From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Date: Wed, 6 Dec 2017 13:30:15 +0800 From: Wu Hao Subject: Re: [PATCH v3 08/21] fpga: add Intel FPGA DFL PCIe device Message-ID: <20171206053015.GA19023@hao-dev> References: <1511764948-20972-1-git-send-email-hao.wu@intel.com> <1511764948-20972-9-git-send-email-hao.wu@intel.com> <20171128031519.GA25705@hao-dev> <20171205033330.GA19730@hao-dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: To: Alan Tull Cc: David Laight , "mdf@kernel.org" , "linux-fpga@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-api@vger.kernel.org" , "luwei.kang@intel.com" , "yi.z.zhang@intel.com" , Tim Whisonant , Enno Luebbers , Shiva Rao , Christopher Rauer , Xiao Guangrong List-ID: On Tue, Dec 05, 2017 at 11:00:22AM -0600, Alan Tull wrote: > On Mon, Dec 4, 2017 at 9:33 PM, Wu Hao wrote: > > On Mon, Dec 04, 2017 at 01:46:59PM -0600, Alan Tull wrote: > >> On Mon, Nov 27, 2017 at 9:15 PM, Wu Hao wrote: > >> > On Mon, Nov 27, 2017 at 10:28:04AM +0000, David Laight wrote: > >> >> From: Wu Hao > >> >> > Sent: 27 November 2017 06:42 > >> >> > From: Zhang Yi > >> >> > > >> >> > The Intel FPGA device appears as a PCIe device on the system. This patch > >> >> > implements the basic framework of the driver for Intel PCIe device which > >> >> > is located between CPU and Accelerated Function Units (AFUs), and has > >> >> > the Device Feature List (DFL) implemented in its MMIO space. > >> >> > >> >> This ought to have a better name than 'Intel FPGA'. > >> >> An fpga can be used for all sorts of things, this looks like > >> >> a very specific architecture using a common VHDL environment to > >> >> allow certain types of user VHDL be accessed over PCIe. > >> > > >> > Hi David > >> > > >> > This patch adds a pcie device driver for Intel FPGA devices which implements > >> > the DFL, e.g Intel Server Platform with In-package FPGA and Intel FPGA PCIe > >> > Acceleration Cards. They are pcie devices, and all have DFL implemented in > >> > the MMIO space, so we would like to use one kernel driver to handle them. > >> > > >> > With this full patchset, it just provides user the interfaces to configure > >> > and access the FPGA accelerators on Intel DFL based FPGA devices. For sure, > >> > users can develop and build their own logics via tools provided by Intel, > >> > program them to accelerators on these Intel FPGA devices, and access them > >> > for their workloads. > >> > >> I don't see anything Intel specific here. This could all be named dfl-* > > > > The maybe some device specific things, e.g Intel FPGA devices supported by this > > driver always have FME DFL at the beginning on the BAR0 for PF device. > > > > But I think this should be the right direction for better code reuse, it could > > save efforts for other vendors who want to use DFL and follow the same way. > > > > Thanks for the comments. I will rename this driver in the next version. > > Thanks! > > Regarding file names, it seems like the files added to drivers/fpga > could be uniformly named dfl-*.[ch]. Some are fpga-dfl-*.[ch] while > other are currently dfl-*.[ch] currently. Sure, will have all related drivers files renamed to dfl-*.[ch]. Thanks Hao > > Alan > > > > > Hao