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-rw-r--r--drivers/net/phy/bcm-phy-lib.c212
-rw-r--r--drivers/net/phy/bcm-phy-lib.h5
-rw-r--r--drivers/net/phy/broadcom.c126
-rw-r--r--include/linux/brcmphy.h55
4 files changed, 395 insertions, 3 deletions
diff --git a/drivers/net/phy/bcm-phy-lib.c b/drivers/net/phy/bcm-phy-lib.c
index b2c0baa51f39..27c57f6ab211 100644
--- a/drivers/net/phy/bcm-phy-lib.c
+++ b/drivers/net/phy/bcm-phy-lib.c
@@ -6,12 +6,14 @@
#include "bcm-phy-lib.h"
#include <linux/bitfield.h>
#include <linux/brcmphy.h>
+#include <linux/etherdevice.h>
#include <linux/export.h>
#include <linux/mdio.h>
#include <linux/module.h>
#include <linux/phy.h>
#include <linux/ethtool.h>
#include <linux/ethtool_netlink.h>
+#include <linux/netdevice.h>
#define MII_BCM_CHANNEL_WIDTH 0x2000
#define BCM_CL45VEN_EEE_ADV 0x3c
@@ -816,6 +818,216 @@ int bcm_phy_cable_test_get_status_rdb(struct phy_device *phydev,
}
EXPORT_SYMBOL_GPL(bcm_phy_cable_test_get_status_rdb);
+#define BCM54XX_WOL_SUPPORTED_MASK (WAKE_UCAST | \
+ WAKE_MCAST | \
+ WAKE_BCAST | \
+ WAKE_MAGIC | \
+ WAKE_MAGICSECURE)
+
+int bcm_phy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
+{
+ struct net_device *ndev = phydev->attached_dev;
+ u8 da[ETH_ALEN], mask[ETH_ALEN];
+ unsigned int i;
+ u16 ctl;
+ int ret;
+
+ /* Allow a MAC driver to play through its own Wake-on-LAN
+ * implementation
+ */
+ if (wol->wolopts & ~BCM54XX_WOL_SUPPORTED_MASK)
+ return -EOPNOTSUPP;
+
+ /* The PHY supports passwords of 4, 6 and 8 bytes in size, but Linux's
+ * ethtool only supports 6, for now.
+ */
+ BUILD_BUG_ON(sizeof(wol->sopass) != ETH_ALEN);
+
+ /* Clear previous interrupts */
+ ret = bcm_phy_read_exp(phydev, BCM54XX_WOL_INT_STATUS);
+ if (ret < 0)
+ return ret;
+
+ ret = bcm_phy_read_exp(phydev, BCM54XX_WOL_MAIN_CTL);
+ if (ret < 0)
+ return ret;
+
+ ctl = ret;
+
+ if (!wol->wolopts) {
+ if (phy_interrupt_is_valid(phydev))
+ disable_irq_wake(phydev->irq);
+
+ /* Leave all interrupts disabled */
+ ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_INT_MASK,
+ BCM54XX_WOL_ALL_INTRS);
+ if (ret < 0)
+ return ret;
+
+ /* Disable the global Wake-on-LAN enable bit */
+ ctl &= ~BCM54XX_WOL_EN;
+
+ return bcm_phy_write_exp(phydev, BCM54XX_WOL_MAIN_CTL, ctl);
+ }
+
+ /* Clear the previously configured mode and mask mode for Wake-on-LAN */
+ ctl &= ~(BCM54XX_WOL_MODE_MASK << BCM54XX_WOL_MODE_SHIFT);
+ ctl &= ~(BCM54XX_WOL_MASK_MODE_MASK << BCM54XX_WOL_MASK_MODE_SHIFT);
+ ctl &= ~BCM54XX_WOL_DIR_PKT_EN;
+ ctl &= ~(BCM54XX_WOL_SECKEY_OPT_MASK << BCM54XX_WOL_SECKEY_OPT_SHIFT);
+
+ /* When using WAKE_MAGIC, we program the magic pattern filter to match
+ * the device's MAC address and we accept any MAC DA in the Ethernet
+ * frame.
+ *
+ * When using WAKE_UCAST, WAKE_BCAST or WAKE_MCAST, we program the
+ * following:
+ * - WAKE_UCAST -> MAC DA is the device's MAC with a perfect match
+ * - WAKE_MCAST -> MAC DA is X1:XX:XX:XX:XX:XX where XX is don't care
+ * - WAKE_BCAST -> MAC DA is FF:FF:FF:FF:FF:FF with a perfect match
+ *
+ * Note that the Broadcast MAC DA is inherently going to match the
+ * multicast pattern being matched.
+ */
+ memset(mask, 0, sizeof(mask));
+
+ if (wol->wolopts & WAKE_MCAST) {
+ memset(da, 0, sizeof(da));
+ memset(mask, 0xff, sizeof(mask));
+ da[0] = 0x01;
+ mask[0] = ~da[0];
+ } else {
+ if (wol->wolopts & WAKE_UCAST) {
+ ether_addr_copy(da, ndev->dev_addr);
+ } else if (wol->wolopts & WAKE_BCAST) {
+ eth_broadcast_addr(da);
+ } else if (wol->wolopts & WAKE_MAGICSECURE) {
+ ether_addr_copy(da, wol->sopass);
+ } else if (wol->wolopts & WAKE_MAGIC) {
+ memset(da, 0, sizeof(da));
+ memset(mask, 0xff, sizeof(mask));
+ }
+ }
+
+ for (i = 0; i < ETH_ALEN / 2; i++) {
+ if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {
+ ret = bcm_phy_write_exp(phydev,
+ BCM54XX_WOL_MPD_DATA1(2 - i),
+ ndev->dev_addr[i * 2] << 8 |
+ ndev->dev_addr[i * 2 + 1]);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_MPD_DATA2(2 - i),
+ da[i * 2] << 8 | da[i * 2 + 1]);
+ if (ret < 0)
+ return ret;
+
+ ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_MASK(2 - i),
+ mask[i * 2] << 8 | mask[i * 2 + 1]);
+ if (ret)
+ return ret;
+ }
+
+ if (wol->wolopts & WAKE_MAGICSECURE) {
+ ctl |= BCM54XX_WOL_SECKEY_OPT_6B <<
+ BCM54XX_WOL_SECKEY_OPT_SHIFT;
+ ctl |= BCM54XX_WOL_MODE_SINGLE_MPDSEC << BCM54XX_WOL_MODE_SHIFT;
+ ctl |= BCM54XX_WOL_MASK_MODE_DA_FF <<
+ BCM54XX_WOL_MASK_MODE_SHIFT;
+ } else {
+ if (wol->wolopts & WAKE_MAGIC)
+ ctl |= BCM54XX_WOL_MODE_SINGLE_MPD;
+ else
+ ctl |= BCM54XX_WOL_DIR_PKT_EN;
+ ctl |= BCM54XX_WOL_MASK_MODE_DA_ONLY <<
+ BCM54XX_WOL_MASK_MODE_SHIFT;
+ }
+
+ /* Globally enable Wake-on-LAN */
+ ctl |= BCM54XX_WOL_EN | BCM54XX_WOL_CRC_CHK;
+
+ ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_MAIN_CTL, ctl);
+ if (ret < 0)
+ return ret;
+
+ /* Enable WOL interrupt on LED4 */
+ ret = bcm_phy_read_exp(phydev, BCM54XX_TOP_MISC_LED_CTL);
+ if (ret < 0)
+ return ret;
+
+ ret |= BCM54XX_LED4_SEL_INTR;
+ ret = bcm_phy_write_exp(phydev, BCM54XX_TOP_MISC_LED_CTL, ret);
+ if (ret < 0)
+ return ret;
+
+ /* Enable all Wake-on-LAN interrupt sources */
+ ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_INT_MASK, 0);
+ if (ret < 0)
+ return ret;
+
+ if (phy_interrupt_is_valid(phydev))
+ enable_irq_wake(phydev->irq);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(bcm_phy_set_wol);
+
+void bcm_phy_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
+{
+ struct net_device *ndev = phydev->attached_dev;
+ u8 da[ETH_ALEN];
+ unsigned int i;
+ int ret;
+ u16 ctl;
+
+ wol->supported = BCM54XX_WOL_SUPPORTED_MASK;
+ wol->wolopts = 0;
+
+ ret = bcm_phy_read_exp(phydev, BCM54XX_WOL_MAIN_CTL);
+ if (ret < 0)
+ return;
+
+ ctl = ret;
+
+ if (!(ctl & BCM54XX_WOL_EN))
+ return;
+
+ for (i = 0; i < sizeof(da) / 2; i++) {
+ ret = bcm_phy_read_exp(phydev,
+ BCM54XX_WOL_MPD_DATA2(2 - i));
+ if (ret < 0)
+ return;
+
+ da[i * 2] = ret >> 8;
+ da[i * 2 + 1] = ret & 0xff;
+ }
+
+ if (ctl & BCM54XX_WOL_DIR_PKT_EN) {
+ if (is_broadcast_ether_addr(da))
+ wol->wolopts |= WAKE_BCAST;
+ else if (is_multicast_ether_addr(da))
+ wol->wolopts |= WAKE_MCAST;
+ else if (ether_addr_equal(da, ndev->dev_addr))
+ wol->wolopts |= WAKE_UCAST;
+ } else {
+ ctl = (ctl >> BCM54XX_WOL_MODE_SHIFT) & BCM54XX_WOL_MODE_MASK;
+ switch (ctl) {
+ case BCM54XX_WOL_MODE_SINGLE_MPD:
+ wol->wolopts |= WAKE_MAGIC;
+ break;
+ case BCM54XX_WOL_MODE_SINGLE_MPDSEC:
+ wol->wolopts |= WAKE_MAGICSECURE;
+ memcpy(wol->sopass, da, sizeof(da));
+ break;
+ default:
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(bcm_phy_get_wol);
+
MODULE_DESCRIPTION("Broadcom PHY Library");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Broadcom Corporation");
diff --git a/drivers/net/phy/bcm-phy-lib.h b/drivers/net/phy/bcm-phy-lib.h
index 729db441797a..c6fed43ec913 100644
--- a/drivers/net/phy/bcm-phy-lib.h
+++ b/drivers/net/phy/bcm-phy-lib.h
@@ -9,6 +9,8 @@
#include <linux/brcmphy.h>
#include <linux/phy.h>
+struct ethtool_wolinfo;
+
/* 28nm only register definitions */
#define MISC_ADDR(base, channel) base, channel
@@ -111,4 +113,7 @@ static inline void bcm_ptp_stop(struct bcm_ptp_private *priv)
}
#endif
+int bcm_phy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
+void bcm_phy_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol);
+
#endif /* _LINUX_BCM_PHY_LIB_H */
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index ad71c88c87e7..418e6bc0e998 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -14,8 +14,12 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/phy.h>
+#include <linux/pm_wakeup.h>
#include <linux/brcmphy.h>
#include <linux/of.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/gpio/consumer.h>
#define BRCM_PHY_MODEL(phydev) \
((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
@@ -30,8 +34,17 @@ MODULE_LICENSE("GPL");
struct bcm54xx_phy_priv {
u64 *stats;
struct bcm_ptp_private *ptp;
+ int wake_irq;
+ bool wake_irq_enabled;
};
+static bool bcm54xx_phy_can_wakeup(struct phy_device *phydev)
+{
+ struct bcm54xx_phy_priv *priv = phydev->priv;
+
+ return phy_interrupt_is_valid(phydev) || priv->wake_irq >= 0;
+}
+
static int bcm54xx_config_clock_delay(struct phy_device *phydev)
{
int rc, val;
@@ -413,6 +426,16 @@ static int bcm54xx_config_init(struct phy_device *phydev)
bcm54xx_ptp_config_init(phydev);
+ /* Acknowledge any left over interrupt and charge the device for
+ * wake-up.
+ */
+ err = bcm_phy_read_exp(phydev, BCM54XX_WOL_INT_STATUS);
+ if (err < 0)
+ return err;
+
+ if (err)
+ pm_wakeup_event(&phydev->mdio.dev, 0);
+
return 0;
}
@@ -437,12 +460,39 @@ out:
return ret;
}
+static int bcm54xx_set_wakeup_irq(struct phy_device *phydev, bool state)
+{
+ struct bcm54xx_phy_priv *priv = phydev->priv;
+ int ret = 0;
+
+ if (!bcm54xx_phy_can_wakeup(phydev))
+ return ret;
+
+ if (priv->wake_irq_enabled != state) {
+ if (state)
+ ret = enable_irq_wake(priv->wake_irq);
+ else
+ ret = disable_irq_wake(priv->wake_irq);
+ priv->wake_irq_enabled = state;
+ }
+
+ return ret;
+}
+
static int bcm54xx_suspend(struct phy_device *phydev)
{
- int ret;
+ int ret = 0;
bcm54xx_ptp_stop(phydev);
+ /* Acknowledge any Wake-on-LAN interrupt prior to suspend */
+ ret = bcm_phy_read_exp(phydev, BCM54XX_WOL_INT_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (phydev->wol_enabled)
+ return bcm54xx_set_wakeup_irq(phydev, true);
+
/* We cannot use a read/modify/write here otherwise the PHY gets into
* a bad state where its LEDs keep flashing, thus defeating the purpose
* of low power mode.
@@ -456,7 +506,13 @@ static int bcm54xx_suspend(struct phy_device *phydev)
static int bcm54xx_resume(struct phy_device *phydev)
{
- int ret;
+ int ret = 0;
+
+ if (phydev->wol_enabled) {
+ ret = bcm54xx_set_wakeup_irq(phydev, false);
+ if (ret)
+ return ret;
+ }
ret = bcm54xx_iddq_set(phydev, false);
if (ret < 0)
@@ -801,14 +857,54 @@ static int brcm_fet_suspend(struct phy_device *phydev)
return err;
}
+static void bcm54xx_phy_get_wol(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ /* We cannot wake-up if we do not have a dedicated PHY interrupt line
+ * or an out of band GPIO descriptor for wake-up. Zeroing
+ * wol->supported allows the caller (MAC driver) to play through and
+ * offer its own Wake-on-LAN scheme if available.
+ */
+ if (!bcm54xx_phy_can_wakeup(phydev)) {
+ wol->supported = 0;
+ return;
+ }
+
+ bcm_phy_get_wol(phydev, wol);
+}
+
+static int bcm54xx_phy_set_wol(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ int ret;
+
+ /* We cannot wake-up if we do not have a dedicated PHY interrupt line
+ * or an out of band GPIO descriptor for wake-up. Returning -EOPNOTSUPP
+ * allows the caller (MAC driver) to play through and offer its own
+ * Wake-on-LAN scheme if available.
+ */
+ if (!bcm54xx_phy_can_wakeup(phydev))
+ return -EOPNOTSUPP;
+
+ ret = bcm_phy_set_wol(phydev, wol);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static int bcm54xx_phy_probe(struct phy_device *phydev)
{
struct bcm54xx_phy_priv *priv;
+ struct gpio_desc *wakeup_gpio;
+ int ret = 0;
priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
+ priv->wake_irq = -ENXIO;
+
phydev->priv = priv;
priv->stats = devm_kcalloc(&phydev->mdio.dev,
@@ -821,7 +917,28 @@ static int bcm54xx_phy_probe(struct phy_device *phydev)
if (IS_ERR(priv->ptp))
return PTR_ERR(priv->ptp);
- return 0;
+ /* We cannot utilize the _optional variant here since we want to know
+ * whether the GPIO descriptor exists or not to advertise Wake-on-LAN
+ * support or not.
+ */
+ wakeup_gpio = devm_gpiod_get(&phydev->mdio.dev, "wakeup", GPIOD_IN);
+ if (PTR_ERR(wakeup_gpio) == -EPROBE_DEFER)
+ return PTR_ERR(wakeup_gpio);
+
+ if (!IS_ERR(wakeup_gpio)) {
+ priv->wake_irq = gpiod_to_irq(wakeup_gpio);
+ ret = irq_set_irq_type(priv->wake_irq, IRQ_TYPE_LEVEL_LOW);
+ if (ret)
+ return ret;
+ }
+
+ /* If we do not have a main interrupt or a side-band wake-up interrupt,
+ * then the device cannot be marked as wake-up capable.
+ */
+ if (!bcm54xx_phy_can_wakeup(phydev))
+ return 0;
+
+ return device_init_wakeup(&phydev->mdio.dev, true);
}
static void bcm54xx_get_stats(struct phy_device *phydev,
@@ -894,6 +1011,7 @@ static struct phy_driver broadcom_drivers[] = {
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54210E",
/* PHY_GBIT_FEATURES */
+ .flags = PHY_ALWAYS_CALL_SUSPEND,
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
@@ -904,6 +1022,8 @@ static struct phy_driver broadcom_drivers[] = {
.link_change_notify = bcm54xx_link_change_notify,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
+ .get_wol = bcm54xx_phy_get_wol,
+ .set_wol = bcm54xx_phy_set_wol,
}, {
.phy_id = PHY_ID_BCM5461,
.phy_id_mask = 0xfffffff0,
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index 9e77165f3ef6..e9afbfb6d7a5 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -89,6 +89,7 @@
#define MII_BCM54XX_EXP_SEL 0x17 /* Expansion register select */
#define MII_BCM54XX_EXP_SEL_TOP 0x0d00 /* TOP_MISC expansion register select */
#define MII_BCM54XX_EXP_SEL_SSD 0x0e00 /* Secondary SerDes select */
+#define MII_BCM54XX_EXP_SEL_WOL 0x0e00 /* Wake-on-LAN expansion select register */
#define MII_BCM54XX_EXP_SEL_ER 0x0f00 /* Expansion register select */
#define MII_BCM54XX_EXP_SEL_ETC 0x0d00 /* Expansion register spare + 2k mem */
@@ -253,6 +254,9 @@
#define BCM54XX_TOP_MISC_IDDQ_SD (1 << 2)
#define BCM54XX_TOP_MISC_IDDQ_SR (1 << 3)
+#define BCM54XX_TOP_MISC_LED_CTL (MII_BCM54XX_EXP_SEL_TOP + 0x0C)
+#define BCM54XX_LED4_SEL_INTR BIT(1)
+
/*
* BCM5482: Secondary SerDes registers
*/
@@ -272,6 +276,57 @@
#define BCM54612E_EXP_SPARE0 (MII_BCM54XX_EXP_SEL_ETC + 0x34)
#define BCM54612E_LED4_CLK125OUT_EN (1 << 1)
+
+/* Wake-on-LAN registers */
+#define BCM54XX_WOL_MAIN_CTL (MII_BCM54XX_EXP_SEL_WOL + 0x80)
+#define BCM54XX_WOL_EN BIT(0)
+#define BCM54XX_WOL_MODE_SINGLE_MPD 0
+#define BCM54XX_WOL_MODE_SINGLE_MPDSEC 1
+#define BCM54XX_WOL_MODE_DUAL 2
+#define BCM54XX_WOL_MODE_SHIFT 1
+#define BCM54XX_WOL_MODE_MASK 0x3
+#define BCM54XX_WOL_MP_MSB_FF_EN BIT(3)
+#define BCM54XX_WOL_SECKEY_OPT_4B 0
+#define BCM54XX_WOL_SECKEY_OPT_6B 1
+#define BCM54XX_WOL_SECKEY_OPT_8B 2
+#define BCM54XX_WOL_SECKEY_OPT_SHIFT 4
+#define BCM54XX_WOL_SECKEY_OPT_MASK 0x3
+#define BCM54XX_WOL_L2_TYPE_CHK BIT(6)
+#define BCM54XX_WOL_L4IPV4UDP_CHK BIT(7)
+#define BCM54XX_WOL_L4IPV6UDP_CHK BIT(8)
+#define BCM54XX_WOL_UDPPORT_CHK BIT(9)
+#define BCM54XX_WOL_CRC_CHK BIT(10)
+#define BCM54XX_WOL_SECKEY_MODE BIT(11)
+#define BCM54XX_WOL_RST BIT(12)
+#define BCM54XX_WOL_DIR_PKT_EN BIT(13)
+#define BCM54XX_WOL_MASK_MODE_DA_FF 0
+#define BCM54XX_WOL_MASK_MODE_DA_MPD 1
+#define BCM54XX_WOL_MASK_MODE_DA_ONLY 2
+#define BCM54XX_WOL_MASK_MODE_MPD 3
+#define BCM54XX_WOL_MASK_MODE_SHIFT 14
+#define BCM54XX_WOL_MASK_MODE_MASK 0x3
+
+#define BCM54XX_WOL_INNER_PROTO (MII_BCM54XX_EXP_SEL_WOL + 0x81)
+#define BCM54XX_WOL_OUTER_PROTO (MII_BCM54XX_EXP_SEL_WOL + 0x82)
+#define BCM54XX_WOL_OUTER_PROTO2 (MII_BCM54XX_EXP_SEL_WOL + 0x83)
+
+#define BCM54XX_WOL_MPD_DATA1(x) (MII_BCM54XX_EXP_SEL_WOL + 0x84 + (x))
+#define BCM54XX_WOL_MPD_DATA2(x) (MII_BCM54XX_EXP_SEL_WOL + 0x87 + (x))
+#define BCM54XX_WOL_SEC_KEY_8B (MII_BCM54XX_EXP_SEL_WOL + 0x8A)
+#define BCM54XX_WOL_MASK(x) (MII_BCM54XX_EXP_SEL_WOL + 0x8B + (x))
+#define BCM54XX_SEC_KEY_STORE(x) (MII_BCM54XX_EXP_SEL_WOL + 0x8E)
+#define BCM54XX_WOL_SHARED_CNT (MII_BCM54XX_EXP_SEL_WOL + 0x92)
+
+#define BCM54XX_WOL_INT_MASK (MII_BCM54XX_EXP_SEL_WOL + 0x93)
+#define BCM54XX_WOL_PKT1 BIT(0)
+#define BCM54XX_WOL_PKT2 BIT(1)
+#define BCM54XX_WOL_DIR BIT(2)
+#define BCM54XX_WOL_ALL_INTRS (BCM54XX_WOL_PKT1 | \
+ BCM54XX_WOL_PKT2 | \
+ BCM54XX_WOL_DIR)
+
+#define BCM54XX_WOL_INT_STATUS (MII_BCM54XX_EXP_SEL_WOL + 0x94)
+
/*****************************************************************************/
/* Fast Ethernet Transceiver definitions. */
/*****************************************************************************/
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-19 17:09:59 +0000