6 files changed, 34 insertions, 12 deletions

diff --git a/drivers/net/tulip/Kconfig b/drivers/net/tulip/Kconfig
index d913405bc393..1cc8cf4425d1 100644
--- a/drivers/net/tulip/Kconfig
+++ b/drivers/net/tulip/Kconfig
@@ -27,6 +27,18 @@ config DE2104X
 	  To compile this driver as a module, choose M here. The module will
 	  be called de2104x.
 
+config DE2104X_DSL
+	int "Descriptor Skip Length in 32 bit longwords"
+	depends on DE2104X
+	range 0 31
+	default 0
+	help
+	  Setting this value allows to align ring buffer descriptors into their
+	  own cache lines. Value of 4 corresponds to the typical 32 byte line
+	  (the descriptor is 16 bytes). This is necessary on systems that lack
+	  cache coherence, an example is PowerMac 5500. Otherwise 0 is safe.
+	  Default is 0, and range is 0 to 31.
+
 config TULIP
 	tristate "DECchip Tulip (dc2114x) PCI support"
 	depends on PCI
diff --git a/drivers/net/tulip/de2104x.c b/drivers/net/tulip/de2104x.c
index d4c5ecc51f77..81f054dbb88d 100644
--- a/drivers/net/tulip/de2104x.c
+++ b/drivers/net/tulip/de2104x.c
@@ -82,6 +82,13 @@ MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copi
 				 NETIF_MSG_RX_ERR	| \
 				 NETIF_MSG_TX_ERR)
 
+/* Descriptor skip length in 32 bit longwords. */
+#ifndef CONFIG_DE2104X_DSL
+#define DSL			0
+#else
+#define DSL			CONFIG_DE2104X_DSL
+#endif
+
 #define DE_RX_RING_SIZE		64
 #define DE_TX_RING_SIZE		64
 #define DE_RING_BYTES		\
@@ -153,6 +160,7 @@ enum {
 	CmdReset		= (1 << 0),
 	CacheAlign16		= 0x00008000,
 	BurstLen4		= 0x00000400,
+	DescSkipLen		= (DSL << 2),
 
 	/* Rx/TxPoll bits */
 	NormalTxPoll		= (1 << 0),
@@ -246,7 +254,7 @@ static const u32 de_intr_mask =
  * Set the programmable burst length to 4 longwords for all:
  * DMA errors result without these values. Cache align 16 long.
  */
-static const u32 de_bus_mode = CacheAlign16 | BurstLen4;
+static const u32 de_bus_mode = CacheAlign16 | BurstLen4 | DescSkipLen;
 
 struct de_srom_media_block {
 	u8			opts;
@@ -266,6 +274,9 @@ struct de_desc {
 	__le32			opts2;
 	__le32			addr1;
 	__le32			addr2;
+#if DSL
+	__le32			skip[DSL];
+#endif
 };
 
 struct media_info {
@@ -601,7 +612,7 @@ static int de_start_xmit (struct sk_buff *skb, struct net_device *dev)
 	if (tx_free == 0) {
 		netif_stop_queue(dev);
 		spin_unlock_irq(&de->lock);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	tx_free--;
 
diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c
index f9491bd787d1..eb72d2e9ab3d 100644
--- a/drivers/net/tulip/de4x5.c
+++ b/drivers/net/tulip/de4x5.c
@@ -1099,7 +1099,7 @@ de4x5_hw_init(struct net_device *dev, u_long iobase, struct device *gendev)
     struct pci_dev *pdev = NULL;
     int i, status=0;
 
-    gendev->driver_data = dev;
+    dev_set_drvdata(gendev, dev);
 
     /* Ensure we're not sleeping */
     if (lp->bus == EISA) {
@@ -1461,12 +1461,12 @@ de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev)
 {
     struct de4x5_private *lp = netdev_priv(dev);
     u_long iobase = dev->base_addr;
-    int status = 0;
+    int status = NETDEV_TX_OK;
     u_long flags = 0;
 
     netif_stop_queue(dev);
     if (!lp->tx_enable) {                   /* Cannot send for now */
-	return -1;
+	return NETDEV_TX_LOCKED;
     }
 
     /*
@@ -1480,7 +1480,7 @@ de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev)
 
     /* Test if cache is already locked - requeue skb if so */
     if (test_and_set_bit(0, (void *)&lp->cache.lock) && !lp->interrupt)
-	return -1;
+	return NETDEV_TX_LOCKED;
 
     /* Transmit descriptor ring full or stale skb */
     if (netif_queue_stopped(dev) || (u_long) lp->tx_skb[lp->tx_new] > 1) {
@@ -2094,7 +2094,7 @@ static int __devexit de4x5_eisa_remove (struct device *device)
 	struct net_device *dev;
 	u_long iobase;
 
-	dev = device->driver_data;
+	dev = dev_get_drvdata(device);
 	iobase = dev->base_addr;
 
 	unregister_netdev (dev);
@@ -2338,7 +2338,7 @@ static void __devexit de4x5_pci_remove (struct pci_dev *pdev)
 	struct net_device *dev;
 	u_long iobase;
 
-	dev = pdev->dev.driver_data;
+	dev = dev_get_drvdata(&pdev->dev);
 	iobase = dev->base_addr;
 
 	unregister_netdev (dev);
diff --git a/drivers/net/tulip/dmfe.c b/drivers/net/tulip/dmfe.c
index f2e669974c78..8e78f003f08f 100644
--- a/drivers/net/tulip/dmfe.c
+++ b/drivers/net/tulip/dmfe.c
@@ -686,7 +686,7 @@ static int dmfe_start_xmit(struct sk_buff *skb, struct DEVICE *dev)
 		spin_unlock_irqrestore(&db->lock, flags);
 		printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n",
 		       db->tx_queue_cnt);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Disable NIC interrupt */
diff --git a/drivers/net/tulip/uli526x.c b/drivers/net/tulip/uli526x.c
index 8761a5a5bd79..9277ce8febe4 100644
--- a/drivers/net/tulip/uli526x.c
+++ b/drivers/net/tulip/uli526x.c
@@ -591,7 +591,7 @@ static int uli526x_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
 		spin_unlock_irqrestore(&db->lock, flags);
 		printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n", db->tx_packet_cnt);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Disable NIC interrupt */
diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c
index 264e61404f34..842b1a2c40d4 100644
--- a/drivers/net/tulip/winbond-840.c
+++ b/drivers/net/tulip/winbond-840.c
@@ -1601,8 +1601,7 @@ static int w840_suspend (struct pci_dev *pdev, pm_message_t state)
 
 		/* no more hardware accesses behind this line. */
 
-		BUG_ON(np->csr6);
-		if (ioread32(ioaddr + IntrEnable)) BUG();
+		BUG_ON(np->csr6 || ioread32(ioaddr + IntrEnable));
 
 		/* pci_power_off(pdev, -1); */