net/nfc/nfc.h

   1 /*
   2  * Copyright (C) 2011 Instituto Nokia de Tecnologia
   3  *
   4  * Authors:
   5  *    Lauro Ramos Venancio <lauro.venancio@openbossa.org>
   6  *    Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the
  20  * Free Software Foundation, Inc.,
  21  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 #ifndef __LOCAL_NFC_H
  25 #define __LOCAL_NFC_H
  26
  27 #include <net/nfc/nfc.h>
  28 #include <net/sock.h>
  29
  30 struct nfc_protocol {
  31         int id;
  32         struct proto *proto;
  33         struct module *owner;
  34         int (*create)(struct net *net, struct socket *sock,
  35                       const struct nfc_protocol *nfc_proto);
  36 };
  37
  38 struct nfc_rawsock {
  39         struct sock sk;
  40         struct nfc_dev *dev;
  41         u32 target_idx;
  42         struct work_struct tx_work;
  43         bool tx_work_scheduled;
  44 };
  45 #define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
  46 #define to_rawsock_sk(_tx_work) \
  47         ((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
  48
  49 #ifdef CONFIG_NFC_LLCP
  50
  51 void nfc_llcp_mac_is_down(struct nfc_dev *dev);
  52 void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
  53                         u8 comm_mode, u8 rf_mode);
  54 int nfc_llcp_register_device(struct nfc_dev *dev);
  55 void nfc_llcp_unregister_device(struct nfc_dev *dev);
  56 int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len);
  57 u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len);
  58 int __init nfc_llcp_init(void);
  59 void nfc_llcp_exit(void);
  60
  61 #else
  62
  63 static inline void nfc_llcp_mac_is_down(struct nfc_dev *dev)
  64 {
  65 }
  66
  67 static inline void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
  68                                       u8 comm_mode, u8 rf_mode)
  69 {
  70 }
  71
  72 static inline int nfc_llcp_register_device(struct nfc_dev *dev)
  73 {
  74         return 0;
  75 }
  76
  77 static inline void nfc_llcp_unregister_device(struct nfc_dev *dev)
  78 {
  79 }
  80
  81 static inline int nfc_llcp_set_remote_gb(struct nfc_dev *dev,
  82                                          u8 *gb, u8 gb_len)
  83 {
  84         return 0;
  85 }
  86
  87 static inline u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, u8 *gb_len)
  88 {
  89         *gb_len = 0;
  90         return NULL;
  91 }
  92
  93 static inline int nfc_llcp_init(void)
  94 {
  95         return 0;
  96 }
  97
  98 static inline void nfc_llcp_exit(void)
  99 {
 100 }
 101
 102 #endif
 103
 104 int __init rawsock_init(void);
 105 void rawsock_exit(void);
 106
 107 int __init af_nfc_init(void);
 108 void af_nfc_exit(void);
 109 int nfc_proto_register(const struct nfc_protocol *nfc_proto);
 110 void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
 111
 112 extern int nfc_devlist_generation;
 113 extern struct mutex nfc_devlist_mutex;
 114
 115 int __init nfc_genl_init(void);
 116 void nfc_genl_exit(void);
 117
 118 void nfc_genl_data_init(struct nfc_genl_data *genl_data);
 119 void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
 120
 121 int nfc_genl_targets_found(struct nfc_dev *dev);
 122
 123 int nfc_genl_device_added(struct nfc_dev *dev);
 124 int nfc_genl_device_removed(struct nfc_dev *dev);
 125
 126 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
 127                                u8 comm_mode, u8 rf_mode);
 128 int nfc_genl_dep_link_down_event(struct nfc_dev *dev);
 129
 130 struct nfc_dev *nfc_get_device(unsigned idx);
 131
 132 static inline void nfc_put_device(struct nfc_dev *dev)
 133 {
 134         put_device(&dev->dev);
 135 }
 136
 137 static inline void nfc_device_iter_init(struct class_dev_iter *iter)
 138 {
 139         class_dev_iter_init(iter, &nfc_class, NULL, NULL);
 140 }
 141
 142 static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
 143 {
 144         struct device *d = class_dev_iter_next(iter);
 145         if (!d)
 146                 return NULL;
 147
 148         return to_nfc_dev(d);
 149 }
 150
 151 static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
 152 {
 153         class_dev_iter_exit(iter);
 154 }
 155
 156 int nfc_dev_up(struct nfc_dev *dev);
 157
 158 int nfc_dev_down(struct nfc_dev *dev);
 159
 160 int nfc_start_poll(struct nfc_dev *dev, u32 protocols);
 161
 162 int nfc_stop_poll(struct nfc_dev *dev);
 163
 164 int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode);
 165
 166 int nfc_dep_link_down(struct nfc_dev *dev);
 167
 168 int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
 169
 170 int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx);
 171
 172 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
 173                       data_exchange_cb_t cb, void *cb_context);
 174
 175 #endif /* __LOCAL_NFC_H */