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Message-ID: <20070809062731.GC2259@colo.lackof.org>
Date: Thu, 9 Aug 2007 00:27:31 -0600
From: Grant Grundler <grundler@...isc-linux.org>
To: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: Jeff Garzik <jeff@...zik.org>, Kyle McMartin <kyle@...artin.ca>,
LKML <linux-kernel@...r.kernel.org>,
pm list <linux-pm@...ts.linux-foundation.org>,
Grant Grundler <grundler@...isc-linux.org>
Subject: Re: [RFC][PATCH] uli526x: Add suspend and resume routines (updated)
On Wed, Aug 08, 2007 at 12:56:41AM +0200, Rafael J. Wysocki wrote:
...
> > Apologies, I missed this. I'll look to our new tulip maintainer to
> > queue your resent patch, or at least ACK it...
>
> OK
>
> Below is the updated version. It's functionally equivalent to the previous one.
ACK. Looks fine to me too. I don't have the HW to test it though.
cheers,
grant
>
> Greetings,
> Rafael
>
>
> ---
> From: Rafael J. Wysocki <rjw@...k.pl>
>
> 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 <rjw@...k.pl>
> ---
> drivers/net/tulip/uli526x.c | 109 +++++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 103 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
> +++ linux-2.6.23-rc2/drivers/net/tulip/uli526x.c
> @@ -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 +1162,89 @@ 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);
> + pci_power_t power_state;
> + int err;
> +
> + ULI526X_DBUG(0, "uli526x_suspend", 0);
> +
> + if (!(dev && netdev_priv(dev)))
> + return 0;
> +
> + 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);
> + int err;
> +
> + ULI526X_DBUG(0, "uli526x_resume", 0);
> +
> + if (!(dev && db))
> + return 0;
> +
> + 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 +1784,8 @@ 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@....com.tw");
-
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