Strange SRIO response packet.

Vladimir Podgoretskiy

Hello. I'm sending Message Type 11 packets from FPGA to C6678 DSP using SRIO. DSP is sending strange responses like this: Ftype = 0x0D, Ttype = 0x01, Status Field = 0x07 (Error), Transaction ID always = 50 (on DSP SYS-BIOS 6 is running, and SRIO type-11 socket is opened). When I send from FPGA NWRITE_R operation, it works fine, and Responses received from DSP are alright: transaction ID increments normally and matches transaction ID of request-message, Status = 0 (DONE), Ttype = 0x00, Ftype = 0x0D.

What is strange Transaction ID (50) in message-response packets and why this error occurs?

over 12 years ago

0 Vladimir Podgoretskiy over 12 years ago

Intellectual 590 points

About non-changing Transaction ID all is clear now for me: in Messaging SRIO packets are identified by mailbox-letter pair fields. But why error response appears i don't understand. In SRIO register (offset 0xC040) i see, that Unexpected ackID was recieved (19 bit is set). Why it may happens?

0 Vladimir Podgoretskiy over 12 years ago in reply to Vladimir Podgoretskiy

Intellectual 590 points

I resolved this problem too. It was my FPGA bug. Now I can see DONE responses from DSP. But nothing happens in SYS/BIOS, socket does not receive any messages. Why? And how can I track message type 11 into DSP, which registers need I watch?

0 tscheck over 12 years ago in reply to Vladimir Podgoretskiy

TI__Mastermind 23525 points

Vladimir,

Are you using the MCSDK examples for type 11 messaging? If not, it provides a good starting point for all the SRIO, CPPI, and QMSS setup. As well as help you understand the routing of interrupts.

MCSDK:

http://software-dl.ti.com/sdoemb/sdoemb_public_sw/bios_mcsdk/latest/index_FDS.html

Example can be found here:

C:\Program Files\Texas Instruments\pdk_C6678_1_0_0_17\packages\ti\drv\srio\example\SRIOMulticoreLoopback

Regards,

Travis

0 Vladimir Podgoretskiy over 12 years ago in reply to tscheck

Intellectual 590 points

I use ..\pdk_C6678_1_0_0_17\packages\ti\drv\example_projects\SRIO_LoopbackTestProject. In that project I use blocking sockets test -> consumer task. All preparing operations including SRIO initialization is done like in this project.

0 tscheck over 12 years ago in reply to Vladimir Podgoretskiy

TI__Mastermind 23525 points

Vladimir,

So, just to understand your issue... When you run the SRIO_LoopbackTestProject as intended on the DSP in loopback, everything works?? You get the "Debug(Core %d): Consumer TEST 1 Passed\n" message, right? But when you send the data from the FPGA, and run the same consumerTask function on the DSP, you don't get the message? Do you get any message printed to the console?

If you are getting a done message response from the DSP, it means the packet was successfully accepted by the SRIO peripheral HW. You are getting this Done response back on the FPGA?

Regards,

Travis

0 Vladimir Podgoretskiy over 12 years ago in reply to tscheck

Intellectual 590 points

Thanks for reply. I resolved my issue. The problem was in differences between that to examples. In SRIO_LoopbackTestProject there wasn't code to event and enable needed interrupt (Hwi_eventMap(8,48); Hwi_enableInterrupt(8)). Now Interrupts works fine, and I can receive data from FPGA through sockets.

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Strange SRIO response packet.