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 <linux/config.h>
   9 #include <asm/machvec.h>
  10
  11 #define dma_alloc_coherent      platform_dma_alloc_coherent
  12 #define dma_alloc_noncoherent   platform_dma_alloc_coherent     /* coherent mem. is cheap */
  13 #define dma_free_coherent       platform_dma_free_coherent
  14 #define dma_free_noncoherent    platform_dma_free_coherent
  15 #define dma_map_single          platform_dma_map_single
  16 #define dma_map_sg              platform_dma_map_sg
  17 #define dma_unmap_single        platform_dma_unmap_single
  18 #define dma_unmap_sg            platform_dma_unmap_sg
  19 #define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
  20 #define dma_sync_sg_for_cpu     platform_dma_sync_sg_for_cpu
  21 #define dma_sync_single_for_device platform_dma_sync_single_for_device
  22 #define dma_sync_sg_for_device  platform_dma_sync_sg_for_device
  23 #define dma_mapping_error       platform_dma_mapping_error
  24
  25 #define dma_map_page(dev, pg, off, size, dir)                           \
  26         dma_map_single(dev, page_address(pg) + (off), (size), (dir))
  27 #define dma_unmap_page(dev, dma_addr, size, dir)                        \
  28         dma_unmap_single(dev, dma_addr, size, dir)
  29
  30 /*
  31  * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
  32  * See Documentation/DMA-API.txt for details.
  33  */
  34
  35 #define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \
  36         dma_sync_single_for_cpu(dev, dma_handle, size, dir)
  37 #define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \
  38         dma_sync_single_for_device(dev, dma_handle, size, dir)
  39
  40 #define dma_supported           platform_dma_supported
  41
  42 static inline int
  43 dma_set_mask (struct device *dev, u64 mask)
  44 {
  45         if (!dev->dma_mask || !dma_supported(dev, mask))
  46                 return -EIO;
  47         *dev->dma_mask = mask;
  48         return 0;
  49 }
  50
  51 static inline int
  52 dma_get_cache_alignment (void)
  53 {
  54         extern int ia64_max_cacheline_size;
  55         return ia64_max_cacheline_size;
  56 }
  57
  58 static inline void
  59 dma_cache_sync (void *vaddr, size_t size, enum dma_data_direction dir)
  60 {
  61         /*
  62          * IA-64 is cache-coherent, so this is mostly a no-op.  However, we do need to
  63          * ensure that dma_cache_sync() enforces order, hence the mb().
  64          */
  65         mb();
  66 }
  67
  68 #define dma_is_consistent(dma_handle)   (1)     /* all we do is coherent memory... */
  69
  70 #endif /* _ASM_IA64_DMA_MAPPING_H */