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[src/trunk]: src/sys/arch/arm/arm These are same between arm32 & arm26.
details: https://anonhg.NetBSD.org/src/rev/54cff8b5831d
branches: trunk
changeset: 504489:54cff8b5831d
user: matt <matt%NetBSD.org@localhost>
date: Sun Mar 04 05:06:51 2001 +0000
description:
These are same between arm32 & arm26.
diffstat:
sys/arch/arm/arm/disksubr.c | 439 ++++++++++++++++++++++++++++++++++++++
sys/arch/arm/arm/disksubr_acorn.c | 358 ++++++++++++++++++++++++++++++
sys/arch/arm/arm/disksubr_mbr.c | 276 +++++++++++++++++++++++
3 files changed, 1073 insertions(+), 0 deletions(-)
diffs (truncated from 1085 to 300 lines):
diff -r 244c395a58b5 -r 54cff8b5831d sys/arch/arm/arm/disksubr.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/arm/disksubr.c Sun Mar 04 05:06:51 2001 +0000
@@ -0,0 +1,439 @@
+/* $NetBSD: disksubr.c,v 1.1 2001/03/04 05:06:51 matt Exp $ */
+
+/*
+ * Copyright (c) 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
+ * for the NetBSD Project.
+ * 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.
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
+ * Copyright (c) 1995 Mark Brinicombe
+ * 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 the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/buf.h>
+#include <sys/dkbad.h>
+#include <sys/disklabel.h>
+#include <sys/syslog.h>
+#include <sys/device.h>
+#include <sys/disk.h>
+
+/*
+ * Attempt to read a disk label from a device
+ * using the indicated stategy routine.
+ * The label must be partly set up before this:
+ * secpercyl, secsize and anything required for a block i/o read
+ * operation in the driver's strategy/start routines
+ * must be filled in before calling us.
+ *
+ * If dos partition table requested, attempt to load it and
+ * find disklabel inside a DOS partition. Also, if bad block
+ * table needed, attempt to extract it as well. Return buffer
+ * for use in signalling errors if requested.
+ *
+ * Returns null on success and an error string on failure.
+ */
+
+char *
+readdisklabel(dev, strat, lp, osdep)
+ dev_t dev;
+ void (*strat) __P((struct buf *));
+ struct disklabel *lp;
+ struct cpu_disklabel *osdep;
+{
+ struct buf *bp;
+ struct disklabel *dlp;
+ char *msg = NULL;
+ int cyl, netbsdpartoff, i;
+
+/* printf("Reading disclabel for %04x\n", dev);*/
+
+ /* minimal requirements for archtypal disk label */
+
+ if (lp->d_secsize == 0)
+ lp->d_secsize = DEV_BSIZE;
+
+ if (lp->d_secperunit == 0)
+ lp->d_secperunit = 0x1fffffff;
+
+ lp->d_npartitions = MAXPARTITIONS;
+ for (i = 0; i < MAXPARTITIONS; i++) {
+ if (i == RAW_PART) continue;
+ lp->d_partitions[i].p_offset = 0;
+ lp->d_partitions[i].p_fstype = FS_UNUSED;
+ lp->d_partitions[i].p_size = 0;
+ }
+
+ if (lp->d_partitions[RAW_PART].p_size == 0) {
+ lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
+ lp->d_partitions[RAW_PART].p_offset = 0;
+ lp->d_partitions[RAW_PART].p_size = 0x1fffffff;
+ }
+
+ /* obtain buffer to probe drive with */
+
+ bp = geteblk((int)lp->d_secsize);
+
+ /* request no partition relocation by driver on I/O operations */
+
+ bp->b_dev = dev;
+
+ /* do netbsd partitions in the process of getting disklabel? */
+
+ netbsdpartoff = 0;
+ cyl = LABELSECTOR / lp->d_secpercyl;
+
+ if (osdep) {
+ if (filecore_label_read(dev, strat,lp, osdep, &msg, &cyl,
+ &netbsdpartoff) ||
+ mbr_label_read(dev, strat, lp, osdep, &msg, &cyl,
+ &netbsdpartoff)) {
+ if (msg != NULL)
+ goto done;
+ } else {
+ /*
+ * We didn't find anything we like; NetBSD native.
+ * netbsdpartoff and cyl should be unchanged.
+ */
+ KASSERT(netbsdpartoff == 0);
+ KASSERT(cyl == (LABELSECTOR / lp->d_secpercyl));
+ }
+ }
+
+ /* next, dig out disk label */
+
+/* printf("Reading disklabel addr=%08x\n", netbsdpartoff * DEV_BSIZE);*/
+
+ bp->b_blkno = netbsdpartoff + LABELSECTOR;
+ bp->b_cylinder = bp->b_blkno / lp->d_secpercyl;
+ bp->b_bcount = lp->d_secsize;
+ bp->b_flags |= B_READ;
+ (*strat)(bp);
+
+ /* if successful, locate disk label within block and validate */
+
+ if (biowait(bp)) {
+ msg = "disk label I/O error";
+ goto done;
+ }
+ for (dlp = (struct disklabel *)bp->b_data;
+ dlp <= (struct disklabel *)(bp->b_data + lp->d_secsize - sizeof(*dlp));
+ dlp = (struct disklabel *)((char *)dlp + sizeof(long))) {
+ if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) {
+ if (msg == NULL)
+ msg = "no disk label";
+ } else if (dlp->d_npartitions > MAXPARTITIONS ||
+ dkcksum(dlp) != 0)
+ msg = "disk label corrupted";
+ else {
+ *lp = *dlp;
+ msg = NULL;
+ break;
+ }
+ }
+
+ if (msg)
+ goto done;
+
+ /* obtain bad sector table if requested and present */
+ if (osdep && (lp->d_flags & D_BADSECT)) {
+ struct dkbad *bdp = &osdep->bad;
+ struct dkbad *db;
+
+ i = 0;
+ do {
+ /* read a bad sector table */
+ bp->b_flags &= ~(B_DONE);
+ bp->b_flags |= B_READ;
+ bp->b_blkno = lp->d_secperunit - lp->d_nsectors + i;
+ if (lp->d_secsize > DEV_BSIZE)
+ bp->b_blkno *= lp->d_secsize / DEV_BSIZE;
+ else
+ bp->b_blkno /= DEV_BSIZE / lp->d_secsize;
+ bp->b_bcount = lp->d_secsize;
+ bp->b_cylinder = lp->d_ncylinders - 1;
+ (*strat)(bp);
+
+ /* if successful, validate, otherwise try another */
+ if (biowait(bp)) {
+ msg = "bad sector table I/O error";
+ } else {
+ db = (struct dkbad *)(bp->b_data);
+#define DKBAD_MAGIC 0x4321
+ if (db->bt_mbz == 0
+ && db->bt_flag == DKBAD_MAGIC) {
+ msg = NULL;
+ *bdp = *db;
+ break;
+ } else
+ msg = "bad sector table corrupted";
+ }
+ } while ((bp->b_flags & B_ERROR) && (i += 2) < 10 &&
+ i < lp->d_nsectors);
+ }
+
+done:
+ brelse(bp);
+ return (msg);
+}
+
+
+/*
+ * Check new disk label for sensibility
+ * before setting it.
+ */
+
+int
+setdisklabel(olp, nlp, openmask, osdep)
+ struct disklabel *olp;
+ struct disklabel *nlp;
+ u_long openmask;
+ struct cpu_disklabel *osdep;
+{
+ int i;
+ struct partition *opp, *npp;
+
+ /* sanity clause */
+
+ if (nlp->d_secpercyl == 0 || nlp->d_secsize == 0
+ || (nlp->d_secsize % DEV_BSIZE) != 0)
+ return(EINVAL);
+
+ /* special case to allow disklabel to be invalidated */
+
+ if (nlp->d_magic == 0xffffffff) {
+ *olp = *nlp;
+ return (0);
+ }
+
+ if (nlp->d_magic != DISKMAGIC || nlp->d_magic2 != DISKMAGIC
+ || dkcksum(nlp) != 0)
+ return (EINVAL);
+
+ /* XXX missing check if other acorn/dos partitions will be overwritten */
+
+ while (openmask != 0) {
+ i = ffs(openmask) - 1;
+ openmask &= ~(1 << i);
+ if (nlp->d_npartitions <= i)
+ return (EBUSY);
+ opp = &olp->d_partitions[i];
+ npp = &nlp->d_partitions[i];
+ if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size)
+ return (EBUSY);
+ /*
+ * Copy internally-set partition information
+ * if new label doesn't include it. XXX
+ */
+ if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) {
+ npp->p_fstype = opp->p_fstype;
+ npp->p_fsize = opp->p_fsize;
+ npp->p_frag = opp->p_frag;
+ npp->p_cpg = opp->p_cpg;
+ }
+ }
+
+ nlp->d_checksum = 0;
+ nlp->d_checksum = dkcksum(nlp);
+ *olp = *nlp;
+ return (0);
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