On Tuesday, March 22, 2005 4:04 PM, Dan Malek wrote:
> On Mar 22, 2005, at 11:56 AM, Gilad Rom wrote:
>
>> Has anyone ever tried using a Gigabit PCI
>> adapter with one of the Au1x00 boards? Any success?
>
> Just remember that the Au1x00 boards are 32-bit , 33 MHz,
> 3.3V PCI, so choose your boards accordingly. Please don't expect the
> Au1x00 to run the TCP/IP stack anywhere near Gigabit speeds ..... :-)
We have researching this topic for a little while, particularly from the FPGA
standpoint. Although not specific to MIPS, I offer a
few links which discuss the considerations for successfully sustaining gigabit
ethernet transport.
The "Gigabit System Reference Design", pg. 49 offers some benchmarks obtained
using MontaVista Linux on a PowerPC 405. Key
takeaways are that the data payload must not be handled by the stack (DMA
direct from framebuffer/fifo/sdram) and must use jumbo
(5000,9000) ethernet frames.
Best Regards,
-bogdan
---
EE Times, "Altera Demonstrates FPGA for video-over-IP", March 2005,
http://www.embedded.com/showArticle.jhtml?articleID=159903648
Altera, "Video Over IP Reference Design", March 2005,
http://www.altera.com/solutions/refdesigns/sys-sol/broadcast/ref-video.html
Xilinx, "Gigabit System Reference Design", June 2004,
http://direct.xilinx.com/bvdocs/appnotes/xapp536.pdf
Xilinx, "Considerations for High-Bandwidth TCP/IP PowerPC Applications", XCell
Journal pg.14-16, Winter 2004,
http://www.xilinx.com/publications/xcellonline/xcell_51/xc_pdf/xc_xcell51.pdf
Marco Riccioli, Xilinx "Getting the most TCP/IP from your Embedded Processor",
Embedded World 2005,
http://www.treck.com/xilinx.pdf
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