2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2003 - 2005 Tensilica Inc.
7 * Copyright (C) 2015 Cadence Design Systems Inc.
10 #ifndef _XTENSA_DMA_MAPPING_H
11 #define _XTENSA_DMA_MAPPING_H
13 #include <asm/cache.h>
16 #include <asm-generic/dma-coherent.h>
19 #include <linux/scatterlist.h>
21 #define DMA_ERROR_CODE (~(dma_addr_t)0x0)
23 extern struct dma_map_ops xtensa_dma_map_ops
;
25 static inline struct dma_map_ops
*get_dma_ops(struct device
*dev
)
27 if (dev
&& dev
->archdata
.dma_ops
)
28 return dev
->archdata
.dma_ops
;
30 return &xtensa_dma_map_ops
;
33 #include <asm-generic/dma-mapping-common.h>
35 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
36 #define dma_free_noncoherent(d, s, v, h) dma_free_attrs(d, s, v, h, NULL)
39 dma_mapping_error(struct device
*dev
, dma_addr_t dma_addr
)
41 struct dma_map_ops
*ops
= get_dma_ops(dev
);
43 debug_dma_mapping_error(dev
, dma_addr
);
44 return ops
->mapping_error(dev
, dma_addr
);
48 dma_supported(struct device
*dev
, u64 mask
)
54 dma_set_mask(struct device
*dev
, u64 mask
)
56 if(!dev
->dma_mask
|| !dma_supported(dev
, mask
))
59 *dev
->dma_mask
= mask
;
64 void dma_cache_sync(struct device
*dev
, void *vaddr
, size_t size
,
65 enum dma_data_direction direction
);
67 #endif /* _XTENSA_DMA_MAPPING_H */