/* $OpenBSD: uhcivar.h,v 1.33 2014/05/18 17:10:27 mpi Exp $ */ /* $NetBSD: uhcivar.h,v 1.36 2002/12/31 00:39:11 augustss Exp $ */ /* $FreeBSD: src/sys/dev/usb/uhcivar.h,v 1.14 1999/11/17 22:33:42 n_hibma Exp $ */ /* * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at * Carlstedt Research & Technology. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * To avoid having 1024 TDs for each isochronous transfer we introduce * a virtual frame list. Every UHCI_VFRAMELIST_COUNT entries in the real * frame list points to a non-active TD. These, in turn, form the * starts of the virtual frame list. This also has the advantage that it * simplifies linking in/out of TDs/QHs in the schedule. * Furthermore, initially each of the inactive TDs point to an inactive * QH that forms the start of the interrupt traffic for that slot. * Each of these QHs point to the same QH that is the start of control * traffic. This QH points at another QH which is the start of the * bulk traffic. * * UHCI_VFRAMELIST_COUNT should be a power of 2 and <= UHCI_FRAMELIST_COUNT. */ #define UHCI_VFRAMELIST_COUNT 128 struct uhci_soft_qh; struct uhci_soft_td; typedef union { struct uhci_soft_qh *sqh; struct uhci_soft_td *std; } uhci_soft_td_qh_t; /* * An interrupt info struct contains the information needed to * execute a requested routine when the controller generates an * interrupt. Since we cannot know which transfer generated * the interrupt all structs are linked together so they can be * searched at interrupt time. */ struct uhci_xfer { struct usbd_xfer xfer; LIST_ENTRY(uhci_xfer) inext; struct uhci_soft_td *stdstart; struct uhci_soft_td *stdend; int curframe; #ifdef DIAGNOSTIC int isdone; #endif }; /* * Extra information that we need for a TD. */ struct uhci_soft_td { struct uhci_td td; /* The real TD, must be first */ uhci_soft_td_qh_t link; /* soft version of the td_link field */ uhci_physaddr_t physaddr; /* TD's physical address. */ }; /* * Make the size such that it is a multiple of UHCI_TD_ALIGN. This way * we can pack a number of soft TD together and have the real TD well * aligned. * NOTE: Minimum size is 32 bytes. */ #define UHCI_STD_SIZE ((sizeof (struct uhci_soft_td) + UHCI_TD_ALIGN - 1) / UHCI_TD_ALIGN * UHCI_TD_ALIGN) #define UHCI_STD_CHUNK 128 /*(PAGE_SIZE / UHCI_TD_SIZE)*/ /* * Extra information that we need for a QH. */ struct uhci_soft_qh { struct uhci_qh qh; /* The real QH, must be first */ struct uhci_soft_qh *hlink; /* soft version of qh_hlink */ struct uhci_soft_td *elink; /* soft version of qh_elink */ uhci_physaddr_t physaddr; /* QH's physical address. */ int pos; /* Timeslot position */ }; /* See comment about UHCI_STD_SIZE. */ #define UHCI_SQH_SIZE ((sizeof (struct uhci_soft_qh) + UHCI_QH_ALIGN - 1) / UHCI_QH_ALIGN * UHCI_QH_ALIGN) #define UHCI_SQH_CHUNK 128 /*(PAGE_SIZE / UHCI_QH_SIZE)*/ /* * Information about an entry in the virtual frame list. */ struct uhci_vframe { struct uhci_soft_td *htd; /* pointer to dummy TD */ struct uhci_soft_td *etd; /* pointer to last TD */ struct uhci_soft_qh *hqh; /* pointer to dummy QH */ struct uhci_soft_qh *eqh; /* pointer to last QH */ u_int bandwidth; /* max bandwidth used by this frame */ }; struct uhci_softc { struct usbd_bus sc_bus; /* base device */ bus_space_tag_t iot; bus_space_handle_t ioh; bus_size_t sc_size; uhci_physaddr_t *sc_pframes; struct usb_dma sc_dma; struct uhci_vframe sc_vframes[UHCI_VFRAMELIST_COUNT]; struct uhci_soft_qh *sc_lctl_start; /* dummy QH for low speed control */ struct uhci_soft_qh *sc_lctl_end; /* last control QH */ struct uhci_soft_qh *sc_hctl_start;/* dummy QH for high speed control */ struct uhci_soft_qh *sc_hctl_end; /* last control QH */ struct uhci_soft_qh *sc_bulk_start; /* dummy QH for bulk */ struct uhci_soft_qh *sc_bulk_end; /* last bulk transfer */ struct uhci_soft_qh *sc_last_qh; /* dummy QH at the end */ u_int32_t sc_loops; /* number of QHs that wants looping */ struct uhci_soft_td *sc_freetds; /* TD free list */ struct uhci_soft_qh *sc_freeqhs; /* QH free list */ u_int8_t sc_conf; /* device configuration */ u_int8_t sc_saved_sof; u_int16_t sc_saved_frnum; char sc_softwake; char sc_isreset; char sc_suspend; LIST_HEAD(, uhci_xfer) sc_intrhead; /* Info for the root hub interrupt "pipe". */ struct usbd_xfer *sc_intrxfer; struct timeout sc_root_intr; char sc_vendor[32]; /* vendor string for root hub */ int sc_id_vendor; /* vendor ID for root hub */ }; usbd_status uhci_init(struct uhci_softc *); usbd_status uhci_run(struct uhci_softc *, int run); int uhci_intr(void *); int uhci_detach(struct device *, int); int uhci_activate(struct device *, int);
