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
58 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
59
bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp * qp)60 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
61 {
62 qp->sq.condition = false;
63 qp->sq.send_phantom = false;
64 qp->sq.single = false;
65 }
66
67 /* Flush list */
__bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)68 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
69 {
70 struct bnxt_qplib_cq *scq, *rcq;
71
72 scq = qp->scq;
73 rcq = qp->rcq;
74
75 if (!qp->sq.flushed) {
76 dev_dbg(&scq->hwq.pdev->dev,
77 "FP: Adding to SQ Flush list = %p\n", qp);
78 bnxt_qplib_cancel_phantom_processing(qp);
79 list_add_tail(&qp->sq_flush, &scq->sqf_head);
80 qp->sq.flushed = true;
81 }
82 if (!qp->srq) {
83 if (!qp->rq.flushed) {
84 dev_dbg(&rcq->hwq.pdev->dev,
85 "FP: Adding to RQ Flush list = %p\n", qp);
86 list_add_tail(&qp->rq_flush, &rcq->rqf_head);
87 qp->rq.flushed = true;
88 }
89 }
90 }
91
bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)92 static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp,
93 unsigned long *flags)
94 __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock)
95 {
96 spin_lock_irqsave(&qp->scq->flush_lock, *flags);
97 if (qp->scq == qp->rcq)
98 __acquire(&qp->rcq->flush_lock);
99 else
100 spin_lock(&qp->rcq->flush_lock);
101 }
102
bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)103 static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp,
104 unsigned long *flags)
105 __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock)
106 {
107 if (qp->scq == qp->rcq)
108 __release(&qp->rcq->flush_lock);
109 else
110 spin_unlock(&qp->rcq->flush_lock);
111 spin_unlock_irqrestore(&qp->scq->flush_lock, *flags);
112 }
113
bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)114 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
115 {
116 unsigned long flags;
117
118 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
119 __bnxt_qplib_add_flush_qp(qp);
120 bnxt_qplib_release_cq_flush_locks(qp, &flags);
121 }
122
__bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp * qp)123 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
124 {
125 if (qp->sq.flushed) {
126 qp->sq.flushed = false;
127 list_del(&qp->sq_flush);
128 }
129 if (!qp->srq) {
130 if (qp->rq.flushed) {
131 qp->rq.flushed = false;
132 list_del(&qp->rq_flush);
133 }
134 }
135 }
136
bnxt_qplib_clean_qp(struct bnxt_qplib_qp * qp)137 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp)
138 {
139 unsigned long flags;
140
141 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
142 __clean_cq(qp->scq, (u64)(unsigned long)qp);
143 qp->sq.hwq.prod = 0;
144 qp->sq.hwq.cons = 0;
145 __clean_cq(qp->rcq, (u64)(unsigned long)qp);
146 qp->rq.hwq.prod = 0;
147 qp->rq.hwq.cons = 0;
148
149 __bnxt_qplib_del_flush_qp(qp);
150 bnxt_qplib_release_cq_flush_locks(qp, &flags);
151 }
152
bnxt_qpn_cqn_sched_task(struct work_struct * work)153 static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
154 {
155 struct bnxt_qplib_nq_work *nq_work =
156 container_of(work, struct bnxt_qplib_nq_work, work);
157
158 struct bnxt_qplib_cq *cq = nq_work->cq;
159 struct bnxt_qplib_nq *nq = nq_work->nq;
160
161 if (cq && nq) {
162 spin_lock_bh(&cq->compl_lock);
163 if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
164 dev_dbg(&nq->pdev->dev,
165 "%s:Trigger cq = %p event nq = %p\n",
166 __func__, cq, nq);
167 nq->cqn_handler(nq, cq);
168 }
169 spin_unlock_bh(&cq->compl_lock);
170 }
171 kfree(nq_work);
172 }
173
bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)174 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
175 struct bnxt_qplib_qp *qp)
176 {
177 struct bnxt_qplib_q *rq = &qp->rq;
178 struct bnxt_qplib_q *sq = &qp->sq;
179
180 if (qp->rq_hdr_buf)
181 dma_free_coherent(&res->pdev->dev,
182 rq->max_wqe * qp->rq_hdr_buf_size,
183 qp->rq_hdr_buf, qp->rq_hdr_buf_map);
184 if (qp->sq_hdr_buf)
185 dma_free_coherent(&res->pdev->dev,
186 sq->max_wqe * qp->sq_hdr_buf_size,
187 qp->sq_hdr_buf, qp->sq_hdr_buf_map);
188 qp->rq_hdr_buf = NULL;
189 qp->sq_hdr_buf = NULL;
190 qp->rq_hdr_buf_map = 0;
191 qp->sq_hdr_buf_map = 0;
192 qp->sq_hdr_buf_size = 0;
193 qp->rq_hdr_buf_size = 0;
194 }
195
bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)196 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
197 struct bnxt_qplib_qp *qp)
198 {
199 struct bnxt_qplib_q *rq = &qp->rq;
200 struct bnxt_qplib_q *sq = &qp->sq;
201 int rc = 0;
202
203 if (qp->sq_hdr_buf_size && sq->max_wqe) {
204 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
205 sq->max_wqe * qp->sq_hdr_buf_size,
206 &qp->sq_hdr_buf_map, GFP_KERNEL);
207 if (!qp->sq_hdr_buf) {
208 rc = -ENOMEM;
209 dev_err(&res->pdev->dev,
210 "Failed to create sq_hdr_buf\n");
211 goto fail;
212 }
213 }
214
215 if (qp->rq_hdr_buf_size && rq->max_wqe) {
216 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
217 rq->max_wqe *
218 qp->rq_hdr_buf_size,
219 &qp->rq_hdr_buf_map,
220 GFP_KERNEL);
221 if (!qp->rq_hdr_buf) {
222 rc = -ENOMEM;
223 dev_err(&res->pdev->dev,
224 "Failed to create rq_hdr_buf\n");
225 goto fail;
226 }
227 }
228 return 0;
229
230 fail:
231 bnxt_qplib_free_qp_hdr_buf(res, qp);
232 return rc;
233 }
234
clean_nq(struct bnxt_qplib_nq * nq,struct bnxt_qplib_cq * cq)235 static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq)
236 {
237 struct bnxt_qplib_hwq *hwq = &nq->hwq;
238 struct nq_base *nqe, **nq_ptr;
239 int budget = nq->budget;
240 uintptr_t q_handle;
241 u16 type;
242
243 spin_lock_bh(&hwq->lock);
244 /* Service the NQ until empty */
245 while (budget--) {
246 nq_ptr = (struct nq_base **)hwq->pbl_ptr;
247 nqe = &nq_ptr[NQE_PG(hwq->cons)][NQE_IDX(hwq->cons)];
248 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
249 break;
250
251 /*
252 * The valid test of the entry must be done first before
253 * reading any further.
254 */
255 dma_rmb();
256
257 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
258 switch (type) {
259 case NQ_BASE_TYPE_CQ_NOTIFICATION:
260 {
261 struct nq_cn *nqcne = (struct nq_cn *)nqe;
262
263 q_handle = le32_to_cpu(nqcne->cq_handle_low);
264 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
265 << 32;
266 if ((unsigned long)cq == q_handle) {
267 nqcne->cq_handle_low = 0;
268 nqcne->cq_handle_high = 0;
269 cq->cnq_events++;
270 }
271 break;
272 }
273 default:
274 break;
275 }
276 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
277 1, &nq->nq_db.dbinfo.flags);
278 }
279 spin_unlock_bh(&hwq->lock);
280 }
281
282 /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with
283 * this CQ.
284 */
__wait_for_all_nqes(struct bnxt_qplib_cq * cq,u16 cnq_events)285 static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events)
286 {
287 u32 retry_cnt = 100;
288
289 while (retry_cnt--) {
290 if (cnq_events == cq->cnq_events)
291 return;
292 usleep_range(50, 100);
293 clean_nq(cq->nq, cq);
294 }
295 }
296
bnxt_qplib_service_nq(struct tasklet_struct * t)297 static void bnxt_qplib_service_nq(struct tasklet_struct *t)
298 {
299 struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet);
300 struct bnxt_qplib_hwq *hwq = &nq->hwq;
301 struct bnxt_qplib_cq *cq;
302 int budget = nq->budget;
303 struct nq_base *nqe;
304 uintptr_t q_handle;
305 u32 hw_polled = 0;
306 u16 type;
307
308 spin_lock_bh(&hwq->lock);
309 /* Service the NQ until empty */
310 while (budget--) {
311 nqe = bnxt_qplib_get_qe(hwq, hwq->cons, NULL);
312 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
313 break;
314
315 /*
316 * The valid test of the entry must be done first before
317 * reading any further.
318 */
319 dma_rmb();
320
321 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
322 switch (type) {
323 case NQ_BASE_TYPE_CQ_NOTIFICATION:
324 {
325 struct nq_cn *nqcne = (struct nq_cn *)nqe;
326
327 q_handle = le32_to_cpu(nqcne->cq_handle_low);
328 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
329 << 32;
330 cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
331 if (!cq)
332 break;
333 bnxt_qplib_armen_db(&cq->dbinfo,
334 DBC_DBC_TYPE_CQ_ARMENA);
335 spin_lock_bh(&cq->compl_lock);
336 atomic_set(&cq->arm_state, 0);
337 if (nq->cqn_handler(nq, (cq)))
338 dev_warn(&nq->pdev->dev,
339 "cqn - type 0x%x not handled\n", type);
340 cq->cnq_events++;
341 spin_unlock_bh(&cq->compl_lock);
342 break;
343 }
344 case NQ_BASE_TYPE_SRQ_EVENT:
345 {
346 struct bnxt_qplib_srq *srq;
347 struct nq_srq_event *nqsrqe =
348 (struct nq_srq_event *)nqe;
349
350 q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
351 q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
352 << 32;
353 srq = (struct bnxt_qplib_srq *)q_handle;
354 bnxt_qplib_armen_db(&srq->dbinfo,
355 DBC_DBC_TYPE_SRQ_ARMENA);
356 if (nq->srqn_handler(nq,
357 (struct bnxt_qplib_srq *)q_handle,
358 nqsrqe->event))
359 dev_warn(&nq->pdev->dev,
360 "SRQ event 0x%x not handled\n",
361 nqsrqe->event);
362 break;
363 }
364 case NQ_BASE_TYPE_DBQ_EVENT:
365 break;
366 default:
367 dev_warn(&nq->pdev->dev,
368 "nqe with type = 0x%x not handled\n", type);
369 break;
370 }
371 hw_polled++;
372 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
373 1, &nq->nq_db.dbinfo.flags);
374 }
375 if (hw_polled)
376 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
377 spin_unlock_bh(&hwq->lock);
378 }
379
380 /* bnxt_re_synchronize_nq - self polling notification queue.
381 * @nq - notification queue pointer
382 *
383 * This function will start polling entries of a given notification queue
384 * for all pending entries.
385 * This function is useful to synchronize notification entries while resources
386 * are going away.
387 */
388
bnxt_re_synchronize_nq(struct bnxt_qplib_nq * nq)389 void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq)
390 {
391 int budget = nq->budget;
392
393 nq->budget = nq->hwq.max_elements;
394 bnxt_qplib_service_nq(&nq->nq_tasklet);
395 nq->budget = budget;
396 }
397
bnxt_qplib_nq_irq(int irq,void * dev_instance)398 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
399 {
400 struct bnxt_qplib_nq *nq = dev_instance;
401 struct bnxt_qplib_hwq *hwq = &nq->hwq;
402 u32 sw_cons;
403
404 /* Prefetch the NQ element */
405 sw_cons = HWQ_CMP(hwq->cons, hwq);
406 prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL));
407
408 /* Fan out to CPU affinitized kthreads? */
409 tasklet_schedule(&nq->nq_tasklet);
410
411 return IRQ_HANDLED;
412 }
413
bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq * nq,bool kill)414 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill)
415 {
416 if (!nq->requested)
417 return;
418
419 nq->requested = false;
420 /* Mask h/w interrupt */
421 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false);
422 /* Sync with last running IRQ handler */
423 synchronize_irq(nq->msix_vec);
424 irq_set_affinity_hint(nq->msix_vec, NULL);
425 free_irq(nq->msix_vec, nq);
426 kfree(nq->name);
427 nq->name = NULL;
428
429 if (kill)
430 tasklet_kill(&nq->nq_tasklet);
431 tasklet_disable(&nq->nq_tasklet);
432 }
433
bnxt_qplib_disable_nq(struct bnxt_qplib_nq * nq)434 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
435 {
436 if (nq->cqn_wq) {
437 destroy_workqueue(nq->cqn_wq);
438 nq->cqn_wq = NULL;
439 }
440
441 /* Make sure the HW is stopped! */
442 bnxt_qplib_nq_stop_irq(nq, true);
443
444 if (nq->nq_db.reg.bar_reg) {
445 iounmap(nq->nq_db.reg.bar_reg);
446 nq->nq_db.reg.bar_reg = NULL;
447 }
448
449 nq->cqn_handler = NULL;
450 nq->srqn_handler = NULL;
451 nq->msix_vec = 0;
452 }
453
bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq * nq,int nq_indx,int msix_vector,bool need_init)454 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
455 int msix_vector, bool need_init)
456 {
457 struct bnxt_qplib_res *res = nq->res;
458 int rc;
459
460 if (nq->requested)
461 return -EFAULT;
462
463 nq->msix_vec = msix_vector;
464 if (need_init)
465 tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq);
466 else
467 tasklet_enable(&nq->nq_tasklet);
468
469 nq->name = kasprintf(GFP_KERNEL, "bnxt_re-nq-%d@pci:%s",
470 nq_indx, pci_name(res->pdev));
471 if (!nq->name)
472 return -ENOMEM;
473 rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq);
474 if (rc) {
475 kfree(nq->name);
476 nq->name = NULL;
477 tasklet_disable(&nq->nq_tasklet);
478 return rc;
479 }
480
481 cpumask_clear(&nq->mask);
482 cpumask_set_cpu(nq_indx, &nq->mask);
483 rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask);
484 if (rc) {
485 dev_warn(&nq->pdev->dev,
486 "set affinity failed; vector: %d nq_idx: %d\n",
487 nq->msix_vec, nq_indx);
488 }
489 nq->requested = true;
490 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, res->cctx, true);
491
492 return rc;
493 }
494
bnxt_qplib_map_nq_db(struct bnxt_qplib_nq * nq,u32 reg_offt)495 static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq, u32 reg_offt)
496 {
497 resource_size_t reg_base;
498 struct bnxt_qplib_nq_db *nq_db;
499 struct pci_dev *pdev;
500
501 pdev = nq->pdev;
502 nq_db = &nq->nq_db;
503
504 nq_db->dbinfo.flags = 0;
505 nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION;
506 nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id);
507 if (!nq_db->reg.bar_base) {
508 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!",
509 nq_db->reg.bar_id);
510 return -ENOMEM;
511 }
512
513 reg_base = nq_db->reg.bar_base + reg_offt;
514 /* Unconditionally map 8 bytes to support 57500 series */
515 nq_db->reg.len = 8;
516 nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len);
517 if (!nq_db->reg.bar_reg) {
518 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed",
519 nq_db->reg.bar_id);
520 return -ENOMEM;
521 }
522
523 nq_db->dbinfo.db = nq_db->reg.bar_reg;
524 nq_db->dbinfo.hwq = &nq->hwq;
525 nq_db->dbinfo.xid = nq->ring_id;
526
527 return 0;
528 }
529
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)530 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
531 int nq_idx, int msix_vector, int bar_reg_offset,
532 cqn_handler_t cqn_handler,
533 srqn_handler_t srqn_handler)
534 {
535 int rc;
536
537 nq->pdev = pdev;
538 nq->cqn_handler = cqn_handler;
539 nq->srqn_handler = srqn_handler;
540
541 /* Have a task to schedule CQ notifiers in post send case */
542 nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq");
543 if (!nq->cqn_wq)
544 return -ENOMEM;
545
546 rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset);
547 if (rc)
548 goto fail;
549
550 rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true);
551 if (rc) {
552 dev_err(&nq->pdev->dev,
553 "Failed to request irq for nq-idx %d\n", nq_idx);
554 goto fail;
555 }
556
557 return 0;
558 fail:
559 bnxt_qplib_disable_nq(nq);
560 return rc;
561 }
562
bnxt_qplib_free_nq(struct bnxt_qplib_nq * nq)563 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
564 {
565 if (nq->hwq.max_elements) {
566 bnxt_qplib_free_hwq(nq->res, &nq->hwq);
567 nq->hwq.max_elements = 0;
568 }
569 }
570
bnxt_qplib_alloc_nq(struct bnxt_qplib_res * res,struct bnxt_qplib_nq * nq)571 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq)
572 {
573 struct bnxt_qplib_hwq_attr hwq_attr = {};
574 struct bnxt_qplib_sg_info sginfo = {};
575
576 nq->pdev = res->pdev;
577 nq->res = res;
578 if (!nq->hwq.max_elements ||
579 nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
580 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
581
582 sginfo.pgsize = PAGE_SIZE;
583 sginfo.pgshft = PAGE_SHIFT;
584 hwq_attr.res = res;
585 hwq_attr.sginfo = &sginfo;
586 hwq_attr.depth = nq->hwq.max_elements;
587 hwq_attr.stride = sizeof(struct nq_base);
588 hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res);
589 if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) {
590 dev_err(&nq->pdev->dev, "FP NQ allocation failed");
591 return -ENOMEM;
592 }
593 nq->budget = 8;
594 return 0;
595 }
596
597 /* SRQ */
bnxt_qplib_destroy_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)598 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
599 struct bnxt_qplib_srq *srq)
600 {
601 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
602 struct creq_destroy_srq_resp resp = {};
603 struct bnxt_qplib_cmdqmsg msg = {};
604 struct cmdq_destroy_srq req = {};
605 int rc;
606
607 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
608 CMDQ_BASE_OPCODE_DESTROY_SRQ,
609 sizeof(req));
610
611 /* Configure the request */
612 req.srq_cid = cpu_to_le32(srq->id);
613
614 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
615 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
616 kfree(srq->swq);
617 if (rc)
618 return;
619 bnxt_qplib_free_hwq(res, &srq->hwq);
620 }
621
bnxt_qplib_create_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)622 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
623 struct bnxt_qplib_srq *srq)
624 {
625 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
626 struct bnxt_qplib_hwq_attr hwq_attr = {};
627 struct creq_create_srq_resp resp = {};
628 struct bnxt_qplib_cmdqmsg msg = {};
629 struct cmdq_create_srq req = {};
630 struct bnxt_qplib_pbl *pbl;
631 u16 pg_sz_lvl;
632 int rc, idx;
633
634 hwq_attr.res = res;
635 hwq_attr.sginfo = &srq->sg_info;
636 hwq_attr.depth = srq->max_wqe;
637 hwq_attr.stride = srq->wqe_size;
638 hwq_attr.type = HWQ_TYPE_QUEUE;
639 rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr);
640 if (rc)
641 return rc;
642
643 srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
644 GFP_KERNEL);
645 if (!srq->swq) {
646 rc = -ENOMEM;
647 goto fail;
648 }
649 srq->dbinfo.flags = 0;
650 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
651 CMDQ_BASE_OPCODE_CREATE_SRQ,
652 sizeof(req));
653
654 /* Configure the request */
655 req.dpi = cpu_to_le32(srq->dpi->dpi);
656 req.srq_handle = cpu_to_le64((uintptr_t)srq);
657
658 req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
659 pbl = &srq->hwq.pbl[PBL_LVL_0];
660 pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
661 CMDQ_CREATE_SRQ_PG_SIZE_SFT);
662 pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
663 CMDQ_CREATE_SRQ_LVL_SFT;
664 req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
665 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
666 req.pd_id = cpu_to_le32(srq->pd->id);
667 req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
668
669 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
670 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
671 if (rc)
672 goto fail;
673
674 spin_lock_init(&srq->lock);
675 srq->start_idx = 0;
676 srq->last_idx = srq->hwq.max_elements - 1;
677 for (idx = 0; idx < srq->hwq.max_elements; idx++)
678 srq->swq[idx].next_idx = idx + 1;
679 srq->swq[srq->last_idx].next_idx = -1;
680
681 srq->id = le32_to_cpu(resp.xid);
682 srq->dbinfo.hwq = &srq->hwq;
683 srq->dbinfo.xid = srq->id;
684 srq->dbinfo.db = srq->dpi->dbr;
685 srq->dbinfo.max_slot = 1;
686 srq->dbinfo.priv_db = res->dpi_tbl.priv_db;
687 if (srq->threshold)
688 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
689 srq->arm_req = false;
690
691 return 0;
692 fail:
693 bnxt_qplib_free_hwq(res, &srq->hwq);
694 kfree(srq->swq);
695
696 return rc;
697 }
698
bnxt_qplib_modify_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)699 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
700 struct bnxt_qplib_srq *srq)
701 {
702 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
703 u32 count;
704
705 count = __bnxt_qplib_get_avail(srq_hwq);
706 if (count > srq->threshold) {
707 srq->arm_req = false;
708 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
709 } else {
710 /* Deferred arming */
711 srq->arm_req = true;
712 }
713
714 return 0;
715 }
716
bnxt_qplib_query_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)717 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
718 struct bnxt_qplib_srq *srq)
719 {
720 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
721 struct creq_query_srq_resp resp = {};
722 struct bnxt_qplib_cmdqmsg msg = {};
723 struct bnxt_qplib_rcfw_sbuf sbuf;
724 struct creq_query_srq_resp_sb *sb;
725 struct cmdq_query_srq req = {};
726 int rc;
727
728 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
729 CMDQ_BASE_OPCODE_QUERY_SRQ,
730 sizeof(req));
731
732 /* Configure the request */
733 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
734 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
735 &sbuf.dma_addr, GFP_KERNEL);
736 if (!sbuf.sb)
737 return -ENOMEM;
738 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
739 req.srq_cid = cpu_to_le32(srq->id);
740 sb = sbuf.sb;
741 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
742 sizeof(resp), 0);
743 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
744 if (!rc)
745 srq->threshold = le16_to_cpu(sb->srq_limit);
746 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
747 sbuf.sb, sbuf.dma_addr);
748
749 return rc;
750 }
751
bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq * srq,struct bnxt_qplib_swqe * wqe)752 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
753 struct bnxt_qplib_swqe *wqe)
754 {
755 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
756 struct rq_wqe *srqe;
757 struct sq_sge *hw_sge;
758 u32 count = 0;
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 spin_lock(&srq_hwq->lock);
791 count = __bnxt_qplib_get_avail(srq_hwq);
792 spin_unlock(&srq_hwq->lock);
793 /* Ring DB */
794 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
795 if (srq->arm_req == true && count > srq->threshold) {
796 srq->arm_req = false;
797 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
798 }
799
800 return 0;
801 }
802
803 /* QP */
804
bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q * que)805 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
806 {
807 int indx;
808
809 que->swq = kcalloc(que->max_wqe, sizeof(*que->swq), GFP_KERNEL);
810 if (!que->swq)
811 return -ENOMEM;
812
813 que->swq_start = 0;
814 que->swq_last = que->max_wqe - 1;
815 for (indx = 0; indx < que->max_wqe; indx++)
816 que->swq[indx].next_idx = indx + 1;
817 que->swq[que->swq_last].next_idx = 0; /* Make it circular */
818 que->swq_last = 0;
819
820 return 0;
821 }
822
bnxt_qplib_create_qp1(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)823 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
824 {
825 struct bnxt_qplib_hwq_attr hwq_attr = {};
826 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
827 struct creq_create_qp1_resp resp = {};
828 struct bnxt_qplib_cmdqmsg msg = {};
829 struct bnxt_qplib_q *sq = &qp->sq;
830 struct bnxt_qplib_q *rq = &qp->rq;
831 struct cmdq_create_qp1 req = {};
832 struct bnxt_qplib_pbl *pbl;
833 u32 qp_flags = 0;
834 u8 pg_sz_lvl;
835 u32 tbl_indx;
836 int rc;
837
838 sq->dbinfo.flags = 0;
839 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
840 CMDQ_BASE_OPCODE_CREATE_QP1,
841 sizeof(req));
842 /* General */
843 req.type = qp->type;
844 req.dpi = cpu_to_le32(qp->dpi->dpi);
845 req.qp_handle = cpu_to_le64(qp->qp_handle);
846
847 /* SQ */
848 hwq_attr.res = res;
849 hwq_attr.sginfo = &sq->sg_info;
850 hwq_attr.stride = sizeof(struct sq_sge);
851 hwq_attr.depth = bnxt_qplib_get_depth(sq);
852 hwq_attr.type = HWQ_TYPE_QUEUE;
853 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
854 if (rc)
855 return rc;
856
857 rc = bnxt_qplib_alloc_init_swq(sq);
858 if (rc)
859 goto fail_sq;
860
861 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
862 pbl = &sq->hwq.pbl[PBL_LVL_0];
863 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
864 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
865 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
866 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
867 req.sq_pg_size_sq_lvl = pg_sz_lvl;
868 req.sq_fwo_sq_sge =
869 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
870 CMDQ_CREATE_QP1_SQ_SGE_SFT);
871 req.scq_cid = cpu_to_le32(qp->scq->id);
872
873 /* RQ */
874 if (rq->max_wqe) {
875 rq->dbinfo.flags = 0;
876 hwq_attr.res = res;
877 hwq_attr.sginfo = &rq->sg_info;
878 hwq_attr.stride = sizeof(struct sq_sge);
879 hwq_attr.depth = bnxt_qplib_get_depth(rq);
880 hwq_attr.type = HWQ_TYPE_QUEUE;
881 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
882 if (rc)
883 goto sq_swq;
884 rc = bnxt_qplib_alloc_init_swq(rq);
885 if (rc)
886 goto fail_rq;
887 req.rq_size = cpu_to_le32(rq->max_wqe);
888 pbl = &rq->hwq.pbl[PBL_LVL_0];
889 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
890 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
891 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
892 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
893 req.rq_pg_size_rq_lvl = pg_sz_lvl;
894 req.rq_fwo_rq_sge =
895 cpu_to_le16((rq->max_sge &
896 CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
897 CMDQ_CREATE_QP1_RQ_SGE_SFT);
898 }
899 req.rcq_cid = cpu_to_le32(qp->rcq->id);
900 /* Header buffer - allow hdr_buf pass in */
901 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
902 if (rc) {
903 rc = -ENOMEM;
904 goto rq_rwq;
905 }
906 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
907 req.qp_flags = cpu_to_le32(qp_flags);
908 req.pd_id = cpu_to_le32(qp->pd->id);
909
910 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
911 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
912 if (rc)
913 goto fail;
914
915 qp->id = le32_to_cpu(resp.xid);
916 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
917 qp->cctx = res->cctx;
918 sq->dbinfo.hwq = &sq->hwq;
919 sq->dbinfo.xid = qp->id;
920 sq->dbinfo.db = qp->dpi->dbr;
921 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
922 if (rq->max_wqe) {
923 rq->dbinfo.hwq = &rq->hwq;
924 rq->dbinfo.xid = qp->id;
925 rq->dbinfo.db = qp->dpi->dbr;
926 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
927 }
928 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
929 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
930 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
931
932 return 0;
933
934 fail:
935 bnxt_qplib_free_qp_hdr_buf(res, qp);
936 rq_rwq:
937 kfree(rq->swq);
938 fail_rq:
939 bnxt_qplib_free_hwq(res, &rq->hwq);
940 sq_swq:
941 kfree(sq->swq);
942 fail_sq:
943 bnxt_qplib_free_hwq(res, &sq->hwq);
944 return rc;
945 }
946
bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp * qp,int size)947 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
948 {
949 struct bnxt_qplib_hwq *hwq;
950 struct bnxt_qplib_q *sq;
951 u64 fpsne, psn_pg;
952 u16 indx_pad = 0;
953
954 sq = &qp->sq;
955 hwq = &sq->hwq;
956 /* First psn entry */
957 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
958 if (!IS_ALIGNED(fpsne, PAGE_SIZE))
959 indx_pad = (fpsne & ~PAGE_MASK) / size;
960 hwq->pad_pgofft = indx_pad;
961 hwq->pad_pg = (u64 *)psn_pg;
962 hwq->pad_stride = size;
963 }
964
bnxt_qplib_create_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)965 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
966 {
967 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
968 struct bnxt_qplib_hwq_attr hwq_attr = {};
969 struct bnxt_qplib_sg_info sginfo = {};
970 struct creq_create_qp_resp resp = {};
971 struct bnxt_qplib_cmdqmsg msg = {};
972 struct bnxt_qplib_q *sq = &qp->sq;
973 struct bnxt_qplib_q *rq = &qp->rq;
974 struct cmdq_create_qp req = {};
975 int rc, req_size, psn_sz = 0;
976 struct bnxt_qplib_hwq *xrrq;
977 struct bnxt_qplib_pbl *pbl;
978 u32 qp_flags = 0;
979 u8 pg_sz_lvl;
980 u32 tbl_indx;
981 u16 nsge;
982
983 if (res->dattr)
984 qp->dev_cap_flags = res->dattr->dev_cap_flags;
985
986 sq->dbinfo.flags = 0;
987 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
988 CMDQ_BASE_OPCODE_CREATE_QP,
989 sizeof(req));
990
991 /* General */
992 req.type = qp->type;
993 req.dpi = cpu_to_le32(qp->dpi->dpi);
994 req.qp_handle = cpu_to_le64(qp->qp_handle);
995
996 /* SQ */
997 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
998 psn_sz = bnxt_qplib_is_chip_gen_p5(res->cctx) ?
999 sizeof(struct sq_psn_search_ext) :
1000 sizeof(struct sq_psn_search);
1001
1002 if (BNXT_RE_HW_RETX(qp->dev_cap_flags)) {
1003 psn_sz = sizeof(struct sq_msn_search);
1004 qp->msn = 0;
1005 }
1006 }
1007
1008 hwq_attr.res = res;
1009 hwq_attr.sginfo = &sq->sg_info;
1010 hwq_attr.stride = sizeof(struct sq_sge);
1011 hwq_attr.depth = bnxt_qplib_get_depth(sq);
1012 hwq_attr.aux_stride = psn_sz;
1013 hwq_attr.aux_depth = psn_sz ? bnxt_qplib_set_sq_size(sq, qp->wqe_mode)
1014 : 0;
1015 /* Update msn tbl size */
1016 if (BNXT_RE_HW_RETX(qp->dev_cap_flags) && psn_sz) {
1017 hwq_attr.aux_depth = roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1018 qp->msn_tbl_sz = hwq_attr.aux_depth;
1019 qp->msn = 0;
1020 }
1021
1022 hwq_attr.type = HWQ_TYPE_QUEUE;
1023 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
1024 if (rc)
1025 return rc;
1026
1027 rc = bnxt_qplib_alloc_init_swq(sq);
1028 if (rc)
1029 goto fail_sq;
1030
1031 if (psn_sz)
1032 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1033
1034 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1035 pbl = &sq->hwq.pbl[PBL_LVL_0];
1036 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1037 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1038 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1039 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1040 req.sq_pg_size_sq_lvl = pg_sz_lvl;
1041 req.sq_fwo_sq_sge =
1042 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1043 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1044 req.scq_cid = cpu_to_le32(qp->scq->id);
1045
1046 /* RQ */
1047 if (!qp->srq) {
1048 rq->dbinfo.flags = 0;
1049 hwq_attr.res = res;
1050 hwq_attr.sginfo = &rq->sg_info;
1051 hwq_attr.stride = sizeof(struct sq_sge);
1052 hwq_attr.depth = bnxt_qplib_get_depth(rq);
1053 hwq_attr.aux_stride = 0;
1054 hwq_attr.aux_depth = 0;
1055 hwq_attr.type = HWQ_TYPE_QUEUE;
1056 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1057 if (rc)
1058 goto sq_swq;
1059 rc = bnxt_qplib_alloc_init_swq(rq);
1060 if (rc)
1061 goto fail_rq;
1062
1063 req.rq_size = cpu_to_le32(rq->max_wqe);
1064 pbl = &rq->hwq.pbl[PBL_LVL_0];
1065 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1066 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1067 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1068 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1069 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1070 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1071 6 : rq->max_sge;
1072 req.rq_fwo_rq_sge =
1073 cpu_to_le16(((nsge &
1074 CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1075 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1076 } else {
1077 /* SRQ */
1078 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1079 req.srq_cid = cpu_to_le32(qp->srq->id);
1080 }
1081 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1082
1083 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1084 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1085 if (qp->sig_type)
1086 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1087 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1088 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1089 if (_is_ext_stats_supported(res->dattr->dev_cap_flags) && !res->is_vf)
1090 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1091
1092 req.qp_flags = cpu_to_le32(qp_flags);
1093
1094 /* ORRQ and IRRQ */
1095 if (psn_sz) {
1096 xrrq = &qp->orrq;
1097 xrrq->max_elements =
1098 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1099 req_size = xrrq->max_elements *
1100 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1101 req_size &= ~(PAGE_SIZE - 1);
1102 sginfo.pgsize = req_size;
1103 sginfo.pgshft = PAGE_SHIFT;
1104
1105 hwq_attr.res = res;
1106 hwq_attr.sginfo = &sginfo;
1107 hwq_attr.depth = xrrq->max_elements;
1108 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1109 hwq_attr.aux_stride = 0;
1110 hwq_attr.aux_depth = 0;
1111 hwq_attr.type = HWQ_TYPE_CTX;
1112 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1113 if (rc)
1114 goto rq_swq;
1115 pbl = &xrrq->pbl[PBL_LVL_0];
1116 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1117
1118 xrrq = &qp->irrq;
1119 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1120 qp->max_dest_rd_atomic);
1121 req_size = xrrq->max_elements *
1122 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1123 req_size &= ~(PAGE_SIZE - 1);
1124 sginfo.pgsize = req_size;
1125 hwq_attr.depth = xrrq->max_elements;
1126 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1127 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1128 if (rc)
1129 goto fail_orrq;
1130
1131 pbl = &xrrq->pbl[PBL_LVL_0];
1132 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1133 }
1134 req.pd_id = cpu_to_le32(qp->pd->id);
1135
1136 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1137 sizeof(resp), 0);
1138 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1139 if (rc)
1140 goto fail;
1141
1142 qp->id = le32_to_cpu(resp.xid);
1143 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1144 INIT_LIST_HEAD(&qp->sq_flush);
1145 INIT_LIST_HEAD(&qp->rq_flush);
1146 qp->cctx = res->cctx;
1147 sq->dbinfo.hwq = &sq->hwq;
1148 sq->dbinfo.xid = qp->id;
1149 sq->dbinfo.db = qp->dpi->dbr;
1150 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1151 if (rq->max_wqe) {
1152 rq->dbinfo.hwq = &rq->hwq;
1153 rq->dbinfo.xid = qp->id;
1154 rq->dbinfo.db = qp->dpi->dbr;
1155 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1156 }
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
1161 return 0;
1162 fail:
1163 bnxt_qplib_free_hwq(res, &qp->irrq);
1164 fail_orrq:
1165 bnxt_qplib_free_hwq(res, &qp->orrq);
1166 rq_swq:
1167 kfree(rq->swq);
1168 fail_rq:
1169 bnxt_qplib_free_hwq(res, &rq->hwq);
1170 sq_swq:
1171 kfree(sq->swq);
1172 fail_sq:
1173 bnxt_qplib_free_hwq(res, &sq->hwq);
1174 return rc;
1175 }
1176
__modify_flags_from_init_state(struct bnxt_qplib_qp * qp)1177 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1178 {
1179 switch (qp->state) {
1180 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1181 /* INIT->RTR, configure the path_mtu to the default
1182 * 2048 if not being requested
1183 */
1184 if (!(qp->modify_flags &
1185 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1186 qp->modify_flags |=
1187 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1188 qp->path_mtu =
1189 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1190 }
1191 qp->modify_flags &=
1192 ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
1193 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1194 if (qp->max_dest_rd_atomic < 1)
1195 qp->max_dest_rd_atomic = 1;
1196 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1197 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1198 if (!(qp->modify_flags &
1199 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1200 qp->modify_flags |=
1201 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1202 qp->ah.sgid_index = 0;
1203 }
1204 break;
1205 default:
1206 break;
1207 }
1208 }
1209
__modify_flags_from_rtr_state(struct bnxt_qplib_qp * qp)1210 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1211 {
1212 switch (qp->state) {
1213 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1214 /* Bono FW requires the max_rd_atomic to be >= 1 */
1215 if (qp->max_rd_atomic < 1)
1216 qp->max_rd_atomic = 1;
1217 /* Bono FW does not allow PKEY_INDEX,
1218 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1219 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1220 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1221 * modification
1222 */
1223 qp->modify_flags &=
1224 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1225 CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1226 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1227 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1228 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1229 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1230 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1231 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1232 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1233 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1234 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1235 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1236 break;
1237 default:
1238 break;
1239 }
1240 }
1241
__filter_modify_flags(struct bnxt_qplib_qp * qp)1242 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1243 {
1244 switch (qp->cur_qp_state) {
1245 case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1246 break;
1247 case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1248 __modify_flags_from_init_state(qp);
1249 break;
1250 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1251 __modify_flags_from_rtr_state(qp);
1252 break;
1253 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1254 break;
1255 case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1256 break;
1257 case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1258 break;
1259 case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1260 break;
1261 default:
1262 break;
1263 }
1264 }
1265
bnxt_qplib_modify_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1266 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1267 {
1268 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1269 struct creq_modify_qp_resp resp = {};
1270 struct bnxt_qplib_cmdqmsg msg = {};
1271 struct cmdq_modify_qp req = {};
1272 u32 temp32[4];
1273 u32 bmask;
1274 int rc;
1275
1276 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1277 CMDQ_BASE_OPCODE_MODIFY_QP,
1278 sizeof(req));
1279
1280 /* Filter out the qp_attr_mask based on the state->new transition */
1281 __filter_modify_flags(qp);
1282 bmask = qp->modify_flags;
1283 req.modify_mask = cpu_to_le32(qp->modify_flags);
1284 req.qp_cid = cpu_to_le32(qp->id);
1285 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1286 req.network_type_en_sqd_async_notify_new_state =
1287 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1288 (qp->en_sqd_async_notify ?
1289 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1290 }
1291 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1292
1293 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1294 req.access = qp->access;
1295
1296 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1297 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1298
1299 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1300 req.qkey = cpu_to_le32(qp->qkey);
1301
1302 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1303 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1304 req.dgid[0] = cpu_to_le32(temp32[0]);
1305 req.dgid[1] = cpu_to_le32(temp32[1]);
1306 req.dgid[2] = cpu_to_le32(temp32[2]);
1307 req.dgid[3] = cpu_to_le32(temp32[3]);
1308 }
1309 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1310 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1311
1312 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1313 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1314 [qp->ah.sgid_index]);
1315
1316 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1317 req.hop_limit = qp->ah.hop_limit;
1318
1319 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1320 req.traffic_class = qp->ah.traffic_class;
1321
1322 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1323 memcpy(req.dest_mac, qp->ah.dmac, 6);
1324
1325 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1326 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1327
1328 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1329 req.timeout = qp->timeout;
1330
1331 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1332 req.retry_cnt = qp->retry_cnt;
1333
1334 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1335 req.rnr_retry = qp->rnr_retry;
1336
1337 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1338 req.min_rnr_timer = qp->min_rnr_timer;
1339
1340 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1341 req.rq_psn = cpu_to_le32(qp->rq.psn);
1342
1343 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1344 req.sq_psn = cpu_to_le32(qp->sq.psn);
1345
1346 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1347 req.max_rd_atomic =
1348 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1349
1350 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1351 req.max_dest_rd_atomic =
1352 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1353
1354 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1355 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1356 req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1357 req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1358 req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1359 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1360 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1361
1362 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);
1363
1364 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
1365 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1366 if (rc)
1367 return rc;
1368 qp->cur_qp_state = qp->state;
1369 return 0;
1370 }
1371
bnxt_qplib_query_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1372 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1373 {
1374 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1375 struct creq_query_qp_resp resp = {};
1376 struct bnxt_qplib_cmdqmsg msg = {};
1377 struct bnxt_qplib_rcfw_sbuf sbuf;
1378 struct creq_query_qp_resp_sb *sb;
1379 struct cmdq_query_qp req = {};
1380 u32 temp32[4];
1381 int i, rc;
1382
1383 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
1384 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
1385 &sbuf.dma_addr, GFP_KERNEL);
1386 if (!sbuf.sb)
1387 return -ENOMEM;
1388 sb = sbuf.sb;
1389
1390 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1391 CMDQ_BASE_OPCODE_QUERY_QP,
1392 sizeof(req));
1393
1394 req.qp_cid = cpu_to_le32(qp->id);
1395 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
1396 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
1397 sizeof(resp), 0);
1398 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1399 if (rc)
1400 goto bail;
1401 /* Extract the context from the side buffer */
1402 qp->state = sb->en_sqd_async_notify_state &
1403 CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1404 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1405 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY;
1406 qp->access = sb->access;
1407 qp->pkey_index = le16_to_cpu(sb->pkey);
1408 qp->qkey = le32_to_cpu(sb->qkey);
1409
1410 temp32[0] = le32_to_cpu(sb->dgid[0]);
1411 temp32[1] = le32_to_cpu(sb->dgid[1]);
1412 temp32[2] = le32_to_cpu(sb->dgid[2]);
1413 temp32[3] = le32_to_cpu(sb->dgid[3]);
1414 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1415
1416 qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1417
1418 qp->ah.sgid_index = 0;
1419 for (i = 0; i < res->sgid_tbl.max; i++) {
1420 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1421 qp->ah.sgid_index = i;
1422 break;
1423 }
1424 }
1425 if (i == res->sgid_tbl.max)
1426 dev_warn(&res->pdev->dev, "SGID not found??\n");
1427
1428 qp->ah.hop_limit = sb->hop_limit;
1429 qp->ah.traffic_class = sb->traffic_class;
1430 memcpy(qp->ah.dmac, sb->dest_mac, 6);
1431 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1432 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1433 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1434 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1435 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1436 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1437 qp->timeout = sb->timeout;
1438 qp->retry_cnt = sb->retry_cnt;
1439 qp->rnr_retry = sb->rnr_retry;
1440 qp->min_rnr_timer = sb->min_rnr_timer;
1441 qp->rq.psn = le32_to_cpu(sb->rq_psn);
1442 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1443 qp->sq.psn = le32_to_cpu(sb->sq_psn);
1444 qp->max_dest_rd_atomic =
1445 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1446 qp->sq.max_wqe = qp->sq.hwq.max_elements;
1447 qp->rq.max_wqe = qp->rq.hwq.max_elements;
1448 qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1449 qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1450 qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1451 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1452 memcpy(qp->smac, sb->src_mac, 6);
1453 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1454 bail:
1455 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
1456 sbuf.sb, sbuf.dma_addr);
1457 return rc;
1458 }
1459
__clean_cq(struct bnxt_qplib_cq * cq,u64 qp)1460 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1461 {
1462 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1463 u32 peek_flags, peek_cons;
1464 struct cq_base *hw_cqe;
1465 int i;
1466
1467 peek_flags = cq->dbinfo.flags;
1468 peek_cons = cq_hwq->cons;
1469 for (i = 0; i < cq_hwq->max_elements; i++) {
1470 hw_cqe = bnxt_qplib_get_qe(cq_hwq, peek_cons, NULL);
1471 if (!CQE_CMP_VALID(hw_cqe, peek_flags))
1472 continue;
1473 /*
1474 * The valid test of the entry must be done first before
1475 * reading any further.
1476 */
1477 dma_rmb();
1478 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1479 case CQ_BASE_CQE_TYPE_REQ:
1480 case CQ_BASE_CQE_TYPE_TERMINAL:
1481 {
1482 struct cq_req *cqe = (struct cq_req *)hw_cqe;
1483
1484 if (qp == le64_to_cpu(cqe->qp_handle))
1485 cqe->qp_handle = 0;
1486 break;
1487 }
1488 case CQ_BASE_CQE_TYPE_RES_RC:
1489 case CQ_BASE_CQE_TYPE_RES_UD:
1490 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1491 {
1492 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1493
1494 if (qp == le64_to_cpu(cqe->qp_handle))
1495 cqe->qp_handle = 0;
1496 break;
1497 }
1498 default:
1499 break;
1500 }
1501 bnxt_qplib_hwq_incr_cons(cq_hwq->max_elements, &peek_cons,
1502 1, &peek_flags);
1503 }
1504 }
1505
bnxt_qplib_destroy_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1506 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1507 struct bnxt_qplib_qp *qp)
1508 {
1509 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1510 struct creq_destroy_qp_resp resp = {};
1511 struct bnxt_qplib_cmdqmsg msg = {};
1512 struct cmdq_destroy_qp req = {};
1513 u32 tbl_indx;
1514 int rc;
1515
1516 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1517 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1518 rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1519
1520 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1521 CMDQ_BASE_OPCODE_DESTROY_QP,
1522 sizeof(req));
1523
1524 req.qp_cid = cpu_to_le32(qp->id);
1525 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1526 sizeof(resp), 0);
1527 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1528 if (rc) {
1529 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1530 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1531 return rc;
1532 }
1533
1534 return 0;
1535 }
1536
bnxt_qplib_free_qp_res(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1537 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1538 struct bnxt_qplib_qp *qp)
1539 {
1540 bnxt_qplib_free_qp_hdr_buf(res, qp);
1541 bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1542 kfree(qp->sq.swq);
1543
1544 bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1545 kfree(qp->rq.swq);
1546
1547 if (qp->irrq.max_elements)
1548 bnxt_qplib_free_hwq(res, &qp->irrq);
1549 if (qp->orrq.max_elements)
1550 bnxt_qplib_free_hwq(res, &qp->orrq);
1551
1552 }
1553
bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1554 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1555 struct bnxt_qplib_sge *sge)
1556 {
1557 struct bnxt_qplib_q *sq = &qp->sq;
1558 u32 sw_prod;
1559
1560 memset(sge, 0, sizeof(*sge));
1561
1562 if (qp->sq_hdr_buf) {
1563 sw_prod = sq->swq_start;
1564 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1565 sw_prod * qp->sq_hdr_buf_size);
1566 sge->lkey = 0xFFFFFFFF;
1567 sge->size = qp->sq_hdr_buf_size;
1568 return qp->sq_hdr_buf + sw_prod * sge->size;
1569 }
1570 return NULL;
1571 }
1572
bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp * qp)1573 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1574 {
1575 struct bnxt_qplib_q *rq = &qp->rq;
1576
1577 return rq->swq_start;
1578 }
1579
bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp * qp,u32 index)1580 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1581 {
1582 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1583 }
1584
bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1585 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1586 struct bnxt_qplib_sge *sge)
1587 {
1588 struct bnxt_qplib_q *rq = &qp->rq;
1589 u32 sw_prod;
1590
1591 memset(sge, 0, sizeof(*sge));
1592
1593 if (qp->rq_hdr_buf) {
1594 sw_prod = rq->swq_start;
1595 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1596 sw_prod * qp->rq_hdr_buf_size);
1597 sge->lkey = 0xFFFFFFFF;
1598 sge->size = qp->rq_hdr_buf_size;
1599 return qp->rq_hdr_buf + sw_prod * sge->size;
1600 }
1601 return NULL;
1602 }
1603
1604 /* 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)1605 static void bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp *qp,
1606 struct bnxt_qplib_swqe *wqe,
1607 struct bnxt_qplib_swq *swq)
1608 {
1609 struct sq_msn_search *msns;
1610 u32 start_psn, next_psn;
1611 u16 start_idx;
1612
1613 msns = (struct sq_msn_search *)swq->psn_search;
1614 msns->start_idx_next_psn_start_psn = 0;
1615
1616 start_psn = swq->start_psn;
1617 next_psn = swq->next_psn;
1618 start_idx = swq->slot_idx;
1619 msns->start_idx_next_psn_start_psn |=
1620 bnxt_re_update_msn_tbl(start_idx, next_psn, start_psn);
1621 qp->msn++;
1622 qp->msn %= qp->msn_tbl_sz;
1623 }
1624
bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1625 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1626 struct bnxt_qplib_swqe *wqe,
1627 struct bnxt_qplib_swq *swq)
1628 {
1629 struct sq_psn_search_ext *psns_ext;
1630 struct sq_psn_search *psns;
1631 u32 flg_npsn;
1632 u32 op_spsn;
1633
1634 if (!swq->psn_search)
1635 return;
1636 /* Handle MSN differently on cap flags */
1637 if (BNXT_RE_HW_RETX(qp->dev_cap_flags)) {
1638 bnxt_qplib_fill_msn_search(qp, wqe, swq);
1639 return;
1640 }
1641 psns = (struct sq_psn_search *)swq->psn_search;
1642 psns = swq->psn_search;
1643 psns_ext = swq->psn_ext;
1644
1645 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1646 SQ_PSN_SEARCH_START_PSN_MASK);
1647 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1648 SQ_PSN_SEARCH_OPCODE_MASK);
1649 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1650 SQ_PSN_SEARCH_NEXT_PSN_MASK);
1651
1652 if (bnxt_qplib_is_chip_gen_p5(qp->cctx)) {
1653 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1654 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1655 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1656 } else {
1657 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1658 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1659 }
1660 }
1661
bnxt_qplib_put_inline(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * idx)1662 static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1663 struct bnxt_qplib_swqe *wqe,
1664 u16 *idx)
1665 {
1666 struct bnxt_qplib_hwq *hwq;
1667 int len, t_len, offt;
1668 bool pull_dst = true;
1669 void *il_dst = NULL;
1670 void *il_src = NULL;
1671 int t_cplen, cplen;
1672 int indx;
1673
1674 hwq = &qp->sq.hwq;
1675 t_len = 0;
1676 for (indx = 0; indx < wqe->num_sge; indx++) {
1677 len = wqe->sg_list[indx].size;
1678 il_src = (void *)wqe->sg_list[indx].addr;
1679 t_len += len;
1680 if (t_len > qp->max_inline_data)
1681 return -ENOMEM;
1682 while (len) {
1683 if (pull_dst) {
1684 pull_dst = false;
1685 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1686 (*idx)++;
1687 t_cplen = 0;
1688 offt = 0;
1689 }
1690 cplen = min_t(int, len, sizeof(struct sq_sge));
1691 cplen = min_t(int, cplen,
1692 (sizeof(struct sq_sge) - offt));
1693 memcpy(il_dst, il_src, cplen);
1694 t_cplen += cplen;
1695 il_src += cplen;
1696 il_dst += cplen;
1697 offt += cplen;
1698 len -= cplen;
1699 if (t_cplen == sizeof(struct sq_sge))
1700 pull_dst = true;
1701 }
1702 }
1703
1704 return t_len;
1705 }
1706
bnxt_qplib_put_sges(struct bnxt_qplib_hwq * hwq,struct bnxt_qplib_sge * ssge,u16 nsge,u16 * idx)1707 static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1708 struct bnxt_qplib_sge *ssge,
1709 u16 nsge, u16 *idx)
1710 {
1711 struct sq_sge *dsge;
1712 int indx, len = 0;
1713
1714 for (indx = 0; indx < nsge; indx++, (*idx)++) {
1715 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1716 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1717 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1718 dsge->size = cpu_to_le32(ssge[indx].size);
1719 len += ssge[indx].size;
1720 }
1721
1722 return len;
1723 }
1724
bnxt_qplib_required_slots(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * wqe_sz,u16 * qdf,u8 mode)1725 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1726 struct bnxt_qplib_swqe *wqe,
1727 u16 *wqe_sz, u16 *qdf, u8 mode)
1728 {
1729 u32 ilsize, bytes;
1730 u16 nsge;
1731 u16 slot;
1732
1733 nsge = wqe->num_sge;
1734 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1735 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1736 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1737 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1738 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1739 bytes += sizeof(struct sq_send_hdr);
1740 }
1741
1742 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes);
1743 slot = bytes >> 4;
1744 *wqe_sz = slot;
1745 if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1746 slot = 8;
1747 return slot;
1748 }
1749
bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp * qp,struct bnxt_qplib_q * sq,struct bnxt_qplib_swq * swq,bool hw_retx)1750 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp *qp, struct bnxt_qplib_q *sq,
1751 struct bnxt_qplib_swq *swq, bool hw_retx)
1752 {
1753 struct bnxt_qplib_hwq *hwq;
1754 u32 pg_num, pg_indx;
1755 void *buff;
1756 u32 tail;
1757
1758 hwq = &sq->hwq;
1759 if (!hwq->pad_pg)
1760 return;
1761 tail = swq->slot_idx / sq->dbinfo.max_slot;
1762 if (hw_retx) {
1763 /* For HW retx use qp msn index */
1764 tail = qp->msn;
1765 tail %= qp->msn_tbl_sz;
1766 }
1767 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1768 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1769 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1770 swq->psn_ext = buff;
1771 swq->psn_search = buff;
1772 }
1773
bnxt_qplib_post_send_db(struct bnxt_qplib_qp * qp)1774 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1775 {
1776 struct bnxt_qplib_q *sq = &qp->sq;
1777
1778 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1779 }
1780
bnxt_qplib_post_send(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)1781 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1782 struct bnxt_qplib_swqe *wqe)
1783 {
1784 struct bnxt_qplib_nq_work *nq_work = NULL;
1785 int i, rc = 0, data_len = 0, pkt_num = 0;
1786 struct bnxt_qplib_q *sq = &qp->sq;
1787 struct bnxt_qplib_hwq *hwq;
1788 struct bnxt_qplib_swq *swq;
1789 bool sch_handler = false;
1790 u16 wqe_sz, qdf = 0;
1791 bool msn_update;
1792 void *base_hdr;
1793 void *ext_hdr;
1794 __le32 temp32;
1795 u32 wqe_idx;
1796 u32 slots;
1797 u16 idx;
1798
1799 hwq = &sq->hwq;
1800 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1801 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1802 dev_err(&hwq->pdev->dev,
1803 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1804 qp->id, qp->state);
1805 rc = -EINVAL;
1806 goto done;
1807 }
1808
1809 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1810 if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1811 dev_err(&hwq->pdev->dev,
1812 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1813 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1814 rc = -ENOMEM;
1815 goto done;
1816 }
1817
1818 swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1819 bnxt_qplib_pull_psn_buff(qp, sq, swq, BNXT_RE_HW_RETX(qp->dev_cap_flags));
1820
1821 idx = 0;
1822 swq->slot_idx = hwq->prod;
1823 swq->slots = slots;
1824 swq->wr_id = wqe->wr_id;
1825 swq->type = wqe->type;
1826 swq->flags = wqe->flags;
1827 swq->start_psn = sq->psn & BTH_PSN_MASK;
1828 if (qp->sig_type)
1829 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1830
1831 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1832 sch_handler = true;
1833 dev_dbg(&hwq->pdev->dev,
1834 "%s Error QP. Scheduling for poll_cq\n", __func__);
1835 goto queue_err;
1836 }
1837
1838 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1839 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1840 memset(base_hdr, 0, sizeof(struct sq_sge));
1841 memset(ext_hdr, 0, sizeof(struct sq_sge));
1842
1843 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1844 /* Copy the inline data */
1845 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1846 else
1847 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1848 &idx);
1849 if (data_len < 0)
1850 goto queue_err;
1851 /* Make sure we update MSN table only for wired wqes */
1852 msn_update = true;
1853 /* Specifics */
1854 switch (wqe->type) {
1855 case BNXT_QPLIB_SWQE_TYPE_SEND:
1856 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1857 struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1858 struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1859 /* Assemble info for Raw Ethertype QPs */
1860
1861 sqe->wqe_type = wqe->type;
1862 sqe->flags = wqe->flags;
1863 sqe->wqe_size = wqe_sz;
1864 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1865 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1866 sqe->length = cpu_to_le32(data_len);
1867 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1868 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1869 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1870
1871 break;
1872 }
1873 fallthrough;
1874 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1875 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1876 {
1877 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1878 struct sq_send_hdr *sqe = base_hdr;
1879
1880 sqe->wqe_type = wqe->type;
1881 sqe->flags = wqe->flags;
1882 sqe->wqe_size = wqe_sz;
1883 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1884 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1885 qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1886 sqe->q_key = cpu_to_le32(wqe->send.q_key);
1887 sqe->length = cpu_to_le32(data_len);
1888 sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1889 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1890 SQ_SEND_DST_QP_MASK);
1891 ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1892 SQ_SEND_AVID_MASK);
1893 msn_update = false;
1894 } else {
1895 sqe->length = cpu_to_le32(data_len);
1896 if (qp->mtu)
1897 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1898 if (!pkt_num)
1899 pkt_num = 1;
1900 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1901 }
1902 break;
1903 }
1904 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1905 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1906 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1907 {
1908 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1909 struct sq_rdma_hdr *sqe = base_hdr;
1910
1911 sqe->wqe_type = wqe->type;
1912 sqe->flags = wqe->flags;
1913 sqe->wqe_size = wqe_sz;
1914 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1915 sqe->length = cpu_to_le32((u32)data_len);
1916 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1917 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1918 if (qp->mtu)
1919 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1920 if (!pkt_num)
1921 pkt_num = 1;
1922 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1923 break;
1924 }
1925 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
1926 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
1927 {
1928 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
1929 struct sq_atomic_hdr *sqe = base_hdr;
1930
1931 sqe->wqe_type = wqe->type;
1932 sqe->flags = wqe->flags;
1933 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
1934 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
1935 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
1936 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
1937 if (qp->mtu)
1938 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1939 if (!pkt_num)
1940 pkt_num = 1;
1941 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1942 break;
1943 }
1944 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
1945 {
1946 struct sq_localinvalidate *sqe = base_hdr;
1947
1948 sqe->wqe_type = wqe->type;
1949 sqe->flags = wqe->flags;
1950 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
1951 msn_update = false;
1952 break;
1953 }
1954 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
1955 {
1956 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
1957 struct sq_fr_pmr_hdr *sqe = base_hdr;
1958
1959 sqe->wqe_type = wqe->type;
1960 sqe->flags = wqe->flags;
1961 sqe->access_cntl = wqe->frmr.access_cntl |
1962 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
1963 sqe->zero_based_page_size_log =
1964 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
1965 SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
1966 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
1967 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
1968 temp32 = cpu_to_le32(wqe->frmr.length);
1969 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
1970 sqe->numlevels_pbl_page_size_log =
1971 ((wqe->frmr.pbl_pg_sz_log <<
1972 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
1973 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
1974 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
1975 SQ_FR_PMR_NUMLEVELS_MASK);
1976
1977 for (i = 0; i < wqe->frmr.page_list_len; i++)
1978 wqe->frmr.pbl_ptr[i] = cpu_to_le64(
1979 wqe->frmr.page_list[i] |
1980 PTU_PTE_VALID);
1981 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
1982 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
1983 msn_update = false;
1984
1985 break;
1986 }
1987 case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
1988 {
1989 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
1990 struct sq_bind_hdr *sqe = base_hdr;
1991
1992 sqe->wqe_type = wqe->type;
1993 sqe->flags = wqe->flags;
1994 sqe->access_cntl = wqe->bind.access_cntl;
1995 sqe->mw_type_zero_based = wqe->bind.mw_type |
1996 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
1997 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
1998 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
1999 ext_sqe->va = cpu_to_le64(wqe->bind.va);
2000 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
2001 msn_update = false;
2002 break;
2003 }
2004 default:
2005 /* Bad wqe, return error */
2006 rc = -EINVAL;
2007 goto done;
2008 }
2009 if (!BNXT_RE_HW_RETX(qp->dev_cap_flags) || msn_update) {
2010 swq->next_psn = sq->psn & BTH_PSN_MASK;
2011 bnxt_qplib_fill_psn_search(qp, wqe, swq);
2012 }
2013 queue_err:
2014 bnxt_qplib_swq_mod_start(sq, wqe_idx);
2015 bnxt_qplib_hwq_incr_prod(&sq->dbinfo, hwq, swq->slots);
2016 qp->wqe_cnt++;
2017 done:
2018 if (sch_handler) {
2019 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2020 if (nq_work) {
2021 nq_work->cq = qp->scq;
2022 nq_work->nq = qp->scq->nq;
2023 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2024 queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
2025 } else {
2026 dev_err(&hwq->pdev->dev,
2027 "FP: Failed to allocate SQ nq_work!\n");
2028 rc = -ENOMEM;
2029 }
2030 }
2031 return rc;
2032 }
2033
bnxt_qplib_post_recv_db(struct bnxt_qplib_qp * qp)2034 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
2035 {
2036 struct bnxt_qplib_q *rq = &qp->rq;
2037
2038 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
2039 }
2040
bnxt_qplib_post_recv(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)2041 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
2042 struct bnxt_qplib_swqe *wqe)
2043 {
2044 struct bnxt_qplib_nq_work *nq_work = NULL;
2045 struct bnxt_qplib_q *rq = &qp->rq;
2046 struct rq_wqe_hdr *base_hdr;
2047 struct rq_ext_hdr *ext_hdr;
2048 struct bnxt_qplib_hwq *hwq;
2049 struct bnxt_qplib_swq *swq;
2050 bool sch_handler = false;
2051 u16 wqe_sz, idx;
2052 u32 wqe_idx;
2053 int rc = 0;
2054
2055 hwq = &rq->hwq;
2056 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
2057 dev_err(&hwq->pdev->dev,
2058 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
2059 qp->id, qp->state);
2060 rc = -EINVAL;
2061 goto done;
2062 }
2063
2064 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
2065 dev_err(&hwq->pdev->dev,
2066 "FP: QP (0x%x) RQ is full!\n", qp->id);
2067 rc = -EINVAL;
2068 goto done;
2069 }
2070
2071 swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
2072 swq->wr_id = wqe->wr_id;
2073 swq->slots = rq->dbinfo.max_slot;
2074
2075 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2076 sch_handler = true;
2077 dev_dbg(&hwq->pdev->dev,
2078 "%s: Error QP. Scheduling for poll_cq\n", __func__);
2079 goto queue_err;
2080 }
2081
2082 idx = 0;
2083 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2084 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2085 memset(base_hdr, 0, sizeof(struct sq_sge));
2086 memset(ext_hdr, 0, sizeof(struct sq_sge));
2087 wqe_sz = (sizeof(struct rq_wqe_hdr) +
2088 wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2089 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2090 if (!wqe->num_sge) {
2091 struct sq_sge *sge;
2092
2093 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2094 sge->size = 0;
2095 wqe_sz++;
2096 }
2097 base_hdr->wqe_type = wqe->type;
2098 base_hdr->flags = wqe->flags;
2099 base_hdr->wqe_size = wqe_sz;
2100 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2101 queue_err:
2102 bnxt_qplib_swq_mod_start(rq, wqe_idx);
2103 bnxt_qplib_hwq_incr_prod(&rq->dbinfo, hwq, swq->slots);
2104 done:
2105 if (sch_handler) {
2106 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2107 if (nq_work) {
2108 nq_work->cq = qp->rcq;
2109 nq_work->nq = qp->rcq->nq;
2110 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2111 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2112 } else {
2113 dev_err(&hwq->pdev->dev,
2114 "FP: Failed to allocate RQ nq_work!\n");
2115 rc = -ENOMEM;
2116 }
2117 }
2118
2119 return rc;
2120 }
2121
2122 /* CQ */
bnxt_qplib_create_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2123 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2124 {
2125 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2126 struct bnxt_qplib_hwq_attr hwq_attr = {};
2127 struct creq_create_cq_resp resp = {};
2128 struct bnxt_qplib_cmdqmsg msg = {};
2129 struct cmdq_create_cq req = {};
2130 struct bnxt_qplib_pbl *pbl;
2131 u32 pg_sz_lvl;
2132 int rc;
2133
2134 if (!cq->dpi) {
2135 dev_err(&rcfw->pdev->dev,
2136 "FP: CREATE_CQ failed due to NULL DPI\n");
2137 return -EINVAL;
2138 }
2139
2140 cq->dbinfo.flags = 0;
2141 hwq_attr.res = res;
2142 hwq_attr.depth = cq->max_wqe;
2143 hwq_attr.stride = sizeof(struct cq_base);
2144 hwq_attr.type = HWQ_TYPE_QUEUE;
2145 hwq_attr.sginfo = &cq->sg_info;
2146 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2147 if (rc)
2148 return rc;
2149
2150 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2151 CMDQ_BASE_OPCODE_CREATE_CQ,
2152 sizeof(req));
2153
2154 req.dpi = cpu_to_le32(cq->dpi->dpi);
2155 req.cq_handle = cpu_to_le64(cq->cq_handle);
2156 req.cq_size = cpu_to_le32(cq->max_wqe);
2157 pbl = &cq->hwq.pbl[PBL_LVL_0];
2158 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2159 CMDQ_CREATE_CQ_PG_SIZE_SFT);
2160 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2161 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2162 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2163 req.cq_fco_cnq_id = cpu_to_le32(
2164 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2165 CMDQ_CREATE_CQ_CNQ_ID_SFT);
2166 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2167 sizeof(resp), 0);
2168 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2169 if (rc)
2170 goto fail;
2171
2172 cq->id = le32_to_cpu(resp.xid);
2173 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2174 init_waitqueue_head(&cq->waitq);
2175 INIT_LIST_HEAD(&cq->sqf_head);
2176 INIT_LIST_HEAD(&cq->rqf_head);
2177 spin_lock_init(&cq->compl_lock);
2178 spin_lock_init(&cq->flush_lock);
2179
2180 cq->dbinfo.hwq = &cq->hwq;
2181 cq->dbinfo.xid = cq->id;
2182 cq->dbinfo.db = cq->dpi->dbr;
2183 cq->dbinfo.priv_db = res->dpi_tbl.priv_db;
2184
2185 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2186
2187 return 0;
2188
2189 fail:
2190 bnxt_qplib_free_hwq(res, &cq->hwq);
2191 return rc;
2192 }
2193
bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2194 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2195 struct bnxt_qplib_cq *cq)
2196 {
2197 bnxt_qplib_free_hwq(res, &cq->hwq);
2198 memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2199 /* Reset only the cons bit in the flags */
2200 cq->dbinfo.flags &= ~(1UL << BNXT_QPLIB_FLAG_EPOCH_CONS_SHIFT);
2201 }
2202
bnxt_qplib_resize_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq,int new_cqes)2203 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2204 int new_cqes)
2205 {
2206 struct bnxt_qplib_hwq_attr hwq_attr = {};
2207 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2208 struct creq_resize_cq_resp resp = {};
2209 struct bnxt_qplib_cmdqmsg msg = {};
2210 struct cmdq_resize_cq req = {};
2211 struct bnxt_qplib_pbl *pbl;
2212 u32 pg_sz, lvl, new_sz;
2213 int rc;
2214
2215 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2216 CMDQ_BASE_OPCODE_RESIZE_CQ,
2217 sizeof(req));
2218 hwq_attr.sginfo = &cq->sg_info;
2219 hwq_attr.res = res;
2220 hwq_attr.depth = new_cqes;
2221 hwq_attr.stride = sizeof(struct cq_base);
2222 hwq_attr.type = HWQ_TYPE_QUEUE;
2223 rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2224 if (rc)
2225 return rc;
2226
2227 req.cq_cid = cpu_to_le32(cq->id);
2228 pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2229 pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2230 lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2231 CMDQ_RESIZE_CQ_LVL_MASK;
2232 new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2233 CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2234 req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2235 req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2236
2237 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2238 sizeof(resp), 0);
2239 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2240 return rc;
2241 }
2242
bnxt_qplib_destroy_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2243 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2244 {
2245 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2246 struct creq_destroy_cq_resp resp = {};
2247 struct bnxt_qplib_cmdqmsg msg = {};
2248 struct cmdq_destroy_cq req = {};
2249 u16 total_cnq_events;
2250 int rc;
2251
2252 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2253 CMDQ_BASE_OPCODE_DESTROY_CQ,
2254 sizeof(req));
2255
2256 req.cq_cid = cpu_to_le32(cq->id);
2257 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2258 sizeof(resp), 0);
2259 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2260 if (rc)
2261 return rc;
2262 total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2263 __wait_for_all_nqes(cq, total_cnq_events);
2264 bnxt_qplib_free_hwq(res, &cq->hwq);
2265 return 0;
2266 }
2267
__flush_sq(struct bnxt_qplib_q * sq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2268 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2269 struct bnxt_qplib_cqe **pcqe, int *budget)
2270 {
2271 struct bnxt_qplib_cqe *cqe;
2272 u32 start, last;
2273 int rc = 0;
2274
2275 /* Now complete all outstanding SQEs with FLUSHED_ERR */
2276 start = sq->swq_start;
2277 cqe = *pcqe;
2278 while (*budget) {
2279 last = sq->swq_last;
2280 if (start == last)
2281 break;
2282 /* Skip the FENCE WQE completions */
2283 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2284 bnxt_qplib_cancel_phantom_processing(qp);
2285 goto skip_compl;
2286 }
2287 memset(cqe, 0, sizeof(*cqe));
2288 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2289 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2290 cqe->qp_handle = (u64)(unsigned long)qp;
2291 cqe->wr_id = sq->swq[last].wr_id;
2292 cqe->src_qp = qp->id;
2293 cqe->type = sq->swq[last].type;
2294 cqe++;
2295 (*budget)--;
2296 skip_compl:
2297 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2298 sq->swq[last].slots, &sq->dbinfo.flags);
2299 sq->swq_last = sq->swq[last].next_idx;
2300 }
2301 *pcqe = cqe;
2302 if (!(*budget) && sq->swq_last != start)
2303 /* Out of budget */
2304 rc = -EAGAIN;
2305
2306 return rc;
2307 }
2308
__flush_rq(struct bnxt_qplib_q * rq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2309 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2310 struct bnxt_qplib_cqe **pcqe, int *budget)
2311 {
2312 struct bnxt_qplib_cqe *cqe;
2313 u32 start, last;
2314 int opcode = 0;
2315 int rc = 0;
2316
2317 switch (qp->type) {
2318 case CMDQ_CREATE_QP1_TYPE_GSI:
2319 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2320 break;
2321 case CMDQ_CREATE_QP_TYPE_RC:
2322 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2323 break;
2324 case CMDQ_CREATE_QP_TYPE_UD:
2325 case CMDQ_CREATE_QP_TYPE_GSI:
2326 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2327 break;
2328 }
2329
2330 /* Flush the rest of the RQ */
2331 start = rq->swq_start;
2332 cqe = *pcqe;
2333 while (*budget) {
2334 last = rq->swq_last;
2335 if (last == start)
2336 break;
2337 memset(cqe, 0, sizeof(*cqe));
2338 cqe->status =
2339 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2340 cqe->opcode = opcode;
2341 cqe->qp_handle = (unsigned long)qp;
2342 cqe->wr_id = rq->swq[last].wr_id;
2343 cqe++;
2344 (*budget)--;
2345 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2346 rq->swq[last].slots, &rq->dbinfo.flags);
2347 rq->swq_last = rq->swq[last].next_idx;
2348 }
2349 *pcqe = cqe;
2350 if (!*budget && rq->swq_last != start)
2351 /* Out of budget */
2352 rc = -EAGAIN;
2353
2354 return rc;
2355 }
2356
bnxt_qplib_mark_qp_error(void * qp_handle)2357 void bnxt_qplib_mark_qp_error(void *qp_handle)
2358 {
2359 struct bnxt_qplib_qp *qp = qp_handle;
2360
2361 if (!qp)
2362 return;
2363
2364 /* Must block new posting of SQ and RQ */
2365 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2366 bnxt_qplib_cancel_phantom_processing(qp);
2367 }
2368
2369 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2370 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2371 */
do_wa9060(struct bnxt_qplib_qp * qp,struct bnxt_qplib_cq * cq,u32 cq_cons,u32 swq_last,u32 cqe_sq_cons)2372 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2373 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2374 {
2375 u32 peek_sw_cq_cons, peek_sq_cons_idx, peek_flags;
2376 struct bnxt_qplib_q *sq = &qp->sq;
2377 struct cq_req *peek_req_hwcqe;
2378 struct bnxt_qplib_qp *peek_qp;
2379 struct bnxt_qplib_q *peek_sq;
2380 struct bnxt_qplib_swq *swq;
2381 struct cq_base *peek_hwcqe;
2382 int i, rc = 0;
2383
2384 /* Normal mode */
2385 /* Check for the psn_search marking before completing */
2386 swq = &sq->swq[swq_last];
2387 if (swq->psn_search &&
2388 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2389 /* Unmark */
2390 swq->psn_search->flags_next_psn = cpu_to_le32
2391 (le32_to_cpu(swq->psn_search->flags_next_psn)
2392 & ~0x80000000);
2393 dev_dbg(&cq->hwq.pdev->dev,
2394 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2395 cq_cons, qp->id, swq_last, cqe_sq_cons);
2396 sq->condition = true;
2397 sq->send_phantom = true;
2398
2399 /* TODO: Only ARM if the previous SQE is ARMALL */
2400 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2401 rc = -EAGAIN;
2402 goto out;
2403 }
2404 if (sq->condition) {
2405 /* Peek at the completions */
2406 peek_flags = cq->dbinfo.flags;
2407 peek_sw_cq_cons = cq_cons;
2408 i = cq->hwq.max_elements;
2409 while (i--) {
2410 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2411 peek_sw_cq_cons, NULL);
2412 /* If the next hwcqe is VALID */
2413 if (CQE_CMP_VALID(peek_hwcqe, peek_flags)) {
2414 /*
2415 * The valid test of the entry must be done first before
2416 * reading any further.
2417 */
2418 dma_rmb();
2419 /* If the next hwcqe is a REQ */
2420 if ((peek_hwcqe->cqe_type_toggle &
2421 CQ_BASE_CQE_TYPE_MASK) ==
2422 CQ_BASE_CQE_TYPE_REQ) {
2423 peek_req_hwcqe = (struct cq_req *)
2424 peek_hwcqe;
2425 peek_qp = (struct bnxt_qplib_qp *)
2426 ((unsigned long)
2427 le64_to_cpu
2428 (peek_req_hwcqe->qp_handle));
2429 peek_sq = &peek_qp->sq;
2430 peek_sq_cons_idx =
2431 ((le16_to_cpu(
2432 peek_req_hwcqe->sq_cons_idx)
2433 - 1) % sq->max_wqe);
2434 /* If the hwcqe's sq's wr_id matches */
2435 if (peek_sq == sq &&
2436 sq->swq[peek_sq_cons_idx].wr_id ==
2437 BNXT_QPLIB_FENCE_WRID) {
2438 /*
2439 * Unbreak only if the phantom
2440 * comes back
2441 */
2442 dev_dbg(&cq->hwq.pdev->dev,
2443 "FP: Got Phantom CQE\n");
2444 sq->condition = false;
2445 sq->single = true;
2446 rc = 0;
2447 goto out;
2448 }
2449 }
2450 /* Valid but not the phantom, so keep looping */
2451 } else {
2452 /* Not valid yet, just exit and wait */
2453 rc = -EINVAL;
2454 goto out;
2455 }
2456 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements,
2457 &peek_sw_cq_cons,
2458 1, &peek_flags);
2459 }
2460 dev_err(&cq->hwq.pdev->dev,
2461 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2462 cq_cons, qp->id, swq_last, cqe_sq_cons);
2463 rc = -EINVAL;
2464 }
2465 out:
2466 return rc;
2467 }
2468
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)2469 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2470 struct cq_req *hwcqe,
2471 struct bnxt_qplib_cqe **pcqe, int *budget,
2472 u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2473 {
2474 struct bnxt_qplib_swq *swq;
2475 struct bnxt_qplib_cqe *cqe;
2476 struct bnxt_qplib_qp *qp;
2477 struct bnxt_qplib_q *sq;
2478 u32 cqe_sq_cons;
2479 int rc = 0;
2480
2481 qp = (struct bnxt_qplib_qp *)((unsigned long)
2482 le64_to_cpu(hwcqe->qp_handle));
2483 if (!qp) {
2484 dev_err(&cq->hwq.pdev->dev,
2485 "FP: Process Req qp is NULL\n");
2486 return -EINVAL;
2487 }
2488 sq = &qp->sq;
2489
2490 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_wqe;
2491 if (qp->sq.flushed) {
2492 dev_dbg(&cq->hwq.pdev->dev,
2493 "%s: QP in Flush QP = %p\n", __func__, qp);
2494 goto done;
2495 }
2496 /* Require to walk the sq's swq to fabricate CQEs for all previously
2497 * signaled SWQEs due to CQE aggregation from the current sq cons
2498 * to the cqe_sq_cons
2499 */
2500 cqe = *pcqe;
2501 while (*budget) {
2502 if (sq->swq_last == cqe_sq_cons)
2503 /* Done */
2504 break;
2505
2506 swq = &sq->swq[sq->swq_last];
2507 memset(cqe, 0, sizeof(*cqe));
2508 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2509 cqe->qp_handle = (u64)(unsigned long)qp;
2510 cqe->src_qp = qp->id;
2511 cqe->wr_id = swq->wr_id;
2512 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2513 goto skip;
2514 cqe->type = swq->type;
2515
2516 /* For the last CQE, check for status. For errors, regardless
2517 * of the request being signaled or not, it must complete with
2518 * the hwcqe error status
2519 */
2520 if (swq->next_idx == cqe_sq_cons &&
2521 hwcqe->status != CQ_REQ_STATUS_OK) {
2522 cqe->status = hwcqe->status;
2523 dev_err(&cq->hwq.pdev->dev,
2524 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2525 sq->swq_last, cqe->wr_id, cqe->status);
2526 cqe++;
2527 (*budget)--;
2528 bnxt_qplib_mark_qp_error(qp);
2529 /* Add qp to flush list of the CQ */
2530 bnxt_qplib_add_flush_qp(qp);
2531 } else {
2532 /* Before we complete, do WA 9060 */
2533 if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2534 cqe_sq_cons)) {
2535 *lib_qp = qp;
2536 goto out;
2537 }
2538 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2539 cqe->status = CQ_REQ_STATUS_OK;
2540 cqe++;
2541 (*budget)--;
2542 }
2543 }
2544 skip:
2545 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2546 swq->slots, &sq->dbinfo.flags);
2547 sq->swq_last = swq->next_idx;
2548 if (sq->single)
2549 break;
2550 }
2551 out:
2552 *pcqe = cqe;
2553 if (sq->swq_last != cqe_sq_cons) {
2554 /* Out of budget */
2555 rc = -EAGAIN;
2556 goto done;
2557 }
2558 /*
2559 * Back to normal completion mode only after it has completed all of
2560 * the WC for this CQE
2561 */
2562 sq->single = false;
2563 done:
2564 return rc;
2565 }
2566
bnxt_qplib_release_srqe(struct bnxt_qplib_srq * srq,u32 tag)2567 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2568 {
2569 spin_lock(&srq->hwq.lock);
2570 srq->swq[srq->last_idx].next_idx = (int)tag;
2571 srq->last_idx = (int)tag;
2572 srq->swq[srq->last_idx].next_idx = -1;
2573 bnxt_qplib_hwq_incr_cons(srq->hwq.max_elements, &srq->hwq.cons,
2574 srq->dbinfo.max_slot, &srq->dbinfo.flags);
2575 spin_unlock(&srq->hwq.lock);
2576 }
2577
bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq * cq,struct cq_res_rc * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2578 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2579 struct cq_res_rc *hwcqe,
2580 struct bnxt_qplib_cqe **pcqe,
2581 int *budget)
2582 {
2583 struct bnxt_qplib_srq *srq;
2584 struct bnxt_qplib_cqe *cqe;
2585 struct bnxt_qplib_qp *qp;
2586 struct bnxt_qplib_q *rq;
2587 u32 wr_id_idx;
2588
2589 qp = (struct bnxt_qplib_qp *)((unsigned long)
2590 le64_to_cpu(hwcqe->qp_handle));
2591 if (!qp) {
2592 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2593 return -EINVAL;
2594 }
2595 if (qp->rq.flushed) {
2596 dev_dbg(&cq->hwq.pdev->dev,
2597 "%s: QP in Flush QP = %p\n", __func__, qp);
2598 return 0;
2599 }
2600
2601 cqe = *pcqe;
2602 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2603 cqe->length = le32_to_cpu(hwcqe->length);
2604 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2605 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2606 cqe->flags = le16_to_cpu(hwcqe->flags);
2607 cqe->status = hwcqe->status;
2608 cqe->qp_handle = (u64)(unsigned long)qp;
2609
2610 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2611 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2612 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2613 srq = qp->srq;
2614 if (!srq)
2615 return -EINVAL;
2616 if (wr_id_idx >= srq->hwq.max_elements) {
2617 dev_err(&cq->hwq.pdev->dev,
2618 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2619 wr_id_idx, srq->hwq.max_elements);
2620 return -EINVAL;
2621 }
2622 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2623 bnxt_qplib_release_srqe(srq, wr_id_idx);
2624 cqe++;
2625 (*budget)--;
2626 *pcqe = cqe;
2627 } else {
2628 struct bnxt_qplib_swq *swq;
2629
2630 rq = &qp->rq;
2631 if (wr_id_idx > (rq->max_wqe - 1)) {
2632 dev_err(&cq->hwq.pdev->dev,
2633 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2634 wr_id_idx, rq->max_wqe);
2635 return -EINVAL;
2636 }
2637 if (wr_id_idx != rq->swq_last)
2638 return -EINVAL;
2639 swq = &rq->swq[rq->swq_last];
2640 cqe->wr_id = swq->wr_id;
2641 cqe++;
2642 (*budget)--;
2643 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2644 swq->slots, &rq->dbinfo.flags);
2645 rq->swq_last = swq->next_idx;
2646 *pcqe = cqe;
2647
2648 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2649 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2650 /* Add qp to flush list of the CQ */
2651 bnxt_qplib_add_flush_qp(qp);
2652 }
2653 }
2654
2655 return 0;
2656 }
2657
bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq * cq,struct cq_res_ud * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2658 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2659 struct cq_res_ud *hwcqe,
2660 struct bnxt_qplib_cqe **pcqe,
2661 int *budget)
2662 {
2663 struct bnxt_qplib_srq *srq;
2664 struct bnxt_qplib_cqe *cqe;
2665 struct bnxt_qplib_qp *qp;
2666 struct bnxt_qplib_q *rq;
2667 u32 wr_id_idx;
2668
2669 qp = (struct bnxt_qplib_qp *)((unsigned long)
2670 le64_to_cpu(hwcqe->qp_handle));
2671 if (!qp) {
2672 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2673 return -EINVAL;
2674 }
2675 if (qp->rq.flushed) {
2676 dev_dbg(&cq->hwq.pdev->dev,
2677 "%s: QP in Flush QP = %p\n", __func__, qp);
2678 return 0;
2679 }
2680 cqe = *pcqe;
2681 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2682 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2683 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2684 cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2685 cqe->flags = le16_to_cpu(hwcqe->flags);
2686 cqe->status = hwcqe->status;
2687 cqe->qp_handle = (u64)(unsigned long)qp;
2688 /*FIXME: Endianness fix needed for smace */
2689 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2690 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2691 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2692 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2693 ((le32_to_cpu(
2694 hwcqe->src_qp_high_srq_or_rq_wr_id) &
2695 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2696
2697 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2698 srq = qp->srq;
2699 if (!srq)
2700 return -EINVAL;
2701
2702 if (wr_id_idx >= srq->hwq.max_elements) {
2703 dev_err(&cq->hwq.pdev->dev,
2704 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2705 wr_id_idx, srq->hwq.max_elements);
2706 return -EINVAL;
2707 }
2708 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2709 bnxt_qplib_release_srqe(srq, wr_id_idx);
2710 cqe++;
2711 (*budget)--;
2712 *pcqe = cqe;
2713 } else {
2714 struct bnxt_qplib_swq *swq;
2715
2716 rq = &qp->rq;
2717 if (wr_id_idx > (rq->max_wqe - 1)) {
2718 dev_err(&cq->hwq.pdev->dev,
2719 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2720 wr_id_idx, rq->max_wqe);
2721 return -EINVAL;
2722 }
2723
2724 if (rq->swq_last != wr_id_idx)
2725 return -EINVAL;
2726 swq = &rq->swq[rq->swq_last];
2727 cqe->wr_id = swq->wr_id;
2728 cqe++;
2729 (*budget)--;
2730 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2731 swq->slots, &rq->dbinfo.flags);
2732 rq->swq_last = swq->next_idx;
2733 *pcqe = cqe;
2734
2735 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2736 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2737 /* Add qp to flush list of the CQ */
2738 bnxt_qplib_add_flush_qp(qp);
2739 }
2740 }
2741
2742 return 0;
2743 }
2744
bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq * cq)2745 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2746 {
2747 struct cq_base *hw_cqe;
2748 bool rc = true;
2749
2750 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
2751 /* Check for Valid bit. If the CQE is valid, return false */
2752 rc = !CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags);
2753 return rc;
2754 }
2755
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)2756 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2757 struct cq_res_raweth_qp1 *hwcqe,
2758 struct bnxt_qplib_cqe **pcqe,
2759 int *budget)
2760 {
2761 struct bnxt_qplib_qp *qp;
2762 struct bnxt_qplib_q *rq;
2763 struct bnxt_qplib_srq *srq;
2764 struct bnxt_qplib_cqe *cqe;
2765 u32 wr_id_idx;
2766
2767 qp = (struct bnxt_qplib_qp *)((unsigned long)
2768 le64_to_cpu(hwcqe->qp_handle));
2769 if (!qp) {
2770 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2771 return -EINVAL;
2772 }
2773 if (qp->rq.flushed) {
2774 dev_dbg(&cq->hwq.pdev->dev,
2775 "%s: QP in Flush QP = %p\n", __func__, qp);
2776 return 0;
2777 }
2778 cqe = *pcqe;
2779 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2780 cqe->flags = le16_to_cpu(hwcqe->flags);
2781 cqe->qp_handle = (u64)(unsigned long)qp;
2782
2783 wr_id_idx =
2784 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2785 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2786 cqe->src_qp = qp->id;
2787 if (qp->id == 1 && !cqe->length) {
2788 /* Add workaround for the length misdetection */
2789 cqe->length = 296;
2790 } else {
2791 cqe->length = le16_to_cpu(hwcqe->length);
2792 }
2793 cqe->pkey_index = qp->pkey_index;
2794 memcpy(cqe->smac, qp->smac, 6);
2795
2796 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2797 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2798 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2799
2800 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2801 srq = qp->srq;
2802 if (!srq) {
2803 dev_err(&cq->hwq.pdev->dev,
2804 "FP: SRQ used but not defined??\n");
2805 return -EINVAL;
2806 }
2807 if (wr_id_idx >= srq->hwq.max_elements) {
2808 dev_err(&cq->hwq.pdev->dev,
2809 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2810 wr_id_idx, srq->hwq.max_elements);
2811 return -EINVAL;
2812 }
2813 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2814 bnxt_qplib_release_srqe(srq, wr_id_idx);
2815 cqe++;
2816 (*budget)--;
2817 *pcqe = cqe;
2818 } else {
2819 struct bnxt_qplib_swq *swq;
2820
2821 rq = &qp->rq;
2822 if (wr_id_idx > (rq->max_wqe - 1)) {
2823 dev_err(&cq->hwq.pdev->dev,
2824 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2825 wr_id_idx, rq->max_wqe);
2826 return -EINVAL;
2827 }
2828 if (rq->swq_last != wr_id_idx)
2829 return -EINVAL;
2830 swq = &rq->swq[rq->swq_last];
2831 cqe->wr_id = swq->wr_id;
2832 cqe++;
2833 (*budget)--;
2834 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2835 swq->slots, &rq->dbinfo.flags);
2836 rq->swq_last = swq->next_idx;
2837 *pcqe = cqe;
2838
2839 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2840 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2841 /* Add qp to flush list of the CQ */
2842 bnxt_qplib_add_flush_qp(qp);
2843 }
2844 }
2845
2846 return 0;
2847 }
2848
bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq * cq,struct cq_terminal * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2849 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2850 struct cq_terminal *hwcqe,
2851 struct bnxt_qplib_cqe **pcqe,
2852 int *budget)
2853 {
2854 struct bnxt_qplib_qp *qp;
2855 struct bnxt_qplib_q *sq, *rq;
2856 struct bnxt_qplib_cqe *cqe;
2857 u32 swq_last = 0, cqe_cons;
2858 int rc = 0;
2859
2860 /* Check the Status */
2861 if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2862 dev_warn(&cq->hwq.pdev->dev,
2863 "FP: CQ Process Terminal Error status = 0x%x\n",
2864 hwcqe->status);
2865
2866 qp = (struct bnxt_qplib_qp *)((unsigned long)
2867 le64_to_cpu(hwcqe->qp_handle));
2868 if (!qp)
2869 return -EINVAL;
2870
2871 /* Must block new posting of SQ and RQ */
2872 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2873
2874 sq = &qp->sq;
2875 rq = &qp->rq;
2876
2877 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
2878 if (cqe_cons == 0xFFFF)
2879 goto do_rq;
2880 cqe_cons %= sq->max_wqe;
2881
2882 if (qp->sq.flushed) {
2883 dev_dbg(&cq->hwq.pdev->dev,
2884 "%s: QP in Flush QP = %p\n", __func__, qp);
2885 goto sq_done;
2886 }
2887
2888 /* Terminal CQE can also include aggregated successful CQEs prior.
2889 * So we must complete all CQEs from the current sq's cons to the
2890 * cq_cons with status OK
2891 */
2892 cqe = *pcqe;
2893 while (*budget) {
2894 swq_last = sq->swq_last;
2895 if (swq_last == cqe_cons)
2896 break;
2897 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2898 memset(cqe, 0, sizeof(*cqe));
2899 cqe->status = CQ_REQ_STATUS_OK;
2900 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2901 cqe->qp_handle = (u64)(unsigned long)qp;
2902 cqe->src_qp = qp->id;
2903 cqe->wr_id = sq->swq[swq_last].wr_id;
2904 cqe->type = sq->swq[swq_last].type;
2905 cqe++;
2906 (*budget)--;
2907 }
2908 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2909 sq->swq[swq_last].slots, &sq->dbinfo.flags);
2910 sq->swq_last = sq->swq[swq_last].next_idx;
2911 }
2912 *pcqe = cqe;
2913 if (!(*budget) && swq_last != cqe_cons) {
2914 /* Out of budget */
2915 rc = -EAGAIN;
2916 goto sq_done;
2917 }
2918 sq_done:
2919 if (rc)
2920 return rc;
2921 do_rq:
2922 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
2923 if (cqe_cons == 0xFFFF) {
2924 goto done;
2925 } else if (cqe_cons > rq->max_wqe - 1) {
2926 dev_err(&cq->hwq.pdev->dev,
2927 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
2928 cqe_cons, rq->max_wqe);
2929 rc = -EINVAL;
2930 goto done;
2931 }
2932
2933 if (qp->rq.flushed) {
2934 dev_dbg(&cq->hwq.pdev->dev,
2935 "%s: QP in Flush QP = %p\n", __func__, qp);
2936 rc = 0;
2937 goto done;
2938 }
2939
2940 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
2941 * from the current rq->cons to the rq->prod regardless what the
2942 * rq->cons the terminal CQE indicates
2943 */
2944
2945 /* Add qp to flush list of the CQ */
2946 bnxt_qplib_add_flush_qp(qp);
2947 done:
2948 return rc;
2949 }
2950
bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq * cq,struct cq_cutoff * hwcqe)2951 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
2952 struct cq_cutoff *hwcqe)
2953 {
2954 /* Check the Status */
2955 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
2956 dev_err(&cq->hwq.pdev->dev,
2957 "FP: CQ Process Cutoff Error status = 0x%x\n",
2958 hwcqe->status);
2959 return -EINVAL;
2960 }
2961 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
2962 wake_up_interruptible(&cq->waitq);
2963
2964 return 0;
2965 }
2966
bnxt_qplib_process_flush_list(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes)2967 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
2968 struct bnxt_qplib_cqe *cqe,
2969 int num_cqes)
2970 {
2971 struct bnxt_qplib_qp *qp = NULL;
2972 u32 budget = num_cqes;
2973 unsigned long flags;
2974
2975 spin_lock_irqsave(&cq->flush_lock, flags);
2976 list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
2977 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
2978 __flush_sq(&qp->sq, qp, &cqe, &budget);
2979 }
2980
2981 list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
2982 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
2983 __flush_rq(&qp->rq, qp, &cqe, &budget);
2984 }
2985 spin_unlock_irqrestore(&cq->flush_lock, flags);
2986
2987 return num_cqes - budget;
2988 }
2989
bnxt_qplib_poll_cq(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes,struct bnxt_qplib_qp ** lib_qp)2990 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
2991 int num_cqes, struct bnxt_qplib_qp **lib_qp)
2992 {
2993 struct cq_base *hw_cqe;
2994 int budget, rc = 0;
2995 u32 hw_polled = 0;
2996 u8 type;
2997
2998 budget = num_cqes;
2999
3000 while (budget) {
3001 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
3002
3003 /* Check for Valid bit */
3004 if (!CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags))
3005 break;
3006
3007 /*
3008 * The valid test of the entry must be done first before
3009 * reading any further.
3010 */
3011 dma_rmb();
3012 /* From the device's respective CQE format to qplib_wc*/
3013 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
3014 switch (type) {
3015 case CQ_BASE_CQE_TYPE_REQ:
3016 rc = bnxt_qplib_cq_process_req(cq,
3017 (struct cq_req *)hw_cqe,
3018 &cqe, &budget,
3019 cq->hwq.cons, lib_qp);
3020 break;
3021 case CQ_BASE_CQE_TYPE_RES_RC:
3022 rc = bnxt_qplib_cq_process_res_rc(cq,
3023 (struct cq_res_rc *)
3024 hw_cqe, &cqe,
3025 &budget);
3026 break;
3027 case CQ_BASE_CQE_TYPE_RES_UD:
3028 rc = bnxt_qplib_cq_process_res_ud
3029 (cq, (struct cq_res_ud *)hw_cqe, &cqe,
3030 &budget);
3031 break;
3032 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
3033 rc = bnxt_qplib_cq_process_res_raweth_qp1
3034 (cq, (struct cq_res_raweth_qp1 *)
3035 hw_cqe, &cqe, &budget);
3036 break;
3037 case CQ_BASE_CQE_TYPE_TERMINAL:
3038 rc = bnxt_qplib_cq_process_terminal
3039 (cq, (struct cq_terminal *)hw_cqe,
3040 &cqe, &budget);
3041 break;
3042 case CQ_BASE_CQE_TYPE_CUT_OFF:
3043 bnxt_qplib_cq_process_cutoff
3044 (cq, (struct cq_cutoff *)hw_cqe);
3045 /* Done processing this CQ */
3046 goto exit;
3047 default:
3048 dev_err(&cq->hwq.pdev->dev,
3049 "process_cq unknown type 0x%lx\n",
3050 hw_cqe->cqe_type_toggle &
3051 CQ_BASE_CQE_TYPE_MASK);
3052 rc = -EINVAL;
3053 break;
3054 }
3055 if (rc < 0) {
3056 if (rc == -EAGAIN)
3057 break;
3058 /* Error while processing the CQE, just skip to the
3059 * next one
3060 */
3061 if (type != CQ_BASE_CQE_TYPE_TERMINAL)
3062 dev_err(&cq->hwq.pdev->dev,
3063 "process_cqe error rc = 0x%x\n", rc);
3064 }
3065 hw_polled++;
3066 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements, &cq->hwq.cons,
3067 1, &cq->dbinfo.flags);
3068
3069 }
3070 if (hw_polled)
3071 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
3072 exit:
3073 return num_cqes - budget;
3074 }
3075
bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq * cq,u32 arm_type)3076 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3077 {
3078 if (arm_type)
3079 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3080 /* Using cq->arm_state variable to track whether to issue cq handler */
3081 atomic_set(&cq->arm_state, 1);
3082 }
3083
bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp * qp)3084 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3085 {
3086 flush_workqueue(qp->scq->nq->cqn_wq);
3087 if (qp->scq != qp->rcq)
3088 flush_workqueue(qp->rcq->nq->cqn_wq);
3089 }
3090