freebsd-dev/sys/dev/usb/uhcivar.h
Nick Hibma 9bd863570a Save and restore the registers SOF and FRAMENUMBER on suspend. In some
cases the registers are not correctly set on resume.

This solves the problem of USB failing after resuming a machine.

Submitted by:	mike+fbsd@medianstrip.net
PR:		18261
2000-08-07 00:04:53 +00:00

194 lines
6.8 KiB
C

/* $NetBSD: uhcivar.h,v 1.21 2000/01/18 20:11:01 augustss Exp $ */
/* $FreeBSD$ */
/*
* 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.
* 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;
#if defined(__FreeBSD__)
void *ih;
struct resource *io_res;
struct resource *irq_res;
#endif
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;
LIST_HEAD(, uhci_intr_info) sc_intrhead;
/* Info for the root hub interrupt channel. */
int sc_ival; /* time between root hug 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 */
#if defined(__NetBSD__)
void *sc_powerhook; /* cookie from power hook */
void *sc_shutdownhook; /* cookie from shutdown hook */
#endif
device_ptr_t sc_child; /* /dev/usb device */
} uhci_softc_t;
usbd_status uhci_init(uhci_softc_t *);
int uhci_intr(void *);
#if defined(__NetBSD__) || defined(__OpenBSD__)
int uhci_detach(uhci_softc_t *, int);
int uhci_activate(device_ptr_t, enum devact);
#endif
void uhci_shutdown(void *v);
void uhci_power(int state, void *priv);