aboutsummaryrefslogtreecommitdiff
path: root/include/net/nfc/hci.h
blob: 316694dafa5bae75363e34c035906e2d937c33c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
/*
 * Copyright (C) 2011  Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __NET_HCI_H
#define __NET_HCI_H

#include <linux/skbuff.h>

#include <net/nfc/nfc.h>

struct nfc_hci_dev;

struct nfc_hci_ops {
	int (*open) (struct nfc_hci_dev *hdev);
	void (*close) (struct nfc_hci_dev *hdev);
	int (*load_session) (struct nfc_hci_dev *hdev);
	int (*hci_ready) (struct nfc_hci_dev *hdev);
	/*
	 * xmit must always send the complete buffer before
	 * returning. Returned result must be 0 for success
	 * or negative for failure.
	 */
	int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
	int (*start_poll) (struct nfc_hci_dev *hdev,
			   u32 im_protocols, u32 tm_protocols);
	void (*stop_poll) (struct nfc_hci_dev *hdev);
	int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
			   u8 comm_mode, u8 *gb, size_t gb_len);
	int (*dep_link_down)(struct nfc_hci_dev *hdev);
	int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
				 struct nfc_target *target);
	int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
					   struct nfc_target *target);
	int (*im_transceive) (struct nfc_hci_dev *hdev,
			      struct nfc_target *target, struct sk_buff *skb,
			      data_exchange_cb_t cb, void *cb_context);
	int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
	int (*check_presence)(struct nfc_hci_dev *hdev,
			      struct nfc_target *target);
	int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
			      struct sk_buff *skb);
	void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
			    struct sk_buff *skb);
	int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name);
	int (*discover_se)(struct nfc_hci_dev *dev);
	int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx);
	int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx);
	int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx,
		      u8 *apdu, size_t apdu_length,
		      se_io_cb_t cb, void *cb_context);
};

/* Pipes */
#define NFC_HCI_DO_NOT_CREATE_PIPE	0x81
#define NFC_HCI_INVALID_PIPE	0x80
#define NFC_HCI_INVALID_GATE	0xFF
#define NFC_HCI_INVALID_HOST	0x80
#define NFC_HCI_LINK_MGMT_PIPE	0x00
#define NFC_HCI_ADMIN_PIPE	0x01

struct nfc_hci_gate {
	u8 gate;
	u8 pipe;
};

struct nfc_hci_pipe {
	u8 gate;
	u8 dest_host;
};

#define NFC_HCI_MAX_CUSTOM_GATES	50
/*
 * According to specification 102 622 chapter 4.4 Pipes,
 * the pipe identifier is 7 bits long.
 */
#define NFC_HCI_MAX_PIPES		127
struct nfc_hci_init_data {
	u8 gate_count;
	struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
	char session_id[9];
};

typedef int (*xmit) (struct sk_buff *skb, void *cb_data);

#define NFC_HCI_MAX_GATES		256

/*
 * These values can be specified by a driver to indicate it requires some
 * adaptation of the HCI standard.
 *
 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params
 */
enum {
	NFC_HCI_QUIRK_SHORT_CLEAR	= 0,
};

struct nfc_hci_dev {
	struct nfc_dev *ndev;

	u32 max_data_link_payload;

	bool shutting_down;

	struct mutex msg_tx_mutex;

	struct list_head msg_tx_queue;

	struct work_struct msg_tx_work;

	struct timer_list cmd_timer;
	struct hci_msg *cmd_pending_msg;

	struct sk_buff_head rx_hcp_frags;

	struct work_struct msg_rx_work;

	struct sk_buff_head msg_rx_queue;

	struct nfc_hci_ops *ops;

	struct nfc_llc *llc;

	struct nfc_hci_init_data init_data;

	void *clientdata;

	u8 gate2pipe[NFC_HCI_MAX_GATES];
	struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];

	u8 sw_romlib;
	u8 sw_patch;
	u8 sw_flashlib_major;
	u8 sw_flashlib_minor;

	u8 hw_derivative;
	u8 hw_version;
	u8 hw_mpw;
	u8 hw_software;
	u8 hw_bsid;

	int async_cb_type;
	data_exchange_cb_t async_cb;
	void *async_cb_context;

	u8 *gb;
	size_t gb_len;

	unsigned long quirks;
};

/* hci device allocation */
struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
					    struct nfc_hci_init_data *init_data,
					    unsigned long quirks,
					    u32 protocols,
					    const char *llc_name,
					    int tx_headroom,
					    int tx_tailroom,
					    int max_link_payload);
void nfc_hci_free_device(struct nfc_hci_dev *hdev);

int nfc_hci_register_device(struct nfc_hci_dev *hdev);
void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);

void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);

static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev,
					  struct nfc_vendor_cmd *cmds,
					  int n_cmds)
{
	return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds);
}

void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);

int nfc_hci_result_to_errno(u8 result);
void nfc_hci_reset_pipes(struct nfc_hci_dev *dev);
void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host);

/* Host IDs */
#define NFC_HCI_HOST_CONTROLLER_ID	0x00
#define NFC_HCI_TERMINAL_HOST_ID	0x01
#define NFC_HCI_UICC_HOST_ID		0x02

/* Host Controller Gates and registry indexes */
#define NFC_HCI_ADMIN_GATE 0x00
#define NFC_HCI_ADMIN_SESSION_IDENTITY	0x01
#define NFC_HCI_ADMIN_MAX_PIPE		0x02
#define NFC_HCI_ADMIN_WHITELIST		0x03
#define NFC_HCI_ADMIN_HOST_LIST		0x04

#define NFC_HCI_LOOPBACK_GATE		0x04

#define NFC_HCI_ID_MGMT_GATE		0x05
#define NFC_HCI_ID_MGMT_VERSION_SW	0x01
#define NFC_HCI_ID_MGMT_VERSION_HW	0x03
#define NFC_HCI_ID_MGMT_VENDOR_NAME	0x04
#define NFC_HCI_ID_MGMT_MODEL_ID	0x05
#define NFC_HCI_ID_MGMT_HCI_VERSION	0x02
#define NFC_HCI_ID_MGMT_GATES_LIST	0x06

#define NFC_HCI_LINK_MGMT_GATE		0x06
#define NFC_HCI_LINK_MGMT_REC_ERROR	0x01

#define NFC_HCI_RF_READER_B_GATE			0x11
#define NFC_HCI_RF_READER_B_PUPI			0x03
#define NFC_HCI_RF_READER_B_APPLICATION_DATA		0x04
#define NFC_HCI_RF_READER_B_AFI				0x02
#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE	0x01
#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA		0x05

#define NFC_HCI_RF_READER_A_GATE		0x13
#define NFC_HCI_RF_READER_A_UID			0x02
#define NFC_HCI_RF_READER_A_ATQA		0x04
#define NFC_HCI_RF_READER_A_APPLICATION_DATA	0x05
#define NFC_HCI_RF_READER_A_SAK			0x03
#define NFC_HCI_RF_READER_A_FWI_SFGT		0x06
#define NFC_HCI_RF_READER_A_DATARATE_MAX	0x01

#define NFC_HCI_TYPE_A_SEL_PROT(x)		(((x) & 0x60) >> 5)
#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE		0
#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443	1
#define NFC_HCI_TYPE_A_SEL_PROT_DEP		2
#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP	3

/* Generic events */
#define NFC_HCI_EVT_HCI_END_OF_OPERATION	0x01
#define NFC_HCI_EVT_POST_DATA			0x02
#define NFC_HCI_EVT_HOT_PLUG			0x03

/* Generic commands */
#define NFC_HCI_ANY_SET_PARAMETER	0x01
#define NFC_HCI_ANY_GET_PARAMETER	0x02
#define NFC_HCI_ANY_OPEN_PIPE		0x03
#define NFC_HCI_ANY_CLOSE_PIPE		0x04

/* Reader RF gates events */
#define NFC_HCI_EVT_READER_REQUESTED	0x10
#define NFC_HCI_EVT_END_OPERATION	0x11

/* Reader Application gate events */
#define NFC_HCI_EVT_TARGET_DISCOVERED	0x10

/* receiving messages from lower layer */
void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
			   struct sk_buff *skb);
void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
			  struct sk_buff *skb);
void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
			    struct sk_buff *skb);
void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);

/* connecting to gates and sending hci instructions */
int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
			 u8 pipe);
int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
		      struct sk_buff **skb);
int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
		      const u8 *param, size_t param_len);
int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
		     const u8 *param, size_t param_len, struct sk_buff **skb);
int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
			   const u8 *param, size_t param_len,
			   data_exchange_cb_t cb, void *cb_context);
int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
		       const u8 *param, size_t param_len);
int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate);
u32 nfc_hci_sak_to_protocol(u8 sak);

#endif /* __NET_HCI_H */