[RFC] Remove AGP support from Radeon/Nouveau/TTM

[John Paul Adrian Glaubitz]

On 5/11/20 10:05 PM, Alex Deucher wrote:
>>> For Nouveau I'm not 100% sure, but from the code it of hand looks like we can do it similar to Radeon.
>>>
>>> Please comment what you think about this.
>>
>> I would be against such a move as AGP graphics is still used by people running the powerpc
>> and ppc64 Debian ports on their vintage hardware [1].
>>
>> I have also CC'ed the debian-powerpc mailing list so that other users can voice their
>> opinion.
> 
> Note there is no loss of functionality here, at least on radeon
> hardware.  It just comes down to which MMU gets used for access to
> system memory, the AGP MMU on the chipset or the MMU built into the
> GPU.  On powerpc hardware, AGP has been particularly unstable, and
> IIRC, AGP has been disabled by default on radeon on powerpc for a
> while.
Do you have a code reference at hand for this bit of information (AGP
being disabled on Macs)?

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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