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
arch_sync_dma_for_device(struct device * dev,phys_addr_t paddr,size_t size,enum dma_data_direction dir)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
arch_sync_dma_for_cpu(struct device * dev,phys_addr_t paddr,size_t size,enum dma_data_direction dir)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 #ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
48 void arch_sync_dma_for_cpu_all(struct device *dev);
49 #else
arch_sync_dma_for_cpu_all(struct device * dev)50 static inline void arch_sync_dma_for_cpu_all(struct device *dev)
51 {
52 }
53 #endif /* CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL */
54
55 #endif /* _LINUX_DMA_NONCOHERENT_H */
56