http://bugzilla.kernel.org/show_bug.cgi?id=7787
------- Additional Comments From [EMAIL PROTECTED] 2007-03-28 15:18 -------
Looking over Patrick's DSDT for uses of OPSYS...
There is a _WAK SMM hook that _OSI "Linux" will trigger
that Windows will not. Does this machine
suspend to ram, and does it restore video on resume?
Vista uses a mutex when talking to brighness control
where others do not -- unclear why
Vista has some EC hooks that XP does not have
_STA for the HPET will say it is not present for OSI Linux
and will say it is present for Windows
WMI hooks are not present for Vista, but are otherwise present
-----------
Scope (\_SB)
Method (_INI, 0, NotSerialized)
Store (0x07D0, OSYS)
If (_OSI ("Linux"))
Store (0x03E8, OSYS)
# unclear why this is here
# There are no tests for OSYS 038E8 in the DSDT
Else
Store (0x07D1, OSYS)
# 0x07D1 = any _OSI enabled OS besides Linux
If (_OSI ("Windows 2001 SP2"))
Store (0x07D2, OSYS)
# 07D3 = WinXP SP2
If (_OSI ("Windows 2001.1"))
Store (0x07D3, OSYS)
# 07D4 = WinServer2003
If (_OSI ("Windows 2001.1 SP1"))
Store (0x07D4, OSYS)
# 07D6 = WinServer2003 SP1
If (_OSI ("Windows 2006"))
Store (0x07D6, OSYS)
# WinVista
...
Method (_WAK, 1, NotSerialized)
{
If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04)))
{
If (And (CFGD, 0x01000000))
{
If (LAnd (And (CFGD, 0xF0), LEqual (OSYS, 0x07D1)))
# non-Linux _OSI enabled OS traps to SMM -- why?
# could this be a hook for video re-post on resume?
{
TRAP (0x3D)
}
}
}
...
If (LEqual (OSYS, 0x07D2))
# Windows XP SP2 has a uniq PPC notify on _WAK
{
If (And (CFGD, 0x01))
{
If (LGreater (\_PR.CPU0._PPC, 0x00))
{
Subtract (\_PR.CPU0._PPC, 0x01, \_PR.CPU0._PPC)
PNOT ()
Add (\_PR.CPU0._PPC, 0x01, \_PR.CPU0._PPC)
PNOT ()
}
Else
{
Add (\_PR.CPU0._PPC, 0x01, \_PR.CPU0._PPC)
PNOT ()
Subtract (\_PR.CPU0._PPC, 0x01, \_PR.CPU0._PPC)
PNOT ()
}
}
}
If (LEqual (OSYS, 0x07D6))
# Windows Vista gets a different EC notify
{
If (\_SB.PCI0.LPCB.EC0.MBTB)
{
Notify (\_SB.PCI0.LPCB.EC0.MBTN, 0x02)
}
}
...
Device (PCI0)
Device (PEGP)
Device (VGA)
Device (LCD)
Method (_BCM, 1, NotSerialized)
If (LEqual (OSYS, 0x07D6))
# Windows Vista uses a mutex in brightness control that others do not
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
Store (Local1, \_SB.PCI0.LPCB.EC0.BLVL)
Release (\_SB.PCI0.LPCB.EC0.MUT1)
}
Method (_BQC, 0, NotSerialized)
{
If (LEqual (OSYS, 0x07D6))
# Windows Vista
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
Store (\_SB.PCI0.LPCB.EC0.BLVL, Local0)
Release (\_SB.PCI0.LPCB.EC0.MUT1)
}
Device (GFX0)
...
Device (DD04)
Method (_BCM, 1, NotSerialized)
...
If (LEqual (OSYS, 0x07D6))
# Windows Vista
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
Store (Local1, \_SB.PCI0.LPCB.EC0.BLVL)
Release (\_SB.PCI0.LPCB.EC0.MUT1)
}
}
Method (_BQC, 0, NotSerialized)
{
If (LEqual (OSYS, 0x07D6))
# Windows Vista
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
Store (\_SB.PCI0.LPCB.EC0.BLVL, Local0)
Release (\_SB.PCI0.LPCB.EC0.MUT1)
}
...
Device (EC0)
{
Name (_HID, EisaId ("PNP0C09"))
# Embedded Controller
...
Name (_GPE, 0x17)
Name (SEL0, 0xF0)
Name (BFLG, 0x00)
Method (_REG, 2, NotSerialized)
{
...
If (\_SB.ECOK)
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
If (LEqual (OSYS, 0x07D6))
# Windows Vista has a specific EC flag here
{
Store (One, \_SB.PCI0.LPCB.EC0.OSTP)
\_SB.PHSR (0x0D, 0x00)
}
Else
{
Store (Zero, \_SB.PCI0.LPCB.EC0.OSTP)
}
Store (0x03, \_SB.PCI0.LPCB.EC0.RG59)
Store (\_SB.CIRE, \_SB.PCI0.LPCB.EC0.CIRE)
Store (\_SB.PHSR (0x05, 0x00), DOFF)
Store (\_SB.PCI0.LPCB.EC0.ACDF, \PWRS)
If (LEqual (OSYS, 0x07D6))
{
# Windows Vista
Store (0x3C, \_SB.PCI0.LPCB.EC0.VTMP)
}
Release (\_SB.PCI0.LPCB.EC0.MUT1)
}
}
...
Device (HPET)
{
Name (_HID, EisaId ("PNP0103"))
Method (_STA, 0, NotSerialized)
{
If (LGreaterEqual (OSYS, 0x07D1))
# All non-Linux _OSI enabled OS: HPET present
{
If (HPAE)
{
Return (0x0F)
}
# present+enabled+ui+functioning
}
Else
{
# else linux and non _OSI
If (HPAE)
{
Return (0x0B)
# not present
}
}
Return (0x00)
}
...
Device (AMW0)
{
Name (_HID, "*PNP0C14")
Name (_UID, 0x00)
Method (_STA, 0, NotSerialized)
{
If (LEqual (OSYS, 0x07D6))
# Windows Vista
{
Return (Zero)
# WMI not present
}
Else
{
# non-Windows Vista - WMI present
Return (0x0F)
}
}
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