nfa_rw_main.c revision 7c69b2723b60a59df4aaa58b13985b3483b291bf 
1/******************************************************************************
2 *
3 *  Copyright (C) 2003-2013 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 is the main implementation file for the NFA_RW
23 *
24 ******************************************************************************/
25#include <string.h>
26#include "nfa_rw_api.h"
27#include "nfa_sys.h"
28#include "nfa_rw_int.h"
29#include "nfa_dm_int.h"
30#include "nfa_sys_int.h"
31
32/* NFA_RW control block */
33tNFA_RW_CB nfa_rw_cb;
34
35/*****************************************************************************
36** Constants and types
37*****************************************************************************/
38static const tNFA_SYS_REG nfa_rw_sys_reg =
39{
40    NULL,
41    nfa_rw_handle_event,
42    nfa_rw_sys_disable,
43    NULL
44};
45
46/* NFA_RW actions */
47const tNFA_RW_ACTION nfa_rw_action_tbl[] =
48{
49    nfa_rw_handle_op_req,           /* NFA_RW_OP_REQUEST_EVT            */
50    nfa_rw_activate_ntf,            /* NFA_RW_ACTIVATE_NTF_EVT          */
51    nfa_rw_deactivate_ntf,          /* NFA_RW_DEACTIVATE_NTF_EVT        */
52    nfa_rw_presence_check_tick,     /* NFA_RW_PRESENCE_CHECK_TICK_EVT   */
53};
54
55
56/*****************************************************************************
57** Local function prototypes
58*****************************************************************************/
59#if (BT_TRACE_VERBOSE == TRUE)
60static char *nfa_rw_evt_2_str (UINT16 event);
61#endif
62
63/*******************************************************************************
64**
65** Function         nfa_rw_init
66**
67** Description      Initialize NFA RW
68**
69** Returns          None
70**
71*******************************************************************************/
72void nfa_rw_init (void)
73{
74    NFA_TRACE_DEBUG0 ("nfa_rw_init ()");
75
76    /* initialize control block */
77    memset (&nfa_rw_cb, 0, sizeof (tNFA_RW_CB));
78
79    /* register message handler on NFA SYS */
80    nfa_sys_register (NFA_ID_RW,  &nfa_rw_sys_reg);
81}
82
83/*******************************************************************************
84**
85** Function         nfa_rw_sys_disable
86**
87** Description      Clean up rw sub-system
88**
89**
90** Returns          void
91**
92*******************************************************************************/
93void nfa_rw_sys_disable (void)
94{
95    /* Return to idle */
96    NFC_SetStaticRfCback (NULL);
97
98    /* Stop presence check timer (if started) */
99    nfa_rw_stop_presence_check_timer ();
100
101    /* Free scratch buffer if any */
102    nfa_rw_free_ndef_rx_buf ();
103
104    /* Free pending command if any */
105    if (nfa_rw_cb.p_pending_msg)
106    {
107        GKI_freebuf (nfa_rw_cb.p_pending_msg);
108        nfa_rw_cb.p_pending_msg = NULL;
109    }
110
111    nfa_sys_deregister (NFA_ID_RW);
112}
113
114/*******************************************************************************
115**
116** Function         nfa_rw_proc_disc_evt
117**
118** Description      Called by nfa_dm to handle ACTIVATED/DEACTIVATED  events
119**
120** Returns          void
121**
122*******************************************************************************/
123void nfa_rw_proc_disc_evt (tNFA_DM_RF_DISC_EVT event, tNFC_DISCOVER *p_data, BOOLEAN excl_rf_not_active)
124{
125    tNFA_RW_MSG msg;
126
127    switch (event)
128    {
129    case NFA_DM_RF_DISC_ACTIVATED_EVT:
130        msg.hdr.event                       = NFA_RW_ACTIVATE_NTF_EVT;
131        msg.activate_ntf.p_activate_params  = &p_data->activate;
132        msg.activate_ntf.excl_rf_not_active = excl_rf_not_active;
133
134        nfa_rw_handle_event ((BT_HDR *) &msg);
135        break;
136
137    case NFA_DM_RF_DISC_DEACTIVATED_EVT:
138        msg.hdr.event = NFA_RW_DEACTIVATE_NTF_EVT;
139
140        nfa_rw_handle_event ((BT_HDR *) &msg);
141        break;
142
143    default:
144        break;
145    }
146}
147
148/*******************************************************************************
149**
150** Function         nfa_rw_send_raw_frame
151**
152** Description      Called by nfa_dm to send raw frame
153**
154** Returns          tNFA_STATUS
155**
156*******************************************************************************/
157tNFA_STATUS nfa_rw_send_raw_frame (BT_HDR *p_data)
158{
159    tNFA_RW_MSG *p_msg;
160
161    if ((p_msg = (tNFA_RW_MSG *) GKI_getbuf ((UINT16) sizeof(tNFA_RW_MSG))) != NULL)
162    {
163        p_msg->hdr.event = NFA_RW_OP_REQUEST_EVT;
164        p_msg->op_req.op = NFA_RW_OP_SEND_RAW_FRAME;
165
166        p_msg->op_req.params.send_raw_frame.p_data = p_data;
167
168        if (nfa_rw_handle_event ((BT_HDR *) p_msg))
169            GKI_freebuf (p_msg);
170
171        return (NFA_STATUS_OK);
172    }
173    return NFA_STATUS_FAILED;
174}
175
176/*******************************************************************************
177**
178** Function         nfa_rw_handle_event
179**
180** Description      nfa rw main event handling function.
181**
182** Returns          TRUE if caller should free p_msg buffer
183**
184*******************************************************************************/
185BOOLEAN nfa_rw_handle_event(BT_HDR *p_msg)
186{
187    UINT16 act_idx;
188
189#if (BT_TRACE_VERBOSE == TRUE)
190    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);
191#else
192    NFA_TRACE_EVENT2 ("nfa_rw_handle_event event: 0x%x, flags: %08x",p_msg->event, nfa_rw_cb.flags);
193#endif
194
195    /* Get NFA_RW sub-event */
196    if ((act_idx = (p_msg->event & 0x00FF)) < (NFA_RW_MAX_EVT & 0xFF))
197    {
198        return (*nfa_rw_action_tbl[act_idx]) ( (tNFA_RW_MSG*) p_msg);
199    }
200    else
201    {
202        NFA_TRACE_ERROR1 ("nfa_rw_handle_event: unhandled event 0x%02X", p_msg->event);
203        return TRUE;
204    }
205}
206
207
208#if (BT_TRACE_VERBOSE == TRUE)
209/*******************************************************************************
210**
211** Function         nfa_rw_evt_2_str
212**
213** Description      convert nfa_rw evt to string
214**
215*******************************************************************************/
216static char *nfa_rw_evt_2_str (UINT16 event)
217{
218    switch (event)
219    {
220    case NFA_RW_OP_REQUEST_EVT:
221        return "NFA_RW_OP_REQUEST_EVT";
222
223    case NFA_RW_ACTIVATE_NTF_EVT:
224        return "NFA_RW_ACTIVATE_NTF_EVT";
225
226    case NFA_RW_DEACTIVATE_NTF_EVT:
227        return "NFA_RW_DEACTIVATE_NTF_EVT";
228
229    case NFA_RW_PRESENCE_CHECK_TICK_EVT:
230        return "NFA_RW_PRESENCE_CHECK_TICK_EVT";
231
232    default:
233        return "Unknown";
234    }
235}
236#endif /* BT_TRACE_VERBOSE */
237