/* $NetBSD: sd.c,v 1.336 2024/02/24 22:06:49 mlelstv 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 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.336 2024/02/24 22:06:49 mlelstv Exp $"); #ifdef _KERNEL_OPT #include "opt_scsi.h" #endif #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 #include #define SDUNIT(dev) DISKUNIT(dev) #define SDPART(dev) DISKPART(dev) #define SDMINOR(unit, part) DISKMINOR(unit, part) #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) #define SD_DEFAULT_BLKSIZE 512 static void sdminphys(struct buf *); static void sdstart(struct scsipi_periph *); static void sdrestart(void *); static void sddone(struct scsipi_xfer *, int); static bool sd_suspend(device_t, const pmf_qual_t *); static bool sd_shutdown(device_t, int); static int sd_interpret_sense(struct scsipi_xfer *); static int sd_diskstart(device_t, struct buf *); static int sd_dumpblocks(device_t, void *, daddr_t, int); static void sd_iosize(device_t, int *); static int sd_lastclose(device_t); static int sd_firstopen(device_t, dev_t, int, int); static void sd_label(device_t, struct disklabel *); static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, int, int *); static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, int); static int sd_validate_blksize(struct scsipi_periph *, int); static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, int); static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, int); static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, int); static int sd_flush(struct sd_softc *, int); static int sd_getcache(struct sd_softc *, int *); static int sd_setcache(struct sd_softc *, int); static int sdmatch(device_t, cfdata_t, void *); static void sdattach(device_t, device_t, void *); static int sddetach(device_t, int); static void sd_set_geometry(struct sd_softc *); CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); extern struct cfdriver sd_cd; static const struct scsipi_inquiry_pattern sd_patterns[] = { {T_DIRECT, T_FIXED, "", "", ""}, {T_DIRECT, T_REMOV, "", "", ""}, {T_OPTICAL, T_FIXED, "", "", ""}, {T_OPTICAL, T_REMOV, "", "", ""}, {T_SIMPLE_DIRECT, T_FIXED, "", "", ""}, {T_SIMPLE_DIRECT, T_REMOV, "", "", ""}, }; static dev_type_open(sdopen); static dev_type_close(sdclose); static dev_type_read(sdread); static dev_type_write(sdwrite); static dev_type_ioctl(sdioctl); static dev_type_strategy(sdstrategy); static dev_type_dump(sddump); static dev_type_size(sdsize); const struct bdevsw sd_bdevsw = { .d_open = sdopen, .d_close = sdclose, .d_strategy = sdstrategy, .d_ioctl = sdioctl, .d_dump = sddump, .d_psize = sdsize, .d_discard = nodiscard, .d_cfdriver = &sd_cd, .d_devtounit = disklabel_dev_unit, .d_flag = D_DISK | D_MPSAFE }; const struct cdevsw sd_cdevsw = { .d_open = sdopen, .d_close = sdclose, .d_read = sdread, .d_write = sdwrite, .d_ioctl = sdioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = nommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_cfdriver = &sd_cd, .d_devtounit = disklabel_dev_unit, .d_flag = D_DISK | D_MPSAFE }; static const struct dkdriver sddkdriver = { .d_open = sdopen, .d_close = sdclose, .d_strategy = sdstrategy, .d_minphys = sdminphys, .d_diskstart = sd_diskstart, .d_dumpblocks = sd_dumpblocks, .d_iosize = sd_iosize, .d_firstopen = sd_firstopen, .d_lastclose = sd_lastclose, .d_label = sd_label, }; static const struct scsipi_periphsw sd_switch = { sd_interpret_sense, /* check our error handler first */ sdstart, /* have a queue, served by this */ NULL, /* have no async handler */ sddone, /* deal with stats at interrupt time */ }; struct sd_mode_sense_data { /* * XXX * We are not going to parse this as-is -- it just has to be large * enough. */ union { struct scsi_mode_parameter_header_6 small; struct scsi_mode_parameter_header_10 big; } header; struct scsi_general_block_descriptor blk_desc; union scsi_disk_pages pages; }; /* * The routine called by the low level scsi routine when it discovers * A device suitable for this driver */ static int sdmatch(device_t parent, cfdata_t match, void *aux) { struct scsipibus_attach_args *sa = aux; int priority; (void)scsipi_inqmatch(&sa->sa_inqbuf, sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), sizeof(sd_patterns[0]), &priority); return (priority); } /* * Attach routine common to atapi & scsi. */ static void sdattach(device_t parent, device_t self, void *aux) { struct sd_softc *sd = device_private(self); struct dk_softc *dksc = &sd->sc_dksc; struct scsipibus_attach_args *sa = aux; struct scsipi_periph *periph = sa->sa_periph; int error, result, dtype; struct disk_parms *dp = &sd->params; char pbuf[9]; SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); sd->type = (sa->sa_inqbuf.type & SID_TYPE); memcpy(sd->name, sa->sa_inqbuf.product, uimin(16, sizeof(sd->name))); memcpy(sd->typename, sa->sa_inqbuf.product, uimin(16, sizeof(sd->typename))); if (sd->type == T_SIMPLE_DIRECT) periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) { case SCSIPI_BUSTYPE_SCSI: dtype = DKTYPE_SCSI; if (periph->periph_version == 0) sd->flags |= SDF_ANCIENT; break; case SCSIPI_BUSTYPE_ATAPI: dtype = DKTYPE_ATAPI; break; default: dtype = DKTYPE_UNKNOWN; break; } /* Initialize dk and disk structure. */ dk_init(dksc, self, dtype); disk_init(&dksc->sc_dkdev, dksc->sc_xname, &sddkdriver); /* Attach dk and disk subsystems */ dk_attach(dksc); disk_attach(&dksc->sc_dkdev); bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); callout_init(&sd->sc_callout, 0); /* * Store information needed to contact our base driver */ sd->sc_periph = periph; periph->periph_dev = dksc->sc_dev; periph->periph_switch = &sd_switch; /* * Increase our openings to the maximum-per-periph * supported by the adapter. This will either be * clamped down or grown by the adapter if necessary. */ periph->periph_openings = SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); periph->periph_flags |= PERIPH_GROW_OPENINGS; /* * Use the subdriver to request information regarding the drive. */ aprint_naive("\n"); aprint_normal("\n"); if (periph->periph_quirks & PQUIRK_START) (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); error = scsipi_test_unit_ready(periph, XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); if (error) result = SDGP_RESULT_OFFLINE; else result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); aprint_normal_dev(dksc->sc_dev, ""); switch (result) { case SDGP_RESULT_OK: format_bytes(pbuf, sizeof(pbuf), (u_int64_t)dp->disksize * dp->blksize); aprint_normal( "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, (unsigned long long)dp->disksize); break; case SDGP_RESULT_OFFLINE: aprint_normal("drive offline"); break; case SDGP_RESULT_UNFORMATTED: aprint_normal("unformatted media"); break; #ifdef DIAGNOSTIC default: panic("sdattach: unknown result from get_parms"); break; #endif } aprint_normal("\n"); /* Discover wedges on this disk if it is online */ if (result == SDGP_RESULT_OK) dkwedge_discover(&dksc->sc_dkdev); /* * 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 hooks at the "leaves" of the device tree * are run, first (thus guaranteeing that our hook runs before * our ancestors'). */ if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) aprint_error_dev(self, "couldn't establish power handler\n"); } static int sddetach(device_t self, int flags) { struct sd_softc *sd = device_private(self); struct dk_softc *dksc = &sd->sc_dksc; struct scsipi_periph *periph = sd->sc_periph; struct scsipi_channel *chan = periph->periph_channel; int bmaj, cmaj, i, mn, rc; if ((rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags)) != 0) return rc; /* locate the major number */ bmaj = bdevsw_lookup_major(&sd_bdevsw); cmaj = cdevsw_lookup_major(&sd_cdevsw); /* Nuke the vnodes for any open instances */ for (i = 0; i < MAXPARTITIONS; i++) { mn = SDMINOR(device_unit(self), i); vdevgone(bmaj, mn, mn, VBLK); vdevgone(cmaj, mn, mn, VCHR); } /* kill any pending restart */ callout_halt(&sd->sc_callout, NULL); dk_drain(dksc); /* Kill off any pending commands. */ mutex_enter(chan_mtx(chan)); scsipi_kill_pending(periph); mutex_exit(chan_mtx(chan)); bufq_free(dksc->sc_bufq); /* Delete all of our wedges. */ dkwedge_delall(&dksc->sc_dkdev); /* Detach from the disk list. */ disk_detach(&dksc->sc_dkdev); disk_destroy(&dksc->sc_dkdev); dk_detach(dksc); callout_destroy(&sd->sc_callout); pmf_device_deregister(self); return (0); } /* * Serialized by caller */ static int sd_firstopen(device_t self, dev_t dev, int flag, int fmt) { struct sd_softc *sd = device_private(self); struct scsipi_periph *periph = sd->sc_periph; struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; int error, silent; int part, removable; part = SDPART(dev); error = scsipi_adapter_addref(adapt); if (error) return error; if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) silent = XS_CTL_SILENT; else silent = 0; /* Check that it is still responding and ok. */ error = scsipi_test_unit_ready(periph, XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | silent); /* * Start the pack spinning if necessary. Always allow the * raw partition to be opened, for raw IOCTLs. Data transfers * will check for SDEV_MEDIA_LOADED. */ if (error == EIO) { error = scsipi_start(periph, SSS_START, silent); if (error == EINVAL) error = EIO; } if (error) goto bad; removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; if (removable) { /* Lock the pack in. */ error = scsipi_prevent(periph, SPAMR_PREVENT_DT, XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT); if (error) goto bad; } if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { int param_error; /* * 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. */ param_error = sd_get_parms(sd, &sd->params, 0); if (param_error == SDGP_RESULT_OFFLINE) { error = ENXIO; goto bad2; } periph->periph_flags |= PERIPH_MEDIA_LOADED; SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); } periph->periph_flags |= PERIPH_OPEN; return 0; bad2: if (removable) scsipi_prevent(periph, SPAMR_ALLOW, XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT); bad: scsipi_adapter_delref(adapt); return error; } /* * open the device. Make sure the partition info is a up-to-date as can be. */ static int sdopen(dev_t dev, int flag, int fmt, struct lwp *l) { struct sd_softc *sd; struct dk_softc *dksc; struct scsipi_periph *periph; int unit, part; int error; unit = SDUNIT(dev); sd = device_lookup_private(&sd_cd, unit); if (sd == NULL) return (ENXIO); dksc = &sd->sc_dksc; if (!device_is_active(dksc->sc_dev)) return (ENODEV); periph = sd->sc_periph; part = SDPART(dev); SC_DEBUG(periph, SCSIPI_DB1, ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, sd_cd.cd_ndevs, SDPART(dev))); /* * If any partition is open, but the disk has been invalidated, * disallow further opens of non-raw partition */ if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == PERIPH_OPEN) { if (part != RAW_PART || fmt != S_IFCHR) return EIO; } error = dk_open(dksc, dev, flag, fmt, l); SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); return error; } /* * Serialized by caller */ static int sd_lastclose(device_t self) { struct sd_softc *sd = device_private(self); struct dk_softc *dksc = &sd->sc_dksc; struct scsipi_periph *periph = sd->sc_periph; struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; /* * If the disk cache needs flushing, and the disk supports * it, do it now. */ if ((sd->flags & SDF_DIRTY) != 0) { if (sd_flush(sd, 0)) { aprint_error_dev(dksc->sc_dev, "cache synchronization failed\n"); sd->flags &= ~SDF_FLUSHING; } else sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); } scsipi_wait_drain(periph); if (periph->periph_flags & PERIPH_REMOVABLE) scsipi_prevent(periph, SPAMR_ALLOW, XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_NOT_READY | XS_CTL_SILENT); periph->periph_flags &= ~PERIPH_OPEN; scsipi_wait_drain(periph); scsipi_adapter_delref(adapt); return 0; } /* * close the device.. only called if we are the LAST occurrence of an open * device. Convenient now but usually a pain. */ static int sdclose(dev_t dev, int flag, int fmt, struct lwp *l) { struct sd_softc *sd; struct dk_softc *dksc; int unit; unit = SDUNIT(dev); sd = device_lookup_private(&sd_cd, unit); dksc = &sd->sc_dksc; return dk_close(dksc, dev, flag, fmt, l); } /* * 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. */ static void sdstrategy(struct buf *bp) { struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); struct dk_softc *dksc = &sd->sc_dksc; struct scsipi_periph *periph = sd->sc_periph; SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); SC_DEBUG(sd->sc_periph, SCSIPI_DB1, ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); /* * If the device has been made invalid, error out */ if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || !device_is_active(dksc->sc_dev)) { if (periph->periph_flags & PERIPH_OPEN) bp->b_error = EIO; else bp->b_error = ENODEV; bp->b_resid = bp->b_bcount; biodone(bp); return; } dk_strategy(dksc, bp); } /* * Issue single I/O command * * Called from dk_start and implicitly from dk_strategy */ static int sd_diskstart(device_t dev, struct buf *bp) { struct sd_softc *sd = device_private(dev); struct scsipi_periph *periph = sd->sc_periph; struct scsipi_channel *chan = periph->periph_channel; struct scsipi_rw_16 cmd16; struct scsipi_rw_10 cmd_big; struct scsi_rw_6 cmd_small; struct scsipi_generic *cmdp; struct scsipi_xfer *xs; int error, flags, nblks, cmdlen; int cdb_flags; bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); mutex_enter(chan_mtx(chan)); if (periph->periph_active >= periph->periph_openings) { error = EAGAIN; goto out; } /* * 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 (periph->periph_flags & PERIPH_WAITING) { periph->periph_flags &= ~PERIPH_WAITING; cv_broadcast(periph_cv_periph(periph)); error = EAGAIN; goto out; } /* * If the device has become invalid, abort all the * reads and writes until all files have been closed and * re-opened. */ if (__predict_false( (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { error = EIO; goto out; } /* * Mark the disk dirty so that the cache will be * flushed on close. */ if ((bp->b_flags & B_READ) == 0) sd->flags |= SDF_DIRTY; if (sd->params.blksize == DEV_BSIZE) nblks = bp->b_bcount >> DEV_BSHIFT; else nblks = howmany(bp->b_bcount, sd->params.blksize); /* * Pass FUA and/or DPO if requested. Must be done before CDB * selection, as 6-byte CDB doesn't support the flags. */ cdb_flags = 0; if (havefua) { if (bp->b_flags & B_MEDIA_FUA) cdb_flags |= SRWB_FUA; if (bp->b_flags & B_MEDIA_DPO) cdb_flags |= SRWB_DPO; } /* * Fill out the scsi command. Use the smallest CDB possible * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, * need to use 10-byte or bigger, as the 6-byte doesn't support * the flags. */ if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && ((nblks & 0xff) == nblks) && !(periph->periph_quirks & PQUIRK_ONLYBIG) && !cdb_flags) { /* 6-byte CDB */ memset(&cmd_small, 0, sizeof(cmd_small)); cmd_small.opcode = (bp->b_flags & B_READ) ? SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; _lto3b(bp->b_rawblkno, cmd_small.addr); cmd_small.length = nblks & 0xff; cmdlen = sizeof(cmd_small); cmdp = (struct scsipi_generic *)&cmd_small; } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { /* 10-byte CDB */ memset(&cmd_big, 0, sizeof(cmd_big)); cmd_big.opcode = (bp->b_flags & B_READ) ? READ_10 : WRITE_10; _lto4b(bp->b_rawblkno, cmd_big.addr); _lto2b(nblks, cmd_big.length); cmdlen = sizeof(cmd_big); cmdp = (struct scsipi_generic *)&cmd_big; } else { /* 16-byte CDB */ memset(&cmd16, 0, sizeof(cmd16)); cmd16.opcode = (bp->b_flags & B_READ) ? READ_16 : WRITE_16; _lto8b(bp->b_rawblkno, cmd16.addr); _lto4b(nblks, cmd16.length); cmdlen = sizeof(cmd16); cmdp = (struct scsipi_generic *)&cmd16; } if (cdb_flags) cmdp->bytes[0] = cdb_flags; /* * Figure out what flags to use. */ flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; if (bp->b_flags & B_READ) flags |= XS_CTL_DATA_IN; else flags |= XS_CTL_DATA_OUT; /* * Call the routine that chats with the adapter. * Note: we cannot sleep as we may be an interrupt */ xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, (u_char *)bp->b_data, bp->b_bcount, SDRETRIES, SD_IO_TIMEOUT, bp, flags); if (__predict_false(xs == NULL)) { /* * out of memory. Keep this buffer in the queue, and * retry later. */ callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); error = EAGAIN; goto out; } error = scsipi_execute_xs(xs); /* with a scsipi_xfer preallocated, scsipi_command can't fail */ KASSERT(error == 0); out: mutex_exit(chan_mtx(chan)); return error; } /* * Recover I/O request after memory shortage * * Called from callout */ static void sdrestart(void *v) { struct sd_softc *sd = v; struct dk_softc *dksc = &sd->sc_dksc; dk_start(dksc, NULL); } /* * Recover I/O request after memory shortage * * Called from scsipi midlayer when resources have been freed * with channel lock held */ static void sdstart(struct scsipi_periph *periph) { struct sd_softc *sd = device_private(periph->periph_dev); struct dk_softc *dksc = &sd->sc_dksc; struct scsipi_channel *chan = periph->periph_channel; /* * release channel lock as dk_start may need to acquire * other locks * * sdstart is called from scsipi_put_xs and all its callers * release the lock afterwards. So releasing it here * doesn't matter. */ mutex_exit(chan_mtx(chan)); dk_start(dksc, NULL); mutex_enter(chan_mtx(chan)); } static void sddone(struct scsipi_xfer *xs, int error) { struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); struct dk_softc *dksc = &sd->sc_dksc; struct buf *bp = xs->bp; if (sd->flags & SDF_FLUSHING) { /* Flush completed, no longer dirty. */ sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); } if (bp) { bp->b_error = error; bp->b_resid = xs->resid; if (error) { /* on a read/write error bp->b_resid is zero, so fix */ bp->b_resid = bp->b_bcount; } dk_done(dksc, bp); /* dk_start is called from scsipi_complete */ } } static void sdminphys(struct buf *bp) { struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); struct dk_softc *dksc = &sd->sc_dksc; long xmax; /* * 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 ((sd->flags & SDF_ANCIENT) && ((sd->sc_periph->periph_flags & (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; if (bp->b_bcount > xmax) bp->b_bcount = xmax; } scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); } static void sd_iosize(device_t dev, int *count) { struct buf B; int bmaj; bmaj = bdevsw_lookup_major(&sd_bdevsw); B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); B.b_bcount = *count; sdminphys(&B); *count = B.b_bcount; } static int sdread(dev_t dev, struct uio *uio, int ioflag) { return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); } static int sdwrite(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 */ static int sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) { struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); struct dk_softc *dksc = &sd->sc_dksc; struct scsipi_periph *periph = sd->sc_periph; int part = SDPART(dev); int error; SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); /* * If the device is not valid, some IOCTLs can still be * handled on the raw partition. Check this here. */ if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && part != RAW_PART) return (EIO); switch (cmd) { case DIOCLOCK: if (periph->periph_flags & PERIPH_REMOVABLE) return (scsipi_prevent(periph, (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); else return (ENOTTY); case DIOCEJECT: if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) return (ENOTTY); if (*(int *)addr == 0) { int pmask = __BIT(part); /* * Don't force eject: check that we are the only * partition open. If so, unlock it. */ if (DK_BUSY(dksc, pmask) == 0) { error = scsipi_prevent(periph, SPAMR_ALLOW, XS_CTL_IGNORE_NOT_READY); if (error) return (error); } else { return (EBUSY); } } /* FALLTHROUGH */ case ODIOCEJECT: return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); case DIOCGCACHE: return (sd_getcache(sd, (int *) addr)); case DIOCSCACHE: if ((flag & FWRITE) == 0) return (EBADF); return (sd_setcache(sd, *(int *) addr)); case DIOCCACHESYNC: /* * XXX Do we really need to care about having a writable * file descriptor here? */ if ((flag & FWRITE) == 0) return (EBADF); if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { error = sd_flush(sd, 0); if (error) { sd->flags &= ~SDF_FLUSHING; return (error); } sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); } return (0); default: error = dk_ioctl(dksc, dev, cmd, addr, flag, l); if (error == ENOTTY) error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); return (error); } #ifdef DIAGNOSTIC panic("sdioctl: impossible"); #endif } static void sd_label(device_t self, struct disklabel *lp) { struct sd_softc *sd = device_private(self); strncpy(lp->d_typename, sd->name, 16); lp->d_rpm = sd->params.rot_rate; if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) lp->d_flags |= D_REMOVABLE; } static bool sd_shutdown(device_t self, int how) { struct sd_softc *sd = device_private(self); struct dk_softc *dksc = &sd->sc_dksc; /* * 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) { if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { aprint_error_dev(dksc->sc_dev, "cache synchronization failed\n"); sd->flags &= ~SDF_FLUSHING; } else sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); } return true; } static bool sd_suspend(device_t dv, const pmf_qual_t *qual) { return sd_shutdown(dv, boothowto); /* XXX no need to poll */ } /* * Check Errors */ static int sd_interpret_sense(struct scsipi_xfer *xs) { struct scsipi_periph *periph = xs->xs_periph; struct scsipi_channel *chan = periph->periph_channel; struct scsi_sense_data *sense = &xs->sense.scsi_sense; struct sd_softc *sd = device_private(periph->periph_dev); struct dk_softc *dksc = &sd->sc_dksc; int error, retval = EJUSTRETURN; /* * If the periph is already recovering, just do the normal * error processing. */ if (periph->periph_flags & PERIPH_RECOVERING) return (retval); /* * Ignore errors from accessing illegal fields (e.g. trying to * lock the door of a digicam, which doesn't have a door that * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. */ if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && sense->asc == 0x24 && sense->ascq == 0x00) { /* Illegal field in CDB */ if (!(xs->xs_control & XS_CTL_SILENT)) { scsipi_printaddr(periph); printf("no door lock\n"); } xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; return (retval); } /* * If the device is not open yet, let the generic code handle it. */ if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) return (retval); /* * If it isn't a extended or extended/deferred error, let * the generic code handle it. */ if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) return (retval); if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && sense->asc == 0x4) { if (sense->ascq == 0x01) { /* * Unit In The Process Of Becoming Ready. */ printf("%s: waiting for pack to spin up...\n", dksc->sc_xname); if (!callout_pending(&periph->periph_callout)) scsipi_periph_freeze(periph, 1); callout_reset(&periph->periph_callout, 5 * hz, scsipi_periph_timed_thaw, periph); retval = ERESTART; } else if (sense->ascq == 0x02) { printf("%s: pack is stopped, restarting...\n", dksc->sc_xname); mutex_enter(chan_mtx(chan)); periph->periph_flags |= PERIPH_RECOVERING; mutex_exit(chan_mtx(chan)); error = scsipi_start(periph, SSS_START, XS_CTL_URGENT|XS_CTL_HEAD_TAG| XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); if (error) { aprint_error_dev(dksc->sc_dev, "unable to restart pack\n"); retval = error; } else retval = ERESTART; mutex_enter(chan_mtx(chan)); periph->periph_flags &= ~PERIPH_RECOVERING; mutex_exit(chan_mtx(chan)); } } if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && sense->asc == 0x31 && sense->ascq == 0x00) { /* maybe for any asq ? */ /* Medium Format Corrupted */ retval = EFTYPE; } return (retval); } static int sdsize(dev_t dev) { struct sd_softc *sd; struct dk_softc *dksc; int unit; unit = SDUNIT(dev); sd = device_lookup_private(&sd_cd, unit); if (sd == NULL) return (-1); dksc = &sd->sc_dksc; if (!device_is_active(dksc->sc_dev)) return (-1); return dk_size(dksc, dev); } /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ static struct scsipi_xfer sx; /* * dump all of physical memory into the partition specified, starting * at offset 'dumplo' into the partition. */ static int sddump(dev_t dev, daddr_t blkno, void *va, size_t size) { struct sd_softc *sd; struct dk_softc *dksc; struct scsipi_periph *periph; int unit; unit = SDUNIT(dev); if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) return (ENXIO); dksc = &sd->sc_dksc; if (!device_is_active(dksc->sc_dev)) return (ENODEV); periph = sd->sc_periph; /* Make sure it was initialized. */ if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) return (ENXIO); return dk_dump(dksc, dev, blkno, va, size, 0); } static int sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) { struct sd_softc *sd = device_private(dev); struct dk_softc *dksc = &sd->sc_dksc; struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; struct scsipi_rw_10 cmd; /* write command */ struct scsipi_xfer *xs; /* ... convenience */ struct scsipi_periph *periph; struct scsipi_channel *chan; size_t sectorsize; periph = sd->sc_periph; chan = periph->periph_channel; sectorsize = dg->dg_secsize; xs = &sx; #ifndef SD_DUMP_NOT_TRUSTED /* * Fill out the scsi command */ memset(&cmd, 0, sizeof(cmd)); cmd.opcode = WRITE_10; _lto4b(blkno, cmd.addr); _lto2b(nblk, 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. */ memset(xs, 0, sizeof(sx)); xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | XS_CTL_DATA_OUT; xs->xs_status = 0; xs->xs_periph = periph; xs->xs_retries = SDRETRIES; xs->timeout = 10000; /* 10000 millisecs for a disk ! */ xs->cmd = (struct scsipi_generic *)&cmd; xs->cmdlen = sizeof(cmd); xs->resid = nblk * sectorsize; xs->error = XS_NOERROR; xs->bp = 0; xs->data = va; xs->datalen = nblk * sectorsize; callout_init(&xs->xs_callout, 0); /* * Pass all this info to the scsi driver. */ scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); if ((xs->xs_status & XS_STS_DONE) == 0 || xs->error != XS_NOERROR) return (EIO); #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 */ return (0); } static int sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, int page, int flags, int *big) { if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { *big = 1; return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, size + sizeof(struct scsi_mode_parameter_header_10), flags, SDRETRIES, 6000); } else { *big = 0; return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, size + sizeof(struct scsi_mode_parameter_header_6), flags, SDRETRIES, 6000); } } static int sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, int flags, int big) { if (big) { struct scsi_mode_parameter_header_10 *header = sense; _lto2b(0, header->data_length); return scsipi_mode_select_big(sd->sc_periph, byte2, sense, size + sizeof(struct scsi_mode_parameter_header_10), flags, SDRETRIES, 6000); } else { struct scsi_mode_parameter_header_6 *header = sense; header->data_length = 0; return scsipi_mode_select(sd->sc_periph, byte2, sense, size + sizeof(struct scsi_mode_parameter_header_6), flags, SDRETRIES, 6000); } } /* * sd_validate_blksize: * * Validate the block size. Print error if periph is specified, */ static int sd_validate_blksize(struct scsipi_periph *periph, int len) { if (len >= 256 && powerof2(len) && len <= 4096) { return 1; } if (periph) { scsipi_printaddr(periph); printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", !powerof2(len) ? "preposterous" : "unsupported", len, SD_DEFAULT_BLKSIZE); } return 0; } /* * sd_read_capacity: * * Find out from the device what its capacity is. */ static u_int64_t sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) { union { struct scsipi_read_capacity_10 cmd; struct scsipi_read_capacity_16 cmd16; } cmd; union { struct scsipi_read_capacity_10_data data; struct scsipi_read_capacity_16_data data16; } *datap; uint64_t rv; memset(&cmd, 0, sizeof(cmd)); cmd.cmd.opcode = READ_CAPACITY_10; /* * Don't allocate data buffer on stack; * The lower driver layer might use the same stack and * if it uses region which is in the same cacheline, * cache flush ops against the data buffer won't work properly. */ datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); if (datap == NULL) return 0; /* * If the command works, interpret the result as a 4 byte * number of blocks */ rv = 0; memset(datap, 0, sizeof(datap->data)); if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) goto out; if (_4btol(datap->data.addr) != 0xffffffff) { *blksize = _4btol(datap->data.length); rv = _4btol(datap->data.addr) + 1; goto out; } /* * Device is larger than can be reflected by READ CAPACITY (10). * Try READ CAPACITY (16). */ memset(&cmd, 0, sizeof(cmd)); cmd.cmd16.opcode = READ_CAPACITY_16; cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; _lto4b(sizeof(datap->data16), cmd.cmd16.len); memset(datap, 0, sizeof(datap->data16)); if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) goto out; *blksize = _4btol(datap->data16.length); rv = _8btol(datap->data16.addr) + 1; out: free(datap, M_TEMP); return rv; } static int sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) { struct { struct scsi_mode_parameter_header_6 header; /* no block descriptor */ u_int8_t pg_code; /* page code (should be 6) */ u_int8_t pg_length; /* page length (should be 11) */ u_int8_t wcd; /* bit0: cache disable */ u_int8_t lbs[2]; /* logical block size */ u_int8_t size[5]; /* number of log. blocks */ u_int8_t pp; /* power/performance */ u_int8_t flags; u_int8_t resvd; } scsipi_sense; u_int64_t blocks; int error, blksize; /* * sd_read_capacity (ie "read capacity") and mode sense page 6 * give the same information. Do both for now, and check * for consistency. * XXX probably differs for removable media */ dp->blksize = SD_DEFAULT_BLKSIZE; if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, &scsipi_sense.header, sizeof(scsipi_sense), flags, SDRETRIES, 6000); if (error != 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ dp->blksize = blksize; if (!sd_validate_blksize(NULL, dp->blksize)) dp->blksize = _2btol(scsipi_sense.lbs); if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) dp->blksize = SD_DEFAULT_BLKSIZE; /* * Create a pseudo-geometry. */ dp->heads = 64; dp->sectors = 32; dp->cyls = blocks / (dp->heads * dp->sectors); dp->disksize = _5btol(scsipi_sense.size); if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { printf("RBC size: mode sense=%llu, get cap=%llu\n", (unsigned long long)dp->disksize, (unsigned long long)blocks); dp->disksize = blocks; } dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; return (SDGP_RESULT_OK); } /* * Get the scsi driver to send a full inquiry to the * device and use the * results to fill out the disk parameter structure. */ static int sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) { u_int64_t blocks; int error, blksize; #if 0 int i; u_int8_t *p; #endif dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, flags); if (blocks == 0) { struct scsipi_read_format_capacities cmd; struct { struct scsipi_capacity_list_header header; struct scsipi_capacity_descriptor desc; } __packed data; memset(&cmd, 0, sizeof(cmd)); memset(&data, 0, sizeof(data)); cmd.opcode = READ_FORMAT_CAPACITIES; _lto2b(sizeof(data), cmd.length); error = scsipi_command(sd->sc_periph, (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), SDRETRIES, 20000, NULL, flags | XS_CTL_DATA_IN); if (error == EFTYPE) { /* Medium Format Corrupted, handle as not formatted */ return (SDGP_RESULT_UNFORMATTED); } if (error || data.header.length == 0) return (SDGP_RESULT_OFFLINE); #if 0 printf("rfc: length=%d\n", data.header.length); printf("rfc result:"); for (i = sizeof(struct scsipi_capacity_list_header) + data.header.length, p = (void *)&data; i; i--, p++) printf(" %02x", *p); printf("\n"); #endif switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { case SCSIPI_CAP_DESC_CODE_RESERVED: case SCSIPI_CAP_DESC_CODE_FORMATTED: break; case SCSIPI_CAP_DESC_CODE_UNFORMATTED: return (SDGP_RESULT_UNFORMATTED); case SCSIPI_CAP_DESC_CODE_NONE: return (SDGP_RESULT_OFFLINE); } dp->disksize = blocks = _4btol(data.desc.nblks); if (blocks == 0) return (SDGP_RESULT_OFFLINE); /* XXX? */ blksize = _3btol(data.desc.blklen); } else if (!sd_validate_blksize(NULL, blksize)) { struct sd_mode_sense_data scsipi_sense; int big, bsize; struct scsi_general_block_descriptor *bdesc; memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, 0, &scsipi_sense, sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); if (!error) { if (big) { bdesc = (void *)(&scsipi_sense.header.big + 1); bsize = _2btol(scsipi_sense.header.big.blk_desc_len); } else { bdesc = (void *)(&scsipi_sense.header.small + 1); bsize = scsipi_sense.header.small.blk_desc_len; } #if 0 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); printf("page 0 bsize=%d\n", bsize); printf("page 0 ok\n"); #endif if (bsize >= 8) { blksize = _3btol(bdesc->blklen); } } } if (!sd_validate_blksize(sd->sc_periph, blksize)) blksize = SD_DEFAULT_BLKSIZE; dp->blksize = blksize; dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; return (0); } static int sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) { struct sd_mode_sense_data scsipi_sense; int error; int big, byte2; size_t poffset; union scsi_disk_pages *pages; byte2 = SMS_DBD; again: memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, byte2, &scsipi_sense, (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + sizeof(scsipi_sense.pages.rigid_geometry), 4, flags | XS_CTL_SILENT, &big); if (error) { if (byte2 == SMS_DBD) { /* No result; try once more with DBD off */ byte2 = 0; goto again; } return (error); } if (big) { poffset = sizeof scsipi_sense.header.big; poffset += _2btol(scsipi_sense.header.big.blk_desc_len); } else { poffset = sizeof scsipi_sense.header.small; poffset += scsipi_sense.header.small.blk_desc_len; } if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) return ERESTART; pages = (void *)((u_long)&scsipi_sense + poffset); #if 0 { size_t i; u_int8_t *p; printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); } #endif if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) return (ERESTART); SC_DEBUG(sd->sc_periph, SCSIPI_DB3, ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", _3btol(pages->rigid_geometry.ncyl), pages->rigid_geometry.nheads, _2btol(pages->rigid_geometry.st_cyl_wp), _2btol(pages->rigid_geometry.st_cyl_rwc), _2btol(pages->rigid_geometry.land_zone))); /* * KLUDGE!! (for zone recorded disks) * give a number of sectors so that sec * trks * cyls * is <= disk_size * can lead to wasted space! THINK ABOUT THIS ! */ dp->heads = pages->rigid_geometry.nheads; dp->cyls = _3btol(pages->rigid_geometry.ncyl); if (dp->heads == 0 || dp->cyls == 0) return (ERESTART); dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ dp->rot_rate = _2btol(pages->rigid_geometry.rpm); if (dp->rot_rate == 0) dp->rot_rate = 3600; #if 0 printf("page 4 ok\n"); #endif return (0); } static int sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) { struct sd_mode_sense_data scsipi_sense; int error; int big, byte2; size_t poffset; union scsi_disk_pages *pages; byte2 = SMS_DBD; again: memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, 0, &scsipi_sense, (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + sizeof(scsipi_sense.pages.flex_geometry), 5, flags | XS_CTL_SILENT, &big); if (error) { if (byte2 == SMS_DBD) { /* No result; try once more with DBD off */ byte2 = 0; goto again; } return (error); } if (big) { poffset = sizeof scsipi_sense.header.big; poffset += _2btol(scsipi_sense.header.big.blk_desc_len); } else { poffset = sizeof scsipi_sense.header.small; poffset += scsipi_sense.header.small.blk_desc_len; } if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) return ERESTART; pages = (void *)((u_long)&scsipi_sense + poffset); #if 0 { size_t i; u_int8_t *p; printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); } #endif if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) return (ERESTART); SC_DEBUG(sd->sc_periph, SCSIPI_DB3, ("%d cyls, %d heads, %d sec, %d bytes/sec\n", _3btol(pages->flex_geometry.ncyl), pages->flex_geometry.nheads, pages->flex_geometry.ph_sec_tr, _2btol(pages->flex_geometry.bytes_s))); dp->heads = pages->flex_geometry.nheads; dp->cyls = _2btol(pages->flex_geometry.ncyl); dp->sectors = pages->flex_geometry.ph_sec_tr; if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) return (ERESTART); dp->rot_rate = _2btol(pages->rigid_geometry.rpm); if (dp->rot_rate == 0) dp->rot_rate = 3600; #if 0 printf("page 5 ok\n"); #endif return (0); } static int sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) { struct dk_softc *dksc = &sd->sc_dksc; int error; /* * If offline, the SDEV_MEDIA_LOADED flag will be * cleared by the caller if necessary. */ if (sd->type == T_SIMPLE_DIRECT) { error = sd_get_simplifiedparms(sd, dp, flags); if (!error) goto setprops; return (error); } error = sd_get_capacity(sd, dp, flags); if (error) return (error); if (sd->type == T_OPTICAL) goto page0; if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { if (!sd_get_parms_page5(sd, dp, flags) || !sd_get_parms_page4(sd, dp, flags)) goto setprops; } else { if (!sd_get_parms_page4(sd, dp, flags) || !sd_get_parms_page5(sd, dp, flags)) goto setprops; } page0: printf("%s: fabricating a geometry\n", dksc->sc_xname); /* Try calling driver's method for figuring out geometry. */ if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) (sd->sc_periph, dp, dp->disksize)) { /* * Use adaptec standard fictitious geometry * this depends on which controller (e.g. 1542C is * different. but we have to put SOMETHING here..) */ dp->heads = 64; dp->sectors = 32; dp->cyls = dp->disksize / (64 * 32); } dp->rot_rate = 3600; setprops: sd_set_geometry(sd); return (SDGP_RESULT_OK); } static int sd_flush(struct sd_softc *sd, int flags) { struct scsipi_periph *periph = sd->sc_periph; struct scsi_synchronize_cache_10 cmd; /* * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. * We issue with address 0 length 0, which should be * interpreted by the device as "all remaining blocks * starting at address 0". We ignore ILLEGAL REQUEST * in the event that the command is not supported by * the device, and poll for completion so that we know * that the cache has actually been flushed. * * Unless, that is, the device can't handle the SYNCHRONIZE CACHE * command, as indicated by our quirks flags. * * XXX What about older devices? */ if (periph->periph_version < 2 || (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) return (0); sd->flags |= SDF_FLUSHING; memset(&cmd, 0, sizeof(cmd)); cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); } static int sd_getcache(struct sd_softc *sd, int *bitsp) { struct scsipi_periph *periph = sd->sc_periph; struct sd_mode_sense_data scsipi_sense; int error, bits = 0; int big; union scsi_disk_pages *pages; uint8_t dev_spec; /* only SCSI-2 and later supported */ if (periph->periph_version < 2) return (EOPNOTSUPP); memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); if (error) return (error); if (big) { pages = (void *)(&scsipi_sense.header.big + 1); dev_spec = scsipi_sense.header.big.dev_spec; } else { pages = (void *)(&scsipi_sense.header.small + 1); dev_spec = scsipi_sense.header.small.dev_spec; } if ((pages->caching_params.flags & CACHING_RCD) == 0) bits |= DKCACHE_READ; if (pages->caching_params.flags & CACHING_WCE) bits |= DKCACHE_WRITE; if (pages->caching_params.pg_code & PGCODE_PS) bits |= DKCACHE_SAVE; /* * Support for FUA/DPO, defined starting with SCSI-2. Use only * if device claims to support it, according to the MODE SENSE. */ if (!(periph->periph_quirks & PQUIRK_NOFUA) && ISSET(dev_spec, SMH_DSP_DPOFUA)) bits |= DKCACHE_FUA | DKCACHE_DPO; memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, sizeof(scsipi_sense.pages.caching_params), SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); if (error == 0) { if (big) pages = (void *)(&scsipi_sense.header.big + 1); else pages = (void *)(&scsipi_sense.header.small + 1); if (pages->caching_params.flags & CACHING_RCD) bits |= DKCACHE_RCHANGE; if (pages->caching_params.flags & CACHING_WCE) bits |= DKCACHE_WCHANGE; } *bitsp = bits; return (0); } static int sd_setcache(struct sd_softc *sd, int bits) { struct scsipi_periph *periph = sd->sc_periph; struct sd_mode_sense_data scsipi_sense; int error; uint8_t oflags, byte2 = 0; int big; union scsi_disk_pages *pages; if (periph->periph_version < 2) return (EOPNOTSUPP); memset(&scsipi_sense, 0, sizeof(scsipi_sense)); error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); if (error) return (error); if (big) pages = (void *)(&scsipi_sense.header.big + 1); else pages = (void *)(&scsipi_sense.header.small + 1); oflags = pages->caching_params.flags; if (bits & DKCACHE_READ) pages->caching_params.flags &= ~CACHING_RCD; else pages->caching_params.flags |= CACHING_RCD; if (bits & DKCACHE_WRITE) pages->caching_params.flags |= CACHING_WCE; else pages->caching_params.flags &= ~CACHING_WCE; if (oflags == pages->caching_params.flags) return (0); pages->caching_params.pg_code &= PGCODE_MASK; if (bits & DKCACHE_SAVE) byte2 |= SMS_SP; return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, sizeof(struct scsi_mode_page_header) + pages->caching_params.pg_length, 0, big)); } static void sd_set_geometry(struct sd_softc *sd) { struct dk_softc *dksc = &sd->sc_dksc; struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; memset(dg, 0, sizeof(*dg)); dg->dg_secperunit = sd->params.disksize; dg->dg_secsize = sd->params.blksize; dg->dg_nsectors = sd->params.sectors; dg->dg_ntracks = sd->params.heads; dg->dg_ncylinders = sd->params.cyls; disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); }