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

   1 #ifndef _ASM_S390_DMA_MAPPING_H
   2 #define _ASM_S390_DMA_MAPPING_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/types.h>
   6 #include <linux/mm.h>
   7 #include <linux/scatterlist.h>
   8 #include <linux/dma-attrs.h>
   9 #include <linux/dma-debug.h>
  10 #include <linux/io.h>
  11
  12 #define DMA_ERROR_CODE          (~(dma_addr_t) 0x0)
  13
  14 extern struct dma_map_ops s390_pci_dma_ops;
  15
  16 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
  17 {
  18         if (dev && dev->archdata.dma_ops)
  19                 return dev->archdata.dma_ops;
  20         return &dma_noop_ops;
  21 }
  22
  23 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  24                                   enum dma_data_direction direction)
  25 {
  26 }
  27
  28 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
  29 {
  30         if (!dev->dma_mask)
  31                 return false;
  32         return addr + size - 1 <= *dev->dma_mask;
  33 }
  34
  35 #endif /* _ASM_S390_DMA_MAPPING_H */