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drm/amdgpu: add vega20 sriov capability detection 

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

Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Frank Min 2018-04-27 03:44:11 +08:00 committed by Alex Deucher
parent fd39554792
commit a2045ee669
1 changed files with 13 additions and 2 deletions
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15
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
View File

@ -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)
{
if (is_virtual_machine()) /* passthrough mode exclus sriov mod */
adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
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)