Not everything in the hardware is enabled in the software. We do not appear to be using the register you mention.
I have been told by those more familiar with PTP that the Time Sync registers are in chapter 8.16 and are only accessible through the PF. Todd Fujinaka Software Application Engineer Ethernet Products Group Intel Corporation todd.fujin...@intel.com -----Original Message----- From: b.von_h...@wzl.rwth-aachen.de <b.von_h...@wzl.rwth-aachen.de> Sent: Thursday, May 5, 2022 5:41 AM To: e1000-devel@lists.sourceforge.net Subject: [E1000-devel] [igbvf] Accessing PTP clock from a Virtual Function Hello, I'd like to access the PTP timer of an i350T2V2 from a VF. The Datasheet (Rev. 2.6) states in section 7.8.2.12.2 that "VMs have access to the real time clock register". But the only timer-related register which is mapped to a VF I could find is the free-running timer (VTFRTIMER at 0x1048). So I'm kind of confused. P.S. yes I know that there is ptp_kvm module, but it uses hypercalls which I'd like to avoid. Thanks a lot, Bjarne _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel Ethernet, visit https://forums.intel.com/s/topic/0TO0P00000018NbWAI/intel-ethernet _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel Ethernet, visit https://forums.intel.com/s/topic/0TO0P00000018NbWAI/intel-ethernet
