On 04/30/ , Yifan Zhang wrote: > APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather > it is internal path w/ native atomic support. Set have_atomics_support > to true. > > Signed-off-by: Yifan Zhang <yifan1.zhang@xxxxxxx> Reviewed-by: Lang Yu <lang.yu@xxxxxxx> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index b57e7776055b..750eaffa81ba 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -3757,6 +3757,12 @@ int amdgpu_device_init(struct amdgpu_device *adev, > adev->have_atomics_support = ((struct amd_sriov_msg_pf2vf_info *) > adev->virt.fw_reserve.p_pf2vf)->pcie_atomic_ops_support_flags == > (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | PCI_EXP_DEVCAP2_ATOMIC_COMP64); > + /* APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather it is a > + * internal path natively support atomics, set have_atomics_support to true. > + */ > + else if ((adev->flags & AMD_IS_APU) && > + (adev->ip_versions[GC_HWIP][0] > IP_VERSION(9, 0, 0))) > + adev->have_atomics_support = true; > else > adev->have_atomics_support = > !pci_enable_atomic_ops_to_root(adev->pdev, > -- > 2.37.3 >
