Jean-Sebastien Pedron hat soeben seinem Radeon KMS Video-Treiber in 10-CURRENT committet. Viel zu sagen gibt es dazu nicht. Er mag ein wenig experimentell sein und einige Dinge mögen nicht funktionieren, aber es ist besser als gar kein Treiber. 

Code:
Author: dumbbell
Date: Sun Aug 25 19:37:15 2013
New Revision: 254885
URL: http://svnweb.freebsd.org/changeset/base/254885
Log:
drm/radeon: Import the Radeon KMS driver
This driver is based on Linux 3.8 and a previous effort by kan@.
More informations about this project can be found on the FreeBSD wiki:
https://wiki.freebsd.org/AMD_GPU
The driver is split into:
sys/dev/drm2:
The driver sources.
sys/modules/drm2/radeonkmw:
The driver main kernel module's Makefile.
sys/modules/drm2/radeonkmsfw:
All firmware kernel module Makefiles. There's one directory and one
Makefile for each firmware.
sys/contrib/dev/drm2/radeonkmsfw:
All firmware binary sources.
tools/tools/drm/radeon
Tools to update firmwares or regenerate some headers.
Merging the driver to FreeBSD 9.x may be possible but not a priority for
now.