From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: [RFC] [PATCH 0/3] ioat: DMA engine support Date: Wed, 23 Nov 2005 23:02:50 +0000 Message-ID: <1132786970.13095.35.camel@localhost.localdomain> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, john.ronciak@intel.com, christopher.leech@intel.com Return-path: To: Andrew Grover In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Mer, 2005-11-23 at 12:26 -0800, Andrew Grover wrote: > early next year. Until then, the code doesn't really *do* anything, but we > wanted to release what we could right away, and start getting some > feedback. First comment partly based on Jeff Garziks comments - if you added an "operation" to the base functions and an operation mask to the DMA engines it becomes possible to support engines that can do other ops (eg abusing an NCR53c8xx for both copy and clear). Second one - you obviously tested this somehow, was that all done by simulation or do you have a "CPU" memcpy test engine for use before the hardware pops up ?