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mlxsw: spectrum: Add support for access cable info via ethtool

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Add support for access cable info via ethtool.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arkadi Sharshevsky 2017-06-14 09:27:40 +02:00 committed by David S. Miller
parent 7ca36994a3
commit 2ea109039c
1 changed files with 131 additions and 0 deletions
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131
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@ -2519,6 +2519,135 @@ out:
return err;
}
#define MLXSW_SP_QSFP_I2C_ADDR 0x50
static int mlxsw_sp_query_module_eeprom(struct mlxsw_sp_port *mlxsw_sp_port,
u16 offset, u16 size, void *data,
unsigned int *p_read_size)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char eeprom_tmp[MLXSW_SP_REG_MCIA_EEPROM_SIZE];
char mcia_pl[MLXSW_REG_MCIA_LEN];
int status;
int err;
size = min_t(u16, size, MLXSW_SP_REG_MCIA_EEPROM_SIZE);
mlxsw_reg_mcia_pack(mcia_pl, mlxsw_sp_port->mapping.module,
0, 0, offset, size, MLXSW_SP_QSFP_I2C_ADDR);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mcia), mcia_pl);
if (err)
return err;
status = mlxsw_reg_mcia_status_get(mcia_pl);
if (status)
return -EIO;
mlxsw_reg_mcia_eeprom_memcpy_from(mcia_pl, eeprom_tmp);
memcpy(data, eeprom_tmp, size);
*p_read_size = size;
return 0;
}
enum mlxsw_sp_eeprom_module_info_rev_id {
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_UNSPC = 0x00,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8436 = 0x01,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636 = 0x03,
};
enum mlxsw_sp_eeprom_module_info_id {
MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP = 0x03,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP = 0x0C,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS = 0x0D,
MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28 = 0x11,
};
enum mlxsw_sp_eeprom_module_info {
MLXSW_SP_EEPROM_MODULE_INFO_ID,
MLXSW_SP_EEPROM_MODULE_INFO_REV_ID,
MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
};
static int mlxsw_sp_get_module_info(struct net_device *netdev,
struct ethtool_modinfo *modinfo)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
u8 module_info[MLXSW_SP_EEPROM_MODULE_INFO_SIZE];
u8 module_rev_id, module_id;
unsigned int read_size;
int err;
err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, 0,
MLXSW_SP_EEPROM_MODULE_INFO_SIZE,
module_info, &read_size);
if (err)
return err;
if (read_size < MLXSW_SP_EEPROM_MODULE_INFO_SIZE)
return -EIO;
module_rev_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_REV_ID];
module_id = module_info[MLXSW_SP_EEPROM_MODULE_INFO_ID];
switch (module_id) {
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP:
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
break;
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP_PLUS:
case MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28:
if (module_id == MLXSW_SP_EEPROM_MODULE_INFO_ID_QSFP28 ||
module_rev_id >= MLXSW_SP_EEPROM_MODULE_INFO_REV_ID_8636) {
modinfo->type = ETH_MODULE_SFF_8636;
modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
}
break;
case MLXSW_SP_EEPROM_MODULE_INFO_ID_SFP:
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
break;
default:
return -EINVAL;
}
return 0;
}
static int mlxsw_sp_get_module_eeprom(struct net_device *netdev,
struct ethtool_eeprom *ee,
u8 *data)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(netdev);
int offset = ee->offset;
unsigned int read_size;
int i = 0;
int err;
if (!ee->len)
return -EINVAL;
memset(data, 0, ee->len);
while (i < ee->len) {
err = mlxsw_sp_query_module_eeprom(mlxsw_sp_port, offset,
ee->len - i, data + i,
&read_size);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Eeprom query failed\n");
return err;
}
i += read_size;
offset += read_size;
}
return 0;
}
static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
.get_drvinfo = mlxsw_sp_port_get_drvinfo,
.get_link = ethtool_op_get_link,
@ -2531,6 +2660,8 @@ static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
.get_link_ksettings = mlxsw_sp_port_get_link_ksettings,
.set_link_ksettings = mlxsw_sp_port_set_link_ksettings,
.flash_device = mlxsw_sp_flash_device,
.get_module_info = mlxsw_sp_get_module_info,
.get_module_eeprom = mlxsw_sp_get_module_eeprom,
};
static int