ipu7-dma.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/* Copyright (C) 2013--2025 Intel Corporation */
 3
 4#ifndef IPU7_DMA_H
 5#define IPU7_DMA_H
 6
 7#include <linux/dma-map-ops.h>
 8#include <linux/dma-mapping.h>
 9#include <linux/iova.h>
10#include <linux/scatterlist.h>
11#include <linux/types.h>
12
13#include "ipu7-bus.h"
14
15#define DMA_ATTR_RESERVE_REGION		BIT(31)
16struct ipu7_mmu_info;
17
18struct ipu7_dma_mapping {
19	struct ipu7_mmu_info *mmu_info;
20	struct iova_domain iovad;
21};
22
23void ipu7_dma_sync_single(struct ipu7_bus_device *sys, dma_addr_t dma_handle,
24			  size_t size);
25void ipu7_dma_sync_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist,
26		      unsigned int nents);
27void ipu7_dma_sync_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt);
28void *ipu7_dma_alloc(struct ipu7_bus_device *sys, size_t size,
29		     dma_addr_t *dma_handle, gfp_t gfp,
30		     unsigned long attrs);
31void ipu7_dma_free(struct ipu7_bus_device *sys, size_t size, void *vaddr,
32		   dma_addr_t dma_handle, unsigned long attrs);
33int ipu7_dma_mmap(struct ipu7_bus_device *sys, struct vm_area_struct *vma,
34		  void *addr, dma_addr_t iova, size_t size,
35		  unsigned long attrs);
36int ipu7_dma_map_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist,
37		    int nents, enum dma_data_direction dir,
38		    unsigned long attrs);
39void ipu7_dma_unmap_sg(struct ipu7_bus_device *sys, struct scatterlist *sglist,
40		       int nents, enum dma_data_direction dir,
41		       unsigned long attrs);
42int ipu7_dma_map_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt,
43			 enum dma_data_direction dir, unsigned long attrs);
44void ipu7_dma_unmap_sgtable(struct ipu7_bus_device *sys, struct sg_table *sgt,
45			    enum dma_data_direction dir, unsigned long attrs);
46#endif /* IPU7_DMA_H */