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>
32 extern int bad_dma_address
;
33 #define DMA_ERROR_CODE bad_dma_address
35 extern struct dma_map_ops
*dma_ops
;
37 static inline struct dma_map_ops
*get_dma_ops(struct device
*dev
)
39 if (unlikely(dev
== NULL
))
45 #define HAVE_ARCH_DMA_SUPPORTED 1
46 extern int dma_supported(struct device
*dev
, u64 mask
);
47 extern int dma_is_consistent(struct device
*dev
, dma_addr_t dma_handle
);
48 extern void dma_cache_sync(struct device
*dev
, void *vaddr
, size_t size
,
49 enum dma_data_direction direction
);
51 static inline bool dma_capable(struct device
*dev
, dma_addr_t addr
, size_t size
)
55 return addr
+ size
- 1 <= *dev
->dma_mask
;