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Commit 49621865 authored by Raghuram Chary J's avatar Raghuram Chary J Committed by David S. Miller
Browse files

lan78xx: Add support to dump lan78xx registers 



In order to dump lan78xx family registers using ethtool, add
support at lan78xx driver level.

Signed-off-by: default avatarRaghuram Chary J <raghuramchary.jallipalli@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0a8b275d

drivers/net/usb/lan78xx.c

+54 −0
Original line number Diff line number Diff line
@@ -280,6 +280,30 @@ struct lan78xx_statstage64 { 
	u64 eee_tx_lpi_time;

};



static u32 lan78xx_regs[] = {

	ID_REV,

	INT_STS,

	HW_CFG,

	PMT_CTL,

	E2P_CMD,

	E2P_DATA,

	USB_STATUS,

	VLAN_TYPE,

	MAC_CR,

	MAC_RX,

	MAC_TX,

	FLOW,

	ERR_STS,

	MII_ACC,

	MII_DATA,

	EEE_TX_LPI_REQ_DLY,

	EEE_TW_TX_SYS,

	EEE_TX_LPI_REM_DLY,

	WUCSR

};



#define PHY_REG_SIZE (32 * sizeof(u32))



struct lan78xx_net;



struct lan78xx_priv {
@@ -1607,6 +1631,34 @@ static int lan78xx_set_pause(struct net_device *net, 
	return ret;

}



static int lan78xx_get_regs_len(struct net_device *netdev)

{

	if (!netdev->phydev)

		return (sizeof(lan78xx_regs));

	else

		return (sizeof(lan78xx_regs) + PHY_REG_SIZE);

}



static void

lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs,

		 void *buf)

{

	u32 *data = buf;

	int i, j;

	struct lan78xx_net *dev = netdev_priv(netdev);



	/* Read Device/MAC registers */

	for (i = 0; i < (sizeof(lan78xx_regs) / sizeof(u32)); i++)

		lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]);



	if (!netdev->phydev)

		return;



	/* Read PHY registers */

	for (j = 0; j < 32; i++, j++)

		data[i] = phy_read(netdev->phydev, j);

}



static const struct ethtool_ops lan78xx_ethtool_ops = {

	.get_link	= lan78xx_get_link,

	.nway_reset	= phy_ethtool_nway_reset,
@@ -1627,6 +1679,8 @@ static const struct ethtool_ops lan78xx_ethtool_ops = { 
	.set_pauseparam	= lan78xx_set_pause,

	.get_link_ksettings = lan78xx_get_link_ksettings,

	.set_link_ksettings = lan78xx_set_link_ksettings,

	.get_regs_len	= lan78xx_get_regs_len,

	.get_regs	= lan78xx_get_regs,

};



static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)