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net: dsa: mv88e6xxx: Allow PCS registers to be retrieved via ethtool 

ethtool provides a generic mechanism for a driver to return the
registers of an ethernet device. DSA uses this to give the port
registers associated with an interfaces. Extend this to allow PCS
registers to also be returned, if the port has a PCS associated to it.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2020-02-16 18:54:13 +01:00 committed by David S. Miller
parent 27aa6228d6
commit 0d30bbd03d
2 changed files with 16 additions and 1 deletions
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12
drivers/net/dsa/mv88e6xxx/chip.c
View File

@ -1018,7 +1018,14 @@ static void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds, int port,
static int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
{
return 32 * sizeof(u16);
struct mv88e6xxx_chip *chip = ds->priv;
int len;
len = 32 * sizeof(u16);
if (chip->info->ops->serdes_get_regs_len)
len += chip->info->ops->serdes_get_regs_len(chip, port);
return len;
}
static void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
@ -1043,6 +1050,9 @@ static void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
p[i] = reg;
}
if (chip->info->ops->serdes_get_regs)
chip->info->ops->serdes_get_regs(chip, port, &p[i]);
mv88e6xxx_reg_unlock(chip);
}

5
drivers/net/dsa/mv88e6xxx/chip.h
View File

@ -517,6 +517,11 @@ struct mv88e6xxx_ops {
int (*serdes_get_stats)(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
/* SERDES registers for ethtool */
int (*serdes_get_regs_len)(struct mv88e6xxx_chip *chip, int port);
void (*serdes_get_regs)(struct mv88e6xxx_chip *chip, int port,
void *_p);
/* Address Translation Unit operations */
int (*atu_get_hash)(struct mv88e6xxx_chip *chip, u8 *hash);
int (*atu_set_hash)(struct mv88e6xxx_chip *chip, u8 hash);