Reviewed-by: Xiangliang Yu <xiangliang...@amd.com>
> -----Original Message----- > From: amd-gfx [mailto:amd-gfx-boun...@lists.freedesktop.org] On Behalf > Of Alex Deucher > Sent: Tuesday, December 19, 2017 11:07 PM > To: amd-gfx@lists.freedesktop.org > Cc: Deucher, Alexander <alexander.deuc...@amd.com> > Subject: [PATCH 1/2] drm/amdgpu: only check > mmBIF_IOV_FUNC_IDENTIFIER on tonga/fiji > > We only support SR-IOV on tonga/fiji. Don't check this register on other VI > parts. > > Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> > --- > drivers/gpu/drm/amd/amdgpu/vi.c | 21 +++++++++++++-------- > 1 file changed, 13 insertions(+), 8 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c > b/drivers/gpu/drm/amd/amdgpu/vi.c index d9bb26322850..c59b37365e4d > 100644 > --- a/drivers/gpu/drm/amd/amdgpu/vi.c > +++ b/drivers/gpu/drm/amd/amdgpu/vi.c > @@ -449,14 +449,19 @@ static bool vi_read_bios_from_rom(struct > amdgpu_device *adev, > > static void vi_detect_hw_virtualization(struct amdgpu_device *adev) { > - uint32_t 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) > - adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF; > - > - if (reg & 0x80000000) > - adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV; > + uint32_t reg = 0; > + > + if (adev->asic_type == CHIP_TONGA || > + 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) > + adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF; > + > + if (reg & 0x80000000) > + adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV; > + } > > if (reg == 0) { > if (is_virtual_machine()) /* passthrough mode exclus sr-iov > mode */ > -- > 2.13.6 > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
