83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/* $NetBSD: ldvar.h,v 1.35 2021/05/30 11:24:02 riastradh Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_LDVAR_H_
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#define _DEV_LDVAR_H_
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#include <sys/mutex.h>
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#include <sys/rndsource.h>
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#include <dev/dkvar.h> /* for dk_softc */
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struct ld_softc {
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struct dk_softc sc_dksc;
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kmutex_t sc_mutex;
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kcondvar_t sc_drain;
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int sc_queuecnt; /* current h/w queue depth */
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int sc_ncylinders; /* # cylinders */
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int sc_nheads; /* # heads */
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int sc_nsectors; /* # sectors per track */
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uint64_t sc_disksize512;
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/*
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* The following are filled by hardware specific attachment code.
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*/
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device_t sc_dv;
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int sc_flags; /* control flags */
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uint64_t sc_secperunit; /* # sectors in total */
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int sc_secsize; /* sector size in bytes */
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int sc_maxxfer; /* max xfer size in bytes */
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int sc_maxqueuecnt; /* maximum h/w queue depth */
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char *sc_typename; /* inquiry data */
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int (*sc_dump)(struct ld_softc *, void *, int, int);
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int (*sc_ioctl)(struct ld_softc *, u_long, void *, int32_t, bool);
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int (*sc_start)(struct ld_softc *, struct buf *);
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int (*sc_discard)(struct ld_softc *, struct buf *);
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};
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/* sc_flags */
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#define LDF_ENABLED 0x001 /* device enabled */
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#define LDF_UNUSED0 0x020 /* was LDF_DRAIN */
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#define LDF_NO_RND 0x040 /* do not attach rnd source */
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#define LDF_MPSAFE 0x080 /* backend is MPSAFE */
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#define LDF_SUSPEND 0x100 /* disk is suspended until resume */
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int ldadjqparam(struct ld_softc *, int);
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void ldattach(struct ld_softc *, const char *);
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int ldbegindetach(struct ld_softc *, int);
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void ldenddetach(struct ld_softc *);
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void lddone(struct ld_softc *, struct buf *);
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void lddiscardend(struct ld_softc *, struct buf *);
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#endif /* !_DEV_LDVAR_H_ */
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