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Message-Id: <201012230832.00443.thomas@fjellstrom.ca>
Date: Thu, 23 Dec 2010 08:32:00 -0700
From: Thomas Fjellstrom <thomas@...llstrom.ca>
To: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"Linux-pm mailing list" <linux-pm@...ts.linux-foundation.org>
Subject: Re: Wake On lan and ATL1 nic
On December 22, 2010, Rafael J. Wysocki wrote:
> On Wednesday, December 15, 2010, Thomas Fjellstrom wrote:
> > I can't seem to get wol to work with my desktop, which has an integrated
> > ATL1 GbE nic. I can't be absolutely sure if it ever worked, but I think
> > it did at one point. I can use ethtool to look at the wol status, that
> > it supports magic-packet wol, and I can enable it, which is done at boot
> > using an init script. But No matter how many times I try to send a wol
> > packet to that machine it never wakes up.
> >
> > Looking around on the net seems to say it is supported, and should work,
> > but I'm not having any luck. Anyone have any hints?
>
> It works for me with 2.6.37-rc7 and the appended patch applied (at least
> the machine is woken up from suspend to RAM). Of course, the adapter
> needs to be configured for that with the help of ethtool.
Hi, thanks for making quick work of this. I have one slight problem, my nic
seems to use the atl1 driver, and not atl1c. I've tried using atl1c and atl1e,
both will load if I modprobe them, but neither actually bring up the device.
Even tried blacklisting atl1 first.
> Thanks,
> Rafael
>
> ---
> From: Rafael J. Wysocki <rjw@...k.pl>
> Subject: atl1c: Do not use legacy PCI power management
>
> The atl1c driver uses the legacy PCI power management, so it has to
> do some PCI-specific things in its ->suspend() and ->resume()
> callbacks and they are not done correctly.
>
> Convert atl1c to the new PCI power management framework and make it
> let the PCI subsystem handle all of the PCI-specific aspects of
> device handling during system power transitions.
>
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> ---
> drivers/net/atl1c/atl1c_main.c | 39
> +++++++++++++++------------------------ 1 file changed, 15 insertions(+),
> 24 deletions(-)
>
> Index: linux-2.6/drivers/net/atl1c/atl1c_main.c
> ===================================================================
> --- linux-2.6.orig/drivers/net/atl1c/atl1c_main.c
> +++ linux-2.6/drivers/net/atl1c/atl1c_main.c
> @@ -702,6 +702,7 @@ static int __devinit atl1c_sw_init(struc
>
>
> adapter->wol = 0;
> + device_set_wakeup_enable(&pdev->dev, false);
> adapter->link_speed = SPEED_0;
> adapter->link_duplex = FULL_DUPLEX;
> adapter->num_rx_queues = AT_DEF_RECEIVE_QUEUE;
> @@ -2444,8 +2445,9 @@ static int atl1c_close(struct net_device
> return 0;
> }
>
> -static int atl1c_suspend(struct pci_dev *pdev, pm_message_t state)
> +static int atl1c_suspend(struct device *dev)
> {
> + struct pci_dev *pdev = to_pci_dev(dev);
> struct net_device *netdev = pci_get_drvdata(pdev);
> struct atl1c_adapter *adapter = netdev_priv(netdev);
> struct atl1c_hw *hw = &adapter->hw;
> @@ -2454,7 +2456,6 @@ static int atl1c_suspend(struct pci_dev
> u32 wol_ctrl_data = 0;
> u16 mii_intr_status_data = 0;
> u32 wufc = adapter->wol;
> - int retval = 0;
>
> atl1c_disable_l0s_l1(hw);
> if (netif_running(netdev)) {
> @@ -2462,9 +2463,6 @@ static int atl1c_suspend(struct pci_dev
> atl1c_down(adapter);
> }
> netif_device_detach(netdev);
> - retval = pci_save_state(pdev);
> - if (retval)
> - return retval;
>
> if (wufc)
> if (atl1c_phy_power_saving(hw) != 0)
> @@ -2525,12 +2523,8 @@ static int atl1c_suspend(struct pci_dev
> AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data);
> AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
>
> - /* pcie patch */
> - device_set_wakeup_enable(&pdev->dev, 1);
> -
> AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT |
> GPHY_CTRL_EXT_RESET);
> - pci_prepare_to_sleep(pdev);
> } else {
> AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_POWER_SAVING);
> master_ctrl_data |= MASTER_CTRL_CLK_SEL_DIS;
> @@ -2540,25 +2534,17 @@ static int atl1c_suspend(struct pci_dev
> AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
> AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
> hw->phy_configured = false; /* re-init PHY when resume */
> - pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
> }
>
> - pci_disable_device(pdev);
> - pci_set_power_state(pdev, pci_choose_state(pdev, state));
> -
> return 0;
> }
>
> -static int atl1c_resume(struct pci_dev *pdev)
> +static int atl1c_resume(struct device *dev)
> {
> + struct pci_dev *pdev = to_pci_dev(dev);
> struct net_device *netdev = pci_get_drvdata(pdev);
> struct atl1c_adapter *adapter = netdev_priv(netdev);
>
> - pci_set_power_state(pdev, PCI_D0);
> - pci_restore_state(pdev);
> - pci_enable_wake(pdev, PCI_D3hot, 0);
> - pci_enable_wake(pdev, PCI_D3cold, 0);
> -
> AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
> atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE |
> ATL1C_PCIE_PHY_RESET);
> @@ -2582,7 +2568,12 @@ static int atl1c_resume(struct pci_dev *
>
> static void atl1c_shutdown(struct pci_dev *pdev)
> {
> - atl1c_suspend(pdev, PMSG_SUSPEND);
> + struct net_device *netdev = pci_get_drvdata(pdev);
> + struct atl1c_adapter *adapter = netdev_priv(netdev);
> +
> + atl1c_suspend(&pdev->dev);
> + pci_wake_from_d3(pdev, adapter->wol);
> + pci_set_power_state(pdev, PCI_D3hot);
> }
>
> static const struct net_device_ops atl1c_netdev_ops = {
> @@ -2886,16 +2877,16 @@ static struct pci_error_handlers atl1c_e
> .resume = atl1c_io_resume,
> };
>
> +static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume);
> +
> static struct pci_driver atl1c_driver = {
> .name = atl1c_driver_name,
> .id_table = atl1c_pci_tbl,
> .probe = atl1c_probe,
> .remove = __devexit_p(atl1c_remove),
> - /* Power Managment Hooks */
> - .suspend = atl1c_suspend,
> - .resume = atl1c_resume,
> .shutdown = atl1c_shutdown,
> - .err_handler = &atl1c_err_handler
> + .err_handler = &atl1c_err_handler,
> + .driver.pm = &atl1c_pm_ops,
> };
>
> /*
--
Thomas Fjellstrom
thomas@...llstrom.ca
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