freebsd-nq/sys/i386
Poul-Henning Kamp 24514292fa On PIIX4 based SMP systems use the PMTMR register for timecounting.
It is about 2.5 microseconds or roughly 3 times faster to use this
"PIIX" timecounter than the "i8254" timecounter.  Resolution is
also 3 times better.

The code cheats and don't register the PCI device, because other pieces
of code want to use it too.

Originally spotted by:  msmith
1999-09-20 07:52:39 +00:00
..
apm Handle CAPABILITIESCHANGE event. 1999-09-11 16:00:28 +00:00
bios Handle CAPABILITIESCHANGE event. 1999-09-11 16:00:28 +00:00
boot Try to win back the "removal of most crufty code" trophy from markm: 1999-09-01 11:32:52 +00:00
conf On PIIX4 based SMP systems use the PMTMR register for timecounting. 1999-09-20 07:52:39 +00:00
eisa $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
i386 On PIIX4 based SMP systems use the PMTMR register for timecounting. 1999-09-20 07:52:39 +00:00
ibcs2 This is what was "fdfix2.patch," a fix for fd sharing. It's pretty 1999-09-19 17:00:25 +00:00
include Make pmap_mapdev() deal with non-page-aligned requests. 1999-09-11 20:31:32 +00:00
isa Make if_ed work again on pci, isa, isapnp. The hack to make it work on 1999-09-20 05:48:16 +00:00
linux This is what was "fdfix2.patch," a fix for fd sharing. It's pretty 1999-09-19 17:00:25 +00:00
pci $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
svr4 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Makefile $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00