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sdvar.h revision 1.15 
      1 /*	$NetBSD: sdvar.h,v 1.15 2001/05/23 02:16:19 chs Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum.
      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 /*
     40  * Originally written by Julian Elischer (julian (at) dialix.oz.au)
     41  * for TRW Financial Systems for use under the MACH(2.5) operating system.
     42  *
     43  * TRW Financial Systems, in accordance with their agreement with Carnegie
     44  * Mellon University, makes this software available to CMU to distribute
     45  * or use in any manner that they see fit as long as this message is kept with
     46  * the software. For this reason TFS also grants any other persons or
     47  * organisations permission to use or modify this software.
     48  *
     49  * TFS supplies this software to be publicly redistributed
     50  * on the understanding that TFS is not responsible for the correct
     51  * functioning of this software in any circumstances.
     52  *
     53  * Ported to run under 386BSD by Julian Elischer (julian (at) dialix.oz.au) Sept 1992
     54  */
     55 
     56 #include "opt_scsi.h"
     57 #include "rnd.h"
     58 #if NRND > 0
     59 #include <sys/rnd.h>
     60 #endif
     61 
     62 #ifndef	SDRETRIES
     63 #define	SDRETRIES	4
     64 #endif
     65 
     66 #ifndef	SD_IO_TIMEOUT
     67 #define	SD_IO_TIMEOUT	(60 * 1000)
     68 #endif
     69 
     70 struct sd_ops;
     71 
     72 struct sd_softc {
     73 	struct device sc_dev;
     74 	struct disk sc_dk;
     75 
     76 	int flags;
     77 #define	SDF_LOCKED	0x01
     78 #define	SDF_WANTED	0x02
     79 #define	SDF_WLABEL	0x04		/* label is writable */
     80 #define	SDF_LABELLING	0x08		/* writing label */
     81 #define	SDF_ANCIENT	0x10		/* disk is ancient; for minphys */
     82 #define	SDF_DIRTY	0x20		/* disk is dirty; needs cache flush */
     83 #define	SDF_FLUSHING	0x40		/* flushing, for sddone() */
     84 
     85 	struct scsipi_periph *sc_periph;/* contains our targ, lun, etc. */
     86 
     87 	struct disk_parms {
     88 		u_long	heads;		/* number of heads */
     89 		u_long	cyls;		/* number of cylinders */
     90 		u_long	sectors;	/* number of sectors/track */
     91 		u_long	blksize;	/* number of bytes/sector */
     92 		u_long	disksize;	/* total number sectors */
     93 		u_long	rot_rate;	/* rotational rate, in RPM */
     94 	} params;
     95 
     96 	struct buf_queue buf_queue;
     97 	u_int8_t type;
     98 	char name[16]; /* product name, for default disklabel */
     99 	const struct sd_ops *sc_ops;	/* our bus-dependent ops vector */
    100 
    101 	void *sc_sdhook;		/* our shutdown hook */
    102 
    103 #if NRND > 0
    104 	rndsource_element_t rnd_source;
    105 #endif
    106 };
    107 
    108 struct sd_ops {
    109 	int	(*sdo_get_parms) __P((struct sd_softc *, struct disk_parms *,
    110 		    int));
    111 	int	(*sdo_flush) __P((struct sd_softc *, int));
    112 };
    113 #define	SDGP_RESULT_OK		0	/* paramters obtained */
    114 #define	SDGP_RESULT_OFFLINE	1	/* no media, or otherwise losing */
    115 #define	SDGP_RESULT_UNFORMATTED	2	/* unformatted media (max params) */
    116 
    117 void sdattach __P((struct device *, struct sd_softc *, struct scsipi_periph *,
    118     const struct sd_ops *));
    119 int sdactivate __P((struct device *, enum devact));
    120 int sddetach __P((struct device *, int));
    121