21 	/* FW/HTC requires 4-byte aligned streams */  in ath11k_htc_alloc_skb()
23 		ath11k_warn(ab, "Unaligned HTC tx skb\n");  in ath11k_htc_alloc_skb()
68 	spin_lock_bh(&ep->htc->tx_lock);  in ath11k_htc_prepare_tx_skb()
70 	spin_unlock_bh(&ep->htc->tx_lock);  in ath11k_htc_prepare_tx_skb()
73 int ath11k_htc_send(struct ath11k_htc *htc,  in ath11k_htc_send()  argument
77 	struct ath11k_htc_ep *ep = &htc->endpoint[eid];  in ath11k_htc_send()
79 	struct device *dev = htc->ab->dev;  in ath11k_htc_send()
80 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_send()
94 		credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);  in ath11k_htc_send()
95 		spin_lock_bh(&htc->tx_lock);  in ath11k_htc_send()
100 			spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
108 		spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
124 	ret = ath11k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid);  in ath11k_htc_send()
134 		spin_lock_bh(&htc->tx_lock);  in ath11k_htc_send()
139 		spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
142 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath11k_htc_send()
150 ath11k_htc_process_credit_report(struct ath11k_htc *htc,  in ath11k_htc_process_credit_report()  argument
155 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_process_credit_report()
164 	spin_lock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
169 		ep = &htc->endpoint[report->eid];  in ath11k_htc_process_credit_report()
176 			spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
177 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath11k_htc_process_credit_report()
178 			spin_lock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
181 	spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
184 static int ath11k_htc_process_trailer(struct ath11k_htc *htc,  in ath11k_htc_process_trailer()  argument
189 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_process_trailer()
219 				ath11k_htc_process_credit_report(htc,  in ath11k_htc_process_trailer()
257 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_tx_completion_handler()  local
268 	ep = &htc->endpoint[eid];  in ath11k_htc_tx_completion_handler()
269 	spin_lock_bh(&htc->tx_lock);  in ath11k_htc_tx_completion_handler()
271 	spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_tx_completion_handler()
276 	ep_tx_complete(htc->ab, skb);  in ath11k_htc_tx_completion_handler()
288 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_rx_completion_handler()  local
303 		ath11k_warn(ab, "HTC Rx: invalid eid %d\n", eid);  in ath11k_htc_rx_completion_handler()
307 	ep = &htc->endpoint[eid];  in ath11k_htc_rx_completion_handler()
312 		ath11k_warn(ab, "HTC rx frame too long, len: %zu\n",  in ath11k_htc_rx_completion_handler()
318 		ath11k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n",  in ath11k_htc_rx_completion_handler()
347 		status = ath11k_htc_process_trailer(htc, trailer,  in ath11k_htc_rx_completion_handler()
370 			/* handle HTC control message */  in ath11k_htc_rx_completion_handler()
371 			if (completion_done(&htc->ctl_resp)) {  in ath11k_htc_rx_completion_handler()
375 				ath11k_warn(ab, "HTC rx ctrl still processing\n");  in ath11k_htc_rx_completion_handler()
376 				complete(&htc->ctl_resp);  in ath11k_htc_rx_completion_handler()
380 			htc->control_resp_len =  in ath11k_htc_rx_completion_handler()
384 			memcpy(htc->control_resp_buffer, skb->data,  in ath11k_htc_rx_completion_handler()
385 			       htc->control_resp_len);  in ath11k_htc_rx_completion_handler()
387 			complete(&htc->ctl_resp);  in ath11k_htc_rx_completion_handler()
399 			ath11k_warn(ab, "ignoring unsolicited htc ep0 event %ld\n",  in ath11k_htc_rx_completion_handler()
423 	ath11k_warn(ab, "unexpected htc rx\n");  in ath11k_htc_control_rx_complete()
465 static void ath11k_htc_reset_endpoint_states(struct ath11k_htc *htc)  in ath11k_htc_reset_endpoint_states()  argument
471 		ep = &htc->endpoint[i];  in ath11k_htc_reset_endpoint_states()
476 		ep->htc = htc;  in ath11k_htc_reset_endpoint_states()
481 static u8 ath11k_htc_get_credit_allocation(struct ath11k_htc *htc,  in ath11k_htc_get_credit_allocation()  argument
487 		if (htc->service_alloc_table[i].service_id == service_id) {  in ath11k_htc_get_credit_allocation()
489 				htc->service_alloc_table[i].credit_allocation;  in ath11k_htc_get_credit_allocation()
496 static int ath11k_htc_setup_target_buffer_assignments(struct ath11k_htc *htc)  in ath11k_htc_setup_target_buffer_assignments()  argument
506 	credits =  htc->total_transmit_credits;  in ath11k_htc_setup_target_buffer_assignments()
507 	serv_entry = htc->service_alloc_table;  in ath11k_htc_setup_target_buffer_assignments()
509 	if ((htc->wmi_ep_count == 0) ||  in ath11k_htc_setup_target_buffer_assignments()
510 	    (htc->wmi_ep_count > ARRAY_SIZE(svc_id)))  in ath11k_htc_setup_target_buffer_assignments()
514 	credits = credits / htc->wmi_ep_count;  in ath11k_htc_setup_target_buffer_assignments()
515 	for (i = 0; i < htc->wmi_ep_count; i++) {  in ath11k_htc_setup_target_buffer_assignments()
523 int ath11k_htc_wait_target(struct ath11k_htc *htc)  in ath11k_htc_wait_target()  argument
526 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_wait_target()
533 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_wait_target()
539 			ath11k_ce_per_engine_service(htc->ab, i);  in ath11k_htc_wait_target()
542 			wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_wait_target()
554 	if (htc->control_resp_len < sizeof(*ready)) {  in ath11k_htc_wait_target()
555 		ath11k_warn(ab, "Invalid HTC ready msg len:%d\n",  in ath11k_htc_wait_target()
556 			    htc->control_resp_len);  in ath11k_htc_wait_target()
560 	ready = (struct ath11k_htc_ready *)htc->control_resp_buffer;  in ath11k_htc_wait_target()
567 		ath11k_warn(ab, "Invalid HTC ready msg: 0x%x\n", message_id);  in ath11k_htc_wait_target()
571 	htc->total_transmit_credits = credit_count;  in ath11k_htc_wait_target()
572 	htc->target_credit_size = credit_size;  in ath11k_htc_wait_target()
576 		   htc->total_transmit_credits, htc->target_credit_size);  in ath11k_htc_wait_target()
578 	if ((htc->total_transmit_credits == 0) ||  in ath11k_htc_wait_target()
579 	    (htc->target_credit_size == 0)) {  in ath11k_htc_wait_target()
588 		htc->total_transmit_credits = 1;  in ath11k_htc_wait_target()
590 	ath11k_htc_setup_target_buffer_assignments(htc);  in ath11k_htc_wait_target()
595 int ath11k_htc_connect_service(struct ath11k_htc *htc,  in ath11k_htc_connect_service()  argument
599 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_connect_service()
613 	/* special case for HTC pseudo control service */  in ath11k_htc_connect_service()
622 	tx_alloc = ath11k_htc_get_credit_allocation(htc,  in ath11k_htc_connect_service()
626 			   "htc service %s does not allocate target credits\n",  in ath11k_htc_connect_service()
629 	skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);  in ath11k_htc_connect_service()
631 		ath11k_warn(ab, "Failed to allocate HTC packet\n");  in ath11k_htc_connect_service()
662 	reinit_completion(&htc->ctl_resp);  in ath11k_htc_connect_service()
664 	status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);  in ath11k_htc_connect_service()
671 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_connect_service()
679 	resp_msg = (struct ath11k_htc_conn_svc_resp *)htc->control_resp_buffer;  in ath11k_htc_connect_service()
685 	    (htc->control_resp_len < sizeof(*resp_msg))) {  in ath11k_htc_connect_service()
701 		ath11k_err(ab, "HTC Service %s connect request failed: 0x%x)\n",  in ath11k_htc_connect_service()
722 	ep = &htc->endpoint[assigned_eid];  in ath11k_htc_connect_service()
743 	status = ath11k_hif_map_service_to_pipe(htc->ab,  in ath11k_htc_connect_service()
751 		   "htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",  in ath11k_htc_connect_service()
758 			   "htc service '%s' eid %d tx flow control disabled\n",  in ath11k_htc_connect_service()
765 int ath11k_htc_start(struct ath11k_htc *htc)  in ath11k_htc_start()  argument
769 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_start()
772 	skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);  in ath11k_htc_start()
788 	status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);  in ath11k_htc_start()
799 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_init()  local
804 	spin_lock_init(&htc->tx_lock);  in ath11k_htc_init()
806 	ath11k_htc_reset_endpoint_states(htc);  in ath11k_htc_init()
808 	htc->ab = ab;  in ath11k_htc_init()
812 		htc->wmi_ep_count = 1;  in ath11k_htc_init()
816 		htc->wmi_ep_count = 2;  in ath11k_htc_init()
819 		htc->wmi_ep_count = 3;  in ath11k_htc_init()
822 		htc->wmi_ep_count = ab->hw_params.max_radios;  in ath11k_htc_init()
826 	/* setup our pseudo HTC control endpoint connection */  in ath11k_htc_init()
835 	ret = ath11k_htc_connect_service(htc, &conn_req, &conn_resp);  in ath11k_htc_init()
837 		ath11k_err(ab, "could not connect to htc service (%d)\n", ret);  in ath11k_htc_init()
841 	init_completion(&htc->ctl_resp);  in ath11k_htc_init()