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author | Saeed Mahameed <saeedm@mellanox.com> | 2014-10-27 11:37:36 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2014-10-28 17:18:00 -0400 |
commit | 7202da8b7f7131d25411d81aa557e28cd941c5b6 (patch) | |
tree | da2ee98f318805e4c40b580fc9d71fea6cbb0387 /drivers/net/ethernet/mellanox/mlx4 | |
parent | 32a173c7f9e9ec2b87142f67e1478cd20084a45b (diff) | |
download | op-kernel-dev-7202da8b7f7131d25411d81aa557e28cd941c5b6.zip op-kernel-dev-7202da8b7f7131d25411d81aa557e28cd941c5b6.tar.gz |
ethtool, net/mlx4_en: Cable info, get_module_info/eeprom ethtool support
Added support for get_module_info/get_module_eeprom ethtool support for cable info reading.
Added new cable types enum in include/uapi/linux/ethtool.h for ethtool use.
+#define ETH_MODULE_SFF_8636 0x3
+#define ETH_MODULE_SFF_8636_LEN 256
+#define ETH_MODULE_SFF_8436 0x4
+#define ETH_MODULE_SFF_8436_LEN 256
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c index ae83da9..279f423 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -35,6 +35,7 @@ #include <linux/ethtool.h> #include <linux/netdevice.h> #include <linux/mlx4/driver.h> +#include <linux/mlx4/device.h> #include <linux/in.h> #include <net/ip.h> @@ -1309,6 +1310,86 @@ static int mlx4_en_set_tunable(struct net_device *dev, return ret; } +static int mlx4_en_get_module_info(struct net_device *dev, + struct ethtool_modinfo *modinfo) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int ret; + u8 data[4]; + + /* Read first 2 bytes to get Module & REV ID */ + ret = mlx4_get_module_info(mdev->dev, priv->port, + 0/*offset*/, 2/*size*/, data); + if (ret < 2) + return -EIO; + + switch (data[0] /* identifier */) { + case MLX4_MODULE_ID_QSFP: + modinfo->type = ETH_MODULE_SFF_8436; + modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; + break; + case MLX4_MODULE_ID_QSFP_PLUS: + if (data[1] >= 0x3) { /* revision id */ + 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 MLX4_MODULE_ID_QSFP28: + modinfo->type = ETH_MODULE_SFF_8636; + modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; + break; + case MLX4_MODULE_ID_SFP: + modinfo->type = ETH_MODULE_SFF_8472; + modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; + break; + default: + return -ENOSYS; + } + + return 0; +} + +static int mlx4_en_get_module_eeprom(struct net_device *dev, + struct ethtool_eeprom *ee, + u8 *data) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int offset = ee->offset; + int i = 0, ret; + + if (ee->len == 0) + return -EINVAL; + + memset(data, 0, ee->len); + + while (i < ee->len) { + en_dbg(DRV, priv, + "mlx4_get_module_info i(%d) offset(%d) len(%d)\n", + i, offset, ee->len - i); + + ret = mlx4_get_module_info(mdev->dev, priv->port, + offset, ee->len - i, data + i); + + if (!ret) /* Done reading */ + return 0; + + if (ret < 0) { + en_err(priv, + "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n", + i, offset, ee->len - i, ret); + return 0; + } + + i += ret; + offset += ret; + } + return 0; +} const struct ethtool_ops mlx4_en_ethtool_ops = { .get_drvinfo = mlx4_en_get_drvinfo, @@ -1341,6 +1422,8 @@ const struct ethtool_ops mlx4_en_ethtool_ops = { .get_priv_flags = mlx4_en_get_priv_flags, .get_tunable = mlx4_en_get_tunable, .set_tunable = mlx4_en_set_tunable, + .get_module_info = mlx4_en_get_module_info, + .get_module_eeprom = mlx4_en_get_module_eeprom }; |