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#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