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ehea_ethtool.c
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1 /*
2  * linux/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
3  *
4  * eHEA ethernet device driver for IBM eServer System p
5  *
6  * (C) Copyright IBM Corp. 2006
7  *
8  * Authors:
9  * Christoph Raisch <[email protected]>
10  * Jan-Bernd Themann <[email protected]>
11  * Thomas Klein <[email protected]>
12  *
13  *
14  * This program is free software; you can redistribute it and/or modify
15  * it under the terms of the GNU General Public License as published by
16  * the Free Software Foundation; either version 2, or (at your option)
17  * any later version.
18  *
19  * This program is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22  * GNU General Public License for more details.
23  *
24  * You should have received a copy of the GNU General Public License
25  * along with this program; if not, write to the Free Software
26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27  */
28 
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 
31 #include "ehea.h"
32 #include "ehea_phyp.h"
33 
34 static int ehea_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
35 {
36  struct ehea_port *port = netdev_priv(dev);
37  u32 speed;
38  int ret;
39 
40  ret = ehea_sense_port_attr(port);
41 
42  if (ret)
43  return ret;
44 
45  if (netif_carrier_ok(dev)) {
46  switch (port->port_speed) {
47  case EHEA_SPEED_10M:
48  speed = SPEED_10;
49  break;
50  case EHEA_SPEED_100M:
51  speed = SPEED_100;
52  break;
53  case EHEA_SPEED_1G:
54  speed = SPEED_1000;
55  break;
56  case EHEA_SPEED_10G:
57  speed = SPEED_10000;
58  break;
59  default:
60  speed = -1;
61  break; /* BUG */
62  }
63  cmd->duplex = port->full_duplex == 1 ?
64  DUPLEX_FULL : DUPLEX_HALF;
65  } else {
66  speed = ~0;
67  cmd->duplex = -1;
68  }
69  ethtool_cmd_speed_set(cmd, speed);
70 
71  if (cmd->speed == SPEED_10000) {
72  cmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
73  cmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
74  cmd->port = PORT_FIBRE;
75  } else {
76  cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full
77  | SUPPORTED_100baseT_Half | SUPPORTED_10baseT_Full
78  | SUPPORTED_10baseT_Half | SUPPORTED_Autoneg
79  | SUPPORTED_TP);
80  cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg
81  | ADVERTISED_TP);
82  cmd->port = PORT_TP;
83  }
84 
85  cmd->autoneg = port->autoneg == 1 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
86 
87  return 0;
88 }
89 
90 static int ehea_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
91 {
92  struct ehea_port *port = netdev_priv(dev);
93  int ret = 0;
94  u32 sp;
95 
96  if (cmd->autoneg == AUTONEG_ENABLE) {
97  sp = EHEA_SPEED_AUTONEG;
98  goto doit;
99  }
100 
101  switch (cmd->speed) {
102  case SPEED_10:
103  if (cmd->duplex == DUPLEX_FULL)
104  sp = H_SPEED_10M_F;
105  else
106  sp = H_SPEED_10M_H;
107  break;
108 
109  case SPEED_100:
110  if (cmd->duplex == DUPLEX_FULL)
111  sp = H_SPEED_100M_F;
112  else
113  sp = H_SPEED_100M_H;
114  break;
115 
116  case SPEED_1000:
117  if (cmd->duplex == DUPLEX_FULL)
118  sp = H_SPEED_1G_F;
119  else
120  ret = -EINVAL;
121  break;
122 
123  case SPEED_10000:
124  if (cmd->duplex == DUPLEX_FULL)
125  sp = H_SPEED_10G_F;
126  else
127  ret = -EINVAL;
128  break;
129 
130  default:
131  ret = -EINVAL;
132  break;
133  }
134 
135  if (ret)
136  goto out;
137 doit:
138  ret = ehea_set_portspeed(port, sp);
139 
140  if (!ret)
141  netdev_info(dev,
142  "Port speed successfully set: %dMbps %s Duplex\n",
143  port->port_speed,
144  port->full_duplex == 1 ? "Full" : "Half");
145 out:
146  return ret;
147 }
148 
149 static int ehea_nway_reset(struct net_device *dev)
150 {
151  struct ehea_port *port = netdev_priv(dev);
152  int ret;
153 
154  ret = ehea_set_portspeed(port, EHEA_SPEED_AUTONEG);
155 
156  if (!ret)
157  netdev_info(port->netdev,
158  "Port speed successfully set: %dMbps %s Duplex\n",
159  port->port_speed,
160  port->full_duplex == 1 ? "Full" : "Half");
161  return ret;
162 }
163 
164 static void ehea_get_drvinfo(struct net_device *dev,
165  struct ethtool_drvinfo *info)
166 {
167  strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
168  strlcpy(info->version, DRV_VERSION, sizeof(info->version));
169 }
170 
171 static u32 ehea_get_msglevel(struct net_device *dev)
172 {
173  struct ehea_port *port = netdev_priv(dev);
174  return port->msg_enable;
175 }
176 
177 static void ehea_set_msglevel(struct net_device *dev, u32 value)
178 {
179  struct ehea_port *port = netdev_priv(dev);
180  port->msg_enable = value;
181 }
182 
183 static const char ehea_ethtool_stats_keys[][ETH_GSTRING_LEN] = {
184  {"sig_comp_iv"},
185  {"swqe_refill_th"},
186  {"port resets"},
187  {"Receive errors"},
188  {"TCP cksum errors"},
189  {"IP cksum errors"},
190  {"Frame cksum errors"},
191  {"num SQ stopped"},
192  {"PR0 free_swqes"},
193  {"PR1 free_swqes"},
194  {"PR2 free_swqes"},
195  {"PR3 free_swqes"},
196  {"PR4 free_swqes"},
197  {"PR5 free_swqes"},
198  {"PR6 free_swqes"},
199  {"PR7 free_swqes"},
200  {"PR8 free_swqes"},
201  {"PR9 free_swqes"},
202  {"PR10 free_swqes"},
203  {"PR11 free_swqes"},
204  {"PR12 free_swqes"},
205  {"PR13 free_swqes"},
206  {"PR14 free_swqes"},
207  {"PR15 free_swqes"},
208 };
209 
210 static void ehea_get_strings(struct net_device *dev, u32 stringset, u8 *data)
211 {
212  if (stringset == ETH_SS_STATS) {
213  memcpy(data, &ehea_ethtool_stats_keys,
214  sizeof(ehea_ethtool_stats_keys));
215  }
216 }
217 
218 static int ehea_get_sset_count(struct net_device *dev, int sset)
219 {
220  switch (sset) {
221  case ETH_SS_STATS:
222  return ARRAY_SIZE(ehea_ethtool_stats_keys);
223  default:
224  return -EOPNOTSUPP;
225  }
226 }
227 
228 static void ehea_get_ethtool_stats(struct net_device *dev,
229  struct ethtool_stats *stats, u64 *data)
230 {
231  int i, k, tmp;
232  struct ehea_port *port = netdev_priv(dev);
233 
234  for (i = 0; i < ehea_get_sset_count(dev, ETH_SS_STATS); i++)
235  data[i] = 0;
236  i = 0;
237 
238  data[i++] = port->sig_comp_iv;
239  data[i++] = port->port_res[0].swqe_refill_th;
240  data[i++] = port->resets;
241 
242  for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++)
243  tmp += port->port_res[k].p_stats.poll_receive_errors;
244  data[i++] = tmp;
245 
246  for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++)
247  tmp += port->port_res[k].p_stats.err_tcp_cksum;
248  data[i++] = tmp;
249 
250  for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++)
251  tmp += port->port_res[k].p_stats.err_ip_cksum;
252  data[i++] = tmp;
253 
254  for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++)
255  tmp += port->port_res[k].p_stats.err_frame_crc;
256  data[i++] = tmp;
257 
258  for (k = 0, tmp = 0; k < EHEA_MAX_PORT_RES; k++)
259  tmp += port->port_res[k].p_stats.queue_stopped;
260  data[i++] = tmp;
261 
262  for (k = 0; k < 16; k++)
263  data[i++] = atomic_read(&port->port_res[k].swqe_avail);
264 }
265 
266 static const struct ethtool_ops ehea_ethtool_ops = {
267  .get_settings = ehea_get_settings,
268  .get_drvinfo = ehea_get_drvinfo,
269  .get_msglevel = ehea_get_msglevel,
270  .set_msglevel = ehea_set_msglevel,
271  .get_link = ethtool_op_get_link,
272  .get_strings = ehea_get_strings,
273  .get_sset_count = ehea_get_sset_count,
274  .get_ethtool_stats = ehea_get_ethtool_stats,
275  .set_settings = ehea_set_settings,
276  .nway_reset = ehea_nway_reset, /* Restart autonegotiation */
277 };
278 
279 void ehea_set_ethtool_ops(struct net_device *netdev)
280 {
281  SET_ETHTOOL_OPS(netdev, &ehea_ethtool_ops);
282 }
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