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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.Hawaii.Edu!news.uoregon.edu!news.texoma.com!www.nntp.primenet.com!nntp.primenet.com!news.mathworks.com!fu-berlin.de!irz401!orion.sax.de!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: DMA Date: 17 Nov 1996 08:52:11 GMT Organization: Private BSD site, Dresden Lines: 18 Message-ID: <56mjnr$b4a@uriah.heep.sax.de> References: <328C8861.48A3@mercurio.uc.pt> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Filipe Araujo <filipius@mercurio.uc.pt> wrote: > I'm writing a device driver for a network device on FreeBSD, > but I don't know how to program DMA. What DMA? ISA motherboard DMA? See the isa_dma_* functions in sys/i386/isa/isa.c. Busmaster DMA is more tricky. I don't think there's a description available yet... Perhaps you should bug the developers to write one, and volunteer to contribute man pages for the PCI DMA handling. :) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)