7c18341665
It's initially 0, since we don't expect any DMA there. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
26 lines
528 B
C
26 lines
528 B
C
#ifndef _X8664_DMA_MAPPING_H
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#define _X8664_DMA_MAPPING_H 1
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extern int iommu_merge;
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static inline int dma_mapping_error(dma_addr_t dma_addr)
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{
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if (dma_ops->mapping_error)
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return dma_ops->mapping_error(dma_addr);
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return (dma_addr == bad_dma_address);
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}
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/* same for gart, swiotlb, and nommu */
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static inline int dma_get_cache_alignment(void)
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{
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return boot_cpu_data.x86_clflush_size;
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}
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#define dma_is_consistent(d, h) 1
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extern struct device fallback_dev;
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extern int panic_on_overflow;
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#endif /* _X8664_DMA_MAPPING_H */
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