/* $NetBSD: sd.c,v 1.125 1998/01/15 18:59:03 cgd Exp $ */ /* * Copyright (c) 1994, 1995, 1997 Charles M. Hannum. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Charles M. Hannum. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Originally written by Julian Elischer (julian@dialix.oz.au) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 */ #include "rnd.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NRND > 0 #include #endif #include #include #include #include #include #include #include "sd.h" /* NSD_SCSIBUS and NSD_ATAPIBUS come from here */ #ifndef SDOUTSTANDING #define SDOUTSTANDING 4 #endif #define SDUNIT(dev) DISKUNIT(dev) #define SDPART(dev) DISKPART(dev) #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) int sdlock __P((struct sd_softc *)); void sdunlock __P((struct sd_softc *)); void sdminphys __P((struct buf *)); void sdgetdefaultlabel __P((struct sd_softc *, struct disklabel *)); void sdgetdisklabel __P((struct sd_softc *)); void sdstart __P((void *)); void sddone __P((struct scsipi_xfer *)); int sd_reassign_blocks __P((struct sd_softc *, u_long)); extern struct cfdriver sd_cd; struct dkdriver sddkdriver = { sdstrategy }; struct scsipi_device sd_switch = { NULL, /* Use default error handler */ sdstart, /* have a queue, served by this */ NULL, /* have no async handler */ sddone, /* deal with stats at interrupt time */ }; /* * The routine called by the low level scsi routine when it discovers * a device suitable for this driver. */ void sdattach(parent, sd, sc_link, ops) struct device *parent; struct sd_softc *sd; struct scsipi_link *sc_link; const struct sd_ops *ops; { int error, result; struct disk_parms *dp = &sd->params; SC_DEBUG(sc_link, SDEV_DB2, ("sdattach: ")); /* * Store information needed to contact our base driver */ sd->sc_link = sc_link; sd->sc_ops = ops; sc_link->device = &sd_switch; sc_link->device_softc = sd; if (sc_link->openings > SDOUTSTANDING) sc_link->openings = SDOUTSTANDING; /* * Initialize and attach the disk structure. */ sd->sc_dk.dk_driver = &sddkdriver; sd->sc_dk.dk_name = sd->sc_dev.dv_xname; disk_attach(&sd->sc_dk); #if !defined(i386) dk_establish(&sd->sc_dk, &sd->sc_dev); /* XXX */ #endif /* * Use the subdriver to request information regarding * the drive. We cannot use interrupts yet, so the * request must specify this. */ printf("\n"); #if NSD_ATAPIBUS > 0 /* XXX BEGIN HACK ALERT!!! */ if (sc_link->type == BUS_ATAPI) { /* * The ATAPI sense data handling is _TOTALLY_ broken. * In particular, it _never_ does a REQUEST_SENSE to get * sense data! This causes UNIT ATTENTION to be not * cleared properly for some ATAPI devices (e.g. Zip), * which messes up the probe. * * This is the easiest way to get around the problem. * * YUCK! */ (void)scsipi_test_unit_ready(sc_link, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_NOT_READY); } /* XXX END HACK ALERT!!! */ #endif /* NSD_ATAPIBUS > 0 */ if ((sd->sc_link->quirks & SDEV_NOSTARTUNIT) == 0) { error = scsipi_start(sd->sc_link, SSS_START, SCSI_AUTOCONF | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT); } else error = 0; if (error) result = SDGP_RESULT_OFFLINE; else result = (*sd->sc_ops->sdo_get_parms)(sd, &sd->params, SCSI_AUTOCONF); printf("%s: ", sd->sc_dev.dv_xname); switch (result) { case SDGP_RESULT_OK: printf("%ldMB, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %ld sectors", dp->disksize / (1048576 / dp->blksize), dp->cyls, dp->heads, dp->sectors, dp->blksize, dp->disksize); break; case SDGP_RESULT_OFFLINE: printf("drive offline"); break; case SDGP_RESULT_UNFORMATTED: printf("unformatted media"); break; #ifdef DIAGNOSTIC default: panic("sdattach: unknown result from get_parms"); break; #endif } printf("\n"); #if NRND > 0 /* * attach the device into the random source list */ rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, RND_TYPE_DISK); #endif } /* * Wait interruptibly for an exclusive lock. * * XXX * Several drivers do this; it should be abstracted and made MP-safe. */ int sdlock(sd) struct sd_softc *sd; { int error; while ((sd->flags & SDF_LOCKED) != 0) { sd->flags |= SDF_WANTED; if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) return (error); } sd->flags |= SDF_LOCKED; return (0); } /* * Unlock and wake up any waiters. */ void sdunlock(sd) struct sd_softc *sd; { sd->flags &= ~SDF_LOCKED; if ((sd->flags & SDF_WANTED) != 0) { sd->flags &= ~SDF_WANTED; wakeup(sd); } } /* * open the device. Make sure the partition info is a up-to-date as can be. */ int sdopen(dev, flag, fmt, p) dev_t dev; int flag, fmt; struct proc *p; { struct sd_softc *sd; struct scsipi_link *sc_link; int unit, part; int error; unit = SDUNIT(dev); if (unit >= sd_cd.cd_ndevs) return (ENXIO); sd = sd_cd.cd_devs[unit]; if (sd == NULL) return (ENXIO); sc_link = sd->sc_link; SC_DEBUG(sc_link, SDEV_DB1, ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, sd_cd.cd_ndevs, SDPART(dev))); if ((error = sdlock(sd)) != 0) return (error); if (sd->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens. */ if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { error = EIO; goto bad3; } } else { /* Check that it is still responding and ok. */ error = scsipi_test_unit_ready(sc_link, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_NOT_READY); if (error) goto bad3; /* Start the pack spinning if necessary. */ if ((sc_link->quirks & SDEV_NOSTARTUNIT) == 0) { error = scsipi_start(sc_link, SSS_START, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT); if (error) goto bad3; } sc_link->flags |= SDEV_OPEN; /* Lock the pack in. */ error = scsipi_prevent(sc_link, PR_PREVENT, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); if (error) goto bad; if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { sc_link->flags |= SDEV_MEDIA_LOADED; /* * Load the physical device parameters. * * Note that if media is present but unformatted, * we allow the open (so that it can be formatted!). * The drive should refuse real I/O, if the media is * unformatted. */ if ((*sd->sc_ops->sdo_get_parms)(sd, &sd->params, 0) == SDGP_RESULT_OFFLINE) { error = ENXIO; goto bad2; } SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded ")); /* Load the partition info if not already loaded. */ sdgetdisklabel(sd); SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded ")); } } part = SDPART(dev); /* Check that the partition exists. */ if (part != RAW_PART && (part >= sd->sc_dk.dk_label->d_npartitions || sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { error = ENXIO; goto bad; } /* Insure only one open at a time. */ switch (fmt) { case S_IFCHR: sd->sc_dk.dk_copenmask |= (1 << part); break; case S_IFBLK: sd->sc_dk.dk_bopenmask |= (1 << part); break; } sd->sc_dk.dk_openmask = sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); sdunlock(sd); return (0); bad2: sc_link->flags &= ~SDEV_MEDIA_LOADED; bad: if (sd->sc_dk.dk_openmask == 0) { scsipi_prevent(sc_link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); sc_link->flags &= ~SDEV_OPEN; } bad3: sdunlock(sd); return (error); } /* * close the device.. only called if we are the LAST occurence of an open * device. Convenient now but usually a pain. */ int sdclose(dev, flag, fmt, p) dev_t dev; int flag, fmt; struct proc *p; { struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; int part = SDPART(dev); int error; if ((error = sdlock(sd)) != 0) return (error); switch (fmt) { case S_IFCHR: sd->sc_dk.dk_copenmask &= ~(1 << part); break; case S_IFBLK: sd->sc_dk.dk_bopenmask &= ~(1 << part); break; } sd->sc_dk.dk_openmask = sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; if (sd->sc_dk.dk_openmask == 0) { /* XXXX Must wait for I/O to complete! */ scsipi_prevent(sd->sc_link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY); sd->sc_link->flags &= ~(SDEV_OPEN|SDEV_MEDIA_LOADED); } sdunlock(sd); return (0); } /* * Actually translate the requested transfer into one the physical driver * can understand. The transfer is described by a buf and will include * only one physical transfer. */ void sdstrategy(bp) struct buf *bp; { struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; int s; SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdstrategy ")); SC_DEBUG(sd->sc_link, SDEV_DB1, ("%ld bytes @ blk %d\n", bp->b_bcount, bp->b_blkno)); /* * The transfer must be a whole number of blocks. */ if ((bp->b_bcount % sd->sc_dk.dk_label->d_secsize) != 0) { bp->b_error = EINVAL; goto bad; } /* * If the device has been made invalid, error out */ if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) { bp->b_error = EIO; goto bad; } /* * If it's a null transfer, return immediatly */ if (bp->b_bcount == 0) goto done; /* * Do bounds checking, adjust transfer. if error, process. * If end of partition, just return. */ if (SDPART(bp->b_dev) != RAW_PART && bounds_check_with_label(bp, sd->sc_dk.dk_label, (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) goto done; s = splbio(); /* * Place it in the queue of disk activities for this disk */ disksort(&sd->buf_queue, bp); /* * Tell the device to get going on the transfer if it's * not doing anything, otherwise just wait for completion */ sdstart(sd); splx(s); return; bad: bp->b_flags |= B_ERROR; done: /* * Correctly set the buf to indicate a completed xfer */ bp->b_resid = bp->b_bcount; biodone(bp); } /* * sdstart looks to see if there is a buf waiting for the device * and that the device is not already busy. If both are true, * It dequeues the buf and creates a scsi command to perform the * transfer in the buf. The transfer request will call scsipi_done * on completion, which will in turn call this routine again * so that the next queued transfer is performed. * The bufs are queued by the strategy routine (sdstrategy) * * This routine is also called after other non-queued requests * have been made of the scsi driver, to ensure that the queue * continues to be drained. * * must be called at the correct (highish) spl level * sdstart() is called at splbio from sdstrategy and scsipi_done */ void sdstart(v) register void *v; { register struct sd_softc *sd = v; register struct scsipi_link *sc_link = sd->sc_link; struct disklabel *lp = sd->sc_dk.dk_label; struct buf *bp = 0; struct buf *dp; struct scsipi_rw_big cmd_big; #if NSD_SCSIBUS > 0 struct scsi_rw cmd_small; #endif struct scsipi_generic *cmdp; int blkno, nblks, cmdlen, error; struct partition *p; SC_DEBUG(sc_link, SDEV_DB2, ("sdstart ")); /* * Check if the device has room for another command */ while (sc_link->openings > 0) { /* * there is excess capacity, but a special waits * It'll need the adapter as soon as we clear out of the * way and let it run (user level wait). */ if (sc_link->flags & SDEV_WAITING) { sc_link->flags &= ~SDEV_WAITING; wakeup((caddr_t)sc_link); return; } /* * See if there is a buf with work for us to do.. */ dp = &sd->buf_queue; if ((bp = dp->b_actf) == NULL) /* yes, an assign */ return; dp->b_actf = bp->b_actf; /* * If the device has become invalid, abort all the * reads and writes until all files have been closed and * re-opened */ if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { bp->b_error = EIO; bp->b_flags |= B_ERROR; bp->b_resid = bp->b_bcount; biodone(bp); continue; } /* * We have a buf, now we should make a command * * First, translate the block to absolute and put it in terms * of the logical blocksize of the device. */ blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); if (SDPART(bp->b_dev) != RAW_PART) { p = &lp->d_partitions[SDPART(bp->b_dev)]; blkno += p->p_offset; } nblks = howmany(bp->b_bcount, lp->d_secsize); #if NSD_SCSIBUS > 0 /* * Fill out the scsi command. If the transfer will * fit in a "small" cdb, use it. */ if (((blkno & 0x1fffff) == blkno) && ((nblks & 0xff) == nblks) && sc_link->type == BUS_SCSI) { /* * We can fit in a small cdb. */ bzero(&cmd_small, sizeof(cmd_small)); cmd_small.opcode = (bp->b_flags & B_READ) ? SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; _lto3b(blkno, cmd_small.addr); cmd_small.length = nblks & 0xff; cmdlen = sizeof(cmd_small); cmdp = (struct scsipi_generic *)&cmd_small; } else #endif { /* * Need a large cdb. */ bzero(&cmd_big, sizeof(cmd_big)); cmd_big.opcode = (bp->b_flags & B_READ) ? READ_BIG : WRITE_BIG; _lto4b(blkno, cmd_big.addr); _lto2b(nblks, cmd_big.length); cmdlen = sizeof(cmd_big); cmdp = (struct scsipi_generic *)&cmd_big; } /* Instrumentation. */ disk_busy(&sd->sc_dk); /* * Call the routine that chats with the adapter. * Note: we cannot sleep as we may be an interrupt */ error = scsipi_command(sc_link, cmdp, cmdlen, (u_char *)bp->b_data, bp->b_bcount, SDRETRIES, 60000, bp, SCSI_NOSLEEP | ((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT)); if (error) printf("%s: not queued, error %d\n", sd->sc_dev.dv_xname, error); } } void sddone(xs) struct scsipi_xfer *xs; { struct sd_softc *sd = xs->sc_link->device_softc; if (xs->bp != NULL) { disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid); #if NRND > 0 rnd_add_uint32(&sd->rnd_source, xs->bp->b_blkno); #endif } } void sdminphys(bp) struct buf *bp; { struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; long max; /* * If the device is ancient, we want to make sure that * the transfer fits into a 6-byte cdb. * * XXX Note that the SCSI-I spec says that 256-block transfers * are allowed in a 6-byte read/write, and are specified * by settng the "length" to 0. However, we're conservative * here, allowing only 255-block transfers in case an * ancient device gets confused by length == 0. A length of 0 * in a 10-byte read/write actually means 0 blocks. */ if (sd->flags & SDF_ANCIENT) { max = sd->sc_dk.dk_label->d_secsize * 0xff; if (bp->b_bcount > max) bp->b_bcount = max; } (*sd->sc_link->adapter->scsipi_minphys)(bp); } int sdread(dev, uio, ioflag) dev_t dev; struct uio *uio; int ioflag; { return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); } int sdwrite(dev, uio, ioflag) dev_t dev; struct uio *uio; int ioflag; { 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 = sd_cd.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)) != 0) 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); case DIOCLOCK: return (scsipi_prevent(sd->sc_link, (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); case DIOCEJECT: return ((sd->sc_link->flags & SDEV_REMOVABLE) == 0 ? ENOTTY : scsipi_start(sd->sc_link, SSS_STOP|SSS_LOEJ, 0)); case DIOCGDEFLABEL: sdgetdefaultlabel(sd, (struct disklabel *)addr); return (0); default: if (SDPART(dev) != RAW_PART) return (ENOTTY); return (scsipi_do_ioctl(sd->sc_link, dev, cmd, addr, flag, p)); } #ifdef DIAGNOSTIC panic("sdioctl: impossible"); #endif } void sdgetdefaultlabel(sd, lp) struct sd_softc *sd; struct disklabel *lp; { bzero(lp, sizeof(struct 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 (sd->type == T_OPTICAL) strncpy(lp->d_typename, "SCSI optical", 16); else 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 = sd->params.rot_rate; 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); } /* * 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(sd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); sdgetdefaultlabel(sd, lp); if (lp->d_secpercyl == 0) { lp->d_secpercyl = 100; /* as long as it's not 0 - readdisklabel divides by it (?) */ } /* * Call the generic disklabel extraction routine */ errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); if (errstring) { printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); return; } } /* * Tell the device to map out a defective block */ int sd_reassign_blocks(sd, blkno) struct sd_softc *sd; u_long blkno; { struct scsi_reassign_blocks scsipi_cmd; struct scsi_reassign_blocks_data rbdata; bzero(&scsipi_cmd, sizeof(scsipi_cmd)); bzero(&rbdata, sizeof(rbdata)); scsipi_cmd.opcode = SCSI_REASSIGN_BLOCKS; _lto2b(sizeof(rbdata.defect_descriptor[0]), rbdata.length); _lto4b(blkno, rbdata.defect_descriptor[0].dlbaddr); return (scsipi_command(sd->sc_link, (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), (u_char *)&rbdata, sizeof(rbdata), SDRETRIES, 5000, NULL, SCSI_DATA_OUT)); } int sdsize(dev) dev_t dev; { struct sd_softc *sd; int part, unit, omask; int size; unit = SDUNIT(dev); if (unit >= sd_cd.cd_ndevs) return (-1); sd = sd_cd.cd_devs[unit]; if (sd == NULL) return (-1); part = SDPART(dev); omask = sd->sc_dk.dk_openmask & (1 << part); if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) return (-1); 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 * (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) return (-1); return (size); } #ifndef __BDEVSW_DUMP_OLD_TYPE /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ static struct scsipi_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 scsipi_rw_big cmd; /* write command */ struct scsipi_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 >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) return (ENXIO); /* * XXX Can't do this check, since the media might have been * XXX marked `invalid' by successful unmounting of all * XXX filesystems. */ #if 0 /* Make sure it was initialized. */ if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) != SDEV_MEDIA_LOADED) return (ENXIO); #endif /* 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; _lto4b(blkno, cmd.addr); _lto2b(nwrt, cmd.length); /* * Fill out the scsipi_xfer structure * Note: we cannot sleep as we may be an interrupt * don't use scsipi_command() as it may want to wait * for an xs. */ bzero(xs, sizeof(sx)); xs->flags |= SCSI_AUTOCONF | INUSE | SCSI_DATA_OUT; xs->sc_link = sd->sc_link; xs->retries = SDRETRIES; xs->timeout = 10000; /* 10000 millisecs for a disk ! */ xs->cmd = (struct scsipi_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 = scsipi_command_direct(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 */