22 	/* FW/HTC requires 4-byte aligned streams */  in ath12k_htc_alloc_skb()
24 		ath12k_warn(ab, "Unaligned HTC tx skb\n");  in ath12k_htc_alloc_skb()
69 	spin_lock_bh(&ep->htc->tx_lock);  in ath12k_htc_prepare_tx_skb()
71 	spin_unlock_bh(&ep->htc->tx_lock);  in ath12k_htc_prepare_tx_skb()
74 int ath12k_htc_send(struct ath12k_htc *htc,  in ath12k_htc_send()  argument
78 	struct ath12k_htc_ep *ep = &htc->endpoint[eid];  in ath12k_htc_send()
80 	struct device *dev = htc->ab->dev;  in ath12k_htc_send()
81 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_send()
93 		credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);  in ath12k_htc_send()
94 		spin_lock_bh(&htc->tx_lock);  in ath12k_htc_send()
97 				   "htc insufficient credits ep %d required %d available %d\n",  in ath12k_htc_send()
99 			spin_unlock_bh(&htc->tx_lock);  in ath12k_htc_send()
105 			   "htc ep %d consumed %d credits (total %d)\n",  in ath12k_htc_send()
107 		spin_unlock_bh(&htc->tx_lock);  in ath12k_htc_send()
119 	ret = ath12k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid);  in ath12k_htc_send()
129 		spin_lock_bh(&htc->tx_lock);  in ath12k_htc_send()
132 			   "htc ep %d reverted %d credits back (total %d)\n",  in ath12k_htc_send()
134 		spin_unlock_bh(&htc->tx_lock);  in ath12k_htc_send()
137 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath12k_htc_send()
145 ath12k_htc_process_credit_report(struct ath12k_htc *htc,  in ath12k_htc_process_credit_report()  argument
150 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_process_credit_report()
159 	spin_lock_bh(&htc->tx_lock);  in ath12k_htc_process_credit_report()
164 		ep = &htc->endpoint[report->eid];  in ath12k_htc_process_credit_report()
167 		ath12k_dbg(ab, ATH12K_DBG_HTC, "htc ep %d got %d credits (total %d)\n",  in ath12k_htc_process_credit_report()
171 			spin_unlock_bh(&htc->tx_lock);  in ath12k_htc_process_credit_report()
172 			ep->ep_ops.ep_tx_credits(htc->ab);  in ath12k_htc_process_credit_report()
173 			spin_lock_bh(&htc->tx_lock);  in ath12k_htc_process_credit_report()
176 	spin_unlock_bh(&htc->tx_lock);  in ath12k_htc_process_credit_report()
179 static int ath12k_htc_process_trailer(struct ath12k_htc *htc,  in ath12k_htc_process_trailer()  argument
184 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_process_trailer()
213 			ath12k_htc_process_credit_report(htc,  in ath12k_htc_process_trailer()
251 	struct ath12k_htc *htc = &ab->htc;  in ath12k_htc_rx_completion_handler()  local
266 		ath12k_warn(ab, "HTC Rx: invalid eid %d\n", eid);  in ath12k_htc_rx_completion_handler()
270 	ep = &htc->endpoint[eid];  in ath12k_htc_rx_completion_handler()
275 		ath12k_warn(ab, "HTC rx frame too long, len: %zu\n",  in ath12k_htc_rx_completion_handler()
281 		ath12k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n",  in ath12k_htc_rx_completion_handler()
308 		status = ath12k_htc_process_trailer(htc, trailer,  in ath12k_htc_rx_completion_handler()
326 			/* handle HTC control message */  in ath12k_htc_rx_completion_handler()
327 			if (completion_done(&htc->ctl_resp)) {  in ath12k_htc_rx_completion_handler()
331 				ath12k_warn(ab, "HTC rx ctrl still processing\n");  in ath12k_htc_rx_completion_handler()
332 				complete(&htc->ctl_resp);  in ath12k_htc_rx_completion_handler()
336 			htc->control_resp_len =  in ath12k_htc_rx_completion_handler()
340 			memcpy(htc->control_resp_buffer, skb->data,  in ath12k_htc_rx_completion_handler()
341 			       htc->control_resp_len);  in ath12k_htc_rx_completion_handler()
343 			complete(&htc->ctl_resp);  in ath12k_htc_rx_completion_handler()
354 			ath12k_warn(ab, "ignoring unsolicited htc ep0 event %u\n",  in ath12k_htc_rx_completion_handler()
361 	ath12k_dbg(ab, ATH12K_DBG_HTC, "htc rx completion ep %d skb %pK\n",  in ath12k_htc_rx_completion_handler()
380 	ath12k_warn(ab, "unexpected htc rx\n");  in ath12k_htc_control_rx_complete()
424 static void ath12k_htc_reset_endpoint_states(struct ath12k_htc *htc)  in ath12k_htc_reset_endpoint_states()  argument
430 		ep = &htc->endpoint[i];  in ath12k_htc_reset_endpoint_states()
435 		ep->htc = htc;  in ath12k_htc_reset_endpoint_states()
440 static u8 ath12k_htc_get_credit_allocation(struct ath12k_htc *htc,  in ath12k_htc_get_credit_allocation()  argument
446 	serv_entry = htc->service_alloc_table;  in ath12k_htc_get_credit_allocation()
458 static int ath12k_htc_setup_target_buffer_assignments(struct ath12k_htc *htc)  in ath12k_htc_setup_target_buffer_assignments()  argument
468 	credits = htc->total_transmit_credits;  in ath12k_htc_setup_target_buffer_assignments()
469 	serv_entry = htc->service_alloc_table;  in ath12k_htc_setup_target_buffer_assignments()
471 	if ((htc->wmi_ep_count == 0) ||  in ath12k_htc_setup_target_buffer_assignments()
472 	    (htc->wmi_ep_count > ARRAY_SIZE(svc_id)))  in ath12k_htc_setup_target_buffer_assignments()
476 	credits = credits / htc->wmi_ep_count;  in ath12k_htc_setup_target_buffer_assignments()
477 	for (i = 0; i < htc->wmi_ep_count; i++) {  in ath12k_htc_setup_target_buffer_assignments()
485 int ath12k_htc_wait_target(struct ath12k_htc *htc)  in ath12k_htc_wait_target()  argument
488 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_wait_target()
495 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath12k_htc_wait_target()
501 			ath12k_ce_per_engine_service(htc->ab, i);  in ath12k_htc_wait_target()
504 			wait_for_completion_timeout(&htc->ctl_resp,  in ath12k_htc_wait_target()
516 	if (htc->control_resp_len < sizeof(*ready)) {  in ath12k_htc_wait_target()
517 		ath12k_warn(ab, "Invalid HTC ready msg len:%d\n",  in ath12k_htc_wait_target()
518 			    htc->control_resp_len);  in ath12k_htc_wait_target()
522 	ready = (struct ath12k_htc_ready *)htc->control_resp_buffer;  in ath12k_htc_wait_target()
529 		ath12k_warn(ab, "Invalid HTC ready msg: 0x%x\n", message_id);  in ath12k_htc_wait_target()
533 	htc->total_transmit_credits = credit_count;  in ath12k_htc_wait_target()
534 	htc->target_credit_size = credit_size;  in ath12k_htc_wait_target()
538 		   htc->total_transmit_credits, htc->target_credit_size);  in ath12k_htc_wait_target()
540 	if ((htc->total_transmit_credits == 0) ||  in ath12k_htc_wait_target()
541 	    (htc->target_credit_size == 0)) {  in ath12k_htc_wait_target()
546 	ath12k_htc_setup_target_buffer_assignments(htc);  in ath12k_htc_wait_target()
551 int ath12k_htc_connect_service(struct ath12k_htc *htc,  in ath12k_htc_connect_service()  argument
555 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_connect_service()
569 	/* special case for HTC pseudo control service */  in ath12k_htc_connect_service()
578 	tx_alloc = ath12k_htc_get_credit_allocation(htc,  in ath12k_htc_connect_service()
582 			   "boot htc service %s does not allocate target credits\n",  in ath12k_htc_connect_service()
587 		ath12k_warn(ab, "Failed to allocate HTC packet\n");  in ath12k_htc_connect_service()
613 	reinit_completion(&htc->ctl_resp);  in ath12k_htc_connect_service()
615 	status = ath12k_htc_send(htc, ATH12K_HTC_EP_0, skb);  in ath12k_htc_connect_service()
622 	time_left = wait_for_completion_timeout(&htc->ctl_resp,  in ath12k_htc_connect_service()
630 	resp_msg = (struct ath12k_htc_conn_svc_resp *)htc->control_resp_buffer;  in ath12k_htc_connect_service()
636 	    (htc->control_resp_len < sizeof(*resp_msg))) {  in ath12k_htc_connect_service()
642 		   "HTC Service %s connect response: status: %u, assigned ep: %u\n",  in ath12k_htc_connect_service()
652 		ath12k_err(ab, "HTC Service %s connect request failed: 0x%x)\n",  in ath12k_htc_connect_service()
672 	ep = &htc->endpoint[assigned_eid];  in ath12k_htc_connect_service()
693 	status = ath12k_hif_map_service_to_pipe(htc->ab,  in ath12k_htc_connect_service()
701 		   "boot htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",  in ath12k_htc_connect_service()
708 			   "boot htc service '%s' eid %d TX flow control disabled\n",  in ath12k_htc_connect_service()
715 int ath12k_htc_start(struct ath12k_htc *htc)  in ath12k_htc_start()  argument
719 	struct ath12k_base *ab = htc->ab;  in ath12k_htc_start()
733 	ath12k_dbg(ab, ATH12K_DBG_HTC, "HTC is using TX credit flow control\n");  in ath12k_htc_start()
735 	status = ath12k_htc_send(htc, ATH12K_HTC_EP_0, skb);  in ath12k_htc_start()
746 	struct ath12k_htc *htc = &ab->htc;  in ath12k_htc_init()  local
751 	spin_lock_init(&htc->tx_lock);  in ath12k_htc_init()
753 	ath12k_htc_reset_endpoint_states(htc);  in ath12k_htc_init()
755 	htc->ab = ab;  in ath12k_htc_init()
759 		htc->wmi_ep_count = 1;  in ath12k_htc_init()
763 		htc->wmi_ep_count = 2;  in ath12k_htc_init()
766 		htc->wmi_ep_count = 3;  in ath12k_htc_init()
769 		htc->wmi_ep_count = ab->hw_params->max_radios;  in ath12k_htc_init()
773 	/* setup our pseudo HTC control endpoint connection */  in ath12k_htc_init()
780 	ret = ath12k_htc_connect_service(htc, &conn_req, &conn_resp);  in ath12k_htc_init()
782 		ath12k_err(ab, "could not connect to htc service (%d)\n", ret);  in ath12k_htc_init()
786 	init_completion(&htc->ctl_resp);  in ath12k_htc_init()