1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/pci/intel-iommu.h b/drivers/pci/intel-iommu.h
index 459ad1f9dc54..0e4862675ad2 100644
--- a/drivers/pci/intel-iommu.h
+++ b/drivers/pci/intel-iommu.h
@@ -23,10 +23,24 @@
 
 #include <linux/types.h>
 #include <linux/msi.h>
+#include <linux/sysdev.h>
 #include "iova.h"
 #include <linux/io.h>
 
 /*
+ * We need a fixed PAGE_SIZE of 4K irrespective of
+ * arch PAGE_SIZE for IOMMU page tables.
+ */
+#define PAGE_SHIFT_4K           (12)
+#define PAGE_SIZE_4K            (1UL << PAGE_SHIFT_4K)
+#define PAGE_MASK_4K            (((u64)-1) << PAGE_SHIFT_4K)
+#define PAGE_ALIGN_4K(addr)     (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
+
+#define IOVA_PFN(addr)          ((addr) >> PAGE_SHIFT_4K)
+#define DMA_32BIT_PFN           IOVA_PFN(DMA_32BIT_MASK)
+#define DMA_64BIT_PFN           IOVA_PFN(DMA_64BIT_MASK)
+
+/*
  * Intel IOMMU register specification per version 1.0 public spec.
  */