54e472ae96
85x also has a similar AGPBUSY# bit as gen3. Enable it to make sure vblank interrupts don't get dealyed during C3 state. There's also another bit which controls whether AGPBUSY# is asserted based on pending cacheable cycles and interrupts, or just based on pending commands in the ring and interrupts. Select the cacheable cycles mode since that seems to be the new way of doing things in 85x, and it does give slightly better C3 residency numbers with glxgears running. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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