Commit Graph

812 Commits

Author SHA1 Message Date
jhb
a1bbb80e56 Fix all the interrupt enabled/disabled assertions which were backwards. 2000-11-15 19:45:10 +00:00
benno
faf86e96f0 Beginnings of the powerpc machine dependant includes.
Reviewed by:	obrien
Obtained from:	NetBSD
2000-11-10 08:06:50 +00:00
obrien
eb3fe2715f Our SHRT_MIN definition was actually 4 bits too big.
Submitted by:	Bradley T. Hughes <bhughes@trolltech.com>
2000-11-04 21:01:44 +00:00
jhb
ff18363a3e - 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
obrien
b8efe2aeab * Update comments
* convert decimal constants to hex
Submitted by:	bde

* Add ISO-C99 long long limits
2000-10-24 10:48:50 +00:00
mjacob
1371d7ded9 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
jhb
ab67e1548e 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
jhb
56efda2aa8 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
jhb
28f96ee081 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
jhb
f671832d76 - 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
phk
35f5b229bc Move DELAY() from <machine/clock.h> to <sys/systm.h> 2000-10-15 09:51:49 +00:00
jhb
fd275a78bd - 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
jhb
71938e9fcd - 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
jasone
bea51a4aa1 Reduce userland namespace polution. 2000-10-04 01:21:58 +00:00
jasone
27bf3e86c9 #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
jhb
ebc05310ca 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
jhb
2bef2cffd4 - 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
dfr
7aec72700e Really disable interrupts for spin mutexes instead of just pretending. 2000-09-12 22:40:29 +00:00
jhb
9a8ad49a6d The alpha doesn't have a eflags register, so don't refer to it here. 2000-09-11 06:42:50 +00:00
jasone
e454be9f46 Style cleanups. No functional changes. 2000-09-09 23:18:48 +00:00
jasone
9d6c8a5123 Add file and line arguments to WITNESS_ENTER() and WITNESS_EXIT, since
__FILE__ and __LINE__ don't get expanded usefully in inline functions.

Add const to all witness*() arguments that are filenames.
2000-09-09 22:43:22 +00:00
jhb
3eeeb3783a Add missing \'s to multline macros used for assertions. 2000-09-09 00:14:27 +00:00
jasone
6c6d26fe03 Use inline functions instead of macros for mtx_enter(), mtx_try_enter(),
and mtx_exit().  This change tracks the i386 version.

Rename mtx_enter(), mtx_try_enter(), and mtx_exit() and wrap them with cpp
macros that expand to pass filename and line number information.  This is
necessary since we're using inline functions instead of macros now.

Add const to the filename pointers passed througout the mtx and witness
code.
2000-09-08 21:47:29 +00:00
jasone
769e0f974d Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*().  See mutex(9).  (Note: The
  alpha port is still in transition and currently uses both.)

* Per-CPU idle processes.

* Interrupts are run in their own separate kernel threads and can be
  preempted (i386 only).

Partially contributed by:	BSDi (BSD/OS)
Submissions by (at least):	cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
gallatin
ccfeb47d98 Support bounce buffers for ISA DMA on the alpha. This is required for the
irongate chipset (used in the UP1000) which does not support scatter/gather
DMA.  We'll still use scatter gather if the core logic chipset supports it.

Reviewed by: dfr
2000-06-19 18:41:27 +00:00
jhb
a1a769d93e Handle PCI devices that actually use an ISA IRQ for the cia and tsunami
chipsets.  An example of this is the USB controller on these chipsets.
With this, I can now use USB devices on the test Alpha I am borrowing at
the moment.

Reviewed by:	dfr, obrien
2000-05-10 18:54:28 +00:00
sos
6feaaed878 Update the ata driver to take more advantage of newbus, this
was needed to make attach/detach of devices work, which is
needed for the PCCARD support.
(PCCARD support is still not working though, more to come on that)

Support the CMD646 chip which is used on many alphas, sadly only
in WDMA2 mode, as the silicon is broken beyond belief for UDMA modes.

Lots of cosmetic fixes here and there.

Sorry for the size of this megapatchfromhell but it was not
possible otherwise...

newbus patches based on work from: dfr (Doug Rabson)
2000-02-18 20:57:33 +00:00
peter
15b9bcb121 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 04:46:21 +00:00
dfr
37ab4f7a31 * Implement bus_set/get/delete_resource for pci.
* Change the hack used on the alpha for mapping devices into DENSE or
  BWX memory spaces to a simpler one. Its still a hack and should be
  a seperate api to explicitly map the resource.
* Add $FreeBSD$ as necessary.
1999-10-14 21:38:33 +00:00
marcel
a16d76cb56 sigset_t change (part 3 of 5)
-----------------------------

By introducing a new sigframe so that the signal handler operates
on the new siginfo_t and on ucontext_t instead of sigcontext, we
now need two version of sendsig and sigreturn.

A flag in struct proc determines whether the process expects an
old sigframe or a new sigframe. The signal trampoline handles
which sigreturn to call. It does this by testing for a magic
cookie in the frame.

The alpha uses osigreturn to implement longjmp. This means that
osigreturn is not only used for compatibility with existing
binaries. To handle the new sigset_t, setjmp saves it in
sc_reserved (see NOTE).

the struct sigframe has been moved from frame.h to sigframe.h
to handle the complex header dependencies that was caused by
the new sigframe.

NOTE: For the i386, the size of jmp_buf has been increased to hold
      the new sigset_t. On the alpha this has been prevented by
      using sc_reserved in sigcontext.
1999-09-29 15:06:27 +00:00
peter
3b842d34e8 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
dfr
37dec27558 Add support for SYS_RES_DENSE and SYS_RES_BWX resource types. These are
equivalent to SYS_RES_MEMORY for x86 but for alpha, the rman_get_virtual()
address of the resource is initialised to point into either dense-mapped
or bwx-mapped space respectively, allowing direct memory pointers to be
used to device memory.

Reviewed by: Andrew Gallatin <gallatin@cs.duke.edu>
1999-07-28 07:57:48 +00:00
jlemon
fb9048b07b Implement support for hardware debug registers on the i386.
Submitted by:	Brian Dean <brdean@unx.sas.com>
1999-07-09 04:16:00 +00:00
peter
45332ea239 Add alpha_platform_setup_ide_intr() and alpha_platform_assign_pciintr()
prototypes.
1999-07-01 22:47:53 +00:00
peter
16b8acf208 Declare busdma_swi() like on i386 version. 1999-07-01 21:58:38 +00:00
bde
7334fbb11b Fixed style bugs in previous commit. 1999-05-22 08:36:55 +00:00
ache
85341fee3e Set CHAR_{MIN,MAX} according to -funsigned-char flag given or not
PR: 11627
Submitted by: Petr Lampa <lampa@fee.vutbr.cz>
1999-05-20 23:33:35 +00:00
msmith
e79dcdb69f Add the ability to specify where on the at_shutdown queue a handler is
installed.

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

Submitted by:	Some ideas from Bruce Walter <walter@fortean.com>
1998-10-30 05:41:15 +00:00
wollman
b9784762c1 A small fragment of new ISA framework: manifest constants for the resources
implemented by the i386 root nexus.
1998-10-29 01:56:23 +00:00
peter
4523e75227 Typo fix. 1998-10-14 10:04:32 +00:00
peter
a6df719969 Initial attempt to update the Alpha loader and kernel to use the machine
independent elf loader and have access to kld modules.  Jordan and I were
not sure how to create boot floppies, and the things we tried just made
SRM laugh in our faces - but it was upset at boot1 which was not touched
by these changes.  Essentially this has been untested. :-(

What this does is to steal the last three slots from the nine spare longs
in the bootinfo_v1 struct to pass the module base pointer through.

The startup code now to set up and fills in the module and environment
structures, hopefully close enough to the i386 layout to be able to use
the same kernel code.  We now pass though the updated end of the kernel
space used, rather than _end. (like the i386).

If this does not work, it needs to be beaten into shape pronto.  Otherwise
it should be backed out before 3.0.

Pre-approved in principle by: dfr
1998-10-14 09:53:25 +00:00
dfr
0d820bb7db Add support for adjkerntz (largely untested). 1998-10-06 08:40:18 +00:00
dfr
968dcc7cb5 Automatically detect which disk was booted and change the root to that disk. 1998-09-26 12:22:53 +00:00
jdp
60718890ae Add new functions fill_fpregs() and set_fpregs(), like fill_regs()
and set_regs() but for the floating point register state.  The code
is stolen from procfs_machdep.c, and moved out of there into
machdep.c.

These functions are needed for generating ELF core dumps.
1998-09-14 22:43:40 +00:00
dfr
9bc86e47bd Add declaration of {aquire,release}_timer2(). 1998-07-22 08:26:23 +00:00
dfr
f32529a069 Overhaul the spl system so that it actually works properly. 1998-07-12 16:32:10 +00:00
dfr
771d8cc0ed Add declaration of the NetBSD/alpha bootinfo. 1998-07-05 12:13:18 +00:00
dfr
224577d6cf Add initial support for the FreeBSD/alpha kernel. This is very much a
work in progress and has never booted a real machine.  Initial
development and testing was done using SimOS (see
http://simos.stanford.edu for details).  On the SimOS simulator, this
port successfully reaches single-user mode and has been tested with
loads as high as one copy of /bin/ls :-).

Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
tegge
9fdbafa2fe Disallow reading the current kernel stack. Only the user structure and
the current registers should be accessible.
Reviewed by:	David Greenman <dg@root.com>
1998-05-19 00:00:14 +00:00
peter
94b6d72794 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
jkh
808a36ef65 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
peter
945d0db76f Add commands for ptrace get/set registers.. (Same numbers as NetBSD) 1996-01-24 18:51:48 +00:00
bde
aa882fc04e Don't define CLK_TCK here.
Uniformize idempotency ifdef.
1995-02-03 21:49:18 +00:00
dg
8d205697aa Added $Id$ 1994-08-02 07:55:43 +00:00
rgrimes
2469c867a1 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
1994-05-25 09:21:21 +00:00
rgrimes
273932cb94 BSD 4.4 Lite Kernel Sources 1994-05-25 01:34:38 +00:00
wollman
b4d4ec15af First pass at adding locale support. This code only deals with the LC_CTYPE
class of locale data, but could be extended to handle other locale
classes, as well as message catalogues and other non-locale i18n
support.

I have left the old _ctype_ array in place, and moved the ctype.h
header to octype.h, so that existing shared binaries will still be
able to find and use it as they require.

See /usr/src/share/locale for information on how to create new locale
data files (eventually this procedure will be improved).  I'd like to
have a family of locale files for various countries, languages, and
character sets, so please contribute some.

This code was originally written by Paul Borman and contributed to
4.4; I did the integration, and have somewhat tested it.  crt0.c
probably ought to call setlocale() if it doesn't already, but I'd like
for people to create some locale files and try things manually first
before I make every program do this.
1994-04-04 21:11:12 +00:00
ache
c4884d6b78 Bump CLK_TCK to more precise value (128)
If you want more precise, use directly getrusage(),
because clock() emulated via it.
1994-02-26 00:56:02 +00:00
alm
60ba667cf6 adding libc/quad:
added _QUAD_HIGH/LOW
added (U_)QUAD_MAX/MIN
(from NetBSD)
1993-12-19 05:14:46 +00:00
wollman
371ee40cea Made all header files idempotent and moved incorrect common data from
headers into a related source file.  Added cons.h as first step towards
moving i386/i386/cons.h to machine/cons.h where it belongs.
1993-11-07 17:43:17 +00:00
rgrimes
721e412d5e Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some
minor cleanup.  Added $Id$ to files that did not have any version info, etc
1993-10-16 14:40:57 +00:00
rgrimes
25062ba061 Initial import, 0.1 + pk 0.2.4-B1 1993-06-12 14:58:17 +00:00