1/****************************************************************************** 2 * 3 * Copyright (C) 2002-2012 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 module contains the channel control block state machine and 22 * functions which operate on the channel control block. 23 * 24 ******************************************************************************/ 25 26#include <string.h> 27#include "bt_types.h" 28#include "bt_target.h" 29#include "bt_utils.h" 30#include "avdt_api.h" 31#include "avdtc_api.h" 32#include "avdt_int.h" 33#include "bt_common.h" 34#include "btu.h" 35 36/***************************************************************************** 37** state machine constants and types 38*****************************************************************************/ 39#if AVDT_DEBUG == TRUE 40 41/* verbose state strings for trace */ 42const char * const avdt_ccb_st_str[] = { 43 "CCB_IDLE_ST", 44 "CCB_OPENING_ST", 45 "CCB_OPEN_ST", 46 "CCB_CLOSING_ST" 47}; 48 49/* verbose event strings for trace */ 50const char * const avdt_ccb_evt_str[] = { 51 "API_DISCOVER_REQ_EVT", 52 "API_GETCAP_REQ_EVT", 53 "API_START_REQ_EVT", 54 "API_SUSPEND_REQ_EVT", 55 "API_DISCOVER_RSP_EVT", 56 "API_GETCAP_RSP_EVT", 57 "API_START_RSP_EVT", 58 "API_SUSPEND_RSP_EVT", 59 "API_CONNECT_REQ_EVT", 60 "API_DISCONNECT_REQ_EVT", 61 "MSG_DISCOVER_CMD_EVT", 62 "MSG_GETCAP_CMD_EVT", 63 "MSG_START_CMD_EVT", 64 "MSG_SUSPEND_CMD_EVT", 65 "MSG_DISCOVER_RSP_EVT", 66 "MSG_GETCAP_RSP_EVT", 67 "MSG_START_RSP_EVT", 68 "MSG_SUSPEND_RSP_EVT", 69 "RCVRSP_EVT", 70 "SENDMSG_EVT", 71 "RET_TOUT_EVT", 72 "RSP_TOUT_EVT", 73 "IDLE_TOUT_EVT", 74 "UL_OPEN_EVT", 75 "UL_CLOSE_EVT", 76 "LL_OPEN_EVT", 77 "LL_CLOSE_EVT", 78 "LL_CONG_EVT" 79}; 80 81#endif 82 83 84/* action function list */ 85const tAVDT_CCB_ACTION avdt_ccb_action[] = { 86 avdt_ccb_chan_open, 87 avdt_ccb_chan_close, 88 avdt_ccb_chk_close, 89 avdt_ccb_hdl_discover_cmd, 90 avdt_ccb_hdl_discover_rsp, 91 avdt_ccb_hdl_getcap_cmd, 92 avdt_ccb_hdl_getcap_rsp, 93 avdt_ccb_hdl_start_cmd, 94 avdt_ccb_hdl_start_rsp, 95 avdt_ccb_hdl_suspend_cmd, 96 avdt_ccb_hdl_suspend_rsp, 97 avdt_ccb_snd_discover_cmd, 98 avdt_ccb_snd_discover_rsp, 99 avdt_ccb_snd_getcap_cmd, 100 avdt_ccb_snd_getcap_rsp, 101 avdt_ccb_snd_start_cmd, 102 avdt_ccb_snd_start_rsp, 103 avdt_ccb_snd_suspend_cmd, 104 avdt_ccb_snd_suspend_rsp, 105 avdt_ccb_clear_cmds, 106 avdt_ccb_cmd_fail, 107 avdt_ccb_free_cmd, 108 avdt_ccb_cong_state, 109 avdt_ccb_ret_cmd, 110 avdt_ccb_snd_cmd, 111 avdt_ccb_snd_msg, 112 avdt_ccb_set_reconn, 113 avdt_ccb_clr_reconn, 114 avdt_ccb_chk_reconn, 115 avdt_ccb_chk_timer, 116 avdt_ccb_set_conn, 117 avdt_ccb_set_disconn, 118 avdt_ccb_do_disconn, 119 avdt_ccb_ll_closed, 120 avdt_ccb_ll_opened, 121 avdt_ccb_dealloc 122}; 123 124/* state table information */ 125#define AVDT_CCB_ACTIONS 2 /* number of actions */ 126#define AVDT_CCB_NEXT_STATE 2 /* position of next state */ 127#define AVDT_CCB_NUM_COLS 3 /* number of columns in state tables */ 128 129/* state table for idle state */ 130const UINT8 avdt_ccb_st_idle[][AVDT_CCB_NUM_COLS] = { 131/* Event Action 1 Action 2 Next state */ 132/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 133/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 134/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 135/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 136/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 137/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 138/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 139/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 140/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_CHAN_OPEN, AVDT_CCB_OPENING_ST}, 141/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 142/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 143/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 144/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 145/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 146/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 147/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 148/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 149/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 150/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 151/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 152/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 153/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 154/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 155/* UL_OPEN_EVT */ {AVDT_CCB_CHAN_OPEN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 156/* UL_CLOSE_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 157/* LL_OPEN_EVT */ {AVDT_CCB_LL_OPENED, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 158/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 159/* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST} 160}; 161 162/* state table for opening state */ 163const UINT8 avdt_ccb_st_opening[][AVDT_CCB_NUM_COLS] = { 164/* Event Action 1 Action 2 Next state */ 165/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 166/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 167/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 168/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 169/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 170/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 171/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 172/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 173/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 174/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, 175/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 176/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 177/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 178/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 179/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 180/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 181/* MSG_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 182/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 183/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 184/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 185/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 186/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 187/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 188/* UL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST}, 189/* UL_CLOSE_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, 190/* LL_OPEN_EVT */ {AVDT_CCB_SND_CMD, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, 191/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 192/* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_IGNORE, AVDT_CCB_OPENING_ST} 193}; 194 195/* state table for open state */ 196const UINT8 avdt_ccb_st_open[][AVDT_CCB_NUM_COLS] = { 197/* Event Action 1 Action 2 Next state */ 198/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 199/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 200/* API_START_REQ_EVT */ {AVDT_CCB_SND_START_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 201/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_SND_SUSPEND_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 202/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_SND_DISCOVER_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 203/* API_GETCAP_RSP_EVT */ {AVDT_CCB_SND_GETCAP_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 204/* API_START_RSP_EVT */ {AVDT_CCB_SND_START_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 205/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_SND_SUSPEND_RSP, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 206/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_CONN, AVDT_CCB_LL_OPENED, AVDT_CCB_OPEN_ST}, 207/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_SET_DISCONN, AVDT_CCB_DO_DISCONN, AVDT_CCB_CLOSING_ST}, 208/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_HDL_DISCOVER_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 209/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_HDL_GETCAP_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 210/* MSG_START_CMD_EVT */ {AVDT_CCB_HDL_START_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 211/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_HDL_SUSPEND_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 212/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_OPEN_ST}, 213/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_OPEN_ST}, 214/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 215/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 216/* RCVRSP_EVT */ {AVDT_CCB_FREE_CMD, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 217/* SENDMSG_EVT */ {AVDT_CCB_SND_MSG, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 218/* RET_TOUT_EVT */ {AVDT_CCB_RET_CMD, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 219/* RSP_TOUT_EVT */ {AVDT_CCB_CMD_FAIL, AVDT_CCB_SND_CMD, AVDT_CCB_OPEN_ST}, 220/* IDLE_TOUT_EVT */ {AVDT_CCB_CLEAR_CMDS, AVDT_CCB_CHAN_CLOSE, AVDT_CCB_CLOSING_ST}, 221/* UL_OPEN_EVT */ {AVDT_CCB_CHK_TIMER, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 222/* UL_CLOSE_EVT */ {AVDT_CCB_CHK_CLOSE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 223/* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_OPEN_ST}, 224/* LL_CLOSE_EVT */ {AVDT_CCB_LL_CLOSED, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 225/* LL_CONG_EVT */ {AVDT_CCB_CONG_STATE, AVDT_CCB_SND_MSG, AVDT_CCB_OPEN_ST} 226}; 227 228/* state table for closing state */ 229const UINT8 avdt_ccb_st_closing[][AVDT_CCB_NUM_COLS] = { 230/* Event Action 1 Action 2 Next state */ 231/* API_DISCOVER_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_DISCOVER_CMD, AVDT_CCB_CLOSING_ST}, 232/* API_GETCAP_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SND_GETCAP_CMD, AVDT_CCB_CLOSING_ST}, 233/* API_START_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 234/* API_SUSPEND_REQ_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 235/* API_DISCOVER_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 236/* API_GETCAP_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 237/* API_START_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 238/* API_SUSPEND_RSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 239/* API_CONNECT_REQ_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_SET_CONN, AVDT_CCB_CLOSING_ST}, 240/* API_DISCONNECT_REQ_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_SET_DISCONN, AVDT_CCB_CLOSING_ST}, 241/* MSG_DISCOVER_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 242/* MSG_GETCAP_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 243/* MSG_START_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 244/* MSG_SUSPEND_CMD_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 245/* MSG_DISCOVER_RSP_EVT */ {AVDT_CCB_HDL_DISCOVER_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 246/* MSG_GETCAP_RSP_EVT */ {AVDT_CCB_HDL_GETCAP_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 247/* MSG_START_RSP_EVT */ {AVDT_CCB_HDL_START_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 248/* MSG_SUSPEND_RSP_EVT */ {AVDT_CCB_HDL_SUSPEND_RSP, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 249/* RCVRSP_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 250/* SENDMSG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 251/* RET_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 252/* RSP_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 253/* IDLE_TOUT_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 254/* UL_OPEN_EVT */ {AVDT_CCB_SET_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 255/* UL_CLOSE_EVT */ {AVDT_CCB_CLR_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 256/* LL_OPEN_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST}, 257/* LL_CLOSE_EVT */ {AVDT_CCB_CHK_RECONN, AVDT_CCB_IGNORE, AVDT_CCB_IDLE_ST}, 258/* LL_CONG_EVT */ {AVDT_CCB_IGNORE, AVDT_CCB_IGNORE, AVDT_CCB_CLOSING_ST} 259}; 260 261/* type for state table */ 262typedef const UINT8 (*tAVDT_CCB_ST_TBL)[AVDT_CCB_NUM_COLS]; 263 264/* state table */ 265const tAVDT_CCB_ST_TBL avdt_ccb_st_tbl[] = { 266 avdt_ccb_st_idle, 267 avdt_ccb_st_opening, 268 avdt_ccb_st_open, 269 avdt_ccb_st_closing 270}; 271 272/******************************************************************************* 273** 274** Function avdt_ccb_init 275** 276** Description Initialize channel control block module. 277** 278** 279** Returns Nothing. 280** 281*******************************************************************************/ 282void avdt_ccb_init(void) 283{ 284 memset(&avdt_cb.ccb[0], 0, sizeof(tAVDT_CCB) * AVDT_NUM_LINKS); 285 avdt_cb.p_ccb_act = (tAVDT_CCB_ACTION *) avdt_ccb_action; 286} 287 288/******************************************************************************* 289** 290** Function avdt_ccb_event 291** 292** Description State machine event handling function for ccb 293** 294** 295** Returns Nothing. 296** 297*******************************************************************************/ 298void avdt_ccb_event(tAVDT_CCB *p_ccb, UINT8 event, tAVDT_CCB_EVT *p_data) 299{ 300 tAVDT_CCB_ST_TBL state_table; 301 UINT8 action; 302 int i; 303 304#if AVDT_DEBUG == TRUE 305 AVDT_TRACE_EVENT("CCB ccb=%d event=%s state=%s", avdt_ccb_to_idx(p_ccb), avdt_ccb_evt_str[event], avdt_ccb_st_str[p_ccb->state]); 306#endif 307 308 /* look up the state table for the current state */ 309 state_table = avdt_ccb_st_tbl[p_ccb->state]; 310 311 /* set next state */ 312 if (p_ccb->state != state_table[event][AVDT_CCB_NEXT_STATE]) { 313 p_ccb->state = state_table[event][AVDT_CCB_NEXT_STATE]; 314 } 315 316 /* execute action functions */ 317 for (i = 0; i < AVDT_CCB_ACTIONS; i++) 318 { 319 if ((action = state_table[event][i]) != AVDT_CCB_IGNORE) 320 { 321 (*avdt_cb.p_ccb_act[action])(p_ccb, p_data); 322 } 323 else 324 { 325 break; 326 } 327 } 328} 329 330 331/******************************************************************************* 332** 333** Function avdt_ccb_by_bd 334** 335** Description This lookup function finds the ccb for a BD address. 336** 337** 338** Returns pointer to the ccb, or NULL if none found. 339** 340*******************************************************************************/ 341tAVDT_CCB *avdt_ccb_by_bd(BD_ADDR bd_addr) 342{ 343 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; 344 int i; 345 346 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) 347 { 348 /* if allocated ccb has matching ccb */ 349 if (p_ccb->allocated && (!memcmp(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN))) 350 { 351 break; 352 } 353 } 354 355 if (i == AVDT_NUM_LINKS) 356 { 357 /* if no ccb found */ 358 p_ccb = NULL; 359 360 AVDT_TRACE_DEBUG("No ccb for addr %02x-%02x-%02x-%02x-%02x-%02x", 361 bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4], bd_addr[5]); 362 } 363 return p_ccb; 364} 365 366/******************************************************************************* 367** 368** Function avdt_ccb_alloc 369** 370** Description Allocate a channel control block. 371** 372** 373** Returns pointer to the ccb, or NULL if none could be allocated. 374** 375*******************************************************************************/ 376tAVDT_CCB *avdt_ccb_alloc(BD_ADDR bd_addr) 377{ 378 tAVDT_CCB *p_ccb = &avdt_cb.ccb[0]; 379 int i; 380 381 for (i = 0; i < AVDT_NUM_LINKS; i++, p_ccb++) 382 { 383 if (!p_ccb->allocated) 384 { 385 p_ccb->allocated = TRUE; 386 memcpy(p_ccb->peer_addr, bd_addr, BD_ADDR_LEN); 387 p_ccb->cmd_q = fixed_queue_new(SIZE_MAX); 388 p_ccb->rsp_q = fixed_queue_new(SIZE_MAX); 389 p_ccb->idle_ccb_timer = alarm_new("avdt_ccb.idle_ccb_timer"); 390 p_ccb->ret_ccb_timer = alarm_new("avdt_ccb.ret_ccb_timer"); 391 p_ccb->rsp_ccb_timer = alarm_new("avdt_ccb.rsp_ccb_timer"); 392 AVDT_TRACE_DEBUG("avdt_ccb_alloc %d", i); 393 break; 394 } 395 } 396 397 if (i == AVDT_NUM_LINKS) 398 { 399 /* out of ccbs */ 400 p_ccb = NULL; 401 AVDT_TRACE_WARNING("Out of ccbs"); 402 } 403 return p_ccb; 404} 405 406/******************************************************************************* 407** 408** Function avdt_ccb_dealloc 409** 410** Description Deallocate a stream control block. 411** 412** 413** Returns void. 414** 415*******************************************************************************/ 416void avdt_ccb_dealloc(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data) 417{ 418 UNUSED(p_data); 419 420 AVDT_TRACE_DEBUG("avdt_ccb_dealloc %d", avdt_ccb_to_idx(p_ccb)); 421 alarm_free(p_ccb->idle_ccb_timer); 422 alarm_free(p_ccb->ret_ccb_timer); 423 alarm_free(p_ccb->rsp_ccb_timer); 424 fixed_queue_free(p_ccb->cmd_q, NULL); 425 fixed_queue_free(p_ccb->rsp_q, NULL); 426 memset(p_ccb, 0, sizeof(tAVDT_CCB)); 427} 428 429/******************************************************************************* 430** 431** Function avdt_ccb_to_idx 432** 433** Description Given a pointer to an ccb, return its index. 434** 435** 436** Returns Index of ccb. 437** 438*******************************************************************************/ 439UINT8 avdt_ccb_to_idx(tAVDT_CCB *p_ccb) 440{ 441 /* use array arithmetic to determine index */ 442 return (UINT8) (p_ccb - avdt_cb.ccb); 443} 444 445/******************************************************************************* 446** 447** Function avdt_ccb_by_idx 448** 449** Description Return ccb pointer based on ccb index. 450** 451** 452** Returns pointer to the ccb, or NULL if none found. 453** 454*******************************************************************************/ 455tAVDT_CCB *avdt_ccb_by_idx(UINT8 idx) 456{ 457 tAVDT_CCB *p_ccb; 458 459 /* verify index */ 460 if (idx < AVDT_NUM_LINKS) 461 { 462 p_ccb = &avdt_cb.ccb[idx]; 463 } 464 else 465 { 466 p_ccb = NULL; 467 AVDT_TRACE_WARNING("No ccb for idx %d", idx); 468 } 469 return p_ccb; 470} 471 472