1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * omap iommu: simple virtual address space ma 2 * omap iommu: simple virtual address space management
4 * 3 *
5 * Copyright (C) 2008-2009 Nokia Corporation 4 * Copyright (C) 2008-2009 Nokia Corporation
6 * 5 *
7 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia 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.
8 */ 11 */
9 12
10 #ifndef _OMAP_IOMMU_H_ !! 13 #ifndef _INTEL_IOMMU_H_
11 #define _OMAP_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
12 32
13 struct iommu_domain; 33 struct iommu_domain;
14 34
15 #ifdef CONFIG_OMAP_IOMMU !! 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
16 extern void omap_iommu_save_ctx(struct device 49 extern void omap_iommu_save_ctx(struct device *dev);
17 extern void omap_iommu_restore_ctx(struct devi 50 extern void omap_iommu_restore_ctx(struct device *dev);
18 <<
19 int omap_iommu_domain_deactivate(struct iommu_ <<
20 int omap_iommu_domain_activate(struct iommu_do <<
21 #else <<
22 static inline void omap_iommu_save_ctx(struct <<
23 static inline void omap_iommu_restore_ctx(stru <<
24 <<
25 static inline int omap_iommu_domain_deactivate <<
26 { <<
27 return -ENODEV; <<
28 } <<
29 <<
30 static inline int omap_iommu_domain_activate(s <<
31 { <<
32 return -ENODEV; <<
33 } <<
34 #endif <<
35 51
36 #endif 52 #endif
37 53
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.