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