AVB 802.1Qav linux driver?

Stephen Turner

The DM814x supports IEEE 802.1Qav (well - Draft 6.0 says the TRM). Is there a Linux driver planned for this feature?. If not will the functionality be documented at a register level?

thanks

Steve

over 12 years ago

0 Viet Dinh over 12 years ago

TI__Genius 15310 points

Hi Steve,

Curently, there’s no plan to make AVB Linux driver available. I have to get back with you about register available.

Regards,

Viet

0 senthil.natarajan over 12 years ago in reply to Viet Dinh

TI__Prodigy 180 points

Hi Stephen,

We do not have plans on the moment about describing the implementation at a register level. We are aware of a thrid party that might be able to help. Please let me know if this route is something you might be interested in.

Best regards,

Senthil

0 Stephen Turner over 12 years ago in reply to senthil.natarajan

Genius 3235 points

Senthil

We would still like to write our own 802.1Qav driver for the DM814x. Has anything changed as far as releasing documentation on the registers?.

thanks

steve

0 Viet Dinh over 12 years ago in reply to Stephen Turner

TI__Genius 15310 points

Hi Steve,

Nothing change on 802.1Qav driver since then.

BR,

Viet

0 pankaj sethia over 11 years ago in reply to Viet Dinh

Intellectual 445 points

Hi ,

I am also trying to write code that can shape the traffic according to packet priority and i am going to use Rate Limiting mode of DM8148. AFAIK it is the same as ieee 802.1Qav that also shape the traffic according to priority of Packet. Am i going in right direction? plz suggest me .

0 Stephen Turner over 11 years ago in reply to pankaj sethia

Genius 3235 points

From what I have seen on this forum and people I have talked to at TI, there are no plans to support 802.1Qav anymore.

This is sad and very misleading as Qav has been described in the TRM for a while now. All references to it need to be removed, if no software support or documentation is planned.

Unfortunately , this is not the TI I am used to........

-steve

0 pankaj sethia over 11 years ago in reply to Stephen Turner

Intellectual 445 points

Hi Stephen

Can yo tell me something about rate limiting mode ? can't we use this for Qav support?

0 pankaj sethia over 11 years ago in reply to pankaj sethia

Intellectual 445 points

HI Stephen,

Can you tell me something about CPDMA_RX_CH_MAP and CPDMA_TX_PRI_MAP registers in DM8148 processor. I am trying to use these register in my Qav implementatin but i am not getting how these register to be used. is it enough to configure these register according to our need or we have to do something else to store packets according to their priority?

Thanks in advance.

0 Mythili Ramamoorthi over 8 years ago in reply to pankaj sethia

Intellectual 425 points

Hi,

I am using Vayu EVM xc577x Rev G booted with GLSDK 7.0.

Is there any linux driver supporting 802.1 Qav FQTSS for this board?

Regards,

Mythili R

0 Mythili Ramamoorthi over 8 years ago in reply to Mythili Ramamoorthi

Intellectual 425 points

Hi,

Whether TI AR7 ethernet driver (CPMAC) having Hardware Queuing (802.1Q FQTSS) support or we need to write our own 802.1Qav linux driver?

0 Yanko Todorov-XID over 8 years ago in reply to Mythili Ramamoorthi

TI__Mastermind 29520 points

Hello Mythi,

All AVBTP systems shall support the following standards

IEEE P802.1AS Precision Timing Protocol (gPTP)
IEEE P802.1Qat Stream Reservation Protocol (SRP)
IEEE P802.1Qav Forwarding and Queuing Enhancements for Time-Sensitive Streams (FQTSS)

See the link - https://github.com/audioscience/ptpd2/blob/master/ptp_implementations.rst

Best regards,

Yanko

0 Mythili Ramamoorthi over 8 years ago in reply to Yanko Todorov-XID

Intellectual 425 points

Hi Yanko,

Thanks for your response.
Can we have to write the Qav driver or we can use the existing cpts driver for Qav support?

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AVB 802.1Qav linux driver?