diff options
Diffstat (limited to 'drivers/net/ethernet/ti/am65-cpsw-ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-ethtool.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-ethtool.c b/drivers/net/ethernet/ti/am65-cpsw-ethtool.c index c51e2af91f69..35fceba01ea4 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-ethtool.c +++ b/drivers/net/ethernet/ti/am65-cpsw-ethtool.c @@ -11,6 +11,7 @@ #include <linux/pm_runtime.h> #include "am65-cpsw-nuss.h" +#include "am65-cpsw-qos.h" #include "cpsw_ale.h" #include "am65-cpts.h" @@ -662,6 +663,34 @@ static void am65_cpsw_get_ethtool_stats(struct net_device *ndev, hw_stats[i].offset); } +static void am65_cpsw_get_eth_mac_stats(struct net_device *ndev, + struct ethtool_eth_mac_stats *s) +{ + struct am65_cpsw_port *port = am65_ndev_to_port(ndev); + struct am65_cpsw_stats_regs __iomem *stats; + + stats = port->stat_base; + + if (s->src != ETHTOOL_MAC_STATS_SRC_AGGREGATE) + return; + + s->FramesTransmittedOK = readl_relaxed(&stats->tx_good_frames); + s->SingleCollisionFrames = readl_relaxed(&stats->tx_single_coll_frames); + s->MultipleCollisionFrames = readl_relaxed(&stats->tx_mult_coll_frames); + s->FramesReceivedOK = readl_relaxed(&stats->rx_good_frames); + s->FrameCheckSequenceErrors = readl_relaxed(&stats->rx_crc_errors); + s->AlignmentErrors = readl_relaxed(&stats->rx_align_code_errors); + s->OctetsTransmittedOK = readl_relaxed(&stats->tx_octets); + s->FramesWithDeferredXmissions = readl_relaxed(&stats->tx_deferred_frames); + s->LateCollisions = readl_relaxed(&stats->tx_late_collisions); + s->CarrierSenseErrors = readl_relaxed(&stats->tx_carrier_sense_errors); + s->OctetsReceivedOK = readl_relaxed(&stats->rx_octets); + s->MulticastFramesXmittedOK = readl_relaxed(&stats->tx_multicast_frames); + s->BroadcastFramesXmittedOK = readl_relaxed(&stats->tx_broadcast_frames); + s->MulticastFramesReceivedOK = readl_relaxed(&stats->rx_multicast_frames); + s->BroadcastFramesReceivedOK = readl_relaxed(&stats->rx_broadcast_frames); +}; + static int am65_cpsw_get_ethtool_ts_info(struct net_device *ndev, struct ethtool_ts_info *info) { @@ -715,6 +744,240 @@ static int am65_cpsw_set_ethtool_priv_flags(struct net_device *ndev, u32 flags) return 0; } +static void am65_cpsw_port_iet_rx_enable(struct am65_cpsw_port *port, bool enable) +{ + u32 val; + + val = readl(port->port_base + AM65_CPSW_PN_REG_CTL); + if (enable) + val |= AM65_CPSW_PN_CTL_IET_PORT_EN; + else + val &= ~AM65_CPSW_PN_CTL_IET_PORT_EN; + + writel(val, port->port_base + AM65_CPSW_PN_REG_CTL); + am65_cpsw_iet_common_enable(port->common); +} + +static void am65_cpsw_port_iet_tx_enable(struct am65_cpsw_port *port, bool enable) +{ + u32 val; + + val = readl(port->port_base + AM65_CPSW_PN_REG_IET_CTRL); + if (enable) + val |= AM65_CPSW_PN_IET_MAC_PENABLE; + else + val &= ~AM65_CPSW_PN_IET_MAC_PENABLE; + + writel(val, port->port_base + AM65_CPSW_PN_REG_IET_CTRL); +} + +static int am65_cpsw_get_mm(struct net_device *ndev, struct ethtool_mm_state *state) +{ + struct am65_cpsw_port *port = am65_ndev_to_port(ndev); + struct am65_cpsw_ndev_priv *priv = netdev_priv(ndev); + u32 port_ctrl, iet_ctrl, iet_status; + u32 add_frag_size; + + if (!IS_ENABLED(CONFIG_TI_AM65_CPSW_QOS)) + return -EOPNOTSUPP; + + mutex_lock(&priv->mm_lock); + + iet_ctrl = readl(port->port_base + AM65_CPSW_PN_REG_IET_CTRL); + port_ctrl = readl(port->port_base + AM65_CPSW_PN_REG_CTL); + + state->tx_enabled = !!(iet_ctrl & AM65_CPSW_PN_IET_MAC_PENABLE); + state->pmac_enabled = !!(port_ctrl & AM65_CPSW_PN_CTL_IET_PORT_EN); + + iet_status = readl(port->port_base + AM65_CPSW_PN_REG_IET_STATUS); + + if (iet_ctrl & AM65_CPSW_PN_IET_MAC_DISABLEVERIFY) + state->verify_status = ETHTOOL_MM_VERIFY_STATUS_DISABLED; + else if (iet_status & AM65_CPSW_PN_MAC_VERIFIED) + state->verify_status = ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED; + else if (iet_status & AM65_CPSW_PN_MAC_VERIFY_FAIL) + state->verify_status = ETHTOOL_MM_VERIFY_STATUS_FAILED; + else + state->verify_status = ETHTOOL_MM_VERIFY_STATUS_UNKNOWN; + + add_frag_size = AM65_CPSW_PN_IET_MAC_GET_ADDFRAGSIZE(iet_ctrl); + state->tx_min_frag_size = ethtool_mm_frag_size_add_to_min(add_frag_size); + + /* Errata i2208: RX min fragment size cannot be less than 124 */ + state->rx_min_frag_size = 124; + + /* FPE active if common tx_enabled and verification success or disabled (forced) */ + state->tx_active = state->tx_enabled && + (state->verify_status == ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED || + state->verify_status == ETHTOOL_MM_VERIFY_STATUS_DISABLED); + state->verify_enabled = !(iet_ctrl & AM65_CPSW_PN_IET_MAC_DISABLEVERIFY); + + state->verify_time = port->qos.iet.verify_time_ms; + + /* 802.3-2018 clause 30.14.1.6, says that the aMACMergeVerifyTime + * variable has a range between 1 and 128 ms inclusive. Limit to that. + */ + state->max_verify_time = 128; + + mutex_unlock(&priv->mm_lock); + + return 0; +} + +static int am65_cpsw_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg, + struct netlink_ext_ack *extack) +{ + struct am65_cpsw_port *port = am65_ndev_to_port(ndev); + struct am65_cpsw_ndev_priv *priv = netdev_priv(ndev); + struct am65_cpsw_iet *iet = &port->qos.iet; + u32 val, add_frag_size; + int err; + + if (!IS_ENABLED(CONFIG_TI_AM65_CPSW_QOS)) + return -EOPNOTSUPP; + + err = ethtool_mm_frag_size_min_to_add(cfg->tx_min_frag_size, &add_frag_size, extack); + if (err) + return err; + + mutex_lock(&priv->mm_lock); + + if (cfg->pmac_enabled) { + /* change TX & RX FIFO MAX_BLKS as per TRM recommendation */ + if (!iet->original_max_blks) + iet->original_max_blks = readl(port->port_base + AM65_CPSW_PN_REG_MAX_BLKS); + + writel(AM65_CPSW_PN_TX_RX_MAX_BLKS_IET, + port->port_base + AM65_CPSW_PN_REG_MAX_BLKS); + } else if (iet->original_max_blks) { + /* restore RX & TX FIFO MAX_BLKS */ + writel(iet->original_max_blks, + port->port_base + AM65_CPSW_PN_REG_MAX_BLKS); + } + + am65_cpsw_port_iet_rx_enable(port, cfg->pmac_enabled); + am65_cpsw_port_iet_tx_enable(port, cfg->tx_enabled); + + val = readl(port->port_base + AM65_CPSW_PN_REG_IET_CTRL); + if (cfg->verify_enabled) { + val &= ~AM65_CPSW_PN_IET_MAC_DISABLEVERIFY; + /* Reset Verify state machine. Verification won't start here. + * Verification will be done once link-up. + */ + val |= AM65_CPSW_PN_IET_MAC_LINKFAIL; + } else { + val |= AM65_CPSW_PN_IET_MAC_DISABLEVERIFY; + /* Clear LINKFAIL to allow verify/response packets */ + val &= ~AM65_CPSW_PN_IET_MAC_LINKFAIL; + } + + val &= ~AM65_CPSW_PN_IET_MAC_MAC_ADDFRAGSIZE_MASK; + val |= AM65_CPSW_PN_IET_MAC_SET_ADDFRAGSIZE(add_frag_size); + writel(val, port->port_base + AM65_CPSW_PN_REG_IET_CTRL); + + /* verify_timeout_count can only be set at valid link */ + port->qos.iet.verify_time_ms = cfg->verify_time; + + /* enable/disable preemption based on link status */ + am65_cpsw_iet_commit_preemptible_tcs(port); + + mutex_unlock(&priv->mm_lock); + + return 0; +} + +static void am65_cpsw_get_mm_stats(struct net_device *ndev, + struct ethtool_mm_stats *s) +{ + struct am65_cpsw_port *port = am65_ndev_to_port(ndev); + void __iomem *base = port->stat_base; + + s->MACMergeFrameAssOkCount = readl(base + AM65_CPSW_STATN_IET_RX_ASSEMBLY_OK); + s->MACMergeFrameAssErrorCount = readl(base + AM65_CPSW_STATN_IET_RX_ASSEMBLY_ERROR); + s->MACMergeFrameSmdErrorCount = readl(base + AM65_CPSW_STATN_IET_RX_SMD_ERROR); + /* CPSW Functional Spec states: + * "The IET stat aMACMergeFragCountRx is derived by adding the + * Receive Assembly Error count to this value. i.e. AM65_CPSW_STATN_IET_RX_FRAG" + */ + s->MACMergeFragCountRx = readl(base + AM65_CPSW_STATN_IET_RX_FRAG) + s->MACMergeFrameAssErrorCount; + s->MACMergeFragCountTx = readl(base + AM65_CPSW_STATN_IET_TX_FRAG); + s->MACMergeHoldCount = readl(base + AM65_CPSW_STATN_IET_TX_HOLD); +} + +static int am65_cpsw_get_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct am65_cpsw_common *common = am65_ndev_to_common(ndev); + struct am65_cpsw_tx_chn *tx_chn; + + tx_chn = &common->tx_chns[0]; + + coal->rx_coalesce_usecs = common->rx_pace_timeout / 1000; + coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout / 1000; + + return 0; +} + +static int am65_cpsw_get_per_queue_coalesce(struct net_device *ndev, u32 queue, + struct ethtool_coalesce *coal) +{ + struct am65_cpsw_common *common = am65_ndev_to_common(ndev); + struct am65_cpsw_tx_chn *tx_chn; + + if (queue >= AM65_CPSW_MAX_TX_QUEUES) + return -EINVAL; + + tx_chn = &common->tx_chns[queue]; + + coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout / 1000; + + return 0; +} + +static int am65_cpsw_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct am65_cpsw_common *common = am65_ndev_to_common(ndev); + struct am65_cpsw_tx_chn *tx_chn; + + tx_chn = &common->tx_chns[0]; + + if (coal->rx_coalesce_usecs && coal->rx_coalesce_usecs < 20) + return -EINVAL; + + if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20) + return -EINVAL; + + common->rx_pace_timeout = coal->rx_coalesce_usecs * 1000; + tx_chn->tx_pace_timeout = coal->tx_coalesce_usecs * 1000; + + return 0; +} + +static int am65_cpsw_set_per_queue_coalesce(struct net_device *ndev, u32 queue, + struct ethtool_coalesce *coal) +{ + struct am65_cpsw_common *common = am65_ndev_to_common(ndev); + struct am65_cpsw_tx_chn *tx_chn; + + if (queue >= AM65_CPSW_MAX_TX_QUEUES) + return -EINVAL; + + tx_chn = &common->tx_chns[queue]; + + if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20) { + dev_info(common->dev, "defaulting to min value of 20us for tx-usecs for tx-%u\n", + queue); + coal->tx_coalesce_usecs = 20; + } + + tx_chn->tx_pace_timeout = coal->tx_coalesce_usecs * 1000; + + return 0; +} + const struct ethtool_ops am65_cpsw_ethtool_ops_slave = { .begin = am65_cpsw_ethtool_op_begin, .complete = am65_cpsw_ethtool_op_complete, @@ -729,9 +992,15 @@ const struct ethtool_ops am65_cpsw_ethtool_ops_slave = { .get_sset_count = am65_cpsw_get_sset_count, .get_strings = am65_cpsw_get_strings, .get_ethtool_stats = am65_cpsw_get_ethtool_stats, + .get_eth_mac_stats = am65_cpsw_get_eth_mac_stats, .get_ts_info = am65_cpsw_get_ethtool_ts_info, .get_priv_flags = am65_cpsw_get_ethtool_priv_flags, .set_priv_flags = am65_cpsw_set_ethtool_priv_flags, + .supported_coalesce_params = ETHTOOL_COALESCE_USECS, + .get_coalesce = am65_cpsw_get_coalesce, + .set_coalesce = am65_cpsw_set_coalesce, + .get_per_queue_coalesce = am65_cpsw_get_per_queue_coalesce, + .set_per_queue_coalesce = am65_cpsw_set_per_queue_coalesce, .get_link = ethtool_op_get_link, .get_link_ksettings = am65_cpsw_get_link_ksettings, @@ -743,4 +1012,7 @@ const struct ethtool_ops am65_cpsw_ethtool_ops_slave = { .get_eee = am65_cpsw_get_eee, .set_eee = am65_cpsw_set_eee, .nway_reset = am65_cpsw_nway_reset, + .get_mm = am65_cpsw_get_mm, + .set_mm = am65_cpsw_set_mm, + .get_mm_stats = am65_cpsw_get_mm_stats, }; |