From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Date: Wed, 24 Feb 2016 12:22:44 -0800 Subject: [Intel-wired-lan] [PATCH v8 8/8] net: e1000e: Adds hardware supported cross timestamp on e1000e nic In-Reply-To: <1456139726-3327-9-git-send-email-christopher.s.hall@intel.com> References: <1456139726-3327-1-git-send-email-christopher.s.hall@intel.com> <1456139726-3327-9-git-send-email-christopher.s.hall@intel.com> Message-ID: <1456345364.2808.1.camel@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: On Mon, 2016-02-22 at 03:15 -0800, Christopher S. Hall wrote: > Modern Intel systems supports cross timestamping of the network > device > clock and Always Running Timer (ART) in hardware.? This allows the > device time and system time to be precisely correlated. The timestamp > pair is returned through e1000e_phc_get_syncdevicetime() used by > get_system_device_crosststamp().? The hardware cross-timestamp result > is made available to applications through the PTP_SYS_OFFSET_PRECISE > ioctl which calls e1000e_phc_getcrosststamp(). > > Signed-off-by: Christopher S. Hall > [jstultz: Reworked to use new interface, commit message tweaks] > Signed-off-by: John Stultz > --- > ?drivers/net/ethernet/intel/Kconfig????????? |? 9 +++ > ?drivers/net/ethernet/intel/e1000e/defines.h |? 5 ++ > ?drivers/net/ethernet/intel/e1000e/ptp.c???? | 85 > +++++++++++++++++++++++++++++ > ?drivers/net/ethernet/intel/e1000e/regs.h??? |? 4 ++ > ?4 files changed, 103 insertions(+) Acked-by: Jeff Kirsher -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: This is a digitally signed message part URL: