diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c | 111 |
1 files changed, 85 insertions, 26 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c index 61c20907315f..896b2f9bac34 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c @@ -10,6 +10,33 @@ #include "otx2_common.h" #include "otx2_ptp.h" +static u64 otx2_ptp_get_clock(struct otx2_ptp *ptp) +{ + struct ptp_req *req; + struct ptp_rsp *rsp; + int err; + + if (!ptp->nic) + return 0; + + req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox); + if (!req) + return 0; + + req->op = PTP_OP_GET_CLOCK; + + err = otx2_sync_mbox_msg(&ptp->nic->mbox); + if (err) + return 0; + + rsp = (struct ptp_rsp *)otx2_mbox_get_rsp(&ptp->nic->mbox.mbox, 0, + &req->hdr); + if (IS_ERR(rsp)) + return 0; + + return rsp->clk; +} + static int otx2_ptp_adjfine(struct ptp_clock_info *ptp_info, long scaled_ppm) { struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp, @@ -46,32 +73,28 @@ static int ptp_set_thresh(struct otx2_ptp *ptp, u64 thresh) return otx2_sync_mbox_msg(&ptp->nic->mbox); } -static u64 ptp_cc_read(const struct cyclecounter *cc) +static int ptp_extts_on(struct otx2_ptp *ptp, int on) { - struct otx2_ptp *ptp = container_of(cc, struct otx2_ptp, cycle_counter); struct ptp_req *req; - struct ptp_rsp *rsp; - int err; if (!ptp->nic) - return 0; + return -ENODEV; req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox); if (!req) - return 0; + return -ENOMEM; - req->op = PTP_OP_GET_CLOCK; + req->op = PTP_OP_EXTTS_ON; + req->extts_on = on; - err = otx2_sync_mbox_msg(&ptp->nic->mbox); - if (err) - return 0; + return otx2_sync_mbox_msg(&ptp->nic->mbox); +} - rsp = (struct ptp_rsp *)otx2_mbox_get_rsp(&ptp->nic->mbox.mbox, 0, - &req->hdr); - if (IS_ERR(rsp)) - return 0; +static u64 ptp_cc_read(const struct cyclecounter *cc) +{ + struct otx2_ptp *ptp = container_of(cc, struct otx2_ptp, cycle_counter); - return rsp->clk; + return otx2_ptp_get_clock(ptp); } static u64 ptp_tstmp_read(struct otx2_ptp *ptp) @@ -101,6 +124,15 @@ static u64 ptp_tstmp_read(struct otx2_ptp *ptp) return rsp->clk; } +static void otx2_get_ptpclock(struct otx2_ptp *ptp, u64 *tstamp) +{ + struct otx2_nic *pfvf = ptp->nic; + + mutex_lock(&pfvf->mbox.lock); + *tstamp = timecounter_read(&ptp->time_counter); + mutex_unlock(&pfvf->mbox.lock); +} + static int otx2_ptp_adjtime(struct ptp_clock_info *ptp_info, s64 delta) { struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp, @@ -119,14 +151,10 @@ static int otx2_ptp_gettime(struct ptp_clock_info *ptp_info, { struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp, ptp_info); - struct otx2_nic *pfvf = ptp->nic; - u64 nsec; + u64 tstamp; - mutex_lock(&pfvf->mbox.lock); - nsec = timecounter_read(&ptp->time_counter); - mutex_unlock(&pfvf->mbox.lock); - - *ts = ns_to_timespec64(nsec); + otx2_get_ptpclock(ptp, &tstamp); + *ts = ns_to_timespec64(tstamp); return 0; } @@ -178,8 +206,6 @@ static void otx2_ptp_extts_check(struct work_struct *work) event.index = 0; event.timestamp = timecounter_cyc2time(&ptp->time_counter, tstmp); ptp_clock_event(ptp->ptp_clock, &event); - ptp->last_extts = tstmp; - new_thresh = tstmp % 500000000; if (ptp->thresh != new_thresh) { mutex_lock(&ptp->nic->mbox.lock); @@ -187,10 +213,28 @@ static void otx2_ptp_extts_check(struct work_struct *work) mutex_unlock(&ptp->nic->mbox.lock); ptp->thresh = new_thresh; } + ptp->last_extts = tstmp; } schedule_delayed_work(&ptp->extts_work, msecs_to_jiffies(200)); } +static void otx2_sync_tstamp(struct work_struct *work) +{ + struct otx2_ptp *ptp = container_of(work, struct otx2_ptp, + synctstamp_work.work); + struct otx2_nic *pfvf = ptp->nic; + u64 tstamp; + + mutex_lock(&pfvf->mbox.lock); + tstamp = otx2_ptp_get_clock(ptp); + mutex_unlock(&pfvf->mbox.lock); + + ptp->tstamp = timecounter_cyc2time(&pfvf->ptp->time_counter, tstamp); + ptp->base_ns = tstamp % NSEC_PER_SEC; + + schedule_delayed_work(&ptp->synctstamp_work, msecs_to_jiffies(250)); +} + static int otx2_ptp_enable(struct ptp_clock_info *ptp_info, struct ptp_clock_request *rq, int on) { @@ -207,10 +251,13 @@ static int otx2_ptp_enable(struct ptp_clock_info *ptp_info, rq->extts.index); if (pin < 0) return -EBUSY; - if (on) + if (on) { + ptp_extts_on(ptp, on); schedule_delayed_work(&ptp->extts_work, msecs_to_jiffies(200)); - else + } else { + ptp_extts_on(ptp, on); cancel_delayed_work_sync(&ptp->extts_work); + } return 0; default: break; @@ -294,6 +341,16 @@ int otx2_ptp_init(struct otx2_nic *pfvf) goto error; } + if (is_dev_otx2(pfvf->pdev)) { + ptp_ptr->convert_rx_ptp_tstmp = &otx2_ptp_convert_rx_timestamp; + ptp_ptr->convert_tx_ptp_tstmp = &otx2_ptp_convert_tx_timestamp; + } else { + ptp_ptr->convert_rx_ptp_tstmp = &cn10k_ptp_convert_timestamp; + ptp_ptr->convert_tx_ptp_tstmp = &cn10k_ptp_convert_timestamp; + } + + INIT_DELAYED_WORK(&ptp_ptr->synctstamp_work, otx2_sync_tstamp); + pfvf->ptp = ptp_ptr; error: @@ -308,6 +365,8 @@ void otx2_ptp_destroy(struct otx2_nic *pfvf) if (!ptp) return; + cancel_delayed_work(&pfvf->ptp->synctstamp_work); + ptp_clock_unregister(ptp->ptp_clock); kfree(ptp); pfvf->ptp = NULL; |