merge upstream fixes for bcm63xx_enet

SVN-Revision: 17175

1 files changed, 439 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-2.6.30/060-bcm63xx_enet_upstream_fixes.patch b/target/linux/brcm63xx/patches-2.6.30/060-bcm63xx_enet_upstream_fixes.patch
new file mode 100644
index 0000000000..0271aa6c91
--- /dev/null
+++ b/target/linux/brcm63xx/patches-2.6.30/060-bcm63xx_enet_upstream_fixes.patch
@@ -0,0 +1,439 @@
+--- a/drivers/net/bcm63xx_enet.c	2009-07-31 22:06:20.000000000 +0200
++++ b/drivers/net/bcm63xx_enet.c	2009-08-05 10:02:28.000000000 +0200
+@@ -28,7 +28,6 @@
+ #include <linux/dma-mapping.h>
+ #include <linux/platform_device.h>
+ #include <linux/if_vlan.h>
+-#include <linux/version.h>
+ 
+ #include <bcm63xx_dev_enet.h>
+ #include "bcm63xx_enet.h"
+@@ -321,7 +320,7 @@
+ 		if (len < copybreak) {
+ 			struct sk_buff *nskb;
+ 
+-			nskb = netdev_alloc_skb(dev, len + 2);
++			nskb = netdev_alloc_skb(dev, len + NET_IP_ALIGN);
+ 			if (!nskb) {
+ 				/* forget packet, just rearm desc */
+ 				priv->stats.rx_dropped++;
+@@ -452,11 +451,7 @@
+ 
+ 	/* no more packet in rx/tx queue, remove device from poll
+ 	 * queue */
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+-	netif_rx_complete(dev, napi);
+-#else
+ 	napi_complete(napi);
+-#endif
+ 
+ 	/* restore rx/tx interrupt */
+ 	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
+@@ -508,11 +503,7 @@
+ 	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
+ 	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
+ 
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+-	netif_rx_schedule(dev, &priv->napi);
+-#else
+ 	napi_schedule(&priv->napi);
+-#endif
+ 
+ 	return IRQ_HANDLED;
+ }
+@@ -764,11 +755,11 @@
+ 		pr_info("%s: link %s", dev->name, phydev->link ?
+ 			"UP" : "DOWN");
+ 		if (phydev->link)
+-			printk(" - %d/%s - flow control %s", phydev->speed,
++			pr_cont(" - %d/%s - flow control %s", phydev->speed,
+ 			       DUPLEX_FULL == phydev->duplex ? "full" : "half",
+ 			       phydev->pause == 1 ? "rx&tx" : "off");
+ 
+-		printk("\n");
++		pr_cont("\n");
+ 	}
+ }
+ 
+@@ -782,6 +773,7 @@
+ 	priv = netdev_priv(dev);
+ 	bcm_enet_set_duplex(priv, priv->force_duplex_full);
+ 	bcm_enet_set_flow(priv, priv->pause_rx, priv->pause_tx);
++	netif_carrier_on(dev);
+ 
+ 	pr_info("%s: link forced UP - %d/%s - flow control %s/%s\n",
+ 		dev->name,
+@@ -800,21 +792,18 @@
+ 	struct sockaddr addr;
+ 	struct device *kdev;
+ 	struct phy_device *phydev;
+-	int irq_requested, i, ret;
++	int i, ret;
+ 	unsigned int size;
+-	char phy_id[BUS_ID_SIZE];
++	char phy_id[MII_BUS_ID_SIZE + 3];
+ 	void *p;
+ 	u32 val;
+ 
+ 	priv = netdev_priv(dev);
+-	priv->rx_desc_cpu = priv->tx_desc_cpu = NULL;
+-	priv->rx_skb = priv->tx_skb = NULL;
+-
+ 	kdev = &priv->pdev->dev;
+ 
+ 	if (priv->has_phy) {
+ 		/* connect to PHY */
+-		snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT,
++		snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ 			 priv->mac_id ? "1" : "0", priv->phy_id);
+ 
+ 		phydev = phy_connect(dev, phy_id, &bcm_enet_adjust_phy_link, 0,
+@@ -854,23 +843,19 @@
+ 	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
+ 	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
+ 
+-	irq_requested = 0;
+ 	ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev);
+ 	if (ret)
+-		goto out;
+-	irq_requested++;
++		goto out_phy_disconnect;
+ 
+ 	ret = request_irq(priv->irq_rx, bcm_enet_isr_dma,
+ 			  IRQF_SAMPLE_RANDOM | IRQF_DISABLED, dev->name, dev);
+ 	if (ret)
+-		goto out;
+-	irq_requested++;
++		goto out_freeirq;
+ 
+ 	ret = request_irq(priv->irq_tx, bcm_enet_isr_dma,
+ 			  IRQF_DISABLED, dev->name, dev);
+ 	if (ret)
+-		goto out;
+-	irq_requested++;
++		goto out_freeirq_rx;
+ 
+ 	/* initialize perfect match registers */
+ 	for (i = 0; i < 4; i++) {
+@@ -888,7 +873,7 @@
+ 	if (!p) {
+ 		dev_err(kdev, "cannot allocate rx ring %u\n", size);
+ 		ret = -ENOMEM;
+-		goto out;
++		goto out_freeirq_tx;
+ 	}
+ 
+ 	memset(p, 0, size);
+@@ -901,7 +886,7 @@
+ 	if (!p) {
+ 		dev_err(kdev, "cannot allocate tx ring\n");
+ 		ret = -ENOMEM;
+-		goto out;
++		goto out_free_rx_ring;
+ 	}
+ 
+ 	memset(p, 0, size);
+@@ -913,7 +898,7 @@
+ 	if (!priv->tx_skb) {
+ 		dev_err(kdev, "cannot allocate rx skb queue\n");
+ 		ret = -ENOMEM;
+-		goto out;
++		goto out_free_tx_ring;
+ 	}
+ 
+ 	priv->tx_desc_count = priv->tx_ring_size;
+@@ -927,7 +912,7 @@
+ 	if (!priv->rx_skb) {
+ 		dev_err(kdev, "cannot allocate rx skb queue\n");
+ 		ret = -ENOMEM;
+-		goto out;
++		goto out_free_tx_skb;
+ 	}
+ 
+ 	priv->rx_desc_count = 0;
+@@ -1012,13 +997,6 @@
+ 	return 0;
+ 
+ out:
+-	phy_disconnect(priv->phydev);
+-	if (irq_requested > 2)
+-		free_irq(priv->irq_tx, dev);
+-	if (irq_requested > 1)
+-		free_irq(priv->irq_rx, dev);
+-	if (irq_requested > 0)
+-		free_irq(dev->irq, dev);
+ 	for (i = 0; i < priv->rx_ring_size; i++) {
+ 		struct bcm_enet_desc *desc;
+ 
+@@ -1030,14 +1008,31 @@
+ 				 DMA_FROM_DEVICE);
+ 		kfree_skb(priv->rx_skb[i]);
+ 	}
+-	if (priv->rx_desc_cpu)
+-		dma_free_coherent(kdev, priv->rx_desc_alloc_size,
+-				  priv->rx_desc_cpu, priv->rx_desc_dma);
+-	if (priv->tx_desc_cpu)
+-		dma_free_coherent(kdev, priv->tx_desc_alloc_size,
+-				  priv->tx_desc_cpu, priv->tx_desc_dma);
+ 	kfree(priv->rx_skb);
++
++out_free_tx_skb:
+ 	kfree(priv->tx_skb);
++
++out_free_tx_ring:
++	dma_free_coherent(kdev, priv->tx_desc_alloc_size,
++			  priv->tx_desc_cpu, priv->tx_desc_dma);
++
++out_free_rx_ring:
++	dma_free_coherent(kdev, priv->rx_desc_alloc_size,
++			  priv->rx_desc_cpu, priv->rx_desc_dma);
++
++out_freeirq_tx:
++	free_irq(priv->irq_tx, dev);
++
++out_freeirq_rx:
++	free_irq(priv->irq_rx, dev);
++
++out_freeirq:
++	free_irq(dev->irq, dev);
++
++out_phy_disconnect:
++	phy_disconnect(priv->phydev);
++
+ 	return ret;
+ }
+ 
+@@ -1606,6 +1601,20 @@
+ 	enet_writel(priv, val, ENET_MIBCTL_REG);
+ }
+ 
++static const struct net_device_ops bcm_enet_ops = {
++	.ndo_open		= bcm_enet_open,
++	.ndo_stop		= bcm_enet_stop,
++	.ndo_start_xmit		= bcm_enet_start_xmit,
++	.ndo_get_stats		= bcm_enet_get_stats,
++	.ndo_set_mac_address	= bcm_enet_set_mac_address,
++	.ndo_set_multicast_list = bcm_enet_set_multicast_list,
++	.ndo_do_ioctl		= bcm_enet_ioctl,
++	.ndo_change_mtu		= bcm_enet_change_mtu,
++#ifdef CONFIG_NET_POLL_CONTROLLER
++	.ndo_poll_controller = bcm_enet_netpoll,
++#endif
++};
++
+ /*
+  * allocate netdevice, request register memory and register device.
+  */
+@@ -1618,15 +1627,13 @@
+ 	struct mii_bus *bus;
+ 	const char *clk_name;
+ 	unsigned int iomem_size;
+-	int i, ret, mdio_registered, mem_requested;
++	int i, ret;
+ 
+ 	/* stop if shared driver failed, assume driver->probe will be
+ 	 * called in the same order we register devices (correct ?) */
+ 	if (!bcm_enet_shared_base)
+ 		return -ENODEV;
+ 
+-	mdio_registered = mem_requested = 0;
+-
+ 	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ 	res_irq_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+@@ -1648,14 +1655,13 @@
+ 	iomem_size = res_mem->end - res_mem->start + 1;
+ 	if (!request_mem_region(res_mem->start, iomem_size, "bcm63xx_enet")) {
+ 		ret = -EBUSY;
+-		goto err;
++		goto out;
+ 	}
+-	mem_requested = 1;
+ 
+ 	priv->base = ioremap(res_mem->start, iomem_size);
+ 	if (priv->base == NULL) {
+ 		ret = -ENOMEM;
+-		goto err;
++		goto out_release_mem;
+ 	}
+ 	dev->irq = priv->irq = res_irq->start;
+ 	priv->irq_rx = res_irq_rx->start;
+@@ -1676,8 +1682,7 @@
+ 	priv->mac_clk = clk_get(&pdev->dev, clk_name);
+ 	if (IS_ERR(priv->mac_clk)) {
+ 		ret = PTR_ERR(priv->mac_clk);
+-		priv->mac_clk = NULL;
+-		goto err;
++		goto out_unmap;
+ 	}
+ 	clk_enable(priv->mac_clk);
+ 
+@@ -1706,7 +1711,7 @@
+ 		if (IS_ERR(priv->phy_clk)) {
+ 			ret = PTR_ERR(priv->phy_clk);
+ 			priv->phy_clk = NULL;
+-			goto err;
++			goto out_put_clk_mac;
+ 		}
+ 		clk_enable(priv->phy_clk);
+ 	}
+@@ -1716,13 +1721,16 @@
+ 
+ 	/* MII bus registration */
+ 	if (priv->has_phy) {
+-		bus = &priv->mii_bus;
++
++		priv->mii_bus = mdiobus_alloc();
++		if (!priv->mii_bus) {
++			ret = -ENOMEM;
++			goto out_uninit_hw;
++		}
++
++		bus = priv->mii_bus;
+ 		bus->name = "bcm63xx_enet MII bus";
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+-		bus->dev = &pdev->dev;
+-#else
+ 		bus->parent = &pdev->dev;
+-#endif
+ 		bus->priv = priv;
+ 		bus->read = bcm_enet_mdio_read_phylib;
+ 		bus->write = bcm_enet_mdio_write_phylib;
+@@ -1736,7 +1744,7 @@
+ 		bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
+ 		if (!bus->irq) {
+ 			ret = -ENOMEM;
+-			goto err;
++			goto out_free_mdio;
+ 		}
+ 
+ 		if (priv->has_phy_interrupt)
+@@ -1747,9 +1755,8 @@
+ 		ret = mdiobus_register(bus);
+ 		if (ret) {
+ 			dev_err(&pdev->dev, "unable to register mdio bus\n");
+-			goto err;
++			goto out_free_mdio;
+ 		}
+-		mdio_registered = 1;
+ 	} else {
+ 
+ 		/* run platform code to initialize PHY device */
+@@ -1757,7 +1764,7 @@
+ 		    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 err;
++			goto out_uninit_hw;
+ 		}
+ 	}
+ 
+@@ -1777,51 +1784,50 @@
+ 		enet_writel(priv, 0, ENET_MIB_REG(i));
+ 
+ 	/* register netdevice */
+-	dev->open = bcm_enet_open;
+-	dev->stop = bcm_enet_stop;
+-	dev->hard_start_xmit = bcm_enet_start_xmit;
+-	dev->get_stats = bcm_enet_get_stats;
+-	dev->set_mac_address = bcm_enet_set_mac_address;
+-	dev->set_multicast_list = bcm_enet_set_multicast_list;
++	dev->netdev_ops = &bcm_enet_ops;
+ 	netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16);
+-	dev->do_ioctl = bcm_enet_ioctl;
+-#ifdef CONFIG_NET_POLL_CONTROLLER
+-	dev->poll_controller = bcm_enet_netpoll;
+-#endif
+-	dev->change_mtu	= bcm_enet_change_mtu;
+ 
+ 	SET_ETHTOOL_OPS(dev, &bcm_enet_ethtool_ops);
+-	SET_NETDEV_DEV(dev, &pdev->dev);
+ 
+ 	ret = register_netdev(dev);
+ 	if (ret)
+-		goto err;
++		goto out_unregister_mdio;
+ 
++	netif_carrier_off(dev);
+ 	platform_set_drvdata(pdev, dev);
+ 	priv->pdev = pdev;
+ 	priv->net_dev = dev;
++	SET_NETDEV_DEV(dev, &pdev->dev);
+ 
+ 	return 0;
+ 
+-err:
+-	if (mem_requested)
+-		release_mem_region(res_mem->start, iomem_size);
+-	if (mdio_registered)
+-		mdiobus_unregister(&priv->mii_bus);
+-	kfree(priv->mii_bus.irq);
+-	if (priv->mac_clk) {
+-		clk_disable(priv->mac_clk);
+-		clk_put(priv->mac_clk);
++out_unregister_mdio:
++	if (priv->mii_bus) {
++		mdiobus_unregister(priv->mii_bus);
++		kfree(priv->mii_bus->irq);
+ 	}
++
++out_free_mdio:
++	if (priv->mii_bus)
++		mdiobus_free(priv->mii_bus);
++
++out_uninit_hw:
++	/* turn off mdc clock */
++	enet_writel(priv, 0, ENET_MIISC_REG);
+ 	if (priv->phy_clk) {
+ 		clk_disable(priv->phy_clk);
+ 		clk_put(priv->phy_clk);
+ 	}
+-	if (priv->base) {
+-		/* turn off mdc clock */
+-		enet_writel(priv, 0, ENET_MIISC_REG);
+-		iounmap(priv->base);
+-	}
++
++out_put_clk_mac:
++	clk_disable(priv->mac_clk);
++	clk_put(priv->mac_clk);
++
++out_unmap:
++	iounmap(priv->base);
++
++out_release_mem:
++	release_mem_region(res_mem->start, iomem_size);
+ out:
+ 	free_netdev(dev);
+ 	return ret;
+@@ -1846,8 +1852,9 @@
+ 	enet_writel(priv, 0, ENET_MIISC_REG);
+ 
+ 	if (priv->has_phy) {
+-		mdiobus_unregister(&priv->mii_bus);
+-		kfree(priv->mii_bus.irq);
++		mdiobus_unregister(priv->mii_bus);
++		kfree(priv->mii_bus->irq);
++		mdiobus_free(priv->mii_bus);
+ 	} else {
+ 		struct bcm63xx_enet_platform_data *pd;
+ 
+@@ -1870,7 +1877,6 @@
+ 	clk_disable(priv->mac_clk);
+ 	clk_put(priv->mac_clk);
+ 
+-	platform_set_drvdata(pdev, NULL);
+ 	free_netdev(dev);
+ 	return 0;
+ }
+--- a/drivers/net/bcm63xx_enet.h	2009-06-07 11:25:51.000000000 +0200
++++ b/drivers/net/bcm63xx_enet.h	2009-08-05 10:02:28.000000000 +0200
+@@ -258,7 +258,7 @@
+ 	int phy_interrupt;
+ 
+ 	/* used when a phy is connected (phylib used) */
+-	struct mii_bus mii_bus;
++	struct mii_bus *mii_bus;
+ 	struct phy_device *phydev;
+ 	int old_link;
+ 	int old_duplex;