1 files changed, 269 insertions, 257 deletions

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index ab25c225a07..514cb393f48 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -36,7 +36,6 @@
 #include "netxen_nic_hw.h"
 
 #include "netxen_nic.h"
-#define DEFINE_GLOBAL_RECV_CRB
 #include "netxen_nic_phan_reg.h"
 
 #include <linux/dma-mapping.h>
@@ -94,6 +93,67 @@ MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
 struct workqueue_struct *netxen_workq;
 static void netxen_watchdog(unsigned long);
 
+static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
+                                                        uint32_t crb_producer)
+{
+        switch (adapter->portnum) {
+                case 0:
+                        writel(crb_producer, NETXEN_CRB_NORMALIZE
+                                        (adapter, CRB_CMD_PRODUCER_OFFSET));
+                        return;
+                case 1:
+                        writel(crb_producer, NETXEN_CRB_NORMALIZE
+                                        (adapter, CRB_CMD_PRODUCER_OFFSET_1));
+                        return;
+                case 2:
+                        writel(crb_producer, NETXEN_CRB_NORMALIZE
+                                        (adapter, CRB_CMD_PRODUCER_OFFSET_2));
+                        return;
+                case 3:
+                        writel(crb_producer, NETXEN_CRB_NORMALIZE
+                                        (adapter, CRB_CMD_PRODUCER_OFFSET_3));
+                        return;
+                default:
+                        printk(KERN_WARNING "We tried to update "
+                                        "CRB_CMD_PRODUCER_OFFSET for invalid "
+                                        "PCI function id %d\n",
+                                        adapter->portnum);
+                        return;
+        }
+}
+
+static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
+                                                        u32 crb_consumer)
+{
+        switch (adapter->portnum) {
+                case 0:
+                        writel(crb_consumer, NETXEN_CRB_NORMALIZE
+                                (adapter, CRB_CMD_CONSUMER_OFFSET));
+                        return;
+                case 1:
+                        writel(crb_consumer, NETXEN_CRB_NORMALIZE
+                                (adapter, CRB_CMD_CONSUMER_OFFSET_1));
+                        return;
+                case 2:
+                        writel(crb_consumer, NETXEN_CRB_NORMALIZE
+                                (adapter, CRB_CMD_CONSUMER_OFFSET_2));
+                        return;
+                case 3:
+                        writel(crb_consumer, NETXEN_CRB_NORMALIZE
+                                (adapter, CRB_CMD_CONSUMER_OFFSET_3));
+                        return;
+                default:
+                        printk(KERN_WARNING "We tried to update "
+                                        "CRB_CMD_PRODUCER_OFFSET for invalid "
+                                        "PCI function id %d\n",
+                                        adapter->portnum);
+                        return;
+        }
+}
+
+#define ADAPTER_LIST_SIZE 12
+int netxen_cards_found;
+
 /*
  * netxen_nic_probe()
  *
@@ -111,26 +171,26 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         struct net_device *netdev = NULL;
         struct netxen_adapter *adapter = NULL;
-        struct netxen_port *port = NULL;
         void __iomem *mem_ptr0 = NULL;
         void __iomem *mem_ptr1 = NULL;
         void __iomem *mem_ptr2 = NULL;
 
         u8 __iomem *db_ptr = NULL;
         unsigned long mem_base, mem_len, db_base, db_len;
-        int pci_using_dac, i, err;
+        int pci_using_dac, i = 0, err;
         int ring;
         struct netxen_recv_context *recv_ctx = NULL;
         struct netxen_rcv_desc_ctx *rcv_desc = NULL;
         struct netxen_cmd_buffer *cmd_buf_arr = NULL;
         u64 mac_addr[FLASH_NUM_PORTS + 1];
-        int valid_mac = 0;
+        static int valid_mac = 0;
+        static int netxen_probe_flag;
+        int pci_func_id = PCI_FUNC(pdev->devfn);
 
         printk(KERN_INFO "%s \n", netxen_nic_driver_string);
-        /* In current scheme, we use only PCI function 0 */
-        if (PCI_FUNC(pdev->devfn) != 0) {
-                DPRINTK(ERR, "NetXen function %d will not be enabled.\n",
-                        PCI_FUNC(pdev->devfn));
+        if (pdev->class != 0x020000) {
+                printk(KERN_ERR"NetXen function %d, class %x will not"
+                                "be enabled.\n",pci_func_id, pdev->class);
                 return -ENODEV;
         }
         if ((err = pci_enable_device(pdev)))
@@ -157,6 +217,22 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                 pci_using_dac = 0;
         }
 
+
+        netdev = alloc_etherdev(sizeof(struct netxen_adapter));
+        if(!netdev) {
+                printk(KERN_ERR"%s: Failed to allocate memory for the "
+                                "device block.Check system memory resource"
+                                " usage.\n", netxen_nic_driver_name);
+                goto err_out_free_res;
+        }
+
+        SET_MODULE_OWNER(netdev);
+        SET_NETDEV_DEV(netdev, &pdev->dev);
+
+        adapter = netdev->priv;
+        memset(adapter, 0 , sizeof(struct netxen_adapter));
+
+        adapter->ahw.pdev = pdev;
         /* remap phys address */
         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
         mem_len = pci_resource_len(pdev, 0);
@@ -198,23 +274,6 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         }
         DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
 
-/*
- *      Allocate a adapter structure which will manage all the initialization
- *      as well as the common resources for all ports...
- *      all the ports will have pointer to this adapter as well as Adapter
- *      will have pointers of all the ports structures.
- */
-
-        /* One adapter structure for all 4 ports....   */
-        adapter = kzalloc(sizeof(struct netxen_adapter), GFP_KERNEL);
-        if (adapter == NULL) {
-                printk(KERN_ERR "%s: Could not allocate adapter memory:%d\n",
-                       netxen_nic_driver_name,
-                       (int)sizeof(struct netxen_adapter));
-                err = -ENOMEM;
-                goto err_out_dbunmap;
-        }
-
         adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS;
         adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
         adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
@@ -222,6 +281,42 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         pci_set_drvdata(pdev, adapter);
 
+        adapter->netdev  = netdev;
+        adapter->pdev    = pdev;
+        adapter->portnum = pci_func_id;
+
+        netdev->open               = netxen_nic_open;
+        netdev->stop               = netxen_nic_close;
+        netdev->hard_start_xmit    = netxen_nic_xmit_frame;
+        netdev->set_multicast_list = netxen_nic_set_multi;
+        netdev->set_mac_address    = netxen_nic_set_mac;
+        netdev->change_mtu         = netxen_nic_change_mtu;
+        netdev->tx_timeout         = netxen_tx_timeout;
+        netdev->watchdog_timeo     = HZ;
+
+        netxen_nic_change_mtu(netdev, netdev->mtu);
+
+        SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
+        netdev->poll = netxen_nic_poll;
+        netdev->weight = NETXEN_NETDEV_WEIGHT;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        netdev->poll_controller = netxen_nic_poll_controller;
+#endif
+        /* ScatterGather support */
+        netdev->features = NETIF_F_SG;
+        netdev->features |= NETIF_F_IP_CSUM;
+        netdev->features |= NETIF_F_TSO;
+
+        if (pci_using_dac)
+                netdev->features |= NETIF_F_HIGHDMA;
+
+        if (pci_enable_msi(pdev)) {
+                adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
+                printk(KERN_WARNING "%s: unable to allocate MSI interrupt"
+                       " error\n", netxen_nic_driver_name);
+        } else
+                adapter->flags |= NETXEN_NIC_MSI_ENABLED;
+
         cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
         if (cmd_buf_arr == NULL) {
                 printk(KERN_ERR
@@ -288,9 +383,11 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         spin_lock_init(&adapter->lock);
         netxen_initialize_adapter_sw(adapter);  /* initialize the buffers in adapter */
 #ifdef CONFIG_IA64
-        netxen_pinit_from_rom(adapter, 0);
-        udelay(500);
-        netxen_load_firmware(adapter);
+        if(netxen_probe_flag == 0) {
+                netxen_pinit_from_rom(adapter, 0);
+                udelay(500);
+                netxen_load_firmware(adapter);
+        }
 #endif
 
         /*
@@ -304,6 +401,10 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
          */
         netxen_initialize_adapter_hw(adapter);  /* initialize the adapter */
 
+        if (adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
+                if (pci_func_id >= 2)
+                        adapter->portnum = pci_func_id - 2;
+
         netxen_initialize_adapter_ops(adapter);
 
         init_timer(&adapter->watchdog_timer);
@@ -315,12 +416,8 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         adapter->proc_cmd_buf_counter = 0;
         adapter->ahw.revision_id = nx_p2_id;
 
-        if (pci_enable_msi(pdev)) {
-                adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
-                printk(KERN_WARNING "%s: unable to allocate MSI interrupt"
-                       " error\n", netxen_nic_driver_name);
-        } else
-                adapter->flags |= NETXEN_NIC_MSI_ENABLED;
+        netxen_nic_update_cmd_producer(adapter, 0);
+        netxen_nic_update_cmd_consumer(adapter, 0);
 
         if (netxen_is_flash_supported(adapter) == 0 &&
             netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
@@ -328,6 +425,34 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         else
                 valid_mac = 0;
 
+        if (valid_mac) {
+                unsigned char *p = (unsigned char *)&mac_addr[i];
+                netdev->dev_addr[0] = *(p + 5);
+                netdev->dev_addr[1] = *(p + 4);
+                netdev->dev_addr[2] = *(p + 3);
+                netdev->dev_addr[3] = *(p + 2);
+                netdev->dev_addr[4] = *(p + 1);
+                netdev->dev_addr[5] = *(p + 0);
+
+                memcpy(netdev->perm_addr, netdev->dev_addr,
+                        netdev->addr_len);
+                if (!is_valid_ether_addr(netdev->perm_addr)) {
+                        printk(KERN_ERR "%s: Bad MAC address "
+                                "%02x:%02x:%02x:%02x:%02x:%02x.\n",
+                                netxen_nic_driver_name,
+                                netdev->dev_addr[0],
+                                netdev->dev_addr[1],
+                                netdev->dev_addr[2],
+                                netdev->dev_addr[3],
+                                netdev->dev_addr[4],
+                                netdev->dev_addr[5]);
+                } else {
+                        if (adapter->macaddr_set)
+                                adapter->macaddr_set(adapter,
+                                                        netdev->dev_addr);
+                }
+        }
+
         /*
          * Initialize all the CRB registers here.
          */
@@ -337,140 +462,62 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         /* do this before waking up pegs so that we have valid dummy dma addr */
         err = netxen_initialize_adapter_offload(adapter);
-        if (err) {
+        if (err) 
                 goto err_out_free_dev;
-        }
-
-        /* Unlock the HW, prompting the boot sequence */
-        writel(1,
-               NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
-
-        /* Handshake with the card before we register the devices. */
-        netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
-
-        /* initialize the all the ports */
-        adapter->active_ports = 0;
-
-        for (i = 0; i < adapter->ahw.max_ports; i++) {
-                netdev = alloc_etherdev(sizeof(struct netxen_port));
-                if (!netdev) {
-                        printk(KERN_ERR "%s: could not allocate netdev for port"
-                               " %d\n", netxen_nic_driver_name, i + 1);
-                        goto err_out_free_dev;
-                }
 
-                SET_MODULE_OWNER(netdev);
-                SET_NETDEV_DEV(netdev, &pdev->dev);
-
-                port = netdev_priv(netdev);
-                port->netdev = netdev;
-                port->pdev = pdev;
-                port->adapter = adapter;
-                port->portnum = i;      /* Gigabit port number from 0-3 */
-
-                netdev->open = netxen_nic_open;
-                netdev->stop = netxen_nic_close;
-                netdev->hard_start_xmit = netxen_nic_xmit_frame;
-                netdev->get_stats = netxen_nic_get_stats;
-                netdev->set_multicast_list = netxen_nic_set_multi;
-                netdev->set_mac_address = netxen_nic_set_mac;
-                netdev->change_mtu = netxen_nic_change_mtu;
-                netdev->tx_timeout = netxen_tx_timeout;
-                netdev->watchdog_timeo = HZ;
-
-                netxen_nic_change_mtu(netdev, netdev->mtu);
-
-                SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
-                netdev->poll = netxen_nic_poll;
-                netdev->weight = NETXEN_NETDEV_WEIGHT;
-#ifdef CONFIG_NET_POLL_CONTROLLER
-                netdev->poll_controller = netxen_nic_poll_controller;
-#endif
-                /* ScatterGather support */
-                netdev->features = NETIF_F_SG;
-                netdev->features |= NETIF_F_IP_CSUM;
-                netdev->features |= NETIF_F_TSO;
-
-                if (pci_using_dac)
-                        netdev->features |= NETIF_F_HIGHDMA;
-
-                if (valid_mac) {
-                        unsigned char *p = (unsigned char *)&mac_addr[i];
-                        netdev->dev_addr[0] = *(p + 5);
-                        netdev->dev_addr[1] = *(p + 4);
-                        netdev->dev_addr[2] = *(p + 3);
-                        netdev->dev_addr[3] = *(p + 2);
-                        netdev->dev_addr[4] = *(p + 1);
-                        netdev->dev_addr[5] = *(p + 0);
-
-                        memcpy(netdev->perm_addr, netdev->dev_addr,
-                               netdev->addr_len);
-                        if (!is_valid_ether_addr(netdev->perm_addr)) {
-                                printk(KERN_ERR "%s: Bad MAC address "
-                                       "%02x:%02x:%02x:%02x:%02x:%02x.\n",
-                                       netxen_nic_driver_name,
-                                       netdev->dev_addr[0],
-                                       netdev->dev_addr[1],
-                                       netdev->dev_addr[2],
-                                       netdev->dev_addr[3],
-                                       netdev->dev_addr[4],
-                                       netdev->dev_addr[5]);
-                        } else {
-                                if (adapter->macaddr_set)
-                                        adapter->macaddr_set(port,
-                                                             netdev->dev_addr);
-                        }
-                }
-                INIT_WORK(&port->tx_timeout_task, netxen_tx_timeout_task);
-                netif_carrier_off(netdev);
-                netif_stop_queue(netdev);
+        if (netxen_probe_flag == 0) {
+                /* Unlock the HW, prompting the boot sequence */
+                writel(1,
+                        NETXEN_CRB_NORMALIZE(adapter,
+                                NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
+                /* Handshake with the card before we register the devices. */
+                netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
+        }
 
-                if ((err = register_netdev(netdev))) {
-                        printk(KERN_ERR "%s: register_netdev failed port #%d"
-                               " aborting\n", netxen_nic_driver_name, i + 1);
-                        err = -EIO;
-                        free_netdev(netdev);
-                        goto err_out_free_dev;
-                }
-                adapter->port_count++;
-                adapter->port[i] = port;
+        if(netxen_probe_flag == 0) {
+                writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
+                netxen_pinit_from_rom(adapter, 0);
+                udelay(500);
+                netxen_load_firmware(adapter);
+                netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
         }
-        writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
-        netxen_pinit_from_rom(adapter, 0);
-        udelay(500);
-        netxen_load_firmware(adapter);
-        netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
         /*
          * delay a while to ensure that the Pegs are up & running.
          * Otherwise, we might see some flaky behaviour.
          */
         udelay(100);
+        INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
+        netif_carrier_off(netdev);
+        netif_stop_queue(netdev);
+
+        if((err = register_netdev(netdev)))
+                DPRINTK(1, ERR, "register_netdev failed port #%d"
+                                " aborting\n", i+1);
 
         switch (adapter->ahw.board_type) {
-        case NETXEN_NIC_GBE:
-                printk("%s: QUAD GbE board initialized\n",
-                       netxen_nic_driver_name);
-                break;
+                case NETXEN_NIC_GBE:
+                        printk(KERN_INFO "%s: QUAD GbE board initialized\n",
+                               netxen_nic_driver_name);
+                        break;
 
-        case NETXEN_NIC_XGBE:
-                printk("%s: XGbE board initialized\n", netxen_nic_driver_name);
-                break;
+                case NETXEN_NIC_XGBE:
+                        printk(KERN_INFO "%s: XGbE board initialized\n", 
+                                        netxen_nic_driver_name);
+                        break;
         }
 
         adapter->driver_mismatch = 0;
+        if(netxen_probe_flag == 0)
+                netxen_probe_flag ++;
 
         return 0;
 
       err_out_free_dev:
         if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
                 pci_disable_msi(pdev);
-        for (i = 0; i < adapter->port_count; i++) {
-                port = adapter->port[i];
-                if ((port) && (port->netdev)) {
-                        unregister_netdev(port->netdev);
-                        free_netdev(port->netdev);
-                }
-        }
+
+        unregister_netdev(adapter->netdev);
+        free_netdev(adapter->netdev);
 
         netxen_free_adapter_offload(adapter);
 
@@ -491,7 +538,6 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         pci_set_drvdata(pdev, NULL);
         kfree(adapter);
 
-      err_out_dbunmap:
         if (db_ptr)
                 iounmap(db_ptr);
 
@@ -513,35 +559,32 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 static void __devexit netxen_nic_remove(struct pci_dev *pdev)
 {
         struct netxen_adapter *adapter;
-        struct netxen_port *port;
+        struct net_device *netdev;
         struct netxen_rx_buffer *buffer;
         struct netxen_recv_context *recv_ctx;
         struct netxen_rcv_desc_ctx *rcv_desc;
         int i;
         int ctxid, ring;
 
-        adapter = pci_get_drvdata(pdev);
+        netdev = pci_get_drvdata(pdev);
+        adapter = netdev_priv(netdev);
         if (adapter == NULL)
                 return;
 
+        if (adapter->stop_port)
+                adapter->stop_port(adapter);
+
         if (adapter->irq)
                 free_irq(adapter->irq, adapter);
-        netxen_nic_stop_all_ports(adapter);
         /* leave the hw in the same state as reboot */
         writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
         netxen_pinit_from_rom(adapter, 0);
-        udelay(500);
         netxen_load_firmware(adapter);
         netxen_free_adapter_offload(adapter);
 
-        mdelay(1000);           /* Delay for a while to drain the DMA engines */
-        for (i = 0; i < adapter->port_count; i++) {
-                port = adapter->port[i];
-                if ((port) && (port->netdev)) {
-                        unregister_netdev(port->netdev);
-                        free_netdev(port->netdev);
-                }
-        }
+        udelay(500);
+        unregister_netdev(netdev);
+        free_netdev(netdev);
 
         if ((adapter->flags & NETXEN_NIC_MSI_ENABLED))
                 pci_disable_msi(pdev);
@@ -585,8 +628,7 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
  */
 static int netxen_nic_open(struct net_device *netdev)
 {
-        struct netxen_port *port = netdev_priv(netdev);
-        struct netxen_adapter *adapter = port->adapter;
+        struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv;
         int err = 0;
         int ctx, ring;
 
@@ -610,9 +652,9 @@ static int netxen_nic_open(struct net_device *netdev)
                         return err;
                 }
                 if (adapter->init_port
-                    && adapter->init_port(adapter, port->portnum) != 0) {
+                    && adapter->init_port(adapter, adapter->portnum) != 0) {
                         printk(KERN_ERR "%s: Failed to initialize port %d\n",
-                               netxen_nic_driver_name, port->portnum);
+                               netxen_nic_driver_name, adapter->portnum);
                         netxen_free_hw_resources(adapter);
                         return -EIO;
                 }
@@ -632,23 +674,20 @@ static int netxen_nic_open(struct net_device *netdev)
 
                 adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
         }
-        adapter->active_ports++;
-        if (adapter->active_ports == 1) {
-                if (!adapter->driver_mismatch)
-                        mod_timer(&adapter->watchdog_timer, jiffies);
+        if (!adapter->driver_mismatch)
+                mod_timer(&adapter->watchdog_timer, jiffies);
 
-                netxen_nic_enable_int(adapter);
-        }
+        netxen_nic_enable_int(adapter);
 
         /* Done here again so that even if phantom sw overwrote it,
          * we set it */
         if (adapter->macaddr_set)
-                adapter->macaddr_set(port, netdev->dev_addr);
-        netxen_nic_set_link_parameters(port);
+                adapter->macaddr_set(adapter, netdev->dev_addr);
+        netxen_nic_set_link_parameters(adapter);
 
         netxen_nic_set_multi(netdev);
         if (adapter->set_mtu)
-                adapter->set_mtu(port, netdev->mtu);
+                adapter->set_mtu(adapter, netdev->mtu);
 
         if (!adapter->driver_mismatch)
                 netif_start_queue(netdev);
@@ -661,8 +700,7 @@ static int netxen_nic_open(struct net_device *netdev)
  */
 static int netxen_nic_close(struct net_device *netdev)
 {
-        struct netxen_port *port = netdev_priv(netdev);
-        struct netxen_adapter *adapter = port->adapter;
+        struct netxen_adapter *adapter = netdev_priv(netdev);
         int i, j;
         struct netxen_cmd_buffer *cmd_buff;
         struct netxen_skb_frag *buffrag;
@@ -670,47 +708,43 @@ static int netxen_nic_close(struct net_device *netdev)
         netif_carrier_off(netdev);
         netif_stop_queue(netdev);
 
-        adapter->active_ports--;
-
-        if (!adapter->active_ports) {
-                netxen_nic_disable_int(adapter);
-                cmd_buff = adapter->cmd_buf_arr;
-                for (i = 0; i < adapter->max_tx_desc_count; i++) {
-                        buffrag = cmd_buff->frag_array;
+        netxen_nic_disable_int(adapter);
+        if (adapter->irq)
+                free_irq(adapter->irq, adapter);
+        
+        cmd_buff = adapter->cmd_buf_arr;
+        for (i = 0; i < adapter->max_tx_desc_count; i++) {
+                buffrag = cmd_buff->frag_array;
+                if (buffrag->dma) {
+                        pci_unmap_single(adapter->pdev, buffrag->dma,
+                                         buffrag->length, PCI_DMA_TODEVICE);
+                        buffrag->dma = (u64) NULL;
+                }
+                for (j = 0; j < cmd_buff->frag_count; j++) {
+                        buffrag++;
                         if (buffrag->dma) {
-                                pci_unmap_single(port->pdev, buffrag->dma,
-                                                 buffrag->length,
-                                                 PCI_DMA_TODEVICE);
+                                pci_unmap_page(adapter->pdev, buffrag->dma,
+                                               buffrag->length, 
+                                               PCI_DMA_TODEVICE);
                                 buffrag->dma = (u64) NULL;
                         }
-                        for (j = 0; j < cmd_buff->frag_count; j++) {
-                                buffrag++;
-                                if (buffrag->dma) {
-                                        pci_unmap_page(port->pdev,
-                                                       buffrag->dma,
-                                                       buffrag->length,
-                                                       PCI_DMA_TODEVICE);
-                                        buffrag->dma = (u64) NULL;
-                                }
-                        }
-                        /* Free the skb we received in netxen_nic_xmit_frame */
-                        if (cmd_buff->skb) {
-                                dev_kfree_skb_any(cmd_buff->skb);
-                                cmd_buff->skb = NULL;
-                        }
-                        cmd_buff++;
                 }
-                FLUSH_SCHEDULED_WORK();
-                del_timer_sync(&adapter->watchdog_timer);
+                /* Free the skb we received in netxen_nic_xmit_frame */
+                if (cmd_buff->skb) {
+                        dev_kfree_skb_any(cmd_buff->skb);
+                        cmd_buff->skb = NULL;
+                }
+                cmd_buff++;
         }
+        FLUSH_SCHEDULED_WORK();
+        del_timer_sync(&adapter->watchdog_timer);
 
         return 0;
 }
 
 static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 {
-        struct netxen_port *port = netdev_priv(netdev);
-        struct netxen_adapter *adapter = port->adapter;
+        struct netxen_adapter *adapter = netdev_priv(netdev);
         struct netxen_hardware_context *hw = &adapter->ahw;
         unsigned int first_seg_len = skb->len - skb->data_len;
         struct netxen_skb_frag *buffrag;
@@ -728,12 +762,12 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         u32 last_cmd_consumer = 0;
         int no_of_desc;
 
-        port->stats.xmitcalled++;
+        adapter->stats.xmitcalled++;
         frag_count = skb_shinfo(skb)->nr_frags + 1;
 
         if (unlikely(skb->len <= 0)) {
                 dev_kfree_skb_any(skb);
-                port->stats.badskblen++;
+                adapter->stats.badskblen++;
                 return NETDEV_TX_OK;
         }
 
@@ -742,7 +776,7 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
                        "too large, can handle only %d frags\n",
                        netxen_nic_driver_name, netdev->name,
                        frag_count, MAX_BUFFERS_PER_CMD);
-                port->stats.txdropped++;
+                adapter->stats.txdropped++;
                 if ((++dropped_packet & 0xff) == 0xff)
                         printk("%s: %s droppped packets = %d\n",
                                netxen_nic_driver_name, netdev->name,
@@ -759,7 +793,7 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
          */
       retry_getting_window:
         spin_lock_bh(&adapter->tx_lock);
-        if (adapter->total_threads == MAX_XMIT_PRODUCERS) {
+        if (adapter->total_threads >= MAX_XMIT_PRODUCERS) {
                 spin_unlock_bh(&adapter->tx_lock);
                 /*
                  * Yield CPU
@@ -792,15 +826,8 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         if ((k + no_of_desc) >=
             ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count :
              last_cmd_consumer)) {
-                port->stats.nocmddescriptor++;
-                DPRINTK(ERR, "No command descriptors available,"
-                        " producer = %d, consumer = %d count=%llu,"
-                        " dropping packet\n", producer,
-                        adapter->last_cmd_consumer,
-                        port->stats.nocmddescriptor);
-
                 netif_stop_queue(netdev);
-                port->flags |= NETXEN_NETDEV_STATUS;
+                adapter->flags |= NETXEN_NETDEV_STATUS;
                 spin_unlock_bh(&adapter->tx_lock);
                 return NETDEV_TX_BUSY;
         }
@@ -828,16 +855,16 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         pbuf->skb = skb;
         pbuf->cmd = TX_ETHER_PKT;
         pbuf->frag_count = frag_count;
-        pbuf->port = port->portnum;
+        pbuf->port = adapter->portnum;
         buffrag = &pbuf->frag_array[0];
-        buffrag->dma = pci_map_single(port->pdev, skb->data, first_seg_len,
+        buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
                                       PCI_DMA_TODEVICE);
         buffrag->length = first_seg_len;
         netxen_set_cmd_desc_totallength(hwdesc, skb->len);
         netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
         netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
 
-        netxen_set_cmd_desc_port(hwdesc, port->portnum);
+        netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
         hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
 
@@ -860,7 +887,7 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
                 offset = frag->page_offset;
 
                 temp_len = len;
-                temp_dma = pci_map_page(port->pdev, frag->page, offset,
+                temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
                                         len, PCI_DMA_TODEVICE);
 
                 buffrag++;
@@ -928,20 +955,19 @@ static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
                 }
         }
         spin_lock_bh(&adapter->tx_lock);
-        port->stats.txbytes +=
+        adapter->stats.txbytes +=
             netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]);
         /* Code to update the adapter considering how many producer threads
            are currently working */
         if ((--adapter->num_threads) == 0) {
                 /* This is the last thread */
                 u32 crb_producer = adapter->cmd_producer;
-                writel(crb_producer,
-                       NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET));
+                netxen_nic_update_cmd_producer(adapter, crb_producer);
                 wmb();
                 adapter->total_threads = 0;
         }
 
-        port->stats.xmitfinished++;
+        adapter->stats.xmitfinished++;
         spin_unlock_bh(&adapter->tx_lock);
 
         netdev->trans_start = jiffies;
@@ -961,25 +987,25 @@ static void netxen_watchdog(unsigned long v)
 
 static void netxen_tx_timeout(struct net_device *netdev)
 {
-        struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev);
-
-        SCHEDULE_WORK(&port->tx_timeout_task);
+        struct netxen_adapter *adapter = (struct netxen_adapter *)
+                                                netdev_priv(netdev);
+        SCHEDULE_WORK(&adapter->tx_timeout_task);
 }
 
 static void netxen_tx_timeout_task(struct work_struct *work)
 {
-        struct netxen_port *port =
-                container_of(work, struct netxen_port, tx_timeout_task);
-        struct net_device *netdev = port->netdev;
+        struct netxen_adapter *adapter = 
+                container_of(work, struct netxen_adapter, tx_timeout_task);
+        struct net_device *netdev = adapter->netdev;
         unsigned long flags;
 
         printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
                netxen_nic_driver_name, netdev->name);
 
-        spin_lock_irqsave(&port->adapter->lock, flags);
+        spin_lock_irqsave(&adapter->lock, flags);
         netxen_nic_close(netdev);
         netxen_nic_open(netdev);
-        spin_unlock_irqrestore(&port->adapter->lock, flags);
+        spin_unlock_irqrestore(&adapter->lock, flags);
         netdev->trans_start = jiffies;
         netif_wake_queue(netdev);
 }
@@ -991,16 +1017,14 @@ netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
 
         DPRINTK(INFO, "Entered handle ISR\n");
 
-        adapter->stats.ints++;
-
         if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
                 int count = 0;
                 u32 mask;
-                mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
-                if ((mask & 0x80) == 0) {
-                        /* not our interrupt */
+                u32 our_int = 0;
+                our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
+                /* not our interrupt */
+                if ((our_int & (0x80 << adapter->portnum)) == 0)
                         return ret;
-                }
                 netxen_nic_disable_int(adapter);
                 /* Window = 0 or 1 */
                 do {
@@ -1012,7 +1036,6 @@ netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
                         printk("Could not disable interrupt completely\n");
 
         }
-        adapter->stats.hostints++;
 
         if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) {
                 if (netif_rx_schedule_prep(netdev)) {
@@ -1046,33 +1069,24 @@ netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
 irqreturn_t netxen_intr(int irq, void *data)
 {
         struct netxen_adapter *adapter;
-        struct netxen_port *port;
         struct net_device *netdev;
-        int i;
 
         if (unlikely(!irq)) {
                 return IRQ_NONE;        /* Not our interrupt */
         }
 
         adapter = (struct netxen_adapter *)data;
-        for (i = 0; i < adapter->ahw.max_ports; i++) {
-                port = adapter->port[i];
-                netdev = port->netdev;
-
-                /* process our status queue (for all 4 ports) */
-                if (netif_running(netdev)) {
-                        netxen_handle_int(adapter, netdev);
-                        break;
-                }
-        }
+        netdev  = adapter->netdev;
+        /* process our status queue (for all 4 ports) */
+        if (netif_running(netdev))
+                netxen_handle_int(adapter, netdev);
 
         return IRQ_HANDLED;
 }
 
 static int netxen_nic_poll(struct net_device *netdev, int *budget)
 {
-        struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev);
-        struct netxen_adapter *adapter = port->adapter;
+        struct netxen_adapter *adapter = netdev_priv(netdev);
         int work_to_do = min(*budget, netdev->quota);
         int done = 1;
         int ctx;
@@ -1080,7 +1094,6 @@ static int netxen_nic_poll(struct net_device *netdev, int *budget)
         int work_done = 0;
 
         DPRINTK(INFO, "polling for %d descriptors\n", *budget);
-        port->stats.polled++;
 
         work_done = 0;
         for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
@@ -1124,8 +1137,7 @@ static int netxen_nic_poll(struct net_device *netdev, int *budget)
 #ifdef CONFIG_NET_POLL_CONTROLLER
 static void netxen_nic_poll_controller(struct net_device *netdev)
 {
-        struct netxen_port *port = netdev_priv(netdev);
-        struct netxen_adapter *adapter = port->adapter;
+        struct netxen_adapter *adapter = netdev_priv(netdev);
         disable_irq(adapter->irq);
         netxen_intr(adapter->irq, adapter);
         enable_irq(adapter->irq);