drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_profiling_internal.c

   1 /*
   2  * Copyright (C) 2010-2012 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_kernel_common.h"
  12 #include "mali_osk.h"
  13 #include "mali_osk_mali.h"
  14 #include "mali_ukk.h"
  15 #include "mali_timestamp.h"
  16 #include "mali_osk_profiling.h"
  17 #include "mali_user_settings_db.h"
  18 #include "mali_profiling_internal.h"
  19
  20 typedef struct mali_profiling_entry {
  21         u64 timestamp;
  22         u32 event_id;
  23         u32 data[5];
  24 } mali_profiling_entry;
  25
  26 typedef enum mali_profiling_state {
  27         MALI_PROFILING_STATE_UNINITIALIZED,
  28         MALI_PROFILING_STATE_IDLE,
  29         MALI_PROFILING_STATE_RUNNING,
  30         MALI_PROFILING_STATE_RETURN,
  31 } mali_profiling_state;
  32
  33 static _mali_osk_mutex_t *lock = NULL;
  34 static mali_profiling_state prof_state = MALI_PROFILING_STATE_UNINITIALIZED;
  35 static mali_profiling_entry* profile_entries = NULL;
  36 static _mali_osk_atomic_t profile_insert_index;
  37 static u32 profile_mask = 0;
  38
  39 static inline void add_event(u32 event_id, u32 data0, u32 data1, u32 data2, u32 data3, u32 data4);
  40
  41 void probe_mali_timeline_event(void *data, TP_PROTO(unsigned int event_id, unsigned int d0, unsigned int d1, unsigned
  42                                int d2, unsigned int d3, unsigned int d4))
  43 {
  44         add_event(event_id, d0, d1, d2, d3, d4);
  45 }
  46
  47 _mali_osk_errcode_t _mali_internal_profiling_init(mali_bool auto_start)
  48 {
  49         profile_entries = NULL;
  50         profile_mask = 0;
  51         _mali_osk_atomic_init(&profile_insert_index, 0);
  52
  53         lock = _mali_osk_mutex_init(_MALI_OSK_LOCKFLAG_ORDERED, _MALI_OSK_LOCK_ORDER_PROFILING);
  54         if (NULL == lock) {
  55                 return _MALI_OSK_ERR_FAULT;
  56         }
  57
  58         prof_state = MALI_PROFILING_STATE_IDLE;
  59
  60         if (MALI_TRUE == auto_start) {
  61                 u32 limit = MALI_PROFILING_MAX_BUFFER_ENTRIES; /* Use maximum buffer size */
  62
  63                 mali_set_user_setting(_MALI_UK_USER_SETTING_SW_EVENTS_ENABLE, MALI_TRUE);
  64                 if (_MALI_OSK_ERR_OK != _mali_internal_profiling_start(&limit)) {
  65                         return _MALI_OSK_ERR_FAULT;
  66                 }
  67         }
  68
  69         return _MALI_OSK_ERR_OK;
  70 }
  71
  72 void _mali_internal_profiling_term(void)
  73 {
  74         u32 count;
  75
  76         /* Ensure profiling is stopped */
  77         _mali_internal_profiling_stop(&count);
  78
  79         prof_state = MALI_PROFILING_STATE_UNINITIALIZED;
  80
  81         if (NULL != profile_entries) {
  82                 _mali_osk_vfree(profile_entries);
  83                 profile_entries = NULL;
  84         }
  85
  86         if (NULL != lock) {
  87                 _mali_osk_mutex_term(lock);
  88                 lock = NULL;
  89         }
  90 }
  91
  92 _mali_osk_errcode_t _mali_internal_profiling_start(u32 * limit)
  93 {
  94         _mali_osk_errcode_t ret;
  95         mali_profiling_entry *new_profile_entries;
  96
  97         _mali_osk_mutex_wait(lock);
  98
  99         if (MALI_PROFILING_STATE_RUNNING == prof_state) {
 100                 _mali_osk_mutex_signal(lock);
 101                 return _MALI_OSK_ERR_BUSY;
 102         }
 103
 104         new_profile_entries = _mali_osk_valloc(*limit * sizeof(mali_profiling_entry));
 105
 106         if (NULL == new_profile_entries) {
 107                 _mali_osk_vfree(new_profile_entries);
 108                 return _MALI_OSK_ERR_NOMEM;
 109         }
 110
 111         if (MALI_PROFILING_MAX_BUFFER_ENTRIES < *limit) {
 112                 *limit = MALI_PROFILING_MAX_BUFFER_ENTRIES;
 113         }
 114
 115         profile_mask = 1;
 116         while (profile_mask <= *limit) {
 117                 profile_mask <<= 1;
 118         }
 119         profile_mask >>= 1;
 120
 121         *limit = profile_mask;
 122
 123         profile_mask--; /* turns the power of two into a mask of one less */
 124
 125         if (MALI_PROFILING_STATE_IDLE != prof_state) {
 126                 _mali_osk_mutex_signal(lock);
 127                 _mali_osk_vfree(new_profile_entries);
 128                 return _MALI_OSK_ERR_INVALID_ARGS; /* invalid to call this function in this state */
 129         }
 130
 131         profile_entries = new_profile_entries;
 132
 133         ret = _mali_timestamp_reset();
 134
 135         if (_MALI_OSK_ERR_OK == ret) {
 136                 prof_state = MALI_PROFILING_STATE_RUNNING;
 137         } else {
 138                 _mali_osk_vfree(profile_entries);
 139                 profile_entries = NULL;
 140         }
 141
 142         register_trace_mali_timeline_event(probe_mali_timeline_event, NULL);
 143
 144         _mali_osk_mutex_signal(lock);
 145         return ret;
 146 }
 147
 148 static inline void add_event(u32 event_id, u32 data0, u32 data1, u32 data2, u32 data3, u32 data4)
 149 {
 150         u32 cur_index = (_mali_osk_atomic_inc_return(&profile_insert_index) - 1) & profile_mask;
 151
 152         profile_entries[cur_index].timestamp = _mali_timestamp_get();
 153         profile_entries[cur_index].event_id = event_id;
 154         profile_entries[cur_index].data[0] = data0;
 155         profile_entries[cur_index].data[1] = data1;
 156         profile_entries[cur_index].data[2] = data2;
 157         profile_entries[cur_index].data[3] = data3;
 158         profile_entries[cur_index].data[4] = data4;
 159
 160         /* If event is "leave API function", add current memory usage to the event
 161          * as data point 4.  This is used in timeline profiling to indicate how
 162          * much memory was used when leaving a function. */
 163         if (event_id == (MALI_PROFILING_EVENT_TYPE_SINGLE|MALI_PROFILING_EVENT_CHANNEL_SOFTWARE|MALI_PROFILING_EVENT_REASON_SINGLE_SW_LEAVE_API_FUNC)) {
 164                 profile_entries[cur_index].data[4] = _mali_ukk_report_memory_usage();
 165         }
 166 }
 167
 168 _mali_osk_errcode_t _mali_internal_profiling_stop(u32 * count)
 169 {
 170         _mali_osk_mutex_wait(lock);
 171
 172         if (MALI_PROFILING_STATE_RUNNING != prof_state) {
 173                 _mali_osk_mutex_signal(lock);
 174                 return _MALI_OSK_ERR_INVALID_ARGS; /* invalid to call this function in this state */
 175         }
 176
 177         /* go into return state (user to retreive events), no more events will be added after this */
 178         prof_state = MALI_PROFILING_STATE_RETURN;
 179
 180         unregister_trace_mali_timeline_event(probe_mali_timeline_event, NULL);
 181
 182         _mali_osk_mutex_signal(lock);
 183
 184         tracepoint_synchronize_unregister();
 185
 186         *count = _mali_osk_atomic_read(&profile_insert_index);
 187         if (*count > profile_mask) *count = profile_mask;
 188
 189         return _MALI_OSK_ERR_OK;
 190 }
 191
 192 u32 _mali_internal_profiling_get_count(void)
 193 {
 194         u32 retval = 0;
 195
 196         _mali_osk_mutex_wait(lock);
 197         if (MALI_PROFILING_STATE_RETURN == prof_state) {
 198                 retval = _mali_osk_atomic_read(&profile_insert_index);
 199                 if (retval > profile_mask) retval = profile_mask;
 200         }
 201         _mali_osk_mutex_signal(lock);
 202
 203         return retval;
 204 }
 205
 206 _mali_osk_errcode_t _mali_internal_profiling_get_event(u32 index, u64* timestamp, u32* event_id, u32 data[5])
 207 {
 208         u32 raw_index = _mali_osk_atomic_read(&profile_insert_index);
 209
 210         _mali_osk_mutex_wait(lock);
 211
 212         if (index < profile_mask) {
 213                 if ((raw_index & ~profile_mask) != 0) {
 214                         index += raw_index;
 215                         index &= profile_mask;
 216                 }
 217
 218                 if (prof_state != MALI_PROFILING_STATE_RETURN) {
 219                         _mali_osk_mutex_signal(lock);
 220                         return _MALI_OSK_ERR_INVALID_ARGS; /* invalid to call this function in this state */
 221                 }
 222
 223                 if(index >= raw_index) {
 224                         _mali_osk_mutex_signal(lock);
 225                         return _MALI_OSK_ERR_FAULT;
 226                 }
 227
 228                 *timestamp = profile_entries[index].timestamp;
 229                 *event_id = profile_entries[index].event_id;
 230                 data[0] = profile_entries[index].data[0];
 231                 data[1] = profile_entries[index].data[1];
 232                 data[2] = profile_entries[index].data[2];
 233                 data[3] = profile_entries[index].data[3];
 234                 data[4] = profile_entries[index].data[4];
 235         } else {
 236                 _mali_osk_mutex_signal(lock);
 237                 return _MALI_OSK_ERR_FAULT;
 238         }
 239
 240         _mali_osk_mutex_signal(lock);
 241         return _MALI_OSK_ERR_OK;
 242 }
 243
 244 _mali_osk_errcode_t _mali_internal_profiling_clear(void)
 245 {
 246         _mali_osk_mutex_wait(lock);
 247
 248         if (MALI_PROFILING_STATE_RETURN != prof_state) {
 249                 _mali_osk_mutex_signal(lock);
 250                 return _MALI_OSK_ERR_INVALID_ARGS; /* invalid to call this function in this state */
 251         }
 252
 253         prof_state = MALI_PROFILING_STATE_IDLE;
 254         profile_mask = 0;
 255         _mali_osk_atomic_init(&profile_insert_index, 0);
 256
 257         if (NULL != profile_entries) {
 258                 _mali_osk_vfree(profile_entries);
 259                 profile_entries = NULL;
 260         }
 261
 262         _mali_osk_mutex_signal(lock);
 263         return _MALI_OSK_ERR_OK;
 264 }
 265
 266 mali_bool _mali_internal_profiling_is_recording(void)
 267 {
 268         return prof_state == MALI_PROFILING_STATE_RUNNING ? MALI_TRUE : MALI_FALSE;
 269 }
 270
 271 mali_bool _mali_internal_profiling_have_recording(void)
 272 {
 273         return prof_state == MALI_PROFILING_STATE_RETURN ? MALI_TRUE : MALI_FALSE;
 274 }