Commit 25aebfc3 authored by Eric Anholt's avatar Eric Anholt Committed by Keith Packard

drm/i915: Add support for fence registers on Ivybridge.

The registers are the same as on Sandybridge.  Fixes scrambled display
in X when it does software drawing to the GTT, and scans the results
out as tiled.
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Reviewed-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarKeith Packard <keithp@keithp.com>
parent 10ed13e4
......@@ -2673,6 +2673,7 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj,
update:
obj->tiling_changed = false;
switch (INTEL_INFO(dev)->gen) {
case 7:
case 6:
ret = sandybridge_write_fence_reg(obj, pipelined);
break;
......@@ -2706,6 +2707,7 @@ i915_gem_clear_fence_reg(struct drm_device *dev,
uint32_t fence_reg = reg - dev_priv->fence_regs;
switch (INTEL_INFO(dev)->gen) {
case 7:
case 6:
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + fence_reg*8, 0);
break;
......
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