1/******************************************************************************
2 *
3 *  Copyright (C) 2011-2014 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 is the main implementation file for the NFA_CE
23 *
24 ******************************************************************************/
25#include <string.h>
26#include "nfa_ce_api.h"
27#include "nfa_sys.h"
28#include "nfa_ce_int.h"
29#include "nfa_dm_int.h"
30#include "nfa_sys_int.h"
31
32/* NFA_CE control block */
33tNFA_CE_CB nfa_ce_cb;
34
35/*****************************************************************************
36** Constants and types
37*****************************************************************************/
38#define NFA_CE_DEFAULT_ISODEP_DISC_MASK (NFA_DM_DISC_MASK_LA_ISO_DEP | NFA_DM_DISC_MASK_LB_ISO_DEP)
39static void nfa_ce_proc_nfcc_power_mode (UINT8 nfcc_power_mode);
40
41static const tNFA_SYS_REG nfa_ce_sys_reg =
42{
43    NULL,
44    nfa_ce_hdl_event,
45    nfa_ce_sys_disable,
46    nfa_ce_proc_nfcc_power_mode
47};
48
49/* NFA_CE actions */
50const tNFA_CE_ACTION nfa_ce_action_tbl[] =
51{
52    nfa_ce_api_cfg_local_tag,   /* NFA_CE_API_CFG_LOCAL_TAG_EVT */
53    nfa_ce_api_reg_listen,      /* NFA_CE_API_REG_LISTEN_EVT    */
54    nfa_ce_api_dereg_listen,    /* NFA_CE_API_DEREG_LISTEN_EVT  */
55    nfa_ce_api_cfg_isodep_tech, /* NFA_CE_API_CFG_ISODEP_TECH_EVT*/
56    nfa_ce_activate_ntf,        /* NFA_CE_ACTIVATE_NTF_EVT      */
57    nfa_ce_deactivate_ntf,      /* NFA_CE_DEACTIVATE_NTF_EVT    */
58};
59#define NFA_CE_ACTION_TBL_SIZE  (sizeof (nfa_ce_action_tbl) / sizeof (tNFA_CE_ACTION))
60
61/*****************************************************************************
62** Local function prototypes
63*****************************************************************************/
64#if (BT_TRACE_VERBOSE == TRUE)
65static char *nfa_ce_evt_2_str (UINT16 event);
66#endif
67
68
69/*******************************************************************************
70**
71** Function         nfa_ce_init
72**
73** Description      Initialize NFA CE
74**
75** Returns          None
76**
77*******************************************************************************/
78void nfa_ce_init (void)
79{
80    NFA_TRACE_DEBUG0 ("nfa_ce_init ()");
81
82    /* initialize control block */
83    memset (&nfa_ce_cb, 0, sizeof (tNFA_CE_CB));
84
85    /* Generate a random NFCID for Type-3 NDEF emulation (Type-3 tag NFCID2 must start with 02:FE) */
86    nfa_ce_t3t_generate_rand_nfcid (nfa_ce_cb.listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].t3t_nfcid2);
87    nfa_ce_cb.listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle = NFA_HANDLE_INVALID;
88    nfa_ce_cb.isodep_disc_mask  = NFA_CE_DEFAULT_ISODEP_DISC_MASK;
89    nfa_ce_cb.idx_wild_card     = NFA_CE_LISTEN_INFO_IDX_INVALID;
90
91    /* register message handler on NFA SYS */
92    nfa_sys_register ( NFA_ID_CE,  &nfa_ce_sys_reg);
93}
94
95/*******************************************************************************
96**
97** Function         nfa_ce_sys_disable
98**
99** Description      Clean up ce sub-system
100**
101**
102** Returns          void
103**
104*******************************************************************************/
105void nfa_ce_sys_disable (void)
106{
107    tNFA_CE_LISTEN_INFO *p_info;
108    UINT8 xx;
109
110    NFC_SetStaticRfCback (NULL);
111
112    /* Free scratch buf if any */
113    nfa_ce_free_scratch_buf ();
114
115    /* Delete discovery handles */
116    for (xx = 0, p_info = nfa_ce_cb.listen_info; xx < NFA_CE_LISTEN_INFO_MAX; xx++, p_info++)
117    {
118        if ((p_info->flags & NFA_CE_LISTEN_INFO_IN_USE) && (p_info->rf_disc_handle != NFA_HANDLE_INVALID))
119        {
120            nfa_dm_delete_rf_discover (p_info->rf_disc_handle);
121            p_info->rf_disc_handle = NFA_HANDLE_INVALID;
122        }
123    }
124
125    nfa_sys_deregister (NFA_ID_CE);
126}
127
128/*******************************************************************************
129**
130** Function         nfa_ce_proc_nfcc_power_mode
131**
132** Description      Processing NFCC power mode changes
133**
134** Returns          None
135**
136*******************************************************************************/
137static void nfa_ce_proc_nfcc_power_mode (UINT8 nfcc_power_mode)
138{
139    tNFA_CE_CB *p_cb = &nfa_ce_cb;
140    UINT8 listen_info_idx;
141
142    NFA_TRACE_DEBUG1 ("nfa_ce_proc_nfcc_power_mode (): nfcc_power_mode=%d",
143                       nfcc_power_mode);
144
145    /* if NFCC power mode is change to full power */
146    if (nfcc_power_mode == NFA_DM_PWR_MODE_FULL)
147    {
148        nfa_ce_restart_listen_check ();
149    }
150    else
151    {
152        for (listen_info_idx=0; listen_info_idx<NFA_CE_LISTEN_INFO_IDX_INVALID; listen_info_idx++)
153        {
154            /* add RF discovery to DM only if it is not added yet */
155            if (  (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE)
156                &&(p_cb->listen_info[listen_info_idx].rf_disc_handle != NFA_HANDLE_INVALID))
157            {
158                nfa_dm_delete_rf_discover (p_cb->listen_info[listen_info_idx].rf_disc_handle);
159                p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
160            }
161        }
162    }
163
164    nfa_sys_cback_notify_nfcc_power_mode_proc_complete (NFA_ID_CE);
165}
166
167/*******************************************************************************
168**
169** Function         nfa_ce_hdl_event
170**
171** Description      nfa rw main event handling function.
172**
173** Returns          BOOLEAN
174**
175*******************************************************************************/
176BOOLEAN nfa_ce_hdl_event (BT_HDR *p_msg)
177{
178    UINT16 act_idx;
179    BOOLEAN freebuf = TRUE;
180
181#if (BT_TRACE_VERBOSE == TRUE)
182    NFA_TRACE_EVENT3 ("nfa_ce_handle_event event: %s (0x%02x), flags: %08x", nfa_ce_evt_2_str (p_msg->event), p_msg->event, nfa_ce_cb.flags);
183#else
184    NFA_TRACE_EVENT2 ("nfa_ce_handle_event event: 0x%x, flags: %08x",p_msg->event, nfa_ce_cb.flags);
185#endif
186
187    /* Get NFA_RW sub-event */
188    if ((act_idx = (p_msg->event & 0x00FF)) < NFA_CE_ACTION_TBL_SIZE)
189    {
190        freebuf = (*nfa_ce_action_tbl[act_idx]) ((tNFA_CE_MSG*) p_msg);
191    }
192
193    /* if vendor specific event handler is registered */
194    if (nfa_ce_cb.p_vs_evt_hdlr)
195    {
196        (*nfa_ce_cb.p_vs_evt_hdlr) (p_msg);
197    }
198
199    return freebuf;
200}
201
202#if (BT_TRACE_VERBOSE == TRUE)
203/*******************************************************************************
204**
205** Function         nfa_ce_evt_2_str
206**
207** Description      convert nfc evt to string
208**
209*******************************************************************************/
210static char *nfa_ce_evt_2_str (UINT16 event)
211{
212    switch (event)
213    {
214    case NFA_CE_API_CFG_LOCAL_TAG_EVT:
215        return "NFA_CE_API_CFG_LOCAL_TAG_EVT";
216
217    case NFA_CE_API_REG_LISTEN_EVT:
218        return "NFA_CE_API_REG_LISTEN_EVT";
219
220    case NFA_CE_API_DEREG_LISTEN_EVT:
221        return "NFA_CE_API_DEREG_LISTEN_EVT";
222
223    case NFA_CE_API_CFG_ISODEP_TECH_EVT:
224        return "NFA_CE_API_CFG_ISODEP_TECH_EVT";
225
226    case NFA_CE_ACTIVATE_NTF_EVT:
227        return "NFA_CE_ACTIVATE_NTF_EVT";
228
229    case NFA_CE_DEACTIVATE_NTF_EVT:
230        return "NFA_CE_DEACTIVATE_NTF_EVT";
231
232    default:
233        return "Unknown";
234    }
235}
236#endif /* BT_TRACE_VERBOSE */
237