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i40e: reset VFs after PF reset
[deliverable/linux.git] / drivers / net / ethernet / intel / igbvf / ethtool.c
CommitLineData
d4e0fe01
AD		 1/*******************************************************************************
2
3 Intel(R) 82576 Virtual Function Linux driver
2a06ed92 4 Copyright(c) 2009 - 2012 Intel Corporation.
d4e0fe01
AD		 5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28/* ethtool support for igbvf */
29
30#include <linux/netdevice.h>
31#include <linux/ethtool.h>
32#include <linux/pci.h>
33#include <linux/vmalloc.h>
34#include <linux/delay.h>
35
36#include "igbvf.h"
37#include <linux/if_vlan.h>
38
39
40struct igbvf_stats {
41 char stat_string[ETH_GSTRING_LEN];
42 int sizeof_stat;
43 int stat_offset;
44 int base_stat_offset;
45};
46
47#define IGBVF_STAT(current, base) \
48 sizeof(((struct igbvf_adapter *)0)->current), \
49 offsetof(struct igbvf_adapter, current), \
50 offsetof(struct igbvf_adapter, base)
51
52static const struct igbvf_stats igbvf_gstrings_stats[] = {
53 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
54 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
55 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
56 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
57 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
58 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
59 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
60 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
61 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
62 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
63 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
64 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
65 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
66};
67
68#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
69
70static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
71 "Link test (on/offline)"
72};
73
74#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
75
76static int igbvf_get_settings(struct net_device *netdev,
77 struct ethtool_cmd *ecmd)
78{
79 struct igbvf_adapter *adapter = netdev_priv(netdev);
80 struct e1000_hw *hw = &adapter->hw;
81 u32 status;
82
83 ecmd->supported = SUPPORTED_1000baseT_Full;
84
85 ecmd->advertising = ADVERTISED_1000baseT_Full;
86
87 ecmd->port = -1;
88 ecmd->transceiver = XCVR_DUMMY1;
89
90 status = er32(STATUS);
91 if (status & E1000_STATUS_LU) {
92 if (status & E1000_STATUS_SPEED_1000)
70739497 93 ethtool_cmd_speed_set(ecmd, SPEED_1000);
d4e0fe01 94 else if (status & E1000_STATUS_SPEED_100)
70739497 95 ethtool_cmd_speed_set(ecmd, SPEED_100);
d4e0fe01 96 else
70739497 97 ethtool_cmd_speed_set(ecmd, SPEED_10);
d4e0fe01
AD		 98
99 if (status & E1000_STATUS_FD)
100 ecmd->duplex = DUPLEX_FULL;
101 else
102 ecmd->duplex = DUPLEX_HALF;
103 } else {
70739497 104 ethtool_cmd_speed_set(ecmd, -1);
d4e0fe01
AD		 105 ecmd->duplex = -1;
106 }
107
108 ecmd->autoneg = AUTONEG_DISABLE;
109
110 return 0;
111}
112
d4e0fe01
AD		 113static int igbvf_set_settings(struct net_device *netdev,
114 struct ethtool_cmd *ecmd)
115{
116 return -EOPNOTSUPP;
117}
118
119static void igbvf_get_pauseparam(struct net_device *netdev,
120 struct ethtool_pauseparam *pause)
121{
122 return;
123}
124
125static int igbvf_set_pauseparam(struct net_device *netdev,
126 struct ethtool_pauseparam *pause)
127{
128 return -EOPNOTSUPP;
129}
130
d4e0fe01
AD		 131static u32 igbvf_get_msglevel(struct net_device *netdev)
132{
133 struct igbvf_adapter *adapter = netdev_priv(netdev);
134 return adapter->msg_enable;
135}
136
137static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
138{
139 struct igbvf_adapter *adapter = netdev_priv(netdev);
140 adapter->msg_enable = data;
141}
142
143static int igbvf_get_regs_len(struct net_device *netdev)
144{
145#define IGBVF_REGS_LEN 8
146 return IGBVF_REGS_LEN * sizeof(u32);
147}
148
149static void igbvf_get_regs(struct net_device *netdev,
150 struct ethtool_regs *regs, void *p)
151{
152 struct igbvf_adapter *adapter = netdev_priv(netdev);
153 struct e1000_hw *hw = &adapter->hw;
154 u32 *regs_buff = p;
d4e0fe01
AD		 155
156 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
157
ff938e43
SS		 158 regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
159 adapter->pdev->device;
d4e0fe01
AD		 160
161 regs_buff[0] = er32(CTRL);
162 regs_buff[1] = er32(STATUS);
163
164 regs_buff[2] = er32(RDLEN(0));
165 regs_buff[3] = er32(RDH(0));
166 regs_buff[4] = er32(RDT(0));
167
168 regs_buff[5] = er32(TDLEN(0));
169 regs_buff[6] = er32(TDH(0));
170 regs_buff[7] = er32(TDT(0));
171}
172
173static int igbvf_get_eeprom_len(struct net_device *netdev)
174{
175 return 0;
176}
177
178static int igbvf_get_eeprom(struct net_device *netdev,
179 struct ethtool_eeprom *eeprom, u8 *bytes)
180{
181 return -EOPNOTSUPP;
182}
183
184static int igbvf_set_eeprom(struct net_device *netdev,
185 struct ethtool_eeprom *eeprom, u8 *bytes)
186{
187 return -EOPNOTSUPP;
188}
189
190static void igbvf_get_drvinfo(struct net_device *netdev,
191 struct ethtool_drvinfo *drvinfo)
192{
193 struct igbvf_adapter *adapter = netdev_priv(netdev);
d4e0fe01 194
612a94d6
RJ		 195 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver));
196 strlcpy(drvinfo->version, igbvf_driver_version,
197 sizeof(drvinfo->version));
612a94d6
RJ		 198 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
199 sizeof(drvinfo->bus_info));
d4e0fe01
AD		 200 drvinfo->regdump_len = igbvf_get_regs_len(netdev);
201 drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
202}
203
204static void igbvf_get_ringparam(struct net_device *netdev,
205 struct ethtool_ringparam *ring)
206{
207 struct igbvf_adapter *adapter = netdev_priv(netdev);
208 struct igbvf_ring *tx_ring = adapter->tx_ring;
209 struct igbvf_ring *rx_ring = adapter->rx_ring;
210
211 ring->rx_max_pending = IGBVF_MAX_RXD;
212 ring->tx_max_pending = IGBVF_MAX_TXD;
d4e0fe01
AD		 213 ring->rx_pending = rx_ring->count;
214 ring->tx_pending = tx_ring->count;
d4e0fe01
AD		 215}
216
217static int igbvf_set_ringparam(struct net_device *netdev,
218 struct ethtool_ringparam *ring)
219{
220 struct igbvf_adapter *adapter = netdev_priv(netdev);
221 struct igbvf_ring *temp_ring;
39305965 222 int err = 0;
d4e0fe01
AD		 223 u32 new_rx_count, new_tx_count;
224
225 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
226 return -EINVAL;
227
228 new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
229 new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
230 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
231
232 new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
233 new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
234 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
235
236 if ((new_tx_count == adapter->tx_ring->count) &&
237 (new_rx_count == adapter->rx_ring->count)) {
238 /* nothing to do */
239 return 0;
240 }
241
d4e0fe01
AD		 242 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
243 msleep(1);
244
39305965
AD		 245 if (!netif_running(adapter->netdev)) {
246 adapter->tx_ring->count = new_tx_count;
247 adapter->rx_ring->count = new_rx_count;
248 goto clear_reset;
249 }
250
251 temp_ring = vmalloc(sizeof(struct igbvf_ring));
252 if (!temp_ring) {
253 err = -ENOMEM;
254 goto clear_reset;
255 }
256
257 igbvf_down(adapter);
d4e0fe01
AD		 258
259 /*
260 * We can't just free everything and then setup again,
261 * because the ISRs in MSI-X mode get passed pointers
262 * to the tx and rx ring structs.
263 */
264 if (new_tx_count != adapter->tx_ring->count) {
265 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
266
267 temp_ring->count = new_tx_count;
268 err = igbvf_setup_tx_resources(adapter, temp_ring);
269 if (err)
270 goto err_setup;
271
272 igbvf_free_tx_resources(adapter->tx_ring);
273
274 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
275 }
276
277 if (new_rx_count != adapter->rx_ring->count) {
278 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
279
280 temp_ring->count = new_rx_count;
281 err = igbvf_setup_rx_resources(adapter, temp_ring);
282 if (err)
283 goto err_setup;
284
285 igbvf_free_rx_resources(adapter->rx_ring);
286
287 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
288 }
d4e0fe01 289err_setup:
39305965 290 igbvf_up(adapter);
d4e0fe01 291 vfree(temp_ring);
39305965
AD		 292clear_reset:
293 clear_bit(__IGBVF_RESETTING, &adapter->state);
d4e0fe01
AD		 294 return err;
295}
296
297static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
298{
299 struct e1000_hw *hw = &adapter->hw;
300 *data = 0;
301
302 hw->mac.ops.check_for_link(hw);
303
304 if (!(er32(STATUS) & E1000_STATUS_LU))
305 *data = 1;
306
307 return *data;
308}
309
d4e0fe01
AD		 310static void igbvf_diag_test(struct net_device *netdev,
311 struct ethtool_test *eth_test, u64 *data)
312{
313 struct igbvf_adapter *adapter = netdev_priv(netdev);
314
315 set_bit(__IGBVF_TESTING, &adapter->state);
316
317 /*
318 * Link test performed before hardware reset so autoneg doesn't
319 * interfere with test result
320 */
321 if (igbvf_link_test(adapter, &data[0]))
322 eth_test->flags |= ETH_TEST_FL_FAILED;
323
324 clear_bit(__IGBVF_TESTING, &adapter->state);
325 msleep_interruptible(4 * 1000);
326}
327
328static void igbvf_get_wol(struct net_device *netdev,
329 struct ethtool_wolinfo *wol)
330{
331 wol->supported = 0;
332 wol->wolopts = 0;
d4e0fe01
AD		 333}
334
335static int igbvf_set_wol(struct net_device *netdev,
336 struct ethtool_wolinfo *wol)
337{
338 return -EOPNOTSUPP;
339}
340
d4e0fe01
AD		 341static int igbvf_get_coalesce(struct net_device *netdev,
342 struct ethtool_coalesce *ec)
343{
344 struct igbvf_adapter *adapter = netdev_priv(netdev);
345
ab50a2a4
MW		 346 if (adapter->requested_itr <= 3)
347 ec->rx_coalesce_usecs = adapter->requested_itr;
d4e0fe01 348 else
ab50a2a4 349 ec->rx_coalesce_usecs = adapter->current_itr >> 2;
d4e0fe01
AD		 350
351 return 0;
352}
353
354static int igbvf_set_coalesce(struct net_device *netdev,
355 struct ethtool_coalesce *ec)
356{
357 struct igbvf_adapter *adapter = netdev_priv(netdev);
358 struct e1000_hw *hw = &adapter->hw;
359
0e90b49c
MW		 360 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) &&
361 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) {
362 adapter->current_itr = ec->rx_coalesce_usecs << 2;
363 adapter->requested_itr = 1000000000 /
364 (adapter->current_itr * 256);
365 } else if ((ec->rx_coalesce_usecs == 3) ||
366 (ec->rx_coalesce_usecs == 2)) {
ab50a2a4
MW		 367 adapter->current_itr = IGBVF_START_ITR;
368 adapter->requested_itr = ec->rx_coalesce_usecs;
0e90b49c
MW		 369 } else if (ec->rx_coalesce_usecs == 0) {
370 /*
371 * The user's desire is to turn off interrupt throttling
372 * altogether, but due to HW limitations, we can't do that.
373 * Instead we set a very small value in EITR, which would
374 * allow ~967k interrupts per second, but allow the adapter's
375 * internal clocking to still function properly.
376 */
377 adapter->current_itr = 4;
ab50a2a4
MW		 378 adapter->requested_itr = 1000000000 /
379 (adapter->current_itr * 256);
0e90b49c
MW		 380 } else
381 return -EINVAL;
d4e0fe01 382
ab50a2a4
MW		 383 writel(adapter->current_itr,
384 hw->hw_addr + adapter->rx_ring->itr_register);
d4e0fe01
AD		 385
386 return 0;
387}
388
389static int igbvf_nway_reset(struct net_device *netdev)
390{
391 struct igbvf_adapter *adapter = netdev_priv(netdev);
392 if (netif_running(netdev))
393 igbvf_reinit_locked(adapter);
394 return 0;
395}
396
397
398static void igbvf_get_ethtool_stats(struct net_device *netdev,
399 struct ethtool_stats *stats,
400 u64 *data)
401{
402 struct igbvf_adapter *adapter = netdev_priv(netdev);
403 int i;
404
405 igbvf_update_stats(adapter);
406 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
407 char *p = (char *)adapter +
408 igbvf_gstrings_stats[i].stat_offset;
409 char *b = (char *)adapter +
410 igbvf_gstrings_stats[i].base_stat_offset;
411 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
412 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
413 (*(u32 *)p - *(u32 *)b));
414 }
415
416}
417
15f0a394
BH		 418static int igbvf_get_sset_count(struct net_device *dev, int stringset)
419{
420 switch(stringset) {
421 case ETH_SS_TEST:
422 return IGBVF_TEST_LEN;
423 case ETH_SS_STATS:
424 return IGBVF_GLOBAL_STATS_LEN;
425 default:
426 return -EINVAL;
427 }
428}
429
d4e0fe01
AD		 430static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
431 u8 *data)
432{
433 u8 *p = data;
434 int i;
435
436 switch (stringset) {
437 case ETH_SS_TEST:
438 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
439 break;
440 case ETH_SS_STATS:
441 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
442 memcpy(p, igbvf_gstrings_stats[i].stat_string,
443 ETH_GSTRING_LEN);
444 p += ETH_GSTRING_LEN;
445 }
446 break;
447 }
448}
449
450static const struct ethtool_ops igbvf_ethtool_ops = {
451 .get_settings = igbvf_get_settings,
452 .set_settings = igbvf_set_settings,
453 .get_drvinfo = igbvf_get_drvinfo,
454 .get_regs_len = igbvf_get_regs_len,
455 .get_regs = igbvf_get_regs,
456 .get_wol = igbvf_get_wol,
457 .set_wol = igbvf_set_wol,
458 .get_msglevel = igbvf_get_msglevel,
459 .set_msglevel = igbvf_set_msglevel,
460 .nway_reset = igbvf_nway_reset,
ed4ba4b5 461 .get_link = ethtool_op_get_link,
d4e0fe01
AD		 462 .get_eeprom_len = igbvf_get_eeprom_len,
463 .get_eeprom = igbvf_get_eeprom,
464 .set_eeprom = igbvf_set_eeprom,
465 .get_ringparam = igbvf_get_ringparam,
466 .set_ringparam = igbvf_set_ringparam,
467 .get_pauseparam = igbvf_get_pauseparam,
468 .set_pauseparam = igbvf_set_pauseparam,
d4e0fe01 469 .self_test = igbvf_diag_test,
15f0a394 470 .get_sset_count = igbvf_get_sset_count,
d4e0fe01 471 .get_strings = igbvf_get_strings,
d4e0fe01 472 .get_ethtool_stats = igbvf_get_ethtool_stats,
d4e0fe01
AD		 473 .get_coalesce = igbvf_get_coalesce,
474 .set_coalesce = igbvf_set_coalesce,
475};
476
477void igbvf_set_ethtool_ops(struct net_device *netdev)
478{
b2f0f6bb 479 SET_ETHTOOL_OPS(netdev, &igbvf_ethtool_ops);
d4e0fe01 480}
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