Problems with Web Server(RGMII) template (it keeps restarting!)

Dear Neal,

I'm working on the DE1-SoC board, and I have to make a driver to initialize the ethernet controller, I have the same controller that you are using. I'm very grateful if you can share the driver of the micrel KSZ9021

Thank you

Gianluca

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Hi all,

I am working on a custom board which has a Stratix iv FPGA and a Micrel KSZ9021 ethernet phy.

The hardware design is the same as the triple speed ethernet example which includes TSE MAC, SGDMA, and DDR3.

As to the Nios II code, I use the web server(RGMII) template and modify it a little bit.

The modification I did is: 1. hard coded the MAC address(instead of reading from flash) and use static IP

2. comment out the LED tasks and so on to simply test the ethernet connection

3. wrote a driver for the phy and plug it in the altera_avalon_tse.c

Everything compiles fine and initialization is successful as the outputs below shows:

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InterNiche Portable TCP/IP, v3.1

Copyright 1996-2008 by InterNiche Technologies. All rights reserved.

prep_tse_mac 0

Your Ethernet MAC address is 00:07:ed:ff:8f:12

Static IP Address is 172.16.8.207

prepped 1 interface, initializing...

[tse_mac_init]

INFO : TSE MAC 0 found at address 0x20012000

INFO : PHY MICREL KSZ9021 found at PHY address 0x07 of MAC Group[0]

INFO : PHY[0.0] - Automatically mapped to tse_mac_device[0]

INFO : PHY[0.0] - Restart Auto-Negotiation, checking PHY link...

INFO : PHY[0.0] - Auto-Negotiation PASSED

micrel : Enable RGMII Timing Control

micrel : Auto-Negotiation PASSED

INFO : PHY[0.0] - Checking link...

INFO : PHY[0.0] - Link established

INFO : PHY[0.0] - Speed = 100, Duplex = Full

OK, x=0, CMD_CONFIG=0x00000000

MAC post-initialization: CMD_CONFIG=0x04000203

[tse_sgdma_read_init] RX descriptor chain desc (1 depth) created

mctest init called

IP address of et1 : 172.16.8.207

Created "Inet main" task (Prio: 2)

Created "clock tick" task (Prio: 3)

Created "web server" task (Prio: 4)

Web Server starting up

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However, the strange thing is when I ping the IP, the host receives the first reply, misses the second one, then receives the third one and so on.

And I find the problem behind it is that every time the program receives a ping, the main function restarts and everything gets re-initialized including the phy!

I've tried to trace the whole program in debug mode but couldn't locate the problem.

I have to admit I'm pretty new to micro-OS and InterNiche and need suggestions in solving this problem.

Thank you in advance!

Neal

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