Commit | Line | Data |
---|---|---|
59ee2361 TE |
1 | /* |
2 | * NFC Digital Protocol stack | |
3 | * Copyright (c) 2013, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | */ | |
15 | ||
c5da0e4a SO |
16 | #define pr_fmt(fmt) "digital: %s: " fmt, __func__ |
17 | ||
59ee2361 TE |
18 | #include "digital.h" |
19 | ||
20 | #define DIGITAL_CMD_SENS_REQ 0x26 | |
21 | #define DIGITAL_CMD_ALL_REQ 0x52 | |
22 | #define DIGITAL_CMD_SEL_REQ_CL1 0x93 | |
23 | #define DIGITAL_CMD_SEL_REQ_CL2 0x95 | |
24 | #define DIGITAL_CMD_SEL_REQ_CL3 0x97 | |
25 | ||
26 | #define DIGITAL_SDD_REQ_SEL_PAR 0x20 | |
27 | ||
28 | #define DIGITAL_SDD_RES_CT 0x88 | |
29 | #define DIGITAL_SDD_RES_LEN 5 | |
30 | ||
2c66daec TE |
31 | #define DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res) (!((sel_res) & 0x04)) |
32 | #define DIGITAL_SEL_RES_IS_T2T(sel_res) (!((sel_res) & 0x60)) | |
12e3d241 | 33 | #define DIGITAL_SEL_RES_IS_T4T(sel_res) ((sel_res) & 0x20) |
7d0911c0 | 34 | #define DIGITAL_SEL_RES_IS_NFC_DEP(sel_res) ((sel_res) & 0x40) |
2c66daec | 35 | |
13292c9a | 36 | #define DIGITAL_SENS_RES_IS_T1T(sens_res) (((sens_res) & 0x0C00) == 0x0C00) |
2c66daec | 37 | #define DIGITAL_SENS_RES_IS_VALID(sens_res) \ |
13292c9a TE |
38 | ((!((sens_res) & 0x001F) && (((sens_res) & 0x0C00) == 0x0C00)) || \ |
39 | (((sens_res) & 0x001F) && ((sens_res) & 0x0C00) != 0x0C00)) | |
2c66daec TE |
40 | |
41 | #define DIGITAL_MIFARE_READ_RES_LEN 16 | |
42 | #define DIGITAL_MIFARE_ACK_RES 0x0A | |
43 | ||
24734607 MG |
44 | #define DIGITAL_CMD_SENSB_REQ 0x05 |
45 | #define DIGITAL_SENSB_ADVANCED BIT(5) | |
46 | #define DIGITAL_SENSB_EXTENDED BIT(4) | |
47 | #define DIGITAL_SENSB_ALLB_REQ BIT(3) | |
48 | #define DIGITAL_SENSB_N(n) ((n) & 0x7) | |
49 | ||
50 | #define DIGITAL_CMD_SENSB_RES 0x50 | |
51 | ||
52 | #define DIGITAL_CMD_ATTRIB_REQ 0x1D | |
53 | #define DIGITAL_ATTRIB_P1_TR0_DEFAULT (0x0 << 6) | |
54 | #define DIGITAL_ATTRIB_P1_TR1_DEFAULT (0x0 << 4) | |
55 | #define DIGITAL_ATTRIB_P1_SUPRESS_EOS BIT(3) | |
56 | #define DIGITAL_ATTRIB_P1_SUPRESS_SOS BIT(2) | |
57 | #define DIGITAL_ATTRIB_P2_LISTEN_POLL_1 (0x0 << 6) | |
58 | #define DIGITAL_ATTRIB_P2_POLL_LISTEN_1 (0x0 << 4) | |
59 | #define DIGITAL_ATTRIB_P2_MAX_FRAME_256 0x8 | |
60 | #define DIGITAL_ATTRIB_P4_DID(n) ((n) & 0xf) | |
61 | ||
8c0695e4 TE |
62 | #define DIGITAL_CMD_SENSF_REQ 0x00 |
63 | #define DIGITAL_CMD_SENSF_RES 0x01 | |
64 | ||
65 | #define DIGITAL_SENSF_RES_MIN_LENGTH 17 | |
66 | #define DIGITAL_SENSF_RES_RD_AP_B1 0x00 | |
67 | #define DIGITAL_SENSF_RES_RD_AP_B2 0x8F | |
68 | ||
69 | #define DIGITAL_SENSF_REQ_RC_NONE 0 | |
70 | #define DIGITAL_SENSF_REQ_RC_SC 1 | |
71 | #define DIGITAL_SENSF_REQ_RC_AP 2 | |
72 | ||
a381d482 MG |
73 | #define DIGITAL_CMD_ISO15693_INVENTORY_REQ 0x01 |
74 | ||
75 | #define DIGITAL_ISO15693_REQ_FLAG_DATA_RATE BIT(1) | |
76 | #define DIGITAL_ISO15693_REQ_FLAG_INVENTORY BIT(2) | |
77 | #define DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS BIT(5) | |
78 | #define DIGITAL_ISO15693_RES_FLAG_ERROR BIT(0) | |
79 | #define DIGITAL_ISO15693_RES_IS_VALID(flags) \ | |
80 | (!((flags) & DIGITAL_ISO15693_RES_FLAG_ERROR)) | |
81 | ||
c813007f TE |
82 | #define DIGITAL_ISO_DEP_I_PCB 0x02 |
83 | #define DIGITAL_ISO_DEP_PNI(pni) ((pni) & 0x01) | |
84 | ||
85 | #define DIGITAL_ISO_DEP_PCB_TYPE(pcb) ((pcb) & 0xC0) | |
86 | ||
87 | #define DIGITAL_ISO_DEP_I_BLOCK 0x00 | |
88 | ||
89 | #define DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb) ((pcb) & 0x08) | |
90 | ||
12e3d241 TE |
91 | static const u8 digital_ats_fsc[] = { |
92 | 16, 24, 32, 40, 48, 64, 96, 128, | |
93 | }; | |
94 | ||
95 | #define DIGITAL_ATS_FSCI(t0) ((t0) & 0x0F) | |
24734607 | 96 | #define DIGITAL_SENSB_FSCI(pi2) (((pi2) & 0xF0) >> 4) |
12e3d241 TE |
97 | #define DIGITAL_ATS_MAX_FSC 256 |
98 | ||
99 | #define DIGITAL_RATS_BYTE1 0xE0 | |
100 | #define DIGITAL_RATS_PARAM 0x80 | |
101 | ||
2c66daec TE |
102 | struct digital_sdd_res { |
103 | u8 nfcid1[4]; | |
104 | u8 bcc; | |
105 | } __packed; | |
106 | ||
107 | struct digital_sel_req { | |
108 | u8 sel_cmd; | |
109 | u8 b2; | |
110 | u8 nfcid1[4]; | |
111 | u8 bcc; | |
112 | } __packed; | |
113 | ||
24734607 MG |
114 | struct digital_sensb_req { |
115 | u8 cmd; | |
116 | u8 afi; | |
117 | u8 param; | |
118 | } __packed; | |
119 | ||
120 | struct digital_sensb_res { | |
121 | u8 cmd; | |
122 | u8 nfcid0[4]; | |
123 | u8 app_data[4]; | |
124 | u8 proto_info[3]; | |
125 | } __packed; | |
126 | ||
127 | struct digital_attrib_req { | |
128 | u8 cmd; | |
129 | u8 nfcid0[4]; | |
130 | u8 param1; | |
131 | u8 param2; | |
132 | u8 param3; | |
133 | u8 param4; | |
134 | } __packed; | |
135 | ||
136 | struct digital_attrib_res { | |
137 | u8 mbli_did; | |
138 | } __packed; | |
139 | ||
8c0695e4 TE |
140 | struct digital_sensf_req { |
141 | u8 cmd; | |
142 | u8 sc1; | |
143 | u8 sc2; | |
144 | u8 rc; | |
145 | u8 tsn; | |
146 | } __packed; | |
147 | ||
148 | struct digital_sensf_res { | |
149 | u8 cmd; | |
150 | u8 nfcid2[8]; | |
151 | u8 pad0[2]; | |
152 | u8 pad1[3]; | |
153 | u8 mrti_check; | |
154 | u8 mrti_update; | |
155 | u8 pad2; | |
156 | u8 rd[2]; | |
157 | } __packed; | |
158 | ||
a381d482 MG |
159 | struct digital_iso15693_inv_req { |
160 | u8 flags; | |
161 | u8 cmd; | |
162 | u8 mask_len; | |
163 | u64 mask; | |
164 | } __packed; | |
165 | ||
166 | struct digital_iso15693_inv_res { | |
167 | u8 flags; | |
168 | u8 dsfid; | |
169 | u64 uid; | |
170 | } __packed; | |
171 | ||
2c66daec TE |
172 | static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev, |
173 | struct nfc_target *target); | |
174 | ||
c813007f TE |
175 | int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev, |
176 | struct sk_buff *skb) | |
177 | { | |
178 | u8 pcb; | |
179 | u8 block_type; | |
180 | ||
181 | if (skb->len < 1) | |
182 | return -EIO; | |
183 | ||
184 | pcb = *skb->data; | |
185 | block_type = DIGITAL_ISO_DEP_PCB_TYPE(pcb); | |
186 | ||
187 | /* No support fo R-block nor S-block */ | |
188 | if (block_type != DIGITAL_ISO_DEP_I_BLOCK) { | |
189 | pr_err("ISO_DEP R-block and S-block not supported\n"); | |
190 | return -EIO; | |
191 | } | |
192 | ||
193 | if (DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb)) { | |
194 | pr_err("DID field in ISO_DEP PCB not supported\n"); | |
195 | return -EIO; | |
196 | } | |
197 | ||
198 | skb_pull(skb, 1); | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev, | |
204 | struct sk_buff *skb) | |
205 | { | |
206 | /* | |
207 | * Chaining not supported so skb->len + 1 PCB byte + 2 CRC bytes must | |
208 | * not be greater than remote FSC | |
209 | */ | |
210 | if (skb->len + 3 > ddev->target_fsc) | |
211 | return -EIO; | |
212 | ||
213 | skb_push(skb, 1); | |
214 | ||
215 | *skb->data = DIGITAL_ISO_DEP_I_PCB | ddev->curr_nfc_dep_pni; | |
216 | ||
217 | ddev->curr_nfc_dep_pni = | |
218 | DIGITAL_ISO_DEP_PNI(ddev->curr_nfc_dep_pni + 1); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
12e3d241 TE |
223 | static void digital_in_recv_ats(struct nfc_digital_dev *ddev, void *arg, |
224 | struct sk_buff *resp) | |
225 | { | |
226 | struct nfc_target *target = arg; | |
227 | u8 fsdi; | |
228 | int rc; | |
229 | ||
230 | if (IS_ERR(resp)) { | |
231 | rc = PTR_ERR(resp); | |
232 | resp = NULL; | |
233 | goto exit; | |
234 | } | |
235 | ||
236 | if (resp->len < 2) { | |
237 | rc = -EIO; | |
238 | goto exit; | |
239 | } | |
240 | ||
241 | fsdi = DIGITAL_ATS_FSCI(resp->data[1]); | |
242 | if (fsdi >= 8) | |
243 | ddev->target_fsc = DIGITAL_ATS_MAX_FSC; | |
244 | else | |
245 | ddev->target_fsc = digital_ats_fsc[fsdi]; | |
246 | ||
247 | ddev->curr_nfc_dep_pni = 0; | |
248 | ||
249 | rc = digital_target_found(ddev, target, NFC_PROTO_ISO14443); | |
250 | ||
251 | exit: | |
252 | dev_kfree_skb(resp); | |
253 | kfree(target); | |
254 | ||
255 | if (rc) | |
256 | digital_poll_next_tech(ddev); | |
257 | } | |
258 | ||
259 | static int digital_in_send_rats(struct nfc_digital_dev *ddev, | |
260 | struct nfc_target *target) | |
261 | { | |
262 | int rc; | |
263 | struct sk_buff *skb; | |
264 | ||
265 | skb = digital_skb_alloc(ddev, 2); | |
266 | if (!skb) | |
267 | return -ENOMEM; | |
268 | ||
269 | *skb_put(skb, 1) = DIGITAL_RATS_BYTE1; | |
270 | *skb_put(skb, 1) = DIGITAL_RATS_PARAM; | |
271 | ||
272 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_ats, | |
273 | target); | |
274 | if (rc) | |
275 | kfree_skb(skb); | |
276 | ||
277 | return rc; | |
278 | } | |
279 | ||
2c66daec TE |
280 | static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg, |
281 | struct sk_buff *resp) | |
282 | { | |
283 | struct nfc_target *target = arg; | |
284 | int rc; | |
285 | u8 sel_res; | |
286 | u8 nfc_proto; | |
287 | ||
288 | if (IS_ERR(resp)) { | |
289 | rc = PTR_ERR(resp); | |
290 | resp = NULL; | |
291 | goto exit; | |
292 | } | |
293 | ||
294 | if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) { | |
295 | rc = digital_skb_check_crc_a(resp); | |
296 | if (rc) { | |
297 | PROTOCOL_ERR("4.4.1.3"); | |
298 | goto exit; | |
299 | } | |
300 | } | |
301 | ||
302 | if (!resp->len) { | |
303 | rc = -EIO; | |
304 | goto exit; | |
305 | } | |
306 | ||
307 | sel_res = resp->data[0]; | |
308 | ||
309 | if (!DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res)) { | |
310 | rc = digital_in_send_sdd_req(ddev, target); | |
311 | if (rc) | |
312 | goto exit; | |
313 | ||
314 | goto exit_free_skb; | |
315 | } | |
316 | ||
12e3d241 TE |
317 | target->sel_res = sel_res; |
318 | ||
2c66daec TE |
319 | if (DIGITAL_SEL_RES_IS_T2T(sel_res)) { |
320 | nfc_proto = NFC_PROTO_MIFARE; | |
4b4dbca5 MG |
321 | } else if (DIGITAL_SEL_RES_IS_NFC_DEP(sel_res)) { |
322 | nfc_proto = NFC_PROTO_NFC_DEP; | |
12e3d241 TE |
323 | } else if (DIGITAL_SEL_RES_IS_T4T(sel_res)) { |
324 | rc = digital_in_send_rats(ddev, target); | |
325 | if (rc) | |
326 | goto exit; | |
327 | /* | |
328 | * Skip target_found and don't free it for now. This will be | |
329 | * done when receiving the ATS | |
330 | */ | |
331 | goto exit_free_skb; | |
2c66daec TE |
332 | } else { |
333 | rc = -EOPNOTSUPP; | |
334 | goto exit; | |
335 | } | |
336 | ||
2c66daec TE |
337 | rc = digital_target_found(ddev, target, nfc_proto); |
338 | ||
339 | exit: | |
340 | kfree(target); | |
341 | ||
342 | exit_free_skb: | |
343 | dev_kfree_skb(resp); | |
344 | ||
345 | if (rc) | |
346 | digital_poll_next_tech(ddev); | |
347 | } | |
348 | ||
349 | static int digital_in_send_sel_req(struct nfc_digital_dev *ddev, | |
350 | struct nfc_target *target, | |
351 | struct digital_sdd_res *sdd_res) | |
352 | { | |
353 | struct sk_buff *skb; | |
354 | struct digital_sel_req *sel_req; | |
355 | u8 sel_cmd; | |
356 | int rc; | |
357 | ||
358 | skb = digital_skb_alloc(ddev, sizeof(struct digital_sel_req)); | |
359 | if (!skb) | |
360 | return -ENOMEM; | |
361 | ||
362 | skb_put(skb, sizeof(struct digital_sel_req)); | |
363 | sel_req = (struct digital_sel_req *)skb->data; | |
364 | ||
365 | if (target->nfcid1_len <= 4) | |
366 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL1; | |
367 | else if (target->nfcid1_len < 10) | |
368 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL2; | |
369 | else | |
370 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL3; | |
371 | ||
372 | sel_req->sel_cmd = sel_cmd; | |
373 | sel_req->b2 = 0x70; | |
374 | memcpy(sel_req->nfcid1, sdd_res->nfcid1, 4); | |
375 | sel_req->bcc = sdd_res->bcc; | |
376 | ||
377 | if (DIGITAL_DRV_CAPS_IN_CRC(ddev)) { | |
378 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
379 | NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A); | |
380 | if (rc) | |
381 | goto exit; | |
382 | } else { | |
383 | digital_skb_add_crc_a(skb); | |
384 | } | |
385 | ||
386 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sel_res, | |
387 | target); | |
388 | exit: | |
389 | if (rc) | |
390 | kfree_skb(skb); | |
391 | ||
392 | return rc; | |
393 | } | |
394 | ||
395 | static void digital_in_recv_sdd_res(struct nfc_digital_dev *ddev, void *arg, | |
396 | struct sk_buff *resp) | |
397 | { | |
398 | struct nfc_target *target = arg; | |
399 | struct digital_sdd_res *sdd_res; | |
400 | int rc; | |
401 | u8 offset, size; | |
402 | u8 i, bcc; | |
403 | ||
404 | if (IS_ERR(resp)) { | |
405 | rc = PTR_ERR(resp); | |
406 | resp = NULL; | |
407 | goto exit; | |
408 | } | |
409 | ||
410 | if (resp->len < DIGITAL_SDD_RES_LEN) { | |
411 | PROTOCOL_ERR("4.7.2.8"); | |
412 | rc = -EINVAL; | |
413 | goto exit; | |
414 | } | |
415 | ||
416 | sdd_res = (struct digital_sdd_res *)resp->data; | |
417 | ||
418 | for (i = 0, bcc = 0; i < 4; i++) | |
419 | bcc ^= sdd_res->nfcid1[i]; | |
420 | ||
421 | if (bcc != sdd_res->bcc) { | |
422 | PROTOCOL_ERR("4.7.2.6"); | |
423 | rc = -EINVAL; | |
424 | goto exit; | |
425 | } | |
426 | ||
427 | if (sdd_res->nfcid1[0] == DIGITAL_SDD_RES_CT) { | |
428 | offset = 1; | |
429 | size = 3; | |
430 | } else { | |
431 | offset = 0; | |
432 | size = 4; | |
433 | } | |
434 | ||
435 | memcpy(target->nfcid1 + target->nfcid1_len, sdd_res->nfcid1 + offset, | |
436 | size); | |
437 | target->nfcid1_len += size; | |
438 | ||
439 | rc = digital_in_send_sel_req(ddev, target, sdd_res); | |
440 | ||
441 | exit: | |
442 | dev_kfree_skb(resp); | |
443 | ||
444 | if (rc) { | |
445 | kfree(target); | |
446 | digital_poll_next_tech(ddev); | |
447 | } | |
448 | } | |
449 | ||
450 | static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev, | |
451 | struct nfc_target *target) | |
452 | { | |
453 | int rc; | |
454 | struct sk_buff *skb; | |
455 | u8 sel_cmd; | |
456 | ||
457 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
458 | NFC_DIGITAL_FRAMING_NFCA_STANDARD); | |
459 | if (rc) | |
460 | return rc; | |
461 | ||
462 | skb = digital_skb_alloc(ddev, 2); | |
26042530 | 463 | if (!skb) |
2c66daec | 464 | return -ENOMEM; |
2c66daec TE |
465 | |
466 | if (target->nfcid1_len == 0) | |
467 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL1; | |
468 | else if (target->nfcid1_len == 3) | |
469 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL2; | |
470 | else | |
471 | sel_cmd = DIGITAL_CMD_SEL_REQ_CL3; | |
472 | ||
473 | *skb_put(skb, sizeof(u8)) = sel_cmd; | |
474 | *skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR; | |
475 | ||
476 | return digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res, | |
477 | target); | |
478 | } | |
479 | ||
59ee2361 TE |
480 | static void digital_in_recv_sens_res(struct nfc_digital_dev *ddev, void *arg, |
481 | struct sk_buff *resp) | |
482 | { | |
2c66daec | 483 | struct nfc_target *target = NULL; |
2c66daec TE |
484 | int rc; |
485 | ||
486 | if (IS_ERR(resp)) { | |
487 | rc = PTR_ERR(resp); | |
488 | resp = NULL; | |
489 | goto exit; | |
490 | } | |
491 | ||
492 | if (resp->len < sizeof(u16)) { | |
493 | rc = -EIO; | |
494 | goto exit; | |
495 | } | |
496 | ||
497 | target = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); | |
498 | if (!target) { | |
499 | rc = -ENOMEM; | |
500 | goto exit; | |
501 | } | |
502 | ||
13292c9a | 503 | target->sens_res = __le16_to_cpu(*(__le16 *)resp->data); |
59ee2361 | 504 | |
13292c9a | 505 | if (!DIGITAL_SENS_RES_IS_VALID(target->sens_res)) { |
2c66daec TE |
506 | PROTOCOL_ERR("4.6.3.3"); |
507 | rc = -EINVAL; | |
508 | goto exit; | |
509 | } | |
510 | ||
13292c9a | 511 | if (DIGITAL_SENS_RES_IS_T1T(target->sens_res)) |
2c66daec TE |
512 | rc = digital_target_found(ddev, target, NFC_PROTO_JEWEL); |
513 | else | |
514 | rc = digital_in_send_sdd_req(ddev, target); | |
515 | ||
516 | exit: | |
517 | dev_kfree_skb(resp); | |
518 | ||
519 | if (rc) { | |
520 | kfree(target); | |
521 | digital_poll_next_tech(ddev); | |
522 | } | |
59ee2361 TE |
523 | } |
524 | ||
525 | int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
526 | { | |
527 | struct sk_buff *skb; | |
528 | int rc; | |
529 | ||
530 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
531 | NFC_DIGITAL_RF_TECH_106A); | |
532 | if (rc) | |
533 | return rc; | |
534 | ||
535 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
536 | NFC_DIGITAL_FRAMING_NFCA_SHORT); | |
537 | if (rc) | |
538 | return rc; | |
539 | ||
540 | skb = digital_skb_alloc(ddev, 1); | |
541 | if (!skb) | |
542 | return -ENOMEM; | |
543 | ||
544 | *skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ; | |
545 | ||
546 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sens_res, NULL); | |
547 | if (rc) | |
548 | kfree_skb(skb); | |
549 | ||
550 | return rc; | |
551 | } | |
2c66daec TE |
552 | |
553 | int digital_in_recv_mifare_res(struct sk_buff *resp) | |
554 | { | |
555 | /* Successful READ command response is 16 data bytes + 2 CRC bytes long. | |
556 | * Since the driver can't differentiate a ACK/NACK response from a valid | |
557 | * READ response, the CRC calculation must be handled at digital level | |
558 | * even if the driver supports it for this technology. | |
559 | */ | |
560 | if (resp->len == DIGITAL_MIFARE_READ_RES_LEN + DIGITAL_CRC_LEN) { | |
561 | if (digital_skb_check_crc_a(resp)) { | |
562 | PROTOCOL_ERR("9.4.1.2"); | |
563 | return -EIO; | |
564 | } | |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
569 | /* ACK response (i.e. successful WRITE). */ | |
570 | if (resp->len == 1 && resp->data[0] == DIGITAL_MIFARE_ACK_RES) { | |
571 | resp->data[0] = 0; | |
572 | return 0; | |
573 | } | |
574 | ||
575 | /* NACK and any other responses are treated as error. */ | |
576 | return -EIO; | |
577 | } | |
8c0695e4 | 578 | |
24734607 MG |
579 | static void digital_in_recv_attrib_res(struct nfc_digital_dev *ddev, void *arg, |
580 | struct sk_buff *resp) | |
581 | { | |
582 | struct nfc_target *target = arg; | |
583 | struct digital_attrib_res *attrib_res; | |
584 | int rc; | |
585 | ||
586 | if (IS_ERR(resp)) { | |
587 | rc = PTR_ERR(resp); | |
588 | resp = NULL; | |
589 | goto exit; | |
590 | } | |
591 | ||
592 | if (resp->len < sizeof(*attrib_res)) { | |
593 | PROTOCOL_ERR("12.6.2"); | |
594 | rc = -EIO; | |
595 | goto exit; | |
596 | } | |
597 | ||
598 | attrib_res = (struct digital_attrib_res *)resp->data; | |
599 | ||
600 | if (attrib_res->mbli_did & 0x0f) { | |
601 | PROTOCOL_ERR("12.6.2.1"); | |
602 | rc = -EIO; | |
603 | goto exit; | |
604 | } | |
605 | ||
606 | rc = digital_target_found(ddev, target, NFC_PROTO_ISO14443_B); | |
607 | ||
608 | exit: | |
609 | dev_kfree_skb(resp); | |
610 | kfree(target); | |
611 | ||
612 | if (rc) | |
613 | digital_poll_next_tech(ddev); | |
614 | } | |
615 | ||
cb30caf0 | 616 | static int digital_in_send_attrib_req(struct nfc_digital_dev *ddev, |
24734607 MG |
617 | struct nfc_target *target, |
618 | struct digital_sensb_res *sensb_res) | |
619 | { | |
620 | struct digital_attrib_req *attrib_req; | |
621 | struct sk_buff *skb; | |
622 | int rc; | |
623 | ||
624 | skb = digital_skb_alloc(ddev, sizeof(*attrib_req)); | |
625 | if (!skb) | |
626 | return -ENOMEM; | |
627 | ||
628 | attrib_req = (struct digital_attrib_req *)skb_put(skb, | |
629 | sizeof(*attrib_req)); | |
630 | ||
631 | attrib_req->cmd = DIGITAL_CMD_ATTRIB_REQ; | |
632 | memcpy(attrib_req->nfcid0, sensb_res->nfcid0, | |
633 | sizeof(attrib_req->nfcid0)); | |
634 | attrib_req->param1 = DIGITAL_ATTRIB_P1_TR0_DEFAULT | | |
635 | DIGITAL_ATTRIB_P1_TR1_DEFAULT; | |
636 | attrib_req->param2 = DIGITAL_ATTRIB_P2_LISTEN_POLL_1 | | |
637 | DIGITAL_ATTRIB_P2_POLL_LISTEN_1 | | |
638 | DIGITAL_ATTRIB_P2_MAX_FRAME_256; | |
639 | attrib_req->param3 = sensb_res->proto_info[1] & 0x07; | |
640 | attrib_req->param4 = DIGITAL_ATTRIB_P4_DID(0); | |
641 | ||
642 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_attrib_res, | |
643 | target); | |
644 | if (rc) | |
645 | kfree_skb(skb); | |
646 | ||
647 | return rc; | |
648 | } | |
649 | ||
650 | static void digital_in_recv_sensb_res(struct nfc_digital_dev *ddev, void *arg, | |
651 | struct sk_buff *resp) | |
652 | { | |
653 | struct nfc_target *target = NULL; | |
654 | struct digital_sensb_res *sensb_res; | |
655 | u8 fsci; | |
656 | int rc; | |
657 | ||
658 | if (IS_ERR(resp)) { | |
659 | rc = PTR_ERR(resp); | |
660 | resp = NULL; | |
661 | goto exit; | |
662 | } | |
663 | ||
664 | if (resp->len != sizeof(*sensb_res)) { | |
665 | PROTOCOL_ERR("5.6.2.1"); | |
666 | rc = -EIO; | |
667 | goto exit; | |
668 | } | |
669 | ||
670 | sensb_res = (struct digital_sensb_res *)resp->data; | |
671 | ||
672 | if (sensb_res->cmd != DIGITAL_CMD_SENSB_RES) { | |
673 | PROTOCOL_ERR("5.6.2"); | |
674 | rc = -EIO; | |
675 | goto exit; | |
676 | } | |
677 | ||
678 | if (!(sensb_res->proto_info[1] & BIT(0))) { | |
679 | PROTOCOL_ERR("5.6.2.12"); | |
680 | rc = -EIO; | |
681 | goto exit; | |
682 | } | |
683 | ||
684 | if (sensb_res->proto_info[1] & BIT(3)) { | |
685 | PROTOCOL_ERR("5.6.2.16"); | |
686 | rc = -EIO; | |
687 | goto exit; | |
688 | } | |
689 | ||
690 | fsci = DIGITAL_SENSB_FSCI(sensb_res->proto_info[1]); | |
691 | if (fsci >= 8) | |
692 | ddev->target_fsc = DIGITAL_ATS_MAX_FSC; | |
693 | else | |
694 | ddev->target_fsc = digital_ats_fsc[fsci]; | |
695 | ||
696 | target = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); | |
697 | if (!target) { | |
698 | rc = -ENOMEM; | |
699 | goto exit; | |
700 | } | |
701 | ||
702 | rc = digital_in_send_attrib_req(ddev, target, sensb_res); | |
703 | ||
704 | exit: | |
705 | dev_kfree_skb(resp); | |
706 | ||
707 | if (rc) { | |
708 | kfree(target); | |
709 | digital_poll_next_tech(ddev); | |
710 | } | |
711 | } | |
712 | ||
713 | int digital_in_send_sensb_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
714 | { | |
715 | struct digital_sensb_req *sensb_req; | |
716 | struct sk_buff *skb; | |
717 | int rc; | |
718 | ||
719 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
720 | NFC_DIGITAL_RF_TECH_106B); | |
721 | if (rc) | |
722 | return rc; | |
723 | ||
724 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
725 | NFC_DIGITAL_FRAMING_NFCB); | |
726 | if (rc) | |
727 | return rc; | |
728 | ||
729 | skb = digital_skb_alloc(ddev, sizeof(*sensb_req)); | |
730 | if (!skb) | |
731 | return -ENOMEM; | |
732 | ||
733 | sensb_req = (struct digital_sensb_req *)skb_put(skb, | |
734 | sizeof(*sensb_req)); | |
735 | ||
736 | sensb_req->cmd = DIGITAL_CMD_SENSB_REQ; | |
737 | sensb_req->afi = 0x00; /* All families and sub-families */ | |
738 | sensb_req->param = DIGITAL_SENSB_N(0); | |
739 | ||
740 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sensb_res, | |
741 | NULL); | |
742 | if (rc) | |
743 | kfree_skb(skb); | |
744 | ||
745 | return rc; | |
746 | } | |
747 | ||
8c0695e4 TE |
748 | static void digital_in_recv_sensf_res(struct nfc_digital_dev *ddev, void *arg, |
749 | struct sk_buff *resp) | |
750 | { | |
751 | int rc; | |
7d0911c0 | 752 | u8 proto; |
8c0695e4 TE |
753 | struct nfc_target target; |
754 | struct digital_sensf_res *sensf_res; | |
755 | ||
756 | if (IS_ERR(resp)) { | |
757 | rc = PTR_ERR(resp); | |
758 | resp = NULL; | |
759 | goto exit; | |
760 | } | |
761 | ||
762 | if (resp->len < DIGITAL_SENSF_RES_MIN_LENGTH) { | |
763 | rc = -EIO; | |
764 | goto exit; | |
765 | } | |
766 | ||
767 | if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) { | |
768 | rc = digital_skb_check_crc_f(resp); | |
769 | if (rc) { | |
770 | PROTOCOL_ERR("6.4.1.8"); | |
771 | goto exit; | |
772 | } | |
773 | } | |
774 | ||
775 | skb_pull(resp, 1); | |
776 | ||
777 | memset(&target, 0, sizeof(struct nfc_target)); | |
778 | ||
779 | sensf_res = (struct digital_sensf_res *)resp->data; | |
780 | ||
781 | memcpy(target.sensf_res, sensf_res, resp->len); | |
782 | target.sensf_res_len = resp->len; | |
783 | ||
784 | memcpy(target.nfcid2, sensf_res->nfcid2, NFC_NFCID2_MAXSIZE); | |
785 | target.nfcid2_len = NFC_NFCID2_MAXSIZE; | |
786 | ||
7d0911c0 TE |
787 | if (target.nfcid2[0] == DIGITAL_SENSF_NFCID2_NFC_DEP_B1 && |
788 | target.nfcid2[1] == DIGITAL_SENSF_NFCID2_NFC_DEP_B2) | |
789 | proto = NFC_PROTO_NFC_DEP; | |
790 | else | |
791 | proto = NFC_PROTO_FELICA; | |
792 | ||
793 | rc = digital_target_found(ddev, &target, proto); | |
8c0695e4 TE |
794 | |
795 | exit: | |
796 | dev_kfree_skb(resp); | |
797 | ||
798 | if (rc) | |
799 | digital_poll_next_tech(ddev); | |
800 | } | |
801 | ||
802 | int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
803 | { | |
804 | struct digital_sensf_req *sensf_req; | |
805 | struct sk_buff *skb; | |
806 | int rc; | |
807 | u8 size; | |
808 | ||
809 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); | |
810 | if (rc) | |
811 | return rc; | |
812 | ||
813 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
814 | NFC_DIGITAL_FRAMING_NFCF); | |
815 | if (rc) | |
816 | return rc; | |
817 | ||
818 | size = sizeof(struct digital_sensf_req); | |
819 | ||
820 | skb = digital_skb_alloc(ddev, size); | |
821 | if (!skb) | |
822 | return -ENOMEM; | |
823 | ||
824 | skb_put(skb, size); | |
825 | ||
826 | sensf_req = (struct digital_sensf_req *)skb->data; | |
827 | sensf_req->cmd = DIGITAL_CMD_SENSF_REQ; | |
828 | sensf_req->sc1 = 0xFF; | |
829 | sensf_req->sc2 = 0xFF; | |
830 | sensf_req->rc = 0; | |
831 | sensf_req->tsn = 0; | |
832 | ||
833 | *skb_push(skb, 1) = size + 1; | |
834 | ||
835 | if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) | |
836 | digital_skb_add_crc_f(skb); | |
837 | ||
838 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sensf_res, | |
839 | NULL); | |
840 | if (rc) | |
841 | kfree_skb(skb); | |
842 | ||
843 | return rc; | |
844 | } | |
1c7a4c24 | 845 | |
a381d482 MG |
846 | static void digital_in_recv_iso15693_inv_res(struct nfc_digital_dev *ddev, |
847 | void *arg, struct sk_buff *resp) | |
848 | { | |
849 | struct digital_iso15693_inv_res *res; | |
850 | struct nfc_target *target = NULL; | |
851 | int rc; | |
852 | ||
853 | if (IS_ERR(resp)) { | |
854 | rc = PTR_ERR(resp); | |
855 | resp = NULL; | |
856 | goto out_free_skb; | |
857 | } | |
858 | ||
859 | if (resp->len != sizeof(*res)) { | |
860 | rc = -EIO; | |
861 | goto out_free_skb; | |
862 | } | |
863 | ||
864 | res = (struct digital_iso15693_inv_res *)resp->data; | |
865 | ||
866 | if (!DIGITAL_ISO15693_RES_IS_VALID(res->flags)) { | |
867 | PROTOCOL_ERR("ISO15693 - 10.3.1"); | |
868 | rc = -EINVAL; | |
869 | goto out_free_skb; | |
870 | } | |
871 | ||
872 | target = kzalloc(sizeof(*target), GFP_KERNEL); | |
873 | if (!target) { | |
874 | rc = -ENOMEM; | |
875 | goto out_free_skb; | |
876 | } | |
877 | ||
878 | target->is_iso15693 = 1; | |
879 | target->iso15693_dsfid = res->dsfid; | |
880 | memcpy(target->iso15693_uid, &res->uid, sizeof(target->iso15693_uid)); | |
881 | ||
882 | rc = digital_target_found(ddev, target, NFC_PROTO_ISO15693); | |
883 | ||
884 | kfree(target); | |
885 | ||
886 | out_free_skb: | |
887 | dev_kfree_skb(resp); | |
888 | ||
889 | if (rc) | |
890 | digital_poll_next_tech(ddev); | |
891 | } | |
892 | ||
893 | int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
894 | { | |
895 | struct digital_iso15693_inv_req *req; | |
896 | struct sk_buff *skb; | |
897 | int rc; | |
898 | ||
899 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
900 | NFC_DIGITAL_RF_TECH_ISO15693); | |
901 | if (rc) | |
902 | return rc; | |
903 | ||
904 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
905 | NFC_DIGITAL_FRAMING_ISO15693_INVENTORY); | |
906 | if (rc) | |
907 | return rc; | |
908 | ||
909 | skb = digital_skb_alloc(ddev, sizeof(*req)); | |
910 | if (!skb) | |
911 | return -ENOMEM; | |
912 | ||
913 | skb_put(skb, sizeof(*req) - sizeof(req->mask)); /* No mask */ | |
914 | req = (struct digital_iso15693_inv_req *)skb->data; | |
915 | ||
916 | /* Single sub-carrier, high data rate, no AFI, single slot | |
917 | * Inventory command | |
918 | */ | |
919 | req->flags = DIGITAL_ISO15693_REQ_FLAG_DATA_RATE | | |
920 | DIGITAL_ISO15693_REQ_FLAG_INVENTORY | | |
921 | DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS; | |
922 | req->cmd = DIGITAL_CMD_ISO15693_INVENTORY_REQ; | |
923 | req->mask_len = 0; | |
924 | ||
925 | rc = digital_in_send_cmd(ddev, skb, 30, | |
926 | digital_in_recv_iso15693_inv_res, NULL); | |
927 | if (rc) | |
928 | kfree_skb(skb); | |
929 | ||
930 | return rc; | |
931 | } | |
932 | ||
1c7a4c24 TE |
933 | static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev) |
934 | { | |
935 | struct sk_buff *skb; | |
936 | int rc; | |
937 | ||
938 | skb = digital_skb_alloc(ddev, 1); | |
939 | if (!skb) | |
940 | return -ENOMEM; | |
941 | ||
942 | *skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP; | |
943 | ||
944 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) | |
945 | digital_skb_add_crc_a(skb); | |
946 | ||
55537c7e MG |
947 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
948 | NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE); | |
949 | if (rc) { | |
950 | kfree_skb(skb); | |
951 | return rc; | |
952 | } | |
953 | ||
1c7a4c24 TE |
954 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_atr_req, |
955 | NULL); | |
956 | if (rc) | |
957 | kfree_skb(skb); | |
958 | ||
959 | return rc; | |
960 | } | |
961 | ||
962 | static void digital_tg_recv_sel_req(struct nfc_digital_dev *ddev, void *arg, | |
963 | struct sk_buff *resp) | |
964 | { | |
965 | int rc; | |
966 | ||
967 | if (IS_ERR(resp)) { | |
968 | rc = PTR_ERR(resp); | |
969 | resp = NULL; | |
970 | goto exit; | |
971 | } | |
972 | ||
973 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { | |
974 | rc = digital_skb_check_crc_a(resp); | |
975 | if (rc) { | |
976 | PROTOCOL_ERR("4.4.1.3"); | |
977 | goto exit; | |
978 | } | |
979 | } | |
980 | ||
981 | /* Silently ignore SEL_REQ content and send a SEL_RES for NFC-DEP */ | |
982 | ||
983 | rc = digital_tg_send_sel_res(ddev); | |
984 | ||
985 | exit: | |
986 | if (rc) | |
987 | digital_poll_next_tech(ddev); | |
988 | ||
989 | dev_kfree_skb(resp); | |
990 | } | |
991 | ||
992 | static int digital_tg_send_sdd_res(struct nfc_digital_dev *ddev) | |
993 | { | |
994 | struct sk_buff *skb; | |
995 | struct digital_sdd_res *sdd_res; | |
996 | int rc, i; | |
997 | ||
998 | skb = digital_skb_alloc(ddev, sizeof(struct digital_sdd_res)); | |
999 | if (!skb) | |
1000 | return -ENOMEM; | |
1001 | ||
1002 | skb_put(skb, sizeof(struct digital_sdd_res)); | |
1003 | sdd_res = (struct digital_sdd_res *)skb->data; | |
1004 | ||
1005 | sdd_res->nfcid1[0] = 0x08; | |
1006 | get_random_bytes(sdd_res->nfcid1 + 1, 3); | |
1007 | ||
1008 | sdd_res->bcc = 0; | |
1009 | for (i = 0; i < 4; i++) | |
1010 | sdd_res->bcc ^= sdd_res->nfcid1[i]; | |
1011 | ||
55537c7e MG |
1012 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1013 | NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A); | |
1014 | if (rc) { | |
1015 | kfree_skb(skb); | |
1016 | return rc; | |
1017 | } | |
1018 | ||
1c7a4c24 TE |
1019 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sel_req, |
1020 | NULL); | |
1021 | if (rc) | |
1022 | kfree_skb(skb); | |
1023 | ||
1024 | return rc; | |
1025 | } | |
1026 | ||
1027 | static void digital_tg_recv_sdd_req(struct nfc_digital_dev *ddev, void *arg, | |
1028 | struct sk_buff *resp) | |
1029 | { | |
1030 | u8 *sdd_req; | |
1031 | int rc; | |
1032 | ||
1033 | if (IS_ERR(resp)) { | |
1034 | rc = PTR_ERR(resp); | |
1035 | resp = NULL; | |
1036 | goto exit; | |
1037 | } | |
1038 | ||
1039 | sdd_req = resp->data; | |
1040 | ||
1041 | if (resp->len < 2 || sdd_req[0] != DIGITAL_CMD_SEL_REQ_CL1 || | |
1042 | sdd_req[1] != DIGITAL_SDD_REQ_SEL_PAR) { | |
1043 | rc = -EINVAL; | |
1044 | goto exit; | |
1045 | } | |
1046 | ||
1047 | rc = digital_tg_send_sdd_res(ddev); | |
1048 | ||
1049 | exit: | |
1050 | if (rc) | |
1051 | digital_poll_next_tech(ddev); | |
1052 | ||
1053 | dev_kfree_skb(resp); | |
1054 | } | |
1055 | ||
1056 | static int digital_tg_send_sens_res(struct nfc_digital_dev *ddev) | |
1057 | { | |
1058 | struct sk_buff *skb; | |
1059 | u8 *sens_res; | |
1060 | int rc; | |
1061 | ||
1062 | skb = digital_skb_alloc(ddev, 2); | |
1063 | if (!skb) | |
1064 | return -ENOMEM; | |
1065 | ||
1066 | sens_res = skb_put(skb, 2); | |
1067 | ||
1068 | sens_res[0] = (DIGITAL_SENS_RES_NFC_DEP >> 8) & 0xFF; | |
1069 | sens_res[1] = DIGITAL_SENS_RES_NFC_DEP & 0xFF; | |
1070 | ||
55537c7e MG |
1071 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1072 | NFC_DIGITAL_FRAMING_NFCA_STANDARD); | |
1073 | if (rc) { | |
1074 | kfree_skb(skb); | |
1075 | return rc; | |
1076 | } | |
1077 | ||
1c7a4c24 TE |
1078 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sdd_req, |
1079 | NULL); | |
1080 | if (rc) | |
1081 | kfree_skb(skb); | |
1082 | ||
1083 | return rc; | |
1084 | } | |
1085 | ||
1086 | void digital_tg_recv_sens_req(struct nfc_digital_dev *ddev, void *arg, | |
1087 | struct sk_buff *resp) | |
1088 | { | |
1089 | u8 sens_req; | |
1090 | int rc; | |
1091 | ||
1092 | if (IS_ERR(resp)) { | |
1093 | rc = PTR_ERR(resp); | |
1094 | resp = NULL; | |
1095 | goto exit; | |
1096 | } | |
1097 | ||
1098 | sens_req = resp->data[0]; | |
1099 | ||
1100 | if (!resp->len || (sens_req != DIGITAL_CMD_SENS_REQ && | |
1101 | sens_req != DIGITAL_CMD_ALL_REQ)) { | |
1102 | rc = -EINVAL; | |
1103 | goto exit; | |
1104 | } | |
1105 | ||
1106 | rc = digital_tg_send_sens_res(ddev); | |
1107 | ||
1108 | exit: | |
1109 | if (rc) | |
1110 | digital_poll_next_tech(ddev); | |
1111 | ||
1112 | dev_kfree_skb(resp); | |
1113 | } | |
1114 | ||
4b8b6267 MG |
1115 | static void digital_tg_recv_atr_or_sensf_req(struct nfc_digital_dev *ddev, |
1116 | void *arg, struct sk_buff *resp) | |
1117 | { | |
1118 | if (!IS_ERR(resp) && (resp->len >= 2) && | |
1119 | (resp->data[1] == DIGITAL_CMD_SENSF_REQ)) | |
1120 | digital_tg_recv_sensf_req(ddev, arg, resp); | |
1121 | else | |
1122 | digital_tg_recv_atr_req(ddev, arg, resp); | |
1123 | ||
1124 | return; | |
1125 | } | |
1126 | ||
180106bd | 1127 | static int digital_tg_send_sensf_res(struct nfc_digital_dev *ddev, |
1c7a4c24 TE |
1128 | struct digital_sensf_req *sensf_req) |
1129 | { | |
1130 | struct sk_buff *skb; | |
1131 | u8 size; | |
1132 | int rc; | |
1133 | struct digital_sensf_res *sensf_res; | |
1134 | ||
1135 | size = sizeof(struct digital_sensf_res); | |
1136 | ||
96e829b4 | 1137 | if (sensf_req->rc == DIGITAL_SENSF_REQ_RC_NONE) |
1c7a4c24 TE |
1138 | size -= sizeof(sensf_res->rd); |
1139 | ||
1140 | skb = digital_skb_alloc(ddev, size); | |
1141 | if (!skb) | |
1142 | return -ENOMEM; | |
1143 | ||
1144 | skb_put(skb, size); | |
1145 | ||
1146 | sensf_res = (struct digital_sensf_res *)skb->data; | |
1147 | ||
1148 | memset(sensf_res, 0, size); | |
1149 | ||
1150 | sensf_res->cmd = DIGITAL_CMD_SENSF_RES; | |
1151 | sensf_res->nfcid2[0] = DIGITAL_SENSF_NFCID2_NFC_DEP_B1; | |
1152 | sensf_res->nfcid2[1] = DIGITAL_SENSF_NFCID2_NFC_DEP_B2; | |
1153 | get_random_bytes(&sensf_res->nfcid2[2], 6); | |
1154 | ||
1155 | switch (sensf_req->rc) { | |
1156 | case DIGITAL_SENSF_REQ_RC_SC: | |
1157 | sensf_res->rd[0] = sensf_req->sc1; | |
1158 | sensf_res->rd[1] = sensf_req->sc2; | |
1159 | break; | |
1160 | case DIGITAL_SENSF_REQ_RC_AP: | |
1161 | sensf_res->rd[0] = DIGITAL_SENSF_RES_RD_AP_B1; | |
1162 | sensf_res->rd[1] = DIGITAL_SENSF_RES_RD_AP_B2; | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | *skb_push(skb, sizeof(u8)) = size + 1; | |
1167 | ||
1168 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) | |
1169 | digital_skb_add_crc_f(skb); | |
1170 | ||
1171 | rc = digital_tg_send_cmd(ddev, skb, 300, | |
4b8b6267 | 1172 | digital_tg_recv_atr_or_sensf_req, NULL); |
1c7a4c24 TE |
1173 | if (rc) |
1174 | kfree_skb(skb); | |
1175 | ||
1176 | return rc; | |
1177 | } | |
1178 | ||
1179 | void digital_tg_recv_sensf_req(struct nfc_digital_dev *ddev, void *arg, | |
1180 | struct sk_buff *resp) | |
1181 | { | |
1182 | struct digital_sensf_req *sensf_req; | |
1183 | int rc; | |
1184 | ||
1185 | if (IS_ERR(resp)) { | |
1186 | rc = PTR_ERR(resp); | |
1187 | resp = NULL; | |
1188 | goto exit; | |
1189 | } | |
1190 | ||
1191 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { | |
1192 | rc = digital_skb_check_crc_f(resp); | |
1193 | if (rc) { | |
1194 | PROTOCOL_ERR("6.4.1.8"); | |
1195 | goto exit; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | if (resp->len != sizeof(struct digital_sensf_req) + 1) { | |
1200 | rc = -EINVAL; | |
1201 | goto exit; | |
1202 | } | |
1203 | ||
1204 | skb_pull(resp, 1); | |
1205 | sensf_req = (struct digital_sensf_req *)resp->data; | |
1206 | ||
1207 | if (sensf_req->cmd != DIGITAL_CMD_SENSF_REQ) { | |
1208 | rc = -EINVAL; | |
1209 | goto exit; | |
1210 | } | |
1211 | ||
1212 | rc = digital_tg_send_sensf_res(ddev, sensf_req); | |
1213 | ||
1214 | exit: | |
1215 | if (rc) | |
1216 | digital_poll_next_tech(ddev); | |
1217 | ||
1218 | dev_kfree_skb(resp); | |
1219 | } | |
1220 | ||
bf30a67c | 1221 | static int digital_tg_config_nfca(struct nfc_digital_dev *ddev) |
1c7a4c24 TE |
1222 | { |
1223 | int rc; | |
1224 | ||
bf30a67c MG |
1225 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, |
1226 | NFC_DIGITAL_RF_TECH_106A); | |
1c7a4c24 TE |
1227 | if (rc) |
1228 | return rc; | |
1229 | ||
bf30a67c MG |
1230 | return digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1231 | NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); | |
1232 | } | |
1233 | ||
1234 | int digital_tg_listen_nfca(struct nfc_digital_dev *ddev, u8 rf_tech) | |
1235 | { | |
1236 | int rc; | |
1237 | ||
1238 | rc = digital_tg_config_nfca(ddev); | |
1c7a4c24 TE |
1239 | if (rc) |
1240 | return rc; | |
1241 | ||
1242 | return digital_tg_listen(ddev, 300, digital_tg_recv_sens_req, NULL); | |
1243 | } | |
1244 | ||
bf30a67c | 1245 | static int digital_tg_config_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech) |
1c7a4c24 TE |
1246 | { |
1247 | int rc; | |
1c7a4c24 TE |
1248 | |
1249 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); | |
1250 | if (rc) | |
1251 | return rc; | |
1252 | ||
bf30a67c MG |
1253 | return digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1254 | NFC_DIGITAL_FRAMING_NFCF_NFC_DEP); | |
1255 | } | |
1256 | ||
1257 | int digital_tg_listen_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech) | |
1258 | { | |
1259 | int rc; | |
1260 | u8 *nfcid2; | |
1261 | ||
1262 | rc = digital_tg_config_nfcf(ddev, rf_tech); | |
1c7a4c24 TE |
1263 | if (rc) |
1264 | return rc; | |
1265 | ||
1266 | nfcid2 = kzalloc(NFC_NFCID2_MAXSIZE, GFP_KERNEL); | |
1267 | if (!nfcid2) | |
1268 | return -ENOMEM; | |
1269 | ||
1270 | nfcid2[0] = DIGITAL_SENSF_NFCID2_NFC_DEP_B1; | |
1271 | nfcid2[1] = DIGITAL_SENSF_NFCID2_NFC_DEP_B2; | |
1272 | get_random_bytes(nfcid2 + 2, NFC_NFCID2_MAXSIZE - 2); | |
1273 | ||
1274 | return digital_tg_listen(ddev, 300, digital_tg_recv_sensf_req, nfcid2); | |
1275 | } | |
bf30a67c MG |
1276 | |
1277 | void digital_tg_recv_md_req(struct nfc_digital_dev *ddev, void *arg, | |
1278 | struct sk_buff *resp) | |
1279 | { | |
1280 | u8 rf_tech; | |
1281 | int rc; | |
1282 | ||
1283 | if (IS_ERR(resp)) { | |
1284 | resp = NULL; | |
1285 | goto exit_free_skb; | |
1286 | } | |
1287 | ||
1288 | rc = ddev->ops->tg_get_rf_tech(ddev, &rf_tech); | |
1289 | if (rc) | |
1290 | goto exit_free_skb; | |
1291 | ||
1292 | switch (rf_tech) { | |
1293 | case NFC_DIGITAL_RF_TECH_106A: | |
1294 | rc = digital_tg_config_nfca(ddev); | |
1295 | if (rc) | |
1296 | goto exit_free_skb; | |
1297 | digital_tg_recv_sens_req(ddev, arg, resp); | |
1298 | break; | |
1299 | case NFC_DIGITAL_RF_TECH_212F: | |
1300 | case NFC_DIGITAL_RF_TECH_424F: | |
1301 | rc = digital_tg_config_nfcf(ddev, rf_tech); | |
1302 | if (rc) | |
1303 | goto exit_free_skb; | |
1304 | digital_tg_recv_sensf_req(ddev, arg, resp); | |
1305 | break; | |
1306 | default: | |
1307 | goto exit_free_skb; | |
1308 | } | |
1309 | ||
1310 | return; | |
1311 | ||
1312 | exit_free_skb: | |
1313 | digital_poll_next_tech(ddev); | |
1314 | dev_kfree_skb(resp); | |
1315 | } |