linux 2.6.16.38 w/ vs2.0.3-rc1
[linux-2.6.git] / drivers / net / forcedeth.c
index 4ebcd05..3682ec6 100644 (file)
@@ -10,7 +10,7 @@
  * trademarks of NVIDIA Corporation in the United States and other
  * countries.
  *
- * Copyright (C) 2003,4 Manfred Spraul
+ * Copyright (C) 2003,4,5 Manfred Spraul
  * Copyright (C) 2004 Andrew de Quincey (wol support)
  * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
  *             IRQ rate fixes, bigendian fixes, cleanups, verification)
  *                        into nv_close, otherwise reenabling for wol can
  *                        cause DMA to kfree'd memory.
  *     0.31: 14 Nov 2004: ethtool support for getting/setting link
- *                        capabilities.
+ *                        capabilities.
  *     0.32: 16 Apr 2005: RX_ERROR4 handling added.
+ *     0.33: 16 May 2005: Support for MCP51 added.
+ *     0.34: 18 Jun 2005: Add DEV_NEED_LINKTIMER to all nForce nics.
+ *     0.35: 26 Jun 2005: Support for MCP55 added.
+ *     0.36: 28 Jun 2005: Add jumbo frame support.
+ *     0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
+ *     0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
+ *                        per-packet flags.
+ *     0.39: 18 Jul 2005: Add 64bit descriptor support.
+ *     0.40: 19 Jul 2005: Add support for mac address change.
+ *     0.41: 30 Jul 2005: Write back original MAC in nv_close instead
+ *                        of nv_remove
+ *     0.42: 06 Aug 2005: Fix lack of link speed initialization
+ *                        in the second (and later) nv_open call
+ *     0.43: 10 Aug 2005: Add support for tx checksum.
+ *     0.44: 20 Aug 2005: Add support for scatter gather and segmentation.
+ *     0.45: 18 Sep 2005: Remove nv_stop/start_rx from every link check
+ *     0.46: 20 Oct 2005: Add irq optimization modes.
+ *     0.47: 26 Oct 2005: Add phyaddr 0 in phy scan.
+ *     0.48: 24 Dec 2005: Disable TSO, bugfix for pci_map_single
+ *     0.49: 10 Dec 2005: Fix tso for large buffers.
  *
  * Known bugs:
  * We suspect that on some hardware no TX done interrupts are generated.
  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  * superfluous timer interrupts from the nic.
  */
-#define FORCEDETH_VERSION              "0.32"
+#define FORCEDETH_VERSION              "0.49"
 #define DRV_NAME                       "forcedeth"
 
 #include <linux/module.h>
  * Hardware access:
  */
 
-#define DEV_NEED_LASTPACKET1   0x0001  /* set LASTPACKET1 in tx flags */
-#define DEV_IRQMASK_1          0x0002  /* use NVREG_IRQMASK_WANTED_1 for irq mask */
-#define DEV_IRQMASK_2          0x0004  /* use NVREG_IRQMASK_WANTED_2 for irq mask */
-#define DEV_NEED_TIMERIRQ      0x0008  /* set the timer irq flag in the irq mask */
-#define DEV_NEED_LINKTIMER     0x0010  /* poll link settings. Relies on the timer irq */
+#define DEV_NEED_TIMERIRQ      0x0001  /* set the timer irq flag in the irq mask */
+#define DEV_NEED_LINKTIMER     0x0002  /* poll link settings. Relies on the timer irq */
+#define DEV_HAS_LARGEDESC      0x0004  /* device supports jumbo frames and needs packet format 2 */
+#define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
+#define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */
 
 enum {
        NvRegIrqStatus = 0x000,
@@ -143,13 +163,17 @@ enum {
 #define NVREG_IRQ_RX                   0x0002
 #define NVREG_IRQ_RX_NOBUF             0x0004
 #define NVREG_IRQ_TX_ERR               0x0008
-#define NVREG_IRQ_TX2                  0x0010
+#define NVREG_IRQ_TX_OK                        0x0010
 #define NVREG_IRQ_TIMER                        0x0020
 #define NVREG_IRQ_LINK                 0x0040
+#define NVREG_IRQ_TX_ERROR             0x0080
 #define NVREG_IRQ_TX1                  0x0100
-#define NVREG_IRQMASK_WANTED_1         0x005f
-#define NVREG_IRQMASK_WANTED_2         0x0147
-#define NVREG_IRQ_UNKNOWN              (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR|NVREG_IRQ_TX2|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_TX1))
+#define NVREG_IRQMASK_THROUGHPUT       0x00df
+#define NVREG_IRQMASK_CPU              0x0040
+
+#define NVREG_IRQ_UNKNOWN      (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \
+                                       NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_TX_ERROR| \
+                                       NVREG_IRQ_TX1))
 
        NvRegUnknownSetupReg6 = 0x008,
 #define NVREG_UNKSETUP6_VAL            3
@@ -159,7 +183,8 @@ enum {
  * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
  */
        NvRegPollingInterval = 0x00c,
-#define NVREG_POLL_DEFAULT     970
+#define NVREG_POLL_DEFAULT_THROUGHPUT  970
+#define NVREG_POLL_DEFAULT_CPU 13
        NvRegMisc1 = 0x080,
 #define NVREG_MISC1_HD         0x02
 #define NVREG_MISC1_FORCE      0x3b0f3c
@@ -226,6 +251,9 @@ enum {
 #define NVREG_TXRXCTL_IDLE     0x0008
 #define NVREG_TXRXCTL_RESET    0x0010
 #define NVREG_TXRXCTL_RXCHECK  0x0400
+#define NVREG_TXRXCTL_DESC_1   0
+#define NVREG_TXRXCTL_DESC_2   0x02100
+#define NVREG_TXRXCTL_DESC_3   0x02200
        NvRegMIIStatus = 0x180,
 #define NVREG_MIISTAT_ERROR            0x0001
 #define NVREG_MIISTAT_LINKCHANGE       0x0008
@@ -283,6 +311,18 @@ struct ring_desc {
        u32 FlagLen;
 };
 
+struct ring_desc_ex {
+       u32 PacketBufferHigh;
+       u32 PacketBufferLow;
+       u32 Reserved;
+       u32 FlagLen;
+};
+
+typedef union _ring_type {
+       struct ring_desc* orig;
+       struct ring_desc_ex* ex;
+} ring_type;
+
 #define FLAG_MASK_V1 0xffff0000
 #define FLAG_MASK_V2 0xffffc000
 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
@@ -290,7 +330,7 @@ struct ring_desc {
 
 #define NV_TX_LASTPACKET       (1<<16)
 #define NV_TX_RETRYERROR       (1<<19)
-#define NV_TX_LASTPACKET1      (1<<24)
+#define NV_TX_FORCED_INTERRUPT (1<<24)
 #define NV_TX_DEFERRED         (1<<26)
 #define NV_TX_CARRIERLOST      (1<<27)
 #define NV_TX_LATECOLLISION    (1<<28)
@@ -300,7 +340,7 @@ struct ring_desc {
 
 #define NV_TX2_LASTPACKET      (1<<29)
 #define NV_TX2_RETRYERROR      (1<<18)
-#define NV_TX2_LASTPACKET1     (1<<23)
+#define NV_TX2_FORCED_INTERRUPT        (1<<30)
 #define NV_TX2_DEFERRED                (1<<25)
 #define NV_TX2_CARRIERLOST     (1<<26)
 #define NV_TX2_LATECOLLISION   (1<<27)
@@ -308,6 +348,12 @@ struct ring_desc {
 /* error and valid are the same for both */
 #define NV_TX2_ERROR           (1<<30)
 #define NV_TX2_VALID           (1<<31)
+#define NV_TX2_TSO             (1<<28)
+#define NV_TX2_TSO_SHIFT       14
+#define NV_TX2_TSO_MAX_SHIFT   14
+#define NV_TX2_TSO_MAX_SIZE    (1<<NV_TX2_TSO_MAX_SHIFT)
+#define NV_TX2_CHECKSUM_L3     (1<<27)
+#define NV_TX2_CHECKSUM_L4     (1<<26)
 
 #define NV_RX_DESCRIPTORVALID  (1<<16)
 #define NV_RX_MISSEDFRAME      (1<<17)
@@ -365,20 +411,24 @@ struct ring_desc {
 #define NV_WATCHDOG_TIMEO      (5*HZ)
 
 #define RX_RING                128
-#define TX_RING                64
+#define TX_RING                256
 /* 
  * If your nic mysteriously hangs then try to reduce the limits
  * to 1/0: It might be required to set NV_TX_LASTPACKET in the
  * last valid ring entry. But this would be impossible to
  * implement - probably a disassembly error.
  */
-#define TX_LIMIT_STOP  63
-#define TX_LIMIT_START 62
+#define TX_LIMIT_STOP  255
+#define TX_LIMIT_START 254
 
 /* rx/tx mac addr + type + vlan + align + slack*/
-#define RX_NIC_BUFSIZE         (ETH_DATA_LEN + 64)
-/* even more slack */
-#define RX_ALLOC_BUFSIZE       (ETH_DATA_LEN + 128)
+#define NV_RX_HEADERS          (64)
+/* even more slack. */
+#define NV_RX_ALLOC_PAD                (64)
+
+/* maximum mtu size */
+#define NV_PKTLIMIT_1  ETH_DATA_LEN    /* hard limit not known */
+#define NV_PKTLIMIT_2  9100    /* Actual limit according to NVidia: 9202 */
 
 #define OOM_REFILL     (1+HZ/20)
 #define POLL_WAIT      (1+HZ/100)
@@ -386,13 +436,14 @@ struct ring_desc {
 
 /* 
  * desc_ver values:
- * This field has two purposes:
- * - Newer nics uses a different ring layout. The layout is selected by
- *   comparing np->desc_ver with DESC_VER_xy.
- * - It contains bits that are forced on when writing to NvRegTxRxControl.
+ * The nic supports three different descriptor types:
+ * - DESC_VER_1: Original
+ * - DESC_VER_2: support for jumbo frames.
+ * - DESC_VER_3: 64-bit format.
  */
-#define DESC_VER_1     0x0
-#define DESC_VER_2     (0x02100|NVREG_TXRXCTL_RXCHECK)
+#define DESC_VER_1     1
+#define DESC_VER_2     2
+#define DESC_VER_3     3
 
 /* PHY defines */
 #define PHY_OUI_MARVELL        0x5043
@@ -459,17 +510,19 @@ struct fe_priv {
        u32 orig_mac[2];
        u32 irqmask;
        u32 desc_ver;
+       u32 txrxctl_bits;
 
        void __iomem *base;
 
        /* rx specific fields.
         * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
         */
-       struct ring_desc *rx_ring;
+       ring_type rx_ring;
        unsigned int cur_rx, refill_rx;
        struct sk_buff *rx_skbuff[RX_RING];
        dma_addr_t rx_dma[RX_RING];
        unsigned int rx_buf_sz;
+       unsigned int pkt_limit;
        struct timer_list oom_kick;
        struct timer_list nic_poll;
 
@@ -481,10 +534,11 @@ struct fe_priv {
        /*
         * tx specific fields.
         */
-       struct ring_desc *tx_ring;
+       ring_type tx_ring;
        unsigned int next_tx, nic_tx;
        struct sk_buff *tx_skbuff[TX_RING];
        dma_addr_t tx_dma[TX_RING];
+       unsigned int tx_dma_len[TX_RING];
        u32 tx_flags;
 };
 
@@ -494,6 +548,25 @@ struct fe_priv {
  */
 static int max_interrupt_work = 5;
 
+/*
+ * Optimization can be either throuput mode or cpu mode
+ * 
+ * Throughput Mode: Every tx and rx packet will generate an interrupt.
+ * CPU Mode: Interrupts are controlled by a timer.
+ */
+#define NV_OPTIMIZATION_MODE_THROUGHPUT 0
+#define NV_OPTIMIZATION_MODE_CPU        1
+static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
+
+/*
+ * Poll interval for timer irq
+ *
+ * This interval determines how frequent an interrupt is generated.
+ * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
+ * Min = 0, and Max = 65535
+ */
+static int poll_interval = -1;
+
 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 {
        return netdev_priv(dev);
@@ -501,7 +574,7 @@ static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 
 static inline u8 __iomem *get_hwbase(struct net_device *dev)
 {
-       return get_nvpriv(dev)->base;
+       return ((struct fe_priv *)netdev_priv(dev))->base;
 }
 
 static inline void pci_push(u8 __iomem *base)
@@ -516,6 +589,11 @@ static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
                & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 }
 
+static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
+{
+       return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
+}
+
 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
                                int delay, int delaymax, const char *msg)
 {
@@ -585,7 +663,7 @@ static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
 
 static int phy_reset(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u32 miicontrol;
        unsigned int tries = 0;
 
@@ -688,7 +766,7 @@ static int phy_init(struct net_device *dev)
 
 static void nv_start_rx(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
 
        dprintk(KERN_DEBUG "%s: nv_start_rx\n", dev->name);
@@ -744,14 +822,14 @@ static void nv_stop_tx(struct net_device *dev)
 
 static void nv_txrx_reset(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
 
        dprintk(KERN_DEBUG "%s: nv_txrx_reset\n", dev->name);
-       writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->desc_ver, base + NvRegTxRxControl);
+       writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
        pci_push(base);
        udelay(NV_TXRX_RESET_DELAY);
-       writel(NVREG_TXRXCTL_BIT2 | np->desc_ver, base + NvRegTxRxControl);
+       writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
        pci_push(base);
 }
 
@@ -763,7 +841,7 @@ static void nv_txrx_reset(struct net_device *dev)
  */
 static struct net_device_stats *nv_get_stats(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
 
        /* It seems that the nic always generates interrupts and doesn't
         * accumulate errors internally. Thus the current values in np->stats
@@ -779,7 +857,7 @@ static struct net_device_stats *nv_get_stats(struct net_device *dev)
  */
 static int nv_alloc_rx(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        unsigned int refill_rx = np->refill_rx;
        int nr;
 
@@ -789,7 +867,7 @@ static int nv_alloc_rx(struct net_device *dev)
                nr = refill_rx % RX_RING;
                if (np->rx_skbuff[nr] == NULL) {
 
-                       skb = dev_alloc_skb(RX_ALLOC_BUFSIZE);
+                       skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
                        if (!skb)
                                break;
 
@@ -798,11 +876,18 @@ static int nv_alloc_rx(struct net_device *dev)
                } else {
                        skb = np->rx_skbuff[nr];
                }
-               np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, skb->len,
-                                               PCI_DMA_FROMDEVICE);
-               np->rx_ring[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
-               wmb();
-               np->rx_ring[nr].FlagLen = cpu_to_le32(RX_NIC_BUFSIZE | NV_RX_AVAIL);
+               np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data,
+                                       skb->end-skb->data, PCI_DMA_FROMDEVICE);
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                       np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
+                       wmb();
+                       np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+               } else {
+                       np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
+                       np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
+                       wmb();
+                       np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
+               }
                dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
                                        dev->name, refill_rx);
                refill_rx++;
@@ -816,7 +901,7 @@ static int nv_alloc_rx(struct net_device *dev)
 static void nv_do_rx_refill(unsigned long data)
 {
        struct net_device *dev = (struct net_device *) data;
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
 
        disable_irq(dev->irq);
        if (nv_alloc_rx(dev)) {
@@ -828,49 +913,94 @@ static void nv_do_rx_refill(unsigned long data)
        enable_irq(dev->irq);
 }
 
-static int nv_init_ring(struct net_device *dev)
+static void nv_init_rx(struct net_device *dev) 
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        int i;
 
-       np->next_tx = np->nic_tx = 0;
-       for (i = 0; i < TX_RING; i++)
-               np->tx_ring[i].FlagLen = 0;
-
        np->cur_rx = RX_RING;
        np->refill_rx = 0;
        for (i = 0; i < RX_RING; i++)
-               np->rx_ring[i].FlagLen = 0;
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       np->rx_ring.orig[i].FlagLen = 0;
+               else
+                       np->rx_ring.ex[i].FlagLen = 0;
+}
+
+static void nv_init_tx(struct net_device *dev)
+{
+       struct fe_priv *np = netdev_priv(dev);
+       int i;
+
+       np->next_tx = np->nic_tx = 0;
+       for (i = 0; i < TX_RING; i++) {
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       np->tx_ring.orig[i].FlagLen = 0;
+               else
+                       np->tx_ring.ex[i].FlagLen = 0;
+               np->tx_skbuff[i] = NULL;
+               np->tx_dma[i] = 0;
+       }
+}
+
+static int nv_init_ring(struct net_device *dev)
+{
+       nv_init_tx(dev);
+       nv_init_rx(dev);
        return nv_alloc_rx(dev);
 }
 
+static int nv_release_txskb(struct net_device *dev, unsigned int skbnr)
+{
+       struct fe_priv *np = netdev_priv(dev);
+
+       dprintk(KERN_INFO "%s: nv_release_txskb for skbnr %d\n",
+               dev->name, skbnr);
+
+       if (np->tx_dma[skbnr]) {
+               pci_unmap_page(np->pci_dev, np->tx_dma[skbnr],
+                              np->tx_dma_len[skbnr],
+                              PCI_DMA_TODEVICE);
+               np->tx_dma[skbnr] = 0;
+       }
+
+       if (np->tx_skbuff[skbnr]) {
+               dev_kfree_skb_irq(np->tx_skbuff[skbnr]);
+               np->tx_skbuff[skbnr] = NULL;
+               return 1;
+       } else {
+               return 0;
+       }
+}
+
 static void nv_drain_tx(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
-       int i;
+       struct fe_priv *np = netdev_priv(dev);
+       unsigned int i;
+       
        for (i = 0; i < TX_RING; i++) {
-               np->tx_ring[i].FlagLen = 0;
-               if (np->tx_skbuff[i]) {
-                       pci_unmap_single(np->pci_dev, np->tx_dma[i],
-                                               np->tx_skbuff[i]->len,
-                                               PCI_DMA_TODEVICE);
-                       dev_kfree_skb(np->tx_skbuff[i]);
-                       np->tx_skbuff[i] = NULL;
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       np->tx_ring.orig[i].FlagLen = 0;
+               else
+                       np->tx_ring.ex[i].FlagLen = 0;
+               if (nv_release_txskb(dev, i))
                        np->stats.tx_dropped++;
-               }
        }
 }
 
 static void nv_drain_rx(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        int i;
        for (i = 0; i < RX_RING; i++) {
-               np->rx_ring[i].FlagLen = 0;
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       np->rx_ring.orig[i].FlagLen = 0;
+               else
+                       np->rx_ring.ex[i].FlagLen = 0;
                wmb();
                if (np->rx_skbuff[i]) {
                        pci_unmap_single(np->pci_dev, np->rx_dma[i],
-                                               np->rx_skbuff[i]->len,
+                                               np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
                                                PCI_DMA_FROMDEVICE);
                        dev_kfree_skb(np->rx_skbuff[i]);
                        np->rx_skbuff[i] = NULL;
@@ -890,20 +1020,106 @@ static void drain_ring(struct net_device *dev)
  */
 static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
-       int nr = np->next_tx % TX_RING;
+       struct fe_priv *np = netdev_priv(dev);
+       u32 tx_flags = 0;
+       u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
+       unsigned int fragments = skb_shinfo(skb)->nr_frags;
+       unsigned int nr = (np->next_tx - 1) % TX_RING;
+       unsigned int start_nr = np->next_tx % TX_RING;
+       unsigned int i;
+       u32 offset = 0;
+       u32 bcnt;
+       u32 size = skb->len-skb->data_len;
+       u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+
+       /* add fragments to entries count */
+       for (i = 0; i < fragments; i++) {
+               entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
+                          ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+       }
+
+       spin_lock_irq(&np->lock);
+
+       if ((np->next_tx - np->nic_tx + entries - 1) > TX_LIMIT_STOP) {
+               spin_unlock_irq(&np->lock);
+               netif_stop_queue(dev);
+               return NETDEV_TX_BUSY;
+       }
+
+       /* setup the header buffer */
+       do {
+               bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+               nr = (nr + 1) % TX_RING;
+
+               np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
+                                               PCI_DMA_TODEVICE);
+               np->tx_dma_len[nr] = bcnt;
+
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                       np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+                       np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+               } else {
+                       np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+                       np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+                       np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+               }
+               tx_flags = np->tx_flags;
+               offset += bcnt;
+               size -= bcnt;
+       } while(size);
+
+       /* setup the fragments */
+       for (i = 0; i < fragments; i++) {
+               skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+               u32 size = frag->size;
+               offset = 0;
+
+               do {
+                       bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+                       nr = (nr + 1) % TX_RING;
+
+                       np->tx_dma[nr] = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
+                                                     PCI_DMA_TODEVICE);
+                       np->tx_dma_len[nr] = bcnt;
+
+                       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                               np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+                               np->tx_ring.orig[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+                       } else {
+                               np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+                               np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+                               np->tx_ring.ex[nr].FlagLen = cpu_to_le32((bcnt-1) | tx_flags);
+                       }
+                       offset += bcnt;
+                       size -= bcnt;
+               } while (size);
+       }
+
+       /* set last fragment flag  */
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+               np->tx_ring.orig[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
+       } else {
+               np->tx_ring.ex[nr].FlagLen |= cpu_to_le32(tx_flags_extra);
+       }
 
        np->tx_skbuff[nr] = skb;
-       np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data,skb->len,
-                                       PCI_DMA_TODEVICE);
 
-       np->tx_ring[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+#ifdef NETIF_F_TSO
+       if (skb_shinfo(skb)->tso_size)
+               tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->tso_size << NV_TX2_TSO_SHIFT);
+       else
+#endif
+       tx_flags_extra = (skb->ip_summed == CHECKSUM_HW ? (NV_TX2_CHECKSUM_L3|NV_TX2_CHECKSUM_L4) : 0);
+
+       /* set tx flags */
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+               np->tx_ring.orig[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
+       } else {
+               np->tx_ring.ex[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);
+       }       
 
-       spin_lock_irq(&np->lock);
-       wmb();
-       np->tx_ring[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
-       dprintk(KERN_DEBUG "%s: nv_start_xmit: packet packet %d queued for transmission.\n",
-                               dev->name, np->next_tx);
+       dprintk(KERN_DEBUG "%s: nv_start_xmit: packet %d (entries %d) queued for transmission. tx_flags_extra: %x\n",
+               dev->name, np->next_tx, entries, tx_flags_extra);
        {
                int j;
                for (j=0; j<64; j++) {
@@ -914,15 +1130,13 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
                dprintk("\n");
        }
 
-       np->next_tx++;
+       np->next_tx += entries;
 
        dev->trans_start = jiffies;
-       if (np->next_tx - np->nic_tx >= TX_LIMIT_STOP)
-               netif_stop_queue(dev);
        spin_unlock_irq(&np->lock);
-       writel(NVREG_TXRXCTL_KICK|np->desc_ver, get_hwbase(dev) + NvRegTxRxControl);
+       writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
        pci_push(get_hwbase(dev));
-       return 0;
+       return NETDEV_TX_OK;
 }
 
 /*
@@ -932,49 +1146,55 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
  */
 static void nv_tx_done(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u32 Flags;
-       int i;
+       unsigned int i;
+       struct sk_buff *skb;
 
        while (np->nic_tx != np->next_tx) {
                i = np->nic_tx % TX_RING;
 
-               Flags = le32_to_cpu(np->tx_ring[i].FlagLen);
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
+               else
+                       Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
 
                dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
                                        dev->name, np->nic_tx, Flags);
                if (Flags & NV_TX_VALID)
                        break;
                if (np->desc_ver == DESC_VER_1) {
-                       if (Flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
-                                                       NV_TX_UNDERFLOW|NV_TX_ERROR)) {
-                               if (Flags & NV_TX_UNDERFLOW)
-                                       np->stats.tx_fifo_errors++;
-                               if (Flags & NV_TX_CARRIERLOST)
-                                       np->stats.tx_carrier_errors++;
-                               np->stats.tx_errors++;
-                       } else {
-                               np->stats.tx_packets++;
-                               np->stats.tx_bytes += np->tx_skbuff[i]->len;
+                       if (Flags & NV_TX_LASTPACKET) {
+                               skb = np->tx_skbuff[i];
+                               if (Flags & (NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION|
+                                            NV_TX_UNDERFLOW|NV_TX_ERROR)) {
+                                       if (Flags & NV_TX_UNDERFLOW)
+                                               np->stats.tx_fifo_errors++;
+                                       if (Flags & NV_TX_CARRIERLOST)
+                                               np->stats.tx_carrier_errors++;
+                                       np->stats.tx_errors++;
+                               } else {
+                                       np->stats.tx_packets++;
+                                       np->stats.tx_bytes += skb->len;
+                               }
                        }
                } else {
-                       if (Flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
-                                                       NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
-                               if (Flags & NV_TX2_UNDERFLOW)
-                                       np->stats.tx_fifo_errors++;
-                               if (Flags & NV_TX2_CARRIERLOST)
-                                       np->stats.tx_carrier_errors++;
-                               np->stats.tx_errors++;
-                       } else {
-                               np->stats.tx_packets++;
-                               np->stats.tx_bytes += np->tx_skbuff[i]->len;
+                       if (Flags & NV_TX2_LASTPACKET) {
+                               skb = np->tx_skbuff[i];
+                               if (Flags & (NV_TX2_RETRYERROR|NV_TX2_CARRIERLOST|NV_TX2_LATECOLLISION|
+                                            NV_TX2_UNDERFLOW|NV_TX2_ERROR)) {
+                                       if (Flags & NV_TX2_UNDERFLOW)
+                                               np->stats.tx_fifo_errors++;
+                                       if (Flags & NV_TX2_CARRIERLOST)
+                                               np->stats.tx_carrier_errors++;
+                                       np->stats.tx_errors++;
+                               } else {
+                                       np->stats.tx_packets++;
+                                       np->stats.tx_bytes += skb->len;
+                               }                               
                        }
                }
-               pci_unmap_single(np->pci_dev, np->tx_dma[i],
-                                       np->tx_skbuff[i]->len,
-                                       PCI_DMA_TODEVICE);
-               dev_kfree_skb_irq(np->tx_skbuff[i]);
-               np->tx_skbuff[i] = NULL;
+               nv_release_txskb(dev, i);
                np->nic_tx++;
        }
        if (np->next_tx - np->nic_tx < TX_LIMIT_START)
@@ -987,12 +1207,59 @@ static void nv_tx_done(struct net_device *dev)
  */
 static void nv_tx_timeout(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
 
-       dprintk(KERN_DEBUG "%s: Got tx_timeout. irq: %08x\n", dev->name,
+       printk(KERN_INFO "%s: Got tx_timeout. irq: %08x\n", dev->name,
                        readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK);
 
+       {
+               int i;
+
+               printk(KERN_INFO "%s: Ring at %lx: next %d nic %d\n",
+                               dev->name, (unsigned long)np->ring_addr,
+                               np->next_tx, np->nic_tx);
+               printk(KERN_INFO "%s: Dumping tx registers\n", dev->name);
+               for (i=0;i<0x400;i+= 32) {
+                       printk(KERN_INFO "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+                                       i,
+                                       readl(base + i + 0), readl(base + i + 4),
+                                       readl(base + i + 8), readl(base + i + 12),
+                                       readl(base + i + 16), readl(base + i + 20),
+                                       readl(base + i + 24), readl(base + i + 28));
+               }
+               printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
+               for (i=0;i<TX_RING;i+= 4) {
+                       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                               printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
+                                      i, 
+                                      le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
+                                      le32_to_cpu(np->tx_ring.orig[i].FlagLen),
+                                      le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
+                                      le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
+                                      le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
+                                      le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
+                                      le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
+                                      le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
+                       } else {
+                               printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
+                                      i, 
+                                      le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
+                                      le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
+                                      le32_to_cpu(np->tx_ring.ex[i].FlagLen),
+                                      le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
+                                      le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
+                                      le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
+                                      le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
+                                      le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
+                                      le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
+                                      le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
+                                      le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
+                                      le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
+                       }
+               }
+       }
+
        spin_lock_irq(&np->lock);
 
        /* 1) stop tx engine */
@@ -1006,7 +1273,10 @@ static void nv_tx_timeout(struct net_device *dev)
                printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
                nv_drain_tx(dev);
                np->next_tx = np->nic_tx = 0;
-               writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+               else
+                       writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
                netif_wake_queue(dev);
        }
 
@@ -1070,7 +1340,7 @@ static int nv_getlen(struct net_device *dev, void *packet, int datalen)
 
 static void nv_rx_process(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u32 Flags;
 
        for (;;) {
@@ -1081,8 +1351,13 @@ static void nv_rx_process(struct net_device *dev)
                        break;  /* we scanned the whole ring - do not continue */
 
                i = np->cur_rx % RX_RING;
-               Flags = le32_to_cpu(np->rx_ring[i].FlagLen);
-               len = nv_descr_getlength(&np->rx_ring[i], np->desc_ver);
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                       Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
+                       len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
+               } else {
+                       Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
+                       len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
+               }
 
                dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
                                        dev->name, np->cur_rx, Flags);
@@ -1096,7 +1371,7 @@ static void nv_rx_process(struct net_device *dev)
                 * the performance.
                 */
                pci_unmap_single(np->pci_dev, np->rx_dma[i],
-                               np->rx_skbuff[i]->len,
+                               np->rx_skbuff[i]->end-np->rx_skbuff[i]->data,
                                PCI_DMA_FROMDEVICE);
 
                {
@@ -1114,67 +1389,71 @@ static void nv_rx_process(struct net_device *dev)
                        if (!(Flags & NV_RX_DESCRIPTORVALID))
                                goto next_pkt;
 
-                       if (Flags & NV_RX_MISSEDFRAME) {
-                               np->stats.rx_missed_errors++;
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX_CRCERR) {
-                               np->stats.rx_crc_errors++;
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX_OVERFLOW) {
-                               np->stats.rx_over_errors++;
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX_ERROR4) {
-                               len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
-                               if (len < 0) {
+                       if (Flags & NV_RX_ERROR) {
+                               if (Flags & NV_RX_MISSEDFRAME) {
+                                       np->stats.rx_missed_errors++;
                                        np->stats.rx_errors++;
                                        goto next_pkt;
                                }
-                       }
-                       /* framing errors are soft errors. */
-                       if (Flags & NV_RX_FRAMINGERR) {
-                               if (Flags & NV_RX_SUBSTRACT1) {
-                                       len--;
+                               if (Flags & (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3)) {
+                                       np->stats.rx_errors++;
+                                       goto next_pkt;
+                               }
+                               if (Flags & NV_RX_CRCERR) {
+                                       np->stats.rx_crc_errors++;
+                                       np->stats.rx_errors++;
+                                       goto next_pkt;
+                               }
+                               if (Flags & NV_RX_OVERFLOW) {
+                                       np->stats.rx_over_errors++;
+                                       np->stats.rx_errors++;
+                                       goto next_pkt;
+                               }
+                               if (Flags & NV_RX_ERROR4) {
+                                       len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
+                                       if (len < 0) {
+                                               np->stats.rx_errors++;
+                                               goto next_pkt;
+                                       }
+                               }
+                               /* framing errors are soft errors. */
+                               if (Flags & NV_RX_FRAMINGERR) {
+                                       if (Flags & NV_RX_SUBSTRACT1) {
+                                               len--;
+                                       }
                                }
                        }
                } else {
                        if (!(Flags & NV_RX2_DESCRIPTORVALID))
                                goto next_pkt;
 
-                       if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX2_CRCERR) {
-                               np->stats.rx_crc_errors++;
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX2_OVERFLOW) {
-                               np->stats.rx_over_errors++;
-                               np->stats.rx_errors++;
-                               goto next_pkt;
-                       }
-                       if (Flags & NV_RX2_ERROR4) {
-                               len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
-                               if (len < 0) {
+                       if (Flags & NV_RX2_ERROR) {
+                               if (Flags & (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3)) {
                                        np->stats.rx_errors++;
                                        goto next_pkt;
                                }
-                       }
-                       /* framing errors are soft errors */
-                       if (Flags & NV_RX2_FRAMINGERR) {
-                               if (Flags & NV_RX2_SUBSTRACT1) {
-                                       len--;
+                               if (Flags & NV_RX2_CRCERR) {
+                                       np->stats.rx_crc_errors++;
+                                       np->stats.rx_errors++;
+                                       goto next_pkt;
+                               }
+                               if (Flags & NV_RX2_OVERFLOW) {
+                                       np->stats.rx_over_errors++;
+                                       np->stats.rx_errors++;
+                                       goto next_pkt;
+                               }
+                               if (Flags & NV_RX2_ERROR4) {
+                                       len = nv_getlen(dev, np->rx_skbuff[i]->data, len);
+                                       if (len < 0) {
+                                               np->stats.rx_errors++;
+                                               goto next_pkt;
+                                       }
+                               }
+                               /* framing errors are soft errors */
+                               if (Flags & NV_RX2_FRAMINGERR) {
+                                       if (Flags & NV_RX2_SUBSTRACT1) {
+                                               len--;
+                                       }
                                }
                        }
                        Flags &= NV_RX2_CHECKSUMMASK;
@@ -1204,15 +1483,133 @@ next_pkt:
        }
 }
 
+static void set_bufsize(struct net_device *dev)
+{
+       struct fe_priv *np = netdev_priv(dev);
+
+       if (dev->mtu <= ETH_DATA_LEN)
+               np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
+       else
+               np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
+}
+
 /*
  * nv_change_mtu: dev->change_mtu function
  * Called with dev_base_lock held for read.
  */
 static int nv_change_mtu(struct net_device *dev, int new_mtu)
 {
-       if (new_mtu > ETH_DATA_LEN)
+       struct fe_priv *np = netdev_priv(dev);
+       int old_mtu;
+
+       if (new_mtu < 64 || new_mtu > np->pkt_limit)
                return -EINVAL;
+
+       old_mtu = dev->mtu;
        dev->mtu = new_mtu;
+
+       /* return early if the buffer sizes will not change */
+       if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
+               return 0;
+       if (old_mtu == new_mtu)
+               return 0;
+
+       /* synchronized against open : rtnl_lock() held by caller */
+       if (netif_running(dev)) {
+               u8 __iomem *base = get_hwbase(dev);
+               /*
+                * It seems that the nic preloads valid ring entries into an
+                * internal buffer. The procedure for flushing everything is
+                * guessed, there is probably a simpler approach.
+                * Changing the MTU is a rare event, it shouldn't matter.
+                */
+               disable_irq(dev->irq);
+               spin_lock_bh(&dev->xmit_lock);
+               spin_lock(&np->lock);
+               /* stop engines */
+               nv_stop_rx(dev);
+               nv_stop_tx(dev);
+               nv_txrx_reset(dev);
+               /* drain rx queue */
+               nv_drain_rx(dev);
+               nv_drain_tx(dev);
+               /* reinit driver view of the rx queue */
+               nv_init_rx(dev);
+               nv_init_tx(dev);
+               /* alloc new rx buffers */
+               set_bufsize(dev);
+               if (nv_alloc_rx(dev)) {
+                       if (!np->in_shutdown)
+                               mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+               }
+               /* reinit nic view of the rx queue */
+               writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+               writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
+               if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                       writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+               else
+                       writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
+               writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
+                       base + NvRegRingSizes);
+               pci_push(base);
+               writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+               pci_push(base);
+
+               /* restart rx engine */
+               nv_start_rx(dev);
+               nv_start_tx(dev);
+               spin_unlock(&np->lock);
+               spin_unlock_bh(&dev->xmit_lock);
+               enable_irq(dev->irq);
+       }
+       return 0;
+}
+
+static void nv_copy_mac_to_hw(struct net_device *dev)
+{
+       u8 __iomem *base = get_hwbase(dev);
+       u32 mac[2];
+
+       mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
+                       (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
+       mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
+
+       writel(mac[0], base + NvRegMacAddrA);
+       writel(mac[1], base + NvRegMacAddrB);
+}
+
+/*
+ * nv_set_mac_address: dev->set_mac_address function
+ * Called with rtnl_lock() held.
+ */
+static int nv_set_mac_address(struct net_device *dev, void *addr)
+{
+       struct fe_priv *np = netdev_priv(dev);
+       struct sockaddr *macaddr = (struct sockaddr*)addr;
+
+       if(!is_valid_ether_addr(macaddr->sa_data))
+               return -EADDRNOTAVAIL;
+
+       /* synchronized against open : rtnl_lock() held by caller */
+       memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
+
+       if (netif_running(dev)) {
+               spin_lock_bh(&dev->xmit_lock);
+               spin_lock_irq(&np->lock);
+
+               /* stop rx engine */
+               nv_stop_rx(dev);
+
+               /* set mac address */
+               nv_copy_mac_to_hw(dev);
+
+               /* restart rx engine */
+               nv_start_rx(dev);
+               spin_unlock_irq(&np->lock);
+               spin_unlock_bh(&dev->xmit_lock);
+       } else {
+               nv_copy_mac_to_hw(dev);
+       }
        return 0;
 }
 
@@ -1222,7 +1619,7 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
  */
 static void nv_set_multicast(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
        u32 addr[2];
        u32 mask[2];
@@ -1280,9 +1677,20 @@ static void nv_set_multicast(struct net_device *dev)
        spin_unlock_irq(&np->lock);
 }
 
+/**
+ * nv_update_linkspeed: Setup the MAC according to the link partner
+ * @dev: Network device to be configured
+ *
+ * The function queries the PHY and checks if there is a link partner.
+ * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
+ * set to 10 MBit HD.
+ *
+ * The function returns 0 if there is no link partner and 1 if there is
+ * a good link partner.
+ */
 static int nv_update_linkspeed(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
        int adv, lpa;
        int newls = np->linkspeed;
@@ -1419,13 +1827,11 @@ set_speed:
 static void nv_linkchange(struct net_device *dev)
 {
        if (nv_update_linkspeed(dev)) {
-               if (netif_carrier_ok(dev)) {
-                       nv_stop_rx(dev);
-               } else {
+               if (!netif_carrier_ok(dev)) {
                        netif_carrier_on(dev);
                        printk(KERN_INFO "%s: link up.\n", dev->name);
+                       nv_start_rx(dev);
                }
-               nv_start_rx(dev);
        } else {
                if (netif_carrier_ok(dev)) {
                        netif_carrier_off(dev);
@@ -1452,7 +1858,7 @@ static void nv_link_irq(struct net_device *dev)
 static irqreturn_t nv_nic_irq(int foo, void *data, struct pt_regs *regs)
 {
        struct net_device *dev = (struct net_device *) data;
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
        u32 events;
        int i;
@@ -1467,22 +1873,18 @@ static irqreturn_t nv_nic_irq(int foo, void *data, struct pt_regs *regs)
                if (!(events & np->irqmask))
                        break;
 
-               if (events & (NVREG_IRQ_TX1|NVREG_IRQ_TX2|NVREG_IRQ_TX_ERR)) {
+               spin_lock(&np->lock);
+               nv_tx_done(dev);
+               spin_unlock(&np->lock);
+               
+               nv_rx_process(dev);
+               if (nv_alloc_rx(dev)) {
                        spin_lock(&np->lock);
-                       nv_tx_done(dev);
+                       if (!np->in_shutdown)
+                               mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
                        spin_unlock(&np->lock);
                }
-
-               if (events & (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF)) {
-                       nv_rx_process(dev);
-                       if (nv_alloc_rx(dev)) {
-                               spin_lock(&np->lock);
-                               if (!np->in_shutdown)
-                                       mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
-                               spin_unlock(&np->lock);
-                       }
-               }
-
+               
                if (events & NVREG_IRQ_LINK) {
                        spin_lock(&np->lock);
                        nv_link_irq(dev);
@@ -1524,7 +1926,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data, struct pt_regs *regs)
 static void nv_do_nic_poll(unsigned long data)
 {
        struct net_device *dev = (struct net_device *) data;
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
 
        disable_irq(dev->irq);
@@ -1548,7 +1950,7 @@ static void nv_poll_controller(struct net_device *dev)
 
 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        strcpy(info->driver, "forcedeth");
        strcpy(info->version, FORCEDETH_VERSION);
        strcpy(info->bus_info, pci_name(np->pci_dev));
@@ -1556,7 +1958,7 @@ static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 
 static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        wolinfo->supported = WAKE_MAGIC;
 
        spin_lock_irq(&np->lock);
@@ -1567,7 +1969,7 @@ static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
 
 static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
 
        spin_lock_irq(&np->lock);
@@ -1758,6 +2160,50 @@ static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
        return 0;
 }
 
+#define FORCEDETH_REGS_VER     1
+#define FORCEDETH_REGS_SIZE    0x400 /* 256 32-bit registers */
+
+static int nv_get_regs_len(struct net_device *dev)
+{
+       return FORCEDETH_REGS_SIZE;
+}
+
+static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
+{
+       struct fe_priv *np = netdev_priv(dev);
+       u8 __iomem *base = get_hwbase(dev);
+       u32 *rbuf = buf;
+       int i;
+
+       regs->version = FORCEDETH_REGS_VER;
+       spin_lock_irq(&np->lock);
+       for (i=0;i<FORCEDETH_REGS_SIZE/sizeof(u32);i++)
+               rbuf[i] = readl(base + i*sizeof(u32));
+       spin_unlock_irq(&np->lock);
+}
+
+static int nv_nway_reset(struct net_device *dev)
+{
+       struct fe_priv *np = netdev_priv(dev);
+       int ret;
+
+       spin_lock_irq(&np->lock);
+       if (np->autoneg) {
+               int bmcr;
+
+               bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+               bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+               mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
+
+               ret = 0;
+       } else {
+               ret = -EINVAL;
+       }
+       spin_unlock_irq(&np->lock);
+
+       return ret;
+}
+
 static struct ethtool_ops ops = {
        .get_drvinfo = nv_get_drvinfo,
        .get_link = ethtool_op_get_link,
@@ -1765,11 +2211,15 @@ static struct ethtool_ops ops = {
        .set_wol = nv_set_wol,
        .get_settings = nv_get_settings,
        .set_settings = nv_set_settings,
+       .get_regs_len = nv_get_regs_len,
+       .get_regs = nv_get_regs,
+       .nway_reset = nv_nway_reset,
+       .get_perm_addr = ethtool_op_get_perm_addr,
 };
 
 static int nv_open(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base = get_hwbase(dev);
        int ret, oom, i;
 
@@ -1789,6 +2239,7 @@ static int nv_open(struct net_device *dev)
        writel(0, base + NvRegAdapterControl);
 
        /* 2) initialize descriptor rings */
+       set_bufsize(dev);
        oom = nv_init_ring(dev);
 
        writel(0, base + NvRegLinkSpeed);
@@ -1799,29 +2250,23 @@ static int nv_open(struct net_device *dev)
        np->in_shutdown = 0;
 
        /* 3) set mac address */
-       {
-               u32 mac[2];
-
-               mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
-                               (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
-               mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
-
-               writel(mac[0], base + NvRegMacAddrA);
-               writel(mac[1], base + NvRegMacAddrB);
-       }
+       nv_copy_mac_to_hw(dev);
 
        /* 4) give hw rings */
        writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
-       writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+               writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+       else
+               writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
        writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
                base + NvRegRingSizes);
 
        /* 5) continue setup */
        writel(np->linkspeed, base + NvRegLinkSpeed);
        writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);
-       writel(np->desc_ver, base + NvRegTxRxControl);
+       writel(np->txrxctl_bits, base + NvRegTxRxControl);
        pci_push(base);
-       writel(NVREG_TXRXCTL_BIT1|np->desc_ver, base + NvRegTxRxControl);
+       writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
        reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
                        NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX,
                        KERN_INFO "open: SetupReg5, Bit 31 remained off\n");
@@ -1834,14 +2279,21 @@ static int nv_open(struct net_device *dev)
        writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
        writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
        writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
-       writel(NVREG_OFFLOAD_NORMAL, base + NvRegOffloadConfig);
+       writel(np->rx_buf_sz, base + NvRegOffloadConfig);
 
        writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
        get_random_bytes(&i, sizeof(i));
        writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed);
        writel(NVREG_UNKSETUP1_VAL, base + NvRegUnknownSetupReg1);
        writel(NVREG_UNKSETUP2_VAL, base + NvRegUnknownSetupReg2);
-       writel(NVREG_POLL_DEFAULT, base + NvRegPollingInterval);
+       if (poll_interval == -1) {
+               if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
+                       writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
+               else
+                       writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
+       }
+       else
+               writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
        writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
        writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
                        base + NvRegAdapterControl);
@@ -1885,6 +2337,9 @@ static int nv_open(struct net_device *dev)
                writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
                dprintk(KERN_INFO "startup: got 0x%08x.\n", miistat);
        }
+       /* set linkspeed to invalid value, thus force nv_update_linkspeed
+        * to init hw */
+       np->linkspeed = 0;
        ret = nv_update_linkspeed(dev);
        nv_start_rx(dev);
        nv_start_tx(dev);
@@ -1907,7 +2362,7 @@ out_drain:
 
 static int nv_close(struct net_device *dev)
 {
-       struct fe_priv *np = get_nvpriv(dev);
+       struct fe_priv *np = netdev_priv(dev);
        u8 __iomem *base;
 
        spin_lock_irq(&np->lock);
@@ -1939,6 +2394,12 @@ static int nv_close(struct net_device *dev)
        if (np->wolenabled)
                nv_start_rx(dev);
 
+       /* special op: write back the misordered MAC address - otherwise
+        * the next nv_probe would see a wrong address.
+        */
+       writel(np->orig_mac[0], base + NvRegMacAddrA);
+       writel(np->orig_mac[1], base + NvRegMacAddrB);
+
        /* FIXME: power down nic */
 
        return 0;
@@ -1957,7 +2418,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        if (!dev)
                goto out;
 
-       np = get_nvpriv(dev);
+       np = netdev_priv(dev);
        np->pci_dev = pci_dev;
        spin_lock_init(&np->lock);
        SET_MODULE_OWNER(dev);
@@ -2003,30 +2464,68 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        }
 
        /* handle different descriptor versions */
-       if (pci_dev->device == PCI_DEVICE_ID_NVIDIA_NVENET_1 ||
-               pci_dev->device == PCI_DEVICE_ID_NVIDIA_NVENET_2 ||
-               pci_dev->device == PCI_DEVICE_ID_NVIDIA_NVENET_3)
-               np->desc_ver = DESC_VER_1;
-       else
+       if (id->driver_data & DEV_HAS_HIGH_DMA) {
+               /* packet format 3: supports 40-bit addressing */
+               np->desc_ver = DESC_VER_3;
+               if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
+                       printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
+                                       pci_name(pci_dev));
+               } else {
+                       dev->features |= NETIF_F_HIGHDMA;
+               }
+               np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
+       } else if (id->driver_data & DEV_HAS_LARGEDESC) {
+               /* packet format 2: supports jumbo frames */
                np->desc_ver = DESC_VER_2;
+               np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
+       } else {
+               /* original packet format */
+               np->desc_ver = DESC_VER_1;
+               np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
+       }
+
+       np->pkt_limit = NV_PKTLIMIT_1;
+       if (id->driver_data & DEV_HAS_LARGEDESC)
+               np->pkt_limit = NV_PKTLIMIT_2;
+
+       if (id->driver_data & DEV_HAS_CHECKSUM) {
+               np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
+               dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
+#ifdef NETIF_F_TSO
+               dev->features |= NETIF_F_TSO;
+#endif
+       }
 
        err = -ENOMEM;
        np->base = ioremap(addr, NV_PCI_REGSZ);
        if (!np->base)
                goto out_relreg;
        dev->base_addr = (unsigned long)np->base;
+
        dev->irq = pci_dev->irq;
-       np->rx_ring = pci_alloc_consistent(pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
-                                               &np->ring_addr);
-       if (!np->rx_ring)
-               goto out_unmap;
-       np->tx_ring = &np->rx_ring[RX_RING];
+
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+               np->rx_ring.orig = pci_alloc_consistent(pci_dev,
+                                       sizeof(struct ring_desc) * (RX_RING + TX_RING),
+                                       &np->ring_addr);
+               if (!np->rx_ring.orig)
+                       goto out_unmap;
+               np->tx_ring.orig = &np->rx_ring.orig[RX_RING];
+       } else {
+               np->rx_ring.ex = pci_alloc_consistent(pci_dev,
+                                       sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+                                       &np->ring_addr);
+               if (!np->rx_ring.ex)
+                       goto out_unmap;
+               np->tx_ring.ex = &np->rx_ring.ex[RX_RING];
+       }
 
        dev->open = nv_open;
        dev->stop = nv_close;
        dev->hard_start_xmit = nv_start_xmit;
        dev->get_stats = nv_get_stats;
        dev->change_mtu = nv_change_mtu;
+       dev->set_mac_address = nv_set_mac_address;
        dev->set_multicast_list = nv_set_multicast;
 #ifdef CONFIG_NET_POLL_CONTROLLER
        dev->poll_controller = nv_poll_controller;
@@ -2048,8 +2547,9 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
        dev->dev_addr[4] = (np->orig_mac[0] >>  8) & 0xff;
        dev->dev_addr[5] = (np->orig_mac[0] >>  0) & 0xff;
+       memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
 
-       if (!is_valid_ether_addr(dev->dev_addr)) {
+       if (!is_valid_ether_addr(dev->perm_addr)) {
                /*
                 * Bad mac address. At least one bios sets the mac address
                 * to 01:23:45:67:89:ab
@@ -2074,18 +2574,15 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        np->wolenabled = 0;
 
        if (np->desc_ver == DESC_VER_1) {
-               np->tx_flags = NV_TX_LASTPACKET|NV_TX_VALID;
-               if (id->driver_data & DEV_NEED_LASTPACKET1)
-                       np->tx_flags |= NV_TX_LASTPACKET1;
+               np->tx_flags = NV_TX_VALID;
        } else {
-               np->tx_flags = NV_TX2_LASTPACKET|NV_TX2_VALID;
-               if (id->driver_data & DEV_NEED_LASTPACKET1)
-                       np->tx_flags |= NV_TX2_LASTPACKET1;
-       }
-       if (id->driver_data & DEV_IRQMASK_1)
-               np->irqmask = NVREG_IRQMASK_WANTED_1;
-       if (id->driver_data & DEV_IRQMASK_2)
-               np->irqmask = NVREG_IRQMASK_WANTED_2;
+               np->tx_flags = NV_TX2_VALID;
+       }
+       if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
+               np->irqmask = NVREG_IRQMASK_THROUGHPUT;
+       else
+               np->irqmask = NVREG_IRQMASK_CPU;
+
        if (id->driver_data & DEV_NEED_TIMERIRQ)
                np->irqmask |= NVREG_IRQ_TIMER;
        if (id->driver_data & DEV_NEED_LINKTIMER) {
@@ -2098,16 +2595,17 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        }
 
        /* find a suitable phy */
-       for (i = 1; i < 32; i++) {
+       for (i = 1; i <= 32; i++) {
                int id1, id2;
+               int phyaddr = i & 0x1F;
 
                spin_lock_irq(&np->lock);
-               id1 = mii_rw(dev, i, MII_PHYSID1, MII_READ);
+               id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
                spin_unlock_irq(&np->lock);
                if (id1 < 0 || id1 == 0xffff)
                        continue;
                spin_lock_irq(&np->lock);
-               id2 = mii_rw(dev, i, MII_PHYSID2, MII_READ);
+               id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
                spin_unlock_irq(&np->lock);
                if (id2 < 0 || id2 == 0xffff)
                        continue;
@@ -2115,23 +2613,19 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
                id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
                id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
                dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n",
-                               pci_name(pci_dev), id1, id2, i);
-               np->phyaddr = i;
+                       pci_name(pci_dev), id1, id2, phyaddr);
+               np->phyaddr = phyaddr;
                np->phy_oui = id1 | id2;
                break;
        }
-       if (i == 32) {
-               /* PHY in isolate mode? No phy attached and user wants to
-                * test loopback? Very odd, but can be correct.
-                */
+       if (i == 33) {
                printk(KERN_INFO "%s: open: Could not find a valid PHY.\n",
-                               pci_name(pci_dev));
-       }
-
-       if (i != 32) {
-               /* reset it */
-               phy_init(dev);
+                      pci_name(pci_dev));
+               goto out_freering;
        }
+       
+       /* reset it */
+       phy_init(dev);
 
        /* set default link speed settings */
        np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
@@ -2150,8 +2644,12 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        return 0;
 
 out_freering:
-       pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
-                               np->rx_ring, np->ring_addr);
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+               pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
+                                   np->rx_ring.orig, np->ring_addr);
+       else
+               pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+                                   np->rx_ring.ex, np->ring_addr);
        pci_set_drvdata(pci_dev, NULL);
 out_unmap:
        iounmap(get_hwbase(dev));
@@ -2168,19 +2666,15 @@ out:
 static void __devexit nv_remove(struct pci_dev *pci_dev)
 {
        struct net_device *dev = pci_get_drvdata(pci_dev);
-       struct fe_priv *np = get_nvpriv(dev);
-       u8 __iomem *base = get_hwbase(dev);
+       struct fe_priv *np = netdev_priv(dev);
 
        unregister_netdev(dev);
 
-       /* special op: write back the misordered MAC address - otherwise
-        * the next nv_probe would see a wrong address.
-        */
-       writel(np->orig_mac[0], base + NvRegMacAddrA);
-       writel(np->orig_mac[1], base + NvRegMacAddrB);
-
        /* free all structures */
-       pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring, np->ring_addr);
+       if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+               pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring.orig, np->ring_addr);
+       else
+               pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING), np->rx_ring.ex, np->ring_addr);
        iounmap(get_hwbase(dev));
        pci_release_regions(pci_dev);
        pci_disable_device(pci_dev);
@@ -2190,81 +2684,64 @@ static void __devexit nv_remove(struct pci_dev *pci_dev)
 
 static struct pci_device_id pci_tbl[] = {
        {       /* nForce Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_1,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_IRQMASK_1|DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
        },
        {       /* nForce2 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_2,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_2),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
        },
        {       /* nForce3 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_3,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_3),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
        },
        {       /* nForce3 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_4,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_4),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
        },
        {       /* nForce3 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_5,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_5),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
        },
        {       /* nForce3 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_6,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_6),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
        },
        {       /* nForce3 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_7,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_7),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
        },
        {       /* CK804 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_8,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
        },
        {       /* CK804 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_9,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
        },
        {       /* MCP04 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_10,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
        },
        {       /* MCP04 Ethernet Controller */
-               .vendor = PCI_VENDOR_ID_NVIDIA,
-               .device = PCI_DEVICE_ID_NVIDIA_NVENET_11,
-               .subvendor = PCI_ANY_ID,
-               .subdevice = PCI_ANY_ID,
-               .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ,
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
+       },
+       {       /* MCP51 Ethernet Controller */
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
+       },
+       {       /* MCP51 Ethernet Controller */
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
+       },
+       {       /* MCP55 Ethernet Controller */
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
+       },
+       {       /* MCP55 Ethernet Controller */
+               PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
+               .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,
        },
        {0,},
 };
@@ -2290,6 +2767,10 @@ static void __exit exit_nic(void)
 
 module_param(max_interrupt_work, int, 0);
 MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
+module_param(optimization_mode, int, 0);
+MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer.");
+module_param(poll_interval, int, 0);
+MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
 
 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");