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authorFrancois Romieu <romieu@fr.zoreil.com>2006-10-10 14:33:27 -0700
committerJeff Garzik <jeff@garzik.org>2006-12-02 00:11:55 -0500
commita189317fa0e9d425cd3a4c248b06f96d876cf7fd (patch)
tree63da17e7b0c80bed776d95b9408587b805c5f533
parent3c3070d713d798f7f9e7ee3614e49b47655d14d8 (diff)
[PATCH] forcedeth: power management support
Tobias Diedrich <ranma@tdiedrich.de> sayeth: Vanilla forcedeth doesn't seem to support suspend and an ifdown/up-cycle is needed to get it working again after suspend. Francois Romieu's "Awfully experimental" patch is working just fine for me (with message signalled interrupts disabled) and has survived quite a few suspend/resume cycles. So I'd very much like to see (at least partial, with msi disabled) suspend support for forcedeth in mainline. (Addresses http://bugzilla.kernel.org/show_bug.cgi?id=6398) Cc: Francois Romieu <romieu@fr.zoreil.com> Cc; Jeff Garzik <jeff@garzik.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/forcedeth.c47
1 files changed, 46 insertions, 1 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index c5ed635bce3..87af5e497c5 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -4603,6 +4603,50 @@ static void __devexit nv_remove(struct pci_dev *pci_dev)
pci_set_drvdata(pci_dev, NULL);
}
+#ifdef CONFIG_PM
+static int nv_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct fe_priv *np = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ goto out;
+
+ netif_device_detach(dev);
+
+ // Gross.
+ nv_close(dev);
+
+ pci_save_state(pdev);
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+out:
+ return 0;
+}
+
+static int nv_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ int rc = 0;
+
+ if (!netif_running(dev))
+ goto out;
+
+ netif_device_attach(dev);
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ pci_enable_wake(pdev, PCI_D0, 0);
+
+ rc = nv_open(dev);
+out:
+ return rc;
+}
+#else
+#define nv_suspend NULL
+#define nv_resume NULL
+#endif /* CONFIG_PM */
+
static struct pci_device_id pci_tbl[] = {
{ /* nForce Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_1),
@@ -4704,9 +4748,10 @@ static struct pci_driver driver = {
.id_table = pci_tbl,
.probe = nv_probe,
.remove = __devexit_p(nv_remove),
+ .suspend = nv_suspend,
+ .resume = nv_resume,
};
-
static int __init init_nic(void)
{
printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION);