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

[Altera_Forum]

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: ------------------------------------------------------------- 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 ------------------------------------------------------------- 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

[Altera_Forum]

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    --- Quote Start ---  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: ------------------------------------------------------------- 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 ------------------------------------------------------------- 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  --- Quote End ---