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x86/intel_rdt: Fix incorrect returned value when creating rdgroup sub-directory in...
[cris-mirror.git] / drivers / infiniband / hw / bnxt_re / main.c
blob508d00a5a1066cabd3e6ac7fc4855abbf19235e8
1 /*
2 * Broadcom NetXtreme-E RoCE driver.
3 *
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Description: Main component of the bnxt_re driver
37 */
38
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
69 static char version[] =
70 BNXT_RE_DESC " v" ROCE_DRV_MODULE_VERSION "\n";
71
72 MODULE_AUTHOR("Eddie Wai <eddie.wai@broadcom.com>");
73 MODULE_DESCRIPTION(BNXT_RE_DESC " Driver");
74 MODULE_LICENSE("Dual BSD/GPL");
75
76 /* globals */
77 static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list);
78 /* Mutex to protect the list of bnxt_re devices added */
79 static DEFINE_MUTEX(bnxt_re_dev_lock);
80 static struct workqueue_struct *bnxt_re_wq;
81 static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait);
82
83 /* SR-IOV helper functions */
84
85 static void bnxt_re_get_sriov_func_type(struct bnxt_re_dev *rdev)
86 {
87 struct bnxt *bp;
88
89 bp = netdev_priv(rdev->en_dev->net);
90 if (BNXT_VF(bp))
91 rdev->is_virtfn = 1;
92 }
93
94 /* Set the maximum number of each resource that the driver actually wants
95 * to allocate. This may be up to the maximum number the firmware has
96 * reserved for the function. The driver may choose to allocate fewer
97 * resources than the firmware maximum.
98 */
99 static void bnxt_re_set_resource_limits(struct bnxt_re_dev *rdev)
100 {
101 u32 vf_qps = 0, vf_srqs = 0, vf_cqs = 0, vf_mrws = 0, vf_gids = 0;
102 u32 i;
103 u32 vf_pct;
104 u32 num_vfs;
105 struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
106
107 rdev->qplib_ctx.qpc_count = min_t(u32, BNXT_RE_MAX_QPC_COUNT,
108 dev_attr->max_qp);
109
110 rdev->qplib_ctx.mrw_count = BNXT_RE_MAX_MRW_COUNT_256K;
111 /* Use max_mr from fw since max_mrw does not get set */
112 rdev->qplib_ctx.mrw_count = min_t(u32, rdev->qplib_ctx.mrw_count,
113 dev_attr->max_mr);
114 rdev->qplib_ctx.srqc_count = min_t(u32, BNXT_RE_MAX_SRQC_COUNT,
115 dev_attr->max_srq);
116 rdev->qplib_ctx.cq_count = min_t(u32, BNXT_RE_MAX_CQ_COUNT,
117 dev_attr->max_cq);
118
119 for (i = 0; i < MAX_TQM_ALLOC_REQ; i++)
120 rdev->qplib_ctx.tqm_count[i] =
121 rdev->dev_attr.tqm_alloc_reqs[i];
122
123 if (rdev->num_vfs) {
124 /*
125 * Reserve a set of resources for the PF. Divide the remaining
126 * resources among the VFs
127 */
128 vf_pct = 100 - BNXT_RE_PCT_RSVD_FOR_PF;
129 num_vfs = 100 * rdev->num_vfs;
130 vf_qps = (rdev->qplib_ctx.qpc_count * vf_pct) / num_vfs;
131 vf_srqs = (rdev->qplib_ctx.srqc_count * vf_pct) / num_vfs;
132 vf_cqs = (rdev->qplib_ctx.cq_count * vf_pct) / num_vfs;
133 /*
134 * The driver allows many more MRs than other resources. If the
135 * firmware does also, then reserve a fixed amount for the PF
136 * and divide the rest among VFs. VFs may use many MRs for NFS
137 * mounts, ISER, NVME applications, etc. If the firmware
138 * severely restricts the number of MRs, then let PF have
139 * half and divide the rest among VFs, as for the other
140 * resource types.
141 */
142 if (rdev->qplib_ctx.mrw_count < BNXT_RE_MAX_MRW_COUNT_64K)
143 vf_mrws = rdev->qplib_ctx.mrw_count * vf_pct / num_vfs;
144 else
145 vf_mrws = (rdev->qplib_ctx.mrw_count -
146 BNXT_RE_RESVD_MR_FOR_PF) / rdev->num_vfs;
147 vf_gids = BNXT_RE_MAX_GID_PER_VF;
148 }
149 rdev->qplib_ctx.vf_res.max_mrw_per_vf = vf_mrws;
150 rdev->qplib_ctx.vf_res.max_gid_per_vf = vf_gids;
151 rdev->qplib_ctx.vf_res.max_qp_per_vf = vf_qps;
152 rdev->qplib_ctx.vf_res.max_srq_per_vf = vf_srqs;
153 rdev->qplib_ctx.vf_res.max_cq_per_vf = vf_cqs;
154 }
155
156 /* for handling bnxt_en callbacks later */
157 static void bnxt_re_stop(void *p)
158 {
159 }
160
161 static void bnxt_re_start(void *p)
162 {
163 }
164
165 static void bnxt_re_sriov_config(void *p, int num_vfs)
166 {
167 struct bnxt_re_dev *rdev = p;
168
169 if (!rdev)
170 return;
171
172 rdev->num_vfs = num_vfs;
173 bnxt_re_set_resource_limits(rdev);
174 bnxt_qplib_set_func_resources(&rdev->qplib_res, &rdev->rcfw,
175 &rdev->qplib_ctx);
176 }
177
178 static void bnxt_re_shutdown(void *p)
179 {
180 struct bnxt_re_dev *rdev = p;
181
182 if (!rdev)
183 return;
184
185 bnxt_re_ib_unreg(rdev, false);
186 }
187
188 static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
189 .ulp_async_notifier = NULL,
190 .ulp_stop = bnxt_re_stop,
191 .ulp_start = bnxt_re_start,
192 .ulp_sriov_config = bnxt_re_sriov_config,
193 .ulp_shutdown = bnxt_re_shutdown
194 };
195
196 /* RoCE -> Net driver */
197
198 /* Driver registration routines used to let the networking driver (bnxt_en)
199 * to know that the RoCE driver is now installed
200 */
201 static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev, bool lock_wait)
202 {
203 struct bnxt_en_dev *en_dev;
204 int rc;
205
206 if (!rdev)
207 return -EINVAL;
208
209 en_dev = rdev->en_dev;
210 /* Acquire rtnl lock if it is not invokded from netdev event */
211 if (lock_wait)
212 rtnl_lock();
213
214 rc = en_dev->en_ops->bnxt_unregister_device(rdev->en_dev,
215 BNXT_ROCE_ULP);
216 if (lock_wait)
217 rtnl_unlock();
218 return rc;
219 }
220
221 static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev)
222 {
223 struct bnxt_en_dev *en_dev;
224 int rc = 0;
225
226 if (!rdev)
227 return -EINVAL;
228
229 en_dev = rdev->en_dev;
230
231 rtnl_lock();
232 rc = en_dev->en_ops->bnxt_register_device(en_dev, BNXT_ROCE_ULP,
233 &bnxt_re_ulp_ops, rdev);
234 rtnl_unlock();
235 return rc;
236 }
237
238 static int bnxt_re_free_msix(struct bnxt_re_dev *rdev, bool lock_wait)
239 {
240 struct bnxt_en_dev *en_dev;
241 int rc;
242
243 if (!rdev)
244 return -EINVAL;
245
246 en_dev = rdev->en_dev;
247
248 if (lock_wait)
249 rtnl_lock();
250
251 rc = en_dev->en_ops->bnxt_free_msix(rdev->en_dev, BNXT_ROCE_ULP);
252
253 if (lock_wait)
254 rtnl_unlock();
255 return rc;
256 }
257
258 static int bnxt_re_request_msix(struct bnxt_re_dev *rdev)
259 {
260 int rc = 0, num_msix_want = BNXT_RE_MAX_MSIX, num_msix_got;
261 struct bnxt_en_dev *en_dev;
262
263 if (!rdev)
264 return -EINVAL;
265
266 en_dev = rdev->en_dev;
267
268 num_msix_want = min_t(u32, BNXT_RE_MAX_MSIX, num_online_cpus());
269
270 rtnl_lock();
271 num_msix_got = en_dev->en_ops->bnxt_request_msix(en_dev, BNXT_ROCE_ULP,
272 rdev->msix_entries,
273 num_msix_want);
274 if (num_msix_got < BNXT_RE_MIN_MSIX) {
275 rc = -EINVAL;
276 goto done;
277 }
278 if (num_msix_got != num_msix_want) {
279 dev_warn(rdev_to_dev(rdev),
280 "Requested %d MSI-X vectors, got %d\n",
281 num_msix_want, num_msix_got);
282 }
283 rdev->num_msix = num_msix_got;
284 done:
285 rtnl_unlock();
286 return rc;
287 }
288
289 static void bnxt_re_init_hwrm_hdr(struct bnxt_re_dev *rdev, struct input *hdr,
290 u16 opcd, u16 crid, u16 trid)
291 {
292 hdr->req_type = cpu_to_le16(opcd);
293 hdr->cmpl_ring = cpu_to_le16(crid);
294 hdr->target_id = cpu_to_le16(trid);
295 }
296
297 static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
298 int msg_len, void *resp, int resp_max_len,
299 int timeout)
300 {
301 fw_msg->msg = msg;
302 fw_msg->msg_len = msg_len;
303 fw_msg->resp = resp;
304 fw_msg->resp_max_len = resp_max_len;
305 fw_msg->timeout = timeout;
306 }
307
308 static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id,
309 bool lock_wait)
310 {
311 struct bnxt_en_dev *en_dev = rdev->en_dev;
312 struct hwrm_ring_free_input req = {0};
313 struct hwrm_ring_free_output resp;
314 struct bnxt_fw_msg fw_msg;
315 bool do_unlock = false;
316 int rc = -EINVAL;
317
318 if (!en_dev)
319 return rc;
320
321 memset(&fw_msg, 0, sizeof(fw_msg));
322 if (lock_wait) {
323 rtnl_lock();
324 do_unlock = true;
325 }
326
327 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1);
328 req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
329 req.ring_id = cpu_to_le16(fw_ring_id);
330 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
331 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
332 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
333 if (rc)
334 dev_err(rdev_to_dev(rdev),
335 "Failed to free HW ring:%d :%#x", req.ring_id, rc);
336 if (do_unlock)
337 rtnl_unlock();
338 return rc;
339 }
340
341 static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr,
342 int pages, int type, u32 ring_mask,
343 u32 map_index, u16 *fw_ring_id)
344 {
345 struct bnxt_en_dev *en_dev = rdev->en_dev;
346 struct hwrm_ring_alloc_input req = {0};
347 struct hwrm_ring_alloc_output resp;
348 struct bnxt_fw_msg fw_msg;
349 int rc = -EINVAL;
350
351 if (!en_dev)
352 return rc;
353
354 memset(&fw_msg, 0, sizeof(fw_msg));
355 rtnl_lock();
356 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1);
357 req.enables = 0;
358 req.page_tbl_addr = cpu_to_le64(dma_arr[0]);
359 if (pages > 1) {
360 /* Page size is in log2 units */
361 req.page_size = BNXT_PAGE_SHIFT;
362 req.page_tbl_depth = 1;
363 }
364 req.fbo = 0;
365 /* Association of ring index with doorbell index and MSIX number */
366 req.logical_id = cpu_to_le16(map_index);
367 req.length = cpu_to_le32(ring_mask + 1);
368 req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
369 req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX;
370 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
371 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
372 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
373 if (!rc)
374 *fw_ring_id = le16_to_cpu(resp.ring_id);
375
376 rtnl_unlock();
377 return rc;
378 }
379
380 static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
381 u32 fw_stats_ctx_id, bool lock_wait)
382 {
383 struct bnxt_en_dev *en_dev = rdev->en_dev;
384 struct hwrm_stat_ctx_free_input req = {0};
385 struct bnxt_fw_msg fw_msg;
386 bool do_unlock = false;
387 int rc = -EINVAL;
388
389 if (!en_dev)
390 return rc;
391
392 memset(&fw_msg, 0, sizeof(fw_msg));
393 if (lock_wait) {
394 rtnl_lock();
395 do_unlock = true;
396 }
397
398 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1);
399 req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id);
400 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&req,
401 sizeof(req), DFLT_HWRM_CMD_TIMEOUT);
402 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
403 if (rc)
404 dev_err(rdev_to_dev(rdev),
405 "Failed to free HW stats context %#x", rc);
406
407 if (do_unlock)
408 rtnl_unlock();
409 return rc;
410 }
411
412 static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
413 dma_addr_t dma_map,
414 u32 *fw_stats_ctx_id)
415 {
416 struct hwrm_stat_ctx_alloc_output resp = {0};
417 struct hwrm_stat_ctx_alloc_input req = {0};
418 struct bnxt_en_dev *en_dev = rdev->en_dev;
419 struct bnxt_fw_msg fw_msg;
420 int rc = -EINVAL;
421
422 *fw_stats_ctx_id = INVALID_STATS_CTX_ID;
423
424 if (!en_dev)
425 return rc;
426
427 memset(&fw_msg, 0, sizeof(fw_msg));
428 rtnl_lock();
429
430 bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
431 req.update_period_ms = cpu_to_le32(1000);
432 req.stats_dma_addr = cpu_to_le64(dma_map);
433 req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE;
434 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
435 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
436 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
437 if (!rc)
438 *fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id);
439
440 rtnl_unlock();
441 return rc;
442 }
443
444 /* Device */
445
446 static bool is_bnxt_re_dev(struct net_device *netdev)
447 {
448 struct ethtool_drvinfo drvinfo;
449
450 if (netdev->ethtool_ops && netdev->ethtool_ops->get_drvinfo) {
451 memset(&drvinfo, 0, sizeof(drvinfo));
452 netdev->ethtool_ops->get_drvinfo(netdev, &drvinfo);
453
454 if (strcmp(drvinfo.driver, "bnxt_en"))
455 return false;
456 return true;
457 }
458 return false;
459 }
460
461 static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev)
462 {
463 struct bnxt_re_dev *rdev;
464
465 rcu_read_lock();
466 list_for_each_entry_rcu(rdev, &bnxt_re_dev_list, list) {
467 if (rdev->netdev == netdev) {
468 rcu_read_unlock();
469 return rdev;
470 }
471 }
472 rcu_read_unlock();
473 return NULL;
474 }
475
476 static void bnxt_re_dev_unprobe(struct net_device *netdev,
477 struct bnxt_en_dev *en_dev)
478 {
479 dev_put(netdev);
480 module_put(en_dev->pdev->driver->driver.owner);
481 }
482
483 static struct bnxt_en_dev *bnxt_re_dev_probe(struct net_device *netdev)
484 {
485 struct bnxt *bp = netdev_priv(netdev);
486 struct bnxt_en_dev *en_dev;
487 struct pci_dev *pdev;
488
489 /* Call bnxt_en's RoCE probe via indirect API */
490 if (!bp->ulp_probe)
491 return ERR_PTR(-EINVAL);
492
493 en_dev = bp->ulp_probe(netdev);
494 if (IS_ERR(en_dev))
495 return en_dev;
496
497 pdev = en_dev->pdev;
498 if (!pdev)
499 return ERR_PTR(-EINVAL);
500
501 if (!(en_dev->flags & BNXT_EN_FLAG_ROCE_CAP)) {
502 dev_info(&pdev->dev,
503 "%s: probe error: RoCE is not supported on this device",
504 ROCE_DRV_MODULE_NAME);
505 return ERR_PTR(-ENODEV);
506 }
507
508 /* Bump net device reference count */
509 if (!try_module_get(pdev->driver->driver.owner))
510 return ERR_PTR(-ENODEV);
511
512 dev_hold(netdev);
513
514 return en_dev;
515 }
516
517 static void bnxt_re_unregister_ib(struct bnxt_re_dev *rdev)
518 {
519 ib_unregister_device(&rdev->ibdev);
520 }
521
522 static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
523 {
524 struct ib_device *ibdev = &rdev->ibdev;
525
526 /* ib device init */
527 ibdev->owner = THIS_MODULE;
528 ibdev->node_type = RDMA_NODE_IB_CA;
529 strlcpy(ibdev->name, "bnxt_re%d", IB_DEVICE_NAME_MAX);
530 strlcpy(ibdev->node_desc, BNXT_RE_DESC " HCA",
531 strlen(BNXT_RE_DESC) + 5);
532 ibdev->phys_port_cnt = 1;
533
534 bnxt_qplib_get_guid(rdev->netdev->dev_addr, (u8 *)&ibdev->node_guid);
535
536 ibdev->num_comp_vectors = 1;
537 ibdev->dev.parent = &rdev->en_dev->pdev->dev;
538 ibdev->local_dma_lkey = BNXT_QPLIB_RSVD_LKEY;
539
540 /* User space */
541 ibdev->uverbs_abi_ver = BNXT_RE_ABI_VERSION;
542 ibdev->uverbs_cmd_mask =
543 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
544 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
545 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
546 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
547 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
548 (1ull << IB_USER_VERBS_CMD_REG_MR) |
549 (1ull << IB_USER_VERBS_CMD_REREG_MR) |
550 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
551 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
552 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
553 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
554 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
555 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
556 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
557 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
558 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
559 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
560 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
561 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
562 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
563 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
564 (1ull << IB_USER_VERBS_CMD_MODIFY_AH) |
565 (1ull << IB_USER_VERBS_CMD_QUERY_AH) |
566 (1ull << IB_USER_VERBS_CMD_DESTROY_AH);
567 /* POLL_CQ and REQ_NOTIFY_CQ is directly handled in libbnxt_re */
568
569 /* Kernel verbs */
570 ibdev->query_device = bnxt_re_query_device;
571 ibdev->modify_device = bnxt_re_modify_device;
572
573 ibdev->query_port = bnxt_re_query_port;
574 ibdev->get_port_immutable = bnxt_re_get_port_immutable;
575 ibdev->get_dev_fw_str = bnxt_re_query_fw_str;
576 ibdev->query_pkey = bnxt_re_query_pkey;
577 ibdev->query_gid = bnxt_re_query_gid;
578 ibdev->get_netdev = bnxt_re_get_netdev;
579 ibdev->add_gid = bnxt_re_add_gid;
580 ibdev->del_gid = bnxt_re_del_gid;
581 ibdev->get_link_layer = bnxt_re_get_link_layer;
582
583 ibdev->alloc_pd = bnxt_re_alloc_pd;
584 ibdev->dealloc_pd = bnxt_re_dealloc_pd;
585
586 ibdev->create_ah = bnxt_re_create_ah;
587 ibdev->modify_ah = bnxt_re_modify_ah;
588 ibdev->query_ah = bnxt_re_query_ah;
589 ibdev->destroy_ah = bnxt_re_destroy_ah;
590
591 ibdev->create_srq = bnxt_re_create_srq;
592 ibdev->modify_srq = bnxt_re_modify_srq;
593 ibdev->query_srq = bnxt_re_query_srq;
594 ibdev->destroy_srq = bnxt_re_destroy_srq;
595 ibdev->post_srq_recv = bnxt_re_post_srq_recv;
596
597 ibdev->create_qp = bnxt_re_create_qp;
598 ibdev->modify_qp = bnxt_re_modify_qp;
599 ibdev->query_qp = bnxt_re_query_qp;
600 ibdev->destroy_qp = bnxt_re_destroy_qp;
601
602 ibdev->post_send = bnxt_re_post_send;
603 ibdev->post_recv = bnxt_re_post_recv;
604
605 ibdev->create_cq = bnxt_re_create_cq;
606 ibdev->destroy_cq = bnxt_re_destroy_cq;
607 ibdev->poll_cq = bnxt_re_poll_cq;
608 ibdev->req_notify_cq = bnxt_re_req_notify_cq;
609
610 ibdev->get_dma_mr = bnxt_re_get_dma_mr;
611 ibdev->dereg_mr = bnxt_re_dereg_mr;
612 ibdev->alloc_mr = bnxt_re_alloc_mr;
613 ibdev->map_mr_sg = bnxt_re_map_mr_sg;
614
615 ibdev->reg_user_mr = bnxt_re_reg_user_mr;
616 ibdev->alloc_ucontext = bnxt_re_alloc_ucontext;
617 ibdev->dealloc_ucontext = bnxt_re_dealloc_ucontext;
618 ibdev->mmap = bnxt_re_mmap;
619 ibdev->get_hw_stats = bnxt_re_ib_get_hw_stats;
620 ibdev->alloc_hw_stats = bnxt_re_ib_alloc_hw_stats;
621
622 return ib_register_device(ibdev, NULL);
623 }
624
625 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
626 char *buf)
627 {
628 struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
629
630 return scnprintf(buf, PAGE_SIZE, "0x%x\n", rdev->en_dev->pdev->vendor);
631 }
632
633 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
634 char *buf)
635 {
636 struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev);
637
638 return scnprintf(buf, PAGE_SIZE, "%s\n", rdev->ibdev.node_desc);
639 }
640
641 static DEVICE_ATTR(hw_rev, 0444, show_rev, NULL);
642 static DEVICE_ATTR(hca_type, 0444, show_hca, NULL);
643
644 static struct device_attribute *bnxt_re_attributes[] = {
645 &dev_attr_hw_rev,
646 &dev_attr_hca_type
647 };
648
649 static void bnxt_re_dev_remove(struct bnxt_re_dev *rdev)
650 {
651 dev_put(rdev->netdev);
652 rdev->netdev = NULL;
653
654 mutex_lock(&bnxt_re_dev_lock);
655 list_del_rcu(&rdev->list);
656 mutex_unlock(&bnxt_re_dev_lock);
657
658 synchronize_rcu();
659 flush_workqueue(bnxt_re_wq);
660
661 ib_dealloc_device(&rdev->ibdev);
662 /* rdev is gone */
663 }
664
665 static struct bnxt_re_dev *bnxt_re_dev_add(struct net_device *netdev,
666 struct bnxt_en_dev *en_dev)
667 {
668 struct bnxt_re_dev *rdev;
669
670 /* Allocate bnxt_re_dev instance here */
671 rdev = (struct bnxt_re_dev *)ib_alloc_device(sizeof(*rdev));
672 if (!rdev) {
673 dev_err(NULL, "%s: bnxt_re_dev allocation failure!",
674 ROCE_DRV_MODULE_NAME);
675 return NULL;
676 }
677 /* Default values */
678 rdev->netdev = netdev;
679 dev_hold(rdev->netdev);
680 rdev->en_dev = en_dev;
681 rdev->id = rdev->en_dev->pdev->devfn;
682 INIT_LIST_HEAD(&rdev->qp_list);
683 mutex_init(&rdev->qp_lock);
684 atomic_set(&rdev->qp_count, 0);
685 atomic_set(&rdev->cq_count, 0);
686 atomic_set(&rdev->srq_count, 0);
687 atomic_set(&rdev->mr_count, 0);
688 atomic_set(&rdev->mw_count, 0);
689 rdev->cosq[0] = 0xFFFF;
690 rdev->cosq[1] = 0xFFFF;
691
692 mutex_lock(&bnxt_re_dev_lock);
693 list_add_tail_rcu(&rdev->list, &bnxt_re_dev_list);
694 mutex_unlock(&bnxt_re_dev_lock);
695 return rdev;
696 }
697
698 static int bnxt_re_handle_unaffi_async_event(struct creq_func_event
699 *unaffi_async)
700 {
701 switch (unaffi_async->event) {
702 case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR:
703 break;
704 case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR:
705 break;
706 case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR:
707 break;
708 case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR:
709 break;
710 case CREQ_FUNC_EVENT_EVENT_CQ_ERROR:
711 break;
712 case CREQ_FUNC_EVENT_EVENT_TQM_ERROR:
713 break;
714 case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR:
715 break;
716 case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR:
717 break;
718 case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR:
719 break;
720 case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR:
721 break;
722 case CREQ_FUNC_EVENT_EVENT_TIM_ERROR:
723 break;
724 default:
725 return -EINVAL;
726 }
727 return 0;
728 }
729
730 static int bnxt_re_handle_qp_async_event(struct creq_qp_event *qp_event,
731 struct bnxt_re_qp *qp)
732 {
733 struct ib_event event;
734
735 memset(&event, 0, sizeof(event));
736 if (qp->qplib_qp.srq) {
737 event.device = &qp->rdev->ibdev;
738 event.element.qp = &qp->ib_qp;
739 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
740 }
741
742 if (event.device && qp->ib_qp.event_handler)
743 qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
744
745 return 0;
746 }
747
748 static int bnxt_re_handle_affi_async_event(struct creq_qp_event *affi_async,
749 void *obj)
750 {
751 int rc = 0;
752 u8 event;
753
754 if (!obj)
755 return rc; /* QP was already dead, still return success */
756
757 event = affi_async->event;
758 if (event == CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION) {
759 struct bnxt_qplib_qp *lib_qp = obj;
760 struct bnxt_re_qp *qp = container_of(lib_qp, struct bnxt_re_qp,
761 qplib_qp);
762 rc = bnxt_re_handle_qp_async_event(affi_async, qp);
763 }
764 return rc;
765 }
766
767 static int bnxt_re_aeq_handler(struct bnxt_qplib_rcfw *rcfw,
768 void *aeqe, void *obj)
769 {
770 struct creq_qp_event *affi_async;
771 struct creq_func_event *unaffi_async;
772 u8 type;
773 int rc;
774
775 type = ((struct creq_base *)aeqe)->type;
776 if (type == CREQ_BASE_TYPE_FUNC_EVENT) {
777 unaffi_async = aeqe;
778 rc = bnxt_re_handle_unaffi_async_event(unaffi_async);
779 } else {
780 affi_async = aeqe;
781 rc = bnxt_re_handle_affi_async_event(affi_async, obj);
782 }
783
784 return rc;
785 }
786
787 static int bnxt_re_srqn_handler(struct bnxt_qplib_nq *nq,
788 struct bnxt_qplib_srq *handle, u8 event)
789 {
790 struct bnxt_re_srq *srq = container_of(handle, struct bnxt_re_srq,
791 qplib_srq);
792 struct ib_event ib_event;
793 int rc = 0;
794
795 if (!srq) {
796 dev_err(NULL, "%s: SRQ is NULL, SRQN not handled",
797 ROCE_DRV_MODULE_NAME);
798 rc = -EINVAL;
799 goto done;
800 }
801 ib_event.device = &srq->rdev->ibdev;
802 ib_event.element.srq = &srq->ib_srq;
803 if (event == NQ_SRQ_EVENT_EVENT_SRQ_THRESHOLD_EVENT)
804 ib_event.event = IB_EVENT_SRQ_LIMIT_REACHED;
805 else
806 ib_event.event = IB_EVENT_SRQ_ERR;
807
808 if (srq->ib_srq.event_handler) {
809 /* Lock event_handler? */
810 (*srq->ib_srq.event_handler)(&ib_event,
811 srq->ib_srq.srq_context);
812 }
813 done:
814 return rc;
815 }
816
817 static int bnxt_re_cqn_handler(struct bnxt_qplib_nq *nq,
818 struct bnxt_qplib_cq *handle)
819 {
820 struct bnxt_re_cq *cq = container_of(handle, struct bnxt_re_cq,
821 qplib_cq);
822
823 if (!cq) {
824 dev_err(NULL, "%s: CQ is NULL, CQN not handled",
825 ROCE_DRV_MODULE_NAME);
826 return -EINVAL;
827 }
828 if (cq->ib_cq.comp_handler) {
829 /* Lock comp_handler? */
830 (*cq->ib_cq.comp_handler)(&cq->ib_cq, cq->ib_cq.cq_context);
831 }
832
833 return 0;
834 }
835
836 static void bnxt_re_cleanup_res(struct bnxt_re_dev *rdev)
837 {
838 int i;
839
840 if (rdev->nq[0].hwq.max_elements) {
841 for (i = 1; i < rdev->num_msix; i++)
842 bnxt_qplib_disable_nq(&rdev->nq[i - 1]);
843 }
844
845 if (rdev->qplib_res.rcfw)
846 bnxt_qplib_cleanup_res(&rdev->qplib_res);
847 }
848
849 static int bnxt_re_init_res(struct bnxt_re_dev *rdev)
850 {
851 int rc = 0, i;
852
853 bnxt_qplib_init_res(&rdev->qplib_res);
854
855 for (i = 1; i < rdev->num_msix ; i++) {
856 rc = bnxt_qplib_enable_nq(rdev->en_dev->pdev, &rdev->nq[i - 1],
857 i - 1, rdev->msix_entries[i].vector,
858 rdev->msix_entries[i].db_offset,
859 &bnxt_re_cqn_handler,
860 &bnxt_re_srqn_handler);
861
862 if (rc) {
863 dev_err(rdev_to_dev(rdev),
864 "Failed to enable NQ with rc = 0x%x", rc);
865 goto fail;
866 }
867 }
868 return 0;
869 fail:
870 return rc;
871 }
872
873 static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev, bool lock_wait)
874 {
875 int i;
876
877 for (i = 0; i < rdev->num_msix - 1; i++) {
878 bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, lock_wait);
879 bnxt_qplib_free_nq(&rdev->nq[i]);
880 }
881 }
882
883 static void bnxt_re_free_res(struct bnxt_re_dev *rdev, bool lock_wait)
884 {
885 bnxt_re_free_nq_res(rdev, lock_wait);
886
887 if (rdev->qplib_res.dpi_tbl.max) {
888 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
889 &rdev->qplib_res.dpi_tbl,
890 &rdev->dpi_privileged);
891 }
892 if (rdev->qplib_res.rcfw) {
893 bnxt_qplib_free_res(&rdev->qplib_res);
894 rdev->qplib_res.rcfw = NULL;
895 }
896 }
897
898 static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
899 {
900 int rc = 0, i;
901
902 /* Configure and allocate resources for qplib */
903 rdev->qplib_res.rcfw = &rdev->rcfw;
904 rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
905 rdev->is_virtfn);
906 if (rc)
907 goto fail;
908
909 rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev,
910 rdev->netdev, &rdev->dev_attr);
911 if (rc)
912 goto fail;
913
914 rc = bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl,
915 &rdev->dpi_privileged,
916 rdev);
917 if (rc)
918 goto dealloc_res;
919
920 for (i = 0; i < rdev->num_msix - 1; i++) {
921 rdev->nq[i].hwq.max_elements = BNXT_RE_MAX_CQ_COUNT +
922 BNXT_RE_MAX_SRQC_COUNT + 2;
923 rc = bnxt_qplib_alloc_nq(rdev->en_dev->pdev, &rdev->nq[i]);
924 if (rc) {
925 dev_err(rdev_to_dev(rdev), "Alloc Failed NQ%d rc:%#x",
926 i, rc);
927 goto dealloc_dpi;
928 }
929 rc = bnxt_re_net_ring_alloc
930 (rdev, rdev->nq[i].hwq.pbl[PBL_LVL_0].pg_map_arr,
931 rdev->nq[i].hwq.pbl[rdev->nq[i].hwq.level].pg_count,
932 HWRM_RING_ALLOC_CMPL,
933 BNXT_QPLIB_NQE_MAX_CNT - 1,
934 rdev->msix_entries[i + 1].ring_idx,
935 &rdev->nq[i].ring_id);
936 if (rc) {
937 dev_err(rdev_to_dev(rdev),
938 "Failed to allocate NQ fw id with rc = 0x%x",
939 rc);
940 goto free_nq;
941 }
942 }
943 return 0;
944 free_nq:
945 for (i = 0; i < rdev->num_msix - 1; i++)
946 bnxt_qplib_free_nq(&rdev->nq[i]);
947 dealloc_dpi:
948 bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
949 &rdev->qplib_res.dpi_tbl,
950 &rdev->dpi_privileged);
951 dealloc_res:
952 bnxt_qplib_free_res(&rdev->qplib_res);
953
954 fail:
955 rdev->qplib_res.rcfw = NULL;
956 return rc;
957 }
958
959 static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
960 u8 port_num, enum ib_event_type event)
961 {
962 struct ib_event ib_event;
963
964 ib_event.device = ibdev;
965 if (qp)
966 ib_event.element.qp = qp;
967 else
968 ib_event.element.port_num = port_num;
969 ib_event.event = event;
970 ib_dispatch_event(&ib_event);
971 }
972
973 #define HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN 0x02
974 static int bnxt_re_query_hwrm_pri2cos(struct bnxt_re_dev *rdev, u8 dir,
975 u64 *cid_map)
976 {
977 struct hwrm_queue_pri2cos_qcfg_input req = {0};
978 struct bnxt *bp = netdev_priv(rdev->netdev);
979 struct hwrm_queue_pri2cos_qcfg_output resp;
980 struct bnxt_en_dev *en_dev = rdev->en_dev;
981 struct bnxt_fw_msg fw_msg;
982 u32 flags = 0;
983 u8 *qcfgmap, *tmp_map;
984 int rc = 0, i;
985
986 if (!cid_map)
987 return -EINVAL;
988
989 memset(&fw_msg, 0, sizeof(fw_msg));
990 bnxt_re_init_hwrm_hdr(rdev, (void *)&req,
991 HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
992 flags |= (dir & 0x01);
993 flags |= HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN;
994 req.flags = cpu_to_le32(flags);
995 req.port_id = bp->pf.port_id;
996
997 bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp,
998 sizeof(resp), DFLT_HWRM_CMD_TIMEOUT);
999 rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg);
1000 if (rc)
1001 return rc;
1002
1003 if (resp.queue_cfg_info) {
1004 dev_warn(rdev_to_dev(rdev),
1005 "Asymmetric cos queue configuration detected");
1006 dev_warn(rdev_to_dev(rdev),
1007 " on device, QoS may not be fully functional\n");
1008 }
1009 qcfgmap = &resp.pri0_cos_queue_id;
1010 tmp_map = (u8 *)cid_map;
1011 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1012 tmp_map[i] = qcfgmap[i];
1013
1014 return rc;
1015 }
1016
1017 static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev,
1018 struct bnxt_re_qp *qp)
1019 {
1020 return (qp->ib_qp.qp_type == IB_QPT_GSI) || (qp == rdev->qp1_sqp);
1021 }
1022
1023 static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev)
1024 {
1025 int mask = IB_QP_STATE;
1026 struct ib_qp_attr qp_attr;
1027 struct bnxt_re_qp *qp;
1028
1029 qp_attr.qp_state = IB_QPS_ERR;
1030 mutex_lock(&rdev->qp_lock);
1031 list_for_each_entry(qp, &rdev->qp_list, list) {
1032 /* Modify the state of all QPs except QP1/Shadow QP */
1033 if (!bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) {
1034 if (qp->qplib_qp.state !=
1035 CMDQ_MODIFY_QP_NEW_STATE_RESET &&
1036 qp->qplib_qp.state !=
1037 CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1038 bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp,
1039 1, IB_EVENT_QP_FATAL);
1040 bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask,
1041 NULL);
1042 }
1043 }
1044 }
1045 mutex_unlock(&rdev->qp_lock);
1046 }
1047
1048 static int bnxt_re_update_gid(struct bnxt_re_dev *rdev)
1049 {
1050 struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl;
1051 struct bnxt_qplib_gid gid;
1052 u16 gid_idx, index;
1053 int rc = 0;
1054
1055 if (!test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
1056 return 0;
1057
1058 if (!sgid_tbl) {
1059 dev_err(rdev_to_dev(rdev), "QPLIB: SGID table not allocated");
1060 return -EINVAL;
1061 }
1062
1063 for (index = 0; index < sgid_tbl->active; index++) {
1064 gid_idx = sgid_tbl->hw_id[index];
1065
1066 if (!memcmp(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero,
1067 sizeof(bnxt_qplib_gid_zero)))
1068 continue;
1069 /* need to modify the VLAN enable setting of non VLAN GID only
1070 * as setting is done for VLAN GID while adding GID
1071 */
1072 if (sgid_tbl->vlan[index])
1073 continue;
1074
1075 memcpy(&gid, &sgid_tbl->tbl[index], sizeof(gid));
1076
1077 rc = bnxt_qplib_update_sgid(sgid_tbl, &gid, gid_idx,
1078 rdev->qplib_res.netdev->dev_addr);
1079 }
1080
1081 return rc;
1082 }
1083
1084 static u32 bnxt_re_get_priority_mask(struct bnxt_re_dev *rdev)
1085 {
1086 u32 prio_map = 0, tmp_map = 0;
1087 struct net_device *netdev;
1088 struct dcb_app app;
1089
1090 netdev = rdev->netdev;
1091
1092 memset(&app, 0, sizeof(app));
1093 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
1094 app.protocol = ETH_P_IBOE;
1095 tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1096 prio_map = tmp_map;
1097
1098 app.selector = IEEE_8021QAZ_APP_SEL_DGRAM;
1099 app.protocol = ROCE_V2_UDP_DPORT;
1100 tmp_map = dcb_ieee_getapp_mask(netdev, &app);
1101 prio_map |= tmp_map;
1102
1103 return prio_map;
1104 }
1105
1106 static void bnxt_re_parse_cid_map(u8 prio_map, u8 *cid_map, u16 *cosq)
1107 {
1108 u16 prio;
1109 u8 id;
1110
1111 for (prio = 0, id = 0; prio < 8; prio++) {
1112 if (prio_map & (1 << prio)) {
1113 cosq[id] = cid_map[prio];
1114 id++;
1115 if (id == 2) /* Max 2 tcs supported */
1116 break;
1117 }
1118 }
1119 }
1120
1121 static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
1122 {
1123 u8 prio_map = 0;
1124 u64 cid_map;
1125 int rc;
1126
1127 /* Get priority for roce */
1128 prio_map = bnxt_re_get_priority_mask(rdev);
1129
1130 if (prio_map == rdev->cur_prio_map)
1131 return 0;
1132 rdev->cur_prio_map = prio_map;
1133 /* Get cosq id for this priority */
1134 rc = bnxt_re_query_hwrm_pri2cos(rdev, 0, &cid_map);
1135 if (rc) {
1136 dev_warn(rdev_to_dev(rdev), "no cos for p_mask %x\n", prio_map);
1137 return rc;
1138 }
1139 /* Parse CoS IDs for app priority */
1140 bnxt_re_parse_cid_map(prio_map, (u8 *)&cid_map, rdev->cosq);
1141
1142 /* Config BONO. */
1143 rc = bnxt_qplib_map_tc2cos(&rdev->qplib_res, rdev->cosq);
1144 if (rc) {
1145 dev_warn(rdev_to_dev(rdev), "no tc for cos{%x, %x}\n",
1146 rdev->cosq[0], rdev->cosq[1]);
1147 return rc;
1148 }
1149
1150 /* Actual priorities are not programmed as they are already
1151 * done by L2 driver; just enable or disable priority vlan tagging
1152 */
1153 if ((prio_map == 0 && rdev->qplib_res.prio) ||
1154 (prio_map != 0 && !rdev->qplib_res.prio)) {
1155 rdev->qplib_res.prio = prio_map ? true : false;
1156
1157 bnxt_re_update_gid(rdev);
1158 }
1159
1160 return 0;
1161 }
1162
1163 static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
1164 {
1165 int i, rc;
1166
1167 if (test_and_clear_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) {
1168 for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++)
1169 device_remove_file(&rdev->ibdev.dev,
1170 bnxt_re_attributes[i]);
1171 /* Cleanup ib dev */
1172 bnxt_re_unregister_ib(rdev);
1173 }
1174 if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
1175 cancel_delayed_work(&rdev->worker);
1176
1177 bnxt_re_cleanup_res(rdev);
1178 bnxt_re_free_res(rdev, lock_wait);
1179
1180 if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) {
1181 rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw);
1182 if (rc)
1183 dev_warn(rdev_to_dev(rdev),
1184 "Failed to deinitialize RCFW: %#x", rc);
1185 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id,
1186 lock_wait);
1187 bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1188 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1189 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, lock_wait);
1190 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1191 }
1192 if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags)) {
1193 rc = bnxt_re_free_msix(rdev, lock_wait);
1194 if (rc)
1195 dev_warn(rdev_to_dev(rdev),
1196 "Failed to free MSI-X vectors: %#x", rc);
1197 }
1198 if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags)) {
1199 rc = bnxt_re_unregister_netdev(rdev, lock_wait);
1200 if (rc)
1201 dev_warn(rdev_to_dev(rdev),
1202 "Failed to unregister with netdev: %#x", rc);
1203 }
1204 }
1205
1206 /* worker thread for polling periodic events. Now used for QoS programming*/
1207 static void bnxt_re_worker(struct work_struct *work)
1208 {
1209 struct bnxt_re_dev *rdev = container_of(work, struct bnxt_re_dev,
1210 worker.work);
1211
1212 bnxt_re_setup_qos(rdev);
1213 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1214 }
1215
1216 static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
1217 {
1218 int i, j, rc;
1219
1220 /* Registered a new RoCE device instance to netdev */
1221 rc = bnxt_re_register_netdev(rdev);
1222 if (rc) {
1223 pr_err("Failed to register with netedev: %#x\n", rc);
1224 return -EINVAL;
1225 }
1226 set_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags);
1227
1228 /* Check whether VF or PF */
1229 bnxt_re_get_sriov_func_type(rdev);
1230
1231 rc = bnxt_re_request_msix(rdev);
1232 if (rc) {
1233 pr_err("Failed to get MSI-X vectors: %#x\n", rc);
1234 rc = -EINVAL;
1235 goto fail;
1236 }
1237 set_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags);
1238
1239 /* Establish RCFW Communication Channel to initialize the context
1240 * memory for the function and all child VFs
1241 */
1242 rc = bnxt_qplib_alloc_rcfw_channel(rdev->en_dev->pdev, &rdev->rcfw,
1243 BNXT_RE_MAX_QPC_COUNT);
1244 if (rc) {
1245 pr_err("Failed to allocate RCFW Channel: %#x\n", rc);
1246 goto fail;
1247 }
1248 rc = bnxt_re_net_ring_alloc
1249 (rdev, rdev->rcfw.creq.pbl[PBL_LVL_0].pg_map_arr,
1250 rdev->rcfw.creq.pbl[rdev->rcfw.creq.level].pg_count,
1251 HWRM_RING_ALLOC_CMPL, BNXT_QPLIB_CREQE_MAX_CNT - 1,
1252 rdev->msix_entries[BNXT_RE_AEQ_IDX].ring_idx,
1253 &rdev->rcfw.creq_ring_id);
1254 if (rc) {
1255 pr_err("Failed to allocate CREQ: %#x\n", rc);
1256 goto free_rcfw;
1257 }
1258 rc = bnxt_qplib_enable_rcfw_channel
1259 (rdev->en_dev->pdev, &rdev->rcfw,
1260 rdev->msix_entries[BNXT_RE_AEQ_IDX].vector,
1261 rdev->msix_entries[BNXT_RE_AEQ_IDX].db_offset,
1262 rdev->is_virtfn, &bnxt_re_aeq_handler);
1263 if (rc) {
1264 pr_err("Failed to enable RCFW channel: %#x\n", rc);
1265 goto free_ring;
1266 }
1267
1268 rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr,
1269 rdev->is_virtfn);
1270 if (rc)
1271 goto disable_rcfw;
1272 if (!rdev->is_virtfn)
1273 bnxt_re_set_resource_limits(rdev);
1274
1275 rc = bnxt_qplib_alloc_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx, 0);
1276 if (rc) {
1277 pr_err("Failed to allocate QPLIB context: %#x\n", rc);
1278 goto disable_rcfw;
1279 }
1280 rc = bnxt_re_net_stats_ctx_alloc(rdev,
1281 rdev->qplib_ctx.stats.dma_map,
1282 &rdev->qplib_ctx.stats.fw_id);
1283 if (rc) {
1284 pr_err("Failed to allocate stats context: %#x\n", rc);
1285 goto free_ctx;
1286 }
1287
1288 rc = bnxt_qplib_init_rcfw(&rdev->rcfw, &rdev->qplib_ctx,
1289 rdev->is_virtfn);
1290 if (rc) {
1291 pr_err("Failed to initialize RCFW: %#x\n", rc);
1292 goto free_sctx;
1293 }
1294 set_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags);
1295
1296 /* Resources based on the 'new' device caps */
1297 rc = bnxt_re_alloc_res(rdev);
1298 if (rc) {
1299 pr_err("Failed to allocate resources: %#x\n", rc);
1300 goto fail;
1301 }
1302 rc = bnxt_re_init_res(rdev);
1303 if (rc) {
1304 pr_err("Failed to initialize resources: %#x\n", rc);
1305 goto fail;
1306 }
1307
1308 if (!rdev->is_virtfn) {
1309 rc = bnxt_re_setup_qos(rdev);
1310 if (rc)
1311 pr_info("RoCE priority not yet configured\n");
1312
1313 INIT_DELAYED_WORK(&rdev->worker, bnxt_re_worker);
1314 set_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags);
1315 schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
1316 }
1317
1318 /* Register ib dev */
1319 rc = bnxt_re_register_ib(rdev);
1320 if (rc) {
1321 pr_err("Failed to register with IB: %#x\n", rc);
1322 goto fail;
1323 }
1324 dev_info(rdev_to_dev(rdev), "Device registered successfully");
1325 for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++) {
1326 rc = device_create_file(&rdev->ibdev.dev,
1327 bnxt_re_attributes[i]);
1328 if (rc) {
1329 dev_err(rdev_to_dev(rdev),
1330 "Failed to create IB sysfs: %#x", rc);
1331 /* Must clean up all created device files */
1332 for (j = 0; j < i; j++)
1333 device_remove_file(&rdev->ibdev.dev,
1334 bnxt_re_attributes[j]);
1335 bnxt_re_unregister_ib(rdev);
1336 goto fail;
1337 }
1338 }
1339 set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
1340 ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1341 &rdev->active_width);
1342 set_bit(BNXT_RE_FLAG_ISSUE_ROCE_STATS, &rdev->flags);
1343 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE);
1344 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_GID_CHANGE);
1345
1346 return 0;
1347 free_sctx:
1348 bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id, true);
1349 free_ctx:
1350 bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
1351 disable_rcfw:
1352 bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
1353 free_ring:
1354 bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, true);
1355 free_rcfw:
1356 bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
1357 fail:
1358 bnxt_re_ib_unreg(rdev, true);
1359 return rc;
1360 }
1361
1362 static void bnxt_re_dev_unreg(struct bnxt_re_dev *rdev)
1363 {
1364 struct bnxt_en_dev *en_dev = rdev->en_dev;
1365 struct net_device *netdev = rdev->netdev;
1366
1367 bnxt_re_dev_remove(rdev);
1368
1369 if (netdev)
1370 bnxt_re_dev_unprobe(netdev, en_dev);
1371 }
1372
1373 static int bnxt_re_dev_reg(struct bnxt_re_dev **rdev, struct net_device *netdev)
1374 {
1375 struct bnxt_en_dev *en_dev;
1376 int rc = 0;
1377
1378 if (!is_bnxt_re_dev(netdev))
1379 return -ENODEV;
1380
1381 en_dev = bnxt_re_dev_probe(netdev);
1382 if (IS_ERR(en_dev)) {
1383 if (en_dev != ERR_PTR(-ENODEV))
1384 pr_err("%s: Failed to probe\n", ROCE_DRV_MODULE_NAME);
1385 rc = PTR_ERR(en_dev);
1386 goto exit;
1387 }
1388 *rdev = bnxt_re_dev_add(netdev, en_dev);
1389 if (!*rdev) {
1390 rc = -ENOMEM;
1391 bnxt_re_dev_unprobe(netdev, en_dev);
1392 goto exit;
1393 }
1394 exit:
1395 return rc;
1396 }
1397
1398 static void bnxt_re_remove_one(struct bnxt_re_dev *rdev)
1399 {
1400 pci_dev_put(rdev->en_dev->pdev);
1401 }
1402
1403 /* Handle all deferred netevents tasks */
1404 static void bnxt_re_task(struct work_struct *work)
1405 {
1406 struct bnxt_re_work *re_work;
1407 struct bnxt_re_dev *rdev;
1408 int rc = 0;
1409
1410 re_work = container_of(work, struct bnxt_re_work, work);
1411 rdev = re_work->rdev;
1412
1413 if (re_work->event != NETDEV_REGISTER &&
1414 !test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
1415 return;
1416
1417 switch (re_work->event) {
1418 case NETDEV_REGISTER:
1419 rc = bnxt_re_ib_reg(rdev);
1420 if (rc)
1421 dev_err(rdev_to_dev(rdev),
1422 "Failed to register with IB: %#x", rc);
1423 break;
1424 case NETDEV_UP:
1425 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1426 IB_EVENT_PORT_ACTIVE);
1427 break;
1428 case NETDEV_DOWN:
1429 bnxt_re_dev_stop(rdev);
1430 break;
1431 case NETDEV_CHANGE:
1432 if (!netif_carrier_ok(rdev->netdev))
1433 bnxt_re_dev_stop(rdev);
1434 else if (netif_carrier_ok(rdev->netdev))
1435 bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
1436 IB_EVENT_PORT_ACTIVE);
1437 ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
1438 &rdev->active_width);
1439 break;
1440 default:
1441 break;
1442 }
1443 smp_mb__before_atomic();
1444 clear_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags);
1445 kfree(re_work);
1446 }
1447
1448 static void bnxt_re_init_one(struct bnxt_re_dev *rdev)
1449 {
1450 pci_dev_get(rdev->en_dev->pdev);
1451 }
1452
1453 /*
1454 * "Notifier chain callback can be invoked for the same chain from
1455 * different CPUs at the same time".
1456 *
1457 * For cases when the netdev is already present, our call to the
1458 * register_netdevice_notifier() will actually get the rtnl_lock()
1459 * before sending NETDEV_REGISTER and (if up) NETDEV_UP
1460 * events.
1461 *
1462 * But for cases when the netdev is not already present, the notifier
1463 * chain is subjected to be invoked from different CPUs simultaneously.
1464 *
1465 * This is protected by the netdev_mutex.
1466 */
1467 static int bnxt_re_netdev_event(struct notifier_block *notifier,
1468 unsigned long event, void *ptr)
1469 {
1470 struct net_device *real_dev, *netdev = netdev_notifier_info_to_dev(ptr);
1471 struct bnxt_re_work *re_work;
1472 struct bnxt_re_dev *rdev;
1473 int rc = 0;
1474 bool sch_work = false;
1475
1476 real_dev = rdma_vlan_dev_real_dev(netdev);
1477 if (!real_dev)
1478 real_dev = netdev;
1479
1480 rdev = bnxt_re_from_netdev(real_dev);
1481 if (!rdev && event != NETDEV_REGISTER)
1482 goto exit;
1483 if (real_dev != netdev)
1484 goto exit;
1485
1486 switch (event) {
1487 case NETDEV_REGISTER:
1488 if (rdev)
1489 break;
1490 rc = bnxt_re_dev_reg(&rdev, real_dev);
1491 if (rc == -ENODEV)
1492 break;
1493 if (rc) {
1494 pr_err("Failed to register with the device %s: %#x\n",
1495 real_dev->name, rc);
1496 break;
1497 }
1498 bnxt_re_init_one(rdev);
1499 sch_work = true;
1500 break;
1501
1502 case NETDEV_UNREGISTER:
1503 /* netdev notifier will call NETDEV_UNREGISTER again later since
1504 * we are still holding the reference to the netdev
1505 */
1506 if (test_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags))
1507 goto exit;
1508 bnxt_re_ib_unreg(rdev, false);
1509 bnxt_re_remove_one(rdev);
1510 bnxt_re_dev_unreg(rdev);
1511 break;
1512
1513 default:
1514 sch_work = true;
1515 break;
1516 }
1517 if (sch_work) {
1518 /* Allocate for the deferred task */
1519 re_work = kzalloc(sizeof(*re_work), GFP_ATOMIC);
1520 if (re_work) {
1521 re_work->rdev = rdev;
1522 re_work->event = event;
1523 re_work->vlan_dev = (real_dev == netdev ?
1524 NULL : netdev);
1525 INIT_WORK(&re_work->work, bnxt_re_task);
1526 set_bit(BNXT_RE_FLAG_TASK_IN_PROG, &rdev->flags);
1527 queue_work(bnxt_re_wq, &re_work->work);
1528 }
1529 }
1530
1531 exit:
1532 return NOTIFY_DONE;
1533 }
1534
1535 static struct notifier_block bnxt_re_netdev_notifier = {
1536 .notifier_call = bnxt_re_netdev_event
1537 };
1538
1539 static int __init bnxt_re_mod_init(void)
1540 {
1541 int rc = 0;
1542
1543 pr_info("%s: %s", ROCE_DRV_MODULE_NAME, version);
1544
1545 bnxt_re_wq = create_singlethread_workqueue("bnxt_re");
1546 if (!bnxt_re_wq)
1547 return -ENOMEM;
1548
1549 INIT_LIST_HEAD(&bnxt_re_dev_list);
1550
1551 rc = register_netdevice_notifier(&bnxt_re_netdev_notifier);
1552 if (rc) {
1553 pr_err("%s: Cannot register to netdevice_notifier",
1554 ROCE_DRV_MODULE_NAME);
1555 goto err_netdev;
1556 }
1557 return 0;
1558
1559 err_netdev:
1560 destroy_workqueue(bnxt_re_wq);
1561
1562 return rc;
1563 }
1564
1565 static void __exit bnxt_re_mod_exit(void)
1566 {
1567 struct bnxt_re_dev *rdev, *next;
1568 LIST_HEAD(to_be_deleted);
1569
1570 mutex_lock(&bnxt_re_dev_lock);
1571 /* Free all adapter allocated resources */
1572 if (!list_empty(&bnxt_re_dev_list))
1573 list_splice_init(&bnxt_re_dev_list, &to_be_deleted);
1574 mutex_unlock(&bnxt_re_dev_lock);
1575 /*
1576 * Cleanup the devices in reverse order so that the VF device
1577 * cleanup is done before PF cleanup
1578 */
1579 list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) {
1580 dev_info(rdev_to_dev(rdev), "Unregistering Device");
1581 bnxt_re_dev_stop(rdev);
1582 bnxt_re_ib_unreg(rdev, true);
1583 bnxt_re_remove_one(rdev);
1584 bnxt_re_dev_unreg(rdev);
1585 }
1586 unregister_netdevice_notifier(&bnxt_re_netdev_notifier);
1587 if (bnxt_re_wq)
1588 destroy_workqueue(bnxt_re_wq);
1589 }
1590
1591 module_init(bnxt_re_mod_init);
1592 module_exit(bnxt_re_mod_exit);
CRIS linux kernel tree