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1/*
2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
4 *
5 * Copyright (C) 2011 Texas Instruments, Inc.
6 *
7 * Written by Ilan Elias <ilane@ti.com>
8 *
9 * Acknowledgements:
10 * This file is based on hci.h, which was written
11 * by Maxim Krasnyansky.
12 *
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
16 *
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.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <http://www.gnu.org/licenses/>.
24 *
25 */
26
27#ifndef __NCI_H
28#define __NCI_H
29
30/* NCI constants */
31#define NCI_MAX_NUM_MAPPING_CONFIGS 10
32#define NCI_MAX_NUM_RF_CONFIGS 10
33#define NCI_MAX_NUM_CONN 10
34#define NCI_MAX_PARAM_LEN 251
35
36/* NCI Status Codes */
37#define NCI_STATUS_OK 0x00
38#define NCI_STATUS_REJECTED 0x01
39#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
40#define NCI_STATUS_FAILED 0x03
41#define NCI_STATUS_NOT_INITIALIZED 0x04
42#define NCI_STATUS_SYNTAX_ERROR 0x05
43#define NCI_STATUS_SEMANTIC_ERROR 0x06
44#define NCI_STATUS_UNKNOWN_GID 0x07
45#define NCI_STATUS_UNKNOWN_OID 0x08
46#define NCI_STATUS_INVALID_PARAM 0x09
47#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
48/* Discovery Specific Status Codes */
49#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
50#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
51#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
52/* RF Interface Specific Status Codes */
53#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
54#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
55#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
56/* NFCEE Interface Specific Status Codes */
57#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
58#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
59#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
60#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3
61
62/* NCI RF Technology and Mode */
63#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
64#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
65#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
66#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
67#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
68#define NCI_NFC_15693_PASSIVE_POLL_MODE 0x06
69#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
70#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
71#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
72#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
73#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
74#define NCI_NFC_15693_PASSIVE_LISTEN_MODE 0x86
75
76/* NCI RF Technologies */
77#define NCI_NFC_RF_TECHNOLOGY_A 0x00
78#define NCI_NFC_RF_TECHNOLOGY_B 0x01
79#define NCI_NFC_RF_TECHNOLOGY_F 0x02
80#define NCI_NFC_RF_TECHNOLOGY_15693 0x03
81
82/* NCI Bit Rates */
83#define NCI_NFC_BIT_RATE_106 0x00
84#define NCI_NFC_BIT_RATE_212 0x01
85#define NCI_NFC_BIT_RATE_424 0x02
86#define NCI_NFC_BIT_RATE_848 0x03
87#define NCI_NFC_BIT_RATE_1695 0x04
88#define NCI_NFC_BIT_RATE_3390 0x05
89#define NCI_NFC_BIT_RATE_6780 0x06
90
91/* NCI RF Protocols */
92#define NCI_RF_PROTOCOL_UNKNOWN 0x00
93#define NCI_RF_PROTOCOL_T1T 0x01
94#define NCI_RF_PROTOCOL_T2T 0x02
95#define NCI_RF_PROTOCOL_T3T 0x03
96#define NCI_RF_PROTOCOL_ISO_DEP 0x04
97#define NCI_RF_PROTOCOL_NFC_DEP 0x05
98
99/* NCI RF Interfaces */
100#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
101#define NCI_RF_INTERFACE_FRAME 0x01
102#define NCI_RF_INTERFACE_ISO_DEP 0x02
103#define NCI_RF_INTERFACE_NFC_DEP 0x03
104
105/* NCI Configuration Parameter Tags */
106#define NCI_PN_ATR_REQ_GEN_BYTES 0x29
107
108/* NCI Reset types */
109#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
110#define NCI_RESET_TYPE_RESET_CONFIG 0x01
111
112/* NCI Static RF connection ID */
113#define NCI_STATIC_RF_CONN_ID 0x00
114
115/* NCI Data Flow Control */
116#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
117
118/* NCI RF_DISCOVER_MAP_CMD modes */
119#define NCI_DISC_MAP_MODE_POLL 0x01
120#define NCI_DISC_MAP_MODE_LISTEN 0x02
121
122/* NCI Discover Notification Type */
123#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
124#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
125#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
126
127/* NCI Deactivation Type */
128#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
129#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
130#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
131#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03
132
133/* Message Type (MT) */
134#define NCI_MT_DATA_PKT 0x00
135#define NCI_MT_CMD_PKT 0x01
136#define NCI_MT_RSP_PKT 0x02
137#define NCI_MT_NTF_PKT 0x03
138
139#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
140#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
141
142/* Packet Boundary Flag (PBF) */
143#define NCI_PBF_LAST 0x00
144#define NCI_PBF_CONT 0x01
145
146#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
147#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
148
149/* Control Opcode manipulation */
150#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
151 ((__u16)((oid)&0x3f)))
152#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
153#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
154#define nci_opcode_oid(op) (__u8)((op)&0x003f)
155
156/* Payload Length */
157#define nci_plen(hdr) (__u8)((hdr)[2])
158
159/* Connection ID */
160#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
161
162/* GID values */
163#define NCI_GID_CORE 0x0
164#define NCI_GID_RF_MGMT 0x1
165#define NCI_GID_NFCEE_MGMT 0x2
166#define NCI_GID_PROPRIETARY 0xf
167
168/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */
169#define NCI_SPI_HDR_LEN 4
170#define NCI_SPI_CRC_LEN 2
171
172/* ---- NCI Packet structures ---- */
173#define NCI_CTRL_HDR_SIZE 3
174#define NCI_DATA_HDR_SIZE 3
175
176struct nci_ctrl_hdr {
177 __u8 gid; /* MT & PBF & GID */
178 __u8 oid;
179 __u8 plen;
180} __packed;
181
182struct nci_data_hdr {
183 __u8 conn_id; /* MT & PBF & ConnID */
184 __u8 rfu;
185 __u8 plen;
186} __packed;
187
188/* ------------------------ */
189/* ----- NCI Commands ---- */
190/* ------------------------ */
191#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
192struct nci_core_reset_cmd {
193 __u8 reset_type;
194} __packed;
195
196#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
197
198#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
199struct set_config_param {
200 __u8 id;
201 __u8 len;
202 __u8 val[NCI_MAX_PARAM_LEN];
203} __packed;
204
205struct nci_core_set_config_cmd {
206 __u8 num_params;
207 struct set_config_param param; /* support 1 param per cmd is enough */
208} __packed;
209
210#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
211struct disc_map_config {
212 __u8 rf_protocol;
213 __u8 mode;
214 __u8 rf_interface;
215} __packed;
216
217struct nci_rf_disc_map_cmd {
218 __u8 num_mapping_configs;
219 struct disc_map_config mapping_configs
220 [NCI_MAX_NUM_MAPPING_CONFIGS];
221} __packed;
222
223#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
224struct disc_config {
225 __u8 rf_tech_and_mode;
226 __u8 frequency;
227} __packed;
228
229struct nci_rf_disc_cmd {
230 __u8 num_disc_configs;
231 struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
232} __packed;
233
234#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
235struct nci_rf_discover_select_cmd {
236 __u8 rf_discovery_id;
237 __u8 rf_protocol;
238 __u8 rf_interface;
239} __packed;
240
241#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
242struct nci_rf_deactivate_cmd {
243 __u8 type;
244} __packed;
245
246/* ----------------------- */
247/* ---- NCI Responses ---- */
248/* ----------------------- */
249#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
250struct nci_core_reset_rsp {
251 __u8 status;
252 __u8 nci_ver;
253 __u8 config_status;
254} __packed;
255
256#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
257struct nci_core_init_rsp_1 {
258 __u8 status;
259 __le32 nfcc_features;
260 __u8 num_supported_rf_interfaces;
261 __u8 supported_rf_interfaces[0]; /* variable size array */
262 /* continuted in nci_core_init_rsp_2 */
263} __packed;
264
265struct nci_core_init_rsp_2 {
266 __u8 max_logical_connections;
267 __le16 max_routing_table_size;
268 __u8 max_ctrl_pkt_payload_len;
269 __le16 max_size_for_large_params;
270 __u8 manufact_id;
271 __le32 manufact_specific_info;
272} __packed;
273
274#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
275struct nci_core_set_config_rsp {
276 __u8 status;
277 __u8 num_params;
278 __u8 params_id[0]; /* variable size array */
279} __packed;
280
281#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
282
283#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
284
285#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
286
287#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
288
289/* --------------------------- */
290/* ---- NCI Notifications ---- */
291/* --------------------------- */
292#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
293struct conn_credit_entry {
294 __u8 conn_id;
295 __u8 credits;
296} __packed;
297
298struct nci_core_conn_credit_ntf {
299 __u8 num_entries;
300 struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
301} __packed;
302
303#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
304
305#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
306struct nci_core_intf_error_ntf {
307 __u8 status;
308 __u8 conn_id;
309} __packed;
310
311#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
312struct rf_tech_specific_params_nfca_poll {
313 __u16 sens_res;
314 __u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
315 __u8 nfcid1[10];
316 __u8 sel_res_len; /* 0 or 1 Bytes */
317 __u8 sel_res;
318} __packed;
319
320struct rf_tech_specific_params_nfcb_poll {
321 __u8 sensb_res_len;
322 __u8 sensb_res[12]; /* 11 or 12 Bytes */
323} __packed;
324
325struct rf_tech_specific_params_nfcf_poll {
326 __u8 bit_rate;
327 __u8 sensf_res_len;
328 __u8 sensf_res[18]; /* 16 or 18 Bytes */
329} __packed;
330
331struct nci_rf_discover_ntf {
332 __u8 rf_discovery_id;
333 __u8 rf_protocol;
334 __u8 rf_tech_and_mode;
335 __u8 rf_tech_specific_params_len;
336
337 union {
338 struct rf_tech_specific_params_nfca_poll nfca_poll;
339 struct rf_tech_specific_params_nfcb_poll nfcb_poll;
340 struct rf_tech_specific_params_nfcf_poll nfcf_poll;
341 } rf_tech_specific_params;
342
343 __u8 ntf_type;
344} __packed;
345
346#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
347struct activation_params_nfca_poll_iso_dep {
348 __u8 rats_res_len;
349 __u8 rats_res[20];
350};
351
352struct activation_params_nfcb_poll_iso_dep {
353 __u8 attrib_res_len;
354 __u8 attrib_res[50];
355};
356
357struct activation_params_poll_nfc_dep {
358 __u8 atr_res_len;
359 __u8 atr_res[63];
360};
361
362struct nci_rf_intf_activated_ntf {
363 __u8 rf_discovery_id;
364 __u8 rf_interface;
365 __u8 rf_protocol;
366 __u8 activation_rf_tech_and_mode;
367 __u8 max_data_pkt_payload_size;
368 __u8 initial_num_credits;
369 __u8 rf_tech_specific_params_len;
370
371 union {
372 struct rf_tech_specific_params_nfca_poll nfca_poll;
373 struct rf_tech_specific_params_nfcb_poll nfcb_poll;
374 struct rf_tech_specific_params_nfcf_poll nfcf_poll;
375 } rf_tech_specific_params;
376
377 __u8 data_exch_rf_tech_and_mode;
378 __u8 data_exch_tx_bit_rate;
379 __u8 data_exch_rx_bit_rate;
380 __u8 activation_params_len;
381
382 union {
383 struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
384 struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
385 struct activation_params_poll_nfc_dep poll_nfc_dep;
386 } activation_params;
387
388} __packed;
389
390#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
391struct nci_rf_deactivate_ntf {
392 __u8 type;
393 __u8 reason;
394} __packed;
395
396#endif /* __NCI_H */