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 *
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 *******************************************************************************/
nfc_alloc_conn_cb(tNFC_CONN_CBACK * p_cback)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 *******************************************************************************/
nfc_set_conn_id(tNFC_CONN_CB * p_cb,UINT8 conn_id)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 *******************************************************************************/
nfc_find_conn_cb_by_handle(UINT8 id)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 *******************************************************************************/
nfc_find_conn_cb_by_conn_id(UINT8 conn_id)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 *******************************************************************************/
nfc_free_conn_cb(tNFC_CONN_CB * p_cb)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 *******************************************************************************/
nfc_reset_all_conn_cbs(void)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