clocksource: improve sh_cmt clocksource overflow handling
[linux-2.6.git] / drivers / net / benet / be_ethtool.c
1 /*
2  * Copyright (C) 2005 - 2009 ServerEngines
3  * All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License version 2
7  * as published by the Free Software Foundation.  The full GNU General
8  * Public License is included in this distribution in the file called COPYING.
9  *
10  * Contact Information:
11  * linux-drivers@serverengines.com
12  *
13  * ServerEngines
14  * 209 N. Fair Oaks Ave
15  * Sunnyvale, CA 94085
16  */
17
18 #include "be.h"
19 #include <linux/ethtool.h>
20
21 struct be_ethtool_stat {
22         char desc[ETH_GSTRING_LEN];
23         int type;
24         int size;
25         int offset;
26 };
27
28 enum {NETSTAT, PORTSTAT, MISCSTAT, DRVSTAT, ERXSTAT};
29 #define FIELDINFO(_struct, field) FIELD_SIZEOF(_struct, field), \
30                                         offsetof(_struct, field)
31 #define NETSTAT_INFO(field)     #field, NETSTAT,\
32                                         FIELDINFO(struct net_device_stats,\
33                                                 field)
34 #define DRVSTAT_INFO(field)     #field, DRVSTAT,\
35                                         FIELDINFO(struct be_drvr_stats, field)
36 #define MISCSTAT_INFO(field)    #field, MISCSTAT,\
37                                         FIELDINFO(struct be_rxf_stats, field)
38 #define PORTSTAT_INFO(field)    #field, PORTSTAT,\
39                                         FIELDINFO(struct be_port_rxf_stats, \
40                                                 field)
41 #define ERXSTAT_INFO(field)     #field, ERXSTAT,\
42                                         FIELDINFO(struct be_erx_stats, field)
43
44 static const struct be_ethtool_stat et_stats[] = {
45         {NETSTAT_INFO(rx_packets)},
46         {NETSTAT_INFO(tx_packets)},
47         {NETSTAT_INFO(rx_bytes)},
48         {NETSTAT_INFO(tx_bytes)},
49         {NETSTAT_INFO(rx_errors)},
50         {NETSTAT_INFO(tx_errors)},
51         {NETSTAT_INFO(rx_dropped)},
52         {NETSTAT_INFO(tx_dropped)},
53         {DRVSTAT_INFO(be_tx_reqs)},
54         {DRVSTAT_INFO(be_tx_stops)},
55         {DRVSTAT_INFO(be_fwd_reqs)},
56         {DRVSTAT_INFO(be_tx_wrbs)},
57         {DRVSTAT_INFO(be_polls)},
58         {DRVSTAT_INFO(be_tx_events)},
59         {DRVSTAT_INFO(be_rx_events)},
60         {DRVSTAT_INFO(be_tx_compl)},
61         {DRVSTAT_INFO(be_rx_compl)},
62         {DRVSTAT_INFO(be_ethrx_post_fail)},
63         {DRVSTAT_INFO(be_802_3_dropped_frames)},
64         {DRVSTAT_INFO(be_802_3_malformed_frames)},
65         {DRVSTAT_INFO(be_tx_rate)},
66         {DRVSTAT_INFO(be_rx_rate)},
67         {PORTSTAT_INFO(rx_unicast_frames)},
68         {PORTSTAT_INFO(rx_multicast_frames)},
69         {PORTSTAT_INFO(rx_broadcast_frames)},
70         {PORTSTAT_INFO(rx_crc_errors)},
71         {PORTSTAT_INFO(rx_alignment_symbol_errors)},
72         {PORTSTAT_INFO(rx_pause_frames)},
73         {PORTSTAT_INFO(rx_control_frames)},
74         {PORTSTAT_INFO(rx_in_range_errors)},
75         {PORTSTAT_INFO(rx_out_range_errors)},
76         {PORTSTAT_INFO(rx_frame_too_long)},
77         {PORTSTAT_INFO(rx_address_match_errors)},
78         {PORTSTAT_INFO(rx_vlan_mismatch)},
79         {PORTSTAT_INFO(rx_dropped_too_small)},
80         {PORTSTAT_INFO(rx_dropped_too_short)},
81         {PORTSTAT_INFO(rx_dropped_header_too_small)},
82         {PORTSTAT_INFO(rx_dropped_tcp_length)},
83         {PORTSTAT_INFO(rx_dropped_runt)},
84         {PORTSTAT_INFO(rx_fifo_overflow)},
85         {PORTSTAT_INFO(rx_input_fifo_overflow)},
86         {PORTSTAT_INFO(rx_ip_checksum_errs)},
87         {PORTSTAT_INFO(rx_tcp_checksum_errs)},
88         {PORTSTAT_INFO(rx_udp_checksum_errs)},
89         {PORTSTAT_INFO(rx_non_rss_packets)},
90         {PORTSTAT_INFO(rx_ipv4_packets)},
91         {PORTSTAT_INFO(rx_ipv6_packets)},
92         {PORTSTAT_INFO(tx_unicastframes)},
93         {PORTSTAT_INFO(tx_multicastframes)},
94         {PORTSTAT_INFO(tx_broadcastframes)},
95         {PORTSTAT_INFO(tx_pauseframes)},
96         {PORTSTAT_INFO(tx_controlframes)},
97         {MISCSTAT_INFO(rx_drops_no_pbuf)},
98         {MISCSTAT_INFO(rx_drops_no_txpb)},
99         {MISCSTAT_INFO(rx_drops_no_erx_descr)},
100         {MISCSTAT_INFO(rx_drops_no_tpre_descr)},
101         {MISCSTAT_INFO(rx_drops_too_many_frags)},
102         {MISCSTAT_INFO(rx_drops_invalid_ring)},
103         {MISCSTAT_INFO(forwarded_packets)},
104         {MISCSTAT_INFO(rx_drops_mtu)},
105         {ERXSTAT_INFO(rx_drops_no_fragments)},
106 };
107 #define ETHTOOL_STATS_NUM ARRAY_SIZE(et_stats)
108
109 static void
110 be_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
111 {
112         struct be_adapter *adapter = netdev_priv(netdev);
113
114         strcpy(drvinfo->driver, DRV_NAME);
115         strcpy(drvinfo->version, DRV_VER);
116         strncpy(drvinfo->fw_version, adapter->fw_ver, FW_VER_LEN);
117         strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
118         drvinfo->testinfo_len = 0;
119         drvinfo->regdump_len = 0;
120         drvinfo->eedump_len = 0;
121 }
122
123 static int
124 be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
125 {
126         struct be_adapter *adapter = netdev_priv(netdev);
127         struct be_eq_obj *rx_eq = &adapter->rx_eq;
128         struct be_eq_obj *tx_eq = &adapter->tx_eq;
129
130         coalesce->rx_max_coalesced_frames = adapter->max_rx_coal;
131
132         coalesce->rx_coalesce_usecs = rx_eq->cur_eqd;
133         coalesce->rx_coalesce_usecs_high = rx_eq->max_eqd;
134         coalesce->rx_coalesce_usecs_low = rx_eq->min_eqd;
135
136         coalesce->tx_coalesce_usecs = tx_eq->cur_eqd;
137         coalesce->tx_coalesce_usecs_high = tx_eq->max_eqd;
138         coalesce->tx_coalesce_usecs_low = tx_eq->min_eqd;
139
140         coalesce->use_adaptive_rx_coalesce = rx_eq->enable_aic;
141         coalesce->use_adaptive_tx_coalesce = tx_eq->enable_aic;
142
143         return 0;
144 }
145
146 /*
147  * This routine is used to set interrup coalescing delay *as well as*
148  * the number of pkts to coalesce for LRO.
149  */
150 static int
151 be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
152 {
153         struct be_adapter *adapter = netdev_priv(netdev);
154         struct be_ctrl_info *ctrl = &adapter->ctrl;
155         struct be_eq_obj *rx_eq = &adapter->rx_eq;
156         struct be_eq_obj *tx_eq = &adapter->tx_eq;
157         u32 tx_max, tx_min, tx_cur;
158         u32 rx_max, rx_min, rx_cur;
159         int status = 0;
160
161         if (coalesce->use_adaptive_tx_coalesce == 1)
162                 return -EINVAL;
163
164         adapter->max_rx_coal = coalesce->rx_max_coalesced_frames;
165         if (adapter->max_rx_coal > MAX_SKB_FRAGS)
166                 adapter->max_rx_coal = MAX_SKB_FRAGS - 1;
167
168         /* if AIC is being turned on now, start with an EQD of 0 */
169         if (rx_eq->enable_aic == 0 &&
170                 coalesce->use_adaptive_rx_coalesce == 1) {
171                 rx_eq->cur_eqd = 0;
172         }
173         rx_eq->enable_aic = coalesce->use_adaptive_rx_coalesce;
174
175         rx_max = coalesce->rx_coalesce_usecs_high;
176         rx_min = coalesce->rx_coalesce_usecs_low;
177         rx_cur = coalesce->rx_coalesce_usecs;
178
179         tx_max = coalesce->tx_coalesce_usecs_high;
180         tx_min = coalesce->tx_coalesce_usecs_low;
181         tx_cur = coalesce->tx_coalesce_usecs;
182
183         if (tx_cur > BE_MAX_EQD)
184                 tx_cur = BE_MAX_EQD;
185         if (tx_eq->cur_eqd != tx_cur) {
186                 status = be_cmd_modify_eqd(ctrl, tx_eq->q.id, tx_cur);
187                 if (!status)
188                         tx_eq->cur_eqd = tx_cur;
189         }
190
191         if (rx_eq->enable_aic) {
192                 if (rx_max > BE_MAX_EQD)
193                         rx_max = BE_MAX_EQD;
194                 if (rx_min > rx_max)
195                         rx_min = rx_max;
196                 rx_eq->max_eqd = rx_max;
197                 rx_eq->min_eqd = rx_min;
198                 if (rx_eq->cur_eqd > rx_max)
199                         rx_eq->cur_eqd = rx_max;
200                 if (rx_eq->cur_eqd < rx_min)
201                         rx_eq->cur_eqd = rx_min;
202         } else {
203                 if (rx_cur > BE_MAX_EQD)
204                         rx_cur = BE_MAX_EQD;
205                 if (rx_eq->cur_eqd != rx_cur) {
206                         status = be_cmd_modify_eqd(ctrl, rx_eq->q.id, rx_cur);
207                         if (!status)
208                                 rx_eq->cur_eqd = rx_cur;
209                 }
210         }
211         return 0;
212 }
213
214 static u32 be_get_rx_csum(struct net_device *netdev)
215 {
216         struct be_adapter *adapter = netdev_priv(netdev);
217
218         return adapter->rx_csum;
219 }
220
221 static int be_set_rx_csum(struct net_device *netdev, uint32_t data)
222 {
223         struct be_adapter *adapter = netdev_priv(netdev);
224
225         if (data)
226                 adapter->rx_csum = true;
227         else
228                 adapter->rx_csum = false;
229
230         return 0;
231 }
232
233 static void
234 be_get_ethtool_stats(struct net_device *netdev,
235                 struct ethtool_stats *stats, uint64_t *data)
236 {
237         struct be_adapter *adapter = netdev_priv(netdev);
238         struct be_drvr_stats *drvr_stats = &adapter->stats.drvr_stats;
239         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
240         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
241         struct be_port_rxf_stats *port_stats =
242                         &rxf_stats->port[adapter->port_num];
243         struct net_device_stats *net_stats = &adapter->stats.net_stats;
244         struct be_erx_stats *erx_stats = &hw_stats->erx;
245         void *p = NULL;
246         int i;
247
248         for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
249                 switch (et_stats[i].type) {
250                 case NETSTAT:
251                         p = net_stats;
252                         break;
253                 case DRVSTAT:
254                         p = drvr_stats;
255                         break;
256                 case PORTSTAT:
257                         p = port_stats;
258                         break;
259                 case MISCSTAT:
260                         p = rxf_stats;
261                         break;
262                 case ERXSTAT: /* Currently only one ERX stat is provided */
263                         p = (u32 *)erx_stats + adapter->rx_obj.q.id;
264                         break;
265                 }
266
267                 p = (u8 *)p + et_stats[i].offset;
268                 data[i] = (et_stats[i].size == sizeof(u64)) ?
269                                 *(u64 *)p: *(u32 *)p;
270         }
271
272         return;
273 }
274
275 static void
276 be_get_stat_strings(struct net_device *netdev, uint32_t stringset,
277                 uint8_t *data)
278 {
279         int i;
280         switch (stringset) {
281         case ETH_SS_STATS:
282                 for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
283                         memcpy(data, et_stats[i].desc, ETH_GSTRING_LEN);
284                         data += ETH_GSTRING_LEN;
285                 }
286                 break;
287         }
288 }
289
290 static int be_get_stats_count(struct net_device *netdev)
291 {
292         return ETHTOOL_STATS_NUM;
293 }
294
295 static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
296 {
297         ecmd->speed = SPEED_10000;
298         ecmd->duplex = DUPLEX_FULL;
299         ecmd->autoneg = AUTONEG_DISABLE;
300         return 0;
301 }
302
303 static void
304 be_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
305 {
306         struct be_adapter *adapter = netdev_priv(netdev);
307
308         ring->rx_max_pending = adapter->rx_obj.q.len;
309         ring->tx_max_pending = adapter->tx_obj.q.len;
310
311         ring->rx_pending = atomic_read(&adapter->rx_obj.q.used);
312         ring->tx_pending = atomic_read(&adapter->tx_obj.q.used);
313 }
314
315 static void
316 be_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
317 {
318         struct be_adapter *adapter = netdev_priv(netdev);
319
320         be_cmd_get_flow_control(&adapter->ctrl, &ecmd->tx_pause,
321                 &ecmd->rx_pause);
322         ecmd->autoneg = 0;
323 }
324
325 static int
326 be_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
327 {
328         struct be_adapter *adapter = netdev_priv(netdev);
329         int status;
330
331         if (ecmd->autoneg != 0)
332                 return -EINVAL;
333
334         status = be_cmd_set_flow_control(&adapter->ctrl, ecmd->tx_pause,
335                         ecmd->rx_pause);
336         if (!status)
337                 dev_warn(&adapter->pdev->dev, "Pause param set failed.\n");
338
339         return status;
340 }
341
342 struct ethtool_ops be_ethtool_ops = {
343         .get_settings = be_get_settings,
344         .get_drvinfo = be_get_drvinfo,
345         .get_link = ethtool_op_get_link,
346         .get_coalesce = be_get_coalesce,
347         .set_coalesce = be_set_coalesce,
348         .get_ringparam = be_get_ringparam,
349         .get_pauseparam = be_get_pauseparam,
350         .set_pauseparam = be_set_pauseparam,
351         .get_rx_csum = be_get_rx_csum,
352         .set_rx_csum = be_set_rx_csum,
353         .get_tx_csum = ethtool_op_get_tx_csum,
354         .set_tx_csum = ethtool_op_set_tx_csum,
355         .get_sg = ethtool_op_get_sg,
356         .set_sg = ethtool_op_set_sg,
357         .get_tso = ethtool_op_get_tso,
358         .set_tso = ethtool_op_set_tso,
359         .get_strings = be_get_stat_strings,
360         .get_stats_count = be_get_stats_count,
361         .get_ethtool_stats = be_get_ethtool_stats,
362 };