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stmmac_ethtool.c
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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 <[email protected]>
23 *******************************************************************************/
24 
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/interrupt.h>
28 #include <linux/mii.h>
29 #include <linux/phy.h>
30 #include <asm/io.h>
31 
32 #include "stmmac.h"
33 #include "dwmac_dma.h"
34 
35 #define REG_SPACE_SIZE 0x1054
36 #define MAC100_ETHTOOL_NAME "st_mac100"
37 #define GMAC_ETHTOOL_NAME "st_gmac"
38 
39 struct stmmac_stats {
43 };
44 
45 #define STMMAC_STAT(m) \
46  { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m), \
47  offsetof(struct stmmac_priv, xstats.m)}
48 
49 static const struct stmmac_stats stmmac_gstrings_stats[] = {
50  /* Transmit errors */
51  STMMAC_STAT(tx_underflow),
52  STMMAC_STAT(tx_carrier),
53  STMMAC_STAT(tx_losscarrier),
54  STMMAC_STAT(vlan_tag),
55  STMMAC_STAT(tx_deferred),
56  STMMAC_STAT(tx_vlan),
57  STMMAC_STAT(tx_jabber),
58  STMMAC_STAT(tx_frame_flushed),
59  STMMAC_STAT(tx_payload_error),
60  STMMAC_STAT(tx_ip_header_error),
61  /* Receive errors */
63  STMMAC_STAT(sa_filter_fail),
64  STMMAC_STAT(overflow_error),
65  STMMAC_STAT(ipc_csum_error),
66  STMMAC_STAT(rx_collision),
67  STMMAC_STAT(rx_crc),
68  STMMAC_STAT(dribbling_bit),
70  STMMAC_STAT(rx_mii),
71  STMMAC_STAT(rx_multicast),
72  STMMAC_STAT(rx_gmac_overflow),
73  STMMAC_STAT(rx_watchdog),
74  STMMAC_STAT(da_rx_filter_fail),
75  STMMAC_STAT(sa_rx_filter_fail),
76  STMMAC_STAT(rx_missed_cntr),
77  STMMAC_STAT(rx_overflow_cntr),
78  STMMAC_STAT(rx_vlan),
79  /* Tx/Rx IRQ errors */
80  STMMAC_STAT(tx_undeflow_irq),
81  STMMAC_STAT(tx_process_stopped_irq),
82  STMMAC_STAT(tx_jabber_irq),
83  STMMAC_STAT(rx_overflow_irq),
84  STMMAC_STAT(rx_buf_unav_irq),
85  STMMAC_STAT(rx_process_stopped_irq),
86  STMMAC_STAT(rx_watchdog_irq),
87  STMMAC_STAT(tx_early_irq),
88  STMMAC_STAT(fatal_bus_error_irq),
89  /* Extra info */
91  STMMAC_STAT(tx_pkt_n),
92  STMMAC_STAT(rx_pkt_n),
93  STMMAC_STAT(poll_n),
94  STMMAC_STAT(sched_timer_n),
95  STMMAC_STAT(normal_irq_n),
96  STMMAC_STAT(normal_irq_n),
97  STMMAC_STAT(mmc_tx_irq_n),
98  STMMAC_STAT(mmc_rx_irq_n),
99  STMMAC_STAT(mmc_rx_csum_offload_irq_n),
100  STMMAC_STAT(irq_receive_pmt_irq_n),
101  STMMAC_STAT(irq_tx_path_in_lpi_mode_n),
102  STMMAC_STAT(irq_tx_path_exit_lpi_mode_n),
103  STMMAC_STAT(irq_rx_path_in_lpi_mode_n),
104  STMMAC_STAT(irq_rx_path_exit_lpi_mode_n),
105  STMMAC_STAT(phy_eee_wakeup_error_n),
106 };
107 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
108 
109 /* HW MAC Management counters (if supported) */
110 #define STMMAC_MMC_STAT(m) \
111  { #m, FIELD_SIZEOF(struct stmmac_counters, m), \
112  offsetof(struct stmmac_priv, mmc.m)}
113 
114 static const struct stmmac_stats stmmac_mmc[] = {
115  STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
116  STMMAC_MMC_STAT(mmc_tx_framecount_gb),
117  STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
118  STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
119  STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
120  STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
121  STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
122  STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
123  STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
124  STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
125  STMMAC_MMC_STAT(mmc_tx_unicast_gb),
126  STMMAC_MMC_STAT(mmc_tx_multicast_gb),
127  STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
128  STMMAC_MMC_STAT(mmc_tx_underflow_error),
129  STMMAC_MMC_STAT(mmc_tx_singlecol_g),
130  STMMAC_MMC_STAT(mmc_tx_multicol_g),
131  STMMAC_MMC_STAT(mmc_tx_deferred),
132  STMMAC_MMC_STAT(mmc_tx_latecol),
133  STMMAC_MMC_STAT(mmc_tx_exesscol),
134  STMMAC_MMC_STAT(mmc_tx_carrier_error),
135  STMMAC_MMC_STAT(mmc_tx_octetcount_g),
136  STMMAC_MMC_STAT(mmc_tx_framecount_g),
137  STMMAC_MMC_STAT(mmc_tx_excessdef),
138  STMMAC_MMC_STAT(mmc_tx_pause_frame),
139  STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
140  STMMAC_MMC_STAT(mmc_rx_framecount_gb),
141  STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
142  STMMAC_MMC_STAT(mmc_rx_octetcount_g),
143  STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
144  STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
145  STMMAC_MMC_STAT(mmc_rx_crc_errror),
146  STMMAC_MMC_STAT(mmc_rx_align_error),
147  STMMAC_MMC_STAT(mmc_rx_run_error),
148  STMMAC_MMC_STAT(mmc_rx_jabber_error),
149  STMMAC_MMC_STAT(mmc_rx_undersize_g),
150  STMMAC_MMC_STAT(mmc_rx_oversize_g),
151  STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
152  STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
153  STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
154  STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
155  STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
156  STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
157  STMMAC_MMC_STAT(mmc_rx_unicast_g),
158  STMMAC_MMC_STAT(mmc_rx_length_error),
159  STMMAC_MMC_STAT(mmc_rx_autofrangetype),
160  STMMAC_MMC_STAT(mmc_rx_pause_frames),
161  STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
162  STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
163  STMMAC_MMC_STAT(mmc_rx_watchdog_error),
164  STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
165  STMMAC_MMC_STAT(mmc_rx_ipc_intr),
166  STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
167  STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
168  STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
169  STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
170  STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
171  STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
172  STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
173  STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
174  STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
175  STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
176  STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
177  STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
178  STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
179  STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
180  STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
181  STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
182  STMMAC_MMC_STAT(mmc_rx_udp_gd),
183  STMMAC_MMC_STAT(mmc_rx_udp_err),
184  STMMAC_MMC_STAT(mmc_rx_tcp_gd),
185  STMMAC_MMC_STAT(mmc_rx_tcp_err),
186  STMMAC_MMC_STAT(mmc_rx_icmp_gd),
187  STMMAC_MMC_STAT(mmc_rx_icmp_err),
188  STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
189  STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
190  STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
191  STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
192  STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
193  STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
194 };
195 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
196 
197 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
198  struct ethtool_drvinfo *info)
199 {
200  struct stmmac_priv *priv = netdev_priv(dev);
201 
202  if (priv->plat->has_gmac)
203  strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
204  else
206  sizeof(info->driver));
207 
209  info->fw_version[0] = '\0';
210 }
211 
212 static int stmmac_ethtool_getsettings(struct net_device *dev,
213  struct ethtool_cmd *cmd)
214 {
215  struct stmmac_priv *priv = netdev_priv(dev);
216  struct phy_device *phy = priv->phydev;
217  int rc;
218  if (phy == NULL) {
219  pr_err("%s: %s: PHY is not registered\n",
220  __func__, dev->name);
221  return -ENODEV;
222  }
223  if (!netif_running(dev)) {
224  pr_err("%s: interface is disabled: we cannot track "
225  "link speed / duplex setting\n", dev->name);
226  return -EBUSY;
227  }
228  cmd->transceiver = XCVR_INTERNAL;
229  spin_lock_irq(&priv->lock);
230  rc = phy_ethtool_gset(phy, cmd);
231  spin_unlock_irq(&priv->lock);
232  return rc;
233 }
234 
235 static int stmmac_ethtool_setsettings(struct net_device *dev,
236  struct ethtool_cmd *cmd)
237 {
238  struct stmmac_priv *priv = netdev_priv(dev);
239  struct phy_device *phy = priv->phydev;
240  int rc;
241 
242  spin_lock(&priv->lock);
243  rc = phy_ethtool_sset(phy, cmd);
244  spin_unlock(&priv->lock);
245 
246  return rc;
247 }
248 
249 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
250 {
251  struct stmmac_priv *priv = netdev_priv(dev);
252  return priv->msg_enable;
253 }
254 
255 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
256 {
257  struct stmmac_priv *priv = netdev_priv(dev);
258  priv->msg_enable = level;
259 
260 }
261 
262 static int stmmac_check_if_running(struct net_device *dev)
263 {
264  if (!netif_running(dev))
265  return -EBUSY;
266  return 0;
267 }
268 
269 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
270 {
271  return REG_SPACE_SIZE;
272 }
273 
274 static void stmmac_ethtool_gregs(struct net_device *dev,
275  struct ethtool_regs *regs, void *space)
276 {
277  int i;
278  u32 *reg_space = (u32 *) space;
279 
280  struct stmmac_priv *priv = netdev_priv(dev);
281 
282  memset(reg_space, 0x0, REG_SPACE_SIZE);
283 
284  if (!priv->plat->has_gmac) {
285  /* MAC registers */
286  for (i = 0; i < 12; i++)
287  reg_space[i] = readl(priv->ioaddr + (i * 4));
288  /* DMA registers */
289  for (i = 0; i < 9; i++)
290  reg_space[i + 12] =
291  readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
292  reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
293  reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
294  } else {
295  /* MAC registers */
296  for (i = 0; i < 55; i++)
297  reg_space[i] = readl(priv->ioaddr + (i * 4));
298  /* DMA registers */
299  for (i = 0; i < 22; i++)
300  reg_space[i + 55] =
301  readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
302  }
303 }
304 
305 static void
306 stmmac_get_pauseparam(struct net_device *netdev,
307  struct ethtool_pauseparam *pause)
308 {
309  struct stmmac_priv *priv = netdev_priv(netdev);
310 
311  spin_lock(&priv->lock);
312 
313  pause->rx_pause = 0;
314  pause->tx_pause = 0;
315  pause->autoneg = priv->phydev->autoneg;
316 
317  if (priv->flow_ctrl & FLOW_RX)
318  pause->rx_pause = 1;
319  if (priv->flow_ctrl & FLOW_TX)
320  pause->tx_pause = 1;
321 
322  spin_unlock(&priv->lock);
323 }
324 
325 static int
326 stmmac_set_pauseparam(struct net_device *netdev,
327  struct ethtool_pauseparam *pause)
328 {
329  struct stmmac_priv *priv = netdev_priv(netdev);
330  struct phy_device *phy = priv->phydev;
331  int new_pause = FLOW_OFF;
332  int ret = 0;
333 
334  spin_lock(&priv->lock);
335 
336  if (pause->rx_pause)
337  new_pause |= FLOW_RX;
338  if (pause->tx_pause)
339  new_pause |= FLOW_TX;
340 
341  priv->flow_ctrl = new_pause;
342  phy->autoneg = pause->autoneg;
343 
344  if (phy->autoneg) {
345  if (netif_running(netdev))
346  ret = phy_start_aneg(phy);
347  } else
348  priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
349  priv->flow_ctrl, priv->pause);
350  spin_unlock(&priv->lock);
351  return ret;
352 }
353 
354 static void stmmac_get_ethtool_stats(struct net_device *dev,
355  struct ethtool_stats *dummy, u64 *data)
356 {
357  struct stmmac_priv *priv = netdev_priv(dev);
358  int i, j = 0;
359 
360  /* Update the DMA HW counters for dwmac10/100 */
361  if (!priv->plat->has_gmac)
362  priv->hw->dma->dma_diagnostic_fr(&dev->stats,
363  (void *) &priv->xstats,
364  priv->ioaddr);
365  else {
366  /* If supported, for new GMAC chips expose the MMC counters */
367  if (priv->dma_cap.rmon) {
368  dwmac_mmc_read(priv->ioaddr, &priv->mmc);
369 
370  for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
371  char *p;
372  p = (char *)priv + stmmac_mmc[i].stat_offset;
373 
374  data[j++] = (stmmac_mmc[i].sizeof_stat ==
375  sizeof(u64)) ? (*(u64 *)p) :
376  (*(u32 *)p);
377  }
378  }
379  if (priv->eee_enabled) {
380  int val = phy_get_eee_err(priv->phydev);
381  if (val)
382  priv->xstats.phy_eee_wakeup_error_n = val;
383  }
384  }
385  for (i = 0; i < STMMAC_STATS_LEN; i++) {
386  char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
387  data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
388  sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
389  }
390 }
391 
392 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
393 {
394  struct stmmac_priv *priv = netdev_priv(netdev);
395  int len;
396 
397  switch (sset) {
398  case ETH_SS_STATS:
399  len = STMMAC_STATS_LEN;
400 
401  if (priv->dma_cap.rmon)
402  len += STMMAC_MMC_STATS_LEN;
403 
404  return len;
405  default:
406  return -EOPNOTSUPP;
407  }
408 }
409 
410 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
411 {
412  int i;
413  u8 *p = data;
414  struct stmmac_priv *priv = netdev_priv(dev);
415 
416  switch (stringset) {
417  case ETH_SS_STATS:
418  if (priv->dma_cap.rmon)
419  for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
420  memcpy(p, stmmac_mmc[i].stat_string,
422  p += ETH_GSTRING_LEN;
423  }
424  for (i = 0; i < STMMAC_STATS_LEN; i++) {
425  memcpy(p, stmmac_gstrings_stats[i].stat_string,
427  p += ETH_GSTRING_LEN;
428  }
429  break;
430  default:
431  WARN_ON(1);
432  break;
433  }
434 }
435 
436 /* Currently only support WOL through Magic packet. */
437 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
438 {
439  struct stmmac_priv *priv = netdev_priv(dev);
440 
441  spin_lock_irq(&priv->lock);
442  if (device_can_wakeup(priv->device)) {
444  wol->wolopts = priv->wolopts;
445  }
446  spin_unlock_irq(&priv->lock);
447 }
448 
449 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
450 {
451  struct stmmac_priv *priv = netdev_priv(dev);
453 
454  /* By default almost all GMAC devices support the WoL via
455  * magic frame but we can disable it if the HW capability
456  * register shows no support for pmt_magic_frame. */
457  if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
458  wol->wolopts &= ~WAKE_MAGIC;
459 
460  if (!device_can_wakeup(priv->device))
461  return -EINVAL;
462 
463  if (wol->wolopts & ~support)
464  return -EINVAL;
465 
466  if (wol->wolopts) {
467  pr_info("stmmac: wakeup enable\n");
469  enable_irq_wake(priv->wol_irq);
470  } else {
472  disable_irq_wake(priv->wol_irq);
473  }
474 
475  spin_lock_irq(&priv->lock);
476  priv->wolopts = wol->wolopts;
477  spin_unlock_irq(&priv->lock);
478 
479  return 0;
480 }
481 
482 static int stmmac_ethtool_op_get_eee(struct net_device *dev,
483  struct ethtool_eee *edata)
484 {
485  struct stmmac_priv *priv = netdev_priv(dev);
486 
487  if (!priv->dma_cap.eee)
488  return -EOPNOTSUPP;
489 
490  edata->eee_enabled = priv->eee_enabled;
491  edata->eee_active = priv->eee_active;
492  edata->tx_lpi_timer = priv->tx_lpi_timer;
493 
494  return phy_ethtool_get_eee(priv->phydev, edata);
495 }
496 
497 static int stmmac_ethtool_op_set_eee(struct net_device *dev,
498  struct ethtool_eee *edata)
499 {
500  struct stmmac_priv *priv = netdev_priv(dev);
501 
502  priv->eee_enabled = edata->eee_enabled;
503 
504  if (!priv->eee_enabled)
506  else {
507  /* We are asking for enabling the EEE but it is safe
508  * to verify all by invoking the eee_init function.
509  * In case of failure it will return an error.
510  */
511  priv->eee_enabled = stmmac_eee_init(priv);
512  if (!priv->eee_enabled)
513  return -EOPNOTSUPP;
514 
515  /* Do not change tx_lpi_timer in case of failure */
516  priv->tx_lpi_timer = edata->tx_lpi_timer;
517  }
518 
519  return phy_ethtool_set_eee(priv->phydev, edata);
520 }
521 
522 static const struct ethtool_ops stmmac_ethtool_ops = {
523  .begin = stmmac_check_if_running,
524  .get_drvinfo = stmmac_ethtool_getdrvinfo,
525  .get_settings = stmmac_ethtool_getsettings,
526  .set_settings = stmmac_ethtool_setsettings,
527  .get_msglevel = stmmac_ethtool_getmsglevel,
528  .set_msglevel = stmmac_ethtool_setmsglevel,
529  .get_regs = stmmac_ethtool_gregs,
530  .get_regs_len = stmmac_ethtool_get_regs_len,
531  .get_link = ethtool_op_get_link,
532  .get_pauseparam = stmmac_get_pauseparam,
533  .set_pauseparam = stmmac_set_pauseparam,
534  .get_ethtool_stats = stmmac_get_ethtool_stats,
535  .get_strings = stmmac_get_strings,
536  .get_wol = stmmac_get_wol,
537  .set_wol = stmmac_set_wol,
538  .get_eee = stmmac_ethtool_op_get_eee,
539  .set_eee = stmmac_ethtool_op_set_eee,
540  .get_sset_count = stmmac_get_sset_count,
541  .get_ts_info = ethtool_op_get_ts_info,
542 };
543 
544 void stmmac_set_ethtool_ops(struct net_device *netdev)
545 {
546  SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
547 }