1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index 2e65447637c6..f8cee95d61cc 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -205,8 +205,19 @@ static const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg = {
 
 static void nbio_v7_4_detect_hw_virt(struct amdgpu_device *adev)
 {
-        if (is_virtual_machine())       /* passthrough mode exclus sriov mod */
-                adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
+        uint32_t reg;
+
+        reg = RREG32_SOC15(NBIO, 0, mmRCC_IOV_FUNC_IDENTIFIER);
+        if (reg & 1)
+                adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
+
+        if (reg & 0x80000000)
+                adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
+
+        if (!reg) {
+                if (is_virtual_machine())       /* passthrough mode exclus sriov mod */
+                        adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
+        }
 }
 
 static void nbio_v7_4_init_registers(struct amdgpu_device *adev)