diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_ethtool.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_ethtool.c index 253d7ad9b809..8b63968bbee9 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_ethtool.c @@ -124,6 +124,41 @@ static void mlxbf_gige_get_pauseparam(struct net_device *netdev, pause->tx_pause = 1; } +static bool mlxbf_gige_llu_counters_enabled(struct mlxbf_gige *priv) +{ + u32 data; + + if (priv->hw_version == MLXBF_GIGE_VERSION_BF2) { + data = readl(priv->llu_base + MLXBF_GIGE_BF2_LLU_GENERAL_CONFIG); + if (data & MLXBF_GIGE_BF2_LLU_COUNTERS_EN) + return true; + } else { + data = readl(priv->llu_base + MLXBF_GIGE_BF3_LLU_GENERAL_CONFIG); + if (data & MLXBF_GIGE_BF3_LLU_COUNTERS_EN) + return true; + } + + return false; +} + +static void mlxbf_gige_get_pause_stats(struct net_device *netdev, + struct ethtool_pause_stats *pause_stats) +{ + struct mlxbf_gige *priv = netdev_priv(netdev); + u64 data_lo, data_hi; + + /* Read LLU counters to provide stats only if counters are enabled */ + if (mlxbf_gige_llu_counters_enabled(priv)) { + data_lo = readl(priv->llu_base + MLXBF_GIGE_TX_PAUSE_CNT_LO); + data_hi = readl(priv->llu_base + MLXBF_GIGE_TX_PAUSE_CNT_HI); + pause_stats->tx_pause_frames = (data_hi << 32) | data_lo; + + data_lo = readl(priv->llu_base + MLXBF_GIGE_RX_PAUSE_CNT_LO); + data_hi = readl(priv->llu_base + MLXBF_GIGE_RX_PAUSE_CNT_HI); + pause_stats->rx_pause_frames = (data_hi << 32) | data_lo; + } +} + const struct ethtool_ops mlxbf_gige_ethtool_ops = { .get_link = ethtool_op_get_link, .get_ringparam = mlxbf_gige_get_ringparam, @@ -134,6 +169,7 @@ const struct ethtool_ops mlxbf_gige_ethtool_ops = { .get_ethtool_stats = mlxbf_gige_get_ethtool_stats, .nway_reset = phy_ethtool_nway_reset, .get_pauseparam = mlxbf_gige_get_pauseparam, + .get_pause_stats = mlxbf_gige_get_pause_stats, .get_link_ksettings = phy_ethtool_get_link_ksettings, .set_link_ksettings = phy_ethtool_set_link_ksettings, }; diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h index cd0973229c9b..98a8681c21b9 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_regs.h @@ -99,4 +99,34 @@ #define MLXBF_GIGE_100M_IPG_SIZE 119 #define MLXBF_GIGE_10M_IPG_SIZE 1199 +/* Offsets into OOB LLU block for pause frame counters */ +#define MLXBF_GIGE_BF2_TX_PAUSE_CNT_HI 0x33d8 +#define MLXBF_GIGE_BF2_TX_PAUSE_CNT_LO 0x33dc +#define MLXBF_GIGE_BF2_RX_PAUSE_CNT_HI 0x3210 +#define MLXBF_GIGE_BF2_RX_PAUSE_CNT_LO 0x3214 + +#define MLXBF_GIGE_BF3_TX_PAUSE_CNT_HI 0x3a88 +#define MLXBF_GIGE_BF3_TX_PAUSE_CNT_LO 0x3a8c +#define MLXBF_GIGE_BF3_RX_PAUSE_CNT_HI 0x38c0 +#define MLXBF_GIGE_BF3_RX_PAUSE_CNT_LO 0x38c4 + +#define MLXBF_GIGE_TX_PAUSE_CNT_HI ((priv->hw_version == MLXBF_GIGE_VERSION_BF2) ? \ + MLXBF_GIGE_BF2_TX_PAUSE_CNT_HI : \ + MLXBF_GIGE_BF3_TX_PAUSE_CNT_HI) +#define MLXBF_GIGE_TX_PAUSE_CNT_LO ((priv->hw_version == MLXBF_GIGE_VERSION_BF2) ? \ + MLXBF_GIGE_BF2_TX_PAUSE_CNT_LO : \ + MLXBF_GIGE_BF3_TX_PAUSE_CNT_LO) +#define MLXBF_GIGE_RX_PAUSE_CNT_HI ((priv->hw_version == MLXBF_GIGE_VERSION_BF2) ? \ + MLXBF_GIGE_BF2_RX_PAUSE_CNT_HI : \ + MLXBF_GIGE_BF3_RX_PAUSE_CNT_HI) +#define MLXBF_GIGE_RX_PAUSE_CNT_LO ((priv->hw_version == MLXBF_GIGE_VERSION_BF2) ? \ + MLXBF_GIGE_BF2_RX_PAUSE_CNT_LO : \ + MLXBF_GIGE_BF3_RX_PAUSE_CNT_LO) + +#define MLXBF_GIGE_BF2_LLU_GENERAL_CONFIG 0x2110 +#define MLXBF_GIGE_BF3_LLU_GENERAL_CONFIG 0x2030 + +#define MLXBF_GIGE_BF2_LLU_COUNTERS_EN BIT(0) +#define MLXBF_GIGE_BF3_LLU_COUNTERS_EN BIT(4) + #endif /* !defined(__MLXBF_GIGE_REGS_H__) */