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Merge remote-tracking branch 'asoc/fix/cs4271' into asoc-linus
[mirror_ubuntu-eoan-kernel.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();
df9000ef
PB		 205 if (!ndev) {
206 err = -ENOMEM;
97bde5c4
DV		 207 goto err_exit;
208 }
209
df9000ef
PB		 210 self = netdev_priv(ndev);
211
97bde5c4
DV		 212 ndev->netdev_ops = ndev_ops;
213 ndev->ethtool_ops = et_ops;
214
215 SET_NETDEV_DEV(ndev, dev);
216
217 ndev->if_port = port;
5513e164 218 ndev->min_mtu = ETH_MIN_MTU;
97bde5c4
DV		 219 self->ndev = ndev;
220
221 self->aq_pci_func = aq_pci_func;
222
223 self->aq_hw_ops = *aq_hw_ops;
224 self->port = (u8)port;
225
226 self->aq_hw = self->aq_hw_ops.create(aq_pci_func, self->port,
227 &self->aq_hw_ops);
228 err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &self->aq_hw_caps);
229 if (err < 0)
230 goto err_exit;
231
232 aq_nic_cfg_init_defaults(self);
233
234err_exit:
235 if (err < 0) {
236 aq_nic_free_hot_resources(self);
237 self = NULL;
238 }
239 return self;
240}
241
242int aq_nic_ndev_register(struct aq_nic_s *self)
243{
244 int err = 0;
245 unsigned int i = 0U;
246
247 if (!self->ndev) {
248 err = -EINVAL;
249 goto err_exit;
250 }
251 err = self->aq_hw_ops.hw_get_mac_permanent(self->aq_hw,
252 self->aq_nic_cfg.aq_hw_caps,
253 self->ndev->dev_addr);
254 if (err < 0)
255 goto err_exit;
256
257#if defined(AQ_CFG_MAC_ADDR_PERMANENT)
258 {
259 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
260
261 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
262 }
263#endif
97bde5c4 264
97bde5c4
DV		 265 netif_carrier_off(self->ndev);
266
267 for (i = AQ_CFG_VECS_MAX; i--;)
268 aq_nic_ndev_queue_stop(self, i);
269
55629109
PB		 270 err = register_netdev(self->ndev);
271 if (err < 0)
272 goto err_exit;
273
97bde5c4
DV		 274err_exit:
275 return err;
276}
277
278int aq_nic_ndev_init(struct aq_nic_s *self)
279{
280 struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
281 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
282
283 self->ndev->hw_features |= aq_hw_caps->hw_features;
284 self->ndev->features = aq_hw_caps->hw_features;
285 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
286 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
287
288 return 0;
289}
290
291void aq_nic_ndev_free(struct aq_nic_s *self)
292{
293 if (!self->ndev)
294 goto err_exit;
295
55629109 296 if (self->ndev->reg_state == NETREG_REGISTERED)
97bde5c4
DV		 297 unregister_netdev(self->ndev);
298
299 if (self->aq_hw)
300 self->aq_hw_ops.destroy(self->aq_hw);
301
302 free_netdev(self->ndev);
303
304err_exit:;
305}
306
307struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev)
308{
309 struct aq_nic_s *self = NULL;
310 int err = 0;
311
312 if (!ndev) {
313 err = -EINVAL;
314 goto err_exit;
315 }
316 self = netdev_priv(ndev);
317
318 if (!self) {
319 err = -EINVAL;
320 goto err_exit;
321 }
322 if (netif_running(ndev)) {
323 unsigned int i;
324
325 for (i = AQ_CFG_VECS_MAX; i--;)
326 netif_stop_subqueue(ndev, i);
327 }
328
329 for (self->aq_vecs = 0; self->aq_vecs < self->aq_nic_cfg.vecs;
330 self->aq_vecs++) {
331 self->aq_vec[self->aq_vecs] =
332 aq_vec_alloc(self, self->aq_vecs, &self->aq_nic_cfg);
333 if (!self->aq_vec[self->aq_vecs]) {
334 err = -ENOMEM;
335 goto err_exit;
336 }
337 }
338
339err_exit:
340 if (err < 0) {
341 aq_nic_free_hot_resources(self);
342 self = NULL;
343 }
344 return self;
345}
346
347void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
348 struct aq_ring_s *ring)
349{
350 self->aq_ring_tx[idx] = ring;
351}
352
353struct device *aq_nic_get_dev(struct aq_nic_s *self)
354{
355 return self->ndev->dev.parent;
356}
357
358struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
359{
360 return self->ndev;
361}
362
363int aq_nic_init(struct aq_nic_s *self)
364{
365 struct aq_vec_s *aq_vec = NULL;
366 int err = 0;
367 unsigned int i = 0U;
368
369 self->power_state = AQ_HW_POWER_STATE_D0;
370 err = self->aq_hw_ops.hw_reset(self->aq_hw);
371 if (err < 0)
372 goto err_exit;
373
374 err = self->aq_hw_ops.hw_init(self->aq_hw, &self->aq_nic_cfg,
375 aq_nic_get_ndev(self)->dev_addr);
376 if (err < 0)
377 goto err_exit;
378
379 for (i = 0U, aq_vec = self->aq_vec[0];
380 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
381 aq_vec_init(aq_vec, &self->aq_hw_ops, self->aq_hw);
382
383err_exit:
384 return err;
385}
386
387void aq_nic_ndev_queue_start(struct aq_nic_s *self, unsigned int idx)
388{
389 netif_start_subqueue(self->ndev, idx);
390}
391
392void aq_nic_ndev_queue_stop(struct aq_nic_s *self, unsigned int idx)
393{
394 netif_stop_subqueue(self->ndev, idx);
395}
396
397int aq_nic_start(struct aq_nic_s *self)
398{
399 struct aq_vec_s *aq_vec = NULL;
400 int err = 0;
401 unsigned int i = 0U;
402
403 err = self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
404 self->mc_list.ar,
405 self->mc_list.count);
406 if (err < 0)
407 goto err_exit;
408
409 err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw,
410 self->packet_filter);
411 if (err < 0)
412 goto err_exit;
413
414 for (i = 0U, aq_vec = self->aq_vec[0];
415 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
416 err = aq_vec_start(aq_vec);
417 if (err < 0)
418 goto err_exit;
419 }
420
421 err = self->aq_hw_ops.hw_start(self->aq_hw);
422 if (err < 0)
423 goto err_exit;
424
425 err = self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw,
426 self->aq_nic_cfg.is_interrupt_moderation);
427 if (err < 0)
428 goto err_exit;
429 setup_timer(&self->service_timer, &aq_nic_service_timer_cb,
430 (unsigned long)self);
431 mod_timer(&self->service_timer, jiffies +
432 AQ_CFG_SERVICE_TIMER_INTERVAL);
433
434 if (self->aq_nic_cfg.is_polling) {
435 setup_timer(&self->polling_timer, &aq_nic_polling_timer_cb,
436 (unsigned long)self);
437 mod_timer(&self->polling_timer, jiffies +
438 AQ_CFG_POLLING_TIMER_INTERVAL);
439 } else {
440 for (i = 0U, aq_vec = self->aq_vec[0];
441 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
442 err = aq_pci_func_alloc_irq(self->aq_pci_func, i,
443 self->ndev->name, aq_vec,
444 aq_vec_get_affinity_mask(aq_vec));
445 if (err < 0)
446 goto err_exit;
447 }
448
449 err = self->aq_hw_ops.hw_irq_enable(self->aq_hw,
450 AQ_CFG_IRQ_MASK);
451 if (err < 0)
452 goto err_exit;
453 }
454
455 for (i = 0U, aq_vec = self->aq_vec[0];
456 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
457 aq_nic_ndev_queue_start(self, i);
458
459 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
460 if (err < 0)
461 goto err_exit;
462
463 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
464 if (err < 0)
465 goto err_exit;
466
467err_exit:
468 return err;
469}
470
e399553d
PB		 471static unsigned int aq_nic_map_skb(struct aq_nic_s *self,
472 struct sk_buff *skb,
473 struct aq_ring_s *ring)
97bde5c4
DV		 474{
475 unsigned int ret = 0U;
476 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
477 unsigned int frag_count = 0U;
e399553d
PB		 478 unsigned int dx = ring->sw_tail;
479 struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx];
97bde5c4 480
e399553d
PB		 481 if (unlikely(skb_is_gso(skb))) {
482 dx_buff->flags = 0U;
483 dx_buff->len_pkt = skb->len;
484 dx_buff->len_l2 = ETH_HLEN;
485 dx_buff->len_l3 = ip_hdrlen(skb);
486 dx_buff->len_l4 = tcp_hdrlen(skb);
487 dx_buff->mss = skb_shinfo(skb)->gso_size;
488 dx_buff->is_txc = 1U;
489
386aff88
PB		 490 dx_buff->is_ipv6 =
491 (ip_hdr(skb)->version == 6) ? 1U : 0U;
492
e399553d
PB		 493 dx = aq_ring_next_dx(ring, dx);
494 dx_buff = &ring->buff_ring[dx];
495 ++ret;
496 }
497
498 dx_buff->flags = 0U;
499 dx_buff->len = skb_headlen(skb);
500 dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
501 skb->data,
502 dx_buff->len,
503 DMA_TO_DEVICE);
97bde5c4 504
e399553d
PB		 505 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa)))
506 goto exit;
507
508 dx_buff->len_pkt = skb->len;
509 dx_buff->is_sop = 1U;
510 dx_buff->is_mapped = 1U;
97bde5c4
DV		 511 ++ret;
512
513 if (skb->ip_summed == CHECKSUM_PARTIAL) {
e399553d
PB		 514 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ?
515 1U : 0U;
ea0504f5
PB		 516
517 if (ip_hdr(skb)->version == 4) {
518 dx_buff->is_tcp_cso =
519 (ip_hdr(skb)->protocol == IPPROTO_TCP) ?
520 1U : 0U;
521 dx_buff->is_udp_cso =
522 (ip_hdr(skb)->protocol == IPPROTO_UDP) ?
523 1U : 0U;
524 } else if (ip_hdr(skb)->version == 6) {
525 dx_buff->is_tcp_cso =
526 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ?
527 1U : 0U;
528 dx_buff->is_udp_cso =
529 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ?
530 1U : 0U;
531 }
97bde5c4
DV		 532 }
533
534 for (; nr_frags--; ++frag_count) {
e399553d 535 unsigned int frag_len = 0U;
97bde5c4
DV		 536 dma_addr_t frag_pa;
537 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
538
539 frag_len = skb_frag_size(frag);
97bde5c4
DV		 540 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), frag, 0,
541 frag_len, DMA_TO_DEVICE);
542
e399553d
PB		 543 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), frag_pa)))
544 goto mapping_error;
545
97bde5c4 546 while (frag_len > AQ_CFG_TX_FRAME_MAX) {
e399553d
PB		 547 dx = aq_ring_next_dx(ring, dx);
548 dx_buff = &ring->buff_ring[dx];
549
550 dx_buff->flags = 0U;
551 dx_buff->len = AQ_CFG_TX_FRAME_MAX;
552 dx_buff->pa = frag_pa;
553 dx_buff->is_mapped = 1U;
97bde5c4
DV		 554
555 frag_len -= AQ_CFG_TX_FRAME_MAX;
556 frag_pa += AQ_CFG_TX_FRAME_MAX;
e399553d 557 ++ret;
97bde5c4
DV		 558 }
559
e399553d
PB		 560 dx = aq_ring_next_dx(ring, dx);
561 dx_buff = &ring->buff_ring[dx];
97bde5c4 562
e399553d
PB		 563 dx_buff->flags = 0U;
564 dx_buff->len = frag_len;
565 dx_buff->pa = frag_pa;
566 dx_buff->is_mapped = 1U;
567 ++ret;
97bde5c4
DV		 568 }
569
e399553d
PB		 570 dx_buff->is_eop = 1U;
571 dx_buff->skb = skb;
572 goto exit;
573
574mapping_error:
575 for (dx = ring->sw_tail;
576 ret > 0;
577 --ret, dx = aq_ring_next_dx(ring, dx)) {
578 dx_buff = &ring->buff_ring[dx];
579
580 if (!dx_buff->is_txc && dx_buff->pa) {
581 if (unlikely(dx_buff->is_sop)) {
582 dma_unmap_single(aq_nic_get_dev(self),
583 dx_buff->pa,
584 dx_buff->len,
585 DMA_TO_DEVICE);
586 } else {
587 dma_unmap_page(aq_nic_get_dev(self),
588 dx_buff->pa,
589 dx_buff->len,
590 DMA_TO_DEVICE);
591 }
592 }
97bde5c4
DV		 593 }
594
e399553d 595exit:
97bde5c4
DV		 596 return ret;
597}
598
599int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
600__releases(&ring->lock)
601__acquires(&ring->lock)
602{
603 struct aq_ring_s *ring = NULL;
604 unsigned int frags = 0U;
605 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
606 unsigned int tc = 0U;
607 unsigned int trys = AQ_CFG_LOCK_TRYS;
b350d7b8 608 int err = NETDEV_TX_OK;
97bde5c4 609 bool is_nic_in_bad_state;
97bde5c4
DV		 610
611 frags = skb_shinfo(skb)->nr_frags + 1;
612
613 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
614
97bde5c4
DV		 615 if (frags > AQ_CFG_SKB_FRAGS_MAX) {
616 dev_kfree_skb_any(skb);
617 goto err_exit;
618 }
619
620 is_nic_in_bad_state = aq_utils_obj_test(&self->header.flags,
621 AQ_NIC_FLAGS_IS_NOT_TX_READY) ||
622 (aq_ring_avail_dx(ring) <
623 AQ_CFG_SKB_FRAGS_MAX);
624
625 if (is_nic_in_bad_state) {
626 aq_nic_ndev_queue_stop(self, ring->idx);
627 err = NETDEV_TX_BUSY;
628 goto err_exit;
629 }
630
631 do {
632 if (spin_trylock(&ring->header.lock)) {
e399553d
PB		 633 frags = aq_nic_map_skb(self, skb, ring);
634
635 if (likely(frags)) {
636 err = self->aq_hw_ops.hw_ring_tx_xmit(
637 self->aq_hw,
638 ring, frags);
639 if (err >= 0) {
640 if (aq_ring_avail_dx(ring) <
641 AQ_CFG_SKB_FRAGS_MAX + 1)
642 aq_nic_ndev_queue_stop(
643 self,
644 ring->idx);
645
646 ++ring->stats.tx.packets;
647 ring->stats.tx.bytes += skb->len;
648 }
649 } else {
650 err = NETDEV_TX_BUSY;
97bde5c4 651 }
97bde5c4 652
e399553d 653 spin_unlock(&ring->header.lock);
97bde5c4
DV		 654 break;
655 }
656 } while (--trys);
657
658 if (!trys) {
659 err = NETDEV_TX_BUSY;
660 goto err_exit;
661 }
662
663err_exit:
97bde5c4
DV		 664 return err;
665}
666
667int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
668{
669 int err = 0;
670
671 err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, flags);
672 if (err < 0)
673 goto err_exit;
674
675 self->packet_filter = flags;
676
677err_exit:
678 return err;
679}
680
681int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
682{
683 struct netdev_hw_addr *ha = NULL;
684 unsigned int i = 0U;
685
686 self->mc_list.count = 0U;
687
688 netdev_for_each_mc_addr(ha, ndev) {
689 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
690 ++self->mc_list.count;
691 }
692
693 return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
694 self->mc_list.ar,
695 self->mc_list.count);
696}
697
698int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
699{
700 int err = 0;
701
702 if (new_mtu > self->aq_hw_caps.mtu) {
703 err = -EINVAL;
704 goto err_exit;
705 }
706 self->aq_nic_cfg.mtu = new_mtu;
707
708err_exit:
709 return err;
710}
711
712int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
713{
714 return self->aq_hw_ops.hw_set_mac_address(self->aq_hw, ndev->dev_addr);
715}
716
717unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
718{
719 return self->link_status.mbps;
720}
721
722int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
723{
724 u32 *regs_buff = p;
725 int err = 0;
726
727 regs->version = 1;
728
729 err = self->aq_hw_ops.hw_get_regs(self->aq_hw,
730 &self->aq_hw_caps, regs_buff);
731 if (err < 0)
732 goto err_exit;
733
734err_exit:
735 return err;
736}
737
738int aq_nic_get_regs_count(struct aq_nic_s *self)
739{
740 return self->aq_hw_caps.mac_regs_count;
741}
742
743void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
744{
745 struct aq_vec_s *aq_vec = NULL;
746 unsigned int i = 0U;
747 unsigned int count = 0U;
748 int err = 0;
749
750 err = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw, data, &count);
751 if (err < 0)
752 goto err_exit;
753
754 data += count;
755 count = 0U;
756
757 for (i = 0U, aq_vec = self->aq_vec[0];
758 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
759 data += count;
760 aq_vec_get_sw_stats(aq_vec, data, &count);
761 }
762
763err_exit:;
764 (void)err;
765}
766
f8244ab5
PR		 767void aq_nic_get_link_ksettings(struct aq_nic_s *self,
768 struct ethtool_link_ksettings *cmd)
97bde5c4 769{
f8244ab5 770 cmd->base.port = PORT_TP;
97bde5c4 771 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
f8244ab5
PR		 772 cmd->base.duplex = DUPLEX_FULL;
773 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
774
8f9000a5
PB		 775 ethtool_link_ksettings_zero_link_mode(cmd, supported);
776
777 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_10G)
778 ethtool_link_ksettings_add_link_mode(cmd, supported,
779 10000baseT_Full);
780
781 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_5G)
782 ethtool_link_ksettings_add_link_mode(cmd, supported,
783 5000baseT_Full);
784
785 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_2GS)
786 ethtool_link_ksettings_add_link_mode(cmd, supported,
787 2500baseT_Full);
788
789 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_1G)
790 ethtool_link_ksettings_add_link_mode(cmd, supported,
791 1000baseT_Full);
792
793 if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_100M)
794 ethtool_link_ksettings_add_link_mode(cmd, supported,
795 100baseT_Full);
796
797 if (self->aq_hw_caps.flow_control)
798 ethtool_link_ksettings_add_link_mode(cmd, supported,
799 Pause);
800
801 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
802 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
803
804 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
805
806 if (self->aq_nic_cfg.is_autoneg)
807 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
808
809 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
810 ethtool_link_ksettings_add_link_mode(cmd, advertising,
811 10000baseT_Full);
812
813 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
814 ethtool_link_ksettings_add_link_mode(cmd, advertising,
815 5000baseT_Full);
816
817 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS)
818 ethtool_link_ksettings_add_link_mode(cmd, advertising,
819 2500baseT_Full);
820
821 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
822 ethtool_link_ksettings_add_link_mode(cmd, advertising,
823 1000baseT_Full);
824
825 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
826 ethtool_link_ksettings_add_link_mode(cmd, advertising,
827 100baseT_Full);
828
829 if (self->aq_nic_cfg.flow_control)
830 ethtool_link_ksettings_add_link_mode(cmd, advertising,
831 Pause);
832
833 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
97bde5c4
DV		 834}
835
f8244ab5
PR		 836int aq_nic_set_link_ksettings(struct aq_nic_s *self,
837 const struct ethtool_link_ksettings *cmd)
97bde5c4
DV		 838{
839 u32 speed = 0U;
840 u32 rate = 0U;
841 int err = 0;
842
f8244ab5 843 if (cmd->base.autoneg == AUTONEG_ENABLE) {
97bde5c4
DV		 844 rate = self->aq_hw_caps.link_speed_msk;
845 self->aq_nic_cfg.is_autoneg = true;
846 } else {
f8244ab5 847 speed = cmd->base.speed;
97bde5c4
DV		 848
849 switch (speed) {
850 case SPEED_100:
851 rate = AQ_NIC_RATE_100M;
852 break;
853
854 case SPEED_1000:
855 rate = AQ_NIC_RATE_1G;
856 break;
857
858 case SPEED_2500:
859 rate = AQ_NIC_RATE_2GS;
860 break;
861
862 case SPEED_5000:
863 rate = AQ_NIC_RATE_5G;
864 break;
865
866 case SPEED_10000:
867 rate = AQ_NIC_RATE_10G;
868 break;
869
870 default:
871 err = -1;
872 goto err_exit;
873 break;
874 }
875 if (!(self->aq_hw_caps.link_speed_msk & rate)) {
876 err = -1;
877 goto err_exit;
878 }
879
880 self->aq_nic_cfg.is_autoneg = false;
881 }
882
883 err = self->aq_hw_ops.hw_set_link_speed(self->aq_hw, rate);
884 if (err < 0)
885 goto err_exit;
886
887 self->aq_nic_cfg.link_speed_msk = rate;
888
889err_exit:
890 return err;
891}
892
893struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
894{
895 return &self->aq_nic_cfg;
896}
897
898u32 aq_nic_get_fw_version(struct aq_nic_s *self)
899{
900 u32 fw_version = 0U;
901
902 self->aq_hw_ops.hw_get_fw_version(self->aq_hw, &fw_version);
903
904 return fw_version;
905}
906
907int aq_nic_stop(struct aq_nic_s *self)
908{
909 struct aq_vec_s *aq_vec = NULL;
910 unsigned int i = 0U;
911
912 for (i = 0U, aq_vec = self->aq_vec[0];
913 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
914 aq_nic_ndev_queue_stop(self, i);
915
916 del_timer_sync(&self->service_timer);
917
918 self->aq_hw_ops.hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
919
920 if (self->aq_nic_cfg.is_polling)
921 del_timer_sync(&self->polling_timer);
922 else
923 aq_pci_func_free_irqs(self->aq_pci_func);
924
925 for (i = 0U, aq_vec = self->aq_vec[0];
926 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
927 aq_vec_stop(aq_vec);
928
929 return self->aq_hw_ops.hw_stop(self->aq_hw);
930}
931
932void aq_nic_deinit(struct aq_nic_s *self)
933{
934 struct aq_vec_s *aq_vec = NULL;
935 unsigned int i = 0U;
936
937 if (!self)
938 goto err_exit;
939
940 for (i = 0U, aq_vec = self->aq_vec[0];
941 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
942 aq_vec_deinit(aq_vec);
943
944 if (self->power_state == AQ_HW_POWER_STATE_D0) {
945 (void)self->aq_hw_ops.hw_deinit(self->aq_hw);
946 } else {
947 (void)self->aq_hw_ops.hw_set_power(self->aq_hw,
948 self->power_state);
949 }
950
951err_exit:;
952}
953
954void aq_nic_free_hot_resources(struct aq_nic_s *self)
955{
956 unsigned int i = 0U;
957
958 if (!self)
959 goto err_exit;
960
961 for (i = AQ_DIMOF(self->aq_vec); i--;) {
962 if (self->aq_vec[i])
963 aq_vec_free(self->aq_vec[i]);
964 }
965
966err_exit:;
967}
968
969int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg)
970{
971 int err = 0;
972
973 if (!netif_running(self->ndev)) {
974 err = 0;
d5919aeb 975 goto out;
97bde5c4
DV		 976 }
977 rtnl_lock();
978 if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) {
979 self->power_state = AQ_HW_POWER_STATE_D3;
980 netif_device_detach(self->ndev);
981 netif_tx_stop_all_queues(self->ndev);
982
983 err = aq_nic_stop(self);
984 if (err < 0)
985 goto err_exit;
986
987 aq_nic_deinit(self);
988 } else {
989 err = aq_nic_init(self);
990 if (err < 0)
991 goto err_exit;
992
993 err = aq_nic_start(self);
994 if (err < 0)
995 goto err_exit;
996
997 netif_device_attach(self->ndev);
998 netif_tx_start_all_queues(self->ndev);
999 }
97bde5c4
DV		 1000
1001err_exit:
d5919aeb
PB		 1002 rtnl_unlock();
1003out:
97bde5c4
DV		 1004 return err;
1005}
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