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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * The NFC Controller Interface is the communication protocol between an
4 * NFC Controller (NFCC) and a Device Host (DH).
5 *
6 * Copyright (C) 2014 Marvell International Ltd.
7 * Copyright (C) 2011 Texas Instruments, Inc.
8 *
9 * Written by Ilan Elias <ilane@ti.com>
10 *
11 * Acknowledgements:
12 * This file is based on hci.h, which was written
13 * by Maxim Krasnyansky.
14 */
15
16#ifndef __NCI_H
17#define __NCI_H
18
19#include <net/nfc/nfc.h>
20
21/* NCI constants */
22#define NCI_MAX_NUM_MAPPING_CONFIGS 10
23#define NCI_MAX_NUM_RF_CONFIGS 10
24#define NCI_MAX_NUM_CONN 10
25#define NCI_MAX_PARAM_LEN 251
26#define NCI_MAX_PAYLOAD_SIZE 255
27#define NCI_MAX_PACKET_SIZE 258
28
29/* NCI Status Codes */
30#define NCI_STATUS_OK 0x00
31#define NCI_STATUS_REJECTED 0x01
32#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
33#define NCI_STATUS_FAILED 0x03
34#define NCI_STATUS_NOT_INITIALIZED 0x04
35#define NCI_STATUS_SYNTAX_ERROR 0x05
36#define NCI_STATUS_SEMANTIC_ERROR 0x06
37#define NCI_STATUS_UNKNOWN_GID 0x07
38#define NCI_STATUS_UNKNOWN_OID 0x08
39#define NCI_STATUS_INVALID_PARAM 0x09
40#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
41/* Discovery Specific Status Codes */
42#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
43#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
44#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
45/* RF Interface Specific Status Codes */
46#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
47#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
48#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
49/* NFCEE Interface Specific Status Codes */
50#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
51#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
52#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
53#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3
54
55/* NFCEE Interface/Protocols */
56#define NCI_NFCEE_INTERFACE_APDU 0x00
57#define NCI_NFCEE_INTERFACE_HCI_ACCESS 0x01
58#define NCI_NFCEE_INTERFACE_TYPE3_CMD_SET 0x02
59#define NCI_NFCEE_INTERFACE_TRANSPARENT 0x03
60
61/* Destination type */
62#define NCI_DESTINATION_NFCC_LOOPBACK 0x01
63#define NCI_DESTINATION_REMOTE_NFC_ENDPOINT 0x02
64#define NCI_DESTINATION_NFCEE 0x03
65
66/* Destination-specific parameters type */
67#define NCI_DESTINATION_SPECIFIC_PARAM_RF_TYPE 0x00
68#define NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE 0x01
69
70/* NFCEE Discovery Action */
71#define NCI_NFCEE_DISCOVERY_ACTION_DISABLE 0x00
72#define NCI_NFCEE_DISCOVERY_ACTION_ENABLE 0x01
73
74/* NCI RF Technology and Mode */
75#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
76#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
77#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
78#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
79#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
80#define NCI_NFC_V_PASSIVE_POLL_MODE 0x06
81#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
82#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
83#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
84#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
85#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
86
87#define NCI_RF_TECH_MODE_LISTEN_MASK 0x80
88
89/* NCI RF Technologies */
90#define NCI_NFC_RF_TECHNOLOGY_A 0x00
91#define NCI_NFC_RF_TECHNOLOGY_B 0x01
92#define NCI_NFC_RF_TECHNOLOGY_F 0x02
93#define NCI_NFC_RF_TECHNOLOGY_V 0x03
94
95/* NCI Bit Rates */
96#define NCI_NFC_BIT_RATE_106 0x00
97#define NCI_NFC_BIT_RATE_212 0x01
98#define NCI_NFC_BIT_RATE_424 0x02
99#define NCI_NFC_BIT_RATE_848 0x03
100#define NCI_NFC_BIT_RATE_1695 0x04
101#define NCI_NFC_BIT_RATE_3390 0x05
102#define NCI_NFC_BIT_RATE_6780 0x06
103#define NCI_NFC_BIT_RATE_26 0x20
104
105/* NCI RF Protocols */
106#define NCI_RF_PROTOCOL_UNKNOWN 0x00
107#define NCI_RF_PROTOCOL_T1T 0x01
108#define NCI_RF_PROTOCOL_T2T 0x02
109#define NCI_RF_PROTOCOL_T3T 0x03
110#define NCI_RF_PROTOCOL_ISO_DEP 0x04
111#define NCI_RF_PROTOCOL_NFC_DEP 0x05
112#define NCI_RF_PROTOCOL_T5T 0x06
113
114/* NCI RF Interfaces */
115#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
116#define NCI_RF_INTERFACE_FRAME 0x01
117#define NCI_RF_INTERFACE_ISO_DEP 0x02
118#define NCI_RF_INTERFACE_NFC_DEP 0x03
119
120/* NCI Configuration Parameter Tags */
121#define NCI_PN_ATR_REQ_GEN_BYTES 0x29
122#define NCI_LN_ATR_RES_GEN_BYTES 0x61
123#define NCI_LA_SEL_INFO 0x32
124#define NCI_LF_PROTOCOL_TYPE 0x50
125#define NCI_LF_CON_BITR_F 0x54
126
127/* NCI Configuration Parameters masks */
128#define NCI_LA_SEL_INFO_ISO_DEP_MASK 0x20
129#define NCI_LA_SEL_INFO_NFC_DEP_MASK 0x40
130#define NCI_LF_PROTOCOL_TYPE_NFC_DEP_MASK 0x02
131#define NCI_LF_CON_BITR_F_212 0x02
132#define NCI_LF_CON_BITR_F_424 0x04
133
134/* NCI Reset types */
135#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
136#define NCI_RESET_TYPE_RESET_CONFIG 0x01
137
138/* NCI Static RF connection ID */
139#define NCI_STATIC_RF_CONN_ID 0x00
140
141/* NCI Data Flow Control */
142#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
143
144/* NCI RF_DISCOVER_MAP_CMD modes */
145#define NCI_DISC_MAP_MODE_POLL 0x01
146#define NCI_DISC_MAP_MODE_LISTEN 0x02
147
148/* NCI Discover Notification Type */
149#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
150#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
151#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
152
153/* NCI Deactivation Type */
154#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
155#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
156#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
157#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03
158
159/* Message Type (MT) */
160#define NCI_MT_DATA_PKT 0x00
161#define NCI_MT_CMD_PKT 0x01
162#define NCI_MT_RSP_PKT 0x02
163#define NCI_MT_NTF_PKT 0x03
164
165#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
166#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
167
168/* Packet Boundary Flag (PBF) */
169#define NCI_PBF_LAST 0x00
170#define NCI_PBF_CONT 0x01
171
172#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
173#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
174
175/* Control Opcode manipulation */
176#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
177 ((__u16)((oid)&0x3f)))
178#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
179#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
180#define nci_opcode_oid(op) (__u8)((op)&0x003f)
181
182/* Payload Length */
183#define nci_plen(hdr) (__u8)((hdr)[2])
184
185/* Connection ID */
186#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
187
188/* GID values */
189#define NCI_GID_CORE 0x0
190#define NCI_GID_RF_MGMT 0x1
191#define NCI_GID_NFCEE_MGMT 0x2
192#define NCI_GID_PROPRIETARY 0xf
193
194/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */
195#define NCI_SPI_HDR_LEN 4
196#define NCI_SPI_CRC_LEN 2
197
198/* ---- NCI Packet structures ---- */
199#define NCI_CTRL_HDR_SIZE 3
200#define NCI_DATA_HDR_SIZE 3
201
202struct nci_ctrl_hdr {
203 __u8 gid; /* MT & PBF & GID */
204 __u8 oid;
205 __u8 plen;
206} __packed;
207
208struct nci_data_hdr {
209 __u8 conn_id; /* MT & PBF & ConnID */
210 __u8 rfu;
211 __u8 plen;
212} __packed;
213
214/* ------------------------ */
215/* ----- NCI Commands ---- */
216/* ------------------------ */
217#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
218struct nci_core_reset_cmd {
219 __u8 reset_type;
220} __packed;
221
222#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
223
224#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
225struct set_config_param {
226 __u8 id;
227 __u8 len;
228 __u8 val[NCI_MAX_PARAM_LEN];
229} __packed;
230
231struct nci_core_set_config_cmd {
232 __u8 num_params;
233 struct set_config_param param; /* support 1 param per cmd is enough */
234} __packed;
235
236#define NCI_OP_CORE_CONN_CREATE_CMD nci_opcode_pack(NCI_GID_CORE, 0x04)
237#define DEST_SPEC_PARAMS_ID_INDEX 0
238#define DEST_SPEC_PARAMS_PROTOCOL_INDEX 1
239struct dest_spec_params {
240 __u8 id;
241 __u8 protocol;
242} __packed;
243
244struct core_conn_create_dest_spec_params {
245 __u8 type;
246 __u8 length;
247 __u8 value[];
248} __packed;
249
250struct nci_core_conn_create_cmd {
251 __u8 destination_type;
252 __u8 number_destination_params;
253 struct core_conn_create_dest_spec_params params[];
254} __packed;
255
256#define NCI_OP_CORE_CONN_CLOSE_CMD nci_opcode_pack(NCI_GID_CORE, 0x05)
257
258#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
259struct disc_map_config {
260 __u8 rf_protocol;
261 __u8 mode;
262 __u8 rf_interface;
263} __packed;
264
265struct nci_rf_disc_map_cmd {
266 __u8 num_mapping_configs;
267 struct disc_map_config mapping_configs
268 [NCI_MAX_NUM_MAPPING_CONFIGS];
269} __packed;
270
271#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
272struct disc_config {
273 __u8 rf_tech_and_mode;
274 __u8 frequency;
275} __packed;
276
277struct nci_rf_disc_cmd {
278 __u8 num_disc_configs;
279 struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
280} __packed;
281
282#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
283struct nci_rf_discover_select_cmd {
284 __u8 rf_discovery_id;
285 __u8 rf_protocol;
286 __u8 rf_interface;
287} __packed;
288
289#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
290struct nci_rf_deactivate_cmd {
291 __u8 type;
292} __packed;
293
294#define NCI_OP_NFCEE_DISCOVER_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
295struct nci_nfcee_discover_cmd {
296 __u8 discovery_action;
297} __packed;
298
299#define NCI_OP_NFCEE_MODE_SET_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
300#define NCI_NFCEE_DISABLE 0x00
301#define NCI_NFCEE_ENABLE 0x01
302struct nci_nfcee_mode_set_cmd {
303 __u8 nfcee_id;
304 __u8 nfcee_mode;
305} __packed;
306
307#define NCI_OP_CORE_GET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x03)
308
309/* ----------------------- */
310/* ---- NCI Responses ---- */
311/* ----------------------- */
312#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
313struct nci_core_reset_rsp {
314 __u8 status;
315 __u8 nci_ver;
316 __u8 config_status;
317} __packed;
318
319#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
320struct nci_core_init_rsp_1 {
321 __u8 status;
322 __le32 nfcc_features;
323 __u8 num_supported_rf_interfaces;
324 __u8 supported_rf_interfaces[]; /* variable size array */
325 /* continuted in nci_core_init_rsp_2 */
326} __packed;
327
328struct nci_core_init_rsp_2 {
329 __u8 max_logical_connections;
330 __le16 max_routing_table_size;
331 __u8 max_ctrl_pkt_payload_len;
332 __le16 max_size_for_large_params;
333 __u8 manufact_id;
334 __le32 manufact_specific_info;
335} __packed;
336
337#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
338struct nci_core_set_config_rsp {
339 __u8 status;
340 __u8 num_params;
341 __u8 params_id[]; /* variable size array */
342} __packed;
343
344#define NCI_OP_CORE_CONN_CREATE_RSP nci_opcode_pack(NCI_GID_CORE, 0x04)
345struct nci_core_conn_create_rsp {
346 __u8 status;
347 __u8 max_ctrl_pkt_payload_len;
348 __u8 credits_cnt;
349 __u8 conn_id;
350} __packed;
351
352#define NCI_OP_CORE_CONN_CLOSE_RSP nci_opcode_pack(NCI_GID_CORE, 0x05)
353
354#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
355
356#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
357
358#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
359
360#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
361
362#define NCI_OP_NFCEE_DISCOVER_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
363struct nci_nfcee_discover_rsp {
364 __u8 status;
365 __u8 num_nfcee;
366} __packed;
367
368#define NCI_OP_NFCEE_MODE_SET_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
369
370#define NCI_OP_CORE_GET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x03)
371
372/* --------------------------- */
373/* ---- NCI Notifications ---- */
374/* --------------------------- */
375#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
376struct conn_credit_entry {
377 __u8 conn_id;
378 __u8 credits;
379} __packed;
380
381struct nci_core_conn_credit_ntf {
382 __u8 num_entries;
383 struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
384} __packed;
385
386#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
387
388#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
389struct nci_core_intf_error_ntf {
390 __u8 status;
391 __u8 conn_id;
392} __packed;
393
394#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
395struct rf_tech_specific_params_nfca_poll {
396 __u16 sens_res;
397 __u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
398 __u8 nfcid1[NFC_NFCID1_MAXSIZE];
399 __u8 sel_res_len; /* 0 or 1 Bytes */
400 __u8 sel_res;
401} __packed;
402
403struct rf_tech_specific_params_nfcb_poll {
404 __u8 sensb_res_len;
405 __u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; /* 11 or 12 Bytes */
406} __packed;
407
408struct rf_tech_specific_params_nfcf_poll {
409 __u8 bit_rate;
410 __u8 sensf_res_len;
411 __u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; /* 16 or 18 Bytes */
412} __packed;
413
414struct rf_tech_specific_params_nfcv_poll {
415 __u8 res_flags;
416 __u8 dsfid;
417 __u8 uid[NFC_ISO15693_UID_MAXSIZE]; /* 8 Bytes */
418} __packed;
419
420struct rf_tech_specific_params_nfcf_listen {
421 __u8 local_nfcid2_len;
422 __u8 local_nfcid2[NFC_NFCID2_MAXSIZE]; /* 0 or 8 Bytes */
423} __packed;
424
425struct nci_rf_discover_ntf {
426 __u8 rf_discovery_id;
427 __u8 rf_protocol;
428 __u8 rf_tech_and_mode;
429 __u8 rf_tech_specific_params_len;
430
431 union {
432 struct rf_tech_specific_params_nfca_poll nfca_poll;
433 struct rf_tech_specific_params_nfcb_poll nfcb_poll;
434 struct rf_tech_specific_params_nfcf_poll nfcf_poll;
435 struct rf_tech_specific_params_nfcv_poll nfcv_poll;
436 } rf_tech_specific_params;
437
438 __u8 ntf_type;
439} __packed;
440
441#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
442struct activation_params_nfca_poll_iso_dep {
443 __u8 rats_res_len;
444 __u8 rats_res[20];
445};
446
447struct activation_params_nfcb_poll_iso_dep {
448 __u8 attrib_res_len;
449 __u8 attrib_res[50];
450};
451
452struct activation_params_poll_nfc_dep {
453 __u8 atr_res_len;
454 __u8 atr_res[NFC_ATR_RES_MAXSIZE - 2]; /* ATR_RES from byte 3 */
455};
456
457struct activation_params_listen_nfc_dep {
458 __u8 atr_req_len;
459 __u8 atr_req[NFC_ATR_REQ_MAXSIZE - 2]; /* ATR_REQ from byte 3 */
460};
461
462struct nci_rf_intf_activated_ntf {
463 __u8 rf_discovery_id;
464 __u8 rf_interface;
465 __u8 rf_protocol;
466 __u8 activation_rf_tech_and_mode;
467 __u8 max_data_pkt_payload_size;
468 __u8 initial_num_credits;
469 __u8 rf_tech_specific_params_len;
470
471 union {
472 struct rf_tech_specific_params_nfca_poll nfca_poll;
473 struct rf_tech_specific_params_nfcb_poll nfcb_poll;
474 struct rf_tech_specific_params_nfcf_poll nfcf_poll;
475 struct rf_tech_specific_params_nfcv_poll nfcv_poll;
476 struct rf_tech_specific_params_nfcf_listen nfcf_listen;
477 } rf_tech_specific_params;
478
479 __u8 data_exch_rf_tech_and_mode;
480 __u8 data_exch_tx_bit_rate;
481 __u8 data_exch_rx_bit_rate;
482 __u8 activation_params_len;
483
484 union {
485 struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
486 struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
487 struct activation_params_poll_nfc_dep poll_nfc_dep;
488 struct activation_params_listen_nfc_dep listen_nfc_dep;
489 } activation_params;
490
491} __packed;
492
493#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
494struct nci_rf_deactivate_ntf {
495 __u8 type;
496 __u8 reason;
497} __packed;
498
499#define NCI_OP_RF_NFCEE_ACTION_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x09)
500struct nci_rf_nfcee_action_ntf {
501 __u8 nfcee_id;
502 __u8 trigger;
503 __u8 supported_data_length;
504 __u8 supported_data[];
505} __packed;
506
507#define NCI_OP_NFCEE_DISCOVER_NTF nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
508struct nci_nfcee_supported_protocol {
509 __u8 num_protocol;
510 __u8 supported_protocol[];
511} __packed;
512
513struct nci_nfcee_information_tlv {
514 __u8 num_tlv;
515 __u8 information_tlv[];
516} __packed;
517
518struct nci_nfcee_discover_ntf {
519 __u8 nfcee_id;
520 __u8 nfcee_status;
521 struct nci_nfcee_supported_protocol supported_protocols;
522 struct nci_nfcee_information_tlv information_tlv;
523} __packed;
524
525#define NCI_OP_CORE_RESET_NTF nci_opcode_pack(NCI_GID_CORE, 0x00)
526
527#endif /* __NCI_H */