diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index e0048806afaa..b5c3db16c2b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -53,8 +53,17 @@ static void nbio_v2_3_remap_hdp_registers(struct amdgpu_device *adev) static u32 nbio_v2_3_get_rev_id(struct amdgpu_device *adev) { - u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0); + u32 tmp; + /* + * guest vm gets 0xffffffff when reading RCC_DEV0_EPF0_STRAP0, + * therefore we force rev_id to 0 (which is the default value) + */ + if (amdgpu_sriov_vf(adev)) { + return 0; + } + + tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0); tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK; tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT; |