Commit 12292519 authored by Jay Cornwall's avatar Jay Cornwall Committed by Alex Deucher
Browse files

drm/amdgpu: Implement doorbell self-ring for NBIO 7.4 



Fixes doorbell reflection on Vega20.

Change-Id: I0495139d160a9032dff5977289b1eec11c16f781
Signed-off-by: default avatarJay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1f66b7ea

drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c

+13 −0
Original line number Diff line number Diff line
@@ -93,7 +93,20 @@ static void nbio_v7_4_enable_doorbell_aperture(struct amdgpu_device *adev, 
static void nbio_v7_4_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,

							bool enable)

{

	u32 tmp = 0;



	if (enable) {

		tmp = REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_EN, 1) |

		      REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_MODE, 1) |

		      REG_SET_FIELD(tmp, DOORBELL_SELFRING_GPA_APER_CNTL, DOORBELL_SELFRING_GPA_APER_SIZE, 0);



		WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_LOW,

			     lower_32_bits(adev->doorbell.base));

		WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_BASE_HIGH,

			     upper_32_bits(adev->doorbell.base));

	}



	WREG32_SOC15(NBIO, 0, mmDOORBELL_SELFRING_GPA_APER_CNTL, tmp);

}



static void nbio_v7_4_ih_doorbell_range(struct amdgpu_device *adev,

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