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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / intel / fm10k / fm10k_ethtool.c
blob37fbc646deb91973207f3d9e9307ef0d8c5a509b
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
3
4 #include <linux/vmalloc.h>
5
6 #include "fm10k.h"
7
8 struct fm10k_stats {
9 /* The stat_string is expected to be a format string formatted using
10 * vsnprintf by fm10k_add_stat_strings. Every member of a stats array
11 * should use the same format specifiers as they will be formatted
12 * using the same variadic arguments.
13 */
14 char stat_string[ETH_GSTRING_LEN];
15 int sizeof_stat;
16 int stat_offset;
17 };
18
19 #define FM10K_STAT_FIELDS(_type, _name, _stat) { \
20 .stat_string = _name, \
21 .sizeof_stat = sizeof_field(_type, _stat), \
22 .stat_offset = offsetof(_type, _stat) \
23 }
24
25 /* netdevice statistics */
26 #define FM10K_NETDEV_STAT(_net_stat) \
27 FM10K_STAT_FIELDS(struct net_device_stats, __stringify(_net_stat), \
28 _net_stat)
29
30 static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
31 FM10K_NETDEV_STAT(tx_packets),
32 FM10K_NETDEV_STAT(tx_bytes),
33 FM10K_NETDEV_STAT(tx_errors),
34 FM10K_NETDEV_STAT(rx_packets),
35 FM10K_NETDEV_STAT(rx_bytes),
36 FM10K_NETDEV_STAT(rx_errors),
37 FM10K_NETDEV_STAT(rx_dropped),
38
39 /* detailed Rx errors */
40 FM10K_NETDEV_STAT(rx_length_errors),
41 FM10K_NETDEV_STAT(rx_crc_errors),
42 FM10K_NETDEV_STAT(rx_fifo_errors),
43 };
44
45 #define FM10K_NETDEV_STATS_LEN ARRAY_SIZE(fm10k_gstrings_net_stats)
46
47 /* General interface statistics */
48 #define FM10K_STAT(_name, _stat) \
49 FM10K_STAT_FIELDS(struct fm10k_intfc, _name, _stat)
50
51 static const struct fm10k_stats fm10k_gstrings_global_stats[] = {
52 FM10K_STAT("tx_restart_queue", restart_queue),
53 FM10K_STAT("tx_busy", tx_busy),
54 FM10K_STAT("tx_csum_errors", tx_csum_errors),
55 FM10K_STAT("rx_alloc_failed", alloc_failed),
56 FM10K_STAT("rx_csum_errors", rx_csum_errors),
57
58 FM10K_STAT("tx_packets_nic", tx_packets_nic),
59 FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
60 FM10K_STAT("rx_packets_nic", rx_packets_nic),
61 FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
62 FM10K_STAT("rx_drops_nic", rx_drops_nic),
63 FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
64 FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
65
66 FM10K_STAT("swapi_status", hw.swapi.status),
67 FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
68 FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
69
70 FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending),
71
72 FM10K_STAT("tx_hang_count", tx_timeout_count),
73 };
74
75 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = {
76 FM10K_STAT("timeout", stats.timeout.count),
77 FM10K_STAT("ur", stats.ur.count),
78 FM10K_STAT("ca", stats.ca.count),
79 FM10K_STAT("um", stats.um.count),
80 FM10K_STAT("xec", stats.xec.count),
81 FM10K_STAT("vlan_drop", stats.vlan_drop.count),
82 FM10K_STAT("loopback_drop", stats.loopback_drop.count),
83 FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
84 };
85
86 /* mailbox statistics */
87 #define FM10K_MBX_STAT(_name, _stat) \
88 FM10K_STAT_FIELDS(struct fm10k_mbx_info, _name, _stat)
89
90 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
91 FM10K_MBX_STAT("mbx_tx_busy", tx_busy),
92 FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped),
93 FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
94 FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
95 FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
96 FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
97 FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
98 FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
99 FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
100 };
101
102 /* per-queue ring statistics */
103 #define FM10K_QUEUE_STAT(_name, _stat) \
104 FM10K_STAT_FIELDS(struct fm10k_ring, _name, _stat)
105
106 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = {
107 FM10K_QUEUE_STAT("%s_queue_%u_packets", stats.packets),
108 FM10K_QUEUE_STAT("%s_queue_%u_bytes", stats.bytes),
109 };
110
111 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)
112 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats)
113 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats)
114 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats)
115
116 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
117 FM10K_NETDEV_STATS_LEN + \
118 FM10K_MBX_STATS_LEN)
119
120 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = {
121 "Mailbox test (on/offline)"
122 };
123
124 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN)
125
126 enum fm10k_self_test_types {
127 FM10K_TEST_MBX,
128 FM10K_TEST_MAX = FM10K_TEST_LEN
129 };
130
131 enum {
132 FM10K_PRV_FLAG_LEN,
133 };
134
135 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = {
136 };
137
138 static void __fm10k_add_stat_strings(u8 **p, const struct fm10k_stats stats[],
139 const unsigned int size, ...)
140 {
141 unsigned int i;
142
143 for (i = 0; i < size; i++) {
144 va_list args;
145
146 va_start(args, size);
147 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
148 *p += ETH_GSTRING_LEN;
149 va_end(args);
150 }
151 }
152
153 #define fm10k_add_stat_strings(p, stats, ...) \
154 __fm10k_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
155
156 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data)
157 {
158 struct fm10k_intfc *interface = netdev_priv(dev);
159 unsigned int i;
160
161 fm10k_add_stat_strings(&data, fm10k_gstrings_net_stats);
162
163 fm10k_add_stat_strings(&data, fm10k_gstrings_global_stats);
164
165 fm10k_add_stat_strings(&data, fm10k_gstrings_mbx_stats);
166
167 if (interface->hw.mac.type != fm10k_mac_vf)
168 fm10k_add_stat_strings(&data, fm10k_gstrings_pf_stats);
169
170 for (i = 0; i < interface->hw.mac.max_queues; i++) {
171 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
172 "tx", i);
173
174 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats,
175 "rx", i);
176 }
177 }
178
179 static void fm10k_get_strings(struct net_device *dev,
180 u32 stringset, u8 *data)
181 {
182 switch (stringset) {
183 case ETH_SS_TEST:
184 memcpy(data, fm10k_gstrings_test,
185 FM10K_TEST_LEN * ETH_GSTRING_LEN);
186 break;
187 case ETH_SS_STATS:
188 fm10k_get_stat_strings(dev, data);
189 break;
190 case ETH_SS_PRIV_FLAGS:
191 memcpy(data, fm10k_prv_flags,
192 FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN);
193 break;
194 }
195 }
196
197 static int fm10k_get_sset_count(struct net_device *dev, int sset)
198 {
199 struct fm10k_intfc *interface = netdev_priv(dev);
200 struct fm10k_hw *hw = &interface->hw;
201 int stats_len = FM10K_STATIC_STATS_LEN;
202
203 switch (sset) {
204 case ETH_SS_TEST:
205 return FM10K_TEST_LEN;
206 case ETH_SS_STATS:
207 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN;
208
209 if (hw->mac.type != fm10k_mac_vf)
210 stats_len += FM10K_PF_STATS_LEN;
211
212 return stats_len;
213 case ETH_SS_PRIV_FLAGS:
214 return FM10K_PRV_FLAG_LEN;
215 default:
216 return -EOPNOTSUPP;
217 }
218 }
219
220 static void __fm10k_add_ethtool_stats(u64 **data, void *pointer,
221 const struct fm10k_stats stats[],
222 const unsigned int size)
223 {
224 unsigned int i;
225
226 if (!pointer) {
227 /* memory is not zero allocated so we have to clear it */
228 for (i = 0; i < size; i++)
229 *((*data)++) = 0;
230 return;
231 }
232
233 for (i = 0; i < size; i++) {
234 char *p = (char *)pointer + stats[i].stat_offset;
235
236 switch (stats[i].sizeof_stat) {
237 case sizeof(u64):
238 *((*data)++) = *(u64 *)p;
239 break;
240 case sizeof(u32):
241 *((*data)++) = *(u32 *)p;
242 break;
243 case sizeof(u16):
244 *((*data)++) = *(u16 *)p;
245 break;
246 case sizeof(u8):
247 *((*data)++) = *(u8 *)p;
248 break;
249 default:
250 WARN_ONCE(1, "unexpected stat size for %s",
251 stats[i].stat_string);
252 *((*data)++) = 0;
253 }
254 }
255 }
256
257 #define fm10k_add_ethtool_stats(data, pointer, stats) \
258 __fm10k_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
259
260 static void fm10k_get_ethtool_stats(struct net_device *netdev,
261 struct ethtool_stats __always_unused *stats,
262 u64 *data)
263 {
264 struct fm10k_intfc *interface = netdev_priv(netdev);
265 struct net_device_stats *net_stats = &netdev->stats;
266 int i;
267
268 fm10k_update_stats(interface);
269
270 fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats);
271
272 fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats);
273
274 fm10k_add_ethtool_stats(&data, &interface->hw.mbx,
275 fm10k_gstrings_mbx_stats);
276
277 if (interface->hw.mac.type != fm10k_mac_vf) {
278 fm10k_add_ethtool_stats(&data, interface,
279 fm10k_gstrings_pf_stats);
280 }
281
282 for (i = 0; i < interface->hw.mac.max_queues; i++) {
283 struct fm10k_ring *ring;
284
285 ring = interface->tx_ring[i];
286 fm10k_add_ethtool_stats(&data, ring,
287 fm10k_gstrings_queue_stats);
288
289 ring = interface->rx_ring[i];
290 fm10k_add_ethtool_stats(&data, ring,
291 fm10k_gstrings_queue_stats);
292 }
293 }
294
295 /* If function below adds more registers this define needs to be updated */
296 #define FM10K_REGS_LEN_Q 29
297
298 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
299 {
300 int idx = 0;
301
302 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
303 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
304 buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
305 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
306 buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
307 buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
308 buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
309 buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
310 buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
311 buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
312 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
313 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
314 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
315 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
316 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
317 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
318 buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
319 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
320 buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
321 buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
322 buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
323 buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
324 buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
325 buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
326 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
327 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
328 buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
329 buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
330 buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
331
332 BUG_ON(idx != FM10K_REGS_LEN_Q);
333 }
334
335 /* If function above adds more registers this define needs to be updated */
336 #define FM10K_REGS_LEN_VSI 43
337
338 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
339 {
340 int idx = 0, j;
341
342 buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
343 for (j = 0; j < 10; j++)
344 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
345 for (j = 0; j < 32; j++)
346 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
347
348 BUG_ON(idx != FM10K_REGS_LEN_VSI);
349 }
350
351 static void fm10k_get_regs(struct net_device *netdev,
352 struct ethtool_regs *regs, void *p)
353 {
354 struct fm10k_intfc *interface = netdev_priv(netdev);
355 struct fm10k_hw *hw = &interface->hw;
356 u32 *buff = p;
357 u16 i;
358
359 regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id;
360
361 switch (hw->mac.type) {
362 case fm10k_mac_pf:
363 /* General PF Registers */
364 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
365 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
366 *(buff++) = fm10k_read_reg(hw, FM10K_GCR);
367 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
368
369 for (i = 0; i < 8; i++) {
370 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
371 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
372 }
373
374 for (i = 0; i < 65; i++) {
375 fm10k_get_reg_vsi(hw, buff, i);
376 buff += FM10K_REGS_LEN_VSI;
377 }
378
379 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
380 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
381
382 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
383 fm10k_get_reg_q(hw, buff, i);
384 buff += FM10K_REGS_LEN_Q;
385 }
386
387 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
388
389 for (i = 0; i < 8; i++)
390 *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
391
392 /* Interrupt Throttling Registers */
393 for (i = 0; i < 130; i++)
394 *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
395
396 break;
397 case fm10k_mac_vf:
398 /* General VF registers */
399 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL);
400 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP);
401 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME);
402
403 /* Interrupt Throttling Registers */
404 for (i = 0; i < 8; i++)
405 *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i));
406
407 fm10k_get_reg_vsi(hw, buff, 0);
408 buff += FM10K_REGS_LEN_VSI;
409
410 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) {
411 if (i < hw->mac.max_queues)
412 fm10k_get_reg_q(hw, buff, i);
413 else
414 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q);
415 buff += FM10K_REGS_LEN_Q;
416 }
417
418 break;
419 default:
420 return;
421 }
422 }
423
424 /* If function above adds more registers these define need to be updated */
425 #define FM10K_REGS_LEN_PF \
426 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
427 #define FM10K_REGS_LEN_VF \
428 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q))
429
430 static int fm10k_get_regs_len(struct net_device *netdev)
431 {
432 struct fm10k_intfc *interface = netdev_priv(netdev);
433 struct fm10k_hw *hw = &interface->hw;
434
435 switch (hw->mac.type) {
436 case fm10k_mac_pf:
437 return FM10K_REGS_LEN_PF * sizeof(u32);
438 case fm10k_mac_vf:
439 return FM10K_REGS_LEN_VF * sizeof(u32);
440 default:
441 return 0;
442 }
443 }
444
445 static void fm10k_get_drvinfo(struct net_device *dev,
446 struct ethtool_drvinfo *info)
447 {
448 struct fm10k_intfc *interface = netdev_priv(dev);
449
450 strncpy(info->driver, fm10k_driver_name,
451 sizeof(info->driver) - 1);
452 strncpy(info->version, fm10k_driver_version,
453 sizeof(info->version) - 1);
454 strncpy(info->bus_info, pci_name(interface->pdev),
455 sizeof(info->bus_info) - 1);
456 }
457
458 static void fm10k_get_pauseparam(struct net_device *dev,
459 struct ethtool_pauseparam *pause)
460 {
461 struct fm10k_intfc *interface = netdev_priv(dev);
462
463 /* record fixed values for autoneg and tx pause */
464 pause->autoneg = 0;
465 pause->tx_pause = 1;
466
467 pause->rx_pause = interface->rx_pause ? 1 : 0;
468 }
469
470 static int fm10k_set_pauseparam(struct net_device *dev,
471 struct ethtool_pauseparam *pause)
472 {
473 struct fm10k_intfc *interface = netdev_priv(dev);
474 struct fm10k_hw *hw = &interface->hw;
475
476 if (pause->autoneg || !pause->tx_pause)
477 return -EINVAL;
478
479 /* we can only support pause on the PF to avoid head-of-line blocking */
480 if (hw->mac.type == fm10k_mac_pf)
481 interface->rx_pause = pause->rx_pause ? ~0 : 0;
482 else if (pause->rx_pause)
483 return -EINVAL;
484
485 if (netif_running(dev))
486 fm10k_update_rx_drop_en(interface);
487
488 return 0;
489 }
490
491 static u32 fm10k_get_msglevel(struct net_device *netdev)
492 {
493 struct fm10k_intfc *interface = netdev_priv(netdev);
494
495 return interface->msg_enable;
496 }
497
498 static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
499 {
500 struct fm10k_intfc *interface = netdev_priv(netdev);
501
502 interface->msg_enable = data;
503 }
504
505 static void fm10k_get_ringparam(struct net_device *netdev,
506 struct ethtool_ringparam *ring)
507 {
508 struct fm10k_intfc *interface = netdev_priv(netdev);
509
510 ring->rx_max_pending = FM10K_MAX_RXD;
511 ring->tx_max_pending = FM10K_MAX_TXD;
512 ring->rx_mini_max_pending = 0;
513 ring->rx_jumbo_max_pending = 0;
514 ring->rx_pending = interface->rx_ring_count;
515 ring->tx_pending = interface->tx_ring_count;
516 ring->rx_mini_pending = 0;
517 ring->rx_jumbo_pending = 0;
518 }
519
520 static int fm10k_set_ringparam(struct net_device *netdev,
521 struct ethtool_ringparam *ring)
522 {
523 struct fm10k_intfc *interface = netdev_priv(netdev);
524 struct fm10k_ring *temp_ring;
525 int i, err = 0;
526 u32 new_rx_count, new_tx_count;
527
528 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
529 return -EINVAL;
530
531 new_tx_count = clamp_t(u32, ring->tx_pending,
532 FM10K_MIN_TXD, FM10K_MAX_TXD);
533 new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
534
535 new_rx_count = clamp_t(u32, ring->rx_pending,
536 FM10K_MIN_RXD, FM10K_MAX_RXD);
537 new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
538
539 if ((new_tx_count == interface->tx_ring_count) &&
540 (new_rx_count == interface->rx_ring_count)) {
541 /* nothing to do */
542 return 0;
543 }
544
545 while (test_and_set_bit(__FM10K_RESETTING, interface->state))
546 usleep_range(1000, 2000);
547
548 if (!netif_running(interface->netdev)) {
549 for (i = 0; i < interface->num_tx_queues; i++)
550 interface->tx_ring[i]->count = new_tx_count;
551 for (i = 0; i < interface->num_rx_queues; i++)
552 interface->rx_ring[i]->count = new_rx_count;
553 interface->tx_ring_count = new_tx_count;
554 interface->rx_ring_count = new_rx_count;
555 goto clear_reset;
556 }
557
558 /* allocate temporary buffer to store rings in */
559 i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
560 temp_ring = vmalloc(array_size(i, sizeof(struct fm10k_ring)));
561
562 if (!temp_ring) {
563 err = -ENOMEM;
564 goto clear_reset;
565 }
566
567 fm10k_down(interface);
568
569 /* Setup new Tx resources and free the old Tx resources in that order.
570 * We can then assign the new resources to the rings via a memcpy.
571 * The advantage to this approach is that we are guaranteed to still
572 * have resources even in the case of an allocation failure.
573 */
574 if (new_tx_count != interface->tx_ring_count) {
575 for (i = 0; i < interface->num_tx_queues; i++) {
576 memcpy(&temp_ring[i], interface->tx_ring[i],
577 sizeof(struct fm10k_ring));
578
579 temp_ring[i].count = new_tx_count;
580 err = fm10k_setup_tx_resources(&temp_ring[i]);
581 if (err) {
582 while (i) {
583 i--;
584 fm10k_free_tx_resources(&temp_ring[i]);
585 }
586 goto err_setup;
587 }
588 }
589
590 for (i = 0; i < interface->num_tx_queues; i++) {
591 fm10k_free_tx_resources(interface->tx_ring[i]);
592
593 memcpy(interface->tx_ring[i], &temp_ring[i],
594 sizeof(struct fm10k_ring));
595 }
596
597 interface->tx_ring_count = new_tx_count;
598 }
599
600 /* Repeat the process for the Rx rings if needed */
601 if (new_rx_count != interface->rx_ring_count) {
602 for (i = 0; i < interface->num_rx_queues; i++) {
603 memcpy(&temp_ring[i], interface->rx_ring[i],
604 sizeof(struct fm10k_ring));
605
606 temp_ring[i].count = new_rx_count;
607 err = fm10k_setup_rx_resources(&temp_ring[i]);
608 if (err) {
609 while (i) {
610 i--;
611 fm10k_free_rx_resources(&temp_ring[i]);
612 }
613 goto err_setup;
614 }
615 }
616
617 for (i = 0; i < interface->num_rx_queues; i++) {
618 fm10k_free_rx_resources(interface->rx_ring[i]);
619
620 memcpy(interface->rx_ring[i], &temp_ring[i],
621 sizeof(struct fm10k_ring));
622 }
623
624 interface->rx_ring_count = new_rx_count;
625 }
626
627 err_setup:
628 fm10k_up(interface);
629 vfree(temp_ring);
630 clear_reset:
631 clear_bit(__FM10K_RESETTING, interface->state);
632 return err;
633 }
634
635 static int fm10k_get_coalesce(struct net_device *dev,
636 struct ethtool_coalesce *ec)
637 {
638 struct fm10k_intfc *interface = netdev_priv(dev);
639
640 ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr);
641 ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
642
643 ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr);
644 ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
645
646 return 0;
647 }
648
649 static int fm10k_set_coalesce(struct net_device *dev,
650 struct ethtool_coalesce *ec)
651 {
652 struct fm10k_intfc *interface = netdev_priv(dev);
653 u16 tx_itr, rx_itr;
654 int i;
655
656 /* verify limits */
657 if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
658 (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
659 return -EINVAL;
660
661 /* record settings */
662 tx_itr = ec->tx_coalesce_usecs;
663 rx_itr = ec->rx_coalesce_usecs;
664
665 /* set initial values for adaptive ITR */
666 if (ec->use_adaptive_tx_coalesce)
667 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT;
668
669 if (ec->use_adaptive_rx_coalesce)
670 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT;
671
672 /* update interface */
673 interface->tx_itr = tx_itr;
674 interface->rx_itr = rx_itr;
675
676 /* update q_vectors */
677 for (i = 0; i < interface->num_q_vectors; i++) {
678 struct fm10k_q_vector *qv = interface->q_vector[i];
679
680 qv->tx.itr = tx_itr;
681 qv->rx.itr = rx_itr;
682 }
683
684 return 0;
685 }
686
687 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface,
688 struct ethtool_rxnfc *cmd)
689 {
690 cmd->data = 0;
691
692 /* Report default options for RSS on fm10k */
693 switch (cmd->flow_type) {
694 case TCP_V4_FLOW:
695 case TCP_V6_FLOW:
696 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
697 /* fall through */
698 case UDP_V4_FLOW:
699 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
700 interface->flags))
701 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
702 /* fall through */
703 case SCTP_V4_FLOW:
704 case SCTP_V6_FLOW:
705 case AH_ESP_V4_FLOW:
706 case AH_ESP_V6_FLOW:
707 case AH_V4_FLOW:
708 case AH_V6_FLOW:
709 case ESP_V4_FLOW:
710 case ESP_V6_FLOW:
711 case IPV4_FLOW:
712 case IPV6_FLOW:
713 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
714 break;
715 case UDP_V6_FLOW:
716 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
717 interface->flags))
718 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
719 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
720 break;
721 default:
722 return -EINVAL;
723 }
724
725 return 0;
726 }
727
728 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
729 u32 __always_unused *rule_locs)
730 {
731 struct fm10k_intfc *interface = netdev_priv(dev);
732 int ret = -EOPNOTSUPP;
733
734 switch (cmd->cmd) {
735 case ETHTOOL_GRXRINGS:
736 cmd->data = interface->num_rx_queues;
737 ret = 0;
738 break;
739 case ETHTOOL_GRXFH:
740 ret = fm10k_get_rss_hash_opts(interface, cmd);
741 break;
742 default:
743 break;
744 }
745
746 return ret;
747 }
748
749 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface,
750 struct ethtool_rxnfc *nfc)
751 {
752 int rss_ipv4_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
753 interface->flags);
754 int rss_ipv6_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
755 interface->flags);
756
757 /* RSS does not support anything other than hashing
758 * to queues on src and dst IPs and ports
759 */
760 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
761 RXH_L4_B_0_1 | RXH_L4_B_2_3))
762 return -EINVAL;
763
764 switch (nfc->flow_type) {
765 case TCP_V4_FLOW:
766 case TCP_V6_FLOW:
767 if (!(nfc->data & RXH_IP_SRC) ||
768 !(nfc->data & RXH_IP_DST) ||
769 !(nfc->data & RXH_L4_B_0_1) ||
770 !(nfc->data & RXH_L4_B_2_3))
771 return -EINVAL;
772 break;
773 case UDP_V4_FLOW:
774 if (!(nfc->data & RXH_IP_SRC) ||
775 !(nfc->data & RXH_IP_DST))
776 return -EINVAL;
777 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
778 case 0:
779 clear_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
780 interface->flags);
781 break;
782 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
783 set_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
784 interface->flags);
785 break;
786 default:
787 return -EINVAL;
788 }
789 break;
790 case UDP_V6_FLOW:
791 if (!(nfc->data & RXH_IP_SRC) ||
792 !(nfc->data & RXH_IP_DST))
793 return -EINVAL;
794 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
795 case 0:
796 clear_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
797 interface->flags);
798 break;
799 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
800 set_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
801 interface->flags);
802 break;
803 default:
804 return -EINVAL;
805 }
806 break;
807 case AH_ESP_V4_FLOW:
808 case AH_V4_FLOW:
809 case ESP_V4_FLOW:
810 case SCTP_V4_FLOW:
811 case AH_ESP_V6_FLOW:
812 case AH_V6_FLOW:
813 case ESP_V6_FLOW:
814 case SCTP_V6_FLOW:
815 if (!(nfc->data & RXH_IP_SRC) ||
816 !(nfc->data & RXH_IP_DST) ||
817 (nfc->data & RXH_L4_B_0_1) ||
818 (nfc->data & RXH_L4_B_2_3))
819 return -EINVAL;
820 break;
821 default:
822 return -EINVAL;
823 }
824
825 /* If something changed we need to update the MRQC register. Note that
826 * test_bit() is guaranteed to return strictly 0 or 1, so testing for
827 * equality is safe.
828 */
829 if ((rss_ipv4_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
830 interface->flags)) ||
831 (rss_ipv6_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
832 interface->flags))) {
833 struct fm10k_hw *hw = &interface->hw;
834 bool warn = false;
835 u32 mrqc;
836
837 /* Perform hash on these packet types */
838 mrqc = FM10K_MRQC_IPV4 |
839 FM10K_MRQC_TCP_IPV4 |
840 FM10K_MRQC_IPV6 |
841 FM10K_MRQC_TCP_IPV6;
842
843 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP,
844 interface->flags)) {
845 mrqc |= FM10K_MRQC_UDP_IPV4;
846 warn = true;
847 }
848 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP,
849 interface->flags)) {
850 mrqc |= FM10K_MRQC_UDP_IPV6;
851 warn = true;
852 }
853
854 /* If we enable UDP RSS display a warning that this may cause
855 * fragmented UDP packets to arrive out of order.
856 */
857 if (warn)
858 netif_warn(interface, drv, interface->netdev,
859 "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
860
861 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
862 }
863
864 return 0;
865 }
866
867 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
868 {
869 struct fm10k_intfc *interface = netdev_priv(dev);
870 int ret = -EOPNOTSUPP;
871
872 switch (cmd->cmd) {
873 case ETHTOOL_SRXFH:
874 ret = fm10k_set_rss_hash_opt(interface, cmd);
875 break;
876 default:
877 break;
878 }
879
880 return ret;
881 }
882
883 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data)
884 {
885 struct fm10k_hw *hw = &interface->hw;
886 struct fm10k_mbx_info *mbx = &hw->mbx;
887 u32 attr_flag, test_msg[6];
888 unsigned long timeout;
889 int err = -EINVAL;
890
891 /* For now this is a VF only feature */
892 if (hw->mac.type != fm10k_mac_vf)
893 return 0;
894
895 /* loop through both nested and unnested attribute types */
896 for (attr_flag = BIT(FM10K_TEST_MSG_UNSET);
897 attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED);
898 attr_flag += attr_flag) {
899 /* generate message to be tested */
900 fm10k_tlv_msg_test_create(test_msg, attr_flag);
901
902 fm10k_mbx_lock(interface);
903 mbx->test_result = FM10K_NOT_IMPLEMENTED;
904 err = mbx->ops.enqueue_tx(hw, mbx, test_msg);
905 fm10k_mbx_unlock(interface);
906
907 /* wait up to 1 second for response */
908 timeout = jiffies + HZ;
909 do {
910 if (err < 0)
911 goto err_out;
912
913 usleep_range(500, 1000);
914
915 fm10k_mbx_lock(interface);
916 mbx->ops.process(hw, mbx);
917 fm10k_mbx_unlock(interface);
918
919 err = mbx->test_result;
920 if (!err)
921 break;
922 } while (time_is_after_jiffies(timeout));
923
924 /* reporting errors */
925 if (err)
926 goto err_out;
927 }
928
929 err_out:
930 *data = err < 0 ? (attr_flag) : (err > 0);
931 return err;
932 }
933
934 static void fm10k_self_test(struct net_device *dev,
935 struct ethtool_test *eth_test, u64 *data)
936 {
937 struct fm10k_intfc *interface = netdev_priv(dev);
938 struct fm10k_hw *hw = &interface->hw;
939
940 memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
941
942 if (FM10K_REMOVED(hw->hw_addr)) {
943 netif_err(interface, drv, dev,
944 "Interface removed - test blocked\n");
945 eth_test->flags |= ETH_TEST_FL_FAILED;
946 return;
947 }
948
949 if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX]))
950 eth_test->flags |= ETH_TEST_FL_FAILED;
951 }
952
953 static u32 fm10k_get_priv_flags(struct net_device *netdev)
954 {
955 return 0;
956 }
957
958 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags)
959 {
960 if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN))
961 return -EINVAL;
962
963 return 0;
964 }
965
966 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev)
967 {
968 return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
969 }
970
971 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir)
972 {
973 u16 rss_i = interface->ring_feature[RING_F_RSS].indices;
974 struct fm10k_hw *hw = &interface->hw;
975 u32 table[4];
976 int i, j;
977
978 /* record entries to reta table */
979 for (i = 0; i < FM10K_RETA_SIZE; i++) {
980 u32 reta, n;
981
982 /* generate a new table if we weren't given one */
983 for (j = 0; j < 4; j++) {
984 if (indir)
985 n = indir[4 * i + j];
986 else
987 n = ethtool_rxfh_indir_default(4 * i + j,
988 rss_i);
989
990 table[j] = n;
991 }
992
993 reta = table[0] |
994 (table[1] << 8) |
995 (table[2] << 16) |
996 (table[3] << 24);
997
998 if (interface->reta[i] == reta)
999 continue;
1000
1001 interface->reta[i] = reta;
1002 fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
1003 }
1004 }
1005
1006 static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
1007 {
1008 struct fm10k_intfc *interface = netdev_priv(netdev);
1009 int i;
1010
1011 if (!indir)
1012 return 0;
1013
1014 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
1015 u32 reta = interface->reta[i];
1016
1017 indir[0] = (reta << 24) >> 24;
1018 indir[1] = (reta << 16) >> 24;
1019 indir[2] = (reta << 8) >> 24;
1020 indir[3] = (reta) >> 24;
1021 }
1022
1023 return 0;
1024 }
1025
1026 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
1027 {
1028 struct fm10k_intfc *interface = netdev_priv(netdev);
1029 int i;
1030 u16 rss_i;
1031
1032 if (!indir)
1033 return 0;
1034
1035 /* Verify user input. */
1036 rss_i = interface->ring_feature[RING_F_RSS].indices;
1037 for (i = fm10k_get_reta_size(netdev); i--;) {
1038 if (indir[i] < rss_i)
1039 continue;
1040 return -EINVAL;
1041 }
1042
1043 fm10k_write_reta(interface, indir);
1044
1045 return 0;
1046 }
1047
1048 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev)
1049 {
1050 return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
1051 }
1052
1053 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key,
1054 u8 *hfunc)
1055 {
1056 struct fm10k_intfc *interface = netdev_priv(netdev);
1057 int i, err;
1058
1059 if (hfunc)
1060 *hfunc = ETH_RSS_HASH_TOP;
1061
1062 err = fm10k_get_reta(netdev, indir);
1063 if (err || !key)
1064 return err;
1065
1066 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
1067 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
1068
1069 return 0;
1070 }
1071
1072 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
1073 const u8 *key, const u8 hfunc)
1074 {
1075 struct fm10k_intfc *interface = netdev_priv(netdev);
1076 struct fm10k_hw *hw = &interface->hw;
1077 int i, err;
1078
1079 /* We do not allow change in unsupported parameters */
1080 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1081 return -EOPNOTSUPP;
1082
1083 err = fm10k_set_reta(netdev, indir);
1084 if (err || !key)
1085 return err;
1086
1087 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) {
1088 u32 rssrk = le32_to_cpu(*(__le32 *)key);
1089
1090 if (interface->rssrk[i] == rssrk)
1091 continue;
1092
1093 interface->rssrk[i] = rssrk;
1094 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
1095 }
1096
1097 return 0;
1098 }
1099
1100 static unsigned int fm10k_max_channels(struct net_device *dev)
1101 {
1102 struct fm10k_intfc *interface = netdev_priv(dev);
1103 unsigned int max_combined = interface->hw.mac.max_queues;
1104 u8 tcs = netdev_get_num_tc(dev);
1105
1106 /* For QoS report channels per traffic class */
1107 if (tcs > 1)
1108 max_combined = BIT((fls(max_combined / tcs) - 1));
1109
1110 return max_combined;
1111 }
1112
1113 static void fm10k_get_channels(struct net_device *dev,
1114 struct ethtool_channels *ch)
1115 {
1116 struct fm10k_intfc *interface = netdev_priv(dev);
1117
1118 /* report maximum channels */
1119 ch->max_combined = fm10k_max_channels(dev);
1120
1121 /* report info for other vector */
1122 ch->max_other = NON_Q_VECTORS;
1123 ch->other_count = ch->max_other;
1124
1125 /* record RSS queues */
1126 ch->combined_count = interface->ring_feature[RING_F_RSS].indices;
1127 }
1128
1129 static int fm10k_set_channels(struct net_device *dev,
1130 struct ethtool_channels *ch)
1131 {
1132 struct fm10k_intfc *interface = netdev_priv(dev);
1133 unsigned int count = ch->combined_count;
1134
1135 /* verify they are not requesting separate vectors */
1136 if (!count || ch->rx_count || ch->tx_count)
1137 return -EINVAL;
1138
1139 /* verify other_count has not changed */
1140 if (ch->other_count != NON_Q_VECTORS)
1141 return -EINVAL;
1142
1143 /* verify the number of channels does not exceed hardware limits */
1144 if (count > fm10k_max_channels(dev))
1145 return -EINVAL;
1146
1147 interface->ring_feature[RING_F_RSS].limit = count;
1148
1149 /* use setup TC to update any traffic class queue mapping */
1150 return fm10k_setup_tc(dev, netdev_get_num_tc(dev));
1151 }
1152
1153 static const struct ethtool_ops fm10k_ethtool_ops = {
1154 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1155 ETHTOOL_COALESCE_USE_ADAPTIVE,
1156 .get_strings = fm10k_get_strings,
1157 .get_sset_count = fm10k_get_sset_count,
1158 .get_ethtool_stats = fm10k_get_ethtool_stats,
1159 .get_drvinfo = fm10k_get_drvinfo,
1160 .get_link = ethtool_op_get_link,
1161 .get_pauseparam = fm10k_get_pauseparam,
1162 .set_pauseparam = fm10k_set_pauseparam,
1163 .get_msglevel = fm10k_get_msglevel,
1164 .set_msglevel = fm10k_set_msglevel,
1165 .get_ringparam = fm10k_get_ringparam,
1166 .set_ringparam = fm10k_set_ringparam,
1167 .get_coalesce = fm10k_get_coalesce,
1168 .set_coalesce = fm10k_set_coalesce,
1169 .get_rxnfc = fm10k_get_rxnfc,
1170 .set_rxnfc = fm10k_set_rxnfc,
1171 .get_regs = fm10k_get_regs,
1172 .get_regs_len = fm10k_get_regs_len,
1173 .self_test = fm10k_self_test,
1174 .get_priv_flags = fm10k_get_priv_flags,
1175 .set_priv_flags = fm10k_set_priv_flags,
1176 .get_rxfh_indir_size = fm10k_get_reta_size,
1177 .get_rxfh_key_size = fm10k_get_rssrk_size,
1178 .get_rxfh = fm10k_get_rssh,
1179 .set_rxfh = fm10k_set_rssh,
1180 .get_channels = fm10k_get_channels,
1181 .set_channels = fm10k_set_channels,
1182 .get_ts_info = ethtool_op_get_ts_info,
1183 };
1184
1185 void fm10k_set_ethtool_ops(struct net_device *dev)
1186 {
1187 dev->ethtool_ops = &fm10k_ethtool_ops;
1188 }
Linux with added FPC-III support