Commit a711a328 authored by Karol Kolacinski's avatar Karol Kolacinski Committed by Tony Nguyen
Browse files

ice: Check for PTP HW lock more frequently 



It was observed that PTP HW semaphore can be held for ~50 ms in worst
case.
SW should wait longer and check more frequently if the HW lock is held.

Signed-off-by: default avatarKarol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent e80bd08f

drivers/net/ethernet/intel/ice/ice_ptp_hw.c

+7 −5
Original line number Diff line number Diff line
@@ -2963,16 +2963,18 @@ bool ice_ptp_lock(struct ice_hw *hw) 
	u32 hw_lock;

	int i;



#define MAX_TRIES 5

#define MAX_TRIES 15



	for (i = 0; i < MAX_TRIES; i++) {

		hw_lock = rd32(hw, PFTSYN_SEM + (PFTSYN_SEM_BYTES * hw->pf_id));

		hw_lock = hw_lock & PFTSYN_SEM_BUSY_M;

		if (!hw_lock)

			break;



		if (hw_lock) {

			/* Somebody is holding the lock */

		usleep_range(10000, 20000);

			usleep_range(5000, 6000);

			continue;

		}



		break;

	}



	return !hw_lock;