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drm/exynos/iommu: move IOMMU specific stuff into exynos_drm_iommu.c 

Since __exynos_iommu* functions are used only in exynos_drm_iommu.c we can
move them there.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2018-10-12 12:53:44 +02:00 committed by Inki Dae
parent 237556962e
commit a0b68a710b
2 changed files with 72 additions and 72 deletions
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72
drivers/gpu/drm/exynos/exynos_drm_iommu.c
View File

@ -18,6 +18,78 @@
#include "exynos_drm_drv.h" #include "exynos_drm_drv.h"
#include "exynos_drm_iommu.h" #include "exynos_drm_iommu.h"
#define EXYNOS_DEV_ADDR_START 0x20000000
#define EXYNOS_DEV_ADDR_SIZE 0x40000000
#if defined(CONFIG_ARM_DMA_USE_IOMMU)
#include <asm/dma-iommu.h>
static inline int __exynos_iommu_create_mapping(struct exynos_drm_private *priv,
unsigned long start, unsigned long size)
{
priv->mapping = arm_iommu_create_mapping(&platform_bus_type, start,
size);
return IS_ERR(priv->mapping);
}
static inline void
__exynos_iommu_release_mapping(struct exynos_drm_private *priv)
{
arm_iommu_release_mapping(priv->mapping);
}
static inline int __exynos_iommu_attach(struct exynos_drm_private *priv,
struct device *dev)
{
if (dev->archdata.mapping)
arm_iommu_detach_device(dev);
return arm_iommu_attach_device(dev, priv->mapping);
}
static inline void __exynos_iommu_detach(struct exynos_drm_private *priv,
struct device *dev)
{
arm_iommu_detach_device(dev);
}
#elif defined(CONFIG_IOMMU_DMA)
#include <linux/dma-iommu.h>
static inline int __exynos_iommu_create_mapping(struct exynos_drm_private *priv,
unsigned long start, unsigned long size)
{
priv->mapping = iommu_get_domain_for_dev(priv->dma_dev);
return 0;
}
static inline void __exynos_iommu_release_mapping(struct exynos_drm_private *priv)
{
priv->mapping = NULL;
}
static inline int __exynos_iommu_attach(struct exynos_drm_private *priv,
struct device *dev)
{
struct iommu_domain *domain = priv->mapping;
if (dev != priv->dma_dev)
return iommu_attach_device(domain, dev);
return 0;
}
static inline void __exynos_iommu_detach(struct exynos_drm_private *priv,
struct device *dev)
{
struct iommu_domain *domain = priv->mapping;
if (dev != priv->dma_dev)
iommu_detach_device(domain, dev);
}
#else
#error Unsupported architecture and IOMMU/DMA-mapping glue code
#endif
static inline int configure_dma_max_seg_size(struct device *dev) static inline int configure_dma_max_seg_size(struct device *dev)
{ {
if (!dev->dma_parms) if (!dev->dma_parms)

72
drivers/gpu/drm/exynos/exynos_drm_iommu.h
View File

@ -12,80 +12,8 @@
#ifndef _EXYNOS_DRM_IOMMU_H_ #ifndef _EXYNOS_DRM_IOMMU_H_
#define _EXYNOS_DRM_IOMMU_H_ #define _EXYNOS_DRM_IOMMU_H_
#define EXYNOS_DEV_ADDR_START 0x20000000
#define EXYNOS_DEV_ADDR_SIZE 0x40000000
#ifdef CONFIG_EXYNOS_IOMMU #ifdef CONFIG_EXYNOS_IOMMU
#if defined(CONFIG_ARM_DMA_USE_IOMMU)
#include <asm/dma-iommu.h>
static inline int __exynos_iommu_create_mapping(struct exynos_drm_private *priv,
unsigned long start, unsigned long size)
{
priv->mapping = arm_iommu_create_mapping(&platform_bus_type, start,
size);
return IS_ERR(priv->mapping);
}
static inline void
__exynos_iommu_release_mapping(struct exynos_drm_private *priv)
{
arm_iommu_release_mapping(priv->mapping);
}
static inline int __exynos_iommu_attach(struct exynos_drm_private *priv,
struct device *dev)
{
if (dev->archdata.mapping)
arm_iommu_detach_device(dev);
return arm_iommu_attach_device(dev, priv->mapping);
}
static inline void __exynos_iommu_detach(struct exynos_drm_private *priv,
struct device *dev)
{
arm_iommu_detach_device(dev);
}
#elif defined(CONFIG_IOMMU_DMA)
#include <linux/dma-iommu.h>
static inline int __exynos_iommu_create_mapping(struct exynos_drm_private *priv,
unsigned long start, unsigned long size)
{
priv->mapping = iommu_get_domain_for_dev(priv->dma_dev);
return 0;
}
static inline void __exynos_iommu_release_mapping(struct exynos_drm_private *priv)
{
priv->mapping = NULL;
}
static inline int __exynos_iommu_attach(struct exynos_drm_private *priv,
struct device *dev)
{
struct iommu_domain *domain = priv->mapping;
if (dev != priv->dma_dev)
return iommu_attach_device(domain, dev);
return 0;
}
static inline void __exynos_iommu_detach(struct exynos_drm_private *priv,
struct device *dev)
{
struct iommu_domain *domain = priv->mapping;
if (dev != priv->dma_dev)
iommu_detach_device(domain, dev);
}
#else
#error Unsupported architecture and IOMMU/DMA-mapping glue code
#endif
int drm_create_iommu_mapping(struct drm_device *drm_dev); int drm_create_iommu_mapping(struct drm_device *drm_dev);
void drm_release_iommu_mapping(struct drm_device *drm_dev); void drm_release_iommu_mapping(struct drm_device *drm_dev);