From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 19 Dec 2017 09:57:53 -0500
Subject: drm/amdgpu: use defines for mmBIF_IOV_FUNC_IDENTIFIER fields
Git-commit: 04a0d2d9a6ee9dad813efadc653a7708220f9de8
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Rather than magic numbers.

Reviewed-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/vi.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -455,11 +455,10 @@ static void vi_detect_hw_virtualization(
 	    adev->asic_type == CHIP_FIJI) {
 	       reg = RREG32(mmBIF_IOV_FUNC_IDENTIFIER);
 	       /* bit0: 0 means pf and 1 means vf */
-	       /* bit31: 0 means disable IOV and 1 means enable */
-	       if (reg & 1)
+	       if (REG_GET_FIELD(reg, BIF_IOV_FUNC_IDENTIFIER, FUNC_IDENTIFIER))
 		       adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
-
-	       if (reg & 0x80000000)
+	       /* bit31: 0 means disable IOV and 1 means enable */
+	       if (REG_GET_FIELD(reg, BIF_IOV_FUNC_IDENTIFIER, IOV_ENABLE))
 		       adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
 	}