mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-27 13:05:03 +08:00
fe9e3137cf
This patch modifies iommu address allocation order from 64k to 4k. 64k order causes waste of the io space and this was our mistakes. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/* exynos_drm_iommu.h
|
|
*
|
|
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
|
|
* Authoer: Inki Dae <inki.dae@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#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 0x0
|
|
|
|
#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
|