dffbfde758
Switch the simple cache coherent architectures that don't require any DMA address translation to dma_direct_ops. We'll soon use at least parts of the direct DMA ops implementation for all platforms, so select the symbol globally. Signed-off-by: Christoph Hellwig <hch@lst.de> Patchwork: https://patchwork.linux-mips.org/patch/19540/ Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: David Daney <david.daney@cavium.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de> Cc: Huacai Chen <chenhc@lemote.com> Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org
38 lines
947 B
C
38 lines
947 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_DMA_MAPPING_H
|
|
#define _ASM_DMA_MAPPING_H
|
|
|
|
#include <linux/scatterlist.h>
|
|
#include <asm/dma-coherence.h>
|
|
#include <asm/cache.h>
|
|
|
|
#ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
|
|
#include <dma-coherence.h>
|
|
#endif
|
|
|
|
extern const struct dma_map_ops mips_default_dma_map_ops;
|
|
extern const struct dma_map_ops mips_swiotlb_ops;
|
|
|
|
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
|
|
{
|
|
#ifdef CONFIG_SWIOTLB
|
|
return &mips_swiotlb_ops;
|
|
#elif defined(CONFIG_MIPS_DMA_DEFAULT)
|
|
return &mips_default_dma_map_ops;
|
|
#else
|
|
return &dma_direct_ops;
|
|
#endif
|
|
}
|
|
|
|
#define arch_setup_dma_ops arch_setup_dma_ops
|
|
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
|
|
u64 size, const struct iommu_ops *iommu,
|
|
bool coherent)
|
|
{
|
|
#ifdef CONFIG_DMA_PERDEV_COHERENT
|
|
dev->archdata.dma_coherent = coherent;
|
|
#endif
|
|
}
|
|
|
|
#endif /* _ASM_DMA_MAPPING_H */
|