projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
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 | */ | |
| 1da177e4 | 9 | #include <asm/machvec.h> |
| 9b6eccfc | 10 | #include <linux/scatterlist.h> |
| 62fdd767 | 11 | #include <asm/swiotlb.h> |
| 99162195 | 12 | #include <linux/dma-debug.h> |
| 62fdd767 | 13 | |
| 175add19 JK |
14 | #define ARCH_HAS_DMA_GET_REQUIRED_MASK |
| 15 | ||
| 5299709d | 16 | extern const struct dma_map_ops *dma_ops; |
| 62fdd767 FY |
17 | extern struct ia64_machine_vector ia64_mv; |
| 18 | extern void set_iommu_machvec(void); | |
| 1da177e4 | 19 | |
| c2990307 FT |
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 | ||
| 815dd187 BVA |
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 | } | |
| b7ea6e95 | 29 | |
| a0b00ca8 FT |
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 | ||
| ac2b3e67 | 35 | return addr + size - 1 <= *dev->dma_mask; |
| a0b00ca8 FT |
36 | } |
| 37 | ||
| 8d4f5339 FT |
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 | ||
| 1da177e4 | 48 | #endif /* _ASM_IA64_DMA_MAPPING_H */ |