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mlxsw: Implement ethtool operation to write to a transceiver module EEPROM

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Implement the ethtool_ops::set_module_eeprom_by_page operation to allow
ethtool to write to a transceiver module EEPROM, in a similar fashion to
the ethtool_ops::get_module_eeprom_by_page operation.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2024-06-27 17:08:49 +03:00 committed by David S. Miller
parent 69540b7987
commit 1983a80070
4 changed files with 93 additions and 0 deletions
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57
drivers/net/ethernet/mellanox/mlxsw/core_env.c
View File

@ -513,6 +513,63 @@ mlxsw_env_get_module_eeprom_by_page(struct mlxsw_core *mlxsw_core,
}
EXPORT_SYMBOL(mlxsw_env_get_module_eeprom_by_page);
int
mlxsw_env_set_module_eeprom_by_page(struct mlxsw_core *mlxsw_core,
u8 slot_index, u8 module,
const struct ethtool_module_eeprom *page,
struct netlink_ext_ack *extack)
{
struct mlxsw_env *mlxsw_env = mlxsw_core_env(mlxsw_core);
u32 bytes_written = 0;
u16 device_addr;
int err;
if (!mlxsw_env_linecard_is_active(mlxsw_env, slot_index)) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot write to EEPROM of a module on an inactive line card");
return -EIO;
}
err = mlxsw_env_validate_module_type(mlxsw_core, slot_index, module);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "EEPROM is not equipped on port module type");
return err;
}
device_addr = page->offset;
while (bytes_written < page->length) {
char mcia_pl[MLXSW_REG_MCIA_LEN];
char eeprom_tmp[128] = {};
u8 size;
size = min_t(u8, page->length - bytes_written,
mlxsw_env->max_eeprom_len);
mlxsw_reg_mcia_pack(mcia_pl, slot_index, module, page->page,
device_addr + bytes_written, size,
page->i2c_address);
mlxsw_reg_mcia_bank_number_set(mcia_pl, page->bank);
memcpy(eeprom_tmp, page->data + bytes_written, size);
mlxsw_reg_mcia_eeprom_memcpy_to(mcia_pl, eeprom_tmp);
err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcia), mcia_pl);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to access module's EEPROM");
return err;
}
err = mlxsw_env_mcia_status_process(mcia_pl, extack);
if (err)
return err;
bytes_written += size;
}
return 0;
}
EXPORT_SYMBOL(mlxsw_env_set_module_eeprom_by_page);
static int mlxsw_env_module_reset(struct mlxsw_core *mlxsw_core, u8 slot_index,
u8 module)
{

6
drivers/net/ethernet/mellanox/mlxsw/core_env.h
View File

@ -28,6 +28,12 @@ mlxsw_env_get_module_eeprom_by_page(struct mlxsw_core *mlxsw_core,
const struct ethtool_module_eeprom *page,
struct netlink_ext_ack *extack);
int
mlxsw_env_set_module_eeprom_by_page(struct mlxsw_core *mlxsw_core,
u8 slot_index, u8 module,
const struct ethtool_module_eeprom *page,
struct netlink_ext_ack *extack);
int mlxsw_env_reset_module(struct net_device *netdev,
struct mlxsw_core *mlxsw_core, u8 slot_index,
u8 module, u32 *flags);

15
drivers/net/ethernet/mellanox/mlxsw/minimal.c
View File

@ -140,6 +140,20 @@ mlxsw_m_get_module_eeprom_by_page(struct net_device *netdev,
page, extack);
}
static int
mlxsw_m_set_module_eeprom_by_page(struct net_device *netdev,
const struct ethtool_module_eeprom *page,
struct netlink_ext_ack *extack)
{
struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
return mlxsw_env_set_module_eeprom_by_page(core,
mlxsw_m_port->slot_index,
mlxsw_m_port->module,
page, extack);
}
static int mlxsw_m_reset(struct net_device *netdev, u32 *flags)
{
struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
@ -181,6 +195,7 @@ static const struct ethtool_ops mlxsw_m_port_ethtool_ops = {
.get_module_info = mlxsw_m_get_module_info,
.get_module_eeprom = mlxsw_m_get_module_eeprom,
.get_module_eeprom_by_page = mlxsw_m_get_module_eeprom_by_page,
.set_module_eeprom_by_page = mlxsw_m_set_module_eeprom_by_page,
.reset = mlxsw_m_reset,
.get_module_power_mode = mlxsw_m_get_module_power_mode,
.set_module_power_mode = mlxsw_m_set_module_power_mode,

15
drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c
View File

@ -1067,6 +1067,20 @@ mlxsw_sp_get_module_eeprom_by_page(struct net_device *dev,
module, page, extack);
}
static int
mlxsw_sp_set_module_eeprom_by_page(struct net_device *dev,
const struct ethtool_module_eeprom *page,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
u8 slot_index = mlxsw_sp_port->mapping.slot_index;
u8 module = mlxsw_sp_port->mapping.module;
return mlxsw_env_set_module_eeprom_by_page(mlxsw_sp->core, slot_index,
module, page, extack);
}
static int
mlxsw_sp_get_ts_info(struct net_device *netdev, struct ethtool_ts_info *info)
{
@ -1256,6 +1270,7 @@ const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
.get_module_info = mlxsw_sp_get_module_info,
.get_module_eeprom = mlxsw_sp_get_module_eeprom,
.get_module_eeprom_by_page = mlxsw_sp_get_module_eeprom_by_page,
.set_module_eeprom_by_page = mlxsw_sp_set_module_eeprom_by_page,
.get_ts_info = mlxsw_sp_get_ts_info,
.get_eth_phy_stats = mlxsw_sp_get_eth_phy_stats,
.get_eth_mac_stats = mlxsw_sp_get_eth_mac_stats,