linux/include/linux/iommu-helper.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_IOMMU_HELPER_H
#define _LINUX_IOMMU_HELPER_H

#include <linux/bug.h>
#include <linux/log2.h>
#include <linux/math.h>
#include <linux/types.h>

static inline unsigned long iommu_device_max_index(unsigned long size,
						   unsigned long offset,
						   u64 dma_mask)
{ … }

static inline int iommu_is_span_boundary(unsigned int index, unsigned int nr,
		unsigned long shift, unsigned long boundary_size)
{ … }

extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
				      unsigned long start, unsigned int nr,
				      unsigned long shift,
				      unsigned long boundary_size,
				      unsigned long align_mask);

static inline unsigned long iommu_num_pages(unsigned long addr,
					    unsigned long len,
					    unsigned long io_page_size)
{ … }

#endif