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Message-ID: <20060923082851.GA2611@melchior.yamamaya.is-a-geek.org>
Date: Sat, 23 Sep 2006 10:28:51 +0200
From: Tobias Diedrich <ranma@...edrich.de>
To: linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: forcedeth broken powermanagement/irq handling ?
Hi,
since there hasn't been much progress with the bugzilla entry I'm
bringing this issue to your attention here. :)
http://bugzilla.kernel.org/show_bug.cgi?id=6398
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.
Romieu's patch:
--- linux-2.6.18-rc6/drivers/net/forcedeth.c 2006-09-09 09:45:43.000000000 +0200
+++ linux-2.6.17.11-xen/drivers/net/forcedeth.c 2006-09-09 09:41:25.000000000 +0200
@@ -4433,6 +4433,50 @@
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;
+}
+
+#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),
@@ -4534,6 +4578,10 @@
.id_table = pci_tbl,
.probe = nv_probe,
.remove = __devexit_p(nv_remove),
+#ifdef CONFIG_PM
+ .suspend = nv_suspend,
+ .resume = nv_resume,
+#endif
};
--
Tobias PGP: http://9ac7e0bc.uguu.de
このメールは十割再利用されたビットで作られています。
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