Ping? On Thu, May 16, 2024 at 11:42 AM Alex Deucher <alexander.deucher@xxxxxxx> wrote: > > Use current speed/width on devices which don't support > dynamic PCIe switching. > > Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3289 > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 19 ++++++++++++------- > 1 file changed, 12 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index e72e774d17e6a..f0011dac589d2 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -5946,13 +5946,18 @@ static void amdgpu_device_partner_bandwidth(struct amdgpu_device *adev, > *speed = PCI_SPEED_UNKNOWN; > *width = PCIE_LNK_WIDTH_UNKNOWN; > > - while ((parent = pci_upstream_bridge(parent))) { > - /* skip upstream/downstream switches internal to dGPU*/ > - if (parent->vendor == PCI_VENDOR_ID_ATI) > - continue; > - *speed = pcie_get_speed_cap(parent); > - *width = pcie_get_width_cap(parent); > - break; > + if (amdgpu_device_pcie_dynamic_switching_supported(adev)) { > + while ((parent = pci_upstream_bridge(parent))) { > + /* skip upstream/downstream switches internal to dGPU*/ > + if (parent->vendor == PCI_VENDOR_ID_ATI) > + continue; > + *speed = pcie_get_speed_cap(parent); > + *width = pcie_get_width_cap(parent); > + break; > + } > + } else { > + /* use the current speeds rather than max if switching is not supported */ > + pcie_bandwidth_available(adev->pdev, NULL, speed, width); > } > } > > -- > 2.45.0 >
