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.zh...@amd.com>

Reviewed-by: Lang Yu <lang...@amd.com>

> ---
>  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
> 

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