include/asm-ia64/dma-mapping.h

   1 #ifndef _ASM_IA64_DMA_MAPPING_H
   2 #define _ASM_IA64_DMA_MAPPING_H
   3
   4 /*
   5  * Copyright (C) 2003-2004 Hewlett-Packard Co
   6  *      David Mosberger-Tang <davidm@hpl.hp.com>
   7  */
   8 #include <asm/machvec.h>
   9
  10 #define dma_alloc_coherent      platform_dma_alloc_coherent
  11 /* coherent mem. is cheap */
  12 static inline void *
  13 dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
  14                       gfp_t flag)
  15 {
  16         return dma_alloc_coherent(dev, size, dma_handle, flag);
  17 }
  18 #define dma_free_coherent       platform_dma_free_coherent
  19 static inline void
  20 dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
  21                      dma_addr_t dma_handle)
  22 {
  23         dma_free_coherent(dev, size, cpu_addr, dma_handle);
  24 }
  25 #define dma_map_single          platform_dma_map_single
  26 #define dma_map_sg              platform_dma_map_sg
  27 #define dma_unmap_single        platform_dma_unmap_single
  28 #define dma_unmap_sg            platform_dma_unmap_sg
  29 #define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
  30 #define dma_sync_sg_for_cpu     platform_dma_sync_sg_for_cpu
  31 #define dma_sync_single_for_device platform_dma_sync_single_for_device
  32 #define dma_sync_sg_for_device  platform_dma_sync_sg_for_device
  33 #define dma_mapping_error       platform_dma_mapping_error
  34
  35 #define dma_map_page(dev, pg, off, size, dir)                           \
  36         dma_map_single(dev, page_address(pg) + (off), (size), (dir))
  37 #define dma_unmap_page(dev, dma_addr, size, dir)                        \
  38         dma_unmap_single(dev, dma_addr, size, dir)
  39
  40 /*
  41  * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
  42  * See Documentation/DMA-API.txt for details.
  43  */
  44
  45 #define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \
  46         dma_sync_single_for_cpu(dev, dma_handle, size, dir)
  47 #define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \
  48         dma_sync_single_for_device(dev, dma_handle, size, dir)
  49
  50 #define dma_supported           platform_dma_supported
  51
  52 static inline int
  53 dma_set_mask (struct device *dev, u64 mask)
  54 {
  55         if (!dev->dma_mask || !dma_supported(dev, mask))
  56                 return -EIO;
  57         *dev->dma_mask = mask;
  58         return 0;
  59 }
  60
  61 extern int dma_get_cache_alignment(void);
  62
  63 static inline void
  64 dma_cache_sync (struct device *dev, void *vaddr, size_t size,
  65         enum dma_data_direction dir)
  66 {
  67         /*
  68          * IA-64 is cache-coherent, so this is mostly a no-op.  However, we do need to
  69          * ensure that dma_cache_sync() enforces order, hence the mb().
  70          */
  71         mb();
  72 }
  73
  74 #define dma_is_consistent(d, h) (1)     /* all we do is coherent memory... */
  75
  76 #endif /* _ASM_IA64_DMA_MAPPING_H */