| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 2003 - 2005 Tensilica Inc. |
| * Copyright (C) 2015 Cadence Design Systems Inc. |
| */ |
| |
| #ifndef _XTENSA_DMA_MAPPING_H |
| #define _XTENSA_DMA_MAPPING_H |
| |
| #include <asm/cache.h> |
| #include <asm/io.h> |
| |
| #include <asm-generic/dma-coherent.h> |
| |
| #include <linux/mm.h> |
| #include <linux/scatterlist.h> |
| |
| #define DMA_ERROR_CODE (~(dma_addr_t)0x0) |
| |
| extern struct dma_map_ops xtensa_dma_map_ops; |
| |
| static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| { |
| if (dev && dev->archdata.dma_ops) |
| return dev->archdata.dma_ops; |
| else |
| return &xtensa_dma_map_ops; |
| } |
| |
| #include <asm-generic/dma-mapping-common.h> |
| |
| static inline int |
| dma_supported(struct device *dev, u64 mask) |
| { |
| return 1; |
| } |
| |
| static inline int |
| dma_set_mask(struct device *dev, u64 mask) |
| { |
| if(!dev->dma_mask || !dma_supported(dev, mask)) |
| return -EIO; |
| |
| *dev->dma_mask = mask; |
| |
| return 0; |
| } |
| |
| void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
| enum dma_data_direction direction); |
| |
| #endif /* _XTENSA_DMA_MAPPING_H */ |