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/*
* 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;
}
}
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