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 nic_dev->txqs = NULL;
176 return err;
177 }
178
enable_txqs_napi(struct hinic_dev * nic_dev)179 static void enable_txqs_napi(struct hinic_dev *nic_dev)
180 {
181 int num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
182 int i;
183
184 for (i = 0; i < num_txqs; i++)
185 napi_enable(&nic_dev->txqs[i].napi);
186 }
187
disable_txqs_napi(struct hinic_dev * nic_dev)188 static void disable_txqs_napi(struct hinic_dev *nic_dev)
189 {
190 int num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
191 int i;
192
193 for (i = 0; i < num_txqs; i++)
194 napi_disable(&nic_dev->txqs[i].napi);
195 }
196
197 /**
198 * free_txqs - Free the Logical Tx Queues of specific NIC device
199 * @nic_dev: the specific NIC device
200 **/
free_txqs(struct hinic_dev * nic_dev)201 static void free_txqs(struct hinic_dev *nic_dev)
202 {
203 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
204 struct net_device *netdev = nic_dev->netdev;
205
206 if (!nic_dev->txqs)
207 return;
208
209 for (i = 0; i < num_txqs; i++) {
210 hinic_sq_debug_rem(nic_dev->txqs[i].sq);
211 hinic_clean_txq(&nic_dev->txqs[i]);
212 }
213
214 hinic_sq_dbgfs_uninit(nic_dev);
215
216 devm_kfree(&netdev->dev, nic_dev->txqs);
217 nic_dev->txqs = NULL;
218 }
219
220 /**
221 * create_rxqs - Create the Logical Rx Queues of specific NIC device
222 * @nic_dev: the specific NIC device
223 *
224 * Return 0 - Success, negative - Failure
225 **/
create_rxqs(struct hinic_dev * nic_dev)226 static int create_rxqs(struct hinic_dev *nic_dev)
227 {
228 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
229 struct net_device *netdev = nic_dev->netdev;
230
231 if (nic_dev->rxqs)
232 return -EINVAL;
233
234 nic_dev->rxqs = devm_kcalloc(&netdev->dev, num_rxqs,
235 sizeof(*nic_dev->rxqs), GFP_KERNEL);
236 if (!nic_dev->rxqs)
237 return -ENOMEM;
238
239 hinic_rq_dbgfs_init(nic_dev);
240
241 for (i = 0; i < num_rxqs; i++) {
242 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
243
244 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
245 if (err) {
246 netif_err(nic_dev, drv, netdev,
247 "Failed to init rxq\n");
248 goto err_init_rxq;
249 }
250
251 err = hinic_rq_debug_add(nic_dev, i);
252 if (err) {
253 netif_err(nic_dev, drv, netdev,
254 "Failed to add RQ%d debug\n", i);
255 goto err_add_rq_dbg;
256 }
257 }
258
259 return 0;
260
261 err_add_rq_dbg:
262 hinic_clean_rxq(&nic_dev->rxqs[i]);
263 err_init_rxq:
264 for (j = 0; j < i; j++) {
265 hinic_rq_debug_rem(nic_dev->rxqs[j].rq);
266 hinic_clean_rxq(&nic_dev->rxqs[j]);
267 }
268
269 hinic_rq_dbgfs_uninit(nic_dev);
270
271 devm_kfree(&netdev->dev, nic_dev->rxqs);
272 nic_dev->rxqs = NULL;
273 return err;
274 }
275
276 /**
277 * free_rxqs - Free the Logical Rx Queues of specific NIC device
278 * @nic_dev: the specific NIC device
279 **/
free_rxqs(struct hinic_dev * nic_dev)280 static void free_rxqs(struct hinic_dev *nic_dev)
281 {
282 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
283 struct net_device *netdev = nic_dev->netdev;
284
285 if (!nic_dev->rxqs)
286 return;
287
288 for (i = 0; i < num_rxqs; i++) {
289 hinic_rq_debug_rem(nic_dev->rxqs[i].rq);
290 hinic_clean_rxq(&nic_dev->rxqs[i]);
291 }
292
293 hinic_rq_dbgfs_uninit(nic_dev);
294
295 devm_kfree(&netdev->dev, nic_dev->rxqs);
296 nic_dev->rxqs = NULL;
297 }
298
hinic_configure_max_qnum(struct hinic_dev * nic_dev)299 static int hinic_configure_max_qnum(struct hinic_dev *nic_dev)
300 {
301 return hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps);
302 }
303
hinic_rss_init(struct hinic_dev * nic_dev)304 static int hinic_rss_init(struct hinic_dev *nic_dev)
305 {
306 u8 default_rss_key[HINIC_RSS_KEY_SIZE];
307 u8 tmpl_idx = nic_dev->rss_tmpl_idx;
308 u32 *indir_tbl;
309 int err, i;
310
311 indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL);
312 if (!indir_tbl)
313 return -ENOMEM;
314
315 netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key));
316 for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++)
317 indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss);
318
319 err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key);
320 if (err)
321 goto out;
322
323 err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl);
324 if (err)
325 goto out;
326
327 err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type);
328 if (err)
329 goto out;
330
331 err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx,
332 nic_dev->rss_hash_engine);
333 if (err)
334 goto out;
335
336 err = hinic_rss_cfg(nic_dev, 1, tmpl_idx);
337 if (err)
338 goto out;
339
340 out:
341 kfree(indir_tbl);
342 return err;
343 }
344
hinic_rss_deinit(struct hinic_dev * nic_dev)345 static void hinic_rss_deinit(struct hinic_dev *nic_dev)
346 {
347 hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx);
348 }
349
hinic_init_rss_parameters(struct hinic_dev * nic_dev)350 static void hinic_init_rss_parameters(struct hinic_dev *nic_dev)
351 {
352 nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR;
353 nic_dev->rss_type.tcp_ipv6_ext = 1;
354 nic_dev->rss_type.ipv6_ext = 1;
355 nic_dev->rss_type.tcp_ipv6 = 1;
356 nic_dev->rss_type.ipv6 = 1;
357 nic_dev->rss_type.tcp_ipv4 = 1;
358 nic_dev->rss_type.ipv4 = 1;
359 nic_dev->rss_type.udp_ipv6 = 1;
360 nic_dev->rss_type.udp_ipv4 = 1;
361 }
362
hinic_enable_rss(struct hinic_dev * nic_dev)363 static void hinic_enable_rss(struct hinic_dev *nic_dev)
364 {
365 struct net_device *netdev = nic_dev->netdev;
366 struct hinic_hwdev *hwdev = nic_dev->hwdev;
367 struct hinic_hwif *hwif = hwdev->hwif;
368 struct pci_dev *pdev = hwif->pdev;
369 int i, node, err = 0;
370 u16 num_cpus = 0;
371
372 if (nic_dev->max_qps <= 1) {
373 nic_dev->flags &= ~HINIC_RSS_ENABLE;
374 nic_dev->rss_limit = nic_dev->max_qps;
375 nic_dev->num_qps = nic_dev->max_qps;
376 nic_dev->num_rss = nic_dev->max_qps;
377
378 return;
379 }
380
381 err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx);
382 if (err) {
383 netif_err(nic_dev, drv, netdev,
384 "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n");
385 nic_dev->flags &= ~HINIC_RSS_ENABLE;
386 nic_dev->max_qps = 1;
387 nic_dev->rss_limit = nic_dev->max_qps;
388 nic_dev->num_qps = nic_dev->max_qps;
389 nic_dev->num_rss = nic_dev->max_qps;
390
391 return;
392 }
393
394 nic_dev->flags |= HINIC_RSS_ENABLE;
395
396 for (i = 0; i < num_online_cpus(); i++) {
397 node = cpu_to_node(i);
398 if (node == dev_to_node(&pdev->dev))
399 num_cpus++;
400 }
401
402 if (!num_cpus)
403 num_cpus = num_online_cpus();
404
405 nic_dev->num_qps = hinic_hwdev_num_qps(hwdev);
406 nic_dev->num_qps = min_t(u16, nic_dev->num_qps, num_cpus);
407
408 nic_dev->rss_limit = nic_dev->num_qps;
409 nic_dev->num_rss = nic_dev->num_qps;
410
411 hinic_init_rss_parameters(nic_dev);
412 err = hinic_rss_init(nic_dev);
413 if (err)
414 netif_err(nic_dev, drv, netdev, "Failed to init rss\n");
415 }
416
hinic_open(struct net_device * netdev)417 int hinic_open(struct net_device *netdev)
418 {
419 struct hinic_dev *nic_dev = netdev_priv(netdev);
420 enum hinic_port_link_state link_state;
421 int err, ret;
422
423 if (!(nic_dev->flags & HINIC_INTF_UP)) {
424 err = hinic_hwdev_ifup(nic_dev->hwdev, nic_dev->sq_depth,
425 nic_dev->rq_depth);
426 if (err) {
427 netif_err(nic_dev, drv, netdev,
428 "Failed - HW interface up\n");
429 return err;
430 }
431 }
432
433 err = create_txqs(nic_dev);
434 if (err) {
435 netif_err(nic_dev, drv, netdev,
436 "Failed to create Tx queues\n");
437 goto err_create_txqs;
438 }
439
440 enable_txqs_napi(nic_dev);
441
442 err = create_rxqs(nic_dev);
443 if (err) {
444 netif_err(nic_dev, drv, netdev,
445 "Failed to create Rx queues\n");
446 goto err_create_rxqs;
447 }
448
449 hinic_enable_rss(nic_dev);
450
451 err = hinic_configure_max_qnum(nic_dev);
452 if (err) {
453 netif_err(nic_dev, drv, nic_dev->netdev,
454 "Failed to configure the maximum number of queues\n");
455 goto err_port_state;
456 }
457
458 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps);
459 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps);
460
461 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
462 if (err) {
463 netif_err(nic_dev, drv, netdev,
464 "Failed to set port state\n");
465 goto err_port_state;
466 }
467
468 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
469 if (err) {
470 netif_err(nic_dev, drv, netdev,
471 "Failed to set func port state\n");
472 goto err_func_port_state;
473 }
474
475 down(&nic_dev->mgmt_lock);
476
477 err = hinic_port_link_state(nic_dev, &link_state);
478 if (err) {
479 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
480 goto err_port_link;
481 }
482
483 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
484 hinic_notify_all_vfs_link_changed(nic_dev->hwdev, link_state);
485
486 if (link_state == HINIC_LINK_STATE_UP) {
487 nic_dev->flags |= HINIC_LINK_UP;
488 nic_dev->cable_unplugged = false;
489 nic_dev->module_unrecognized = false;
490 }
491
492 nic_dev->flags |= HINIC_INTF_UP;
493
494 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
495 (HINIC_LINK_UP | HINIC_INTF_UP)) {
496 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
497 netif_carrier_on(netdev);
498 netif_tx_wake_all_queues(netdev);
499 }
500
501 up(&nic_dev->mgmt_lock);
502
503 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
504 return 0;
505
506 err_port_link:
507 up(&nic_dev->mgmt_lock);
508 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
509 if (ret)
510 netif_warn(nic_dev, drv, netdev,
511 "Failed to revert func port state\n");
512
513 err_func_port_state:
514 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
515 if (ret)
516 netif_warn(nic_dev, drv, netdev,
517 "Failed to revert port state\n");
518 err_port_state:
519 free_rxqs(nic_dev);
520 if (nic_dev->flags & HINIC_RSS_ENABLE) {
521 hinic_rss_deinit(nic_dev);
522 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
523 }
524
525 err_create_rxqs:
526 disable_txqs_napi(nic_dev);
527 free_txqs(nic_dev);
528
529 err_create_txqs:
530 if (!(nic_dev->flags & HINIC_INTF_UP))
531 hinic_hwdev_ifdown(nic_dev->hwdev);
532 return err;
533 }
534
hinic_close(struct net_device * netdev)535 int hinic_close(struct net_device *netdev)
536 {
537 struct hinic_dev *nic_dev = netdev_priv(netdev);
538 unsigned int flags;
539
540 /* Disable txq napi firstly to aviod rewaking txq in free_tx_poll */
541 disable_txqs_napi(nic_dev);
542
543 down(&nic_dev->mgmt_lock);
544
545 flags = nic_dev->flags;
546 nic_dev->flags &= ~HINIC_INTF_UP;
547
548 netif_carrier_off(netdev);
549 netif_tx_disable(netdev);
550
551 up(&nic_dev->mgmt_lock);
552
553 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
554 hinic_notify_all_vfs_link_changed(nic_dev->hwdev, 0);
555
556 hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
557
558 hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
559
560 if (nic_dev->flags & HINIC_RSS_ENABLE) {
561 hinic_rss_deinit(nic_dev);
562 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
563 }
564
565 free_rxqs(nic_dev);
566 free_txqs(nic_dev);
567
568 if (flags & HINIC_INTF_UP)
569 hinic_hwdev_ifdown(nic_dev->hwdev);
570
571 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
572 return 0;
573 }
574
hinic_change_mtu(struct net_device * netdev,int new_mtu)575 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
576 {
577 struct hinic_dev *nic_dev = netdev_priv(netdev);
578 int err;
579
580 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
581
582 err = hinic_port_set_mtu(nic_dev, new_mtu);
583 if (err)
584 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
585 else
586 WRITE_ONCE(netdev->mtu, new_mtu);
587
588 return err;
589 }
590
591 /**
592 * change_mac_addr - change the main mac address of network device
593 * @netdev: network device
594 * @addr: mac address to set
595 *
596 * Return 0 - Success, negative - Failure
597 **/
change_mac_addr(struct net_device * netdev,const u8 * addr)598 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
599 {
600 struct hinic_dev *nic_dev = netdev_priv(netdev);
601 u16 vid = 0;
602 int err;
603
604 if (!is_valid_ether_addr(addr))
605 return -EADDRNOTAVAIL;
606
607 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
608 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
609
610 down(&nic_dev->mgmt_lock);
611
612 do {
613 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
614 if (err) {
615 netif_err(nic_dev, drv, netdev,
616 "Failed to delete mac\n");
617 break;
618 }
619
620 err = hinic_port_add_mac(nic_dev, addr, vid);
621 if (err) {
622 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
623 break;
624 }
625
626 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
627 } while (vid != VLAN_N_VID);
628
629 up(&nic_dev->mgmt_lock);
630 return err;
631 }
632
hinic_set_mac_addr(struct net_device * netdev,void * addr)633 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
634 {
635 unsigned char new_mac[ETH_ALEN];
636 struct sockaddr *saddr = addr;
637 int err;
638
639 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
640
641 err = change_mac_addr(netdev, new_mac);
642 if (!err)
643 eth_hw_addr_set(netdev, new_mac);
644
645 return err;
646 }
647
648 /**
649 * add_mac_addr - add mac address to network device
650 * @netdev: network device
651 * @addr: mac address to add
652 *
653 * Return 0 - Success, negative - Failure
654 **/
add_mac_addr(struct net_device * netdev,const u8 * addr)655 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
656 {
657 struct hinic_dev *nic_dev = netdev_priv(netdev);
658 u16 vid = 0;
659 int err;
660
661 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
662 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
663
664 down(&nic_dev->mgmt_lock);
665
666 do {
667 err = hinic_port_add_mac(nic_dev, addr, vid);
668 if (err) {
669 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
670 break;
671 }
672
673 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
674 } while (vid != VLAN_N_VID);
675
676 up(&nic_dev->mgmt_lock);
677 return err;
678 }
679
680 /**
681 * remove_mac_addr - remove mac address from network device
682 * @netdev: network device
683 * @addr: mac address to remove
684 *
685 * Return 0 - Success, negative - Failure
686 **/
remove_mac_addr(struct net_device * netdev,const u8 * addr)687 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
688 {
689 struct hinic_dev *nic_dev = netdev_priv(netdev);
690 u16 vid = 0;
691 int err;
692
693 if (!is_valid_ether_addr(addr))
694 return -EADDRNOTAVAIL;
695
696 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
697 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
698
699 down(&nic_dev->mgmt_lock);
700
701 do {
702 err = hinic_port_del_mac(nic_dev, addr, vid);
703 if (err) {
704 netif_err(nic_dev, drv, netdev,
705 "Failed to delete mac\n");
706 break;
707 }
708
709 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
710 } while (vid != VLAN_N_VID);
711
712 up(&nic_dev->mgmt_lock);
713 return err;
714 }
715
hinic_vlan_rx_add_vid(struct net_device * netdev,__always_unused __be16 proto,u16 vid)716 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
717 __always_unused __be16 proto, u16 vid)
718 {
719 struct hinic_dev *nic_dev = netdev_priv(netdev);
720 int ret, err;
721
722 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
723
724 down(&nic_dev->mgmt_lock);
725
726 err = hinic_port_add_vlan(nic_dev, vid);
727 if (err) {
728 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
729 goto err_vlan_add;
730 }
731
732 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
733 if (err && err != HINIC_PF_SET_VF_ALREADY) {
734 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
735 goto err_add_mac;
736 }
737
738 bitmap_set(nic_dev->vlan_bitmap, vid, 1);
739
740 up(&nic_dev->mgmt_lock);
741 return 0;
742
743 err_add_mac:
744 ret = hinic_port_del_vlan(nic_dev, vid);
745 if (ret)
746 netif_err(nic_dev, drv, netdev,
747 "Failed to revert by removing vlan\n");
748
749 err_vlan_add:
750 up(&nic_dev->mgmt_lock);
751 return err;
752 }
753
hinic_vlan_rx_kill_vid(struct net_device * netdev,__always_unused __be16 proto,u16 vid)754 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
755 __always_unused __be16 proto, u16 vid)
756 {
757 struct hinic_dev *nic_dev = netdev_priv(netdev);
758 int err;
759
760 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
761
762 down(&nic_dev->mgmt_lock);
763
764 err = hinic_port_del_vlan(nic_dev, vid);
765 if (err) {
766 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
767 goto err_del_vlan;
768 }
769
770 bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
771
772 up(&nic_dev->mgmt_lock);
773 return 0;
774
775 err_del_vlan:
776 up(&nic_dev->mgmt_lock);
777 return err;
778 }
779
set_rx_mode(struct work_struct * work)780 static void set_rx_mode(struct work_struct *work)
781 {
782 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
783 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
784
785 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
786
787 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
788 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
789 }
790
hinic_set_rx_mode(struct net_device * netdev)791 static void hinic_set_rx_mode(struct net_device *netdev)
792 {
793 struct hinic_dev *nic_dev = netdev_priv(netdev);
794 struct hinic_rx_mode_work *rx_mode_work;
795 u32 rx_mode;
796
797 rx_mode_work = &nic_dev->rx_mode_work;
798
799 rx_mode = HINIC_RX_MODE_UC |
800 HINIC_RX_MODE_MC |
801 HINIC_RX_MODE_BC;
802
803 if (netdev->flags & IFF_PROMISC) {
804 if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
805 rx_mode |= HINIC_RX_MODE_PROMISC;
806 } else if (netdev->flags & IFF_ALLMULTI) {
807 rx_mode |= HINIC_RX_MODE_MC_ALL;
808 }
809
810 rx_mode_work->rx_mode = rx_mode;
811
812 queue_work(nic_dev->workq, &rx_mode_work->work);
813 }
814
hinic_tx_timeout(struct net_device * netdev,unsigned int txqueue)815 static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
816 {
817 struct hinic_dev *nic_dev = netdev_priv(netdev);
818 u16 sw_pi, hw_ci, sw_ci;
819 struct hinic_sq *sq;
820 u16 num_sqs, q_id;
821
822 num_sqs = hinic_hwdev_num_qps(nic_dev->hwdev);
823
824 netif_err(nic_dev, drv, netdev, "Tx timeout\n");
825
826 for (q_id = 0; q_id < num_sqs; q_id++) {
827 if (!netif_xmit_stopped(netdev_get_tx_queue(netdev, q_id)))
828 continue;
829
830 sq = hinic_hwdev_get_sq(nic_dev->hwdev, q_id);
831 sw_pi = atomic_read(&sq->wq->prod_idx) & sq->wq->mask;
832 hw_ci = be16_to_cpu(*(u16 *)(sq->hw_ci_addr)) & sq->wq->mask;
833 sw_ci = atomic_read(&sq->wq->cons_idx) & sq->wq->mask;
834 netif_err(nic_dev, drv, netdev, "Txq%d: sw_pi: %d, hw_ci: %d, sw_ci: %d, napi->state: 0x%lx\n",
835 q_id, sw_pi, hw_ci, sw_ci,
836 nic_dev->txqs[q_id].napi.state);
837 }
838 }
839
hinic_get_stats64(struct net_device * netdev,struct rtnl_link_stats64 * stats)840 static void hinic_get_stats64(struct net_device *netdev,
841 struct rtnl_link_stats64 *stats)
842 {
843 struct hinic_dev *nic_dev = netdev_priv(netdev);
844 struct hinic_rxq_stats nic_rx_stats = {};
845 struct hinic_txq_stats nic_tx_stats = {};
846
847 if (nic_dev->flags & HINIC_INTF_UP)
848 gather_nic_stats(nic_dev, &nic_rx_stats, &nic_tx_stats);
849
850 stats->rx_bytes = nic_rx_stats.bytes;
851 stats->rx_packets = nic_rx_stats.pkts;
852 stats->rx_errors = nic_rx_stats.errors;
853
854 stats->tx_bytes = nic_tx_stats.bytes;
855 stats->tx_packets = nic_tx_stats.pkts;
856 stats->tx_errors = nic_tx_stats.tx_dropped;
857 }
858
hinic_set_features(struct net_device * netdev,netdev_features_t features)859 static int hinic_set_features(struct net_device *netdev,
860 netdev_features_t features)
861 {
862 struct hinic_dev *nic_dev = netdev_priv(netdev);
863
864 return set_features(nic_dev, nic_dev->netdev->features,
865 features, false);
866 }
867
hinic_fix_features(struct net_device * netdev,netdev_features_t features)868 static netdev_features_t hinic_fix_features(struct net_device *netdev,
869 netdev_features_t features)
870 {
871 struct hinic_dev *nic_dev = netdev_priv(netdev);
872
873 /* If Rx checksum is disabled, then LRO should also be disabled */
874 if (!(features & NETIF_F_RXCSUM)) {
875 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n");
876 features &= ~NETIF_F_LRO;
877 }
878
879 return features;
880 }
881
882 static const struct net_device_ops hinic_netdev_ops = {
883 .ndo_open = hinic_open,
884 .ndo_stop = hinic_close,
885 .ndo_change_mtu = hinic_change_mtu,
886 .ndo_set_mac_address = hinic_set_mac_addr,
887 .ndo_validate_addr = eth_validate_addr,
888 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
889 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
890 .ndo_set_rx_mode = hinic_set_rx_mode,
891 .ndo_start_xmit = hinic_xmit_frame,
892 .ndo_tx_timeout = hinic_tx_timeout,
893 .ndo_get_stats64 = hinic_get_stats64,
894 .ndo_fix_features = hinic_fix_features,
895 .ndo_set_features = hinic_set_features,
896 .ndo_set_vf_mac = hinic_ndo_set_vf_mac,
897 .ndo_set_vf_vlan = hinic_ndo_set_vf_vlan,
898 .ndo_get_vf_config = hinic_ndo_get_vf_config,
899 .ndo_set_vf_trust = hinic_ndo_set_vf_trust,
900 .ndo_set_vf_rate = hinic_ndo_set_vf_bw,
901 .ndo_set_vf_spoofchk = hinic_ndo_set_vf_spoofchk,
902 .ndo_set_vf_link_state = hinic_ndo_set_vf_link_state,
903 };
904
905 static const struct net_device_ops hinicvf_netdev_ops = {
906 .ndo_open = hinic_open,
907 .ndo_stop = hinic_close,
908 .ndo_change_mtu = hinic_change_mtu,
909 .ndo_set_mac_address = hinic_set_mac_addr,
910 .ndo_validate_addr = eth_validate_addr,
911 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
912 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
913 .ndo_set_rx_mode = hinic_set_rx_mode,
914 .ndo_start_xmit = hinic_xmit_frame,
915 .ndo_tx_timeout = hinic_tx_timeout,
916 .ndo_get_stats64 = hinic_get_stats64,
917 .ndo_fix_features = hinic_fix_features,
918 .ndo_set_features = hinic_set_features,
919 };
920
netdev_features_init(struct net_device * netdev)921 static void netdev_features_init(struct net_device *netdev)
922 {
923 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
924 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
925 NETIF_F_RXCSUM | NETIF_F_LRO |
926 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
927 NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM;
928
929 netdev->vlan_features = netdev->hw_features;
930
931 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
932
933 netdev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SCTP_CRC |
934 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN |
935 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_UDP_TUNNEL;
936 }
937
hinic_refresh_nic_cfg(struct hinic_dev * nic_dev)938 static void hinic_refresh_nic_cfg(struct hinic_dev *nic_dev)
939 {
940 struct hinic_nic_cfg *nic_cfg = &nic_dev->hwdev->func_to_io.nic_cfg;
941 struct hinic_pause_config pause_info = {0};
942 struct hinic_port_cap port_cap = {0};
943
944 if (hinic_port_get_cap(nic_dev, &port_cap))
945 return;
946
947 mutex_lock(&nic_cfg->cfg_mutex);
948 if (nic_cfg->pause_set || !port_cap.autoneg_state) {
949 nic_cfg->auto_neg = port_cap.autoneg_state;
950 pause_info.auto_neg = nic_cfg->auto_neg;
951 pause_info.rx_pause = nic_cfg->rx_pause;
952 pause_info.tx_pause = nic_cfg->tx_pause;
953 hinic_set_hw_pause_info(nic_dev->hwdev, &pause_info);
954 }
955 mutex_unlock(&nic_cfg->cfg_mutex);
956 }
957
958 /**
959 * link_status_event_handler - link event handler
960 * @handle: nic device for the handler
961 * @buf_in: input buffer
962 * @in_size: input size
963 * @buf_out: output buffer
964 * @out_size: returned output size
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 (changed & NETIF_F_HW_VLAN_CTAG_FILTER) {
1098 ret = hinic_set_vlan_fliter(nic_dev,
1099 !!(features &
1100 NETIF_F_HW_VLAN_CTAG_FILTER));
1101 if (ret) {
1102 err = ret;
1103 failed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1104 }
1105 }
1106
1107 if (err) {
1108 nic_dev->netdev->features = features ^ failed_features;
1109 return -EIO;
1110 }
1111
1112 return 0;
1113 }
1114
hinic_init_intr_coalesce(struct hinic_dev * nic_dev)1115 static int hinic_init_intr_coalesce(struct hinic_dev *nic_dev)
1116 {
1117 u64 size;
1118 u16 i;
1119
1120 size = sizeof(struct hinic_intr_coal_info) * nic_dev->max_qps;
1121 nic_dev->rx_intr_coalesce = kzalloc(size, GFP_KERNEL);
1122 if (!nic_dev->rx_intr_coalesce)
1123 return -ENOMEM;
1124 nic_dev->tx_intr_coalesce = kzalloc(size, GFP_KERNEL);
1125 if (!nic_dev->tx_intr_coalesce) {
1126 kfree(nic_dev->rx_intr_coalesce);
1127 return -ENOMEM;
1128 }
1129
1130 for (i = 0; i < nic_dev->max_qps; i++) {
1131 nic_dev->rx_intr_coalesce[i].pending_limt =
1132 HINIC_DEAULT_TXRX_MSIX_PENDING_LIMIT;
1133 nic_dev->rx_intr_coalesce[i].coalesce_timer_cfg =
1134 HINIC_DEAULT_TXRX_MSIX_COALESC_TIMER_CFG;
1135 nic_dev->rx_intr_coalesce[i].resend_timer_cfg =
1136 HINIC_DEAULT_TXRX_MSIX_RESEND_TIMER_CFG;
1137 nic_dev->tx_intr_coalesce[i].pending_limt =
1138 HINIC_DEAULT_TXRX_MSIX_PENDING_LIMIT;
1139 nic_dev->tx_intr_coalesce[i].coalesce_timer_cfg =
1140 HINIC_DEAULT_TXRX_MSIX_COALESC_TIMER_CFG;
1141 nic_dev->tx_intr_coalesce[i].resend_timer_cfg =
1142 HINIC_DEAULT_TXRX_MSIX_RESEND_TIMER_CFG;
1143 }
1144
1145 return 0;
1146 }
1147
hinic_free_intr_coalesce(struct hinic_dev * nic_dev)1148 static void hinic_free_intr_coalesce(struct hinic_dev *nic_dev)
1149 {
1150 kfree(nic_dev->tx_intr_coalesce);
1151 kfree(nic_dev->rx_intr_coalesce);
1152 }
1153
1154 /**
1155 * nic_dev_init - Initialize the NIC device
1156 * @pdev: the NIC pci device
1157 *
1158 * Return 0 - Success, negative - Failure
1159 **/
nic_dev_init(struct pci_dev * pdev)1160 static int nic_dev_init(struct pci_dev *pdev)
1161 {
1162 struct hinic_rx_mode_work *rx_mode_work;
1163 struct hinic_dev *nic_dev;
1164 struct net_device *netdev;
1165 struct hinic_hwdev *hwdev;
1166 struct devlink *devlink;
1167 u8 addr[ETH_ALEN];
1168 int err, num_qps;
1169
1170 devlink = hinic_devlink_alloc(&pdev->dev);
1171 if (!devlink) {
1172 dev_err(&pdev->dev, "Hinic devlink alloc failed\n");
1173 return -ENOMEM;
1174 }
1175
1176 hwdev = hinic_init_hwdev(pdev, devlink);
1177 if (IS_ERR(hwdev)) {
1178 dev_err(&pdev->dev, "Failed to initialize HW device\n");
1179 hinic_devlink_free(devlink);
1180 return PTR_ERR(hwdev);
1181 }
1182
1183 num_qps = hinic_hwdev_num_qps(hwdev);
1184 if (num_qps <= 0) {
1185 dev_err(&pdev->dev, "Invalid number of QPS\n");
1186 err = -EINVAL;
1187 goto err_num_qps;
1188 }
1189
1190 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
1191 if (!netdev) {
1192 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
1193 err = -ENOMEM;
1194 goto err_alloc_etherdev;
1195 }
1196
1197 if (!HINIC_IS_VF(hwdev->hwif))
1198 netdev->netdev_ops = &hinic_netdev_ops;
1199 else
1200 netdev->netdev_ops = &hinicvf_netdev_ops;
1201
1202 netdev->max_mtu = HINIC_MAX_MTU_SIZE;
1203 netdev->min_mtu = HINIC_MIN_MTU_SIZE;
1204
1205 nic_dev = netdev_priv(netdev);
1206 nic_dev->netdev = netdev;
1207 nic_dev->hwdev = hwdev;
1208 nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
1209 nic_dev->flags = 0;
1210 nic_dev->txqs = NULL;
1211 nic_dev->rxqs = NULL;
1212 nic_dev->tx_weight = tx_weight;
1213 nic_dev->rx_weight = rx_weight;
1214 nic_dev->sq_depth = HINIC_SQ_DEPTH;
1215 nic_dev->rq_depth = HINIC_RQ_DEPTH;
1216 nic_dev->sriov_info.hwdev = hwdev;
1217 nic_dev->sriov_info.pdev = pdev;
1218 nic_dev->max_qps = num_qps;
1219 nic_dev->devlink = devlink;
1220
1221 hinic_set_ethtool_ops(netdev);
1222
1223 sema_init(&nic_dev->mgmt_lock, 1);
1224
1225 nic_dev->vlan_bitmap = devm_bitmap_zalloc(&pdev->dev, VLAN_N_VID,
1226 GFP_KERNEL);
1227 if (!nic_dev->vlan_bitmap) {
1228 err = -ENOMEM;
1229 goto err_vlan_bitmap;
1230 }
1231
1232 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
1233 if (!nic_dev->workq) {
1234 err = -ENOMEM;
1235 goto err_workq;
1236 }
1237
1238 pci_set_drvdata(pdev, netdev);
1239
1240 err = hinic_port_get_mac(nic_dev, addr);
1241 if (err) {
1242 dev_err(&pdev->dev, "Failed to get mac address\n");
1243 goto err_get_mac;
1244 }
1245 eth_hw_addr_set(netdev, addr);
1246
1247 if (!is_valid_ether_addr(netdev->dev_addr)) {
1248 if (!HINIC_IS_VF(nic_dev->hwdev->hwif)) {
1249 dev_err(&pdev->dev, "Invalid MAC address\n");
1250 err = -EIO;
1251 goto err_add_mac;
1252 }
1253
1254 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
1255 netdev->dev_addr);
1256 eth_hw_addr_random(netdev);
1257 }
1258
1259 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
1260 if (err && err != HINIC_PF_SET_VF_ALREADY) {
1261 dev_err(&pdev->dev, "Failed to add mac\n");
1262 goto err_add_mac;
1263 }
1264
1265 err = hinic_port_set_mtu(nic_dev, netdev->mtu);
1266 if (err) {
1267 dev_err(&pdev->dev, "Failed to set mtu\n");
1268 goto err_set_mtu;
1269 }
1270
1271 rx_mode_work = &nic_dev->rx_mode_work;
1272 INIT_WORK(&rx_mode_work->work, set_rx_mode);
1273
1274 netdev_features_init(netdev);
1275
1276 netif_carrier_off(netdev);
1277
1278 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
1279 nic_dev, link_status_event_handler);
1280 hinic_hwdev_cb_register(nic_dev->hwdev,
1281 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT,
1282 nic_dev, cable_plug_event);
1283 hinic_hwdev_cb_register(nic_dev->hwdev,
1284 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT,
1285 nic_dev, link_err_event);
1286
1287 err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
1288 if (err)
1289 goto err_set_features;
1290
1291 /* enable pause and disable pfc by default */
1292 err = hinic_dcb_set_pfc(nic_dev->hwdev, 0, 0);
1293 if (err)
1294 goto err_set_pfc;
1295
1296 SET_NETDEV_DEV(netdev, &pdev->dev);
1297
1298 err = hinic_init_intr_coalesce(nic_dev);
1299 if (err) {
1300 dev_err(&pdev->dev, "Failed to init_intr_coalesce\n");
1301 goto err_init_intr;
1302 }
1303
1304 hinic_dbg_init(nic_dev);
1305
1306 hinic_func_tbl_dbgfs_init(nic_dev);
1307
1308 err = hinic_func_table_debug_add(nic_dev);
1309 if (err) {
1310 dev_err(&pdev->dev, "Failed to add func_table debug\n");
1311 goto err_add_func_table_dbg;
1312 }
1313
1314 err = register_netdev(netdev);
1315 if (err) {
1316 dev_err(&pdev->dev, "Failed to register netdev\n");
1317 goto err_reg_netdev;
1318 }
1319
1320 return 0;
1321
1322 err_reg_netdev:
1323 hinic_func_table_debug_rem(nic_dev);
1324 err_add_func_table_dbg:
1325 hinic_func_tbl_dbgfs_uninit(nic_dev);
1326 hinic_dbg_uninit(nic_dev);
1327 hinic_free_intr_coalesce(nic_dev);
1328 err_init_intr:
1329 err_set_pfc:
1330 err_set_features:
1331 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1332 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT);
1333 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1334 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT);
1335 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1336 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1337 cancel_work_sync(&rx_mode_work->work);
1338
1339 err_set_mtu:
1340 hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
1341 err_add_mac:
1342 err_get_mac:
1343 pci_set_drvdata(pdev, NULL);
1344 destroy_workqueue(nic_dev->workq);
1345 err_workq:
1346 err_vlan_bitmap:
1347 free_netdev(netdev);
1348
1349 err_alloc_etherdev:
1350 err_num_qps:
1351 hinic_free_hwdev(hwdev);
1352 hinic_devlink_free(devlink);
1353 return err;
1354 }
1355
hinic_probe(struct pci_dev * pdev,const struct pci_device_id * id)1356 static int hinic_probe(struct pci_dev *pdev,
1357 const struct pci_device_id *id)
1358 {
1359 int err = pci_enable_device(pdev);
1360
1361 if (err)
1362 return dev_err_probe(&pdev->dev, err, "Failed to enable PCI device\n");
1363
1364 err = pci_request_regions(pdev, HINIC_DRV_NAME);
1365 if (err) {
1366 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1367 goto err_pci_regions;
1368 }
1369
1370 pci_set_master(pdev);
1371
1372 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1373 if (err) {
1374 dev_err(&pdev->dev, "Failed to set DMA mask\n");
1375 goto err_dma_mask;
1376 }
1377
1378 err = nic_dev_init(pdev);
1379 if (err) {
1380 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1381 goto err_nic_dev_init;
1382 }
1383
1384 dev_info(&pdev->dev, "HiNIC driver - probed\n");
1385 return 0;
1386
1387 err_nic_dev_init:
1388 err_dma_mask:
1389 pci_release_regions(pdev);
1390
1391 err_pci_regions:
1392 pci_disable_device(pdev);
1393 return err;
1394 }
1395
wait_sriov_cfg_complete(struct hinic_dev * nic_dev)1396 static void wait_sriov_cfg_complete(struct hinic_dev *nic_dev)
1397 {
1398 struct hinic_sriov_info *sriov_info = &nic_dev->sriov_info;
1399 u32 loop_cnt = 0;
1400
1401 set_bit(HINIC_FUNC_REMOVE, &sriov_info->state);
1402 usleep_range(9900, 10000);
1403
1404 while (loop_cnt < HINIC_WAIT_SRIOV_CFG_TIMEOUT) {
1405 if (!test_bit(HINIC_SRIOV_ENABLE, &sriov_info->state) &&
1406 !test_bit(HINIC_SRIOV_DISABLE, &sriov_info->state))
1407 return;
1408
1409 usleep_range(9900, 10000);
1410 loop_cnt++;
1411 }
1412 }
1413
hinic_remove(struct pci_dev * pdev)1414 static void hinic_remove(struct pci_dev *pdev)
1415 {
1416 struct net_device *netdev = pci_get_drvdata(pdev);
1417 struct hinic_dev *nic_dev = netdev_priv(netdev);
1418 struct devlink *devlink = nic_dev->devlink;
1419 struct hinic_rx_mode_work *rx_mode_work;
1420
1421 if (!HINIC_IS_VF(nic_dev->hwdev->hwif)) {
1422 wait_sriov_cfg_complete(nic_dev);
1423 hinic_pci_sriov_disable(pdev);
1424 }
1425
1426 unregister_netdev(netdev);
1427
1428 hinic_func_table_debug_rem(nic_dev);
1429
1430 hinic_func_tbl_dbgfs_uninit(nic_dev);
1431
1432 hinic_dbg_uninit(nic_dev);
1433
1434 hinic_free_intr_coalesce(nic_dev);
1435
1436 hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
1437
1438 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1439 HINIC_MGMT_MSG_CMD_LINK_ERR_EVENT);
1440 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1441 HINIC_MGMT_MSG_CMD_CABLE_PLUG_EVENT);
1442 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1443 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1444
1445 rx_mode_work = &nic_dev->rx_mode_work;
1446 cancel_work_sync(&rx_mode_work->work);
1447
1448 pci_set_drvdata(pdev, NULL);
1449
1450 destroy_workqueue(nic_dev->workq);
1451
1452 hinic_free_hwdev(nic_dev->hwdev);
1453
1454 free_netdev(netdev);
1455
1456 hinic_devlink_free(devlink);
1457
1458 pci_release_regions(pdev);
1459 pci_disable_device(pdev);
1460
1461 dev_info(&pdev->dev, "HiNIC driver - removed\n");
1462 }
1463
hinic_shutdown(struct pci_dev * pdev)1464 static void hinic_shutdown(struct pci_dev *pdev)
1465 {
1466 pci_disable_device(pdev);
1467 }
1468
1469 static const struct pci_device_id hinic_pci_table[] = {
1470 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1471 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1472 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1473 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1474 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_VF), 0},
1475 { 0, 0}
1476 };
1477 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1478
1479 static struct pci_driver hinic_driver = {
1480 .name = HINIC_DRV_NAME,
1481 .id_table = hinic_pci_table,
1482 .probe = hinic_probe,
1483 .remove = hinic_remove,
1484 .shutdown = hinic_shutdown,
1485 .sriov_configure = hinic_pci_sriov_configure,
1486 };
1487
hinic_module_init(void)1488 static int __init hinic_module_init(void)
1489 {
1490 int ret;
1491
1492 hinic_dbg_register_debugfs(HINIC_DRV_NAME);
1493
1494 ret = pci_register_driver(&hinic_driver);
1495 if (ret)
1496 hinic_dbg_unregister_debugfs();
1497
1498 return ret;
1499 }
1500
hinic_module_exit(void)1501 static void __exit hinic_module_exit(void)
1502 {
1503 pci_unregister_driver(&hinic_driver);
1504 hinic_dbg_unregister_debugfs();
1505 }
1506
1507 module_init(hinic_module_init);
1508 module_exit(hinic_module_exit);
1509