Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Florian Fainelli | 866 | 71.22% | 9 | 36.00% |
Doug Berger | 330 | 27.14% | 13 | 52.00% |
Jeremy Linton | 15 | 1.23% | 1 | 4.00% |
Edwin Chan | 4 | 0.33% | 1 | 4.00% |
Thomas Gleixner | 1 | 0.08% | 1 | 4.00% |
Total | 1216 | 25 |
// SPDX-License-Identifier: GPL-2.0-only /* * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support * * Copyright (c) 2014-2024 Broadcom */ #define pr_fmt(fmt) "bcmgenet_wol: " fmt #include <linux/kernel.h> #include <linux/module.h> #include <linux/sched.h> #include <linux/types.h> #include <linux/interrupt.h> #include <linux/string.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/clk.h> #include <linux/platform_device.h> #include <net/arp.h> #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/netdevice.h> #include <linux/inetdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/in.h> #include <linux/ip.h> #include <linux/ipv6.h> #include <linux/phy.h> #include "bcmgenet.h" /* ethtool function - get WOL (Wake on LAN) settings, Only Magic Packet * Detection is supported through ethtool */ void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { struct bcmgenet_priv *priv = netdev_priv(dev); struct device *kdev = &priv->pdev->dev; if (dev->phydev) { phy_ethtool_get_wol(dev->phydev, wol); if (wol->supported) return; } if (!device_can_wakeup(kdev)) { wol->supported = 0; wol->wolopts = 0; return; } wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER; wol->wolopts = priv->wolopts; memset(wol->sopass, 0, sizeof(wol->sopass)); if (wol->wolopts & WAKE_MAGICSECURE) memcpy(wol->sopass, priv->sopass, sizeof(priv->sopass)); } /* ethtool function - set WOL (Wake on LAN) settings. * Only for magic packet detection mode. */ int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { struct bcmgenet_priv *priv = netdev_priv(dev); struct device *kdev = &priv->pdev->dev; int ret; /* Try Wake-on-LAN from the PHY first */ if (dev->phydev) { ret = phy_ethtool_set_wol(dev->phydev, wol); if (ret != -EOPNOTSUPP) return ret; } if (!device_can_wakeup(kdev)) return -ENOTSUPP; if (wol->wolopts & ~(WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER)) return -EINVAL; if (wol->wolopts & WAKE_MAGICSECURE) memcpy(priv->sopass, wol->sopass, sizeof(priv->sopass)); /* Flag the device and relevant IRQ as wakeup capable */ if (wol->wolopts) { device_set_wakeup_enable(kdev, 1); /* Avoid unbalanced enable_irq_wake calls */ if (priv->wol_irq_disabled) { enable_irq_wake(priv->wol_irq); enable_irq_wake(priv->irq0); } priv->wol_irq_disabled = false; } else { device_set_wakeup_enable(kdev, 0); /* Avoid unbalanced disable_irq_wake calls */ if (!priv->wol_irq_disabled) { disable_irq_wake(priv->wol_irq); disable_irq_wake(priv->irq0); } priv->wol_irq_disabled = true; } priv->wolopts = wol->wolopts; return 0; } static int bcmgenet_poll_wol_status(struct bcmgenet_priv *priv) { struct net_device *dev = priv->dev; int retries = 0; while (!(bcmgenet_rbuf_readl(priv, RBUF_STATUS) & RBUF_STATUS_WOL)) { retries++; if (retries > 5) { netdev_crit(dev, "polling wol mode timeout\n"); return -ETIMEDOUT; } mdelay(1); } return retries; } static void bcmgenet_set_mpd_password(struct bcmgenet_priv *priv) { bcmgenet_umac_writel(priv, get_unaligned_be16(&priv->sopass[0]), UMAC_MPD_PW_MS); bcmgenet_umac_writel(priv, get_unaligned_be32(&priv->sopass[2]), UMAC_MPD_PW_LS); } int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, enum bcmgenet_power_mode mode) { struct net_device *dev = priv->dev; struct bcmgenet_rxnfc_rule *rule; u32 reg, hfb_ctrl_reg, hfb_enable = 0; int retries = 0; if (mode != GENET_POWER_WOL_MAGIC) { netif_err(priv, wol, dev, "unsupported mode: %d\n", mode); return -EINVAL; } /* Can't suspend with WoL if MAC is still in reset */ spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); if (reg & CMD_SW_RESET) reg &= ~CMD_SW_RESET; /* disable RX */ reg &= ~CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); spin_unlock_bh(&priv->reg_lock); mdelay(10); if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) { reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL); reg |= MPD_EN; if (priv->wolopts & WAKE_MAGICSECURE) { bcmgenet_set_mpd_password(priv); reg |= MPD_PW_EN; } bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL); } hfb_ctrl_reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL); if (priv->wolopts & WAKE_FILTER) { list_for_each_entry(rule, &priv->rxnfc_list, list) if (rule->fs.ring_cookie == RX_CLS_FLOW_WAKE) hfb_enable |= (1 << rule->fs.location); reg = (hfb_ctrl_reg & ~RBUF_HFB_EN) | RBUF_ACPI_EN; bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL); } /* Do not leave UniMAC in MPD mode only */ retries = bcmgenet_poll_wol_status(priv); if (retries < 0) { reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL); reg &= ~(MPD_EN | MPD_PW_EN); bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL); bcmgenet_hfb_reg_writel(priv, hfb_ctrl_reg, HFB_CTRL); return retries; } netif_dbg(priv, wol, dev, "MPD WOL-ready status set after %d msec\n", retries); clk_prepare_enable(priv->clk_wol); priv->wol_active = 1; if (hfb_enable) { bcmgenet_hfb_reg_writel(priv, hfb_enable, HFB_FLT_ENABLE_V3PLUS + 4); hfb_ctrl_reg = RBUF_HFB_EN | RBUF_ACPI_EN; bcmgenet_hfb_reg_writel(priv, hfb_ctrl_reg, HFB_CTRL); } /* Enable CRC forward */ spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); priv->crc_fwd_en = 1; reg |= CMD_CRC_FWD; /* Receiver must be enabled for WOL MP detection */ reg |= CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); spin_unlock_bh(&priv->reg_lock); reg = UMAC_IRQ_MPD_R; if (hfb_enable) reg |= UMAC_IRQ_HFB_SM | UMAC_IRQ_HFB_MM; bcmgenet_intrl2_0_writel(priv, reg, INTRL2_CPU_MASK_CLEAR); return 0; } void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv, enum bcmgenet_power_mode mode) { u32 reg; if (mode != GENET_POWER_WOL_MAGIC) { netif_err(priv, wol, priv->dev, "invalid mode: %d\n", mode); return; } if (!priv->wol_active) return; /* failed to suspend so skip the rest */ priv->wol_active = 0; clk_disable_unprepare(priv->clk_wol); priv->crc_fwd_en = 0; /* Disable Magic Packet Detection */ if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) { reg = bcmgenet_umac_readl(priv, UMAC_MPD_CTRL); if (!(reg & MPD_EN)) return; /* already reset so skip the rest */ reg &= ~(MPD_EN | MPD_PW_EN); bcmgenet_umac_writel(priv, reg, UMAC_MPD_CTRL); } /* Disable WAKE_FILTER Detection */ if (priv->wolopts & WAKE_FILTER) { reg = bcmgenet_hfb_reg_readl(priv, HFB_CTRL); if (!(reg & RBUF_ACPI_EN)) return; /* already reset so skip the rest */ reg &= ~(RBUF_HFB_EN | RBUF_ACPI_EN); bcmgenet_hfb_reg_writel(priv, reg, HFB_CTRL); } /* Disable CRC Forward */ spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); reg &= ~CMD_CRC_FWD; bcmgenet_umac_writel(priv, reg, UMAC_CMD); spin_unlock_bh(&priv->reg_lock); }
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