2 * DMA operations for the Hexagon architecture
4 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 and
8 * only version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #ifndef _ASM_DMA_MAPPING_H
22 #define _ASM_DMA_MAPPING_H
24 #include <linux/types.h>
25 #include <linux/cache.h>
27 #include <linux/scatterlist.h>
28 #include <linux/dma-debug.h>
29 #include <linux/dma-attrs.h>
33 extern int bad_dma_address;
34 #define DMA_ERROR_CODE bad_dma_address
36 extern struct dma_map_ops *dma_ops;
38 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
40 if (unlikely(dev == NULL))
46 #define HAVE_ARCH_DMA_SUPPORTED 1
47 extern int dma_supported(struct device *dev, u64 mask);
48 extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
49 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
50 enum dma_data_direction direction);
52 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
56 return addr + size - 1 <= *dev->dma_mask;