2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
5 * Copyright (C) 2014 Marvell International Ltd.
6 * Copyright (C) 2011 Texas Instruments, Inc.
8 * Written by Ilan Elias <ilane@ti.com>
11 * This file is based on hci_event.c, which was written
12 * by Maxim Krasnyansky.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2
16 * as published by the Free Software Foundation
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see <http://www.gnu.org/licenses/>.
28 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
30 #include <linux/types.h>
31 #include <linux/interrupt.h>
32 #include <linux/bitops.h>
33 #include <linux/skbuff.h>
36 #include <net/nfc/nci.h>
37 #include <net/nfc/nci_core.h>
38 #include <linux/nfc.h>
40 /* Handle NCI Notification packets */
42 static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
45 struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
46 struct nci_conn_info *conn_info;
49 pr_debug("num_entries %d\n", ntf->num_entries);
51 if (ntf->num_entries > NCI_MAX_NUM_CONN)
52 ntf->num_entries = NCI_MAX_NUM_CONN;
54 /* update the credits */
55 for (i = 0; i < ntf->num_entries; i++) {
56 ntf->conn_entries[i].conn_id =
57 nci_conn_id(&ntf->conn_entries[i].conn_id);
59 pr_debug("entry[%d]: conn_id %d, credits %d\n",
60 i, ntf->conn_entries[i].conn_id,
61 ntf->conn_entries[i].credits);
63 conn_info = nci_get_conn_info_by_conn_id(ndev,
64 ntf->conn_entries[i].conn_id);
68 atomic_add(ntf->conn_entries[i].credits,
69 &conn_info->credits_cnt);
72 /* trigger the next tx */
73 if (!skb_queue_empty(&ndev->tx_q))
74 queue_work(ndev->tx_wq, &ndev->tx_work);
77 static void nci_core_generic_error_ntf_packet(struct nci_dev *ndev,
80 __u8 status = skb->data[0];
82 pr_debug("status 0x%x\n", status);
84 if (atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) {
85 /* Activation failed, so complete the request
86 (the state remains the same) */
87 nci_req_complete(ndev, status);
91 static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
94 struct nci_core_intf_error_ntf *ntf = (void *) skb->data;
96 ntf->conn_id = nci_conn_id(&ntf->conn_id);
98 pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id);
100 /* complete the data exchange transaction, if exists */
101 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
102 nci_data_exchange_complete(ndev, NULL, ntf->conn_id, -EIO);
105 static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
106 struct rf_tech_specific_params_nfca_poll *nfca_poll,
109 nfca_poll->sens_res = __le16_to_cpu(*((__le16 *)data));
112 nfca_poll->nfcid1_len = min_t(__u8, *data++, NFC_NFCID1_MAXSIZE);
114 pr_debug("sens_res 0x%x, nfcid1_len %d\n",
115 nfca_poll->sens_res, nfca_poll->nfcid1_len);
117 memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
118 data += nfca_poll->nfcid1_len;
120 nfca_poll->sel_res_len = *data++;
122 if (nfca_poll->sel_res_len != 0)
123 nfca_poll->sel_res = *data++;
125 pr_debug("sel_res_len %d, sel_res 0x%x\n",
126 nfca_poll->sel_res_len,
132 static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
133 struct rf_tech_specific_params_nfcb_poll *nfcb_poll,
136 nfcb_poll->sensb_res_len = min_t(__u8, *data++, NFC_SENSB_RES_MAXSIZE);
138 pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
140 memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len);
141 data += nfcb_poll->sensb_res_len;
146 static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
147 struct rf_tech_specific_params_nfcf_poll *nfcf_poll,
150 nfcf_poll->bit_rate = *data++;
151 nfcf_poll->sensf_res_len = min_t(__u8, *data++, NFC_SENSF_RES_MAXSIZE);
153 pr_debug("bit_rate %d, sensf_res_len %d\n",
154 nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
156 memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len);
157 data += nfcf_poll->sensf_res_len;
162 static __u8 *nci_extract_rf_params_nfcv_passive_poll(struct nci_dev *ndev,
163 struct rf_tech_specific_params_nfcv_poll *nfcv_poll,
167 nfcv_poll->dsfid = *data++;
168 memcpy(nfcv_poll->uid, data, NFC_ISO15693_UID_MAXSIZE);
169 data += NFC_ISO15693_UID_MAXSIZE;
173 static __u8 *nci_extract_rf_params_nfcf_passive_listen(struct nci_dev *ndev,
174 struct rf_tech_specific_params_nfcf_listen *nfcf_listen,
177 nfcf_listen->local_nfcid2_len = min_t(__u8, *data++,
179 memcpy(nfcf_listen->local_nfcid2, data, nfcf_listen->local_nfcid2_len);
180 data += nfcf_listen->local_nfcid2_len;
185 static __u32 nci_get_prop_rf_protocol(struct nci_dev *ndev, __u8 rf_protocol)
187 if (ndev->ops->get_rfprotocol)
188 return ndev->ops->get_rfprotocol(ndev, rf_protocol);
192 static int nci_add_new_protocol(struct nci_dev *ndev,
193 struct nfc_target *target,
195 __u8 rf_tech_and_mode,
198 struct rf_tech_specific_params_nfca_poll *nfca_poll;
199 struct rf_tech_specific_params_nfcb_poll *nfcb_poll;
200 struct rf_tech_specific_params_nfcf_poll *nfcf_poll;
201 struct rf_tech_specific_params_nfcv_poll *nfcv_poll;
204 if (rf_protocol == NCI_RF_PROTOCOL_T1T)
205 protocol = NFC_PROTO_JEWEL_MASK;
206 else if (rf_protocol == NCI_RF_PROTOCOL_T2T)
207 protocol = NFC_PROTO_MIFARE_MASK;
208 else if (rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
209 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE)
210 protocol = NFC_PROTO_ISO14443_MASK;
212 protocol = NFC_PROTO_ISO14443_B_MASK;
213 else if (rf_protocol == NCI_RF_PROTOCOL_T3T)
214 protocol = NFC_PROTO_FELICA_MASK;
215 else if (rf_protocol == NCI_RF_PROTOCOL_NFC_DEP)
216 protocol = NFC_PROTO_NFC_DEP_MASK;
217 else if (rf_protocol == NCI_RF_PROTOCOL_T5T)
218 protocol = NFC_PROTO_ISO15693_MASK;
220 protocol = nci_get_prop_rf_protocol(ndev, rf_protocol);
222 if (!(protocol & ndev->poll_prots)) {
223 pr_err("the target found does not have the desired protocol\n");
227 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) {
228 nfca_poll = (struct rf_tech_specific_params_nfca_poll *)params;
230 target->sens_res = nfca_poll->sens_res;
231 target->sel_res = nfca_poll->sel_res;
232 target->nfcid1_len = nfca_poll->nfcid1_len;
233 if (target->nfcid1_len > 0) {
234 memcpy(target->nfcid1, nfca_poll->nfcid1,
237 } else if (rf_tech_and_mode == NCI_NFC_B_PASSIVE_POLL_MODE) {
238 nfcb_poll = (struct rf_tech_specific_params_nfcb_poll *)params;
240 target->sensb_res_len = nfcb_poll->sensb_res_len;
241 if (target->sensb_res_len > 0) {
242 memcpy(target->sensb_res, nfcb_poll->sensb_res,
243 target->sensb_res_len);
245 } else if (rf_tech_and_mode == NCI_NFC_F_PASSIVE_POLL_MODE) {
246 nfcf_poll = (struct rf_tech_specific_params_nfcf_poll *)params;
248 target->sensf_res_len = nfcf_poll->sensf_res_len;
249 if (target->sensf_res_len > 0) {
250 memcpy(target->sensf_res, nfcf_poll->sensf_res,
251 target->sensf_res_len);
253 } else if (rf_tech_and_mode == NCI_NFC_V_PASSIVE_POLL_MODE) {
254 nfcv_poll = (struct rf_tech_specific_params_nfcv_poll *)params;
256 target->is_iso15693 = 1;
257 target->iso15693_dsfid = nfcv_poll->dsfid;
258 memcpy(target->iso15693_uid, nfcv_poll->uid, NFC_ISO15693_UID_MAXSIZE);
260 pr_err("unsupported rf_tech_and_mode 0x%x\n", rf_tech_and_mode);
264 target->supported_protocols |= protocol;
266 pr_debug("protocol 0x%x\n", protocol);
271 static void nci_add_new_target(struct nci_dev *ndev,
272 struct nci_rf_discover_ntf *ntf)
274 struct nfc_target *target;
277 for (i = 0; i < ndev->n_targets; i++) {
278 target = &ndev->targets[i];
279 if (target->logical_idx == ntf->rf_discovery_id) {
280 /* This target already exists, add the new protocol */
281 nci_add_new_protocol(ndev, target, ntf->rf_protocol,
282 ntf->rf_tech_and_mode,
283 &ntf->rf_tech_specific_params);
288 /* This is a new target, check if we've enough room */
289 if (ndev->n_targets == NCI_MAX_DISCOVERED_TARGETS) {
290 pr_debug("not enough room, ignoring new target...\n");
294 target = &ndev->targets[ndev->n_targets];
296 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
297 ntf->rf_tech_and_mode,
298 &ntf->rf_tech_specific_params);
300 target->logical_idx = ntf->rf_discovery_id;
303 pr_debug("logical idx %d, n_targets %d\n", target->logical_idx,
308 void nci_clear_target_list(struct nci_dev *ndev)
310 memset(ndev->targets, 0,
311 (sizeof(struct nfc_target)*NCI_MAX_DISCOVERED_TARGETS));
316 static void nci_rf_discover_ntf_packet(struct nci_dev *ndev,
319 struct nci_rf_discover_ntf ntf;
320 __u8 *data = skb->data;
321 bool add_target = true;
323 ntf.rf_discovery_id = *data++;
324 ntf.rf_protocol = *data++;
325 ntf.rf_tech_and_mode = *data++;
326 ntf.rf_tech_specific_params_len = *data++;
328 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
329 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
330 pr_debug("rf_tech_and_mode 0x%x\n", ntf.rf_tech_and_mode);
331 pr_debug("rf_tech_specific_params_len %d\n",
332 ntf.rf_tech_specific_params_len);
334 if (ntf.rf_tech_specific_params_len > 0) {
335 switch (ntf.rf_tech_and_mode) {
336 case NCI_NFC_A_PASSIVE_POLL_MODE:
337 data = nci_extract_rf_params_nfca_passive_poll(ndev,
338 &(ntf.rf_tech_specific_params.nfca_poll), data);
341 case NCI_NFC_B_PASSIVE_POLL_MODE:
342 data = nci_extract_rf_params_nfcb_passive_poll(ndev,
343 &(ntf.rf_tech_specific_params.nfcb_poll), data);
346 case NCI_NFC_F_PASSIVE_POLL_MODE:
347 data = nci_extract_rf_params_nfcf_passive_poll(ndev,
348 &(ntf.rf_tech_specific_params.nfcf_poll), data);
351 case NCI_NFC_V_PASSIVE_POLL_MODE:
352 data = nci_extract_rf_params_nfcv_passive_poll(ndev,
353 &(ntf.rf_tech_specific_params.nfcv_poll), data);
357 pr_err("unsupported rf_tech_and_mode 0x%x\n",
358 ntf.rf_tech_and_mode);
359 data += ntf.rf_tech_specific_params_len;
364 ntf.ntf_type = *data++;
365 pr_debug("ntf_type %d\n", ntf.ntf_type);
367 if (add_target == true)
368 nci_add_new_target(ndev, &ntf);
370 if (ntf.ntf_type == NCI_DISCOVER_NTF_TYPE_MORE) {
371 atomic_set(&ndev->state, NCI_W4_ALL_DISCOVERIES);
373 atomic_set(&ndev->state, NCI_W4_HOST_SELECT);
374 nfc_targets_found(ndev->nfc_dev, ndev->targets,
379 static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
380 struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
382 struct activation_params_nfca_poll_iso_dep *nfca_poll;
383 struct activation_params_nfcb_poll_iso_dep *nfcb_poll;
385 switch (ntf->activation_rf_tech_and_mode) {
386 case NCI_NFC_A_PASSIVE_POLL_MODE:
387 nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
388 nfca_poll->rats_res_len = min_t(__u8, *data++, 20);
389 pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
390 if (nfca_poll->rats_res_len > 0) {
391 memcpy(nfca_poll->rats_res,
392 data, nfca_poll->rats_res_len);
396 case NCI_NFC_B_PASSIVE_POLL_MODE:
397 nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
398 nfcb_poll->attrib_res_len = min_t(__u8, *data++, 50);
399 pr_debug("attrib_res_len %d\n", nfcb_poll->attrib_res_len);
400 if (nfcb_poll->attrib_res_len > 0) {
401 memcpy(nfcb_poll->attrib_res,
402 data, nfcb_poll->attrib_res_len);
407 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
408 ntf->activation_rf_tech_and_mode);
409 return NCI_STATUS_RF_PROTOCOL_ERROR;
412 return NCI_STATUS_OK;
415 static int nci_extract_activation_params_nfc_dep(struct nci_dev *ndev,
416 struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
418 struct activation_params_poll_nfc_dep *poll;
419 struct activation_params_listen_nfc_dep *listen;
421 switch (ntf->activation_rf_tech_and_mode) {
422 case NCI_NFC_A_PASSIVE_POLL_MODE:
423 case NCI_NFC_F_PASSIVE_POLL_MODE:
424 poll = &ntf->activation_params.poll_nfc_dep;
425 poll->atr_res_len = min_t(__u8, *data++,
426 NFC_ATR_RES_MAXSIZE - 2);
427 pr_debug("atr_res_len %d\n", poll->atr_res_len);
428 if (poll->atr_res_len > 0)
429 memcpy(poll->atr_res, data, poll->atr_res_len);
432 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
433 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
434 listen = &ntf->activation_params.listen_nfc_dep;
435 listen->atr_req_len = min_t(__u8, *data++,
436 NFC_ATR_REQ_MAXSIZE - 2);
437 pr_debug("atr_req_len %d\n", listen->atr_req_len);
438 if (listen->atr_req_len > 0)
439 memcpy(listen->atr_req, data, listen->atr_req_len);
443 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
444 ntf->activation_rf_tech_and_mode);
445 return NCI_STATUS_RF_PROTOCOL_ERROR;
448 return NCI_STATUS_OK;
451 static void nci_target_auto_activated(struct nci_dev *ndev,
452 struct nci_rf_intf_activated_ntf *ntf)
454 struct nfc_target *target;
457 target = &ndev->targets[ndev->n_targets];
459 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
460 ntf->activation_rf_tech_and_mode,
461 &ntf->rf_tech_specific_params);
465 target->logical_idx = ntf->rf_discovery_id;
468 pr_debug("logical idx %d, n_targets %d\n",
469 target->logical_idx, ndev->n_targets);
471 nfc_targets_found(ndev->nfc_dev, ndev->targets, ndev->n_targets);
474 static int nci_store_general_bytes_nfc_dep(struct nci_dev *ndev,
475 struct nci_rf_intf_activated_ntf *ntf)
477 ndev->remote_gb_len = 0;
479 if (ntf->activation_params_len <= 0)
480 return NCI_STATUS_OK;
482 switch (ntf->activation_rf_tech_and_mode) {
483 case NCI_NFC_A_PASSIVE_POLL_MODE:
484 case NCI_NFC_F_PASSIVE_POLL_MODE:
485 ndev->remote_gb_len = min_t(__u8,
486 (ntf->activation_params.poll_nfc_dep.atr_res_len
487 - NFC_ATR_RES_GT_OFFSET),
488 NFC_ATR_RES_GB_MAXSIZE);
489 memcpy(ndev->remote_gb,
490 (ntf->activation_params.poll_nfc_dep.atr_res
491 + NFC_ATR_RES_GT_OFFSET),
492 ndev->remote_gb_len);
495 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
496 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
497 ndev->remote_gb_len = min_t(__u8,
498 (ntf->activation_params.listen_nfc_dep.atr_req_len
499 - NFC_ATR_REQ_GT_OFFSET),
500 NFC_ATR_REQ_GB_MAXSIZE);
501 memcpy(ndev->remote_gb,
502 (ntf->activation_params.listen_nfc_dep.atr_req
503 + NFC_ATR_REQ_GT_OFFSET),
504 ndev->remote_gb_len);
508 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
509 ntf->activation_rf_tech_and_mode);
510 return NCI_STATUS_RF_PROTOCOL_ERROR;
513 return NCI_STATUS_OK;
516 static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
519 struct nci_conn_info *conn_info;
520 struct nci_rf_intf_activated_ntf ntf;
521 __u8 *data = skb->data;
522 int err = NCI_STATUS_OK;
524 ntf.rf_discovery_id = *data++;
525 ntf.rf_interface = *data++;
526 ntf.rf_protocol = *data++;
527 ntf.activation_rf_tech_and_mode = *data++;
528 ntf.max_data_pkt_payload_size = *data++;
529 ntf.initial_num_credits = *data++;
530 ntf.rf_tech_specific_params_len = *data++;
532 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
533 pr_debug("rf_interface 0x%x\n", ntf.rf_interface);
534 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
535 pr_debug("activation_rf_tech_and_mode 0x%x\n",
536 ntf.activation_rf_tech_and_mode);
537 pr_debug("max_data_pkt_payload_size 0x%x\n",
538 ntf.max_data_pkt_payload_size);
539 pr_debug("initial_num_credits 0x%x\n",
540 ntf.initial_num_credits);
541 pr_debug("rf_tech_specific_params_len %d\n",
542 ntf.rf_tech_specific_params_len);
544 if (ntf.rf_tech_specific_params_len > 0) {
545 switch (ntf.activation_rf_tech_and_mode) {
546 case NCI_NFC_A_PASSIVE_POLL_MODE:
547 data = nci_extract_rf_params_nfca_passive_poll(ndev,
548 &(ntf.rf_tech_specific_params.nfca_poll), data);
551 case NCI_NFC_B_PASSIVE_POLL_MODE:
552 data = nci_extract_rf_params_nfcb_passive_poll(ndev,
553 &(ntf.rf_tech_specific_params.nfcb_poll), data);
556 case NCI_NFC_F_PASSIVE_POLL_MODE:
557 data = nci_extract_rf_params_nfcf_passive_poll(ndev,
558 &(ntf.rf_tech_specific_params.nfcf_poll), data);
561 case NCI_NFC_V_PASSIVE_POLL_MODE:
562 data = nci_extract_rf_params_nfcv_passive_poll(ndev,
563 &(ntf.rf_tech_specific_params.nfcv_poll), data);
566 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
567 /* no RF technology specific parameters */
570 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
571 data = nci_extract_rf_params_nfcf_passive_listen(ndev,
572 &(ntf.rf_tech_specific_params.nfcf_listen),
577 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
578 ntf.activation_rf_tech_and_mode);
579 err = NCI_STATUS_RF_PROTOCOL_ERROR;
584 ntf.data_exch_rf_tech_and_mode = *data++;
585 ntf.data_exch_tx_bit_rate = *data++;
586 ntf.data_exch_rx_bit_rate = *data++;
587 ntf.activation_params_len = *data++;
589 pr_debug("data_exch_rf_tech_and_mode 0x%x\n",
590 ntf.data_exch_rf_tech_and_mode);
591 pr_debug("data_exch_tx_bit_rate 0x%x\n", ntf.data_exch_tx_bit_rate);
592 pr_debug("data_exch_rx_bit_rate 0x%x\n", ntf.data_exch_rx_bit_rate);
593 pr_debug("activation_params_len %d\n", ntf.activation_params_len);
595 if (ntf.activation_params_len > 0) {
596 switch (ntf.rf_interface) {
597 case NCI_RF_INTERFACE_ISO_DEP:
598 err = nci_extract_activation_params_iso_dep(ndev,
602 case NCI_RF_INTERFACE_NFC_DEP:
603 err = nci_extract_activation_params_nfc_dep(ndev,
607 case NCI_RF_INTERFACE_FRAME:
608 /* no activation params */
612 pr_err("unsupported rf_interface 0x%x\n",
614 err = NCI_STATUS_RF_PROTOCOL_ERROR;
620 if (err == NCI_STATUS_OK) {
621 conn_info = nci_get_conn_info_by_conn_id(ndev,
622 NCI_STATIC_RF_CONN_ID);
626 conn_info->max_pkt_payload_len = ntf.max_data_pkt_payload_size;
627 conn_info->initial_num_credits = ntf.initial_num_credits;
629 /* set the available credits to initial value */
630 atomic_set(&conn_info->credits_cnt,
631 conn_info->initial_num_credits);
633 /* store general bytes to be reported later in dep_link_up */
634 if (ntf.rf_interface == NCI_RF_INTERFACE_NFC_DEP) {
635 err = nci_store_general_bytes_nfc_dep(ndev, &ntf);
636 if (err != NCI_STATUS_OK)
637 pr_err("unable to store general bytes\n");
641 if (!(ntf.activation_rf_tech_and_mode & NCI_RF_TECH_MODE_LISTEN_MASK)) {
643 if (atomic_read(&ndev->state) == NCI_DISCOVERY) {
644 /* A single target was found and activated
646 atomic_set(&ndev->state, NCI_POLL_ACTIVE);
647 if (err == NCI_STATUS_OK)
648 nci_target_auto_activated(ndev, &ntf);
649 } else { /* ndev->state == NCI_W4_HOST_SELECT */
650 /* A selected target was activated, so complete the
652 atomic_set(&ndev->state, NCI_POLL_ACTIVE);
653 nci_req_complete(ndev, err);
657 atomic_set(&ndev->state, NCI_LISTEN_ACTIVE);
658 if (err == NCI_STATUS_OK &&
659 ntf.rf_protocol == NCI_RF_PROTOCOL_NFC_DEP) {
660 err = nfc_tm_activated(ndev->nfc_dev,
661 NFC_PROTO_NFC_DEP_MASK,
664 ndev->remote_gb_len);
665 if (err != NCI_STATUS_OK)
666 pr_err("error when signaling tm activation\n");
671 static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
674 struct nci_conn_info *conn_info;
675 struct nci_rf_deactivate_ntf *ntf = (void *) skb->data;
677 pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
680 nci_get_conn_info_by_conn_id(ndev, NCI_STATIC_RF_CONN_ID);
684 /* drop tx data queue */
685 skb_queue_purge(&ndev->tx_q);
687 /* drop partial rx data packet */
688 if (ndev->rx_data_reassembly) {
689 kfree_skb(ndev->rx_data_reassembly);
690 ndev->rx_data_reassembly = NULL;
693 /* complete the data exchange transaction, if exists */
694 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
695 nci_data_exchange_complete(ndev, NULL, NCI_STATIC_RF_CONN_ID,
699 case NCI_DEACTIVATE_TYPE_IDLE_MODE:
700 nci_clear_target_list(ndev);
701 atomic_set(&ndev->state, NCI_IDLE);
703 case NCI_DEACTIVATE_TYPE_SLEEP_MODE:
704 case NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE:
705 atomic_set(&ndev->state, NCI_W4_HOST_SELECT);
707 case NCI_DEACTIVATE_TYPE_DISCOVERY:
708 nci_clear_target_list(ndev);
709 atomic_set(&ndev->state, NCI_DISCOVERY);
713 nci_req_complete(ndev, NCI_STATUS_OK);
716 static void nci_nfcee_discover_ntf_packet(struct nci_dev *ndev,
719 u8 status = NCI_STATUS_OK;
720 struct nci_conn_info *conn_info;
721 struct nci_nfcee_discover_ntf *nfcee_ntf =
722 (struct nci_nfcee_discover_ntf *)skb->data;
726 conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
727 sizeof(struct nci_conn_info), GFP_KERNEL);
729 status = NCI_STATUS_REJECTED;
733 conn_info->id = nfcee_ntf->nfcee_id;
734 conn_info->conn_id = NCI_INVALID_CONN_ID;
736 INIT_LIST_HEAD(&conn_info->list);
737 list_add(&conn_info->list, &ndev->conn_info_list);
740 nci_req_complete(ndev, status);
743 void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
745 __u16 ntf_opcode = nci_opcode(skb->data);
747 pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
749 nci_opcode_gid(ntf_opcode),
750 nci_opcode_oid(ntf_opcode),
751 nci_plen(skb->data));
753 /* strip the nci control header */
754 skb_pull(skb, NCI_CTRL_HDR_SIZE);
756 switch (ntf_opcode) {
757 case NCI_OP_CORE_CONN_CREDITS_NTF:
758 nci_core_conn_credits_ntf_packet(ndev, skb);
761 case NCI_OP_CORE_GENERIC_ERROR_NTF:
762 nci_core_generic_error_ntf_packet(ndev, skb);
765 case NCI_OP_CORE_INTF_ERROR_NTF:
766 nci_core_conn_intf_error_ntf_packet(ndev, skb);
769 case NCI_OP_RF_DISCOVER_NTF:
770 nci_rf_discover_ntf_packet(ndev, skb);
773 case NCI_OP_RF_INTF_ACTIVATED_NTF:
774 nci_rf_intf_activated_ntf_packet(ndev, skb);
777 case NCI_OP_RF_DEACTIVATE_NTF:
778 nci_rf_deactivate_ntf_packet(ndev, skb);
781 case NCI_OP_NFCEE_DISCOVER_NTF:
782 nci_nfcee_discover_ntf_packet(ndev, skb);
785 pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);