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ldvar.h revision 1.3 
      1 /*	$NetBSD: ldvar.h,v 1.3 2001/01/03 21:01:28 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef	_DEV_LDVAR_H_
     40 #define	_DEV_LDVAR_H_
     41 
     42 struct ld_softc {
     43 	struct	device sc_dv;
     44 	struct	disk sc_dk;
     45 	struct	buf_queue sc_bufq;
     46 #if NRND > 0
     47 	rndsource_element_t	sc_rnd_source;
     48 #endif
     49 	int	sc_queuecnt;
     50 
     51 	/*
     52 	 * The following are filled by hardware specific attachment code.
     53 	 */
     54 	int	sc_flags;			/* control flags */
     55 	int	sc_secperunit;			/* # sectors in total */
     56 	int	sc_ncylinders;			/* # cylinders */
     57 	int	sc_nheads;			/* # heads */
     58 	int	sc_nsectors;			/* # sectors per track */
     59 	int	sc_secsize;			/* sector size in bytes */
     60 	int	sc_maxxfer;			/* max xfer size in bytes */
     61 	int	sc_maxqueuecnt;			/* maximum h/w queue count */
     62 
     63 	int	(*sc_dump)(struct ld_softc *, void *, int, int);
     64 	int	(*sc_flush)(struct ld_softc *);
     65 	int	(*sc_start)(struct ld_softc *, struct buf *);
     66 };
     67 
     68 #define	LDF_ENABLED	0x01		/* device enabled */
     69 #define	LDF_LKHELD	0x02		/* lock held */
     70 #define	LDF_LKWANTED	0x04		/* lock wanted */
     71 #define	LDF_WLABEL	0x08		/* label is writable */
     72 #define	LDF_LABELLING	0x10		/* writing label */
     73 #define	LDF_DRAIN	0x20		/* detach pending */
     74 
     75 void	ldattach(struct ld_softc *);
     76 void	lddetach(struct ld_softc *);
     77 void	lddone(struct ld_softc *, struct buf *);
     78 int	lddrain(struct ld_softc *, int);
     79 
     80 #endif	/* !_DEV_LDVAR_H_ */
     81