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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 | ||
27 | static 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 */ | |
50 | static 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 */ | |
85 | int 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 | ||
120 | static 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; | |
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 | ||
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 | ||
169 | err_exit: | |
170 | mod_timer(&self->service_timer, | |
171 | jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL); | |
172 | } | |
173 | ||
174 | static 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 | ||
188 | static 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 | ||
193 | struct aq_nic_s *aq_nic_alloc_cold(const struct net_device_ops *ndev_ops, | |
194 | const struct ethtool_ops *et_ops, | |
195 | struct device *dev, | |
196 | struct aq_pci_func_s *aq_pci_func, | |
197 | unsigned int port, | |
198 | const struct aq_hw_ops *aq_hw_ops) | |
199 | { | |
200 | struct net_device *ndev = NULL; | |
201 | struct aq_nic_s *self = NULL; | |
202 | int err = 0; | |
203 | ||
204 | ndev = aq_nic_ndev_alloc(); | |
205 | self = netdev_priv(ndev); | |
206 | if (!self) { | |
207 | err = -EINVAL; | |
208 | goto err_exit; | |
209 | } | |
210 | ||
211 | ndev->netdev_ops = ndev_ops; | |
212 | ndev->ethtool_ops = et_ops; | |
213 | ||
214 | SET_NETDEV_DEV(ndev, dev); | |
215 | ||
216 | ndev->if_port = port; | |
217 | self->ndev = ndev; | |
218 | ||
219 | self->aq_pci_func = aq_pci_func; | |
220 | ||
221 | self->aq_hw_ops = *aq_hw_ops; | |
222 | self->port = (u8)port; | |
223 | ||
224 | self->aq_hw = self->aq_hw_ops.create(aq_pci_func, self->port, | |
225 | &self->aq_hw_ops); | |
226 | err = self->aq_hw_ops.get_hw_caps(self->aq_hw, &self->aq_hw_caps); | |
227 | if (err < 0) | |
228 | goto err_exit; | |
229 | ||
230 | aq_nic_cfg_init_defaults(self); | |
231 | ||
232 | err_exit: | |
233 | if (err < 0) { | |
234 | aq_nic_free_hot_resources(self); | |
235 | self = NULL; | |
236 | } | |
237 | return self; | |
238 | } | |
239 | ||
240 | int aq_nic_ndev_register(struct aq_nic_s *self) | |
241 | { | |
242 | int err = 0; | |
243 | unsigned int i = 0U; | |
244 | ||
245 | if (!self->ndev) { | |
246 | err = -EINVAL; | |
247 | goto err_exit; | |
248 | } | |
249 | err = self->aq_hw_ops.hw_get_mac_permanent(self->aq_hw, | |
250 | self->aq_nic_cfg.aq_hw_caps, | |
251 | self->ndev->dev_addr); | |
252 | if (err < 0) | |
253 | goto err_exit; | |
254 | ||
255 | #if defined(AQ_CFG_MAC_ADDR_PERMANENT) | |
256 | { | |
257 | static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT; | |
258 | ||
259 | ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent); | |
260 | } | |
261 | #endif | |
262 | err = register_netdev(self->ndev); | |
263 | if (err < 0) | |
264 | goto err_exit; | |
265 | ||
266 | self->is_ndev_registered = true; | |
267 | netif_carrier_off(self->ndev); | |
268 | ||
269 | for (i = AQ_CFG_VECS_MAX; i--;) | |
270 | aq_nic_ndev_queue_stop(self, i); | |
271 | ||
272 | err_exit: | |
273 | return err; | |
274 | } | |
275 | ||
276 | int aq_nic_ndev_init(struct aq_nic_s *self) | |
277 | { | |
278 | struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps; | |
279 | struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg; | |
280 | ||
281 | self->ndev->hw_features |= aq_hw_caps->hw_features; | |
282 | self->ndev->features = aq_hw_caps->hw_features; | |
283 | self->ndev->priv_flags = aq_hw_caps->hw_priv_flags; | |
284 | self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN; | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | void aq_nic_ndev_free(struct aq_nic_s *self) | |
290 | { | |
291 | if (!self->ndev) | |
292 | goto err_exit; | |
293 | ||
294 | if (self->is_ndev_registered) | |
295 | unregister_netdev(self->ndev); | |
296 | ||
297 | if (self->aq_hw) | |
298 | self->aq_hw_ops.destroy(self->aq_hw); | |
299 | ||
300 | free_netdev(self->ndev); | |
301 | ||
302 | err_exit:; | |
303 | } | |
304 | ||
305 | struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev) | |
306 | { | |
307 | struct aq_nic_s *self = NULL; | |
308 | int err = 0; | |
309 | ||
310 | if (!ndev) { | |
311 | err = -EINVAL; | |
312 | goto err_exit; | |
313 | } | |
314 | self = netdev_priv(ndev); | |
315 | ||
316 | if (!self) { | |
317 | err = -EINVAL; | |
318 | goto err_exit; | |
319 | } | |
320 | if (netif_running(ndev)) { | |
321 | unsigned int i; | |
322 | ||
323 | for (i = AQ_CFG_VECS_MAX; i--;) | |
324 | netif_stop_subqueue(ndev, i); | |
325 | } | |
326 | ||
327 | for (self->aq_vecs = 0; self->aq_vecs < self->aq_nic_cfg.vecs; | |
328 | self->aq_vecs++) { | |
329 | self->aq_vec[self->aq_vecs] = | |
330 | aq_vec_alloc(self, self->aq_vecs, &self->aq_nic_cfg); | |
331 | if (!self->aq_vec[self->aq_vecs]) { | |
332 | err = -ENOMEM; | |
333 | goto err_exit; | |
334 | } | |
335 | } | |
336 | ||
337 | err_exit: | |
338 | if (err < 0) { | |
339 | aq_nic_free_hot_resources(self); | |
340 | self = NULL; | |
341 | } | |
342 | return self; | |
343 | } | |
344 | ||
345 | void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx, | |
346 | struct aq_ring_s *ring) | |
347 | { | |
348 | self->aq_ring_tx[idx] = ring; | |
349 | } | |
350 | ||
351 | struct device *aq_nic_get_dev(struct aq_nic_s *self) | |
352 | { | |
353 | return self->ndev->dev.parent; | |
354 | } | |
355 | ||
356 | struct net_device *aq_nic_get_ndev(struct aq_nic_s *self) | |
357 | { | |
358 | return self->ndev; | |
359 | } | |
360 | ||
361 | int aq_nic_init(struct aq_nic_s *self) | |
362 | { | |
363 | struct aq_vec_s *aq_vec = NULL; | |
364 | int err = 0; | |
365 | unsigned int i = 0U; | |
366 | ||
367 | self->power_state = AQ_HW_POWER_STATE_D0; | |
368 | err = self->aq_hw_ops.hw_reset(self->aq_hw); | |
369 | if (err < 0) | |
370 | goto err_exit; | |
371 | ||
372 | err = self->aq_hw_ops.hw_init(self->aq_hw, &self->aq_nic_cfg, | |
373 | aq_nic_get_ndev(self)->dev_addr); | |
374 | if (err < 0) | |
375 | goto err_exit; | |
376 | ||
377 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
378 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) | |
379 | aq_vec_init(aq_vec, &self->aq_hw_ops, self->aq_hw); | |
380 | ||
381 | err_exit: | |
382 | return err; | |
383 | } | |
384 | ||
385 | void aq_nic_ndev_queue_start(struct aq_nic_s *self, unsigned int idx) | |
386 | { | |
387 | netif_start_subqueue(self->ndev, idx); | |
388 | } | |
389 | ||
390 | void aq_nic_ndev_queue_stop(struct aq_nic_s *self, unsigned int idx) | |
391 | { | |
392 | netif_stop_subqueue(self->ndev, idx); | |
393 | } | |
394 | ||
395 | int aq_nic_start(struct aq_nic_s *self) | |
396 | { | |
397 | struct aq_vec_s *aq_vec = NULL; | |
398 | int err = 0; | |
399 | unsigned int i = 0U; | |
400 | ||
401 | err = self->aq_hw_ops.hw_multicast_list_set(self->aq_hw, | |
402 | self->mc_list.ar, | |
403 | self->mc_list.count); | |
404 | if (err < 0) | |
405 | goto err_exit; | |
406 | ||
407 | err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, | |
408 | self->packet_filter); | |
409 | if (err < 0) | |
410 | goto err_exit; | |
411 | ||
412 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
413 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { | |
414 | err = aq_vec_start(aq_vec); | |
415 | if (err < 0) | |
416 | goto err_exit; | |
417 | } | |
418 | ||
419 | err = self->aq_hw_ops.hw_start(self->aq_hw); | |
420 | if (err < 0) | |
421 | goto err_exit; | |
422 | ||
423 | err = self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw, | |
424 | self->aq_nic_cfg.is_interrupt_moderation); | |
425 | if (err < 0) | |
426 | goto err_exit; | |
427 | setup_timer(&self->service_timer, &aq_nic_service_timer_cb, | |
428 | (unsigned long)self); | |
429 | mod_timer(&self->service_timer, jiffies + | |
430 | AQ_CFG_SERVICE_TIMER_INTERVAL); | |
431 | ||
432 | if (self->aq_nic_cfg.is_polling) { | |
433 | setup_timer(&self->polling_timer, &aq_nic_polling_timer_cb, | |
434 | (unsigned long)self); | |
435 | mod_timer(&self->polling_timer, jiffies + | |
436 | AQ_CFG_POLLING_TIMER_INTERVAL); | |
437 | } else { | |
438 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
439 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { | |
440 | err = aq_pci_func_alloc_irq(self->aq_pci_func, i, | |
441 | self->ndev->name, aq_vec, | |
442 | aq_vec_get_affinity_mask(aq_vec)); | |
443 | if (err < 0) | |
444 | goto err_exit; | |
445 | } | |
446 | ||
447 | err = self->aq_hw_ops.hw_irq_enable(self->aq_hw, | |
448 | AQ_CFG_IRQ_MASK); | |
449 | if (err < 0) | |
450 | goto err_exit; | |
451 | } | |
452 | ||
453 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
454 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) | |
455 | aq_nic_ndev_queue_start(self, i); | |
456 | ||
457 | err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs); | |
458 | if (err < 0) | |
459 | goto err_exit; | |
460 | ||
461 | err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs); | |
462 | if (err < 0) | |
463 | goto err_exit; | |
464 | ||
465 | err_exit: | |
466 | return err; | |
467 | } | |
468 | ||
469 | static unsigned int aq_nic_map_skb_frag(struct aq_nic_s *self, | |
470 | struct sk_buff *skb, | |
471 | struct aq_ring_buff_s *dx) | |
472 | { | |
473 | unsigned int ret = 0U; | |
474 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
475 | unsigned int frag_count = 0U; | |
476 | ||
477 | dx->flags = 0U; | |
478 | dx->len = skb_headlen(skb); | |
479 | dx->pa = dma_map_single(aq_nic_get_dev(self), skb->data, dx->len, | |
480 | DMA_TO_DEVICE); | |
481 | dx->len_pkt = skb->len; | |
482 | dx->is_sop = 1U; | |
483 | dx->is_mapped = 1U; | |
484 | ||
485 | ++ret; | |
486 | ||
487 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
488 | dx->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ? 1U : 0U; | |
489 | dx->is_tcp_cso = | |
490 | (ip_hdr(skb)->protocol == IPPROTO_TCP) ? 1U : 0U; | |
491 | dx->is_udp_cso = | |
492 | (ip_hdr(skb)->protocol == IPPROTO_UDP) ? 1U : 0U; | |
493 | } | |
494 | ||
495 | for (; nr_frags--; ++frag_count) { | |
496 | unsigned int frag_len; | |
497 | dma_addr_t frag_pa; | |
498 | skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count]; | |
499 | ||
500 | frag_len = skb_frag_size(frag); | |
501 | ||
502 | frag_pa = skb_frag_dma_map(aq_nic_get_dev(self), frag, 0, | |
503 | frag_len, DMA_TO_DEVICE); | |
504 | ||
505 | while (frag_len > AQ_CFG_TX_FRAME_MAX) { | |
506 | ++dx; | |
507 | ++ret; | |
508 | dx->flags = 0U; | |
509 | dx->len = AQ_CFG_TX_FRAME_MAX; | |
510 | dx->pa = frag_pa; | |
511 | dx->is_mapped = 1U; | |
512 | ||
513 | frag_len -= AQ_CFG_TX_FRAME_MAX; | |
514 | frag_pa += AQ_CFG_TX_FRAME_MAX; | |
515 | } | |
516 | ||
517 | ++dx; | |
518 | ++ret; | |
519 | ||
520 | dx->flags = 0U; | |
521 | dx->len = frag_len; | |
522 | dx->pa = frag_pa; | |
523 | dx->is_mapped = 1U; | |
524 | } | |
525 | ||
526 | dx->is_eop = 1U; | |
527 | dx->skb = skb; | |
528 | ||
529 | return ret; | |
530 | } | |
531 | ||
532 | static unsigned int aq_nic_map_skb_lso(struct aq_nic_s *self, | |
533 | struct sk_buff *skb, | |
534 | struct aq_ring_buff_s *dx) | |
535 | { | |
536 | dx->flags = 0U; | |
537 | dx->len_pkt = skb->len; | |
538 | dx->len_l2 = ETH_HLEN; | |
539 | dx->len_l3 = ip_hdrlen(skb); | |
540 | dx->len_l4 = tcp_hdrlen(skb); | |
541 | dx->mss = skb_shinfo(skb)->gso_size; | |
542 | dx->is_txc = 1U; | |
543 | return 1U; | |
544 | } | |
545 | ||
546 | static unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb, | |
547 | struct aq_ring_buff_s *dx) | |
548 | { | |
549 | unsigned int ret = 0U; | |
550 | ||
551 | if (unlikely(skb_is_gso(skb))) { | |
552 | ret = aq_nic_map_skb_lso(self, skb, dx); | |
553 | ++dx; | |
554 | } | |
555 | ||
556 | ret += aq_nic_map_skb_frag(self, skb, dx); | |
557 | ||
558 | return ret; | |
559 | } | |
560 | ||
561 | int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb) | |
562 | __releases(&ring->lock) | |
563 | __acquires(&ring->lock) | |
564 | { | |
565 | struct aq_ring_s *ring = NULL; | |
566 | unsigned int frags = 0U; | |
567 | unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs; | |
568 | unsigned int tc = 0U; | |
569 | unsigned int trys = AQ_CFG_LOCK_TRYS; | |
570 | int err = 0; | |
571 | bool is_nic_in_bad_state; | |
572 | struct aq_ring_buff_s buffers[AQ_CFG_SKB_FRAGS_MAX]; | |
573 | ||
574 | frags = skb_shinfo(skb)->nr_frags + 1; | |
575 | ||
576 | ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)]; | |
577 | ||
578 | if (frags > AQ_CFG_SKB_FRAGS_MAX) { | |
579 | dev_kfree_skb_any(skb); | |
580 | goto err_exit; | |
581 | } | |
582 | ||
583 | is_nic_in_bad_state = aq_utils_obj_test(&self->header.flags, | |
584 | AQ_NIC_FLAGS_IS_NOT_TX_READY) || | |
585 | (aq_ring_avail_dx(ring) < | |
586 | AQ_CFG_SKB_FRAGS_MAX); | |
587 | ||
588 | if (is_nic_in_bad_state) { | |
589 | aq_nic_ndev_queue_stop(self, ring->idx); | |
590 | err = NETDEV_TX_BUSY; | |
591 | goto err_exit; | |
592 | } | |
593 | ||
594 | do { | |
595 | if (spin_trylock(&ring->header.lock)) { | |
596 | frags = aq_nic_map_skb(self, skb, &buffers[0]); | |
597 | ||
598 | aq_ring_tx_append_buffs(ring, &buffers[0], frags); | |
599 | ||
600 | err = self->aq_hw_ops.hw_ring_tx_xmit(self->aq_hw, | |
601 | ring, frags); | |
602 | if (err >= 0) { | |
603 | if (aq_ring_avail_dx(ring) < | |
604 | AQ_CFG_SKB_FRAGS_MAX + 1) | |
605 | aq_nic_ndev_queue_stop(self, ring->idx); | |
606 | } | |
607 | spin_unlock(&ring->header.lock); | |
608 | ||
609 | if (err >= 0) { | |
610 | ++ring->stats.tx.packets; | |
611 | ring->stats.tx.bytes += skb->len; | |
612 | } | |
613 | break; | |
614 | } | |
615 | } while (--trys); | |
616 | ||
617 | if (!trys) { | |
618 | err = NETDEV_TX_BUSY; | |
619 | goto err_exit; | |
620 | } | |
621 | ||
622 | err_exit: | |
623 | return err; | |
624 | } | |
625 | ||
626 | int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags) | |
627 | { | |
628 | int err = 0; | |
629 | ||
630 | err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, flags); | |
631 | if (err < 0) | |
632 | goto err_exit; | |
633 | ||
634 | self->packet_filter = flags; | |
635 | ||
636 | err_exit: | |
637 | return err; | |
638 | } | |
639 | ||
640 | int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) | |
641 | { | |
642 | struct netdev_hw_addr *ha = NULL; | |
643 | unsigned int i = 0U; | |
644 | ||
645 | self->mc_list.count = 0U; | |
646 | ||
647 | netdev_for_each_mc_addr(ha, ndev) { | |
648 | ether_addr_copy(self->mc_list.ar[i++], ha->addr); | |
649 | ++self->mc_list.count; | |
650 | } | |
651 | ||
652 | return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw, | |
653 | self->mc_list.ar, | |
654 | self->mc_list.count); | |
655 | } | |
656 | ||
657 | int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) | |
658 | { | |
659 | int err = 0; | |
660 | ||
661 | if (new_mtu > self->aq_hw_caps.mtu) { | |
662 | err = -EINVAL; | |
663 | goto err_exit; | |
664 | } | |
665 | self->aq_nic_cfg.mtu = new_mtu; | |
666 | ||
667 | err_exit: | |
668 | return err; | |
669 | } | |
670 | ||
671 | int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev) | |
672 | { | |
673 | return self->aq_hw_ops.hw_set_mac_address(self->aq_hw, ndev->dev_addr); | |
674 | } | |
675 | ||
676 | unsigned int aq_nic_get_link_speed(struct aq_nic_s *self) | |
677 | { | |
678 | return self->link_status.mbps; | |
679 | } | |
680 | ||
681 | int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p) | |
682 | { | |
683 | u32 *regs_buff = p; | |
684 | int err = 0; | |
685 | ||
686 | regs->version = 1; | |
687 | ||
688 | err = self->aq_hw_ops.hw_get_regs(self->aq_hw, | |
689 | &self->aq_hw_caps, regs_buff); | |
690 | if (err < 0) | |
691 | goto err_exit; | |
692 | ||
693 | err_exit: | |
694 | return err; | |
695 | } | |
696 | ||
697 | int aq_nic_get_regs_count(struct aq_nic_s *self) | |
698 | { | |
699 | return self->aq_hw_caps.mac_regs_count; | |
700 | } | |
701 | ||
702 | void aq_nic_get_stats(struct aq_nic_s *self, u64 *data) | |
703 | { | |
704 | struct aq_vec_s *aq_vec = NULL; | |
705 | unsigned int i = 0U; | |
706 | unsigned int count = 0U; | |
707 | int err = 0; | |
708 | ||
709 | err = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw, data, &count); | |
710 | if (err < 0) | |
711 | goto err_exit; | |
712 | ||
713 | data += count; | |
714 | count = 0U; | |
715 | ||
716 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
717 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) { | |
718 | data += count; | |
719 | aq_vec_get_sw_stats(aq_vec, data, &count); | |
720 | } | |
721 | ||
722 | err_exit:; | |
723 | (void)err; | |
724 | } | |
725 | ||
726 | void aq_nic_get_link_ksettings(struct aq_nic_s *self, | |
727 | struct ethtool_link_ksettings *cmd) | |
728 | { | |
729 | cmd->base.port = PORT_TP; | |
730 | /* This driver supports only 10G capable adapters, so DUPLEX_FULL */ | |
731 | cmd->base.duplex = DUPLEX_FULL; | |
732 | cmd->base.autoneg = self->aq_nic_cfg.is_autoneg; | |
733 | ||
734 | ethtool_link_ksettings_zero_link_mode(cmd, supported); | |
735 | ||
736 | if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_10G) | |
737 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
738 | 10000baseT_Full); | |
739 | ||
740 | if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_5G) | |
741 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
742 | 5000baseT_Full); | |
743 | ||
744 | if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_2GS) | |
745 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
746 | 2500baseT_Full); | |
747 | ||
748 | if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_1G) | |
749 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
750 | 1000baseT_Full); | |
751 | ||
752 | if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_100M) | |
753 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
754 | 100baseT_Full); | |
755 | ||
756 | if (self->aq_hw_caps.flow_control) | |
757 | ethtool_link_ksettings_add_link_mode(cmd, supported, | |
758 | Pause); | |
759 | ||
760 | ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); | |
761 | ethtool_link_ksettings_add_link_mode(cmd, supported, TP); | |
762 | ||
763 | ethtool_link_ksettings_zero_link_mode(cmd, advertising); | |
764 | ||
765 | if (self->aq_nic_cfg.is_autoneg) | |
766 | ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); | |
767 | ||
768 | if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G) | |
769 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
770 | 10000baseT_Full); | |
771 | ||
772 | if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G) | |
773 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
774 | 5000baseT_Full); | |
775 | ||
776 | if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS) | |
777 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
778 | 2500baseT_Full); | |
779 | ||
780 | if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G) | |
781 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
782 | 1000baseT_Full); | |
783 | ||
784 | if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M) | |
785 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
786 | 100baseT_Full); | |
787 | ||
788 | if (self->aq_nic_cfg.flow_control) | |
789 | ethtool_link_ksettings_add_link_mode(cmd, advertising, | |
790 | Pause); | |
791 | ||
792 | ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); | |
793 | } | |
794 | ||
795 | int aq_nic_set_link_ksettings(struct aq_nic_s *self, | |
796 | const struct ethtool_link_ksettings *cmd) | |
797 | { | |
798 | u32 speed = 0U; | |
799 | u32 rate = 0U; | |
800 | int err = 0; | |
801 | ||
802 | if (cmd->base.autoneg == AUTONEG_ENABLE) { | |
803 | rate = self->aq_hw_caps.link_speed_msk; | |
804 | self->aq_nic_cfg.is_autoneg = true; | |
805 | } else { | |
806 | speed = cmd->base.speed; | |
807 | ||
808 | switch (speed) { | |
809 | case SPEED_100: | |
810 | rate = AQ_NIC_RATE_100M; | |
811 | break; | |
812 | ||
813 | case SPEED_1000: | |
814 | rate = AQ_NIC_RATE_1G; | |
815 | break; | |
816 | ||
817 | case SPEED_2500: | |
818 | rate = AQ_NIC_RATE_2GS; | |
819 | break; | |
820 | ||
821 | case SPEED_5000: | |
822 | rate = AQ_NIC_RATE_5G; | |
823 | break; | |
824 | ||
825 | case SPEED_10000: | |
826 | rate = AQ_NIC_RATE_10G; | |
827 | break; | |
828 | ||
829 | default: | |
830 | err = -1; | |
831 | goto err_exit; | |
832 | break; | |
833 | } | |
834 | if (!(self->aq_hw_caps.link_speed_msk & rate)) { | |
835 | err = -1; | |
836 | goto err_exit; | |
837 | } | |
838 | ||
839 | self->aq_nic_cfg.is_autoneg = false; | |
840 | } | |
841 | ||
842 | err = self->aq_hw_ops.hw_set_link_speed(self->aq_hw, rate); | |
843 | if (err < 0) | |
844 | goto err_exit; | |
845 | ||
846 | self->aq_nic_cfg.link_speed_msk = rate; | |
847 | ||
848 | err_exit: | |
849 | return err; | |
850 | } | |
851 | ||
852 | struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self) | |
853 | { | |
854 | return &self->aq_nic_cfg; | |
855 | } | |
856 | ||
857 | u32 aq_nic_get_fw_version(struct aq_nic_s *self) | |
858 | { | |
859 | u32 fw_version = 0U; | |
860 | ||
861 | self->aq_hw_ops.hw_get_fw_version(self->aq_hw, &fw_version); | |
862 | ||
863 | return fw_version; | |
864 | } | |
865 | ||
866 | int aq_nic_stop(struct aq_nic_s *self) | |
867 | { | |
868 | struct aq_vec_s *aq_vec = NULL; | |
869 | unsigned int i = 0U; | |
870 | ||
871 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
872 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) | |
873 | aq_nic_ndev_queue_stop(self, i); | |
874 | ||
875 | del_timer_sync(&self->service_timer); | |
876 | ||
877 | self->aq_hw_ops.hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK); | |
878 | ||
879 | if (self->aq_nic_cfg.is_polling) | |
880 | del_timer_sync(&self->polling_timer); | |
881 | else | |
882 | aq_pci_func_free_irqs(self->aq_pci_func); | |
883 | ||
884 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
885 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) | |
886 | aq_vec_stop(aq_vec); | |
887 | ||
888 | return self->aq_hw_ops.hw_stop(self->aq_hw); | |
889 | } | |
890 | ||
891 | void aq_nic_deinit(struct aq_nic_s *self) | |
892 | { | |
893 | struct aq_vec_s *aq_vec = NULL; | |
894 | unsigned int i = 0U; | |
895 | ||
896 | if (!self) | |
897 | goto err_exit; | |
898 | ||
899 | for (i = 0U, aq_vec = self->aq_vec[0]; | |
900 | self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) | |
901 | aq_vec_deinit(aq_vec); | |
902 | ||
903 | if (self->power_state == AQ_HW_POWER_STATE_D0) { | |
904 | (void)self->aq_hw_ops.hw_deinit(self->aq_hw); | |
905 | } else { | |
906 | (void)self->aq_hw_ops.hw_set_power(self->aq_hw, | |
907 | self->power_state); | |
908 | } | |
909 | ||
910 | err_exit:; | |
911 | } | |
912 | ||
913 | void aq_nic_free_hot_resources(struct aq_nic_s *self) | |
914 | { | |
915 | unsigned int i = 0U; | |
916 | ||
917 | if (!self) | |
918 | goto err_exit; | |
919 | ||
920 | for (i = AQ_DIMOF(self->aq_vec); i--;) { | |
921 | if (self->aq_vec[i]) | |
922 | aq_vec_free(self->aq_vec[i]); | |
923 | } | |
924 | ||
925 | err_exit:; | |
926 | } | |
927 | ||
928 | int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg) | |
929 | { | |
930 | int err = 0; | |
931 | ||
932 | if (!netif_running(self->ndev)) { | |
933 | err = 0; | |
934 | goto err_exit; | |
935 | } | |
936 | rtnl_lock(); | |
937 | if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) { | |
938 | self->power_state = AQ_HW_POWER_STATE_D3; | |
939 | netif_device_detach(self->ndev); | |
940 | netif_tx_stop_all_queues(self->ndev); | |
941 | ||
942 | err = aq_nic_stop(self); | |
943 | if (err < 0) | |
944 | goto err_exit; | |
945 | ||
946 | aq_nic_deinit(self); | |
947 | } else { | |
948 | err = aq_nic_init(self); | |
949 | if (err < 0) | |
950 | goto err_exit; | |
951 | ||
952 | err = aq_nic_start(self); | |
953 | if (err < 0) | |
954 | goto err_exit; | |
955 | ||
956 | netif_device_attach(self->ndev); | |
957 | netif_tx_start_all_queues(self->ndev); | |
958 | } | |
959 | rtnl_unlock(); | |
960 | ||
961 | err_exit: | |
962 | return err; | |
963 | } |