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: Fast Path Operators
37 */
38
39 #define dev_fmt(fmt) "QPLIB: " fmt
40
41 #include <linux/interrupt.h>
42 #include <linux/spinlock.h>
43 #include <linux/sched.h>
44 #include <linux/slab.h>
45 #include <linux/pci.h>
46 #include <linux/delay.h>
47 #include <linux/prefetch.h>
48 #include <linux/if_ether.h>
49 #include <rdma/ib_mad.h>
50
51 #include "roce_hsi.h"
52
53 #include "qplib_res.h"
54 #include "qplib_rcfw.h"
55 #include "qplib_sp.h"
56 #include "qplib_fp.h"
57 #include <rdma/ib_addr.h>
58 #include "bnxt_ulp.h"
59 #include "bnxt_re.h"
60 #include "ib_verbs.h"
61
62 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
63
bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp * qp)64 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
65 {
66 qp->sq.condition = false;
67 qp->sq.send_phantom = false;
68 qp->sq.single = false;
69 }
70
71 /* Flush list */
__bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)72 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
73 {
74 struct bnxt_qplib_cq *scq, *rcq;
75
76 scq = qp->scq;
77 rcq = qp->rcq;
78
79 if (!qp->sq.flushed) {
80 dev_dbg(&scq->hwq.pdev->dev,
81 "FP: Adding to SQ Flush list = %p\n", qp);
82 bnxt_qplib_cancel_phantom_processing(qp);
83 list_add_tail(&qp->sq_flush, &scq->sqf_head);
84 qp->sq.flushed = true;
85 }
86 if (!qp->srq) {
87 if (!qp->rq.flushed) {
88 dev_dbg(&rcq->hwq.pdev->dev,
89 "FP: Adding to RQ Flush list = %p\n", qp);
90 list_add_tail(&qp->rq_flush, &rcq->rqf_head);
91 qp->rq.flushed = true;
92 }
93 }
94 }
95
bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)96 static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp,
97 unsigned long *flags)
98 __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock)
99 {
100 spin_lock_irqsave(&qp->scq->flush_lock, *flags);
101 if (qp->scq == qp->rcq)
102 __acquire(&qp->rcq->flush_lock);
103 else
104 spin_lock(&qp->rcq->flush_lock);
105 }
106
bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)107 static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp,
108 unsigned long *flags)
109 __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock)
110 {
111 if (qp->scq == qp->rcq)
112 __release(&qp->rcq->flush_lock);
113 else
114 spin_unlock(&qp->rcq->flush_lock);
115 spin_unlock_irqrestore(&qp->scq->flush_lock, *flags);
116 }
117
bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)118 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
119 {
120 unsigned long flags;
121
122 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
123 __bnxt_qplib_add_flush_qp(qp);
124 bnxt_qplib_release_cq_flush_locks(qp, &flags);
125 }
126
__bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp * qp)127 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
128 {
129 if (qp->sq.flushed) {
130 qp->sq.flushed = false;
131 list_del(&qp->sq_flush);
132 }
133 if (!qp->srq) {
134 if (qp->rq.flushed) {
135 qp->rq.flushed = false;
136 list_del(&qp->rq_flush);
137 }
138 }
139 }
140
bnxt_qplib_clean_qp(struct bnxt_qplib_qp * qp)141 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp)
142 {
143 unsigned long flags;
144
145 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
146 __clean_cq(qp->scq, (u64)(unsigned long)qp);
147 qp->sq.hwq.prod = 0;
148 qp->sq.hwq.cons = 0;
149 __clean_cq(qp->rcq, (u64)(unsigned long)qp);
150 qp->rq.hwq.prod = 0;
151 qp->rq.hwq.cons = 0;
152
153 __bnxt_qplib_del_flush_qp(qp);
154 bnxt_qplib_release_cq_flush_locks(qp, &flags);
155 }
156
bnxt_qpn_cqn_sched_task(struct work_struct * work)157 static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
158 {
159 struct bnxt_qplib_nq_work *nq_work =
160 container_of(work, struct bnxt_qplib_nq_work, work);
161
162 struct bnxt_qplib_cq *cq = nq_work->cq;
163 struct bnxt_qplib_nq *nq = nq_work->nq;
164
165 if (cq && nq) {
166 spin_lock_bh(&cq->compl_lock);
167 if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
168 dev_dbg(&nq->pdev->dev,
169 "%s:Trigger cq = %p event nq = %p\n",
170 __func__, cq, nq);
171 nq->cqn_handler(nq, cq);
172 }
173 spin_unlock_bh(&cq->compl_lock);
174 }
175 kfree(nq_work);
176 }
177
bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)178 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
179 struct bnxt_qplib_qp *qp)
180 {
181 struct bnxt_qplib_q *rq = &qp->rq;
182 struct bnxt_qplib_q *sq = &qp->sq;
183
184 if (qp->rq_hdr_buf)
185 dma_free_coherent(&res->pdev->dev,
186 rq->max_wqe * qp->rq_hdr_buf_size,
187 qp->rq_hdr_buf, qp->rq_hdr_buf_map);
188 if (qp->sq_hdr_buf)
189 dma_free_coherent(&res->pdev->dev,
190 sq->max_wqe * qp->sq_hdr_buf_size,
191 qp->sq_hdr_buf, qp->sq_hdr_buf_map);
192 qp->rq_hdr_buf = NULL;
193 qp->sq_hdr_buf = NULL;
194 qp->rq_hdr_buf_map = 0;
195 qp->sq_hdr_buf_map = 0;
196 qp->sq_hdr_buf_size = 0;
197 qp->rq_hdr_buf_size = 0;
198 }
199
bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)200 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
201 struct bnxt_qplib_qp *qp)
202 {
203 struct bnxt_qplib_q *rq = &qp->rq;
204 struct bnxt_qplib_q *sq = &qp->sq;
205 int rc = 0;
206
207 if (qp->sq_hdr_buf_size && sq->max_wqe) {
208 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
209 sq->max_wqe * qp->sq_hdr_buf_size,
210 &qp->sq_hdr_buf_map, GFP_KERNEL);
211 if (!qp->sq_hdr_buf) {
212 rc = -ENOMEM;
213 dev_err(&res->pdev->dev,
214 "Failed to create sq_hdr_buf\n");
215 goto fail;
216 }
217 }
218
219 if (qp->rq_hdr_buf_size && rq->max_wqe) {
220 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
221 rq->max_wqe *
222 qp->rq_hdr_buf_size,
223 &qp->rq_hdr_buf_map,
224 GFP_KERNEL);
225 if (!qp->rq_hdr_buf) {
226 rc = -ENOMEM;
227 dev_err(&res->pdev->dev,
228 "Failed to create rq_hdr_buf\n");
229 goto fail;
230 }
231 }
232 return 0;
233
234 fail:
235 bnxt_qplib_free_qp_hdr_buf(res, qp);
236 return rc;
237 }
238
clean_nq(struct bnxt_qplib_nq * nq,struct bnxt_qplib_cq * cq)239 static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq)
240 {
241 struct bnxt_qplib_hwq *hwq = &nq->hwq;
242 struct nq_base *nqe, **nq_ptr;
243 int budget = nq->budget;
244 uintptr_t q_handle;
245 u16 type;
246
247 spin_lock_bh(&hwq->lock);
248 /* Service the NQ until empty */
249 while (budget--) {
250 nq_ptr = (struct nq_base **)hwq->pbl_ptr;
251 nqe = &nq_ptr[NQE_PG(hwq->cons)][NQE_IDX(hwq->cons)];
252 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
253 break;
254
255 /*
256 * The valid test of the entry must be done first before
257 * reading any further.
258 */
259 dma_rmb();
260
261 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
262 switch (type) {
263 case NQ_BASE_TYPE_CQ_NOTIFICATION:
264 {
265 struct nq_cn *nqcne = (struct nq_cn *)nqe;
266
267 q_handle = le32_to_cpu(nqcne->cq_handle_low);
268 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
269 << 32;
270 if ((unsigned long)cq == q_handle) {
271 nqcne->cq_handle_low = 0;
272 nqcne->cq_handle_high = 0;
273 cq->cnq_events++;
274 }
275 break;
276 }
277 default:
278 break;
279 }
280 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
281 1, &nq->nq_db.dbinfo.flags);
282 }
283 spin_unlock_bh(&hwq->lock);
284 }
285
286 /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with
287 * this CQ.
288 */
__wait_for_all_nqes(struct bnxt_qplib_cq * cq,u16 cnq_events)289 static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events)
290 {
291 u32 retry_cnt = 100;
292
293 while (retry_cnt--) {
294 if (cnq_events == cq->cnq_events)
295 return;
296 usleep_range(50, 100);
297 clean_nq(cq->nq, cq);
298 }
299 }
300
bnxt_qplib_service_nq(struct tasklet_struct * t)301 static void bnxt_qplib_service_nq(struct tasklet_struct *t)
302 {
303 struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet);
304 struct bnxt_qplib_hwq *hwq = &nq->hwq;
305 struct bnxt_qplib_cq *cq;
306 int budget = nq->budget;
307 struct nq_base *nqe;
308 uintptr_t q_handle;
309 u32 hw_polled = 0;
310 u16 type;
311
312 spin_lock_bh(&hwq->lock);
313 /* Service the NQ until empty */
314 while (budget--) {
315 nqe = bnxt_qplib_get_qe(hwq, hwq->cons, NULL);
316 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
317 break;
318
319 /*
320 * The valid test of the entry must be done first before
321 * reading any further.
322 */
323 dma_rmb();
324
325 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
326 switch (type) {
327 case NQ_BASE_TYPE_CQ_NOTIFICATION:
328 {
329 struct nq_cn *nqcne = (struct nq_cn *)nqe;
330 struct bnxt_re_cq *cq_p;
331
332 q_handle = le32_to_cpu(nqcne->cq_handle_low);
333 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
334 << 32;
335 cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
336 if (!cq)
337 break;
338 cq->toggle = (le16_to_cpu(nqe->info10_type) &
339 NQ_CN_TOGGLE_MASK) >> NQ_CN_TOGGLE_SFT;
340 cq->dbinfo.toggle = cq->toggle;
341 cq_p = container_of(cq, struct bnxt_re_cq, qplib_cq);
342 if (cq_p->uctx_cq_page)
343 *((u32 *)cq_p->uctx_cq_page) = cq->toggle;
344
345 bnxt_qplib_armen_db(&cq->dbinfo,
346 DBC_DBC_TYPE_CQ_ARMENA);
347 spin_lock_bh(&cq->compl_lock);
348 atomic_set(&cq->arm_state, 0);
349 if (nq->cqn_handler(nq, (cq)))
350 dev_warn(&nq->pdev->dev,
351 "cqn - type 0x%x not handled\n", type);
352 cq->cnq_events++;
353 spin_unlock_bh(&cq->compl_lock);
354 break;
355 }
356 case NQ_BASE_TYPE_SRQ_EVENT:
357 {
358 struct bnxt_qplib_srq *srq;
359 struct bnxt_re_srq *srq_p;
360 struct nq_srq_event *nqsrqe =
361 (struct nq_srq_event *)nqe;
362
363 q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
364 q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
365 << 32;
366 srq = (struct bnxt_qplib_srq *)q_handle;
367 srq->toggle = (le16_to_cpu(nqe->info10_type) & NQ_CN_TOGGLE_MASK)
368 >> NQ_CN_TOGGLE_SFT;
369 srq->dbinfo.toggle = srq->toggle;
370 srq_p = container_of(srq, struct bnxt_re_srq, qplib_srq);
371 if (srq_p->uctx_srq_page)
372 *((u32 *)srq_p->uctx_srq_page) = srq->toggle;
373 bnxt_qplib_armen_db(&srq->dbinfo,
374 DBC_DBC_TYPE_SRQ_ARMENA);
375 if (nq->srqn_handler(nq,
376 (struct bnxt_qplib_srq *)q_handle,
377 nqsrqe->event))
378 dev_warn(&nq->pdev->dev,
379 "SRQ event 0x%x not handled\n",
380 nqsrqe->event);
381 break;
382 }
383 case NQ_BASE_TYPE_DBQ_EVENT:
384 break;
385 default:
386 dev_warn(&nq->pdev->dev,
387 "nqe with type = 0x%x not handled\n", type);
388 break;
389 }
390 hw_polled++;
391 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
392 1, &nq->nq_db.dbinfo.flags);
393 }
394 if (hw_polled)
395 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
396 spin_unlock_bh(&hwq->lock);
397 }
398
399 /* bnxt_re_synchronize_nq - self polling notification queue.
400 * @nq - notification queue pointer
401 *
402 * This function will start polling entries of a given notification queue
403 * for all pending entries.
404 * This function is useful to synchronize notification entries while resources
405 * are going away.
406 */
407
bnxt_re_synchronize_nq(struct bnxt_qplib_nq * nq)408 void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq)
409 {
410 int budget = nq->budget;
411
412 nq->budget = nq->hwq.max_elements;
413 bnxt_qplib_service_nq(&nq->nq_tasklet);
414 nq->budget = budget;
415 }
416
bnxt_qplib_nq_irq(int irq,void * dev_instance)417 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
418 {
419 struct bnxt_qplib_nq *nq = dev_instance;
420 struct bnxt_qplib_hwq *hwq = &nq->hwq;
421 u32 sw_cons;
422
423 /* Prefetch the NQ element */
424 sw_cons = HWQ_CMP(hwq->cons, hwq);
425 prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL));
426
427 /* Fan out to CPU affinitized kthreads? */
428 tasklet_schedule(&nq->nq_tasklet);
429
430 return IRQ_HANDLED;
431 }
432
bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq * nq,bool kill)433 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill)
434 {
435 if (!nq->requested)
436 return;
437
438 nq->requested = false;
439 /* Mask h/w interrupt */
440 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false);
441 /* Sync with last running IRQ handler */
442 synchronize_irq(nq->msix_vec);
443 irq_set_affinity_hint(nq->msix_vec, NULL);
444 free_irq(nq->msix_vec, nq);
445 kfree(nq->name);
446 nq->name = NULL;
447
448 if (kill)
449 tasklet_kill(&nq->nq_tasklet);
450 tasklet_disable(&nq->nq_tasklet);
451 }
452
bnxt_qplib_disable_nq(struct bnxt_qplib_nq * nq)453 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
454 {
455 if (nq->cqn_wq) {
456 destroy_workqueue(nq->cqn_wq);
457 nq->cqn_wq = NULL;
458 }
459
460 /* Make sure the HW is stopped! */
461 bnxt_qplib_nq_stop_irq(nq, true);
462
463 if (nq->nq_db.reg.bar_reg) {
464 iounmap(nq->nq_db.reg.bar_reg);
465 nq->nq_db.reg.bar_reg = NULL;
466 }
467
468 nq->cqn_handler = NULL;
469 nq->srqn_handler = NULL;
470 nq->msix_vec = 0;
471 }
472
bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq * nq,int nq_indx,int msix_vector,bool need_init)473 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
474 int msix_vector, bool need_init)
475 {
476 struct bnxt_qplib_res *res = nq->res;
477 int rc;
478
479 if (nq->requested)
480 return -EFAULT;
481
482 nq->msix_vec = msix_vector;
483 if (need_init)
484 tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq);
485 else
486 tasklet_enable(&nq->nq_tasklet);
487
488 nq->name = kasprintf(GFP_KERNEL, "bnxt_re-nq-%d@pci:%s",
489 nq_indx, pci_name(res->pdev));
490 if (!nq->name)
491 return -ENOMEM;
492 rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq);
493 if (rc) {
494 kfree(nq->name);
495 nq->name = NULL;
496 tasklet_disable(&nq->nq_tasklet);
497 return rc;
498 }
499
500 cpumask_clear(&nq->mask);
501 cpumask_set_cpu(nq_indx, &nq->mask);
502 rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask);
503 if (rc) {
504 dev_warn(&nq->pdev->dev,
505 "set affinity failed; vector: %d nq_idx: %d\n",
506 nq->msix_vec, nq_indx);
507 }
508 nq->requested = true;
509 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, res->cctx, true);
510
511 return rc;
512 }
513
bnxt_qplib_map_nq_db(struct bnxt_qplib_nq * nq,u32 reg_offt)514 static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq, u32 reg_offt)
515 {
516 resource_size_t reg_base;
517 struct bnxt_qplib_nq_db *nq_db;
518 struct pci_dev *pdev;
519
520 pdev = nq->pdev;
521 nq_db = &nq->nq_db;
522
523 nq_db->dbinfo.flags = 0;
524 nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION;
525 nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id);
526 if (!nq_db->reg.bar_base) {
527 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!",
528 nq_db->reg.bar_id);
529 return -ENOMEM;
530 }
531
532 reg_base = nq_db->reg.bar_base + reg_offt;
533 /* Unconditionally map 8 bytes to support 57500 series */
534 nq_db->reg.len = 8;
535 nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len);
536 if (!nq_db->reg.bar_reg) {
537 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed",
538 nq_db->reg.bar_id);
539 return -ENOMEM;
540 }
541
542 nq_db->dbinfo.db = nq_db->reg.bar_reg;
543 nq_db->dbinfo.hwq = &nq->hwq;
544 nq_db->dbinfo.xid = nq->ring_id;
545
546 return 0;
547 }
548
bnxt_qplib_enable_nq(struct pci_dev * pdev,struct bnxt_qplib_nq * nq,int nq_idx,int msix_vector,int bar_reg_offset,cqn_handler_t cqn_handler,srqn_handler_t srqn_handler)549 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
550 int nq_idx, int msix_vector, int bar_reg_offset,
551 cqn_handler_t cqn_handler,
552 srqn_handler_t srqn_handler)
553 {
554 int rc;
555
556 nq->pdev = pdev;
557 nq->cqn_handler = cqn_handler;
558 nq->srqn_handler = srqn_handler;
559 nq->load = 0;
560
561 /* Have a task to schedule CQ notifiers in post send case */
562 nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq");
563 if (!nq->cqn_wq)
564 return -ENOMEM;
565
566 rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset);
567 if (rc)
568 goto fail;
569
570 rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true);
571 if (rc) {
572 dev_err(&nq->pdev->dev,
573 "Failed to request irq for nq-idx %d\n", nq_idx);
574 goto fail;
575 }
576
577 return 0;
578 fail:
579 bnxt_qplib_disable_nq(nq);
580 return rc;
581 }
582
bnxt_qplib_free_nq(struct bnxt_qplib_nq * nq)583 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
584 {
585 if (nq->hwq.max_elements) {
586 bnxt_qplib_free_hwq(nq->res, &nq->hwq);
587 nq->hwq.max_elements = 0;
588 }
589 }
590
bnxt_qplib_alloc_nq(struct bnxt_qplib_res * res,struct bnxt_qplib_nq * nq)591 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq)
592 {
593 struct bnxt_qplib_hwq_attr hwq_attr = {};
594 struct bnxt_qplib_sg_info sginfo = {};
595
596 nq->pdev = res->pdev;
597 nq->res = res;
598 if (!nq->hwq.max_elements ||
599 nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
600 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
601
602 sginfo.pgsize = PAGE_SIZE;
603 sginfo.pgshft = PAGE_SHIFT;
604 hwq_attr.res = res;
605 hwq_attr.sginfo = &sginfo;
606 hwq_attr.depth = nq->hwq.max_elements;
607 hwq_attr.stride = sizeof(struct nq_base);
608 hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res);
609 if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) {
610 dev_err(&nq->pdev->dev, "FP NQ allocation failed");
611 return -ENOMEM;
612 }
613 nq->budget = 8;
614 return 0;
615 }
616
617 /* SRQ */
bnxt_qplib_destroy_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)618 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
619 struct bnxt_qplib_srq *srq)
620 {
621 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
622 struct creq_destroy_srq_resp resp = {};
623 struct bnxt_qplib_cmdqmsg msg = {};
624 struct cmdq_destroy_srq req = {};
625 int rc;
626
627 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
628 CMDQ_BASE_OPCODE_DESTROY_SRQ,
629 sizeof(req));
630
631 /* Configure the request */
632 req.srq_cid = cpu_to_le32(srq->id);
633
634 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
635 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
636 kfree(srq->swq);
637 if (rc)
638 return;
639 bnxt_qplib_free_hwq(res, &srq->hwq);
640 }
641
bnxt_qplib_create_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)642 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
643 struct bnxt_qplib_srq *srq)
644 {
645 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
646 struct bnxt_qplib_hwq_attr hwq_attr = {};
647 struct creq_create_srq_resp resp = {};
648 struct bnxt_qplib_cmdqmsg msg = {};
649 struct cmdq_create_srq req = {};
650 struct bnxt_qplib_pbl *pbl;
651 u16 pg_sz_lvl;
652 int rc, idx;
653
654 hwq_attr.res = res;
655 hwq_attr.sginfo = &srq->sg_info;
656 hwq_attr.depth = srq->max_wqe;
657 hwq_attr.stride = srq->wqe_size;
658 hwq_attr.type = HWQ_TYPE_QUEUE;
659 rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr);
660 if (rc)
661 return rc;
662 srq->dbinfo.flags = 0;
663 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
664 CMDQ_BASE_OPCODE_CREATE_SRQ,
665 sizeof(req));
666
667 /* Configure the request */
668 req.dpi = cpu_to_le32(srq->dpi->dpi);
669 req.srq_handle = cpu_to_le64((uintptr_t)srq);
670
671 req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
672 pbl = &srq->hwq.pbl[PBL_LVL_0];
673 pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
674 CMDQ_CREATE_SRQ_PG_SIZE_SFT);
675 pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
676 CMDQ_CREATE_SRQ_LVL_SFT;
677 req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
678 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
679 req.pd_id = cpu_to_le32(srq->pd->id);
680 req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
681
682 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
683 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
684 if (rc)
685 goto fail;
686
687 spin_lock_init(&srq->lock);
688 srq->start_idx = 0;
689 srq->last_idx = srq->hwq.max_elements - 1;
690 if (!srq->hwq.is_user) {
691 srq->swq = kzalloc_objs(*srq->swq, srq->hwq.max_elements);
692 if (!srq->swq) {
693 rc = -ENOMEM;
694 goto fail;
695 }
696 for (idx = 0; idx < srq->hwq.max_elements; idx++)
697 srq->swq[idx].next_idx = idx + 1;
698 srq->swq[srq->last_idx].next_idx = -1;
699 }
700
701 srq->id = le32_to_cpu(resp.xid);
702 srq->dbinfo.hwq = &srq->hwq;
703 srq->dbinfo.xid = srq->id;
704 srq->dbinfo.db = srq->dpi->dbr;
705 srq->dbinfo.max_slot = 1;
706 srq->dbinfo.priv_db = res->dpi_tbl.priv_db;
707 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
708
709 return 0;
710 fail:
711 bnxt_qplib_free_hwq(res, &srq->hwq);
712 kfree(srq->swq);
713
714 return rc;
715 }
716
bnxt_qplib_query_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)717 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
718 struct bnxt_qplib_srq *srq)
719 {
720 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
721 struct creq_query_srq_resp resp = {};
722 struct bnxt_qplib_cmdqmsg msg = {};
723 struct bnxt_qplib_rcfw_sbuf sbuf;
724 struct creq_query_srq_resp_sb *sb;
725 struct cmdq_query_srq req = {};
726 int rc;
727
728 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
729 CMDQ_BASE_OPCODE_QUERY_SRQ,
730 sizeof(req));
731
732 /* Configure the request */
733 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
734 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
735 &sbuf.dma_addr, GFP_KERNEL);
736 if (!sbuf.sb)
737 return -ENOMEM;
738 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
739 req.srq_cid = cpu_to_le32(srq->id);
740 sb = sbuf.sb;
741 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
742 sizeof(resp), 0);
743 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
744 if (!rc)
745 srq->threshold = le16_to_cpu(sb->srq_limit);
746 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
747 sbuf.sb, sbuf.dma_addr);
748
749 return rc;
750 }
751
bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq * srq,struct bnxt_qplib_swqe * wqe)752 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
753 struct bnxt_qplib_swqe *wqe)
754 {
755 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
756 struct rq_wqe *srqe;
757 struct sq_sge *hw_sge;
758 int i, next;
759
760 spin_lock(&srq_hwq->lock);
761 if (srq->start_idx == srq->last_idx) {
762 dev_err(&srq_hwq->pdev->dev,
763 "FP: SRQ (0x%x) is full!\n", srq->id);
764 spin_unlock(&srq_hwq->lock);
765 return -EINVAL;
766 }
767 next = srq->start_idx;
768 srq->start_idx = srq->swq[next].next_idx;
769 spin_unlock(&srq_hwq->lock);
770
771 srqe = bnxt_qplib_get_qe(srq_hwq, srq_hwq->prod, NULL);
772 memset(srqe, 0, srq->wqe_size);
773 /* Calculate wqe_size16 and data_len */
774 for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
775 i < wqe->num_sge; i++, hw_sge++) {
776 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
777 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
778 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
779 }
780 srqe->wqe_type = wqe->type;
781 srqe->flags = wqe->flags;
782 srqe->wqe_size = wqe->num_sge +
783 ((offsetof(typeof(*srqe), data) + 15) >> 4);
784 srqe->wr_id[0] = cpu_to_le32((u32)next);
785 srq->swq[next].wr_id = wqe->wr_id;
786
787 bnxt_qplib_hwq_incr_prod(&srq->dbinfo, srq_hwq, srq->dbinfo.max_slot);
788
789 /* Ring DB */
790 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
791
792 return 0;
793 }
794
795 /* QP */
796
bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q * que)797 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
798 {
799 int indx;
800
801 que->swq = kzalloc_objs(*que->swq, que->max_sw_wqe);
802 if (!que->swq)
803 return -ENOMEM;
804
805 que->swq_start = 0;
806 que->swq_last = que->max_sw_wqe - 1;
807 for (indx = 0; indx < que->max_sw_wqe; indx++)
808 que->swq[indx].next_idx = indx + 1;
809 que->swq[que->swq_last].next_idx = 0; /* Make it circular */
810 que->swq_last = 0;
811
812 return 0;
813 }
814
bnxt_qplib_create_qp1(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)815 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
816 {
817 struct bnxt_qplib_hwq_attr hwq_attr = {};
818 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
819 struct creq_create_qp1_resp resp = {};
820 struct bnxt_qplib_cmdqmsg msg = {};
821 struct bnxt_qplib_q *sq = &qp->sq;
822 struct bnxt_qplib_q *rq = &qp->rq;
823 struct cmdq_create_qp1 req = {};
824 struct bnxt_qplib_pbl *pbl;
825 u32 qp_flags = 0;
826 u8 pg_sz_lvl;
827 u32 tbl_indx;
828 int rc;
829
830 sq->dbinfo.flags = 0;
831 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
832 CMDQ_BASE_OPCODE_CREATE_QP1,
833 sizeof(req));
834 /* General */
835 req.type = qp->type;
836 req.dpi = cpu_to_le32(qp->dpi->dpi);
837 req.qp_handle = cpu_to_le64(qp->qp_handle);
838
839 /* SQ */
840 hwq_attr.res = res;
841 hwq_attr.sginfo = &sq->sg_info;
842 hwq_attr.stride = sizeof(struct sq_sge);
843 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, false);
844 hwq_attr.type = HWQ_TYPE_QUEUE;
845 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
846 if (rc)
847 return rc;
848
849 rc = bnxt_qplib_alloc_init_swq(sq);
850 if (rc)
851 goto fail_sq;
852
853 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
854 pbl = &sq->hwq.pbl[PBL_LVL_0];
855 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
856 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
857 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
858 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
859 req.sq_pg_size_sq_lvl = pg_sz_lvl;
860 req.sq_fwo_sq_sge =
861 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
862 CMDQ_CREATE_QP1_SQ_SGE_SFT);
863 req.scq_cid = cpu_to_le32(qp->scq->id);
864
865 /* RQ */
866 if (rq->max_wqe) {
867 rq->dbinfo.flags = 0;
868 hwq_attr.res = res;
869 hwq_attr.sginfo = &rq->sg_info;
870 hwq_attr.stride = sizeof(struct sq_sge);
871 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
872 hwq_attr.type = HWQ_TYPE_QUEUE;
873 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
874 if (rc)
875 goto sq_swq;
876 rc = bnxt_qplib_alloc_init_swq(rq);
877 if (rc)
878 goto fail_rq;
879 req.rq_size = cpu_to_le32(rq->max_wqe);
880 pbl = &rq->hwq.pbl[PBL_LVL_0];
881 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
882 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
883 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
884 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
885 req.rq_pg_size_rq_lvl = pg_sz_lvl;
886 req.rq_fwo_rq_sge =
887 cpu_to_le16((rq->max_sge &
888 CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
889 CMDQ_CREATE_QP1_RQ_SGE_SFT);
890 }
891 req.rcq_cid = cpu_to_le32(qp->rcq->id);
892 /* Header buffer - allow hdr_buf pass in */
893 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
894 if (rc) {
895 rc = -ENOMEM;
896 goto rq_rwq;
897 }
898 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
899 req.qp_flags = cpu_to_le32(qp_flags);
900 req.pd_id = cpu_to_le32(qp->pd->id);
901
902 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
903 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
904 if (rc)
905 goto fail;
906
907 qp->id = le32_to_cpu(resp.xid);
908 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
909 qp->cctx = res->cctx;
910 sq->dbinfo.hwq = &sq->hwq;
911 sq->dbinfo.xid = qp->id;
912 sq->dbinfo.db = qp->dpi->dbr;
913 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
914 if (rq->max_wqe) {
915 rq->dbinfo.hwq = &rq->hwq;
916 rq->dbinfo.xid = qp->id;
917 rq->dbinfo.db = qp->dpi->dbr;
918 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
919 }
920 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
921 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
922 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
923
924 return 0;
925
926 fail:
927 bnxt_qplib_free_qp_hdr_buf(res, qp);
928 rq_rwq:
929 kfree(rq->swq);
930 fail_rq:
931 bnxt_qplib_free_hwq(res, &rq->hwq);
932 sq_swq:
933 kfree(sq->swq);
934 fail_sq:
935 bnxt_qplib_free_hwq(res, &sq->hwq);
936 return rc;
937 }
938
bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp * qp,int size)939 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
940 {
941 struct bnxt_qplib_hwq *hwq;
942 struct bnxt_qplib_q *sq;
943 u64 fpsne, psn_pg;
944 u16 indx_pad = 0;
945
946 sq = &qp->sq;
947 hwq = &sq->hwq;
948 /* First psn entry */
949 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
950 if (!IS_ALIGNED(fpsne, PAGE_SIZE))
951 indx_pad = (fpsne & ~PAGE_MASK) / size;
952 hwq->pad_pgofft = indx_pad;
953 hwq->pad_pg = (u64 *)psn_pg;
954 hwq->pad_stride = size;
955 }
956
bnxt_qplib_create_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)957 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
958 {
959 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
960 struct bnxt_qplib_hwq_attr hwq_attr = {};
961 struct bnxt_qplib_sg_info sginfo = {};
962 struct creq_create_qp_resp resp = {};
963 struct bnxt_qplib_cmdqmsg msg = {};
964 struct bnxt_qplib_q *sq = &qp->sq;
965 struct bnxt_qplib_q *rq = &qp->rq;
966 struct cmdq_create_qp req = {};
967 int rc, req_size, psn_sz = 0;
968 struct bnxt_qplib_hwq *xrrq;
969 struct bnxt_qplib_pbl *pbl;
970 u32 qp_flags = 0;
971 u8 pg_sz_lvl;
972 u32 tbl_indx;
973 u16 nsge;
974
975 qp->is_host_msn_tbl = _is_host_msn_table(res->dattr->dev_cap_flags2);
976 sq->dbinfo.flags = 0;
977 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
978 CMDQ_BASE_OPCODE_CREATE_QP,
979 sizeof(req));
980
981 /* General */
982 req.type = qp->type;
983 req.dpi = cpu_to_le32(qp->dpi->dpi);
984 req.qp_handle = cpu_to_le64(qp->qp_handle);
985
986 /* SQ */
987 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
988 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(res->cctx) ?
989 sizeof(struct sq_psn_search_ext) :
990 sizeof(struct sq_psn_search);
991
992 if (qp->is_host_msn_tbl) {
993 psn_sz = sizeof(struct sq_msn_search);
994 qp->msn = 0;
995 }
996 }
997
998 hwq_attr.res = res;
999 hwq_attr.sginfo = &sq->sg_info;
1000 hwq_attr.stride = sizeof(struct sq_sge);
1001 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, true);
1002 hwq_attr.aux_stride = psn_sz;
1003 hwq_attr.aux_depth = psn_sz ? bnxt_qplib_set_sq_size(sq, qp->wqe_mode)
1004 : 0;
1005 /* Update msn tbl size */
1006 if (qp->is_host_msn_tbl && psn_sz) {
1007 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
1008 hwq_attr.aux_depth =
1009 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1010 else
1011 hwq_attr.aux_depth =
1012 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)) / 2;
1013 qp->msn_tbl_sz = hwq_attr.aux_depth;
1014 qp->msn = 0;
1015 }
1016
1017 hwq_attr.type = HWQ_TYPE_QUEUE;
1018 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
1019 if (rc)
1020 return rc;
1021
1022 if (!sq->hwq.is_user) {
1023 rc = bnxt_qplib_alloc_init_swq(sq);
1024 if (rc)
1025 goto fail_sq;
1026
1027 if (psn_sz)
1028 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1029 }
1030 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1031 pbl = &sq->hwq.pbl[PBL_LVL_0];
1032 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1033 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1034 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1035 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1036 req.sq_pg_size_sq_lvl = pg_sz_lvl;
1037 req.sq_fwo_sq_sge =
1038 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1039 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1040 req.scq_cid = cpu_to_le32(qp->scq->id);
1041
1042 /* RQ */
1043 if (!qp->srq) {
1044 rq->dbinfo.flags = 0;
1045 hwq_attr.res = res;
1046 hwq_attr.sginfo = &rq->sg_info;
1047 hwq_attr.stride = sizeof(struct sq_sge);
1048 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
1049 hwq_attr.aux_stride = 0;
1050 hwq_attr.aux_depth = 0;
1051 hwq_attr.type = HWQ_TYPE_QUEUE;
1052 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1053 if (rc)
1054 goto sq_swq;
1055 if (!rq->hwq.is_user) {
1056 rc = bnxt_qplib_alloc_init_swq(rq);
1057 if (rc)
1058 goto fail_rq;
1059 }
1060
1061 req.rq_size = cpu_to_le32(rq->max_wqe);
1062 pbl = &rq->hwq.pbl[PBL_LVL_0];
1063 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1064 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1065 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1066 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1067 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1068 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1069 6 : rq->max_sge;
1070 req.rq_fwo_rq_sge =
1071 cpu_to_le16(((nsge &
1072 CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1073 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1074 } else {
1075 /* SRQ */
1076 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1077 req.srq_cid = cpu_to_le32(qp->srq->id);
1078 }
1079 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1080
1081 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1082 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1083 if (qp->sig_type)
1084 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1085 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1086 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1087 if (bnxt_ext_stats_supported(res->cctx, res->dattr->dev_cap_flags, res->is_vf))
1088 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1089
1090 req.qp_flags = cpu_to_le32(qp_flags);
1091
1092 /* ORRQ and IRRQ */
1093 if (psn_sz) {
1094 xrrq = &qp->orrq;
1095 xrrq->max_elements =
1096 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1097 req_size = xrrq->max_elements *
1098 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1099 req_size &= ~(PAGE_SIZE - 1);
1100 sginfo.pgsize = req_size;
1101 sginfo.pgshft = PAGE_SHIFT;
1102
1103 hwq_attr.res = res;
1104 hwq_attr.sginfo = &sginfo;
1105 hwq_attr.depth = xrrq->max_elements;
1106 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1107 hwq_attr.aux_stride = 0;
1108 hwq_attr.aux_depth = 0;
1109 hwq_attr.type = HWQ_TYPE_CTX;
1110 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1111 if (rc)
1112 goto rq_swq;
1113 pbl = &xrrq->pbl[PBL_LVL_0];
1114 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1115
1116 xrrq = &qp->irrq;
1117 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1118 qp->max_dest_rd_atomic);
1119 req_size = xrrq->max_elements *
1120 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1121 req_size &= ~(PAGE_SIZE - 1);
1122 sginfo.pgsize = req_size;
1123 hwq_attr.depth = xrrq->max_elements;
1124 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1125 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1126 if (rc)
1127 goto fail_orrq;
1128
1129 pbl = &xrrq->pbl[PBL_LVL_0];
1130 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1131 }
1132 req.pd_id = cpu_to_le32(qp->pd->id);
1133
1134 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1135 sizeof(resp), 0);
1136 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1137 if (rc)
1138 goto fail;
1139
1140 qp->id = le32_to_cpu(resp.xid);
1141 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1142 INIT_LIST_HEAD(&qp->sq_flush);
1143 INIT_LIST_HEAD(&qp->rq_flush);
1144 qp->cctx = res->cctx;
1145 sq->dbinfo.hwq = &sq->hwq;
1146 sq->dbinfo.xid = qp->id;
1147 sq->dbinfo.db = qp->dpi->dbr;
1148 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1149 if (rq->max_wqe) {
1150 rq->dbinfo.hwq = &rq->hwq;
1151 rq->dbinfo.xid = qp->id;
1152 rq->dbinfo.db = qp->dpi->dbr;
1153 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1154 }
1155 spin_lock_bh(&rcfw->tbl_lock);
1156 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1157 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1158 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
1159 spin_unlock_bh(&rcfw->tbl_lock);
1160
1161 return 0;
1162 fail:
1163 bnxt_qplib_free_hwq(res, &qp->irrq);
1164 fail_orrq:
1165 bnxt_qplib_free_hwq(res, &qp->orrq);
1166 rq_swq:
1167 kfree(rq->swq);
1168 fail_rq:
1169 bnxt_qplib_free_hwq(res, &rq->hwq);
1170 sq_swq:
1171 kfree(sq->swq);
1172 fail_sq:
1173 bnxt_qplib_free_hwq(res, &sq->hwq);
1174 return rc;
1175 }
1176
__modify_flags_from_init_state(struct bnxt_qplib_qp * qp)1177 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1178 {
1179 switch (qp->state) {
1180 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1181 /* INIT->RTR, configure the path_mtu to the default
1182 * 2048 if not being requested
1183 */
1184 if (!(qp->modify_flags &
1185 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1186 qp->modify_flags |=
1187 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1188 qp->path_mtu =
1189 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1190 }
1191 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1192 if (qp->max_dest_rd_atomic < 1)
1193 qp->max_dest_rd_atomic = 1;
1194 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1195 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1196 if (!(qp->modify_flags &
1197 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1198 qp->modify_flags |=
1199 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1200 qp->ah.sgid_index = 0;
1201 }
1202 break;
1203 default:
1204 break;
1205 }
1206 }
1207
__modify_flags_from_rtr_state(struct bnxt_qplib_qp * qp)1208 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1209 {
1210 switch (qp->state) {
1211 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1212 /* Bono FW requires the max_rd_atomic to be >= 1 */
1213 if (qp->max_rd_atomic < 1)
1214 qp->max_rd_atomic = 1;
1215 /* Bono FW does not allow PKEY_INDEX,
1216 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1217 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1218 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1219 * modification
1220 */
1221 qp->modify_flags &=
1222 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1223 CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1224 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1225 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1226 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1227 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1228 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1229 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1230 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1231 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1232 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1233 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1234 break;
1235 default:
1236 break;
1237 }
1238 }
1239
__filter_modify_flags(struct bnxt_qplib_qp * qp)1240 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1241 {
1242 switch (qp->cur_qp_state) {
1243 case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1244 break;
1245 case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1246 __modify_flags_from_init_state(qp);
1247 break;
1248 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1249 __modify_flags_from_rtr_state(qp);
1250 break;
1251 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1252 break;
1253 case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1254 break;
1255 case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1256 break;
1257 case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1258 break;
1259 default:
1260 break;
1261 }
1262 }
1263
bnxt_set_mandatory_attributes(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp,struct cmdq_modify_qp * req)1264 static void bnxt_set_mandatory_attributes(struct bnxt_qplib_res *res,
1265 struct bnxt_qplib_qp *qp,
1266 struct cmdq_modify_qp *req)
1267 {
1268 u32 mandatory_flags = 0;
1269
1270 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
1271 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS;
1272
1273 if (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1274 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) {
1275 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC && qp->srq)
1276 req->flags = cpu_to_le16(CMDQ_MODIFY_QP_FLAGS_SRQ_USED);
1277 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY;
1278 }
1279
1280 if (_is_min_rnr_in_rtr_rts_mandatory(res->dattr->dev_cap_flags2) &&
1281 (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
1282 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS)) {
1283 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
1284 mandatory_flags |=
1285 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER;
1286 }
1287
1288 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_UD ||
1289 qp->type == CMDQ_MODIFY_QP_QP_TYPE_GSI)
1290 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY;
1291
1292 qp->modify_flags |= mandatory_flags;
1293 req->qp_type = qp->type;
1294 }
1295
is_optimized_state_transition(struct bnxt_qplib_qp * qp)1296 static bool is_optimized_state_transition(struct bnxt_qplib_qp *qp)
1297 {
1298 if ((qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1299 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) ||
1300 (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
1301 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS))
1302 return true;
1303
1304 return false;
1305 }
1306
bnxt_qplib_modify_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1307 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1308 {
1309 struct bnxt_qplib_sgid_tbl *sgid_tbl = &res->sgid_tbl;
1310 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1311 struct creq_modify_qp_resp resp = {};
1312 struct bnxt_qplib_cmdqmsg msg = {};
1313 struct cmdq_modify_qp req = {};
1314 u16 vlan_pcp_vlan_dei_vlan_id;
1315 u32 bmask, bmask_ext;
1316 u32 temp32[4];
1317 int rc;
1318
1319 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1320 CMDQ_BASE_OPCODE_MODIFY_QP,
1321 sizeof(req));
1322
1323 /* Filter out the qp_attr_mask based on the state->new transition */
1324 __filter_modify_flags(qp);
1325 if (qp->modify_flags & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1326 /* Set mandatory attributes for INIT -> RTR and RTR -> RTS transition */
1327 if (_is_optimize_modify_qp_supported(res->dattr->dev_cap_flags2) &&
1328 is_optimized_state_transition(qp))
1329 bnxt_set_mandatory_attributes(res, qp, &req);
1330 }
1331
1332 bmask = qp->modify_flags;
1333 req.modify_mask = cpu_to_le32(qp->modify_flags);
1334 bmask_ext = qp->ext_modify_flags;
1335 req.ext_modify_mask = cpu_to_le32(qp->ext_modify_flags);
1336 req.qp_cid = cpu_to_le32(qp->id);
1337
1338 if (bmask_ext & CMDQ_MODIFY_QP_EXT_MODIFY_MASK_RATE_LIMIT_VALID)
1339 req.rate_limit = cpu_to_le32(qp->rate_limit);
1340
1341 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1342 req.network_type_en_sqd_async_notify_new_state =
1343 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1344 (qp->en_sqd_async_notify ?
1345 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1346 }
1347 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1348
1349 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1350 req.access = qp->access;
1351
1352 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1353 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1354
1355 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1356 req.qkey = cpu_to_le32(qp->qkey);
1357
1358 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1359 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1360 req.dgid[0] = cpu_to_le32(temp32[0]);
1361 req.dgid[1] = cpu_to_le32(temp32[1]);
1362 req.dgid[2] = cpu_to_le32(temp32[2]);
1363 req.dgid[3] = cpu_to_le32(temp32[3]);
1364 }
1365 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1366 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1367
1368 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX) {
1369 if (qp->type == CMDQ_CREATE_QP_TYPE_RAW_ETHERTYPE)
1370 req.sgid_index =
1371 cpu_to_le16(sgid_tbl->hw_id[qp->ugid_index]);
1372 else
1373 req.sgid_index =
1374 cpu_to_le16(sgid_tbl->hw_id[qp->ah.sgid_index]);
1375 }
1376
1377 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1378 req.hop_limit = qp->ah.hop_limit;
1379
1380 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1381 req.traffic_class = qp->ah.traffic_class;
1382
1383 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1384 memcpy(req.dest_mac, qp->ah.dmac, 6);
1385
1386 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1387 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1388
1389 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1390 req.timeout = qp->timeout;
1391
1392 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1393 req.retry_cnt = qp->retry_cnt;
1394
1395 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1396 req.rnr_retry = qp->rnr_retry;
1397
1398 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1399 req.min_rnr_timer = qp->min_rnr_timer;
1400
1401 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1402 req.rq_psn = cpu_to_le32(qp->rq.psn);
1403
1404 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1405 req.sq_psn = cpu_to_le32(qp->sq.psn);
1406
1407 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1408 req.max_rd_atomic =
1409 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1410
1411 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1412 req.max_dest_rd_atomic =
1413 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1414
1415 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1416 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1417 req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1418 req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1419 req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1420 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1421 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1422
1423 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID) {
1424 vlan_pcp_vlan_dei_vlan_id =
1425 ((res->sgid_tbl.tbl[qp->ah.sgid_index].vlan_id <<
1426 CMDQ_MODIFY_QP_VLAN_ID_SFT) &
1427 CMDQ_MODIFY_QP_VLAN_ID_MASK);
1428 vlan_pcp_vlan_dei_vlan_id |=
1429 ((qp->ah.sl << CMDQ_MODIFY_QP_VLAN_PCP_SFT) &
1430 CMDQ_MODIFY_QP_VLAN_PCP_MASK);
1431 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(vlan_pcp_vlan_dei_vlan_id);
1432 }
1433
1434 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
1435 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1436 if (rc)
1437 return rc;
1438
1439 if (bmask_ext & CMDQ_MODIFY_QP_EXT_MODIFY_MASK_RATE_LIMIT_VALID)
1440 qp->shaper_allocation_status = resp.shaper_allocation_status;
1441 qp->cur_qp_state = qp->state;
1442 return 0;
1443 }
1444
bnxt_qplib_query_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1445 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1446 {
1447 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1448 struct creq_query_qp_resp resp = {};
1449 struct bnxt_qplib_cmdqmsg msg = {};
1450 struct bnxt_qplib_rcfw_sbuf sbuf;
1451 struct creq_query_qp_resp_sb *sb;
1452 struct cmdq_query_qp req = {};
1453 u32 temp32[4];
1454 int i, rc;
1455
1456 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
1457 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
1458 &sbuf.dma_addr, GFP_KERNEL);
1459 if (!sbuf.sb)
1460 return -ENOMEM;
1461 sb = sbuf.sb;
1462
1463 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1464 CMDQ_BASE_OPCODE_QUERY_QP,
1465 sizeof(req));
1466
1467 req.qp_cid = cpu_to_le32(qp->id);
1468 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
1469 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
1470 sizeof(resp), 0);
1471 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1472 if (rc)
1473 goto bail;
1474 /* Extract the context from the side buffer */
1475 qp->state = sb->en_sqd_async_notify_state &
1476 CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1477 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1478 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY;
1479 qp->access = sb->access;
1480 qp->pkey_index = le16_to_cpu(sb->pkey);
1481 qp->qkey = le32_to_cpu(sb->qkey);
1482 qp->udp_sport = le16_to_cpu(sb->udp_src_port);
1483
1484 temp32[0] = le32_to_cpu(sb->dgid[0]);
1485 temp32[1] = le32_to_cpu(sb->dgid[1]);
1486 temp32[2] = le32_to_cpu(sb->dgid[2]);
1487 temp32[3] = le32_to_cpu(sb->dgid[3]);
1488 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1489
1490 qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1491
1492 qp->ah.sgid_index = 0;
1493 for (i = 0; i < res->sgid_tbl.max; i++) {
1494 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1495 qp->ah.sgid_index = i;
1496 break;
1497 }
1498 }
1499 if (i == res->sgid_tbl.max)
1500 dev_warn(&res->pdev->dev, "SGID not found??\n");
1501
1502 qp->ah.hop_limit = sb->hop_limit;
1503 qp->ah.traffic_class = sb->traffic_class;
1504 memcpy(qp->ah.dmac, sb->dest_mac, 6);
1505 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1506 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1507 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1508 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1509 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1510 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1511 qp->timeout = sb->timeout;
1512 qp->retry_cnt = sb->retry_cnt;
1513 qp->rnr_retry = sb->rnr_retry;
1514 qp->min_rnr_timer = sb->min_rnr_timer;
1515 qp->rq.psn = le32_to_cpu(sb->rq_psn);
1516 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1517 qp->sq.psn = le32_to_cpu(sb->sq_psn);
1518 qp->max_dest_rd_atomic =
1519 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1520 qp->sq.max_wqe = qp->sq.hwq.max_elements;
1521 qp->rq.max_wqe = qp->rq.hwq.max_elements;
1522 qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1523 qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1524 qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1525 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1526 memcpy(qp->smac, sb->src_mac, 6);
1527 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1528 qp->port_id = le16_to_cpu(sb->port_id);
1529 bail:
1530 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
1531 sbuf.sb, sbuf.dma_addr);
1532 return rc;
1533 }
1534
__clean_cq(struct bnxt_qplib_cq * cq,u64 qp)1535 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1536 {
1537 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1538 u32 peek_flags, peek_cons;
1539 struct cq_base *hw_cqe;
1540 int i;
1541
1542 peek_flags = cq->dbinfo.flags;
1543 peek_cons = cq_hwq->cons;
1544 for (i = 0; i < cq_hwq->max_elements; i++) {
1545 hw_cqe = bnxt_qplib_get_qe(cq_hwq, peek_cons, NULL);
1546 if (!CQE_CMP_VALID(hw_cqe, peek_flags))
1547 continue;
1548 /*
1549 * The valid test of the entry must be done first before
1550 * reading any further.
1551 */
1552 dma_rmb();
1553 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1554 case CQ_BASE_CQE_TYPE_REQ:
1555 case CQ_BASE_CQE_TYPE_TERMINAL:
1556 {
1557 struct cq_req *cqe = (struct cq_req *)hw_cqe;
1558
1559 if (qp == le64_to_cpu(cqe->qp_handle))
1560 cqe->qp_handle = 0;
1561 break;
1562 }
1563 case CQ_BASE_CQE_TYPE_RES_RC:
1564 case CQ_BASE_CQE_TYPE_RES_UD:
1565 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1566 {
1567 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1568
1569 if (qp == le64_to_cpu(cqe->qp_handle))
1570 cqe->qp_handle = 0;
1571 break;
1572 }
1573 default:
1574 break;
1575 }
1576 bnxt_qplib_hwq_incr_cons(cq_hwq->max_elements, &peek_cons,
1577 1, &peek_flags);
1578 }
1579 }
1580
bnxt_qplib_destroy_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1581 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1582 struct bnxt_qplib_qp *qp)
1583 {
1584 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1585 struct creq_destroy_qp_resp resp = {};
1586 struct bnxt_qplib_cmdqmsg msg = {};
1587 struct cmdq_destroy_qp req = {};
1588 u32 tbl_indx;
1589 int rc;
1590
1591 spin_lock_bh(&rcfw->tbl_lock);
1592 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1593 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1594 rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1595 spin_unlock_bh(&rcfw->tbl_lock);
1596
1597 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1598 CMDQ_BASE_OPCODE_DESTROY_QP,
1599 sizeof(req));
1600
1601 req.qp_cid = cpu_to_le32(qp->id);
1602 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1603 sizeof(resp), 0);
1604 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1605 if (rc) {
1606 spin_lock_bh(&rcfw->tbl_lock);
1607 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1608 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1609 spin_unlock_bh(&rcfw->tbl_lock);
1610 return rc;
1611 }
1612
1613 return 0;
1614 }
1615
bnxt_qplib_free_qp_res(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1616 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1617 struct bnxt_qplib_qp *qp)
1618 {
1619 bnxt_qplib_free_qp_hdr_buf(res, qp);
1620 bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1621 kfree(qp->sq.swq);
1622
1623 bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1624 kfree(qp->rq.swq);
1625
1626 if (qp->irrq.max_elements)
1627 bnxt_qplib_free_hwq(res, &qp->irrq);
1628 if (qp->orrq.max_elements)
1629 bnxt_qplib_free_hwq(res, &qp->orrq);
1630
1631 }
1632
bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1633 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1634 struct bnxt_qplib_sge *sge)
1635 {
1636 struct bnxt_qplib_q *sq = &qp->sq;
1637 u32 sw_prod;
1638
1639 memset(sge, 0, sizeof(*sge));
1640
1641 if (qp->sq_hdr_buf) {
1642 sw_prod = sq->swq_start;
1643 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1644 sw_prod * qp->sq_hdr_buf_size);
1645 sge->lkey = 0xFFFFFFFF;
1646 sge->size = qp->sq_hdr_buf_size;
1647 return qp->sq_hdr_buf + sw_prod * sge->size;
1648 }
1649 return NULL;
1650 }
1651
bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp * qp)1652 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1653 {
1654 struct bnxt_qplib_q *rq = &qp->rq;
1655
1656 return rq->swq_start;
1657 }
1658
bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp * qp,u32 index)1659 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1660 {
1661 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1662 }
1663
bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1664 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1665 struct bnxt_qplib_sge *sge)
1666 {
1667 struct bnxt_qplib_q *rq = &qp->rq;
1668 u32 sw_prod;
1669
1670 memset(sge, 0, sizeof(*sge));
1671
1672 if (qp->rq_hdr_buf) {
1673 sw_prod = rq->swq_start;
1674 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1675 sw_prod * qp->rq_hdr_buf_size);
1676 sge->lkey = 0xFFFFFFFF;
1677 sge->size = qp->rq_hdr_buf_size;
1678 return qp->rq_hdr_buf + sw_prod * sge->size;
1679 }
1680 return NULL;
1681 }
1682
1683 /* Fil the MSN table into the next psn row */
bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1684 static void bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp *qp,
1685 struct bnxt_qplib_swqe *wqe,
1686 struct bnxt_qplib_swq *swq)
1687 {
1688 struct sq_msn_search *msns;
1689 u32 start_psn, next_psn;
1690 u16 start_idx;
1691
1692 msns = (struct sq_msn_search *)swq->psn_search;
1693 msns->start_idx_next_psn_start_psn = 0;
1694
1695 start_psn = swq->start_psn;
1696 next_psn = swq->next_psn;
1697 start_idx = swq->slot_idx;
1698 msns->start_idx_next_psn_start_psn |=
1699 bnxt_re_update_msn_tbl(start_idx, next_psn, start_psn);
1700 qp->msn++;
1701 qp->msn %= qp->msn_tbl_sz;
1702 }
1703
bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1704 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1705 struct bnxt_qplib_swqe *wqe,
1706 struct bnxt_qplib_swq *swq)
1707 {
1708 struct sq_psn_search_ext *psns_ext;
1709 struct sq_psn_search *psns;
1710 u32 flg_npsn;
1711 u32 op_spsn;
1712
1713 if (!swq->psn_search)
1714 return;
1715 /* Handle MSN differently on cap flags */
1716 if (qp->is_host_msn_tbl) {
1717 bnxt_qplib_fill_msn_search(qp, wqe, swq);
1718 return;
1719 }
1720 psns = (struct sq_psn_search *)swq->psn_search;
1721 psns = swq->psn_search;
1722 psns_ext = swq->psn_ext;
1723
1724 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1725 SQ_PSN_SEARCH_START_PSN_MASK);
1726 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1727 SQ_PSN_SEARCH_OPCODE_MASK);
1728 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1729 SQ_PSN_SEARCH_NEXT_PSN_MASK);
1730
1731 if (bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
1732 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1733 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1734 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1735 } else {
1736 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1737 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1738 }
1739 }
1740
bnxt_qplib_put_inline(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u32 * idx)1741 static unsigned int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1742 struct bnxt_qplib_swqe *wqe,
1743 u32 *idx)
1744 {
1745 struct bnxt_qplib_hwq *hwq;
1746 int len, t_len, offt;
1747 bool pull_dst = true;
1748 void *il_dst = NULL;
1749 void *il_src = NULL;
1750 int t_cplen, cplen;
1751 int indx;
1752
1753 hwq = &qp->sq.hwq;
1754 t_len = 0;
1755 for (indx = 0; indx < wqe->num_sge; indx++) {
1756 len = wqe->sg_list[indx].size;
1757 il_src = (void *)wqe->sg_list[indx].addr;
1758 t_len += len;
1759 if (t_len > qp->max_inline_data)
1760 return BNXT_RE_INVAL_MSG_SIZE;
1761 while (len) {
1762 if (pull_dst) {
1763 pull_dst = false;
1764 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1765 (*idx)++;
1766 t_cplen = 0;
1767 offt = 0;
1768 }
1769 cplen = min_t(int, len, sizeof(struct sq_sge));
1770 cplen = min_t(int, cplen,
1771 (sizeof(struct sq_sge) - offt));
1772 memcpy(il_dst, il_src, cplen);
1773 t_cplen += cplen;
1774 il_src += cplen;
1775 il_dst += cplen;
1776 offt += cplen;
1777 len -= cplen;
1778 if (t_cplen == sizeof(struct sq_sge))
1779 pull_dst = true;
1780 }
1781 }
1782
1783 return t_len;
1784 }
1785
bnxt_qplib_put_sges(struct bnxt_qplib_hwq * hwq,struct bnxt_qplib_sge * ssge,u32 nsge,u32 * idx)1786 static unsigned int bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1787 struct bnxt_qplib_sge *ssge,
1788 u32 nsge, u32 *idx)
1789 {
1790 struct sq_sge *dsge;
1791 int indx, len = 0;
1792
1793 for (indx = 0; indx < nsge; indx++, (*idx)++) {
1794 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1795 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1796 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1797 dsge->size = cpu_to_le32(ssge[indx].size);
1798 len += ssge[indx].size;
1799 }
1800
1801 return len;
1802 }
1803
bnxt_qplib_required_slots(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * wqe_sz,u16 * qdf,u8 mode)1804 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1805 struct bnxt_qplib_swqe *wqe,
1806 u16 *wqe_sz, u16 *qdf, u8 mode)
1807 {
1808 u32 ilsize, bytes;
1809 u16 nsge;
1810 u16 slot;
1811
1812 nsge = wqe->num_sge;
1813 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1814 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1815 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1816 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1817 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1818 bytes += sizeof(struct sq_send_hdr);
1819 }
1820
1821 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes);
1822 slot = bytes >> 4;
1823 *wqe_sz = slot;
1824 if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1825 slot = 8;
1826 return slot;
1827 }
1828
bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp * qp,struct bnxt_qplib_q * sq,struct bnxt_qplib_swq * swq,bool hw_retx)1829 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp *qp, struct bnxt_qplib_q *sq,
1830 struct bnxt_qplib_swq *swq, bool hw_retx)
1831 {
1832 struct bnxt_qplib_hwq *hwq;
1833 u32 pg_num, pg_indx;
1834 void *buff;
1835 u32 tail;
1836
1837 hwq = &sq->hwq;
1838 if (!hwq->pad_pg)
1839 return;
1840 tail = swq->slot_idx / sq->dbinfo.max_slot;
1841 if (hw_retx) {
1842 /* For HW retx use qp msn index */
1843 tail = qp->msn;
1844 tail %= qp->msn_tbl_sz;
1845 }
1846 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1847 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1848 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1849 swq->psn_ext = buff;
1850 swq->psn_search = buff;
1851 }
1852
bnxt_qplib_post_send_db(struct bnxt_qplib_qp * qp)1853 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1854 {
1855 struct bnxt_qplib_q *sq = &qp->sq;
1856
1857 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1858 }
1859
bnxt_qplib_post_send(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)1860 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1861 struct bnxt_qplib_swqe *wqe)
1862 {
1863 struct bnxt_qplib_nq_work *nq_work = NULL;
1864 int i, rc = 0, data_len = 0, pkt_num = 0;
1865 struct bnxt_qplib_q *sq = &qp->sq;
1866 struct bnxt_qplib_hwq *hwq;
1867 struct bnxt_qplib_swq *swq;
1868 bool sch_handler = false;
1869 u32 wqe_idx, slots, idx;
1870 u16 wqe_sz, qdf = 0;
1871 bool msn_update;
1872 void *base_hdr;
1873 void *ext_hdr;
1874 __le32 temp32;
1875
1876 hwq = &sq->hwq;
1877 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1878 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1879 dev_err(&hwq->pdev->dev,
1880 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1881 qp->id, qp->state);
1882 rc = -EINVAL;
1883 goto done;
1884 }
1885
1886 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1887 if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1888 dev_err(&hwq->pdev->dev,
1889 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1890 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1891 rc = -ENOMEM;
1892 goto done;
1893 }
1894
1895 swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1896 bnxt_qplib_pull_psn_buff(qp, sq, swq, qp->is_host_msn_tbl);
1897
1898 idx = 0;
1899 swq->slot_idx = hwq->prod;
1900 swq->slots = slots;
1901 swq->wr_id = wqe->wr_id;
1902 swq->type = wqe->type;
1903 swq->flags = wqe->flags;
1904 swq->start_psn = sq->psn & BTH_PSN_MASK;
1905 if (qp->sig_type)
1906 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1907
1908 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1909 sch_handler = true;
1910 dev_dbg(&hwq->pdev->dev,
1911 "%s Error QP. Scheduling for poll_cq\n", __func__);
1912 goto queue_err;
1913 }
1914
1915 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1916 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1917 memset(base_hdr, 0, sizeof(struct sq_sge));
1918 memset(ext_hdr, 0, sizeof(struct sq_sge));
1919
1920 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1921 /* Copy the inline data */
1922 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1923 else
1924 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1925 &idx);
1926 if (data_len > BNXT_RE_MAX_MSG_SIZE) {
1927 rc = -EINVAL;
1928 goto done;
1929 }
1930 /* Make sure we update MSN table only for wired wqes */
1931 msn_update = true;
1932 /* Specifics */
1933 switch (wqe->type) {
1934 case BNXT_QPLIB_SWQE_TYPE_SEND:
1935 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1936 struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1937 struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1938 /* Assemble info for Raw Ethertype QPs */
1939
1940 sqe->wqe_type = wqe->type;
1941 sqe->flags = wqe->flags;
1942 sqe->wqe_size = wqe_sz;
1943 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1944 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1945 sqe->length = cpu_to_le32(data_len);
1946 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1947 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1948 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1949
1950 break;
1951 }
1952 fallthrough;
1953 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1954 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1955 {
1956 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1957 struct sq_send_hdr *sqe = base_hdr;
1958
1959 sqe->wqe_type = wqe->type;
1960 sqe->flags = wqe->flags;
1961 sqe->wqe_size = wqe_sz;
1962 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1963 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1964 qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1965 sqe->q_key = cpu_to_le32(wqe->send.q_key);
1966 sqe->length = cpu_to_le32(data_len);
1967 sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1968 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1969 SQ_SEND_DST_QP_MASK);
1970 ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1971 SQ_SEND_AVID_MASK);
1972 msn_update = false;
1973 } else {
1974 sqe->length = cpu_to_le32(data_len);
1975 if (qp->mtu)
1976 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1977 if (!pkt_num)
1978 pkt_num = 1;
1979 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1980 }
1981 break;
1982 }
1983 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1984 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1985 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1986 {
1987 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1988 struct sq_rdma_hdr *sqe = base_hdr;
1989
1990 sqe->wqe_type = wqe->type;
1991 sqe->flags = wqe->flags;
1992 sqe->wqe_size = wqe_sz;
1993 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1994 sqe->length = cpu_to_le32((u32)data_len);
1995 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1996 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1997 if (qp->mtu)
1998 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1999 if (!pkt_num)
2000 pkt_num = 1;
2001 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
2002 break;
2003 }
2004 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
2005 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
2006 {
2007 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
2008 struct sq_atomic_hdr *sqe = base_hdr;
2009
2010 sqe->wqe_type = wqe->type;
2011 sqe->flags = wqe->flags;
2012 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
2013 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
2014 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
2015 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
2016 if (qp->mtu)
2017 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
2018 if (!pkt_num)
2019 pkt_num = 1;
2020 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
2021 break;
2022 }
2023 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
2024 {
2025 struct sq_localinvalidate *sqe = base_hdr;
2026
2027 sqe->wqe_type = wqe->type;
2028 sqe->flags = wqe->flags;
2029 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
2030 msn_update = false;
2031 break;
2032 }
2033 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
2034 {
2035 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
2036 struct sq_fr_pmr_hdr *sqe = base_hdr;
2037
2038 sqe->wqe_type = wqe->type;
2039 sqe->flags = wqe->flags;
2040 sqe->access_cntl = wqe->frmr.access_cntl |
2041 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
2042 sqe->zero_based_page_size_log =
2043 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
2044 SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
2045 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
2046 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
2047 temp32 = cpu_to_le32(wqe->frmr.length);
2048 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
2049 sqe->numlevels_pbl_page_size_log =
2050 ((wqe->frmr.pbl_pg_sz_log <<
2051 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
2052 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
2053 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
2054 SQ_FR_PMR_NUMLEVELS_MASK);
2055
2056 for (i = 0; i < wqe->frmr.page_list_len; i++)
2057 wqe->frmr.pbl_ptr[i] = cpu_to_le64(
2058 wqe->frmr.page_list[i] |
2059 PTU_PTE_VALID);
2060 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
2061 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
2062 msn_update = false;
2063
2064 break;
2065 }
2066 case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
2067 {
2068 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
2069 struct sq_bind_hdr *sqe = base_hdr;
2070
2071 sqe->wqe_type = wqe->type;
2072 sqe->flags = wqe->flags;
2073 sqe->access_cntl = wqe->bind.access_cntl;
2074 sqe->mw_type_zero_based = wqe->bind.mw_type |
2075 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
2076 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
2077 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
2078 ext_sqe->va = cpu_to_le64(wqe->bind.va);
2079 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
2080 msn_update = false;
2081 break;
2082 }
2083 default:
2084 /* Bad wqe, return error */
2085 rc = -EINVAL;
2086 goto done;
2087 }
2088 if (!qp->is_host_msn_tbl || msn_update) {
2089 swq->next_psn = sq->psn & BTH_PSN_MASK;
2090 bnxt_qplib_fill_psn_search(qp, wqe, swq);
2091 }
2092 queue_err:
2093 bnxt_qplib_swq_mod_start(sq, wqe_idx);
2094 bnxt_qplib_hwq_incr_prod(&sq->dbinfo, hwq, swq->slots);
2095 qp->wqe_cnt++;
2096 done:
2097 if (sch_handler) {
2098 nq_work = kzalloc_obj(*nq_work, GFP_ATOMIC);
2099 if (nq_work) {
2100 nq_work->cq = qp->scq;
2101 nq_work->nq = qp->scq->nq;
2102 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2103 queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
2104 } else {
2105 dev_err(&hwq->pdev->dev,
2106 "FP: Failed to allocate SQ nq_work!\n");
2107 rc = -ENOMEM;
2108 }
2109 }
2110 return rc;
2111 }
2112
bnxt_qplib_post_recv_db(struct bnxt_qplib_qp * qp)2113 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
2114 {
2115 struct bnxt_qplib_q *rq = &qp->rq;
2116
2117 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
2118 }
2119
bnxt_qplib_post_recv(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)2120 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
2121 struct bnxt_qplib_swqe *wqe)
2122 {
2123 struct bnxt_qplib_nq_work *nq_work = NULL;
2124 struct bnxt_qplib_q *rq = &qp->rq;
2125 struct rq_wqe_hdr *base_hdr;
2126 struct rq_ext_hdr *ext_hdr;
2127 struct bnxt_qplib_hwq *hwq;
2128 struct bnxt_qplib_swq *swq;
2129 bool sch_handler = false;
2130 u32 wqe_idx, idx;
2131 u16 wqe_sz;
2132 int rc = 0;
2133
2134 hwq = &rq->hwq;
2135 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
2136 dev_err(&hwq->pdev->dev,
2137 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
2138 qp->id, qp->state);
2139 rc = -EINVAL;
2140 goto done;
2141 }
2142
2143 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
2144 dev_err(&hwq->pdev->dev,
2145 "FP: QP (0x%x) RQ is full!\n", qp->id);
2146 rc = -EINVAL;
2147 goto done;
2148 }
2149
2150 swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
2151 swq->wr_id = wqe->wr_id;
2152 swq->slots = rq->dbinfo.max_slot;
2153
2154 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2155 sch_handler = true;
2156 dev_dbg(&hwq->pdev->dev,
2157 "%s: Error QP. Scheduling for poll_cq\n", __func__);
2158 goto queue_err;
2159 }
2160
2161 idx = 0;
2162 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2163 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2164 memset(base_hdr, 0, sizeof(struct sq_sge));
2165 memset(ext_hdr, 0, sizeof(struct sq_sge));
2166 wqe_sz = (sizeof(struct rq_wqe_hdr) +
2167 wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2168 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2169 if (!wqe->num_sge) {
2170 struct sq_sge *sge;
2171
2172 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2173 sge->size = 0;
2174 wqe_sz++;
2175 }
2176 base_hdr->wqe_type = wqe->type;
2177 base_hdr->flags = wqe->flags;
2178 base_hdr->wqe_size = wqe_sz;
2179 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2180 queue_err:
2181 bnxt_qplib_swq_mod_start(rq, wqe_idx);
2182 bnxt_qplib_hwq_incr_prod(&rq->dbinfo, hwq, swq->slots);
2183 done:
2184 if (sch_handler) {
2185 nq_work = kzalloc_obj(*nq_work, GFP_ATOMIC);
2186 if (nq_work) {
2187 nq_work->cq = qp->rcq;
2188 nq_work->nq = qp->rcq->nq;
2189 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2190 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2191 } else {
2192 dev_err(&hwq->pdev->dev,
2193 "FP: Failed to allocate RQ nq_work!\n");
2194 rc = -ENOMEM;
2195 }
2196 }
2197
2198 return rc;
2199 }
2200
2201 /* CQ */
bnxt_qplib_create_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2202 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2203 {
2204 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2205 struct bnxt_qplib_hwq_attr hwq_attr = {};
2206 struct creq_create_cq_resp resp = {};
2207 struct bnxt_qplib_cmdqmsg msg = {};
2208 struct cmdq_create_cq req = {};
2209 struct bnxt_qplib_pbl *pbl;
2210 u32 coalescing = 0;
2211 u32 pg_sz_lvl;
2212 int rc;
2213
2214 if (!cq->dpi) {
2215 dev_err(&rcfw->pdev->dev,
2216 "FP: CREATE_CQ failed due to NULL DPI\n");
2217 return -EINVAL;
2218 }
2219
2220 cq->dbinfo.flags = 0;
2221 hwq_attr.res = res;
2222 hwq_attr.depth = cq->max_wqe;
2223 hwq_attr.stride = sizeof(struct cq_base);
2224 hwq_attr.type = HWQ_TYPE_QUEUE;
2225 hwq_attr.sginfo = &cq->sg_info;
2226 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2227 if (rc)
2228 return rc;
2229
2230 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2231 CMDQ_BASE_OPCODE_CREATE_CQ,
2232 sizeof(req));
2233
2234 req.dpi = cpu_to_le32(cq->dpi->dpi);
2235 req.cq_handle = cpu_to_le64(cq->cq_handle);
2236 req.cq_size = cpu_to_le32(cq->max_wqe);
2237
2238 if (_is_cq_coalescing_supported(res->dattr->dev_cap_flags2) &&
2239 cq->coalescing->enable) {
2240 req.flags |= cpu_to_le16(CMDQ_CREATE_CQ_FLAGS_COALESCING_VALID);
2241 coalescing |= ((cq->coalescing->buf_maxtime <<
2242 CMDQ_CREATE_CQ_BUF_MAXTIME_SFT) &
2243 CMDQ_CREATE_CQ_BUF_MAXTIME_MASK);
2244 coalescing |= ((cq->coalescing->normal_maxbuf <<
2245 CMDQ_CREATE_CQ_NORMAL_MAXBUF_SFT) &
2246 CMDQ_CREATE_CQ_NORMAL_MAXBUF_MASK);
2247 coalescing |= ((cq->coalescing->during_maxbuf <<
2248 CMDQ_CREATE_CQ_DURING_MAXBUF_SFT) &
2249 CMDQ_CREATE_CQ_DURING_MAXBUF_MASK);
2250 if (cq->coalescing->en_ring_idle_mode)
2251 coalescing |= CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2252 else
2253 coalescing &= ~CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2254 req.coalescing = cpu_to_le32(coalescing);
2255 }
2256
2257 pbl = &cq->hwq.pbl[PBL_LVL_0];
2258 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2259 CMDQ_CREATE_CQ_PG_SIZE_SFT);
2260 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2261 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2262 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2263 req.cq_fco_cnq_id = cpu_to_le32(
2264 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2265 CMDQ_CREATE_CQ_CNQ_ID_SFT);
2266 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2267 sizeof(resp), 0);
2268 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2269 if (rc)
2270 goto fail;
2271
2272 cq->id = le32_to_cpu(resp.xid);
2273 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2274 init_waitqueue_head(&cq->waitq);
2275 INIT_LIST_HEAD(&cq->sqf_head);
2276 INIT_LIST_HEAD(&cq->rqf_head);
2277 spin_lock_init(&cq->compl_lock);
2278 spin_lock_init(&cq->flush_lock);
2279
2280 cq->dbinfo.hwq = &cq->hwq;
2281 cq->dbinfo.xid = cq->id;
2282 cq->dbinfo.db = cq->dpi->dbr;
2283 cq->dbinfo.priv_db = res->dpi_tbl.priv_db;
2284 cq->dbinfo.flags = 0;
2285 cq->dbinfo.toggle = 0;
2286
2287 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2288
2289 return 0;
2290
2291 fail:
2292 bnxt_qplib_free_hwq(res, &cq->hwq);
2293 return rc;
2294 }
2295
bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2296 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2297 struct bnxt_qplib_cq *cq)
2298 {
2299 bnxt_qplib_free_hwq(res, &cq->hwq);
2300 memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2301 /* Reset only the cons bit in the flags */
2302 cq->dbinfo.flags &= ~(1UL << BNXT_QPLIB_FLAG_EPOCH_CONS_SHIFT);
2303 }
2304
bnxt_qplib_resize_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq,int new_cqes)2305 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2306 int new_cqes)
2307 {
2308 struct bnxt_qplib_hwq_attr hwq_attr = {};
2309 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2310 struct creq_resize_cq_resp resp = {};
2311 struct bnxt_qplib_cmdqmsg msg = {};
2312 struct cmdq_resize_cq req = {};
2313 struct bnxt_qplib_pbl *pbl;
2314 u32 pg_sz, lvl, new_sz;
2315 int rc;
2316
2317 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2318 CMDQ_BASE_OPCODE_RESIZE_CQ,
2319 sizeof(req));
2320 hwq_attr.sginfo = &cq->sg_info;
2321 hwq_attr.res = res;
2322 hwq_attr.depth = new_cqes;
2323 hwq_attr.stride = sizeof(struct cq_base);
2324 hwq_attr.type = HWQ_TYPE_QUEUE;
2325 rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2326 if (rc)
2327 return rc;
2328
2329 req.cq_cid = cpu_to_le32(cq->id);
2330 pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2331 pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2332 lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2333 CMDQ_RESIZE_CQ_LVL_MASK;
2334 new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2335 CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2336 req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2337 req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2338
2339 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2340 sizeof(resp), 0);
2341 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2342 return rc;
2343 }
2344
bnxt_qplib_destroy_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2345 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2346 {
2347 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2348 struct creq_destroy_cq_resp resp = {};
2349 struct bnxt_qplib_cmdqmsg msg = {};
2350 struct cmdq_destroy_cq req = {};
2351 u16 total_cnq_events;
2352 int rc;
2353
2354 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2355 CMDQ_BASE_OPCODE_DESTROY_CQ,
2356 sizeof(req));
2357
2358 req.cq_cid = cpu_to_le32(cq->id);
2359 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2360 sizeof(resp), 0);
2361 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2362 if (rc)
2363 return rc;
2364 total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2365 __wait_for_all_nqes(cq, total_cnq_events);
2366 bnxt_qplib_free_hwq(res, &cq->hwq);
2367 return 0;
2368 }
2369
__flush_sq(struct bnxt_qplib_q * sq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2370 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2371 struct bnxt_qplib_cqe **pcqe, int *budget)
2372 {
2373 struct bnxt_qplib_cqe *cqe;
2374 u32 start, last;
2375 int rc = 0;
2376
2377 /* Now complete all outstanding SQEs with FLUSHED_ERR */
2378 start = sq->swq_start;
2379 cqe = *pcqe;
2380 while (*budget) {
2381 last = sq->swq_last;
2382 if (start == last)
2383 break;
2384 /* Skip the FENCE WQE completions */
2385 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2386 bnxt_qplib_cancel_phantom_processing(qp);
2387 goto skip_compl;
2388 }
2389 memset(cqe, 0, sizeof(*cqe));
2390 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2391 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2392 cqe->qp_handle = (u64)(unsigned long)qp;
2393 cqe->wr_id = sq->swq[last].wr_id;
2394 cqe->src_qp = qp->id;
2395 cqe->type = sq->swq[last].type;
2396 cqe++;
2397 (*budget)--;
2398 skip_compl:
2399 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2400 sq->swq[last].slots, &sq->dbinfo.flags);
2401 sq->swq_last = sq->swq[last].next_idx;
2402 }
2403 *pcqe = cqe;
2404 if (!(*budget) && sq->swq_last != start)
2405 /* Out of budget */
2406 rc = -EAGAIN;
2407
2408 return rc;
2409 }
2410
__flush_rq(struct bnxt_qplib_q * rq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2411 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2412 struct bnxt_qplib_cqe **pcqe, int *budget)
2413 {
2414 struct bnxt_qplib_cqe *cqe;
2415 u32 start, last;
2416 int opcode = 0;
2417 int rc = 0;
2418
2419 switch (qp->type) {
2420 case CMDQ_CREATE_QP1_TYPE_GSI:
2421 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2422 break;
2423 case CMDQ_CREATE_QP_TYPE_RC:
2424 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2425 break;
2426 case CMDQ_CREATE_QP_TYPE_UD:
2427 case CMDQ_CREATE_QP_TYPE_GSI:
2428 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2429 break;
2430 }
2431
2432 /* Flush the rest of the RQ */
2433 start = rq->swq_start;
2434 cqe = *pcqe;
2435 while (*budget) {
2436 last = rq->swq_last;
2437 if (last == start)
2438 break;
2439 memset(cqe, 0, sizeof(*cqe));
2440 cqe->status =
2441 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2442 cqe->opcode = opcode;
2443 cqe->qp_handle = (unsigned long)qp;
2444 cqe->wr_id = rq->swq[last].wr_id;
2445 cqe++;
2446 (*budget)--;
2447 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2448 rq->swq[last].slots, &rq->dbinfo.flags);
2449 rq->swq_last = rq->swq[last].next_idx;
2450 }
2451 *pcqe = cqe;
2452 if (!*budget && rq->swq_last != start)
2453 /* Out of budget */
2454 rc = -EAGAIN;
2455
2456 return rc;
2457 }
2458
bnxt_qplib_mark_qp_error(void * qp_handle)2459 void bnxt_qplib_mark_qp_error(void *qp_handle)
2460 {
2461 struct bnxt_qplib_qp *qp = qp_handle;
2462
2463 if (!qp)
2464 return;
2465
2466 /* Must block new posting of SQ and RQ */
2467 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2468 bnxt_qplib_cancel_phantom_processing(qp);
2469 }
2470
2471 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2472 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2473 */
do_wa9060(struct bnxt_qplib_qp * qp,struct bnxt_qplib_cq * cq,u32 cq_cons,u32 swq_last,u32 cqe_sq_cons)2474 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2475 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2476 {
2477 u32 peek_sw_cq_cons, peek_sq_cons_idx, peek_flags;
2478 struct bnxt_qplib_q *sq = &qp->sq;
2479 struct cq_req *peek_req_hwcqe;
2480 struct bnxt_qplib_qp *peek_qp;
2481 struct bnxt_qplib_q *peek_sq;
2482 struct bnxt_qplib_swq *swq;
2483 struct cq_base *peek_hwcqe;
2484 int i, rc = 0;
2485
2486 /* Normal mode */
2487 /* Check for the psn_search marking before completing */
2488 swq = &sq->swq[swq_last];
2489 if (swq->psn_search &&
2490 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2491 /* Unmark */
2492 swq->psn_search->flags_next_psn = cpu_to_le32
2493 (le32_to_cpu(swq->psn_search->flags_next_psn)
2494 & ~0x80000000);
2495 dev_dbg(&cq->hwq.pdev->dev,
2496 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2497 cq_cons, qp->id, swq_last, cqe_sq_cons);
2498 sq->condition = true;
2499 sq->send_phantom = true;
2500
2501 /* TODO: Only ARM if the previous SQE is ARMALL */
2502 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2503 rc = -EAGAIN;
2504 goto out;
2505 }
2506 if (sq->condition) {
2507 /* Peek at the completions */
2508 peek_flags = cq->dbinfo.flags;
2509 peek_sw_cq_cons = cq_cons;
2510 i = cq->hwq.max_elements;
2511 while (i--) {
2512 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2513 peek_sw_cq_cons, NULL);
2514 /* If the next hwcqe is VALID */
2515 if (CQE_CMP_VALID(peek_hwcqe, peek_flags)) {
2516 /*
2517 * The valid test of the entry must be done first before
2518 * reading any further.
2519 */
2520 dma_rmb();
2521 /* If the next hwcqe is a REQ */
2522 if ((peek_hwcqe->cqe_type_toggle &
2523 CQ_BASE_CQE_TYPE_MASK) ==
2524 CQ_BASE_CQE_TYPE_REQ) {
2525 peek_req_hwcqe = (struct cq_req *)
2526 peek_hwcqe;
2527 peek_qp = (struct bnxt_qplib_qp *)
2528 ((unsigned long)
2529 le64_to_cpu
2530 (peek_req_hwcqe->qp_handle));
2531 peek_sq = &peek_qp->sq;
2532 peek_sq_cons_idx =
2533 ((le16_to_cpu(
2534 peek_req_hwcqe->sq_cons_idx)
2535 - 1) % sq->max_wqe);
2536 /* If the hwcqe's sq's wr_id matches */
2537 if (peek_sq == sq &&
2538 sq->swq[peek_sq_cons_idx].wr_id ==
2539 BNXT_QPLIB_FENCE_WRID) {
2540 /*
2541 * Unbreak only if the phantom
2542 * comes back
2543 */
2544 dev_dbg(&cq->hwq.pdev->dev,
2545 "FP: Got Phantom CQE\n");
2546 sq->condition = false;
2547 sq->single = true;
2548 rc = 0;
2549 goto out;
2550 }
2551 }
2552 /* Valid but not the phantom, so keep looping */
2553 } else {
2554 /* Not valid yet, just exit and wait */
2555 rc = -EINVAL;
2556 goto out;
2557 }
2558 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements,
2559 &peek_sw_cq_cons,
2560 1, &peek_flags);
2561 }
2562 dev_err(&cq->hwq.pdev->dev,
2563 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2564 cq_cons, qp->id, swq_last, cqe_sq_cons);
2565 rc = -EINVAL;
2566 }
2567 out:
2568 return rc;
2569 }
2570
bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q * sq,u32 cqe_slot)2571 static int bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q *sq, u32 cqe_slot)
2572 {
2573 struct bnxt_qplib_hwq *sq_hwq;
2574 struct bnxt_qplib_swq *swq;
2575 int cqe_sq_cons = -1;
2576 u32 start, last;
2577
2578 sq_hwq = &sq->hwq;
2579
2580 start = sq->swq_start;
2581 last = sq->swq_last;
2582
2583 while (last != start) {
2584 swq = &sq->swq[last];
2585 if (swq->slot_idx == cqe_slot) {
2586 cqe_sq_cons = swq->next_idx;
2587 dev_err(&sq_hwq->pdev->dev, "%s: Found cons wqe = %d slot = %d\n",
2588 __func__, cqe_sq_cons, cqe_slot);
2589 break;
2590 }
2591
2592 last = swq->next_idx;
2593 }
2594 return cqe_sq_cons;
2595 }
2596
bnxt_qplib_cq_process_req(struct bnxt_qplib_cq * cq,struct cq_req * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget,u32 cq_cons,struct bnxt_qplib_qp ** lib_qp)2597 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2598 struct cq_req *hwcqe,
2599 struct bnxt_qplib_cqe **pcqe, int *budget,
2600 u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2601 {
2602 struct bnxt_qplib_swq *swq;
2603 struct bnxt_qplib_cqe *cqe;
2604 u32 cqe_sq_cons, slot_num;
2605 struct bnxt_qplib_qp *qp;
2606 struct bnxt_qplib_q *sq;
2607 int cqe_cons;
2608 int rc = 0;
2609
2610 qp = (struct bnxt_qplib_qp *)((unsigned long)
2611 le64_to_cpu(hwcqe->qp_handle));
2612 if (!qp) {
2613 dev_err(&cq->hwq.pdev->dev,
2614 "FP: Process Req qp is NULL\n");
2615 return -EINVAL;
2616 }
2617 sq = &qp->sq;
2618
2619 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_sw_wqe;
2620 if (qp->sq.flushed) {
2621 dev_dbg(&cq->hwq.pdev->dev,
2622 "%s: QP in Flush QP = %p\n", __func__, qp);
2623 goto done;
2624 }
2625
2626 if (__is_err_cqe_for_var_wqe(qp, hwcqe->status)) {
2627 slot_num = le16_to_cpu(hwcqe->sq_cons_idx);
2628 cqe_cons = bnxt_qplib_get_cqe_sq_cons(sq, slot_num);
2629 if (cqe_cons < 0) {
2630 dev_err(&cq->hwq.pdev->dev, "%s: Wrong SQ cons cqe_slot_indx = %d\n",
2631 __func__, slot_num);
2632 goto done;
2633 }
2634 cqe_sq_cons = cqe_cons;
2635 dev_err(&cq->hwq.pdev->dev, "%s: cqe_sq_cons = %d swq_last = %d swq_start = %d\n",
2636 __func__, cqe_sq_cons, sq->swq_last, sq->swq_start);
2637 }
2638
2639 /* Require to walk the sq's swq to fabricate CQEs for all previously
2640 * signaled SWQEs due to CQE aggregation from the current sq cons
2641 * to the cqe_sq_cons
2642 */
2643 cqe = *pcqe;
2644 while (*budget) {
2645 if (sq->swq_last == cqe_sq_cons)
2646 /* Done */
2647 break;
2648
2649 swq = &sq->swq[sq->swq_last];
2650 memset(cqe, 0, sizeof(*cqe));
2651 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2652 cqe->qp_handle = (u64)(unsigned long)qp;
2653 cqe->src_qp = qp->id;
2654 cqe->wr_id = swq->wr_id;
2655 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2656 goto skip;
2657 cqe->type = swq->type;
2658
2659 /* For the last CQE, check for status. For errors, regardless
2660 * of the request being signaled or not, it must complete with
2661 * the hwcqe error status
2662 */
2663 if (swq->next_idx == cqe_sq_cons &&
2664 hwcqe->status != CQ_REQ_STATUS_OK) {
2665 cqe->status = hwcqe->status;
2666 dev_err(&cq->hwq.pdev->dev,
2667 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2668 sq->swq_last, cqe->wr_id, cqe->status);
2669 cqe++;
2670 (*budget)--;
2671 bnxt_qplib_mark_qp_error(qp);
2672 /* Add qp to flush list of the CQ */
2673 bnxt_qplib_add_flush_qp(qp);
2674 } else {
2675 /* Before we complete, do WA 9060 */
2676 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
2677 if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2678 cqe_sq_cons)) {
2679 *lib_qp = qp;
2680 goto out;
2681 }
2682 }
2683 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2684 cqe->status = CQ_REQ_STATUS_OK;
2685 cqe++;
2686 (*budget)--;
2687 }
2688 }
2689 skip:
2690 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2691 swq->slots, &sq->dbinfo.flags);
2692 sq->swq_last = swq->next_idx;
2693 if (sq->single)
2694 break;
2695 }
2696 out:
2697 *pcqe = cqe;
2698 if (sq->swq_last != cqe_sq_cons) {
2699 /* Out of budget */
2700 rc = -EAGAIN;
2701 goto done;
2702 }
2703 /*
2704 * Back to normal completion mode only after it has completed all of
2705 * the WC for this CQE
2706 */
2707 sq->single = false;
2708 done:
2709 return rc;
2710 }
2711
bnxt_qplib_release_srqe(struct bnxt_qplib_srq * srq,u32 tag)2712 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2713 {
2714 spin_lock(&srq->hwq.lock);
2715 srq->swq[srq->last_idx].next_idx = (int)tag;
2716 srq->last_idx = (int)tag;
2717 srq->swq[srq->last_idx].next_idx = -1;
2718 bnxt_qplib_hwq_incr_cons(srq->hwq.max_elements, &srq->hwq.cons,
2719 srq->dbinfo.max_slot, &srq->dbinfo.flags);
2720 spin_unlock(&srq->hwq.lock);
2721 }
2722
bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq * cq,struct cq_res_rc * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2723 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2724 struct cq_res_rc *hwcqe,
2725 struct bnxt_qplib_cqe **pcqe,
2726 int *budget)
2727 {
2728 struct bnxt_qplib_srq *srq;
2729 struct bnxt_qplib_cqe *cqe;
2730 struct bnxt_qplib_qp *qp;
2731 struct bnxt_qplib_q *rq;
2732 u32 wr_id_idx;
2733
2734 qp = (struct bnxt_qplib_qp *)((unsigned long)
2735 le64_to_cpu(hwcqe->qp_handle));
2736 if (!qp) {
2737 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2738 return -EINVAL;
2739 }
2740 if (qp->rq.flushed) {
2741 dev_dbg(&cq->hwq.pdev->dev,
2742 "%s: QP in Flush QP = %p\n", __func__, qp);
2743 return 0;
2744 }
2745
2746 cqe = *pcqe;
2747 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2748 cqe->length = le32_to_cpu(hwcqe->length);
2749 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2750 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2751 cqe->flags = le16_to_cpu(hwcqe->flags);
2752 cqe->status = hwcqe->status;
2753 cqe->qp_handle = (u64)(unsigned long)qp;
2754
2755 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2756 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2757 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2758 srq = qp->srq;
2759 if (!srq)
2760 return -EINVAL;
2761 if (wr_id_idx >= srq->hwq.max_elements) {
2762 dev_err(&cq->hwq.pdev->dev,
2763 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2764 wr_id_idx, srq->hwq.max_elements);
2765 return -EINVAL;
2766 }
2767 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2768 bnxt_qplib_release_srqe(srq, wr_id_idx);
2769 cqe++;
2770 (*budget)--;
2771 *pcqe = cqe;
2772 } else {
2773 struct bnxt_qplib_swq *swq;
2774
2775 rq = &qp->rq;
2776 if (wr_id_idx > (rq->max_wqe - 1)) {
2777 dev_err(&cq->hwq.pdev->dev,
2778 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2779 wr_id_idx, rq->max_wqe);
2780 return -EINVAL;
2781 }
2782 if (wr_id_idx != rq->swq_last)
2783 return -EINVAL;
2784 swq = &rq->swq[rq->swq_last];
2785 cqe->wr_id = swq->wr_id;
2786 cqe++;
2787 (*budget)--;
2788 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2789 swq->slots, &rq->dbinfo.flags);
2790 rq->swq_last = swq->next_idx;
2791 *pcqe = cqe;
2792
2793 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2794 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2795 /* Add qp to flush list of the CQ */
2796 bnxt_qplib_add_flush_qp(qp);
2797 }
2798 }
2799
2800 return 0;
2801 }
2802
bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq * cq,struct cq_res_ud * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2803 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2804 struct cq_res_ud *hwcqe,
2805 struct bnxt_qplib_cqe **pcqe,
2806 int *budget)
2807 {
2808 struct bnxt_qplib_srq *srq;
2809 struct bnxt_qplib_cqe *cqe;
2810 struct bnxt_qplib_qp *qp;
2811 struct bnxt_qplib_q *rq;
2812 u32 wr_id_idx;
2813
2814 qp = (struct bnxt_qplib_qp *)((unsigned long)
2815 le64_to_cpu(hwcqe->qp_handle));
2816 if (!qp) {
2817 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2818 return -EINVAL;
2819 }
2820 if (qp->rq.flushed) {
2821 dev_dbg(&cq->hwq.pdev->dev,
2822 "%s: QP in Flush QP = %p\n", __func__, qp);
2823 return 0;
2824 }
2825 cqe = *pcqe;
2826 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2827 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2828 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2829 cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2830 cqe->flags = le16_to_cpu(hwcqe->flags);
2831 cqe->status = hwcqe->status;
2832 cqe->qp_handle = (u64)(unsigned long)qp;
2833 /*FIXME: Endianness fix needed for smace */
2834 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2835 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2836 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2837 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2838 ((le32_to_cpu(
2839 hwcqe->src_qp_high_srq_or_rq_wr_id) &
2840 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2841
2842 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2843 srq = qp->srq;
2844 if (!srq)
2845 return -EINVAL;
2846
2847 if (wr_id_idx >= srq->hwq.max_elements) {
2848 dev_err(&cq->hwq.pdev->dev,
2849 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2850 wr_id_idx, srq->hwq.max_elements);
2851 return -EINVAL;
2852 }
2853 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2854 bnxt_qplib_release_srqe(srq, wr_id_idx);
2855 cqe++;
2856 (*budget)--;
2857 *pcqe = cqe;
2858 } else {
2859 struct bnxt_qplib_swq *swq;
2860
2861 rq = &qp->rq;
2862 if (wr_id_idx > (rq->max_wqe - 1)) {
2863 dev_err(&cq->hwq.pdev->dev,
2864 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2865 wr_id_idx, rq->max_wqe);
2866 return -EINVAL;
2867 }
2868
2869 if (rq->swq_last != wr_id_idx)
2870 return -EINVAL;
2871 swq = &rq->swq[rq->swq_last];
2872 cqe->wr_id = swq->wr_id;
2873 cqe++;
2874 (*budget)--;
2875 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2876 swq->slots, &rq->dbinfo.flags);
2877 rq->swq_last = swq->next_idx;
2878 *pcqe = cqe;
2879
2880 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2881 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2882 /* Add qp to flush list of the CQ */
2883 bnxt_qplib_add_flush_qp(qp);
2884 }
2885 }
2886
2887 return 0;
2888 }
2889
bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq * cq)2890 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2891 {
2892 struct cq_base *hw_cqe;
2893 bool rc = true;
2894
2895 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
2896 /* Check for Valid bit. If the CQE is valid, return false */
2897 rc = !CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags);
2898 return rc;
2899 }
2900
bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq * cq,struct cq_res_raweth_qp1 * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2901 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2902 struct cq_res_raweth_qp1 *hwcqe,
2903 struct bnxt_qplib_cqe **pcqe,
2904 int *budget)
2905 {
2906 struct bnxt_qplib_qp *qp;
2907 struct bnxt_qplib_q *rq;
2908 struct bnxt_qplib_srq *srq;
2909 struct bnxt_qplib_cqe *cqe;
2910 u32 wr_id_idx;
2911
2912 qp = (struct bnxt_qplib_qp *)((unsigned long)
2913 le64_to_cpu(hwcqe->qp_handle));
2914 if (!qp) {
2915 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2916 return -EINVAL;
2917 }
2918 if (qp->rq.flushed) {
2919 dev_dbg(&cq->hwq.pdev->dev,
2920 "%s: QP in Flush QP = %p\n", __func__, qp);
2921 return 0;
2922 }
2923 cqe = *pcqe;
2924 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2925 cqe->flags = le16_to_cpu(hwcqe->flags);
2926 cqe->qp_handle = (u64)(unsigned long)qp;
2927
2928 wr_id_idx =
2929 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2930 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2931 cqe->src_qp = qp->id;
2932 if (qp->id == 1 && !cqe->length) {
2933 /* Add workaround for the length misdetection */
2934 cqe->length = 296;
2935 } else {
2936 cqe->length = le16_to_cpu(hwcqe->length);
2937 }
2938 cqe->pkey_index = qp->pkey_index;
2939 memcpy(cqe->smac, qp->smac, 6);
2940
2941 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2942 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2943 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2944
2945 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2946 srq = qp->srq;
2947 if (!srq) {
2948 dev_err(&cq->hwq.pdev->dev,
2949 "FP: SRQ used but not defined??\n");
2950 return -EINVAL;
2951 }
2952 if (wr_id_idx >= srq->hwq.max_elements) {
2953 dev_err(&cq->hwq.pdev->dev,
2954 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2955 wr_id_idx, srq->hwq.max_elements);
2956 return -EINVAL;
2957 }
2958 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2959 bnxt_qplib_release_srqe(srq, wr_id_idx);
2960 cqe++;
2961 (*budget)--;
2962 *pcqe = cqe;
2963 } else {
2964 struct bnxt_qplib_swq *swq;
2965
2966 rq = &qp->rq;
2967 if (wr_id_idx > (rq->max_wqe - 1)) {
2968 dev_err(&cq->hwq.pdev->dev,
2969 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2970 wr_id_idx, rq->max_wqe);
2971 return -EINVAL;
2972 }
2973 if (rq->swq_last != wr_id_idx)
2974 return -EINVAL;
2975 swq = &rq->swq[rq->swq_last];
2976 cqe->wr_id = swq->wr_id;
2977 cqe++;
2978 (*budget)--;
2979 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2980 swq->slots, &rq->dbinfo.flags);
2981 rq->swq_last = swq->next_idx;
2982 *pcqe = cqe;
2983
2984 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2985 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2986 /* Add qp to flush list of the CQ */
2987 bnxt_qplib_add_flush_qp(qp);
2988 }
2989 }
2990
2991 return 0;
2992 }
2993
bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq * cq,struct cq_terminal * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2994 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2995 struct cq_terminal *hwcqe,
2996 struct bnxt_qplib_cqe **pcqe,
2997 int *budget)
2998 {
2999 struct bnxt_qplib_qp *qp;
3000 struct bnxt_qplib_q *sq, *rq;
3001 struct bnxt_qplib_cqe *cqe;
3002 u32 swq_last = 0, cqe_cons;
3003 int rc = 0;
3004
3005 /* Check the Status */
3006 if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
3007 dev_warn(&cq->hwq.pdev->dev,
3008 "FP: CQ Process Terminal Error status = 0x%x\n",
3009 hwcqe->status);
3010
3011 qp = (struct bnxt_qplib_qp *)((unsigned long)
3012 le64_to_cpu(hwcqe->qp_handle));
3013 if (!qp)
3014 return -EINVAL;
3015
3016 /* Must block new posting of SQ and RQ */
3017 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
3018
3019 sq = &qp->sq;
3020 rq = &qp->rq;
3021
3022 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
3023 if (cqe_cons == 0xFFFF)
3024 goto do_rq;
3025 cqe_cons %= sq->max_sw_wqe;
3026
3027 if (qp->sq.flushed) {
3028 dev_dbg(&cq->hwq.pdev->dev,
3029 "%s: QP in Flush QP = %p\n", __func__, qp);
3030 goto sq_done;
3031 }
3032
3033 /* Terminal CQE can also include aggregated successful CQEs prior.
3034 * So we must complete all CQEs from the current sq's cons to the
3035 * cq_cons with status OK
3036 */
3037 cqe = *pcqe;
3038 while (*budget) {
3039 swq_last = sq->swq_last;
3040 if (swq_last == cqe_cons)
3041 break;
3042 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
3043 memset(cqe, 0, sizeof(*cqe));
3044 cqe->status = CQ_REQ_STATUS_OK;
3045 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
3046 cqe->qp_handle = (u64)(unsigned long)qp;
3047 cqe->src_qp = qp->id;
3048 cqe->wr_id = sq->swq[swq_last].wr_id;
3049 cqe->type = sq->swq[swq_last].type;
3050 cqe++;
3051 (*budget)--;
3052 }
3053 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
3054 sq->swq[swq_last].slots, &sq->dbinfo.flags);
3055 sq->swq_last = sq->swq[swq_last].next_idx;
3056 }
3057 *pcqe = cqe;
3058 if (!(*budget) && swq_last != cqe_cons) {
3059 /* Out of budget */
3060 rc = -EAGAIN;
3061 goto sq_done;
3062 }
3063 sq_done:
3064 if (rc)
3065 return rc;
3066 do_rq:
3067 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
3068 if (cqe_cons == 0xFFFF) {
3069 goto done;
3070 } else if (cqe_cons > rq->max_wqe - 1) {
3071 dev_err(&cq->hwq.pdev->dev,
3072 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
3073 cqe_cons, rq->max_wqe);
3074 rc = -EINVAL;
3075 goto done;
3076 }
3077
3078 if (qp->rq.flushed) {
3079 dev_dbg(&cq->hwq.pdev->dev,
3080 "%s: QP in Flush QP = %p\n", __func__, qp);
3081 rc = 0;
3082 goto done;
3083 }
3084
3085 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
3086 * from the current rq->cons to the rq->prod regardless what the
3087 * rq->cons the terminal CQE indicates
3088 */
3089
3090 /* Add qp to flush list of the CQ */
3091 bnxt_qplib_add_flush_qp(qp);
3092 done:
3093 return rc;
3094 }
3095
bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq * cq,struct cq_cutoff * hwcqe)3096 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
3097 struct cq_cutoff *hwcqe)
3098 {
3099 /* Check the Status */
3100 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
3101 dev_err(&cq->hwq.pdev->dev,
3102 "FP: CQ Process Cutoff Error status = 0x%x\n",
3103 hwcqe->status);
3104 return -EINVAL;
3105 }
3106 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
3107 wake_up_interruptible(&cq->waitq);
3108
3109 return 0;
3110 }
3111
bnxt_qplib_process_flush_list(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes)3112 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
3113 struct bnxt_qplib_cqe *cqe,
3114 int num_cqes)
3115 {
3116 struct bnxt_qplib_qp *qp = NULL;
3117 u32 budget = num_cqes;
3118 unsigned long flags;
3119
3120 spin_lock_irqsave(&cq->flush_lock, flags);
3121 list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
3122 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
3123 __flush_sq(&qp->sq, qp, &cqe, &budget);
3124 }
3125
3126 list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
3127 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
3128 __flush_rq(&qp->rq, qp, &cqe, &budget);
3129 }
3130 spin_unlock_irqrestore(&cq->flush_lock, flags);
3131
3132 return num_cqes - budget;
3133 }
3134
bnxt_qplib_poll_cq(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes,struct bnxt_qplib_qp ** lib_qp)3135 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
3136 int num_cqes, struct bnxt_qplib_qp **lib_qp)
3137 {
3138 struct cq_base *hw_cqe;
3139 int budget, rc = 0;
3140 u32 hw_polled = 0;
3141 u8 type;
3142
3143 budget = num_cqes;
3144
3145 while (budget) {
3146 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
3147
3148 /* Check for Valid bit */
3149 if (!CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags))
3150 break;
3151
3152 /*
3153 * The valid test of the entry must be done first before
3154 * reading any further.
3155 */
3156 dma_rmb();
3157 /* From the device's respective CQE format to qplib_wc*/
3158 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
3159 switch (type) {
3160 case CQ_BASE_CQE_TYPE_REQ:
3161 rc = bnxt_qplib_cq_process_req(cq,
3162 (struct cq_req *)hw_cqe,
3163 &cqe, &budget,
3164 cq->hwq.cons, lib_qp);
3165 break;
3166 case CQ_BASE_CQE_TYPE_RES_RC:
3167 rc = bnxt_qplib_cq_process_res_rc(cq,
3168 (struct cq_res_rc *)
3169 hw_cqe, &cqe,
3170 &budget);
3171 break;
3172 case CQ_BASE_CQE_TYPE_RES_UD:
3173 rc = bnxt_qplib_cq_process_res_ud
3174 (cq, (struct cq_res_ud *)hw_cqe, &cqe,
3175 &budget);
3176 break;
3177 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
3178 rc = bnxt_qplib_cq_process_res_raweth_qp1
3179 (cq, (struct cq_res_raweth_qp1 *)
3180 hw_cqe, &cqe, &budget);
3181 break;
3182 case CQ_BASE_CQE_TYPE_TERMINAL:
3183 rc = bnxt_qplib_cq_process_terminal
3184 (cq, (struct cq_terminal *)hw_cqe,
3185 &cqe, &budget);
3186 break;
3187 case CQ_BASE_CQE_TYPE_CUT_OFF:
3188 bnxt_qplib_cq_process_cutoff
3189 (cq, (struct cq_cutoff *)hw_cqe);
3190 /* Done processing this CQ */
3191 goto exit;
3192 default:
3193 dev_err(&cq->hwq.pdev->dev,
3194 "process_cq unknown type 0x%lx\n",
3195 hw_cqe->cqe_type_toggle &
3196 CQ_BASE_CQE_TYPE_MASK);
3197 rc = -EINVAL;
3198 break;
3199 }
3200 if (rc < 0) {
3201 if (rc == -EAGAIN)
3202 break;
3203 /* Error while processing the CQE, just skip to the
3204 * next one
3205 */
3206 if (type != CQ_BASE_CQE_TYPE_TERMINAL)
3207 dev_err(&cq->hwq.pdev->dev,
3208 "process_cqe error rc = 0x%x\n", rc);
3209 }
3210 hw_polled++;
3211 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements, &cq->hwq.cons,
3212 1, &cq->dbinfo.flags);
3213
3214 }
3215 if (hw_polled)
3216 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
3217 exit:
3218 return num_cqes - budget;
3219 }
3220
bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq * cq,u32 arm_type)3221 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3222 {
3223 cq->dbinfo.toggle = cq->toggle;
3224 if (arm_type)
3225 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3226 /* Using cq->arm_state variable to track whether to issue cq handler */
3227 atomic_set(&cq->arm_state, 1);
3228 }
3229
bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp * qp)3230 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3231 {
3232 flush_workqueue(qp->scq->nq->cqn_wq);
3233 if (qp->scq != qp->rcq)
3234 flush_workqueue(qp->rcq->nq->cqn_wq);
3235 }
3236