From d0cf9503e908ee7b235a5efecedeb74aabc482f3 Mon Sep 17 00:00:00 2001 From: Christina Jacob Date: Tue, 9 Feb 2021 16:05:27 +0530 Subject: [PATCH] octeontx2-pf: ethtool fec mode support Add ethtool support to configure fec modes baser/rs and support to fecth FEC stats from CGX as well PHY. Configure fec mode - ethtool --set-fec eth0 encoding rs/baser/off/auto Query fec mode - ethtool --show-fec eth0 Signed-off-by: Christina Jacob Signed-off-by: Sunil Goutham Signed-off-by: Hariprasad Kelam Reviewed-by: Jesse Brandeburg Signed-off-by: David S. Miller --- .../ethernet/marvell/octeontx2/nic/otx2_common.c | 20 +++ .../ethernet/marvell/octeontx2/nic/otx2_common.h | 6 + .../ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 160 ++++++++++++++++++++- .../net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 3 + 4 files changed, 188 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c index 70a91d8be074..adcd7a9489f1 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c @@ -60,6 +60,19 @@ void otx2_update_lmac_stats(struct otx2_nic *pfvf) mutex_unlock(&pfvf->mbox.lock); } +void otx2_update_lmac_fec_stats(struct otx2_nic *pfvf) +{ + struct msg_req *req; + + if (!netif_running(pfvf->netdev)) + return; + mutex_lock(&pfvf->mbox.lock); + req = otx2_mbox_alloc_msg_cgx_fec_stats(&pfvf->mbox); + if (req) + otx2_sync_mbox_msg(&pfvf->mbox); + mutex_unlock(&pfvf->mbox.lock); +} + int otx2_update_rq_stats(struct otx2_nic *pfvf, int qidx) { struct otx2_rcv_queue *rq = &pfvf->qset.rq[qidx]; @@ -1489,6 +1502,13 @@ void mbox_handler_cgx_stats(struct otx2_nic *pfvf, pfvf->hw.cgx_tx_stats[id] = rsp->tx_stats[id]; } +void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf, + struct cgx_fec_stats_rsp *rsp) +{ + pfvf->hw.cgx_fec_corr_blks += rsp->fec_corr_blks; + pfvf->hw.cgx_fec_uncorr_blks += rsp->fec_uncorr_blks; +} + void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf, struct nix_txsch_alloc_rsp *rsp) { diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h index 0404900338e3..f8e2b6b1bf5a 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h @@ -204,6 +204,8 @@ struct otx2_hw { struct otx2_drv_stats drv_stats; u64 cgx_rx_stats[CGX_RX_STATS_COUNT]; u64 cgx_tx_stats[CGX_TX_STATS_COUNT]; + u64 cgx_fec_corr_blks; + u64 cgx_fec_uncorr_blks; u8 cgx_links; /* No. of CGX links present in HW */ u8 lbk_links; /* No. of LBK links present in HW */ }; @@ -661,6 +663,9 @@ void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf, struct nix_txsch_alloc_rsp *rsp); void mbox_handler_cgx_stats(struct otx2_nic *pfvf, struct cgx_stats_rsp *rsp); +void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf, + struct cgx_fec_stats_rsp *rsp); +void otx2_set_fec_stats_count(struct otx2_nic *pfvf); void mbox_handler_nix_bp_enable(struct otx2_nic *pfvf, struct nix_bp_cfg_rsp *rsp); @@ -669,6 +674,7 @@ void otx2_get_dev_stats(struct otx2_nic *pfvf); void otx2_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats); void otx2_update_lmac_stats(struct otx2_nic *pfvf); +void otx2_update_lmac_fec_stats(struct otx2_nic *pfvf); int otx2_update_rq_stats(struct otx2_nic *pfvf, int qidx); int otx2_update_sq_stats(struct otx2_nic *pfvf, int qidx); void otx2_set_ethtool_ops(struct net_device *netdev); diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c index e0199f0e4a6c..93a4fe4e86bc 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c @@ -66,6 +66,8 @@ static const unsigned int otx2_n_dev_stats = ARRAY_SIZE(otx2_dev_stats); static const unsigned int otx2_n_drv_stats = ARRAY_SIZE(otx2_drv_stats); static const unsigned int otx2_n_queue_stats = ARRAY_SIZE(otx2_queue_stats); +static struct cgx_fw_data *otx2_get_fwdata(struct otx2_nic *pfvf); + static void otx2_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) { @@ -128,6 +130,10 @@ static void otx2_get_strings(struct net_device *netdev, u32 sset, u8 *data) strcpy(data, "reset_count"); data += ETH_GSTRING_LEN; + sprintf(data, "Fec Corrected Errors: "); + data += ETH_GSTRING_LEN; + sprintf(data, "Fec Uncorrected Errors: "); + data += ETH_GSTRING_LEN; } static void otx2_get_qset_stats(struct otx2_nic *pfvf, @@ -160,11 +166,30 @@ static void otx2_get_qset_stats(struct otx2_nic *pfvf, } } +static int otx2_get_phy_fec_stats(struct otx2_nic *pfvf) +{ + struct msg_req *req; + int rc = -ENOMEM; + + mutex_lock(&pfvf->mbox.lock); + req = otx2_mbox_alloc_msg_cgx_get_phy_fec_stats(&pfvf->mbox); + if (!req) + goto end; + + if (!otx2_sync_mbox_msg(&pfvf->mbox)) + rc = 0; +end: + mutex_unlock(&pfvf->mbox.lock); + return rc; +} + /* Get device and per queue statistics */ static void otx2_get_ethtool_stats(struct net_device *netdev, struct ethtool_stats *stats, u64 *data) { struct otx2_nic *pfvf = netdev_priv(netdev); + u64 fec_corr_blks, fec_uncorr_blks; + struct cgx_fw_data *rsp; int stat; otx2_get_dev_stats(pfvf); @@ -183,6 +208,32 @@ static void otx2_get_ethtool_stats(struct net_device *netdev, for (stat = 0; stat < CGX_TX_STATS_COUNT; stat++) *(data++) = pfvf->hw.cgx_tx_stats[stat]; *(data++) = pfvf->reset_count; + + fec_corr_blks = pfvf->hw.cgx_fec_corr_blks; + fec_uncorr_blks = pfvf->hw.cgx_fec_uncorr_blks; + + rsp = otx2_get_fwdata(pfvf); + if (!IS_ERR(rsp) && rsp->fwdata.phy.misc.has_fec_stats && + !otx2_get_phy_fec_stats(pfvf)) { + /* Fetch fwdata again because it's been recently populated with + * latest PHY FEC stats. + */ + rsp = otx2_get_fwdata(pfvf); + if (!IS_ERR(rsp)) { + struct fec_stats_s *p = &rsp->fwdata.phy.fec_stats; + + if (pfvf->linfo.fec == OTX2_FEC_BASER) { + fec_corr_blks = p->brfec_corr_blks; + fec_uncorr_blks = p->brfec_uncorr_blks; + } else { + fec_corr_blks = p->rsfec_corr_cws; + fec_uncorr_blks = p->rsfec_uncorr_cws; + } + } + } + + *(data++) = fec_corr_blks; + *(data++) = fec_uncorr_blks; } static int otx2_get_sset_count(struct net_device *netdev, int sset) @@ -195,9 +246,11 @@ static int otx2_get_sset_count(struct net_device *netdev, int sset) qstats_count = otx2_n_queue_stats * (pfvf->hw.rx_queues + pfvf->hw.tx_queues); + otx2_update_lmac_fec_stats(pfvf); return otx2_n_dev_stats + otx2_n_drv_stats + qstats_count + - CGX_RX_STATS_COUNT + CGX_TX_STATS_COUNT + 1; + CGX_RX_STATS_COUNT + CGX_TX_STATS_COUNT + OTX2_FEC_STATS_CNT + + 1; } /* Get no of queues device supports and current queue count */ @@ -859,6 +912,109 @@ static int otx2_get_ts_info(struct net_device *netdev, return 0; } +static struct cgx_fw_data *otx2_get_fwdata(struct otx2_nic *pfvf) +{ + struct cgx_fw_data *rsp = NULL; + struct msg_req *req; + int err = 0; + + mutex_lock(&pfvf->mbox.lock); + req = otx2_mbox_alloc_msg_cgx_get_aux_link_info(&pfvf->mbox); + if (!req) { + mutex_unlock(&pfvf->mbox.lock); + return ERR_PTR(-ENOMEM); + } + + err = otx2_sync_mbox_msg(&pfvf->mbox); + if (!err) { + rsp = (struct cgx_fw_data *) + otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); + } else { + rsp = ERR_PTR(err); + } + + mutex_unlock(&pfvf->mbox.lock); + return rsp; +} + +static int otx2_get_fecparam(struct net_device *netdev, + struct ethtool_fecparam *fecparam) +{ + struct otx2_nic *pfvf = netdev_priv(netdev); + struct cgx_fw_data *rsp; + const int fec[] = { + ETHTOOL_FEC_OFF, + ETHTOOL_FEC_BASER, + ETHTOOL_FEC_RS, + ETHTOOL_FEC_BASER | ETHTOOL_FEC_RS}; +#define FEC_MAX_INDEX 4 + if (pfvf->linfo.fec < FEC_MAX_INDEX) + fecparam->active_fec = fec[pfvf->linfo.fec]; + + rsp = otx2_get_fwdata(pfvf); + if (IS_ERR(rsp)) + return PTR_ERR(rsp); + + if (rsp->fwdata.supported_fec <= FEC_MAX_INDEX) { + if (!rsp->fwdata.supported_fec) + fecparam->fec = ETHTOOL_FEC_NONE; + else + fecparam->fec = fec[rsp->fwdata.supported_fec]; + } + return 0; +} + +static int otx2_set_fecparam(struct net_device *netdev, + struct ethtool_fecparam *fecparam) +{ + struct otx2_nic *pfvf = netdev_priv(netdev); + struct mbox *mbox = &pfvf->mbox; + struct fec_mode *req, *rsp; + int err = 0, fec = 0; + + switch (fecparam->fec) { + /* Firmware does not support AUTO mode consider it as FEC_OFF */ + case ETHTOOL_FEC_OFF: + case ETHTOOL_FEC_AUTO: + fec = OTX2_FEC_OFF; + break; + case ETHTOOL_FEC_RS: + fec = OTX2_FEC_RS; + break; + case ETHTOOL_FEC_BASER: + fec = OTX2_FEC_BASER; + break; + default: + netdev_warn(pfvf->netdev, "Unsupported FEC mode: %d", + fecparam->fec); + return -EINVAL; + } + + if (fec == pfvf->linfo.fec) + return 0; + + mutex_lock(&mbox->lock); + req = otx2_mbox_alloc_msg_cgx_set_fec_param(&pfvf->mbox); + if (!req) { + err = -ENOMEM; + goto end; + } + req->fec = fec; + err = otx2_sync_mbox_msg(&pfvf->mbox); + if (err) + goto end; + + rsp = (struct fec_mode *)otx2_mbox_get_rsp(&pfvf->mbox.mbox, + 0, &req->hdr); + if (rsp->fec >= 0) + pfvf->linfo.fec = rsp->fec; + else + err = rsp->fec; +end: + mutex_unlock(&mbox->lock); + return err; +} + static const struct ethtool_ops otx2_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_MAX_FRAMES, @@ -886,6 +1042,8 @@ static const struct ethtool_ops otx2_ethtool_ops = { .get_pauseparam = otx2_get_pauseparam, .set_pauseparam = otx2_set_pauseparam, .get_ts_info = otx2_get_ts_info, + .get_fecparam = otx2_get_fecparam, + .set_fecparam = otx2_set_fecparam, }; void otx2_set_ethtool_ops(struct net_device *netdev) diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 07ec85aebcca..d024dac705db 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -779,6 +779,9 @@ static void otx2_process_pfaf_mbox_msg(struct otx2_nic *pf, case MBOX_MSG_CGX_STATS: mbox_handler_cgx_stats(pf, (struct cgx_stats_rsp *)msg); break; + case MBOX_MSG_CGX_FEC_STATS: + mbox_handler_cgx_fec_stats(pf, (struct cgx_fec_stats_rsp *)msg); + break; default: if (msg->rc) dev_err(pf->dev, -- 2.11.0