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