Merge branch 'for-next' into for-linus
[linux-2.6.git] / drivers / net / 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/mii.h>
28 #include <linux/phy.h>
29
30 #include "stmmac.h"
31
32 #define REG_SPACE_SIZE  0x1054
33 #define MAC100_ETHTOOL_NAME     "st_mac100"
34 #define GMAC_ETHTOOL_NAME       "st_gmac"
35
36 struct stmmac_stats {
37         char stat_string[ETH_GSTRING_LEN];
38         int sizeof_stat;
39         int stat_offset;
40 };
41
42 #define STMMAC_STAT(m)  \
43         { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m),       \
44         offsetof(struct stmmac_priv, xstats.m)}
45
46 static const struct  stmmac_stats stmmac_gstrings_stats[] = {
47         STMMAC_STAT(tx_underflow),
48         STMMAC_STAT(tx_carrier),
49         STMMAC_STAT(tx_losscarrier),
50         STMMAC_STAT(tx_heartbeat),
51         STMMAC_STAT(tx_deferred),
52         STMMAC_STAT(tx_vlan),
53         STMMAC_STAT(rx_vlan),
54         STMMAC_STAT(tx_jabber),
55         STMMAC_STAT(tx_frame_flushed),
56         STMMAC_STAT(tx_payload_error),
57         STMMAC_STAT(tx_ip_header_error),
58         STMMAC_STAT(rx_desc),
59         STMMAC_STAT(rx_partial),
60         STMMAC_STAT(rx_runt),
61         STMMAC_STAT(rx_toolong),
62         STMMAC_STAT(rx_collision),
63         STMMAC_STAT(rx_crc),
64         STMMAC_STAT(rx_lenght),
65         STMMAC_STAT(rx_mii),
66         STMMAC_STAT(rx_multicast),
67         STMMAC_STAT(rx_gmac_overflow),
68         STMMAC_STAT(rx_watchdog),
69         STMMAC_STAT(da_rx_filter_fail),
70         STMMAC_STAT(sa_rx_filter_fail),
71         STMMAC_STAT(rx_missed_cntr),
72         STMMAC_STAT(rx_overflow_cntr),
73         STMMAC_STAT(tx_undeflow_irq),
74         STMMAC_STAT(tx_process_stopped_irq),
75         STMMAC_STAT(tx_jabber_irq),
76         STMMAC_STAT(rx_overflow_irq),
77         STMMAC_STAT(rx_buf_unav_irq),
78         STMMAC_STAT(rx_process_stopped_irq),
79         STMMAC_STAT(rx_watchdog_irq),
80         STMMAC_STAT(tx_early_irq),
81         STMMAC_STAT(fatal_bus_error_irq),
82         STMMAC_STAT(threshold),
83         STMMAC_STAT(tx_pkt_n),
84         STMMAC_STAT(rx_pkt_n),
85         STMMAC_STAT(poll_n),
86         STMMAC_STAT(sched_timer_n),
87         STMMAC_STAT(normal_irq_n),
88 };
89 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
90
91 void stmmac_ethtool_getdrvinfo(struct net_device *dev,
92                                struct ethtool_drvinfo *info)
93 {
94         struct stmmac_priv *priv = netdev_priv(dev);
95
96         if (!priv->is_gmac)
97                 strcpy(info->driver, MAC100_ETHTOOL_NAME);
98         else
99                 strcpy(info->driver, GMAC_ETHTOOL_NAME);
100
101         strcpy(info->version, DRV_MODULE_VERSION);
102         info->fw_version[0] = '\0';
103         info->n_stats = STMMAC_STATS_LEN;
104         return;
105 }
106
107 int stmmac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
108 {
109         struct stmmac_priv *priv = netdev_priv(dev);
110         struct phy_device *phy = priv->phydev;
111         int rc;
112         if (phy == NULL) {
113                 pr_err("%s: %s: PHY is not registered\n",
114                        __func__, dev->name);
115                 return -ENODEV;
116         }
117         if (!netif_running(dev)) {
118                 pr_err("%s: interface is disabled: we cannot track "
119                 "link speed / duplex setting\n", dev->name);
120                 return -EBUSY;
121         }
122         cmd->transceiver = XCVR_INTERNAL;
123         spin_lock_irq(&priv->lock);
124         rc = phy_ethtool_gset(phy, cmd);
125         spin_unlock_irq(&priv->lock);
126         return rc;
127 }
128
129 int stmmac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
130 {
131         struct stmmac_priv *priv = netdev_priv(dev);
132         struct phy_device *phy = priv->phydev;
133         int rc;
134
135         spin_lock(&priv->lock);
136         rc = phy_ethtool_sset(phy, cmd);
137         spin_unlock(&priv->lock);
138
139         return rc;
140 }
141
142 u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
143 {
144         struct stmmac_priv *priv = netdev_priv(dev);
145         return priv->msg_enable;
146 }
147
148 void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
149 {
150         struct stmmac_priv *priv = netdev_priv(dev);
151         priv->msg_enable = level;
152
153 }
154
155 int stmmac_check_if_running(struct net_device *dev)
156 {
157         if (!netif_running(dev))
158                 return -EBUSY;
159         return 0;
160 }
161
162 int stmmac_ethtool_get_regs_len(struct net_device *dev)
163 {
164         return REG_SPACE_SIZE;
165 }
166
167 void stmmac_ethtool_gregs(struct net_device *dev,
168                           struct ethtool_regs *regs, void *space)
169 {
170         int i;
171         u32 *reg_space = (u32 *) space;
172
173         struct stmmac_priv *priv = netdev_priv(dev);
174
175         memset(reg_space, 0x0, REG_SPACE_SIZE);
176
177         if (!priv->is_gmac) {
178                 /* MAC registers */
179                 for (i = 0; i < 12; i++)
180                         reg_space[i] = readl(dev->base_addr + (i * 4));
181                 /* DMA registers */
182                 for (i = 0; i < 9; i++)
183                         reg_space[i + 12] =
184                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
185                 reg_space[22] = readl(dev->base_addr + DMA_CUR_TX_BUF_ADDR);
186                 reg_space[23] = readl(dev->base_addr + DMA_CUR_RX_BUF_ADDR);
187         } else {
188                 /* MAC registers */
189                 for (i = 0; i < 55; i++)
190                         reg_space[i] = readl(dev->base_addr + (i * 4));
191                 /* DMA registers */
192                 for (i = 0; i < 22; i++)
193                         reg_space[i + 55] =
194                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
195         }
196
197         return;
198 }
199
200 int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
201 {
202         if (data)
203                 netdev->features |= NETIF_F_HW_CSUM;
204         else
205                 netdev->features &= ~NETIF_F_HW_CSUM;
206
207         return 0;
208 }
209
210 u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
211 {
212         struct stmmac_priv *priv = netdev_priv(dev);
213
214         return priv->rx_csum;
215 }
216
217 static void
218 stmmac_get_pauseparam(struct net_device *netdev,
219                       struct ethtool_pauseparam *pause)
220 {
221         struct stmmac_priv *priv = netdev_priv(netdev);
222
223         spin_lock(&priv->lock);
224
225         pause->rx_pause = 0;
226         pause->tx_pause = 0;
227         pause->autoneg = priv->phydev->autoneg;
228
229         if (priv->flow_ctrl & FLOW_RX)
230                 pause->rx_pause = 1;
231         if (priv->flow_ctrl & FLOW_TX)
232                 pause->tx_pause = 1;
233
234         spin_unlock(&priv->lock);
235         return;
236 }
237
238 static int
239 stmmac_set_pauseparam(struct net_device *netdev,
240                       struct ethtool_pauseparam *pause)
241 {
242         struct stmmac_priv *priv = netdev_priv(netdev);
243         struct phy_device *phy = priv->phydev;
244         int new_pause = FLOW_OFF;
245         int ret = 0;
246
247         spin_lock(&priv->lock);
248
249         if (pause->rx_pause)
250                 new_pause |= FLOW_RX;
251         if (pause->tx_pause)
252                 new_pause |= FLOW_TX;
253
254         priv->flow_ctrl = new_pause;
255
256         if (phy->autoneg) {
257                 if (netif_running(netdev)) {
258                         struct ethtool_cmd cmd;
259                         /* auto-negotiation automatically restarted */
260                         cmd.cmd = ETHTOOL_NWAY_RST;
261                         cmd.supported = phy->supported;
262                         cmd.advertising = phy->advertising;
263                         cmd.autoneg = phy->autoneg;
264                         cmd.speed = phy->speed;
265                         cmd.duplex = phy->duplex;
266                         cmd.phy_address = phy->addr;
267                         ret = phy_ethtool_sset(phy, &cmd);
268                 }
269         } else {
270                 unsigned long ioaddr = netdev->base_addr;
271                 priv->mac_type->ops->flow_ctrl(ioaddr, phy->duplex,
272                                                priv->flow_ctrl, priv->pause);
273         }
274         spin_unlock(&priv->lock);
275         return ret;
276 }
277
278 static void stmmac_get_ethtool_stats(struct net_device *dev,
279                                  struct ethtool_stats *dummy, u64 *data)
280 {
281         struct stmmac_priv *priv = netdev_priv(dev);
282         unsigned long ioaddr = dev->base_addr;
283         int i;
284
285         /* Update HW stats if supported */
286         priv->mac_type->ops->dma_diagnostic_fr(&dev->stats, &priv->xstats,
287                                                ioaddr);
288
289         for (i = 0; i < STMMAC_STATS_LEN; i++) {
290                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
291                 data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
292                 sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
293         }
294
295         return;
296 }
297
298 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
299 {
300         switch (sset) {
301         case ETH_SS_STATS:
302                 return STMMAC_STATS_LEN;
303         default:
304                 return -EOPNOTSUPP;
305         }
306 }
307
308 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
309 {
310         int i;
311         u8 *p = data;
312
313         switch (stringset) {
314         case ETH_SS_STATS:
315                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
316                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
317                                 ETH_GSTRING_LEN);
318                         p += ETH_GSTRING_LEN;
319                 }
320                 break;
321         default:
322                 WARN_ON(1);
323                 break;
324         }
325         return;
326 }
327
328 /* Currently only support WOL through Magic packet. */
329 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
330 {
331         struct stmmac_priv *priv = netdev_priv(dev);
332
333         spin_lock_irq(&priv->lock);
334         if (priv->wolenabled == PMT_SUPPORTED) {
335                 wol->supported = WAKE_MAGIC;
336                 wol->wolopts = priv->wolopts;
337         }
338         spin_unlock_irq(&priv->lock);
339 }
340
341 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
342 {
343         struct stmmac_priv *priv = netdev_priv(dev);
344         u32 support = WAKE_MAGIC;
345
346         if (priv->wolenabled == PMT_NOT_SUPPORTED)
347                 return -EINVAL;
348
349         if (wol->wolopts & ~support)
350                 return -EINVAL;
351
352         if (wol->wolopts == 0)
353                 device_set_wakeup_enable(priv->device, 0);
354         else
355                 device_set_wakeup_enable(priv->device, 1);
356
357         spin_lock_irq(&priv->lock);
358         priv->wolopts = wol->wolopts;
359         spin_unlock_irq(&priv->lock);
360
361         return 0;
362 }
363
364 static struct ethtool_ops stmmac_ethtool_ops = {
365         .begin = stmmac_check_if_running,
366         .get_drvinfo = stmmac_ethtool_getdrvinfo,
367         .get_settings = stmmac_ethtool_getsettings,
368         .set_settings = stmmac_ethtool_setsettings,
369         .get_msglevel = stmmac_ethtool_getmsglevel,
370         .set_msglevel = stmmac_ethtool_setmsglevel,
371         .get_regs = stmmac_ethtool_gregs,
372         .get_regs_len = stmmac_ethtool_get_regs_len,
373         .get_link = ethtool_op_get_link,
374         .get_rx_csum = stmmac_ethtool_get_rx_csum,
375         .get_tx_csum = ethtool_op_get_tx_csum,
376         .set_tx_csum = stmmac_ethtool_set_tx_csum,
377         .get_sg = ethtool_op_get_sg,
378         .set_sg = ethtool_op_set_sg,
379         .get_pauseparam = stmmac_get_pauseparam,
380         .set_pauseparam = stmmac_set_pauseparam,
381         .get_ethtool_stats = stmmac_get_ethtool_stats,
382         .get_strings = stmmac_get_strings,
383         .get_wol = stmmac_get_wol,
384         .set_wol = stmmac_set_wol,
385         .get_sset_count = stmmac_get_sset_count,
386 #ifdef NETIF_F_TSO
387         .get_tso = ethtool_op_get_tso,
388         .set_tso = ethtool_op_set_tso,
389 #endif
390 };
391
392 void stmmac_set_ethtool_ops(struct net_device *netdev)
393 {
394         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
395 }