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1 /******************************************************************************
2  *
3  *  Copyright (C) 2003-2012 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 is the main implementation file for the NFA_RW
22  *
23  ******************************************************************************/
24 #include <string.h>
25 #include "nfa_rw_api.h"
26 #include "nfa_sys.h"
27 #include "nfa_rw_int.h"
28 #include "nfa_dm_int.h"
29 #include "nfa_sys_int.h"
30 
31 /* NFA_RW control block */
32 tNFA_RW_CB nfa_rw_cb;
33 
34 /*****************************************************************************
35 ** Constants and types
36 *****************************************************************************/
37 static const tNFA_SYS_REG nfa_rw_sys_reg =
38 {
39     NULL,
40     nfa_rw_handle_event,
41     nfa_rw_sys_disable,
42     NULL
43 };
44 
45 /* NFA_RW actions */
46 const tNFA_RW_ACTION nfa_rw_action_tbl[] =
47 {
48     nfa_rw_handle_op_req,           /* NFA_RW_OP_REQUEST_EVT            */
49     nfa_rw_activate_ntf,            /* NFA_RW_ACTIVATE_NTF_EVT          */
50     nfa_rw_deactivate_ntf,          /* NFA_RW_DEACTIVATE_NTF_EVT        */
51     nfa_rw_presence_check_tick,     /* NFA_RW_PRESENCE_CHECK_TICK_EVT   */
52 };
53 
54 
55 /*****************************************************************************
56 ** Local function prototypes
57 *****************************************************************************/
58 #if (BT_TRACE_VERBOSE == TRUE)
59 static char *nfa_rw_evt_2_str (UINT16 event);
60 #endif
61 
62 /*******************************************************************************
63 **
64 ** Function         nfa_rw_init
65 **
66 ** Description      Initialize NFA RW
67 **
68 ** Returns          None
69 **
70 *******************************************************************************/
nfa_rw_init(void)71 void nfa_rw_init (void)
72 {
73     NFA_TRACE_DEBUG0 ("nfa_rw_init ()");
74 
75     /* initialize control block */
76     memset (&nfa_rw_cb, 0, sizeof (tNFA_RW_CB));
77 
78     /* register message handler on NFA SYS */
79     nfa_sys_register (NFA_ID_RW,  &nfa_rw_sys_reg);
80 }
81 
82 /*******************************************************************************
83 **
84 ** Function         nfa_rw_sys_disable
85 **
86 ** Description      Clean up rw sub-system
87 **
88 **
89 ** Returns          void
90 **
91 *******************************************************************************/
nfa_rw_sys_disable(void)92 void nfa_rw_sys_disable (void)
93 {
94     /* Return to idle */
95     NFC_SetStaticRfCback (NULL);
96 
97     /* Stop presence check timer (if started) */
98     nfa_rw_stop_presence_check_timer ();
99 
100     /* Free scratch buffer if any */
101     nfa_rw_free_ndef_rx_buf ();
102 
103     /* Free pending command if any */
104     if (nfa_rw_cb.p_pending_msg)
105     {
106         GKI_freebuf (nfa_rw_cb.p_pending_msg);
107         nfa_rw_cb.p_pending_msg = NULL;
108     }
109 
110     nfa_sys_deregister (NFA_ID_RW);
111 }
112 
113 /*******************************************************************************
114 **
115 ** Function         nfa_rw_proc_disc_evt
116 **
117 ** Description      Called by nfa_dm to handle ACTIVATED/DEACTIVATED  events
118 **
119 ** Returns          void
120 **
121 *******************************************************************************/
nfa_rw_proc_disc_evt(tNFA_DM_RF_DISC_EVT event,tNFC_DISCOVER * p_data,BOOLEAN excl_rf_not_active)122 void nfa_rw_proc_disc_evt (tNFA_DM_RF_DISC_EVT event, tNFC_DISCOVER *p_data, BOOLEAN excl_rf_not_active)
123 {
124     tNFA_RW_MSG msg;
125 
126     switch (event)
127     {
128     case NFA_DM_RF_DISC_ACTIVATED_EVT:
129         msg.hdr.event                       = NFA_RW_ACTIVATE_NTF_EVT;
130         msg.activate_ntf.p_activate_params  = &p_data->activate;
131         msg.activate_ntf.excl_rf_not_active = excl_rf_not_active;
132 
133         nfa_rw_handle_event ((BT_HDR *) &msg);
134         break;
135 
136     case NFA_DM_RF_DISC_DEACTIVATED_EVT:
137         msg.hdr.event = NFA_RW_DEACTIVATE_NTF_EVT;
138 
139         nfa_rw_handle_event ((BT_HDR *) &msg);
140         break;
141 
142     default:
143         break;
144     }
145 }
146 
147 /*******************************************************************************
148 **
149 ** Function         nfa_rw_send_raw_frame
150 **
151 ** Description      Called by nfa_dm to send raw frame
152 **
153 ** Returns          tNFA_STATUS
154 **
155 *******************************************************************************/
nfa_rw_send_raw_frame(BT_HDR * p_data)156 tNFA_STATUS nfa_rw_send_raw_frame (BT_HDR *p_data)
157 {
158     tNFA_RW_MSG msg;
159 
160     msg.hdr.event       = NFA_RW_OP_REQUEST_EVT;
161     msg.op_req.op = NFA_RW_OP_SEND_RAW_FRAME;
162 
163     msg.op_req.params.send_raw_frame.p_data = p_data;
164 
165     nfa_rw_handle_event ((BT_HDR *) &msg);
166     return (NFA_STATUS_OK);
167 }
168 
169 /*******************************************************************************
170 **
171 ** Function         nfa_rw_handle_event
172 **
173 ** Description      nfa rw main event handling function.
174 **
175 ** Returns          TRUE if caller should free p_msg buffer
176 **
177 *******************************************************************************/
nfa_rw_handle_event(BT_HDR * p_msg)178 BOOLEAN nfa_rw_handle_event(BT_HDR *p_msg)
179 {
180     UINT16 act_idx;
181 
182 #if (BT_TRACE_VERBOSE == TRUE)
183     NFA_TRACE_EVENT3 ("nfa_rw_handle_event event: %s (0x%02x), flags: %08x", nfa_rw_evt_2_str (p_msg->event), p_msg->event, nfa_rw_cb.flags);
184 #else
185     NFA_TRACE_EVENT2 ("nfa_rw_handle_event event: 0x%x, flags: %08x",p_msg->event, nfa_rw_cb.flags);
186 #endif
187 
188     /* Get NFA_RW sub-event */
189     if ((act_idx = (p_msg->event & 0x00FF)) < (NFA_RW_MAX_EVT & 0xFF))
190     {
191         return (*nfa_rw_action_tbl[act_idx]) ( (tNFA_RW_MSG*) p_msg);
192     }
193     else
194     {
195         NFA_TRACE_ERROR1 ("nfa_rw_handle_event: unhandled event 0x%02X", p_msg->event);
196         return TRUE;
197     }
198 }
199 
200 
201 #if (BT_TRACE_VERBOSE == TRUE)
202 /*******************************************************************************
203 **
204 ** Function         nfa_rw_evt_2_str
205 **
206 ** Description      convert nfa_rw evt to string
207 **
208 *******************************************************************************/
nfa_rw_evt_2_str(UINT16 event)209 static char *nfa_rw_evt_2_str (UINT16 event)
210 {
211     switch (event)
212     {
213     case NFA_RW_OP_REQUEST_EVT:
214         return "NFA_RW_OP_REQUEST_EVT";
215 
216     case NFA_RW_ACTIVATE_NTF_EVT:
217         return "NFA_RW_ACTIVATE_NTF_EVT";
218 
219     case NFA_RW_DEACTIVATE_NTF_EVT:
220         return "NFA_RW_DEACTIVATE_NTF_EVT";
221 
222     case NFA_RW_PRESENCE_CHECK_TICK_EVT:
223         return "NFA_RW_PRESENCE_CHECK_TICK_EVT";
224 
225     default:
226         return "Unknown";
227     }
228 }
229 #endif /* BT_TRACE_VERBOSE */
230