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Commit 86a3e5d0 authored by Yishai Hadas's avatar Yishai Hadas Committed by David S. Miller
Browse files

net/mlx4_core: Add PCI calls for suspend/resume 



Implement suspend/resume callbacks in struct pci_driver.

Signed-off-by: default avatarYishai Hadas <yishaih@mellanox.com>
Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e5c9a705

drivers/net/ethernet/mellanox/mlx4/main.c

+46 −0
Original line number Diff line number Diff line
@@ -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,

};