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drm/amdgpu: use defines for mmBIF_IOV_FUNC_IDENTIFIER fields 

Rather than magic numbers.

Reviewed-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-12-19 09:57:53 -05:00
parent 57ad33a307
commit 04a0d2d9a6
1 changed files with 3 additions and 4 deletions
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7
drivers/gpu/drm/amd/amdgpu/vi.c
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@ -455,11 +455,10 @@ static void vi_detect_hw_virtualization(struct amdgpu_device *adev)
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;
}