Loading...
Note: File does not exist in v3.1.
1// SPDX-License-Identifier: GPL-2.0
2/*******************************************************************************
3
4 Intel(R) 82576 Virtual Function Linux driver
5 Copyright(c) 2009 - 2012 Intel Corporation.
6
7 This program is free software; you can redistribute it and/or modify it
8 under the terms and conditions of the GNU General Public License,
9 version 2, as published by the Free Software Foundation.
10
11 This program is distributed in the hope it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 more details.
15
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, see <http://www.gnu.org/licenses/>.
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
39struct igbvf_stats {
40 char stat_string[ETH_GSTRING_LEN];
41 int sizeof_stat;
42 int stat_offset;
43 int base_stat_offset;
44};
45
46#define IGBVF_STAT(current, base) \
47 sizeof(((struct igbvf_adapter *)0)->current), \
48 offsetof(struct igbvf_adapter, current), \
49 offsetof(struct igbvf_adapter, base)
50
51static const struct igbvf_stats igbvf_gstrings_stats[] = {
52 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
53 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
54 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
55 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
56 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
57 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
58 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
59 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
60 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
61 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
62 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
63 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
64 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
65};
66
67#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
68
69static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
70 "Link test (on/offline)"
71};
72
73#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
74
75static int igbvf_get_link_ksettings(struct net_device *netdev,
76 struct ethtool_link_ksettings *cmd)
77{
78 struct igbvf_adapter *adapter = netdev_priv(netdev);
79 struct e1000_hw *hw = &adapter->hw;
80 u32 status;
81
82 ethtool_link_ksettings_zero_link_mode(cmd, supported);
83 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
84 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
85 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);
86
87 cmd->base.port = -1;
88
89 status = er32(STATUS);
90 if (status & E1000_STATUS_LU) {
91 if (status & E1000_STATUS_SPEED_1000)
92 cmd->base.speed = SPEED_1000;
93 else if (status & E1000_STATUS_SPEED_100)
94 cmd->base.speed = SPEED_100;
95 else
96 cmd->base.speed = SPEED_10;
97
98 if (status & E1000_STATUS_FD)
99 cmd->base.duplex = DUPLEX_FULL;
100 else
101 cmd->base.duplex = DUPLEX_HALF;
102 } else {
103 cmd->base.speed = SPEED_UNKNOWN;
104 cmd->base.duplex = DUPLEX_UNKNOWN;
105 }
106
107 cmd->base.autoneg = AUTONEG_DISABLE;
108
109 return 0;
110}
111
112static int igbvf_set_link_ksettings(struct net_device *netdev,
113 const struct ethtool_link_ksettings *cmd)
114{
115 return -EOPNOTSUPP;
116}
117
118static void igbvf_get_pauseparam(struct net_device *netdev,
119 struct ethtool_pauseparam *pause)
120{
121}
122
123static int igbvf_set_pauseparam(struct net_device *netdev,
124 struct ethtool_pauseparam *pause)
125{
126 return -EOPNOTSUPP;
127}
128
129static u32 igbvf_get_msglevel(struct net_device *netdev)
130{
131 struct igbvf_adapter *adapter = netdev_priv(netdev);
132
133 return adapter->msg_enable;
134}
135
136static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
137{
138 struct igbvf_adapter *adapter = netdev_priv(netdev);
139
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;
155
156 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
157
158 regs->version = (1u << 24) |
159 (adapter->pdev->revision << 16) |
160 adapter->pdev->device;
161
162 regs_buff[0] = er32(CTRL);
163 regs_buff[1] = er32(STATUS);
164
165 regs_buff[2] = er32(RDLEN(0));
166 regs_buff[3] = er32(RDH(0));
167 regs_buff[4] = er32(RDT(0));
168
169 regs_buff[5] = er32(TDLEN(0));
170 regs_buff[6] = er32(TDH(0));
171 regs_buff[7] = er32(TDT(0));
172}
173
174static int igbvf_get_eeprom_len(struct net_device *netdev)
175{
176 return 0;
177}
178
179static int igbvf_get_eeprom(struct net_device *netdev,
180 struct ethtool_eeprom *eeprom, u8 *bytes)
181{
182 return -EOPNOTSUPP;
183}
184
185static int igbvf_set_eeprom(struct net_device *netdev,
186 struct ethtool_eeprom *eeprom, u8 *bytes)
187{
188 return -EOPNOTSUPP;
189}
190
191static void igbvf_get_drvinfo(struct net_device *netdev,
192 struct ethtool_drvinfo *drvinfo)
193{
194 struct igbvf_adapter *adapter = netdev_priv(netdev);
195
196 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver));
197 strlcpy(drvinfo->version, igbvf_driver_version,
198 sizeof(drvinfo->version));
199 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
200 sizeof(drvinfo->bus_info));
201}
202
203static void igbvf_get_ringparam(struct net_device *netdev,
204 struct ethtool_ringparam *ring)
205{
206 struct igbvf_adapter *adapter = netdev_priv(netdev);
207 struct igbvf_ring *tx_ring = adapter->tx_ring;
208 struct igbvf_ring *rx_ring = adapter->rx_ring;
209
210 ring->rx_max_pending = IGBVF_MAX_RXD;
211 ring->tx_max_pending = IGBVF_MAX_TXD;
212 ring->rx_pending = rx_ring->count;
213 ring->tx_pending = tx_ring->count;
214}
215
216static int igbvf_set_ringparam(struct net_device *netdev,
217 struct ethtool_ringparam *ring)
218{
219 struct igbvf_adapter *adapter = netdev_priv(netdev);
220 struct igbvf_ring *temp_ring;
221 int err = 0;
222 u32 new_rx_count, new_tx_count;
223
224 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
225 return -EINVAL;
226
227 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD);
228 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD);
229 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
230
231 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD);
232 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD);
233 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
234
235 if ((new_tx_count == adapter->tx_ring->count) &&
236 (new_rx_count == adapter->rx_ring->count)) {
237 /* nothing to do */
238 return 0;
239 }
240
241 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
242 usleep_range(1000, 2000);
243
244 if (!netif_running(adapter->netdev)) {
245 adapter->tx_ring->count = new_tx_count;
246 adapter->rx_ring->count = new_rx_count;
247 goto clear_reset;
248 }
249
250 temp_ring = vmalloc(sizeof(struct igbvf_ring));
251 if (!temp_ring) {
252 err = -ENOMEM;
253 goto clear_reset;
254 }
255
256 igbvf_down(adapter);
257
258 /* We can't just free everything and then setup again,
259 * because the ISRs in MSI-X mode get passed pointers
260 * to the Tx and Rx ring structs.
261 */
262 if (new_tx_count != adapter->tx_ring->count) {
263 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
264
265 temp_ring->count = new_tx_count;
266 err = igbvf_setup_tx_resources(adapter, temp_ring);
267 if (err)
268 goto err_setup;
269
270 igbvf_free_tx_resources(adapter->tx_ring);
271
272 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
273 }
274
275 if (new_rx_count != adapter->rx_ring->count) {
276 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
277
278 temp_ring->count = new_rx_count;
279 err = igbvf_setup_rx_resources(adapter, temp_ring);
280 if (err)
281 goto err_setup;
282
283 igbvf_free_rx_resources(adapter->rx_ring);
284
285 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring));
286 }
287err_setup:
288 igbvf_up(adapter);
289 vfree(temp_ring);
290clear_reset:
291 clear_bit(__IGBVF_RESETTING, &adapter->state);
292 return err;
293}
294
295static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
296{
297 struct e1000_hw *hw = &adapter->hw;
298 *data = 0;
299
300 spin_lock_bh(&hw->mbx_lock);
301
302 hw->mac.ops.check_for_link(hw);
303
304 spin_unlock_bh(&hw->mbx_lock);
305
306 if (!(er32(STATUS) & E1000_STATUS_LU))
307 *data = 1;
308
309 return *data;
310}
311
312static void igbvf_diag_test(struct net_device *netdev,
313 struct ethtool_test *eth_test, u64 *data)
314{
315 struct igbvf_adapter *adapter = netdev_priv(netdev);
316
317 set_bit(__IGBVF_TESTING, &adapter->state);
318
319 /* Link test performed before hardware reset so autoneg doesn't
320 * interfere with test result
321 */
322 if (igbvf_link_test(adapter, &data[0]))
323 eth_test->flags |= ETH_TEST_FL_FAILED;
324
325 clear_bit(__IGBVF_TESTING, &adapter->state);
326 msleep_interruptible(4 * 1000);
327}
328
329static void igbvf_get_wol(struct net_device *netdev,
330 struct ethtool_wolinfo *wol)
331{
332 wol->supported = 0;
333 wol->wolopts = 0;
334}
335
336static int igbvf_set_wol(struct net_device *netdev,
337 struct ethtool_wolinfo *wol)
338{
339 return -EOPNOTSUPP;
340}
341
342static int igbvf_get_coalesce(struct net_device *netdev,
343 struct ethtool_coalesce *ec)
344{
345 struct igbvf_adapter *adapter = netdev_priv(netdev);
346
347 if (adapter->requested_itr <= 3)
348 ec->rx_coalesce_usecs = adapter->requested_itr;
349 else
350 ec->rx_coalesce_usecs = adapter->current_itr >> 2;
351
352 return 0;
353}
354
355static int igbvf_set_coalesce(struct net_device *netdev,
356 struct ethtool_coalesce *ec)
357{
358 struct igbvf_adapter *adapter = netdev_priv(netdev);
359 struct e1000_hw *hw = &adapter->hw;
360
361 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) &&
362 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) {
363 adapter->current_itr = ec->rx_coalesce_usecs << 2;
364 adapter->requested_itr = 1000000000 /
365 (adapter->current_itr * 256);
366 } else if ((ec->rx_coalesce_usecs == 3) ||
367 (ec->rx_coalesce_usecs == 2)) {
368 adapter->current_itr = IGBVF_START_ITR;
369 adapter->requested_itr = ec->rx_coalesce_usecs;
370 } else if (ec->rx_coalesce_usecs == 0) {
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;
378 adapter->requested_itr = 1000000000 /
379 (adapter->current_itr * 256);
380 } else {
381 return -EINVAL;
382 }
383
384 writel(adapter->current_itr,
385 hw->hw_addr + adapter->rx_ring->itr_register);
386
387 return 0;
388}
389
390static int igbvf_nway_reset(struct net_device *netdev)
391{
392 struct igbvf_adapter *adapter = netdev_priv(netdev);
393
394 if (netif_running(netdev))
395 igbvf_reinit_locked(adapter);
396 return 0;
397}
398
399static void igbvf_get_ethtool_stats(struct net_device *netdev,
400 struct ethtool_stats *stats,
401 u64 *data)
402{
403 struct igbvf_adapter *adapter = netdev_priv(netdev);
404 int i;
405
406 igbvf_update_stats(adapter);
407 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
408 char *p = (char *)adapter +
409 igbvf_gstrings_stats[i].stat_offset;
410 char *b = (char *)adapter +
411 igbvf_gstrings_stats[i].base_stat_offset;
412 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
413 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
414 (*(u32 *)p - *(u32 *)b));
415 }
416}
417
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
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_drvinfo = igbvf_get_drvinfo,
452 .get_regs_len = igbvf_get_regs_len,
453 .get_regs = igbvf_get_regs,
454 .get_wol = igbvf_get_wol,
455 .set_wol = igbvf_set_wol,
456 .get_msglevel = igbvf_get_msglevel,
457 .set_msglevel = igbvf_set_msglevel,
458 .nway_reset = igbvf_nway_reset,
459 .get_link = ethtool_op_get_link,
460 .get_eeprom_len = igbvf_get_eeprom_len,
461 .get_eeprom = igbvf_get_eeprom,
462 .set_eeprom = igbvf_set_eeprom,
463 .get_ringparam = igbvf_get_ringparam,
464 .set_ringparam = igbvf_set_ringparam,
465 .get_pauseparam = igbvf_get_pauseparam,
466 .set_pauseparam = igbvf_set_pauseparam,
467 .self_test = igbvf_diag_test,
468 .get_sset_count = igbvf_get_sset_count,
469 .get_strings = igbvf_get_strings,
470 .get_ethtool_stats = igbvf_get_ethtool_stats,
471 .get_coalesce = igbvf_get_coalesce,
472 .set_coalesce = igbvf_set_coalesce,
473 .get_link_ksettings = igbvf_get_link_ksettings,
474 .set_link_ksettings = igbvf_set_link_ksettings,
475};
476
477void igbvf_set_ethtool_ops(struct net_device *netdev)
478{
479 netdev->ethtool_ops = &igbvf_ethtool_ops;
480}