2 * omap iommu: simple virtual address space management
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #ifndef _INTEL_IOMMU_H_
14 #define _INTEL_IOMMU_H_
17 struct omap_iommu *iommu; /* iommu object which this belongs to */
18 u32 da_start; /* area definition */
20 u32 flags; /* IOVMF_: see below */
21 struct list_head list; /* linked in ascending order */
22 const struct sg_table *sgt; /* keep 'page' <-> 'da' mapping */
23 void *va; /* mpu side mapped address */
26 #define MMU_RAM_ENDIAN_SHIFT 9
27 #define MMU_RAM_ENDIAN_LITTLE (0 << MMU_RAM_ENDIAN_SHIFT)
28 #define MMU_RAM_ELSZ_8 (0 << MMU_RAM_ELSZ_SHIFT)
29 #define IOVMF_ENDIAN_LITTLE MMU_RAM_ENDIAN_LITTLE
30 #define MMU_RAM_ELSZ_SHIFT 7
31 #define IOVMF_ELSZ_8 MMU_RAM_ELSZ_8
35 extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
37 omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
38 const struct sg_table *sgt, u32 flags);
39 extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
40 struct device *dev, u32 da);
42 omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
43 u32 da, size_t bytes, u32 flags);
45 omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
47 extern void *omap_da_to_va(struct device *dev, u32 da);
49 extern void omap_iommu_save_ctx(struct device *dev);
50 extern void omap_iommu_restore_ctx(struct device *dev);