1 /****************************************************************************** 2 * 3 * Copyright (C) 1999-2013 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 * 22 * This file contains functions that interface with the NFC NCI transport. 23 * On the receive side, it routes events to the appropriate handler 24 * (callback). On the transmit side, it manages the command transmission. 25 * 26 ******************************************************************************/ 27 #include "nfc_target.h" 28 #include "bt_types.h" 29 #include "nfc_api.h" 30 31 #if (NFC_INCLUDED == TRUE) 32 #include "nfc_int.h" 33 34 35 /******************************************************************************* 36 ** 37 ** Function nfc_alloc_conn_cb 38 ** 39 ** Description This function is called to allocation a control block for 40 ** NCI logical connection 41 ** 42 ** Returns The allocated control block or NULL 43 ** 44 *******************************************************************************/ 45 tNFC_CONN_CB * nfc_alloc_conn_cb (tNFC_CONN_CBACK *p_cback) 46 { 47 int xx, max = NCI_MAX_CONN_CBS; 48 tNFC_CONN_CB *p_conn_cb = NULL; 49 50 NFC_CHECK_MAX_CONN (); 51 for (xx = 0; xx < max; xx++) 52 { 53 if (nfc_cb.conn_cb[xx].conn_id == NFC_ILLEGAL_CONN_ID) 54 { 55 nfc_cb.conn_cb[xx].conn_id = NFC_PEND_CONN_ID; /* to indicate this cb is used */ 56 p_conn_cb = &nfc_cb.conn_cb[xx]; 57 p_conn_cb->p_cback = p_cback; 58 break; 59 } 60 } 61 return p_conn_cb; 62 } 63 64 /******************************************************************************* 65 ** 66 ** Function nfc_set_conn_id 67 ** 68 ** Description This function is called to set the connection id to the 69 ** connection control block and the id mapping table 70 ** 71 ** Returns void 72 ** 73 *******************************************************************************/ 74 void nfc_set_conn_id (tNFC_CONN_CB * p_cb, UINT8 conn_id) 75 { 76 UINT8 handle; 77 78 if (p_cb == NULL) 79 return; 80 81 p_cb->conn_id = conn_id; 82 handle = (UINT8) (p_cb - nfc_cb.conn_cb + 1); 83 nfc_cb.conn_id[conn_id] = handle; 84 NFC_TRACE_DEBUG2 ("nfc_set_conn_id conn_id:%d, handle:%d", conn_id, handle); 85 } 86 87 /******************************************************************************* 88 ** 89 ** Function nfc_find_conn_cb_by_handle 90 ** 91 ** Description This function is called to locate the control block for 92 ** loopback test. 93 ** 94 ** Returns The loopback test control block or NULL 95 ** 96 *******************************************************************************/ 97 tNFC_CONN_CB * nfc_find_conn_cb_by_handle (UINT8 id) 98 { 99 int xx; 100 tNFC_CONN_CB *p_conn_cb = NULL; 101 102 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) 103 { 104 if (nfc_cb.conn_cb[xx].id == id) 105 { 106 p_conn_cb = &nfc_cb.conn_cb[xx]; 107 break; 108 } 109 } 110 return p_conn_cb; 111 } 112 113 /******************************************************************************* 114 ** 115 ** Function nfc_find_conn_cb_by_conn_id 116 ** 117 ** Description This function is called to locate the control block for 118 ** the given connection id 119 ** 120 ** Returns The control block or NULL 121 ** 122 *******************************************************************************/ 123 tNFC_CONN_CB * nfc_find_conn_cb_by_conn_id (UINT8 conn_id) 124 { 125 tNFC_CONN_CB *p_conn_cb = NULL; 126 UINT8 handle; 127 UINT8 id; 128 int xx; 129 130 if (conn_id == NFC_PEND_CONN_ID) 131 { 132 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) 133 { 134 if (nfc_cb.conn_cb[xx].conn_id == NFC_PEND_CONN_ID) 135 { 136 p_conn_cb = &nfc_cb.conn_cb[xx]; 137 break; 138 } 139 } 140 } 141 else 142 { 143 id = conn_id & NFC_CONN_ID_ID_MASK; 144 if (id < NFC_MAX_CONN_ID) 145 { 146 handle = nfc_cb.conn_id[id]; 147 if (handle > 0) 148 p_conn_cb = &nfc_cb.conn_cb[handle - 1]; 149 } 150 } 151 152 return p_conn_cb; 153 } 154 155 /******************************************************************************* 156 ** 157 ** Function nfc_free_conn_cb 158 ** 159 ** Description This function is called to free the control block and 160 ** resources and id mapping table 161 ** 162 ** Returns void 163 ** 164 *******************************************************************************/ 165 void nfc_free_conn_cb (tNFC_CONN_CB *p_cb) 166 { 167 void *p_buf; 168 169 if (p_cb == NULL) 170 return; 171 172 while ((p_buf = GKI_dequeue (&p_cb->rx_q)) != NULL) 173 GKI_freebuf (p_buf); 174 175 while ((p_buf = GKI_dequeue (&p_cb->tx_q)) != NULL) 176 GKI_freebuf (p_buf); 177 178 nfc_cb.conn_id[p_cb->conn_id] = 0; 179 p_cb->p_cback = NULL; 180 p_cb->conn_id = NFC_ILLEGAL_CONN_ID; 181 } 182 183 /******************************************************************************* 184 ** 185 ** Function nfc_reset_all_conn_cbs 186 ** 187 ** Description This function is called to free all the control blocks and 188 ** resources and id mapping table 189 ** 190 ** Returns void 191 ** 192 *******************************************************************************/ 193 NFC_API extern void nfc_reset_all_conn_cbs (void) 194 { 195 int xx; 196 tNFC_CONN_CB *p_conn_cb = &nfc_cb.conn_cb[0]; 197 tNFC_DEACTIVATE_DEVT deact; 198 199 deact.status = NFC_STATUS_NOT_INITIALIZED; 200 deact.type = NFC_DEACTIVATE_TYPE_IDLE; 201 deact.is_ntf = TRUE; 202 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++, p_conn_cb++) 203 { 204 if (p_conn_cb->conn_id != NFC_ILLEGAL_CONN_ID) 205 { 206 if (p_conn_cb->p_cback) 207 (*p_conn_cb->p_cback) (p_conn_cb->conn_id, NFC_DEACTIVATE_CEVT, (tNFC_CONN *) &deact); 208 nfc_free_conn_cb (p_conn_cb); 209 } 210 } 211 } 212 213 214 #endif /* NFC_INCLUDED == TRUE */ 215
