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Commit a2045ee6 authored by Frank Min's avatar Frank Min Committed by Alex Deucher
Browse files

drm/amdgpu: add vega20 sriov capability detection 



Add sriov capability detection for vega20, then can check if device is
virtual device.

Signed-off-by: default avatarFrank Min <Frank.Min@amd.com>
Signed-off-by: default avatarXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent fd395547

drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c

+13 −2
Original line number Diff line number Diff line
@@ -205,9 +205,20 @@ static const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg = { 


static void nbio_v7_4_detect_hw_virt(struct amdgpu_device *adev)

{

	uint32_t reg;



	reg = RREG32_SOC15(NBIO, 0, mmRCC_IOV_FUNC_IDENTIFIER);

	if (reg & 1)

		adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;



	if (reg & 0x80000000)

		adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;



	if (!reg) {

		if (is_virtual_machine())	/* passthrough mode exclus sriov mod */

			adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;

	}

}



static void nbio_v7_4_init_registers(struct amdgpu_device *adev)

{