Commit Graph

755 Commits

Author SHA1 Message Date
Bruce Evans
a722b904d7 Fake a call frame for traps so that `gdb -k' can report where fatal
traps occurred.  This also helps ddb backtrace through trap frames.
Backtracing through syscall and interrupt frames still doesn't work
but it is relatively unimportant and more expensive to fix.
1995-08-15 19:23:33 +00:00
John Dyson
8966b85c8f Make the spl oriented inline functions less likely to allow
potentially volatile memory to be kept in registers during
the "call" (inline expansion.)  Do the same for pmap_update.
1995-08-08 04:50:52 +00:00
David Greenman
a705fd3e48 Fix a bug in my disabled version of trap_pfault()...curpcb may be NULL even
when curproc isn't. This condition occurs at system startup and perhaps
at other times.
1995-07-30 17:49:24 +00:00
Bruce Evans
28f8db1403 Eliminate sloppy common-style declarations. There should be none left for
the LINT configuation.
1995-07-29 11:44:31 +00:00
David Greenman
6b837e5dda Fixed bug I introduced with the memory-size code rewrite that broke
floppy DMA buffers...use avail_start not "first". Removed duplicate
(and wrong) declaration of phys_avail[].

Submitted by:	Bruce Evans, but fixed differently by me.
1995-07-28 11:21:06 +00:00
Bruce Evans
8089a0432e Fix bogus constraint "i" that only worked with -O. The cases where it
didn't work are somewhat bogusly optimized away before the constraint
is checked.  We still expect constants passed to inline functions to
remain constant, but if the compiler ever decides that they aren't
constant then it will just generate slightly slower code instead of
an error.
1995-07-25 21:28:47 +00:00
David Greenman
e9857eee2b Rewrote memory sizing code to generally deal with holes in extended memory.
This code change should allow certain Compaq machines with a 128K hole
at 16MB to work.
1995-07-19 06:37:12 +00:00
Peter Wemm
1174c7d121 This fixes a compiler warning, and a cosmetic problem with the linux
emul code when compiling with "options KTRACE".
ktrsyscall() was expecting an array of integers, this was passing the
address of a structure containing an array of integers..
The cosmetic problem was that it was calling the "enter syscall"
trace hook twice - this looks like a cut/paste error/typo.
1995-07-16 14:10:55 +00:00
Poul-Henning Kamp
8a7580c3fe Reviewed by: phk
Submitted by:	Andrew McRae <andrew@mega.com.au>

Some initial commits from the pcmcia stuff, to make life easier for the
testers.

We will use the name "pccard" since that is really the buzzword at present.
1995-07-16 10:45:06 +00:00
Poul-Henning Kamp
7a2dada545 Make the bootinfo structure visible from sysctl.
This can be used in libdisk to guess a better bios-geometry.
1995-07-16 10:33:38 +00:00
Joerg Wunsch
446cee6e6d Include ``options POWERFAIL_NMI'' for owners of older (non-apm)
notebooks where a powerfail condition (external power drop; battery
state low) is signalled by an NMI.  Makes it beep instead of panicing.

Reviewed by:	davidg
1995-07-16 10:31:26 +00:00
David Greenman
9e951f36f1 Truncate the fault address to a page boundry when calling vm_fault(). The
last change to fix the fault-twice bug with page tables wasn't quite
complete.
1995-07-16 05:39:22 +00:00
David Greenman
4a67eb7121 Fixed bug that caused page tables to be faulted twice instead of once.
Submitted by:	John Dyson
1995-07-14 09:25:51 +00:00
David Greenman
24a1cce34f NOTE: libkvm, w, ps, 'top', and any other utility which depends on struct
proc or any VM system structure will have to be rebuilt!!!

Much needed overhaul of the VM system. Included in this first round of
changes:

1) Improved pager interfaces: init, alloc, dealloc, getpages, putpages,
   haspage, and sync operations are supported. The haspage interface now
   provides information about clusterability. All pager routines now take
   struct vm_object's instead of "pagers".

2) Improved data structures. In the previous paradigm, there is constant
   confusion caused by pagers being both a data structure ("allocate a
   pager") and a collection of routines. The idea of a pager structure has
   escentially been eliminated. Objects now have types, and this type is
   used to index the appropriate pager. In most cases, items in the pager
   structure were duplicated in the object data structure and thus were
   unnecessary. In the few cases that remained, a un_pager structure union
   was created in the object to contain these items.

3) Because of the cleanup of #1 & #2, a lot of unnecessary layering can now
   be removed. For instance, vm_object_enter(), vm_object_lookup(),
   vm_object_remove(), and the associated object hash list were some of the
   things that were removed.

4) simple_lock's removed. Discussion with several people reveals that the
   SMP locking primitives used in the VM system aren't likely the mechanism
   that we'll be adopting. Even if it were, the locking that was in the code
   was very inadequate and would have to be mostly re-done anyway. The
   locking in a uni-processor kernel was a no-op but went a long way toward
   making the code difficult to read and debug.

5) Places that attempted to kludge-up the fact that we don't have kernel
   thread support have been fixed to reflect the reality that we are really
   dealing with processes, not threads. The VM system didn't have complete
   thread support, so the comments and mis-named routines were just wrong.
   We now use tsleep and wakeup directly in the lock routines, for instance.

6) Where appropriate, the pagers have been improved, especially in the
   pager_alloc routines. Most of the pager_allocs have been rewritten and
   are now faster and easier to maintain.

7) The pagedaemon pageout clustering algorithm has been rewritten and
   now tries harder to output an even number of pages before and after
   the requested page. This is sort of the reverse of the ideal pagein
   algorithm and should provide better overall performance.

8) Unnecessary (incorrect) casts to caddr_t in calls to tsleep & wakeup
   have been removed. Some other unnecessary casts have also been removed.

9) Some almost useless debugging code removed.

10) Terminology of shadow objects vs. backing objects straightened out.
    The fact that the vm_object data structure escentially had this
    backwards really confused things. The use of "shadow" and "backing
    object" throughout the code is now internally consistent and correct
    in the Mach terminology.

11) Several minor bug fixes, including one in the vm daemon that caused
    0 RSS objects to not get purged as intended.

12) A "default pager" has now been created which cleans up the transition
    of objects to the "swap" type. The previous checks throughout the code
    for swp->pg_data != NULL were really ugly. This change also provides
    the rudiments for future backing of "anonymous" memory by something
    other than the swap pager (via the vnode pager, for example), and it
    allows the decision about which of these pagers to use to be made
    dynamically (although will need some additional decision code to do
    this, of course).

13) (dyson) MAP_COPY has been deprecated and the corresponding "copy
    object" code has been removed. MAP_COPY was undocumented and non-
    standard. It was furthermore broken in several ways which caused its
    behavior to degrade to MAP_PRIVATE. Binaries that use MAP_COPY will
    continue to work correctly, but via the slightly different semantics
    of MAP_PRIVATE.

14) (dyson) Sharing maps have been removed. It's marginal usefulness in a
    threads design can be worked around in other ways. Both #12 and #13
    were done to simplify the code and improve readability and maintain-
    ability. (As were most all of these changes)

TODO:

1) Rewrite most of the vnode pager to use VOP_GETPAGES/PUTPAGES. Doing
   this will reduce the vnode pager to a mere fraction of its current size.

2) Rewrite vm_fault and the swap/vnode pagers to use the clustering
   information provided by the new haspage pager interface. This will
   substantially reduce the overhead by eliminating a large number of
   VOP_BMAP() calls. The VOP_BMAP() filesystem interface should be
   improved to provide both a "behind" and "ahead" indication of
   contiguousness.

3) Implement the extended features of pager_haspage in swap_pager_haspage().
   It currently just says 0 pages ahead/behind.

4) Re-implement the swap device (swstrategy) in a more elegant way, perhaps
   via a much more general mechanism that could also be used for disk
   striping of regular filesystems.

5) Do something to improve the architecture of vm_object_collapse(). The
   fact that it makes calls into the swap pager and knows too much about
   how the swap pager operates really bothers me. It also doesn't allow
   for collapsing of non-swap pager objects ("unnamed" objects backed by
   other pagers).
1995-07-13 08:48:48 +00:00
Stefan Eßer
d2a2d5ec41 The PCI config mechanism 1 test failed for the Intel Aries.
Make it less strict ...

Submitted by:	NIIMI Satoshi <sa2c@and.or.jp>
1995-06-30 16:11:42 +00:00
Stefan Eßer
0847c06d2e PCI configuration mechanism now determined by a method, that doesn't
fail on new hardware (Compaq Prolinea and Compaq Prosignea), and that
doesn't erroneously identify old mech. 2 chip sets as using mech. 1.
(See section 3.6.4.1.1 of the PCI bus specs rev. 2.0)
1995-06-28 15:54:57 +00:00
David Greenman
338cd8f6be Killed redundant vnode_pager_umount() call. This is already done at
FS unmount time.
1995-06-28 04:46:11 +00:00
David Greenman
53b5ed936e Make path to kernel absolute if it is passed in relative. This fixes
a related bug in some of the new 'foo'boot bootstrap code that has been
added over the past months. This change makes it no longer necessary
for the bootstrap to fix up the path (i.e. it can be removed).
1995-06-28 04:42:25 +00:00
Bruce Evans
943c18018b Fix standards conformance bugs in <signal.h>:
include/signal.h:
There was massive namespace pollution from including <sys/types.h>.
POSIX functions were declared even when _ANSI_SOURCE is defined.

sys.sys/signal.h:
NSIG was declared even if _ANSI_SOURCE or _POSIX_SOURCE is defined.
sig_atomic_t wasn't declared if _POSIX_SOURCE is defined.
Declare a typedef for signal handling functions and use it to
unobfuscate declarations and to avoid half-baked function types
that cause unwanted compiler warnings at certain warning levels.
Fix confusing comment about SA_RESTART.

sys/i386/include/signal.h:
This has to be included to get the declaration of sig_atomic_t even
when _ANSI_SOURCE is defined, so be more careful about polluting
the ANSI namespace.

Uniformize idempotency ifdefs.
1995-06-28 02:14:13 +00:00
Bruce Evans
4ebf8117df Partially fix `sysctl machdep.console_device'. The fix will be complete
when syscons stops mapping the console to minor MAXCONS.  There is
usually no corresponding device in /dev, and the correct device has
minor 0.

cons.c:
Initialize cn_tty properly, so that CPU_CONSDEV can work.
Comment about too many variants of the console tty pointer.

machdep.c:
Return device NODEV and not error EFAULT when there is no console device.
1995-06-26 07:39:52 +00:00
Bruce Evans
6f5014b462 Convert to ANSI C: change #endif THING to #endif /* THING */.
Fix one such THING in code to match comment.
Sort IO_GSC* into numeric order and update comments about the gaps.
Sort common SCSI addresses into alphabetical order.
Remove bogus comments about com ports having i/o size 4.
Uniformize whitespace.
Uniformize case in hex digits.

This file is very incomplete.  In particular, it doesn't mention any
network cards.  This doesn't matter much for the base addresses, but
it means that the comments about which addresses are free are mostly
bogus.  The i/o sizes are unreliable because of split address ranges
for many devices (VGA, wd).  The i/o sizes are incomplete.  In
particular, there are no sizes for SCSI controllers.  The bt driver
still returns a truth value instead of a size.
1995-06-14 07:38:31 +00:00
Rodney W. Grimes
d3628763db Merge RELENG_2_0_5 into HEAD 1995-06-11 19:33:05 +00:00
Rodney W. Grimes
9b2e535452 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
David Greenman
ac8d676972 Fix setdumpdev():
- the major number wasn't checked, so accesses beyond the end of bdevsw[]
  were possible.  Bogus major numbers are easy to get because `sysctl -w'
  doesn't handle dev_t's reasonably - it doesn't convert names to dev_t's
  and it converts the number 1025 to the dev_t 0x35323031.
- Driver d_psize() functions return -1 to indicate error ENXIO or ENODEV
  (the interface is too braindamaged to say which).  -1 was interpreted
  as a size and resulted in the bogus error ENOSPC.
- it was possible to set the dumpdev for devices without a d_psize()
  function.  This is equivalent to setting the dumpdev to NODEV except
  it confuses sysctl.
- change a 512 to DEV_BSIZE.  There is an official macro dtoc() for
  converting "pages" to disk blocks but it is never used in /usr/src/sys.
  There is much confusion between PAGE_SIZE sized pages and NBPG sized
  pages.  Maxmem consists of both.

Not fixed:
- there is nothing to invalidate the dumpdev if the media goes away.
  This reduces the benefits of the early calculation of dumplo.  Bounds
  checking in the dump routines is relied on to reduce the risk of
  damage and little would be lost by relying on the dump routines to
  calculate dumplo.
- no attempt is made to stay away from the start of the device to
  avoid clobbering labels.

Fix wrong && anachronistic comment about the type of bootdev.

Reviewed by:	davidg
Submitted by:	Bruce Evans
1995-05-29 04:08:13 +00:00
David Greenman
b64b660cd3 Made "NMBCLUSTERS" calculation dynamic and fixed bogus use of "NMBCLUSTERS"
in machdep.c (it should use the global nmbclusters). Moved the calculation
of nmbclusters into conf/param.c (same place where nmbclusters has always
been assigned), and made the calculation include an extra amount based
on "maxusers". NMBCLUSTERS can still be overrided in the kernel config
file as always, but this change will make that generally unnecessary. This
fixes the "bug" reports from people who have misconfigured kernels seeing
the network hang when the mbuf cluster pool runs out.

Reviewed by:	John Dyson
1995-05-25 07:41:28 +00:00
David Greenman
5eb46edfb0 Added "BROKEN_KEYBOARD_RESET" option to disable using the keyboard reset
in cpu_reset(). Some MBs don't deal with this properly.

Submitted by:	Rod Grimes
1995-05-18 09:17:07 +00:00
David Greenman
30fd0561cd Added apersand constraint to make sure that the source and destination
registers aren't combined.

Reviewed by:	Bruce Evans and David Greenman
Submitted by:	John Dyson
1995-05-14 22:25:11 +00:00
David Greenman
a401ebbe32 Changed swap partition handling/allocation so that it doesn't
require specific partitions be mentioned in the kernel config
file ("swap on foo" is now obsolete).

From Poul-Henning:

The visible effect is this:

As default, unless
        options "NSWAPDEV=23"
is in your config, you will have four swap-devices.
You can swapon(2) any block device you feel like, it doesn't have
to be in the kernel config.

There is a performance/resource win available by getting the NSWAPDEV right
(but only if you have just one swap-device ??), but using that as default
would be too restrictive.

The invisible effect is that:

Swap-handling disappears from the $arch part of the kernel.
It gets a lot simpler (-145 lines) and cleaner.

Reviewed by:	John Dyson, David Greenman
Submitted by:	Poul-Henning Kamp, with minor changes by me.
1995-05-14 03:00:10 +00:00
Jordan K. Hubbard
c25cfd0b0d "1 easy fix in 10 excrutiating steps"
A phone call from Manfred quickly pointed up the fact that I got the conflict
check backwards.  NOW we implement the conflict checking correctly!  Wheesh!
1995-05-13 00:09:38 +00:00
Garrett Wollman
5bb4f73817 The death of `options NODUMP'. Now the dump area can be dynamically
configured (and unconfigured) on the fly.  A sysctl(3) MIB variable is
provided to inspect and modify the dump device setting.
1995-05-12 19:17:31 +00:00
Rodney W. Grimes
b2b795f07c Fix -Wformat warnings from LINT kernel. 1995-05-11 19:26:53 +00:00
Bruce Evans
d81fba0cda Add variable `idelayed' and macros setdelayed() and schedsofttty()
to access it.  setdelayed() actually ORs the bits in `idelayed' into
`ipending' and clears `idelayed'.

Call setdelayed() every (normal) clock tick to convert delayed
interrupts into pending ones.

Drivers can set bits in `idelayed' at any time to schedule an interrupt
at the next clock tick.  This is more efficient than calling timeout().
Currently only software interrupts can be scheduled.
1995-05-11 07:44:40 +00:00
Bruce Evans
0ee893eb32 Add loadandclear(). It atomically loads a value from memory, clears the
value in memory and returns the original value.
1995-05-11 07:24:35 +00:00
Jordan K. Hubbard
da8d0268df Pass me the pointed chapeau - this typo somehow got through my testing. 1995-05-11 05:20:43 +00:00
Bill Paul
2c739e6439 If you config a kernel with 'config kernel swap generic' and try to
boot diskless with it, you get a panic because setconf() is only
called for mountroot == ffs_mountroot. It really needs to be called
no matter what manner of rootfs we have. I can't really say if
swapgeneric will work with a CD-ROM though. (I get the feeling I'm
the only one who uses swapgeneric these days anyway.)
1995-05-11 02:50:11 +00:00
Jordan K. Hubbard
9cc347481f Remove all vestiges of the ALLOW_CONFLICT_FOO evil and replace it with
something slightly less evil - a per device conflict flag.
1995-05-11 02:15:55 +00:00
Garrett Wollman
c9cd353a18 Delete two debugging printfs that mistakenly crept in. 1995-05-11 00:16:44 +00:00
Garrett Wollman
748e0b0acc Make networking domains drop-ins, through the magic of GNU ld. (Some day,
there may even be LKMs.)  Also, change the internal name of `unixdomain'
to `localdomain' since AF_LOCAL is now the preferred name of this family.
Declare netisr correctly and in the right place.
1995-05-11 00:13:26 +00:00
David Greenman
85eaa94715 Correct the definition for the (unused) cpu_setstack(). 1995-05-04 07:50:06 +00:00
David Greenman
6486b7f194 Added a memcpy() routine. 1995-05-02 05:20:26 +00:00
Poul-Henning Kamp
807afe4fa5 A missing 'and', probably my fault.
Submitted by:	Ed Hudson <elh@p5.spnet.com>
1995-05-02 04:40:06 +00:00
John Dyson
641a27e68b Fixed a problem that can cause left-over pv_entries and as
as side-effect, removed some legacy code that was necessary
when we called vm_fault inside of vm_fault_quick instead of using
the kernel/user space byte move routines.
1995-05-01 23:32:30 +00:00
Rodney W. Grimes
2320728f46 Add outb to keyboard controller to do a cpu_reset, this fixes 2 known
cases of motherboards that failed to reboot.
1995-04-26 07:38:35 +00:00
Poul-Henning Kamp
58e81aafbb Add support for MFS root filesystem. 1995-04-25 03:41:12 +00:00
Poul-Henning Kamp
d3f4d460f8 Added "bio" to matcd. 1995-04-24 05:33:59 +00:00
Julian Elischer
6944abf1d7 hmm spotted a difference resulting from a merge I didn't examine close enough 1995-04-23 09:17:24 +00:00
Julian Elischer
73bac981dd include hooks for EISA configuration (possibly wrong :) 1995-04-23 09:13:08 +00:00
Poul-Henning Kamp
94624c5572 Forgot this commit the other day. The receiving end of the "boot -C" option. 1995-04-23 04:14:41 +00:00
Bill Paul
31e0d8b925 Tiny printf formatting change: if we have no cpu_vendor or cpu_id info,
don't generate a newline. (Yeah, I'm picking nits, but that empty line
I get on my 386 just looks dumb, okay? :)
1995-04-22 03:58:46 +00:00
Poul-Henning Kamp
804e33a872 Add wd2 and wd3 as swap-devices too. 1995-04-20 06:05:17 +00:00
Rodney W. Grimes
781434c1fc Reapply my fix for this:
Output the CPU features line during the probe on a seperate line, for
folks with lots of features the output use to wrap and look ugle.
1995-04-18 23:55:26 +00:00
Poul-Henning Kamp
8425684b90 Print the BIOS geometries in a human-readable format. 1995-04-17 16:49:50 +00:00
David Greenman
857f4d44be Remove gratuitous waste of 2K of memory for BIOS variables. We never load
the kernel at 0-640k; we haven't had the ability to do that since before
2.0R. Furthermore, I fail to see how putting an instruction at 0 and then
doing a .org 0x500 is going to prevent the stuff from getting clobbered
in the first place; a.out is just too stupid to know about sparse address
spaces.
1995-04-16 10:12:16 +00:00
Bruce Evans
7897b3ce69 Don't waste time sending an EOI to ICU1 if option AUTO_EOI_1 is defined.
Previously, this worked right if both AUTO_EOI_1 and AUTO_EOI_2 are
defined, but not if AUTO_EOI_1 is defined and AUTO_EOI_2 is not defined.
The latter case should be the default.  DUMMY_NOPS should be the default
too.  Currently there are only two NOPs slowing down rtcin() (although
there are no delays in writertc()) and several FASTER_NOPs slowing down
interrupt handling in vector.s.

Fix stack offsets for the (previously) unused untested
FAST_INTR_HANDLER_USES_ES case.
1995-04-15 21:32:18 +00:00
Peter Dufault
8db34c841e Add scsi target. Add "after config" call to autoconf so that scsi
targets will be configured after all scsi busses have been configured.
1995-04-14 15:13:26 +00:00
Bill Paul
09a901eb60 Hopefully I won't get flamed for this: insert a few more #if defined(I486_CPU)
and #if defined (I586_CPU) thingies into identifycpu() so that we only
compile in what's actually needed for a given CPU. So far as I can tell,
none of my 386 machines generate a cpu_vendor code, so I made the extra vendor
and feature line conditional on I486_CPU and I586_CPU. (Otherwise we
print out a blank line which looks silly.)
1995-04-14 02:06:00 +00:00
Bill Paul
695e4afe85 This a subtle reminder to people that not everybody compiles their
kernels with 'options I586_CPU.'

The declaration for pentium_mhz is hidden inside an #ifdef I586_CPU,
but machdep.c refers to it whether I586_CPU is defined or not. This
temporary hack puts the offending code inside an #ifdef I586_CPU as
well so that a kernel without it will successfully compile.

I must emphasize the word 'temporary:' somebody needs to seriously
beat on the identifycpu() function with an #ifdef stick so that
I386_CPU, I486_CPU and I586_CPU will do the right things.
1995-04-13 04:55:35 +00:00
Garrett Wollman
6c0081e92b Add a class field to devconf and mst drivers.
For those where it was easy, drivers were also fixed to call
dev_attach() during probe rather than attach (in keeping with the
new design articulated in a mail message five months ago).  For
a few that were really easy, correct state tracking was added as well.
The `fd' driver was fixed to correctly fill in the description.
The CPU identify code was fixed to attach a `cpu' device.  The code
was also massively reordered to fill in cpu_model with somethingremotely
resembling what identifycpu() prints out.  A few bytes saved by using
%b to format the features list rather than lots of ifs.
1995-04-12 20:48:13 +00:00
Poul-Henning Kamp
8d89e37c73 I got that wrong,
lnc0	@ 0x280
	lnc1	@ 0x300

moved le0 into sorted sequence.
1995-04-10 19:13:51 +00:00
Poul-Henning Kamp
1f9e6f1901 lnc0 is @ 0x300
lnc1 is @ 0x280
1995-04-10 19:12:29 +00:00
Poul-Henning Kamp
17755ac806 Changes to make FreeBSD use a CDROM as rootdev, for installation purposes.
If "BOOTCDROM" is defined, you get this pretty special case stuff.
1995-04-10 07:44:31 +00:00
David Greenman
fcb5be87ad Cosmetic changes. 1995-04-09 05:40:38 +00:00
Poul-Henning Kamp
63373752ea Move default address of lnc0 to 0x300. Luigi Rizzo said that his card
cannot even go below 0x300...
1995-04-08 21:41:52 +00:00
Joerg Wunsch
4fb0b0de3e Implement a simple hook (or hack?) to allow graphics device console
drivers to protect DDB from being invoked while the console is in
process-controlled (i.e., graphics) mode.

Implement the logic to use this hook from within pcvt.  (I'm sure
Søren will do the syscons part RSN).

I've still got one occasion where the system stalled, but my attempts
to trigger the situation artificially resulted int the expected
behaviour.  It's hard to track bugs without the console and DDB
available. :-/
1995-04-08 21:32:11 +00:00
Poul-Henning Kamp
12cfa43650 Added the "eg0" interface driver for the 3Com "3c505" or "etherlink/+"
card.  This is the braindamaged card with the 80186 CPU on it.  It is
slow, probably not very good after all, but hey, if you have one lying
around doing nothing anyway...

Added the "zp0" driver to GENERIC.
1995-04-08 09:36:04 +00:00
Andrey A. Chernov
a30090c5f7 Print "on isa" for devices with port==0 per Bruce suggestion 1995-04-06 13:55:56 +00:00
Rodney W. Grimes
5f34517b1c Output the CPU features line during the probe on a seperate line, for
folks with lots of features the output use to wrap and look ugle.

Reviewed by:	phk
1995-04-06 07:55:42 +00:00
Andrey A. Chernov
29ecb6a386 Print "on motherboard" for isa? devices with id_iobase == 0 1995-04-04 22:48:40 +00:00
David Greenman
7b0047e213 Made pmap_testbit a static function. 1995-03-30 08:55:39 +00:00
Rodney W. Grimes
ad0c439a34 Submitted by: Mahesh Neelakanta <mahesh@gcomm.com>
Change I/O address of Intel EtherExpress driver (ix0) from 0x280 to
0x300.
1995-03-30 00:20:08 +00:00
Bruce Evans
3aa12267a5 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) that I didn't notice when I fixed
"all" such warnings before.
1995-03-28 07:58:53 +00:00
David Greenman
1ae89ac36a Removed declaration of pmap_changebit()...it is no longer exported.
Submitted by:	John Dyson
1995-03-26 23:42:55 +00:00
David Greenman
880d1d842e Changed pmap_changebit() into a static function as it always should
have been.

Submitted by:	John Dyson
1995-03-26 23:42:07 +00:00
Steven Wallace
c27bd0ad13 Do a printf("\n") after all conditional printfs have been done so that
a newline is always done.  Remove \n's from last conditonal printfs.
1995-03-25 05:54:33 +00:00
Stefan Eßer
0f29bf015c Correct pcibus_setup() to return as soon as one test succeeds. 1995-03-22 21:35:39 +00:00
Stefan Eßer
9c6f3c132b Delete PCI PCI bridge simulator code ...
Submitted by:	Wolfgang Stanglmeier <wolf@kintaro.cologne.de>
1995-03-22 19:51:59 +00:00
Stefan Eßer
33865a313c Remove spurious declaration of printf().
Submitted by:	Michael Reifenberger <root@rz-wb.fh-sw.de>
1995-03-22 10:52:05 +00:00
Stefan Eßer
5b3f532eb1 New ISA specific PCI code.
Supports shared PCI interrupts.

Submitted by:	Wolfgang Stanglmeier <wolf@kintaro.cologne.de>
1995-03-21 23:06:07 +00:00
David Greenman
f550a707bd Added a new version of trap_pfault() that disallows kernel page faults
to the user address space unless pcb_onfault is set. The code is currently
commented out because iBCS2 and process debugging parts of the kernel
need to be changed/fixed first.
1995-03-21 07:16:12 +00:00
David Greenman
c6d5f3ac3e Changed some #ifdef DIAGNOSTIC code that I added to be #ifdef DEBUG. 1995-03-21 07:02:51 +00:00
David Greenman
edf8a81561 Removed redundant newlines that were in some panic strings. 1995-03-19 14:29:26 +00:00
Rodney W. Grimes
f8e028be26 Add Intel EtherExpress16 (ix0) driver.
Reviewed by:
Submitted by:
Obtained from:
1995-03-18 08:12:48 +00:00
David Greenman
3e3eb41588 Call dev_shutdownall() just after unmounting filesystems. 1995-03-17 04:19:19 +00:00
Bruce Evans
b5e8ce9f12 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) and most of the warnings from
`gcc -Wnested-externs'.  Fix all the bugs found.  There were no serious
ones.
1995-03-16 18:17:34 +00:00
Stefan Eßer
9b2fa02dd9 Prepare for shared interrupts (required by the new PCI code that adds
support for PCI PCI bridges, e.g. found on 4ch. Ethernet cards).

Submitted by:	Wolfgang Stanglmeier <wolf@kintaro.cologne.de>
1995-03-16 17:31:19 +00:00
Atsushi Murai
9cfb8f7ee9 Adding tunnel pseudo-device for Network Installation with User process PPP.
Reviewed by:	amruai@spec.co.jp
1995-03-12 12:10:35 +00:00
Poul-Henning Kamp
fc20488fba Moved bb stuff to support.s per Bruces suggestion. 1995-03-11 03:49:50 +00:00
Poul-Henning Kamp
9eefa8bfc4 Add a dummy ___bb_init_func for BB profiling of the kernel.
To use this: recompile src/gnu/usr.bin/cc, compile your kernel.  The
files you want to profile should be compiled with '-a -g'.  "strip -x"
the kernel and run.  You don't need to profile all files in the kernel.
My next commit is the program to extract the data from the running kernel.
1995-03-10 08:41:26 +00:00
David Greenman
b4abbbcad3 kmem_alloc() returns zero-filled memory; it isn't necessary to bzero()
it.
1995-03-10 08:13:07 +00:00
David Greenman
90c47808bb Removed unnecessary routines vm_get_pmap() and vm_put_pmap().
kmem_alloc() returns zero filled memory, so no need to explicitly
bzero() it.
1995-03-10 08:05:00 +00:00
David Greenman
d8cb3fb153 Increased number of buffers to 1/12 of (page_count - 1024). This makes the
cache minimum closer to 10% in the usual case.
1995-03-07 19:58:02 +00:00
Joerg Wunsch
68cfe626f7 pcvt is still using the XSERVER option; document this. 1995-03-05 22:23:35 +00:00
Bill Paul
bf3e3428b6 Changed the printf()s in npxattach a bit so you don't end up with
messages like this:

wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <ST506>
wd0: size unknown, using BIOS values: 615 cyl, 4 head, 17 sec, bytes/sec 512
npx0 at 0xf0-0xff irq 13 on motherboard
npx0: changing root device to wd0a
^^^^^^

The spurious 'npx0: ' pops up if you have a 386 with a 387 FPU.
1995-03-05 04:06:44 +00:00
David Greenman
812a11a2ec Removed obsolete vtrace() and reorganized a little. 1995-03-04 02:25:36 +00:00
David Greenman
3b7517f887 Preserve reverse link integraty while doing the queue insertion. 1995-03-03 22:14:42 +00:00
David Greenman
9ad19d92e1 Use copyout to install the sigframe rather than directly writing to the
user's stack.
1995-03-03 00:43:08 +00:00
Jordan K. Hubbard
05e1d9d455 Changes to incorporate the Matsushita CDROM driver (otherwise known as
the "Sound blaster CDROM").
Submitted by:	Frank Durda IV <bsdmail@nemesis.lonestar.org>
1995-03-02 04:07:03 +00:00
David Greenman
1d1b971bec Use su/fubyte instead of directly touching the user's address space. 1995-03-01 23:59:21 +00:00
David Greenman
fde2cdc48a Various changes from John and myself that do the following:
New functions create - vm_object_pip_wakeup and pagedaemon_wakeup that
are used to reduce the actual number of wakeups.
New function vm_page_protect which is used in conjuction with some new
page flags to reduce the number of calls to pmap_page_protect.
Minor changes to reduce unnecessary spl nesting.
Rewrote vm_page_alloc() to improve readability.
Various other mostly cosmetic changes.
1995-03-01 22:08:55 +00:00
David Greenman
54ab07303b Slight change to include file order to accommodate upcoming changes. 1995-03-01 21:37:44 +00:00
Bruce Evans
550f8550ec Replace all remaining instances of i386/include' by machine' and fix
nearby #include inconsistencies.
1995-02-26 05:14:53 +00:00
Poul-Henning Kamp
ca063ee672 Change EISA size to 256 instead of 4096.
Neither are correct, but 256 does least damage.
1995-02-25 20:26:14 +00:00
Poul-Henning Kamp
6e65a78aee Read K&R and get the { } right :-) 1995-02-25 18:55:53 +00:00
Poul-Henning Kamp
d8ee5072e3 I belive I finally got the "on eisa" right.
| if (!(isdp->id_iobase & 0xf300)) {
| 	printf(" on motherboard\n");
| } else if (isdp->id_iobase >= 0x1000 &&
| 	!(isdp->id_opbase & 0x300)) {
| 		printf (" on eisa slot %d\n",
| 			isdp->id_iobase >> 12);
| 	} else {
| 		printf (" on isa\n");
| 	}
| }

Based on info in "The undocumented PC" p.165
1995-02-25 18:29:10 +00:00
Stefan Eßer
781d9d4623 Keep PCI_CONF_MODE in a safe place for later reference, if #defined.
Reviewed by:	se
Submitted by:	seb@erix.ericsson.se (Sebastian Strollo)
1995-02-25 17:51:18 +00:00
Bruce Evans
7f3ae831f7 Submitted by: seb@erix.ericsson.se (Sebastian Strollo)
Remove over-cautious early fnop() synchronization.  It caused the probe to
hang on systems without an FPU.
1995-02-23 17:32:38 +00:00
David Greenman
68940ac1a0 Use of vm_allocate() and vm_deallocate() has been deprecated. 1995-02-20 22:23:31 +00:00
Bill Paul
188291d20f Do away with 'options SWAP_GENERIC' once and for all: I get ill
just thinking about it.

Two changes need to be made to allow 'config kernel swap generic' to
work properly without requiring any compile-time flags:

/usr/src/usr.sbin/config/mkswapconf.c: we need to define a dummy stub
for the setconf() function to replace the one in swapgeneric.c that
isn't available in non-generic configurations.

/usr/src/sys/i386/i386/autoconf.c: the -a boot flag causes setroot()
to be skipped and lets setconf() prompt the user for a root device.
If you skip setroot() in a non-generic kernel, you could get severely
hosed. To avoid this, we silently ignore the -a flag if rootdev != NODEV.
(rootdev is always initialized to NODEV in swapgeneric.c, so if
we find that rootdev is something other than NODEV, we know we're
not using a generic configuration.)
1995-02-18 18:05:35 +00:00
Bruce Evans
390784fbeb Undo the busy latch changes made in the previous revision. They broke
some 386/387 systems.

Don't print the IRQ number twice in the boot diagnostics.
1995-02-17 19:38:13 +00:00
Poul-Henning Kamp
648c711bb4 This is the latest version of the APM stuff from HOSOKAWA, I have looked
briefly over it, and see some serious architectural issues in this stuff.

On the other hand, I doubt that we will have any solution to these issues
before 2.1, so we might as well leave this in.

Most of the stuff is bracketed by #ifdef's so it shouldn't matter too much
in the normal case.

Reviewed by:	phk
Submitted by:	HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp>
1995-02-17 02:22:57 +00:00
Bruce Evans
ceb91b3e4a Fix syntax errors in #ifdefed out code. 1995-02-16 13:21:47 +00:00
Joerg Wunsch
c851c2f0ea Include three lines about the pcvt console driver, so we don't ever need
a different config file for it.
1995-02-15 20:38:36 +00:00
David Greenman
919364ea6a Use proc0's proc struct rather than curproc's when calling sync. 1995-02-15 12:27:01 +00:00
David Greenman
7389231d06 Killed the pmap_use_pt and pmap_unuse_pt prototypes as they are now in
machine/pmap.h.
1995-02-15 04:36:31 +00:00
Søren Schmidt
1e1e0b4463 First attempt to run linux binaries. This is only the changes needed to
the generic kernel. The actual emulator is a separate LKM. (not finished
yet, sorry).
Submitted by:	sos@freebsd.org & sef@kithrup.com
1995-02-14 19:23:22 +00:00
Poul-Henning Kamp
ae4c9a0208 Removed a YF comment. 1995-02-14 18:01:24 +00:00
Poul-Henning Kamp
86ca01bcee Whoops! back out last commit partly. 1995-02-14 06:57:45 +00:00
Poul-Henning Kamp
b53d84607c YFfix. 1995-02-14 06:55:42 +00:00
Poul-Henning Kamp
f026fea644 susword -> systm.h 1995-02-14 06:51:31 +00:00
Poul-Henning Kamp
a3dbba7a60 Yves has sent us a ~600 Kb patch, which shuts up gcc entirely for the
entire kernel.
Unfortunately we didn't send him a copy of the style guide before he did it.
I'm trying to find all the benign and downright sound bits and will commit
them without any other explanation than "YF fix" if they are merely cosmetic.

Reviewed by:	phk
Submitted by:	yves@dutncp8.tn.tudelft.nl (Yves Fonk)
1995-02-14 06:00:17 +00:00
David Greenman
17703e4e91 Carefully choose the low limit for number of buffers to acheive the best
performance on small memory machines.
1995-02-12 09:21:04 +00:00
David Greenman
06031f1f3f Fixed a bogus comment and made a stylistic change (testl instead of orl
to test for zero).
1995-02-12 09:13:27 +00:00
Poul-Henning Kamp
499454c6e9 Intels App Note AP-485 applied.
We will now tell a good deal more about the CPU if Intel made it.

What is a i486DX2 Write-Back Enhanced CPU ?
1995-02-11 04:21:24 +00:00
David Greenman
459a929e36 Changed extended memory test so that it's non-destructive and not a
complete test (it never was "complete", which is why it was bogus). Now
only a single longword is checked in each page.
1995-02-10 07:44:03 +00:00
David Greenman
3c632e1f0c Removed obsolete and unused vmtime() function. 1995-02-10 07:17:46 +00:00
David Greenman
b1e4a738e0 Removed unnecessary check for pr_scale in the AST/OWEUPC case. 1995-02-10 06:43:47 +00:00
David Greenman
5a32829d98 Check P_PROFIL flag for profiling rather than pr_scale as it makes more
sense.
1995-02-10 06:25:14 +00:00
Stefan Eßer
6f22585dd4 Initialisation of interrupt masks changed.
Reviewed by:	se
Submitted by:	wolf (Wolfgang Stanglmeier)
1995-02-09 20:16:19 +00:00
Jordan K. Hubbard
11af896263 Add PPP to the generic kernel. Now that Poul has made us all this space,
maybe I can get us back into the slip/ppp game without having to tell users
to reconfigure their kernels all the time! :)
1995-02-09 11:21:07 +00:00
David Greenman
87bc4e696d Mostly cosmetic changes. Use KERNBASE instead of UPT_MAX_ADDRESS in
some comparisons as it is more correct (we want the kernel page tables
included).
Reorganized some of the expressions for efficiency.
Fixed the new pmap_prefault() routine - it would sometimes pick up the
wrong page if the page in the shadow was present but the page in object
was paged out. The routine remains unused and commented out, however.
Explicitly free zero reference count page tables (rather than waiting
for the pagedaemon to do it).

Submitted by:	John Dyson
1995-02-02 08:45:14 +00:00
Stefan Eßer
fe90a500af Reviewed by: se
Submitted by:	wolf (Wolfgang Stanglmeier)
PCI specific code moved to /sys/pci.
1995-02-01 23:11:38 +00:00
Stefan Eßer
ac19f91802 Reviewed by: se
Submitted by:	wolf (Wolfgang Stanglmeier)
New ISA dependend file for PCI bus support.
Replaces sys/i386/pci/pcibios.c.
1995-02-01 23:06:58 +00:00
Bruce Evans
15e633f0d9 Fix disassembly of `bt[crs] $Ib,E'. 1995-01-29 02:38:15 +00:00
Andreas Schulz
aa98692ffb Correct a name of one structure member in the sigaltstack structure.
Now it matches the man page and also the only other commercial implementation
i have found so far ( Solaris 2.x).
Changed the name from ss_base to ss_sp.
1995-01-29 01:19:25 +00:00
Jordan K. Hubbard
f1780a6c25 Add soundblaster CD to generic kernel. Hope this doesn't run us out
of space!
1995-01-28 05:01:43 +00:00
Poul-Henning Kamp
e05407d84b New and far better NCR5380/NCR53400 scsi-driver.
Handles at least Trantor T130 and ProAudioSpectrum adapters.
The pas driver has consequently been removed.
This driver can be configured without without interrupts.

Manpage to follow when PAS16 has been edited in.

Reviewed by:	phk
Submitted by:	Serge Vakulenko, <vak@cronyx.ru>
1995-01-27 07:49:19 +00:00
David Greenman
7a642ab589 Fix from Doug Rabson for a panic related to not initializing the kernel's
PTD.

Submitted by:	 John Dyson
1995-01-26 21:06:40 +00:00
Andrey A. Chernov
87fcda4634 Remove FAT_CURSOR, it is already non-existent during several
last syscons versions
1995-01-26 05:04:37 +00:00
David Greenman
d3a10e2cad Comment out pmap_prefault for the time being (perhaps until after 2.1).
The object_init_pt routine is still enabled and used, however, and this
is where most of the 'pre-faulting' performance improvement comes from.
1995-01-26 01:45:02 +00:00
David Greenman
3edf89fe83 Make sure that the pages being 'pre-faulted' are currently on a queue. 1995-01-26 00:55:03 +00:00
David Greenman
6100ed1d12 Be a bit less fast and loose about setting non-cacheablity of pages. 1995-01-25 22:06:23 +00:00
Bruce Evans
b5d89ca8ad Load the kernel symbol table in the boot loader and not at compile time.
(Boot with the -D flag if you want symbols.)

Make it easier to extend `struct bootinfo' without losing either forwards
or backwards compatibility.

ddb_aout.c:
Get the symbol table from wherever the loader put it.
Nuke db_symtab[SYMTAB_SPACE].

boot.c:
Enable loading of symbols.  Align them on a page boundary.  Add printfs
about the symbol table sizes.
Pass the memory sizes to the kernel.
Fix initialization of `unit' (it got moved out of the loop).
Fix adding the bss size (it got moved inside an ifdef).
Initialize serial port when RB_SERIAL is toggled on.
Fix comments.
Clean up formatting of recently added code.

io.c:
Clean up formatting of recently added code.

netboot/main.c, machdep.c, wd.c:
Change names of bootinfo fields.

LINT:
Nuke SYMTAB_SPACE.
Fix comment about DODUMP.

Makefile.i386:
Nuke use of dbsym.
Exclude gcc symbols from kernel unless compiling with -g.
Remove unused macro.
Fix comments and formatting.

genassym.c:
Generate defines for some new bootinfo fields.  Change names of old ones.

locore.s:
Copy only the valid part of the `struct bootinfo' passed by the loader.
Reserve space for symbol table, if any.

machdep.c:
Check the memory sizes passed by the loader, if any.  Don't use them yet.

bootinfo.h:
Add a size field so that we can resolve some mismatches between the loader
bootinfo and the kernel boot info.  The version number is not so good for
this because of historical botches and because it's harder to maintain.
Add memory size and symbol table fields.  Change the names of everything.

Hacks to save a few bytes:

asm.S, boot.c, boot2.S:
Replace `ouraddr' by `(BOOTSEG << 4)'.

boot.c:
Don't statically initialize `loadflags' to 0.  Disable the "REDUNDANT"
code that skips the BIOS variables.  Eliminate `total'.  Combine some
more printfs.

boot.h, disk.c, io.c, table.c:
Move all statically initialzed data to table.c.

io.c:
Don't put the A20 gate bits in a variable.
1995-01-25 21:40:47 +00:00
Jean-Marc Zucconi
3bc6bf1734 Changed address of the game controller to 0x201 (was 0x200)
joy.c: joystick driver
1995-01-25 20:11:51 +00:00
Paul Richards
94187a78bf is to lnc changes 1995-01-24 20:38:39 +00:00
David Greenman
fff3cea1a9 Moved various pmap 'bit' test/set functions back into real functions; gcc
generates better code at the expense of more of it.

Submitted by:	John Dyson
1995-01-24 09:57:39 +00:00
David Greenman
fbdfe8ac22 Changed buffer allocation policy (machdep.c)
Moved various pmap 'bit' test/set functions back into real functions; gcc
generates better code at the expense of more of it. (pmap.c)
Fixed a deadlock problem with pv entry allocations (pmap.c)
Added a new, optional function 'pmap_prefault' that does clustered page
table preloading (pmap.c)
Changed the way that page tables are held onto (trap.c).

Submitted by:	John Dyson
1995-01-24 09:56:33 +00:00
Bruce Evans
1a0518966d Don't use mi_switch() to terminate cpu_exit(). Calling it just happened to
work (mi_switch() counted the last timeslice again but this didn't affect
the exiting process' rusage because the rusage has already been finalized).

Remove stale comment.
1995-01-21 15:34:03 +00:00
Bruce Evans
cee6d3700d Remove unused definitions of vm statistics counters. Most of the
counting is now done in C.  There are still about 100 unused
definitions for other things.
1995-01-21 15:22:28 +00:00
Bruce Evans
e6891db8c5 Don't count context switches here, they are already counted in mi_switch(). 1995-01-21 15:20:23 +00:00
Andreas Schulz
c82762a9c3 Submitted by: Bruce Evans
Put in the much shorter and cleaner version for the calibrate_cycle_counter
for the Pentium that Bruce suggested. Tested here on my Pentium  and
it works okay.
1995-01-19 22:05:27 +00:00
Bruce Evans
2d2fb1bf6b The %eflags checking introduced in the previous commit was too zealous.
sigreturn() sometimes failed for ordinary returns from signal handlers.
Failures of ordinary returns "can't happen" and are badly handled.
"Temporary" fix: allow users to corrupt PSL_RF.  This is fairly
harmless.  A correct fix would involve saving the old %eflags (and
perhaps the old segment registers) where the user can't get at them.
1995-01-17 01:15:12 +00:00
David Greenman
7082ec8aa5 Fixed some page table reference count problems; these changes may not be
complete, but should be closer to correct than before.
1995-01-15 09:06:23 +00:00
Bruce Evans
20415301cd Fix security holes in sigreturn(), ptrace() and procfs. sigreturn()
attempted to check for insecure and fatal eflags and segment
selectors, but missed many cases and got the IOPL check back to
front.  The other syscalls didn't check at all.

sys_process.c, machdep.c:
Only allow PT_WRITE_U to write to the registers (ordinary and FP).

psl.h, locore.s, machdep.c:
Eliminate PSL_MBZ, PSL_MBO and PSL_USERCLR.  We are not supposed
to assume anything about the reserved bits.  Use PSL_USERCHANGE
and PSL_KERNEL instead.  Rename PSL_USERSET to PSL_USER.

exception.s:
Define a private label for use by doreti when returning to user
mode fails.

machdep.c:
In syscalls, allow changing only the eflags that can be changed on
486's in user mode (no longer attempt to allow benign IOPL changes;
allow changing the nasty PSL_NT; don't allow changing the i586
bits).

Don't attempt to check all the cases involving invalid selectors
and %eip's.  Just check for privilege violations and let the invalid
things cause a trap.

procfs_machdep.c:
Call the ptrace register functions to do all the work for reading
and writing ordinary registers and for single stepping.

trap.c:
Ignore traps caused by PSL_NT being set.  Previously, users could
cause a fatal trap in user mode by setting PSL_NT and executing an
iret, and a fatal trap in kernel mode by setting PSL_NT and making
a syscall.  PSL_NT was cleared too late and not in enough modes to
fix the problem.

Make all traps in user mode (except T_NMI) nonfatal.

Recover from traps caused by attempting to load invalid user
registers in doreti by restarting the traps so that they appear to
occur in user mode.
---

Fix bogons that I noticed while fixing the above:

psl.h:
Fix some comments.

Uniformize idempotency ifdef.

exception.s, machdep.c:
Remove rsvd[0-14].  rsvd0 hasn't been reserved since the 486 came
out.  Replace rsvd0 by `align'.  rsvd[0-11] used wrong (magic
non-unique) trap numbers.  Replace rsvd[1-14] by rsvd.

locore.s:
Enable alignment check flag on 486's and 586's.

machdep.c:
Use a better type for kstack[].

Use TFREGP() to find the registers.

Reformat ptrace functions from SEF to something closer to KNF.

procfs_machdep.c:
The wrong pointer to the registers got fixed as a side effect.

Implement reading and writing of FP registers.

/proc/*/*regs now work (only) for processes that are in memory.

Clean up comments.

trap.c, trap.h:
Remove unused trap types.
1995-01-14 13:20:26 +00:00
Jordan K. Hubbard
9949564470 Remove bogus scd0 driver - I should have looked at LINT first, anyway. 1995-01-14 10:48:56 +00:00
Bruce Evans
3117fbd98e Enable define of CR0_AM to prepare for implementing alignment checking.
Uniformize idempotency ifdef.
1995-01-14 10:44:55 +00:00
Bruce Evans
c277f99332 Declare a real `struct fpreg' to prepare for implementing reading and
writing of FP regs for procfs.

Uniformize idempotency ifdef.
1995-01-14 10:41:41 +00:00
Bruce Evans
1e1a3d012d Remove reference to impossible trap type T_KDBTRAP. We don't support
watchpoints.

Uniformize idempotency ifdef.
1995-01-14 10:34:52 +00:00
Bruce Evans
9bf308efab Eliminate T_KDBTRAP, which will soon go away. It was only used for an
unreachable case label in kdb_trap().

Use the correct case labels in kdb_trap() so that normal ddb entry doesn't
print a message.

Change all printf's to db_printf's.  Now you can put a breakpoint at printf,
and ddb entry messages don't spam the syslog output.

Cosmetic:

Use ISPL() instead of magic numbers.

Don't compile the unused function kdb_kbd_trap().

Improve some asms.

Print the arg to Debugger().
1995-01-14 10:24:48 +00:00
David Greenman
92c385361b Add missing object_lock/unlock. 1995-01-14 04:58:53 +00:00
Jordan K. Hubbard
0dd1eea105 Put UCONSOLE back - I was wrong, it's still used in one last place.
Submitted by:	ollivier
1995-01-14 02:39:22 +00:00
Justin T. Gibbs
451ab98ff3 Add in aic7770.c (EISA/VL Adaptors) and aic7870.c (PCI adaptor) dependancies
for the ahc driver.
1995-01-13 02:23:27 +00:00
Jordan K. Hubbard
09c42f85eb 1. Remove UCONSOLE. This appears to be well and truly dead (unless it's
hiding someplace in /sys I can't find).
2. Remove NCONS.  Soren's latest changes make it a no-op.
1995-01-12 15:37:16 +00:00
Jordan K. Hubbard
6722294de8 Change GENERIC to SWAP_GENERIC for now. I need the GENERIC kernel to
build by default again!  When the furor subsides, maybe something better
can be done, but..
1995-01-11 17:51:26 +00:00
David Greenman
0d94caffca These changes embody the support of the fully coherent merged VM buffer cache,
much higher filesystem I/O performance, and much better paging performance. It
represents the culmination of over 6 months of R&D.

The majority of the merged VM/cache work is by John Dyson.

The following highlights the most significant changes. Additionally, there are
(mostly minor) changes to the various filesystem modules (nfs, msdosfs, etc) to
support the new VM/buffer scheme.

vfs_bio.c:
Significant rewrite of most of vfs_bio to support the merged VM buffer cache
scheme.  The scheme is almost fully compatible with the old filesystem
interface.  Significant improvement in the number of opportunities for write
clustering.

vfs_cluster.c, vfs_subr.c
Upgrade and performance enhancements in vfs layer code to support merged
VM/buffer cache.  Fixup of vfs_cluster to eliminate the bogus pagemove stuff.

vm_object.c:
Yet more improvements in the collapse code.  Elimination of some windows that
can cause list corruption.

vm_pageout.c:
Fixed it, it really works better now.  Somehow in 2.0, some "enhancements"
broke the code.  This code has been reworked from the ground-up.

vm_fault.c, vm_page.c, pmap.c, vm_object.c
Support for small-block filesystems with merged VM/buffer cache scheme.

pmap.c vm_map.c
Dynamic kernel VM size, now we dont have to pre-allocate excessive numbers of
kernel PTs.

vm_glue.c
Much simpler and more effective swapping code.  No more gratuitous swapping.

proc.h
Fixed the problem that the p_lock flag was not being cleared on a fork.

swap_pager.c, vnode_pager.c
Removal of old vfs_bio cruft to support the past pseudo-coherency.  Now the
code doesn't need it anymore.

machdep.c
Changes to better support the parameter values for the merged VM/buffer cache
scheme.

machdep.c, kern_exec.c, vm_glue.c
Implemented a seperate submap for temporary exec string space and another one
to contain process upages. This eliminates all map fragmentation problems
that previously existed.

ffs_inode.c, ufs_inode.c, ufs_readwrite.c
Changes for merged VM/buffer cache.  Add "bypass" support for sneaking in on
busy buffers.

Submitted by:	John Dyson and David Greenman
1995-01-09 16:06:02 +00:00
Andreas Schulz
a9700525d8 Work around a compiler bug in gcc2.6.3 in handling (long long) variables and
shifting. Also correct the original code as Garrett noticed it in mail.
Leave the mishandled code in to use it later if future versions of gcc
are correct. The code was part of the calibrate_cyclecounter routine to
get the speed of the pentium chip.
1995-01-07 17:26:35 +00:00
Jordan K. Hubbard
2f6df2645b Gunther Schadow <gusw@fub46.zedat.fu-berlin.de>'s
driver for the Genius GS-4500 hand scanner.
Submitted by:	gusw@fub46.zedat.fu-berlin.de
1995-01-07 14:52:08 +00:00
Stefan Eßer
623976474c Submitted by: Wolfgang Stanglmeier <wolf@dentaro.GUN.de>
Reviewed by: <wollman>
First hooks and defines for the ISDN driver,
that soon will see the light ...
1995-01-05 19:51:51 +00:00
David Greenman
b5ba45f6f3 Corrected the list of volatile registers for outsb, outsw, and outsl.
This bug caused my ethernet driver to break, among other things no doubt.
1995-01-04 20:42:25 +00:00
Bruce Evans
37e52b59cc Use sufficient parentheses in macros.
Remove bogus input operands for fnsave(), fnstcw() and fnstsw().

Change all fwait's to fnop's.  This might help avoid hardware bugs.
Wait after fninit with an fnop.  This should be safer now.

Fix some spelling and formatting errors.

Use natural sizes for control and status words (u_short, promotes to int).

Don't clobber the SWI_CLOCK_MASK bits in npx0_imask when using IRQ13.

Set the devconf state correctly (always busy, if configured).  Improve
code for npx_registerdev() a little (gcc can't keep id->id_unit in a
register for some reason).  Don't register a nonexistent npx device.

Print a useful message in npxattach() again (delete references to errors
and not the whole message).  Don't print "387 emulator" if there is no
emulator in the kernel.

Use %p for pointers in error messages.

Don't clobber the FPU state when there is an FPU exception.  Just clear
the exception flags (after saving the flags as before).  This allows
debuggers and SIGFPE handlers to look at the full exception state.
SIGFPE handlers should normally return via longjmp(), which restores a
good FPU state (as before).  Returning from a SIGFPE handler may leave
the FPU in the wrong state (as before).

Clear the busy latch _after_ clearing the exception flags so that there
is less chance of getting a bogus h/w interrupt for a control operation.

Clear the saved exception status word when the next FPU instruction is
excuted so that it doesn't stick around until the next exception.

Clear the busy latch after fnsave() in npxsave() in case it was set when
npxsave() was called.
1995-01-03 04:00:06 +00:00
Bruce Evans
d5ebbddc5e Replace sv_ex_tw by padding (it is no longer used; the tag word in sv_env
is valid).

Expand comment about bogus padding for emulators.

Update prototpe for npxinit().
1995-01-03 03:57:46 +00:00
Jordan K. Hubbard
dd4a485085 From Bill Paul:
- /sys/i386/i386/swapgeneric.c is just plain broke. But fear not, for I
  have unbroken it. One thing that swapgeneric.c does is walk through the
  list of configured devices searching for a boot device. The only easy
  way to accomplish this in 2.0 is to use Garret Wollman's kern_devconf
  stuff. *BUT*, the head of the kern_devconf linked list (dc_list) is declared
  static in /sys/kern/kern_devconf.c. This means that swapgeneric.c can't
  see it at link time. I had to remove the 'static' keyword to get around
  this little problem. I hope this doesn't break anything anywhere.

  *Furthermore,* there's a small matter of making the call to setconf()
  in swapgeneric.c disappear when 'config kernel swap generic' isn't used.
  You could change /sbin/config to create a dummy setconf() function in
  swapkernel.c, but that seems messy somehow. (It's also someting of an
  'it isn't broken, why are you fixing it' situation.) My solution was to
  do what the NetBSD people did and put an #ifdef GENERIC around the call
  to setconf(). If your kernel is called GENERIC or you define 'options
  GENERIC,' then you can use 'config kernel swap generic' and it'll work.

  That aside, the upshot is that: a) swapgeneric.c actually works, and
  and b) the -a boot flag now works as well. If you boot with -a, as in
  "Boot: wd(0,a)/kernel -a" you will be presented with a 'root device?'
  prompt after the autoconfig phase, at which point you can specify what
  device you want mounted as root. Regrettably, you can't specify an NFS
  filesystem. Yet. Three files are affected: /sys/i386/i386/swapgeneric.c,
  /sys/i386/i386/autoconf.c and /sys/kern/kern_devconf.c.

Submitted by:	wpaul
1994-12-31 17:11:59 +00:00
Bruce Evans
43469be308 icu.s:
Move definition of `stat_imask' to clock.c.

clock.c:
Rename `rtcmask' to `stat_imask' and export it.  Rename `clkmask' to
`clk_imask' for consistency.

Only calculate TIMER_DIV(hz) once.

Merge debugging and "garbage" code to produce debugging code and format the
output better.

Make writertc() static inline and use it everywhere.  Now all accesses to
the clock registers go through rtcin() and writertc().

Move rtc initialization to cpu_initclocks().

Merge enablertclock() with cpu_initclocks() and remove enablertclock().
The extra entry point was just a leftover from 1.1.5.
1994-12-30 12:43:35 +00:00
Bruce Evans
13d7c724ca Obtained from: 1.1.5
Fix single-stepping of emulated FPU instructions.

Don't panic if an FPU instruction is attempted but there is no FPU
and no FPU emulator is configured.
1994-12-24 07:22:58 +00:00
David Greenman
94101b5208 Move page_unhold's in pmap_object_init_pt down one line to gard against
a potential race condition.
1994-12-18 14:16:22 +00:00
Jordan K. Hubbard
76fe9b2793 Add a 'vn' to GENERIC 1994-12-18 12:01:40 +00:00
David Greenman
931bde7f72 Check for PG_FAKE too in pmap_object_init_pt. 1994-12-18 03:36:27 +00:00
David Greenman
d9b026fcbd Add two more page table pages to keep 64MB machines happy. 1994-12-18 03:11:46 +00:00
Poul-Henning Kamp
784cf072d8 Remove sd1-sd3 & st1, now that we can autoallocate them.
fix the vn driver in LINT.  It autoallocates too.

Reviewed by:	phk
Submitted by:	rgrimes
1994-12-16 06:04:16 +00:00
David Greenman
c8a62b4bc5 Removed inappropriate comment. 1994-12-11 03:33:58 +00:00
David Greenman
d83ea8bcbd Add additional comment. 1994-12-11 03:11:23 +00:00
David Greenman
32b88083a9 Fix bogus comment. 1994-12-11 02:28:36 +00:00
Bruce Evans
91290462f6 Disable CLKF_BASEPRI() again. I forgot to edit an unwanted change out of
the diffs for the previous commit.
1994-12-03 10:18:24 +00:00
Bruce Evans
b39b673d37 i386/exception.s,
Keep track of interrupt nesting level.  It is normally 0
	for syscalls and traps, but is fudged to 1 for their exit
	processing in case they metamorphose into an interrupt
	handler.

i386/genassym.c;
	Remove support for the obsolete pcb_iml and pcb_cmap2.

	Add support for pcb_inl.

i386/swtch.s:
	Fudge the interrupt nesting level across context switches and in
	the idle loop so that the work for preemptive context switches
	gets counted as interrupt time, the work for voluntary context
	switches gets counted mostly as system time (the part when
	curproc == 0 gets counted as interrupt time), and only truly idle
	time gets counted as idle time.

	Remove obsolete support (commented out and otherwise) for pcb_iml.

	Load curpcb just before curproc instead of just after so that
	curpcb is always valid if curproc is.  A few more changes like
	this may fix tracing through context switches.

	Remove obsolete function swtch_to_inactive().

include/cpu.h:
	Use the new interrupt nesting level variable to implement a
	non-fake CLF_INTR() so that accounting for the interrupt state
	works.

	You can use top, iostat or (best) an up to date systat to see
	interrupt overheads.  I see the expected huge interrupt overheads
	for ISA devices (on a 486DX/33, about 55% for an IDE drive
	transferring 1250K/sec and the same for a WD8013EBT network card
	transferring 1100K/sec).  The huge interrupt overheads for serial
	devices are unfortunately normally invisible.

include/pcb.h:
	Remove the obsolete pcb_iml and pcb_cmap2.  Replace them by
	padding to preserve binary compatibility.

	Use part of the new padding for pcb_inl.

isa/icu.s:
isa/vector.s:
	Keep track of interrupt nesting level.
1994-12-03 10:03:19 +00:00
Poul-Henning Kamp
6128633879 I made a syntax error yesterday.
Submitted by:	John Capo
1994-11-27 01:49:39 +00:00
Poul-Henning Kamp
4ca88be6e9 Set the bootverbose if so desired.
if (bootverbose)
    Print the geometries the bios passes to us (through the bootblocks).
1994-11-26 09:37:57 +00:00
Poul-Henning Kamp
0a6a925d04 Declare "extern int bootverbose", so that device-drivers and others
easily can find it.
1994-11-26 09:27:58 +00:00
Poul-Henning Kamp
f143db1a98 I just learned that isa.h is included in assembler files too... 1994-11-19 18:59:04 +00:00
Poul-Henning Kamp
f194376568 add
extern u_int atdevbase;       /* offset in virtual memory of ISA io mem */
here for a moment, to get it into BETA
1994-11-19 18:47:57 +00:00
Jordan K. Hubbard
26b39132e4 Put ie0 above ep0. Otherwise, the ie0 probe clobbers it.
Submitted by:	gibbs
1994-11-18 19:10:25 +00:00
Justin T. Gibbs
8c1294dcf2 IO_EISASIZE should be 1 slot, not 2. 1994-11-18 19:01:25 +00:00
Jordan K. Hubbard
d6e867f326 Get IO_EISASIZE properly defined now.
Reviewed by:
Submitted by:
Obtained from:
1994-11-18 08:22:04 +00:00
Poul-Henning Kamp
048773d8d9 Grap the bootinfo structure the bootblock passes us. 1994-11-18 05:27:34 +00:00
Justin T. Gibbs
cbb8b164f0 New device-driver entries for the aic7770 driver. These use new features
of config so YOU MUST RECOMPILE CONFIG.  Modifying config was the cleanest
solution to integrating this driver into the tree which will become more
obvious in the next commit.
1994-11-17 20:20:54 +00:00
David Greenman
288c2640aa Allow MAXMEM to be larger than the detected physical memory. This change
was supposed to have already been made, but got botched somewhere.
Don't clobber the last page of memory (where the message buffer is). Some
BIOS don't gratuitously wipe it out on reboot.
1994-11-16 00:41:06 +00:00
Bruce Evans
ff030ea17d Add prototype for Debugger(). 1994-11-15 14:55:25 +00:00
Bruce Evans
b0d1e6de04 Make gdt_segs[] public again for APM.
Make ldt[] public again and restore currentldt and _default_ldt for
USER_LDT.
1994-11-15 14:12:55 +00:00
Bruce Evans
004bedeb68 Rewrite almost everything.
Alphabetize.

Write all i/o functions in sleep so that we don't use anything from
NetBSD.

Restore the correct type of u_int for ports.  This saves a whole cycle
per i/o on 486's.

Change `inline' back to __inline to avoid compiler warnings with
-Wreally-all.

Don't implement bdb() unless BDE_DEBUGGER is defined.  Declare bdb_exists
outside the function to avoid hundreds of compiler warnings.

Let the compiler pick the register in asms if possible.

Implement ffs() using inline asm().  gcc provides a slightly different
one.  It was broken in gcc-2.4.5 but works now.  Declaring a correct
version inline ensures getting a correct version.  FreeBSD-1.1.5 has
an slow inline version but FreeBSD-2.0 has a library version (which
probably never gets used).

Do inb() and outb() without using %edx for constant ports below 0x100.

Remove casts to the same type in queue functions.

Declare prototypes for everything implemented i386/*.s and also for
everything that is normally implemented as an inline here (I don't
like the current complete dependency on gcc).  Ifdef out the prototypes
that are declared elsewhere.  THere should be a separate header to
declare things implemented in i386/*.s, but then it would be harder
to override declarations with inlines.

${UII}
1994-11-14 15:04:06 +00:00
Bruce Evans
663f148514 Log processes that exit with an masked npx exception that would trap
with the current default exception (un)mask.  There should be no such
processes unless you change the mask.  Someday the mask should be
changed to the IEEE default of everything masked.  The npx state
gets saved so that it can be checked and this may have the side effect
of fixing a bug that was reported for 1.1.5.  (npx exceptions may
sometimes leak across exits and clobber another process.  I can't see
how this can happen.)

Get some missing/wrong declarations from headers now that the headers
have them.
1994-11-14 14:59:06 +00:00
Bruce Evans
e77e2e6ca1 Oops, the previous commit got the diff for the log message instead of
the following.

Move declarations to and from <machine/segments.h>.  Make segment stuff
static if possible.

Remove unused (although initialized) global variables _default_ldt,
currentldt, _gsel_tss (rename the latter to the auto variable
gtel_tss).

Use "correct" and consistent types for interrupt handlers.

Remove a mailing address from the code.

Fix type mismatches found by adding prototypes.
1994-11-14 14:23:54 +00:00
Bruce Evans
30008dda2d (Bogus several hundred line diff for a log message deleted. See rev 1.91
for the intended log message. -DG)
1994-11-14 14:19:54 +00:00
Bruce Evans
095b0028db Move declarations of atdevbase and rtcin() to cpufunc.h (a less wrong
place).

Fix spelling error.

Uniformize idempotency ifdef.
1994-11-14 14:19:10 +00:00
Bruce Evans
040f100044 Remove 1.5+K of bloat for unused idt entries.
Partly support BDE_DEBUGGER.  Still broken by conflict with APM.  Does
nothing if BDE_DEBUGGER is not defined.

Clean up prototypes and data declarations.  Declare most of the segment
functions that are implemented in support.s.  Make data private in
machdep.c if possible.

Parenthesize expressions in macros properly!

${Uniformize idempotency ifdef}.
1994-11-14 14:18:15 +00:00
Bruce Evans
3bbb00e1a3 Declare inline functions as __inline and with new-style parameter lists
to avoid compiler warnings.

Clean up prototypes: alphabetize; don't use redundant `extern' or
meaningless `extern inline'.

Uniformize idempotency ifdef.
1994-11-14 14:12:24 +00:00
Bruce Evans
36633bf49d Undo a previous change. <sys/disklabel.h> was broken, not these files. 1994-11-14 13:22:52 +00:00
Justin T. Gibbs
e424e8bfac Add ep0 line to kernel config files. 1994-11-13 10:17:07 +00:00
Nate Williams
412ac969ed Add Matt Thomas' le0 DEPCA driver to the GENERIC kernel. This works
but I can't test to see if it walks on other ethernet drivers.  Can the
install folks add this driver to the install script?
1994-11-13 09:42:07 +00:00
David Greenman
ef53d2f8b6 Nuked ed2 - it was added for the common 16bit card case where the
irq is 10. This is auto-sensed/configured now in the 'ed' driver.
1994-11-13 07:20:03 +00:00
Jordan K. Hubbard
5231231d03 Add back ed2. Harrumph.. 1994-11-12 20:27:24 +00:00
Andrey A. Chernov
b27a526947 Revision 1.6 fix was lost: don't write 0 to RTC_DIAG 1994-11-12 16:24:54 +00:00
Jordan K. Hubbard
794a798905 ed2 was actually an impossible entry to reach! 1994-11-12 06:12:01 +00:00
Poul-Henning Kamp
e113d7633d Make a kernel sans FFS possible. 1994-11-12 01:47:43 +00:00
David Greenman
e50e132aa8 Added 'de' ethernet driver. 1994-11-11 05:48:49 +00:00
Jordan K. Hubbard
49445644f1 Enable floppy-tape support. 1994-11-10 23:46:31 +00:00
Andrey A. Chernov
3b8f1cfc05 Use adjkerntz into inittodr too (for APM stuff) 1994-11-10 12:53:13 +00:00
Bruce Evans
86a8bb8a33 Don't declare DELAY() here. Callers should include <machine/clock.h>. 1994-11-09 00:51:38 +00:00
Jordan K. Hubbard
ada9d061d4 Add back ze0 driver; somebody took it out of _both_ LINT and GENERIC,
kinda hosing the laptop folks.
1994-11-08 07:39:28 +00:00
Poul-Henning Kamp
98020fdd6c Added a kernel variable, "dodump" defaulting to zero, which disables dumps.
Somebody should make a mib variable for it.
Just now it is pointless to dump the kernel, since we have nothing which
can read the dump.
Furthermore is should never be the default to dump.
	options	DODUMP
will enable dumps.
1994-11-07 03:51:32 +00:00
Poul-Henning Kamp
89c8eae117 Initialize %fs and %gs from %ds.
This seems to stabilize the APM-bios on my Gateway Handbook, and it makes
sense in general too.
1994-11-06 22:18:45 +00:00
David Greenman
fc64ae2b4e Do a better job at preparing registers for the new process in setregs()
by setting them all to a known state.
1994-11-06 04:46:53 +00:00
Bruce Evans
2c305bdb3c Nuke the losing version of microtime. The assembler version now works
for all reasonable HZ's.  HZ > 1000 doesn't work because of sloppy
conversions in hzto() (division by (tick / 1000) == 0).  This was
fixed in 1.1.5.

Eliminate some extern declarations by including the appropriate header
files that now contain appropriate declarations.
1994-11-06 01:33:03 +00:00
Bruce Evans
94096616ab Public function declarations moved to <machine/npx.h>. 1994-11-06 00:58:06 +00:00
Bruce Evans
a3b33372b9 Maintain a new variable `timer0_overflow_threshold' so that microtime()
doesn't have to calculate it every call.

Rename `timer0_prescale' to `timer0_prescaler_count' and maintain it
correctly.  Previously we lost a few 8253 cycles for every "prescaled"
clock interrupt, and the lossage grows rapidly at 16 KHz.  Now we
only lose a few cycles for every standard clock interrupt.

Rename `*_divisor' to `*_max_count'.

Do the calculation of TIMER_DIV(rate) only once instead of 3 times each
time the rate is changed.

Don't allow preposterously large interrupt rates.  Bug fixes elsewhere
should allow the system to survive rates that saturate the system, however.

Clean up declarations.

Include <machine/clock.h> to check our own declarations.
1994-11-05 23:55:07 +00:00
Bruce Evans
a1ca704e29 Declare all functions exported by the npx driver.
Uniformize idempotency ifdefs.
1994-11-05 22:59:09 +00:00
Bruce Evans
65af765646 Declare the full uglyness of the interfaces to the clock driver (except
things declared in machine-independent files).
1994-11-05 22:51:17 +00:00
Bruce Evans
c342b9faa3 Disable the direct call from hardclock() to softclock(). Support
for it is incomplete and buggy.  There is no problem unless Xintr0()
is reentered or should be reentered, but high clock interrupt
frequencies for pcaudio cause Xintr0() to be reentered (or clock
ticks to be lost when Xintr0() should have been reentered but
wasn't), and we lose little by delaying the call to softclock().

Move declarations related to the clock driver to clock.h.

Move declarations related to the npx driver to npx.h.

Clean up the remaining declarations.
1994-11-05 22:44:34 +00:00
Jordan K. Hubbard
2405ced306 Argh! Missing quotes. 1994-11-05 07:41:08 +00:00
Jordan K. Hubbard
4525c93ebf We need CD9660 and MSDOS filesystems built-in if the floppy is to have
a hope of getting at these types of filesystems without dragging all
the LKM stuff in.
1994-11-05 07:38:50 +00:00
Jordan K. Hubbard
fb59d6ab65 __386BSD__ -> __FreeBSD__
I know that many of these entries are bogus and need to be revisited,
but let's get the tree working again for now and then do a pass through
looking at all the __FreeBSD__ entries, shall we?
1994-11-04 02:14:13 +00:00
Jordan K. Hubbard
b851eb1523 Eliminate USERCONFIG. This option is now standard. 1994-11-03 15:51:38 +00:00
Jordan K. Hubbard
8cf0da9ceb Unconditionalize USERCONFIG. Uh, thanks, David. 1994-11-03 14:57:54 +00:00
Jordan K. Hubbard
906c074f8d Add extra id_enabled flag for userconfig to manipulate. If id_enabled
is FALSE, the device will not be probed.  id_enabled is TRUE by default.
1994-11-03 04:15:04 +00:00
Gary Palmer
97555463a4 Cosmetic changes in comment at start (it's no longer a GENERICAH config
file!)
1994-11-03 01:46:59 +00:00
Bruce Evans
f23c6e08df Fix a very old, very stupid race clearing the mask bit for the current
interrupt.  Other bits in imen and icu+1 are volatile.

INTREN() and INTRDIS() in icu.h need to be changed similarly.

Change #include's to 2.0 style.
1994-11-01 23:29:50 +00:00
Andrey A. Chernov
0c9159ecd7 DMA automode patch, fix SB16 clicks
Submitted by: tim@cs.city.ac.uk
1994-11-01 17:26:50 +00:00
Andrey A. Chernov
0c8e8c63a8 Implement CPU_ADJKERNTZ in different way: call resettodr()
on writting this variable. adjkerntz pgm changes will follow.
1994-11-01 06:04:12 +00:00
Joerg Wunsch
0cdf7aff6d Added hooks for an easy drop-in of the pcvt concole driver.
Don't panic:-), this is simple stuff just doing exactly the same as for syscons.
(files.i386 did already contain the necessary stuff.)
1994-10-31 17:20:15 +00:00
Bruce Evans
ab4bc4b293 Fix selector arg to match the (missing) prototype for sdtossd().
Cosmetic.

Return from trap() if trap_fatal() returns.  trap_fatal() isn't
fatal if you have ddb.  Returning from trap() is usually the right
thing to do and much better than falling through.
1994-10-30 20:25:21 +00:00
Bruce Evans
6d520d66e4 Fix selector arg to match the (missing) prototype for ssdtosd().
Cosmetic.
1994-10-30 20:23:23 +00:00
Bruce Evans
54d024041c locore.s:
Build a dummy frame at the top of tmpstk to help debuggers trace the stack
when the system is idle.

swtch.s: idle():
Initialize the frame pointer so that debuggers don't try to trace a bogus
stack.

Load the frame pointer, load the stack pointer and switch out the old
stack in the unique order that never leaves one of the pointers pointers
invalid so that debuggers can trace idle().  Disabling interrupts
provides sufficient validity for normal operation, but debuggers use
(trace) traps.
1994-10-30 20:09:13 +00:00
Jordan K. Hubbard
94a92413cd From: fredriks@mcs.com (Lars Fredriksen)
...
It turns out that these files do not include <sys/dkbad.h> before
<sys/disklabel.h>.
Submitted by:	fredriks
1994-10-28 12:42:05 +00:00
Jordan K. Hubbard
54c7241bd3 Julian Elischer's disklabel fixes. 1994-10-27 20:45:13 +00:00
Bruce Evans
f7bf7f894d Fix compiler warnings. 1994-10-26 22:01:11 +00:00
Bruce Evans
51c7f756fe Move definition and initialization of video_mode_pointer to syscons.c. 1994-10-26 21:52:25 +00:00
Jordan K. Hubbard
cb72513713 Enable USERCONFIG and document it in LINT. 1994-10-26 19:20:27 +00:00
Jordan K. Hubbard
77283658cb Invoke userconfig() if kernel compiled with options USERCONFIG and
-c flag used.
1994-10-26 18:35:02 +00:00
Jordan K. Hubbard
141066ed62 Fix two very minor nits, one of which caused a warning (no return type for
main).
1994-10-26 10:18:24 +00:00
Poul-Henning Kamp
47c3575419 Fixed a couple of wrong printfs (too few arguments supplied). Also zapped
a couple of unused vars at the same time.  Added a #include <sys/proc.h>
to isa.c while here anyway.
1994-10-26 00:16:20 +00:00
Stefan Eßer
b56fdd903a BEWARE: Interface change of register_intr() !
Changed the fifth parameter to register_intr() from u_int mask into
u_int *maskptr in preparation for new features (shared interrupts and
removable devices, eg. for PCMCIA).
1994-10-25 23:06:16 +00:00
Stefan Eßer
8627141c50 BEWARE: Interface change of register_intr() !
Changed the fifth parameter to register_intr() from u_int mask into
u_int *maskptr in preparation for new features (shared interrupts and
removable devices, eg. for PCMCIA).
1994-10-25 22:35:12 +00:00
Bruce Evans
25f69b0ff8 Use the correct macro for deciding whether syscons' variables should
be accessed.

Remove some unused declarations and document a bogus one.
1994-10-25 18:22:32 +00:00