992 lines
25 KiB
C
992 lines
25 KiB
C
/*
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* 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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* $Id: sd.c,v 1.3 1994/01/30 01:21:44 briggs Exp $
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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/dkbad.h>
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#include <sys/systm.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 MAKESDDEV(maj, unit, part) (makedev(maj,(unit<<3)|part))
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#define SDPART(z) (minor(z) & 0x07)
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#define SDUNIT(z) (minor(z) >> 3)
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#define RAW_PART 3
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struct sd_data {
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struct device sc_dev;
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struct dkdevice sc_dk;
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u_int32 flags;
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#define SDINIT 0x04 /* device has been init'd */
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#define SDHAVELABEL 0x10 /* have read the label */
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#define SDDOSPART 0x20 /* Have read the DOS partition table */
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#define SDWRITEPROT 0x40 /* Device in readonly mode (S/W) */
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struct scsi_link *sc_link; /* contains our targ, lun etc. */
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u_int32 ad_info; /* info about the adapter */
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u_int32 cmdscount; /* cmds allowed outstanding by board */
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boolean wlabel; /* label is writable */
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struct disk_parms {
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u_char heads; /* Number of heads */
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u_int16 cyls; /* Number of cylinders */
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u_char sectors; /* Number of sectors/track */
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u_int32 blksize; /* Number of bytes/sector */
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u_long disksize; /* total number sectors */
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} params;
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u_int32 partflags[MAXPARTITIONS]; /* per partition flags */
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#define SDOPEN 0x01
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u_int32 openparts; /* one bit for each open partition */
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u_int32 xfer_block_wait;
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struct buf buf_queue;
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};
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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", scsi_targmatch, sdattach, DV_DISK, sizeof(struct sd_data) };
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int sdgetdisklabel __P((struct sd_data *));
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int sd_get_parms __P((struct sd_data *, int));
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void sdstrategy __P((struct buf *));
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void sdstart __P((int));
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struct dkdriver sddkdriver = { sdstrategy };
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struct scsi_device sd_switch =
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{
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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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"sd",
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0
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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_data *sd = (struct sd_data *)self;
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struct disk_parms *dp = &sd->params;
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struct scsi_link *sc_link = aux;
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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->dev_unit = self->dv_unit;
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sd->sc_dk.dk_driver = &sddkdriver;
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dk_establish(&sd->sc_dk, &sd->sc_dev);
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if (sd->sc_link->adapter->adapter_info) {
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sd->ad_info = ((*(sd->sc_link->adapter->adapter_info)) (sc_link->adapter_softc));
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sd->cmdscount = sd->ad_info & AD_INF_MAX_CMDS;
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if (sd->cmdscount > SDOUTSTANDING)
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sd->cmdscount = SDOUTSTANDING;
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} else {
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sd->ad_info = 1;
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sd->cmdscount = 1;
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}
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sc_link->opennings = sd->cmdscount;
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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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sd_get_parms(sd, SCSI_NOSLEEP | SCSI_NOMASK);
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printf(": %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n",
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dp->disksize / ((1024L * 1024L) / dp->blksize),
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dp->cyls, dp->heads, dp->sectors, dp->blksize);
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sd->flags |= SDINIT;
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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)
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dev_t dev;
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{
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int error = 0;
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int unit, part;
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struct sd_data *sd;
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struct scsi_link *sc_link;
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unit = SDUNIT(dev);
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part = SDPART(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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/*
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* Make sure the disk has been initialised
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* At some point in the future, get the scsi driver
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* to look for a new device if we are not initted
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*/
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if (!sd || !(sd->flags & SDINIT))
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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"
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,dev, unit, sdcd.cd_ndevs, part));
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/*
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* If it's been invalidated, then forget the label
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*/
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if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
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sd->flags &= ~SDHAVELABEL;
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/*
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* If somebody still has it open, then forbid re-entry.
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*/
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if (sd->openparts)
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return ENXIO;
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}
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/*
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* "unit attention" errors should occur here if the
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* drive has been restarted or the pack changed.
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* just ingnore the result, it's a decoy instruction
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* The error code will act on the error though
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* and invalidate any media information we had.
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*/
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scsi_test_unit_ready(sc_link, SCSI_SILENT);
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/*
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* In case it is a funny one, tell it to start
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* not needed for most hard drives (ignore failure)
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*/
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scsi_start_unit(sc_link, SCSI_ERR_OK | SCSI_SILENT);
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/*
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* Check that it is still responding and ok.
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*/
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sc_link->flags |= SDEV_OPEN; /* unit attn becomes an err now */
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if (scsi_test_unit_ready(sc_link, 0)) {
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SC_DEBUG(sc_link, SDEV_DB3, ("device not reponding\n"));
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error = ENXIO;
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goto bad;
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}
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SC_DEBUG(sc_link, SDEV_DB3, ("device ok\n"));
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/* Lock the pack in. */
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scsi_prevent(sc_link, PR_PREVENT, SCSI_ERR_OK | SCSI_SILENT);
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/*
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* Load the physical device parameters
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*/
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if (sd_get_parms(sd, 0)) {
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error = ENXIO;
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goto bad;
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}
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SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
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/*
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* Load the partition info if not already loaded.
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*/
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if ((error = sdgetdisklabel(sd)) && (part != RAW_PART))
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goto bad;
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SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded "));
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/*
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* Check the partition is legal
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*/
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if (part >= sd->sc_dk.dk_label.d_npartitions &&
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part != RAW_PART) {
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error = ENXIO;
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goto bad;
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}
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SC_DEBUG(sc_link, SDEV_DB3, ("partition ok"));
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/*
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* Check that the partition exists
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*/
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if (sd->sc_dk.dk_label.d_partitions[part].p_fstype == FS_UNUSED &&
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part != RAW_PART) {
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error = ENXIO;
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goto bad;
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}
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sd->partflags[part] |= SDOPEN;
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sd->openparts |= (1 << part);
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SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
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sc_link->flags |= SDEV_MEDIA_LOADED;
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return 0;
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bad:
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if (!sd->openparts) {
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scsi_prevent(sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
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sc_link->flags &= ~SDEV_OPEN;
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}
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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)
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dev_t dev;
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{
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int unit, part;
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struct sd_data *sd;
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unit = SDUNIT(dev);
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part = SDPART(dev);
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sd = sdcd.cd_devs[unit];
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sd->partflags[part] &= ~SDOPEN;
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sd->openparts &= ~(1 << part);
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if (!sd->openparts) {
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scsi_prevent(sd->sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
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sd->sc_link->flags &= ~SDEV_OPEN;
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}
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return 0;
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}
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/*
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* trim the size of the transfer if needed, called by physio
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* basically the smaller of our max and the scsi driver's
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* minphys (note we have no max)
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*
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* Trim buffer length if buffer-size is bigger than page size
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*/
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void
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sdminphys(bp)
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struct buf *bp;
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{
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register struct sd_data *sd = sdcd.cd_devs[SDUNIT(bp->b_dev)];
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(sd->sc_link->adapter->scsi_minphys) (bp);
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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 buf *dp;
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int opri;
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struct sd_data *sd;
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int unit;
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unit = SDUNIT(bp->b_dev);
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sd = sdcd.cd_devs[unit];
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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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sdminphys(bp);
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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)) {
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sd->flags &= ~SDHAVELABEL;
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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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* "soft" write protect check
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*/
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if ((sd->flags & SDWRITEPROT) && (bp->b_flags & B_READ) == 0) {
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bp->b_error = EROFS;
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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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* Decide which unit and partition we are talking about
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* only raw is ok if no label
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*/
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if (SDPART(bp->b_dev) != RAW_PART) {
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if (!(sd->flags & SDHAVELABEL)) {
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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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* 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 (bounds_check_with_label(bp, &sd->sc_dk.dk_label, sd->wlabel) <= 0)
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goto done;
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/* otherwise, process transfer request */
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}
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opri = splbio();
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dp = &sd->buf_queue;
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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(dp, 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(unit);
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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(unit)
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int unit;
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{
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register struct sd_data *sd = sdcd.cd_devs[unit];
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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%d ", unit));
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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->opennings) {
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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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return;
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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->av_forw;
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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-openned
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*/
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if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
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sd->flags &= ~SDHAVELABEL;
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goto bad;
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}
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/*
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* We have a buf, now we know we are going to go through
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* With this thing..
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*
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* First, translate the block to absolute
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*/
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blkno = bp->b_blkno / (sd->params.blksize / DEV_BSIZE);
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if (SDPART(bp->b_dev) != RAW_PART) {
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p = &sd->sc_dk.dk_label.d_partitions[SDPART(bp->b_dev)];
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blkno += p->p_offset;
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}
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nblks = (bp->b_bcount + (sd->params.blksize - 1)) / (sd->params.blksize);
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/*
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* Fill out the scsi command
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*/
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bzero(&cmd, sizeof(cmd));
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cmd.op_code = (bp->b_flags & B_READ) ? READ_BIG : WRITE_BIG;
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cmd.addr_3 = (blkno & 0xff000000) >> 24;
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cmd.addr_2 = (blkno & 0xff0000) >> 16;
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cmd.addr_1 = (blkno & 0xff00) >> 8;
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cmd.addr_0 = blkno & 0xff;
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cmd.length2 = (nblks & 0xff00) >> 8;
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cmd.length1 = (nblks & 0xff);
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/*
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* Call the routine that chats with the adapter.
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* Note: we cannot sleep as we may be an interrupt
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*/
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if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
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sizeof(cmd), (u_char *) bp->b_un.b_addr,
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bp->b_bcount, SDRETRIES, 10000, bp,
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SCSI_NOSLEEP | ((bp->b_flags & B_READ) ?
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SCSI_DATA_IN : SCSI_DATA_OUT))
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!= SUCCESSFULLY_QUEUED) {
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bad:
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printf("%s: not queued", sd->sc_dev.dv_xname);
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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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}
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}
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}
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/*
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* Perform special action on behalf of the user
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* Knows about the internals of this device
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*/
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int
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sdioctl(dev, cmd, addr, flag)
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dev_t dev;
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int cmd;
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caddr_t addr;
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int flag;
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{
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int error = 0;
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int unit, part;
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register struct sd_data *sd;
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/*
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* Find the device that the user is talking about
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*/
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unit = SDUNIT(dev);
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part = SDPART(dev);
|
|
sd = sdcd.cd_devs[unit];
|
|
SC_DEBUG(sd->sc_link, SDEV_DB1, ("sdioctl (0x%x)", cmd));
|
|
|
|
/*
|
|
* If the device is not valid.. abandon ship
|
|
*/
|
|
if (!(sd->sc_link->flags & SDEV_MEDIA_LOADED))
|
|
return EIO;
|
|
switch (cmd) {
|
|
|
|
case DIOCSBAD:
|
|
return EINVAL;
|
|
|
|
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 DIOCSDINFO:
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
error = setdisklabel(&sd->sc_dk.dk_label,
|
|
(struct disklabel *)addr,
|
|
/*(sd->flags & DKFL_BSDLABEL) ? sd->openparts : */ 0,
|
|
&sd->sc_dk.dk_cpulabel);
|
|
if (!error)
|
|
sd->flags |= SDHAVELABEL;
|
|
return error;
|
|
|
|
case DIOCWLABEL:
|
|
sd->flags &= ~SDWRITEPROT;
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
sd->wlabel = *(boolean *) addr;
|
|
return 0;
|
|
|
|
case DIOCWDINFO:
|
|
sd->flags &= ~SDWRITEPROT;
|
|
if ((flag & FWRITE) == 0)
|
|
return EBADF;
|
|
error = setdisklabel(&sd->sc_dk.dk_label,
|
|
(struct disklabel *)addr,
|
|
/*(sd->flags & SDHAVELABEL) ? sd->openparts : */ 0,
|
|
&sd->sc_dk.dk_cpulabel);
|
|
if (error)
|
|
return error;
|
|
|
|
{
|
|
boolean wlab;
|
|
|
|
/* ok - write will succeed */
|
|
sd->flags |= SDHAVELABEL;
|
|
|
|
/* simulate opening partition 0 so write succeeds */
|
|
sd->openparts |= (1 << 0); /* XXX */
|
|
wlab = sd->wlabel;
|
|
sd->wlabel = 1;
|
|
error = writedisklabel(dev, sdstrategy,
|
|
&sd->sc_dk.dk_label,
|
|
&sd->sc_dk.dk_cpulabel);
|
|
sd->wlabel = wlab;
|
|
return error;
|
|
}
|
|
|
|
default:
|
|
if (part != RAW_PART)
|
|
return ENOTTY;
|
|
return scsi_do_ioctl(sd->sc_link, cmd, addr, flag);
|
|
}
|
|
#ifdef DIAGNOSTIC
|
|
panic("sdioctl: impossible");
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Load the label information on the named device
|
|
*/
|
|
int
|
|
sdgetdisklabel(sd)
|
|
struct sd_data *sd;
|
|
{
|
|
char *errstring;
|
|
|
|
/*
|
|
* If the inflo is already loaded, use it
|
|
*/
|
|
if (sd->flags & SDHAVELABEL)
|
|
return 0;
|
|
|
|
bzero(&sd->sc_dk.dk_label, sizeof(struct disklabel));
|
|
bzero(&sd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel));
|
|
/*
|
|
* make partition 3 the whole disk in case of failure then get pdinfo
|
|
* for historical reasons, make part a same as raw part
|
|
*/
|
|
sd->sc_dk.dk_label.d_partitions[0].p_offset = 0;
|
|
sd->sc_dk.dk_label.d_partitions[0].p_size
|
|
= sd->params.disksize * (sd->params.blksize / DEV_BSIZE);
|
|
sd->sc_dk.dk_label.d_partitions[0].p_fstype = 9; /* XXXX */
|
|
sd->sc_dk.dk_label.d_partitions[RAW_PART].p_offset = 0;
|
|
sd->sc_dk.dk_label.d_partitions[RAW_PART].p_size
|
|
= sd->params.disksize * (sd->params.blksize / DEV_BSIZE);
|
|
sd->sc_dk.dk_label.d_npartitions = MAXPARTITIONS;
|
|
|
|
sd->sc_dk.dk_label.d_secsize = sd->params.blksize;
|
|
sd->sc_dk.dk_label.d_ntracks = sd->params.heads;
|
|
sd->sc_dk.dk_label.d_nsectors = sd->params.sectors;
|
|
sd->sc_dk.dk_label.d_ncylinders = sd->params.cyls;
|
|
sd->sc_dk.dk_label.d_secpercyl = sd->params.heads * sd->params.sectors;
|
|
if (sd->sc_dk.dk_label.d_secpercyl == 0) {
|
|
sd->sc_dk.dk_label.d_secpercyl = 100;
|
|
/* as long as it's not 0 - readdisklabel divides by it (?) */
|
|
}
|
|
|
|
/*
|
|
* Call the generic disklabel extraction routine
|
|
*/
|
|
if (errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit,
|
|
RAW_PART), sdstrategy,
|
|
&sd->sc_dk.dk_label,
|
|
&sd->sc_dk.dk_cpulabel)) {
|
|
printf("%s: %s\n", sd->sc_dev.dv_xname, errstring);
|
|
return ENXIO;
|
|
}
|
|
sd->flags |= SDHAVELABEL; /* WE HAVE IT ALL NOW */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Find out from the device what it's capacity is
|
|
*/
|
|
u_int32
|
|
sd_size(sd, flags)
|
|
struct sd_data *sd;
|
|
int flags;
|
|
{
|
|
struct scsi_read_cap_data rdcap;
|
|
struct scsi_read_capacity scsi_cmd;
|
|
u_int32 size;
|
|
|
|
/*
|
|
* make up a scsi command and ask the scsi driver to do
|
|
* it for you.
|
|
*/
|
|
bzero(&scsi_cmd, sizeof(scsi_cmd));
|
|
scsi_cmd.op_code = 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) {
|
|
printf("%s: could not get size\n", sd->sc_dev.dv_xname);
|
|
return 0;
|
|
} else {
|
|
size = rdcap.addr_0 + 1;
|
|
size += rdcap.addr_1 << 8;
|
|
size += rdcap.addr_2 << 16;
|
|
size += rdcap.addr_3 << 24;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Tell the device to map out a defective block
|
|
*/
|
|
int
|
|
sd_reassign_blocks(sd, block)
|
|
struct sd_data *sd;
|
|
int 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.op_code = 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_data *sd;
|
|
int flags;
|
|
{
|
|
struct disk_parms *disk_parms = &sd->params;
|
|
struct scsi_mode_sense scsi_cmd;
|
|
struct scsi_mode_sense_data {
|
|
struct scsi_mode_header header;
|
|
struct blk_desc blk_desc;
|
|
union disk_pages pages;
|
|
} scsi_sense;
|
|
u_int32 sectors;
|
|
|
|
/*
|
|
* First check if we have it all loaded
|
|
*/
|
|
if (sd->sc_link->flags & SDEV_MEDIA_LOADED)
|
|
return 0;
|
|
|
|
/*
|
|
* do a "mode sense page 4"
|
|
*/
|
|
bzero(&scsi_cmd, sizeof(scsi_cmd));
|
|
scsi_cmd.op_code = 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, 2000, NULL,
|
|
flags | SCSI_DATA_IN) != 0) {
|
|
|
|
printf("%s: could not mode sense", sd->sc_dev.dv_xname);
|
|
printf(" (4); using ficticious geometry\n");
|
|
/*
|
|
* use adaptec standard ficticious geometry
|
|
* this depends on which controller (e.g. 1542C is
|
|
* different. but we have to put SOMETHING here..)
|
|
*/
|
|
sectors = sd_size(sd, flags);
|
|
disk_parms->heads = 64;
|
|
disk_parms->sectors = 32;
|
|
disk_parms->cyls = sectors / (64 * 32);
|
|
disk_parms->blksize = 512;
|
|
disk_parms->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 !
|
|
*/
|
|
disk_parms->heads = scsi_sense.pages.rigid_geometry.nheads;
|
|
disk_parms->cyls = _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2);
|
|
disk_parms->blksize = _3btol(scsi_sense.blk_desc.blklen);
|
|
|
|
sectors = sd_size(sd, flags);
|
|
disk_parms->disksize = sectors;
|
|
sectors /= (disk_parms->heads * disk_parms->cyls);
|
|
disk_parms->sectors = sectors; /* dubious on SCSI *//*XXX */
|
|
}
|
|
sd->sc_link->flags |= SDEV_MEDIA_LOADED;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
sdsize(dev_t dev)
|
|
{
|
|
int unit = SDUNIT(dev), part = SDPART(dev), val;
|
|
struct sd_data *sd;
|
|
|
|
if (unit >= sdcd.cd_ndevs)
|
|
return -1;
|
|
sd = sdcd.cd_devs[unit];
|
|
if (!sd || !(sd->flags & SDINIT))
|
|
return -1;
|
|
|
|
if ((sd->flags & SDHAVELABEL) == 0) {
|
|
val = sdopen(MAKESDDEV(major(dev), unit, RAW_PART), FREAD, S_IFBLK, 0);
|
|
if (val != 0)
|
|
return -1;
|
|
}
|
|
if (sd->flags & SDWRITEPROT)
|
|
return -1;
|
|
return sd->sc_dk.dk_label.d_partitions[part].p_size;
|
|
}
|
|
|
|
|
|
#define SCSIDUMP 1
|
|
#undef SCSIDUMP
|
|
#define NOT_TRUSTED 1
|
|
|
|
#ifdef SCSIDUMP
|
|
#include <vm/vm.h>
|
|
|
|
static struct scsi_xfer sx;
|
|
#define MAXTRANSFER 8 /* 1 page at a time */
|
|
|
|
/*
|
|
* dump all of physical memory into the partition specified, starting
|
|
* at offset 'dumplo' into the partition.
|
|
*/
|
|
int
|
|
sddump(dev_t dev)
|
|
{ /* dump core after a system crash */
|
|
register struct sd_data *sd; /* disk unit to do the IO */
|
|
int32 num; /* number of sectors to write */
|
|
u_int32 unit, part;
|
|
int32 blkoff, blknum, blkcnt = MAXTRANSFER;
|
|
int32 nblocks;
|
|
char *addr;
|
|
struct scsi_rw_big cmd;
|
|
extern int Maxmem;
|
|
static int sddoingadump = 0;
|
|
#define MAPTO CADDR1
|
|
extern caddr_t MAPTO; /* map the page we are about to write, here */
|
|
struct scsi_xfer *xs = &sx;
|
|
int retval;
|
|
int c;
|
|
|
|
addr = (char *) 0; /* starting address */
|
|
|
|
/* toss any characters present prior to dump */
|
|
while ((c = sgetc(1)) && (c != 0x100)); /*syscons and pccons differ */
|
|
|
|
/* size of memory to dump */
|
|
num = Maxmem;
|
|
unit = SDUNIT(dev); /* eventually support floppies? */
|
|
part = SDPART(dev); /* file system */
|
|
/* check for acceptable drive number */
|
|
if (unit >= sdcd.cd_ndevs)
|
|
return ENXIO;
|
|
|
|
sd = sd_data[unit];
|
|
if (!sd)
|
|
return ENXIO;
|
|
/* was it ever initialized etc. ? */
|
|
if (!(sd->flags & SDINIT))
|
|
return ENXIO;
|
|
if (sd->sc_link->flags & SDEV_MEDIA_LOADED != SDEV_MEDIA_LOADED)
|
|
return ENXIO;
|
|
if (sd->flags & SDWRITEPROT)
|
|
return ENXIO;
|
|
|
|
/* Convert to disk sectors */
|
|
num = (u_int32) num * NBPG / sd->sc_dk.dk_label.d_secsize;
|
|
|
|
/* check if controller active */
|
|
if (sddoingadump)
|
|
return EFAULT;
|
|
|
|
nblocks = sd->sc_dk.dk_label.d_partitions[part].p_size;
|
|
blkoff = sd->sc_dk.dk_label.d_partitions[part].p_offset;
|
|
|
|
/* check transfer bounds against partition size */
|
|
if ((dumplo < 0) || ((dumplo + num) > nblocks))
|
|
return EINVAL;
|
|
|
|
sddoingadump = 1;
|
|
|
|
blknum = dumplo + blkoff;
|
|
/* blkcnt = initialise_me; */
|
|
while (num > 0) {
|
|
pmap_enter(kernel_pmap,
|
|
MAPTO,
|
|
trunc_page(addr),
|
|
VM_PROT_READ,
|
|
TRUE);
|
|
#ifndef NOT_TRUSTED
|
|
/*
|
|
* Fill out the scsi command
|
|
*/
|
|
bzero(&cmd, sizeof(cmd));
|
|
cmd.op_code = WRITE_BIG;
|
|
cmd.addr_3 = (blknum & 0xff000000) >> 24;
|
|
cmd.addr_2 = (blknum & 0xff0000) >> 16;
|
|
cmd.addr_1 = (blknum & 0xff00) >> 8;
|
|
cmd.addr_0 = blknum & 0xff;
|
|
cmd.length2 = (blkcnt & 0xff00) >> 8;
|
|
cmd.length1 = (blkcnt & 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_NOMASK | SCSI_NOSLEEP | 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 = blkcnt * 512;
|
|
xs->error = XS_NOERROR;
|
|
xs->bp = 0;
|
|
xs->data = (u_char *) MAPTO;
|
|
xs->datalen = blkcnt * 512;
|
|
|
|
/*
|
|
* Pass all this info to the scsi driver.
|
|
*/
|
|
retval = (*(sd->sc_link->adapter->scsi_cmd)) (xs);
|
|
switch (retval) {
|
|
case SUCCESSFULLY_QUEUED:
|
|
case HAD_ERROR:
|
|
return ENXIO; /* we said not to sleep! */
|
|
case COMPLETE:
|
|
break;
|
|
default:
|
|
return ENXIO; /* we said not to sleep! */
|
|
}
|
|
#else /* NOT_TRUSTED */
|
|
/* lets just talk about this first... */
|
|
printf("sd%d: dump addr 0x%x, blk %d\n", unit, addr, blknum);
|
|
#endif /* NOT_TRUSTED */
|
|
|
|
if ((unsigned) addr % (1024 * 1024) == 0)
|
|
printf("%d ", num / 2048);
|
|
/* update block count */
|
|
num -= blkcnt;
|
|
blknum += blkcnt;
|
|
(int) addr += 512 * blkcnt;
|
|
|
|
/* operator aborting dump? */
|
|
if ((c = sgetc(1)) && (c != 0x100))
|
|
return EINTR;
|
|
}
|
|
return 0;
|
|
}
|
|
#else /* SCSIDUMP */
|
|
int
|
|
sddump()
|
|
{
|
|
printf("\nsddump() -- not implemented\n");
|
|
DELAY(60000000); /* 60 seconds */
|
|
return -1;
|
|
}
|
|
#endif /* SCSIDUMP */
|
|
|
|
extern int
|
|
sd_target_to_unit(target)
|
|
int target;
|
|
{
|
|
struct sd_data *sd;
|
|
int unit;
|
|
|
|
for (unit = 0 ; unit < sdcd.cd_ndevs ; unit++) {
|
|
sd = sdcd.cd_devs[unit];
|
|
if (sd->sc_link->target == target)
|
|
return sd->sc_link->dev_unit;
|
|
}
|
|
return -1;
|
|
}
|
|
|