Date: Thu, 2 Dec 2004 08:07:13 +0000 (UTC) From: Nate Lawson <njl@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/acpica acpi.c src/sys/dev/pci pci.c Message-ID: <200412020807.iB287Dv4055285@repoman.freebsd.org>
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njl 2004-12-02 08:07:13 UTC
FreeBSD src repository
Modified files:
sys/dev/acpica acpi.c
sys/dev/pci pci.c
Log:
Turn ACPI and PCI devices off or to a lower power state in suspend and
back on again in resume. Override the default of D3 with the value the
BIOS specifies in _SxD, if present. Skip serial devices (PNP05xx) since
they seem to hang when set to D3 and may require special driver support.
Also, skip non-type 0 PCI devices (i.e., bridges) since our we don't yet
save/restore their config space and that seems to be necessary.
If this gives you trouble with suspend/resume, you can disable the new
ACPI and PCI power behavior separately with these tunables & sysctls:
debug.acpi.do_powerstate
hw.pci.do_powerstate
Approved by: imp (pci)
Tested by: acpi@ (numerous)
Revision Changes Path
1.194 +210 -3 src/sys/dev/acpica/acpi.c
1.269 +54 -15 src/sys/dev/pci/pci.c
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