Edit File: omap-iommu.h
/* * 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