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