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Date: Mon, 19 Jun 2023 17:42:26 +0800
From: Mengyuan Lou <mengyuanlou@...-swift.com>
To: netdev@...r.kernel.org
Cc: Mengyuan Lou <mengyuanlou@...-swift.com>
Subject: [PATCH net-next] net: ngbe: add Wake on Lan support
Implement ethtool_ops get_wol and set_wol.
Implement Wake-on-LAN support.
Magic packets are checked by fw, for now just support
WAKE_MAGIC.
Signed-off-by: Mengyuan Lou <mengyuanlou@...-swift.com>
---
drivers/net/ethernet/wangxun/libwx/wx_hw.c | 3 +-
drivers/net/ethernet/wangxun/libwx/wx_hw.h | 1 +
drivers/net/ethernet/wangxun/libwx/wx_type.h | 4 ++
.../net/ethernet/wangxun/ngbe/ngbe_ethtool.c | 37 +++++++++++
drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 62 +++++++++++++++++--
drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c | 1 +
6 files changed, 103 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index 39a9aeee7aab..ad09ab1d1209 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -1501,7 +1501,7 @@ static void wx_restore_vlan(struct wx *wx)
*
* Configure the Rx unit of the MAC after a reset.
**/
-static void wx_configure_rx(struct wx *wx)
+void wx_configure_rx(struct wx *wx)
{
u32 psrtype, i;
int ret;
@@ -1545,6 +1545,7 @@ static void wx_configure_rx(struct wx *wx)
wx_enable_rx(wx);
wx_enable_sec_rx_path(wx);
}
+EXPORT_SYMBOL(wx_configure_rx);
static void wx_configure_isb(struct wx *wx)
{
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.h b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
index 1f93ca32c921..b95090e973ae 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
@@ -25,6 +25,7 @@ void wx_disable_rx(struct wx *wx);
void wx_set_rx_mode(struct net_device *netdev);
int wx_change_mtu(struct net_device *netdev, int new_mtu);
void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring);
+void wx_configure_rx(struct wx *wx);
void wx_configure(struct wx *wx);
void wx_start_hw(struct wx *wx);
int wx_disable_pcie_master(struct wx *wx);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 5063846e1b52..6da3388355ea 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -158,6 +158,10 @@
#define WX_PSR_LAN_FLEX_DW_H(_i) (0x15C04 + ((_i) * 16))
#define WX_PSR_LAN_FLEX_MSK(_i) (0x15C08 + ((_i) * 16))
+#define WX_PSR_WKUP_CTL 0x15B80
+/* Wake Up Filter Control Bit */
+#define WX_PSR_WKUP_CTL_MAG BIT(1) /* Magic Packet Wakeup Enable */
+
/* vlan tbl */
#define WX_PSR_VLAN_TBL(_i) (0x16000 + ((_i) * 4))
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c
index 5b25834baf38..d2a80558e086 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c
@@ -6,14 +6,51 @@
#include <linux/netdevice.h>
#include "../libwx/wx_ethtool.h"
+#include "../libwx/wx_type.h"
#include "ngbe_ethtool.h"
+static void ngbe_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ struct wx *wx = netdev_priv(netdev);
+
+ if (!wx->wol_enabled)
+ return;
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = 0;
+ if (wx->wol & WX_PSR_WKUP_CTL_MAG)
+ wol->wolopts |= WAKE_MAGIC;
+}
+
+static int ngbe_set_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ struct wx *wx = netdev_priv(netdev);
+ struct pci_dev *pdev = wx->pdev;
+
+ if (!wx->wol_enabled)
+ return -EOPNOTSUPP;
+ if (wol->wolopts & WAKE_MAGIC)
+ return -EOPNOTSUPP;
+
+ wx->wol = 0;
+ if (wol->wolopts & WAKE_MAGIC)
+ wx->wol = WX_PSR_WKUP_CTL_MAG;
+ netdev->wol_enabled = !!(wx->wol);
+ wr32(wx, WX_PSR_WKUP_CTL, wx->wol);
+ device_set_wakeup_enable(&pdev->dev, wx->wol);
+
+ return 0;
+}
+
static const struct ethtool_ops ngbe_ethtool_ops = {
.get_drvinfo = wx_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
.set_link_ksettings = phy_ethtool_set_link_ksettings,
.nway_reset = phy_ethtool_nway_reset,
+ .get_wol = ngbe_get_wol,
+ .set_wol = ngbe_set_wol,
};
void ngbe_set_ethtool_ops(struct net_device *netdev)
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index c99a5d3de72e..e5aaac2746d5 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -440,14 +440,26 @@ static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
{
struct wx *wx = pci_get_drvdata(pdev);
struct net_device *netdev;
+ u32 wufc = wx->wol;
netdev = wx->netdev;
+ rtnl_lock();
netif_device_detach(netdev);
- rtnl_lock();
if (netif_running(netdev))
- ngbe_down(wx);
+ ngbe_close(netdev);
+ wx_clear_interrupt_scheme(wx);
rtnl_unlock();
+
+ if (wufc) {
+ wx_set_rx_mode(netdev);
+ wx_configure_rx(wx);
+ wr32(wx, NGBE_PSR_WKUP_CTL, wufc);
+ } else {
+ wr32(wx, NGBE_PSR_WKUP_CTL, 0);
+ }
+ pci_wake_from_d3(pdev, !!wufc);
+ *enable_wake = !!wufc;
wx_control_hw(wx, false);
pci_disable_device(pdev);
@@ -624,9 +636,8 @@ static int ngbe_probe(struct pci_dev *pdev,
if (wx->wol_enabled)
wx->wol = NGBE_PSR_WKUP_CTL_MAG;
- wx->wol_enabled = !!(wx->wol);
+ netdev->wol_enabled = !!(wx->wol);
wr32(wx, NGBE_PSR_WKUP_CTL, wx->wol);
-
device_set_wakeup_enable(&pdev->dev, wx->wol);
/* Save off EEPROM version number and Option Rom version which
@@ -712,11 +723,54 @@ static void ngbe_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
+static int ngbe_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ bool wake;
+
+ ngbe_dev_shutdown(pdev, &wake);
+ device_set_wakeup_enable(&pdev->dev, wake);
+
+ return 0;
+}
+
+static int ngbe_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev;
+ struct wx *wx;
+ u32 err;
+
+ wx = pci_get_drvdata(pdev);
+ netdev = wx->netdev;
+
+ err = pci_enable_device_mem(pdev);
+ if (err) {
+ wx_err(wx, "Cannot enable PCI device from suspend\n");
+ return err;
+ }
+ /* make sure to complete pre-operations */
+ smp_mb__before_atomic();
+ pci_set_master(pdev);
+ device_wakeup_disable(&pdev->dev);
+
+ ngbe_reset_hw(wx);
+ rtnl_lock();
+ err = wx_init_interrupt_scheme(wx);
+ if (!err && netif_running(netdev))
+ err = ngbe_open(netdev);
+ if (!err)
+ netif_device_attach(netdev);
+ rtnl_unlock();
+
+ return 0;
+}
+
static struct pci_driver ngbe_driver = {
.name = ngbe_driver_name,
.id_table = ngbe_pci_tbl,
.probe = ngbe_probe,
.remove = ngbe_remove,
+ .suspend = ngbe_suspend,
+ .resume = ngbe_resume,
.shutdown = ngbe_shutdown,
};
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
index c9ddbbc3fa4f..cc2f325a52f7 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_mdio.c
@@ -236,6 +236,7 @@ static void ngbe_phy_fixup(struct wx *wx)
phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
+ phydev->mac_managed_pm = true;
if (wx->mac_type != em_mac_type_mdi)
return;
/* disable EEE, internal phy does not support eee */
--
2.41.0
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