netdev - [PATCH net 2/9] ice: fix PHY timestamp extraction for ETH56G

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Message-ID: <20241203215521.1646668-3-anthony.l.nguyen@intel.com>
Date: Tue,  3 Dec 2024 13:55:11 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Przemyslaw Korba <przemyslaw.korba@...el.com>,
	anthony.l.nguyen@...el.com,
	richardcochran@...il.com,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Simon Horman <horms@...nel.org>,
	Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net 2/9] ice: fix PHY timestamp extraction for ETH56G

From: Przemyslaw Korba <przemyslaw.korba@...el.com>

Fix incorrect PHY timestamp extraction for ETH56G.
It's better to use FIELD_PREP() than manual shift.

Fixes: 7cab44f1c35f ("ice: Introduce ETH56G PHY model for E825C products")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Przemyslaw Korba <przemyslaw.korba@...el.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 3 ++-
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h | 5 ++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index dfd49732bd5b..518893f23372 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
@@ -1518,7 +1518,8 @@ static int ice_read_ptp_tstamp_eth56g(struct ice_hw *hw, u8 port, u8 idx,
 	 * lower 8 bits in the low register, and the upper 32 bits in the high
 	 * register.
 	 */
-	*tstamp = ((u64)hi) << TS_PHY_HIGH_S | ((u64)lo & TS_PHY_LOW_M);
+	*tstamp = FIELD_PREP(TS_PHY_HIGH_M, hi) |
+		  FIELD_PREP(TS_PHY_LOW_M, lo);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
index 47af7c5c79b8..1cee0f1bba2d 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
@@ -682,9 +682,8 @@ static inline bool ice_is_dual(struct ice_hw *hw)
 #define TS_HIGH_M			0xFF
 #define TS_HIGH_S			32
 
-#define TS_PHY_LOW_M			0xFF
-#define TS_PHY_HIGH_M			0xFFFFFFFF
-#define TS_PHY_HIGH_S			8
+#define TS_PHY_LOW_M			GENMASK(7, 0)
+#define TS_PHY_HIGH_M			GENMASK_ULL(39, 8)
 
 #define BYTES_PER_IDX_ADDR_L_U		8
 #define BYTES_PER_IDX_ADDR_L		4
-- 
2.42.0