Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760091AbXHETE6 (ORCPT ); Sun, 5 Aug 2007 15:04:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755396AbXHETEv (ORCPT ); Sun, 5 Aug 2007 15:04:51 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:52483 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752837AbXHETEu (ORCPT ); Sun, 5 Aug 2007 15:04:50 -0400 From: "Rafael J. Wysocki" To: LKML Subject: [RFC][PATCH] uli526x: Add suspend and resume routines Date: Sun, 5 Aug 2007 21:14:01 +0200 User-Agent: KMail/1.9.5 Cc: Jeff Garzik , pm list , Grant Grundler , Kyle McMartin MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708052114.01790.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4156 Lines: 166 [Sorry for the excessive CCs, but I don't know who's the maintainer. ;-)] --- From: Rafael J. Wysocki Add suspend/resume support to the uli526x network driver (tested on x86_64, with "Ethernet controller: ALi Corporation M5263 Ethernet Controller, rev 40"). This patch is based on the suspend/resume code in the tg3 driver. Signed-off-by: Rafael J. Wysocki --- drivers/net/tulip/uli526x.c | 108 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 102 insertions(+), 6 deletions(-) Index: linux-2.6.23-rc2/drivers/net/tulip/uli526x.c =================================================================== --- linux-2.6.23-rc2.orig/drivers/net/tulip/uli526x.c 2007-08-05 20:18:57.000000000 +0200 +++ linux-2.6.23-rc2/drivers/net/tulip/uli526x.c 2007-08-05 20:47:07.000000000 +0200 @@ -1110,19 +1110,15 @@ static void uli526x_timer(unsigned long /* - * Dynamic reset the ULI526X board * Stop ULI526X board * Free Tx/Rx allocated memory - * Reset ULI526X board - * Re-initialize ULI526X board + * Init system variable */ -static void uli526x_dynamic_reset(struct net_device *dev) +static void uli526x_reset_prepare(struct net_device *dev) { struct uli526x_board_info *db = netdev_priv(dev); - ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0); - /* Sopt MAC controller */ db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */ update_cr6(db->cr6_data, dev->base_addr); @@ -1141,6 +1137,22 @@ static void uli526x_dynamic_reset(struct db->link_failed = 1; db->init=1; db->wait_reset = 0; +} + + +/* + * Dynamic reset the ULI526X board + * Stop ULI526X board + * Free Tx/Rx allocated memory + * Reset ULI526X board + * Re-initialize ULI526X board + */ + +static void uli526x_dynamic_reset(struct net_device *dev) +{ + ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0); + + uli526x_reset_prepare(dev); /* Re-initialize ULI526X board */ uli526x_init(dev); @@ -1150,6 +1162,88 @@ static void uli526x_dynamic_reset(struct } +#ifdef CONFIG_PM_SLEEP + +/* + * Suspend the interface. + */ + +static int uli526x_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + int err = 0; + + ULI526X_DBUG(0, "uli526x_suspend", 0); + + if (dev && netdev_priv(dev)) { + pci_power_t power_state; + + pci_save_state(pdev); + + if (!netif_running(dev)) + return 0; + + netif_device_detach(dev); + uli526x_reset_prepare(dev); + + power_state = pci_choose_state(pdev, state); + pci_enable_wake(pdev, power_state, 0); + err = pci_set_power_state(pdev, power_state); + if (err) { + netif_device_attach(dev); + /* Re-initialize ULI526X board */ + uli526x_init(dev); + /* Restart upper layer interface */ + netif_wake_queue(dev); + } + } + return err; +} + +/* + * Resume the interface. + */ + +static int uli526x_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct uli526x_board_info *db = netdev_priv(dev); + + ULI526X_DBUG(0, "uli526x_resume", 0); + + if (dev && db) { + int err; + + pci_restore_state(pdev); + + if (!netif_running(dev)) + return 0; + + err = pci_set_power_state(pdev, PCI_D0); + if (err) { + printk(KERN_WARNING + "%s: Could not put device into D0\n", + dev->name); + return err; + } + + netif_device_attach(dev); + /* Re-initialize ULI526X board */ + uli526x_init(dev); + /* Restart upper layer interface */ + netif_wake_queue(dev); + } + return 0; +} + +#else /* !CONFIG_PM_SLEEP */ + +#define uli526x_suspend NULL +#define uli526x_resume NULL + +#endif /* !CONFIG_PM_SLEEP */ + + /* * free all allocated rx buffer */ @@ -1689,6 +1783,8 @@ static struct pci_driver uli526x_driver .id_table = uli526x_pci_tbl, .probe = uli526x_init_one, .remove = __devexit_p(uli526x_remove_one), + .suspend = uli526x_suspend, + .resume = uli526x_resume, }; MODULE_AUTHOR("Peer Chen, peer.chen@uli.com.tw"); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/