netdev - [PATCH net-next 1/8] mlxsw: i2c: Extend initialization with querying firmware info

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Date:   Wed, 29 May 2019 11:47:15 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jiri@...lanox.com, vadimp@...lanox.com,
        mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 1/8] mlxsw: i2c: Extend initialization with querying firmware info

From: Vadim Pasternak <vadimp@...lanox.com>

Extend initialization flow with query request for firmware info in
order to obtain firmware version info.
This info is to be provided to minimal driver to support ethtool
get_drvinfo() interface.

Signed-off-by: Vadim Pasternak <vadimp@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/i2c.c     | 12 ++++++++++++
 drivers/net/ethernet/mellanox/mlxsw/minimal.c | 18 ++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index 06aea1999518..803ce9623205 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -509,8 +509,20 @@ mlxsw_i2c_init(void *bus_priv, struct mlxsw_core *mlxsw_core,
 	if (!mbox)
 		return -ENOMEM;
 
+	err = mlxsw_cmd_query_fw(mlxsw_core, mbox);
+	if (err)
+		goto mbox_put;
+
+	mlxsw_i2c->bus_info.fw_rev.major =
+		mlxsw_cmd_mbox_query_fw_fw_rev_major_get(mbox);
+	mlxsw_i2c->bus_info.fw_rev.minor =
+		mlxsw_cmd_mbox_query_fw_fw_rev_minor_get(mbox);
+	mlxsw_i2c->bus_info.fw_rev.subminor =
+		mlxsw_cmd_mbox_query_fw_fw_rev_subminor_get(mbox);
+
 	err = mlxsw_core_resources_query(mlxsw_core, mbox, res);
 
+mbox_put:
 	mlxsw_cmd_mbox_free(mbox);
 	return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index cf2114273b72..471b0ca6d69a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -67,6 +67,23 @@ static const struct net_device_ops mlxsw_m_port_netdev_ops = {
 	.ndo_get_devlink_port	= mlxsw_m_port_get_devlink_port,
 };
 
+static void mlxsw_m_module_get_drvinfo(struct net_device *dev,
+				       struct ethtool_drvinfo *drvinfo)
+{
+	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
+	struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+
+	strlcpy(drvinfo->driver, mlxsw_m->bus_info->device_kind,
+		sizeof(drvinfo->driver));
+	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+		 "%d.%d.%d",
+		 mlxsw_m->bus_info->fw_rev.major,
+		 mlxsw_m->bus_info->fw_rev.minor,
+		 mlxsw_m->bus_info->fw_rev.subminor);
+	strlcpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name,
+		sizeof(drvinfo->bus_info));
+}
+
 static int mlxsw_m_get_module_info(struct net_device *netdev,
 				   struct ethtool_modinfo *modinfo)
 {
@@ -88,6 +105,7 @@ mlxsw_m_get_module_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee,
 }
 
 static const struct ethtool_ops mlxsw_m_port_ethtool_ops = {
+	.get_drvinfo		= mlxsw_m_module_get_drvinfo,
 	.get_module_info	= mlxsw_m_get_module_info,
 	.get_module_eeprom	= mlxsw_m_get_module_eeprom,
 };
-- 
2.20.1