Commit Graph

3573 Commits

Author SHA1 Message Date
Warner Losh
8822b75696 Remove ctx driver. another scanner. This one uses COMPAT_ISA shims
which is going away soon.

If someone updates this to the latest APIs and tests it, it can return.
2004-03-14 05:27:30 +00:00
Warner Losh
9ddf1ac910 Remove asc driver, support for GI1904 based hand scanners. This
driver uses COMPAT_ISA shims, and those shims are going away.

It can be brought back if someone updates it to the latest APIs, and
moves it to the appropriate place in the tree.
2004-03-14 04:57:28 +00:00
Warner Losh
e08b187c65 Remove wt driver. It still uses COMPAT_ISA_DRIVER which is going away
very soon.

Users needing this driver should update it to a newer API.
2004-03-14 04:46:52 +00:00
Tom Rhodes
a122cca953 These are changes to allow to use the Intel C/C++ compiler (lang/icc)
to build the kernel. It doesn't affect the operation if gcc.

Most of the changes are just adding __INTEL_COMPILER to #ifdef's, as
icc v8 may define __GNUC__ some parts may look strange but are
necessary.

Additional changes:
 - in_cksum.[ch]:
   * use a generic C version instead of the assembly version in the !gcc
     case (ASM code breaks with the optimizations icc does)
     -> no bad checksums with an icc compiled kernel
     Help from:		andre, grehan, das
     Stolen from: 	alpha version via ppc version
     The entire checksum code should IMHO be replaced with the DragonFly
     version (because it isn't guaranteed future revisions of gcc will
     include similar optimizations) as in:
        ---snip---
          Revision  Changes    Path
          1.12      +1 -0      src/sys/conf/files.i386
          1.4       +142 -558  src/sys/i386/i386/in_cksum.c
          1.5       +33 -69    src/sys/i386/include/in_cksum.h
          1.5       +2 -0      src/sys/netinet/igmp.c
          1.6       +0 -1      src/sys/netinet/in.h
          1.6       +2 -0      src/sys/netinet/ip_icmp.c

          1.4       +3 -4      src/contrib/ipfilter/ip_compat.h
          1.3       +1 -2      src/sbin/natd/icmp.c
          1.4       +0 -1      src/sbin/natd/natd.c
          1.48      +1 -0      src/sys/conf/files
          1.2       +0 -1      src/sys/conf/files.amd64
          1.13      +0 -1      src/sys/conf/files.i386
          1.5       +0 -1      src/sys/conf/files.pc98
          1.7       +1 -1      src/sys/contrib/ipfilter/netinet/fil.c
          1.10      +2 -3      src/sys/contrib/ipfilter/netinet/ip_compat.h
          1.10      +1 -1      src/sys/contrib/ipfilter/netinet/ip_fil.c
          1.7       +1 -1      src/sys/dev/netif/txp/if_txp.c
          1.7       +1 -1      src/sys/net/ip_mroute/ip_mroute.c
          1.7       +1 -2      src/sys/net/ipfw/ip_fw2.c
          1.6       +1 -2      src/sys/netinet/igmp.c
          1.4       +158 -116  src/sys/netinet/in_cksum.c
          1.6       +1 -1      src/sys/netinet/ip_gre.c
          1.7       +1 -2      src/sys/netinet/ip_icmp.c
          1.10      +1 -1      src/sys/netinet/ip_input.c
          1.10      +1 -2      src/sys/netinet/ip_output.c
          1.13      +1 -2      src/sys/netinet/tcp_input.c
          1.9       +1 -2      src/sys/netinet/tcp_output.c
          1.10      +1 -1      src/sys/netinet/tcp_subr.c
          1.10      +1 -1      src/sys/netinet/tcp_syncache.c
          1.9       +1 -2      src/sys/netinet/udp_usrreq.c

          1.5       +1 -2      src/sys/netinet6/ipsec.c
          1.5       +1 -2      src/sys/netproto/ipsec/ipsec.c
          1.5       +1 -1      src/sys/netproto/ipsec/ipsec_input.c
          1.4       +1 -2      src/sys/netproto/ipsec/ipsec_output.c

          and finally remove
            sys/i386/i386        in_cksum.c
            sys/i386/include     in_cksum.h
        ---snip---
 - endian.h:
   * DTRT in C++ mode
 - quad.h:
   * we don't use gcc v1 anymore, remove support for it
   Suggested by:	bde (long ago)
 - assym.h:
   * avoid zero-length arrays (remove dependency on a gcc specific
     feature)
     This change changes the contents of the object file, but as it's
     only used to generate some values for a header, and the generator
     knows how to handle this, there's no impact in the gcc case.
   Explained by:	bde
   Submitted by:	Marius Strobl <marius@alchemy.franken.de>
 - aicasm.c:
   * minor change to teach it about the way icc spells "-nostdinc"
   Not approved by:	gibbs (no reply to my mail)
 - bump __FreeBSD_version (lang/icc needs to know about the changes)

Incarnations of this patch survive gcc compiles since a loooong time,
I use it on my desktop. An icc compiled kernel works since Nov. 2003
(exceptions: snd_* if used as modules), it survives a build of the
entire ports collection with icc.

Parts of this commit contains suggestions or submissions from
Marius Strobl <marius@alchemy.franken.de>.

Reviewed by:	-arch
Submitted by:	netchild
2004-03-12 21:45:33 +00:00
Poul-Henning Kamp
dc08ffec87 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
Poul-Henning Kamp
8e1f1df080 Device megapatch 3/6:
Add missing D_TTY flags to various drivers.

Complete asserts that dev_t's passed to ttyread(), ttywrite(),
ttypoll() and ttykqwrite() have (d_flags & D_TTY) and a struct tty
pointer.

Make ttyread(), ttywrite(), ttypoll() and ttykqwrite() the default
cdevsw methods for D_TTY drivers and remove the explicit initializations
in various drivers cdevsw structures.
2004-02-21 20:41:11 +00:00
Poul-Henning Kamp
c9c7976f7f Device megapatch 1/6:
Free approx 86 major numbers with a mostly automatically generated patch.

A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.
2004-02-21 19:42:58 +00:00
Bruce Evans
1203f5be25 Fixed a misplaced ifdef that prevented npx.c building without "device isa"
ISA.  npx has few isa dependencies, but it does unconditional outb()'s to
the isa bus in the !SMP case, and it attaches to isa if "device isa" is
configured in order to support PNP-ISA.  The ifdef for the latter was
misplaced.

PR:		62595
2004-02-13 18:04:51 +00:00
Peter Pentchev
f7644f46f0 Fix a typo in kan's last commit: cnavaiable() -> cnavailable() 2004-02-05 10:02:20 +00:00
Alexander Kabaev
e99c09e2dc Eliminate global cons_unavailable flag and replace it by the status
bit maintained on a per-device basis. Single variable is inadequate
on machines running with multiple consoles enabled.
2004-02-05 01:56:43 +00:00
John Baldwin
7a9d7023a2 Revert the skipping of segment register reloads as it appears to actually
be a pessimization on non Pentium4 CPUs.  More importantly, it is buggy as
it can cause GPF's when using APM or vm86.
2004-02-03 22:00:42 +00:00
John Baldwin
5352136a25 Optimize the i386 interrupt entry code to not reload the segment registers
if they already contain the correct kernel selectors.

Reviewed by:	peter
Suggested by:	peter
2004-01-28 20:44:08 +00:00
Joerg Wunsch
d93dea685d Fix a long-standing bug that had been introduced in rev 1.24 with the
replacement of struct proc by struct thread.  This bug could cause a
NULL pointer dereferencation under certain circumstances (e. g. while
running /etc/rc.d/pcvt).
2004-01-07 10:12:59 +00:00
John Baldwin
c8d7ed0d05 - Use i8259A register defines from shared sys/dev/ic/i8259.h rather than
from the i386-specific icu.h.
- Replace PC98 magic numbers with equivalent register define values along
  with comments about PC-98 "quirks".
2004-01-06 19:07:08 +00:00
Warner Losh
6631471980 First part of the removal of drivers for hardware that isn't relevant
or whose drivers haven't even compiled for years.

The loran hardware was very unique, and only a few copies of it ever
existed.  It used the old COMPAT_ISA_DRIVER and when the author was
contacted, he indicated that he had no intention of ever updating this
driver and it was no longer relevant to the FreeBSD world and can be
removed without impact to anybody.

Approved by: phk
2003-12-07 03:51:19 +00:00
Warner Losh
b8b831f0ad Remove cx in its old location.
Approved by: re@ <scottl>
2003-12-03 23:07:37 +00:00
Bruce Evans
933a354fe5 Fixed breakage of the pci case of the cy driver by the new interrupt
code.  Both the driver and the new code were wrong.  Driver interrupt
handlers are supposed to take "void *vsc" arg, but some including all
COMPAT_ISA drivers and the pci part of the cy driver want an "int unit"
arg.  They got this using bogus casts of function pointers which should
have kept working despite their bogusness.  However, the new interrupt
code doesn't honor requests to pass an arg of ((void *)0), so things
are very broken if the arg is actually a representation of unit 0.

The fix is to use a normal "void *vsc" arg for the pci case and a
wrapper for the COMPAT_ISA case (of the cy driver).  This cleans up
new-busification of the pci case but takes the COMPAT_ISA case a little
further from new-bus.  The corresponding bug for the COMPAT_ISA case
has already been fixed similarly using a wrapper in compat_isa.c and
we need another wrapper just to undo that.

Fixed some directly related style bugs (mainly by removing compatibility
cruft).

cy.c:
Fixed an indirectly related old bug in cyattach_common().  A wrong status
was returned in the unlikely event that malloc() failed.

Approved by:	re (scottl)
2003-12-02 12:36:00 +00:00
John Baldwin
6006b8f4c6 Add a special check for a stray IRQ 7 or IRQ 15 to see if it is actually
a spurious interrupt from one of the 8259As.  If so, don't log it as a
stray IRQ, but just silently ignore it.

Approved by:	re (rwatson)
2003-11-19 15:40:23 +00:00
John Baldwin
8c770ed571 - Add counts to the ATPIC interrupt sources and point the ATPIC interrupt
source count pointers at them so that intr_execute_handlers() won't
  choke when it tries to handle an unregisterd ATPIC interrupt source.
- Install the low-level ATPIC interrupt handlers when we first program the
  ATPIC in atpic_startup() rather than at SI_SUB_INTR.  This is only
  necessary to work around buggy code that enables interrupts too early
  in the boot process (namely, the vm86 code).

Approved by:	re (rwatson)
2003-11-19 15:38:56 +00:00
Bruce Evans
095ab45bde Restored the call to schedsofttty() (now spelled swi_sched(...)) again.
Its restoration in rev.1.102 was mistranslated to the equivalent of
setsofttty() in rev.1.105.  This increased overheads by causing a
context switch to the SWI handler after almost every interrupt.  The
increase was approx. 50% on a Celeron 366 (from 23 usec to 34 usec
per interrupt).
2003-11-16 13:31:45 +00:00
Bruce Evans
416ab90e6b Localized the cy driver's locking. 2003-11-16 00:55:54 +00:00
John Baldwin
64bb257f0b Always install IDT entries for ATPIC interrupt sources. The APIC no
longer uses these interrupt vectors for its ISA interrupt pins, so these
entries will not be overwritten.  If we get a spurious interrupt from the
ATPIC when using the APIC, it will be treated as a stray interrupt instead
of causing a panic.
2003-11-14 21:02:49 +00:00
Peter Wemm
2edfe38b10 "opt_auto_eoi.h" is not used here anymore. See atpic.c. 2003-11-14 20:06:24 +00:00
John Baldwin
f082493f10 Replace magic numbers with macros for i8259A register constants. Still
need the ICW4 bits for PC98 though.
2003-11-14 19:13:06 +00:00
John Baldwin
be06bd496f - Bring in constants for 8259A registers from amd64 with some updated
comments from NetBSD's dev/ic/i8259A.h.  These bits really belong in
  a file of the same name as well, but this will do for now.
- Axe unused HWI_MASK.
2003-11-14 19:12:25 +00:00
Poul-Henning Kamp
daf9092bcd Don't disable the TSC with statclock_disable. 2003-11-13 10:02:12 +00:00
John Baldwin
bd9cd7e3f7 - Move manipulation of td_intr_nesting_level out of assembly interrupt
vector stubs and into the C functions they call.
- Move disabling and EOIing of interrupt sources out of PIC driver entry
  points and into intr_execute_handlers().  Intr_execute_handlers() only
  disables a source for an interrupt if it is a stray interrupt or has
  threaded handlers.  Sources with fast handlers no longer disable (mask)
  the source while executing the handlers.
- Move the setting of clkintr_pending into intr_execute_handlers() and set
  the variable for any interrupt source with a vector of 0.  (Should only
  be true for IRQ 0.)  This fixes clkintr_pending in the NO_MIXED_MODE
  case.
- Implement lapic_eoi() and use it to implement ioapic_eoi_source().
- Rename atpic_sched_ithd() to atpic_handle_intr() since it is used to
  handle all atpic interrupts and not just threaded ones.

Inspired by:	peter's changes to amd64 in p4 (1)
Requested by:	bde (2)
2003-11-12 18:13:57 +00:00
Seigo Tanimura
512824f8f7 - Implement selwakeuppri() which allows raising the priority of a
thread being waken up.  The thread waken up can run at a priority as
  high as after tsleep().

- Replace selwakeup()s with selwakeuppri()s and pass appropriate
  priorities.

- Add cv_broadcastpri() which raises the priority of the broadcast
  threads.  Used by selwakeuppri() if collision occurs.

Not objected in:	-arch, -current
2003-11-09 09:17:26 +00:00
John Baldwin
3de744b5d8 Use a wrapper around the driver interrupt handler. The wrapper accepts the
isa_device pointer as its argument and uses that to call the driver's
interrupt handler passing the unit number as its argument.  This should
fix COMPAT_OLDISA devices with a unit number of 0.

Reviewed by:	peter
Reported by:	bde
2003-11-04 19:04:54 +00:00
Yoshihiro Takahashi
dc5f261df8 Fix LINT 2003-11-04 14:02:13 +00:00
Yoshihiro Takahashi
0ca1bf3907 Fix to support pc98. 2003-11-04 13:13:04 +00:00
Yoshihiro Takahashi
95755cc99b Split pc98 support into pc98/pc98/nmi.c. 2003-11-04 13:01:41 +00:00
John Baldwin
892f579780 Remove remaining bits of old interrupt and APIC code. 2003-11-03 22:51:25 +00:00
John Baldwin
73adfd0ca0 Catch up to interrupt code changes. 2003-11-03 22:37:28 +00:00
John Baldwin
b9c72be725 - Export doreti as a global symbol.
- Don't include isa/vector.s.  Each PIC driver's entry points now live in
  their own standalone files.
2003-11-03 22:08:52 +00:00
John Baldwin
6f92bdd0c1 New APIC support code:
- The apic interrupt entry points have been rewritten so that each entry
  point can serve 32 different vectors.  When the entry is executed, it
  uses one of the 32-bit ISR registers to determine which vector in its
  assigned range was triggered.  Thus, the apic code can support 159
  different interrupt vectors with only 5 entry points.
- We now always to disable the local APIC to work around an errata in
  certain PPros and then re-enable it again if we decide to use the APICs
  to route interrupts.
- We no longer map IO APICs or local APICs using special page table
  entries.  Instead, we just use pmap_mapdev().  We also no longer
  export the virtual address of the local APIC as a global symbol to
  the rest of the system, but only in local_apic.c.  To aid this, the
  APIC ID of each CPU is exported as a per-CPU variable.
- Interrupt sources are provided for each intpin on each IO APIC.
  Currently, each source is given a unique interrupt vector meaning that
  PCI interrupts are not shared on most machines with an I/O APIC.
  That mapping for interrupt sources to interrupt vectors is up to the
  APIC enumerator driver however.
- We no longer probe to see if we need to use mixed mode to route IRQ 0,
  instead we always use mixed mode to route IRQ 0 for now.  This can be
  disabled via the 'NO_MIXED_MODE' kernel option.
- The npx(4) driver now always probes to see if a built-in FPU is present
  since this test can now be performed with the new APIC code.  However,
  an SMP kernel will panic if there is more than one CPU and a built-in
  FPU is not found.
- PCI interrupts are now properly routed when using APICs to route
  interrupts, so remove the hack to psuedo-route interrupts when the
  intpin register was read.
- The apic.h header was moved to apicreg.h and a new apicvar.h header
  that declares the APIs used by the new APIC code was added.
2003-11-03 21:53:38 +00:00
John Baldwin
223e573bbd Add the new atpic(4) driver for the 8259A master and slave PICs. By
default we provide 16 interrupt sources for IRQs 0 through 15.  However,
if the I/O APIC driver has already registered sources for any of those IRQs
then we will silently fail to register our own source for that IRQ.

Note that i386/isa/icu.h is now specific to the 8259A and no longer
contains any info relevant to APICs.  Also note that fast interrupts no
longer use a separate entry point.  Instead, both fast and threaded
interrupts share the same entry point which merely looks up the appropriate
source and passes control to intr_execute_handlers().
2003-11-03 21:34:45 +00:00
John Baldwin
e14243fac7 Move the NMI handling code out to its own file. 2003-11-03 21:10:17 +00:00
John Baldwin
8d8dbef5ac Remove soon to be obsolete file to break kernel build while the new
interrupt code comes in.
2003-11-03 21:00:34 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Brooks Davis
c020a92f9f There is no way to enter the attach routine twice with the same softc
without a detach call in between so don't try to deal with that
possiability.

This is a diff-reduction commit for the upcoming if_xname conversion.
2003-10-30 19:45:58 +00:00
Bruce Evans
ed86674a3d Don't forget to load %es with the kernel data segment selector in
Xcpustop().  %es is used in at least the call to savectx() when savectx()
calls bcopy(), so not loading it was fatal if a stop IPI interrupts
user mode.

This reduces bugs starting and stopping CPUs for debuggers.  CPUs are
stopped mainly in kdb_trap() and cpu_reset().  At reset time there is
a good chance that all the CPUs are in the kernel, so the bug was
probably harmless then.
2003-10-16 10:44:24 +00:00
Doug Rabson
5f16902f7e Add a workaround for the fact that the priv field was removed from
struct driver. We were the last user of that field (and we are scheduled
for demolition) so there wasn't much point in keeping it.
2003-10-16 09:18:35 +00:00
Bruce Evans
fa2e26c437 MFsio (sio.c 1.413: cleaned up and fixed setting of speeds in comparam()).
This is just a cleanup here (modulo rev.1.108 of kern/tty.c), since the
input speed can be different from to output speed and extra code to
handle both speeds naturally handled all cases.
2003-09-27 12:40:23 +00:00
Bruce Evans
7872ac5542 Quick fix for bitrot in locking in the SMP case. cd_getreg() and
cd_setreg() were still using !(read_eflags() & PSL_I) as the condition
for the lock hidden by COM_LOCK() (if any) being held.  This worked
when spin mutexes and/or critical_enter() used hard interrupt disablement,
but it has caused recursion on the non-recursive mutex com_mtx since
all relevant interrupt disablement became soft.  The recursion is
harmless unless there are other bugs, but it breaks an invariant so
it is fatal if spinlocks are witnessed.
2003-09-27 10:30:03 +00:00
Poul-Henning Kamp
3623186cbc Initialize cn_name, ignore cn_dev. 2003-09-26 08:51:54 +00:00
Warner Losh
00dc18b5a8 Per TRB vote: restore the aquire_timer0 and associated goo. This will
be gone in FreeBSD 6, so put BURN_BRIDGES around it.  The TRB also
felt that if something better comes along sooner, it can be used to
replace this code.

Delayed by: BSDcon and subsequent disk crash.
2003-09-24 15:33:33 +00:00
John Baldwin
0e85b19ba9 Add constants for entries in the IDT and use those instead of magic
numbers.
2003-09-10 01:07:04 +00:00
Bruce Evans
4df0520624 clock.c:
Quick fix for calling DELAY() for ddb input in some (atkbd-based)
console drivers.  ddb must not use any normal locks, but DELAY()
normally calls getit() which needs clock_lock.  One problem with using
normal locks in ddb is that deadlock is possible, but deadlock on
clock_lock is unlikely becaluse clock_lock is bogusly recursive,
apparently just to hide the problem of ddb using it.  The i8254 clock
hardware has mostly write-only registers so it is important for it to
use a lock that gives exclusive access.  (atkbd hardware is also
unfriendly to reentrant software but that problem is more local and
already solved.)  I mostly saw the symptoms of the bug caused by
unlocking in getit() running cpu_unpend().  cpu_unpend() should not
be called while in ddb and Debugger() calls for failing assertions
about this caused a breakpoint within ddb.

ddb must also not call getit() because ddb may be being used to step
through clock initialization code that has stopped or otherwise mangled
the clock.  If the clock is stopped, then getit() always returns the
same value and DELAY() takes forever if it trusts getit().

The quick fix is implement DELAY(n) as (n * timer_freq / 1000000)
inb(0x84)'s if ddb is active.

machdep.c:
Don't permit recursion on clock_lock.
2003-09-07 14:23:08 +00:00
Peter Wemm
116b8c8695 Mark the isa compat shims for BURN_BRIDGES for 6.0 2003-09-05 14:55:11 +00:00
Peter Wemm
b324e86370 Clean up some antique stuff. We do not support Weitek FPUs etc, and never
did.
2003-09-05 14:54:26 +00:00
Yoshihiro Takahashi
f2a610fa25 Fix compile error. 2003-08-25 08:13:07 +00:00
Warner Losh
afe1c7ba84 Even though this driver says it is broken, fix the location of the pci
include files.
2003-08-23 16:59:16 +00:00
Poul-Henning Kamp
78a49a45bc Give timecounters a numeric quality field.
A timecounter will be selected when registered if its quality is
not negative and no less than the current timecounters.

Add a sysctl to report all available timecounters and their qualities.

Give the dummy timecounter a solid negative quality of minus a million.

Give the i8254 zero and the ACPI 1000.

The TSC gets 800, unless APM or SMP forces it negative.

Other timecounters default to zero quality and thereby retain current
selection behaviour.
2003-08-16 08:23:53 +00:00
Poul-Henning Kamp
8dcee923b5 remove acquire_timer0() and release_timer0() and related stuff. 2003-08-15 15:50:49 +00:00
Poul-Henning Kamp
c43001fc56 As warned: Initiate deorbit burn for the pcaudio driver. 2003-08-15 14:56:05 +00:00
Jacques Vidrine
007e25d95a Add or correct range checking of signal numbers in system calls and
ioctls.

In the particular case of ptrace(), this commit more-or-less reverts
revision 1.53 of sys_process.c, which appears to have been erroneous.

Reviewed by:	iedowse, jhb
2003-08-10 23:04:55 +00:00
Poul-Henning Kamp
2fbc275447 Dont initialize a TSC timecounter until we know if it is broken or not. 2003-08-06 15:05:27 +00:00
Bruce Evans
1c5fa550e8 Broke the warning that the cx driver (cronyx.c, cx,c and if_cx.c) uses
pessimal (u_short) types for i/o ports.  I don't understand the data
structures in this driver well enough to unpessimize the types.
2003-08-06 11:05:42 +00:00
Bruce Evans
55a6f50b8d Don't use pessimal (u_short) types for i/o ports. This is mainly for
completenss.  The pessimization is tiny compared with i/o port slowness
except on very old machines, but code that used signed short types for
i/o ports was unpessimized long ago, and the macro that detected it
recently started working for u_short types too.  Use of bus space
should have made this moot long ago.

Not tested at runtime by:  bde
2003-08-05 20:11:50 +00:00
Robert Drehmel
266c520a5a Changed the data types of three index variables, two of them
in the `video_state' structure, to larger ones (from u_char to
u_short).  Each can now hold values at least as large as the
size of the array it is meant to point into.

This eliminates warnings printed by GCC 3.3.1 and hence makes
pcvt compilable using -Werror.
2003-07-27 14:01:33 +00:00
Peter Wemm
a35b33869d Initiate de-orbit burn for fpu-less operation. 386+387 is still
theoretically supportable, but you'd really be happier with FreeBSD 2.1.8
on it.
2003-07-22 08:11:17 +00:00
Robert Drehmel
fcaec66af7 Make the 80x60, 132x25, 132x43, 132x50, and 132x60 VESA text modes
work when using a graphics chipset which identifies itself as
`VIA CLE266', used in some VIA EPIA boards.  Two values need to be
patched in the VESA mode information structure: the widths of the modes
mentioned above are encoded in a format which was unknown to the VESA
module (and to my copy of the VBE spec.) whereas the window memory
segment values seem to be just incorrect.

I tested this on a VIA EPIA-M9000 and -M10000.
2003-07-18 00:06:10 +00:00
Peter Wemm
e95babf3a8 unifdef -DLAZY_SWITCH and start to tidy up the associated glue. 2003-07-10 01:02:59 +00:00
John Baldwin
5cc1a74e77 Silly compile fixes from resource_disabled() commit.
Reported by:	tinderbox
Pointy hat to:	jhb
2003-07-03 14:33:17 +00:00
John Baldwin
8a9bc9c03b - Use the new resource_disabled() helper function to see if devices are
disabled.
- Change the apm driver to match the acpi driver's behavior by checking to
  see if the device is disabled in the identify routine instead of in the
  probe routine.  This way if the device is disabled it is never created.

Note that a few places (ips(4), Alpha SMP) used "disable" instead of
"disabled" for their hint names, and these hints must be changed to
"disabled".  If this is a big problem, resource_disabled() can always be
changed to honor both names.
2003-07-02 16:09:02 +00:00
John-Mark Gurney
b9d3718a18 fix another LP64 problem. READ_IVAR takes a pointer to an uintptr_t, not
an int.
2003-06-20 07:22:54 +00:00
John Baldwin
6b9691f103 - Use IDTVEC() to declare IPI handlers since they are also IDT vectors.
- Make handlers for IPI's used by SMP kernels #ifdef SMP.
2003-06-06 17:45:25 +00:00
David E. O'Brien
006124d811 Use __FBSDID(). 2003-06-02 16:32:55 +00:00
Poul-Henning Kamp
670966596b Remove unused variable(s).
Found by:       FlexeLint
2003-05-31 20:29:34 +00:00
Poul-Henning Kamp
9a3454805e Don't rely on boolean expression evaluating to 1 or 0 by default.
Found by:       FlexeLint
2003-05-31 20:23:46 +00:00
Poul-Henning Kamp
78b52202d0 Fix indentation.
Found by:       FlexeLint
2003-05-31 19:02:20 +00:00
Poul-Henning Kamp
e64f402ff1 Hang softc from dev_t 2003-05-31 18:56:58 +00:00
Poul-Henning Kamp
03841f4eec Eliminate potential overflows by allocating softc dynamically,
removing at the same time the need for this to be a "count" config
option.

Found by:       FlexeLint
2003-05-31 17:06:20 +00:00
John Baldwin
ace85d0a3c Style nits.
Approved by:	re (bmah)
2003-05-07 17:21:38 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Warner Losh
5899148189 After careful review of this driver, I'm pretty sure it would take a
lot of work to make this driver work under current.  In the past when
people wanted to remove xten, I was the only one in the way.  After
talking to fsmp@ (last person to make real changes to this driver)
about this, I'm convinced it is better left in the dust-bin of history

Approved by: re@ (scottl)
2003-04-27 05:30:52 +00:00
Poul-Henning Kamp
a300701213 Don't include <sys/disklabel.h> 2003-04-16 20:57:35 +00:00
Matthew N. Dodd
2836b6d03e - Set if_unit, if_init, and ifq_maxlen.
- Remove unnecessary initializations; ether_ifattach() takes care of them.
- Change function argument types to avoid nasty casts.
2003-04-16 06:27:39 +00:00
Matthew N. Dodd
acdf797d1a Retire these files. 2003-04-07 01:25:40 +00:00
Olivier Houchard
18a6505b16 Use vm_paddr_t instead of vm_offset_t for the paddr parameter of vesa_mmap. 2003-04-05 18:08:22 +00:00
Dag-Erling Smørgrav
9f45b2da8f Define ovbcopy() as a macro which expands to the equivalent bcopy() call,
to take care of the KAME IPv6 code which needs ovbcopy() because NetBSD's
bcopy() doesn't handle overlap like ours.

Remove all implementations of ovbcopy().

Previously, bzero was a function pointer on i386, to save a jmp to
bzero_vector.  Get rid of this microoptimization as it only confuses
things, adds machine-dependent code to an MD header, and doesn't really
save all that much.

This commit does not add my pagezero() / pagecopy() code.
2003-04-04 17:29:55 +00:00
Peter Wemm
cc66ebe2a9 Commit a partial lazy thread switch mechanism for i386. it isn't as lazy
as it could be and can do with some more cleanup.  Currently its under
options LAZY_SWITCH.  What this does is avoid %cr3 reloads for short
context switches that do not involve another user process.  ie: we can
take an interrupt, switch to a kthread and return to the user without
explicitly flushing the tlb.  However, this isn't as exciting as it could
be, the interrupt overhead is still high and too much blocks on Giant
still.  There are some debug sysctls, for stats and for an on/off switch.

The main problem with doing this has been "what if the process that you're
running on exits while we're borrowing its address space?" - in this case
we use an IPI to give it a kick when we're about to reclaim the pmap.

Its not compiled in unless you add the LAZY_SWITCH option.  I want to fix a
few more things and get some more feedback before turning it on by default.

This is NOT a replacement for Bosko's lazy interrupt stuff.  This was more
meant for the kthread case, while his was for interrupts.  Mine helps a
little for interrupts, but his helps a lot more.

The stats are enabled with options SWTCH_OPTIM_STATS - this has been a
pseudo-option for years, I just added a bunch of stuff to it.

One non-trivial change was to select a new thread before calling
cpu_switch() in the first place.  This allows us to catch the silly
case of doing a cpu_switch() to the current process.  This happens
uncomfortably often.  This simplifies a bit of the asm code in cpu_switch
(no longer have to call choosethread() in the middle).  This has been
implemented on i386 and (thanks to jake) sparc64.  The others will come
soon.  This is actually seperate to the lazy switch stuff.

Glanced at by:  jake, jhb
2003-04-02 23:53:30 +00:00
Jeff Roberson
fb8aaa76c7 - In npxgetregs() use the td argument to save the fpu state from and not
curthread.  Nothing currently depends on this behavior.
 - Clean up an extra newline.

Obtained from:	bde
2003-04-01 00:16:32 +00:00
Jeff Roberson
4c8a7679d0 - In npxsetregs don't set the floating point if td == fpcurthread not if
curthread == fpcurthread.  This is important when we're saving the fp
   state for a thread other than curthread as in from set_mcontext.
2003-03-31 00:32:43 +00:00
Matthew N. Dodd
3330d5fb09 - Change ELINK_ID_PORT; the 3c507 likes 0x100 better.
- Add module metadata.
2003-03-29 13:18:20 +00:00
Jake Burkholder
227f9a1c58 - Add vm_paddr_t, a physical address type. This is required for systems
where physical addresses larger than virtual addresses, such as i386s
  with PAE.
- Use this to represent physical addresses in the MI vm system and in the
  i386 pmap code.  This also changes the paddr parameter to d_mmap_t.
- Fix printf formats to handle physical addresses >4G in the i386 memory
  detection code, and due to kvtop returning vm_paddr_t instead of u_long.

Note that this is a name change only; vm_paddr_t is still the same as
vm_offset_t on all currently supported platforms.

Sponsored by:	DARPA, Network Associates Laboratories
Discussed with:	re, phk (cdevsw change)
2003-03-25 00:07:06 +00:00
Matthew N. Dodd
257427efe3 Retire sys/pc98/pc98/spkr.c 2003-03-24 21:01:54 +00:00
Matthew N. Dodd
b7b5ae3edb Use repo-copied files in sys/i386/bios. 2003-03-24 19:14:46 +00:00
Matthew N. Dodd
868d8b6286 - Use if_broadcastaddr from struct ifnet rather than relying on
extern 'etherbroadcastaddr'.
- Make 'etherbroadcastaddr' static.

Reviewed by:	 imp
2003-03-21 17:53:16 +00:00
Poul-Henning Kamp
b4b138c27f Including <sys/stdint.h> is (almost?) universally only to be able to use
%j in printfs, so put a newsted include in <sys/systm.h> where the printf
prototype lives and save everybody else the trouble.
2003-03-18 08:45:25 +00:00
Poul-Henning Kamp
d42ee4e410 Note that MAJOR_AUTO is now the default if d_maj is not initialized. This
is more robust and prevents the hijacking of /dev/console for the typical
mistake.

Remove unneeded MAJOR_AUTO uses, it is only needed explicitly now if the
driver source has cross-branch compatibility to old releases.
2003-03-09 11:03:45 +00:00
Peter Wemm
3c6b084e96 Finish driving a stake through the heart of netns and the associated
ifdefs scattered around the place - its dead Jim!

The SMB stuff had stolen AF_NS, make it official.
2003-03-05 19:24:24 +00:00
David Schultz
9c62b3ee7c Make TTYHOG tunable.
Reviewed by:	mike (mentor)
2003-03-05 08:16:29 +00:00
Poul-Henning Kamp
182a9f7455 Make nokqfilter() return the correct return value.
Ditch the D_KQFILTER flag which was used to prevent calling NULL pointers.
2003-03-03 16:24:47 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Dag-Erling Smørgrav
521f364b80 More low-hanging fruit: kill caddr_t in calls to wakeup(9) / [mt]sleep(9). 2003-03-02 16:54:40 +00:00
Poul-Henning Kamp
f85c6d3502 Use MAJOR_AUTO. 2003-02-27 15:05:28 +00:00
Poul-Henning Kamp
4c61f9036b NODEVFS cleanup:
Don't call devsw_{add,delete}().
These two drivers are actually broken, and have been for quite some time.
2003-02-27 07:36:03 +00:00
Poul-Henning Kamp
f400e58886 msg 2003-02-26 21:01:26 +00:00
Poul-Henning Kamp
109a8a2e47 NODEVFS cleanup: Create devices with make_dev() instead of cdevsw_add() 2003-02-26 20:54:46 +00:00
Maxime Henrion
07159f9c56 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
Poul-Henning Kamp
263444cfbf Change the console interface to pass a "struct consdev *" instead of a
dev_t to the method functions.

The dev_t can still be found at struct consdev *->cn_dev.

Add a void *cn_arg element to struct consdev which the drivers can use
for retrieving their softc.
2003-02-20 20:54:45 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Julian Elischer
4a338afd7a Move a bunch of flags from the KSE to the thread.
I was in two minds as to where to put them in the first case..
I should have listenned to the other mind.

Submitted by:	 parts by davidxu@
Reviewed by:	jeff@ mini@
2003-02-17 09:55:10 +00:00
Poul-Henning Kamp
f341ca9891 Remove #include <sys/dkstat.h> 2003-02-16 14:13:23 +00:00
Poul-Henning Kamp
70d8e2e9aa Switch to using the TSC code in i386/i386/tsc.c. 2003-02-11 11:43:25 +00:00
Poul-Henning Kamp
91f1c2b3cc Split the global timezone structure into two integer fields to
prevent the compiler from optimizing assignments into byte-copy
operations which might make access to the individual fields non-atomic.

Use the individual fields throughout, and don't bother locking them with
Giant: it is no longer needed.

Inspired by:    tjr
2003-02-03 19:49:35 +00:00
Jake Burkholder
238dd3209a Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
Alfred Perlstein
04738e99b5 Catch more uses of MIN(). 2003-02-02 13:30:00 +00:00
Alfred Perlstein
8deebb0160 Consolidate MIN/MAX macros into one place (param.h).
Submitted by: Hiten Pandya <hiten@unixdaemons.com>
2003-02-02 13:17:30 +00:00
Poul-Henning Kamp
3c99c0bc50 Make tsc_freq a 64bit quantity.
Inspired by:    http://www.theinquirer.net/?article=7481
2003-01-29 11:36:39 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Matthew N. Dodd
e2fdcaf285 - Add inline functions for {ll,l,}abs() to libkern.
- Remove hand rolled abs() functions.
2003-01-15 02:02:33 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Jens Schweikhardt
d64ada501a Fix typos, mostly s/ an / a / where appropriate and a few s/an/and/
Add FreeBSD Id tag where missing.
2002-12-30 21:18:15 +00:00
David Xu
4b2d2f604c Set %bx register instead of %di register, see vbe3.0, page 45. 2002-12-26 13:20:58 +00:00
Poul-Henning Kamp
92a306a2b6 Use the correct value when writing the Day Of Week byte in the CMOS.
The correct range is [1...7] with Sunday=1, but we have been writing
[0...6] with Sunday=0.

The Soekris computers flagged the zero, zapped the date, so if you
rebooted your soekris on a sunday, it would come up with a wrong
date.

Bruce has a more extensive rework of this code, but we will stick with
the minimalist fix for now.

Spotted by:	Soren Kristensen <soren@soekris.com>
Thanks to:	Michael Sierchio <kudzu@tenebras.com>.
Confirmed by:	bde
Approved by:	re
2002-12-04 13:46:49 +00:00
Daniel Eischen
2be05b70c9 Add getcontext, setcontext, and swapcontext as system calls.
Previously these were libc functions but were requested to
be made into system calls for atomicity and to coalesce what
might be two entrances into the kernel (signal mask setting
and floating point trap) into one.

A few style nits and comments from bde are also included.

Tested on alpha by: gallatin
2002-11-16 06:35:53 +00:00
Sam Leffler
6fc32a2495 network interface and link layer changes:
o on input don't strip the Ethernet header from packets
o input packet handling is now done with if_input
o track changes to ether_ifattach/ether_ifdetach API
o track changes to bpf tapping
o call ether_ioctl for default handling of ioctl's
o use constants from net/ethernet.h where possible

Reviewed by:	many
Approved by:	re
2002-11-15 00:00:15 +00:00
Alfred Perlstein
29f194457c Fix instances of macros with improperly parenthasized arguments.
Verified by: md5
2002-11-09 12:55:07 +00:00
Matthew N. Dodd
6fe8789d6d - Convert to newbus, bus_space etc.
- Move to MI space.

Tested on:	 i386
2002-11-05 09:37:32 +00:00
David Xu
1f82496322 Fix typo. ioport_rid should be irq_rid. 2002-11-05 04:03:42 +00:00
Matthew N. Dodd
30201b6cef Merge PC98 changes. 2002-11-02 04:18:10 +00:00
Matthew N. Dodd
c7f718ec6a Handle hints for the atspeaker device.
Document same.
2002-10-28 02:00:09 +00:00
Peter Wemm
331e4823a2 Finish fixing the 5.x FPU code for dealing with signal handlers.
Obtained from:  bde
2002-10-25 19:12:16 +00:00
John Baldwin
599c57a971 - New-bussify the rc(4) device driver.
- Add detach support to the driver so that you can kldunload the module.
  Note that currently rc_detach() fails to detach a unit if any of its
  child devices are open, thus a kldunload will fail if any of the tty
  devices are currently open.
- sys/i386/isa/ic/cd180.h was moved to sys/dev/ic/cd180.h as part of
  this change.

Requested by:	rwatson
Tested by:	rwatson
2002-10-23 15:53:09 +00:00
John Baldwin
8bbdb8e89f Add an identify method that creates a pmtimer0 device if it doesn't alreedy
exist.  Hints are no longer needed to instantiate a pmtimer(4) device.
2002-10-22 17:30:52 +00:00
Brooks Davis
db394c7a54 Use if_printf() instead of printf() to print diagnositic messages in the
form "rdp#: blah".
2002-10-21 14:38:28 +00:00
Brooks Davis
36cee51404 Use if_printf(ifp, "blah") instead of
printf("%s%d: blah", ifp->if_name, ifp->if_unit).
2002-10-21 14:37:31 +00:00
Poul-Henning Kamp
05f6411a98 Remove a boatload of '&' which are surplus to the requirements.
Validated by:	md5 hash is unchanged.
2002-10-20 18:02:46 +00:00
Poul-Henning Kamp
218565dc75 Hide inline assembly if lint is defined. 2002-10-20 17:30:30 +00:00
Mitsuru IWASAKI
0ebefa8c4e 1. Fix a comment. Locking _is_ needed (but not done).
2. Update a comment.  We now restore much more than RTC updates and
   interrupts.
3. Order change.  Stop interrupts by writing to RTC_STATUSB,
   restore rate bits for the interrupts by writing to RTC_STATUSA,
   then enable interrupts again.
   This seems to be done perfectly backwards in startrtclock().
   Otherwise, the idea for this change was obtained from
   startrtclock().
4. Don't stop the clock (RTCB_HALT).  We only program some control bits
   and don't want to stop the clock.
5. (Not really related.)  Add caveats to the comment about timer_restore().
   The update is non-atomic since locking is not done.

On locking:
6. rtcin() and writertc() are locked() adequately by splhigh() in RELENG_4,
   but this locking is null in -current.
7. Doing things in the correct order in (3) combined with (6) is probably
   enough locking for rtcrestore() in RELENG_4.  In -current, the
   writertc()'s race with rtcintr() unless the BIOS disables RTC interrupts.

Submitted by:	bde (including commit message)
MFC after:	1 week
2002-10-17 13:55:39 +00:00
Poul-Henning Kamp
3412120f03 Be consistent about funtions being static.
Spotte by:	FlexeLint.
2002-10-16 10:16:17 +00:00
Poul-Henning Kamp
3bd6561289 NB: This commit does *NOT* make GEOM the default in FreeBSD
NB: But it will enable it in all kernels not having options "NO_GEOM"

Put the GEOM related options into the intended order.

Add "options NO_GEOM" to all kernel configs apart from NOTES.

In some order of controlled fashion, the NO_GEOM options will be
removed, architecture by architecture in the coming days.

There are currently three known issues which may force people to
need the NO_GEOM option:

boot0cfg/fdisk:
        Tries to update the MBR while it is being used to control
        slices.  GEOM does not allow this as a direct operation.

SCSI floppy drives:
        Appearantly the scsi-da driver return "EBUSY" if no media
        is inserted.  This is wrong, it should return ENXIO.

PC98:
        It is unclear if GEOM correctly recognizes all variants of
        PC98 disklabels.  (Help Wanted!  I have neither docs nor HW)

These issues are all being worked.

Sponsored by:	DARPA & NAI Labs.
2002-10-05 16:35:33 +00:00
Matthew N. Dodd
bafe85a4ad Remove duplicate make_dev() calls. 2002-10-04 08:33:10 +00:00
Matthew N. Dodd
3ae5b53264 newbus & bus_space the mcd(4) driver. 2002-10-04 07:14:19 +00:00
Scott Long
0910374b7f Alas, poor matcd, I knew ye well.
It doesn't work.
It cannot be made to work.
Goodbye.

X-MFC after:	ASAP
2002-10-04 06:06:04 +00:00
Matthew N. Dodd
efe66a4be9 Minor style(9) changes. 2002-10-04 02:21:26 +00:00
Matthew N. Dodd
4c7a1919f6 Remove duplicate calls to make_dev(). 2002-10-04 01:58:55 +00:00
John Baldwin
a1885c44cf Whitespace nit. 2002-10-01 20:05:58 +00:00
Poul-Henning Kamp
150b2bdfb2 If GEOM is in the kernel, take these three out. I have no way of
testing any modifications to them, they shouldn't even bother with
disklabels in the first place and they are just plain obsolete old
hardware which should be axed entirely before 5.0-R IMO.

Sponsored by:	DARPA & NAI Labs.
2002-09-30 13:49:20 +00:00
Poul-Henning Kamp
37c841831f Be consistent about "static" functions: if the function is marked
static in its prototype, mark it static at the definition too.

Inspired by:    FlexeLint warning #512
2002-09-28 17:15:38 +00:00
Alfred Perlstein
4f492bfab5 use __packed. 2002-09-23 18:54:32 +00:00
Poul-Henning Kamp
bc8c3c3e37 Fix a 3 year old oversight: Remove the #ifdef/#endif pair now that there
is nothing between them anymore.

Spotted by:	peter.
2002-09-21 07:59:06 +00:00
Mitsuru IWASAKI
076ef4620b Restore status register A of RTC at resume time.
This should fix the 'too many RTC interrupts and statclock seems
broken after resume' problem.

MFC after:	1 week
2002-09-18 07:34:04 +00:00
Jonathan Mini
30abe507c0 Add kernel support needed for the KSE-aware libpthread:
- Maintain fpu state across signals.
	- Save and restore FPU state properly in ucontext_t's.

Reviewed by:	bde, deischen, julian
Approved by:	-arch
2002-09-16 19:25:59 +00:00
Peter Wemm
f7749f924c Automatically enable CPU_ENABLE_SSE (detect and enable SSE instructions)
if compiling with I686_CPU as a target.  CPU_DISABLE_SSE will prevent
this from happening and will guarantee the code is not compiled in.

I am still not happy with this, but gcc is now generating code that uses
these instructions if you set CPUTYPE to p3/p4 or athlon-4/mp/xp or higher.
2002-09-07 07:02:12 +00:00
Philippe Charnier
93b0017f88 Replace various spelling with FALLTHROUGH which is lint()able 2002-08-25 13:23:09 +00:00
Peter Wemm
8b2624e85c Ok, somebody please shoot me. The asm I wrote for the ranged IPI shootdown
was wrong.  It only ever invalidated one page due to me getting the loop
terminator wrong.  This explains the DISABLE_PG_G effect on SMP.
2002-08-23 21:45:59 +00:00
Robert Watson
82d9ad331a Add additional range checks for copyout targets.
Submitted by:	Silvio Cesare <silvio@qualys.com>
2002-08-09 05:50:32 +00:00
Warner Losh
8b5cc27046 Fix more abuse of __FreeBSD__ to detect version. 2002-07-21 05:34:14 +00:00
Peter Wemm
cd71fd08cc Stop abusing NPCI for code that doesn't even work. Emit a warning. 2002-07-21 05:25:49 +00:00
Bruce Evans
3c9d896571 Quick fix for high resolution kernel profiling on i386's. Use
-finstrument-functions instead of -mprofiler-epilogue.  The former
works essentially the same as the latter but has a higher overhead
(about 22 more bytes per function for passing unused args to the
profiling functions).

Removed all traces of the IDENT Makefile variable, which had been
reduced to just a place for holding profiling's contribution to CFLAGS
(the IDENT that gives the kernel identity was renamed to KERN_IDENT).
2002-07-13 22:28:34 +00:00
Peter Wemm
f1b665c8fe Revive backed out pmap related changes from Feb 2002. The highlights are:
- It actually works this time, honest!
- Fine grained TLB shootdowns for SMP on i386.  IPI's are very expensive,
  so try and optimize things where possible.
- Introduce ranged shootdowns that can be done as a single IPI.
- PG_G support for i386
- Specific-cpu targeted shootdowns.  For example, there is no sense in
  globally purging the TLB cache for where we are stealing a page from
  the local unshared process on the local cpu.  Use pm_active to track
  this.
- Add some instrumentation for the tlb shootdown code.
- Rip out SMP code from <machine/cpufunc.h>
- Try and fix some very bogus PG_G and PG_PS interactions that were bad
  enough to cause vm86 bios calls to break.  vm86 depended on our existing
  bugs and this was the cause of the VESA panics last time.
- Fix the silly one-line error that caused the 'panic: bad pte' last time.
- Fix a couple of other silly one-line errors that should have caused more
  pain than they did.

Some more work is needed:
- pmap_{zero,copy}_page[_idle].  These can be done without IPI's if we
  have a hook in cpu_switch.
- The IPI handlers need some cleanup.  I have a bogus %ds load that can
  be avoided.
- APTD handling is rather bogus and appears to be a large source of
  global TLB IPI shootdowns for no really good reason.

I see speedups of between 1.5% and ~4% on buildworlds in a while 1 loop.
I expect to see a bigger difference when there is significant pageout
activity or the system otherwise has memory shortages.

I have backed out a few optimizations that I had been using over the last
few days in order to be a little more conservative.  I'll revisit these
again over the next few days as the dust settles.

New option:  DISABLE_PG_G - In case I missed something.
2002-07-12 07:56:11 +00:00
Peter Wemm
da035a22eb Bah, move the invltlb counter to C code and hook a debug sysctl onto it. 2002-07-11 08:31:10 +00:00
Peter Wemm
dedf64505a s/NCPU/MAXCPU/ to try and get this to compile. 2002-07-11 08:24:33 +00:00
Julian Elischer
d50fe601d4 This file has been included en-mass into i386/i386/exception.s 2002-07-10 21:07:47 +00:00
Mike Barcroft
a6519e64cc Move the type definition of ointhand2_t from i386/include/types.h to
i386/isa/isa_device.h.  This is a more appropriate location and
helps restrict <machine/types.h> to only types that exist on all
platforms.
2002-07-09 01:16:18 +00:00
Peter Wemm
9ecb46bf87 The clock is already allocated as 'fast' - no need to try and intercept a
'slow' interrupt registration and convert it into 'fast'.
2002-07-08 09:12:22 +00:00
Peter Wemm
160554fbf4 Remove a couple of __P() stragglers. 2002-06-29 02:32:34 +00:00
Mark Peek
5e3939b59b Clock frequencies reported by sysctl should be unsigned values. Discovered
when machdep.tsc_freq returned a negative number on a 2.2GHz Xeon.

Submitted by:	Brian Harrison <bharrison@ironport.com>
Reviewed by:	phk
MFC after:	1 week
2002-06-22 16:30:18 +00:00
Jens Schweikhardt
21dc7d4f57 Fix typo in the BSD copyright: s/withough/without/
Spotted and suggested by:	des
MFC after:	3 weeks
2002-06-02 20:05:59 +00:00
Robert Watson
6be2f8829a Off-by-128 error in the cuam* device node numbers. 2002-05-20 05:12:56 +00:00
Robert Watson
12f2edc7d5 Bump the rc driver a little bit closer to the 21st century: use
make_dev() to create device nodes for each of the serial port channels
(ttym%d and cuam%d respectively, as borrowed from MAKEDEV).  This allows
the rc driver to work in 5.0.  I've tested it with only one card, but
will try sticking in a second card tomorrow and see what happens.
2002-05-20 05:04:41 +00:00
Poul-Henning Kamp
22bd43ccda Move a few ancient minor-number definitions for tapedrives to the
only driver which uses them.  Remove the rest.
2002-05-14 06:57:02 +00:00
Bruce Evans
f318190a01 Fixed checking for VM86 mode in doreti which I broke in rev.1.30. Only
the case of VM86 calls from the kernel was broken, so this bug was not
a security hole.

PR:		36710
Submitted by:	David Xu <davidx@viasoft.com.cn> (version for RELENG_4)
MFC after:	3 days
2002-05-05 03:19:48 +00:00
Poul-Henning Kamp
2266fe776e Don't export timecounter structures under debug. with sysctl, they
contain no truly interesting data anymore.
2002-04-30 19:34:31 +00:00
Peter Wemm
db17c6fc07 Tidy up some loose ends.
i386/ia64/alpha - catch up to sparc64/ppc:
- replace pmap_kernel() with refs to kernel_pmap
- change kernel_pmap pointer to (&kernel_pmap_store)
  (this is a speedup since ld can set these at compile/link time)
all platforms (as suggested by jake):
- gc unused pmap_reference
- gc unused pmap_destroy
- gc unused struct pmap.pm_count
(we never used pm_count - we track address space sharing at the vmspace)
2002-04-29 07:43:16 +00:00
Poul-Henning Kamp
7e2d76ff05 Remove the tc_update() function. Any frequency change to the
timecounter will be used starting at the next second, which is
good enough for sysctl purposes.  If better adjustment is needed
the NTP PLL should be used.
2002-04-26 10:06:26 +00:00
Poul-Henning Kamp
2ce7d7a033 GC various bits and pieces of USERCONFIG from all over the place. 2002-04-09 11:18:46 +00:00
Yoshihiro Takahashi
181593adec Move ICU_* defines into icu.h. 2002-04-06 08:25:05 +00:00
John Baldwin
6008862bc2 Change callers of mtx_init() to pass in an appropriate lock type name. In
most cases NULL is passed, but in some cases such as network driver locks
(which use the MTX_NETWORK_LOCK macro) and UMA zone locks, a name is used.

Tested on:	i386, alpha, sparc64
2002-04-04 21:03:38 +00:00
Poul-Henning Kamp
408ab1b875 Retire the bogus ioctl DIOCGPART in toto.
Once again we can notice that badly thought out hacks ferment and infect
far more code than initially expected.

Sponsored by:	DARPA and NAI Labs.
2002-04-02 11:52:13 +00:00
Matthew Dillon
182da8209d Stage-2 commit of the critical*() code. This re-inlines cpu_critical_enter()
and cpu_critical_exit() and moves associated critical prototypes into their
own header file, <arch>/<arch>/critical.h, which is only included by the
three MI source files that need it.

Backout and re-apply improperly comitted syntactical cleanups made to files
that were still under active development.  Backout improperly comitted program
structure changes that moved localized declarations to the top of two
procedures.  Partially re-apply one of the program structure changes to
move 'mask' into an intermediate block rather then in three separate
sub-blocks to make the code more readable.  Re-integrate bug fixes that Jake
made to the sparc64 code.

Note: In general, developers should not gratuitously move declarations out
of sub-blocks.  They are where they are for reasons of structure, grouping,
readability, compiler-localizability, and to avoid developer-introduced bugs
similar to several found in recent years in the VFS and VM code.

Reviewed by:	jake
2002-04-01 23:51:23 +00:00
John Baldwin
44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
Jake Burkholder
d0ce9a7e07 Remove abuse of intr_disable/restore in MI code by moving the loop in ast()
back into the calling MD code.  The MD code must ensure no races between
checking the astpening flag and returning to usermode.

Submitted by:	peter (ia64 bits)
Tested on:	alpha (peter, jeff), i386, ia64 (peter), sparc64
2002-03-29 16:35:26 +00:00
Matthew Dillon
93e70a5f37 Tab-out the backslashes in icu_vector.s to make it more readable and to
match it up with apic_vector.s.
2002-03-27 05:43:11 +00:00
Matthew Dillon
d74ac6819b Compromise for critical*()/cpu_critical*() recommit. Cleanup the interrupt
disablement assumptions in kern_fork.c by adding another API call,
cpu_critical_fork_exit().  Cleanup the td_savecrit field by moving it
from MI to MD.  Temporarily move cpu_critical*() from <arch>/include/cpufunc.h
to <arch>/<arch>/critical.c (stage-2 will clean this up).

Implement interrupt deferral for i386 that allows interrupts to remain
enabled inside critical sections.  This also fixes an IPI interlock bug,
and requires uses of icu_lock to be enclosed in a true interrupt disablement.

This is the stage-1 commit.  Stage-2 will occur after stage-1 has stabilized,
and will move cpu_critical*() into its own header file(s) + other things.
This commit may break non-i386 architectures in trivial ways.  This should
be temporary.

Reviewed by:	core
Approved by:	core
2002-03-27 05:39:23 +00:00
Nicolas Souchu
ea4122d2bf Fix bktr and pcf compilation with LINT 2002-03-25 21:22:35 +00:00
Will Andrews
05f920205e Minor changes:
[1] Support the Sony VAIO Jogdial in moused(8).
 [2] Modify spic(4) to support additional Sony VAIO models.

Submitted by:	[1] Juriy Goloveshkin <j@gu.ru>,
		[2] Akira Funahashi <funa@funa.org>
Tested by:	cjh, jim, Jerry A! <jerry@thehutt.org>
Approved by:	nsayer
MFC after:	2 weeks
2002-03-24 03:07:07 +00:00
Bruce Evans
ea1499bf8f Fixed some style bugs in the removal of __P(()). The main ones were
not removing tabs before "__P((", and not outdenting continuation lines
to preserve non-KNF lining up of code with parentheses.  Switch to KNF
formatting and/or rewrap the whole prototype in some cases.
2002-03-23 16:01:49 +00:00
Warner Losh
ba74981e71 Fix abuses of cpu_critical_{enter,exit} by converting to
intr_{disable,restore} as well as providing an implemenation of
intr_{disable,restore}.

Reviewed by: jake, rwatson, jhb
2002-03-21 06:19:08 +00:00
Alfred Perlstein
89c9a48352 Remove __P. 2002-03-20 07:51:46 +00:00
Alfred Perlstein
85f190e4d1 Fixes to make select/poll mpsafe.
Problem:
  selwakeup required calling pfind which would cause lock order
  reversals with the allproc_lock and the per-process filedesc lock.
Solution:
  Instead of recording the pid of the select()'ing process into the
  selinfo structure, actually record a pointer to the thread.  To
  avoid dereferencing a bad address all the selinfo structures that
  are in use by a thread are kept in a list hung off the thread
  (protected by sellock).  When a selwakeup occurs the selinfo is
  removed from that threads list, it is also removed on the way out
  of select or poll where the thread will traverse its list removing
  all the selinfos from its own list.

Problem:
  Previously the PROC_LOCK was used to provide the mutual exclusion
  needed to ensure proper locking, this couldn't work because there
  was a single condvar used for select and poll and condvars can
  only be used with a single mutex.
Solution:
  Introduce a global mutex 'sellock' which is used to provide mutual
  exclusion when recording events to wait on as well as performing
  notification when an event occurs.

Interesting note:
  schedlock is required to manipulate the per-thread TDF_SELECT
  flag, however if given its own field it would not need schedlock,
  also because TDF_SELECT is only manipulated under sellock one
  doesn't actually use schedlock for syncronization, only to protect
  against corruption.

Proc locks are no longer used in select/poll.

Portions contributed by: davidc
2002-03-14 01:32:30 +00:00
Hellmuth Michaelis
29c063831d make pcvt compile again without "options XSERVER".
PR: 35577
2002-03-08 19:06:46 +00:00
Peter Wemm
4945f5ec47 Fix warning (const lost in assignment), harmless in this case. 2002-02-28 03:13:47 +00:00
John Baldwin
a854ed9893 Simple p_ucred -> td_ucred changes to start using the per-thread ucred
reference.
2002-02-27 18:32:23 +00:00
Peter Wemm
d1693e1701 Back out all the pmap related stuff I've touched over the last few days.
There is some unresolved badness that has been eluding me, particularly
affecting uniprocessor kernels.  Turning off PG_G helped (which is a bad
sign) but didn't solve it entirely.  Userland programs still crashed.
2002-02-27 09:51:33 +00:00
Matthew Dillon
181df8c9d4 revert last commit temporarily due to whining on the lists. 2002-02-26 20:33:41 +00:00
Matthew Dillon
f96ad4c223 STAGE-1 of 3 commit - allow (but do not require) interrupts to remain
enabled in critical sections and streamline critical_enter() and
critical_exit().

This commit allows an architecture to leave interrupts enabled inside
critical sections if it so wishes.  Architectures that do not wish to do
this are not effected by this change.

This commit implements the feature for the I386 architecture and provides
a sysctl, debug.critical_mode, which defaults to 1 (use the feature).  For
now you can turn the sysctl on and off at any time in order to test the
architectural changes or track down bugs.

This commit is just the first stage.  Some areas of the code, specifically
the MACHINE_CRITICAL_ENTER #ifdef'd code, is strictly temporary and will
be cleaned up in the STAGE-2 commit when the critical_*() functions are
moved entirely into MD files.

The following changes have been made:

	* critical_enter() and critical_exit() for I386 now simply increment
	  and decrement curthread->td_critnest.  They no longer disable
	  hard interrupts.  When critical_exit() decrements the counter to
	  0 it effectively calls a routine to deal with whatever interrupts
	  were deferred during the time the code was operating in a critical
	  section.

	  Other architectures are unaffected.

	* fork_exit() has been conditionalized to remove MD assumptions for
	  the new code.  Old code will still use the old MD assumptions
	  in regards to hard interrupt disablement.  In STAGE-2 this will
	  be turned into a subroutine call into MD code rather then hardcoded
	  in MI code.

	  The new code places the burden of entering the critical section
	  in the trampoline code where it belongs.

	* I386: interrupts are now enabled while we are in a critical section.
	  The interrupt vector code has been adjusted to deal with the fact.
	  If it detects that we are in a critical section it currently defers
	  the interrupt by adding the appropriate bit to an interrupt mask.

	* In order to accomplish the deferral, icu_lock is required.  This
	  is i386-specific.  Thus icu_lock can only be obtained by mainline
	  i386 code while interrupts are hard disabled.  This change has been
	  made.

	* Because interrupts may or may not be hard disabled during a
	  context switch, cpu_switch() can no longer simply assume that
	  PSL_I will be in a consistent state.  Therefore, it now saves and
	  restores eflags.

	* FAST INTERRUPT PROVISION.  Fast interrupts are currently deferred.
	  The intention is to eventually allow them to operate either while
	  we are in a critical section or, if we are able to restrict the
	  use of sched_lock, while we are not holding the sched_lock.

	* ICU and APIC vector assembly for I386 cleaned up.  The ICU code
	  has been cleaned up to match the APIC code in regards to format
	  and macro availability.  Additionally, the code has been adjusted
	  to deal with deferred interrupts.

	* Deferred interrupts use a per-cpu boolean int_pending, and
	  masks ipending, spending, and fpending.  Being per-cpu variables
	  it is not currently necessary to lock; bus cycles modifying them.

	  Note that the same mechanism will enable preemption to be
	  incorporated as a true software interrupt without having to
	  further hack up the critical nesting code.

	* Note: the old critical_enter() code in kern/kern_switch.c is
	  currently #ifdef to be compatible with both the old and new
	  methodology.  In STAGE-2 it will be moved entirely to MD code.

Performance issues:

	One of the purposes of this commit is to enhance critical section
	performance, specifically to greatly reduce bus overhead to allow
	the critical section code to be used to protect per-cpu caches.
	These caches, such as Jeff's slab allocator work, can potentially
	operate very quickly making the effective savings of the new
	critical section code's performance very significant.

	The second purpose of this commit is to allow architectures to
	enable certain interrupts while in a critical section.  Specifically,
	the intention is to eventually allow certain FAST interrupts to
	operate rather then defer.

	The third purpose of this commit is to begin to clean up the
	critical_enter()/critical_exit()/cpu_critical_enter()/
	cpu_critical_exit() API which currently has serious cross pollution
	in MI code (in fork_exit() and ast() for example).

	The fourth purpose of this commit is to provide a framework that
	allows kernel-preempting software interrupts to be implemented
	cleanly.  This is currently used for two forward interrupts in I386.
	Other architectures will have the choice of using this infrastructure
	or building the functionality directly into critical_enter()/
	critical_exit().

	Finally, this commit is designed to greatly improve the flexibility
	of various architectures to manage critical section handling,
	software interrupts, preemption, and other highly integrated
	architecture-specific details.
2002-02-26 17:06:21 +00:00
Bruce Evans
fbd7573929 Initialize a variable bogusly to avoid a gcc bug that causes a spurious
warning.
2002-02-26 17:04:29 +00:00
Peter Wemm
6bd95d70db Work-in-progress commit syncing up pmap cleanups that I have been working
on for a while:
- fine grained TLB shootdown for SMP on i386
- ranged TLB shootdowns.. eg: specify a range of pages to shoot down with
  a single IPI, since the IPI is very expensive.  Adjust some callers
  that used to trigger this inside tight loops to do a ranged shootdown
  at the end instead.
- PG_G support for SMP on i386 (options ENABLE_PG_G)
- defer PG_G activation till after we decide what we are going to do with
  PSE and the 4MB pages at the start of the kernel.  This should solve
  some rumored strangeness about stale PG_G entries getting stuck
  underneath the 4MB pages.
- add some instrumentation for the fine TLB shootdown
- convert some asm instruction wrappers from functions to inlines.  gcc
  seems to do a fair bit better with this.
- [temporarily!] pessimize the tlb shootdown IPI handlers.  I will fix
  this again shortly.

This has been working fairly well for me for a while, but I have tweaked
it again prior to commit since my last major testing round.  The only
outstanding problem that I know of is PG_G related, which is why there
is an option for it (not on by default for SMP).  I have seen a world
speedups by a few percent (as much as 4 or 5% in one case) but I have
*not* accurately measured this - I am a bit sceptical of these numbers.
2002-02-25 23:49:51 +00:00
Seigo Tanimura
f591779bb5 Lock struct pgrp, session and sigio.
New locks are:

- pgrpsess_lock which locks the whole pgrps and sessions,
- pg_mtx which protects the pgrp members, and
- s_mtx which protects the session members.

Please refer to sys/proc.h for the coverage of these locks.

Changes on the pgrp/session interface:

- pgfind() needs the pgrpsess_lock held.

- The caller of enterpgrp() is responsible to allocate a new pgrp and
  session.

- Call enterthispgrp() in order to enter an existing pgrp.

- pgsignal() requires a pgrp lock held.

Reviewed by:	jhb, alfred
Tested on:	cvsup.jp.FreeBSD.org
		(which is a quad-CPU machine running -current)
2002-02-23 11:12:57 +00:00
Yoshihiro Takahashi
9d139b79d4 - Split the routine to initialize a bus_space_handle into the separate
function.
- Only access a bus_space_handle if the resource type is SYS_RES_MEMORY or
  SYS_RES_IOPORT.
- Add the bus_space_subregion supports.
2002-02-17 09:16:45 +00:00
Yoshihiro Takahashi
65939fef0f Add needed include. 2002-02-10 10:16:22 +00:00
John Baldwin
2deac418f3 Don't grab the ICU lock while reading the current pending interrupts and
current masked interrupts from the AT PIC.

Requested by:	bde
2002-02-08 18:30:36 +00:00
Bruce Evans
586079cc26 Don't include <isa/isavar.h> or compile code depending on it when isa
is not configured.  Including <isa/isavar.h> when it is not used is
harmful as well as bogus, since it includes "isa_if.h" which is not
generated when isa is not configured.

This was fixed in 1999 but was broken by unconditionalizing PNPBIOS.
2002-01-30 12:41:12 +00:00
Bruce Evans
c636c4a872 Removed unused includes. In particular, don't include <isa/isavar.h> since
its only effect is to break the optionality of the isa option.

Sorted includes.
2002-01-30 12:23:49 +00:00
Joerg Wunsch
87fa2d16c3 Unbreak pcvt, it suffered from common variables. Whoever added the
-fno-common could not have possibly compiled LINT afterwards with
this...
2002-01-27 09:17:27 +00:00