Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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linux
1/*******************************************************************************
2
3 Intel(R) 82576 Virtual Function Linux driver
4 Copyright(c) 2009 - 2010 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
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)
93 ethtool_cmd_speed_set(ecmd, SPEED_1000);
94 else if (status & E1000_STATUS_SPEED_100)
95 ethtool_cmd_speed_set(ecmd, SPEED_100);
96 else
97 ethtool_cmd_speed_set(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 ethtool_cmd_speed_set(ecmd, -1);
105 ecmd->duplex = -1;
106 }
107
108 ecmd->autoneg = AUTONEG_DISABLE;
109
110 return 0;
111}
112
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
131static u32 igbvf_get_rx_csum(struct net_device *netdev)
132{
133 struct igbvf_adapter *adapter = netdev_priv(netdev);
134 return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
135}
136
137static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
138{
139 struct igbvf_adapter *adapter = netdev_priv(netdev);
140
141 if (data)
142 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
143 else
144 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
145
146 return 0;
147}
148
149static u32 igbvf_get_tx_csum(struct net_device *netdev)
150{
151 return (netdev->features & NETIF_F_IP_CSUM) != 0;
152}
153
154static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
155{
156 if (data)
157 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
158 else
159 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
160 return 0;
161}
162
163static int igbvf_set_tso(struct net_device *netdev, u32 data)
164{
165 struct igbvf_adapter *adapter = netdev_priv(netdev);
166
167 if (data) {
168 netdev->features |= NETIF_F_TSO;
169 netdev->features |= NETIF_F_TSO6;
170 } else {
171 netdev->features &= ~NETIF_F_TSO;
172 netdev->features &= ~NETIF_F_TSO6;
173 }
174
175 dev_info(&adapter->pdev->dev, "TSO is %s\n",
176 data ? "Enabled" : "Disabled");
177 return 0;
178}
179
180static u32 igbvf_get_msglevel(struct net_device *netdev)
181{
182 struct igbvf_adapter *adapter = netdev_priv(netdev);
183 return adapter->msg_enable;
184}
185
186static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
187{
188 struct igbvf_adapter *adapter = netdev_priv(netdev);
189 adapter->msg_enable = data;
190}
191
192static int igbvf_get_regs_len(struct net_device *netdev)
193{
194#define IGBVF_REGS_LEN 8
195 return IGBVF_REGS_LEN * sizeof(u32);
196}
197
198static void igbvf_get_regs(struct net_device *netdev,
199 struct ethtool_regs *regs, void *p)
200{
201 struct igbvf_adapter *adapter = netdev_priv(netdev);
202 struct e1000_hw *hw = &adapter->hw;
203 u32 *regs_buff = p;
204
205 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
206
207 regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
208 adapter->pdev->device;
209
210 regs_buff[0] = er32(CTRL);
211 regs_buff[1] = er32(STATUS);
212
213 regs_buff[2] = er32(RDLEN(0));
214 regs_buff[3] = er32(RDH(0));
215 regs_buff[4] = er32(RDT(0));
216
217 regs_buff[5] = er32(TDLEN(0));
218 regs_buff[6] = er32(TDH(0));
219 regs_buff[7] = er32(TDT(0));
220}
221
222static int igbvf_get_eeprom_len(struct net_device *netdev)
223{
224 return 0;
225}
226
227static int igbvf_get_eeprom(struct net_device *netdev,
228 struct ethtool_eeprom *eeprom, u8 *bytes)
229{
230 return -EOPNOTSUPP;
231}
232
233static int igbvf_set_eeprom(struct net_device *netdev,
234 struct ethtool_eeprom *eeprom, u8 *bytes)
235{
236 return -EOPNOTSUPP;
237}
238
239static void igbvf_get_drvinfo(struct net_device *netdev,
240 struct ethtool_drvinfo *drvinfo)
241{
242 struct igbvf_adapter *adapter = netdev_priv(netdev);
243 char firmware_version[32] = "N/A";
244
245 strncpy(drvinfo->driver, igbvf_driver_name, 32);
246 strncpy(drvinfo->version, igbvf_driver_version, 32);
247 strncpy(drvinfo->fw_version, firmware_version, 32);
248 strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
249 drvinfo->regdump_len = igbvf_get_regs_len(netdev);
250 drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
251}
252
253static void igbvf_get_ringparam(struct net_device *netdev,
254 struct ethtool_ringparam *ring)
255{
256 struct igbvf_adapter *adapter = netdev_priv(netdev);
257 struct igbvf_ring *tx_ring = adapter->tx_ring;
258 struct igbvf_ring *rx_ring = adapter->rx_ring;
259
260 ring->rx_max_pending = IGBVF_MAX_RXD;
261 ring->tx_max_pending = IGBVF_MAX_TXD;
262 ring->rx_mini_max_pending = 0;
263 ring->rx_jumbo_max_pending = 0;
264 ring->rx_pending = rx_ring->count;
265 ring->tx_pending = tx_ring->count;
266 ring->rx_mini_pending = 0;
267 ring->rx_jumbo_pending = 0;
268}
269
270static int igbvf_set_ringparam(struct net_device *netdev,
271 struct ethtool_ringparam *ring)
272{
273 struct igbvf_adapter *adapter = netdev_priv(netdev);
274 struct igbvf_ring *temp_ring;
275 int err = 0;
276 u32 new_rx_count, new_tx_count;
277
278 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
279 return -EINVAL;
280
281 new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
282 new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
283 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
284
285 new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
286 new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
287 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
288
289 if ((new_tx_count == adapter->tx_ring->count) &&
290 (new_rx_count == adapter->rx_ring->count)) {
291 /* nothing to do */
292 return 0;
293 }
294
295 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
296 msleep(1);
297
298 if (!netif_running(adapter->netdev)) {
299 adapter->tx_ring->count = new_tx_count;
300 adapter->rx_ring->count = new_rx_count;
301 goto clear_reset;
302 }
303
304 temp_ring = vmalloc(sizeof(struct igbvf_ring));
305 if (!temp_ring) {
306 err = -ENOMEM;
307 goto clear_reset;
308 }
309
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 }
342err_setup:
343 igbvf_up(adapter);
344 vfree(temp_ring);
345clear_reset:
346 clear_bit(__IGBVF_RESETTING, &adapter->state);
347 return err;
348}
349
350static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
351{
352 struct e1000_hw *hw = &adapter->hw;
353 *data = 0;
354
355 hw->mac.ops.check_for_link(hw);
356
357 if (!(er32(STATUS) & E1000_STATUS_LU))
358 *data = 1;
359
360 return *data;
361}
362
363static void igbvf_diag_test(struct net_device *netdev,
364 struct ethtool_test *eth_test, u64 *data)
365{
366 struct igbvf_adapter *adapter = netdev_priv(netdev);
367
368 set_bit(__IGBVF_TESTING, &adapter->state);
369
370 /*
371 * Link test performed before hardware reset so autoneg doesn't
372 * interfere with test result
373 */
374 if (igbvf_link_test(adapter, &data[0]))
375 eth_test->flags |= ETH_TEST_FL_FAILED;
376
377 clear_bit(__IGBVF_TESTING, &adapter->state);
378 msleep_interruptible(4 * 1000);
379}
380
381static void igbvf_get_wol(struct net_device *netdev,
382 struct ethtool_wolinfo *wol)
383{
384 wol->supported = 0;
385 wol->wolopts = 0;
386}
387
388static int igbvf_set_wol(struct net_device *netdev,
389 struct ethtool_wolinfo *wol)
390{
391 return -EOPNOTSUPP;
392}
393
394static int igbvf_get_coalesce(struct net_device *netdev,
395 struct ethtool_coalesce *ec)
396{
397 struct igbvf_adapter *adapter = netdev_priv(netdev);
398
399 if (adapter->itr_setting <= 3)
400 ec->rx_coalesce_usecs = adapter->itr_setting;
401 else
402 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
403
404 return 0;
405}
406
407static int igbvf_set_coalesce(struct net_device *netdev,
408 struct ethtool_coalesce *ec)
409{
410 struct igbvf_adapter *adapter = netdev_priv(netdev);
411 struct e1000_hw *hw = &adapter->hw;
412
413 if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
414 ((ec->rx_coalesce_usecs > 3) &&
415 (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
416 (ec->rx_coalesce_usecs == 2))
417 return -EINVAL;
418
419 /* convert to rate of irq's per second */
420 if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
421 adapter->itr = IGBVF_START_ITR;
422 adapter->itr_setting = ec->rx_coalesce_usecs;
423 } else {
424 adapter->itr = ec->rx_coalesce_usecs << 2;
425 adapter->itr_setting = adapter->itr;
426 }
427
428 writel(adapter->itr,
429 hw->hw_addr + adapter->rx_ring[0].itr_register);
430
431 return 0;
432}
433
434static int igbvf_nway_reset(struct net_device *netdev)
435{
436 struct igbvf_adapter *adapter = netdev_priv(netdev);
437 if (netif_running(netdev))
438 igbvf_reinit_locked(adapter);
439 return 0;
440}
441
442
443static void igbvf_get_ethtool_stats(struct net_device *netdev,
444 struct ethtool_stats *stats,
445 u64 *data)
446{
447 struct igbvf_adapter *adapter = netdev_priv(netdev);
448 int i;
449
450 igbvf_update_stats(adapter);
451 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
452 char *p = (char *)adapter +
453 igbvf_gstrings_stats[i].stat_offset;
454 char *b = (char *)adapter +
455 igbvf_gstrings_stats[i].base_stat_offset;
456 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
457 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
458 (*(u32 *)p - *(u32 *)b));
459 }
460
461}
462
463static int igbvf_get_sset_count(struct net_device *dev, int stringset)
464{
465 switch(stringset) {
466 case ETH_SS_TEST:
467 return IGBVF_TEST_LEN;
468 case ETH_SS_STATS:
469 return IGBVF_GLOBAL_STATS_LEN;
470 default:
471 return -EINVAL;
472 }
473}
474
475static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
476 u8 *data)
477{
478 u8 *p = data;
479 int i;
480
481 switch (stringset) {
482 case ETH_SS_TEST:
483 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
484 break;
485 case ETH_SS_STATS:
486 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
487 memcpy(p, igbvf_gstrings_stats[i].stat_string,
488 ETH_GSTRING_LEN);
489 p += ETH_GSTRING_LEN;
490 }
491 break;
492 }
493}
494
495static const struct ethtool_ops igbvf_ethtool_ops = {
496 .get_settings = igbvf_get_settings,
497 .set_settings = igbvf_set_settings,
498 .get_drvinfo = igbvf_get_drvinfo,
499 .get_regs_len = igbvf_get_regs_len,
500 .get_regs = igbvf_get_regs,
501 .get_wol = igbvf_get_wol,
502 .set_wol = igbvf_set_wol,
503 .get_msglevel = igbvf_get_msglevel,
504 .set_msglevel = igbvf_set_msglevel,
505 .nway_reset = igbvf_nway_reset,
506 .get_link = ethtool_op_get_link,
507 .get_eeprom_len = igbvf_get_eeprom_len,
508 .get_eeprom = igbvf_get_eeprom,
509 .set_eeprom = igbvf_set_eeprom,
510 .get_ringparam = igbvf_get_ringparam,
511 .set_ringparam = igbvf_set_ringparam,
512 .get_pauseparam = igbvf_get_pauseparam,
513 .set_pauseparam = igbvf_set_pauseparam,
514 .get_rx_csum = igbvf_get_rx_csum,
515 .set_rx_csum = igbvf_set_rx_csum,
516 .get_tx_csum = igbvf_get_tx_csum,
517 .set_tx_csum = igbvf_set_tx_csum,
518 .get_sg = ethtool_op_get_sg,
519 .set_sg = ethtool_op_set_sg,
520 .get_tso = ethtool_op_get_tso,
521 .set_tso = igbvf_set_tso,
522 .self_test = igbvf_diag_test,
523 .get_sset_count = igbvf_get_sset_count,
524 .get_strings = igbvf_get_strings,
525 .get_ethtool_stats = igbvf_get_ethtool_stats,
526 .get_coalesce = igbvf_get_coalesce,
527 .set_coalesce = igbvf_set_coalesce,
528};
529
530void igbvf_set_ethtool_ops(struct net_device *netdev)
531{
532 /* have to "undeclare" const on this struct to remove warnings */
533 SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
534}