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Commit Graph

1100 Commits

Author SHA1 Message Date
Matt Jacob
78f3dc6530 Pick up kernelname for bootinfo structure (if possible), otherwise
from environment.
2000-11-14 08:12:15 +00:00
Andrew Gallatin
922683e01a Enable linux thread support on the alpha. The guts of linux_clone was
mainly cut-n-pasted from the i386 port, except for the method of setting
the child's stack which is the only MD part of this function.

I've tested with the example apps shipped with the linux threads source
code (ex1-ex6) and with several binary builds of Mozilla.
2000-11-10 23:04:31 +00:00
Andrew Gallatin
f16647740e Simplify and correct OSF/1 signal handling.
- No signal translation is needed.  Our signals match the OSF/1 signals
- an OSF/1 sigset_t is 64 bits.  Make certain to use all 64-bits of it.
  We'd previously only used the lower 32 bits.   This was mostly harmless
  as I don't know of an OSF/1 apps which use any signals > 31.  However,
  the alpha Linux ABI uses the osf/1 signal routines and threaded linux
  apps tyically use signals 32 and 33 to comminicate with the manager
  thread, so it is important we preserve the upper 32-bits.

Reviewed by: marcel (at least in principal)
2000-11-10 23:00:54 +00:00
Matt Jacob
259515a1ec Fix typo in END macro (END'ed enable twice)
PR:		22713
Submitted by:	Bernd Walter <ticso@cicely5.cicely.de>
2000-11-09 17:01:21 +00:00
Marcel Moolenaar
806d7daafe Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
Andrew Gallatin
3598c2665c back out 1.66 -- the Elfxx_Brandinfo compat_3_brand field doesn't exist
in -current
2000-11-09 01:53:05 +00:00
Matt Jacob
328b7df026 Clean this is up a bit for multiple MIDs... We can figure out which MID
for an interrupt to enable/disable from the vector (and GID too, if we
had multiple GIDs)- so, stupidly for now, search for the right mcpcia's
softc so we have the right base address for the bridge CSR to apply
IRQ bit-twiddle's to. Alas- this doesn't yet allow us to run, but it's
the right direction.
2000-11-08 18:48:21 +00:00
Jeroen Ruigrok van der Werven
6b1d8ceabe Fix CMSG and ALIGN macro usage.
Previously we had to include <machine/param.h> or <sys/param.h> bogusly
due to the fact that <sys/socket.h> CMSG macros needed the ALIGN macro,
which was defined in param.h.  However, including param.h was a disaster
for namespace pollution.
This solution, as contributed by shin a while ago, fixes it elegantly
by wrapping the definitions around some namespace pollution preventer
definitions.
This patch was long overdue.
This should allow any network programmer to use <sys/socket.h> as
before.

PR:		19971, 20530
Submitted by:	Martin Kaeske <MartinKaeske@lausitz.net>
		Mark Andrews <Mark.Andrews@nominum.com>
Patch submitted by:	shin
Reviewed by:	bde
2000-11-08 16:59:25 +00:00
Matt Jacob
2ac2ed8a51 (KTR debugging) Say when we're disabling a vector. 2000-11-07 22:29:21 +00:00
David E. O'Brien
a5b64787e2 Sync with i386's GENERIC rev 1.287 (Minor ordering changes to make more
sections strictly alphabetical.)
2000-11-07 22:09:33 +00:00
David E. O'Brien
9d9615d81d Sync with i386/conf/GENERIC rev 1.288 (add comments for some ISA devices). 2000-11-07 22:07:07 +00:00
Bill Paul
f425f328cd The vx driver no longer needs the PCI compat shims. Also should now
work on the alpha (at least the PCI part should).
2000-11-07 00:58:35 +00:00
David E. O'Brien
66e7b133fe Fix generated include path.
Approved by:	JKH
2000-11-04 07:21:37 +00:00
David E. O'Brien
43cc92233d Fix the Elf64 branding initialization. 2000-11-04 05:04:47 +00:00
David E. O'Brien
896fc61a66 Sort. 2000-11-02 04:13:51 +00:00
Andrew Gallatin
f11610e091 Support for the linux ipc syscalls on the alpha, where each one has
its own syscall rather than going through a demux function like
linux_ipc() on i386
2000-11-01 23:17:31 +00:00
Andrew Gallatin
d0ce99c874 use DUMMY macro and support from linux_util.h 2000-11-01 23:13:49 +00:00
Andrew Gallatin
b36abb04e5 Move the linux abi's alpha md files over to using David's build-time
syscall generation method
2000-11-01 23:07:25 +00:00
Andrew Gallatin
e70ce4d9c5 fix linux_termio and linux_termios structs on alpha. alpha differences
are in the termios struct (probably because linux wants to be compatible
with the osf/1 termios struct), not the termio struct.
2000-11-01 22:36:41 +00:00
John Baldwin
a07b7a4e35 Pass in the new-bus flags to alpha_setup_intr(). 2000-11-01 18:40:42 +00:00
John Baldwin
90652ed180 - Modify alpha_setup_intr() to take interrupt handler flags as an additional
argument.  These flags include INTR_FAST, INTR_MPSAFE, etc.
- Properly handle INTR_EXCL when it is passed in to allow an interrupt
  handler to claim exclusive ownership of an interrupt thread.
- Add support for psuedo-fast interrupts on the alpha.  For fast interrupts,
  we don't allocate an interrupt thread; instead, during dispatching of an
  interrupt, we run the handler directly instead of scheduling the thread
  to run.  Note that the handler is currently run without Giant and must be
  MP safe.  The only fast handler currently is for the sio driver.

Requested by:	dfr
2000-11-01 18:40:02 +00:00
David E. O'Brien
ac4c54948c Apply style(9). 2000-11-01 16:38:40 +00:00
David E. O'Brien
7b4cc3fd44 Minimal set of diffs from the i386 bits to the AlphaLinux.
(based on a patch to sys/i386/linux/linux_dummy.c by gallatin)
2000-11-01 16:34:16 +00:00
David E. O'Brien
23d3a6fe6e Need to dummy-out rt_sigreturn.
submitted by:	gallatin
2000-11-01 08:52:24 +00:00
David E. O'Brien
60f618a04d Need to include sys/proc.h. 2000-11-01 08:49:48 +00:00
David E. O'Brien
727fba5373 I don't know why this used to compile for me, but now struct
linux_sigcontext seems to have changed and some members are gone.
2000-11-01 08:48:53 +00:00
David E. O'Brien
83d2913008 Make the target a little bit more generic. 2000-11-01 08:47:34 +00:00
Matt Jacob
2170c2d960 Remember to decrement interrupt nesting level if leaving early
(in the unlikely case we get a clock interrupt on a non-primary CPU).
2000-10-30 04:18:54 +00:00
Andrew Gallatin
a415ada785 remove a stddef.h missed by phk 2000-10-27 18:57:31 +00:00
Matt Jacob
657e6b0d78 Add M_ZERO to malloc calls where the result is just bzeroed.
PR:		22188
Submitted (partially) by:	josh@zipperup.org
2000-10-27 16:36:26 +00:00
Poul-Henning Kamp
46aa3347cb Convert all users of fldoff() to offsetof(). fldoff() is bad
because it only takes a struct tag which makes it impossible to
use unions, typedefs etc.

Define __offsetof() in <machine/ansi.h>

Define offsetof() in terms of __offsetof() in <stddef.h> and <sys/types.h>

Remove myriad of local offsetof() definitions.

Remove includes of <stddef.h> in kernel code.

NB: Kernelcode should *never* include from /usr/include !

Make <sys/queue.h> include <machine/ansi.h> to avoid polluting the API.

Deprecate <struct.h> with a warning.  The warning turns into an error on
01-12-2000 and the file gets removed entirely on 01-01-2001.

Paritials reviews by:   various.
Significant brucifications by:  bde
2000-10-27 11:45:49 +00:00
Roger Hardiman
5d4152e3e8 Merge from i386: Add MSP ioctl 2000-10-27 07:07:24 +00:00
Mark Murray
5f3431b5ad As the blocking model has seems to be troublesome for many, disable
it for now with an option.

This option is already deprecated, and will be removed when the
entropy-harvesting code is fast enough to warrant it.
2000-10-27 06:06:04 +00:00
Andrew Gallatin
382e2ab4b1 add a version tag for the alpha linulator to depend on 2000-10-26 16:31:29 +00:00
Andrew Gallatin
af06b8d8a5 Update osf1_setuid() and osf1_setgid() to use the new change_euid() and
change_ruid() in kern_prot.c.  This fixes an incorrect use
of chgproccnt().

Update both osf1_setuid() and osf1_setgid() to use setsugid() instead
of just frobbing the flag.

(mostly) submitted by: truckman
2000-10-26 15:53:00 +00:00
John Baldwin
8088699f79 - Overhaul the software interrupt code to use interrupt threads for each
type of software interrupt.  Roughly, what used to be a bit in spending
  now maps to a swi thread.  Each thread can have multiple handlers, just
  like a hardware interrupt thread.
- Instead of using a bitmask of pending interrupts, we schedule the specific
  software interrupt thread to run, so spending, NSWI, and the shandlers
  array are no longer needed.  We can now have an arbitrary number of
  software interrupt threads.  When you register a software interrupt
  thread via sinthand_add(), you get back a struct intrhand that you pass
  to sched_swi() when you wish to schedule your swi thread to run.
- Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit
  more intuitive.  Also, prefix all the members of struct intrhand with
  'ih_'.
- Make swi_net() a MI function since there is now no point in it being
  MD.

Submitted by:	cp
2000-10-25 05:19:40 +00:00
Andrew Gallatin
2acbb2b129 fix bogus cast in osf1_getrlimit/osf1_setrlimit 2000-10-25 00:37:34 +00:00
John Baldwin
2a1c4d6378 Only use 1 set of memory barrier operations with the atomic_*_{acq,rel}_ptr
functions.
2000-10-25 00:15:21 +00:00
Andrew Gallatin
785640153d teach the osf1_getsysinfo() function about a few more fields
submitted by: Jim.Pirzyk@disney.com
PR: alpha/22263
2000-10-25 00:14:11 +00:00
David E. O'Brien
2d26708326 Adjust comments
Submitted by:	bde

Add ISO C99's long long type limits.
Reviewed by:	bde
2000-10-24 10:49:56 +00:00
Matt Jacob
eb661345a9 Move bogus proc reference stuff into <machine/globals.h>. There is no
more include file including <sys/proc.h>, but there still is this wonky
and (causes warnings on i386) reference in globals.h.

CURTHD is now defined in <machine/globals.h> as well. The correct thing
to do is provide a platform function for this.
2000-10-23 18:36:03 +00:00
David E. O'Brien
45428438f7 Apply style(9). [best I could] 2000-10-23 08:46:25 +00:00
David E. O'Brien
e413f7bf97 Apply style(9).
(best I could)
2000-10-23 08:36:59 +00:00
David E. O'Brien
30e3f60f75 Sort the #define's. 2000-10-23 08:29:04 +00:00
David E. O'Brien
683713f8e9 Minimal set of diffs from the i386 bits to the AlphaLinux. 2000-10-23 08:15:58 +00:00
David E. O'Brien
d1121275d5 Re-order the #define's into a more logical one. 2000-10-23 08:13:19 +00:00
David E. O'Brien
2159c8905f We need to explicitly tell the args struct for COMPAT functions we use
that use the same args struct as their non-COMPAT counter parts.
2000-10-23 02:20:01 +00:00
David E. O'Brien
b608e3ff66 Somehow I left out sycall #98 2000-10-22 21:47:07 +00:00
David E. O'Brien
dd3ccfd92e Minor whitespace cleanup. 2000-10-22 21:42:03 +00:00
David E. O'Brien
8c2c12607a Minimal set of diffs from the i386 bits to the AlphaLinux.
Submitted by:	gallatin (content, minimization by me)
2000-10-22 21:36:27 +00:00
John Baldwin
bd4635599d Define the mtx_legal2block() macro used in the witness code that managed
to get lost during the MI mutex conversion.

Reported by:    Steve Kargl <sgk@troutmask.apl.washington.edu>
2000-10-20 22:44:06 +00:00
John Baldwin
9aea17a792 Fix a braino in the ASS_SIEN() macro in the MUTEX_DEBUG case by using
mtx_saveintr instead of saveintr.
2000-10-20 20:27:12 +00:00
John Baldwin
8a6149a3a3 Don't bother setting the saved IPL in the sched_lock mutex as it doesn't
really do anything since the first mtx_enter() will overwrite the value
saved here.
2000-10-20 20:14:55 +00:00
John Baldwin
8cc99fae9a Catch up to some of the changes to _getlock_spin_block. Specifically,
use _obtain_lock() instead of a manual atomic_cmpset_ptr.
2000-10-20 19:54:47 +00:00
John Baldwin
bb352e20a2 Grrrr. Fix the order of the #define's so atomic_cmpset_{acq,rel}_long
are defined before atomic_cmpset_{acq,rel}_ptr tries to call them.
2000-10-20 19:53:52 +00:00
John Baldwin
6d02703c2f Fix the atomic_cmpset_{acq,rel}_ptr() functions to do proper type-casting. 2000-10-20 19:46:02 +00:00
John Baldwin
35e0e5b311 Catch up to moving headers:
- machine/ipl.h -> sys/ipl.h
- machine/mutex.h -> sys/mutex.h
2000-10-20 07:58:15 +00:00
John Baldwin
bce7f05af8 - machine/mutex.h -> sys/mutex.h
- Catch up to the MI mutex structure due to saveflags,saveipl,savepsr
  becoming saveintr.
2000-10-20 07:38:44 +00:00
John Baldwin
557b927eca - machine/mutex.h -> sys/mutex.h
- Use MUTEX_DECLARE() and MTX_COLD for Giant and sched_lock.
2000-10-20 07:32:48 +00:00
John Baldwin
36412d79b4 - Make the mutex code almost completely machine independent. This greatly
reducues the maintenance load for the mutex code.  The only MD portions
  of the mutex code are in machine/mutex.h now, which include the assembly
  macros for handling mutexes as well as optionally overriding the mutex
  micro-operations.  For example, we use optimized micro-ops on the x86
  platform #ifndef I386_CPU.
- Change the behavior of the SMP_DEBUG kernel option.  In the new code,
  mtx_assert() only depends on INVARIANTS, allowing other kernel developers
  to have working mutex assertiions without having to include all of the
  mutex debugging code.  The SMP_DEBUG kernel option has been renamed to
  MUTEX_DEBUG and now just controls extra mutex debugging code.
- Abolish the ugly mtx_f hack.  Instead, we dynamically allocate
  seperate mtx_debug structures on the fly in mtx_init, except for mutexes
  that are initiated very early in the boot process.   These mutexes
  are declared using a special MUTEX_DECLARE() macro, and use a new
  flag MTX_COLD when calling mtx_init.  This is still somewhat hackish,
  but it is less evil than the mtx_f filler struct, and the mtx struct is
  now the same size with and without mutex debugging code.
- Add some micro-micro-operation macros for doing the actual atomic
  operations on the mutex mtx_lock field to make it easier for other archs
  to override/optimize mutex ops if needed.  These new tiny ops also clean
  up the code in some places by replacing long atomic operation function
  calls that spanned 2-3 lines with a short 1-line macro call.
- Don't call mi_switch() from mtx_enter_hard() when we block while trying
  to obtain a sleep mutex.  Calling mi_switch() would bogusly release
  Giant before switching to the next process.  Instead, inline most of the
  code from mi_switch() in the mtx_enter_hard() function.  Note that when
  we finally kill Giant we can back this out and go back to calling
  mi_switch().
2000-10-20 07:26:37 +00:00
John Baldwin
ccbdd9ee59 - Expand the set of atomic operations to optionally include memory barriers
in most of the atomic operations.  Now for these operations, you can
  use the normal atomic operation, you can use the operation with a read
  barrier, or you can use the operation with a write barrier.  The function
  names follow the same semantics used in the ia64 instruction set.  An
  atomic operation with a read barrier has the extra suffix 'acq', due to
  it having "acquire" semantics.  An atomic operation with a write barrier
  has the extra suffix 'rel'.  These suffixes are inserted between the
  name of the operation to perform and the typename.  For example, the
  atomic_add_int() function now has 3 variants:
  - atomic_add_int() - this is the same as the previous function
  - atomic_add_acq_int() - this function combines the add operation with a
    read memory barrier
  - atomic_add_rel_int() - this function combines the add operation with a
    write memory barrier
- Add 'ptr' to the list of types that we can perform atomic operations
  on.  This allows one to do atomic operations on uintptr_t's.  This is
  useful in the mutex code, for example, because the actual mutex lock is
  a pointer.
- Add two new operations for doing loads and stores with memory barriers.
  The new load operations use a read barrier before the load, and the
  new store operations use a write barrier after the load.  For example,
  atomic_load_acq_int() will atomically load an integer as well as
  enforcing a read barrier.
2000-10-20 07:00:48 +00:00
John Baldwin
3f4809dd0d Axe the barrier_{read,write,rw}() helper functions as this method of
doing memory barriers doesn't really scale well for the ia64.  Also,
memory barriers are more a property of the CPU than bus space.

Requested by:	dfr
2000-10-20 06:45:48 +00:00
John Baldwin
25f3f7c530 Add in a simple API for memory barriers to machine/bus.h:
- barrier_read() enforces a memory read barrier
- barrier_write() enforces a memory write barrier
- barrier_rw() enforces a memory read/write barrier
2000-10-18 10:30:12 +00:00
Paul Saab
c794ceb56a Implement write combining for crashdumps. This is useful when
write caching is disabled on both SCSI and IDE disks where large
memory dumps could take up to an hour to complete.

Taking an i386 scsi based system with 512MB of ram and timing (in
seconds) how long it took to complete a dump, the following results
were obtained:

Before:				After:
	WCE           TIME		WCE           TIME
	------------------		------------------
	1	141.820972		1	 15.600111
	0	797.265072		0	 65.480465

Obtained from:	Yahoo!
Reviewed by:	peter
2000-10-17 10:05:49 +00:00
Andrew Gallatin
7936339495 A start at an implemention of linux_rt_sendsig & linux_rt_sigreturn
and associated user-level signal trampoline glue.

Without this patch, an SA_SIGINFO style handler can be installed by a linux
app, but if the handler accesses its sip argument, it will get a garbage
pointer and likely segfault.

We currently supply a valid pointer, but its contents are mainly
garbage.  Filling this in properly is future work.

This is the second of 3 commits that will get IBM's JDK 1.3 working with
FreeBSD ...
2000-10-17 00:00:20 +00:00
Andrew Gallatin
1e78526274 Fix problems booting large kernels on alphas. The symptom is that the kernel
loads, prints the copyright, and either hangs or locks solid.  The
PC tends to be in the data segment and the RA is in XentMM

Doug really came up with the fix, I'm just the monkey typing.  Doug says:
	The alpha can only support 64k of globals with $gp pointing at
	base+32k so that the code can use 16bit signed offsets from $gp to
	access it. ....  it is possible to have multiple .got subsections
	and the linker handles this with the relocations for 'ldgp' pseudo
	instructions.  [Without this patch] the code in exception.s has been
	linked  to use a different gp from locore.s (where pal_kgp is set).

Reviewed by: dfr
2000-10-16 20:15:43 +00:00
Poul-Henning Kamp
398bc678aa Move DELAY() from <machine/clock.h> to <sys/systm.h> 2000-10-15 09:51:49 +00:00
Bill Fumerola
80e3ea2097 Remove 'device tx'. In wilko's testing it traps on bringing the interface
up. Even though this has recieved all the right MI treatment (newbus, miibus)
it stands for now a i386 only driver.
2000-10-12 06:10:12 +00:00
Andrew Gallatin
9e7c752771 kmem transfers were being double-counted due to a missing continue.
This silences the dreaded "swapinfo:cannot read blmeta_t" messages at boot.
I'm really suprised there were no PRs open about this...
2000-10-11 01:01:54 +00:00
Andrew Gallatin
acadb17f53 kernacc() only knows about mapped memory, not K0SEG addresses.
Before calling kernacc(), make sure that we're not calling it
with a K0SEG address.

This gets alphas booting with SMP_DEBUG & INVARIANTS options

approved by: jhb
2000-10-09 18:47:49 +00:00
Andrew Gallatin
c199657754 fix a typo & allow softclock to run on alphas.
This gets my AS500 and UP1000 booting again.
2000-10-09 14:20:09 +00:00
Poul-Henning Kamp
f6b5c74c35 Initiate deorbit burn sequence for <machine/mouse.h>.
Replace all in-tree uses with <sys/mouse.h> which repo-copied a few
moments ago from src/sys/i386/include/mouse.h by peter.
This is also the appropriate fix for exo-tree sources.

Put warnings in <machine/mouse.h> to discourage use.
November 15th 2000 the warnings will be converted to errors.
January 15th 2001 the <machine/mouse.h> files will be removed.
2000-10-09 08:08:36 +00:00
Poul-Henning Kamp
00d25f512c Initiate deorbit burn sequence for <machine/console.h>.
Replace all in-tree uses with necessary subset of <sys/{fb,kb,cons}io.h>.
This is also the appropriate fix for exo-tree sources.

Put warnings in <machine/console.h> to discourage use.
November 15th 2000 the warnings will be converted to errors.
January 15th 2001 the <machine/console.h> files will be removed.
2000-10-08 21:34:00 +00:00
Bosko Milekic
ec222a71d9 Cleanup comment in machine/param.h regarding mbuf-related sizes, and get rid
of MCLOFSET, which does not appear to be used anywhere anymore, and if it is,
it probably shouldn't be.
2000-10-08 03:52:27 +00:00
Bruce Evans
cc46dff67f Work around a bug by adding struct tags. gcc-2.95 apparently gets the
check in the [basic.link] section of the C++ standard wrong.  gcc-2.7.2.3
apparently doesn't do the check, so the bug doesn't affect RELENG_3.

PR:		16170, 21427
Submitted by:	Max Khon <fjoe@lark.websci.ru> (i386 version)
Discussed with:	jdp
2000-10-06 11:53:32 +00:00
John Baldwin
6c56727456 - Change fast interrupts on x86 to push a full interrupt frame and to
return through doreti to handle ast's.  This is necessary for the
  clock interrupts to work properly.
- Change the clock interrupts on the x86 to be fast instead of threaded.
  This is needed because both hardclock() and statclock() need to run in
  the context of the current process, not in a separate thread context.
- Kill the prevproc hack as it is no longer needed.
- We really need Giant when we call psignal(), but we don't want to block
  during the clock interrupt.  Instead, use two p_flag's in the proc struct
  to mark the current process as having a pending SIGVTALRM or a SIGPROF
  and let them be delivered during ast() when hardclock() has finished
  running.
- Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways.  It was
  broken on the x86 if it was turned on since cpl is gone.  It's only use
  was to bogusly run softclock() directly during hardclock() rather than
  scheduling an SWI.
- Remove the COM_LOCK simplelock and replace it with a clock_lock spin
  mutex.  Since the spin mutex already handles disabling/restoring
  interrupts appropriately, this also lets us axe all the *_intr() fu.
- Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use
  temporary fast interrupts for the APIC trial.
- Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending
  signals in hardclock() that are to be delivered in ast().

Submitted by:	jakeb (making statclock safe in a fast interrupt)
Submitted by:	cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
John Baldwin
1931cf940a - Heavyweight interrupt threads on the alpha for device I/O interrupts.
- Make softinterrupts (SWI's) almost completely MI, and divorce them
  completely from the x86 hardware interrupt code.
  - The ihandlers array is now gone.  Instead, there is a MI shandlers array
    that just contains SWI handlers.
  - Most of the former machine/ipl.h files have moved to a new sys/ipl.h.
- Stub out all the spl*() functions on all architectures.

Submitted by:	dfr
2000-10-05 23:09:57 +00:00
John Baldwin
b4645202b5 Add atomic_readandclear_int and atomic_readandclear_long. 2000-10-05 22:19:50 +00:00
Jason Evans
645b8b81f0 Reduce userland namespace polution. 2000-10-04 01:21:58 +00:00
Jason Evans
d389654761 Fix spelling error ("exits" should be "exists"). 2000-10-04 01:20:49 +00:00
Doug Rabson
c703143638 Clear pcb_schednest in cpu_fork() for the child process. This is
is necessary since the child's call stack only includes one recursive
hold of sched_lock.
2000-10-03 08:03:03 +00:00
Bosko Milekic
7d03271452 Big mbuf subsystem diff #1: incorporate mutexes and fix things up somewhat
to accomodate the changes.

 Here's a list of things that have changed (I may have left out a few); for a
 relatively complete list, see http://people.freebsd.org/~bmilekic/mtx_journal

   * Remove old (once useful) mcluster code for MCLBYTES > PAGE_SIZE which
     nobody uses anymore. It was great while it lasted, but now we're moving
     onto bigger and better things (Approved by: wollman).

   * Practically re-wrote the allocation macros in sys/sys/mbuf.h to accomodate
     new allocations which grab the necessary lock.

   * Make sure that necessary mbstat variables are manipulated with
     corresponding atomic() routines.

   * Changed the "wait" routines, cleaned it up, made one routine that does
     the job.

   * Generalized MWAKEUP() macro. Got rid of m_retry and m_retryhdr, as they
     are now included in the generalized "wait" routines.

   * Sleep routines now use msleep().

   * Free lists have locks.

   * etc... probably other stuff I'm missing...

  Things to look out for and work on later:

   * find a better way to (dynamically) adjust EXT_COUNTERS

   * move necessity to recurse on a lock from drain routines by providing
     lock-free lower-level version of MFREE() (and possibly m_free()?).

   * checkout include of mutex.h in sys/sys/mbuf.h - probably violating
     general philosophy here.

   The code has been reviewed quite a bit, but problems may arise... please,
   don't panic! Send me Emails: bmilekic@freebsd.org

Reviewed by: jlemon, cp, alfred, others?
2000-09-30 06:30:39 +00:00
Paul Saab
92b123a002 Move MAXCPU from machine/smp.h to machine/param.h to fix breakage
with !SMP kernels.  Also, replace NCPUS with MAXCPU since they are
redundant.
2000-09-23 12:18:06 +00:00
Jason Evans
c6d1d1cf5d #include <sys/proc.h> in order to get curproc. This seems to be the lesser
of two evils; the greater evil is requiring sys/proc.h to be included
before including machine/mutex.h.
2000-09-23 00:00:50 +00:00
Paul Saab
7321545f26 Remove the NCPU, NAPIC, NBUS, NINTR config options. Make NAPIC,
NBUS, NINTR dynamic and set NCPU to a maximum of 16 under SMP.

Reviewed by:	peter
2000-09-22 23:40:10 +00:00
Doug Rabson
8a90ed65a6 Remove atomic_*_{32,64} since they are now inline. If you haven't rebuilt
modules since atomic.h was updated, now is the time.
2000-09-22 08:30:59 +00:00
Bill Paul
73334a4329 Add a new driver for the AMD PCnet/FAST, FAST+ and Home PCI adapters.
Previously, these cards were supported by the lnc driver (and they
still are, but the pcn driver will claim them first), which is fine
except the lnc driver runs them in 16-bit LANCE compatibility mode.
The pcn driver runs these chips in 32-bit mode and uses the RX alignment
feature to achieve zero-copy receive. (Which puts it in the same
class as the xl, fxp and tl chipsets.) This driver is also MI, so it
will work on the x86 and alpha platforms. (The lnc driver is still
needed to support non-PCI cards. At some point, I'll need to newbusify
it so that it too will me MI.)

The Am79c978 HomePNA adapter is also supported.
2000-09-20 17:30:22 +00:00
Poul-Henning Kamp
1534d6d899 Remove a few leftover CLBYTES related bits.
This was in the good old days to patch up a logical pagesize on hardware
with stupid VM pagesize.  Vaxen I belive.
2000-09-16 18:28:24 +00:00
John Baldwin
f46305730e Grab the scheduler lock before calling setrunqueue() and mi_switch(). 2000-09-14 22:17:34 +00:00
John Baldwin
606f8eb27a Remove the mtx_t, witness_t, and witness_blessed_t types. Instead, just
use struct mtx, struct witness, and struct witness_blessed.

Requested by:	bde
2000-09-14 20:15:16 +00:00
Doug Rabson
c090a2b4e5 Don't release Giant for db_nofault exceptions since it isn't held when
kdb_trap is called.
2000-09-14 13:04:38 +00:00
John Baldwin
9a94c9c5c3 - Remove the inthand2_t type and use the equivalent driver_intr_t type from
newbus for referencing device interrupt handlers.
- Move the 'struct intrec' type which describes interrupt sources into
  sys/interrupt.h instead of making it just be a x86 structure.
- Don't create 'ithd' and 'intrec' typedefs, instead, just use 'struct ithd'
  and 'struct intrec'
- Move the code to translate new-bus interrupt flags into an interrupt thread
  priority out of the x86 nexus code and into a MI ithread_priority()
  function in sys/kern/kern_intr.c.
- Remove now-uneeded x86-specific headers from sys/dev/ata/ata-all.c and
  sys/pci/pci_compat.c.
2000-09-13 18:33:25 +00:00
John Baldwin
220ca3ff5e - Fix spinlock exiting to handle recursion properly and only enable
interrupts at the proper time.
- Remove an uneeded test and just always set the MTX_RECURSE bit when
  recursing on a sleep lock.
2000-09-13 18:28:14 +00:00
John Baldwin
699fbdc2ab - Fix spinlock exits to properly handle the recursion count and only
re-enable interrupts when actually releasing the lock.
- Bring across some fixes to propagate_priority from the x86 code.
  (It still doesn't work properly, however.)
- Use the SMTX state when putting a process that blocks on a mutex to sleep.
- Use mi_switch instead of cpu_switch so that accounting works properly as
  well as other things.
- Bring across DDB protection of the spinlock timeout panic which is useful
  in a multiple CPU system when 1 CPU enters the debugger holding the
  sched_lock so that the other CPU doesn't panic as well resulting in all
  sorts of fun things.
- Bring across various other small changes in format strings and comments
  to sync up with the x86 code.
2000-09-13 18:26:33 +00:00
John Baldwin
5010ef836a Import the global sched_lock variable instead of using a private copy. This
fixes a problem where cpu_switch() wasn't properly saving and restoring
the recursion count for sched_lock.
2000-09-13 18:22:53 +00:00
John Baldwin
7ce7aa2a0b Fix a comment, we have mutexes now instead of a single lock. 2000-09-13 18:22:07 +00:00
John Baldwin
8dc1deec65 Add back in obtaining/releasing Giant around interrupt handlers. 2000-09-13 18:21:33 +00:00
Doug Rabson
14580e383c Merge changes from the i386 port to allow userret() to be called both
with and without holding the Giant mutex.
2000-09-12 22:47:10 +00:00
Doug Rabson
7a0758ab68 * Redo the cmpset inlines to use one less register. This incidentally
fixes a serious problem with the previous version where an input could
  have been placed in the same register as an output which would stop
  the inline from working properly.

* Redo atomic_{set,clear,add,subtract}_{32,64} as inlines since the code
  sequence is shorter than the call sequence to the code in atomic.s.
  I will remove the functions from atomic.s after a grace period to allow
  people to rebuild kernel modules.
2000-09-12 22:45:44 +00:00
Doug Rabson
569185f256 Really disable interrupts for spin mutexes instead of just pretending. 2000-09-12 22:40:29 +00:00