1 /*******************************************************************************
2 STMMAC Ethtool support
3
4 Copyright (C) 2007-2009 STMicroelectronics Ltd
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
23 *******************************************************************************/
24
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/mii.h>
28 #include <linux/phy.h>
29
30 #include "stmmac.h"
31 #include "dwmac_dma.h"
32
33 #define REG_SPACE_SIZE 0x1054
34 #define MAC100_ETHTOOL_NAME "st_mac100"
35 #define GMAC_ETHTOOL_NAME "st_gmac"
36
37 struct stmmac_stats {
38 char stat_string[ETH_GSTRING_LEN];
39 int sizeof_stat;
40 int stat_offset;
41 };
42
43 #define STMMAC_STAT(m) \
44 { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m), \
45 offsetof(struct stmmac_priv, xstats.m)}
46
47 static const struct stmmac_stats stmmac_gstrings_stats[] = {
48 STMMAC_STAT(tx_underflow),
49 STMMAC_STAT(tx_carrier),
50 STMMAC_STAT(tx_losscarrier),
51 STMMAC_STAT(tx_heartbeat),
52 STMMAC_STAT(tx_deferred),
53 STMMAC_STAT(tx_vlan),
54 STMMAC_STAT(rx_vlan),
55 STMMAC_STAT(tx_jabber),
56 STMMAC_STAT(tx_frame_flushed),
57 STMMAC_STAT(tx_payload_error),
58 STMMAC_STAT(tx_ip_header_error),
59 STMMAC_STAT(rx_desc),
60 STMMAC_STAT(rx_partial),
61 STMMAC_STAT(rx_runt),
62 STMMAC_STAT(rx_toolong),
63 STMMAC_STAT(rx_collision),
64 STMMAC_STAT(rx_crc),
65 STMMAC_STAT(rx_length),
66 STMMAC_STAT(rx_mii),
67 STMMAC_STAT(rx_multicast),
68 STMMAC_STAT(rx_gmac_overflow),
69 STMMAC_STAT(rx_watchdog),
70 STMMAC_STAT(da_rx_filter_fail),
71 STMMAC_STAT(sa_rx_filter_fail),
72 STMMAC_STAT(rx_missed_cntr),
73 STMMAC_STAT(rx_overflow_cntr),
74 STMMAC_STAT(tx_undeflow_irq),
75 STMMAC_STAT(tx_process_stopped_irq),
76 STMMAC_STAT(tx_jabber_irq),
77 STMMAC_STAT(rx_overflow_irq),
78 STMMAC_STAT(rx_buf_unav_irq),
79 STMMAC_STAT(rx_process_stopped_irq),
80 STMMAC_STAT(rx_watchdog_irq),
81 STMMAC_STAT(tx_early_irq),
82 STMMAC_STAT(fatal_bus_error_irq),
83 STMMAC_STAT(threshold),
84 STMMAC_STAT(tx_pkt_n),
85 STMMAC_STAT(rx_pkt_n),
86 STMMAC_STAT(poll_n),
87 STMMAC_STAT(sched_timer_n),
88 STMMAC_STAT(normal_irq_n),
89 };
90 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
91
stmmac_ethtool_getdrvinfo(struct net_device * dev,struct ethtool_drvinfo * info)92 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
93 struct ethtool_drvinfo *info)
94 {
95 struct stmmac_priv *priv = netdev_priv(dev);
96
97 if (!priv->plat->has_gmac)
98 strcpy(info->driver, MAC100_ETHTOOL_NAME);
99 else
100 strcpy(info->driver, GMAC_ETHTOOL_NAME);
101
102 strcpy(info->version, DRV_MODULE_VERSION);
103 info->fw_version[0] = '\0';
104 info->n_stats = STMMAC_STATS_LEN;
105 }
106
stmmac_ethtool_getsettings(struct net_device * dev,struct ethtool_cmd * cmd)107 static int stmmac_ethtool_getsettings(struct net_device *dev,
108 struct ethtool_cmd *cmd)
109 {
110 struct stmmac_priv *priv = netdev_priv(dev);
111 struct phy_device *phy = priv->phydev;
112 int rc;
113 if (phy == NULL) {
114 pr_err("%s: %s: PHY is not registered\n",
115 __func__, dev->name);
116 return -ENODEV;
117 }
118 if (!netif_running(dev)) {
119 pr_err("%s: interface is disabled: we cannot track "
120 "link speed / duplex setting\n", dev->name);
121 return -EBUSY;
122 }
123 cmd->transceiver = XCVR_INTERNAL;
124 spin_lock_irq(&priv->lock);
125 rc = phy_ethtool_gset(phy, cmd);
126 spin_unlock_irq(&priv->lock);
127 return rc;
128 }
129
stmmac_ethtool_setsettings(struct net_device * dev,struct ethtool_cmd * cmd)130 static int stmmac_ethtool_setsettings(struct net_device *dev,
131 struct ethtool_cmd *cmd)
132 {
133 struct stmmac_priv *priv = netdev_priv(dev);
134 struct phy_device *phy = priv->phydev;
135 int rc;
136
137 spin_lock(&priv->lock);
138 rc = phy_ethtool_sset(phy, cmd);
139 spin_unlock(&priv->lock);
140
141 return rc;
142 }
143
stmmac_ethtool_getmsglevel(struct net_device * dev)144 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
145 {
146 struct stmmac_priv *priv = netdev_priv(dev);
147 return priv->msg_enable;
148 }
149
stmmac_ethtool_setmsglevel(struct net_device * dev,u32 level)150 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
151 {
152 struct stmmac_priv *priv = netdev_priv(dev);
153 priv->msg_enable = level;
154
155 }
156
stmmac_check_if_running(struct net_device * dev)157 static int stmmac_check_if_running(struct net_device *dev)
158 {
159 if (!netif_running(dev))
160 return -EBUSY;
161 return 0;
162 }
163
stmmac_ethtool_get_regs_len(struct net_device * dev)164 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
165 {
166 return REG_SPACE_SIZE;
167 }
168
stmmac_ethtool_gregs(struct net_device * dev,struct ethtool_regs * regs,void * space)169 static void stmmac_ethtool_gregs(struct net_device *dev,
170 struct ethtool_regs *regs, void *space)
171 {
172 int i;
173 u32 *reg_space = (u32 *) space;
174
175 struct stmmac_priv *priv = netdev_priv(dev);
176
177 memset(reg_space, 0x0, REG_SPACE_SIZE);
178
179 if (!priv->plat->has_gmac) {
180 /* MAC registers */
181 for (i = 0; i < 12; i++)
182 reg_space[i] = readl(priv->ioaddr + (i * 4));
183 /* DMA registers */
184 for (i = 0; i < 9; i++)
185 reg_space[i + 12] =
186 readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
187 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
188 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
189 } else {
190 /* MAC registers */
191 for (i = 0; i < 55; i++)
192 reg_space[i] = readl(priv->ioaddr + (i * 4));
193 /* DMA registers */
194 for (i = 0; i < 22; i++)
195 reg_space[i + 55] =
196 readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
197 }
198 }
199
stmmac_ethtool_get_rx_csum(struct net_device * dev)200 static u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
201 {
202 struct stmmac_priv *priv = netdev_priv(dev);
203
204 return priv->rx_coe;
205 }
206
207 static void
stmmac_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)208 stmmac_get_pauseparam(struct net_device *netdev,
209 struct ethtool_pauseparam *pause)
210 {
211 struct stmmac_priv *priv = netdev_priv(netdev);
212
213 spin_lock(&priv->lock);
214
215 pause->rx_pause = 0;
216 pause->tx_pause = 0;
217 pause->autoneg = priv->phydev->autoneg;
218
219 if (priv->flow_ctrl & FLOW_RX)
220 pause->rx_pause = 1;
221 if (priv->flow_ctrl & FLOW_TX)
222 pause->tx_pause = 1;
223
224 spin_unlock(&priv->lock);
225 }
226
227 static int
stmmac_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)228 stmmac_set_pauseparam(struct net_device *netdev,
229 struct ethtool_pauseparam *pause)
230 {
231 struct stmmac_priv *priv = netdev_priv(netdev);
232 struct phy_device *phy = priv->phydev;
233 int new_pause = FLOW_OFF;
234 int ret = 0;
235
236 spin_lock(&priv->lock);
237
238 if (pause->rx_pause)
239 new_pause |= FLOW_RX;
240 if (pause->tx_pause)
241 new_pause |= FLOW_TX;
242
243 priv->flow_ctrl = new_pause;
244
245 if (phy->autoneg) {
246 if (netif_running(netdev)) {
247 struct ethtool_cmd cmd;
248 /* auto-negotiation automatically restarted */
249 cmd.cmd = ETHTOOL_NWAY_RST;
250 cmd.supported = phy->supported;
251 cmd.advertising = phy->advertising;
252 cmd.autoneg = phy->autoneg;
253 cmd.speed = phy->speed;
254 cmd.duplex = phy->duplex;
255 cmd.phy_address = phy->addr;
256 ret = phy_ethtool_sset(phy, &cmd);
257 }
258 } else
259 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
260 priv->flow_ctrl, priv->pause);
261 spin_unlock(&priv->lock);
262 return ret;
263 }
264
stmmac_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * dummy,u64 * data)265 static void stmmac_get_ethtool_stats(struct net_device *dev,
266 struct ethtool_stats *dummy, u64 *data)
267 {
268 struct stmmac_priv *priv = netdev_priv(dev);
269 int i;
270
271 /* Update HW stats if supported */
272 priv->hw->dma->dma_diagnostic_fr(&dev->stats, (void *) &priv->xstats,
273 priv->ioaddr);
274
275 for (i = 0; i < STMMAC_STATS_LEN; i++) {
276 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
277 data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
278 sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
279 }
280 }
281
stmmac_get_sset_count(struct net_device * netdev,int sset)282 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
283 {
284 switch (sset) {
285 case ETH_SS_STATS:
286 return STMMAC_STATS_LEN;
287 default:
288 return -EOPNOTSUPP;
289 }
290 }
291
stmmac_get_strings(struct net_device * dev,u32 stringset,u8 * data)292 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
293 {
294 int i;
295 u8 *p = data;
296
297 switch (stringset) {
298 case ETH_SS_STATS:
299 for (i = 0; i < STMMAC_STATS_LEN; i++) {
300 memcpy(p, stmmac_gstrings_stats[i].stat_string,
301 ETH_GSTRING_LEN);
302 p += ETH_GSTRING_LEN;
303 }
304 break;
305 default:
306 WARN_ON(1);
307 break;
308 }
309 }
310
311 /* Currently only support WOL through Magic packet. */
stmmac_get_wol(struct net_device * dev,struct ethtool_wolinfo * wol)312 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
313 {
314 struct stmmac_priv *priv = netdev_priv(dev);
315
316 spin_lock_irq(&priv->lock);
317 if (device_can_wakeup(priv->device)) {
318 wol->supported = WAKE_MAGIC;
319 wol->wolopts = priv->wolopts;
320 }
321 spin_unlock_irq(&priv->lock);
322 }
323
stmmac_set_wol(struct net_device * dev,struct ethtool_wolinfo * wol)324 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
325 {
326 struct stmmac_priv *priv = netdev_priv(dev);
327 u32 support = WAKE_MAGIC;
328
329 if (!device_can_wakeup(priv->device))
330 return -EINVAL;
331
332 if (wol->wolopts & ~support)
333 return -EINVAL;
334
335 if (wol->wolopts) {
336 pr_info("stmmac: wakeup enable\n");
337 device_set_wakeup_enable(priv->device, 1);
338 enable_irq_wake(dev->irq);
339 } else {
340 device_set_wakeup_enable(priv->device, 0);
341 disable_irq_wake(dev->irq);
342 }
343
344 spin_lock_irq(&priv->lock);
345 priv->wolopts = wol->wolopts;
346 spin_unlock_irq(&priv->lock);
347
348 return 0;
349 }
350
351 static struct ethtool_ops stmmac_ethtool_ops = {
352 .begin = stmmac_check_if_running,
353 .get_drvinfo = stmmac_ethtool_getdrvinfo,
354 .get_settings = stmmac_ethtool_getsettings,
355 .set_settings = stmmac_ethtool_setsettings,
356 .get_msglevel = stmmac_ethtool_getmsglevel,
357 .set_msglevel = stmmac_ethtool_setmsglevel,
358 .get_regs = stmmac_ethtool_gregs,
359 .get_regs_len = stmmac_ethtool_get_regs_len,
360 .get_link = ethtool_op_get_link,
361 .get_rx_csum = stmmac_ethtool_get_rx_csum,
362 .get_tx_csum = ethtool_op_get_tx_csum,
363 .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
364 .get_sg = ethtool_op_get_sg,
365 .set_sg = ethtool_op_set_sg,
366 .get_pauseparam = stmmac_get_pauseparam,
367 .set_pauseparam = stmmac_set_pauseparam,
368 .get_ethtool_stats = stmmac_get_ethtool_stats,
369 .get_strings = stmmac_get_strings,
370 .get_wol = stmmac_get_wol,
371 .set_wol = stmmac_set_wol,
372 .get_sset_count = stmmac_get_sset_count,
373 .get_tso = ethtool_op_get_tso,
374 .set_tso = ethtool_op_set_tso,
375 };
376
stmmac_set_ethtool_ops(struct net_device * netdev)377 void stmmac_set_ethtool_ops(struct net_device *netdev)
378 {
379 SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
380 }
381