86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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/* exynos_drm_iommu.h
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* Authoer: Inki Dae <inki.dae@samsung.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _EXYNOS_DRM_IOMMU_H_
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#define _EXYNOS_DRM_IOMMU_H_
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#define EXYNOS_DEV_ADDR_START 0x20000000
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#define EXYNOS_DEV_ADDR_SIZE 0x40000000
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#define EXYNOS_DEV_ADDR_ORDER 0x4
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#ifdef CONFIG_DRM_EXYNOS_IOMMU
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int drm_create_iommu_mapping(struct drm_device *drm_dev);
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void drm_release_iommu_mapping(struct drm_device *drm_dev);
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int drm_iommu_attach_device(struct drm_device *drm_dev,
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struct device *subdrv_dev);
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void drm_iommu_detach_device(struct drm_device *dev_dev,
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struct device *subdrv_dev);
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static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
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{
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#ifdef CONFIG_ARM_DMA_USE_IOMMU
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struct device *dev = drm_dev->dev;
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return dev->archdata.mapping ? true : false;
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#else
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return false;
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#endif
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}
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#else
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struct dma_iommu_mapping;
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static inline int drm_create_iommu_mapping(struct drm_device *drm_dev)
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{
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return 0;
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}
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static inline void drm_release_iommu_mapping(struct drm_device *drm_dev)
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{
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}
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static inline int drm_iommu_attach_device(struct drm_device *drm_dev,
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struct device *subdrv_dev)
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{
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return 0;
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}
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static inline void drm_iommu_detach_device(struct drm_device *drm_dev,
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struct device *subdrv_dev)
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{
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}
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static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
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{
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return false;
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}
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#endif
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#endif
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