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 #ifndef GKI_INT_H 19 #define GKI_INT_H 20 21 #include "gki_common.h" 22 #include <pthread.h> 23 #include <sys/prctl.h> 24 25 /********************************************************************** 26 ** OS specific definitions 27 */ 28 /* The base priority used for pthread based GKI task. below value is to keep it retro compatible. 29 * It is recommended to use (GKI_MAX_TASKS+3), this will assign real time priorities GKI_MAX_TASKS- 30 * task_id -2 to the thread */ 31 #ifndef GKI_LINUX_BASE_PRIORITY 32 #define GKI_LINUX_BASE_PRIORITY 30 33 #endif 34 35 /* The base policy used for pthread based GKI task. the sched defines are defined here to avoid undefined values due 36 * to missing header file, see pthread functions! Overall it is recommend however to use SCHED_NOMRAL */ 37 #define GKI_SCHED_NORMAL 0 38 #define GKI_SCHED_FIFO 1 39 #define GKI_SCHED_RR 2 40 #ifndef GKI_LINUX_BASE_POLICY 41 #define GKI_LINUX_BASE_POLICY GKI_SCHED_NORMAL 42 #endif 43 44 /* GKI timer bases should use GKI_SCHED_FIFO to ensure the least jitter possible */ 45 #ifndef GKI_LINUX_TIMER_POLICY 46 #define GKI_LINUX_TIMER_POLICY GKI_SCHED_FIFO 47 #endif 48 49 /* the GKI_timer_update() thread should have the highest real time priority to ensue correct 50 * timer expiry. 51 */ 52 #ifndef GKI_LINUX_TIMER_TICK_PRIORITY 53 #define GKI_LINUX_TIMER_TICK_PRIORITY GKI_LINUX_BASE_PRIORITY+2 54 #endif 55 56 /* the AV timer should preferably run above the gki timer tick to ensure precise AV timing 57 * If you observe AV jitter under have load you may increase this one */ 58 #ifndef GKI_LINUX_AV_TIMER_PRIORITY 59 #define GKI_LINUX_AV_TIMER_PRIORITY GKI_LINUX_BASE_PRIORITY+3 60 #endif 61 62 /* defines by how much the nice value of the PROCESS should be changed. Values allowed: 63 * -19 to +19. a negative value give higher priority to btld compared to the default nice value 64 * of 20. in case of SCHED_NORMAL, a level of -5 should give a good btld/bt performance. 65 * In case of real time scheduling, leave default value. 66 */ 67 #ifndef GKI_LINUX_DEFAULT_NICE_INC 68 #define GKI_LINUX_DEFAULT_NICE_INC -7 69 #endif 70 71 typedef struct 72 { 73 pthread_mutex_t GKI_mutex; 74 pthread_t thread_id[GKI_MAX_TASKS]; 75 pthread_mutex_t thread_evt_mutex[GKI_MAX_TASKS]; 76 pthread_cond_t thread_evt_cond[GKI_MAX_TASKS]; 77 pthread_mutex_t thread_timeout_mutex[GKI_MAX_TASKS]; 78 pthread_cond_t thread_timeout_cond[GKI_MAX_TASKS]; 79 int no_timer_suspend; /* 1: no suspend, 0 stop calling GKI_timer_update() */ 80 pthread_mutex_t gki_timer_mutex; 81 pthread_cond_t gki_timer_cond; 82 #if (GKI_DEBUG == TRUE) 83 pthread_mutex_t GKI_trace_mutex; 84 #endif 85 } tGKI_OS; 86 87 /* condition to exit or continue GKI_run() timer loop */ 88 #define GKI_TIMER_TICK_RUN_COND 1 89 #define GKI_TIMER_TICK_STOP_COND 0 90 91 extern void gki_system_tick_start_stop_cback(BOOLEAN start); 92 93 /* Contains common control block as well as OS specific variables */ 94 typedef struct 95 { 96 tGKI_OS os; 97 tGKI_COM_CB com; 98 } tGKI_CB; 99 100 101 #ifdef __cplusplus 102 extern "C" { 103 #endif 104 105 #if GKI_DYNAMIC_MEMORY == FALSE 106 GKI_API extern tGKI_CB gki_cb; 107 #else 108 GKI_API extern tGKI_CB *gki_cb_ptr; 109 #define gki_cb (*gki_cb_ptr) 110 #endif 111 112 #ifdef __cplusplus 113 } 114 #endif 115 116 #endif 117 118