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-rw-r--r--arch/powerpc/include/asm/tce.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/tce.h b/arch/powerpc/include/asm/tce.h
index f663634cccc..743f36b38e5 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) */