f98e1511660fe7c2136d345d7efa0bb12e05dec2
[linux-2.6.git] / drivers / net / ethernet / stmicro / stmmac / stmmac_ethtool.c
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/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 {
40         char stat_string[ETH_GSTRING_LEN];
41         int sizeof_stat;
42         int stat_offset;
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 */
62         STMMAC_STAT(rx_desc),
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),
69         STMMAC_STAT(rx_length),
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 */
90         STMMAC_STAT(threshold),
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 };
97 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
98
99 /* HW MAC Management counters (if supported) */
100 #define STMMAC_MMC_STAT(m)      \
101         { #m, FIELD_SIZEOF(struct stmmac_counters, m),  \
102         offsetof(struct stmmac_priv, mmc.m)}
103
104 static const struct stmmac_stats stmmac_mmc[] = {
105         STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
106         STMMAC_MMC_STAT(mmc_tx_framecount_gb),
107         STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
108         STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
109         STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
110         STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
111         STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
112         STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
113         STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
114         STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
115         STMMAC_MMC_STAT(mmc_tx_unicast_gb),
116         STMMAC_MMC_STAT(mmc_tx_multicast_gb),
117         STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
118         STMMAC_MMC_STAT(mmc_tx_underflow_error),
119         STMMAC_MMC_STAT(mmc_tx_singlecol_g),
120         STMMAC_MMC_STAT(mmc_tx_multicol_g),
121         STMMAC_MMC_STAT(mmc_tx_deferred),
122         STMMAC_MMC_STAT(mmc_tx_latecol),
123         STMMAC_MMC_STAT(mmc_tx_exesscol),
124         STMMAC_MMC_STAT(mmc_tx_carrier_error),
125         STMMAC_MMC_STAT(mmc_tx_octetcount_g),
126         STMMAC_MMC_STAT(mmc_tx_framecount_g),
127         STMMAC_MMC_STAT(mmc_tx_excessdef),
128         STMMAC_MMC_STAT(mmc_tx_pause_frame),
129         STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
130         STMMAC_MMC_STAT(mmc_rx_framecount_gb),
131         STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
132         STMMAC_MMC_STAT(mmc_rx_octetcount_g),
133         STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
134         STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
135         STMMAC_MMC_STAT(mmc_rx_crc_errror),
136         STMMAC_MMC_STAT(mmc_rx_align_error),
137         STMMAC_MMC_STAT(mmc_rx_run_error),
138         STMMAC_MMC_STAT(mmc_rx_jabber_error),
139         STMMAC_MMC_STAT(mmc_rx_undersize_g),
140         STMMAC_MMC_STAT(mmc_rx_oversize_g),
141         STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
142         STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
143         STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
144         STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
145         STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
146         STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
147         STMMAC_MMC_STAT(mmc_rx_unicast_g),
148         STMMAC_MMC_STAT(mmc_rx_length_error),
149         STMMAC_MMC_STAT(mmc_rx_autofrangetype),
150         STMMAC_MMC_STAT(mmc_rx_pause_frames),
151         STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
152         STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
153         STMMAC_MMC_STAT(mmc_rx_watchdog_error),
154         STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
155         STMMAC_MMC_STAT(mmc_rx_ipc_intr),
156         STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
157         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
158         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
159         STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
160         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
161         STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
162         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
163         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
164         STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
165         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
166         STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
167         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
168         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
169         STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
170         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
171         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
172         STMMAC_MMC_STAT(mmc_rx_udp_gd),
173         STMMAC_MMC_STAT(mmc_rx_udp_err),
174         STMMAC_MMC_STAT(mmc_rx_tcp_gd),
175         STMMAC_MMC_STAT(mmc_rx_tcp_err),
176         STMMAC_MMC_STAT(mmc_rx_icmp_gd),
177         STMMAC_MMC_STAT(mmc_rx_icmp_err),
178         STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
179         STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
180         STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
181         STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
182         STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
183         STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
184 };
185 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
186
187 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
188                                       struct ethtool_drvinfo *info)
189 {
190         struct stmmac_priv *priv = netdev_priv(dev);
191
192         if (priv->plat->has_gmac)
193                 strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
194         else
195                 strlcpy(info->driver, MAC100_ETHTOOL_NAME,
196                         sizeof(info->driver));
197
198         strcpy(info->version, DRV_MODULE_VERSION);
199         info->fw_version[0] = '\0';
200 }
201
202 static int stmmac_ethtool_getsettings(struct net_device *dev,
203                                       struct ethtool_cmd *cmd)
204 {
205         struct stmmac_priv *priv = netdev_priv(dev);
206         struct phy_device *phy = priv->phydev;
207         int rc;
208         if (phy == NULL) {
209                 pr_err("%s: %s: PHY is not registered\n",
210                        __func__, dev->name);
211                 return -ENODEV;
212         }
213         if (!netif_running(dev)) {
214                 pr_err("%s: interface is disabled: we cannot track "
215                 "link speed / duplex setting\n", dev->name);
216                 return -EBUSY;
217         }
218         cmd->transceiver = XCVR_INTERNAL;
219         spin_lock_irq(&priv->lock);
220         rc = phy_ethtool_gset(phy, cmd);
221         spin_unlock_irq(&priv->lock);
222         return rc;
223 }
224
225 static int stmmac_ethtool_setsettings(struct net_device *dev,
226                                       struct ethtool_cmd *cmd)
227 {
228         struct stmmac_priv *priv = netdev_priv(dev);
229         struct phy_device *phy = priv->phydev;
230         int rc;
231
232         spin_lock(&priv->lock);
233         rc = phy_ethtool_sset(phy, cmd);
234         spin_unlock(&priv->lock);
235
236         return rc;
237 }
238
239 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
240 {
241         struct stmmac_priv *priv = netdev_priv(dev);
242         return priv->msg_enable;
243 }
244
245 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
246 {
247         struct stmmac_priv *priv = netdev_priv(dev);
248         priv->msg_enable = level;
249
250 }
251
252 static int stmmac_check_if_running(struct net_device *dev)
253 {
254         if (!netif_running(dev))
255                 return -EBUSY;
256         return 0;
257 }
258
259 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
260 {
261         return REG_SPACE_SIZE;
262 }
263
264 static void stmmac_ethtool_gregs(struct net_device *dev,
265                           struct ethtool_regs *regs, void *space)
266 {
267         int i;
268         u32 *reg_space = (u32 *) space;
269
270         struct stmmac_priv *priv = netdev_priv(dev);
271
272         memset(reg_space, 0x0, REG_SPACE_SIZE);
273
274         if (!priv->plat->has_gmac) {
275                 /* MAC registers */
276                 for (i = 0; i < 12; i++)
277                         reg_space[i] = readl(priv->ioaddr + (i * 4));
278                 /* DMA registers */
279                 for (i = 0; i < 9; i++)
280                         reg_space[i + 12] =
281                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
282                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
283                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
284         } else {
285                 /* MAC registers */
286                 for (i = 0; i < 55; i++)
287                         reg_space[i] = readl(priv->ioaddr + (i * 4));
288                 /* DMA registers */
289                 for (i = 0; i < 22; i++)
290                         reg_space[i + 55] =
291                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
292         }
293 }
294
295 static void
296 stmmac_get_pauseparam(struct net_device *netdev,
297                       struct ethtool_pauseparam *pause)
298 {
299         struct stmmac_priv *priv = netdev_priv(netdev);
300
301         spin_lock(&priv->lock);
302
303         pause->rx_pause = 0;
304         pause->tx_pause = 0;
305         pause->autoneg = priv->phydev->autoneg;
306
307         if (priv->flow_ctrl & FLOW_RX)
308                 pause->rx_pause = 1;
309         if (priv->flow_ctrl & FLOW_TX)
310                 pause->tx_pause = 1;
311
312         spin_unlock(&priv->lock);
313 }
314
315 static int
316 stmmac_set_pauseparam(struct net_device *netdev,
317                       struct ethtool_pauseparam *pause)
318 {
319         struct stmmac_priv *priv = netdev_priv(netdev);
320         struct phy_device *phy = priv->phydev;
321         int new_pause = FLOW_OFF;
322         int ret = 0;
323
324         spin_lock(&priv->lock);
325
326         if (pause->rx_pause)
327                 new_pause |= FLOW_RX;
328         if (pause->tx_pause)
329                 new_pause |= FLOW_TX;
330
331         priv->flow_ctrl = new_pause;
332         phy->autoneg = pause->autoneg;
333
334         if (phy->autoneg) {
335                 if (netif_running(netdev))
336                         ret = phy_start_aneg(phy);
337         } else
338                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
339                                          priv->flow_ctrl, priv->pause);
340         spin_unlock(&priv->lock);
341         return ret;
342 }
343
344 static void stmmac_get_ethtool_stats(struct net_device *dev,
345                                  struct ethtool_stats *dummy, u64 *data)
346 {
347         struct stmmac_priv *priv = netdev_priv(dev);
348         int i, j = 0;
349
350         /* Update the DMA HW counters for dwmac10/100 */
351         if (!priv->plat->has_gmac)
352                 priv->hw->dma->dma_diagnostic_fr(&dev->stats,
353                                                  (void *) &priv->xstats,
354                                                  priv->ioaddr);
355         else {
356                 /* If supported, for new GMAC chips expose the MMC counters */
357                 if (priv->dma_cap.rmon) {
358                         dwmac_mmc_read(priv->ioaddr, &priv->mmc);
359
360                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
361                                 char *p;
362                                 p = (char *)priv + stmmac_mmc[i].stat_offset;
363
364                                 data[j++] = (stmmac_mmc[i].sizeof_stat ==
365                                              sizeof(u64)) ? (*(u64 *)p) :
366                                              (*(u32 *)p);
367                         }
368                 }
369         }
370         for (i = 0; i < STMMAC_STATS_LEN; i++) {
371                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
372                 data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
373                              sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
374         }
375 }
376
377 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
378 {
379         struct stmmac_priv *priv = netdev_priv(netdev);
380         int len;
381
382         switch (sset) {
383         case ETH_SS_STATS:
384                 len = STMMAC_STATS_LEN;
385
386                 if (priv->dma_cap.rmon)
387                         len += STMMAC_MMC_STATS_LEN;
388
389                 return len;
390         default:
391                 return -EOPNOTSUPP;
392         }
393 }
394
395 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
396 {
397         int i;
398         u8 *p = data;
399         struct stmmac_priv *priv = netdev_priv(dev);
400
401         switch (stringset) {
402         case ETH_SS_STATS:
403                 if (priv->dma_cap.rmon)
404                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
405                                 memcpy(p, stmmac_mmc[i].stat_string,
406                                        ETH_GSTRING_LEN);
407                                 p += ETH_GSTRING_LEN;
408                         }
409                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
410                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
411                                 ETH_GSTRING_LEN);
412                         p += ETH_GSTRING_LEN;
413                 }
414                 break;
415         default:
416                 WARN_ON(1);
417                 break;
418         }
419 }
420
421 /* Currently only support WOL through Magic packet. */
422 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
423 {
424         struct stmmac_priv *priv = netdev_priv(dev);
425
426         spin_lock_irq(&priv->lock);
427         if (device_can_wakeup(priv->device)) {
428                 wol->supported = WAKE_MAGIC | WAKE_UCAST;
429                 wol->wolopts = priv->wolopts;
430         }
431         spin_unlock_irq(&priv->lock);
432 }
433
434 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
435 {
436         struct stmmac_priv *priv = netdev_priv(dev);
437         u32 support = WAKE_MAGIC | WAKE_UCAST;
438
439         /* By default almost all GMAC devices support the WoL via
440          * magic frame but we can disable it if the HW capability
441          * register shows no support for pmt_magic_frame. */
442         if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
443                 wol->wolopts &= ~WAKE_MAGIC;
444
445         if (!device_can_wakeup(priv->device))
446                 return -EINVAL;
447
448         if (wol->wolopts & ~support)
449                 return -EINVAL;
450
451         if (wol->wolopts) {
452                 pr_info("stmmac: wakeup enable\n");
453                 device_set_wakeup_enable(priv->device, 1);
454                 enable_irq_wake(priv->wol_irq);
455         } else {
456                 device_set_wakeup_enable(priv->device, 0);
457                 disable_irq_wake(priv->wol_irq);
458         }
459
460         spin_lock_irq(&priv->lock);
461         priv->wolopts = wol->wolopts;
462         spin_unlock_irq(&priv->lock);
463
464         return 0;
465 }
466
467 static const struct ethtool_ops stmmac_ethtool_ops = {
468         .begin = stmmac_check_if_running,
469         .get_drvinfo = stmmac_ethtool_getdrvinfo,
470         .get_settings = stmmac_ethtool_getsettings,
471         .set_settings = stmmac_ethtool_setsettings,
472         .get_msglevel = stmmac_ethtool_getmsglevel,
473         .set_msglevel = stmmac_ethtool_setmsglevel,
474         .get_regs = stmmac_ethtool_gregs,
475         .get_regs_len = stmmac_ethtool_get_regs_len,
476         .get_link = ethtool_op_get_link,
477         .get_pauseparam = stmmac_get_pauseparam,
478         .set_pauseparam = stmmac_set_pauseparam,
479         .get_ethtool_stats = stmmac_get_ethtool_stats,
480         .get_strings = stmmac_get_strings,
481         .get_wol = stmmac_get_wol,
482         .set_wol = stmmac_set_wol,
483         .get_sset_count = stmmac_get_sset_count,
484 };
485
486 void stmmac_set_ethtool_ops(struct net_device *netdev)
487 {
488         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
489 }