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net: aquantia: allow rx checksum offload configuration
[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / aquantia / atlantic / aq_nic.c
CommitLineData
97bde5c4
DV		 1/*
2 * aQuantia Corporation Network Driver
3 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 */
9
10/* File aq_nic.c: Definition of common code for NIC. */
11
12#include "aq_nic.h"
13#include "aq_ring.h"
14#include "aq_vec.h"
15#include "aq_hw.h"
16#include "aq_pci_func.h"
97bde5c4 17
b82ee71a 18#include <linux/moduleparam.h>
97bde5c4
DV		 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
b82ee71a
IR		 27static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
28module_param_named(aq_itr, aq_itr, uint, 0644);
29MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
30
31static unsigned int aq_itr_tx;
32module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
33MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
34
35static unsigned int aq_itr_rx;
36module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
37MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
38
9f8a2203
IR		 39static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
40
97bde5c4
DV		 41static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
42{
43 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
44 struct aq_rss_parameters *rss_params = &cfg->aq_rss;
45 int i = 0;
46
47 static u8 rss_key[40] = {
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
55 rss_params->hash_secret_key_size = sizeof(rss_key);
56 memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
57 rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
58
59 for (i = rss_params->indirection_table_size; i--;)
60 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
61}
62
23ee07ad
IR		 63/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
64void aq_nic_cfg_start(struct aq_nic_s *self)
97bde5c4
DV		 65{
66 struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
67
97bde5c4
DV		 68 cfg->tcs = AQ_CFG_TCS_DEF;
69
97bde5c4
DV		 70 cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
71
b82ee71a
IR		 72 cfg->itr = aq_itr;
73 cfg->tx_itr = aq_itr_tx;
74 cfg->rx_itr = aq_itr_rx;
97bde5c4
DV		 75
76 cfg->is_rss = AQ_CFG_IS_RSS_DEF;
77 cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
78 cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
79 cfg->flow_control = AQ_CFG_FC_MODE;
80
81 cfg->mtu = AQ_CFG_MTU_DEF;
82 cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
83 cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
84
85 cfg->is_lro = AQ_CFG_IS_LRO_DEF;
86
87 cfg->vlan_id = 0U;
88
89 aq_nic_rss_init(self, cfg->num_rss_queues);
97bde5c4
DV		 90
91 /*descriptors */
c1af5427
AM		 92 cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
93 cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
97bde5c4
DV		 94
95 /*rss rings */
23ee07ad 96 cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
97bde5c4 97 cfg->vecs = min(cfg->vecs, num_online_cpus());
a09bd81b 98 cfg->vecs = min(cfg->vecs, self->irqvecs);
97bde5c4
DV		 99 /* cfg->vecs should be power of 2 for RSS */
100 if (cfg->vecs >= 8U)
101 cfg->vecs = 8U;
102 else if (cfg->vecs >= 4U)
103 cfg->vecs = 4U;
104 else if (cfg->vecs >= 2U)
105 cfg->vecs = 2U;
106 else
107 cfg->vecs = 1U;
108
64fc7953
PB		 109 cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
110
23ee07ad 111 cfg->irq_type = aq_pci_func_get_irq_type(self);
97bde5c4
DV		 112
113 if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
8fcb98f4 114 (cfg->aq_hw_caps->vecs == 1U) ||
97bde5c4
DV		 115 (cfg->vecs == 1U)) {
116 cfg->is_rss = 0U;
117 cfg->vecs = 1U;
118 }
119
8fcb98f4 120 cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
bbb67a44 121 cfg->features = cfg->aq_hw_caps->hw_features;
97bde5c4
DV		 122}
123
3aec6412
IR		 124static int aq_nic_update_link_status(struct aq_nic_s *self)
125{
0c58c35f 126 int err = self->aq_fw_ops->update_link_status(self->aq_hw);
35e8e8b4 127 u32 fc = 0;
3aec6412
IR		 128
129 if (err)
130 return err;
131
b82ee71a 132 if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
3aec6412
IR		 133 pr_info("%s: link change old %d new %d\n",
134 AQ_CFG_DRV_NAME, self->link_status.mbps,
135 self->aq_hw->aq_link_status.mbps);
b82ee71a 136 aq_nic_update_interrupt_moderation_settings(self);
35e8e8b4
IR		 137
138 /* Driver has to update flow control settings on RX block
139 * on any link event.
140 * We should query FW whether it negotiated FC.
141 */
142 if (self->aq_fw_ops->get_flow_control)
143 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
144 if (self->aq_hw_ops->hw_set_fc)
145 self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
b82ee71a 146 }
3aec6412
IR		 147
148 self->link_status = self->aq_hw->aq_link_status;
149 if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
78f5193d 150 aq_utils_obj_set(&self->flags,
3aec6412 151 AQ_NIC_FLAG_STARTED);
78f5193d 152 aq_utils_obj_clear(&self->flags,
3aec6412
IR		 153 AQ_NIC_LINK_DOWN);
154 netif_carrier_on(self->ndev);
155 netif_tx_wake_all_queues(self->ndev);
156 }
157 if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
158 netif_carrier_off(self->ndev);
159 netif_tx_disable(self->ndev);
78f5193d 160 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
3aec6412
IR		 161 }
162 return 0;
163}
164
e99e88a9 165static void aq_nic_service_timer_cb(struct timer_list *t)
97bde5c4 166{
e99e88a9 167 struct aq_nic_s *self = from_timer(self, t, service_timer);
fdb4a083 168 int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL;
97bde5c4 169 int err = 0;
97bde5c4 170
78f5193d 171 if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
97bde5c4
DV		 172 goto err_exit;
173
3aec6412
IR		 174 err = aq_nic_update_link_status(self);
175 if (err)
97bde5c4
DV		 176 goto err_exit;
177
0c58c35f
IR		 178 if (self->aq_fw_ops->update_stats)
179 self->aq_fw_ops->update_stats(self->aq_hw);
65e665e6 180
9f8a2203 181 aq_nic_update_ndev_stats(self);
97bde5c4 182
fdb4a083
IR		 183 /* If no link - use faster timer rate to detect link up asap */
184 if (!netif_carrier_ok(self->ndev))
185 ctimer = max(ctimer / 2, 1);
97bde5c4
DV		 186
187err_exit:
fdb4a083 188 mod_timer(&self->service_timer, jiffies + ctimer);
97bde5c4
DV		 189}
190
e99e88a9 191static void aq_nic_polling_timer_cb(struct timer_list *t)
97bde5c4 192{
e99e88a9 193 struct aq_nic_s *self = from_timer(self, t, polling_timer);
97bde5c4
DV		 194 struct aq_vec_s *aq_vec = NULL;
195 unsigned int i = 0U;
196
197 for (i = 0U, aq_vec = self->aq_vec[0];
198 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
199 aq_vec_isr(i, (void *)aq_vec);
200
201 mod_timer(&self->polling_timer, jiffies +
e9157848 202 AQ_CFG_POLLING_TIMER_INTERVAL);
97bde5c4
DV		 203}
204
97bde5c4
DV		 205int aq_nic_ndev_register(struct aq_nic_s *self)
206{
207 int err = 0;
97bde5c4
DV		 208
209 if (!self->ndev) {
210 err = -EINVAL;
211 goto err_exit;
212 }
23ee07ad 213
0c58c35f
IR		 214 err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
215 if (err)
216 goto err_exit;
217
218 err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
97bde5c4 219 self->ndev->dev_addr);
23ee07ad 220 if (err)
97bde5c4
DV		 221 goto err_exit;
222
223#if defined(AQ_CFG_MAC_ADDR_PERMANENT)
224 {
225 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
226
227 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
228 }
229#endif
97bde5c4 230
23ee07ad
IR		 231 for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
232 self->aq_vecs++) {
233 self->aq_vec[self->aq_vecs] =
234 aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
235 if (!self->aq_vec[self->aq_vecs]) {
236 err = -ENOMEM;
237 goto err_exit;
238 }
239 }
240
97bde5c4
DV		 241 netif_carrier_off(self->ndev);
242
3aec6412 243 netif_tx_disable(self->ndev);
97bde5c4 244
55629109 245 err = register_netdev(self->ndev);
23ee07ad 246 if (err)
55629109
PB		 247 goto err_exit;
248
97bde5c4
DV		 249err_exit:
250 return err;
251}
252
23ee07ad 253void aq_nic_ndev_init(struct aq_nic_s *self)
97bde5c4 254{
4cbc9f92 255 const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
97bde5c4
DV		 256 struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
257
258 self->ndev->hw_features |= aq_hw_caps->hw_features;
259 self->ndev->features = aq_hw_caps->hw_features;
8c61ab7f
IR		 260 self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
261 NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO;
97bde5c4 262 self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
3e9a5451
IR		 263 self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
264
97bde5c4 265 self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
8fcb98f4 266 self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
97bde5c4 267
97bde5c4
DV		 268}
269
270void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
271 struct aq_ring_s *ring)
272{
273 self->aq_ring_tx[idx] = ring;
274}
275
97bde5c4
DV		 276struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
277{
278 return self->ndev;
279}
280
281int aq_nic_init(struct aq_nic_s *self)
282{
283 struct aq_vec_s *aq_vec = NULL;
284 int err = 0;
285 unsigned int i = 0U;
286
287 self->power_state = AQ_HW_POWER_STATE_D0;
8fcb98f4 288 err = self->aq_hw_ops->hw_reset(self->aq_hw);
97bde5c4
DV		 289 if (err < 0)
290 goto err_exit;
291
8fcb98f4 292 err = self->aq_hw_ops->hw_init(self->aq_hw,
23ee07ad 293 aq_nic_get_ndev(self)->dev_addr);
97bde5c4
DV		 294 if (err < 0)
295 goto err_exit;
296
297 for (i = 0U, aq_vec = self->aq_vec[0];
298 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
8fcb98f4 299 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
97bde5c4 300
23ee07ad
IR		 301 netif_carrier_off(self->ndev);
302
97bde5c4
DV		 303err_exit:
304 return err;
305}
306
97bde5c4
DV		 307int aq_nic_start(struct aq_nic_s *self)
308{
309 struct aq_vec_s *aq_vec = NULL;
310 int err = 0;
311 unsigned int i = 0U;
312
8fcb98f4 313 err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
e9157848
ND		 314 self->mc_list.ar,
315 self->mc_list.count);
97bde5c4
DV		 316 if (err < 0)
317 goto err_exit;
318
8fcb98f4 319 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
e9157848 320 self->packet_filter);
97bde5c4
DV		 321 if (err < 0)
322 goto err_exit;
323
324 for (i = 0U, aq_vec = self->aq_vec[0];
325 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
326 err = aq_vec_start(aq_vec);
327 if (err < 0)
328 goto err_exit;
329 }
330
8fcb98f4 331 err = self->aq_hw_ops->hw_start(self->aq_hw);
97bde5c4
DV		 332 if (err < 0)
333 goto err_exit;
334
b82ee71a
IR		 335 err = aq_nic_update_interrupt_moderation_settings(self);
336 if (err)
97bde5c4 337 goto err_exit;
e99e88a9 338 timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
97bde5c4 339 mod_timer(&self->service_timer, jiffies +
e9157848 340 AQ_CFG_SERVICE_TIMER_INTERVAL);
97bde5c4
DV		 341
342 if (self->aq_nic_cfg.is_polling) {
e99e88a9 343 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
97bde5c4
DV		 344 mod_timer(&self->polling_timer, jiffies +
345 AQ_CFG_POLLING_TIMER_INTERVAL);
346 } else {
347 for (i = 0U, aq_vec = self->aq_vec[0];
348 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
23ee07ad 349 err = aq_pci_func_alloc_irq(self, i,
97bde5c4 350 self->ndev->name, aq_vec,
23ee07ad 351 aq_vec_get_affinity_mask(aq_vec));
97bde5c4
DV		 352 if (err < 0)
353 goto err_exit;
354 }
355
8fcb98f4 356 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
e9157848 357 AQ_CFG_IRQ_MASK);
97bde5c4
DV		 358 if (err < 0)
359 goto err_exit;
360 }
361
97bde5c4
DV		 362 err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
363 if (err < 0)
364 goto err_exit;
365
366 err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
367 if (err < 0)
368 goto err_exit;
369
3aec6412
IR		 370 netif_tx_start_all_queues(self->ndev);
371
97bde5c4
DV		 372err_exit:
373 return err;
374}
375
e399553d
PB		 376static unsigned int aq_nic_map_skb(struct aq_nic_s *self,
377 struct sk_buff *skb,
378 struct aq_ring_s *ring)
97bde5c4
DV		 379{
380 unsigned int ret = 0U;
381 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
382 unsigned int frag_count = 0U;
e399553d 383 unsigned int dx = ring->sw_tail;
c7545689 384 struct aq_ring_buff_s *first = NULL;
e399553d 385 struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx];
97bde5c4 386
e399553d
PB		 387 if (unlikely(skb_is_gso(skb))) {
388 dx_buff->flags = 0U;
389 dx_buff->len_pkt = skb->len;
390 dx_buff->len_l2 = ETH_HLEN;
391 dx_buff->len_l3 = ip_hdrlen(skb);
392 dx_buff->len_l4 = tcp_hdrlen(skb);
393 dx_buff->mss = skb_shinfo(skb)->gso_size;
394 dx_buff->is_txc = 1U;
c7545689 395 dx_buff->eop_index = 0xffffU;
e399553d 396
386aff88
PB		 397 dx_buff->is_ipv6 =
398 (ip_hdr(skb)->version == 6) ? 1U : 0U;
399
e399553d
PB		 400 dx = aq_ring_next_dx(ring, dx);
401 dx_buff = &ring->buff_ring[dx];
402 ++ret;
403 }
404
405 dx_buff->flags = 0U;
406 dx_buff->len = skb_headlen(skb);
407 dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
408 skb->data,
409 dx_buff->len,
410 DMA_TO_DEVICE);
97bde5c4 411
e399553d
PB		 412 if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa)))
413 goto exit;
414
c7545689 415 first = dx_buff;
e399553d
PB		 416 dx_buff->len_pkt = skb->len;
417 dx_buff->is_sop = 1U;
418 dx_buff->is_mapped = 1U;
97bde5c4
DV		 419 ++ret;
420
421 if (skb->ip_summed == CHECKSUM_PARTIAL) {
e399553d
PB		 422 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ?
423 1U : 0U;
ea0504f5
PB		 424
425 if (ip_hdr(skb)->version == 4) {
426 dx_buff->is_tcp_cso =
427 (ip_hdr(skb)->protocol == IPPROTO_TCP) ?
428 1U : 0U;
429 dx_buff->is_udp_cso =
430 (ip_hdr(skb)->protocol == IPPROTO_UDP) ?
431 1U : 0U;
432 } else if (ip_hdr(skb)->version == 6) {
433 dx_buff->is_tcp_cso =
434 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ?
435 1U : 0U;
436 dx_buff->is_udp_cso =
437 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ?
438 1U : 0U;
439 }
97bde5c4
DV		 440 }
441
442 for (; nr_frags--; ++frag_count) {
e399553d 443 unsigned int frag_len = 0U;
c7545689
PB		 444 unsigned int buff_offset = 0U;
445 unsigned int buff_size = 0U;
97bde5c4
DV		 446 dma_addr_t frag_pa;
447 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
448
449 frag_len = skb_frag_size(frag);
97bde5c4 450
c7545689
PB		 451 while (frag_len) {
452 if (frag_len > AQ_CFG_TX_FRAME_MAX)
453 buff_size = AQ_CFG_TX_FRAME_MAX;
454 else
455 buff_size = frag_len;
456
457 frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
458 frag,
459 buff_offset,
460 buff_size,
461 DMA_TO_DEVICE);
462
463 if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
464 frag_pa)))
465 goto mapping_error;
e399553d 466
e399553d
PB		 467 dx = aq_ring_next_dx(ring, dx);
468 dx_buff = &ring->buff_ring[dx];
469
470 dx_buff->flags = 0U;
c7545689 471 dx_buff->len = buff_size;
e399553d
PB		 472 dx_buff->pa = frag_pa;
473 dx_buff->is_mapped = 1U;
c7545689
PB		 474 dx_buff->eop_index = 0xffffU;
475
476 frag_len -= buff_size;
477 buff_offset += buff_size;
97bde5c4 478
e399553d 479 ++ret;
97bde5c4 480 }
97bde5c4
DV		 481 }
482
c7545689 483 first->eop_index = dx;
e399553d
PB		 484 dx_buff->is_eop = 1U;
485 dx_buff->skb = skb;
486 goto exit;
487
488mapping_error:
489 for (dx = ring->sw_tail;
490 ret > 0;
491 --ret, dx = aq_ring_next_dx(ring, dx)) {
492 dx_buff = &ring->buff_ring[dx];
493
494 if (!dx_buff->is_txc && dx_buff->pa) {
495 if (unlikely(dx_buff->is_sop)) {
496 dma_unmap_single(aq_nic_get_dev(self),
497 dx_buff->pa,
498 dx_buff->len,
499 DMA_TO_DEVICE);
500 } else {
501 dma_unmap_page(aq_nic_get_dev(self),
502 dx_buff->pa,
503 dx_buff->len,
504 DMA_TO_DEVICE);
505 }
506 }
97bde5c4
DV		 507 }
508
e399553d 509exit:
97bde5c4
DV		 510 return ret;
511}
512
513int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
97bde5c4
DV		 514{
515 struct aq_ring_s *ring = NULL;
516 unsigned int frags = 0U;
517 unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
518 unsigned int tc = 0U;
b350d7b8 519 int err = NETDEV_TX_OK;
97bde5c4
DV		 520
521 frags = skb_shinfo(skb)->nr_frags + 1;
522
523 ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
524
97bde5c4
DV		 525 if (frags > AQ_CFG_SKB_FRAGS_MAX) {
526 dev_kfree_skb_any(skb);
527 goto err_exit;
528 }
529
3aec6412 530 aq_ring_update_queue_state(ring);
97bde5c4 531
3aec6412
IR		 532 /* Above status update may stop the queue. Check this. */
533 if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
97bde5c4
DV		 534 err = NETDEV_TX_BUSY;
535 goto err_exit;
536 }
537
278175ab 538 frags = aq_nic_map_skb(self, skb, ring);
97bde5c4 539
278175ab 540 if (likely(frags)) {
8fcb98f4 541 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
23ee07ad 542 ring, frags);
278175ab 543 if (err >= 0) {
278175ab
PB		 544 ++ring->stats.tx.packets;
545 ring->stats.tx.bytes += skb->len;
546 }
547 } else {
97bde5c4 548 err = NETDEV_TX_BUSY;
97bde5c4
DV		 549 }
550
551err_exit:
97bde5c4
DV		 552 return err;
553}
554
b82ee71a
IR		 555int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
556{
8fcb98f4 557 return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
b82ee71a
IR		 558}
559
97bde5c4
DV		 560int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
561{
562 int err = 0;
563
8fcb98f4 564 err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
97bde5c4
DV		 565 if (err < 0)
566 goto err_exit;
567
568 self->packet_filter = flags;
569
570err_exit:
571 return err;
572}
573
574int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
575{
94b3b542 576 unsigned int packet_filter = self->packet_filter;
97bde5c4
DV		 577 struct netdev_hw_addr *ha = NULL;
578 unsigned int i = 0U;
579
94b3b542
IR		 580 self->mc_list.count = 0;
581 if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
582 packet_filter |= IFF_PROMISC;
583 } else {
584 netdev_for_each_uc_addr(ha, ndev) {
585 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
b21f502f 586
94b3b542
IR		 587 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
588 break;
589 }
97bde5c4
DV		 590 }
591
94b3b542
IR		 592 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
593 packet_filter |= IFF_ALLMULTI;
b21f502f 594 } else {
94b3b542
IR		 595 netdev_for_each_mc_addr(ha, ndev) {
596 ether_addr_copy(self->mc_list.ar[i++], ha->addr);
597
598 if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
599 break;
600 }
601 }
602
bfaa9f85 603 if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
94b3b542
IR		 604 packet_filter |= IFF_MULTICAST;
605 self->mc_list.count = i;
606 self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
607 self->mc_list.ar,
608 self->mc_list.count);
b21f502f 609 }
94b3b542 610 return aq_nic_set_packet_filter(self, packet_filter);
97bde5c4
DV		 611}
612
613int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
614{
97bde5c4
DV		 615 self->aq_nic_cfg.mtu = new_mtu;
616
d85fc17b 617 return 0;
97bde5c4
DV		 618}
619
620int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
621{
8fcb98f4 622 return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
97bde5c4
DV		 623}
624
625unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
626{
627 return self->link_status.mbps;
628}
629
630int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
631{
632 u32 *regs_buff = p;
633 int err = 0;
634
635 regs->version = 1;
636
8fcb98f4
IR		 637 err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
638 self->aq_nic_cfg.aq_hw_caps,
639 regs_buff);
97bde5c4
DV		 640 if (err < 0)
641 goto err_exit;
642
643err_exit:
644 return err;
645}
646
647int aq_nic_get_regs_count(struct aq_nic_s *self)
648{
8fcb98f4 649 return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
97bde5c4
DV		 650}
651
652void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
653{
97bde5c4
DV		 654 unsigned int i = 0U;
655 unsigned int count = 0U;
be08d839 656 struct aq_vec_s *aq_vec = NULL;
8fcb98f4 657 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
97bde5c4 658
be08d839 659 if (!stats)
97bde5c4
DV		 660 goto err_exit;
661
be08d839
IR		 662 data[i] = stats->uprc + stats->mprc + stats->bprc;
663 data[++i] = stats->uprc;
664 data[++i] = stats->mprc;
665 data[++i] = stats->bprc;
666 data[++i] = stats->erpt;
667 data[++i] = stats->uptc + stats->mptc + stats->bptc;
668 data[++i] = stats->uptc;
669 data[++i] = stats->mptc;
670 data[++i] = stats->bptc;
671 data[++i] = stats->ubrc;
672 data[++i] = stats->ubtc;
673 data[++i] = stats->mbrc;
674 data[++i] = stats->mbtc;
675 data[++i] = stats->bbrc;
676 data[++i] = stats->bbtc;
677 data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
678 data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
679 data[++i] = stats->dma_pkt_rc;
680 data[++i] = stats->dma_pkt_tc;
681 data[++i] = stats->dma_oct_rc;
682 data[++i] = stats->dma_oct_tc;
683 data[++i] = stats->dpc;
684
685 i++;
686
687 data += i;
97bde5c4
DV		 688
689 for (i = 0U, aq_vec = self->aq_vec[0];
3013c498 690 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
97bde5c4
DV		 691 data += count;
692 aq_vec_get_sw_stats(aq_vec, data, &count);
693 }
694
695err_exit:;
97bde5c4
DV		 696}
697
9f8a2203
IR		 698static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
699{
700 struct net_device *ndev = self->ndev;
8fcb98f4 701 struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
9f8a2203
IR		 702
703 ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc;
704 ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc;
705 ndev->stats.rx_errors = stats->erpr;
706 ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc;
707 ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc;
708 ndev->stats.tx_errors = stats->erpt;
45cc1c7a 709 ndev->stats.multicast = stats->mprc;
9f8a2203
IR		 710}
711
f8244ab5
PR		 712void aq_nic_get_link_ksettings(struct aq_nic_s *self,
713 struct ethtool_link_ksettings *cmd)
97bde5c4 714{
854ab38c
IR		 715 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
716 cmd->base.port = PORT_FIBRE;
717 else
718 cmd->base.port = PORT_TP;
97bde5c4 719 /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
f8244ab5
PR		 720 cmd->base.duplex = DUPLEX_FULL;
721 cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
722
8f9000a5
PB		 723 ethtool_link_ksettings_zero_link_mode(cmd, supported);
724
8fcb98f4 725 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
8f9000a5
PB		 726 ethtool_link_ksettings_add_link_mode(cmd, supported,
727 10000baseT_Full);
728
8fcb98f4 729 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
8f9000a5
PB		 730 ethtool_link_ksettings_add_link_mode(cmd, supported,
731 5000baseT_Full);
732
8fcb98f4 733 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
8f9000a5
PB		 734 ethtool_link_ksettings_add_link_mode(cmd, supported,
735 2500baseT_Full);
736
8fcb98f4 737 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
8f9000a5
PB		 738 ethtool_link_ksettings_add_link_mode(cmd, supported,
739 1000baseT_Full);
740
8fcb98f4 741 if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
8f9000a5
PB		 742 ethtool_link_ksettings_add_link_mode(cmd, supported,
743 100baseT_Full);
744
8fcb98f4 745 if (self->aq_nic_cfg.aq_hw_caps->flow_control)
8f9000a5
PB		 746 ethtool_link_ksettings_add_link_mode(cmd, supported,
747 Pause);
748
749 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
854ab38c
IR		 750
751 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
752 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
753 else
754 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
8f9000a5
PB		 755
756 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
757
758 if (self->aq_nic_cfg.is_autoneg)
759 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
760
761 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
762 ethtool_link_ksettings_add_link_mode(cmd, advertising,
763 10000baseT_Full);
764
765 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
766 ethtool_link_ksettings_add_link_mode(cmd, advertising,
767 5000baseT_Full);
768
769 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2GS)
770 ethtool_link_ksettings_add_link_mode(cmd, advertising,
771 2500baseT_Full);
772
773 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
774 ethtool_link_ksettings_add_link_mode(cmd, advertising,
775 1000baseT_Full);
776
777 if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
778 ethtool_link_ksettings_add_link_mode(cmd, advertising,
779 100baseT_Full);
780
288551de 781 if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX)
8f9000a5
PB		 782 ethtool_link_ksettings_add_link_mode(cmd, advertising,
783 Pause);
784
35e8e8b4
IR		 785 /* Asym is when either RX or TX, but not both */
786 if (!!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_TX) ^
787 !!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX))
288551de
IR		 788 ethtool_link_ksettings_add_link_mode(cmd, advertising,
789 Asym_Pause);
790
854ab38c
IR		 791 if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
792 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
793 else
794 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
97bde5c4
DV		 795}
796
f8244ab5
PR		 797int aq_nic_set_link_ksettings(struct aq_nic_s *self,
798 const struct ethtool_link_ksettings *cmd)
97bde5c4
DV		 799{
800 u32 speed = 0U;
801 u32 rate = 0U;
802 int err = 0;
803
f8244ab5 804 if (cmd->base.autoneg == AUTONEG_ENABLE) {
8fcb98f4 805 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
97bde5c4
DV		 806 self->aq_nic_cfg.is_autoneg = true;
807 } else {
f8244ab5 808 speed = cmd->base.speed;
97bde5c4
DV		 809
810 switch (speed) {
811 case SPEED_100:
812 rate = AQ_NIC_RATE_100M;
813 break;
814
815 case SPEED_1000:
816 rate = AQ_NIC_RATE_1G;
817 break;
818
819 case SPEED_2500:
820 rate = AQ_NIC_RATE_2GS;
821 break;
822
823 case SPEED_5000:
824 rate = AQ_NIC_RATE_5G;
825 break;
826
827 case SPEED_10000:
828 rate = AQ_NIC_RATE_10G;
829 break;
830
831 default:
832 err = -1;
833 goto err_exit;
834 break;
835 }
8fcb98f4 836 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
97bde5c4
DV		 837 err = -1;
838 goto err_exit;
839 }
840
841 self->aq_nic_cfg.is_autoneg = false;
842 }
843
0c58c35f 844 err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
97bde5c4
DV		 845 if (err < 0)
846 goto err_exit;
847
848 self->aq_nic_cfg.link_speed_msk = rate;
849
850err_exit:
851 return err;
852}
853
854struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
855{
856 return &self->aq_nic_cfg;
857}
858
859u32 aq_nic_get_fw_version(struct aq_nic_s *self)
860{
861 u32 fw_version = 0U;
862
8fcb98f4 863 self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
97bde5c4
DV		 864
865 return fw_version;
866}
867
868int aq_nic_stop(struct aq_nic_s *self)
869{
870 struct aq_vec_s *aq_vec = NULL;
871 unsigned int i = 0U;
872
3aec6412 873 netif_tx_disable(self->ndev);
93d87b8f 874 netif_carrier_off(self->ndev);
97bde5c4
DV		 875
876 del_timer_sync(&self->service_timer);
877
8fcb98f4 878 self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
97bde5c4
DV		 879
880 if (self->aq_nic_cfg.is_polling)
881 del_timer_sync(&self->polling_timer);
882 else
23ee07ad 883 aq_pci_func_free_irqs(self);
97bde5c4
DV		 884
885 for (i = 0U, aq_vec = self->aq_vec[0];
886 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
887 aq_vec_stop(aq_vec);
888
8fcb98f4 889 return self->aq_hw_ops->hw_stop(self->aq_hw);
97bde5c4
DV		 890}
891
892void aq_nic_deinit(struct aq_nic_s *self)
893{
894 struct aq_vec_s *aq_vec = NULL;
895 unsigned int i = 0U;
896
897 if (!self)
898 goto err_exit;
899
900 for (i = 0U, aq_vec = self->aq_vec[0];
901 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
902 aq_vec_deinit(aq_vec);
903
a0da96c0
YE		 904 self->aq_fw_ops->deinit(self->aq_hw);
905
906 if (self->power_state != AQ_HW_POWER_STATE_D0 ||
907 self->aq_hw->aq_nic_cfg->wol) {
908 self->aq_fw_ops->set_power(self->aq_hw,
909 self->power_state,
910 self->ndev->dev_addr);
97bde5c4
DV		 911 }
912
913err_exit:;
914}
915
23ee07ad 916void aq_nic_free_vectors(struct aq_nic_s *self)
97bde5c4
DV		 917{
918 unsigned int i = 0U;
919
920 if (!self)
921 goto err_exit;
922
08b5cf08 923 for (i = ARRAY_SIZE(self->aq_vec); i--;) {
3013c498 924 if (self->aq_vec[i]) {
97bde5c4 925 aq_vec_free(self->aq_vec[i]);
3013c498
PB		 926 self->aq_vec[i] = NULL;
927 }
97bde5c4
DV		 928 }
929
930err_exit:;
931}
932
933int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg)
934{
935 int err = 0;
936
937 if (!netif_running(self->ndev)) {
938 err = 0;
d5919aeb 939 goto out;
97bde5c4
DV		 940 }
941 rtnl_lock();
942 if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) {
943 self->power_state = AQ_HW_POWER_STATE_D3;
944 netif_device_detach(self->ndev);
945 netif_tx_stop_all_queues(self->ndev);
946
947 err = aq_nic_stop(self);
948 if (err < 0)
949 goto err_exit;
950
951 aq_nic_deinit(self);
952 } else {
953 err = aq_nic_init(self);
954 if (err < 0)
955 goto err_exit;
956
957 err = aq_nic_start(self);
958 if (err < 0)
959 goto err_exit;
960
961 netif_device_attach(self->ndev);
962 netif_tx_start_all_queues(self->ndev);
963 }
97bde5c4
DV		 964
965err_exit:
d5919aeb
PB		 966 rtnl_unlock();
967out:
97bde5c4
DV		 968 return err;
969}
90869ddf
IR		 970
971void aq_nic_shutdown(struct aq_nic_s *self)
972{
973 int err = 0;
974
975 if (!self->ndev)
976 return;
977
978 rtnl_lock();
979
980 netif_device_detach(self->ndev);
981
9a11aff2
IR		 982 if (netif_running(self->ndev)) {
983 err = aq_nic_stop(self);
984 if (err < 0)
985 goto err_exit;
986 }
90869ddf
IR		 987 aq_nic_deinit(self);
988
989err_exit:
990 rtnl_unlock();
991}
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