From 75737cb4eb78c7f185e4700b4aa20cf7a3381aca Mon Sep 17 00:00:00 2001 From: "Xiangliang.Yu" Date: Fri, 10 Nov 2017 14:23:38 +0800 Subject: [PATCH] drm/amdgpu/gfx8: Fix compute ring failure after resetting Do ring clear before ring test, otherwise compute ring test will fail after gpu resetting. Still can't find the root cause, just workaround it. Signed-off-by: Xiangliang.Yu Acked-by: Monk Liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 2ddf126614da..96a3345e872e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -4877,9 +4877,6 @@ static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring) /* reset 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); } @@ -4954,6 +4951,13 @@ static int gfx_v8_0_kiq_resume(struct amdgpu_device *adev) /* Test KCQs */ for (i = 0; i < adev->gfx.num_compute_rings; i++) { ring = &adev->gfx.compute_ring[i]; + if (adev->in_gpu_reset) { + /* move reset ring buffer to here to workaround + * compute ring test failed + */ + ring->wptr = 0; + amdgpu_ring_clear_ring(ring); + } ring->ready = true; r = amdgpu_ring_test_ring(ring); if (r) -- 2.30.2