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Subject: Re:
From: Justin Hibbits <jrh29@alumni.cwru.edu>
To: Alexey Dokuchaev <danfe@freebsd.org>
Cc: "Herminio Hernandez, Jr." <herminio.hernandezjr@gmail.com>, 
 FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
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On Wed, Aug 5, 2015 at 11:58 AM, Alexey Dokuchaev <danfe@freebsd.org> wrote:
> On Wed, Aug 05, 2015 at 11:26:37AM -0700, Justin Hibbits wrote:
>> Try adding the following line into the card's Section "Device" of xorg.conf:
>>
>>     Option  "NoAccel" "true"
>>
>> I needed to add this option on my PowerBooks, with ATI graphics, using
>> the xf86-video-ati-ums driver.
>
> Speaking of Apple iBooks/PowerBooks, and given than ATI (AMD) cards are
> currently one of the best supported in post-KMS world, are there chances
> to get them fully accelerated working in the foreseeable future?
>
> ./danfe

I *think* all that's needed is atomic64 emulation.  I had written a
patch implementing them, but it utterly failed to compile for most
architectures.  If I didn't have to worry about userspace or the
opensolaris atomic64 emulation, it wouldn't be too difficult.  Anyone
else wants a crack at it, feel free.

- Justin