2 * Copyright (C) 2012 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 #define pr_fmt(fmt) "hci: %s: " fmt, __func__
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/nfc.h>
25 #include <net/nfc/nfc.h>
26 #include <net/nfc/hci.h>
27 #include <net/nfc/llc.h>
31 /* Largest headroom needed for outgoing HCI commands */
32 #define HCI_CMDS_HEADROOM 1
34 int nfc_hci_result_to_errno(u8 result)
39 case NFC_HCI_ANY_E_REG_PAR_UNKNOWN:
41 case NFC_HCI_ANY_E_TIMEOUT:
47 EXPORT_SYMBOL(nfc_hci_result_to_errno);
49 static void nfc_hci_msg_tx_work(struct work_struct *work)
51 struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
57 mutex_lock(&hdev->msg_tx_mutex);
58 if (hdev->shutting_down)
61 if (hdev->cmd_pending_msg) {
62 if (timer_pending(&hdev->cmd_timer) == 0) {
63 if (hdev->cmd_pending_msg->cb)
64 hdev->cmd_pending_msg->cb(hdev->
69 kfree(hdev->cmd_pending_msg);
70 hdev->cmd_pending_msg = NULL;
77 if (list_empty(&hdev->msg_tx_queue))
80 msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg, msg_l);
81 list_del(&msg->msg_l);
83 pr_debug("msg_tx_queue has a cmd to send\n");
84 while ((skb = skb_dequeue(&msg->msg_frags)) != NULL) {
85 r = nfc_llc_xmit_from_hci(hdev->llc, skb);
88 skb_queue_purge(&msg->msg_frags);
90 msg->cb(msg->cb_context, NULL, r);
99 if (msg->wait_response == false) {
104 hdev->cmd_pending_msg = msg;
105 mod_timer(&hdev->cmd_timer, jiffies +
106 msecs_to_jiffies(hdev->cmd_pending_msg->completion_delay));
109 mutex_unlock(&hdev->msg_tx_mutex);
112 static void nfc_hci_msg_rx_work(struct work_struct *work)
114 struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
117 struct hcp_message *message;
122 while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
124 skb_pull(skb, NFC_HCI_HCP_PACKET_HEADER_LEN);
125 message = (struct hcp_message *)skb->data;
126 type = HCP_MSG_GET_TYPE(message->header);
127 instruction = HCP_MSG_GET_CMD(message->header);
128 skb_pull(skb, NFC_HCI_HCP_MESSAGE_HEADER_LEN);
130 nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, skb);
134 static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err,
137 del_timer_sync(&hdev->cmd_timer);
139 if (hdev->cmd_pending_msg->cb)
140 hdev->cmd_pending_msg->cb(hdev->cmd_pending_msg->cb_context,
145 kfree(hdev->cmd_pending_msg);
146 hdev->cmd_pending_msg = NULL;
148 schedule_work(&hdev->msg_tx_work);
151 void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
154 mutex_lock(&hdev->msg_tx_mutex);
156 if (hdev->cmd_pending_msg == NULL) {
161 __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb);
164 mutex_unlock(&hdev->msg_tx_mutex);
167 void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
173 u32 nfc_hci_sak_to_protocol(u8 sak)
175 switch (NFC_HCI_TYPE_A_SEL_PROT(sak)) {
176 case NFC_HCI_TYPE_A_SEL_PROT_MIFARE:
177 return NFC_PROTO_MIFARE_MASK;
178 case NFC_HCI_TYPE_A_SEL_PROT_ISO14443:
179 return NFC_PROTO_ISO14443_MASK;
180 case NFC_HCI_TYPE_A_SEL_PROT_DEP:
181 return NFC_PROTO_NFC_DEP_MASK;
182 case NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP:
183 return NFC_PROTO_ISO14443_MASK | NFC_PROTO_NFC_DEP_MASK;
188 EXPORT_SYMBOL(nfc_hci_sak_to_protocol);
190 int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
192 struct nfc_target *targets;
193 struct sk_buff *atqa_skb = NULL;
194 struct sk_buff *sak_skb = NULL;
195 struct sk_buff *uid_skb = NULL;
198 pr_debug("from gate %d\n", gate);
200 targets = kzalloc(sizeof(struct nfc_target), GFP_KERNEL);
205 case NFC_HCI_RF_READER_A_GATE:
206 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
207 NFC_HCI_RF_READER_A_ATQA, &atqa_skb);
211 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
212 NFC_HCI_RF_READER_A_SAK, &sak_skb);
216 if (atqa_skb->len != 2 || sak_skb->len != 1) {
221 targets->supported_protocols =
222 nfc_hci_sak_to_protocol(sak_skb->data[0]);
223 if (targets->supported_protocols == 0xffffffff) {
228 targets->sens_res = be16_to_cpu(*(u16 *)atqa_skb->data);
229 targets->sel_res = sak_skb->data[0];
231 r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
232 NFC_HCI_RF_READER_A_UID, &uid_skb);
236 if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
241 memcpy(targets->nfcid1, uid_skb->data, uid_skb->len);
242 targets->nfcid1_len = uid_skb->len;
244 if (hdev->ops->complete_target_discovered) {
245 r = hdev->ops->complete_target_discovered(hdev, gate,
251 case NFC_HCI_RF_READER_B_GATE:
252 targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
255 if (hdev->ops->target_from_gate)
256 r = hdev->ops->target_from_gate(hdev, gate, targets);
262 if (hdev->ops->complete_target_discovered) {
263 r = hdev->ops->complete_target_discovered(hdev, gate,
271 /* if driver set the new gate, we will skip the old one */
272 if (targets->hci_reader_gate == 0x00)
273 targets->hci_reader_gate = gate;
275 r = nfc_targets_found(hdev->ndev, targets, 1);
285 EXPORT_SYMBOL(nfc_hci_target_discovered);
287 void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
291 u8 gate = nfc_hci_pipe2gate(hdev, pipe);
294 pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
298 if (hdev->ops->event_received) {
299 r = hdev->ops->event_received(hdev, gate, event, skb);
305 case NFC_HCI_EVT_TARGET_DISCOVERED:
306 if (skb->len < 1) { /* no status data? */
311 if (skb->data[0] == 3) {
312 /* TODO: Multiple targets in field, none activated
313 * poll is supposedly stopped, but there is no
314 * single target to activate, so nothing to report
316 * if we need to restart poll, we must save the
317 * protocols from the initial poll and reuse here.
321 if (skb->data[0] != 0) {
326 r = nfc_hci_target_discovered(hdev, gate);
329 pr_info("Discarded unknown event %x to gate %x\n", event, gate);
339 nfc_hci_driver_failure(hdev, r);
342 static void nfc_hci_cmd_timeout(unsigned long data)
344 struct nfc_hci_dev *hdev = (struct nfc_hci_dev *)data;
346 schedule_work(&hdev->msg_tx_work);
349 static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count,
350 struct nfc_hci_gate *gates)
353 while (gate_count--) {
354 r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
355 gates->gate, gates->pipe);
364 static int hci_dev_session_init(struct nfc_hci_dev *hdev)
366 struct sk_buff *skb = NULL;
369 if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE)
372 r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
373 hdev->init_data.gates[0].gate,
374 hdev->init_data.gates[0].pipe);
378 r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE,
379 NFC_HCI_ADMIN_SESSION_IDENTITY, &skb);
383 if (skb->len && skb->len == strlen(hdev->init_data.session_id))
384 if (memcmp(hdev->init_data.session_id, skb->data,
386 /* TODO ELa: restore gate<->pipe table from
388 * note: it doesn't seem possible to get the chip
389 * currently open gate/pipe table.
390 * It is only possible to obtain the supported
395 * For now, always do a full initialization */
398 r = nfc_hci_disconnect_all_gates(hdev);
402 r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count,
403 hdev->init_data.gates);
407 r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
408 NFC_HCI_ADMIN_SESSION_IDENTITY,
409 hdev->init_data.session_id,
410 strlen(hdev->init_data.session_id));
415 nfc_hci_disconnect_all_gates(hdev);
423 static int hci_dev_version(struct nfc_hci_dev *hdev)
428 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
429 NFC_HCI_ID_MGMT_VERSION_SW, &skb);
430 if (r == -EOPNOTSUPP) {
431 pr_info("Software/Hardware info not available\n");
442 hdev->sw_romlib = (skb->data[0] & 0xf0) >> 4;
443 hdev->sw_patch = skb->data[0] & 0x0f;
444 hdev->sw_flashlib_major = skb->data[1];
445 hdev->sw_flashlib_minor = skb->data[2];
449 r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
450 NFC_HCI_ID_MGMT_VERSION_HW, &skb);
459 hdev->hw_derivative = (skb->data[0] & 0xe0) >> 5;
460 hdev->hw_version = skb->data[0] & 0x1f;
461 hdev->hw_mpw = (skb->data[1] & 0xc0) >> 6;
462 hdev->hw_software = skb->data[1] & 0x3f;
463 hdev->hw_bsid = skb->data[2];
467 pr_info("SOFTWARE INFO:\n");
468 pr_info("RomLib : %d\n", hdev->sw_romlib);
469 pr_info("Patch : %d\n", hdev->sw_patch);
470 pr_info("FlashLib Major : %d\n", hdev->sw_flashlib_major);
471 pr_info("FlashLib Minor : %d\n", hdev->sw_flashlib_minor);
472 pr_info("HARDWARE INFO:\n");
473 pr_info("Derivative : %d\n", hdev->hw_derivative);
474 pr_info("HW Version : %d\n", hdev->hw_version);
475 pr_info("#MPW : %d\n", hdev->hw_mpw);
476 pr_info("Software : %d\n", hdev->hw_software);
477 pr_info("BSID Version : %d\n", hdev->hw_bsid);
482 static int hci_dev_up(struct nfc_dev *nfc_dev)
484 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
487 if (hdev->ops->open) {
488 r = hdev->ops->open(hdev);
493 r = nfc_llc_start(hdev->llc);
497 r = hci_dev_session_init(hdev);
501 r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
502 NFC_HCI_EVT_END_OPERATION, NULL, 0);
506 if (hdev->ops->hci_ready) {
507 r = hdev->ops->hci_ready(hdev);
512 r = hci_dev_version(hdev);
519 nfc_llc_stop(hdev->llc);
522 if (hdev->ops->close)
523 hdev->ops->close(hdev);
528 static int hci_dev_down(struct nfc_dev *nfc_dev)
530 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
532 nfc_llc_stop(hdev->llc);
534 if (hdev->ops->close)
535 hdev->ops->close(hdev);
537 memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
542 static int hci_start_poll(struct nfc_dev *nfc_dev,
543 u32 im_protocols, u32 tm_protocols)
545 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
547 if (hdev->ops->start_poll)
548 return hdev->ops->start_poll(hdev, im_protocols, tm_protocols);
550 return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
551 NFC_HCI_EVT_READER_REQUESTED,
555 static void hci_stop_poll(struct nfc_dev *nfc_dev)
557 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
559 nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
560 NFC_HCI_EVT_END_OPERATION, NULL, 0);
563 static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
564 __u8 comm_mode, __u8 *gb, size_t gb_len)
566 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
568 if (!hdev->ops->dep_link_up)
571 return hdev->ops->dep_link_up(hdev, target, comm_mode,
575 static int hci_dep_link_down(struct nfc_dev *nfc_dev)
577 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
579 if (!hdev->ops->dep_link_down)
582 return hdev->ops->dep_link_down(hdev);
585 static int hci_activate_target(struct nfc_dev *nfc_dev,
586 struct nfc_target *target, u32 protocol)
591 static void hci_deactivate_target(struct nfc_dev *nfc_dev,
592 struct nfc_target *target)
596 #define HCI_CB_TYPE_TRANSCEIVE 1
598 static void hci_transceive_cb(void *context, struct sk_buff *skb, int err)
600 struct nfc_hci_dev *hdev = context;
602 switch (hdev->async_cb_type) {
603 case HCI_CB_TYPE_TRANSCEIVE:
605 * TODO: Check RF Error indicator to make sure data is valid.
606 * It seems that HCI cmd can complete without error, but data
607 * can be invalid if an RF error occured? Ignore for now.
610 skb_trim(skb, skb->len - 1); /* RF Err ind */
612 hdev->async_cb(hdev->async_cb_context, skb, err);
621 static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
622 struct sk_buff *skb, data_exchange_cb_t cb,
625 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
628 pr_debug("target_idx=%d\n", target->idx);
630 switch (target->hci_reader_gate) {
631 case NFC_HCI_RF_READER_A_GATE:
632 case NFC_HCI_RF_READER_B_GATE:
633 if (hdev->ops->im_transceive) {
634 r = hdev->ops->im_transceive(hdev, target, skb, cb,
636 if (r <= 0) /* handled */
640 *skb_push(skb, 1) = 0; /* CTR, see spec:10.2.2.1 */
642 hdev->async_cb_type = HCI_CB_TYPE_TRANSCEIVE;
644 hdev->async_cb_context = cb_context;
646 r = nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
647 NFC_HCI_WR_XCHG_DATA, skb->data,
648 skb->len, hci_transceive_cb, hdev);
651 if (hdev->ops->im_transceive) {
652 r = hdev->ops->im_transceive(hdev, target, skb, cb,
667 static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
669 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
671 if (!hdev->ops->tm_send) {
676 return hdev->ops->tm_send(hdev, skb);
679 static int hci_check_presence(struct nfc_dev *nfc_dev,
680 struct nfc_target *target)
682 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
684 if (!hdev->ops->check_presence)
687 return hdev->ops->check_presence(hdev, target);
690 static int hci_discover_se(struct nfc_dev *nfc_dev)
692 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
694 if (hdev->ops->discover_se)
695 return hdev->ops->discover_se(hdev);
700 static int hci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx)
702 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
704 if (hdev->ops->enable_se)
705 return hdev->ops->enable_se(hdev, se_idx);
710 static int hci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx)
712 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
714 if (hdev->ops->disable_se)
715 return hdev->ops->disable_se(hdev, se_idx);
720 static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err)
722 mutex_lock(&hdev->msg_tx_mutex);
724 if (hdev->cmd_pending_msg == NULL) {
725 nfc_driver_failure(hdev->ndev, err);
729 __nfc_hci_cmd_completion(hdev, err, NULL);
732 mutex_unlock(&hdev->msg_tx_mutex);
735 static void nfc_hci_llc_failure(struct nfc_hci_dev *hdev, int err)
737 nfc_hci_failure(hdev, err);
740 static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
742 struct hcp_packet *packet;
745 struct sk_buff *hcp_skb;
747 struct sk_buff *frag_skb;
750 packet = (struct hcp_packet *)skb->data;
751 if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) {
752 skb_queue_tail(&hdev->rx_hcp_frags, skb);
756 /* it's the last fragment. Does it need re-aggregation? */
757 if (skb_queue_len(&hdev->rx_hcp_frags)) {
758 pipe = packet->header & NFC_HCI_FRAGMENT;
759 skb_queue_tail(&hdev->rx_hcp_frags, skb);
762 skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
763 msg_len += (frag_skb->len -
764 NFC_HCI_HCP_PACKET_HEADER_LEN);
767 hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN +
768 msg_len, GFP_KERNEL);
769 if (hcp_skb == NULL) {
770 nfc_hci_failure(hdev, -ENOMEM);
774 *skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
776 skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
777 msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN;
778 memcpy(skb_put(hcp_skb, msg_len),
779 frag_skb->data + NFC_HCI_HCP_PACKET_HEADER_LEN,
783 skb_queue_purge(&hdev->rx_hcp_frags);
785 packet->header &= NFC_HCI_FRAGMENT;
789 /* if this is a response, dispatch immediately to
790 * unblock waiting cmd context. Otherwise, enqueue to dispatch
791 * in separate context where handler can also execute command.
793 packet = (struct hcp_packet *)hcp_skb->data;
794 type = HCP_MSG_GET_TYPE(packet->message.header);
795 if (type == NFC_HCI_HCP_RESPONSE) {
796 pipe = packet->header;
797 instruction = HCP_MSG_GET_CMD(packet->message.header);
798 skb_pull(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN +
799 NFC_HCI_HCP_MESSAGE_HEADER_LEN);
800 nfc_hci_hcp_message_rx(hdev, pipe, type, instruction, hcp_skb);
802 skb_queue_tail(&hdev->msg_rx_queue, hcp_skb);
803 schedule_work(&hdev->msg_rx_work);
807 static int hci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name)
809 struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
811 if (!hdev->ops->fw_download)
814 return hdev->ops->fw_download(hdev, firmware_name);
817 static struct nfc_ops hci_nfc_ops = {
818 .dev_up = hci_dev_up,
819 .dev_down = hci_dev_down,
820 .start_poll = hci_start_poll,
821 .stop_poll = hci_stop_poll,
822 .dep_link_up = hci_dep_link_up,
823 .dep_link_down = hci_dep_link_down,
824 .activate_target = hci_activate_target,
825 .deactivate_target = hci_deactivate_target,
826 .im_transceive = hci_transceive,
827 .tm_send = hci_tm_send,
828 .check_presence = hci_check_presence,
829 .fw_download = hci_fw_download,
830 .discover_se = hci_discover_se,
831 .enable_se = hci_enable_se,
832 .disable_se = hci_disable_se,
835 struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
836 struct nfc_hci_init_data *init_data,
837 unsigned long quirks,
839 const char *llc_name,
842 int max_link_payload)
844 struct nfc_hci_dev *hdev;
846 if (ops->xmit == NULL)
852 hdev = kzalloc(sizeof(struct nfc_hci_dev), GFP_KERNEL);
856 hdev->llc = nfc_llc_allocate(llc_name, hdev, ops->xmit,
857 nfc_hci_recv_from_llc, tx_headroom,
858 tx_tailroom, nfc_hci_llc_failure);
859 if (hdev->llc == NULL) {
864 hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols,
865 tx_headroom + HCI_CMDS_HEADROOM,
868 nfc_llc_free(hdev->llc);
874 hdev->max_data_link_payload = max_link_payload;
875 hdev->init_data = *init_data;
877 nfc_set_drvdata(hdev->ndev, hdev);
879 memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
881 hdev->quirks = quirks;
885 EXPORT_SYMBOL(nfc_hci_allocate_device);
887 void nfc_hci_free_device(struct nfc_hci_dev *hdev)
889 nfc_free_device(hdev->ndev);
890 nfc_llc_free(hdev->llc);
893 EXPORT_SYMBOL(nfc_hci_free_device);
895 int nfc_hci_register_device(struct nfc_hci_dev *hdev)
897 mutex_init(&hdev->msg_tx_mutex);
899 INIT_LIST_HEAD(&hdev->msg_tx_queue);
901 INIT_WORK(&hdev->msg_tx_work, nfc_hci_msg_tx_work);
903 init_timer(&hdev->cmd_timer);
904 hdev->cmd_timer.data = (unsigned long)hdev;
905 hdev->cmd_timer.function = nfc_hci_cmd_timeout;
907 skb_queue_head_init(&hdev->rx_hcp_frags);
909 INIT_WORK(&hdev->msg_rx_work, nfc_hci_msg_rx_work);
911 skb_queue_head_init(&hdev->msg_rx_queue);
913 return nfc_register_device(hdev->ndev);
915 EXPORT_SYMBOL(nfc_hci_register_device);
917 void nfc_hci_unregister_device(struct nfc_hci_dev *hdev)
919 struct hci_msg *msg, *n;
921 mutex_lock(&hdev->msg_tx_mutex);
923 if (hdev->cmd_pending_msg) {
924 if (hdev->cmd_pending_msg->cb)
925 hdev->cmd_pending_msg->cb(
926 hdev->cmd_pending_msg->cb_context,
928 kfree(hdev->cmd_pending_msg);
929 hdev->cmd_pending_msg = NULL;
932 hdev->shutting_down = true;
934 mutex_unlock(&hdev->msg_tx_mutex);
936 del_timer_sync(&hdev->cmd_timer);
937 cancel_work_sync(&hdev->msg_tx_work);
939 cancel_work_sync(&hdev->msg_rx_work);
941 nfc_unregister_device(hdev->ndev);
943 skb_queue_purge(&hdev->rx_hcp_frags);
944 skb_queue_purge(&hdev->msg_rx_queue);
946 list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) {
947 list_del(&msg->msg_l);
948 skb_queue_purge(&msg->msg_frags);
952 EXPORT_SYMBOL(nfc_hci_unregister_device);
954 void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata)
956 hdev->clientdata = clientdata;
958 EXPORT_SYMBOL(nfc_hci_set_clientdata);
960 void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev)
962 return hdev->clientdata;
964 EXPORT_SYMBOL(nfc_hci_get_clientdata);
966 void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
968 nfc_hci_failure(hdev, err);
970 EXPORT_SYMBOL(nfc_hci_driver_failure);
972 void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
974 nfc_llc_rcv_from_drv(hdev->llc, skb);
976 EXPORT_SYMBOL(nfc_hci_recv_frame);
978 static int __init nfc_hci_init(void)
980 return nfc_llc_init();
983 static void __exit nfc_hci_exit(void)
988 subsys_initcall(nfc_hci_init);
989 module_exit(nfc_hci_exit);
991 MODULE_LICENSE("GPL");
992 MODULE_DESCRIPTION("NFC HCI Core");