Document that boundaries cannot be smaller than the max segment size.

This commit is contained in:
Scott Long 2004-07-04 04:50:00 +00:00
parent 32889325b8
commit ab0b83b529

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@ -322,7 +322,8 @@ Boundary constraint, in bytes, of the target DMA memory region.
The boundary indicates the set of addresses, all multiples of the
boundary argument, that cannot be crossed by a single
.Vt bus_dma_segment_t .
The boundary must be a power of 2.
The boundary must be a power of 2 and must be no smaller that the
maximum segment size.
.Ql 0
indicates that there are no boundary restrictions.
.It Fa lowaddr