From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx.dlasys.net (24.152.213.223.res-cmts.eph.ptd.net [24.152.213.223]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 1DE5A67B7A for ; Fri, 15 Sep 2006 09:05:22 +1000 (EST) Message-ID: <4509DF7A.2020009@dlasys.net> Date: Thu, 14 Sep 2006 19:02:18 -0400 From: "David H. Lynch Jr." MIME-Version: 1.0 To: Michael Galassi Subject: Re: Ethernet driver for Linux kernel 2.6 running on ML403 References: <002501c6d79e$cca7ee40$800101df@monstertop> <528646bc0609131852s41a8bc4ev44b84d68f51b1d2d@mail.gmail.com> <45093A94.2080407@dlasys.net> <200609141353.k8EDrkPN065101@penguin.ncube.com> In-Reply-To: <200609141353.k8EDrkPN065101@penguin.ncube.com> Content-Type: multipart/alternative; boundary="------------090805070606010300080908" Cc: linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------090805070606010300080908 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Michael Galassi wrote: > > It is also worth noting that as released in MVL pro 4.0.1 it only > supports hard_temac 1.00.a and plb_temac 2.00.a, both of which are > tagged as deprecated in the current version (8.2.01i) of Xilinx's > EDK. The current version of {plb,hard}_temac (3.00.a) goes to great > lengths to break compatibility with older versions. This will > presumably be fixed next month when it is rumored that wonderful new > things will come from Xilinx. In the mean-time it is possible, though > neither simple, nor fun, to create Virtex4 designs with the older IP. > Fortunately, I have little to do with the firmware. Unfortunately, after the firmware is in the product, I am the guy who has to make the drivers work. I am also not straight - though I am somewhat clearer, on exactly what any given flavor of TEMAC is. As best as I can tell, the V4 FX chipsets contain some dedicated hardware that forms the basis for the TEMAC. (or possibly several TEMAC's depending on how it is built). Separately Xilinx provides a plethora of wrapper logic, that allows you to implement a slew of different incarnations. All similar yet different at the same time. Ranging from the Local Link TEMAC which is the simplest to the PLB SG DMA driven TEMAC which is probably the most complex. Then there is an assortment of PDF's from Xilinx, none of which quite match whatever you might have. And at the risk of Goring somebodies Ox, the MV/EDK based drivers may/may not have the attribute of being portable accross multiple OS's, but they seem to pretty much deliberately violate almost every style quideline for Linux drivers. Linux is written in C, not preprocessor Macros. For anyone at MV I have ticked off - Sorry, I am sure it is brilliantly written preprocessor Macros. > -michael > -- Dave Lynch DLA Systems Software Development: Embedded Linux 717.627.3770 dhlii@dlasys.net http://www.dlasys.net fax: 1.253.369.9244 Cell: 1.717.587.7774 Over 25 years' experience in platforms, languages, and technologies too numerous to list. "Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction." Albert Einstein --------------090805070606010300080908 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Michael Galassi wrote: 

It is also worth noting that as released in MVL pro 4.0.1 it only
supports hard_temac 1.00.a and plb_temac 2.00.a, both of which are
tagged as deprecated in the current version (8.2.01i) of Xilinx's
EDK. The current version of {plb,hard}_temac (3.00.a) goes to great
lengths to break compatibility with older versions.  This will
presumably be fixed next month when it is rumored that wonderful new
things will come from Xilinx.  In the mean-time it is possible, though
neither simple, nor fun, to create Virtex4 designs with the older IP.
    Fortunately, I have little to do with the firmware.
    Unfortunately, after the firmware is in the product, I am the guy who has to make the drivers work.

    I am also not straight - though I am somewhat clearer, on exactly what any given flavor of TEMAC is.

    As best as I can tell, the V4 FX chipsets contain some dedicated hardware that forms the basis for the TEMAC.
    (or possibly several TEMAC's depending on how it is built).
   
    Separately Xilinx provides a plethora of wrapper logic, that allows you to implement  a slew of different incarnations.
    All similar yet different at the same time. Ranging from the Local Link TEMAC which is the simplest to the
    PLB SG DMA driven TEMAC which is probably the most complex.

    Then there is an assortment of PDF's from Xilinx, none of which quite match whatever you might have.

    And at the risk of Goring somebodies Ox, the MV/EDK based drivers may/may not have the attribute of
    being portable accross multiple OS's, but they seem to pretty much deliberately violate almost every style
    quideline for Linux drivers. Linux is written in C, not preprocessor Macros.

    For anyone at MV I have ticked off - Sorry, I am sure it is brilliantly written preprocessor Macros.
   
   
    




-michael
  


-- 
Dave Lynch 					  	    DLA Systems
Software Development:  				         Embedded Linux
717.627.3770 	       dhlii@dlasys.net 	  http://www.dlasys.net
fax: 1.253.369.9244 			           Cell: 1.717.587.7774
Over 25 years' experience in platforms, languages, and technologies too numerous to list.

"Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
Albert Einstein
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