ar8216: prefix mii_xxx functions to avoid kernel namespace pollution
[openwrt/staging/yousong.git] / target / linux / generic / files / drivers / net / phy / ar8216.c
index b88e9ec45974e2acaec7cc17ec428ed7a406f5d0..e39d540a258e1dfb3817cc47170f6cb83a4dfdf3 100644 (file)
@@ -134,19 +134,6 @@ const struct ar8xxx_mib_desc ar8236_mibs[39] = {
 static DEFINE_MUTEX(ar8xxx_dev_list_lock);
 static LIST_HEAD(ar8xxx_dev_list);
 
-static inline void
-split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
-{
-       regaddr >>= 1;
-       *r1 = regaddr & 0x1e;
-
-       regaddr >>= 5;
-       *r2 = regaddr & 0x7;
-
-       regaddr >>= 3;
-       *page = regaddr & 0x1ff;
-}
-
 /* inspired by phy_poll_reset in drivers/net/phy/phy_device.c */
 static int
 ar8xxx_phy_poll_reset(struct mii_bus *bus)
@@ -217,8 +204,8 @@ ar8xxx_phy_init(struct ar8xxx_priv *priv)
        ar8xxx_phy_poll_reset(bus);
 }
 
-static u32
-mii_read32(struct ar8xxx_priv *priv, int phy_id, int regnum)
+u32
+ar8xxx_mii_read32(struct ar8xxx_priv *priv, int phy_id, int regnum)
 {
        struct mii_bus *bus = priv->mii_bus;
        u16 lo, hi;
@@ -229,8 +216,8 @@ mii_read32(struct ar8xxx_priv *priv, int phy_id, int regnum)
        return (hi << 16) | lo;
 }
 
-static void
-mii_write32(struct ar8xxx_priv *priv, int phy_id, int regnum, u32 val)
+void
+ar8xxx_mii_write32(struct ar8xxx_priv *priv, int phy_id, int regnum, u32 val)
 {
        struct mii_bus *bus = priv->mii_bus;
        u16 lo, hi;
@@ -260,8 +247,8 @@ ar8xxx_read(struct ar8xxx_priv *priv, int reg)
        mutex_lock(&bus->mdio_lock);
 
        bus->write(bus, 0x18, 0, page);
-       usleep_range(1000, 2000); /* wait for the page switch to propagate */
-       val = mii_read32(priv, 0x10 | r2, r1);
+       wait_for_page_switch();
+       val = ar8xxx_mii_read32(priv, 0x10 | r2, r1);
 
        mutex_unlock(&bus->mdio_lock);
 
@@ -279,8 +266,8 @@ ar8xxx_write(struct ar8xxx_priv *priv, int reg, u32 val)
        mutex_lock(&bus->mdio_lock);
 
        bus->write(bus, 0x18, 0, page);
-       usleep_range(1000, 2000); /* wait for the page switch to propagate */
-       mii_write32(priv, 0x10 | r2, r1, val);
+       wait_for_page_switch();
+       ar8xxx_mii_write32(priv, 0x10 | r2, r1, val);
 
        mutex_unlock(&bus->mdio_lock);
 }
@@ -297,12 +284,12 @@ ar8xxx_rmw(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val)
        mutex_lock(&bus->mdio_lock);
 
        bus->write(bus, 0x18, 0, page);
-       usleep_range(1000, 2000); /* wait for the page switch to propagate */
+       wait_for_page_switch();
 
-       ret = mii_read32(priv, 0x10 | r2, r1);
+       ret = ar8xxx_mii_read32(priv, 0x10 | r2, r1);
        ret &= ~mask;
        ret |= val;
-       mii_write32(priv, 0x10 | r2, r1, ret);
+       ar8xxx_mii_write32(priv, 0x10 | r2, r1, ret);
 
        mutex_unlock(&bus->mdio_lock);
 
@@ -332,6 +319,20 @@ ar8xxx_phy_mmd_write(struct ar8xxx_priv *priv, int phy_addr, u16 addr, u16 data)
        mutex_unlock(&bus->mdio_lock);
 }
 
+u16
+ar8xxx_phy_mmd_read(struct ar8xxx_priv *priv, int phy_addr, u16 addr)
+{
+       struct mii_bus *bus = priv->mii_bus;
+       u16 data;
+
+       mutex_lock(&bus->mdio_lock);
+       bus->write(bus, phy_addr, MII_ATH_MMD_ADDR, addr);
+       data = bus->read(bus, phy_addr, MII_ATH_MMD_DATA);
+       mutex_unlock(&bus->mdio_lock);
+
+       return data;
+}
+
 static int
 ar8xxx_reg_wait(struct ar8xxx_priv *priv, u32 reg, u32 mask, u32 val,
                unsigned timeout)
@@ -453,6 +454,9 @@ ar8216_read_port_link(struct ar8xxx_priv *priv, int port,
        link->tx_flow = !!(status & AR8216_PORT_STATUS_TXFLOW);
        link->rx_flow = !!(status & AR8216_PORT_STATUS_RXFLOW);
 
+       if (link->aneg && link->duplex && priv->chip->read_port_eee_status)
+               link->eee = priv->chip->read_port_eee_status(priv, port);
+
        speed = (status & AR8216_PORT_STATUS_SPEED) >>
                 AR8216_PORT_STATUS_SPEED_S;
 
@@ -596,7 +600,8 @@ ar8216_atu_flush(struct ar8xxx_priv *priv)
 
        ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0);
        if (!ret)
-               ar8xxx_write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
+               ar8xxx_write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH |
+                                                  AR8216_ATU_ACTIVE);
 
        return ret;
 }
@@ -742,12 +747,11 @@ ar8236_init_globals(struct ar8xxx_priv *priv)
                   AR8316_GCTRL_MTU, 9018 + 8 + 2);
 
        /* enable cpu port to receive arp frames */
-       ar8xxx_rmw(priv, AR8216_REG_ATU_CTRL,
-                  AR8236_ATU_CTRL_RES, AR8236_ATU_CTRL_RES);
+       ar8xxx_reg_set(priv, AR8216_REG_ATU_CTRL,
+                  AR8236_ATU_CTRL_RES);
 
        /* enable cpu port to receive multicast and broadcast frames */
-       ar8xxx_rmw(priv, AR8216_REG_FLOOD_MASK,
-                  AR8236_FM_CPU_BROADCAST_EN | AR8236_FM_CPU_BCAST_FWD_EN,
+       ar8xxx_reg_set(priv, AR8216_REG_FLOOD_MASK,
                   AR8236_FM_CPU_BROADCAST_EN | AR8236_FM_CPU_BCAST_FWD_EN);
 
        /* Enable MIB counters */
@@ -958,13 +962,11 @@ ar8216_set_mirror_regs(struct ar8xxx_priv *priv)
                   AR8216_GLOBAL_CPUPORT_MIRROR_PORT,
                   (0xF << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S));
        for (port = 0; port < AR8216_NUM_PORTS; port++) {
-               ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(port),
-                          AR8216_PORT_CTRL_MIRROR_RX,
-                          0);
+               ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port),
+                          AR8216_PORT_CTRL_MIRROR_RX);
 
-               ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(port),
-                          AR8216_PORT_CTRL_MIRROR_TX,
-                          0);
+               ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port),
+                          AR8216_PORT_CTRL_MIRROR_TX);
        }
 
        /* now enable mirroring if necessary */
@@ -979,13 +981,11 @@ ar8216_set_mirror_regs(struct ar8xxx_priv *priv)
                   (priv->monitor_port << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S));
 
        if (priv->mirror_rx)
-               ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(priv->source_port),
-                          AR8216_PORT_CTRL_MIRROR_RX,
+               ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port),
                           AR8216_PORT_CTRL_MIRROR_RX);
 
        if (priv->mirror_tx)
-               ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(priv->source_port),
-                          AR8216_PORT_CTRL_MIRROR_TX,
+               ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port),
                           AR8216_PORT_CTRL_MIRROR_TX);
 }
 
@@ -1046,6 +1046,7 @@ int
 ar8xxx_sw_reset_switch(struct switch_dev *dev)
 {
        struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
+       const struct ar8xxx_chip *chip = priv->chip;
        int i;
 
        mutex_lock(&priv->reg_mutex);
@@ -1057,18 +1058,18 @@ ar8xxx_sw_reset_switch(struct switch_dev *dev)
 
        /* Configure all ports */
        for (i = 0; i < dev->ports; i++)
-               priv->chip->init_port(priv, i);
+               chip->init_port(priv, i);
 
        priv->mirror_rx = false;
        priv->mirror_tx = false;
        priv->source_port = 0;
        priv->monitor_port = 0;
 
-       priv->chip->init_globals(priv);
+       chip->init_globals(priv);
 
        mutex_unlock(&priv->reg_mutex);
 
-       return ar8xxx_sw_hw_apply(dev);
+       return chip->sw_hw_apply(dev);
 }
 
 int
@@ -1199,7 +1200,7 @@ ar8xxx_sw_get_mirror_source_port(struct switch_dev *dev,
        return 0;
 }
 
-static int
+int
 ar8xxx_sw_set_port_reset_mib(struct switch_dev *dev,
                             const struct switch_attr *attr,
                             struct switch_val *val)
@@ -1229,7 +1230,7 @@ unlock:
        return ret;
 }
 
-static int
+int
 ar8xxx_sw_get_port_mib(struct switch_dev *dev,
                       const struct switch_attr *attr,
                       struct switch_val *val)
@@ -1277,7 +1278,79 @@ unlock:
        return ret;
 }
 
-static struct switch_attr ar8xxx_sw_attr_globals[] = {
+int
+ar8xxx_sw_get_arl_table(struct switch_dev *dev,
+                       const struct switch_attr *attr,
+                       struct switch_val *val)
+{
+       struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
+       struct mii_bus *bus = priv->mii_bus;
+       const struct ar8xxx_chip *chip = priv->chip;
+       char *buf = priv->arl_buf;
+       int i, j, k, len = 0;
+       struct arl_entry *a, *a1;
+       u32 status;
+
+       if (!chip->get_arl_entry)
+               return -EOPNOTSUPP;
+
+       mutex_lock(&priv->reg_mutex);
+       mutex_lock(&bus->mdio_lock);
+
+       chip->get_arl_entry(priv, NULL, NULL, AR8XXX_ARL_INITIALIZE);
+
+       for(i = 0; i < AR8XXX_NUM_ARL_RECORDS; ++i) {
+               a = &priv->arl_table[i];
+               duplicate:
+               chip->get_arl_entry(priv, a, &status, AR8XXX_ARL_GET_NEXT);
+
+               if (!status)
+                       break;
+
+               /* avoid duplicates
+                * ARL table can include multiple valid entries
+                * per MAC, just with differing status codes
+                */
+               for (j = 0; j < i; ++j) {
+                       a1 = &priv->arl_table[j];
+                       if (a->port == a1->port && !memcmp(a->mac, a1->mac, sizeof(a->mac)))
+                               goto duplicate;
+               }
+       }
+
+       mutex_unlock(&bus->mdio_lock);
+
+       len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
+                        "address resolution table\n");
+
+       if (i == AR8XXX_NUM_ARL_RECORDS)
+               len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
+                               "Too many entries found, displaying the first %d only!\n",
+                               AR8XXX_NUM_ARL_RECORDS);
+
+       for (j = 0; j < priv->dev.ports; ++j) {
+               for (k = 0; k < i; ++k) {
+                       a = &priv->arl_table[k];
+                       if (a->port != j)
+                               continue;
+                       len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
+                                       "Port %d: MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
+                                       j,
+                                       a->mac[5], a->mac[4], a->mac[3],
+                                       a->mac[2], a->mac[1], a->mac[0]);
+               }
+       }
+
+       val->value.s = buf;
+       val->len = len;
+
+       mutex_unlock(&priv->reg_mutex);
+
+       return 0;
+}
+
+
+static const struct switch_attr ar8xxx_sw_attr_globals[] = {
        {
                .type = SWITCH_TYPE_INT,
                .name = "enable_vlan",
@@ -1324,9 +1397,16 @@ static struct switch_attr ar8xxx_sw_attr_globals[] = {
                .get = ar8xxx_sw_get_mirror_source_port,
                .max = AR8216_NUM_PORTS - 1
        },
+       {
+               .type = SWITCH_TYPE_STRING,
+               .name = "arl_table",
+               .description = "Get ARL table",
+               .set = NULL,
+               .get = ar8xxx_sw_get_arl_table,
+       },
 };
 
-struct switch_attr ar8xxx_sw_attr_port[2] = {
+const struct switch_attr ar8xxx_sw_attr_port[2] = {
        {
                .type = SWITCH_TYPE_NOVAL,
                .name = "reset_mib",
@@ -1342,7 +1422,7 @@ struct switch_attr ar8xxx_sw_attr_port[2] = {
        },
 };
 
-struct switch_attr ar8xxx_sw_attr_vlan[1] = {
+const struct switch_attr ar8xxx_sw_attr_vlan[1] = {
        {
                .type = SWITCH_TYPE_INT,
                .name = "vid",
@@ -1395,6 +1475,7 @@ static const struct ar8xxx_chip ar8216_chip = {
        .vtu_flush = ar8216_vtu_flush,
        .vtu_load_vlan = ar8216_vtu_load_vlan,
        .set_mirror_regs = ar8216_set_mirror_regs,
+       .sw_hw_apply = ar8xxx_sw_hw_apply,
 
        .num_mibs = ARRAY_SIZE(ar8216_mibs),
        .mib_decs = ar8216_mibs,
@@ -1421,6 +1502,7 @@ static const struct ar8xxx_chip ar8236_chip = {
        .vtu_flush = ar8216_vtu_flush,
        .vtu_load_vlan = ar8216_vtu_load_vlan,
        .set_mirror_regs = ar8216_set_mirror_regs,
+       .sw_hw_apply = ar8xxx_sw_hw_apply,
 
        .num_mibs = ARRAY_SIZE(ar8236_mibs),
        .mib_decs = ar8236_mibs,
@@ -1447,6 +1529,7 @@ static const struct ar8xxx_chip ar8316_chip = {
        .vtu_flush = ar8216_vtu_flush,
        .vtu_load_vlan = ar8216_vtu_load_vlan,
        .set_mirror_regs = ar8216_set_mirror_regs,
+       .sw_hw_apply = ar8xxx_sw_hw_apply,
 
        .num_mibs = ARRAY_SIZE(ar8236_mibs),
        .mib_decs = ar8236_mibs,
@@ -1690,12 +1773,46 @@ ar8xxx_phy_config_init(struct phy_device *phydev)
        return 0;
 }
 
+static bool
+ar8xxx_check_link_states(struct ar8xxx_priv *priv)
+{
+       bool link_new, changed = false;
+       u32 status;
+       int i;
+
+       mutex_lock(&priv->reg_mutex);
+
+       for (i = 0; i < priv->dev.ports; i++) {
+               status = priv->chip->read_port_status(priv, i);
+               link_new = !!(status & AR8216_PORT_STATUS_LINK_UP);
+               if (link_new == priv->link_up[i])
+                       continue;
+
+               priv->link_up[i] = link_new;
+               changed = true;
+               dev_info(&priv->phy->dev, "Port %d is %s\n",
+                        i, link_new ? "up" : "down");
+       }
+
+       if (changed)
+               priv->chip->atu_flush(priv);
+
+       mutex_unlock(&priv->reg_mutex);
+
+       return changed;
+}
+
 static int
 ar8xxx_phy_read_status(struct phy_device *phydev)
 {
        struct ar8xxx_priv *priv = phydev->priv;
        struct switch_port_link link;
-       int ret;
+
+       /* check for link changes and flush ATU
+        * if a change was detected
+        */
+       if (phydev->state == PHY_CHANGELINK)
+               ar8xxx_check_link_states(priv);
 
        if (phydev->addr != 0)
                return genphy_read_status(phydev);
@@ -1720,16 +1837,11 @@ ar8xxx_phy_read_status(struct phy_device *phydev)
        }
        phydev->duplex = link.duplex ? DUPLEX_FULL : DUPLEX_HALF;
 
-       /* flush the address translation unit */
-       mutex_lock(&priv->reg_mutex);
-       ret = priv->chip->atu_flush(priv);
-       mutex_unlock(&priv->reg_mutex);
-
        phydev->state = PHY_RUNNING;
        netif_carrier_on(phydev->attached_dev);
        phydev->adjust_link(phydev->attached_dev);
 
-       return ret;
+       return 0;
 }
 
 static int