2 * Copyright (C) 2010-2012, 2014 ARM Limited. All rights reserved.
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.
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.
11 #include "mali_kernel_utilization.h"
13 #include "mali_osk_mali.h"
14 #include "mali_kernel_common.h"
15 #include "mali_session.h"
16 #include "mali_dvfs_policy.h"
17 #include "mali_control_timer.h"
19 static u64 period_start_time = 0;
21 static _mali_osk_timer_t *mali_control_timer = NULL;
22 static mali_bool timer_running = MALI_FALSE;
24 static u32 mali_control_timeout = 1000;
26 static mali_bool mali_skip_once = MALI_FALSE;
28 void mali_control_timer_add(u32 timeout)
30 _mali_osk_timer_add(mali_control_timer, _mali_osk_time_mstoticks(timeout));
33 static void mali_control_timer_callback(void *arg)
35 if (mali_utilization_enabled()) {
36 struct mali_gpu_utilization_data *util_data = NULL;
39 /* Calculate gpu utilization */
40 util_data = mali_utilization_calculate(&period_start_time, &time_period);
43 #if defined(CONFIG_MALI_DVFS)
44 mali_dvfs_policy_realize(util_data, time_period);
46 mali_utilization_platform_realize(util_data);
50 mali_utilization_data_lock();
51 if ((MALI_TRUE == timer_running) && (MALI_FALSE == mali_skip_once)) {
52 mali_control_timer_add(mali_control_timeout);
55 mali_skip_once = MALI_FALSE;
57 mali_utilization_data_unlock();
61 /* Init a timer (for now it is used for GPU utilization and dvfs) */
62 _mali_osk_errcode_t mali_control_timer_init(void)
64 _mali_osk_device_data data;
66 if (_MALI_OSK_ERR_OK == _mali_osk_device_data_get(&data)) {
67 /* Use device specific settings (if defined) */
68 if (0 != data.control_interval) {
69 mali_control_timeout = data.control_interval;
70 MALI_DEBUG_PRINT(2, ("Mali GPU Timer: %u\n", mali_control_timeout));
74 mali_control_timer = _mali_osk_timer_init();
75 if (NULL == mali_control_timer) {
76 return _MALI_OSK_ERR_FAULT;
78 _mali_osk_timer_setcallback(mali_control_timer, mali_control_timer_callback, NULL);
80 return _MALI_OSK_ERR_OK;
83 void mali_control_timer_term(void)
85 if (NULL != mali_control_timer) {
86 _mali_osk_timer_del(mali_control_timer);
87 timer_running = MALI_FALSE;
88 _mali_osk_timer_term(mali_control_timer);
89 mali_control_timer = NULL;
93 mali_bool mali_control_timer_resume(u64 time_now)
95 if (timer_running != MALI_TRUE) {
96 timer_running = MALI_TRUE;
98 period_start_time = time_now;
100 mali_utilization_reset();
108 void mali_control_timer_suspend(mali_bool suspend)
110 mali_utilization_data_lock();
112 if (timer_running == MALI_TRUE) {
113 timer_running = MALI_FALSE;
115 mali_utilization_data_unlock();
117 if (suspend == MALI_TRUE) {
118 _mali_osk_timer_del(mali_control_timer);
119 mali_utilization_reset();
122 mali_skip_once = MALI_TRUE;
125 mali_utilization_data_unlock();