X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fnet%2Fnatsemi.c;h=c6172a77a6d793de039fee2db63b374551f6d980;hb=1ba73b99c34c31ea18b44dcf161c6e1f2838e0fa;hp=ffa0afd2eddcd372c614a6724be4cb3444e85f28;hpb=bdbf77d6707a52bdeff223d0a60df12d086d21d7;p=powerpc.git

diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c
index ffa0afd2ed..c6172a77a6 100644
--- a/drivers/net/natsemi.c
+++ b/drivers/net/natsemi.c
@@ -244,6 +244,9 @@ enum {
 	MII_EN_SCRM	= 0x0004,	/* enable scrambler (tp) */
 };
 
+enum {
+	NATSEMI_FLAG_IGNORE_PHY		= 0x1,
+};
 
 /* array of board data directly indexed by pci_tbl[x].driver_data */
 static const struct {
@@ -251,11 +254,13 @@ static const struct {
 	unsigned long flags;
 	unsigned int eeprom_size;
 } natsemi_pci_info[] __devinitdata = {
+	{ "Aculab E1/T1 PMXc cPCI carrier card", NATSEMI_FLAG_IGNORE_PHY, 128 },
 	{ "NatSemi DP8381[56]", 0, 24 },
 };
 
 static const struct pci_device_id natsemi_pci_tbl[] __devinitdata = {
-	{ PCI_VENDOR_ID_NS, 0x0020, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ PCI_VENDOR_ID_NS, 0x0020, 0x12d9,     0x000c,     0, 0, 0 },
+	{ PCI_VENDOR_ID_NS, 0x0020, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 	{ }	/* terminate list */
 };
 MODULE_DEVICE_TABLE(pci, natsemi_pci_tbl);
@@ -568,6 +573,8 @@ struct netdev_private {
 	u32 intr_status;
 	/* Do not touch the nic registers */
 	int hands_off;
+	/* Don't pay attention to the reported link state. */
+	int ignore_phy;
 	/* external phy that is used: only valid if dev->if_port != PORT_TP */
 	int mii;
 	int phy_addr_external;
@@ -696,7 +703,10 @@ static void __devinit natsemi_init_media (struct net_device *dev)
 	struct netdev_private *np = netdev_priv(dev);
 	u32 tmp;
 
-	netif_carrier_off(dev);
+	if (np->ignore_phy)
+		netif_carrier_on(dev);
+	else
+		netif_carrier_off(dev);
 
 	/* get the initial settings from hardware */
 	tmp            = mdio_read(dev, MII_BMCR);
@@ -806,8 +816,13 @@ static int __devinit natsemi_probe1 (struct pci_dev *pdev,
 	np->hands_off = 0;
 	np->intr_status = 0;
 	np->eeprom_size = natsemi_pci_info[chip_idx].eeprom_size;
+	if (natsemi_pci_info[chip_idx].flags & NATSEMI_FLAG_IGNORE_PHY)
+		np->ignore_phy = 1;
+	else
+		np->ignore_phy = 0;
 
 	/* Initial port:
+	 * - If configured to ignore the PHY set up for external.
 	 * - If the nic was configured to use an external phy and if find_mii
 	 *   finds a phy: use external port, first phy that replies.
 	 * - Otherwise: internal port.
@@ -815,7 +830,7 @@ static int __devinit natsemi_probe1 (struct pci_dev *pdev,
 	 * The address would be used to access a phy over the mii bus, but
 	 * the internal phy is accessed through mapped registers.
 	 */
-	if (readl(ioaddr + ChipConfig) & CfgExtPhy)
+	if (np->ignore_phy || readl(ioaddr + ChipConfig) & CfgExtPhy)
 		dev->if_port = PORT_MII;
 	else
 		dev->if_port = PORT_TP;
@@ -825,7 +840,9 @@ static int __devinit natsemi_probe1 (struct pci_dev *pdev,
 
 	if (dev->if_port != PORT_TP) {
 		np->phy_addr_external = find_mii(dev);
-		if (np->phy_addr_external == PHY_ADDR_NONE) {
+		/* If we're ignoring the PHY it doesn't matter if we can't
+		 * find one. */
+		if (!np->ignore_phy && np->phy_addr_external == PHY_ADDR_NONE) {
 			dev->if_port = PORT_TP;
 			np->phy_addr_external = PHY_ADDR_INTERNAL;
 		}
@@ -891,6 +908,8 @@ static int __devinit natsemi_probe1 (struct pci_dev *pdev,
 		printk("%02x, IRQ %d", dev->dev_addr[i], irq);
 		if (dev->if_port == PORT_TP)
 			printk(", port TP.\n");
+		else if (np->ignore_phy)
+			printk(", port MII, ignoring PHY\n");
 		else
 			printk(", port MII, phy ad %d.\n", np->phy_addr_external);
 	}
@@ -1571,9 +1590,13 @@ static void check_link(struct net_device *dev)
 {
 	struct netdev_private *np = netdev_priv(dev);
 	void __iomem * ioaddr = ns_ioaddr(dev);
-	int duplex;
+	int duplex = np->duplex;
 	u16 bmsr;
 
+	/* If we are ignoring the PHY then don't try reading it. */
+	if (np->ignore_phy)
+		goto propagate_state;
+
 	/* The link status field is latched: it remains low after a temporary
 	 * link failure until it's read. We need the current link status,
 	 * thus read twice.
@@ -1585,7 +1608,7 @@ static void check_link(struct net_device *dev)
 		if (netif_carrier_ok(dev)) {
 			if (netif_msg_link(np))
 				printk(KERN_NOTICE "%s: link down.\n",
-					dev->name);
+				       dev->name);
 			netif_carrier_off(dev);
 			undo_cable_magic(dev);
 		}
@@ -1609,6 +1632,7 @@ static void check_link(struct net_device *dev)
 			duplex = 1;
 	}
 
+propagate_state:
 	/* if duplex is set then bit 28 must be set, too */
 	if (duplex ^ !!(np->rx_config & RxAcceptTx)) {
 		if (netif_msg_link(np))
@@ -2000,6 +2024,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
 	struct netdev_private *np = netdev_priv(dev);
 	void __iomem * ioaddr = ns_ioaddr(dev);
 	unsigned entry;
+	unsigned long flags;
 
 	/* Note: Ordering is important here, set the field with the
 	   "ownership" bit last, and only then increment cur_tx. */
@@ -2013,7 +2038,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
 
 	np->tx_ring[entry].addr = cpu_to_le32(np->tx_dma[entry]);
 
-	spin_lock_irq(&np->lock);
+	spin_lock_irqsave(&np->lock, flags);
 
 	if (!np->hands_off) {
 		np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn | skb->len);
@@ -2032,7 +2057,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
 		dev_kfree_skb_irq(skb);
 		np->stats.tx_dropped++;
 	}
-	spin_unlock_irq(&np->lock);
+	spin_unlock_irqrestore(&np->lock, flags);
 
 	dev->trans_start = jiffies;
 
@@ -2198,6 +2223,8 @@ static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do)
 		pkt_len = (desc_status & DescSizeMask) - 4;
 		if ((desc_status&(DescMore|DescPktOK|DescRxLong)) != DescPktOK){
 			if (desc_status & DescMore) {
+				unsigned long flags;
+
 				if (netif_msg_rx_err(np))
 					printk(KERN_WARNING
 						"%s: Oversized(?) Ethernet "
@@ -2212,12 +2239,12 @@ static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do)
 				 * reset procedure documented in
 				 * AN-1287. */
 
-				spin_lock_irq(&np->lock);
+				spin_lock_irqsave(&np->lock, flags);
 				reset_rx(dev);
 				reinit_rx(dev);
 				writel(np->ring_dma, ioaddr + RxRingPtr);
 				check_link(dev);
-				spin_unlock_irq(&np->lock);
+				spin_unlock_irqrestore(&np->lock, flags);
 
 				/* We'll enable RX on exit from this
 				 * function. */
@@ -2372,8 +2399,19 @@ static struct net_device_stats *get_stats(struct net_device *dev)
 #ifdef CONFIG_NET_POLL_CONTROLLER
 static void natsemi_poll_controller(struct net_device *dev)
 {
+	struct netdev_private *np = netdev_priv(dev);
+
 	disable_irq(dev->irq);
-	intr_handler(dev->irq, dev);
+
+	/*
+	 * A real interrupt might have already reached us at this point
+	 * but NAPI might still haven't called us back.  As the interrupt
+	 * status register is cleared by reading, we should prevent an
+	 * interrupt loss in this case...
+	 */
+	if (!np->intr_status)
+		intr_handler(dev->irq, dev);
+
 	enable_irq(dev->irq);
 }
 #endif
@@ -2818,6 +2856,15 @@ static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
 		return -EINVAL;
 	}
 
+	/*
+	 * If we're ignoring the PHY then autoneg and the internal
+	 * transciever are really not going to work so don't let the
+	 * user select them.
+	 */
+	if (np->ignore_phy && (ecmd->autoneg == AUTONEG_ENABLE ||
+			       ecmd->port == PORT_TP))
+		return -EINVAL;
+
 	/*
 	 * maxtxpkt, maxrxpkt: ignored for now.
 	 *