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, u8 *out_gb, size_t gb_max_len, 53 size_t *general_bytes_len); 54 int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb); 55 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev); 56 int nfc_llcp_local_put(struct nfc_llcp_local *local); 57 int __init nfc_llcp_init(void); 58 void nfc_llcp_exit(void); 59 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp); 60 void nfc_llcp_free_sdp_tlv_list(struct hlist_head *head); 61 62 int __init rawsock_init(void); 63 void rawsock_exit(void); 64 65 int __init af_nfc_init(void); 66 void af_nfc_exit(void); 67 int nfc_proto_register(const struct nfc_protocol *nfc_proto); 68 void nfc_proto_unregister(const struct nfc_protocol *nfc_proto); 69 70 extern int nfc_devlist_generation; 71 extern struct mutex nfc_devlist_mutex; 72 73 int __init nfc_genl_init(void); 74 void nfc_genl_exit(void); 75 76 void nfc_genl_data_init(struct nfc_genl_data *genl_data); 77 void nfc_genl_data_exit(struct nfc_genl_data *genl_data); 78 79 int nfc_genl_targets_found(struct nfc_dev *dev); 80 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx); 81 82 int nfc_genl_device_added(struct nfc_dev *dev); 83 int nfc_genl_device_removed(struct nfc_dev *dev); 84 85 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, 86 u8 comm_mode, u8 rf_mode); 87 int nfc_genl_dep_link_down_event(struct nfc_dev *dev); 88 89 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol); 90 int nfc_genl_tm_deactivated(struct nfc_dev *dev); 91 92 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list); 93 94 int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type); 95 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx); 96 int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, 97 struct nfc_evt_transaction *evt_transaction); 98 int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx); 99 100 struct nfc_dev *nfc_get_device(unsigned int idx); 101 102 static inline void nfc_put_device(struct nfc_dev *dev) 103 { 104 put_device(&dev->dev); 105 } 106 107 static inline void nfc_device_iter_init(struct class_dev_iter *iter) 108 { 109 class_dev_iter_init(iter, &nfc_class, NULL, NULL); 110 } 111 112 static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter) 113 { 114 struct device *d = class_dev_iter_next(iter); 115 if (!d) 116 return NULL; 117 118 return to_nfc_dev(d); 119 } 120 121 static inline void nfc_device_iter_exit(struct class_dev_iter *iter) 122 { 123 class_dev_iter_exit(iter); 124 } 125 126 int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name); 127 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, 128 u32 result); 129 130 int nfc_dev_up(struct nfc_dev *dev); 131 132 int nfc_dev_down(struct nfc_dev *dev); 133 134 int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols); 135 136 int nfc_stop_poll(struct nfc_dev *dev); 137 138 int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode); 139 140 int nfc_dep_link_down(struct nfc_dev *dev); 141 142 int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol); 143 144 int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx, u8 mode); 145 146 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb, 147 data_exchange_cb_t cb, void *cb_context); 148 149 int nfc_enable_se(struct nfc_dev *dev, u32 se_idx); 150 int nfc_disable_se(struct nfc_dev *dev, u32 se_idx); 151 152 #endif /* __LOCAL_NFC_H */ 153