Commit 3d762a0f authored by Guenter Roeck's avatar Guenter Roeck Committed by David S. Miller
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net: dsa: Add support for reading switch registers with ethtool 



Add support for reading switch registers with 'ethtool -d'.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 33b43df4

include/net/dsa.h

+7 −0
Original line number Diff line number Diff line
@@ -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);

net/dsa/slave.c

+23 −0
Original line number Diff line number Diff line
@@ -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,