[PATCH 1/9] net/ice/base: re-enable bypass mode for E822

[PATCH 1/9] net/ice/base: re-enable bypass mode for E822

[Bruce Richardson]

From: Jacob Keller <jacob.e.keller@intel.com>

When removing bypass mode, the code for E822 bypass was completely
removed in error. This code should be maintained in DPDK so re-add the
necessary functions.

Fixes: ce9ad8c5bc6d ("net/ice/base: remove PHY port timer bypass mode")
Cc: stable@dpdk.org

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/ice/base/ice_ptp_hw.c | 117 ++++++++++++++++++++++++++++--
 drivers/net/ice/base/ice_ptp_hw.h |   2 +-
 drivers/net/ice/ice_ethdev.c      |   2 +-
 3 files changed, 113 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ice/base/ice_ptp_hw.c b/drivers/net/ice/base/ice_ptp_hw.c
index 2a112fea12..1e92e5ff21 100644
--- a/drivers/net/ice/base/ice_ptp_hw.c
+++ b/drivers/net/ice/base/ice_ptp_hw.c
@@ -4468,18 +4468,103 @@ ice_stop_phy_timer_e822(struct ice_hw *hw, u8 port, bool soft_reset)
 	return 0;
 }
 
+/**
+ * ice_phy_cfg_fixed_tx_offset_e822 - Configure Tx offset for bypass mode
+ * @hw: pointer to the HW struct
+ * @port: the PHY port to configure
+ *
+ * Calculate and program the fixed Tx offset, and indicate that the offset is
+ * ready. This can be used when operating in bypass mode.
+ */
+static int ice_phy_cfg_fixed_tx_offset_e822(struct ice_hw *hw, u8 port)
+{
+	enum ice_ptp_link_spd link_spd;
+	enum ice_ptp_fec_mode fec_mode;
+	u64 total_offset;
+	int err;
+
+	err = ice_phy_get_speed_and_fec_e822(hw, port, &link_spd, &fec_mode);
+	if (err)
+		return err;
+
+	total_offset = ice_calc_fixed_tx_offset_e822(hw, link_spd);
+
+	/* Program the fixed Tx offset into the P_REG_TOTAL_TX_OFFSET_L
+	 * register, then indicate that the Tx offset is ready. After this,
+	 * timestamps will be enabled.
+	 *
+	 * Note that this skips including the more precise offsets generated
+	 * by the Vernier calibration.
+	 */
+
+	err = ice_write_64b_phy_reg_e822(hw, port, P_REG_TOTAL_TX_OFFSET_L,
+					 total_offset);
+	if (err)
+		return err;
+
+	err = ice_write_phy_reg_e822(hw, port, P_REG_TX_OR, 1);
+	if (err)
+		return err;
+
+	return ICE_SUCCESS;
+}
+
+/**
+ * ice_phy_cfg_rx_offset_e822 - Configure fixed Rx offset for bypass mode
+ * @hw: pointer to the HW struct
+ * @port: the PHY port to configure
+ *
+ * Calculate and program the fixed Rx offset, and indicate that the offset is
+ * ready. This can be used when operating in bypass mode.
+ */
+static int ice_phy_cfg_fixed_rx_offset_e822(struct ice_hw *hw, u8 port)
+{
+	enum ice_ptp_link_spd link_spd;
+	enum ice_ptp_fec_mode fec_mode;
+	u64 total_offset;
+	int err;
+
+	err = ice_phy_get_speed_and_fec_e822(hw, port, &link_spd, &fec_mode);
+	if (err)
+		return err;
+
+	total_offset = ice_calc_fixed_rx_offset_e822(hw, link_spd);
+
+	/* Program the fixed Rx offset into the P_REG_TOTAL_RX_OFFSET_L
+	 * register, then indicate that the Rx offset is ready. After this,
+	 * timestamps will be enabled.
+	 *
+	 * Note that this skips including the more precise offsets generated
+	 * by Vernier calibration.
+	 */
+	err = ice_write_64b_phy_reg_e822(hw, port, P_REG_TOTAL_RX_OFFSET_L,
+					 total_offset);
+	if (err)
+		return err;
+
+	err = ice_write_phy_reg_e822(hw, port, P_REG_RX_OR, 1);
+	if (err)
+		return err;
+
+	return ICE_SUCCESS;
+}
+
 /**
  * ice_start_phy_timer_e822 - Start the PHY clock timer
  * @hw: pointer to the HW struct
  * @port: the PHY port to start
+ * @bypass: if true, start the PHY in bypass mode
  *
  * Start the clock of a PHY port. This must be done as part of the flow to
  * re-calibrate Tx and Rx timestamping offsets whenever the clock time is
  * initialized or when link speed changes.
  *
- * Hardware will take Vernier measurements on Tx or Rx of packets.
+ * Bypass mode enables timestamps immediately without waiting for Vernier
+ * calibration to complete. Hardware will still continue taking Vernier
+ * measurements on Tx or Rx of packets, but they will not be applied to
+ * timestamps.
  */
-int ice_start_phy_timer_e822(struct ice_hw *hw, u8 port)
+int ice_start_phy_timer_e822(struct ice_hw *hw, u8 port, bool bypass)
 {
 	u32 lo, hi, val;
 	u64 incval;
@@ -4544,15 +4629,35 @@ int ice_start_phy_timer_e822(struct ice_hw *hw, u8 port)
 
 	ice_ptp_exec_tmr_cmd(hw);
 
+	if (bypass) {
+		/* Enter BYPASS mode, enabling timestamps immediately. */
+		val |= P_REG_PS_BYPASS_MODE_M;
+		err = ice_write_phy_reg_e822(hw, port, P_REG_PS, val);
+		if (err)
+			return err;
+	}
+
 	val |= P_REG_PS_ENA_CLK_M;
 	err = ice_write_phy_reg_e822(hw, port, P_REG_PS, val);
 	if (err)
 		return err;
 
-	val |= P_REG_PS_LOAD_OFFSET_M;
-	err = ice_write_phy_reg_e822(hw, port, P_REG_PS, val);
-	if (err)
-		return err;
+	if (bypass) {
+		/* Program the fixed Tx offset */
+		err = ice_phy_cfg_fixed_tx_offset_e822(hw, port);
+		if (err)
+			return err;
+
+		/* Program the fixed Rx offset */
+		err = ice_phy_cfg_fixed_rx_offset_e822(hw, port);
+		if (err)
+			return err;
+	} else {
+		val |= P_REG_PS_LOAD_OFFSET_M;
+		err = ice_write_phy_reg_e822(hw, port, P_REG_PS, val);
+		if (err)
+			return err;
+	}
 
 	ice_ptp_exec_tmr_cmd(hw);
 
diff --git a/drivers/net/ice/base/ice_ptp_hw.h b/drivers/net/ice/base/ice_ptp_hw.h
index 5d6636c0d1..534e05a8dd 100644
--- a/drivers/net/ice/base/ice_ptp_hw.h
+++ b/drivers/net/ice/base/ice_ptp_hw.h
@@ -277,7 +277,7 @@ ice_phy_get_speed_and_fec_e822(struct ice_hw *hw, u8 port,
 void ice_phy_cfg_lane_e822(struct ice_hw *hw, u8 port);
 int
 ice_stop_phy_timer_e822(struct ice_hw *hw, u8 port, bool soft_reset);
-int ice_start_phy_timer_e822(struct ice_hw *hw, u8 port);
+int ice_start_phy_timer_e822(struct ice_hw *hw, u8 port, bool bypass);
 int ice_phy_cfg_tx_offset_e822(struct ice_hw *hw, u8 port);
 int ice_phy_cfg_rx_offset_e822(struct ice_hw *hw, u8 port);
 int
diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 61bff016be..2f9bcbd3a5 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -2540,7 +2540,7 @@ ice_dev_init(struct rte_eth_dev *dev)
 	ice_ptp_init_phy_model(hw);
 
 	if (hw->phy_model == ICE_PHY_E822) {
-		ret = ice_start_phy_timer_e822(hw, hw->pf_id);
+		ret = ice_start_phy_timer_e822(hw, hw->pf_id, true);
 		if (ret)
 			PMD_INIT_LOG(ERR, "Failed to start phy timer");
 	}
-- 
2.43.0

[PATCH 2/9] net/ice/base: add bounds check

[Bruce Richardson]

From: Fabio Pricoco <fabio.pricoco@intel.com>

Refactor while loop to add a check that the values read are in the
correct range.

Fixes: 6c1f26be50a2 ("net/ice/base: add control queue information")
Cc: stable@dpdk.org

Signed-off-by: Fabio Pricoco <fabio.pricoco@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/ice/base/ice_controlq.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ice/base/ice_controlq.c b/drivers/net/ice/base/ice_controlq.c
index af27dc8542..b210495827 100644
--- a/drivers/net/ice/base/ice_controlq.c
+++ b/drivers/net/ice/base/ice_controlq.c
@@ -839,16 +839,35 @@ static u16 ice_clean_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 	struct ice_ctl_q_ring *sq = &cq->sq;
 	u16 ntc = sq->next_to_clean;
 	struct ice_aq_desc *desc;
+	u32 head;
 
 	desc = ICE_CTL_Q_DESC(*sq, ntc);
 
-	while (rd32(hw, cq->sq.head) != ntc) {
-		ice_debug(hw, ICE_DBG_AQ_MSG, "ntc %d head %d.\n", ntc, rd32(hw, cq->sq.head));
+	head = rd32(hw, sq->head);
+	if (head >= sq->count) {
+		ice_debug(hw, ICE_DBG_AQ_MSG,
+			  "Read head value (%d) exceeds allowed range.\n",
+			  head);
+		return 0;
+	}
+
+	while (head != ntc) {
+		ice_debug(hw, ICE_DBG_AQ_MSG,
+			  "ntc %d head %d.\n",
+			  ntc, head);
 		ice_memset(desc, 0, sizeof(*desc), ICE_DMA_MEM);
 		ntc++;
 		if (ntc == sq->count)
 			ntc = 0;
 		desc = ICE_CTL_Q_DESC(*sq, ntc);
+
+		head = rd32(hw, sq->head);
+		if (head >= sq->count) {
+			ice_debug(hw, ICE_DBG_AQ_MSG,
+				  "Read head value (%d) exceeds allowed range.\n",
+				  head);
+			return 0;
+		}
 	}
 
 	sq->next_to_clean = ntc;
-- 
2.43.0

[PATCH 3/9] net/ice/base: fix VLAN replay after reset

[Bruce Richardson]

From: Dave Ertman <david.m.ertman@intel.com>

If there is more than one VLAN defined when any reset that affects the
PF is initiated, after the reset rebuild, no traffic will pass on any
VLAN but the last one created.

This is caused by the iteration though the VLANs during replay each
clearing the vsi_map bitmap of the VSI that is being replayed.  The
problem is that during the replay, the pointer to the vsi_map bitmap is
used by each successive vlan to determine if it should be replayed on
this VSI.

The logic was that the replay of the VLAN would replace the bit in the
map before the next VLAN would iterate through.  But, since the replay
copies the old bitmap pointer to filt_replay_rules and creates a new one
for the recreated VLANS, it does not do this, and leaves the old bitmap
broken to be used to replay the remaining VLANs.

Since the old bitmap will be cleaned up in post replay cleanup, there is
no need to alter it and break following VLAN replay, so don't clear the
bit.

Fixes: c7dd15931183 ("net/ice/base: add virtual switch code")
Cc: stable@dpdk.org

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/ice/base/ice_switch.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ice/base/ice_switch.c b/drivers/net/ice/base/ice_switch.c
index 96ef26d535..a3786961e6 100644
--- a/drivers/net/ice/base/ice_switch.c
+++ b/drivers/net/ice/base/ice_switch.c
@@ -10110,8 +10110,6 @@ ice_replay_vsi_fltr(struct ice_hw *hw, struct ice_port_info *pi,
 		if (!itr->vsi_list_info ||
 		    !ice_is_bit_set(itr->vsi_list_info->vsi_map, vsi_handle))
 			continue;
-		/* Clearing it so that the logic can add it back */
-		ice_clear_bit(vsi_handle, itr->vsi_list_info->vsi_map);
 		f_entry.fltr_info.vsi_handle = vsi_handle;
 		f_entry.fltr_info.fltr_act = ICE_FWD_TO_VSI;
 		/* update the src in case it is VSI num */
--
2.43.0