* This function will configure timestamping during PTP initialization
* and deinitialization
*/
-static void ice_ptp_cfg_timestamp(struct ice_pf *pf, bool ena)
+void ice_ptp_cfg_timestamp(struct ice_pf *pf, bool ena)
{
ice_set_tx_tstamp(pf, ena);
ice_set_rx_tstamp(pf, ena);
msecs_to_jiffies(500));
}
+/**
+ * ice_ptp_reset - Initialize PTP hardware clock support after reset
+ * @pf: Board private structure
+ */
+void ice_ptp_reset(struct ice_pf *pf)
+{
+ struct ice_ptp *ptp = &pf->ptp;
+ struct ice_hw *hw = &pf->hw;
+ struct timespec64 ts;
+ u64 time_diff;
+ int err = 1;
+ u8 src_idx;
+
+ if (test_bit(ICE_PFR_REQ, pf->state))
+ goto pfr;
+
+ src_idx = hw->func_caps.ts_func_info.tmr_index_owned;
+
+ wr32(hw, GLTSYN_SYNC_DLAY, 0);
+
+ /* Enable source clocks */
+ wr32(hw, GLTSYN_ENA(src_idx), GLTSYN_ENA_TSYN_ENA_M);
+
+ /* Enable PHY time sync */
+ err = ice_ptp_init_phy_e810(hw);
+ if (err)
+ goto err;
+
+ /* Clear event status indications for auxiliary pins */
+ (void)rd32(hw, GLTSYN_STAT(src_idx));
+
+ /* Acquire the global hardware lock */
+ if (!ice_ptp_lock(hw)) {
+ err = -EBUSY;
+ goto err;
+ }
+
+ /* Write the increment time value to PHY and LAN */
+ err = ice_ptp_write_incval(hw, ICE_PTP_NOMINAL_INCVAL_E810);
+ if (err) {
+ ice_ptp_unlock(hw);
+ goto err;
+ }
+
+ /* Write the initial Time value to PHY and LAN using the cached PHC
+ * time before the reset and time difference between stopping and
+ * starting the clock.
+ */
+ if (ptp->cached_phc_time) {
+ time_diff = ktime_get_real_ns() - ptp->reset_time;
+ ts = ns_to_timespec64(ptp->cached_phc_time + time_diff);
+ } else {
+ ts = ktime_to_timespec64(ktime_get_real());
+ }
+ err = ice_ptp_write_init(pf, &ts);
+ if (err) {
+ ice_ptp_unlock(hw);
+ goto err;
+ }
+
+ /* Release the global hardware lock */
+ ice_ptp_unlock(hw);
+
+pfr:
+ /* Init Tx structures */
+ if (ice_is_e810(&pf->hw))
+ err = ice_ptp_init_tx_e810(pf, &ptp->port.tx);
+ if (err)
+ goto err;
+
+ set_bit(ICE_FLAG_PTP, pf->flags);
+
+ /* Start periodic work going */
+ kthread_queue_delayed_work(ptp->kworker, &ptp->work, 0);
+
+ dev_info(ice_pf_to_dev(pf), "PTP reset successful\n");
+ return;
+
+err:
+ dev_err(ice_pf_to_dev(pf), "PTP reset failed %d\n", err);
+}
+
+/**
+ * ice_ptp_prepare_for_reset - Prepare PTP for reset
+ * @pf: Board private structure
+ */
+void ice_ptp_prepare_for_reset(struct ice_pf *pf)
+{
+ struct ice_ptp *ptp = &pf->ptp;
+ u8 src_tmr;
+
+ clear_bit(ICE_FLAG_PTP, pf->flags);
+
+ /* Disable timestamping for both Tx and Rx */
+ ice_ptp_cfg_timestamp(pf, false);
+
+ kthread_cancel_delayed_work_sync(&ptp->work);
+ kthread_cancel_work_sync(&ptp->extts_work);
+
+ if (test_bit(ICE_PFR_REQ, pf->state))
+ return;
+
+ ice_ptp_release_tx_tracker(pf, &pf->ptp.port.tx);
+
+ /* Disable periodic outputs */
+ ice_ptp_disable_all_clkout(pf);
+
+ src_tmr = ice_get_ptp_src_clock_index(&pf->hw);
+
+ /* Disable source clock */
+ wr32(&pf->hw, GLTSYN_ENA(src_tmr), (u32)~GLTSYN_ENA_TSYN_ENA_M);
+
+ /* Acquire PHC and system timer to restore after reset */
+ ptp->reset_time = ktime_get_real_ns();
+}
+
/**
* ice_ptp_init_owner - Initialize PTP_1588_CLOCK device
* @pf: Board private structure
*/
static int ice_ptp_init_owner(struct ice_pf *pf)
{
- struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
struct timespec64 ts;
u8 src_idx;
err_clk:
pf->ptp.clock = NULL;
err_exit:
- dev_err(dev, "PTP failed to register clock, err %d\n", err);
-
return err;
}
+/**
+ * ice_ptp_init_work - Initialize PTP work threads
+ * @pf: Board private structure
+ * @ptp: PF PTP structure
+ */
+static int ice_ptp_init_work(struct ice_pf *pf, struct ice_ptp *ptp)
+{
+ struct kthread_worker *kworker;
+
+ /* Initialize work functions */
+ kthread_init_delayed_work(&ptp->work, ice_ptp_periodic_work);
+ kthread_init_work(&ptp->extts_work, ice_ptp_extts_work);
+
+ /* Allocate a kworker for handling work required for the ports
+ * connected to the PTP hardware clock.
+ */
+ kworker = kthread_create_worker(0, "ice-ptp-%s",
+ dev_name(ice_pf_to_dev(pf)));
+ if (IS_ERR(kworker))
+ return PTR_ERR(kworker);
+
+ ptp->kworker = kworker;
+
+ /* Start periodic work going */
+ kthread_queue_delayed_work(ptp->kworker, &ptp->work, 0);
+
+ return 0;
+}
+
/**
* ice_ptp_init - Initialize the PTP support after device probe or reset
* @pf: Board private structure
*/
void ice_ptp_init(struct ice_pf *pf)
{
- struct device *dev = ice_pf_to_dev(pf);
- struct kthread_worker *kworker;
+ struct ice_ptp *ptp = &pf->ptp;
struct ice_hw *hw = &pf->hw;
int err;
if (hw->func_caps.ts_func_info.src_tmr_owned) {
err = ice_ptp_init_owner(pf);
if (err)
- return;
+ goto err;
}
- /* Disable timestamping for both Tx and Rx */
- ice_ptp_cfg_timestamp(pf, false);
-
- /* Initialize the PTP port Tx timestamp tracker */
- ice_ptp_init_tx_e810(pf, &pf->ptp.port.tx);
-
- /* Initialize work functions */
- kthread_init_delayed_work(&pf->ptp.work, ice_ptp_periodic_work);
- kthread_init_work(&pf->ptp.extts_work, ice_ptp_extts_work);
-
- /* Allocate a kworker for handling work required for the ports
- * connected to the PTP hardware clock.
- */
- kworker = kthread_create_worker(0, "ice-ptp-%s", dev_name(dev));
- if (IS_ERR(kworker)) {
- err = PTR_ERR(kworker);
- goto err_kworker;
- }
- pf->ptp.kworker = kworker;
+ err = ice_ptp_init_tx_e810(pf, &pf->ptp.port.tx);
+ if (err)
+ goto err;
set_bit(ICE_FLAG_PTP, pf->flags);
+ err = ice_ptp_init_work(pf, ptp);
+ if (err)
+ goto err;
- /* Start periodic work going */
- kthread_queue_delayed_work(pf->ptp.kworker, &pf->ptp.work, 0);
-
- dev_info(dev, "PTP init successful\n");
+ dev_info(ice_pf_to_dev(pf), "PTP init successful\n");
return;
-err_kworker:
+err:
/* If we registered a PTP clock, release it */
if (pf->ptp.clock) {
- ptp_clock_unregister(pf->ptp.clock);
+ ptp_clock_unregister(ptp->clock);
pf->ptp.clock = NULL;
}
- dev_err(dev, "PTP failed %d\n", err);
+ clear_bit(ICE_FLAG_PTP, pf->flags);
+ dev_err(ice_pf_to_dev(pf), "PTP failed %d\n", err);
}
/**
* @info: structure defining PTP hardware capabilities
* @clock: pointer to registered PTP clock device
* @tstamp_config: hardware timestamping configuration
+ * @reset_time: kernel time after clock stop on reset
*/
struct ice_ptp {
struct ice_ptp_port port;
struct ptp_clock_info info;
struct ptp_clock *clock;
struct hwtstamp_config tstamp_config;
+ u64 reset_time;
};
#define __ptp_port_to_ptp(p) \
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);
s8 ice_ptp_request_ts(struct ice_ptp_tx *tx, struct sk_buff *skb);
void
ice_ptp_rx_hwtstamp(struct ice_rx_ring *rx_ring,
union ice_32b_rx_flex_desc *rx_desc, struct sk_buff *skb);
+void ice_ptp_reset(struct ice_pf *pf);
+void ice_ptp_prepare_for_reset(struct ice_pf *pf);
void ice_ptp_init(struct ice_pf *pf);
void ice_ptp_release(struct ice_pf *pf);
#else /* IS_ENABLED(CONFIG_PTP_1588_CLOCK) */
return -EOPNOTSUPP;
}
+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_rx_hwtstamp(struct ice_rx_ring *rx_ring,
union ice_32b_rx_flex_desc *rx_desc, struct sk_buff *skb) { }
+static inline void ice_ptp_reset(struct ice_pf *pf) { }
+static inline void ice_ptp_prepare_for_reset(struct ice_pf *pf) { }
static inline void ice_ptp_init(struct ice_pf *pf) { }
static inline void ice_ptp_release(struct ice_pf *pf) { }
#endif /* IS_ENABLED(CONFIG_PTP_1588_CLOCK) */
projects / linux.git / commitdiff