1 files changed, 73 insertions, 65 deletions

diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c
index 14cbde5cf68e..5bb6bb74c40e 100644
--- a/drivers/net/ethoc.c
+++ b/drivers/net/ethoc.c
@@ -174,14 +174,15 @@ MODULE_PARM_DESC(buffer_size, "DMA buffer allocation size");
  * @iobase:	pointer to I/O memory region
  * @membase:	pointer to buffer memory region
  * @dma_alloc:	dma allocated buffer size
+ * @io_region_size:	I/O memory region size
  * @num_tx:	number of send buffers
  * @cur_tx:	last send buffer written
  * @dty_tx:	last buffer actually sent
  * @num_rx:	number of receive buffers
  * @cur_rx:	current receive buffer
+ * @vma:        pointer to array of virtual memory addresses for buffers
  * @netdev:	pointer to network device structure
  * @napi:	NAPI structure
- * @stats:	network device statistics
  * @msg_enable:	device state flags
  * @rx_lock:	receive lock
  * @lock:	device lock
@@ -193,6 +194,7 @@ struct ethoc {
 	void __iomem *iobase;
 	void __iomem *membase;
 	int dma_alloc;
+	resource_size_t io_region_size;
 
 	unsigned int num_tx;
 	unsigned int cur_tx;
@@ -201,9 +203,10 @@ struct ethoc {
 	unsigned int num_rx;
 	unsigned int cur_rx;
 
+	void** vma;
+
 	struct net_device *netdev;
 	struct napi_struct napi;
-	struct net_device_stats stats;
 	u32 msg_enable;
 
 	spinlock_t rx_lock;
@@ -283,18 +286,22 @@ static inline void ethoc_disable_rx_and_tx(struct ethoc *dev)
 	ethoc_write(dev, MODER, mode);
 }
 
-static int ethoc_init_ring(struct ethoc *dev)
+static int ethoc_init_ring(struct ethoc *dev, unsigned long mem_start)
 {
 	struct ethoc_bd bd;
 	int i;
+	void* vma;
 
 	dev->cur_tx = 0;
 	dev->dty_tx = 0;
 	dev->cur_rx = 0;
 
+	ethoc_write(dev, TX_BD_NUM, dev->num_tx);
+
 	/* setup transmission buffers */
-	bd.addr = virt_to_phys(dev->membase);
+	bd.addr = mem_start;
 	bd.stat = TX_BD_IRQ | TX_BD_CRC;
+	vma = dev->membase;
 
 	for (i = 0; i < dev->num_tx; i++) {
 		if (i == dev->num_tx - 1)
@@ -302,6 +309,9 @@ static int ethoc_init_ring(struct ethoc *dev)
 
 		ethoc_write_bd(dev, i, &bd);
 		bd.addr += ETHOC_BUFSIZ;
+
+		dev->vma[i] = vma;
+		vma += ETHOC_BUFSIZ;
 	}
 
 	bd.stat = RX_BD_EMPTY | RX_BD_IRQ;
@@ -312,6 +322,9 @@ static int ethoc_init_ring(struct ethoc *dev)
 
 		ethoc_write_bd(dev, dev->num_tx + i, &bd);
 		bd.addr += ETHOC_BUFSIZ;
+
+		dev->vma[dev->num_tx + i] = vma;
+		vma += ETHOC_BUFSIZ;
 	}
 
 	return 0;
@@ -352,39 +365,39 @@ static unsigned int ethoc_update_rx_stats(struct ethoc *dev,
 
 	if (bd->stat & RX_BD_TL) {
 		dev_err(&netdev->dev, "RX: frame too long\n");
-		dev->stats.rx_length_errors++;
+		netdev->stats.rx_length_errors++;
 		ret++;
 	}
 
 	if (bd->stat & RX_BD_SF) {
 		dev_err(&netdev->dev, "RX: frame too short\n");
-		dev->stats.rx_length_errors++;
+		netdev->stats.rx_length_errors++;
 		ret++;
 	}
 
 	if (bd->stat & RX_BD_DN) {
 		dev_err(&netdev->dev, "RX: dribble nibble\n");
-		dev->stats.rx_frame_errors++;
+		netdev->stats.rx_frame_errors++;
 	}
 
 	if (bd->stat & RX_BD_CRC) {
 		dev_err(&netdev->dev, "RX: wrong CRC\n");
-		dev->stats.rx_crc_errors++;
+		netdev->stats.rx_crc_errors++;
 		ret++;
 	}
 
 	if (bd->stat & RX_BD_OR) {
 		dev_err(&netdev->dev, "RX: overrun\n");
-		dev->stats.rx_over_errors++;
+		netdev->stats.rx_over_errors++;
 		ret++;
 	}
 
 	if (bd->stat & RX_BD_MISS)
-		dev->stats.rx_missed_errors++;
+		netdev->stats.rx_missed_errors++;
 
 	if (bd->stat & RX_BD_LC) {
 		dev_err(&netdev->dev, "RX: late collision\n");
-		dev->stats.collisions++;
+		netdev->stats.collisions++;
 		ret++;
 	}
 
@@ -413,18 +426,18 @@ static int ethoc_rx(struct net_device *dev, int limit)
 			skb = netdev_alloc_skb_ip_align(dev, size);
 
 			if (likely(skb)) {
-				void *src = phys_to_virt(bd.addr);
+				void *src = priv->vma[entry];
 				memcpy_fromio(skb_put(skb, size), src, size);
 				skb->protocol = eth_type_trans(skb, dev);
-				priv->stats.rx_packets++;
-				priv->stats.rx_bytes += size;
+				dev->stats.rx_packets++;
+				dev->stats.rx_bytes += size;
 				netif_receive_skb(skb);
 			} else {
 				if (net_ratelimit())
 					dev_warn(&dev->dev, "low on memory - "
 							"packet dropped\n");
 
-				priv->stats.rx_dropped++;
+				dev->stats.rx_dropped++;
 				break;
 			}
 		}
@@ -445,30 +458,30 @@ static int ethoc_update_tx_stats(struct ethoc *dev, struct ethoc_bd *bd)
 
 	if (bd->stat & TX_BD_LC) {
 		dev_err(&netdev->dev, "TX: late collision\n");
-		dev->stats.tx_window_errors++;
+		netdev->stats.tx_window_errors++;
 	}
 
 	if (bd->stat & TX_BD_RL) {
 		dev_err(&netdev->dev, "TX: retransmit limit\n");
-		dev->stats.tx_aborted_errors++;
+		netdev->stats.tx_aborted_errors++;
 	}
 
 	if (bd->stat & TX_BD_UR) {
 		dev_err(&netdev->dev, "TX: underrun\n");
-		dev->stats.tx_fifo_errors++;
+		netdev->stats.tx_fifo_errors++;
 	}
 
 	if (bd->stat & TX_BD_CS) {
 		dev_err(&netdev->dev, "TX: carrier sense lost\n");
-		dev->stats.tx_carrier_errors++;
+		netdev->stats.tx_carrier_errors++;
 	}
 
 	if (bd->stat & TX_BD_STATS)
-		dev->stats.tx_errors++;
+		netdev->stats.tx_errors++;
 
-	dev->stats.collisions += (bd->stat >> 4) & 0xf;
-	dev->stats.tx_bytes += bd->stat >> 16;
-	dev->stats.tx_packets++;
+	netdev->stats.collisions += (bd->stat >> 4) & 0xf;
+	netdev->stats.tx_bytes += bd->stat >> 16;
+	netdev->stats.tx_packets++;
 	return 0;
 }
 
@@ -499,7 +512,7 @@ static void ethoc_tx(struct net_device *dev)
 
 static irqreturn_t ethoc_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct ethoc *priv = netdev_priv(dev);
 	u32 pending;
 
@@ -514,7 +527,7 @@ static irqreturn_t ethoc_interrupt(int irq, void *dev_id)
 
 	if (pending & INT_MASK_BUSY) {
 		dev_err(&dev->dev, "packet dropped\n");
-		priv->stats.rx_dropped++;
+		dev->stats.rx_dropped++;
 	}
 
 	if (pending & INT_MASK_RX) {
@@ -598,8 +611,11 @@ static int ethoc_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
 
 	while (time_before(jiffies, timeout)) {
 		u32 stat = ethoc_read(priv, MIISTATUS);
-		if (!(stat & MIISTATUS_BUSY))
+		if (!(stat & MIISTATUS_BUSY)) {
+			/* reset MII command register */
+			ethoc_write(priv, MIICOMMAND, 0);
 			return 0;
+		}
 
 		schedule();
 	}
@@ -620,21 +636,12 @@ static int ethoc_mdio_probe(struct net_device *dev)
 {
 	struct ethoc *priv = netdev_priv(dev);
 	struct phy_device *phy;
-	int i;
+	int err;
 
-	for (i = 0; i < PHY_MAX_ADDR; i++) {
-		phy = priv->mdio->phy_map[i];
-		if (phy) {
-			if (priv->phy_id != -1) {
-				/* attach to specified PHY */
-				if (priv->phy_id == phy->addr)
-					break;
-			} else {
-				/* autoselect PHY if none was specified */
-				if (phy->addr != 0)
-					break;
-			}
-		}
+	if (priv->phy_id != -1) {
+		phy = priv->mdio->phy_map[priv->phy_id];
+	} else {
+		phy = phy_find_first(priv->mdio);
 	}
 
 	if (!phy) {
@@ -642,11 +649,11 @@ static int ethoc_mdio_probe(struct net_device *dev)
 		return -ENXIO;
 	}
 
-	phy = phy_connect(dev, dev_name(&phy->dev), ethoc_mdio_poll, 0,
+	err = phy_connect_direct(dev, phy, ethoc_mdio_poll, 0,
 			PHY_INTERFACE_MODE_GMII);
-	if (IS_ERR(phy)) {
+	if (err) {
 		dev_err(&dev->dev, "could not attach to PHY\n");
-		return PTR_ERR(phy);
+		return err;
 	}
 
 	priv->phy = phy;
@@ -656,8 +663,6 @@ static int ethoc_mdio_probe(struct net_device *dev)
 static int ethoc_open(struct net_device *dev)
 {
 	struct ethoc *priv = netdev_priv(dev);
-	unsigned int min_tx = 2;
-	unsigned int num_bd;
 	int ret;
 
 	ret = request_irq(dev->irq, ethoc_interrupt, IRQF_SHARED,
@@ -665,14 +670,7 @@ static int ethoc_open(struct net_device *dev)
 	if (ret)
 		return ret;
 
-	/* calculate the number of TX/RX buffers, maximum 128 supported */
-	num_bd = min_t(unsigned int,
-		128, (dev->mem_end - dev->mem_start + 1) / ETHOC_BUFSIZ);
-	priv->num_tx = max(min_tx, num_bd / 4);
-	priv->num_rx = num_bd - priv->num_tx;
-	ethoc_write(priv, TX_BD_NUM, priv->num_tx);
-
-	ethoc_init_ring(priv);
+	ethoc_init_ring(priv, dev->mem_start);
 	ethoc_reset(priv);
 
 	if (netif_queue_stopped(dev)) {
@@ -810,8 +808,7 @@ static void ethoc_tx_timeout(struct net_device *dev)
 
 static struct net_device_stats *ethoc_stats(struct net_device *dev)
 {
-	struct ethoc *priv = netdev_priv(dev);
-	return &priv->stats;
+	return &dev->stats;
 }
 
 static netdev_tx_t ethoc_start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -822,7 +819,7 @@ static netdev_tx_t ethoc_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	void *dest;
 
 	if (unlikely(skb->len > ETHOC_BUFSIZ)) {
-		priv->stats.tx_errors++;
+		dev->stats.tx_errors++;
 		goto out;
 	}
 
@@ -836,7 +833,7 @@ static netdev_tx_t ethoc_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	else
 		bd.stat &= ~TX_BD_PAD;
 
-	dest = phys_to_virt(bd.addr);
+	dest = priv->vma[entry];
 	memcpy_toio(dest, skb->data, skb->len);
 
 	bd.stat &= ~(TX_BD_STATS | TX_BD_LEN_MASK);
@@ -882,6 +879,7 @@ static int ethoc_probe(struct platform_device *pdev)
 	struct resource *mem = NULL;
 	struct ethoc *priv = NULL;
 	unsigned int phy;
+	int num_bd;
 	int ret = 0;
 
 	/* allocate networking device */
@@ -943,6 +941,7 @@ static int ethoc_probe(struct platform_device *pdev)
 	priv = netdev_priv(netdev);
 	priv->netdev = netdev;
 	priv->dma_alloc = 0;
+	priv->io_region_size = mmio->end - mmio->start + 1;
 
 	priv->iobase = devm_ioremap_nocache(&pdev->dev, netdev->base_addr,
 			resource_size(mmio));
@@ -962,7 +961,7 @@ static int ethoc_probe(struct platform_device *pdev)
 		}
 	} else {
 		/* Allocate buffer memory */
-		priv->membase = dma_alloc_coherent(NULL,
+		priv->membase = dmam_alloc_coherent(&pdev->dev,
 			buffer_size, (void *)&netdev->mem_start,
 			GFP_KERNEL);
 		if (!priv->membase) {
@@ -975,6 +974,18 @@ static int ethoc_probe(struct platform_device *pdev)
 		priv->dma_alloc = buffer_size;
 	}
 
+	/* calculate the number of TX/RX buffers, maximum 128 supported */
+	num_bd = min_t(unsigned int,
+		128, (netdev->mem_end - netdev->mem_start + 1) / ETHOC_BUFSIZ);
+	priv->num_tx = max(2, num_bd / 4);
+	priv->num_rx = num_bd - priv->num_tx;
+
+	priv->vma = devm_kzalloc(&pdev->dev, num_bd*sizeof(void*), GFP_KERNEL);
+	if (!priv->vma) {
+		ret = -ENOMEM;
+		goto error;
+	}
+
 	/* Allow the platform setup code to pass in a MAC address. */
 	if (pdev->dev.platform_data) {
 		struct ethoc_platform_data *pdata =
@@ -1047,20 +1058,19 @@ static int ethoc_probe(struct platform_device *pdev)
 	ret = register_netdev(netdev);
 	if (ret < 0) {
 		dev_err(&netdev->dev, "failed to register interface\n");
-		goto error;
+		goto error2;
 	}
 
 	goto out;
 
+error2:
+	netif_napi_del(&priv->napi);
 error:
 	mdiobus_unregister(priv->mdio);
 free_mdio:
 	kfree(priv->mdio->irq);
 	mdiobus_free(priv->mdio);
 free:
-	if (priv->dma_alloc)
-		dma_free_coherent(NULL, priv->dma_alloc, priv->membase,
-			netdev->mem_start);
 	free_netdev(netdev);
 out:
 	return ret;
@@ -1078,6 +1088,7 @@ static int ethoc_remove(struct platform_device *pdev)
 	platform_set_drvdata(pdev, NULL);
 
 	if (netdev) {
+		netif_napi_del(&priv->napi);
 		phy_disconnect(priv->phy);
 		priv->phy = NULL;
 
@@ -1086,9 +1097,6 @@ static int ethoc_remove(struct platform_device *pdev)
 			kfree(priv->mdio->irq);
 			mdiobus_free(priv->mdio);
 		}
-		if (priv->dma_alloc)
-			dma_free_coherent(NULL, priv->dma_alloc, priv->membase,
-				netdev->mem_start);
 		unregister_netdev(netdev);
 		free_netdev(netdev);
 	}