2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
26 static inline void ath10k_htc_send_complete_check(struct ath10k_htc_ep *ep,
30 * Check whether HIF has any prior sends that have finished,
31 * have not had the post-processing done.
33 ath10k_hif_send_complete_check(ep->htc->ar, ep->ul_pipe_id, force);
36 static void ath10k_htc_control_tx_complete(struct ath10k *ar,
42 static struct sk_buff *ath10k_htc_build_tx_ctrl_skb(void *ar)
45 struct ath10k_skb_cb *skb_cb;
47 skb = dev_alloc_skb(ATH10K_HTC_CONTROL_BUFFER_SIZE);
49 ath10k_warn("Unable to allocate ctrl skb\n");
53 skb_reserve(skb, 20); /* FIXME: why 20 bytes? */
54 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
56 skb_cb = ATH10K_SKB_CB(skb);
57 memset(skb_cb, 0, sizeof(*skb_cb));
59 ath10k_dbg(ATH10K_DBG_HTC, "%s: skb %p\n", __func__, skb);
63 static inline void ath10k_htc_restore_tx_skb(struct ath10k_htc *htc,
66 ath10k_skb_unmap(htc->ar->dev, skb);
67 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
70 static void ath10k_htc_notify_tx_completion(struct ath10k_htc_ep *ep,
73 ath10k_dbg(ATH10K_DBG_HTC, "%s: ep %d skb %p\n", __func__,
76 ath10k_htc_restore_tx_skb(ep->htc, skb);
78 if (!ep->ep_ops.ep_tx_complete) {
79 ath10k_warn("no tx handler for eid %d\n", ep->eid);
80 dev_kfree_skb_any(skb);
84 ep->ep_ops.ep_tx_complete(ep->htc->ar, skb);
87 /* assumes tx_lock is held */
88 static bool ath10k_htc_ep_need_credit_update(struct ath10k_htc_ep *ep)
90 if (!ep->tx_credit_flow_enabled)
92 if (ep->tx_credits >= ep->tx_credits_per_max_message)
95 ath10k_dbg(ATH10K_DBG_HTC, "HTC: endpoint %d needs credit update\n",
100 static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
103 struct ath10k_htc_hdr *hdr;
105 hdr = (struct ath10k_htc_hdr *)skb->data;
108 hdr->len = __cpu_to_le16(skb->len - sizeof(*hdr));
111 spin_lock_bh(&ep->htc->tx_lock);
112 hdr->seq_no = ep->seq_no++;
114 if (ath10k_htc_ep_need_credit_update(ep))
115 hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
117 spin_unlock_bh(&ep->htc->tx_lock);
120 int ath10k_htc_send(struct ath10k_htc *htc,
121 enum ath10k_htc_ep_id eid,
124 struct ath10k_htc_ep *ep = &htc->endpoint[eid];
128 if (htc->ar->state == ATH10K_STATE_WEDGED)
131 if (eid >= ATH10K_HTC_EP_COUNT) {
132 ath10k_warn("Invalid endpoint id: %d\n", eid);
136 /* FIXME: This looks ugly, can we fix it? */
137 spin_lock_bh(&htc->tx_lock);
139 spin_unlock_bh(&htc->tx_lock);
142 spin_unlock_bh(&htc->tx_lock);
144 skb_push(skb, sizeof(struct ath10k_htc_hdr));
146 if (ep->tx_credit_flow_enabled) {
147 credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);
148 spin_lock_bh(&htc->tx_lock);
149 if (ep->tx_credits < credits) {
150 spin_unlock_bh(&htc->tx_lock);
154 ep->tx_credits -= credits;
155 spin_unlock_bh(&htc->tx_lock);
158 ath10k_htc_prepare_tx_skb(ep, skb);
160 ret = ath10k_skb_map(htc->ar->dev, skb);
164 ret = ath10k_hif_send_head(htc->ar, ep->ul_pipe_id, ep->eid,
172 ath10k_skb_unmap(htc->ar->dev, skb);
174 if (ep->tx_credit_flow_enabled) {
175 spin_lock_bh(&htc->tx_lock);
176 ep->tx_credits += credits;
177 spin_unlock_bh(&htc->tx_lock);
179 if (ep->ep_ops.ep_tx_credits)
180 ep->ep_ops.ep_tx_credits(htc->ar);
183 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
187 static int ath10k_htc_tx_completion_handler(struct ath10k *ar,
191 struct ath10k_htc *htc = &ar->htc;
192 struct ath10k_htc_ep *ep = &htc->endpoint[eid];
194 ath10k_htc_notify_tx_completion(ep, skb);
195 /* the skb now belongs to the completion handler */
205 ath10k_htc_process_credit_report(struct ath10k_htc *htc,
206 const struct ath10k_htc_credit_report *report,
208 enum ath10k_htc_ep_id eid)
210 struct ath10k_htc_ep *ep;
213 if (len % sizeof(*report))
214 ath10k_warn("Uneven credit report len %d", len);
216 n_reports = len / sizeof(*report);
218 spin_lock_bh(&htc->tx_lock);
219 for (i = 0; i < n_reports; i++, report++) {
220 if (report->eid >= ATH10K_HTC_EP_COUNT)
223 ath10k_dbg(ATH10K_DBG_HTC, "ep %d got %d credits\n",
224 report->eid, report->credits);
226 ep = &htc->endpoint[report->eid];
227 ep->tx_credits += report->credits;
229 if (ep->ep_ops.ep_tx_credits) {
230 spin_unlock_bh(&htc->tx_lock);
231 ep->ep_ops.ep_tx_credits(htc->ar);
232 spin_lock_bh(&htc->tx_lock);
235 spin_unlock_bh(&htc->tx_lock);
238 static int ath10k_htc_process_trailer(struct ath10k_htc *htc,
241 enum ath10k_htc_ep_id src_eid)
244 struct ath10k_htc_record *record;
249 orig_buffer = buffer;
250 orig_length = length;
253 record = (struct ath10k_htc_record *)buffer;
255 if (length < sizeof(record->hdr)) {
260 if (record->hdr.len > length) {
261 /* no room left in buffer for record */
262 ath10k_warn("Invalid record length: %d\n",
268 switch (record->hdr.id) {
269 case ATH10K_HTC_RECORD_CREDITS:
270 len = sizeof(struct ath10k_htc_credit_report);
271 if (record->hdr.len < len) {
272 ath10k_warn("Credit report too long\n");
276 ath10k_htc_process_credit_report(htc,
277 record->credit_report,
282 ath10k_warn("Unhandled record: id:%d length:%d\n",
283 record->hdr.id, record->hdr.len);
290 /* multiple records may be present in a trailer */
291 buffer += sizeof(record->hdr) + record->hdr.len;
292 length -= sizeof(record->hdr) + record->hdr.len;
296 ath10k_dbg_dump(ATH10K_DBG_HTC, "htc rx bad trailer", "",
297 orig_buffer, orig_length);
302 static int ath10k_htc_rx_completion_handler(struct ath10k *ar,
307 struct ath10k_htc *htc = &ar->htc;
308 struct ath10k_htc_hdr *hdr;
309 struct ath10k_htc_ep *ep;
314 bool trailer_present;
316 hdr = (struct ath10k_htc_hdr *)skb->data;
317 skb_pull(skb, sizeof(*hdr));
321 if (eid >= ATH10K_HTC_EP_COUNT) {
322 ath10k_warn("HTC Rx: invalid eid %d\n", eid);
323 ath10k_dbg_dump(ATH10K_DBG_HTC, "htc bad header", "",
329 ep = &htc->endpoint[eid];
332 * If this endpoint that received a message from the target has
333 * a to-target HIF pipe whose send completions are polled rather
334 * than interrupt-driven, this is a good point to ask HIF to check
335 * whether it has any completed sends to handle.
337 if (ep->ul_is_polled)
338 ath10k_htc_send_complete_check(ep, 1);
340 payload_len = __le16_to_cpu(hdr->len);
342 if (payload_len + sizeof(*hdr) > ATH10K_HTC_MAX_LEN) {
343 ath10k_warn("HTC rx frame too long, len: %zu\n",
344 payload_len + sizeof(*hdr));
345 ath10k_dbg_dump(ATH10K_DBG_HTC, "htc bad rx pkt len", "",
351 if (skb->len < payload_len) {
352 ath10k_dbg(ATH10K_DBG_HTC,
353 "HTC Rx: insufficient length, got %d, expected %d\n",
354 skb->len, payload_len);
355 ath10k_dbg_dump(ATH10K_DBG_HTC, "htc bad rx pkt len",
356 "", hdr, sizeof(*hdr));
361 /* get flags to check for trailer */
362 trailer_present = hdr->flags & ATH10K_HTC_FLAG_TRAILER_PRESENT;
363 if (trailer_present) {
366 trailer_len = hdr->trailer_len;
367 min_len = sizeof(struct ath10k_ath10k_htc_record_hdr);
369 if ((trailer_len < min_len) ||
370 (trailer_len > payload_len)) {
371 ath10k_warn("Invalid trailer length: %d\n",
378 trailer += sizeof(*hdr);
379 trailer += payload_len;
380 trailer -= trailer_len;
381 status = ath10k_htc_process_trailer(htc, trailer,
382 trailer_len, hdr->eid);
386 skb_trim(skb, skb->len - trailer_len);
389 if (((int)payload_len - (int)trailer_len) <= 0)
390 /* zero length packet with trailer data, just drop these */
393 if (eid == ATH10K_HTC_EP_0) {
394 struct ath10k_htc_msg *msg = (struct ath10k_htc_msg *)skb->data;
396 switch (__le16_to_cpu(msg->hdr.message_id)) {
398 /* handle HTC control message */
399 if (completion_done(&htc->ctl_resp)) {
401 * this is a fatal error, target should not be
402 * sending unsolicited messages on the ep 0
404 ath10k_warn("HTC rx ctrl still processing\n");
406 complete(&htc->ctl_resp);
410 htc->control_resp_len =
412 ATH10K_HTC_MAX_CTRL_MSG_LEN);
414 memcpy(htc->control_resp_buffer, skb->data,
415 htc->control_resp_len);
417 complete(&htc->ctl_resp);
419 case ATH10K_HTC_MSG_SEND_SUSPEND_COMPLETE:
420 htc->htc_ops.target_send_suspend_complete(ar);
425 ath10k_dbg(ATH10K_DBG_HTC, "htc rx completion ep %d skb %p\n",
427 ep->ep_ops.ep_rx_complete(ar, skb);
429 /* skb is now owned by the rx completion handler */
437 static void ath10k_htc_control_rx_complete(struct ath10k *ar,
440 /* This is unexpected. FW is not supposed to send regular rx on this
442 ath10k_warn("unexpected htc rx\n");
450 static const char *htc_service_name(enum ath10k_htc_svc_id id)
453 case ATH10K_HTC_SVC_ID_RESERVED:
455 case ATH10K_HTC_SVC_ID_RSVD_CTRL:
457 case ATH10K_HTC_SVC_ID_WMI_CONTROL:
459 case ATH10K_HTC_SVC_ID_WMI_DATA_BE:
461 case ATH10K_HTC_SVC_ID_WMI_DATA_BK:
463 case ATH10K_HTC_SVC_ID_WMI_DATA_VI:
465 case ATH10K_HTC_SVC_ID_WMI_DATA_VO:
467 case ATH10K_HTC_SVC_ID_NMI_CONTROL:
468 return "NMI Control";
469 case ATH10K_HTC_SVC_ID_NMI_DATA:
471 case ATH10K_HTC_SVC_ID_HTT_DATA_MSG:
473 case ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS:
480 static void ath10k_htc_reset_endpoint_states(struct ath10k_htc *htc)
482 struct ath10k_htc_ep *ep;
485 for (i = ATH10K_HTC_EP_0; i < ATH10K_HTC_EP_COUNT; i++) {
486 ep = &htc->endpoint[i];
487 ep->service_id = ATH10K_HTC_SVC_ID_UNUSED;
488 ep->max_ep_message_len = 0;
489 ep->max_tx_queue_depth = 0;
492 ep->tx_credit_flow_enabled = true;
496 static void ath10k_htc_setup_target_buffer_assignments(struct ath10k_htc *htc)
498 struct ath10k_htc_svc_tx_credits *entry;
500 entry = &htc->service_tx_alloc[0];
503 * for PCIE allocate all credists/HTC buffers to WMI.
504 * no buffers are used/required for data. data always
508 entry->service_id = ATH10K_HTC_SVC_ID_WMI_CONTROL;
509 entry->credit_allocation = htc->total_transmit_credits;
512 static u8 ath10k_htc_get_credit_allocation(struct ath10k_htc *htc,
518 for (i = 0; i < ATH10K_HTC_EP_COUNT; i++) {
519 if (htc->service_tx_alloc[i].service_id == service_id)
521 htc->service_tx_alloc[i].credit_allocation;
527 int ath10k_htc_wait_target(struct ath10k_htc *htc)
530 struct ath10k_htc_svc_conn_req conn_req;
531 struct ath10k_htc_svc_conn_resp conn_resp;
532 struct ath10k_htc_msg *msg;
537 INIT_COMPLETION(htc->ctl_resp);
539 status = ath10k_hif_start(htc->ar);
541 ath10k_err("could not start HIF (%d)\n", status);
545 status = wait_for_completion_timeout(&htc->ctl_resp,
546 ATH10K_HTC_WAIT_TIMEOUT_HZ);
551 ath10k_err("ctl_resp never came in (%d)\n", status);
555 if (htc->control_resp_len < sizeof(msg->hdr) + sizeof(msg->ready)) {
556 ath10k_err("Invalid HTC ready msg len:%d\n",
557 htc->control_resp_len);
563 msg = (struct ath10k_htc_msg *)htc->control_resp_buffer;
564 message_id = __le16_to_cpu(msg->hdr.message_id);
565 credit_count = __le16_to_cpu(msg->ready.credit_count);
566 credit_size = __le16_to_cpu(msg->ready.credit_size);
568 if (message_id != ATH10K_HTC_MSG_READY_ID) {
569 ath10k_err("Invalid HTC ready msg: 0x%x\n", message_id);
574 htc->total_transmit_credits = credit_count;
575 htc->target_credit_size = credit_size;
577 ath10k_dbg(ATH10K_DBG_HTC,
578 "Target ready! transmit resources: %d size:%d\n",
579 htc->total_transmit_credits,
580 htc->target_credit_size);
582 if ((htc->total_transmit_credits == 0) ||
583 (htc->target_credit_size == 0)) {
585 ath10k_err("Invalid credit size received\n");
589 ath10k_htc_setup_target_buffer_assignments(htc);
591 /* setup our pseudo HTC control endpoint connection */
592 memset(&conn_req, 0, sizeof(conn_req));
593 memset(&conn_resp, 0, sizeof(conn_resp));
594 conn_req.ep_ops.ep_tx_complete = ath10k_htc_control_tx_complete;
595 conn_req.ep_ops.ep_rx_complete = ath10k_htc_control_rx_complete;
596 conn_req.max_send_queue_depth = ATH10K_NUM_CONTROL_TX_BUFFERS;
597 conn_req.service_id = ATH10K_HTC_SVC_ID_RSVD_CTRL;
599 /* connect fake service */
600 status = ath10k_htc_connect_service(htc, &conn_req, &conn_resp);
602 ath10k_err("could not connect to htc service (%d)\n", status);
608 ath10k_hif_stop(htc->ar);
613 int ath10k_htc_connect_service(struct ath10k_htc *htc,
614 struct ath10k_htc_svc_conn_req *conn_req,
615 struct ath10k_htc_svc_conn_resp *conn_resp)
617 struct ath10k_htc_msg *msg;
618 struct ath10k_htc_conn_svc *req_msg;
619 struct ath10k_htc_conn_svc_response resp_msg_dummy;
620 struct ath10k_htc_conn_svc_response *resp_msg = &resp_msg_dummy;
621 enum ath10k_htc_ep_id assigned_eid = ATH10K_HTC_EP_COUNT;
622 struct ath10k_htc_ep *ep;
624 unsigned int max_msg_size = 0;
626 bool disable_credit_flow_ctrl = false;
627 u16 message_id, service_id, flags = 0;
630 /* special case for HTC pseudo control service */
631 if (conn_req->service_id == ATH10K_HTC_SVC_ID_RSVD_CTRL) {
632 disable_credit_flow_ctrl = true;
633 assigned_eid = ATH10K_HTC_EP_0;
634 max_msg_size = ATH10K_HTC_MAX_CTRL_MSG_LEN;
635 memset(&resp_msg_dummy, 0, sizeof(resp_msg_dummy));
639 tx_alloc = ath10k_htc_get_credit_allocation(htc,
640 conn_req->service_id);
642 ath10k_dbg(ATH10K_DBG_BOOT,
643 "boot htc service %s does not allocate target credits\n",
644 htc_service_name(conn_req->service_id));
646 skb = ath10k_htc_build_tx_ctrl_skb(htc->ar);
648 ath10k_err("Failed to allocate HTC packet\n");
652 length = sizeof(msg->hdr) + sizeof(msg->connect_service);
653 skb_put(skb, length);
654 memset(skb->data, 0, length);
656 msg = (struct ath10k_htc_msg *)skb->data;
657 msg->hdr.message_id =
658 __cpu_to_le16(ATH10K_HTC_MSG_CONNECT_SERVICE_ID);
660 flags |= SM(tx_alloc, ATH10K_HTC_CONN_FLAGS_RECV_ALLOC);
662 /* Only enable credit flow control for WMI ctrl service */
663 if (conn_req->service_id != ATH10K_HTC_SVC_ID_WMI_CONTROL) {
664 flags |= ATH10K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
665 disable_credit_flow_ctrl = true;
668 req_msg = &msg->connect_service;
669 req_msg->flags = __cpu_to_le16(flags);
670 req_msg->service_id = __cpu_to_le16(conn_req->service_id);
672 INIT_COMPLETION(htc->ctl_resp);
674 status = ath10k_htc_send(htc, ATH10K_HTC_EP_0, skb);
680 /* wait for response */
681 status = wait_for_completion_timeout(&htc->ctl_resp,
682 ATH10K_HTC_CONN_SVC_TIMEOUT_HZ);
686 ath10k_err("Service connect timeout: %d\n", status);
690 /* we controlled the buffer creation, it's aligned */
691 msg = (struct ath10k_htc_msg *)htc->control_resp_buffer;
692 resp_msg = &msg->connect_service_response;
693 message_id = __le16_to_cpu(msg->hdr.message_id);
694 service_id = __le16_to_cpu(resp_msg->service_id);
696 if ((message_id != ATH10K_HTC_MSG_CONNECT_SERVICE_RESP_ID) ||
697 (htc->control_resp_len < sizeof(msg->hdr) +
698 sizeof(msg->connect_service_response))) {
699 ath10k_err("Invalid resp message ID 0x%x", message_id);
703 ath10k_dbg(ATH10K_DBG_HTC,
704 "HTC Service %s connect response: status: 0x%x, assigned ep: 0x%x\n",
705 htc_service_name(service_id),
706 resp_msg->status, resp_msg->eid);
708 conn_resp->connect_resp_code = resp_msg->status;
710 /* check response status */
711 if (resp_msg->status != ATH10K_HTC_CONN_SVC_STATUS_SUCCESS) {
712 ath10k_err("HTC Service %s connect request failed: 0x%x)\n",
713 htc_service_name(service_id),
718 assigned_eid = (enum ath10k_htc_ep_id)resp_msg->eid;
719 max_msg_size = __le16_to_cpu(resp_msg->max_msg_size);
723 if (assigned_eid >= ATH10K_HTC_EP_COUNT)
726 if (max_msg_size == 0)
729 ep = &htc->endpoint[assigned_eid];
730 ep->eid = assigned_eid;
732 if (ep->service_id != ATH10K_HTC_SVC_ID_UNUSED)
735 /* return assigned endpoint to caller */
736 conn_resp->eid = assigned_eid;
737 conn_resp->max_msg_len = __le16_to_cpu(resp_msg->max_msg_size);
739 /* setup the endpoint */
740 ep->service_id = conn_req->service_id;
741 ep->max_tx_queue_depth = conn_req->max_send_queue_depth;
742 ep->max_ep_message_len = __le16_to_cpu(resp_msg->max_msg_size);
743 ep->tx_credits = tx_alloc;
744 ep->tx_credit_size = htc->target_credit_size;
745 ep->tx_credits_per_max_message = ep->max_ep_message_len /
746 htc->target_credit_size;
748 if (ep->max_ep_message_len % htc->target_credit_size)
749 ep->tx_credits_per_max_message++;
751 /* copy all the callbacks */
752 ep->ep_ops = conn_req->ep_ops;
754 status = ath10k_hif_map_service_to_pipe(htc->ar,
763 ath10k_dbg(ATH10K_DBG_BOOT,
764 "boot htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",
765 htc_service_name(ep->service_id), ep->ul_pipe_id,
766 ep->dl_pipe_id, ep->eid);
768 ath10k_dbg(ATH10K_DBG_BOOT,
769 "boot htc ep %d ul polled %d dl polled %d\n",
770 ep->eid, ep->ul_is_polled, ep->dl_is_polled);
772 if (disable_credit_flow_ctrl && ep->tx_credit_flow_enabled) {
773 ep->tx_credit_flow_enabled = false;
774 ath10k_dbg(ATH10K_DBG_BOOT,
775 "boot htc service '%s' eid %d TX flow control disabled\n",
776 htc_service_name(ep->service_id), assigned_eid);
782 struct sk_buff *ath10k_htc_alloc_skb(int size)
786 skb = dev_alloc_skb(size + sizeof(struct ath10k_htc_hdr));
788 ath10k_warn("could not allocate HTC tx skb\n");
792 skb_reserve(skb, sizeof(struct ath10k_htc_hdr));
794 /* FW/HTC requires 4-byte aligned streams */
795 if (!IS_ALIGNED((unsigned long)skb->data, 4))
796 ath10k_warn("Unaligned HTC tx skb\n");
801 int ath10k_htc_start(struct ath10k_htc *htc)
805 struct ath10k_htc_msg *msg;
807 skb = ath10k_htc_build_tx_ctrl_skb(htc->ar);
811 skb_put(skb, sizeof(msg->hdr) + sizeof(msg->setup_complete_ext));
812 memset(skb->data, 0, skb->len);
814 msg = (struct ath10k_htc_msg *)skb->data;
815 msg->hdr.message_id =
816 __cpu_to_le16(ATH10K_HTC_MSG_SETUP_COMPLETE_EX_ID);
818 ath10k_dbg(ATH10K_DBG_HTC, "HTC is using TX credit flow control\n");
820 status = ath10k_htc_send(htc, ATH10K_HTC_EP_0, skb);
830 * stop HTC communications, i.e. stop interrupt reception, and flush all
833 void ath10k_htc_stop(struct ath10k_htc *htc)
835 spin_lock_bh(&htc->tx_lock);
837 spin_unlock_bh(&htc->tx_lock);
839 ath10k_hif_stop(htc->ar);
842 /* registered target arrival callback from the HIF layer */
843 int ath10k_htc_init(struct ath10k *ar)
845 struct ath10k_hif_cb htc_callbacks;
846 struct ath10k_htc_ep *ep = NULL;
847 struct ath10k_htc *htc = &ar->htc;
849 spin_lock_init(&htc->tx_lock);
851 htc->stopped = false;
852 ath10k_htc_reset_endpoint_states(htc);
854 /* setup HIF layer callbacks */
855 htc_callbacks.rx_completion = ath10k_htc_rx_completion_handler;
856 htc_callbacks.tx_completion = ath10k_htc_tx_completion_handler;
859 /* Get HIF default pipe for HTC message exchange */
860 ep = &htc->endpoint[ATH10K_HTC_EP_0];
862 ath10k_hif_set_callbacks(ar, &htc_callbacks);
863 ath10k_hif_get_default_pipe(ar, &ep->ul_pipe_id, &ep->dl_pipe_id);
865 init_completion(&htc->ctl_resp);