The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 1999-2012 Broadcom Corporation |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ******************************************************************************/ |
| 18 | #include "gki_int.h" |
| 19 | |
| 20 | #ifndef BT_ERROR_TRACE_0 |
| 21 | #define BT_ERROR_TRACE_0(l,m) |
| 22 | #endif |
| 23 | |
| 24 | /* Make sure that this has been defined in target.h */ |
| 25 | #ifndef GKI_NUM_TIMERS |
| 26 | #error NO TIMERS: Must define at least 1 timer in the system! |
| 27 | #endif |
| 28 | |
| 29 | |
| 30 | #define GKI_NO_NEW_TMRS_STARTED (0x7fffffffL) /* Largest signed positive timer count */ |
| 31 | #define GKI_UNUSED_LIST_ENTRY (0x80000000L) /* Marks an unused timer list entry (initial value) */ |
| 32 | #define GKI_MAX_INT32 (0x7fffffffL) |
| 33 | |
| 34 | /******************************************************************************* |
| 35 | ** |
| 36 | ** Function gki_timers_init |
| 37 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 38 | ** Description This internal function is called once at startup to |
| 39 | ** initialize all the timer structures. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 40 | ** |
| 41 | ** Returns void |
| 42 | ** |
| 43 | *******************************************************************************/ |
| 44 | void gki_timers_init(void) |
| 45 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 46 | uint8_t tt; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 47 | |
| 48 | gki_cb.com.OSTicksTilExp = 0; /* Remaining time (of OSTimeCurTimeout) before next timer expires */ |
| 49 | gki_cb.com.OSNumOrigTicks = 0; |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 50 | #if (GKI_DELAY_STOP_SYS_TICK > 0) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 51 | gki_cb.com.OSTicksTilStop = 0; /* clear inactivity delay timer */ |
| 52 | #endif |
| 53 | |
| 54 | for (tt = 0; tt < GKI_MAX_TASKS; tt++) |
| 55 | { |
| 56 | gki_cb.com.OSWaitTmr [tt] = 0; |
| 57 | |
| 58 | #if (GKI_NUM_TIMERS > 0) |
| 59 | gki_cb.com.OSTaskTmr0 [tt] = 0; |
| 60 | gki_cb.com.OSTaskTmr0R [tt] = 0; |
| 61 | #endif |
| 62 | |
| 63 | #if (GKI_NUM_TIMERS > 1) |
| 64 | gki_cb.com.OSTaskTmr1 [tt] = 0; |
| 65 | gki_cb.com.OSTaskTmr1R [tt] = 0; |
| 66 | #endif |
| 67 | |
| 68 | #if (GKI_NUM_TIMERS > 2) |
| 69 | gki_cb.com.OSTaskTmr2 [tt] = 0; |
| 70 | gki_cb.com.OSTaskTmr2R [tt] = 0; |
| 71 | #endif |
| 72 | |
| 73 | #if (GKI_NUM_TIMERS > 3) |
| 74 | gki_cb.com.OSTaskTmr3 [tt] = 0; |
| 75 | gki_cb.com.OSTaskTmr3R [tt] = 0; |
| 76 | #endif |
| 77 | } |
| 78 | |
| 79 | for (tt = 0; tt < GKI_MAX_TIMER_QUEUES; tt++) |
| 80 | { |
| 81 | gki_cb.com.timer_queues[tt] = NULL; |
| 82 | } |
| 83 | |
| 84 | gki_cb.com.p_tick_cb = NULL; |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 85 | gki_cb.com.system_tick_running = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 86 | |
| 87 | return; |
| 88 | } |
| 89 | |
| 90 | /******************************************************************************* |
| 91 | ** |
| 92 | ** Function gki_timers_is_timer_running |
| 93 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 94 | ** Description This internal function is called to test if any gki timer |
| 95 | ** are running |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 96 | ** |
| 97 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 98 | ** Returns TRUE if at least one time is running in the system, FALSE |
| 99 | ** else. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 100 | ** |
| 101 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 102 | bool gki_timers_is_timer_running(void) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 103 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 104 | uint8_t tt; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 105 | for (tt = 0; tt < GKI_MAX_TASKS; tt++) |
| 106 | { |
| 107 | |
| 108 | #if (GKI_NUM_TIMERS > 0) |
| 109 | if(gki_cb.com.OSTaskTmr0 [tt]) |
| 110 | { |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 111 | return true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 112 | } |
| 113 | #endif |
| 114 | |
| 115 | #if (GKI_NUM_TIMERS > 1) |
| 116 | if(gki_cb.com.OSTaskTmr1 [tt] ) |
| 117 | { |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 118 | return true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 119 | } |
| 120 | #endif |
| 121 | |
| 122 | #if (GKI_NUM_TIMERS > 2) |
| 123 | if(gki_cb.com.OSTaskTmr2 [tt] ) |
| 124 | { |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 125 | return true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 126 | } |
| 127 | #endif |
| 128 | |
| 129 | #if (GKI_NUM_TIMERS > 3) |
| 130 | if(gki_cb.com.OSTaskTmr3 [tt] ) |
| 131 | { |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 132 | return true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 133 | } |
| 134 | #endif |
| 135 | } |
| 136 | |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 137 | return false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 138 | |
| 139 | } |
| 140 | |
| 141 | /******************************************************************************* |
| 142 | ** |
| 143 | ** Function GKI_get_tick_count |
| 144 | ** |
| 145 | ** Description This function returns the current system ticks |
| 146 | ** |
| 147 | ** Returns The current number of system ticks |
| 148 | ** |
| 149 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 150 | uint32_t GKI_get_tick_count(void) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 151 | { |
| 152 | return gki_cb.com.OSTicks; |
| 153 | } |
| 154 | |
| 155 | |
| 156 | /******************************************************************************* |
| 157 | ** |
| 158 | ** Function GKI_ready_to_sleep |
| 159 | ** |
| 160 | ** Description This function returns the number of system ticks until the |
| 161 | ** next timer will expire. It is typically called by a power |
| 162 | ** savings manager to find out how long it can have the system |
| 163 | ** sleep before it needs to service the next entry. |
| 164 | ** |
| 165 | ** Parameters: None |
| 166 | ** |
| 167 | ** Returns Number of ticks til the next timer expires |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 168 | ** Note: The value is a signed value. This value should be |
| 169 | ** compared to x > 0, to avoid misinterpreting negative |
| 170 | ** tick values. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 171 | ** |
| 172 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 173 | int32_t GKI_ready_to_sleep (void) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 174 | { |
| 175 | return (gki_cb.com.OSTicksTilExp); |
| 176 | } |
| 177 | |
| 178 | |
| 179 | /******************************************************************************* |
| 180 | ** |
| 181 | ** Function GKI_start_timer |
| 182 | ** |
| 183 | ** Description An application can call this function to start one of |
| 184 | ** it's four general purpose timers. Any of the four timers |
| 185 | ** can be 1-shot or continuous. If a timer is already running, |
| 186 | ** it will be reset to the new parameters. |
| 187 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 188 | ** Parameters tnum - (input) timer number to be started |
| 189 | ** (TIMER_0, TIMER_1, TIMER_2, or |
| 190 | ** TIMER_3) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 191 | ** ticks - (input) the number of system ticks til the |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 192 | ** timer expires. |
| 193 | ** is_continuous - (input) TRUE if timer restarts |
| 194 | ** automatically, else FALSE if it is |
| 195 | ** a 'one-shot'. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 196 | ** |
| 197 | ** Returns void |
| 198 | ** |
| 199 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 200 | void GKI_start_timer (uint8_t tnum, int32_t ticks, bool is_continuous) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 201 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 202 | int32_t reload; |
| 203 | int32_t orig_ticks; |
| 204 | uint8_t task_id = GKI_get_taskid(); |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 205 | bool bad_timer = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 206 | |
| 207 | if (ticks <= 0) |
| 208 | ticks = 1; |
| 209 | |
| 210 | orig_ticks = ticks; /* save the ticks in case adjustment is necessary */ |
| 211 | |
| 212 | |
| 213 | /* If continuous timer, set reload, else set it to 0 */ |
| 214 | if (is_continuous) |
| 215 | reload = ticks; |
| 216 | else |
| 217 | reload = 0; |
| 218 | |
| 219 | GKI_disable(); |
| 220 | |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 221 | if(gki_timers_is_timer_running() == false) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 222 | { |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 223 | #if (GKI_DELAY_STOP_SYS_TICK > 0) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 224 | /* if inactivity delay timer is not running, start system tick */ |
| 225 | if(gki_cb.com.OSTicksTilStop == 0) |
| 226 | { |
| 227 | #endif |
| 228 | if(gki_cb.com.p_tick_cb) |
| 229 | { |
| 230 | /* start system tick */ |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 231 | gki_cb.com.system_tick_running = true; |
| 232 | (gki_cb.com.p_tick_cb)(true); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 233 | } |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 234 | #if (GKI_DELAY_STOP_SYS_TICK > 0) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 235 | } |
| 236 | else |
| 237 | { |
| 238 | /* clear inactivity delay timer */ |
| 239 | gki_cb.com.OSTicksTilStop = 0; |
| 240 | } |
| 241 | #endif |
| 242 | } |
| 243 | /* Add the time since the last task timer update. |
| 244 | ** Note that this works when no timers are active since |
| 245 | ** both OSNumOrigTicks and OSTicksTilExp are 0. |
| 246 | */ |
| 247 | if (GKI_MAX_INT32 - (gki_cb.com.OSNumOrigTicks - gki_cb.com.OSTicksTilExp) > ticks) |
| 248 | { |
| 249 | ticks += gki_cb.com.OSNumOrigTicks - gki_cb.com.OSTicksTilExp; |
| 250 | } |
| 251 | else |
| 252 | ticks = GKI_MAX_INT32; |
| 253 | |
| 254 | switch (tnum) |
| 255 | { |
| 256 | #if (GKI_NUM_TIMERS > 0) |
| 257 | case TIMER_0: |
| 258 | gki_cb.com.OSTaskTmr0R[task_id] = reload; |
| 259 | gki_cb.com.OSTaskTmr0 [task_id] = ticks; |
| 260 | break; |
| 261 | #endif |
| 262 | |
| 263 | #if (GKI_NUM_TIMERS > 1) |
| 264 | case TIMER_1: |
| 265 | gki_cb.com.OSTaskTmr1R[task_id] = reload; |
| 266 | gki_cb.com.OSTaskTmr1 [task_id] = ticks; |
| 267 | break; |
| 268 | #endif |
| 269 | |
| 270 | #if (GKI_NUM_TIMERS > 2) |
| 271 | case TIMER_2: |
| 272 | gki_cb.com.OSTaskTmr2R[task_id] = reload; |
| 273 | gki_cb.com.OSTaskTmr2 [task_id] = ticks; |
| 274 | break; |
| 275 | #endif |
| 276 | |
| 277 | #if (GKI_NUM_TIMERS > 3) |
| 278 | case TIMER_3: |
| 279 | gki_cb.com.OSTaskTmr3R[task_id] = reload; |
| 280 | gki_cb.com.OSTaskTmr3 [task_id] = ticks; |
| 281 | break; |
| 282 | #endif |
| 283 | default: |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 284 | bad_timer = true; /* Timer number is bad, so do not use */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | /* Update the expiration timeout if a legitimate timer */ |
| 288 | if (!bad_timer) |
| 289 | { |
| 290 | /* Only update the timeout value if it is less than any other newly started timers */ |
| 291 | gki_adjust_timer_count (orig_ticks); |
| 292 | } |
| 293 | |
| 294 | GKI_enable(); |
| 295 | |
| 296 | } |
| 297 | |
| 298 | /******************************************************************************* |
| 299 | ** |
| 300 | ** Function GKI_stop_timer |
| 301 | ** |
| 302 | ** Description An application can call this function to stop one of |
| 303 | ** it's four general purpose timers. There is no harm in |
| 304 | ** stopping a timer that is already stopped. |
| 305 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 306 | ** Parameters tnum - (input) timer number to be started (TIMER_0, |
| 307 | ** TIMER_1, TIMER_2, or TIMER_3) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 308 | ** Returns void |
| 309 | ** |
| 310 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 311 | void GKI_stop_timer (uint8_t tnum) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 312 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 313 | uint8_t task_id = GKI_get_taskid(); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 314 | |
| 315 | GKI_disable(); |
| 316 | |
| 317 | switch (tnum) |
| 318 | { |
| 319 | #if (GKI_NUM_TIMERS > 0) |
| 320 | case TIMER_0: |
| 321 | gki_cb.com.OSTaskTmr0R[task_id] = 0; |
| 322 | gki_cb.com.OSTaskTmr0 [task_id] = 0; |
| 323 | break; |
| 324 | #endif |
| 325 | |
| 326 | #if (GKI_NUM_TIMERS > 1) |
| 327 | case TIMER_1: |
| 328 | gki_cb.com.OSTaskTmr1R[task_id] = 0; |
| 329 | gki_cb.com.OSTaskTmr1 [task_id] = 0; |
| 330 | break; |
| 331 | #endif |
| 332 | |
| 333 | #if (GKI_NUM_TIMERS > 2) |
| 334 | case TIMER_2: |
| 335 | gki_cb.com.OSTaskTmr2R[task_id] = 0; |
| 336 | gki_cb.com.OSTaskTmr2 [task_id] = 0; |
| 337 | break; |
| 338 | #endif |
| 339 | |
| 340 | #if (GKI_NUM_TIMERS > 3) |
| 341 | case TIMER_3: |
| 342 | gki_cb.com.OSTaskTmr3R[task_id] = 0; |
| 343 | gki_cb.com.OSTaskTmr3 [task_id] = 0; |
| 344 | break; |
| 345 | #endif |
| 346 | } |
| 347 | |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 348 | if (gki_timers_is_timer_running() == false) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 349 | { |
| 350 | if (gki_cb.com.p_tick_cb) |
| 351 | { |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 352 | #if (GKI_DELAY_STOP_SYS_TICK > 0) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 353 | /* if inactivity delay timer is not running */ |
| 354 | if ((gki_cb.com.system_tick_running)&&(gki_cb.com.OSTicksTilStop == 0)) |
| 355 | { |
| 356 | /* set inactivity delay timer */ |
| 357 | /* when timer expires, system tick will be stopped */ |
| 358 | gki_cb.com.OSTicksTilStop = GKI_DELAY_STOP_SYS_TICK; |
| 359 | } |
| 360 | #else |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 361 | gki_cb.com.system_tick_running = false; |
| 362 | (gki_cb.com.p_tick_cb)(false); /* stop system tick */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 363 | #endif |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | GKI_enable(); |
| 368 | |
| 369 | |
| 370 | } |
| 371 | |
| 372 | |
| 373 | /******************************************************************************* |
| 374 | ** |
| 375 | ** Function GKI_timer_update |
| 376 | ** |
| 377 | ** Description This function is called by an OS to drive the GKI's timers. |
| 378 | ** It is typically called at every system tick to |
| 379 | ** update the timers for all tasks, and check for timeouts. |
| 380 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 381 | ** Note: It has been designed to also allow for variable tick |
| 382 | ** updates so that systems with strict power savings |
| 383 | ** requirements can have the update occur at variable |
| 384 | ** intervals. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 385 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 386 | ** Parameters: ticks_since_last_update - (input) This is the number of |
| 387 | ** TICKS that have occurred since the last time |
| 388 | ** GKI_timer_update was called. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 389 | ** |
| 390 | ** Returns void |
| 391 | ** |
| 392 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 393 | void GKI_timer_update (int32_t ticks_since_last_update) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 394 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 395 | uint8_t task_id; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 396 | long next_expiration; /* Holds the next soonest expiration time after this update */ |
| 397 | |
| 398 | /* Increment the number of ticks used for time stamps */ |
| 399 | gki_cb.com.OSTicks += ticks_since_last_update; |
| 400 | |
| 401 | /* If any timers are running in any tasks, decrement the remaining time til |
| 402 | * the timer updates need to take place (next expiration occurs) |
| 403 | */ |
| 404 | gki_cb.com.OSTicksTilExp -= ticks_since_last_update; |
| 405 | |
| 406 | /* Don't allow timer interrupt nesting */ |
| 407 | if (gki_cb.com.timer_nesting) |
| 408 | return; |
| 409 | |
| 410 | gki_cb.com.timer_nesting = 1; |
| 411 | |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 412 | #if (GKI_DELAY_STOP_SYS_TICK > 0) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 413 | /* if inactivity delay timer is set and expired */ |
| 414 | if (gki_cb.com.OSTicksTilStop) |
| 415 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 416 | if( gki_cb.com.OSTicksTilStop <= (uint32_t)ticks_since_last_update ) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 417 | { |
| 418 | if(gki_cb.com.p_tick_cb) |
| 419 | { |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 420 | gki_cb.com.system_tick_running = false; |
| 421 | (gki_cb.com.p_tick_cb)(false); /* stop system tick */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 422 | } |
| 423 | gki_cb.com.OSTicksTilStop = 0; /* clear inactivity delay timer */ |
| 424 | gki_cb.com.timer_nesting = 0; |
| 425 | return; |
| 426 | } |
| 427 | else |
| 428 | gki_cb.com.OSTicksTilStop -= ticks_since_last_update; |
| 429 | } |
| 430 | #endif |
| 431 | |
| 432 | /* No need to update the ticks if no timeout has occurred */ |
| 433 | if (gki_cb.com.OSTicksTilExp > 0) |
| 434 | { |
| 435 | gki_cb.com.timer_nesting = 0; |
| 436 | return; |
| 437 | } |
| 438 | |
| 439 | GKI_disable(); |
| 440 | |
| 441 | next_expiration = GKI_NO_NEW_TMRS_STARTED; |
| 442 | |
| 443 | /* If here then gki_cb.com.OSTicksTilExp <= 0. If negative, then increase gki_cb.com.OSNumOrigTicks |
| 444 | to account for the difference so timer updates below are decremented by the full number |
| 445 | of ticks. gki_cb.com.OSNumOrigTicks is reset at the bottom of this function so changing this |
| 446 | value only affects the timer updates below |
| 447 | */ |
| 448 | gki_cb.com.OSNumOrigTicks -= gki_cb.com.OSTicksTilExp; |
| 449 | |
| 450 | /* Check for OS Task Timers */ |
| 451 | for (task_id = 0; task_id < GKI_MAX_TASKS; task_id++) |
| 452 | { |
Martijn Coenen | 5c65c3a | 2013-03-27 13:23:36 -0700 | [diff] [blame] | 453 | if (gki_cb.com.OSRdyTbl[task_id] == TASK_DEAD) |
| 454 | { |
| 455 | // task is shutdown do not try to service timers |
| 456 | continue; |
| 457 | } |
| 458 | |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 459 | if (gki_cb.com.OSWaitTmr[task_id] > 0) /* If timer is running */ |
| 460 | { |
| 461 | gki_cb.com.OSWaitTmr[task_id] -= gki_cb.com.OSNumOrigTicks; |
| 462 | if (gki_cb.com.OSWaitTmr[task_id] <= 0) |
| 463 | { |
| 464 | /* Timer Expired */ |
| 465 | gki_cb.com.OSRdyTbl[task_id] = TASK_READY; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | #if (GKI_NUM_TIMERS > 0) |
| 470 | /* If any timer is running, decrement */ |
| 471 | if (gki_cb.com.OSTaskTmr0[task_id] > 0) |
| 472 | { |
| 473 | gki_cb.com.OSTaskTmr0[task_id] -= gki_cb.com.OSNumOrigTicks; |
| 474 | |
| 475 | if (gki_cb.com.OSTaskTmr0[task_id] <= 0) |
| 476 | { |
| 477 | /* Set Timer 0 Expired event mask and reload timer */ |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 478 | #if (GKI_TIMER_UPDATES_FROM_ISR == TRUE) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 479 | GKI_isend_event (task_id, TIMER_0_EVT_MASK); |
| 480 | #else |
| 481 | GKI_send_event (task_id, TIMER_0_EVT_MASK); |
| 482 | #endif |
| 483 | gki_cb.com.OSTaskTmr0[task_id] = gki_cb.com.OSTaskTmr0R[task_id]; |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | /* Check to see if this timer is the next one to expire */ |
| 488 | if (gki_cb.com.OSTaskTmr0[task_id] > 0 && gki_cb.com.OSTaskTmr0[task_id] < next_expiration) |
| 489 | next_expiration = gki_cb.com.OSTaskTmr0[task_id]; |
| 490 | #endif |
| 491 | |
| 492 | #if (GKI_NUM_TIMERS > 1) |
| 493 | /* If any timer is running, decrement */ |
| 494 | if (gki_cb.com.OSTaskTmr1[task_id] > 0) |
| 495 | { |
| 496 | gki_cb.com.OSTaskTmr1[task_id] -= gki_cb.com.OSNumOrigTicks; |
| 497 | |
| 498 | if (gki_cb.com.OSTaskTmr1[task_id] <= 0) |
| 499 | { |
| 500 | /* Set Timer 1 Expired event mask and reload timer */ |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 501 | #if (GKI_TIMER_UPDATES_FROM_ISR == TRUE) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 502 | GKI_isend_event (task_id, TIMER_1_EVT_MASK); |
| 503 | #else |
| 504 | GKI_send_event (task_id, TIMER_1_EVT_MASK); |
| 505 | #endif |
| 506 | gki_cb.com.OSTaskTmr1[task_id] = gki_cb.com.OSTaskTmr1R[task_id]; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | /* Check to see if this timer is the next one to expire */ |
| 511 | if (gki_cb.com.OSTaskTmr1[task_id] > 0 && gki_cb.com.OSTaskTmr1[task_id] < next_expiration) |
| 512 | next_expiration = gki_cb.com.OSTaskTmr1[task_id]; |
| 513 | #endif |
| 514 | |
| 515 | #if (GKI_NUM_TIMERS > 2) |
| 516 | /* If any timer is running, decrement */ |
| 517 | if (gki_cb.com.OSTaskTmr2[task_id] > 0) |
| 518 | { |
| 519 | gki_cb.com.OSTaskTmr2[task_id] -= gki_cb.com.OSNumOrigTicks; |
| 520 | |
| 521 | if (gki_cb.com.OSTaskTmr2[task_id] <= 0) |
| 522 | { |
| 523 | /* Set Timer 2 Expired event mask and reload timer */ |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 524 | #if (GKI_TIMER_UPDATES_FROM_ISR == TRUE) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 525 | GKI_isend_event (task_id, TIMER_2_EVT_MASK); |
| 526 | #else |
| 527 | GKI_send_event (task_id, TIMER_2_EVT_MASK); |
| 528 | #endif |
| 529 | gki_cb.com.OSTaskTmr2[task_id] = gki_cb.com.OSTaskTmr2R[task_id]; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /* Check to see if this timer is the next one to expire */ |
| 534 | if (gki_cb.com.OSTaskTmr2[task_id] > 0 && gki_cb.com.OSTaskTmr2[task_id] < next_expiration) |
| 535 | next_expiration = gki_cb.com.OSTaskTmr2[task_id]; |
| 536 | #endif |
| 537 | |
| 538 | #if (GKI_NUM_TIMERS > 3) |
| 539 | /* If any timer is running, decrement */ |
| 540 | if (gki_cb.com.OSTaskTmr3[task_id] > 0) |
| 541 | { |
| 542 | gki_cb.com.OSTaskTmr3[task_id] -= gki_cb.com.OSNumOrigTicks; |
| 543 | |
| 544 | if (gki_cb.com.OSTaskTmr3[task_id] <= 0) |
| 545 | { |
| 546 | /* Set Timer 3 Expired event mask and reload timer */ |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 547 | #if (GKI_TIMER_UPDATES_FROM_ISR == TRUE) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 548 | GKI_isend_event (task_id, TIMER_3_EVT_MASK); |
| 549 | #else |
| 550 | GKI_send_event (task_id, TIMER_3_EVT_MASK); |
| 551 | #endif |
| 552 | gki_cb.com.OSTaskTmr3[task_id] = gki_cb.com.OSTaskTmr3R[task_id]; |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | /* Check to see if this timer is the next one to expire */ |
| 557 | if (gki_cb.com.OSTaskTmr3[task_id] > 0 && gki_cb.com.OSTaskTmr3[task_id] < next_expiration) |
| 558 | next_expiration = gki_cb.com.OSTaskTmr3[task_id]; |
| 559 | #endif |
| 560 | |
| 561 | } |
| 562 | |
| 563 | /* Set the next timer experation value if there is one to start */ |
| 564 | if (next_expiration < GKI_NO_NEW_TMRS_STARTED) |
| 565 | { |
| 566 | gki_cb.com.OSTicksTilExp = gki_cb.com.OSNumOrigTicks = next_expiration; |
| 567 | } |
| 568 | else |
| 569 | { |
| 570 | gki_cb.com.OSTicksTilExp = gki_cb.com.OSNumOrigTicks = 0; |
| 571 | } |
| 572 | |
| 573 | gki_cb.com.timer_nesting = 0; |
| 574 | |
| 575 | GKI_enable(); |
| 576 | |
| 577 | return; |
| 578 | } |
| 579 | |
| 580 | |
| 581 | /******************************************************************************* |
| 582 | ** |
| 583 | ** Function GKI_timer_queue_empty |
| 584 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 585 | ** Description This function is called by applications to see whether the |
| 586 | ** timer queue is empty |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 587 | ** |
| 588 | ** Parameters |
| 589 | ** |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 590 | ** Returns bool |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 591 | ** |
| 592 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 593 | bool GKI_timer_queue_empty (void) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 594 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 595 | uint8_t tt; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 596 | |
| 597 | for (tt = 0; tt < GKI_MAX_TIMER_QUEUES; tt++) |
| 598 | { |
| 599 | if (gki_cb.com.timer_queues[tt]) |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 600 | return false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 601 | } |
| 602 | |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 603 | return true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 604 | } |
| 605 | |
| 606 | /******************************************************************************* |
| 607 | ** |
| 608 | ** Function GKI_timer_queue_register_callback |
| 609 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 610 | ** Description This function is called by applications to register system |
| 611 | ** tick start/stop callback for time queues |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 612 | ** |
| 613 | ** |
| 614 | ** Parameters p_callback - (input) pointer to the system tick callback |
| 615 | ** |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 616 | ** Returns bool |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 617 | ** |
| 618 | *******************************************************************************/ |
| 619 | void GKI_timer_queue_register_callback (SYSTEM_TICK_CBACK *p_callback) |
| 620 | { |
| 621 | gki_cb.com.p_tick_cb = p_callback; |
| 622 | |
| 623 | return; |
| 624 | } |
| 625 | |
| 626 | /******************************************************************************* |
| 627 | ** |
| 628 | ** Function GKI_init_timer_list |
| 629 | ** |
| 630 | ** Description This function is called by applications when they |
| 631 | ** want to initialize a timer list. |
| 632 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 633 | ** Parameters p_timer_listq - (input) pointer to the timer list queue |
| 634 | ** object |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 635 | ** |
| 636 | ** Returns void |
| 637 | ** |
| 638 | *******************************************************************************/ |
| 639 | void GKI_init_timer_list (TIMER_LIST_Q *p_timer_listq) |
| 640 | { |
| 641 | p_timer_listq->p_first = NULL; |
| 642 | p_timer_listq->p_last = NULL; |
| 643 | p_timer_listq->last_ticks = 0; |
| 644 | |
| 645 | return; |
| 646 | } |
| 647 | |
| 648 | /******************************************************************************* |
| 649 | ** |
| 650 | ** Function GKI_init_timer_list_entry |
| 651 | ** |
| 652 | ** Description This function is called by the applications when they |
| 653 | ** want to initialize a timer list entry. This must be |
| 654 | ** done prior to first use of the entry. |
| 655 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 656 | ** Parameters p_tle - (input) pointer to a timer list queue entry |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 657 | ** |
| 658 | ** Returns void |
| 659 | ** |
| 660 | *******************************************************************************/ |
| 661 | void GKI_init_timer_list_entry (TIMER_LIST_ENT *p_tle) |
| 662 | { |
| 663 | p_tle->p_next = NULL; |
| 664 | p_tle->p_prev = NULL; |
| 665 | p_tle->ticks = GKI_UNUSED_LIST_ENTRY; |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 666 | p_tle->in_use = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 667 | } |
| 668 | |
| 669 | |
| 670 | /******************************************************************************* |
| 671 | ** |
| 672 | ** Function GKI_update_timer_list |
| 673 | ** |
| 674 | ** Description This function is called by the applications when they |
| 675 | ** want to update a timer list. This should be at every |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 676 | ** timer list unit tick, e.g. once per sec, once per minute |
| 677 | ** etc. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 678 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 679 | ** Parameters p_timer_listq - (input) pointer to the timer list queue |
| 680 | ** object |
| 681 | ** num_units_since_last_update - (input) number of units since |
| 682 | ** the last update (allows for variable unit update) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 683 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 684 | ** NOTE: The following timer list update routines should not be used for exact |
| 685 | ** time critical purposes. The timer tasks should be used when exact |
| 686 | ** timing is needed. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 687 | ** |
| 688 | ** Returns the number of timers that have expired |
| 689 | ** |
| 690 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 691 | uint16_t GKI_update_timer_list (TIMER_LIST_Q *p_timer_listq, int32_t num_units_since_last_update) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 692 | { |
| 693 | TIMER_LIST_ENT *p_tle; |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 694 | uint16_t num_time_out = 0; |
| 695 | int32_t rem_ticks; |
| 696 | int32_t temp_ticks; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 697 | |
| 698 | p_tle = p_timer_listq->p_first; |
| 699 | |
| 700 | /* First, get the guys who have previously timed out */ |
| 701 | /* Note that the tick value of the timers should always be '0' */ |
| 702 | while ((p_tle) && (p_tle->ticks <= 0)) |
| 703 | { |
| 704 | num_time_out++; |
| 705 | p_tle = p_tle->p_next; |
| 706 | } |
| 707 | |
| 708 | /* Timer entriy tick values are relative to the preceeding entry */ |
| 709 | rem_ticks = num_units_since_last_update; |
| 710 | |
| 711 | /* Now, adjust remaining timer entries */ |
| 712 | while ((p_tle != NULL) && (rem_ticks > 0)) |
| 713 | { |
| 714 | temp_ticks = p_tle->ticks; |
| 715 | p_tle->ticks -= rem_ticks; |
| 716 | |
| 717 | /* See if this timer has just timed out */ |
| 718 | if (p_tle->ticks <= 0) |
| 719 | { |
| 720 | /* We set the number of ticks to '0' so that the legacy code |
| 721 | * that assumes a '0' or nonzero value will still work as coded. */ |
| 722 | p_tle->ticks = 0; |
| 723 | |
| 724 | num_time_out++; |
| 725 | } |
| 726 | |
| 727 | rem_ticks -= temp_ticks; /* Decrement the remaining ticks to process */ |
| 728 | p_tle = p_tle->p_next; |
| 729 | } |
| 730 | |
| 731 | if (p_timer_listq->last_ticks > 0) |
| 732 | { |
| 733 | p_timer_listq->last_ticks -= num_units_since_last_update; |
| 734 | |
| 735 | /* If the last timer has expired set last_ticks to 0 so that other list update |
| 736 | * functions will calculate correctly |
| 737 | */ |
| 738 | if (p_timer_listq->last_ticks < 0) |
| 739 | p_timer_listq->last_ticks = 0; |
| 740 | } |
| 741 | |
| 742 | return (num_time_out); |
| 743 | } |
| 744 | |
| 745 | /******************************************************************************* |
| 746 | ** |
| 747 | ** Function GKI_get_remaining_ticks |
| 748 | ** |
| 749 | ** Description This function is called by an application to get remaining |
| 750 | ** ticks to expire |
| 751 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 752 | ** Parameters p_timer_listq - (input) pointer to the timer list queue |
| 753 | ** object |
| 754 | ** p_target_tle - (input) pointer to a timer list queue entry |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 755 | ** |
| 756 | ** Returns 0 if timer is not used or timer is not in the list |
| 757 | ** remaining ticks if success |
| 758 | ** |
| 759 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 760 | uint32_t GKI_get_remaining_ticks (TIMER_LIST_Q *p_timer_listq, TIMER_LIST_ENT *p_target_tle) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 761 | { |
| 762 | TIMER_LIST_ENT *p_tle; |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 763 | uint32_t rem_ticks = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 764 | |
| 765 | if (p_target_tle->in_use) |
| 766 | { |
| 767 | p_tle = p_timer_listq->p_first; |
| 768 | |
| 769 | /* adding up all of ticks in previous entries */ |
| 770 | while ((p_tle)&&(p_tle != p_target_tle)) |
| 771 | { |
| 772 | rem_ticks += p_tle->ticks; |
| 773 | p_tle = p_tle->p_next; |
| 774 | } |
| 775 | |
| 776 | /* if found target entry */ |
| 777 | if (p_tle == p_target_tle) |
| 778 | { |
| 779 | rem_ticks += p_tle->ticks; |
| 780 | } |
| 781 | else |
| 782 | { |
| 783 | BT_ERROR_TRACE_0(TRACE_LAYER_GKI, "GKI_get_remaining_ticks: No timer entry in the list"); |
| 784 | return(0); |
| 785 | } |
| 786 | } |
| 787 | else |
| 788 | { |
| 789 | BT_ERROR_TRACE_0(TRACE_LAYER_GKI, "GKI_get_remaining_ticks: timer entry is not active"); |
| 790 | } |
| 791 | |
| 792 | return (rem_ticks); |
| 793 | } |
| 794 | |
| 795 | /******************************************************************************* |
| 796 | ** |
| 797 | ** Function GKI_add_to_timer_list |
| 798 | ** |
| 799 | ** Description This function is called by an application to add a timer |
| 800 | ** entry to a timer list. |
| 801 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 802 | ** Note: A timer value of '0' will effectively insert an |
| 803 | ** already expired event. Negative tick values will be |
| 804 | ** ignored. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 805 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 806 | ** Parameters p_timer_listq - (input) pointer to the timer list queue |
| 807 | ** object |
| 808 | ** p_tle - (input) pointer to a timer list queue entry |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 809 | ** |
| 810 | ** Returns void |
| 811 | ** |
| 812 | *******************************************************************************/ |
| 813 | void GKI_add_to_timer_list (TIMER_LIST_Q *p_timer_listq, TIMER_LIST_ENT *p_tle) |
| 814 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 815 | uint32_t nr_ticks_total; |
| 816 | uint8_t tt; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 817 | TIMER_LIST_ENT *p_temp; |
| 818 | if (p_tle == NULL || p_timer_listq == NULL) { |
| 819 | GKI_TRACE_3("%s: invalid argument %x, %x****************************<<", __func__, p_timer_listq, p_tle); |
| 820 | return; |
| 821 | } |
| 822 | |
| 823 | |
| 824 | /* Only process valid tick values */ |
| 825 | if (p_tle->ticks >= 0) |
| 826 | { |
| 827 | /* If this entry is the last in the list */ |
| 828 | if (p_tle->ticks >= p_timer_listq->last_ticks) |
| 829 | { |
| 830 | /* If this entry is the only entry in the list */ |
| 831 | if (p_timer_listq->p_first == NULL) |
| 832 | p_timer_listq->p_first = p_tle; |
| 833 | else |
| 834 | { |
| 835 | /* Insert the entry onto the end of the list */ |
| 836 | if (p_timer_listq->p_last != NULL) |
| 837 | p_timer_listq->p_last->p_next = p_tle; |
| 838 | |
| 839 | p_tle->p_prev = p_timer_listq->p_last; |
| 840 | } |
| 841 | |
| 842 | p_tle->p_next = NULL; |
| 843 | p_timer_listq->p_last = p_tle; |
| 844 | nr_ticks_total = p_tle->ticks; |
| 845 | p_tle->ticks -= p_timer_listq->last_ticks; |
| 846 | |
| 847 | p_timer_listq->last_ticks = nr_ticks_total; |
| 848 | } |
| 849 | else /* This entry needs to be inserted before the last entry */ |
| 850 | { |
| 851 | /* Find the entry that the new one needs to be inserted in front of */ |
| 852 | p_temp = p_timer_listq->p_first; |
| 853 | while (p_tle->ticks > p_temp->ticks) |
| 854 | { |
| 855 | /* Update the tick value if looking at an unexpired entry */ |
| 856 | if (p_temp->ticks > 0) |
| 857 | p_tle->ticks -= p_temp->ticks; |
| 858 | |
| 859 | p_temp = p_temp->p_next; |
| 860 | } |
| 861 | |
| 862 | /* The new entry is the first in the list */ |
| 863 | if (p_temp == p_timer_listq->p_first) |
| 864 | { |
| 865 | p_tle->p_next = p_timer_listq->p_first; |
| 866 | p_timer_listq->p_first->p_prev = p_tle; |
| 867 | p_timer_listq->p_first = p_tle; |
| 868 | } |
| 869 | else |
| 870 | { |
| 871 | p_temp->p_prev->p_next = p_tle; |
| 872 | p_tle->p_prev = p_temp->p_prev; |
| 873 | p_temp->p_prev = p_tle; |
| 874 | p_tle->p_next = p_temp; |
| 875 | } |
| 876 | p_temp->ticks -= p_tle->ticks; |
| 877 | } |
| 878 | |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 879 | p_tle->in_use = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 880 | |
| 881 | /* if we already add this timer queue to the array */ |
| 882 | for (tt = 0; tt < GKI_MAX_TIMER_QUEUES; tt++) |
| 883 | { |
| 884 | if (gki_cb.com.timer_queues[tt] == p_timer_listq) |
| 885 | return; |
| 886 | } |
| 887 | /* add this timer queue to the array */ |
| 888 | for (tt = 0; tt < GKI_MAX_TIMER_QUEUES; tt++) |
| 889 | { |
| 890 | if (gki_cb.com.timer_queues[tt] == NULL) |
| 891 | break; |
| 892 | } |
| 893 | if (tt < GKI_MAX_TIMER_QUEUES) |
| 894 | { |
| 895 | gki_cb.com.timer_queues[tt] = p_timer_listq; |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | return; |
| 900 | } |
| 901 | |
| 902 | |
| 903 | /******************************************************************************* |
| 904 | ** |
| 905 | ** Function GKI_remove_from_timer_list |
| 906 | ** |
| 907 | ** Description This function is called by an application to remove a timer |
| 908 | ** entry from a timer list. |
| 909 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 910 | ** Parameters p_timer_listq - (input) pointer to the timer list queue |
| 911 | ** object |
| 912 | ** p_tle - (input) pointer to a timer list queue entry |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 913 | ** |
| 914 | ** Returns void |
| 915 | ** |
| 916 | *******************************************************************************/ |
| 917 | void GKI_remove_from_timer_list (TIMER_LIST_Q *p_timer_listq, TIMER_LIST_ENT *p_tle) |
| 918 | { |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 919 | uint8_t tt; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 920 | |
| 921 | /* Verify that the entry is valid */ |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 922 | if (p_tle == NULL || p_tle->in_use == false || p_timer_listq->p_first == NULL) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 923 | { |
| 924 | return; |
| 925 | } |
| 926 | |
| 927 | /* Add the ticks remaining in this timer (if any) to the next guy in the list. |
| 928 | ** Note: Expired timers have a tick value of '0'. |
| 929 | */ |
| 930 | if (p_tle->p_next != NULL) |
| 931 | { |
| 932 | p_tle->p_next->ticks += p_tle->ticks; |
| 933 | } |
| 934 | else |
| 935 | { |
| 936 | p_timer_listq->last_ticks -= p_tle->ticks; |
| 937 | } |
| 938 | |
| 939 | /* Unlink timer from the list. |
| 940 | */ |
| 941 | if (p_timer_listq->p_first == p_tle) |
| 942 | { |
| 943 | p_timer_listq->p_first = p_tle->p_next; |
| 944 | |
| 945 | if (p_timer_listq->p_first != NULL) |
| 946 | p_timer_listq->p_first->p_prev = NULL; |
| 947 | |
| 948 | if (p_timer_listq->p_last == p_tle) |
| 949 | p_timer_listq->p_last = NULL; |
| 950 | } |
| 951 | else |
| 952 | { |
| 953 | if (p_timer_listq->p_last == p_tle) |
| 954 | { |
| 955 | p_timer_listq->p_last = p_tle->p_prev; |
| 956 | |
| 957 | if (p_timer_listq->p_last != NULL) |
| 958 | p_timer_listq->p_last->p_next = NULL; |
| 959 | } |
| 960 | else |
| 961 | { |
| 962 | if (p_tle->p_next != NULL && p_tle->p_next->p_prev == p_tle) |
| 963 | p_tle->p_next->p_prev = p_tle->p_prev; |
| 964 | else |
| 965 | { |
| 966 | /* Error case - chain messed up ?? */ |
| 967 | return; |
| 968 | } |
| 969 | |
| 970 | if (p_tle->p_prev != NULL && p_tle->p_prev->p_next == p_tle) |
| 971 | p_tle->p_prev->p_next = p_tle->p_next; |
| 972 | else |
| 973 | { |
| 974 | /* Error case - chain messed up ?? */ |
| 975 | return; |
| 976 | } |
| 977 | } |
| 978 | } |
| 979 | |
| 980 | p_tle->p_next = p_tle->p_prev = NULL; |
| 981 | p_tle->ticks = GKI_UNUSED_LIST_ENTRY; |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 982 | p_tle->in_use = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 983 | |
| 984 | /* if timer queue is empty */ |
| 985 | if (p_timer_listq->p_first == NULL && p_timer_listq->p_last == NULL) |
| 986 | { |
| 987 | for (tt = 0; tt < GKI_MAX_TIMER_QUEUES; tt++) |
| 988 | { |
| 989 | if (gki_cb.com.timer_queues[tt] == p_timer_listq) |
| 990 | { |
| 991 | gki_cb.com.timer_queues[tt] = NULL; |
| 992 | break; |
| 993 | } |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | return; |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | /******************************************************************************* |
| 1002 | ** |
| 1003 | ** Function gki_adjust_timer_count |
| 1004 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 1005 | ** Description This function is called whenever a new timer or GKI_wait |
| 1006 | ** occurs to adjust (if necessary) the current time til the |
| 1007 | ** first expiration. This only needs to make an adjustment if |
| 1008 | ** the new timer (in ticks) is less than the number of ticks |
| 1009 | ** remaining on the current timer. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1010 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 1011 | ** Parameters: ticks - (input) number of system ticks of the new timer |
| 1012 | ** entry |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1013 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame^] | 1014 | ** NOTE: This routine MUST be called while interrupts are |
| 1015 | ** disabled to avoid updates while adjusting the timer |
| 1016 | ** variables. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1017 | ** |
| 1018 | ** Returns void |
| 1019 | ** |
| 1020 | *******************************************************************************/ |
Ruchi Kandoi | 512ee63 | 2017-01-03 13:59:10 -0800 | [diff] [blame] | 1021 | void gki_adjust_timer_count (int32_t ticks) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1022 | { |
| 1023 | if (ticks > 0) |
| 1024 | { |
| 1025 | /* See if the new timer expires before the current first expiration */ |
| 1026 | if (gki_cb.com.OSNumOrigTicks == 0 || (ticks < gki_cb.com.OSTicksTilExp && gki_cb.com.OSTicksTilExp > 0)) |
| 1027 | { |
| 1028 | gki_cb.com.OSNumOrigTicks = (gki_cb.com.OSNumOrigTicks - gki_cb.com.OSTicksTilExp) + ticks; |
| 1029 | gki_cb.com.OSTicksTilExp = ticks; |
| 1030 | } |
| 1031 | } |
| 1032 | |
| 1033 | return; |
| 1034 | } |