Commit Graph

945 Commits

Author SHA1 Message Date
jake
961b97d434 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
jake
d93fbc9916 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
peter
ee5cd6988f 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
obrien
3ec0c45221 We use a MI version of this now, which is mostly this file repo copied to
dev/ppbus/lptio.h.
2000-05-19 18:25:23 +00:00
msmith
41be544213 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
obrien
5cfeff679b 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
nyan
4135c72d72 Fixed bus_space_{read,write}_region_* functions.
Pointed out:	Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
2000-05-07 14:46:15 +00:00
jlemon
eb42c6c103 Make in_cksum() a macro call to in_cksum_skip(), since it provides the
same functionality.  Sharing code should help cache issues.

Remove in_cksum_partial, since its not being used, and we now have
a way to compute partial checksums on mbuf chains.
2000-05-06 18:18:32 +00:00
peter
22f6069a2a Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
obrien
a8c8e00c91 * 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
msmith
087c82acdb 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
roger
8123ede1fe Add multiple #include protection
Submitted by:	 Thomas Klausner <wiz@danbala.ifoer.tuwien.ac.at>
2000-04-04 16:46:19 +00:00
hm
5ff131474a Add support for "green" saver mode. 2000-03-31 08:29:21 +00:00
peter
7f3e149212 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
jlemon
6a7dfc7767 Change the mbuf size from 128 -> 256. Increasing the mbuf header size
caused some headers not to fit in MHLEN any more.  This matches the
current size on the alpha, so it shouldn't cause problems.

Problem observed by:	   Geoff Rehmet <geoff@is.co.za>
Originally suggested by:   shin
2000-03-29 05:39:04 +00:00
kato
7af5f89a60 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
dillon
b852fcb160 The SMP cleanup commit broke UP compiles. Make UP compiles work again. 2000-03-28 18:06:49 +00:00
hm
f548f3dd8d pcvt cleanup.
remove obsolete stuff resulting from the pcvt kernel part cleanup.
2000-03-28 09:29:50 +00:00
dillon
689641c1ea 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
jlemon
0dcc5bc0d1 Add support for offloading IP/TCP/UDP checksums to NIC hardware which
supports them.
2000-03-27 19:14:27 +00:00
jhb
8c16543d94 Update sysinstall to use struct uc_device instead of struct isa_device
for generating /boot/kernel.conf.  Since this structure is shared, move
its definition out to a header file, just as struct isa_device was defined
in a header file.  This fixes the sysinstall breakage in -current.
2000-03-24 22:24:09 +00:00
cracauer
b5d5962ead Exchange numerical values for FPE_INTDIV and FPE_INTOVF, so that they
are compatible with the older ones implemented in FreeBSD 3.x.

PR:		15488
2000-03-20 10:22:19 +00:00
yokota
b91cbcb4f1 - Add Support for the following PS/2 mice:
- Microsoft IntelliMouse Explorer: 2 buttons on top, 2 side buttons
    and a wheel which also acts as the middle button.  The mouse is
    recognized as "IntelliMouse Explorer".
  - Genius NetScroll Optical: 2 buttons on top, 2 side buttons and a
    wheel which also acts as the middle button.  The mouse is recognized
    as "NetMouse/NetScroll Optical".
  - MouseSystems SmartScroll Mouse (OEM from Genius?): 3 buttons on top,
    1 side button and a wheel.  The mouse is recognized as Genius
    "NetScroll".
  - IBM ScrollPoint: 2 buttons on top and a stick between the buttons.
    The stick can perform "horizontal scroll" in W*ndows environment.
    The horizontal movement of the stick is detected.  It is currently
    mapped to the Z axis movement in the same way as the first wheel.
    The mouse is recognized as "MouseMan+", as it is considered to be
    a variation of MouseMan.
  - A4 Tech 4D and 4D+ mice. These mice have two wheels! The movement
    of the second wheel is reported as the Z axis movement in the
    same way as the first wheel. These mice are recognized as "4D
    Mouse" and "4D+ Mouse".
  - Tweak IntelliMouse support code a bit so that less-than-compatible
    wheel mice can work properly with the psm driver.
- Add driver configuration flags which correspond to the kernel
  options PSM_HOOKRESUME and PSM_RESETAFTERSUSPEND, so that we don't
  need to recompile the kernel when we need these functions.
- Properly keep track of the irq resource.
- Add a watchdog timer in case interrupts are lost (experimental).
- Add `detach' function (experimental).
2000-03-18 15:21:40 +00:00
cracauer
f91f7a8aee Change the default FPU control word so that exceptions for new
processes are now masked until set by fpsetmask(3).

Submitted by:	bde
Approved by:	jkh, bde
2000-03-10 17:56:33 +00:00
dufault
0bdb67cb26 Patches that eliminate extra context switches in FIFO case.
Fixes p1003_1b regression test in the simple case of no RR and
FIFO processes competing.

Reviewed by:	jkh, bde
2000-03-02 16:20:07 +00:00
bsd
c35cba881c Fix an __asm operand constraint which broke the -O3 and -O0 builds.
Submitted by:	Seigo Tanimura <tanimura@freebsd.org>
Approved by:	jkh
2000-02-21 13:06:50 +00:00
bsd
85f1c223b3 Don't forget to reset the hardware debug registers when a process that
was using them exits.

Don't allow a user process to cause the kernel to take a TRCTRAP on a
user space address.

Reviewed by:	jlemon, sef
Approved by:	jkh
2000-02-20 20:51:23 +00:00
obrien
098aba5560 Document the support in the kernel for hardware debug registers on the
ix86 platform which allows for hardware watchpoints, etc...

Submitted by:	Brian Dean <brdean@unx.sas.com>
2000-02-12 18:33:54 +00:00
wpaul
648f1c0043 Add support for WEP (encryption) for silver and gold WaveLAN/IEEE turbo cards.
Also update wicontrol to enable/disable encryption, set WEP keys and set the
TX key index. Silver cards only have 40-bit keys. This is something of a quick
hack, but it works well enough for me to commit this from the LinuxWorld
exhibit floor.

The WEP support only shows up if you have a card that supports it.

Would have been approved by: jkh, if he hadn't wandered off somewhere
Approved in his place by: msmith, who's standing right here
2000-02-02 17:59:13 +00:00
bde
9fe8ef8eba Fixed the profiling version ALTENTRY(). Again. The previous version
didn't set up the frame pointer before calling mcount, and then jumped
to the wrong place in ENTRY() to defeat the point of the jump.
2000-01-25 09:01:55 +00:00
roger
1405ac9364 Update to driver 2.07
Add new Channel Set for France. Submitted by Daniel Dagneaux <dagneaux@lure.u-psud.fr>
2000-01-24 14:00:34 +00:00
peter
7023b084df Remove old specialix pre-newbus specialix driver. It lives on in
sys/dev/si now, including with a theoretically working eisa attachment.
2000-01-24 08:18:26 +00:00
jasone
271b33587d Move ENTRY and ALTENTRY definitions to asm.h where they belong.
Unbreak profiling.  Again.

Submitted by:	bde
2000-01-20 03:15:01 +00:00
sheldonh
c7c45620bc Protect the i386 machine-dependant type definitions of __int64_t
and __uint64_t from lint(1) with /* LONGLONG */ comments.
2000-01-14 10:41:39 +00:00
mdodd
c945c09e3c Allow SMP systems with an MCA bus to work properly.
Reviewed by:	peter
2000-01-13 09:09:02 +00:00
bde
69fd902223 Fixed style bugs related to the access functions for the bsfl and bsrl
i386 instructions.
2000-01-09 16:46:03 +00:00
luoqi
35b4c17c79 Allow SMP && NCPU == 1 to work. From now on, there's no restriction on the
value of NCPU relative to the number of cpus physically present, the actual
number of cpus utilized will be the smaller of the two.
2000-01-07 08:49:25 +00:00
tegge
8bfa846d93 ISA device drivers use the ISA source interrupt number in locations where
the low level interrupt handler number should be used.  Change
setup_apic_irq_mapping() to allocate low level interrupt handler X (Xintr${X})
for any ISA interrupt X mentioned in the MP table.

Remove an assumption in the driver for the system clock (clock.c) that
interrupts mentioned in the MP table as delivered to IOAPIC #0 intpin Y
is handled by low level interrupt handler Y (Xintr${Y}) but don't assume
that low level interrupt handler 0 (Xintr0) is used.

Don't allocate two low level interrupt handlers for the system clock.
Reviewed by:	NOKUBI Hirotaka <hnokubi@yyy.or.jp>
2000-01-04 22:24:59 +00:00
peter
15b9bcb121 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 04:46:21 +00:00
hm
e5044a69c9 update to isdn4bsd beta release 0.90 1999-12-14 20:54:38 +00:00
peter
903db590c7 Reclaim UPAGES_HOLE (8k) that was chopped out of process address space.
The UPAGES have not been there since Jan '96, but the hole was preserved
for BSD/OS binary compatability.  This has been fixed other ways (%ebx
now has a pointer to PS_STRINGS), and the stack is nowhere near where
it used to be so this hack isn't required anymore.
1999-12-11 10:54:06 +00:00
luoqi
5c9244cd12 User ldt sharing. 1999-12-06 04:53:08 +00:00
peter
1dab24f283 Switch over to using the generic joy driver 1999-12-05 20:02:19 +00:00
marcel
7abb3f060e oszsigcode -> szosigcode
Pointed out by: bde
1999-12-04 10:53:39 +00:00
marcel
404e06a7ba Fix type of sf_addr.
Pointed out by: bde
1999-12-04 10:40:24 +00:00
bde
4955977bad Moved scheduling-related code to kern_synch.c so that it is easier to fix
and extend.  The new function containing the code is named schedclock()
as in NetBSD, but it has slightly different semantics (it already handles
incrementation of p->p_cpticks, and it should handle any calling frequency).

Agreed with in principle by:	dufault
1999-11-27 12:32:27 +00:00
wpaul
d0da4e010d Update the WaveLAN/IEEE driver:
- Convert to new bus attachment scheme. Thanks to Blaz Zupan for doing
  the initial work here. One thing I changed was to have the attach
  and detach routines work like the PCI drivers, which means that in
  theory you should be able to load and unload the driver like the PCI
  NIC drivers, however the pccard support for this hasn't settled down
  yet so it doesn't quite work. Once the pccard work is done, I'll have
  to revisit this.

- Add device wi0 to PCCARD. If we're lucky, people should be able to
  install via their WaveLAN cards now.

- Add support for signal strength caching. The wicontrol utility has
  also been updated to allow zeroing and displaying the signal strength
  cache.

- Add a /sys/modules/wi directory and fix a Makefile to builf if_wi.ko.
  Currently this module is only built for the i386 platform, though once
  the pccard stuff is done it should be able to work on the alpha too.
  (Theoretically you should be able to plug one of the WaveLAN/IEEE ISA
  cards into an alpha with an ISA slot, but we'll see how that turns out.

- Update LINT to use only device wi0. There is no true ISA version of
  the WaveLAN/IEEE so we'll never use an ISA attachment.

- Update files.i386 so that if_wi is dependent on card.
1999-11-25 20:45:49 +00:00
dillon
9429fb5919 Optimize two cases in the MP locking code. First, it is not necessary
to use a locked cmpexg when unlocking a lock that we already hold, since
      nobody else can touch the lock while we hold it.  Second, it is not
      necessary to use a locked cmpexg when locking a lock that we already
      hold, for the same reason.  These changes will allow MP locks to be used
      recursively without impacting performance.

      Modify two procedures that are called only by assembly and are already
      NOPROF entries to pass a critical argument in %edx instead of on the
      stack, removing a significant amount of code from the critical path
      as a consequence.

Reviewed by:	Alfred Perlstein <bright@wintelcom.net>, Peter Wemm <peter@netplex.com.au>
1999-11-19 22:47:19 +00:00
dillon
1ac9471dbc Optimize two cases in the MP locking code. First, it is not necessary
to use a locked cmpexg when unlocking a lock that we already hold, since
    nobody else can touch the lock while we hold it.  Second, it is not
    necessary to use a locked cmpexg when locking a lock that we already
    hold, for the same reason.  These changes will allow MP locks to be used
    recursively without impacting performance.

    Modify two procedures that are called only by assembly and are already
    NOPROF entries to pass a critical argument in %edx instead of on the
    stack, removing a significant amount of code from the critical path
    as a consequence.

Reviewed by:	Alfred Perlstein <bright@wintelcom.net>, Peter Wemm <peter@netplex.com.au>
1999-11-19 16:49:30 +00:00
luoqi
bd6a600078 Segment registers can be read(write) to(from) memory locations as well as
general registers.
1999-11-15 19:45:19 +00:00