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Commit a2ec6172 authored by Sudarsana Kalluru's avatar Sudarsana Kalluru Committed by David S. Miller
Browse files

qede: Add support for link 



This adds basic link functionality to qede - driver still doesn't provide
users with an API to change any link property, but it does request qed to
initialize the link using default configuration, and registers a callback
that allows it to get link notifications.

This patch adds the ability of the driver to set the carrier as active and
to enable traffic as a result of async. link notifications.
Following this patch, driver should be capable of running traffic.

Signed-off-by: default avatarSudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc875c2e

drivers/net/ethernet/qlogic/qede/qede_main.c

+47 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id); 
static void qede_remove(struct pci_dev *pdev);

static int qede_alloc_rx_buffer(struct qede_dev *edev,

				struct qede_rx_queue *rxq);

static void qede_link_update(void *dev, struct qed_link_output *link);



static struct pci_driver qede_pci_driver = {

	.name = "qede",
@@ -95,6 +96,12 @@ static struct pci_driver qede_pci_driver = { 
	.remove = qede_remove,

};



static struct qed_eth_cb_ops qede_ll_ops = {

	{

		.link_update = qede_link_update,

	},

};



static int qede_netdev_event(struct notifier_block *this, unsigned long event,

			     void *ptr)

{
@@ -1304,6 +1311,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, 


	edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);



	edev->ops->register_ops(cdev, &qede_ll_ops, edev);



	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);

	mutex_init(&edev->qede_lock);
@@ -2099,6 +2108,7 @@ enum qede_unload_mode { 


static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)

{

	struct qed_link_params link_params;

	int rc;



	DP_INFO(edev, "Starting qede unload\n");
@@ -2110,6 +2120,10 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode) 
	netif_tx_disable(edev->ndev);

	netif_carrier_off(edev->ndev);



	/* Reset the link */

	memset(&link_params, 0, sizeof(link_params));

	link_params.link_up = false;

	edev->ops->common->set_link(edev->cdev, &link_params);

	rc = qede_stop_queues(edev);

	if (rc) {

		qede_sync_free_irqs(edev);
@@ -2140,6 +2154,8 @@ enum qede_load_mode { 


static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)

{

	struct qed_link_params link_params;

	struct qed_link_output link_output;

	int rc;



	DP_INFO(edev, "Starting qede load\n");
@@ -2183,6 +2199,17 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode) 
	mutex_lock(&edev->qede_lock);

	edev->state = QEDE_STATE_OPEN;

	mutex_unlock(&edev->qede_lock);



	/* Ask for link-up using current configuration */

	memset(&link_params, 0, sizeof(link_params));

	link_params.link_up = true;

	edev->ops->common->set_link(edev->cdev, &link_params);



	/* Query whether link is already-up */

	memset(&link_output, 0, sizeof(link_output));

	edev->ops->common->get_link(edev->cdev, &link_output);

	qede_link_update(edev, &link_output);



	DP_INFO(edev, "Ending successfully qede load\n");



	return 0;
@@ -2223,6 +2250,26 @@ static int qede_close(struct net_device *ndev) 
	return 0;

}



static void qede_link_update(void *dev, struct qed_link_output *link)

{

	struct qede_dev *edev = dev;



	if (!netif_running(edev->ndev)) {

		DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");

		return;

	}



	if (link->link_up) {

		DP_NOTICE(edev, "Link is up\n");

		netif_tx_start_all_queues(edev->ndev);

		netif_carrier_on(edev->ndev);

	} else {

		DP_NOTICE(edev, "Link is down\n");

		netif_tx_disable(edev->ndev);

		netif_carrier_off(edev->ndev);

	}

}



static int qede_set_mac_addr(struct net_device *ndev, void *p)

{

	struct qede_dev *edev = netdev_priv(ndev);