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 <raisch@de.ibm.com>
10  *       Jan-Bernd Themann <themann@de.ibm.com>
11  *       Thomas Klein <tklein@de.ibm.com>
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 = SPEED_UNKNOWN;
67 		cmd->duplex = DUPLEX_UNKNOWN;
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 	netdev->ethtool_ops = &ehea_ethtool_ops;
282 }
283