Dual Mac mode in NSP

Vinesh Balan

Other Parts Discussed in Thread: SYSBIOS

Hi,

I've implemented NSP for am335x(using Starterware), which currently works fine. The client example application has been executed successfully on an IDK. However, our next task is to make the NSP to function in Dual Mac mode(On ICE v2). In Dual Mac mode, the two ports have to function independently i.e., with two IP address, MAC address etc.

From what I understand, for this to be implemented in NSP, we have to create two instances of NETIF_DEVICE and register them accordingly. Is this the correct approach? If yes, is there some sort of reference implementation I can follow up with? If no, please suggest how to approach the same.

Thanks,
Vinesh

over 12 years ago

0 MarkGrosen over 12 years ago

TI__Expert 4125 points

Vinesh,

Yes, your idea is correct. You would need to generate a NIMUDeviceTable structure with your driver's init function listed twice. Then the stack will call your driver twice and you can return separate instances for each MAC. Unfortunately, I don't have a working example to show you. Code fragment below for the device table:

#include <ti/ndk/inc/stack/inc/nimuif.h>

extern int DUALMAC_NIMUInit(STKEVENT_Handle event);

NIMU_DEVICE_TABLE_ENTRY NIMUDeviceTable[] = {
    DUALMAC_NIMUInit,
    DUALMAC_NIMUInit,
    NULL,
};

Mark

0 Vinesh Balan over 12 years ago in reply to MarkGrosen

TI__Expert 7360 points

Mark,

Thanks for the response. So if DUALMAC_NIMUInit would be called twice, this would mean additional handling would be required in all the nimu_eth.c functions and the Interrupt handlers?

Vinesh

0 MarkGrosen over 12 years ago in reply to Vinesh Balan

TI__Expert 4125 points

Yes, your driver is managing two separate physical instances, so it needs to do these things.

Mark

0 Brian Smith98 over 8 years ago

Intellectual 620 points

Hi Vinesh,

Just interested if you managed to get both Ethernet ports to work eventually and if you have any documentation about the changes you

had to make.

Thanks

Brian

0 Kenia Guinto over 8 years ago in reply to Brian Smith98

TI__Expert 7250 points

Hi Brian,
We generally discourage posting a new question to an old closed thread because the person who answered before may no longer be available, and also it will allow whomever is currently assigned to monitor the forum to respond to you more quickly. For these reasons, I suggest you start a new thread with your question and reference this thread.

Thank you

0 Brian Smith98 over 8 years ago in reply to Kenia Guinto

Intellectual 620 points

Hi,

I already have an unanswered thread about how to get dual mac mode to work with pdk_am437x_1.0.4 and and ndk - It was suggested that

Vinesh would be contacted.I was just trying to speed up the process since this problem is still not solved.

Thanks

Brian

0 Vladimir over 8 years ago in reply to Brian Smith98

Intellectual 850 points

Hi, Brian

I also appeared similar to the need for dual MAC mode and
i lost one week time to work on the implementation of the dual mode.
I implemented in normal operation of dual mac mode to work with am335x_sysbios_ind_sdk_1.1.0.10 and ndk, ready to share the modified source who need it - respond, then fasten the files in this forum thread.

Thanks

Vladimir

0 Andrew Stevenson50 over 8 years ago in reply to Vladimir

Prodigy 90 points

Hi Vladimir, I just posted a similar question to TI so I would welcome a look at the modified source code.

Regards,
Andrew.

0 Vladimir over 8 years ago in reply to Andrew Stevenson50

Intellectual 850 points

Hi Andrew, I added files. init.s file contains an example of the initialization code CPSW driver and an example of the creation of the two interfaces with two different IP addresses to two different physical interfaces. Zip file contains a modified driver code. To view the differences compare archive files with the same files in am335x_sysbios_ind_sdk_1.1.0.10. Comments can not provide, because there is no enough time. If you have any questions, I will be happy to answer them.7875.cpsw.zip

Regards,
Vladimir

0 Vladimir over 8 years ago in reply to Vladimir

Intellectual 850 points

8407.init.cHere init.c file

0 Brian Smith98 over 8 years ago in reply to Vladimir

Intellectual 620 points

Hi Vladimir,
Thanks for posting your solution for dual mac mode .
What speed could you operate in dual mac mode?
Thanks in advance
Brian

0 Vladimir over 8 years ago in reply to Brian Smith98

Intellectual 850 points

Hi Brian,

I did not check the data transfer speed when operating in dual EMAC mode , because is no need for my application. Can assume that on the rate of will affect the number of used CPPI DMA channels. I assume that few used channels will negatively affect only on the Gigabit mode. If you can check the speed in dual EMAC mode, please share the results of tests.

Thanks in advance.

Vladimir

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Dual Mac mode in NSP