/* $NetBSD: sd.c,v 1.63 1995/03/23 12:11:12 mycroft Exp $ */ /* * Copyright (c) 1994, 1995 Charles Hannum. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Charles Hannum. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Originally written by Julian Elischer (julian@dialix.oz.au) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DDB int Debugger(); #else /* DDB */ #define Debugger() #endif /* DDB */ #define SDOUTSTANDING 2 #define SDRETRIES 4 #define SDUNIT(dev) DISKUNIT(dev) #define SDPART(dev) DISKPART(dev) #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) struct sd_softc { struct device sc_dev; struct dkdevice sc_dk; int flags; #define SDF_LOCKED 0x01 #define SDF_WANTED 0x02 #define SDF_WLABEL 0x04 /* label is writable */ #define SDF_LABELLING 0x08 /* writing label */ struct scsi_link *sc_link; /* contains our targ, lun, etc. */ struct disk_parms { u_char heads; /* number of heads */ u_short cyls; /* number of cylinders */ u_char sectors; /* number of sectors/track */ int blksize; /* number of bytes/sector */ u_long disksize; /* total number sectors */ } params; struct buf buf_queue; }; int sdmatch __P((struct device *, void *, void *)); void sdattach __P((struct device *, struct device *, void *)); struct cfdriver sdcd = { NULL, "sd", sdmatch, sdattach, DV_DISK, sizeof(struct sd_softc) }; void sdgetdisklabel __P((struct sd_softc *)); int sd_get_parms __P((struct sd_softc *, int)); void sdstrategy __P((struct buf *)); void sdstart __P((struct sd_softc *)); struct dkdriver sddkdriver = { sdstrategy }; struct scsi_device sd_switch = { NULL, /* Use default error handler */ sdstart, /* have a queue, served by this */ NULL, /* have no async handler */ NULL, /* Use default 'done' routine */ }; struct scsi_inquiry_pattern sd_patterns[] = { {T_DIRECT, T_FIXED, "", "", ""}, {T_DIRECT, T_REMOV, "", "", ""}, {T_OPTICAL, T_FIXED, "", "", ""}, {T_OPTICAL, T_REMOV, "", "", ""}, }; int sdmatch(parent, match, aux) struct device *parent; void *match, *aux; { struct cfdata *cf = match; 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; { 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; sc_link->device = &sd_switch; sc_link->device_softc = sd; if (sc_link->openings > SDOUTSTANDING) sc_link->openings = SDOUTSTANDING; sd->sc_dk.dk_driver = &sddkdriver; #if !defined(i386) || defined(NEWCONFIG) dk_establish(&sd->sc_dk, &sd->sc_dev); #endif /* * Use the subdriver to request information regarding * the drive. We cannot use interrupts yet, so the * request must specify this. */ if (scsi_start(sd->sc_link, SSS_START, SCSI_AUTOCONF | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT) || sd_get_parms(sd, SCSI_AUTOCONF) != 0) printf(": drive offline\n"); else printf(": %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", dp->disksize / (1048576 / dp->blksize), dp->cyls, dp->heads, dp->sectors, dp->blksize); } int sdlockwait(sd) struct sd_softc *sd; { int error; while ((sd->flags & SDF_LOCKED) != 0) { sd->flags |= SDF_WANTED; if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) return error; } return 0; } void sdunlock(sd) struct sd_softc *sd; { sd->flags &= ~SDF_LOCKED; if ((sd->flags & SDF_WANTED) != 0) { sd->flags &= ~SDF_WANTED; wakeup(sd); } } /* * open the device. Make sure the partition info is a up-to-date as can be. */ int sdopen(dev, flag, fmt) dev_t dev; int flag, fmt; { int error; int unit, part; struct sd_softc *sd; struct scsi_link *sc_link; unit = SDUNIT(dev); if (unit >= sdcd.cd_ndevs) return ENXIO; sd = sdcd.cd_devs[unit]; if (!sd) return ENXIO; part = SDPART(dev); sc_link = sd->sc_link; SC_DEBUG(sc_link, SDEV_DB1, ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, sdcd.cd_ndevs, part)); if (error = sdlockwait(sd)) 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) return ENXIO; } else { sd->flags |= SDF_LOCKED; /* Check that it is still responding and ok. */ if (error = scsi_test_unit_ready(sc_link, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_IGNORE_NOT_READY)) goto bad3; /* Start the pack spinning if necessary. */ if (error = scsi_start(sc_link, SSS_START, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT)) goto bad3; sc_link->flags |= SDEV_OPEN; /* Lock the pack in. */ if (error = scsi_prevent(sc_link, PR_PREVENT, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE)) goto bad; if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { sc_link->flags |= SDEV_MEDIA_LOADED; /* Load the physical device parameters. */ if (sd_get_parms(sd, 0) != 0) { error = ENXIO; goto bad2; } SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded ")); /* Load the partition info if not already loaded. */ sdgetdisklabel(sd); SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel loaded ")); } sdunlock(sd); } #if 0 /* Check for read-only media. */ if ((flag & FWRITE) != 0 && (sd->flags & SDF_WRITEPROT) != 0) { error = EROFS; goto bad; } #endif /* 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")); 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); } 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) dev_t dev; int flag, fmt; { struct sd_softc *sd = sdcd.cd_devs[SDUNIT(dev)]; int part = SDPART(dev); int s; 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 we're closing the last partition, nobody else could be * holding the lock, so don't bother to check. */ sd->flags |= SDF_LOCKED; #if 0 s = splbio(); while (...) { sd->flags |= SDF_WAITING; if ((error = tsleep(sd, PRIBIO | PCATCH, "sdcls", 0)) != 0) return error; } splx(s); #endif scsi_prevent(sd->sc_link, PR_ALLOW, SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY); sd->sc_link->flags &= ~SDEV_OPEN; sdunlock(sd); } return 0; } /* * trim the size of the transfer if needed, called by physio * basically the smaller of our max and the scsi driver's * minphys (note we have no max) * * Trim buffer length if buffer-size is bigger than page size */ void sdminphys(bp) struct buf *bp; { register struct sd_softc *sd = sdcd.cd_devs[SDUNIT(bp->b_dev)]; (sd->sc_link->adapter->scsi_minphys) (bp); } /* * 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 = sdcd.cd_devs[SDUNIT(bp->b_dev)]; int opri; SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdstrategy ")); SC_DEBUG(sd->sc_link, SDEV_DB1, ("%d bytes @ blk %d\n", bp->b_bcount, bp->b_blkno)); sdminphys(bp); /* * If the device has been made invalid, error out */ if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) { bp->b_error = EIO; goto bad; } /* * If it's a null transfer, return immediatly */ if (bp->b_bcount == 0) goto done; /* * Do bounds checking, adjust transfer. if error, process. * If end of partition, just return. */ if (bounds_check_with_label(bp, &sd->sc_dk.dk_label, (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) goto done; opri = 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(opri); return; bad: bp->b_flags |= B_ERROR; done: /* * Correctly set the buf to indicate a completed xfer */ bp->b_resid = bp->b_bcount; biodone(bp); } /* * sdstart looks to see if there is a buf waiting for the device * and that the device is not already busy. If both are true, * It dequeues the buf and creates a scsi command to perform the * transfer in the buf. The transfer request will call 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(sd) register struct sd_softc *sd; { register struct scsi_link *sc_link = sd->sc_link; struct buf *bp = 0; struct buf *dp; struct scsi_rw_big cmd; int blkno, nblks; 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; 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 */ bzero(&cmd, sizeof(cmd)); cmd.opcode = (bp->b_flags & B_READ) ? READ_BIG : WRITE_BIG; cmd.addr_3 = (blkno & 0xff000000) >> 24; cmd.addr_2 = (blkno & 0xff0000) >> 16; cmd.addr_1 = (blkno & 0xff00) >> 8; cmd.addr_0 = blkno & 0xff; cmd.length2 = (nblks & 0xff00) >> 8; cmd.length1 = (nblks & 0xff); /* * Call the routine that chats with the adapter. * Note: we cannot sleep as we may be an interrupt */ if (scsi_scsi_cmd(sc_link, (struct scsi_generic *)&cmd, sizeof(cmd), (u_char *)bp->b_data, bp->b_bcount, SDRETRIES, 10000, bp, SCSI_NOSLEEP | ((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT))) printf("%s: not queued", sd->sc_dev.dv_xname); } } /* * 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 = sdcd.cd_devs[SDUNIT(dev)]; int error; SC_DEBUG(sd->sc_link, SDEV_DB2, ("sdioctl 0x%lx ", cmd)); /* * If the device is not valid.. abandon ship */ if ((sd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) return EIO; switch (cmd) { case DIOCGDINFO: *(struct disklabel *)addr = sd->sc_dk.dk_label; return 0; case DIOCGPART: ((struct partinfo *)addr)->disklab = &sd->sc_dk.dk_label; ((struct partinfo *)addr)->part = &sd->sc_dk.dk_label.d_partitions[SDPART(dev)]; return 0; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) return EBADF; if (error = sdlockwait(sd)) return error; sd->flags |= SDF_LOCKED | SDF_LABELLING; error = setdisklabel(&sd->sc_dk.dk_label, (struct disklabel *)addr, /*sd->sc_dk.dk_openmask : */0, &sd->sc_dk.dk_cpulabel); if (error == 0) { if (cmd == DIOCWDINFO) error = writedisklabel(SDLABELDEV(dev), sdstrategy, &sd->sc_dk.dk_label, &sd->sc_dk.dk_cpulabel); } sd->flags &= ~SDF_LABELLING; sdunlock(sd); return error; case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; if (*(int *)addr) sd->flags |= SDF_WLABEL; else sd->flags &= ~SDF_WLABEL; return 0; default: if (SDPART(dev) != RAW_PART) return ENOTTY; return scsi_do_ioctl(sd->sc_link, dev, cmd, addr, flag, p); } #ifdef DIAGNOSTIC panic("sdioctl: impossible"); #endif } /* * Load the label information on the named device */ void sdgetdisklabel(sd) struct sd_softc *sd; { char *errstring; bzero(&sd->sc_dk.dk_label, sizeof(struct disklabel)); bzero(&sd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); sd->sc_dk.dk_label.d_secsize = sd->params.blksize; sd->sc_dk.dk_label.d_ntracks = sd->params.heads; sd->sc_dk.dk_label.d_nsectors = sd->params.sectors; sd->sc_dk.dk_label.d_ncylinders = sd->params.cyls; sd->sc_dk.dk_label.d_secpercyl = sd->sc_dk.dk_label.d_ntracks * sd->sc_dk.dk_label.d_nsectors; if (sd->sc_dk.dk_label.d_secpercyl == 0) { sd->sc_dk.dk_label.d_secpercyl = 100; /* as long as it's not 0 - readdisklabel divides by it (?) */ } strncpy(sd->sc_dk.dk_label.d_typename, "SCSI disk", 16); sd->sc_dk.dk_label.d_type = DTYPE_SCSI; strncpy(sd->sc_dk.dk_label.d_packname, "fictitious", 16); sd->sc_dk.dk_label.d_secperunit = sd->params.disksize; sd->sc_dk.dk_label.d_rpm = 3600; sd->sc_dk.dk_label.d_interleave = 1; sd->sc_dk.dk_label.d_flags = 0; sd->sc_dk.dk_label.d_partitions[RAW_PART].p_offset = 0; sd->sc_dk.dk_label.d_partitions[RAW_PART].p_size = sd->sc_dk.dk_label.d_secperunit * (sd->sc_dk.dk_label.d_secsize / DEV_BSIZE); sd->sc_dk.dk_label.d_partitions[RAW_PART].p_fstype = FS_UNUSED; sd->sc_dk.dk_label.d_npartitions = RAW_PART + 1; sd->sc_dk.dk_label.d_magic = DISKMAGIC; sd->sc_dk.dk_label.d_magic2 = DISKMAGIC; sd->sc_dk.dk_label.d_checksum = dkcksum(&sd->sc_dk.dk_label); /* * Call the generic disklabel extraction routine */ if (errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), sdstrategy, &sd->sc_dk.dk_label, &sd->sc_dk.dk_cpulabel)) { printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); return; } } /* * Find out from the device what it's capacity is */ u_long sd_size(sd, flags) struct sd_softc *sd; int flags; { struct scsi_read_cap_data rdcap; struct scsi_read_capacity scsi_cmd; u_long size; /* * make up a scsi command and ask the scsi driver to do * it for you. */ bzero(&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.opcode = READ_CAPACITY; /* * If the command works, interpret the result as a 4 byte * number of blocks */ if (scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&rdcap, sizeof(rdcap), SDRETRIES, 2000, NULL, flags | SCSI_DATA_IN) != 0) return 0; size = (rdcap.addr_3 << 24) + (rdcap.addr_2 << 16) + (rdcap.addr_1 << 8) + rdcap.addr_0 + 1; return size; } /* * Tell the device to map out a defective block */ int sd_reassign_blocks(sd, block) struct sd_softc *sd; u_long block; { struct scsi_reassign_blocks scsi_cmd; struct scsi_reassign_blocks_data rbdata; bzero(&scsi_cmd, sizeof(scsi_cmd)); bzero(&rbdata, sizeof(rbdata)); scsi_cmd.opcode = REASSIGN_BLOCKS; rbdata.length_msb = 0; rbdata.length_lsb = sizeof(rbdata.defect_descriptor[0]); rbdata.defect_descriptor[0].dlbaddr_3 = ((block >> 24) & 0xff); rbdata.defect_descriptor[0].dlbaddr_2 = ((block >> 16) & 0xff); rbdata.defect_descriptor[0].dlbaddr_1 = ((block >> 8) & 0xff); rbdata.defect_descriptor[0].dlbaddr_0 = ((block) & 0xff); return scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&rbdata, sizeof(rbdata), SDRETRIES, 5000, NULL, SCSI_DATA_OUT); } #define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 ) /* * Get the scsi driver to send a full inquiry to the * device and use the * results to fill out the disk parameter structure. */ int sd_get_parms(sd, flags) struct sd_softc *sd; int flags; { struct disk_parms *dp = &sd->params; struct scsi_mode_sense scsi_cmd; struct scsi_mode_sense_data { struct scsi_mode_header header; struct scsi_blk_desc blk_desc; union disk_pages pages; } scsi_sense; u_long sectors; /* * do a "mode sense page 4" */ bzero(&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.opcode = MODE_SENSE; scsi_cmd.page = 4; scsi_cmd.length = 0x20; /* * If the command worked, use the results to fill out * the parameter structure */ if (scsi_scsi_cmd(sd->sc_link, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&scsi_sense, sizeof(scsi_sense), SDRETRIES, 6000, NULL, flags | SCSI_DATA_IN) != 0) { printf("%s: could not mode sense (4)", sd->sc_dev.dv_xname); fake_it: printf("; using fictitious geometry\n"); /* * use adaptec standard fictitious geometry * this depends on which controller (e.g. 1542C is * different. but we have to put SOMETHING here..) */ sectors = sd_size(sd, flags); dp->heads = 64; dp->sectors = 32; dp->cyls = sectors / (64 * 32); dp->blksize = 512; dp->disksize = sectors; } else { SC_DEBUG(sd->sc_link, SDEV_DB3, ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2), scsi_sense.pages.rigid_geometry.nheads, b2tol(scsi_sense.pages.rigid_geometry.st_cyl_wp), b2tol(scsi_sense.pages.rigid_geometry.st_cyl_rwc), b2tol(scsi_sense.pages.rigid_geometry.land_zone))); /* * KLUDGE!! (for zone recorded disks) * give a number of sectors so that sec * trks * cyls * is <= disk_size * can lead to wasted space! THINK ABOUT THIS ! */ dp->heads = scsi_sense.pages.rigid_geometry.nheads; dp->cyls = _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2); dp->blksize = _3btol(scsi_sense.blk_desc.blklen); if (dp->heads == 0 || dp->cyls == 0) { printf("%s: mode sense (4) returned nonsense", sd->sc_dev.dv_xname); goto fake_it; } if (dp->blksize == 0) dp->blksize = 512; sectors = sd_size(sd, flags); dp->disksize = sectors; sectors /= (dp->heads * dp->cyls); dp->sectors = sectors; /* XXX dubious on SCSI */ } return 0; } int sdsize(dev) dev_t dev; { struct sd_softc *sd; int part; int size; if (sdopen(dev, 0, S_IFBLK) != 0) return -1; sd = sdcd.cd_devs[SDUNIT(dev)]; part = SDPART(dev); 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; if (sdclose(dev, 0, S_IFBLK) != 0) return -1; return size; } #define SCSIDUMP 1 #undef SCSIDUMP #define NOT_TRUSTED 1 #ifdef SCSIDUMP #include static struct scsi_xfer sx; #define MAXTRANSFER 8 /* 1 page at a time */ /* * dump all of physical memory into the partition specified, starting * at offset 'dumplo' into the partition. */ int sddump(dev_t dev) { /* dump core after a system crash */ register struct sd_softc *sd; /* disk unit to do the IO */ int32 num; /* number of sectors to write */ u_int32 unit, part; int32 blkoff, blknum, blkcnt = MAXTRANSFER; int32 nblocks; char *addr; struct scsi_rw_big cmd; extern int Maxmem; static int sddoingadump = 0; #define MAPTO CADDR1 extern caddr_t MAPTO; /* map the page we are about to write, here */ struct scsi_xfer *xs = &sx; int retval; int c; addr = (char *) 0; /* starting address */ /* toss any characters present prior to dump */ while ((c = sgetc(1)) && (c != 0x100)); /*syscons and pccons differ */ /* size of memory to dump */ num = Maxmem; unit = SDUNIT(dev); /* eventually support floppies? */ part = SDPART(dev); /* file system */ /* check for acceptable drive number */ if (unit >= sdcd.cd_ndevs) return ENXIO; sd = sd_softc[unit]; if (!sd) return ENXIO; if (sd->sc_link->flags & SDEV_MEDIA_LOADED != SDEV_MEDIA_LOADED) return ENXIO; /* Convert to disk sectors */ num = (u_int32)num * NBPG / sd->sc_dk.dk_label.d_secsize; /* check if controller active */ if (sddoingadump) return EFAULT; nblocks = sd->sc_dk.dk_label.d_partitions[part].p_size; blkoff = sd->sc_dk.dk_label.d_partitions[part].p_offset; /* check transfer bounds against partition size */ if ((dumplo < 0) || ((dumplo + num) > nblocks)) return EINVAL; sddoingadump = 1; blknum = dumplo + blkoff; while (num > 0) { pmap_enter(kernel_pmap, MAPTO, trunc_page(addr), VM_PROT_READ, TRUE); #ifndef NOT_TRUSTED /* * Fill out the scsi command */ bzero(&cmd, sizeof(cmd)); cmd.opcode = WRITE_BIG; cmd.addr_3 = (blknum & 0xff000000) >> 24; cmd.addr_2 = (blknum & 0xff0000) >> 16; cmd.addr_1 = (blknum & 0xff00) >> 8; cmd.addr_0 = blknum & 0xff; cmd.length2 = (blkcnt & 0xff00) >> 8; cmd.length1 = (blkcnt & 0xff); /* * Fill out the scsi_xfer structure * Note: we cannot sleep as we may be an interrupt * don't use scsi_scsi_cmd() as it may want * to wait for an xs. */ bzero(xs, sizeof(sx)); xs->flags |= SCSI_AUTOCONF | INUSE; xs->sc_link = sd->sc_link; xs->retries = SDRETRIES; xs->timeout = 10000; /* 10000 millisecs for a disk ! */ xs->cmd = (struct scsi_generic *)&cmd; xs->cmdlen = sizeof(cmd); xs->resid = blkcnt * 512; xs->error = XS_NOERROR; xs->bp = 0; xs->data = (u_char *) MAPTO; xs->datalen = blkcnt * 512; /* * Pass all this info to the scsi driver. */ retval = (*(sd->sc_link->adapter->scsi_cmd)) (xs); if (retval != COMPLETE) return ENXIO; #else /* NOT_TRUSTED */ /* lets just talk about this first... */ printf("sd%d: dump addr 0x%x, blk %d\n", unit, addr, blknum); #endif /* NOT_TRUSTED */ if ((unsigned)addr % (1024 * 1024) == 0) printf("%d ", num / 2048); /* update block count */ num -= blkcnt; blknum += blkcnt; (int)addr += 512 * blkcnt; /* operator aborting dump? */ if ((c = sgetc(1)) && (c != 0x100)) return EINTR; } return 0; } #else /* SCSIDUMP */ int sddump() { printf("\nsddump() -- not implemented\n"); delay(6000000); /* 6 seconds */ return -1; } #endif /* SCSIDUMP */