Am 26.04.23 um 23:21 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.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 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..b1c6fc24f65c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4651,14 +4651,14 @@ 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 {
+ if (amdgpu_in_reset(adev)) {
+ /* reset ring buffer */
+ ring->wptr = 0;
+ }
I think this needs to be done on resume as well.
Essentially we want to always start from 0 or otherwise the whatever is
in the ring will be executed first.
amdgpu_ring_clear_ring(ring);
Which would explain why we need that here as well.
Christian.
}
return 0;
