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nvethernet: add WOL feature support

Browse Source 
Enable WOL feature with ethtool
Get Wol feature details by - ethtool eth0
Set the feature for magic packet by - ethtool -s eth0 wol g

Bug 200545369

Change-Id: Ia4a9696b4a35b487d8e848a6c40de7510e8374d3
Signed-off-by: Narayan Reddy <narayanr@nvidia.com>
Signed-off-by: Mohan Thadikamalla <mohant@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2178086
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Rakesh Goyal <rgoyal@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Mohan Thadikamalla
2019-11-06 09:15:42 +05:30
committed by Revanth Kumar Uppala
parent 2bf3b730d8
commit 975de5f870
2 changed files with 151 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -1350,16 +1350,16 @@ static inline void ether_reset_stats(struct ether_priv_data *pdata)
* 1) Stopping PHY
* 2) Freeing tx/rx/common irqs
*
* @param[in] dev: Net device data structure.
* @param[in] ndev: Net device data structure.
*
* @note MAC Interface need to be registered.
*
* @retval 0 on success
* @retval "negative value" on failure.
*/
static int ether_close(struct net_device *dev)
static int ether_close(struct net_device *ndev)
{
struct ether_priv_data *pdata = netdev_priv(dev);
struct ether_priv_data *pdata = netdev_priv(ndev);
int ret = 0;
/* Unregister broadcasting MAC timestamp to clients */
@@ -1370,6 +1370,15 @@ static int ether_close(struct net_device *dev)
/* Stop and disconnect the PHY */
if (pdata->phydev != NULL) {
/* Check and clear WoL status */
if (device_may_wakeup(&ndev->dev)) {
if (disable_irq_wake(pdata->phydev->irq)) {
dev_warn(pdata->dev,
"PHY disable irq wake fail\n");
}
device_init_wakeup(&ndev->dev, false);
}
phy_stop(pdata->phydev);
phy_disconnect(pdata->phydev);
@@ -3613,6 +3622,18 @@ static int ether_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
/**
* @brief Ethernet platform driver suspend noirq callback.
*
* Alogorithm: Stops all data queues and PHY if the device
* does not wake capable. Disable TX and NAPI.
* Deinit OSI core, DMA and TX/RX interrupts.
*
* @param[in] dev: Platform device associated with platform driver.
*
* @retval 0 on success
* @retval "negative value" on failure.
*/
static int ether_suspend_noirq(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
@@ -3627,7 +3648,7 @@ static int ether_suspend_noirq(struct device *dev)
/* Stop workqueue while DUT is going to suspend state */
ether_stats_work_queue_stop(pdata);
if (pdata->phydev) {
if (pdata->phydev && !(device_may_wakeup(&ndev->dev))) {
phy_stop(pdata->phydev);
if (gpio_is_valid(pdata->phy_reset))
gpio_set_value(pdata->phy_reset, 0);
@@ -3653,6 +3674,18 @@ static int ether_suspend_noirq(struct device *dev)
return 0;
}
/**
* @brief Ethernet platform driver resume call.
*
* Alogorithm: Init OSI core, DMA and TX/RX interrupts.
* Enable PHY device if it does not wake capable,
* all data queues and NAPI.
*
* @param[in] pdata: OS dependent private data structure.
*
* @retval 0 on success
* @retval "negative value" on failure.
*/
static int ether_resume(struct ether_priv_data *pdata)
{
struct osi_core_priv_data *osi_core = pdata->osi_core;
@@ -3713,8 +3746,10 @@ static int ether_resume(struct ether_priv_data *pdata)
ether_napi_enable(pdata);
/* start the mac */
osi_start_mac(osi_core);
/* start phy */
phy_start(pdata->phydev);
if (pdata->phydev && !(device_may_wakeup(&ndev->dev))) {
/* start phy */
phy_start(pdata->phydev);
}
/* start network queues */
netif_tx_start_all_queues(ndev);
/* re-start workqueue */
@@ -3730,6 +3765,17 @@ err_core:
return ret;
}
/**
* @brief Ethernet platform driver resume noirq callback.
*
* Alogorithm: Enable clocks and call resume sequence,
* refer ether_resume function for resume sequence.
*
* @param[in] dev: Platform device associated with platform driver.
*
* @retval 0 on success
* @retval "negative value" on failure.
*/
static int ether_resume_noirq(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
@@ -3741,7 +3787,8 @@ static int ether_resume_noirq(struct device *dev)
ether_enable_clks(pdata);
if (gpio_is_valid(pdata->phy_reset) &&
if (!device_may_wakeup(&ndev->dev) &&
gpio_is_valid(pdata->phy_reset) &&
!gpio_get_value(pdata->phy_reset)) {
/* deassert phy reset */
gpio_set_value(pdata->phy_reset, 1);