1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Huawei HiNIC PCI Express Linux driver
4 * Copyright(c) 2017 Huawei Technologies Co., Ltd
5 */
6
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/pci.h>
11 #include <linux/device.h>
12 #include <linux/errno.h>
13 #include <linux/types.h>
14 #include <linux/etherdevice.h>
15 #include <linux/netdevice.h>
16 #include <linux/slab.h>
17 #include <linux/if_vlan.h>
18 #include <linux/semaphore.h>
19 #include <linux/workqueue.h>
20 #include <net/ip.h>
21 #include <net/devlink.h>
22 #include <linux/bitops.h>
23 #include <linux/bitmap.h>
24 #include <linux/delay.h>
25 #include <linux/err.h>
26
27 #include "hinic_debugfs.h"
28 #include "hinic_hw_qp.h"
29 #include "hinic_hw_dev.h"
30 #include "hinic_devlink.h"
31 #include "hinic_port.h"
32 #include "hinic_tx.h"
33 #include "hinic_rx.h"
34 #include "hinic_dev.h"
35 #include "hinic_sriov.h"
36
37 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
38 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
39 MODULE_LICENSE("GPL");
40
41 static unsigned int tx_weight = 64;
42 module_param(tx_weight, uint, 0644);
43 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
44
45 static unsigned int rx_weight = 64;
46 module_param(rx_weight, uint, 0644);
47 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
48
49 #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822
50 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200
51 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205
52 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210
53 #define HINIC_DEV_ID_VF 0x375e
54
55 #define HINIC_WQ_NAME "hinic_dev"
56
57 #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
58 NETIF_MSG_IFUP | \
59 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
60
61 #define HINIC_LRO_MAX_WQE_NUM_DEFAULT 8
62
63 #define HINIC_LRO_RX_TIMER_DEFAULT 16
64
65 #define work_to_rx_mode_work(work) \
66 container_of(work, struct hinic_rx_mode_work, work)
67
68 #define rx_mode_work_to_nic_dev(rx_mode_work) \
69 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
70
71 #define HINIC_WAIT_SRIOV_CFG_TIMEOUT 15000
72
73 #define HINIC_DEAULT_TXRX_MSIX_PENDING_LIMIT 2
74 #define HINIC_DEAULT_TXRX_MSIX_COALESC_TIMER_CFG 32
75 #define HINIC_DEAULT_TXRX_MSIX_RESEND_TIMER_CFG 7
76
77 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
78
79 static int set_features(struct hinic_dev *nic_dev,
80 netdev_features_t pre_features,
81 netdev_features_t features, bool force_change);
82
gather_rx_stats(struct hinic_rxq_stats * nic_rx_stats,struct hinic_rxq * rxq)83 static void gather_rx_stats(struct hinic_rxq_stats *nic_rx_stats, struct hinic_rxq *rxq)
84 {
85 struct hinic_rxq_stats rx_stats;
86
87 hinic_rxq_get_stats(rxq, &rx_stats);
88
89 nic_rx_stats->bytes += rx_stats.bytes;
90 nic_rx_stats->pkts += rx_stats.pkts;
91 nic_rx_stats->errors += rx_stats.errors;
92 nic_rx_stats->csum_errors += rx_stats.csum_errors;
93 nic_rx_stats->other_errors += rx_stats.other_errors;
94 }
95
gather_tx_stats(struct hinic_txq_stats * nic_tx_stats,struct hinic_txq * txq)96 static void gather_tx_stats(struct hinic_txq_stats *nic_tx_stats, struct hinic_txq *txq)
97 {
98 struct hinic_txq_stats tx_stats;
99
100 hinic_txq_get_stats(txq, &tx_stats);
101
102 nic_tx_stats->bytes += tx_stats.bytes;
103 nic_tx_stats->pkts += tx_stats.pkts;
104 nic_tx_stats->tx_busy += tx_stats.tx_busy;
105 nic_tx_stats->tx_wake += tx_stats.tx_wake;
106 nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
107 nic_tx_stats->big_frags_pkts += tx_stats.big_frags_pkts;
108 }
109
gather_nic_stats(struct hinic_dev * nic_dev,struct hinic_rxq_stats * nic_rx_stats,struct hinic_txq_stats * nic_tx_stats)110 static void gather_nic_stats(struct hinic_dev *nic_dev,
111 struct hinic_rxq_stats *nic_rx_stats,
112 struct hinic_txq_stats *nic_tx_stats)
113 {
114 int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
115
116 for (i = 0; i < num_qps; i++)
117 gather_rx_stats(nic_rx_stats, &nic_dev->rxqs[i]);
118
119 for (i = 0; i < num_qps; i++)
120 gather_tx_stats(nic_tx_stats, &nic_dev->txqs[i]);
121 }
122
123 /**
124 * create_txqs - Create the Logical Tx Queues of specific NIC device
125 * @nic_dev: the specific NIC device
126 *
127 * Return 0 - Success, negative - Failure
128 **/
create_txqs(struct hinic_dev * nic_dev)129 static int create_txqs(struct hinic_dev *nic_dev)
130 {
131 int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
132 struct net_device *netdev = nic_dev->netdev;
133
134 if (nic_dev->txqs)
135 return -EINVAL;
136
137 nic_dev->txqs = devm_kcalloc(&netdev->dev, num_txqs,
138 sizeof(*nic_dev->txqs), GFP_KERNEL);
139 if (!nic_dev->txqs)
140 return -ENOMEM;
141
142 hinic_sq_dbgfs_init(nic_dev);
143
144 for (i = 0; i < num_txqs; i++) {
145 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
146
147 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
148 if (err) {
149 netif_err(nic_dev, drv, netdev,
150 "Failed to init Txq\n");
151 goto err_init_txq;
152 }
153
154 err = hinic_sq_debug_add(nic_dev, i);
155 if (err) {
156 netif_err(nic_dev, drv, netdev,
157 "Failed to add SQ%d debug\n", i);
158 goto err_add_sq_dbg;
159 }
160 }
161
162 return 0;
163
164 err_add_sq_dbg:
165 hinic_clean_txq(&nic_dev->txqs[i]);
166 err_init_txq:
167 for (j = 0; j < i; j++) {
168 hinic_sq_debug_rem(nic_dev->txqs[j].sq);
169 hinic_clean_txq(&nic_dev->txqs[j]);
170 }
171
172 hinic_sq_dbgfs_uninit(nic_dev);
173
174 devm_kfree(&netdev->dev, nic_dev->txqs);
175 return err;
176 }
177
enable_txqs_napi(struct hinic_dev * nic_dev)178 static void enable_txqs_napi(struct hinic_dev *nic_dev)
179 {
180 int num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
181 int i;
182
183 for (i = 0; i < num_txqs; i++)
184 napi_enable(&nic_dev->txqs[i].napi);
185 }
186
disable_txqs_napi(struct hinic_dev * nic_dev)187 static void disable_txqs_napi(struct hinic_dev *nic_dev)
188 {
189 int num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
190 int i;
191
192 for (i = 0; i < num_txqs; i++)
193 napi_disable(&nic_dev->txqs[i].napi);
194 }
195
196 /**
197 * free_txqs - Free the Logical Tx Queues of specific NIC device
198 * @nic_dev: the specific NIC device
199 **/
free_txqs(struct hinic_dev * nic_dev)200 static void free_txqs(struct hinic_dev *nic_dev)
201 {
202 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
203 struct net_device *netdev = nic_dev->netdev;
204
205 if (!nic_dev->txqs)
206 return;
207
208 for (i = 0; i < num_txqs; i++) {
209 hinic_sq_debug_rem(nic_dev->txqs[i].sq);
210 hinic_clean_txq(&nic_dev->txqs[i]);
211 }
212
213 hinic_sq_dbgfs_uninit(nic_dev);
214
215 devm_kfree(&netdev->dev, nic_dev->txqs);
216 nic_dev->txqs = NULL;
217 }
218
219 /**
220 * create_rxqs - Create the Logical Rx Queues of specific NIC device
221 * @nic_dev: the specific NIC device
222 *
223 * Return 0 - Success, negative - Failure
224 **/
create_rxqs(struct hinic_dev * nic_dev)225 static int create_rxqs(struct hinic_dev *nic_dev)
226 {
227 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
228 struct net_device *netdev = nic_dev->netdev;
229
230 if (nic_dev->rxqs)
231 return -EINVAL;
232
233 nic_dev->rxqs = devm_kcalloc(&netdev->dev, num_rxqs,
234 sizeof(*nic_dev->rxqs), GFP_KERNEL);
235 if (!nic_dev->rxqs)
236 return -ENOMEM;
237
238 hinic_rq_dbgfs_init(nic_dev);
239
240 for (i = 0; i < num_rxqs; i++) {
241 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
242
243 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
244 if (err) {
245 netif_err(nic_dev, drv, netdev,
246 "Failed to init rxq\n");
247 goto err_init_rxq;
248 }
249
250 err = hinic_rq_debug_add(nic_dev, i);
251 if (err) {
252 netif_err(nic_dev, drv, netdev,
253 "Failed to add RQ%d debug\n", i);
254 goto err_add_rq_dbg;
255 }
256 }
257
258 return 0;
259
260 err_add_rq_dbg:
261 hinic_clean_rxq(&nic_dev->rxqs[i]);
262 err_init_rxq:
263 for (j = 0; j < i; j++) {
264 hinic_rq_debug_rem(nic_dev->rxqs[j].rq);
265 hinic_clean_rxq(&nic_dev->rxqs[j]);
266 }
267
268 hinic_rq_dbgfs_uninit(nic_dev);
269
270 devm_kfree(&netdev->dev, nic_dev->rxqs);
271 return err;
272 }
273
274 /**
275 * free_rxqs - Free the Logical Rx Queues of specific NIC device
276 * @nic_dev: the specific NIC device
277 **/
free_rxqs(struct hinic_dev * nic_dev)278 static void free_rxqs(struct hinic_dev *nic_dev)
279 {
280 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
281 struct net_device *netdev = nic_dev->netdev;
282
283 if (!nic_dev->rxqs)
284 return;
285
286 for (i = 0; i < num_rxqs; i++) {
287 hinic_rq_debug_rem(nic_dev->rxqs[i].rq);
288 hinic_clean_rxq(&nic_dev->rxqs[i]);
289 }
290
291 hinic_rq_dbgfs_uninit(nic_dev);
292
293 devm_kfree(&netdev->dev, nic_dev->rxqs);
294 nic_dev->rxqs = NULL;
295 }
296
hinic_configure_max_qnum(struct hinic_dev * nic_dev)297 static int hinic_configure_max_qnum(struct hinic_dev *nic_dev)
298 {
299 return hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps);
300 }
301
hinic_rss_init(struct hinic_dev * nic_dev)302 static int hinic_rss_init(struct hinic_dev *nic_dev)
303 {
304 u8 default_rss_key[HINIC_RSS_KEY_SIZE];
305 u8 tmpl_idx = nic_dev->rss_tmpl_idx;
306 u32 *indir_tbl;
307 int err, i;
308
309 indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL);
310 if (!indir_tbl)
311 return -ENOMEM;
312
313 netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key));
314 for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++)
315 indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss);
316
317 err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key);
318 if (err)
319 goto out;
320
321 err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl);
322 if (err)
323 goto out;
324
325 err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type);
326 if (err)
327 goto out;
328
329 err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx,
330 nic_dev->rss_hash_engine);
331 if (err)
332 goto out;
333
334 err = hinic_rss_cfg(nic_dev, 1, tmpl_idx);
335 if (err)
336 goto out;
337
338 out:
339 kfree(indir_tbl);
340 return err;
341 }
342
hinic_rss_deinit(struct hinic_dev * nic_dev)343 static void hinic_rss_deinit(struct hinic_dev *nic_dev)
344 {
345 hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx);
346 }
347
hinic_init_rss_parameters(struct hinic_dev * nic_dev)348 static void hinic_init_rss_parameters(struct hinic_dev *nic_dev)
349 {
350 nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR;
351 nic_dev->rss_type.tcp_ipv6_ext = 1;
352 nic_dev->rss_type.ipv6_ext = 1;
353 nic_dev->rss_type.tcp_ipv6 = 1;
354 nic_dev->rss_type.ipv6 = 1;
355 nic_dev->rss_type.tcp_ipv4 = 1;
356 nic_dev->rss_type.ipv4 = 1;
357 nic_dev->rss_type.udp_ipv6 = 1;
358 nic_dev->rss_type.udp_ipv4 = 1;
359 }
360
hinic_enable_rss(struct hinic_dev * nic_dev)361 static void hinic_enable_rss(struct hinic_dev *nic_dev)
362 {
363 struct net_device *netdev = nic_dev->netdev;
364 struct hinic_hwdev *hwdev = nic_dev->hwdev;
365 struct hinic_hwif *hwif = hwdev->hwif;
366 struct pci_dev *pdev = hwif->pdev;
367 int i, node, err = 0;
368 u16 num_cpus = 0;
369
370 if (nic_dev->max_qps <= 1) {
371 nic_dev->flags &= ~HINIC_RSS_ENABLE;
372 nic_dev->rss_limit = nic_dev->max_qps;
373 nic_dev->num_qps = nic_dev->max_qps;
374 nic_dev->num_rss = nic_dev->max_qps;
375
376 return;
377 }
378
379 err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx);
380 if (err) {
381 netif_err(nic_dev, drv, netdev,
382 "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n");
383 nic_dev->flags &= ~HINIC_RSS_ENABLE;
384 nic_dev->max_qps = 1;
385 nic_dev->rss_limit = nic_dev->max_qps;
386 nic_dev->num_qps = nic_dev->max_qps;
387 nic_dev->num_rss = nic_dev->max_qps;
388
389 return;
390 }
391
392 nic_dev->flags |= HINIC_RSS_ENABLE;
393
394 for (i = 0; i < num_online_cpus(); i++) {
395 node = cpu_to_node(i);
396 if (node == dev_to_node(&pdev->dev))
397 num_cpus++;
398 }
399
400 if (!num_cpus)
401 num_cpus = num_online_cpus();
402
403 nic_dev->num_qps = hinic_hwdev_num_qps(hwdev);
404 nic_dev->num_qps = min_t(u16, nic_dev->num_qps, num_cpus);
405
406 nic_dev->rss_limit = nic_dev->num_qps;
407 nic_dev->num_rss = nic_dev->num_qps;
408
409 hinic_init_rss_parameters(nic_dev);
410 err = hinic_rss_init(nic_dev);
411 if (err)
412 netif_err(nic_dev, drv, netdev, "Failed to init rss\n");
413 }
414
hinic_open(struct net_device * netdev)415 int hinic_open(struct net_device *netdev)
416 {
417 struct hinic_dev *nic_dev = netdev_priv(netdev);
418 enum hinic_port_link_state link_state;
419 int err, ret;
420
421 if (!(nic_dev->flags & HINIC_INTF_UP)) {
422 err = hinic_hwdev_ifup(nic_dev->hwdev, nic_dev->sq_depth,
423 nic_dev->rq_depth);
424 if (err) {
425 netif_err(nic_dev, drv, netdev,
426 "Failed - HW interface up\n");
427 return err;
428 }
429 }
430
431 err = create_txqs(nic_dev);
432 if (err) {
433 netif_err(nic_dev, drv, netdev,
434 "Failed to create Tx queues\n");
435 goto err_create_txqs;
436 }
437
438 enable_txqs_napi(nic_dev);
439
440 err = create_rxqs(nic_dev);
441 if (err) {
442 netif_err(nic_dev, drv, netdev,
443 "Failed to create Rx queues\n");
444 goto err_create_rxqs;
445 }
446
447 hinic_enable_rss(nic_dev);
448
449 err = hinic_configure_max_qnum(nic_dev);
450 if (err) {
451 netif_err(nic_dev, drv, nic_dev->netdev,
452 "Failed to configure the maximum number of queues\n");
453 goto err_port_state;
454 }
455
456 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps);
457 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps);
458
459 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
460 if (err) {
461 netif_err(nic_dev, drv, netdev,
462 "Failed to set port state\n");
463 goto err_port_state;
464 }
465
466 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
467 if (err) {
468 netif_err(nic_dev, drv, netdev,
469 "Failed to set func port state\n");
470 goto err_func_port_state;
471 }
472
473 down(&nic_dev->mgmt_lock);
474
475 err = hinic_port_link_state(nic_dev, &link_state);
476 if (err) {
477 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
478 goto err_port_link;
479 }
480
481 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
482 hinic_notify_all_vfs_link_changed(nic_dev->hwdev, link_state);
483
484 if (link_state == HINIC_LINK_STATE_UP) {
485 nic_dev->flags |= HINIC_LINK_UP;
486 nic_dev->cable_unplugged = false;
487 nic_dev->module_unrecognized = false;
488 }
489
490 nic_dev->flags |= HINIC_INTF_UP;
491
492 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
493 (HINIC_LINK_UP | HINIC_INTF_UP)) {
494 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
495 netif_carrier_on(netdev);
496 netif_tx_wake_all_queues(netdev);
497 }
498
499 up(&nic_dev->mgmt_lock);
500
501 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
502 return 0;
503
504 err_port_link:
505 up(&nic_dev->mgmt_lock);
506 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
507 if (ret)
508 netif_warn(nic_dev, drv, netdev,
509 "Failed to revert func port state\n");
510
511 err_func_port_state:
512 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
513 if (ret)
514 netif_warn(nic_dev, drv, netdev,
515 "Failed to revert port state\n");
516 err_port_state:
517 free_rxqs(nic_dev);
518 if (nic_dev->flags & HINIC_RSS_ENABLE) {
519 hinic_rss_deinit(nic_dev);
520 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
521 }
522
523 err_create_rxqs:
524 disable_txqs_napi(nic_dev);
525 free_txqs(nic_dev);
526
527 err_create_txqs:
528 if (!(nic_dev->flags & HINIC_INTF_UP))
529 hinic_hwdev_ifdown(nic_dev->hwdev);
530 return err;
531 }
532
hinic_close(struct net_device * netdev)533 int hinic_close(struct net_device *netdev)
534 {
535 struct hinic_dev *nic_dev = netdev_priv(netdev);
536 unsigned int flags;
537
538 /* Disable txq napi firstly to aviod rewaking txq in free_tx_poll */
539 disable_txqs_napi(nic_dev);
540
541 down(&nic_dev->mgmt_lock);
542
543 flags = nic_dev->flags;
544 nic_dev->flags &= ~HINIC_INTF_UP;
545
546 netif_carrier_off(netdev);
547 netif_tx_disable(netdev);
548
549 up(&nic_dev->mgmt_lock);
550
551 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
552 hinic_notify_all_vfs_link_changed(nic_dev->hwdev, 0);
553
554 hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
555
556 hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
557
558 if (nic_dev->flags & HINIC_RSS_ENABLE) {
559 hinic_rss_deinit(nic_dev);
560 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
561 }
562
563 free_rxqs(nic_dev);
564 free_txqs(nic_dev);
565
566 if (flags & HINIC_INTF_UP)
567 hinic_hwdev_ifdown(nic_dev->hwdev);
568
569 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
570 return 0;
571 }
572
hinic_change_mtu(struct net_device * netdev,int new_mtu)573 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
574 {
575 struct hinic_dev *nic_dev = netdev_priv(netdev);
576 int err;
577
578 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
579
580 err = hinic_port_set_mtu(nic_dev, new_mtu);
581 if (err)
582 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
583 else
584 netdev->mtu = new_mtu;
585
586 return err;
587 }
588
589 /**
590 * change_mac_addr - change the main mac address of network device
591 * @netdev: network device
592 * @addr: mac address to set
593 *
594 * Return 0 - Success, negative - Failure
595 **/
change_mac_addr(struct net_device * netdev,const u8 * addr)596 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
597 {
598 struct hinic_dev *nic_dev = netdev_priv(netdev);
599 u16 vid = 0;
600 int err;
601
602 if (!is_valid_ether_addr(addr))
603 return -EADDRNOTAVAIL;
604
605 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
606 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
607
608 down(&nic_dev->mgmt_lock);
609
610 do {
611 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
612 if (err) {
613 netif_err(nic_dev, drv, netdev,
614 "Failed to delete mac\n");
615 break;
616 }
617
618 err = hinic_port_add_mac(nic_dev, addr, vid);
619 if (err) {
620 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
621 break;
622 }
623
624 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
625 } while (vid != VLAN_N_VID);
626
627 up(&nic_dev->mgmt_lock);
628 return err;
629 }
630
hinic_set_mac_addr(struct net_device * netdev,void * addr)631 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
632 {
633 unsigned char new_mac[ETH_ALEN];
634 struct sockaddr *saddr = addr;
635 int err;
636
637 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
638
639 err = change_mac_addr(netdev, new_mac);
640 if (!err)
641 eth_hw_addr_set(netdev, new_mac);
642
643 return err;
644 }
645
646 /**
647 * add_mac_addr - add mac address to network device
648 * @netdev: network device
649 * @addr: mac address to add
650 *
651 * Return 0 - Success, negative - Failure
652 **/
add_mac_addr(struct net_device * netdev,const u8 * addr)653 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
654 {
655 struct hinic_dev *nic_dev = netdev_priv(netdev);
656 u16 vid = 0;
657 int err;
658
659 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
660 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
661
662 down(&nic_dev->mgmt_lock);
663
664 do {
665 err = hinic_port_add_mac(nic_dev, addr, vid);
666 if (err) {
667 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
668 break;
669 }
670
671 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
672 } while (vid != VLAN_N_VID);
673
674 up(&nic_dev->mgmt_lock);
675 return err;
676 }
677
678 /**
679 * remove_mac_addr - remove mac address from network device
680 * @netdev: network device
681 * @addr: mac address to remove
682 *
683 * Return 0 - Success, negative - Failure
684 **/
remove_mac_addr(struct net_device * netdev,const u8 * addr)685 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
686 {
687 struct hinic_dev *nic_dev = netdev_priv(netdev);
688 u16 vid = 0;
689 int err;
690
691 if (!is_valid_ether_addr(addr))
692 return -EADDRNOTAVAIL;
693
694 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
695 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
696
697 down(&nic_dev->mgmt_lock);
698
699 do {
700 err = hinic_port_del_mac(nic_dev, addr, vid);
701 if (err) {
702 netif_err(nic_dev, drv, netdev,
703 "Failed to delete mac\n");
704 break;
705 }
706
707 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
708 } while (vid != VLAN_N_VID);
709
710 up(&nic_dev->mgmt_lock);
711 return err;
712 }
713
hinic_vlan_rx_add_vid(struct net_device * netdev,__always_unused __be16 proto,u16 vid)714 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
715 __always_unused __be16 proto, u16 vid)
716 {
717 struct hinic_dev *nic_dev = netdev_priv(netdev);
718 int ret, err;
719
720 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
721
722 down(&nic_dev->mgmt_lock);
723
724 err = hinic_port_add_vlan(nic_dev, vid);
725 if (err) {
726 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
727 goto err_vlan_add;
728 }
729
730 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
731 if (err && err != HINIC_PF_SET_VF_ALREADY) {
732 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
733 goto err_add_mac;
734 }
735
736 bitmap_set(nic_dev->vlan_bitmap, vid, 1);
737
738 up(&nic_dev->mgmt_lock);
739 return 0;
740
741 err_add_mac:
742 ret = hinic_port_del_vlan(nic_dev, vid);
743 if (ret)
744 netif_err(nic_dev, drv, netdev,
745 "Failed to revert by removing vlan\n");
746
747 err_vlan_add:
748 up(&nic_dev->mgmt_lock);
749 return err;
750 }
751
hinic_vlan_rx_kill_vid(struct net_device * netdev,__always_unused __be16 proto,u16 vid)752 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
753 __always_unused __be16 proto, u16 vid)
754 {
755 struct hinic_dev *nic_dev = netdev_priv(netdev);
756 int err;
757
758 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
759
760 down(&nic_dev->mgmt_lock);
761
762 err = hinic_port_del_vlan(nic_dev, vid);
763 if (err) {
764 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
765 goto err_del_vlan;
766 }
767
768 bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
769
770 up(&nic_dev->mgmt_lock);
771 return 0;
772
773 err_del_vlan:
774 up(&nic_dev->mgmt_lock);
775 return err;
776 }
777
set_rx_mode(struct work_struct * work)778 static void set_rx_mode(struct work_struct *work)
779 {
780 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
781 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
782
783 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
784
785 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
786 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
787 }
788
hinic_set_rx_mode(struct net_device * netdev)789 static void hinic_set_rx_mode(struct net_device *netdev)
790 {
791 struct hinic_dev *nic_dev = netdev_priv(netdev);
792 struct hinic_rx_mode_work *rx_mode_work;
793 u32 rx_mode;
794
795 rx_mode_work = &nic_dev->rx_mode_work;
796
797 rx_mode = HINIC_RX_MODE_UC |
798 HINIC_RX_MODE_MC |
799 HINIC_RX_MODE_BC;
800
801 if (netdev->flags & IFF_PROMISC) {
802 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
803 rx_mode |= HINIC_RX_MODE_PROMISC;
804 } else if (netdev->flags & IFF_ALLMULTI) {
805 rx_mode |= HINIC_RX_MODE_MC_ALL;
806 }
807
808 rx_mode_work->rx_mode = rx_mode;
809
810 queue_work(nic_dev->workq, &rx_mode_work->work);
811 }
812
hinic_tx_timeout(struct net_device * netdev,unsigned int txqueue)813 static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
814 {
815 struct hinic_dev *nic_dev = netdev_priv(netdev);
816 u16 sw_pi, hw_ci, sw_ci;
817 struct hinic_sq *sq;
818 u16 num_sqs, q_id;
819
820 num_sqs = hinic_hwdev_num_qps(nic_dev->hwdev);
821
822 netif_err(nic_dev, drv, netdev, "Tx timeout\n");
823
824 for (q_id = 0; q_id < num_sqs; q_id++) {
825 if (!netif_xmit_stopped(netdev_get_tx_queue(netdev, q_id)))
826 continue;
827
828 sq = hinic_hwdev_get_sq(nic_dev->hwdev, q_id);
829 sw_pi = atomic_read(&sq->wq->prod_idx) & sq->wq->mask;
830 hw_ci = be16_to_cpu(*(u16 *)(sq->hw_ci_addr)) & sq->wq->mask;
831 sw_ci = atomic_read(&sq->wq->cons_idx) & sq->wq->mask;
832 netif_err(nic_dev, drv, netdev, "Txq%d: sw_pi: %d, hw_ci: %d, sw_ci: %d, napi->state: 0x%lx\n",
833 q_id, sw_pi, hw_ci, sw_ci,
834 nic_dev->txqs[q_id].napi.state);
835 }
836 }
837
hinic_get_stats64(struct net_device * netdev,struct rtnl_link_stats64 * stats)838 static void hinic_get_stats64(struct net_device *netdev,
839 struct rtnl_link_stats64 *stats)
840 {
841 struct hinic_dev *nic_dev = netdev_priv(netdev);
842 struct hinic_rxq_stats nic_rx_stats = {};
843 struct hinic_txq_stats nic_tx_stats = {};
844
845 if (nic_dev->flags & HINIC_INTF_UP)
846 gather_nic_stats(nic_dev, &nic_rx_stats, &nic_tx_stats);
847
848 stats->rx_bytes = nic_rx_stats.bytes;
849 stats->rx_packets = nic_rx_stats.pkts;
850 stats->rx_errors = nic_rx_stats.errors;
851
852 stats->tx_bytes = nic_tx_stats.bytes;
853 stats->tx_packets = nic_tx_stats.pkts;
854 stats->tx_errors = nic_tx_stats.tx_dropped;
855 }
856
hinic_set_features(struct net_device * netdev,netdev_features_t features)857 static int hinic_set_features(struct net_device *netdev,
858 netdev_features_t features)
859 {
860 struct hinic_dev *nic_dev = netdev_priv(netdev);
861
862 return set_features(nic_dev, nic_dev->netdev->features,
863 features, false);
864 }
865
hinic_fix_features(struct net_device * netdev,netdev_features_t features)866 static netdev_features_t hinic_fix_features(struct net_device *netdev,
867 netdev_features_t features)
868 {
869 struct hinic_dev *nic_dev = netdev_priv(netdev);
870
871 /* If Rx checksum is disabled, then LRO should also be disabled */
872 if (!(features & NETIF_F_RXCSUM)) {
873 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n");
874 features &= ~NETIF_F_LRO;
875 }
876
877 return features;
878 }
879
880 static const struct net_device_ops hinic_netdev_ops = {
881 .ndo_open = hinic_open,
882 .ndo_stop = hinic_close,
883 .ndo_change_mtu = hinic_change_mtu,
884 .ndo_set_mac_address = hinic_set_mac_addr,
885 .ndo_validate_addr = eth_validate_addr,
886 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
887 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
888 .ndo_set_rx_mode = hinic_set_rx_mode,
889 .ndo_start_xmit = hinic_xmit_frame,
890 .ndo_tx_timeout = hinic_tx_timeout,
891 .ndo_get_stats64 = hinic_get_stats64,
892 .ndo_fix_features = hinic_fix_features,
893 .ndo_set_features = hinic_set_features,
894 .ndo_set_vf_mac = hinic_ndo_set_vf_mac,
895 .ndo_set_vf_vlan = hinic_ndo_set_vf_vlan,
896 .ndo_get_vf_config = hinic_ndo_get_vf_config,
897 .ndo_set_vf_trust = hinic_ndo_set_vf_trust,
898 .ndo_set_vf_rate = hinic_ndo_set_vf_bw,
899 .ndo_set_vf_spoofchk = hinic_ndo_set_vf_spoofchk,
900 .ndo_set_vf_link_state = hinic_ndo_set_vf_link_state,
901 };
902
903 static const struct net_device_ops hinicvf_netdev_ops = {
904 .ndo_open = hinic_open,
905 .ndo_stop = hinic_close,
906 .ndo_change_mtu = hinic_change_mtu,
907 .ndo_set_mac_address = hinic_set_mac_addr,
908 .ndo_validate_addr = eth_validate_addr,
909 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
910 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
911 .ndo_set_rx_mode = hinic_set_rx_mode,
912 .ndo_start_xmit = hinic_xmit_frame,
913 .ndo_tx_timeout = hinic_tx_timeout,
914 .ndo_get_stats64 = hinic_get_stats64,
915 .ndo_fix_features = hinic_fix_features,
916 .ndo_set_features = hinic_set_features,
917 };
918
netdev_features_init(struct net_device * netdev)919 static void netdev_features_init(struct net_device *netdev)
920 {
921 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
922 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
923 NETIF_F_RXCSUM | NETIF_F_LRO |
924 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
925 NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM;
926
927 netdev->vlan_features = netdev->hw_features;
928
929 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
930
931 netdev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SCTP_CRC |
932 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN |
933 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_UDP_TUNNEL;
934 }
935
hinic_refresh_nic_cfg(struct hinic_dev * nic_dev)936 static void hinic_refresh_nic_cfg(struct hinic_dev *nic_dev)
937 {
938 struct hinic_nic_cfg *nic_cfg = &nic_dev->hwdev->func_to_io.nic_cfg;
939 struct hinic_pause_config pause_info = {0};
940 struct hinic_port_cap port_cap = {0};
941
942 if (hinic_port_get_cap(nic_dev, &port_cap))
943 return;
944
945 mutex_lock(&nic_cfg->cfg_mutex);
946 if (nic_cfg->pause_set || !port_cap.autoneg_state) {
947 nic_cfg->auto_neg = port_cap.autoneg_state;
948 pause_info.auto_neg = nic_cfg->auto_neg;
949 pause_info.rx_pause = nic_cfg->rx_pause;
950 pause_info.tx_pause = nic_cfg->tx_pause;
951 hinic_set_hw_pause_info(nic_dev->hwdev, &pause_info);
952 }
953 mutex_unlock(&nic_cfg->cfg_mutex);
954 }
955
956 /**
957 * link_status_event_handler - link event handler
958 * @handle: nic device for the handler
959 * @buf_in: input buffer
960 * @in_size: input size
961 * @buf_out: output buffer
962 * @out_size: returned output size
963 *
964 * Return 0 - Success, negative - Failure
965 **/
link_status_event_handler(void * handle,void * buf_in,u16 in_size,void * buf_out,u16 * out_size)966 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
967 void *buf_out, u16 *out_size)
968 {
969 struct hinic_port_link_status *link_status, *ret_link_status;
970 struct hinic_dev *nic_dev = handle;
971
972 link_status = buf_in;
973
974 if (link_status->link == HINIC_LINK_STATE_UP) {
975 down(&nic_dev->mgmt_lock);
976
977 nic_dev->flags |= HINIC_LINK_UP;
978 nic_dev->cable_unplugged = false;
979 nic_dev->module_unrecognized = false;
980
981 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
982 (HINIC_LINK_UP | HINIC_INTF_UP)) {
983 netif_carrier_on(nic_dev->netdev);
984 netif_tx_wake_all_queues(nic_dev->netdev);
985 }
986
987 up(&nic_dev->mgmt_lock);
988
989 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
990 hinic_refresh_nic_cfg(nic_dev);
991
992 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
993 } else {
994 down(&nic_dev->mgmt_lock);
995
996 nic_dev->flags &= ~HINIC_LINK_UP;
997
998 netif_carrier_off(nic_dev->netdev);
999 netif_tx_disable(nic_dev->netdev);
1000
1001 up(&nic_dev->mgmt_lock);
1002
1003 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
1004 }
1005
1006 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
1007 hinic_notify_all_vfs_link_changed(nic_dev->hwdev,
1008 link_status->link);
1009
1010 ret_link_status = buf_out;
1011 ret_link_status->status = 0;
1012
1013 *out_size = sizeof(*ret_link_status);
1014 }
1015
cable_plug_event(void * handle,void * buf_in,u16 in_size,void * buf_out,u16 * out_size)1016 static void cable_plug_event(void *handle,
1017 void *buf_in, u16 in_size,
1018 void *buf_out, u16 *out_size)
1019 {
1020 struct hinic_cable_plug_event *plug_event = buf_in;
1021 struct hinic_dev *nic_dev = handle;
1022
1023 nic_dev->cable_unplugged = plug_event->plugged ? false : true;
1024
1025 *out_size = sizeof(*plug_event);
1026 plug_event = buf_out;
1027 plug_event->status = 0;
1028 }
1029
link_err_event(void * handle,void * buf_in,u16 in_size,void * buf_out,u16 * out_size)1030 static void link_err_event(void *handle,
1031 void *buf_in, u16 in_size,
1032 void *buf_out, u16 *out_size)
1033 {
1034 struct hinic_link_err_event *link_err = buf_in;
1035 struct hinic_dev *nic_dev = handle;
1036
1037 if (link_err->err_type >= LINK_ERR_NUM)
1038 netif_info(nic_dev, link, nic_dev->netdev,
1039 "Link failed, Unknown error type: 0x%x\n",
1040 link_err->err_type);
1041 else
1042 nic_dev->module_unrecognized = true;
1043
1044 *out_size = sizeof(*link_err);
1045 link_err = buf_out;
1046 link_err->status = 0;
1047 }
1048
set_features(struct hinic_dev * nic_dev,netdev_features_t pre_features,netdev_features_t features,bool force_change)1049 static int set_features(struct hinic_dev *nic_dev,
1050 netdev_features_t pre_features,
1051 netdev_features_t features, bool force_change)
1052 {
1053 netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
1054 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
1055 netdev_features_t failed_features = 0;
1056 int ret = 0;
1057 int err = 0;
1058
1059 if (changed & NETIF_F_TSO) {
1060 ret = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
1061 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
1062 if (ret) {
1063 err = ret;
1064 failed_features |= NETIF_F_TSO;
1065 }
1066 }
1067
1068 if (changed & NETIF_F_RXCSUM) {
1069 ret = hinic_set_rx_csum_offload(nic_dev, csum_en);
1070 if (ret) {
1071 err = ret;
1072 failed_features |= NETIF_F_RXCSUM;
1073 }
1074 }
1075
1076 if (changed & NETIF_F_LRO) {
1077 ret = hinic_set_rx_lro_state(nic_dev,
1078 !!(features & NETIF_F_LRO),
1079 HINIC_LRO_RX_TIMER_DEFAULT,
1080 HINIC_LRO_MAX_WQE_NUM_DEFAULT);
1081 if (ret) {
1082 err = ret;
1083 failed_features |= NETIF_F_LRO;
1084 }
1085 }
1086
1087 if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
1088 ret = hinic_set_rx_vlan_offload(nic_dev,
1089 !!(features &
1090 NETIF_F_HW_VLAN_CTAG_RX));
1091 if (ret) {
1092 err = ret;
1093 failed_features |= NETIF_F_HW_VLAN_CTAG_RX;
1094 }
1095 }
1096
1097 if (err) {
1098 nic_dev->netdev->features = features ^ failed_features;
1099 return -EIO;
1100 }
1101
1102 return 0;
1103 }
1104
hinic_init_intr_coalesce(struct hinic_dev * nic_dev)1105 static int hinic_init_intr_coalesce(struct hinic_dev *nic_dev)
1106 {
1107 u64 size;
1108 u16 i;
1109
1110 size = sizeof(struct hinic_intr_coal_info) * nic_dev->max_qps;
1111 nic_dev->rx_intr_coalesce = kzalloc(size, GFP_KERNEL);
1112 if (!nic_dev->rx_intr_coalesce)
1113 return -ENOMEM;
1114 nic_dev->tx_intr_coalesce = kzalloc(size, GFP_KERNEL);
1115 if (!nic_dev->tx_intr_coalesce) {
1116 kfree(nic_dev->rx_intr_coalesce);
1117 return -ENOMEM;
1118 }
1119
1120 for (i = 0; i < nic_dev->max_qps; i++) {
1121 nic_dev->rx_intr_coalesce[i].pending_limt =
1122 HINIC_DEAULT_TXRX_MSIX_PENDING_LIMIT;
1123 nic_dev->rx_intr_coalesce[i].coalesce_timer_cfg =
1124 HINIC_DEAULT_TXRX_MSIX_COALESC_TIMER_CFG;
1125 nic_dev->rx_intr_coalesce[i].resend_timer_cfg =
1126 HINIC_DEAULT_TXRX_MSIX_RESEND_TIMER_CFG;
1127 nic_dev->tx_intr_coalesce[i].pending_limt =
1128 HINIC_DEAULT_TXRX_MSIX_PENDING_LIMIT;
1129 nic_dev->tx_intr_coalesce[i].coalesce_timer_cfg =
1130 HINIC_DEAULT_TXRX_MSIX_COALESC_TIMER_CFG;
1131 nic_dev->tx_intr_coalesce[i].resend_timer_cfg =
1132 HINIC_DEAULT_TXRX_MSIX_RESEND_TIMER_CFG;
1133 }
1134
1135 return 0;
1136 }
1137
hinic_free_intr_coalesce(struct hinic_dev * nic_dev)1138 static void hinic_free_intr_coalesce(struct hinic_dev *nic_dev)
1139 {
1140 kfree(nic_dev->tx_intr_coalesce);
1141 kfree(nic_dev->rx_intr_coalesce);
1142 }
1143
1144 /**
1145 * nic_dev_init - Initialize the NIC device
1146 * @pdev: the NIC pci device
1147 *
1148 * Return 0 - Success, negative - Failure
1149 **/
nic_dev_init(struct pci_dev * pdev)1150 static int nic_dev_init(struct pci_dev *pdev)
1151 {
1152 struct hinic_rx_mode_work *rx_mode_work;
1153 struct hinic_dev *nic_dev;
1154 struct net_device *netdev;
1155 struct hinic_hwdev *hwdev;
1156 struct devlink *devlink;
1157 u8 addr[ETH_ALEN];
1158 int err, num_qps;
1159
1160 devlink = hinic_devlink_alloc(&pdev->dev);
1161 if (!devlink) {
1162 dev_err(&pdev->dev, "Hinic devlink alloc failed\n");
1163 return -ENOMEM;
1164 }
1165
1166 hwdev = hinic_init_hwdev(pdev, devlink);
1167 if (IS_ERR(hwdev)) {
1168 dev_err(&pdev->dev, "Failed to initialize HW device\n");
1169 hinic_devlink_free(devlink);
1170 return PTR_ERR(hwdev);
1171 }
1172
1173 num_qps = hinic_hwdev_num_qps(hwdev);
1174 if (num_qps <= 0) {
1175 dev_err(&pdev->dev, "Invalid number of QPS\n");
1176 err = -EINVAL;
1177 goto err_num_qps;
1178 }
1179
1180 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
1181 if (!netdev) {
1182 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
1183 err = -ENOMEM;
1184 goto err_alloc_etherdev;
1185 }
1186
1187 if (!HINIC_IS_VF(hwdev->hwif))
1188 netdev->netdev_ops = &hinic_netdev_ops;
1189 else
1190 netdev->netdev_ops = &hinicvf_netdev_ops;
1191
1192 netdev->max_mtu = ETH_MAX_MTU;
1193
1194 nic_dev = netdev_priv(netdev);
1195 nic_dev->netdev = netdev;
1196 nic_dev->hwdev = hwdev;
1197 nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
1198 nic_dev->flags = 0;
1199 nic_dev->txqs = NULL;
1200 nic_dev->rxqs = NULL;
1201 nic_dev->tx_weight = tx_weight;
1202 nic_dev->rx_weight = rx_weight;
1203 nic_dev->sq_depth = HINIC_SQ_DEPTH;
1204 nic_dev->rq_depth = HINIC_RQ_DEPTH;
1205 nic_dev->sriov_info.hwdev = hwdev;
1206 nic_dev->sriov_info.pdev = pdev;
1207 nic_dev->max_qps = num_qps;
1208 nic_dev->devlink = devlink;
1209
1210 hinic_set_ethtool_ops(netdev);
1211
1212 sema_init(&nic_dev->mgmt_lock, 1);
1213
1214 nic_dev->vlan_bitmap = devm_bitmap_zalloc(&pdev->dev, VLAN_N_VID,
1215 GFP_KERNEL);
1216 if (!nic_dev->vlan_bitmap) {
1217 err = -ENOMEM;
1218 goto err_vlan_bitmap;
1219 }
1220
1221 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
1222 if (!nic_dev->workq) {
1223 err = -ENOMEM;
1224 goto err_workq;
1225 }
1226
1227 pci_set_drvdata(pdev, netdev);
1228
1229 err = hinic_port_get_mac(nic_dev, addr);
1230 if (err) {
1231 dev_err(&pdev->dev, "Failed to get mac address\n");
1232 goto err_get_mac;
1233 }
1234 eth_hw_addr_set(netdev, addr);
1235
1236 if (!is_valid_ether_addr(netdev->dev_addr)) {
1237 if (!HINIC_IS_VF(nic_dev->hwdev->hwif)) {
1238 dev_err(&pdev->dev, "Invalid MAC address\n");
1239 err = -EIO;
1240 goto err_add_mac;
1241 }
1242
1243 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
1244 netdev->dev_addr);
1245 eth_hw_addr_random(netdev);
1246 }
1247
1248 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
1249 if (err && err != HINIC_PF_SET_VF_ALREADY) {
1250 dev_err(&pdev->dev, "Failed to add mac\n");
1251 goto err_add_mac;
1252 }
1253
1254 err = hinic_port_set_mtu(nic_dev, netdev->mtu);
1255 if (err) {
1256 dev_err(&pdev->dev, "Failed to set mtu\n");
1257 goto err_set_mtu;
1258 }
1259
1260 rx_mode_work = &nic_dev->rx_mode_work;
1261 INIT_WORK(&rx_mode_work->work, set_rx_mode);
1262
1263 netdev_features_init(netdev);
1264
1265 netif_carrier_off(netdev);
1266
1267 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
1268 nic_dev, link_status_event_handler);
1269 hinic_hwdev_cb_register(nic_dev->hwdev,
1270 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT,
1271 nic_dev, cable_plug_event);
1272 hinic_hwdev_cb_register(nic_dev->hwdev,
1273 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT,
1274 nic_dev, link_err_event);
1275
1276 err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
1277 if (err)
1278 goto err_set_features;
1279
1280 /* enable pause and disable pfc by default */
1281 err = hinic_dcb_set_pfc(nic_dev->hwdev, 0, 0);
1282 if (err)
1283 goto err_set_pfc;
1284
1285 SET_NETDEV_DEV(netdev, &pdev->dev);
1286
1287 err = hinic_init_intr_coalesce(nic_dev);
1288 if (err) {
1289 dev_err(&pdev->dev, "Failed to init_intr_coalesce\n");
1290 goto err_init_intr;
1291 }
1292
1293 hinic_dbg_init(nic_dev);
1294
1295 hinic_func_tbl_dbgfs_init(nic_dev);
1296
1297 err = hinic_func_table_debug_add(nic_dev);
1298 if (err) {
1299 dev_err(&pdev->dev, "Failed to add func_table debug\n");
1300 goto err_add_func_table_dbg;
1301 }
1302
1303 err = register_netdev(netdev);
1304 if (err) {
1305 dev_err(&pdev->dev, "Failed to register netdev\n");
1306 goto err_reg_netdev;
1307 }
1308
1309 return 0;
1310
1311 err_reg_netdev:
1312 hinic_func_table_debug_rem(nic_dev);
1313 err_add_func_table_dbg:
1314 hinic_func_tbl_dbgfs_uninit(nic_dev);
1315 hinic_dbg_uninit(nic_dev);
1316 hinic_free_intr_coalesce(nic_dev);
1317 err_init_intr:
1318 err_set_pfc:
1319 err_set_features:
1320 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1321 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT);
1322 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1323 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT);
1324 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1325 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1326 cancel_work_sync(&rx_mode_work->work);
1327
1328 err_set_mtu:
1329 hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
1330 err_add_mac:
1331 err_get_mac:
1332 pci_set_drvdata(pdev, NULL);
1333 destroy_workqueue(nic_dev->workq);
1334 err_workq:
1335 err_vlan_bitmap:
1336 free_netdev(netdev);
1337
1338 err_alloc_etherdev:
1339 err_num_qps:
1340 hinic_free_hwdev(hwdev);
1341 hinic_devlink_free(devlink);
1342 return err;
1343 }
1344
hinic_probe(struct pci_dev * pdev,const struct pci_device_id * id)1345 static int hinic_probe(struct pci_dev *pdev,
1346 const struct pci_device_id *id)
1347 {
1348 int err = pci_enable_device(pdev);
1349
1350 if (err)
1351 return dev_err_probe(&pdev->dev, err, "Failed to enable PCI device\n");
1352
1353 err = pci_request_regions(pdev, HINIC_DRV_NAME);
1354 if (err) {
1355 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1356 goto err_pci_regions;
1357 }
1358
1359 pci_set_master(pdev);
1360
1361 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1362 if (err) {
1363 dev_err(&pdev->dev, "Failed to set DMA mask\n");
1364 goto err_dma_mask;
1365 }
1366
1367 err = nic_dev_init(pdev);
1368 if (err) {
1369 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1370 goto err_nic_dev_init;
1371 }
1372
1373 dev_info(&pdev->dev, "HiNIC driver - probed\n");
1374 return 0;
1375
1376 err_nic_dev_init:
1377 err_dma_mask:
1378 pci_release_regions(pdev);
1379
1380 err_pci_regions:
1381 pci_disable_device(pdev);
1382 return err;
1383 }
1384
1385 #define HINIC_WAIT_SRIOV_CFG_TIMEOUT 15000
1386
wait_sriov_cfg_complete(struct hinic_dev * nic_dev)1387 static void wait_sriov_cfg_complete(struct hinic_dev *nic_dev)
1388 {
1389 struct hinic_sriov_info *sriov_info = &nic_dev->sriov_info;
1390 u32 loop_cnt = 0;
1391
1392 set_bit(HINIC_FUNC_REMOVE, &sriov_info->state);
1393 usleep_range(9900, 10000);
1394
1395 while (loop_cnt < HINIC_WAIT_SRIOV_CFG_TIMEOUT) {
1396 if (!test_bit(HINIC_SRIOV_ENABLE, &sriov_info->state) &&
1397 !test_bit(HINIC_SRIOV_DISABLE, &sriov_info->state))
1398 return;
1399
1400 usleep_range(9900, 10000);
1401 loop_cnt++;
1402 }
1403 }
1404
hinic_remove(struct pci_dev * pdev)1405 static void hinic_remove(struct pci_dev *pdev)
1406 {
1407 struct net_device *netdev = pci_get_drvdata(pdev);
1408 struct hinic_dev *nic_dev = netdev_priv(netdev);
1409 struct devlink *devlink = nic_dev->devlink;
1410 struct hinic_rx_mode_work *rx_mode_work;
1411
1412 if (!HINIC_IS_VF(nic_dev->hwdev->hwif)) {
1413 wait_sriov_cfg_complete(nic_dev);
1414 hinic_pci_sriov_disable(pdev);
1415 }
1416
1417 unregister_netdev(netdev);
1418
1419 hinic_func_table_debug_rem(nic_dev);
1420
1421 hinic_func_tbl_dbgfs_uninit(nic_dev);
1422
1423 hinic_dbg_uninit(nic_dev);
1424
1425 hinic_free_intr_coalesce(nic_dev);
1426
1427 hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
1428
1429 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1430 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT);
1431 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1432 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT);
1433 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1434 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1435
1436 rx_mode_work = &nic_dev->rx_mode_work;
1437 cancel_work_sync(&rx_mode_work->work);
1438
1439 pci_set_drvdata(pdev, NULL);
1440
1441 destroy_workqueue(nic_dev->workq);
1442
1443 hinic_free_hwdev(nic_dev->hwdev);
1444
1445 free_netdev(netdev);
1446
1447 hinic_devlink_free(devlink);
1448
1449 pci_release_regions(pdev);
1450 pci_disable_device(pdev);
1451
1452 dev_info(&pdev->dev, "HiNIC driver - removed\n");
1453 }
1454
hinic_shutdown(struct pci_dev * pdev)1455 static void hinic_shutdown(struct pci_dev *pdev)
1456 {
1457 pci_disable_device(pdev);
1458 }
1459
1460 static const struct pci_device_id hinic_pci_table[] = {
1461 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1462 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1463 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1464 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1465 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_VF), 0},
1466 { 0, 0}
1467 };
1468 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1469
1470 static struct pci_driver hinic_driver = {
1471 .name = HINIC_DRV_NAME,
1472 .id_table = hinic_pci_table,
1473 .probe = hinic_probe,
1474 .remove = hinic_remove,
1475 .shutdown = hinic_shutdown,
1476 .sriov_configure = hinic_pci_sriov_configure,
1477 };
1478
hinic_module_init(void)1479 static int __init hinic_module_init(void)
1480 {
1481 hinic_dbg_register_debugfs(HINIC_DRV_NAME);
1482 return pci_register_driver(&hinic_driver);
1483 }
1484
hinic_module_exit(void)1485 static void __exit hinic_module_exit(void)
1486 {
1487 pci_unregister_driver(&hinic_driver);
1488 hinic_dbg_unregister_debugfs();
1489 }
1490
1491 module_init(hinic_module_init);
1492 module_exit(hinic_module_exit);
1493