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authorDavid S. Miller <davem@davemloft.net>2015-07-31 15:41:50 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-31 15:41:50 -0700
commitef1f4364f62f0b9cee25a56e7af3915b41eea0a4 (patch)
tree29c4b47469d63ffbea013c01167a7602ecc78bb7
parent5175f7106cc55a1bcf97bf7d5ba0900017ebcef8 (diff)
parentb0734b6dc895258b74c6e7a441cb47b6b0ba3465 (diff)
downloadlinux-stericsson-ef1f4364f62f0b9cee25a56e7af3915b41eea0a4.tar.gz
Merge branch 'gianfar-wol-fixes'
Claudiu Manoil says: ==================== gianfar: wol magic packet fixes These changes were already validated as part of FSL SDK. Patch 2 fixes occasional wake-on magic packet failures during traffic, probably due to incorrect traffic stop/ device halt sequence and incorrect usage of txlock. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/freescale/gianfar.c104
-rw-r--r--drivers/net/ethernet/freescale/gianfar.h3
-rw-r--r--drivers/net/ethernet/freescale/gianfar_ethtool.c5
3 files changed, 33 insertions, 79 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index ff875028fdff..2b7610f341b0 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -565,22 +565,6 @@ static void gfar_ints_enable(struct gfar_private *priv)
}
}
-static void lock_tx_qs(struct gfar_private *priv)
-{
- int i;
-
- for (i = 0; i < priv->num_tx_queues; i++)
- spin_lock(&priv->tx_queue[i]->txlock);
-}
-
-static void unlock_tx_qs(struct gfar_private *priv)
-{
- int i;
-
- for (i = 0; i < priv->num_tx_queues; i++)
- spin_unlock(&priv->tx_queue[i]->txlock);
-}
-
static int gfar_alloc_tx_queues(struct gfar_private *priv)
{
int i;
@@ -1376,7 +1360,6 @@ static int gfar_probe(struct platform_device *ofdev)
priv->dev = &ofdev->dev;
SET_NETDEV_DEV(dev, &ofdev->dev);
- spin_lock_init(&priv->bflock);
INIT_WORK(&priv->reset_task, gfar_reset_task);
platform_set_drvdata(ofdev, priv);
@@ -1470,9 +1453,8 @@ static int gfar_probe(struct platform_device *ofdev)
goto register_fail;
}
- device_init_wakeup(&dev->dev,
- priv->device_flags &
- FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+ device_set_wakeup_capable(&dev->dev, priv->device_flags &
+ FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
/* fill out IRQ number and name fields */
for (i = 0; i < priv->num_grps; i++) {
@@ -1540,48 +1522,37 @@ static int gfar_suspend(struct device *dev)
struct gfar_private *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->ndev;
struct gfar __iomem *regs = priv->gfargrp[0].regs;
- unsigned long flags;
u32 tempval;
-
int magic_packet = priv->wol_en &&
(priv->device_flags &
FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+ if (!netif_running(ndev))
+ return 0;
+
+ disable_napi(priv);
+ netif_tx_lock(ndev);
netif_device_detach(ndev);
+ netif_tx_unlock(ndev);
- if (netif_running(ndev)) {
+ gfar_halt(priv);
- local_irq_save(flags);
- lock_tx_qs(priv);
+ if (magic_packet) {
+ /* Enable interrupt on Magic Packet */
+ gfar_write(&regs->imask, IMASK_MAG);
- gfar_halt_nodisable(priv);
+ /* Enable Magic Packet mode */
+ tempval = gfar_read(&regs->maccfg2);
+ tempval |= MACCFG2_MPEN;
+ gfar_write(&regs->maccfg2, tempval);
- /* Disable Tx, and Rx if wake-on-LAN is disabled. */
+ /* re-enable the Rx block */
tempval = gfar_read(&regs->maccfg1);
-
- tempval &= ~MACCFG1_TX_EN;
-
- if (!magic_packet)
- tempval &= ~MACCFG1_RX_EN;
-
+ tempval |= MACCFG1_RX_EN;
gfar_write(&regs->maccfg1, tempval);
- unlock_tx_qs(priv);
- local_irq_restore(flags);
-
- disable_napi(priv);
-
- if (magic_packet) {
- /* Enable interrupt on Magic Packet */
- gfar_write(&regs->imask, IMASK_MAG);
-
- /* Enable Magic Packet mode */
- tempval = gfar_read(&regs->maccfg2);
- tempval |= MACCFG2_MPEN;
- gfar_write(&regs->maccfg2, tempval);
- } else {
- phy_stop(priv->phydev);
- }
+ } else {
+ phy_stop(priv->phydev);
}
return 0;
@@ -1592,37 +1563,26 @@ static int gfar_resume(struct device *dev)
struct gfar_private *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->ndev;
struct gfar __iomem *regs = priv->gfargrp[0].regs;
- unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
(priv->device_flags &
FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
- if (!netif_running(ndev)) {
- netif_device_attach(ndev);
+ if (!netif_running(ndev))
return 0;
- }
- if (!magic_packet && priv->phydev)
+ if (magic_packet) {
+ /* Disable Magic Packet mode */
+ tempval = gfar_read(&regs->maccfg2);
+ tempval &= ~MACCFG2_MPEN;
+ gfar_write(&regs->maccfg2, tempval);
+ } else {
phy_start(priv->phydev);
-
- /* Disable Magic Packet mode, in case something
- * else woke us up.
- */
- local_irq_save(flags);
- lock_tx_qs(priv);
-
- tempval = gfar_read(&regs->maccfg2);
- tempval &= ~MACCFG2_MPEN;
- gfar_write(&regs->maccfg2, tempval);
+ }
gfar_start(priv);
- unlock_tx_qs(priv);
- local_irq_restore(flags);
-
netif_device_attach(ndev);
-
enable_napi(priv);
return 0;
@@ -2045,7 +2005,8 @@ static int register_grp_irqs(struct gfar_priv_grp *grp)
/* Install our interrupt handlers for Error,
* Transmit, and Receive
*/
- err = request_irq(gfar_irq(grp, ER)->irq, gfar_error, 0,
+ err = request_irq(gfar_irq(grp, ER)->irq, gfar_error,
+ IRQF_NO_SUSPEND,
gfar_irq(grp, ER)->name, grp);
if (err < 0) {
netif_err(priv, intr, dev, "Can't get IRQ %d\n",
@@ -2068,7 +2029,8 @@ static int register_grp_irqs(struct gfar_priv_grp *grp)
goto rx_irq_fail;
}
} else {
- err = request_irq(gfar_irq(grp, TX)->irq, gfar_interrupt, 0,
+ err = request_irq(gfar_irq(grp, TX)->irq, gfar_interrupt,
+ IRQF_NO_SUSPEND,
gfar_irq(grp, TX)->name, grp);
if (err < 0) {
netif_err(priv, intr, dev, "Can't get IRQ %d\n",
@@ -2169,8 +2131,6 @@ static int gfar_enet_open(struct net_device *dev)
if (err)
return err;
- device_set_wakeup_enable(&dev->dev, priv->wol_en);
-
return err;
}
diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h
index daa1d37de642..5545e4103368 100644
--- a/drivers/net/ethernet/freescale/gianfar.h
+++ b/drivers/net/ethernet/freescale/gianfar.h
@@ -1145,9 +1145,6 @@ struct gfar_private {
int oldduplex;
int oldlink;
- /* Bitfield update lock */
- spinlock_t bflock;
-
uint32_t msg_enable;
struct work_struct reset_task;
diff --git a/drivers/net/ethernet/freescale/gianfar_ethtool.c b/drivers/net/ethernet/freescale/gianfar_ethtool.c
index fda12fb32ec7..3c0a8f825b63 100644
--- a/drivers/net/ethernet/freescale/gianfar_ethtool.c
+++ b/drivers/net/ethernet/freescale/gianfar_ethtool.c
@@ -653,7 +653,6 @@ static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct gfar_private *priv = netdev_priv(dev);
- unsigned long flags;
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
wol->wolopts != 0)
@@ -664,9 +663,7 @@ static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
- spin_lock_irqsave(&priv->bflock, flags);
- priv->wol_en = !!device_may_wakeup(&dev->dev);
- spin_unlock_irqrestore(&priv->bflock, flags);
+ priv->wol_en = !!device_may_wakeup(&dev->dev);
return 0;
}