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From: TAMURA Kent <kent@NetBSD.org>
To: Yuka Muromachi <yuka.muromachi@gmail.com>, freebsd-multimedia@freebsd.org
In-reply-to: Yuka Muromachi's message of "Thu, 4 Aug 2005 16:21:18
	+0800"	<c5c27980050804012142dd7994@mail.gmail.com>
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Date: Thu,  4 Aug 2005 18:02:01 +0900 (JST)
Cc: 
Subject: Re: How alloc non-cache type memory?
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> > > > Is there any way to allocate Non-Cached type physical memory for dma
> > > > transfer in FreeBSD?
> > > BUS_DMA_NOCACHE flag for bus_dmamem_alloc(9) may perform it
> > > though FreeBSD/i386 does not support it.

> I'm sorry. I found BUS_DMA_NOCACHE flag in src/sys/sys/bus_dma.h,
> But it not implement in i386. It only used in sparc64/iommu.c

Right.  So you need to implement it in sys/i386/i386/busdma_machdep.c,
or call pmap functions directly in your driver.

-- 
TAMURA Kent <kent_2005 at hauN.org> <kent at NetBSD.org>


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