5b39541e48
- New metrics handling. Metrics are now kept in the new `struct disk'. Busy time is now stored as a timeval, and transfer count in bytes. - Storage for disklabels is now dynamically allocated, so that the size of the disk structure is not machine-dependent. - Several new functions for attaching and detaching disks, and handling metrics calculation. Old-style instrumentation is still supported in drivers that did it before. However, old-style instrumentation is being deprecated, and will go away once the userland utilities are updated for the new framework. For usage and architectural details, see the forthcoming disk(9) manual page.
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
/* $NetBSD: sdvar.h,v 1.4 1996/01/07 22:02:21 thorpej Exp $ */
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/*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Van Jacobson of Lawrence Berkeley Laboratory.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)sdvar.h 8.1 (Berkeley) 6/10/93
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*/
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struct sd_softc {
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struct hp_device *sc_hd;
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struct disk sc_dkdev;
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char sc_xname[8];
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struct devqueue sc_dq;
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int sc_format_pid; /* process using "format" mode */
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short sc_flags;
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short sc_type; /* drive type */
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short sc_punit; /* physical unit (scsi lun) */
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u_short sc_bshift; /* convert device blocks to DEV_BSIZE blks */
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u_int sc_blks; /* number of blocks on device */
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int sc_blksize; /* device block size in bytes */
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u_int sc_heads; /* number of heads (tracks) */
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u_int sc_cyls; /* number of cylinders */
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u_int sc_wpms; /* average xfer rate in 16 bit wds/sec. */
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};
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/* sc_flags values */
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#define SDF_ALIVE 0x01
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#define SDF_OPENING 0x02
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#define SDF_CLOSING 0x04
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#define SDF_WANTED 0x08
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#define SDF_WLABEL 0x10
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#define SDF_RMEDIA 0x20
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#define SDF_ERROR 0x40
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struct sdstats {
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long sdresets;
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long sdtransfers;
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long sdpartials;
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};
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#define sdunit(x) (minor(x) >> 3)
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#define sdpart(x) (minor(x) & 0x7)
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#define sdpunit(x) ((x) & 7)
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#define sdlabdev(d) (dev_t)(((int)(d)&~7)|2) /* sd?c */
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#define b_cylin b_resid
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#define SDRETRY 2
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