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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_adapter *adapter = netdev_priv(netdev);
struct net_device_stats *stats = &adapter->net_stats;
memset(stats, 0, sizeof(*stats));
/* total packets received */
stats->rx_packets = adapter->stats.no_rcv;
/* total packets transmitted */
stats->tx_packets = adapter->stats.xmitedframes +
adapter->stats.xmitfinished;
/* total bytes received */
stats->rx_bytes = adapter->stats.rxbytes;
/* total bytes transmitted */
stats->tx_bytes = adapter->stats.txbytes;
/* bad packets received */
stats->rx_errors = adapter->stats.rcvdbadskb;
/* packet transmit problems */
stats->tx_errors = adapter->stats.nocmddescriptor;
/* no space in linux buffers */
stats->rx_dropped = adapter->stats.rxdropped;
/* no space available in linux */
stats->tx_dropped = adapter->stats.txdropped;
return stats;
}
static void netxen_indicate_link_status(struct netxen_adapter *adapter,
u32 link)
{
struct net_device *netdev = adapter->netdev;
if (link)
netif_carrier_on(netdev);
else
netif_carrier_off(netdev);
}
#if 0
void netxen_handle_port_int(struct netxen_adapter *adapter, u32 enable)
{
__u32 int_src;
/* This should clear the interrupt source */
if (adapter->phy_read)
adapter->phy_read(adapter,
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->disable_phy_interrupts)
adapter->disable_phy_interrupts(adapter);
if (netxen_get_phy_int_jabber(int_src))
DPRINTK(INFO, "Jabber interrupt \n");
if (netxen_get_phy_int_polarity_changed(int_src))
DPRINTK(INFO, "POLARITY CHANGED int \n");
if (netxen_get_phy_int_energy_detect(int_src))
DPRINTK(INFO, "ENERGY DETECT INT \n");
if (netxen_get_phy_int_downshift(int_src))
DPRINTK(INFO, "DOWNSHIFT INT \n");
/* write it down later.. */
if ((netxen_get_phy_int_speed_changed(int_src))
|| (netxen_get_phy_int_link_status_changed(int_src))) {
__u32 status;
DPRINTK(INFO, "SPEED CHANGED OR LINK STATUS CHANGED \n");
if (adapter->phy_read
&& adapter->phy_read(adapter,
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)) {
printk(KERN_INFO "%s: %s Link UP\n",
netxen_nic_driver_name,
adapter->netdev->name);
} else {
printk(KERN_INFO "%s: %s Link DOWN\n",
netxen_nic_driver_name,
adapter->netdev->name);
}
netxen_indicate_link_status(adapter,
netxen_get_phy_link
(status));
}
}
}
if (adapter->enable_phy_interrupts)
adapter->enable_phy_interrupts(adapter);
}
#endif /* 0 */
static void netxen_nic_isr_other(struct netxen_adapter *adapter)
{
int portno = adapter->portnum;
u32 val, linkup, qg_linksup;
/* verify the offset */
val = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_XG_STATE));
val = val >> adapter->physical_port;
if (val == adapter->ahw.qg_linksup)
return;
qg_linksup = adapter->ahw.qg_linksup;
adapter->ahw.qg_linksup = val;
DPRINTK(INFO, "link update 0x%08x\n", val);
linkup = val & 1;
if (linkup != (qg_linksup & 1)) {
printk(KERN_INFO "%s: %s PORT %d link %s\n",
adapter->netdev->name,
netxen_nic_driver_name, portno,
((linkup == 0) ? "down" : "up"));
netxen_indicate_link_status(adapter, linkup);
if (linkup)
netxen_nic_set_link_parameters(adapter);
}
}
void netxen_nic_gbe_handle_phy_intr(struct netxen_adapter *adapter)
{
netxen_nic_isr_other(adapter);
}
#if 0
int netxen_nic_link_ok(struct netxen_adapter *adapter)
{
switch (adapter->ahw.board_type) {
case NETXEN_NIC_GBE:
return ((adapter->ahw.qg_linksup) & 1);
case NETXEN_NIC_XGBE:
return ((adapter->ahw.xg_linkup) & 1);
default:
printk(KERN_ERR"%s: Function: %s, Unknown board type\n",
netxen_nic_driver_name, __FUNCTION__);
break;
}
return 0;
}
#endif /* 0 */
void netxen_nic_xgbe_handle_phy_intr(struct netxen_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
u32 val;
/* WINDOW = 1 */
val = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_XG_STATE));
val >>= (adapter->physical_port * 8);
val &= 0xff;
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;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
} 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;
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
}
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