Commit d02692ae authored by Hawking Zhang's avatar Hawking Zhang Committed by Alex Deucher
Browse files

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: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: default avatarFeifei Xu <Feifei.Xu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b7daed1b

drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c

+3 −0
Original line number Diff line number Diff line
@@ -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