4 * Linux architectural port borrowing liberally from similar works of
5 * others. All original copyrights apply as per the original source
8 * OpenRISC implementation:
9 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
17 #ifndef __ASM_OPENRISC_DMA_MAPPING_H
18 #define __ASM_OPENRISC_DMA_MAPPING_H
21 * See Documentation/DMA-API-HOWTO.txt and
22 * Documentation/DMA-API.txt for documentation.
25 #include <linux/dma-debug.h>
26 #include <linux/kmemcheck.h>
27 #include <linux/dma-mapping.h>
29 #define DMA_ERROR_CODE (~(dma_addr_t)0x0)
31 extern struct dma_map_ops or1k_dma_map_ops;
33 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
35 return &or1k_dma_map_ops;
38 #define HAVE_ARCH_DMA_SUPPORTED 1
39 static inline int dma_supported(struct device *dev, u64 dma_mask)
41 /* Support 32 bit DMA mask exclusively */
42 return dma_mask == DMA_BIT_MASK(32);
45 #endif /* __ASM_OPENRISC_DMA_MAPPING_H */