Re: [PATCH] drm/i915: Fix SRC_COPY width on 830/845g

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Am 12.09.2014 08:37, schrieb Chris Wilson:
One small change I forgot to make in

commit c4d69da167fa967749aeb70bc0e94a457e5d00c1
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date:   Mon Sep 8 14:25:41 2014 +0100

     drm/i915: Evict CS TLBs between batches

was to update the copy width for the compact BLT copy instruction.

Reported-by: Thomas Richter <thor@xxxxxxxxxxxxxxxxx>
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Richter <thor@xxxxxxxxxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
  drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index d0156d6..45d70fd 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1386,7 +1386,7 @@ i830_emit_batchbuffer(struct i915_gem_request *rq,
  		 */
  		intel_ring_emit(ring, SRC_COPY_BLT_CMD | BLT_WRITE_RGBA);
  		intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_SRC_COPY | 4096);
-		intel_ring_emit(ring, DIV_ROUND_UP(len, 4096) << 16 | 1024);
+		intel_ring_emit(ring, DIV_ROUND_UP(len, 4096) << 16 | 4096);
  		intel_ring_emit(ring, cs_offset);
  		intel_ring_emit(ring, 4096);
  		intel_ring_emit(ring, offset);
Thanks Chris, this has done the trick! I get again a working display and a working GPU on my 830 machine.

Tested-by: Thomas Richter <thor@xxxxxxxxxxxxxxxxx>


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