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39#include <linux/module.h>
40#include <linux/netdevice.h>
41#include <linux/ethtool.h>
42#include <linux/mutex.h>
43#include <linux/list.h>
44#include <linux/rculist.h>
45#include <linux/spinlock.h>
46#include <linux/pci.h>
47#include <net/dcbnl.h>
48#include <net/ipv6.h>
49#include <net/addrconf.h>
50#include <linux/if_ether.h>
51
52#include <rdma/ib_verbs.h>
53#include <rdma/ib_user_verbs.h>
54#include <rdma/ib_umem.h>
55#include <rdma/ib_addr.h>
56
57#include "bnxt_ulp.h"
58#include "roce_hsi.h"
59#include "qplib_res.h"
60#include "qplib_sp.h"
61#include "qplib_fp.h"
62#include "qplib_rcfw.h"
63#include "bnxt_re.h"
64#include "ib_verbs.h"
65#include <rdma/bnxt_re-abi.h>
66#include "bnxt.h"
67#include "hw_counters.h"
68
69static char version[] =
70 BNXT_RE_DESC " v" ROCE_DRV_MODULE_VERSION "\n";
71
72MODULE_AUTHOR("Eddie Wai <eddie.wai@broadcom.com>");
73MODULE_DESCRIPTION(BNXT_RE_DESC " Driver");
74MODULE_LICENSE("Dual BSD/GPL");
75
76
77static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list);
78
79static DEFINE_MUTEX(bnxt_re_dev_lock);
80static struct workqueue_struct *bnxt_re_wq;
81static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait);
82
83
84static void bnxt_re_stop(void *p)
85{
86}
87
88static void bnxt_re_start(void *p)
89{
90}
91
92static void bnxt_re_sriov_config(void *p, int num_vfs)
93{
94}
95
96static void bnxt_re_shutdown(void *p)
97{
98 struct bnxt_re_dev *rdev = p;
99
100 if (!rdev)
101 return;
102
103 bnxt_re_ib_unreg(rdev, false);
104}
105
106static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
107 .ulp_async_notifier = NULL,
108 .ulp_stop = bnxt_re_stop,
109 .ulp_start = bnxt_re_start,
110 .ulp_sriov_config = bnxt_re_sriov_config,
111 .ulp_shutdown = bnxt_re_shutdown
112};
113
114
115
116
117
118
119static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev, bool lock_wait)
120{
121 struct bnxt_en_dev *en_dev;
122 int rc;
123
124 if (!rdev)
125 return -EINVAL;
126
127 en_dev = rdev->en_dev;
128
129 if (lock_wait)
130 rtnl_lock();
131
132 rc = en_dev->en_ops->bnxt_unregister_device(rdev->en_dev,
133 BNXT_ROCE_ULP);
134 if (lock_wait)
135 rtnl_unlock();
136 return rc;
137}
138
139static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev)
140{
141 struct bnxt_en_dev *en_dev;
142 int rc = 0;
143
144 if (!rdev)
145 return -EINVAL;
146
147 en_dev = rdev->en_dev;
148
149 rtnl_lock();
150 rc = en_dev->en_ops->bnxt_register_device(en_dev, BNXT_ROCE_ULP,
151 &bnxt_re_ulp_ops, rdev);
152 rtnl_unlock();
153 return rc;
154}
155
156static int bnxt_re_free_msix(struct bnxt_re_dev *rdev, bool lock_wait)
157{
158 struct bnxt_en_dev *en_dev;
159 int rc;
160
161 if (!rdev)
162 return -EINVAL;
163
164 en_dev = rdev->en_dev;
165
166 if (lock_wait)
167 rtnl_lock();
168
169 rc = en_dev->en_ops->bnxt_free_msix(rdev->en_dev, BNXT_ROCE_ULP);
170
171 if (lock_wait)
172 rtnl_unlock();
173 return rc;
174}
175
176static int bnxt_re_request_msix(struct bnxt_re_dev *rdev)
177{
178 int rc = 0, num_msix_want = BNXT_RE_MAX_MSIX, num_msix_got;
179 struct bnxt_en_dev *en_dev;
180
181 if (!rdev)
182 return -EINVAL;
183
184 en_dev = rdev->en_dev;
185
186 num_msix_want = min_t(u32, BNXT_RE_MAX_MSIX, num_online_cpus());
187
188 rtnl_lock();
189 num_msix_got = en_dev->en_ops->bnxt_request_msix(en_dev, BNXT_ROCE_ULP,
190 rdev->msix_entries,
191 num_msix_want);
192 if (num_msix_got < BNXT_RE_MIN_MSIX) {
193 rc = -EINVAL;
194 goto done;
195 }
196 if (num_msix_got != num_msix_want) {
197 dev_warn(rdev_to_dev(rdev),
198 "Requested %d MSI-X vectors, got %d\n",
199 num_msix_want, num_msix_got);
200 }
201 rdev->num_msix = num_msix_got;
202done:
203 rtnl_unlock();
204 return rc;
205}
206
207static void bnxt_re_init_hwrm_hdr(struct bnxt_re_dev *rdev, struct input *hdr,
208 u16 opcd, u16 crid, u16 trid)
209{
210 hdr->req_type = cpu_to_le16(opcd);
211 hdr->cmpl_ring = cpu_to_le16(crid);
212 hdr->target_id = cpu_to_le16(trid);
213}
214
215static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
216 int msg_len, void *resp, int resp_max_len,
217 int timeout)
218{
219 fw_msg->msg = msg;
220 fw_msg->msg_len = msg_len;
221 fw_msg->resp = resp;
222 fw_msg->resp_max_len = resp_max_len;
223 fw_msg->timeout = timeout;
224}
225
226static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id,
227 bool lock_wait)
228{
229 struct bnxt_en_dev *en_dev = rdev->en_dev;
230 struct hwrm_ring_free_input req = {0};
231 struct hwrm_ring_free_output resp;
232 struct bnxt_fw_msg fw_msg;
233 bool do_unlock = false;
234 int rc = -EINVAL;
235
236 if (!en_dev)
237 return rc;
238
239 memset(&fw_msg, 0, sizeof(fw_msg));
240 if (lock_wait) {
241 rtnl_lock();
242 do_unlock = true;
243 }
244
245 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1);
246 req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
247 req.ring_id = cpu_to_le16(fw_ring_id);
248 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
249 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
250 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
251 if (rc)
252 dev_err(rdev_to_dev(rdev),
253 "Failed to free HW ring:%d :%#x", req.ring_id, rc);
254 if (do_unlock)
255 rtnl_unlock();
256 return rc;
257}
258
259static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr,
260 int pages, int type, u32 ring_mask,
261 u32 map_index, u16 *fw_ring_id)
262{
263 struct bnxt_en_dev *en_dev = rdev->en_dev;
264 struct hwrm_ring_alloc_input req = {0};
265 struct hwrm_ring_alloc_output resp;
266 struct bnxt_fw_msg fw_msg;
267 int rc = -EINVAL;
268
269 if (!en_dev)
270 return rc;
271
272 memset(&fw_msg, 0, sizeof(fw_msg));
273 rtnl_lock();
274 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1);
275 req.enables = 0;
276 req.page_tbl_addr = cpu_to_le64(dma_arr[0]);
277 if (pages > 1) {
278
279 req.page_size = BNXT_PAGE_SHIFT;
280 req.page_tbl_depth = 1;
281 }
282 req.fbo = 0;
283
284 req.logical_id = cpu_to_le16(map_index);
285 req.length = cpu_to_le32(ring_mask + 1);
286 req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
287 req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
288 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
289 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
290 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
291 if (!rc)
292 *fw_ring_id = le16_to_cpu(resp.ring_id);
293
294 rtnl_unlock();
295 return rc;
296}
297
298static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
299 u32 fw_stats_ctx_id, bool lock_wait)
300{
301 struct bnxt_en_dev *en_dev = rdev->en_dev;
302 struct hwrm_stat_ctx_free_input req = {0};
303 struct bnxt_fw_msg fw_msg;
304 bool do_unlock = false;
305 int rc = -EINVAL;
306
307 if (!en_dev)
308 return rc;
309
310 memset(&fw_msg, 0, sizeof(fw_msg));
311 if (lock_wait) {
312 rtnl_lock();
313 do_unlock = true;
314 }
315
316 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1);
317 req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id);
318 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&req,
319 sizeof(req), DFLT_HWRM_CMD_TIMEOUT);
320 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
321 if (rc)
322 dev_err(rdev_to_dev(rdev),
323 "Failed to free HW stats context %#x", rc);
324
325 if (do_unlock)
326 rtnl_unlock();
327 return rc;
328}
329
330static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
331 dma_addr_t dma_map,
332 u32 *fw_stats_ctx_id)
333{
334 struct hwrm_stat_ctx_alloc_output resp = {0};
335 struct hwrm_stat_ctx_alloc_input req = {0};
336 struct bnxt_en_dev *en_dev = rdev->en_dev;
337 struct bnxt_fw_msg fw_msg;
338 int rc = -EINVAL;
339
340 *fw_stats_ctx_id = INVALID_STATS_CTX_ID;
341
342 if (!en_dev)
343 return rc;
344
345 memset(&fw_msg, 0, sizeof(fw_msg));
346 rtnl_lock();
347
348 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
349 req.update_period_ms = cpu_to_le32(1000);
350 req.stats_dma_addr = cpu_to_le64(dma_map);
351 req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE;
352 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
353 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
354 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
355 if (!rc)
356 *fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id);
357
358 rtnl_unlock();
359 return rc;
360}
361
362
363
364static bool is_bnxt_re_dev(struct net_device *netdev)
365{
366 struct ethtool_drvinfo drvinfo;
367
368 if (netdev->ethtool_ops && netdev->ethtool_ops->get_drvinfo) {
369 memset(&drvinfo, 0, sizeof(drvinfo));
370 netdev->ethtool_ops->get_drvinfo(netdev, &drvinfo);
371
372 if (strcmp(drvinfo.driver, "bnxt_en"))
373 return false;
374 return true;
375 }
376 return false;
377}
378
379static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev)
380{
381 struct bnxt_re_dev *rdev;
382
383 rcu_read_lock();
384 list_for_each_entry_rcu(rdev, &bnxt_re_dev_list, list) {
385 if (rdev->netdev == netdev) {
386 rcu_read_unlock();
387 return rdev;
388 }
389 }
390 rcu_read_unlock();
391 return NULL;
392}
393
394static void bnxt_re_dev_unprobe(struct net_device *netdev,
395 struct bnxt_en_dev *en_dev)
396{
397 dev_put(netdev);
398 module_put(en_dev->pdev->driver->driver.owner);
399}
400
401static struct bnxt_en_dev *bnxt_re_dev_probe(struct net_device *netdev)
402{
403 struct bnxt *bp = netdev_priv(netdev);
404 struct bnxt_en_dev *en_dev;
405 struct pci_dev *pdev;
406
407
408 if (!bp->ulp_probe)
409 return ERR_PTR(-EINVAL);
410
411 en_dev = bp->ulp_probe(netdev);
412 if (IS_ERR(en_dev))
413 return en_dev;
414
415 pdev = en_dev->pdev;
416 if (!pdev)
417 return ERR_PTR(-EINVAL);
418
419 if (!(en_dev->flags & BNXT_EN_FLAG_ROCE_CAP)) {
420 dev_dbg(&pdev->dev,
421 "%s: probe error: RoCE is not supported on this device",
422 ROCE_DRV_MODULE_NAME);
423 return ERR_PTR(-ENODEV);
424 }
425
426
427 if (!try_module_get(pdev->driver->driver.owner))
428 return ERR_PTR(-ENODEV);
429
430 dev_hold(netdev);
431
432 return en_dev;
433}
434
435static void bnxt_re_unregister_ib(struct bnxt_re_dev *rdev)
436{
437 ib_unregister_device(&rdev->ibdev);
438}
439
440static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
441{
442 struct ib_device *ibdev = &rdev->ibdev;
443
444
445 ibdev->owner = THIS_MODULE;
446 ibdev->node_type = RDMA_NODE_IB_CA;
447 strlcpy(ibdev->name, "bnxt_re%d", IB_DEVICE_NAME_MAX);
448 strlcpy(ibdev->node_desc, BNXT_RE_DESC " HCA",
449 strlen(BNXT_RE_DESC) + 5);
450 ibdev->phys_port_cnt = 1;
451
452 bnxt_qplib_get_guid(rdev->netdev->dev_addr, (u8 *)&ibdev->node_guid);
453
454 ibdev->num_comp_vectors = 1;
455 ibdev->dev.parent = &rdev->en_dev->pdev->dev;
456 ibdev->local_dma_lkey = BNXT_QPLIB_RSVD_LKEY;
457
458
459 ibdev->uverbs_abi_ver = BNXT_RE_ABI_VERSION;
460 ibdev->uverbs_cmd_mask =
461 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
462 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
463 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
464 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
465 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
466 (1ull << IB_USER_VERBS_CMD_REG_MR) |
467 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
468 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
469 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
470 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
471 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
472 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
473 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
474 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
475 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
476 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
477 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
478 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
479 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
480 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
481 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
482 (1ull << IB_USER_VERBS_CMD_MODIFY_AH) |
483 (1ull << IB_USER_VERBS_CMD_QUERY_AH) |
484 (1ull << IB_USER_VERBS_CMD_DESTROY_AH);
485
486
487
488 ibdev->query_device = bnxt_re_query_device;
489 ibdev->modify_device = bnxt_re_modify_device;
490
491 ibdev->query_port = bnxt_re_query_port;
492 ibdev->get_port_immutable = bnxt_re_get_port_immutable;
493 ibdev->query_pkey = bnxt_re_query_pkey;
494 ibdev->query_gid = bnxt_re_query_gid;
495 ibdev->get_netdev = bnxt_re_get_netdev;
496 ibdev->add_gid = bnxt_re_add_gid;
497 ibdev->del_gid = bnxt_re_del_gid;
498 ibdev->get_link_layer = bnxt_re_get_link_layer;
499
500 ibdev->alloc_pd = bnxt_re_alloc_pd;
501 ibdev->dealloc_pd = bnxt_re_dealloc_pd;
502
503 ibdev->create_ah = bnxt_re_create_ah;
504 ibdev->modify_ah = bnxt_re_modify_ah;
505 ibdev->query_ah = bnxt_re_query_ah;
506 ibdev->destroy_ah = bnxt_re_destroy_ah;
507
508 ibdev->create_qp = bnxt_re_create_qp;
509 ibdev->modify_qp = bnxt_re_modify_qp;
510 ibdev->query_qp = bnxt_re_query_qp;
511 ibdev->destroy_qp = bnxt_re_destroy_qp;
512
513 ibdev->post_send = bnxt_re_post_send;
514 ibdev->post_recv = bnxt_re_post_recv;
515
516 ibdev->create_cq = bnxt_re_create_cq;
517 ibdev->destroy_cq = bnxt_re_destroy_cq;
518 ibdev->poll_cq = bnxt_re_poll_cq;
519 ibdev->req_notify_cq = bnxt_re_req_notify_cq;
520
521 ibdev->get_dma_mr = bnxt_re_get_dma_mr;
522 ibdev->dereg_mr = bnxt_re_dereg_mr;
523 ibdev->alloc_mr = bnxt_re_alloc_mr;
524 ibdev->map_mr_sg = bnxt_re_map_mr_sg;
525
526 ibdev->reg_user_mr = bnxt_re_reg_user_mr;
527 ibdev->alloc_ucontext = bnxt_re_alloc_ucontext;
528 ibdev->dealloc_ucontext = bnxt_re_dealloc_ucontext;
529 ibdev->mmap = bnxt_re_mmap;
530 ibdev->get_hw_stats = bnxt_re_ib_get_hw_stats;
531 ibdev->alloc_hw_stats = bnxt_re_ib_alloc_hw_stats;
532
533 return ib_register_device(ibdev, NULL);
534}
535
536static ssize_t show_rev(struct device *device, struct device_attribute *attr,
537 char *buf)
538{
539 struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
540
541 return scnprintf(buf, PAGE_SIZE, "0x%x\n", rdev->en_dev->pdev->vendor);
542}
543
544static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
545 char *buf)
546{
547 struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
548
549 return scnprintf(buf, PAGE_SIZE, "%s\n", rdev->dev_attr.fw_ver);
550}
551
552static ssize_t show_hca(struct device *device, struct device_attribute *attr,
553 char *buf)
554{
555 struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
556
557 return scnprintf(buf, PAGE_SIZE, "%s\n", rdev->ibdev.node_desc);
558}
559
560static DEVICE_ATTR(hw_rev, 0444, show_rev, NULL);
561static DEVICE_ATTR(fw_rev, 0444, show_fw_ver, NULL);
562static DEVICE_ATTR(hca_type, 0444, show_hca, NULL);
563
564static struct device_attribute *bnxt_re_attributes[] = {
565 &dev_attr_hw_rev,
566 &dev_attr_fw_rev,
567 &dev_attr_hca_type
568};
569
570static void bnxt_re_dev_remove(struct bnxt_re_dev *rdev)
571{
572 dev_put(rdev->netdev);
573 rdev->netdev = NULL;
574
575 mutex_lock(&bnxt_re_dev_lock);
576 list_del_rcu(&rdev->list);
577 mutex_unlock(&bnxt_re_dev_lock);
578
579 synchronize_rcu();
580 flush_workqueue(bnxt_re_wq);
581
582 ib_dealloc_device(&rdev->ibdev);
583
584}
585
586static struct bnxt_re_dev *bnxt_re_dev_add(struct net_device *netdev,
587 struct bnxt_en_dev *en_dev)
588{
589 struct bnxt_re_dev *rdev;
590
591
592 rdev = (struct bnxt_re_dev *)ib_alloc_device(sizeof(*rdev));
593 if (!rdev) {
594 dev_err(NULL, "%s: bnxt_re_dev allocation failure!",
595 ROCE_DRV_MODULE_NAME);
596 return NULL;
597 }
598
599 rdev->netdev = netdev;
600 dev_hold(rdev->netdev);
601 rdev->en_dev = en_dev;
602 rdev->id = rdev->en_dev->pdev->devfn;
603 INIT_LIST_HEAD(&rdev->qp_list);
604 mutex_init(&rdev->qp_lock);
605 atomic_set(&rdev->qp_count, 0);
606 atomic_set(&rdev->cq_count, 0);
607 atomic_set(&rdev->srq_count, 0);
608 atomic_set(&rdev->mr_count, 0);
609 atomic_set(&rdev->mw_count, 0);
610 rdev->cosq[0] = 0xFFFF;
611 rdev->cosq[1] = 0xFFFF;
612
613 mutex_lock(&bnxt_re_dev_lock);
614 list_add_tail_rcu(&rdev->list, &bnxt_re_dev_list);
615 mutex_unlock(&bnxt_re_dev_lock);
616 return rdev;
617}
618
619static int bnxt_re_aeq_handler(struct bnxt_qplib_rcfw *rcfw,
620 struct creq_func_event *aeqe)
621{
622 switch (aeqe->event) {
623 case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR:
624 break;
625 case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR:
626 break;
627 case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR:
628 break;
629 case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR:
630 break;
631 case CREQ_FUNC_EVENT_EVENT_CQ_ERROR:
632 break;
633 case CREQ_FUNC_EVENT_EVENT_TQM_ERROR:
634 break;
635 case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR:
636 break;
637 case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR:
638 break;
639 case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR:
640 break;
641 case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR:
642 break;
643 case CREQ_FUNC_EVENT_EVENT_TIM_ERROR:
644 break;
645 default:
646 return -EINVAL;
647 }
648 return 0;
649}
650
651static int bnxt_re_cqn_handler(struct bnxt_qplib_nq *nq,
652 struct bnxt_qplib_cq *handle)
653{
654 struct bnxt_re_cq *cq = container_of(handle, struct bnxt_re_cq,
655 qplib_cq);
656
657 if (!cq) {
658 dev_err(NULL, "%s: CQ is NULL, CQN not handled",
659 ROCE_DRV_MODULE_NAME);
660 return -EINVAL;
661 }
662 if (cq->ib_cq.comp_handler) {
663
664 (*cq->ib_cq.comp_handler)(&cq->ib_cq, cq->ib_cq.cq_context);
665 }
666
667 return 0;
668}
669
670static void bnxt_re_cleanup_res(struct bnxt_re_dev *rdev)
671{
672 int i;
673
674 if (rdev->nq[0].hwq.max_elements) {
675 for (i = 1; i < rdev->num_msix; i++)
676 bnxt_qplib_disable_nq(&rdev->nq[i - 1]);
677 }
678
679 if (rdev->qplib_res.rcfw)
680 bnxt_qplib_cleanup_res(&rdev->qplib_res);
681}
682
683static int bnxt_re_init_res(struct bnxt_re_dev *rdev)
684{
685 int rc = 0, i;
686
687 bnxt_qplib_init_res(&rdev->qplib_res);
688
689 for (i = 1; i < rdev->num_msix ; i++) {
690 rc = bnxt_qplib_enable_nq(rdev->en_dev->pdev, &rdev->nq[i - 1],
691 i - 1, rdev->msix_entries[i].vector,
692 rdev->msix_entries[i].db_offset,
693 &bnxt_re_cqn_handler, NULL);
694
695 if (rc) {
696 dev_err(rdev_to_dev(rdev),
697 "Failed to enable NQ with rc = 0x%x", rc);
698 goto fail;
699 }
700 }
701 return 0;
702fail:
703 return rc;
704}
705
706static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev, bool lock_wait)
707{
708 int i;
709
710 for (i = 0; i < rdev->num_msix - 1; i++) {
711 bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, lock_wait);
712 bnxt_qplib_free_nq(&rdev->nq[i]);
713 }
714}
715
716static void bnxt_re_free_res(struct bnxt_re_dev *rdev, bool lock_wait)
717{
718 bnxt_re_free_nq_res(rdev, lock_wait);
719
720 if (rdev->qplib_res.dpi_tbl.max) {
721 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
722 &rdev->qplib_res.dpi_tbl,
723 &rdev->dpi_privileged);
724 }
725 if (rdev->qplib_res.rcfw) {
726 bnxt_qplib_free_res(&rdev->qplib_res);
727 rdev->qplib_res.rcfw = NULL;
728 }
729}
730
731static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
732{
733 int rc = 0, i;
734
735
736 rdev->qplib_res.rcfw = &rdev->rcfw;
737 rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr);
738 if (rc)
739 goto fail;
740
741 rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev,
742 rdev->netdev, &rdev->dev_attr);
743 if (rc)
744 goto fail;
745
746 rc = bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl,
747 &rdev->dpi_privileged,
748 rdev);
749 if (rc)
750 goto dealloc_res;
751
752 for (i = 0; i < rdev->num_msix - 1; i++) {
753 rdev->nq[i].hwq.max_elements = BNXT_RE_MAX_CQ_COUNT +
754 BNXT_RE_MAX_SRQC_COUNT + 2;
755 rc = bnxt_qplib_alloc_nq(rdev->en_dev->pdev, &rdev->nq[i]);
756 if (rc) {
757 dev_err(rdev_to_dev(rdev), "Alloc Failed NQ%d rc:%#x",
758 i, rc);
759 goto dealloc_dpi;
760 }
761 rc = bnxt_re_net_ring_alloc
762 (rdev, rdev->nq[i].hwq.pbl[PBL_LVL_0].pg_map_arr,
763 rdev->nq[i].hwq.pbl[rdev->nq[i].hwq.level].pg_count,
764 HWRM_RING_ALLOC_CMPL,
765 BNXT_QPLIB_NQE_MAX_CNT - 1,
766 rdev->msix_entries[i + 1].ring_idx,
767 &rdev->nq[i].ring_id);
768 if (rc) {
769 dev_err(rdev_to_dev(rdev),
770 "Failed to allocate NQ fw id with rc = 0x%x",
771 rc);
772 goto free_nq;
773 }
774 }
775 return 0;
776free_nq:
777 for (i = 0; i < rdev->num_msix - 1; i++)
778 bnxt_qplib_free_nq(&rdev->nq[i]);
779dealloc_dpi:
780 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
781 &rdev->qplib_res.dpi_tbl,
782 &rdev->dpi_privileged);
783dealloc_res:
784 bnxt_qplib_free_res(&rdev->qplib_res);
785
786fail:
787 rdev->qplib_res.rcfw = NULL;
788 return rc;
789}
790
791static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
792 u8 port_num, enum ib_event_type event)
793{
794 struct ib_event ib_event;
795
796 ib_event.device = ibdev;
797 if (qp)
798 ib_event.element.qp = qp;
799 else
800 ib_event.element.port_num = port_num;
801 ib_event.event = event;
802 ib_dispatch_event(&ib_event);
803}
804
805#define HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN 0x02
806static int bnxt_re_query_hwrm_pri2cos(struct bnxt_re_dev *rdev, u8 dir,
807 u64 *cid_map)
808{
809 struct hwrm_queue_pri2cos_qcfg_input req = {0};
810 struct bnxt *bp = netdev_priv(rdev->netdev);
811 struct hwrm_queue_pri2cos_qcfg_output resp;
812 struct bnxt_en_dev *en_dev = rdev->en_dev;
813 struct bnxt_fw_msg fw_msg;
814 u32 flags = 0;
815 u8 *qcfgmap, *tmp_map;
816 int rc = 0, i;
817
818 if (!cid_map)
819 return -EINVAL;
820
821 memset(&fw_msg, 0, sizeof(fw_msg));
822 bnxt_re_init_hwrm_hdr(rdev, (void *)&req,
823 HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
824 flags |= (dir & 0x01);
825 flags |= HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN;
826 req.flags = cpu_to_le32(flags);
827 req.port_id = bp->pf.port_id;
828
829 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
830 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
831 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
832 if (rc)
833 return rc;
834
835 if (resp.queue_cfg_info) {
836 dev_warn(rdev_to_dev(rdev),
837 "Asymmetric cos queue configuration detected");
838 dev_warn(rdev_to_dev(rdev),
839 " on device, QoS may not be fully functional\n");
840 }
841 qcfgmap = &resp.pri0_cos_queue_id;
842 tmp_map = (u8 *)cid_map;
843 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
844 tmp_map[i] = qcfgmap[i];
845
846 return rc;
847}
848
849static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev,
850 struct bnxt_re_qp *qp)
851{
852 return (qp->ib_qp.qp_type == IB_QPT_GSI) || (qp == rdev->qp1_sqp);
853}
854
855static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev)
856{
857 int mask = IB_QP_STATE;
858 struct ib_qp_attr qp_attr;
859 struct bnxt_re_qp *qp;
860
861 qp_attr.qp_state = IB_QPS_ERR;
862 mutex_lock(&rdev->qp_lock);
863 list_for_each_entry(qp, &rdev->qp_list, list) {
864
865 if (!bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) {
866 if (qp->qplib_qp.state !=
867 CMDQ_MODIFY_QP_NEW_STATE_RESET &&
868 qp->qplib_qp.state !=
869 CMDQ_MODIFY_QP_NEW_STATE_ERR) {
870 bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp,
871 1, IB_EVENT_QP_FATAL);
872 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask,
873 NULL);
874 }
875 }
876 }
877 mutex_unlock(&rdev->qp_lock);
878}
879
880static int bnxt_re_update_gid(struct bnxt_re_dev *rdev)
881{
882 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
883 struct bnxt_qplib_gid gid;
884 u16 gid_idx, index;
885 int rc = 0;
886
887 if (!test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
888 return 0;
889
890 if (!sgid_tbl) {
891 dev_err(rdev_to_dev(rdev), "QPLIB: SGID table not allocated");
892 return -EINVAL;
893 }
894
895 for (index = 0; index < sgid_tbl->active; index++) {
896 gid_idx = sgid_tbl->hw_id[index];
897
898 if (!memcmp(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
899 sizeof(bnxt_qplib_gid_zero)))
900 continue;
901
902
903
904 if (sgid_tbl->vlan[index])
905 continue;
906
907 memcpy(&gid, &sgid_tbl->tbl[index], sizeof(gid));
908
909 rc = bnxt_qplib_update_sgid(sgid_tbl, &gid, gid_idx,
910 rdev->qplib_res.netdev->dev_addr);
911 }
912
913 return rc;
914}
915
916static u32 bnxt_re_get_priority_mask(struct bnxt_re_dev *rdev)
917{
918 u32 prio_map = 0, tmp_map = 0;
919 struct net_device *netdev;
920 struct dcb_app app;
921
922 netdev = rdev->netdev;
923
924 memset(&app, 0, sizeof(app));
925 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
926 app.protocol = ETH_P_IBOE;
927 tmp_map = dcb_ieee_getapp_mask(netdev, &app);
928 prio_map = tmp_map;
929
930 app.selector = IEEE_8021QAZ_APP_SEL_DGRAM;
931 app.protocol = ROCE_V2_UDP_DPORT;
932 tmp_map = dcb_ieee_getapp_mask(netdev, &app);
933 prio_map |= tmp_map;
934
935 return prio_map;
936}
937
938static void bnxt_re_parse_cid_map(u8 prio_map, u8 *cid_map, u16 *cosq)
939{
940 u16 prio;
941 u8 id;
942
943 for (prio = 0, id = 0; prio < 8; prio++) {
944 if (prio_map & (1 << prio)) {
945 cosq[id] = cid_map[prio];
946 id++;
947 if (id == 2)
948 break;
949 }
950 }
951}
952
953static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
954{
955 u8 prio_map = 0;
956 u64 cid_map;
957 int rc;
958
959
960 prio_map = bnxt_re_get_priority_mask(rdev);
961
962 if (prio_map == rdev->cur_prio_map)
963 return 0;
964 rdev->cur_prio_map = prio_map;
965
966 rc = bnxt_re_query_hwrm_pri2cos(rdev, 0, &cid_map);
967 if (rc) {
968 dev_warn(rdev_to_dev(rdev), "no cos for p_mask %x\n", prio_map);
969 return rc;
970 }
971
972 bnxt_re_parse_cid_map(prio_map, (u8 *)&cid_map, rdev->cosq);
973
974
975 rc = bnxt_qplib_map_tc2cos(&rdev->qplib_res, rdev->cosq);
976 if (rc) {
977 dev_warn(rdev_to_dev(rdev), "no tc for cos{%x, %x}\n",
978 rdev->cosq[0], rdev->cosq[1]);
979 return rc;
980 }
981
982
983
984
985 if ((prio_map == 0 && rdev->qplib_res.prio) ||
986 (prio_map != 0 && !rdev->qplib_res.prio)) {
987 rdev->qplib_res.prio = prio_map ? true : false;
988
989 bnxt_re_update_gid(rdev);
990 }
991
992 return 0;
993}
994
995static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
996{
997 int i, rc;
998
999 if (test_and_clear_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) {
1000 for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++)
1001 device_remove_file(&rdev->ibdev.dev,
1002 bnxt_re_attributes[i]);
1003
1004 bnxt_re_unregister_ib(rdev);
1005 }
1006 if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
1007 cancel_delayed_work(&rdev->worker);
1008
1009 bnxt_re_cleanup_res(rdev);
1010 bnxt_re_free_res(rdev, lock_wait);
1011
1012 if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) {
1013 rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw);
1014 if (rc)
1015 dev_warn(rdev_to_dev(rdev),
1016 "Failed to deinitialize RCFW: %#x", rc);
1017 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id,
1018 lock_wait);
1019 bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1020 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1021 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, lock_wait);
1022 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1023 }
1024 if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags)) {
1025 rc = bnxt_re_free_msix(rdev, lock_wait);
1026 if (rc)
1027 dev_warn(rdev_to_dev(rdev),
1028 "Failed to free MSI-X vectors: %#x", rc);
1029 }
1030 if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags)) {
1031 rc = bnxt_re_unregister_netdev(rdev, lock_wait);
1032 if (rc)
1033 dev_warn(rdev_to_dev(rdev),
1034 "Failed to unregister with netdev: %#x", rc);
1035 }
1036}
1037
1038static void bnxt_re_set_resource_limits(struct bnxt_re_dev *rdev)
1039{
1040 u32 i;
1041
1042 rdev->qplib_ctx.qpc_count = BNXT_RE_MAX_QPC_COUNT;
1043 rdev->qplib_ctx.mrw_count = BNXT_RE_MAX_MRW_COUNT;
1044 rdev->qplib_ctx.srqc_count = BNXT_RE_MAX_SRQC_COUNT;
1045 rdev->qplib_ctx.cq_count = BNXT_RE_MAX_CQ_COUNT;
1046 for (i = 0; i < MAX_TQM_ALLOC_REQ; i++)
1047 rdev->qplib_ctx.tqm_count[i] =
1048 rdev->dev_attr.tqm_alloc_reqs[i];
1049}
1050
1051
1052static void bnxt_re_worker(struct work_struct *work)
1053{
1054 struct bnxt_re_dev *rdev = container_of(work, struct bnxt_re_dev,
1055 worker.work);
1056
1057 bnxt_re_setup_qos(rdev);
1058 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1059}
1060
1061static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
1062{
1063 int i, j, rc;
1064
1065
1066 rc = bnxt_re_register_netdev(rdev);
1067 if (rc) {
1068 pr_err("Failed to register with netedev: %#x\n", rc);
1069 return -EINVAL;
1070 }
1071 set_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags);
1072
1073 rc = bnxt_re_request_msix(rdev);
1074 if (rc) {
1075 pr_err("Failed to get MSI-X vectors: %#x\n", rc);
1076 rc = -EINVAL;
1077 goto fail;
1078 }
1079 set_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags);
1080
1081
1082
1083
1084 rc = bnxt_qplib_alloc_rcfw_channel(rdev->en_dev->pdev, &rdev->rcfw,
1085 BNXT_RE_MAX_QPC_COUNT);
1086 if (rc) {
1087 pr_err("Failed to allocate RCFW Channel: %#x\n", rc);
1088 goto fail;
1089 }
1090 rc = bnxt_re_net_ring_alloc
1091 (rdev, rdev->rcfw.creq.pbl[PBL_LVL_0].pg_map_arr,
1092 rdev->rcfw.creq.pbl[rdev->rcfw.creq.level].pg_count,
1093 HWRM_RING_ALLOC_CMPL, BNXT_QPLIB_CREQE_MAX_CNT - 1,
1094 rdev->msix_entries[BNXT_RE_AEQ_IDX].ring_idx,
1095 &rdev->rcfw.creq_ring_id);
1096 if (rc) {
1097 pr_err("Failed to allocate CREQ: %#x\n", rc);
1098 goto free_rcfw;
1099 }
1100 rc = bnxt_qplib_enable_rcfw_channel
1101 (rdev->en_dev->pdev, &rdev->rcfw,
1102 rdev->msix_entries[BNXT_RE_AEQ_IDX].vector,
1103 rdev->msix_entries[BNXT_RE_AEQ_IDX].db_offset,
1104 0, &bnxt_re_aeq_handler);
1105 if (rc) {
1106 pr_err("Failed to enable RCFW channel: %#x\n", rc);
1107 goto free_ring;
1108 }
1109
1110 rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr);
1111 if (rc)
1112 goto disable_rcfw;
1113 bnxt_re_set_resource_limits(rdev);
1114
1115 rc = bnxt_qplib_alloc_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx, 0);
1116 if (rc) {
1117 pr_err("Failed to allocate QPLIB context: %#x\n", rc);
1118 goto disable_rcfw;
1119 }
1120 rc = bnxt_re_net_stats_ctx_alloc(rdev,
1121 rdev->qplib_ctx.stats.dma_map,
1122 &rdev->qplib_ctx.stats.fw_id);
1123 if (rc) {
1124 pr_err("Failed to allocate stats context: %#x\n", rc);
1125 goto free_ctx;
1126 }
1127
1128 rc = bnxt_qplib_init_rcfw(&rdev->rcfw, &rdev->qplib_ctx, 0);
1129 if (rc) {
1130 pr_err("Failed to initialize RCFW: %#x\n", rc);
1131 goto free_sctx;
1132 }
1133 set_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags);
1134
1135
1136 rc = bnxt_re_alloc_res(rdev);
1137 if (rc) {
1138 pr_err("Failed to allocate resources: %#x\n", rc);
1139 goto fail;
1140 }
1141 rc = bnxt_re_init_res(rdev);
1142 if (rc) {
1143 pr_err("Failed to initialize resources: %#x\n", rc);
1144 goto fail;
1145 }
1146
1147 rc = bnxt_re_setup_qos(rdev);
1148 if (rc)
1149 pr_info("RoCE priority not yet configured\n");
1150
1151 INIT_DELAYED_WORK(&rdev->worker, bnxt_re_worker);
1152 set_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags);
1153 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1154
1155
1156 rc = bnxt_re_register_ib(rdev);
1157 if (rc) {
1158 pr_err("Failed to register with IB: %#x\n", rc);
1159 goto fail;
1160 }
1161 dev_info(rdev_to_dev(rdev), "Device registered successfully");
1162 for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++) {
1163 rc = device_create_file(&rdev->ibdev.dev,
1164 bnxt_re_attributes[i]);
1165 if (rc) {
1166 dev_err(rdev_to_dev(rdev),
1167 "Failed to create IB sysfs: %#x", rc);
1168
1169 for (j = 0; j < i; j++)
1170 device_remove_file(&rdev->ibdev.dev,
1171 bnxt_re_attributes[j]);
1172 bnxt_re_unregister_ib(rdev);
1173 goto fail;
1174 }
1175 }
1176 set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
1177 ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1178 &rdev->active_width);
1179 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE);
1180 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_GID_CHANGE);
1181
1182 return 0;
1183free_sctx:
1184 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id, true);
1185free_ctx:
1186 bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1187disable_rcfw:
1188 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1189free_ring:
1190 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, true);
1191free_rcfw:
1192 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1193fail:
1194 bnxt_re_ib_unreg(rdev, true);
1195 return rc;
1196}
1197
1198static void bnxt_re_dev_unreg(struct bnxt_re_dev *rdev)
1199{
1200 struct bnxt_en_dev *en_dev = rdev->en_dev;
1201 struct net_device *netdev = rdev->netdev;
1202
1203 bnxt_re_dev_remove(rdev);
1204
1205 if (netdev)
1206 bnxt_re_dev_unprobe(netdev, en_dev);
1207}
1208
1209static int bnxt_re_dev_reg(struct bnxt_re_dev **rdev, struct net_device *netdev)
1210{
1211 struct bnxt_en_dev *en_dev;
1212 int rc = 0;
1213
1214 if (!is_bnxt_re_dev(netdev))
1215 return -ENODEV;
1216
1217 en_dev = bnxt_re_dev_probe(netdev);
1218 if (IS_ERR(en_dev)) {
1219 if (en_dev != ERR_PTR(-ENODEV))
1220 pr_err("%s: Failed to probe\n", ROCE_DRV_MODULE_NAME);
1221 rc = PTR_ERR(en_dev);
1222 goto exit;
1223 }
1224 *rdev = bnxt_re_dev_add(netdev, en_dev);
1225 if (!*rdev) {
1226 rc = -ENOMEM;
1227 bnxt_re_dev_unprobe(netdev, en_dev);
1228 goto exit;
1229 }
1230exit:
1231 return rc;
1232}
1233
1234static void bnxt_re_remove_one(struct bnxt_re_dev *rdev)
1235{
1236 pci_dev_put(rdev->en_dev->pdev);
1237}
1238
1239
1240static void bnxt_re_task(struct work_struct *work)
1241{
1242 struct bnxt_re_work *re_work;
1243 struct bnxt_re_dev *rdev;
1244 int rc = 0;
1245
1246 re_work = container_of(work, struct bnxt_re_work, work);
1247 rdev = re_work->rdev;
1248
1249 if (re_work->event != NETDEV_REGISTER &&
1250 !test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
1251 return;
1252
1253 switch (re_work->event) {
1254 case NETDEV_REGISTER:
1255 rc = bnxt_re_ib_reg(rdev);
1256 if (rc)
1257 dev_err(rdev_to_dev(rdev),
1258 "Failed to register with IB: %#x", rc);
1259 break;
1260 case NETDEV_UP:
1261 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1262 IB_EVENT_PORT_ACTIVE);
1263 break;
1264 case NETDEV_DOWN:
1265 bnxt_re_dev_stop(rdev);
1266 break;
1267 case NETDEV_CHANGE:
1268 if (!netif_carrier_ok(rdev->netdev))
1269 bnxt_re_dev_stop(rdev);
1270 else if (netif_carrier_ok(rdev->netdev))
1271 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1272 IB_EVENT_PORT_ACTIVE);
1273 ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1274 &rdev->active_width);
1275 break;
1276 default:
1277 break;
1278 }
1279 smp_mb__before_atomic();
1280 clear_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags);
1281 kfree(re_work);
1282}
1283
1284static void bnxt_re_init_one(struct bnxt_re_dev *rdev)
1285{
1286 pci_dev_get(rdev->en_dev->pdev);
1287}
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303static int bnxt_re_netdev_event(struct notifier_block *notifier,
1304 unsigned long event, void *ptr)
1305{
1306 struct net_device *real_dev, *netdev = netdev_notifier_info_to_dev(ptr);
1307 struct bnxt_re_work *re_work;
1308 struct bnxt_re_dev *rdev;
1309 int rc = 0;
1310 bool sch_work = false;
1311
1312 real_dev = rdma_vlan_dev_real_dev(netdev);
1313 if (!real_dev)
1314 real_dev = netdev;
1315
1316 rdev = bnxt_re_from_netdev(real_dev);
1317 if (!rdev && event != NETDEV_REGISTER)
1318 goto exit;
1319 if (real_dev != netdev)
1320 goto exit;
1321
1322 switch (event) {
1323 case NETDEV_REGISTER:
1324 if (rdev)
1325 break;
1326 rc = bnxt_re_dev_reg(&rdev, real_dev);
1327 if (rc == -ENODEV)
1328 break;
1329 if (rc) {
1330 pr_err("Failed to register with the device %s: %#x\n",
1331 real_dev->name, rc);
1332 break;
1333 }
1334 bnxt_re_init_one(rdev);
1335 sch_work = true;
1336 break;
1337
1338 case NETDEV_UNREGISTER:
1339
1340
1341
1342 if (test_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags))
1343 goto exit;
1344 bnxt_re_ib_unreg(rdev, false);
1345 bnxt_re_remove_one(rdev);
1346 bnxt_re_dev_unreg(rdev);
1347 break;
1348
1349 default:
1350 sch_work = true;
1351 break;
1352 }
1353 if (sch_work) {
1354
1355 re_work = kzalloc(sizeof(*re_work), GFP_ATOMIC);
1356 if (re_work) {
1357 re_work->rdev = rdev;
1358 re_work->event = event;
1359 re_work->vlan_dev = (real_dev == netdev ?
1360 NULL : netdev);
1361 INIT_WORK(&re_work->work, bnxt_re_task);
1362 set_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags);
1363 queue_work(bnxt_re_wq, &re_work->work);
1364 }
1365 }
1366
1367exit:
1368 return NOTIFY_DONE;
1369}
1370
1371static struct notifier_block bnxt_re_netdev_notifier = {
1372 .notifier_call = bnxt_re_netdev_event
1373};
1374
1375static int __init bnxt_re_mod_init(void)
1376{
1377 int rc = 0;
1378
1379 pr_info("%s: %s", ROCE_DRV_MODULE_NAME, version);
1380
1381 bnxt_re_wq = create_singlethread_workqueue("bnxt_re");
1382 if (!bnxt_re_wq)
1383 return -ENOMEM;
1384
1385 INIT_LIST_HEAD(&bnxt_re_dev_list);
1386
1387 rc = register_netdevice_notifier(&bnxt_re_netdev_notifier);
1388 if (rc) {
1389 pr_err("%s: Cannot register to netdevice_notifier",
1390 ROCE_DRV_MODULE_NAME);
1391 goto err_netdev;
1392 }
1393 return 0;
1394
1395err_netdev:
1396 destroy_workqueue(bnxt_re_wq);
1397
1398 return rc;
1399}
1400
1401static void __exit bnxt_re_mod_exit(void)
1402{
1403 struct bnxt_re_dev *rdev;
1404 LIST_HEAD(to_be_deleted);
1405
1406 mutex_lock(&bnxt_re_dev_lock);
1407
1408 if (!list_empty(&bnxt_re_dev_list))
1409 list_splice_init(&bnxt_re_dev_list, &to_be_deleted);
1410 mutex_unlock(&bnxt_re_dev_lock);
1411
1412 list_for_each_entry(rdev, &to_be_deleted, list) {
1413 dev_info(rdev_to_dev(rdev), "Unregistering Device");
1414 bnxt_re_dev_stop(rdev);
1415 bnxt_re_ib_unreg(rdev, true);
1416 bnxt_re_remove_one(rdev);
1417 bnxt_re_dev_unreg(rdev);
1418 }
1419 unregister_netdevice_notifier(&bnxt_re_netdev_notifier);
1420 if (bnxt_re_wq)
1421 destroy_workqueue(bnxt_re_wq);
1422}
1423
1424module_init(bnxt_re_mod_init);
1425module_exit(bnxt_re_mod_exit);
1426
