On Thu, Oct 16, 2003 at 04:46:44PM -0400, John Dennis wrote:
> Does anybody know for the proprietary drivers (supplied by ATI and
> Nvidia) which pieces they replace and which pieces they expect to be
> there? The reason I'm asking is to understand the consequences of
> changing an API. I'm curious to the answer in general, but in this
> specific instance the api I'm worried about is between the agpgart
> kernel module and drm kernel module. If the agpgart kernel module
> modifies it's API will that break things for someone who installs a
> proprietary 3D driver? Do the proprietary drivers limit themselves to
> mesa driver and retain the existing kernel services assuming the IOCTL's
> are the same? Or do they replace the kernel drm drivers as well? If so
> do they manage AGP themselves, or do they use the systems agpgart
> driver? Do they replace the systems agpgart driver?
NVIDIA driver can optionally use the kernel agpgart, but also has its
own built-in. ATI always use their own agpgart afair.
Change the agpgart API, and they will likely break.
Dave
--
Dave Jones http://www.codemonkey.org.uk
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