Re: Ethernet driver for Linux kernel 2.6 running on ML403

[David H. Lynch Jr.]

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 [EMAIL PROTECTED] 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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