1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2011 Instituto Nokia de Tecnologia
4 *
5 * Authors:
6 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
7 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
8 */
9
10 #ifndef __LOCAL_NFC_H
11 #define __LOCAL_NFC_H
12
13 #include <net/nfc/nfc.h>
14 #include <net/sock.h>
15
16 #define NFC_TARGET_MODE_IDLE 0
17 #define NFC_TARGET_MODE_SLEEP 1
18
19 struct nfc_protocol {
20 int id;
21 struct proto *proto;
22 struct module *owner;
23 int (*create)(struct net *net, struct socket *sock,
24 const struct nfc_protocol *nfc_proto, int kern);
25 };
26
27 struct nfc_rawsock {
28 struct sock sk;
29 struct nfc_dev *dev;
30 u32 target_idx;
31 struct work_struct tx_work;
32 bool tx_work_scheduled;
33 };
34
35 struct nfc_sock_list {
36 struct hlist_head head;
37 rwlock_t lock;
38 };
39
40 #define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
41 #define to_rawsock_sk(_tx_work) \
42 ((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
43
44 struct nfc_llcp_sdp_tlv;
45
46 void nfc_llcp_mac_is_down(struct nfc_dev *dev);
47 void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
48 u8 comm_mode, u8 rf_mode);
49 int nfc_llcp_register_device(struct nfc_dev *dev);
50 void nfc_llcp_unregister_device(struct nfc_dev *dev);
51 int nfc_llcp_set_remote_gb(struct nfc_dev *dev, const u8 *gb, u8 gb_len);
52 u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len);
53 int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb);
54 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
55 int nfc_llcp_local_put(struct nfc_llcp_local *local);
56 int __init nfc_llcp_init(void);
57 void nfc_llcp_exit(void);
58 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
59 void nfc_llcp_free_sdp_tlv_list(struct hlist_head *head);
60
61 int __init rawsock_init(void);
62 void rawsock_exit(void);
63
64 int __init af_nfc_init(void);
65 void af_nfc_exit(void);
66 int nfc_proto_register(const struct nfc_protocol *nfc_proto);
67 void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
68
69 extern int nfc_devlist_generation;
70 extern struct mutex nfc_devlist_mutex;
71
72 int __init nfc_genl_init(void);
73 void nfc_genl_exit(void);
74
75 void nfc_genl_data_init(struct nfc_genl_data *genl_data);
76 void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
77
78 int nfc_genl_targets_found(struct nfc_dev *dev);
79 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx);
80
81 int nfc_genl_device_added(struct nfc_dev *dev);
82 int nfc_genl_device_removed(struct nfc_dev *dev);
83
84 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
85 u8 comm_mode, u8 rf_mode);
86 int nfc_genl_dep_link_down_event(struct nfc_dev *dev);
87
88 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol);
89 int nfc_genl_tm_deactivated(struct nfc_dev *dev);
90
91 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list);
92
93 int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type);
94 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx);
95 int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
96 struct nfc_evt_transaction *evt_transaction);
97 int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx);
98
99 struct nfc_dev *nfc_get_device(unsigned int idx);
100
nfc_put_device(struct nfc_dev * dev)101 static inline void nfc_put_device(struct nfc_dev *dev)
102 {
103 put_device(&dev->dev);
104 }
105
nfc_device_iter_init(struct class_dev_iter * iter)106 static inline void nfc_device_iter_init(struct class_dev_iter *iter)
107 {
108 class_dev_iter_init(iter, &nfc_class, NULL, NULL);
109 }
110
nfc_device_iter_next(struct class_dev_iter * iter)111 static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
112 {
113 struct device *d = class_dev_iter_next(iter);
114 if (!d)
115 return NULL;
116
117 return to_nfc_dev(d);
118 }
119
nfc_device_iter_exit(struct class_dev_iter * iter)120 static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
121 {
122 class_dev_iter_exit(iter);
123 }
124
125 int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name);
126 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
127 u32 result);
128
129 int nfc_dev_up(struct nfc_dev *dev);
130
131 int nfc_dev_down(struct nfc_dev *dev);
132
133 int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols);
134
135 int nfc_stop_poll(struct nfc_dev *dev);
136
137 int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode);
138
139 int nfc_dep_link_down(struct nfc_dev *dev);
140
141 int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
142
143 int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx, u8 mode);
144
145 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
146 data_exchange_cb_t cb, void *cb_context);
147
148 int nfc_enable_se(struct nfc_dev *dev, u32 se_idx);
149 int nfc_disable_se(struct nfc_dev *dev, u32 se_idx);
150
151 #endif /* __LOCAL_NFC_H */
152