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 * This is the main implementation file for the NFA_CE
22 *
23 ******************************************************************************/
24 #include <string>
25
26 #include <android-base/stringprintf.h>
27 #include <base/logging.h>
28
29 #include "nfa_ce_api.h"
30 #include "nfa_ce_int.h"
31
32 using android::base::StringPrintf;
33
34 extern bool nfc_debug_enabled;
35
36 /* NFA_CE control block */
37 tNFA_CE_CB nfa_ce_cb;
38
39 /*****************************************************************************
40 ** Constants and types
41 *****************************************************************************/
42 #define NFA_CE_DEFAULT_ISODEP_DISC_MASK \
43 (NFA_DM_DISC_MASK_LA_ISO_DEP | NFA_DM_DISC_MASK_LB_ISO_DEP)
44 static void nfa_ce_proc_nfcc_power_mode(uint8_t nfcc_power_mode);
45
46 static const tNFA_SYS_REG nfa_ce_sys_reg = {
47 nullptr, nfa_ce_hdl_event, nfa_ce_sys_disable, nfa_ce_proc_nfcc_power_mode};
48
49 /* NFA_CE actions */
50 const tNFA_CE_ACTION nfa_ce_action_tbl[] = {
51 nfa_ce_api_cfg_local_tag, /* NFA_CE_API_CFG_LOCAL_TAG_EVT */
52 nfa_ce_api_reg_listen, /* NFA_CE_API_REG_LISTEN_EVT */
53 nfa_ce_api_dereg_listen, /* NFA_CE_API_DEREG_LISTEN_EVT */
54 nfa_ce_api_cfg_isodep_tech, /* NFA_CE_API_CFG_ISODEP_TECH_EVT*/
55 nfa_ce_activate_ntf, /* NFA_CE_ACTIVATE_NTF_EVT */
56 nfa_ce_deactivate_ntf, /* NFA_CE_DEACTIVATE_NTF_EVT */
57 };
58 #define NFA_CE_ACTION_TBL_SIZE \
59 (sizeof(nfa_ce_action_tbl) / sizeof(tNFA_CE_ACTION))
60
61 /*****************************************************************************
62 ** Local function prototypes
63 *****************************************************************************/
64 static std::string nfa_ce_evt_2_str(uint16_t event);
65
66 /*******************************************************************************
67 **
68 ** Function nfa_ce_init
69 **
70 ** Description Initialize NFA CE
71 **
72 ** Returns None
73 **
74 *******************************************************************************/
nfa_ce_init(void)75 void nfa_ce_init(void) {
76 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
77
78 /* initialize control block */
79 memset(&nfa_ce_cb, 0, sizeof(tNFA_CE_CB));
80
81 /* Generate a random NFCID for Type-3 NDEF emulation (Type-3 tag NFCID2 must
82 * start with 02:FE) */
83 nfa_ce_t3t_generate_rand_nfcid(
84 nfa_ce_cb.listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].t3t_nfcid2);
85 nfa_ce_cb.listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle =
86 NFA_HANDLE_INVALID;
87 nfa_ce_cb.isodep_disc_mask = NFA_CE_DEFAULT_ISODEP_DISC_MASK;
88 nfa_ce_cb.idx_wild_card = NFA_CE_LISTEN_INFO_IDX_INVALID;
89
90 /* register message handler on NFA SYS */
91 nfa_sys_register(NFA_ID_CE, &nfa_ce_sys_reg);
92 }
93
94 /*******************************************************************************
95 **
96 ** Function nfa_ce_sys_disable
97 **
98 ** Description Clean up ce sub-system
99 **
100 **
101 ** Returns void
102 **
103 *******************************************************************************/
nfa_ce_sys_disable(void)104 void nfa_ce_sys_disable(void) {
105 tNFA_CE_LISTEN_INFO* p_info;
106 uint8_t xx;
107
108 NFC_SetStaticRfCback(nullptr);
109
110 /* Free scratch buf if any */
111 nfa_ce_free_scratch_buf();
112
113 /* Delete discovery handles */
114 for (xx = 0, p_info = nfa_ce_cb.listen_info; xx < NFA_CE_LISTEN_INFO_MAX;
115 xx++, p_info++) {
116 if ((p_info->flags & NFA_CE_LISTEN_INFO_IN_USE) &&
117 (p_info->rf_disc_handle != NFA_HANDLE_INVALID)) {
118 nfa_dm_delete_rf_discover(p_info->rf_disc_handle);
119 p_info->rf_disc_handle = NFA_HANDLE_INVALID;
120 }
121 }
122
123 nfa_sys_deregister(NFA_ID_CE);
124 }
125
126 /*******************************************************************************
127 **
128 ** Function nfa_ce_proc_nfcc_power_mode
129 **
130 ** Description Processing NFCC power mode changes
131 **
132 ** Returns None
133 **
134 *******************************************************************************/
nfa_ce_proc_nfcc_power_mode(uint8_t nfcc_power_mode)135 static void nfa_ce_proc_nfcc_power_mode(uint8_t nfcc_power_mode) {
136 tNFA_CE_CB* p_cb = &nfa_ce_cb;
137 uint8_t listen_info_idx;
138
139 DLOG_IF(INFO, nfc_debug_enabled)
140 << StringPrintf("nfcc_power_mode=%d", nfcc_power_mode);
141
142 /* if NFCC power mode is change to full power */
143 if (nfcc_power_mode == NFA_DM_PWR_MODE_FULL) {
144 nfa_ce_restart_listen_check();
145 } else {
146 for (listen_info_idx = 0; listen_info_idx < NFA_CE_LISTEN_INFO_IDX_INVALID;
147 listen_info_idx++) {
148 /* add RF discovery to DM only if it is not added yet */
149 if ((p_cb->listen_info[listen_info_idx].flags &
150 NFA_CE_LISTEN_INFO_IN_USE) &&
151 (p_cb->listen_info[listen_info_idx].rf_disc_handle !=
152 NFA_HANDLE_INVALID)) {
153 nfa_dm_delete_rf_discover(
154 p_cb->listen_info[listen_info_idx].rf_disc_handle);
155 p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
156 }
157 }
158 }
159
160 nfa_sys_cback_notify_nfcc_power_mode_proc_complete(NFA_ID_CE);
161 }
162
163 /*******************************************************************************
164 **
165 ** Function nfa_ce_hdl_event
166 **
167 ** Description nfa rw main event handling function.
168 **
169 ** Returns bool
170 **
171 *******************************************************************************/
nfa_ce_hdl_event(NFC_HDR * p_msg)172 bool nfa_ce_hdl_event(NFC_HDR* p_msg) {
173 uint16_t act_idx;
174 bool freebuf = true;
175
176 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
177 "nfa_ce_handle_event event: %s (0x%02x), flags: %08x",
178 nfa_ce_evt_2_str(p_msg->event).c_str(), p_msg->event, nfa_ce_cb.flags);
179
180 /* Get NFA_RW sub-event */
181 act_idx = (p_msg->event & 0x00FF);
182 if (act_idx < NFA_CE_ACTION_TBL_SIZE) {
183 freebuf = (*nfa_ce_action_tbl[act_idx])((tNFA_CE_MSG*)p_msg);
184 }
185
186 /* if vendor specific event handler is registered */
187 if (nfa_ce_cb.p_vs_evt_hdlr) {
188 (*nfa_ce_cb.p_vs_evt_hdlr)(p_msg);
189 }
190
191 return freebuf;
192 }
193
194 /*******************************************************************************
195 **
196 ** Function nfa_ce_evt_2_str
197 **
198 ** Description convert nfc evt to string
199 **
200 *******************************************************************************/
nfa_ce_evt_2_str(uint16_t event)201 static std::string nfa_ce_evt_2_str(uint16_t event) {
202 switch (event) {
203 case NFA_CE_API_CFG_LOCAL_TAG_EVT:
204 return "NFA_CE_API_CFG_LOCAL_TAG_EVT";
205 case NFA_CE_API_REG_LISTEN_EVT:
206 return "NFA_CE_API_REG_LISTEN_EVT";
207 case NFA_CE_API_DEREG_LISTEN_EVT:
208 return "NFA_CE_API_DEREG_LISTEN_EVT";
209 case NFA_CE_API_CFG_ISODEP_TECH_EVT:
210 return "NFA_CE_API_CFG_ISODEP_TECH_EVT";
211 case NFA_CE_ACTIVATE_NTF_EVT:
212 return "NFA_CE_ACTIVATE_NTF_EVT";
213 case NFA_CE_DEACTIVATE_NTF_EVT:
214 return "NFA_CE_DEACTIVATE_NTF_EVT";
215 default:
216 return "Unknown";
217 }
218 }
219