gki_ulinux.c revision f943de946927e29d42a3190660b0bf0e567fbaf8
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 <stdio.h> 19#include <stdarg.h> 20#include <errno.h> 21 22#define GKI_DEBUG FALSE 23 24#include <pthread.h> /* must be 1st header defined */ 25#include <time.h> 26#include "gki_int.h" 27#include "gki_target.h" 28 29/* Temp android logging...move to android tgt config file */ 30 31#ifndef LINUX_NATIVE 32#include <cutils/log.h> 33#else 34#define LOGV(format, ...) fprintf (stdout, LOG_TAG format, ## __VA_ARGS__) 35#define LOGE(format, ...) fprintf (stderr, LOG_TAG format, ## __VA_ARGS__) 36#define LOGI(format, ...) fprintf (stdout, LOG_TAG format, ## __VA_ARGS__) 37 38#define SCHED_NORMAL 0 39#define SCHED_FIFO 1 40#define SCHED_RR 2 41#define SCHED_BATCH 3 42 43#define pthread_cond_timedwait_monotonic pthread_cond_timedwait 44 45#endif 46 47/* Define the structure that holds the GKI variables 48*/ 49#if GKI_DYNAMIC_MEMORY == FALSE 50tGKI_CB gki_cb; 51#endif 52 53#define NANOSEC_PER_MILLISEC (1000000) 54#define NSEC_PER_SEC (1000*NANOSEC_PER_MILLISEC) 55 56/* works only for 1ms to 1000ms heart beat ranges */ 57#define LINUX_SEC (1000/TICKS_PER_SEC) 58// #define GKI_TICK_TIMER_DEBUG 59 60#define LOCK(m) pthread_mutex_lock(&m) 61#define UNLOCK(m) pthread_mutex_unlock(&m) 62#define INIT(m) pthread_mutex_init(&m, NULL) 63 64 65/* this kind of mutex go into tGKI_OS control block!!!! */ 66/* static pthread_mutex_t GKI_sched_mutex; */ 67/*static pthread_mutex_t thread_delay_mutex; 68static pthread_cond_t thread_delay_cond; 69static pthread_mutex_t gki_timer_update_mutex; 70static pthread_cond_t gki_timer_update_cond; 71*/ 72#ifdef NO_GKI_RUN_RETURN 73static pthread_t timer_thread_id = 0; 74#endif 75 76 77/* For Android */ 78 79#ifndef GKI_SHUTDOWN_EVT 80#define GKI_SHUTDOWN_EVT APPL_EVT_7 81#endif 82 83typedef struct 84{ 85 UINT8 task_id; /* GKI task id */ 86 TASKPTR task_entry; /* Task entry function*/ 87 UINT32 params; /* Extra params to pass to task entry function */ 88 pthread_cond_t* pCond; /* for android*/ 89 pthread_mutex_t* pMutex; /* for android*/ 90} gki_pthread_info_t; 91gki_pthread_info_t gki_pthread_info[GKI_MAX_TASKS]; 92 93/******************************************************************************* 94** 95** Function gki_task_entry 96** 97** Description entry point of GKI created tasks 98** 99** Returns void 100** 101*******************************************************************************/ 102void gki_task_entry(UINT32 params) 103{ 104 pthread_t thread_id = pthread_self(); 105 gki_pthread_info_t *p_pthread_info = (gki_pthread_info_t *)params; 106 GKI_TRACE_5("gki_task_entry task_id=%i, thread_id=%x/%x, pCond/pMutex=%x/%x", p_pthread_info->task_id, 107 gki_cb.os.thread_id[p_pthread_info->task_id], pthread_self(), 108 p_pthread_info->pCond, p_pthread_info->pMutex); 109 110 gki_cb.os.thread_id[p_pthread_info->task_id] = thread_id; 111 /* Call the actual thread entry point */ 112 (p_pthread_info->task_entry)(p_pthread_info->params); 113 114 GKI_TRACE_1("gki_task task_id=%i terminating", p_pthread_info->task_id); 115 gki_cb.os.thread_id[p_pthread_info->task_id] = 0; 116 117 pthread_exit(0); /* GKI tasks have no return value */ 118} 119/* end android */ 120 121#ifndef ANDROID 122void GKI_TRACE(char *fmt, ...) 123{ 124 LOCK(gki_cb.os.GKI_trace_mutex); 125 va_list ap; 126 127 va_start(ap, fmt); 128 vfprintf(stderr, fmt, ap); 129 fprintf(stderr, "\n"); 130 131 va_end(ap); 132 UNLOCK(gki_cb.os.GKI_trace_mutex); 133} 134#endif 135 136/******************************************************************************* 137** 138** Function GKI_init 139** 140** Description This function is called once at startup to initialize 141** all the timer structures. 142** 143** Returns void 144** 145*******************************************************************************/ 146 147void GKI_init(void) 148{ 149 pthread_mutexattr_t attr; 150 tGKI_OS *p_os; 151 152 memset (&gki_cb, 0, sizeof (gki_cb)); 153 154 gki_buffer_init(); 155 gki_timers_init(); 156 gki_cb.com.OSTicks = (UINT32) times(0); 157 158 pthread_mutexattr_init(&attr); 159 160#ifndef __CYGWIN__ 161 pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP); 162#endif 163 p_os = &gki_cb.os; 164 pthread_mutex_init(&p_os->GKI_mutex, &attr); 165 /* pthread_mutex_init(&GKI_sched_mutex, NULL); */ 166#if (GKI_DEBUG == TRUE) 167 pthread_mutex_init(&p_os->GKI_trace_mutex, NULL); 168#endif 169 /* pthread_mutex_init(&thread_delay_mutex, NULL); */ /* used in GKI_delay */ 170 /* pthread_cond_init (&thread_delay_cond, NULL); */ 171 172 /* Initialiase GKI_timer_update suspend variables & mutexes to be in running state. 173 * this works too even if GKI_NO_TICK_STOP is defined in btld.txt */ 174 p_os->no_timer_suspend = GKI_TIMER_TICK_RUN_COND; 175 pthread_mutex_init(&p_os->gki_timer_mutex, NULL); 176 pthread_cond_init(&p_os->gki_timer_cond, NULL); 177} 178 179 180/******************************************************************************* 181** 182** Function GKI_get_os_tick_count 183** 184** Description This function is called to retrieve the native OS system tick. 185** 186** Returns Tick count of native OS. 187** 188*******************************************************************************/ 189UINT32 GKI_get_os_tick_count(void) 190{ 191 192 /* TODO - add any OS specific code here 193 **/ 194 return (gki_cb.com.OSTicks); 195} 196 197/******************************************************************************* 198** 199** Function GKI_create_task 200** 201** Description This function is called to create a new OSS task. 202** 203** Parameters: task_entry - (input) pointer to the entry function of the task 204** task_id - (input) Task id is mapped to priority 205** taskname - (input) name given to the task 206** stack - (input) pointer to the top of the stack (highest memory location) 207** stacksize - (input) size of the stack allocated for the task 208** 209** Returns GKI_SUCCESS if all OK, GKI_FAILURE if any problem 210** 211** NOTE This function take some parameters that may not be needed 212** by your particular OS. They are here for compatability 213** of the function prototype. 214** 215*******************************************************************************/ 216UINT8 GKI_create_task (TASKPTR task_entry, UINT8 task_id, INT8 *taskname, UINT16 *stack, UINT16 stacksize, void* pCondVar, void* pMutex) 217{ 218 UINT16 i; 219 UINT8 *p; 220 struct sched_param param; 221 int policy, ret = 0; 222 pthread_attr_t attr1; 223 224 GKI_TRACE_5 ("GKI_create_task func=0x%x id=%d name=%s stack=0x%x stackSize=%d", task_entry, task_id, taskname, stack, stacksize); 225 226 if (task_id >= GKI_MAX_TASKS) 227 { 228 GKI_TRACE_0("Error! task ID > max task allowed"); 229 return (GKI_FAILURE); 230 } 231 232 233 gki_cb.com.OSRdyTbl[task_id] = TASK_READY; 234 gki_cb.com.OSTName[task_id] = taskname; 235 gki_cb.com.OSWaitTmr[task_id] = 0; 236 gki_cb.com.OSWaitEvt[task_id] = 0; 237 238 /* Initialize mutex and condition variable objects for events and timeouts */ 239 pthread_mutex_init(&gki_cb.os.thread_evt_mutex[task_id], NULL); 240 pthread_cond_init (&gki_cb.os.thread_evt_cond[task_id], NULL); 241 pthread_mutex_init(&gki_cb.os.thread_timeout_mutex[task_id], NULL); 242 pthread_cond_init (&gki_cb.os.thread_timeout_cond[task_id], NULL); 243 244 pthread_attr_init(&attr1); 245 /* by default, pthread creates a joinable thread */ 246#if ( FALSE == GKI_PTHREAD_JOINABLE ) 247 pthread_attr_setdetachstate(&attr1, PTHREAD_CREATE_DETACHED); 248 249 GKI_TRACE_3("GKI creating task %i, pCond/pMutex=%x/%x", task_id, pCondVar, pMutex); 250#else 251 GKI_TRACE_1("GKI creating JOINABLE task %i", task_id); 252#endif 253 254 /* On Android, the new tasks starts running before 'gki_cb.os.thread_id[task_id]' is initialized */ 255 /* Pass task_id to new task so it can initialize gki_cb.os.thread_id[task_id] for it calls GKI_wait */ 256 gki_pthread_info[task_id].task_id = task_id; 257 gki_pthread_info[task_id].task_entry = task_entry; 258 gki_pthread_info[task_id].params = 0; 259 gki_pthread_info[task_id].pCond = (pthread_cond_t*)pCondVar; 260 gki_pthread_info[task_id].pMutex = (pthread_mutex_t*)pMutex; 261 262 ret = pthread_create( &gki_cb.os.thread_id[task_id], 263 &attr1, 264 (void *)gki_task_entry, 265 &gki_pthread_info[task_id]); 266 267 if (ret != 0) 268 { 269 GKI_TRACE_2("pthread_create failed(%d), %s!", ret, taskname); 270 return GKI_FAILURE; 271 } 272 273 if(pthread_getschedparam(gki_cb.os.thread_id[task_id], &policy, ¶m)==0) 274 { 275#if defined(PBS_SQL_TASK) 276 if (task_id == PBS_SQL_TASK) 277 { 278 GKI_TRACE_0("PBS SQL lowest priority task"); 279 policy = SCHED_NORMAL; 280 } 281 else 282#endif 283 { 284 policy = SCHED_RR; 285 param.sched_priority = 30 - task_id - 2; 286 } 287 pthread_setschedparam(gki_cb.os.thread_id[task_id], policy, ¶m); 288 } 289 290 GKI_TRACE_6( "Leaving GKI_create_task %x %d %x %s %x %d", 291 task_entry, 292 task_id, 293 gki_cb.os.thread_id[task_id], 294 taskname, 295 stack, 296 stacksize); 297 298 return (GKI_SUCCESS); 299} 300 301/******************************************************************************* 302** 303** Function GKI_shutdown 304** 305** Description shutdowns the GKI tasks/threads in from max task id to 0 and frees 306** pthread resources! 307** IMPORTANT: in case of join method, GKI_shutdown must be called outside 308** a GKI thread context! 309** 310** Returns void 311** 312*******************************************************************************/ 313#define WAKE_LOCK_ID "brcm_nfca" 314#define PARTIAL_WAKE_LOCK 1 315extern int acquire_wake_lock(int lock, const char* id); 316extern int release_wake_lock(const char* id); 317 318void GKI_shutdown(void) 319{ 320 UINT8 task_id; 321 volatile int *p_run_cond = &gki_cb.os.no_timer_suspend; 322 int oldCOnd = 0; 323#if ( FALSE == GKI_PTHREAD_JOINABLE ) 324 int i = 0; 325#else 326 int result; 327#endif 328 329 /* release threads and set as TASK_DEAD. going from low to high priority fixes 330 * GKI_exception problem due to btu->hci sleep request events */ 331 for (task_id = GKI_MAX_TASKS; task_id > 0; task_id--) 332 { 333 if (gki_cb.com.OSRdyTbl[task_id - 1] != TASK_DEAD) 334 { 335 gki_cb.com.OSRdyTbl[task_id - 1] = TASK_DEAD; 336 337 /* paranoi settings, make sure that we do not execute any mailbox events */ 338 gki_cb.com.OSWaitEvt[task_id-1] &= ~(TASK_MBOX_0_EVT_MASK|TASK_MBOX_1_EVT_MASK| 339 TASK_MBOX_2_EVT_MASK|TASK_MBOX_3_EVT_MASK); 340 GKI_send_event(task_id - 1, EVENT_MASK(GKI_SHUTDOWN_EVT)); 341 342#if ( FALSE == GKI_PTHREAD_JOINABLE ) 343 i = 0; 344 345 while ((gki_cb.com.OSWaitEvt[task_id - 1] != 0) && (++i < 10)) 346 usleep(100 * 1000); 347#else 348 /* wait for proper Arnold Schwarzenegger task state */ 349 result = pthread_join( gki_cb.os.thread_id[task_id-1], NULL ); 350 if ( result < 0 ) 351 { 352 GKI_TRACE_1( "pthread_join() FAILED: result: %d", result ); 353 } 354#endif 355 GKI_TRACE_1( "GKI_shutdown(): task %s dead", gki_cb.com.OSTName[task_id]); 356 GKI_exit_task(task_id - 1); 357 } 358 } 359 360 /* Destroy mutex and condition variable objects */ 361 pthread_mutex_destroy(&gki_cb.os.GKI_mutex); 362 /* pthread_mutex_destroy(&GKI_sched_mutex); */ 363#if (GKI_DEBUG == TRUE) 364 pthread_mutex_destroy(&gki_cb.os.GKI_trace_mutex); 365#endif 366 /* pthread_mutex_destroy(&thread_delay_mutex); 367 pthread_cond_destroy (&thread_delay_cond); */ 368#if ( FALSE == GKI_PTHREAD_JOINABLE ) 369 i = 0; 370#endif 371 372#ifdef NO_GKI_RUN_RETURN 373 shutdown_timer = 1; 374#endif 375 if (gki_cb.os.gki_timer_wake_lock_on) 376 { 377 GKI_TRACE_0("GKI_shutdown : release_wake_lock(brcm_btld)"); 378 release_wake_lock(WAKE_LOCK_ID); 379 gki_cb.os.gki_timer_wake_lock_on = 0; 380 } 381 oldCOnd = *p_run_cond; 382 *p_run_cond = GKI_TIMER_TICK_EXIT_COND; 383 if (oldCOnd == GKI_TIMER_TICK_STOP_COND) 384 pthread_cond_signal( &gki_cb.os.gki_timer_cond ); 385 386} 387 388/******************************************************************************* 389 ** 390 ** Function GKI_run 391 ** 392 ** Description This function runs a task 393 ** 394 ** Parameters: start: TRUE start system tick (again), FALSE stop 395 ** 396 ** Returns void 397 ** 398 *********************************************************************************/ 399void gki_system_tick_start_stop_cback(BOOLEAN start) 400{ 401 tGKI_OS *p_os = &gki_cb.os; 402 volatile int *p_run_cond = &p_os->no_timer_suspend; 403 volatile static int wake_lock_count; 404 if ( FALSE == start ) 405 { 406 /* this can lead to a race condition. however as we only read this variable in the timer loop 407 * we should be fine with this approach. otherwise uncomment below mutexes. 408 */ 409 /* GKI_disable(); */ 410 *p_run_cond = GKI_TIMER_TICK_STOP_COND; 411 /* GKI_enable(); */ 412#ifdef GKI_TICK_TIMER_DEBUG 413 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> STOP GKI_timer_update(), wake_lock_count:%d", --wake_lock_count); 414#endif 415 release_wake_lock(WAKE_LOCK_ID); 416 gki_cb.os.gki_timer_wake_lock_on = 0; 417 } 418 else 419 { 420 /* restart GKI_timer_update() loop */ 421 acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); 422 gki_cb.os.gki_timer_wake_lock_on = 1; 423 *p_run_cond = GKI_TIMER_TICK_RUN_COND; 424 pthread_mutex_lock( &p_os->gki_timer_mutex ); 425 pthread_cond_signal( &p_os->gki_timer_cond ); 426 pthread_mutex_unlock( &p_os->gki_timer_mutex ); 427 428#ifdef GKI_TICK_TIMER_DEBUG 429 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> START GKI_timer_update(), wake_lock_count:%d", ++wake_lock_count ); 430#endif 431 } 432} 433 434 435/******************************************************************************* 436** 437** Function timer_thread 438** 439** Description Timer thread 440** 441** Parameters: id - (input) timer ID 442** 443** Returns void 444** 445*********************************************************************************/ 446#ifdef NO_GKI_RUN_RETURN 447void timer_thread(signed long id) 448{ 449 GKI_TRACE_1("%s enter", __func__); 450 struct timespec delay; 451 int timeout = 1000; /* 10 ms per system tick */ 452 int err; 453 454 while(!shutdown_timer) 455 { 456 delay.tv_sec = timeout / 1000; 457 delay.tv_nsec = 1000 * 1000 * (timeout%1000); 458 459 /* [u]sleep can't be used because it uses SIGALRM */ 460 461 do 462 { 463 err = nanosleep(&delay, &delay); 464 } while (err < 0 && errno ==EINTR); 465 466 GKI_timer_update(1); 467 } 468 GKI_TRACE_1("%s exit", __func__); 469 pthread_exit(NULL); 470} 471#endif 472 473/******************************************************************************* 474** 475** Function GKI_run 476** 477** Description This function runs a task 478** 479** Parameters: p_task_id - (input) pointer to task id 480** 481** Returns void 482** 483** NOTE This function is only needed for operating systems where 484** starting a task is a 2-step process. Most OS's do it in 485** one step, If your OS does it in one step, this function 486** should be empty. 487*********************************************************************************/ 488void GKI_run (void *p_task_id) 489{ 490 GKI_TRACE_1("%s enter", __func__); 491 struct timespec delay; 492 int err = 0; 493 volatile int * p_run_cond = &gki_cb.os.no_timer_suspend; 494 495#ifndef GKI_NO_TICK_STOP 496 /* register start stop function which disable timer loop in GKI_run() when no timers are 497 * in any GKI/BTA/BTU this should save power when BTLD is idle! */ 498 GKI_timer_queue_register_callback( gki_system_tick_start_stop_cback ); 499 APPL_TRACE_DEBUG0( "GKI_run(): Start/Stop GKI_timer_update_registered!" ); 500#endif 501 502#ifdef NO_GKI_RUN_RETURN 503 GKI_TRACE_0("GKI_run == NO_GKI_RUN_RETURN"); 504 pthread_attr_t timer_attr; 505 506 shutdown_timer = 0; 507 508 pthread_attr_init(&timer_attr); 509 pthread_attr_setdetachstate(&timer_attr, PTHREAD_CREATE_DETACHED); 510 if (pthread_create( &timer_thread_id, 511 &timer_attr, 512 timer_thread, 513 NULL) != 0 ) 514 { 515 GKI_TRACE_0("GKI_run: pthread_create failed to create timer_thread!"); 516 return GKI_FAILURE; 517 } 518#else 519 GKI_TRACE_2("GKI_run, run_cond(%x)=%d ", p_run_cond, *p_run_cond); 520 for (;GKI_TIMER_TICK_EXIT_COND != *p_run_cond;) 521 { 522 do 523 { 524 /* adjust hear bit tick in btld by changning TICKS_PER_SEC!!!!! this formula works only for 525 * 1-1000ms heart beat units! */ 526 delay.tv_sec = LINUX_SEC / 1000; 527 delay.tv_nsec = 1000 * 1000 * (LINUX_SEC % 1000); 528 529 /* [u]sleep can't be used because it uses SIGALRM */ 530 do 531 { 532 err = nanosleep(&delay, &delay); 533 } while (err < 0 && errno == EINTR); 534 535 if (GKI_TIMER_TICK_RUN_COND != *p_run_cond) 536 break; //GKI has shutdown 537 538 /* the unit should be alsways 1 (1 tick). only if you vary for some reason heart beat tick 539 * e.g. power saving you may want to provide more ticks 540 */ 541 GKI_timer_update( 1 ); 542 /* BT_TRACE_2( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, "update: tv_sec: %d, tv_nsec: %d", delay.tv_sec, delay.tv_nsec ); */ 543 } while ( GKI_TIMER_TICK_RUN_COND == *p_run_cond); 544 545 /* currently on reason to exit above loop is no_timer_suspend == GKI_TIMER_TICK_STOP_COND 546 * block timer main thread till re-armed by */ 547#ifdef GKI_TICK_TIMER_DEBUG 548 BT_TRACE_0( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> SUSPENDED GKI_timer_update()" ); 549#endif 550 if (GKI_TIMER_TICK_EXIT_COND != *p_run_cond) { 551 GKI_TRACE_1("%s waiting timer mutex", __func__); 552 pthread_mutex_lock( &gki_cb.os.gki_timer_mutex ); 553 pthread_cond_wait( &gki_cb.os.gki_timer_cond, &gki_cb.os.gki_timer_mutex ); 554 pthread_mutex_unlock( &gki_cb.os.gki_timer_mutex ); 555 GKI_TRACE_1("%s exited timer mutex", __func__); 556 } 557 /* potentially we need to adjust os gki_cb.com.OSTicks */ 558 559#ifdef GKI_TICK_TIMER_DEBUG 560 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> RESTARTED GKI_timer_update(): run_cond: %d", 561 *p_run_cond ); 562#endif 563 } /* for */ 564#endif 565 GKI_TRACE_1("%s exit", __func__); 566} 567 568 569/******************************************************************************* 570** 571** Function GKI_stop 572** 573** Description This function is called to stop 574** the tasks and timers when the system is being stopped 575** 576** Returns void 577** 578** NOTE This function is NOT called by the Widcomm stack and 579** profiles. If you want to use it in your own implementation, 580** put specific code here. 581** 582*******************************************************************************/ 583void GKI_stop (void) 584{ 585 UINT8 task_id; 586 587 /* gki_queue_timer_cback(FALSE); */ 588 /* TODO - add code here if needed*/ 589 590 for(task_id = 0; task_id<GKI_MAX_TASKS; task_id++) 591 { 592 if(gki_cb.com.OSRdyTbl[task_id] != TASK_DEAD) 593 { 594 GKI_exit_task(task_id); 595 } 596 } 597} 598 599 600/******************************************************************************* 601** 602** Function GKI_wait 603** 604** Description This function is called by tasks to wait for a specific 605** event or set of events. The task may specify the duration 606** that it wants to wait for, or 0 if infinite. 607** 608** Parameters: flag - (input) the event or set of events to wait for 609** timeout - (input) the duration that the task wants to wait 610** for the specific events (in system ticks) 611** 612** 613** Returns the event mask of received events or zero if timeout 614** 615*******************************************************************************/ 616UINT16 GKI_wait (UINT16 flag, UINT32 timeout) 617{ 618 UINT16 evt; 619 UINT8 rtask; 620 struct timespec abstime = { 0, 0 }; 621 int sec; 622 int nano_sec; 623 624 rtask = GKI_get_taskid(); 625 GKI_TRACE_3("GKI_wait %d %x %d", rtask, flag, timeout); 626 if (rtask >= GKI_MAX_TASKS) { 627 pthread_exit(NULL); 628 return 0; 629 } 630 631 gki_pthread_info_t* p_pthread_info = &gki_pthread_info[rtask]; 632 if (p_pthread_info->pCond != NULL && p_pthread_info->pMutex != NULL) { 633 int ret; 634 GKI_TRACE_3("GKI_wait task=%i, pCond/pMutex = %x/%x", rtask, p_pthread_info->pCond, p_pthread_info->pMutex); 635 ret = pthread_mutex_lock(p_pthread_info->pMutex); 636 ret = pthread_cond_signal(p_pthread_info->pCond); 637 ret = pthread_mutex_unlock(p_pthread_info->pMutex); 638 p_pthread_info->pMutex = NULL; 639 p_pthread_info->pCond = NULL; 640 } 641 gki_cb.com.OSWaitForEvt[rtask] = flag; 642 643 /* protect OSWaitEvt[rtask] from modification from an other thread */ 644 pthread_mutex_lock(&gki_cb.os.thread_evt_mutex[rtask]); 645 646#if 0 /* for clean scheduling we probably should always call pthread_cond_wait() */ 647 /* Check if anything in any of the mailboxes. There is a potential race condition where OSTaskQFirst[rtask] 648 has been modified. however this should only result in addtional call to pthread_cond_wait() but as 649 the cond is met, it will exit immediately (depending on schedulling) */ 650 if (gki_cb.com.OSTaskQFirst[rtask][0]) 651 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_0_EVT_MASK; 652 if (gki_cb.com.OSTaskQFirst[rtask][1]) 653 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_1_EVT_MASK; 654 if (gki_cb.com.OSTaskQFirst[rtask][2]) 655 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_2_EVT_MASK; 656 if (gki_cb.com.OSTaskQFirst[rtask][3]) 657 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_3_EVT_MASK; 658#endif 659 660 if (!(gki_cb.com.OSWaitEvt[rtask] & flag)) 661 { 662 if (timeout) 663 { 664 // timeout = GKI_MS_TO_TICKS(timeout); /* convert from milliseconds to ticks */ 665 666 /* get current system time */ 667 // clock_gettime(CLOCK_MONOTONIC, &currSysTime); 668 // abstime.tv_sec = currSysTime.time; 669 // abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm; 670 clock_gettime(CLOCK_MONOTONIC, &abstime); 671 672 /* add timeout */ 673 sec = timeout / 1000; 674 nano_sec = (timeout % 1000) * NANOSEC_PER_MILLISEC; 675 abstime.tv_nsec += nano_sec; 676 if (abstime.tv_nsec > NSEC_PER_SEC) 677 { 678 abstime.tv_sec += (abstime.tv_nsec / NSEC_PER_SEC); 679 abstime.tv_nsec = abstime.tv_nsec % NSEC_PER_SEC; 680 } 681 abstime.tv_sec += sec; 682 683 pthread_cond_timedwait_monotonic(&gki_cb.os.thread_evt_cond[rtask], 684 &gki_cb.os.thread_evt_mutex[rtask], &abstime); 685 686 } 687 else 688 { 689 pthread_cond_wait(&gki_cb.os.thread_evt_cond[rtask], &gki_cb.os.thread_evt_mutex[rtask]); 690 } 691 692 /* TODO: check, this is probably neither not needed depending on phtread_cond_wait() implmentation, 693 e.g. it looks like it is implemented as a counter in which case multiple cond_signal 694 should NOT be lost! */ 695 // we are waking up after waiting for some events, so refresh variables 696 // no need to call GKI_disable() here as we know that we will have some events as we've been waking up after condition pending or timeout 697 if (gki_cb.com.OSTaskQFirst[rtask][0]) 698 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_0_EVT_MASK; 699 if (gki_cb.com.OSTaskQFirst[rtask][1]) 700 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_1_EVT_MASK; 701 if (gki_cb.com.OSTaskQFirst[rtask][2]) 702 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_2_EVT_MASK; 703 if (gki_cb.com.OSTaskQFirst[rtask][3]) 704 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_3_EVT_MASK; 705 706 if (gki_cb.com.OSRdyTbl[rtask] == TASK_DEAD) 707 { 708 gki_cb.com.OSWaitEvt[rtask] = 0; 709 /* unlock thread_evt_mutex as pthread_cond_wait() does auto lock when cond is met */ 710 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[rtask]); 711 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, "GKI TASK_DEAD received. exit thread %d...", rtask ); 712 713 gki_cb.os.thread_id[rtask] = 0; 714 pthread_exit(NULL); 715 return (EVENT_MASK(GKI_SHUTDOWN_EVT)); 716 } 717 } 718 719 /* Clear the wait for event mask */ 720 gki_cb.com.OSWaitForEvt[rtask] = 0; 721 722 /* Return only those bits which user wants... */ 723 evt = gki_cb.com.OSWaitEvt[rtask] & flag; 724 725 /* Clear only those bits which user wants... */ 726 gki_cb.com.OSWaitEvt[rtask] &= ~flag; 727 728 /* unlock thread_evt_mutex as pthread_cond_wait() does auto lock mutex when cond is met */ 729 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[rtask]); 730 GKI_TRACE_4("GKI_wait %d %x %d %x resumed", rtask, flag, timeout, evt); 731 732 return (evt); 733} 734 735 736/******************************************************************************* 737** 738** Function GKI_delay 739** 740** Description This function is called by tasks to sleep unconditionally 741** for a specified amount of time. The duration is in milliseconds 742** 743** Parameters: timeout - (input) the duration in milliseconds 744** 745** Returns void 746** 747*******************************************************************************/ 748 749void GKI_delay (UINT32 timeout) 750{ 751 UINT8 rtask = GKI_get_taskid(); 752 struct timespec delay; 753 int err; 754 755 GKI_TRACE_2("GKI_delay %d %d", rtask, timeout); 756 757 delay.tv_sec = timeout / 1000; 758 delay.tv_nsec = 1000 * 1000 * (timeout%1000); 759 760 /* [u]sleep can't be used because it uses SIGALRM */ 761 762 do { 763 err = nanosleep(&delay, &delay); 764 } while (err < 0 && errno ==EINTR); 765 766 /* Check if task was killed while sleeping */ 767 /* NOTE 768 ** if you do not implement task killing, you do not 769 ** need this check. 770 */ 771 if (rtask && gki_cb.com.OSRdyTbl[rtask] == TASK_DEAD) 772 { 773 } 774 775 GKI_TRACE_2("GKI_delay %d %d done", rtask, timeout); 776 return; 777} 778 779 780/******************************************************************************* 781** 782** Function GKI_send_event 783** 784** Description This function is called by tasks to send events to other 785** tasks. Tasks can also send events to themselves. 786** 787** Parameters: task_id - (input) The id of the task to which the event has to 788** be sent 789** event - (input) The event that has to be sent 790** 791** 792** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 793** 794*******************************************************************************/ 795UINT8 GKI_send_event (UINT8 task_id, UINT16 event) 796{ 797 GKI_TRACE_2("GKI_send_event %d %x", task_id, event); 798 799 /* use efficient coding to avoid pipeline stalls */ 800 if (task_id < GKI_MAX_TASKS) 801 { 802 /* protect OSWaitEvt[task_id] from manipulation in GKI_wait() */ 803 pthread_mutex_lock(&gki_cb.os.thread_evt_mutex[task_id]); 804 805 /* Set the event bit */ 806 gki_cb.com.OSWaitEvt[task_id] |= event; 807 808 pthread_cond_signal(&gki_cb.os.thread_evt_cond[task_id]); 809 810 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[task_id]); 811 812 GKI_TRACE_2("GKI_send_event %d %x done", task_id, event); 813 return ( GKI_SUCCESS ); 814 } 815 return (GKI_FAILURE); 816} 817 818 819/******************************************************************************* 820** 821** Function GKI_isend_event 822** 823** Description This function is called from ISRs to send events to other 824** tasks. The only difference between this function and GKI_send_event 825** is that this function assumes interrupts are already disabled. 826** 827** Parameters: task_id - (input) The destination task Id for the event. 828** event - (input) The event flag 829** 830** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 831** 832** NOTE This function is NOT called by the Widcomm stack and 833** profiles. If you want to use it in your own implementation, 834** put your code here, otherwise you can delete the entire 835** body of the function. 836** 837*******************************************************************************/ 838UINT8 GKI_isend_event (UINT8 task_id, UINT16 event) 839{ 840 841 GKI_TRACE_2("GKI_isend_event %d %x", task_id, event); 842 GKI_TRACE_2("GKI_isend_event %d %x done", task_id, event); 843 return GKI_send_event(task_id, event); 844} 845 846 847/******************************************************************************* 848** 849** Function GKI_get_taskid 850** 851** Description This function gets the currently running task ID. 852** 853** Returns task ID 854** 855** NOTE The Widcomm upper stack and profiles may run as a single task. 856** If you only have one GKI task, then you can hard-code this 857** function to return a '1'. Otherwise, you should have some 858** OS-specific method to determine the current task. 859** 860*******************************************************************************/ 861UINT8 GKI_get_taskid (void) 862{ 863 int i; 864 865 pthread_t thread_id = pthread_self( ); 866 for (i = 0; i < GKI_MAX_TASKS; i++) { 867 if (gki_cb.os.thread_id[i] == thread_id) { 868 GKI_TRACE_2("GKI_get_taskid %x %d done", thread_id, i); 869 return(i); 870 } 871 } 872 873 GKI_TRACE_1("GKI_get_taskid: thread id = %x, task id = -1", thread_id); 874 875 return(-1); 876} 877 878/******************************************************************************* 879** 880** Function GKI_map_taskname 881** 882** Description This function gets the task name of the taskid passed as arg. 883** If GKI_MAX_TASKS is passed as arg the currently running task 884** name is returned 885** 886** Parameters: task_id - (input) The id of the task whose name is being 887** sought. GKI_MAX_TASKS is passed to get the name of the 888** currently running task. 889** 890** Returns pointer to task name 891** 892** NOTE this function needs no customization 893** 894*******************************************************************************/ 895INT8 *GKI_map_taskname (UINT8 task_id) 896{ 897 GKI_TRACE_1("GKI_map_taskname %d", task_id); 898 899 if (task_id < GKI_MAX_TASKS) 900 { 901 GKI_TRACE_2("GKI_map_taskname %d %s done", task_id, gki_cb.com.OSTName[task_id]); 902 return (gki_cb.com.OSTName[task_id]); 903 } 904 else if (task_id == GKI_MAX_TASKS ) 905 { 906 return (gki_cb.com.OSTName[GKI_get_taskid()]); 907 } 908 else 909 { 910 return "BAD"; 911 } 912} 913 914 915/******************************************************************************* 916** 917** Function GKI_enable 918** 919** Description This function enables interrupts. 920** 921** Returns void 922** 923*******************************************************************************/ 924void GKI_enable (void) 925{ 926 GKI_TRACE_0("GKI_enable"); 927 pthread_mutex_unlock(&gki_cb.os.GKI_mutex); 928/* pthread_mutex_xx is nesting save, no need for this: already_disabled = 0; */ 929 GKI_TRACE_0("Leaving GKI_enable"); 930 return; 931} 932 933 934/******************************************************************************* 935** 936** Function GKI_disable 937** 938** Description This function disables interrupts. 939** 940** Returns void 941** 942*******************************************************************************/ 943 944void GKI_disable (void) 945{ 946 //GKI_TRACE_0("GKI_disable"); 947 948/* pthread_mutex_xx is nesting save, no need for this: if (!already_disabled) { 949 already_disabled = 1; */ 950 pthread_mutex_lock(&gki_cb.os.GKI_mutex); 951/* } */ 952 //GKI_TRACE_0("Leaving GKI_disable"); 953 return; 954} 955 956 957/******************************************************************************* 958** 959** Function GKI_exception 960** 961** Description This function throws an exception. 962** This is normally only called for a nonrecoverable error. 963** 964** Parameters: code - (input) The code for the error 965** msg - (input) The message that has to be logged 966** 967** Returns void 968** 969*******************************************************************************/ 970 971void GKI_exception (UINT16 code, char *msg) 972{ 973 UINT8 task_id; 974 int i = 0; 975 976 GKI_TRACE_ERROR_0( "GKI_exception(): Task State Table"); 977 978 for(task_id = 0; task_id < GKI_MAX_TASKS; task_id++) 979 { 980 GKI_TRACE_ERROR_3( "TASK ID [%d] task name [%s] state [%d]", 981 task_id, 982 gki_cb.com.OSTName[task_id], 983 gki_cb.com.OSRdyTbl[task_id]); 984 } 985 986 GKI_TRACE_ERROR_2("GKI_exception %d %s", code, msg); 987 GKI_TRACE_ERROR_0( "********************************************************************"); 988 GKI_TRACE_ERROR_2( "* GKI_exception(): %d %s", code, msg); 989 GKI_TRACE_ERROR_0( "********************************************************************"); 990 991#if (GKI_DEBUG == TRUE) 992 GKI_disable(); 993 994 if (gki_cb.com.ExceptionCnt < GKI_MAX_EXCEPTION) 995 { 996 EXCEPTION_T *pExp; 997 998 pExp = &gki_cb.com.Exception[gki_cb.com.ExceptionCnt++]; 999 pExp->type = code; 1000 pExp->taskid = GKI_get_taskid(); 1001 strncpy((char *)pExp->msg, msg, GKI_MAX_EXCEPTION_MSGLEN - 1); 1002 } 1003 1004 GKI_enable(); 1005#endif 1006 1007 GKI_TRACE_ERROR_2("GKI_exception %d %s done", code, msg); 1008 1009 1010 return; 1011} 1012 1013 1014/******************************************************************************* 1015** 1016** Function GKI_get_time_stamp 1017** 1018** Description This function formats the time into a user area 1019** 1020** Parameters: tbuf - (output) the address to the memory containing the 1021** formatted time 1022** 1023** Returns the address of the user area containing the formatted time 1024** The format of the time is ???? 1025** 1026** NOTE This function is only called by OBEX. 1027** 1028*******************************************************************************/ 1029INT8 *GKI_get_time_stamp (INT8 *tbuf) 1030{ 1031 UINT32 ms_time; 1032 UINT32 s_time; 1033 UINT32 m_time; 1034 UINT32 h_time; 1035 INT8 *p_out = tbuf; 1036 1037 gki_cb.com.OSTicks = times(0); 1038 ms_time = GKI_TICKS_TO_MS(gki_cb.com.OSTicks); 1039 s_time = ms_time/100; /* 100 Ticks per second */ 1040 m_time = s_time/60; 1041 h_time = m_time/60; 1042 1043 ms_time -= s_time*100; 1044 s_time -= m_time*60; 1045 m_time -= h_time*60; 1046 1047 *p_out++ = (INT8)((h_time / 10) + '0'); 1048 *p_out++ = (INT8)((h_time % 10) + '0'); 1049 *p_out++ = ':'; 1050 *p_out++ = (INT8)((m_time / 10) + '0'); 1051 *p_out++ = (INT8)((m_time % 10) + '0'); 1052 *p_out++ = ':'; 1053 *p_out++ = (INT8)((s_time / 10) + '0'); 1054 *p_out++ = (INT8)((s_time % 10) + '0'); 1055 *p_out++ = ':'; 1056 *p_out++ = (INT8)((ms_time / 10) + '0'); 1057 *p_out++ = (INT8)((ms_time % 10) + '0'); 1058 *p_out++ = ':'; 1059 *p_out = 0; 1060 1061 return (tbuf); 1062} 1063 1064 1065/******************************************************************************* 1066** 1067** Function GKI_register_mempool 1068** 1069** Description This function registers a specific memory pool. 1070** 1071** Parameters: p_mem - (input) pointer to the memory pool 1072** 1073** Returns void 1074** 1075** NOTE This function is NOT called by the Widcomm stack and 1076** profiles. If your OS has different memory pools, you 1077** can tell GKI the pool to use by calling this function. 1078** 1079*******************************************************************************/ 1080void GKI_register_mempool (void *p_mem) 1081{ 1082 gki_cb.com.p_user_mempool = p_mem; 1083 1084 return; 1085} 1086 1087/******************************************************************************* 1088** 1089** Function GKI_os_malloc 1090** 1091** Description This function allocates memory 1092** 1093** Parameters: size - (input) The size of the memory that has to be 1094** allocated 1095** 1096** Returns the address of the memory allocated, or NULL if failed 1097** 1098** NOTE This function is called by the Widcomm stack when 1099** dynamic memory allocation is used. (see dyn_mem.h) 1100** 1101*******************************************************************************/ 1102void *GKI_os_malloc (UINT32 size) 1103{ 1104 return (malloc(size)); 1105} 1106 1107/******************************************************************************* 1108** 1109** Function GKI_os_free 1110** 1111** Description This function frees memory 1112** 1113** Parameters: size - (input) The address of the memory that has to be 1114** freed 1115** 1116** Returns void 1117** 1118** NOTE This function is NOT called by the Widcomm stack and 1119** profiles. It is only called from within GKI if dynamic 1120** 1121*******************************************************************************/ 1122void GKI_os_free (void *p_mem) 1123{ 1124 if(p_mem != NULL) 1125 free(p_mem); 1126 return; 1127} 1128 1129 1130/******************************************************************************* 1131** 1132** Function GKI_suspend_task() 1133** 1134** Description This function suspends the task specified in the argument. 1135** 1136** Parameters: task_id - (input) the id of the task that has to suspended 1137** 1138** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 1139** 1140** NOTE This function is NOT called by the Widcomm stack and 1141** profiles. If you want to implement task suspension capability, 1142** put specific code here. 1143** 1144*******************************************************************************/ 1145UINT8 GKI_suspend_task (UINT8 task_id) 1146{ 1147 GKI_TRACE_1("GKI_suspend_task %d - NOT implemented", task_id); 1148 1149 1150 GKI_TRACE_1("GKI_suspend_task %d done", task_id); 1151 1152 return (GKI_SUCCESS); 1153} 1154 1155 1156/******************************************************************************* 1157** 1158** Function GKI_resume_task() 1159** 1160** Description This function resumes the task specified in the argument. 1161** 1162** Parameters: task_id - (input) the id of the task that has to resumed 1163** 1164** Returns GKI_SUCCESS if all OK 1165** 1166** NOTE This function is NOT called by the Widcomm stack and 1167** profiles. If you want to implement task suspension capability, 1168** put specific code here. 1169** 1170*******************************************************************************/ 1171UINT8 GKI_resume_task (UINT8 task_id) 1172{ 1173 GKI_TRACE_1("GKI_resume_task %d - NOT implemented", task_id); 1174 1175 1176 GKI_TRACE_1("GKI_resume_task %d done", task_id); 1177 1178 return (GKI_SUCCESS); 1179} 1180 1181 1182/******************************************************************************* 1183** 1184** Function GKI_exit_task 1185** 1186** Description This function is called to stop a GKI task. 1187** 1188** Parameters: task_id - (input) the id of the task that has to be stopped 1189** 1190** Returns void 1191** 1192** NOTE This function is NOT called by the Widcomm stack and 1193** profiles. If you want to use it in your own implementation, 1194** put specific code here to kill a task. 1195** 1196*******************************************************************************/ 1197void GKI_exit_task (UINT8 task_id) 1198{ 1199 GKI_disable(); 1200 gki_cb.com.OSRdyTbl[task_id] = TASK_DEAD; 1201 1202 /* Destroy mutex and condition variable objects */ 1203 pthread_mutex_destroy(&gki_cb.os.thread_evt_mutex[task_id]); 1204 pthread_cond_destroy (&gki_cb.os.thread_evt_cond[task_id]); 1205 pthread_mutex_destroy(&gki_cb.os.thread_timeout_mutex[task_id]); 1206 pthread_cond_destroy (&gki_cb.os.thread_timeout_cond[task_id]); 1207 1208 GKI_enable(); 1209 1210 //GKI_send_event(task_id, EVENT_MASK(GKI_SHUTDOWN_EVT)); 1211 1212 GKI_TRACE_1("GKI_exit_task %d done", task_id); 1213 return; 1214} 1215 1216 1217/******************************************************************************* 1218** 1219** Function GKI_sched_lock 1220** 1221** Description This function is called by tasks to disable scheduler 1222** task context switching. 1223** 1224** Returns void 1225** 1226** NOTE This function is NOT called by the Widcomm stack and 1227** profiles. If you want to use it in your own implementation, 1228** put code here to tell the OS to disable context switching. 1229** 1230*******************************************************************************/ 1231void GKI_sched_lock(void) 1232{ 1233 GKI_TRACE_0("GKI_sched_lock"); 1234 GKI_disable (); 1235 return; 1236} 1237 1238 1239/******************************************************************************* 1240** 1241** Function GKI_sched_unlock 1242** 1243** Description This function is called by tasks to enable scheduler switching. 1244** 1245** Returns void 1246** 1247** NOTE This function is NOT called by the Widcomm stack and 1248** profiles. If you want to use it in your own implementation, 1249** put code here to tell the OS to re-enable context switching. 1250** 1251*******************************************************************************/ 1252void GKI_sched_unlock(void) 1253{ 1254 GKI_TRACE_0("GKI_sched_unlock"); 1255 GKI_enable (); 1256} 1257 1258/******************************************************************************* 1259** 1260** Function GKI_shiftdown 1261** 1262** Description shift memory down (to make space to insert a record) 1263** 1264*******************************************************************************/ 1265void GKI_shiftdown (UINT8 *p_mem, UINT32 len, UINT32 shift_amount) 1266{ 1267 register UINT8 *ps = p_mem + len - 1; 1268 register UINT8 *pd = ps + shift_amount; 1269 register UINT32 xx; 1270 1271 for (xx = 0; xx < len; xx++) 1272 *pd-- = *ps--; 1273} 1274 1275/******************************************************************************* 1276** 1277** Function GKI_shiftup 1278** 1279** Description shift memory up (to delete a record) 1280** 1281*******************************************************************************/ 1282void GKI_shiftup (UINT8 *p_dest, UINT8 *p_src, UINT32 len) 1283{ 1284 register UINT8 *ps = p_src; 1285 register UINT8 *pd = p_dest; 1286 register UINT32 xx; 1287 1288 for (xx = 0; xx < len; xx++) 1289 *pd++ = *ps++; 1290} 1291 1292 1293