PCI: Add #defines for Hypertransport MSI fields

Add a few #defines for grabbing and working with the address fields
in a HT_CAPTYPE_MSI_MAPPING capability. All from the HT spec v3.00.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index a54b48f7cee..7a6d34ee5ab 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -494,6 +494,13 @@
 #define HT_CAPTYPE_UNITID_CLUMP 0x90    /* Unit ID clumping */
 #define HT_CAPTYPE_EXTCONF      0x98    /* Extended Configuration Space Access */
 #define HT_CAPTYPE_MSI_MAPPING  0xA8    /* MSI Mapping Capability */
+#define  HT_MSI_FLAGS           0x02            /* Offset to flags */
+#define  HT_MSI_FLAGS_ENABLE    0x1             /* Mapping enable */
+#define  HT_MSI_FLAGS_FIXED     0x2             /* Fixed mapping only */
+#define  HT_MSI_FIXED_ADDR      0x00000000FEE00000ULL   /* Fixed addr */
+#define  HT_MSI_ADDR_LO         0x04            /* Offset to low addr bits */
+#define  HT_MSI_ADDR_LO_MASK    0xFFF00000      /* Low address bit mask */
+#define  HT_MSI_ADDR_HI         0x08            /* Offset to high addr bits */
 #define HT_CAPTYPE_DIRECT_ROUTE 0xB0    /* Direct routing configuration */
 #define HT_CAPTYPE_VCSET        0xB8    /* Virtual Channel configuration */
 #define HT_CAPTYPE_ERROR_RETRY  0xC0    /* Retry on error configuration */