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Message-Id: <20221208213932.1274143-4-anthony.l.nguyen@intel.com>
Date:   Thu,  8 Dec 2022 13:39:21 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Karol Kolacinski <karol.kolacinski@...el.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        richardcochran@...il.com, leon@...nel.org, saeed@...nel.org,
        Gurucharan G <gurucharanx.g@...el.com>
Subject: [PATCH net-next v3 03/14] ice: Reset TS memory for all quads

From: Karol Kolacinski <karol.kolacinski@...el.com>

In E822 products, the owner PF should reset memory for all quads, not
only for the one where assigned lport is.

Signed-off-by: Karol Kolacinski <karol.kolacinski@...el.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_ptp.c    | 29 ++--------------
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 38 +++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h |  2 ++
 3 files changed, 42 insertions(+), 27 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 9539d2d37c5b..f93fa0273252 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -1059,19 +1059,6 @@ static u64 ice_base_incval(struct ice_pf *pf)
 	return incval;
 }
 
-/**
- * ice_ptp_reset_ts_memory_quad - Reset timestamp memory for one quad
- * @pf: The PF private data structure
- * @quad: The quad (0-4)
- */
-static void ice_ptp_reset_ts_memory_quad(struct ice_pf *pf, int quad)
-{
-	struct ice_hw *hw = &pf->hw;
-
-	ice_write_quad_reg_e822(hw, quad, Q_REG_TS_CTRL, Q_REG_TS_CTRL_M);
-	ice_write_quad_reg_e822(hw, quad, Q_REG_TS_CTRL, ~(u32)Q_REG_TS_CTRL_M);
-}
-
 /**
  * ice_ptp_check_tx_fifo - Check whether Tx FIFO is in an OK state
  * @port: PTP port for which Tx FIFO is checked
@@ -1124,7 +1111,7 @@ static int ice_ptp_check_tx_fifo(struct ice_ptp_port *port)
 		dev_dbg(ice_pf_to_dev(pf),
 			"Port %d Tx FIFO still not empty; resetting quad %d\n",
 			port->port_num, quad);
-		ice_ptp_reset_ts_memory_quad(pf, quad);
+		ice_ptp_reset_ts_memory_quad_e822(hw, quad);
 		port->tx_fifo_busy_cnt = FIFO_OK;
 		return 0;
 	}
@@ -1370,18 +1357,6 @@ int ice_ptp_link_change(struct ice_pf *pf, u8 port, bool linkup)
 	return ice_ptp_port_phy_restart(ptp_port);
 }
 
-/**
- * ice_ptp_reset_ts_memory - Reset timestamp memory for all quads
- * @pf: The PF private data structure
- */
-static void ice_ptp_reset_ts_memory(struct ice_pf *pf)
-{
-	int quad;
-
-	quad = pf->hw.port_info->lport / ICE_PORTS_PER_QUAD;
-	ice_ptp_reset_ts_memory_quad(pf, quad);
-}
-
 /**
  * ice_ptp_tx_ena_intr - Enable or disable the Tx timestamp interrupt
  * @pf: PF private structure
@@ -1397,7 +1372,7 @@ static int ice_ptp_tx_ena_intr(struct ice_pf *pf, bool ena, u32 threshold)
 	int quad;
 	u32 val;
 
-	ice_ptp_reset_ts_memory(pf);
+	ice_ptp_reset_ts_memory(hw);
 
 	for (quad = 0; quad < ICE_MAX_QUAD; quad++) {
 		err = ice_read_quad_reg_e822(hw, quad, Q_REG_TX_MEM_GBL_CFG,
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index 242c4db65171..6c149b88c235 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
@@ -655,6 +655,32 @@ ice_clear_phy_tstamp_e822(struct ice_hw *hw, u8 quad, u8 idx)
 	return 0;
 }
 
+/**
+ * ice_ptp_reset_ts_memory_quad_e822 - Clear all timestamps from the quad block
+ * @hw: pointer to the HW struct
+ * @quad: the quad to read from
+ *
+ * Clear all timestamps from the PHY quad block that is shared between the
+ * internal PHYs on the E822 devices.
+ */
+void ice_ptp_reset_ts_memory_quad_e822(struct ice_hw *hw, u8 quad)
+{
+	ice_write_quad_reg_e822(hw, quad, Q_REG_TS_CTRL, Q_REG_TS_CTRL_M);
+	ice_write_quad_reg_e822(hw, quad, Q_REG_TS_CTRL, ~(u32)Q_REG_TS_CTRL_M);
+}
+
+/**
+ * ice_ptp_reset_ts_memory_e822 - Clear all timestamps from all quad blocks
+ * @hw: pointer to the HW struct
+ */
+static void ice_ptp_reset_ts_memory_e822(struct ice_hw *hw)
+{
+	unsigned int quad;
+
+	for (quad = 0; quad < ICE_MAX_QUAD; quad++)
+		ice_ptp_reset_ts_memory_quad_e822(hw, quad);
+}
+
 /**
  * ice_read_cgu_reg_e822 - Read a CGU register
  * @hw: pointer to the HW struct
@@ -3247,6 +3273,18 @@ bool ice_is_pca9575_present(struct ice_hw *hw)
 	return !status && handle;
 }
 
+/**
+ * ice_ptp_reset_ts_memory - Reset timestamp memory for all blocks
+ * @hw: pointer to the HW struct
+ */
+void ice_ptp_reset_ts_memory(struct ice_hw *hw)
+{
+	if (ice_is_e810(hw))
+		return;
+
+	ice_ptp_reset_ts_memory_e822(hw);
+}
+
 /**
  * ice_ptp_init_phc - Initialize PTP hardware clock
  * @hw: pointer to the HW struct
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
index db4f57cb9ec9..b0cd73aaac6b 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
@@ -133,6 +133,7 @@ int ice_ptp_write_incval_locked(struct ice_hw *hw, u64 incval);
 int ice_ptp_adj_clock(struct ice_hw *hw, s32 adj);
 int ice_read_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx, u64 *tstamp);
 int ice_clear_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx);
+void ice_ptp_reset_ts_memory(struct ice_hw *hw);
 int ice_ptp_init_phc(struct ice_hw *hw);
 
 /* E822 family functions */
@@ -141,6 +142,7 @@ int ice_write_phy_reg_e822(struct ice_hw *hw, u8 port, u16 offset, u32 val);
 int ice_read_quad_reg_e822(struct ice_hw *hw, u8 quad, u16 offset, u32 *val);
 int ice_write_quad_reg_e822(struct ice_hw *hw, u8 quad, u16 offset, u32 val);
 int ice_ptp_prep_port_adj_e822(struct ice_hw *hw, u8 port, s64 time);
+void ice_ptp_reset_ts_memory_quad_e822(struct ice_hw *hw, u8 quad);
 
 /**
  * ice_e822_time_ref - Get the current TIME_REF from capabilities
-- 
2.35.1

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