it requires to initialize HDP_NONSURFACE_BASE, so as to avoid using the value left by a previous VM under sriov scenario.
v2: it should not hurt baremetal, generalize it for both sriov and baremetal Signed-off-by: Emily Deng <emily.d...@amd.com> Signed-off-by: Tiecheng Zhou <tiecheng.z...@amd.com> --- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index be729e7..c221570 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1181,6 +1181,9 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev) tmp = RREG32_SOC15(HDP, 0, mmHDP_HOST_PATH_CNTL); WREG32_SOC15(HDP, 0, mmHDP_HOST_PATH_CNTL, tmp); + WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE, (adev->gmc.vram_start >> 8)); + WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE_HI, (adev->gmc.vram_start >> 40)); + /* After HDP is initialized, flush HDP.*/ adev->nbio_funcs->hdp_flush(adev, NULL); -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx