From: Alex Deucher <alexdeucher@gmail.com>
To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: "Christian König" <ckoenig.leichtzumerken@gmail.com>,
"debian-powerpc@lists.debian.org"
<debian-powerpc@lists.debian.org>,
"Maling list - DRI developers" <dri-devel@lists.freedesktop.org>
Subject: Re: [RFC] Remove AGP support from Radeon/Nouveau/TTM
Date: Mon, 11 May 2020 16:46:19 -0400 [thread overview]
Message-ID: <CADnq5_MQWJF5MB-1JyVeXCU8EAK2P-g+P13dR7eRKLkP8YmFqA@mail.gmail.com> (raw)
In-Reply-To: <21a0d2ba-c27d-6b12-678e-89c04dc64a82@physik.fu-berlin.de>
On Mon, May 11, 2020 at 4:41 PM John Paul Adrian Glaubitz
<glaubitz@physik.fu-berlin.de> wrote:
>
> 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)?
It was disabled 2 years ago:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=037d1a66ae640ca2723f47c0115ffa9e603699b3
Alex
>
> Thanks,
> Adrian
>
> --
> .''`. John Paul Adrian Glaubitz
> : :' : Debian Developer - glaubitz@debian.org
> `. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
> `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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next prev parent reply other threads:[~2020-05-11 20:46 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 19:55 [RFC] Remove AGP support from Radeon/Nouveau/TTM John Paul Adrian Glaubitz
2020-05-11 20:05 ` Alex Deucher
2020-05-11 20:25 ` Rui Salvaterra
2020-05-11 20:51 ` Alex Deucher
2020-05-12 7:57 ` Michel Dänzer
2020-05-12 9:21 ` Rui Salvaterra
2020-05-12 9:40 ` Karoly Balogh (Charlie/SGR)
2020-05-12 13:22 ` Alex Deucher
2020-05-12 16:37 ` Daniel Vetter
2020-05-12 17:02 ` Rui Salvaterra
2020-05-12 18:21 ` Alex Deucher
2020-05-12 20:12 ` Dave Airlie
2020-05-13 7:26 ` Christian König
2020-05-12 18:22 ` Alex Deucher
2020-05-13 7:19 ` Daniel Vetter
2020-05-13 7:55 ` Christian König
2020-05-13 10:25 ` Daniel Vetter
2020-05-13 9:28 ` Rui Salvaterra
2020-05-13 10:26 ` Michel Dänzer
2020-05-13 10:29 ` Daniel Vetter
2020-05-13 10:32 ` Michel Dänzer
2020-05-13 10:39 ` Rui Salvaterra
2020-05-13 10:57 ` Michel Dänzer
2020-05-13 11:07 ` Rui Salvaterra
2020-05-13 13:44 ` Christian Zigotzky
2020-05-13 14:01 ` John Paul Adrian Glaubitz
2020-05-13 14:01 ` Rui Salvaterra
2020-05-13 20:19 ` Bertrand Dekoninck
2020-05-13 20:36 ` Rui Salvaterra
2020-05-11 20:41 ` John Paul Adrian Glaubitz
2020-05-11 20:46 ` Alex Deucher [this message]
2020-05-11 21:50 ` John Paul Adrian Glaubitz
2020-05-12 7:43 ` Christian König
2020-05-11 20:12 ` Christian König
2020-05-11 20:24 ` John Paul Adrian Glaubitz
2020-05-11 20:48 ` Gerhard Pircher
2020-05-12 5:04 ` David VANTYGHEM
2020-05-12 9:20 ` John Paul Adrian Glaubitz
-- strict thread matches above, loose matches on Subject: below --
2020-05-11 17:17 Christian König
2020-05-11 20:14 ` Al Dunsmuir
2020-05-11 20:27 ` Alex Deucher
2020-05-11 20:43 ` Dave Airlie
2020-05-11 20:56 ` Al Dunsmuir
2020-05-12 8:11 ` Christian König
2020-05-11 20:59 ` Emil Velikov
2020-05-11 20:46 ` Al Dunsmuir
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