diff options
Diffstat (limited to 'include/asm-generic/dma-mapping.h')
| -rw-r--r-- | include/asm-generic/dma-mapping.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-generic/dma-mapping.h b/include/asm-generic/dma-mapping.h new file mode 100644 index 000000000..ad2868263 --- /dev/null +++ b/include/asm-generic/dma-mapping.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_GENERIC_DMA_MAPPING_H +#define _ASM_GENERIC_DMA_MAPPING_H + +static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) +{ + /* + * Use the non-coherent ops if available. If an architecture wants a + * more fine-grained selection of operations it will have to implement + * get_arch_dma_ops itself or use the per-device dma_ops. + */ +#ifdef CONFIG_DMA_NONCOHERENT_OPS + return &dma_noncoherent_ops; +#else + return &dma_direct_ops; +#endif +} + +#endif /* _ASM_GENERIC_DMA_MAPPING_H */ |