drivers/gpu/arm/mali400/r4p0_rel0/common/mali_scheduler.c

   1 /*
   2  * Copyright (C) 2012 ARM Limited. All rights reserved.
   3  *
   4  * This program is free software and is provided to you under the terms of the GNU General Public License version 2
   5  * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
   6  *
   7  * A copy of the licence is included with the program, and can also be obtained from Free Software
   8  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   9  */
  10
  11 #include "mali_scheduler.h"
  12
  13 #include "mali_kernel_common.h"
  14 #include "mali_osk.h"
  15
  16 mali_bool mali_scheduler_hints[MALI_SCHEDULER_HINT_MAX];
  17
  18 static _mali_osk_atomic_t mali_job_id_autonumber;
  19 static _mali_osk_atomic_t mali_job_cache_order_autonumber;
  20
  21 static _mali_osk_wq_work_t *pp_scheduler_wq_high_pri = NULL;
  22 static _mali_osk_wq_work_t *gp_scheduler_wq_high_pri = NULL;
  23
  24 static void mali_scheduler_wq_schedule_pp(void *arg)
  25 {
  26         MALI_IGNORE(arg);
  27
  28         mali_pp_scheduler_schedule();
  29 }
  30
  31 static void mali_scheduler_wq_schedule_gp(void *arg)
  32 {
  33         MALI_IGNORE(arg);
  34
  35         mali_gp_scheduler_schedule();
  36 }
  37
  38 _mali_osk_errcode_t mali_scheduler_initialize(void)
  39 {
  40         if ( _MALI_OSK_ERR_OK != _mali_osk_atomic_init(&mali_job_id_autonumber, 0)) {
  41                 MALI_DEBUG_PRINT(1,  ("Initialization of atomic job id counter failed.\n"));
  42                 return _MALI_OSK_ERR_FAULT;
  43         }
  44
  45         if ( _MALI_OSK_ERR_OK != _mali_osk_atomic_init(&mali_job_cache_order_autonumber, 0)) {
  46                 MALI_DEBUG_PRINT(1,  ("Initialization of atomic job cache order counter failed.\n"));
  47                 _mali_osk_atomic_term(&mali_job_id_autonumber);
  48                 return _MALI_OSK_ERR_FAULT;
  49         }
  50
  51         pp_scheduler_wq_high_pri = _mali_osk_wq_create_work_high_pri(mali_scheduler_wq_schedule_pp, NULL);
  52         if (NULL == pp_scheduler_wq_high_pri) {
  53                 _mali_osk_atomic_term(&mali_job_cache_order_autonumber);
  54                 _mali_osk_atomic_term(&mali_job_id_autonumber);
  55                 return _MALI_OSK_ERR_NOMEM;
  56         }
  57
  58         gp_scheduler_wq_high_pri = _mali_osk_wq_create_work_high_pri(mali_scheduler_wq_schedule_gp, NULL);
  59         if (NULL == gp_scheduler_wq_high_pri) {
  60                 _mali_osk_wq_delete_work(pp_scheduler_wq_high_pri);
  61                 _mali_osk_atomic_term(&mali_job_cache_order_autonumber);
  62                 _mali_osk_atomic_term(&mali_job_id_autonumber);
  63                 return _MALI_OSK_ERR_NOMEM;
  64         }
  65
  66         return _MALI_OSK_ERR_OK;
  67 }
  68
  69 void mali_scheduler_terminate(void)
  70 {
  71         _mali_osk_wq_delete_work(gp_scheduler_wq_high_pri);
  72         _mali_osk_wq_delete_work(pp_scheduler_wq_high_pri);
  73         _mali_osk_atomic_term(&mali_job_cache_order_autonumber);
  74         _mali_osk_atomic_term(&mali_job_id_autonumber);
  75 }
  76
  77 u32 mali_scheduler_get_new_id(void)
  78 {
  79         u32 job_id = _mali_osk_atomic_inc_return(&mali_job_id_autonumber);
  80         return job_id;
  81 }
  82
  83 u32 mali_scheduler_get_new_cache_order(void)
  84 {
  85         u32 job_cache_order = _mali_osk_atomic_inc_return(&mali_job_cache_order_autonumber);
  86         return job_cache_order;
  87 }
  88
  89 void mali_scheduler_schedule_from_mask(mali_scheduler_mask mask, mali_bool deferred_schedule)
  90 {
  91         if (MALI_SCHEDULER_MASK_GP & mask) {
  92                 /* GP needs scheduling. */
  93                 if (deferred_schedule) {
  94                         /* Schedule GP deferred. */
  95                         _mali_osk_wq_schedule_work_high_pri(gp_scheduler_wq_high_pri);
  96                 } else {
  97                         /* Schedule GP now. */
  98                         mali_gp_scheduler_schedule();
  99                 }
 100         }
 101
 102         if (MALI_SCHEDULER_MASK_PP & mask) {
 103                 /* PP needs scheduling. */
 104                 if (deferred_schedule) {
 105                         /* Schedule PP deferred. */
 106                         _mali_osk_wq_schedule_work_high_pri(pp_scheduler_wq_high_pri);
 107                 } else {
 108                         /* Schedule PP now. */
 109                         mali_pp_scheduler_schedule();
 110                 }
 111         }
 112 }