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24#ifndef __NET_NFC_H
25#define __NET_NFC_H
26
27#include <linux/nfc.h>
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
35struct nfc_dev;
36
37
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45
46
47
48typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
49 int err);
50
51struct nfc_target;
52
53struct nfc_ops {
54 int (*dev_up)(struct nfc_dev *dev);
55 int (*dev_down)(struct nfc_dev *dev);
56 int (*start_poll)(struct nfc_dev *dev,
57 u32 im_protocols, u32 tm_protocols);
58 void (*stop_poll)(struct nfc_dev *dev);
59 int (*dep_link_up)(struct nfc_dev *dev, struct nfc_target *target,
60 u8 comm_mode, u8 *gb, size_t gb_len);
61 int (*dep_link_down)(struct nfc_dev *dev);
62 int (*activate_target)(struct nfc_dev *dev, struct nfc_target *target,
63 u32 protocol);
64 void (*deactivate_target)(struct nfc_dev *dev,
65 struct nfc_target *target);
66 int (*im_transceive)(struct nfc_dev *dev, struct nfc_target *target,
67 struct sk_buff *skb, data_exchange_cb_t cb,
68 void *cb_context);
69 int (*tm_send)(struct nfc_dev *dev, struct sk_buff *skb);
70 int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target);
71 int (*fw_download)(struct nfc_dev *dev, const char *firmware_name);
72
73
74 int (*discover_se)(struct nfc_dev *dev);
75 int (*enable_se)(struct nfc_dev *dev, u32 se_idx);
76 int (*disable_se)(struct nfc_dev *dev, u32 se_idx);
77};
78
79#define NFC_TARGET_IDX_ANY -1
80#define NFC_MAX_GT_LEN 48
81#define NFC_ATR_RES_GT_OFFSET 15
82
83struct nfc_target {
84 u32 idx;
85 u32 supported_protocols;
86 u16 sens_res;
87 u8 sel_res;
88 u8 nfcid1_len;
89 u8 nfcid1[NFC_NFCID1_MAXSIZE];
90 u8 nfcid2_len;
91 u8 nfcid2[NFC_NFCID2_MAXSIZE];
92 u8 sensb_res_len;
93 u8 sensb_res[NFC_SENSB_RES_MAXSIZE];
94 u8 sensf_res_len;
95 u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
96 u8 hci_reader_gate;
97 u8 logical_idx;
98};
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108
109
110struct nfc_se {
111 struct list_head list;
112 u32 idx;
113 u16 type;
114 u16 state;
115};
116
117struct nfc_genl_data {
118 u32 poll_req_portid;
119 struct mutex genl_data_mutex;
120};
121
122struct nfc_dev {
123 int idx;
124 u32 target_next_idx;
125 struct nfc_target *targets;
126 int n_targets;
127 int targets_generation;
128 struct device dev;
129 bool dev_up;
130 bool fw_download_in_progress;
131 u8 rf_mode;
132 bool polling;
133 struct nfc_target *active_target;
134 bool dep_link_up;
135 struct nfc_genl_data genl_data;
136 u32 supported_protocols;
137
138 struct list_head secure_elements;
139
140 int tx_headroom;
141 int tx_tailroom;
142
143 struct timer_list check_pres_timer;
144 struct work_struct check_pres_work;
145
146 bool shutting_down;
147
148 struct rfkill *rfkill;
149
150 struct nfc_ops *ops;
151};
152#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
153
154extern struct class nfc_class;
155
156struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
157 u32 supported_protocols,
158 int tx_headroom,
159 int tx_tailroom);
160
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165
166static inline void nfc_free_device(struct nfc_dev *dev)
167{
168 put_device(&dev->dev);
169}
170
171int nfc_register_device(struct nfc_dev *dev);
172
173void nfc_unregister_device(struct nfc_dev *dev);
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180
181static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev,
182 struct device *dev)
183{
184 nfc_dev->dev.parent = dev;
185}
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192
193static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data)
194{
195 dev_set_drvdata(&dev->dev, data);
196}
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201
202
203static inline void *nfc_get_drvdata(struct nfc_dev *dev)
204{
205 return dev_get_drvdata(&dev->dev);
206}
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212
213static inline const char *nfc_device_name(struct nfc_dev *dev)
214{
215 return dev_name(&dev->dev);
216}
217
218struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
219 unsigned int flags, unsigned int size,
220 unsigned int *err);
221struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp);
222
223int nfc_set_remote_general_bytes(struct nfc_dev *dev,
224 u8 *gt, u8 gt_len);
225u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len);
226
227int nfc_targets_found(struct nfc_dev *dev,
228 struct nfc_target *targets, int ntargets);
229int nfc_target_lost(struct nfc_dev *dev, u32 target_idx);
230
231int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
232 u8 comm_mode, u8 rf_mode);
233
234int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode,
235 u8 *gb, size_t gb_len);
236int nfc_tm_deactivated(struct nfc_dev *dev);
237int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb);
238
239void nfc_driver_failure(struct nfc_dev *dev, int err);
240
241int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type);
242int nfc_remove_se(struct nfc_dev *dev, u32 se_idx);
243
244#endif
245