mirror of https://gitee.com/openkylin/linux.git
37 lines
779 B
C
37 lines
779 B
C
#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
|