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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3715863aa1
iommu_is_span_boundary is used internally in the IOMMU helper (lib/iommu-helper.c), a primitive function that judges whether a memory area spans LLD's segment boundary or not. It's difficult to convert some IOMMUs to use the IOMMU helper but iommu_is_span_boundary is still useful for them. So this patch exports it. This is needed for the parisc iommu fixes. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 lines
461 B
C
11 lines
461 B
C
extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
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unsigned long shift,
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unsigned long boundary_size);
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extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
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unsigned long start, unsigned int nr,
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unsigned long shift,
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unsigned long boundary_size,
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unsigned long align_mask);
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extern void iommu_area_free(unsigned long *map, unsigned long start,
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unsigned int nr);
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