NetBSD/sys/dev/ldvar.h

81 lines
3.0 KiB
C

/* $NetBSD: ldvar.h,v 1.32 2017/08/20 15:58:43 mlelstv Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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.
*/
#ifndef _DEV_LDVAR_H_
#define _DEV_LDVAR_H_
#include <sys/mutex.h>
#include <sys/rndsource.h>
#include <dev/dkvar.h> /* for dk_softc */
struct ld_softc {
struct dk_softc sc_dksc;
kmutex_t sc_mutex;
kcondvar_t sc_drain;
int sc_queuecnt; /* current h/w queue depth */
int sc_ncylinders; /* # cylinders */
int sc_nheads; /* # heads */
int sc_nsectors; /* # sectors per track */
uint64_t sc_disksize512;
/*
* The following are filled by hardware specific attachment code.
*/
device_t sc_dv;
int sc_flags; /* control flags */
uint64_t sc_secperunit; /* # sectors in total */
int sc_secsize; /* sector size in bytes */
int sc_maxxfer; /* max xfer size in bytes */
int sc_maxqueuecnt; /* maximum h/w queue depth */
int (*sc_dump)(struct ld_softc *, void *, int, int);
int (*sc_ioctl)(struct ld_softc *, u_long, void *, int32_t, bool);
int (*sc_start)(struct ld_softc *, struct buf *);
int (*sc_discard)(struct ld_softc *, struct buf *);
};
/* sc_flags */
#define LDF_ENABLED 0x001 /* device enabled */
#define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */
#define LDF_NO_RND 0x040 /* do not attach rnd source */
#define LDF_MPSAFE 0x080 /* backend is MPSAFE */
int ldadjqparam(struct ld_softc *, int);
void ldattach(struct ld_softc *, const char *);
int ldbegindetach(struct ld_softc *, int);
void ldenddetach(struct ld_softc *);
void lddone(struct ld_softc *, struct buf *);
void lddiscardend(struct ld_softc *, struct buf *);
#endif /* !_DEV_LDVAR_H_ */