Date: Sun, 1 Feb 2009 21:37:54 +0100 From: Alexej Sokolov <bsd.quest@googlemail.com> To: freebsd-hackers@freebsd.org Subject: bus_dma (9). What exactly means "Loading of memory allocation" ? Message-ID: <671bb5fc0902011237j19dc7fc5o881649228c121bf2@mail.gmail.com>
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Hi,
at first the cut of text from man (9) bus_dma:
bus_dmamap_t
A machine-dependent opaque type describing an individual
mapping.
One map is used for each memory allocation that will be loaded.
Maps can be reused once they have been unloaded...
Question: What exactly means "Loading of memory allocation" in this context
?
Could anyone explain it or give me some little example with DMA functions
for understanding it.
Thanks a lot,
Alexej
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