22 	/* FW/HTC requires 4-byte aligned streams */  in ath11k_htc_alloc_skb()
24 		ath11k_warn(ab, "Unaligned HTC tx skb\n");  in ath11k_htc_alloc_skb()
69 	spin_lock_bh(&ep->htc->tx_lock);  in ath11k_htc_prepare_tx_skb()
71 	spin_unlock_bh(&ep->htc->tx_lock);  in ath11k_htc_prepare_tx_skb()
74 int ath11k_htc_send(struct ath11k_htc *htc,  in ath11k_htc_send()  argument
78 	struct ath11k_htc_ep *ep = &htc->endpoint[eid];  in ath11k_htc_send()
80 	struct device *dev = htc->ab->dev;  in ath11k_htc_send()
81 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_send()
95 		credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);  in ath11k_htc_send()
96 		spin_lock_bh(&htc->tx_lock);  in ath11k_htc_send()
101 			spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
109 		spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
125 	ret = ath11k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid);  in ath11k_htc_send()
135 		spin_lock_bh(&htc->tx_lock);  in ath11k_htc_send()
140 		spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_send()
143 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath11k_htc_send()
151 ath11k_htc_process_credit_report(struct ath11k_htc *htc,  in ath11k_htc_process_credit_report()  argument
156 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_process_credit_report()
165 	spin_lock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
170 		ep = &htc->endpoint[report->eid];  in ath11k_htc_process_credit_report()
177 			spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
178 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath11k_htc_process_credit_report()
179 			spin_lock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
182 	spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_process_credit_report()
185 static int ath11k_htc_process_trailer(struct ath11k_htc *htc,  in ath11k_htc_process_trailer()  argument
190 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_process_trailer()
220 				ath11k_htc_process_credit_report(htc,  in ath11k_htc_process_trailer()
258 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_tx_completion_handler()  local
269 	ep = &htc->endpoint[eid];  in ath11k_htc_tx_completion_handler()
270 	spin_lock_bh(&htc->tx_lock);  in ath11k_htc_tx_completion_handler()
272 	spin_unlock_bh(&htc->tx_lock);  in ath11k_htc_tx_completion_handler()
277 	ep_tx_complete(htc->ab, skb);  in ath11k_htc_tx_completion_handler()
289 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_rx_completion_handler()  local
304 		ath11k_warn(ab, "HTC Rx: invalid eid %d\n", eid);  in ath11k_htc_rx_completion_handler()
308 	ep = &htc->endpoint[eid];  in ath11k_htc_rx_completion_handler()
313 		ath11k_warn(ab, "HTC rx frame too long, len: %zu\n",  in ath11k_htc_rx_completion_handler()
319 		ath11k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n",  in ath11k_htc_rx_completion_handler()
348 		status = ath11k_htc_process_trailer(htc, trailer,  in ath11k_htc_rx_completion_handler()
371 			/* handle HTC control message */  in ath11k_htc_rx_completion_handler()
372 			if (completion_done(&htc->ctl_resp)) {  in ath11k_htc_rx_completion_handler()
376 				ath11k_warn(ab, "HTC rx ctrl still processing\n");  in ath11k_htc_rx_completion_handler()
377 				complete(&htc->ctl_resp);  in ath11k_htc_rx_completion_handler()
381 			htc->control_resp_len =  in ath11k_htc_rx_completion_handler()
385 			memcpy(htc->control_resp_buffer, skb->data,  in ath11k_htc_rx_completion_handler()
386 			       htc->control_resp_len);  in ath11k_htc_rx_completion_handler()
388 			complete(&htc->ctl_resp);  in ath11k_htc_rx_completion_handler()
400 			ath11k_warn(ab, "ignoring unsolicited htc ep0 event %ld\n",  in ath11k_htc_rx_completion_handler()
424 	ath11k_warn(ab, "unexpected htc rx\n");  in ath11k_htc_control_rx_complete()
466 static void ath11k_htc_reset_endpoint_states(struct ath11k_htc *htc)  in ath11k_htc_reset_endpoint_states()  argument
472 		ep = &htc->endpoint[i];  in ath11k_htc_reset_endpoint_states()
477 		ep->htc = htc;  in ath11k_htc_reset_endpoint_states()
482 static u8 ath11k_htc_get_credit_allocation(struct ath11k_htc *htc,  in ath11k_htc_get_credit_allocation()  argument
488 		if (htc->service_alloc_table[i].service_id == service_id) {  in ath11k_htc_get_credit_allocation()
490 				htc->service_alloc_table[i].credit_allocation;  in ath11k_htc_get_credit_allocation()
497 static int ath11k_htc_setup_target_buffer_assignments(struct ath11k_htc *htc)  in ath11k_htc_setup_target_buffer_assignments()  argument
507 	credits =  htc->total_transmit_credits;  in ath11k_htc_setup_target_buffer_assignments()
508 	serv_entry = htc->service_alloc_table;  in ath11k_htc_setup_target_buffer_assignments()
510 	if ((htc->wmi_ep_count == 0) ||  in ath11k_htc_setup_target_buffer_assignments()
511 	    (htc->wmi_ep_count > ARRAY_SIZE(svc_id)))  in ath11k_htc_setup_target_buffer_assignments()
515 	credits = credits / htc->wmi_ep_count;  in ath11k_htc_setup_target_buffer_assignments()
516 	for (i = 0; i < htc->wmi_ep_count; i++) {  in ath11k_htc_setup_target_buffer_assignments()
524 int ath11k_htc_wait_target(struct ath11k_htc *htc)  in ath11k_htc_wait_target()  argument
527 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_wait_target()
534 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_wait_target()
540 			ath11k_ce_per_engine_service(htc->ab, i);  in ath11k_htc_wait_target()
543 			wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_wait_target()
555 	if (htc->control_resp_len < sizeof(*ready)) {  in ath11k_htc_wait_target()
556 		ath11k_warn(ab, "Invalid HTC ready msg len:%d\n",  in ath11k_htc_wait_target()
557 			    htc->control_resp_len);  in ath11k_htc_wait_target()
561 	ready = (struct ath11k_htc_ready *)htc->control_resp_buffer;  in ath11k_htc_wait_target()
568 		ath11k_warn(ab, "Invalid HTC ready msg: 0x%x\n", message_id);  in ath11k_htc_wait_target()
572 	htc->total_transmit_credits = credit_count;  in ath11k_htc_wait_target()
573 	htc->target_credit_size = credit_size;  in ath11k_htc_wait_target()
577 		   htc->total_transmit_credits, htc->target_credit_size);  in ath11k_htc_wait_target()
579 	if ((htc->total_transmit_credits == 0) ||  in ath11k_htc_wait_target()
580 	    (htc->target_credit_size == 0)) {  in ath11k_htc_wait_target()
589 		htc->total_transmit_credits = 1;  in ath11k_htc_wait_target()
591 	ath11k_htc_setup_target_buffer_assignments(htc);  in ath11k_htc_wait_target()
596 int ath11k_htc_connect_service(struct ath11k_htc *htc,  in ath11k_htc_connect_service()  argument
600 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_connect_service()
614 	/* special case for HTC pseudo control service */  in ath11k_htc_connect_service()
623 	tx_alloc = ath11k_htc_get_credit_allocation(htc,  in ath11k_htc_connect_service()
627 			   "htc service %s does not allocate target credits\n",  in ath11k_htc_connect_service()
630 	skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);  in ath11k_htc_connect_service()
632 		ath11k_warn(ab, "Failed to allocate HTC packet\n");  in ath11k_htc_connect_service()
663 	reinit_completion(&htc->ctl_resp);  in ath11k_htc_connect_service()
665 	status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);  in ath11k_htc_connect_service()
672 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath11k_htc_connect_service()
680 	resp_msg = (struct ath11k_htc_conn_svc_resp *)htc->control_resp_buffer;  in ath11k_htc_connect_service()
686 	    (htc->control_resp_len < sizeof(*resp_msg))) {  in ath11k_htc_connect_service()
702 		ath11k_err(ab, "HTC Service %s connect request failed: 0x%x)\n",  in ath11k_htc_connect_service()
723 	ep = &htc->endpoint[assigned_eid];  in ath11k_htc_connect_service()
744 	status = ath11k_hif_map_service_to_pipe(htc->ab,  in ath11k_htc_connect_service()
752 		   "htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",  in ath11k_htc_connect_service()
759 			   "htc service '%s' eid %d tx flow control disabled\n",  in ath11k_htc_connect_service()
766 int ath11k_htc_start(struct ath11k_htc *htc)  in ath11k_htc_start()  argument
770 	struct ath11k_base *ab = htc->ab;  in ath11k_htc_start()
773 	skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);  in ath11k_htc_start()
789 	status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);  in ath11k_htc_start()
800 	struct ath11k_htc *htc = &ab->htc;  in ath11k_htc_init()  local
805 	spin_lock_init(&htc->tx_lock);  in ath11k_htc_init()
807 	ath11k_htc_reset_endpoint_states(htc);  in ath11k_htc_init()
809 	htc->ab = ab;  in ath11k_htc_init()
813 		htc->wmi_ep_count = 1;  in ath11k_htc_init()
817 		htc->wmi_ep_count = 2;  in ath11k_htc_init()
820 		htc->wmi_ep_count = 3;  in ath11k_htc_init()
823 		htc->wmi_ep_count = ab->hw_params.max_radios;  in ath11k_htc_init()
827 	/* setup our pseudo HTC control endpoint connection */  in ath11k_htc_init()
836 	ret = ath11k_htc_connect_service(htc, &conn_req, &conn_resp);  in ath11k_htc_init()
838 		ath11k_err(ab, "could not connect to htc service (%d)\n", ret);  in ath11k_htc_init()
842 	init_completion(&htc->ctl_resp);  in ath11k_htc_init()