| /* |
| * 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 __IOMMU_MMAP_H |
| #define __IOMMU_MMAP_H |
| |
| struct iovm_struct { |
| struct 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 */ |
| }; |
| |
| /* |
| * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma) |
| * |
| * lower 16 bit is used for h/w and upper 16 bit is for s/w. |
| */ |
| #define IOVMF_SW_SHIFT 16 |
| #define IOVMF_HW_SIZE (1 << IOVMF_SW_SHIFT) |
| #define IOVMF_HW_MASK (IOVMF_HW_SIZE - 1) |
| #define IOVMF_SW_MASK (~IOVMF_HW_MASK)UL |
| |
| /* |
| * iovma: h/w flags derived from cam and ram attribute |
| */ |
| #define IOVMF_CAM_MASK (~((1 << 10) - 1)) |
| #define IOVMF_RAM_MASK (~IOVMF_CAM_MASK) |
| |
| #define IOVMF_PGSZ_MASK (3 << 0) |
| #define IOVMF_PGSZ_1M MMU_CAM_PGSZ_1M |
| #define IOVMF_PGSZ_64K MMU_CAM_PGSZ_64K |
| #define IOVMF_PGSZ_4K MMU_CAM_PGSZ_4K |
| #define IOVMF_PGSZ_16M MMU_CAM_PGSZ_16M |
| |
| #define IOVMF_ENDIAN_MASK (1 << 9) |
| #define IOVMF_ENDIAN_BIG MMU_RAM_ENDIAN_BIG |
| #define IOVMF_ENDIAN_LITTLE MMU_RAM_ENDIAN_LITTLE |
| |
| #define IOVMF_ELSZ_MASK (3 << 7) |
| #define IOVMF_ELSZ_8 MMU_RAM_ELSZ_8 |
| #define IOVMF_ELSZ_16 MMU_RAM_ELSZ_16 |
| #define IOVMF_ELSZ_32 MMU_RAM_ELSZ_32 |
| #define IOVMF_ELSZ_NONE MMU_RAM_ELSZ_NONE |
| |
| #define IOVMF_MIXED_MASK (1 << 6) |
| #define IOVMF_MIXED MMU_RAM_MIXED |
| |
| /* |
| * iovma: s/w flags, used for mapping and umapping internally. |
| */ |
| #define IOVMF_MMIO (1 << IOVMF_SW_SHIFT) |
| #define IOVMF_ALLOC (2 << IOVMF_SW_SHIFT) |
| #define IOVMF_ALLOC_MASK (3 << IOVMF_SW_SHIFT) |
| |
| /* "superpages" is supported just with physically linear pages */ |
| #define IOVMF_DISCONT (1 << (2 + IOVMF_SW_SHIFT)) |
| #define IOVMF_LINEAR (2 << (2 + IOVMF_SW_SHIFT)) |
| #define IOVMF_LINEAR_MASK (3 << (2 + IOVMF_SW_SHIFT)) |
| |
| #define IOVMF_DA_FIXED (1 << (4 + IOVMF_SW_SHIFT)) |
| |
| |
| extern struct iovm_struct *find_iovm_area(struct iommu *obj, u32 da); |
| extern u32 iommu_vmap(struct iommu *obj, u32 da, |
| const struct sg_table *sgt, u32 flags); |
| extern struct sg_table *iommu_vunmap(struct iommu *obj, u32 da); |
| extern u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes, |
| u32 flags); |
| extern void iommu_vfree(struct iommu *obj, const u32 da); |
| extern u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes, |
| u32 flags); |
| extern void iommu_kunmap(struct iommu *obj, u32 da); |
| extern u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes, |
| u32 flags); |
| extern void iommu_kfree(struct iommu *obj, u32 da); |
| |
| extern void *da_to_va(struct iommu *obj, u32 da); |
| |
| #endif /* __IOMMU_MMAP_H */ |