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 srq->dbinfo.flags = 0;
643 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
644 CMDQ_BASE_OPCODE_CREATE_SRQ,
645 sizeof(req));
646
647 /* Configure the request */
648 req.dpi = cpu_to_le32(srq->dpi->dpi);
649 req.srq_handle = cpu_to_le64((uintptr_t)srq);
650
651 req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
652 pbl = &srq->hwq.pbl[PBL_LVL_0];
653 pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
654 CMDQ_CREATE_SRQ_PG_SIZE_SFT);
655 pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
656 CMDQ_CREATE_SRQ_LVL_SFT;
657 req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
658 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
659 req.pd_id = cpu_to_le32(srq->pd->id);
660 req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
661
662 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
663 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
664 if (rc)
665 goto fail;
666
667 spin_lock_init(&srq->lock);
668 srq->start_idx = 0;
669 srq->last_idx = srq->hwq.max_elements - 1;
670 if (!srq->hwq.is_user) {
671 srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
672 GFP_KERNEL);
673 if (!srq->swq) {
674 rc = -ENOMEM;
675 goto fail;
676 }
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
682 srq->id = le32_to_cpu(resp.xid);
683 srq->dbinfo.hwq = &srq->hwq;
684 srq->dbinfo.xid = srq->id;
685 srq->dbinfo.db = srq->dpi->dbr;
686 srq->dbinfo.max_slot = 1;
687 srq->dbinfo.priv_db = res->dpi_tbl.priv_db;
688 if (srq->threshold)
689 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
690 srq->arm_req = false;
691
692 return 0;
693 fail:
694 bnxt_qplib_free_hwq(res, &srq->hwq);
695 kfree(srq->swq);
696
697 return rc;
698 }
699
bnxt_qplib_modify_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)700 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
701 struct bnxt_qplib_srq *srq)
702 {
703 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
704 u32 count;
705
706 count = __bnxt_qplib_get_avail(srq_hwq);
707 if (count > srq->threshold) {
708 srq->arm_req = false;
709 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
710 } else {
711 /* Deferred arming */
712 srq->arm_req = true;
713 }
714
715 return 0;
716 }
717
bnxt_qplib_query_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)718 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
719 struct bnxt_qplib_srq *srq)
720 {
721 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
722 struct creq_query_srq_resp resp = {};
723 struct bnxt_qplib_cmdqmsg msg = {};
724 struct bnxt_qplib_rcfw_sbuf sbuf;
725 struct creq_query_srq_resp_sb *sb;
726 struct cmdq_query_srq req = {};
727 int rc;
728
729 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
730 CMDQ_BASE_OPCODE_QUERY_SRQ,
731 sizeof(req));
732
733 /* Configure the request */
734 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
735 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
736 &sbuf.dma_addr, GFP_KERNEL);
737 if (!sbuf.sb)
738 return -ENOMEM;
739 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
740 req.srq_cid = cpu_to_le32(srq->id);
741 sb = sbuf.sb;
742 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
743 sizeof(resp), 0);
744 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
745 if (!rc)
746 srq->threshold = le16_to_cpu(sb->srq_limit);
747 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
748 sbuf.sb, sbuf.dma_addr);
749
750 return rc;
751 }
752
bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq * srq,struct bnxt_qplib_swqe * wqe)753 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
754 struct bnxt_qplib_swqe *wqe)
755 {
756 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
757 struct rq_wqe *srqe;
758 struct sq_sge *hw_sge;
759 u32 count = 0;
760 int i, next;
761
762 spin_lock(&srq_hwq->lock);
763 if (srq->start_idx == srq->last_idx) {
764 dev_err(&srq_hwq->pdev->dev,
765 "FP: SRQ (0x%x) is full!\n", srq->id);
766 spin_unlock(&srq_hwq->lock);
767 return -EINVAL;
768 }
769 next = srq->start_idx;
770 srq->start_idx = srq->swq[next].next_idx;
771 spin_unlock(&srq_hwq->lock);
772
773 srqe = bnxt_qplib_get_qe(srq_hwq, srq_hwq->prod, NULL);
774 memset(srqe, 0, srq->wqe_size);
775 /* Calculate wqe_size16 and data_len */
776 for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
777 i < wqe->num_sge; i++, hw_sge++) {
778 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
779 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
780 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
781 }
782 srqe->wqe_type = wqe->type;
783 srqe->flags = wqe->flags;
784 srqe->wqe_size = wqe->num_sge +
785 ((offsetof(typeof(*srqe), data) + 15) >> 4);
786 srqe->wr_id[0] = cpu_to_le32((u32)next);
787 srq->swq[next].wr_id = wqe->wr_id;
788
789 bnxt_qplib_hwq_incr_prod(&srq->dbinfo, srq_hwq, srq->dbinfo.max_slot);
790
791 spin_lock(&srq_hwq->lock);
792 count = __bnxt_qplib_get_avail(srq_hwq);
793 spin_unlock(&srq_hwq->lock);
794 /* Ring DB */
795 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
796 if (srq->arm_req == true && count > srq->threshold) {
797 srq->arm_req = false;
798 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
799 }
800
801 return 0;
802 }
803
804 /* QP */
805
bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q * que)806 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
807 {
808 int indx;
809
810 que->swq = kcalloc(que->max_sw_wqe, sizeof(*que->swq), GFP_KERNEL);
811 if (!que->swq)
812 return -ENOMEM;
813
814 que->swq_start = 0;
815 que->swq_last = que->max_sw_wqe - 1;
816 for (indx = 0; indx < que->max_sw_wqe; indx++)
817 que->swq[indx].next_idx = indx + 1;
818 que->swq[que->swq_last].next_idx = 0; /* Make it circular */
819 que->swq_last = 0;
820
821 return 0;
822 }
823
bnxt_qplib_create_qp1(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)824 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
825 {
826 struct bnxt_qplib_hwq_attr hwq_attr = {};
827 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
828 struct creq_create_qp1_resp resp = {};
829 struct bnxt_qplib_cmdqmsg msg = {};
830 struct bnxt_qplib_q *sq = &qp->sq;
831 struct bnxt_qplib_q *rq = &qp->rq;
832 struct cmdq_create_qp1 req = {};
833 struct bnxt_qplib_pbl *pbl;
834 u32 qp_flags = 0;
835 u8 pg_sz_lvl;
836 u32 tbl_indx;
837 int rc;
838
839 sq->dbinfo.flags = 0;
840 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
841 CMDQ_BASE_OPCODE_CREATE_QP1,
842 sizeof(req));
843 /* General */
844 req.type = qp->type;
845 req.dpi = cpu_to_le32(qp->dpi->dpi);
846 req.qp_handle = cpu_to_le64(qp->qp_handle);
847
848 /* SQ */
849 hwq_attr.res = res;
850 hwq_attr.sginfo = &sq->sg_info;
851 hwq_attr.stride = sizeof(struct sq_sge);
852 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, false);
853 hwq_attr.type = HWQ_TYPE_QUEUE;
854 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
855 if (rc)
856 return rc;
857
858 rc = bnxt_qplib_alloc_init_swq(sq);
859 if (rc)
860 goto fail_sq;
861
862 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
863 pbl = &sq->hwq.pbl[PBL_LVL_0];
864 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
865 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
866 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
867 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
868 req.sq_pg_size_sq_lvl = pg_sz_lvl;
869 req.sq_fwo_sq_sge =
870 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
871 CMDQ_CREATE_QP1_SQ_SGE_SFT);
872 req.scq_cid = cpu_to_le32(qp->scq->id);
873
874 /* RQ */
875 if (rq->max_wqe) {
876 rq->dbinfo.flags = 0;
877 hwq_attr.res = res;
878 hwq_attr.sginfo = &rq->sg_info;
879 hwq_attr.stride = sizeof(struct sq_sge);
880 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
881 hwq_attr.type = HWQ_TYPE_QUEUE;
882 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
883 if (rc)
884 goto sq_swq;
885 rc = bnxt_qplib_alloc_init_swq(rq);
886 if (rc)
887 goto fail_rq;
888 req.rq_size = cpu_to_le32(rq->max_wqe);
889 pbl = &rq->hwq.pbl[PBL_LVL_0];
890 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
891 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
892 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
893 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
894 req.rq_pg_size_rq_lvl = pg_sz_lvl;
895 req.rq_fwo_rq_sge =
896 cpu_to_le16((rq->max_sge &
897 CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
898 CMDQ_CREATE_QP1_RQ_SGE_SFT);
899 }
900 req.rcq_cid = cpu_to_le32(qp->rcq->id);
901 /* Header buffer - allow hdr_buf pass in */
902 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
903 if (rc) {
904 rc = -ENOMEM;
905 goto rq_rwq;
906 }
907 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
908 req.qp_flags = cpu_to_le32(qp_flags);
909 req.pd_id = cpu_to_le32(qp->pd->id);
910
911 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
912 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
913 if (rc)
914 goto fail;
915
916 qp->id = le32_to_cpu(resp.xid);
917 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
918 qp->cctx = res->cctx;
919 sq->dbinfo.hwq = &sq->hwq;
920 sq->dbinfo.xid = qp->id;
921 sq->dbinfo.db = qp->dpi->dbr;
922 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
923 if (rq->max_wqe) {
924 rq->dbinfo.hwq = &rq->hwq;
925 rq->dbinfo.xid = qp->id;
926 rq->dbinfo.db = qp->dpi->dbr;
927 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
928 }
929 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
930 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
931 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
932
933 return 0;
934
935 fail:
936 bnxt_qplib_free_qp_hdr_buf(res, qp);
937 rq_rwq:
938 kfree(rq->swq);
939 fail_rq:
940 bnxt_qplib_free_hwq(res, &rq->hwq);
941 sq_swq:
942 kfree(sq->swq);
943 fail_sq:
944 bnxt_qplib_free_hwq(res, &sq->hwq);
945 return rc;
946 }
947
bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp * qp,int size)948 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
949 {
950 struct bnxt_qplib_hwq *hwq;
951 struct bnxt_qplib_q *sq;
952 u64 fpsne, psn_pg;
953 u16 indx_pad = 0;
954
955 sq = &qp->sq;
956 hwq = &sq->hwq;
957 /* First psn entry */
958 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
959 if (!IS_ALIGNED(fpsne, PAGE_SIZE))
960 indx_pad = (fpsne & ~PAGE_MASK) / size;
961 hwq->pad_pgofft = indx_pad;
962 hwq->pad_pg = (u64 *)psn_pg;
963 hwq->pad_stride = size;
964 }
965
bnxt_qplib_create_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)966 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
967 {
968 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
969 struct bnxt_qplib_hwq_attr hwq_attr = {};
970 struct bnxt_qplib_sg_info sginfo = {};
971 struct creq_create_qp_resp resp = {};
972 struct bnxt_qplib_cmdqmsg msg = {};
973 struct bnxt_qplib_q *sq = &qp->sq;
974 struct bnxt_qplib_q *rq = &qp->rq;
975 struct cmdq_create_qp req = {};
976 int rc, req_size, psn_sz = 0;
977 struct bnxt_qplib_hwq *xrrq;
978 struct bnxt_qplib_pbl *pbl;
979 u32 qp_flags = 0;
980 u8 pg_sz_lvl;
981 u32 tbl_indx;
982 u16 nsge;
983
984 qp->is_host_msn_tbl = _is_host_msn_table(res->dattr->dev_cap_flags2);
985 sq->dbinfo.flags = 0;
986 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
987 CMDQ_BASE_OPCODE_CREATE_QP,
988 sizeof(req));
989
990 /* General */
991 req.type = qp->type;
992 req.dpi = cpu_to_le32(qp->dpi->dpi);
993 req.qp_handle = cpu_to_le64(qp->qp_handle);
994
995 /* SQ */
996 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
997 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(res->cctx) ?
998 sizeof(struct sq_psn_search_ext) :
999 sizeof(struct sq_psn_search);
1000
1001 if (qp->is_host_msn_tbl) {
1002 psn_sz = sizeof(struct sq_msn_search);
1003 qp->msn = 0;
1004 }
1005 }
1006
1007 hwq_attr.res = res;
1008 hwq_attr.sginfo = &sq->sg_info;
1009 hwq_attr.stride = sizeof(struct sq_sge);
1010 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, true);
1011 hwq_attr.aux_stride = psn_sz;
1012 hwq_attr.aux_depth = psn_sz ? bnxt_qplib_set_sq_size(sq, qp->wqe_mode)
1013 : 0;
1014 /* Update msn tbl size */
1015 if (qp->is_host_msn_tbl && psn_sz) {
1016 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
1017 hwq_attr.aux_depth =
1018 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1019 else
1020 hwq_attr.aux_depth =
1021 roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)) / 2;
1022 qp->msn_tbl_sz = hwq_attr.aux_depth;
1023 qp->msn = 0;
1024 }
1025
1026 hwq_attr.type = HWQ_TYPE_QUEUE;
1027 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
1028 if (rc)
1029 return rc;
1030
1031 if (!sq->hwq.is_user) {
1032 rc = bnxt_qplib_alloc_init_swq(sq);
1033 if (rc)
1034 goto fail_sq;
1035
1036 if (psn_sz)
1037 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1038 }
1039 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1040 pbl = &sq->hwq.pbl[PBL_LVL_0];
1041 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1042 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1043 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1044 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1045 req.sq_pg_size_sq_lvl = pg_sz_lvl;
1046 req.sq_fwo_sq_sge =
1047 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1048 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1049 req.scq_cid = cpu_to_le32(qp->scq->id);
1050
1051 /* RQ */
1052 if (!qp->srq) {
1053 rq->dbinfo.flags = 0;
1054 hwq_attr.res = res;
1055 hwq_attr.sginfo = &rq->sg_info;
1056 hwq_attr.stride = sizeof(struct sq_sge);
1057 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
1058 hwq_attr.aux_stride = 0;
1059 hwq_attr.aux_depth = 0;
1060 hwq_attr.type = HWQ_TYPE_QUEUE;
1061 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1062 if (rc)
1063 goto sq_swq;
1064 if (!rq->hwq.is_user) {
1065 rc = bnxt_qplib_alloc_init_swq(rq);
1066 if (rc)
1067 goto fail_rq;
1068 }
1069
1070 req.rq_size = cpu_to_le32(rq->max_wqe);
1071 pbl = &rq->hwq.pbl[PBL_LVL_0];
1072 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1073 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1074 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1075 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1076 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1077 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1078 6 : rq->max_sge;
1079 req.rq_fwo_rq_sge =
1080 cpu_to_le16(((nsge &
1081 CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1082 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1083 } else {
1084 /* SRQ */
1085 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1086 req.srq_cid = cpu_to_le32(qp->srq->id);
1087 }
1088 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1089
1090 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1091 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1092 if (qp->sig_type)
1093 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1094 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1095 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1096 if (_is_ext_stats_supported(res->dattr->dev_cap_flags) && !res->is_vf)
1097 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1098
1099 req.qp_flags = cpu_to_le32(qp_flags);
1100
1101 /* ORRQ and IRRQ */
1102 if (psn_sz) {
1103 xrrq = &qp->orrq;
1104 xrrq->max_elements =
1105 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1106 req_size = xrrq->max_elements *
1107 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1108 req_size &= ~(PAGE_SIZE - 1);
1109 sginfo.pgsize = req_size;
1110 sginfo.pgshft = PAGE_SHIFT;
1111
1112 hwq_attr.res = res;
1113 hwq_attr.sginfo = &sginfo;
1114 hwq_attr.depth = xrrq->max_elements;
1115 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1116 hwq_attr.aux_stride = 0;
1117 hwq_attr.aux_depth = 0;
1118 hwq_attr.type = HWQ_TYPE_CTX;
1119 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1120 if (rc)
1121 goto rq_swq;
1122 pbl = &xrrq->pbl[PBL_LVL_0];
1123 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1124
1125 xrrq = &qp->irrq;
1126 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1127 qp->max_dest_rd_atomic);
1128 req_size = xrrq->max_elements *
1129 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1130 req_size &= ~(PAGE_SIZE - 1);
1131 sginfo.pgsize = req_size;
1132 hwq_attr.depth = xrrq->max_elements;
1133 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1134 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1135 if (rc)
1136 goto fail_orrq;
1137
1138 pbl = &xrrq->pbl[PBL_LVL_0];
1139 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1140 }
1141 req.pd_id = cpu_to_le32(qp->pd->id);
1142
1143 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1144 sizeof(resp), 0);
1145 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1146 if (rc)
1147 goto fail;
1148
1149 qp->id = le32_to_cpu(resp.xid);
1150 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1151 INIT_LIST_HEAD(&qp->sq_flush);
1152 INIT_LIST_HEAD(&qp->rq_flush);
1153 qp->cctx = res->cctx;
1154 sq->dbinfo.hwq = &sq->hwq;
1155 sq->dbinfo.xid = qp->id;
1156 sq->dbinfo.db = qp->dpi->dbr;
1157 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1158 if (rq->max_wqe) {
1159 rq->dbinfo.hwq = &rq->hwq;
1160 rq->dbinfo.xid = qp->id;
1161 rq->dbinfo.db = qp->dpi->dbr;
1162 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1163 }
1164 spin_lock_bh(&rcfw->tbl_lock);
1165 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1166 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1167 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
1168 spin_unlock_bh(&rcfw->tbl_lock);
1169
1170 return 0;
1171 fail:
1172 bnxt_qplib_free_hwq(res, &qp->irrq);
1173 fail_orrq:
1174 bnxt_qplib_free_hwq(res, &qp->orrq);
1175 rq_swq:
1176 kfree(rq->swq);
1177 fail_rq:
1178 bnxt_qplib_free_hwq(res, &rq->hwq);
1179 sq_swq:
1180 kfree(sq->swq);
1181 fail_sq:
1182 bnxt_qplib_free_hwq(res, &sq->hwq);
1183 return rc;
1184 }
1185
__modify_flags_from_init_state(struct bnxt_qplib_qp * qp)1186 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1187 {
1188 switch (qp->state) {
1189 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1190 /* INIT->RTR, configure the path_mtu to the default
1191 * 2048 if not being requested
1192 */
1193 if (!(qp->modify_flags &
1194 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1195 qp->modify_flags |=
1196 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1197 qp->path_mtu =
1198 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1199 }
1200 qp->modify_flags &=
1201 ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
1202 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1203 if (qp->max_dest_rd_atomic < 1)
1204 qp->max_dest_rd_atomic = 1;
1205 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1206 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1207 if (!(qp->modify_flags &
1208 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1209 qp->modify_flags |=
1210 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1211 qp->ah.sgid_index = 0;
1212 }
1213 break;
1214 default:
1215 break;
1216 }
1217 }
1218
__modify_flags_from_rtr_state(struct bnxt_qplib_qp * qp)1219 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1220 {
1221 switch (qp->state) {
1222 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1223 /* Bono FW requires the max_rd_atomic to be >= 1 */
1224 if (qp->max_rd_atomic < 1)
1225 qp->max_rd_atomic = 1;
1226 /* Bono FW does not allow PKEY_INDEX,
1227 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1228 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1229 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1230 * modification
1231 */
1232 qp->modify_flags &=
1233 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1234 CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1235 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1236 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1237 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1238 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1239 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1240 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1241 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1242 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1243 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1244 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1245 break;
1246 default:
1247 break;
1248 }
1249 }
1250
__filter_modify_flags(struct bnxt_qplib_qp * qp)1251 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1252 {
1253 switch (qp->cur_qp_state) {
1254 case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1255 break;
1256 case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1257 __modify_flags_from_init_state(qp);
1258 break;
1259 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1260 __modify_flags_from_rtr_state(qp);
1261 break;
1262 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1263 break;
1264 case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1265 break;
1266 case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1267 break;
1268 case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1269 break;
1270 default:
1271 break;
1272 }
1273 }
1274
bnxt_qplib_modify_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1275 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1276 {
1277 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1278 struct creq_modify_qp_resp resp = {};
1279 struct bnxt_qplib_cmdqmsg msg = {};
1280 struct cmdq_modify_qp req = {};
1281 u32 temp32[4];
1282 u32 bmask;
1283 int rc;
1284
1285 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1286 CMDQ_BASE_OPCODE_MODIFY_QP,
1287 sizeof(req));
1288
1289 /* Filter out the qp_attr_mask based on the state->new transition */
1290 __filter_modify_flags(qp);
1291 bmask = qp->modify_flags;
1292 req.modify_mask = cpu_to_le32(qp->modify_flags);
1293 req.qp_cid = cpu_to_le32(qp->id);
1294 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1295 req.network_type_en_sqd_async_notify_new_state =
1296 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1297 (qp->en_sqd_async_notify ?
1298 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1299 }
1300 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1301
1302 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1303 req.access = qp->access;
1304
1305 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1306 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1307
1308 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1309 req.qkey = cpu_to_le32(qp->qkey);
1310
1311 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1312 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1313 req.dgid[0] = cpu_to_le32(temp32[0]);
1314 req.dgid[1] = cpu_to_le32(temp32[1]);
1315 req.dgid[2] = cpu_to_le32(temp32[2]);
1316 req.dgid[3] = cpu_to_le32(temp32[3]);
1317 }
1318 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1319 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1320
1321 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1322 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1323 [qp->ah.sgid_index]);
1324
1325 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1326 req.hop_limit = qp->ah.hop_limit;
1327
1328 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1329 req.traffic_class = qp->ah.traffic_class;
1330
1331 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1332 memcpy(req.dest_mac, qp->ah.dmac, 6);
1333
1334 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1335 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1336
1337 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1338 req.timeout = qp->timeout;
1339
1340 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1341 req.retry_cnt = qp->retry_cnt;
1342
1343 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1344 req.rnr_retry = qp->rnr_retry;
1345
1346 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1347 req.min_rnr_timer = qp->min_rnr_timer;
1348
1349 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1350 req.rq_psn = cpu_to_le32(qp->rq.psn);
1351
1352 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1353 req.sq_psn = cpu_to_le32(qp->sq.psn);
1354
1355 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1356 req.max_rd_atomic =
1357 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1358
1359 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1360 req.max_dest_rd_atomic =
1361 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1362
1363 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1364 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1365 req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1366 req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1367 req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1368 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1369 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1370
1371 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);
1372
1373 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
1374 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1375 if (rc)
1376 return rc;
1377 qp->cur_qp_state = qp->state;
1378 return 0;
1379 }
1380
bnxt_qplib_query_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1381 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1382 {
1383 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1384 struct creq_query_qp_resp resp = {};
1385 struct bnxt_qplib_cmdqmsg msg = {};
1386 struct bnxt_qplib_rcfw_sbuf sbuf;
1387 struct creq_query_qp_resp_sb *sb;
1388 struct cmdq_query_qp req = {};
1389 u32 temp32[4];
1390 int i, rc;
1391
1392 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
1393 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
1394 &sbuf.dma_addr, GFP_KERNEL);
1395 if (!sbuf.sb)
1396 return -ENOMEM;
1397 sb = sbuf.sb;
1398
1399 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1400 CMDQ_BASE_OPCODE_QUERY_QP,
1401 sizeof(req));
1402
1403 req.qp_cid = cpu_to_le32(qp->id);
1404 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
1405 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
1406 sizeof(resp), 0);
1407 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1408 if (rc)
1409 goto bail;
1410 /* Extract the context from the side buffer */
1411 qp->state = sb->en_sqd_async_notify_state &
1412 CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1413 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1414 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY;
1415 qp->access = sb->access;
1416 qp->pkey_index = le16_to_cpu(sb->pkey);
1417 qp->qkey = le32_to_cpu(sb->qkey);
1418
1419 temp32[0] = le32_to_cpu(sb->dgid[0]);
1420 temp32[1] = le32_to_cpu(sb->dgid[1]);
1421 temp32[2] = le32_to_cpu(sb->dgid[2]);
1422 temp32[3] = le32_to_cpu(sb->dgid[3]);
1423 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1424
1425 qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1426
1427 qp->ah.sgid_index = 0;
1428 for (i = 0; i < res->sgid_tbl.max; i++) {
1429 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1430 qp->ah.sgid_index = i;
1431 break;
1432 }
1433 }
1434 if (i == res->sgid_tbl.max)
1435 dev_warn(&res->pdev->dev, "SGID not found??\n");
1436
1437 qp->ah.hop_limit = sb->hop_limit;
1438 qp->ah.traffic_class = sb->traffic_class;
1439 memcpy(qp->ah.dmac, sb->dest_mac, 6);
1440 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1441 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1442 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1443 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1444 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1445 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1446 qp->timeout = sb->timeout;
1447 qp->retry_cnt = sb->retry_cnt;
1448 qp->rnr_retry = sb->rnr_retry;
1449 qp->min_rnr_timer = sb->min_rnr_timer;
1450 qp->rq.psn = le32_to_cpu(sb->rq_psn);
1451 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1452 qp->sq.psn = le32_to_cpu(sb->sq_psn);
1453 qp->max_dest_rd_atomic =
1454 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1455 qp->sq.max_wqe = qp->sq.hwq.max_elements;
1456 qp->rq.max_wqe = qp->rq.hwq.max_elements;
1457 qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1458 qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1459 qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1460 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1461 memcpy(qp->smac, sb->src_mac, 6);
1462 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1463 qp->port_id = le16_to_cpu(sb->port_id);
1464 bail:
1465 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
1466 sbuf.sb, sbuf.dma_addr);
1467 return rc;
1468 }
1469
__clean_cq(struct bnxt_qplib_cq * cq,u64 qp)1470 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1471 {
1472 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1473 u32 peek_flags, peek_cons;
1474 struct cq_base *hw_cqe;
1475 int i;
1476
1477 peek_flags = cq->dbinfo.flags;
1478 peek_cons = cq_hwq->cons;
1479 for (i = 0; i < cq_hwq->max_elements; i++) {
1480 hw_cqe = bnxt_qplib_get_qe(cq_hwq, peek_cons, NULL);
1481 if (!CQE_CMP_VALID(hw_cqe, peek_flags))
1482 continue;
1483 /*
1484 * The valid test of the entry must be done first before
1485 * reading any further.
1486 */
1487 dma_rmb();
1488 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1489 case CQ_BASE_CQE_TYPE_REQ:
1490 case CQ_BASE_CQE_TYPE_TERMINAL:
1491 {
1492 struct cq_req *cqe = (struct cq_req *)hw_cqe;
1493
1494 if (qp == le64_to_cpu(cqe->qp_handle))
1495 cqe->qp_handle = 0;
1496 break;
1497 }
1498 case CQ_BASE_CQE_TYPE_RES_RC:
1499 case CQ_BASE_CQE_TYPE_RES_UD:
1500 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1501 {
1502 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1503
1504 if (qp == le64_to_cpu(cqe->qp_handle))
1505 cqe->qp_handle = 0;
1506 break;
1507 }
1508 default:
1509 break;
1510 }
1511 bnxt_qplib_hwq_incr_cons(cq_hwq->max_elements, &peek_cons,
1512 1, &peek_flags);
1513 }
1514 }
1515
bnxt_qplib_destroy_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1516 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1517 struct bnxt_qplib_qp *qp)
1518 {
1519 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1520 struct creq_destroy_qp_resp resp = {};
1521 struct bnxt_qplib_cmdqmsg msg = {};
1522 struct cmdq_destroy_qp req = {};
1523 u32 tbl_indx;
1524 int rc;
1525
1526 spin_lock_bh(&rcfw->tbl_lock);
1527 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1528 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1529 rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1530 spin_unlock_bh(&rcfw->tbl_lock);
1531
1532 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1533 CMDQ_BASE_OPCODE_DESTROY_QP,
1534 sizeof(req));
1535
1536 req.qp_cid = cpu_to_le32(qp->id);
1537 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1538 sizeof(resp), 0);
1539 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1540 if (rc) {
1541 spin_lock_bh(&rcfw->tbl_lock);
1542 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1543 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1544 spin_unlock_bh(&rcfw->tbl_lock);
1545 return rc;
1546 }
1547
1548 return 0;
1549 }
1550
bnxt_qplib_free_qp_res(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1551 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1552 struct bnxt_qplib_qp *qp)
1553 {
1554 bnxt_qplib_free_qp_hdr_buf(res, qp);
1555 bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1556 kfree(qp->sq.swq);
1557
1558 bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1559 kfree(qp->rq.swq);
1560
1561 if (qp->irrq.max_elements)
1562 bnxt_qplib_free_hwq(res, &qp->irrq);
1563 if (qp->orrq.max_elements)
1564 bnxt_qplib_free_hwq(res, &qp->orrq);
1565
1566 }
1567
bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1568 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1569 struct bnxt_qplib_sge *sge)
1570 {
1571 struct bnxt_qplib_q *sq = &qp->sq;
1572 u32 sw_prod;
1573
1574 memset(sge, 0, sizeof(*sge));
1575
1576 if (qp->sq_hdr_buf) {
1577 sw_prod = sq->swq_start;
1578 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1579 sw_prod * qp->sq_hdr_buf_size);
1580 sge->lkey = 0xFFFFFFFF;
1581 sge->size = qp->sq_hdr_buf_size;
1582 return qp->sq_hdr_buf + sw_prod * sge->size;
1583 }
1584 return NULL;
1585 }
1586
bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp * qp)1587 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1588 {
1589 struct bnxt_qplib_q *rq = &qp->rq;
1590
1591 return rq->swq_start;
1592 }
1593
bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp * qp,u32 index)1594 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1595 {
1596 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1597 }
1598
bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1599 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1600 struct bnxt_qplib_sge *sge)
1601 {
1602 struct bnxt_qplib_q *rq = &qp->rq;
1603 u32 sw_prod;
1604
1605 memset(sge, 0, sizeof(*sge));
1606
1607 if (qp->rq_hdr_buf) {
1608 sw_prod = rq->swq_start;
1609 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1610 sw_prod * qp->rq_hdr_buf_size);
1611 sge->lkey = 0xFFFFFFFF;
1612 sge->size = qp->rq_hdr_buf_size;
1613 return qp->rq_hdr_buf + sw_prod * sge->size;
1614 }
1615 return NULL;
1616 }
1617
1618 /* 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)1619 static void bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp *qp,
1620 struct bnxt_qplib_swqe *wqe,
1621 struct bnxt_qplib_swq *swq)
1622 {
1623 struct sq_msn_search *msns;
1624 u32 start_psn, next_psn;
1625 u16 start_idx;
1626
1627 msns = (struct sq_msn_search *)swq->psn_search;
1628 msns->start_idx_next_psn_start_psn = 0;
1629
1630 start_psn = swq->start_psn;
1631 next_psn = swq->next_psn;
1632 start_idx = swq->slot_idx;
1633 msns->start_idx_next_psn_start_psn |=
1634 bnxt_re_update_msn_tbl(start_idx, next_psn, start_psn);
1635 qp->msn++;
1636 qp->msn %= qp->msn_tbl_sz;
1637 }
1638
bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1639 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1640 struct bnxt_qplib_swqe *wqe,
1641 struct bnxt_qplib_swq *swq)
1642 {
1643 struct sq_psn_search_ext *psns_ext;
1644 struct sq_psn_search *psns;
1645 u32 flg_npsn;
1646 u32 op_spsn;
1647
1648 if (!swq->psn_search)
1649 return;
1650 /* Handle MSN differently on cap flags */
1651 if (qp->is_host_msn_tbl) {
1652 bnxt_qplib_fill_msn_search(qp, wqe, swq);
1653 return;
1654 }
1655 psns = (struct sq_psn_search *)swq->psn_search;
1656 psns = swq->psn_search;
1657 psns_ext = swq->psn_ext;
1658
1659 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1660 SQ_PSN_SEARCH_START_PSN_MASK);
1661 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1662 SQ_PSN_SEARCH_OPCODE_MASK);
1663 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1664 SQ_PSN_SEARCH_NEXT_PSN_MASK);
1665
1666 if (bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
1667 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1668 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1669 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1670 } else {
1671 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1672 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1673 }
1674 }
1675
bnxt_qplib_put_inline(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * idx)1676 static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1677 struct bnxt_qplib_swqe *wqe,
1678 u16 *idx)
1679 {
1680 struct bnxt_qplib_hwq *hwq;
1681 int len, t_len, offt;
1682 bool pull_dst = true;
1683 void *il_dst = NULL;
1684 void *il_src = NULL;
1685 int t_cplen, cplen;
1686 int indx;
1687
1688 hwq = &qp->sq.hwq;
1689 t_len = 0;
1690 for (indx = 0; indx < wqe->num_sge; indx++) {
1691 len = wqe->sg_list[indx].size;
1692 il_src = (void *)wqe->sg_list[indx].addr;
1693 t_len += len;
1694 if (t_len > qp->max_inline_data)
1695 return -ENOMEM;
1696 while (len) {
1697 if (pull_dst) {
1698 pull_dst = false;
1699 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1700 (*idx)++;
1701 t_cplen = 0;
1702 offt = 0;
1703 }
1704 cplen = min_t(int, len, sizeof(struct sq_sge));
1705 cplen = min_t(int, cplen,
1706 (sizeof(struct sq_sge) - offt));
1707 memcpy(il_dst, il_src, cplen);
1708 t_cplen += cplen;
1709 il_src += cplen;
1710 il_dst += cplen;
1711 offt += cplen;
1712 len -= cplen;
1713 if (t_cplen == sizeof(struct sq_sge))
1714 pull_dst = true;
1715 }
1716 }
1717
1718 return t_len;
1719 }
1720
bnxt_qplib_put_sges(struct bnxt_qplib_hwq * hwq,struct bnxt_qplib_sge * ssge,u16 nsge,u16 * idx)1721 static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1722 struct bnxt_qplib_sge *ssge,
1723 u16 nsge, u16 *idx)
1724 {
1725 struct sq_sge *dsge;
1726 int indx, len = 0;
1727
1728 for (indx = 0; indx < nsge; indx++, (*idx)++) {
1729 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1730 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1731 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1732 dsge->size = cpu_to_le32(ssge[indx].size);
1733 len += ssge[indx].size;
1734 }
1735
1736 return len;
1737 }
1738
bnxt_qplib_required_slots(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * wqe_sz,u16 * qdf,u8 mode)1739 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1740 struct bnxt_qplib_swqe *wqe,
1741 u16 *wqe_sz, u16 *qdf, u8 mode)
1742 {
1743 u32 ilsize, bytes;
1744 u16 nsge;
1745 u16 slot;
1746
1747 nsge = wqe->num_sge;
1748 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1749 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1750 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1751 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1752 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1753 bytes += sizeof(struct sq_send_hdr);
1754 }
1755
1756 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes);
1757 slot = bytes >> 4;
1758 *wqe_sz = slot;
1759 if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1760 slot = 8;
1761 return slot;
1762 }
1763
bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp * qp,struct bnxt_qplib_q * sq,struct bnxt_qplib_swq * swq,bool hw_retx)1764 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp *qp, struct bnxt_qplib_q *sq,
1765 struct bnxt_qplib_swq *swq, bool hw_retx)
1766 {
1767 struct bnxt_qplib_hwq *hwq;
1768 u32 pg_num, pg_indx;
1769 void *buff;
1770 u32 tail;
1771
1772 hwq = &sq->hwq;
1773 if (!hwq->pad_pg)
1774 return;
1775 tail = swq->slot_idx / sq->dbinfo.max_slot;
1776 if (hw_retx) {
1777 /* For HW retx use qp msn index */
1778 tail = qp->msn;
1779 tail %= qp->msn_tbl_sz;
1780 }
1781 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1782 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1783 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1784 swq->psn_ext = buff;
1785 swq->psn_search = buff;
1786 }
1787
bnxt_qplib_post_send_db(struct bnxt_qplib_qp * qp)1788 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1789 {
1790 struct bnxt_qplib_q *sq = &qp->sq;
1791
1792 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1793 }
1794
bnxt_qplib_post_send(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)1795 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1796 struct bnxt_qplib_swqe *wqe)
1797 {
1798 struct bnxt_qplib_nq_work *nq_work = NULL;
1799 int i, rc = 0, data_len = 0, pkt_num = 0;
1800 struct bnxt_qplib_q *sq = &qp->sq;
1801 struct bnxt_qplib_hwq *hwq;
1802 struct bnxt_qplib_swq *swq;
1803 bool sch_handler = false;
1804 u16 wqe_sz, qdf = 0;
1805 bool msn_update;
1806 void *base_hdr;
1807 void *ext_hdr;
1808 __le32 temp32;
1809 u32 wqe_idx;
1810 u32 slots;
1811 u16 idx;
1812
1813 hwq = &sq->hwq;
1814 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1815 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1816 dev_err(&hwq->pdev->dev,
1817 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1818 qp->id, qp->state);
1819 rc = -EINVAL;
1820 goto done;
1821 }
1822
1823 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1824 if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1825 dev_err(&hwq->pdev->dev,
1826 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1827 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1828 rc = -ENOMEM;
1829 goto done;
1830 }
1831
1832 swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1833 bnxt_qplib_pull_psn_buff(qp, sq, swq, qp->is_host_msn_tbl);
1834
1835 idx = 0;
1836 swq->slot_idx = hwq->prod;
1837 swq->slots = slots;
1838 swq->wr_id = wqe->wr_id;
1839 swq->type = wqe->type;
1840 swq->flags = wqe->flags;
1841 swq->start_psn = sq->psn & BTH_PSN_MASK;
1842 if (qp->sig_type)
1843 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1844
1845 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1846 sch_handler = true;
1847 dev_dbg(&hwq->pdev->dev,
1848 "%s Error QP. Scheduling for poll_cq\n", __func__);
1849 goto queue_err;
1850 }
1851
1852 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1853 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1854 memset(base_hdr, 0, sizeof(struct sq_sge));
1855 memset(ext_hdr, 0, sizeof(struct sq_sge));
1856
1857 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1858 /* Copy the inline data */
1859 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1860 else
1861 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1862 &idx);
1863 if (data_len < 0)
1864 goto queue_err;
1865 /* Make sure we update MSN table only for wired wqes */
1866 msn_update = true;
1867 /* Specifics */
1868 switch (wqe->type) {
1869 case BNXT_QPLIB_SWQE_TYPE_SEND:
1870 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1871 struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1872 struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1873 /* Assemble info for Raw Ethertype QPs */
1874
1875 sqe->wqe_type = wqe->type;
1876 sqe->flags = wqe->flags;
1877 sqe->wqe_size = wqe_sz;
1878 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1879 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1880 sqe->length = cpu_to_le32(data_len);
1881 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1882 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1883 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1884
1885 break;
1886 }
1887 fallthrough;
1888 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1889 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1890 {
1891 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1892 struct sq_send_hdr *sqe = base_hdr;
1893
1894 sqe->wqe_type = wqe->type;
1895 sqe->flags = wqe->flags;
1896 sqe->wqe_size = wqe_sz;
1897 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1898 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1899 qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1900 sqe->q_key = cpu_to_le32(wqe->send.q_key);
1901 sqe->length = cpu_to_le32(data_len);
1902 sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1903 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1904 SQ_SEND_DST_QP_MASK);
1905 ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1906 SQ_SEND_AVID_MASK);
1907 msn_update = false;
1908 } else {
1909 sqe->length = cpu_to_le32(data_len);
1910 if (qp->mtu)
1911 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1912 if (!pkt_num)
1913 pkt_num = 1;
1914 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1915 }
1916 break;
1917 }
1918 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1919 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1920 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1921 {
1922 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1923 struct sq_rdma_hdr *sqe = base_hdr;
1924
1925 sqe->wqe_type = wqe->type;
1926 sqe->flags = wqe->flags;
1927 sqe->wqe_size = wqe_sz;
1928 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1929 sqe->length = cpu_to_le32((u32)data_len);
1930 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1931 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1932 if (qp->mtu)
1933 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1934 if (!pkt_num)
1935 pkt_num = 1;
1936 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1937 break;
1938 }
1939 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
1940 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
1941 {
1942 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
1943 struct sq_atomic_hdr *sqe = base_hdr;
1944
1945 sqe->wqe_type = wqe->type;
1946 sqe->flags = wqe->flags;
1947 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
1948 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
1949 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
1950 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
1951 if (qp->mtu)
1952 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1953 if (!pkt_num)
1954 pkt_num = 1;
1955 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1956 break;
1957 }
1958 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
1959 {
1960 struct sq_localinvalidate *sqe = base_hdr;
1961
1962 sqe->wqe_type = wqe->type;
1963 sqe->flags = wqe->flags;
1964 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
1965 msn_update = false;
1966 break;
1967 }
1968 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
1969 {
1970 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
1971 struct sq_fr_pmr_hdr *sqe = base_hdr;
1972
1973 sqe->wqe_type = wqe->type;
1974 sqe->flags = wqe->flags;
1975 sqe->access_cntl = wqe->frmr.access_cntl |
1976 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
1977 sqe->zero_based_page_size_log =
1978 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
1979 SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
1980 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
1981 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
1982 temp32 = cpu_to_le32(wqe->frmr.length);
1983 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
1984 sqe->numlevels_pbl_page_size_log =
1985 ((wqe->frmr.pbl_pg_sz_log <<
1986 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
1987 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
1988 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
1989 SQ_FR_PMR_NUMLEVELS_MASK);
1990
1991 for (i = 0; i < wqe->frmr.page_list_len; i++)
1992 wqe->frmr.pbl_ptr[i] = cpu_to_le64(
1993 wqe->frmr.page_list[i] |
1994 PTU_PTE_VALID);
1995 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
1996 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
1997 msn_update = false;
1998
1999 break;
2000 }
2001 case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
2002 {
2003 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
2004 struct sq_bind_hdr *sqe = base_hdr;
2005
2006 sqe->wqe_type = wqe->type;
2007 sqe->flags = wqe->flags;
2008 sqe->access_cntl = wqe->bind.access_cntl;
2009 sqe->mw_type_zero_based = wqe->bind.mw_type |
2010 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
2011 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
2012 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
2013 ext_sqe->va = cpu_to_le64(wqe->bind.va);
2014 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
2015 msn_update = false;
2016 break;
2017 }
2018 default:
2019 /* Bad wqe, return error */
2020 rc = -EINVAL;
2021 goto done;
2022 }
2023 if (!qp->is_host_msn_tbl || msn_update) {
2024 swq->next_psn = sq->psn & BTH_PSN_MASK;
2025 bnxt_qplib_fill_psn_search(qp, wqe, swq);
2026 }
2027 queue_err:
2028 bnxt_qplib_swq_mod_start(sq, wqe_idx);
2029 bnxt_qplib_hwq_incr_prod(&sq->dbinfo, hwq, swq->slots);
2030 qp->wqe_cnt++;
2031 done:
2032 if (sch_handler) {
2033 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2034 if (nq_work) {
2035 nq_work->cq = qp->scq;
2036 nq_work->nq = qp->scq->nq;
2037 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2038 queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
2039 } else {
2040 dev_err(&hwq->pdev->dev,
2041 "FP: Failed to allocate SQ nq_work!\n");
2042 rc = -ENOMEM;
2043 }
2044 }
2045 return rc;
2046 }
2047
bnxt_qplib_post_recv_db(struct bnxt_qplib_qp * qp)2048 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
2049 {
2050 struct bnxt_qplib_q *rq = &qp->rq;
2051
2052 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
2053 }
2054
bnxt_qplib_post_recv(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)2055 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
2056 struct bnxt_qplib_swqe *wqe)
2057 {
2058 struct bnxt_qplib_nq_work *nq_work = NULL;
2059 struct bnxt_qplib_q *rq = &qp->rq;
2060 struct rq_wqe_hdr *base_hdr;
2061 struct rq_ext_hdr *ext_hdr;
2062 struct bnxt_qplib_hwq *hwq;
2063 struct bnxt_qplib_swq *swq;
2064 bool sch_handler = false;
2065 u16 wqe_sz, idx;
2066 u32 wqe_idx;
2067 int rc = 0;
2068
2069 hwq = &rq->hwq;
2070 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
2071 dev_err(&hwq->pdev->dev,
2072 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
2073 qp->id, qp->state);
2074 rc = -EINVAL;
2075 goto done;
2076 }
2077
2078 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
2079 dev_err(&hwq->pdev->dev,
2080 "FP: QP (0x%x) RQ is full!\n", qp->id);
2081 rc = -EINVAL;
2082 goto done;
2083 }
2084
2085 swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
2086 swq->wr_id = wqe->wr_id;
2087 swq->slots = rq->dbinfo.max_slot;
2088
2089 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2090 sch_handler = true;
2091 dev_dbg(&hwq->pdev->dev,
2092 "%s: Error QP. Scheduling for poll_cq\n", __func__);
2093 goto queue_err;
2094 }
2095
2096 idx = 0;
2097 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2098 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2099 memset(base_hdr, 0, sizeof(struct sq_sge));
2100 memset(ext_hdr, 0, sizeof(struct sq_sge));
2101 wqe_sz = (sizeof(struct rq_wqe_hdr) +
2102 wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2103 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2104 if (!wqe->num_sge) {
2105 struct sq_sge *sge;
2106
2107 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2108 sge->size = 0;
2109 wqe_sz++;
2110 }
2111 base_hdr->wqe_type = wqe->type;
2112 base_hdr->flags = wqe->flags;
2113 base_hdr->wqe_size = wqe_sz;
2114 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2115 queue_err:
2116 bnxt_qplib_swq_mod_start(rq, wqe_idx);
2117 bnxt_qplib_hwq_incr_prod(&rq->dbinfo, hwq, swq->slots);
2118 done:
2119 if (sch_handler) {
2120 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2121 if (nq_work) {
2122 nq_work->cq = qp->rcq;
2123 nq_work->nq = qp->rcq->nq;
2124 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2125 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2126 } else {
2127 dev_err(&hwq->pdev->dev,
2128 "FP: Failed to allocate RQ nq_work!\n");
2129 rc = -ENOMEM;
2130 }
2131 }
2132
2133 return rc;
2134 }
2135
2136 /* CQ */
bnxt_qplib_create_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2137 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2138 {
2139 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2140 struct bnxt_qplib_hwq_attr hwq_attr = {};
2141 struct creq_create_cq_resp resp = {};
2142 struct bnxt_qplib_cmdqmsg msg = {};
2143 struct cmdq_create_cq req = {};
2144 struct bnxt_qplib_pbl *pbl;
2145 u32 pg_sz_lvl;
2146 int rc;
2147
2148 if (!cq->dpi) {
2149 dev_err(&rcfw->pdev->dev,
2150 "FP: CREATE_CQ failed due to NULL DPI\n");
2151 return -EINVAL;
2152 }
2153
2154 cq->dbinfo.flags = 0;
2155 hwq_attr.res = res;
2156 hwq_attr.depth = cq->max_wqe;
2157 hwq_attr.stride = sizeof(struct cq_base);
2158 hwq_attr.type = HWQ_TYPE_QUEUE;
2159 hwq_attr.sginfo = &cq->sg_info;
2160 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2161 if (rc)
2162 return rc;
2163
2164 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2165 CMDQ_BASE_OPCODE_CREATE_CQ,
2166 sizeof(req));
2167
2168 req.dpi = cpu_to_le32(cq->dpi->dpi);
2169 req.cq_handle = cpu_to_le64(cq->cq_handle);
2170 req.cq_size = cpu_to_le32(cq->max_wqe);
2171 pbl = &cq->hwq.pbl[PBL_LVL_0];
2172 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2173 CMDQ_CREATE_CQ_PG_SIZE_SFT);
2174 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2175 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2176 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2177 req.cq_fco_cnq_id = cpu_to_le32(
2178 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2179 CMDQ_CREATE_CQ_CNQ_ID_SFT);
2180 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2181 sizeof(resp), 0);
2182 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2183 if (rc)
2184 goto fail;
2185
2186 cq->id = le32_to_cpu(resp.xid);
2187 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2188 init_waitqueue_head(&cq->waitq);
2189 INIT_LIST_HEAD(&cq->sqf_head);
2190 INIT_LIST_HEAD(&cq->rqf_head);
2191 spin_lock_init(&cq->compl_lock);
2192 spin_lock_init(&cq->flush_lock);
2193
2194 cq->dbinfo.hwq = &cq->hwq;
2195 cq->dbinfo.xid = cq->id;
2196 cq->dbinfo.db = cq->dpi->dbr;
2197 cq->dbinfo.priv_db = res->dpi_tbl.priv_db;
2198
2199 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2200
2201 return 0;
2202
2203 fail:
2204 bnxt_qplib_free_hwq(res, &cq->hwq);
2205 return rc;
2206 }
2207
bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2208 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2209 struct bnxt_qplib_cq *cq)
2210 {
2211 bnxt_qplib_free_hwq(res, &cq->hwq);
2212 memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2213 /* Reset only the cons bit in the flags */
2214 cq->dbinfo.flags &= ~(1UL << BNXT_QPLIB_FLAG_EPOCH_CONS_SHIFT);
2215 }
2216
bnxt_qplib_resize_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq,int new_cqes)2217 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2218 int new_cqes)
2219 {
2220 struct bnxt_qplib_hwq_attr hwq_attr = {};
2221 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2222 struct creq_resize_cq_resp resp = {};
2223 struct bnxt_qplib_cmdqmsg msg = {};
2224 struct cmdq_resize_cq req = {};
2225 struct bnxt_qplib_pbl *pbl;
2226 u32 pg_sz, lvl, new_sz;
2227 int rc;
2228
2229 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2230 CMDQ_BASE_OPCODE_RESIZE_CQ,
2231 sizeof(req));
2232 hwq_attr.sginfo = &cq->sg_info;
2233 hwq_attr.res = res;
2234 hwq_attr.depth = new_cqes;
2235 hwq_attr.stride = sizeof(struct cq_base);
2236 hwq_attr.type = HWQ_TYPE_QUEUE;
2237 rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2238 if (rc)
2239 return rc;
2240
2241 req.cq_cid = cpu_to_le32(cq->id);
2242 pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2243 pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2244 lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2245 CMDQ_RESIZE_CQ_LVL_MASK;
2246 new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2247 CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2248 req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2249 req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2250
2251 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2252 sizeof(resp), 0);
2253 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2254 return rc;
2255 }
2256
bnxt_qplib_destroy_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2257 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2258 {
2259 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2260 struct creq_destroy_cq_resp resp = {};
2261 struct bnxt_qplib_cmdqmsg msg = {};
2262 struct cmdq_destroy_cq req = {};
2263 u16 total_cnq_events;
2264 int rc;
2265
2266 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2267 CMDQ_BASE_OPCODE_DESTROY_CQ,
2268 sizeof(req));
2269
2270 req.cq_cid = cpu_to_le32(cq->id);
2271 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2272 sizeof(resp), 0);
2273 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2274 if (rc)
2275 return rc;
2276 total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2277 __wait_for_all_nqes(cq, total_cnq_events);
2278 bnxt_qplib_free_hwq(res, &cq->hwq);
2279 return 0;
2280 }
2281
__flush_sq(struct bnxt_qplib_q * sq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2282 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2283 struct bnxt_qplib_cqe **pcqe, int *budget)
2284 {
2285 struct bnxt_qplib_cqe *cqe;
2286 u32 start, last;
2287 int rc = 0;
2288
2289 /* Now complete all outstanding SQEs with FLUSHED_ERR */
2290 start = sq->swq_start;
2291 cqe = *pcqe;
2292 while (*budget) {
2293 last = sq->swq_last;
2294 if (start == last)
2295 break;
2296 /* Skip the FENCE WQE completions */
2297 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2298 bnxt_qplib_cancel_phantom_processing(qp);
2299 goto skip_compl;
2300 }
2301 memset(cqe, 0, sizeof(*cqe));
2302 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2303 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2304 cqe->qp_handle = (u64)(unsigned long)qp;
2305 cqe->wr_id = sq->swq[last].wr_id;
2306 cqe->src_qp = qp->id;
2307 cqe->type = sq->swq[last].type;
2308 cqe++;
2309 (*budget)--;
2310 skip_compl:
2311 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2312 sq->swq[last].slots, &sq->dbinfo.flags);
2313 sq->swq_last = sq->swq[last].next_idx;
2314 }
2315 *pcqe = cqe;
2316 if (!(*budget) && sq->swq_last != start)
2317 /* Out of budget */
2318 rc = -EAGAIN;
2319
2320 return rc;
2321 }
2322
__flush_rq(struct bnxt_qplib_q * rq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2323 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2324 struct bnxt_qplib_cqe **pcqe, int *budget)
2325 {
2326 struct bnxt_qplib_cqe *cqe;
2327 u32 start, last;
2328 int opcode = 0;
2329 int rc = 0;
2330
2331 switch (qp->type) {
2332 case CMDQ_CREATE_QP1_TYPE_GSI:
2333 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2334 break;
2335 case CMDQ_CREATE_QP_TYPE_RC:
2336 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2337 break;
2338 case CMDQ_CREATE_QP_TYPE_UD:
2339 case CMDQ_CREATE_QP_TYPE_GSI:
2340 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2341 break;
2342 }
2343
2344 /* Flush the rest of the RQ */
2345 start = rq->swq_start;
2346 cqe = *pcqe;
2347 while (*budget) {
2348 last = rq->swq_last;
2349 if (last == start)
2350 break;
2351 memset(cqe, 0, sizeof(*cqe));
2352 cqe->status =
2353 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2354 cqe->opcode = opcode;
2355 cqe->qp_handle = (unsigned long)qp;
2356 cqe->wr_id = rq->swq[last].wr_id;
2357 cqe++;
2358 (*budget)--;
2359 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2360 rq->swq[last].slots, &rq->dbinfo.flags);
2361 rq->swq_last = rq->swq[last].next_idx;
2362 }
2363 *pcqe = cqe;
2364 if (!*budget && rq->swq_last != start)
2365 /* Out of budget */
2366 rc = -EAGAIN;
2367
2368 return rc;
2369 }
2370
bnxt_qplib_mark_qp_error(void * qp_handle)2371 void bnxt_qplib_mark_qp_error(void *qp_handle)
2372 {
2373 struct bnxt_qplib_qp *qp = qp_handle;
2374
2375 if (!qp)
2376 return;
2377
2378 /* Must block new posting of SQ and RQ */
2379 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2380 bnxt_qplib_cancel_phantom_processing(qp);
2381 }
2382
2383 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2384 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2385 */
do_wa9060(struct bnxt_qplib_qp * qp,struct bnxt_qplib_cq * cq,u32 cq_cons,u32 swq_last,u32 cqe_sq_cons)2386 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2387 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2388 {
2389 u32 peek_sw_cq_cons, peek_sq_cons_idx, peek_flags;
2390 struct bnxt_qplib_q *sq = &qp->sq;
2391 struct cq_req *peek_req_hwcqe;
2392 struct bnxt_qplib_qp *peek_qp;
2393 struct bnxt_qplib_q *peek_sq;
2394 struct bnxt_qplib_swq *swq;
2395 struct cq_base *peek_hwcqe;
2396 int i, rc = 0;
2397
2398 /* Normal mode */
2399 /* Check for the psn_search marking before completing */
2400 swq = &sq->swq[swq_last];
2401 if (swq->psn_search &&
2402 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2403 /* Unmark */
2404 swq->psn_search->flags_next_psn = cpu_to_le32
2405 (le32_to_cpu(swq->psn_search->flags_next_psn)
2406 & ~0x80000000);
2407 dev_dbg(&cq->hwq.pdev->dev,
2408 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2409 cq_cons, qp->id, swq_last, cqe_sq_cons);
2410 sq->condition = true;
2411 sq->send_phantom = true;
2412
2413 /* TODO: Only ARM if the previous SQE is ARMALL */
2414 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2415 rc = -EAGAIN;
2416 goto out;
2417 }
2418 if (sq->condition) {
2419 /* Peek at the completions */
2420 peek_flags = cq->dbinfo.flags;
2421 peek_sw_cq_cons = cq_cons;
2422 i = cq->hwq.max_elements;
2423 while (i--) {
2424 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2425 peek_sw_cq_cons, NULL);
2426 /* If the next hwcqe is VALID */
2427 if (CQE_CMP_VALID(peek_hwcqe, peek_flags)) {
2428 /*
2429 * The valid test of the entry must be done first before
2430 * reading any further.
2431 */
2432 dma_rmb();
2433 /* If the next hwcqe is a REQ */
2434 if ((peek_hwcqe->cqe_type_toggle &
2435 CQ_BASE_CQE_TYPE_MASK) ==
2436 CQ_BASE_CQE_TYPE_REQ) {
2437 peek_req_hwcqe = (struct cq_req *)
2438 peek_hwcqe;
2439 peek_qp = (struct bnxt_qplib_qp *)
2440 ((unsigned long)
2441 le64_to_cpu
2442 (peek_req_hwcqe->qp_handle));
2443 peek_sq = &peek_qp->sq;
2444 peek_sq_cons_idx =
2445 ((le16_to_cpu(
2446 peek_req_hwcqe->sq_cons_idx)
2447 - 1) % sq->max_wqe);
2448 /* If the hwcqe's sq's wr_id matches */
2449 if (peek_sq == sq &&
2450 sq->swq[peek_sq_cons_idx].wr_id ==
2451 BNXT_QPLIB_FENCE_WRID) {
2452 /*
2453 * Unbreak only if the phantom
2454 * comes back
2455 */
2456 dev_dbg(&cq->hwq.pdev->dev,
2457 "FP: Got Phantom CQE\n");
2458 sq->condition = false;
2459 sq->single = true;
2460 rc = 0;
2461 goto out;
2462 }
2463 }
2464 /* Valid but not the phantom, so keep looping */
2465 } else {
2466 /* Not valid yet, just exit and wait */
2467 rc = -EINVAL;
2468 goto out;
2469 }
2470 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements,
2471 &peek_sw_cq_cons,
2472 1, &peek_flags);
2473 }
2474 dev_err(&cq->hwq.pdev->dev,
2475 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2476 cq_cons, qp->id, swq_last, cqe_sq_cons);
2477 rc = -EINVAL;
2478 }
2479 out:
2480 return rc;
2481 }
2482
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)2483 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2484 struct cq_req *hwcqe,
2485 struct bnxt_qplib_cqe **pcqe, int *budget,
2486 u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2487 {
2488 struct bnxt_qplib_swq *swq;
2489 struct bnxt_qplib_cqe *cqe;
2490 struct bnxt_qplib_qp *qp;
2491 struct bnxt_qplib_q *sq;
2492 u32 cqe_sq_cons;
2493 int rc = 0;
2494
2495 qp = (struct bnxt_qplib_qp *)((unsigned long)
2496 le64_to_cpu(hwcqe->qp_handle));
2497 if (!qp) {
2498 dev_err(&cq->hwq.pdev->dev,
2499 "FP: Process Req qp is NULL\n");
2500 return -EINVAL;
2501 }
2502 sq = &qp->sq;
2503
2504 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_sw_wqe;
2505 if (qp->sq.flushed) {
2506 dev_dbg(&cq->hwq.pdev->dev,
2507 "%s: QP in Flush QP = %p\n", __func__, qp);
2508 goto done;
2509 }
2510 /* Require to walk the sq's swq to fabricate CQEs for all previously
2511 * signaled SWQEs due to CQE aggregation from the current sq cons
2512 * to the cqe_sq_cons
2513 */
2514 cqe = *pcqe;
2515 while (*budget) {
2516 if (sq->swq_last == cqe_sq_cons)
2517 /* Done */
2518 break;
2519
2520 swq = &sq->swq[sq->swq_last];
2521 memset(cqe, 0, sizeof(*cqe));
2522 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2523 cqe->qp_handle = (u64)(unsigned long)qp;
2524 cqe->src_qp = qp->id;
2525 cqe->wr_id = swq->wr_id;
2526 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2527 goto skip;
2528 cqe->type = swq->type;
2529
2530 /* For the last CQE, check for status. For errors, regardless
2531 * of the request being signaled or not, it must complete with
2532 * the hwcqe error status
2533 */
2534 if (swq->next_idx == cqe_sq_cons &&
2535 hwcqe->status != CQ_REQ_STATUS_OK) {
2536 cqe->status = hwcqe->status;
2537 dev_err(&cq->hwq.pdev->dev,
2538 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2539 sq->swq_last, cqe->wr_id, cqe->status);
2540 cqe++;
2541 (*budget)--;
2542 bnxt_qplib_mark_qp_error(qp);
2543 /* Add qp to flush list of the CQ */
2544 bnxt_qplib_add_flush_qp(qp);
2545 } else {
2546 /* Before we complete, do WA 9060 */
2547 if (!bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
2548 if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2549 cqe_sq_cons)) {
2550 *lib_qp = qp;
2551 goto out;
2552 }
2553 }
2554 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2555 cqe->status = CQ_REQ_STATUS_OK;
2556 cqe++;
2557 (*budget)--;
2558 }
2559 }
2560 skip:
2561 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2562 swq->slots, &sq->dbinfo.flags);
2563 sq->swq_last = swq->next_idx;
2564 if (sq->single)
2565 break;
2566 }
2567 out:
2568 *pcqe = cqe;
2569 if (sq->swq_last != cqe_sq_cons) {
2570 /* Out of budget */
2571 rc = -EAGAIN;
2572 goto done;
2573 }
2574 /*
2575 * Back to normal completion mode only after it has completed all of
2576 * the WC for this CQE
2577 */
2578 sq->single = false;
2579 done:
2580 return rc;
2581 }
2582
bnxt_qplib_release_srqe(struct bnxt_qplib_srq * srq,u32 tag)2583 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2584 {
2585 spin_lock(&srq->hwq.lock);
2586 srq->swq[srq->last_idx].next_idx = (int)tag;
2587 srq->last_idx = (int)tag;
2588 srq->swq[srq->last_idx].next_idx = -1;
2589 bnxt_qplib_hwq_incr_cons(srq->hwq.max_elements, &srq->hwq.cons,
2590 srq->dbinfo.max_slot, &srq->dbinfo.flags);
2591 spin_unlock(&srq->hwq.lock);
2592 }
2593
bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq * cq,struct cq_res_rc * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2594 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2595 struct cq_res_rc *hwcqe,
2596 struct bnxt_qplib_cqe **pcqe,
2597 int *budget)
2598 {
2599 struct bnxt_qplib_srq *srq;
2600 struct bnxt_qplib_cqe *cqe;
2601 struct bnxt_qplib_qp *qp;
2602 struct bnxt_qplib_q *rq;
2603 u32 wr_id_idx;
2604
2605 qp = (struct bnxt_qplib_qp *)((unsigned long)
2606 le64_to_cpu(hwcqe->qp_handle));
2607 if (!qp) {
2608 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2609 return -EINVAL;
2610 }
2611 if (qp->rq.flushed) {
2612 dev_dbg(&cq->hwq.pdev->dev,
2613 "%s: QP in Flush QP = %p\n", __func__, qp);
2614 return 0;
2615 }
2616
2617 cqe = *pcqe;
2618 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2619 cqe->length = le32_to_cpu(hwcqe->length);
2620 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2621 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2622 cqe->flags = le16_to_cpu(hwcqe->flags);
2623 cqe->status = hwcqe->status;
2624 cqe->qp_handle = (u64)(unsigned long)qp;
2625
2626 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2627 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2628 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2629 srq = qp->srq;
2630 if (!srq)
2631 return -EINVAL;
2632 if (wr_id_idx >= srq->hwq.max_elements) {
2633 dev_err(&cq->hwq.pdev->dev,
2634 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2635 wr_id_idx, srq->hwq.max_elements);
2636 return -EINVAL;
2637 }
2638 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2639 bnxt_qplib_release_srqe(srq, wr_id_idx);
2640 cqe++;
2641 (*budget)--;
2642 *pcqe = cqe;
2643 } else {
2644 struct bnxt_qplib_swq *swq;
2645
2646 rq = &qp->rq;
2647 if (wr_id_idx > (rq->max_wqe - 1)) {
2648 dev_err(&cq->hwq.pdev->dev,
2649 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2650 wr_id_idx, rq->max_wqe);
2651 return -EINVAL;
2652 }
2653 if (wr_id_idx != rq->swq_last)
2654 return -EINVAL;
2655 swq = &rq->swq[rq->swq_last];
2656 cqe->wr_id = swq->wr_id;
2657 cqe++;
2658 (*budget)--;
2659 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2660 swq->slots, &rq->dbinfo.flags);
2661 rq->swq_last = swq->next_idx;
2662 *pcqe = cqe;
2663
2664 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2665 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2666 /* Add qp to flush list of the CQ */
2667 bnxt_qplib_add_flush_qp(qp);
2668 }
2669 }
2670
2671 return 0;
2672 }
2673
bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq * cq,struct cq_res_ud * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2674 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2675 struct cq_res_ud *hwcqe,
2676 struct bnxt_qplib_cqe **pcqe,
2677 int *budget)
2678 {
2679 struct bnxt_qplib_srq *srq;
2680 struct bnxt_qplib_cqe *cqe;
2681 struct bnxt_qplib_qp *qp;
2682 struct bnxt_qplib_q *rq;
2683 u32 wr_id_idx;
2684
2685 qp = (struct bnxt_qplib_qp *)((unsigned long)
2686 le64_to_cpu(hwcqe->qp_handle));
2687 if (!qp) {
2688 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2689 return -EINVAL;
2690 }
2691 if (qp->rq.flushed) {
2692 dev_dbg(&cq->hwq.pdev->dev,
2693 "%s: QP in Flush QP = %p\n", __func__, qp);
2694 return 0;
2695 }
2696 cqe = *pcqe;
2697 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2698 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2699 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2700 cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2701 cqe->flags = le16_to_cpu(hwcqe->flags);
2702 cqe->status = hwcqe->status;
2703 cqe->qp_handle = (u64)(unsigned long)qp;
2704 /*FIXME: Endianness fix needed for smace */
2705 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2706 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2707 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2708 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2709 ((le32_to_cpu(
2710 hwcqe->src_qp_high_srq_or_rq_wr_id) &
2711 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2712
2713 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2714 srq = qp->srq;
2715 if (!srq)
2716 return -EINVAL;
2717
2718 if (wr_id_idx >= srq->hwq.max_elements) {
2719 dev_err(&cq->hwq.pdev->dev,
2720 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2721 wr_id_idx, srq->hwq.max_elements);
2722 return -EINVAL;
2723 }
2724 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2725 bnxt_qplib_release_srqe(srq, wr_id_idx);
2726 cqe++;
2727 (*budget)--;
2728 *pcqe = cqe;
2729 } else {
2730 struct bnxt_qplib_swq *swq;
2731
2732 rq = &qp->rq;
2733 if (wr_id_idx > (rq->max_wqe - 1)) {
2734 dev_err(&cq->hwq.pdev->dev,
2735 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2736 wr_id_idx, rq->max_wqe);
2737 return -EINVAL;
2738 }
2739
2740 if (rq->swq_last != wr_id_idx)
2741 return -EINVAL;
2742 swq = &rq->swq[rq->swq_last];
2743 cqe->wr_id = swq->wr_id;
2744 cqe++;
2745 (*budget)--;
2746 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2747 swq->slots, &rq->dbinfo.flags);
2748 rq->swq_last = swq->next_idx;
2749 *pcqe = cqe;
2750
2751 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2752 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2753 /* Add qp to flush list of the CQ */
2754 bnxt_qplib_add_flush_qp(qp);
2755 }
2756 }
2757
2758 return 0;
2759 }
2760
bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq * cq)2761 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2762 {
2763 struct cq_base *hw_cqe;
2764 bool rc = true;
2765
2766 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
2767 /* Check for Valid bit. If the CQE is valid, return false */
2768 rc = !CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags);
2769 return rc;
2770 }
2771
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)2772 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2773 struct cq_res_raweth_qp1 *hwcqe,
2774 struct bnxt_qplib_cqe **pcqe,
2775 int *budget)
2776 {
2777 struct bnxt_qplib_qp *qp;
2778 struct bnxt_qplib_q *rq;
2779 struct bnxt_qplib_srq *srq;
2780 struct bnxt_qplib_cqe *cqe;
2781 u32 wr_id_idx;
2782
2783 qp = (struct bnxt_qplib_qp *)((unsigned long)
2784 le64_to_cpu(hwcqe->qp_handle));
2785 if (!qp) {
2786 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2787 return -EINVAL;
2788 }
2789 if (qp->rq.flushed) {
2790 dev_dbg(&cq->hwq.pdev->dev,
2791 "%s: QP in Flush QP = %p\n", __func__, qp);
2792 return 0;
2793 }
2794 cqe = *pcqe;
2795 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2796 cqe->flags = le16_to_cpu(hwcqe->flags);
2797 cqe->qp_handle = (u64)(unsigned long)qp;
2798
2799 wr_id_idx =
2800 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2801 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2802 cqe->src_qp = qp->id;
2803 if (qp->id == 1 && !cqe->length) {
2804 /* Add workaround for the length misdetection */
2805 cqe->length = 296;
2806 } else {
2807 cqe->length = le16_to_cpu(hwcqe->length);
2808 }
2809 cqe->pkey_index = qp->pkey_index;
2810 memcpy(cqe->smac, qp->smac, 6);
2811
2812 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2813 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2814 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2815
2816 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2817 srq = qp->srq;
2818 if (!srq) {
2819 dev_err(&cq->hwq.pdev->dev,
2820 "FP: SRQ used but not defined??\n");
2821 return -EINVAL;
2822 }
2823 if (wr_id_idx >= srq->hwq.max_elements) {
2824 dev_err(&cq->hwq.pdev->dev,
2825 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2826 wr_id_idx, srq->hwq.max_elements);
2827 return -EINVAL;
2828 }
2829 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2830 bnxt_qplib_release_srqe(srq, wr_id_idx);
2831 cqe++;
2832 (*budget)--;
2833 *pcqe = cqe;
2834 } else {
2835 struct bnxt_qplib_swq *swq;
2836
2837 rq = &qp->rq;
2838 if (wr_id_idx > (rq->max_wqe - 1)) {
2839 dev_err(&cq->hwq.pdev->dev,
2840 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2841 wr_id_idx, rq->max_wqe);
2842 return -EINVAL;
2843 }
2844 if (rq->swq_last != wr_id_idx)
2845 return -EINVAL;
2846 swq = &rq->swq[rq->swq_last];
2847 cqe->wr_id = swq->wr_id;
2848 cqe++;
2849 (*budget)--;
2850 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2851 swq->slots, &rq->dbinfo.flags);
2852 rq->swq_last = swq->next_idx;
2853 *pcqe = cqe;
2854
2855 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2856 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2857 /* Add qp to flush list of the CQ */
2858 bnxt_qplib_add_flush_qp(qp);
2859 }
2860 }
2861
2862 return 0;
2863 }
2864
bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq * cq,struct cq_terminal * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2865 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2866 struct cq_terminal *hwcqe,
2867 struct bnxt_qplib_cqe **pcqe,
2868 int *budget)
2869 {
2870 struct bnxt_qplib_qp *qp;
2871 struct bnxt_qplib_q *sq, *rq;
2872 struct bnxt_qplib_cqe *cqe;
2873 u32 swq_last = 0, cqe_cons;
2874 int rc = 0;
2875
2876 /* Check the Status */
2877 if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2878 dev_warn(&cq->hwq.pdev->dev,
2879 "FP: CQ Process Terminal Error status = 0x%x\n",
2880 hwcqe->status);
2881
2882 qp = (struct bnxt_qplib_qp *)((unsigned long)
2883 le64_to_cpu(hwcqe->qp_handle));
2884 if (!qp)
2885 return -EINVAL;
2886
2887 /* Must block new posting of SQ and RQ */
2888 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2889
2890 sq = &qp->sq;
2891 rq = &qp->rq;
2892
2893 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
2894 if (cqe_cons == 0xFFFF)
2895 goto do_rq;
2896 cqe_cons %= sq->max_sw_wqe;
2897
2898 if (qp->sq.flushed) {
2899 dev_dbg(&cq->hwq.pdev->dev,
2900 "%s: QP in Flush QP = %p\n", __func__, qp);
2901 goto sq_done;
2902 }
2903
2904 /* Terminal CQE can also include aggregated successful CQEs prior.
2905 * So we must complete all CQEs from the current sq's cons to the
2906 * cq_cons with status OK
2907 */
2908 cqe = *pcqe;
2909 while (*budget) {
2910 swq_last = sq->swq_last;
2911 if (swq_last == cqe_cons)
2912 break;
2913 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2914 memset(cqe, 0, sizeof(*cqe));
2915 cqe->status = CQ_REQ_STATUS_OK;
2916 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2917 cqe->qp_handle = (u64)(unsigned long)qp;
2918 cqe->src_qp = qp->id;
2919 cqe->wr_id = sq->swq[swq_last].wr_id;
2920 cqe->type = sq->swq[swq_last].type;
2921 cqe++;
2922 (*budget)--;
2923 }
2924 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2925 sq->swq[swq_last].slots, &sq->dbinfo.flags);
2926 sq->swq_last = sq->swq[swq_last].next_idx;
2927 }
2928 *pcqe = cqe;
2929 if (!(*budget) && swq_last != cqe_cons) {
2930 /* Out of budget */
2931 rc = -EAGAIN;
2932 goto sq_done;
2933 }
2934 sq_done:
2935 if (rc)
2936 return rc;
2937 do_rq:
2938 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
2939 if (cqe_cons == 0xFFFF) {
2940 goto done;
2941 } else if (cqe_cons > rq->max_wqe - 1) {
2942 dev_err(&cq->hwq.pdev->dev,
2943 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
2944 cqe_cons, rq->max_wqe);
2945 rc = -EINVAL;
2946 goto done;
2947 }
2948
2949 if (qp->rq.flushed) {
2950 dev_dbg(&cq->hwq.pdev->dev,
2951 "%s: QP in Flush QP = %p\n", __func__, qp);
2952 rc = 0;
2953 goto done;
2954 }
2955
2956 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
2957 * from the current rq->cons to the rq->prod regardless what the
2958 * rq->cons the terminal CQE indicates
2959 */
2960
2961 /* Add qp to flush list of the CQ */
2962 bnxt_qplib_add_flush_qp(qp);
2963 done:
2964 return rc;
2965 }
2966
bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq * cq,struct cq_cutoff * hwcqe)2967 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
2968 struct cq_cutoff *hwcqe)
2969 {
2970 /* Check the Status */
2971 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
2972 dev_err(&cq->hwq.pdev->dev,
2973 "FP: CQ Process Cutoff Error status = 0x%x\n",
2974 hwcqe->status);
2975 return -EINVAL;
2976 }
2977 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
2978 wake_up_interruptible(&cq->waitq);
2979
2980 return 0;
2981 }
2982
bnxt_qplib_process_flush_list(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes)2983 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
2984 struct bnxt_qplib_cqe *cqe,
2985 int num_cqes)
2986 {
2987 struct bnxt_qplib_qp *qp = NULL;
2988 u32 budget = num_cqes;
2989 unsigned long flags;
2990
2991 spin_lock_irqsave(&cq->flush_lock, flags);
2992 list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
2993 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
2994 __flush_sq(&qp->sq, qp, &cqe, &budget);
2995 }
2996
2997 list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
2998 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
2999 __flush_rq(&qp->rq, qp, &cqe, &budget);
3000 }
3001 spin_unlock_irqrestore(&cq->flush_lock, flags);
3002
3003 return num_cqes - budget;
3004 }
3005
bnxt_qplib_poll_cq(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes,struct bnxt_qplib_qp ** lib_qp)3006 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
3007 int num_cqes, struct bnxt_qplib_qp **lib_qp)
3008 {
3009 struct cq_base *hw_cqe;
3010 int budget, rc = 0;
3011 u32 hw_polled = 0;
3012 u8 type;
3013
3014 budget = num_cqes;
3015
3016 while (budget) {
3017 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
3018
3019 /* Check for Valid bit */
3020 if (!CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags))
3021 break;
3022
3023 /*
3024 * The valid test of the entry must be done first before
3025 * reading any further.
3026 */
3027 dma_rmb();
3028 /* From the device's respective CQE format to qplib_wc*/
3029 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
3030 switch (type) {
3031 case CQ_BASE_CQE_TYPE_REQ:
3032 rc = bnxt_qplib_cq_process_req(cq,
3033 (struct cq_req *)hw_cqe,
3034 &cqe, &budget,
3035 cq->hwq.cons, lib_qp);
3036 break;
3037 case CQ_BASE_CQE_TYPE_RES_RC:
3038 rc = bnxt_qplib_cq_process_res_rc(cq,
3039 (struct cq_res_rc *)
3040 hw_cqe, &cqe,
3041 &budget);
3042 break;
3043 case CQ_BASE_CQE_TYPE_RES_UD:
3044 rc = bnxt_qplib_cq_process_res_ud
3045 (cq, (struct cq_res_ud *)hw_cqe, &cqe,
3046 &budget);
3047 break;
3048 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
3049 rc = bnxt_qplib_cq_process_res_raweth_qp1
3050 (cq, (struct cq_res_raweth_qp1 *)
3051 hw_cqe, &cqe, &budget);
3052 break;
3053 case CQ_BASE_CQE_TYPE_TERMINAL:
3054 rc = bnxt_qplib_cq_process_terminal
3055 (cq, (struct cq_terminal *)hw_cqe,
3056 &cqe, &budget);
3057 break;
3058 case CQ_BASE_CQE_TYPE_CUT_OFF:
3059 bnxt_qplib_cq_process_cutoff
3060 (cq, (struct cq_cutoff *)hw_cqe);
3061 /* Done processing this CQ */
3062 goto exit;
3063 default:
3064 dev_err(&cq->hwq.pdev->dev,
3065 "process_cq unknown type 0x%lx\n",
3066 hw_cqe->cqe_type_toggle &
3067 CQ_BASE_CQE_TYPE_MASK);
3068 rc = -EINVAL;
3069 break;
3070 }
3071 if (rc < 0) {
3072 if (rc == -EAGAIN)
3073 break;
3074 /* Error while processing the CQE, just skip to the
3075 * next one
3076 */
3077 if (type != CQ_BASE_CQE_TYPE_TERMINAL)
3078 dev_err(&cq->hwq.pdev->dev,
3079 "process_cqe error rc = 0x%x\n", rc);
3080 }
3081 hw_polled++;
3082 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements, &cq->hwq.cons,
3083 1, &cq->dbinfo.flags);
3084
3085 }
3086 if (hw_polled)
3087 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
3088 exit:
3089 return num_cqes - budget;
3090 }
3091
bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq * cq,u32 arm_type)3092 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3093 {
3094 if (arm_type)
3095 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3096 /* Using cq->arm_state variable to track whether to issue cq handler */
3097 atomic_set(&cq->arm_state, 1);
3098 }
3099
bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp * qp)3100 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3101 {
3102 flush_workqueue(qp->scq->nq->cqn_wq);
3103 if (qp->scq != qp->rcq)
3104 flush_workqueue(qp->rcq->nq->cqn_wq);
3105 }
3106