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/* $OpenBSD: uhcivar.h,v 1.6 2000/03/26 08:39:46 aaron Exp $ */
/* $NetBSD: uhcivar.h,v 1.23 2000/02/22 16:03:44 augustss 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 (augustss@carlstedt.se) 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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, which form the
* starts of the virtual frame list. This also has the advantage that it
* simplifies linking in/out TD/QH 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.
*
* UHCI_VFRAMELIST_COUNT should be a power of 2 and <= UHCI_FRAMELIST_COUNT.
*/
#define UHCI_VFRAMELIST_COUNT 128
typedef struct uhci_soft_qh uhci_soft_qh_t;
typedef struct uhci_soft_td uhci_soft_td_t;
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.
*/
typedef struct uhci_intr_info {
struct uhci_softc *sc;
usbd_xfer_handle xfer;
uhci_soft_td_t *stdstart;
uhci_soft_td_t *stdend;
LIST_ENTRY(uhci_intr_info) list;
#if defined(__FreeBSD__)
struct callout_handle timeout_handle;
#endif /* defined(__FreeBSD__) */
#ifdef DIAGNOSTIC
int isdone;
#endif
} uhci_intr_info_t;
/*
* Extra information that we need for a TD.
*/
struct uhci_soft_td {
uhci_td_t 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 {
uhci_qh_t qh; /* The real QH, must be first */
uhci_soft_qh_t *hlink; /* soft version of qh_hlink */
uhci_soft_td_t *elink; /* soft version of qh_elink */
uhci_physaddr_t physaddr; /* QH's physical address. */
int pos; /* Timeslot position */
uhci_intr_info_t *intr_info; /* Who to call on completion. */
/* XXX should try to shrink with 4 bytes to fit into 32 bytes */
};
/* 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 {
uhci_soft_td_t *htd; /* pointer to dummy TD */
uhci_soft_td_t *etd; /* pointer to last TD */
uhci_soft_qh_t *hqh; /* pointer to dummy QH */
uhci_soft_qh_t *eqh; /* pointer to last QH */
u_int bandwidth; /* max bandwidth used by this frame */
};
typedef struct uhci_softc {
struct usbd_bus sc_bus; /* base device */
bus_space_tag_t iot;
bus_space_handle_t ioh;
uhci_physaddr_t *sc_pframes;
usb_dma_t sc_dma;
struct uhci_vframe sc_vframes[UHCI_VFRAMELIST_COUNT];
uhci_soft_qh_t *sc_ctl_start; /* dummy QH for control */
uhci_soft_qh_t *sc_ctl_end; /* last control QH */
uhci_soft_qh_t *sc_bulk_start; /* dummy QH for bulk */
uhci_soft_qh_t *sc_bulk_end; /* last bulk transfer */
uhci_soft_td_t *sc_freetds; /* TD free list */
uhci_soft_qh_t *sc_freeqhs; /* QH free list */
SIMPLEQ_HEAD(, usbd_xfer) sc_free_xfers; /* free xfers */
u_int8_t sc_addr; /* device address */
u_int8_t sc_conf; /* device configuration */
u_int8_t sc_saved_sof;
u_int16_t sc_saved_frnum;
char sc_isreset;
char sc_suspend;
char sc_dying;
LIST_HEAD(, uhci_intr_info) sc_intrhead;
/* Info for the root hub interrupt channel. */
int sc_ival; /* time between root hub intrs */
usbd_xfer_handle sc_has_timo; /* root hub interrupt transfer */
char sc_vflock; /* for lock virtual frame list */
#define UHCI_HAS_LOCK 1
#define UHCI_WANT_LOCK 2
char sc_vendor[16]; /* vendor string for root hub */
int sc_id_vendor; /* vendor ID for root hub */
void *sc_powerhook; /* cookie from power hook */
void *sc_shutdownhook; /* cookie from shutdown hook */
device_ptr_t sc_child; /* /dev/usb device */
} uhci_softc_t;
usbd_status uhci_init __P((uhci_softc_t *));
int uhci_intr __P((void *));
#if defined(__NetBSD__) || defined(__OpenBSD__)
int uhci_detach __P((uhci_softc_t *, int));
int uhci_activate __P((device_ptr_t, enum devact));
#endif
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