2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
5 * Copyright (C) 2011 Texas Instruments, Inc.
7 * Written by Ilan Elias <ilane@ti.com>
10 * This file is based on hci_core.h, which was written
11 * by Maxim Krasnyansky.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2
15 * as published by the Free Software Foundation
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 #include <linux/interrupt.h>
32 #include <linux/skbuff.h>
34 #include <net/nfc/nfc.h>
35 #include <net/nfc/nci.h>
37 /* NCI device flags */
45 /* NCI device states */
49 NCI_W4_ALL_DISCOVERIES
,
55 #define NCI_RESET_TIMEOUT 5000
56 #define NCI_INIT_TIMEOUT 5000
57 #define NCI_RF_DISC_TIMEOUT 5000
58 #define NCI_RF_DISC_SELECT_TIMEOUT 5000
59 #define NCI_RF_DEACTIVATE_TIMEOUT 30000
60 #define NCI_CMD_TIMEOUT 5000
61 #define NCI_DATA_TIMEOUT 700
66 int (*open
)(struct nci_dev
*ndev
);
67 int (*close
)(struct nci_dev
*ndev
);
68 int (*send
)(struct sk_buff
*skb
);
71 #define NCI_MAX_SUPPORTED_RF_INTERFACES 4
72 #define NCI_MAX_DISCOVERED_TARGETS 10
74 /* NCI Core structures */
76 struct nfc_dev
*nfc_dev
;
88 struct timer_list cmd_timer
;
89 struct timer_list data_timer
;
91 struct workqueue_struct
*cmd_wq
;
92 struct work_struct cmd_work
;
94 struct workqueue_struct
*rx_wq
;
95 struct work_struct rx_work
;
97 struct workqueue_struct
*tx_wq
;
98 struct work_struct tx_work
;
100 struct sk_buff_head cmd_q
;
101 struct sk_buff_head rx_q
;
102 struct sk_buff_head tx_q
;
104 struct mutex req_lock
;
105 struct completion req_completion
;
112 __u32 target_active_prot
;
114 struct nfc_target targets
[NCI_MAX_DISCOVERED_TARGETS
];
117 /* received during NCI_OP_CORE_RESET_RSP */
120 /* received during NCI_OP_CORE_INIT_RSP */
122 __u8 num_supported_rf_interfaces
;
123 __u8 supported_rf_interfaces
124 [NCI_MAX_SUPPORTED_RF_INTERFACES
];
125 __u8 max_logical_connections
;
126 __u16 max_routing_table_size
;
127 __u8 max_ctrl_pkt_payload_len
;
128 __u16 max_size_for_large_params
;
130 __u32 manufact_specific_info
;
132 /* received during NCI_OP_RF_INTF_ACTIVATED_NTF */
133 __u8 max_data_pkt_payload_size
;
134 __u8 initial_num_credits
;
136 /* stored during nci_data_exchange */
137 data_exchange_cb_t data_exchange_cb
;
138 void *data_exchange_cb_context
;
139 struct sk_buff
*rx_data_reassembly
;
142 /* ----- NCI Devices ----- */
143 struct nci_dev
*nci_allocate_device(struct nci_ops
*ops
,
144 __u32 supported_protocols
,
147 void nci_free_device(struct nci_dev
*ndev
);
148 int nci_register_device(struct nci_dev
*ndev
);
149 void nci_unregister_device(struct nci_dev
*ndev
);
150 int nci_recv_frame(struct sk_buff
*skb
);
152 static inline struct sk_buff
*nci_skb_alloc(struct nci_dev
*ndev
,
158 skb
= alloc_skb(len
+ ndev
->tx_headroom
+ ndev
->tx_tailroom
, how
);
160 skb_reserve(skb
, ndev
->tx_headroom
);
165 static inline void nci_set_parent_dev(struct nci_dev
*ndev
, struct device
*dev
)
167 nfc_set_parent_dev(ndev
->nfc_dev
, dev
);
170 static inline void nci_set_drvdata(struct nci_dev
*ndev
, void *data
)
172 ndev
->driver_data
= data
;
175 static inline void *nci_get_drvdata(struct nci_dev
*ndev
)
177 return ndev
->driver_data
;
180 void nci_rsp_packet(struct nci_dev
*ndev
, struct sk_buff
*skb
);
181 void nci_ntf_packet(struct nci_dev
*ndev
, struct sk_buff
*skb
);
182 void nci_rx_data_packet(struct nci_dev
*ndev
, struct sk_buff
*skb
);
183 int nci_send_cmd(struct nci_dev
*ndev
, __u16 opcode
, __u8 plen
, void *payload
);
184 int nci_send_data(struct nci_dev
*ndev
, __u8 conn_id
, struct sk_buff
*skb
);
185 void nci_data_exchange_complete(struct nci_dev
*ndev
, struct sk_buff
*skb
,
187 void nci_clear_target_list(struct nci_dev
*ndev
);
189 /* ----- NCI requests ----- */
190 #define NCI_REQ_DONE 0
191 #define NCI_REQ_PEND 1
192 #define NCI_REQ_CANCELED 2
194 void nci_req_complete(struct nci_dev
*ndev
, int result
);
196 /* ----- NCI status code ----- */
197 int nci_to_errno(__u8 code
);
199 #endif /* __NCI_CORE_H */