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ixgbe: separate the PTP suspend and stop actions 

Since we are adding proper support for suspend of PTP, extract out of
ixgbe_ptp_stop those things relevant to suspend. Then, have
ixgbe_ptp_stop call ixgbe_ptp_suspend. The next patch in the series will
have ixgbe_ptp_suspend called from the ixgbe_suspend path.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2014-05-16 05:12:28 +00:00 committed by Jeff Kirsher
parent 63328ada9e
commit 9966d1ee6d
2 changed files with 25 additions and 7 deletions
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1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -957,6 +957,7 @@ static inline struct netdev_queue *txring_txq(const struct ixgbe_ring *ring)
}
void ixgbe_ptp_init(struct ixgbe_adapter *adapter);
void ixgbe_ptp_suspend(struct ixgbe_adapter *adapter);
void ixgbe_ptp_stop(struct ixgbe_adapter *adapter);
void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter);
void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter);

31
drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
View File

@ -960,28 +960,45 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
}
/**
* ixgbe_ptp_stop - disable ptp device and stop the overflow check
* @adapter: pointer to adapter struct
* ixgbe_ptp_suspend - stop PTP work items
* @ adapter: pointer to adapter struct
*
* this function stops the ptp support, and cancels the delayed work.
* this function suspends PTP activity, and prevents more PTP work from being
* generated, but does not destroy the PTP clock device.
*/
void ixgbe_ptp_stop(struct ixgbe_adapter *adapter)
void ixgbe_ptp_suspend(struct ixgbe_adapter *adapter)
{
/* Leave the IXGBE_PTP_RUNNING state. */
if (!test_and_clear_bit(__IXGBE_PTP_RUNNING, &adapter->state))
return;
/* stop the PPS signal */
adapter->flags2 &= ~IXGBE_FLAG2_PTP_PPS_ENABLED;
ixgbe_ptp_setup_sdp(adapter);
/* since this might be called in suspend, we don't clear the state,
* but simply reset the auxiliary PPS signal control register
*/
IXGBE_WRITE_REG(&adapter->hw, IXGBE_TSAUXC, 0x0);
/* ensure that we cancel any pending PTP Tx work item in progress */
cancel_work_sync(&adapter->ptp_tx_work);
if (adapter->ptp_tx_skb) {
dev_kfree_skb_any(adapter->ptp_tx_skb);
adapter->ptp_tx_skb = NULL;
clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state);
}
}
/**
* ixgbe_ptp_stop - close the PTP device
* @adapter: pointer to adapter struct
*
* completely destroy the PTP device, should only be called when the device is
* being fully closed.
*/
void ixgbe_ptp_stop(struct ixgbe_adapter *adapter)
{
/* first, suspend PTP activity */
ixgbe_ptp_suspend(adapter);
/* disable the PTP clock device */
if (adapter->ptp_clock) {
ptp_clock_unregister(adapter->ptp_clock);
adapter->ptp_clock = NULL;