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 *******************************************************************************/
nfc_alloc_conn_cb(tNFC_CONN_CBACK * p_cback)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 *******************************************************************************/
nfc_set_conn_id(tNFC_CONN_CB * p_cb,uint8_t conn_id)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 *******************************************************************************/
nfc_find_conn_cb_by_handle(uint8_t id)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 *******************************************************************************/
nfc_find_conn_cb_by_conn_id(uint8_t conn_id)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 *******************************************************************************/
nfc_free_conn_cb(tNFC_CONN_CB * p_cb)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 *******************************************************************************/
nfc_reset_all_conn_cbs(void)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