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>

diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index a54b48f..7a6d34e 100644 (file)
--- 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 */