| Tony Lindgren | c8d35c8 | 2012-11-02 12:24:03 -0700 | [diff] [blame] | 1 | /* |
| 2 | * omap iommu: simple virtual address space management |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 Nokia Corporation |
| 5 | * |
| 6 | * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com> |
| 7 | * |
| 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. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _INTEL_IOMMU_H_ |
| 14 | #define _INTEL_IOMMU_H_ |
| 15 | |
| 16 | struct iovm_struct { |
| 17 | struct omap_iommu *iommu; /* iommu object which this belongs to */ |
| 18 | u32 da_start; /* area definition */ |
| 19 | u32 da_end; |
| 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 */ |
| 24 | }; |
| 25 | |
| 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 |
| 32 | |
| 33 | struct iommu_domain; |
| 34 | |
| 35 | extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da); |
| 36 | extern u32 |
| 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); |
| 41 | extern u32 |
| 42 | omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev, |
| 43 | u32 da, size_t bytes, u32 flags); |
| 44 | extern void |
| 45 | omap_iommu_vfree(struct iommu_domain *domain, struct device *dev, |
| 46 | const u32 da); |
| 47 | extern void *omap_da_to_va(struct device *dev, u32 da); |
| 48 | |
| 49 | extern void omap_iommu_save_ctx(struct device *dev); |
| 50 | extern void omap_iommu_restore_ctx(struct device *dev); |
| 51 | |
| 52 | #endif |