/* $OpenBSD: sd.c,v 1.51 2001/10/08 01:50:48 drahn Exp $ */ /* $NetBSD: sd.c,v 1.111 1997/04/02 02:29:41 mycroft Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for BBSIZE and SBSIZE */ #include #define SDUNIT(dev) DISKUNIT(dev) #define SDMINOR(unit, part) DISKMINOR(unit, part) #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 sdmatch __P((struct device *, void *, void *)); void sdattach __P((struct device *, struct device *, void *)); int sdactivate __P((struct device *, enum devact)); int sddetach __P((struct device *, int)); void sdzeroref __P((struct device *)); void sdminphys __P((struct buf *)); void sdgetdisklabel __P((dev_t, struct sd_softc *, struct disklabel *, struct cpu_disklabel *, int)); void sdstart __P((void *)); void sddone __P((struct scsi_xfer *)); void sd_shutdown __P((void *)); int sd_reassign_blocks __P((struct sd_softc *, u_long)); int sd_interpret_sense __P((struct scsi_xfer *)); void viscpy __P((u_char *, u_char *, int)); struct cfattach sd_ca = { sizeof(struct sd_softc), sdmatch, sdattach, sddetach, sdactivate, sdzeroref }; struct cfdriver sd_cd = { NULL, "sd", DV_DISK }; struct dkdriver sddkdriver = { sdstrategy }; struct scsi_device sd_switch = { sd_interpret_sense, /* check out error handler first */ sdstart, /* have a queue, served by this */ NULL, /* have no async handler */ sddone, /* deal with stats at interrupt time */ }; struct scsi_inquiry_pattern sd_patterns[] = { {T_DIRECT, T_FIXED, "", "", ""}, {T_DIRECT, T_REMOV, "", "", ""}, {T_OPTICAL, T_FIXED, "", "", ""}, {T_OPTICAL, T_REMOV, "", "", ""}, }; extern struct sd_ops sd_scsibus_ops; extern struct sd_ops sd_atapibus_ops; #define sdlock(softc) disk_lock(&(softc)->sc_dk) #define sdunlock(softc) disk_unlock(&(softc)->sc_dk) #define sdlookup(unit) (struct sd_softc *)device_lookup(&sd_cd, (unit)) int sdmatch(parent, match, aux) struct device *parent; void *match, *aux; { struct scsibus_attach_args *sa = aux; int priority; (void)scsi_inqmatch(sa->sa_inqbuf, (caddr_t)sd_patterns, sizeof(sd_patterns)/sizeof(sd_patterns[0]), sizeof(sd_patterns[0]), &priority); return (priority); } /* * The routine called by the low level scsi routine when it discovers * a device suitable for this driver. */ void sdattach(parent, self, aux) struct device *parent, *self; void *aux; { int error, result; struct sd_softc *sd = (void *)self; struct disk_parms *dp = &sd->params; struct scsibus_attach_args *sa = aux; struct scsi_link *sc_link = sa->sa_sc_link; SC_DEBUG(sc_link, SDEV_DB2, ("sdattach: ")); /* * Store information needed to contact our base driver */ sd->sc_link = sc_link; sd->type = (sa->sa_inqbuf->device & SID_TYPE); sc_link->device = &sd_switch; sc_link->device_softc = sd; /* * 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); dk_establish(&sd->sc_dk, &sd->sc_dev); if (sc_link->flags & SDEV_ATAPI && (sc_link->flags & SDEV_REMOVABLE)) { sd->sc_ops = &sd_atapibus_ops; } else { sd->sc_ops = &sd_scsibus_ops; } /* * Note if this device is ancient. This is used in sdminphys(). */ if (!(sc_link->flags & SDEV_ATAPI) && (sa->sa_inqbuf->version & SID_ANSII) == 0) sd->flags |= SDF_ANCIENT; /* * Use the subdriver to request information regarding * the drive. We cannot use interrupts yet, so the * request must specify this. */ printf("\n"); if ((sd->sc_link->quirks & SDEV_NOSTARTUNIT) == 0) { error = scsi_start(sd->sc_link, SSS_START, scsi_autoconf | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT); } else error = 0; /* Fill in name struct for spoofed label */ viscpy(sd->name.vendor, sa->sa_inqbuf->vendor, 8); viscpy(sd->name.product, sa->sa_inqbuf->product, 16); viscpy(sd->name.revision, sa->sa_inqbuf->revision, 4); 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, %d cyl, %d head, %d sec, %d bytes/sec, %ld sec total", 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"); /* * Establish a shutdown hook so that we can ensure that * our data has actually made it onto the platter at * shutdown time. Note that this relies on the fact * that the shutdown hook code puts us at the head of * the list (thus guaranteeing that our hook runs before * our ancestors'). */ if ((sd->sc_sdhook = shutdownhook_establish(sd_shutdown, sd)) == NULL) printf("%s: WARNING: unable to establish shutdown hook\n", sd->sc_dev.dv_xname); } int sdactivate(self, act) struct device *self; enum devact act; { int rv = 0; switch (act) { case DVACT_ACTIVATE: break; case DVACT_DEACTIVATE: /* * Nothing to do; we key off the device's DVF_ACTIVATE. */ break; } return (rv); } int sddetach(self, flags) struct device *self; int flags; { struct sd_softc *sc = (struct sd_softc *)self; struct buf *dp, *bp; int s, bmaj, cmaj, mn; /* Remove unprocessed buffers from queue */ s = splbio(); for (dp = &sc->buf_queue; (bp = dp->b_actf) != NULL; ) { dp->b_actf = bp->b_actf; bp->b_error = ENXIO; bp->b_flags |= B_ERROR; biodone(bp); } splx(s); /* locate the major number */ mn = SDMINOR(self->dv_unit, 0); for (bmaj = 0; bmaj < nblkdev; bmaj++) if (bdevsw[bmaj].d_open == sdopen) vdevgone(bmaj, mn, mn + MAXPARTITIONS - 1, VBLK); for (cmaj = 0; cmaj < nchrdev; cmaj++) if (cdevsw[cmaj].d_open == sdopen) vdevgone(cmaj, mn, mn + MAXPARTITIONS - 1, VCHR); /* Get rid of the shutdown hook. */ if (sc->sc_sdhook != NULL) shutdownhook_disestablish(sc->sc_sdhook); #if NRND > 0 /* Unhook the entropy source. */ rnd_detach_source(&sc->rnd_source); #endif return (0); } void sdzeroref(self) struct device *self; { struct sd_softc *sd = (struct sd_softc *)self; /* Detach disk. */ disk_detach(&sd->sc_dk); } /* * 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 scsi_link *sc_link; int unit, part; int error; unit = SDUNIT(dev); sd = sdlookup(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, part)); if ((error = sdlock(sd)) != 0) { device_unref(&sd->sc_dev); 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 = scsi_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 = scsi_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 = scsi_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. */ 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(dev, sd, sd->sc_dk.dk_label, sd->sc_dk.dk_cpulabel, 0); 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); device_unref(&sd->sc_dev); return 0; bad2: sc_link->flags &= ~SDEV_MEDIA_LOADED; bad: if (sd->sc_dk.dk_openmask == 0) { scsi_prevent(sc_link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); sc_link->flags &= ~SDEV_OPEN; } bad3: sdunlock(sd); device_unref(&sd->sc_dev); 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; int part = SDPART(dev); int error; sd = sdlookup(SDUNIT(dev)); if (sd == NULL) return ENXIO; 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) { if ((sd->flags & SDF_DIRTY) != 0 && sd->sc_ops->sdo_flush != NULL) (*sd->sc_ops->sdo_flush)(sd, 0); scsi_prevent(sd->sc_link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY); sd->sc_link->flags &= ~(SDEV_OPEN|SDEV_MEDIA_LOADED); if (sd->sc_link->flags & SDEV_EJECTING) { scsi_start(sd->sc_link, SSS_STOP|SSS_LOEJ, 0); sd->sc_link->flags &= ~SDEV_EJECTING; } } sdunlock(sd); device_unref(&sd->sc_dev); 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; int s; sd = sdlookup(SDUNIT(bp->b_dev)); if (sd == NULL) { bp->b_error = ENXIO; goto bad; } 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) { if (sd->sc_link->flags & SDEV_OPEN) bp->b_error = EIO; else bp->b_error = ENODEV; 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->sc_dk.dk_cpulabel, (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); device_unref(&sd->sc_dev); 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); if (sd != NULL) device_unref(&sd->sc_dev); } /* * 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 scsi_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 scsi_done */ void sdstart(v) register void *v; { register struct sd_softc *sd = v; register struct scsi_link *sc_link = sd->sc_link; struct buf *bp = 0; struct buf *dp; struct scsi_rw_big cmd_big; struct scsi_rw cmd_small; struct scsi_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 / (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. If the transfer will * fit in a "small" cdb, use it. */ if (!(sc_link->flags & SDEV_ATAPI) && !(sc_link->quirks & SDEV_NOCDB6) && ((blkno & 0x1fffff) == blkno) && ((nblks & 0xff) == nblks)) { /* * We can fit in a small cdb. */ bzero(&cmd_small, sizeof(cmd_small)); cmd_small.opcode = (bp->b_flags & B_READ) ? READ_COMMAND : WRITE_COMMAND; _lto3b(blkno, cmd_small.addr); cmd_small.length = nblks & 0xff; cmdlen = sizeof(cmd_small); cmdp = (struct scsi_generic *)&cmd_small; } else { /* * 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 scsi_generic *)&cmd_big; } /* Instrumentation. */ disk_busy(&sd->sc_dk); /* * Mark the disk dirty so that the cache will be * flushed on close. */ if ((bp->b_flags & B_READ) == 0) sd->flags |= SDF_DIRTY; /* * Call the routine that chats with the adapter. * Note: we cannot sleep as we may be an interrupt */ error = scsi_scsi_cmd(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) { disk_unbusy(&sd->sc_dk, 0); printf("%s: not queued, error %d\n", sd->sc_dev.dv_xname, error); } } } void sddone(xs) struct scsi_xfer *xs; { struct sd_softc *sd = xs->sc_link->device_softc; if (sd->flags & SDF_FLUSHING) { /* Flush completed, no longer dirty. */ sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); } if (xs->bp != NULL) disk_unbusy(&sd->sc_dk, (xs->bp->b_bcount - xs->bp->b_resid)); } void sdminphys(bp) struct buf *bp; { struct sd_softc *sd; long max; sd = sdlookup(SDUNIT(bp->b_dev)); if (sd == NULL) return; /* XXX - right way to fail this? */ /* * 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->scsi_minphys)(bp); device_unref(&sd->sc_dev); } 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; int error = 0; int part = SDPART(dev); sd = sdlookup(SDUNIT(dev)); if (sd == NULL) return ENXIO; 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) { switch (cmd) { case DIOCWLABEL: case DIOCLOCK: case DIOCEJECT: case SCIOCIDENTIFY: case OSCIOCIDENTIFY: case SCIOCCOMMAND: case SCIOCDEBUG: if (part == RAW_PART) break; /* FALLTHROUGH */ default: if ((sd->sc_link->flags & SDEV_OPEN) == 0) { error = ENODEV; goto exit; } else { error = EIO; goto exit; } } } switch (cmd) { case DIOCRLDINFO: sdgetdisklabel(dev, sd, sd->sc_dk.dk_label, sd->sc_dk.dk_cpulabel, 0); goto exit; case DIOCGPDINFO: { struct cpu_disklabel osdep; sdgetdisklabel(dev, sd, (struct disklabel *)addr, &osdep, 1); goto exit; } case DIOCGDINFO: *(struct disklabel *)addr = *(sd->sc_dk.dk_label); goto exit; case DIOCGPART: ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; ((struct partinfo *)addr)->part = &sd->sc_dk.dk_label->d_partitions[SDPART(dev)]; goto exit; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } if ((error = sdlock(sd)) != 0) goto exit; 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); goto exit; case DIOCWLABEL: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } if (*(int *)addr) sd->flags |= SDF_WLABEL; else sd->flags &= ~SDF_WLABEL; goto exit; case DIOCLOCK: error = scsi_prevent(sd->sc_link, (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0); goto exit; case MTIOCTOP: if (((struct mtop *)addr)->mt_op != MTOFFL) { error = EIO; goto exit; } /* FALLTHROUGH */ case DIOCEJECT: if ((sd->sc_link->flags & SDEV_REMOVABLE) == 0) { error = ENOTTY; goto exit; } sd->sc_link->flags |= SDEV_EJECTING; goto exit; case SCIOCREASSIGN: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } error = sd_reassign_blocks(sd, (*(int *)addr)); goto exit; default: if (part != RAW_PART) { error = ENOTTY; goto exit; } error = scsi_do_ioctl(sd->sc_link, dev, cmd, addr, flag, p); } exit: device_unref(&sd->sc_dev); return (error); } /* * Load the label information on the named device */ void sdgetdisklabel(dev, sd, lp, clp, spoofonly) dev_t dev; struct sd_softc *sd; struct disklabel *lp; struct cpu_disklabel *clp; int spoofonly; { char *errstring; bzero(lp, sizeof(struct disklabel)); bzero(clp, 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 */ } lp->d_type = DTYPE_SCSI; if (sd->type == T_OPTICAL) strncpy(lp->d_typename, "SCSI optical", sizeof(lp->d_typename) - 1); else strncpy(lp->d_typename, "SCSI disk", sizeof(lp->d_typename) - 1); if (strlen(sd->name.vendor) + strlen(sd->name.product) + 1 < sizeof(lp->d_packname)) sprintf(lp->d_packname, "%s %s", sd->name.vendor, sd->name.product); else strncpy(lp->d_packname, sd->name.product, sizeof(lp->d_packname) - 1); lp->d_secperunit = sd->params.disksize; lp->d_rpm = 3600; lp->d_interleave = 1; lp->d_flags = 0; /* XXX - these values for BBSIZE and SBSIZE assume ffs */ lp->d_bbsize = BBSIZE; lp->d_sbsize = SBSIZE; 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 */ errstring = readdisklabel(SDLABELDEV(dev), sdstrategy, lp, clp, spoofonly); if (errstring) { /*printf("%s: %s\n", sd->sc_dev.dv_xname, errstring);*/ return; } } void sd_shutdown(arg) void *arg; { struct sd_softc *sd = arg; /* * If the disk cache needs to be flushed, and the disk supports * it, flush it. We're cold at this point, so we poll for * completion. */ if ((sd->flags & SDF_DIRTY) != 0 && sd->sc_ops->sdo_flush != NULL) (*sd->sc_ops->sdo_flush)(sd, SCSI_AUTOCONF); } /* * 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 scsi_cmd; struct scsi_reassign_blocks_data rbdata; bzero(&scsi_cmd, sizeof(scsi_cmd)); bzero(&rbdata, sizeof(rbdata)); scsi_cmd.opcode = REASSIGN_BLOCKS; _lto2b(sizeof(rbdata.defect_descriptor[0]), rbdata.length); _lto4b(blkno, rbdata.defect_descriptor[0].dlbaddr); 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); } /* * Check Errors */ int sd_interpret_sense(xs) struct scsi_xfer *xs; { struct scsi_link *sc_link = xs->sc_link; struct scsi_sense_data *sense = &xs->sense; struct sd_softc *sd = sc_link->device_softc; int retval = SCSIRET_CONTINUE; /* * If the device is not open yet, let the generic code handle it. */ if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { return (retval); } /* * If it isn't a extended or extended/deferred error, let * the generic code handle it. */ if ((sense->error_code & SSD_ERRCODE) != 0x70 && (sense->error_code & SSD_ERRCODE) != 0x71) { /* DEFFERRED */ return (retval); } if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && sense->add_sense_code == 0x4) { if (sense->add_sense_code_qual == 0x01) { printf("%s: ..is spinning up...waiting\n", sd->sc_dev.dv_xname); /* * I really need a sdrestart function I can call here. */ delay(1000000 * 5); /* 5 seconds */ retval = SCSIRET_RETRY; } else if ((sense->add_sense_code_qual == 0x2) && (sd->sc_link->quirks & SDEV_NOSTARTUNIT) == 0) { if (sd->sc_link->flags & SDEV_REMOVABLE) { printf( "%s: removable disk stopped - not restarting\n", sd->sc_dev.dv_xname); retval = EIO; } else { printf("%s: respinning up disk\n", sd->sc_dev.dv_xname); retval = scsi_start(sd->sc_link, SSS_START, SCSI_URGENT | SCSI_NOSLEEP); if (retval != 0) { printf( "%s: respin of disk failed - %d\n", sd->sc_dev.dv_xname, retval); retval = EIO; } else { retval = SCSIRET_RETRY; } } } } return (retval); } int sdsize(dev) dev_t dev; { struct sd_softc *sd; int part, omask; int size; sd = sdlookup(SDUNIT(dev)); 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) { size = -1; goto exit; } if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) size = -1; else 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) size = -1; exit: device_unref(&sd->sc_dev); return size; } /* #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 >= 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 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 | SCSI_DATA_OUT; 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; } /* * Copy up to len chars from src to dst, ignoring non-printables. * Must be room for len+1 chars in dst so we can write the NUL. * Does not assume src is NUL-terminated. */ void viscpy(dst, src, len) u_char *dst; u_char *src; int len; { while (len > 0 && *src != '\0') { if (*src < 0x20 || *src >= 0x80) { src++; continue; } *dst++ = *src++; len--; } *dst = '\0'; }