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netxen: async link event handling

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Add support for asynchronous events from firmware,
received over one of the rx rings.

Add support for event based phy interrupts, enhanced links
status reporting from firmware.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke
2009-04-07 22:50:42 +00:00
committed by David S. Miller
parent 56a007871a
commit 3bf26ce3f4
6 changed files with 265 additions and 59 deletions
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59
drivers/net/netxen/netxen_nic_main.c
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@@ -787,6 +787,9 @@ netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
if (adapter->max_sds_rings > 1)
netxen_config_rss(adapter, 1);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_linkevent_request(adapter, 1);
return 0;
}
@@ -1493,9 +1496,38 @@ static int netxen_nic_check_temp(struct netxen_adapter *adapter)
return rv;
}
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
{
struct net_device *netdev = adapter->netdev;
if (adapter->ahw.linkup && !linkup) {
printk(KERN_INFO "%s: %s NIC Link is down\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
if (!adapter->has_link_events)
netxen_nic_set_link_parameters(adapter);
} else if (!adapter->ahw.linkup && linkup) {
printk(KERN_INFO "%s: %s NIC Link is up\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
if (!adapter->has_link_events)
netxen_nic_set_link_parameters(adapter);
}
}
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
{
u32 val, port, linkup;
port = adapter->physical_port;
@@ -1514,27 +1546,7 @@ static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
}
}
if (adapter->ahw.linkup && !linkup) {
printk(KERN_INFO "%s: %s NIC Link is down\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
netxen_nic_set_link_parameters(adapter);
} else if (!adapter->ahw.linkup && linkup) {
printk(KERN_INFO "%s: %s NIC Link is up\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
netxen_nic_set_link_parameters(adapter);
}
netxen_advert_link_change(adapter, linkup);
}
static void netxen_watchdog(unsigned long v)
@@ -1552,7 +1564,8 @@ void netxen_watchdog_task(struct work_struct *work)
if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
return;
netxen_nic_handle_phy_intr(adapter);
if (!adapter->has_link_events)
netxen_nic_handle_phy_intr(adapter);
if (netif_running(adapter->netdev))
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);