Add NetXen 1G/10G ethernet driver.

Signed-off-by: Amit S. Kale <amitkale@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 221 insertions, 0 deletions

diff --git a/drivers/net/netxen/netxen_nic_isr.c b/drivers/net/netxen/netxen_nic_isr.c
new file mode 100644
index 000000000000..f1c3e5af03a9
--- /dev/null
+++ b/drivers/net/netxen/netxen_nic_isr.c
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2003 - 2006 NetXen, Inc.
+ * All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *                            
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *                                   
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ * 
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.
+ * 
+ * Contact Information:
+ *    info@netxen.com
+ * NetXen,
+ * 3965 Freedom Circle, Fourth floor,
+ * Santa Clara, CA 95054
+ */
+
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+
+#include "netxen_nic.h"
+#include "netxen_nic_hw.h"
+#include "netxen_nic_phan_reg.h"
+
+/*
+ * netxen_nic_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ */
+struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
+{
+        struct netxen_port *port = netdev_priv(netdev);
+        struct net_device_stats *stats = &port->net_stats;
+
+        memset(stats, 0, sizeof(*stats));
+
+        /* total packets received   */
+        stats->rx_packets = port->stats.no_rcv;
+        /* total packets transmitted    */
+        stats->tx_packets = port->stats.xmitedframes + port->stats.xmitfinished;
+        /* total bytes received     */
+        stats->rx_bytes = port->stats.rxbytes;
+        /* total bytes transmitted  */
+        stats->tx_bytes = port->stats.txbytes;
+        /* bad packets received     */
+        stats->rx_errors = port->stats.rcvdbadskb;
+        /* packet transmit problems */
+        stats->tx_errors = port->stats.nocmddescriptor;
+        /* no space in linux buffers    */
+        stats->rx_dropped = port->stats.updropped;
+        /* no space available in linux  */
+        stats->tx_dropped = port->stats.txdropped;
+
+        return stats;
+}
+
+void netxen_indicate_link_status(struct netxen_adapter *adapter, u32 portno,
+                                 u32 link)
+{
+        struct netxen_port *pport = adapter->port[portno];
+        struct net_device *netdev = pport->netdev;
+
+        if (link)
+                netif_carrier_on(netdev);
+        else
+                netif_carrier_off(netdev);
+}
+
+void netxen_handle_port_int(struct netxen_adapter *adapter, u32 portno,
+                            u32 enable)
+{
+        __le32 int_src;
+        struct netxen_port *port;
+
+        /*  This should clear the interrupt source */
+        if (adapter->ops->phy_read)
+                adapter->ops->phy_read(adapter, portno,
+                                       NETXEN_NIU_GB_MII_MGMT_ADDR_INT_STATUS,
+                                       &int_src);
+        if (int_src == 0) {
+                DPRINTK(INFO, "No phy interrupts for port #%d\n", portno);
+                return;
+        }
+        if (adapter->ops->disable_phy_interrupts)
+                adapter->ops->disable_phy_interrupts(adapter, portno);
+
+        port = adapter->port[portno];
+
+        if (netxen_get_phy_int_jabber(int_src))
+                DPRINTK(INFO, "NetXen: %s Jabber interrupt \n",
+                        port->netdev->name);
+
+        if (netxen_get_phy_int_polarity_changed(int_src))
+                DPRINTK(INFO, "NetXen: %s POLARITY CHANGED int \n",
+                        port->netdev->name);
+
+        if (netxen_get_phy_int_energy_detect(int_src))
+                DPRINTK(INFO, "NetXen: %s ENERGY DETECT INT \n",
+                        port->netdev->name);
+
+        if (netxen_get_phy_int_downshift(int_src))
+                DPRINTK(INFO, "NetXen: %s DOWNSHIFT INT \n",
+                        port->netdev->name);
+        /* write it down later.. */
+        if ((netxen_get_phy_int_speed_changed(int_src))
+            || (netxen_get_phy_int_link_status_changed(int_src))) {
+                __le32 status;
+
+                DPRINTK(INFO, "NetXen: %s SPEED CHANGED OR"
+                        " LINK STATUS CHANGED \n", port->netdev->name);
+
+                if (adapter->ops->phy_read
+                    && adapter->ops->phy_read(adapter, portno,
+                                              NETXEN_NIU_GB_MII_MGMT_ADDR_PHY_STATUS,
+                                              &status) == 0) {
+                        if (netxen_get_phy_int_link_status_changed(int_src)) {
+                                if (netxen_get_phy_link(status)) {
+                                        netxen_niu_gbe_init_port(adapter,
+                                                                 portno);
+                                        printk("%s: %s Link UP\n",
+                                               netxen_nic_driver_name,
+                                               port->netdev->name);
+
+                                } else {
+                                        printk("%s: %s Link DOWN\n",
+                                               netxen_nic_driver_name,
+                                               port->netdev->name);
+                                }
+                                netxen_indicate_link_status(adapter, portno,
+                                                            netxen_get_phy_link
+                                                            (status));
+                        }
+                }
+        }
+        if (adapter->ops->enable_phy_interrupts)
+                adapter->ops->enable_phy_interrupts(adapter, portno);
+}
+
+void netxen_nic_isr_other(struct netxen_adapter *adapter)
+{
+        u32 enable, portno;
+        u32 i2qhi;
+
+        /*
+         * bit 3 is for i2qInt, if high its enabled
+         * check for phy interrupts
+         * read vector and check for bit 45 for phy
+         * clear int by writing the same value into ISR_INT_VECTOR REG
+         */
+
+        DPRINTK(INFO, "I2Q is the source of INT \n");
+
+        /* verify the offset */
+        i2qhi = readl(NETXEN_CRB_NORMALIZE(adapter, NETXEN_I2Q_CLR_PCI_HI));
+
+        DPRINTK(INFO, "isr NETXEN_I2Q_CLR_PCI_HI = 0x%x \n", i2qhi);
+
+        if (i2qhi & 0x4000) {
+                for (portno = 0; portno < NETXEN_NIU_MAX_GBE_PORTS; portno++) {
+                        DPRINTK(INFO, "External PHY interrupt ON PORT %d\n",
+                                portno);
+
+                        enable = 1;
+                        netxen_handle_port_int(adapter, portno, enable);
+                }
+
+                /* Clear the interrupt on I2Q */
+                writel((u32) i2qhi,
+                       NETXEN_CRB_NORMALIZE(adapter, NETXEN_I2Q_CLR_PCI_HI));
+
+        }
+}
+
+void netxen_nic_gbe_handle_phy_intr(struct netxen_adapter *adapter)
+{
+        u32 val;
+        val = readl(NETXEN_CRB_NORMALIZE(adapter, ISR_INT_VECTOR));
+        if (val & 0x4) {
+                adapter->stats.otherints++;
+                netxen_nic_isr_other(adapter);
+        }
+}
+
+void netxen_nic_xgbe_handle_phy_intr(struct netxen_adapter *adapter)
+{
+        struct net_device *netdev = adapter->port[0]->netdev;
+        u32 val;
+
+        /* WINDOW = 1 */
+        val = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_XG_STATE));
+
+        if (adapter->ahw.xg_linkup == 1 && val != XG_LINK_UP) {
+                printk(KERN_INFO "%s: %s NIC Link is down\n",
+                       netxen_nic_driver_name, netdev->name);
+                adapter->ahw.xg_linkup = 0;
+                /* read twice to clear sticky bits */
+                /* WINDOW = 0 */
+                netxen_nic_read_w0(adapter, NETXEN_NIU_XG_STATUS, &val);
+                netxen_nic_read_w0(adapter, NETXEN_NIU_XG_STATUS, &val);
+
+                if ((val & 0xffb) != 0xffb) {
+                        printk(KERN_INFO "%s ISR: Sync/Align BAD: 0x%08x\n",
+                               netxen_nic_driver_name, val);
+                }
+        } else if (adapter->ahw.xg_linkup == 0 && val == XG_LINK_UP) {
+                printk(KERN_INFO "%s: %s NIC Link is up\n",
+                       netxen_nic_driver_name, netdev->name);
+                adapter->ahw.xg_linkup = 1;
+        }
+}