/* $OpenBSD: sd.c,v 1.310 2020/02/20 16:26:02 krw Exp $ */ /* $NetBSD: sd.c,v 1.111 1997/04/02 02:29:41 mycroft Exp $ */ /*- * Copyright (c) 1998, 2003, 2004 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. * * 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 #include #include #include /* for BBSIZE and SBSIZE */ #include int sdmatch(struct device *, void *, void *); void sdattach(struct device *, struct device *, void *); int sdactivate(struct device *, int); int sddetach(struct device *, int); void sdminphys(struct buf *); int sdgetdisklabel(dev_t, struct sd_softc *, struct disklabel *, int); void sdstart(struct scsi_xfer *); int sd_interpret_sense(struct scsi_xfer *); int sd_read_cap_10(struct sd_softc *, int); int sd_read_cap_16(struct sd_softc *, int); int sd_read_cap(struct sd_softc *, int); int sd_thin_pages(struct sd_softc *, int); int sd_vpd_block_limits(struct sd_softc *, int); int sd_vpd_thin(struct sd_softc *, int); int sd_thin_params(struct sd_softc *, int); int sd_get_parms(struct sd_softc *, int); int sd_flush(struct sd_softc *, int); void viscpy(u_char *, u_char *, int); int sd_ioctl_inquiry(struct sd_softc *, struct dk_inquiry *); int sd_ioctl_cache(struct sd_softc *, long, struct dk_cache *); void sd_cmd_rw6(struct scsi_xfer *, int, u_int64_t, u_int); void sd_cmd_rw10(struct scsi_xfer *, int, u_int64_t, u_int); void sd_cmd_rw12(struct scsi_xfer *, int, u_int64_t, u_int); void sd_cmd_rw16(struct scsi_xfer *, int, u_int64_t, u_int); void sd_buf_done(struct scsi_xfer *); struct cfattach sd_ca = { sizeof(struct sd_softc), sdmatch, sdattach, sddetach, sdactivate }; struct cfdriver sd_cd = { NULL, "sd", DV_DISK }; const struct scsi_inquiry_pattern sd_patterns[] = { {T_DIRECT, T_FIXED, "", "", ""}, {T_DIRECT, T_REMOV, "", "", ""}, {T_RDIRECT, T_FIXED, "", "", ""}, {T_RDIRECT, T_REMOV, "", "", ""}, {T_OPTICAL, T_FIXED, "", "", ""}, {T_OPTICAL, T_REMOV, "", "", ""}, }; #define sdlookup(unit) (struct sd_softc *)disk_lookup(&sd_cd, (unit)) int sdmatch(struct device *parent, void *match, void *aux) { struct scsi_attach_args *sa = aux; int priority; (void)scsi_inqmatch(sa->sa_inqbuf, sd_patterns, nitems(sd_patterns), 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(struct device *parent, struct device *self, void *aux) { struct dk_cache dkc; struct sd_softc *sc = (struct sd_softc *)self; struct scsi_attach_args *sa = aux; struct disk_parms *dp = &sc->params; struct scsi_link *link = sa->sa_sc_link; int error, sd_autoconf; int sortby = BUFQ_DEFAULT; SC_DEBUG(link, SDEV_DB2, ("sdattach:\n")); sd_autoconf = scsi_autoconf | SCSI_SILENT | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE; /* * Store information needed to contact our base driver. */ sc->sc_link = link; link->interpret_sense = sd_interpret_sense; link->device_softc = sc; if (ISSET(link->flags, SDEV_ATAPI) && ISSET(link->flags, SDEV_REMOVABLE)) SET(link->quirks, SDEV_NOSYNCCACHE); if (!ISSET(link->inqdata.flags, SID_RelAdr)) SET(link->quirks, SDEV_ONLYBIG); /* * Note if this device is ancient. This is used in sdminphys(). */ if (!ISSET(link->flags, SDEV_ATAPI) && SID_ANSII_REV(sa->sa_inqbuf) == SCSI_REV_0) SET(sc->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"); scsi_xsh_set(&sc->sc_xsh, link, sdstart); timeout_set(&sc->sc_timeout, (void (*)(void *))scsi_xsh_add, &sc->sc_xsh); /* Spin up non-UMASS devices ready or not. */ if (!ISSET(link->flags, SDEV_UMASS)) scsi_start(link, SSS_START, sd_autoconf); /* * Some devices (e.g. BlackBerry Pearl) won't admit they have * media loaded unless its been locked in. */ if (ISSET(link->flags, SDEV_REMOVABLE)) scsi_prevent(link, PR_PREVENT, sd_autoconf); /* Check that it is still responding and ok. */ error = scsi_test_unit_ready(sc->sc_link, TEST_READY_RETRIES * 3, sd_autoconf); if (error == 0) error = sd_get_parms(sc, sd_autoconf); if (ISSET(link->flags, SDEV_REMOVABLE)) scsi_prevent(link, PR_ALLOW, sd_autoconf); if (error == 0) { printf("%s: %lluMB, %u bytes/sector, %llu sectors", sc->sc_dev.dv_xname, dp->disksize / (1048576 / dp->secsize), dp->secsize, dp->disksize); if (ISSET(sc->flags, SDF_THIN)) { sortby = BUFQ_FIFO; printf(", thin"); } if (ISSET(link->flags, SDEV_READONLY)) printf(", readonly"); printf("\n"); } /* * Initialize disk structures. */ sc->sc_dk.dk_name = sc->sc_dev.dv_xname; bufq_init(&sc->sc_bufq, sortby); /* * Enable write cache by default. */ memset(&dkc, 0, sizeof(dkc)); if (sd_ioctl_cache(sc, DIOCGCACHE, &dkc) == 0 && dkc.wrcache == 0) { dkc.wrcache = 1; sd_ioctl_cache(sc, DIOCSCACHE, &dkc); } /* Attach disk. */ disk_attach(&sc->sc_dev, &sc->sc_dk); } int sdactivate(struct device *self, int act) { struct scsi_link *link; struct sd_softc *sc = (struct sd_softc *)self; if (ISSET(sc->flags, SDF_DYING)) return ENXIO; link = sc->sc_link; switch (act) { case DVACT_SUSPEND: /* * We flush the cache, since we our next step before * DVACT_POWERDOWN might be a hibernate operation. */ if (ISSET(sc->flags, SDF_DIRTY)) sd_flush(sc, SCSI_AUTOCONF); break; case DVACT_POWERDOWN: /* * Stop the disk. Stopping the disk should flush the * cache, but we are paranoid so we flush the cache * first. We're cold at this point, so we poll for * completion. */ if (ISSET(sc->flags, SDF_DIRTY)) sd_flush(sc, SCSI_AUTOCONF); if (ISSET(boothowto, RB_POWERDOWN)) scsi_start(link, SSS_STOP, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY | SCSI_AUTOCONF); break; case DVACT_RESUME: scsi_start(link, SSS_START, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_AUTOCONF); break; case DVACT_DEACTIVATE: SET(sc->flags, SDF_DYING); timeout_del(&sc->sc_timeout); scsi_xsh_del(&sc->sc_xsh); break; } return 0; } int sddetach(struct device *self, int flags) { struct sd_softc *sc = (struct sd_softc *)self; bufq_drain(&sc->sc_bufq); disk_gone(sdopen, self->dv_unit); /* Detach disk. */ bufq_destroy(&sc->sc_bufq); disk_detach(&sc->sc_dk); return 0; } /* * Open the device. Make sure the partition info is as up-to-date as can be. */ int sdopen(dev_t dev, int flag, int fmt, struct proc *p) { struct scsi_link *link; struct sd_softc *sc; int error = 0, part, rawopen, unit; unit = DISKUNIT(dev); part = DISKPART(dev); rawopen = (part == RAW_PART) && (fmt == S_IFCHR); sc = sdlookup(unit); if (sc == NULL) return ENXIO; if (ISSET(sc->flags, SDF_DYING)) { device_unref(&sc->sc_dev); return ENXIO; } link = sc->sc_link; if (ISSET(flag, FWRITE) && ISSET(link->flags, SDEV_READONLY)) { device_unref(&sc->sc_dev); return EACCES; } SC_DEBUG(link, SDEV_DB1, ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, sd_cd.cd_ndevs, part)); if ((error = disk_lock(&sc->sc_dk)) != 0) { device_unref(&sc->sc_dev); return error; } if (sc->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens of non-raw partition. */ if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } if (!ISSET(link->flags, SDEV_MEDIA_LOADED)) { if (rawopen) goto out; error = EIO; goto bad; } } else { /* Spin up non-UMASS devices ready or not. */ if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } if (!ISSET(link->flags, SDEV_UMASS)) scsi_start(link, SSS_START, (rawopen ? SCSI_SILENT : 0) | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); /* * Use sd_interpret_sense() for sense errors. * * But only after spinning the disk up! Just in case a broken * device returns "Initialization command required." and causes * a loop of scsi_start() calls. */ if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } SET(link->flags, SDEV_OPEN); /* * Try to prevent the unloading of a removable device while * it's open. But allow the open to proceed if the device can't * be locked in. */ if (ISSET(link->flags, SDEV_REMOVABLE)) { scsi_prevent(link, PR_PREVENT, SCSI_SILENT | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); } /* Check that it is still responding and ok. */ if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } error = scsi_test_unit_ready(link, TEST_READY_RETRIES, SCSI_SILENT | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); if (error) { if (rawopen) { error = 0; goto out; } else goto bad; } /* Load the physical device parameters. */ if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } SET(link->flags, SDEV_MEDIA_LOADED); if (sd_get_parms(sc, (rawopen ? SCSI_SILENT : 0)) == -1) { if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } CLR(link->flags, SDEV_MEDIA_LOADED); error = ENXIO; goto bad; } SC_DEBUG(link, SDEV_DB3, ("Params loaded\n")); /* Load the partition info if not already loaded. */ error = sdgetdisklabel(dev, sc, sc->sc_dk.dk_label, 0); if (error == EIO || error == ENXIO) goto bad; SC_DEBUG(link, SDEV_DB3, ("Disklabel loaded\n")); } out: if ((error = disk_openpart(&sc->sc_dk, part, fmt, 1)) != 0) goto bad; SC_DEBUG(link, SDEV_DB3, ("open complete\n")); /* It's OK to fall through because dk_openmask is now non-zero. */ bad: if (sc->sc_dk.dk_openmask == 0) { if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } if (ISSET(link->flags, SDEV_REMOVABLE)) scsi_prevent(link, PR_ALLOW, SCSI_SILENT | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } CLR(link->flags, SDEV_OPEN | SDEV_MEDIA_LOADED); } die: disk_unlock(&sc->sc_dk); device_unref(&sc->sc_dev); return error; } /* * Close the device. Only called if we are the last occurrence of an open * device. Convenient now but usually a pain. */ int sdclose(dev_t dev, int flag, int fmt, struct proc *p) { struct scsi_link *link; struct sd_softc *sc; int part = DISKPART(dev); int error = 0; sc = sdlookup(DISKUNIT(dev)); if (sc == NULL) return ENXIO; if (ISSET(sc->flags, SDF_DYING)) { device_unref(&sc->sc_dev); return ENXIO; } link = sc->sc_link; disk_lock_nointr(&sc->sc_dk); disk_closepart(&sc->sc_dk, part, fmt); if ((ISSET(flag, FWRITE) || sc->sc_dk.dk_openmask == 0) && ISSET(sc->flags, SDF_DIRTY)) sd_flush(sc, 0); if (sc->sc_dk.dk_openmask == 0) { if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } if (ISSET(link->flags, SDEV_REMOVABLE)) scsi_prevent(link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY | SCSI_SILENT); if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } CLR(link->flags, SDEV_OPEN | SDEV_MEDIA_LOADED); if (ISSET(link->flags, SDEV_EJECTING)) { scsi_start(link, SSS_STOP|SSS_LOEJ, 0); if (ISSET(sc->flags, SDF_DYING)) { error = ENXIO; goto die; } CLR(link->flags, SDEV_EJECTING); } timeout_del(&sc->sc_timeout); scsi_xsh_del(&sc->sc_xsh); } die: disk_unlock(&sc->sc_dk); device_unref(&sc->sc_dev); return error; } /* * 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(struct buf *bp) { struct scsi_link *link; struct sd_softc *sc; int s; sc = sdlookup(DISKUNIT(bp->b_dev)); if (sc == NULL) { bp->b_error = ENXIO; goto bad; } if (ISSET(sc->flags, SDF_DYING)) { bp->b_error = ENXIO; goto bad; } link = sc->sc_link; SC_DEBUG(link, SDEV_DB2, ("sdstrategy: %ld bytes @ blk %lld\n", bp->b_bcount, (long long)bp->b_blkno)); /* * If the device has been made invalid, error out. */ if (!ISSET(link->flags, SDEV_MEDIA_LOADED)) { if (ISSET(link->flags, SDEV_OPEN)) bp->b_error = EIO; else bp->b_error = ENODEV; goto bad; } /* Validate the request. */ if (bounds_check_with_label(bp, sc->sc_dk.dk_label) == -1) goto done; /* Place it in the queue of disk activities for this disk. */ bufq_queue(&sc->sc_bufq, bp); /* * Tell the device to get going on the transfer if it's * not doing anything, otherwise just wait for completion */ scsi_xsh_add(&sc->sc_xsh); device_unref(&sc->sc_dev); return; bad: SET(bp->b_flags, B_ERROR); bp->b_resid = bp->b_bcount; done: s = splbio(); biodone(bp); splx(s); if (sc != NULL) device_unref(&sc->sc_dev); } void sd_cmd_rw6(struct scsi_xfer *xs, int read, u_int64_t secno, u_int nsecs) { struct scsi_rw *cmd = (struct scsi_rw *)xs->cmd; cmd->opcode = read ? READ_COMMAND : WRITE_COMMAND; _lto3b(secno, cmd->addr); cmd->length = nsecs; xs->cmdlen = sizeof(*cmd); } void sd_cmd_rw10(struct scsi_xfer *xs, int read, u_int64_t secno, u_int nsecs) { struct scsi_rw_big *cmd = (struct scsi_rw_big *)xs->cmd; cmd->opcode = read ? READ_BIG : WRITE_BIG; _lto4b(secno, cmd->addr); _lto2b(nsecs, cmd->length); xs->cmdlen = sizeof(*cmd); } void sd_cmd_rw12(struct scsi_xfer *xs, int read, u_int64_t secno, u_int nsecs) { struct scsi_rw_12 *cmd = (struct scsi_rw_12 *)xs->cmd; cmd->opcode = read ? READ_12 : WRITE_12; _lto4b(secno, cmd->addr); _lto4b(nsecs, cmd->length); xs->cmdlen = sizeof(*cmd); } void sd_cmd_rw16(struct scsi_xfer *xs, int read, u_int64_t secno, u_int nsecs) { struct scsi_rw_16 *cmd = (struct scsi_rw_16 *)xs->cmd; cmd->opcode = read ? READ_16 : WRITE_16; _lto8b(secno, cmd->addr); _lto4b(nsecs, cmd->length); xs->cmdlen = sizeof(*cmd); } /* * 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. */ void sdstart(struct scsi_xfer *xs) { struct scsi_link *link = xs->sc_link; struct sd_softc *sc = link->device_softc; struct buf *bp; struct partition *p; int nsecs, read; u_int64_t secno; if (ISSET(sc->flags, SDF_DYING)) { scsi_xs_put(xs); return; } if (!ISSET(link->flags, SDEV_MEDIA_LOADED)) { bufq_drain(&sc->sc_bufq); scsi_xs_put(xs); return; } bp = bufq_dequeue(&sc->sc_bufq); if (bp == NULL) { scsi_xs_put(xs); return; } secno = DL_BLKTOSEC(sc->sc_dk.dk_label, bp->b_blkno); p = &sc->sc_dk.dk_label->d_partitions[DISKPART(bp->b_dev)]; secno += DL_GETPOFFSET(p); nsecs = howmany(bp->b_bcount, sc->sc_dk.dk_label->d_secsize); read = bp->b_flags & B_READ; /* * Fill out the scsi command. If the transfer will * fit in a "small" cdb, use it. */ if (!ISSET(link->flags, SDEV_ATAPI) && !ISSET(link->quirks, SDEV_ONLYBIG) && ((secno & 0x1fffff) == secno) && ((nsecs & 0xff) == nsecs)) sd_cmd_rw6(xs, read, secno, nsecs); else if (((secno & 0xffffffff) == secno) && ((nsecs & 0xffff) == nsecs)) sd_cmd_rw10(xs, read, secno, nsecs); else if (((secno & 0xffffffff) == secno) && ((nsecs & 0xffffffff) == nsecs)) sd_cmd_rw12(xs, read, secno, nsecs); else sd_cmd_rw16(xs, read, secno, nsecs); SET(xs->flags, (read ? SCSI_DATA_IN : SCSI_DATA_OUT)); xs->timeout = 60000; xs->data = bp->b_data; xs->datalen = bp->b_bcount; xs->done = sd_buf_done; xs->cookie = bp; xs->bp = bp; /* Instrumentation. */ disk_busy(&sc->sc_dk); /* Mark disk as dirty. */ if (!read) SET(sc->flags, SDF_DIRTY); scsi_xs_exec(xs); /* Move onto the next io. */ if (ISSET(sc->flags, SDF_WAITING)) CLR(sc->flags, SDF_WAITING); else if (bufq_peek(&sc->sc_bufq)) scsi_xsh_add(&sc->sc_xsh); } void sd_buf_done(struct scsi_xfer *xs) { struct sd_softc *sc = xs->sc_link->device_softc; struct buf *bp = xs->cookie; int error, s; switch (xs->error) { case XS_NOERROR: bp->b_error = 0; CLR(bp->b_flags, B_ERROR); bp->b_resid = xs->resid; break; case XS_SENSE: case XS_SHORTSENSE: SC_DEBUG_SENSE(xs); error = sd_interpret_sense(xs); if (error == 0) { bp->b_error = 0; CLR(bp->b_flags, B_ERROR); bp->b_resid = xs->resid; break; } if (error != ERESTART) { bp->b_error = error; SET(bp->b_flags, B_ERROR); xs->retries = 0; } goto retry; case XS_BUSY: if (xs->retries) { if (scsi_delay(xs, 1) != ERESTART) xs->retries = 0; } goto retry; case XS_TIMEOUT: retry: if (xs->retries--) { scsi_xs_exec(xs); return; } /* FALLTHROUGH */ default: if (bp->b_error == 0) bp->b_error = EIO; SET(bp->b_flags, B_ERROR); bp->b_resid = bp->b_bcount; break; } disk_unbusy(&sc->sc_dk, bp->b_bcount - xs->resid, bp->b_blkno, bp->b_flags & B_READ); s = splbio(); biodone(bp); splx(s); scsi_xs_put(xs); } void sdminphys(struct buf *bp) { struct scsi_link *link; struct sd_softc *sc; long max; sc = sdlookup(DISKUNIT(bp->b_dev)); if (sc == NULL) return; /* XXX - right way to fail this? */ if (ISSET(sc->flags, SDF_DYING)) { device_unref(&sc->sc_dev); return; } link = sc->sc_link; /* * 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 setting 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 (ISSET(sc->flags, SDF_ANCIENT)) { max = sc->sc_dk.dk_label->d_secsize * 0xff; if (bp->b_bcount > max) bp->b_bcount = max; } if (link->adapter->dev_minphys != NULL) (*link->adapter->dev_minphys)(bp, link); else minphys(bp); device_unref(&sc->sc_dev); } int sdread(dev_t dev, struct uio *uio, int ioflag) { return physio(sdstrategy, dev, B_READ, sdminphys, uio); } int sdwrite(dev_t dev, struct uio *uio, int ioflag) { return physio(sdstrategy, dev, B_WRITE, sdminphys, uio); } /* * Perform special action on behalf of the user. Knows about the internals of * this device */ int sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) { struct scsi_link *link; struct sd_softc *sc; struct disklabel *lp; int error = 0; int part = DISKPART(dev); sc = sdlookup(DISKUNIT(dev)); if (sc == NULL) return ENXIO; if (ISSET(sc->flags, SDF_DYING)) { device_unref(&sc->sc_dev); return ENXIO; } link = sc->sc_link; SC_DEBUG(link, SDEV_DB2, ("sdioctl 0x%lx\n", cmd)); /* * If the device is not valid, abandon ship. */ if (!ISSET(link->flags, SDEV_MEDIA_LOADED)) { switch (cmd) { case DIOCLOCK: case DIOCEJECT: case SCIOCIDENTIFY: case SCIOCCOMMAND: case SCIOCDEBUG: if (part == RAW_PART) break; /* FALLTHROUGH */ default: if (!ISSET(link->flags, SDEV_OPEN)) { error = ENODEV; goto exit; } else { error = EIO; goto exit; } } } switch (cmd) { case DIOCRLDINFO: lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK); sdgetdisklabel(dev, sc, lp, 0); memcpy(sc->sc_dk.dk_label, lp, sizeof(*lp)); free(lp, M_TEMP, sizeof(*lp)); goto exit; case DIOCGPDINFO: sdgetdisklabel(dev, sc, (struct disklabel *)addr, 1); goto exit; case DIOCGDINFO: *(struct disklabel *)addr = *(sc->sc_dk.dk_label); goto exit; case DIOCGPART: ((struct partinfo *)addr)->disklab = sc->sc_dk.dk_label; ((struct partinfo *)addr)->part = &sc->sc_dk.dk_label->d_partitions[DISKPART(dev)]; goto exit; case DIOCWDINFO: case DIOCSDINFO: if (!ISSET(flag, FWRITE)) { error = EBADF; goto exit; } if ((error = disk_lock(&sc->sc_dk)) != 0) goto exit; error = setdisklabel(sc->sc_dk.dk_label, (struct disklabel *)addr, sc->sc_dk.dk_openmask); if (error == 0) { if (cmd == DIOCWDINFO) error = writedisklabel(DISKLABELDEV(dev), sdstrategy, sc->sc_dk.dk_label); } disk_unlock(&sc->sc_dk); goto exit; case DIOCLOCK: error = scsi_prevent(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 (!ISSET(link->flags, SDEV_REMOVABLE)) { error = ENOTTY; goto exit; } SET(link->flags, SDEV_EJECTING); goto exit; case DIOCINQ: error = scsi_do_ioctl(link, cmd, addr, flag); if (error == ENOTTY) error = sd_ioctl_inquiry(sc, (struct dk_inquiry *)addr); goto exit; case DIOCSCACHE: if (!ISSET(flag, FWRITE)) { error = EBADF; goto exit; } /* FALLTHROUGH */ case DIOCGCACHE: error = sd_ioctl_cache(sc, cmd, (struct dk_cache *)addr); goto exit; case DIOCCACHESYNC: if (!ISSET(flag, FWRITE)) { error = EBADF; goto exit; } if (ISSET(sc->flags, SDF_DIRTY) || *(int *)addr != 0) error = sd_flush(sc, 0); goto exit; default: if (part != RAW_PART) { error = ENOTTY; goto exit; } error = scsi_do_ioctl(link, cmd, addr, flag); } exit: device_unref(&sc->sc_dev); return error; } int sd_ioctl_inquiry(struct sd_softc *sc, struct dk_inquiry *di) { struct scsi_link *link; struct scsi_vpd_serial *vpd; vpd = dma_alloc(sizeof(*vpd), PR_WAITOK | PR_ZERO); if (ISSET(sc->flags, SDF_DYING)) { dma_free(vpd, sizeof(*vpd)); return ENXIO; } link = sc->sc_link; bzero(di, sizeof(struct dk_inquiry)); scsi_strvis(di->vendor, link->inqdata.vendor, sizeof(link->inqdata.vendor)); scsi_strvis(di->product, link->inqdata.product, sizeof(link->inqdata.product)); scsi_strvis(di->revision, link->inqdata.revision, sizeof(link->inqdata.revision)); /* the serial vpd page is optional */ if (scsi_inquire_vpd(link, vpd, sizeof(*vpd), SI_PG_SERIAL, 0) == 0) scsi_strvis(di->serial, vpd->serial, sizeof(vpd->serial)); else strlcpy(di->serial, "(unknown)", sizeof(vpd->serial)); dma_free(vpd, sizeof(*vpd)); return 0; } int sd_ioctl_cache(struct sd_softc *sc, long cmd, struct dk_cache *dkc) { struct scsi_link *link; union scsi_mode_sense_buf *buf; struct page_caching_mode *mode = NULL; u_int wrcache, rdcache; int big, rv; if (ISSET(sc->flags, SDF_DYING)) return ENXIO; link = sc->sc_link; if (ISSET(link->flags, SDEV_UMASS)) return EOPNOTSUPP; /* See if the adapter has special handling. */ rv = scsi_do_ioctl(link, cmd, (caddr_t)dkc, 0); if (rv != ENOTTY) return rv; buf = dma_alloc(sizeof(*buf), PR_WAITOK); if (buf == NULL) return ENOMEM; if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } rv = scsi_do_mode_sense(link, PAGE_CACHING_MODE, buf, (void **)&mode, sizeof(*mode) - 4, scsi_autoconf | SCSI_SILENT, &big); if (rv == 0 && mode == NULL) rv = EIO; if (rv != 0) goto done; wrcache = (ISSET(mode->flags, PG_CACHE_FL_WCE) ? 1 : 0); rdcache = (ISSET(mode->flags, PG_CACHE_FL_RCD) ? 0 : 1); switch (cmd) { case DIOCGCACHE: dkc->wrcache = wrcache; dkc->rdcache = rdcache; break; case DIOCSCACHE: if (dkc->wrcache == wrcache && dkc->rdcache == rdcache) break; if (dkc->wrcache) SET(mode->flags, PG_CACHE_FL_WCE); else CLR(mode->flags, PG_CACHE_FL_WCE); if (dkc->rdcache) CLR(mode->flags, PG_CACHE_FL_RCD); else SET(mode->flags, PG_CACHE_FL_RCD); if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } if (big) { rv = scsi_mode_select_big(link, SMS_PF, &buf->hdr_big, scsi_autoconf | SCSI_SILENT, 20000); } else { rv = scsi_mode_select(link, SMS_PF, &buf->hdr, scsi_autoconf | SCSI_SILENT, 20000); } break; } done: dma_free(buf, sizeof(*buf)); return rv; } /* * Load the label information on the named device. */ int sdgetdisklabel(dev_t dev, struct sd_softc *sc, struct disklabel *lp, int spoofonly) { char packname[sizeof(lp->d_packname) + 1]; char product[17], vendor[9]; struct scsi_link *link; size_t len; if (ISSET(sc->flags, SDF_DYING)) return ENXIO; link = sc->sc_link; bzero(lp, sizeof(struct disklabel)); lp->d_secsize = sc->params.secsize; lp->d_ntracks = sc->params.heads; lp->d_nsectors = sc->params.sectors; lp->d_ncylinders = sc->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 ((link->inqdata.device & SID_TYPE) == T_OPTICAL) strncpy(lp->d_typename, "SCSI optical", sizeof(lp->d_typename)); else strncpy(lp->d_typename, "SCSI disk", sizeof(lp->d_typename)); /* * Try to fit ' ' into d_packname. If that doesn't fit * then leave out ' ' and use only as much of '' as * does fit. */ viscpy(vendor, link->inqdata.vendor, 8); viscpy(product, link->inqdata.product, 16); len = snprintf(packname, sizeof(packname), "%s %s", vendor, product); if (len > sizeof(lp->d_packname)) { strlcpy(packname, product, sizeof(packname)); len = strlen(packname); } /* * It is safe to use len as the count of characters to copy because * packname is sizeof(lp->d_packname)+1, the string in packname is * always null terminated and len does not count the terminating null. * d_packname is not a null terminated string. */ memcpy(lp->d_packname, packname, len); DL_SETDSIZE(lp, sc->params.disksize); lp->d_version = 1; lp->d_flags = 0; /* XXX - These values for BBSIZE and SBSIZE assume ffs. */ lp->d_bbsize = BBSIZE; lp->d_sbsize = SBSIZE; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); /* * Call the generic disklabel extraction routine. */ return readdisklabel(DISKLABELDEV(dev), sdstrategy, lp, spoofonly); } /* * Check Errors. */ int sd_interpret_sense(struct scsi_xfer *xs) { struct scsi_sense_data *sense = &xs->sense; struct scsi_link *link = xs->sc_link; int retval; u_int8_t serr = sense->error_code & SSD_ERRCODE; /* * Let the generic code handle everything except a few categories of * LUN not ready errors on open devices. */ if ((!ISSET(link->flags, SDEV_OPEN)) || (serr != SSD_ERRCODE_CURRENT && serr != SSD_ERRCODE_DEFERRED) || ((sense->flags & SSD_KEY) != SKEY_NOT_READY) || (sense->extra_len < 6)) return scsi_interpret_sense(xs); if (ISSET(xs->flags, SCSI_IGNORE_NOT_READY)) return 0; switch (ASC_ASCQ(sense)) { case SENSE_NOT_READY_BECOMING_READY: SC_DEBUG(link, SDEV_DB1, ("becoming ready.\n")); retval = scsi_delay(xs, 5); break; case SENSE_NOT_READY_INIT_REQUIRED: SC_DEBUG(link, SDEV_DB1, ("spinning up\n")); retval = scsi_start(link, SSS_START, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_NOSLEEP); if (retval == 0) retval = ERESTART; else if (retval == ENOMEM) /* Can't issue the command. Fall back on a delay. */ retval = scsi_delay(xs, 5); else SC_DEBUG(link, SDEV_DB1, ("spin up failed (%#x)\n", retval)); break; default: retval = scsi_interpret_sense(xs); break; } return retval; } daddr_t sdsize(dev_t dev) { struct disklabel *lp; struct sd_softc *sc; daddr_t size; int part, omask; sc = sdlookup(DISKUNIT(dev)); if (sc == NULL) return -1; if (ISSET(sc->flags, SDF_DYING)) { size = -1; goto exit; } part = DISKPART(dev); omask = sc->sc_dk.dk_openmask & (1 << part); if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) { size = -1; goto exit; } lp = sc->sc_dk.dk_label; if (ISSET(sc->flags, SDF_DYING)) { size = -1; goto exit; } if (!ISSET(sc->sc_link->flags, SDEV_MEDIA_LOADED)) size = -1; else if (lp->d_partitions[part].p_fstype != FS_SWAP) size = -1; else size = DL_SECTOBLK(lp, DL_GETPSIZE(&lp->d_partitions[part])); if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) size = -1; exit: device_unref(&sc->sc_dev); return size; } /* #define SD_DUMP_NOT_TRUSTED if you just want to watch. */ static int sddoingadump; /* * Dump all of physical memory into the partition specified, starting * at offset 'dumplo' into the partition. */ int sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) { struct sd_softc *sc; struct disklabel *lp; struct scsi_xfer *xs; u_int64_t nsects; /* partition sectors */ u_int64_t sectoff; /* partition offset */ u_int64_t totwrt; /* sectors left */ int part, rv, unit; u_int32_t sectorsize; u_int32_t nwrt; /* sectors to write */ /* Check if recursive dump; if so, punt. */ if (sddoingadump) return EFAULT; if (blkno < 0) return EINVAL; /* Mark as active early. */ sddoingadump = 1; unit = DISKUNIT(dev); /* Decompose unit & partition. */ part = DISKPART(dev); /* Check for acceptable drive number. */ if (unit >= sd_cd.cd_ndevs || (sc = 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 (!ISSET(sc->sc_link->flags, SDEV_MEDIA_LOADED)) return ENXIO; #endif /* 0 */ /* Convert to disk sectors. Request must be a multiple of size. */ lp = sc->sc_dk.dk_label; sectorsize = lp->d_secsize; if ((size % sectorsize) != 0) return EFAULT; if ((blkno % DL_BLKSPERSEC(lp)) != 0) return EFAULT; totwrt = size / sectorsize; blkno = DL_BLKTOSEC(lp, blkno); nsects = DL_GETPSIZE(&lp->d_partitions[part]); sectoff = DL_GETPOFFSET(&lp->d_partitions[part]); /* Check transfer bounds against partition size. */ if ((blkno + totwrt) > nsects) return EINVAL; /* Offset block number to start of partition. */ blkno += sectoff; while (totwrt > 0) { if (totwrt > UINT32_MAX) nwrt = UINT32_MAX; else nwrt = totwrt; #ifndef SD_DUMP_NOT_TRUSTED xs = scsi_xs_get(sc->sc_link, SCSI_NOSLEEP); if (xs == NULL) return ENOMEM; xs->timeout = 10000; SET(xs->flags, SCSI_DATA_OUT); xs->data = va; xs->datalen = nwrt * sectorsize; sd_cmd_rw10(xs, 0, blkno, nwrt); /* XXX */ rv = scsi_xs_sync(xs); scsi_xs_put(xs); if (rv != 0) return ENXIO; #else /* SD_DUMP_NOT_TRUSTED */ /* Let's just talk about this first. */ printf("sd%d: dump addr 0x%x, blk %lld\n", unit, va, (long long)blkno); delay(500 * 1000); /* 1/2 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(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'; } int sd_read_cap_10(struct sd_softc *sc, int flags) { struct scsi_read_cap_data *rdcap; int rv; rdcap = dma_alloc(sizeof(*rdcap), (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (rdcap == NULL) return -1; if (ISSET(sc->flags, SDF_DYING)) { rv = -1; goto done; } rv = scsi_read_cap_10(sc->sc_link, rdcap, flags); if (rv == 0) { if (_8btol(rdcap->addr) == 0) { rv = -1; goto done; } sc->params.disksize = _4btol(rdcap->addr) + 1ll; sc->params.secsize = _4btol(rdcap->length); CLR(sc->flags, SDF_THIN); } done: dma_free(rdcap, sizeof(*rdcap)); return rv; } int sd_read_cap_16(struct sd_softc *sc, int flags) { struct scsi_read_cap_data_16 *rdcap; int rv; rdcap = dma_alloc(sizeof(*rdcap), (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (rdcap == NULL) return -1; if (ISSET(sc->flags, SDF_DYING)) { rv = -1; goto done; } rv = scsi_read_cap_16(sc->sc_link, rdcap, flags); if (rv == 0) { if (_8btol(rdcap->addr) == 0) { rv = -1; goto done; } sc->params.disksize = _8btol(rdcap->addr) + 1ll; sc->params.secsize = _4btol(rdcap->length); if (ISSET(_2btol(rdcap->lowest_aligned), READ_CAP_16_TPE)) SET(sc->flags, SDF_THIN); else CLR(sc->flags, SDF_THIN); } done: dma_free(rdcap, sizeof(*rdcap)); return rv; } int sd_read_cap(struct sd_softc *sc, int flags) { int rv; CLR(flags, SCSI_IGNORE_ILLEGAL_REQUEST); /* * post-SPC2 (i.e. post-SCSI-3) devices can start with 16 byte * read capacity commands. Older devices start with the 10 byte * version and move up to the 16 byte version if the device * says it has more sectors than can be reported via the 10 byte * read capacity. */ if (SID_ANSII_REV(&sc->sc_link->inqdata) > SCSI_REV_SPC2) { rv = sd_read_cap_16(sc, flags); if (rv != 0) rv = sd_read_cap_10(sc, flags); } else { rv = sd_read_cap_10(sc, flags); if (rv == 0 && sc->params.disksize == 0x100000000ll) rv = sd_read_cap_16(sc, flags); } return rv; } int sd_thin_pages(struct sd_softc *sc, int flags) { struct scsi_vpd_hdr *pg; u_int8_t *pages; size_t len = 0; int i, rv, score = 0; pg = dma_alloc(sizeof(*pg), (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (pg == NULL) return ENOMEM; if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } rv = scsi_inquire_vpd(sc->sc_link, pg, sizeof(*pg), SI_PG_SUPPORTED, flags); if (rv != 0) goto done; len = _2btol(pg->page_length); dma_free(pg, sizeof(*pg)); pg = dma_alloc(sizeof(*pg) + len, (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (pg == NULL) return ENOMEM; if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } rv = scsi_inquire_vpd(sc->sc_link, pg, sizeof(*pg) + len, SI_PG_SUPPORTED, flags); if (rv != 0) goto done; pages = (u_int8_t *)(pg + 1); if (pages[0] != SI_PG_SUPPORTED) { rv = EIO; goto done; } for (i = 1; i < len; i++) { switch (pages[i]) { case SI_PG_DISK_LIMITS: case SI_PG_DISK_THIN: score++; break; } } if (score < 2) rv = EOPNOTSUPP; done: dma_free(pg, sizeof(*pg) + len); return rv; } int sd_vpd_block_limits(struct sd_softc *sc, int flags) { struct scsi_vpd_disk_limits *pg; int rv; pg = dma_alloc(sizeof(*pg), (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (pg == NULL) return ENOMEM; if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } rv = scsi_inquire_vpd(sc->sc_link, pg, sizeof(*pg), SI_PG_DISK_LIMITS, flags); if (rv != 0) goto done; if (_2btol(pg->hdr.page_length) == SI_PG_DISK_LIMITS_LEN_THIN) { sc->params.unmap_sectors = _4btol(pg->max_unmap_lba_count); sc->params.unmap_descs = _4btol(pg->max_unmap_desc_count); } else rv = EOPNOTSUPP; done: dma_free(pg, sizeof(*pg)); return rv; } int sd_vpd_thin(struct sd_softc *sc, int flags) { struct scsi_vpd_disk_thin *pg; int rv; pg = dma_alloc(sizeof(*pg), (ISSET(flags, SCSI_NOSLEEP) ? PR_NOWAIT : PR_WAITOK) | PR_ZERO); if (pg == NULL) return ENOMEM; if (ISSET(sc->flags, SDF_DYING)) { rv = ENXIO; goto done; } rv = scsi_inquire_vpd(sc->sc_link, pg, sizeof(*pg), SI_PG_DISK_THIN, flags); if (rv != 0) goto done; #ifdef notyet if (ISSET(pg->flags, VPD_DISK_THIN_TPU)) sc->sc_delete = sd_unmap; else if (ISSET(pg->flags, VPD_DISK_THIN_TPWS)) { sc->sc_delete = sd_write_same_16; sc->params.unmap_descs = 1; /* WRITE SAME 16 only does one */ } else rv = EOPNOTSUPP; #endif /* notyet */ done: dma_free(pg, sizeof(*pg)); return rv; } int sd_thin_params(struct sd_softc *sc, int flags) { int rv; rv = sd_thin_pages(sc, flags); if (rv != 0) return rv; rv = sd_vpd_block_limits(sc, flags); if (rv != 0) return rv; rv = sd_vpd_thin(sc, flags); if (rv != 0) return rv; return 0; } /* * Fill out the disk parameter structure. Return 0 if the structure is correctly * filled in, otherwise return -1. * * The caller is responsible for clearing the SDEV_MEDIA_LOADED flag if the * structure cannot be completed. */ int sd_get_parms(struct sd_softc *sc, int flags) { struct disk_parms dp; struct scsi_link *link = sc->sc_link; union scsi_mode_sense_buf *buf = NULL; struct page_rigid_geometry *rigid = NULL; struct page_flex_geometry *flex = NULL; struct page_reduced_geometry *reduced = NULL; u_char *page0 = NULL; int big, err = 0; if (sd_read_cap(sc, flags) != 0) return -1; if (ISSET(sc->flags, SDF_THIN) && sd_thin_params(sc, flags) != 0) { /* we dont know the unmap limits, so we cant use thin shizz */ CLR(sc->flags, SDF_THIN); } /* * Work on a copy of the values initialized by sd_read_cap() and * sd_thin_params(). */ dp = sc->params; buf = dma_alloc(sizeof(*buf), PR_NOWAIT); if (buf == NULL) goto validate; if (ISSET(sc->flags, SDF_DYING)) goto die; /* * Ask for page 0 (vendor specific) mode sense data to find * READONLY info. The only thing USB devices will ask for. * * page0 == NULL is a valid situation. */ err = scsi_do_mode_sense(link, 0, buf, (void **)&page0, 1, flags | SCSI_SILENT, &big); if (ISSET(sc->flags, SDF_DYING)) goto die; if (err == 0) { if (big && buf->hdr_big.dev_spec & SMH_DSP_WRITE_PROT) SET(link->flags, SDEV_READONLY); else if (!big && buf->hdr.dev_spec & SMH_DSP_WRITE_PROT) SET(link->flags, SDEV_READONLY); else CLR(link->flags, SDEV_READONLY); } /* * Many UMASS devices choke when asked about their geometry. Most * don't have a meaningful geometry anyway, so just fake it if * sd_read_cap() worked. */ if (ISSET(link->flags, SDEV_UMASS) && dp.disksize > 0) goto validate; switch (link->inqdata.device & SID_TYPE) { case T_OPTICAL: /* No more information needed or available. */ break; case T_RDIRECT: /* T_RDIRECT supports only PAGE_REDUCED_GEOMETRY (6). */ err = scsi_do_mode_sense(link, PAGE_REDUCED_GEOMETRY, buf, (void **)&reduced, sizeof(*reduced), flags | SCSI_SILENT, &big); if (err == 0) { scsi_parse_blkdesc(link, buf, big, NULL, NULL, &dp.secsize); if (reduced != NULL) { if (dp.disksize == 0) dp.disksize = _5btol(reduced->sectors); if (dp.secsize == 0) dp.secsize = _2btol(reduced->bytes_s); } } break; default: /* * NOTE: Some devices leave off the last four bytes of * PAGE_RIGID_GEOMETRY and PAGE_FLEX_GEOMETRY mode sense pages. * The only information in those four bytes is RPM information * so accept the page. The extra bytes will be zero and RPM will * end up with the default value of 3600. */ err = 0; if (!ISSET(link->flags, SDEV_ATAPI) || !ISSET(link->flags, SDEV_REMOVABLE)) err = scsi_do_mode_sense(link, PAGE_RIGID_GEOMETRY, buf, (void **)&rigid, sizeof(*rigid) - 4, flags | SCSI_SILENT, &big); if (err == 0) { scsi_parse_blkdesc(link, buf, big, NULL, NULL, &dp.secsize); if (rigid != NULL) { dp.heads = rigid->nheads; dp.cyls = _3btol(rigid->ncyl); if (dp.heads * dp.cyls > 0) dp.sectors = dp.disksize / (dp.heads * dp.cyls); } } else { if (ISSET(sc->flags, SDF_DYING)) goto die; err = scsi_do_mode_sense(link, PAGE_FLEX_GEOMETRY, buf, (void **)&flex, sizeof(*flex) - 4, flags | SCSI_SILENT, &big); if (err == 0) { scsi_parse_blkdesc(link, buf, big, NULL, NULL, &dp.secsize); if (flex != NULL) { dp.sectors = flex->ph_sec_tr; dp.heads = flex->nheads; dp.cyls = _2btol(flex->ncyl); if (dp.secsize == 0) dp.secsize = _2btol(flex->bytes_s); if (dp.disksize == 0) dp.disksize = (u_int64_t)dp.cyls * dp.heads * dp.sectors; } } } break; } validate: if (buf) { dma_free(buf, sizeof(*buf)); buf = NULL; } if (dp.disksize == 0) goto die; /* * Restrict secsize values to powers of two between 512 and 64k. */ switch (dp.secsize) { case 0: dp.secsize = DEV_BSIZE; break; case 0x200: /* == 512, == DEV_BSIZE on all architectures. */ case 0x400: case 0x800: case 0x1000: case 0x2000: case 0x4000: case 0x8000: case 0x10000: break; default: SC_DEBUG(sc->sc_link, SDEV_DB1, ("sd_get_parms: bad secsize: %#x\n", dp.secsize)); return -1; } /* * XXX THINK ABOUT THIS!! Using values such that sectors * heads * * cyls is <= disk_size can lead to wasted space. We need a more * careful calculation/validation to make everything work out * optimally. */ if (dp.disksize > 0xffffffff && (dp.heads * dp.sectors) < 0xffff) { dp.heads = 511; dp.sectors = 255; dp.cyls = 0; } /* * Use standard geometry values for anything we still don't * know. */ if (dp.heads == 0) dp.heads = 255; if (dp.sectors == 0) dp.sectors = 63; if (dp.cyls == 0) { dp.cyls = dp.disksize / (dp.heads * dp.sectors); if (dp.cyls == 0) { /* Put everything into one cylinder. */ dp.heads = dp.cyls = 1; dp.sectors = dp.disksize; } } #ifdef SCSIDEBUG if (dp.disksize != (u_int64_t)dp.cyls * dp.heads * dp.sectors) { sc_print_addr(sc->sc_link); printf("disksize (%llu) != cyls (%u) * heads (%u) * " "sectors/track (%u) (%llu)\n", dp.disksize, dp.cyls, dp.heads, dp.sectors, (u_int64_t)dp.cyls * dp.heads * dp.sectors); } #endif /* SCSIDEBUG */ sc->params = dp; return 0; die: dma_free(buf, sizeof(*buf)); return -1; } int sd_flush(struct sd_softc *sc, int flags) { struct scsi_link *link; struct scsi_xfer *xs; struct scsi_synchronize_cache *cmd; int error; if (ISSET(sc->flags, SDF_DYING)) return ENXIO; link = sc->sc_link; if (ISSET(link->quirks, SDEV_NOSYNCCACHE)) return 0; /* * Issue a SYNCHRONIZE CACHE. Address 0, length 0 means "all remaining * blocks starting at address 0". Ignore ILLEGAL REQUEST in the event * that the command is not supported by the device. */ xs = scsi_xs_get(link, flags); if (xs == NULL) { SC_DEBUG(link, SDEV_DB1, ("cache sync failed to get xs\n")); return EIO; } cmd = (struct scsi_synchronize_cache *)xs->cmd; cmd->opcode = SYNCHRONIZE_CACHE; xs->cmdlen = sizeof(*cmd); xs->timeout = 100000; SET(xs->flags, SCSI_IGNORE_ILLEGAL_REQUEST); error = scsi_xs_sync(xs); scsi_xs_put(xs); if (error) SC_DEBUG(link, SDEV_DB1, ("cache sync failed\n")); else CLR(sc->flags, SDF_DIRTY); return error; }