* ibook sleep, NMI edge vs level trigger.
@ 2001-04-20 19:29 Conrad H Ziesler
2001-04-20 20:46 ` Benjamin Herrenschmidt
0 siblings, 1 reply; 2+ messages in thread
From: Conrad H Ziesler @ 2001-04-20 19:29 UTC (permalink / raw)
To: linuxppc-dev
i dunno if this is news to anyone, but apparently
(the source comment says "copied from OS9 code")
the NMI is masked and switched from edge to level triggered before
sleeping and unmasked and returned to edge triggered after wake.
is the low level sleep handler doing this correctly ?
refer to:
xnu-4-2/iokit/Drivers/platform/drvAppleNMI/AppleNMI.cpp
--conrad
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* Re: ibook sleep, NMI edge vs level trigger.
2001-04-20 19:29 ibook sleep, NMI edge vs level trigger Conrad H Ziesler
@ 2001-04-20 20:46 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 2+ messages in thread
From: Benjamin Herrenschmidt @ 2001-04-20 20:46 UTC (permalink / raw)
To: Conrad H Ziesler, linuxppc-dev
>
>i dunno if this is news to anyone, but apparently
>(the source comment says "copied from OS9 code")
>the NMI is masked and switched from edge to level triggered before
>sleeping and unmasked and returned to edge triggered after wake.
>
>is the low level sleep handler doing this correctly ?
>
>refer to:
>xnu-4-2/iokit/Drivers/platform/drvAppleNMI/AppleNMI.cpp
AFAIK, it's only done on desktop G4s.
Ben.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
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2001-04-20 19:29 ibook sleep, NMI edge vs level trigger Conrad H Ziesler
2001-04-20 20:46 ` Benjamin Herrenschmidt
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