Commit Graph

482 Commits

Author SHA1 Message Date
Jonathan Lemon
eb9d435ae7 Unifdef VM86.
Reviewed by:	silence on on -current
1999-06-01 18:20:36 +00:00
Poul-Henning Kamp
6deb5a62cc Stop the TSC from being used as timecounter on K5/step0 machines. 1999-05-29 06:57:55 +00:00
Luoqi Chen
0f0fe5a4c5 Unbreak VESA on SMP. 1999-05-12 21:39:07 +00:00
Luoqi Chen
cd121c9cae Yet another place I missed when increasing trapframe size, which causes problem
to SIGFPE handling.

Reviewed by:	Bruce Evans	<bde@zeta.org.au>
1999-05-11 16:29:21 +00:00
Peter Wemm
0264a0ebd1 loadandclear() uses an atomic instruction (even on SMP, where it's an
implicitly LOCK'ed instruction), so there shouldn't be any harm in making
it volatile pointer compatable for one of the users of it.  It seems to
generate the same code regardless.
1999-05-09 23:30:01 +00:00
Peter Wemm
9c06a38614 Make sure the mem_range_AP_init() prototype is seen where it's needed, and
#ifdef SMP around it for fun.
1999-05-08 17:48:22 +00:00
Bruce Evans
ea2b3e3d1b Fixed profiling of elf kernels. Made high resolution profiling compile
for elf kernels (it is broken for all kernels due to lack of egcs support).

Renaming of many assembler labels is avoided by declaring by declaring
the labels that need to be visible to gprof as having type "function"
and depending on the elf version of gprof being zealous about discarding
the others.  A few type declarations are still missing, mainly for SMP.

PR:		9413
Submitted by:	Assar Westerlund <assar@sics.se> (initial parts)
1999-05-06 09:44:57 +00:00
Mike Smith
4a034f21cd Add a hook that can be called to initialise a slave processor's memory
range attributes after they have been extracted from the master.

Hook up the i686 MP code to do this for each AP.

Be more careful about printing the default memory type for the i686.

Suggestions from: luoqi
1999-04-30 22:09:45 +00:00
Luoqi Chen
5206bca10a Enable vmspace sharing on SMP. Major changes are,
- %fs register is added to trapframe and saved/restored upon kernel entry/exit.
- Per-cpu pages are no longer mapped at the same virtual address.
- Each cpu now has a separate gdt selector table. A new segment selector
  is added to point to per-cpu pages, per-cpu global variables are now
  accessed through this new selector (%fs). The selectors in gdt table are
  rearranged for cache line optimization.
- fask_vfork is now on as default for both UP and SMP.
- Some aio code cleanup.

Reviewed by:	Alan Cox	<alc@cs.rice.edu>
		John Dyson	<dyson@iquest.net>
		Julian Elischer	<julian@whistel.com>
		Bruce Evans	<bde@zeta.org.au>
		David Greenman	<dg@root.com>
1999-04-28 01:04:33 +00:00
Dmitrij Tejblum
0666dbe1cf Moved cpu_set_fork_handler's prototype from <machine/cpu.h> to <sys/proc.h>.
Suggested by:	bde
1999-04-23 20:22:44 +00:00
Tor Egge
87c737bc83 Backout early start of APs since it caused some machines to hang. 1999-04-13 03:24:47 +00:00
Tor Egge
44c57e7121 Add prototype for wait_ap(). 1999-04-11 00:43:43 +00:00
Tor Egge
90c26b0d2d Let BSP wait until all APs are initialized. 1999-04-10 22:58:29 +00:00
Peter Wemm
bfda1e3ff7 Disable the mtrr copy calls, it doesn't work with the i686_mem.c stuff.
This should make it compile/link again.
1999-04-07 17:08:40 +00:00
Mike Smith
1f2d03c05e Add defines for the P6 model-specific registers. 1999-04-07 03:58:15 +00:00
John Polstra
4fe88fe637 Restore support for executing BSD/OS binaries on the i386 by passing
the address of the ps_strings structure to the process via %ebx.
For other kinds of binaries, %ebx is still zeroed as before.

Submitted by:	Thomas Stephens <tas@stephens.org>
Reviewed by:	jdp
1999-04-03 22:20:03 +00:00
Alan Cox
087e80a934 Put in place the infrastructure for improved UP and SMP TLB management.
In particular, replace the unused field pmap::pm_flag by pmap::pm_active,
which is a bit mask representing which processors have the pmap activated.
(Thus, it is a simple Boolean on UPs.)

Also, eliminate an unnecessary memory reference from cpu_switch()
in swtch.s.

Assisted by:	John S. Dyson <dyson@iquest.net>
Tested by:	Luoqi Chen <luoqi@watermarkgroup.com>,
		Poul-Henning Kamp <phk@critter.freebsd.dk>
1999-04-02 17:59:49 +00:00
David Greenman
8681b974c1 Increased kernel virtual address space to 1GB. NOTE: You MUST have fixed
bootblocks in order to boot the kernel after this! Also note that this
change breaks BSDI BSD/OS compatibility.
Also increased default NKPT to 17 so that FreeBSD can boot on machines
with >=2GB of RAM. Booting on machines with exactly 4GB requires other
patches, not included.
1999-03-11 18:28:46 +00:00
Bruce Evans
efc96764e0 The magic "no-cpu" cpu number is 0xff. Don't misrepresent cpu
numbers as chars or use bogus casts in an attempt to unmisrepresnt
them.  In top, don't assume that 0xff is the only negative cpu
number when cpu numbers are (mis)represented.
1999-03-05 16:38:13 +00:00
David Greenman
37cd370c97 Correct casts in vtophys and avtophys to be vm_offset_t. 1999-03-02 16:20:39 +00:00
Tor Egge
79a7a64b85 Don't call assign_apic_irq with a value for irq that is out of range. 1999-02-26 03:42:50 +00:00
Bruce Evans
025a06fd58 Added a per-cpu variable `switchticks' for use in scheduling. 1999-02-22 15:13:34 +00:00
Luoqi Chen
1c6d46f93c Introduce machine-dependent macro pgtok() to convert page count to number
of kilobytes. Its definition for each architecture could be optimized to
avoid potential numerical overflows.
1999-02-19 19:34:49 +00:00
Luoqi Chen
b1028ad122 Hide access to vmspace:vm_pmap with inline function vmspace_pmap(). This
is the preparation step for moving pmap storage out of vmspace proper.

Reviewed by:	Alan Cox	<alc@cs.rice.edu>
		Matthew Dillion	<dillon@apollo.backplane.com>
1999-02-19 14:25:37 +00:00
John Polstra
0aca4b60dc On the i386, load the ELF dynamic linker where an mmap(0, ...) would
put it, just like on the Alpha.  It was wrong to load it at the
fixed address 0x08000000.  That should only be done if the dynamic
linker is an executable (not a shared object) with a specific load
address encoded in the object file itself.

This fixes the recent breakage in the Linux emulator.
1999-02-19 01:30:43 +00:00
John Polstra
47633640aa Change the load address of the ELF dynamic linker from "2L*MAXDSIZ"
to an architecture-specific value defined in <machine/elf.h>.  This
solves problems on large-memory systems that have a high value for
MAXDSIZ.

The load address is controlled by a new macro ELF_RTLD_ADDR(vmspace).
On the i386 it is hard-wired to 0x08000000, which is the standard
SVR4 location for the dynamic linker.

On the Alpha, the dynamic linker is loaded MAXDSIZ bytes beyond
the start of the program's data segment.  This is the same place
a userland mmap(0, ...) call would put it, so it ends up just below
all the shared libraries.  The rationale behind the calculation is
that it allows room for the data segment to grow to its maximum
possible size.

These changes have been tested on the i386 for several months
without problems.  They have been tested on the Alpha as well,
though not for nearly as long.  I would like to merge the changes
into 3.1 within a week if no problems have surfaced as a result of
them.
1999-02-07 23:49:56 +00:00
KATO Takenori
921bc385e8 Recognize Pentium II Xeon, Celeron and Pentium III cpus. Because CPU
names are printed on their packages and shown by BIOS, kernel does not
need to show details.

PR:		8751, 9320 and 9463
1999-02-04 16:48:26 +00:00
Bruce Evans
79a2501238 Added a hopefully-machine-independent macro for determining if a
reschedule is pending.
1999-02-02 09:08:23 +00:00
Matthew Dillon
3cfc69e6c2 More -Wall / -Wcast-qual cleanup. Also, EXEC_SET can't use
C_DECLARE_MODULE due to the linker_file_sysinit() function
    making modifications to the data.
1999-01-29 08:36:45 +00:00
Mark Newton
27286ca9a8 Sun Bug ID 1251858 (on http://sunsolve1.sun.com) discusses the way that
Sun implemented iBCS2 compatibility on Solaris >= 2.6:  The emulator
runs in user-mode, patching the LDT so that client programs making
syscalls through the old iBCS2 call gate get handled by the emulator
process.  Unemulated syscalls therefore need their own call-gate that
bypasses the emulator.  Sun chose LDT entry 4 to implement this, which
is what we've been using as LUDATA_SEL, so we need to change LUDATA_SEL
if we want to run Solaris executables.

Discussed with: Mike Smith
1999-01-28 11:45:49 +00:00
Matthew Dillon
0a5e03dda5 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 01:59:53 +00:00
Jordan K. Hubbard
c71d51c375 Make more messages conditional on bootverbose 1999-01-20 04:24:22 +00:00
Eivind Eklund
1950f59007 Silence warnings. 1999-01-12 00:19:33 +00:00
Bruce Evans
896763fa9e Don't put operands in clobber lists, since this is dubious for old
versions of gcc and broken for current versions of egcs.

Submitted by:	"John S. Dyson" <dyson@iquest.net> but rewritten by me
1999-01-09 13:00:27 +00:00
Bruce Evans
f48bbd5fb8 Fixed some style bugs. Clarified a comment. 1999-01-08 19:51:02 +00:00
Bruce Evans
2a32c15f45 Unspammed includes in <machine/cpufunc.h> in the !SMP case. Partially
unspammed them in the SMP case.
1999-01-08 19:17:49 +00:00
Bruce Evans
68ba369606 Moved declarations related to copying and zeroing to the right place. 1999-01-08 16:29:59 +00:00
Archie Cobbs
f1d19042b0 The "easy" fixes for compiling the kernel -Wunused: remove unreferenced static
and local variables, goto labels, and functions declared but not defined.
1998-12-07 21:58:50 +00:00
Tor Egge
f0ac792bec Attempt to handle interrupts delivered to all IO APICs by using the first
IO APIC with a sufficient number of pins.
1998-11-26 23:14:23 +00:00
Eivind Eklund
9fcdafaefc Staticize. 1998-11-26 18:50:24 +00:00
Eivind Eklund
38cc2d9316 Move the declaration of PPro_vmtrr from the header file to pmap.c,
replacing the one in the header file with a definition.  This makes it
easier to work with tools that grok ANSI C only.
1998-11-24 20:25:52 +00:00
Mike Smith
35d27a0f39 Add the ability to specify where on the at_shutdown queue a handler is
installed.

Remove cpu_power_down, and replace it with an entry at the end of the
SHUTDOWN_FINAL queue in the only place it's used (APM).

Submitted by:	Some ideas from Bruce Walter <walter@fortean.com>
1998-10-30 05:41:15 +00:00
Garrett Wollman
46365a874a A small fragment of new ISA framework: manifest constants for the resources
implemented by the i386 root nexus.
1998-10-29 01:56:23 +00:00
Peter Wemm
034db87204 Add an ELF_MACHINE_OK() macro for compatability with the Alpha version. 1998-10-18 15:31:23 +00:00
KATO Takenori
7344a7bb2e mp_machdep.c: Set a vector to boot code (PC-98).
locore.s: Tell the bios to warmboot next time (PC-98).
1998-10-10 13:37:16 +00:00
KATO Takenori
ed68ba2cd0 PC-98 doesn't have CMOS ram. 1998-10-10 09:38:02 +00:00
KATO Takenori
5baef6cd27 BIOS ROM base address is 0xe8000 on PC-98. 1998-10-08 16:15:22 +00:00
KATO Takenori
4536af6a70 - Implement enabling write allocate on AMD K5/K6/K6-2 cpus.
The code was originaly contributed by Kelly Yancey
  <kbyanc@freedomnet.com> in PR i386/6269 and revised by Akio Morita
  <amorita@meadow.scphys.kyoto-u.ac.jp> and me.  Test was performed by
  Akio Morita and Toshiomi Moriki <moriki@db.is.kyushu-u.ac.jp>.
- Fix stylistic bug in identcpu.c.
- Update copyright in initcpu.c
- Fix typo in LINT.

PR:		6269 and 6270
1998-10-06 13:16:29 +00:00
Bruce Evans
0c71101cb7 Don't pretend to support ix86's with 16-bit ints by using longs just
to ensure 32-bit variables.  Doing so broke ix86's with 64-bit longs.
1998-09-29 09:06:00 +00:00
Peter Wemm
10baba4b95 Goodbye BOUNCE_BUFFERS, for a hack it has served us well.
The last consumer of this code (the old SCSI system) has left us and
the CAM code does it's own bouncing.  The isa dma system has been
doing it's own bouncing for a while too.

Reviewed by:	core
1998-09-25 17:34:49 +00:00