256dw for the header are probably not enough.

Since we now uses NOPs for the CE/DE sync we only need 256dw for that alone. I suggest to raise that to 512.


Christian.

Am 15.09.2016 um 00:24 schrieb Andy Furniss:
This has just gone into drm-next-4.9-wip and caused lots of logging noise.

Seems to work OK though.

Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_0_ring_emit_fence_gfx [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected!
Sep 14 23:18:38 ph4 last message repeated 11 times
Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_ring_emit_sb [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_ring_emit_sb [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:amdgpu_ring_insert_nop [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected!
Sep 14 23:18:38 ph4 last message repeated 10 times
Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_0_ring_emit_ib_gfx [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_0_ring_emit_ib_gfx [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_0_ring_emit_hdp_invalidate [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected!
Sep 14 23:18:38 ph4 last message repeated 4 times
Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_0_ring_emit_fence_gfx [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected!
Sep 14 23:18:38 ph4 last message repeated 11 times
Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_ring_emit_sb [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:gfx_v8_ring_emit_sb [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected! Sep 14 23:18:38 ph4 kernel: [drm:amdgpu_ring_insert_nop [amdgpu]] *ERROR* amdgpu: writing more dwords to the ring than expected!
Sep 14 23:18:38 ph4 last message repeated 10 times

Monk Liu wrote:
Change-Id: Ie3e4587ed49c487c562f45a99f236a76727ace1e
Signed-off-by: Monk Liu <monk....@amd.com>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 029ee79..6ad45fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -151,7 +151,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
          return -EINVAL;
      }

-    r = amdgpu_ring_alloc(ring, 256 * num_ibs);
+    r = amdgpu_ring_alloc(ring, 256 + (num_ibs << 4));
      if (r) {
          dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
          return r;


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