From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [for-next 4/6] net/mlx5: FPGA, Add basic support for Innova Date: Mon, 29 May 2017 09:31:31 -0600 Message-ID: <20170529153131.GB7924@obsidianresearch.com> References: <20170523114404.20387-1-saeedm@mellanox.com> <20170523114404.20387-5-saeedm@mellanox.com> <20170524165059.42lmrwzzcxvi2sf7@ast-mbp> <20170526030701.du4345mbprhcwjyi@ast-mbp> <20170526175624.5xxflpf24je5673h@ast-mbp> <20170526181517.GA3860@obsidianresearch.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ilan Tayari Cc: Alexei Starovoitov , Saeed Mahameed , "David S. Miller" , Doug Ledford , "netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "jsorensen-b10kYP2dOMg@public.gmane.org" , Andy Shevchenko , "linux-fpga-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Alan Tull , "yi1.li-VuQAYsv1563Yd54FQh9/CA@public.gmane.org" , Boris Pismenny List-Id: linux-rdma@vger.kernel.org On Sun, May 28, 2017 at 07:22:27AM +0000, Ilan Tayari wrote: > This is neither PCI-bar mapped, nor mailbox command. > The FPGA is indeed a bump-on-the-wire. > (It has I2C to the CX4 chip, but that is for debug purposes, and too slow > to perform real programming) Wait.. So if it truely has nothing to do with the existing mellanox driver, then nothing more than the fpga loader should be in the mlx5 directory? > One flavor of the product, the Innova Flex, allows customer logic in the > FPGA. But even then it is "wrapped" by Mellanox shell logic. > We plan to have an in-kernel API for writing client drivers for Innova > Flex. The FPGA subsystem already has APIs for partial reconfiguration use cases, you probably should not re-invent that under the mlx5 driver. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html