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net: dsa: mt7530: generalize read port stats logic

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In preparation for migration to use of standard MIB API, generalize the
read port stats logic to a dedicated function.

This will permit to manually provide the offset and size of the MIB
counter to directly access specific counter.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://patch.msgid.link/20250410163022.3695-2-ansuelsmth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Christian Marangi 2025-04-10 18:30:09 +02:00 committed by Paolo Abeni
parent 0f2be57686
commit ee6a2db281
1 changed files with 18 additions and 8 deletions
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26
drivers/net/dsa/mt7530.c
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@ -789,24 +789,34 @@ mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
ethtool_puts(&data, mt7530_mib[i].name);
}
static void
mt7530_read_port_stats(struct mt7530_priv *priv, int port,
u32 offset, u8 size, uint64_t *data)
{
u32 val, reg = MT7530_PORT_MIB_COUNTER(port) + offset;
val = mt7530_read(priv, reg);
*data = val;
if (size == 2) {
val = mt7530_read(priv, reg + 4);
*data |= (u64)val << 32;
}
}
static void
mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
uint64_t *data)
{
struct mt7530_priv *priv = ds->priv;
const struct mt7530_mib_desc *mib;
u32 reg, i;
u64 hi;
int i;
for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
mib = &mt7530_mib[i];
reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
data[i] = mt7530_read(priv, reg);
if (mib->size == 2) {
hi = mt7530_read(priv, reg + 4);
data[i] |= hi << 32;
}
mt7530_read_port_stats(priv, port, mib->offset, mib->size,
data + i);
}
}