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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-24 21:15:47 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-10-29 11:15:07 +0100 |
| commit | a00b10c360b35d6431a94cbf130a4e162870d661 (patch) | |
| tree | e1c06b90d161bc81e8d2c819da3b676f75527dda /drivers/gpu/drm/i915/i915_dma.c | |
| parent | 7465378fd7c681f6cf2b74b3494c4f0991d8c8ac (diff) | |
| download | blackbird-op-linux-a00b10c360b35d6431a94cbf130a4e162870d661.tar.gz blackbird-op-linux-a00b10c360b35d6431a94cbf130a4e162870d661.zip | |
drm/i915: Only enforce fence limits inside the GTT.
So long as we adhere to the fence registers rules for alignment and no
overlaps (including with unfenced accesses to linear memory) and account
for the tiled access in our size allocation, we do not have to allocate
the full fenced region for the object. This allows us to fight the bloat
tiling imposed on pre-i965 chipsets and frees up RAM for real use. [Inside
the GTT we still suffer the additional alignment constraints, so it doesn't
magic allow us to render larger scenes without stalls -- we need the
expanded GTT and fence pipelining to overcome those...]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index dddca007912a..00d8fb3e989f 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -770,6 +770,9 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_HAS_BLT: value = HAS_BLT(dev); break; + case I915_PARAM_HAS_RELAXED_FENCING: + value = 1; + break; default: DRM_DEBUG_DRIVER("Unknown parameter %d\n", param->param); |
