diff options
author | Justin Chen <justin.chen@broadcom.com> | 2023-07-14 01:18:59 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2023-07-17 09:39:04 +0300 |
commit | a2f0751206b03374f6d02f89c18a60f1bb238fea (patch) | |
tree | e64784963888621b6568e27cc12b8a667c4f8959 /drivers | |
parent | 490cb412007de593e07c1d3e2b1ec4233886707c (diff) | |
download | linux-a2f0751206b03374f6d02f89c18a60f1bb238fea.tar.xz |
net: bcmasp: Add support for WoL magic packet
Add support for Wake-On-Lan magic packet and magic packet with password.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/broadcom/asp2/bcmasp.c | 144 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/asp2/bcmasp.h | 18 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c | 36 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c | 76 |
4 files changed, 262 insertions, 12 deletions
diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp.c b/drivers/net/ethernet/broadcom/asp2/bcmasp.c index 83494641b545..894c14dca911 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp.c +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp.c @@ -436,6 +436,135 @@ void bcmasp_core_clock_set_intf(struct bcmasp_intf *intf, bool en) spin_unlock_irqrestore(&priv->clk_lock, flags); } +static irqreturn_t bcmasp_isr_wol(int irq, void *data) +{ + struct bcmasp_priv *priv = data; + u32 status; + + /* No L3 IRQ, so we good */ + if (priv->wol_irq <= 0) + goto irq_handled; + + status = wakeup_intr2_core_rl(priv, ASP_WAKEUP_INTR2_STATUS) & + ~wakeup_intr2_core_rl(priv, ASP_WAKEUP_INTR2_MASK_STATUS); + wakeup_intr2_core_wl(priv, status, ASP_WAKEUP_INTR2_CLEAR); + +irq_handled: + pm_wakeup_event(&priv->pdev->dev, 0); + return IRQ_HANDLED; +} + +static int bcmasp_get_and_request_irq(struct bcmasp_priv *priv, int i) +{ + struct platform_device *pdev = priv->pdev; + int irq, ret; + + irq = platform_get_irq_optional(pdev, i); + if (irq < 0) + return irq; + + ret = devm_request_irq(&pdev->dev, irq, bcmasp_isr_wol, 0, + pdev->name, priv); + if (ret) + return ret; + + return irq; +} + +static void bcmasp_init_wol_shared(struct bcmasp_priv *priv) +{ + struct platform_device *pdev = priv->pdev; + struct device *dev = &pdev->dev; + int irq; + + irq = bcmasp_get_and_request_irq(priv, 1); + if (irq < 0) { + dev_warn(dev, "Failed to init WoL irq: %d\n", irq); + return; + } + + priv->wol_irq = irq; + priv->wol_irq_enabled_mask = 0; + device_set_wakeup_capable(&pdev->dev, 1); +} + +static void bcmasp_enable_wol_shared(struct bcmasp_intf *intf, bool en) +{ + struct bcmasp_priv *priv = intf->parent; + struct device *dev = &priv->pdev->dev; + + if (en) { + if (priv->wol_irq_enabled_mask) { + set_bit(intf->port, &priv->wol_irq_enabled_mask); + return; + } + + /* First enable */ + set_bit(intf->port, &priv->wol_irq_enabled_mask); + enable_irq_wake(priv->wol_irq); + device_set_wakeup_enable(dev, 1); + } else { + if (!priv->wol_irq_enabled_mask) + return; + + clear_bit(intf->port, &priv->wol_irq_enabled_mask); + if (priv->wol_irq_enabled_mask) + return; + + /* Last disable */ + disable_irq_wake(priv->wol_irq); + device_set_wakeup_enable(dev, 0); + } +} + +static void bcmasp_wol_irq_destroy_shared(struct bcmasp_priv *priv) +{ + if (priv->wol_irq > 0) + free_irq(priv->wol_irq, priv); +} + +static void bcmasp_init_wol_per_intf(struct bcmasp_priv *priv) +{ + struct platform_device *pdev = priv->pdev; + struct device *dev = &pdev->dev; + struct bcmasp_intf *intf; + int irq; + + list_for_each_entry(intf, &priv->intfs, list) { + irq = bcmasp_get_and_request_irq(priv, intf->port + 1); + if (irq < 0) { + dev_warn(dev, "Failed to init WoL irq(port %d): %d\n", + intf->port, irq); + continue; + } + + intf->wol_irq = irq; + intf->wol_irq_enabled = false; + device_set_wakeup_capable(&pdev->dev, 1); + } +} + +static void bcmasp_enable_wol_per_intf(struct bcmasp_intf *intf, bool en) +{ + struct device *dev = &intf->parent->pdev->dev; + + if (en ^ intf->wol_irq_enabled) + irq_set_irq_wake(intf->wol_irq, en); + + intf->wol_irq_enabled = en; + device_set_wakeup_enable(dev, en); +} + +static void bcmasp_wol_irq_destroy_per_intf(struct bcmasp_priv *priv) +{ + struct bcmasp_intf *intf; + + list_for_each_entry(intf, &priv->intfs, list) { + if (intf->wol_irq > 0) + free_irq(intf->wol_irq, priv); + } +} + static struct bcmasp_hw_info v20_hw_info = { .rx_ctrl_flush = ASP_RX_CTRL_FLUSH, .umac2fb = UMAC2FB_OFFSET, @@ -445,6 +574,9 @@ static struct bcmasp_hw_info v20_hw_info = { }; static const struct bcmasp_plat_data v20_plat_data = { + .init_wol = bcmasp_init_wol_per_intf, + .enable_wol = bcmasp_enable_wol_per_intf, + .destroy_wol = bcmasp_wol_irq_destroy_per_intf, .hw_info = &v20_hw_info, }; @@ -458,6 +590,9 @@ static struct bcmasp_hw_info v21_hw_info = { }; static const struct bcmasp_plat_data v21_plat_data = { + .init_wol = bcmasp_init_wol_shared, + .enable_wol = bcmasp_enable_wol_shared, + .destroy_wol = bcmasp_wol_irq_destroy_shared, .hw_info = &v21_hw_info, }; @@ -521,12 +656,16 @@ static int bcmasp_probe(struct platform_device *pdev) priv->pdev = pdev; spin_lock_init(&priv->mda_lock); spin_lock_init(&priv->clk_lock); + mutex_init(&priv->wol_lock); INIT_LIST_HEAD(&priv->intfs); pdata = device_get_match_data(&pdev->dev); if (!pdata) return dev_err_probe(dev, -EINVAL, "unable to find platform data\n"); + priv->init_wol = pdata->init_wol; + priv->enable_wol = pdata->enable_wol; + priv->destroy_wol = pdata->destroy_wol; priv->hw_info = pdata->hw_info; /* Enable all clocks to ensure successful probing */ @@ -570,6 +709,9 @@ static int bcmasp_probe(struct platform_device *pdev) i++; } + /* Check and enable WoL */ + priv->init_wol(priv); + /* Drop the clock reference count now and let ndo_open()/ndo_close() * manage it for us from now on. */ @@ -585,6 +727,7 @@ static int bcmasp_probe(struct platform_device *pdev) if (ret) { netdev_err(intf->ndev, "failed to register net_device: %d\n", ret); + priv->destroy_wol(priv); bcmasp_remove_intfs(priv); goto of_put_exit; } @@ -605,6 +748,7 @@ static int bcmasp_remove(struct platform_device *pdev) if (!priv) return 0; + priv->destroy_wol(priv); bcmasp_remove_intfs(priv); return 0; diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp.h b/drivers/net/ethernet/broadcom/asp2/bcmasp.h index 4fe84d26251d..2cdf22732f4c 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp.h +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp.h @@ -301,6 +301,12 @@ struct bcmasp_intf { /* Statistics */ struct bcmasp_intf_stats64 stats64; + + u32 wolopts; + u8 sopass[SOPASS_MAX]; + /* Used if per intf wol irq */ + int wol_irq; + unsigned int wol_irq_enabled:1; }; #define NUM_MDA_FILTERS 32 @@ -321,6 +327,9 @@ struct bcmasp_hw_info { }; struct bcmasp_plat_data { + void (*init_wol)(struct bcmasp_priv *priv); + void (*enable_wol)(struct bcmasp_intf *intf, bool en); + void (*destroy_wol)(struct bcmasp_priv *priv); struct bcmasp_hw_info *hw_info; }; @@ -331,6 +340,15 @@ struct bcmasp_priv { int irq; u32 irq_mask; + /* Used if shared wol irq */ + struct mutex wol_lock; + int wol_irq; + unsigned long wol_irq_enabled_mask; + + void (*init_wol)(struct bcmasp_priv *priv); + void (*enable_wol)(struct bcmasp_intf *intf, bool en); + void (*destroy_wol)(struct bcmasp_priv *priv); + void __iomem *base; struct bcmasp_hw_info *hw_info; diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c b/drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c index 394c0e1cb026..ae24a1f74d49 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c @@ -30,6 +30,40 @@ static void bcmasp_set_msglevel(struct net_device *dev, u32 level) intf->msg_enable = level; } +#define BCMASP_SUPPORTED_WAKE (WAKE_MAGIC | WAKE_MAGICSECURE) +static void bcmasp_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct bcmasp_intf *intf = netdev_priv(dev); + + wol->supported = BCMASP_SUPPORTED_WAKE; + wol->wolopts = intf->wolopts; + memset(wol->sopass, 0, sizeof(wol->sopass)); + + if (wol->wolopts & WAKE_MAGICSECURE) + memcpy(wol->sopass, intf->sopass, sizeof(intf->sopass)); +} + +static int bcmasp_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct bcmasp_intf *intf = netdev_priv(dev); + struct bcmasp_priv *priv = intf->parent; + struct device *kdev = &priv->pdev->dev; + + if (!device_can_wakeup(kdev)) + return -EOPNOTSUPP; + + /* Interface Specific */ + intf->wolopts = wol->wolopts; + if (intf->wolopts & WAKE_MAGICSECURE) + memcpy(intf->sopass, wol->sopass, sizeof(wol->sopass)); + + mutex_lock(&priv->wol_lock); + priv->enable_wol(intf, !!intf->wolopts); + mutex_unlock(&priv->wol_lock); + + return 0; +} + const struct ethtool_ops bcmasp_ethtool_ops = { .get_drvinfo = bcmasp_get_drvinfo, .get_link = ethtool_op_get_link, @@ -37,4 +71,6 @@ const struct ethtool_ops bcmasp_ethtool_ops = { .set_link_ksettings = phy_ethtool_set_link_ksettings, .get_msglevel = bcmasp_get_msglevel, .set_msglevel = bcmasp_set_msglevel, + .get_wol = bcmasp_get_wol, + .set_wol = bcmasp_set_wol, }; diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c index 0232f5cf8909..21a8d15a47d8 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c @@ -1034,7 +1034,7 @@ static int bcmasp_netif_init(struct net_device *dev, bool phy_connect) netdev_err(dev, "could not attach to PHY\n"); goto err_phy_disable; } - } else { + } else if (!intf->wolopts) { ret = phy_resume(dev->phydev); if (ret) goto err_phy_disable; @@ -1281,8 +1281,39 @@ void bcmasp_interface_destroy(struct bcmasp_intf *intf) free_netdev(intf->ndev); } +static void bcmasp_suspend_to_wol(struct bcmasp_intf *intf) +{ + struct net_device *ndev = intf->ndev; + u32 reg; + + reg = umac_rl(intf, UMC_MPD_CTRL); + if (intf->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) + reg |= UMC_MPD_CTRL_MPD_EN; + reg &= ~UMC_MPD_CTRL_PSW_EN; + if (intf->wolopts & WAKE_MAGICSECURE) { + /* Program the SecureOn password */ + umac_wl(intf, get_unaligned_be16(&intf->sopass[0]), + UMC_PSW_MS); + umac_wl(intf, get_unaligned_be32(&intf->sopass[2]), + UMC_PSW_LS); + reg |= UMC_MPD_CTRL_PSW_EN; + } + umac_wl(intf, reg, UMC_MPD_CTRL); + + /* UniMAC receive needs to be turned on */ + umac_enable_set(intf, UMC_CMD_RX_EN, 1); + + if (intf->parent->wol_irq > 0) { + wakeup_intr2_core_wl(intf->parent, 0xffffffff, + ASP_WAKEUP_INTR2_MASK_CLEAR); + } + + netif_dbg(intf, wol, ndev, "entered WOL mode\n"); +} + int bcmasp_interface_suspend(struct bcmasp_intf *intf) { + struct device *kdev = &intf->parent->pdev->dev; struct net_device *dev = intf->ndev; int ret = 0; @@ -1293,19 +1324,24 @@ int bcmasp_interface_suspend(struct bcmasp_intf *intf) bcmasp_netif_deinit(dev); - ret = phy_suspend(dev->phydev); - if (ret) - goto out; + if (!intf->wolopts) { + ret = phy_suspend(dev->phydev); + if (ret) + goto out; - if (intf->internal_phy) - bcmasp_ephy_enable_set(intf, false); - else - bcmasp_rgmii_mode_en_set(intf, false); + if (intf->internal_phy) + bcmasp_ephy_enable_set(intf, false); + else + bcmasp_rgmii_mode_en_set(intf, false); - /* If Wake-on-LAN is disabled, we can safely - * disable the network interface clocks. - */ - bcmasp_core_clock_set_intf(intf, false); + /* If Wake-on-LAN is disabled, we can safely + * disable the network interface clocks. + */ + bcmasp_core_clock_set_intf(intf, false); + } + + if (device_may_wakeup(kdev) && intf->wolopts) + bcmasp_suspend_to_wol(intf); clk_disable_unprepare(intf->parent->clk); @@ -1316,6 +1352,20 @@ out: return ret; } +static void bcmasp_resume_from_wol(struct bcmasp_intf *intf) +{ + u32 reg; + + reg = umac_rl(intf, UMC_MPD_CTRL); + reg &= ~UMC_MPD_CTRL_MPD_EN; + umac_wl(intf, reg, UMC_MPD_CTRL); + + if (intf->parent->wol_irq > 0) { + wakeup_intr2_core_wl(intf->parent, 0xffffffff, + ASP_WAKEUP_INTR2_MASK_SET); + } +} + int bcmasp_interface_resume(struct bcmasp_intf *intf) { struct net_device *dev = intf->ndev; @@ -1332,6 +1382,8 @@ int bcmasp_interface_resume(struct bcmasp_intf *intf) if (ret) goto out; + bcmasp_resume_from_wol(intf); + netif_device_attach(dev); return 0; |