Commit 8f177893 authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amdgpu: Unset baco dummy mode on nbio v7.9 



BACO dummy mode could be set under reset conditions and that affects
framebuffer access. Check If baco dummy mode is set, unset it if so.

Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Signed-off-by: default avatarLe Ma <le.ma@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: default avatarAsad Kamal <asad.kamal@amd.com>
Tested-by: default avatarAsad Kamal <asad.kamal@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ed6445f5

drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c

+18 −0
Original line number Diff line number Diff line
@@ -437,6 +437,24 @@ static void nbio_v7_9_init_registers(struct amdgpu_device *adev) 
			XCC_DOORBELL_FENCE__SHUB_SLV_MODE_MASK);



	}



	if (!amdgpu_sriov_vf(adev)) {

		u32 baco_cntl;

		for_each_inst(i, adev->aid_mask) {

			baco_cntl = RREG32_SOC15(NBIO, i, regBIF_BX0_BACO_CNTL);

			if (baco_cntl & (BIF_BX0_BACO_CNTL__BACO_DUMMY_EN_MASK |

					 BIF_BX0_BACO_CNTL__BACO_EN_MASK)) {

				baco_cntl &= ~(

					BIF_BX0_BACO_CNTL__BACO_DUMMY_EN_MASK |

					BIF_BX0_BACO_CNTL__BACO_EN_MASK);

				dev_dbg(adev->dev,

					"Unsetting baco dummy mode %x",

					baco_cntl);

				WREG32_SOC15(NBIO, i, regBIF_BX0_BACO_CNTL,

					     baco_cntl);

			}

		}

	}

}



static u64 nbio_v7_9_get_pcie_replay_count(struct amdgpu_device *adev)