generic: ar8216: introduce qca,mib-poll-interval property
[openwrt/openwrt.git] / target / linux / generic / files / drivers / net / phy / ar8216.c
index e1c3dc95c30eb0ece265775a18c5222760ee79f4..a2c42d18e6c3570ff39132cb7e1299d52c391c53 100644 (file)
@@ -653,7 +653,8 @@ ar8216_read_port_status(struct ar8xxx_priv *priv, int port)
 }
 
 static void
-ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
+__ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members,
+                   bool ath_hdr_en)
 {
        u32 header;
        u32 egress, ingress;
@@ -672,10 +673,7 @@ ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
                ingress = AR8216_IN_PORT_ONLY;
        }
 
-       if (chip_is_ar8216(priv) && priv->vlan && port == AR8216_PORT_CPU)
-               header = AR8216_PORT_CTRL_HEADER;
-       else
-               header = 0;
+       header = ath_hdr_en ? AR8216_PORT_CTRL_HEADER : 0;
 
        ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(port),
                   AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
@@ -693,12 +691,23 @@ ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
                   (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
 }
 
+static void
+ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
+{
+       return __ar8216_setup_port(priv, port, members,
+                                  chip_is_ar8216(priv) && priv->vlan &&
+                                  port == AR8216_PORT_CPU);
+}
+
 static int
 ar8216_hw_init(struct ar8xxx_priv *priv)
 {
        if (priv->initialized)
                return 0;
 
+       ar8xxx_write(priv, AR8216_REG_CTRL, AR8216_CTRL_RESET);
+       ar8xxx_reg_wait(priv, AR8216_REG_CTRL, AR8216_CTRL_RESET, 0, 1000);
+
        ar8xxx_phy_init(priv);
 
        priv->initialized = true;
@@ -815,6 +824,52 @@ static void ar8216_get_arl_entry(struct ar8xxx_priv *priv,
        }
 }
 
+static int
+ar8216_phy_read(struct ar8xxx_priv *priv, int addr, int regnum)
+{
+       u32 t, val = 0xffff;
+       int err;
+
+       if (addr >= AR8216_NUM_PORTS)
+               return 0xffff;
+       t = (regnum << AR8216_MDIO_CTRL_REG_ADDR_S) |
+           (addr << AR8216_MDIO_CTRL_PHY_ADDR_S) |
+           AR8216_MDIO_CTRL_MASTER_EN |
+           AR8216_MDIO_CTRL_BUSY |
+           AR8216_MDIO_CTRL_CMD_READ;
+
+       ar8xxx_write(priv, AR8216_REG_MDIO_CTRL, t);
+       err = ar8xxx_reg_wait(priv, AR8216_REG_MDIO_CTRL,
+                             AR8216_MDIO_CTRL_BUSY, 0, 5);
+       if (!err)
+               val = ar8xxx_read(priv, AR8216_REG_MDIO_CTRL);
+
+       return val & AR8216_MDIO_CTRL_DATA_M;
+}
+
+static int
+ar8216_phy_write(struct ar8xxx_priv *priv, int addr, int regnum, u16 val)
+{
+       u32 t;
+       int ret;
+
+       if (addr >= AR8216_NUM_PORTS)
+               return -EINVAL;
+
+       t = (addr << AR8216_MDIO_CTRL_PHY_ADDR_S) |
+           (regnum << AR8216_MDIO_CTRL_REG_ADDR_S) |
+           AR8216_MDIO_CTRL_MASTER_EN |
+           AR8216_MDIO_CTRL_BUSY |
+           AR8216_MDIO_CTRL_CMD_WRITE |
+           val;
+
+       ar8xxx_write(priv, AR8216_REG_MDIO_CTRL, t);
+       ret = ar8xxx_reg_wait(priv, AR8216_REG_MDIO_CTRL,
+                             AR8216_MDIO_CTRL_BUSY, 0, 5);
+
+       return ret;
+}
+
 static int
 ar8229_hw_init(struct ar8xxx_priv *priv)
 {
@@ -839,9 +894,12 @@ ar8229_hw_init(struct ar8xxx_priv *priv)
                return -EINVAL;
        }
 
-       if (priv->port4_phy)
+       if (priv->port4_phy) {
                ar8xxx_write(priv, AR8229_REG_OPER_MODE1,
                             AR8229_REG_OPER_MODE1_PHY4_MII_EN);
+               /* disable port5 to prevent mii conflict */
+               ar8xxx_write(priv, AR8216_REG_PORT_STATUS(5), 0);
+       }
 
        ar8xxx_phy_init(priv);
 
@@ -894,6 +952,65 @@ ar8229_init_port(struct ar8xxx_priv *priv, int port)
        __ar8216_init_port(priv, port, true, true);
 }
 
+
+static int
+ar7240sw_hw_init(struct ar8xxx_priv *priv)
+{
+       if (priv->initialized)
+               return 0;
+
+       ar8xxx_write(priv, AR8216_REG_CTRL, AR8216_CTRL_RESET);
+       ar8xxx_reg_wait(priv, AR8216_REG_CTRL, AR8216_CTRL_RESET, 0, 1000);
+
+       priv->port4_phy = 1;
+       /* disable port5 to prevent mii conflict */
+       ar8xxx_write(priv, AR8216_REG_PORT_STATUS(5), 0);
+
+       ar8xxx_phy_init(priv);
+
+       priv->initialized = true;
+       return 0;
+}
+
+static void
+ar7240sw_init_globals(struct ar8xxx_priv *priv)
+{
+
+       /* Enable CPU port, and disable mirror port */
+       ar8xxx_write(priv, AR8216_REG_GLOBAL_CPUPORT,
+                    AR8216_GLOBAL_CPUPORT_EN |
+                    (15 << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S));
+
+       /* Setup TAG priority mapping */
+       ar8xxx_write(priv, AR8216_REG_TAG_PRIORITY, 0xfa50);
+
+       /* Enable ARP frame acknowledge, aging, MAC replacing */
+       ar8xxx_write(priv, AR8216_REG_ATU_CTRL,
+               AR8216_ATU_CTRL_RESERVED |
+               0x2b /* 5 min age time */ |
+               AR8216_ATU_CTRL_AGE_EN |
+               AR8216_ATU_CTRL_ARP_EN |
+               AR8216_ATU_CTRL_LEARN_CHANGE);
+
+       /* Enable Broadcast frames transmitted to the CPU */
+       ar8xxx_reg_set(priv, AR8216_REG_FLOOD_MASK,
+                      AR8236_FM_CPU_BROADCAST_EN);
+
+       /* setup MTU */
+       ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL,
+                  AR8216_GCTRL_MTU,
+                  AR8216_GCTRL_MTU);
+
+       /* setup Service TAG */
+       ar8xxx_rmw(priv, AR8216_REG_SERVICE_TAG, AR8216_SERVICE_TAG_M, 0);
+}
+
+static void
+ar7240sw_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
+{
+       return __ar8216_setup_port(priv, port, members, false);
+}
+
 static void
 ar8236_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
 {
@@ -1683,6 +1800,33 @@ ar8xxx_sw_set_flush_port_arl_table(struct switch_dev *dev,
        return ret;
 }
 
+int
+ar8xxx_sw_get_port_stats(struct switch_dev *dev, int port,
+                       struct switch_port_stats *stats)
+{
+       struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
+       u64 *mib_stats;
+
+       if (!ar8xxx_has_mib_counters(priv))
+               return -EOPNOTSUPP;
+
+       if (!(priv->chip->mib_rxb_id || priv->chip->mib_txb_id))
+               return -EOPNOTSUPP;
+
+       if (port >= dev->ports)
+               return -EINVAL;
+
+       mutex_lock(&priv->mib_lock);
+
+       mib_stats = &priv->mib_stats[port * priv->chip->num_mibs];
+
+       stats->tx_bytes = mib_stats[priv->chip->mib_txb_id];
+       stats->rx_bytes = mib_stats[priv->chip->mib_rxb_id];
+
+       mutex_unlock(&priv->mib_lock);
+       return 0;
+}
+
 static int
 ar8xxx_phy_read(struct mii_bus *bus, int phy_addr, int reg_addr)
 {
@@ -1813,16 +1957,41 @@ static const struct switch_dev_ops ar8xxx_sw_ops = {
        .apply_config = ar8xxx_sw_hw_apply,
        .reset_switch = ar8xxx_sw_reset_switch,
        .get_port_link = ar8xxx_sw_get_port_link,
-/* The following op is disabled as it hogs the CPU and degrades performance.
-   An implementation has been attempted in 4d8a66d but reading MIB data is slow
-   on ar8xxx switches.
-
-   The high CPU load has been traced down to the ar8xxx_reg_wait() call in
-   ar8xxx_mib_op(), which has to usleep_range() till the MIB busy flag set by
-   the request to update the MIB counter is cleared. */
-#if 0
        .get_port_stats = ar8xxx_sw_get_port_stats,
-#endif
+};
+
+static const struct ar8xxx_chip ar7240sw_chip = {
+       .caps = AR8XXX_CAP_MIB_COUNTERS,
+
+       .reg_port_stats_start = 0x20000,
+       .reg_port_stats_length = 0x100,
+       .reg_arl_ctrl = AR8216_REG_ATU_CTRL,
+
+       .name = "Atheros AR724X/AR933X built-in",
+       .ports = AR7240SW_NUM_PORTS,
+       .vlans = AR8216_NUM_VLANS,
+       .swops = &ar8xxx_sw_ops,
+
+       .hw_init = ar7240sw_hw_init,
+       .init_globals = ar7240sw_init_globals,
+       .init_port = ar8229_init_port,
+       .phy_read = ar8216_phy_read,
+       .phy_write = ar8216_phy_write,
+       .setup_port = ar7240sw_setup_port,
+       .read_port_status = ar8216_read_port_status,
+       .atu_flush = ar8216_atu_flush,
+       .atu_flush_port = ar8216_atu_flush_port,
+       .vtu_flush = ar8216_vtu_flush,
+       .vtu_load_vlan = ar8216_vtu_load_vlan,
+       .set_mirror_regs = ar8216_set_mirror_regs,
+       .get_arl_entry = ar8216_get_arl_entry,
+       .sw_hw_apply = ar8xxx_sw_hw_apply,
+
+       .num_mibs = ARRAY_SIZE(ar8236_mibs),
+       .mib_decs = ar8236_mibs,
+       .mib_func = AR8216_REG_MIB_FUNC,
+       .mib_rxb_id = AR8236_MIB_RXB_ID,
+       .mib_txb_id = AR8236_MIB_TXB_ID,
 };
 
 static const struct ar8xxx_chip ar8216_chip = {
@@ -1852,7 +2021,9 @@ static const struct ar8xxx_chip ar8216_chip = {
 
        .num_mibs = ARRAY_SIZE(ar8216_mibs),
        .mib_decs = ar8216_mibs,
-       .mib_func = AR8216_REG_MIB_FUNC
+       .mib_func = AR8216_REG_MIB_FUNC,
+       .mib_rxb_id = AR8216_MIB_RXB_ID,
+       .mib_txb_id = AR8216_MIB_TXB_ID,
 };
 
 static const struct ar8xxx_chip ar8229_chip = {
@@ -1870,6 +2041,8 @@ static const struct ar8xxx_chip ar8229_chip = {
        .hw_init = ar8229_hw_init,
        .init_globals = ar8229_init_globals,
        .init_port = ar8229_init_port,
+       .phy_read = ar8216_phy_read,
+       .phy_write = ar8216_phy_write,
        .setup_port = ar8236_setup_port,
        .read_port_status = ar8216_read_port_status,
        .atu_flush = ar8216_atu_flush,
@@ -1882,7 +2055,9 @@ static const struct ar8xxx_chip ar8229_chip = {
 
        .num_mibs = ARRAY_SIZE(ar8236_mibs),
        .mib_decs = ar8236_mibs,
-       .mib_func = AR8216_REG_MIB_FUNC
+       .mib_func = AR8216_REG_MIB_FUNC,
+       .mib_rxb_id = AR8236_MIB_RXB_ID,
+       .mib_txb_id = AR8236_MIB_TXB_ID,
 };
 
 static const struct ar8xxx_chip ar8236_chip = {
@@ -1912,7 +2087,9 @@ static const struct ar8xxx_chip ar8236_chip = {
 
        .num_mibs = ARRAY_SIZE(ar8236_mibs),
        .mib_decs = ar8236_mibs,
-       .mib_func = AR8216_REG_MIB_FUNC
+       .mib_func = AR8216_REG_MIB_FUNC,
+       .mib_rxb_id = AR8236_MIB_RXB_ID,
+       .mib_txb_id = AR8236_MIB_TXB_ID,
 };
 
 static const struct ar8xxx_chip ar8316_chip = {
@@ -1942,7 +2119,9 @@ static const struct ar8xxx_chip ar8316_chip = {
 
        .num_mibs = ARRAY_SIZE(ar8236_mibs),
        .mib_decs = ar8236_mibs,
-       .mib_func = AR8216_REG_MIB_FUNC
+       .mib_func = AR8216_REG_MIB_FUNC,
+       .mib_rxb_id = AR8236_MIB_RXB_ID,
+       .mib_txb_id = AR8236_MIB_TXB_ID,
 };
 
 static int
@@ -2013,7 +2192,7 @@ static void
 ar8xxx_mib_work_func(struct work_struct *work)
 {
        struct ar8xxx_priv *priv;
-       int err;
+       int err, i;
 
        priv = container_of(work, struct ar8xxx_priv, mib_work.work);
 
@@ -2021,18 +2200,15 @@ ar8xxx_mib_work_func(struct work_struct *work)
 
        err = ar8xxx_mib_capture(priv);
        if (err)
-               goto next_port;
-
-       ar8xxx_mib_fetch_port_stat(priv, priv->mib_next_port, false);
+               goto next_attempt;
 
-next_port:
-       priv->mib_next_port++;
-       if (priv->mib_next_port >= priv->dev.ports)
-               priv->mib_next_port = 0;
+       for (i = 0; i < priv->dev.ports; i++)
+               ar8xxx_mib_fetch_port_stat(priv, i, false);
 
+next_attempt:
        mutex_unlock(&priv->mib_lock);
        schedule_delayed_work(&priv->mib_work,
-                             msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
+                             msecs_to_jiffies(priv->mib_poll_interval));
 }
 
 static int
@@ -2062,7 +2238,7 @@ ar8xxx_mib_start(struct ar8xxx_priv *priv)
                return;
 
        schedule_delayed_work(&priv->mib_work,
-                             msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
+                             msecs_to_jiffies(priv->mib_poll_interval));
 }
 
 static void
@@ -2337,6 +2513,11 @@ ar8xxx_phy_probe(struct phy_device *phydev)
        priv->mii_bus = phydev->mdio.bus;
        priv->pdev = &phydev->mdio.dev;
 
+       ret = of_property_read_u32(priv->pdev->of_node, "qca,mib-poll-interval",
+                                  &priv->mib_poll_interval);
+       if (ret)
+               priv->mib_poll_interval = AR8XXX_MIB_WORK_DELAY;
+
        ret = ar8xxx_id_chip(priv);
        if (ret)
                goto free_priv;
@@ -2468,6 +2649,9 @@ static struct phy_driver ar8xxx_phy_driver[] = {
 
 static const struct of_device_id ar8xxx_mdiodev_of_match[] = {
        {
+               .compatible = "qca,ar7240sw",
+               .data = &ar7240sw_chip,
+       }, {
                .compatible = "qca,ar8229",
                .data = &ar8229_chip,
        }, {
@@ -2501,6 +2685,11 @@ ar8xxx_mdiodev_probe(struct mdio_device *mdiodev)
        priv->pdev = &mdiodev->dev;
        priv->chip = (const struct ar8xxx_chip *) match->data;
 
+       ret = of_property_read_u32(priv->pdev->of_node, "qca,mib-poll-interval",
+                                  &priv->mib_poll_interval);
+       if (ret)
+               priv->mib_poll_interval = AR8XXX_MIB_WORK_DELAY;
+
        ret = ar8xxx_read_id(priv);
        if (ret)
                goto free_priv;
@@ -2526,6 +2715,12 @@ ar8xxx_mdiodev_probe(struct mdio_device *mdiodev)
 
        swdev = &priv->dev;
        swdev->alias = dev_name(&mdiodev->dev);
+
+       if (of_property_read_bool(priv->pdev->of_node, "qca,phy4-mii-enable")) {
+               priv->port4_phy = true;
+               swdev->ports--;
+       }
+
        ret = register_switch(swdev, NULL);
        if (ret)
                goto free_priv;