arch/powerpc/include/asm/device.h

   1 /*
   2  * Arch specific extensions to struct device
   3  *
   4  * This file is released under the GPLv2
   5  */
   6 #ifndef _ASM_POWERPC_DEVICE_H
   7 #define _ASM_POWERPC_DEVICE_H
   8
   9 struct dma_map_ops;
  10 struct device_node;
  11
  12 struct dev_archdata {
  13         /* Optional pointer to an OF device node */
  14         struct device_node      *of_node;
  15
  16         /* DMA operations on that device */
  17         struct dma_map_ops      *dma_ops;
  18
  19         /*
  20          * When an iommu is in use, dma_data is used as a ptr to the base of the
  21          * iommu_table.  Otherwise, it is a simple numerical offset.
  22          */
  23         union {
  24                 dma_addr_t      dma_offset;
  25                 void            *iommu_table_base;
  26         } dma_data;
  27
  28 #ifdef CONFIG_SWIOTLB
  29         dma_addr_t              max_direct_dma_addr;
  30 #endif
  31 };
  32
  33 static inline void dev_archdata_set_node(struct dev_archdata *ad,
  34                                          struct device_node *np)
  35 {
  36         ad->of_node = np;
  37 }
  38
  39 static inline struct device_node *
  40 dev_archdata_get_node(const struct dev_archdata *ad)
  41 {
  42         return ad->of_node;
  43 }
  44
  45 struct pdev_archdata {
  46 };
  47
  48 #endif /* _ASM_POWERPC_DEVICE_H */