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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2009-2012 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 
     19 #ifndef BTIF_COMMON_H
     20 #define BTIF_COMMON_H
     21 
     22 #include "data_types.h"
     23 #include "bt_types.h"
     24 #include "bta_api.h"
     25 
     26 #ifndef LOG_TAG
     27 #error "LOG_TAG not defined, please add in .c file prior to including bt_common.h"
     28 #endif
     29 
     30 #include <utils/Log.h>
     31 
     32 /*******************************************************************************
     33 **  Constants & Macros
     34 ********************************************************************************/
     35 
     36 #define ASSERTC(cond, msg, val) if (!(cond)) { ALOGE( \
     37     "### ASSERT : %s line %d %s (%d) ###", __FILE__, __LINE__, msg, val);}
     38 
     39 /* Calculate start of event enumeration; id is top 8 bits of event */
     40 #define BTIF_SIG_START(id)       ((id) << 8)
     41 
     42 /* For upstream the MSB bit is always SET */
     43 #define BTIF_SIG_CB_BIT   (0x8000)
     44 #define BTIF_SIG_CB_START(id)    (((id) << 8) | BTIF_SIG_CB_BIT)
     45 
     46 /* BTIF sub-systems */
     47 #define BTIF_CORE           0
     48 #define BTIF_DM             1
     49 #define BTIF_HFP            2
     50 #define BTIF_AV             3
     51 #define BTIF_PAN            4
     52 
     53 extern bt_callbacks_t *bt_hal_cbacks;
     54 
     55 #define HAL_CBACK(P_CB, P_CBACK, ...)\
     56     if (P_CB && P_CB->P_CBACK) {            \
     57         ALOGD("HAL %s->%s", #P_CB, #P_CBACK); \
     58         P_CB->P_CBACK(__VA_ARGS__);         \
     59     }                                       \
     60     else {                                  \
     61         ASSERTC(0, "Callback is NULL", 0);  \
     62     }
     63 
     64 /**
     65  * BTIF events for requests that require context switch to btif task
     66  * on downstreams path
     67  */
     68 enum
     69 {
     70     BTIF_CORE_API_START = BTIF_SIG_START(BTIF_CORE),
     71     BTIF_CORE_STORAGE_NO_ACTION,
     72     BTIF_CORE_STORAGE_ADAPTER_WRITE,
     73     BTIF_CORE_STORAGE_ADAPTER_READ,
     74     BTIF_CORE_STORAGE_ADAPTER_READ_ALL,
     75     BTIF_CORE_STORAGE_REMOTE_WRITE,
     76     BTIF_CORE_STORAGE_REMOTE_READ,
     77     BTIF_CORE_STORAGE_REMOTE_READ_ALL,
     78     BTIF_CORE_STORAGE_READ_ALL,
     79     BTIF_CORE_STORAGE_NOTIFY_STATUS,
     80     /* add here */
     81 
     82     BTIF_DM_API_START = BTIF_SIG_START(BTIF_DM),
     83     BTIF_DM_ENABLE_SERVICE,
     84     BTIF_DM_DISABLE_SERVICE,
     85     /* add here */
     86 
     87     BTIF_HFP_API_START = BTIF_SIG_START(BTIF_HFP),
     88     /* add here */
     89 
     90     BTIF_AV_API_START = BTIF_SIG_START(BTIF_AV),
     91     /* add here */
     92 };
     93 
     94 /**
     95  * BTIF events for callbacks that require context switch to btif task
     96  * on upstream path - Typically these would be non-BTA events
     97  * that are generated by the BTIF layer.
     98  */
     99 enum
    100 {
    101     BTIF_CORE_CB_START = BTIF_SIG_CB_START(BTIF_CORE),
    102     /* add here */
    103 
    104     BTIF_DM_CB_START = BTIF_SIG_CB_START(BTIF_DM),
    105     BTIF_DM_CB_DISCOVERY_STARTED, /* Discovery has started */
    106     BTIF_DM_CB_CREATE_BOND,   /* Create bond */
    107     BTIF_DM_CB_REMOVE_BOND,   /*Remove bond */
    108     BTIF_DM_CB_HID_REMOTE_NAME,   /* Remote name callback for HID device */
    109     BTIF_DM_CB_BOND_STATE_BONDING,
    110 
    111     BTIF_HFP_CB_START  = BTIF_SIG_CB_START(BTIF_HFP),
    112     BTIF_HFP_CB_AUDIO_CONNECTING, /* HF AUDIO connect has been sent to BTA successfully */
    113 
    114     BTIF_PAN_CB_START = BTIF_SIG_CB_START(BTIF_PAN),
    115     BTIF_PAN_CB_DISCONNECTING, /* PAN Disconnect has been sent to BTA successfully */
    116 };
    117 
    118 /* Macro definitions for BD ADDR persistence */
    119 
    120 /**
    121  * PROPERTY_BT_BDADDR_PATH
    122  * The property key stores the storage location of Bluetooth Device Address
    123  */
    124 #ifndef PROPERTY_BT_BDADDR_PATH
    125 #define PROPERTY_BT_BDADDR_PATH         "ro.bt.bdaddr_path"
    126 #endif
    127 
    128 /**
    129  * PERSIST_BDADDR_PROPERTY
    130  * If there is no valid bdaddr available from PROPERTY_BT_BDADDR_PATH,
    131  * generating a random BDADDR and keeping it in the PERSIST_BDADDR_DROP.
    132  */
    133 #ifndef PERSIST_BDADDR_PROPERTY
    134 #define PERSIST_BDADDR_PROPERTY         "persist.service.bdroid.bdaddr"
    135 #endif
    136 
    137 #define FACTORY_BT_BDADDR_STORAGE_LEN   17
    138 
    139 
    140 /*******************************************************************************
    141 **  Type definitions for callback functions
    142 ********************************************************************************/
    143 
    144 typedef void (tBTIF_CBACK) (UINT16 event, char *p_param);
    145 typedef void (tBTIF_COPY_CBACK) (UINT16 event, char *p_dest, char *p_src);
    146 
    147 
    148 /*******************************************************************************
    149 **  Type definitions and return values
    150 ********************************************************************************/
    151 
    152 /* this type handles all btif context switches between BTU and HAL */
    153 typedef struct
    154 {
    155     BT_HDR               hdr;
    156     tBTIF_CBACK*         p_cb;    /* context switch callback */
    157 
    158     /* parameters passed to callback */
    159     UINT16               event;   /* message event id */
    160     char                 p_param[0]; /* parameter area needs to be last */
    161 } tBTIF_CONTEXT_SWITCH_CBACK;
    162 
    163 
    164 /*******************************************************************************
    165 **  Functions
    166 ********************************************************************************/
    167 
    168 bt_status_t btif_transfer_context (tBTIF_CBACK *p_cback, UINT16 event, char* p_params,
    169                                     int param_len, tBTIF_COPY_CBACK *p_copy_cback);
    170 tBTA_SERVICE_MASK btif_get_enabled_services_mask(void);
    171 bt_status_t btif_enable_service(tBTA_SERVICE_ID service_id);
    172 bt_status_t btif_disable_service(tBTA_SERVICE_ID service_id);
    173 int btif_is_enabled(void);
    174 
    175 /**
    176  * BTIF_Events
    177  */
    178 void btif_enable_bluetooth_evt(tBTA_STATUS status, BD_ADDR local_bd);
    179 void btif_disable_bluetooth_evt(void);
    180 void btif_adapter_properties_evt(bt_status_t status, uint32_t num_props, bt_property_t *p_props);
    181 void btif_remote_properties_evt(bt_status_t status, bt_bdaddr_t *remote_addr,
    182                                    uint32_t num_props, bt_property_t *p_props);
    183 #endif /* BTIF_COMMON_H */
    184