1 /****************************************************************************** 2 * 3 * Copyright (c) 2014 The Android Open Source Project 4 * Copyright 2009-2012 Broadcom Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at: 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************************/ 19 20 #ifndef BTIF_COMMON_H 21 #define BTIF_COMMON_H 22 23 #include <stdlib.h> 24 25 #include <base/bind.h> 26 #include <base/message_loop/message_loop.h> 27 #include <base/tracked_objects.h> 28 #include <hardware/bluetooth.h> 29 30 #include "bt_types.h" 31 #include "bta_api.h" 32 #include "osi/include/log.h" 33 #include "osi/include/osi.h" 34 35 /******************************************************************************* 36 * Constants & Macros 37 ******************************************************************************/ 38 39 #define ASSERTC(cond, msg, val) \ 40 do { \ 41 if (!(cond)) { \ 42 LOG_ERROR(LOG_TAG, "### ASSERT : %s %s line %d %s (%d) ###", __FILE__, \ 43 __func__, __LINE__, (msg), (val)); \ 44 } \ 45 } while (0) 46 47 /* Calculate start of event enumeration; id is top 8 bits of event */ 48 #define BTIF_SIG_START(id) ((id) << 8) 49 50 /* For upstream the MSB bit is always SET */ 51 #define BTIF_SIG_CB_BIT (0x8000) 52 #define BTIF_SIG_CB_START(id) (((id) << 8) | BTIF_SIG_CB_BIT) 53 54 /* 55 * A memcpy(3) wrapper when copying memory that might not be aligned. 56 * 57 * On certain architectures, if the memcpy(3) arguments appear to be 58 * pointing to aligned memory (e.g., struct pointers), the compiler might 59 * generate optimized memcpy(3) code. However, if the original memory was not 60 * aligned (e.g., because of incorrect "char *" to struct pointer casting), 61 * the result code might trigger SIGBUS crash. 62 * 63 * As a short-term solution, we use the help of the maybe_non_aligned_memcpy() 64 * macro to identify and fix such cases. In the future, we should fix the 65 * problematic "char *" to struct pointer casting, and this macro itself should 66 * be removed. 67 */ 68 #define maybe_non_aligned_memcpy(_a, _b, _c) \ 69 memcpy((void*)(_a), (void*)(_b), (_c)) 70 71 /* BTIF sub-systems */ 72 #define BTIF_CORE 0 73 #define BTIF_DM 1 74 #define BTIF_HFP 2 75 #define BTIF_AV 3 76 #define BTIF_PAN 4 77 #define BTIF_HF_CLIENT 5 78 79 extern bt_callbacks_t* bt_hal_cbacks; 80 81 #define HAL_CBACK(P_CB, P_CBACK, ...) \ 82 do { \ 83 if ((P_CB) && (P_CB)->P_CBACK) { \ 84 BTIF_TRACE_API("%s: HAL %s->%s", __func__, #P_CB, #P_CBACK); \ 85 (P_CB)->P_CBACK(__VA_ARGS__); \ 86 } else { \ 87 ASSERTC(0, "Callback is NULL", 0); \ 88 } \ 89 } while (0) 90 91 /** 92 * BTIF events for requests that require context switch to btif task 93 * on downstreams path 94 */ 95 enum { 96 BTIF_CORE_API_START = BTIF_SIG_START(BTIF_CORE), 97 BTIF_CORE_STORAGE_NO_ACTION, 98 BTIF_CORE_STORAGE_ADAPTER_WRITE, 99 BTIF_CORE_STORAGE_ADAPTER_READ, 100 BTIF_CORE_STORAGE_ADAPTER_READ_ALL, 101 BTIF_CORE_STORAGE_REMOTE_WRITE, 102 BTIF_CORE_STORAGE_REMOTE_READ, 103 BTIF_CORE_STORAGE_REMOTE_READ_ALL, 104 BTIF_CORE_STORAGE_READ_ALL, 105 BTIF_CORE_STORAGE_NOTIFY_STATUS, 106 /* add here */ 107 108 BTIF_DM_API_START = BTIF_SIG_START(BTIF_DM), 109 BTIF_DM_ENABLE_SERVICE, 110 BTIF_DM_DISABLE_SERVICE, 111 /* add here */ 112 113 BTIF_HFP_API_START = BTIF_SIG_START(BTIF_HFP), 114 /* add here */ 115 116 BTIF_AV_API_START = BTIF_SIG_START(BTIF_AV), 117 /* add here */ 118 }; 119 120 /** 121 * BTIF events for callbacks that require context switch to btif task 122 * on upstream path - Typically these would be non-BTA events 123 * that are generated by the BTIF layer. 124 */ 125 enum { 126 BTIF_CORE_CB_START = BTIF_SIG_CB_START(BTIF_CORE), 127 /* add here */ 128 129 BTIF_DM_CB_START = BTIF_SIG_CB_START(BTIF_DM), 130 BTIF_DM_CB_DISCOVERY_STARTED, /* Discovery has started */ 131 BTIF_DM_CB_CREATE_BOND, /* Create bond */ 132 BTIF_DM_CB_REMOVE_BOND, /*Remove bond */ 133 BTIF_DM_CB_HID_REMOTE_NAME, /* Remote name callback for HID device */ 134 BTIF_DM_CB_BOND_STATE_BONDING, 135 BTIF_DM_CB_LE_TX_TEST, /* BLE Tx Test command complete callback */ 136 BTIF_DM_CB_LE_RX_TEST, /* BLE Rx Test command complete callback */ 137 BTIF_DM_CB_LE_TEST_END, /* BLE Test mode end callback */ 138 139 BTIF_HFP_CB_START = BTIF_SIG_CB_START(BTIF_HFP), 140 BTIF_HFP_CB_AUDIO_CONNECTING, /* HF AUDIO connect has been sent to BTA 141 successfully */ 142 143 BTIF_PAN_CB_START = BTIF_SIG_CB_START(BTIF_PAN), 144 BTIF_PAN_CB_DISCONNECTING, /* PAN Disconnect has been sent to BTA successfully 145 */ 146 147 BTIF_HF_CLIENT_CLIENT_CB_START = BTIF_SIG_CB_START(BTIF_HF_CLIENT), 148 BTIF_HF_CLIENT_CB_AUDIO_CONNECTING, /* AUDIO connect has been sent to BTA 149 successfully */ 150 }; 151 152 /******************************************************************************* 153 * Type definitions for callback functions 154 ******************************************************************************/ 155 156 typedef void(tBTIF_CBACK)(uint16_t event, char* p_param); 157 typedef void(tBTIF_COPY_CBACK)(uint16_t event, char* p_dest, char* p_src); 158 159 /******************************************************************************* 160 * Type definitions and return values 161 ******************************************************************************/ 162 163 /* this type handles all btif context switches between BTU and HAL */ 164 typedef struct { 165 BT_HDR hdr; 166 tBTIF_CBACK* p_cb; /* context switch callback */ 167 168 /* parameters passed to callback */ 169 uint16_t event; /* message event id */ 170 char __attribute__((aligned)) p_param[]; /* parameter area needs to be last */ 171 } tBTIF_CONTEXT_SWITCH_CBACK; 172 173 /******************************************************************************* 174 * Functions 175 ******************************************************************************/ 176 177 extern bt_status_t do_in_jni_thread(const base::Closure& task); 178 extern bt_status_t do_in_jni_thread(const tracked_objects::Location& from_here, 179 const base::Closure& task); 180 extern bool is_on_jni_thread(); 181 extern base::MessageLoop* get_jni_message_loop(); 182 /** 183 * This template wraps callback into callback that will be executed on jni 184 * thread 185 */ 186 template <typename R, typename... Args> 187 base::Callback<R(Args...)> jni_thread_wrapper( 188 const tracked_objects::Location& from_here, base::Callback<R(Args...)> cb) { 189 return base::Bind( 190 [](const tracked_objects::Location& from_here, 191 base::Callback<R(Args...)> cb, Args... args) { 192 do_in_jni_thread(from_here, 193 base::Bind(cb, std::forward<Args>(args)...)); 194 }, 195 from_here, std::move(cb)); 196 } 197 198 tBTA_SERVICE_MASK btif_get_enabled_services_mask(void); 199 bt_status_t btif_enable_service(tBTA_SERVICE_ID service_id); 200 bt_status_t btif_disable_service(tBTA_SERVICE_ID service_id); 201 int btif_is_enabled(void); 202 203 /** 204 * BTIF_Events 205 */ 206 void btif_enable_bluetooth_evt(tBTA_STATUS status); 207 void btif_disable_bluetooth_evt(void); 208 void btif_adapter_properties_evt(bt_status_t status, uint32_t num_props, 209 bt_property_t* p_props); 210 void btif_remote_properties_evt(bt_status_t status, RawAddress* remote_addr, 211 uint32_t num_props, bt_property_t* p_props); 212 213 void bte_load_did_conf(const char* p_path); 214 void bte_main_boot_entry(void); 215 void bte_main_enable(void); 216 void bte_main_disable(void); 217 void bte_main_cleanup(void); 218 void bte_main_postload_cfg(void); 219 220 bt_status_t btif_transfer_context(tBTIF_CBACK* p_cback, uint16_t event, 221 char* p_params, int param_len, 222 tBTIF_COPY_CBACK* p_copy_cback); 223 224 void btif_init_ok(UNUSED_ATTR uint16_t event, UNUSED_ATTR char* p_param); 225 226 #endif /* BTIF_COMMON_H */ 227
