Re: [PATCH 08/12] drm/amdgpu/gfx8: always restore kcq MQDs

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Am 27.04.23 um 17:27 schrieb Alex Deucher:
Always restore the MQD not just when we do a reset.
This allows us to move the MQD to VRAM if we want.

v2: always reset ring pointer as well (Christian)

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx> for this one and same for other hw generations.

---
  drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 5de44d7e92de..2ae7f167985f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4651,15 +4651,13 @@ static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring)
if (adev->gfx.mec.mqd_backup[mqd_idx])
  			memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation));
-	} else if (amdgpu_in_reset(adev)) { /* for GPU_RESET case */
-		/* reset MQD to a clean status */
+	} else {
+		/* restore MQD to a clean status */
  		if (adev->gfx.mec.mqd_backup[mqd_idx])
  			memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct vi_mqd_allocation));
  		/* reset ring buffer */
  		ring->wptr = 0;
  		amdgpu_ring_clear_ring(ring);
-	} else {
-		amdgpu_ring_clear_ring(ring);
  	}
  	return 0;
  }




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