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-rw-r--r--Documentation/devicetree/bindings/net/fsl-fec.txt2
-rw-r--r--drivers/net/ethernet/freescale/fec.h2
-rw-r--r--drivers/net/ethernet/freescale/fec_main.c104
-rw-r--r--include/linux/fec.h1
4 files changed, 99 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt
index 0c8775c45798..a9eb611bee68 100644
--- a/Documentation/devicetree/bindings/net/fsl-fec.txt
+++ b/Documentation/devicetree/bindings/net/fsl-fec.txt
@@ -22,6 +22,8 @@ Optional properties:
- fsl,num-rx-queues : The property is valid for enet-avb IP, which supports
hw multi queues. Should specify the rx queue number, otherwise set rx queue
number to 1.
+- fsl,magic-packet : If present, indicates that the hardware supports waking
+ up via magic packet.
Optional subnodes:
- mdio : specifies the mdio bus in the FEC, used as a container for phy nodes
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index df8bbddaeb37..d77a96fdf1dd 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -357,6 +357,7 @@ struct bufdesc_ex {
#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
+#define FEC_ENET_WAKEUP ((uint)0x00020000) /* Wakeup request */
#define FEC_ENET_TXF (FEC_ENET_TXF_0 | FEC_ENET_TXF_1 | FEC_ENET_TXF_2)
#define FEC_ENET_RXF (FEC_ENET_RXF_0 | FEC_ENET_RXF_1 | FEC_ENET_RXF_2)
#define FEC_ENET_TS_AVAIL ((uint)0x00010000)
@@ -512,6 +513,7 @@ struct fec_enet_private {
int irq[FEC_IRQ_NUM];
bool bufdesc_ex;
int pause_flag;
+ int wol_flag;
u32 quirks;
struct napi_struct napi;
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 5ebdf8dc8a31..49cd358c30fa 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -187,6 +187,9 @@ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
#define FEC_MMFR_RA(v) ((v & 0x1f) << 18)
#define FEC_MMFR_TA (2 << 16)
#define FEC_MMFR_DATA(v) (v & 0xffff)
+/* FEC ECR bits definition */
+#define FEC_ECR_MAGICEN (1 << 2)
+#define FEC_ECR_SLEEP (1 << 3)
#define FEC_MII_TIMEOUT 30000 /* us */
@@ -195,6 +198,9 @@ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
#define FEC_PAUSE_FLAG_AUTONEG 0x1
#define FEC_PAUSE_FLAG_ENABLE 0x2
+#define FEC_WOL_HAS_MAGIC_PACKET (0x1 << 0)
+#define FEC_WOL_FLAG_ENABLE (0x1 << 1)
+#define FEC_WOL_FLAG_SLEEP_ON (0x1 << 2)
#define COPYBREAK_DEFAULT 256
@@ -1089,7 +1095,9 @@ static void
fec_stop(struct net_device *ndev)
{
struct fec_enet_private *fep = netdev_priv(ndev);
+ struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8);
+ u32 val;
/* We cannot expect a graceful transmit stop without link !!! */
if (fep->link) {
@@ -1103,17 +1111,28 @@ fec_stop(struct net_device *ndev)
* For i.MX6SX SOC, enet use AXI bus, we use disable MAC
* instead of reset MAC itself.
*/
- if (fep->quirks & FEC_QUIRK_HAS_AVB) {
- writel(0, fep->hwp + FEC_ECNTRL);
+ if (!(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) {
+ if (fep->quirks & FEC_QUIRK_HAS_AVB) {
+ writel(0, fep->hwp + FEC_ECNTRL);
+ } else {
+ writel(1, fep->hwp + FEC_ECNTRL);
+ udelay(10);
+ }
+ writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
} else {
- writel(1, fep->hwp + FEC_ECNTRL);
- udelay(10);
+ writel(FEC_DEFAULT_IMASK | FEC_ENET_WAKEUP, fep->hwp + FEC_IMASK);
+ val = readl(fep->hwp + FEC_ECNTRL);
+ val |= (FEC_ECR_MAGICEN | FEC_ECR_SLEEP);
+ writel(val, fep->hwp + FEC_ECNTRL);
+
+ if (pdata && pdata->sleep_mode_enable)
+ pdata->sleep_mode_enable(true);
}
writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
- writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
/* We have to keep ENET enabled to have MII interrupt stay working */
- if (fep->quirks & FEC_QUIRK_ENET_MAC) {
+ if (fep->quirks & FEC_QUIRK_ENET_MAC &&
+ !(fep->wol_flag & FEC_WOL_FLAG_SLEEP_ON)) {
writel(2, fep->hwp + FEC_ECNTRL);
writel(rmii_mode, fep->hwp + FEC_R_CNTRL);
}
@@ -2427,6 +2446,44 @@ static int fec_enet_set_tunable(struct net_device *netdev,
return ret;
}
+static void
+fec_enet_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct fec_enet_private *fep = netdev_priv(ndev);
+
+ if (fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET) {
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = fep->wol_flag & FEC_WOL_FLAG_ENABLE ? WAKE_MAGIC : 0;
+ } else {
+ wol->supported = wol->wolopts = 0;
+ }
+}
+
+static int
+fec_enet_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct fec_enet_private *fep = netdev_priv(ndev);
+
+ if (!(fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET))
+ return -EINVAL;
+
+ if (wol->wolopts & ~WAKE_MAGIC)
+ return -EINVAL;
+
+ device_set_wakeup_enable(&ndev->dev, wol->wolopts & WAKE_MAGIC);
+ if (device_may_wakeup(&ndev->dev)) {
+ fep->wol_flag |= FEC_WOL_FLAG_ENABLE;
+ if (fep->irq[0] > 0)
+ enable_irq_wake(fep->irq[0]);
+ } else {
+ fep->wol_flag &= (~FEC_WOL_FLAG_ENABLE);
+ if (fep->irq[0] > 0)
+ disable_irq_wake(fep->irq[0]);
+ }
+
+ return 0;
+}
+
static const struct ethtool_ops fec_enet_ethtool_ops = {
.get_settings = fec_enet_get_settings,
.set_settings = fec_enet_set_settings,
@@ -2445,6 +2502,8 @@ static const struct ethtool_ops fec_enet_ethtool_ops = {
.get_ts_info = fec_enet_get_ts_info,
.get_tunable = fec_enet_get_tunable,
.set_tunable = fec_enet_set_tunable,
+ .get_wol = fec_enet_get_wol,
+ .set_wol = fec_enet_set_wol,
};
static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
@@ -2705,6 +2764,9 @@ fec_enet_open(struct net_device *ndev)
phy_start(fep->phy_dev);
netif_tx_start_all_queues(ndev);
+ device_set_wakeup_enable(&ndev->dev, fep->wol_flag &
+ FEC_WOL_FLAG_ENABLE);
+
return 0;
err_enet_mii_probe:
@@ -3153,6 +3215,9 @@ fec_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ndev);
+ if (of_get_property(np, "fsl,magic-packet", NULL))
+ fep->wol_flag |= FEC_WOL_HAS_MAGIC_PACKET;
+
phy_node = of_parse_phandle(np, "phy-handle", 0);
if (!phy_node && of_phy_is_fixed_link(np)) {
ret = of_phy_register_fixed_link(np);
@@ -3247,6 +3312,8 @@ fec_probe(struct platform_device *pdev)
0, pdev->name, ndev);
if (ret)
goto failed_irq;
+
+ fep->irq[i] = irq;
}
init_completion(&fep->mdio_done);
@@ -3263,6 +3330,9 @@ fec_probe(struct platform_device *pdev)
if (ret)
goto failed_register;
+ device_init_wakeup(&ndev->dev, fep->wol_flag &
+ FEC_WOL_HAS_MAGIC_PACKET);
+
if (fep->bufdesc_ex && fep->ptp_clock)
netdev_info(ndev, "registered PHC device %d\n", fep->dev_id);
@@ -3316,6 +3386,8 @@ static int __maybe_unused fec_suspend(struct device *dev)
rtnl_lock();
if (netif_running(ndev)) {
+ if (fep->wol_flag & FEC_WOL_FLAG_ENABLE)
+ fep->wol_flag |= FEC_WOL_FLAG_SLEEP_ON;
phy_stop(fep->phy_dev);
napi_disable(&fep->napi);
netif_tx_lock_bh(ndev);
@@ -3323,11 +3395,12 @@ static int __maybe_unused fec_suspend(struct device *dev)
netif_tx_unlock_bh(ndev);
fec_stop(ndev);
fec_enet_clk_enable(ndev, false);
- pinctrl_pm_select_sleep_state(&fep->pdev->dev);
+ if (!(fep->wol_flag & FEC_WOL_FLAG_ENABLE))
+ pinctrl_pm_select_sleep_state(&fep->pdev->dev);
}
rtnl_unlock();
- if (fep->reg_phy)
+ if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE))
regulator_disable(fep->reg_phy);
/* SOC supply clock to phy, when clock is disabled, phy link down
@@ -3343,9 +3416,11 @@ static int __maybe_unused fec_resume(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
struct fec_enet_private *fep = netdev_priv(ndev);
+ struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
int ret;
+ int val;
- if (fep->reg_phy) {
+ if (fep->reg_phy && !(fep->wol_flag & FEC_WOL_FLAG_ENABLE)) {
ret = regulator_enable(fep->reg_phy);
if (ret)
return ret;
@@ -3353,12 +3428,21 @@ static int __maybe_unused fec_resume(struct device *dev)
rtnl_lock();
if (netif_running(ndev)) {
- pinctrl_pm_select_default_state(&fep->pdev->dev);
ret = fec_enet_clk_enable(ndev, true);
if (ret) {
rtnl_unlock();
goto failed_clk;
}
+ if (fep->wol_flag & FEC_WOL_FLAG_ENABLE) {
+ if (pdata && pdata->sleep_mode_enable)
+ pdata->sleep_mode_enable(false);
+ val = readl(fep->hwp + FEC_ECNTRL);
+ val &= ~(FEC_ECR_MAGICEN | FEC_ECR_SLEEP);
+ writel(val, fep->hwp + FEC_ECNTRL);
+ fep->wol_flag &= ~FEC_WOL_FLAG_SLEEP_ON;
+ } else {
+ pinctrl_pm_select_default_state(&fep->pdev->dev);
+ }
fec_restart(ndev);
netif_tx_lock_bh(ndev);
netif_device_attach(ndev);
diff --git a/include/linux/fec.h b/include/linux/fec.h
index bcff455d1d53..1454a503622d 100644
--- a/include/linux/fec.h
+++ b/include/linux/fec.h
@@ -19,6 +19,7 @@
struct fec_platform_data {
phy_interface_t phy;
unsigned char mac[ETH_ALEN];
+ void (*sleep_mode_enable)(int enabled);
};
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.