Commit a299df35 authored by Vinicius Costa Gomes's avatar Vinicius Costa Gomes Committed by Jeff Kirsher
Browse files

igc: Use Start of Packet signal from PHY for timestamping 



For better accuracy, i225 is able to do timestamping using the Start of
Packet signal from the PHY.

Signed-off-by: default avatarVinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 60dbede0

drivers/net/ethernet/intel/igc/igc_defines.h

+2 −0
Original line number Diff line number Diff line
@@ -395,6 +395,7 @@ 
#define IGC_TSYNCRXCTL_TYPE_EVENT_V2	0x0A

#define IGC_TSYNCRXCTL_ENABLED		0x00000010  /* enable Rx timestamping */

#define IGC_TSYNCRXCTL_SYSCFI		0x00000020  /* Sys clock frequency */

#define IGC_TSYNCRXCTL_RXSYNSIG		0x00000400  /* Sample RX tstamp in PHY sop */



/* Time Sync Receive Configuration */

#define IGC_TSYNCRXCFG_PTP_V1_CTRLT_MASK	0x000000FF
@@ -418,6 +419,7 @@ 
#define IGC_TSYNCTXCTL_SYNC_COMP_ERR		0x20000000  /* sync err */

#define IGC_TSYNCTXCTL_SYNC_COMP		0x40000000  /* sync complete */

#define IGC_TSYNCTXCTL_START_SYNC		0x80000000  /* initiate sync */

#define IGC_TSYNCTXCTL_TXSYNSIG			0x00000020  /* Sample TX tstamp in PHY sop */



/* Receive Checksum Control */

#define IGC_RXCSUM_CRCOFL	0x00000800   /* CRC32 offload enable */

drivers/net/ethernet/intel/igc/igc_ptp.c

+4 −1
Original line number Diff line number Diff line
@@ -368,6 +368,7 @@ static int igc_ptp_set_timestamp_mode(struct igc_adapter *adapter, 
	if (tsync_rx_ctl) {

		tsync_rx_ctl = IGC_TSYNCRXCTL_ENABLED;

		tsync_rx_ctl |= IGC_TSYNCRXCTL_TYPE_ALL;

		tsync_rx_ctl |= IGC_TSYNCRXCTL_RXSYNSIG;

		config->rx_filter = HWTSTAMP_FILTER_ALL;

		is_l2 = true;

		is_l4 = true;
@@ -384,8 +385,10 @@ static int igc_ptp_set_timestamp_mode(struct igc_adapter *adapter, 
		}

	}



	if (tsync_tx_ctl)

	if (tsync_tx_ctl) {

		tsync_tx_ctl = IGC_TSYNCTXCTL_ENABLED;

		tsync_tx_ctl |= IGC_TSYNCTXCTL_TXSYNSIG;

	}



	/* enable/disable TX */

	regval = rd32(IGC_TSYNCTXCTL);