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 __attribute__((format (printf, 2, 3)))
  31 int nfc_printk(const char *level, const char *fmt, ...);
  32
  33 #define nfc_info(fmt, arg...) nfc_printk(KERN_INFO, fmt, ##arg)
  34 #define nfc_err(fmt, arg...) nfc_printk(KERN_ERR, fmt, ##arg)
  35 #define nfc_dbg(fmt, arg...) pr_debug(fmt "\n", ##arg)
  36
  37 struct nfc_protocol {
  38         int id;
  39         struct proto *proto;
  40         struct module *owner;
  41         int (*create)(struct net *net, struct socket *sock,
  42                         const struct nfc_protocol *nfc_proto);
  43 };
  44
  45 struct nfc_rawsock {
  46         struct sock sk;
  47         struct nfc_dev *dev;
  48         u32 target_idx;
  49         struct work_struct tx_work;
  50         bool tx_work_scheduled;
  51 };
  52 #define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
  53 #define to_rawsock_sk(_tx_work) \
  54         ((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
  55
  56 int __init rawsock_init(void);
  57 void rawsock_exit(void);
  58
  59 int __init af_nfc_init(void);
  60 void af_nfc_exit(void);
  61 int nfc_proto_register(const struct nfc_protocol *nfc_proto);
  62 void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
  63
  64 extern int nfc_devlist_generation;
  65 extern struct mutex nfc_devlist_mutex;
  66
  67 int __init nfc_genl_init(void);
  68 void nfc_genl_exit(void);
  69
  70 void nfc_genl_data_init(struct nfc_genl_data *genl_data);
  71 void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
  72
  73 int nfc_genl_targets_found(struct nfc_dev *dev);
  74
  75 int nfc_genl_device_added(struct nfc_dev *dev);
  76 int nfc_genl_device_removed(struct nfc_dev *dev);
  77
  78 struct nfc_dev *nfc_get_device(unsigned idx);
  79
  80 static inline void nfc_put_device(struct nfc_dev *dev)
  81 {
  82         put_device(&dev->dev);
  83 }
  84
  85 static inline void nfc_device_iter_init(struct class_dev_iter *iter)
  86 {
  87         class_dev_iter_init(iter, &nfc_class, NULL, NULL);
  88 }
  89
  90 static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
  91 {
  92         struct device *d = class_dev_iter_next(iter);
  93         if (!d)
  94                 return NULL;
  95
  96         return to_nfc_dev(d);
  97 }
  98
  99 static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
 100 {
 101         class_dev_iter_exit(iter);
 102 }
 103
 104 int nfc_dev_up(struct nfc_dev *dev);
 105
 106 int nfc_dev_down(struct nfc_dev *dev);
 107
 108 int nfc_start_poll(struct nfc_dev *dev, u32 protocols);
 109
 110 int nfc_stop_poll(struct nfc_dev *dev);
 111
 112 int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
 113
 114 int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx);
 115
 116 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx,
 117                                         struct sk_buff *skb,
 118                                         data_exchange_cb_t cb,
 119                                         void *cb_context);
 120
 121 #endif /* __LOCAL_NFC_H */