CVS log for src/sys/dev/pci/agpvar.h

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Default branch: MAIN
Current tag: yamt-nfs-mp-base

Revision 1.16 / (download) - annotate - [select for diffs], Fri Feb 22 19:47:06 2008 UTC (16 years, 1 month ago) by drochner
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-nfs-mp-base2, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, matt-armv6-nbase, keiichi-mipv6-nbase, keiichi-mipv6-base, hpcarm-cleanup-nbase, hpcarm-cleanup-base, ad-socklock-base1
Branch point for: yamt-pf42, yamt-nfs-mp, wrstuden-revivesa
Changes since 1.15: +7 -1 lines
Diff to previous 1.15 (colored)

Add a horrible hack to allow the DRM driver to get at the bus_space_handle
allocated by the AGP driver in the case of Intel chipset graphics.
This is different from the patch by Yorick Hardy circulated a while ago
in that it doesn't change the semantics of reference counting within
the (3rd-party) DRM code -- it just bypasses it.
Needless to say that it is uglier, but it eases future updates to
the DRM code because the change there is just 2 LOC.

Imo, a cleaner solution for all that would be to attach "agp" to "vga"
in the intel chipset graphics case, which better reflects how the hardware
is structured. This would still need a hack to the DRM code, but
it would be confined to childs of the "vga" device, without need for
global variables.
Since there is a variety of intel chipsets with AGP and/or builtin
graphics options, this would need a considerable testing effort.

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