net/nfc/nfc.h

   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, 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 */