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Commit | Line | Data |
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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 | ||
4df864c1 JB |
269 | *(u8 *)skb_put(skb, 1) = DIGITAL_RATS_BYTE1; |
270 | *(u8 *)skb_put(skb, 1) = DIGITAL_RATS_PARAM; | |
12e3d241 TE |
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 | ||
4df864c1 JB |
473 | *(u8 *)skb_put(skb, sizeof(u8)) = sel_cmd; |
474 | *(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR; | |
2c66daec TE |
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 | ||
4df864c1 | 544 | *(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ; |
59ee2361 TE |
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 | ||
4df864c1 | 628 | attrib_req = skb_put(skb, sizeof(*attrib_req)); |
24734607 MG |
629 | |
630 | attrib_req->cmd = DIGITAL_CMD_ATTRIB_REQ; | |
631 | memcpy(attrib_req->nfcid0, sensb_res->nfcid0, | |
632 | sizeof(attrib_req->nfcid0)); | |
633 | attrib_req->param1 = DIGITAL_ATTRIB_P1_TR0_DEFAULT | | |
634 | DIGITAL_ATTRIB_P1_TR1_DEFAULT; | |
635 | attrib_req->param2 = DIGITAL_ATTRIB_P2_LISTEN_POLL_1 | | |
636 | DIGITAL_ATTRIB_P2_POLL_LISTEN_1 | | |
637 | DIGITAL_ATTRIB_P2_MAX_FRAME_256; | |
638 | attrib_req->param3 = sensb_res->proto_info[1] & 0x07; | |
639 | attrib_req->param4 = DIGITAL_ATTRIB_P4_DID(0); | |
640 | ||
641 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_attrib_res, | |
642 | target); | |
643 | if (rc) | |
644 | kfree_skb(skb); | |
645 | ||
646 | return rc; | |
647 | } | |
648 | ||
649 | static void digital_in_recv_sensb_res(struct nfc_digital_dev *ddev, void *arg, | |
650 | struct sk_buff *resp) | |
651 | { | |
652 | struct nfc_target *target = NULL; | |
653 | struct digital_sensb_res *sensb_res; | |
654 | u8 fsci; | |
655 | int rc; | |
656 | ||
657 | if (IS_ERR(resp)) { | |
658 | rc = PTR_ERR(resp); | |
659 | resp = NULL; | |
660 | goto exit; | |
661 | } | |
662 | ||
663 | if (resp->len != sizeof(*sensb_res)) { | |
664 | PROTOCOL_ERR("5.6.2.1"); | |
665 | rc = -EIO; | |
666 | goto exit; | |
667 | } | |
668 | ||
669 | sensb_res = (struct digital_sensb_res *)resp->data; | |
670 | ||
671 | if (sensb_res->cmd != DIGITAL_CMD_SENSB_RES) { | |
672 | PROTOCOL_ERR("5.6.2"); | |
673 | rc = -EIO; | |
674 | goto exit; | |
675 | } | |
676 | ||
677 | if (!(sensb_res->proto_info[1] & BIT(0))) { | |
678 | PROTOCOL_ERR("5.6.2.12"); | |
679 | rc = -EIO; | |
680 | goto exit; | |
681 | } | |
682 | ||
683 | if (sensb_res->proto_info[1] & BIT(3)) { | |
684 | PROTOCOL_ERR("5.6.2.16"); | |
685 | rc = -EIO; | |
686 | goto exit; | |
687 | } | |
688 | ||
689 | fsci = DIGITAL_SENSB_FSCI(sensb_res->proto_info[1]); | |
690 | if (fsci >= 8) | |
691 | ddev->target_fsc = DIGITAL_ATS_MAX_FSC; | |
692 | else | |
693 | ddev->target_fsc = digital_ats_fsc[fsci]; | |
694 | ||
695 | target = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); | |
696 | if (!target) { | |
697 | rc = -ENOMEM; | |
698 | goto exit; | |
699 | } | |
700 | ||
701 | rc = digital_in_send_attrib_req(ddev, target, sensb_res); | |
702 | ||
703 | exit: | |
704 | dev_kfree_skb(resp); | |
705 | ||
706 | if (rc) { | |
707 | kfree(target); | |
708 | digital_poll_next_tech(ddev); | |
709 | } | |
710 | } | |
711 | ||
712 | int digital_in_send_sensb_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
713 | { | |
714 | struct digital_sensb_req *sensb_req; | |
715 | struct sk_buff *skb; | |
716 | int rc; | |
717 | ||
718 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
719 | NFC_DIGITAL_RF_TECH_106B); | |
720 | if (rc) | |
721 | return rc; | |
722 | ||
723 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
724 | NFC_DIGITAL_FRAMING_NFCB); | |
725 | if (rc) | |
726 | return rc; | |
727 | ||
728 | skb = digital_skb_alloc(ddev, sizeof(*sensb_req)); | |
729 | if (!skb) | |
730 | return -ENOMEM; | |
731 | ||
4df864c1 | 732 | sensb_req = skb_put(skb, sizeof(*sensb_req)); |
24734607 MG |
733 | |
734 | sensb_req->cmd = DIGITAL_CMD_SENSB_REQ; | |
735 | sensb_req->afi = 0x00; /* All families and sub-families */ | |
736 | sensb_req->param = DIGITAL_SENSB_N(0); | |
737 | ||
738 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sensb_res, | |
739 | NULL); | |
740 | if (rc) | |
741 | kfree_skb(skb); | |
742 | ||
743 | return rc; | |
744 | } | |
745 | ||
8c0695e4 TE |
746 | static void digital_in_recv_sensf_res(struct nfc_digital_dev *ddev, void *arg, |
747 | struct sk_buff *resp) | |
748 | { | |
749 | int rc; | |
7d0911c0 | 750 | u8 proto; |
8c0695e4 TE |
751 | struct nfc_target target; |
752 | struct digital_sensf_res *sensf_res; | |
753 | ||
754 | if (IS_ERR(resp)) { | |
755 | rc = PTR_ERR(resp); | |
756 | resp = NULL; | |
757 | goto exit; | |
758 | } | |
759 | ||
760 | if (resp->len < DIGITAL_SENSF_RES_MIN_LENGTH) { | |
761 | rc = -EIO; | |
762 | goto exit; | |
763 | } | |
764 | ||
765 | if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) { | |
766 | rc = digital_skb_check_crc_f(resp); | |
767 | if (rc) { | |
768 | PROTOCOL_ERR("6.4.1.8"); | |
769 | goto exit; | |
770 | } | |
771 | } | |
772 | ||
773 | skb_pull(resp, 1); | |
774 | ||
775 | memset(&target, 0, sizeof(struct nfc_target)); | |
776 | ||
777 | sensf_res = (struct digital_sensf_res *)resp->data; | |
778 | ||
779 | memcpy(target.sensf_res, sensf_res, resp->len); | |
780 | target.sensf_res_len = resp->len; | |
781 | ||
782 | memcpy(target.nfcid2, sensf_res->nfcid2, NFC_NFCID2_MAXSIZE); | |
783 | target.nfcid2_len = NFC_NFCID2_MAXSIZE; | |
784 | ||
7d0911c0 TE |
785 | if (target.nfcid2[0] == DIGITAL_SENSF_NFCID2_NFC_DEP_B1 && |
786 | target.nfcid2[1] == DIGITAL_SENSF_NFCID2_NFC_DEP_B2) | |
787 | proto = NFC_PROTO_NFC_DEP; | |
788 | else | |
789 | proto = NFC_PROTO_FELICA; | |
790 | ||
791 | rc = digital_target_found(ddev, &target, proto); | |
8c0695e4 TE |
792 | |
793 | exit: | |
794 | dev_kfree_skb(resp); | |
795 | ||
796 | if (rc) | |
797 | digital_poll_next_tech(ddev); | |
798 | } | |
799 | ||
800 | int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
801 | { | |
802 | struct digital_sensf_req *sensf_req; | |
803 | struct sk_buff *skb; | |
804 | int rc; | |
805 | u8 size; | |
806 | ||
807 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); | |
808 | if (rc) | |
809 | return rc; | |
810 | ||
811 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
812 | NFC_DIGITAL_FRAMING_NFCF); | |
813 | if (rc) | |
814 | return rc; | |
815 | ||
816 | size = sizeof(struct digital_sensf_req); | |
817 | ||
818 | skb = digital_skb_alloc(ddev, size); | |
819 | if (!skb) | |
820 | return -ENOMEM; | |
821 | ||
822 | skb_put(skb, size); | |
823 | ||
824 | sensf_req = (struct digital_sensf_req *)skb->data; | |
825 | sensf_req->cmd = DIGITAL_CMD_SENSF_REQ; | |
826 | sensf_req->sc1 = 0xFF; | |
827 | sensf_req->sc2 = 0xFF; | |
828 | sensf_req->rc = 0; | |
829 | sensf_req->tsn = 0; | |
830 | ||
831 | *skb_push(skb, 1) = size + 1; | |
832 | ||
833 | if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) | |
834 | digital_skb_add_crc_f(skb); | |
835 | ||
836 | rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sensf_res, | |
837 | NULL); | |
838 | if (rc) | |
839 | kfree_skb(skb); | |
840 | ||
841 | return rc; | |
842 | } | |
1c7a4c24 | 843 | |
a381d482 MG |
844 | static void digital_in_recv_iso15693_inv_res(struct nfc_digital_dev *ddev, |
845 | void *arg, struct sk_buff *resp) | |
846 | { | |
847 | struct digital_iso15693_inv_res *res; | |
848 | struct nfc_target *target = NULL; | |
849 | int rc; | |
850 | ||
851 | if (IS_ERR(resp)) { | |
852 | rc = PTR_ERR(resp); | |
853 | resp = NULL; | |
854 | goto out_free_skb; | |
855 | } | |
856 | ||
857 | if (resp->len != sizeof(*res)) { | |
858 | rc = -EIO; | |
859 | goto out_free_skb; | |
860 | } | |
861 | ||
862 | res = (struct digital_iso15693_inv_res *)resp->data; | |
863 | ||
864 | if (!DIGITAL_ISO15693_RES_IS_VALID(res->flags)) { | |
865 | PROTOCOL_ERR("ISO15693 - 10.3.1"); | |
866 | rc = -EINVAL; | |
867 | goto out_free_skb; | |
868 | } | |
869 | ||
870 | target = kzalloc(sizeof(*target), GFP_KERNEL); | |
871 | if (!target) { | |
872 | rc = -ENOMEM; | |
873 | goto out_free_skb; | |
874 | } | |
875 | ||
876 | target->is_iso15693 = 1; | |
877 | target->iso15693_dsfid = res->dsfid; | |
878 | memcpy(target->iso15693_uid, &res->uid, sizeof(target->iso15693_uid)); | |
879 | ||
880 | rc = digital_target_found(ddev, target, NFC_PROTO_ISO15693); | |
881 | ||
882 | kfree(target); | |
883 | ||
884 | out_free_skb: | |
885 | dev_kfree_skb(resp); | |
886 | ||
887 | if (rc) | |
888 | digital_poll_next_tech(ddev); | |
889 | } | |
890 | ||
891 | int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech) | |
892 | { | |
893 | struct digital_iso15693_inv_req *req; | |
894 | struct sk_buff *skb; | |
895 | int rc; | |
896 | ||
897 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
898 | NFC_DIGITAL_RF_TECH_ISO15693); | |
899 | if (rc) | |
900 | return rc; | |
901 | ||
902 | rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
903 | NFC_DIGITAL_FRAMING_ISO15693_INVENTORY); | |
904 | if (rc) | |
905 | return rc; | |
906 | ||
907 | skb = digital_skb_alloc(ddev, sizeof(*req)); | |
908 | if (!skb) | |
909 | return -ENOMEM; | |
910 | ||
911 | skb_put(skb, sizeof(*req) - sizeof(req->mask)); /* No mask */ | |
912 | req = (struct digital_iso15693_inv_req *)skb->data; | |
913 | ||
914 | /* Single sub-carrier, high data rate, no AFI, single slot | |
915 | * Inventory command | |
916 | */ | |
917 | req->flags = DIGITAL_ISO15693_REQ_FLAG_DATA_RATE | | |
918 | DIGITAL_ISO15693_REQ_FLAG_INVENTORY | | |
919 | DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS; | |
920 | req->cmd = DIGITAL_CMD_ISO15693_INVENTORY_REQ; | |
921 | req->mask_len = 0; | |
922 | ||
923 | rc = digital_in_send_cmd(ddev, skb, 30, | |
924 | digital_in_recv_iso15693_inv_res, NULL); | |
925 | if (rc) | |
926 | kfree_skb(skb); | |
927 | ||
928 | return rc; | |
929 | } | |
930 | ||
1c7a4c24 TE |
931 | static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev) |
932 | { | |
933 | struct sk_buff *skb; | |
934 | int rc; | |
935 | ||
936 | skb = digital_skb_alloc(ddev, 1); | |
937 | if (!skb) | |
938 | return -ENOMEM; | |
939 | ||
4df864c1 | 940 | *(u8 *)skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP; |
1c7a4c24 TE |
941 | |
942 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) | |
943 | digital_skb_add_crc_a(skb); | |
944 | ||
55537c7e MG |
945 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
946 | NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE); | |
947 | if (rc) { | |
948 | kfree_skb(skb); | |
949 | return rc; | |
950 | } | |
951 | ||
1c7a4c24 TE |
952 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_atr_req, |
953 | NULL); | |
954 | if (rc) | |
955 | kfree_skb(skb); | |
956 | ||
957 | return rc; | |
958 | } | |
959 | ||
960 | static void digital_tg_recv_sel_req(struct nfc_digital_dev *ddev, void *arg, | |
961 | struct sk_buff *resp) | |
962 | { | |
963 | int rc; | |
964 | ||
965 | if (IS_ERR(resp)) { | |
966 | rc = PTR_ERR(resp); | |
967 | resp = NULL; | |
968 | goto exit; | |
969 | } | |
970 | ||
971 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { | |
972 | rc = digital_skb_check_crc_a(resp); | |
973 | if (rc) { | |
974 | PROTOCOL_ERR("4.4.1.3"); | |
975 | goto exit; | |
976 | } | |
977 | } | |
978 | ||
979 | /* Silently ignore SEL_REQ content and send a SEL_RES for NFC-DEP */ | |
980 | ||
981 | rc = digital_tg_send_sel_res(ddev); | |
982 | ||
983 | exit: | |
984 | if (rc) | |
985 | digital_poll_next_tech(ddev); | |
986 | ||
987 | dev_kfree_skb(resp); | |
988 | } | |
989 | ||
990 | static int digital_tg_send_sdd_res(struct nfc_digital_dev *ddev) | |
991 | { | |
992 | struct sk_buff *skb; | |
993 | struct digital_sdd_res *sdd_res; | |
994 | int rc, i; | |
995 | ||
996 | skb = digital_skb_alloc(ddev, sizeof(struct digital_sdd_res)); | |
997 | if (!skb) | |
998 | return -ENOMEM; | |
999 | ||
1000 | skb_put(skb, sizeof(struct digital_sdd_res)); | |
1001 | sdd_res = (struct digital_sdd_res *)skb->data; | |
1002 | ||
1003 | sdd_res->nfcid1[0] = 0x08; | |
1004 | get_random_bytes(sdd_res->nfcid1 + 1, 3); | |
1005 | ||
1006 | sdd_res->bcc = 0; | |
1007 | for (i = 0; i < 4; i++) | |
1008 | sdd_res->bcc ^= sdd_res->nfcid1[i]; | |
1009 | ||
55537c7e MG |
1010 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1011 | NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A); | |
1012 | if (rc) { | |
1013 | kfree_skb(skb); | |
1014 | return rc; | |
1015 | } | |
1016 | ||
1c7a4c24 TE |
1017 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sel_req, |
1018 | NULL); | |
1019 | if (rc) | |
1020 | kfree_skb(skb); | |
1021 | ||
1022 | return rc; | |
1023 | } | |
1024 | ||
1025 | static void digital_tg_recv_sdd_req(struct nfc_digital_dev *ddev, void *arg, | |
1026 | struct sk_buff *resp) | |
1027 | { | |
1028 | u8 *sdd_req; | |
1029 | int rc; | |
1030 | ||
1031 | if (IS_ERR(resp)) { | |
1032 | rc = PTR_ERR(resp); | |
1033 | resp = NULL; | |
1034 | goto exit; | |
1035 | } | |
1036 | ||
1037 | sdd_req = resp->data; | |
1038 | ||
1039 | if (resp->len < 2 || sdd_req[0] != DIGITAL_CMD_SEL_REQ_CL1 || | |
1040 | sdd_req[1] != DIGITAL_SDD_REQ_SEL_PAR) { | |
1041 | rc = -EINVAL; | |
1042 | goto exit; | |
1043 | } | |
1044 | ||
1045 | rc = digital_tg_send_sdd_res(ddev); | |
1046 | ||
1047 | exit: | |
1048 | if (rc) | |
1049 | digital_poll_next_tech(ddev); | |
1050 | ||
1051 | dev_kfree_skb(resp); | |
1052 | } | |
1053 | ||
1054 | static int digital_tg_send_sens_res(struct nfc_digital_dev *ddev) | |
1055 | { | |
1056 | struct sk_buff *skb; | |
1057 | u8 *sens_res; | |
1058 | int rc; | |
1059 | ||
1060 | skb = digital_skb_alloc(ddev, 2); | |
1061 | if (!skb) | |
1062 | return -ENOMEM; | |
1063 | ||
1064 | sens_res = skb_put(skb, 2); | |
1065 | ||
1066 | sens_res[0] = (DIGITAL_SENS_RES_NFC_DEP >> 8) & 0xFF; | |
1067 | sens_res[1] = DIGITAL_SENS_RES_NFC_DEP & 0xFF; | |
1068 | ||
55537c7e MG |
1069 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1070 | NFC_DIGITAL_FRAMING_NFCA_STANDARD); | |
1071 | if (rc) { | |
1072 | kfree_skb(skb); | |
1073 | return rc; | |
1074 | } | |
1075 | ||
1c7a4c24 TE |
1076 | rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sdd_req, |
1077 | NULL); | |
1078 | if (rc) | |
1079 | kfree_skb(skb); | |
1080 | ||
1081 | return rc; | |
1082 | } | |
1083 | ||
1084 | void digital_tg_recv_sens_req(struct nfc_digital_dev *ddev, void *arg, | |
1085 | struct sk_buff *resp) | |
1086 | { | |
1087 | u8 sens_req; | |
1088 | int rc; | |
1089 | ||
1090 | if (IS_ERR(resp)) { | |
1091 | rc = PTR_ERR(resp); | |
1092 | resp = NULL; | |
1093 | goto exit; | |
1094 | } | |
1095 | ||
1096 | sens_req = resp->data[0]; | |
1097 | ||
1098 | if (!resp->len || (sens_req != DIGITAL_CMD_SENS_REQ && | |
1099 | sens_req != DIGITAL_CMD_ALL_REQ)) { | |
1100 | rc = -EINVAL; | |
1101 | goto exit; | |
1102 | } | |
1103 | ||
1104 | rc = digital_tg_send_sens_res(ddev); | |
1105 | ||
1106 | exit: | |
1107 | if (rc) | |
1108 | digital_poll_next_tech(ddev); | |
1109 | ||
1110 | dev_kfree_skb(resp); | |
1111 | } | |
1112 | ||
4b8b6267 MG |
1113 | static void digital_tg_recv_atr_or_sensf_req(struct nfc_digital_dev *ddev, |
1114 | void *arg, struct sk_buff *resp) | |
1115 | { | |
1116 | if (!IS_ERR(resp) && (resp->len >= 2) && | |
1117 | (resp->data[1] == DIGITAL_CMD_SENSF_REQ)) | |
1118 | digital_tg_recv_sensf_req(ddev, arg, resp); | |
1119 | else | |
1120 | digital_tg_recv_atr_req(ddev, arg, resp); | |
1121 | ||
1122 | return; | |
1123 | } | |
1124 | ||
180106bd | 1125 | static int digital_tg_send_sensf_res(struct nfc_digital_dev *ddev, |
1c7a4c24 TE |
1126 | struct digital_sensf_req *sensf_req) |
1127 | { | |
1128 | struct sk_buff *skb; | |
1129 | u8 size; | |
1130 | int rc; | |
1131 | struct digital_sensf_res *sensf_res; | |
1132 | ||
1133 | size = sizeof(struct digital_sensf_res); | |
1134 | ||
96e829b4 | 1135 | if (sensf_req->rc == DIGITAL_SENSF_REQ_RC_NONE) |
1c7a4c24 TE |
1136 | size -= sizeof(sensf_res->rd); |
1137 | ||
1138 | skb = digital_skb_alloc(ddev, size); | |
1139 | if (!skb) | |
1140 | return -ENOMEM; | |
1141 | ||
1142 | skb_put(skb, size); | |
1143 | ||
1144 | sensf_res = (struct digital_sensf_res *)skb->data; | |
1145 | ||
1146 | memset(sensf_res, 0, size); | |
1147 | ||
1148 | sensf_res->cmd = DIGITAL_CMD_SENSF_RES; | |
1149 | sensf_res->nfcid2[0] = DIGITAL_SENSF_NFCID2_NFC_DEP_B1; | |
1150 | sensf_res->nfcid2[1] = DIGITAL_SENSF_NFCID2_NFC_DEP_B2; | |
1151 | get_random_bytes(&sensf_res->nfcid2[2], 6); | |
1152 | ||
1153 | switch (sensf_req->rc) { | |
1154 | case DIGITAL_SENSF_REQ_RC_SC: | |
1155 | sensf_res->rd[0] = sensf_req->sc1; | |
1156 | sensf_res->rd[1] = sensf_req->sc2; | |
1157 | break; | |
1158 | case DIGITAL_SENSF_REQ_RC_AP: | |
1159 | sensf_res->rd[0] = DIGITAL_SENSF_RES_RD_AP_B1; | |
1160 | sensf_res->rd[1] = DIGITAL_SENSF_RES_RD_AP_B2; | |
1161 | break; | |
1162 | } | |
1163 | ||
1164 | *skb_push(skb, sizeof(u8)) = size + 1; | |
1165 | ||
1166 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) | |
1167 | digital_skb_add_crc_f(skb); | |
1168 | ||
1169 | rc = digital_tg_send_cmd(ddev, skb, 300, | |
4b8b6267 | 1170 | digital_tg_recv_atr_or_sensf_req, NULL); |
1c7a4c24 TE |
1171 | if (rc) |
1172 | kfree_skb(skb); | |
1173 | ||
1174 | return rc; | |
1175 | } | |
1176 | ||
1177 | void digital_tg_recv_sensf_req(struct nfc_digital_dev *ddev, void *arg, | |
1178 | struct sk_buff *resp) | |
1179 | { | |
1180 | struct digital_sensf_req *sensf_req; | |
1181 | int rc; | |
1182 | ||
1183 | if (IS_ERR(resp)) { | |
1184 | rc = PTR_ERR(resp); | |
1185 | resp = NULL; | |
1186 | goto exit; | |
1187 | } | |
1188 | ||
1189 | if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { | |
1190 | rc = digital_skb_check_crc_f(resp); | |
1191 | if (rc) { | |
1192 | PROTOCOL_ERR("6.4.1.8"); | |
1193 | goto exit; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | if (resp->len != sizeof(struct digital_sensf_req) + 1) { | |
1198 | rc = -EINVAL; | |
1199 | goto exit; | |
1200 | } | |
1201 | ||
1202 | skb_pull(resp, 1); | |
1203 | sensf_req = (struct digital_sensf_req *)resp->data; | |
1204 | ||
1205 | if (sensf_req->cmd != DIGITAL_CMD_SENSF_REQ) { | |
1206 | rc = -EINVAL; | |
1207 | goto exit; | |
1208 | } | |
1209 | ||
1210 | rc = digital_tg_send_sensf_res(ddev, sensf_req); | |
1211 | ||
1212 | exit: | |
1213 | if (rc) | |
1214 | digital_poll_next_tech(ddev); | |
1215 | ||
1216 | dev_kfree_skb(resp); | |
1217 | } | |
1218 | ||
bf30a67c | 1219 | static int digital_tg_config_nfca(struct nfc_digital_dev *ddev) |
1c7a4c24 TE |
1220 | { |
1221 | int rc; | |
1222 | ||
bf30a67c MG |
1223 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, |
1224 | NFC_DIGITAL_RF_TECH_106A); | |
1c7a4c24 TE |
1225 | if (rc) |
1226 | return rc; | |
1227 | ||
bf30a67c MG |
1228 | return digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1229 | NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); | |
1230 | } | |
1231 | ||
1232 | int digital_tg_listen_nfca(struct nfc_digital_dev *ddev, u8 rf_tech) | |
1233 | { | |
1234 | int rc; | |
1235 | ||
1236 | rc = digital_tg_config_nfca(ddev); | |
1c7a4c24 TE |
1237 | if (rc) |
1238 | return rc; | |
1239 | ||
1240 | return digital_tg_listen(ddev, 300, digital_tg_recv_sens_req, NULL); | |
1241 | } | |
1242 | ||
bf30a67c | 1243 | static int digital_tg_config_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech) |
1c7a4c24 TE |
1244 | { |
1245 | int rc; | |
1c7a4c24 TE |
1246 | |
1247 | rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); | |
1248 | if (rc) | |
1249 | return rc; | |
1250 | ||
bf30a67c MG |
1251 | return digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, |
1252 | NFC_DIGITAL_FRAMING_NFCF_NFC_DEP); | |
1253 | } | |
1254 | ||
1255 | int digital_tg_listen_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech) | |
1256 | { | |
1257 | int rc; | |
bf30a67c MG |
1258 | |
1259 | rc = digital_tg_config_nfcf(ddev, rf_tech); | |
1c7a4c24 TE |
1260 | if (rc) |
1261 | return rc; | |
1262 | ||
b7769344 | 1263 | return digital_tg_listen(ddev, 300, digital_tg_recv_sensf_req, NULL); |
1c7a4c24 | 1264 | } |
bf30a67c MG |
1265 | |
1266 | void digital_tg_recv_md_req(struct nfc_digital_dev *ddev, void *arg, | |
1267 | struct sk_buff *resp) | |
1268 | { | |
1269 | u8 rf_tech; | |
1270 | int rc; | |
1271 | ||
1272 | if (IS_ERR(resp)) { | |
1273 | resp = NULL; | |
1274 | goto exit_free_skb; | |
1275 | } | |
1276 | ||
1277 | rc = ddev->ops->tg_get_rf_tech(ddev, &rf_tech); | |
1278 | if (rc) | |
1279 | goto exit_free_skb; | |
1280 | ||
1281 | switch (rf_tech) { | |
1282 | case NFC_DIGITAL_RF_TECH_106A: | |
1283 | rc = digital_tg_config_nfca(ddev); | |
1284 | if (rc) | |
1285 | goto exit_free_skb; | |
1286 | digital_tg_recv_sens_req(ddev, arg, resp); | |
1287 | break; | |
1288 | case NFC_DIGITAL_RF_TECH_212F: | |
1289 | case NFC_DIGITAL_RF_TECH_424F: | |
1290 | rc = digital_tg_config_nfcf(ddev, rf_tech); | |
1291 | if (rc) | |
1292 | goto exit_free_skb; | |
1293 | digital_tg_recv_sensf_req(ddev, arg, resp); | |
1294 | break; | |
1295 | default: | |
1296 | goto exit_free_skb; | |
1297 | } | |
1298 | ||
1299 | return; | |
1300 | ||
1301 | exit_free_skb: | |
1302 | digital_poll_next_tech(ddev); | |
1303 | dev_kfree_skb(resp); | |
1304 | } |