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ice: Check for PTP HW lock more frequently

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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: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Karol Kolacinski 2022-10-03 11:55:18 +02:00 committed by Tony Nguyen
parent e80bd08fd7
commit a711a3288c
1 changed files with 7 additions and 5 deletions
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12
drivers/net/ethernet/intel/ice/ice_ptp_hw.c
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@ -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(5000, 6000);
continue;
}
/* Somebody is holding the lock */
usleep_range(10000, 20000);
break;
}
return !hw_lock;