Commit Graph

3963 Commits

Author SHA1 Message Date
KATO Takenori
0c8cda329f Include file update: <machine/spl.h> --> <machine/ipl.h>. 1997-05-31 12:45:37 +00:00
Peter Wemm
5400ed3b2f Include file updates.. <machine/spl.h> -> <machine/ipl.h>, add
<machine/ipl.h> to those files that were depending on getting SWI_*
implicitly via <machine/cpufunc.h>
1997-05-31 09:27:31 +00:00
Peter Wemm
49c6ff7dc2 add ipl_funcs.c (Hmm.. should probably use a "compile-with" arg rather
than a Makefile.i386 hook)
1997-05-31 09:23:44 +00:00
Peter Wemm
752bbf7aa8 compile ipl_funcs.c with -fomit-frame-pointer, as suggested by Bruce. This
cuts the cost of a function call instead of an inline.
1997-05-31 09:19:19 +00:00
Peter Wemm
813dc43715 move spl.h to ipl.h, minus the inline spl macros. The inline spl
implementation is now in isa/ipl_funcs.c (at least for the time being),
leaving the definitions of the SWI_* and cpl/idelayed/ipending.
1997-05-31 09:16:36 +00:00
Peter Wemm
5354c7c8d2 remove #include of <machine/spl.h> - they are externed now
Reviewed by: bde
1997-05-31 09:13:03 +00:00
Peter Wemm
c9bfe68408 move intrhand2_t from isa_device.h to machine/types.h - it's used far more
than in the isa dependent code.
create intrmask_t in machine/types.h  (replaces "intrmask" typedef from
sys/interrupt.h)

Reviewed by: bde
1997-05-31 09:07:36 +00:00
Peter Wemm
dfa67ec76e Store the macro values for SWI_TTY_MASK and SWI_NET_MASK in variables to
that lkm's can use them for fiddling the masks without being dependent on
which mode the kernel is compiled in (SMP or UP).  This is particularly
for ppp_tty.c which has some domain crossing between the net and tty
subsystems.  The values are not used in the spl code, they are for
reference only (ie: the compiled code uses immediate values rather than
an indirect 32 bit address and 32 bit data fetch).
1997-05-31 09:03:52 +00:00
Peter Wemm
0589fe3b6e The SWI_NET_MASK and SWI_TTY_MASK handlers are now back adjacent to the
top of the hardware interrupt handlers.  Apparently this is slightly
faster with the bit scanning instruction that looks these up - this set of
changes reverts the original change.

Reviewed by: bde
1997-05-31 08:59:51 +00:00
Peter Wemm
a24514dfdf Bruce's original implementation of the splxxx() routines, but as C code
rather than inlines.  These are compiled with -fomit-frame-pointer and
work out pretty close to the original routines, but it might be a fraction
slower.  The reason for doing this is to prevent the SWI_* and HWI_* values
from being compiled into drivers and lkms etc which is one of the things
that prevents the same lkm from being used on both SMP and UP kernels.

This gives us a lot more scope for experimenting with the splxxx
implementaton for SMP parallelism etc.

Reviewed by: bde
1997-05-31 08:57:05 +00:00
Peter Wemm
0638a3a84b Bruce's original definitions for the spl/ipl code when running on the old
PIC's.

Reviewed by: bde
1997-05-31 08:50:34 +00:00
Peter Wemm
f09434da26 Definitions for the spl/ipl code when running on an IO APIC.
Obtained from: fsmp  (part of what Steve added for IO APIC support)
Reviewed by:   bde
1997-05-31 08:49:08 +00:00
KATO Takenori
20916c1f24 - Use 6x86MX' instead of M2'. Cyrix officially use `6x86MX' for the
CPU code-named `M2'.

- Use the result of cpuid instruction instead of DIR to identify
  6x86MX cpu.  DIR0 and DIR1 are not documented in the data sheet, and
  cpuid instruction is enabled at reset time.

- Add a function, init_6x86MX() to initialize 6x86MX cpu.  It supports
  CPU_SUSP_HLT and CPU_IORT options.  It always sets NC1 (640K - 1M is
  not cached.), and enables L1 cache in write-back mode.

- Fix typo in the comment in identblue().
1997-05-31 08:45:24 +00:00
Steve Passe
89da9c65d6 Modified code in direction of supporting MULTIPLE_IOAPICS.
- moved read_io_apic_maskc24() from isa/mpapic.h, disabled it, currently unused.
 - cleaned up various panic() calls.
1997-05-31 03:29:57 +00:00
Steve Passe
f540db4852 Modified code in direction of supporting MULTIPLE_IOAPICS.
- removed set_io_apic_mask() & clr_io_apic(_mask)
 - moved read_io_apic_maskc24() to i386/mpapic.c, disabled it, currently unused.
1997-05-31 03:29:06 +00:00
Gene Stark
bb7e0661df Submitted by: Rich Murphey (ages ago) and Gene Stark
Hopefully I've done the proper magic to merge changes between 1.17 and
1.17.2.1 into the main trunk.  Description of those changes follows:

Brought in changes sent to me in late 1995 by Rich Murphey.
I cleaned up a few things and am currently running these under
2.2-970205-GAMMA.

The changes deal with software debouncing apparently necessary on
todays faster hardware, and also some problems with the use of the -Select
line for the TW-523 sync.  This driver allows use of +PaperEnd as an
alternative.
1997-05-31 02:39:32 +00:00
Steve Passe
a8baaafda0 Code such as apic_base[APIC_ID] converted to lapic__id
Changes to pmap.c for lapic_t lapic && ioapic_t ioapic pointers,
currently equal to apic_base && io_apic_base, will stand alone with the
private page mapping.
1997-05-29 05:58:41 +00:00
Steve Passe
08942d4605 apic.h now has structure definitions for both the local APIC and io APIC.
apic.h has defines like:
#define lapic__id       lapic->id

Once private pages and "known virtual addr" mapping of the APICs is
ready all 'lapic__XXX' will be changed to 'lapic.XXX', and the defines
will be removed.

Changes to smp.h for lapic_t lapic && ioapic_t ioapic pointers,
currently equal to apic_base && io_apic_base, will stand alone with the
private page mapping.
1997-05-29 05:57:43 +00:00
Steve Passe
4fd20a6b2a Added code to manage the local and io APICs as structures. 1997-05-29 05:56:12 +00:00
Peter Wemm
288e2230b5 remove no longer needed opt_smp.h includes 1997-05-29 05:11:11 +00:00
Peter Wemm
64b3672f39 minor style police (recent divergence from KNF code) 1997-05-29 05:07:10 +00:00
Peter Wemm
ae9249615f remove opt_smp.h and fix the reason it was needed. 1997-05-29 05:04:30 +00:00
Peter Wemm
7a14de6260 No longer need opt_smp.h here 1997-05-29 05:00:35 +00:00
Peter Wemm
ecf8148761 remove opt_smp.h from this well-included file, minor style police 1997-05-29 04:58:04 +00:00
Peter Wemm
6b19c20ba5 remove opt_smp.h, minor style police 1997-05-29 04:55:39 +00:00
Steve Passe
b8d67ee052 Add declaration of mp_probe().
This is now called directly from machdep.c.
1997-05-28 18:44:11 +00:00
Steve Passe
c21701d99b Nuke the printing of the unredirect message unless bootverbose. 1997-05-27 19:28:10 +00:00
Stefan Eßer
9a8979b997 Fix problem introduced in the CMD640 workaround which could lead
to a NULL pointer dereference.

PR:		kern/3696
Submitted by:	Joel.Faedi@esial.u-nancy.fr
1997-05-27 18:28:08 +00:00
Bruce Evans
f79e6ee387 Staticize. 1997-05-27 16:26:39 +00:00
Kazutaka YOKOTA
ea9a5f9bf5 scprobe() referred to the psm_softc structure even after it was
freed ;-<

PR:		kern/3694
1997-05-27 11:55:41 +00:00
Stefan Eßer
b3daa02e72 Yet another fix for configuration mechanism 1 register accesses:
Adjust the data port address by adding the two low order bits of
the register number. The address port takes only a word address
(i.e. ignores the two low order bits written to it).
1997-05-26 21:52:41 +00:00
Stefan Eßer
64039d403f Fix previous fix: The enable bit is bit 31 (0x8000000) and not bit 15. 1997-05-26 21:25:24 +00:00
Stefan Eßer
e0c57a9615 Set enable bit when writing the configuration address in configuration
mode 1. Omission of this bit makes all config register accesses fail in
on recent chip sets ...

(The problem was reported and debug output provided by: Steve Passe)
1997-05-26 21:11:05 +00:00
Steve Passe
c4ed75ce19 Fix breakage from my last commit where mp_start() was missing from UP builds. 1997-05-26 18:40:45 +00:00
Steve Passe
694f6724f1 Changed inclusion of isa/icu.s to isa/ipl.s.
This is part of the breakup of UP/SMP specific INTerrupt code.
1997-05-26 18:00:34 +00:00
Steve Passe
81c1993f87 Split vector.s into UP and SMP specific files:
- vector.s		<- stub called by i386/exception.s
 - icu_vector.s		<- UP
 - apic_vector.s	<- SMP

Split icu.s into UP and SMP specific files:
 - ipl.s		<- stub called by i386/exception.s (formerly icu.s)
 - icu_ipl.s		<- UP
 - apic_ipl.s		<- SMP

This was done in preparation for massive changes to the SMP INTerrupt
mechanisms.  More fine tuning, such as merging ipl.s into exception.s,
may be appropriate.
1997-05-26 17:58:27 +00:00
Stefan Eßer
5bec615793 Completely replace the PCI bus driver code to make it better reflect
reality. There will be a new call interface, but for now the file
pci_compat.c (which is to be deleted, after all drivers are converted)
provides an emulation of the old PCI bus driver functions. The only
change that might be visible to drivers is, that the type pcici_t
(which had been meant to be just a handle, whose exact definition
should not be relied on), has been converted into a pcicfgregs* .

The Tekram AMD SCSI driver bogusly relied on the definition of pcici_t
and has been converted to just call the PCI drivers functions to access
configuration space register, instead of inventing its own ...

This code is by no means complete, but assumed to be fully operational,
and brings the official code base more in line with my development code.

A new generic device descriptor data type has to be agreed on. The PCI
code will then use that data type to provide new functionality:

1) userconfig support
2) "wired" PCI devices
3) conflicts checking against ISA/EISA
4) maps will depend on the command register enable bits
5) PCI to Anything bridges can be defined as devices,
   and are probed like any "standard" PCI device.

The following features are currently missing, but will be added back,
soon:

1) unknown device probe message
2) suppression of "mirrored" devices caused by ancient, broken chip-sets

This code relies on generic shared interrupt support just commited to
kern_intr.c (plus the modifications of isa.c and isa_device.h).
1997-05-26 15:08:43 +00:00
Stefan Eßer
4c9340d45c Add support for shared interrupts to the kernel. This code is meant
be (eventually) architecture independent. It provides an emulation
of the ISA interrupt registration function register_intr(), but that
function does no longer manipulated the interrupt controller and
interrupt descriptor table, but calls the architecture dependent
function setup_icu() for that purpose.

After the ISA/EISA bus code has been modified to directly call the new
interrupt registartion functions (intr_create() and intr_connect()),
the emulation of register_intr() should be dropped.

The C level interrupt handler function should take a (void*) argument,
and the function pointer type (inthand2_t) should defined in some  other
place than isa_device.h.

This commit is a pre-requisite for the removal of the PCI specific shared
interrupt code.

Reviewed by:    dfr,bde
1997-05-26 14:42:24 +00:00
Steve Passe
1ffa54ef38 Added a test called 'LATE_START'.
This is now the default, it delays most of the MP startup to the function
machdep.c:cpu_startup().  It should be possible to move the 2 functions
found there (mp_start() & mp_announce()) even further down the path once
we know exactly where that should be...

Help from: Peter Wemm <peter@spinner.dialix.com.au>
1997-05-26 09:23:30 +00:00
Steve Passe
f7ef1c65a1 Removed global hwisrs, replacing it with vec (formerly static to icu.s). 1997-05-25 16:58:03 +00:00
Steve Passe
383243e687 Made the array vec[] a global.
This allows the APIC code to reorder the vectors at runtime.
1997-05-25 16:55:26 +00:00
Peter Wemm
2321ce34c1 uncomment wl again now that it compiles... 1997-05-25 07:18:22 +00:00
Peter Wemm
4c728676b7 Make the multicast code compile under -current. This has not been reviewed
or tested yet.  Mike may want to make some adjustments.
1997-05-25 07:17:02 +00:00
Peter Wemm
cee77949ec Fix(?) two volatile cast warnings. The buffer is volatile within the
function so as to avoid compiler side effects, but functions calling it
shouldn't be affected (gcc shouldn't cache memory scope past a function
call)
1997-05-25 04:13:27 +00:00
Peter Wemm
70117bbefd match the #include opt_ file with options.i386 (it has opt_wavelan.h) 1997-05-25 04:04:20 +00:00
Steve Passe
45fedb144d Broke up parse_mp_table() into 2 passes:
- The 1st (preparse_mp_table()) counts the number of cpus, busses, etc. and
   records the LOCAL and IO APIC addresses.
 - The 2nd pass (parse_mp_table()) does the actual parsing of info and recording
   into the incore MP table.

This will allow us to defer the 2nd pass untill malloc() & private pages
are available (but thats for another day!).
1997-05-25 02:49:03 +00:00
Steve Passe
a2e4067731 Minor cleanup.
Comment about expanded use of NAPICIDS.
Change default NINTR from 64 to 48.
1997-05-25 02:43:42 +00:00
Steve Passe
2515353993 Delay mp_start() till after the msgbuf is mapped. We really want to delay
it till even later but tss setup prevents that right now...
1997-05-24 18:59:02 +00:00
Steve Passe
7f6c65fa06 Now that panic() is properly printing messages for early SMP panics all
the 'printf("..."); panic("\n")' sections are returned to 'panic("...")'.
1997-05-24 18:48:53 +00:00
Peter Wemm
e83d2f266d The wavelan driver doesn't even compile! 1997-05-24 12:23:44 +00:00
Søren Schmidt
4aab40db6c Fix support for the Hitachi CDR7730 IDE cdrom drive.
Patch from pr1730.
Tested on our IDE cdrom drive farm...
1997-05-23 16:22:04 +00:00
Philippe Charnier
f29fffef82 typo (Cyirx -> Cyrix). 1997-05-23 06:22:47 +00:00
Steve Passe
89921bb594 Convert all:
panic( "xxxxx\n" );

to:
 printf( "xxxxx\n" );
 panic( "\n" );

For some as yet undetermined reason the argument to panic() is often NOT
printed, and the system sometimes hangs before reaching the panic printout.
So we hopefully at least print some useful info before the hang, as oppossed to
leaving the user clueless as to what has happened.
1997-05-22 22:35:42 +00:00
Steve Passe
27584cebe0 Make the default for NINTR really large (ie 64).
We just ran across one with 38+ entries.
1997-05-22 22:04:45 +00:00
Mike Smith
4eb256367e Add 'wl' Wavelan driver.
Obtained from:	Jim Binkley <jrb@cs.pdx.edu>
1997-05-22 08:50:14 +00:00
Mike Smith
98d46ad0c9 Add the 'wl' ISA Wavelan driver.
Obtained from:	Jim Binkley <jrb@cs.pdx.edu>
1997-05-22 08:47:40 +00:00
John Polstra
61b005296f This commit affects ELF kernels only.
Remove "setdefs.h" and arrange to generate it automatically at
ELF kernel build time.

"gensetdefs.c" is a utility which scans a set of ELF object files
and outputs a line ``DEFINE_SET(name, length);'' for each linker
set that it finds.  When generating an ELF kernel, this is run just
before the final link to generate "setdefs.h".

Remove the init_sets() function from "setdef0.c", and its call from
"machdep.c".  Since "gensetdefs.c" calculates the length of each
set, it is no longer necessary in an ELF kernel to count the set
elements at kernel initialization time.  Also remove "set_of_sets"
which was used for this purpose.

Link "setdef0" and "setdef1" into the kernel only if building for
ELF.  Since init_sets() is no longer used, there is no need to link
them into an a.out kernel.
1997-05-21 23:21:30 +00:00
John Polstra
5851a3655a Fill out the ELF header files to make them more or less complete.
Fix a macro name that was misspelled both in brandelf.c and
imgact_elf.h.
1997-05-21 23:07:31 +00:00
John Polstra
9e86cdb740 Add new C global names also referenced from assembly language.
These mostly came from the addition of SMP support.
1997-05-21 22:56:59 +00:00
John Polstra
713da3ed8b Make setbits() SMP-safe. Eliminate the SETBITS() macro, and replace
all uses of it with the equivalent calls to setbits().

This change incidentally eliminates a problem building ELF kernels
that was caused by SETBITS.

Reviewed by:	fsmp, peter
Submitted by:	bde
1997-05-21 22:56:05 +00:00
Justin T. Gibbs
cc80aa3972 Several bug fixes for the ee16 support from Richard Straka:
1) Adjust NFRAMES from 16 to 8 per 16k of memory.
2) Acknowledge interrupts to the card early in the interrupt
   handler before processing the event that caused the interrupt.
   This frees the card to process addtional events instead of
   waiting for the driver to finish handling events.
3) Changed the initialization of the transmit buffers to be a
   loop so that the number of buffers can be more easily changed.
4) Moved the code to take the adapter out of loop back mode to just
   before we enable the receiver.

I also made the driver dynamically size its resource arrays at attach
time so that we can take full advantage of adapters with more than 16k
of memory.

Richard has some other changes he's working on to improve performance,
but this should get ee16 support working reliably again.

Thanks to Wes Santee <wes@bogon.net> for testing these patches.

Submitted by: Richard Straka <straka@user1.inficad.com>
1997-05-21 18:26:09 +00:00
Joerg Wunsch
00081cc989 Major overhaul of the SyncPPP layer. Basically, this comprises now a
full implementation of the sate machine as described in RFC1661, and
provides support for plugging in various control protocols.  I needed
this to provide PPP support for the BISDN project (right now).

Unfortunatley, while the existing API was almost up to the point, i
needed one minor API change in order to decouple the this-layer-
started and this-layer-finished actions from the respective Up and
Down events of the lower layer.  This requires two additional lines in
the attach routines of all existing lower layer interface drivers that
are using syncPPP (shortcutting these actions and events).  Apart from
this, i believe i didn't change the API of all this, so everything
should plug in without too many hassles.  Please report if i broke
something in the existing drivers.

For a list of features (including new ones like dial-on-demand), and
things still to be done, please refer to the man page i'll commit asap.

Encouraged by:	Serge Vakulenko <vak@cronyx.ru>
1997-05-19 22:03:09 +00:00
KATO Takenori
0f5ccb66e4 Recognize AMD 486 CPUs. 1997-05-19 12:41:35 +00:00
Poul-Henning Kamp
468d825d86 Whoops, missed a zero there. Flags 0x10000 it is. 1997-05-18 21:22:11 +00:00
Poul-Henning Kamp
e12ca851a6 Flags 0x1000 on sio now disables the dreaded test#3.
PR:		3395
1997-05-18 21:19:04 +00:00
Poul-Henning Kamp
8463cf03a9 Detect various supersets of 16550A based on fifo depth.
PR:		i386/3523
Reviewed by:	phk
Submitted by:	vak@cronyx.ru
1997-05-18 20:53:52 +00:00
Bruce Evans
906265bada Removed some useless code:
- gcc assumes that %ecx and %edx are clobbered (due to calling
  conventions), thus there is no need for saving/restoring those two
  registers.
- %es is reset to default value by real_to_prot, thus there is no need
  for saving/restorig that register.
Submitted by:	tegge
1997-05-16 10:40:00 +00:00
Tor Egge
7783c29bb1 Ignore the supplied nfs_diskless structure from the bootstrap loader
if we want to use NFS v3 to mount root and swap.
1997-05-15 19:12:56 +00:00
Tor Egge
b262c3b12b Update netboot manual page.
Submitted by:	Luigi Rizzo <luigi@iet.unipi.it>
1997-05-15 19:04:33 +00:00
Kazutaka YOKOTA
3ef626ecd5 1) font loading (two fixes)
When an ioctl command SW_XXXX is issued, scioctl() checks if the font
appropriate for the specified mode is already loaded.  The check was
correctly done for 8 line and 16 line fonts, but not for 14 line font.

The symbols FONT_8, FONT_14 and FONT_16 were defined as numbers but
were sometimes treated as bit flags. They are now defined as bit
flags.

2) screen blinking (two fixes)

Removed a redundant call to timeout() in do_bell().

Don't let blink_screen() write to the video buffer if the screen is in
the graphics (UNKNOWN) mode.

3) screen saver timeout

The ioctl command CONS_BLANKTIME sets the screen saver's timeout.  The
value of zero will disable the screen saver. If the screen saver is
currently running it should be stopped.

4) border color and destructive cursor (two fixes)

The border color and the cursor type can be changed via escape
sequences.  But only VGA can change the border color and set the
cursor type to destructive (CHAR_CURSOR) in the current syscons.
scan_esc() failed to check this.

Reviewed by:	sos
1997-05-15 05:43:59 +00:00
Tor Egge
f811abf08c Bring in some improved bootp support for netboot submitted by Luigi:
- TFTP is not needed any longer.
Add some other improvements:
      - swapsize is now detected if no value was specified.
      - resvport is used by default
      - merged code for setting/showing mount options for root/swap.
Submitted by:   Luigi Rizzo <luigi@labinfo.iet.unipi.it>
1997-05-14 02:44:27 +00:00
Satoshi Asami
b1671e460a Add ${CFLAGS} to makerom command line. Note: don't add ${LDFLAGS} here,
it has a bunch of extra stuff defined above.

While I'm here, change "$(CFLAGS)" to "${CFLAGS}" to make all the rules
uniform.
1997-05-13 06:23:21 +00:00
Tor Egge
472ac7f0bd save/restore %ebx, %esi and %edi when calling bios routines.
Don't save/restore %ecx and %edx.
Reset segment limits when going to real mode.
Reviewed by:	phk (briefly)
1997-05-12 23:00:32 +00:00
Andreas Klemm
99f962423c - fixed typo
- merged SMP option SMP_AUTOSTART from LINT
- enabled SMP_AUTOSTART, since it's the desired working mode and it's
  reported to work now.
PR:
Reviewed by:
Submitted by:
Obtained from:
1997-05-11 19:01:24 +00:00
Tor Egge
432aad0e98 Bring in some kernel bootp support. This removes the need for netboot
to fill in the nfs_diskless structure, at the cost of some kernel
bloat. The advantage is that this code works on a wider range of
network adapters than netboot. Several new kernel options are
documented in LINT.
Obtained from: parts of the code comes from NetBSD.
1997-05-11 18:05:39 +00:00
Bruce Evans
b8dbeb6b4d Fixed initialization of ldt[]. Unused entries were garbage. A comment
was stale.

Fixed initialization of gdt[] for the BDE_DEBUGGER case.  APM entries
clobbered debugger entries if the debugger was loaded (APM is incompatible
with BDE_DEBUGGER) and unused entries were garbage if the debugger wasn't
loaded.
1997-05-11 12:39:43 +00:00
Steve Passe
a56fb4ee60 Documented SMP_AUTOSTART to be working. 1997-05-10 17:40:53 +00:00
Joerg Wunsch
28d90c30ee Add the D_DISK flag to the cdevsw structs of various CD-ROM drivers. 1997-05-10 12:13:17 +00:00
John Hay
02c186c9bf Remove IPXPRINTFS, it is now a sysctl knob. 1997-05-10 11:16:22 +00:00
John-Mark Gurney
5719a93caf forgot to add the "longer" description of bktr and add an example device
line.
1997-05-10 09:23:55 +00:00
John-Mark Gurney
6baab37637 add a line for bktr (Bt848 base capture cards) to LINT. 1997-05-10 09:18:46 +00:00
Bruce Evans
1cbeae88a4 Cleaned up #includes. Lite2 cleaned up <sys/mount.h> so no kludges
are required for NFS now.

Ifdefed SMP #defines.
1997-05-10 08:01:13 +00:00
Kenjiro Cho
68713f97a1 merge ATM driver 1997-05-09 12:19:06 +00:00
Peter Wemm
4d37268944 Fatal trap 13: Brain fault, commit botched.
Current task:     transcribing patch
Time:             for a coffee
Faulting address: bde
1997-05-09 09:46:50 +00:00
Peter Wemm
230ebd9559 Bandaid old register offset code after md_regs changed type..
Submitted by: Eivind Eklund <perhaps@yes.no>
1997-05-09 04:02:58 +00:00
Peter Wemm
894c517fd6 Add _BSD_CLOCKID_T_ and _BSD_TIMER_T_ for posix clock/timer support
Obtained from: NetBSD
1997-05-08 13:45:43 +00:00
Steve Passe
c2855f6e47 fix bug in get_isa_apic_mask() where EISA bus was ignored.
Submitted by:	 Peter Wemm <peter@spinner.DIALix.COM>
1997-05-07 22:25:27 +00:00
Peter Wemm
d021fc112b Don't allow access to illegal addresses in /dev/kmem to panic kernel
(eg: above 0xffc00000).  Programs using /dev/kmem are implicitly racing
the kernel, and can get right up high in memory.  I've been running
these for some time now, but with printfs.  It's saved two panics at
least that I can remember.
1997-05-07 20:32:41 +00:00
Peter Wemm
1f8745a9c3 clean up forked child creation. This is simplified also by having
md_regs being struct trapframe *.  Do a npxsave() if needed and copy the
pcb rather than use the increasingly defunct savectx().  Copy %edi and
%ebp explicitly.

Submitted by: bde

XXX npxproc could be declared in npx.h so the externs with smp fruit
are not needed.
1997-05-07 20:19:18 +00:00
Peter Wemm
914970e6e9 md_regs is struct trapframe * now, rather than int []
Remove TF_REGP() macro and use.  The original reason (address space
problems due to having UPAGES in mapped into user space) is gone.  It
looks cleaner without it.
1997-05-07 20:12:47 +00:00
Peter Wemm
835834c085 md_regs is now a struct trapframe * 1997-05-07 20:08:53 +00:00
Peter Wemm
8359d00f20 forgotten comment 1997-05-07 20:07:25 +00:00
Peter Wemm
213fdd8050 md_regs is a struct trapframe * now, not int [] 1997-05-07 20:05:45 +00:00
Peter Wemm
36428e6100 simplify IOPL gain/remove privs code. It's easier with md_regs
being a trapframe.
1997-05-07 20:02:38 +00:00
Peter Wemm
06884fd04e remove now redundant (struct trapframe *) cast 1997-05-07 19:58:13 +00:00
Peter Wemm
6f486a5552 Convert md_regs from an int[] to a struct trapframe *. It simplifies
some code.
1997-05-07 19:55:13 +00:00
Peter Wemm
2263dd148e remove #include "opt_smp.h"
remove declarations for the SMPcurproc[NCPU] etc arrays. There was no
need to mention NCPU there, and they've been moved to their normal home.
1997-05-07 19:53:20 +00:00
Peter Wemm
f40e607832 remove #include "opt_smp.h" and <machine/smp.h>. Slightly elaborate on
a comment.
1997-05-07 19:51:59 +00:00
Peter Wemm
b34b547455 remove #include "opt_smp.h" 1997-05-07 19:50:31 +00:00
Peter Wemm
503c887bae remove #include opt_smp.h
declare SMPcurpcb[] next to #define and uniprocessor counterpart
1997-05-07 19:49:32 +00:00