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 00000000000..f1c3e5af03a
--- /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;
+	}
+}