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From 7fa63fdde703aaabaa7199ae879219737a98a3f3 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Fri, 6 Jan 2012 12:24:18 +0100
Subject: [PATCH] NET: bcm63xx_enet: move phy_(dis)connect into probe/remove
Only connect/disconnect the phy during probe and remove, not during any
open/close. The phy seldom changes during the runtime, and disconnecting
the phy during close will prevent it from keeping any configuration over
a down/up cycle.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 158 +++++++++++++--------------
1 file changed, 78 insertions(+), 80 deletions(-)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -892,10 +892,8 @@ static int bcm_enet_open(struct net_devi
struct bcm_enet_priv *priv;
struct sockaddr addr;
struct device *kdev;
- struct phy_device *phydev;
int i, ret;
unsigned int size;
- char phy_id[MII_BUS_ID_SIZE + 3];
void *p;
u32 val;
@@ -903,31 +901,10 @@ static int bcm_enet_open(struct net_devi
kdev = &priv->pdev->dev;
if (priv->has_phy) {
- /* connect to PHY */
- snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
- priv->mii_bus->id, priv->phy_id);
-
- phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link,
- PHY_INTERFACE_MODE_MII);
-
- if (IS_ERR(phydev)) {
- dev_err(kdev, "could not attach to PHY\n");
- return PTR_ERR(phydev);
- }
-
- /* mask with MAC supported features */
- phy_support_sym_pause(phydev);
- phy_set_max_speed(phydev, SPEED_100);
- phy_set_sym_pause(phydev, priv->pause_rx, priv->pause_rx,
- priv->pause_auto);
-
- phy_attached_info(phydev);
-
+ /* Reset state */
priv->old_link = 0;
priv->old_duplex = -1;
priv->old_pause = -1;
- } else {
- phydev = NULL;
}
/* mask all interrupts and request them */
@@ -937,7 +914,7 @@ static int bcm_enet_open(struct net_devi
ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev);
if (ret)
- goto out_phy_disconnect;
+ return ret;
ret = request_irq(priv->irq_rx, bcm_enet_isr_dma, 0,
dev->name, dev);
@@ -1099,8 +1076,8 @@ static int bcm_enet_open(struct net_devi
enet_dmac_writel(priv, priv->dma_chan_int_mask,
ENETDMAC_IRMASK, priv->tx_chan);
- if (phydev)
- phy_start(phydev);
+ if (priv->has_phy)
+ phy_start(dev->phydev);
else
bcm_enet_adjust_link(dev);
@@ -1130,10 +1107,6 @@ out_freeirq_rx:
out_freeirq:
free_irq(dev->irq, dev);
-out_phy_disconnect:
- if (phydev)
- phy_disconnect(phydev);
-
return ret;
}
@@ -1226,10 +1199,6 @@ static int bcm_enet_stop(struct net_devi
free_irq(priv->irq_rx, dev);
free_irq(dev->irq, dev);
- /* release phy */
- if (priv->has_phy)
- phy_disconnect(dev->phydev);
-
/* reset BQL after forced tx reclaim to not kernel panic */
netdev_reset_queue(dev);
@@ -1797,14 +1766,47 @@ static int bcm_enet_probe(struct platfor
/* do minimal hardware init to be able to probe mii bus */
bcm_enet_hw_preinit(priv);
+ spin_lock_init(&priv->rx_lock);
+
+ /* init rx timeout (used for oom) */
+ timer_setup(&priv->rx_timeout, bcm_enet_refill_rx_timer, 0);
+
+ /* init the mib update lock&work */
+ mutex_init(&priv->mib_update_lock);
+ INIT_WORK(&priv->mib_update_task, bcm_enet_update_mib_counters_defer);
+
+ /* zero mib counters */
+ for (i = 0; i < ENET_MIB_REG_COUNT; i++)
+ enet_writel(priv, 0, ENET_MIB_REG(i));
+
+ /* register netdevice */
+ dev->netdev_ops = &bcm_enet_ops;
+ netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16);
+
+ dev->ethtool_ops = &bcm_enet_ethtool_ops;
+ /* MTU range: 46 - 2028 */
+ dev->min_mtu = ETH_ZLEN - ETH_HLEN;
+ dev->max_mtu = BCMENET_MAX_MTU - VLAN_ETH_HLEN;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ ret = register_netdev(dev);
+ if (ret)
+ goto out_uninit_hw;
+
+ netif_carrier_off(dev);
+ platform_set_drvdata(pdev, dev);
+ priv->pdev = pdev;
+ priv->net_dev = dev;
/* MII bus registration */
if (priv->has_phy) {
+ struct phy_device *phydev;
+ char phy_id[MII_BUS_ID_SIZE + 3];
priv->mii_bus = mdiobus_alloc();
if (!priv->mii_bus) {
ret = -ENOMEM;
- goto out_uninit_hw;
+ goto out_unregister_netdev;
}
bus = priv->mii_bus;
@@ -1828,6 +1830,26 @@ static int bcm_enet_probe(struct platfor
dev_err(&pdev->dev, "unable to register mdio bus\n");
goto out_free_mdio;
}
+
+ /* connect to PHY */
+ snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ priv->mii_bus->id, priv->phy_id);
+
+ phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link,
+ PHY_INTERFACE_MODE_MII);
+
+ if (IS_ERR(phydev)) {
+ dev_err(&pdev->dev, "could not attach to PHY\n");
+ goto out_unregister_mdio;
+ }
+
+ /* mask with MAC supported features */
+ phy_support_sym_pause(phydev);
+ phy_set_max_speed(phydev, SPEED_100);
+ phy_set_sym_pause(phydev, priv->pause_rx, priv->pause_rx,
+ priv->pause_auto);
+
+ phy_attached_info(phydev);
} else {
/* run platform code to initialize PHY device */
@@ -1835,45 +1857,16 @@ static int bcm_enet_probe(struct platfor
pd->mii_config(dev, 1, bcm_enet_mdio_read_mii,
bcm_enet_mdio_write_mii)) {
dev_err(&pdev->dev, "unable to configure mdio bus\n");
- goto out_uninit_hw;
+ goto out_unregister_netdev;
}
}
- spin_lock_init(&priv->rx_lock);
-
- /* init rx timeout (used for oom) */
- timer_setup(&priv->rx_timeout, bcm_enet_refill_rx_timer, 0);
-
- /* init the mib update lock&work */
- mutex_init(&priv->mib_update_lock);
- INIT_WORK(&priv->mib_update_task, bcm_enet_update_mib_counters_defer);
-
- /* zero mib counters */
- for (i = 0; i < ENET_MIB_REG_COUNT; i++)
- enet_writel(priv, 0, ENET_MIB_REG(i));
-
- /* register netdevice */
- dev->netdev_ops = &bcm_enet_ops;
- netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16);
-
- dev->ethtool_ops = &bcm_enet_ethtool_ops;
- /* MTU range: 46 - 2028 */
- dev->min_mtu = ETH_ZLEN - ETH_HLEN;
- dev->max_mtu = BCMENET_MAX_MTU - VLAN_ETH_HLEN;
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- ret = register_netdev(dev);
- if (ret)
- goto out_unregister_mdio;
-
- netif_carrier_off(dev);
- platform_set_drvdata(pdev, dev);
- priv->pdev = pdev;
- priv->net_dev = dev;
-
return 0;
out_unregister_mdio:
+ if (dev->phydev)
+ phy_disconnect(dev->phydev);
+
if (priv->mii_bus)
mdiobus_unregister(priv->mii_bus);
@@ -1881,6 +1874,9 @@ out_free_mdio:
if (priv->mii_bus)
mdiobus_free(priv->mii_bus);
+out_unregister_netdev:
+ unregister_netdev(dev);
+
out_uninit_hw:
/* turn off mdc clock */
enet_writel(priv, 0, ENET_MIISC_REG);
@@ -1911,6 +1907,7 @@ static int bcm_enet_remove(struct platfo
enet_writel(priv, 0, ENET_MIISC_REG);
if (priv->has_phy) {
+ phy_disconnect(dev->phydev);
mdiobus_unregister(priv->mii_bus);
mdiobus_free(priv->mii_bus);
} else {
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