[PATCH iwl-next v2 0/4] Replace auxbus with ice_adapter in the PTP support code

[PATCH iwl-next v2 0/4] Replace auxbus with ice_adapter in the PTP support code

[Sergey Temerkhanov]

This series replaces multiple aux buses and devices used in the PTP support
code with struct ice_adapter holding the necessary shared data

Patches 1,2 add convenience wrappers
Patch 3 does the main refactoring
Patch 4 finalizes the refactoring

Previous discussion: https://lists.osuosl.org/pipermail/intel-wired-lan/Week-of-Mon-20240624/042430.html

v1->v2: Code rearrangement between patches

Sergey Temerkhanov (4):
  ice: Introduce ice_get_phy_model() wrapper
  ice: Add ice_get_ctrl_ptp() wrapper to simplify the code
  ice: Use ice_adapter for PTP shared data instead of auxdev
  ice: Drop auxbus use for PTP to finalize ice_adapter move

 drivers/net/ethernet/intel/ice/ice.h         |   5 +
 drivers/net/ethernet/intel/ice/ice_adapter.c |   6 +
 drivers/net/ethernet/intel/ice/ice_adapter.h |  22 +-
 drivers/net/ethernet/intel/ice/ice_ptp.c     | 337 ++++---------------
 drivers/net/ethernet/intel/ice/ice_ptp.h     |  24 +-
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c  |  22 +-
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h  |   5 +
 7 files changed, 112 insertions(+), 309 deletions(-)

-- 
2.43.0

[PATCH iwl-next v2 1/4] ice: Introduce ice_get_phy_model() wrapper

[Sergey Temerkhanov]

Introduce ice_get_phy_model() to improve code readability

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
---
 drivers/net/ethernet/intel/ice/ice.h        |  5 +++++
 drivers/net/ethernet/intel/ice/ice_ptp.c    | 18 ++++++++---------
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 22 ++++++++++-----------
 3 files changed, 25 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 4c563b0d57ac..b43719ee8324 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -1046,5 +1046,10 @@ static inline void ice_clear_rdma_cap(struct ice_pf *pf)
 	clear_bit(ICE_FLAG_RDMA_ENA, pf->flags);
 }
 
+static inline enum ice_phy_model ice_get_phy_model(const struct ice_hw *hw)
+{
+	return hw->ptp.phy_model;
+}
+
 extern const struct xdp_metadata_ops ice_xdp_md_ops;
 #endif /* _ICE_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index b652a3e25619..2f32dcd42581 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -1372,7 +1372,7 @@ ice_ptp_port_phy_stop(struct ice_ptp_port *ptp_port)
 
 	mutex_lock(&ptp_port->ps_lock);
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		err = ice_stop_phy_timer_eth56g(hw, port, true);
 		break;
@@ -1418,7 +1418,7 @@ ice_ptp_port_phy_restart(struct ice_ptp_port *ptp_port)
 
 	mutex_lock(&ptp_port->ps_lock);
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		err = ice_start_phy_timer_eth56g(hw, port);
 		break;
@@ -1486,7 +1486,7 @@ void ice_ptp_link_change(struct ice_pf *pf, u8 port, bool linkup)
 	/* Update cached link status for this port immediately */
 	ptp_port->link_up = linkup;
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_E810:
 		/* Do not reconfigure E810 PHY */
 		return;
@@ -1519,7 +1519,7 @@ static int ice_ptp_cfg_phy_interrupt(struct ice_pf *pf, bool ena, u32 threshold)
 
 	ice_ptp_reset_ts_memory(hw);
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G: {
 		int port;
 
@@ -1558,7 +1558,7 @@ static int ice_ptp_cfg_phy_interrupt(struct ice_pf *pf, bool ena, u32 threshold)
 	case ICE_PHY_UNSUP:
 	default:
 		dev_warn(dev, "%s: Unexpected PHY model %d\n", __func__,
-			 hw->ptp.phy_model);
+			 ice_get_phy_model(hw));
 		return -EOPNOTSUPP;
 	}
 }
@@ -2065,7 +2065,7 @@ ice_ptp_settime64(struct ptp_clock_info *info, const struct timespec64 *ts)
 	/* For Vernier mode on E82X, we need to recalibrate after new settime.
 	 * Start with marking timestamps as invalid.
 	 */
-	if (hw->ptp.phy_model == ICE_PHY_E82X) {
+	if (ice_get_phy_model(hw) == ICE_PHY_E82X) {
 		err = ice_ptp_clear_phy_offset_ready_e82x(hw);
 		if (err)
 			dev_warn(ice_pf_to_dev(pf), "Failed to mark timestamps as invalid before settime\n");
@@ -2089,7 +2089,7 @@ ice_ptp_settime64(struct ptp_clock_info *info, const struct timespec64 *ts)
 	ice_ptp_enable_all_clkout(pf);
 
 	/* Recalibrate and re-enable timestamp blocks for E822/E823 */
-	if (hw->ptp.phy_model == ICE_PHY_E82X)
+	if (ice_get_phy_model(hw) == ICE_PHY_E82X)
 		ice_ptp_restart_all_phy(pf);
 exit:
 	if (err) {
@@ -3214,7 +3214,7 @@ static int ice_ptp_init_port(struct ice_pf *pf, struct ice_ptp_port *ptp_port)
 
 	mutex_init(&ptp_port->ps_lock);
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_ptp_init_tx_eth56g(pf, &ptp_port->tx,
 					      ptp_port->port_num);
@@ -3312,7 +3312,7 @@ static void ice_ptp_remove_auxbus_device(struct ice_pf *pf)
  */
 static void ice_ptp_init_tx_interrupt_mode(struct ice_pf *pf)
 {
-	switch (pf->hw.ptp.phy_model) {
+	switch (ice_get_phy_model(&pf->hw)) {
 	case ICE_PHY_E82X:
 		/* E822 based PHY has the clock owner process the interrupt
 		 * for all ports.
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index 3a33e6b9b313..4558c9bda67f 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
@@ -806,7 +806,7 @@ static u32 ice_ptp_tmr_cmd_to_port_reg(struct ice_hw *hw,
 	/* Certain hardware families share the same register values for the
 	 * port register and source timer register.
 	 */
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_E810:
 		return ice_ptp_tmr_cmd_to_src_reg(hw, cmd) & TS_CMD_MASK_E810;
 	default:
@@ -5419,7 +5419,7 @@ void ice_ptp_init_hw(struct ice_hw *hw)
 static int ice_ptp_write_port_cmd(struct ice_hw *hw, u8 port,
 				  enum ice_ptp_tmr_cmd cmd)
 {
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_ptp_write_port_cmd_eth56g(hw, port, cmd);
 	case ICE_PHY_E82X:
@@ -5484,7 +5484,7 @@ static int ice_ptp_port_cmd(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
 	u32 port;
 
 	/* PHY models which can program all ports simultaneously */
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_E810:
 		return ice_ptp_port_cmd_e810(hw, cmd);
 	default:
@@ -5563,7 +5563,7 @@ int ice_ptp_init_time(struct ice_hw *hw, u64 time)
 
 	/* PHY timers */
 	/* Fill Rx and Tx ports and send msg to PHY */
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		err = ice_ptp_prep_phy_time_eth56g(hw,
 						   (u32)(time & 0xFFFFFFFF));
@@ -5609,7 +5609,7 @@ int ice_ptp_write_incval(struct ice_hw *hw, u64 incval)
 	wr32(hw, GLTSYN_SHADJ_L(tmr_idx), lower_32_bits(incval));
 	wr32(hw, GLTSYN_SHADJ_H(tmr_idx), upper_32_bits(incval));
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		err = ice_ptp_prep_phy_incval_eth56g(hw, incval);
 		break;
@@ -5678,7 +5678,7 @@ int ice_ptp_adj_clock(struct ice_hw *hw, s32 adj)
 	wr32(hw, GLTSYN_SHADJ_L(tmr_idx), 0);
 	wr32(hw, GLTSYN_SHADJ_H(tmr_idx), adj);
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		err = ice_ptp_prep_phy_adj_eth56g(hw, adj);
 		break;
@@ -5711,7 +5711,7 @@ 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)
 {
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_read_ptp_tstamp_eth56g(hw, block, idx, tstamp);
 	case ICE_PHY_E810:
@@ -5741,7 +5741,7 @@ 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)
 {
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_clear_ptp_tstamp_eth56g(hw, block, idx);
 	case ICE_PHY_E810:
@@ -5804,7 +5804,7 @@ static int ice_get_pf_c827_idx(struct ice_hw *hw, u8 *idx)
  */
 void ice_ptp_reset_ts_memory(struct ice_hw *hw)
 {
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		ice_ptp_reset_ts_memory_eth56g(hw);
 		break;
@@ -5833,7 +5833,7 @@ int ice_ptp_init_phc(struct ice_hw *hw)
 	/* Clear event err indications for auxiliary pins */
 	(void)rd32(hw, GLTSYN_STAT(src_idx));
 
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_ptp_init_phc_eth56g(hw);
 	case ICE_PHY_E810:
@@ -5858,7 +5858,7 @@ int ice_ptp_init_phc(struct ice_hw *hw)
  */
 int ice_get_phy_tx_tstamp_ready(struct ice_hw *hw, u8 block, u64 *tstamp_ready)
 {
-	switch (hw->ptp.phy_model) {
+	switch (ice_get_phy_model(hw)) {
 	case ICE_PHY_ETH56G:
 		return ice_get_phy_tx_tstamp_ready_eth56g(hw, block,
 							  tstamp_ready);
-- 
2.43.0

Re: [PATCH iwl-next v2 1/4] ice: Introduce ice_get_phy_model() wrapper

[Simon Horman]

On Wed, Jun 26, 2024 at 02:54:53PM +0200, Sergey Temerkhanov wrote:
> Introduce ice_get_phy_model() to improve code readability
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>

Reviewed-by: Simon Horman <horms@kernel.org>

[PATCH iwl-next v2 2/4] ice: Add ice_get_ctrl_ptp() wrapper to simplify the code

[Sergey Temerkhanov]

Add ice_get_ctrl_ptp() wrapper to simplify the PTP support code
in the functions that do not use ctrl_pf directly.
Add the control PF pointer to struct ice_adapter

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_adapter.h |  4 ++++
 drivers/net/ethernet/intel/ice/ice_ptp.c     | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_adapter.h b/drivers/net/ethernet/intel/ice/ice_adapter.h
index 9d11014ec02f..c5ed6f56b36e 100644
--- a/drivers/net/ethernet/intel/ice/ice_adapter.h
+++ b/drivers/net/ethernet/intel/ice/ice_adapter.h
@@ -8,18 +8,22 @@
 #include <linux/refcount_types.h>
 
 struct pci_dev;
+struct ice_pf;
 
 /**
  * struct ice_adapter - PCI adapter resources shared across PFs
  * @ptp_gltsyn_time_lock: Spinlock protecting access to the GLTSYN_TIME
  *                        register of the PTP clock.
  * @refcount: Reference count. struct ice_pf objects hold the references.
+ * @ctrl_pf: Control PF of the adapter
  */
 struct ice_adapter {
 	/* For access to the GLTSYN_TIME register */
 	spinlock_t ptp_gltsyn_time_lock;
 
 	refcount_t refcount;
+
+	struct ice_pf *ctrl_pf;
 };
 
 struct ice_adapter *ice_adapter_get(const struct pci_dev *pdev);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 2f32dcd42581..53a3b6fc9dec 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -16,6 +16,18 @@ static const struct ptp_pin_desc ice_pin_desc_e810t[] = {
 	{ "U.FL2", UFL2, PTP_PF_NONE, 2, { 0, } },
 };
 
+static struct ice_pf *ice_get_ctrl_pf(struct ice_pf *pf)
+{
+	return !pf->adapter ? NULL : pf->adapter->ctrl_pf;
+}
+
+static __maybe_unused struct ice_ptp *ice_get_ctrl_ptp(struct ice_pf *pf)
+{
+	struct ice_pf *ctrl_pf = ice_get_ctrl_pf(pf);
+
+	return !ctrl_pf ? NULL : &ctrl_pf->ptp;
+}
+
 /**
  * ice_get_sma_config_e810t
  * @hw: pointer to the hw struct
-- 
2.43.0

Re: [PATCH iwl-next v2 2/4] ice: Add ice_get_ctrl_ptp() wrapper to simplify the code

[Simon Horman]

On Wed, Jun 26, 2024 at 02:54:54PM +0200, Sergey Temerkhanov wrote:
> Add ice_get_ctrl_ptp() wrapper to simplify the PTP support code
> in the functions that do not use ctrl_pf directly.
> Add the control PF pointer to struct ice_adapter
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>

Reviewed-by: Simon Horman <horms@kernel.org>

[PATCH iwl-next v2 3/4] ice: Use ice_adapter for PTP shared data instead of auxdev

[Sergey Temerkhanov]

Use struct ice_adapter to hold shared PTP data and control PTP
related actions instead of auxbus. This allows significant code
simplification and faster access to the container fields used in
the PTP support code.

Move the PTP port list to the ice_adapter container to simplify
the code and avoid race conditions which could occur due to the
synchronous nature of the initialization/access and
certain memory saving can be achieved by moving PTP data into
the ice_adapter itself.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_adapter.c |   6 ++
 drivers/net/ethernet/intel/ice/ice_adapter.h |  18 +++-
 drivers/net/ethernet/intel/ice/ice_ptp.c     | 101 ++++++++++++-------
 drivers/net/ethernet/intel/ice/ice_ptp.h     |   3 +
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h  |   5 +
 5 files changed, 95 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_adapter.c b/drivers/net/ethernet/intel/ice/ice_adapter.c
index ad84d8ad49a6..f3e195974a8e 100644
--- a/drivers/net/ethernet/intel/ice/ice_adapter.c
+++ b/drivers/net/ethernet/intel/ice/ice_adapter.c
@@ -40,11 +40,17 @@ static struct ice_adapter *ice_adapter_new(void)
 	spin_lock_init(&adapter->ptp_gltsyn_time_lock);
 	refcount_set(&adapter->refcount, 1);
 
+	mutex_init(&adapter->ports.lock);
+	INIT_LIST_HEAD(&adapter->ports.ports);
+
 	return adapter;
 }
 
 static void ice_adapter_free(struct ice_adapter *adapter)
 {
+	WARN_ON(!list_empty(&adapter->ports.ports));
+	mutex_destroy(&adapter->ports.lock);
+
 	kfree(adapter);
 }
 
diff --git a/drivers/net/ethernet/intel/ice/ice_adapter.h b/drivers/net/ethernet/intel/ice/ice_adapter.h
index c5ed6f56b36e..7f54167779b9 100644
--- a/drivers/net/ethernet/intel/ice/ice_adapter.h
+++ b/drivers/net/ethernet/intel/ice/ice_adapter.h
@@ -4,26 +4,42 @@
 #ifndef _ICE_ADAPTER_H_
 #define _ICE_ADAPTER_H_
 
+#include <linux/types.h>
 #include <linux/spinlock_types.h>
 #include <linux/refcount_types.h>
 
 struct pci_dev;
 struct ice_pf;
 
+/**
+ * struct ice_port_list - data used to store the list of adapter ports
+ *
+ * This structure contains data used to maintain a list of adapter ports
+ *
+ * @ports: list of ports
+ * @lock: protect access to the ports list
+ */
+struct ice_port_list {
+	struct list_head ports;
+	/* To synchronize the ports list operations */
+	struct mutex lock;
+};
+
 /**
  * struct ice_adapter - PCI adapter resources shared across PFs
  * @ptp_gltsyn_time_lock: Spinlock protecting access to the GLTSYN_TIME
  *                        register of the PTP clock.
  * @refcount: Reference count. struct ice_pf objects hold the references.
  * @ctrl_pf: Control PF of the adapter
+ * @ports: Ports list
  */
 struct ice_adapter {
 	/* For access to the GLTSYN_TIME register */
 	spinlock_t ptp_gltsyn_time_lock;
-
 	refcount_t refcount;
 
 	struct ice_pf *ctrl_pf;
+	struct ice_port_list ports;
 };
 
 struct ice_adapter *ice_adapter_get(const struct pci_dev *pdev);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 53a3b6fc9dec..1740c8f1fb61 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -21,7 +21,7 @@ static struct ice_pf *ice_get_ctrl_pf(struct ice_pf *pf)
 	return !pf->adapter ? NULL : pf->adapter->ctrl_pf;
 }
 
-static __maybe_unused struct ice_ptp *ice_get_ctrl_ptp(struct ice_pf *pf)
+static struct ice_ptp *ice_get_ctrl_ptp(struct ice_pf *pf)
 {
 	struct ice_pf *ctrl_pf = ice_get_ctrl_pf(pf);
 
@@ -821,8 +821,8 @@ static enum ice_tx_tstamp_work ice_ptp_tx_tstamp_owner(struct ice_pf *pf)
 	struct ice_ptp_port *port;
 	unsigned int i;
 
-	mutex_lock(&pf->ptp.ports_owner.lock);
-	list_for_each_entry(port, &pf->ptp.ports_owner.ports, list_member) {
+	mutex_lock(&pf->adapter->ports.lock);
+	list_for_each_entry(port, &pf->adapter->ports.ports, list_node) {
 		struct ice_ptp_tx *tx = &port->tx;
 
 		if (!tx || !tx->init)
@@ -830,7 +830,7 @@ static enum ice_tx_tstamp_work ice_ptp_tx_tstamp_owner(struct ice_pf *pf)
 
 		ice_ptp_process_tx_tstamp(tx);
 	}
-	mutex_unlock(&pf->ptp.ports_owner.lock);
+	mutex_unlock(&pf->adapter->ports.lock);
 
 	for (i = 0; i < ICE_GET_QUAD_NUM(pf->hw.ptp.num_lports); i++) {
 		u64 tstamp_ready;
@@ -995,7 +995,7 @@ ice_ptp_flush_all_tx_tracker(struct ice_pf *pf)
 {
 	struct ice_ptp_port *port;
 
-	list_for_each_entry(port, &pf->ptp.ports_owner.ports, list_member)
+	list_for_each_entry(port, &pf->adapter->ports.ports, list_node)
 		ice_ptp_flush_tx_tracker(ptp_port_to_pf(port), &port->tx);
 }
 
@@ -1592,10 +1592,10 @@ static void ice_ptp_restart_all_phy(struct ice_pf *pf)
 {
 	struct list_head *entry;
 
-	list_for_each(entry, &pf->ptp.ports_owner.ports) {
+	list_for_each(entry, &pf->adapter->ports.ports) {
 		struct ice_ptp_port *port = list_entry(entry,
 						       struct ice_ptp_port,
-						       list_member);
+						       list_node);
 
 		if (port->link_up)
 			ice_ptp_port_phy_restart(port);
@@ -2912,6 +2912,44 @@ void ice_ptp_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
 	dev_err(ice_pf_to_dev(pf), "PTP reset failed %d\n", err);
 }
 
+static int ice_ptp_setup_adapter(struct ice_pf *pf)
+{
+	if (!ice_pf_src_tmr_owned(pf) || !ice_is_primary(&pf->hw))
+		return -EPERM;
+
+	pf->adapter->ctrl_pf = pf;
+
+	return 0;
+}
+
+static int ice_ptp_setup_pf(struct ice_pf *pf)
+{
+	struct ice_ptp *ctrl_ptp = ice_get_ctrl_ptp(pf);
+	struct ice_ptp *ptp = &pf->ptp;
+
+	if (WARN_ON(!ctrl_ptp) || ice_get_phy_model(&pf->hw) == ICE_PHY_UNSUP)
+		return -ENODEV;
+
+	INIT_LIST_HEAD(&ptp->port.list_node);
+	mutex_lock(&pf->adapter->ports.lock);
+
+	list_add(&ptp->port.list_node,
+		 &pf->adapter->ports.ports);
+	mutex_unlock(&pf->adapter->ports.lock);
+
+	return 0;
+}
+
+static void ice_ptp_cleanup_pf(struct ice_pf *pf)
+{
+	struct ice_ptp *ptp = &pf->ptp;
+
+	if (ice_get_phy_model(&pf->hw) != ICE_PHY_UNSUP) {
+		mutex_lock(&pf->adapter->ports.lock);
+		list_del(&ptp->port.list_node);
+		mutex_unlock(&pf->adapter->ports.lock);
+	}
+}
 /**
  * ice_ptp_aux_dev_to_aux_pf - Get auxiliary PF handle for the auxiliary device
  * @aux_dev: auxiliary device to get the auxiliary PF for
@@ -3042,7 +3080,7 @@ ice_ptp_auxbus_create_id_table(struct ice_pf *pf, const char *name)
  * ice_ptp_register_auxbus_driver - Register PTP auxiliary bus driver
  * @pf: Board private structure
  */
-static int ice_ptp_register_auxbus_driver(struct ice_pf *pf)
+static int __always_unused ice_ptp_register_auxbus_driver(struct ice_pf *pf)
 {
 	struct auxiliary_driver *aux_driver;
 	struct ice_ptp *ptp;
@@ -3085,7 +3123,7 @@ static int ice_ptp_register_auxbus_driver(struct ice_pf *pf)
  * ice_ptp_unregister_auxbus_driver - Unregister PTP auxiliary bus driver
  * @pf: Board private structure
  */
-static void ice_ptp_unregister_auxbus_driver(struct ice_pf *pf)
+static void __always_unused ice_ptp_unregister_auxbus_driver(struct ice_pf *pf)
 {
 	struct auxiliary_driver *aux_driver = &pf->ptp.ports_owner.aux_driver;
 
@@ -3104,15 +3142,12 @@ static void ice_ptp_unregister_auxbus_driver(struct ice_pf *pf)
  */
 int ice_ptp_clock_index(struct ice_pf *pf)
 {
-	struct auxiliary_device *aux_dev;
-	struct ice_pf *owner_pf;
+	struct ice_ptp *ctrl_ptp = ice_get_ctrl_ptp(pf);
 	struct ptp_clock *clock;
 
-	aux_dev = &pf->ptp.port.aux_dev;
-	owner_pf = ice_ptp_aux_dev_to_owner_pf(aux_dev);
-	if (!owner_pf)
+	if (!ctrl_ptp)
 		return -1;
-	clock = owner_pf->ptp.clock;
+	clock = ctrl_ptp->clock;
 
 	return clock ? ptp_clock_index(clock) : -1;
 }
@@ -3172,15 +3207,7 @@ static int ice_ptp_init_owner(struct ice_pf *pf)
 	if (err)
 		goto err_clk;
 
-	err = ice_ptp_register_auxbus_driver(pf);
-	if (err) {
-		dev_err(ice_pf_to_dev(pf), "Failed to register PTP auxbus driver");
-		goto err_aux;
-	}
-
 	return 0;
-err_aux:
-	ptp_clock_unregister(pf->ptp.clock);
 err_clk:
 	pf->ptp.clock = NULL;
 err_exit:
@@ -3256,7 +3283,7 @@ static void ice_ptp_release_auxbus_device(struct device *dev)
  * ice_ptp_create_auxbus_device - Create PTP auxiliary bus device
  * @pf: Board private structure
  */
-static int ice_ptp_create_auxbus_device(struct ice_pf *pf)
+static __always_unused int ice_ptp_create_auxbus_device(struct ice_pf *pf)
 {
 	struct auxiliary_device *aux_dev;
 	struct ice_ptp *ptp;
@@ -3303,7 +3330,7 @@ static int ice_ptp_create_auxbus_device(struct ice_pf *pf)
  * ice_ptp_remove_auxbus_device - Remove PTP auxiliary bus device
  * @pf: Board private structure
  */
-static void ice_ptp_remove_auxbus_device(struct ice_pf *pf)
+static __always_unused void ice_ptp_remove_auxbus_device(struct ice_pf *pf)
 {
 	struct auxiliary_device *aux_dev = &pf->ptp.port.aux_dev;
 
@@ -3368,18 +3395,25 @@ void ice_ptp_init(struct ice_pf *pf)
 	 * configure the PTP clock device to represent it.
 	 */
 	if (ice_pf_src_tmr_owned(pf)) {
+		err = ice_ptp_setup_adapter(pf);
+		if (err)
+			goto err_exit;
 		err = ice_ptp_init_owner(pf);
 		if (err)
-			goto err;
+			goto err_exit;
 	}
 
+	err = ice_ptp_setup_pf(pf);
+	if (err)
+		goto err_exit;
+
 	ptp->port.port_num = hw->pf_id;
 	if (ice_is_e825c(hw) && hw->ptp.is_2x50g_muxed_topo)
 		ptp->port.port_num = hw->pf_id * 2;
 
 	err = ice_ptp_init_port(pf, &ptp->port);
 	if (err)
-		goto err;
+		goto err_exit;
 
 	/* Start the PHY timestamping block */
 	ice_ptp_reset_phy_timestamping(pf);
@@ -3387,20 +3421,16 @@ void ice_ptp_init(struct ice_pf *pf)
 	/* Configure initial Tx interrupt settings */
 	ice_ptp_cfg_tx_interrupt(pf);
 
-	err = ice_ptp_create_auxbus_device(pf);
-	if (err)
-		goto err;
-
 	ptp->state = ICE_PTP_READY;
 
 	err = ice_ptp_init_work(pf, ptp);
 	if (err)
-		goto err;
+		goto err_exit;
 
 	dev_info(ice_pf_to_dev(pf), "PTP init successful\n");
 	return;
 
-err:
+err_exit:
 	/* If we registered a PTP clock, release it */
 	if (pf->ptp.clock) {
 		ptp_clock_unregister(ptp->clock);
@@ -3427,7 +3457,7 @@ void ice_ptp_release(struct ice_pf *pf)
 	/* Disable timestamping for both Tx and Rx */
 	ice_ptp_disable_timestamp_mode(pf);
 
-	ice_ptp_remove_auxbus_device(pf);
+	ice_ptp_cleanup_pf(pf);
 
 	ice_ptp_release_tx_tracker(pf, &pf->ptp.port.tx);
 
@@ -3442,9 +3472,6 @@ void ice_ptp_release(struct ice_pf *pf)
 		pf->ptp.kworker = NULL;
 	}
 
-	if (ice_pf_src_tmr_owned(pf))
-		ice_ptp_unregister_auxbus_driver(pf);
-
 	if (!pf->ptp.clock)
 		return;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h
index 1d87dd67284d..de73762e6f27 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.h
@@ -170,6 +170,7 @@ struct ice_ptp_tx {
  * and determine when the port's PHY offset is valid.
  *
  * @list_member: list member structure of auxiliary device
+ * @list_node: list member structure
  * @tx: Tx timestamp tracking for this port
  * @aux_dev: auxiliary device associated with this port
  * @ov_work: delayed work task for tracking when PHY offset is valid
@@ -180,6 +181,7 @@ struct ice_ptp_tx {
  */
 struct ice_ptp_port {
 	struct list_head list_member;
+	struct list_head list_node;
 	struct ice_ptp_tx tx;
 	struct auxiliary_device aux_dev;
 	struct kthread_delayed_work ov_work;
@@ -205,6 +207,7 @@ enum ice_ptp_tx_interrupt {
  * @ports: list of porst handled by this port owner
  * @lock: protect access to ports list
  */
+
 struct ice_ptp_port_owner {
 	struct auxiliary_driver aux_driver;
 	struct list_head ports;
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
index 0852a34ade91..eceec2919159 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
@@ -451,6 +451,11 @@ static inline u64 ice_get_base_incval(struct ice_hw *hw)
 	}
 }
 
+static inline bool ice_is_primary(struct ice_hw *hw)
+{
+	return !!(hw->dev_caps.nac_topo.mode & ICE_NAC_TOPO_PRIMARY_M);
+}
+
 #define PFTSYN_SEM_BYTES	4
 
 #define ICE_PTP_CLOCK_INDEX_0	0x00
-- 
2.43.0

Re: [PATCH iwl-next v2 3/4] ice: Use ice_adapter for PTP shared data instead of auxdev

[Simon Horman]

On Wed, Jun 26, 2024 at 02:54:55PM +0200, Sergey Temerkhanov wrote:
> Use struct ice_adapter to hold shared PTP data and control PTP
> related actions instead of auxbus. This allows significant code
> simplification and faster access to the container fields used in
> the PTP support code.
> 
> Move the PTP port list to the ice_adapter container to simplify
> the code and avoid race conditions which could occur due to the
> synchronous nature of the initialization/access and
> certain memory saving can be achieved by moving PTP data into
> the ice_adapter itself.
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>

The nit below notwithstanding, this looks good to me.

Reviewed-by: Simon Horman <horms@kernel.org>

...

> diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h
> index 1d87dd67284d..de73762e6f27 100644
> --- a/drivers/net/ethernet/intel/ice/ice_ptp.h
> +++ b/drivers/net/ethernet/intel/ice/ice_ptp.h
> @@ -170,6 +170,7 @@ struct ice_ptp_tx {
>   * and determine when the port's PHY offset is valid.
>   *
>   * @list_member: list member structure of auxiliary device
> + * @list_node: list member structure
>   * @tx: Tx timestamp tracking for this port
>   * @aux_dev: auxiliary device associated with this port
>   * @ov_work: delayed work task for tracking when PHY offset is valid
> @@ -180,6 +181,7 @@ struct ice_ptp_tx {
>   */
>  struct ice_ptp_port {
>  	struct list_head list_member;
> +	struct list_head list_node;
>  	struct ice_ptp_tx tx;
>  	struct auxiliary_device aux_dev;
>  	struct kthread_delayed_work ov_work;
> @@ -205,6 +207,7 @@ enum ice_ptp_tx_interrupt {
>   * @ports: list of porst handled by this port owner
>   * @lock: protect access to ports list
>   */
> +
>  struct ice_ptp_port_owner {
>  	struct auxiliary_driver aux_driver;
>  	struct list_head ports;

nit: the change in the hunk above seems unnecessary.

...

Re: [PATCH iwl-next v2 3/4] ice: Use ice_adapter for PTP shared data instead of auxdev

[Przemek Kitszel]

On 6/26/24 14:54, Sergey Temerkhanov wrote:
> Use struct ice_adapter to hold shared PTP data and control PTP
> related actions instead of auxbus. This allows significant code
> simplification and faster access to the container fields used in
> the PTP support code.
> 
> Move the PTP port list to the ice_adapter container to simplify
> the code and avoid race conditions which could occur due to the
> synchronous nature of the initialization/access and
> certain memory saving can be achieved by moving PTP data into
> the ice_adapter itself.
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
> ---
>   drivers/net/ethernet/intel/ice/ice_adapter.c |   6 ++
>   drivers/net/ethernet/intel/ice/ice_adapter.h |  18 +++-
>   drivers/net/ethernet/intel/ice/ice_ptp.c     | 101 ++++++++++++-------
>   drivers/net/ethernet/intel/ice/ice_ptp.h     |   3 +
>   drivers/net/ethernet/intel/ice/ice_ptp_hw.h  |   5 +
>   5 files changed, 95 insertions(+), 38 deletions(-)
> 

[...]

>   /**
>    * struct ice_adapter - PCI adapter resources shared across PFs
>    * @ptp_gltsyn_time_lock: Spinlock protecting access to the GLTSYN_TIME
>    *                        register of the PTP clock.
>    * @refcount: Reference count. struct ice_pf objects hold the references.
>    * @ctrl_pf: Control PF of the adapter
> + * @ports: Ports list
>    */
>   struct ice_adapter {
>   	/* For access to the GLTSYN_TIME register */
>   	spinlock_t ptp_gltsyn_time_lock;
> -
>   	refcount_t refcount;

Michal has pointed out that @refcount is special in that it protecting
whole struct ice_adapter, so should be kept as the last (but as you see
it's problematic) or as the first :)

>   
>   	struct ice_pf *ctrl_pf;
> +	struct ice_port_list ports;
>   };
>   

[...]

[PATCH iwl-next v2 4/4] ice: Drop auxbus use for PTP to finalize ice_adapter move

[Sergey Temerkhanov]

Drop unused auxbus/auxdev support from the PTP code due to
move to the ice_adapter.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_ptp.c | 252 -----------------------
 drivers/net/ethernet/intel/ice/ice_ptp.h |  23 ---
 2 files changed, 275 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 1740c8f1fb61..c2dda9a8614f 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -2950,188 +2950,6 @@ static void ice_ptp_cleanup_pf(struct ice_pf *pf)
 		mutex_unlock(&pf->adapter->ports.lock);
 	}
 }
-/**
- * ice_ptp_aux_dev_to_aux_pf - Get auxiliary PF handle for the auxiliary device
- * @aux_dev: auxiliary device to get the auxiliary PF for
- */
-static struct ice_pf *
-ice_ptp_aux_dev_to_aux_pf(struct auxiliary_device *aux_dev)
-{
-	struct ice_ptp_port *aux_port;
-	struct ice_ptp *aux_ptp;
-
-	aux_port = container_of(aux_dev, struct ice_ptp_port, aux_dev);
-	aux_ptp = container_of(aux_port, struct ice_ptp, port);
-
-	return container_of(aux_ptp, struct ice_pf, ptp);
-}
-
-/**
- * ice_ptp_aux_dev_to_owner_pf - Get PF handle for the auxiliary device
- * @aux_dev: auxiliary device to get the PF for
- */
-static struct ice_pf *
-ice_ptp_aux_dev_to_owner_pf(struct auxiliary_device *aux_dev)
-{
-	struct ice_ptp_port_owner *ports_owner;
-	struct auxiliary_driver *aux_drv;
-	struct ice_ptp *owner_ptp;
-
-	if (!aux_dev->dev.driver)
-		return NULL;
-
-	aux_drv = to_auxiliary_drv(aux_dev->dev.driver);
-	ports_owner = container_of(aux_drv, struct ice_ptp_port_owner,
-				   aux_driver);
-	owner_ptp = container_of(ports_owner, struct ice_ptp, ports_owner);
-	return container_of(owner_ptp, struct ice_pf, ptp);
-}
-
-/**
- * ice_ptp_auxbus_probe - Probe auxiliary devices
- * @aux_dev: PF's auxiliary device
- * @id: Auxiliary device ID
- */
-static int ice_ptp_auxbus_probe(struct auxiliary_device *aux_dev,
-				const struct auxiliary_device_id *id)
-{
-	struct ice_pf *owner_pf = ice_ptp_aux_dev_to_owner_pf(aux_dev);
-	struct ice_pf *aux_pf = ice_ptp_aux_dev_to_aux_pf(aux_dev);
-
-	if (WARN_ON(!owner_pf))
-		return -ENODEV;
-
-	INIT_LIST_HEAD(&aux_pf->ptp.port.list_member);
-	mutex_lock(&owner_pf->ptp.ports_owner.lock);
-	list_add(&aux_pf->ptp.port.list_member,
-		 &owner_pf->ptp.ports_owner.ports);
-	mutex_unlock(&owner_pf->ptp.ports_owner.lock);
-
-	return 0;
-}
-
-/**
- * ice_ptp_auxbus_remove - Remove auxiliary devices from the bus
- * @aux_dev: PF's auxiliary device
- */
-static void ice_ptp_auxbus_remove(struct auxiliary_device *aux_dev)
-{
-	struct ice_pf *owner_pf = ice_ptp_aux_dev_to_owner_pf(aux_dev);
-	struct ice_pf *aux_pf = ice_ptp_aux_dev_to_aux_pf(aux_dev);
-
-	mutex_lock(&owner_pf->ptp.ports_owner.lock);
-	list_del(&aux_pf->ptp.port.list_member);
-	mutex_unlock(&owner_pf->ptp.ports_owner.lock);
-}
-
-/**
- * ice_ptp_auxbus_shutdown
- * @aux_dev: PF's auxiliary device
- */
-static void ice_ptp_auxbus_shutdown(struct auxiliary_device *aux_dev)
-{
-	/* Doing nothing here, but handle to auxbus driver must be satisfied */
-}
-
-/**
- * ice_ptp_auxbus_suspend
- * @aux_dev: PF's auxiliary device
- * @state: power management state indicator
- */
-static int
-ice_ptp_auxbus_suspend(struct auxiliary_device *aux_dev, pm_message_t state)
-{
-	/* Doing nothing here, but handle to auxbus driver must be satisfied */
-	return 0;
-}
-
-/**
- * ice_ptp_auxbus_resume
- * @aux_dev: PF's auxiliary device
- */
-static int ice_ptp_auxbus_resume(struct auxiliary_device *aux_dev)
-{
-	/* Doing nothing here, but handle to auxbus driver must be satisfied */
-	return 0;
-}
-
-/**
- * ice_ptp_auxbus_create_id_table - Create auxiliary device ID table
- * @pf: Board private structure
- * @name: auxiliary bus driver name
- */
-static struct auxiliary_device_id *
-ice_ptp_auxbus_create_id_table(struct ice_pf *pf, const char *name)
-{
-	struct auxiliary_device_id *ids;
-
-	/* Second id left empty to terminate the array */
-	ids = devm_kcalloc(ice_pf_to_dev(pf), 2,
-			   sizeof(struct auxiliary_device_id), GFP_KERNEL);
-	if (!ids)
-		return NULL;
-
-	snprintf(ids[0].name, sizeof(ids[0].name), "ice.%s", name);
-
-	return ids;
-}
-
-/**
- * ice_ptp_register_auxbus_driver - Register PTP auxiliary bus driver
- * @pf: Board private structure
- */
-static int __always_unused ice_ptp_register_auxbus_driver(struct ice_pf *pf)
-{
-	struct auxiliary_driver *aux_driver;
-	struct ice_ptp *ptp;
-	struct device *dev;
-	char *name;
-	int err;
-
-	ptp = &pf->ptp;
-	dev = ice_pf_to_dev(pf);
-	aux_driver = &ptp->ports_owner.aux_driver;
-	INIT_LIST_HEAD(&ptp->ports_owner.ports);
-	mutex_init(&ptp->ports_owner.lock);
-	name = devm_kasprintf(dev, GFP_KERNEL, "ptp_aux_dev_%u_%u_clk%u",
-			      pf->pdev->bus->number, PCI_SLOT(pf->pdev->devfn),
-			      ice_get_ptp_src_clock_index(&pf->hw));
-	if (!name)
-		return -ENOMEM;
-
-	aux_driver->name = name;
-	aux_driver->shutdown = ice_ptp_auxbus_shutdown;
-	aux_driver->suspend = ice_ptp_auxbus_suspend;
-	aux_driver->remove = ice_ptp_auxbus_remove;
-	aux_driver->resume = ice_ptp_auxbus_resume;
-	aux_driver->probe = ice_ptp_auxbus_probe;
-	aux_driver->id_table = ice_ptp_auxbus_create_id_table(pf, name);
-	if (!aux_driver->id_table)
-		return -ENOMEM;
-
-	err = auxiliary_driver_register(aux_driver);
-	if (err) {
-		devm_kfree(dev, aux_driver->id_table);
-		dev_err(dev, "Failed registering aux_driver, name <%s>\n",
-			name);
-	}
-
-	return err;
-}
-
-/**
- * ice_ptp_unregister_auxbus_driver - Unregister PTP auxiliary bus driver
- * @pf: Board private structure
- */
-static void __always_unused ice_ptp_unregister_auxbus_driver(struct ice_pf *pf)
-{
-	struct auxiliary_driver *aux_driver = &pf->ptp.ports_owner.aux_driver;
-
-	auxiliary_driver_unregister(aux_driver);
-	devm_kfree(ice_pf_to_dev(pf), aux_driver->id_table);
-
-	mutex_destroy(&pf->ptp.ports_owner.lock);
-}
 
 /**
  * ice_ptp_clock_index - Get the PTP clock index for this device
@@ -3270,76 +3088,6 @@ static int ice_ptp_init_port(struct ice_pf *pf, struct ice_ptp_port *ptp_port)
 	}
 }
 
-/**
- * ice_ptp_release_auxbus_device
- * @dev: device that utilizes the auxbus
- */
-static void ice_ptp_release_auxbus_device(struct device *dev)
-{
-	/* Doing nothing here, but handle to auxbux device must be satisfied */
-}
-
-/**
- * ice_ptp_create_auxbus_device - Create PTP auxiliary bus device
- * @pf: Board private structure
- */
-static __always_unused int ice_ptp_create_auxbus_device(struct ice_pf *pf)
-{
-	struct auxiliary_device *aux_dev;
-	struct ice_ptp *ptp;
-	struct device *dev;
-	char *name;
-	int err;
-	u32 id;
-
-	ptp = &pf->ptp;
-	id = ptp->port.port_num;
-	dev = ice_pf_to_dev(pf);
-
-	aux_dev = &ptp->port.aux_dev;
-
-	name = devm_kasprintf(dev, GFP_KERNEL, "ptp_aux_dev_%u_%u_clk%u",
-			      pf->pdev->bus->number, PCI_SLOT(pf->pdev->devfn),
-			      ice_get_ptp_src_clock_index(&pf->hw));
-	if (!name)
-		return -ENOMEM;
-
-	aux_dev->name = name;
-	aux_dev->id = id;
-	aux_dev->dev.release = ice_ptp_release_auxbus_device;
-	aux_dev->dev.parent = dev;
-
-	err = auxiliary_device_init(aux_dev);
-	if (err)
-		goto aux_err;
-
-	err = auxiliary_device_add(aux_dev);
-	if (err) {
-		auxiliary_device_uninit(aux_dev);
-		goto aux_err;
-	}
-
-	return 0;
-aux_err:
-	dev_err(dev, "Failed to create PTP auxiliary bus device <%s>\n", name);
-	devm_kfree(dev, name);
-	return err;
-}
-
-/**
- * ice_ptp_remove_auxbus_device - Remove PTP auxiliary bus device
- * @pf: Board private structure
- */
-static __always_unused void ice_ptp_remove_auxbus_device(struct ice_pf *pf)
-{
-	struct auxiliary_device *aux_dev = &pf->ptp.port.aux_dev;
-
-	auxiliary_device_delete(aux_dev);
-	auxiliary_device_uninit(aux_dev);
-
-	memset(aux_dev, 0, sizeof(*aux_dev));
-}
-
 /**
  * ice_ptp_init_tx_interrupt_mode - Initialize device Tx interrupt mode
  * @pf: Board private structure
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h
index de73762e6f27..71c09acb5558 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.h
@@ -169,10 +169,8 @@ struct ice_ptp_tx {
  * ready for PTP functionality. It is used to track the port initialization
  * and determine when the port's PHY offset is valid.
  *
- * @list_member: list member structure of auxiliary device
  * @list_node: list member structure
  * @tx: Tx timestamp tracking for this port
- * @aux_dev: auxiliary device associated with this port
  * @ov_work: delayed work task for tracking when PHY offset is valid
  * @ps_lock: mutex used to protect the overall PTP PHY start procedure
  * @link_up: indicates whether the link is up
@@ -180,10 +178,8 @@ struct ice_ptp_tx {
  * @port_num: the port number this structure represents
  */
 struct ice_ptp_port {
-	struct list_head list_member;
 	struct list_head list_node;
 	struct ice_ptp_tx tx;
-	struct auxiliary_device aux_dev;
 	struct kthread_delayed_work ov_work;
 	struct mutex ps_lock; /* protects overall PTP PHY start procedure */
 	bool link_up;
@@ -197,23 +193,6 @@ enum ice_ptp_tx_interrupt {
 	ICE_PTP_TX_INTERRUPT_ALL,
 };
 
-/**
- * struct ice_ptp_port_owner - data used to handle the PTP clock owner info
- *
- * This structure contains data necessary for the PTP clock owner to correctly
- * handle the timestamping feature for all attached ports.
- *
- * @aux_driver: the structure carring the auxiliary driver information
- * @ports: list of porst handled by this port owner
- * @lock: protect access to ports list
- */
-
-struct ice_ptp_port_owner {
-	struct auxiliary_driver aux_driver;
-	struct list_head ports;
-	struct mutex lock;
-};
-
 #define GLTSYN_TGT_H_IDX_MAX		4
 
 enum ice_ptp_state {
@@ -229,7 +208,6 @@ enum ice_ptp_state {
  * @state: current state of PTP state machine
  * @tx_interrupt_mode: the TX interrupt mode for the PTP clock
  * @port: data for the PHY port initialization procedure
- * @ports_owner: data for the auxiliary driver owner
  * @work: delayed work function for periodic tasks
  * @cached_phc_time: a cached copy of the PHC time for timestamp extension
  * @cached_phc_jiffies: jiffies when cached_phc_time was last updated
@@ -253,7 +231,6 @@ struct ice_ptp {
 	enum ice_ptp_state state;
 	enum ice_ptp_tx_interrupt tx_interrupt_mode;
 	struct ice_ptp_port port;
-	struct ice_ptp_port_owner ports_owner;
 	struct kthread_delayed_work work;
 	u64 cached_phc_time;
 	unsigned long cached_phc_jiffies;
-- 
2.43.0

Re: [PATCH iwl-next v2 4/4] ice: Drop auxbus use for PTP to finalize ice_adapter move

[Simon Horman]

On Wed, Jun 26, 2024 at 02:54:56PM +0200, Sergey Temerkhanov wrote:
> Drop unused auxbus/auxdev support from the PTP code due to
> move to the ice_adapter.
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_ptp.c | 252 -----------------------
>  drivers/net/ethernet/intel/ice/ice_ptp.h |  23 ---

Nice diffstat :)

Reviewed-by: Simon Horman <horms@kernel.org>