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From: sms@wlv.iipo.gtegsc.com (Steven M. Schultz)
Subject: 18bit RX02 controllers don't work on Q22 systems (#280)
Sender: news@wlbr.iipo.gtegsc.com (Steven M. Schultz)
Organization: GTE Government Systems, Thousand Oaks CA USA
Message-ID: <DIqssq.K6D@wlbr.iipo.gtegsc.com>
X-Nntp-Posting-Host: wlv.iipo.gtegsc.com
Date: Tue, 28 Nov 1995 07:29:12 GMT
Lines: 1214
Subject: 18bit RX02 controllers don't work on Q22 systems (#280)
Index: pdp,pdpuba/machdep.c,rx.c,rl.c 2.11BSD
Description:
On 22 bit Qbus systems the DEC RX controller (as well as 3rd party
subsystems such as the DSD-440) was not usable because it could
only access the low 256kb (18 bit Qbus address range) of memory.
The same problem existed with the RL controller portion of the
DSD-880.
Also the RX driver (pdpuba/rx.c) did not handle 22 bit controllers
correctly. Although DEC did not make 22 bit RX controllers the
Sigma MXV22 had a 22 bit mode.
The probe routine in /etc/autoconfig was wrong - it would not
reliably detect an RX controller.
Repeat-By:
Have an 18 bit RX02 controller present in a 22 bit Qbus system. If the
device configures at all then try to perform a read or write to
the drive. Note the immediate panic or hang as part of the kernel
is overwritten.
Fix:
The solution was to implement a "bounce buffer" - a region of
memory allocated below 256kb into which the I/O takes place. Data
to be written to the 18 bit controller is first copied into the
bounce buffer and the DMA is done out of the bounce buffer. When
a read opeation is to be done the data is DMA'd into the bounce
buffer first and then copied to its final destination.
The term 'software unibus/qbus map' was used a long time ago to
describe this technique. An actual software 'qbus map' would perhaps
have been more elegant but would have been much more work (as well
as requiring the flags word in the 'buf' structure to become a 'long')
for relatively little benefit.
The bounce buffer is 10kb in size. Thus raw I/O to 18 bit devices
is restricted to 10kb (20 sectors). This is the size of I/O which
'dump', 'restor' and 'tar' all use so 10kb is a realistic limit. I/O
to/from the filesystem is always done in 1kb (2 sector) units - so the
10kb limitation does not enter into the picture.
There is only 1 bounce buffer. If more than one 18bit controller
is present in the system then access to the bounce buffer will
be serialized.
Credit where credit is due - I rescued much of the code from the
/sys/OTHERS directory. The 'software map' (bounce buffer) came
from /sys/OTHERS/18bit_22bit and the improved RX02 driver came out
of /sys/OTHERS/rx02/#2. The changes to the RX02 and RL
drivers to use the 'soft map' were my handywork. Thanks go to
Tim Shoppa for the use of his 11/73 and RX02 drives for the debug
effort.
The attached shar file contains two items: a shell script (which
you may either use directly or perform the steps manually) and a
patch file.
When the shar file is unpacked it will create two files in /tmp:
script.280 and patch.280.
/tmp/script.280 renames several files in /sys/pdpuba, moves several
files from /sys/OTHERS into /sys/pdpuba and then deletes the
directories from /sys/OTHERS. If you'd rather leave /sys/OTHERS
intact then you'll want to substitute 'cp' commands for the 'mv'
commands and not perform the 'rm -r' commands.
NOTE: The GENERIC kernel config file has changed and now includes
the option 'SOFUB_MAP'. If you wish to incorporate 18bit
controller support into existing kernels you will need to
modify their config files in the same way that GENERIC's was.
The GENERIC kernel includes SOFUB_MAP as a standard option.
NOTE: The Makefile used to build GENERIC kernels (conf/Make.sunix)
was modified because the overlay structure required changes
(the bounce buffer logic caused several modules to grow).
IF you do include the option SOFUB_MAP in existing kernels
you will likely have to shuffle some overlays around.
And now on to the installation of the update...
Cut where indicated, saving the attached shar file to a temp file
(/tmp/280). Then:
cd /tmp
sh 280
sh script.280
patch -p0 < patch.280
cd /sys/autoconfig
make clean
make
make install
make clean
This is optional, but if the idea of keeping a current GENERIC
kernel appeals to you then:
cd /sys
rm -r GENERIC
cd conf
./config GENERIC
cd ../GENERIC
make
mv unix /genunix
Unless you have RX02 devices present you do not need to recompile
your existing kernel. It is a good idea to go into /sys/conf
and make sure that all kernel config files have included in them
the new SOFUB_MAP option set to NO - simply replicate the paragraph
from GENERIC's file.
============================cut here=========================
#! /bin/sh
# This is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line.
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh (not csh) to create:
# /tmp/script.280
# /tmp/patch.280
# This archive created: Mon Nov 27 22:41:03 1995
export PATH; PATH=/bin:/usr/bin:$PATH
if test -f '/tmp/script.280'
then
echo shar: "will not over-write existing file '/tmp/script.280'"
else
sed 's/^X//' << \SHAR_EOF > '/tmp/script.280'
X#!/bin/sh -v
X
Xmv /sys/pdpuba/rx.c /sys/pdpuba/rx.c.old
Xmv /sys/pdpuba/rxreg.h /sys/pdpuba/rxreg.h.old
Xmv /sys/autoconfig/rxauto.c /sys/autoconfig/rxauto.c.old
X
Xmv /sys/OTHERS/rx02/#2/rx.c /sys/pdpuba/rx.c
Xmv /sys/OTHERS/rx02/#2/rxreg.h /sys/pdpuba/rxreg.h
Xmv /sys/OTHERS/rx02/#2/rxauto.c /sys/autoconfig/rxauto.c
X
Xrm -r /sys/OTHERS/rx02/#2
Xrm -r /sys/OTHERS/18bit_22bit
SHAR_EOF
chmod 755 '/tmp/script.280'
fi
if test -f '/tmp/patch.280'
then
echo shar: "will not over-write existing file '/tmp/patch.280'"
else
sed 's/^X//' << \SHAR_EOF > '/tmp/patch.280'
X*** /usr/src/sys/pdpuba/rx.c.old Sat Jan 2 23:55:05 1993
X--- /usr/src/sys/pdpuba/rx.c Mon Nov 27 21:08:48 1995
X***************
X*** 3,14 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rx.c 1.2 (2.11BSD GTE) 1/2/93
X */
X
X /*
X * RX02 floppy disk device driver
X *
X * This driver was written by Bill Shannon and distributed on the
X * DEC v7m UNIX tape. It has been modified for 2BSD and has been
X * included with the permission of the DEC UNIX Engineering Group.
X--- 3,27 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rx.c 1.4 (2.11BSD GTE) 1995/11/27
X */
X
X /*
X * RX02 floppy disk device driver
X *
X+ * sms - November 26, 1995.
X+ * Actually got it working with a 18 bit controller on a 22 bit Qbus.
X+ *
X+ * sms - November 21, 1995.
X+ * Moved from OTHERS/rx02/#2 into the supported directory: sys/pdpuba.
X+ * Added conditionalized support for a "software unibus/qbus map" so that
X+ * 18 bit controllers could be supported in 22 bit Qbus systems.
X+ *
X+ * Date: Sun, 8 May 88 18:42:38 CDT
X+ * uunet!nuchat!steve@rutgers.edu (Steve Nuchia)
X+ * The rx02 driver as distributed didn't even come close to working
X+ * on a Q22 machine - probe was wrong and it got worse from there.
X+ *
X * This driver was written by Bill Shannon and distributed on the
X * DEC v7m UNIX tape. It has been modified for 2BSD and has been
X * included with the permission of the DEC UNIX Engineering Group.
X***************
X*** 36,41 ****
X--- 49,56 ----
X #include "tty.h"
X #include "rxreg.h"
X #include "errno.h"
X+ #include "map.h"
X+ #include "uba.h"
X
X struct rxdevice *RXADDR;
X
X***************
X*** 48,53 ****
X--- 63,69 ----
X #define NBPS ((minor(bp->b_dev)&2) ? 256 : 128) /* bytes per sector */
X #define DENSITY (minor(bp->b_dev)&2) /* Density: 0 = single, 2 = double */
X #define UNIT (minor(bp->b_dev)&1) /* Unit Number: 0 = left, 1 = right */
X+ #define RXGID (RX_GO | RX_IE | (DENSITY << 7))
X
X #define rxwait() while (((RXADDR->rxcs) & RX_XREQ) == 0)
X #define seccnt(bp) ((int)((bp)->b_seccnt))
X***************
X*** 56,61 ****
X--- 72,89 ----
X struct buf crxbuf; /* buffer header for control functions */
X
X /*
X+ * DEC controllers do not do 22 bit DMA but 3rd party (Sigma MXV-22) can.
X+ * 'rxsoftmap' can be patched (via 'adb') as indicated below to inhibit
X+ * the probing (checking bit 10 in the CSR) for 22 bit controllers.
X+ */
X+
X+ static char mxv22; /* MXV22 can do native 22 bit DMA */
X+ static char rxsoftmap = -1; /* -1 = OK to check for soft map
X+ * 0 = Never use soft map
X+ * 1 = Always use soft map
X+ */
X+
X+ /*
X * states of driver, kept in b_state
X */
X #define SREAD 1 /* read started */
X***************
X*** 68,80 ****
X rxattach(addr, unit)
X struct rxdevice *addr;
X u_int unit;
X! {
X! if (unit != 0)
X! return (0);
X! RXADDR = addr;
X! return (1);
X! }
X
X /*ARGSUSED*/
X rxopen(dev, flag)
X dev_t dev;
X--- 96,117 ----
X rxattach(addr, unit)
X struct rxdevice *addr;
X u_int unit;
X! {
X
X+ if (unit != 0)
X+ return(0);
X+ RXADDR = addr;
X+ if (addr->rxcs & RX_Q22) /* 22 bit capable? */
X+ mxv22 = 1;
X+ /*
X+ * If it is not a 22 bit controller and there is no Unibus map and
X+ * it is permitted to switch to a soft map then set the "use soft map" flag.
X+ */
X+ if (!mxv22 && !ubmap && rxsoftmap == -1)
X+ rxsoftmap = 1;
X+ return(1);
X+ }
X+
X /*ARGSUSED*/
X rxopen(dev, flag)
X dev_t dev;
X***************
X*** 91,97 ****
X
X if (minor(bp->b_dev) >= 4 || !RXADDR)
X goto bad;
X- mapalloc(bp);
X if (bp->b_blkno >= NRXBLKS) {
X if (bp->b_flags&B_READ)
X bp->b_resid = bp->b_bcount;
X--- 128,133 ----
X***************
X*** 102,107 ****
X--- 138,154 ----
X iodone(bp);
X return;
X }
X+
X+ #ifdef SOFUB_MAP
X+ if (rxsoftmap == 1)
X+ {
X+ if (sofub_alloc(bp) == 0)
X+ return;
X+ }
X+ else
X+ #endif
X+ mapalloc(bp);
X+
X bp->av_forw = (struct buf *) NULL;
X
X /*
X***************
X*** 130,136 ****
X rxstart()
X {
X register struct buf *bp;
X! int addr, xmem;
X int n, sector, track;
X
X if ((bp = rxtab.b_actf) == NULL) {
X--- 177,183 ----
X rxstart()
X {
X register struct buf *bp;
X! int addr, xmem, cmd;
X int n, sector, track;
X
X if ((bp = rxtab.b_actf) == NULL) {
X***************
X*** 140,155 ****
X
X if (bp == &crxbuf) { /* is it a control request ? */
X rxtab.b_state = SFORMAT;
X! RXADDR->rxcs = RX_SMD | RX_GO | RX_IE
X! | (UNIT << 4) | (DENSITY << 7);
X rxwait();
X! RXADDR->rxdb = 0222;
X } else
X if (bp->b_flags & B_READ) {
X rxtab.b_state = SREAD;
X rxfactr((int)bp->b_blkno * NSPB + seccnt(bp), §or, &track);
X! RXADDR->rxcs = RX_RSECT | RX_GO | RX_IE
X! | (UNIT << 4) | (DENSITY << 7);
X rxwait();
X RXADDR->rxsa = sector;
X rxwait();
X--- 187,200 ----
X
X if (bp == &crxbuf) { /* is it a control request ? */
X rxtab.b_state = SFORMAT;
X! RXADDR->rxcs = RX_SMD | RXGID | (UNIT << 4);
X rxwait();
X! RXADDR->rxdb = 0111;
X } else
X if (bp->b_flags & B_READ) {
X rxtab.b_state = SREAD;
X rxfactr((int)bp->b_blkno * NSPB + seccnt(bp), §or, &track);
X! RXADDR->rxcs = RX_RSECT | RXGID | (UNIT << 4);
X rxwait();
X RXADDR->rxsa = sector;
X rxwait();
X***************
X*** 158,171 ****
X rxtab.b_state = SFILL;
X n = bp->b_resid >= NBPS ? NBPS : bp->b_resid;
X rxaddr ( bp, &addr, &xmem );
X! RXADDR->rxcs = RX_FILL | RX_Q22 | RX_GO
X! | RX_IE | (DENSITY << 7);
X rxwait();
X RXADDR->rxwc = n >> 1;
X rxwait();
X RXADDR->rxba = addr;
X! rxwait();
X! RXADDR->rxba = xmem;
X }
X }
X
X--- 203,222 ----
X rxtab.b_state = SFILL;
X n = bp->b_resid >= NBPS ? NBPS : bp->b_resid;
X rxaddr ( bp, &addr, &xmem );
X! if (rxsoftmap <= 0)
X! cmd = RX_Q22;
X! else
X! cmd = 0;
X! RXADDR->rxcs = RX_FILL | RXGID | ((xmem & 3) << 12) | cmd;
X rxwait();
X RXADDR->rxwc = n >> 1;
X rxwait();
X RXADDR->rxba = addr;
X! if (rxsoftmap <= 0)
X! {
X! rxwait();
X! RXADDR->rxba = xmem;
X! }
X }
X }
X
X***************
X*** 172,178 ****
X rxintr()
X {
X register struct buf *bp;
X! int n, sector, track;
X static rxerr[4];
X char *decode;
X int addr, xmem;
X--- 223,229 ----
X rxintr()
X {
X register struct buf *bp;
X! int n, sector, track, cmd;
X static rxerr[4];
X char *decode;
X int addr, xmem;
X***************
X*** 213,221 ****
X case 0310: decode = "write protected"; break;
X default: decode = "unknown error"; break;
X }
X! printf ( "rx: errcode %o = %s\n", rxerr[0], decode );
X rxtab.b_errcnt = 0;
X rxtab.b_actf = bp->av_forw;
X iodone(bp);
X }
X RXADDR->rxcs = RX_INIT;
X--- 264,276 ----
X case 0310: decode = "write protected"; break;
X default: decode = "unknown error"; break;
X }
X! printf("rx: err %o=%s\n", rxerr[0], decode );
X rxtab.b_errcnt = 0;
X rxtab.b_actf = bp->av_forw;
X+ #ifdef SOFUB_MAP
X+ if (rxsoftmap == 1)
X+ sofub_relse(bp, bp->b_bcount);
X+ #endif
X iodone(bp);
X }
X RXADDR->rxcs = RX_INIT;
X***************
X*** 229,249 ****
X rxtab.b_state = SEMPTY;
X n = bp->b_resid >= NBPS? NBPS : bp->b_resid;
X rxaddr ( bp, &addr, &xmem );
X! RXADDR->rxcs = RX_EMPTY | RX_Q22 | RX_GO
X! | RX_IE | (DENSITY << 7);
X rxwait();
X RXADDR->rxwc = n >> 1;
X rxwait();
X RXADDR->rxba = addr;
X! rxwait();
X! RXADDR->rxba = xmem;
X return;
X
X case SFILL: /* fill done, start write */
X rxtab.b_state = SWRITE;
X rxfactr((int)bp->b_blkno * NSPB + seccnt(bp), §or, &track);
X! RXADDR->rxcs = RX_WSECT | RX_GO | RX_IE
X! | (UNIT << 4) | (DENSITY << 7);
X rxwait();
X RXADDR->rxsa = sector;
X rxwait();
X--- 284,309 ----
X rxtab.b_state = SEMPTY;
X n = bp->b_resid >= NBPS? NBPS : bp->b_resid;
X rxaddr ( bp, &addr, &xmem );
X! if (rxsoftmap <= 0)
X! cmd = RX_Q22;
X! else
X! cmd = 0;
X! RXADDR->rxcs = RX_EMPTY | RXGID | ((xmem & 3) << 12) | cmd;
X rxwait();
X RXADDR->rxwc = n >> 1;
X rxwait();
X RXADDR->rxba = addr;
X! if (rxsoftmap <= 0)
X! {
X! rxwait();
X! RXADDR->rxba = xmem;
X! }
X return;
X
X case SFILL: /* fill done, start write */
X rxtab.b_state = SWRITE;
X rxfactr((int)bp->b_blkno * NSPB + seccnt(bp), §or, &track);
X! RXADDR->rxcs = RX_WSECT | RXGID | (UNIT << 4);
X rxwait();
X RXADDR->rxsa = sector;
X rxwait();
X***************
X*** 263,268 ****
X--- 323,332 ----
X bp->b_resid = 0;
X rxtab.b_errcnt = 0;
X rxtab.b_actf = bp->av_forw;
X+ #ifdef SOFUB_MAP
X+ if (rxsoftmap == 1)
X+ sofub_relse(bp, bp->b_bcount);
X+ #endif
X iodone(bp);
X break;
X }
X***************
X*** 324,334 ****
X static
X rxaddr(bp, addr, xmem)
X register struct buf *bp;
X! register char **addr, *xmem;
X {
X! *addr = bp->b_un.b_addr + seccnt(bp) * NBPS;
X *xmem = bp->b_xmem;
X! if (*addr < bp->b_un.b_addr) /* overflow, bump xmem */
X (*xmem)++;
X }
X
X--- 388,398 ----
X static
X rxaddr(bp, addr, xmem)
X register struct buf *bp;
X! register u_int *addr, *xmem;
X {
X! *addr = (u_int)bp->b_un.b_addr + (seccnt(bp) * NBPS);
X *xmem = bp->b_xmem;
X! if (*addr < (u_int)bp->b_un.b_addr) /* overflow, bump xmem */
X (*xmem)++;
X }
X
X*** /usr/src/sys/pdpuba/rl.c.old Tue Aug 1 20:43:32 1995
X--- /usr/src/sys/pdpuba/rl.c Mon Nov 27 20:40:01 1995
X***************
X*** 3,13 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rl.c 1.6 (2.11BSD GTE) 1995/08/01
X */
X
X /*
X * RL01/RL02 disk driver
X * Date: August 1, 1995
X * Fix bug which prevented labeling disks with no label or a corrupted label.
X * Correct typographical error, the raclose() routine was being called by
X--- 3,20 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rl.c 1.7 (2.11BSD GTE) 1995/11/27
X */
X
X /*
X * RL01/RL02 disk driver
X+ *
X+ * Date: November 27, 1995
X+ * Add support for using the software unibus/qbus map. This allows 3rd
X+ * party 18bit RL controllers (DSD-880) to be used in a 22bit Qbus system.
X+ * NOTE: I have been told that the DEC RLV11 does not properly monitor
X+ * the I/O Page signal which means the RLV11 still can not be used.
X+ *
X * Date: August 1, 1995
X * Fix bug which prevented labeling disks with no label or a corrupted label.
X * Correct typographical error, the raclose() routine was being called by
X***************
X*** 52,59 ****
X
X struct rldevice *RLADDR;
X
X! static int q22bae = 1;
X!
X daddr_t rlsize();
X int rlstrategy();
X void rldfltlbl();
X--- 59,69 ----
X
X struct rldevice *RLADDR;
X
X! static char q22bae;
X! static char rlsoftmap = -1; /* -1 = OK to change during attach
X! * 0 = Never use soft map
X! * 1 = Always use soft map
X! */
X daddr_t rlsize();
X int rlstrategy();
X void rldfltlbl();
X***************
X*** 103,108 ****
X--- 113,124 ----
X return (0);
X if ((addr != (struct rldevice *)NULL) && (fioword(addr) != -1)) {
X RLADDR = addr;
X+ if (fioword(&addr->rlbae) == -1)
X+ q22bae = -1;
X+ #ifdef SOFUB_MAP
X+ if (q22bae != 0 && !ubmap && rlsoftmap == -1)
X+ rlsoftmap = 1;
X+ #endif
X return (1);
X }
X RLADDR = (struct rldevice *)NULL;
X***************
X*** 343,349 ****
X bp->b_error = EROFS;
X goto bad;
X }
X! mapalloc(bp);
X
X bp->av_forw = NULL;
X bp->b_cylin = (int)(bp->b_blkno/20L);
X--- 359,373 ----
X bp->b_error = EROFS;
X goto bad;
X }
X! #ifdef SOFUB_MAP
X! if (rlsoftmap == 1)
X! {
X! if (sofub_alloc(bp) == 0)
X! return;
X! }
X! else
X! #endif
X! mapalloc(bp);
X
X bp->av_forw = NULL;
X bp->b_cylin = (int)(bp->b_blkno/20L);
X***************
X*** 471,476 ****
X--- 495,504 ----
X if((bp != NULL)&&(rlutab[rl.dn].b_actf != NULL))
X rlseek((int)(rlutab[rl.dn].b_actf->b_blkno/20l),rl.dn);
X #endif
X+ #ifdef SOFUB_MAP
X+ if (rlsoftmap == 1)
X+ sofub_relse(bp, bp->b_bcount);
X+ #endif
X iodone(bp);
X rlstart();
X }
X***************
X*** 485,492 ****
X rladdr->rlda = (rl.chn << 6) | rl.sn;
X rladdr->rlba = (caddr_t)rl.rl_un.w[1];
X rladdr->rlmp = -(rl.bpart >> 1);
X- if (q22bae == 1)
X- q22bae = (fioword(&rladdr->rlbae) == -1 ? -1 : 0);
X if (q22bae == 0)
X rladdr->rlbae = rl.rl_un.w[0];
X rladdr->rlcs = rl.com | (rl.rl_un.w[0] & 03) << 4;
X--- 513,518 ----
X***************
X*** 625,630 ****
X--- 651,658 ----
X return(ENXIO);
X if (pi->p_fstype != FS_SWAP)
X return(EFTYPE);
X+ if (rlsoftmap == 1) /* No crash dumps via soft map */
X+ return(EFAULT);
X
X dumpsize = rlsize(dev) - dumplo;
X memblks = ctod(physmem);
X***************
X*** 666,673 ****
X rladdr->rlba = 0;
X } else {
X rladdr->rlba = loint(paddr);
X- if (q22bae == 1)
X- q22bae = (fioword(&rladdr->rlbae) == -1 ? -1:0);
X if (q22bae == 0)
X rladdr->rlbae = hiint(paddr);
X com |= (hiint(paddr) & 03) << 4;
X--- 694,699 ----
X*** /usr/src/sys/pdpuba/rxreg.h.old Thu Sep 1 14:14:08 1988
X--- /usr/src/sys/pdpuba/rxreg.h Tue Nov 21 21:56:29 1995
X***************
X*** 3,9 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rxreg.h 1.1 (2.10BSD Berkeley) 12/1/86
X */
X
X struct rxdevice {
X--- 3,9 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rxreg.h 1.2 (2.11BSD GTE) 1995/11/21
X */
X
X struct rxdevice {
X***************
X*** 24,30 ****
X /* bits 13-12 are the extension bits */
X #define RX_RX02 0004000 /* rx02 (read only) */
X
X! #define RX_Q22 0002000 /* enable 22-bit mode */
X #define RX_HD 0001000 /* DSD 480 head select */
X #define RX_DD 0000400 /* double density */
X #define RX_XREQ 0000200 /* transfer request */
X--- 24,30 ----
X /* bits 13-12 are the extension bits */
X #define RX_RX02 0004000 /* rx02 (read only) */
X
X! #define RX_Q22 0002000 /* enable 22-bit mode (DSD MXV-22) */
X #define RX_HD 0001000 /* DSD 480 head select */
X #define RX_DD 0000400 /* double density */
X #define RX_XREQ 0000200 /* transfer request */
X*** /usr/src/sys/conf/config.old Fri Jul 21 20:55:37 1995
X--- /usr/src/sys/conf/config Wed Nov 22 21:29:53 1995
X***************
X*** 8,13 ****
X--- 8,15 ----
X # end, rely instead on the system administrator's choice of
X # umask.
X # 2/14/95 - added ingres lock driver. removed vax cruft.
X+ #
X+ # 1995/11/22 - added software map (SOFUB_MAP) option.
X
X LO=../h/localopts.h
X
X***************
X*** 147,152 ****
X--- 149,157 ----
X fi
X if [ $PROFILE = YES ]; then
X OPTS="$OPTS -DPROFILE"
X+ fi
X+ if [ $SOFUB_MAP = YES ]; then
X+ OPTS="$OPTS -DSOFUB_MAP"
X fi
X
X echo "Creating device header files."
X*** /usr/src/sys/conf/GENERIC.old Fri Jul 21 20:52:39 1995
X--- /usr/src/sys/conf/GENERIC Wed Nov 22 21:23:34 1995
X***************
X*** 105,110 ****
X--- 105,115 ----
X UCB_CLIST NO # clists moved from kernel data space
X QUOTA NO # dynamic file system quotas
X # NOTE -- *very* expensive
X+ SOFUB_MAP YES # Software UNIBUS/QBUS map. Permits
X+ # use of 18 bit controllers in a 22 bit
X+ # Qbus system. Normally NO except for
X+ # the GENERIC kernel or if you actually
X+ # have an 18 bit RX02 on a Qbus system.
X
X # UCB_METER is fairly expensive, but various programs (iostat, vmstat, etc)
X # use it.
X*** /usr/src/sys/conf/Make.sunix.old Thu May 11 21:42:31 1995
X--- /usr/src/sys/conf/Make.sunix Thu Nov 23 09:32:26 1995
X***************
X*** 9,15 ****
X # software without specific prior written permission. This software
X # is provided ``as is'' without express or implied warranty.
X #
X! # 2.2 (2.11BSD GTE) 1995/05/11
X #
X #########################################################
X # Non-network, but separate I/D kernel #
X--- 9,15 ----
X # software without specific prior written permission. This software
X # is provided ``as is'' without express or implied warranty.
X #
X! # 2.3 (2.11BSD GTE) 1995/11/22
X #
X #########################################################
X # Non-network, but separate I/D kernel #
X***************
X*** 48,58 ****
X
X BASE= br.o dh.o dhu.o dhv.o dkbad.o dr.o dz.o init_sysent.o kern_clock.o \
X kern_descrip.o kern_mman.o kern_proc.o kern_sig.o kern_subr.o \
X! kern_synch.o lp.o machdep.o ra.o ram.o rk.o rl.o rx.o si.o \
X subr_rmap.o subr_xxx.o sys_inode.o sys_pipe.o trap.o tty.o \
X tty_conf.o tty_subr.o tty_tb.o tty_tty.o ufs_alloc.o ufs_bio.o \
X ufs_bmap.o ufs_dsort.o ufs_fio.o ufs_inode.o ufs_namei.o \
X! ufs_subr.o vm_sched.o xp.o
X OV1= sys_generic.o ufs_syscalls.o mem.o
X OV2= kern_acct.o kern_exec.o kern_exit.o kern_fork.o kern_resource.o
X OV3= clock.o cons.o kern_pdp.o kern_time.o \
X--- 48,58 ----
X
X BASE= br.o dh.o dhu.o dhv.o dkbad.o dr.o dz.o init_sysent.o kern_clock.o \
X kern_descrip.o kern_mman.o kern_proc.o kern_sig.o kern_subr.o \
X! kern_synch.o lp.o machdep.o ra.o ram.o rk.o si.o \
X subr_rmap.o subr_xxx.o sys_inode.o sys_pipe.o trap.o tty.o \
X tty_conf.o tty_subr.o tty_tb.o tty_tty.o ufs_alloc.o ufs_bio.o \
X ufs_bmap.o ufs_dsort.o ufs_fio.o ufs_inode.o ufs_namei.o \
X! ufs_subr.o xp.o
X OV1= sys_generic.o ufs_syscalls.o mem.o
X OV2= kern_acct.o kern_exec.o kern_exit.o kern_fork.o kern_resource.o
X OV3= clock.o cons.o kern_pdp.o kern_time.o \
X***************
X*** 61,69 ****
X OV4= hk.o init_main.o kern_prot.o tty_pty.o quota_kern.o quota_subr.o \
X quota_ufs.o subr_log.o vm_swp.o vm_swap.o vm_proc.o toy.o
X OV5= ht.o tm.o ts.o
X! OV6= tmscp.o kern_sysctl.o
X! OV7= mch_fpsim.o ingreslock.o ufs_disksubr.o
X! OV8= vm_text.o
X
X KERNOBJ=${CONF} ${BASE} ${OV1} ${OV2} ${OV3} ${OV4} ${OV5} \
X ${OV6} ${OV7} ${OV8} ${OV9} ${OV10} ${OV11} ${OV12} \
X--- 61,69 ----
X OV4= hk.o init_main.o kern_prot.o tty_pty.o quota_kern.o quota_subr.o \
X quota_ufs.o subr_log.o vm_swp.o vm_swap.o vm_proc.o toy.o
X OV5= ht.o tm.o ts.o
X! OV6= tmscp.o vm_text.o
X! OV7= rl.o mch_fpsim.o ingreslock.o ufs_disksubr.o
X! OV8= rx.o kern_sysctl.o vm_sched.o
X
X KERNOBJ=${CONF} ${BASE} ${OV1} ${OV2} ${OV3} ${OV4} ${OV5} \
X ${OV6} ${OV7} ${OV8} ${OV9} ${OV10} ${OV11} ${OV12} \
X*** /usr/src/sys/autoconfig/rxauto.c.old Thu Sep 1 14:14:07 1988
X--- /usr/src/sys/autoconfig/rxauto.c Tue Nov 21 21:45:42 1995
X***************
X*** 3,9 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rxauto.c 1.1 (2.10BSD Berkeley) 12/1/86
X */
X
X #include "param.h"
X--- 3,9 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)rxauto.c 1.2 (2.11BSD GTE) 1995/11/21
X */
X
X #include "param.h"
X*** /usr/src/sys/pdp/machdep2.c.old Wed May 3 20:33:09 1995
X--- /usr/src/sys/pdp/machdep2.c Wed Nov 22 20:42:50 1995
X***************
X*** 3,9 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)machdep2.c 2.4 (2.11BSD GTE) 1995/05/01
X */
X
X #include "param.h"
X--- 3,9 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)machdep2.c 2.5 (2.11BSD GTE) 1995/11/22
X */
X
X #include "param.h"
X***************
X*** 47,52 ****
X--- 47,58 ----
X u_short _iosize = 2 * (1928 + 1096 + 128); /* enough for 2 TMSCP and 2 MSCP */
X #endif
X
X+ #ifdef SOFUB_MAP
X+ extern size_t sofub_addr, sofub_off;
X+ extern memaddr sofub_base;
X+ extern u_int sofub_size;
X+ #endif
X+
X segm seg5; /* filled in by initialization */
X
X /*
X***************
X*** 138,143 ****
X--- 144,184 ----
X #else
X clstaddr = (ubadr_t)cfree;
X #endif
X+
X+ /*
X+ * IMPORTANT. The software Unibus/Qbus map is allocated now if support for
X+ * 18 bit controllers in a 22 bit system has been selected. This buffer must
X+ * reside _entirely_ within the low 256kb of memory. A 10kb buffer is
X+ * allocated, this is sufficient to handle 'dump', 'restor' and the default
X+ * blocking factor of 'tar' (20 sectors).
X+ *
X+ * NOTE: There is only 1 software map. Multiple 18 bit controllers will
X+ * have their access to the 'bounce buffer' single threaded by the soft
X+ * map allocation routine sofub_alloc() in machdep.c.
X+ *
X+ * For more details see machdep.c.
X+ */
X+
X+ #ifdef SOFUB_MAP
X+ #define B (10240+64)
X+
X+ sofub_size = (unsigned) B;
X+
X+ if ((sofub_base = malloc(coremap, btoc(B))) == 0)
X+ panic("sofmap"); /* Paranoia */
X+ else if (((sofub_base + btoc(B)) >> 10) > 3) /* > 256kb! */
X+ {
X+ printf("sofmap > 256kb\n");
X+ mfree(coremap, btoc(B), sofub_base); /* give it back */
X+ sofub_base = 0;
X+ }
X+ else
X+ {
X+ sofub_addr = sofub_base;
X+ sofub_off = (sofub_base>>10)&3;
X+ }
X+ #undef B
X+ #endif /* SOFUB_MAP */
X
X #ifdef EXTERNALITIMES
X #define C (btoc(ninode * sizeof (struct icommon2)))
X*** /usr/src/sys/pdp/mch_click.s.old Tue Mar 16 18:42:53 1993
X--- /usr/src/sys/pdp/mch_click.s Wed Nov 22 20:44:50 1995
X***************
X*** 3,9 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)mch_click.s 1.3 (2.11BSD GTE) 3/16/93
X */
X
X #include "DEFS.h"
X--- 3,9 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)mch_click.s 1.4 (2.11BSD GTE) 1995/11/22
X */
X
X #include "DEFS.h"
X***************
X*** 99,105 ****
X mov (sp)+,KDSA5 / restore seg5
X jmp cret
X
X- #ifdef INET
X /*
X * copyv(fromaddr, toaddr, count)
X * virtual_addr fromaddr,
X--- 99,104 ----
X***************
X*** 172,179 ****
X 4:
X clr r0 / clear r0 and r1 (why?)
X rts pc / and return
X- #endif
X-
X
X /*
X * fmove(par, pdr, from, to, length)
X--- 171,176 ----
X*** /usr/src/sys/pdp/machdep.c.old Sun Jan 3 00:42:07 1993
X--- /usr/src/sys/pdp/machdep.c Mon Nov 27 20:01:26 1995
X***************
X*** 3,9 ****
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)machdep.c 2.1 (2.11BSD) 1/3/93
X */
X
X #include "param.h"
X--- 3,9 ----
X * All rights reserved. The Berkeley software License Agreement
X * specifies the terms and conditions for redistribution.
X *
X! * @(#)machdep.c 2.2 (2.11BSD) 1995/11/22
X */
X
X #include "param.h"
X***************
X*** 15,20 ****
X--- 15,21 ----
X #include "buf.h"
X #include "map.h"
X #include "uba.h"
X+ #include "syslog.h"
X
X #ifdef CURRENTLY_EXPANDED_INLINE
X /*
X***************
X*** 260,262 ****
X--- 261,485 ----
X bp->b_flags &= ~B_UBAREMAP;
X }
X }
X+
X+ #define SOFUB_DEBUG
X+
X+ #ifdef SOFUB_MAP
X+ /*
X+ * Implement soft unibus map for 18 bit controllers present in a
X+ * 22-bit q-bus systems. Initially only used by the tape driver
X+ * (for tar and dump) but when this was integrated into 2.11BSD changes
X+ * were made to support the RX02 driver as well.
X+ *
X+ * Adapted to 2.11BSD and rather heavily revised by:
X+ *
X+ * steven schultz (sms)
X+ * GTE Government Systems
X+ *
X+ * from the original by:
X+ *
X+ * matt jacob
X+ * University of California at Davis
X+ * 22-Nov-84
X+ */
X+
X+ #define QMEG ((long)(256L*1024L))
X+ #define exad(x,y) ((long)((long)x<<16|(unsigned)y))
X+ #define B_UBUF exad(bp->b_xmem,(u_int)bp->b_un.b_addr)
X+ #define E_UBUF (B_UBUF + (long) bp->b_bcount)
X+
X+ size_t sofub_addr, sofub_off;
X+ memaddr sofub_base;
X+ unsigned sofub_size;
X+
X+ static int bpxm, bpadd;
X+ static int sofub_flags;
X+ #define BUSY 1
X+ #define WANTED 2
X+
X+ /*
X+ * sofub_alloc - allocate usage of soft unibus map
X+ *
X+ * called from strategy routine of device drivers.
X+ *
X+ * returns 0 if not okay, else returns 1.
X+ * expects a buffer pointer as an argument
X+ * expects all addresses in bp already validated (by physio)
X+ * sets appropriate bits and calls iodone if error
X+ */
X+
X+ int
X+ sofub_alloc(bp)
X+ register struct buf *bp;
X+ {
X+ register int s;
X+ register int count;
X+ size_t uaddr;
X+ memaddr sbase;
X+
X+ if (E_UBUF < QMEG)
X+ return(1); /* okay, < 256kb */
X+ else if (bp->b_bcount > sofub_size)
X+ {
X+ log(LOG_ERR, "I/O >10kb on %d,%d\n",
X+ major(bp->b_dev),minor(bp->b_dev));
X+ bp->b_flags |= B_ERROR;
X+ bp->b_error = EFAULT;
X+ iodone(bp);
X+ return(0);
X+ }
X+
X+ s = splbio();
X+
X+ while (sofub_flags & BUSY)
X+ {
X+ #ifdef SOFUB_DEBUG
X+ printf("sofub_alloc sleep\n");
X+ #endif
X+ sofub_flags |= WANTED;
X+ sleep((caddr_t) &sofub_flags,PSWP+2);
X+ }
X+
X+ sofub_flags |= BUSY;
X+ splx(s);
X+
X+ /*
X+ * now calculate virtual address of user buffer...
X+ */
X+
X+ sofub_off = (size_t)((u_int)bp->b_un.b_addr & 077);
X+ sofub_addr = (size_t)(((u_int)bp->b_un.b_addr>>6)&01777) | (((int) bp->b_xmem) << 10);
X+
X+ bpadd = (u_int)bp->b_un.b_addr;
X+ bpxm = bp->b_xmem;
X+
X+ /*
X+ * if this is a write, we have to fetch data from user buffer first
X+ */
X+
X+ if ((bp->b_flags & B_READ) == 0)
X+ {
X+ count = bp->b_bcount;
X+ uaddr = sofub_addr;
X+ sbase = sofub_base;
X+
X+ /* first, copy all 8kb-1click segments.. */
X+
X+ s = spl5();
X+
X+ while (count > (8192-64))
X+ {
X+ copyv(uaddr,sofub_off,sbase,0,(8192-64));
X+ count -= (8192-64);
X+ uaddr += 0177; /* add 8192-64 bytes */
X+ sbase += 0177;
X+ }
X+ /* copy last residual segment */
X+
X+ copyv(uaddr,sofub_off,sbase,0,count);
X+ splx(s);
X+ }
X+ /* put in new 18 bit address */
X+
X+ bp->b_un.b_addr = (caddr_t)ctob((long)sofub_base);
X+
X+ /*
X+ * don't turn sofub_base to clicks here
X+ * because half the work is done by
X+ * having it in click form here, i.e.,
X+ * bp->b_xmem would equal
X+ * ctob(x)>>16 (hi six bits of 18)
X+ */
X+
X+ bp->b_xmem = (sofub_base >> 10)&3;
X+ return(1);
X+ }
X+
X+ /*
X+ * sofub_relse - release sofub_map
X+ *
X+ * passed a buffer pointer and a transfer byte count...
X+ * (for use if was a read)
X+ *
X+ * note, we are called from the driver's interrupt service routine.
X+ */
X+
X+ sofub_relse(bp,count)
X+ register struct buf *bp;
X+ register unsigned count;
X+ {
X+ register int s;
X+ size_t uaddr;
X+ memaddr sbase;
X+ long ebuf = E_UBUF;
X+ caddr_t newaddr;
X+ u_int newxmem;
X+
X+ /*
X+ * If the transfer was entirely below or above the 'bounce buffer' then
X+ * this I/O request was done without the soft map being allocated.
X+ */
X+ if (ebuf < ctob((long)sofub_base) ||
X+ ebuf > ctob((long)sofub_base) + sofub_size)
X+ return;
X+ #ifdef SOFUB_DEBUG
X+ if (ebuf > QMEG) /* Can't happen, transfer over 256kb */
X+ panic("sofub_relse");
X+ #endif
X+
X+ /*
X+ * Next make sure that the I/O request is the one which currently has the
X+ * map allocated to it.
X+ */
X+ newaddr = (caddr_t)((sofub_addr << 6) | sofub_off);
X+ newxmem = ((u_int)sofub_addr >> 10) & 077;
X+
X+ if (newaddr != bpadd || newxmem != bpxm)
X+ {
X+ #ifdef SOFUB_DEBUG
X+ printf("sofub_relse: new %o:%o, old %o:%o\n",
X+ newxmem, newaddr, bpxm, bpadd);
X+ #endif
X+ bp->b_flags |= B_ERROR;
X+ bp->b_error = EFAULT;
X+ return;
X+ }
X+
X+ if (bp->b_flags & B_READ)
X+ {
X+ uaddr = sofub_addr;
X+ sbase = sofub_base;
X+
X+ /*
X+ * first, copy all 8kb-1click segments..
X+ */
X+ s = spl5();
X+ while (count > (8192-64))
X+ {
X+ copyv(sbase,0,uaddr,sofub_off,(8192-64));
X+ count -= (8192-64);
X+ uaddr += 0177; /* add 8192-64 bytes */
X+ sbase += 0177;
X+ }
X+ /*
X+ * copy last residual segment
X+ */
X+ copyv(sbase,0,uaddr,sofub_off,count);
X+ splx(s);
X+ }
X+
X+ bp->b_un.b_addr = newaddr;
X+ bp->b_xmem = newxmem;
X+
X+ sofub_flags &= ~BUSY;
X+
X+ if (sofub_flags & WANTED)
X+ {
X+ #ifdef SOFUB_DEBUG
X+ printf("sofub_relse: wakeup\n");
X+ #endif
X+ sofub_flags &= ~WANTED;
X+ wakeup((caddr_t) &sofub_flags);
X+ }
X+ }
X+ #endif /* SOFUB_MAP */
X*** /VERSION.old Tue Nov 21 20:28:28 1995
X--- /VERSION Mon Nov 27 20:03:08 1995
X***************
X*** 1,4 ****
X! Current Patch Level: 279
X
X 2.11 BSD
X ============
X--- 1,4 ----
X! Current Patch Level: 280
X
X 2.11 BSD
X ============
SHAR_EOF
chmod 644 '/tmp/patch.280'
fi
exit 0
# End of shell archive