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For devices that conform to PCIe r3.0 and have a Link Capabilities 2 register, we test and report every bit in the Supported Link Speeds Vector field. For a device that supports both 2.5GT/s and 5.0GT/s, we set both DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in the returned mask. For pre-r3.0 devices, the Link Capabilities 0010b encoding (PCI_EXP_LNKCAP_SLS_5_0GB) means that both 5.0GT/s and 2.5GT/s are supported, so set both DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in this case as well. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Dave Airlie <airlied@redhat.com> |
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