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swconfig: fix lock imbalance in unregister_switch()
[openwrt.git] / target / linux / generic-2.6 / files / drivers / net / phy / rtl8306.c
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/rtl8306.c b/target/linux/generic-2.6/files/drivers/net/phy/rtl8306.c
index 259ff50..901b5b2 100644 (file)
--- a/target/linux/generic-2.6/files/drivers/net/phy/rtl8306.c
+++ b/target/linux/generic-2.6/files/drivers/net/phy/rtl8306.c
@@ -46,18 +46,22 @@
 
 #define RTL8306_MAGIC  0x8306
 
+static LIST_HEAD(phydevs);
+
 struct rtl_priv {
+       struct list_head list;
        struct switch_dev dev;
        int page;
        int type;
        int do_cpu;
        struct mii_bus *bus;
        char hwname[sizeof(RTL_NAME_UNKNOWN)];
+};
 
-       /* temporary register saves for port operations */
-       int tmp_speed;
-       int tmp_nway;
-       int tmp_duplex;
+struct rtl_phyregs {
+       int nway;
+       int speed;
+       int duplex;
 };
 
 #define to_rtl(_dev) container_of(_dev, struct rtl_priv, dev)
@@ -157,6 +161,7 @@ enum rtl_regidx {
        RTL_REG_PORT##id##_LINK, \
        RTL_REG_PORT##id##_SPEED, \
        RTL_REG_PORT##id##_NWAY, \
+       RTL_REG_PORT##id##_NRESTART, \
        RTL_REG_PORT##id##_DUPLEX, \
        RTL_REG_PORT##id##_RXEN, \
        RTL_REG_PORT##id##_TXEN
@@ -217,6 +222,7 @@ static const struct rtl_reg rtl_regs[] = {
 #define REG_PORT_SETTING(port, phy) \
        [RTL_REG_PORT##port##_SPEED] = { 0, phy, 0, 1, 13, 0 }, \
        [RTL_REG_PORT##port##_NWAY] = { 0, phy, 0, 1, 12, 0 }, \
+       [RTL_REG_PORT##port##_NRESTART] = { 0, phy, 0, 1, 9, 0 }, \
        [RTL_REG_PORT##port##_DUPLEX] = { 0, phy, 0, 1, 8, 0 }, \
        [RTL_REG_PORT##port##_TXEN] = { 0, phy, 24, 1, 11, 0 }, \
        [RTL_REG_PORT##port##_RXEN] = { 0, phy, 24, 1, 10, 0 }, \
@@ -355,23 +361,19 @@ rtl_set(struct switch_dev *dev, enum rtl_regidx s, unsigned int val)
 }
 
 static void
-rtl_phy_save(struct switch_dev *dev, int port)
+rtl_phy_save(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
 {
-       struct rtl_priv *priv = to_rtl(dev);
-
-       priv->tmp_nway = rtl_get(dev, RTL_PORT_REG(port, NWAY));
-       priv->tmp_speed = rtl_get(dev, RTL_PORT_REG(port, SPEED));
-       priv->tmp_duplex = rtl_get(dev, RTL_PORT_REG(port, DUPLEX));
+       regs->nway = rtl_get(dev, RTL_PORT_REG(port, NWAY));
+       regs->speed = rtl_get(dev, RTL_PORT_REG(port, SPEED));
+       regs->duplex = rtl_get(dev, RTL_PORT_REG(port, DUPLEX));
 }
 
 static void
-rtl_phy_restore(struct switch_dev *dev, int port)
+rtl_phy_restore(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
 {
-       struct rtl_priv *priv = to_rtl(dev);
-
-       rtl_set(dev, RTL_PORT_REG(port, NWAY), priv->tmp_nway);
-       rtl_set(dev, RTL_PORT_REG(port, SPEED), priv->tmp_speed);
-       rtl_set(dev, RTL_PORT_REG(port, DUPLEX), priv->tmp_duplex);
+       rtl_set(dev, RTL_PORT_REG(port, NWAY), regs->nway);
+       rtl_set(dev, RTL_PORT_REG(port, SPEED), regs->speed);
+       rtl_set(dev, RTL_PORT_REG(port, DUPLEX), regs->duplex);
 }
 
 static void
@@ -379,6 +381,12 @@ rtl_port_set_enable(struct switch_dev *dev, int port, int enabled)
 {
        rtl_set(dev, RTL_PORT_REG(port, RXEN), enabled);
        rtl_set(dev, RTL_PORT_REG(port, TXEN), enabled);
+
+       if ((port >= 5) || !enabled)
+               return;
+
+       /* restart autonegotiation if enabled */
+       rtl_set(dev, RTL_PORT_REG(port, NRESTART), 1);
 }
 
 static int
@@ -386,8 +394,9 @@ rtl_hw_apply(struct switch_dev *dev)
 {
        int i;
        int trunk_en, trunk_psel;
+       struct rtl_phyregs port5;
 
-       rtl_phy_save(dev, 5);
+       rtl_phy_save(dev, 5, &port5);
 
        /* disable rx/tx from PHYs */
        for (i = 0; i < RTL8306_NUM_PORTS - 1; i++) {
@@ -423,8 +432,7 @@ rtl_hw_apply(struct switch_dev *dev)
        /* restore trunking settings */
        rtl_set(dev, RTL_REG_EN_TRUNK, trunk_en);
        rtl_set(dev, RTL_REG_TRUNK_PORTSEL, trunk_psel);
-
-       rtl_phy_restore(dev, 5);
+       rtl_phy_restore(dev, 5, &port5);
 
        return 0;
 }
@@ -522,6 +530,7 @@ static int
 rtl_attr_set_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        int idx = attr->id + (val->port_vlan * attr->ofs);
+       struct rtl_phyregs port;
 
        if (attr->id >= ARRAY_SIZE(rtl_regs))
                return -EINVAL;
@@ -535,9 +544,9 @@ rtl_attr_set_int(struct switch_dev *dev, const struct switch_attr *attr, struct
                (rtl_regs[idx].reg == 22) &&
                (rtl_regs[idx].page == 0)) {
 
-               rtl_phy_save(dev, val->port_vlan);
+               rtl_phy_save(dev, val->port_vlan, &port);
                rtl_set(dev, idx, val->value.i);
-               rtl_phy_restore(dev, val->port_vlan);
+               rtl_phy_restore(dev, val->port_vlan, &port);
        } else {
                rtl_set(dev, idx, val->value.i);
        }
@@ -617,6 +626,7 @@ static int
 rtl_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct rtl_priv *priv = to_rtl(dev);
+       struct rtl_phyregs port;
        int en = val->value.i;
        int i;
 
@@ -629,12 +639,12 @@ rtl_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct swit
 
        for (i = 0; i < RTL8306_NUM_PORTS; i++) {
                if (i > 3)
-                       rtl_phy_save(dev, val->port_vlan);
+                       rtl_phy_save(dev, val->port_vlan, &port);
                rtl_set(dev, RTL_PORT_REG(i, NULL_VID_REPLACE), 1);
                rtl_set(dev, RTL_PORT_REG(i, VID_INSERT), (en ? (i == dev->cpu_port ? 0 : 1) : 1));
                rtl_set(dev, RTL_PORT_REG(i, TAG_INSERT), (en ? (i == dev->cpu_port ? 2 : 1) : 3));
                if (i > 3)
-                       rtl_phy_restore(dev, val->port_vlan);
+                       rtl_phy_restore(dev, val->port_vlan, &port);
        }
        rtl_set(dev, RTL_REG_VLAN_ENABLE, en);
 
@@ -706,6 +716,10 @@ rtl8306_config_init(struct phy_device *pdev)
        unsigned int chipid, chipver, chiptype;
        int err;
 
+       /* Only init the switch for the primary PHY */
+       if (pdev->addr != 0)
+               return 0;
+
        val.value.i = 1;
        memcpy(&priv->dev, &rtldev, sizeof(struct switch_dev));
        priv->do_cpu = 0;
@@ -913,6 +927,10 @@ rtl8306_fixup(struct phy_device *pdev)
        struct rtl_priv priv;
        u16 chipid;
 
+       /* Attach to primary LAN port and WAN port */
+       if (pdev->addr != 0 && pdev->addr != 4)
+               return 0;
+
        priv.page = -1;
        priv.bus = pdev->bus;
        chipid = rtl_get(&priv.dev, RTL_REG_CHIPID);
@@ -927,10 +945,21 @@ rtl8306_probe(struct phy_device *pdev)
 {
        struct rtl_priv *priv;
 
+       list_for_each_entry(priv, &phydevs, list) {
+               /*
+                * share one rtl_priv instance between virtual phy
+                * devices on the same bus
+                */
+               if (priv->bus == pdev->bus)
+                       goto found;
+       }
        priv = kzalloc(sizeof(struct rtl_priv), GFP_KERNEL);
        if (!priv)
                return -ENOMEM;
 
+       priv->bus = pdev->bus;
+
+found:
        pdev->priv = priv;
        return 0;
 }
@@ -946,15 +975,50 @@ rtl8306_remove(struct phy_device *pdev)
 static int
 rtl8306_config_aneg(struct phy_device *pdev)
 {
+       struct rtl_priv *priv = pdev->priv;
+
+       /* Only for WAN */
+       if (pdev->addr == 0)
+               return 0;
+
+       /* Restart autonegotiation */
+       rtl_set(&priv->dev, RTL_PORT_REG(4, NWAY), 1);
+       rtl_set(&priv->dev, RTL_PORT_REG(4, NRESTART), 1);
+
        return 0;
 }
 
 static int
 rtl8306_read_status(struct phy_device *pdev)
 {
-       pdev->speed = SPEED_100;
-       pdev->duplex = DUPLEX_FULL;
-       pdev->link = 1;
+       struct rtl_priv *priv = pdev->priv;
+       struct switch_dev *dev = &priv->dev;
+
+       if (pdev->addr == 4) {
+               /* WAN */
+               pdev->speed = rtl_get(dev, RTL_PORT_REG(4, SPEED)) ? SPEED_100 : SPEED_10;
+               pdev->duplex = rtl_get(dev, RTL_PORT_REG(4, DUPLEX)) ? DUPLEX_FULL : DUPLEX_HALF;
+               pdev->link = !!rtl_get(dev, RTL_PORT_REG(4, LINK));
+       } else {
+               /* LAN */
+               pdev->speed = SPEED_100;
+               pdev->duplex = DUPLEX_FULL;
+               pdev->link = 1;
+       }
+
+       /*
+        * Bypass generic PHY status read,
+        * it doesn't work with this switch
+        */
+       if (pdev->link) {
+               pdev->state = PHY_RUNNING;
+               netif_carrier_on(pdev->attached_dev);
+               pdev->adjust_link(pdev->attached_dev);
+       } else {
+               pdev->state = PHY_NOLINK;
+               netif_carrier_off(pdev->attached_dev);
+               pdev->adjust_link(pdev->attached_dev);
+       }
 
        return 0;
 }
@@ -962,6 +1026,7 @@ rtl8306_read_status(struct phy_device *pdev)
 
 static struct phy_driver rtl8306_driver = {
        .name           = "Realtek RTL8306S",
+       .flags          = PHY_HAS_MAGICANEG,
        .phy_id         = RTL8306_MAGIC,
        .phy_id_mask    = 0xffffffff,
        .features       = PHY_BASIC_FEATURES,
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