net: dsa: Fixes and enhancements

index ce90c8b..2dab270 100644
@@ -63,8 +63,6 @@ static netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev)
 		dsa_header[3] = 0x00;
 	}
 
-	skb->protocol = htons(ETH_P_DSA);
-
 	skb->dev = p->parent->dst->master_netdev;
 	dev_queue_xmit(skb);
 

index 94fcce7..9aeda59 100644
@@ -76,8 +76,6 @@ static netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev)
 		edsa_header[7] = 0x00;
 	}
 
-	skb->protocol = htons(ETH_P_EDSA);
-
 	skb->dev = p->parent->dst->master_netdev;
 	dev_queue_xmit(skb);
 

index 115fdca..e268f9d 100644
@@ -57,8 +57,6 @@ static netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev)
 	trailer[2] = 0x10;
 	trailer[3] = 0x00;
 
-	nskb->protocol = htons(ETH_P_TRAILER);
-
 	nskb->dev = p->parent->dst->master_netdev;
 	dev_queue_xmit(nskb);
 

index 05b0ca3..c29aebe 100644
@@ -69,8 +69,11 @@ static char *mv88e6060_probe(struct device *host_dev, int sw_addr)
 
 	ret = mdiobus_read(bus, sw_addr + REG_PORT(0), 0x03);
 	if (ret >= 0) {
-		ret &= 0xfff0;
 		if (ret == 0x0600)
+			return "Marvell 88E6060 (A0)";
+		if (ret == 0x0601 || ret == 0x0602)
+			return "Marvell 88E6060 (B0)";
+		if ((ret & 0xfff0) == 0x0600)
 			return "Marvell 88E6060";
 	}
 

index 244c735..1230f52 100644
@@ -21,6 +21,7 @@
 #define ID_6085		0x04a0
 #define ID_6095		0x0950
 #define ID_6131		0x1060
+#define ID_6131_B2	0x1066
 
 static char *mv88e6131_probe(struct device *host_dev, int sw_addr)
 {

@@ -32,12 +33,15 @@ static char *mv88e6131_probe(struct device *host_dev, int sw_addr)
 
 	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
 	if (ret >= 0) {
-		ret &= 0xfff0;
-		if (ret == ID_6085)
+		int ret_masked = ret & 0xfff0;
+
+		if (ret_masked == ID_6085)
 			return "Marvell 88E6085";
-		if (ret == ID_6095)
+		if (ret_masked == ID_6095)
 			return "Marvell 88E6095/88E6095F";
-		if (ret == ID_6131)
+		if (ret == ID_6131_B2)
+			return "Marvell 88E6131 (B2)";
+		if (ret_masked == ID_6131)
 			return "Marvell 88E6131";
 	}
 

464 lines not on this page · raw message

index a6c90cf..8e1090b 100644
@@ -507,6 +507,9 @@ static int __init mv88e6xxx_init(void)
 #if IS_ENABLED(CONFIG_NET_DSA_MV88E6123_61_65)
 	register_switch_driver(&mv88e6123_61_65_switch_driver);
 #endif
+#if IS_ENABLED(CONFIG_NET_DSA_MV88E6352)
+	register_switch_driver(&mv88e6352_switch_driver);
+#endif
 #if IS_ENABLED(CONFIG_NET_DSA_MV88E6171)
 	register_switch_driver(&mv88e6171_switch_driver);
 #endif

index 5e5145a..c0ce133 100644
@@ -37,6 +37,12 @@ struct mv88e6xxx_priv_state {
 	 */
 	struct mutex	stats_mutex;
 
+	/* This mutex serializes phy access for chips with
+	 * indirect phy addressing. It is unused for chips
+	 * with direct phy access.
+	 */
+	struct mutex	phy_mutex;
+
 	int		id; /* switch product id */
 };
 

@@ -70,6 +76,7 @@ void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
 
 extern struct dsa_switch_driver mv88e6131_switch_driver;
 extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;
+extern struct dsa_switch_driver mv88e6352_switch_driver;
 extern struct dsa_switch_driver mv88e6171_switch_driver;
 
 #define REG_READ(addr, reg)						\

index 43a5826..f17364f 100644
@@ -73,6 +73,8 @@ static char *mv88e6352_probe(struct device *host_dev, int sw_addr)
 
 	ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
 	if (ret >= 0) {
+		if ((ret & 0xfff0) == 0x1760)
+			return "Marvell 88E6176";
 		if (ret == 0x3521)
 			return "Marvell 88E6352 (A0)";
 		if (ret == 0x3522)

index b765592..55e75e7 100644
@@ -139,6 +139,14 @@ struct dsa_switch {
 	 */
 	struct device		*master_dev;
 
+#ifdef CONFIG_NET_DSA_HWMON
+	/*
+	 * Hardware monitoring information
+	 */
+	char			hwmon_name[IFNAMSIZ + 8];
+	struct device		*hwmon_dev;
+#endif
+
 	/*
 	 * Slave mii_bus and devices for the individual ports.
 	 */

@@ -242,6 +250,14 @@ struct dsa_switch_driver {
 			   struct ethtool_eee *e);
 	int	(*get_eee)(struct dsa_switch *ds, int port,
 			   struct ethtool_eee *e);
+
+#ifdef CONFIG_NET_DSA_HWMON
+	/* Hardware monitoring */
+	int	(*get_temp)(struct dsa_switch *ds, int *temp);
+	int	(*get_temp_limit)(struct dsa_switch *ds, int *temp);
+	int	(*set_temp_limit)(struct dsa_switch *ds, int temp);
+	int	(*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
+#endif
 };
 
 void register_switch_driver(struct dsa_switch_driver *type);

161 lines not on this page · raw message

index f17364f..744e6fa 100644
@@ -325,6 +325,101 @@ static int mv88e6352_setup_port(struct dsa_switch *ds, int p)
 	return 0;
 }
 
+#ifdef CONFIG_NET_DSA_HWMON
+
+static int mv88e6352_phy_page_read(struct dsa_switch *ds,
+				   int port, int page, int reg)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	int ret;
+
+	mutex_lock(&ps->phy_mutex);
+	ret = __mv88e6352_phy_write(ds, port, 0x16, page);
+	if (ret < 0)
+		goto error;
+	ret = __mv88e6352_phy_read(ds, port, reg);
+error:
+	__mv88e6352_phy_write(ds, port, 0x16, 0x0);
+	mutex_unlock(&ps->phy_mutex);
+	return ret;
+}
+
+static int mv88e6352_phy_page_write(struct dsa_switch *ds,
+				    int port, int page, int reg, int val)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	int ret;
+
+	mutex_lock(&ps->phy_mutex);
+	ret = __mv88e6352_phy_write(ds, port, 0x16, page);
+	if (ret < 0)
+		goto error;
+
+	ret = __mv88e6352_phy_write(ds, port, reg, val);
+error:
+	__mv88e6352_phy_write(ds, port, 0x16, 0x0);
+	mutex_unlock(&ps->phy_mutex);
+	return ret;
+}
+
+static int mv88e6352_get_temp(struct dsa_switch *ds, int *temp)
+{
+	int ret;
+
+	*temp = 0;
+
+	ret = mv88e6352_phy_page_read(ds, 0, 6, 27);
+	if (ret < 0)
+		return ret;
+
+	*temp = (ret & 0xff) - 25;
+
+	return 0;
+}
+
+static int mv88e6352_get_temp_limit(struct dsa_switch *ds, int *temp)
+{
+	int ret;
+
+	*temp = 0;
+
+	ret = mv88e6352_phy_page_read(ds, 0, 6, 26);
+	if (ret < 0)
+		return ret;
+
+	*temp = (((ret >> 8) & 0x1f) * 5) - 25;
+
+	return 0;
+}
+
+static int mv88e6352_set_temp_limit(struct dsa_switch *ds, int temp)
+{
+	int ret;
+
+	ret = mv88e6352_phy_page_read(ds, 0, 6, 26);
+	if (ret < 0)
+		return ret;
+	temp = clamp_val(DIV_ROUND_CLOSEST(temp, 5) + 5, 0, 0x1f);
+	return mv88e6352_phy_page_write(ds, 0, 6, 26,
+					(ret & 0xe0ff) | (temp << 8));
+}
+
+static int mv88e6352_get_temp_alarm(struct dsa_switch *ds, bool *alarm)
+{
+	int ret;
+
+	*alarm = false;
+
+	ret = mv88e6352_phy_page_read(ds, 0, 6, 26);
+	if (ret < 0)
+		return ret;
+
+	*alarm = !!(ret & 0x40);
+
+	return 0;
+}
+#endif /* CONFIG_NET_DSA_HWMON */
+
 static int mv88e6352_setup(struct dsa_switch *ds)
 {
 	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);

@@ -461,6 +556,12 @@ struct dsa_switch_driver mv88e6352_switch_driver = {
 	.get_strings		= mv88e6352_get_strings,
 	.get_ethtool_stats	= mv88e6352_get_ethtool_stats,
 	.get_sset_count		= mv88e6352_get_sset_count,
+#ifdef CONFIG_NET_DSA_HWMON
+	.get_temp		= mv88e6352_get_temp,
+	.get_temp_limit		= mv88e6352_get_temp_limit,
+	.set_temp_limit		= mv88e6352_set_temp_limit,
+	.get_temp_alarm		= mv88e6352_get_temp_alarm,
+#endif
 };
 
 MODULE_ALIAS("platform:mv88e6352");

index a332c53..9f43c9b 100644
@@ -291,6 +291,54 @@ static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p)
 	return 0;
 }
 
+#ifdef CONFIG_NET_DSA_HWMON
+
+static int  mv88e6123_61_65_get_temp(struct dsa_switch *ds, int *temp)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	int ret;
+	int val;
+
+	*temp = 0;
+
+	mutex_lock(&ps->phy_mutex);
+
+	ret = mv88e6xxx_phy_write(ds, 0x0, 0x16, 0x6);
+	if (ret < 0)
+		goto error;
+
+	/* Enable temperature sensor */
+	ret = mv88e6xxx_phy_read(ds, 0x0, 0x1a);
+	if (ret < 0)
+		goto error;
+
+	ret = mv88e6xxx_phy_write(ds, 0x0, 0x1a, ret | (1 << 5));
+	if (ret < 0)
+		goto error;
+
+	/* Wait for temperature to stabilize */
+	usleep_range(10000, 12000);
+
+	val = mv88e6xxx_phy_read(ds, 0x0, 0x1a);
+	if (val < 0) {
+		ret = val;
+		goto error;
+	}
+
+	/* Disable temperature sensor */
+	ret = mv88e6xxx_phy_write(ds, 0x0, 0x1a, ret & ~(1 << 5));
+	if (ret < 0)
+		goto error;
+
+	*temp = ((val & 0x1f) - 5) * 5;
+
+error:
+	mv88e6xxx_phy_write(ds, 0x0, 0x16, 0x0);
+	mutex_unlock(&ps->phy_mutex);
+	return ret;
+}
+#endif /* CONFIG_NET_DSA_HWMON */
+
 static int mv88e6123_61_65_setup(struct dsa_switch *ds)
 {
 	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);

@@ -299,6 +347,7 @@ static int mv88e6123_61_65_setup(struct dsa_switch *ds)
 
 	mutex_init(&ps->smi_mutex);
 	mutex_init(&ps->stats_mutex);
+	mutex_init(&ps->phy_mutex);
 
 	ret = mv88e6123_61_65_switch_reset(ds);
 	if (ret < 0)

@@ -329,16 +378,28 @@ static int mv88e6123_61_65_port_to_phy_addr(int port)
 static int
 mv88e6123_61_65_phy_read(struct dsa_switch *ds, int port, int regnum)
 {
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
 	int addr = mv88e6123_61_65_port_to_phy_addr(port);
-	return mv88e6xxx_phy_read(ds, addr, regnum);
+	int ret;
+
+	mutex_lock(&ps->phy_mutex);
+	ret = mv88e6xxx_phy_read(ds, addr, regnum);
+	mutex_unlock(&ps->phy_mutex);
+	return ret;
 }
 
 static int
 mv88e6123_61_65_phy_write(struct dsa_switch *ds,
 			      int port, int regnum, u16 val)
 {
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
 	int addr = mv88e6123_61_65_port_to_phy_addr(port);
-	return mv88e6xxx_phy_write(ds, addr, regnum, val);
+	int ret;
+
+	mutex_lock(&ps->phy_mutex);
+	ret = mv88e6xxx_phy_write(ds, addr, regnum, val);
+	mutex_unlock(&ps->phy_mutex);
+	return ret;
 }
 
 static struct mv88e6xxx_hw_stat mv88e6123_61_65_hw_stats[] = {

@@ -406,6 +467,9 @@ struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
 	.get_strings		= mv88e6123_61_65_get_strings,
 	.get_ethtool_stats	= mv88e6123_61_65_get_ethtool_stats,
 	.get_sset_count		= mv88e6123_61_65_get_sset_count,
+#ifdef CONFIG_NET_DSA_HWMON
+	.get_temp		= mv88e6123_61_65_get_temp,
+#endif
 };
 
 MODULE_ALIAS("platform:mv88e6123");

index 55e75e7..37856a2 100644
@@ -38,6 +38,9 @@ struct dsa_chip_data {
 	struct device	*host_dev;
 	int		sw_addr;
 
+	/* set to size of eeprom if supported by the switch */
+	int		eeprom_len;
+
 	/* Device tree node pointer for this specific switch chip
 	 * used during switch setup in case additional properties
 	 * and resources needs to be used

@@ -258,6 +261,13 @@ struct dsa_switch_driver {
 	int	(*set_temp_limit)(struct dsa_switch *ds, int temp);
 	int	(*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
 #endif
+
+	/* EEPROM access */
+	int	(*get_eeprom_len)(struct dsa_switch *ds);
+	int	(*get_eeprom)(struct dsa_switch *ds,
+			      struct ethtool_eeprom *eeprom, u8 *data);
+	int	(*set_eeprom)(struct dsa_switch *ds,
+			      struct ethtool_eeprom *eeprom, u8 *data);
 };
 
 void register_switch_driver(struct dsa_switch_driver *type);

index 5edbbca..b51ef592 100644
@@ -575,6 +575,7 @@ static int dsa_of_probe(struct platform_device *pdev)
 	const char *port_name;
 	int chip_index, port_index;
 	const unsigned int *sw_addr, *port_reg;
+	u32 eeprom_len;
 	int ret;
 
 	mdio = of_parse_phandle(np, "dsa,mii-bus", 0);

@@ -626,6 +627,9 @@ static int dsa_of_probe(struct platform_device *pdev)
 		if (cd->sw_addr > PHY_MAX_ADDR)
 			continue;
 
+		if (!of_property_read_u32(np, "eeprom-length", &eeprom_len))
+			cd->eeprom_len = eeprom_len;
+
 		for_each_available_child_of_node(child, port) {
 			port_reg = of_get_property(port, "reg", NULL);
 			if (!port_reg)

53 lines not on this page · raw message

index 1600aa2..06dfb29 100644
@@ -1036,7 +1036,8 @@ static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
 {
 	const struct ethtool_ops *ops = dev->ethtool_ops;
 
-	if (!ops->get_eeprom || !ops->get_eeprom_len)
+	if (!ops->get_eeprom || !ops->get_eeprom_len ||
+	    !ops->get_eeprom_len(dev))
 		return -EOPNOTSUPP;
 
 	return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,

@@ -1052,7 +1053,8 @@ static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
 	u8 *data;
 	int ret = 0;
 
-	if (!ops->set_eeprom || !ops->get_eeprom_len)
+	if (!ops->set_eeprom || !ops->get_eeprom_len ||
+	    !ops->get_eeprom_len(dev))
 		return -EOPNOTSUPP;
 
 	if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))

index 744e6fa..8a956f9 100644
@@ -22,18 +22,18 @@
 #include <net/dsa.h>
 #include "mv88e6xxx.h"
 
-static int mv88e6352_phy_wait(struct dsa_switch *ds)
+static int mv88e6352_wait(struct dsa_switch *ds, int reg, u16 mask)
 {
 	unsigned long timeout = jiffies + HZ / 10;
 
 	while (time_before(jiffies, timeout)) {
 		int ret;
 
-		ret = REG_READ(REG_GLOBAL2, 0x18);
+		ret = REG_READ(REG_GLOBAL2, reg);
 		if (ret < 0)
 			return ret;
 
-		if (!(ret & 0x8000))
+		if (!(ret & mask))
 			return 0;
 
 		usleep_range(1000, 2000);

@@ -41,6 +41,21 @@ static int mv88e6352_phy_wait(struct dsa_switch *ds)
 	return -ETIMEDOUT;
 }
 
+static inline int mv88e6352_phy_wait(struct dsa_switch *ds)
+{
+	return mv88e6352_wait(ds, 0x18, 0x8000);
+}
+
+static inline int mv88e6352_eeprom_load_wait(struct dsa_switch *ds)
+{
+	return mv88e6352_wait(ds, 0x14, 0x0800);
+}
+
+static inline int mv88e6352_eeprom_busy_wait(struct dsa_switch *ds)
+{
+	return mv88e6352_wait(ds, 0x14, 0x8000);
+}
+
 static int __mv88e6352_phy_read(struct dsa_switch *ds, int addr, int regnum)
 {
 	int ret;

@@ -429,6 +444,7 @@ static int mv88e6352_setup(struct dsa_switch *ds)
 	mutex_init(&ps->smi_mutex);
 	mutex_init(&ps->stats_mutex);
 	mutex_init(&ps->phy_mutex);
+	mutex_init(&ps->eeprom_mutex);
 
 	ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0;
 

@@ -525,6 +541,204 @@ static struct mv88e6xxx_hw_stat mv88e6352_hw_stats[] = {
 	{ "hist_1024_max_bytes", 4, 0x0d, },
 };
 
+static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	int ret;
+
+	mutex_lock(&ps->eeprom_mutex);
+
+	ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x14,
+				  0xc000 | (addr & 0xff));
+	if (ret < 0)
+		goto error;
+
+	ret = mv88e6352_eeprom_busy_wait(ds);
+	if (ret < 0)
+		goto error;
+
+	ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, 0x15);
+error:
+	mutex_unlock(&ps->eeprom_mutex);
+	return ret;
+}
+
+static int mv88e6352_get_eeprom(struct dsa_switch *ds,
+				struct ethtool_eeprom *eeprom, u8 *data)
+{
+	int offset;
+	int len;
+	int ret;
+
+	offset = eeprom->offset;
+	len = eeprom->len;
+	eeprom->len = 0;
+
+	eeprom->magic = 0xc3ec4951;
+
+	ret = mv88e6352_eeprom_load_wait(ds);
+	if (ret < 0)
+		return ret;
+
+	if (offset & 1) {
+		int word;
+
+		word = mv88e6352_read_eeprom_word(ds, offset >> 1);
+		if (word < 0)
+			return word;
+
+		*data++ = (word >> 8) & 0xff;
+
+		offset++;
+		len--;
+		eeprom->len++;
+	}
+
+	while (len >= 2) {
+		int word;
+
+		word = mv88e6352_read_eeprom_word(ds, offset >> 1);
+		if (word < 0)
+			return word;
+
+		*data++ = word & 0xff;
+		*data++ = (word >> 8) & 0xff;
+
+		offset += 2;
+		len -= 2;
+		eeprom->len += 2;
+	}
+
+	if (len) {
+		int word;
+
+		word = mv88e6352_read_eeprom_word(ds, offset >> 1);
+		if (word < 0)
+			return word;
+
+		*data++ = word & 0xff;
+
+		offset++;
+		len--;
+		eeprom->len++;
+	}
+
+	return 0;
+}
+
+static int mv88e6352_eeprom_is_readonly(struct dsa_switch *ds)
+{
+	int ret;
+
+	ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, 0x14);
+	if (ret < 0)
+		return ret;
+
+	if (!(ret & 0x0400))
+		return -EROFS;
+
+	return 0;
+}
+
+static int mv88e6352_write_eeprom_word(struct dsa_switch *ds, int addr,
+				       u16 data)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+	int ret;
+
+	mutex_lock(&ps->eeprom_mutex);
+
+	ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x15, data);
+	if (ret < 0)
+		goto error;
+
+	ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x14,
+				  0xb000 | (addr & 0xff));
+	if (ret < 0)
+		goto error;
+
+	ret = mv88e6352_eeprom_busy_wait(ds);
+error:
+	mutex_unlock(&ps->eeprom_mutex);
+	return ret;
+}
+
+static int mv88e6352_set_eeprom(struct dsa_switch *ds,
+				struct ethtool_eeprom *eeprom, u8 *data)
+{
+	int offset;
+	int ret;
+	int len;
+
+	if (eeprom->magic != 0xc3ec4951)
+		return -EINVAL;
+
+	ret = mv88e6352_eeprom_is_readonly(ds);
+	if (ret)
+		return ret;
+
+	offset = eeprom->offset;
+	len = eeprom->len;
+	eeprom->len = 0;
+
+	ret = mv88e6352_eeprom_load_wait(ds);
+	if (ret < 0)
+		return ret;
+
+	if (offset & 1) {
+		int word;
+
+		word = mv88e6352_read_eeprom_word(ds, offset >> 1);
+		if (word < 0)
+			return word;
+
+		word = (*data++ << 8) | (word & 0xff);
+
+		ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word);
+		if (ret < 0)
+			return ret;
+
+		offset++;
+		len--;
+		eeprom->len++;
+	}
+
+	while (len >= 2) {
+		int word;
+
+		word = *data++;
+		word |= *data++ << 8;
+
+		ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word);
+		if (ret < 0)
+			return ret;
+
+		offset += 2;
+		len -= 2;
+		eeprom->len += 2;
+	}
+
+	if (len) {
+		int word;
+
+		word = mv88e6352_read_eeprom_word(ds, offset >> 1);
+		if (word < 0)
+			return word;
+
+		word = (word & 0xff00) | *data++;
+
+		ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word);
+		if (ret < 0)
+			return ret;
+
+		offset++;
+		len--;
+		eeprom->len++;
+	}
+
+	return 0;
+}
+
 static void
 mv88e6352_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
 {

@@ -562,6 +776,8 @@ struct dsa_switch_driver mv88e6352_switch_driver = {
 	.set_temp_limit		= mv88e6352_set_temp_limit,
 	.get_temp_alarm		= mv88e6352_get_temp_alarm,
 #endif
+	.get_eeprom		= mv88e6352_get_eeprom,
+	.set_eeprom		= mv88e6352_set_eeprom,
 };
 
 MODULE_ALIAS("platform:mv88e6352");

index c0ce133..29feed0 100644
@@ -43,6 +43,11 @@ struct mv88e6xxx_priv_state {
 	 */
 	struct mutex	phy_mutex;
 
+	/* This mutex serializes eeprom access for chips with
+	 * eeprom support.
+	 */
+	struct mutex eeprom_mutex;
+
 	int		id; /* switch product id */
 };
 

index 37856a2..ed3c34b 100644
@@ -268,6 +268,13 @@ struct dsa_switch_driver {
 			      struct ethtool_eeprom *eeprom, u8 *data);
 	int	(*set_eeprom)(struct dsa_switch *ds,
 			      struct ethtool_eeprom *eeprom, u8 *data);
+
+	/*
+	 * Register access.
+	 */
+	int	(*get_regs_len)(struct dsa_switch *ds, int port);
+	void	(*get_regs)(struct dsa_switch *ds, int port,
+			    struct ethtool_regs *regs, void *p);
 };
 
 void register_switch_driver(struct dsa_switch_driver *type);

index ff2fbe7..474f296 100644
@@ -249,6 +249,27 @@ static void dsa_slave_get_drvinfo(struct net_device *dev,
 	strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
 }
 
+static int dsa_slave_get_regs_len(struct net_device *dev)
+{
+	struct dsa_slave_priv *p = netdev_priv(dev);
+	struct dsa_switch *ds = p->parent;
+
+	if (ds->drv->get_regs_len)
+		return ds->drv->get_regs_len(ds, p->port);
+
+	return -EOPNOTSUPP;
+}
+
+static void
+dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
+{
+	struct dsa_slave_priv *p = netdev_priv(dev);
+	struct dsa_switch *ds = p->parent;
+
+	if (ds->drv->get_regs)
+		ds->drv->get_regs(ds, p->port, regs, _p);
+}
+
 static int dsa_slave_nway_reset(struct net_device *dev)
 {
 	struct dsa_slave_priv *p = netdev_priv(dev);

@@ -423,6 +444,8 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
 	.get_settings		= dsa_slave_get_settings,
 	.set_settings		= dsa_slave_set_settings,
 	.get_drvinfo		= dsa_slave_get_drvinfo,
+	.get_regs_len		= dsa_slave_get_regs_len,
+	.get_regs		= dsa_slave_get_regs,
 	.nway_reset		= dsa_slave_nway_reset,
 	.get_link		= dsa_slave_get_link,
 	.get_eeprom_len		= dsa_slave_get_eeprom_len,

index 9f43c9b..e2d2e37 100644
@@ -470,6 +470,8 @@ struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
 #ifdef CONFIG_NET_DSA_HWMON
 	.get_temp		= mv88e6123_61_65_get_temp,
 #endif
+	.get_regs_len		= mv88e6xxx_get_regs_len,
+	.get_regs		= mv88e6xxx_get_regs,
 };
 
 MODULE_ALIAS("platform:mv88e6123");

index 8e1090b..c071fde 100644
@@ -499,6 +499,30 @@ void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
 	mutex_unlock(&ps->stats_mutex);
 }
 
+int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
+{
+	return 32 * sizeof(u16);
+}
+
+void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
+			struct ethtool_regs *regs, void *_p)
+{
+	u16 *p = _p;
+	int i;
+
+	regs->version = 0;
+
+	memset(p, 0xff, 32 * sizeof(u16));
+
+	for (i = 0; i < 32; i++) {
+		int ret;
+
+		ret = mv88e6xxx_reg_read(ds, REG_PORT(port), i);
+		if (ret >= 0)
+			p[i] = ret;
+	}
+}
+
 static int __init mv88e6xxx_init(void)
 {
 #if IS_ENABLED(CONFIG_NET_DSA_MV88E6131)

index 29feed0..a0780b0 100644
@@ -78,6 +78,9 @@ void mv88e6xxx_get_strings(struct dsa_switch *ds,
 void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
 				 int nr_stats, struct mv88e6xxx_hw_stat *stats,
 				 int port, uint64_t *data);
+int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port);
+void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
+			struct ethtool_regs *regs, void *_p);
 
 extern struct dsa_switch_driver mv88e6131_switch_driver;
 extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;

index 8a956f9..d5bbe49 100644
@@ -778,6 +778,8 @@ struct dsa_switch_driver mv88e6352_switch_driver = {
 #endif
 	.get_eeprom		= mv88e6352_get_eeprom,
 	.set_eeprom		= mv88e6352_set_eeprom,
+	.get_regs_len		= mv88e6xxx_get_regs_len,
+	.get_regs		= mv88e6xxx_get_regs,
 };
 
 MODULE_ALIAS("platform:mv88e6352");

index e2d2e37..9a3f9e0 100644
@@ -433,6 +433,9 @@ static struct mv88e6xxx_hw_stat mv88e6123_61_65_hw_stats[] = {
 	{ "hist_256_511bytes", 4, 0x0b, },
 	{ "hist_512_1023bytes", 4, 0x0c, },
 	{ "hist_1024_max_bytes", 4, 0x0d, },
+	{ "sw_in_discards", 4, 0x110, },
+	{ "sw_in_filtered", 2, 0x112, },
+	{ "sw_out_filtered", 2, 0x113, },
 };
 
 static void

index d5bbe49..258d9ef 100644
@@ -539,6 +539,9 @@ static struct mv88e6xxx_hw_stat mv88e6352_hw_stats[] = {
 	{ "hist_256_511bytes", 4, 0x0b, },
 	{ "hist_512_1023bytes", 4, 0x0c, },
 	{ "hist_1024_max_bytes", 4, 0x0d, },
+	{ "sw_in_discards", 4, 0x110, },
+	{ "sw_in_filtered", 2, 0x112, },
+	{ "sw_out_filtered", 2, 0x113, },
 };
 
 static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr)

index c071fde..da558d8 100644
@@ -485,17 +485,33 @@ void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
 	for (i = 0; i < nr_stats; i++) {
 		struct mv88e6xxx_hw_stat *s = stats + i;
 		u32 low;
-		u32 high;
-
+		u32 high = 0;
+
+		if (s->reg >= 0x100) {
+			int ret;
+
+			ret = mv88e6xxx_reg_read(ds, REG_PORT(port),
+						 s->reg - 0x100);
+			if (ret < 0)
+				goto error;
+			low = ret;
+			if (s->sizeof_stat == 4) {
+				ret = mv88e6xxx_reg_read(ds, REG_PORT(port),
+							 s->reg - 0x100 + 1);
+				if (ret < 0)
+					goto error;
+				high = ret;
+			}
+			data[i] = (((u64)high) << 16) | low;
+			continue;
+		}
 		mv88e6xxx_stats_read(ds, s->reg, &low);
 		if (s->sizeof_stat == 8)
 			mv88e6xxx_stats_read(ds, s->reg + 1, &high);
-		else
-			high = 0;
 
 		data[i] = (((u64)high) << 32) | low;
 	}
-
+error:
 	mutex_unlock(&ps->stats_mutex);
 }