Date: Thu, 4 Aug 2005 16:21:18 +0800 From: Yuka Muromachi <yuka.muromachi@gmail.com> To: freebsd-multimedia@freebsd.org Subject: Re: How alloc non-cache type memory? Message-ID: <c5c27980050804012142dd7994@mail.gmail.com> In-Reply-To: <c5c27980050804011756d8e8d9@mail.gmail.com> References: <c5c27980050804003749c56a96@mail.gmail.com> <20050804080649.C23F915EB042@gabi-n.hauN.org> <c5c27980050804011756d8e8d9@mail.gmail.com>
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2005/8/4, Yuka Muromachi <yuka.muromachi@gmail.com>: > >2005/8/4, TAMURA Kent <kent@netbsd.org>: > > In message "How alloc non-cache type memory?" > > on 05/08/04, Yuka Muromachi <yuka.muromachi@gmail.com> writes: > > > 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. > Sorry, but I have no see this flag in FreeBSD 5.4 kernel. > The nVidia MCP51 Azalia controoler made some trouble... 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
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