| commit | bea6e27816f976132ff7ad7446c0e90406378f9b | |
| author | Sepherosa Ziehau <sephe@dragonflybsd.org> | |
| Wed, 29 Apr 2009 14:27:27 +0000 (29 22:27 +0800) | ||
| committer | Sepherosa Ziehau <sephe@dragonflybsd.org> | |
| Wed, 29 Apr 2009 14:49:47 +0000 (29 22:49 +0800) | ||
| tree | f89c03a49732017901d64fde91eed917ee4288bc | treesnapshot (tar.gz zip) |
| parent | 14a023b8d18ae518228cb3f1f22e93296717732e | commitdiff |
Add HPET cputimer.
HPET - High Precision Event Timers. Only main counter is used
currently. This cputimer should be faster than ACPI-fast24 and
ACPI-safe, so give it highest priority.
HPET is not enabled by default. You could add "hpet" to
debug.acpi.enabled to enable it.
Obtained-from: FreeBSD
Submitted-by: Dmitry Komissaroff <aunoor@gmail.com> w/ mod from me
Local change:
Try mapping 0x100 bytes HPET register space, if broken ACPI tables
are encountered (like one of my testing box); 0x100 is large enough
to cover the main counter.
HPET - High Precision Event Timers. Only main counter is used
currently. This cputimer should be faster than ACPI-fast24 and
ACPI-safe, so give it highest priority.
HPET is not enabled by default. You could add "hpet" to
debug.acpi.enabled to enable it.
Obtained-from: FreeBSD
Submitted-by: Dmitry Komissaroff <aunoor@gmail.com> w/ mod from me
Local change:
Try mapping 0x100 bytes HPET register space, if broken ACPI tables
are encountered (like one of my testing box); 0x100 is large enough
to cover the main counter.
| sys/dev/acpica5/Makefile | diffblobblamehistory | |
| sys/dev/acpica5/acpi_hpet.c | [new file with mode: 0644] | blob |
| sys/dev/acpica5/acpi_hpet.h | [new file with mode: 0644] | blob |
| sys/sys/systimer.h | diffblobblamehistory |