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