rtc: update documentation wrt irq_set_freq

[linux-2.6] / drivers / pci / intel-iommu.h

diff --git a/drivers/pci/intel-iommu.h b/drivers/pci/intel-iommu.h
index 459ad1f9dc549f5d84635c93429a1dafdd44a978..0e4862675ad23450787577713e31331c078fa826 100644 (file)
--- a/drivers/pci/intel-iommu.h
+++ b/drivers/pci/intel-iommu.h
@@ -23,9 +23,23 @@
 
 #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.
  */