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3e256b8f LRV |
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 __NET_NFC_H | |
25 | #define __NET_NFC_H | |
26 | ||
d5a2ca60 | 27 | #include <linux/nfc.h> |
3e256b8f LRV |
28 | #include <linux/device.h> |
29 | #include <linux/skbuff.h> | |
30 | ||
31 | #define nfc_dev_info(dev, fmt, arg...) dev_info((dev), "NFC: " fmt "\n", ## arg) | |
32 | #define nfc_dev_err(dev, fmt, arg...) dev_err((dev), "NFC: " fmt "\n", ## arg) | |
33 | #define nfc_dev_dbg(dev, fmt, arg...) dev_dbg((dev), fmt "\n", ## arg) | |
34 | ||
35 | struct nfc_dev; | |
36 | ||
37 | /** | |
38 | * data_exchange_cb_t - Definition of nfc_data_exchange callback | |
39 | * | |
40 | * @context: nfc_data_exchange cb_context parameter | |
41 | * @skb: response data | |
42 | * @err: If an error has occurred during data exchange, it is the | |
43 | * error number. Zero means no error. | |
44 | * | |
45 | * When a rx or tx package is lost or corrupted or the target gets out | |
46 | * of the operating field, err is -EIO. | |
47 | */ | |
48 | typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb, | |
49 | int err); | |
50 | ||
90099433 EL |
51 | struct nfc_target; |
52 | ||
3e256b8f | 53 | struct nfc_ops { |
8b3fe7b5 IE |
54 | int (*dev_up)(struct nfc_dev *dev); |
55 | int (*dev_down)(struct nfc_dev *dev); | |
fe7c5800 SO |
56 | int (*start_poll)(struct nfc_dev *dev, |
57 | u32 im_protocols, u32 tm_protocols); | |
3e256b8f | 58 | void (*stop_poll)(struct nfc_dev *dev); |
90099433 EL |
59 | int (*dep_link_up)(struct nfc_dev *dev, struct nfc_target *target, |
60 | u8 comm_mode, u8 *gb, size_t gb_len); | |
1ed28f61 | 61 | int (*dep_link_down)(struct nfc_dev *dev); |
90099433 | 62 | int (*activate_target)(struct nfc_dev *dev, struct nfc_target *target, |
0a40acb2 | 63 | u32 protocol); |
90099433 EL |
64 | void (*deactivate_target)(struct nfc_dev *dev, |
65 | struct nfc_target *target); | |
be9ae4ce | 66 | int (*im_transceive)(struct nfc_dev *dev, struct nfc_target *target, |
0a40acb2 SO |
67 | struct sk_buff *skb, data_exchange_cb_t cb, |
68 | void *cb_context); | |
be9ae4ce | 69 | int (*tm_send)(struct nfc_dev *dev, struct sk_buff *skb); |
90099433 | 70 | int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target); |
3e256b8f LRV |
71 | }; |
72 | ||
1ed28f61 SO |
73 | #define NFC_TARGET_IDX_ANY -1 |
74 | #define NFC_MAX_GT_LEN 48 | |
767f19ae | 75 | #define NFC_ATR_RES_GT_OFFSET 15 |
1ed28f61 | 76 | |
4d12b8b1 LRV |
77 | struct nfc_target { |
78 | u32 idx; | |
79 | u32 supported_protocols; | |
80 | u16 sens_res; | |
81 | u8 sel_res; | |
288e0713 | 82 | u8 nfcid1_len; |
d5a2ca60 IE |
83 | u8 nfcid1[NFC_NFCID1_MAXSIZE]; |
84 | u8 sensb_res_len; | |
85 | u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; | |
86 | u8 sensf_res_len; | |
87 | u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; | |
8b8d2e08 | 88 | u8 hci_reader_gate; |
c4fbb651 | 89 | u8 logical_idx; |
4d12b8b1 LRV |
90 | }; |
91 | ||
92 | struct nfc_genl_data { | |
93 | u32 poll_req_pid; | |
94 | struct mutex genl_data_mutex; | |
95 | }; | |
96 | ||
3e256b8f | 97 | struct nfc_dev { |
95c96174 | 98 | unsigned int idx; |
01ae0eea | 99 | u32 target_next_idx; |
4d12b8b1 LRV |
100 | struct nfc_target *targets; |
101 | int n_targets; | |
102 | int targets_generation; | |
3e256b8f | 103 | struct device dev; |
8b3fe7b5 | 104 | bool dev_up; |
f212ad5e | 105 | u8 rf_mode; |
3e256b8f | 106 | bool polling; |
90099433 | 107 | struct nfc_target *active_target; |
1ed28f61 | 108 | bool dep_link_up; |
4d12b8b1 | 109 | struct nfc_genl_data genl_data; |
3e256b8f LRV |
110 | u32 supported_protocols; |
111 | ||
e8753043 SO |
112 | int tx_headroom; |
113 | int tx_tailroom; | |
114 | ||
c8d56ae7 EL |
115 | struct timer_list check_pres_timer; |
116 | struct workqueue_struct *check_pres_wq; | |
117 | struct work_struct check_pres_work; | |
118 | ||
3e256b8f LRV |
119 | struct nfc_ops *ops; |
120 | }; | |
121 | #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev) | |
122 | ||
123 | extern struct class nfc_class; | |
124 | ||
125 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
0a40acb2 SO |
126 | u32 supported_protocols, |
127 | int tx_headroom, | |
128 | int tx_tailroom); | |
3e256b8f LRV |
129 | |
130 | /** | |
131 | * nfc_free_device - free nfc device | |
132 | * | |
133 | * @dev: The nfc device to free | |
134 | */ | |
135 | static inline void nfc_free_device(struct nfc_dev *dev) | |
136 | { | |
137 | put_device(&dev->dev); | |
138 | } | |
139 | ||
140 | int nfc_register_device(struct nfc_dev *dev); | |
141 | ||
142 | void nfc_unregister_device(struct nfc_dev *dev); | |
143 | ||
144 | /** | |
145 | * nfc_set_parent_dev - set the parent device | |
146 | * | |
147 | * @nfc_dev: The nfc device whose parent is being set | |
148 | * @dev: The parent device | |
149 | */ | |
150 | static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev, | |
0a40acb2 | 151 | struct device *dev) |
3e256b8f LRV |
152 | { |
153 | nfc_dev->dev.parent = dev; | |
154 | } | |
155 | ||
156 | /** | |
157 | * nfc_set_drvdata - set driver specifc data | |
158 | * | |
159 | * @dev: The nfc device | |
160 | * @data: Pointer to driver specifc data | |
161 | */ | |
162 | static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data) | |
163 | { | |
164 | dev_set_drvdata(&dev->dev, data); | |
165 | } | |
166 | ||
167 | /** | |
168 | * nfc_get_drvdata - get driver specifc data | |
169 | * | |
170 | * @dev: The nfc device | |
171 | */ | |
172 | static inline void *nfc_get_drvdata(struct nfc_dev *dev) | |
173 | { | |
174 | return dev_get_drvdata(&dev->dev); | |
175 | } | |
176 | ||
177 | /** | |
178 | * nfc_device_name - get the nfc device name | |
179 | * | |
180 | * @dev: The nfc device whose name to return | |
181 | */ | |
182 | static inline const char *nfc_device_name(struct nfc_dev *dev) | |
183 | { | |
184 | return dev_name(&dev->dev); | |
185 | } | |
186 | ||
7c7cd3bf | 187 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
0a40acb2 SO |
188 | unsigned int flags, unsigned int size, |
189 | unsigned int *err); | |
7c7cd3bf | 190 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp); |
3e256b8f | 191 | |
541d920b | 192 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, |
0a40acb2 | 193 | u8 *gt, u8 gt_len); |
ab73b751 | 194 | u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len); |
541d920b | 195 | |
0a40acb2 SO |
196 | int nfc_targets_found(struct nfc_dev *dev, |
197 | struct nfc_target *targets, int ntargets); | |
e1da0efa | 198 | int nfc_target_lost(struct nfc_dev *dev, u32 target_idx); |
4d12b8b1 | 199 | |
1ed28f61 SO |
200 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, |
201 | u8 comm_mode, u8 rf_mode); | |
202 | ||
fc40a8c1 SO |
203 | int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode, |
204 | u8 *gb, size_t gb_len); | |
205 | int nfc_tm_deactivated(struct nfc_dev *dev); | |
73167ced | 206 | int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb); |
fc40a8c1 | 207 | |
456411ca EL |
208 | void nfc_driver_failure(struct nfc_dev *dev, int err); |
209 | ||
3e256b8f | 210 | #endif /* __NET_NFC_H */ |