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65e80d25ca
freebsd-skq/include
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rpaulo 65e80d25ca HPET: create /dev/hpetN as a way to access HPET from userland. 
In some cases, TSC is broken and special applications might benefit
from memory mapping HPET and reading the registers to count time.
Most often the main HPET counter is 32-bit only[1], so this only gives
the application a 300 second window based on the default HPET
interval.
Other applications, such as Intel's DPDK, expect /dev/hpet to be
present and use it to count time as well.

Although we have an almost userland version of gettimeofday() which
uses rdtsc in userland, it's not always possible to use it, depending
on how broken the multi-socket hardware is.

Install the acpi_hpet.h so that applications can use the HPET register
definitions.

[1] I haven't found a system where HPET's main counter uses more than
32 bit.  There seems to be a discrepancy in the Intel documentation
(claiming it's a 64-bit counter) and the actual implementation (a
32-bit counter in a 64-bit memory area).

MFC after:	1 week
Relnotes:	yes
2014-10-24 18:39:15 +00:00
..
arpa Update our stub resolver to final version of libbind. 2014-08-12 12:36:06 +00:00
gssapi Fix gssapi/gssapi_krb5.h after Heimdal 1.5.1 import. 2013-06-30 07:46:22 +00:00
protocols Add proper prerequisites for even two more headers. 2013-05-21 21:50:11 +00:00
rpc Replace Sun Industry Standards Source License for Sun RPC code with a 2013-11-25 19:08:38 +00:00
rpcsvc Fix build with rpcgen using a recent (tested with gcc 4.9.1) GNU cpp 2014-10-09 06:58:33 +00:00
xlocale Fix strcasecmp_l() and strncasecmp_l() POSIX 2008 compliance. 2014-05-30 01:09:07 +00:00
_ctype.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
a.out.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
ar.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
assert.h Don't define static_assert for C++. 2011-12-29 14:41:17 +00:00
bitstring.h
complex.h I'm happy to finally commit stephen@'s implementations of cacos, 2013-05-30 04:49:26 +00:00
cpio.h
ctype.h Correctly expose xlocale functions if people include the headers in the wrong 2012-03-28 12:11:54 +00:00
db.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
dirent.h Fix some edge cases with rewinddir(): 2014-07-11 16:16:26 +00:00
dlfcn.h Implement fdlopen(3), an rtld interface to load shared object by file 2012-01-07 10:33:01 +00:00
elf-hints.h
elf.h
err.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fmtmsg.h Fix a small typo. Fireware -> firmware. 2012-06-05 19:42:57 +00:00
fnmatch.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fstab.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fts.h Allow certain headers to be included more easily. 2013-05-21 21:20:10 +00:00
ftw.h
getopt.h Remove NetBSD Foundation clauses 3 & 4. They eliminated those clauses 2010-02-16 19:28:10 +00:00
glob.h - Add restrict keyword to glob(3) 2011-12-20 22:56:13 +00:00
grp.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
gssapi.h
hesiod.h Remove NetBSD Foundation clauses 3 & 4. They eliminated those clauses 2010-02-16 19:28:10 +00:00
iconv.h Add ICONV_{GET,SET}_ILSEQ_INVALID iconvctl. GNU iconv returns EILSEQ 2013-11-25 01:26:06 +00:00
ieeefp.h People porting FreeBSD to new architectures ought not have to 2011-10-21 06:41:46 +00:00
ifaddrs.h Allow certain headers to be included more easily. 2013-05-21 21:20:10 +00:00
inttypes.h Rename __wchar_t so it no longer conflicts with __wchar_t from clang 3.4 2014-04-01 14:46:11 +00:00
iso646.h Avoid accidental conflicts with C++ operator keywords. 2011-09-27 16:33:17 +00:00
kenv.h
langinfo.h langinfo.h: Hide YESSTR and NOSTR in strict POSIX mode. 2014-04-19 12:38:01 +00:00
libgen.h Add basename_r(3) to complement basename(3). basename_r(3) which accepts 2009-10-06 14:05:57 +00:00
limits.h POSIX.1-2008 moved some constants from the XSI option to the Base. 2011-03-04 19:28:27 +00:00
link.h
locale.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00
Makefile HPET: create /dev/hpetN as a way to access HPET from userland. 2014-10-24 18:39:15 +00:00
malloc_np.h Update jemalloc to version 3.5.0. 2014-01-23 02:47:36 +00:00
malloc.h
memory.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
mk-osreldate.sh Set proper permissions on the generated osreldate.h file; a file readable 2013-09-30 21:01:04 +00:00
monetary.h Correctly expose xlocale functions if people include the headers in the wrong 2012-03-28 12:11:54 +00:00
mpool.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
mqueue.h POSIX requires sigevent to be visible after mqueue.h is included. 2012-09-10 05:12:45 +00:00
ndbm.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
netconfig.h
netdb.h Replace __const by const in all non-contributed source code. 2011-12-13 13:32:56 +00:00
nl_types.h Remove NetBSD Foundation clauses 3 & 4. They eliminated those clauses 2010-02-16 19:28:10 +00:00
nlist.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
nss.h
nsswitch.h Add capability to use a db version of services. It is enabled by 2010-04-04 08:31:03 +00:00
paths.h Assume that the -f argument is /dev/gpioc0 if it is not passed. 2013-09-17 11:48:47 +00:00
printf.h The register_printf_render_std() function expects regular string. 2012-07-04 17:35:07 +00:00
proc_service.h
pthread_np.h Introduce a non-portable function pthread_getthreadid_np(3) to retrieve 2011-02-07 21:26:46 +00:00
pthread.h Add lock annotations to the header files of our threading libraries. 2014-09-01 18:34:30 +00:00
pwd.h Replace our version of the pwcache(3) API with NetBSD's implementation. 2012-10-19 12:44:22 +00:00
ranlib.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
readpassphrase.h Sync with OpenBSD, primarily better signal and terminal handling. 2010-11-13 10:38:06 +00:00
regex.h Replace __const by const in all non-contributed source code. 2011-12-13 13:32:56 +00:00
res_update.h Update our stub resolver to final version of libbind. 2014-08-12 12:36:06 +00:00
resolv.h Update our stub resolver to final version of libbind. 2014-08-12 12:36:06 +00:00
runetype.h After r232498, programs built with -ansi or -std=c89 including <ctype.h> 2012-03-06 20:15:23 +00:00
search.h Add re-entrant versions of the hash functions based on the GNU api. 2014-07-21 15:22:48 +00:00
semaphore.h Use umtx to implement process sharable semaphore, to make this work, 2010-01-05 02:37:59 +00:00
setjmp.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
signal.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
spawn.h
stab.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
stdalign.h Add <stdalign.h> and <stdnoreturn.h>. 2011-12-25 20:51:40 +00:00
stdbool.h Remove unneeded guard. 2011-12-25 20:15:41 +00:00
stddef.h Add guards to ptrdiff_t definition in include/stddef.h 2014-08-21 15:10:10 +00:00
stdio.h include: Don't expose L_cuserid in strict C standard compliance mode. 2014-05-11 16:34:17 +00:00
stdlib.h Add bsearch_b to the libc map and the stdlib header. 2014-09-01 22:25:42 +00:00
stdnoreturn.h Simply disallow <stdnoreturn.h> to be used in combination with C++. 2012-01-03 23:05:23 +00:00
string.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
stringlist.h - sl_find does not modify 'name' 2013-04-23 13:03:03 +00:00
strings.h Add explicit_bzero(3) and its kernel counterpart. 2014-10-07 04:54:11 +00:00
sysexits.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
tar.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
termios.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
tgmath.h Roll back r271012 even more aggressively. 2014-09-05 05:36:32 +00:00
time.h Add CLOCK_PROCESS_CPUTIME_ID to <time.h>, to synchronize the CLOCK_* 2013-01-14 18:01:19 +00:00
timeconv.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
timers.h
ttyent.h Add a new flag to /etc/ttys: onifconsole. This is equivalent to "on" if the 2014-01-20 18:15:06 +00:00
uchar.h Fix <uchar.h> in for C++11. 2013-05-25 16:58:12 +00:00
ulimit.h
unistd.h unistd: drop argument names from setpgrp(3) prototype. 2014-09-19 18:13:56 +00:00
unwind.h Also the stop function should accept 64-bit exception class. 2010-09-30 03:16:35 +00:00
utime.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
utmpx.h Implement <utmpx.h>. 2010-01-13 17:29:55 +00:00
uuid.h
varargs.h
wchar.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
wctype.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00
wordexp.h
xlocale.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00