[TIGON3]: Detect and record PCI Express.

drivers/net/tg3.c

@@ -7002,6 +7002,9 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 	tp->pci_hdr_type     = (cacheline_sz_reg >> 16) & 0xff;
 	tp->pci_bist         = (cacheline_sz_reg >> 24) & 0xff;
 
+	if (pci_find_capability(tp->pdev, PCI_CAP_ID_EXP) != 0)
+		tp->tg3_flags2 |= TG3_FLG2_PCI_EXPRESS;
+
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 &&
 	    tp->pci_lat_timer < 64) {
 		tp->pci_lat_timer = 64;

drivers/net/tg3.h

@@ -1967,6 +1967,7 @@ struct tg3 {
 #define TG3_FLG2_PHY_ADC_BUG		0x00000040
 #define TG3_FLG2_PHY_5704_A0_BUG	0x00000080
 #define TG3_FLG2_PHY_BER_BUG		0x00000100
+#define TG3_FLG2_PCI_EXPRESS		0x00000200
 
 	u32				split_mode_max_reqs;
 #define SPLIT_MODE_5704_MAX_REQ		3