Date: Tue, 5 Jan 1999 10:11:34 -0800 (PST) From: Matthew Jacob <mjacob@feral.com> To: Doug Rabson <dfr@nlsystems.com> Cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>, Warner Losh <imp@village.org>, Bill Paul <wpaul@skynet.ctr.columbia.edu>, current@FreeBSD.ORG Subject: Re: bus_space_foo and bus_dmamap_foo Message-ID: <Pine.LNX.4.04.9901051010170.21476-100000@feral-gw> In-Reply-To: <Pine.BSF.4.01.9901051806230.391-100000@herring.nlsystems.com>
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> > > > Sounds like the Solaris DKI/DDI. Will you be making the bus_space handles > > hierarchical and bidirectional? That is, you can do bus_space_XXX for > > a CPU's access to i/o or memory space on a PCI device, but can you also > > see about a PCI device's view of memory (or another PCI device) such that > > dma handles are managed similarily? > > I'm not sure that this fits with the existing bus_dma apis which we have > taken from NetBSD. I wasn't planning to change that api much if at all. No, it doesn't fit with the existing NetBSD model. > It does make sense for the two to be at least similar though. To quote Eric Allman, "Well, *I* would certainly think so". -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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