450bd722f4 --- /dev/null +++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/pmm/mali_pmm_policy_jobcontrol.c @@ -0,0 +1,461 @@ +/* + * Copyright (C) 2010-2011 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained from Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/** + * @file mali_pmm_policy_jobcontrol.c + * Implementation of the power management module policy - job control + */ + +#if USING_MALI_PMM + +#include "mali_ukk.h" +#include "mali_kernel_common.h" +#include "mali_platform.h" + +#include "mali_pmm.h" +#include "mali_pmm_system.h" +#include "mali_pmm_state.h" +#include "mali_pmm_policy.h" +#include "mali_pmm_policy_jobcontrol.h" + +typedef struct _pmm_policy_data_job_control +{ + _pmm_policy_timer_t latency; /**< Latency timeout timer for all cores */ + u32 core_active_start; /**< Last time a core was set to active */ + u32 timeout; /**< Timeout in ticks for latency timer */ +} _pmm_policy_data_job_control_t; + + +/* @ brief Local data for this policy + */ +static _pmm_policy_data_job_control_t *data_job_control = NULL; + +/* @brief Set up the timeout if it hasn't already been set and if there are active cores */ +static void job_control_timeout_setup( _mali_pmm_internal_state_t *pmm, _pmm_policy_timer_t *pptimer ) +{ + MALI_DEBUG_ASSERT_POINTER(pmm); + MALI_DEBUG_ASSERT_POINTER(pptimer); + + /* Do we have an inactivity time out and some powered cores? */ + if( pptimer->timeout > 0 && pmm->cores_powered != 0 ) + { + /* Is the system idle and all the powered cores are idle? */ + if( pmm->status == MALI_PMM_STATUS_IDLE && pmm->cores_idle == pmm->cores_powered ) + { + if( pmm_policy_timer_start(pptimer) ) + { + MALIPMM_DEBUG_PRINT( ("PMM policy - Job control: Setting in-activity latency timer\n") ); + } + } + else + { + /* We are not idle so there is no need for an inactivity timer + */ + if( pmm_policy_timer_stop(pptimer) ) + { + MALIPMM_DEBUG_PRINT( ("PMM policy - Job control: Removing in-activity latency timer\n") ); + } + } + } +} + +/* @brief Check the validity of the timeout - and if there is one set */ +static mali_bool job_control_timeout_valid( _mali_pmm_internal_state_t *pmm, _pmm_policy_timer_t *pptimer, u32 timer_start ) +{ + MALI_DEBUG_ASSERT_POINTER(pmm); + MALI_DEBUG_ASSERT_POINTER(pptimer); + + /* Not a valid timer! */ + if( pptimer->timeout == 0 ) return MALI_FALSE; + + /* Are some cores powered and are they all idle? */ + if( (pmm->cores_powered != 0) && (pmm->cores_idle == pmm->cores_powered) ) + { + /* Has latency timeout started after the last core was active? */ + if( pmm_policy_timer_valid( timer_start, data_job_control->core_active_start ) ) + { + return MALI_TRUE; + } + else + { + MALIPMM_DEBUG_PRINT( ("PMM: In-activity latency time out ignored - out of date\n") ); + } + } + else + { + if( pmm->cores_powered == 0 ) + { + MALIPMM_DEBUG_PRINT( ("PMM: In-activity latency time out ignored - cores already off\n") ); + } + else + { + MALIPMM_DEBUG_PRINT( ("PMM: In-activity latency time out ignored - cores active\n") ); + } + } + + return MALI_FALSE; +} + +_mali_osk_errcode_t pmm_policy_init_job_control( _mali_pmm_internal_state_t *pmm ) +{ + _mali_osk_errcode_t err; + MALI_DEBUG_ASSERT_POINTER( pmm ); + MALI_DEBUG_ASSERT( data_job_control == NULL ); + + data_job_control = (_pmm_policy_data_job_control_t *) _mali_osk_malloc(sizeof(*data_job_control)); + MALI_CHECK_NON_NULL( data_job_control, _MALI_OSK_ERR_NOMEM ); + + data_job_control->core_active_start = _mali_osk_time_tickcount(); + data_job_control->timeout = MALI_PMM_POLICY_JOBCONTROL_INACTIVITY_TIMEOUT; + + err = pmm_policy_timer_init( &data_job_control->latency, data_job_control->timeout, MALI_PMM_EVENT_TIMEOUT ); + if( err != _MALI_OSK_ERR_OK ) + { + _mali_osk_free( data_job_control ); + data_job_control = NULL; + return err; + } + + /* Start the latency timeout */ + job_control_timeout_setup( pmm, &data_job_control->latency ); + + MALI_SUCCESS; +} + +void pmm_policy_term_job_control(void) +{ + if( data_job_control != NULL ) + { + pmm_policy_timer_term( &data_job_control->latency ); + _mali_osk_free( data_job_control ); + data_job_control = NULL; + } +} + +static void pmm_policy_job_control_job_queued( _mali_pmm_internal_state_t *pmm ) +{ + mali_pmm_core_mask cores; + mali_pmm_core_mask cores_subset; + + /* Make sure that all cores are powered in this + * simple policy + */ + cores = pmm->cores_registered; + cores_subset = pmm_cores_to_power_up( pmm, cores ); + if( cores_subset != 0 ) + { + /* There are some cores that need powering up */ + if( !pmm_invoke_power_up( pmm ) ) + { + /* Need to wait until finished */ + pmm->status = MALI_PMM_STATUS_POLICY_POWER_UP; + } + } +} + +_mali_osk_errcode_t pmm_policy_process_job_control( _mali_pmm_internal_state_t *pmm, mali_pmm_message_t *event ) +{ + mali_pmm_core_mask cores; + mali_pmm_core_mask cores_subset; + MALI_DEBUG_ASSERT_POINTER(pmm); + MALI_DEBUG_ASSERT_POINTER(event); + MALI_DEBUG_ASSERT_POINTER(data_job_control); + + MALIPMM_DEBUG_PRINT( ("PMM: Job control policy process start - status=%d\n", pmm->status) ); + + /* Mainly the data is the cores */ + cores = pmm_cores_from_event_data( pmm, event ); + +#if MALI_STATE_TRACKING + pmm->mali_last_pmm_status = pmm->status; +#endif /* MALI_STATE_TRACKING */ + + switch( pmm->status ) + { + /**************** IDLE ****************/ + case MALI_PMM_STATUS_IDLE: + switch( event->id ) + { + case MALI_PMM_EVENT_OS_POWER_UP: + /* Not expected in this state */ + break; + + case MALI_PMM_EVENT_JOB_SCHEDULED: + + /* Update idle cores to indicate active - remove these! */ + pmm_cores_set_active( pmm, cores ); + /* Remember when this happened */ + data_job_control->core_active_start = event->ts; +#if MALI_POWER_MGMT_TEST_SUITE + _mali_osk_pmm_policy_events_notifications(MALI_PMM_EVENT_JOB_SCHEDULED); +#endif + + /*** FALL THROUGH to QUEUED to check POWER UP ***/ + + case MALI_PMM_EVENT_JOB_QUEUED: + + pmm_policy_job_control_job_queued( pmm ); +#if MALI_POWER_MGMT_TEST_SUITE + _mali_osk_pmm_policy_events_notifications(MALI_PMM_EVENT_JOB_QUEUED); +#endif + break; + + case MALI_PMM_EVENT_DVFS_PAUSE: + + cores_subset = pmm_cores_to_power_down( pmm, cores, MALI_FALSE ); + if ( cores_subset != 0 ) + { + if ( !pmm_power_down_okay( pmm ) ) + { + pmm->is_dvfs_active = 1; + pmm->status = MALI_PMM_STATUS_OS_POWER_DOWN; + pmm_save_os_event_data( pmm, event->data ); + break; + } + } + pmm->status = MALI_PMM_STATUS_DVFS_PAUSE; + _mali_osk_pmm_dvfs_operation_done(0); + break; + + case MALI_PMM_EVENT_OS_POWER_DOWN: + + /* Need to power down all cores even if we need to wait for them */ + cores_subset = pmm_cores_to_power_down( pmm, cores, MALI_FALSE ); + if( cores_subset != 0 ) + { + /* There are some cores that need powering down */ + if( !pmm_invoke_power_down( pmm ) ) + { + /* We need to wait until they are idle */ + + pmm->status = MALI_PMM_STATUS_OS_POWER_DOWN; + /* Save the OS data to respond later */ + pmm_save_os_event_data( pmm, event->data ); + /* Exit this case - as we have to wait */ + break; + } + } + /* Set waiting status */ + pmm->status = MALI_PMM_STATUS_OS_WAITING; + /* All cores now down - respond to OS power event */ + _mali_osk_pmm_power_down_done( event->data ); + break; + + case MALI_PMM_EVENT_JOB_FINISHED: + + /* Update idle cores - add these! */ + pmm_cores_set_idle( pmm, cores ); +#if MALI_POWER_MGMT_TEST_SUITE + _mali_osk_pmm_policy_events_notifications(MALI_PMM_EVENT_JOB_FINISHED); +#endif + if( data_job_control->timeout > 0 ) + { + /* Wait for time out to fire */ + break; + } + /* For job control policy - turn off all cores */ + cores = pmm->cores_powered; + + /*** FALL THROUGH to TIMEOUT TEST as NO TIMEOUT ***/ + + case MALI_PMM_EVENT_TIMEOUT: + + /* Main job control policy - turn off cores after inactivity */ + if( job_control_timeout_valid( pmm, &data_job_control->latency, (u32)event->data ) ) + { + /* Valid timeout of inactivity - so find out if we can power down + * immedately - if we can't then this means the cores are still in fact + * active + */ + cores_subset = pmm_cores_to_power_down( pmm, cores, MALI_TRUE ); + if( cores_subset != 0 ) + { + /* Check if we can really power down, if not then we are not + * really in-active + */ + if( !pmm_invoke_power_down( pmm ) ) + { + pmm_power_down_cancel( pmm ); + } + } + /* else there are no cores powered up! */ + } +#if MALI_POWER_MGMT_TEST_SUITE + _mali_osk_pmm_policy_events_notifications(MALI_PMM_EVENT_TIMEOUT); +#endif + break; + + default: + /* Unexpected event */ + MALI_ERROR(_MALI_OSK_ERR_ITEM_NOT_FOUND); + } + break; + + /******************DVFS PAUSE**************/ + case MALI_PMM_STATUS_DVFS_PAUSE: + switch ( event->id ) + { + case MALI_PMM_EVENT_DVFS_RESUME: + + if ( pmm->cores_powered != 0 ) + { + pmm->cores_ack_down =0; + pmm_power_down_cancel( pmm ); + pmm->status = MALI_PMM_STATUS_IDLE; + } + else + { + pmm_policy_job_control_job_queued( pmm ); + } + _mali_osk_pmm_dvfs_operation_done( 0 ); + break; + + case MALI_PMM_EVENT_OS_POWER_DOWN: + /* Set waiting status */ + pmm->status = MALI_PMM_STATUS_OS_WAITING; + if ( pmm->cores_powered != 0 ) + { + if ( pmm_invoke_power_down( pmm ) ) + { + _mali_osk_pmm_power_down_done( 0 ); + break; + } + } + _mali_osk_pmm_power_down_done( 0 ); + break; + default: + break; + } + break; + + /**************** POWER UP ****************/ + case MALI_PMM_STATUS_OS_POWER_UP: + case MALI_PMM_STATUS_POLICY_POWER_UP: + switch( event->id ) + { + case MALI_PMM_EVENT_INTERNAL_POWER_UP_ACK: + /* Make sure cores powered off equal what we expect */ + MALI_DEBUG_ASSERT( cores == pmm->cores_pend_up ); + pmm_cores_set_up_ack( pmm, cores ); + + if( pmm_invoke_power_up( pmm ) ) + { + if( pmm->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 ) ); + } + pmm->status = MALI_PMM_STATUS_IDLE; + } + break; + + default: + /* Unexpected event */ + MALI_ERROR(_MALI_OSK_ERR_ITEM_NOT_FOUND); + } + break; + + /**************** POWER DOWN ****************/ + case MALI_PMM_STATUS_OS_POWER_DOWN: + case MALI_PMM_STATUS_POLICY_POWER_DOWN: + switch( event->id ) + { + + case MALI_PMM_EVENT_INTERNAL_POWER_DOWN_ACK: + + pmm_cores_set_down_ack( pmm, cores ); + + if ( pmm->is_dvfs_active == 1 ) + { + if( pmm_power_down_okay( pmm ) ) + { + pmm->is_dvfs_active = 0; + pmm->status = MALI_PMM_STATUS_DVFS_PAUSE; + _mali_osk_pmm_dvfs_operation_done( pmm_retrieve_os_event_data( pmm ) ); + } + break; + } + + /* Now check if we can power down */ + if( pmm_invoke_power_down( pmm ) ) + { + if( pmm->status == MALI_PMM_STATUS_OS_POWER_DOWN ) + { + /* Get the OS data and respond to the power down */ + _mali_osk_pmm_power_down_done( pmm_retrieve_os_event_data( pmm ) ); + } + pmm->status = MALI_PMM_STATUS_OS_WAITING; + } + break; + + default: + /* Unexpected event */ + MALI_ERROR(_MALI_OSK_ERR_ITEM_NOT_FOUND); + } + break; + + case MALI_PMM_STATUS_OS_WAITING: + switch( event->id ) + { + case MALI_PMM_EVENT_OS_POWER_UP: + cores_subset = pmm_cores_to_power_up( pmm, cores ); + if( cores_subset != 0 ) + { + /* There are some cores that need powering up */ + if( !pmm_invoke_power_up( pmm ) ) + { + /* Need to wait until power up complete */ + pmm->status = MALI_PMM_STATUS_OS_POWER_UP; + /* Save the OS data to respond later */ + pmm_save_os_event_data( pmm, event->data ); + /* Exit this case - as we have to wait */ + break; + } + } + pmm->status = MALI_PMM_STATUS_IDLE; + /* All cores now up - respond to OS power up event */ + _mali_osk_pmm_power_up_done( event->data ); + break; + + default: + /* All other messages are ignored in this state */ + break; + } + break; + + default: + /* Unexpected state */ + MALI_ERROR(_MALI_OSK_ERR_FAULT); + } + + /* Set in-activity latency timer - if required */ + job_control_timeout_setup( pmm, &data_job_control->latency ); + + /* Update the PMM state */ + pmm_update_system_state( pmm ); +#if MALI_STATE_TRACKING + pmm->mali_new_event_status = event->id; +#endif /* MALI_STATE_TRACKING */ + + MALIPMM_DEBUG_PRINT( ("PMM: Job control policy process end - status=%d and event=%d\n", pmm->status,event->id) ); + + MALI_SUCCESS; +} + +void pmm_policy_check_job_control() +{ + MALI_DEBUG_ASSERT_POINTER(data_job_control); + + /* Latency timer must have expired raise the event */ + pmm_policy_timer_raise_event(&data_job_control->latency); +} + + +#endif /* USING_MALI_PMM */ |