diff options
| author |   Yangbo Lu <yangbo.lu@nxp.com> | 2021-04-12 17:03:27 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-04-12 13:34:21 -0700 |
| commit | 7294380c5211687aa4d66166984b152ee84caf5f (patch) | |
| tree | c43a894c12fa5354395ea3c19aebd1b6f9778e79 /drivers/net/ethernet/freescale/enetc/enetc_hw.h | |
| parent | enetc: mark TX timestamp type per skb (diff) | |
| download | linux-dev-7294380c5211687aa4d66166984b152ee84caf5f.tar.xz linux-dev-7294380c5211687aa4d66166984b152ee84caf5f.zip | |
enetc: support PTP Sync packet one-step timestamping
This patch is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:
- Trasmit packet immediately if no other one in transfer, or queue to
skb queue if there is already one in transfer.
The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
lock and to send one skb in skb queue if has.
And the configuration for one-step timestamping on ENETC before
transmitting is,
- Set one-step timestamping flag in extension BD.
- Write 30 bits current timestamp in tstamp field of extension BD.
- Update PTP Sync packet originTimestamp field with current timestamp.
- Configure single-step register for correctionField offeset and UDP
checksum update.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/enetc_hw.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc_hw.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_hw.h b/drivers/net/ethernet/freescale/enetc/enetc_hw.h index 00938f7960a4..04ac7fc23ead 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h +++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h @@ -239,6 +239,12 @@ enum enetc_bdr_type {TX, RX}; #define ENETC_PM_IMDIO_BASE 0x8030 +#define ENETC_PM0_SINGLE_STEP 0x80c0 +#define ENETC_PM1_SINGLE_STEP 0x90c0 +#define ENETC_PM0_SINGLE_STEP_CH BIT(7) +#define ENETC_PM0_SINGLE_STEP_EN BIT(31) +#define ENETC_SET_SINGLE_STEP_OFFSET(v) (((v) & 0xff) << 8) + #define ENETC_PM0_IF_MODE 0x8300 #define ENETC_PM0_IFM_RG BIT(2) #define ENETC_PM0_IFM_RLP (BIT(5) | BIT(11)) @@ -548,6 +554,7 @@ static inline void enetc_clear_tx_bd(union enetc_tx_bd *txbd) /* Extension flags */ #define ENETC_TXBD_E_FLAGS_VLAN_INS BIT(0) +#define ENETC_TXBD_E_FLAGS_ONE_STEP_PTP BIT(1) #define ENETC_TXBD_E_FLAGS_TWO_STEP_PTP BIT(2) union enetc_rx_bd { |