From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: "Christian König" <ckoenig.leichtzumerken@gmail.com>
Cc: "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 21:55:47 +0200 [thread overview]
Message-ID: <d249c339-fa3f-4440-bbc8-c9cf08338174@physik.fu-berlin.de> (raw)
Hi Christian!
> Well let's face it AGP is a total headache to maintain and dead for at least 10+ years.
>
> We have a lot of x86 specific stuff in the architecture independent graphics memory management
> to get the caching right, abusing the DMA API on multiple occasions, need to distinct between
> AGP and driver specific page tables etc etc...
AGP isn't exclusively used on x86 but there are also a lot of PowerPC desktop machines (Apple
PowerMac, Pegasos etc) that employ AGP graphics.
> So the idea here is to just go ahead and remove the support from Radeon and Nouveau and
> then drop the necessary code from TTM.
> For Radeon this means that we just switch over to the driver specific page tables and
> everything should more or less continue to work.
>
> 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.
Thanks,
Adrian
> [1] https://cdimage.debian.org/cdimage/ports/2020-04-19/
--
.''`. 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
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next reply other threads:[~2020-05-11 20:02 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 19:55 John Paul Adrian Glaubitz [this message]
2020-05-11 20:05 ` [RFC] Remove AGP support from Radeon/Nouveau/TTM 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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d249c339-fa3f-4440-bbc8-c9cf08338174@physik.fu-berlin.de \
--to=glaubitz@physik.fu-berlin.de \
--cc=ckoenig.leichtzumerken@gmail.com \
--cc=debian-powerpc@lists.debian.org \
--cc=dri-devel@lists.freedesktop.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).