1 /*******************************************************************************
2
3 Intel(R) 82576 Virtual Function Linux driver
4 Copyright(c) 2009 Intel Corporation.
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
40 struct 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
52 static 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
70 static 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
76 static 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)
93 ecmd->speed = 1000;
94 else if (status & E1000_STATUS_SPEED_100)
95 ecmd->speed = 100;
96 else
97 ecmd->speed = 10;
98
99 if (status & E1000_STATUS_FD)
100 ecmd->duplex = DUPLEX_FULL;
101 else
102 ecmd->duplex = DUPLEX_HALF;
103 } else {
104 ecmd->speed = -1;
105 ecmd->duplex = -1;
106 }
107
108 ecmd->autoneg = AUTONEG_DISABLE;
109
110 return 0;
111 }
112
113 static u32 igbvf_get_link(struct net_device *netdev)
114 {
115 return netif_carrier_ok(netdev);
116 }
117
118 static int igbvf_set_settings(struct net_device *netdev,
119 struct ethtool_cmd *ecmd)
120 {
121 return -EOPNOTSUPP;
122 }
123
124 static void igbvf_get_pauseparam(struct net_device *netdev,
125 struct ethtool_pauseparam *pause)
126 {
127 return;
128 }
129
130 static int igbvf_set_pauseparam(struct net_device *netdev,
131 struct ethtool_pauseparam *pause)
132 {
133 return -EOPNOTSUPP;
134 }
135
136 static u32 igbvf_get_rx_csum(struct net_device *netdev)
137 {
138 struct igbvf_adapter *adapter = netdev_priv(netdev);
139 return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
140 }
141
142 static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
143 {
144 struct igbvf_adapter *adapter = netdev_priv(netdev);
145
146 if (data)
147 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
148 else
149 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
150
151 return 0;
152 }
153
154 static u32 igbvf_get_tx_csum(struct net_device *netdev)
155 {
156 return ((netdev->features & NETIF_F_IP_CSUM) != 0);
157 }
158
159 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
160 {
161 if (data)
162 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
163 else
164 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
165 return 0;
166 }
167
168 static int igbvf_set_tso(struct net_device *netdev, u32 data)
169 {
170 struct igbvf_adapter *adapter = netdev_priv(netdev);
171
172 if (data) {
173 netdev->features |= NETIF_F_TSO;
174 netdev->features |= NETIF_F_TSO6;
175 } else {
176 netdev->features &= ~NETIF_F_TSO;
177 netdev->features &= ~NETIF_F_TSO6;
178 }
179
180 dev_info(&adapter->pdev->dev, "TSO is %s\n",
181 data ? "Enabled" : "Disabled");
182 return 0;
183 }
184
185 static u32 igbvf_get_msglevel(struct net_device *netdev)
186 {
187 struct igbvf_adapter *adapter = netdev_priv(netdev);
188 return adapter->msg_enable;
189 }
190
191 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
192 {
193 struct igbvf_adapter *adapter = netdev_priv(netdev);
194 adapter->msg_enable = data;
195 }
196
197 static int igbvf_get_regs_len(struct net_device *netdev)
198 {
199 #define IGBVF_REGS_LEN 8
200 return IGBVF_REGS_LEN * sizeof(u32);
201 }
202
203 static void igbvf_get_regs(struct net_device *netdev,
204 struct ethtool_regs *regs, void *p)
205 {
206 struct igbvf_adapter *adapter = netdev_priv(netdev);
207 struct e1000_hw *hw = &adapter->hw;
208 u32 *regs_buff = p;
209 u8 revision_id;
210
211 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
212
213 pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
214
215 regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
216
217 regs_buff[0] = er32(CTRL);
218 regs_buff[1] = er32(STATUS);
219
220 regs_buff[2] = er32(RDLEN(0));
221 regs_buff[3] = er32(RDH(0));
222 regs_buff[4] = er32(RDT(0));
223
224 regs_buff[5] = er32(TDLEN(0));
225 regs_buff[6] = er32(TDH(0));
226 regs_buff[7] = er32(TDT(0));
227 }
228
229 static int igbvf_get_eeprom_len(struct net_device *netdev)
230 {
231 return 0;
232 }
233
234 static int igbvf_get_eeprom(struct net_device *netdev,
235 struct ethtool_eeprom *eeprom, u8 *bytes)
236 {
237 return -EOPNOTSUPP;
238 }
239
240 static int igbvf_set_eeprom(struct net_device *netdev,
241 struct ethtool_eeprom *eeprom, u8 *bytes)
242 {
243 return -EOPNOTSUPP;
244 }
245
246 static void igbvf_get_drvinfo(struct net_device *netdev,
247 struct ethtool_drvinfo *drvinfo)
248 {
249 struct igbvf_adapter *adapter = netdev_priv(netdev);
250 char firmware_version[32] = "N/A";
251
252 strncpy(drvinfo->driver, igbvf_driver_name, 32);
253 strncpy(drvinfo->version, igbvf_driver_version, 32);
254 strncpy(drvinfo->fw_version, firmware_version, 32);
255 strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
256 drvinfo->regdump_len = igbvf_get_regs_len(netdev);
257 drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
258 }
259
260 static void igbvf_get_ringparam(struct net_device *netdev,
261 struct ethtool_ringparam *ring)
262 {
263 struct igbvf_adapter *adapter = netdev_priv(netdev);
264 struct igbvf_ring *tx_ring = adapter->tx_ring;
265 struct igbvf_ring *rx_ring = adapter->rx_ring;
266
267 ring->rx_max_pending = IGBVF_MAX_RXD;
268 ring->tx_max_pending = IGBVF_MAX_TXD;
269 ring->rx_mini_max_pending = 0;
270 ring->rx_jumbo_max_pending = 0;
271 ring->rx_pending = rx_ring->count;
272 ring->tx_pending = tx_ring->count;
273 ring->rx_mini_pending = 0;
274 ring->rx_jumbo_pending = 0;
275 }
276
277 static int igbvf_set_ringparam(struct net_device *netdev,
278 struct ethtool_ringparam *ring)
279 {
280 struct igbvf_adapter *adapter = netdev_priv(netdev);
281 struct igbvf_ring *temp_ring;
282 int err;
283 u32 new_rx_count, new_tx_count;
284
285 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
286 return -EINVAL;
287
288 new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
289 new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
290 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
291
292 new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
293 new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
294 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
295
296 if ((new_tx_count == adapter->tx_ring->count) &&
297 (new_rx_count == adapter->rx_ring->count)) {
298 /* nothing to do */
299 return 0;
300 }
301
302 temp_ring = vmalloc(sizeof(struct igbvf_ring));
303 if (!temp_ring)
304 return -ENOMEM;
305
306 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
307 msleep(1);
308
309 if (netif_running(adapter->netdev))
310 igbvf_down(adapter);
311
312 /*
313 * We can't just free everything and then setup again,
314 * because the ISRs in MSI-X mode get passed pointers
315 * to the tx and rx ring structs.
316 */
317 if (new_tx_count != adapter->tx_ring->count) {
318 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
319
320 temp_ring->count = new_tx_count;
321 err = igbvf_setup_tx_resources(adapter, temp_ring);
322 if (err)
323 goto err_setup;
324
325 igbvf_free_tx_resources(adapter->tx_ring);
326
327 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
328 }
329
330 if (new_rx_count != adapter->rx_ring->count) {
331 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
332
333 temp_ring->count = new_rx_count;
334 err = igbvf_setup_rx_resources(adapter, temp_ring);
335 if (err)
336 goto err_setup;
337
338 igbvf_free_rx_resources(adapter->rx_ring);
339
340 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
341 }
342
343 err = 0;
344 err_setup:
345 if (netif_running(adapter->netdev))
346 igbvf_up(adapter);
347
348 clear_bit(__IGBVF_RESETTING, &adapter->state);
349 vfree(temp_ring);
350 return err;
351 }
352
353 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
354 {
355 struct e1000_hw *hw = &adapter->hw;
356 *data = 0;
357
358 hw->mac.ops.check_for_link(hw);
359
360 if (!(er32(STATUS) & E1000_STATUS_LU))
361 *data = 1;
362
363 return *data;
364 }
365
366 static int igbvf_get_self_test_count(struct net_device *netdev)
367 {
368 return IGBVF_TEST_LEN;
369 }
370
371 static int igbvf_get_stats_count(struct net_device *netdev)
372 {
373 return IGBVF_GLOBAL_STATS_LEN;
374 }
375
376 static void igbvf_diag_test(struct net_device *netdev,
377 struct ethtool_test *eth_test, u64 *data)
378 {
379 struct igbvf_adapter *adapter = netdev_priv(netdev);
380
381 set_bit(__IGBVF_TESTING, &adapter->state);
382
383 /*
384 * Link test performed before hardware reset so autoneg doesn't
385 * interfere with test result
386 */
387 if (igbvf_link_test(adapter, &data[0]))
388 eth_test->flags |= ETH_TEST_FL_FAILED;
389
390 clear_bit(__IGBVF_TESTING, &adapter->state);
391 msleep_interruptible(4 * 1000);
392 }
393
394 static void igbvf_get_wol(struct net_device *netdev,
395 struct ethtool_wolinfo *wol)
396 {
397 wol->supported = 0;
398 wol->wolopts = 0;
399
400 return;
401 }
402
403 static int igbvf_set_wol(struct net_device *netdev,
404 struct ethtool_wolinfo *wol)
405 {
406 return -EOPNOTSUPP;
407 }
408
409 static int igbvf_phys_id(struct net_device *netdev, u32 data)
410 {
411 return 0;
412 }
413
414 static int igbvf_get_coalesce(struct net_device *netdev,
415 struct ethtool_coalesce *ec)
416 {
417 struct igbvf_adapter *adapter = netdev_priv(netdev);
418
419 if (adapter->itr_setting <= 3)
420 ec->rx_coalesce_usecs = adapter->itr_setting;
421 else
422 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
423
424 return 0;
425 }
426
427 static int igbvf_set_coalesce(struct net_device *netdev,
428 struct ethtool_coalesce *ec)
429 {
430 struct igbvf_adapter *adapter = netdev_priv(netdev);
431 struct e1000_hw *hw = &adapter->hw;
432
433 if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
434 ((ec->rx_coalesce_usecs > 3) &&
435 (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
436 (ec->rx_coalesce_usecs == 2))
437 return -EINVAL;
438
439 /* convert to rate of irq's per second */
440 if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
441 adapter->itr = IGBVF_START_ITR;
442 adapter->itr_setting = ec->rx_coalesce_usecs;
443 } else {
444 adapter->itr = ec->rx_coalesce_usecs << 2;
445 adapter->itr_setting = adapter->itr;
446 }
447
448 writel(adapter->itr,
449 hw->hw_addr + adapter->rx_ring[0].itr_register);
450
451 return 0;
452 }
453
454 static int igbvf_nway_reset(struct net_device *netdev)
455 {
456 struct igbvf_adapter *adapter = netdev_priv(netdev);
457 if (netif_running(netdev))
458 igbvf_reinit_locked(adapter);
459 return 0;
460 }
461
462
463 static void igbvf_get_ethtool_stats(struct net_device *netdev,
464 struct ethtool_stats *stats,
465 u64 *data)
466 {
467 struct igbvf_adapter *adapter = netdev_priv(netdev);
468 int i;
469
470 igbvf_update_stats(adapter);
471 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
472 char *p = (char *)adapter +
473 igbvf_gstrings_stats[i].stat_offset;
474 char *b = (char *)adapter +
475 igbvf_gstrings_stats[i].base_stat_offset;
476 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
477 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
478 (*(u32 *)p - *(u32 *)b));
479 }
480
481 }
482
483 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
484 u8 *data)
485 {
486 u8 *p = data;
487 int i;
488
489 switch (stringset) {
490 case ETH_SS_TEST:
491 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
492 break;
493 case ETH_SS_STATS:
494 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
495 memcpy(p, igbvf_gstrings_stats[i].stat_string,
496 ETH_GSTRING_LEN);
497 p += ETH_GSTRING_LEN;
498 }
499 break;
500 }
501 }
502
503 static const struct ethtool_ops igbvf_ethtool_ops = {
504 .get_settings = igbvf_get_settings,
505 .set_settings = igbvf_set_settings,
506 .get_drvinfo = igbvf_get_drvinfo,
507 .get_regs_len = igbvf_get_regs_len,
508 .get_regs = igbvf_get_regs,
509 .get_wol = igbvf_get_wol,
510 .set_wol = igbvf_set_wol,
511 .get_msglevel = igbvf_get_msglevel,
512 .set_msglevel = igbvf_set_msglevel,
513 .nway_reset = igbvf_nway_reset,
514 .get_link = igbvf_get_link,
515 .get_eeprom_len = igbvf_get_eeprom_len,
516 .get_eeprom = igbvf_get_eeprom,
517 .set_eeprom = igbvf_set_eeprom,
518 .get_ringparam = igbvf_get_ringparam,
519 .set_ringparam = igbvf_set_ringparam,
520 .get_pauseparam = igbvf_get_pauseparam,
521 .set_pauseparam = igbvf_set_pauseparam,
522 .get_rx_csum = igbvf_get_rx_csum,
523 .set_rx_csum = igbvf_set_rx_csum,
524 .get_tx_csum = igbvf_get_tx_csum,
525 .set_tx_csum = igbvf_set_tx_csum,
526 .get_sg = ethtool_op_get_sg,
527 .set_sg = ethtool_op_set_sg,
528 .get_tso = ethtool_op_get_tso,
529 .set_tso = igbvf_set_tso,
530 .self_test = igbvf_diag_test,
531 .get_strings = igbvf_get_strings,
532 .phys_id = igbvf_phys_id,
533 .get_ethtool_stats = igbvf_get_ethtool_stats,
534 .self_test_count = igbvf_get_self_test_count,
535 .get_stats_count = igbvf_get_stats_count,
536 .get_coalesce = igbvf_get_coalesce,
537 .set_coalesce = igbvf_set_coalesce,
538 };
539
540 void igbvf_set_ethtool_ops(struct net_device *netdev)
541 {
542 /* have to "undeclare" const on this struct to remove warnings */
543 SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
544 }
545
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