Commit af7828fb authored by Yifan Zhang's avatar Yifan Zhang Committed by Alex Deucher
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drm/amdgpu: set gfx9 onwards APU atomics support to be true 



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: default avatarYifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: default avatarLang Yu <lang.yu@amd.com>
Acked-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 476ac50f

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+6 −0
Original line number Diff line number Diff line
@@ -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,