1 files changed, 52 insertions, 0 deletions

diff --git a/include/linux/omap-iommu.h b/include/linux/omap-iommu.h
new file mode 100644
index 00000000000..cac78de09c0
--- /dev/null
+++ b/include/linux/omap-iommu.h
@@ -0,0 +1,52 @@
+/*
+ * omap iommu: simple virtual address space management
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _INTEL_IOMMU_H_
+#define _INTEL_IOMMU_H_
+
+struct iovm_struct {
+        struct omap_iommu       *iommu; /* iommu object which this belongs to */
+        u32                     da_start; /* area definition */
+        u32                     da_end;
+        u32                     flags; /* IOVMF_: see below */
+        struct list_head        list; /* linked in ascending order */
+        const struct sg_table   *sgt; /* keep 'page' <-> 'da' mapping */
+        void                    *va; /* mpu side mapped address */
+};
+
+#define MMU_RAM_ENDIAN_SHIFT    9
+#define MMU_RAM_ENDIAN_LITTLE   (0 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ELSZ_8          (0 << MMU_RAM_ELSZ_SHIFT)
+#define IOVMF_ENDIAN_LITTLE     MMU_RAM_ENDIAN_LITTLE
+#define MMU_RAM_ELSZ_SHIFT      7
+#define IOVMF_ELSZ_8            MMU_RAM_ELSZ_8
+
+struct iommu_domain;
+
+extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
+extern u32
+omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
+                        const struct sg_table *sgt, u32 flags);
+extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
+                                struct device *dev, u32 da);
+extern u32
+omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
+                                u32 da, size_t bytes, u32 flags);
+extern void
+omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
+                                const u32 da);
+extern void *omap_da_to_va(struct device *dev, u32 da);
+
+extern void omap_iommu_save_ctx(struct device *dev);
+extern void omap_iommu_restore_ctx(struct device *dev);
+
+#endif