LXR linux/arch/unicore32/mm/dma-swiotlb.c

   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
  20static void *unicore_swiotlb_alloc_coherent(struct device *dev, size_t size,
  21                                            dma_addr_t *dma_handle, gfp_t flags,
  22                                            struct dma_attrs *attrs)
  23{
  24        return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
  25}
  26
  27static 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
  34struct dma_map_ops swiotlb_dma_map_ops = {
  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};
  48EXPORT_SYMBOL(swiotlb_dma_map_ops);
  49