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lan78xx: Add support to dump lan78xx registers

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

Signed-off-by: Raghuram Chary J <raghuramchary.jallipalli@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Raghuram Chary J 2018-04-20 11:43:50 +05:30 committed by David S. Miller
parent 0a8b275d7d
commit 496218656f
1 changed files with 54 additions and 0 deletions
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54
drivers/net/usb/lan78xx.c
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@ -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 @@ exit:
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)