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/* $OpenBSD: uhcivar.h,v 1.29 2014/03/25 20:27:37 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
};
#define UXFER(xfer) ((struct uhci_xfer *)(xfer))
/*
* 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 */
SIMPLEQ_HEAD(, usbd_xfer) sc_free_xfers; /* free xfers */
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". */
int sc_ival; /* time between root hub intrs */
struct usbd_xfer *sc_intr_xfer; /* root hub interrupt transfer */
struct timeout sc_poll_handle;
char sc_vendor[32]; /* vendor string for root hub */
int sc_id_vendor; /* vendor ID for root hub */
struct device *sc_child; /* /dev/usb# device */
};
usbd_status uhci_init(struct uhci_softc *);
usbd_status uhci_run(struct uhci_softc *, int run);
int uhci_intr(void *);
int uhci_detach(struct uhci_softc *, int);
int uhci_activate(struct device *, int);
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