NetBSD/sys/dev/ldvar.h

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/* $NetBSD: ldvar.h,v 1.12 2007/02/09 21:55:26 ad Exp $ */
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/*-
* 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.
* 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.
*/
#ifndef _DEV_LDVAR_H_
#define _DEV_LDVAR_H_
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#include <sys/mutex.h>
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struct ld_softc {
struct device sc_dv;
struct disk sc_dk;
struct bufq_state *sc_bufq;
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kmutex_t sc_mutex;
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#if NRND > 0
rndsource_element_t sc_rnd_source;
#endif
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int sc_queuecnt; /* current h/w queue depth */
int sc_ncylinders; /* # cylinders */
int sc_nheads; /* # heads */
int sc_nsectors; /* # sectors per track */
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/*
* The following are filled by hardware specific attachment code.
*/
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int sc_flags; /* control flags */
uint64_t sc_secperunit; /* # sectors in total */
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int sc_secsize; /* sector size in bytes */
int sc_maxxfer; /* max xfer size in bytes */
int sc_maxqueuecnt; /* maximum h/w queue depth */
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int (*sc_dump)(struct ld_softc *, void *, int, int);
int (*sc_flush)(struct ld_softc *);
int (*sc_start)(struct ld_softc *, struct buf *);
};
#define LDF_ENABLED 0x001 /* device enabled */
#define LDF_WLABEL 0x008 /* label is writable */
#define LDF_LABELLING 0x010 /* writing label */
#define LDF_DRAIN 0x020 /* maxqueuecnt has changed; drain */
#define LDF_DETACH 0x040 /* detach pending */
#define LDF_KLABEL 0x080 /* keep label on close */
#define LDF_VLABEL 0x100 /* label is valid */
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int ldadjqparam(struct ld_softc *, int);
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void ldattach(struct ld_softc *);
int ldbegindetach(struct ld_softc *, int);
void ldenddetach(struct ld_softc *);
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void lddone(struct ld_softc *, struct buf *);
#endif /* !_DEV_LDVAR_H_ */