From 10c9c10c31514564b09c153432a42ffaea3ce831 Mon Sep 17 00:00:00 2001 From: GuanXuetao Date: Sat, 15 Jan 2011 18:18:29 +0800 Subject: unicore32 core architecture: mm related: consistent device DMA handling This patch implements consistent device DMA handling of memory management. DMA device operations are also here. Signed-off-by: Guan Xuetao Reviewed-by: Arnd Bergmann --- arch/unicore32/mm/dma-swiotlb.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 arch/unicore32/mm/dma-swiotlb.c (limited to 'arch/unicore32/mm/dma-swiotlb.c') diff --git a/arch/unicore32/mm/dma-swiotlb.c b/arch/unicore32/mm/dma-swiotlb.c new file mode 100644 index 000000000000..bfa9fbb2bbb1 --- /dev/null +++ b/arch/unicore32/mm/dma-swiotlb.c @@ -0,0 +1,34 @@ +/* + * Contains routines needed to support swiotlb for UniCore32. + * + * Copyright (C) 2010 Guan Xuetao + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include +#include +#include +#include +#include +#include + +#include + +struct dma_map_ops swiotlb_dma_map_ops = { + .alloc_coherent = swiotlb_alloc_coherent, + .free_coherent = swiotlb_free_coherent, + .map_sg = swiotlb_map_sg_attrs, + .unmap_sg = swiotlb_unmap_sg_attrs, + .dma_supported = swiotlb_dma_supported, + .map_page = swiotlb_map_page, + .unmap_page = swiotlb_unmap_page, + .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, + .mapping_error = swiotlb_dma_mapping_error, +}; +EXPORT_SYMBOL(swiotlb_dma_map_ops); -- cgit