PCI: add PCI Advanced Feature Capability defines

PCI Advanced Features Capability is introduced by "Conventional PCI
Advanced Caps ECN" (can be downloaded in pcisig.com).  Add defines for
the various AF capabilities, including function level reset (FLR).

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index e5effd47ed74..7766488470e4 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -210,6 +210,7 @@
 #define  PCI_CAP_ID_AGP3        0x0E    /* AGP Target PCI-PCI bridge */
 #define  PCI_CAP_ID_EXP         0x10    /* PCI Express */
 #define  PCI_CAP_ID_MSIX        0x11    /* MSI-X */
+#define  PCI_CAP_ID_AF          0x13    /* PCI Advanced Features */
 #define PCI_CAP_LIST_NEXT       1       /* Next capability in the list */
 #define PCI_CAP_FLAGS           2       /* Capability defined flags (16 bits) */
 #define PCI_CAP_SIZEOF          4
@@ -316,6 +317,17 @@
 #define  PCI_CHSWP_EXT          0x40    /* ENUM# status - extraction */
 #define  PCI_CHSWP_INS          0x80    /* ENUM# status - insertion */
 
+/* PCI Advanced Feature registers */
+
+#define PCI_AF_LENGTH           2
+#define PCI_AF_CAP              3
+#define  PCI_AF_CAP_TP          0x01
+#define  PCI_AF_CAP_FLR         0x02
+#define PCI_AF_CTRL             4
+#define  PCI_AF_CTRL_FLR        0x01
+#define PCI_AF_STATUS           5
+#define  PCI_AF_STATUS_TP       0x01
+
 /* PCI-X registers */
 
 #define PCI_X_CMD               2       /* Modes & Features */