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net: ethernet: sun4i-emac: Allow to enable netif messages

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sun4i-emac has the ability to print a number of diagnostic messages using
dev_dbg depending on message level settings implemented using netif_msg_*
macros. But there's no way to actually enable them.

Add the ability to switch diagnostic messages on using either a module
parameter debug or ethtool -s <netif> msglvl <flags>.

Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Weiser 2016-11-14 18:58:06 +01:00 committed by David S. Miller
parent f8be0d78be
commit b8ca3387fe
1 changed files with 22 additions and 0 deletions
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22
drivers/net/ethernet/allwinner/sun4i-emac.c
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@ -37,6 +37,11 @@
#define EMAC_MAX_FRAME_LEN 0x0600
#define EMAC_DEFAULT_MSG_ENABLE 0x0000
static int debug = -1; /* defaults above */;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "debug message flags");
/* Transmit timeout, default 5 seconds. */
static int watchdog = 5000;
module_param(watchdog, int, 0400);
@ -225,11 +230,27 @@ static void emac_get_drvinfo(struct net_device *dev,
strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info));
}
static u32 emac_get_msglevel(struct net_device *dev)
{
struct emac_board_info *db = netdev_priv(dev);
return db->msg_enable;
}
static void emac_set_msglevel(struct net_device *dev, u32 value)
{
struct emac_board_info *db = netdev_priv(dev);
db->msg_enable = value;
}
static const struct ethtool_ops emac_ethtool_ops = {
.get_drvinfo = emac_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
.set_link_ksettings = phy_ethtool_set_link_ksettings,
.get_msglevel = emac_get_msglevel,
.set_msglevel = emac_set_msglevel,
};
static unsigned int emac_setup(struct net_device *ndev)
@ -804,6 +825,7 @@ static int emac_probe(struct platform_device *pdev)
db->dev = &pdev->dev;
db->ndev = ndev;
db->pdev = pdev;
db->msg_enable = netif_msg_init(debug, EMAC_DEFAULT_MSG_ENABLE);
spin_lock_init(&db->lock);