mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
|
/*
|
||
|
|
* 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
|