1 // SPDX-License-Identifier: GPL-2.0-only
3  * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support
5  * Copyright (c) 2014-2025 Broadcom
37 /* ethtool function - get WOL (Wake on LAN) settings, Only Magic Packet
43 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_get_wol()
46 	if (dev->phydev) {  in bcmgenet_get_wol()
47 		phy_ethtool_get_wol(dev->phydev, wol);  in bcmgenet_get_wol()
48 		phy_wolopts = wol->wolopts;  in bcmgenet_get_wol()
51 	/* MAC is not wake-up capable, return what the PHY does */  in bcmgenet_get_wol()
56 	wol->supported |= WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;  in bcmgenet_get_wol()
57 	wol->wolopts |= priv->wolopts;  in bcmgenet_get_wol()
59 	/* Return the PHY configured magic password */  in bcmgenet_get_wol()
64 	memset(wol->sopass, 0, sizeof(wol->sopass));  in bcmgenet_get_wol()
65 	if (wol->wolopts & WAKE_MAGICSECURE)  in bcmgenet_get_wol()
66 		memcpy(wol->sopass, priv->sopass, sizeof(priv->sopass));  in bcmgenet_get_wol()
69 /* ethtool function - set WOL (Wake on LAN) settings.
70  * Only for magic packet detection mode.
75 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_set_wol()
78 	/* Try Wake-on-LAN from the PHY first */  in bcmgenet_set_wol()
79 	if (dev->phydev) {  in bcmgenet_set_wol()
80 		ret = phy_ethtool_set_wol(dev->phydev, wol);  in bcmgenet_set_wol()
81 		if (ret != -EOPNOTSUPP && wol->wolopts)  in bcmgenet_set_wol()
86 		return -ENOTSUPP;  in bcmgenet_set_wol()
88 	if (wol->wolopts & ~(WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER))  in bcmgenet_set_wol()
89 		return -EINVAL;  in bcmgenet_set_wol()
91 	if (wol->wolopts & WAKE_MAGICSECURE)  in bcmgenet_set_wol()
92 		memcpy(priv->sopass, wol->sopass, sizeof(priv->sopass));  in bcmgenet_set_wol()
95 	if (wol->wolopts) {  in bcmgenet_set_wol()
98 		if (priv->wol_irq_disabled) {  in bcmgenet_set_wol()
99 			enable_irq_wake(priv->wol_irq);  in bcmgenet_set_wol()
100 			enable_irq_wake(priv->irq0);  in bcmgenet_set_wol()
102 		priv->wol_irq_disabled = false;  in bcmgenet_set_wol()
106 		if (!priv->wol_irq_disabled) {  in bcmgenet_set_wol()
107 			disable_irq_wake(priv->wol_irq);  in bcmgenet_set_wol()
108 			disable_irq_wake(priv->irq0);  in bcmgenet_set_wol()
110 		priv->wol_irq_disabled = true;  in bcmgenet_set_wol()
113 	priv->wolopts = wol->wolopts;  in bcmgenet_set_wol()
120 	struct net_device *dev = priv->dev;  in bcmgenet_poll_wol_status()
128 			return -ETIMEDOUT;  in bcmgenet_poll_wol_status()
138 	bcmgenet_umac_writel(priv, get_unaligned_be16(&priv->sopass[0]),  in bcmgenet_set_mpd_password()
140 	bcmgenet_umac_writel(priv, get_unaligned_be32(&priv->sopass[2]),  in bcmgenet_set_mpd_password()
147 	struct net_device *dev = priv->dev;  in bcmgenet_wol_power_down_cfg()
153 		return -EINVAL;  in bcmgenet_wol_power_down_cfg()
156 	if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {  in bcmgenet_wol_power_down_cfg()
159 		if (priv->wolopts & WAKE_MAGICSECURE) {  in bcmgenet_wol_power_down_cfg()
180 	netif_dbg(priv, wol, dev, "MPD WOL-ready status set after %d msec\n",  in bcmgenet_wol_power_down_cfg()
184 	mutex_lock(&dev->phydev->lock);  in bcmgenet_wol_power_down_cfg()
185 	dev->phydev->state = PHY_READY;  in bcmgenet_wol_power_down_cfg()
186 	mutex_unlock(&dev->phydev->lock);  in bcmgenet_wol_power_down_cfg()
188 	clk_prepare_enable(priv->clk_wol);  in bcmgenet_wol_power_down_cfg()
191 	spin_lock_bh(&priv->reg_lock);  in bcmgenet_wol_power_down_cfg()
193 	priv->crc_fwd_en = 1;  in bcmgenet_wol_power_down_cfg()
203 	spin_unlock_bh(&priv->reg_lock);  in bcmgenet_wol_power_down_cfg()
217 	struct net_device *dev = priv->dev;  in bcmgenet_wol_power_up_cfg()
221 		netif_err(priv, wol, priv->dev, "invalid mode: %d\n", mode);  in bcmgenet_wol_power_up_cfg()
222 		return -EINVAL;  in bcmgenet_wol_power_up_cfg()
225 	clk_disable_unprepare(priv->clk_wol);  in bcmgenet_wol_power_up_cfg()
226 	priv->crc_fwd_en = 0;  in bcmgenet_wol_power_up_cfg()
235 	/* Disable Magic Packet Detection */  in bcmgenet_wol_power_up_cfg()
236 	if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {  in bcmgenet_wol_power_up_cfg()
239 			return -EPERM;	/* already reset so skip the rest */  in bcmgenet_wol_power_up_cfg()
247 		return -EPERM;	/* already reset so skip the rest */  in bcmgenet_wol_power_up_cfg()
252 	spin_lock_bh(&priv->reg_lock);  in bcmgenet_wol_power_up_cfg()
256 	spin_unlock_bh(&priv->reg_lock);  in bcmgenet_wol_power_up_cfg()
259 	mutex_lock(&dev->phydev->lock);  in bcmgenet_wol_power_up_cfg()
260 	if (dev->phydev->link)  in bcmgenet_wol_power_up_cfg()
261 		dev->phydev->state = PHY_RUNNING;  in bcmgenet_wol_power_up_cfg()
263 		dev->phydev->state = PHY_NOLINK;  in bcmgenet_wol_power_up_cfg()
264 	mutex_unlock(&dev->phydev->lock);  in bcmgenet_wol_power_up_cfg()