2 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index af1dab41674..1a455f1f86d 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -11,6 +11,7 @@
 
 #define DMA_PTE_READ (1)
 #define DMA_PTE_WRITE (2)
+#define DMA_PTE_SNP (1 << 11)
 
 struct intel_iommu;
 struct dmar_domain;
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 0cf3a4e43f2..3af4ffd591b 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -21,6 +21,7 @@
 
 #define IOMMU_READ      (1)
 #define IOMMU_WRITE     (2)
+#define IOMMU_CACHE     (4) /* DMA cache coherency */
 
 struct device;