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authorMalli Chilakala <mallikarjuna.chilakala@intel.com>2005-04-28 19:39:13 -0700
committerJeff Garzik <jgarzik@pobox.com>2005-05-12 20:48:52 -0400
commitfa4f7ef3aaa6cee6b04ebe90266ee893e0b2ce07 (patch)
tree3a1ec2dbb7f0298b0de9db2b815bf7b1d2c4936c /drivers/net/e1000
parentdf25e164878836196ee93d1a5757867da6eac30e (diff)
[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
Diffstat (limited to 'drivers/net/e1000')
-rw-r--r--drivers/net/e1000/e1000.h3
-rw-r--r--drivers/net/e1000/e1000_main.c15
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 148930d4e9b..da055520daa 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -257,5 +257,8 @@ struct e1000_adapter {
int msg_enable;
+#ifdef CONFIG_PCI_MSI
+ boolean_t have_msi;
+#endif
};
#endif /* _E1000_H_ */
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 82549a6fcfb..03e3ec74f3f 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -312,6 +312,16 @@ e1000_up(struct e1000_adapter *adapter)
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_down(struct e1000_adapter *adapter)
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);