| | 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 */ |
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