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 state */
46 #define NCI_RESET_TIMEOUT 5000
47 #define NCI_INIT_TIMEOUT 5000
48 #define NCI_RF_DISC_TIMEOUT 5000
49 #define NCI_RF_DEACTIVATE_TIMEOUT 5000
50 #define NCI_CMD_TIMEOUT 5000
55 int (*open)(struct nci_dev *ndev);
56 int (*close)(struct nci_dev *ndev);
57 int (*send)(struct sk_buff *skb);
60 #define NCI_MAX_SUPPORTED_RF_INTERFACES 4
62 /* NCI Core structures */
64 struct nfc_dev *nfc_dev;
75 struct timer_list cmd_timer;
77 struct workqueue_struct *cmd_wq;
78 struct work_struct cmd_work;
80 struct workqueue_struct *rx_wq;
81 struct work_struct rx_work;
83 struct workqueue_struct *tx_wq;
84 struct work_struct tx_work;
86 struct sk_buff_head cmd_q;
87 struct sk_buff_head rx_q;
88 struct sk_buff_head tx_q;
90 struct mutex req_lock;
91 struct completion req_completion;
98 __u32 target_available_prots;
99 __u32 target_active_prot;
101 /* received during NCI_OP_CORE_RESET_RSP */
104 /* received during NCI_OP_CORE_INIT_RSP */
106 __u8 num_supported_rf_interfaces;
107 __u8 supported_rf_interfaces
108 [NCI_MAX_SUPPORTED_RF_INTERFACES];
109 __u8 max_logical_connections;
110 __u16 max_routing_table_size;
111 __u8 max_control_packet_payload_length;
112 __u16 rf_sending_buffer_size;
113 __u16 rf_receiving_buffer_size;
114 __u16 manufacturer_id;
116 /* received during NCI_OP_CORE_CONN_CREATE_RSP for static conn 0 */
117 __u8 max_pkt_payload_size;
118 __u8 initial_num_credits;
121 /* stored during nci_data_exchange */
122 data_exchange_cb_t data_exchange_cb;
123 void *data_exchange_cb_context;
124 struct sk_buff *rx_data_reassembly;
127 /* ----- NCI Devices ----- */
128 struct nci_dev *nci_allocate_device(struct nci_ops *ops,
129 __u32 supported_protocols,
132 void nci_free_device(struct nci_dev *ndev);
133 int nci_register_device(struct nci_dev *ndev);
134 void nci_unregister_device(struct nci_dev *ndev);
135 int nci_recv_frame(struct sk_buff *skb);
137 static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev,
143 skb = alloc_skb(len + ndev->tx_headroom + ndev->tx_tailroom, how);
145 skb_reserve(skb, ndev->tx_headroom);
150 static inline void nci_set_parent_dev(struct nci_dev *ndev, struct device *dev)
152 nfc_set_parent_dev(ndev->nfc_dev, dev);
155 static inline void nci_set_drvdata(struct nci_dev *ndev, void *data)
157 ndev->driver_data = data;
160 static inline void *nci_get_drvdata(struct nci_dev *ndev)
162 return ndev->driver_data;
165 void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb);
166 void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb);
167 void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb);
168 int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload);
169 int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb);
170 void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
173 /* ----- NCI requests ----- */
174 #define NCI_REQ_DONE 0
175 #define NCI_REQ_PEND 1
176 #define NCI_REQ_CANCELED 2
178 void nci_req_complete(struct nci_dev *ndev, int result);
180 /* ----- NCI status code ----- */
181 int nci_to_errno(__u8 code);
183 #endif /* __NCI_CORE_H */