diff options
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.c | 104 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.h | 26 |
2 files changed, 130 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index fcbf1255ae5a..f2fadb053d52 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -714,6 +714,98 @@ static void bcmgenet_get_ethtool_stats(struct net_device *dev, } } +static void bcmgenet_eee_enable_set(struct net_device *dev, bool enable) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + u32 off = priv->hw_params->tbuf_offset + TBUF_ENERGY_CTRL; + u32 reg; + + if (enable && !priv->clk_eee_enabled) { + clk_prepare_enable(priv->clk_eee); + priv->clk_eee_enabled = true; + } + + reg = bcmgenet_umac_readl(priv, UMAC_EEE_CTRL); + if (enable) + reg |= EEE_EN; + else + reg &= ~EEE_EN; + bcmgenet_umac_writel(priv, reg, UMAC_EEE_CTRL); + + /* Enable EEE and switch to a 27Mhz clock automatically */ + reg = __raw_readl(priv->base + off); + if (enable) + reg |= TBUF_EEE_EN | TBUF_PM_EN; + else + reg &= ~(TBUF_EEE_EN | TBUF_PM_EN); + __raw_writel(reg, priv->base + off); + + /* Do the same for thing for RBUF */ + reg = bcmgenet_rbuf_readl(priv, RBUF_ENERGY_CTRL); + if (enable) + reg |= RBUF_EEE_EN | RBUF_PM_EN; + else + reg &= ~(RBUF_EEE_EN | RBUF_PM_EN); + bcmgenet_rbuf_writel(priv, reg, RBUF_ENERGY_CTRL); + + if (!enable && priv->clk_eee_enabled) { + clk_disable_unprepare(priv->clk_eee); + priv->clk_eee_enabled = false; + } + + priv->eee.eee_enabled = enable; + priv->eee.eee_active = enable; +} + +static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + struct ethtool_eee *p = &priv->eee; + + if (GENET_IS_V1(priv)) + return -EOPNOTSUPP; + + e->eee_enabled = p->eee_enabled; + e->eee_active = p->eee_active; + e->tx_lpi_timer = bcmgenet_umac_readl(priv, UMAC_EEE_LPI_TIMER); + + return phy_ethtool_get_eee(priv->phydev, e); +} + +static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + struct ethtool_eee *p = &priv->eee; + int ret = 0; + + if (GENET_IS_V1(priv)) + return -EOPNOTSUPP; + + p->eee_enabled = e->eee_enabled; + + if (!p->eee_enabled) { + bcmgenet_eee_enable_set(dev, false); + } else { + ret = phy_init_eee(priv->phydev, 0); + if (ret) { + netif_err(priv, hw, dev, "EEE initialization failed\n"); + return ret; + } + + bcmgenet_umac_writel(priv, e->tx_lpi_timer, UMAC_EEE_LPI_TIMER); + bcmgenet_eee_enable_set(dev, true); + } + + return phy_ethtool_set_eee(priv->phydev, e); +} + +static int bcmgenet_nway_reset(struct net_device *dev) +{ + struct bcmgenet_priv *priv = netdev_priv(dev); + + return genphy_restart_aneg(priv->phydev); +} + /* standard ethtool support functions. */ static struct ethtool_ops bcmgenet_ethtool_ops = { .get_strings = bcmgenet_get_strings, @@ -727,6 +819,9 @@ static struct ethtool_ops bcmgenet_ethtool_ops = { .set_msglevel = bcmgenet_set_msglevel, .get_wol = bcmgenet_get_wol, .set_wol = bcmgenet_set_wol, + .get_eee = bcmgenet_get_eee, + .set_eee = bcmgenet_set_eee, + .nway_reset = bcmgenet_nway_reset, }; /* Power down the unimac, based on mode. */ @@ -2585,6 +2680,12 @@ static int bcmgenet_probe(struct platform_device *pdev) if (IS_ERR(priv->clk_wol)) dev_warn(&priv->pdev->dev, "failed to get enet-wol clock\n"); + priv->clk_eee = devm_clk_get(&priv->pdev->dev, "enet-eee"); + if (IS_ERR(priv->clk_eee)) { + dev_warn(&priv->pdev->dev, "failed to get enet-eee clock\n"); + priv->clk_eee = NULL; + } + err = reset_umac(priv); if (err) goto err_clk_disable; @@ -2735,6 +2836,9 @@ static int bcmgenet_resume(struct device *d) phy_resume(priv->phydev); + if (priv->eee.eee_enabled) + bcmgenet_eee_enable_set(dev, true); + bcmgenet_netif_start(dev); return 0; diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index c4ca7282a601..b36ddec0cc0a 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -185,6 +185,21 @@ struct bcmgenet_mib_counters { #define UMAC_MAC1 0x010 #define UMAC_MAX_FRAME_LEN 0x014 +#define UMAC_EEE_CTRL 0x064 +#define EN_LPI_RX_PAUSE (1 << 0) +#define EN_LPI_TX_PFC (1 << 1) +#define EN_LPI_TX_PAUSE (1 << 2) +#define EEE_EN (1 << 3) +#define RX_FIFO_CHECK (1 << 4) +#define EEE_TX_CLK_DIS (1 << 5) +#define DIS_EEE_10M (1 << 6) +#define LP_IDLE_PREDICTION_MODE (1 << 7) + +#define UMAC_EEE_LPI_TIMER 0x068 +#define UMAC_EEE_WAKE_TIMER 0x06C +#define UMAC_EEE_REF_COUNT 0x070 +#define EEE_REFERENCE_COUNT_MASK 0xffff + #define UMAC_TX_FLUSH 0x334 #define UMAC_MIB_START 0x400 @@ -232,6 +247,10 @@ struct bcmgenet_mib_counters { #define RBUF_RXCHK_EN (1 << 0) #define RBUF_SKIP_FCS (1 << 4) +#define RBUF_ENERGY_CTRL 0x9c +#define RBUF_EEE_EN (1 << 0) +#define RBUF_PM_EN (1 << 1) + #define RBUF_TBUF_SIZE_CTRL 0xb4 #define RBUF_HFB_CTRL_V1 0x38 @@ -247,6 +266,9 @@ struct bcmgenet_mib_counters { #define TBUF_CTRL 0x00 #define TBUF_BP_MC 0x0C +#define TBUF_ENERGY_CTRL 0x14 +#define TBUF_EEE_EN (1 << 0) +#define TBUF_PM_EN (1 << 1) #define TBUF_CTRL_V1 0x80 #define TBUF_BP_MC_V1 0xA0 @@ -551,6 +573,8 @@ struct bcmgenet_priv { struct device_node *phy_dn; struct mii_bus *mii_bus; u16 gphy_rev; + struct clk *clk_eee; + bool clk_eee_enabled; /* PHY device variables */ int old_link; @@ -587,6 +611,8 @@ struct bcmgenet_priv { u32 wolopts; struct bcmgenet_mib_counters mib; + + struct ethtool_eee eee; }; #define GENET_IO_MACRO(name, offset) \ |