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ixgbevf: Add suspend and resume support to the VF

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This change adds PCI suspend and resume support to ixgbevf.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2012-05-11 08:33:26 +00:00 committed by Jeff Kirsher
parent 076d807024
commit 0ac1e8cee6
1 changed files with 89 additions and 4 deletions
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93
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
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@ -1866,6 +1866,22 @@ err_set_interrupt:
return err;
}
/**
* ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings
* @adapter: board private structure to clear interrupt scheme on
*
* We go through and clear interrupt specific resources and reset the structure
* to pre-load conditions
**/
static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter *adapter)
{
adapter->num_tx_queues = 0;
adapter->num_rx_queues = 0;
ixgbevf_free_q_vectors(adapter);
ixgbevf_reset_interrupt_capability(adapter);
}
/**
* ixgbevf_sw_init - Initialize general software structures
* (struct ixgbevf_adapter)
@ -2889,23 +2905,85 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
static void ixgbevf_shutdown(struct pci_dev *pdev)
static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
#ifdef CONFIG_PM
int retval = 0;
#endif
netif_device_detach(netdev);
if (netif_running(netdev)) {
rtnl_lock();
ixgbevf_down(adapter);
ixgbevf_free_irq(adapter);
ixgbevf_free_all_tx_resources(adapter);
ixgbevf_free_all_rx_resources(adapter);
rtnl_unlock();
}
ixgbevf_clear_interrupt_scheme(adapter);
#ifdef CONFIG_PM
retval = pci_save_state(pdev);
if (retval)
return retval;
#endif
pci_disable_device(pdev);
return 0;
}
#ifdef CONFIG_PM
static int ixgbevf_resume(struct pci_dev *pdev)
{
struct ixgbevf_adapter *adapter = pci_get_drvdata(pdev);
struct net_device *netdev = adapter->netdev;
u32 err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/*
* pci_restore_state clears dev->state_saved so call
* pci_save_state to restore it.
*/
pci_save_state(pdev);
pci_disable_device(pdev);
err = pci_enable_device_mem(pdev);
if (err) {
dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
return err;
}
pci_set_master(pdev);
rtnl_lock();
err = ixgbevf_init_interrupt_scheme(adapter);
rtnl_unlock();
if (err) {
dev_err(&pdev->dev, "Cannot initialize interrupts\n");
return err;
}
ixgbevf_reset(adapter);
if (netif_running(netdev)) {
err = ixgbevf_open(netdev);
if (err)
return err;
}
netif_device_attach(netdev);
return err;
}
#endif /* CONFIG_PM */
static void ixgbevf_shutdown(struct pci_dev *pdev)
{
ixgbevf_suspend(pdev, PMSG_SUSPEND);
}
static struct rtnl_link_stats64 *ixgbevf_get_stats(struct net_device *netdev,
@ -2946,7 +3024,7 @@ static struct rtnl_link_stats64 *ixgbevf_get_stats(struct net_device *netdev,
return stats;
}
static const struct net_device_ops ixgbe_netdev_ops = {
static const struct net_device_ops ixgbevf_netdev_ops = {
.ndo_open = ixgbevf_open,
.ndo_stop = ixgbevf_close,
.ndo_start_xmit = ixgbevf_xmit_frame,
@ -2962,7 +3040,7 @@ static const struct net_device_ops ixgbe_netdev_ops = {
static void ixgbevf_assign_netdev_ops(struct net_device *dev)
{
dev->netdev_ops = &ixgbe_netdev_ops;
dev->netdev_ops = &ixgbevf_netdev_ops;
ixgbevf_set_ethtool_ops(dev);
dev->watchdog_timeo = 5 * HZ;
}
@ -3131,6 +3209,7 @@ static int __devinit ixgbevf_probe(struct pci_dev *pdev,
return 0;
err_register:
ixgbevf_clear_interrupt_scheme(adapter);
err_sw_init:
ixgbevf_reset_interrupt_capability(adapter);
iounmap(hw->hw_addr);
@ -3168,6 +3247,7 @@ static void __devexit ixgbevf_remove(struct pci_dev *pdev)
if (netdev->reg_state == NETREG_REGISTERED)
unregister_netdev(netdev);
ixgbevf_clear_interrupt_scheme(adapter);
ixgbevf_reset_interrupt_capability(adapter);
iounmap(adapter->hw.hw_addr);
@ -3267,6 +3347,11 @@ static struct pci_driver ixgbevf_driver = {
.id_table = ixgbevf_pci_tbl,
.probe = ixgbevf_probe,
.remove = __devexit_p(ixgbevf_remove),
#ifdef CONFIG_PM
/* Power Management Hooks */
.suspend = ixgbevf_suspend,
.resume = ixgbevf_resume,
#endif
.shutdown = ixgbevf_shutdown,
.err_handler = &ixgbevf_err_handler
};