pci_regs: define LNKSTA2 pcie cap + bits.

We need these for detecting the max link speed for drm drivers.

Acked-by: Bjorn Helgaas <bhelgass@google.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index 4b608f543412..7f04132eb02d 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -521,6 +521,11 @@
 #define  PCI_EXP_OBFF_MSGA_EN   0x2000  /* OBFF enable with Message type A */
 #define  PCI_EXP_OBFF_MSGB_EN   0x4000  /* OBFF enable with Message type B */
 #define  PCI_EXP_OBFF_WAKE_EN   0x6000  /* OBFF using WAKE# signaling */
+#define PCI_EXP_LNKCAP2         44      /* Link Capability 2 */
+#define  PCI_EXP_LNKCAP2_SLS_2_5GB 0x01 /* Current Link Speed 2.5GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_5_0GB 0x02 /* Current Link Speed 5.0GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_8_0GB 0x04 /* Current Link Speed 8.0GT/s */
+#define  PCI_EXP_LNKCAP2_CROSSLINK 0x100 /* Crosslink supported */
 #define PCI_EXP_LNKCTL2         48      /* Link Control 2 */
 #define PCI_EXP_SLTCTL2         56      /* Slot Control 2 */