71 lines
1.6 KiB
C
71 lines
1.6 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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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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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#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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