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Merge remote-tracking branch 'battery/for-next'
[deliverable/linux.git] / drivers / net / ethernet / intel / fm10k / fm10k_ethtool.c
1 /* Intel(R) Ethernet Switch Host Interface Driver
2 * Copyright(c) 2013 - 2016 Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
15 *
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
19 */
20
21 #include <linux/vmalloc.h>
22
23 #include "fm10k.h"
24
25 struct fm10k_stats {
26 char stat_string[ETH_GSTRING_LEN];
27 int sizeof_stat;
28 int stat_offset;
29 };
30
31 #define FM10K_NETDEV_STAT(_net_stat) { \
32 .stat_string = #_net_stat, \
33 .sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \
34 .stat_offset = offsetof(struct net_device_stats, _net_stat) \
35 }
36
37 static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
38 FM10K_NETDEV_STAT(tx_packets),
39 FM10K_NETDEV_STAT(tx_bytes),
40 FM10K_NETDEV_STAT(tx_errors),
41 FM10K_NETDEV_STAT(rx_packets),
42 FM10K_NETDEV_STAT(rx_bytes),
43 FM10K_NETDEV_STAT(rx_errors),
44 FM10K_NETDEV_STAT(rx_dropped),
45
46 /* detailed Rx errors */
47 FM10K_NETDEV_STAT(rx_length_errors),
48 FM10K_NETDEV_STAT(rx_crc_errors),
49 FM10K_NETDEV_STAT(rx_fifo_errors),
50 };
51
52 #define FM10K_NETDEV_STATS_LEN ARRAY_SIZE(fm10k_gstrings_net_stats)
53
54 #define FM10K_STAT(_name, _stat) { \
55 .stat_string = _name, \
56 .sizeof_stat = FIELD_SIZEOF(struct fm10k_intfc, _stat), \
57 .stat_offset = offsetof(struct fm10k_intfc, _stat) \
58 }
59
60 static const struct fm10k_stats fm10k_gstrings_global_stats[] = {
61 FM10K_STAT("tx_restart_queue", restart_queue),
62 FM10K_STAT("tx_busy", tx_busy),
63 FM10K_STAT("tx_csum_errors", tx_csum_errors),
64 FM10K_STAT("rx_alloc_failed", alloc_failed),
65 FM10K_STAT("rx_csum_errors", rx_csum_errors),
66
67 FM10K_STAT("tx_packets_nic", tx_packets_nic),
68 FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
69 FM10K_STAT("rx_packets_nic", rx_packets_nic),
70 FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
71 FM10K_STAT("rx_drops_nic", rx_drops_nic),
72 FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
73 FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
74
75 FM10K_STAT("swapi_status", hw.swapi.status),
76 FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
77 FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
78
79 FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending),
80
81 FM10K_STAT("tx_hang_count", tx_timeout_count),
82 };
83
84 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = {
85 FM10K_STAT("timeout", stats.timeout.count),
86 FM10K_STAT("ur", stats.ur.count),
87 FM10K_STAT("ca", stats.ca.count),
88 FM10K_STAT("um", stats.um.count),
89 FM10K_STAT("xec", stats.xec.count),
90 FM10K_STAT("vlan_drop", stats.vlan_drop.count),
91 FM10K_STAT("loopback_drop", stats.loopback_drop.count),
92 FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
93 };
94
95 #define FM10K_MBX_STAT(_name, _stat) { \
96 .stat_string = _name, \
97 .sizeof_stat = FIELD_SIZEOF(struct fm10k_mbx_info, _stat), \
98 .stat_offset = offsetof(struct fm10k_mbx_info, _stat) \
99 }
100
101 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
102 FM10K_MBX_STAT("mbx_tx_busy", tx_busy),
103 FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped),
104 FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
105 FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
106 FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
107 FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
108 FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
109 FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
110 FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
111 };
112
113 #define FM10K_QUEUE_STAT(_name, _stat) { \
114 .stat_string = _name, \
115 .sizeof_stat = FIELD_SIZEOF(struct fm10k_ring, _stat), \
116 .stat_offset = offsetof(struct fm10k_ring, _stat) \
117 }
118
119 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = {
120 FM10K_QUEUE_STAT("packets", stats.packets),
121 FM10K_QUEUE_STAT("bytes", stats.bytes),
122 };
123
124 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)
125 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats)
126 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats)
127 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats)
128
129 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
130 FM10K_NETDEV_STATS_LEN + \
131 FM10K_MBX_STATS_LEN)
132
133 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = {
134 "Mailbox test (on/offline)"
135 };
136
137 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN)
138
139 enum fm10k_self_test_types {
140 FM10K_TEST_MBX,
141 FM10K_TEST_MAX = FM10K_TEST_LEN
142 };
143
144 enum {
145 FM10K_PRV_FLAG_LEN,
146 };
147
148 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = {
149 };
150
151 static void fm10k_add_stat_strings(char **p, const char *prefix,
152 const struct fm10k_stats stats[],
153 const unsigned int size)
154 {
155 unsigned int i;
156
157 for (i = 0; i < size; i++) {
158 snprintf(*p, ETH_GSTRING_LEN, "%s%s",
159 prefix, stats[i].stat_string);
160 *p += ETH_GSTRING_LEN;
161 }
162 }
163
164 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data)
165 {
166 struct fm10k_intfc *interface = netdev_priv(dev);
167 char *p = (char *)data;
168 unsigned int i;
169
170 fm10k_add_stat_strings(&p, "", fm10k_gstrings_net_stats,
171 FM10K_NETDEV_STATS_LEN);
172
173 fm10k_add_stat_strings(&p, "", fm10k_gstrings_global_stats,
174 FM10K_GLOBAL_STATS_LEN);
175
176 fm10k_add_stat_strings(&p, "", fm10k_gstrings_mbx_stats,
177 FM10K_MBX_STATS_LEN);
178
179 if (interface->hw.mac.type != fm10k_mac_vf)
180 fm10k_add_stat_strings(&p, "", fm10k_gstrings_pf_stats,
181 FM10K_PF_STATS_LEN);
182
183 for (i = 0; i < interface->hw.mac.max_queues; i++) {
184 char prefix[ETH_GSTRING_LEN];
185
186 snprintf(prefix, ETH_GSTRING_LEN, "tx_queue_%u_", i);
187 fm10k_add_stat_strings(&p, prefix,
188 fm10k_gstrings_queue_stats,
189 FM10K_QUEUE_STATS_LEN);
190
191 snprintf(prefix, ETH_GSTRING_LEN, "rx_queue_%u_", i);
192 fm10k_add_stat_strings(&p, prefix,
193 fm10k_gstrings_queue_stats,
194 FM10K_QUEUE_STATS_LEN);
195 }
196 }
197
198 static void fm10k_get_strings(struct net_device *dev,
199 u32 stringset, u8 *data)
200 {
201 char *p = (char *)data;
202
203 switch (stringset) {
204 case ETH_SS_TEST:
205 memcpy(data, *fm10k_gstrings_test,
206 FM10K_TEST_LEN * ETH_GSTRING_LEN);
207 break;
208 case ETH_SS_STATS:
209 fm10k_get_stat_strings(dev, data);
210 break;
211 case ETH_SS_PRIV_FLAGS:
212 memcpy(p, fm10k_prv_flags,
213 FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN);
214 break;
215 }
216 }
217
218 static int fm10k_get_sset_count(struct net_device *dev, int sset)
219 {
220 struct fm10k_intfc *interface = netdev_priv(dev);
221 struct fm10k_hw *hw = &interface->hw;
222 int stats_len = FM10K_STATIC_STATS_LEN;
223
224 switch (sset) {
225 case ETH_SS_TEST:
226 return FM10K_TEST_LEN;
227 case ETH_SS_STATS:
228 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN;
229
230 if (hw->mac.type != fm10k_mac_vf)
231 stats_len += FM10K_PF_STATS_LEN;
232
233 return stats_len;
234 case ETH_SS_PRIV_FLAGS:
235 return FM10K_PRV_FLAG_LEN;
236 default:
237 return -EOPNOTSUPP;
238 }
239 }
240
241 static void fm10k_add_ethtool_stats(u64 **data, void *pointer,
242 const struct fm10k_stats stats[],
243 const unsigned int size)
244 {
245 unsigned int i;
246 char *p;
247
248 if (!pointer) {
249 /* memory is not zero allocated so we have to clear it */
250 for (i = 0; i < size; i++)
251 *((*data)++) = 0;
252 return;
253 }
254
255 for (i = 0; i < size; i++) {
256 p = (char *)pointer + stats[i].stat_offset;
257
258 switch (stats[i].sizeof_stat) {
259 case sizeof(u64):
260 *((*data)++) = *(u64 *)p;
261 break;
262 case sizeof(u32):
263 *((*data)++) = *(u32 *)p;
264 break;
265 case sizeof(u16):
266 *((*data)++) = *(u16 *)p;
267 break;
268 case sizeof(u8):
269 *((*data)++) = *(u8 *)p;
270 break;
271 default:
272 *((*data)++) = 0;
273 }
274 }
275 }
276
277 static void fm10k_get_ethtool_stats(struct net_device *netdev,
278 struct ethtool_stats __always_unused *stats,
279 u64 *data)
280 {
281 struct fm10k_intfc *interface = netdev_priv(netdev);
282 struct net_device_stats *net_stats = &netdev->stats;
283 int i;
284
285 fm10k_update_stats(interface);
286
287 fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats,
288 FM10K_NETDEV_STATS_LEN);
289
290 fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats,
291 FM10K_GLOBAL_STATS_LEN);
292
293 fm10k_add_ethtool_stats(&data, &interface->hw.mbx,
294 fm10k_gstrings_mbx_stats,
295 FM10K_MBX_STATS_LEN);
296
297 if (interface->hw.mac.type != fm10k_mac_vf) {
298 fm10k_add_ethtool_stats(&data, interface,
299 fm10k_gstrings_pf_stats,
300 FM10K_PF_STATS_LEN);
301 }
302
303 for (i = 0; i < interface->hw.mac.max_queues; i++) {
304 struct fm10k_ring *ring;
305
306 ring = interface->tx_ring[i];
307 fm10k_add_ethtool_stats(&data, ring,
308 fm10k_gstrings_queue_stats,
309 FM10K_QUEUE_STATS_LEN);
310
311 ring = interface->rx_ring[i];
312 fm10k_add_ethtool_stats(&data, ring,
313 fm10k_gstrings_queue_stats,
314 FM10K_QUEUE_STATS_LEN);
315 }
316 }
317
318 /* If function below adds more registers this define needs to be updated */
319 #define FM10K_REGS_LEN_Q 29
320
321 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
322 {
323 int idx = 0;
324
325 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
326 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
327 buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
328 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
329 buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
330 buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
331 buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
332 buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
333 buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
334 buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
335 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
336 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
337 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
338 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
339 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
340 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
341 buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
342 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
343 buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
344 buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
345 buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
346 buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
347 buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
348 buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
349 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
350 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
351 buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
352 buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
353 buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
354
355 BUG_ON(idx != FM10K_REGS_LEN_Q);
356 }
357
358 /* If function above adds more registers this define needs to be updated */
359 #define FM10K_REGS_LEN_VSI 43
360
361 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
362 {
363 int idx = 0, j;
364
365 buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
366 for (j = 0; j < 10; j++)
367 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
368 for (j = 0; j < 32; j++)
369 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
370
371 BUG_ON(idx != FM10K_REGS_LEN_VSI);
372 }
373
374 static void fm10k_get_regs(struct net_device *netdev,
375 struct ethtool_regs *regs, void *p)
376 {
377 struct fm10k_intfc *interface = netdev_priv(netdev);
378 struct fm10k_hw *hw = &interface->hw;
379 u32 *buff = p;
380 u16 i;
381
382 regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id;
383
384 switch (hw->mac.type) {
385 case fm10k_mac_pf:
386 /* General PF Registers */
387 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
388 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
389 *(buff++) = fm10k_read_reg(hw, FM10K_GCR);
390 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
391
392 for (i = 0; i < 8; i++) {
393 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
394 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
395 }
396
397 for (i = 0; i < 65; i++) {
398 fm10k_get_reg_vsi(hw, buff, i);
399 buff += FM10K_REGS_LEN_VSI;
400 }
401
402 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
403 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
404
405 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
406 fm10k_get_reg_q(hw, buff, i);
407 buff += FM10K_REGS_LEN_Q;
408 }
409
410 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
411
412 for (i = 0; i < 8; i++)
413 *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
414
415 /* Interrupt Throttling Registers */
416 for (i = 0; i < 130; i++)
417 *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
418
419 break;
420 case fm10k_mac_vf:
421 /* General VF registers */
422 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL);
423 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP);
424 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME);
425
426 /* Interrupt Throttling Registers */
427 for (i = 0; i < 8; i++)
428 *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i));
429
430 fm10k_get_reg_vsi(hw, buff, 0);
431 buff += FM10K_REGS_LEN_VSI;
432
433 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) {
434 if (i < hw->mac.max_queues)
435 fm10k_get_reg_q(hw, buff, i);
436 else
437 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q);
438 buff += FM10K_REGS_LEN_Q;
439 }
440
441 break;
442 default:
443 return;
444 }
445 }
446
447 /* If function above adds more registers these define need to be updated */
448 #define FM10K_REGS_LEN_PF \
449 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
450 #define FM10K_REGS_LEN_VF \
451 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q))
452
453 static int fm10k_get_regs_len(struct net_device *netdev)
454 {
455 struct fm10k_intfc *interface = netdev_priv(netdev);
456 struct fm10k_hw *hw = &interface->hw;
457
458 switch (hw->mac.type) {
459 case fm10k_mac_pf:
460 return FM10K_REGS_LEN_PF * sizeof(u32);
461 case fm10k_mac_vf:
462 return FM10K_REGS_LEN_VF * sizeof(u32);
463 default:
464 return 0;
465 }
466 }
467
468 static void fm10k_get_drvinfo(struct net_device *dev,
469 struct ethtool_drvinfo *info)
470 {
471 struct fm10k_intfc *interface = netdev_priv(dev);
472
473 strncpy(info->driver, fm10k_driver_name,
474 sizeof(info->driver) - 1);
475 strncpy(info->version, fm10k_driver_version,
476 sizeof(info->version) - 1);
477 strncpy(info->bus_info, pci_name(interface->pdev),
478 sizeof(info->bus_info) - 1);
479 }
480
481 static void fm10k_get_pauseparam(struct net_device *dev,
482 struct ethtool_pauseparam *pause)
483 {
484 struct fm10k_intfc *interface = netdev_priv(dev);
485
486 /* record fixed values for autoneg and tx pause */
487 pause->autoneg = 0;
488 pause->tx_pause = 1;
489
490 pause->rx_pause = interface->rx_pause ? 1 : 0;
491 }
492
493 static int fm10k_set_pauseparam(struct net_device *dev,
494 struct ethtool_pauseparam *pause)
495 {
496 struct fm10k_intfc *interface = netdev_priv(dev);
497 struct fm10k_hw *hw = &interface->hw;
498
499 if (pause->autoneg || !pause->tx_pause)
500 return -EINVAL;
501
502 /* we can only support pause on the PF to avoid head-of-line blocking */
503 if (hw->mac.type == fm10k_mac_pf)
504 interface->rx_pause = pause->rx_pause ? ~0 : 0;
505 else if (pause->rx_pause)
506 return -EINVAL;
507
508 if (netif_running(dev))
509 fm10k_update_rx_drop_en(interface);
510
511 return 0;
512 }
513
514 static u32 fm10k_get_msglevel(struct net_device *netdev)
515 {
516 struct fm10k_intfc *interface = netdev_priv(netdev);
517
518 return interface->msg_enable;
519 }
520
521 static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
522 {
523 struct fm10k_intfc *interface = netdev_priv(netdev);
524
525 interface->msg_enable = data;
526 }
527
528 static void fm10k_get_ringparam(struct net_device *netdev,
529 struct ethtool_ringparam *ring)
530 {
531 struct fm10k_intfc *interface = netdev_priv(netdev);
532
533 ring->rx_max_pending = FM10K_MAX_RXD;
534 ring->tx_max_pending = FM10K_MAX_TXD;
535 ring->rx_mini_max_pending = 0;
536 ring->rx_jumbo_max_pending = 0;
537 ring->rx_pending = interface->rx_ring_count;
538 ring->tx_pending = interface->tx_ring_count;
539 ring->rx_mini_pending = 0;
540 ring->rx_jumbo_pending = 0;
541 }
542
543 static int fm10k_set_ringparam(struct net_device *netdev,
544 struct ethtool_ringparam *ring)
545 {
546 struct fm10k_intfc *interface = netdev_priv(netdev);
547 struct fm10k_ring *temp_ring;
548 int i, err = 0;
549 u32 new_rx_count, new_tx_count;
550
551 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
552 return -EINVAL;
553
554 new_tx_count = clamp_t(u32, ring->tx_pending,
555 FM10K_MIN_TXD, FM10K_MAX_TXD);
556 new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
557
558 new_rx_count = clamp_t(u32, ring->rx_pending,
559 FM10K_MIN_RXD, FM10K_MAX_RXD);
560 new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
561
562 if ((new_tx_count == interface->tx_ring_count) &&
563 (new_rx_count == interface->rx_ring_count)) {
564 /* nothing to do */
565 return 0;
566 }
567
568 while (test_and_set_bit(__FM10K_RESETTING, &interface->state))
569 usleep_range(1000, 2000);
570
571 if (!netif_running(interface->netdev)) {
572 for (i = 0; i < interface->num_tx_queues; i++)
573 interface->tx_ring[i]->count = new_tx_count;
574 for (i = 0; i < interface->num_rx_queues; i++)
575 interface->rx_ring[i]->count = new_rx_count;
576 interface->tx_ring_count = new_tx_count;
577 interface->rx_ring_count = new_rx_count;
578 goto clear_reset;
579 }
580
581 /* allocate temporary buffer to store rings in */
582 i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
583 temp_ring = vmalloc(i * sizeof(struct fm10k_ring));
584
585 if (!temp_ring) {
586 err = -ENOMEM;
587 goto clear_reset;
588 }
589
590 fm10k_down(interface);
591
592 /* Setup new Tx resources and free the old Tx resources in that order.
593 * We can then assign the new resources to the rings via a memcpy.
594 * The advantage to this approach is that we are guaranteed to still
595 * have resources even in the case of an allocation failure.
596 */
597 if (new_tx_count != interface->tx_ring_count) {
598 for (i = 0; i < interface->num_tx_queues; i++) {
599 memcpy(&temp_ring[i], interface->tx_ring[i],
600 sizeof(struct fm10k_ring));
601
602 temp_ring[i].count = new_tx_count;
603 err = fm10k_setup_tx_resources(&temp_ring[i]);
604 if (err) {
605 while (i) {
606 i--;
607 fm10k_free_tx_resources(&temp_ring[i]);
608 }
609 goto err_setup;
610 }
611 }
612
613 for (i = 0; i < interface->num_tx_queues; i++) {
614 fm10k_free_tx_resources(interface->tx_ring[i]);
615
616 memcpy(interface->tx_ring[i], &temp_ring[i],
617 sizeof(struct fm10k_ring));
618 }
619
620 interface->tx_ring_count = new_tx_count;
621 }
622
623 /* Repeat the process for the Rx rings if needed */
624 if (new_rx_count != interface->rx_ring_count) {
625 for (i = 0; i < interface->num_rx_queues; i++) {
626 memcpy(&temp_ring[i], interface->rx_ring[i],
627 sizeof(struct fm10k_ring));
628
629 temp_ring[i].count = new_rx_count;
630 err = fm10k_setup_rx_resources(&temp_ring[i]);
631 if (err) {
632 while (i) {
633 i--;
634 fm10k_free_rx_resources(&temp_ring[i]);
635 }
636 goto err_setup;
637 }
638 }
639
640 for (i = 0; i < interface->num_rx_queues; i++) {
641 fm10k_free_rx_resources(interface->rx_ring[i]);
642
643 memcpy(interface->rx_ring[i], &temp_ring[i],
644 sizeof(struct fm10k_ring));
645 }
646
647 interface->rx_ring_count = new_rx_count;
648 }
649
650 err_setup:
651 fm10k_up(interface);
652 vfree(temp_ring);
653 clear_reset:
654 clear_bit(__FM10K_RESETTING, &interface->state);
655 return err;
656 }
657
658 static int fm10k_get_coalesce(struct net_device *dev,
659 struct ethtool_coalesce *ec)
660 {
661 struct fm10k_intfc *interface = netdev_priv(dev);
662
663 ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr);
664 ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
665
666 ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr);
667 ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
668
669 return 0;
670 }
671
672 static int fm10k_set_coalesce(struct net_device *dev,
673 struct ethtool_coalesce *ec)
674 {
675 struct fm10k_intfc *interface = netdev_priv(dev);
676 struct fm10k_q_vector *qv;
677 u16 tx_itr, rx_itr;
678 int i;
679
680 /* verify limits */
681 if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
682 (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
683 return -EINVAL;
684
685 /* record settings */
686 tx_itr = ec->tx_coalesce_usecs;
687 rx_itr = ec->rx_coalesce_usecs;
688
689 /* set initial values for adaptive ITR */
690 if (ec->use_adaptive_tx_coalesce)
691 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT;
692
693 if (ec->use_adaptive_rx_coalesce)
694 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT;
695
696 /* update interface */
697 interface->tx_itr = tx_itr;
698 interface->rx_itr = rx_itr;
699
700 /* update q_vectors */
701 for (i = 0; i < interface->num_q_vectors; i++) {
702 qv = interface->q_vector[i];
703 qv->tx.itr = tx_itr;
704 qv->rx.itr = rx_itr;
705 }
706
707 return 0;
708 }
709
710 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface,
711 struct ethtool_rxnfc *cmd)
712 {
713 cmd->data = 0;
714
715 /* Report default options for RSS on fm10k */
716 switch (cmd->flow_type) {
717 case TCP_V4_FLOW:
718 case TCP_V6_FLOW:
719 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
720 /* fall through */
721 case UDP_V4_FLOW:
722 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
723 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
724 /* fall through */
725 case SCTP_V4_FLOW:
726 case SCTP_V6_FLOW:
727 case AH_ESP_V4_FLOW:
728 case AH_ESP_V6_FLOW:
729 case AH_V4_FLOW:
730 case AH_V6_FLOW:
731 case ESP_V4_FLOW:
732 case ESP_V6_FLOW:
733 case IPV4_FLOW:
734 case IPV6_FLOW:
735 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
736 break;
737 case UDP_V6_FLOW:
738 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
739 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
740 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
741 break;
742 default:
743 return -EINVAL;
744 }
745
746 return 0;
747 }
748
749 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
750 u32 __always_unused *rule_locs)
751 {
752 struct fm10k_intfc *interface = netdev_priv(dev);
753 int ret = -EOPNOTSUPP;
754
755 switch (cmd->cmd) {
756 case ETHTOOL_GRXRINGS:
757 cmd->data = interface->num_rx_queues;
758 ret = 0;
759 break;
760 case ETHTOOL_GRXFH:
761 ret = fm10k_get_rss_hash_opts(interface, cmd);
762 break;
763 default:
764 break;
765 }
766
767 return ret;
768 }
769
770 #define UDP_RSS_FLAGS (FM10K_FLAG_RSS_FIELD_IPV4_UDP | \
771 FM10K_FLAG_RSS_FIELD_IPV6_UDP)
772 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface,
773 struct ethtool_rxnfc *nfc)
774 {
775 u32 flags = interface->flags;
776
777 /* RSS does not support anything other than hashing
778 * to queues on src and dst IPs and ports
779 */
780 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
781 RXH_L4_B_0_1 | RXH_L4_B_2_3))
782 return -EINVAL;
783
784 switch (nfc->flow_type) {
785 case TCP_V4_FLOW:
786 case TCP_V6_FLOW:
787 if (!(nfc->data & RXH_IP_SRC) ||
788 !(nfc->data & RXH_IP_DST) ||
789 !(nfc->data & RXH_L4_B_0_1) ||
790 !(nfc->data & RXH_L4_B_2_3))
791 return -EINVAL;
792 break;
793 case UDP_V4_FLOW:
794 if (!(nfc->data & RXH_IP_SRC) ||
795 !(nfc->data & RXH_IP_DST))
796 return -EINVAL;
797 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
798 case 0:
799 flags &= ~FM10K_FLAG_RSS_FIELD_IPV4_UDP;
800 break;
801 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
802 flags |= FM10K_FLAG_RSS_FIELD_IPV4_UDP;
803 break;
804 default:
805 return -EINVAL;
806 }
807 break;
808 case UDP_V6_FLOW:
809 if (!(nfc->data & RXH_IP_SRC) ||
810 !(nfc->data & RXH_IP_DST))
811 return -EINVAL;
812 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
813 case 0:
814 flags &= ~FM10K_FLAG_RSS_FIELD_IPV6_UDP;
815 break;
816 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
817 flags |= FM10K_FLAG_RSS_FIELD_IPV6_UDP;
818 break;
819 default:
820 return -EINVAL;
821 }
822 break;
823 case AH_ESP_V4_FLOW:
824 case AH_V4_FLOW:
825 case ESP_V4_FLOW:
826 case SCTP_V4_FLOW:
827 case AH_ESP_V6_FLOW:
828 case AH_V6_FLOW:
829 case ESP_V6_FLOW:
830 case SCTP_V6_FLOW:
831 if (!(nfc->data & RXH_IP_SRC) ||
832 !(nfc->data & RXH_IP_DST) ||
833 (nfc->data & RXH_L4_B_0_1) ||
834 (nfc->data & RXH_L4_B_2_3))
835 return -EINVAL;
836 break;
837 default:
838 return -EINVAL;
839 }
840
841 /* if we changed something we need to update flags */
842 if (flags != interface->flags) {
843 struct fm10k_hw *hw = &interface->hw;
844 u32 mrqc;
845
846 if ((flags & UDP_RSS_FLAGS) &&
847 !(interface->flags & UDP_RSS_FLAGS))
848 netif_warn(interface, drv, interface->netdev,
849 "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
850
851 interface->flags = flags;
852
853 /* Perform hash on these packet types */
854 mrqc = FM10K_MRQC_IPV4 |
855 FM10K_MRQC_TCP_IPV4 |
856 FM10K_MRQC_IPV6 |
857 FM10K_MRQC_TCP_IPV6;
858
859 if (flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
860 mrqc |= FM10K_MRQC_UDP_IPV4;
861 if (flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
862 mrqc |= FM10K_MRQC_UDP_IPV6;
863
864 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
865 }
866
867 return 0;
868 }
869
870 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
871 {
872 struct fm10k_intfc *interface = netdev_priv(dev);
873 int ret = -EOPNOTSUPP;
874
875 switch (cmd->cmd) {
876 case ETHTOOL_SRXFH:
877 ret = fm10k_set_rss_hash_opt(interface, cmd);
878 break;
879 default:
880 break;
881 }
882
883 return ret;
884 }
885
886 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data)
887 {
888 struct fm10k_hw *hw = &interface->hw;
889 struct fm10k_mbx_info *mbx = &hw->mbx;
890 u32 attr_flag, test_msg[6];
891 unsigned long timeout;
892 int err = -EINVAL;
893
894 /* For now this is a VF only feature */
895 if (hw->mac.type != fm10k_mac_vf)
896 return 0;
897
898 /* loop through both nested and unnested attribute types */
899 for (attr_flag = BIT(FM10K_TEST_MSG_UNSET);
900 attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED);
901 attr_flag += attr_flag) {
902 /* generate message to be tested */
903 fm10k_tlv_msg_test_create(test_msg, attr_flag);
904
905 fm10k_mbx_lock(interface);
906 mbx->test_result = FM10K_NOT_IMPLEMENTED;
907 err = mbx->ops.enqueue_tx(hw, mbx, test_msg);
908 fm10k_mbx_unlock(interface);
909
910 /* wait up to 1 second for response */
911 timeout = jiffies + HZ;
912 do {
913 if (err < 0)
914 goto err_out;
915
916 usleep_range(500, 1000);
917
918 fm10k_mbx_lock(interface);
919 mbx->ops.process(hw, mbx);
920 fm10k_mbx_unlock(interface);
921
922 err = mbx->test_result;
923 if (!err)
924 break;
925 } while (time_is_after_jiffies(timeout));
926
927 /* reporting errors */
928 if (err)
929 goto err_out;
930 }
931
932 err_out:
933 *data = err < 0 ? (attr_flag) : (err > 0);
934 return err;
935 }
936
937 static void fm10k_self_test(struct net_device *dev,
938 struct ethtool_test *eth_test, u64 *data)
939 {
940 struct fm10k_intfc *interface = netdev_priv(dev);
941 struct fm10k_hw *hw = &interface->hw;
942
943 memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
944
945 if (FM10K_REMOVED(hw)) {
946 netif_err(interface, drv, dev,
947 "Interface removed - test blocked\n");
948 eth_test->flags |= ETH_TEST_FL_FAILED;
949 return;
950 }
951
952 if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX]))
953 eth_test->flags |= ETH_TEST_FL_FAILED;
954 }
955
956 static u32 fm10k_get_priv_flags(struct net_device *netdev)
957 {
958 return 0;
959 }
960
961 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags)
962 {
963 if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN))
964 return -EINVAL;
965
966 return 0;
967 }
968
969 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev)
970 {
971 return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
972 }
973
974 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir)
975 {
976 u16 rss_i = interface->ring_feature[RING_F_RSS].indices;
977 struct fm10k_hw *hw = &interface->hw;
978 u32 table[4];
979 int i, j;
980
981 /* record entries to reta table */
982 for (i = 0; i < FM10K_RETA_SIZE; i++) {
983 u32 reta, n;
984
985 /* generate a new table if we weren't given one */
986 for (j = 0; j < 4; j++) {
987 if (indir)
988 n = indir[4 * i + j];
989 else
990 n = ethtool_rxfh_indir_default(4 * i + j,
991 rss_i);
992
993 table[j] = n;
994 }
995
996 reta = table[0] |
997 (table[1] << 8) |
998 (table[2] << 16) |
999 (table[3] << 24);
1000
1001 if (interface->reta[i] == reta)
1002 continue;
1003
1004 interface->reta[i] = reta;
1005 fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
1006 }
1007 }
1008
1009 static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
1010 {
1011 struct fm10k_intfc *interface = netdev_priv(netdev);
1012 int i;
1013
1014 if (!indir)
1015 return 0;
1016
1017 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
1018 u32 reta = interface->reta[i];
1019
1020 indir[0] = (reta << 24) >> 24;
1021 indir[1] = (reta << 16) >> 24;
1022 indir[2] = (reta << 8) >> 24;
1023 indir[3] = (reta) >> 24;
1024 }
1025
1026 return 0;
1027 }
1028
1029 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
1030 {
1031 struct fm10k_intfc *interface = netdev_priv(netdev);
1032 int i;
1033 u16 rss_i;
1034
1035 if (!indir)
1036 return 0;
1037
1038 /* Verify user input. */
1039 rss_i = interface->ring_feature[RING_F_RSS].indices;
1040 for (i = fm10k_get_reta_size(netdev); i--;) {
1041 if (indir[i] < rss_i)
1042 continue;
1043 return -EINVAL;
1044 }
1045
1046 fm10k_write_reta(interface, indir);
1047
1048 return 0;
1049 }
1050
1051 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev)
1052 {
1053 return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
1054 }
1055
1056 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key,
1057 u8 *hfunc)
1058 {
1059 struct fm10k_intfc *interface = netdev_priv(netdev);
1060 int i, err;
1061
1062 if (hfunc)
1063 *hfunc = ETH_RSS_HASH_TOP;
1064
1065 err = fm10k_get_reta(netdev, indir);
1066 if (err || !key)
1067 return err;
1068
1069 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
1070 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
1071
1072 return 0;
1073 }
1074
1075 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
1076 const u8 *key, const u8 hfunc)
1077 {
1078 struct fm10k_intfc *interface = netdev_priv(netdev);
1079 struct fm10k_hw *hw = &interface->hw;
1080 int i, err;
1081
1082 /* We do not allow change in unsupported parameters */
1083 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1084 return -EOPNOTSUPP;
1085
1086 err = fm10k_set_reta(netdev, indir);
1087 if (err || !key)
1088 return err;
1089
1090 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) {
1091 u32 rssrk = le32_to_cpu(*(__le32 *)key);
1092
1093 if (interface->rssrk[i] == rssrk)
1094 continue;
1095
1096 interface->rssrk[i] = rssrk;
1097 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
1098 }
1099
1100 return 0;
1101 }
1102
1103 static unsigned int fm10k_max_channels(struct net_device *dev)
1104 {
1105 struct fm10k_intfc *interface = netdev_priv(dev);
1106 unsigned int max_combined = interface->hw.mac.max_queues;
1107 u8 tcs = netdev_get_num_tc(dev);
1108
1109 /* For QoS report channels per traffic class */
1110 if (tcs > 1)
1111 max_combined = BIT((fls(max_combined / tcs) - 1));
1112
1113 return max_combined;
1114 }
1115
1116 static void fm10k_get_channels(struct net_device *dev,
1117 struct ethtool_channels *ch)
1118 {
1119 struct fm10k_intfc *interface = netdev_priv(dev);
1120 struct fm10k_hw *hw = &interface->hw;
1121
1122 /* report maximum channels */
1123 ch->max_combined = fm10k_max_channels(dev);
1124
1125 /* report info for other vector */
1126 ch->max_other = NON_Q_VECTORS(hw);
1127 ch->other_count = ch->max_other;
1128
1129 /* record RSS queues */
1130 ch->combined_count = interface->ring_feature[RING_F_RSS].indices;
1131 }
1132
1133 static int fm10k_set_channels(struct net_device *dev,
1134 struct ethtool_channels *ch)
1135 {
1136 struct fm10k_intfc *interface = netdev_priv(dev);
1137 unsigned int count = ch->combined_count;
1138 struct fm10k_hw *hw = &interface->hw;
1139
1140 /* verify they are not requesting separate vectors */
1141 if (!count || ch->rx_count || ch->tx_count)
1142 return -EINVAL;
1143
1144 /* verify other_count has not changed */
1145 if (ch->other_count != NON_Q_VECTORS(hw))
1146 return -EINVAL;
1147
1148 /* verify the number of channels does not exceed hardware limits */
1149 if (count > fm10k_max_channels(dev))
1150 return -EINVAL;
1151
1152 interface->ring_feature[RING_F_RSS].limit = count;
1153
1154 /* use setup TC to update any traffic class queue mapping */
1155 return fm10k_setup_tc(dev, netdev_get_num_tc(dev));
1156 }
1157
1158 static const struct ethtool_ops fm10k_ethtool_ops = {
1159 .get_strings = fm10k_get_strings,
1160 .get_sset_count = fm10k_get_sset_count,
1161 .get_ethtool_stats = fm10k_get_ethtool_stats,
1162 .get_drvinfo = fm10k_get_drvinfo,
1163 .get_link = ethtool_op_get_link,
1164 .get_pauseparam = fm10k_get_pauseparam,
1165 .set_pauseparam = fm10k_set_pauseparam,
1166 .get_msglevel = fm10k_get_msglevel,
1167 .set_msglevel = fm10k_set_msglevel,
1168 .get_ringparam = fm10k_get_ringparam,
1169 .set_ringparam = fm10k_set_ringparam,
1170 .get_coalesce = fm10k_get_coalesce,
1171 .set_coalesce = fm10k_set_coalesce,
1172 .get_rxnfc = fm10k_get_rxnfc,
1173 .set_rxnfc = fm10k_set_rxnfc,
1174 .get_regs = fm10k_get_regs,
1175 .get_regs_len = fm10k_get_regs_len,
1176 .self_test = fm10k_self_test,
1177 .get_priv_flags = fm10k_get_priv_flags,
1178 .set_priv_flags = fm10k_set_priv_flags,
1179 .get_rxfh_indir_size = fm10k_get_reta_size,
1180 .get_rxfh_key_size = fm10k_get_rssrk_size,
1181 .get_rxfh = fm10k_get_rssh,
1182 .set_rxfh = fm10k_set_rssh,
1183 .get_channels = fm10k_get_channels,
1184 .set_channels = fm10k_set_channels,
1185 };
1186
1187 void fm10k_set_ethtool_ops(struct net_device *dev)
1188 {
1189 dev->ethtool_ops = &fm10k_ethtool_ops;
1190 }
Linux kernel - Deliverables
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