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ec3cf2ece2
This patch includes the basic infrastructure to use swiotlb bounce buffering on 32-bit powerpc. It is not yet enabled on any platforms. Probably the most interesting bit is the addition of addr_needs_map to dma_ops - we need this as a dma_op because the decision of whether or not an addr can be mapped by a device is device-specific. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
28 lines
779 B
C
28 lines
779 B
C
/*
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* Copyright (C) 2009 Becky Bruce, Freescale Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __ASM_SWIOTLB_H
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#define __ASM_SWIOTLB_H
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#include <linux/swiotlb.h>
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extern struct dma_mapping_ops swiotlb_dma_ops;
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extern struct dma_mapping_ops swiotlb_pci_dma_ops;
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int swiotlb_arch_address_needs_mapping(struct device *, dma_addr_t,
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size_t size);
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static inline void dma_mark_clean(void *addr, size_t size) {}
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extern unsigned int ppc_swiotlb_enable;
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int __init swiotlb_setup_bus_notifier(void);
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#endif /* __ASM_SWIOTLB_H */
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