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net: phy: smsc: Implement PHY statistics

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Most of the PHYs supported by the SMSC driver have a counter of symbol
errors. This is 16 bit wide and wraps around when it reaches its
maximum value.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-By: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2017-06-03 20:00:36 +02:00 committed by David S. Miller
parent 386e2e4bd7
commit 030a89028d
1 changed files with 72 additions and 0 deletions
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72
drivers/net/phy/smsc.c
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@ -25,6 +25,16 @@
#include <linux/netdevice.h>
#include <linux/smscphy.h>
struct smsc_hw_stat {
const char *string;
u8 reg;
u8 bits;
};
static struct smsc_hw_stat smsc_hw_stats[] = {
{ "phy_symbol_errors", 26, 16},
};
struct smsc_phy_priv {
bool energy_enable;
};
@ -143,6 +153,48 @@ static int lan87xx_read_status(struct phy_device *phydev)
return err;
}
static int smsc_get_sset_count(struct phy_device *phydev)
{
return ARRAY_SIZE(smsc_hw_stats);
}
static void smsc_get_strings(struct phy_device *phydev, u8 *data)
{
int i;
for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++) {
memcpy(data + i * ETH_GSTRING_LEN,
smsc_hw_stats[i].string, ETH_GSTRING_LEN);
}
}
#ifndef UINT64_MAX
#define UINT64_MAX (u64)(~((u64)0))
#endif
static u64 smsc_get_stat(struct phy_device *phydev, int i)
{
struct smsc_hw_stat stat = smsc_hw_stats[i];
int val;
u64 ret;
val = phy_read(phydev, stat.reg);
if (val < 0)
ret = UINT64_MAX;
else
ret = val;
return ret;
}
static void smsc_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data)
{
int i;
for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)
data[i] = smsc_get_stat(phydev, i);
}
static int smsc_phy_probe(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
@ -206,6 +258,11 @@ static struct phy_driver smsc_phy_driver[] = {
.ack_interrupt = smsc_phy_ack_interrupt,
.config_intr = smsc_phy_config_intr,
/* Statistics */
.get_sset_count = smsc_get_sset_count,
.get_strings = smsc_get_strings,
.get_stats = smsc_get_stats,
.suspend = genphy_suspend,
.resume = genphy_resume,
}, {
@ -228,6 +285,11 @@ static struct phy_driver smsc_phy_driver[] = {
.ack_interrupt = smsc_phy_ack_interrupt,
.config_intr = smsc_phy_config_intr,
/* Statistics */
.get_sset_count = smsc_get_sset_count,
.get_strings = smsc_get_strings,
.get_stats = smsc_get_stats,
.suspend = genphy_suspend,
.resume = genphy_resume,
}, {
@ -271,6 +333,11 @@ static struct phy_driver smsc_phy_driver[] = {
.ack_interrupt = smsc_phy_ack_interrupt,
.config_intr = smsc_phy_config_intr,
/* Statistics */
.get_sset_count = smsc_get_sset_count,
.get_strings = smsc_get_strings,
.get_stats = smsc_get_stats,
.suspend = genphy_suspend,
.resume = genphy_resume,
}, {
@ -293,6 +360,11 @@ static struct phy_driver smsc_phy_driver[] = {
.ack_interrupt = smsc_phy_ack_interrupt,
.config_intr = smsc_phy_config_intr,
/* Statistics */
.get_sset_count = smsc_get_sset_count,
.get_strings = smsc_get_strings,
.get_stats = smsc_get_stats,
.suspend = genphy_suspend,
.resume = genphy_resume,
} };