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igc: Export a way to read the PTP timer

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The next patch will need a way to retrieve the current timestamp from
the NIC's PTP clock.

The 'i225' suffix is removed, if anything model specific is needed,
those specifics should be hidden by this function.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Vinicius Costa Gomes 2020-09-02 16:36:56 -07:00 committed by Tony Nguyen
parent f4e55d394a
commit fec49eb4e0
2 changed files with 4 additions and 4 deletions
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1
drivers/net/ethernet/intel/igc/igc.h
View File

@ -550,6 +550,7 @@ void igc_ptp_rx_pktstamp(struct igc_q_vector *q_vector, void *va,
int igc_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr);
int igc_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr);
void igc_ptp_tx_hang(struct igc_adapter *adapter);
void igc_ptp_read(struct igc_adapter *adapter, struct timespec64 *ts);
#define igc_rx_pg_size(_ring) (PAGE_SIZE << igc_rx_pg_order(_ring))

7
drivers/net/ethernet/intel/igc/igc_ptp.c
View File

@ -17,8 +17,7 @@
#define IGC_PTP_TX_TIMEOUT (HZ * 15)
/* SYSTIM read access for I225 */
static void igc_ptp_read_i225(struct igc_adapter *adapter,
struct timespec64 *ts)
void igc_ptp_read(struct igc_adapter *adapter, struct timespec64 *ts)
{
struct igc_hw *hw = &adapter->hw;
u32 sec, nsec;
@ -75,7 +74,7 @@ static int igc_ptp_adjtime_i225(struct ptp_clock_info *ptp, s64 delta)
spin_lock_irqsave(&igc->tmreg_lock, flags);
igc_ptp_read_i225(igc, &now);
igc_ptp_read(igc, &now);
now = timespec64_add(now, then);
igc_ptp_write_i225(igc, (const struct timespec64 *)&now);
@ -517,7 +516,7 @@ void igc_ptp_init(struct igc_adapter *adapter)
static void igc_ptp_time_save(struct igc_adapter *adapter)
{
igc_ptp_read_i225(adapter, &adapter->prev_ptp_time);
igc_ptp_read(adapter, &adapter->prev_ptp_time);
adapter->ptp_reset_start = ktime_get();
}