void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
int nr_stats, struct mv88e6xxx_hw_stat *stats,
int port, uint64_t *data)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
int i;
mutex_lock(&ps->stats_mutex);
ret = mv88e6xxx_stats_snapshot(ds, port);
if (ret < 0) {
mutex_unlock(&ps->stats_mutex);
return;
}
/* Read each of the counters. */
for (i = 0; i < nr_stats; i++) {
struct mv88e6xxx_hw_stat *s = stats + i;
u32 low;
u32 high;
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;
}
mutex_unlock(&ps->stats_mutex);
}
static void _mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
int nr_stats,
struct mv88e6xxx_hw_stat *stats,
int port, uint64_t *data)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
int i;
mutex_lock(&ps->stats_mutex);
ret = mv88e6xxx_stats_snapshot(ds, port);
if (ret < 0) {
mutex_unlock(&ps->stats_mutex);
return;
}
/* Read each of the counters. */
for (i = 0; i < nr_stats; i++) {
struct mv88e6xxx_hw_stat *s = stats + i;
u32 low;
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);
data[i] = (((u64)high) << 32) | low;
}
error:
mutex_unlock(&ps->stats_mutex);
}