@@ -81,7 +81,8 @@ static int ksz9477_handle_wake_reason(struct ksz_device *dev, int port)
if (!pme_status)
return 0;
- dev_dbg(dev->dev, "Wake event on port %d due to:%s%s\n", port,
+ dev_dbg(dev->dev, "Wake event on port %d due to:%s%s%s\n", port,
+ pme_status & PME_WOL_MAGICPKT ? " \"Magic Packet\"" : "",
pme_status & PME_WOL_LINKUP ? " \"Link Up\"" : "",
pme_status & PME_WOL_ENERGY ? " \"Enery detect\"" : "");
@@ -109,10 +110,19 @@ void ksz9477_get_wol(struct ksz_device *dev, int port,
wol->supported = WAKE_PHY;
+ /* Check if the current MAC address on this port can be set
+ * as global for WAKE_MAGIC support. The result may vary
+ * dynamically based on other ports configurations.
+ */
+ if (ksz_is_port_mac_global_usable(dev->ds, port))
+ wol->supported |= WAKE_MAGIC;
+
ret = ksz_pread8(dev, port, REG_PORT_PME_CTRL, &pme_ctrl);
if (ret)
return;
+ if (pme_ctrl & PME_WOL_MAGICPKT)
+ wol->wolopts |= WAKE_MAGIC;
if (pme_ctrl & (PME_WOL_LINKUP | PME_WOL_ENERGY))
wol->wolopts |= WAKE_PHY;
}
@@ -134,10 +144,12 @@ void ksz9477_get_wol(struct ksz_device *dev, int port,
int ksz9477_set_wol(struct ksz_device *dev, int port,
struct ethtool_wolinfo *wol)
{
- u8 pme_ctrl = 0;
+ u8 pme_ctrl = 0, pme_ctrl_old = 0;
+ bool magic_switched_off;
+ bool magic_switched_on;
int ret;
- if (wol->wolopts & ~WAKE_PHY)
+ if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
return -EINVAL;
if (!dev->wakeup_source)
@@ -147,10 +159,42 @@ int ksz9477_set_wol(struct ksz_device *dev, int port,
if (ret)
return ret;
+ if (wol->wolopts & WAKE_MAGIC)
+ pme_ctrl |= PME_WOL_MAGICPKT;
if (wol->wolopts & WAKE_PHY)
pme_ctrl |= PME_WOL_LINKUP | PME_WOL_ENERGY;
- return ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, pme_ctrl);
+ ret = ksz_pread8(dev, port, REG_PORT_PME_CTRL, &pme_ctrl_old);
+ if (ret)
+ return ret;
+
+ if (pme_ctrl_old == pme_ctrl)
+ return 0;
+
+ magic_switched_off = (pme_ctrl_old & PME_WOL_MAGICPKT) &&
+ !(pme_ctrl & PME_WOL_MAGICPKT);
+ magic_switched_on = !(pme_ctrl_old & PME_WOL_MAGICPKT) &&
+ (pme_ctrl & PME_WOL_MAGICPKT);
+
+ /* To keep reference count of MAC address, we should do this
+ * operation only on change of WOL settings.
+ */
+ if (magic_switched_on) {
+ ret = ksz_switch_macaddr_get(dev->ds, port, NULL);
+ if (ret)
+ return ret;
+ } else if (magic_switched_off) {
+ ksz_switch_macaddr_put(dev->ds);
+ }
+
+ ret = ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, pme_ctrl);
+ if (ret) {
+ if (magic_switched_on)
+ ksz_switch_macaddr_put(dev->ds);
+ return ret;
+ }
+
+ return 0;
}
static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev)
@@ -1106,6 +1150,11 @@ void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port)
/* clear pending wake flags */
ksz9477_handle_wake_reason(dev, port);
+
+ /* Disable all WoL options by default. Otherwise
+ * ksz_switch_macaddr_get/put logic will not work properly.
+ */
+ ksz_pwrite8(dev, port, REG_PORT_PME_CTRL, 0);
}
void ksz9477_config_cpu_port(struct dsa_switch *ds)
@@ -3569,6 +3569,7 @@ static int ksz_port_set_mac_address(struct dsa_switch *ds, int port,
const unsigned char *addr)
{
struct dsa_port *dp = dsa_to_port(ds, port);
+ struct ethtool_wolinfo wol;
if (dp->hsr_dev) {
dev_err(ds->dev,
@@ -3577,9 +3578,45 @@ static int ksz_port_set_mac_address(struct dsa_switch *ds, int port,
return -EBUSY;
}
+ ksz_get_wol(ds, dp->index, &wol);
+ if (wol.wolopts & WAKE_MAGIC) {
+ dev_err(ds->dev,
+ "Cannot change MAC address on port %d with active Wake on Magic Packet\n",
+ port);
+ return -EBUSY;
+ }
+
return 0;
}
+/**
+ * ksz_is_port_mac_global_usable - Check if the MAC address on a given port
+ * can be used as a global address.
+ * @ds: Pointer to the DSA switch structure.
+ * @port: The port number on which the MAC address is to be checked.
+ *
+ * This function examines the MAC address set on the specified port and
+ * determines if it can be used as a global address for the switch.
+ *
+ * Return: true if the port's MAC address can be used as a global address, false
+ * otherwise.
+ */
+bool ksz_is_port_mac_global_usable(struct dsa_switch *ds, int port)
+{
+ struct net_device *user = dsa_to_port(ds, port)->user;
+ const unsigned char *addr = user->dev_addr;
+ struct ksz_switch_macaddr *switch_macaddr;
+ struct ksz_device *dev = ds->priv;
+
+ ASSERT_RTNL();
+
+ switch_macaddr = dev->switch_macaddr;
+ if (switch_macaddr && !ether_addr_equal(switch_macaddr->addr, addr))
+ return false;
+
+ return true;
+}
+
/* Program the switch's MAC address register with the MAC address of the
* requesting user port. This single address is used by the switch for multiple
* features, like HSR self-address filtering and WoL. Other user ports are
@@ -3587,8 +3624,8 @@ static int ksz_port_set_mac_address(struct dsa_switch *ds, int port,
* the same. The user ports' MAC addresses must not change while they have
* ownership of the switch MAC address.
*/
-static int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
- struct netlink_ext_ack *extack)
+int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
+ struct netlink_ext_ack *extack)
{
struct net_device *user = dsa_to_port(ds, port)->user;
const unsigned char *addr = user->dev_addr;
@@ -3628,7 +3665,7 @@ static int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
return 0;
}
-static void ksz_switch_macaddr_put(struct dsa_switch *ds)
+void ksz_switch_macaddr_put(struct dsa_switch *ds)
{
struct ksz_switch_macaddr *switch_macaddr;
struct ksz_device *dev = ds->priv;
@@ -390,12 +390,16 @@ int ksz_switch_register(struct ksz_device *dev);
void ksz_switch_remove(struct ksz_device *dev);
void ksz_init_mib_timer(struct ksz_device *dev);
+bool ksz_is_port_mac_global_usable(struct dsa_switch *ds, int port);
void ksz_r_mib_stats64(struct ksz_device *dev, int port);
void ksz88xx_r_mib_stats64(struct ksz_device *dev, int port);
void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
bool ksz_get_gbit(struct ksz_device *dev, int port);
phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit);
extern const struct ksz_chip_data ksz_switch_chips[];
+int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
+ struct netlink_ext_ack *extack);
+void ksz_switch_macaddr_put(struct dsa_switch *ds);
/* Common register access functions */
static inline struct regmap *ksz_regmap_8(struct ksz_device *dev)