Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi...
[cascardo/linux.git] / drivers / net / ethernet / cisco / enic / enic_ethtool.c
1 /**
2  * Copyright 2013 Cisco Systems, Inc.  All rights reserved.
3  *
4  * This program is free software; you may redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 2 of the License.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15  * SOFTWARE.
16  *
17  */
18
19 #include <linux/netdevice.h>
20 #include <linux/ethtool.h>
21
22 #include "enic_res.h"
23 #include "enic.h"
24 #include "enic_dev.h"
25
26 struct enic_stat {
27         char name[ETH_GSTRING_LEN];
28         unsigned int index;
29 };
30
31 #define ENIC_TX_STAT(stat) { \
32         .name = #stat, \
33         .index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
34 }
35
36 #define ENIC_RX_STAT(stat) { \
37         .name = #stat, \
38         .index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
39 }
40
41 static const struct enic_stat enic_tx_stats[] = {
42         ENIC_TX_STAT(tx_frames_ok),
43         ENIC_TX_STAT(tx_unicast_frames_ok),
44         ENIC_TX_STAT(tx_multicast_frames_ok),
45         ENIC_TX_STAT(tx_broadcast_frames_ok),
46         ENIC_TX_STAT(tx_bytes_ok),
47         ENIC_TX_STAT(tx_unicast_bytes_ok),
48         ENIC_TX_STAT(tx_multicast_bytes_ok),
49         ENIC_TX_STAT(tx_broadcast_bytes_ok),
50         ENIC_TX_STAT(tx_drops),
51         ENIC_TX_STAT(tx_errors),
52         ENIC_TX_STAT(tx_tso),
53 };
54
55 static const struct enic_stat enic_rx_stats[] = {
56         ENIC_RX_STAT(rx_frames_ok),
57         ENIC_RX_STAT(rx_frames_total),
58         ENIC_RX_STAT(rx_unicast_frames_ok),
59         ENIC_RX_STAT(rx_multicast_frames_ok),
60         ENIC_RX_STAT(rx_broadcast_frames_ok),
61         ENIC_RX_STAT(rx_bytes_ok),
62         ENIC_RX_STAT(rx_unicast_bytes_ok),
63         ENIC_RX_STAT(rx_multicast_bytes_ok),
64         ENIC_RX_STAT(rx_broadcast_bytes_ok),
65         ENIC_RX_STAT(rx_drop),
66         ENIC_RX_STAT(rx_no_bufs),
67         ENIC_RX_STAT(rx_errors),
68         ENIC_RX_STAT(rx_rss),
69         ENIC_RX_STAT(rx_crc_errors),
70         ENIC_RX_STAT(rx_frames_64),
71         ENIC_RX_STAT(rx_frames_127),
72         ENIC_RX_STAT(rx_frames_255),
73         ENIC_RX_STAT(rx_frames_511),
74         ENIC_RX_STAT(rx_frames_1023),
75         ENIC_RX_STAT(rx_frames_1518),
76         ENIC_RX_STAT(rx_frames_to_max),
77 };
78
79 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
80 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
81
82 static int enic_get_settings(struct net_device *netdev,
83         struct ethtool_cmd *ecmd)
84 {
85         struct enic *enic = netdev_priv(netdev);
86
87         ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
88         ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
89         ecmd->port = PORT_FIBRE;
90         ecmd->transceiver = XCVR_EXTERNAL;
91
92         if (netif_carrier_ok(netdev)) {
93                 ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
94                 ecmd->duplex = DUPLEX_FULL;
95         } else {
96                 ethtool_cmd_speed_set(ecmd, -1);
97                 ecmd->duplex = -1;
98         }
99
100         ecmd->autoneg = AUTONEG_DISABLE;
101
102         return 0;
103 }
104
105 static void enic_get_drvinfo(struct net_device *netdev,
106         struct ethtool_drvinfo *drvinfo)
107 {
108         struct enic *enic = netdev_priv(netdev);
109         struct vnic_devcmd_fw_info *fw_info;
110
111         enic_dev_fw_info(enic, &fw_info);
112
113         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
114         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
115         strlcpy(drvinfo->fw_version, fw_info->fw_version,
116                 sizeof(drvinfo->fw_version));
117         strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
118                 sizeof(drvinfo->bus_info));
119 }
120
121 static void enic_get_strings(struct net_device *netdev, u32 stringset,
122         u8 *data)
123 {
124         unsigned int i;
125
126         switch (stringset) {
127         case ETH_SS_STATS:
128                 for (i = 0; i < enic_n_tx_stats; i++) {
129                         memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
130                         data += ETH_GSTRING_LEN;
131                 }
132                 for (i = 0; i < enic_n_rx_stats; i++) {
133                         memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
134                         data += ETH_GSTRING_LEN;
135                 }
136                 break;
137         }
138 }
139
140 static int enic_get_sset_count(struct net_device *netdev, int sset)
141 {
142         switch (sset) {
143         case ETH_SS_STATS:
144                 return enic_n_tx_stats + enic_n_rx_stats;
145         default:
146                 return -EOPNOTSUPP;
147         }
148 }
149
150 static void enic_get_ethtool_stats(struct net_device *netdev,
151         struct ethtool_stats *stats, u64 *data)
152 {
153         struct enic *enic = netdev_priv(netdev);
154         struct vnic_stats *vstats;
155         unsigned int i;
156
157         enic_dev_stats_dump(enic, &vstats);
158
159         for (i = 0; i < enic_n_tx_stats; i++)
160                 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
161         for (i = 0; i < enic_n_rx_stats; i++)
162                 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
163 }
164
165 static u32 enic_get_msglevel(struct net_device *netdev)
166 {
167         struct enic *enic = netdev_priv(netdev);
168         return enic->msg_enable;
169 }
170
171 static void enic_set_msglevel(struct net_device *netdev, u32 value)
172 {
173         struct enic *enic = netdev_priv(netdev);
174         enic->msg_enable = value;
175 }
176
177 static int enic_get_coalesce(struct net_device *netdev,
178         struct ethtool_coalesce *ecmd)
179 {
180         struct enic *enic = netdev_priv(netdev);
181
182         ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
183         ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
184
185         return 0;
186 }
187
188 static int enic_set_coalesce(struct net_device *netdev,
189         struct ethtool_coalesce *ecmd)
190 {
191         struct enic *enic = netdev_priv(netdev);
192         u32 tx_coalesce_usecs;
193         u32 rx_coalesce_usecs;
194         unsigned int i, intr;
195
196         tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
197                 vnic_dev_get_intr_coal_timer_max(enic->vdev));
198         rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
199                 vnic_dev_get_intr_coal_timer_max(enic->vdev));
200
201         switch (vnic_dev_get_intr_mode(enic->vdev)) {
202         case VNIC_DEV_INTR_MODE_INTX:
203                 if (tx_coalesce_usecs != rx_coalesce_usecs)
204                         return -EINVAL;
205
206                 intr = enic_legacy_io_intr();
207                 vnic_intr_coalescing_timer_set(&enic->intr[intr],
208                         tx_coalesce_usecs);
209                 break;
210         case VNIC_DEV_INTR_MODE_MSI:
211                 if (tx_coalesce_usecs != rx_coalesce_usecs)
212                         return -EINVAL;
213
214                 vnic_intr_coalescing_timer_set(&enic->intr[0],
215                         tx_coalesce_usecs);
216                 break;
217         case VNIC_DEV_INTR_MODE_MSIX:
218                 for (i = 0; i < enic->wq_count; i++) {
219                         intr = enic_msix_wq_intr(enic, i);
220                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
221                                 tx_coalesce_usecs);
222                 }
223
224                 for (i = 0; i < enic->rq_count; i++) {
225                         intr = enic_msix_rq_intr(enic, i);
226                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
227                                 rx_coalesce_usecs);
228                 }
229
230                 break;
231         default:
232                 break;
233         }
234
235         enic->tx_coalesce_usecs = tx_coalesce_usecs;
236         enic->rx_coalesce_usecs = rx_coalesce_usecs;
237
238         return 0;
239 }
240
241 static const struct ethtool_ops enic_ethtool_ops = {
242         .get_settings = enic_get_settings,
243         .get_drvinfo = enic_get_drvinfo,
244         .get_msglevel = enic_get_msglevel,
245         .set_msglevel = enic_set_msglevel,
246         .get_link = ethtool_op_get_link,
247         .get_strings = enic_get_strings,
248         .get_sset_count = enic_get_sset_count,
249         .get_ethtool_stats = enic_get_ethtool_stats,
250         .get_coalesce = enic_get_coalesce,
251         .set_coalesce = enic_set_coalesce,
252 };
253
254 void enic_set_ethtool_ops(struct net_device *netdev)
255 {
256         SET_ETHTOOL_OPS(netdev, &enic_ethtool_ops);
257 }