disc&tape D space (part 2 of 2)
Steven M. Schultz
sms at wlv.imsd.contel.com
Wed May 29 05:54:05 AEST 1991
Subject: save D space in disc&tape drivers, TS11&TMSCP fixes
Index: sys/pdpuba/* 2.11BSD
Description:
This two part patch addresses several enhancments and fixes.
This is part 2 of 2.
1) Each disc and tape drive statically allocates at least one
(possibly more) "struct buf" to be used for 'raw' I/O. The
new method has the drivers passing a NULL pointer to physio()
and dynamically allocating a buffer header from the system pool.
The step of replacing the XXread and XXwrite routines with
common "rawread" and "rawwrite" routines was not done because
that involved adding a 'd_strategy' entry point in the cdevsw[]
table and that would cost 48 bytes of D space. In many of the
drivers the validation code and block number calculation was
either removed as redundant (the strategy routine already was
performing the checks) or relocated to the strategy routine.
Drivers are still allowed to statically allocate a raw i/o buffer
if needed (driver has not yet been converted for example).
vm_swp.c no longer has 2 statically allocated buffer headers,
swapping now dynamically allocates buffer headers also.
2) The TS11 driver now supports multiple controllers. The controller
number is coded in bits 6 and 7 of the minor device number now.
3) /boot now constructs the "default" boot image name from the
information passed by boot ROMs. After all, the system did
boot from the device, so the device name and CSR information has
to be correct. Previously /boot would have to be recompiled
with a different RB_DEFNAME (which is not defined/used now)
depending on the current system disc name.
4) The B_RH70 bit in the buffer flags word has been replaced by
the B_LOCKED bit and the necessary changes to ufs_bio.c made
to add the 'locked' queue. At present nothing uses this, future
use may be to relocate the superblock information (for mounted
filesystems) external to the kernel.
The ht.c driver was the ONLY module to refer to the B_RH70 bit,
the driver has been modified to use a static flag word internal
to itself (like the other drivers which can be in a RH70 slot).
5) Enough space was saved that the GENERIC kernel could have the
number of buffers raised from 20 to 32.
6) The density selection logic in the TMSCP driver (tmscp.c) was
redone to support tri-density drives. Although 4 densities
are defined, the middle two are identical at present. If a
different choice of "middle" density was desired, it is a simple
matter to alter the table. Also fixed was a minor typo in the
multi-controller support.
7) /dev/MAKEDEV was modified to create the tape device nodes
placing the controller number in bits 6 and 7. Also for TMSCP
(tu) devices the additional nodes for tri-density drives are
created. For devices such as the TK50 and TU81 the extra
nodes can be removed later to keep /dev smaller.
8) in /etc/rc a blank line is output before the "skipping disk
checks" message.
Repeat-By:
Examine the code.
Fix:
Gather both parts of this patch kit. Apply the patches, then
recompile and install /boot, /unix, and /netnix
This is part 2 of 2
*** /dev/MAKEDEV.old Thu Aug 23 18:21:21 1990
--- /dev/MAKEDEV Sat May 25 18:17:57 1991
***************
*** 56,92 ****
;;
ht*|tm*|ts*|tu*)
! umask 0 ; unit=`expr $i : '..\(.*\)'`
case $i in
! ht*) blk=0; chr=6 ;;
tm*) blk=1; chr=7;;
ts*) blk=2; chr=8;;
tu*) blk=12; chr=23;;
esac
! case $unit in
! 0|1|2|3)
! four=`expr $unit + 4` ; eight=`expr $unit + 8`
! twelve=`expr $unit + 12`; twenty=`expr $unit + 20`
! /etc/mknod mt$unit b $blk $unit
/etc/mknod mt$four b $blk $four
/etc/mknod mt$eight b $blk $eight
/etc/mknod mt$twelve b $blk $twelve
! /etc/mknod nmt$unit b $blk $four ;: sanity w/pdp11 v7
/etc/mknod nmt$eight b $blk $twelve ;: ditto
! /etc/mknod nrmt$unit c $chr $four ;: sanity w/pdp11 v7
/etc/mknod nrmt$eight c $chr $twelve ;: ditto
! /etc/mknod rmt$unit c $chr $unit
/etc/mknod rmt$four c $chr $four
/etc/mknod rmt$eight c $chr $eight
/etc/mknod rmt$twelve c $chr $twelve
! if [ $i = ut ]
then
/etc/mknod mt$twenty b $blk $twenty
/etc/mknod rmt$twenty c $chr $twenty
fi
;;
*)
! echo bad unit for tape in: $1
;;
esac
umask 77
--- 56,119 ----
;;
ht*|tm*|ts*|tu*)
! umask 0 ; ctlr=`expr $i : '..\(.*\)'`
! ctlr=`expr $ctlr '*' 64`
case $i in
! ht*) blk=0; chr=6;;
tm*) blk=1; chr=7;;
ts*) blk=2; chr=8;;
tu*) blk=12; chr=23;;
esac
! # Maximum of 4 controllers in a system
! case $ctlr in
! 0|64|128|192)
! # Maximum of 4 units per controller
! # for unit in 0 1 2 3
! for unit in 0
! do
! zero=`expr $ctlr + $unit + 0`
! four=`expr $zero + 4` ; eight=`expr $zero + 8`
! twelve=`expr $zero + 12`
! sixteen=`expr $zero + 16`
! twenty=`expr $zero + 20`
! twentyfour=`expr $zero + 24`
! twentyeight=`expr $zero + 28`
! /etc/mknod mt$zero b $blk $zero
/etc/mknod mt$four b $blk $four
/etc/mknod mt$eight b $blk $eight
/etc/mknod mt$twelve b $blk $twelve
! /etc/mknod nmt$zero b $blk $four ;: v7 compatibility
/etc/mknod nmt$eight b $blk $twelve ;: ditto
! /etc/mknod nrmt$zero c $chr $four ;: ditto
/etc/mknod nrmt$eight c $chr $twelve ;: ditto
! /etc/mknod rmt$zero c $chr $zero
/etc/mknod rmt$four c $chr $four
/etc/mknod rmt$eight c $chr $eight
/etc/mknod rmt$twelve c $chr $twelve
! if [ `expr $i : '\(..\)'` = tu ]
then
+ /etc/mknod mt$sixteen b $blk $sixteen
+ /etc/mknod mt$twenty b $blk $twenty
+ /etc/mknod mt$twentyfour b $blk $twentyfour
+ /etc/mknod mt$twentyeight b $blk $twentyeight
+ /etc/mknod nmt$sixteen b $blk $twenty ;: v7 compatibility
+ /etc/mknod nmt$twentyfour b $blk $twentyeight ;: ditto
+ /etc/mknod nrmt$sixteen c $chr $twenty ;: ditto
+ /etc/mknod nrmt$twentyfour c $chr $twentyeight ;: ditto
+ /etc/mknod rmt$sixteen c $chr $sixteen
+ /etc/mknod rmt$twenty c $chr $twenty
+ /etc/mknod rmt$twentyfour c $chr $twentyfour
+ /etc/mknod rmt$twentyeight c $chr $twentyeight
+ fi
+ if [ `expr $i : '\(..\)'` = ut ]
+ then
/etc/mknod mt$twenty b $blk $twenty
/etc/mknod rmt$twenty c $chr $twenty
fi
+ done
;;
*)
! echo bad controller for tape in: $1
;;
esac
umask 77
*** /etc/rc.old Mon Aug 27 14:28:43 1990
--- /etc/rc Sun May 26 01:46:19 1991
***************
*** 23,28 ****
--- 23,29 ----
fi
if [ "$1" = fastboot ]
then
+ echo ''
echo Fast boot ... skipping disk checks >/dev/console 2>&1
elif [ "$1" = autoboot ]
then
*** /usr/src/sys/conf/GENERIC.old Wed Dec 19 10:13:42 1990
--- /usr/src/sys/conf/GENERIC Sun May 19 01:09:53 1991
***************
*** 208,215 ****
# buffers for a 1K file system, NBUF would be 128. A possible exception would
# be to reduce the buffers to save on data space, as they were 24 bytes per
# header, last time I looked.
! # should be 20 for GENERIC, so room for kernel + large program to run.
! NBUF 20 # buffer cache, *must* be <= 240
# MAXMEM is the maximum core per process is allowed. First number
# is Kb.
--- 208,215 ----
# buffers for a 1K file system, NBUF would be 128. A possible exception would
# be to reduce the buffers to save on data space, as they were 24 bytes per
# header, last time I looked.
! # should be 'small' for GENERIC, so room for kernel + large program to run.
! NBUF 32 # buffer cache, *must* be <= 240
# MAXMEM is the maximum core per process is allowed. First number
# is Kb.
*** /usr/src/sys/sys/vm_swp.c.old Wed Apr 11 09:49:09 1990
--- /usr/src/sys/sys/vm_swp.c Sat May 18 22:03:16 1991
***************
*** 3,9 ****
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)vm_swp.c 1.1 (2.10BSD Berkeley) 12/1/86
*/
#include "param.h"
--- 3,9 ----
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)vm_swp.c 2.0 (2.11BSD) 5/18/91
*/
#include "param.h"
***************
*** 19,30 ****
#include "uio.h"
/*
- * swap IO headers. They are filled in to point
- * at the desired IO operation.
- */
- struct buf swbuf1, swbuf2;
-
- /*
* swap I/O
*/
swap(blkno, coreaddr, count, rdflg)
--- 19,24 ----
***************
*** 46,63 ****
cnt.v_pgout++;
}
#endif
! bp = &swbuf1;
! if (bp->b_flags & B_BUSY)
! if ((swbuf2.b_flags&B_WANTED) == 0)
! bp = &swbuf2;
! s = splbio();
! while (bp->b_flags&B_BUSY) {
! bp->b_flags |= B_WANTED;
! sleep((caddr_t)bp, PSWP+1);
! }
! splx(s);
while (count) {
! bp->b_flags = B_BUSY | B_PHYS | rdflg;
bp->b_dev = swapdev;
tcount = count;
if (tcount >= 01700) /* prevent byte-count wrap */
--- 40,49 ----
cnt.v_pgout++;
}
#endif
! bp = geteblk(); /* allocate a buffer header */
!
while (count) {
! bp->b_flags = B_BUSY | B_PHYS | B_INVAL | rdflg;
bp->b_dev = swapdev;
tcount = count;
if (tcount >= 01700) /* prevent byte-count wrap */
***************
*** 74,82 ****
coreaddr += tcount;
blkno += ctod(tcount);
}
! if (bp->b_flags&B_WANTED)
! wakeup((caddr_t)bp);
! bp->b_flags &= ~(B_BUSY|B_WANTED);
}
/*
--- 60,66 ----
coreaddr += tcount;
blkno += ctod(tcount);
}
! brelse(bp);
}
/*
***************
*** 104,136 ****
/*
* Raw I/O. The arguments are
* The strategy routine for the device
! * A buffer, which will always be a special buffer
! * header owned exclusively by the device for this purpose
* The device number
* Read/write flag
* Essentially all the work is computing physical addresses and
* validating them.
*
- * physio broken into smaller routines, 3/81 mjk
- * chkphys(WORD or BYTE) checks validity of word- or byte-
- * oriented transfer (for physio or device drivers);
- * physbuf(strat,bp,rw) fills in the buffer header.
- *
- * physio divided into two functions, 1/83 - Mike Edmonds - Tektronix
- * Physio divided into separate functions:
- * physio (for WORD i/o)
- * bphysio (for BYTE i/o)
- * This allows byte-oriented devices (such as tape drives)
- * to write/read odd length blocks.
- *
- * since physio/bphysio just called physio1 with BYTE or WORD added
- * to the argument list, adjusted all calls to physio/bphysio
- * to pass the correct argument themselves.
- * 5/86 kb
- *
* rewritten to use the iov/uio mechanism from 4.3bsd. the physbuf routine
* was inlined. essentially the chkphys routine performs the same task
* as the useracc routine on a 4.3 system. 3/90 sms
*/
physio(strat, bp, dev, rw, kind, uio)
int (*strat)();
--- 88,114 ----
/*
* Raw I/O. The arguments are
* The strategy routine for the device
! * A buffer, which may be a special buffer header
! * owned exclusively by the device for this purpose or
! * NULL if one is to be allocated.
* The device number
* Read/write flag
* Essentially all the work is computing physical addresses and
* validating them.
*
* rewritten to use the iov/uio mechanism from 4.3bsd. the physbuf routine
* was inlined. essentially the chkphys routine performs the same task
* as the useracc routine on a 4.3 system. 3/90 sms
+ *
+ * If the buffer pointer is NULL then one is allocated "dynamically" from
+ * the system cache. the 'invalid' flag is turned on so that the brelse()
+ * done later doesn't place the buffer back in the cache. the 'phys' flag
+ * is left on so that the address of the buffer is recalcuated in getnewbuf().
+ * The BYTE/WORD stuff began to be removed after testing proved that either
+ * 1) the underlying hardware gives an error or 2) nothing bad happens.
+ * besides, 4.3BSD doesn't do the byte/word check and noone could remember
+ * why the byte/word check was added in the first place - likely historical
+ * paranoia. chkphys() inlined. 5/91 sms
*/
physio(strat, bp, dev, rw, kind, uio)
int (*strat)();
***************
*** 139,167 ****
int rw, kind;
register struct uio *uio;
{
! int error, s, nb, ts, c;
register struct iovec *iov;
! nextiov:
u.u_procp->p_flag |= SLOCK;
! if (uio->uio_iovcnt == 0) {
! u.u_procp->p_flag &= ~SLOCK;
! return (0);
! }
iov = uio->uio_iov;
! error = chkphys(kind, iov);
! if (error) {
! u.u_procp->p_flag &= ~SLOCK;
! return(error);
}
- s = splbio();
- while (bp->b_flags & B_BUSY) {
- bp->b_flags |= B_WANTED;
- sleep((caddr_t)bp, PRIBIO+1);
- }
- splx(s);
while (iov->iov_len) {
! bp->b_flags = B_BUSY|B_PHYS|rw;
bp->b_dev = dev;
nb = ((int)iov->iov_base >> 6) & 01777;
ts = (u.u_sep ? UDSA : UISA)[nb >> 7] + (nb & 0177);
--- 117,178 ----
int rw, kind;
register struct uio *uio;
{
! int error, s, nb, ts, c, alloc = 0;
register struct iovec *iov;
! if (!bp)
! alloc++;
u.u_procp->p_flag |= SLOCK;
! nextiov:
! error = 0;
! if (uio->uio_iovcnt == 0)
! goto out;
iov = uio->uio_iov;
!
! #ifdef whybother
! /*
! * Check odd base, odd count, and address wraparound
! * Odd base and count not allowed if flag = WORD,
! * allowed if flag = BYTE.
! */
! if (kind == WORD && (((int)iov->iov_base|iov->iov_len) & 01))
! goto efault;
! #endif
! if (iov->iov_base >= iov->iov_base + iov->iov_len)
! goto efault;
! if (u.u_sep)
! ts = 0;
! else
! ts = (u.u_tsize + 127) & ~0177;
! nb = ((int)iov->iov_base >> 6) & 01777;
! /*
! * Check overlap with text. (ts and nb now
! * in 64-byte clicks)
! */
! if (nb < ts)
! goto efault;
! /*
! * Check that transfer is either entirely in the
! * data or in the stack: that is, either
! * the end is in the data or the start is in the stack
! * (remember wraparound was already checked).
! */
! if (((((int)iov->iov_base + iov->iov_len) >> 6) & 01777) >= ts + u.u_dsize &&
! nb < 1024 - u.u_ssize)
! goto efault;
!
! if (alloc)
! bp = geteblk();
! else {
! s = splbio();
! while (bp->b_flags & B_BUSY) {
! bp->b_flags |= B_WANTED;
! sleep((caddr_t)bp, PRIBIO+1);
! }
! splx(s);
}
while (iov->iov_len) {
! bp->b_flags = B_BUSY|B_PHYS|B_INVAL|rw;
bp->b_dev = dev;
nb = ((int)iov->iov_base >> 6) & 01777;
ts = (u.u_sep ? UDSA : UISA)[nb >> 7] + (nb & 0177);
***************
*** 181,238 ****
if (bp->b_resid || (bp->b_flags & B_ERROR))
break;
}
- if (bp->b_flags & B_WANTED)
- wakeup((caddr_t)bp);
- bp->b_flags &= ~(B_BUSY|B_WANTED|B_PHYS);
error = geterror(bp);
! /* temp kludge for tape drives */
! if (bp->b_resid || error) {
! u.u_procp->p_flag &= ~SLOCK;
! return (error);
}
uio->uio_iov++;
uio->uio_iovcnt--;
goto nextiov;
! }
!
! /*
! * check for validity of physical I/O area
! * (modified from physio to use flag for BYTE-oriented transfers)
! */
! chkphys(flag, iov)
! int flag;
! register struct iovec *iov;
! {
! register int nb, ts;
!
! /*
! * Check odd base, odd count, and address wraparound
! * Odd base and count not allowed if flag = WORD,
! * allowed if flag = BYTE.
! */
! if (flag == WORD && (((int)iov->iov_base|iov->iov_len) & 01))
! return(EFAULT);
! if (iov->iov_base >= iov->iov_base + iov->iov_len)
! return(EFAULT);
! if (u.u_sep)
! ts = 0;
! else
! ts = (u.u_tsize + 127) & ~0177;
! nb = ((int)iov->iov_base >> 6) & 01777;
! /*
! * Check overlap with text. (ts and nb now
! * in 64-byte clicks)
! */
! if (nb < ts)
! return(EFAULT);
! /*
! * Check that transfer is either entirely in the
! * data or in the stack: that is, either
! * the end is in the data or the start is in the stack
! * (remember wraparound was already checked).
! */
! if (((((int)iov->iov_base + iov->iov_len) >> 6) & 01777) >= ts + u.u_dsize &&
! nb < 1024 - u.u_ssize)
! return(EFAULT);
! return(0);
}
--- 192,215 ----
if (bp->b_resid || (bp->b_flags & B_ERROR))
break;
}
error = geterror(bp);
! c = bp->b_resid;
! if (!alloc) {
! if (bp->b_flags & B_WANTED)
! wakeup((caddr_t)bp);
! bp->b_flags &= ~(B_BUSY|B_WANTED);
}
+ else
+ brelse(bp);
+ /* temp kludge for tape drives */
+ if (c || error)
+ goto out;
uio->uio_iov++;
uio->uio_iovcnt--;
goto nextiov;
! efault:
! error = EFAULT;
! out:
! u.u_procp->p_flag &= ~SLOCK;
! return(error);
}
*** /usr/src/sys/sys/ufs_bio.c.old Fri Jun 22 15:28:17 1990
--- /usr/src/sys/sys/ufs_bio.c Sun May 26 23:08:00 1991
***************
*** 3,9 ****
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)ufs_bio.c 1.1 (2.10BSD Berkeley) 12/1/86
*/
#include "param.h"
--- 3,9 ----
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)ufs_bio.c 2.0 (2.11BSD) 5/18/91
*/
#include "param.h"
***************
*** 29,35 ****
register struct buf *bp;
bp = getblk(dev, blkno);
! if (bp->b_flags&B_DONE) {
trace(TR_BREADHIT);
return (bp);
}
--- 29,35 ----
register struct buf *bp;
bp = getblk(dev, blkno);
! if (bp->b_flags&(B_DONE|B_DELWRI)) {
trace(TR_BREADHIT);
return (bp);
}
***************
*** 64,70 ****
*/
if (!incore(dev, blkno)) {
bp = getblk(dev, blkno);
! if ((bp->b_flags&B_DONE) == 0) {
bp->b_flags |= B_READ;
bp->b_bcount = DEV_BSIZE; /* XXX? KB */
(*bdevsw[major(dev)].d_strategy)(bp);
--- 64,70 ----
*/
if (!incore(dev, blkno)) {
bp = getblk(dev, blkno);
! if ((bp->b_flags&(B_DONE|B_DELWRI)) == 0) {
bp->b_flags |= B_READ;
bp->b_bcount = DEV_BSIZE; /* XXX? KB */
(*bdevsw[major(dev)].d_strategy)(bp);
***************
*** 83,89 ****
*/
if (rablkno && !incore(dev, rablkno)) {
rabp = getblk(dev, rablkno);
! if (rabp->b_flags & B_DONE) {
brelse(rabp);
trace(TR_BREADHITRA);
} else {
--- 83,89 ----
*/
if (rablkno && !incore(dev, rablkno)) {
rabp = getblk(dev, rablkno);
! if (rabp->b_flags & (B_DONE|B_DELWRI)) {
brelse(rabp);
trace(TR_BREADHITRA);
} else {
***************
*** 185,191 ****
wakeup((caddr_t)bfreelist);
}
if (bp->b_flags&B_ERROR)
! bp->b_dev = NODEV; /* no assoc */
/*
* Stick the buffer back on a free list.
--- 185,194 ----
wakeup((caddr_t)bfreelist);
}
if (bp->b_flags&B_ERROR)
! if (bp->b_flags & B_LOCKED)
! bp->b_flags &= ~B_ERROR; /* try again later */
! else
! bp->b_dev = NODEV; /* no assoc */
/*
* Stick the buffer back on a free list.
***************
*** 196,202 ****
flist = &bfreelist[BQ_AGE];
binsheadfree(bp, flist);
} else {
! if (bp->b_flags & B_AGE)
flist = &bfreelist[BQ_AGE];
else
flist = &bfreelist[BQ_LRU];
--- 199,207 ----
flist = &bfreelist[BQ_AGE];
binsheadfree(bp, flist);
} else {
! if (bp->b_flags & B_LOCKED)
! flist = &bfreelist[BQ_LOCKED];
! else if (bp->b_flags & B_AGE)
flist = &bfreelist[BQ_AGE];
else
flist = &bfreelist[BQ_LRU];
***************
*** 331,338 ****
bwrite(bp);
goto loop;
}
! #ifdef NRAM > 0
! if(bp->b_flags & B_RAMREMAP) {
register memaddr paddr; /* click address of real buffer */
extern memaddr bpaddr;
--- 336,342 ----
bwrite(bp);
goto loop;
}
! if(bp->b_flags & (B_RAMREMAP|B_PHYS)) {
register memaddr paddr; /* click address of real buffer */
extern memaddr bpaddr;
***************
*** 344,350 ****
bp->b_un.b_addr = (caddr_t)(paddr << 6);
bp->b_xmem = (paddr >> 10) & 077;
}
- #endif
trace(TR_BRELSE);
bp->b_flags = B_BUSY;
return (bp);
--- 348,353 ----
***************
*** 454,459 ****
--- 457,477 ----
}
}
splx(s);
+ }
+
+ /*
+ * Pick up the device's error number and pass it to the user;
+ * if there is an error but the number is 0 set a generalized code.
+ */
+ geterror(bp)
+ register struct buf *bp;
+ {
+ register int error = 0;
+
+ if (bp->b_flags&B_ERROR)
+ if ((error = bp->b_error)==0)
+ return(EIO);
+ return (error);
}
/*
*** /usr/src/sys/h/buf.h.old Fri Jun 22 15:24:49 1990
--- /usr/src/sys/h/buf.h Sun May 26 23:02:08 1991
***************
*** 73,79 ****
#define bftopaddr(bp) ((u_int)(bp)->b_un.b_addr >> 6 | (bp)->b_xmem << 10)
#define dkblock(bp) ((bp)->b_blkno)
#define dkunit(bp) (minor((bp)->b_dev) >> 3)
- #define geterror(bp) ((bp)->b_flags&B_ERROR ? (bp)->b_error ? (bp)->b_error : EIO : 0)
#if defined(KERNEL) && !defined(SUPERVISOR)
#define BUFHSZ 16 /* must be power of 2 */
--- 73,78 ----
***************
*** 108,114 ****
#define B_TAPE 0x00400 /* this is a magtape (no bdwrite) */
#define B_INVAL 0x00800 /* does not contain valid info */
#define B_BAD 0x01000 /* bad block revectoring in progress */
! #define B_RH70 0x02000 /* device is talking to an RH70 */
#define B_UBAREMAP 0x04000 /* addr UNIBUS virtual, not physical */
#define B_RAMREMAP 0x08000 /* remapped into ramdisk */
--- 107,113 ----
#define B_TAPE 0x00400 /* this is a magtape (no bdwrite) */
#define B_INVAL 0x00800 /* does not contain valid info */
#define B_BAD 0x01000 /* bad block revectoring in progress */
! #define B_LOCKED 0x02000 /* locked in core (not reusable) */
#define B_UBAREMAP 0x04000 /* addr UNIBUS virtual, not physical */
#define B_RAMREMAP 0x08000 /* remapped into ramdisk */
*** /usr/src/sys/pdpstand/boot.c.old Tue Apr 23 13:08:44 1991
--- /usr/src/sys/pdpstand/boot.c Mon May 27 20:33:44 1991
***************
*** 3,9 ****
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)boot.c 2.0 (2.11BSD) 4/20/91
*/
#include "../h/param.h"
#include "../machine/seg.h"
--- 3,9 ----
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
! * @(#)boot.c 2.1 (2.11BSD) 5/25/91
*/
#include "../h/param.h"
#include "../machine/seg.h"
***************
*** 12,24 ****
#include "../h/inode.h"
#include "../h/reboot.h"
#include "saio.h"
-
#include <a.out.h>
- #ifndef RB_DEFNAME
- # define RB_DEFNAME "xp(0,0)unix"
- #endif
-
#undef btoc /* to save space */
#define KB * 1024L
--- 12,19 ----
***************
*** 45,51 ****
extern char ADJcsr[]; /* adjustments for ROM csr addresses */
char module[] = "Boot"; /* this program's name (used by trap) */
- char line[64] = RB_DEFNAME;
bool_t overlaid = 0;
u_short pdrproto[16 + NOVL] = {0};
struct exec exec;
--- 40,45 ----
***************
*** 131,137 ****
caddr_t *adjcsr;
struct loadtable *setup();
struct iob *file;
! char *rb = RB_DEFNAME;
maj = major(bootdev);
if (maj >= ndevsw) {
--- 125,131 ----
caddr_t *adjcsr;
struct loadtable *setup();
struct iob *file;
! char line[64], defnam[64], *itoa();
maj = major(bootdev);
if (maj >= ndevsw) {
***************
*** 155,160 ****
--- 149,159 ----
bootdev |= (i << 6); /* controller # to bits 6&7 */
printf("\n%d%s from %s(%d,0,0%o)\n", cputype, module,
devsw[major(bootdev)].dv_name, minor(bootdev), bootcsr);
+ strcpy(defnam, devsw[major(bootdev)].dv_name);
+ strcat(defnam, "(");
+ strcat(defnam, itoa(minor(bootdev)));
+ strcat(defnam, ",0)unix");
+ strcpy(line, defnam);
/*
* The machine language will have gotten the bootopts
* if we're an autoboot and will pass them along.
***************
*** 170,177 ****
} else
printf(": %s\n", line);
if (line[0] == '\0') {
! printf(": %s\n", rb);
! strcpy(line, rb);
}
i = open(line, 0);
j = -1;
--- 169,176 ----
} else
printf(": %s\n", line);
if (line[0] == '\0') {
! strcpy(line, defnam);
! printf(": %s\n", line);
}
i = open(line, 0);
j = -1;
***************
*** 562,565 ****
--- 561,578 ----
register unsigned nclicks;
{
return((unsigned)(((((long) nclicks) + ((long) 63)) >> 6)));
+ }
+
+ char *
+ itoa(i)
+ register int i;
+ {
+ static char x[8];
+ register char *cp = x+8;
+
+ do {
+ *--cp = (i % 10) + '0';
+ i /= 10;
+ } while (i);
+ return(cp);
}
*** /usr/src/sys/pdpstand/Makefile.old Sun Apr 28 00:12:26 1991
--- /usr/src/sys/pdpstand/Makefile Sat May 25 23:29:47 1991
***************
*** 5,23 ****
# be loaded along with all device drivers. This is especially
# a problem with restor. Programs should be <= 48K to be safe.
- # BPI will compile a primary tape bootstrap capable of supporting 800 (HT and
- # TM), 1600 (HT, some third party TMs, and TS), or 6250 (some third party
- # TMs only). 2.10BSD is only distributed at 1600BPI, but others may have
- # need to make boot tapes at different densities ...
- #
- BPI= 1600
-
- # RB_DEFNAME is the name the secondary boot will go for if you just type
- # carriage return to the boot prompt, or if boot detects boot options passed
- # in and RB_ASKNAME isn't set.
- #
- RB_DEFNAME=ra(0,0)unix
-
# DISK which disk to take a root dump of for the distribution tape
# TAPE which tape to write the distribution on
# DUMP where to store a root system dump if you do a ``make dump''
--- 5,10 ----
***************
*** 32,39 ****
RESTOR= ${ETCSRC}/restor/restor.c
ICHECK= ${ETCSRC}/icheck.c
! DEFS= -DBPI=${BPI} -DRB_DEFNAME='"${RB_DEFNAME}"' -DSTANDALONE \
! -I${ROOT}/usr/include
CFLAGS= -O ${DEFS}
BOOT= M.o boot.o ubmapset.o
--- 19,25 ----
RESTOR= ${ETCSRC}/restor/restor.c
ICHECK= ${ETCSRC}/icheck.c
! DEFS= -DSTANDALONE -I${ROOT}/usr/include
CFLAGS= -O ${DEFS}
BOOT= M.o boot.o ubmapset.o
*** /usr/src/sys/GENERIC/localopts.h.old Sat Apr 6 01:05:54 1991
--- /usr/src/sys/GENERIC/localopts.h Sun May 19 01:10:43 1991
***************
*** 16,22 ****
#define MAXMEM (300*16)
#define LINEHZ 60
#ifdef KERNEL
! #define NBUF 20
#define Q22 1
#define UNIBUS_MAP 1
#define VIRUS_VFORK 1
--- 16,22 ----
#define MAXMEM (300*16)
#define LINEHZ 60
#ifdef KERNEL
! #define NBUF 32
#define Q22 1
#define UNIBUS_MAP 1
#define VIRUS_VFORK 1
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