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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
25 lines
559 B
C
25 lines
559 B
C
#ifndef _ASM_DMA_MAPPING_H
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#define _ASM_DMA_MAPPING_H
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#include <asm/cache.h>
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#include <asm/cacheflush.h>
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extern unsigned long __nongprelbss dma_coherent_mem_start;
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extern unsigned long __nongprelbss dma_coherent_mem_end;
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extern const struct dma_map_ops frv_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 &frv_dma_ops;
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}
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static inline
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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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flush_write_buffers();
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}
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#endif /* _ASM_DMA_MAPPING_H */
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