exynos_drm_iommu.h revision 0519f9a12d0113caab78980c48a7902d2bd40c2c
1/* exynos_drm_iommu.h 2 * 3 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 4 * Authoer: Inki Dae <inki.dae@samsung.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26#ifndef _EXYNOS_DRM_IOMMU_H_ 27#define _EXYNOS_DRM_IOMMU_H_ 28 29#define EXYNOS_DEV_ADDR_START 0x20000000 30#define EXYNOS_DEV_ADDR_SIZE 0x40000000 31#define EXYNOS_DEV_ADDR_ORDER 0x4 32 33#ifdef CONFIG_DRM_EXYNOS_IOMMU 34 35int drm_create_iommu_mapping(struct drm_device *drm_dev); 36 37void drm_release_iommu_mapping(struct drm_device *drm_dev); 38 39int drm_iommu_attach_device(struct drm_device *drm_dev, 40 struct device *subdrv_dev); 41 42void drm_iommu_detach_device(struct drm_device *dev_dev, 43 struct device *subdrv_dev); 44 45static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) 46{ 47#ifdef CONFIG_ARM_DMA_USE_IOMMU 48 struct device *dev = drm_dev->dev; 49 50 return dev->archdata.mapping ? true : false; 51#else 52 return false; 53#endif 54} 55 56#else 57 58struct dma_iommu_mapping; 59static inline int drm_create_iommu_mapping(struct drm_device *drm_dev) 60{ 61 return 0; 62} 63 64static inline void drm_release_iommu_mapping(struct drm_device *drm_dev) 65{ 66} 67 68static inline int drm_iommu_attach_device(struct drm_device *drm_dev, 69 struct device *subdrv_dev) 70{ 71 return 0; 72} 73 74static inline void drm_iommu_detach_device(struct drm_device *drm_dev, 75 struct device *subdrv_dev) 76{ 77} 78 79static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) 80{ 81 return false; 82} 83 84#endif 85#endif 86