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
34static 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
90static 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;
137doit:
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");
145out:
146	return ret;
147}
148
149static 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
164static 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
171static u32 ehea_get_msglevel(struct net_device *dev)
172{
173	struct ehea_port *port = netdev_priv(dev);
174	return port->msg_enable;
175}
176
177static 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
183static 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
210static 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
218static 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
228static 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
266static 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
279void ehea_set_ethtool_ops(struct net_device *netdev)
280{
281	netdev->ethtool_ops = &ehea_ethtool_ops;
282}
283