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