17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
53304303fSsl  * Common Development and Distribution License (the "License").
63304303fSsl  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
223fbbb872Ssl  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
237c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate  */
257c478bd9Sstevel@tonic-gate 
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*
287c478bd9Sstevel@tonic-gate  * EHCI Host Controller Driver (EHCI)
297c478bd9Sstevel@tonic-gate  *
307c478bd9Sstevel@tonic-gate  * The EHCI driver is a software driver which interfaces to the Universal
317c478bd9Sstevel@tonic-gate  * Serial Bus layer (USBA) and the Host Controller (HC). The interface to
327c478bd9Sstevel@tonic-gate  * the Host Controller is defined by the EHCI Host Controller Interface.
337c478bd9Sstevel@tonic-gate  *
347c478bd9Sstevel@tonic-gate  * This module contains the EHCI driver interrupt code, which handles all
357c478bd9Sstevel@tonic-gate  * Checking of status of USB transfers, error recovery and callbacks.
367c478bd9Sstevel@tonic-gate  */
377c478bd9Sstevel@tonic-gate 
387c478bd9Sstevel@tonic-gate #include <sys/usb/hcd/ehci/ehcid.h>
397c478bd9Sstevel@tonic-gate #include <sys/usb/hcd/ehci/ehci_xfer.h>
407c478bd9Sstevel@tonic-gate #include <sys/usb/hcd/ehci/ehci_util.h>
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate /*
437c478bd9Sstevel@tonic-gate  * EHCI Interrupt Handling functions.
447c478bd9Sstevel@tonic-gate  */
457c478bd9Sstevel@tonic-gate void		ehci_handle_ue(ehci_state_t		*ehcip);
467c478bd9Sstevel@tonic-gate void		ehci_handle_frame_list_rollover(
477c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip);
487c478bd9Sstevel@tonic-gate void		ehci_handle_endpoint_reclaimation(
497c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip);
507c478bd9Sstevel@tonic-gate void		ehci_traverse_active_qtd_list(
517c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip);
527c478bd9Sstevel@tonic-gate static ehci_qtd_t *ehci_create_done_qtd_list(
537c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip);
547c478bd9Sstevel@tonic-gate static usb_cr_t ehci_parse_error(
557c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
567c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd);
577c478bd9Sstevel@tonic-gate usb_cr_t	ehci_check_for_error(
587c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
597c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
607c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
617c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
627c478bd9Sstevel@tonic-gate 				uint_t			ctrl);
637c478bd9Sstevel@tonic-gate static usb_cr_t	ehci_check_for_short_xfer(
647c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
657c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
667c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
677c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd);
687c478bd9Sstevel@tonic-gate void		ehci_handle_error(
697c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
707c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
717c478bd9Sstevel@tonic-gate 				usb_cr_t		error);
727c478bd9Sstevel@tonic-gate static void	ehci_cleanup_data_underrun(
737c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
747c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
757c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd);
767c478bd9Sstevel@tonic-gate static void	ehci_handle_normal_qtd(
777c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
787c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
797c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw);
807c478bd9Sstevel@tonic-gate void		ehci_handle_ctrl_qtd(
817c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
827c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
837c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
847c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
857c478bd9Sstevel@tonic-gate 				void			*);
867c478bd9Sstevel@tonic-gate void		ehci_handle_bulk_qtd(
877c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
887c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
897c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
907c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
917c478bd9Sstevel@tonic-gate 				void			*);
927c478bd9Sstevel@tonic-gate void		ehci_handle_intr_qtd(
937c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
947c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
957c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
967c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
977c478bd9Sstevel@tonic-gate 				void			*);
987c478bd9Sstevel@tonic-gate static void	ehci_handle_one_xfer_completion(
997c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
1007c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw);
1017c478bd9Sstevel@tonic-gate static void	ehci_sendup_qtd_message(
1027c478bd9Sstevel@tonic-gate 				ehci_state_t		*ehcip,
1037c478bd9Sstevel@tonic-gate 				ehci_pipe_private_t	*pp,
1047c478bd9Sstevel@tonic-gate 				ehci_trans_wrapper_t	*tw,
1057c478bd9Sstevel@tonic-gate 				ehci_qtd_t		*qtd,
1067c478bd9Sstevel@tonic-gate 				usb_cr_t		error);
1077c478bd9Sstevel@tonic-gate 
1087c478bd9Sstevel@tonic-gate 
1097c478bd9Sstevel@tonic-gate /*
1107c478bd9Sstevel@tonic-gate  * Interrupt Handling functions
1117c478bd9Sstevel@tonic-gate  */
1127c478bd9Sstevel@tonic-gate 
1137c478bd9Sstevel@tonic-gate /*
1147c478bd9Sstevel@tonic-gate  * ehci_handle_ue:
1157c478bd9Sstevel@tonic-gate  *
1167c478bd9Sstevel@tonic-gate  * Handling of Unrecoverable Error interrupt (UE).
1177c478bd9Sstevel@tonic-gate  */
1187c478bd9Sstevel@tonic-gate void
ehci_handle_ue(ehci_state_t * ehcip)1197c478bd9Sstevel@tonic-gate ehci_handle_ue(ehci_state_t	*ehcip)
1207c478bd9Sstevel@tonic-gate {
1217c478bd9Sstevel@tonic-gate 	usb_frame_number_t	before_frame_number, after_frame_number;
1227c478bd9Sstevel@tonic-gate 
1237c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
1247c478bd9Sstevel@tonic-gate 
1257c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
1267c478bd9Sstevel@tonic-gate 	    "ehci_handle_ue: Handling of UE interrupt");
1277c478bd9Sstevel@tonic-gate 
1287c478bd9Sstevel@tonic-gate 	/*
1297c478bd9Sstevel@tonic-gate 	 * First check whether current UE error occurred due to USB or
1307c478bd9Sstevel@tonic-gate 	 * due to some other subsystem. This can be verified by reading
1317c478bd9Sstevel@tonic-gate 	 * usb frame numbers before & after a delay of few milliseconds.
1327c478bd9Sstevel@tonic-gate 	 * If usb frame number read after delay is greater than the one
1337c478bd9Sstevel@tonic-gate 	 * read before delay, then, USB subsystem is fine. In this case,
1347c478bd9Sstevel@tonic-gate 	 * disable UE error interrupt and return without shutdowning the
1357c478bd9Sstevel@tonic-gate 	 * USB subsystem.
1367c478bd9Sstevel@tonic-gate 	 *
1377c478bd9Sstevel@tonic-gate 	 * Otherwise, if usb frame number read after delay is less than
1387c478bd9Sstevel@tonic-gate 	 * or equal to one read before the delay, then, current UE error
1397c478bd9Sstevel@tonic-gate 	 * occurred from USB subsystem. In this case,go ahead with actual
1407c478bd9Sstevel@tonic-gate 	 * UE error recovery procedure.
1417c478bd9Sstevel@tonic-gate 	 *
1427c478bd9Sstevel@tonic-gate 	 * Get the current usb frame number before waiting for few
1437c478bd9Sstevel@tonic-gate 	 * milliseconds.
1447c478bd9Sstevel@tonic-gate 	 */
1457c478bd9Sstevel@tonic-gate 	before_frame_number = ehci_get_current_frame_number(ehcip);
1467c478bd9Sstevel@tonic-gate 
1477c478bd9Sstevel@tonic-gate 	/* Wait for few milliseconds */
1487c478bd9Sstevel@tonic-gate 	drv_usecwait(EHCI_TIMEWAIT);
1497c478bd9Sstevel@tonic-gate 
1507c478bd9Sstevel@tonic-gate 	/*
1517c478bd9Sstevel@tonic-gate 	 * Get the current usb frame number after waiting for
1527c478bd9Sstevel@tonic-gate 	 * milliseconds.
1537c478bd9Sstevel@tonic-gate 	 */
1547c478bd9Sstevel@tonic-gate 	after_frame_number = ehci_get_current_frame_number(ehcip);
1557c478bd9Sstevel@tonic-gate 
1567c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
1577c478bd9Sstevel@tonic-gate 	    "ehci_handle_ue: Before Frame Number 0x%llx "
158112116d8Sfb 	    "After Frame Number 0x%llx",
159112116d8Sfb 	    (unsigned long long)before_frame_number,
160112116d8Sfb 	    (unsigned long long)after_frame_number);
1617c478bd9Sstevel@tonic-gate 
1627c478bd9Sstevel@tonic-gate 	if (after_frame_number > before_frame_number) {
1637c478bd9Sstevel@tonic-gate 
1647c478bd9Sstevel@tonic-gate 		/* Disable UE interrupt */
1657c478bd9Sstevel@tonic-gate 		Set_OpReg(ehci_interrupt, (Get_OpReg(ehci_interrupt) &
1667c478bd9Sstevel@tonic-gate 		    ~EHCI_INTR_HOST_SYSTEM_ERROR));
1677c478bd9Sstevel@tonic-gate 
1687c478bd9Sstevel@tonic-gate 		return;
1697c478bd9Sstevel@tonic-gate 	}
1707c478bd9Sstevel@tonic-gate 
1717c478bd9Sstevel@tonic-gate 	/*
1727c478bd9Sstevel@tonic-gate 	 * This UE is due to USB hardware error. Reset ehci controller
1737c478bd9Sstevel@tonic-gate 	 * and reprogram to bring it back to functional state.
1747c478bd9Sstevel@tonic-gate 	 */
1757c478bd9Sstevel@tonic-gate 	if ((ehci_do_soft_reset(ehcip)) != USB_SUCCESS) {
1767c478bd9Sstevel@tonic-gate 
1777c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L0(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
1787c478bd9Sstevel@tonic-gate 		    "Unrecoverable USB Hardware Error");
1797c478bd9Sstevel@tonic-gate 
1807c478bd9Sstevel@tonic-gate 		/* Disable UE interrupt */
1817c478bd9Sstevel@tonic-gate 		Set_OpReg(ehci_interrupt, (Get_OpReg(ehci_interrupt) &
1827c478bd9Sstevel@tonic-gate 		    ~EHCI_INTR_HOST_SYSTEM_ERROR));
1837c478bd9Sstevel@tonic-gate 
1847c478bd9Sstevel@tonic-gate 		/* Route all Root hub ports to Classic host controller */
1857c478bd9Sstevel@tonic-gate 		Set_OpReg(ehci_config_flag, EHCI_CONFIG_FLAG_CLASSIC);
1867c478bd9Sstevel@tonic-gate 
1877c478bd9Sstevel@tonic-gate 		/* Set host controller soft state to error */
1887c478bd9Sstevel@tonic-gate 		ehcip->ehci_hc_soft_state = EHCI_CTLR_ERROR_STATE;
1897c478bd9Sstevel@tonic-gate 	}
1907c478bd9Sstevel@tonic-gate }
1917c478bd9Sstevel@tonic-gate 
1927c478bd9Sstevel@tonic-gate 
1937c478bd9Sstevel@tonic-gate /*
1947c478bd9Sstevel@tonic-gate  * ehci_handle_frame_list_rollover:
1957c478bd9Sstevel@tonic-gate  *
1967c478bd9Sstevel@tonic-gate  * Update software based usb frame number part on every frame number
1977c478bd9Sstevel@tonic-gate  * overflow interrupt.
1987c478bd9Sstevel@tonic-gate  *
1997c478bd9Sstevel@tonic-gate  * Refer ehci spec 1.0, section 2.3.2, page 21 for more details.
2007c478bd9Sstevel@tonic-gate  *
2017c478bd9Sstevel@tonic-gate  * NOTE: This function is also called from POLLED MODE.
2027c478bd9Sstevel@tonic-gate  */
2037c478bd9Sstevel@tonic-gate void
ehci_handle_frame_list_rollover(ehci_state_t * ehcip)2047c478bd9Sstevel@tonic-gate ehci_handle_frame_list_rollover(ehci_state_t *ehcip)
2057c478bd9Sstevel@tonic-gate {
2067c478bd9Sstevel@tonic-gate 	ehcip->ehci_fno += (0x4000 -
2077c478bd9Sstevel@tonic-gate 	    (((Get_OpReg(ehci_frame_index) & 0x3FFF) ^
2087c478bd9Sstevel@tonic-gate 	    ehcip->ehci_fno) & 0x2000));
2097c478bd9Sstevel@tonic-gate 
2107c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
2117c478bd9Sstevel@tonic-gate 	    "ehci_handle_frame_list_rollover:"
212112116d8Sfb 	    "Frame Number Higher Part 0x%llx\n",
213112116d8Sfb 	    (unsigned long long)(ehcip->ehci_fno));
2147c478bd9Sstevel@tonic-gate }
2157c478bd9Sstevel@tonic-gate 
2167c478bd9Sstevel@tonic-gate 
2177c478bd9Sstevel@tonic-gate /*
2187c478bd9Sstevel@tonic-gate  * ehci_handle_endpoint_reclamation:
2197c478bd9Sstevel@tonic-gate  *
2207c478bd9Sstevel@tonic-gate  * Reclamation of Host Controller (HC) Endpoint Descriptors (QH).
2217c478bd9Sstevel@tonic-gate  */
2227c478bd9Sstevel@tonic-gate void
ehci_handle_endpoint_reclaimation(ehci_state_t * ehcip)2237c478bd9Sstevel@tonic-gate ehci_handle_endpoint_reclaimation(ehci_state_t	*ehcip)
2247c478bd9Sstevel@tonic-gate {
2257c478bd9Sstevel@tonic-gate 	usb_frame_number_t	current_frame_number;
2267c478bd9Sstevel@tonic-gate 	usb_frame_number_t	endpoint_frame_number;
2277c478bd9Sstevel@tonic-gate 	ehci_qh_t		*reclaim_qh;
2287c478bd9Sstevel@tonic-gate 
2297c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
2307c478bd9Sstevel@tonic-gate 	    "ehci_handle_endpoint_reclamation:");
2317c478bd9Sstevel@tonic-gate 
2327c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
2337c478bd9Sstevel@tonic-gate 
2347c478bd9Sstevel@tonic-gate 	current_frame_number = ehci_get_current_frame_number(ehcip);
2357c478bd9Sstevel@tonic-gate 
2367c478bd9Sstevel@tonic-gate 	/*
2377c478bd9Sstevel@tonic-gate 	 * Deallocate all Endpoint Descriptors (QH) which are on the
2387c478bd9Sstevel@tonic-gate 	 * reclamation list. These QH's are already removed from the
2397c478bd9Sstevel@tonic-gate 	 * interrupt lattice tree.
2407c478bd9Sstevel@tonic-gate 	 */
2417c478bd9Sstevel@tonic-gate 	while (ehcip->ehci_reclaim_list) {
2427c478bd9Sstevel@tonic-gate 
2437c478bd9Sstevel@tonic-gate 		reclaim_qh = ehcip->ehci_reclaim_list;
2447c478bd9Sstevel@tonic-gate 
2457c478bd9Sstevel@tonic-gate 		endpoint_frame_number = (usb_frame_number_t)(uintptr_t)
2467c478bd9Sstevel@tonic-gate 		    (EHCI_LOOKUP_ID(Get_QH(reclaim_qh->qh_reclaim_frame)));
2477c478bd9Sstevel@tonic-gate 
2487c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
2497c478bd9Sstevel@tonic-gate 		    "ehci_handle_endpoint_reclamation:"
2507c478bd9Sstevel@tonic-gate 		    "current frame number 0x%llx endpoint frame number 0x%llx",
251112116d8Sfb 		    (unsigned long long)current_frame_number,
252112116d8Sfb 		    (unsigned long long)endpoint_frame_number);
2537c478bd9Sstevel@tonic-gate 
2547c478bd9Sstevel@tonic-gate 		/*
2557c478bd9Sstevel@tonic-gate 		 * Deallocate current endpoint only if endpoint's usb frame
2567c478bd9Sstevel@tonic-gate 		 * number is less than or equal to current usb frame number.
2577c478bd9Sstevel@tonic-gate 		 *
2587c478bd9Sstevel@tonic-gate 		 * If endpoint's usb frame number is greater than the current
2597c478bd9Sstevel@tonic-gate 		 * usb frame number, ignore rest of the endpoints in the list
2607c478bd9Sstevel@tonic-gate 		 * since rest of the endpoints are inserted into the reclaim
2617c478bd9Sstevel@tonic-gate 		 * list later than the current reclaim endpoint.
2627c478bd9Sstevel@tonic-gate 		 */
2637c478bd9Sstevel@tonic-gate 		if (endpoint_frame_number > current_frame_number) {
2647c478bd9Sstevel@tonic-gate 			break;
2657c478bd9Sstevel@tonic-gate 		}
2667c478bd9Sstevel@tonic-gate 
2677c478bd9Sstevel@tonic-gate 		/* Get the next endpoint from the rec. list */
2687c478bd9Sstevel@tonic-gate 		ehcip->ehci_reclaim_list = ehci_qh_iommu_to_cpu(
2697c478bd9Sstevel@tonic-gate 		    ehcip, Get_QH(reclaim_qh->qh_reclaim_next));
2707c478bd9Sstevel@tonic-gate 
2717c478bd9Sstevel@tonic-gate 		/* Free 32bit ID */
2727c478bd9Sstevel@tonic-gate 		EHCI_FREE_ID((uint32_t)Get_QH(reclaim_qh->qh_reclaim_frame));
2737c478bd9Sstevel@tonic-gate 
2747c478bd9Sstevel@tonic-gate 		/* Deallocate the endpoint */
2757c478bd9Sstevel@tonic-gate 		ehci_deallocate_qh(ehcip, reclaim_qh);
2767c478bd9Sstevel@tonic-gate 	}
2777c478bd9Sstevel@tonic-gate }
2787c478bd9Sstevel@tonic-gate 
2797c478bd9Sstevel@tonic-gate 
2807c478bd9Sstevel@tonic-gate /*
2817c478bd9Sstevel@tonic-gate  * ehci_traverse_active_qtd_list:
2827c478bd9Sstevel@tonic-gate  */
2837c478bd9Sstevel@tonic-gate void
ehci_traverse_active_qtd_list(ehci_state_t * ehcip)2847c478bd9Sstevel@tonic-gate ehci_traverse_active_qtd_list(
2857c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip)
2867c478bd9Sstevel@tonic-gate {
2877c478bd9Sstevel@tonic-gate 	uint_t			state;		/* QTD state */
2887c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*curr_qtd = NULL; /* QTD pointers */
2897c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*next_qtd = NULL; /* QTD pointers */
2907c478bd9Sstevel@tonic-gate 	usb_cr_t		error;		/* Error from QTD */
2917c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw = NULL;	/* Transfer wrapper */
2927c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp = NULL;	/* Pipe private field */
2937c478bd9Sstevel@tonic-gate 
2947c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
2957c478bd9Sstevel@tonic-gate 	    "ehci_traverse_active_qtd_list:");
2967c478bd9Sstevel@tonic-gate 
2977c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
2987c478bd9Sstevel@tonic-gate 
2997c478bd9Sstevel@tonic-gate 	/* Sync QH and QTD pool */
3007c478bd9Sstevel@tonic-gate 	Sync_QH_QTD_Pool(ehcip);
3017c478bd9Sstevel@tonic-gate 
3027c478bd9Sstevel@tonic-gate 	/* Create done qtd list */
3037c478bd9Sstevel@tonic-gate 	curr_qtd = ehci_create_done_qtd_list(ehcip);
3047c478bd9Sstevel@tonic-gate 
3057c478bd9Sstevel@tonic-gate 	/* Traverse the list of transfer descriptors */
3067c478bd9Sstevel@tonic-gate 	while (curr_qtd) {
3077c478bd9Sstevel@tonic-gate 		/* Get next qtd from the active qtd list */
3087c478bd9Sstevel@tonic-gate 		next_qtd = ehci_qtd_iommu_to_cpu(ehcip,
3097c478bd9Sstevel@tonic-gate 		    Get_QTD(curr_qtd->qtd_active_qtd_next));
3107c478bd9Sstevel@tonic-gate 
3117c478bd9Sstevel@tonic-gate 		/* Check for QTD state */
3127c478bd9Sstevel@tonic-gate 		state = Get_QTD(curr_qtd->qtd_state);
3137c478bd9Sstevel@tonic-gate 
3147c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
3157c478bd9Sstevel@tonic-gate 		    "ehci_traverse_active_qtd_list:\n\t"
3167c478bd9Sstevel@tonic-gate 		    "curr_qtd = 0x%p state = 0x%x", (void *)curr_qtd, state);
3177c478bd9Sstevel@tonic-gate 
3187c478bd9Sstevel@tonic-gate 		/* Obtain the  transfer wrapper  for this QTD */
3197c478bd9Sstevel@tonic-gate 		tw = (ehci_trans_wrapper_t *)EHCI_LOOKUP_ID(
3207c478bd9Sstevel@tonic-gate 		    (uint32_t)Get_QTD(curr_qtd->qtd_trans_wrapper));
3217c478bd9Sstevel@tonic-gate 
3227c478bd9Sstevel@tonic-gate 		ASSERT(tw != NULL);
3237c478bd9Sstevel@tonic-gate 
3247c478bd9Sstevel@tonic-gate 		pp = tw->tw_pipe_private;
3257c478bd9Sstevel@tonic-gate 
3267c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
3277c478bd9Sstevel@tonic-gate 		    "ehci_traverse_active_qtd_list: "
328112116d8Sfb 		    "PP = 0x%p TW = 0x%p", (void *)pp, (void *)tw);
3297c478bd9Sstevel@tonic-gate 
3307c478bd9Sstevel@tonic-gate 		/*
3317c478bd9Sstevel@tonic-gate 		 * A QTD that is marked as RECLAIM has already been
3327c478bd9Sstevel@tonic-gate 		 * processed by QTD timeout handler & client driver
3337c478bd9Sstevel@tonic-gate 		 * has been informed through exception callback.
3347c478bd9Sstevel@tonic-gate 		 */
3357c478bd9Sstevel@tonic-gate 		if (state != EHCI_QTD_RECLAIM) {
3367c478bd9Sstevel@tonic-gate 			/* Look at the error status */
3377c478bd9Sstevel@tonic-gate 			error = ehci_parse_error(ehcip, curr_qtd);
3387c478bd9Sstevel@tonic-gate 
3397c478bd9Sstevel@tonic-gate 			if (error == USB_CR_OK) {
3407c478bd9Sstevel@tonic-gate 				ehci_handle_normal_qtd(ehcip, curr_qtd, tw);
3417c478bd9Sstevel@tonic-gate 			} else {
3427c478bd9Sstevel@tonic-gate 				/* handle the error condition */
3437c478bd9Sstevel@tonic-gate 				ehci_handle_error(ehcip, curr_qtd, error);
3447c478bd9Sstevel@tonic-gate 			}
3457c478bd9Sstevel@tonic-gate 		} else {
3467c478bd9Sstevel@tonic-gate 			USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
3477c478bd9Sstevel@tonic-gate 			    "ehci_traverse_active_qtd_list: "
3487c478bd9Sstevel@tonic-gate 			    "QTD State = %d", state);
3497c478bd9Sstevel@tonic-gate 		}
3507c478bd9Sstevel@tonic-gate 
3517c478bd9Sstevel@tonic-gate 		/* Deallocate this transfer descriptor */
3527c478bd9Sstevel@tonic-gate 		ehci_deallocate_qtd(ehcip, curr_qtd);
3537c478bd9Sstevel@tonic-gate 
3547c478bd9Sstevel@tonic-gate 		/*
3557c478bd9Sstevel@tonic-gate 		 * Deallocate the transfer wrapper if there are no more
3567c478bd9Sstevel@tonic-gate 		 * QTD's for the transfer wrapper.  ehci_deallocate_tw()
3577c478bd9Sstevel@tonic-gate 		 * will  not deallocate the tw for a periodic  endpoint
3587c478bd9Sstevel@tonic-gate 		 * since it will always have a QTD attached to it.
3597c478bd9Sstevel@tonic-gate 		 */
3607c478bd9Sstevel@tonic-gate 		ehci_deallocate_tw(ehcip, pp, tw);
3617c478bd9Sstevel@tonic-gate 
3627c478bd9Sstevel@tonic-gate 		curr_qtd = next_qtd;
3637c478bd9Sstevel@tonic-gate 	}
3647c478bd9Sstevel@tonic-gate }
3657c478bd9Sstevel@tonic-gate 
3667c478bd9Sstevel@tonic-gate 
3677c478bd9Sstevel@tonic-gate /*
3687c478bd9Sstevel@tonic-gate  * ehci_create_done_qtd_list:
3697c478bd9Sstevel@tonic-gate  *
3707c478bd9Sstevel@tonic-gate  * Create done qtd list from active qtd list.
3717c478bd9Sstevel@tonic-gate  */
3727c478bd9Sstevel@tonic-gate ehci_qtd_t *
ehci_create_done_qtd_list(ehci_state_t * ehcip)3737c478bd9Sstevel@tonic-gate ehci_create_done_qtd_list(
3747c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip)
3757c478bd9Sstevel@tonic-gate {
3767c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*curr_qtd = NULL, *next_qtd = NULL;
3777c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*done_qtd_list = NULL, *last_done_qtd = NULL;
3787c478bd9Sstevel@tonic-gate 
3797c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
3807c478bd9Sstevel@tonic-gate 	    "ehci_create_done_qtd_list:");
3817c478bd9Sstevel@tonic-gate 
3827c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
3837c478bd9Sstevel@tonic-gate 
3847c478bd9Sstevel@tonic-gate 	curr_qtd = ehcip->ehci_active_qtd_list;
3857c478bd9Sstevel@tonic-gate 
3867c478bd9Sstevel@tonic-gate 	while (curr_qtd) {
3877c478bd9Sstevel@tonic-gate 
3887c478bd9Sstevel@tonic-gate 		/* Get next qtd from the active qtd list */
3897c478bd9Sstevel@tonic-gate 		next_qtd = ehci_qtd_iommu_to_cpu(ehcip,
3907c478bd9Sstevel@tonic-gate 		    Get_QTD(curr_qtd->qtd_active_qtd_next));
3917c478bd9Sstevel@tonic-gate 
3927c478bd9Sstevel@tonic-gate 		/* Check this QTD has been processed by Host Controller */
3937c478bd9Sstevel@tonic-gate 		if (!(Get_QTD(curr_qtd->qtd_ctrl) &
3947c478bd9Sstevel@tonic-gate 		    EHCI_QTD_CTRL_ACTIVE_XACT)) {
3957c478bd9Sstevel@tonic-gate 
3967c478bd9Sstevel@tonic-gate 			/* Remove this QTD from active QTD list */
3977c478bd9Sstevel@tonic-gate 			ehci_remove_qtd_from_active_qtd_list(ehcip, curr_qtd);
3987c478bd9Sstevel@tonic-gate 
399*6aef9e11SToomas Soome 			Set_QTD(curr_qtd->qtd_active_qtd_next, 0);
4007c478bd9Sstevel@tonic-gate 
4017c478bd9Sstevel@tonic-gate 			if (done_qtd_list) {
4027c478bd9Sstevel@tonic-gate 				Set_QTD(last_done_qtd->qtd_active_qtd_next,
4037c478bd9Sstevel@tonic-gate 				    ehci_qtd_cpu_to_iommu(ehcip, curr_qtd));
4047c478bd9Sstevel@tonic-gate 
4057c478bd9Sstevel@tonic-gate 				last_done_qtd = curr_qtd;
4067c478bd9Sstevel@tonic-gate 			} else {
4077c478bd9Sstevel@tonic-gate 				done_qtd_list = curr_qtd;
4087c478bd9Sstevel@tonic-gate 				last_done_qtd = curr_qtd;
4097c478bd9Sstevel@tonic-gate 			}
4107c478bd9Sstevel@tonic-gate 		}
4117c478bd9Sstevel@tonic-gate 
4127c478bd9Sstevel@tonic-gate 		curr_qtd = next_qtd;
4137c478bd9Sstevel@tonic-gate 	}
4147c478bd9Sstevel@tonic-gate 
4157c478bd9Sstevel@tonic-gate 	return (done_qtd_list);
4167c478bd9Sstevel@tonic-gate }
4177c478bd9Sstevel@tonic-gate 
4187c478bd9Sstevel@tonic-gate 
4197c478bd9Sstevel@tonic-gate /*
4207c478bd9Sstevel@tonic-gate  * ehci_parse_error:
4217c478bd9Sstevel@tonic-gate  *
4227c478bd9Sstevel@tonic-gate  * Parse the result for any errors.
4237c478bd9Sstevel@tonic-gate  */
4247c478bd9Sstevel@tonic-gate static	usb_cr_t
ehci_parse_error(ehci_state_t * ehcip,ehci_qtd_t * qtd)4257c478bd9Sstevel@tonic-gate ehci_parse_error(
4267c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
4277c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd)
4287c478bd9Sstevel@tonic-gate {
4297c478bd9Sstevel@tonic-gate 	uint_t			ctrl;
4307c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw;
4317c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp;
4327c478bd9Sstevel@tonic-gate 	uint_t			flag;
4337c478bd9Sstevel@tonic-gate 	usb_cr_t		error;
4347c478bd9Sstevel@tonic-gate 
4357c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
4367c478bd9Sstevel@tonic-gate 	    "ehci_parse_error:");
4377c478bd9Sstevel@tonic-gate 
4387c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
4397c478bd9Sstevel@tonic-gate 
4407c478bd9Sstevel@tonic-gate 	ASSERT(qtd != NULL);
4417c478bd9Sstevel@tonic-gate 
4427c478bd9Sstevel@tonic-gate 	/* Obtain the transfer wrapper from the QTD */
4437c478bd9Sstevel@tonic-gate 	tw = (ehci_trans_wrapper_t *)
4447c478bd9Sstevel@tonic-gate 	    EHCI_LOOKUP_ID((uint32_t)Get_QTD(qtd->qtd_trans_wrapper));
4457c478bd9Sstevel@tonic-gate 
4467c478bd9Sstevel@tonic-gate 	ASSERT(tw != NULL);
4477c478bd9Sstevel@tonic-gate 
4487c478bd9Sstevel@tonic-gate 	/* Obtain the pipe private structure */
4497c478bd9Sstevel@tonic-gate 	pp = tw->tw_pipe_private;
4507c478bd9Sstevel@tonic-gate 
4517c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
452112116d8Sfb 	    "ehci_parse_error: PP 0x%p TW 0x%p", (void *)pp, (void *)tw);
4537c478bd9Sstevel@tonic-gate 
4547c478bd9Sstevel@tonic-gate 	ctrl = (uint_t)Get_QTD(qtd->qtd_ctrl);
4557c478bd9Sstevel@tonic-gate 
4567c478bd9Sstevel@tonic-gate 	/*
4577c478bd9Sstevel@tonic-gate 	 * Check the condition code of completed QTD and report errors
4587c478bd9Sstevel@tonic-gate 	 * if any. This checking will be done both for the general and
4597c478bd9Sstevel@tonic-gate 	 * the isochronous QTDs.
4607c478bd9Sstevel@tonic-gate 	 */
4617c478bd9Sstevel@tonic-gate 	if ((error = ehci_check_for_error(ehcip, pp, tw, qtd, ctrl)) !=
4627c478bd9Sstevel@tonic-gate 	    USB_CR_OK) {
4637c478bd9Sstevel@tonic-gate 		flag = EHCI_REMOVE_XFER_ALWAYS;
4647c478bd9Sstevel@tonic-gate 	} else {
4657c478bd9Sstevel@tonic-gate 		flag  = EHCI_REMOVE_XFER_IFLAST;
4667c478bd9Sstevel@tonic-gate 	}
4677c478bd9Sstevel@tonic-gate 
4687c478bd9Sstevel@tonic-gate 	/* Stop the transfer timer */
4697c478bd9Sstevel@tonic-gate 	ehci_stop_xfer_timer(ehcip, tw, flag);
4707c478bd9Sstevel@tonic-gate 
4717c478bd9Sstevel@tonic-gate 	return (error);
4727c478bd9Sstevel@tonic-gate }
4737c478bd9Sstevel@tonic-gate 
4747c478bd9Sstevel@tonic-gate 
4757c478bd9Sstevel@tonic-gate /*
4767c478bd9Sstevel@tonic-gate  * ehci_check_for_error:
4777c478bd9Sstevel@tonic-gate  *
4787c478bd9Sstevel@tonic-gate  * Check for any errors.
4797c478bd9Sstevel@tonic-gate  *
4807c478bd9Sstevel@tonic-gate  * NOTE: This function is also called from POLLED MODE.
4817c478bd9Sstevel@tonic-gate  */
4827c478bd9Sstevel@tonic-gate usb_cr_t
ehci_check_for_error(ehci_state_t * ehcip,ehci_pipe_private_t * pp,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd,uint_t ctrl)4837c478bd9Sstevel@tonic-gate ehci_check_for_error(
4847c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
4857c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp,
4867c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
4877c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
4887c478bd9Sstevel@tonic-gate 	uint_t			ctrl)
4897c478bd9Sstevel@tonic-gate {
4907c478bd9Sstevel@tonic-gate 	usb_cr_t		error = USB_CR_OK;
4917c478bd9Sstevel@tonic-gate 	uint_t			status, speed, mask;
4927c478bd9Sstevel@tonic-gate 
4937c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
4947c478bd9Sstevel@tonic-gate 	    "ehci_check_for_error: qtd = 0x%p ctrl = 0x%x",
495112116d8Sfb 	    (void *)qtd, ctrl);
4967c478bd9Sstevel@tonic-gate 
4977c478bd9Sstevel@tonic-gate 	/*
4987c478bd9Sstevel@tonic-gate 	 * Find the usb device speed and get the corresponding
4997c478bd9Sstevel@tonic-gate 	 * error status mask.
5007c478bd9Sstevel@tonic-gate 	 */
5017c478bd9Sstevel@tonic-gate 	speed = Get_QH(pp->pp_qh->qh_ctrl) & EHCI_QH_CTRL_ED_SPEED;
5027c478bd9Sstevel@tonic-gate 	mask = (speed == EHCI_QH_CTRL_ED_HIGH_SPEED)?
5037c478bd9Sstevel@tonic-gate 	    EHCI_QTD_CTRL_HS_XACT_STATUS : EHCI_QTD_CTRL_NON_HS_XACT_STATUS;
5047c478bd9Sstevel@tonic-gate 
5057c478bd9Sstevel@tonic-gate 	/* Exclude halted transaction error condition */
5067c478bd9Sstevel@tonic-gate 	status = ctrl & EHCI_QTD_CTRL_XACT_STATUS & ~EHCI_QTD_CTRL_HALTED_XACT;
5077c478bd9Sstevel@tonic-gate 
5087c478bd9Sstevel@tonic-gate 	switch (status & mask) {
5097c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_NO_ERROR:
5107c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5117c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: No Error");
5127c478bd9Sstevel@tonic-gate 		error = USB_CR_OK;
5137c478bd9Sstevel@tonic-gate 		break;
5147c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_ACTIVE_XACT:
5157c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5167c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Not accessed");
5177c478bd9Sstevel@tonic-gate 		error = USB_CR_NOT_ACCESSED;
5187c478bd9Sstevel@tonic-gate 		break;
5197c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_HALTED_XACT:
5207c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5217c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Halted");
5227c478bd9Sstevel@tonic-gate 		error = USB_CR_STALL;
5237c478bd9Sstevel@tonic-gate 		break;
5247c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_BABBLE_DETECTED:
5257c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5267c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Babble Detected");
5277c478bd9Sstevel@tonic-gate 		error = USB_CR_DATA_OVERRUN;
5287c478bd9Sstevel@tonic-gate 		break;
5297c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_XACT_ERROR:
5307c478bd9Sstevel@tonic-gate 		/*
5317c478bd9Sstevel@tonic-gate 		 * An xacterr bit of one is not necessarily an error,
5327c478bd9Sstevel@tonic-gate 		 * the transaction might have completed successfully
5337c478bd9Sstevel@tonic-gate 		 * after some retries.
5347c478bd9Sstevel@tonic-gate 		 *
5357c478bd9Sstevel@tonic-gate 		 * Try to detect the case when the queue is halted,
5367c478bd9Sstevel@tonic-gate 		 * because the error counter was decremented from one
5377c478bd9Sstevel@tonic-gate 		 * down to zero after a transaction error.
5387c478bd9Sstevel@tonic-gate 		 */
5397c478bd9Sstevel@tonic-gate 		if (ctrl & EHCI_QTD_CTRL_HALTED_XACT && (ctrl &
5407c478bd9Sstevel@tonic-gate 		    EHCI_QTD_CTRL_ERR_COUNT_MASK) == 0) {
5417c478bd9Sstevel@tonic-gate 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5427c478bd9Sstevel@tonic-gate 			    "ehci_check_for_error: Transaction Error");
5437c478bd9Sstevel@tonic-gate 			error = USB_CR_DEV_NOT_RESP;
5447c478bd9Sstevel@tonic-gate 		} else {
5457c478bd9Sstevel@tonic-gate 			USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5467c478bd9Sstevel@tonic-gate 			    "ehci_check_for_error: No Error");
5477c478bd9Sstevel@tonic-gate 			error = USB_CR_OK;
5487c478bd9Sstevel@tonic-gate 		}
5497c478bd9Sstevel@tonic-gate 		break;
5503fbbb872Ssl 	case EHCI_QTD_CTRL_DATA_BUFFER_ERROR:
5513fbbb872Ssl 		/*
5523fbbb872Ssl 		 * Data buffer error is not necessarily an error,
5533fbbb872Ssl 		 * the transaction might have completed successfully
5543fbbb872Ssl 		 * after some retries. It can be ignored if the
5553fbbb872Ssl 		 * queue is not halted.
5563fbbb872Ssl 		 */
5573fbbb872Ssl 		if (!(ctrl & EHCI_QTD_CTRL_HALTED_XACT)) {
5583fbbb872Ssl 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5593fbbb872Ssl 			    "ehci_check_for_error: Data buffer overrun or "
5603fbbb872Ssl 			    "underrun ignored");
5613fbbb872Ssl 			error = USB_CR_OK;
5623fbbb872Ssl 			break;
5633fbbb872Ssl 		}
5643fbbb872Ssl 
5653fbbb872Ssl 		if (tw->tw_direction == EHCI_QTD_CTRL_IN_PID) {
5663fbbb872Ssl 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5673fbbb872Ssl 			    "ehci_check_for_error: Buffer Overrun");
5683fbbb872Ssl 			error = USB_CR_BUFFER_OVERRUN;
5693fbbb872Ssl 		} else	{
5703fbbb872Ssl 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5713fbbb872Ssl 			    "ehci_check_for_error: Buffer Underrun");
5723fbbb872Ssl 			error = USB_CR_BUFFER_UNDERRUN;
5733fbbb872Ssl 		}
5743fbbb872Ssl 		break;
5757c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_MISSED_uFRAME:
5767c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5777c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Missed uFrame");
5787c478bd9Sstevel@tonic-gate 		error = USB_CR_NOT_ACCESSED;
5797c478bd9Sstevel@tonic-gate 		break;
5807c478bd9Sstevel@tonic-gate 	case EHCI_QTD_CTRL_PRD_SPLIT_XACT_ERR:
5817c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5827c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Periodic split-transaction "
5837c478bd9Sstevel@tonic-gate 		    "receives an error handshake");
5847c478bd9Sstevel@tonic-gate 		error = USB_CR_UNSPECIFIED_ERR;
5857c478bd9Sstevel@tonic-gate 		break;
5867c478bd9Sstevel@tonic-gate 	default:
5877c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
5887c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Unspecified Error");
5897c478bd9Sstevel@tonic-gate 		error = USB_CR_UNSPECIFIED_ERR;
5907c478bd9Sstevel@tonic-gate 		break;
5917c478bd9Sstevel@tonic-gate 	}
5927c478bd9Sstevel@tonic-gate 
5937c478bd9Sstevel@tonic-gate 	/*
5947c478bd9Sstevel@tonic-gate 	 * Check for halted transaction error condition.
5957c478bd9Sstevel@tonic-gate 	 * Under short xfer conditions, EHCI HC will not return an error
5967c478bd9Sstevel@tonic-gate 	 * or halt the QH.  This is done manually later in
5977c478bd9Sstevel@tonic-gate 	 * ehci_check_for_short_xfer.
5987c478bd9Sstevel@tonic-gate 	 */
5997c478bd9Sstevel@tonic-gate 	if ((ctrl & EHCI_QTD_CTRL_HALTED_XACT) && (error == USB_CR_OK)) {
6007c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
6017c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Halted");
6027c478bd9Sstevel@tonic-gate 		error = USB_CR_STALL;
6037c478bd9Sstevel@tonic-gate 	}
6047c478bd9Sstevel@tonic-gate 
6057c478bd9Sstevel@tonic-gate 	if (error == USB_CR_OK) {
6067c478bd9Sstevel@tonic-gate 		error = ehci_check_for_short_xfer(ehcip, pp, tw, qtd);
6077c478bd9Sstevel@tonic-gate 	}
6087c478bd9Sstevel@tonic-gate 
6097c478bd9Sstevel@tonic-gate 	if (error) {
6107c478bd9Sstevel@tonic-gate 		uint_t qh_ctrl =  Get_QH(pp->pp_qh->qh_ctrl);
6117c478bd9Sstevel@tonic-gate 
6127c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
6137c478bd9Sstevel@tonic-gate 		    "ehci_check_for_error: Error %d Device address %d "
6147c478bd9Sstevel@tonic-gate 		    "Endpoint number %d", error,
6157c478bd9Sstevel@tonic-gate 		    (qh_ctrl & EHCI_QH_CTRL_DEVICE_ADDRESS),
6167c478bd9Sstevel@tonic-gate 		    ((qh_ctrl & EHCI_QH_CTRL_ED_NUMBER) >>
6177c478bd9Sstevel@tonic-gate 		    EHCI_QH_CTRL_ED_NUMBER_SHIFT));
6187c478bd9Sstevel@tonic-gate 	}
6197c478bd9Sstevel@tonic-gate 
6207c478bd9Sstevel@tonic-gate 	return (error);
6217c478bd9Sstevel@tonic-gate }
6227c478bd9Sstevel@tonic-gate 
6237c478bd9Sstevel@tonic-gate /*
6247c478bd9Sstevel@tonic-gate  * ehci_check_for_short_xfer:
6257c478bd9Sstevel@tonic-gate  *
6267c478bd9Sstevel@tonic-gate  * Check to see if there was a short xfer condition.
6277c478bd9Sstevel@tonic-gate  *
6287c478bd9Sstevel@tonic-gate  * NOTE: This function is also called from POLLED MODE.
6297c478bd9Sstevel@tonic-gate  *	 But it doesn't do anything.
6307c478bd9Sstevel@tonic-gate  */
6317c478bd9Sstevel@tonic-gate static usb_cr_t
ehci_check_for_short_xfer(ehci_state_t * ehcip,ehci_pipe_private_t * pp,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd)6327c478bd9Sstevel@tonic-gate ehci_check_for_short_xfer(
6337c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
6347c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp,
6357c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
6367c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd)
6377c478bd9Sstevel@tonic-gate {
6387c478bd9Sstevel@tonic-gate 	usb_cr_t		error = USB_CR_OK;
6397c478bd9Sstevel@tonic-gate 	usb_ep_descr_t		*eptd;
6407c478bd9Sstevel@tonic-gate 	uchar_t			attributes;
6417c478bd9Sstevel@tonic-gate 	uint32_t		residue = 0;
6427c478bd9Sstevel@tonic-gate 	usb_req_attrs_t		xfer_attrs;
6437c478bd9Sstevel@tonic-gate 	size_t			length;
6447c478bd9Sstevel@tonic-gate 	mblk_t			*mp = NULL;
6457c478bd9Sstevel@tonic-gate 	usb_opaque_t		xfer_reqp;
6467c478bd9Sstevel@tonic-gate 
6477c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
6487c478bd9Sstevel@tonic-gate 	    "ehci_check_for_short_xfer:");
6497c478bd9Sstevel@tonic-gate 
6507c478bd9Sstevel@tonic-gate 	if (pp->pp_flag == EHCI_POLLED_MODE_FLAG) {
6517c478bd9Sstevel@tonic-gate 
6527c478bd9Sstevel@tonic-gate 		return (error);
6537c478bd9Sstevel@tonic-gate 	}
6547c478bd9Sstevel@tonic-gate 
6557c478bd9Sstevel@tonic-gate 	/*
6567c478bd9Sstevel@tonic-gate 	 * Check for short xfer error.	If this is a control pipe, only check
6577c478bd9Sstevel@tonic-gate 	 * if it is in the data phase.
6587c478bd9Sstevel@tonic-gate 	 */
6597c478bd9Sstevel@tonic-gate 	eptd = &pp->pp_pipe_handle->p_ep;
6607c478bd9Sstevel@tonic-gate 	attributes = eptd->bmAttributes & USB_EP_ATTR_MASK;
6617c478bd9Sstevel@tonic-gate 
6627c478bd9Sstevel@tonic-gate 	switch (attributes) {
6637c478bd9Sstevel@tonic-gate 	case USB_EP_ATTR_CONTROL:
6647c478bd9Sstevel@tonic-gate 		if (Get_QTD(qtd->qtd_ctrl_phase) !=
6657c478bd9Sstevel@tonic-gate 		    EHCI_CTRL_DATA_PHASE) {
6667c478bd9Sstevel@tonic-gate 
6677c478bd9Sstevel@tonic-gate 			break;
6687c478bd9Sstevel@tonic-gate 		}
6697c478bd9Sstevel@tonic-gate 		/* FALLTHROUGH */
6707c478bd9Sstevel@tonic-gate 	case USB_EP_ATTR_BULK:
6717c478bd9Sstevel@tonic-gate 	case USB_EP_ATTR_INTR:
6727c478bd9Sstevel@tonic-gate 		/*
6737c478bd9Sstevel@tonic-gate 		 * If "Total bytes of xfer" in control field of
6747c478bd9Sstevel@tonic-gate 		 * Transfer Descriptor (QTD) is not equal to zero,
6757c478bd9Sstevel@tonic-gate 		 * then, we sent/received less data from the usb
6767c478bd9Sstevel@tonic-gate 		 * device than requested. In that case, get the
6777c478bd9Sstevel@tonic-gate 		 * actual received data size.
6787c478bd9Sstevel@tonic-gate 		 */
6797c478bd9Sstevel@tonic-gate 		residue = (Get_QTD(qtd->qtd_ctrl) &
6807c478bd9Sstevel@tonic-gate 		    EHCI_QTD_CTRL_BYTES_TO_XFER) >>
6817c478bd9Sstevel@tonic-gate 		    EHCI_QTD_CTRL_BYTES_TO_XFER_SHIFT;
6827c478bd9Sstevel@tonic-gate 
6837c478bd9Sstevel@tonic-gate 		break;
6847c478bd9Sstevel@tonic-gate 	case USB_EP_ATTR_ISOCH:
6857c478bd9Sstevel@tonic-gate 
6867c478bd9Sstevel@tonic-gate 		break;
6877c478bd9Sstevel@tonic-gate 	}
6887c478bd9Sstevel@tonic-gate 
6897c478bd9Sstevel@tonic-gate 	if (residue) {
6907c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
6917c478bd9Sstevel@tonic-gate 		    "ehci_check_for_short_xfer: residue=%d direction=0x%x",
6927c478bd9Sstevel@tonic-gate 		    residue, tw->tw_direction);
6937c478bd9Sstevel@tonic-gate 
6943304303fSsl 		length = Get_QTD(qtd->qtd_xfer_offs) +
6953304303fSsl 		    Get_QTD(qtd->qtd_xfer_len) - residue;
6967c478bd9Sstevel@tonic-gate 
6977c478bd9Sstevel@tonic-gate 		if (tw->tw_direction == EHCI_QTD_CTRL_IN_PID) {
6987c478bd9Sstevel@tonic-gate 			xfer_attrs = ehci_get_xfer_attrs(ehcip, pp, tw);
6997c478bd9Sstevel@tonic-gate 
7007c478bd9Sstevel@tonic-gate 			if (xfer_attrs & USB_ATTRS_SHORT_XFER_OK) {
7017c478bd9Sstevel@tonic-gate 				ehci_cleanup_data_underrun(ehcip, tw, qtd);
7027c478bd9Sstevel@tonic-gate 			} else {
7037c478bd9Sstevel@tonic-gate 				/* Halt the pipe to mirror OHCI behavior */
7047c478bd9Sstevel@tonic-gate 				Set_QH(pp->pp_qh->qh_status,
7057c478bd9Sstevel@tonic-gate 				    ((Get_QH(pp->pp_qh->qh_status) &
70697b92364Ssl 				    ~EHCI_QH_STS_ACTIVE) |
70797b92364Ssl 				    EHCI_QH_STS_HALTED));
7087c478bd9Sstevel@tonic-gate 				error = USB_CR_DATA_UNDERRUN;
7097c478bd9Sstevel@tonic-gate 			}
7107c478bd9Sstevel@tonic-gate 
7117c478bd9Sstevel@tonic-gate 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
7127c478bd9Sstevel@tonic-gate 			    "ehci_check_for_short_xfer: requested data=%lu "
7137c478bd9Sstevel@tonic-gate 			    "received data=%lu", tw->tw_length, length);
7147c478bd9Sstevel@tonic-gate 
7157c478bd9Sstevel@tonic-gate 			switch (attributes) {
7167c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_CONTROL:
7177c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_BULK:
7187c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_INTR:
7197c478bd9Sstevel@tonic-gate 				/* Save the actual received length */
7207c478bd9Sstevel@tonic-gate 				tw->tw_length = length;
7217c478bd9Sstevel@tonic-gate 
7227c478bd9Sstevel@tonic-gate 				break;
7237c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_ISOCH:
7247c478bd9Sstevel@tonic-gate 			default:
7257c478bd9Sstevel@tonic-gate 
7267c478bd9Sstevel@tonic-gate 				break;
7277c478bd9Sstevel@tonic-gate 			}
7287c478bd9Sstevel@tonic-gate 		} else {
7297c478bd9Sstevel@tonic-gate 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
7307c478bd9Sstevel@tonic-gate 			    "ehci_check_for_short_xfer: requested data=%lu "
7317c478bd9Sstevel@tonic-gate 			    "sent data=%lu", tw->tw_length, length);
7327c478bd9Sstevel@tonic-gate 
7337c478bd9Sstevel@tonic-gate 			xfer_reqp = tw->tw_curr_xfer_reqp;
7347c478bd9Sstevel@tonic-gate 
7357c478bd9Sstevel@tonic-gate 			switch (attributes) {
7367c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_CONTROL:
7377c478bd9Sstevel@tonic-gate 
7387c478bd9Sstevel@tonic-gate 				break;
7397c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_BULK:
7407c478bd9Sstevel@tonic-gate 				mp = (mblk_t *)((usb_bulk_req_t *)
7417c478bd9Sstevel@tonic-gate 				    (xfer_reqp))->bulk_data;
7427c478bd9Sstevel@tonic-gate 
7437c478bd9Sstevel@tonic-gate 				/* Increment the read pointer */
7447c478bd9Sstevel@tonic-gate 				mp->b_rptr = mp->b_rptr + length;
7457c478bd9Sstevel@tonic-gate 
7467c478bd9Sstevel@tonic-gate 				break;
7477c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_INTR:
7487c478bd9Sstevel@tonic-gate 				mp = (mblk_t *)((usb_intr_req_t *)
7497c478bd9Sstevel@tonic-gate 				    (xfer_reqp))->intr_data;
7507c478bd9Sstevel@tonic-gate 
7517c478bd9Sstevel@tonic-gate 				/* Increment the read pointer */
7527c478bd9Sstevel@tonic-gate 				mp->b_rptr = mp->b_rptr + length;
7537c478bd9Sstevel@tonic-gate 
7547c478bd9Sstevel@tonic-gate 				break;
7557c478bd9Sstevel@tonic-gate 			case USB_EP_ATTR_ISOCH:
7567c478bd9Sstevel@tonic-gate 			default:
7577c478bd9Sstevel@tonic-gate 
7587c478bd9Sstevel@tonic-gate 				break;
7597c478bd9Sstevel@tonic-gate 			}
7607c478bd9Sstevel@tonic-gate 		}
7617c478bd9Sstevel@tonic-gate 	}
7627c478bd9Sstevel@tonic-gate 
7637c478bd9Sstevel@tonic-gate 	return (error);
7647c478bd9Sstevel@tonic-gate }
7657c478bd9Sstevel@tonic-gate 
7667c478bd9Sstevel@tonic-gate /*
7677c478bd9Sstevel@tonic-gate  * ehci_handle_error:
7687c478bd9Sstevel@tonic-gate  *
7697c478bd9Sstevel@tonic-gate  * Inform USBA about occurred transaction errors by calling the USBA callback
7707c478bd9Sstevel@tonic-gate  * routine.
7717c478bd9Sstevel@tonic-gate  */
7727c478bd9Sstevel@tonic-gate void
ehci_handle_error(ehci_state_t * ehcip,ehci_qtd_t * qtd,usb_cr_t error)7737c478bd9Sstevel@tonic-gate ehci_handle_error(
7747c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
7757c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
7767c478bd9Sstevel@tonic-gate 	usb_cr_t		error)
7777c478bd9Sstevel@tonic-gate {
7787c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw;
7797c478bd9Sstevel@tonic-gate 	usba_pipe_handle_data_t	*ph;
7807c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp;
7817c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*tw_qtd = qtd;
7827c478bd9Sstevel@tonic-gate 	uchar_t			attributes;
7837c478bd9Sstevel@tonic-gate 	usb_intr_req_t		*curr_intr_reqp;
7847c478bd9Sstevel@tonic-gate 
7857c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
7867c478bd9Sstevel@tonic-gate 	    "ehci_handle_error: error = 0x%x", error);
7877c478bd9Sstevel@tonic-gate 
7887c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
7897c478bd9Sstevel@tonic-gate 
7907c478bd9Sstevel@tonic-gate 	ASSERT(qtd != NULL);
7917c478bd9Sstevel@tonic-gate 
7927c478bd9Sstevel@tonic-gate 	/* Print the values in the qtd */
7937c478bd9Sstevel@tonic-gate 	ehci_print_qtd(ehcip, qtd);
7947c478bd9Sstevel@tonic-gate 
7957c478bd9Sstevel@tonic-gate 	/* Obtain the transfer wrapper from the QTD */
7967c478bd9Sstevel@tonic-gate 	tw = (ehci_trans_wrapper_t *)
7977c478bd9Sstevel@tonic-gate 	    EHCI_LOOKUP_ID((uint32_t)Get_QTD(qtd->qtd_trans_wrapper));
7987c478bd9Sstevel@tonic-gate 
7997c478bd9Sstevel@tonic-gate 	ASSERT(tw != NULL);
8007c478bd9Sstevel@tonic-gate 
8017c478bd9Sstevel@tonic-gate 	/* Obtain the pipe private structure */
8027c478bd9Sstevel@tonic-gate 	pp = tw->tw_pipe_private;
8037c478bd9Sstevel@tonic-gate 
8047c478bd9Sstevel@tonic-gate 	ph = tw->tw_pipe_private->pp_pipe_handle;
8057c478bd9Sstevel@tonic-gate 	attributes = ph->p_ep.bmAttributes & USB_EP_ATTR_MASK;
8067c478bd9Sstevel@tonic-gate 
8077c478bd9Sstevel@tonic-gate 	/*
8087c478bd9Sstevel@tonic-gate 	 * Mark all QTDs belongs to this TW as RECLAIM
8097c478bd9Sstevel@tonic-gate 	 * so that we don't process them by mistake.
8107c478bd9Sstevel@tonic-gate 	 */
8117c478bd9Sstevel@tonic-gate 	while (tw_qtd) {
8127c478bd9Sstevel@tonic-gate 		/* Set QTD state to RECLAIM */
8137c478bd9Sstevel@tonic-gate 		Set_QTD(tw_qtd->qtd_state, EHCI_QTD_RECLAIM);
8147c478bd9Sstevel@tonic-gate 
8157c478bd9Sstevel@tonic-gate 		/* Get the next QTD from the wrapper */
8167c478bd9Sstevel@tonic-gate 		tw_qtd = ehci_qtd_iommu_to_cpu(ehcip,
8177c478bd9Sstevel@tonic-gate 		    Get_QTD(tw_qtd->qtd_tw_next_qtd));
8187c478bd9Sstevel@tonic-gate 	}
8197c478bd9Sstevel@tonic-gate 
8207c478bd9Sstevel@tonic-gate 	/*
8217c478bd9Sstevel@tonic-gate 	 * Special error handling
8227c478bd9Sstevel@tonic-gate 	 */
8237c478bd9Sstevel@tonic-gate 	if (tw->tw_direction == EHCI_QTD_CTRL_IN_PID) {
8247c478bd9Sstevel@tonic-gate 
8257c478bd9Sstevel@tonic-gate 		switch (attributes) {
8267c478bd9Sstevel@tonic-gate 		case USB_EP_ATTR_CONTROL:
8277c478bd9Sstevel@tonic-gate 			if (((ph->p_ep.bmAttributes &
8287c478bd9Sstevel@tonic-gate 			    USB_EP_ATTR_MASK) ==
8297c478bd9Sstevel@tonic-gate 			    USB_EP_ATTR_CONTROL) &&
8307c478bd9Sstevel@tonic-gate 			    (Get_QTD(qtd->qtd_ctrl_phase) ==
8317c478bd9Sstevel@tonic-gate 			    EHCI_CTRL_SETUP_PHASE)) {
8327c478bd9Sstevel@tonic-gate 
8337c478bd9Sstevel@tonic-gate 				break;
8347c478bd9Sstevel@tonic-gate 			}
8357c478bd9Sstevel@tonic-gate 			/* FALLTHROUGH */
8367c478bd9Sstevel@tonic-gate 		case USB_EP_ATTR_BULK:
8377c478bd9Sstevel@tonic-gate 			/*
8387c478bd9Sstevel@tonic-gate 			 * Call ehci_sendup_qtd_message
8397c478bd9Sstevel@tonic-gate 			 * to send message to upstream.
8407c478bd9Sstevel@tonic-gate 			 */
8417c478bd9Sstevel@tonic-gate 			ehci_sendup_qtd_message(ehcip, pp, tw, qtd, error);
8427c478bd9Sstevel@tonic-gate 
8437c478bd9Sstevel@tonic-gate 			return;
8447c478bd9Sstevel@tonic-gate 		case USB_EP_ATTR_INTR:
8457c478bd9Sstevel@tonic-gate 			curr_intr_reqp =
8467c478bd9Sstevel@tonic-gate 			    (usb_intr_req_t *)tw->tw_curr_xfer_reqp;
8477c478bd9Sstevel@tonic-gate 
8487c478bd9Sstevel@tonic-gate 			if (curr_intr_reqp->intr_attributes &
8497c478bd9Sstevel@tonic-gate 			    USB_ATTRS_ONE_XFER) {
8507c478bd9Sstevel@tonic-gate 
8517c478bd9Sstevel@tonic-gate 				ehci_handle_one_xfer_completion(ehcip, tw);
8527c478bd9Sstevel@tonic-gate 			}
8537c478bd9Sstevel@tonic-gate 
8547c478bd9Sstevel@tonic-gate 			/* Decrement periodic in request count */
8557c478bd9Sstevel@tonic-gate 			pp->pp_cur_periodic_req_cnt--;
8567c478bd9Sstevel@tonic-gate 			break;
8577c478bd9Sstevel@tonic-gate 		case USB_EP_ATTR_ISOCH:
8587c478bd9Sstevel@tonic-gate 			break;
8597c478bd9Sstevel@tonic-gate 		}
8607c478bd9Sstevel@tonic-gate 	}
8617c478bd9Sstevel@tonic-gate 
8627c478bd9Sstevel@tonic-gate 	ehci_hcdi_callback(ph, tw, error);
8637c478bd9Sstevel@tonic-gate 
8647c478bd9Sstevel@tonic-gate 	/* Check anybody is waiting for transfers completion event */
8657c478bd9Sstevel@tonic-gate 	ehci_check_for_transfers_completion(ehcip, pp);
8667c478bd9Sstevel@tonic-gate }
8677c478bd9Sstevel@tonic-gate 
8687c478bd9Sstevel@tonic-gate /*
8697c478bd9Sstevel@tonic-gate  * ehci_cleanup_data_underrun:
8707c478bd9Sstevel@tonic-gate  *
8717c478bd9Sstevel@tonic-gate  * Cleans up resources when a short xfer occurs.  Will only do cleanup if
8727c478bd9Sstevel@tonic-gate  * this pipe supports alternate_qtds.
8737c478bd9Sstevel@tonic-gate  *
8747c478bd9Sstevel@tonic-gate  * NOTE: This function is also called from POLLED MODE.
8757c478bd9Sstevel@tonic-gate  */
8767c478bd9Sstevel@tonic-gate static void
ehci_cleanup_data_underrun(ehci_state_t * ehcip,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd)8777c478bd9Sstevel@tonic-gate ehci_cleanup_data_underrun(
8787c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
8797c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
8807c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd)
8817c478bd9Sstevel@tonic-gate {
8827c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*next_qtd, *temp_qtd;
8837c478bd9Sstevel@tonic-gate 
8847c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
885112116d8Sfb 	    "ehci_cleanup_data_underrun: qtd=0x%p, tw=0x%p",
886112116d8Sfb 	    (void *)qtd, (void *)tw);
8877c478bd9Sstevel@tonic-gate 
8887c478bd9Sstevel@tonic-gate 	/*
8897c478bd9Sstevel@tonic-gate 	 * Check if this transfer doesn't supports short_xfer or
8907c478bd9Sstevel@tonic-gate 	 * if this QTD is the last qtd in the tw.  If so there is
8917c478bd9Sstevel@tonic-gate 	 * no need for cleanup.
8927c478bd9Sstevel@tonic-gate 	 */
8937c478bd9Sstevel@tonic-gate 	if ((tw->tw_alt_qtd == NULL) || (qtd == tw->tw_qtd_tail)) {
8947c478bd9Sstevel@tonic-gate 		/* There is no need for cleanup */
8957c478bd9Sstevel@tonic-gate 		return;
8967c478bd9Sstevel@tonic-gate 	}
8977c478bd9Sstevel@tonic-gate 
8987c478bd9Sstevel@tonic-gate 	/* Start removing all the unused QTDs from the TW */
8997c478bd9Sstevel@tonic-gate 	next_qtd = (ehci_qtd_t *)ehci_qtd_iommu_to_cpu(ehcip,
9007c478bd9Sstevel@tonic-gate 	    Get_QTD(qtd->qtd_tw_next_qtd));
9017c478bd9Sstevel@tonic-gate 
9027c478bd9Sstevel@tonic-gate 	while (next_qtd) {
9037c478bd9Sstevel@tonic-gate 		tw->tw_num_qtds--;
9047c478bd9Sstevel@tonic-gate 
9057c478bd9Sstevel@tonic-gate 		ehci_remove_qtd_from_active_qtd_list(ehcip, next_qtd);
9067c478bd9Sstevel@tonic-gate 
9077c478bd9Sstevel@tonic-gate 		temp_qtd = next_qtd;
9087c478bd9Sstevel@tonic-gate 
9097c478bd9Sstevel@tonic-gate 		next_qtd = ehci_qtd_iommu_to_cpu(ehcip,
9107c478bd9Sstevel@tonic-gate 		    Get_QTD(next_qtd->qtd_tw_next_qtd));
9117c478bd9Sstevel@tonic-gate 
9127c478bd9Sstevel@tonic-gate 		ehci_deallocate_qtd(ehcip, temp_qtd);
9137c478bd9Sstevel@tonic-gate 	}
9147c478bd9Sstevel@tonic-gate 
9157c478bd9Sstevel@tonic-gate 	ASSERT(tw->tw_num_qtds == 1);
9167c478bd9Sstevel@tonic-gate }
9177c478bd9Sstevel@tonic-gate 
9187c478bd9Sstevel@tonic-gate /*
9197c478bd9Sstevel@tonic-gate  * ehci_handle_normal_qtd:
9207c478bd9Sstevel@tonic-gate  */
9217c478bd9Sstevel@tonic-gate static void
ehci_handle_normal_qtd(ehci_state_t * ehcip,ehci_qtd_t * qtd,ehci_trans_wrapper_t * tw)9227c478bd9Sstevel@tonic-gate ehci_handle_normal_qtd(
9237c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
9247c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
9257c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw)
9267c478bd9Sstevel@tonic-gate {
9277c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp;	/* Pipe private field */
9287c478bd9Sstevel@tonic-gate 
9297c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
9307c478bd9Sstevel@tonic-gate 	    "ehci_handle_normal_qtd:");
9317c478bd9Sstevel@tonic-gate 
9327c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
9337c478bd9Sstevel@tonic-gate 	ASSERT(tw != NULL);
9347c478bd9Sstevel@tonic-gate 
9357c478bd9Sstevel@tonic-gate 	/* Obtain the pipe private structure */
9367c478bd9Sstevel@tonic-gate 	pp = tw->tw_pipe_private;
9377c478bd9Sstevel@tonic-gate 
9387c478bd9Sstevel@tonic-gate 	(*tw->tw_handle_qtd)(ehcip, pp, tw,
9397c478bd9Sstevel@tonic-gate 	    qtd, tw->tw_handle_callback_value);
9407c478bd9Sstevel@tonic-gate 
9417c478bd9Sstevel@tonic-gate 	/* Check anybody is waiting for transfers completion event */
9427c478bd9Sstevel@tonic-gate 	ehci_check_for_transfers_completion(ehcip, pp);
9437c478bd9Sstevel@tonic-gate }
9447c478bd9Sstevel@tonic-gate 
9457c478bd9Sstevel@tonic-gate 
9467c478bd9Sstevel@tonic-gate /*
9477c478bd9Sstevel@tonic-gate  * ehci_handle_ctrl_qtd:
9487c478bd9Sstevel@tonic-gate  *
9497c478bd9Sstevel@tonic-gate  * Handle a control Transfer Descriptor (QTD).
9507c478bd9Sstevel@tonic-gate  */
9517c478bd9Sstevel@tonic-gate /* ARGSUSED */
9527c478bd9Sstevel@tonic-gate void
ehci_handle_ctrl_qtd(ehci_state_t * ehcip,ehci_pipe_private_t * pp,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd,void * tw_handle_callback_value)9537c478bd9Sstevel@tonic-gate ehci_handle_ctrl_qtd(
9547c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
9557c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp,
9567c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
9577c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
9587c478bd9Sstevel@tonic-gate 	void			*tw_handle_callback_value)
9597c478bd9Sstevel@tonic-gate {
9607c478bd9Sstevel@tonic-gate 	usba_pipe_handle_data_t	*ph = pp->pp_pipe_handle;
9617c478bd9Sstevel@tonic-gate 
9627c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
9637c478bd9Sstevel@tonic-gate 	    "ehci_handle_ctrl_qtd: pp = 0x%p tw = 0x%p qtd = 0x%p state = 0x%x",
9647c478bd9Sstevel@tonic-gate 	    (void *)pp, (void *)tw, (void *)qtd, Get_QTD(qtd->qtd_ctrl_phase));
9657c478bd9Sstevel@tonic-gate 
9667c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
9677c478bd9Sstevel@tonic-gate 
9687c478bd9Sstevel@tonic-gate 	/*
9697c478bd9Sstevel@tonic-gate 	 * A control transfer consists of three phases:
9707c478bd9Sstevel@tonic-gate 	 *
9717c478bd9Sstevel@tonic-gate 	 * Setup
9727c478bd9Sstevel@tonic-gate 	 * Data (optional)
9737c478bd9Sstevel@tonic-gate 	 * Status
9747c478bd9Sstevel@tonic-gate 	 *
9757c478bd9Sstevel@tonic-gate 	 * There is a QTD per phase. A QTD for a given phase isn't
9767c478bd9Sstevel@tonic-gate 	 * enqueued until the previous phase is finished. EHCI
9777c478bd9Sstevel@tonic-gate 	 * spec allows more than one  control transfer on a pipe
9787c478bd9Sstevel@tonic-gate 	 * within a frame. However, we've found that some devices
9797c478bd9Sstevel@tonic-gate 	 * can't handle this.
9807c478bd9Sstevel@tonic-gate 	 */
9817c478bd9Sstevel@tonic-gate 	tw->tw_num_qtds--;
9827c478bd9Sstevel@tonic-gate 	switch (Get_QTD(qtd->qtd_ctrl_phase)) {
9837c478bd9Sstevel@tonic-gate 	case EHCI_CTRL_SETUP_PHASE:
9847c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
9857c478bd9Sstevel@tonic-gate 		    "Setup complete: pp 0x%p qtd 0x%p",
9867c478bd9Sstevel@tonic-gate 		    (void *)pp, (void *)qtd);
9877c478bd9Sstevel@tonic-gate 
9887c478bd9Sstevel@tonic-gate 		break;
9897c478bd9Sstevel@tonic-gate 	case EHCI_CTRL_DATA_PHASE:
9907c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
9917c478bd9Sstevel@tonic-gate 		    "Data complete: pp 0x%p qtd 0x%p",
9927c478bd9Sstevel@tonic-gate 		    (void *)pp, (void *)qtd);
9937c478bd9Sstevel@tonic-gate 
9947c478bd9Sstevel@tonic-gate 		break;
9957c478bd9Sstevel@tonic-gate 	case EHCI_CTRL_STATUS_PHASE:
99697b92364Ssl 		/*
99797b92364Ssl 		 * On some particular hardware, status phase is seen to
99897b92364Ssl 		 * finish before data phase gets timeouted. Don't handle
99997b92364Ssl 		 * the transfer result here if not all qtds are finished.
100097b92364Ssl 		 * Let the timeout handler handle it.
100197b92364Ssl 		 */
100297b92364Ssl 		if (tw->tw_num_qtds != 0) {
100397b92364Ssl 			USB_DPRINTF_L2(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
100497b92364Ssl 			    "Status complete, but the transfer is not done: "
100597b92364Ssl 			    "tw 0x%p, qtd 0x%p, tw_num_qtd 0x%d",
100697b92364Ssl 			    (void *)tw, (void *)qtd, tw->tw_num_qtds);
100797b92364Ssl 
100897b92364Ssl 			ehci_print_qh(ehcip, pp->pp_qh);
100997b92364Ssl 			ehci_print_qtd(ehcip, qtd);
101097b92364Ssl 
101197b92364Ssl 			break;
101297b92364Ssl 		}
101397b92364Ssl 
10147c478bd9Sstevel@tonic-gate 		if ((tw->tw_length) &&
10157c478bd9Sstevel@tonic-gate 		    (tw->tw_direction == EHCI_QTD_CTRL_IN_PID)) {
10167c478bd9Sstevel@tonic-gate 			/*
10177c478bd9Sstevel@tonic-gate 			 * Call ehci_sendup_qtd_message
10187c478bd9Sstevel@tonic-gate 			 * to send message to upstream.
10197c478bd9Sstevel@tonic-gate 			 */
10207c478bd9Sstevel@tonic-gate 			ehci_sendup_qtd_message(ehcip,
10217c478bd9Sstevel@tonic-gate 			    pp, tw, qtd, USB_CR_OK);
10227c478bd9Sstevel@tonic-gate 		} else {
10237c478bd9Sstevel@tonic-gate 			ehci_hcdi_callback(ph, tw, USB_CR_OK);
10247c478bd9Sstevel@tonic-gate 		}
10257c478bd9Sstevel@tonic-gate 
10267c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
10277c478bd9Sstevel@tonic-gate 		    "Status complete: pp 0x%p qtd 0x%p",
10287c478bd9Sstevel@tonic-gate 		    (void *)pp, (void *)qtd);
10297c478bd9Sstevel@tonic-gate 
10307c478bd9Sstevel@tonic-gate 		break;
10317c478bd9Sstevel@tonic-gate 	}
10327c478bd9Sstevel@tonic-gate }
10337c478bd9Sstevel@tonic-gate 
10347c478bd9Sstevel@tonic-gate 
10357c478bd9Sstevel@tonic-gate /*
10367c478bd9Sstevel@tonic-gate  * ehci_handle_bulk_qtd:
10377c478bd9Sstevel@tonic-gate  *
10387c478bd9Sstevel@tonic-gate  * Handle a bulk Transfer Descriptor (QTD).
10397c478bd9Sstevel@tonic-gate  */
10407c478bd9Sstevel@tonic-gate /* ARGSUSED */
10417c478bd9Sstevel@tonic-gate void
ehci_handle_bulk_qtd(ehci_state_t * ehcip,ehci_pipe_private_t * pp,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd,void * tw_handle_callback_value)10427c478bd9Sstevel@tonic-gate ehci_handle_bulk_qtd(
10437c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
10447c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp,
10457c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
10467c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
10477c478bd9Sstevel@tonic-gate 	void			*tw_handle_callback_value)
10487c478bd9Sstevel@tonic-gate {
10497c478bd9Sstevel@tonic-gate 	usba_pipe_handle_data_t	*ph = pp->pp_pipe_handle;
10507c478bd9Sstevel@tonic-gate 	usb_ep_descr_t		*eptd = &ph->p_ep;
10517c478bd9Sstevel@tonic-gate 
10527c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
10537c478bd9Sstevel@tonic-gate 	    "ehci_handle_bulk_qtd:");
10547c478bd9Sstevel@tonic-gate 
10557c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
10567c478bd9Sstevel@tonic-gate 
10577c478bd9Sstevel@tonic-gate 	/*
10587c478bd9Sstevel@tonic-gate 	 * Decrement the QTDs counter and check whether all the bulk
10597c478bd9Sstevel@tonic-gate 	 * data has been send or received. If QTDs counter reaches
10607c478bd9Sstevel@tonic-gate 	 * zero then inform client driver about completion current
10617c478bd9Sstevel@tonic-gate 	 * bulk request. Other wise wait for completion of other bulk
10627c478bd9Sstevel@tonic-gate 	 * QTDs or transactions on this pipe.
10637c478bd9Sstevel@tonic-gate 	 */
10647c478bd9Sstevel@tonic-gate 	if (--tw->tw_num_qtds != 0) {
10657c478bd9Sstevel@tonic-gate 
10667c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
10677c478bd9Sstevel@tonic-gate 		    "ehci_handle_bulk_qtd: Number of QTDs %d", tw->tw_num_qtds);
10687c478bd9Sstevel@tonic-gate 
10697c478bd9Sstevel@tonic-gate 		return;
10707c478bd9Sstevel@tonic-gate 	}
10717c478bd9Sstevel@tonic-gate 
10727c478bd9Sstevel@tonic-gate 	/*
10737c478bd9Sstevel@tonic-gate 	 * If this is a bulk in pipe, return the data to the client.
10747c478bd9Sstevel@tonic-gate 	 * For a bulk out pipe, there is no need to do anything.
10757c478bd9Sstevel@tonic-gate 	 */
10767c478bd9Sstevel@tonic-gate 	if ((eptd->bEndpointAddress &
10777c478bd9Sstevel@tonic-gate 	    USB_EP_DIR_MASK) == USB_EP_DIR_OUT) {
10787c478bd9Sstevel@tonic-gate 
10797c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
10807c478bd9Sstevel@tonic-gate 		    "ehci_handle_bulk_qtd: Bulk out pipe");
10817c478bd9Sstevel@tonic-gate 
10827c478bd9Sstevel@tonic-gate 		/* Do the callback */
10837c478bd9Sstevel@tonic-gate 		ehci_hcdi_callback(ph, tw, USB_CR_OK);
10847c478bd9Sstevel@tonic-gate 
10857c478bd9Sstevel@tonic-gate 		return;
10867c478bd9Sstevel@tonic-gate 	}
10877c478bd9Sstevel@tonic-gate 
10887c478bd9Sstevel@tonic-gate 	/* Call ehci_sendup_qtd_message to send message to upstream */
10897c478bd9Sstevel@tonic-gate 	ehci_sendup_qtd_message(ehcip, pp, tw, qtd, USB_CR_OK);
10907c478bd9Sstevel@tonic-gate }
10917c478bd9Sstevel@tonic-gate 
10927c478bd9Sstevel@tonic-gate 
10937c478bd9Sstevel@tonic-gate /*
10947c478bd9Sstevel@tonic-gate  * ehci_handle_intr_qtd:
10957c478bd9Sstevel@tonic-gate  *
10967c478bd9Sstevel@tonic-gate  * Handle a interrupt Transfer Descriptor (QTD).
10977c478bd9Sstevel@tonic-gate  */
10987c478bd9Sstevel@tonic-gate /* ARGSUSED */
10997c478bd9Sstevel@tonic-gate void
ehci_handle_intr_qtd(ehci_state_t * ehcip,ehci_pipe_private_t * pp,ehci_trans_wrapper_t * tw,ehci_qtd_t * qtd,void * tw_handle_callback_value)11007c478bd9Sstevel@tonic-gate ehci_handle_intr_qtd(
11017c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
11027c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp,
11037c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw,
11047c478bd9Sstevel@tonic-gate 	ehci_qtd_t		*qtd,
11057c478bd9Sstevel@tonic-gate 	void			*tw_handle_callback_value)
11067c478bd9Sstevel@tonic-gate {
11077c478bd9Sstevel@tonic-gate 	usb_intr_req_t		*curr_intr_reqp =
110897b92364Ssl 	    (usb_intr_req_t *)tw->tw_curr_xfer_reqp;
11097c478bd9Sstevel@tonic-gate 	usba_pipe_handle_data_t	*ph = pp->pp_pipe_handle;
11107c478bd9Sstevel@tonic-gate 	usb_ep_descr_t		*eptd = &ph->p_ep;
11117c478bd9Sstevel@tonic-gate 	usb_req_attrs_t		attrs;
11127c478bd9Sstevel@tonic-gate 	int			error = USB_SUCCESS;
11137c478bd9Sstevel@tonic-gate 
11147c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
11157c478bd9Sstevel@tonic-gate 	    "ehci_handle_intr_qtd:");
11167c478bd9Sstevel@tonic-gate 
11177c478bd9Sstevel@tonic-gate 	ASSERT(mutex_owned(&ehcip->ehci_int_mutex));
11187c478bd9Sstevel@tonic-gate 
11197c478bd9Sstevel@tonic-gate 	/* Get the interrupt xfer attributes */
11207c478bd9Sstevel@tonic-gate 	attrs = curr_intr_reqp->intr_attributes;
11217c478bd9Sstevel@tonic-gate 
11227c478bd9Sstevel@tonic-gate 	/*
11237c478bd9Sstevel@tonic-gate 	 * For a Interrupt OUT pipe, we just callback and we are done
11247c478bd9Sstevel@tonic-gate 	 */
11257c478bd9Sstevel@tonic-gate 	if ((eptd->bEndpointAddress & USB_EP_DIR_MASK) == USB_EP_DIR_OUT) {
11267c478bd9Sstevel@tonic-gate 
11277c478bd9Sstevel@tonic-gate 		USB_DPRINTF_L3(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
11287c478bd9Sstevel@tonic-gate 		    "ehci_handle_intr_qtd: Intr out pipe, intr_reqp=0x%p,"
1129112116d8Sfb 		    "data=0x%p", (void *)curr_intr_reqp,
1130112116d8Sfb 		    (void *)curr_intr_reqp->intr_data);
11317c478bd9Sstevel@tonic-gate 
11327c478bd9Sstevel@tonic-gate 		/* Do the callback */
11337c478bd9Sstevel@tonic-gate 		ehci_hcdi_callback(ph, tw, USB_CR_OK);
11347c478bd9Sstevel@tonic-gate 
11357c478bd9Sstevel@tonic-gate 		return;
11367c478bd9Sstevel@tonic-gate 	}
11377c478bd9Sstevel@tonic-gate 
11387c478bd9Sstevel@tonic-gate 	/* Decrement number of interrupt request count */
11397c478bd9Sstevel@tonic-gate 	pp->pp_cur_periodic_req_cnt--;
11407c478bd9Sstevel@tonic-gate 
11417c478bd9Sstevel@tonic-gate 	/*
11427c478bd9Sstevel@tonic-gate 	 * Check usb flag whether USB_FLAGS_ONE_XFER flag is set
11437c478bd9Sstevel@tonic-gate 	 * and if so, free duplicate request.
11447c478bd9Sstevel@tonic-gate 	 */
11457c478bd9Sstevel@tonic-gate 	if (attrs & USB_ATTRS_ONE_XFER) {
11467c478bd9Sstevel@tonic-gate 		ehci_handle_one_xfer_completion(ehcip, tw);
11477c478bd9Sstevel@tonic-gate 	}
11487c478bd9Sstevel@tonic-gate 
11497c478bd9Sstevel@tonic-gate 	/* Call ehci_sendup_qtd_message to callback into client */
11507c478bd9Sstevel@tonic-gate 	ehci_sendup_qtd_message(ehcip, pp, tw, qtd, USB_CR_OK);
11517c478bd9Sstevel@tonic-gate 
11527c478bd9Sstevel@tonic-gate 	/*
11537c478bd9Sstevel@tonic-gate 	 * If interrupt pipe state is still active, insert next Interrupt
11547c478bd9Sstevel@tonic-gate 	 * request into the Host Controller's Interrupt list.  Otherwise
11557c478bd9Sstevel@tonic-gate 	 * you are done.
11567c478bd9Sstevel@tonic-gate 	 */
11577c478bd9Sstevel@tonic-gate 	if ((pp->pp_state != EHCI_PIPE_STATE_ACTIVE) ||
11587c478bd9Sstevel@tonic-gate 	    (ehci_state_is_operational(ehcip) != USB_SUCCESS)) {
11597c478bd9Sstevel@tonic-gate 
11607c478bd9Sstevel@tonic-gate 		return;
11617c478bd9Sstevel@tonic-gate 	}
11627c478bd9Sstevel@tonic-gate 
11637c478bd9Sstevel@tonic-gate 	if ((error = ehci_allocate_intr_in_resource(ehcip, pp, tw, 0)) ==
11647c478bd9Sstevel@tonic-gate 	    USB_SUCCESS) {
11657c478bd9Sstevel@tonic-gate 		curr_intr_reqp = (usb_intr_req_t *)tw->tw_curr_xfer_reqp;
11667c478bd9Sstevel@tonic-gate 
11677c478bd9Sstevel@tonic-gate 		ASSERT(curr_intr_reqp != NULL);
11687c478bd9Sstevel@tonic-gate 
11697c478bd9Sstevel@tonic-gate 		tw->tw_num_qtds = 1;
11707c478bd9Sstevel@tonic-gate 
11717c478bd9Sstevel@tonic-gate 		if (ehci_allocate_tds_for_tw(ehcip, pp, tw, tw->tw_num_qtds) !=
11727c478bd9Sstevel@tonic-gate 		    USB_SUCCESS) {
11737c478bd9Sstevel@tonic-gate 			ehci_deallocate_intr_in_resource(ehcip, pp, tw);
11747c478bd9Sstevel@tonic-gate 			error = USB_FAILURE;
11757c478bd9Sstevel@tonic-gate 		}
11767c478bd9Sstevel@tonic-gate 	}
11777c478bd9Sstevel@tonic-gate 
11787c478bd9Sstevel@tonic-gate 	if (error != USB_SUCCESS) {
11797c478bd9Sstevel@tonic-gate 		/*
11807c478bd9Sstevel@tonic-gate 		 * Set pipe state to stop polling and error to no
11817c478bd9Sstevel@tonic-gate 		 * resource. Don't insert any more interrupt polling
11827c478bd9Sstevel@tonic-gate 		 * requests.
11837c478bd9Sstevel@tonic-gate 		 */
11847c478bd9Sstevel@tonic-gate 		pp->pp_state = EHCI_PIPE_STATE_STOP_POLLING;
11857c478bd9Sstevel@tonic-gate 		pp->pp_error = USB_CR_NO_RESOURCES;
11867c478bd9Sstevel@tonic-gate 	} else {
11877c478bd9Sstevel@tonic-gate 		ehci_insert_intr_req(ehcip, pp, tw, 0);
11887c478bd9Sstevel@tonic-gate 
11897c478bd9Sstevel@tonic-gate 		/* Increment number of interrupt request count */
11907c478bd9Sstevel@tonic-gate 		pp->pp_cur_periodic_req_cnt++;
11917c478bd9Sstevel@tonic-gate 
11927c478bd9Sstevel@tonic-gate 		ASSERT(pp->pp_cur_periodic_req_cnt ==
11937c478bd9Sstevel@tonic-gate 		    pp->pp_max_periodic_req_cnt);
11947c478bd9Sstevel@tonic-gate 	}
11957c478bd9Sstevel@tonic-gate }
11967c478bd9Sstevel@tonic-gate 
11977c478bd9Sstevel@tonic-gate 
11987c478bd9Sstevel@tonic-gate /*
11997c478bd9Sstevel@tonic-gate  * ehci_handle_one_xfer_completion:
12007c478bd9Sstevel@tonic-gate  */
12017c478bd9Sstevel@tonic-gate static void
ehci_handle_one_xfer_completion(ehci_state_t * ehcip,ehci_trans_wrapper_t * tw)12027c478bd9Sstevel@tonic-gate ehci_handle_one_xfer_completion(
12037c478bd9Sstevel@tonic-gate 	ehci_state_t		*ehcip,
12047c478bd9Sstevel@tonic-gate 	ehci_trans_wrapper_t	*tw)
12057c478bd9Sstevel@tonic-gate {
12067c478bd9Sstevel@tonic-gate 	usba_pipe_handle_data_t	*ph = tw->tw_pipe_private->pp_pipe_handle;
12077c478bd9Sstevel@tonic-gate 	ehci_pipe_private_t	*pp = tw->tw_pipe_private;
12087c478bd9Sstevel@tonic-gate 	usb_intr_req_t		*curr_intr_reqp =
120997b92364Ssl 	    (usb_intr_req_t *)tw->tw_curr_xfer_reqp;
12107c478bd9Sstevel@tonic-gate 
12117c478bd9Sstevel@tonic-gate 	USB_DPRINTF_L4(PRINT_MASK_INTR, ehcip->ehci_log_hdl,
1212112116d8Sfb 	    "ehci_handle_one_xfer_completion: tw = 0x%p", (void *)tw);
1213