From: Frank Min <Frank.Min@xxxxxxx>
Add sriov capability detection for vega20, then can check if device is
virtual device.
Signed-off-by: Frank Min <Frank.Min at amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index 2e65447..f8cee95 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -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)
--
2.7.4
