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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / aquantia / atlantic / aq_nic.c
bloba369705a786a3300cbbb3070dd8a9f38c3fb598e
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * aQuantia Corporation Network Driver
4 * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved
5 */
6
7 /* File aq_nic.c: Definition of common code for NIC. */
8
9 #include "aq_nic.h"
10 #include "aq_ring.h"
11 #include "aq_vec.h"
12 #include "aq_hw.h"
13 #include "aq_pci_func.h"
14 #include "aq_macsec.h"
15 #include "aq_main.h"
16 #include "aq_phy.h"
17 #include "aq_ptp.h"
18 #include "aq_filters.h"
19
20 #include <linux/moduleparam.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/timer.h>
24 #include <linux/cpu.h>
25 #include <linux/ip.h>
26 #include <linux/tcp.h>
27 #include <net/ip.h>
28
29 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
30 module_param_named(aq_itr, aq_itr, uint, 0644);
31 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
32
33 static unsigned int aq_itr_tx;
34 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
35 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
36
37 static unsigned int aq_itr_rx;
38 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
39 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
40
41 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
42
43 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
44 {
45 static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
46 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
47 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
48 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
49 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
50 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
51 };
52 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
53 struct aq_rss_parameters *rss_params;
54 int i = 0;
55
56 rss_params = &cfg->aq_rss;
57
58 rss_params->hash_secret_key_size = sizeof(rss_key);
59 memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
60 rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
61
62 for (i = rss_params->indirection_table_size; i--;)
63 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
64 }
65
66 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
67 void aq_nic_cfg_start(struct aq_nic_s *self)
68 {
69 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
70
71 cfg->tcs = AQ_CFG_TCS_DEF;
72
73 cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
74
75 cfg->itr = aq_itr;
76 cfg->tx_itr = aq_itr_tx;
77 cfg->rx_itr = aq_itr_rx;
78
79 cfg->rxpageorder = AQ_CFG_RX_PAGEORDER;
80 cfg->is_rss = AQ_CFG_IS_RSS_DEF;
81 cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
82 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
83 cfg->fc.req = AQ_CFG_FC_MODE;
84 cfg->wol = AQ_CFG_WOL_MODES;
85
86 cfg->mtu = AQ_CFG_MTU_DEF;
87 cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
88 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
89
90 cfg->is_lro = AQ_CFG_IS_LRO_DEF;
91
92 /*descriptors */
93 cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
94 cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
95
96 /*rss rings */
97 cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
98 cfg->vecs = min(cfg->vecs, num_online_cpus());
99 if (self->irqvecs > AQ_HW_SERVICE_IRQS)
100 cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
101 /* cfg->vecs should be power of 2 for RSS */
102 if (cfg->vecs >= 8U)
103 cfg->vecs = 8U;
104 else if (cfg->vecs >= 4U)
105 cfg->vecs = 4U;
106 else if (cfg->vecs >= 2U)
107 cfg->vecs = 2U;
108 else
109 cfg->vecs = 1U;
110
111 cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
112
113 aq_nic_rss_init(self, cfg->num_rss_queues);
114
115 cfg->irq_type = aq_pci_func_get_irq_type(self);
116
117 if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
118 (cfg->aq_hw_caps->vecs == 1U) ||
119 (cfg->vecs == 1U)) {
120 cfg->is_rss = 0U;
121 cfg->vecs = 1U;
122 }
123
124 /* Check if we have enough vectors allocated for
125 * link status IRQ. If no - we'll know link state from
126 * slower service task.
127 */
128 if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs)
129 cfg->link_irq_vec = cfg->vecs;
130 else
131 cfg->link_irq_vec = 0;
132
133 cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
134 cfg->features = cfg->aq_hw_caps->hw_features;
135 cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
136 cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
137 cfg->is_vlan_force_promisc = true;
138 }
139
140 static int aq_nic_update_link_status(struct aq_nic_s *self)
141 {
142 int err = self->aq_fw_ops->update_link_status(self->aq_hw);
143 u32 fc = 0;
144
145 if (err)
146 return err;
147
148 if (self->aq_fw_ops->get_flow_control)
149 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
150 self->aq_nic_cfg.fc.cur = fc;
151
152 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
153 netdev_info(self->ndev, "%s: link change old %d new %d\n",
154 AQ_CFG_DRV_NAME, self->link_status.mbps,
155 self->aq_hw->aq_link_status.mbps);
156 aq_nic_update_interrupt_moderation_settings(self);
157
158 if (self->aq_ptp) {
159 aq_ptp_clock_init(self);
160 aq_ptp_tm_offset_set(self,
161 self->aq_hw->aq_link_status.mbps);
162 aq_ptp_link_change(self);
163 }
164
165 /* Driver has to update flow control settings on RX block
166 * on any link event.
167 * We should query FW whether it negotiated FC.
168 */
169 if (self->aq_hw_ops->hw_set_fc)
170 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
171 }
172
173 self->link_status = self->aq_hw->aq_link_status;
174 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
175 aq_utils_obj_set(&self->flags,
176 AQ_NIC_FLAG_STARTED);
177 aq_utils_obj_clear(&self->flags,
178 AQ_NIC_LINK_DOWN);
179 netif_carrier_on(self->ndev);
180 #if IS_ENABLED(CONFIG_MACSEC)
181 aq_macsec_enable(self);
182 #endif
183 netif_tx_wake_all_queues(self->ndev);
184 }
185 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
186 netif_carrier_off(self->ndev);
187 netif_tx_disable(self->ndev);
188 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
189 }
190
191 return 0;
192 }
193
194 static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
195 {
196 struct aq_nic_s *self = private;
197
198 if (!self)
199 return IRQ_NONE;
200
201 aq_nic_update_link_status(self);
202
203 self->aq_hw_ops->hw_irq_enable(self->aq_hw,
204 BIT(self->aq_nic_cfg.link_irq_vec));
205
206 return IRQ_HANDLED;
207 }
208
209 static void aq_nic_service_task(struct work_struct *work)
210 {
211 struct aq_nic_s *self = container_of(work, struct aq_nic_s,
212 service_task);
213 int err;
214
215 aq_ptp_service_task(self);
216
217 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
218 return;
219
220 err = aq_nic_update_link_status(self);
221 if (err)
222 return;
223
224 #if IS_ENABLED(CONFIG_MACSEC)
225 aq_macsec_work(self);
226 #endif
227
228 mutex_lock(&self->fwreq_mutex);
229 if (self->aq_fw_ops->update_stats)
230 self->aq_fw_ops->update_stats(self->aq_hw);
231 mutex_unlock(&self->fwreq_mutex);
232
233 aq_nic_update_ndev_stats(self);
234 }
235
236 static void aq_nic_service_timer_cb(struct timer_list *t)
237 {
238 struct aq_nic_s *self = from_timer(self, t, service_timer);
239
240 mod_timer(&self->service_timer,
241 jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
242
243 aq_ndev_schedule_work(&self->service_task);
244 }
245
246 static void aq_nic_polling_timer_cb(struct timer_list *t)
247 {
248 struct aq_nic_s *self = from_timer(self, t, polling_timer);
249 struct aq_vec_s *aq_vec = NULL;
250 unsigned int i = 0U;
251
252 for (i = 0U, aq_vec = self->aq_vec[0];
253 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
254 aq_vec_isr(i, (void *)aq_vec);
255
256 mod_timer(&self->polling_timer, jiffies +
257 AQ_CFG_POLLING_TIMER_INTERVAL);
258 }
259
260 int aq_nic_ndev_register(struct aq_nic_s *self)
261 {
262 int err = 0;
263
264 if (!self->ndev) {
265 err = -EINVAL;
266 goto err_exit;
267 }
268
269 err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
270 if (err)
271 goto err_exit;
272
273 #if IS_ENABLED(CONFIG_MACSEC)
274 aq_macsec_init(self);
275 #endif
276
277 mutex_lock(&self->fwreq_mutex);
278 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
279 self->ndev->dev_addr);
280 mutex_unlock(&self->fwreq_mutex);
281 if (err)
282 goto err_exit;
283
284 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
285 {
286 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
287
288 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
289 }
290 #endif
291
292 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
293 self->aq_vecs++) {
294 self->aq_vec[self->aq_vecs] =
295 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
296 if (!self->aq_vec[self->aq_vecs]) {
297 err = -ENOMEM;
298 goto err_exit;
299 }
300 }
301
302 netif_carrier_off(self->ndev);
303
304 netif_tx_disable(self->ndev);
305
306 err = register_netdev(self->ndev);
307 if (err)
308 goto err_exit;
309
310 err_exit:
311 #if IS_ENABLED(CONFIG_MACSEC)
312 if (err)
313 aq_macsec_free(self);
314 #endif
315 return err;
316 }
317
318 void aq_nic_ndev_init(struct aq_nic_s *self)
319 {
320 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
321 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
322
323 self->ndev->hw_features |= aq_hw_caps->hw_features;
324 self->ndev->features = aq_hw_caps->hw_features;
325 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
326 NETIF_F_RXHASH | NETIF_F_SG |
327 NETIF_F_LRO | NETIF_F_TSO;
328 self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
329 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
330 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
331
332 self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK;
333 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
334 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
335
336 }
337
338 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
339 struct aq_ring_s *ring)
340 {
341 self->aq_ring_tx[idx] = ring;
342 }
343
344 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
345 {
346 return self->ndev;
347 }
348
349 int aq_nic_init(struct aq_nic_s *self)
350 {
351 struct aq_vec_s *aq_vec = NULL;
352 unsigned int i = 0U;
353 int err = 0;
354
355 self->power_state = AQ_HW_POWER_STATE_D0;
356 mutex_lock(&self->fwreq_mutex);
357 err = self->aq_hw_ops->hw_reset(self->aq_hw);
358 mutex_unlock(&self->fwreq_mutex);
359 if (err < 0)
360 goto err_exit;
361
362 err = self->aq_hw_ops->hw_init(self->aq_hw,
363 aq_nic_get_ndev(self)->dev_addr);
364 if (err < 0)
365 goto err_exit;
366
367 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
368 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
369 err = aq_phy_init(self->aq_hw);
370 }
371
372 for (i = 0U, aq_vec = self->aq_vec[0];
373 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
374 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
375
376 err = aq_ptp_init(self, self->irqvecs - 1);
377 if (err < 0)
378 goto err_exit;
379
380 err = aq_ptp_ring_alloc(self);
381 if (err < 0)
382 goto err_exit;
383
384 err = aq_ptp_ring_init(self);
385 if (err < 0)
386 goto err_exit;
387
388 netif_carrier_off(self->ndev);
389
390 err_exit:
391 return err;
392 }
393
394 int aq_nic_start(struct aq_nic_s *self)
395 {
396 struct aq_vec_s *aq_vec = NULL;
397 unsigned int i = 0U;
398 int err = 0;
399
400 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
401 self->mc_list.ar,
402 self->mc_list.count);
403 if (err < 0)
404 goto err_exit;
405
406 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
407 self->packet_filter);
408 if (err < 0)
409 goto err_exit;
410
411 for (i = 0U, aq_vec = self->aq_vec[0];
412 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
413 err = aq_vec_start(aq_vec);
414 if (err < 0)
415 goto err_exit;
416 }
417
418 err = aq_ptp_ring_start(self);
419 if (err < 0)
420 goto err_exit;
421
422 aq_nic_set_loopback(self);
423
424 err = self->aq_hw_ops->hw_start(self->aq_hw);
425 if (err < 0)
426 goto err_exit;
427
428 err = aq_nic_update_interrupt_moderation_settings(self);
429 if (err)
430 goto err_exit;
431
432 INIT_WORK(&self->service_task, aq_nic_service_task);
433
434 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
435 aq_nic_service_timer_cb(&self->service_timer);
436
437 if (self->aq_nic_cfg.is_polling) {
438 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
439 mod_timer(&self->polling_timer, jiffies +
440 AQ_CFG_POLLING_TIMER_INTERVAL);
441 } else {
442 for (i = 0U, aq_vec = self->aq_vec[0];
443 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
444 err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
445 aq_vec_isr, aq_vec,
446 aq_vec_get_affinity_mask(aq_vec));
447 if (err < 0)
448 goto err_exit;
449 }
450
451 err = aq_ptp_irq_alloc(self);
452 if (err < 0)
453 goto err_exit;
454
455 if (self->aq_nic_cfg.link_irq_vec) {
456 int irqvec = pci_irq_vector(self->pdev,
457 self->aq_nic_cfg.link_irq_vec);
458 err = request_threaded_irq(irqvec, NULL,
459 aq_linkstate_threaded_isr,
460 IRQF_SHARED | IRQF_ONESHOT,
461 self->ndev->name, self);
462 if (err < 0)
463 goto err_exit;
464 self->msix_entry_mask |= (1 << self->aq_nic_cfg.link_irq_vec);
465 }
466
467 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
468 AQ_CFG_IRQ_MASK);
469 if (err < 0)
470 goto err_exit;
471 }
472
473 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
474 if (err < 0)
475 goto err_exit;
476
477 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
478 if (err < 0)
479 goto err_exit;
480
481 netif_tx_start_all_queues(self->ndev);
482
483 err_exit:
484 return err;
485 }
486
487 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
488 struct aq_ring_s *ring)
489 {
490 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
491 struct aq_ring_buff_s *first = NULL;
492 u8 ipver = ip_hdr(skb)->version;
493 struct aq_ring_buff_s *dx_buff;
494 bool need_context_tag = false;
495 unsigned int frag_count = 0U;
496 unsigned int ret = 0U;
497 unsigned int dx;
498 u8 l4proto = 0;
499
500 if (ipver == 4)
501 l4proto = ip_hdr(skb)->protocol;
502 else if (ipver == 6)
503 l4proto = ipv6_hdr(skb)->nexthdr;
504
505 dx = ring->sw_tail;
506 dx_buff = &ring->buff_ring[dx];
507 dx_buff->flags = 0U;
508
509 if (unlikely(skb_is_gso(skb))) {
510 dx_buff->mss = skb_shinfo(skb)->gso_size;
511 if (l4proto == IPPROTO_TCP) {
512 dx_buff->is_gso_tcp = 1U;
513 dx_buff->len_l4 = tcp_hdrlen(skb);
514 } else if (l4proto == IPPROTO_UDP) {
515 dx_buff->is_gso_udp = 1U;
516 dx_buff->len_l4 = sizeof(struct udphdr);
517 /* UDP GSO Hardware does not replace packet length. */
518 udp_hdr(skb)->len = htons(dx_buff->mss +
519 dx_buff->len_l4);
520 } else {
521 WARN_ONCE(true, "Bad GSO mode");
522 goto exit;
523 }
524 dx_buff->len_pkt = skb->len;
525 dx_buff->len_l2 = ETH_HLEN;
526 dx_buff->len_l3 = skb_network_header_len(skb);
527 dx_buff->eop_index = 0xffffU;
528 dx_buff->is_ipv6 = (ipver == 6);
529 need_context_tag = true;
530 }
531
532 if (self->aq_nic_cfg.is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
533 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
534 dx_buff->len_pkt = skb->len;
535 dx_buff->is_vlan = 1U;
536 need_context_tag = true;
537 }
538
539 if (need_context_tag) {
540 dx = aq_ring_next_dx(ring, dx);
541 dx_buff = &ring->buff_ring[dx];
542 dx_buff->flags = 0U;
543 ++ret;
544 }
545
546 dx_buff->len = skb_headlen(skb);
547 dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
548 skb->data,
549 dx_buff->len,
550 DMA_TO_DEVICE);
551
552 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa))) {
553 ret = 0;
554 goto exit;
555 }
556
557 first = dx_buff;
558 dx_buff->len_pkt = skb->len;
559 dx_buff->is_sop = 1U;
560 dx_buff->is_mapped = 1U;
561 ++ret;
562
563 if (skb->ip_summed == CHECKSUM_PARTIAL) {
564 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
565 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
566 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
567 }
568
569 for (; nr_frags--; ++frag_count) {
570 unsigned int frag_len = 0U;
571 unsigned int buff_offset = 0U;
572 unsigned int buff_size = 0U;
573 dma_addr_t frag_pa;
574 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
575
576 frag_len = skb_frag_size(frag);
577
578 while (frag_len) {
579 if (frag_len > AQ_CFG_TX_FRAME_MAX)
580 buff_size = AQ_CFG_TX_FRAME_MAX;
581 else
582 buff_size = frag_len;
583
584 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
585 frag,
586 buff_offset,
587 buff_size,
588 DMA_TO_DEVICE);
589
590 if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
591 frag_pa)))
592 goto mapping_error;
593
594 dx = aq_ring_next_dx(ring, dx);
595 dx_buff = &ring->buff_ring[dx];
596
597 dx_buff->flags = 0U;
598 dx_buff->len = buff_size;
599 dx_buff->pa = frag_pa;
600 dx_buff->is_mapped = 1U;
601 dx_buff->eop_index = 0xffffU;
602
603 frag_len -= buff_size;
604 buff_offset += buff_size;
605
606 ++ret;
607 }
608 }
609
610 first->eop_index = dx;
611 dx_buff->is_eop = 1U;
612 dx_buff->skb = skb;
613 goto exit;
614
615 mapping_error:
616 for (dx = ring->sw_tail;
617 ret > 0;
618 --ret, dx = aq_ring_next_dx(ring, dx)) {
619 dx_buff = &ring->buff_ring[dx];
620
621 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
622 !dx_buff->is_vlan && dx_buff->pa) {
623 if (unlikely(dx_buff->is_sop)) {
624 dma_unmap_single(aq_nic_get_dev(self),
625 dx_buff->pa,
626 dx_buff->len,
627 DMA_TO_DEVICE);
628 } else {
629 dma_unmap_page(aq_nic_get_dev(self),
630 dx_buff->pa,
631 dx_buff->len,
632 DMA_TO_DEVICE);
633 }
634 }
635 }
636
637 exit:
638 return ret;
639 }
640
641 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
642 {
643 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
644 struct aq_ring_s *ring = NULL;
645 unsigned int frags = 0U;
646 int err = NETDEV_TX_OK;
647 unsigned int tc = 0U;
648
649 frags = skb_shinfo(skb)->nr_frags + 1;
650
651 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
652
653 if (frags > AQ_CFG_SKB_FRAGS_MAX) {
654 dev_kfree_skb_any(skb);
655 goto err_exit;
656 }
657
658 aq_ring_update_queue_state(ring);
659
660 if (self->aq_nic_cfg.priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
661 err = NETDEV_TX_BUSY;
662 goto err_exit;
663 }
664
665 /* Above status update may stop the queue. Check this. */
666 if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
667 err = NETDEV_TX_BUSY;
668 goto err_exit;
669 }
670
671 frags = aq_nic_map_skb(self, skb, ring);
672
673 if (likely(frags)) {
674 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
675 ring, frags);
676 } else {
677 err = NETDEV_TX_BUSY;
678 }
679
680 err_exit:
681 return err;
682 }
683
684 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
685 {
686 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
687 }
688
689 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
690 {
691 int err = 0;
692
693 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
694 if (err < 0)
695 goto err_exit;
696
697 self->packet_filter = flags;
698
699 err_exit:
700 return err;
701 }
702
703 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
704 {
705 const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
706 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
707 unsigned int packet_filter = ndev->flags;
708 struct netdev_hw_addr *ha = NULL;
709 unsigned int i = 0U;
710 int err = 0;
711
712 self->mc_list.count = 0;
713 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
714 packet_filter |= IFF_PROMISC;
715 } else {
716 netdev_for_each_uc_addr(ha, ndev) {
717 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
718 }
719 }
720
721 cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
722 if (cfg->is_mc_list_enabled) {
723 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
724 packet_filter |= IFF_ALLMULTI;
725 } else {
726 netdev_for_each_mc_addr(ha, ndev) {
727 ether_addr_copy(self->mc_list.ar[i++],
728 ha->addr);
729 }
730 }
731 }
732
733 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
734 self->mc_list.count = i;
735 err = hw_ops->hw_multicast_list_set(self->aq_hw,
736 self->mc_list.ar,
737 self->mc_list.count);
738 if (err < 0)
739 return err;
740 }
741
742 return aq_nic_set_packet_filter(self, packet_filter);
743 }
744
745 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
746 {
747 self->aq_nic_cfg.mtu = new_mtu;
748
749 return 0;
750 }
751
752 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
753 {
754 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
755 }
756
757 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
758 {
759 return self->link_status.mbps;
760 }
761
762 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
763 {
764 u32 *regs_buff = p;
765 int err = 0;
766
767 regs->version = 1;
768
769 err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
770 self->aq_nic_cfg.aq_hw_caps,
771 regs_buff);
772 if (err < 0)
773 goto err_exit;
774
775 err_exit:
776 return err;
777 }
778
779 int aq_nic_get_regs_count(struct aq_nic_s *self)
780 {
781 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
782 }
783
784 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
785 {
786 struct aq_vec_s *aq_vec = NULL;
787 struct aq_stats_s *stats;
788 unsigned int count = 0U;
789 unsigned int i = 0U;
790
791 if (self->aq_fw_ops->update_stats) {
792 mutex_lock(&self->fwreq_mutex);
793 self->aq_fw_ops->update_stats(self->aq_hw);
794 mutex_unlock(&self->fwreq_mutex);
795 }
796 stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
797
798 if (!stats)
799 goto err_exit;
800
801 data[i] = stats->uprc + stats->mprc + stats->bprc;
802 data[++i] = stats->uprc;
803 data[++i] = stats->mprc;
804 data[++i] = stats->bprc;
805 data[++i] = stats->erpt;
806 data[++i] = stats->uptc + stats->mptc + stats->bptc;
807 data[++i] = stats->uptc;
808 data[++i] = stats->mptc;
809 data[++i] = stats->bptc;
810 data[++i] = stats->ubrc;
811 data[++i] = stats->ubtc;
812 data[++i] = stats->mbrc;
813 data[++i] = stats->mbtc;
814 data[++i] = stats->bbrc;
815 data[++i] = stats->bbtc;
816 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
817 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
818 data[++i] = stats->dma_pkt_rc;
819 data[++i] = stats->dma_pkt_tc;
820 data[++i] = stats->dma_oct_rc;
821 data[++i] = stats->dma_oct_tc;
822 data[++i] = stats->dpc;
823
824 i++;
825
826 data += i;
827
828 for (i = 0U, aq_vec = self->aq_vec[0];
829 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
830 data += count;
831 aq_vec_get_sw_stats(aq_vec, data, &count);
832 }
833
834 data += count;
835
836 err_exit:;
837 return data;
838 }
839
840 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
841 {
842 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
843 struct net_device *ndev = self->ndev;
844
845 ndev->stats.rx_packets = stats->dma_pkt_rc;
846 ndev->stats.rx_bytes = stats->dma_oct_rc;
847 ndev->stats.rx_errors = stats->erpr;
848 ndev->stats.rx_dropped = stats->dpc;
849 ndev->stats.tx_packets = stats->dma_pkt_tc;
850 ndev->stats.tx_bytes = stats->dma_oct_tc;
851 ndev->stats.tx_errors = stats->erpt;
852 ndev->stats.multicast = stats->mprc;
853 }
854
855 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
856 struct ethtool_link_ksettings *cmd)
857 {
858 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
859 cmd->base.port = PORT_FIBRE;
860 else
861 cmd->base.port = PORT_TP;
862 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
863 cmd->base.duplex = DUPLEX_FULL;
864 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
865
866 ethtool_link_ksettings_zero_link_mode(cmd, supported);
867
868 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
869 ethtool_link_ksettings_add_link_mode(cmd, supported,
870 10000baseT_Full);
871
872 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
873 ethtool_link_ksettings_add_link_mode(cmd, supported,
874 5000baseT_Full);
875
876 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
877 ethtool_link_ksettings_add_link_mode(cmd, supported,
878 2500baseT_Full);
879
880 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
881 ethtool_link_ksettings_add_link_mode(cmd, supported,
882 1000baseT_Full);
883
884 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
885 ethtool_link_ksettings_add_link_mode(cmd, supported,
886 100baseT_Full);
887
888 if (self->aq_nic_cfg.aq_hw_caps->flow_control) {
889 ethtool_link_ksettings_add_link_mode(cmd, supported,
890 Pause);
891 ethtool_link_ksettings_add_link_mode(cmd, supported,
892 Asym_Pause);
893 }
894
895 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
896
897 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
898 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
899 else
900 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
901
902 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
903
904 if (self->aq_nic_cfg.is_autoneg)
905 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
906
907 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
908 ethtool_link_ksettings_add_link_mode(cmd, advertising,
909 10000baseT_Full);
910
911 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
912 ethtool_link_ksettings_add_link_mode(cmd, advertising,
913 5000baseT_Full);
914
915 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS)
916 ethtool_link_ksettings_add_link_mode(cmd, advertising,
917 2500baseT_Full);
918
919 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
920 ethtool_link_ksettings_add_link_mode(cmd, advertising,
921 1000baseT_Full);
922
923 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
924 ethtool_link_ksettings_add_link_mode(cmd, advertising,
925 100baseT_Full);
926
927 if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)
928 ethtool_link_ksettings_add_link_mode(cmd, advertising,
929 Pause);
930
931 /* Asym is when either RX or TX, but not both */
932 if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^
933 !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX))
934 ethtool_link_ksettings_add_link_mode(cmd, advertising,
935 Asym_Pause);
936
937 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
938 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
939 else
940 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
941 }
942
943 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
944 const struct ethtool_link_ksettings *cmd)
945 {
946 u32 speed = 0U;
947 u32 rate = 0U;
948 int err = 0;
949
950 if (cmd->base.autoneg == AUTONEG_ENABLE) {
951 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
952 self->aq_nic_cfg.is_autoneg = true;
953 } else {
954 speed = cmd->base.speed;
955
956 switch (speed) {
957 case SPEED_100:
958 rate = AQ_NIC_RATE_100M;
959 break;
960
961 case SPEED_1000:
962 rate = AQ_NIC_RATE_1G;
963 break;
964
965 case SPEED_2500:
966 rate = AQ_NIC_RATE_2GS;
967 break;
968
969 case SPEED_5000:
970 rate = AQ_NIC_RATE_5G;
971 break;
972
973 case SPEED_10000:
974 rate = AQ_NIC_RATE_10G;
975 break;
976
977 default:
978 err = -1;
979 goto err_exit;
980 break;
981 }
982 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
983 err = -1;
984 goto err_exit;
985 }
986
987 self->aq_nic_cfg.is_autoneg = false;
988 }
989
990 mutex_lock(&self->fwreq_mutex);
991 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
992 mutex_unlock(&self->fwreq_mutex);
993 if (err < 0)
994 goto err_exit;
995
996 self->aq_nic_cfg.link_speed_msk = rate;
997
998 err_exit:
999 return err;
1000 }
1001
1002 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
1003 {
1004 return &self->aq_nic_cfg;
1005 }
1006
1007 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
1008 {
1009 u32 fw_version = 0U;
1010
1011 self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
1012
1013 return fw_version;
1014 }
1015
1016 int aq_nic_set_loopback(struct aq_nic_s *self)
1017 {
1018 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1019
1020 if (!self->aq_hw_ops->hw_set_loopback ||
1021 !self->aq_fw_ops->set_phyloopback)
1022 return -ENOTSUPP;
1023
1024 mutex_lock(&self->fwreq_mutex);
1025 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1026 AQ_HW_LOOPBACK_DMA_SYS,
1027 !!(cfg->priv_flags &
1028 BIT(AQ_HW_LOOPBACK_DMA_SYS)));
1029
1030 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1031 AQ_HW_LOOPBACK_PKT_SYS,
1032 !!(cfg->priv_flags &
1033 BIT(AQ_HW_LOOPBACK_PKT_SYS)));
1034
1035 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1036 AQ_HW_LOOPBACK_DMA_NET,
1037 !!(cfg->priv_flags &
1038 BIT(AQ_HW_LOOPBACK_DMA_NET)));
1039
1040 self->aq_fw_ops->set_phyloopback(self->aq_hw,
1041 AQ_HW_LOOPBACK_PHYINT_SYS,
1042 !!(cfg->priv_flags &
1043 BIT(AQ_HW_LOOPBACK_PHYINT_SYS)));
1044
1045 self->aq_fw_ops->set_phyloopback(self->aq_hw,
1046 AQ_HW_LOOPBACK_PHYEXT_SYS,
1047 !!(cfg->priv_flags &
1048 BIT(AQ_HW_LOOPBACK_PHYEXT_SYS)));
1049 mutex_unlock(&self->fwreq_mutex);
1050
1051 return 0;
1052 }
1053
1054 int aq_nic_stop(struct aq_nic_s *self)
1055 {
1056 struct aq_vec_s *aq_vec = NULL;
1057 unsigned int i = 0U;
1058
1059 netif_tx_disable(self->ndev);
1060 netif_carrier_off(self->ndev);
1061
1062 del_timer_sync(&self->service_timer);
1063 cancel_work_sync(&self->service_task);
1064
1065 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
1066
1067 if (self->aq_nic_cfg.is_polling)
1068 del_timer_sync(&self->polling_timer);
1069 else
1070 aq_pci_func_free_irqs(self);
1071
1072 aq_ptp_irq_free(self);
1073
1074 for (i = 0U, aq_vec = self->aq_vec[0];
1075 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
1076 aq_vec_stop(aq_vec);
1077
1078 aq_ptp_ring_stop(self);
1079
1080 return self->aq_hw_ops->hw_stop(self->aq_hw);
1081 }
1082
1083 void aq_nic_set_power(struct aq_nic_s *self)
1084 {
1085 if (self->power_state != AQ_HW_POWER_STATE_D0 ||
1086 self->aq_hw->aq_nic_cfg->wol)
1087 if (likely(self->aq_fw_ops->set_power)) {
1088 mutex_lock(&self->fwreq_mutex);
1089 self->aq_fw_ops->set_power(self->aq_hw,
1090 self->power_state,
1091 self->ndev->dev_addr);
1092 mutex_unlock(&self->fwreq_mutex);
1093 }
1094 }
1095
1096 void aq_nic_deinit(struct aq_nic_s *self, bool link_down)
1097 {
1098 struct aq_vec_s *aq_vec = NULL;
1099 unsigned int i = 0U;
1100
1101 if (!self)
1102 goto err_exit;
1103
1104 for (i = 0U, aq_vec = self->aq_vec[0];
1105 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
1106 aq_vec_deinit(aq_vec);
1107
1108 aq_ptp_unregister(self);
1109 aq_ptp_ring_deinit(self);
1110 aq_ptp_ring_free(self);
1111 aq_ptp_free(self);
1112
1113 if (likely(self->aq_fw_ops->deinit) && link_down) {
1114 mutex_lock(&self->fwreq_mutex);
1115 self->aq_fw_ops->deinit(self->aq_hw);
1116 mutex_unlock(&self->fwreq_mutex);
1117 }
1118
1119 err_exit:;
1120 }
1121
1122 void aq_nic_free_vectors(struct aq_nic_s *self)
1123 {
1124 unsigned int i = 0U;
1125
1126 if (!self)
1127 goto err_exit;
1128
1129 for (i = ARRAY_SIZE(self->aq_vec); i--;) {
1130 if (self->aq_vec[i]) {
1131 aq_vec_free(self->aq_vec[i]);
1132 self->aq_vec[i] = NULL;
1133 }
1134 }
1135
1136 err_exit:;
1137 }
1138
1139 void aq_nic_shutdown(struct aq_nic_s *self)
1140 {
1141 int err = 0;
1142
1143 if (!self->ndev)
1144 return;
1145
1146 rtnl_lock();
1147
1148 netif_device_detach(self->ndev);
1149
1150 if (netif_running(self->ndev)) {
1151 err = aq_nic_stop(self);
1152 if (err < 0)
1153 goto err_exit;
1154 }
1155 aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol);
1156 aq_nic_set_power(self);
1157
1158 err_exit:
1159 rtnl_unlock();
1160 }
1161
1162 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type)
1163 {
1164 u8 location = 0xFF;
1165 u32 fltr_cnt;
1166 u32 n_bit;
1167
1168 switch (type) {
1169 case aq_rx_filter_ethertype:
1170 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT -
1171 self->aq_hw_rx_fltrs.fet_reserved_count;
1172 self->aq_hw_rx_fltrs.fet_reserved_count++;
1173 break;
1174 case aq_rx_filter_l3l4:
1175 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4;
1176 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count;
1177
1178 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit);
1179 self->aq_hw_rx_fltrs.fl3l4.reserved_count++;
1180 location = n_bit;
1181 break;
1182 default:
1183 break;
1184 }
1185
1186 return location;
1187 }
1188
1189 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
1190 u32 location)
1191 {
1192 switch (type) {
1193 case aq_rx_filter_ethertype:
1194 self->aq_hw_rx_fltrs.fet_reserved_count--;
1195 break;
1196 case aq_rx_filter_l3l4:
1197 self->aq_hw_rx_fltrs.fl3l4.reserved_count--;
1198 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location);
1199 break;
1200 default:
1201 break;
1202 }
1203 }
Linux with added FPC-III support