1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/* exynos_drm_iommu.h
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* Authoer: Inki Dae <inki.dae@samsung.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _EXYNOS_DRM_IOMMU_H_
#define _EXYNOS_DRM_IOMMU_H_
enum iommu_types {
IOMMU_FIMD = 0,
IOMMU_HDMI,
IOMMU_G2D,
IOMMU_FIMC,
IOMMU_G3D,
IOMMU_ROTATOR,
IOMMU_MASK = 0x3f
};
struct iommu_gem_map_params {
struct device *dev;
struct drm_device *drm_dev;
struct drm_file *file;
void *gem_obj;
};
#define is_iommu_type_valid(t) (((1 << (t)) & ~(IOMMU_MASK)) ? false : true)
void exynos_drm_remove_iommu_list(struct list_head *iommu_list,
void *gem_obj);
/* get all pages to gem object and map them to iommu table. */
dma_addr_t exynos_drm_iommu_map_gem(struct iommu_gem_map_params *params,
struct list_head *iommu_list,
unsigned int gem_handle,
enum iommu_types type);
/* unmap device address space to gem object from iommu table. */
void exynos_drm_iommu_unmap_gem(struct iommu_gem_map_params *params,
dma_addr_t dma_addr,
enum iommu_types type);
/* map physical memory region pointed by paddr to iommu table. */
dma_addr_t exynos_drm_iommu_map(struct device *dev, dma_addr_t paddr,
size_t size);
/* unmap device address space pointed by dma_addr from iommu table. */
void exynos_drm_iommu_unmap(struct device *dev, dma_addr_t dma_addr);
/* setup device address space for device iommu. */
int exynos_drm_iommu_setup(struct device *dev);
int exynos_drm_iommu_activate(struct device *dev);
void exynos_drm_iommu_deactivate(struct device *dev);
/* clean up allocated device address space for device iommu. */
void exynos_drm_iommu_cleanup(struct device *dev);
#endif
|
