| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2012 ARM Ltd. |
| */ |
| #ifndef __ASM_DMA_MAPPING_H |
| #define __ASM_DMA_MAPPING_H |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/types.h> |
| #include <linux/vmalloc.h> |
| |
| #include <xen/xen.h> |
| #include <asm/xen/hypervisor.h> |
| |
| static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) |
| { |
| return NULL; |
| } |
| |
| /* |
| * Do not use this function in a driver, it is only provided for |
| * arch/arm/mm/xen.c, which is used by arm64 as well. |
| */ |
| static inline bool is_device_dma_coherent(struct device *dev) |
| { |
| return dev->dma_coherent; |
| } |
| |
| #endif /* __KERNEL__ */ |
| #endif /* __ASM_DMA_MAPPING_H */ |
