1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Atlantic Network Driver
3 *
4 * Copyright (C) 2014-2019 aQuantia Corporation
5 * Copyright (C) 2019-2020 Marvell International Ltd.
6 */
7
8 /* File aq_nic.c: Definition of common code for NIC. */
9
10 #include "aq_nic.h"
11 #include "aq_ring.h"
12 #include "aq_vec.h"
13 #include "aq_hw.h"
14 #include "aq_pci_func.h"
15 #include "aq_macsec.h"
16 #include "aq_main.h"
17 #include "aq_phy.h"
18 #include "aq_ptp.h"
19 #include "aq_filters.h"
20
21 #include <linux/moduleparam.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24 #include <linux/timer.h>
25 #include <linux/cpu.h>
26 #include <linux/ip.h>
27 #include <linux/tcp.h>
28 #include <net/ip.h>
29 #include <net/pkt_cls.h>
30
31 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
32 module_param_named(aq_itr, aq_itr, uint, 0644);
33 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
34
35 static unsigned int aq_itr_tx;
36 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
37 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
38
39 static unsigned int aq_itr_rx;
40 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
41 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
42
43 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
44
aq_nic_rss_init(struct aq_nic_s * self,unsigned int num_rss_queues)45 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
46 {
47 static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
48 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
49 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
50 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
51 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
52 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
53 };
54 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
55 struct aq_rss_parameters *rss_params;
56 int i = 0;
57
58 rss_params = &cfg->aq_rss;
59
60 rss_params->hash_secret_key_size = sizeof(rss_key);
61 memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
62 rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
63
64 for (i = rss_params->indirection_table_size; i--;)
65 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
66 }
67
68 /* Recalculate the number of vectors */
aq_nic_cfg_update_num_vecs(struct aq_nic_s * self)69 static void aq_nic_cfg_update_num_vecs(struct aq_nic_s *self)
70 {
71 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
72
73 cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
74 cfg->vecs = min(cfg->vecs, num_online_cpus());
75 if (self->irqvecs > AQ_HW_SERVICE_IRQS)
76 cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
77 /* cfg->vecs should be power of 2 for RSS */
78 cfg->vecs = rounddown_pow_of_two(cfg->vecs);
79
80 if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ANTIGUA)) {
81 if (cfg->tcs > 2)
82 cfg->vecs = min(cfg->vecs, 4U);
83 }
84
85 if (cfg->vecs <= 4)
86 cfg->tc_mode = AQ_TC_MODE_8TCS;
87 else
88 cfg->tc_mode = AQ_TC_MODE_4TCS;
89
90 /*rss rings */
91 cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
92 aq_nic_rss_init(self, cfg->num_rss_queues);
93 }
94
95 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
aq_nic_cfg_start(struct aq_nic_s * self)96 void aq_nic_cfg_start(struct aq_nic_s *self)
97 {
98 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
99 int i;
100
101 cfg->tcs = AQ_CFG_TCS_DEF;
102
103 cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
104
105 cfg->itr = aq_itr;
106 cfg->tx_itr = aq_itr_tx;
107 cfg->rx_itr = aq_itr_rx;
108
109 cfg->rxpageorder = AQ_CFG_RX_PAGEORDER;
110 cfg->is_rss = AQ_CFG_IS_RSS_DEF;
111 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
112 cfg->fc.req = AQ_CFG_FC_MODE;
113 cfg->wol = AQ_CFG_WOL_MODES;
114
115 cfg->mtu = AQ_CFG_MTU_DEF;
116 cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
117 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
118
119 cfg->is_lro = AQ_CFG_IS_LRO_DEF;
120 cfg->is_ptp = true;
121
122 /*descriptors */
123 cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
124 cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
125
126 aq_nic_cfg_update_num_vecs(self);
127
128 cfg->irq_type = aq_pci_func_get_irq_type(self);
129
130 if ((cfg->irq_type == AQ_HW_IRQ_INTX) ||
131 (cfg->aq_hw_caps->vecs == 1U) ||
132 (cfg->vecs == 1U)) {
133 cfg->is_rss = 0U;
134 cfg->vecs = 1U;
135 }
136
137 /* Check if we have enough vectors allocated for
138 * link status IRQ. If no - we'll know link state from
139 * slower service task.
140 */
141 if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs)
142 cfg->link_irq_vec = cfg->vecs;
143 else
144 cfg->link_irq_vec = 0;
145
146 cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
147 cfg->features = cfg->aq_hw_caps->hw_features;
148 cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
149 cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
150 cfg->is_vlan_force_promisc = true;
151
152 for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
153 cfg->prio_tc_map[i] = cfg->tcs * i / 8;
154 }
155
aq_nic_update_link_status(struct aq_nic_s * self)156 static int aq_nic_update_link_status(struct aq_nic_s *self)
157 {
158 int err = self->aq_fw_ops->update_link_status(self->aq_hw);
159 u32 fc = 0;
160
161 if (err)
162 return err;
163
164 if (self->aq_fw_ops->get_flow_control)
165 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
166 self->aq_nic_cfg.fc.cur = fc;
167
168 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
169 netdev_info(self->ndev, "%s: link change old %d new %d\n",
170 AQ_CFG_DRV_NAME, self->link_status.mbps,
171 self->aq_hw->aq_link_status.mbps);
172 aq_nic_update_interrupt_moderation_settings(self);
173
174 if (self->aq_ptp) {
175 aq_ptp_clock_init(self);
176 aq_ptp_tm_offset_set(self,
177 self->aq_hw->aq_link_status.mbps);
178 aq_ptp_link_change(self);
179 }
180
181 /* Driver has to update flow control settings on RX block
182 * on any link event.
183 * We should query FW whether it negotiated FC.
184 */
185 if (self->aq_hw_ops->hw_set_fc)
186 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
187 }
188
189 self->link_status = self->aq_hw->aq_link_status;
190 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
191 aq_utils_obj_set(&self->flags,
192 AQ_NIC_FLAG_STARTED);
193 aq_utils_obj_clear(&self->flags,
194 AQ_NIC_LINK_DOWN);
195 netif_carrier_on(self->ndev);
196 #if IS_ENABLED(CONFIG_MACSEC)
197 aq_macsec_enable(self);
198 #endif
199 if (self->aq_hw_ops->hw_tc_rate_limit_set)
200 self->aq_hw_ops->hw_tc_rate_limit_set(self->aq_hw);
201
202 netif_tx_wake_all_queues(self->ndev);
203 }
204 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
205 netif_carrier_off(self->ndev);
206 netif_tx_disable(self->ndev);
207 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
208 }
209
210 return 0;
211 }
212
aq_linkstate_threaded_isr(int irq,void * private)213 static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
214 {
215 struct aq_nic_s *self = private;
216
217 if (!self)
218 return IRQ_NONE;
219
220 aq_nic_update_link_status(self);
221
222 self->aq_hw_ops->hw_irq_enable(self->aq_hw,
223 BIT(self->aq_nic_cfg.link_irq_vec));
224
225 return IRQ_HANDLED;
226 }
227
aq_nic_service_task(struct work_struct * work)228 static void aq_nic_service_task(struct work_struct *work)
229 {
230 struct aq_nic_s *self = container_of(work, struct aq_nic_s,
231 service_task);
232 int err;
233
234 aq_ptp_service_task(self);
235
236 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
237 return;
238
239 err = aq_nic_update_link_status(self);
240 if (err)
241 return;
242
243 #if IS_ENABLED(CONFIG_MACSEC)
244 aq_macsec_work(self);
245 #endif
246
247 mutex_lock(&self->fwreq_mutex);
248 if (self->aq_fw_ops->update_stats)
249 self->aq_fw_ops->update_stats(self->aq_hw);
250 mutex_unlock(&self->fwreq_mutex);
251
252 aq_nic_update_ndev_stats(self);
253 }
254
aq_nic_service_timer_cb(struct timer_list * t)255 static void aq_nic_service_timer_cb(struct timer_list *t)
256 {
257 struct aq_nic_s *self = from_timer(self, t, service_timer);
258
259 mod_timer(&self->service_timer,
260 jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
261
262 aq_ndev_schedule_work(&self->service_task);
263 }
264
aq_nic_polling_timer_cb(struct timer_list * t)265 static void aq_nic_polling_timer_cb(struct timer_list *t)
266 {
267 struct aq_nic_s *self = from_timer(self, t, polling_timer);
268 unsigned int i = 0U;
269
270 for (i = 0U; self->aq_vecs > i; ++i)
271 aq_vec_isr(i, (void *)self->aq_vec[i]);
272
273 mod_timer(&self->polling_timer, jiffies +
274 AQ_CFG_POLLING_TIMER_INTERVAL);
275 }
276
aq_nic_hw_prepare(struct aq_nic_s * self)277 static int aq_nic_hw_prepare(struct aq_nic_s *self)
278 {
279 int err = 0;
280
281 err = self->aq_hw_ops->hw_soft_reset(self->aq_hw);
282 if (err)
283 goto exit;
284
285 err = self->aq_hw_ops->hw_prepare(self->aq_hw, &self->aq_fw_ops);
286
287 exit:
288 return err;
289 }
290
aq_nic_is_valid_ether_addr(const u8 * addr)291 static bool aq_nic_is_valid_ether_addr(const u8 *addr)
292 {
293 /* Some engineering samples of Aquantia NICs are provisioned with a
294 * partially populated MAC, which is still invalid.
295 */
296 return !(addr[0] == 0 && addr[1] == 0 && addr[2] == 0);
297 }
298
aq_nic_ndev_register(struct aq_nic_s * self)299 int aq_nic_ndev_register(struct aq_nic_s *self)
300 {
301 u8 addr[ETH_ALEN];
302 int err = 0;
303
304 if (!self->ndev) {
305 err = -EINVAL;
306 goto err_exit;
307 }
308
309 err = aq_nic_hw_prepare(self);
310 if (err)
311 goto err_exit;
312
313 #if IS_ENABLED(CONFIG_MACSEC)
314 aq_macsec_init(self);
315 #endif
316
317 if (platform_get_ethdev_address(&self->pdev->dev, self->ndev) != 0) {
318 // If DT has none or an invalid one, ask device for MAC address
319 mutex_lock(&self->fwreq_mutex);
320 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, addr);
321 mutex_unlock(&self->fwreq_mutex);
322
323 if (err)
324 goto err_exit;
325
326 if (is_valid_ether_addr(addr) &&
327 aq_nic_is_valid_ether_addr(addr)) {
328 eth_hw_addr_set(self->ndev, addr);
329 } else {
330 netdev_warn(self->ndev, "MAC is invalid, will use random.");
331 eth_hw_addr_random(self->ndev);
332 }
333 }
334
335 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
336 {
337 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
338
339 eth_hw_addr_set(self->ndev, mac_addr_permanent);
340 }
341 #endif
342
343 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
344 self->aq_vecs++) {
345 self->aq_vec[self->aq_vecs] =
346 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
347 if (!self->aq_vec[self->aq_vecs]) {
348 err = -ENOMEM;
349 goto err_exit;
350 }
351 }
352
353 netif_carrier_off(self->ndev);
354
355 netif_tx_disable(self->ndev);
356
357 err = register_netdev(self->ndev);
358 if (err)
359 goto err_exit;
360
361 err_exit:
362 #if IS_ENABLED(CONFIG_MACSEC)
363 if (err)
364 aq_macsec_free(self);
365 #endif
366 return err;
367 }
368
aq_nic_ndev_init(struct aq_nic_s * self)369 void aq_nic_ndev_init(struct aq_nic_s *self)
370 {
371 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
372 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
373
374 self->ndev->hw_features |= aq_hw_caps->hw_features;
375 self->ndev->features = aq_hw_caps->hw_features;
376 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
377 NETIF_F_RXHASH | NETIF_F_SG |
378 NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6;
379 self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
380 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
381 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
382
383 self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK;
384 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
385 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
386
387 self->ndev->xdp_features = NETDEV_XDP_ACT_BASIC |
388 NETDEV_XDP_ACT_REDIRECT |
389 NETDEV_XDP_ACT_NDO_XMIT |
390 NETDEV_XDP_ACT_RX_SG |
391 NETDEV_XDP_ACT_NDO_XMIT_SG;
392 }
393
aq_nic_set_tx_ring(struct aq_nic_s * self,unsigned int idx,struct aq_ring_s * ring)394 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
395 struct aq_ring_s *ring)
396 {
397 self->aq_ring_tx[idx] = ring;
398 }
399
aq_nic_get_ndev(struct aq_nic_s * self)400 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
401 {
402 return self->ndev;
403 }
404
aq_nic_init(struct aq_nic_s * self)405 int aq_nic_init(struct aq_nic_s *self)
406 {
407 struct aq_vec_s *aq_vec = NULL;
408 unsigned int i = 0U;
409 int err = 0;
410
411 self->power_state = AQ_HW_POWER_STATE_D0;
412 mutex_lock(&self->fwreq_mutex);
413 err = self->aq_hw_ops->hw_reset(self->aq_hw);
414 mutex_unlock(&self->fwreq_mutex);
415 if (err < 0)
416 goto err_exit;
417 /* Restore default settings */
418 aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter);
419 aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ?
420 AQ_HW_MEDIA_DETECT_CNT : 0);
421
422 err = self->aq_hw_ops->hw_init(self->aq_hw,
423 aq_nic_get_ndev(self)->dev_addr);
424 if (err < 0)
425 goto err_exit;
426
427 if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ATLANTIC) &&
428 self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
429 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
430 err = aq_phy_init(self->aq_hw);
431
432 /* Disable the PTP on NICs where it's known to cause datapath
433 * problems.
434 * Ideally this should have been done by PHY provisioning, but
435 * many units have been shipped with enabled PTP block already.
436 */
437 if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP)
438 if (self->aq_hw->phy_id != HW_ATL_PHY_ID_MAX)
439 aq_phy_disable_ptp(self->aq_hw);
440 }
441
442 for (i = 0U; i < self->aq_vecs; i++) {
443 aq_vec = self->aq_vec[i];
444 err = aq_vec_ring_alloc(aq_vec, self, i,
445 aq_nic_get_cfg(self));
446 if (err)
447 goto err_exit;
448
449 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
450 }
451
452 if (aq_nic_get_cfg(self)->is_ptp) {
453 err = aq_ptp_init(self, self->irqvecs - 1);
454 if (err < 0)
455 goto err_exit;
456
457 err = aq_ptp_ring_alloc(self);
458 if (err < 0)
459 goto err_exit;
460
461 err = aq_ptp_ring_init(self);
462 if (err < 0)
463 goto err_exit;
464 }
465
466 netif_carrier_off(self->ndev);
467
468 err_exit:
469 return err;
470 }
471
aq_nic_start(struct aq_nic_s * self)472 int aq_nic_start(struct aq_nic_s *self)
473 {
474 struct aq_vec_s *aq_vec = NULL;
475 struct aq_nic_cfg_s *cfg;
476 unsigned int i = 0U;
477 int err = 0;
478
479 cfg = aq_nic_get_cfg(self);
480
481 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
482 self->mc_list.ar,
483 self->mc_list.count);
484 if (err < 0)
485 goto err_exit;
486
487 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
488 self->packet_filter);
489 if (err < 0)
490 goto err_exit;
491
492 for (i = 0U; self->aq_vecs > i; ++i) {
493 aq_vec = self->aq_vec[i];
494 err = aq_vec_start(aq_vec);
495 if (err < 0)
496 goto err_exit;
497 }
498
499 err = aq_ptp_ring_start(self);
500 if (err < 0)
501 goto err_exit;
502
503 aq_nic_set_loopback(self);
504
505 err = self->aq_hw_ops->hw_start(self->aq_hw);
506 if (err < 0)
507 goto err_exit;
508
509 err = aq_nic_update_interrupt_moderation_settings(self);
510 if (err)
511 goto err_exit;
512
513 INIT_WORK(&self->service_task, aq_nic_service_task);
514
515 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
516 aq_nic_service_timer_cb(&self->service_timer);
517
518 if (cfg->is_polling) {
519 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
520 mod_timer(&self->polling_timer, jiffies +
521 AQ_CFG_POLLING_TIMER_INTERVAL);
522 } else {
523 for (i = 0U; self->aq_vecs > i; ++i) {
524 aq_vec = self->aq_vec[i];
525 err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
526 aq_vec_isr, aq_vec,
527 aq_vec_get_affinity_mask(aq_vec));
528 if (err < 0)
529 goto err_exit;
530 }
531
532 err = aq_ptp_irq_alloc(self);
533 if (err < 0)
534 goto err_exit;
535
536 if (cfg->link_irq_vec) {
537 int irqvec = pci_irq_vector(self->pdev,
538 cfg->link_irq_vec);
539 err = request_threaded_irq(irqvec, NULL,
540 aq_linkstate_threaded_isr,
541 IRQF_SHARED | IRQF_ONESHOT,
542 self->ndev->name, self);
543 if (err < 0)
544 goto err_exit;
545 self->msix_entry_mask |= (1 << cfg->link_irq_vec);
546 }
547
548 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
549 AQ_CFG_IRQ_MASK);
550 if (err < 0)
551 goto err_exit;
552 }
553
554 err = netif_set_real_num_tx_queues(self->ndev,
555 self->aq_vecs * cfg->tcs);
556 if (err < 0)
557 goto err_exit;
558
559 err = netif_set_real_num_rx_queues(self->ndev,
560 self->aq_vecs * cfg->tcs);
561 if (err < 0)
562 goto err_exit;
563
564 for (i = 0; i < cfg->tcs; i++) {
565 u16 offset = self->aq_vecs * i;
566
567 netdev_set_tc_queue(self->ndev, i, self->aq_vecs, offset);
568 }
569 netif_tx_start_all_queues(self->ndev);
570
571 err_exit:
572 return err;
573 }
574
aq_nic_map_xdp(struct aq_nic_s * self,struct xdp_frame * xdpf,struct aq_ring_s * ring)575 static unsigned int aq_nic_map_xdp(struct aq_nic_s *self,
576 struct xdp_frame *xdpf,
577 struct aq_ring_s *ring)
578 {
579 struct device *dev = aq_nic_get_dev(self);
580 struct aq_ring_buff_s *first = NULL;
581 unsigned int dx = ring->sw_tail;
582 struct aq_ring_buff_s *dx_buff;
583 struct skb_shared_info *sinfo;
584 unsigned int frag_count = 0U;
585 unsigned int nr_frags = 0U;
586 unsigned int ret = 0U;
587 u16 total_len;
588
589 dx_buff = &ring->buff_ring[dx];
590 dx_buff->flags = 0U;
591
592 sinfo = xdp_get_shared_info_from_frame(xdpf);
593 total_len = xdpf->len;
594 dx_buff->len = total_len;
595 if (xdp_frame_has_frags(xdpf)) {
596 nr_frags = sinfo->nr_frags;
597 total_len += sinfo->xdp_frags_size;
598 }
599 dx_buff->pa = dma_map_single(dev, xdpf->data, dx_buff->len,
600 DMA_TO_DEVICE);
601
602 if (unlikely(dma_mapping_error(dev, dx_buff->pa)))
603 goto exit;
604
605 first = dx_buff;
606 dx_buff->len_pkt = total_len;
607 dx_buff->is_sop = 1U;
608 dx_buff->is_mapped = 1U;
609 ++ret;
610
611 for (; nr_frags--; ++frag_count) {
612 skb_frag_t *frag = &sinfo->frags[frag_count];
613 unsigned int frag_len = skb_frag_size(frag);
614 unsigned int buff_offset = 0U;
615 unsigned int buff_size = 0U;
616 dma_addr_t frag_pa;
617
618 while (frag_len) {
619 if (frag_len > AQ_CFG_TX_FRAME_MAX)
620 buff_size = AQ_CFG_TX_FRAME_MAX;
621 else
622 buff_size = frag_len;
623
624 frag_pa = skb_frag_dma_map(dev, frag, buff_offset,
625 buff_size, DMA_TO_DEVICE);
626
627 if (unlikely(dma_mapping_error(dev, frag_pa)))
628 goto mapping_error;
629
630 dx = aq_ring_next_dx(ring, dx);
631 dx_buff = &ring->buff_ring[dx];
632
633 dx_buff->flags = 0U;
634 dx_buff->len = buff_size;
635 dx_buff->pa = frag_pa;
636 dx_buff->is_mapped = 1U;
637 dx_buff->eop_index = 0xffffU;
638
639 frag_len -= buff_size;
640 buff_offset += buff_size;
641
642 ++ret;
643 }
644 }
645
646 first->eop_index = dx;
647 dx_buff->is_eop = 1U;
648 dx_buff->skb = NULL;
649 dx_buff->xdpf = xdpf;
650 goto exit;
651
652 mapping_error:
653 for (dx = ring->sw_tail;
654 ret > 0;
655 --ret, dx = aq_ring_next_dx(ring, dx)) {
656 dx_buff = &ring->buff_ring[dx];
657
658 if (!dx_buff->pa)
659 continue;
660 if (unlikely(dx_buff->is_sop))
661 dma_unmap_single(dev, dx_buff->pa, dx_buff->len,
662 DMA_TO_DEVICE);
663 else
664 dma_unmap_page(dev, dx_buff->pa, dx_buff->len,
665 DMA_TO_DEVICE);
666 }
667
668 exit:
669 return ret;
670 }
671
aq_nic_map_skb(struct aq_nic_s * self,struct sk_buff * skb,struct aq_ring_s * ring)672 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
673 struct aq_ring_s *ring)
674 {
675 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
676 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
677 struct device *dev = aq_nic_get_dev(self);
678 struct aq_ring_buff_s *first = NULL;
679 u8 ipver = ip_hdr(skb)->version;
680 struct aq_ring_buff_s *dx_buff;
681 bool need_context_tag = false;
682 unsigned int frag_count = 0U;
683 unsigned int ret = 0U;
684 unsigned int dx;
685 u8 l4proto = 0;
686
687 if (ipver == 4)
688 l4proto = ip_hdr(skb)->protocol;
689 else if (ipver == 6)
690 l4proto = ipv6_hdr(skb)->nexthdr;
691
692 dx = ring->sw_tail;
693 dx_buff = &ring->buff_ring[dx];
694 dx_buff->flags = 0U;
695
696 if (unlikely(skb_is_gso(skb))) {
697 dx_buff->mss = skb_shinfo(skb)->gso_size;
698 if (l4proto == IPPROTO_TCP) {
699 dx_buff->is_gso_tcp = 1U;
700 dx_buff->len_l4 = tcp_hdrlen(skb);
701 } else if (l4proto == IPPROTO_UDP) {
702 dx_buff->is_gso_udp = 1U;
703 dx_buff->len_l4 = sizeof(struct udphdr);
704 /* UDP GSO Hardware does not replace packet length. */
705 udp_hdr(skb)->len = htons(dx_buff->mss +
706 dx_buff->len_l4);
707 } else {
708 WARN_ONCE(true, "Bad GSO mode");
709 goto exit;
710 }
711 dx_buff->len_pkt = skb->len;
712 dx_buff->len_l2 = ETH_HLEN;
713 dx_buff->len_l3 = skb_network_header_len(skb);
714 dx_buff->eop_index = 0xffffU;
715 dx_buff->is_ipv6 = (ipver == 6);
716 need_context_tag = true;
717 }
718
719 if (cfg->is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
720 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
721 dx_buff->len_pkt = skb->len;
722 dx_buff->is_vlan = 1U;
723 need_context_tag = true;
724 }
725
726 if (need_context_tag) {
727 dx = aq_ring_next_dx(ring, dx);
728 dx_buff = &ring->buff_ring[dx];
729 dx_buff->flags = 0U;
730 ++ret;
731 }
732
733 dx_buff->len = skb_headlen(skb);
734 dx_buff->pa = dma_map_single(dev,
735 skb->data,
736 dx_buff->len,
737 DMA_TO_DEVICE);
738
739 if (unlikely(dma_mapping_error(dev, dx_buff->pa))) {
740 ret = 0;
741 goto exit;
742 }
743
744 first = dx_buff;
745 dx_buff->len_pkt = skb->len;
746 dx_buff->is_sop = 1U;
747 dx_buff->is_mapped = 1U;
748 ++ret;
749
750 if (skb->ip_summed == CHECKSUM_PARTIAL) {
751 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
752 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
753 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
754 }
755
756 for (; nr_frags--; ++frag_count) {
757 unsigned int frag_len = 0U;
758 unsigned int buff_offset = 0U;
759 unsigned int buff_size = 0U;
760 dma_addr_t frag_pa;
761 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
762
763 frag_len = skb_frag_size(frag);
764
765 while (frag_len) {
766 if (frag_len > AQ_CFG_TX_FRAME_MAX)
767 buff_size = AQ_CFG_TX_FRAME_MAX;
768 else
769 buff_size = frag_len;
770
771 frag_pa = skb_frag_dma_map(dev,
772 frag,
773 buff_offset,
774 buff_size,
775 DMA_TO_DEVICE);
776
777 if (unlikely(dma_mapping_error(dev,
778 frag_pa)))
779 goto mapping_error;
780
781 dx = aq_ring_next_dx(ring, dx);
782 dx_buff = &ring->buff_ring[dx];
783
784 dx_buff->flags = 0U;
785 dx_buff->len = buff_size;
786 dx_buff->pa = frag_pa;
787 dx_buff->is_mapped = 1U;
788 dx_buff->eop_index = 0xffffU;
789
790 frag_len -= buff_size;
791 buff_offset += buff_size;
792
793 ++ret;
794 }
795 }
796
797 first->eop_index = dx;
798 dx_buff->is_eop = 1U;
799 dx_buff->skb = skb;
800 dx_buff->xdpf = NULL;
801 goto exit;
802
803 mapping_error:
804 for (dx = ring->sw_tail;
805 ret > 0;
806 --ret, dx = aq_ring_next_dx(ring, dx)) {
807 dx_buff = &ring->buff_ring[dx];
808
809 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
810 !dx_buff->is_vlan && dx_buff->pa) {
811 if (unlikely(dx_buff->is_sop)) {
812 dma_unmap_single(dev,
813 dx_buff->pa,
814 dx_buff->len,
815 DMA_TO_DEVICE);
816 } else {
817 dma_unmap_page(dev,
818 dx_buff->pa,
819 dx_buff->len,
820 DMA_TO_DEVICE);
821 }
822 }
823 }
824
825 exit:
826 return ret;
827 }
828
aq_nic_xmit_xdpf(struct aq_nic_s * aq_nic,struct aq_ring_s * tx_ring,struct xdp_frame * xdpf)829 int aq_nic_xmit_xdpf(struct aq_nic_s *aq_nic, struct aq_ring_s *tx_ring,
830 struct xdp_frame *xdpf)
831 {
832 u16 queue_index = AQ_NIC_RING2QMAP(aq_nic, tx_ring->idx);
833 struct net_device *ndev = aq_nic_get_ndev(aq_nic);
834 struct skb_shared_info *sinfo;
835 int cpu = smp_processor_id();
836 int err = NETDEV_TX_BUSY;
837 struct netdev_queue *nq;
838 unsigned int frags = 1;
839
840 if (xdp_frame_has_frags(xdpf)) {
841 sinfo = xdp_get_shared_info_from_frame(xdpf);
842 frags += sinfo->nr_frags;
843 }
844
845 if (frags > AQ_CFG_SKB_FRAGS_MAX)
846 return err;
847
848 nq = netdev_get_tx_queue(ndev, tx_ring->idx);
849 __netif_tx_lock(nq, cpu);
850
851 aq_ring_update_queue_state(tx_ring);
852
853 /* Above status update may stop the queue. Check this. */
854 if (__netif_subqueue_stopped(aq_nic_get_ndev(aq_nic), queue_index))
855 goto out;
856
857 frags = aq_nic_map_xdp(aq_nic, xdpf, tx_ring);
858 if (likely(frags))
859 err = aq_nic->aq_hw_ops->hw_ring_tx_xmit(aq_nic->aq_hw, tx_ring,
860 frags);
861 out:
862 __netif_tx_unlock(nq);
863
864 return err;
865 }
866
aq_nic_xmit(struct aq_nic_s * self,struct sk_buff * skb)867 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
868 {
869 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
870 unsigned int vec = skb->queue_mapping % cfg->vecs;
871 unsigned int tc = skb->queue_mapping / cfg->vecs;
872 struct aq_ring_s *ring = NULL;
873 unsigned int frags = 0U;
874 int err = NETDEV_TX_OK;
875
876 frags = skb_shinfo(skb)->nr_frags + 1;
877
878 ring = self->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(cfg, tc, vec)];
879
880 if (frags > AQ_CFG_SKB_FRAGS_MAX) {
881 dev_kfree_skb_any(skb);
882 goto err_exit;
883 }
884
885 aq_ring_update_queue_state(ring);
886
887 if (cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
888 err = NETDEV_TX_BUSY;
889 goto err_exit;
890 }
891
892 /* Above status update may stop the queue. Check this. */
893 if (__netif_subqueue_stopped(self->ndev,
894 AQ_NIC_RING2QMAP(self, ring->idx))) {
895 err = NETDEV_TX_BUSY;
896 goto err_exit;
897 }
898
899 frags = aq_nic_map_skb(self, skb, ring);
900
901 if (likely(frags)) {
902 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
903 ring, frags);
904 } else {
905 err = NETDEV_TX_BUSY;
906 }
907
908 err_exit:
909 return err;
910 }
911
aq_nic_update_interrupt_moderation_settings(struct aq_nic_s * self)912 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
913 {
914 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
915 }
916
aq_nic_set_packet_filter(struct aq_nic_s * self,unsigned int flags)917 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
918 {
919 int err = 0;
920
921 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
922 if (err < 0)
923 goto err_exit;
924
925 self->packet_filter = flags;
926
927 err_exit:
928 return err;
929 }
930
aq_nic_set_multicast_list(struct aq_nic_s * self,struct net_device * ndev)931 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
932 {
933 const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
934 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
935 unsigned int packet_filter = ndev->flags;
936 struct netdev_hw_addr *ha = NULL;
937 unsigned int i = 0U;
938 int err = 0;
939
940 self->mc_list.count = 0;
941 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
942 packet_filter |= IFF_PROMISC;
943 } else {
944 netdev_for_each_uc_addr(ha, ndev) {
945 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
946 }
947 }
948
949 cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
950 if (cfg->is_mc_list_enabled) {
951 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
952 packet_filter |= IFF_ALLMULTI;
953 } else {
954 netdev_for_each_mc_addr(ha, ndev) {
955 ether_addr_copy(self->mc_list.ar[i++],
956 ha->addr);
957 }
958 }
959 }
960
961 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
962 self->mc_list.count = i;
963 err = hw_ops->hw_multicast_list_set(self->aq_hw,
964 self->mc_list.ar,
965 self->mc_list.count);
966 if (err < 0)
967 return err;
968 }
969
970 return aq_nic_set_packet_filter(self, packet_filter);
971 }
972
aq_nic_set_mtu(struct aq_nic_s * self,int new_mtu)973 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
974 {
975 self->aq_nic_cfg.mtu = new_mtu;
976
977 return 0;
978 }
979
aq_nic_set_mac(struct aq_nic_s * self,struct net_device * ndev)980 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
981 {
982 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
983 }
984
aq_nic_get_link_speed(struct aq_nic_s * self)985 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
986 {
987 return self->link_status.mbps;
988 }
989
aq_nic_get_regs(struct aq_nic_s * self,struct ethtool_regs * regs,void * p)990 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
991 {
992 u32 *regs_buff = p;
993 int err = 0;
994
995 if (unlikely(!self->aq_hw_ops->hw_get_regs))
996 return -EOPNOTSUPP;
997
998 regs->version = 1;
999
1000 err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
1001 self->aq_nic_cfg.aq_hw_caps,
1002 regs_buff);
1003 if (err < 0)
1004 goto err_exit;
1005
1006 err_exit:
1007 return err;
1008 }
1009
aq_nic_get_regs_count(struct aq_nic_s * self)1010 int aq_nic_get_regs_count(struct aq_nic_s *self)
1011 {
1012 if (unlikely(!self->aq_hw_ops->hw_get_regs))
1013 return 0;
1014
1015 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
1016 }
1017
aq_nic_get_stats(struct aq_nic_s * self,u64 * data)1018 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
1019 {
1020 struct aq_stats_s *stats;
1021 unsigned int count = 0U;
1022 unsigned int i = 0U;
1023 unsigned int tc;
1024
1025 if (self->aq_fw_ops->update_stats) {
1026 mutex_lock(&self->fwreq_mutex);
1027 self->aq_fw_ops->update_stats(self->aq_hw);
1028 mutex_unlock(&self->fwreq_mutex);
1029 }
1030 stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
1031
1032 if (!stats)
1033 goto err_exit;
1034
1035 data[i] = stats->uprc + stats->mprc + stats->bprc;
1036 data[++i] = stats->uprc;
1037 data[++i] = stats->mprc;
1038 data[++i] = stats->bprc;
1039 data[++i] = stats->erpt;
1040 data[++i] = stats->uptc + stats->mptc + stats->bptc;
1041 data[++i] = stats->uptc;
1042 data[++i] = stats->mptc;
1043 data[++i] = stats->bptc;
1044 data[++i] = stats->ubrc;
1045 data[++i] = stats->ubtc;
1046 data[++i] = stats->mbrc;
1047 data[++i] = stats->mbtc;
1048 data[++i] = stats->bbrc;
1049 data[++i] = stats->bbtc;
1050 if (stats->brc)
1051 data[++i] = stats->brc;
1052 else
1053 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
1054 if (stats->btc)
1055 data[++i] = stats->btc;
1056 else
1057 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
1058 data[++i] = stats->dma_pkt_rc;
1059 data[++i] = stats->dma_pkt_tc;
1060 data[++i] = stats->dma_oct_rc;
1061 data[++i] = stats->dma_oct_tc;
1062 data[++i] = stats->dpc;
1063
1064 i++;
1065
1066 data += i;
1067
1068 for (tc = 0U; tc < self->aq_nic_cfg.tcs; tc++) {
1069 for (i = 0U; self->aq_vecs > i; ++i) {
1070 if (!self->aq_vec[i])
1071 break;
1072 data += count;
1073 count = aq_vec_get_sw_stats(self->aq_vec[i], tc, data);
1074 }
1075 }
1076
1077 data += count;
1078
1079 err_exit:
1080 return data;
1081 }
1082
aq_nic_update_ndev_stats(struct aq_nic_s * self)1083 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
1084 {
1085 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
1086 struct net_device *ndev = self->ndev;
1087
1088 ndev->stats.rx_packets = stats->dma_pkt_rc;
1089 ndev->stats.rx_bytes = stats->dma_oct_rc;
1090 ndev->stats.rx_errors = stats->erpr;
1091 ndev->stats.rx_dropped = stats->dpc;
1092 ndev->stats.tx_packets = stats->dma_pkt_tc;
1093 ndev->stats.tx_bytes = stats->dma_oct_tc;
1094 ndev->stats.tx_errors = stats->erpt;
1095 ndev->stats.multicast = stats->mprc;
1096 }
1097
aq_nic_get_link_ksettings(struct aq_nic_s * self,struct ethtool_link_ksettings * cmd)1098 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
1099 struct ethtool_link_ksettings *cmd)
1100 {
1101 u32 lp_link_speed_msk;
1102
1103 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1104 cmd->base.port = PORT_FIBRE;
1105 else
1106 cmd->base.port = PORT_TP;
1107
1108 cmd->base.duplex = DUPLEX_UNKNOWN;
1109 if (self->link_status.mbps)
1110 cmd->base.duplex = self->link_status.full_duplex ?
1111 DUPLEX_FULL : DUPLEX_HALF;
1112 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
1113
1114 ethtool_link_ksettings_zero_link_mode(cmd, supported);
1115
1116 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
1117 ethtool_link_ksettings_add_link_mode(cmd, supported,
1118 10000baseT_Full);
1119
1120 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
1121 ethtool_link_ksettings_add_link_mode(cmd, supported,
1122 5000baseT_Full);
1123
1124 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2G5)
1125 ethtool_link_ksettings_add_link_mode(cmd, supported,
1126 2500baseT_Full);
1127
1128 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
1129 ethtool_link_ksettings_add_link_mode(cmd, supported,
1130 1000baseT_Full);
1131
1132 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G_HALF)
1133 ethtool_link_ksettings_add_link_mode(cmd, supported,
1134 1000baseT_Half);
1135
1136 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
1137 ethtool_link_ksettings_add_link_mode(cmd, supported,
1138 100baseT_Full);
1139
1140 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M_HALF)
1141 ethtool_link_ksettings_add_link_mode(cmd, supported,
1142 100baseT_Half);
1143
1144 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M)
1145 ethtool_link_ksettings_add_link_mode(cmd, supported,
1146 10baseT_Full);
1147
1148 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M_HALF)
1149 ethtool_link_ksettings_add_link_mode(cmd, supported,
1150 10baseT_Half);
1151
1152 if (self->aq_nic_cfg.aq_hw_caps->flow_control) {
1153 ethtool_link_ksettings_add_link_mode(cmd, supported,
1154 Pause);
1155 ethtool_link_ksettings_add_link_mode(cmd, supported,
1156 Asym_Pause);
1157 }
1158
1159 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
1160
1161 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1162 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
1163 else
1164 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
1165
1166 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
1167
1168 if (self->aq_nic_cfg.is_autoneg)
1169 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
1170
1171 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
1172 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1173 10000baseT_Full);
1174
1175 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
1176 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1177 5000baseT_Full);
1178
1179 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2G5)
1180 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1181 2500baseT_Full);
1182
1183 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
1184 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1185 1000baseT_Full);
1186
1187 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G_HALF)
1188 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1189 1000baseT_Half);
1190
1191 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
1192 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1193 100baseT_Full);
1194
1195 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M_HALF)
1196 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1197 100baseT_Half);
1198
1199 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M)
1200 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1201 10baseT_Full);
1202
1203 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M_HALF)
1204 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1205 10baseT_Half);
1206
1207 if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)
1208 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1209 Pause);
1210
1211 /* Asym is when either RX or TX, but not both */
1212 if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^
1213 !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX))
1214 ethtool_link_ksettings_add_link_mode(cmd, advertising,
1215 Asym_Pause);
1216
1217 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
1218 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
1219 else
1220 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
1221
1222 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
1223 lp_link_speed_msk = self->aq_hw->aq_link_status.lp_link_speed_msk;
1224
1225 if (lp_link_speed_msk & AQ_NIC_RATE_10G)
1226 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1227 10000baseT_Full);
1228
1229 if (lp_link_speed_msk & AQ_NIC_RATE_5G)
1230 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1231 5000baseT_Full);
1232
1233 if (lp_link_speed_msk & AQ_NIC_RATE_2G5)
1234 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1235 2500baseT_Full);
1236
1237 if (lp_link_speed_msk & AQ_NIC_RATE_1G)
1238 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1239 1000baseT_Full);
1240
1241 if (lp_link_speed_msk & AQ_NIC_RATE_1G_HALF)
1242 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1243 1000baseT_Half);
1244
1245 if (lp_link_speed_msk & AQ_NIC_RATE_100M)
1246 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1247 100baseT_Full);
1248
1249 if (lp_link_speed_msk & AQ_NIC_RATE_100M_HALF)
1250 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1251 100baseT_Half);
1252
1253 if (lp_link_speed_msk & AQ_NIC_RATE_10M)
1254 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1255 10baseT_Full);
1256
1257 if (lp_link_speed_msk & AQ_NIC_RATE_10M_HALF)
1258 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1259 10baseT_Half);
1260
1261 if (self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX)
1262 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1263 Pause);
1264 if (!!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_TX) ^
1265 !!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX))
1266 ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
1267 Asym_Pause);
1268 }
1269
aq_nic_set_link_ksettings(struct aq_nic_s * self,const struct ethtool_link_ksettings * cmd)1270 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
1271 const struct ethtool_link_ksettings *cmd)
1272 {
1273 int fduplex = (cmd->base.duplex == DUPLEX_FULL);
1274 u32 speed = cmd->base.speed;
1275 u32 rate = 0U;
1276 int err = 0;
1277
1278 if (!fduplex && speed > SPEED_1000) {
1279 err = -EINVAL;
1280 goto err_exit;
1281 }
1282
1283 if (cmd->base.autoneg == AUTONEG_ENABLE) {
1284 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
1285 self->aq_nic_cfg.is_autoneg = true;
1286 } else {
1287 switch (speed) {
1288 case SPEED_10:
1289 rate = fduplex ? AQ_NIC_RATE_10M : AQ_NIC_RATE_10M_HALF;
1290 break;
1291
1292 case SPEED_100:
1293 rate = fduplex ? AQ_NIC_RATE_100M
1294 : AQ_NIC_RATE_100M_HALF;
1295 break;
1296
1297 case SPEED_1000:
1298 rate = fduplex ? AQ_NIC_RATE_1G : AQ_NIC_RATE_1G_HALF;
1299 break;
1300
1301 case SPEED_2500:
1302 rate = AQ_NIC_RATE_2G5;
1303 break;
1304
1305 case SPEED_5000:
1306 rate = AQ_NIC_RATE_5G;
1307 break;
1308
1309 case SPEED_10000:
1310 rate = AQ_NIC_RATE_10G;
1311 break;
1312
1313 default:
1314 err = -1;
1315 goto err_exit;
1316 }
1317 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
1318 err = -1;
1319 goto err_exit;
1320 }
1321
1322 self->aq_nic_cfg.is_autoneg = false;
1323 }
1324
1325 mutex_lock(&self->fwreq_mutex);
1326 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
1327 mutex_unlock(&self->fwreq_mutex);
1328 if (err < 0)
1329 goto err_exit;
1330
1331 self->aq_nic_cfg.link_speed_msk = rate;
1332
1333 err_exit:
1334 return err;
1335 }
1336
aq_nic_get_cfg(struct aq_nic_s * self)1337 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
1338 {
1339 return &self->aq_nic_cfg;
1340 }
1341
aq_nic_get_fw_version(struct aq_nic_s * self)1342 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
1343 {
1344 return self->aq_hw_ops->hw_get_fw_version(self->aq_hw);
1345 }
1346
aq_nic_set_loopback(struct aq_nic_s * self)1347 int aq_nic_set_loopback(struct aq_nic_s *self)
1348 {
1349 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1350
1351 if (!self->aq_hw_ops->hw_set_loopback ||
1352 !self->aq_fw_ops->set_phyloopback)
1353 return -EOPNOTSUPP;
1354
1355 mutex_lock(&self->fwreq_mutex);
1356 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1357 AQ_HW_LOOPBACK_DMA_SYS,
1358 !!(cfg->priv_flags &
1359 BIT(AQ_HW_LOOPBACK_DMA_SYS)));
1360
1361 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1362 AQ_HW_LOOPBACK_PKT_SYS,
1363 !!(cfg->priv_flags &
1364 BIT(AQ_HW_LOOPBACK_PKT_SYS)));
1365
1366 self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1367 AQ_HW_LOOPBACK_DMA_NET,
1368 !!(cfg->priv_flags &
1369 BIT(AQ_HW_LOOPBACK_DMA_NET)));
1370
1371 self->aq_fw_ops->set_phyloopback(self->aq_hw,
1372 AQ_HW_LOOPBACK_PHYINT_SYS,
1373 !!(cfg->priv_flags &
1374 BIT(AQ_HW_LOOPBACK_PHYINT_SYS)));
1375
1376 self->aq_fw_ops->set_phyloopback(self->aq_hw,
1377 AQ_HW_LOOPBACK_PHYEXT_SYS,
1378 !!(cfg->priv_flags &
1379 BIT(AQ_HW_LOOPBACK_PHYEXT_SYS)));
1380 mutex_unlock(&self->fwreq_mutex);
1381
1382 return 0;
1383 }
1384
aq_nic_stop(struct aq_nic_s * self)1385 int aq_nic_stop(struct aq_nic_s *self)
1386 {
1387 unsigned int i = 0U;
1388
1389 netif_tx_disable(self->ndev);
1390 netif_carrier_off(self->ndev);
1391
1392 del_timer_sync(&self->service_timer);
1393 cancel_work_sync(&self->service_task);
1394
1395 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
1396
1397 if (self->aq_nic_cfg.is_polling)
1398 del_timer_sync(&self->polling_timer);
1399 else
1400 aq_pci_func_free_irqs(self);
1401
1402 aq_ptp_irq_free(self);
1403
1404 for (i = 0U; self->aq_vecs > i; ++i)
1405 aq_vec_stop(self->aq_vec[i]);
1406
1407 aq_ptp_ring_stop(self);
1408
1409 return self->aq_hw_ops->hw_stop(self->aq_hw);
1410 }
1411
aq_nic_set_power(struct aq_nic_s * self)1412 void aq_nic_set_power(struct aq_nic_s *self)
1413 {
1414 if (self->power_state != AQ_HW_POWER_STATE_D0 ||
1415 self->aq_hw->aq_nic_cfg->wol)
1416 if (likely(self->aq_fw_ops->set_power)) {
1417 mutex_lock(&self->fwreq_mutex);
1418 self->aq_fw_ops->set_power(self->aq_hw,
1419 self->power_state,
1420 self->ndev->dev_addr);
1421 mutex_unlock(&self->fwreq_mutex);
1422 }
1423 }
1424
aq_nic_deinit(struct aq_nic_s * self,bool link_down)1425 void aq_nic_deinit(struct aq_nic_s *self, bool link_down)
1426 {
1427 struct aq_vec_s *aq_vec = NULL;
1428 unsigned int i = 0U;
1429
1430 if (!self)
1431 goto err_exit;
1432
1433 for (i = 0U; i < self->aq_vecs; i++) {
1434 aq_vec = self->aq_vec[i];
1435 aq_vec_deinit(aq_vec);
1436 aq_vec_ring_free(aq_vec);
1437 }
1438
1439 aq_ptp_unregister(self);
1440 aq_ptp_ring_deinit(self);
1441 aq_ptp_ring_free(self);
1442 aq_ptp_free(self);
1443
1444 if (likely(self->aq_fw_ops->deinit) && link_down) {
1445 mutex_lock(&self->fwreq_mutex);
1446 self->aq_fw_ops->deinit(self->aq_hw);
1447 mutex_unlock(&self->fwreq_mutex);
1448 }
1449
1450 err_exit:;
1451 }
1452
aq_nic_free_vectors(struct aq_nic_s * self)1453 void aq_nic_free_vectors(struct aq_nic_s *self)
1454 {
1455 unsigned int i = 0U;
1456
1457 if (!self)
1458 goto err_exit;
1459
1460 for (i = ARRAY_SIZE(self->aq_vec); i--;) {
1461 if (self->aq_vec[i]) {
1462 aq_vec_free(self->aq_vec[i]);
1463 self->aq_vec[i] = NULL;
1464 }
1465 }
1466
1467 err_exit:;
1468 }
1469
aq_nic_realloc_vectors(struct aq_nic_s * self)1470 int aq_nic_realloc_vectors(struct aq_nic_s *self)
1471 {
1472 struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
1473
1474 aq_nic_free_vectors(self);
1475
1476 for (self->aq_vecs = 0; self->aq_vecs < cfg->vecs; self->aq_vecs++) {
1477 self->aq_vec[self->aq_vecs] = aq_vec_alloc(self, self->aq_vecs,
1478 cfg);
1479 if (unlikely(!self->aq_vec[self->aq_vecs]))
1480 return -ENOMEM;
1481 }
1482
1483 return 0;
1484 }
1485
aq_nic_shutdown(struct aq_nic_s * self)1486 void aq_nic_shutdown(struct aq_nic_s *self)
1487 {
1488 int err = 0;
1489
1490 if (!self->ndev)
1491 return;
1492
1493 rtnl_lock();
1494
1495 netif_device_detach(self->ndev);
1496
1497 if (netif_running(self->ndev)) {
1498 err = aq_nic_stop(self);
1499 if (err < 0)
1500 goto err_exit;
1501 }
1502 aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol);
1503 aq_nic_set_power(self);
1504
1505 err_exit:
1506 rtnl_unlock();
1507 }
1508
aq_nic_reserve_filter(struct aq_nic_s * self,enum aq_rx_filter_type type)1509 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type)
1510 {
1511 u8 location = 0xFF;
1512 u32 fltr_cnt;
1513 u32 n_bit;
1514
1515 switch (type) {
1516 case aq_rx_filter_ethertype:
1517 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT -
1518 self->aq_hw_rx_fltrs.fet_reserved_count;
1519 self->aq_hw_rx_fltrs.fet_reserved_count++;
1520 break;
1521 case aq_rx_filter_l3l4:
1522 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4;
1523 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count;
1524
1525 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit);
1526 self->aq_hw_rx_fltrs.fl3l4.reserved_count++;
1527 location = n_bit;
1528 break;
1529 default:
1530 break;
1531 }
1532
1533 return location;
1534 }
1535
aq_nic_release_filter(struct aq_nic_s * self,enum aq_rx_filter_type type,u32 location)1536 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
1537 u32 location)
1538 {
1539 switch (type) {
1540 case aq_rx_filter_ethertype:
1541 self->aq_hw_rx_fltrs.fet_reserved_count--;
1542 break;
1543 case aq_rx_filter_l3l4:
1544 self->aq_hw_rx_fltrs.fl3l4.reserved_count--;
1545 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location);
1546 break;
1547 default:
1548 break;
1549 }
1550 }
1551
aq_nic_set_downshift(struct aq_nic_s * self,int val)1552 int aq_nic_set_downshift(struct aq_nic_s *self, int val)
1553 {
1554 int err = 0;
1555 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1556
1557 if (!self->aq_fw_ops->set_downshift)
1558 return -EOPNOTSUPP;
1559
1560 if (val > 15) {
1561 netdev_err(self->ndev, "downshift counter should be <= 15\n");
1562 return -EINVAL;
1563 }
1564 cfg->downshift_counter = val;
1565
1566 mutex_lock(&self->fwreq_mutex);
1567 err = self->aq_fw_ops->set_downshift(self->aq_hw, cfg->downshift_counter);
1568 mutex_unlock(&self->fwreq_mutex);
1569
1570 return err;
1571 }
1572
aq_nic_set_media_detect(struct aq_nic_s * self,int val)1573 int aq_nic_set_media_detect(struct aq_nic_s *self, int val)
1574 {
1575 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1576 int err = 0;
1577
1578 if (!self->aq_fw_ops->set_media_detect)
1579 return -EOPNOTSUPP;
1580
1581 if (val > 0 && val != AQ_HW_MEDIA_DETECT_CNT) {
1582 netdev_err(self->ndev, "EDPD on this device could have only fixed value of %d\n",
1583 AQ_HW_MEDIA_DETECT_CNT);
1584 return -EINVAL;
1585 }
1586
1587 mutex_lock(&self->fwreq_mutex);
1588 err = self->aq_fw_ops->set_media_detect(self->aq_hw, !!val);
1589 mutex_unlock(&self->fwreq_mutex);
1590
1591 /* msecs plays no role - configuration is always fixed in PHY */
1592 if (!err)
1593 cfg->is_media_detect = !!val;
1594
1595 return err;
1596 }
1597
aq_nic_setup_tc_mqprio(struct aq_nic_s * self,u32 tcs,u8 * prio_tc_map)1598 int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map)
1599 {
1600 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1601 const unsigned int prev_vecs = cfg->vecs;
1602 bool ndev_running;
1603 int err = 0;
1604 int i;
1605
1606 /* if already the same configuration or
1607 * disable request (tcs is 0) and we already is disabled
1608 */
1609 if (tcs == cfg->tcs || (tcs == 0 && !cfg->is_qos))
1610 return 0;
1611
1612 ndev_running = netif_running(self->ndev);
1613 if (ndev_running)
1614 dev_close(self->ndev);
1615
1616 cfg->tcs = tcs;
1617 if (cfg->tcs == 0)
1618 cfg->tcs = 1;
1619 if (prio_tc_map)
1620 memcpy(cfg->prio_tc_map, prio_tc_map, sizeof(cfg->prio_tc_map));
1621 else
1622 for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
1623 cfg->prio_tc_map[i] = cfg->tcs * i / 8;
1624
1625 cfg->is_qos = !!tcs;
1626 cfg->is_ptp = (cfg->tcs <= AQ_HW_PTP_TC);
1627 if (!cfg->is_ptp)
1628 netdev_warn(self->ndev, "%s\n",
1629 "PTP is auto disabled due to requested TC count.");
1630
1631 netdev_set_num_tc(self->ndev, cfg->tcs);
1632
1633 /* Changing the number of TCs might change the number of vectors */
1634 aq_nic_cfg_update_num_vecs(self);
1635 if (prev_vecs != cfg->vecs) {
1636 err = aq_nic_realloc_vectors(self);
1637 if (err)
1638 goto err_exit;
1639 }
1640
1641 if (ndev_running)
1642 err = dev_open(self->ndev, NULL);
1643
1644 err_exit:
1645 return err;
1646 }
1647
aq_nic_setup_tc_max_rate(struct aq_nic_s * self,const unsigned int tc,const u32 max_rate)1648 int aq_nic_setup_tc_max_rate(struct aq_nic_s *self, const unsigned int tc,
1649 const u32 max_rate)
1650 {
1651 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1652
1653 if (tc >= AQ_CFG_TCS_MAX)
1654 return -EINVAL;
1655
1656 if (max_rate && max_rate < 10) {
1657 netdev_warn(self->ndev,
1658 "Setting %s to the minimum usable value of %dMbps.\n",
1659 "max rate", 10);
1660 cfg->tc_max_rate[tc] = 10;
1661 } else {
1662 cfg->tc_max_rate[tc] = max_rate;
1663 }
1664
1665 return 0;
1666 }
1667
aq_nic_setup_tc_min_rate(struct aq_nic_s * self,const unsigned int tc,const u32 min_rate)1668 int aq_nic_setup_tc_min_rate(struct aq_nic_s *self, const unsigned int tc,
1669 const u32 min_rate)
1670 {
1671 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1672
1673 if (tc >= AQ_CFG_TCS_MAX)
1674 return -EINVAL;
1675
1676 if (min_rate)
1677 set_bit(tc, &cfg->tc_min_rate_msk);
1678 else
1679 clear_bit(tc, &cfg->tc_min_rate_msk);
1680
1681 if (min_rate && min_rate < 20) {
1682 netdev_warn(self->ndev,
1683 "Setting %s to the minimum usable value of %dMbps.\n",
1684 "min rate", 20);
1685 cfg->tc_min_rate[tc] = 20;
1686 } else {
1687 cfg->tc_min_rate[tc] = min_rate;
1688 }
1689
1690 return 0;
1691 }
1692