summaryrefslogtreecommitdiff
path: root/arch/powerpc/include/asm/tce.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/include/asm/tce.h')
-rw-r--r--arch/powerpc/include/asm/tce.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/tce.h b/arch/powerpc/include/asm/tce.h
index f663634cccc9..3dead82d5979 100644
--- a/arch/powerpc/include/asm/tce.h
+++ b/arch/powerpc/include/asm/tce.h
@@ -26,10 +26,12 @@
/*
* 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_SW_INVAL 2
/* TCE page size is 4096 bytes (1 << 12) */