Blame view
net/nfc/digital_technology.c
20.7 KB
59ee2361c
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
/* * NFC Digital Protocol stack * Copyright (c) 2013, Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * */ |
c5da0e4a3
|
15 |
#define pr_fmt(fmt) "digital: %s: " fmt, __func__ |
59ee2361c
|
16 17 18 19 20 21 22 23 24 25 26 27 |
#include "digital.h" #define DIGITAL_CMD_SENS_REQ 0x26 #define DIGITAL_CMD_ALL_REQ 0x52 #define DIGITAL_CMD_SEL_REQ_CL1 0x93 #define DIGITAL_CMD_SEL_REQ_CL2 0x95 #define DIGITAL_CMD_SEL_REQ_CL3 0x97 #define DIGITAL_SDD_REQ_SEL_PAR 0x20 #define DIGITAL_SDD_RES_CT 0x88 #define DIGITAL_SDD_RES_LEN 5 |
2c66daecc
|
28 29 |
#define DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res) (!((sel_res) & 0x04)) #define DIGITAL_SEL_RES_IS_T2T(sel_res) (!((sel_res) & 0x60)) |
12e3d241e
|
30 |
#define DIGITAL_SEL_RES_IS_T4T(sel_res) ((sel_res) & 0x20) |
7d0911c02
|
31 |
#define DIGITAL_SEL_RES_IS_NFC_DEP(sel_res) ((sel_res) & 0x40) |
2c66daecc
|
32 |
|
13292c9a1
|
33 |
#define DIGITAL_SENS_RES_IS_T1T(sens_res) (((sens_res) & 0x0C00) == 0x0C00) |
2c66daecc
|
34 |
#define DIGITAL_SENS_RES_IS_VALID(sens_res) \ |
13292c9a1
|
35 36 |
((!((sens_res) & 0x001F) && (((sens_res) & 0x0C00) == 0x0C00)) || \ (((sens_res) & 0x001F) && ((sens_res) & 0x0C00) != 0x0C00)) |
2c66daecc
|
37 38 39 |
#define DIGITAL_MIFARE_READ_RES_LEN 16 #define DIGITAL_MIFARE_ACK_RES 0x0A |
8c0695e49
|
40 41 42 43 44 45 46 47 48 49 |
#define DIGITAL_CMD_SENSF_REQ 0x00 #define DIGITAL_CMD_SENSF_RES 0x01 #define DIGITAL_SENSF_RES_MIN_LENGTH 17 #define DIGITAL_SENSF_RES_RD_AP_B1 0x00 #define DIGITAL_SENSF_RES_RD_AP_B2 0x8F #define DIGITAL_SENSF_REQ_RC_NONE 0 #define DIGITAL_SENSF_REQ_RC_SC 1 #define DIGITAL_SENSF_REQ_RC_AP 2 |
a381d4828
|
50 51 52 53 54 55 56 57 |
#define DIGITAL_CMD_ISO15693_INVENTORY_REQ 0x01 #define DIGITAL_ISO15693_REQ_FLAG_DATA_RATE BIT(1) #define DIGITAL_ISO15693_REQ_FLAG_INVENTORY BIT(2) #define DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS BIT(5) #define DIGITAL_ISO15693_RES_FLAG_ERROR BIT(0) #define DIGITAL_ISO15693_RES_IS_VALID(flags) \ (!((flags) & DIGITAL_ISO15693_RES_FLAG_ERROR)) |
c813007f9
|
58 59 60 61 62 63 64 65 |
#define DIGITAL_ISO_DEP_I_PCB 0x02 #define DIGITAL_ISO_DEP_PNI(pni) ((pni) & 0x01) #define DIGITAL_ISO_DEP_PCB_TYPE(pcb) ((pcb) & 0xC0) #define DIGITAL_ISO_DEP_I_BLOCK 0x00 #define DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb) ((pcb) & 0x08) |
12e3d241e
|
66 67 68 69 70 71 72 73 74 |
static const u8 digital_ats_fsc[] = { 16, 24, 32, 40, 48, 64, 96, 128, }; #define DIGITAL_ATS_FSCI(t0) ((t0) & 0x0F) #define DIGITAL_ATS_MAX_FSC 256 #define DIGITAL_RATS_BYTE1 0xE0 #define DIGITAL_RATS_PARAM 0x80 |
2c66daecc
|
75 76 77 78 79 80 81 82 83 84 85 |
struct digital_sdd_res { u8 nfcid1[4]; u8 bcc; } __packed; struct digital_sel_req { u8 sel_cmd; u8 b2; u8 nfcid1[4]; u8 bcc; } __packed; |
8c0695e49
|
86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 |
struct digital_sensf_req { u8 cmd; u8 sc1; u8 sc2; u8 rc; u8 tsn; } __packed; struct digital_sensf_res { u8 cmd; u8 nfcid2[8]; u8 pad0[2]; u8 pad1[3]; u8 mrti_check; u8 mrti_update; u8 pad2; u8 rd[2]; } __packed; |
a381d4828
|
104 105 106 107 108 109 110 111 112 113 114 115 |
struct digital_iso15693_inv_req { u8 flags; u8 cmd; u8 mask_len; u64 mask; } __packed; struct digital_iso15693_inv_res { u8 flags; u8 dsfid; u64 uid; } __packed; |
2c66daecc
|
116 117 |
static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev, struct nfc_target *target); |
c813007f9
|
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 |
int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev, struct sk_buff *skb) { u8 pcb; u8 block_type; if (skb->len < 1) return -EIO; pcb = *skb->data; block_type = DIGITAL_ISO_DEP_PCB_TYPE(pcb); /* No support fo R-block nor S-block */ if (block_type != DIGITAL_ISO_DEP_I_BLOCK) { pr_err("ISO_DEP R-block and S-block not supported "); return -EIO; } if (DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb)) { pr_err("DID field in ISO_DEP PCB not supported "); return -EIO; } skb_pull(skb, 1); return 0; } int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev, struct sk_buff *skb) { /* * Chaining not supported so skb->len + 1 PCB byte + 2 CRC bytes must * not be greater than remote FSC */ if (skb->len + 3 > ddev->target_fsc) return -EIO; skb_push(skb, 1); *skb->data = DIGITAL_ISO_DEP_I_PCB | ddev->curr_nfc_dep_pni; ddev->curr_nfc_dep_pni = DIGITAL_ISO_DEP_PNI(ddev->curr_nfc_dep_pni + 1); return 0; } |
12e3d241e
|
167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 |
static void digital_in_recv_ats(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { struct nfc_target *target = arg; u8 fsdi; int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (resp->len < 2) { rc = -EIO; goto exit; } fsdi = DIGITAL_ATS_FSCI(resp->data[1]); if (fsdi >= 8) ddev->target_fsc = DIGITAL_ATS_MAX_FSC; else ddev->target_fsc = digital_ats_fsc[fsdi]; ddev->curr_nfc_dep_pni = 0; rc = digital_target_found(ddev, target, NFC_PROTO_ISO14443); exit: dev_kfree_skb(resp); kfree(target); if (rc) digital_poll_next_tech(ddev); } static int digital_in_send_rats(struct nfc_digital_dev *ddev, struct nfc_target *target) { int rc; struct sk_buff *skb; skb = digital_skb_alloc(ddev, 2); if (!skb) return -ENOMEM; *skb_put(skb, 1) = DIGITAL_RATS_BYTE1; *skb_put(skb, 1) = DIGITAL_RATS_PARAM; rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_ats, target); if (rc) kfree_skb(skb); return rc; } |
2c66daecc
|
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 |
static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { struct nfc_target *target = arg; int rc; u8 sel_res; u8 nfc_proto; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) { rc = digital_skb_check_crc_a(resp); if (rc) { PROTOCOL_ERR("4.4.1.3"); goto exit; } } if (!resp->len) { rc = -EIO; goto exit; } sel_res = resp->data[0]; if (!DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res)) { rc = digital_in_send_sdd_req(ddev, target); if (rc) goto exit; goto exit_free_skb; } |
12e3d241e
|
259 |
target->sel_res = sel_res; |
2c66daecc
|
260 261 |
if (DIGITAL_SEL_RES_IS_T2T(sel_res)) { nfc_proto = NFC_PROTO_MIFARE; |
12e3d241e
|
262 263 264 265 266 267 268 269 270 |
} else if (DIGITAL_SEL_RES_IS_T4T(sel_res)) { rc = digital_in_send_rats(ddev, target); if (rc) goto exit; /* * Skip target_found and don't free it for now. This will be * done when receiving the ATS */ goto exit_free_skb; |
7d0911c02
|
271 272 |
} else if (DIGITAL_SEL_RES_IS_NFC_DEP(sel_res)) { nfc_proto = NFC_PROTO_NFC_DEP; |
2c66daecc
|
273 274 275 276 |
} else { rc = -EOPNOTSUPP; goto exit; } |
2c66daecc
|
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 |
rc = digital_target_found(ddev, target, nfc_proto); exit: kfree(target); exit_free_skb: dev_kfree_skb(resp); if (rc) digital_poll_next_tech(ddev); } static int digital_in_send_sel_req(struct nfc_digital_dev *ddev, struct nfc_target *target, struct digital_sdd_res *sdd_res) { struct sk_buff *skb; struct digital_sel_req *sel_req; u8 sel_cmd; int rc; skb = digital_skb_alloc(ddev, sizeof(struct digital_sel_req)); if (!skb) return -ENOMEM; skb_put(skb, sizeof(struct digital_sel_req)); sel_req = (struct digital_sel_req *)skb->data; if (target->nfcid1_len <= 4) sel_cmd = DIGITAL_CMD_SEL_REQ_CL1; else if (target->nfcid1_len < 10) sel_cmd = DIGITAL_CMD_SEL_REQ_CL2; else sel_cmd = DIGITAL_CMD_SEL_REQ_CL3; sel_req->sel_cmd = sel_cmd; sel_req->b2 = 0x70; memcpy(sel_req->nfcid1, sdd_res->nfcid1, 4); sel_req->bcc = sdd_res->bcc; if (DIGITAL_DRV_CAPS_IN_CRC(ddev)) { rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A); if (rc) goto exit; } else { digital_skb_add_crc_a(skb); } rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sel_res, target); exit: if (rc) kfree_skb(skb); return rc; } static void digital_in_recv_sdd_res(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { struct nfc_target *target = arg; struct digital_sdd_res *sdd_res; int rc; u8 offset, size; u8 i, bcc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (resp->len < DIGITAL_SDD_RES_LEN) { PROTOCOL_ERR("4.7.2.8"); rc = -EINVAL; goto exit; } sdd_res = (struct digital_sdd_res *)resp->data; for (i = 0, bcc = 0; i < 4; i++) bcc ^= sdd_res->nfcid1[i]; if (bcc != sdd_res->bcc) { PROTOCOL_ERR("4.7.2.6"); rc = -EINVAL; goto exit; } if (sdd_res->nfcid1[0] == DIGITAL_SDD_RES_CT) { offset = 1; size = 3; } else { offset = 0; size = 4; } memcpy(target->nfcid1 + target->nfcid1_len, sdd_res->nfcid1 + offset, size); target->nfcid1_len += size; rc = digital_in_send_sel_req(ddev, target, sdd_res); exit: dev_kfree_skb(resp); if (rc) { kfree(target); digital_poll_next_tech(ddev); } } static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev, struct nfc_target *target) { int rc; struct sk_buff *skb; u8 sel_cmd; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCA_STANDARD); if (rc) return rc; skb = digital_skb_alloc(ddev, 2); |
260425308
|
403 |
if (!skb) |
2c66daecc
|
404 |
return -ENOMEM; |
2c66daecc
|
405 406 407 408 409 410 411 412 413 414 415 416 417 418 |
if (target->nfcid1_len == 0) sel_cmd = DIGITAL_CMD_SEL_REQ_CL1; else if (target->nfcid1_len == 3) sel_cmd = DIGITAL_CMD_SEL_REQ_CL2; else sel_cmd = DIGITAL_CMD_SEL_REQ_CL3; *skb_put(skb, sizeof(u8)) = sel_cmd; *skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR; return digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res, target); } |
59ee2361c
|
419 420 421 |
static void digital_in_recv_sens_res(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { |
2c66daecc
|
422 |
struct nfc_target *target = NULL; |
2c66daecc
|
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 |
int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (resp->len < sizeof(u16)) { rc = -EIO; goto exit; } target = kzalloc(sizeof(struct nfc_target), GFP_KERNEL); if (!target) { rc = -ENOMEM; goto exit; } |
13292c9a1
|
441 |
target->sens_res = __le16_to_cpu(*(__le16 *)resp->data); |
59ee2361c
|
442 |
|
13292c9a1
|
443 |
if (!DIGITAL_SENS_RES_IS_VALID(target->sens_res)) { |
2c66daecc
|
444 445 446 447 |
PROTOCOL_ERR("4.6.3.3"); rc = -EINVAL; goto exit; } |
13292c9a1
|
448 |
if (DIGITAL_SENS_RES_IS_T1T(target->sens_res)) |
2c66daecc
|
449 450 451 452 453 454 455 456 457 458 459 |
rc = digital_target_found(ddev, target, NFC_PROTO_JEWEL); else rc = digital_in_send_sdd_req(ddev, target); exit: dev_kfree_skb(resp); if (rc) { kfree(target); digital_poll_next_tech(ddev); } |
59ee2361c
|
460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 |
} int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech) { struct sk_buff *skb; int rc; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, NFC_DIGITAL_RF_TECH_106A); if (rc) return rc; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCA_SHORT); if (rc) return rc; skb = digital_skb_alloc(ddev, 1); if (!skb) return -ENOMEM; *skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ; rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sens_res, NULL); if (rc) kfree_skb(skb); return rc; } |
2c66daecc
|
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 |
int digital_in_recv_mifare_res(struct sk_buff *resp) { /* Successful READ command response is 16 data bytes + 2 CRC bytes long. * Since the driver can't differentiate a ACK/NACK response from a valid * READ response, the CRC calculation must be handled at digital level * even if the driver supports it for this technology. */ if (resp->len == DIGITAL_MIFARE_READ_RES_LEN + DIGITAL_CRC_LEN) { if (digital_skb_check_crc_a(resp)) { PROTOCOL_ERR("9.4.1.2"); return -EIO; } return 0; } /* ACK response (i.e. successful WRITE). */ if (resp->len == 1 && resp->data[0] == DIGITAL_MIFARE_ACK_RES) { resp->data[0] = 0; return 0; } /* NACK and any other responses are treated as error. */ return -EIO; } |
8c0695e49
|
515 516 517 518 519 |
static void digital_in_recv_sensf_res(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { int rc; |
7d0911c02
|
520 |
u8 proto; |
8c0695e49
|
521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 |
struct nfc_target target; struct digital_sensf_res *sensf_res; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (resp->len < DIGITAL_SENSF_RES_MIN_LENGTH) { rc = -EIO; goto exit; } if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) { rc = digital_skb_check_crc_f(resp); if (rc) { PROTOCOL_ERR("6.4.1.8"); goto exit; } } skb_pull(resp, 1); memset(&target, 0, sizeof(struct nfc_target)); sensf_res = (struct digital_sensf_res *)resp->data; memcpy(target.sensf_res, sensf_res, resp->len); target.sensf_res_len = resp->len; memcpy(target.nfcid2, sensf_res->nfcid2, NFC_NFCID2_MAXSIZE); target.nfcid2_len = NFC_NFCID2_MAXSIZE; |
7d0911c02
|
554 555 556 557 558 559 560 |
if (target.nfcid2[0] == DIGITAL_SENSF_NFCID2_NFC_DEP_B1 && target.nfcid2[1] == DIGITAL_SENSF_NFCID2_NFC_DEP_B2) proto = NFC_PROTO_NFC_DEP; else proto = NFC_PROTO_FELICA; rc = digital_target_found(ddev, &target, proto); |
8c0695e49
|
561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 |
exit: dev_kfree_skb(resp); if (rc) digital_poll_next_tech(ddev); } int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech) { struct digital_sensf_req *sensf_req; struct sk_buff *skb; int rc; u8 size; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); if (rc) return rc; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCF); if (rc) return rc; size = sizeof(struct digital_sensf_req); skb = digital_skb_alloc(ddev, size); if (!skb) return -ENOMEM; skb_put(skb, size); sensf_req = (struct digital_sensf_req *)skb->data; sensf_req->cmd = DIGITAL_CMD_SENSF_REQ; sensf_req->sc1 = 0xFF; sensf_req->sc2 = 0xFF; sensf_req->rc = 0; sensf_req->tsn = 0; *skb_push(skb, 1) = size + 1; if (!DIGITAL_DRV_CAPS_IN_CRC(ddev)) digital_skb_add_crc_f(skb); rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sensf_res, NULL); if (rc) kfree_skb(skb); return rc; } |
1c7a4c24f
|
612 |
|
a381d4828
|
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 |
static void digital_in_recv_iso15693_inv_res(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { struct digital_iso15693_inv_res *res; struct nfc_target *target = NULL; int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto out_free_skb; } if (resp->len != sizeof(*res)) { rc = -EIO; goto out_free_skb; } res = (struct digital_iso15693_inv_res *)resp->data; if (!DIGITAL_ISO15693_RES_IS_VALID(res->flags)) { PROTOCOL_ERR("ISO15693 - 10.3.1"); rc = -EINVAL; goto out_free_skb; } target = kzalloc(sizeof(*target), GFP_KERNEL); if (!target) { rc = -ENOMEM; goto out_free_skb; } target->is_iso15693 = 1; target->iso15693_dsfid = res->dsfid; memcpy(target->iso15693_uid, &res->uid, sizeof(target->iso15693_uid)); rc = digital_target_found(ddev, target, NFC_PROTO_ISO15693); kfree(target); out_free_skb: dev_kfree_skb(resp); if (rc) digital_poll_next_tech(ddev); } int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech) { struct digital_iso15693_inv_req *req; struct sk_buff *skb; int rc; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, NFC_DIGITAL_RF_TECH_ISO15693); if (rc) return rc; rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_ISO15693_INVENTORY); if (rc) return rc; skb = digital_skb_alloc(ddev, sizeof(*req)); if (!skb) return -ENOMEM; skb_put(skb, sizeof(*req) - sizeof(req->mask)); /* No mask */ req = (struct digital_iso15693_inv_req *)skb->data; /* Single sub-carrier, high data rate, no AFI, single slot * Inventory command */ req->flags = DIGITAL_ISO15693_REQ_FLAG_DATA_RATE | DIGITAL_ISO15693_REQ_FLAG_INVENTORY | DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS; req->cmd = DIGITAL_CMD_ISO15693_INVENTORY_REQ; req->mask_len = 0; rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_iso15693_inv_res, NULL); if (rc) kfree_skb(skb); return rc; } |
1c7a4c24f
|
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 |
static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev) { struct sk_buff *skb; int rc; skb = digital_skb_alloc(ddev, 1); if (!skb) return -ENOMEM; *skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP; if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) digital_skb_add_crc_a(skb); rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_atr_req, NULL); if (rc) kfree_skb(skb); return rc; } static void digital_tg_recv_sel_req(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { rc = digital_skb_check_crc_a(resp); if (rc) { PROTOCOL_ERR("4.4.1.3"); goto exit; } } /* Silently ignore SEL_REQ content and send a SEL_RES for NFC-DEP */ rc = digital_tg_send_sel_res(ddev); exit: if (rc) digital_poll_next_tech(ddev); dev_kfree_skb(resp); } static int digital_tg_send_sdd_res(struct nfc_digital_dev *ddev) { struct sk_buff *skb; struct digital_sdd_res *sdd_res; int rc, i; skb = digital_skb_alloc(ddev, sizeof(struct digital_sdd_res)); if (!skb) return -ENOMEM; skb_put(skb, sizeof(struct digital_sdd_res)); sdd_res = (struct digital_sdd_res *)skb->data; sdd_res->nfcid1[0] = 0x08; get_random_bytes(sdd_res->nfcid1 + 1, 3); sdd_res->bcc = 0; for (i = 0; i < 4; i++) sdd_res->bcc ^= sdd_res->nfcid1[i]; rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sel_req, NULL); if (rc) kfree_skb(skb); return rc; } static void digital_tg_recv_sdd_req(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { u8 *sdd_req; int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } sdd_req = resp->data; if (resp->len < 2 || sdd_req[0] != DIGITAL_CMD_SEL_REQ_CL1 || sdd_req[1] != DIGITAL_SDD_REQ_SEL_PAR) { rc = -EINVAL; goto exit; } rc = digital_tg_send_sdd_res(ddev); exit: if (rc) digital_poll_next_tech(ddev); dev_kfree_skb(resp); } static int digital_tg_send_sens_res(struct nfc_digital_dev *ddev) { struct sk_buff *skb; u8 *sens_res; int rc; skb = digital_skb_alloc(ddev, 2); if (!skb) return -ENOMEM; sens_res = skb_put(skb, 2); sens_res[0] = (DIGITAL_SENS_RES_NFC_DEP >> 8) & 0xFF; sens_res[1] = DIGITAL_SENS_RES_NFC_DEP & 0xFF; rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_sdd_req, NULL); if (rc) kfree_skb(skb); return rc; } void digital_tg_recv_sens_req(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { u8 sens_req; int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } sens_req = resp->data[0]; if (!resp->len || (sens_req != DIGITAL_CMD_SENS_REQ && sens_req != DIGITAL_CMD_ALL_REQ)) { rc = -EINVAL; goto exit; } rc = digital_tg_send_sens_res(ddev); exit: if (rc) digital_poll_next_tech(ddev); dev_kfree_skb(resp); } |
180106bd0
|
859 |
static int digital_tg_send_sensf_res(struct nfc_digital_dev *ddev, |
1c7a4c24f
|
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 |
struct digital_sensf_req *sensf_req) { struct sk_buff *skb; u8 size; int rc; struct digital_sensf_res *sensf_res; size = sizeof(struct digital_sensf_res); if (sensf_req->rc != DIGITAL_SENSF_REQ_RC_NONE) size -= sizeof(sensf_res->rd); skb = digital_skb_alloc(ddev, size); if (!skb) return -ENOMEM; skb_put(skb, size); sensf_res = (struct digital_sensf_res *)skb->data; memset(sensf_res, 0, size); sensf_res->cmd = DIGITAL_CMD_SENSF_RES; sensf_res->nfcid2[0] = DIGITAL_SENSF_NFCID2_NFC_DEP_B1; sensf_res->nfcid2[1] = DIGITAL_SENSF_NFCID2_NFC_DEP_B2; get_random_bytes(&sensf_res->nfcid2[2], 6); switch (sensf_req->rc) { case DIGITAL_SENSF_REQ_RC_SC: sensf_res->rd[0] = sensf_req->sc1; sensf_res->rd[1] = sensf_req->sc2; break; case DIGITAL_SENSF_REQ_RC_AP: sensf_res->rd[0] = DIGITAL_SENSF_RES_RD_AP_B1; sensf_res->rd[1] = DIGITAL_SENSF_RES_RD_AP_B2; break; } *skb_push(skb, sizeof(u8)) = size + 1; if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) digital_skb_add_crc_f(skb); rc = digital_tg_send_cmd(ddev, skb, 300, digital_tg_recv_atr_req, NULL); if (rc) kfree_skb(skb); return rc; } void digital_tg_recv_sensf_req(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { struct digital_sensf_req *sensf_req; int rc; if (IS_ERR(resp)) { rc = PTR_ERR(resp); resp = NULL; goto exit; } if (!DIGITAL_DRV_CAPS_TG_CRC(ddev)) { rc = digital_skb_check_crc_f(resp); if (rc) { PROTOCOL_ERR("6.4.1.8"); goto exit; } } if (resp->len != sizeof(struct digital_sensf_req) + 1) { rc = -EINVAL; goto exit; } skb_pull(resp, 1); sensf_req = (struct digital_sensf_req *)resp->data; if (sensf_req->cmd != DIGITAL_CMD_SENSF_REQ) { rc = -EINVAL; goto exit; } rc = digital_tg_send_sensf_res(ddev, sensf_req); exit: if (rc) digital_poll_next_tech(ddev); dev_kfree_skb(resp); } int digital_tg_listen_nfca(struct nfc_digital_dev *ddev, u8 rf_tech) { int rc; rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); if (rc) return rc; rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); if (rc) return rc; return digital_tg_listen(ddev, 300, digital_tg_recv_sens_req, NULL); } int digital_tg_listen_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech) { int rc; u8 *nfcid2; rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); if (rc) return rc; rc = digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, NFC_DIGITAL_FRAMING_NFCF_NFC_DEP); if (rc) return rc; nfcid2 = kzalloc(NFC_NFCID2_MAXSIZE, GFP_KERNEL); if (!nfcid2) return -ENOMEM; nfcid2[0] = DIGITAL_SENSF_NFCID2_NFC_DEP_B1; nfcid2[1] = DIGITAL_SENSF_NFCID2_NFC_DEP_B2; get_random_bytes(nfcid2 + 2, NFC_NFCID2_MAXSIZE - 2); return digital_tg_listen(ddev, 300, digital_tg_recv_sensf_req, nfcid2); } |