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 #define dma_alloc_noncoherent   platform_dma_alloc_coherent     /* coherent mem. is cheap */
  12 #define dma_free_coherent       platform_dma_free_coherent
  13 #define dma_free_noncoherent    platform_dma_free_coherent
  14 #define dma_map_single          platform_dma_map_single
  15 #define dma_map_sg              platform_dma_map_sg
  16 #define dma_unmap_single        platform_dma_unmap_single
  17 #define dma_unmap_sg            platform_dma_unmap_sg
  18 #define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
  19 #define dma_sync_sg_for_cpu     platform_dma_sync_sg_for_cpu
  20 #define dma_sync_single_for_device platform_dma_sync_single_for_device
  21 #define dma_sync_sg_for_device  platform_dma_sync_sg_for_device
  22 #define dma_mapping_error       platform_dma_mapping_error
  23
  24 #define dma_map_page(dev, pg, off, size, dir)                           \
  25         dma_map_single(dev, page_address(pg) + (off), (size), (dir))
  26 #define dma_unmap_page(dev, dma_addr, size, dir)                        \
  27         dma_unmap_single(dev, dma_addr, size, dir)
  28
  29 /*
  30  * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
  31  * See Documentation/DMA-API.txt for details.
  32  */
  33
  34 #define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \
  35         dma_sync_single_for_cpu(dev, dma_handle, size, dir)
  36 #define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \
  37         dma_sync_single_for_device(dev, dma_handle, size, dir)
  38
  39 #define dma_supported           platform_dma_supported
  40
  41 static inline int
  42 dma_set_mask (struct device *dev, u64 mask)
  43 {
  44         if (!dev->dma_mask || !dma_supported(dev, mask))
  45                 return -EIO;
  46         *dev->dma_mask = mask;
  47         return 0;
  48 }
  49
  50 extern int dma_get_cache_alignment(void);
  51
  52 static inline void
  53 dma_cache_sync (void *vaddr, size_t size, enum dma_data_direction dir)
  54 {
  55         /*
  56          * IA-64 is cache-coherent, so this is mostly a no-op.  However, we do need to
  57          * ensure that dma_cache_sync() enforces order, hence the mb().
  58          */
  59         mb();
  60 }
  61
  62 #define dma_is_consistent(dma_handle)   (1)     /* all we do is coherent memory... */
  63
  64 #endif /* _ASM_IA64_DMA_MAPPING_H */