Date: Wed, 21 Dec 2016 16:02:53 +0000 From: Ruslan Bukin <ruslan.bukin@cl.cam.ac.uk> To: John Baldwin <jhb@freebsd.org> Cc: Ruslan Bukin <br@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r310330 - in head: share/man/man4 sys/conf sys/dev/xdma Message-ID: <20161221160253.GA4455@bsdpad.com> In-Reply-To: <1904181.V85ZRTRTAB@ralph.baldwin.cx> References: <201612201802.uBKI27oN091165@repo.freebsd.org> <1904181.V85ZRTRTAB@ralph.baldwin.cx>
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On Tue, Dec 20, 2016 at 12:50:11PM -0800, John Baldwin wrote: > On Tuesday, December 20, 2016 06:02:07 PM Ruslan Bukin wrote: > > Author: br > > Date: Tue Dec 20 18:02:07 2016 > > New Revision: 310330 > > URL: https://svnweb.freebsd.org/changeset/base/310330 > > > > Log: > > Add xDMA -- the DMA abstraction layer, initial verison. > > > > xDMA is a DMA framework designed to abstract the interaction > > between device drivers and DMA engines. > > > > Project wiki: https://wiki.freebsd.org/xdma > > > > Sponsored by: DARPA, AFRL > > Differential Revision: https://reviews.freebsd.org/D8807 > > It probably would have been a good idea to get some design review of this on > arch@ before committing. In particular, I believe from earlier discussions > that you want to build a general framework that things like ioat(4) can hook > into. arch@ would give you a broader audience for working out the > abstractions and interfaces. > Yep, you probably right. I found lack of interest from the list of reviewers I added on phabricator, so decided to go, but may be list was not 100% pervasive. Anyway it is just 673 lines of code and I continue working on it. I plan to add scatter-gathering type of transfer and SoftDMA(®) driver, so any review of this or upcoming changes would be appreciated. Ruslan
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