Embedded Connectivity
Intel network controllers, Firmware, and drivers support systems
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IEEE1588 HW timestamp on 82574 GbE controller

JChen81
Beginner
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Does anyone had been tried to enable the HW timestamp on Linux? I try to fix the driver 1.1.19v on Ubuntu 10.4 according to datasheet but no luck. Below is my senerio:

  • HW TX

  1. The EXTCMD:TS bit is enable according to datasheet 7.2.10.1 & 7.2.10.1.5.
  2. Enable TX timestamp TSYNCTXCTL.
  • HW RX
  1. Set RXCFGL to 0x0800(IPV4) or 0x88F7 (ieee1588 ethertype), V2 messageID set to 0x0(SYNC packet)
  2. Set RXUDP to 0x013F (port 319)
  3. Config TIMINCA
  4. Config SYSTIMH & SYSTIML
  5. Enable TSYNCRXCTL and select mode
  6. Send SYNC packet from ieee1588 devices
  7. Watchdog query TSYNCRXCTL bit 0, if bit became 1b, then queries RXSTMPH/RXSTMPL/RXSATRL/RXSATRH.

TEST CASE & QUESTION:

  1. I use wireshark to sniff the packet, and double check the messageId/versionPTP. The incoming packets seem to be corrected. TSYNCRXCTL bit still remain 0 except no-locking mode 100b. In no-locking mode, RXSTMPH/RXSTMPL/RXSATRL/RXSATRH value change everytime SYNC packet receive.
  2. The main differentiation between mode 100b and other mode is locking, could be somewhere has lock the register (I make a assumption that mode 100b work)?
  3. I try to read the RXSTMPL/RXSTMPH in watchdog timer but still no luck at all. According to datasheet 7.7.3.2, time stamp values will be unlocked after software access, that mean by read the RXSTMPL/RXSTMPH will unlock the timer ?
  4. Do i need to set filter around other registers?

Anyone, please hint me if you have answer :), i would like to share for opensource community as soon as i merge it with ptpv2d.

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BFere
Beginner
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Hello, I've fiddled with hw time stamping on Kawela and Barton Hills cards, and I'm intererested in your ptpv2 daemon implementation. My project was an untergraduate laboratory with ptpd. Initially I tried to refit the v2 version with hw timestamping, but when i started the original code was far from perfect so I decided to finish the v1 daemon instead. I will post the new code till the end of summer (on sf.net). Later I want to benchmark the different versions under various conditions. Any reply would be appreciated :)

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ali12
Beginner
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HI guy:

i could enable hw timestamp function on my 82574 GbE NIC, just do the folloing step that u have known:

Set RXCFGL to 0x0800(IPV4) or 0x88F7 (ieee1588 ethertype), V2 messageID set to 0x0(SYNC packet) ----------------> not really needed, hw has reset valueSet RXUDP to 0x013F (port 319) ----------> not really needed, hw has reset valueSet RXCTL to 0x14 ----------> enable hwtstamp function, and select '010' mode(V2 event message)Config TIMINCA Config SYSTIMH & SYSTIML Enable TSYNCRXCTL and select modeSend SYNC packet from ieee1588 devices

when u complish the initialization work, u colud read bit 0 in RXCTL register, it indicate a hw timestamp has been taken, then u could read RXSTMPL & RXSTMPH registers, good luck.

my email: mailto:lion3875@gmail.com mailto:lion3875@gmail.com" target="_blank" rel="nofollow">lion3875@gmail.com

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