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| author | kib <kib@FreeBSD.org> | 2016-02-20 13:37:04 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2016-02-20 13:37:04 +0000 |
| commit | 9b01734b012a01764d2995c361ed8a153da472e5 (patch) | |
| tree | 2679ade09b0cb6e989ae0ba55bd645332a7f254c /sys/dev/acpica/acpivar.h | |
| parent | efb12984b6d52eac82dfc5e14fa4e55b23fc1685 (diff) | |
| download | FreeBSD-src-9b01734b012a01764d2995c361ed8a153da472e5.zip FreeBSD-src-9b01734b012a01764d2995c361ed8a153da472e5.tar.gz | |
Some BIOSes ACPI bytecode needs to take (sleepable) acpi mutex for
acpi_GetInteger() execution. Intel DMAR interrupt remapping code
needs to know UID of the HPET to properly route the FSB interrupts
from the HPET, even when interrupt remapping is disabled, and the code
is executed under some non-sleepable mutexes.
Cache HPET UIDs in the device softc at the attach time and provide
lock-less method to get UID, use the method from the dmar hpet
handling code instead of calling GetInteger().
Reported and tested by: Larry Rosenman <ler@lerctr.org>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Diffstat (limited to 'sys/dev/acpica/acpivar.h')
| -rw-r--r-- | sys/dev/acpica/acpivar.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpivar.h b/sys/dev/acpica/acpivar.h index 4f601c9..4df83d5 100644 --- a/sys/dev/acpica/acpivar.h +++ b/sys/dev/acpica/acpivar.h @@ -441,6 +441,8 @@ int acpi_wakeup_machdep(struct acpi_softc *sc, int state, int acpi_table_quirks(int *quirks); int acpi_machdep_quirks(int *quirks); +uint32_t hpet_get_uid(device_t dev); + /* Battery Abstraction. */ struct acpi_battinfo; |
