1 files changed, 7 insertions, 3 deletions

diff --git a/arch/powerpc/include/asm/tce.h b/arch/powerpc/include/asm/tce.h
index f663634cccc9..743f36b38e5d 100644
--- a/arch/powerpc/include/asm/tce.h
+++ b/arch/powerpc/include/asm/tce.h
@@ -26,10 +26,14 @@
 
 /*
  * Tces come in two formats, one for the virtual bus and a different
- * format for PCI
+ * format for PCI.  PCI TCEs can have hardware or software maintianed
+ * coherency.
  */
-#define TCE_VB  0
-#define TCE_PCI 1
+#define TCE_VB                  0
+#define TCE_PCI                 1
+#define TCE_PCI_SWINV_CREATE    2
+#define TCE_PCI_SWINV_FREE      4
+#define TCE_PCI_SWINV_PAIR      8
 
 /* TCE page size is 4096 bytes (1 << 12) */