1 files changed, 96 insertions, 0 deletions

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 14ef27fa8416..b016719d8f67 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -2243,11 +2243,107 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
         return rc;
 }
 
+static int efx_pm_freeze(struct device *dev)
+{
+        struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
+
+        efx->state = STATE_FINI;
+
+        netif_device_detach(efx->net_dev);
+
+        efx_stop_all(efx);
+        efx_fini_channels(efx);
+
+        return 0;
+}
+
+static int efx_pm_thaw(struct device *dev)
+{
+        struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
+
+        efx->state = STATE_INIT;
+
+        efx_init_channels(efx);
+
+        mutex_lock(&efx->mac_lock);
+        efx->phy_op->reconfigure(efx);
+        mutex_unlock(&efx->mac_lock);
+
+        efx_start_all(efx);
+
+        netif_device_attach(efx->net_dev);
+
+        efx->state = STATE_RUNNING;
+
+        efx->type->resume_wol(efx);
+
+        return 0;
+}
+
+static int efx_pm_poweroff(struct device *dev)
+{
+        struct pci_dev *pci_dev = to_pci_dev(dev);
+        struct efx_nic *efx = pci_get_drvdata(pci_dev);
+
+        efx->type->fini(efx);
+
+        efx->reset_pending = RESET_TYPE_NONE;
+
+        pci_save_state(pci_dev);
+        return pci_set_power_state(pci_dev, PCI_D3hot);
+}
+
+/* Used for both resume and restore */
+static int efx_pm_resume(struct device *dev)
+{
+        struct pci_dev *pci_dev = to_pci_dev(dev);
+        struct efx_nic *efx = pci_get_drvdata(pci_dev);
+        int rc;
+
+        rc = pci_set_power_state(pci_dev, PCI_D0);
+        if (rc)
+                return rc;
+        pci_restore_state(pci_dev);
+        rc = pci_enable_device(pci_dev);
+        if (rc)
+                return rc;
+        pci_set_master(efx->pci_dev);
+        rc = efx->type->reset(efx, RESET_TYPE_ALL);
+        if (rc)
+                return rc;
+        rc = efx->type->init(efx);
+        if (rc)
+                return rc;
+        efx_pm_thaw(dev);
+        return 0;
+}
+
+static int efx_pm_suspend(struct device *dev)
+{
+        int rc;
+
+        efx_pm_freeze(dev);
+        rc = efx_pm_poweroff(dev);
+        if (rc)
+                efx_pm_resume(dev);
+        return rc;
+}
+
+static struct dev_pm_ops efx_pm_ops = {
+        .suspend        = efx_pm_suspend,
+        .resume         = efx_pm_resume,
+        .freeze         = efx_pm_freeze,
+        .thaw           = efx_pm_thaw,
+        .poweroff       = efx_pm_poweroff,
+        .restore        = efx_pm_resume,
+};
+
 static struct pci_driver efx_pci_driver = {
         .name           = EFX_DRIVER_NAME,
         .id_table       = efx_pci_table,
         .probe          = efx_pci_probe,
         .remove         = efx_pci_remove,
+        .driver.pm      = &efx_pm_ops,
 };
 
 /**************************************************************************