diff options
| author |   Raju Lakkaraju <Raju.Lakkaraju@microchip.com> | 2024-06-14 22:41:55 +0530 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2024-06-18 12:04:23 +0200 |
| commit | 7725363936a88351b71495774c1e0e852ae4cdca (patch) | |
| tree | 1696994c08b7c76997e2e7ed0cd8e221814fda2e /drivers/net/ethernet/microchip/lan743x_main.c | |
| parent | qca_spi: Make interrupt remembering atomic (diff) | |
| download | wireguard-linux-7725363936a88351b71495774c1e0e852ae4cdca.tar.xz wireguard-linux-7725363936a88351b71495774c1e0e852ae4cdca.zip | |
net: lan743x: disable WOL upon resume to restore full data path operation
When Wake-on-LAN (WoL) is active and the system is in suspend mode, triggering
a system event can wake the system from sleep, which may block the data path.
To restore normal data path functionality after waking, disable all wake-up
events. Furthermore, clear all Write 1 to Clear (W1C) status bits by writing
1's to them.
Fixes: 4d94282afd95 ("lan743x: Add power management support")
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/microchip/lan743x_main.c')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index 6be8a43c908a..48835bdc2e63 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -3575,7 +3575,7 @@ static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) /* clear wake settings */ pmtctl = lan743x_csr_read(adapter, PMT_CTL); - pmtctl |= PMT_CTL_WUPS_MASK_; + pmtctl |= PMT_CTL_WUPS_MASK_ | PMT_CTL_RES_CLR_WKP_MASK_; pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); @@ -3710,6 +3710,7 @@ static int lan743x_pm_resume(struct device *dev) struct pci_dev *pdev = to_pci_dev(dev); struct net_device *netdev = pci_get_drvdata(pdev); struct lan743x_adapter *adapter = netdev_priv(netdev); + u32 data; int ret; pci_set_power_state(pdev, PCI_D0); @@ -3728,6 +3729,30 @@ static int lan743x_pm_resume(struct device *dev) return ret; } + ret = lan743x_csr_read(adapter, MAC_WK_SRC); + netif_dbg(adapter, drv, adapter->netdev, + "Wakeup source : 0x%08X\n", ret); + + /* Clear the wol configuration and status bits. Note that + * the status bits are "Write One to Clear (W1C)" + */ + data = MAC_WUCSR_EEE_TX_WAKE_ | MAC_WUCSR_EEE_RX_WAKE_ | + MAC_WUCSR_RFE_WAKE_FR_ | MAC_WUCSR_PFDA_FR_ | MAC_WUCSR_WUFR_ | + MAC_WUCSR_MPR_ | MAC_WUCSR_BCAST_FR_; + lan743x_csr_write(adapter, MAC_WUCSR, data); + + data = MAC_WUCSR2_NS_RCD_ | MAC_WUCSR2_ARP_RCD_ | + MAC_WUCSR2_IPV6_TCPSYN_RCD_ | MAC_WUCSR2_IPV4_TCPSYN_RCD_; + lan743x_csr_write(adapter, MAC_WUCSR2, data); + + data = MAC_WK_SRC_ETH_PHY_WK_ | MAC_WK_SRC_IPV6_TCPSYN_RCD_WK_ | + MAC_WK_SRC_IPV4_TCPSYN_RCD_WK_ | MAC_WK_SRC_EEE_TX_WK_ | + MAC_WK_SRC_EEE_RX_WK_ | MAC_WK_SRC_RFE_FR_WK_ | + MAC_WK_SRC_PFDA_FR_WK_ | MAC_WK_SRC_MP_FR_WK_ | + MAC_WK_SRC_BCAST_FR_WK_ | MAC_WK_SRC_WU_FR_WK_ | + MAC_WK_SRC_WK_FR_SAVED_; + lan743x_csr_write(adapter, MAC_WK_SRC, data); + /* open netdev when netdev is at running state while resume. * For instance, it is true when system wakesup after pm-suspend * However, it is false when system wakes up after suspend GUI menu @@ -3736,9 +3761,6 @@ static int lan743x_pm_resume(struct device *dev) lan743x_netdev_open(netdev); netif_device_attach(netdev); - ret = lan743x_csr_read(adapter, MAC_WK_SRC); - netif_info(adapter, drv, adapter->netdev, - "Wakeup source : 0x%08X\n", ret); return 0; } |