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_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
130 struct alx_priv *alx = netdev_priv(netdev);
131 struct alx_hw *hw = &alx->hw;
133 ecmd->supported = SUPPORTED_Autoneg |
136 SUPPORTED_Asym_Pause;
138 ecmd->supported |= SUPPORTED_1000baseT_Full;
139 ecmd->supported |= alx_get_supported_speeds(hw);
141 ecmd->advertising = ADVERTISED_TP;
142 if (hw->adv_cfg & ADVERTISED_Autoneg)
143 ecmd->advertising |= hw->adv_cfg;
145 ecmd->port = PORT_TP;
146 ecmd->phy_address = 0;
148 if (hw->adv_cfg & ADVERTISED_Autoneg)
149 ecmd->autoneg = AUTONEG_ENABLE;
151 ecmd->autoneg = AUTONEG_DISABLE;
152 ecmd->transceiver = XCVR_INTERNAL;
154 if (hw->flowctrl & ALX_FC_ANEG && hw->adv_cfg & ADVERTISED_Autoneg) {
155 if (hw->flowctrl & ALX_FC_RX) {
156 ecmd->advertising |= ADVERTISED_Pause;
158 if (!(hw->flowctrl & ALX_FC_TX))
159 ecmd->advertising |= ADVERTISED_Asym_Pause;
160 } else if (hw->flowctrl & ALX_FC_TX) {
161 ecmd->advertising |= ADVERTISED_Asym_Pause;
165 ethtool_cmd_speed_set(ecmd, hw->link_speed);
166 ecmd->duplex = hw->duplex;
171 static int alx_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
173 struct alx_priv *alx = netdev_priv(netdev);
174 struct alx_hw *hw = &alx->hw;
179 if (ecmd->autoneg == AUTONEG_ENABLE) {
180 if (ecmd->advertising & ~alx_get_supported_speeds(hw))
182 adv_cfg = ecmd->advertising | ADVERTISED_Autoneg;
184 adv_cfg = alx_speed_to_ethadv(ethtool_cmd_speed(ecmd),
187 if (!adv_cfg || adv_cfg == ADVERTISED_1000baseT_Full)
191 hw->adv_cfg = adv_cfg;
192 return alx_setup_speed_duplex(hw, adv_cfg, hw->flowctrl);
195 static void alx_get_pauseparam(struct net_device *netdev,
196 struct ethtool_pauseparam *pause)
198 struct alx_priv *alx = netdev_priv(netdev);
199 struct alx_hw *hw = &alx->hw;
201 pause->autoneg = !!(hw->flowctrl & ALX_FC_ANEG &&
202 hw->adv_cfg & ADVERTISED_Autoneg);
203 pause->tx_pause = !!(hw->flowctrl & ALX_FC_TX);
204 pause->rx_pause = !!(hw->flowctrl & ALX_FC_RX);
208 static int alx_set_pauseparam(struct net_device *netdev,
209 struct ethtool_pauseparam *pause)
211 struct alx_priv *alx = netdev_priv(netdev);
212 struct alx_hw *hw = &alx->hw;
214 bool reconfig_phy = false;
226 /* restart auto-neg for auto-mode */
227 if (hw->adv_cfg & ADVERTISED_Autoneg) {
228 if (!((fc ^ hw->flowctrl) & ALX_FC_ANEG))
230 if (fc & hw->flowctrl & ALX_FC_ANEG &&
231 (fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
236 err = alx_setup_speed_duplex(hw, hw->adv_cfg, fc);
241 /* flow control on mac */
242 if ((fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
243 alx_cfg_mac_flowcontrol(hw, fc);
250 static u32 alx_get_msglevel(struct net_device *netdev)
252 struct alx_priv *alx = netdev_priv(netdev);
254 return alx->msg_enable;
257 static void alx_set_msglevel(struct net_device *netdev, u32 data)
259 struct alx_priv *alx = netdev_priv(netdev);
261 alx->msg_enable = data;
264 static void alx_get_ethtool_stats(struct net_device *netdev,
265 struct ethtool_stats *estats, u64 *data)
267 struct alx_priv *alx = netdev_priv(netdev);
268 struct alx_hw *hw = &alx->hw;
270 spin_lock(&alx->stats_lock);
272 alx_update_hw_stats(hw);
273 BUILD_BUG_ON(sizeof(hw->stats) - offsetof(struct alx_hw_stats, rx_ok) <
274 ALX_NUM_STATS * sizeof(u64));
275 memcpy(data, &hw->stats.rx_ok, ALX_NUM_STATS * sizeof(u64));
277 spin_unlock(&alx->stats_lock);
280 static void alx_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
284 memcpy(buf, &alx_gstrings_stats, sizeof(alx_gstrings_stats));
292 static int alx_get_sset_count(struct net_device *netdev, int sset)
296 return ALX_NUM_STATS;
302 const struct ethtool_ops alx_ethtool_ops = {
303 .get_settings = alx_get_settings,
304 .set_settings = alx_set_settings,
305 .get_pauseparam = alx_get_pauseparam,
306 .set_pauseparam = alx_set_pauseparam,
307 .get_msglevel = alx_get_msglevel,
308 .set_msglevel = alx_set_msglevel,
309 .get_link = ethtool_op_get_link,
310 .get_strings = alx_get_strings,
311 .get_sset_count = alx_get_sset_count,
312 .get_ethtool_stats = alx_get_ethtool_stats,