This patch series implement the following fixes:
1. Disable WOL upon resume in order to restore full data path operation
2. Support WOL at both the PHY and MAC appropriately
3. Remove interrupt mask clearing from config_init
Patch-3 was sent seperately earlier. Review comments in link:
https://lore.kernel.org/lkml/[email protected]/T/
Raju Lakkaraju (3):
net: lan743x: disable WOL upon resume to restore full data path
operation
net: lan743x: Support WOL at both the PHY and MAC appropriately
net: phy: mxl-gpy: Remove interrupt mask clearing from config_init
.../net/ethernet/microchip/lan743x_ethtool.c | 44 ++++++++++++--
drivers/net/ethernet/microchip/lan743x_main.c | 48 ++++++++++++---
drivers/net/ethernet/microchip/lan743x_main.h | 28 +++++++++
drivers/net/phy/mxl-gpy.c | 58 ++++++++++++-------
4 files changed, 146 insertions(+), 32 deletions(-)
--
2.34.1
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 <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
---
Change List:
------------
V4 -> V5:
- Change Wakeup source message from info to debug
V3 -> V4:
- No change
V2 -> V3:
- No change
V1 -> V2:
- Repost - No change
V0 -> V1:
- Variable "data" change from "int" to "unsigned int"
drivers/net/ethernet/microchip/lan743x_main.c | 30 ++++++++++++++++---
drivers/net/ethernet/microchip/lan743x_main.h | 24 +++++++++++++++
2 files changed, 50 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;
}
diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h
index 645bc048e52e..fac0f33d10b2 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.h
+++ b/drivers/net/ethernet/microchip/lan743x_main.h
@@ -61,6 +61,7 @@
#define PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ BIT(18)
#define PMT_CTL_GPIO_WAKEUP_EN_ BIT(15)
#define PMT_CTL_EEE_WAKEUP_EN_ BIT(13)
+#define PMT_CTL_RES_CLR_WKP_MASK_ GENMASK(9, 8)
#define PMT_CTL_READY_ BIT(7)
#define PMT_CTL_ETH_PHY_RST_ BIT(4)
#define PMT_CTL_WOL_EN_ BIT(3)
@@ -227,12 +228,31 @@
#define MAC_WUCSR (0x140)
#define MAC_MP_SO_EN_ BIT(21)
#define MAC_WUCSR_RFE_WAKE_EN_ BIT(14)
+#define MAC_WUCSR_EEE_TX_WAKE_ BIT(13)
+#define MAC_WUCSR_EEE_RX_WAKE_ BIT(11)
+#define MAC_WUCSR_RFE_WAKE_FR_ BIT(9)
+#define MAC_WUCSR_PFDA_FR_ BIT(7)
+#define MAC_WUCSR_WUFR_ BIT(6)
+#define MAC_WUCSR_MPR_ BIT(5)
+#define MAC_WUCSR_BCAST_FR_ BIT(4)
#define MAC_WUCSR_PFDA_EN_ BIT(3)
#define MAC_WUCSR_WAKE_EN_ BIT(2)
#define MAC_WUCSR_MPEN_ BIT(1)
#define MAC_WUCSR_BCST_EN_ BIT(0)
#define MAC_WK_SRC (0x144)
+#define MAC_WK_SRC_ETH_PHY_WK_ BIT(17)
+#define MAC_WK_SRC_IPV6_TCPSYN_RCD_WK_ BIT(16)
+#define MAC_WK_SRC_IPV4_TCPSYN_RCD_WK_ BIT(15)
+#define MAC_WK_SRC_EEE_TX_WK_ BIT(14)
+#define MAC_WK_SRC_EEE_RX_WK_ BIT(13)
+#define MAC_WK_SRC_RFE_FR_WK_ BIT(12)
+#define MAC_WK_SRC_PFDA_FR_WK_ BIT(11)
+#define MAC_WK_SRC_MP_FR_WK_ BIT(10)
+#define MAC_WK_SRC_BCAST_FR_WK_ BIT(9)
+#define MAC_WK_SRC_WU_FR_WK_ BIT(8)
+#define MAC_WK_SRC_WK_FR_SAVED_ BIT(7)
+
#define MAC_MP_SO_HI (0x148)
#define MAC_MP_SO_LO (0x14C)
@@ -295,6 +315,10 @@
#define RFE_INDX(index) (0x580 + (index << 2))
#define MAC_WUCSR2 (0x600)
+#define MAC_WUCSR2_NS_RCD_ BIT(7)
+#define MAC_WUCSR2_ARP_RCD_ BIT(6)
+#define MAC_WUCSR2_IPV6_TCPSYN_RCD_ BIT(5)
+#define MAC_WUCSR2_IPV4_TCPSYN_RCD_ BIT(4)
#define SGMII_ACC (0x720)
#define SGMII_ACC_SGMII_BZY_ BIT(31)
--
2.34.1
Prevent options not supported by the PHY from being requested to it by the MAC
Whenever a WOL option is supported by both, the PHY is given priority
since that usually leads to better power savings.
Fixes: e9e13b6adc33 ("lan743x: fix for potential NULL pointer dereference with bare card")
Reviewed-by: Wojciech Drewek <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
---
Change List:
------------
V4 -> V5:
- Change Fixes's SHA from 13 chars to 12 chars
- Remove the "Reported-by" and "Closes" tags
V3 -> V4:
- Fix the support for "CONFIG_PM=N"
V2 -> V3:
- Remove the "phy does not support WOL" debug message which is not required
- Remove WAKE_PHY support option from Ethernet MAC (LAN743x/PCI11x1x) driver
- Add "phy_wol_supported" and "phy_wolopts" variables to hold PHY's WOL config
V1 -> V2:
- Repost - No change
V0 -> V1:
- Change the "phy does not support WOL" print from netif_info() to
netif_dbg()
.../net/ethernet/microchip/lan743x_ethtool.c | 44 +++++++++++++++++--
drivers/net/ethernet/microchip/lan743x_main.c | 18 ++++++--
drivers/net/ethernet/microchip/lan743x_main.h | 4 ++
3 files changed, 58 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c
index d0f4ff4ee075..0d1740d64676 100644
--- a/drivers/net/ethernet/microchip/lan743x_ethtool.c
+++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c
@@ -1127,8 +1127,12 @@ static void lan743x_ethtool_get_wol(struct net_device *netdev,
if (netdev->phydev)
phy_ethtool_get_wol(netdev->phydev, wol);
- wol->supported |= WAKE_BCAST | WAKE_UCAST | WAKE_MCAST |
- WAKE_MAGIC | WAKE_PHY | WAKE_ARP;
+ if (wol->supported != adapter->phy_wol_supported)
+ netif_warn(adapter, drv, adapter->netdev,
+ "PHY changed its supported WOL! old=%x, new=%x\n",
+ adapter->phy_wol_supported, wol->supported);
+
+ wol->supported |= MAC_SUPPORTED_WAKES;
if (adapter->is_pci11x1x)
wol->supported |= WAKE_MAGICSECURE;
@@ -1143,7 +1147,39 @@ static int lan743x_ethtool_set_wol(struct net_device *netdev,
{
struct lan743x_adapter *adapter = netdev_priv(netdev);
+ /* WAKE_MAGICSEGURE is a modifier of and only valid together with
+ * WAKE_MAGIC
+ */
+ if ((wol->wolopts & WAKE_MAGICSECURE) && !(wol->wolopts & WAKE_MAGIC))
+ return -EINVAL;
+
+ if (netdev->phydev) {
+ struct ethtool_wolinfo phy_wol;
+ int ret;
+
+ phy_wol.wolopts = wol->wolopts & adapter->phy_wol_supported;
+
+ /* If WAKE_MAGICSECURE was requested, filter out WAKE_MAGIC
+ * for PHYs that do not support WAKE_MAGICSECURE
+ */
+ if (wol->wolopts & WAKE_MAGICSECURE &&
+ !(adapter->phy_wol_supported & WAKE_MAGICSECURE))
+ phy_wol.wolopts &= ~WAKE_MAGIC;
+
+ ret = phy_ethtool_set_wol(netdev->phydev, &phy_wol);
+ if (ret && (ret != -EOPNOTSUPP))
+ return ret;
+
+ if (ret == -EOPNOTSUPP)
+ adapter->phy_wolopts = 0;
+ else
+ adapter->phy_wolopts = phy_wol.wolopts;
+ } else {
+ adapter->phy_wolopts = 0;
+ }
+
adapter->wolopts = 0;
+ wol->wolopts &= ~adapter->phy_wolopts;
if (wol->wolopts & WAKE_UCAST)
adapter->wolopts |= WAKE_UCAST;
if (wol->wolopts & WAKE_MCAST)
@@ -1164,10 +1200,10 @@ static int lan743x_ethtool_set_wol(struct net_device *netdev,
memset(adapter->sopass, 0, sizeof(u8) * SOPASS_MAX);
}
+ wol->wolopts = adapter->wolopts | adapter->phy_wolopts;
device_set_wakeup_enable(&adapter->pdev->dev, (bool)wol->wolopts);
- return netdev->phydev ? phy_ethtool_set_wol(netdev->phydev, wol)
- : -ENETDOWN;
+ return 0;
}
#endif /* CONFIG_PM */
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 48835bdc2e63..e418539565b1 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -3118,6 +3118,17 @@ static int lan743x_netdev_open(struct net_device *netdev)
if (ret)
goto close_tx;
}
+
+#ifdef CONFIG_PM
+ if (adapter->netdev->phydev) {
+ struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
+
+ phy_ethtool_get_wol(netdev->phydev, &wol);
+ adapter->phy_wol_supported = wol.supported;
+ adapter->phy_wolopts = wol.wolopts;
+ }
+#endif
+
return 0;
close_tx:
@@ -3587,10 +3598,9 @@ static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
- if (adapter->wolopts & WAKE_PHY) {
- pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
+ if (adapter->phy_wolopts)
pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
- }
+
if (adapter->wolopts & WAKE_MAGIC) {
wucsr |= MAC_WUCSR_MPEN_;
macrx |= MAC_RX_RXEN_;
@@ -3686,7 +3696,7 @@ static int lan743x_pm_suspend(struct device *dev)
lan743x_csr_write(adapter, MAC_WUCSR2, 0);
lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
- if (adapter->wolopts)
+ if (adapter->wolopts || adapter->phy_wolopts)
lan743x_pm_set_wol(adapter);
if (adapter->is_pci11x1x) {
diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h
index fac0f33d10b2..3b2585a384e2 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.h
+++ b/drivers/net/ethernet/microchip/lan743x_main.h
@@ -1042,6 +1042,8 @@ enum lan743x_sgmii_lsd {
LINK_2500_SLAVE
};
+#define MAC_SUPPORTED_WAKES (WAKE_BCAST | WAKE_UCAST | WAKE_MCAST | \
+ WAKE_MAGIC | WAKE_ARP)
struct lan743x_adapter {
struct net_device *netdev;
struct mii_bus *mdiobus;
@@ -1049,6 +1051,8 @@ struct lan743x_adapter {
#ifdef CONFIG_PM
u32 wolopts;
u8 sopass[SOPASS_MAX];
+ u32 phy_wolopts;
+ u32 phy_wol_supported;
#endif
struct pci_dev *pdev;
struct lan743x_csr csr;
--
2.34.1
When the system resumes from sleep, the phy_init_hw() function invokes
config_init(), which clears all interrupt masks and causes wake events to be
lost in subsequent wake sequences. Remove interrupt mask clearing from
config_init() and preserve relevant masks in config_intr().
Fixes: 7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")
Reviewed-by: Wojciech Drewek <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
---
Change List:
------------
V4 -> V5:
- No change
V3 -> V4:
- No change
V0 -> V3:
- Address the https://lore.kernel.org/lkml/[email protected]/T/
review comments
drivers/net/phy/mxl-gpy.c | 58 +++++++++++++++++++++++++--------------
1 file changed, 38 insertions(+), 20 deletions(-)
diff --git a/drivers/net/phy/mxl-gpy.c b/drivers/net/phy/mxl-gpy.c
index b2d36a3a96f1..e5f8ac4b4604 100644
--- a/drivers/net/phy/mxl-gpy.c
+++ b/drivers/net/phy/mxl-gpy.c
@@ -107,6 +107,7 @@ struct gpy_priv {
u8 fw_major;
u8 fw_minor;
+ u32 wolopts;
/* It takes 3 seconds to fully switch out of loopback mode before
* it can safely re-enter loopback mode. Record the time when
@@ -221,6 +222,15 @@ static int gpy_hwmon_register(struct phy_device *phydev)
}
#endif
+static int gpy_ack_interrupt(struct phy_device *phydev)
+{
+ int ret;
+
+ /* Clear all pending interrupts */
+ ret = phy_read(phydev, PHY_ISTAT);
+ return ret < 0 ? ret : 0;
+}
+
static int gpy_mbox_read(struct phy_device *phydev, u32 addr)
{
struct gpy_priv *priv = phydev->priv;
@@ -262,16 +272,8 @@ static int gpy_mbox_read(struct phy_device *phydev, u32 addr)
static int gpy_config_init(struct phy_device *phydev)
{
- int ret;
-
- /* Mask all interrupts */
- ret = phy_write(phydev, PHY_IMASK, 0);
- if (ret)
- return ret;
-
- /* Clear all pending interrupts */
- ret = phy_read(phydev, PHY_ISTAT);
- return ret < 0 ? ret : 0;
+ /* Nothing to configure. Configuration Requirement Placeholder */
+ return 0;
}
static int gpy21x_config_init(struct phy_device *phydev)
@@ -627,11 +629,23 @@ static int gpy_read_status(struct phy_device *phydev)
static int gpy_config_intr(struct phy_device *phydev)
{
+ struct gpy_priv *priv = phydev->priv;
u16 mask = 0;
+ int ret;
+
+ ret = gpy_ack_interrupt(phydev);
+ if (ret)
+ return ret;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
mask = PHY_IMASK_MASK;
+ if (priv->wolopts & WAKE_MAGIC)
+ mask |= PHY_IMASK_WOL;
+
+ if (priv->wolopts & WAKE_PHY)
+ mask |= PHY_IMASK_LSTC;
+
return phy_write(phydev, PHY_IMASK, mask);
}
@@ -678,6 +692,7 @@ static int gpy_set_wol(struct phy_device *phydev,
struct ethtool_wolinfo *wol)
{
struct net_device *attach_dev = phydev->attached_dev;
+ struct gpy_priv *priv = phydev->priv;
int ret;
if (wol->wolopts & WAKE_MAGIC) {
@@ -725,6 +740,8 @@ static int gpy_set_wol(struct phy_device *phydev,
ret = phy_read(phydev, PHY_ISTAT);
if (ret < 0)
return ret;
+
+ priv->wolopts |= WAKE_MAGIC;
} else {
/* Disable magic packet matching */
ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2,
@@ -732,6 +749,13 @@ static int gpy_set_wol(struct phy_device *phydev,
WOL_EN);
if (ret < 0)
return ret;
+
+ /* Disable the WOL interrupt */
+ ret = phy_clear_bits(phydev, PHY_IMASK, PHY_IMASK_WOL);
+ if (ret < 0)
+ return ret;
+
+ priv->wolopts &= ~WAKE_MAGIC;
}
if (wol->wolopts & WAKE_PHY) {
@@ -748,9 +772,11 @@ static int gpy_set_wol(struct phy_device *phydev,
if (ret & (PHY_IMASK_MASK & ~PHY_IMASK_LSTC))
phy_trigger_machine(phydev);
+ priv->wolopts |= WAKE_PHY;
return 0;
}
+ priv->wolopts &= ~WAKE_PHY;
/* Disable the link state change interrupt */
return phy_clear_bits(phydev, PHY_IMASK, PHY_IMASK_LSTC);
}
@@ -758,18 +784,10 @@ static int gpy_set_wol(struct phy_device *phydev,
static void gpy_get_wol(struct phy_device *phydev,
struct ethtool_wolinfo *wol)
{
- int ret;
+ struct gpy_priv *priv = phydev->priv;
wol->supported = WAKE_MAGIC | WAKE_PHY;
- wol->wolopts = 0;
-
- ret = phy_read_mmd(phydev, MDIO_MMD_VEND2, VPSPEC2_WOL_CTL);
- if (ret & WOL_EN)
- wol->wolopts |= WAKE_MAGIC;
-
- ret = phy_read(phydev, PHY_IMASK);
- if (ret & PHY_IMASK_LSTC)
- wol->wolopts |= WAKE_PHY;
+ wol->wolopts = priv->wolopts;
}
static int gpy_loopback(struct phy_device *phydev, bool enable)
--
2.34.1