From a189317fa0e9d425cd3a4c248b06f96d876cf7fd Mon Sep 17 00:00:00 2001 From: Francois Romieu Date: Tue, 10 Oct 2006 14:33:27 -0700 Subject: [PATCH] [PATCH] forcedeth: power management support Tobias Diedrich 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 Cc; Jeff Garzik Cc: Manfred Spraul Cc: Ayaz Abdulla Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/net/forcedeth.c | 47 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) 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); -- 2.41.1