From: Yifan Zha Date: Tue, 25 Oct 2022 08:55:05 +0000 (+0800) Subject: drm/amdgpu: Skip access GRBM_CNTL under SRIOV on gfx_v11 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=47a7470bb2ca2d2ccbd945082e5ebf0279a33fe5;p=linux.git drm/amdgpu: Skip access GRBM_CNTL under SRIOV on gfx_v11 [Why] GRBM_CNTL is a PF_only register on gfx_v11. RLCG interface will return "out of range" under SRIOV VF. [How] Skip access GRBM_CNTL under gfx_v11 SRIOV VF. Signed-off-by: Yifan Zha Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c index 443ce664b6630..f68e13b6282ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c @@ -1626,7 +1626,8 @@ static void gfx_v11_0_constants_init(struct amdgpu_device *adev) u32 tmp; int i; - WREG32_FIELD15_PREREG(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); + if (!amdgpu_sriov_vf(adev)) + WREG32_FIELD15_PREREG(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); gfx_v11_0_setup_rb(adev); gfx_v11_0_get_cu_info(adev, &adev->gfx.cu_info);