RESEND [PATCH 2/3] NetXen: Support per PCI-function interrupt mask registers
This patch updates the various access routines to access different
control and status settings present in different register locations.
This will fix problems related to working of different ports in
multi Port card.
Signed-off by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off by: Milan Bag <mbag@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 663bc47..dba8e6b 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -308,7 +308,13 @@
adapter->netdev = netdev;
adapter->pdev = pdev;
+
+ /* this will be read from FW later */
+ adapter->intr_scheme = -1;
+
+ /* This will be reset for mezz cards */
adapter->portnum = pci_func_id;
+ adapter->status &= ~NETXEN_NETDEV_STATUS;
netdev->open = netxen_nic_open;
netdev->stop = netxen_nic_close;
@@ -1100,28 +1106,26 @@
netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
{
u32 ret = 0;
+ u32 our_int = 0;
DPRINTK(INFO, "Entered handle ISR\n");
adapter->stats.ints++;
if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
- int count = 0;
- u32 mask;
- u32 our_int = 0;
our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
/* not our interrupt */
if ((our_int & (0x80 << adapter->portnum)) == 0)
return ret;
- netxen_nic_disable_int(adapter);
- /* Window = 0 or 1 */
- do {
- writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter,
- ISR_INT_TARGET_STATUS));
- mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
- } while (((mask & 0x80) != 0) && (++count < 32));
- if ((mask & 0x80) != 0)
- printk("Could not disable interrupt completely\n");
+ }
+ netxen_nic_disable_int(adapter);
+
+ if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
+ /* claim interrupt */
+ if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
+ writel(our_int & ~((u32)(0x80 << adapter->portnum)),
+ NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
+ }
}
if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) {
@@ -1133,7 +1137,7 @@
} else {
static unsigned int intcount = 0;
if ((++intcount & 0xfff) == 0xfff)
- printk(KERN_ERR
+ DPRINTK(KERN_ERR
"%s: %s interrupt %d while in poll\n",
netxen_nic_driver_name, netdev->name,
intcount);