Commit Graph

68 Commits

Author SHA1 Message Date
glebius
9cf64d6c35 Merge from projects/counters: counter(9).
Introduce counter(9) API, that implements fast and raceless counters,
provided (but not limited to) for gathering of statistical data.

See http://lists.freebsd.org/pipermail/freebsd-arch/2013-April/014204.html
for more details.

In collaboration with:	kib
Reviewed by:		luigi
Tested by:		ae, ray
Sponsored by:		Nginx, Inc.
2013-04-08 19:40:53 +00:00
nyan
2054c9670e Use ANSI prototype to fix build with clang.
MFC after:	1 week
2012-11-10 13:24:33 +00:00
attilio
6997194551 Add an unified macro to deny ability from the compiler to reorder
instruction loads/stores at its will.
The macro __compiler_membar() is currently supported for both gcc and
clang, but kernel compilation will fail otherwise.

Reviewed by:	bde, kib
Discussed with:	dim, theraven
MFC after:	2 weeks
2012-10-09 14:32:30 +00:00
kib
7b36a08108 Implement mechanism to export some kernel timekeeping data to
usermode, using shared page.  The structures and functions have vdso
prefix, to indicate the intended location of the code in some future.

The versioned per-algorithm data is exported in the format of struct
vdso_timehands, which mostly repeats the content of in-kernel struct
timehands. Usermode reading of the structure can be lockless.
Compatibility export for 32bit processes on 64bit host is also
provided. Kernel also provides usermode with indication about
currently used timecounter, so that libc can fall back to syscall if
configured timecounter is unknown to usermode code.

The shared data updates are initiated both from the tc_windup(), where
a fast task is queued to do the update, and from sysctl handlers which
change timecounter. A manual override switch
kern.timecounter.fast_gettime allows to turn off the mechanism.

Only x86 architectures export the real algorithm data, and there, only
for tsc timecounter. HPET counters page could be exported as well, but
I prefer to not further glue the kernel and libc ABI there until
proper vdso-based solution is developed.

Minimal stubs neccessary for non-x86 architectures to still compile
are provided.

Discussed with:	bde
Reviewed by:	jhb
Tested by:	flo
MFC after:	1 month
2012-06-22 07:06:40 +00:00
jhb
1dd88fec2f Move the legacy(4) driver to x86. 2012-03-30 19:10:14 +00:00
tijl
fee85d364e Copy amd64 sysarch.h to x86 and merge with i386 sysarch.h. Replace
amd64/i386/pc98 sysarch.h with stubs.
2012-03-19 21:57:31 +00:00
tijl
42f636fdcd Copy i386 specialreg.h to x86 and merge with amd64 specialreg.h. Replace
amd64/i386/pc98 specialreg.h with stubs.
2012-03-19 21:34:11 +00:00
tijl
ea1f38e564 Copy i386 psl.h to x86 and replace amd64/i386/pc98 psl.h with stubs. 2012-03-19 21:29:57 +00:00
tijl
2bf580ea66 Copy i386 reg.h to x86 and merge with amd64 reg.h. Replace i386/amd64/pc98
reg.h with stubs.

The tREGISTER macros are only made visible on i386. These macros are
deprecated and should not be available on amd64.

The i386 and amd64 versions of struct reg have been renamed to struct
__reg32 and struct __reg64. During compilation either __reg32 or __reg64
is defined as reg depending on the machine architecture. On amd64 the i386
struct is also available as struct reg32 which is used in COMPAT_FREEBSD32
code.

Most of compat/ia32/ia32_reg.h is now IA64 only.

Reviewed by:	kib (previous version)
2012-03-18 19:06:38 +00:00
tijl
ab137477da Copy amd64 ptrace.h to x86 and merge with i386 ptrace.h. Replace
amd64/i386/pc98 ptrace.h with stubs.

For amd64 PT_GETXSTATE and PT_SETXSTATE have been redefined to match the
i386 values. The old values are still supported but should no longer be
used.

Reviewed by:	kib
2012-03-04 20:24:28 +00:00
tijl
bb4b86d0ab Copy amd64 trap.h to x86 and replace amd64/i386/pc98 trap.h with stubs. 2012-03-04 14:12:57 +00:00
tijl
28848902c7 Copy amd64 float.h to x86 and merge with i386 float.h. Replace
amd64/i386/pc98 float.h with stubs.
2012-03-04 14:00:32 +00:00
tijl
2db0395534 Copy amd64 stdarg.h to x86 and replace amd64/i386/pc98 stdarg.h with stubs. 2012-02-28 22:30:58 +00:00
tijl
e5cc7570cf Copy amd64 setjmp.h to x86 and replace amd64/i386/pc98 setjmp.h with stubs. 2012-02-28 22:17:52 +00:00
tijl
bfd7a07500 Copy amd64 endian.h to x86 and merge with i386 endian.h. Replace
amd64/i386/pc98 endian.h with stubs.

In __bswap64_const(x) the conflict between 0xffUL and 0xffULL has been
resolved by reimplementing the macro in terms of __bswap32(x). As a side
effect __bswap64_var(x) is now implemented using two bswap instructions on
i386 and should be much faster. __bswap32_const(x) has been reimplemented
in terms of __bswap16(x) for consistency.
2012-02-28 19:39:54 +00:00
tijl
738f5859fb Copy amd64 _stdint.h to x86 and merge with i386 _stdint.h. Replace
amd64/i386/pc98 _stdint.h with stubs.
2012-02-28 18:38:33 +00:00
tijl
86b4719ed5 Copy amd64 _limits.h to x86 and merge with i386 _limits.h. Replace
amd64/i386/pc98 _limits.h with stubs.
2012-02-28 18:24:28 +00:00
tijl
3b29ed2286 Copy amd64 _types.h to x86 and merge with i386 _types.h. Replace existing
amd64/i386/pc98 _types.h with stubs.
2012-02-28 18:15:28 +00:00
marius
0fa74f406f Move the scsi_da_bios_params() prototype from pc98_machdep.h to md_var.h
where the prototype for pc98_ata_disk_firmware_geom_adjust() also lives
in order to avoid an #ifdef'ed include in cam(4).
2011-11-27 16:22:19 +00:00
tijl
75b3c29fb3 Copy powerpc/include/_inttypes.h to x86 and replace i386/amd64/pc98
headers with stubs.

Approved by:	kib (mentor)
2011-01-08 18:09:48 +00:00
tijl
0f810ef0a2 Merge amd64 and i386 bus.h and move the resulting header to x86. Replace
the original amd64 and i386 headers with stubs.

Rename (AMD64|I386)_BUS_SPACE_* to X86_BUS_SPACE_* everywhere.

Reviewed by:	imp (previous version), jhb
Approved by:	kib (mentor)
2010-12-20 16:39:43 +00:00
brucec
6e3faf1602 Revert r216134. This checkin broke platforms where bus_space are macros:
they need to be a single statement, and do { } while (0) doesn't work in this
situation so revert until a solution can be devised.
2010-12-03 07:09:23 +00:00
brucec
dc1c4b9270 Disallow passing in a count of zero bytes to the bus_space(9) functions.
Passing a count of zero on i386 and amd64 for [I386|AMD64]_BUS_SPACE_MEM
causes a crash/hang since the 'loop' instruction decrements the counter
before checking if it's zero.

PR:	kern/80980
Discussed with:	jhb
2010-12-02 22:19:30 +00:00
tijl
fcb29e8cf3 Include x86/_align.h directly instead of including the i386 header.
Approved by:	kib (mentor)
2010-11-26 11:57:45 +00:00
jkim
56b80da7ca Move identical copies of apm_bios.h to sys/x86/include, replace them with
stubs, and adjust PC98 stub accordingly.

Reviewed by:	imp, nyan
2010-11-11 19:36:21 +00:00
jhb
acd72eb169 - Remove <machine/mutex.h>. Most of the headers were empty, and the
contents of the ones that were not empty were stale and unused.
- Now that <machine/mutex.h> no longer exists, there is no need to allow it
  to override various helper macros in <sys/mutex.h>.
- Rename various helper macros for low-level operations on mutexes to live
  in the _mtx_* or __mtx_* namespaces.  While here, change the names to more
  closely match the real API functions they are backing.
- Drop support for including <sys/mutex.h> in assembly source files.

Suggested by:	bde (1, 2)
2010-11-09 20:46:41 +00:00
attilio
4963bf694d Move the mptable.h under x86/include/.
Sponsored by:	Sandvine Incorporated
MFC after:	14 days
2010-11-09 20:28:09 +00:00
jhb
e0a2a85d3a Move <machine/apicreg.h> to <x86/apicreg.h>. 2010-11-01 18:18:46 +00:00
jhb
c7dd85142c Move the <machine/mca.h> header to <x86/mca.h>. 2010-11-01 17:40:35 +00:00
nyan
8d191fa363 Rename BUS_SPACE_IO and BUS_SPACE_MEM defines to BUS_SPACE_TAG_IO and
BUS_SPACE_TAG_MEM respectively to avoid conflict with nexus.c.
2010-10-31 03:03:20 +00:00
kib
6375d4e4db Remove the support for int13 FPU exception reporting on i386. It is
believed that all 486-class CPUs FreeBSD is capable to run on, either
have no FPU and cannot use external coprocessor, or have FPU on the
package and can use #MF.

Reviewed by:	bde
Tested by:	pho (previous version)
2010-06-23 11:12:58 +00:00
marius
427e94121a Change ad_firmware_geom_adjust() to operate on a struct disk * only and
hook it up to ada(4) also. While at it, rename *ad_firmware_geom_adjust()
to *ata_disk_firmware_geom_adjust() etc now that these are no longer
limited to ad(4).

Reviewed by:	mav
MFC after:	3 days
2010-05-20 12:46:19 +00:00
nyan
57c4036745 MFi386: Remove old file. 2009-09-09 10:05:50 +00:00
phk
e645b495ed Get rid of the _NO_NAMESPACE_POLLUTION kludge by creating an
architecture specific include file containing the _ALIGN*
stuff which <sys/socket.h> needs.
2009-09-08 20:45:40 +00:00
nyan
f0fb2affc3 Add stub vm.h for pc98.
Approved by:	re (kensmith)
2009-06-27 02:20:31 +00:00
nyan
d515bd5599 MFi386: revision 192050
Implement simple machine check support.
2009-05-14 16:01:29 +00:00
nyan
909db6af61 - Add the i386_memio_map_load() function to load I/O address table.
- Add the bus_space_compare macro for bus_space consistency.
- Switch using the bus_space_map_load() in isa_load_resourcev().
2008-09-07 04:44:24 +00:00
nyan
b8ebcde152 Add i386_memio_compare() to compare two resources.
It's used by uart(4) in the future.
2008-07-05 16:31:58 +00:00
wkoszek
813c6fb348 Remove obselete PECOFF image activator support.
PRs assigned at the time of removal:    kern/80742

Discussed on:   freebsd-current (silence), IRC
Tested by:      make universe
Approved by:    cognet (mentor)
2008-06-14 12:51:44 +00:00
nyan
4f133b2d11 Remove my copyright. This file includes simply i386's one now. 2008-04-19 05:07:50 +00:00
phk
fa71439e44 The "free-lance" timer in the i8254 is only used for the speaker
these days, so de-generalize the acquire_timer/release_timer api
to just deal with speakers.

The new (optional) MD functions are:
	timer_spkr_acquire()
	timer_spkr_release()
and
	timer_spkr_setfreq()

the last of which configures the timer to generate a tone of a given
frequency, in Hz instead of 1/1193182th of seconds.

Drop entirely timer2 on pc98, it is not used anywhere at all.

Move sysbeep() to kern/tty_cons.c and use the timer_spkr*() if
they exist, and do nothing otherwise.

Remove prototypes and empty acquire-/release-timer() and sysbeep()
functions from the non-beeping archs.

This eliminate the need for the speaker driver to know about
i8254frequency at all.  In theory this makes the speaker driver MI,
contingent on the timer_spkr_*() functions existing but the driver
does not know this yet and still attaches to the ISA bus.

Syscons is more tricky, in one function, sc_tone(), it knows the hz
and things are just fine.

In the other function, sc_bell() it seems to get the period from
the KDMKTONE ioctl in terms if 1/1193182th second, so we hardcode
the 1193182 and leave it at that.  It's probably not important.

Change a few other sysbeep() uses which obviously knew that the
argument was in terms of i8254 frequency, and leave alone those
that look like people thought sysbeep() took frequency in hertz.

This eliminates the knowledge of i8254_freq from all but the actual
clock.c code and the prof_machdep.c on amd64 and i386, where I think
it would be smart to ask for help from the timecounters anyway [TBD].
2008-03-26 20:09:21 +00:00
nyan
5d1ed3596a Add stub for pc98. 2008-03-14 09:00:04 +00:00
rwatson
633b64a51d Catch up pc98 for i386 stack(9) changes:
Add stub stack.h for pc98 that includes i386 pc98.

  Add i386 stack_machdep.c to files.pc98.

Spotted by:	tinderbox
2007-12-03 11:38:28 +00:00
bz
c9dd2d5305 I4B header files were repo-copied from sys/i386/include/ to
sys/i4b/include/ so they will be available to all architectures
once I4B compiles on those.

We no longer need these "glue" files.

Reminded by:	nyan
Approved by:	re (kensmith)
2007-07-06 08:05:46 +00:00
imp
82de09b2c0 Add pc98 specific code to adjust the firmware geometry when it differs
from the actual geometry.  This enables support of disks larger than
~120GB on pc98 boxes.  They make great little network appliances.
I've been using these changes for the past year or so on my network
storage pc98 box :-).
2006-08-09 18:25:07 +00:00
phk
537a82e24b Send the pcvt(4) driver off to retirement. 2006-05-17 09:33:15 +00:00
nyan
65471b2ff8 Add minidump.h for pc98. 2006-04-21 12:13:59 +00:00
imp
c2b2965b6a By popular demand, move __HAVE_ACPI and __PCI_REROUTE_INTERRUPT into
param.h.  Per request, I've placed these just after the
_NO_NAMESPACE_POLLUTION ifndef.  I've not renamed anything yet, but
may since we don't need the __.

Submitted by: bde, jhb, scottl, many others.
2006-01-09 06:05:57 +00:00
imp
8d9b67a0e3 Define __HAVE_ACPI and/or __PCI_REROUTE_INTERRUPT, as appropriate for
each platform.  These will be used in the pci code in preference to
the complicated #ifdefs we have there now.
2006-01-01 20:59:28 +00:00
nyan
5446062ac8 Switch MACHINE to "pc98" on FreeBSD/pc98.
Add copyright.

Approved by:	FreeBSD/pc98 development team.
2005-12-08 12:35:12 +00:00