[Intel-wired-lan] [PATCH net-next v1 3/3] ice: PTP: add clock domain number to auxiliary interface

[Michal Michalik <michal.michalik@intel.com>]

The PHC clock id used to be moved between PFs using FW admin queue
shared parameters - move the implementation to auxiliary bus.

Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Michal Michalik <michal.michalik@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_ethtool.c |   2 +-
 drivers/net/ethernet/intel/ice/ice_ptp.c     | 163 +++++----------------------
 drivers/net/ethernet/intel/ice/ice_ptp.h     |  11 +-
 3 files changed, 34 insertions(+), 142 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 8d5cbbd..aaa727c 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -3276,7 +3276,7 @@ ice_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
 				SOF_TIMESTAMPING_RX_HARDWARE |
 				SOF_TIMESTAMPING_RAW_HARDWARE;
 
-	info->phc_index = ice_get_ptp_clock_index(pf);
+	info->phc_index = ice_ptp_clock_index(pf);
 
 	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 7fced6e..ebc6f87 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -340,131 +340,6 @@ void ice_ptp_cfg_timestamp(struct ice_pf *pf, bool ena)
 }
 
 /**
- * ice_get_ptp_clock_index - Get the PTP clock index
- * @pf: the PF pointer
- *
- * Determine the clock index of the PTP clock associated with this device. If
- * this is the PF controlling the clock, just use the local access to the
- * clock device pointer.
- *
- * Otherwise, read from the driver shared parameters to determine the clock
- * index value.
- *
- * Returns: the index of the PTP clock associated with this device, or -1 if
- * there is no associated clock.
- */
-int ice_get_ptp_clock_index(struct ice_pf *pf)
-{
-	struct device *dev = ice_pf_to_dev(pf);
-	enum ice_aqc_driver_params param_idx;
-	struct ice_hw *hw = &pf->hw;
-	u8 tmr_idx;
-	u32 value;
-	int err;
-
-	/* Use the ptp_clock structure if we're the main PF */
-	if (pf->ptp.clock)
-		return ptp_clock_index(pf->ptp.clock);
-
-	tmr_idx = hw->func_caps.ts_func_info.tmr_index_assoc;
-	if (!tmr_idx)
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR0;
-	else
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR1;
-
-	err = ice_aq_get_driver_param(hw, param_idx, &value, NULL);
-	if (err) {
-		dev_err(dev, "Failed to read PTP clock index parameter, err %d aq_err %s\n",
-			err, ice_aq_str(hw->adminq.sq_last_status));
-		return -1;
-	}
-
-	/* The PTP clock index is an integer, and will be between 0 and
-	 * INT_MAX. The highest bit of the driver shared parameter is used to
-	 * indicate whether or not the currently stored clock index is valid.
-	 */
-	if (!(value & PTP_SHARED_CLK_IDX_VALID))
-		return -1;
-
-	return value & ~PTP_SHARED_CLK_IDX_VALID;
-}
-
-/**
- * ice_set_ptp_clock_index - Set the PTP clock index
- * @pf: the PF pointer
- *
- * Set the PTP clock index for this device into the shared driver parameters,
- * so that other PFs associated with this device can read it.
- *
- * If the PF is unable to store the clock index, it will log an error, but
- * will continue operating PTP.
- */
-static void ice_set_ptp_clock_index(struct ice_pf *pf)
-{
-	struct device *dev = ice_pf_to_dev(pf);
-	enum ice_aqc_driver_params param_idx;
-	struct ice_hw *hw = &pf->hw;
-	u8 tmr_idx;
-	u32 value;
-	int err;
-
-	if (!pf->ptp.clock)
-		return;
-
-	tmr_idx = hw->func_caps.ts_func_info.tmr_index_assoc;
-	if (!tmr_idx)
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR0;
-	else
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR1;
-
-	value = (u32)ptp_clock_index(pf->ptp.clock);
-	if (value > INT_MAX) {
-		dev_err(dev, "PTP Clock index is too large to store\n");
-		return;
-	}
-	value |= PTP_SHARED_CLK_IDX_VALID;
-
-	err = ice_aq_set_driver_param(hw, param_idx, value, NULL);
-	if (err) {
-		dev_err(dev, "Failed to set PTP clock index parameter, err %d aq_err %s\n",
-			err, ice_aq_str(hw->adminq.sq_last_status));
-	}
-}
-
-/**
- * ice_clear_ptp_clock_index - Clear the PTP clock index
- * @pf: the PF pointer
- *
- * Clear the PTP clock index for this device. Must be called when
- * unregistering the PTP clock, in order to ensure other PFs stop reporting
- * a clock object that no longer exists.
- */
-static void ice_clear_ptp_clock_index(struct ice_pf *pf)
-{
-	struct device *dev = ice_pf_to_dev(pf);
-	enum ice_aqc_driver_params param_idx;
-	struct ice_hw *hw = &pf->hw;
-	u8 tmr_idx;
-	int err;
-
-	/* Do not clear the index if we don't own the timer */
-	if (!hw->func_caps.ts_func_info.src_tmr_owned)
-		return;
-
-	tmr_idx = hw->func_caps.ts_func_info.tmr_index_assoc;
-	if (!tmr_idx)
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR0;
-	else
-		param_idx = ICE_AQC_DRIVER_PARAM_CLK_IDX_TMR1;
-
-	err = ice_aq_set_driver_param(hw, param_idx, 0, NULL);
-	if (err) {
-		dev_dbg(dev, "Failed to clear PTP clock index parameter, err %d aq_err %s\n",
-			err, ice_aq_str(hw->adminq.sq_last_status));
-	}
-}
-
-/**
  * ice_ptp_read_src_clk_reg - Read the source clock register
  * @pf: Board private structure
  * @sts: Optional parameter for holding a pair of system timestamps from
@@ -2434,7 +2309,6 @@ static void ice_ptp_set_caps(struct ice_pf *pf)
 static long ice_ptp_create_clock(struct ice_pf *pf)
 {
 	struct ptp_clock_info *info;
-	struct ptp_clock *clock;
 	struct device *dev;
 
 	/* No need to create a clock device if we already have one */
@@ -2447,11 +2321,11 @@ static long ice_ptp_create_clock(struct ice_pf *pf)
 	dev = ice_pf_to_dev(pf);
 
 	/* Attempt to register the clock before enabling the hardware. */
-	clock = ptp_clock_register(info, dev);
-	if (IS_ERR(clock))
-		return PTR_ERR(clock);
-
-	pf->ptp.clock = clock;
+	pf->ptp.clock = ptp_clock_register(info, dev);
+	if (IS_ERR(pf->ptp.clock)) {
+		dev_err(ice_pf_to_dev(pf), "Failed to register PTP clock device");
+		return PTR_ERR(pf->ptp.clock);
+	}
 
 	return 0;
 }
@@ -2819,6 +2693,28 @@ static void ice_ptp_unregister_auxbus_driver(struct ice_pf *pf)
 }
 
 /**
+ * ice_ptp_clock_index - Get the PTP clock index for this device
+ * @pf: Board private structure
+ *
+ * Returns: the PTP clock index associated with this PF, or -1 if no PTP clock
+ * is associated.
+ */
+int ice_ptp_clock_index(struct ice_pf *pf)
+{
+	struct auxiliary_device *aux_dev;
+	struct ice_pf *owner_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)
+		return -1;
+	clock = owner_pf->ptp.clock;
+
+	return clock ? ptp_clock_index(clock) : -1;
+}
+
+/**
  * ice_ptp_prepare_for_reset - Prepare PTP for reset
  * @pf: Board private structure
  */
@@ -2916,9 +2812,6 @@ static int ice_ptp_init_owner(struct ice_pf *pf)
 	if (err)
 		goto err_clk;
 
-	/* Store the PTP clock index for other PFs */
-	ice_set_ptp_clock_index(pf);
-
 	err = ice_ptp_register_auxbus_driver(pf);
 	if (err) {
 		dev_err(ice_pf_to_dev(pf), "Failed to register PTP auxbus driver");
@@ -2927,7 +2820,6 @@ static int ice_ptp_init_owner(struct ice_pf *pf)
 
 	return 0;
 err_aux:
-	ice_clear_ptp_clock_index(pf);
 	ptp_clock_unregister(pf->ptp.clock);
 err_clk:
 	pf->ptp.clock = NULL;
@@ -3187,7 +3079,6 @@ void ice_ptp_release(struct ice_pf *pf)
 	/* Disable periodic outputs */
 	ice_ptp_disable_all_clkout(pf);
 
-	ice_clear_ptp_clock_index(pf);
 	ptp_clock_unregister(pf->ptp.clock);
 	pf->ptp.clock = NULL;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h
index d94c223..5e5b54a 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.h
@@ -287,12 +287,12 @@ struct ice_ptp {
 #define N_EXT_TS_NO_SMA_E810T		2
 #define ETH_GLTSYN_ENA(_i)		(0x03000348 + ((_i) * 4))
 
+int ice_ptp_clock_index(struct ice_pf *pf);
 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
 struct ice_pf;
 int ice_ptp_set_ts_config(struct ice_pf *pf, struct ifreq *ifr);
 int ice_ptp_get_ts_config(struct ice_pf *pf, struct ifreq *ifr);
 void ice_ptp_cfg_timestamp(struct ice_pf *pf, bool ena);
-int ice_get_ptp_clock_index(struct ice_pf *pf);
 
 void ice_ptp_extts_event(struct ice_pf *pf);
 s8 ice_ptp_request_ts(struct ice_ptp_tx *tx, struct sk_buff *skb);
@@ -318,10 +318,6 @@ static inline int ice_ptp_get_ts_config(struct ice_pf *pf, struct ifreq *ifr)
 }
 
 static inline void ice_ptp_cfg_timestamp(struct ice_pf *pf, bool ena) { }
-static inline int ice_get_ptp_clock_index(struct ice_pf *pf)
-{
-	return -1;
-}
 
 static inline void ice_ptp_extts_event(struct ice_pf *pf) { }
 static inline s8
@@ -344,5 +340,10 @@ static inline void ice_ptp_release(struct ice_pf *pf) { }
 static inline void ice_ptp_link_change(struct ice_pf *pf, u8 port, bool linkup)
 {
 }
+
+static inline int ice_ptp_clock_index(struct ice_pf *pf)
+{
+	return -1;
+}
 #endif /* IS_ENABLED(CONFIG_PTP_1588_CLOCK) */
 #endif /* _ICE_PTP_H_ */
-- 
2.9.5

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