[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / include / asm / dma-iommu.h

#ifndef ASMARM_DMA_IOMMU_H
#define ASMARM_DMA_IOMMU_H

#ifdef __KERNEL__

#include <linux/mm_types.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/kmemcheck.h>
#include <linux/kref.h>

struct dma_iommu_mapping {
	/* iommu specific data */
	struct iommu_domain	*domain;

	void			*bitmap;
	size_t			bits;
	unsigned int		order;
	dma_addr_t		base;

	spinlock_t		lock;
	struct kref		kref;
};

struct dma_iommu_mapping *
arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size,
			 int order);

void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping);

int arm_iommu_attach_device(struct device *dev,
					struct dma_iommu_mapping *mapping);
void arm_iommu_detach_device(struct device *dev);

#endif /* __KERNEL__ */
#endif
Commit	Line	Data
4ce63fcd MS	1	#ifndef ASMARM_DMA_IOMMU_H
	2	#define ASMARM_DMA_IOMMU_H
	3
	4	#ifdef __KERNEL__
	5
	6	#include <linux/mm_types.h>
	7	#include <linux/scatterlist.h>
	8	#include <linux/dma-debug.h>
	9	#include <linux/kmemcheck.h>
3e3a1823	10	#include <linux/kref.h>
4ce63fcd MS	11
	12	struct dma_iommu_mapping {
	13	/* iommu specific data */
	14	struct iommu_domain *domain;
	15
	16	void *bitmap;
	17	size_t bits;
	18	unsigned int order;
	19	dma_addr_t base;
	20
	21	spinlock_t lock;
	22	struct kref kref;
	23	};
	24
	25	struct dma_iommu_mapping *
	26	arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size,
	27	int order);
	28
	29	void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping);
	30
	31	int arm_iommu_attach_device(struct device *dev,
	32	struct dma_iommu_mapping *mapping);
6fe36758	33	void arm_iommu_detach_device(struct device *dev);
4ce63fcd MS	34
	35	#endif /* __KERNEL__ */
	36	#endif