X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fsis190.c;h=abc63b0663be9ec83854da1a5b79feeefe6d4e66;hb=ac7b77f13f2f33270276f88ad0f427e031552e04;hp=97aa18dd9a4b56748e8a538b648a8fe5858368ca;hpb=35aeb7809345e0362772a75368a3e62ecd931481;p=linux-2.6

diff --git a/drivers/net/sis190.c b/drivers/net/sis190.c
index 97aa18dd9a..abc63b0663 100644
--- a/drivers/net/sis190.c
+++ b/drivers/net/sis190.c
@@ -212,6 +212,12 @@ enum _DescStatusBit {
 	THOL2		= 0x20000000,
 	THOL1		= 0x10000000,
 	THOL0		= 0x00000000,
+
+	WND		= 0x00080000,
+	TABRT		= 0x00040000,
+	FIFO		= 0x00020000,
+	LINK		= 0x00010000,
+	ColCountMask	= 0x0000ffff,
 	/* RxDesc.status */
 	IPON		= 0x20000000,
 	TCPON		= 0x10000000,
@@ -518,25 +524,28 @@ static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
 	return cur - start;
 }
 
-static int sis190_try_rx_copy(struct sis190_private *tp,
-			      struct sk_buff **sk_buff, int pkt_size,
-			      struct RxDesc *desc)
+static bool sis190_try_rx_copy(struct sis190_private *tp,
+			       struct sk_buff **sk_buff, int pkt_size,
+			       dma_addr_t addr)
 {
-	int ret = -1;
+	struct sk_buff *skb;
+	bool done = false;
 
-	if (pkt_size < rx_copybreak) {
-		struct sk_buff *skb;
+	if (pkt_size >= rx_copybreak)
+		goto out;
 
-		skb = netdev_alloc_skb(tp->dev, pkt_size + 2);
-		if (skb) {
-			skb_reserve(skb, 2);
-			skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
-			*sk_buff = skb;
-			sis190_give_to_asic(desc, tp->rx_buf_sz);
-			ret = 0;
-		}
-	}
-	return ret;
+	skb = netdev_alloc_skb(tp->dev, pkt_size + 2);
+	if (!skb)
+		goto out;
+
+	pci_dma_sync_single_for_device(tp->pci_dev, addr, pkt_size,
+				       PCI_DMA_FROMDEVICE);
+	skb_reserve(skb, 2);
+	skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
+	*sk_buff = skb;
+	done = true;
+out:
+	return done;
 }
 
 static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats)
@@ -586,9 +595,9 @@ static int sis190_rx_interrupt(struct net_device *dev,
 			sis190_give_to_asic(desc, tp->rx_buf_sz);
 		else {
 			struct sk_buff *skb = tp->Rx_skbuff[entry];
+			dma_addr_t addr = le32_to_cpu(desc->addr);
 			int pkt_size = (status & RxSizeMask) - 4;
-			void (*pci_action)(struct pci_dev *, dma_addr_t,
-				size_t, int) = pci_dma_sync_single_for_device;
+			struct pci_dev *pdev = tp->pci_dev;
 
 			if (unlikely(pkt_size > tp->rx_buf_sz)) {
 				net_intr(tp, KERN_INFO
@@ -600,19 +609,18 @@ static int sis190_rx_interrupt(struct net_device *dev,
 				continue;
 			}
 
-			pci_dma_sync_single_for_cpu(tp->pci_dev,
-				le32_to_cpu(desc->addr), tp->rx_buf_sz,
-				PCI_DMA_FROMDEVICE);
 
-			if (sis190_try_rx_copy(tp, &skb, pkt_size, desc)) {
-				pci_action = pci_unmap_single;
+			if (sis190_try_rx_copy(tp, &skb, pkt_size, addr)) {
+				pci_dma_sync_single_for_device(pdev, addr,
+					tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+				sis190_give_to_asic(desc, tp->rx_buf_sz);
+			} else {
+				pci_unmap_single(pdev, addr, tp->rx_buf_sz,
+						 PCI_DMA_FROMDEVICE);
 				tp->Rx_skbuff[entry] = NULL;
 				sis190_make_unusable_by_asic(desc);
 			}
 
-			pci_action(tp->pci_dev, le32_to_cpu(desc->addr),
-				   tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
-
 			skb_put(skb, pkt_size);
 			skb->protocol = eth_type_trans(skb, dev);
 
@@ -651,9 +659,31 @@ static void sis190_unmap_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
 	memset(desc, 0x00, sizeof(*desc));
 }
 
+static inline int sis190_tx_pkt_err(u32 status, struct net_device_stats *stats)
+{
+#define TxErrMask	(WND | TABRT | FIFO | LINK)
+
+	if (!unlikely(status & TxErrMask))
+		return 0;
+
+	if (status & WND)
+		stats->tx_window_errors++;
+	if (status & TABRT)
+		stats->tx_aborted_errors++;
+	if (status & FIFO)
+		stats->tx_fifo_errors++;
+	if (status & LINK)
+		stats->tx_carrier_errors++;
+
+	stats->tx_errors++;
+
+	return -1;
+}
+
 static void sis190_tx_interrupt(struct net_device *dev,
 				struct sis190_private *tp, void __iomem *ioaddr)
 {
+	struct net_device_stats *stats = &dev->stats;
 	u32 pending, dirty_tx = tp->dirty_tx;
 	/*
 	 * It would not be needed if queueing was allowed to be enabled
@@ -668,15 +698,19 @@ static void sis190_tx_interrupt(struct net_device *dev,
 	for (; pending; pending--, dirty_tx++) {
 		unsigned int entry = dirty_tx % NUM_TX_DESC;
 		struct TxDesc *txd = tp->TxDescRing + entry;
+		u32 status = le32_to_cpu(txd->status);
 		struct sk_buff *skb;
 
-		if (le32_to_cpu(txd->status) & OWNbit)
+		if (status & OWNbit)
 			break;
 
 		skb = tp->Tx_skbuff[entry];
 
-		dev->stats.tx_packets++;
-		dev->stats.tx_bytes += skb->len;
+		if (likely(sis190_tx_pkt_err(status, stats) == 0)) {
+			stats->tx_packets++;
+			stats->tx_bytes += skb->len;
+			stats->collisions += ((status & ColCountMask) - 1);
+		}
 
 		sis190_unmap_tx_skb(tp->pci_dev, skb, txd);
 		tp->Tx_skbuff[entry] = NULL;
@@ -897,10 +931,9 @@ static void sis190_phy_task(struct work_struct *work)
 		mod_timer(&tp->timer, jiffies + HZ/10);
 	} else if (!(mdio_read_latched(ioaddr, phy_id, MII_BMSR) &
 		     BMSR_ANEGCOMPLETE)) {
-		net_link(tp, KERN_WARNING "%s: PHY reset until link up.\n",
-			 dev->name);
 		netif_carrier_off(dev);
-		mdio_write(ioaddr, phy_id, MII_BMCR, val | BMCR_RESET);
+		net_link(tp, KERN_WARNING "%s: auto-negotiating...\n",
+			 dev->name);
 		mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
 	} else {
 		/* Rejoice ! */