From owner-svn-src-all@freebsd.org Wed Dec 21 16:04:22 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E1C02C8AEDA; Wed, 21 Dec 2016 16:04:22 +0000 (UTC) (envelope-from rb743@hermes.cam.ac.uk) Received: from ppsw-43.csi.cam.ac.uk (ppsw-43.csi.cam.ac.uk [131.111.8.143]) by mx1.freebsd.org (Postfix) with ESMTP id AD3EE18FF; Wed, 21 Dec 2016 16:04:22 +0000 (UTC) (envelope-from rb743@hermes.cam.ac.uk) X-Cam-AntiVirus: no malware found X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus Received: from sc1.bsdpad.com ([163.172.212.18]:16575) by ppsw-43.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.159]:587) with esmtpsa (LOGIN:rb743) (TLSv1:ECDHE-RSA-AES256-SHA:256) id 1cJjNH-000328-mT (Exim 4.86_36-e07b163) (return-path ); Wed, 21 Dec 2016 16:04:15 +0000 Date: Wed, 21 Dec 2016 16:02:53 +0000 From: Ruslan Bukin To: John Baldwin Cc: Ruslan Bukin , 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> References: <201612201802.uBKI27oN091165@repo.freebsd.org> <1904181.V85ZRTRTAB@ralph.baldwin.cx> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1904181.V85ZRTRTAB@ralph.baldwin.cx> User-Agent: Mutt/1.6.1 (2016-04-27) Sender: "R. Bukin" X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Dec 2016 16:04:23 -0000 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