1001 lines
25 KiB
C
1001 lines
25 KiB
C
/* $NetBSD: sd.c,v 1.74 1995/08/05 23:48:55 mycroft Exp $ */
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/*
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* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
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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 Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Originally written by Julian Elischer (julian@dialix.oz.au)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/buf.h>
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#include <sys/uio.h>
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#include <sys/malloc.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsi_disk.h>
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#include <scsi/scsiconf.h>
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#ifdef DDB
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int Debugger();
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#else /* DDB */
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#define Debugger()
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#endif /* DDB */
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#define SDOUTSTANDING 2
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#define SDRETRIES 4
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#define SDUNIT(dev) DISKUNIT(dev)
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#define SDPART(dev) DISKPART(dev)
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#define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part)
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#define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART))
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struct sd_softc {
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struct device sc_dev;
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struct dkdevice sc_dk;
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int flags;
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#define SDF_LOCKED 0x01
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#define SDF_WANTED 0x02
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#define SDF_WLABEL 0x04 /* label is writable */
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#define SDF_LABELLING 0x08 /* writing label */
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struct scsi_link *sc_link; /* contains our targ, lun, etc. */
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struct disk_parms {
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u_char heads; /* number of heads */
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u_short cyls; /* number of cylinders */
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u_char sectors; /* number of sectors/track */
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int blksize; /* number of bytes/sector */
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u_long disksize; /* total number sectors */
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} params;
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struct buf buf_queue;
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};
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int sdmatch __P((struct device *, void *, void *));
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void sdattach __P((struct device *, struct device *, void *));
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struct cfdriver sdcd = {
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NULL, "sd", sdmatch, sdattach, DV_DISK, sizeof(struct sd_softc)
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};
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void sdgetdisklabel __P((struct sd_softc *));
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int sd_get_parms __P((struct sd_softc *, int));
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void sdstrategy __P((struct buf *));
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void sdstart __P((struct sd_softc *));
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struct dkdriver sddkdriver = { sdstrategy };
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struct scsi_device sd_switch = {
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NULL, /* Use default error handler */
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sdstart, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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};
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struct scsi_inquiry_pattern sd_patterns[] = {
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{T_DIRECT, T_FIXED,
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"", "", ""},
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{T_DIRECT, T_REMOV,
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"", "", ""},
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{T_OPTICAL, T_FIXED,
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"", "", ""},
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{T_OPTICAL, T_REMOV,
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"", "", ""},
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};
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int
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sdmatch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct cfdata *cf = match;
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struct scsibus_attach_args *sa = aux;
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int priority;
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(void)scsi_inqmatch(sa->sa_inqbuf,
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(caddr_t)sd_patterns, sizeof(sd_patterns)/sizeof(sd_patterns[0]),
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sizeof(sd_patterns[0]), &priority);
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return (priority);
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}
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/*
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* The routine called by the low level scsi routine when it discovers
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* a device suitable for this driver.
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*/
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void
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sdattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct sd_softc *sd = (void *)self;
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struct disk_parms *dp = &sd->params;
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struct scsibus_attach_args *sa = aux;
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struct scsi_link *sc_link = sa->sa_sc_link;
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SC_DEBUG(sc_link, SDEV_DB2, ("sdattach: "));
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/*
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* Store information needed to contact our base driver
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*/
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sd->sc_link = sc_link;
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sc_link->device = &sd_switch;
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sc_link->device_softc = sd;
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if (sc_link->openings > SDOUTSTANDING)
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sc_link->openings = SDOUTSTANDING;
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sd->sc_dk.dk_driver = &sddkdriver;
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#if !defined(i386) || defined(NEWCONFIG)
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dk_establish(&sd->sc_dk, &sd->sc_dev);
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#endif
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/*
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* Use the subdriver to request information regarding
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* the drive. We cannot use interrupts yet, so the
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* request must specify this.
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*/
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if (scsi_start(sd->sc_link, SSS_START,
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SCSI_AUTOCONF | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT) ||
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sd_get_parms(sd, SCSI_AUTOCONF) != 0)
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printf(": drive offline\n");
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else
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printf(": %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n",
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dp->disksize / (1048576 / dp->blksize), dp->cyls,
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dp->heads, dp->sectors, dp->blksize);
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}
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/*
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* Wait interruptibly for an exclusive lock.
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*
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* XXX
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* Several drivers do this; it should be abstracted and made MP-safe.
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*/
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int
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sdlock(sd)
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struct sd_softc *sd;
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{
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int error;
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while ((sd->flags & SDF_LOCKED) != 0) {
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sd->flags |= SDF_WANTED;
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if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0)
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return error;
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}
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sd->flags |= SDF_LOCKED;
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return 0;
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}
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/*
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* Unlock and wake up any waiters.
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*/
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void
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sdunlock(sd)
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struct sd_softc *sd;
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{
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sd->flags &= ~SDF_LOCKED;
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if ((sd->flags & SDF_WANTED) != 0) {
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sd->flags &= ~SDF_WANTED;
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wakeup(sd);
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}
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}
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/*
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* open the device. Make sure the partition info is a up-to-date as can be.
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*/
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int
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sdopen(dev, flag, fmt)
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dev_t dev;
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int flag, fmt;
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{
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struct sd_softc *sd;
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struct scsi_link *sc_link;
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int unit, part;
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int error;
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unit = SDUNIT(dev);
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if (unit >= sdcd.cd_ndevs)
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return ENXIO;
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sd = sdcd.cd_devs[unit];
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if (!sd)
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return ENXIO;
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sc_link = sd->sc_link;
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SC_DEBUG(sc_link, SDEV_DB1,
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("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit,
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sdcd.cd_ndevs, part));
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if (error = sdlock(sd))
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return error;
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if (sd->sc_dk.dk_openmask != 0) {
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/*
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* If any partition is open, but the disk has been invalidated,
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* disallow further opens.
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*/
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if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
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error = EIO;
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goto bad3;
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}
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} else {
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/* Check that it is still responding and ok. */
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if (error = scsi_test_unit_ready(sc_link,
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SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_NOT_READY))
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goto bad3;
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/* Start the pack spinning if necessary. */
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if (error = scsi_start(sc_link, SSS_START,
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SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT))
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goto bad3;
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sc_link->flags |= SDEV_OPEN;
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/* Lock the pack in. */
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if (error = scsi_prevent(sc_link, PR_PREVENT,
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SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE))
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goto bad;
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if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
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sc_link->flags |= SDEV_MEDIA_LOADED;
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/* Load the physical device parameters. */
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if (sd_get_parms(sd, 0) != 0) {
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error = ENXIO;
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goto bad2;
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}
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SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
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/* Load the partition info if not already loaded. */
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sdgetdisklabel(sd);
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SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded "));
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}
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}
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part = SDPART(dev);
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/* Check that the partition exists. */
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if (part != RAW_PART &&
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(part >= sd->sc_dk.dk_label.d_npartitions ||
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sd->sc_dk.dk_label.d_partitions[part].p_fstype == FS_UNUSED)) {
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error = ENXIO;
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goto bad;
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}
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/* Insure only one open at a time. */
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switch (fmt) {
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case S_IFCHR:
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sd->sc_dk.dk_copenmask |= (1 << part);
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break;
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case S_IFBLK:
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sd->sc_dk.dk_bopenmask |= (1 << part);
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break;
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}
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sd->sc_dk.dk_openmask = sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask;
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SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
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sdunlock(sd);
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return 0;
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bad2:
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sc_link->flags &= ~SDEV_MEDIA_LOADED;
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bad:
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if (sd->sc_dk.dk_openmask == 0) {
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scsi_prevent(sc_link, PR_ALLOW,
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SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE);
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sc_link->flags &= ~SDEV_OPEN;
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}
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bad3:
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sdunlock(sd);
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return error;
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}
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/*
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* close the device.. only called if we are the LAST occurence of an open
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* device. Convenient now but usually a pain.
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*/
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int
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sdclose(dev, flag, fmt)
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dev_t dev;
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int flag, fmt;
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{
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struct sd_softc *sd = sdcd.cd_devs[SDUNIT(dev)];
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int part = SDPART(dev);
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int error;
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if (error = sdlock(sd))
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return error;
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switch (fmt) {
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case S_IFCHR:
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sd->sc_dk.dk_copenmask &= ~(1 << part);
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break;
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case S_IFBLK:
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sd->sc_dk.dk_bopenmask &= ~(1 << part);
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break;
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}
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sd->sc_dk.dk_openmask = sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask;
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if (sd->sc_dk.dk_openmask == 0) {
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/* XXXX Must wait for I/O to complete! */
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scsi_prevent(sd->sc_link, PR_ALLOW,
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SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY);
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sd->sc_link->flags &= ~SDEV_OPEN;
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}
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sdunlock(sd);
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return 0;
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}
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/*
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* Actually translate the requested transfer into one the physical driver
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* can understand. The transfer is described by a buf and will include
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* only one physical transfer.
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*/
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void
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sdstrategy(bp)
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struct buf *bp;
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{
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struct sd_softc *sd = sdcd.cd_devs[SDUNIT(bp->b_dev)];
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int opri;
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SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdstrategy "));
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SC_DEBUG(sd->sc_link, SDEV_DB1,
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("%d bytes @ blk %d\n", bp->b_bcount, bp->b_blkno));
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/*
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* If the device has been made invalid, error out
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*/
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if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
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bp->b_error = EIO;
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goto bad;
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}
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/*
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* If it's a null transfer, return immediatly
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*/
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if (bp->b_bcount == 0)
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goto done;
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/*
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* Do bounds checking, adjust transfer. if error, process.
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* If end of partition, just return.
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*/
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if (SDPART(bp->b_dev) != RAW_PART &&
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bounds_check_with_label(bp, &sd->sc_dk.dk_label,
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(sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0)
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goto done;
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opri = splbio();
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/*
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* Place it in the queue of disk activities for this disk
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*/
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disksort(&sd->buf_queue, bp);
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/*
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* Tell the device to get going on the transfer if it's
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* not doing anything, otherwise just wait for completion
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*/
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sdstart(sd);
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splx(opri);
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return;
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bad:
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bp->b_flags |= B_ERROR;
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done:
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/*
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* Correctly set the buf to indicate a completed xfer
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*/
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bp->b_resid = bp->b_bcount;
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biodone(bp);
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}
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/*
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* sdstart looks to see if there is a buf waiting for the device
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* and that the device is not already busy. If both are true,
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* It dequeues the buf and creates a scsi command to perform the
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* transfer in the buf. The transfer request will call scsi_done
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* on completion, which will in turn call this routine again
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* so that the next queued transfer is performed.
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* The bufs are queued by the strategy routine (sdstrategy)
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*
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* This routine is also called after other non-queued requests
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* have been made of the scsi driver, to ensure that the queue
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* continues to be drained.
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*
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* must be called at the correct (highish) spl level
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* sdstart() is called at splbio from sdstrategy and scsi_done
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*/
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void
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sdstart(sd)
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register struct sd_softc *sd;
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{
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register struct scsi_link *sc_link = sd->sc_link;
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struct buf *bp = 0;
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struct buf *dp;
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struct scsi_rw_big cmd;
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int blkno, nblks;
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struct partition *p;
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SC_DEBUG(sc_link, SDEV_DB2, ("sdstart "));
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/*
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* Check if the device has room for another command
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*/
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while (sc_link->openings > 0) {
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/*
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* there is excess capacity, but a special waits
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* It'll need the adapter as soon as we clear out of the
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* way and let it run (user level wait).
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*/
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if (sc_link->flags & SDEV_WAITING) {
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sc_link->flags &= ~SDEV_WAITING;
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wakeup((caddr_t)sc_link);
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return;
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}
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/*
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* See if there is a buf with work for us to do..
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*/
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dp = &sd->buf_queue;
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if ((bp = dp->b_actf) == NULL) /* yes, an assign */
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return;
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dp->b_actf = bp->b_actf;
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/*
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* If the device has become invalid, abort all the
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* reads and writes until all files have been closed and
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* re-opened
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*/
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if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
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bp->b_error = EIO;
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bp->b_flags |= B_ERROR;
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biodone(bp);
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continue;
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}
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/*
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* We have a buf, now we should make a command
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*
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* First, translate the block to absolute and put it in terms
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* of the logical blocksize of the device.
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*/
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blkno =
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bp->b_blkno / (sd->sc_dk.dk_label.d_secsize / DEV_BSIZE);
|
|
if (SDPART(bp->b_dev) != RAW_PART) {
|
|
p = &sd->sc_dk.dk_label.d_partitions[SDPART(bp->b_dev)];
|
|
blkno += p->p_offset;
|
|
}
|
|
nblks = howmany(bp->b_bcount, sd->sc_dk.dk_label.d_secsize);
|
|
|
|
/*
|
|
* Fill out the scsi command
|
|
*/
|
|
bzero(&cmd, sizeof(cmd));
|
|
cmd.opcode = (bp->b_flags & B_READ) ? READ_BIG : WRITE_BIG;
|
|
cmd.addr_3 = (blkno >> 24) & 0xff;
|
|
cmd.addr_2 = (blkno >> 16) & 0xff;
|
|
cmd.addr_1 = (blkno >> 8) & 0xff;
|
|
cmd.addr_0 = blkno & 0xff;
|
|
cmd.length2 = (nblks >> 8) & 0xff;
|
|
cmd.length1 = nblks & 0xff;
|
|
|
|
/*
|
|
* Call the routine that chats with the adapter.
|
|
* Note: we cannot sleep as we may be an interrupt
|
|
*/
|
|
if (scsi_scsi_cmd(sc_link, (struct scsi_generic *)&cmd,
|
|
sizeof(cmd), (u_char *)bp->b_data, bp->b_bcount,
|
|
SDRETRIES, 10000, bp, SCSI_NOSLEEP |
|
|
((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT)))
|
|
printf("%s: not queued", sd->sc_dev.dv_xname);
|
|
}
|
|
}
|
|
|
|
u_int
|
|
sdminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
register struct sd_softc *sd = sdcd.cd_devs[SDUNIT(bp->b_dev)];
|
|
|
|
return (sd->sc_link->adapter->scsi_minphys)(bp);
|
|
}
|
|
|
|
int
|
|
sdread(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
|
|
return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio));
|
|
}
|
|
|
|
int
|
|
sdwrite(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
|
|
return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio));
|
|
}
|
|
|
|
/*
|
|
* Perform special action on behalf of the user
|
|
* Knows about the internals of this device
|
|
*/
|
|
int
|
|
sdioctl(dev, cmd, addr, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct sd_softc *sd = sdcd.cd_devs[SDUNIT(dev)];
|
|
int error;
|
|
|
|
SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdioctl 0x%lx ", cmd));
|
|
|
|
/*
|
|
* If the device is not valid.. abandon ship
|
|
*/
|
|
if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0)
|
|
return EIO;
|
|
|
|
switch (cmd) {
|
|
case DIOCGDINFO:
|
|
*(struct disklabel *)addr = sd->sc_dk.dk_label;
|
|
return 0;
|
|
|
|
case DIOCGPART:
|
|
((struct partinfo *)addr)->disklab = &sd->sc_dk.dk_label;
|
|
((struct partinfo *)addr)->part =
|
|
&sd->sc_dk.dk_label.d_partitions[SDPART(dev)];
|
|
return 0;
|
|
|
|
case DIOCWDINFO:
|
|
case DIOCSDINFO:
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
|
|
if (error = sdlock(sd))
|
|
return error;
|
|
sd->flags |= SDF_LABELLING;
|
|
|
|
error = setdisklabel(&sd->sc_dk.dk_label,
|
|
(struct disklabel *)addr, /*sd->sc_dk.dk_openmask : */0,
|
|
&sd->sc_dk.dk_cpulabel);
|
|
if (error == 0) {
|
|
if (cmd == DIOCWDINFO)
|
|
error = writedisklabel(SDLABELDEV(dev),
|
|
sdstrategy, &sd->sc_dk.dk_label,
|
|
&sd->sc_dk.dk_cpulabel);
|
|
}
|
|
|
|
sd->flags &= ~SDF_LABELLING;
|
|
sdunlock(sd);
|
|
return error;
|
|
|
|
case DIOCWLABEL:
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
if (*(int *)addr)
|
|
sd->flags |= SDF_WLABEL;
|
|
else
|
|
sd->flags &= ~SDF_WLABEL;
|
|
return 0;
|
|
|
|
default:
|
|
if (SDPART(dev) != RAW_PART)
|
|
return ENOTTY;
|
|
return scsi_do_ioctl(sd->sc_link, dev, cmd, addr, flag, p);
|
|
}
|
|
|
|
#ifdef DIAGNOSTIC
|
|
panic("sdioctl: impossible");
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Load the label information on the named device
|
|
*/
|
|
void
|
|
sdgetdisklabel(sd)
|
|
struct sd_softc *sd;
|
|
{
|
|
struct disklabel *lp = &sd->sc_dk.dk_label;
|
|
char *errstring;
|
|
|
|
bzero(lp, sizeof(struct disklabel));
|
|
bzero(&sd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel));
|
|
|
|
lp->d_secsize = sd->params.blksize;
|
|
lp->d_ntracks = sd->params.heads;
|
|
lp->d_nsectors = sd->params.sectors;
|
|
lp->d_ncylinders = sd->params.cyls;
|
|
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
|
|
if (lp->d_secpercyl == 0) {
|
|
lp->d_secpercyl = 100;
|
|
/* as long as it's not 0 - readdisklabel divides by it (?) */
|
|
}
|
|
|
|
strncpy(lp->d_typename, "SCSI disk", 16);
|
|
lp->d_type = DTYPE_SCSI;
|
|
strncpy(lp->d_packname, "fictitious", 16);
|
|
lp->d_secperunit = sd->params.disksize;
|
|
lp->d_rpm = 3600;
|
|
lp->d_interleave = 1;
|
|
lp->d_flags = 0;
|
|
|
|
lp->d_partitions[RAW_PART].p_offset = 0;
|
|
lp->d_partitions[RAW_PART].p_size =
|
|
lp->d_secperunit * (lp->d_secsize / DEV_BSIZE);
|
|
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
|
|
lp->d_npartitions = RAW_PART + 1;
|
|
|
|
lp->d_magic = DISKMAGIC;
|
|
lp->d_magic2 = DISKMAGIC;
|
|
lp->d_checksum = dkcksum(lp);
|
|
|
|
/*
|
|
* Call the generic disklabel extraction routine
|
|
*/
|
|
if (errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit,
|
|
RAW_PART), sdstrategy, lp, &sd->sc_dk.dk_cpulabel)) {
|
|
printf("%s: %s\n", sd->sc_dev.dv_xname, errstring);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find out from the device what it's capacity is
|
|
*/
|
|
u_long
|
|
sd_size(sd, flags)
|
|
struct sd_softc *sd;
|
|
int flags;
|
|
{
|
|
struct scsi_read_cap_data rdcap;
|
|
struct scsi_read_capacity scsi_cmd;
|
|
u_long size;
|
|
|
|
/*
|
|
* make up a scsi command and ask the scsi driver to do
|
|
* it for you.
|
|
*/
|
|
bzero(&scsi_cmd, sizeof(scsi_cmd));
|
|
scsi_cmd.opcode = READ_CAPACITY;
|
|
|
|
/*
|
|
* If the command works, interpret the result as a 4 byte
|
|
* number of blocks
|
|
*/
|
|
if (scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd,
|
|
sizeof(scsi_cmd), (u_char *)&rdcap, sizeof(rdcap), SDRETRIES,
|
|
2000, NULL, flags | SCSI_DATA_IN) != 0)
|
|
return 0;
|
|
|
|
size = (rdcap.addr_3 << 24) + (rdcap.addr_2 << 16) +
|
|
(rdcap.addr_1 << 8) + rdcap.addr_0 + 1;
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Tell the device to map out a defective block
|
|
*/
|
|
int
|
|
sd_reassign_blocks(sd, block)
|
|
struct sd_softc *sd;
|
|
u_long block;
|
|
{
|
|
struct scsi_reassign_blocks scsi_cmd;
|
|
struct scsi_reassign_blocks_data rbdata;
|
|
|
|
bzero(&scsi_cmd, sizeof(scsi_cmd));
|
|
bzero(&rbdata, sizeof(rbdata));
|
|
scsi_cmd.opcode = REASSIGN_BLOCKS;
|
|
|
|
rbdata.length_msb = 0;
|
|
rbdata.length_lsb = sizeof(rbdata.defect_descriptor[0]);
|
|
rbdata.defect_descriptor[0].dlbaddr_3 = (block >> 24) & 0xff;
|
|
rbdata.defect_descriptor[0].dlbaddr_2 = (block >> 16) & 0xff;
|
|
rbdata.defect_descriptor[0].dlbaddr_1 = (block >> 8) & 0xff;
|
|
rbdata.defect_descriptor[0].dlbaddr_0 = block & 0xff;
|
|
|
|
return scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd,
|
|
sizeof(scsi_cmd), (u_char *)&rbdata, sizeof(rbdata), SDRETRIES,
|
|
5000, NULL, SCSI_DATA_OUT);
|
|
}
|
|
|
|
#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
|
|
|
|
/*
|
|
* Get the scsi driver to send a full inquiry to the * device and use the
|
|
* results to fill out the disk parameter structure.
|
|
*/
|
|
int
|
|
sd_get_parms(sd, flags)
|
|
struct sd_softc *sd;
|
|
int flags;
|
|
{
|
|
struct disk_parms *dp = &sd->params;
|
|
struct scsi_mode_sense scsi_cmd;
|
|
struct scsi_mode_sense_data {
|
|
struct scsi_mode_header header;
|
|
struct scsi_blk_desc blk_desc;
|
|
union disk_pages pages;
|
|
} scsi_sense;
|
|
u_long sectors;
|
|
|
|
/*
|
|
* do a "mode sense page 4"
|
|
*/
|
|
bzero(&scsi_cmd, sizeof(scsi_cmd));
|
|
scsi_cmd.opcode = MODE_SENSE;
|
|
scsi_cmd.page = 4;
|
|
scsi_cmd.length = 0x20;
|
|
/*
|
|
* If the command worked, use the results to fill out
|
|
* the parameter structure
|
|
*/
|
|
if (scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd,
|
|
sizeof(scsi_cmd), (u_char *)&scsi_sense, sizeof(scsi_sense),
|
|
SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN) != 0) {
|
|
printf("%s: could not mode sense (4)", sd->sc_dev.dv_xname);
|
|
fake_it:
|
|
printf("; using fictitious geometry\n");
|
|
/*
|
|
* use adaptec standard fictitious geometry
|
|
* this depends on which controller (e.g. 1542C is
|
|
* different. but we have to put SOMETHING here..)
|
|
*/
|
|
sectors = sd_size(sd, flags);
|
|
dp->heads = 64;
|
|
dp->sectors = 32;
|
|
dp->cyls = sectors / (64 * 32);
|
|
dp->blksize = 512;
|
|
dp->disksize = sectors;
|
|
} else {
|
|
SC_DEBUG(sd->sc_link, SDEV_DB3,
|
|
("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
|
|
_3btol(&scsi_sense.pages.rigid_geometry.ncyl_2),
|
|
scsi_sense.pages.rigid_geometry.nheads,
|
|
b2tol(scsi_sense.pages.rigid_geometry.st_cyl_wp),
|
|
b2tol(scsi_sense.pages.rigid_geometry.st_cyl_rwc),
|
|
b2tol(scsi_sense.pages.rigid_geometry.land_zone)));
|
|
|
|
/*
|
|
* KLUDGE!! (for zone recorded disks)
|
|
* give a number of sectors so that sec * trks * cyls
|
|
* is <= disk_size
|
|
* can lead to wasted space! THINK ABOUT THIS !
|
|
*/
|
|
dp->heads = scsi_sense.pages.rigid_geometry.nheads;
|
|
dp->cyls =
|
|
_3btol(&scsi_sense.pages.rigid_geometry.ncyl_2);
|
|
dp->blksize = _3btol(scsi_sense.blk_desc.blklen);
|
|
|
|
if (dp->heads == 0 || dp->cyls == 0) {
|
|
printf("%s: mode sense (4) returned nonsense",
|
|
sd->sc_dev.dv_xname);
|
|
goto fake_it;
|
|
}
|
|
|
|
if (dp->blksize == 0)
|
|
dp->blksize = 512;
|
|
|
|
sectors = sd_size(sd, flags);
|
|
dp->disksize = sectors;
|
|
sectors /= (dp->heads * dp->cyls);
|
|
dp->sectors = sectors; /* XXX dubious on SCSI */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
sdsize(dev)
|
|
dev_t dev;
|
|
{
|
|
struct sd_softc *sd;
|
|
int part;
|
|
int size;
|
|
|
|
if (sdopen(dev, 0, S_IFBLK) != 0)
|
|
return -1;
|
|
sd = sdcd.cd_devs[SDUNIT(dev)];
|
|
part = SDPART(dev);
|
|
if (sd->sc_dk.dk_label.d_partitions[part].p_fstype != FS_SWAP)
|
|
size = -1;
|
|
else
|
|
size = sd->sc_dk.dk_label.d_partitions[part].p_size;
|
|
if (sdclose(dev, 0, S_IFBLK) != 0)
|
|
return -1;
|
|
return size;
|
|
}
|
|
|
|
#ifndef __BDEVSW_DUMP_OLD_TYPE
|
|
/* #define SD_DUMP_NOT_TRUSTED if you just want to watch */
|
|
static struct scsi_xfer sx;
|
|
static int sddoingadump;
|
|
|
|
/*
|
|
* dump all of physical memory into the partition specified, starting
|
|
* at offset 'dumplo' into the partition.
|
|
*/
|
|
int
|
|
sddump(dev, blkno, va, size)
|
|
dev_t dev;
|
|
daddr_t blkno;
|
|
caddr_t va;
|
|
size_t size;
|
|
{
|
|
struct sd_softc *sd; /* disk unit to do the I/O */
|
|
struct disklabel *lp; /* disk's disklabel */
|
|
int unit, part;
|
|
int sectorsize; /* size of a disk sector */
|
|
int nsects; /* number of sectors in partition */
|
|
int sectoff; /* sector offset of partition */
|
|
int totwrt; /* total number of sectors left to write */
|
|
int nwrt; /* current number of sectors to write */
|
|
struct scsi_rw_big cmd; /* write command */
|
|
struct scsi_xfer *xs; /* ... convenience */
|
|
int retval;
|
|
|
|
/* Check if recursive dump; if so, punt. */
|
|
if (sddoingadump)
|
|
return EFAULT;
|
|
|
|
/* Mark as active early. */
|
|
sddoingadump = 1;
|
|
|
|
unit = SDUNIT(dev); /* Decompose unit & partition. */
|
|
part = SDPART(dev);
|
|
|
|
/* Check for acceptable drive number. */
|
|
if (unit >= sdcd.cd_ndevs || (sd = sdcd.cd_devs[unit]) == NULL)
|
|
return ENXIO;
|
|
|
|
/* Make sure it was initialized. */
|
|
if (sd->sc_link->flags & SDEV_MEDIA_LOADED != SDEV_MEDIA_LOADED)
|
|
return ENXIO;
|
|
|
|
/* Convert to disk sectors. Request must be a multiple of size. */
|
|
lp = &sd->sc_dk.dk_label;
|
|
sectorsize = lp->d_secsize;
|
|
if ((size % sectorsize) != 0)
|
|
return EFAULT;
|
|
totwrt = size / sectorsize;
|
|
blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */
|
|
|
|
nsects = lp->d_partitions[part].p_size;
|
|
sectoff = lp->d_partitions[part].p_offset;
|
|
|
|
/* Check transfer bounds against partition size. */
|
|
if ((blkno < 0) || ((blkno + totwrt) > nsects))
|
|
return EINVAL;
|
|
|
|
/* Offset block number to start of partition. */
|
|
blkno += sectoff;
|
|
|
|
xs = &sx;
|
|
|
|
while (totwrt > 0) {
|
|
nwrt = totwrt; /* XXX */
|
|
#ifndef SD_DUMP_NOT_TRUSTED
|
|
/*
|
|
* Fill out the scsi command
|
|
*/
|
|
bzero(&cmd, sizeof(cmd));
|
|
cmd.opcode = WRITE_BIG;
|
|
cmd.addr_3 = (blkno >> 24) & 0xff;
|
|
cmd.addr_2 = (blkno >> 16) & 0xff;
|
|
cmd.addr_1 = (blkno >> 8) & 0xff;
|
|
cmd.addr_0 = blkno & 0xff;
|
|
cmd.length2 = (nwrt >> 8) & 0xff;
|
|
cmd.length1 = nwrt & 0xff;
|
|
/*
|
|
* Fill out the scsi_xfer structure
|
|
* Note: we cannot sleep as we may be an interrupt
|
|
* don't use scsi_scsi_cmd() as it may want
|
|
* to wait for an xs.
|
|
*/
|
|
bzero(xs, sizeof(sx));
|
|
xs->flags |= SCSI_AUTOCONF | INUSE;
|
|
xs->sc_link = sd->sc_link;
|
|
xs->retries = SDRETRIES;
|
|
xs->timeout = 10000; /* 10000 millisecs for a disk ! */
|
|
xs->cmd = (struct scsi_generic *)&cmd;
|
|
xs->cmdlen = sizeof(cmd);
|
|
xs->resid = nwrt * sectorsize;
|
|
xs->error = XS_NOERROR;
|
|
xs->bp = 0;
|
|
xs->data = va;
|
|
xs->datalen = nwrt * sectorsize;
|
|
|
|
/*
|
|
* Pass all this info to the scsi driver.
|
|
*/
|
|
retval = (*(sd->sc_link->adapter->scsi_cmd)) (xs);
|
|
if (retval != COMPLETE)
|
|
return ENXIO;
|
|
#else /* SD_DUMP_NOT_TRUSTED */
|
|
/* Let's just talk about this first... */
|
|
printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno);
|
|
delay(500 * 1000); /* half a second */
|
|
#endif /* SD_DUMP_NOT_TRUSTED */
|
|
|
|
/* update block count */
|
|
totwrt -= nwrt;
|
|
blkno += nwrt;
|
|
va += sectorsize * nwrt;
|
|
}
|
|
sddoingadump = 0;
|
|
return 0;
|
|
}
|
|
#else /* __BDEVSW_DUMP_NEW_TYPE */
|
|
int
|
|
sddump(dev, blkno, va, size)
|
|
dev_t dev;
|
|
daddr_t blkno;
|
|
caddr_t va;
|
|
size_t size;
|
|
{
|
|
|
|
/* Not implemented. */
|
|
return ENXIO;
|
|
}
|
|
#endif /* __BDEVSW_DUMP_NEW_TYPE */
|