[PATCH] e1000: MSI support for PCI-e adapters
MSI support for PCI-e adapters
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000.h net-drivers-2.6/drivers/net/e1000.new/e1000.h
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 82549a6..03e3ec7 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -312,6 +312,16 @@
e1000_configure_rx(adapter);
e1000_alloc_rx_buffers(adapter);
+#ifdef CONFIG_PCI_MSI
+ if(adapter->hw.mac_type > e1000_82547_rev_2) {
+ adapter->have_msi = TRUE;
+ if((err = pci_enable_msi(adapter->pdev))) {
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate MSI interrupt Error: %d\n", err);
+ adapter->have_msi = FALSE;
+ }
+ }
+#endif
if((err = request_irq(adapter->pdev->irq, &e1000_intr,
SA_SHIRQ | SA_SAMPLE_RANDOM,
netdev->name, netdev)))
@@ -333,6 +343,11 @@
e1000_irq_disable(adapter);
free_irq(adapter->pdev->irq, netdev);
+#ifdef CONFIG_PCI_MSI
+ if(adapter->hw.mac_type > e1000_82547_rev_2 &&
+ adapter->have_msi == TRUE)
+ pci_disable_msi(adapter->pdev);
+#endif
del_timer_sync(&adapter->tx_fifo_stall_timer);
del_timer_sync(&adapter->watchdog_timer);
del_timer_sync(&adapter->phy_info_timer);