On Thu, 2003-10-16 at 19:12, Dave Jones wrote: > 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.
ATI can optionally use kernel agpgart with Option "UseInternalAGPGART" "no"
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