From d02692ae0d538598e9ef970dabfd29620055b18b Mon Sep 17 00:00:00 2001 From: Hawking Zhang Date: Tue, 22 Dec 2020 15:55:35 +0800 Subject: drm/amdgpu: bypass hdp read cache invalidation for aldebaran (v2) hdp read cache is removed in aldebaran. don't issue an mmio write or write data packet to hardware. v2: rebase Signed-off-by: Hawking Zhang Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c') diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c index e46621fed5b9..edbd35d293eb 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c @@ -49,6 +49,9 @@ static void hdp_v4_0_flush_hdp(struct amdgpu_device *adev, static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev, struct amdgpu_ring *ring) { + if (adev->asic_type == CHIP_ALDEBARAN) + return; + if (!ring || !ring->funcs->emit_wreg) WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1); else -- cgit v1.2.3