PCI: Add decoding for 16 GT/s link speed
PCIe 4.0 defines the 16.0 GT/s link speed. Links can run at that speed
without any Linux changes, but previously their sysfs "max_link_speed" and
"current_link_speed" files contained "Unknown speed", not the expected
"16.0 GT/s".
Add decoding for the new 16 GT/s link speed.
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
[bhelgaas: add PCI_EXP_LNKCAP2_SLS_16_0GB]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Dongdong Liu <liudongdong3@huawei.com>
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 024a1be..8043a59 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -256,6 +256,7 @@ enum pci_bus_speed {
PCIE_SPEED_2_5GT = 0x14,
PCIE_SPEED_5_0GT = 0x15,
PCIE_SPEED_8_0GT = 0x16,
+ PCIE_SPEED_16_0GT = 0x17,
PCI_SPEED_UNKNOWN = 0xff,
};