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782e6769 CH |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_DMA_NONCOHERENT_H | |
3 | #define _LINUX_DMA_NONCOHERENT_H 1 | |
4 | ||
5 | #include <linux/dma-mapping.h> | |
6 | ||
7 | void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, | |
8 | gfp_t gfp, unsigned long attrs); | |
9 | void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, | |
10 | dma_addr_t dma_addr, unsigned long attrs); | |
11 | ||
12 | #ifdef CONFIG_DMA_NONCOHERENT_MMAP | |
13 | int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma, | |
14 | void *cpu_addr, dma_addr_t dma_addr, size_t size, | |
15 | unsigned long attrs); | |
16 | #else | |
17 | #define arch_dma_mmap NULL | |
18 | #endif /* CONFIG_DMA_NONCOHERENT_MMAP */ | |
19 | ||
20 | #ifdef CONFIG_DMA_NONCOHERENT_CACHE_SYNC | |
21 | void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size, | |
22 | enum dma_data_direction direction); | |
23 | #else | |
24 | #define arch_dma_cache_sync NULL | |
25 | #endif /* CONFIG_DMA_NONCOHERENT_CACHE_SYNC */ | |
26 | ||
27 | #ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE | |
28 | void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr, | |
29 | size_t size, enum dma_data_direction dir); | |
30 | #else | |
31 | static inline void arch_sync_dma_for_device(struct device *dev, | |
32 | phys_addr_t paddr, size_t size, enum dma_data_direction dir) | |
33 | { | |
34 | } | |
35 | #endif /* ARCH_HAS_SYNC_DMA_FOR_DEVICE */ | |
36 | ||
37 | #ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU | |
38 | void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr, | |
39 | size_t size, enum dma_data_direction dir); | |
40 | #else | |
41 | static inline void arch_sync_dma_for_cpu(struct device *dev, | |
42 | phys_addr_t paddr, size_t size, enum dma_data_direction dir) | |
43 | { | |
44 | } | |
45 | #endif /* ARCH_HAS_SYNC_DMA_FOR_CPU */ | |
46 | ||
47 | #endif /* _LINUX_DMA_NONCOHERENT_H */ |