Commit a2f07512 authored by Justin Chen's avatar Justin Chen Committed by David S. Miller

net: bcmasp: Add support for WoL magic packet

Add support for Wake-On-Lan magic packet and magic packet with password.
Signed-off-by: default avatarJustin Chen <justin.chen@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 490cb412
......@@ -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;
......
......@@ -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;
......
......@@ -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,
};
......@@ -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 @@ int bcmasp_interface_suspend(struct bcmasp_intf *intf)
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;
......
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