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  * Permission to use, copy, modify, and/or distribute this software for any
9  * purpose with or without fee is hereby granted, provided that the above
10  * copyright notice and this permission notice appear in all copies.
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19  */
20 
21 #ifndef __LINUX_NFC_H
22 #define __LINUX_NFC_H
23 
24 #include <linux/types.h>
25 #include <linux/socket.h>
26 
27 #define NFC_GENL_NAME "nfc"
28 #define NFC_GENL_VERSION 1
29 
30 #define NFC_GENL_MCAST_EVENT_NAME "events"
31 
32 /**
33  * enum nfc_commands - supported nfc commands
34  *
35  * @NFC_CMD_UNSPEC: unspecified command
36  *
37  * @NFC_CMD_GET_DEVICE: request information about a device (requires
38  *	%NFC_ATTR_DEVICE_INDEX) or dump request to get a list of all nfc devices
39  * @NFC_CMD_DEV_UP: turn on the nfc device
40  *	(requires %NFC_ATTR_DEVICE_INDEX)
41  * @NFC_CMD_DEV_DOWN: turn off the nfc device
42  *	(requires %NFC_ATTR_DEVICE_INDEX)
43  * @NFC_CMD_START_POLL: start polling for targets using the given protocols
44  *	(requires %NFC_ATTR_DEVICE_INDEX and %NFC_ATTR_PROTOCOLS)
45  * @NFC_CMD_STOP_POLL: stop polling for targets (requires
46  *	%NFC_ATTR_DEVICE_INDEX)
47  * @NFC_CMD_GET_TARGET: dump all targets found by the previous poll (requires
48  *	%NFC_ATTR_DEVICE_INDEX)
49  * @NFC_EVENT_TARGETS_FOUND: event emitted when a new target is found
50  *	(it sends %NFC_ATTR_DEVICE_INDEX)
51  * @NFC_EVENT_DEVICE_ADDED: event emitted when a new device is registred
52  *	(it sends %NFC_ATTR_DEVICE_NAME, %NFC_ATTR_DEVICE_INDEX and
53  *	%NFC_ATTR_PROTOCOLS)
54  * @NFC_EVENT_DEVICE_REMOVED: event emitted when a device is removed
55  *	(it sends %NFC_ATTR_DEVICE_INDEX)
56  * @NFC_EVENT_TM_ACTIVATED: event emitted when the adapter is activated in
57  *      target mode.
58  * @NFC_EVENT_DEVICE_DEACTIVATED: event emitted when the adapter is deactivated
59  *      from target mode.
60  * @NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device
61  * @NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
62  *	a device. LTO must be set before the link is up otherwise -EINPROGRESS
63  *	is returned. RW and MIUX can be set at anytime and will be passed in
64  *	subsequent CONNECT and CC messages.
65  *	If one of the passed parameters is wrong none is set and -EINVAL is
66  *	returned.
67  * @NFC_CMD_ENABLE_SE: Enable the physical link to a specific secure element.
68  *	Once enabled a secure element will handle card emulation mode, i.e.
69  *	starting a poll from a device which has a secure element enabled means
70  *	we want to do SE based card emulation.
71  * @NFC_CMD_DISABLE_SE: Disable the physical link to a specific secure element.
72  * @NFC_CMD_FW_DOWNLOAD: Request to Load/flash firmware, or event to inform
73  *	that some firmware was loaded
74  * @NFC_EVENT_SE_ADDED: Event emitted when a new secure element is discovered.
75  *	This typically will be sent whenever a new NFC controller with either
76  *	an embedded SE or an UICC one connected to it through SWP.
77  * @NFC_EVENT_SE_REMOVED: Event emitted when a secure element is removed from
78  *	the system, as a consequence of e.g. an NFC controller being unplugged.
79  * @NFC_EVENT_SE_CONNECTIVITY: This event is emitted whenever a secure element
80  *	is requesting connectivity access. For example a UICC SE may need to
81  *	talk with a sleeping modem and will notify this need by sending this
82  *	event. It is then up to userspace to decide if it will wake the modem
83  *	up or not.
84  * @NFC_EVENT_SE_TRANSACTION: This event is sent when an application running on
85  *	a specific SE notifies us about the end of a transaction. The parameter
86  *	for this event is the application ID (AID).
87  * @NFC_CMD_GET_SE: Dump all discovered secure elements from an NFC controller.
88  * @NFC_CMD_SE_IO: Send/Receive APDUs to/from the selected secure element.
89  * @NFC_CMD_ACTIVATE_TARGET: Request NFC controller to reactivate target.
90  * @NFC_CMD_VENDOR: Vendor specific command, to be implemented directly
91  *	from the driver in order to support hardware specific operations.
92  * @NFC_CMD_DEACTIVATE_TARGET: Request NFC controller to deactivate target.
93  */
94 enum nfc_commands {
95 	NFC_CMD_UNSPEC,
96 	NFC_CMD_GET_DEVICE,
97 	NFC_CMD_DEV_UP,
98 	NFC_CMD_DEV_DOWN,
99 	NFC_CMD_DEP_LINK_UP,
100 	NFC_CMD_DEP_LINK_DOWN,
101 	NFC_CMD_START_POLL,
102 	NFC_CMD_STOP_POLL,
103 	NFC_CMD_GET_TARGET,
104 	NFC_EVENT_TARGETS_FOUND,
105 	NFC_EVENT_DEVICE_ADDED,
106 	NFC_EVENT_DEVICE_REMOVED,
107 	NFC_EVENT_TARGET_LOST,
108 	NFC_EVENT_TM_ACTIVATED,
109 	NFC_EVENT_TM_DEACTIVATED,
110 	NFC_CMD_LLC_GET_PARAMS,
111 	NFC_CMD_LLC_SET_PARAMS,
112 	NFC_CMD_ENABLE_SE,
113 	NFC_CMD_DISABLE_SE,
114 	NFC_CMD_LLC_SDREQ,
115 	NFC_EVENT_LLC_SDRES,
116 	NFC_CMD_FW_DOWNLOAD,
117 	NFC_EVENT_SE_ADDED,
118 	NFC_EVENT_SE_REMOVED,
119 	NFC_EVENT_SE_CONNECTIVITY,
120 	NFC_EVENT_SE_TRANSACTION,
121 	NFC_CMD_GET_SE,
122 	NFC_CMD_SE_IO,
123 	NFC_CMD_ACTIVATE_TARGET,
124 	NFC_CMD_VENDOR,
125 	NFC_CMD_DEACTIVATE_TARGET,
126 /* private: internal use only */
127 	__NFC_CMD_AFTER_LAST
128 };
129 #define NFC_CMD_MAX (__NFC_CMD_AFTER_LAST - 1)
130 
131 /**
132  * enum nfc_attrs - supported nfc attributes
133  *
134  * @NFC_ATTR_UNSPEC: unspecified attribute
135  *
136  * @NFC_ATTR_DEVICE_INDEX: index of nfc device
137  * @NFC_ATTR_DEVICE_NAME: device name, max 8 chars
138  * @NFC_ATTR_PROTOCOLS: nfc protocols - bitwise or-ed combination from
139  *	NFC_PROTO_*_MASK constants
140  * @NFC_ATTR_TARGET_INDEX: index of the nfc target
141  * @NFC_ATTR_TARGET_SENS_RES: NFC-A targets extra information such as NFCID
142  * @NFC_ATTR_TARGET_SEL_RES: NFC-A targets extra information (useful if the
143  *	target is not NFC-Forum compliant)
144  * @NFC_ATTR_TARGET_NFCID1: NFC-A targets identifier, max 10 bytes
145  * @NFC_ATTR_TARGET_SENSB_RES: NFC-B targets extra information, max 12 bytes
146  * @NFC_ATTR_TARGET_SENSF_RES: NFC-F targets extra information, max 18 bytes
147  * @NFC_ATTR_COMM_MODE: Passive or active mode
148  * @NFC_ATTR_RF_MODE: Initiator or target
149  * @NFC_ATTR_IM_PROTOCOLS: Initiator mode protocols to poll for
150  * @NFC_ATTR_TM_PROTOCOLS: Target mode protocols to listen for
151  * @NFC_ATTR_LLC_PARAM_LTO: Link TimeOut parameter
152  * @NFC_ATTR_LLC_PARAM_RW: Receive Window size parameter
153  * @NFC_ATTR_LLC_PARAM_MIUX: MIU eXtension parameter
154  * @NFC_ATTR_SE: Available Secure Elements
155  * @NFC_ATTR_FIRMWARE_NAME: Free format firmware version
156  * @NFC_ATTR_SE_INDEX: Secure element index
157  * @NFC_ATTR_SE_TYPE: Secure element type (UICC or EMBEDDED)
158  * @NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS: Firmware download operation status
159  * @NFC_ATTR_APDU: Secure element APDU
160  * @NFC_ATTR_TARGET_ISO15693_DSFID: ISO 15693 Data Storage Format Identifier
161  * @NFC_ATTR_TARGET_ISO15693_UID: ISO 15693 Unique Identifier
162  * @NFC_ATTR_SE_PARAMS: Parameters data from an evt_transaction
163  * @NFC_ATTR_VENDOR_ID: NFC manufacturer unique ID, typically an OUI
164  * @NFC_ATTR_VENDOR_SUBCMD: Vendor specific sub command
165  * @NFC_ATTR_VENDOR_DATA: Vendor specific data, to be optionally passed
166  *	to a vendor specific command implementation
167  */
168 enum nfc_attrs {
169 	NFC_ATTR_UNSPEC,
170 	NFC_ATTR_DEVICE_INDEX,
171 	NFC_ATTR_DEVICE_NAME,
172 	NFC_ATTR_PROTOCOLS,
173 	NFC_ATTR_TARGET_INDEX,
174 	NFC_ATTR_TARGET_SENS_RES,
175 	NFC_ATTR_TARGET_SEL_RES,
176 	NFC_ATTR_TARGET_NFCID1,
177 	NFC_ATTR_TARGET_SENSB_RES,
178 	NFC_ATTR_TARGET_SENSF_RES,
179 	NFC_ATTR_COMM_MODE,
180 	NFC_ATTR_RF_MODE,
181 	NFC_ATTR_DEVICE_POWERED,
182 	NFC_ATTR_IM_PROTOCOLS,
183 	NFC_ATTR_TM_PROTOCOLS,
184 	NFC_ATTR_LLC_PARAM_LTO,
185 	NFC_ATTR_LLC_PARAM_RW,
186 	NFC_ATTR_LLC_PARAM_MIUX,
187 	NFC_ATTR_SE,
188 	NFC_ATTR_LLC_SDP,
189 	NFC_ATTR_FIRMWARE_NAME,
190 	NFC_ATTR_SE_INDEX,
191 	NFC_ATTR_SE_TYPE,
192 	NFC_ATTR_SE_AID,
193 	NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS,
194 	NFC_ATTR_SE_APDU,
195 	NFC_ATTR_TARGET_ISO15693_DSFID,
196 	NFC_ATTR_TARGET_ISO15693_UID,
197 	NFC_ATTR_SE_PARAMS,
198 	NFC_ATTR_VENDOR_ID,
199 	NFC_ATTR_VENDOR_SUBCMD,
200 	NFC_ATTR_VENDOR_DATA,
201 /* private: internal use only */
202 	__NFC_ATTR_AFTER_LAST
203 };
204 #define NFC_ATTR_MAX (__NFC_ATTR_AFTER_LAST - 1)
205 
206 enum nfc_sdp_attr {
207 	NFC_SDP_ATTR_UNSPEC,
208 	NFC_SDP_ATTR_URI,
209 	NFC_SDP_ATTR_SAP,
210 /* private: internal use only */
211 	__NFC_SDP_ATTR_AFTER_LAST
212 };
213 #define NFC_SDP_ATTR_MAX (__NFC_SDP_ATTR_AFTER_LAST - 1)
214 
215 #define NFC_DEVICE_NAME_MAXSIZE		8
216 #define NFC_NFCID1_MAXSIZE		10
217 #define NFC_NFCID2_MAXSIZE		8
218 #define NFC_NFCID3_MAXSIZE		10
219 #define NFC_SENSB_RES_MAXSIZE		12
220 #define NFC_SENSF_RES_MAXSIZE		18
221 #define NFC_ATR_REQ_MAXSIZE		64
222 #define NFC_ATR_RES_MAXSIZE		64
223 #define NFC_ATR_REQ_GB_MAXSIZE		48
224 #define NFC_ATR_RES_GB_MAXSIZE		47
225 #define NFC_GB_MAXSIZE			48
226 #define NFC_FIRMWARE_NAME_MAXSIZE	32
227 #define NFC_ISO15693_UID_MAXSIZE	8
228 
229 /* NFC protocols */
230 #define NFC_PROTO_JEWEL		1
231 #define NFC_PROTO_MIFARE	2
232 #define NFC_PROTO_FELICA	3
233 #define NFC_PROTO_ISO14443	4
234 #define NFC_PROTO_NFC_DEP	5
235 #define NFC_PROTO_ISO14443_B	6
236 #define NFC_PROTO_ISO15693	7
237 
238 #define NFC_PROTO_MAX		8
239 
240 /* NFC communication modes */
241 #define NFC_COMM_ACTIVE  0
242 #define NFC_COMM_PASSIVE 1
243 
244 /* NFC RF modes */
245 #define NFC_RF_INITIATOR 0
246 #define NFC_RF_TARGET    1
247 #define NFC_RF_NONE      2
248 
249 /* NFC protocols masks used in bitsets */
250 #define NFC_PROTO_JEWEL_MASK      (1 << NFC_PROTO_JEWEL)
251 #define NFC_PROTO_MIFARE_MASK     (1 << NFC_PROTO_MIFARE)
252 #define NFC_PROTO_FELICA_MASK	  (1 << NFC_PROTO_FELICA)
253 #define NFC_PROTO_ISO14443_MASK	  (1 << NFC_PROTO_ISO14443)
254 #define NFC_PROTO_NFC_DEP_MASK	  (1 << NFC_PROTO_NFC_DEP)
255 #define NFC_PROTO_ISO14443_B_MASK (1 << NFC_PROTO_ISO14443_B)
256 #define NFC_PROTO_ISO15693_MASK	  (1 << NFC_PROTO_ISO15693)
257 
258 /* NFC Secure Elements */
259 #define NFC_SE_UICC     0x1
260 #define NFC_SE_EMBEDDED 0x2
261 
262 #define NFC_SE_DISABLED 0x0
263 #define NFC_SE_ENABLED  0x1
264 
265 struct sockaddr_nfc {
266 	__kernel_sa_family_t sa_family;
267 	__u32 dev_idx;
268 	__u32 target_idx;
269 	__u32 nfc_protocol;
270 };
271 
272 #define NFC_LLCP_MAX_SERVICE_NAME 63
273 struct sockaddr_nfc_llcp {
274 	__kernel_sa_family_t sa_family;
275 	__u32 dev_idx;
276 	__u32 target_idx;
277 	__u32 nfc_protocol;
278 	__u8 dsap; /* Destination SAP, if known */
279 	__u8 ssap; /* Source SAP to be bound to */
280 	char service_name[NFC_LLCP_MAX_SERVICE_NAME]; /* Service name URI */;
281 	__kernel_size_t service_name_len;
282 };
283 
284 /* NFC socket protocols */
285 #define NFC_SOCKPROTO_RAW	0
286 #define NFC_SOCKPROTO_LLCP	1
287 #define NFC_SOCKPROTO_MAX	2
288 
289 #define NFC_HEADER_SIZE 1
290 
291 /**
292  * Pseudo-header info for raw socket packets
293  * First byte is the adapter index
294  * Second byte contains flags
295  *  - 0x01 - Direction (0=RX, 1=TX)
296  *  - 0x02-0x04 - Payload type (000=LLCP, 001=NCI, 010=HCI, 011=Digital,
297  *                              100=Proprietary)
298  *  - 0x05-0x80 - Reserved
299  **/
300 #define NFC_RAW_HEADER_SIZE	2
301 #define NFC_DIRECTION_RX		0x00
302 #define NFC_DIRECTION_TX		0x01
303 
304 #define RAW_PAYLOAD_LLCP 0
305 #define RAW_PAYLOAD_NCI	1
306 #define RAW_PAYLOAD_HCI	2
307 #define RAW_PAYLOAD_DIGITAL	3
308 #define RAW_PAYLOAD_PROPRIETARY	4
309 
310 /* socket option names */
311 #define NFC_LLCP_RW		0
312 #define NFC_LLCP_MIUX		1
313 #define NFC_LLCP_REMOTE_MIU	2
314 #define NFC_LLCP_REMOTE_LTO	3
315 #define NFC_LLCP_REMOTE_RW	4
316 
317 #endif /*__LINUX_NFC_H */
318