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 /*
  13  * Arch extensions to struct device.
  14  *
  15  * When adding fields, consider macio_add_one_device in
  16  * drivers/macintosh/macio_asic.c
  17  */
  18 struct dev_archdata {
  19         /* DMA operations on that device */
  20         struct dma_map_ops      *dma_ops;
  21
  22         /*
  23          * When an iommu is in use, dma_data is used as a ptr to the base of the
  24          * iommu_table.  Otherwise, it is a simple numerical offset.
  25          */
  26         union {
  27                 dma_addr_t      dma_offset;
  28                 void            *iommu_table_base;
  29         } dma_data;
  30
  31 #ifdef CONFIG_IOMMU_API
  32         void                    *iommu_domain;
  33 #endif
  34 #ifdef CONFIG_SWIOTLB
  35         dma_addr_t              max_direct_dma_addr;
  36 #endif
  37 #ifdef CONFIG_EEH
  38         struct eeh_dev          *edev;
  39 #endif
  40 #ifdef CONFIG_FAIL_IOMMU
  41         int fail_iommu;
  42 #endif
  43 };
  44
  45 struct pdev_archdata {
  46         u64 dma_mask;
  47 };
  48
  49 #define ARCH_HAS_DMA_GET_REQUIRED_MASK
  50
  51 #endif /* _ASM_POWERPC_DEVICE_H */