Acked-by: Alex Deucher <[email protected]> ________________________________ From: amd-gfx <[email protected]> on behalf of HaiJun Chang <[email protected]> Sent: Tuesday, October 29, 2019 5:18 AM To: [email protected] <[email protected]> Cc: Chang, HaiJun <[email protected]> Subject: [PATCH] drm/amdgpu: fix gfx VF FLR test fail on navi
Cp wptr in wb buffer is outdated after VF FLR. The outdated wptr may cause cp to execute unexpected packets. Reset cp wptr in wb buffer. Signed-off-by: HaiJun Chang <[email protected]> --- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index d126d66..13363f2 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -3107,6 +3107,7 @@ static int gfx_v10_0_gfx_init_queue(struct amdgpu_ring *ring) memcpy(mqd, adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS], sizeof(*mqd)); /* reset the ring */ ring->wptr = 0; + adev->wb.wb[ring->wptr_offs] = 0; amdgpu_ring_clear_ring(ring); #ifdef BRING_UP_DEBUG mutex_lock(&adev->srbm_mutex); -- 2.7.4 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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