Date: Sun, 14 Dec 1997 19:54:28 -0700 From: "Justin T. Gibbs" <gibbs@plutotech.com> To: Chris Csanady <ccsanady@bob.scl.ameslab.gov> Cc: "Justin T. Gibbs" <gibbs@plutotech.com>, John-Mark Gurney <gurney_j@resnet.uoregon.edu>, hackers@FreeBSD.ORG Subject: Re: Bus/Processor specific I/O methods - was Re: Beginning SPARC port Message-ID: <199712150256.TAA27503@pluto.plutotech.com> In-Reply-To: Your message of "Sun, 14 Dec 1997 18:45:56 CST." <199712150045.SAA14933@bob.scl.ameslab.gov>
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> >FWIW, NetBSD has a couple of nice man pages on their bus stuff. See >bus_space(9) and bus_dma(9). It looks like a well abstracted interface, >and works on several architectures. We really should be looking at ways >to make the BSD's more similar whenever possible. Making the drivers >more portable would especially be nice.. so I think that this issue >definately deserves more thought. > >Chris Although the bus.h stuff I did for CAM is taken pretty much verbatum from NetBSD, I did not implement bus DMA in the same fashion. The interface was changed slightly to make it more space efficient. -- Justin
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