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

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
......@@ -205,8 +205,19 @@ 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)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment