projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0519f9a1 ID |
1 | /* exynos_drm_iommu.h |
| 2 | * | |
| 3 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
| 4 | * Authoer: Inki Dae <inki.dae@samsung.com> | |
| 5 | * | |
| d81aecb5 ID |
6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 9 | * option) any later version. | |
| 0519f9a1 ID |
10 | */ |
| 11 | ||
| 12 | #ifndef _EXYNOS_DRM_IOMMU_H_ | |
| 13 | #define _EXYNOS_DRM_IOMMU_H_ | |
| 14 | ||
| 15 | #define EXYNOS_DEV_ADDR_START 0x20000000 | |
| 16 | #define EXYNOS_DEV_ADDR_SIZE 0x40000000 | |
| fe9e3137 | 17 | #define EXYNOS_DEV_ADDR_ORDER 0x0 |
| 0519f9a1 ID |
18 | |
| 19 | #ifdef CONFIG_DRM_EXYNOS_IOMMU | |
| 20 | ||
| 21 | int drm_create_iommu_mapping(struct drm_device *drm_dev); | |
| 22 | ||
| 23 | void drm_release_iommu_mapping(struct drm_device *drm_dev); | |
| 24 | ||
| 25 | int drm_iommu_attach_device(struct drm_device *drm_dev, | |
| 26 | struct device *subdrv_dev); | |
| 27 | ||
| 28 | void drm_iommu_detach_device(struct drm_device *dev_dev, | |
| 29 | struct device *subdrv_dev); | |
| 30 | ||
| 31 | static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) | |
| 32 | { | |
| 33 | #ifdef CONFIG_ARM_DMA_USE_IOMMU | |
| 34 | struct device *dev = drm_dev->dev; | |
| 35 | ||
| 36 | return dev->archdata.mapping ? true : false; | |
| 37 | #else | |
| 38 | return false; | |
| 39 | #endif | |
| 40 | } | |
| 41 | ||
| 42 | #else | |
| 43 | ||
| 44 | struct dma_iommu_mapping; | |
| 45 | static inline int drm_create_iommu_mapping(struct drm_device *drm_dev) | |
| 46 | { | |
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | static inline void drm_release_iommu_mapping(struct drm_device *drm_dev) | |
| 51 | { | |
| 52 | } | |
| 53 | ||
| 54 | static inline int drm_iommu_attach_device(struct drm_device *drm_dev, | |
| 55 | struct device *subdrv_dev) | |
| 56 | { | |
| 57 | return 0; | |
| 58 | } | |
| 59 | ||
| 60 | static inline void drm_iommu_detach_device(struct drm_device *drm_dev, | |
| 61 | struct device *subdrv_dev) | |
| 62 | { | |
| 63 | } | |
| 64 | ||
| 65 | static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) | |
| 66 | { | |
| 67 | return false; | |
| 68 | } | |
| 69 | ||
| 70 | #endif | |
| 71 | #endif |