Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756464AbZDNVpn (ORCPT ); Tue, 14 Apr 2009 17:45:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753445AbZDNVpb (ORCPT ); Tue, 14 Apr 2009 17:45:31 -0400 Received: from rv-out-0506.google.com ([209.85.198.226]:19584 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752538AbZDNVpa (ORCPT ); Tue, 14 Apr 2009 17:45:30 -0400 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 Cc: Ira Snyder , Arnd Bergmann , Jan-Bernd Themann , netdev@vger.kernel.org, Rusty Russell , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1409 Lines: 35 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/