Bad144 support for the slice system (!)
Submitted by: luoqi@watermarkgroup.com (Luoqi Chen) I'm amazed by this. Slice has only been checked in for 2 days..
This commit is contained in:
Julian Elischer
parent
8bafc2452a
commit
afcdc872dc
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@ -23,9 +23,9 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: disklabel.c,v 1.1 1998/04/19 23:31:03 julian Exp $
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* $Id: disklabel.c,v 1.2 1998/04/22 10:25:09 julian Exp $
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*/
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#define BAD144
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#include <sys/param.h>
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#include <sys/kernel.h>
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@ -35,6 +35,9 @@
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#include <sys/disklabel.h>
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#include <sys/diskslice.h>
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#include <sys/dkstat.h>
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#ifdef BAD144
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#include <sys/dkbad.h>
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#endif
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#include <sys/malloc.h>
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#include <dev/slice/slice.h>
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@ -57,6 +60,9 @@ struct private_data {
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struct private_data *pd;
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u_int32_t offset; /* all disklabel supports */
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} subdevs[MAXPARTITIONS];
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#ifdef BAD144
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struct dkbad_intern *bad;
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#endif
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};
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static sl_h_constructor_t dkl_constructor; /* constructor (from device) */
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@ -232,7 +238,78 @@ quit:
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return (error);
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}
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#ifdef BAD144
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static int
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dkl_internbad144(struct private_data *pd, struct dkbad *btp, int flag)
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{
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struct disklabel *lp = &pd->disklabel;
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struct dkbad_intern *bip = pd->bad;
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int i;
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if (bip == NULL) {
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bip = malloc(sizeof *bip, M_DEVBUF, flag);
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if (bip == NULL)
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return (ENOMEM);
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pd->bad = bip;
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}
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/*
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* Spare sectors are allocated beginning with the last sector of
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* the second last track of the disk (the last track is used for
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* the bad sector list).
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*/
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bip->bi_maxspare = lp->d_secperunit - lp->d_nsectors - 1;
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bip->bi_nbad = DKBAD_MAXBAD;
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for (i=0; i < DKBAD_MAXBAD && btp->bt_bad[i].bt_cyl != DKBAD_NOCYL; i++)
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bip->bi_bad[i] = btp->bt_bad[i].bt_cyl * lp->d_secpercyl
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+ (btp->bt_bad[i].bt_trksec >> 8)
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* lp->d_nsectors
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+ (btp->bt_bad[i].bt_trksec & 0x00ff);
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bip->bi_bad[i] = -1;
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#if 1
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for (i = 0; i < DKBAD_MAXBAD && bip->bi_bad[i] != -1; i++)
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printf(" %8d => %8d\n", bip->bi_bad[i],
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bip->bi_maxspare - i);
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#endif
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return (0);
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}
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static int
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dkl_readbad144(struct private_data *pd)
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{
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sl_p slice = pd->slice_down;
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struct disklabel *lp = &pd->disklabel;
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struct dkbad *db;
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struct buf *bp;
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int blkno, i, error;
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for (i = 0; i < min(10, lp->d_nsectors); i += 2) {
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blkno = lp->d_secperunit - lp->d_nsectors + i;
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if (lp->d_secsize > slice->limits.blksize)
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blkno *= lp->d_secsize / slice->limits.blksize;
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else
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blkno /= slice->limits.blksize / lp->d_secsize;
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error = slice_readblock(slice, blkno, &bp);
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if (error)
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return (error);
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bp->b_flags |= B_INVAL | B_AGE;
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db = (struct dkbad *)bp->b_data;
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if (db->bt_mbz == 0 && db->bt_flag == DKBAD_MAGIC) {
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printf(" bad144 table found at block %d\n", blkno);
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error = dkl_internbad144(pd, db, M_NOWAIT);
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brelse(bp);
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return (error);
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}
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brelse(bp);
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}
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return (EINVAL);
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}
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static __inline daddr_t
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dkl_transbad144(struct private_data *pd, daddr_t blkno)
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{
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return transbad144(pd->bad, blkno);
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}
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#endif
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/*-
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* look at a slice and figure out if we should be interested in it. (Is it
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@ -357,6 +434,14 @@ dkl_constructor(sl_p slice)
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return (error);
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}
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}
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#ifdef BAD144
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if (pd->disklabel.d_flags & D_BADSECT) {
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if ((error = dkl_readbad144(pd))) {
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free(pd, M_DEVBUF);
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return (error);
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}
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}
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#endif
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slice->refs++;
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slice->handler_up = &slicetype;
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slice->private_up = pd;
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@ -560,6 +645,10 @@ dkl_revoke(void *private)
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slice->handler_up = NULL;
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slice->private_up = NULL;
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slicetype.refs--;
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#ifdef BAD144
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if (pd->bad)
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free(pd->bad, M_DEVBUF);
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#endif
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free(pd, M_DEVBUF);
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sl_unref(slice);
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return (0);
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@ -583,24 +672,6 @@ RR;
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sliceio(slice, bp, SLW_ABOVE);
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}
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/*
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* shift the appropriate IO by the offset for that slice.
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*/
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static void
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mbr_IOreq(void *private, struct buf * bp)
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{
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register struct private_data *pd;
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struct subdev *sdp;
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register struct slice *slice;
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RR;
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sdp = private;
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pd = sdp->pd;
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slice = pd->slice_down;
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bp->b_pblkno += sdp->offset; /* add the offset for that slice */
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sliceio(slice, bp, SLW_ABOVE);
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}
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static int
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dkl_open(void *private, int flags, int mode, struct proc * p)
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{
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@ -730,6 +801,13 @@ dkl_ioctl(void *private, int cmd, caddr_t addr, int flag, struct proc * p)
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((struct partinfo *)addr)->part = lp->d_partitions + sdp->part;
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return (0);
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#ifdef BAD144
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case DIOCSBAD:
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if (!(flag & FWRITE))
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return (EBADF);
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return (dkl_internbad144(pd, (struct dkbad *)addr, M_WAITOK));
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#endif
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/* These don't really make sense. keep the headers for a reminder */
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case DIOCSDINFO:
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case DIOCSYNCSLICEINFO:
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@ -750,6 +828,17 @@ dkl_upconfig(struct slice *slice, int cmd, caddr_t addr, int flag, struct proc *
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case SLCIOCRESET:
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return (0);
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case SLCIOCTRANSBAD:
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{
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struct private_data *pd;
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daddr_t blkno;
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pd = slice->private_up;
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if (pd->bad)
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*(daddr_t*)addr = dkl_transbad144(pd, *(daddr_t*)addr);
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return (0);
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}
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/* These don't really make sense. keep the headers for a reminder */
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default:
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return (ENOIOCTL);
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@ -23,7 +23,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: mbr.c,v 1.1 1998/04/19 23:31:05 julian Exp $
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* $Id: mbr.c,v 1.2 1998/04/22 10:25:09 julian Exp $
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*/
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#include <sys/param.h>
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@ -825,11 +825,42 @@ static int
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mbr_upconfig(struct slice *slice, int cmd, caddr_t addr,
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int flag, struct proc * p)
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{
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int error;
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RR;
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switch (cmd) {
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case SLCIOCRESET:
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return (0);
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case SLCIOCTRANSBAD:
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{
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struct private_data *pd;
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struct subdev *sdp;
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daddr_t blkno;
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int part;
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blkno = *(daddr_t *)addr;
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pd = slice->private_up;
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sdp = pd->subdevs;
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for (part = 0; part < NDOSPART; part++, sdp++) {
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if (!sdp->slice)
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continue;
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if (blkno < sdp->offset)
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continue;
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if (blkno >= sdp->offset +
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sdp->limit.slicesize / sdp->limit.blksize)
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continue;
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blkno -= sdp->offset;
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slice = sdp->slice;
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error = (*slice->handler_up->upconf)(slice, cmd,
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(caddr_t)&blkno, flag, p);
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if (!error)
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*(daddr_t *)addr = blkno + sdp->offset;
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return (error);
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}
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return (0);
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}
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/* These don't really make sense. keep the headers for a reminder */
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default:
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return (ENOIOCTL);
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@ -23,7 +23,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: slice_device.c,v 1.1 1998/04/19 23:31:14 julian Exp $
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* $Id: slice_device.c,v 1.2 1998/04/22 10:25:10 julian Exp $
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*/
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#define DIAGNOSTIC 1
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@ -227,7 +227,7 @@ slcdevclose(dev_t dev, int flags, int mode, struct proc * p)
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{
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sl_p slice = minor_to_slice(minor(dev));
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RR;
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#ifdef DIAGNOSTIC
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#ifdef DIAGNOSTICX
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if ((flags & (FWRITE | FREAD)) != 0) {
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printf("sliceclose called with non 0 flags\n");
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}
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
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* $Id: wd.c,v 1.159 1998/04/19 23:31:44 julian Exp $
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* $Id: wd.c,v 1.160 1998/04/22 10:25:17 julian Exp $
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*/
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/* TODO:
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@ -83,6 +83,7 @@
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#ifdef SLICE
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#include <sys/device.h>
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#include <sys/fcntl.h>
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#include <sys/sliceio.h>
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#include <dev/slice/slice.h>
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#else
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#include <sys/devfsext.h>
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@ -968,6 +969,11 @@ wdstart(int ctrlr)
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blknum = transbad144(dsgetbad(bp->b_dev, du->dk_slices),
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blknum - ds_offset) + ds_offset;
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}
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#else
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if (du->dk_flags & DKFL_SINGLE) {
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(void) (*du->slice->handler_up->upconf)(du->slice,
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SLCIOCTRANSBAD, (caddr_t)&blknum, 0, 0);
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}
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#endif
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wdtab[ctrlr].b_active = 1; /* mark controller active */
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@ -2395,7 +2401,7 @@ out:
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static void
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wderror(struct buf *bp, struct disk *du, char *mesg)
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{
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#ifndef SLICE
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#ifdef SLICE
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printf("wd%d: %s:\n", du->dk_lunit, mesg);
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#else /* !SLICE */
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if (bp == NULL)
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@ -2653,7 +2659,7 @@ SYSINIT(wddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,wd_drvinit,NULL)
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* be a multiple of a sector in length.
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*/
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static void
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wdsIOreq(void *private ,struct buf *bp)
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wdsIOreq(void *private, struct buf *bp)
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{
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struct disk *du = private;
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int s;
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@ -1,5 +1,5 @@
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/*
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* $Id: mtio.h,v 1.10 1997/02/22 09:45:37 peter Exp $
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* $Id: sliceio.h,v 1.1 1998/04/19 23:32:43 julian Exp $
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*/
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#ifndef _SYS_SLICEIO_H_
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@ -33,5 +33,6 @@ struct subsliceinfo {
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#define SLCIOCMOD _IOW('S', 3, struct sliceinfo) /* force container */
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#define SLCIOCGETSUB _IOWR('S', 4, struct subsliceinfo) /* get sub info */
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#define SLCIOCSETSUB _IOWR('S', 5, struct subsliceinfo) /* set sub info */
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#define SLCIOCTRANSBAD _IOWR('S', 6, daddr_t) /* map bad144 sector */
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#endif /* !_SYS_SLICEIO_H_ */
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