diff options
| author | Taku Izumi <izumi.taku@jp.fujitsu.com> | 2016-10-14 20:27:45 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-14 12:04:57 -0400 |
| commit | b6ba737d0b290b272452a2362088222a248fc8da (patch) | |
| tree | 8b4fdafab65ef761d6052461d0848386c8c389de /drivers/net/fjes/fjes_ethtool.c | |
| parent | 82f6aea801e3732fe4bf41af46ebe352bf24fde8 (diff) | |
| download | linux-b6ba737d0b290b272452a2362088222a248fc8da.tar.bz2 | |
fjes: ethtool -w and -W support for fjes driver
This patch adds implementation of supporting
ethtool -w and -W for fjes driver.
You can enable and disable firmware debug mode by
using ethtool -W, and also retrieve firmware
activity information by using ethtool -w.
This is useful for debugging.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fjes/fjes_ethtool.c')
| -rw-r--r-- | drivers/net/fjes/fjes_ethtool.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes_ethtool.c b/drivers/net/fjes/fjes_ethtool.c index 68ef28709c98..6575f880f1be 100644 --- a/drivers/net/fjes/fjes_ethtool.c +++ b/drivers/net/fjes/fjes_ethtool.c @@ -235,6 +235,66 @@ static void fjes_get_regs(struct net_device *netdev, regs_buff[36] = rd32(XSCT_ICTL); } +static int fjes_set_dump(struct net_device *netdev, struct ethtool_dump *dump) +{ + struct fjes_adapter *adapter = netdev_priv(netdev); + struct fjes_hw *hw = &adapter->hw; + int ret = 0; + + if (dump->flag) { + if (hw->debug_mode) + return -EPERM; + + hw->debug_mode = dump->flag; + + /* enable debug mode */ + mutex_lock(&hw->hw_info.lock); + ret = fjes_hw_start_debug(hw); + mutex_unlock(&hw->hw_info.lock); + + if (ret) + hw->debug_mode = 0; + } else { + if (!hw->debug_mode) + return -EPERM; + + /* disable debug mode */ + mutex_lock(&hw->hw_info.lock); + ret = fjes_hw_stop_debug(hw); + mutex_unlock(&hw->hw_info.lock); + } + + return ret; +} + +static int fjes_get_dump_flag(struct net_device *netdev, + struct ethtool_dump *dump) +{ + struct fjes_adapter *adapter = netdev_priv(netdev); + struct fjes_hw *hw = &adapter->hw; + + dump->len = hw->hw_info.trace_size; + dump->version = 1; + dump->flag = hw->debug_mode; + + return 0; +} + +static int fjes_get_dump_data(struct net_device *netdev, + struct ethtool_dump *dump, void *buf) +{ + struct fjes_adapter *adapter = netdev_priv(netdev); + struct fjes_hw *hw = &adapter->hw; + int ret = 0; + + if (hw->hw_info.trace) + memcpy(buf, hw->hw_info.trace, hw->hw_info.trace_size); + else + ret = -EPERM; + + return ret; +} + static const struct ethtool_ops fjes_ethtool_ops = { .get_settings = fjes_get_settings, .get_drvinfo = fjes_get_drvinfo, @@ -243,6 +303,9 @@ static const struct ethtool_ops fjes_ethtool_ops = { .get_sset_count = fjes_get_sset_count, .get_regs = fjes_get_regs, .get_regs_len = fjes_get_regs_len, + .set_dump = fjes_set_dump, + .get_dump_flag = fjes_get_dump_flag, + .get_dump_data = fjes_get_dump_data, }; void fjes_set_ethtool_ops(struct net_device *netdev) |