Commit 974365e5 authored by Catherine Sullivan's avatar Catherine Sullivan Committed by David S. Miller

gve: Implement suspend/resume/shutdown

Add support for suspend, resume and shutdown.
Signed-off-by: default avatarCatherine Sullivan <csully@google.com>
Signed-off-by: default avatarDavid Awogbemila <awogbemila@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 497dbb2b
...@@ -557,6 +557,8 @@ struct gve_priv { ...@@ -557,6 +557,8 @@ struct gve_priv {
u32 page_alloc_fail; /* count of page alloc fails */ u32 page_alloc_fail; /* count of page alloc fails */
u32 dma_mapping_error; /* count of dma mapping errors */ u32 dma_mapping_error; /* count of dma mapping errors */
u32 stats_report_trigger_cnt; /* count of device-requested stats-reports since last reset */ u32 stats_report_trigger_cnt; /* count of device-requested stats-reports since last reset */
u32 suspend_cnt; /* count of times suspended */
u32 resume_cnt; /* count of times resumed */
struct workqueue_struct *gve_wq; struct workqueue_struct *gve_wq;
struct work_struct service_task; struct work_struct service_task;
struct work_struct stats_report_task; struct work_struct stats_report_task;
...@@ -573,6 +575,7 @@ struct gve_priv { ...@@ -573,6 +575,7 @@ struct gve_priv {
/* Gvnic device link speed from hypervisor. */ /* Gvnic device link speed from hypervisor. */
u64 link_speed; u64 link_speed;
bool up_before_suspend; /* True if dev was up before suspend */
struct gve_options_dqo_rda options_dqo_rda; struct gve_options_dqo_rda options_dqo_rda;
struct gve_ptype_lut *ptype_lut_dqo; struct gve_ptype_lut *ptype_lut_dqo;
......
...@@ -1676,6 +1676,58 @@ static void gve_remove(struct pci_dev *pdev) ...@@ -1676,6 +1676,58 @@ static void gve_remove(struct pci_dev *pdev)
pci_disable_device(pdev); pci_disable_device(pdev);
} }
static void gve_shutdown(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
bool was_up = netif_carrier_ok(priv->dev);
rtnl_lock();
if (was_up && gve_close(priv->dev)) {
/* If the dev was up, attempt to close, if close fails, reset */
gve_reset_and_teardown(priv, was_up);
} else {
/* If the dev wasn't up or close worked, finish tearing down */
gve_teardown_priv_resources(priv);
}
rtnl_unlock();
}
#ifdef CONFIG_PM
static int gve_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
bool was_up = netif_carrier_ok(priv->dev);
priv->suspend_cnt++;
rtnl_lock();
if (was_up && gve_close(priv->dev)) {
/* If the dev was up, attempt to close, if close fails, reset */
gve_reset_and_teardown(priv, was_up);
} else {
/* If the dev wasn't up or close worked, finish tearing down */
gve_teardown_priv_resources(priv);
}
priv->up_before_suspend = was_up;
rtnl_unlock();
return 0;
}
static int gve_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
int err;
priv->resume_cnt++;
rtnl_lock();
err = gve_reset_recovery(priv, priv->up_before_suspend);
rtnl_unlock();
return err;
}
#endif /* CONFIG_PM */
static const struct pci_device_id gve_id_table[] = { static const struct pci_device_id gve_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_GOOGLE, PCI_DEV_ID_GVNIC) }, { PCI_DEVICE(PCI_VENDOR_ID_GOOGLE, PCI_DEV_ID_GVNIC) },
{ } { }
...@@ -1686,6 +1738,11 @@ static struct pci_driver gvnic_driver = { ...@@ -1686,6 +1738,11 @@ static struct pci_driver gvnic_driver = {
.id_table = gve_id_table, .id_table = gve_id_table,
.probe = gve_probe, .probe = gve_probe,
.remove = gve_remove, .remove = gve_remove,
.shutdown = gve_shutdown,
#ifdef CONFIG_PM
.suspend = gve_suspend,
.resume = gve_resume,
#endif
}; };
module_pci_driver(gvnic_driver); module_pci_driver(gvnic_driver);
......
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