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 = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
692 GFP_KERNEL);
693 if (!srq->swq) {
694 rc = -ENOMEM;
695 goto fail;
696 }
697 for (idx = 0; idx < srq->hwq.max_elements; idx++)
698 srq->swq[idx].next_idx = idx + 1;
699 srq->swq[srq->last_idx].next_idx = -1;
700 }
701
702 srq->id = le32_to_cpu(resp.xid);
703 srq->dbinfo.hwq = &srq->hwq;
704 srq->dbinfo.xid = srq->id;
705 srq->dbinfo.db = srq->dpi->dbr;
706 srq->dbinfo.max_slot = 1;
707 srq->dbinfo.priv_db = res->dpi_tbl.priv_db;
708 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
709
710 return 0;
711 fail:
712 bnxt_qplib_free_hwq(res, &srq->hwq);
713 kfree(srq->swq);
714
715 return rc;
716 }
717
bnxt_qplib_query_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)718 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
719 struct bnxt_qplib_srq *srq)
720 {
721 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
722 struct creq_query_srq_resp resp = {};
723 struct bnxt_qplib_cmdqmsg msg = {};
724 struct bnxt_qplib_rcfw_sbuf sbuf;
725 struct creq_query_srq_resp_sb *sb;
726 struct cmdq_query_srq req = {};
727 int rc;
728
729 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
730 CMDQ_BASE_OPCODE_QUERY_SRQ,
731 sizeof(req));
732
733 /* Configure the request */
734 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
735 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
736 &sbuf.dma_addr, GFP_KERNEL);
737 if (!sbuf.sb)
738 return -ENOMEM;
739 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
740 req.srq_cid = cpu_to_le32(srq->id);
741 sb = sbuf.sb;
742 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
743 sizeof(resp), 0);
744 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
745 if (!rc)
746 srq->threshold = le16_to_cpu(sb->srq_limit);
747 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
748 sbuf.sb, sbuf.dma_addr);
749
750 return rc;
751 }
752
bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq * srq,struct bnxt_qplib_swqe * wqe)753 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
754 struct bnxt_qplib_swqe *wqe)
755 {
756 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
757 struct rq_wqe *srqe;
758 struct sq_sge *hw_sge;
759 int i, next;
760
761 spin_lock(&srq_hwq->lock);
762 if (srq->start_idx == srq->last_idx) {
763 dev_err(&srq_hwq->pdev->dev,
764 "FP: SRQ (0x%x) is full!\n", srq->id);
765 spin_unlock(&srq_hwq->lock);
766 return -EINVAL;
767 }
768 next = srq->start_idx;
769 srq->start_idx = srq->swq[next].next_idx;
770 spin_unlock(&srq_hwq->lock);
771
772 srqe = bnxt_qplib_get_qe(srq_hwq, srq_hwq->prod, NULL);
773 memset(srqe, 0, srq->wqe_size);
774 /* Calculate wqe_size16 and data_len */
775 for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
776 i < wqe->num_sge; i++, hw_sge++) {
777 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
778 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
779 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
780 }
781 srqe->wqe_type = wqe->type;
782 srqe->flags = wqe->flags;
783 srqe->wqe_size = wqe->num_sge +
784 ((offsetof(typeof(*srqe), data) + 15) >> 4);
785 srqe->wr_id[0] = cpu_to_le32((u32)next);
786 srq->swq[next].wr_id = wqe->wr_id;
787
788 bnxt_qplib_hwq_incr_prod(&srq->dbinfo, srq_hwq, srq->dbinfo.max_slot);
789
790 /* Ring DB */
791 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
792
793 return 0;
794 }
795
796 /* QP */
797
bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q * que)798 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
799 {
800 int indx;
801
802 que->swq = kcalloc(que->max_sw_wqe, sizeof(*que->swq), GFP_KERNEL);
803 if (!que->swq)
804 return -ENOMEM;
805
806 que->swq_start = 0;
807 que->swq_last = que->max_sw_wqe - 1;
808 for (indx = 0; indx < que->max_sw_wqe; indx++)
809 que->swq[indx].next_idx = indx + 1;
810 que->swq[que->swq_last].next_idx = 0; /* Make it circular */
811 que->swq_last = 0;
812
813 return 0;
814 }
815
bnxt_qplib_create_qp1(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)816 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
817 {
818 struct bnxt_qplib_hwq_attr hwq_attr = {};
819 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
820 struct creq_create_qp1_resp resp = {};
821 struct bnxt_qplib_cmdqmsg msg = {};
822 struct bnxt_qplib_q *sq = &qp->sq;
823 struct bnxt_qplib_q *rq = &qp->rq;
824 struct cmdq_create_qp1 req = {};
825 struct bnxt_qplib_pbl *pbl;
826 u32 qp_flags = 0;
827 u8 pg_sz_lvl;
828 u32 tbl_indx;
829 int rc;
830
831 sq->dbinfo.flags = 0;
832 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
833 CMDQ_BASE_OPCODE_CREATE_QP1,
834 sizeof(req));
835 /* General */
836 req.type = qp->type;
837 req.dpi = cpu_to_le32(qp->dpi->dpi);
838 req.qp_handle = cpu_to_le64(qp->qp_handle);
839
840 /* SQ */
841 hwq_attr.res = res;
842 hwq_attr.sginfo = &sq->sg_info;
843 hwq_attr.stride = sizeof(struct sq_sge);
844 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, false);
845 hwq_attr.type = HWQ_TYPE_QUEUE;
846 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
847 if (rc)
848 return rc;
849
850 rc = bnxt_qplib_alloc_init_swq(sq);
851 if (rc)
852 goto fail_sq;
853
854 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
855 pbl = &sq->hwq.pbl[PBL_LVL_0];
856 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
857 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
858 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
859 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
860 req.sq_pg_size_sq_lvl = pg_sz_lvl;
861 req.sq_fwo_sq_sge =
862 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
863 CMDQ_CREATE_QP1_SQ_SGE_SFT);
864 req.scq_cid = cpu_to_le32(qp->scq->id);
865
866 /* RQ */
867 if (rq->max_wqe) {
868 rq->dbinfo.flags = 0;
869 hwq_attr.res = res;
870 hwq_attr.sginfo = &rq->sg_info;
871 hwq_attr.stride = sizeof(struct sq_sge);
872 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
873 hwq_attr.type = HWQ_TYPE_QUEUE;
874 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
875 if (rc)
876 goto sq_swq;
877 rc = bnxt_qplib_alloc_init_swq(rq);
878 if (rc)
879 goto fail_rq;
880 req.rq_size = cpu_to_le32(rq->max_wqe);
881 pbl = &rq->hwq.pbl[PBL_LVL_0];
882 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
883 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
884 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
885 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
886 req.rq_pg_size_rq_lvl = pg_sz_lvl;
887 req.rq_fwo_rq_sge =
888 cpu_to_le16((rq->max_sge &
889 CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
890 CMDQ_CREATE_QP1_RQ_SGE_SFT);
891 }
892 req.rcq_cid = cpu_to_le32(qp->rcq->id);
893 /* Header buffer - allow hdr_buf pass in */
894 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
895 if (rc) {
896 rc = -ENOMEM;
897 goto rq_rwq;
898 }
899 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
900 req.qp_flags = cpu_to_le32(qp_flags);
901 req.pd_id = cpu_to_le32(qp->pd->id);
902
903 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
904 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
905 if (rc)
906 goto fail;
907
908 qp->id = le32_to_cpu(resp.xid);
909 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
910 qp->cctx = res->cctx;
911 sq->dbinfo.hwq = &sq->hwq;
912 sq->dbinfo.xid = qp->id;
913 sq->dbinfo.db = qp->dpi->dbr;
914 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
915 if (rq->max_wqe) {
916 rq->dbinfo.hwq = &rq->hwq;
917 rq->dbinfo.xid = qp->id;
918 rq->dbinfo.db = qp->dpi->dbr;
919 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
920 }
921 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
922 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
923 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
924
925 return 0;
926
927 fail:
928 bnxt_qplib_free_qp_hdr_buf(res, qp);
929 rq_rwq:
930 kfree(rq->swq);
931 fail_rq:
932 bnxt_qplib_free_hwq(res, &rq->hwq);
933 sq_swq:
934 kfree(sq->swq);
935 fail_sq:
936 bnxt_qplib_free_hwq(res, &sq->hwq);
937 return rc;
938 }
939
bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp * qp,int size)940 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
941 {
942 struct bnxt_qplib_hwq *hwq;
943 struct bnxt_qplib_q *sq;
944 u64 fpsne, psn_pg;
945 u16 indx_pad = 0;
946
947 sq = &qp->sq;
948 hwq = &sq->hwq;
949 /* First psn entry */
950 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
951 if (!IS_ALIGNED(fpsne, PAGE_SIZE))
952 indx_pad = (fpsne & ~PAGE_MASK) / size;
953 hwq->pad_pgofft = indx_pad;
954 hwq->pad_pg = (u64 *)psn_pg;
955 hwq->pad_stride = size;
956 }
957
bnxt_qplib_create_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)958 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
959 {
960 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
961 struct bnxt_qplib_hwq_attr hwq_attr = {};
962 struct bnxt_qplib_sg_info sginfo = {};
963 struct creq_create_qp_resp resp = {};
964 struct bnxt_qplib_cmdqmsg msg = {};
965 struct bnxt_qplib_q *sq = &qp->sq;
966 struct bnxt_qplib_q *rq = &qp->rq;
967 struct cmdq_create_qp req = {};
968 int rc, req_size, psn_sz = 0;
969 struct bnxt_qplib_hwq *xrrq;
970 struct bnxt_qplib_pbl *pbl;
971 u32 qp_flags = 0;
972 u8 pg_sz_lvl;
973 u32 tbl_indx;
974 u16 nsge;
975
976 qp->is_host_msn_tbl = _is_host_msn_table(res->dattr->dev_cap_flags2);
977 sq->dbinfo.flags = 0;
978 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
979 CMDQ_BASE_OPCODE_CREATE_QP,
980 sizeof(req));
981
982 /* General */
983 req.type = qp->type;
984 req.dpi = cpu_to_le32(qp->dpi->dpi);
985 req.qp_handle = cpu_to_le64(qp->qp_handle);
986
987 /* SQ */
988 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
989 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(res->cctx) ?
990 sizeof(struct sq_psn_search_ext) :
991 sizeof(struct sq_psn_search);
992
993 if (qp->is_host_msn_tbl) {
994 psn_sz = sizeof(struct sq_msn_search);
995 qp->msn = 0;
996 }
997 }
998
999 hwq_attr.res = res;
1000 hwq_attr.sginfo = &sq->sg_info;
1001 hwq_attr.stride = sizeof(struct sq_sge);
1002 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, true);
1003 hwq_attr.aux_stride = psn_sz;
1004 hwq_attr.aux_depth = psn_sz ? bnxt_qplib_set_sq_size(sq, qp->wqe_mode)
1005 : 0;
1006 /* Update msn tbl size */
1007 if (qp->is_host_msn_tbl && psn_sz) {
1008 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
1009 hwq_attr.aux_depth =
1010 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1011 else
1012 hwq_attr.aux_depth =
1013 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)) / 2;
1014 qp->msn_tbl_sz = hwq_attr.aux_depth;
1015 qp->msn = 0;
1016 }
1017
1018 hwq_attr.type = HWQ_TYPE_QUEUE;
1019 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
1020 if (rc)
1021 return rc;
1022
1023 if (!sq->hwq.is_user) {
1024 rc = bnxt_qplib_alloc_init_swq(sq);
1025 if (rc)
1026 goto fail_sq;
1027
1028 if (psn_sz)
1029 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1030 }
1031 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1032 pbl = &sq->hwq.pbl[PBL_LVL_0];
1033 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1034 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1035 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1036 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1037 req.sq_pg_size_sq_lvl = pg_sz_lvl;
1038 req.sq_fwo_sq_sge =
1039 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1040 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1041 req.scq_cid = cpu_to_le32(qp->scq->id);
1042
1043 /* RQ */
1044 if (!qp->srq) {
1045 rq->dbinfo.flags = 0;
1046 hwq_attr.res = res;
1047 hwq_attr.sginfo = &rq->sg_info;
1048 hwq_attr.stride = sizeof(struct sq_sge);
1049 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
1050 hwq_attr.aux_stride = 0;
1051 hwq_attr.aux_depth = 0;
1052 hwq_attr.type = HWQ_TYPE_QUEUE;
1053 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1054 if (rc)
1055 goto sq_swq;
1056 if (!rq->hwq.is_user) {
1057 rc = bnxt_qplib_alloc_init_swq(rq);
1058 if (rc)
1059 goto fail_rq;
1060 }
1061
1062 req.rq_size = cpu_to_le32(rq->max_wqe);
1063 pbl = &rq->hwq.pbl[PBL_LVL_0];
1064 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1065 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1066 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1067 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1068 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1069 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1070 6 : rq->max_sge;
1071 req.rq_fwo_rq_sge =
1072 cpu_to_le16(((nsge &
1073 CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1074 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1075 } else {
1076 /* SRQ */
1077 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1078 req.srq_cid = cpu_to_le32(qp->srq->id);
1079 }
1080 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1081
1082 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1083 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1084 if (qp->sig_type)
1085 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1086 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1087 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1088 if (bnxt_ext_stats_supported(res->cctx, res->dattr->dev_cap_flags, res->is_vf))
1089 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1090
1091 req.qp_flags = cpu_to_le32(qp_flags);
1092
1093 /* ORRQ and IRRQ */
1094 if (psn_sz) {
1095 xrrq = &qp->orrq;
1096 xrrq->max_elements =
1097 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1098 req_size = xrrq->max_elements *
1099 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1100 req_size &= ~(PAGE_SIZE - 1);
1101 sginfo.pgsize = req_size;
1102 sginfo.pgshft = PAGE_SHIFT;
1103
1104 hwq_attr.res = res;
1105 hwq_attr.sginfo = &sginfo;
1106 hwq_attr.depth = xrrq->max_elements;
1107 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1108 hwq_attr.aux_stride = 0;
1109 hwq_attr.aux_depth = 0;
1110 hwq_attr.type = HWQ_TYPE_CTX;
1111 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1112 if (rc)
1113 goto rq_swq;
1114 pbl = &xrrq->pbl[PBL_LVL_0];
1115 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1116
1117 xrrq = &qp->irrq;
1118 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1119 qp->max_dest_rd_atomic);
1120 req_size = xrrq->max_elements *
1121 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1122 req_size &= ~(PAGE_SIZE - 1);
1123 sginfo.pgsize = req_size;
1124 hwq_attr.depth = xrrq->max_elements;
1125 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1126 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1127 if (rc)
1128 goto fail_orrq;
1129
1130 pbl = &xrrq->pbl[PBL_LVL_0];
1131 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1132 }
1133 req.pd_id = cpu_to_le32(qp->pd->id);
1134
1135 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1136 sizeof(resp), 0);
1137 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1138 if (rc)
1139 goto fail;
1140
1141 qp->id = le32_to_cpu(resp.xid);
1142 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1143 INIT_LIST_HEAD(&qp->sq_flush);
1144 INIT_LIST_HEAD(&qp->rq_flush);
1145 qp->cctx = res->cctx;
1146 sq->dbinfo.hwq = &sq->hwq;
1147 sq->dbinfo.xid = qp->id;
1148 sq->dbinfo.db = qp->dpi->dbr;
1149 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1150 if (rq->max_wqe) {
1151 rq->dbinfo.hwq = &rq->hwq;
1152 rq->dbinfo.xid = qp->id;
1153 rq->dbinfo.db = qp->dpi->dbr;
1154 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1155 }
1156 spin_lock_bh(&rcfw->tbl_lock);
1157 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1158 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1159 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
1160 spin_unlock_bh(&rcfw->tbl_lock);
1161
1162 return 0;
1163 fail:
1164 bnxt_qplib_free_hwq(res, &qp->irrq);
1165 fail_orrq:
1166 bnxt_qplib_free_hwq(res, &qp->orrq);
1167 rq_swq:
1168 kfree(rq->swq);
1169 fail_rq:
1170 bnxt_qplib_free_hwq(res, &rq->hwq);
1171 sq_swq:
1172 kfree(sq->swq);
1173 fail_sq:
1174 bnxt_qplib_free_hwq(res, &sq->hwq);
1175 return rc;
1176 }
1177
__modify_flags_from_init_state(struct bnxt_qplib_qp * qp)1178 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1179 {
1180 switch (qp->state) {
1181 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1182 /* INIT->RTR, configure the path_mtu to the default
1183 * 2048 if not being requested
1184 */
1185 if (!(qp->modify_flags &
1186 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1187 qp->modify_flags |=
1188 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1189 qp->path_mtu =
1190 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1191 }
1192 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1193 if (qp->max_dest_rd_atomic < 1)
1194 qp->max_dest_rd_atomic = 1;
1195 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1196 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1197 if (!(qp->modify_flags &
1198 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1199 qp->modify_flags |=
1200 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1201 qp->ah.sgid_index = 0;
1202 }
1203 break;
1204 default:
1205 break;
1206 }
1207 }
1208
__modify_flags_from_rtr_state(struct bnxt_qplib_qp * qp)1209 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1210 {
1211 switch (qp->state) {
1212 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1213 /* Bono FW requires the max_rd_atomic to be >= 1 */
1214 if (qp->max_rd_atomic < 1)
1215 qp->max_rd_atomic = 1;
1216 /* Bono FW does not allow PKEY_INDEX,
1217 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1218 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1219 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1220 * modification
1221 */
1222 qp->modify_flags &=
1223 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1224 CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1225 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1226 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1227 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1228 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1229 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1230 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1231 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1232 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1233 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1234 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1235 break;
1236 default:
1237 break;
1238 }
1239 }
1240
__filter_modify_flags(struct bnxt_qplib_qp * qp)1241 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1242 {
1243 switch (qp->cur_qp_state) {
1244 case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1245 break;
1246 case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1247 __modify_flags_from_init_state(qp);
1248 break;
1249 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1250 __modify_flags_from_rtr_state(qp);
1251 break;
1252 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1253 break;
1254 case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1255 break;
1256 case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1257 break;
1258 case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1259 break;
1260 default:
1261 break;
1262 }
1263 }
1264
bnxt_set_mandatory_attributes(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp,struct cmdq_modify_qp * req)1265 static void bnxt_set_mandatory_attributes(struct bnxt_qplib_res *res,
1266 struct bnxt_qplib_qp *qp,
1267 struct cmdq_modify_qp *req)
1268 {
1269 u32 mandatory_flags = 0;
1270
1271 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
1272 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS;
1273
1274 if (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1275 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) {
1276 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC && qp->srq)
1277 req->flags = cpu_to_le16(CMDQ_MODIFY_QP_FLAGS_SRQ_USED);
1278 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY;
1279 }
1280
1281 if (_is_min_rnr_in_rtr_rts_mandatory(res->dattr->dev_cap_flags2) &&
1282 (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
1283 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS)) {
1284 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
1285 mandatory_flags |=
1286 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER;
1287 }
1288
1289 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_UD ||
1290 qp->type == CMDQ_MODIFY_QP_QP_TYPE_GSI)
1291 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY;
1292
1293 qp->modify_flags |= mandatory_flags;
1294 req->qp_type = qp->type;
1295 }
1296
is_optimized_state_transition(struct bnxt_qplib_qp * qp)1297 static bool is_optimized_state_transition(struct bnxt_qplib_qp *qp)
1298 {
1299 if ((qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1300 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) ||
1301 (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
1302 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS))
1303 return true;
1304
1305 return false;
1306 }
1307
bnxt_qplib_modify_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1308 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1309 {
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 temp32[4];
1316 u32 bmask;
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 bmask = qp->modify_flags;
1332 req.modify_mask = cpu_to_le32(qp->modify_flags);
1333 req.qp_cid = cpu_to_le32(qp->id);
1334 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1335 req.network_type_en_sqd_async_notify_new_state =
1336 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1337 (qp->en_sqd_async_notify ?
1338 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1339 }
1340 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1341
1342 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1343 req.access = qp->access;
1344
1345 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1346 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1347
1348 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1349 req.qkey = cpu_to_le32(qp->qkey);
1350
1351 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1352 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1353 req.dgid[0] = cpu_to_le32(temp32[0]);
1354 req.dgid[1] = cpu_to_le32(temp32[1]);
1355 req.dgid[2] = cpu_to_le32(temp32[2]);
1356 req.dgid[3] = cpu_to_le32(temp32[3]);
1357 }
1358 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1359 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1360
1361 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1362 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1363 [qp->ah.sgid_index]);
1364
1365 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1366 req.hop_limit = qp->ah.hop_limit;
1367
1368 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1369 req.traffic_class = qp->ah.traffic_class;
1370
1371 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1372 memcpy(req.dest_mac, qp->ah.dmac, 6);
1373
1374 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1375 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1376
1377 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1378 req.timeout = qp->timeout;
1379
1380 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1381 req.retry_cnt = qp->retry_cnt;
1382
1383 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1384 req.rnr_retry = qp->rnr_retry;
1385
1386 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1387 req.min_rnr_timer = qp->min_rnr_timer;
1388
1389 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1390 req.rq_psn = cpu_to_le32(qp->rq.psn);
1391
1392 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1393 req.sq_psn = cpu_to_le32(qp->sq.psn);
1394
1395 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1396 req.max_rd_atomic =
1397 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1398
1399 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1400 req.max_dest_rd_atomic =
1401 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1402
1403 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1404 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1405 req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1406 req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1407 req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1408 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1409 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1410
1411 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID) {
1412 vlan_pcp_vlan_dei_vlan_id =
1413 ((res->sgid_tbl.tbl[qp->ah.sgid_index].vlan_id <<
1414 CMDQ_MODIFY_QP_VLAN_ID_SFT) &
1415 CMDQ_MODIFY_QP_VLAN_ID_MASK);
1416 vlan_pcp_vlan_dei_vlan_id |=
1417 ((qp->ah.sl << CMDQ_MODIFY_QP_VLAN_PCP_SFT) &
1418 CMDQ_MODIFY_QP_VLAN_PCP_MASK);
1419 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(vlan_pcp_vlan_dei_vlan_id);
1420 }
1421
1422 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
1423 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1424 if (rc)
1425 return rc;
1426 qp->cur_qp_state = qp->state;
1427 return 0;
1428 }
1429
bnxt_qplib_query_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1430 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1431 {
1432 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1433 struct creq_query_qp_resp resp = {};
1434 struct bnxt_qplib_cmdqmsg msg = {};
1435 struct bnxt_qplib_rcfw_sbuf sbuf;
1436 struct creq_query_qp_resp_sb *sb;
1437 struct cmdq_query_qp req = {};
1438 u32 temp32[4];
1439 int i, rc;
1440
1441 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
1442 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
1443 &sbuf.dma_addr, GFP_KERNEL);
1444 if (!sbuf.sb)
1445 return -ENOMEM;
1446 sb = sbuf.sb;
1447
1448 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1449 CMDQ_BASE_OPCODE_QUERY_QP,
1450 sizeof(req));
1451
1452 req.qp_cid = cpu_to_le32(qp->id);
1453 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
1454 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
1455 sizeof(resp), 0);
1456 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1457 if (rc)
1458 goto bail;
1459 /* Extract the context from the side buffer */
1460 qp->state = sb->en_sqd_async_notify_state &
1461 CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1462 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1463 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY;
1464 qp->access = sb->access;
1465 qp->pkey_index = le16_to_cpu(sb->pkey);
1466 qp->qkey = le32_to_cpu(sb->qkey);
1467
1468 temp32[0] = le32_to_cpu(sb->dgid[0]);
1469 temp32[1] = le32_to_cpu(sb->dgid[1]);
1470 temp32[2] = le32_to_cpu(sb->dgid[2]);
1471 temp32[3] = le32_to_cpu(sb->dgid[3]);
1472 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1473
1474 qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1475
1476 qp->ah.sgid_index = 0;
1477 for (i = 0; i < res->sgid_tbl.max; i++) {
1478 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1479 qp->ah.sgid_index = i;
1480 break;
1481 }
1482 }
1483 if (i == res->sgid_tbl.max)
1484 dev_warn(&res->pdev->dev, "SGID not found??\n");
1485
1486 qp->ah.hop_limit = sb->hop_limit;
1487 qp->ah.traffic_class = sb->traffic_class;
1488 memcpy(qp->ah.dmac, sb->dest_mac, 6);
1489 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1490 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1491 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1492 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1493 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1494 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1495 qp->timeout = sb->timeout;
1496 qp->retry_cnt = sb->retry_cnt;
1497 qp->rnr_retry = sb->rnr_retry;
1498 qp->min_rnr_timer = sb->min_rnr_timer;
1499 qp->rq.psn = le32_to_cpu(sb->rq_psn);
1500 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1501 qp->sq.psn = le32_to_cpu(sb->sq_psn);
1502 qp->max_dest_rd_atomic =
1503 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1504 qp->sq.max_wqe = qp->sq.hwq.max_elements;
1505 qp->rq.max_wqe = qp->rq.hwq.max_elements;
1506 qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1507 qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1508 qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1509 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1510 memcpy(qp->smac, sb->src_mac, 6);
1511 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1512 qp->port_id = le16_to_cpu(sb->port_id);
1513 bail:
1514 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
1515 sbuf.sb, sbuf.dma_addr);
1516 return rc;
1517 }
1518
__clean_cq(struct bnxt_qplib_cq * cq,u64 qp)1519 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1520 {
1521 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1522 u32 peek_flags, peek_cons;
1523 struct cq_base *hw_cqe;
1524 int i;
1525
1526 peek_flags = cq->dbinfo.flags;
1527 peek_cons = cq_hwq->cons;
1528 for (i = 0; i < cq_hwq->max_elements; i++) {
1529 hw_cqe = bnxt_qplib_get_qe(cq_hwq, peek_cons, NULL);
1530 if (!CQE_CMP_VALID(hw_cqe, peek_flags))
1531 continue;
1532 /*
1533 * The valid test of the entry must be done first before
1534 * reading any further.
1535 */
1536 dma_rmb();
1537 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1538 case CQ_BASE_CQE_TYPE_REQ:
1539 case CQ_BASE_CQE_TYPE_TERMINAL:
1540 {
1541 struct cq_req *cqe = (struct cq_req *)hw_cqe;
1542
1543 if (qp == le64_to_cpu(cqe->qp_handle))
1544 cqe->qp_handle = 0;
1545 break;
1546 }
1547 case CQ_BASE_CQE_TYPE_RES_RC:
1548 case CQ_BASE_CQE_TYPE_RES_UD:
1549 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1550 {
1551 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1552
1553 if (qp == le64_to_cpu(cqe->qp_handle))
1554 cqe->qp_handle = 0;
1555 break;
1556 }
1557 default:
1558 break;
1559 }
1560 bnxt_qplib_hwq_incr_cons(cq_hwq->max_elements, &peek_cons,
1561 1, &peek_flags);
1562 }
1563 }
1564
bnxt_qplib_destroy_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1565 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1566 struct bnxt_qplib_qp *qp)
1567 {
1568 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1569 struct creq_destroy_qp_resp resp = {};
1570 struct bnxt_qplib_cmdqmsg msg = {};
1571 struct cmdq_destroy_qp req = {};
1572 u32 tbl_indx;
1573 int rc;
1574
1575 spin_lock_bh(&rcfw->tbl_lock);
1576 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1577 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1578 rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1579 spin_unlock_bh(&rcfw->tbl_lock);
1580
1581 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1582 CMDQ_BASE_OPCODE_DESTROY_QP,
1583 sizeof(req));
1584
1585 req.qp_cid = cpu_to_le32(qp->id);
1586 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1587 sizeof(resp), 0);
1588 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1589 if (rc) {
1590 spin_lock_bh(&rcfw->tbl_lock);
1591 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1592 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1593 spin_unlock_bh(&rcfw->tbl_lock);
1594 return rc;
1595 }
1596
1597 return 0;
1598 }
1599
bnxt_qplib_free_qp_res(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1600 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1601 struct bnxt_qplib_qp *qp)
1602 {
1603 bnxt_qplib_free_qp_hdr_buf(res, qp);
1604 bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1605 kfree(qp->sq.swq);
1606
1607 bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1608 kfree(qp->rq.swq);
1609
1610 if (qp->irrq.max_elements)
1611 bnxt_qplib_free_hwq(res, &qp->irrq);
1612 if (qp->orrq.max_elements)
1613 bnxt_qplib_free_hwq(res, &qp->orrq);
1614
1615 }
1616
bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1617 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1618 struct bnxt_qplib_sge *sge)
1619 {
1620 struct bnxt_qplib_q *sq = &qp->sq;
1621 u32 sw_prod;
1622
1623 memset(sge, 0, sizeof(*sge));
1624
1625 if (qp->sq_hdr_buf) {
1626 sw_prod = sq->swq_start;
1627 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1628 sw_prod * qp->sq_hdr_buf_size);
1629 sge->lkey = 0xFFFFFFFF;
1630 sge->size = qp->sq_hdr_buf_size;
1631 return qp->sq_hdr_buf + sw_prod * sge->size;
1632 }
1633 return NULL;
1634 }
1635
bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp * qp)1636 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1637 {
1638 struct bnxt_qplib_q *rq = &qp->rq;
1639
1640 return rq->swq_start;
1641 }
1642
bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp * qp,u32 index)1643 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1644 {
1645 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1646 }
1647
bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1648 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1649 struct bnxt_qplib_sge *sge)
1650 {
1651 struct bnxt_qplib_q *rq = &qp->rq;
1652 u32 sw_prod;
1653
1654 memset(sge, 0, sizeof(*sge));
1655
1656 if (qp->rq_hdr_buf) {
1657 sw_prod = rq->swq_start;
1658 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1659 sw_prod * qp->rq_hdr_buf_size);
1660 sge->lkey = 0xFFFFFFFF;
1661 sge->size = qp->rq_hdr_buf_size;
1662 return qp->rq_hdr_buf + sw_prod * sge->size;
1663 }
1664 return NULL;
1665 }
1666
1667 /* 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)1668 static void bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp *qp,
1669 struct bnxt_qplib_swqe *wqe,
1670 struct bnxt_qplib_swq *swq)
1671 {
1672 struct sq_msn_search *msns;
1673 u32 start_psn, next_psn;
1674 u16 start_idx;
1675
1676 msns = (struct sq_msn_search *)swq->psn_search;
1677 msns->start_idx_next_psn_start_psn = 0;
1678
1679 start_psn = swq->start_psn;
1680 next_psn = swq->next_psn;
1681 start_idx = swq->slot_idx;
1682 msns->start_idx_next_psn_start_psn |=
1683 bnxt_re_update_msn_tbl(start_idx, next_psn, start_psn);
1684 qp->msn++;
1685 qp->msn %= qp->msn_tbl_sz;
1686 }
1687
bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1688 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1689 struct bnxt_qplib_swqe *wqe,
1690 struct bnxt_qplib_swq *swq)
1691 {
1692 struct sq_psn_search_ext *psns_ext;
1693 struct sq_psn_search *psns;
1694 u32 flg_npsn;
1695 u32 op_spsn;
1696
1697 if (!swq->psn_search)
1698 return;
1699 /* Handle MSN differently on cap flags */
1700 if (qp->is_host_msn_tbl) {
1701 bnxt_qplib_fill_msn_search(qp, wqe, swq);
1702 return;
1703 }
1704 psns = (struct sq_psn_search *)swq->psn_search;
1705 psns = swq->psn_search;
1706 psns_ext = swq->psn_ext;
1707
1708 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1709 SQ_PSN_SEARCH_START_PSN_MASK);
1710 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1711 SQ_PSN_SEARCH_OPCODE_MASK);
1712 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1713 SQ_PSN_SEARCH_NEXT_PSN_MASK);
1714
1715 if (bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
1716 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1717 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1718 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1719 } else {
1720 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1721 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1722 }
1723 }
1724
bnxt_qplib_put_inline(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u32 * idx)1725 static unsigned int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1726 struct bnxt_qplib_swqe *wqe,
1727 u32 *idx)
1728 {
1729 struct bnxt_qplib_hwq *hwq;
1730 int len, t_len, offt;
1731 bool pull_dst = true;
1732 void *il_dst = NULL;
1733 void *il_src = NULL;
1734 int t_cplen, cplen;
1735 int indx;
1736
1737 hwq = &qp->sq.hwq;
1738 t_len = 0;
1739 for (indx = 0; indx < wqe->num_sge; indx++) {
1740 len = wqe->sg_list[indx].size;
1741 il_src = (void *)wqe->sg_list[indx].addr;
1742 t_len += len;
1743 if (t_len > qp->max_inline_data)
1744 return BNXT_RE_INVAL_MSG_SIZE;
1745 while (len) {
1746 if (pull_dst) {
1747 pull_dst = false;
1748 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1749 (*idx)++;
1750 t_cplen = 0;
1751 offt = 0;
1752 }
1753 cplen = min_t(int, len, sizeof(struct sq_sge));
1754 cplen = min_t(int, cplen,
1755 (sizeof(struct sq_sge) - offt));
1756 memcpy(il_dst, il_src, cplen);
1757 t_cplen += cplen;
1758 il_src += cplen;
1759 il_dst += cplen;
1760 offt += cplen;
1761 len -= cplen;
1762 if (t_cplen == sizeof(struct sq_sge))
1763 pull_dst = true;
1764 }
1765 }
1766
1767 return t_len;
1768 }
1769
bnxt_qplib_put_sges(struct bnxt_qplib_hwq * hwq,struct bnxt_qplib_sge * ssge,u32 nsge,u32 * idx)1770 static unsigned int bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1771 struct bnxt_qplib_sge *ssge,
1772 u32 nsge, u32 *idx)
1773 {
1774 struct sq_sge *dsge;
1775 int indx, len = 0;
1776
1777 for (indx = 0; indx < nsge; indx++, (*idx)++) {
1778 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1779 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1780 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1781 dsge->size = cpu_to_le32(ssge[indx].size);
1782 len += ssge[indx].size;
1783 }
1784
1785 return len;
1786 }
1787
bnxt_qplib_required_slots(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * wqe_sz,u16 * qdf,u8 mode)1788 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1789 struct bnxt_qplib_swqe *wqe,
1790 u16 *wqe_sz, u16 *qdf, u8 mode)
1791 {
1792 u32 ilsize, bytes;
1793 u16 nsge;
1794 u16 slot;
1795
1796 nsge = wqe->num_sge;
1797 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1798 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1799 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1800 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1801 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1802 bytes += sizeof(struct sq_send_hdr);
1803 }
1804
1805 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes);
1806 slot = bytes >> 4;
1807 *wqe_sz = slot;
1808 if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1809 slot = 8;
1810 return slot;
1811 }
1812
bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp * qp,struct bnxt_qplib_q * sq,struct bnxt_qplib_swq * swq,bool hw_retx)1813 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp *qp, struct bnxt_qplib_q *sq,
1814 struct bnxt_qplib_swq *swq, bool hw_retx)
1815 {
1816 struct bnxt_qplib_hwq *hwq;
1817 u32 pg_num, pg_indx;
1818 void *buff;
1819 u32 tail;
1820
1821 hwq = &sq->hwq;
1822 if (!hwq->pad_pg)
1823 return;
1824 tail = swq->slot_idx / sq->dbinfo.max_slot;
1825 if (hw_retx) {
1826 /* For HW retx use qp msn index */
1827 tail = qp->msn;
1828 tail %= qp->msn_tbl_sz;
1829 }
1830 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1831 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1832 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1833 swq->psn_ext = buff;
1834 swq->psn_search = buff;
1835 }
1836
bnxt_qplib_post_send_db(struct bnxt_qplib_qp * qp)1837 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1838 {
1839 struct bnxt_qplib_q *sq = &qp->sq;
1840
1841 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1842 }
1843
bnxt_qplib_post_send(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)1844 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1845 struct bnxt_qplib_swqe *wqe)
1846 {
1847 struct bnxt_qplib_nq_work *nq_work = NULL;
1848 int i, rc = 0, data_len = 0, pkt_num = 0;
1849 struct bnxt_qplib_q *sq = &qp->sq;
1850 struct bnxt_qplib_hwq *hwq;
1851 struct bnxt_qplib_swq *swq;
1852 bool sch_handler = false;
1853 u32 wqe_idx, slots, idx;
1854 u16 wqe_sz, qdf = 0;
1855 bool msn_update;
1856 void *base_hdr;
1857 void *ext_hdr;
1858 __le32 temp32;
1859
1860 hwq = &sq->hwq;
1861 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1862 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1863 dev_err(&hwq->pdev->dev,
1864 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1865 qp->id, qp->state);
1866 rc = -EINVAL;
1867 goto done;
1868 }
1869
1870 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1871 if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1872 dev_err(&hwq->pdev->dev,
1873 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1874 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1875 rc = -ENOMEM;
1876 goto done;
1877 }
1878
1879 swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1880 bnxt_qplib_pull_psn_buff(qp, sq, swq, qp->is_host_msn_tbl);
1881
1882 idx = 0;
1883 swq->slot_idx = hwq->prod;
1884 swq->slots = slots;
1885 swq->wr_id = wqe->wr_id;
1886 swq->type = wqe->type;
1887 swq->flags = wqe->flags;
1888 swq->start_psn = sq->psn & BTH_PSN_MASK;
1889 if (qp->sig_type)
1890 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1891
1892 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1893 sch_handler = true;
1894 dev_dbg(&hwq->pdev->dev,
1895 "%s Error QP. Scheduling for poll_cq\n", __func__);
1896 goto queue_err;
1897 }
1898
1899 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1900 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1901 memset(base_hdr, 0, sizeof(struct sq_sge));
1902 memset(ext_hdr, 0, sizeof(struct sq_sge));
1903
1904 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1905 /* Copy the inline data */
1906 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1907 else
1908 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1909 &idx);
1910 if (data_len > BNXT_RE_MAX_MSG_SIZE) {
1911 rc = -EINVAL;
1912 goto done;
1913 }
1914 /* Make sure we update MSN table only for wired wqes */
1915 msn_update = true;
1916 /* Specifics */
1917 switch (wqe->type) {
1918 case BNXT_QPLIB_SWQE_TYPE_SEND:
1919 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1920 struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1921 struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1922 /* Assemble info for Raw Ethertype QPs */
1923
1924 sqe->wqe_type = wqe->type;
1925 sqe->flags = wqe->flags;
1926 sqe->wqe_size = wqe_sz;
1927 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1928 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1929 sqe->length = cpu_to_le32(data_len);
1930 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1931 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1932 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1933
1934 break;
1935 }
1936 fallthrough;
1937 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1938 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1939 {
1940 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1941 struct sq_send_hdr *sqe = base_hdr;
1942
1943 sqe->wqe_type = wqe->type;
1944 sqe->flags = wqe->flags;
1945 sqe->wqe_size = wqe_sz;
1946 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1947 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1948 qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1949 sqe->q_key = cpu_to_le32(wqe->send.q_key);
1950 sqe->length = cpu_to_le32(data_len);
1951 sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1952 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1953 SQ_SEND_DST_QP_MASK);
1954 ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1955 SQ_SEND_AVID_MASK);
1956 msn_update = false;
1957 } else {
1958 sqe->length = cpu_to_le32(data_len);
1959 if (qp->mtu)
1960 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1961 if (!pkt_num)
1962 pkt_num = 1;
1963 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1964 }
1965 break;
1966 }
1967 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1968 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1969 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1970 {
1971 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1972 struct sq_rdma_hdr *sqe = base_hdr;
1973
1974 sqe->wqe_type = wqe->type;
1975 sqe->flags = wqe->flags;
1976 sqe->wqe_size = wqe_sz;
1977 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1978 sqe->length = cpu_to_le32((u32)data_len);
1979 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1980 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1981 if (qp->mtu)
1982 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1983 if (!pkt_num)
1984 pkt_num = 1;
1985 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1986 break;
1987 }
1988 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
1989 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
1990 {
1991 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
1992 struct sq_atomic_hdr *sqe = base_hdr;
1993
1994 sqe->wqe_type = wqe->type;
1995 sqe->flags = wqe->flags;
1996 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
1997 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
1998 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
1999 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
2000 if (qp->mtu)
2001 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
2002 if (!pkt_num)
2003 pkt_num = 1;
2004 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
2005 break;
2006 }
2007 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
2008 {
2009 struct sq_localinvalidate *sqe = base_hdr;
2010
2011 sqe->wqe_type = wqe->type;
2012 sqe->flags = wqe->flags;
2013 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
2014 msn_update = false;
2015 break;
2016 }
2017 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
2018 {
2019 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
2020 struct sq_fr_pmr_hdr *sqe = base_hdr;
2021
2022 sqe->wqe_type = wqe->type;
2023 sqe->flags = wqe->flags;
2024 sqe->access_cntl = wqe->frmr.access_cntl |
2025 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
2026 sqe->zero_based_page_size_log =
2027 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
2028 SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
2029 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
2030 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
2031 temp32 = cpu_to_le32(wqe->frmr.length);
2032 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
2033 sqe->numlevels_pbl_page_size_log =
2034 ((wqe->frmr.pbl_pg_sz_log <<
2035 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
2036 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
2037 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
2038 SQ_FR_PMR_NUMLEVELS_MASK);
2039
2040 for (i = 0; i < wqe->frmr.page_list_len; i++)
2041 wqe->frmr.pbl_ptr[i] = cpu_to_le64(
2042 wqe->frmr.page_list[i] |
2043 PTU_PTE_VALID);
2044 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
2045 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
2046 msn_update = false;
2047
2048 break;
2049 }
2050 case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
2051 {
2052 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
2053 struct sq_bind_hdr *sqe = base_hdr;
2054
2055 sqe->wqe_type = wqe->type;
2056 sqe->flags = wqe->flags;
2057 sqe->access_cntl = wqe->bind.access_cntl;
2058 sqe->mw_type_zero_based = wqe->bind.mw_type |
2059 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
2060 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
2061 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
2062 ext_sqe->va = cpu_to_le64(wqe->bind.va);
2063 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
2064 msn_update = false;
2065 break;
2066 }
2067 default:
2068 /* Bad wqe, return error */
2069 rc = -EINVAL;
2070 goto done;
2071 }
2072 if (!qp->is_host_msn_tbl || msn_update) {
2073 swq->next_psn = sq->psn & BTH_PSN_MASK;
2074 bnxt_qplib_fill_psn_search(qp, wqe, swq);
2075 }
2076 queue_err:
2077 bnxt_qplib_swq_mod_start(sq, wqe_idx);
2078 bnxt_qplib_hwq_incr_prod(&sq->dbinfo, hwq, swq->slots);
2079 qp->wqe_cnt++;
2080 done:
2081 if (sch_handler) {
2082 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2083 if (nq_work) {
2084 nq_work->cq = qp->scq;
2085 nq_work->nq = qp->scq->nq;
2086 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2087 queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
2088 } else {
2089 dev_err(&hwq->pdev->dev,
2090 "FP: Failed to allocate SQ nq_work!\n");
2091 rc = -ENOMEM;
2092 }
2093 }
2094 return rc;
2095 }
2096
bnxt_qplib_post_recv_db(struct bnxt_qplib_qp * qp)2097 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
2098 {
2099 struct bnxt_qplib_q *rq = &qp->rq;
2100
2101 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
2102 }
2103
bnxt_qplib_post_recv(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)2104 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
2105 struct bnxt_qplib_swqe *wqe)
2106 {
2107 struct bnxt_qplib_nq_work *nq_work = NULL;
2108 struct bnxt_qplib_q *rq = &qp->rq;
2109 struct rq_wqe_hdr *base_hdr;
2110 struct rq_ext_hdr *ext_hdr;
2111 struct bnxt_qplib_hwq *hwq;
2112 struct bnxt_qplib_swq *swq;
2113 bool sch_handler = false;
2114 u32 wqe_idx, idx;
2115 u16 wqe_sz;
2116 int rc = 0;
2117
2118 hwq = &rq->hwq;
2119 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
2120 dev_err(&hwq->pdev->dev,
2121 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
2122 qp->id, qp->state);
2123 rc = -EINVAL;
2124 goto done;
2125 }
2126
2127 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
2128 dev_err(&hwq->pdev->dev,
2129 "FP: QP (0x%x) RQ is full!\n", qp->id);
2130 rc = -EINVAL;
2131 goto done;
2132 }
2133
2134 swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
2135 swq->wr_id = wqe->wr_id;
2136 swq->slots = rq->dbinfo.max_slot;
2137
2138 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2139 sch_handler = true;
2140 dev_dbg(&hwq->pdev->dev,
2141 "%s: Error QP. Scheduling for poll_cq\n", __func__);
2142 goto queue_err;
2143 }
2144
2145 idx = 0;
2146 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2147 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2148 memset(base_hdr, 0, sizeof(struct sq_sge));
2149 memset(ext_hdr, 0, sizeof(struct sq_sge));
2150 wqe_sz = (sizeof(struct rq_wqe_hdr) +
2151 wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2152 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2153 if (!wqe->num_sge) {
2154 struct sq_sge *sge;
2155
2156 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2157 sge->size = 0;
2158 wqe_sz++;
2159 }
2160 base_hdr->wqe_type = wqe->type;
2161 base_hdr->flags = wqe->flags;
2162 base_hdr->wqe_size = wqe_sz;
2163 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2164 queue_err:
2165 bnxt_qplib_swq_mod_start(rq, wqe_idx);
2166 bnxt_qplib_hwq_incr_prod(&rq->dbinfo, hwq, swq->slots);
2167 done:
2168 if (sch_handler) {
2169 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2170 if (nq_work) {
2171 nq_work->cq = qp->rcq;
2172 nq_work->nq = qp->rcq->nq;
2173 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2174 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2175 } else {
2176 dev_err(&hwq->pdev->dev,
2177 "FP: Failed to allocate RQ nq_work!\n");
2178 rc = -ENOMEM;
2179 }
2180 }
2181
2182 return rc;
2183 }
2184
2185 /* CQ */
bnxt_qplib_create_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2186 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2187 {
2188 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2189 struct bnxt_qplib_hwq_attr hwq_attr = {};
2190 struct creq_create_cq_resp resp = {};
2191 struct bnxt_qplib_cmdqmsg msg = {};
2192 struct cmdq_create_cq req = {};
2193 struct bnxt_qplib_pbl *pbl;
2194 u32 coalescing = 0;
2195 u32 pg_sz_lvl;
2196 int rc;
2197
2198 if (!cq->dpi) {
2199 dev_err(&rcfw->pdev->dev,
2200 "FP: CREATE_CQ failed due to NULL DPI\n");
2201 return -EINVAL;
2202 }
2203
2204 cq->dbinfo.flags = 0;
2205 hwq_attr.res = res;
2206 hwq_attr.depth = cq->max_wqe;
2207 hwq_attr.stride = sizeof(struct cq_base);
2208 hwq_attr.type = HWQ_TYPE_QUEUE;
2209 hwq_attr.sginfo = &cq->sg_info;
2210 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2211 if (rc)
2212 return rc;
2213
2214 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2215 CMDQ_BASE_OPCODE_CREATE_CQ,
2216 sizeof(req));
2217
2218 req.dpi = cpu_to_le32(cq->dpi->dpi);
2219 req.cq_handle = cpu_to_le64(cq->cq_handle);
2220 req.cq_size = cpu_to_le32(cq->max_wqe);
2221
2222 if (_is_cq_coalescing_supported(res->dattr->dev_cap_flags2)) {
2223 req.flags |= cpu_to_le16(CMDQ_CREATE_CQ_FLAGS_COALESCING_VALID);
2224 coalescing |= ((cq->coalescing->buf_maxtime <<
2225 CMDQ_CREATE_CQ_BUF_MAXTIME_SFT) &
2226 CMDQ_CREATE_CQ_BUF_MAXTIME_MASK);
2227 coalescing |= ((cq->coalescing->normal_maxbuf <<
2228 CMDQ_CREATE_CQ_NORMAL_MAXBUF_SFT) &
2229 CMDQ_CREATE_CQ_NORMAL_MAXBUF_MASK);
2230 coalescing |= ((cq->coalescing->during_maxbuf <<
2231 CMDQ_CREATE_CQ_DURING_MAXBUF_SFT) &
2232 CMDQ_CREATE_CQ_DURING_MAXBUF_MASK);
2233 if (cq->coalescing->en_ring_idle_mode)
2234 coalescing |= CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2235 else
2236 coalescing &= ~CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2237 req.coalescing = cpu_to_le32(coalescing);
2238 }
2239
2240 pbl = &cq->hwq.pbl[PBL_LVL_0];
2241 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2242 CMDQ_CREATE_CQ_PG_SIZE_SFT);
2243 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2244 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2245 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2246 req.cq_fco_cnq_id = cpu_to_le32(
2247 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2248 CMDQ_CREATE_CQ_CNQ_ID_SFT);
2249 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2250 sizeof(resp), 0);
2251 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2252 if (rc)
2253 goto fail;
2254
2255 cq->id = le32_to_cpu(resp.xid);
2256 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2257 init_waitqueue_head(&cq->waitq);
2258 INIT_LIST_HEAD(&cq->sqf_head);
2259 INIT_LIST_HEAD(&cq->rqf_head);
2260 spin_lock_init(&cq->compl_lock);
2261 spin_lock_init(&cq->flush_lock);
2262
2263 cq->dbinfo.hwq = &cq->hwq;
2264 cq->dbinfo.xid = cq->id;
2265 cq->dbinfo.db = cq->dpi->dbr;
2266 cq->dbinfo.priv_db = res->dpi_tbl.priv_db;
2267 cq->dbinfo.flags = 0;
2268 cq->dbinfo.toggle = 0;
2269
2270 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2271
2272 return 0;
2273
2274 fail:
2275 bnxt_qplib_free_hwq(res, &cq->hwq);
2276 return rc;
2277 }
2278
bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2279 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2280 struct bnxt_qplib_cq *cq)
2281 {
2282 bnxt_qplib_free_hwq(res, &cq->hwq);
2283 memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2284 /* Reset only the cons bit in the flags */
2285 cq->dbinfo.flags &= ~(1UL << BNXT_QPLIB_FLAG_EPOCH_CONS_SHIFT);
2286 }
2287
bnxt_qplib_resize_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq,int new_cqes)2288 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2289 int new_cqes)
2290 {
2291 struct bnxt_qplib_hwq_attr hwq_attr = {};
2292 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2293 struct creq_resize_cq_resp resp = {};
2294 struct bnxt_qplib_cmdqmsg msg = {};
2295 struct cmdq_resize_cq req = {};
2296 struct bnxt_qplib_pbl *pbl;
2297 u32 pg_sz, lvl, new_sz;
2298 int rc;
2299
2300 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2301 CMDQ_BASE_OPCODE_RESIZE_CQ,
2302 sizeof(req));
2303 hwq_attr.sginfo = &cq->sg_info;
2304 hwq_attr.res = res;
2305 hwq_attr.depth = new_cqes;
2306 hwq_attr.stride = sizeof(struct cq_base);
2307 hwq_attr.type = HWQ_TYPE_QUEUE;
2308 rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2309 if (rc)
2310 return rc;
2311
2312 req.cq_cid = cpu_to_le32(cq->id);
2313 pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2314 pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2315 lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2316 CMDQ_RESIZE_CQ_LVL_MASK;
2317 new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2318 CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2319 req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2320 req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2321
2322 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2323 sizeof(resp), 0);
2324 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2325 return rc;
2326 }
2327
bnxt_qplib_destroy_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2328 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2329 {
2330 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2331 struct creq_destroy_cq_resp resp = {};
2332 struct bnxt_qplib_cmdqmsg msg = {};
2333 struct cmdq_destroy_cq req = {};
2334 u16 total_cnq_events;
2335 int rc;
2336
2337 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2338 CMDQ_BASE_OPCODE_DESTROY_CQ,
2339 sizeof(req));
2340
2341 req.cq_cid = cpu_to_le32(cq->id);
2342 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2343 sizeof(resp), 0);
2344 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2345 if (rc)
2346 return rc;
2347 total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2348 __wait_for_all_nqes(cq, total_cnq_events);
2349 bnxt_qplib_free_hwq(res, &cq->hwq);
2350 return 0;
2351 }
2352
__flush_sq(struct bnxt_qplib_q * sq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2353 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2354 struct bnxt_qplib_cqe **pcqe, int *budget)
2355 {
2356 struct bnxt_qplib_cqe *cqe;
2357 u32 start, last;
2358 int rc = 0;
2359
2360 /* Now complete all outstanding SQEs with FLUSHED_ERR */
2361 start = sq->swq_start;
2362 cqe = *pcqe;
2363 while (*budget) {
2364 last = sq->swq_last;
2365 if (start == last)
2366 break;
2367 /* Skip the FENCE WQE completions */
2368 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2369 bnxt_qplib_cancel_phantom_processing(qp);
2370 goto skip_compl;
2371 }
2372 memset(cqe, 0, sizeof(*cqe));
2373 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2374 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2375 cqe->qp_handle = (u64)(unsigned long)qp;
2376 cqe->wr_id = sq->swq[last].wr_id;
2377 cqe->src_qp = qp->id;
2378 cqe->type = sq->swq[last].type;
2379 cqe++;
2380 (*budget)--;
2381 skip_compl:
2382 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2383 sq->swq[last].slots, &sq->dbinfo.flags);
2384 sq->swq_last = sq->swq[last].next_idx;
2385 }
2386 *pcqe = cqe;
2387 if (!(*budget) && sq->swq_last != start)
2388 /* Out of budget */
2389 rc = -EAGAIN;
2390
2391 return rc;
2392 }
2393
__flush_rq(struct bnxt_qplib_q * rq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2394 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2395 struct bnxt_qplib_cqe **pcqe, int *budget)
2396 {
2397 struct bnxt_qplib_cqe *cqe;
2398 u32 start, last;
2399 int opcode = 0;
2400 int rc = 0;
2401
2402 switch (qp->type) {
2403 case CMDQ_CREATE_QP1_TYPE_GSI:
2404 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2405 break;
2406 case CMDQ_CREATE_QP_TYPE_RC:
2407 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2408 break;
2409 case CMDQ_CREATE_QP_TYPE_UD:
2410 case CMDQ_CREATE_QP_TYPE_GSI:
2411 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2412 break;
2413 }
2414
2415 /* Flush the rest of the RQ */
2416 start = rq->swq_start;
2417 cqe = *pcqe;
2418 while (*budget) {
2419 last = rq->swq_last;
2420 if (last == start)
2421 break;
2422 memset(cqe, 0, sizeof(*cqe));
2423 cqe->status =
2424 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2425 cqe->opcode = opcode;
2426 cqe->qp_handle = (unsigned long)qp;
2427 cqe->wr_id = rq->swq[last].wr_id;
2428 cqe++;
2429 (*budget)--;
2430 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2431 rq->swq[last].slots, &rq->dbinfo.flags);
2432 rq->swq_last = rq->swq[last].next_idx;
2433 }
2434 *pcqe = cqe;
2435 if (!*budget && rq->swq_last != start)
2436 /* Out of budget */
2437 rc = -EAGAIN;
2438
2439 return rc;
2440 }
2441
bnxt_qplib_mark_qp_error(void * qp_handle)2442 void bnxt_qplib_mark_qp_error(void *qp_handle)
2443 {
2444 struct bnxt_qplib_qp *qp = qp_handle;
2445
2446 if (!qp)
2447 return;
2448
2449 /* Must block new posting of SQ and RQ */
2450 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2451 bnxt_qplib_cancel_phantom_processing(qp);
2452 }
2453
2454 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2455 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2456 */
do_wa9060(struct bnxt_qplib_qp * qp,struct bnxt_qplib_cq * cq,u32 cq_cons,u32 swq_last,u32 cqe_sq_cons)2457 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2458 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2459 {
2460 u32 peek_sw_cq_cons, peek_sq_cons_idx, peek_flags;
2461 struct bnxt_qplib_q *sq = &qp->sq;
2462 struct cq_req *peek_req_hwcqe;
2463 struct bnxt_qplib_qp *peek_qp;
2464 struct bnxt_qplib_q *peek_sq;
2465 struct bnxt_qplib_swq *swq;
2466 struct cq_base *peek_hwcqe;
2467 int i, rc = 0;
2468
2469 /* Normal mode */
2470 /* Check for the psn_search marking before completing */
2471 swq = &sq->swq[swq_last];
2472 if (swq->psn_search &&
2473 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2474 /* Unmark */
2475 swq->psn_search->flags_next_psn = cpu_to_le32
2476 (le32_to_cpu(swq->psn_search->flags_next_psn)
2477 & ~0x80000000);
2478 dev_dbg(&cq->hwq.pdev->dev,
2479 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2480 cq_cons, qp->id, swq_last, cqe_sq_cons);
2481 sq->condition = true;
2482 sq->send_phantom = true;
2483
2484 /* TODO: Only ARM if the previous SQE is ARMALL */
2485 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2486 rc = -EAGAIN;
2487 goto out;
2488 }
2489 if (sq->condition) {
2490 /* Peek at the completions */
2491 peek_flags = cq->dbinfo.flags;
2492 peek_sw_cq_cons = cq_cons;
2493 i = cq->hwq.max_elements;
2494 while (i--) {
2495 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2496 peek_sw_cq_cons, NULL);
2497 /* If the next hwcqe is VALID */
2498 if (CQE_CMP_VALID(peek_hwcqe, peek_flags)) {
2499 /*
2500 * The valid test of the entry must be done first before
2501 * reading any further.
2502 */
2503 dma_rmb();
2504 /* If the next hwcqe is a REQ */
2505 if ((peek_hwcqe->cqe_type_toggle &
2506 CQ_BASE_CQE_TYPE_MASK) ==
2507 CQ_BASE_CQE_TYPE_REQ) {
2508 peek_req_hwcqe = (struct cq_req *)
2509 peek_hwcqe;
2510 peek_qp = (struct bnxt_qplib_qp *)
2511 ((unsigned long)
2512 le64_to_cpu
2513 (peek_req_hwcqe->qp_handle));
2514 peek_sq = &peek_qp->sq;
2515 peek_sq_cons_idx =
2516 ((le16_to_cpu(
2517 peek_req_hwcqe->sq_cons_idx)
2518 - 1) % sq->max_wqe);
2519 /* If the hwcqe's sq's wr_id matches */
2520 if (peek_sq == sq &&
2521 sq->swq[peek_sq_cons_idx].wr_id ==
2522 BNXT_QPLIB_FENCE_WRID) {
2523 /*
2524 * Unbreak only if the phantom
2525 * comes back
2526 */
2527 dev_dbg(&cq->hwq.pdev->dev,
2528 "FP: Got Phantom CQE\n");
2529 sq->condition = false;
2530 sq->single = true;
2531 rc = 0;
2532 goto out;
2533 }
2534 }
2535 /* Valid but not the phantom, so keep looping */
2536 } else {
2537 /* Not valid yet, just exit and wait */
2538 rc = -EINVAL;
2539 goto out;
2540 }
2541 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements,
2542 &peek_sw_cq_cons,
2543 1, &peek_flags);
2544 }
2545 dev_err(&cq->hwq.pdev->dev,
2546 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2547 cq_cons, qp->id, swq_last, cqe_sq_cons);
2548 rc = -EINVAL;
2549 }
2550 out:
2551 return rc;
2552 }
2553
bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q * sq,u32 cqe_slot)2554 static int bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q *sq, u32 cqe_slot)
2555 {
2556 struct bnxt_qplib_hwq *sq_hwq;
2557 struct bnxt_qplib_swq *swq;
2558 int cqe_sq_cons = -1;
2559 u32 start, last;
2560
2561 sq_hwq = &sq->hwq;
2562
2563 start = sq->swq_start;
2564 last = sq->swq_last;
2565
2566 while (last != start) {
2567 swq = &sq->swq[last];
2568 if (swq->slot_idx == cqe_slot) {
2569 cqe_sq_cons = swq->next_idx;
2570 dev_err(&sq_hwq->pdev->dev, "%s: Found cons wqe = %d slot = %d\n",
2571 __func__, cqe_sq_cons, cqe_slot);
2572 break;
2573 }
2574
2575 last = swq->next_idx;
2576 }
2577 return cqe_sq_cons;
2578 }
2579
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)2580 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2581 struct cq_req *hwcqe,
2582 struct bnxt_qplib_cqe **pcqe, int *budget,
2583 u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2584 {
2585 struct bnxt_qplib_swq *swq;
2586 struct bnxt_qplib_cqe *cqe;
2587 u32 cqe_sq_cons, slot_num;
2588 struct bnxt_qplib_qp *qp;
2589 struct bnxt_qplib_q *sq;
2590 int cqe_cons;
2591 int rc = 0;
2592
2593 qp = (struct bnxt_qplib_qp *)((unsigned long)
2594 le64_to_cpu(hwcqe->qp_handle));
2595 if (!qp) {
2596 dev_err(&cq->hwq.pdev->dev,
2597 "FP: Process Req qp is NULL\n");
2598 return -EINVAL;
2599 }
2600 sq = &qp->sq;
2601
2602 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_sw_wqe;
2603 if (qp->sq.flushed) {
2604 dev_dbg(&cq->hwq.pdev->dev,
2605 "%s: QP in Flush QP = %p\n", __func__, qp);
2606 goto done;
2607 }
2608
2609 if (__is_err_cqe_for_var_wqe(qp, hwcqe->status)) {
2610 slot_num = le16_to_cpu(hwcqe->sq_cons_idx);
2611 cqe_cons = bnxt_qplib_get_cqe_sq_cons(sq, slot_num);
2612 if (cqe_cons < 0) {
2613 dev_err(&cq->hwq.pdev->dev, "%s: Wrong SQ cons cqe_slot_indx = %d\n",
2614 __func__, slot_num);
2615 goto done;
2616 }
2617 cqe_sq_cons = cqe_cons;
2618 dev_err(&cq->hwq.pdev->dev, "%s: cqe_sq_cons = %d swq_last = %d swq_start = %d\n",
2619 __func__, cqe_sq_cons, sq->swq_last, sq->swq_start);
2620 }
2621
2622 /* Require to walk the sq's swq to fabricate CQEs for all previously
2623 * signaled SWQEs due to CQE aggregation from the current sq cons
2624 * to the cqe_sq_cons
2625 */
2626 cqe = *pcqe;
2627 while (*budget) {
2628 if (sq->swq_last == cqe_sq_cons)
2629 /* Done */
2630 break;
2631
2632 swq = &sq->swq[sq->swq_last];
2633 memset(cqe, 0, sizeof(*cqe));
2634 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2635 cqe->qp_handle = (u64)(unsigned long)qp;
2636 cqe->src_qp = qp->id;
2637 cqe->wr_id = swq->wr_id;
2638 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2639 goto skip;
2640 cqe->type = swq->type;
2641
2642 /* For the last CQE, check for status. For errors, regardless
2643 * of the request being signaled or not, it must complete with
2644 * the hwcqe error status
2645 */
2646 if (swq->next_idx == cqe_sq_cons &&
2647 hwcqe->status != CQ_REQ_STATUS_OK) {
2648 cqe->status = hwcqe->status;
2649 dev_err(&cq->hwq.pdev->dev,
2650 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2651 sq->swq_last, cqe->wr_id, cqe->status);
2652 cqe++;
2653 (*budget)--;
2654 bnxt_qplib_mark_qp_error(qp);
2655 /* Add qp to flush list of the CQ */
2656 bnxt_qplib_add_flush_qp(qp);
2657 } else {
2658 /* Before we complete, do WA 9060 */
2659 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
2660 if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2661 cqe_sq_cons)) {
2662 *lib_qp = qp;
2663 goto out;
2664 }
2665 }
2666 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2667 cqe->status = CQ_REQ_STATUS_OK;
2668 cqe++;
2669 (*budget)--;
2670 }
2671 }
2672 skip:
2673 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2674 swq->slots, &sq->dbinfo.flags);
2675 sq->swq_last = swq->next_idx;
2676 if (sq->single)
2677 break;
2678 }
2679 out:
2680 *pcqe = cqe;
2681 if (sq->swq_last != cqe_sq_cons) {
2682 /* Out of budget */
2683 rc = -EAGAIN;
2684 goto done;
2685 }
2686 /*
2687 * Back to normal completion mode only after it has completed all of
2688 * the WC for this CQE
2689 */
2690 sq->single = false;
2691 done:
2692 return rc;
2693 }
2694
bnxt_qplib_release_srqe(struct bnxt_qplib_srq * srq,u32 tag)2695 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2696 {
2697 spin_lock(&srq->hwq.lock);
2698 srq->swq[srq->last_idx].next_idx = (int)tag;
2699 srq->last_idx = (int)tag;
2700 srq->swq[srq->last_idx].next_idx = -1;
2701 bnxt_qplib_hwq_incr_cons(srq->hwq.max_elements, &srq->hwq.cons,
2702 srq->dbinfo.max_slot, &srq->dbinfo.flags);
2703 spin_unlock(&srq->hwq.lock);
2704 }
2705
bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq * cq,struct cq_res_rc * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2706 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2707 struct cq_res_rc *hwcqe,
2708 struct bnxt_qplib_cqe **pcqe,
2709 int *budget)
2710 {
2711 struct bnxt_qplib_srq *srq;
2712 struct bnxt_qplib_cqe *cqe;
2713 struct bnxt_qplib_qp *qp;
2714 struct bnxt_qplib_q *rq;
2715 u32 wr_id_idx;
2716
2717 qp = (struct bnxt_qplib_qp *)((unsigned long)
2718 le64_to_cpu(hwcqe->qp_handle));
2719 if (!qp) {
2720 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2721 return -EINVAL;
2722 }
2723 if (qp->rq.flushed) {
2724 dev_dbg(&cq->hwq.pdev->dev,
2725 "%s: QP in Flush QP = %p\n", __func__, qp);
2726 return 0;
2727 }
2728
2729 cqe = *pcqe;
2730 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2731 cqe->length = le32_to_cpu(hwcqe->length);
2732 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2733 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2734 cqe->flags = le16_to_cpu(hwcqe->flags);
2735 cqe->status = hwcqe->status;
2736 cqe->qp_handle = (u64)(unsigned long)qp;
2737
2738 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2739 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2740 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2741 srq = qp->srq;
2742 if (!srq)
2743 return -EINVAL;
2744 if (wr_id_idx >= srq->hwq.max_elements) {
2745 dev_err(&cq->hwq.pdev->dev,
2746 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2747 wr_id_idx, srq->hwq.max_elements);
2748 return -EINVAL;
2749 }
2750 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2751 bnxt_qplib_release_srqe(srq, wr_id_idx);
2752 cqe++;
2753 (*budget)--;
2754 *pcqe = cqe;
2755 } else {
2756 struct bnxt_qplib_swq *swq;
2757
2758 rq = &qp->rq;
2759 if (wr_id_idx > (rq->max_wqe - 1)) {
2760 dev_err(&cq->hwq.pdev->dev,
2761 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2762 wr_id_idx, rq->max_wqe);
2763 return -EINVAL;
2764 }
2765 if (wr_id_idx != rq->swq_last)
2766 return -EINVAL;
2767 swq = &rq->swq[rq->swq_last];
2768 cqe->wr_id = swq->wr_id;
2769 cqe++;
2770 (*budget)--;
2771 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2772 swq->slots, &rq->dbinfo.flags);
2773 rq->swq_last = swq->next_idx;
2774 *pcqe = cqe;
2775
2776 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2777 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2778 /* Add qp to flush list of the CQ */
2779 bnxt_qplib_add_flush_qp(qp);
2780 }
2781 }
2782
2783 return 0;
2784 }
2785
bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq * cq,struct cq_res_ud * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2786 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2787 struct cq_res_ud *hwcqe,
2788 struct bnxt_qplib_cqe **pcqe,
2789 int *budget)
2790 {
2791 struct bnxt_qplib_srq *srq;
2792 struct bnxt_qplib_cqe *cqe;
2793 struct bnxt_qplib_qp *qp;
2794 struct bnxt_qplib_q *rq;
2795 u32 wr_id_idx;
2796
2797 qp = (struct bnxt_qplib_qp *)((unsigned long)
2798 le64_to_cpu(hwcqe->qp_handle));
2799 if (!qp) {
2800 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2801 return -EINVAL;
2802 }
2803 if (qp->rq.flushed) {
2804 dev_dbg(&cq->hwq.pdev->dev,
2805 "%s: QP in Flush QP = %p\n", __func__, qp);
2806 return 0;
2807 }
2808 cqe = *pcqe;
2809 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2810 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2811 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2812 cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2813 cqe->flags = le16_to_cpu(hwcqe->flags);
2814 cqe->status = hwcqe->status;
2815 cqe->qp_handle = (u64)(unsigned long)qp;
2816 /*FIXME: Endianness fix needed for smace */
2817 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2818 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2819 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2820 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2821 ((le32_to_cpu(
2822 hwcqe->src_qp_high_srq_or_rq_wr_id) &
2823 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2824
2825 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2826 srq = qp->srq;
2827 if (!srq)
2828 return -EINVAL;
2829
2830 if (wr_id_idx >= srq->hwq.max_elements) {
2831 dev_err(&cq->hwq.pdev->dev,
2832 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2833 wr_id_idx, srq->hwq.max_elements);
2834 return -EINVAL;
2835 }
2836 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2837 bnxt_qplib_release_srqe(srq, wr_id_idx);
2838 cqe++;
2839 (*budget)--;
2840 *pcqe = cqe;
2841 } else {
2842 struct bnxt_qplib_swq *swq;
2843
2844 rq = &qp->rq;
2845 if (wr_id_idx > (rq->max_wqe - 1)) {
2846 dev_err(&cq->hwq.pdev->dev,
2847 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2848 wr_id_idx, rq->max_wqe);
2849 return -EINVAL;
2850 }
2851
2852 if (rq->swq_last != wr_id_idx)
2853 return -EINVAL;
2854 swq = &rq->swq[rq->swq_last];
2855 cqe->wr_id = swq->wr_id;
2856 cqe++;
2857 (*budget)--;
2858 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2859 swq->slots, &rq->dbinfo.flags);
2860 rq->swq_last = swq->next_idx;
2861 *pcqe = cqe;
2862
2863 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2864 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2865 /* Add qp to flush list of the CQ */
2866 bnxt_qplib_add_flush_qp(qp);
2867 }
2868 }
2869
2870 return 0;
2871 }
2872
bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq * cq)2873 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2874 {
2875 struct cq_base *hw_cqe;
2876 bool rc = true;
2877
2878 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
2879 /* Check for Valid bit. If the CQE is valid, return false */
2880 rc = !CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags);
2881 return rc;
2882 }
2883
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)2884 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2885 struct cq_res_raweth_qp1 *hwcqe,
2886 struct bnxt_qplib_cqe **pcqe,
2887 int *budget)
2888 {
2889 struct bnxt_qplib_qp *qp;
2890 struct bnxt_qplib_q *rq;
2891 struct bnxt_qplib_srq *srq;
2892 struct bnxt_qplib_cqe *cqe;
2893 u32 wr_id_idx;
2894
2895 qp = (struct bnxt_qplib_qp *)((unsigned long)
2896 le64_to_cpu(hwcqe->qp_handle));
2897 if (!qp) {
2898 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2899 return -EINVAL;
2900 }
2901 if (qp->rq.flushed) {
2902 dev_dbg(&cq->hwq.pdev->dev,
2903 "%s: QP in Flush QP = %p\n", __func__, qp);
2904 return 0;
2905 }
2906 cqe = *pcqe;
2907 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2908 cqe->flags = le16_to_cpu(hwcqe->flags);
2909 cqe->qp_handle = (u64)(unsigned long)qp;
2910
2911 wr_id_idx =
2912 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2913 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2914 cqe->src_qp = qp->id;
2915 if (qp->id == 1 && !cqe->length) {
2916 /* Add workaround for the length misdetection */
2917 cqe->length = 296;
2918 } else {
2919 cqe->length = le16_to_cpu(hwcqe->length);
2920 }
2921 cqe->pkey_index = qp->pkey_index;
2922 memcpy(cqe->smac, qp->smac, 6);
2923
2924 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2925 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2926 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2927
2928 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2929 srq = qp->srq;
2930 if (!srq) {
2931 dev_err(&cq->hwq.pdev->dev,
2932 "FP: SRQ used but not defined??\n");
2933 return -EINVAL;
2934 }
2935 if (wr_id_idx >= srq->hwq.max_elements) {
2936 dev_err(&cq->hwq.pdev->dev,
2937 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2938 wr_id_idx, srq->hwq.max_elements);
2939 return -EINVAL;
2940 }
2941 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2942 bnxt_qplib_release_srqe(srq, wr_id_idx);
2943 cqe++;
2944 (*budget)--;
2945 *pcqe = cqe;
2946 } else {
2947 struct bnxt_qplib_swq *swq;
2948
2949 rq = &qp->rq;
2950 if (wr_id_idx > (rq->max_wqe - 1)) {
2951 dev_err(&cq->hwq.pdev->dev,
2952 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2953 wr_id_idx, rq->max_wqe);
2954 return -EINVAL;
2955 }
2956 if (rq->swq_last != wr_id_idx)
2957 return -EINVAL;
2958 swq = &rq->swq[rq->swq_last];
2959 cqe->wr_id = swq->wr_id;
2960 cqe++;
2961 (*budget)--;
2962 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2963 swq->slots, &rq->dbinfo.flags);
2964 rq->swq_last = swq->next_idx;
2965 *pcqe = cqe;
2966
2967 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2968 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2969 /* Add qp to flush list of the CQ */
2970 bnxt_qplib_add_flush_qp(qp);
2971 }
2972 }
2973
2974 return 0;
2975 }
2976
bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq * cq,struct cq_terminal * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2977 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2978 struct cq_terminal *hwcqe,
2979 struct bnxt_qplib_cqe **pcqe,
2980 int *budget)
2981 {
2982 struct bnxt_qplib_qp *qp;
2983 struct bnxt_qplib_q *sq, *rq;
2984 struct bnxt_qplib_cqe *cqe;
2985 u32 swq_last = 0, cqe_cons;
2986 int rc = 0;
2987
2988 /* Check the Status */
2989 if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2990 dev_warn(&cq->hwq.pdev->dev,
2991 "FP: CQ Process Terminal Error status = 0x%x\n",
2992 hwcqe->status);
2993
2994 qp = (struct bnxt_qplib_qp *)((unsigned long)
2995 le64_to_cpu(hwcqe->qp_handle));
2996 if (!qp)
2997 return -EINVAL;
2998
2999 /* Must block new posting of SQ and RQ */
3000 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
3001
3002 sq = &qp->sq;
3003 rq = &qp->rq;
3004
3005 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
3006 if (cqe_cons == 0xFFFF)
3007 goto do_rq;
3008 cqe_cons %= sq->max_sw_wqe;
3009
3010 if (qp->sq.flushed) {
3011 dev_dbg(&cq->hwq.pdev->dev,
3012 "%s: QP in Flush QP = %p\n", __func__, qp);
3013 goto sq_done;
3014 }
3015
3016 /* Terminal CQE can also include aggregated successful CQEs prior.
3017 * So we must complete all CQEs from the current sq's cons to the
3018 * cq_cons with status OK
3019 */
3020 cqe = *pcqe;
3021 while (*budget) {
3022 swq_last = sq->swq_last;
3023 if (swq_last == cqe_cons)
3024 break;
3025 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
3026 memset(cqe, 0, sizeof(*cqe));
3027 cqe->status = CQ_REQ_STATUS_OK;
3028 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
3029 cqe->qp_handle = (u64)(unsigned long)qp;
3030 cqe->src_qp = qp->id;
3031 cqe->wr_id = sq->swq[swq_last].wr_id;
3032 cqe->type = sq->swq[swq_last].type;
3033 cqe++;
3034 (*budget)--;
3035 }
3036 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
3037 sq->swq[swq_last].slots, &sq->dbinfo.flags);
3038 sq->swq_last = sq->swq[swq_last].next_idx;
3039 }
3040 *pcqe = cqe;
3041 if (!(*budget) && swq_last != cqe_cons) {
3042 /* Out of budget */
3043 rc = -EAGAIN;
3044 goto sq_done;
3045 }
3046 sq_done:
3047 if (rc)
3048 return rc;
3049 do_rq:
3050 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
3051 if (cqe_cons == 0xFFFF) {
3052 goto done;
3053 } else if (cqe_cons > rq->max_wqe - 1) {
3054 dev_err(&cq->hwq.pdev->dev,
3055 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
3056 cqe_cons, rq->max_wqe);
3057 rc = -EINVAL;
3058 goto done;
3059 }
3060
3061 if (qp->rq.flushed) {
3062 dev_dbg(&cq->hwq.pdev->dev,
3063 "%s: QP in Flush QP = %p\n", __func__, qp);
3064 rc = 0;
3065 goto done;
3066 }
3067
3068 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
3069 * from the current rq->cons to the rq->prod regardless what the
3070 * rq->cons the terminal CQE indicates
3071 */
3072
3073 /* Add qp to flush list of the CQ */
3074 bnxt_qplib_add_flush_qp(qp);
3075 done:
3076 return rc;
3077 }
3078
bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq * cq,struct cq_cutoff * hwcqe)3079 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
3080 struct cq_cutoff *hwcqe)
3081 {
3082 /* Check the Status */
3083 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
3084 dev_err(&cq->hwq.pdev->dev,
3085 "FP: CQ Process Cutoff Error status = 0x%x\n",
3086 hwcqe->status);
3087 return -EINVAL;
3088 }
3089 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
3090 wake_up_interruptible(&cq->waitq);
3091
3092 return 0;
3093 }
3094
bnxt_qplib_process_flush_list(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes)3095 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
3096 struct bnxt_qplib_cqe *cqe,
3097 int num_cqes)
3098 {
3099 struct bnxt_qplib_qp *qp = NULL;
3100 u32 budget = num_cqes;
3101 unsigned long flags;
3102
3103 spin_lock_irqsave(&cq->flush_lock, flags);
3104 list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
3105 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
3106 __flush_sq(&qp->sq, qp, &cqe, &budget);
3107 }
3108
3109 list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
3110 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
3111 __flush_rq(&qp->rq, qp, &cqe, &budget);
3112 }
3113 spin_unlock_irqrestore(&cq->flush_lock, flags);
3114
3115 return num_cqes - budget;
3116 }
3117
bnxt_qplib_poll_cq(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes,struct bnxt_qplib_qp ** lib_qp)3118 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
3119 int num_cqes, struct bnxt_qplib_qp **lib_qp)
3120 {
3121 struct cq_base *hw_cqe;
3122 int budget, rc = 0;
3123 u32 hw_polled = 0;
3124 u8 type;
3125
3126 budget = num_cqes;
3127
3128 while (budget) {
3129 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
3130
3131 /* Check for Valid bit */
3132 if (!CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags))
3133 break;
3134
3135 /*
3136 * The valid test of the entry must be done first before
3137 * reading any further.
3138 */
3139 dma_rmb();
3140 /* From the device's respective CQE format to qplib_wc*/
3141 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
3142 switch (type) {
3143 case CQ_BASE_CQE_TYPE_REQ:
3144 rc = bnxt_qplib_cq_process_req(cq,
3145 (struct cq_req *)hw_cqe,
3146 &cqe, &budget,
3147 cq->hwq.cons, lib_qp);
3148 break;
3149 case CQ_BASE_CQE_TYPE_RES_RC:
3150 rc = bnxt_qplib_cq_process_res_rc(cq,
3151 (struct cq_res_rc *)
3152 hw_cqe, &cqe,
3153 &budget);
3154 break;
3155 case CQ_BASE_CQE_TYPE_RES_UD:
3156 rc = bnxt_qplib_cq_process_res_ud
3157 (cq, (struct cq_res_ud *)hw_cqe, &cqe,
3158 &budget);
3159 break;
3160 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
3161 rc = bnxt_qplib_cq_process_res_raweth_qp1
3162 (cq, (struct cq_res_raweth_qp1 *)
3163 hw_cqe, &cqe, &budget);
3164 break;
3165 case CQ_BASE_CQE_TYPE_TERMINAL:
3166 rc = bnxt_qplib_cq_process_terminal
3167 (cq, (struct cq_terminal *)hw_cqe,
3168 &cqe, &budget);
3169 break;
3170 case CQ_BASE_CQE_TYPE_CUT_OFF:
3171 bnxt_qplib_cq_process_cutoff
3172 (cq, (struct cq_cutoff *)hw_cqe);
3173 /* Done processing this CQ */
3174 goto exit;
3175 default:
3176 dev_err(&cq->hwq.pdev->dev,
3177 "process_cq unknown type 0x%lx\n",
3178 hw_cqe->cqe_type_toggle &
3179 CQ_BASE_CQE_TYPE_MASK);
3180 rc = -EINVAL;
3181 break;
3182 }
3183 if (rc < 0) {
3184 if (rc == -EAGAIN)
3185 break;
3186 /* Error while processing the CQE, just skip to the
3187 * next one
3188 */
3189 if (type != CQ_BASE_CQE_TYPE_TERMINAL)
3190 dev_err(&cq->hwq.pdev->dev,
3191 "process_cqe error rc = 0x%x\n", rc);
3192 }
3193 hw_polled++;
3194 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements, &cq->hwq.cons,
3195 1, &cq->dbinfo.flags);
3196
3197 }
3198 if (hw_polled)
3199 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
3200 exit:
3201 return num_cqes - budget;
3202 }
3203
bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq * cq,u32 arm_type)3204 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3205 {
3206 cq->dbinfo.toggle = cq->toggle;
3207 if (arm_type)
3208 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3209 /* Using cq->arm_state variable to track whether to issue cq handler */
3210 atomic_set(&cq->arm_state, 1);
3211 }
3212
bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp * qp)3213 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3214 {
3215 flush_workqueue(qp->scq->nq->cqn_wq);
3216 if (qp->scq != qp->rcq)
3217 flush_workqueue(qp->rcq->nq->cqn_wq);
3218 }
3219