Commit Graph

117 Commits

Author SHA1 Message Date
John Baldwin
c6a37e8413 Divorce critical sections from spinlocks. Critical sections as denoted by
critical_enter() and critical_exit() are now solely a mechanism for
deferring kernel preemptions.  They no longer have any affect on
interrupts.  This means that standalone critical sections are now very
cheap as they are simply unlocked integer increments and decrements for the
common case.

Spin mutexes now use a separate KPI implemented in MD code: spinlock_enter()
and spinlock_exit().  This KPI is responsible for providing whatever MD
guarantees are needed to ensure that a thread holding a spin lock won't
be preempted by any other code that will try to lock the same lock.  For
now all archs continue to block interrupts in a "spinlock section" as they
did formerly in all critical sections.  Note that I've also taken this
opportunity to push a few things into MD code rather than MI.  For example,
critical_fork_exit() no longer exists.  Instead, MD code ensures that new
threads have the correct state when they are created.  Also, we no longer
try to fixup the idlethreads for APs in MI code.  Instead, each arch sets
the initial curthread and adjusts the state of the idle thread it borrows
in order to perform the initial context switch.

This change is largely a big NOP, but the cleaner separation it provides
will allow for more efficient alternative locking schemes in other parts
of the kernel (bare critical sections rather than per-CPU spin mutexes
for per-CPU data for example).

Reviewed by:	grehan, cognet, arch@, others
Tested on:	i386, alpha, sparc64, powerpc, arm, possibly more
2005-04-04 21:53:56 +00:00
Warner Losh
969eaf2179 Break out obscure ISA cards into their own files, as well as ne2000
and wd80x3 support.  Make the obscure ISA cards optional, and add
those options to NOTES on i386 (note: the ifdef around the whole code
is for module building).  Tweak pc98 ed support to include wd80x3 too.
Add goo for alpha too.

The affected cards are the 3Com 3C503, HP LAN+ and SIC (whatever that
is).  I couldn't find any of these for sale on ebay, so they are
untested.  If you have one of these cards, and send it to me, I'll
ensure that you have no future problems with it...

Minor cleanups as well by using functions rather than cut and paste
code for some probing operations (where the function call overhead is
lost in the noise).

Remove use of kvtop, since they aren't required anymore.  This driver
needs to get its memory mapped act together, however, and use bus
space.  It doesn't right now.

This reduces the size of if_ed.ko from about 51k to 33k on my laptop.
2005-02-09 20:03:40 +00:00
Warner Losh
685e700261 It appears that 'kbd' device has never been used and isn't needed.
Build tests show that this isn't used for GENERIC or LINT, and nobody
seemed to know why they existed.
2004-11-23 00:00:43 +00:00
Mark Murray
8ab2f5ecc5 Break out the MI part of the /dev/[k]mem and /dev/io drivers into
their own directory and module, leaving the MD parts in the MD
area (the MD parts _are_ part of the modules). /dev/mem and /dev/io
are now loadable modules, thus taking us one step further towards
a kernel created entirely out of modules. Of course, there is nothing
preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
Marcel Moolenaar
5971a234e5 Hook the GDB backend into the build. 2004-07-10 23:31:17 +00:00
Warner Losh
8ade021a7c Break out the isa and pccard front ends to the fdc controller device.
This should allow us to more easily break out the acpi and 'legacy pc'
front ends as well (so only the bus front end would touch rtc, for
example).

This isn't a great separation, since isa dma routines are still called
from the MI code, but it is a start.
2004-07-07 22:29:33 +00:00
Alan Cox
acecb8392c Move uma_small_alloc() and uma_small_free() out of the pmap and into their
own machine-dependent file.  This makes alpha consistent with amd64, ia64,
and powerpc.
2004-06-11 19:55:56 +00:00
Warner Losh
6cd91141eb Move fdc from isa/fd.c to dev/fdc/fdc.c. The old files were
repocopied.  Soon there will be additional bus attachments and
specialization for isa, acpi and pccard (and maybe pc98's cbus).

This was approved by nate, joerg and myself.  bde dissented on the new
location, but appeared to be OK after some discussion.
2004-05-17 05:46:16 +00:00
Alan Cox
1af1ebb84e - Add uiomove_fromphys() implementations to alpha and ia64. These only
differ trivially from amd64.
 - Correct a spelling error in a comment.
2004-03-20 21:06:20 +00:00
Dag-Erling Smørgrav
82ec4f6ea9 Forgot ffsl() and flsl() on alpha. 2004-01-13 18:05:49 +00:00
Dag-Erling Smørgrav
1de30b60cb Add ffsl(), fls() flsl() to platforms that don't already have them. 2004-01-13 15:37:23 +00:00
Marcel Moolenaar
2bec1c8919 Hook-up the uart(4) driver to the build. For a detailed description
of what uart(4) is and/or is not see the initial commit log of one
of the files in sys/dev/uart (or see share/man/man4/uart.4).

Note that currently pc98 shares the MD file with i386. This needs
to change when pc98 support is fleshed-out to properly support the
various UARTs. A good example is sparc64 in this respect.

We build uart(4) as a module on all platforms. This may break
the ppc port. That depends on whether they do actually build
modules.

To use uart(4) on alpha, one must use the NO_SIO option.
2003-09-06 23:23:26 +00:00
Warner Losh
11dc7df11d fix disordering of filenames. Place the dev/ppc files in alphabetical
order.
2003-08-04 02:39:14 +00:00
Doug Ambrisko
a373227418 Add printer support to puc(4) driver.
-	Move isa/ppc* to sys/dev/ppc (repo-copy)
      -	Add an attachment method to ppc for puc
      -	In puc we need to walk the chain of parents.
Still to do, is to make ppc(4) & puc(4) work on other platforms.  Testers
wanted.

PR:		38372 (in spirit done differently)
Verified by:	Make universe (if I messed up a platform please fix)
2003-08-01 02:25:32 +00:00
Bernd Walter
c4aebdb06c relocate eisa into MI files.
Suggested by:	jhb
2003-07-22 11:41:15 +00:00
Bernd Walter
b7c901eba2 Enable eisa support on alpha.
We need eisa bridge support on some models, which now depends on having
eisa in the kernel.
2003-07-21 19:15:25 +00:00
Poul-Henning Kamp
daabb372ca Separate the encoding/decoding functions for struct disklabel into a
separate source file which can be used from both kernel and userland code.
2003-04-17 07:39:03 +00:00
Ruslan Ermilov
5d1b6a85bc Standardize handling of locore.[sS] etc. files.
Submitted by:	jake, bde, ru
2003-02-28 21:59:14 +00:00
Eric Anholt
05d1e23aa7 Split the arch-specific AGP files into the appropriate files.* and do the same
for the agp module, and add agp to the list of modules to compile for alpha.
Add an alpha_mb() to agp_flush_cache for alpha -- it's not correct but may
improve the situation, and it's what linux and NetBSD do.
2003-02-14 06:33:52 +00:00
Poul-Henning Kamp
20ea2fe837 NO_GEOM cleanup: Remove subr_disklabel.c from alpha kernels. 2003-01-28 13:50:49 +00:00
Poul-Henning Kamp
123bf099ea We do not need subr_diskslice.c and subr_diskmbr.c any more on alpha. 2003-01-17 20:02:46 +00:00
Poul-Henning Kamp
2a2c796213 Move subr_disklabel.c and subr_diskslice.c from being MI to MD files,
so that they can be left out where they are unneeded.
2003-01-17 18:32:39 +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
Sam Leffler
8b7ce2ff52 hookup new crypto support to the config/build process 2002-10-04 20:42:36 +00:00
Peter Wemm
a72f2b1a91 Add Yet Another Duplicate of the font.h and ukbdmap.h rules. Remove
the font8x16.o glue, since that appears to have died ages ago and has
no remaining references.
2002-09-19 03:36:25 +00:00
Peter Wemm
5452db4885 de-count atkbdc and sc. Folks, remove the '1' from 'device sc 1' and
'device atkbdc 1'.
2002-08-19 23:59:21 +00:00
John Baldwin
ba268f0312 Move sio_isa.c back to MD files files due to PC98 brain damage. 2002-07-24 12:35:52 +00:00
John Baldwin
bdff575a42 Move all the sio(4) attachments (except for pc98's cbus attachment) to the
MI files file.  We can't move sio.c because pc98 uses a custom version.
2002-07-15 15:47:34 +00:00
John Baldwin
cb8881c3df Alpha does not support the PERFMON kernel option and does not have a
perfmon.c.
2002-07-15 14:45:32 +00:00
John Baldwin
319c5598e3 Neither options SLICE or sys/alpha/alpha/mountroot.c exist anymore. 2002-07-15 14:43:40 +00:00
David E. O'Brien
8442e07371 Desupport the TurboChannel Alpha's. This means the DEC3000/300* Pelic*
and DEC3000/[4-9]00 Flamingo/Sandpiper families.
2002-07-09 19:20:18 +00:00
Jake Burkholder
60b22c6d62 ${MACHINE_ARCH}dump.c -> dump_machdep.c. 2002-05-13 02:40:21 +00:00
Andrew Gallatin
338a21a47a Restore the ability to take crashdumps on alpha. This was cut and pasted
nearly in its entirety from i386, so it retains the phk/nati copyright.

Savecore likes the results, but I have no way to test it as gdb is
still broken.
2002-05-11 21:53:46 +00:00
David E. O'Brien
89de0c9cbf pal.s is no longer needed for the kernel to build with Gcc. We now use
in-line macros.  pal.s remains however for use by Compaq 'ccc' some day.
2002-04-15 23:28:10 +00:00
David E. O'Brien
0301e9c83b Turn on TGA support.
Submitted by:	Andrew M. Miklic <AndrwMklc@cs.com>
2002-04-13 22:34:16 +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
Hajimu UMEMOTO
b5a8f767a6 - Speedup 3DES by using assembly code for i386.
- Sync des/blowfish to more recent openssl.

Obtained from:	KAME/NetBSD
MFC after:	2 weeks
2002-03-05 09:19:02 +00:00
Thomas Moestl
90ce56c287 Add the following functions/macros to support byte order conversions and
device drivers for bus system with other endinesses than the CPU (using
interfaces compatible to NetBSD):

- bwap16() and bswap32(). These have optimized implementations on some
  architectures; for those that don't, there exist generic implementations.
- macros to convert from a certain byte order to host byte order and vice
  versa, using a naming scheme like le16toh(), htole16().
  These are implemented using the bswap functions.
- stream bus space access functions, which do not perform a byte order
  conversion (while the normal access functions would if the bus endianess
  differs from the CPU endianess).

htons(), htonl(), ntohs() and ntohl() are implemented using the new
functions above for kernel usage. None of the above interfaces is currently
exported to user land.

Make use of the new functions in a few places where local implementations
of the same functionality existed.

Reviewed by:	mike, bde
Tested on alpha by:	mike
2002-02-27 17:16:18 +00:00
Peter Wemm
d9ec674175 genassym builds need the -fno-common stripped out. 2002-01-11 07:52:02 +00:00
Poul-Henning Kamp
e1a7c5c881 GC userconfig after Peter axed it 15 months ago. 2001-11-05 21:46:35 +00:00
Warner Losh
cf17adf0a9 OLDCARD isn't supported on alpha or ia64, so don't pretend that it is by
including it.
2001-10-30 14:53:36 +00:00
Warner Losh
e282bb41f0 Don't try to use sio with NEWCARD 16 bit yet. It eats all pccards :-)
Reported by: Marcell Moolenaar
2001-10-30 14:49:29 +00:00
Warner Losh
2ce87d3448 Break out the bus front ends into their own files. Rewrite
sio_pccard_detach to use new siodetach.  Add an extra arg to sioprobe
to tell driver to probe/not probe the device for IRQs.

This incorporates most of Bruce's review material.  I'm at a good
checkpoint, but there will be more to come based on bde's further
reviews.

Reviewed by: bde
2001-10-23 15:17:33 +00:00
Warner Losh
d75c1b4a90 First commit after a repo copy of isa/sio* -> dev/sio:
Move sio from isa/sio.c to dev/sio/sio.c.  The next step is to break
out the front end attachments, improve support for these parts on
different busses, and maybe, if we're lucky, merging in pc98 support.
It will also be MI and live in conf/files rather than files.*.

Approved by: bde
Tested with: i386, pc98
2001-10-22 02:48:38 +00:00
Dag-Erling Smørgrav
7c62990641 Move procfs_* from procfs_machdep.c into sys_process.c, and rename them to
proc_* in the process; procfs_machdep.c is no longer needed.

Run-tested on i386, build-tested on Alpha, untested on other platforms.
2001-10-21 23:57:24 +00:00
Dag-Erling Smørgrav
f530103a66 These files have been gone for a long time. 2001-10-13 15:57:05 +00:00
Peter Wemm
013e09a432 Add linux_sysctl.c, and linux_uid16.c to the x86 platforms. 2001-09-08 22:35:28 +00:00
Andrew Gallatin
055d495677 Fix linux_getcwd() so that if the cwd isn't cached (__getcwd() fails),
the cwd is looked up inside the kernel. The native getcwd() in libc
handles this in userland if __getcwd() fails.

Obtained from: NetBSD via OpenBSD
Tested by: Chris Casey <chriss@phys.ksu.edu>, Markus Holmberg <markush@acc.umu.se>
Reviewed by: Darrell Anderson <anderson@cs.duke.edu>
PR: kern/24315
2001-08-29 19:05:27 +00:00
Kazutaka YOKOTA
2fe5e0b184 Use #ifdef DEV_SPLASH (from opt_splash.h) rather than
#if NSPLASH > 0 (from splash.h) to test the presence
of the splash driver.
2001-08-02 13:22:33 +00:00
Peter Wemm
2398f0cd1d Hints overhaul:
- Replace some very poorly thought out API hacks that should have been
  fixed a long while ago.
- Provide some much more flexible search functions (resource_find_*())
- Use strings for storage instead of an outgrowth of the rather
  inconvenient temporary ioconf table from config().  We already had a
  fallback to using strings before malloc/vm was running anyway.
2001-06-12 09:40:04 +00:00