| /* |
| * 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 |