[Intel-wired-lan] [next-queue PATCH v2 5/5] igc: Use Start of Packet signal from PHY for timestamping
Vinicius Costa Gomes
vinicius.gomes at intel.com
Wed Nov 27 01:04:35 UTC 2019
For better accuracy, i225 is able to do timestamping using the Start of
Packet signal from the PHY.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes at intel.com>
---
drivers/net/ethernet/intel/igc/igc_defines.h | 2 ++
drivers/net/ethernet/intel/igc/igc_ptp.c | 5 ++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h
index e978fd484fc8..8e1f2e27cc0b 100644
--- a/drivers/net/ethernet/intel/igc/igc_defines.h
+++ b/drivers/net/ethernet/intel/igc/igc_defines.h
@@ -364,6 +364,7 @@
#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
@@ -387,6 +388,7 @@
#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 */
diff --git a/drivers/net/ethernet/intel/igc/igc_ptp.c b/drivers/net/ethernet/intel/igc/igc_ptp.c
index b63a03157ec1..86ca93cb2fc5 100644
--- a/drivers/net/ethernet/intel/igc/igc_ptp.c
+++ b/drivers/net/ethernet/intel/igc/igc_ptp.c
@@ -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);
--
2.24.0
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