[src/trunk]: src - Increase MAXPARTITIONS for vax from 8 to 16, using the sta...

[abs <abs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f37cd60d4b87
branches:  trunk
changeset: 779972:f37cd60d4b87
user:      abs <abs%NetBSD.org@localhost>
date:      Mon Jul 02 22:42:18 2012 +0000

description:
- Increase MAXPARTITIONS for vax from 8 to 16, using the standard NetBSD
  mechanism to ensure all existing /dev nodes continue to work
- Adjust boot block layout to fit additional partitions
- Adjust number of inodes on install media

diffstat:

 distrib/vax/miniroot/Makefile.inc |   4 ++--
 sys/arch/vax/include/disklabel.h  |  26 ++++++++++++++++++++------
 sys/arch/vax/include/types.h      |   3 ++-
 sys/sys/bootblock.h               |   7 ++++---
 4 files changed, 28 insertions(+), 12 deletions(-)

diffs (98 lines):

diff -r 5ff89b15d9ba -r f37cd60d4b87 distrib/vax/miniroot/Makefile.inc
--- a/distrib/vax/miniroot/Makefile.inc Mon Jul 02 21:44:09 2012 +0000
+++ b/distrib/vax/miniroot/Makefile.inc Mon Jul 02 22:42:18 2012 +0000
@@ -1,7 +1,7 @@
-# $NetBSD: Makefile.inc,v 1.20 2010/02/11 09:06:51 roy Exp $
+# $NetBSD: Makefile.inc,v 1.21 2012/07/02 22:42:18 abs Exp $
 
 IMAGESIZE=     7m
-MAKEFS_FLAGS=  -o density=4k
+MAKEFS_FLAGS=  -o density=3k
 IMAGEENDIAN=   le
 MAKEDEVTARGETS=        all
 LISTS+=                ${DISTRIBDIR}/common/list.sysinst
diff -r 5ff89b15d9ba -r f37cd60d4b87 sys/arch/vax/include/disklabel.h
--- a/sys/arch/vax/include/disklabel.h  Mon Jul 02 21:44:09 2012 +0000
+++ b/sys/arch/vax/include/disklabel.h  Mon Jul 02 22:42:18 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: disklabel.h,v 1.5 2011/08/30 12:39:59 bouyer Exp $     */
+/*     $NetBSD: disklabel.h,v 1.6 2012/07/02 22:42:18 abs Exp $        */
 
 /*
  * Copyright (c) 1994 Christopher G. Demetriou
@@ -33,11 +33,25 @@
 #ifndef _MACHINE_DISKLABEL_H_
 #define _MACHINE_DISKLABEL_H_
 
-#define LABELUSESMBR   0                       /* no MBR partitionning */
-#define        LABELSECTOR     0                       /* sector containing label */
-#define        LABELOFFSET     64                      /* offset of label in sector */
-#define        MAXPARTITIONS   8                       /* number of partitions */
-#define        RAW_PART        2                       /* raw partition: xx?c */
+#define LABELUSESMBR           0       /* no MBR partitionning */
+#define        LABELSECTOR             0       /* sector containing label */
+#define        LABELOFFSET             64      /* offset of label in sector */
+#define        MAXPARTITIONS           16      /* number of partitions */
+#define        OLDMAXPARTITIONS        8       /* number of partitions before nb-6 */
+#define        RAW_PART                2       /* raw partition: xx?c */
+
+/*
+ * We use the highest bit of the minor number for the partition number.
+ * This maintains backward compatibility with device nodes created before
+ * MAXPARTITIONS was increased.
+ */
+#define __VAX_MAXDISKS ((1 << 20) / MAXPARTITIONS)
+#define DISKUNIT(dev)  ((minor(dev) / OLDMAXPARTITIONS) % __VAX_MAXDISKS)
+#define DISKPART(dev)  ((minor(dev) % OLDMAXPARTITIONS) + \
+    ((minor(dev) / (__VAX_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS))
+#define        DISKMINOR(unit, part) \
+    (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \
+     ((part) / OLDMAXPARTITIONS) * (__VAX_MAXDISKS * OLDMAXPARTITIONS))
 
 /* Just a dummy */
 #ifndef _LOCORE
diff -r 5ff89b15d9ba -r f37cd60d4b87 sys/arch/vax/include/types.h
--- a/sys/arch/vax/include/types.h      Mon Jul 02 21:44:09 2012 +0000
+++ b/sys/arch/vax/include/types.h      Mon Jul 02 22:42:18 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: types.h,v 1.45 2012/05/25 12:32:48 matt Exp $  */
+/*     $NetBSD: types.h,v 1.46 2012/07/02 22:42:18 abs Exp $   */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -78,6 +78,7 @@
 #define        __HAVE_CPU_DATA_FIRST
 #define        __HAVE_MM_MD_READWRITE
 #define        __HAVE_MM_MD_DIRECT_MAPPED_PHYS
+#define        __HAVE_OLD_DISKLABEL
 #ifdef _KERNEL
 #define        __HAVE_RAS
 #endif
diff -r 5ff89b15d9ba -r f37cd60d4b87 sys/sys/bootblock.h
--- a/sys/sys/bootblock.h       Mon Jul 02 21:44:09 2012 +0000
+++ b/sys/sys/bootblock.h       Mon Jul 02 22:42:18 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bootblock.h,v 1.53 2012/04/02 18:53:54 christos Exp $  */
+/*     $NetBSD: bootblock.h,v 1.54 2012/07/02 22:42:18 abs Exp $       */
 
 /*-
  * Copyright (c) 2002-2004 The NetBSD Foundation, Inc.
@@ -1409,7 +1409,8 @@
        uint8_t         bb_mbone;       /* must be one */
        uint16_t        bb_lbn_hi;      /* lbn (hi word) of bootstrap */
        uint16_t        bb_lbn_low;     /* lbn (low word) of bootstrap */
-       uint8_t         pad1[332];
+       uint8_t         pad1[460];
+       /* disklabel offset is 64 from base, or 56 from start of pad1 */
 
        /* The rest of these fields are identification area and describe
         * the secondary block for uVAX VMB.
@@ -1431,7 +1432,7 @@
 
        /* The rest is unused.
         */
-       uint8_t         pad2[148];
+       uint8_t         pad2[20];
 } __packed;
 
 #define        VAX_BOOT_MAGIC1                 0x18    /* size of BB info? */