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Message-ID: <20240125215757.2601799-7-anthony.l.nguyen@intel.com>
Date: Thu, 25 Jan 2024 13:57:54 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
netdev@...r.kernel.org
Cc: Jacob Keller <jacob.e.keller@...el.com>,
anthony.l.nguyen@...el.com,
richardcochran@...il.com,
Karol Kolacinski <karol.kolacinski@...el.com>,
Simon Horman <horms@...nel.org>,
Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net-next 6/7] ice: factor out ice_ptp_rebuild_owner()
From: Jacob Keller <jacob.e.keller@...el.com>
The ice_ptp_reset() function uses a goto to skip past clock owner
operations if performing a PF reset or if the device is not the clock
owner. This is a bit confusing. Factor this out into
ice_ptp_rebuild_owner() instead.
The ice_ptp_reset() function is called by ice_rebuild() to restore PTP
functionality after a device reset. Follow the convention set by the
ice_main.c file and rename this function to ice_ptp_rebuild(), in the
same way that we have ice_prepare_for_reset() and
ice_ptp_prepare_for_reset().
Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@...el.com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
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_main.c | 2 +-
drivers/net/ethernet/intel/ice/ice_ptp.c | 62 ++++++++++++++---------
drivers/net/ethernet/intel/ice/ice_ptp.h | 6 +--
3 files changed, 42 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 0c589524cf43..2b7960824bc3 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -7548,7 +7548,7 @@ static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
* fail.
*/
if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
- ice_ptp_reset(pf, reset_type);
+ ice_ptp_rebuild(pf, reset_type);
if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_init(pf);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 6f2a1ad5c2a3..5ede4f61c054 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -2665,11 +2665,13 @@ void ice_ptp_prepare_for_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
}
/**
- * ice_ptp_reset - Initialize PTP hardware clock support after reset
+ * ice_ptp_rebuild_owner - Initialize PTP clock owner after reset
* @pf: Board private structure
- * @reset_type: the reset type being performed
+ *
+ * Companion function for ice_ptp_rebuild() which handles tasks that only the
+ * PTP clock owner instance should perform.
*/
-void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
+static int ice_ptp_rebuild_owner(struct ice_pf *pf)
{
struct ice_ptp *ptp = &pf->ptp;
struct ice_hw *hw = &pf->hw;
@@ -2677,32 +2679,21 @@ void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
u64 time_diff;
int err;
- if (ptp->state == ICE_PTP_READY) {
- ice_ptp_prepare_for_reset(pf, reset_type);
- } else if (ptp->state != ICE_PTP_RESETTING) {
- err = -EINVAL;
- dev_err(ice_pf_to_dev(pf), "PTP was not initialized\n");
- goto err;
- }
-
- if (reset_type == ICE_RESET_PFR || !ice_pf_src_tmr_owned(pf))
- goto pfr;
-
err = ice_ptp_init_phc(hw);
if (err)
- goto err;
+ return err;
/* Acquire the global hardware lock */
if (!ice_ptp_lock(hw)) {
err = -EBUSY;
- goto err;
+ return err;
}
/* Write the increment time value to PHY and LAN */
err = ice_ptp_write_incval(hw, ice_base_incval(pf));
if (err) {
ice_ptp_unlock(hw);
- goto err;
+ return err;
}
/* Write the initial Time value to PHY and LAN using the cached PHC
@@ -2718,7 +2709,7 @@ void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
err = ice_ptp_write_init(pf, &ts);
if (err) {
ice_ptp_unlock(hw);
- goto err;
+ return err;
}
/* Release the global hardware lock */
@@ -2727,11 +2718,39 @@ void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
if (!ice_is_e810(hw)) {
/* Enable quad interrupts */
err = ice_ptp_cfg_phy_interrupt(pf, true, 1);
+ if (err)
+ return err;
+
+ ice_ptp_restart_all_phy(pf);
+ }
+
+ return 0;
+}
+
+/**
+ * ice_ptp_rebuild - Initialize PTP hardware clock support after reset
+ * @pf: Board private structure
+ * @reset_type: the reset type being performed
+ */
+void ice_ptp_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
+{
+ struct ice_ptp *ptp = &pf->ptp;
+ int err;
+
+ if (ptp->state == ICE_PTP_READY) {
+ ice_ptp_prepare_for_reset(pf, reset_type);
+ } else if (ptp->state != ICE_PTP_RESETTING) {
+ err = -EINVAL;
+ dev_err(ice_pf_to_dev(pf), "PTP was not initialized\n");
+ goto err;
+ }
+
+ if (ice_pf_src_tmr_owned(pf) && reset_type != ICE_RESET_PFR) {
+ err = ice_ptp_rebuild_owner(pf);
if (err)
goto err;
}
-pfr:
/* Init Tx structures */
if (ice_is_e810(&pf->hw)) {
err = ice_ptp_init_tx_e810(pf, &ptp->port.tx);
@@ -2746,11 +2765,6 @@ void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
ptp->state = ICE_PTP_READY;
- /* Restart the PHY timestamping block */
- if (!test_bit(ICE_PFR_REQ, pf->state) &&
- ice_pf_src_tmr_owned(pf))
- ice_ptp_restart_all_phy(pf);
-
/* Start periodic work going */
kthread_queue_delayed_work(ptp->kworker, &ptp->work, 0);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h
index aa7a5588d11d..3af20025043a 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.h
@@ -316,7 +316,7 @@ enum ice_tx_tstamp_work ice_ptp_process_ts(struct ice_pf *pf);
u64 ice_ptp_get_rx_hwts(const union ice_32b_rx_flex_desc *rx_desc,
const struct ice_pkt_ctx *pkt_ctx);
-void ice_ptp_reset(struct ice_pf *pf, enum ice_reset_req reset_type);
+void ice_ptp_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);
void ice_ptp_prepare_for_reset(struct ice_pf *pf,
enum ice_reset_req reset_type);
void ice_ptp_init(struct ice_pf *pf);
@@ -358,8 +358,8 @@ ice_ptp_get_rx_hwts(const union ice_32b_rx_flex_desc *rx_desc,
return 0;
}
-static inline void ice_ptp_reset(struct ice_pf *pf,
- enum ice_reset_req reset_type)
+static inline void ice_ptp_rebuild(struct ice_pf *pf,
+ enum ice_reset_req reset_type)
{
}
--
2.41.0
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