参照元

説明

参考

実装

static struct dma_map_ops swiotlb_dma_ops = {
        .alloc = __dma_alloc,
        .free = __dma_free,
        .mmap = __swiotlb_mmap,
        .get_sgtable = __swiotlb_get_sgtable,
        .map_page = __swiotlb_map_page,
        .unmap_page = __swiotlb_unmap_page,
        .map_sg = __swiotlb_map_sg_attrs,
        .unmap_sg = __swiotlb_unmap_sg_attrs,
        .sync_single_for_cpu = __swiotlb_sync_single_for_cpu,
        .sync_single_for_device = __swiotlb_sync_single_for_device,
        .sync_sg_for_cpu = __swiotlb_sync_sg_for_cpu,
        .sync_sg_for_device = __swiotlb_sync_sg_for_device,
        .dma_supported = swiotlb_dma_supported,
        .mapping_error = swiotlb_dma_mapping_error,
};

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