arch/arm64/include/asm/dma-mapping.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2012 ARM Ltd.
   4  */
   5 #ifndef __ASM_DMA_MAPPING_H
   6 #define __ASM_DMA_MAPPING_H
   7
   8 #ifdef __KERNEL__
   9
  10 #include <linux/types.h>
  11 #include <linux/vmalloc.h>
  12
  13 #include <xen/xen.h>
  14 #include <asm/xen/hypervisor.h>
  15
  16 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
  17 {
  18         return NULL;
  19 }
  20
  21 /*
  22  * Do not use this function in a driver, it is only provided for
  23  * arch/arm/mm/xen.c, which is used by arm64 as well.
  24  */
  25 static inline bool is_device_dma_coherent(struct device *dev)
  26 {
  27         return dev->dma_coherent;
  28 }
  29
  30 #endif  /* __KERNEL__ */
  31 #endif  /* __ASM_DMA_MAPPING_H */