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net/mlx4_core: Add PCI calls for suspend/resume

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Implement suspend/resume callbacks in struct pci_driver.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yishai Hadas 2018-05-09 18:29:03 +03:00 committed by David S. Miller
parent e5c9a70545
commit 86a3e5d02c
1 changed files with 46 additions and 0 deletions
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46
drivers/net/ethernet/mellanox/mlx4/main.c
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@ -4125,12 +4125,58 @@ static const struct pci_error_handlers mlx4_err_handler = {
.resume = mlx4_pci_resume,
};
static int mlx4_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
struct mlx4_dev *dev = persist->dev;
mlx4_err(dev, "suspend was called\n");
mutex_lock(&persist->interface_state_mutex);
if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
mlx4_unload_one(pdev);
mutex_unlock(&persist->interface_state_mutex);
return 0;
}
static int mlx4_resume(struct pci_dev *pdev)
{
struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
struct mlx4_dev *dev = persist->dev;
struct mlx4_priv *priv = mlx4_priv(dev);
int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
int total_vfs;
int ret = 0;
mlx4_err(dev, "resume was called\n");
total_vfs = dev->persist->num_vfs;
memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
mutex_lock(&persist->interface_state_mutex);
if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs,
nvfs, priv, 1);
if (!ret) {
ret = restore_current_port_types(dev,
dev->persist->curr_port_type,
dev->persist->curr_port_poss_type);
if (ret)
mlx4_err(dev, "resume: could not restore original port types (%d)\n", ret);
}
}
mutex_unlock(&persist->interface_state_mutex);
return ret;
}
static struct pci_driver mlx4_driver = {
.name = DRV_NAME,
.id_table = mlx4_pci_table,
.probe = mlx4_init_one,
.shutdown = mlx4_shutdown,
.remove = mlx4_remove_one,
.suspend = mlx4_suspend,
.resume = mlx4_resume,
.err_handler = &mlx4_err_handler,
};