Date: Wed, 22 Jan 1997 19:36:11 +1100 From: Bruce Evans <bde@zeta.org.au> To: current@freebsd.org, hackers@freebsd.org, sysseh@devetir.qld.gov.au Subject: Re: Mmaping device space into user space Message-ID: <199701220836.TAA10401@godzilla.zeta.org.au>
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>I'm fooling around with some of the sound device drivers, and I'm wanting to >know how to mmap some of the DMA buffers that they use into user space. Any >clues? See scmmap() in syscons.c. Mmaping in device drivers is very easy if the memory is contiguous, page-aligned and never freed. Bruce
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