1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_DMA_MAPPING_H
3 #define _ASM_IA64_DMA_MAPPING_H
4 
5 /*
6  * Copyright (C) 2003-2004 Hewlett-Packard Co
7  *	David Mosberger-Tang <davidm@hpl.hp.com>
8  */
9 #include <asm/machvec.h>
10 #include <linux/scatterlist.h>
11 #include <asm/swiotlb.h>
12 #include <linux/dma-debug.h>
13 
14 #define ARCH_HAS_DMA_GET_REQUIRED_MASK
15 
16 extern const struct dma_map_ops *dma_ops;
17 extern struct ia64_machine_vector ia64_mv;
18 extern void set_iommu_machvec(void);
19 
20 extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
21 				    enum dma_data_direction);
22 extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
23 				enum dma_data_direction);
24 
25 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
26 {
27 	return platform_dma_get_ops(NULL);
28 }
29 
30 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
31 {
32 	if (!dev->dma_mask)
33 		return 0;
34 
35 	return addr + size - 1 <= *dev->dma_mask;
36 }
37 
38 static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
39 {
40 	return paddr;
41 }
42 
43 static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
44 {
45 	return daddr;
46 }
47 
48 #endif /* _ASM_IA64_DMA_MAPPING_H */
49