1 /****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 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 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 "nfc_target.h" 27 #include "bt_types.h" 28 #include "nfc_api.h" 29 30 #if (NFC_INCLUDED == TRUE) 31 #include "nfc_int.h" 32 33 34 /******************************************************************************* 35 ** 36 ** Function nfc_alloc_conn_cb 37 ** 38 ** Description This function is called to allocation a control block for 39 ** NCI logical connection 40 ** 41 ** Returns The allocated control block or NULL 42 ** 43 *******************************************************************************/ 44 tNFC_CONN_CB * nfc_alloc_conn_cb (tNFC_CONN_CBACK *p_cback) 45 { 46 int xx, max = NCI_MAX_CONN_CBS; 47 tNFC_CONN_CB *p_conn_cb = NULL; 48 49 NFC_CHECK_MAX_CONN (); 50 for (xx = 0; xx < max; xx++) 51 { 52 if (nfc_cb.conn_cb[xx].conn_id == NFC_ILLEGAL_CONN_ID) 53 { 54 nfc_cb.conn_cb[xx].conn_id = NFC_PEND_CONN_ID; /* to indicate this cb is used */ 55 p_conn_cb = &nfc_cb.conn_cb[xx]; 56 p_conn_cb->p_cback = p_cback; 57 break; 58 } 59 } 60 return p_conn_cb; 61 } 62 63 /******************************************************************************* 64 ** 65 ** Function nfc_set_conn_id 66 ** 67 ** Description This function is called to set the connection id to the 68 ** connection control block and the id mapping table 69 ** 70 ** Returns void 71 ** 72 *******************************************************************************/ 73 void nfc_set_conn_id (tNFC_CONN_CB * p_cb, UINT8 conn_id) 74 { 75 UINT8 handle; 76 77 if (p_cb == NULL) 78 return; 79 80 p_cb->conn_id = conn_id; 81 handle = (UINT8) (p_cb - nfc_cb.conn_cb + 1); 82 nfc_cb.conn_id[conn_id] = handle; 83 NFC_TRACE_DEBUG2 ("nfc_set_conn_id conn_id:%d, handle:%d", conn_id, handle); 84 } 85 86 /******************************************************************************* 87 ** 88 ** Function nfc_find_conn_cb_by_handle 89 ** 90 ** Description This function is called to locate the control block for 91 ** loopback test. 92 ** 93 ** Returns The loopback test control block or NULL 94 ** 95 *******************************************************************************/ 96 tNFC_CONN_CB * nfc_find_conn_cb_by_handle (UINT8 id) 97 { 98 int xx; 99 tNFC_CONN_CB *p_conn_cb = NULL; 100 101 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) 102 { 103 if (nfc_cb.conn_cb[xx].id == id) 104 { 105 p_conn_cb = &nfc_cb.conn_cb[xx]; 106 break; 107 } 108 } 109 return p_conn_cb; 110 } 111 112 /******************************************************************************* 113 ** 114 ** Function nfc_find_conn_cb_by_conn_id 115 ** 116 ** Description This function is called to locate the control block for 117 ** the given connection id 118 ** 119 ** Returns The control block or NULL 120 ** 121 *******************************************************************************/ 122 tNFC_CONN_CB * nfc_find_conn_cb_by_conn_id (UINT8 conn_id) 123 { 124 tNFC_CONN_CB *p_conn_cb = NULL; 125 UINT8 handle; 126 UINT8 id; 127 int xx; 128 129 if (conn_id == NFC_PEND_CONN_ID) 130 { 131 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++) 132 { 133 if (nfc_cb.conn_cb[xx].conn_id == NFC_PEND_CONN_ID) 134 { 135 p_conn_cb = &nfc_cb.conn_cb[xx]; 136 break; 137 } 138 } 139 } 140 else 141 { 142 id = conn_id & NFC_CONN_ID_ID_MASK; 143 if (id < NFC_MAX_CONN_ID) 144 { 145 handle = nfc_cb.conn_id[id]; 146 if (handle > 0) 147 p_conn_cb = &nfc_cb.conn_cb[handle - 1]; 148 } 149 } 150 151 return p_conn_cb; 152 } 153 154 /******************************************************************************* 155 ** 156 ** Function nfc_free_conn_cb 157 ** 158 ** Description This function is called to free the control block and 159 ** resources and id mapping table 160 ** 161 ** Returns void 162 ** 163 *******************************************************************************/ 164 void nfc_free_conn_cb (tNFC_CONN_CB *p_cb) 165 { 166 void *p_buf; 167 168 if (p_cb == NULL) 169 return; 170 171 while ((p_buf = GKI_dequeue (&p_cb->rx_q)) != NULL) 172 GKI_freebuf (p_buf); 173 174 while ((p_buf = GKI_dequeue (&p_cb->tx_q)) != NULL) 175 GKI_freebuf (p_buf); 176 177 nfc_cb.conn_id[p_cb->conn_id] = 0; 178 p_cb->p_cback = NULL; 179 p_cb->conn_id = NFC_ILLEGAL_CONN_ID; 180 } 181 182 /******************************************************************************* 183 ** 184 ** Function nfc_reset_all_conn_cbs 185 ** 186 ** Description This function is called to free all the control blocks and 187 ** resources and id mapping table 188 ** 189 ** Returns void 190 ** 191 *******************************************************************************/ 192 NFC_API extern void nfc_reset_all_conn_cbs (void) 193 { 194 int xx; 195 tNFC_CONN_CB *p_conn_cb = &nfc_cb.conn_cb[0]; 196 tNFC_DEACTIVATE_DEVT deact; 197 198 deact.status = NFC_STATUS_NOT_INITIALIZED; 199 deact.type = NFC_DEACTIVATE_TYPE_IDLE; 200 deact.is_ntf = TRUE; 201 for (xx = 0; xx < NCI_MAX_CONN_CBS; xx++, p_conn_cb++) 202 { 203 if (p_conn_cb->conn_id != NFC_ILLEGAL_CONN_ID) 204 { 205 if (p_conn_cb->p_cback) 206 (*p_conn_cb->p_cback) (p_conn_cb->conn_id, NFC_DEACTIVATE_CEVT, (tNFC_CONN *) &deact); 207 nfc_free_conn_cb (p_conn_cb); 208 } 209 } 210 } 211 212 213 #endif /* NFC_INCLUDED == TRUE */ 214
