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815dd18788
Introduce a new architecture-specific get_arch_dma_ops() function that takes a struct bus_type * argument. Add get_dma_ops() in <linux/dma-mapping.h>. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Juergen Gross <jgross@suse.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Russell King <linux@armlinux.org.uk> Cc: x86@kernel.org Signed-off-by: Doug Ledford <dledford@redhat.com>
30 lines
784 B
C
30 lines
784 B
C
/*
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* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
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* Copyright (C) 2009 Wind River Systems Inc
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*/
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#ifndef _ASM_NIOS2_DMA_MAPPING_H
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#define _ASM_NIOS2_DMA_MAPPING_H
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extern const struct dma_map_ops nios2_dma_ops;
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static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
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{
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return &nios2_dma_ops;
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}
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/*
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* dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to
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* do any flushing here.
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*/
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static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction direction)
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{
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}
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#endif /* _ASM_NIOS2_DMA_MAPPING_H */
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