xref: /openbmc/linux/net/nfc/nfc.h (revision 6d6a8d6a)
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 __init nfc_llcp_init(void);
56  void nfc_llcp_exit(void);
57  void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
58  void nfc_llcp_free_sdp_tlv_list(struct hlist_head *head);
59  
60  int __init rawsock_init(void);
61  void rawsock_exit(void);
62  
63  int __init af_nfc_init(void);
64  void af_nfc_exit(void);
65  int nfc_proto_register(const struct nfc_protocol *nfc_proto);
66  void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
67  
68  extern int nfc_devlist_generation;
69  extern struct mutex nfc_devlist_mutex;
70  
71  int __init nfc_genl_init(void);
72  void nfc_genl_exit(void);
73  
74  void nfc_genl_data_init(struct nfc_genl_data *genl_data);
75  void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
76  
77  int nfc_genl_targets_found(struct nfc_dev *dev);
78  int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx);
79  
80  int nfc_genl_device_added(struct nfc_dev *dev);
81  int nfc_genl_device_removed(struct nfc_dev *dev);
82  
83  int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
84  			       u8 comm_mode, u8 rf_mode);
85  int nfc_genl_dep_link_down_event(struct nfc_dev *dev);
86  
87  int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol);
88  int nfc_genl_tm_deactivated(struct nfc_dev *dev);
89  
90  int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list);
91  
92  int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type);
93  int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx);
94  int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
95  			    struct nfc_evt_transaction *evt_transaction);
96  int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx);
97  
98  struct nfc_dev *nfc_get_device(unsigned int idx);
99  
100  static inline void nfc_put_device(struct nfc_dev *dev)
101  {
102  	put_device(&dev->dev);
103  }
104  
105  static inline void nfc_device_iter_init(struct class_dev_iter *iter)
106  {
107  	class_dev_iter_init(iter, &nfc_class, NULL, NULL);
108  }
109  
110  static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
111  {
112  	struct device *d = class_dev_iter_next(iter);
113  	if (!d)
114  		return NULL;
115  
116  	return to_nfc_dev(d);
117  }
118  
119  static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
120  {
121  	class_dev_iter_exit(iter);
122  }
123  
124  int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name);
125  int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
126  			      u32 result);
127  
128  int nfc_dev_up(struct nfc_dev *dev);
129  
130  int nfc_dev_down(struct nfc_dev *dev);
131  
132  int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols);
133  
134  int nfc_stop_poll(struct nfc_dev *dev);
135  
136  int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode);
137  
138  int nfc_dep_link_down(struct nfc_dev *dev);
139  
140  int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
141  
142  int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx, u8 mode);
143  
144  int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
145  		      data_exchange_cb_t cb, void *cb_context);
146  
147  int nfc_enable_se(struct nfc_dev *dev, u32 se_idx);
148  int nfc_disable_se(struct nfc_dev *dev, u32 se_idx);
149  
150  #endif /* __LOCAL_NFC_H */
151