| Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 1 | /* exynos_drm_iommu.h |
| 2 | * |
| 3 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 4 | * Authoer: Inki Dae <inki.dae@samsung.com> |
| 5 | * |
| Inki Dae | d81aecb | 2012-12-18 02:30:17 +0900 | [diff] [blame] | 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. |
| Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 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 |
| Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 17 | |
| 18 | #ifdef CONFIG_DRM_EXYNOS_IOMMU |
| 19 | |
| 20 | int drm_create_iommu_mapping(struct drm_device *drm_dev); |
| 21 | |
| 22 | void drm_release_iommu_mapping(struct drm_device *drm_dev); |
| 23 | |
| 24 | int drm_iommu_attach_device(struct drm_device *drm_dev, |
| 25 | struct device *subdrv_dev); |
| 26 | |
| 27 | void drm_iommu_detach_device(struct drm_device *dev_dev, |
| 28 | struct device *subdrv_dev); |
| 29 | |
| 30 | static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) |
| 31 | { |
| 32 | #ifdef CONFIG_ARM_DMA_USE_IOMMU |
| 33 | struct device *dev = drm_dev->dev; |
| 34 | |
| 35 | return dev->archdata.mapping ? true : false; |
| 36 | #else |
| 37 | return false; |
| 38 | #endif |
| 39 | } |
| 40 | |
| 41 | #else |
| 42 | |
| Inki Dae | 0519f9a | 2012-10-20 07:53:42 -0700 | [diff] [blame] | 43 | static inline int drm_create_iommu_mapping(struct drm_device *drm_dev) |
| 44 | { |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | static inline void drm_release_iommu_mapping(struct drm_device *drm_dev) |
| 49 | { |
| 50 | } |
| 51 | |
| 52 | static inline int drm_iommu_attach_device(struct drm_device *drm_dev, |
| 53 | struct device *subdrv_dev) |
| 54 | { |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static inline void drm_iommu_detach_device(struct drm_device *drm_dev, |
| 59 | struct device *subdrv_dev) |
| 60 | { |
| 61 | } |
| 62 | |
| 63 | static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) |
| 64 | { |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | #endif |
| 69 | #endif |