diff mbox series

[v6,iwl-next,4/7] ice: don't check has_ready_bitmap in E810 functions

Message ID 20240118174552.2565889-5-karol.kolacinski@intel.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ice: fix timestamping in reset process | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit fail Errors and warnings before: 18 this patch: 1092
netdev/cc_maintainers success CCed 0 of 0 maintainers
netdev/build_clang fail Errors and warnings before: 19 this patch: 1107
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn fail Errors and warnings before: 18 this patch: 1107
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 52 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Karol Kolacinski Jan. 18, 2024, 5:45 p.m. UTC 
From: Jacob Keller <jacob.e.keller@intel.com>

E810 hardware does not have a Tx timestamp ready bitmap. Don't check
has_ready_bitmap in E810-specific functions.
Add has_ready_bitmap check in ice_ptp_process_tx_tstamp() to stop
relying on the fact that ice_get_phy_tx_tstamp_ready() returns all 1s.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
---
V5 -> V6: introduced this patch which was a part of a previous one

 drivers/net/ethernet/intel/ice/ice_ptp.c | 25 ++++++++++++------------
 1 file changed, 12 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 558716aa6ef1..69d11dbda22c 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -601,17 +601,13 @@  void ice_ptp_complete_tx_single_tstamp(struct ice_ptp_tx *tx)
 	/* Read the low 32 bit value */
 	raw_tstamp |= (u64)rd32(&pf->hw, PF_SB_ATQBAH);
 
-	/* For PHYs which don't implement a proper timestamp ready bitmap,
-	 * verify that the timestamp value is different from the last cached
-	 * timestamp. If it is not, skip this for now assuming it hasn't yet
-	 * been captured by hardware.
+	/* Devices using this interface always verify the timestamp differs
+	 * relative to the last cached timestamp value.
 	 */
-	if (!drop_ts && !tx->has_ready_bitmap &&
-	    raw_tstamp == tx->tstamps[idx].cached_tstamp)
+	if (raw_tstamp == tx->tstamps[idx].cached_tstamp)
 		return;
 
-	if (!tx->has_ready_bitmap && raw_tstamp)
-		tx->tstamps[idx].cached_tstamp = raw_tstamp;
+	tx->tstamps[idx].cached_tstamp = raw_tstamp;
 	clear_bit(idx, tx->in_use);
 	skb = tx->tstamps[idx].skb;
 	tx->tstamps[idx].skb = NULL;
@@ -701,9 +697,11 @@  static void ice_ptp_process_tx_tstamp(struct ice_ptp_tx *tx)
 	hw = &pf->hw;
 
 	/* Read the Tx ready status first */
-	err = ice_get_phy_tx_tstamp_ready(hw, tx->block, &tstamp_ready);
-	if (err)
-		return;
+	if (tx->has_ready_bitmap) {
+		err = ice_get_phy_tx_tstamp_ready(hw, tx->block, &tstamp_ready);
+		if (err)
+			return;
+	}
 
 	/* Drop packets if the link went down */
 	link_up = ptp_port->link_up;
@@ -731,7 +729,8 @@  static void ice_ptp_process_tx_tstamp(struct ice_ptp_tx *tx)
 		 * If we do not, the hardware logic for generating a new
 		 * interrupt can get stuck on some devices.
 		 */
-		if (!(tstamp_ready & BIT_ULL(phy_idx))) {
+		if (tx->has_ready_bitmap &&
+		    !(tstamp_ready & BIT_ULL(phy_idx))) {
 			if (drop_ts)
 				goto skip_ts_read;
 
@@ -751,7 +750,7 @@  static void ice_ptp_process_tx_tstamp(struct ice_ptp_tx *tx)
 		 * from the last cached timestamp. If it is not, skip this for
 		 * now assuming it hasn't yet been captured by hardware.
 		 */
-		if (!drop_ts && tx->verify_cached &&
+		if (!drop_ts && !tx->has_ready_bitmap &&
 		    raw_tstamp == tx->tstamps[idx].cached_tstamp)
 			continue;