diff options
Diffstat (limited to 'drivers/net/netxen/netxen_nic_isr.c')
| -rw-r--r-- | drivers/net/netxen/netxen_nic_isr.c | 221 |
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 00000000000000..f1c3e5af03a9c3 --- /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; + } +} |