Commit Graph

2284 Commits

Author SHA1 Message Date
Jake Burkholder
e39756439c Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
Tor Egge
5bb4998cca Reintroduce a workaround for a gas bug (misassembled lgdt instruction)
Use .code16 for the real mode part of the AP bootstrap trampoline code.
2000-05-25 21:33:52 +00:00
Peter Wemm
9f85bc03de pmap_enter() masked off the page offset bits, pmap_kenter() did not.
This (I believe) is the cause of the XFree86 startup and/or mptable(8)
panics when programs were reading from /dev/mem at non-page-aligned
offsets.  The offsets were being converted into random page flags in the
page tables. :-(   (including PG_PS = 4MB page size)
2000-05-24 14:22:22 +00:00
Jun Kuriyama
569e965893 Add OPTi 82C700 chipset.
Submitted by:	sanpei@sanpei.org
PR:		kern/18155 (part of)
2000-05-24 09:03:30 +00:00
Jun Kuriyama
3cc13eb5b1 Add 440MX chipset.
Submitted by:	YOSHIMURA Hideaki <hideakiy@cs-tokyo01.chuosystem.co.jp>
References:	[bsd-nomads:13764]
2000-05-24 02:24:38 +00:00
Jake Burkholder
740a1973a6 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
David E. O'Brien
d4af7a50dc Sort the sys includes. 2000-05-22 17:09:13 +00:00
Dan Moschuk
4f14ee00f2 sysctl'ize ICMP_BANDLIM and ICMP_BANDLIM_SUPPRESS_OUTPUT.
Suggested by: des/nbm
2000-05-22 16:12:28 +00:00
Peter Wemm
0385347c1a Implement an optimization of the VM<->pmap API. Pass vm_page_t's directly
to various pmap_*() functions instead of looking up the physical address
and passing that.  In many cases, the first thing the pmap code was doing
was going to a lot of trouble to get back the original vm_page_t, or
it's shadow pv_table entry.

Inspired by: John Dyson's 1998 patches.

Also:
Eliminate pv_table as a seperate thing and build it into a machine
dependent part of vm_page_t.  This eliminates having a seperate set of
structions that shadow each other in a 1:1 fashion that we often went to
a lot of trouble to translate from one to the other. (see above)
This happens to save 4 bytes of physical memory for each page in the
system.  (8 bytes on the Alpha).

Eliminate the use of the phys_avail[] array to determine if a page is
managed (ie: it has pv_entries etc).  Store this information in a flag.
Things like device_pager set it because they create vm_page_t's on the
fly that do not have pv_entries.  This makes it easier to "unmanage" a
page of physical memory (this will be taken advantage of in subsequent
commits).

Add a function to add a new page to the freelist.  This could be used
for reclaiming the previously wasted pages left over from preloaded
loader(8) files.

Reviewed by:	dillon
2000-05-21 12:50:18 +00:00
Greg Lehey
3320b1fe44 Correct previous commit: solve the "stopped clock" syndrome in remote
kernel debugger.
2000-05-18 02:29:23 +00:00
Mike Smith
f0ba8e211c Implement real read/write barriers for the i386. Despite the comment in
previous versions of this file, some barrier functionality is required.
2000-05-18 00:06:10 +00:00
Mike Smith
642ba07a24 If we are running in APIC_IO mode, pretend that we didn't see the BIOS
reporting an AT PIC.  We do this because otherwise the PIC will claim
IRQ 2 in an unshareable mode, preventing other devices from legitimately
using it.

For symmetry, in !APIC_IO mode, ignore the APIC if it's reported.

This is a hack; a better solution would have the PIC's driver release
the IRQ if it was not going to be active.
2000-05-17 19:44:16 +00:00
Tim Vanderhoek
214d1c55f7 Change to comments only: spell FreeBSD.org correctly 2000-05-13 11:21:19 +00:00
John Baldwin
558d6032c2 Turn on USB support for most USB devices. udbp is not turned on since
NETGRAPH is not present in GENERIC at the moment.  Also, change some
settings to support USB installs:

- Add KBD_INSTALL_CDEV as an option to make /dev/kbd[01] actually work.
- Turn on keyboard probing in sc0.  The syscons driver will now use a
  flag documented in ukbd(4) but not in sc(4) that tells syscons to
  actively search for a keyboard device if none is found.  This allows
  USB keyboards to just be plugged in and instantly start working.
- Require the atkbd0 driver to actually probe to see if a keyboard is
  there.  This allows USB keyboards to be seen by sc0 if an AT keyboard
  isn't plugged into the computer.  This also means that you will no
  longer be able to plug an AT keyboard into a machine after it has
  booted a GENERIC kernel and use it.  AT keyboards aren't designed for
  this anyway.  USB keyboards are designed for this, and they work.
2000-05-12 03:05:35 +00:00
Peter Wemm
933676242d Move <machine/ipl.h> outside #ifdef SMP because it supplies AST_RESCHED.
Without this, it shows up as an undefined symbol in /kernel. (!)
(This looks very freaky when doing a nm /kernel!)
2000-05-11 02:32:36 +00:00
David E. O'Brien
fc81cf82e9 1. `movl' is for use with 32-bit operands. Do NOT use it with 16-bit
operands.  `movw' could be used, but instead let the assembler decide
   the right instruction to use.
2. AT&T asm syntax requires a leading '*' in front of the operand for
   indirect calls and jumps.
2000-05-10 01:24:23 +00:00
David E. O'Brien
25f0103084 When using _asm{} in GCC, one must specify the operand's size if one
specifies the instruction's operation size.  GCC will default to 32-bit
operands reguardless of the prototype (ie, formal parameters' type)
of an inline function.
2000-05-10 01:15:55 +00:00
David E. O'Brien
7ff3366e73 Do not specify the size to move. Allow the assembler to figure it out. 2000-05-10 01:06:39 +00:00
Poul-Henning Kamp
9626b608de Separate the struct bio related stuff out of <sys/buf.h> into
<sys/bio.h>.

<sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall
not be made a nested include according to bdes teachings on the
subject of nested includes.

Diskdrivers and similar stuff below specfs::strategy() should no
longer need to include <sys/buf.> unless they need caching of data.

Still a few bogus uses of struct buf to track down.

Repocopy by:    peter
2000-05-05 09:59:14 +00:00
Garrett Wollman
54f1d0cefe Add a little do-nothing ``slopsucker'' device which gives a home
to PNP0c04 (legacy ISA coprocessor support).  Tourist info.
2000-05-04 23:57:32 +00:00
Mike Smith
ac9b3dacb2 Don't assume that the PCI BIOS is going to clear the unused bits in %ecx
when it returns.
2000-05-04 17:44:55 +00:00
Doug White
776d0c43b4 I mentioned yesterday that I could use some work, and Kelly says, "Commit my
PRs!"  So here I go.

Add definitions for some of the AMD CPU feature bits.  Also add a comment on
where to find the rest of them. This is a purely cosmetic change.

PR:		i386/14438
Submitted by:	Kelly Yancey <kbyanc@egroups.net>
2000-05-03 18:07:30 +00:00
Warner Losh
0ab302bfbe Move sn and cs drivers from the compat section to the real section.
Enable xe driver now that I've had reports that it works.

PR: 18323
Submitted by: MIHIRA Yoshiro-san
2000-05-03 00:49:57 +00:00
Nick Hibma
b5ea1f0c77 The USB double bulk pipe driver (Host to host cables). Currently there
are two supported chips, the NetChip 1080 (only prototypes available)
and the EzLink cable. Any other cable should be supported however as they
are all very much alike (there is a difference between them wrt
performance).

It uses Netgraph.

This driver was mostly written by Doug Ambrisko and Julian Elischer and
I would like to thank Whistle for yet another contribution. And my
aplogies to them for me sitting on the driver for so long (2 months).

Also, many thanks to Reid Augustin from NetChip for providing me with a
prototype of their 1080 chip.

Be aware of the fact that this driver is very immature and has only been
tested very lightly. If someone feels like learning about Netgraph however
this is an excellent driver to start playing with.
2000-05-01 22:48:23 +00:00
Peter Wemm
ab063af911 Move the MSG* and SEM* options to opt_sysvipc.h
Remove evil allocation macros from machdep.c (why was that there???) and
use malloc() instead.
Move paramters out of param.h and into the code itself.
Move a bunch of internal definitions from public sys/*.h headers (without
#ifdef _KERNEL even) into the code itself.

I had hoped to make some of this more dynamic, but the cost of doing
wakeups on all sleeping processes on old arrays was too frightening.
The other possibility is to initialize on the first use, and allow
dynamic sysctl changes to parameters right until that point. That would
allow /etc/rc.sysctl to change SEM* and MSG* defaults as we presently
do with SHM*, but without the nightmare of changing a running system.
2000-05-01 13:33:56 +00:00
Peter Wemm
621372ff84 Mark two functions as private. 2000-04-29 07:48:37 +00:00
Greg Lehey
12216bb553 Fix a long-standing bug which caused massive character loss in remote
serial gdb: interrupts were causing either overruns or stealing
characters.  Put splhigh() around the routines which transfer packets
across the line.  Since this happens when the system is halted in
debug, this doesn't cause any particular problem.  Now it is possible
to run the link at 115,200 bps.

PR:    (not assigned yet, must be in limbo somewhere)

Add partial support for detecting non-existent gdb devices.

Add $FreeBSD$ tag.
2000-04-25 01:41:57 +00:00
David E. O'Brien
b0e56cde37 * Use sys/sys/random.h rather than a i386 specific one.
* There was nothing that should be machine dependant about
  i386/isa/random_machdep.c, so it is now sys/kern/kern_random.c.
2000-04-24 17:30:08 +00:00
Yoshihiro Takahashi
5de4ba3c6f Disable PCI BIOS on PC-98. 2000-04-23 10:30:09 +00:00
Yoshihiro Takahashi
b39b38ecd0 - PC-98 uses IRQ2 too.
- Fixed the range of DMA channels on PC-98.

Submitted by:	"T.Yamaoka" <taka@windows.squares.net>
2000-04-22 15:19:22 +00:00
Luoqi Chen
c71d557034 IO apics are not necessarily page aligned, they are only required to be aligned
on 1K boundary. Correct a typo that would cause problem to a second IO apic.

Pointed out by:	Steve Passe	<smp.csn.net>
2000-04-20 14:40:11 +00:00
Poul-Henning Kamp
ed6aff7387 Remove unneeded <sys/buf.h> includes.
Due to some interesting cpp tricks in lockmgr, the LINT kernel shrinks
by 924 bytes.
2000-04-18 15:15:39 +00:00
Mike Smith
300451c472 Some more i386-only BIOS-friendliness:
- Add support for using the PCI BIOS functions for configuration space
   accesses, and make this the default.

 - Make PNPBIOS the default (obsoletes the PNPBIOS config option).

 - Add two new boot-time tunables to disable each of the above.
2000-04-16 20:48:33 +00:00
Jeroen Ruigrok van der Werven
aec5a3b342 Fix typo, extentions -> extensions
Submitted by:	George Cox <gjvc@sophos.com>
2000-04-15 18:46:15 +00:00
Poul-Henning Kamp
8177437d85 Complete the bio/buf divorce for all code below devfs::strategy
Exceptions:
        Vinum untouched.  This means that it cannot be compiled.
        Greg Lehey is on the case.

        CCD not converted yet, casts to struct buf (still safe)

        atapi-cd casts to struct buf to examine B_PHYS
2000-04-15 05:54:02 +00:00
Warner Losh
0d5c223da4 Awi driver, ported from NetBSD from Atsushi Once-san.
From the README:
	Any IEEE 802.11 cards use AMD Am79C930 and Harris (Intersil) Chipset
	with PCnetMobile firmware by AMD.
	   BayStack 650   1Mbps Frequency Hopping PCCARD adapter
	   BayStack 660   2Mbps Direct Sequence PCCARD adapter
	   Icom SL-200    2Mbps Direct Sequence PCCARD adapter
	   Melco WLI-PCM  2Mbps Direct Sequence PCCARD adapter
	   NEL SSMagic    2Mbps Direct Sequence PCCARD adapter
	   Netwave AirSurfer Plus
			  1Mbps Frequency Hopping PCCARD adapter
	   Netwave AirSurfer Pro
			  2Mbps Direct Sequence PCCARD adapter

Known Problems:
	WEP is not supported.
	Does not create IBSS itself.
	Cannot configure the following on FreeBSD:
		selection of infrastructure/adhoc mode
		ESSID
		...

Submitted by: Atsushi Onoe <onoe@sm.sony.co.jp>
2000-04-06 02:48:48 +00:00
Hellmuth Michaelis
afb8931fa8 Remove obsolete reference to PCVT_FREEBSD. 2000-04-04 13:14:43 +00:00
Mike Smith
48bb080006 Remove the !(I386 & SMP) tests; we don't run SMP on an i386 system, and
they break the LINT build.
2000-04-03 06:02:00 +00:00
Matthew Dillon
7c8fdcbd19 Make the sigprocmask() and geteuid() system calls MP SAFE. Expand
commentary for copyin/copyout to indicate that they are MP SAFE as
    well.

Reviewed by: msmith
2000-04-02 17:52:43 +00:00
Poul-Henning Kamp
c244d2de43 Move B_ERROR flag to b_ioflags and call it BIO_ERROR.
(Much of this done by script)

Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.

Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.

Add bio_queue field for struct bio aware disksort.

Address a lot of stylistic issues brought up by bde.
2000-04-02 15:24:56 +00:00
Peter Wemm
255108f385 Make sysv-style shared memory tuneable params fully runtime adjustable
via sysctl.  It's done pretty simply but it should be quite adequate.
Also move SHMMAXPGS from $machine/include/vmparam.h as the comments that
went with it were wrong... we don't allocate KVM space for the pages so
that comment is bogus..  The only practical limit is how much physical
ram you want to lock up as this stuff isn't paged out or swap backed.
2000-03-30 07:17:05 +00:00
KATO Takenori
61b64fdb1e PC-98 BIOS copies the DX register into its work area. The value of it
shows `CPUID' and it is useful to identify CPU.  So, it is copied from
BIOS work area to the cpu_id variable (PC-98 only).

Submitted by:	chi@bd.mbn.or.jp (Chiharu Shibata)
2000-03-29 13:45:40 +00:00
Matthew Dillon
bd5caafc4d The SMP cleanup commit broke need_resched, this fixes that and also
removed unncessary MPLOCKED and 'lock' prefixes from the interrupt
    nesting level, since (A) the MP lock is held at the time, and (B) since
    the neting level is restored prior to return any interrupted code
    will see a consistent value.
2000-03-29 06:15:43 +00:00
KATO Takenori
91cb959ddb Added indirect pio into the bus space stuff for the NEC PC-98. bus.h
includes one of bus_at386.h and bus_pc98.h. Becuase only bus_pc98.h
supports indirect pio and bus_at386.h is identical to old bus.h, there
is no functional change in PC-AT's kernels.  That is, it cannot cause
performance loss.

Submitted by:	nyan
Reviewed by:	imp
bde and luoqi provided useful comments for earlier version.
2000-03-29 03:15:22 +00:00
Matthew Dillon
db6a426158 The SMP cleanup commit broke UP compiles. Make UP compiles work again. 2000-03-28 18:06:49 +00:00
Matthew Dillon
36e9f877df Commit major SMP cleanups and move the BGL (big giant lock) in the
syscall path inward.  A system call may select whether it needs the MP
    lock or not (the default being that it does need it).

    A great deal of conditional SMP code for various deadended experiments
    has been removed.  'cil' and 'cml' have been removed entirely, and the
    locking around the cpl has been removed.  The conditional
    separately-locked fast-interrupt code has been removed, meaning that
    interrupts must hold the CPL now (but they pretty much had to anyway).
    Another reason for doing this is that the original separate-lock for
    interrupts just doesn't apply to the interrupt thread mechanism being
    contemplated.

    Modifications to the cpl may now ONLY occur while holding the MP
    lock.  For example, if an otherwise MP safe syscall needs to mess with
    the cpl, it must hold the MP lock for the duration and must (as usual)
    save/restore the cpl in a nested fashion.

    This is precursor work for the real meat coming later: avoiding having
    to hold the MP lock for common syscalls and I/O's and interrupt threads.
    It is expected that the spl mechanisms and new interrupt threading
    mechanisms will be able to run in tandem, allowing a slow piecemeal
    transition to occur.

    This patch should result in a moderate performance improvement due to
    the considerable amount of code that has been removed from the critical
    path, especially the simplification of the spl*() calls.  The real
    performance gains will come later.

Approved by: jkh
Reviewed by: current, bde (exception.s)
Some work taken from: luoqi's patch
2000-03-28 07:16:37 +00:00
Matthew Dillon
7c58e473f5 Commit the buffer cache cleanup patch to 4.x and 5.x. This patch fixes a
fragmentation problem due to geteblk() reserving too much space for the
    buffer and imposes a larger granularity (16K) on KVA reservations for
    the buffer cache to avoid fragmentation issues.  The buffer cache size
    calculations have been redone to simplify them (fewer defines, better
    comments, less chance of running out of KVA).

    The geteblk() fix solves a performance problem that DG was able reproduce.

    This patch does not completely fix the KVA fragmentation problems, but
    it goes a long way

Mostly Reviewed by: bde and others
Approved by: jkh
2000-03-27 21:29:33 +00:00
Dan Moschuk
6ad9d70260 Include a space between hash ('#') and 'Berkeley packet filter' like
all the other comments have.
2000-03-21 17:00:58 +00:00
Poul-Henning Kamp
91266b96c4 Isolate the Timecounter internals in their own two files.
Make the public interface more systematically named.

Remove the alternate method, it doesn't do any good, only ruins performance.

Add counters to profile the usage of the 8 access functions.

Apply the beer-ware to my code.

The weird +/- counts are caused by two repocopies behind the scenes:
	kern/kern_clock.c -> kern/kern_tc.c
	sys/time.h -> sys/timetc.h
(thanks peter!)
2000-03-20 14:09:06 +00:00
Poul-Henning Kamp
21144e3bf1 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new
field in struct buf: b_iocmd.  The b_iocmd is enforced to have
exactly one bit set.

B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.

Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.

Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue.  It is likely to write on your disk
where it should have been reading.

This change is a step in the direction towards a stackable BIO capability.

A lot of this patch were machine generated (Thanks to style(9) compliance!)

Vinum users:  Greg has not had time to test this yet, be careful.
2000-03-20 10:44:49 +00:00