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      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 typedef struct
     57 {
     58     pthread_mutex_t     GKI_mutex;
     59     pthread_t           thread_id[GKI_MAX_TASKS];
     60     pthread_mutex_t     thread_evt_mutex[GKI_MAX_TASKS];
     61     pthread_cond_t      thread_evt_cond[GKI_MAX_TASKS];
     62     pthread_mutex_t     thread_timeout_mutex[GKI_MAX_TASKS];
     63     pthread_cond_t      thread_timeout_cond[GKI_MAX_TASKS];
     64 #if (GKI_DEBUG == TRUE)
     65     pthread_mutex_t     GKI_trace_mutex;
     66 #endif
     67 } tGKI_OS;
     68 
     69 extern void gki_system_tick_start_stop_cback(BOOLEAN start);
     70 
     71 /* Contains common control block as well as OS specific variables */
     72 typedef struct
     73 {
     74     tGKI_OS     os;
     75     tGKI_COM_CB com;
     76 } tGKI_CB;
     77 
     78 
     79 #ifdef __cplusplus
     80 extern "C" {
     81 #endif
     82 
     83 #if GKI_DYNAMIC_MEMORY == FALSE
     84 GKI_API extern tGKI_CB  gki_cb;
     85 #else
     86 GKI_API extern tGKI_CB *gki_cb_ptr;
     87 #define gki_cb (*gki_cb_ptr)
     88 #endif
     89 
     90 #ifdef __cplusplus
     91 }
     92 #endif
     93 
     94 #endif
     95