1 /****************************************************************************** 2 * 3 * Copyright (C) 1999-2014 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 functions that interface with the NFC NCI transport. 22 * On the receive side, it routes events to the appropriate handler 23 * (callback). On the transmit side, it manages the command transmission. 24 * 25 ******************************************************************************/ 26 #include "bt_types.h" 27 #include "nfc_api.h" 28 #include "nfc_target.h" 29 30 #include "nfc_int.h" 31 32 /******************************************************************************* 33 ** 34 ** Function nfc_alloc_conn_cb 35 ** 36 ** Description This function is called to allocation a control block for 37 ** NCI logical connection 38 ** 39 ** Returns The allocated control block or NULL 40 ** 41 *******************************************************************************/ 42 tNFC_CONN_CB* nfc_alloc_conn_cb(tNFC_CONN_CBACK* p_cback) { 43 int xx, max = NCI_MAX_CONN_CBS; 44 tNFC_CONN_CB* p_conn_cb = NULL; 45 46 NFC_CHECK_MAX_CONN(); 47 for (xx = 0; xx < max; xx++) { 48 if (nfc_cb.conn_cb[xx].conn_id == NFC_ILLEGAL_CONN_ID) { 49 nfc_cb.conn_cb[xx].conn_id = 50 NFC_PEND_CONN_ID; /* to indicate this cb is used */ 51 p_conn_cb = &nfc_cb.conn_cb[xx]; 52 p_conn_cb->p_cback = p_cback; 53 break; 54 } 55 } 56 return p_conn_cb; 57 } 58 59 /******************************************************************************* 60 ** 61 ** Function nfc_set_conn_id 62 ** 63 ** Description This function is called to set the connection id to the 64 ** connection control block and the id mapping table 65 ** 66 ** Returns void 67 ** 68 *******************************************************************************/ 69 void nfc_set_conn_id(tNFC_CONN_CB* p_cb, uint8_t conn_id) { 70 uint8_t handle; 71 72 if (p_cb == NULL) return; 73 74 p_cb->conn_id = conn_id; 75 handle = (uint8_t)(p_cb - nfc_cb.conn_cb + 1); 76 nfc_cb.conn_id[conn_id] = handle; 77 NFC_TRACE_DEBUG2("nfc_set_conn_id conn_id:%d, handle:%d", conn_id, handle); 78 } 79 80 /******************************************************************************* 81 ** 82 ** Function nfc_find_conn_cb_by_handle 83 ** 84 ** Description This function is called to locate the control block for 85 ** loopback test. 86 ** 87 ** Returns The loopback test control block or NULL 88 ** 89 *******************************************************************************/ 90 tNFC_CONN_CB* nfc_find_conn_cb_by_handle(uint8_t id) { 91 int xx; 92 tNFC_CONN_CB* p_conn_cb = NULL; 93 94 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) { 95 if (nfc_cb.conn_cb[xx].id == id) { 96 p_conn_cb = &nfc_cb.conn_cb[xx]; 97 break; 98 } 99 } 100 return p_conn_cb; 101 } 102 103 /******************************************************************************* 104 ** 105 ** Function nfc_find_conn_cb_by_conn_id 106 ** 107 ** Description This function is called to locate the control block for 108 ** the given connection id 109 ** 110 ** Returns The control block or NULL 111 ** 112 *******************************************************************************/ 113 tNFC_CONN_CB* nfc_find_conn_cb_by_conn_id(uint8_t conn_id) { 114 tNFC_CONN_CB* p_conn_cb = NULL; 115 uint8_t handle; 116 uint8_t id; 117 int xx; 118 119 if (conn_id == NFC_PEND_CONN_ID) { 120 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) { 121 if (nfc_cb.conn_cb[xx].conn_id == NFC_PEND_CONN_ID) { 122 p_conn_cb = &nfc_cb.conn_cb[xx]; 123 break; 124 } 125 } 126 } else { 127 id = conn_id & NFC_CONN_ID_ID_MASK; 128 if (id < NFC_MAX_CONN_ID) { 129 handle = nfc_cb.conn_id[id]; 130 if (handle > 0) p_conn_cb = &nfc_cb.conn_cb[handle - 1]; 131 } 132 } 133 134 return p_conn_cb; 135 } 136 137 /******************************************************************************* 138 ** 139 ** Function nfc_free_conn_cb 140 ** 141 ** Description This function is called to free the control block and 142 ** resources and id mapping table 143 ** 144 ** Returns void 145 ** 146 *******************************************************************************/ 147 void nfc_free_conn_cb(tNFC_CONN_CB* p_cb) { 148 void* p_buf; 149 150 if (p_cb == NULL) return; 151 152 while ((p_buf = GKI_dequeue(&p_cb->rx_q)) != NULL) GKI_freebuf(p_buf); 153 154 while ((p_buf = GKI_dequeue(&p_cb->tx_q)) != NULL) GKI_freebuf(p_buf); 155 156 nfc_cb.conn_id[p_cb->conn_id] = 0; 157 p_cb->p_cback = NULL; 158 p_cb->conn_id = NFC_ILLEGAL_CONN_ID; 159 } 160 161 /******************************************************************************* 162 ** 163 ** Function nfc_reset_all_conn_cbs 164 ** 165 ** Description This function is called to free all the control blocks and 166 ** resources and id mapping table 167 ** 168 ** Returns void 169 ** 170 *******************************************************************************/ 171 extern void nfc_reset_all_conn_cbs(void) { 172 int xx; 173 tNFC_CONN_CB* p_conn_cb = &nfc_cb.conn_cb[0]; 174 tNFC_DEACTIVATE_DEVT deact; 175 176 deact.status = NFC_STATUS_NOT_INITIALIZED; 177 deact.type = NFC_DEACTIVATE_TYPE_IDLE; 178 deact.is_ntf = TRUE; 179 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++, p_conn_cb++) { 180 if (p_conn_cb->conn_id != NFC_ILLEGAL_CONN_ID) { 181 if (p_conn_cb->p_cback) 182 (*p_conn_cb->p_cback)(p_conn_cb->conn_id, NFC_DEACTIVATE_CEVT, 183 (tNFC_CONN*)&deact); 184 nfc_free_conn_cb(p_conn_cb); 185 } 186 } 187 } 188
