PCI: Add support for reporting PCIe 3.0 speeds

Add the 8.0 GT/s speed.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/probe.c

@@ -416,7 +416,7 @@ static unsigned char pcie_link_speed[] = {
 	PCI_SPEED_UNKNOWN,		/* 0 */
 	PCIE_SPEED_2_5GT,		/* 1 */
 	PCIE_SPEED_5_0GT,		/* 2 */
-	PCI_SPEED_UNKNOWN,		/* 3 */
+	PCIE_SPEED_8_0GT,		/* 3 */
 	PCI_SPEED_UNKNOWN,		/* 4 */
 	PCI_SPEED_UNKNOWN,		/* 5 */
 	PCI_SPEED_UNKNOWN,		/* 6 */

drivers/pci/slot.c

@@ -71,6 +71,7 @@ static char *pci_bus_speed_strings[] = {
 	"133 MHz PCI-X 533",	/* 0x13 */
 	"2.5 GT/s PCIe",	/* 0x14 */
 	"5.0 GT/s PCIe",	/* 0x15 */
+	"8.0 GT/s PCIe",	/* 0x16 */
 };
 
 static ssize_t bus_speed_read(enum pci_bus_speed speed, char *buf)

include/linux/pci.h

@@ -210,6 +210,7 @@ enum pci_bus_speed {
 	PCI_SPEED_133MHz_PCIX_533	= 0x13,
 	PCIE_SPEED_2_5GT		= 0x14,
 	PCIE_SPEED_5_0GT		= 0x15,
+	PCIE_SPEED_8_0GT		= 0x16,
 	PCI_SPEED_UNKNOWN		= 0xff,
 };