gki_ulinux.c revision e9df6ba5a8fcccf306a80b1670b423be8fe7746a
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 /* the unit should be alsways 1 (1 tick). only if you vary for some reason heart beat tick 536 * e.g. power saving you may want to provide more ticks 537 */ 538 GKI_timer_update( 1 ); 539 /* BT_TRACE_2( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, "update: tv_sec: %d, tv_nsec: %d", delay.tv_sec, delay.tv_nsec ); */ 540 } while ( GKI_TIMER_TICK_RUN_COND == *p_run_cond); 541 542 /* currently on reason to exit above loop is no_timer_suspend == GKI_TIMER_TICK_STOP_COND 543 * block timer main thread till re-armed by */ 544#ifdef GKI_TICK_TIMER_DEBUG 545 BT_TRACE_0( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> SUSPENDED GKI_timer_update()" ); 546#endif 547 if (GKI_TIMER_TICK_EXIT_COND != *p_run_cond) { 548 GKI_TRACE_1("%s waiting timer mutex", __func__); 549 pthread_mutex_lock( &gki_cb.os.gki_timer_mutex ); 550 pthread_cond_wait( &gki_cb.os.gki_timer_cond, &gki_cb.os.gki_timer_mutex ); 551 pthread_mutex_unlock( &gki_cb.os.gki_timer_mutex ); 552 GKI_TRACE_1("%s exited timer mutex", __func__); 553 } 554 /* potentially we need to adjust os gki_cb.com.OSTicks */ 555 556#ifdef GKI_TICK_TIMER_DEBUG 557 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, ">>> RESTARTED GKI_timer_update(): run_cond: %d", 558 *p_run_cond ); 559#endif 560 } /* for */ 561#endif 562 GKI_TRACE_1("%s exit", __func__); 563 return(0); 564} 565 566 567/******************************************************************************* 568** 569** Function GKI_stop 570** 571** Description This function is called to stop 572** the tasks and timers when the system is being stopped 573** 574** Returns void 575** 576** NOTE This function is NOT called by the Widcomm stack and 577** profiles. If you want to use it in your own implementation, 578** put specific code here. 579** 580*******************************************************************************/ 581void GKI_stop (void) 582{ 583 UINT8 task_id; 584 585 /* gki_queue_timer_cback(FALSE); */ 586 /* TODO - add code here if needed*/ 587 588 for(task_id = 0; task_id<GKI_MAX_TASKS; task_id++) 589 { 590 if(gki_cb.com.OSRdyTbl[task_id] != TASK_DEAD) 591 { 592 GKI_exit_task(task_id); 593 } 594 } 595} 596 597 598/******************************************************************************* 599** 600** Function GKI_wait 601** 602** Description This function is called by tasks to wait for a specific 603** event or set of events. The task may specify the duration 604** that it wants to wait for, or 0 if infinite. 605** 606** Parameters: flag - (input) the event or set of events to wait for 607** timeout - (input) the duration that the task wants to wait 608** for the specific events (in system ticks) 609** 610** 611** Returns the event mask of received events or zero if timeout 612** 613*******************************************************************************/ 614UINT16 GKI_wait (UINT16 flag, UINT32 timeout) 615{ 616 UINT16 evt; 617 UINT8 rtask; 618 struct timespec abstime = { 0, 0 }; 619 int sec; 620 int nano_sec; 621 622 rtask = GKI_get_taskid(); 623 GKI_TRACE_3("GKI_wait %d %x %d", rtask, flag, timeout); 624 if (rtask >= GKI_MAX_TASKS) { 625 pthread_exit(NULL); 626 return 0; 627 } 628 629 gki_pthread_info_t* p_pthread_info = &gki_pthread_info[rtask]; 630 if (p_pthread_info->pCond != NULL && p_pthread_info->pMutex != NULL) { 631 int ret; 632 GKI_TRACE_3("GKI_wait task=%i, pCond/pMutex = %x/%x", rtask, p_pthread_info->pCond, p_pthread_info->pMutex); 633 ret = pthread_mutex_lock(p_pthread_info->pMutex); 634 ret = pthread_cond_signal(p_pthread_info->pCond); 635 ret = pthread_mutex_unlock(p_pthread_info->pMutex); 636 p_pthread_info->pMutex = NULL; 637 p_pthread_info->pCond = NULL; 638 } 639 gki_cb.com.OSWaitForEvt[rtask] = flag; 640 641 /* protect OSWaitEvt[rtask] from modification from an other thread */ 642 pthread_mutex_lock(&gki_cb.os.thread_evt_mutex[rtask]); 643 644#if 0 /* for clean scheduling we probably should always call pthread_cond_wait() */ 645 /* Check if anything in any of the mailboxes. There is a potential race condition where OSTaskQFirst[rtask] 646 has been modified. however this should only result in addtional call to pthread_cond_wait() but as 647 the cond is met, it will exit immediately (depending on schedulling) */ 648 if (gki_cb.com.OSTaskQFirst[rtask][0]) 649 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_0_EVT_MASK; 650 if (gki_cb.com.OSTaskQFirst[rtask][1]) 651 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_1_EVT_MASK; 652 if (gki_cb.com.OSTaskQFirst[rtask][2]) 653 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_2_EVT_MASK; 654 if (gki_cb.com.OSTaskQFirst[rtask][3]) 655 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_3_EVT_MASK; 656#endif 657 658 if (!(gki_cb.com.OSWaitEvt[rtask] & flag)) 659 { 660 if (timeout) 661 { 662 // timeout = GKI_MS_TO_TICKS(timeout); /* convert from milliseconds to ticks */ 663 664 /* get current system time */ 665 // clock_gettime(CLOCK_MONOTONIC, &currSysTime); 666 // abstime.tv_sec = currSysTime.time; 667 // abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm; 668 clock_gettime(CLOCK_MONOTONIC, &abstime); 669 670 /* add timeout */ 671 sec = timeout / 1000; 672 nano_sec = (timeout % 1000) * NANOSEC_PER_MILLISEC; 673 abstime.tv_nsec += nano_sec; 674 if (abstime.tv_nsec > NSEC_PER_SEC) 675 { 676 abstime.tv_sec += (abstime.tv_nsec / NSEC_PER_SEC); 677 abstime.tv_nsec = abstime.tv_nsec % NSEC_PER_SEC; 678 } 679 abstime.tv_sec += sec; 680 681 pthread_cond_timedwait_monotonic(&gki_cb.os.thread_evt_cond[rtask], 682 &gki_cb.os.thread_evt_mutex[rtask], &abstime); 683 684 } 685 else 686 { 687 pthread_cond_wait(&gki_cb.os.thread_evt_cond[rtask], &gki_cb.os.thread_evt_mutex[rtask]); 688 } 689 690 /* TODO: check, this is probably neither not needed depending on phtread_cond_wait() implmentation, 691 e.g. it looks like it is implemented as a counter in which case multiple cond_signal 692 should NOT be lost! */ 693 // we are waking up after waiting for some events, so refresh variables 694 // 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 695 if (gki_cb.com.OSTaskQFirst[rtask][0]) 696 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_0_EVT_MASK; 697 if (gki_cb.com.OSTaskQFirst[rtask][1]) 698 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_1_EVT_MASK; 699 if (gki_cb.com.OSTaskQFirst[rtask][2]) 700 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_2_EVT_MASK; 701 if (gki_cb.com.OSTaskQFirst[rtask][3]) 702 gki_cb.com.OSWaitEvt[rtask] |= TASK_MBOX_3_EVT_MASK; 703 704 if (gki_cb.com.OSRdyTbl[rtask] == TASK_DEAD) 705 { 706 gki_cb.com.OSWaitEvt[rtask] = 0; 707 /* unlock thread_evt_mutex as pthread_cond_wait() does auto lock when cond is met */ 708 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[rtask]); 709 BT_TRACE_1( TRACE_LAYER_HCI, TRACE_TYPE_DEBUG, "GKI TASK_DEAD received. exit thread %d...", rtask ); 710 711 gki_cb.os.thread_id[rtask] = 0; 712 pthread_exit(NULL); 713 return (EVENT_MASK(GKI_SHUTDOWN_EVT)); 714 } 715 } 716 717 /* Clear the wait for event mask */ 718 gki_cb.com.OSWaitForEvt[rtask] = 0; 719 720 /* Return only those bits which user wants... */ 721 evt = gki_cb.com.OSWaitEvt[rtask] & flag; 722 723 /* Clear only those bits which user wants... */ 724 gki_cb.com.OSWaitEvt[rtask] &= ~flag; 725 726 /* unlock thread_evt_mutex as pthread_cond_wait() does auto lock mutex when cond is met */ 727 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[rtask]); 728 GKI_TRACE_4("GKI_wait %d %x %d %x resumed", rtask, flag, timeout, evt); 729 730 return (evt); 731} 732 733 734/******************************************************************************* 735** 736** Function GKI_delay 737** 738** Description This function is called by tasks to sleep unconditionally 739** for a specified amount of time. The duration is in milliseconds 740** 741** Parameters: timeout - (input) the duration in milliseconds 742** 743** Returns void 744** 745*******************************************************************************/ 746 747void GKI_delay (UINT32 timeout) 748{ 749 UINT8 rtask = GKI_get_taskid(); 750 struct timespec delay; 751 int err; 752 753 GKI_TRACE_2("GKI_delay %d %d", rtask, timeout); 754 755 delay.tv_sec = timeout / 1000; 756 delay.tv_nsec = 1000 * 1000 * (timeout%1000); 757 758 /* [u]sleep can't be used because it uses SIGALRM */ 759 760 do { 761 err = nanosleep(&delay, &delay); 762 } while (err < 0 && errno ==EINTR); 763 764 /* Check if task was killed while sleeping */ 765 /* NOTE 766 ** if you do not implement task killing, you do not 767 ** need this check. 768 */ 769 if (rtask && gki_cb.com.OSRdyTbl[rtask] == TASK_DEAD) 770 { 771 } 772 773 GKI_TRACE_2("GKI_delay %d %d done", rtask, timeout); 774 return; 775} 776 777 778/******************************************************************************* 779** 780** Function GKI_send_event 781** 782** Description This function is called by tasks to send events to other 783** tasks. Tasks can also send events to themselves. 784** 785** Parameters: task_id - (input) The id of the task to which the event has to 786** be sent 787** event - (input) The event that has to be sent 788** 789** 790** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 791** 792*******************************************************************************/ 793UINT8 GKI_send_event (UINT8 task_id, UINT16 event) 794{ 795 GKI_TRACE_2("GKI_send_event %d %x", task_id, event); 796 797 /* use efficient coding to avoid pipeline stalls */ 798 if (task_id < GKI_MAX_TASKS) 799 { 800 /* protect OSWaitEvt[task_id] from manipulation in GKI_wait() */ 801 pthread_mutex_lock(&gki_cb.os.thread_evt_mutex[task_id]); 802 803 /* Set the event bit */ 804 gki_cb.com.OSWaitEvt[task_id] |= event; 805 806 pthread_cond_signal(&gki_cb.os.thread_evt_cond[task_id]); 807 808 pthread_mutex_unlock(&gki_cb.os.thread_evt_mutex[task_id]); 809 810 GKI_TRACE_2("GKI_send_event %d %x done", task_id, event); 811 return ( GKI_SUCCESS ); 812 } 813 return (GKI_FAILURE); 814} 815 816 817/******************************************************************************* 818** 819** Function GKI_isend_event 820** 821** Description This function is called from ISRs to send events to other 822** tasks. The only difference between this function and GKI_send_event 823** is that this function assumes interrupts are already disabled. 824** 825** Parameters: task_id - (input) The destination task Id for the event. 826** event - (input) The event flag 827** 828** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 829** 830** NOTE This function is NOT called by the Widcomm stack and 831** profiles. If you want to use it in your own implementation, 832** put your code here, otherwise you can delete the entire 833** body of the function. 834** 835*******************************************************************************/ 836UINT8 GKI_isend_event (UINT8 task_id, UINT16 event) 837{ 838 839 GKI_TRACE_2("GKI_isend_event %d %x", task_id, event); 840 GKI_TRACE_2("GKI_isend_event %d %x done", task_id, event); 841 return GKI_send_event(task_id, event); 842} 843 844 845/******************************************************************************* 846** 847** Function GKI_get_taskid 848** 849** Description This function gets the currently running task ID. 850** 851** Returns task ID 852** 853** NOTE The Widcomm upper stack and profiles may run as a single task. 854** If you only have one GKI task, then you can hard-code this 855** function to return a '1'. Otherwise, you should have some 856** OS-specific method to determine the current task. 857** 858*******************************************************************************/ 859UINT8 GKI_get_taskid (void) 860{ 861 int i; 862 863 pthread_t thread_id = pthread_self( ); 864 for (i = 0; i < GKI_MAX_TASKS; i++) { 865 if (gki_cb.os.thread_id[i] == thread_id) { 866 GKI_TRACE_2("GKI_get_taskid %x %d done", thread_id, i); 867 return(i); 868 } 869 } 870 871 GKI_TRACE_1("GKI_get_taskid: thread id = %x, task id = -1", thread_id); 872 873 return(-1); 874} 875 876/******************************************************************************* 877** 878** Function GKI_map_taskname 879** 880** Description This function gets the task name of the taskid passed as arg. 881** If GKI_MAX_TASKS is passed as arg the currently running task 882** name is returned 883** 884** Parameters: task_id - (input) The id of the task whose name is being 885** sought. GKI_MAX_TASKS is passed to get the name of the 886** currently running task. 887** 888** Returns pointer to task name 889** 890** NOTE this function needs no customization 891** 892*******************************************************************************/ 893INT8 *GKI_map_taskname (UINT8 task_id) 894{ 895 GKI_TRACE_1("GKI_map_taskname %d", task_id); 896 897 if (task_id < GKI_MAX_TASKS) 898 { 899 GKI_TRACE_2("GKI_map_taskname %d %s done", task_id, gki_cb.com.OSTName[task_id]); 900 return (gki_cb.com.OSTName[task_id]); 901 } 902 else if (task_id == GKI_MAX_TASKS ) 903 { 904 return (gki_cb.com.OSTName[GKI_get_taskid()]); 905 } 906 else 907 { 908 return "BAD"; 909 } 910} 911 912 913/******************************************************************************* 914** 915** Function GKI_enable 916** 917** Description This function enables interrupts. 918** 919** Returns void 920** 921*******************************************************************************/ 922void GKI_enable (void) 923{ 924 GKI_TRACE_0("GKI_enable"); 925 pthread_mutex_unlock(&gki_cb.os.GKI_mutex); 926/* pthread_mutex_xx is nesting save, no need for this: already_disabled = 0; */ 927 GKI_TRACE_0("Leaving GKI_enable"); 928 return; 929} 930 931 932/******************************************************************************* 933** 934** Function GKI_disable 935** 936** Description This function disables interrupts. 937** 938** Returns void 939** 940*******************************************************************************/ 941 942void GKI_disable (void) 943{ 944 //GKI_TRACE_0("GKI_disable"); 945 946/* pthread_mutex_xx is nesting save, no need for this: if (!already_disabled) { 947 already_disabled = 1; */ 948 pthread_mutex_lock(&gki_cb.os.GKI_mutex); 949/* } */ 950 //GKI_TRACE_0("Leaving GKI_disable"); 951 return; 952} 953 954 955/******************************************************************************* 956** 957** Function GKI_exception 958** 959** Description This function throws an exception. 960** This is normally only called for a nonrecoverable error. 961** 962** Parameters: code - (input) The code for the error 963** msg - (input) The message that has to be logged 964** 965** Returns void 966** 967*******************************************************************************/ 968 969void GKI_exception (UINT16 code, char *msg) 970{ 971 UINT8 task_id; 972 int i = 0; 973 974 GKI_TRACE_ERROR_0( "GKI_exception(): Task State Table"); 975 976 for(task_id = 0; task_id < GKI_MAX_TASKS; task_id++) 977 { 978 GKI_TRACE_ERROR_3( "TASK ID [%d] task name [%s] state [%d]", 979 task_id, 980 gki_cb.com.OSTName[task_id], 981 gki_cb.com.OSRdyTbl[task_id]); 982 } 983 984 GKI_TRACE_ERROR_2("GKI_exception %d %s", code, msg); 985 GKI_TRACE_ERROR_0( "********************************************************************"); 986 GKI_TRACE_ERROR_2( "* GKI_exception(): %d %s", code, msg); 987 GKI_TRACE_ERROR_0( "********************************************************************"); 988 989#if (GKI_DEBUG == TRUE) 990 GKI_disable(); 991 992 if (gki_cb.com.ExceptionCnt < GKI_MAX_EXCEPTION) 993 { 994 EXCEPTION_T *pExp; 995 996 pExp = &gki_cb.com.Exception[gki_cb.com.ExceptionCnt++]; 997 pExp->type = code; 998 pExp->taskid = GKI_get_taskid(); 999 strncpy((char *)pExp->msg, msg, GKI_MAX_EXCEPTION_MSGLEN - 1); 1000 } 1001 1002 GKI_enable(); 1003#endif 1004 1005 GKI_TRACE_ERROR_2("GKI_exception %d %s done", code, msg); 1006 1007 1008 return; 1009} 1010 1011 1012/******************************************************************************* 1013** 1014** Function GKI_get_time_stamp 1015** 1016** Description This function formats the time into a user area 1017** 1018** Parameters: tbuf - (output) the address to the memory containing the 1019** formatted time 1020** 1021** Returns the address of the user area containing the formatted time 1022** The format of the time is ???? 1023** 1024** NOTE This function is only called by OBEX. 1025** 1026*******************************************************************************/ 1027INT8 *GKI_get_time_stamp (INT8 *tbuf) 1028{ 1029 UINT32 ms_time; 1030 UINT32 s_time; 1031 UINT32 m_time; 1032 UINT32 h_time; 1033 INT8 *p_out = tbuf; 1034 1035 gki_cb.com.OSTicks = times(0); 1036 ms_time = GKI_TICKS_TO_MS(gki_cb.com.OSTicks); 1037 s_time = ms_time/100; /* 100 Ticks per second */ 1038 m_time = s_time/60; 1039 h_time = m_time/60; 1040 1041 ms_time -= s_time*100; 1042 s_time -= m_time*60; 1043 m_time -= h_time*60; 1044 1045 *p_out++ = (INT8)((h_time / 10) + '0'); 1046 *p_out++ = (INT8)((h_time % 10) + '0'); 1047 *p_out++ = ':'; 1048 *p_out++ = (INT8)((m_time / 10) + '0'); 1049 *p_out++ = (INT8)((m_time % 10) + '0'); 1050 *p_out++ = ':'; 1051 *p_out++ = (INT8)((s_time / 10) + '0'); 1052 *p_out++ = (INT8)((s_time % 10) + '0'); 1053 *p_out++ = ':'; 1054 *p_out++ = (INT8)((ms_time / 10) + '0'); 1055 *p_out++ = (INT8)((ms_time % 10) + '0'); 1056 *p_out++ = ':'; 1057 *p_out = 0; 1058 1059 return (tbuf); 1060} 1061 1062 1063/******************************************************************************* 1064** 1065** Function GKI_register_mempool 1066** 1067** Description This function registers a specific memory pool. 1068** 1069** Parameters: p_mem - (input) pointer to the memory pool 1070** 1071** Returns void 1072** 1073** NOTE This function is NOT called by the Widcomm stack and 1074** profiles. If your OS has different memory pools, you 1075** can tell GKI the pool to use by calling this function. 1076** 1077*******************************************************************************/ 1078void GKI_register_mempool (void *p_mem) 1079{ 1080 gki_cb.com.p_user_mempool = p_mem; 1081 1082 return; 1083} 1084 1085/******************************************************************************* 1086** 1087** Function GKI_os_malloc 1088** 1089** Description This function allocates memory 1090** 1091** Parameters: size - (input) The size of the memory that has to be 1092** allocated 1093** 1094** Returns the address of the memory allocated, or NULL if failed 1095** 1096** NOTE This function is called by the Widcomm stack when 1097** dynamic memory allocation is used. (see dyn_mem.h) 1098** 1099*******************************************************************************/ 1100void *GKI_os_malloc (UINT32 size) 1101{ 1102 return (malloc(size)); 1103} 1104 1105/******************************************************************************* 1106** 1107** Function GKI_os_free 1108** 1109** Description This function frees memory 1110** 1111** Parameters: size - (input) The address of the memory that has to be 1112** freed 1113** 1114** Returns void 1115** 1116** NOTE This function is NOT called by the Widcomm stack and 1117** profiles. It is only called from within GKI if dynamic 1118** 1119*******************************************************************************/ 1120void GKI_os_free (void *p_mem) 1121{ 1122 if(p_mem != NULL) 1123 free(p_mem); 1124 return; 1125} 1126 1127 1128/******************************************************************************* 1129** 1130** Function GKI_suspend_task() 1131** 1132** Description This function suspends the task specified in the argument. 1133** 1134** Parameters: task_id - (input) the id of the task that has to suspended 1135** 1136** Returns GKI_SUCCESS if all OK, else GKI_FAILURE 1137** 1138** NOTE This function is NOT called by the Widcomm stack and 1139** profiles. If you want to implement task suspension capability, 1140** put specific code here. 1141** 1142*******************************************************************************/ 1143UINT8 GKI_suspend_task (UINT8 task_id) 1144{ 1145 GKI_TRACE_1("GKI_suspend_task %d - NOT implemented", task_id); 1146 1147 1148 GKI_TRACE_1("GKI_suspend_task %d done", task_id); 1149 1150 return (GKI_SUCCESS); 1151} 1152 1153 1154/******************************************************************************* 1155** 1156** Function GKI_resume_task() 1157** 1158** Description This function resumes the task specified in the argument. 1159** 1160** Parameters: task_id - (input) the id of the task that has to resumed 1161** 1162** Returns GKI_SUCCESS if all OK 1163** 1164** NOTE This function is NOT called by the Widcomm stack and 1165** profiles. If you want to implement task suspension capability, 1166** put specific code here. 1167** 1168*******************************************************************************/ 1169UINT8 GKI_resume_task (UINT8 task_id) 1170{ 1171 GKI_TRACE_1("GKI_resume_task %d - NOT implemented", task_id); 1172 1173 1174 GKI_TRACE_1("GKI_resume_task %d done", task_id); 1175 1176 return (GKI_SUCCESS); 1177} 1178 1179 1180/******************************************************************************* 1181** 1182** Function GKI_exit_task 1183** 1184** Description This function is called to stop a GKI task. 1185** 1186** Parameters: task_id - (input) the id of the task that has to be stopped 1187** 1188** Returns void 1189** 1190** NOTE This function is NOT called by the Widcomm stack and 1191** profiles. If you want to use it in your own implementation, 1192** put specific code here to kill a task. 1193** 1194*******************************************************************************/ 1195void GKI_exit_task (UINT8 task_id) 1196{ 1197 GKI_disable(); 1198 gki_cb.com.OSRdyTbl[task_id] = TASK_DEAD; 1199 1200 /* Destroy mutex and condition variable objects */ 1201 pthread_mutex_destroy(&gki_cb.os.thread_evt_mutex[task_id]); 1202 pthread_cond_destroy (&gki_cb.os.thread_evt_cond[task_id]); 1203 pthread_mutex_destroy(&gki_cb.os.thread_timeout_mutex[task_id]); 1204 pthread_cond_destroy (&gki_cb.os.thread_timeout_cond[task_id]); 1205 1206 GKI_enable(); 1207 1208 //GKI_send_event(task_id, EVENT_MASK(GKI_SHUTDOWN_EVT)); 1209 1210 GKI_TRACE_1("GKI_exit_task %d done", task_id); 1211 return; 1212} 1213 1214 1215/******************************************************************************* 1216** 1217** Function GKI_sched_lock 1218** 1219** Description This function is called by tasks to disable scheduler 1220** task context switching. 1221** 1222** Returns void 1223** 1224** NOTE This function is NOT called by the Widcomm stack and 1225** profiles. If you want to use it in your own implementation, 1226** put code here to tell the OS to disable context switching. 1227** 1228*******************************************************************************/ 1229void GKI_sched_lock(void) 1230{ 1231 GKI_TRACE_0("GKI_sched_lock"); 1232 return; 1233} 1234 1235 1236/******************************************************************************* 1237** 1238** Function GKI_sched_unlock 1239** 1240** Description This function is called by tasks to enable scheduler switching. 1241** 1242** Returns void 1243** 1244** NOTE This function is NOT called by the Widcomm stack and 1245** profiles. If you want to use it in your own implementation, 1246** put code here to tell the OS to re-enable context switching. 1247** 1248*******************************************************************************/ 1249void GKI_sched_unlock(void) 1250{ 1251 GKI_TRACE_0("GKI_sched_unlock"); 1252} 1253 1254/******************************************************************************* 1255** 1256** Function GKI_shiftdown 1257** 1258** Description shift memory down (to make space to insert a record) 1259** 1260*******************************************************************************/ 1261void GKI_shiftdown (UINT8 *p_mem, UINT32 len, UINT32 shift_amount) 1262{ 1263 register UINT8 *ps = p_mem + len - 1; 1264 register UINT8 *pd = ps + shift_amount; 1265 register UINT32 xx; 1266 1267 for (xx = 0; xx < len; xx++) 1268 *pd-- = *ps--; 1269} 1270 1271/******************************************************************************* 1272** 1273** Function GKI_shiftup 1274** 1275** Description shift memory up (to delete a record) 1276** 1277*******************************************************************************/ 1278void GKI_shiftup (UINT8 *p_dest, UINT8 *p_src, UINT32 len) 1279{ 1280 register UINT8 *ps = p_src; 1281 register UINT8 *pd = p_dest; 1282 register UINT32 xx; 1283 1284 for (xx = 0; xx < len; xx++) 1285 *pd++ = *ps++; 1286} 1287 1288 1289