[why] Passthrough case is treated as root bus and pcie_gen_mask is set as default value that does not support GEN 3 and GEN 4 for PCIe link speed. So PCIe link speed will be downgraded at smu hw init in passthrough condition
[how] Move get pci info after detect virtualization and check if it is passthrough case when set pcie_gen_mask Signed-off-by: Tong Liu01 <tong.li...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index a9d9bbe8586b..18c6e9872247 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3813,8 +3813,6 @@ int amdgpu_device_init(struct amdgpu_device *adev, DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base); DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size); - amdgpu_device_get_pcie_info(adev); - if (amdgpu_mcbp) DRM_INFO("MCBP is enabled\n"); @@ -3830,6 +3828,8 @@ int amdgpu_device_init(struct amdgpu_device *adev, /* detect hw virtualization here */ amdgpu_detect_virtualization(adev); + amdgpu_device_get_pcie_info(adev); + r = amdgpu_device_get_job_timeout_settings(adev); if (r) { dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n"); @@ -5589,7 +5589,7 @@ static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap; /* covers APUs as well */ - if (pci_is_root_bus(adev->pdev->bus)) { + if (pci_is_root_bus(adev->pdev->bus) && !amdgpu_passthrough(adev)) { if (adev->pm.pcie_gen_mask == 0) adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK; if (adev->pm.pcie_mlw_mask == 0) -- 2.34.1