1 /****************************************************************************** 2 * 3 * Copyright (C) 2005-2012 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 /****************************************************************************** 20 * 21 * This file contains the HID host main functions and state machine. 22 * 23 ******************************************************************************/ 24 25 #include "bt_target.h" 26 27 #if defined(BTA_HH_INCLUDED) && (BTA_HH_INCLUDED == TRUE) 28 29 #include <string.h> 30 31 #include "bta_hh_api.h" 32 #include "bta_hh_int.h" 33 #include "bt_common.h" 34 35 /***************************************************************************** 36 ** Constants and types 37 *****************************************************************************/ 38 39 /* state machine action enumeration list */ 40 enum 41 { 42 BTA_HH_API_DISC_ACT, /* HID host process API close action */ 43 BTA_HH_OPEN_ACT, /* HID host process BTA_HH_EVT_OPEN */ 44 BTA_HH_CLOSE_ACT, /* HID host process BTA_HH_EVT_CLOSE */ 45 BTA_HH_DATA_ACT, /* HID host receive data report */ 46 BTA_HH_CTRL_DAT_ACT, 47 BTA_HH_HANDSK_ACT, 48 BTA_HH_START_SDP, /* HID host inquery */ 49 BTA_HH_SDP_CMPL, 50 BTA_HH_WRITE_DEV_ACT, 51 BTA_HH_GET_DSCP_ACT, 52 BTA_HH_MAINT_DEV_ACT, 53 BTA_HH_OPEN_CMPL_ACT, 54 BTA_HH_OPEN_FAILURE, 55 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 56 BTA_HH_GATT_CLOSE, 57 BTA_HH_LE_OPEN_FAIL, 58 BTA_HH_GATT_OPEN, 59 BTA_HH_W4_LE_READ_CHAR, 60 BTA_HH_LE_READ_CHAR, 61 BTA_HH_W4_LE_READ_DESCR, 62 BTA_HH_LE_READ_DESCR, 63 BTA_HH_W4_LE_WRITE, 64 BTA_HH_LE_WRITE, 65 BTA_HH_WRITE_DESCR, 66 BTA_HH_START_SEC, 67 BTA_HH_SEC_CMPL, 68 BTA_HH_LE_UPDATE_SCPP, 69 BTA_HH_GATT_ENC_CMPL, 70 #endif 71 BTA_HH_NUM_ACTIONS 72 }; 73 74 #define BTA_HH_IGNORE BTA_HH_NUM_ACTIONS 75 76 /* type for action functions */ 77 typedef void (*tBTA_HH_ACTION)(tBTA_HH_DEV_CB *p_cb, tBTA_HH_DATA *p_data); 78 79 /* action functions */ 80 const tBTA_HH_ACTION bta_hh_action[] = 81 { 82 bta_hh_api_disc_act, 83 bta_hh_open_act, 84 bta_hh_close_act, 85 bta_hh_data_act, 86 bta_hh_ctrl_dat_act, 87 bta_hh_handsk_act, 88 bta_hh_start_sdp, 89 bta_hh_sdp_cmpl, 90 bta_hh_write_dev_act, 91 bta_hh_get_dscp_act, 92 bta_hh_maint_dev_act, 93 bta_hh_open_cmpl_act, 94 bta_hh_open_failure 95 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 96 ,bta_hh_gatt_close 97 ,bta_hh_le_open_fail 98 ,bta_hh_gatt_open 99 ,bta_hh_w4_le_read_char_cmpl 100 ,bta_hh_le_read_char_cmpl 101 ,bta_hh_w4_le_read_descr_cmpl 102 ,bta_hh_le_read_descr_cmpl 103 ,bta_hh_w4_le_write_cmpl 104 ,bta_hh_le_write_cmpl 105 ,bta_hh_le_write_char_descr_cmpl 106 ,bta_hh_start_security 107 ,bta_hh_security_cmpl 108 ,bta_hh_le_update_scpp 109 ,bta_hh_le_notify_enc_cmpl 110 #endif 111 }; 112 113 /* state table information */ 114 #define BTA_HH_ACTION 0 /* position of action */ 115 #define BTA_HH_NEXT_STATE 1 /* position of next state */ 116 #define BTA_HH_NUM_COLS 2 /* number of columns */ 117 118 /* state table for idle state */ 119 const UINT8 bta_hh_st_idle[][BTA_HH_NUM_COLS] = 120 { 121 /* Event Action Next state */ 122 /* BTA_HH_API_OPEN_EVT */ {BTA_HH_START_SDP, BTA_HH_W4_CONN_ST }, 123 /* BTA_HH_API_CLOSE_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 124 /* BTA_HH_INT_OPEN_EVT */ {BTA_HH_OPEN_ACT, BTA_HH_W4_CONN_ST }, 125 /* BTA_HH_INT_CLOSE_EVT */ {BTA_HH_CLOSE_ACT, BTA_HH_IDLE_ST }, 126 /* BTA_HH_INT_DATA_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 127 /* BTA_HH_INT_CTRL_DATA */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 128 /* BTA_HH_INT_HANDSK_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 129 /* BTA_HH_SDP_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 130 /* BTA_HH_API_WRITE_DEV_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 131 /* BTA_HH_API_GET_DSCP_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 132 /* BTA_HH_API_MAINT_DEV_EVT */ {BTA_HH_MAINT_DEV_ACT, BTA_HH_IDLE_ST }, 133 /* BTA_HH_OPEN_CMPL_EVT */ {BTA_HH_OPEN_CMPL_ACT, BTA_HH_CONN_ST } 134 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 135 /* BTA_HH_GATT_CLOSE_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 136 /* BTA_HH_GATT_OPEN_EVT */ ,{BTA_HH_GATT_OPEN, BTA_HH_W4_CONN_ST } 137 /* BTA_HH_START_ENC_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 138 /* BTA_HH_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 139 /* READ_CHAR_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 140 /* BTA_HH_GATT_WRITE_CMPL_EVT*/ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 141 /* READ_DESCR_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 142 /* WRITE_DESCR_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 143 /* SCPP_UPDATE_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 144 /* BTA_HH_GATT_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_IDLE_ST } 145 #endif 146 147 }; 148 149 150 const UINT8 bta_hh_st_w4_conn[][BTA_HH_NUM_COLS] = 151 { 152 /* Event Action Next state */ 153 /* BTA_HH_API_OPEN_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_CONN_ST }, 154 /* BTA_HH_API_CLOSE_EVT */ {BTA_HH_IGNORE, BTA_HH_IDLE_ST }, 155 /* BTA_HH_INT_OPEN_EVT */ {BTA_HH_OPEN_ACT, BTA_HH_W4_CONN_ST }, 156 /* BTA_HH_INT_CLOSE_EVT */ {BTA_HH_OPEN_FAILURE, BTA_HH_IDLE_ST }, 157 /* BTA_HH_INT_DATA_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_CONN_ST }, 158 /* BTA_HH_INT_CTRL_DATA */ {BTA_HH_IGNORE, BTA_HH_W4_CONN_ST }, 159 /* BTA_HH_INT_HANDSK_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_CONN_ST }, 160 /* BTA_HH_SDP_CMPL_EVT */ {BTA_HH_SDP_CMPL, BTA_HH_W4_CONN_ST }, 161 /* BTA_HH_API_WRITE_DEV_EVT */ {BTA_HH_WRITE_DEV_ACT, BTA_HH_W4_CONN_ST }, 162 /* BTA_HH_API_GET_DSCP_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_CONN_ST }, 163 /* BTA_HH_API_MAINT_DEV_EVT */ {BTA_HH_MAINT_DEV_ACT, BTA_HH_IDLE_ST }, 164 /* BTA_HH_OPEN_CMPL_EVT */ {BTA_HH_OPEN_CMPL_ACT, BTA_HH_CONN_ST } 165 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 166 /* BTA_HH_GATT_CLOSE_EVT */ ,{BTA_HH_LE_OPEN_FAIL, BTA_HH_IDLE_ST } 167 /* BTA_HH_GATT_OPEN_EVT */ ,{BTA_HH_GATT_OPEN, BTA_HH_W4_CONN_ST } 168 /* BTA_HH_START_ENC_EVT */ ,{BTA_HH_START_SEC, BTA_HH_W4_SEC } 169 /* BTA_HH_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_W4_CONN_ST } 170 /* READ_CHAR_CMPL_EVT */ ,{BTA_HH_W4_LE_READ_CHAR, BTA_HH_W4_CONN_ST } 171 /* BTA_HH_GATT_WRITE_CMPL_EVT*/ ,{BTA_HH_W4_LE_WRITE, BTA_HH_W4_CONN_ST } 172 /* READ_DESCR_CMPL_EVT */ ,{BTA_HH_W4_LE_READ_DESCR, BTA_HH_W4_CONN_ST } 173 /* WRITE_DESCR_CMPL_EVT */ ,{BTA_HH_WRITE_DESCR, BTA_HH_W4_CONN_ST } 174 /* SCPP_UPDATE_EVT */ ,{BTA_HH_IGNORE, BTA_HH_W4_CONN_ST } 175 /* BTA_HH_GATT_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_W4_CONN_ST } 176 #endif 177 }; 178 179 180 const UINT8 bta_hh_st_connected[][BTA_HH_NUM_COLS] = 181 { 182 /* Event Action Next state */ 183 /* BTA_HH_API_OPEN_EVT */ {BTA_HH_IGNORE, BTA_HH_CONN_ST }, 184 /* BTA_HH_API_CLOSE_EVT */ {BTA_HH_API_DISC_ACT, BTA_HH_CONN_ST }, 185 /* BTA_HH_INT_OPEN_EVT */ {BTA_HH_OPEN_ACT, BTA_HH_CONN_ST }, 186 /* BTA_HH_INT_CLOSE_EVT */ {BTA_HH_CLOSE_ACT, BTA_HH_IDLE_ST }, 187 /* BTA_HH_INT_DATA_EVT */ {BTA_HH_DATA_ACT, BTA_HH_CONN_ST }, 188 /* BTA_HH_INT_CTRL_DATA */ {BTA_HH_CTRL_DAT_ACT, BTA_HH_CONN_ST }, 189 /* BTA_HH_INT_HANDSK_EVT */ {BTA_HH_HANDSK_ACT, BTA_HH_CONN_ST }, 190 /* BTA_HH_SDP_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_CONN_ST }, 191 /* BTA_HH_API_WRITE_DEV_EVT */ {BTA_HH_WRITE_DEV_ACT, BTA_HH_CONN_ST }, 192 /* BTA_HH_API_GET_DSCP_EVT */ {BTA_HH_GET_DSCP_ACT, BTA_HH_CONN_ST }, 193 /* BTA_HH_API_MAINT_DEV_EVT */ {BTA_HH_MAINT_DEV_ACT, BTA_HH_CONN_ST }, 194 /* BTA_HH_OPEN_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_CONN_ST } 195 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 196 /* BTA_HH_GATT_CLOSE_EVT */ ,{BTA_HH_GATT_CLOSE, BTA_HH_IDLE_ST } 197 /* BTA_HH_GATT_OPEN_EVT */ ,{BTA_HH_IGNORE, BTA_HH_CONN_ST } 198 /* BTA_HH_START_ENC_EVT */ ,{BTA_HH_IGNORE, BTA_HH_CONN_ST } 199 /* BTA_HH_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_CONN_ST } 200 /* READ_CHAR_CMPL_EVT */ ,{BTA_HH_LE_READ_CHAR, BTA_HH_CONN_ST } 201 /* WRITE_CHAR_CMPL_EVT*/ ,{BTA_HH_LE_WRITE, BTA_HH_CONN_ST } 202 /* READ_DESCR_CMPL_EVT */ ,{BTA_HH_LE_READ_DESCR, BTA_HH_CONN_ST } /* do not currently read any descr when connection up */ 203 /* WRITE_DESCR_CMPL_EVT */ ,{BTA_HH_WRITE_DESCR, BTA_HH_CONN_ST } /* do not currently write any descr when connection up */ 204 /* SCPP_UPDATE_EVT */ ,{BTA_HH_LE_UPDATE_SCPP, BTA_HH_CONN_ST } 205 /* BTA_HH_GATT_ENC_CMPL_EVT */ ,{BTA_HH_IGNORE, BTA_HH_CONN_ST } 206 #endif 207 }; 208 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 209 const UINT8 bta_hh_st_w4_sec[][BTA_HH_NUM_COLS] = 210 { 211 /* Event Action Next state */ 212 /* BTA_HH_API_OPEN_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 213 /* BTA_HH_API_CLOSE_EVT */ {BTA_HH_API_DISC_ACT, BTA_HH_W4_SEC }, 214 /* BTA_HH_INT_OPEN_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 215 /* BTA_HH_INT_CLOSE_EVT */ {BTA_HH_OPEN_FAILURE, BTA_HH_IDLE_ST }, 216 /* BTA_HH_INT_DATA_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 217 /* BTA_HH_INT_CTRL_DATA */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 218 /* BTA_HH_INT_HANDSK_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 219 /* BTA_HH_SDP_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 220 /* BTA_HH_API_WRITE_DEV_EVT */ {BTA_HH_IGNORE , BTA_HH_W4_SEC }, 221 /* BTA_HH_API_GET_DSCP_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 222 /* BTA_HH_API_MAINT_DEV_EVT */ {BTA_HH_MAINT_DEV_ACT, BTA_HH_W4_SEC }, 223 /* BTA_HH_OPEN_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 224 /* BTA_HH_GATT_CLOSE_EVT */ {BTA_HH_LE_OPEN_FAIL, BTA_HH_IDLE_ST }, 225 /* BTA_HH_GATT_OPEN_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 226 /* BTA_HH_START_ENC_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 227 /* BTA_HH_ENC_CMPL_EVT */ {BTA_HH_SEC_CMPL, BTA_HH_W4_CONN_ST }, 228 /* READ_CHAR_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 229 /* BTA_HH_GATT_WRITE_CMPL_EVT*/ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 230 /* READ_DESCR_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC }, 231 /* WRITE_DESCR_CMPL_EVT */ {BTA_HH_IGNORE, BTA_HH_W4_SEC } 232 /* SCPP_UPDATE_EVT */ ,{BTA_HH_IGNORE, BTA_HH_W4_SEC } 233 /* BTA_HH_GATT_ENC_CMPL_EVT */ ,{BTA_HH_GATT_ENC_CMPL, BTA_HH_W4_SEC } 234 }; 235 #endif 236 237 /* type for state table */ 238 typedef const UINT8 (*tBTA_HH_ST_TBL)[BTA_HH_NUM_COLS]; 239 240 /* state table */ 241 const tBTA_HH_ST_TBL bta_hh_st_tbl[] = 242 { 243 bta_hh_st_idle, 244 bta_hh_st_w4_conn, 245 bta_hh_st_connected 246 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 247 ,bta_hh_st_w4_sec 248 #endif 249 }; 250 251 /***************************************************************************** 252 ** Global data 253 *****************************************************************************/ 254 #if BTA_DYNAMIC_MEMORY == FALSE 255 tBTA_HH_CB bta_hh_cb; 256 #endif 257 /***************************************************************************** 258 ** Static functions 259 *****************************************************************************/ 260 #if BTA_HH_DEBUG == TRUE 261 static char *bta_hh_evt_code(tBTA_HH_INT_EVT evt_code); 262 static char *bta_hh_state_code(tBTA_HH_STATE state_code); 263 #endif 264 265 /******************************************************************************* 266 ** 267 ** Function bta_hh_sm_execute 268 ** 269 ** Description State machine event handling function for HID Host 270 ** 271 ** 272 ** Returns void 273 ** 274 *******************************************************************************/ 275 void bta_hh_sm_execute(tBTA_HH_DEV_CB *p_cb, UINT16 event, tBTA_HH_DATA * p_data) 276 { 277 tBTA_HH_ST_TBL state_table; 278 UINT8 action; 279 tBTA_HH cback_data; 280 tBTA_HH_EVT cback_event = 0; 281 #if BTA_HH_DEBUG == TRUE 282 tBTA_HH_STATE in_state ; 283 UINT16 debug_event = event; 284 #endif 285 286 memset(&cback_data, 0, sizeof(tBTA_HH)); 287 288 /* handle exception, no valid control block was found */ 289 if (!p_cb) 290 { 291 /* BTA HH enabled already? otherwise ignore the event although it's bad*/ 292 if (bta_hh_cb.p_cback != NULL) 293 { 294 switch (event) 295 { 296 /* no control block available for new connection */ 297 case BTA_HH_API_OPEN_EVT: 298 cback_event = BTA_HH_OPEN_EVT; 299 /* build cback data */ 300 bdcpy(cback_data.conn.bda, ((tBTA_HH_API_CONN *)p_data)->bd_addr); 301 cback_data.conn.status = BTA_HH_ERR_DB_FULL; 302 cback_data.conn.handle = BTA_HH_INVALID_HANDLE; 303 break; 304 /* DB full, BTA_HhAddDev */ 305 case BTA_HH_API_MAINT_DEV_EVT: 306 cback_event = p_data->api_maintdev.sub_event; 307 308 if (p_data->api_maintdev.sub_event == BTA_HH_ADD_DEV_EVT) 309 { 310 bdcpy(cback_data.dev_info.bda, p_data->api_maintdev.bda); 311 cback_data.dev_info.status = BTA_HH_ERR_DB_FULL; 312 cback_data.dev_info.handle = BTA_HH_INVALID_HANDLE; 313 } 314 else 315 { 316 cback_data.dev_info.status = BTA_HH_ERR_HDL; 317 cback_data.dev_info.handle = (UINT8)p_data->api_maintdev.hdr.layer_specific; 318 } 319 break; 320 case BTA_HH_API_WRITE_DEV_EVT: 321 cback_event = (p_data->api_sndcmd.t_type - BTA_HH_FST_BTE_TRANS_EVT) + 322 BTA_HH_FST_TRANS_CB_EVT; 323 osi_free_and_reset((void **)&p_data->api_sndcmd.p_data); 324 if (p_data->api_sndcmd.t_type == HID_TRANS_SET_PROTOCOL || 325 p_data->api_sndcmd.t_type == HID_TRANS_SET_REPORT || 326 p_data->api_sndcmd.t_type == HID_TRANS_SET_IDLE) 327 { 328 cback_data.dev_status.status = BTA_HH_ERR_HDL; 329 cback_data.dev_status.handle = (UINT8)p_data->api_sndcmd.hdr.layer_specific; 330 } 331 else if (p_data->api_sndcmd.t_type != HID_TRANS_DATA && 332 p_data->api_sndcmd.t_type != HID_TRANS_CONTROL) 333 { 334 cback_data.hs_data.handle = (UINT8)p_data->api_sndcmd.hdr.layer_specific; 335 cback_data.hs_data.status = BTA_HH_ERR_HDL; 336 /* hs_data.rsp_data will be all zero, which is not valid value */ 337 } 338 else if (p_data->api_sndcmd.t_type == HID_TRANS_CONTROL && 339 p_data->api_sndcmd.param == BTA_HH_CTRL_VIRTUAL_CABLE_UNPLUG) 340 { 341 cback_data.status = BTA_HH_ERR_HDL; 342 cback_event = BTA_HH_VC_UNPLUG_EVT; 343 } 344 else 345 cback_event = 0; 346 break; 347 348 case BTA_HH_API_CLOSE_EVT: 349 cback_event = BTA_HH_CLOSE_EVT; 350 351 cback_data.dev_status.status = BTA_HH_ERR_HDL; 352 cback_data.dev_status.handle = (UINT8)p_data->api_sndcmd.hdr.layer_specific; 353 break; 354 355 default: 356 /* invalid handle, call bad API event */ 357 APPL_TRACE_ERROR("wrong device handle: [%d]", p_data->hdr.layer_specific); 358 /* Free the callback buffer now */ 359 if (p_data != NULL) 360 osi_free_and_reset((void **)&p_data->hid_cback.p_data); 361 break; 362 } 363 if (cback_event) 364 (* bta_hh_cb.p_cback)(cback_event, &cback_data); 365 } 366 } 367 /* corresponding CB is found, go to state machine */ 368 else 369 { 370 #if BTA_HH_DEBUG == TRUE 371 in_state = p_cb->state; 372 APPL_TRACE_EVENT("bta_hh_sm_execute: State 0x%02x [%s], Event [%s]", 373 in_state, bta_hh_state_code(in_state), 374 bta_hh_evt_code(debug_event)); 375 #endif 376 377 if ((p_cb->state == BTA_HH_NULL_ST) || (p_cb->state >= BTA_HH_INVALID_ST)) 378 { 379 APPL_TRACE_ERROR("bta_hh_sm_execute: Invalid state State = 0x%x, Event = %d", 380 p_cb->state,event); 381 return; 382 } 383 state_table = bta_hh_st_tbl[p_cb->state - 1]; 384 385 event &= 0xff; 386 387 p_cb->state = state_table[event][BTA_HH_NEXT_STATE] ; 388 389 if ((action = state_table[event][BTA_HH_ACTION]) != BTA_HH_IGNORE) 390 { 391 (*bta_hh_action[action])(p_cb, p_data); 392 } 393 394 #if BTA_HH_DEBUG == TRUE 395 if (in_state != p_cb->state) 396 { 397 APPL_TRACE_DEBUG("HH State Change: [%s] -> [%s] after Event [%s]", 398 bta_hh_state_code(in_state), 399 bta_hh_state_code(p_cb->state), 400 bta_hh_evt_code(debug_event)); 401 } 402 #endif 403 } 404 405 return; 406 } 407 /******************************************************************************* 408 ** 409 ** Function bta_hh_hdl_event 410 ** 411 ** Description HID host main event handling function. 412 ** 413 ** 414 ** Returns void 415 ** 416 *******************************************************************************/ 417 BOOLEAN bta_hh_hdl_event(BT_HDR *p_msg) 418 { 419 UINT8 index = BTA_HH_IDX_INVALID; 420 tBTA_HH_DEV_CB *p_cb = NULL; 421 422 switch (p_msg->event) 423 { 424 case BTA_HH_API_ENABLE_EVT: 425 bta_hh_api_enable((tBTA_HH_DATA *) p_msg); 426 break; 427 428 case BTA_HH_API_DISABLE_EVT: 429 bta_hh_api_disable(); 430 break; 431 432 case BTA_HH_DISC_CMPL_EVT: /* disable complete */ 433 bta_hh_disc_cmpl(); 434 break; 435 436 default: 437 /* all events processed in state machine need to find corresponding 438 CB before proceed */ 439 if (p_msg->event == BTA_HH_API_OPEN_EVT) 440 { 441 index = bta_hh_find_cb(((tBTA_HH_API_CONN *)p_msg)->bd_addr); 442 } 443 else if (p_msg->event == BTA_HH_API_MAINT_DEV_EVT) 444 { 445 /* if add device */ 446 if (((tBTA_HH_MAINT_DEV *)p_msg)->sub_event == BTA_HH_ADD_DEV_EVT) 447 { 448 index = bta_hh_find_cb(((tBTA_HH_MAINT_DEV *)p_msg)->bda); 449 } 450 else /* else remove device by handle */ 451 { 452 index = bta_hh_dev_handle_to_cb_idx((UINT8)p_msg->layer_specific); 453 /* If BT disable is done while the HID device is connected and Link_Key uses unauthenticated combination 454 * then we can get into a situation where remove_bonding is called with the index set to 0 (without getting 455 * cleaned up). Only when VIRTUAL_UNPLUG is called do we cleanup the index and make it MAX_KNOWN. 456 * So if REMOVE_DEVICE is called and in_use is FALSE then we should treat this as a NULL p_cb. Hence we 457 * force the index to be IDX_INVALID 458 */ 459 if ((index != BTA_HH_IDX_INVALID) && 460 (bta_hh_cb.kdev[index].in_use == FALSE)) { 461 index = BTA_HH_IDX_INVALID; 462 } 463 } 464 } 465 else if (p_msg->event == BTA_HH_INT_OPEN_EVT) 466 { 467 index = bta_hh_find_cb(((tBTA_HH_CBACK_DATA *)p_msg)->addr); 468 } 469 else 470 index = bta_hh_dev_handle_to_cb_idx((UINT8)p_msg->layer_specific); 471 472 if (index != BTA_HH_IDX_INVALID) 473 p_cb = &bta_hh_cb.kdev[index]; 474 475 #if BTA_HH_DEBUG 476 APPL_TRACE_DEBUG("bta_hh_hdl_event:: handle = %d dev_cb[%d] ", p_msg->layer_specific, index); 477 #endif 478 bta_hh_sm_execute(p_cb, p_msg->event, (tBTA_HH_DATA *) p_msg); 479 } 480 return (TRUE); 481 } 482 483 /***************************************************************************** 484 ** Debug Functions 485 *****************************************************************************/ 486 #if BTA_HH_DEBUG 487 /******************************************************************************* 488 ** 489 ** Function bta_hh_evt_code 490 ** 491 ** Description 492 ** 493 ** Returns void 494 ** 495 *******************************************************************************/ 496 static char *bta_hh_evt_code(tBTA_HH_INT_EVT evt_code) 497 { 498 switch(evt_code) 499 { 500 case BTA_HH_API_DISABLE_EVT: 501 return "BTA_HH_API_DISABLE_EVT"; 502 case BTA_HH_API_ENABLE_EVT: 503 return "BTA_HH_API_ENABLE_EVT"; 504 case BTA_HH_API_OPEN_EVT: 505 return "BTA_HH_API_OPEN_EVT"; 506 case BTA_HH_API_CLOSE_EVT: 507 return "BTA_HH_API_CLOSE_EVT"; 508 case BTA_HH_INT_OPEN_EVT: 509 return "BTA_HH_INT_OPEN_EVT"; 510 case BTA_HH_INT_CLOSE_EVT: 511 return "BTA_HH_INT_CLOSE_EVT"; 512 case BTA_HH_INT_HANDSK_EVT: 513 return "BTA_HH_INT_HANDSK_EVT"; 514 case BTA_HH_INT_DATA_EVT: 515 return "BTA_HH_INT_DATA_EVT"; 516 case BTA_HH_INT_CTRL_DATA: 517 return "BTA_HH_INT_CTRL_DATA"; 518 case BTA_HH_API_WRITE_DEV_EVT: 519 return "BTA_HH_API_WRITE_DEV_EVT"; 520 case BTA_HH_SDP_CMPL_EVT: 521 return "BTA_HH_SDP_CMPL_EVT"; 522 case BTA_HH_DISC_CMPL_EVT: 523 return "BTA_HH_DISC_CMPL_EVT"; 524 case BTA_HH_API_MAINT_DEV_EVT: 525 return "BTA_HH_API_MAINT_DEV_EVT"; 526 case BTA_HH_API_GET_DSCP_EVT: 527 return "BTA_HH_API_GET_DSCP_EVT"; 528 case BTA_HH_OPEN_CMPL_EVT: 529 return "BTA_HH_OPEN_CMPL_EVT"; 530 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 531 case BTA_HH_GATT_CLOSE_EVT: 532 return "BTA_HH_GATT_CLOSE_EVT"; 533 case BTA_HH_GATT_OPEN_EVT: 534 return "BTA_HH_GATT_OPEN_EVT"; 535 case BTA_HH_START_ENC_EVT: 536 return "BTA_HH_START_ENC_EVT"; 537 case BTA_HH_ENC_CMPL_EVT: 538 return "BTA_HH_ENC_CMPL_EVT"; 539 case BTA_HH_GATT_READ_CHAR_CMPL_EVT: 540 return "BTA_HH_GATT_READ_CHAR_CMPL_EVT"; 541 case BTA_HH_GATT_WRITE_CHAR_CMPL_EVT: 542 return "BTA_HH_GATT_WRITE_CHAR_CMPL_EVT"; 543 case BTA_HH_GATT_READ_DESCR_CMPL_EVT: 544 return "BTA_HH_GATT_READ_DESCR_CMPL_EVT"; 545 case BTA_HH_GATT_WRITE_DESCR_CMPL_EVT: 546 return "BTA_HH_GATT_WRITE_DESCR_CMPL_EVT"; 547 #endif 548 default: 549 return "unknown HID Host event code"; 550 } 551 } 552 553 /******************************************************************************* 554 ** 555 ** Function bta_hh_state_code 556 ** 557 ** Description get string representation of HID host state code. 558 ** 559 ** Returns void 560 ** 561 *******************************************************************************/ 562 static char *bta_hh_state_code(tBTA_HH_STATE state_code) 563 { 564 switch (state_code) 565 { 566 case BTA_HH_NULL_ST: 567 return"BTA_HH_NULL_ST"; 568 case BTA_HH_IDLE_ST: 569 return "BTA_HH_IDLE_ST"; 570 case BTA_HH_W4_CONN_ST: 571 return "BTA_HH_W4_CONN_ST"; 572 case BTA_HH_CONN_ST: 573 return "BTA_HH_CONN_ST"; 574 #if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE) 575 case BTA_HH_W4_SEC: 576 return "BTA_HH_W4_SEC"; 577 #endif 578 default: 579 return "unknown HID Host state"; 580 } 581 } 582 583 #endif /* Debug Functions */ 584 585 #endif /* BTA_HH_INCLUDED */ 586
