arch/s390/include/asm/dma-mapping.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_S390_DMA_MAPPING_H
   3 #define _ASM_S390_DMA_MAPPING_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/types.h>
   7 #include <linux/mm.h>
   8 #include <linux/scatterlist.h>
   9 #include <linux/dma-debug.h>
  10 #include <linux/io.h>
  11
  12 extern const struct dma_map_ops s390_pci_dma_ops;
  13
  14 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
  15 {
  16         return &dma_noop_ops;
  17 }
  18
  19 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  20                                   enum dma_data_direction direction)
  21 {
  22 }
  23
  24 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
  25 {
  26         if (!dev->dma_mask)
  27                 return false;
  28         return addr + size - 1 <= *dev->dma_mask;
  29 }
  30
  31 #endif /* _ASM_S390_DMA_MAPPING_H */