2 * Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
4 * This file is free software: you may copy, redistribute and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation, either version 2 of the License, or (at your
7 * option) any later version.
9 * This file is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 * This file incorporates work covered by the following copyright and
20 * Copyright (c) 2012 Qualcomm Atheros, Inc.
22 * Permission to use, copy, modify, and/or distribute this software for any
23 * purpose with or without fee is hereby granted, provided that the above
24 * copyright notice and this permission notice appear in all copies.
26 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
27 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
28 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
29 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
30 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
31 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
32 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
35 #include <linux/pci.h>
37 #include <linux/tcp.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/mdio.h>
42 #include <linux/interrupt.h>
43 #include <asm/byteorder.h>
49 /* The order of these strings must match the order of the fields in
53 static const char alx_gstrings_stats[][ETH_GSTRING_LEN] = {
64 "rx_64B_or_less_packets",
65 "rx_65B_to_127B_packets",
66 "rx_128B_to_255B_packets",
67 "rx_256B_to_511B_packets",
68 "rx_512B_to_1023B_packets",
69 "rx_1024B_to_1518B_packets",
70 "rx_1519B_to_mtu_packets",
71 "rx_oversize_packets",
72 "rx_rxf_ov_drop_packets",
73 "rx_rrd_ov_drop_packets",
82 "tx_exc_defer_packets",
86 "tx_64B_or_less_packets",
87 "tx_65B_to_127B_packets",
88 "tx_128B_to_255B_packets",
89 "tx_256B_to_511B_packets",
90 "tx_512B_to_1023B_packets",
91 "tx_1024B_to_1518B_packets",
92 "tx_1519B_to_mtu_packets",
93 "tx_single_collision",
94 "tx_multiple_collisions",
106 #define ALX_NUM_STATS ARRAY_SIZE(alx_gstrings_stats)
109 static u32 alx_get_supported_speeds(struct alx_hw *hw)
111 u32 supported = SUPPORTED_10baseT_Half |
112 SUPPORTED_10baseT_Full |
113 SUPPORTED_100baseT_Half |
114 SUPPORTED_100baseT_Full;
117 supported |= SUPPORTED_1000baseT_Full;
119 BUILD_BUG_ON(SUPPORTED_10baseT_Half != ADVERTISED_10baseT_Half);
120 BUILD_BUG_ON(SUPPORTED_10baseT_Full != ADVERTISED_10baseT_Full);
121 BUILD_BUG_ON(SUPPORTED_100baseT_Half != ADVERTISED_100baseT_Half);
122 BUILD_BUG_ON(SUPPORTED_100baseT_Full != ADVERTISED_100baseT_Full);
123 BUILD_BUG_ON(SUPPORTED_1000baseT_Full != ADVERTISED_1000baseT_Full);
128 static int alx_get_link_ksettings(struct net_device *netdev,
129 struct ethtool_link_ksettings *cmd)
131 struct alx_priv *alx = netdev_priv(netdev);
132 struct alx_hw *hw = &alx->hw;
133 u32 supported, advertising;
135 supported = SUPPORTED_Autoneg |
138 SUPPORTED_Asym_Pause;
140 supported |= SUPPORTED_1000baseT_Full;
141 supported |= alx_get_supported_speeds(hw);
143 advertising = ADVERTISED_TP;
144 if (hw->adv_cfg & ADVERTISED_Autoneg)
145 advertising |= hw->adv_cfg;
147 cmd->base.port = PORT_TP;
148 cmd->base.phy_address = 0;
150 if (hw->adv_cfg & ADVERTISED_Autoneg)
151 cmd->base.autoneg = AUTONEG_ENABLE;
153 cmd->base.autoneg = AUTONEG_DISABLE;
155 if (hw->flowctrl & ALX_FC_ANEG && hw->adv_cfg & ADVERTISED_Autoneg) {
156 if (hw->flowctrl & ALX_FC_RX) {
157 advertising |= ADVERTISED_Pause;
159 if (!(hw->flowctrl & ALX_FC_TX))
160 advertising |= ADVERTISED_Asym_Pause;
161 } else if (hw->flowctrl & ALX_FC_TX) {
162 advertising |= ADVERTISED_Asym_Pause;
166 mutex_lock(&alx->mtx);
167 cmd->base.speed = hw->link_speed;
168 cmd->base.duplex = hw->duplex;
169 mutex_unlock(&alx->mtx);
171 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
173 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
179 static int alx_set_link_ksettings(struct net_device *netdev,
180 const struct ethtool_link_ksettings *cmd)
182 struct alx_priv *alx = netdev_priv(netdev);
183 struct alx_hw *hw = &alx->hw;
188 ethtool_convert_link_mode_to_legacy_u32(&advertising,
189 cmd->link_modes.advertising);
191 if (cmd->base.autoneg == AUTONEG_ENABLE) {
192 if (advertising & ~alx_get_supported_speeds(hw))
194 adv_cfg = advertising | ADVERTISED_Autoneg;
196 adv_cfg = alx_speed_to_ethadv(cmd->base.speed,
199 if (!adv_cfg || adv_cfg == ADVERTISED_1000baseT_Full)
203 hw->adv_cfg = adv_cfg;
205 mutex_lock(&alx->mtx);
206 ret = alx_setup_speed_duplex(hw, adv_cfg, hw->flowctrl);
207 mutex_unlock(&alx->mtx);
212 static void alx_get_pauseparam(struct net_device *netdev,
213 struct ethtool_pauseparam *pause)
215 struct alx_priv *alx = netdev_priv(netdev);
216 struct alx_hw *hw = &alx->hw;
218 mutex_lock(&alx->mtx);
219 pause->autoneg = !!(hw->flowctrl & ALX_FC_ANEG &&
220 hw->adv_cfg & ADVERTISED_Autoneg);
221 pause->tx_pause = !!(hw->flowctrl & ALX_FC_TX);
222 pause->rx_pause = !!(hw->flowctrl & ALX_FC_RX);
223 mutex_unlock(&alx->mtx);
227 static int alx_set_pauseparam(struct net_device *netdev,
228 struct ethtool_pauseparam *pause)
230 struct alx_priv *alx = netdev_priv(netdev);
231 struct alx_hw *hw = &alx->hw;
233 bool reconfig_phy = false;
243 mutex_lock(&alx->mtx);
245 /* restart auto-neg for auto-mode */
246 if (hw->adv_cfg & ADVERTISED_Autoneg) {
247 if (!((fc ^ hw->flowctrl) & ALX_FC_ANEG))
249 if (fc & hw->flowctrl & ALX_FC_ANEG &&
250 (fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
255 err = alx_setup_speed_duplex(hw, hw->adv_cfg, fc);
257 mutex_unlock(&alx->mtx);
262 /* flow control on mac */
263 if ((fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
264 alx_cfg_mac_flowcontrol(hw, fc);
267 mutex_unlock(&alx->mtx);
272 static u32 alx_get_msglevel(struct net_device *netdev)
274 struct alx_priv *alx = netdev_priv(netdev);
276 return alx->msg_enable;
279 static void alx_set_msglevel(struct net_device *netdev, u32 data)
281 struct alx_priv *alx = netdev_priv(netdev);
283 alx->msg_enable = data;
286 static void alx_get_ethtool_stats(struct net_device *netdev,
287 struct ethtool_stats *estats, u64 *data)
289 struct alx_priv *alx = netdev_priv(netdev);
290 struct alx_hw *hw = &alx->hw;
292 spin_lock(&alx->stats_lock);
294 alx_update_hw_stats(hw);
295 BUILD_BUG_ON(sizeof(hw->stats) != ALX_NUM_STATS * sizeof(u64));
296 memcpy(data, &hw->stats, sizeof(hw->stats));
298 spin_unlock(&alx->stats_lock);
301 static void alx_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
305 memcpy(buf, &alx_gstrings_stats, sizeof(alx_gstrings_stats));
313 static int alx_get_sset_count(struct net_device *netdev, int sset)
317 return ALX_NUM_STATS;
323 const struct ethtool_ops alx_ethtool_ops = {
324 .get_pauseparam = alx_get_pauseparam,
325 .set_pauseparam = alx_set_pauseparam,
326 .get_msglevel = alx_get_msglevel,
327 .set_msglevel = alx_set_msglevel,
328 .get_link = ethtool_op_get_link,
329 .get_strings = alx_get_strings,
330 .get_sset_count = alx_get_sset_count,
331 .get_ethtool_stats = alx_get_ethtool_stats,
332 .get_link_ksettings = alx_get_link_ksettings,
333 .set_link_ksettings = alx_set_link_ksettings,