/**
* igb_ptp_reset - Re-enable the adapter for PTP following a reset.
* @adapter: Board private structure.
*
* This function handles the reset work required to re-enable the PTP device.
**/
void igb_ptp_reset(struct igb_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
unsigned long flags;
/* reset the tstamp_config */
igb_ptp_set_timestamp_mode(adapter, &adapter->tstamp_config);
spin_lock_irqsave(&adapter->tmreg_lock, flags);
switch (adapter->hw.mac.type) {
case e1000_82576:
/* Dial the nominal frequency. */
wr32(E1000_TIMINCA, INCPERIOD_82576 | INCVALUE_82576);
break;
case e1000_82580:
case e1000_i354:
case e1000_i350:
case e1000_i210:
case e1000_i211:
wr32(E1000_TSAUXC, 0x0);
wr32(E1000_TSSDP, 0x0);
wr32(E1000_TSIM,
TSYNC_INTERRUPTS |
(adapter->pps_sys_wrap_on ? TSINTR_SYS_WRAP : 0));
wr32(E1000_IMS, E1000_IMS_TS);
break;
default:
/* No work to do. */
goto out;
}
/* Re-initialize the timer. */
if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) {
struct timespec64 ts = ktime_to_timespec64(ktime_get_real());
igb_ptp_write_i210(adapter, &ts);
} else {
timecounter_init(&adapter->tc, &adapter->cc,
ktime_to_ns(ktime_get_real()));
}
out:
spin_unlock_irqrestore(&adapter->tmreg_lock, flags);
wrfl();
if (adapter->ptp_flags & IGB_PTP_OVERFLOW_CHECK)
schedule_delayed_work(&adapter->ptp_overflow_work,
IGB_SYSTIM_OVERFLOW_PERIOD);
}
static int igb_ptp_settime_i210(struct ptp_clock_info *ptp,
const struct timespec *ts)
{
struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
ptp_caps);
unsigned long flags;
spin_lock_irqsave(&igb->tmreg_lock, flags);
igb_ptp_write_i210(igb, ts);
spin_unlock_irqrestore(&igb->tmreg_lock, flags);
return 0;
}
static int igb_ptp_adjtime_i210(struct ptp_clock_info *ptp, s64 delta)
{
struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
ptp_caps);
unsigned long flags;
struct timespec now, then = ns_to_timespec(delta);
spin_lock_irqsave(&igb->tmreg_lock, flags);
igb_ptp_read_i210(igb, &now);
now = timespec_add(now, then);
igb_ptp_write_i210(igb, (const struct timespec *)&now);
spin_unlock_irqrestore(&igb->tmreg_lock, flags);
return 0;
}
/**
* igb_ptp_reset - Re-enable the adapter for PTP following a reset.
* @adapter: Board private structure.
*
* This function handles the reset work required to re-enable the PTP device.
**/
void igb_ptp_reset(struct igb_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
unsigned long flags;
if (!(adapter->flags & IGB_FLAG_PTP))
return;
/* reset the tstamp_config */
igb_ptp_set_timestamp_mode(adapter, &adapter->tstamp_config);
spin_lock_irqsave(&adapter->tmreg_lock, flags);
switch (adapter->hw.mac.type) {
case e1000_82576:
/* Dial the nominal frequency. */
E1000_WRITE_REG(hw, E1000_TIMINCA, INCPERIOD_82576 |
INCVALUE_82576);
break;
case e1000_82580:
case e1000_i350:
case e1000_i354:
case e1000_i210:
case e1000_i211:
E1000_WRITE_REG(hw, E1000_TSAUXC, 0x0);
E1000_WRITE_REG(hw, E1000_TSSDP, 0x0);
E1000_WRITE_REG(hw, E1000_TSIM, TSYNC_INTERRUPTS);
E1000_WRITE_REG(hw, E1000_IMS, E1000_IMS_TS);
break;
default:
/* No work to do. */
goto out;
}
/* Re-initialize the timer. */
if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) {
struct timespec64 ts64 = ktime_to_timespec64(ktime_get_real());
igb_ptp_write_i210(adapter, &ts64);
} else {
timecounter_init(&adapter->tc, &adapter->cc,
ktime_to_ns(ktime_get_real()));
}
out:
spin_unlock_irqrestore(&adapter->tmreg_lock, flags);
}