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net: ethernet: aquantia: Superfluous initialization of "err".
[linux-block.git] / drivers / net / ethernet / aquantia / atlantic / aq_nic.c
CommitLineData
97bde5c4
DV		 1/*
2 * aQuantia Corporation Network Driver
3 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 */
9
10/* File aq_nic.c: Definition of common code for NIC. */
11
12#include "aq_nic.h"
13#include "aq_ring.h"
14#include "aq_vec.h"
15#include "aq_hw.h"
16#include "aq_pci_func.h"
17#include "aq_nic_internal.h"
18
19#include <linux/netdevice.h>
20#include <linux/etherdevice.h>
21#include <linux/timer.h>
22#include <linux/cpu.h>
23#include <linux/ip.h>
24#include <linux/tcp.h>
25#include <net/ip.h>
26
27static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
28{
29 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
30 struct aq_rss_parameters *rss_params = &cfg->aq_rss;
31 int i = 0;
32
33 static u8 rss_key[40] = {
34 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
35 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
36 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
37 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
38 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
39 };
40
41 rss_params->hash_secret_key_size = sizeof(rss_key);
42 memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
43 rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
44
45 for (i = rss_params->indirection_table_size; i--;)
46 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
47}
48
49/* Fills aq_nic_cfg with valid defaults */
50static void aq_nic_cfg_init_defaults(struct aq_nic_s *self)
51{
52 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
53
54 cfg->aq_hw_caps = &self->aq_hw_caps;
55
56 cfg->vecs = AQ_CFG_VECS_DEF;
57 cfg->tcs = AQ_CFG_TCS_DEF;
58
59 cfg->rxds = AQ_CFG_RXDS_DEF;
60 cfg->txds = AQ_CFG_TXDS_DEF;
61
62 cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
63
64 cfg->is_interrupt_moderation = AQ_CFG_IS_INTERRUPT_MODERATION_DEF;
65 cfg->itr = cfg->is_interrupt_moderation ?
66 AQ_CFG_INTERRUPT_MODERATION_RATE_DEF : 0U;
67
68 cfg->is_rss = AQ_CFG_IS_RSS_DEF;
69 cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
70 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
71 cfg->flow_control = AQ_CFG_FC_MODE;
72
73 cfg->mtu = AQ_CFG_MTU_DEF;
74 cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
75 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
76
77 cfg->is_lro = AQ_CFG_IS_LRO_DEF;
78
79 cfg->vlan_id = 0U;
80
81 aq_nic_rss_init(self, cfg->num_rss_queues);
82}
83
84/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
85int aq_nic_cfg_start(struct aq_nic_s *self)
86{
87 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
88
89 /*descriptors */
90 cfg->rxds = min(cfg->rxds, cfg->aq_hw_caps->rxds);
91 cfg->txds = min(cfg->txds, cfg->aq_hw_caps->txds);
92
93 /*rss rings */
94 cfg->vecs = min(cfg->vecs, cfg->aq_hw_caps->vecs);
95 cfg->vecs = min(cfg->vecs, num_online_cpus());
96 /* cfg->vecs should be power of 2 for RSS */
97 if (cfg->vecs >= 8U)
98 cfg->vecs = 8U;
99 else if (cfg->vecs >= 4U)
100 cfg->vecs = 4U;
101 else if (cfg->vecs >= 2U)
102 cfg->vecs = 2U;
103 else
104 cfg->vecs = 1U;
105
106 cfg->irq_type = aq_pci_func_get_irq_type(self->aq_pci_func);
107
108 if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
109 (self->aq_hw_caps.vecs == 1U) ||
110 (cfg->vecs == 1U)) {
111 cfg->is_rss = 0U;
112 cfg->vecs = 1U;
113 }
114
115 cfg->link_speed_msk &= self->aq_hw_caps.link_speed_msk;
116 cfg->hw_features = self->aq_hw_caps.hw_features;
117 return 0;
118}
119
120static void aq_nic_service_timer_cb(unsigned long param)
121{
122 struct aq_nic_s *self = (struct aq_nic_s *)param;
123 struct net_device *ndev = aq_nic_get_ndev(self);
124 int err = 0;
97bde5c4
DV		 125 unsigned int i = 0U;
126 struct aq_hw_link_status_s link_status;
127 struct aq_ring_stats_rx_s stats_rx;
128 struct aq_ring_stats_tx_s stats_tx;
129
97bde5c4
DV		 130 if (aq_utils_obj_test(&self->header.flags, AQ_NIC_FLAGS_IS_NOT_READY))
131 goto err_exit;
132
133 err = self->aq_hw_ops.hw_get_link_status(self->aq_hw, &link_status);
134 if (err < 0)
135 goto err_exit;
136
137 self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw,
138 self->aq_nic_cfg.is_interrupt_moderation);
139
140 if (memcmp(&link_status, &self->link_status, sizeof(link_status))) {
141 if (link_status.mbps) {
142 aq_utils_obj_set(&self->header.flags,
143 AQ_NIC_FLAG_STARTED);
144 aq_utils_obj_clear(&self->header.flags,
145 AQ_NIC_LINK_DOWN);
146 netif_carrier_on(self->ndev);
147 } else {
148 netif_carrier_off(self->ndev);
149 aq_utils_obj_set(&self->header.flags, AQ_NIC_LINK_DOWN);
150 }
151
152 self->link_status = link_status;
153 }
154
155 memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s));
156 memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s));
157 for (i = AQ_DIMOF(self->aq_vec); i--;) {
158 if (self->aq_vec[i])
159 aq_vec_add_stats(self->aq_vec[i], &stats_rx, &stats_tx);
160 }
161
162 ndev->stats.rx_packets = stats_rx.packets;
163 ndev->stats.rx_bytes = stats_rx.bytes;
164 ndev->stats.rx_errors = stats_rx.errors;
165 ndev->stats.tx_packets = stats_tx.packets;
166 ndev->stats.tx_bytes = stats_tx.bytes;
167 ndev->stats.tx_errors = stats_tx.errors;
168
169err_exit:
97bde5c4
DV		 170 mod_timer(&self->service_timer,
171 jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
172}
173
174static void aq_nic_polling_timer_cb(unsigned long param)
175{
176 struct aq_nic_s *self = (struct aq_nic_s *)param;
177 struct aq_vec_s *aq_vec = NULL;
178 unsigned int i = 0U;
179
180 for (i = 0U, aq_vec = self->aq_vec[0];
181 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
182 aq_vec_isr(i, (void *)aq_vec);
183
184 mod_timer(&self->polling_timer, jiffies +
185 AQ_CFG_POLLING_TIMER_INTERVAL);
186}
187
188static struct net_device *aq_nic_ndev_alloc(void)
189{
190 return alloc_etherdev_mq(sizeof(struct aq_nic_s), AQ_CFG_VECS_MAX);
191}
192
193struct aq_nic_s *aq_nic_alloc_cold(const struct net_device_ops *ndev_ops,
194 const struct ethtool_ops *et_ops,
195 struct device *dev,
196 struct aq_pci_func_s *aq_pci_func,
197 unsigned int port,
198 const struct aq_hw_ops *aq_hw_ops)
199{
200 struct net_device *ndev = NULL;
201 struct aq_nic_s *self = NULL;
202 int err = 0;
203
204 ndev = aq_nic_ndev_alloc();
205 self = netdev_priv(ndev);
206 if (!self) {
207 err = -EINVAL;
208 goto err_exit;
209 }
210
211 ndev->netdev_ops = ndev_ops;
212 ndev->ethtool_ops = et_ops;
213
214 SET_NETDEV_DEV(ndev, dev);
215
216 ndev->if_port = port;
5513e164 217 ndev->min_mtu = ETH_MIN_MTU;
97bde5c4
DV		 218 self->ndev = ndev;
219
220 self->aq_pci_func = aq_pci_func;
221
222 self->aq_hw_ops = *aq_hw_ops;
223 self->port = (u8)port;
224
225 self->aq_hw = self->aq_hw_ops.create(aq_pci_func, self->port,
226 &self->aq_hw_ops);
227 err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &self->aq_hw_caps);
228 if (err < 0)
229 goto err_exit;
230
231 aq_nic_cfg_init_defaults(self);
232
233err_exit:
234 if (err < 0) {
235 aq_nic_free_hot_resources(self);
236 self = NULL;
237 }
238 return self;
239}
240
241int aq_nic_ndev_register(struct aq_nic_s *self)
242{
243 int err = 0;
244 unsigned int i = 0U;
245
246 if (!self->ndev) {
247 err = -EINVAL;
248 goto err_exit;
249 }
250 err = self->aq_hw_ops.hw_get_mac_permanent(self->aq_hw,
251 self->aq_nic_cfg.aq_hw_caps,
252 self->ndev->dev_addr);
253 if (err < 0)
254 goto err_exit;
255
256#if defined(AQ_CFG_MAC_ADDR_PERMANENT)
257 {
258 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
259
260 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
261 }
262#endif
263 err = register_netdev(self->ndev);
264 if (err < 0)
265 goto err_exit;
266
267 self->is_ndev_registered = true;
268 netif_carrier_off(self->ndev);
269
270 for (i = AQ_CFG_VECS_MAX; i--;)
271 aq_nic_ndev_queue_stop(self, i);
272
273err_exit:
274 return err;
275}
276
277int aq_nic_ndev_init(struct aq_nic_s *self)
278{
279 struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
280 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
281
282 self->ndev->hw_features |= aq_hw_caps->hw_features;
283 self->ndev->features = aq_hw_caps->hw_features;
284 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
285 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
286
287 return 0;
288}
289
290void aq_nic_ndev_free(struct aq_nic_s *self)
291{
292 if (!self->ndev)
293 goto err_exit;
294
295 if (self->is_ndev_registered)
296 unregister_netdev(self->ndev);
297
298 if (self->aq_hw)
299 self->aq_hw_ops.destroy(self->aq_hw);
300
301 free_netdev(self->ndev);
302
303err_exit:;
304}
305
306struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev)
307{
308 struct aq_nic_s *self = NULL;
309 int err = 0;
310
311 if (!ndev) {
312 err = -EINVAL;
313 goto err_exit;
314 }
315 self = netdev_priv(ndev);
316
317 if (!self) {
318 err = -EINVAL;
319 goto err_exit;
320 }
321 if (netif_running(ndev)) {
322 unsigned int i;
323
324 for (i = AQ_CFG_VECS_MAX; i--;)
325 netif_stop_subqueue(ndev, i);
326 }
327
328 for (self->aq_vecs = 0; self->aq_vecs < self->aq_nic_cfg.vecs;
329 self->aq_vecs++) {
330 self->aq_vec[self->aq_vecs] =
331 aq_vec_alloc(self, self->aq_vecs, &self->aq_nic_cfg);
332 if (!self->aq_vec[self->aq_vecs]) {
333 err = -ENOMEM;
334 goto err_exit;
335 }
336 }
337
338err_exit:
339 if (err < 0) {
340 aq_nic_free_hot_resources(self);
341 self = NULL;
342 }
343 return self;
344}
345
346void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
347 struct aq_ring_s *ring)
348{
349 self->aq_ring_tx[idx] = ring;
350}
351
352struct device *aq_nic_get_dev(struct aq_nic_s *self)
353{
354 return self->ndev->dev.parent;
355}
356
357struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
358{
359 return self->ndev;
360}
361
362int aq_nic_init(struct aq_nic_s *self)
363{
364 struct aq_vec_s *aq_vec = NULL;
365 int err = 0;
366 unsigned int i = 0U;
367
368 self->power_state = AQ_HW_POWER_STATE_D0;
369 err = self->aq_hw_ops.hw_reset(self->aq_hw);
370 if (err < 0)
371 goto err_exit;
372
373 err = self->aq_hw_ops.hw_init(self->aq_hw, &self->aq_nic_cfg,
374 aq_nic_get_ndev(self)->dev_addr);
375 if (err < 0)
376 goto err_exit;
377
378 for (i = 0U, aq_vec = self->aq_vec[0];
379 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
380 aq_vec_init(aq_vec, &self->aq_hw_ops, self->aq_hw);
381
382err_exit:
383 return err;
384}
385
386void aq_nic_ndev_queue_start(struct aq_nic_s *self, unsigned int idx)
387{
388 netif_start_subqueue(self->ndev, idx);
389}
390
391void aq_nic_ndev_queue_stop(struct aq_nic_s *self, unsigned int idx)
392{
393 netif_stop_subqueue(self->ndev, idx);
394}
395
396int aq_nic_start(struct aq_nic_s *self)
397{
398 struct aq_vec_s *aq_vec = NULL;
399 int err = 0;
400 unsigned int i = 0U;
401
402 err = self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
403 self->mc_list.ar,
404 self->mc_list.count);
405 if (err < 0)
406 goto err_exit;
407
408 err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw,
409 self->packet_filter);
410 if (err < 0)
411 goto err_exit;
412
413 for (i = 0U, aq_vec = self->aq_vec[0];
414 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
415 err = aq_vec_start(aq_vec);
416 if (err < 0)
417 goto err_exit;
418 }
419
420 err = self->aq_hw_ops.hw_start(self->aq_hw);
421 if (err < 0)
422 goto err_exit;
423
424 err = self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw,
425 self->aq_nic_cfg.is_interrupt_moderation);
426 if (err < 0)
427 goto err_exit;
428 setup_timer(&self->service_timer, &aq_nic_service_timer_cb,
429 (unsigned long)self);
430 mod_timer(&self->service_timer, jiffies +
431 AQ_CFG_SERVICE_TIMER_INTERVAL);
432
433 if (self->aq_nic_cfg.is_polling) {
434 setup_timer(&self->polling_timer, &aq_nic_polling_timer_cb,
435 (unsigned long)self);
436 mod_timer(&self->polling_timer, jiffies +
437 AQ_CFG_POLLING_TIMER_INTERVAL);
438 } else {
439 for (i = 0U, aq_vec = self->aq_vec[0];
440 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
441 err = aq_pci_func_alloc_irq(self->aq_pci_func, i,
442 self->ndev->name, aq_vec,
443 aq_vec_get_affinity_mask(aq_vec));
444 if (err < 0)
445 goto err_exit;
446 }
447
448 err = self->aq_hw_ops.hw_irq_enable(self->aq_hw,
449 AQ_CFG_IRQ_MASK);
450 if (err < 0)
451 goto err_exit;
452 }
453
454 for (i = 0U, aq_vec = self->aq_vec[0];
455 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
456 aq_nic_ndev_queue_start(self, i);
457
458 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
459 if (err < 0)
460 goto err_exit;
461
462 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
463 if (err < 0)
464 goto err_exit;
465
466err_exit:
467 return err;
468}
469
470static unsigned int aq_nic_map_skb_frag(struct aq_nic_s *self,
471 struct sk_buff *skb,
472 struct aq_ring_buff_s *dx)
473{
474 unsigned int ret = 0U;
475 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
476 unsigned int frag_count = 0U;
477
478 dx->flags = 0U;
479 dx->len = skb_headlen(skb);
480 dx->pa = dma_map_single(aq_nic_get_dev(self), skb->data, dx->len,
481 DMA_TO_DEVICE);
482 dx->len_pkt = skb->len;
483 dx->is_sop = 1U;
484 dx->is_mapped = 1U;
485
486 ++ret;
487
488 if (skb->ip_summed == CHECKSUM_PARTIAL) {
489 dx->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ? 1U : 0U;
490 dx->is_tcp_cso =
491 (ip_hdr(skb)->protocol == IPPROTO_TCP) ? 1U : 0U;
492 dx->is_udp_cso =
493 (ip_hdr(skb)->protocol == IPPROTO_UDP) ? 1U : 0U;
494 }
495
496 for (; nr_frags--; ++frag_count) {
497 unsigned int frag_len;
498 dma_addr_t frag_pa;
499 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
500
501 frag_len = skb_frag_size(frag);
502
503 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), frag, 0,
504 frag_len, DMA_TO_DEVICE);
505
506 while (frag_len > AQ_CFG_TX_FRAME_MAX) {
507 ++dx;
508 ++ret;
509 dx->flags = 0U;
510 dx->len = AQ_CFG_TX_FRAME_MAX;
511 dx->pa = frag_pa;
512 dx->is_mapped = 1U;
513
514 frag_len -= AQ_CFG_TX_FRAME_MAX;
515 frag_pa += AQ_CFG_TX_FRAME_MAX;
516 }
517
518 ++dx;
519 ++ret;
520
521 dx->flags = 0U;
522 dx->len = frag_len;
523 dx->pa = frag_pa;
524 dx->is_mapped = 1U;
525 }
526
527 dx->is_eop = 1U;
528 dx->skb = skb;
529
530 return ret;
531}
532
533static unsigned int aq_nic_map_skb_lso(struct aq_nic_s *self,
534 struct sk_buff *skb,
535 struct aq_ring_buff_s *dx)
536{
537 dx->flags = 0U;
538 dx->len_pkt = skb->len;
539 dx->len_l2 = ETH_HLEN;
540 dx->len_l3 = ip_hdrlen(skb);
541 dx->len_l4 = tcp_hdrlen(skb);
542 dx->mss = skb_shinfo(skb)->gso_size;
543 dx->is_txc = 1U;
544 return 1U;
545}
546
547static unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
548 struct aq_ring_buff_s *dx)
549{
550 unsigned int ret = 0U;
551
552 if (unlikely(skb_is_gso(skb))) {
553 ret = aq_nic_map_skb_lso(self, skb, dx);
554 ++dx;
555 }
556
557 ret += aq_nic_map_skb_frag(self, skb, dx);
558
559 return ret;
560}
561
562int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
563__releases(&ring->lock)
564__acquires(&ring->lock)
565{
566 struct aq_ring_s *ring = NULL;
567 unsigned int frags = 0U;
568 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
569 unsigned int tc = 0U;
570 unsigned int trys = AQ_CFG_LOCK_TRYS;
571 int err = 0;
572 bool is_nic_in_bad_state;
97bde5c4
DV		 573 struct aq_ring_buff_s buffers[AQ_CFG_SKB_FRAGS_MAX];
574
575 frags = skb_shinfo(skb)->nr_frags + 1;
576
577 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
578
97bde5c4
DV		 579 if (frags > AQ_CFG_SKB_FRAGS_MAX) {
580 dev_kfree_skb_any(skb);
581 goto err_exit;
582 }
583
584 is_nic_in_bad_state = aq_utils_obj_test(&self->header.flags,
585 AQ_NIC_FLAGS_IS_NOT_TX_READY) ||
586 (aq_ring_avail_dx(ring) <
587 AQ_CFG_SKB_FRAGS_MAX);
588
589 if (is_nic_in_bad_state) {
590 aq_nic_ndev_queue_stop(self, ring->idx);
591 err = NETDEV_TX_BUSY;
592 goto err_exit;
593 }
594
595 do {
596 if (spin_trylock(&ring->header.lock)) {
597 frags = aq_nic_map_skb(self, skb, &buffers[0]);
598
599 aq_ring_tx_append_buffs(ring, &buffers[0], frags);
600
601 err = self->aq_hw_ops.hw_ring_tx_xmit(self->aq_hw,
602 ring, frags);
603 if (err >= 0) {
604 if (aq_ring_avail_dx(ring) <
605 AQ_CFG_SKB_FRAGS_MAX + 1)
606 aq_nic_ndev_queue_stop(self, ring->idx);
607 }
608 spin_unlock(&ring->header.lock);
609
610 if (err >= 0) {
611 ++ring->stats.tx.packets;
612 ring->stats.tx.bytes += skb->len;
613 }
614 break;
615 }
616 } while (--trys);
617
618 if (!trys) {
619 err = NETDEV_TX_BUSY;
620 goto err_exit;
621 }
622
623err_exit:
97bde5c4
DV		 624 return err;
625}
626
627int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
628{
629 int err = 0;
630
631 err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, flags);
632 if (err < 0)
633 goto err_exit;
634
635 self->packet_filter = flags;
636
637err_exit:
638 return err;
639}
640
641int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
642{
643 struct netdev_hw_addr *ha = NULL;
644 unsigned int i = 0U;
645
646 self->mc_list.count = 0U;
647
648 netdev_for_each_mc_addr(ha, ndev) {
649 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
650 ++self->mc_list.count;
651 }
652
653 return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
654 self->mc_list.ar,
655 self->mc_list.count);
656}
657
658int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
659{
660 int err = 0;
661
662 if (new_mtu > self->aq_hw_caps.mtu) {
663 err = -EINVAL;
664 goto err_exit;
665 }
666 self->aq_nic_cfg.mtu = new_mtu;
667
668err_exit:
669 return err;
670}
671
672int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
673{
674 return self->aq_hw_ops.hw_set_mac_address(self->aq_hw, ndev->dev_addr);
675}
676
677unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
678{
679 return self->link_status.mbps;
680}
681
682int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
683{
684 u32 *regs_buff = p;
685 int err = 0;
686
687 regs->version = 1;
688
689 err = self->aq_hw_ops.hw_get_regs(self->aq_hw,
690 &self->aq_hw_caps, regs_buff);
691 if (err < 0)
692 goto err_exit;
693
694err_exit:
695 return err;
696}
697
698int aq_nic_get_regs_count(struct aq_nic_s *self)
699{
700 return self->aq_hw_caps.mac_regs_count;
701}
702
703void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
704{
705 struct aq_vec_s *aq_vec = NULL;
706 unsigned int i = 0U;
707 unsigned int count = 0U;
708 int err = 0;
709
710 err = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw, data, &count);
711 if (err < 0)
712 goto err_exit;
713
714 data += count;
715 count = 0U;
716
717 for (i = 0U, aq_vec = self->aq_vec[0];
718 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
719 data += count;
720 aq_vec_get_sw_stats(aq_vec, data, &count);
721 }
722
723err_exit:;
724 (void)err;
725}
726
f8244ab5
PR		 727void aq_nic_get_link_ksettings(struct aq_nic_s *self,
728 struct ethtool_link_ksettings *cmd)
97bde5c4 729{
f8244ab5 730 cmd->base.port = PORT_TP;
97bde5c4 731 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
f8244ab5
PR		 732 cmd->base.duplex = DUPLEX_FULL;
733 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
734
8f9000a5
PB		 735 ethtool_link_ksettings_zero_link_mode(cmd, supported);
736
737 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_10G)
738 ethtool_link_ksettings_add_link_mode(cmd, supported,
739 10000baseT_Full);
740
741 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_5G)
742 ethtool_link_ksettings_add_link_mode(cmd, supported,
743 5000baseT_Full);
744
745 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_2GS)
746 ethtool_link_ksettings_add_link_mode(cmd, supported,
747 2500baseT_Full);
748
749 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_1G)
750 ethtool_link_ksettings_add_link_mode(cmd, supported,
751 1000baseT_Full);
752
753 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_100M)
754 ethtool_link_ksettings_add_link_mode(cmd, supported,
755 100baseT_Full);
756
757 if (self->aq_hw_caps.flow_control)
758 ethtool_link_ksettings_add_link_mode(cmd, supported,
759 Pause);
760
761 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
762 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
763
764 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
765
766 if (self->aq_nic_cfg.is_autoneg)
767 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
768
769 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
770 ethtool_link_ksettings_add_link_mode(cmd, advertising,
771 10000baseT_Full);
772
773 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
774 ethtool_link_ksettings_add_link_mode(cmd, advertising,
775 5000baseT_Full);
776
777 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS)
778 ethtool_link_ksettings_add_link_mode(cmd, advertising,
779 2500baseT_Full);
780
781 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
782 ethtool_link_ksettings_add_link_mode(cmd, advertising,
783 1000baseT_Full);
784
785 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
786 ethtool_link_ksettings_add_link_mode(cmd, advertising,
787 100baseT_Full);
788
789 if (self->aq_nic_cfg.flow_control)
790 ethtool_link_ksettings_add_link_mode(cmd, advertising,
791 Pause);
792
793 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
97bde5c4
DV		 794}
795
f8244ab5
PR		 796int aq_nic_set_link_ksettings(struct aq_nic_s *self,
797 const struct ethtool_link_ksettings *cmd)
97bde5c4
DV		 798{
799 u32 speed = 0U;
800 u32 rate = 0U;
801 int err = 0;
802
f8244ab5 803 if (cmd->base.autoneg == AUTONEG_ENABLE) {
97bde5c4
DV		 804 rate = self->aq_hw_caps.link_speed_msk;
805 self->aq_nic_cfg.is_autoneg = true;
806 } else {
f8244ab5 807 speed = cmd->base.speed;
97bde5c4
DV		 808
809 switch (speed) {
810 case SPEED_100:
811 rate = AQ_NIC_RATE_100M;
812 break;
813
814 case SPEED_1000:
815 rate = AQ_NIC_RATE_1G;
816 break;
817
818 case SPEED_2500:
819 rate = AQ_NIC_RATE_2GS;
820 break;
821
822 case SPEED_5000:
823 rate = AQ_NIC_RATE_5G;
824 break;
825
826 case SPEED_10000:
827 rate = AQ_NIC_RATE_10G;
828 break;
829
830 default:
831 err = -1;
832 goto err_exit;
833 break;
834 }
835 if (!(self->aq_hw_caps.link_speed_msk & rate)) {
836 err = -1;
837 goto err_exit;
838 }
839
840 self->aq_nic_cfg.is_autoneg = false;
841 }
842
843 err = self->aq_hw_ops.hw_set_link_speed(self->aq_hw, rate);
844 if (err < 0)
845 goto err_exit;
846
847 self->aq_nic_cfg.link_speed_msk = rate;
848
849err_exit:
850 return err;
851}
852
853struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
854{
855 return &self->aq_nic_cfg;
856}
857
858u32 aq_nic_get_fw_version(struct aq_nic_s *self)
859{
860 u32 fw_version = 0U;
861
862 self->aq_hw_ops.hw_get_fw_version(self->aq_hw, &fw_version);
863
864 return fw_version;
865}
866
867int aq_nic_stop(struct aq_nic_s *self)
868{
869 struct aq_vec_s *aq_vec = NULL;
870 unsigned int i = 0U;
871
872 for (i = 0U, aq_vec = self->aq_vec[0];
873 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
874 aq_nic_ndev_queue_stop(self, i);
875
876 del_timer_sync(&self->service_timer);
877
878 self->aq_hw_ops.hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
879
880 if (self->aq_nic_cfg.is_polling)
881 del_timer_sync(&self->polling_timer);
882 else
883 aq_pci_func_free_irqs(self->aq_pci_func);
884
885 for (i = 0U, aq_vec = self->aq_vec[0];
886 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
887 aq_vec_stop(aq_vec);
888
889 return self->aq_hw_ops.hw_stop(self->aq_hw);
890}
891
892void aq_nic_deinit(struct aq_nic_s *self)
893{
894 struct aq_vec_s *aq_vec = NULL;
895 unsigned int i = 0U;
896
897 if (!self)
898 goto err_exit;
899
900 for (i = 0U, aq_vec = self->aq_vec[0];
901 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
902 aq_vec_deinit(aq_vec);
903
904 if (self->power_state == AQ_HW_POWER_STATE_D0) {
905 (void)self->aq_hw_ops.hw_deinit(self->aq_hw);
906 } else {
907 (void)self->aq_hw_ops.hw_set_power(self->aq_hw,
908 self->power_state);
909 }
910
911err_exit:;
912}
913
914void aq_nic_free_hot_resources(struct aq_nic_s *self)
915{
916 unsigned int i = 0U;
917
918 if (!self)
919 goto err_exit;
920
921 for (i = AQ_DIMOF(self->aq_vec); i--;) {
922 if (self->aq_vec[i])
923 aq_vec_free(self->aq_vec[i]);
924 }
925
926err_exit:;
927}
928
929int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg)
930{
931 int err = 0;
932
933 if (!netif_running(self->ndev)) {
934 err = 0;
935 goto err_exit;
936 }
937 rtnl_lock();
938 if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) {
939 self->power_state = AQ_HW_POWER_STATE_D3;
940 netif_device_detach(self->ndev);
941 netif_tx_stop_all_queues(self->ndev);
942
943 err = aq_nic_stop(self);
944 if (err < 0)
945 goto err_exit;
946
947 aq_nic_deinit(self);
948 } else {
949 err = aq_nic_init(self);
950 if (err < 0)
951 goto err_exit;
952
953 err = aq_nic_start(self);
954 if (err < 0)
955 goto err_exit;
956
957 netif_device_attach(self->ndev);
958 netif_tx_start_all_queues(self->ndev);
959 }
960 rtnl_unlock();
961
962err_exit:
963 return err;
964}
Linux 6.x block layer and io_uring tree(s)