From: Daniel Vetter <daniel@ffwll.ch>
To: "Zou, Nanhai" <nanhai.zou@intel.com>
Cc: Intel GFX <intel-gfx@lists.freedesktop.org>,
"Anholt, Eric" <eric.anholt@intel.com>
Subject: Re: [PATCH 1/4] introduce intel_ring_buffer structure
Date: Fri, 14 May 2010 17:03:24 +0200 [thread overview]
Message-ID: <20100514150324.GE3413@viiv.ffwll.ch> (raw)
In-Reply-To: <20100514095114.GC3413@viiv.ffwll.ch>
Hi all,
On Fri, May 14, 2010 at 11:51:14AM +0200, Daniel Vetter wrote:
> So please explain the technical reasons we need this rather complex beast
> of code in the kernel?
Ok, I owe you my apologies (and a beer). I've read through the HD docs and
it looks like bsd decoding for avc/vc1 can't be done without the bsd
command stream. What a pain.
I'm currently crawling through the docs. It looks like we also need a new
gpu domain (something like I915_GEM_DOMAIN_BSD) in addition to a new
execution domain to properly support flushing and coherency. This way
round my concerns about userspace synchronization and the flush-both-rings
semantics would be void, too.
Yours, Daniel
--
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48
next prev parent reply other threads:[~2010-05-14 15:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-06 1:20 [PATCH 1/4] introduce intel_ring_buffer structure Zou Nan hai
2010-05-06 1:20 ` [PATCH 2/4] convert render engine to use intel_ring_buffer Zou Nan hai
2010-05-06 1:20 ` [PATCH 3/4] add BSD ring buffer support Zou Nan hai
2010-05-06 1:20 ` [PATCH 4/4] adapt intel_ring_buffer into gem Zou Nan hai
2010-05-07 21:34 ` [PATCH 1/4] introduce intel_ring_buffer structure Eric Anholt
2010-05-08 18:15 ` Thomas Bächler
2010-05-11 22:24 ` Daniel Vetter
2010-05-14 1:39 ` Zou, Nanhai
2010-05-14 9:51 ` Daniel Vetter
2010-05-14 15:03 ` Daniel Vetter [this message]
2010-05-17 1:59 ` Zou, Nanhai
2010-05-17 17:52 ` Daniel Vetter
2010-05-14 17:43 ` Owain Ainsworth
2010-05-17 1:43 ` Zou, Nanhai
2010-05-17 17:42 ` Daniel Vetter
2010-05-18 2:20 ` Zou, Nanhai
2010-05-18 16:19 ` Simon Farnsworth
2010-05-19 1:09 ` Zou, Nanhai
2010-05-19 9:00 ` Simon Farnsworth
2010-05-19 16:54 ` Eric Anholt
2010-05-19 17:33 ` Simon Farnsworth
-- strict thread matches above, loose matches on Subject: below --
2010-05-05 3:17 Zou Nan hai
2010-05-05 18:23 ` Daniel Vetter
2010-05-06 2:25 ` Zou, Nanhai
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