From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joonyoung Shim <jy0922.shim@samsung.com>
Subject: Re: [PATCH 09/10] drm/exynos: add G2D driver
Date: Thu, 15 Mar 2012 20:05:49 +0900
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To: Dave Airlie <airlied@gmail.com>
Cc: Inki Dae <inki.dae@samsung.com>, kyungmin.park@samsung.com, sw0312.kim@samsung.com, dri-devel@lists.freedesktop.org
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On 03/15/2012 07:50 PM, Dave Airlie wrote:
>> G2D is a 2D graphic accelerator that supports Bit Block Transfer. This
>> G2D driver is exynos drm specific and supports only exynos4x12 series.
>> user application fills command set in cmdlist and once dma start request
>> these cmdlists are parsed and performed by dma.
> Where is this block documented or a pointer to the corresponding open
> userspace user code?
>
> Again the ioctls look like they need to be depointered and use __u64.
>
> It would be nice if you could document how the command stream and engine work.
>
> How does userspace pass addresses to it? straight or via gem objects?
> how does it
> stop userspace blt to places it shouldn't etc.
>
> I'm getting the feeling this accel enabled driver needs a lot more of
> a commit message
> and lot more documentation on what it can be used for.

OK, i will update the more documentation and simple user space program.

Thanks.