Linux Kernel  3.7.1
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dma-swiotlb.c
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1 /*
2  * Contains routines needed to support swiotlb for UniCore32.
3  *
4  * Copyright (C) 2010 Guan Xuetao
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License as published by the
8  * Free Software Foundation; either version 2 of the License, or (at your
9  * option) any later version.
10  */
11 #include <linux/pci.h>
12 #include <linux/cache.h>
13 #include <linux/module.h>
14 #include <linux/dma-mapping.h>
15 #include <linux/swiotlb.h>
16 #include <linux/bootmem.h>
17 
18 #include <asm/dma.h>
19 
20 static void *unicore_swiotlb_alloc_coherent(struct device *dev, size_t size,
22  struct dma_attrs *attrs)
23 {
24  return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
25 }
26 
27 static void unicore_swiotlb_free_coherent(struct device *dev, size_t size,
28  void *vaddr, dma_addr_t dma_addr,
29  struct dma_attrs *attrs)
30 {
31  swiotlb_free_coherent(dev, size, vaddr, dma_addr);
32 }
33 
35  .alloc = unicore_swiotlb_alloc_coherent,
36  .free = unicore_swiotlb_free_coherent,
37  .map_sg = swiotlb_map_sg_attrs,
38  .unmap_sg = swiotlb_unmap_sg_attrs,
39  .dma_supported = swiotlb_dma_supported,
40  .map_page = swiotlb_map_page,
41  .unmap_page = swiotlb_unmap_page,
42  .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
43  .sync_single_for_device = swiotlb_sync_single_for_device,
44  .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
45  .sync_sg_for_device = swiotlb_sync_sg_for_device,
46  .mapping_error = swiotlb_dma_mapping_error,
47 };
48 EXPORT_SYMBOL(swiotlb_dma_map_ops);