From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.228]) by ozlabs.org (Postfix) with ESMTP id 5221FDDF78 for ; Wed, 15 Apr 2009 07:45:31 +1000 (EST) Received: by rv-out-0506.google.com with SMTP id f9so3887893rvb.1 for ; Tue, 14 Apr 2009 14:45:29 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <49E4FED0.1020003@ovro.caltech.edu> References: <20090224000002.GA578@ovro.caltech.edu> <49E4FED0.1020003@ovro.caltech.edu> From: Grant Likely Date: Tue, 14 Apr 2009 15:45:14 -0600 Message-ID: Subject: Re: [RFC v2] virtio: add virtio-over-PCI driver To: David Hawkins Content-Type: text/plain; charset=ISO-8859-1 Cc: Arnd Bergmann , Jan-Bernd Themann , netdev@vger.kernel.org, Rusty Russell , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, Ira Snyder List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, Apr 14, 2009 at 3:23 PM, David Hawkins wrote: > I'll let Ira update you on the patch status. > > If you want someone to chat about the hardware-level interaction, > feel free to chat off-list - assuming of course that no one wants > to hear us talk hardware :) > > I selected the MPC8349EA in-part due to its PCI mailboxes, so > that we could implement this type of driver (an interlocked > handshake for flow control of data transfers). The previous > chip I'd used was a PLX PCI9054 Master/Target, and it has > similar registers. > > I'm not sure if the Xilinx PCI core, or whatever PCI core you > are using, already has something like the mailboxes implemented, > but if not, it won't take much to code up some logic. > I prefer VHDL myself, but can speak Verilog if forced to :) Thanks David. I haven't looked closely at the xilinx pci data sheet yet, but I don't expect too many issues in this area. As you say, it won't take much to code it up. I'll be poking my VHDL engineer to make it do what I want it to. :-) I'll keep you up to date on my progress. g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd.