1 /*
2 * Broadcom NetXtreme-E RoCE driver.
3 *
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Description: Fast Path Operators
37 */
38
39 #define dev_fmt(fmt) "QPLIB: " fmt
40
41 #include <linux/interrupt.h>
42 #include <linux/spinlock.h>
43 #include <linux/sched.h>
44 #include <linux/slab.h>
45 #include <linux/pci.h>
46 #include <linux/delay.h>
47 #include <linux/prefetch.h>
48 #include <linux/if_ether.h>
49 #include <rdma/ib_mad.h>
50
51 #include "roce_hsi.h"
52
53 #include "qplib_res.h"
54 #include "qplib_rcfw.h"
55 #include "qplib_sp.h"
56 #include "qplib_fp.h"
57 #include <rdma/ib_addr.h>
58 #include "bnxt_ulp.h"
59 #include "bnxt_re.h"
60 #include "ib_verbs.h"
61
62 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
63
bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp * qp)64 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
65 {
66 qp->sq.condition = false;
67 qp->sq.send_phantom = false;
68 qp->sq.single = false;
69 }
70
71 /* Flush list */
__bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)72 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
73 {
74 struct bnxt_qplib_cq *scq, *rcq;
75
76 scq = qp->scq;
77 rcq = qp->rcq;
78
79 if (!qp->sq.flushed) {
80 dev_dbg(&scq->hwq.pdev->dev,
81 "FP: Adding to SQ Flush list = %p\n", qp);
82 bnxt_qplib_cancel_phantom_processing(qp);
83 list_add_tail(&qp->sq_flush, &scq->sqf_head);
84 qp->sq.flushed = true;
85 }
86 if (!qp->srq) {
87 if (!qp->rq.flushed) {
88 dev_dbg(&rcq->hwq.pdev->dev,
89 "FP: Adding to RQ Flush list = %p\n", qp);
90 list_add_tail(&qp->rq_flush, &rcq->rqf_head);
91 qp->rq.flushed = true;
92 }
93 }
94 }
95
bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)96 static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp,
97 unsigned long *flags)
98 __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock)
99 {
100 spin_lock_irqsave(&qp->scq->flush_lock, *flags);
101 if (qp->scq == qp->rcq)
102 __acquire(&qp->rcq->flush_lock);
103 else
104 spin_lock(&qp->rcq->flush_lock);
105 }
106
bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp * qp,unsigned long * flags)107 static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp,
108 unsigned long *flags)
109 __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock)
110 {
111 if (qp->scq == qp->rcq)
112 __release(&qp->rcq->flush_lock);
113 else
114 spin_unlock(&qp->rcq->flush_lock);
115 spin_unlock_irqrestore(&qp->scq->flush_lock, *flags);
116 }
117
bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp * qp)118 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
119 {
120 unsigned long flags;
121
122 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
123 __bnxt_qplib_add_flush_qp(qp);
124 bnxt_qplib_release_cq_flush_locks(qp, &flags);
125 }
126
__bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp * qp)127 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
128 {
129 if (qp->sq.flushed) {
130 qp->sq.flushed = false;
131 list_del(&qp->sq_flush);
132 }
133 if (!qp->srq) {
134 if (qp->rq.flushed) {
135 qp->rq.flushed = false;
136 list_del(&qp->rq_flush);
137 }
138 }
139 }
140
bnxt_qplib_clean_qp(struct bnxt_qplib_qp * qp)141 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp)
142 {
143 unsigned long flags;
144
145 bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
146 __clean_cq(qp->scq, (u64)(unsigned long)qp);
147 qp->sq.hwq.prod = 0;
148 qp->sq.hwq.cons = 0;
149 __clean_cq(qp->rcq, (u64)(unsigned long)qp);
150 qp->rq.hwq.prod = 0;
151 qp->rq.hwq.cons = 0;
152
153 __bnxt_qplib_del_flush_qp(qp);
154 bnxt_qplib_release_cq_flush_locks(qp, &flags);
155 }
156
bnxt_qpn_cqn_sched_task(struct work_struct * work)157 static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
158 {
159 struct bnxt_qplib_nq_work *nq_work =
160 container_of(work, struct bnxt_qplib_nq_work, work);
161
162 struct bnxt_qplib_cq *cq = nq_work->cq;
163 struct bnxt_qplib_nq *nq = nq_work->nq;
164
165 if (cq && nq) {
166 spin_lock_bh(&cq->compl_lock);
167 if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
168 dev_dbg(&nq->pdev->dev,
169 "%s:Trigger cq = %p event nq = %p\n",
170 __func__, cq, nq);
171 nq->cqn_handler(nq, cq);
172 }
173 spin_unlock_bh(&cq->compl_lock);
174 }
175 kfree(nq_work);
176 }
177
bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)178 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
179 struct bnxt_qplib_qp *qp)
180 {
181 struct bnxt_qplib_q *rq = &qp->rq;
182 struct bnxt_qplib_q *sq = &qp->sq;
183
184 if (qp->rq_hdr_buf)
185 dma_free_coherent(&res->pdev->dev,
186 rq->max_wqe * qp->rq_hdr_buf_size,
187 qp->rq_hdr_buf, qp->rq_hdr_buf_map);
188 if (qp->sq_hdr_buf)
189 dma_free_coherent(&res->pdev->dev,
190 sq->max_wqe * qp->sq_hdr_buf_size,
191 qp->sq_hdr_buf, qp->sq_hdr_buf_map);
192 qp->rq_hdr_buf = NULL;
193 qp->sq_hdr_buf = NULL;
194 qp->rq_hdr_buf_map = 0;
195 qp->sq_hdr_buf_map = 0;
196 qp->sq_hdr_buf_size = 0;
197 qp->rq_hdr_buf_size = 0;
198 }
199
bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)200 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
201 struct bnxt_qplib_qp *qp)
202 {
203 struct bnxt_qplib_q *rq = &qp->rq;
204 struct bnxt_qplib_q *sq = &qp->sq;
205 int rc = 0;
206
207 if (qp->sq_hdr_buf_size && sq->max_wqe) {
208 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
209 sq->max_wqe * qp->sq_hdr_buf_size,
210 &qp->sq_hdr_buf_map, GFP_KERNEL);
211 if (!qp->sq_hdr_buf) {
212 rc = -ENOMEM;
213 dev_err(&res->pdev->dev,
214 "Failed to create sq_hdr_buf\n");
215 goto fail;
216 }
217 }
218
219 if (qp->rq_hdr_buf_size && rq->max_wqe) {
220 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
221 rq->max_wqe *
222 qp->rq_hdr_buf_size,
223 &qp->rq_hdr_buf_map,
224 GFP_KERNEL);
225 if (!qp->rq_hdr_buf) {
226 rc = -ENOMEM;
227 dev_err(&res->pdev->dev,
228 "Failed to create rq_hdr_buf\n");
229 goto fail;
230 }
231 }
232 return 0;
233
234 fail:
235 bnxt_qplib_free_qp_hdr_buf(res, qp);
236 return rc;
237 }
238
clean_nq(struct bnxt_qplib_nq * nq,struct bnxt_qplib_cq * cq)239 static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq)
240 {
241 struct bnxt_qplib_hwq *hwq = &nq->hwq;
242 struct nq_base *nqe, **nq_ptr;
243 int budget = nq->budget;
244 uintptr_t q_handle;
245 u16 type;
246
247 spin_lock_bh(&hwq->lock);
248 /* Service the NQ until empty */
249 while (budget--) {
250 nq_ptr = (struct nq_base **)hwq->pbl_ptr;
251 nqe = &nq_ptr[NQE_PG(hwq->cons)][NQE_IDX(hwq->cons)];
252 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
253 break;
254
255 /*
256 * The valid test of the entry must be done first before
257 * reading any further.
258 */
259 dma_rmb();
260
261 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
262 switch (type) {
263 case NQ_BASE_TYPE_CQ_NOTIFICATION:
264 {
265 struct nq_cn *nqcne = (struct nq_cn *)nqe;
266
267 q_handle = le32_to_cpu(nqcne->cq_handle_low);
268 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
269 << 32;
270 if ((unsigned long)cq == q_handle) {
271 nqcne->cq_handle_low = 0;
272 nqcne->cq_handle_high = 0;
273 cq->cnq_events++;
274 }
275 break;
276 }
277 default:
278 break;
279 }
280 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
281 1, &nq->nq_db.dbinfo.flags);
282 }
283 spin_unlock_bh(&hwq->lock);
284 }
285
286 /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with
287 * this CQ.
288 */
__wait_for_all_nqes(struct bnxt_qplib_cq * cq,u16 cnq_events)289 static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events)
290 {
291 u32 retry_cnt = 100;
292
293 while (retry_cnt--) {
294 if (cnq_events == cq->cnq_events)
295 return;
296 usleep_range(50, 100);
297 clean_nq(cq->nq, cq);
298 }
299 }
300
bnxt_qplib_service_nq(struct tasklet_struct * t)301 static void bnxt_qplib_service_nq(struct tasklet_struct *t)
302 {
303 struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet);
304 struct bnxt_qplib_hwq *hwq = &nq->hwq;
305 struct bnxt_qplib_cq *cq;
306 int budget = nq->budget;
307 struct nq_base *nqe;
308 uintptr_t q_handle;
309 u32 hw_polled = 0;
310 u16 type;
311
312 spin_lock_bh(&hwq->lock);
313 /* Service the NQ until empty */
314 while (budget--) {
315 nqe = bnxt_qplib_get_qe(hwq, hwq->cons, NULL);
316 if (!NQE_CMP_VALID(nqe, nq->nq_db.dbinfo.flags))
317 break;
318
319 /*
320 * The valid test of the entry must be done first before
321 * reading any further.
322 */
323 dma_rmb();
324
325 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
326 switch (type) {
327 case NQ_BASE_TYPE_CQ_NOTIFICATION:
328 {
329 struct nq_cn *nqcne = (struct nq_cn *)nqe;
330 struct bnxt_re_cq *cq_p;
331
332 q_handle = le32_to_cpu(nqcne->cq_handle_low);
333 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
334 << 32;
335 cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
336 if (!cq)
337 break;
338 cq->toggle = (le16_to_cpu(nqe->info10_type) &
339 NQ_CN_TOGGLE_MASK) >> NQ_CN_TOGGLE_SFT;
340 cq->dbinfo.toggle = cq->toggle;
341 cq_p = container_of(cq, struct bnxt_re_cq, qplib_cq);
342 if (cq_p->uctx_cq_page)
343 *((u32 *)cq_p->uctx_cq_page) = cq->toggle;
344
345 bnxt_qplib_armen_db(&cq->dbinfo,
346 DBC_DBC_TYPE_CQ_ARMENA);
347 spin_lock_bh(&cq->compl_lock);
348 atomic_set(&cq->arm_state, 0);
349 if (nq->cqn_handler(nq, (cq)))
350 dev_warn(&nq->pdev->dev,
351 "cqn - type 0x%x not handled\n", type);
352 cq->cnq_events++;
353 spin_unlock_bh(&cq->compl_lock);
354 break;
355 }
356 case NQ_BASE_TYPE_SRQ_EVENT:
357 {
358 struct bnxt_qplib_srq *srq;
359 struct bnxt_re_srq *srq_p;
360 struct nq_srq_event *nqsrqe =
361 (struct nq_srq_event *)nqe;
362
363 q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
364 q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
365 << 32;
366 srq = (struct bnxt_qplib_srq *)q_handle;
367 srq->toggle = (le16_to_cpu(nqe->info10_type) & NQ_CN_TOGGLE_MASK)
368 >> NQ_CN_TOGGLE_SFT;
369 srq->dbinfo.toggle = srq->toggle;
370 srq_p = container_of(srq, struct bnxt_re_srq, qplib_srq);
371 if (srq_p->uctx_srq_page)
372 *((u32 *)srq_p->uctx_srq_page) = srq->toggle;
373 bnxt_qplib_armen_db(&srq->dbinfo,
374 DBC_DBC_TYPE_SRQ_ARMENA);
375 if (nq->srqn_handler(nq,
376 (struct bnxt_qplib_srq *)q_handle,
377 nqsrqe->event))
378 dev_warn(&nq->pdev->dev,
379 "SRQ event 0x%x not handled\n",
380 nqsrqe->event);
381 break;
382 }
383 case NQ_BASE_TYPE_DBQ_EVENT:
384 break;
385 default:
386 dev_warn(&nq->pdev->dev,
387 "nqe with type = 0x%x not handled\n", type);
388 break;
389 }
390 hw_polled++;
391 bnxt_qplib_hwq_incr_cons(hwq->max_elements, &hwq->cons,
392 1, &nq->nq_db.dbinfo.flags);
393 }
394 if (hw_polled)
395 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
396 spin_unlock_bh(&hwq->lock);
397 }
398
399 /* bnxt_re_synchronize_nq - self polling notification queue.
400 * @nq - notification queue pointer
401 *
402 * This function will start polling entries of a given notification queue
403 * for all pending entries.
404 * This function is useful to synchronize notification entries while resources
405 * are going away.
406 */
407
bnxt_re_synchronize_nq(struct bnxt_qplib_nq * nq)408 void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq)
409 {
410 int budget = nq->budget;
411
412 nq->budget = nq->hwq.max_elements;
413 bnxt_qplib_service_nq(&nq->nq_tasklet);
414 nq->budget = budget;
415 }
416
bnxt_qplib_nq_irq(int irq,void * dev_instance)417 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
418 {
419 struct bnxt_qplib_nq *nq = dev_instance;
420 struct bnxt_qplib_hwq *hwq = &nq->hwq;
421 u32 sw_cons;
422
423 /* Prefetch the NQ element */
424 sw_cons = HWQ_CMP(hwq->cons, hwq);
425 prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL));
426
427 /* Fan out to CPU affinitized kthreads? */
428 tasklet_schedule(&nq->nq_tasklet);
429
430 return IRQ_HANDLED;
431 }
432
bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq * nq,bool kill)433 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill)
434 {
435 if (!nq->requested)
436 return;
437
438 nq->requested = false;
439 /* Mask h/w interrupt */
440 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false);
441 /* Sync with last running IRQ handler */
442 synchronize_irq(nq->msix_vec);
443 irq_set_affinity_hint(nq->msix_vec, NULL);
444 free_irq(nq->msix_vec, nq);
445 kfree(nq->name);
446 nq->name = NULL;
447
448 if (kill)
449 tasklet_kill(&nq->nq_tasklet);
450 tasklet_disable(&nq->nq_tasklet);
451 }
452
bnxt_qplib_disable_nq(struct bnxt_qplib_nq * nq)453 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
454 {
455 if (nq->cqn_wq) {
456 destroy_workqueue(nq->cqn_wq);
457 nq->cqn_wq = NULL;
458 }
459
460 /* Make sure the HW is stopped! */
461 bnxt_qplib_nq_stop_irq(nq, true);
462
463 if (nq->nq_db.reg.bar_reg) {
464 iounmap(nq->nq_db.reg.bar_reg);
465 nq->nq_db.reg.bar_reg = NULL;
466 }
467
468 nq->cqn_handler = NULL;
469 nq->srqn_handler = NULL;
470 nq->msix_vec = 0;
471 }
472
bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq * nq,int nq_indx,int msix_vector,bool need_init)473 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
474 int msix_vector, bool need_init)
475 {
476 struct bnxt_qplib_res *res = nq->res;
477 int rc;
478
479 if (nq->requested)
480 return -EFAULT;
481
482 nq->msix_vec = msix_vector;
483 if (need_init)
484 tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq);
485 else
486 tasklet_enable(&nq->nq_tasklet);
487
488 nq->name = kasprintf(GFP_KERNEL, "bnxt_re-nq-%d@pci:%s",
489 nq_indx, pci_name(res->pdev));
490 if (!nq->name)
491 return -ENOMEM;
492 rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq);
493 if (rc) {
494 kfree(nq->name);
495 nq->name = NULL;
496 tasklet_disable(&nq->nq_tasklet);
497 return rc;
498 }
499
500 cpumask_clear(&nq->mask);
501 cpumask_set_cpu(nq_indx, &nq->mask);
502 rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask);
503 if (rc) {
504 dev_warn(&nq->pdev->dev,
505 "set affinity failed; vector: %d nq_idx: %d\n",
506 nq->msix_vec, nq_indx);
507 }
508 nq->requested = true;
509 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, res->cctx, true);
510
511 return rc;
512 }
513
bnxt_qplib_map_nq_db(struct bnxt_qplib_nq * nq,u32 reg_offt)514 static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq, u32 reg_offt)
515 {
516 resource_size_t reg_base;
517 struct bnxt_qplib_nq_db *nq_db;
518 struct pci_dev *pdev;
519
520 pdev = nq->pdev;
521 nq_db = &nq->nq_db;
522
523 nq_db->dbinfo.flags = 0;
524 nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION;
525 nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id);
526 if (!nq_db->reg.bar_base) {
527 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!",
528 nq_db->reg.bar_id);
529 return -ENOMEM;
530 }
531
532 reg_base = nq_db->reg.bar_base + reg_offt;
533 /* Unconditionally map 8 bytes to support 57500 series */
534 nq_db->reg.len = 8;
535 nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len);
536 if (!nq_db->reg.bar_reg) {
537 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed",
538 nq_db->reg.bar_id);
539 return -ENOMEM;
540 }
541
542 nq_db->dbinfo.db = nq_db->reg.bar_reg;
543 nq_db->dbinfo.hwq = &nq->hwq;
544 nq_db->dbinfo.xid = nq->ring_id;
545
546 return 0;
547 }
548
bnxt_qplib_enable_nq(struct pci_dev * pdev,struct bnxt_qplib_nq * nq,int nq_idx,int msix_vector,int bar_reg_offset,cqn_handler_t cqn_handler,srqn_handler_t srqn_handler)549 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
550 int nq_idx, int msix_vector, int bar_reg_offset,
551 cqn_handler_t cqn_handler,
552 srqn_handler_t srqn_handler)
553 {
554 int rc;
555
556 nq->pdev = pdev;
557 nq->cqn_handler = cqn_handler;
558 nq->srqn_handler = srqn_handler;
559 nq->load = 0;
560
561 /* Have a task to schedule CQ notifiers in post send case */
562 nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq");
563 if (!nq->cqn_wq)
564 return -ENOMEM;
565
566 rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset);
567 if (rc)
568 goto fail;
569
570 rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true);
571 if (rc) {
572 dev_err(&nq->pdev->dev,
573 "Failed to request irq for nq-idx %d\n", nq_idx);
574 goto fail;
575 }
576
577 return 0;
578 fail:
579 bnxt_qplib_disable_nq(nq);
580 return rc;
581 }
582
bnxt_qplib_free_nq(struct bnxt_qplib_nq * nq)583 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
584 {
585 if (nq->hwq.max_elements) {
586 bnxt_qplib_free_hwq(nq->res, &nq->hwq);
587 nq->hwq.max_elements = 0;
588 }
589 }
590
bnxt_qplib_alloc_nq(struct bnxt_qplib_res * res,struct bnxt_qplib_nq * nq)591 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq)
592 {
593 struct bnxt_qplib_hwq_attr hwq_attr = {};
594 struct bnxt_qplib_sg_info sginfo = {};
595
596 nq->pdev = res->pdev;
597 nq->res = res;
598 if (!nq->hwq.max_elements ||
599 nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
600 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
601
602 sginfo.pgsize = PAGE_SIZE;
603 sginfo.pgshft = PAGE_SHIFT;
604 hwq_attr.res = res;
605 hwq_attr.sginfo = &sginfo;
606 hwq_attr.depth = nq->hwq.max_elements;
607 hwq_attr.stride = sizeof(struct nq_base);
608 hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res);
609 if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) {
610 dev_err(&nq->pdev->dev, "FP NQ allocation failed");
611 return -ENOMEM;
612 }
613 nq->budget = 8;
614 return 0;
615 }
616
617 /* SRQ */
bnxt_qplib_destroy_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)618 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
619 struct bnxt_qplib_srq *srq)
620 {
621 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
622 struct creq_destroy_srq_resp resp = {};
623 struct bnxt_qplib_cmdqmsg msg = {};
624 struct cmdq_destroy_srq req = {};
625 int rc;
626
627 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
628 CMDQ_BASE_OPCODE_DESTROY_SRQ,
629 sizeof(req));
630
631 /* Configure the request */
632 req.srq_cid = cpu_to_le32(srq->id);
633
634 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
635 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
636 kfree(srq->swq);
637 if (rc)
638 return;
639 bnxt_qplib_free_hwq(res, &srq->hwq);
640 }
641
bnxt_qplib_create_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)642 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
643 struct bnxt_qplib_srq *srq)
644 {
645 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
646 struct bnxt_qplib_hwq_attr hwq_attr = {};
647 struct creq_create_srq_resp resp = {};
648 struct bnxt_qplib_cmdqmsg msg = {};
649 struct cmdq_create_srq req = {};
650 struct bnxt_qplib_pbl *pbl;
651 u16 pg_sz_lvl;
652 int rc, idx;
653
654 hwq_attr.res = res;
655 hwq_attr.sginfo = &srq->sg_info;
656 hwq_attr.depth = srq->max_wqe;
657 hwq_attr.stride = srq->wqe_size;
658 hwq_attr.type = HWQ_TYPE_QUEUE;
659 rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr);
660 if (rc)
661 return rc;
662
663 srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
664 GFP_KERNEL);
665 if (!srq->swq) {
666 rc = -ENOMEM;
667 goto fail;
668 }
669 srq->dbinfo.flags = 0;
670 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
671 CMDQ_BASE_OPCODE_CREATE_SRQ,
672 sizeof(req));
673
674 /* Configure the request */
675 req.dpi = cpu_to_le32(srq->dpi->dpi);
676 req.srq_handle = cpu_to_le64((uintptr_t)srq);
677
678 req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
679 pbl = &srq->hwq.pbl[PBL_LVL_0];
680 pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
681 CMDQ_CREATE_SRQ_PG_SIZE_SFT);
682 pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
683 CMDQ_CREATE_SRQ_LVL_SFT;
684 req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
685 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
686 req.pd_id = cpu_to_le32(srq->pd->id);
687 req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
688
689 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
690 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
691 if (rc)
692 goto fail;
693
694 spin_lock_init(&srq->lock);
695 srq->start_idx = 0;
696 srq->last_idx = srq->hwq.max_elements - 1;
697 for (idx = 0; idx < srq->hwq.max_elements; idx++)
698 srq->swq[idx].next_idx = idx + 1;
699 srq->swq[srq->last_idx].next_idx = -1;
700
701 srq->id = le32_to_cpu(resp.xid);
702 srq->dbinfo.hwq = &srq->hwq;
703 srq->dbinfo.xid = srq->id;
704 srq->dbinfo.db = srq->dpi->dbr;
705 srq->dbinfo.max_slot = 1;
706 srq->dbinfo.priv_db = res->dpi_tbl.priv_db;
707 if (srq->threshold)
708 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
709 srq->arm_req = false;
710
711 return 0;
712 fail:
713 bnxt_qplib_free_hwq(res, &srq->hwq);
714 kfree(srq->swq);
715
716 return rc;
717 }
718
bnxt_qplib_modify_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)719 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
720 struct bnxt_qplib_srq *srq)
721 {
722 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
723 u32 count;
724
725 count = __bnxt_qplib_get_avail(srq_hwq);
726 if (count > srq->threshold) {
727 srq->arm_req = false;
728 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
729 } else {
730 /* Deferred arming */
731 srq->arm_req = true;
732 }
733
734 return 0;
735 }
736
bnxt_qplib_query_srq(struct bnxt_qplib_res * res,struct bnxt_qplib_srq * srq)737 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
738 struct bnxt_qplib_srq *srq)
739 {
740 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
741 struct creq_query_srq_resp resp = {};
742 struct bnxt_qplib_cmdqmsg msg = {};
743 struct bnxt_qplib_rcfw_sbuf sbuf;
744 struct creq_query_srq_resp_sb *sb;
745 struct cmdq_query_srq req = {};
746 int rc;
747
748 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
749 CMDQ_BASE_OPCODE_QUERY_SRQ,
750 sizeof(req));
751
752 /* Configure the request */
753 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
754 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
755 &sbuf.dma_addr, GFP_KERNEL);
756 if (!sbuf.sb)
757 return -ENOMEM;
758 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
759 req.srq_cid = cpu_to_le32(srq->id);
760 sb = sbuf.sb;
761 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
762 sizeof(resp), 0);
763 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
764 if (!rc)
765 srq->threshold = le16_to_cpu(sb->srq_limit);
766 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
767 sbuf.sb, sbuf.dma_addr);
768
769 return rc;
770 }
771
bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq * srq,struct bnxt_qplib_swqe * wqe)772 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
773 struct bnxt_qplib_swqe *wqe)
774 {
775 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
776 struct rq_wqe *srqe;
777 struct sq_sge *hw_sge;
778 u32 count = 0;
779 int i, next;
780
781 spin_lock(&srq_hwq->lock);
782 if (srq->start_idx == srq->last_idx) {
783 dev_err(&srq_hwq->pdev->dev,
784 "FP: SRQ (0x%x) is full!\n", srq->id);
785 spin_unlock(&srq_hwq->lock);
786 return -EINVAL;
787 }
788 next = srq->start_idx;
789 srq->start_idx = srq->swq[next].next_idx;
790 spin_unlock(&srq_hwq->lock);
791
792 srqe = bnxt_qplib_get_qe(srq_hwq, srq_hwq->prod, NULL);
793 memset(srqe, 0, srq->wqe_size);
794 /* Calculate wqe_size16 and data_len */
795 for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
796 i < wqe->num_sge; i++, hw_sge++) {
797 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
798 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
799 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
800 }
801 srqe->wqe_type = wqe->type;
802 srqe->flags = wqe->flags;
803 srqe->wqe_size = wqe->num_sge +
804 ((offsetof(typeof(*srqe), data) + 15) >> 4);
805 srqe->wr_id[0] = cpu_to_le32((u32)next);
806 srq->swq[next].wr_id = wqe->wr_id;
807
808 bnxt_qplib_hwq_incr_prod(&srq->dbinfo, srq_hwq, srq->dbinfo.max_slot);
809
810 spin_lock(&srq_hwq->lock);
811 count = __bnxt_qplib_get_avail(srq_hwq);
812 spin_unlock(&srq_hwq->lock);
813 /* Ring DB */
814 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
815 if (srq->arm_req == true && count > srq->threshold) {
816 srq->arm_req = false;
817 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
818 }
819
820 return 0;
821 }
822
823 /* QP */
824
bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q * que)825 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
826 {
827 int indx;
828
829 que->swq = kcalloc(que->max_sw_wqe, sizeof(*que->swq), GFP_KERNEL);
830 if (!que->swq)
831 return -ENOMEM;
832
833 que->swq_start = 0;
834 que->swq_last = que->max_sw_wqe - 1;
835 for (indx = 0; indx < que->max_sw_wqe; indx++)
836 que->swq[indx].next_idx = indx + 1;
837 que->swq[que->swq_last].next_idx = 0; /* Make it circular */
838 que->swq_last = 0;
839
840 return 0;
841 }
842
bnxt_qplib_create_qp1(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)843 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
844 {
845 struct bnxt_qplib_hwq_attr hwq_attr = {};
846 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
847 struct creq_create_qp1_resp resp = {};
848 struct bnxt_qplib_cmdqmsg msg = {};
849 struct bnxt_qplib_q *sq = &qp->sq;
850 struct bnxt_qplib_q *rq = &qp->rq;
851 struct cmdq_create_qp1 req = {};
852 struct bnxt_qplib_pbl *pbl;
853 u32 qp_flags = 0;
854 u8 pg_sz_lvl;
855 u32 tbl_indx;
856 int rc;
857
858 sq->dbinfo.flags = 0;
859 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
860 CMDQ_BASE_OPCODE_CREATE_QP1,
861 sizeof(req));
862 /* General */
863 req.type = qp->type;
864 req.dpi = cpu_to_le32(qp->dpi->dpi);
865 req.qp_handle = cpu_to_le64(qp->qp_handle);
866
867 /* SQ */
868 hwq_attr.res = res;
869 hwq_attr.sginfo = &sq->sg_info;
870 hwq_attr.stride = sizeof(struct sq_sge);
871 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, false);
872 hwq_attr.type = HWQ_TYPE_QUEUE;
873 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
874 if (rc)
875 return rc;
876
877 rc = bnxt_qplib_alloc_init_swq(sq);
878 if (rc)
879 goto fail_sq;
880
881 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
882 pbl = &sq->hwq.pbl[PBL_LVL_0];
883 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
884 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
885 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
886 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
887 req.sq_pg_size_sq_lvl = pg_sz_lvl;
888 req.sq_fwo_sq_sge =
889 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
890 CMDQ_CREATE_QP1_SQ_SGE_SFT);
891 req.scq_cid = cpu_to_le32(qp->scq->id);
892
893 /* RQ */
894 if (rq->max_wqe) {
895 rq->dbinfo.flags = 0;
896 hwq_attr.res = res;
897 hwq_attr.sginfo = &rq->sg_info;
898 hwq_attr.stride = sizeof(struct sq_sge);
899 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
900 hwq_attr.type = HWQ_TYPE_QUEUE;
901 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
902 if (rc)
903 goto sq_swq;
904 rc = bnxt_qplib_alloc_init_swq(rq);
905 if (rc)
906 goto fail_rq;
907 req.rq_size = cpu_to_le32(rq->max_wqe);
908 pbl = &rq->hwq.pbl[PBL_LVL_0];
909 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
910 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
911 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
912 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
913 req.rq_pg_size_rq_lvl = pg_sz_lvl;
914 req.rq_fwo_rq_sge =
915 cpu_to_le16((rq->max_sge &
916 CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
917 CMDQ_CREATE_QP1_RQ_SGE_SFT);
918 }
919 req.rcq_cid = cpu_to_le32(qp->rcq->id);
920 /* Header buffer - allow hdr_buf pass in */
921 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
922 if (rc) {
923 rc = -ENOMEM;
924 goto rq_rwq;
925 }
926 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
927 req.qp_flags = cpu_to_le32(qp_flags);
928 req.pd_id = cpu_to_le32(qp->pd->id);
929
930 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
931 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
932 if (rc)
933 goto fail;
934
935 qp->id = le32_to_cpu(resp.xid);
936 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
937 qp->cctx = res->cctx;
938 sq->dbinfo.hwq = &sq->hwq;
939 sq->dbinfo.xid = qp->id;
940 sq->dbinfo.db = qp->dpi->dbr;
941 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
942 if (rq->max_wqe) {
943 rq->dbinfo.hwq = &rq->hwq;
944 rq->dbinfo.xid = qp->id;
945 rq->dbinfo.db = qp->dpi->dbr;
946 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
947 }
948 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
949 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
950 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
951
952 return 0;
953
954 fail:
955 bnxt_qplib_free_qp_hdr_buf(res, qp);
956 rq_rwq:
957 kfree(rq->swq);
958 fail_rq:
959 bnxt_qplib_free_hwq(res, &rq->hwq);
960 sq_swq:
961 kfree(sq->swq);
962 fail_sq:
963 bnxt_qplib_free_hwq(res, &sq->hwq);
964 return rc;
965 }
966
bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp * qp,int size)967 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
968 {
969 struct bnxt_qplib_hwq *hwq;
970 struct bnxt_qplib_q *sq;
971 u64 fpsne, psn_pg;
972 u16 indx_pad = 0;
973
974 sq = &qp->sq;
975 hwq = &sq->hwq;
976 /* First psn entry */
977 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
978 if (!IS_ALIGNED(fpsne, PAGE_SIZE))
979 indx_pad = (fpsne & ~PAGE_MASK) / size;
980 hwq->pad_pgofft = indx_pad;
981 hwq->pad_pg = (u64 *)psn_pg;
982 hwq->pad_stride = size;
983 }
984
bnxt_qplib_create_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)985 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
986 {
987 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
988 struct bnxt_qplib_hwq_attr hwq_attr = {};
989 struct bnxt_qplib_sg_info sginfo = {};
990 struct creq_create_qp_resp resp = {};
991 struct bnxt_qplib_cmdqmsg msg = {};
992 struct bnxt_qplib_q *sq = &qp->sq;
993 struct bnxt_qplib_q *rq = &qp->rq;
994 struct cmdq_create_qp req = {};
995 int rc, req_size, psn_sz = 0;
996 struct bnxt_qplib_hwq *xrrq;
997 struct bnxt_qplib_pbl *pbl;
998 u32 qp_flags = 0;
999 u8 pg_sz_lvl;
1000 u32 tbl_indx;
1001 u16 nsge;
1002
1003 if (res->dattr)
1004 qp->is_host_msn_tbl = _is_host_msn_table(res->dattr->dev_cap_flags2);
1005
1006 sq->dbinfo.flags = 0;
1007 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1008 CMDQ_BASE_OPCODE_CREATE_QP,
1009 sizeof(req));
1010
1011 /* General */
1012 req.type = qp->type;
1013 req.dpi = cpu_to_le32(qp->dpi->dpi);
1014 req.qp_handle = cpu_to_le64(qp->qp_handle);
1015
1016 /* SQ */
1017 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
1018 psn_sz = bnxt_qplib_is_chip_gen_p5_p7(res->cctx) ?
1019 sizeof(struct sq_psn_search_ext) :
1020 sizeof(struct sq_psn_search);
1021
1022 if (qp->is_host_msn_tbl) {
1023 psn_sz = sizeof(struct sq_msn_search);
1024 qp->msn = 0;
1025 }
1026 }
1027
1028 hwq_attr.res = res;
1029 hwq_attr.sginfo = &sq->sg_info;
1030 hwq_attr.stride = sizeof(struct sq_sge);
1031 hwq_attr.depth = bnxt_qplib_get_depth(sq, qp->wqe_mode, true);
1032 hwq_attr.aux_stride = psn_sz;
1033 hwq_attr.aux_depth = psn_sz ? bnxt_qplib_set_sq_size(sq, qp->wqe_mode)
1034 : 0;
1035 /* Update msn tbl size */
1036 if (qp->is_host_msn_tbl && psn_sz) {
1037 hwq_attr.aux_depth = roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1038 qp->msn_tbl_sz = hwq_attr.aux_depth;
1039 qp->msn = 0;
1040 }
1041
1042 hwq_attr.type = HWQ_TYPE_QUEUE;
1043 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
1044 if (rc)
1045 return rc;
1046
1047 rc = bnxt_qplib_alloc_init_swq(sq);
1048 if (rc)
1049 goto fail_sq;
1050
1051 if (psn_sz)
1052 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1053
1054 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1055 pbl = &sq->hwq.pbl[PBL_LVL_0];
1056 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1057 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1058 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1059 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1060 req.sq_pg_size_sq_lvl = pg_sz_lvl;
1061 req.sq_fwo_sq_sge =
1062 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1063 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1064 req.scq_cid = cpu_to_le32(qp->scq->id);
1065
1066 /* RQ */
1067 if (!qp->srq) {
1068 rq->dbinfo.flags = 0;
1069 hwq_attr.res = res;
1070 hwq_attr.sginfo = &rq->sg_info;
1071 hwq_attr.stride = sizeof(struct sq_sge);
1072 hwq_attr.depth = bnxt_qplib_get_depth(rq, qp->wqe_mode, false);
1073 hwq_attr.aux_stride = 0;
1074 hwq_attr.aux_depth = 0;
1075 hwq_attr.type = HWQ_TYPE_QUEUE;
1076 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1077 if (rc)
1078 goto sq_swq;
1079 rc = bnxt_qplib_alloc_init_swq(rq);
1080 if (rc)
1081 goto fail_rq;
1082
1083 req.rq_size = cpu_to_le32(rq->max_wqe);
1084 pbl = &rq->hwq.pbl[PBL_LVL_0];
1085 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1086 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1087 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1088 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1089 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1090 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1091 6 : rq->max_sge;
1092 req.rq_fwo_rq_sge =
1093 cpu_to_le16(((nsge &
1094 CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1095 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1096 } else {
1097 /* SRQ */
1098 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1099 req.srq_cid = cpu_to_le32(qp->srq->id);
1100 }
1101 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1102
1103 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1104 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1105 if (qp->sig_type)
1106 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1107 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1108 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1109 if (_is_ext_stats_supported(res->dattr->dev_cap_flags) && !res->is_vf)
1110 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1111
1112 req.qp_flags = cpu_to_le32(qp_flags);
1113
1114 /* ORRQ and IRRQ */
1115 if (psn_sz) {
1116 xrrq = &qp->orrq;
1117 xrrq->max_elements =
1118 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1119 req_size = xrrq->max_elements *
1120 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1121 req_size &= ~(PAGE_SIZE - 1);
1122 sginfo.pgsize = req_size;
1123 sginfo.pgshft = PAGE_SHIFT;
1124
1125 hwq_attr.res = res;
1126 hwq_attr.sginfo = &sginfo;
1127 hwq_attr.depth = xrrq->max_elements;
1128 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1129 hwq_attr.aux_stride = 0;
1130 hwq_attr.aux_depth = 0;
1131 hwq_attr.type = HWQ_TYPE_CTX;
1132 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1133 if (rc)
1134 goto rq_swq;
1135 pbl = &xrrq->pbl[PBL_LVL_0];
1136 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1137
1138 xrrq = &qp->irrq;
1139 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1140 qp->max_dest_rd_atomic);
1141 req_size = xrrq->max_elements *
1142 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1143 req_size &= ~(PAGE_SIZE - 1);
1144 sginfo.pgsize = req_size;
1145 hwq_attr.depth = xrrq->max_elements;
1146 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1147 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1148 if (rc)
1149 goto fail_orrq;
1150
1151 pbl = &xrrq->pbl[PBL_LVL_0];
1152 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1153 }
1154 req.pd_id = cpu_to_le32(qp->pd->id);
1155
1156 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1157 sizeof(resp), 0);
1158 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1159 if (rc)
1160 goto fail;
1161
1162 qp->id = le32_to_cpu(resp.xid);
1163 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1164 INIT_LIST_HEAD(&qp->sq_flush);
1165 INIT_LIST_HEAD(&qp->rq_flush);
1166 qp->cctx = res->cctx;
1167 sq->dbinfo.hwq = &sq->hwq;
1168 sq->dbinfo.xid = qp->id;
1169 sq->dbinfo.db = qp->dpi->dbr;
1170 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1171 if (rq->max_wqe) {
1172 rq->dbinfo.hwq = &rq->hwq;
1173 rq->dbinfo.xid = qp->id;
1174 rq->dbinfo.db = qp->dpi->dbr;
1175 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1176 }
1177 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1178 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1179 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
1180
1181 return 0;
1182 fail:
1183 bnxt_qplib_free_hwq(res, &qp->irrq);
1184 fail_orrq:
1185 bnxt_qplib_free_hwq(res, &qp->orrq);
1186 rq_swq:
1187 kfree(rq->swq);
1188 fail_rq:
1189 bnxt_qplib_free_hwq(res, &rq->hwq);
1190 sq_swq:
1191 kfree(sq->swq);
1192 fail_sq:
1193 bnxt_qplib_free_hwq(res, &sq->hwq);
1194 return rc;
1195 }
1196
__modify_flags_from_init_state(struct bnxt_qplib_qp * qp)1197 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1198 {
1199 switch (qp->state) {
1200 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1201 /* INIT->RTR, configure the path_mtu to the default
1202 * 2048 if not being requested
1203 */
1204 if (!(qp->modify_flags &
1205 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1206 qp->modify_flags |=
1207 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1208 qp->path_mtu =
1209 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1210 }
1211 qp->modify_flags &=
1212 ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
1213 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1214 if (qp->max_dest_rd_atomic < 1)
1215 qp->max_dest_rd_atomic = 1;
1216 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1217 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1218 if (!(qp->modify_flags &
1219 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1220 qp->modify_flags |=
1221 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1222 qp->ah.sgid_index = 0;
1223 }
1224 break;
1225 default:
1226 break;
1227 }
1228 }
1229
__modify_flags_from_rtr_state(struct bnxt_qplib_qp * qp)1230 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1231 {
1232 switch (qp->state) {
1233 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1234 /* Bono FW requires the max_rd_atomic to be >= 1 */
1235 if (qp->max_rd_atomic < 1)
1236 qp->max_rd_atomic = 1;
1237 /* Bono FW does not allow PKEY_INDEX,
1238 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1239 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1240 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1241 * modification
1242 */
1243 qp->modify_flags &=
1244 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1245 CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1246 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1247 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1248 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1249 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1250 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1251 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1252 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1253 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1254 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1255 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1256 break;
1257 default:
1258 break;
1259 }
1260 }
1261
__filter_modify_flags(struct bnxt_qplib_qp * qp)1262 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1263 {
1264 switch (qp->cur_qp_state) {
1265 case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1266 break;
1267 case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1268 __modify_flags_from_init_state(qp);
1269 break;
1270 case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1271 __modify_flags_from_rtr_state(qp);
1272 break;
1273 case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1274 break;
1275 case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1276 break;
1277 case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1278 break;
1279 case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1280 break;
1281 default:
1282 break;
1283 }
1284 }
1285
bnxt_set_mandatory_attributes(struct bnxt_qplib_qp * qp,struct cmdq_modify_qp * req)1286 static void bnxt_set_mandatory_attributes(struct bnxt_qplib_qp *qp,
1287 struct cmdq_modify_qp *req)
1288 {
1289 u32 mandatory_flags = 0;
1290
1291 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
1292 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS;
1293
1294 if (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1295 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) {
1296 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC && qp->srq)
1297 req->flags = cpu_to_le16(CMDQ_MODIFY_QP_FLAGS_SRQ_USED);
1298 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY;
1299 }
1300
1301 if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_UD ||
1302 qp->type == CMDQ_MODIFY_QP_QP_TYPE_GSI)
1303 mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY;
1304
1305 qp->modify_flags |= mandatory_flags;
1306 req->qp_type = qp->type;
1307 }
1308
is_optimized_state_transition(struct bnxt_qplib_qp * qp)1309 static bool is_optimized_state_transition(struct bnxt_qplib_qp *qp)
1310 {
1311 if ((qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
1312 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) ||
1313 (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
1314 qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS))
1315 return true;
1316
1317 return false;
1318 }
1319
bnxt_qplib_modify_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1320 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1321 {
1322 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1323 struct creq_modify_qp_resp resp = {};
1324 struct bnxt_qplib_cmdqmsg msg = {};
1325 struct cmdq_modify_qp req = {};
1326 u16 vlan_pcp_vlan_dei_vlan_id;
1327 u32 temp32[4];
1328 u32 bmask;
1329 int rc;
1330
1331 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1332 CMDQ_BASE_OPCODE_MODIFY_QP,
1333 sizeof(req));
1334
1335 /* Filter out the qp_attr_mask based on the state->new transition */
1336 __filter_modify_flags(qp);
1337 if (qp->modify_flags & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1338 /* Set mandatory attributes for INIT -> RTR and RTR -> RTS transition */
1339 if (_is_optimize_modify_qp_supported(res->dattr->dev_cap_flags2) &&
1340 is_optimized_state_transition(qp))
1341 bnxt_set_mandatory_attributes(qp, &req);
1342 }
1343 bmask = qp->modify_flags;
1344 req.modify_mask = cpu_to_le32(qp->modify_flags);
1345 req.qp_cid = cpu_to_le32(qp->id);
1346 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1347 req.network_type_en_sqd_async_notify_new_state =
1348 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1349 (qp->en_sqd_async_notify ?
1350 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1351 }
1352 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1353
1354 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1355 req.access = qp->access;
1356
1357 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1358 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1359
1360 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1361 req.qkey = cpu_to_le32(qp->qkey);
1362
1363 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1364 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1365 req.dgid[0] = cpu_to_le32(temp32[0]);
1366 req.dgid[1] = cpu_to_le32(temp32[1]);
1367 req.dgid[2] = cpu_to_le32(temp32[2]);
1368 req.dgid[3] = cpu_to_le32(temp32[3]);
1369 }
1370 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1371 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1372
1373 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1374 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1375 [qp->ah.sgid_index]);
1376
1377 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1378 req.hop_limit = qp->ah.hop_limit;
1379
1380 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1381 req.traffic_class = qp->ah.traffic_class;
1382
1383 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1384 memcpy(req.dest_mac, qp->ah.dmac, 6);
1385
1386 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1387 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1388
1389 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1390 req.timeout = qp->timeout;
1391
1392 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1393 req.retry_cnt = qp->retry_cnt;
1394
1395 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1396 req.rnr_retry = qp->rnr_retry;
1397
1398 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1399 req.min_rnr_timer = qp->min_rnr_timer;
1400
1401 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1402 req.rq_psn = cpu_to_le32(qp->rq.psn);
1403
1404 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1405 req.sq_psn = cpu_to_le32(qp->sq.psn);
1406
1407 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1408 req.max_rd_atomic =
1409 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1410
1411 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1412 req.max_dest_rd_atomic =
1413 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1414
1415 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1416 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1417 req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1418 req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1419 req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1420 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1421 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1422
1423 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID) {
1424 vlan_pcp_vlan_dei_vlan_id =
1425 ((res->sgid_tbl.tbl[qp->ah.sgid_index].vlan_id <<
1426 CMDQ_MODIFY_QP_VLAN_ID_SFT) &
1427 CMDQ_MODIFY_QP_VLAN_ID_MASK);
1428 vlan_pcp_vlan_dei_vlan_id |=
1429 ((qp->ah.sl << CMDQ_MODIFY_QP_VLAN_PCP_SFT) &
1430 CMDQ_MODIFY_QP_VLAN_PCP_MASK);
1431 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(vlan_pcp_vlan_dei_vlan_id);
1432 }
1433
1434 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
1435 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1436 if (rc)
1437 return rc;
1438 qp->cur_qp_state = qp->state;
1439 return 0;
1440 }
1441
bnxt_qplib_query_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1442 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1443 {
1444 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1445 struct creq_query_qp_resp resp = {};
1446 struct bnxt_qplib_cmdqmsg msg = {};
1447 struct bnxt_qplib_rcfw_sbuf sbuf;
1448 struct creq_query_qp_resp_sb *sb;
1449 struct cmdq_query_qp req = {};
1450 u32 temp32[4];
1451 int i, rc;
1452
1453 sbuf.size = ALIGN(sizeof(*sb), BNXT_QPLIB_CMDQE_UNITS);
1454 sbuf.sb = dma_alloc_coherent(&rcfw->pdev->dev, sbuf.size,
1455 &sbuf.dma_addr, GFP_KERNEL);
1456 if (!sbuf.sb)
1457 return -ENOMEM;
1458 sb = sbuf.sb;
1459
1460 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1461 CMDQ_BASE_OPCODE_QUERY_QP,
1462 sizeof(req));
1463
1464 req.qp_cid = cpu_to_le32(qp->id);
1465 req.resp_size = sbuf.size / BNXT_QPLIB_CMDQE_UNITS;
1466 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, &sbuf, sizeof(req),
1467 sizeof(resp), 0);
1468 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1469 if (rc)
1470 goto bail;
1471 /* Extract the context from the side buffer */
1472 qp->state = sb->en_sqd_async_notify_state &
1473 CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1474 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1475 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY;
1476 qp->access = sb->access;
1477 qp->pkey_index = le16_to_cpu(sb->pkey);
1478 qp->qkey = le32_to_cpu(sb->qkey);
1479
1480 temp32[0] = le32_to_cpu(sb->dgid[0]);
1481 temp32[1] = le32_to_cpu(sb->dgid[1]);
1482 temp32[2] = le32_to_cpu(sb->dgid[2]);
1483 temp32[3] = le32_to_cpu(sb->dgid[3]);
1484 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1485
1486 qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1487
1488 qp->ah.sgid_index = 0;
1489 for (i = 0; i < res->sgid_tbl.max; i++) {
1490 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1491 qp->ah.sgid_index = i;
1492 break;
1493 }
1494 }
1495 if (i == res->sgid_tbl.max)
1496 dev_warn(&res->pdev->dev, "SGID not found??\n");
1497
1498 qp->ah.hop_limit = sb->hop_limit;
1499 qp->ah.traffic_class = sb->traffic_class;
1500 memcpy(qp->ah.dmac, sb->dest_mac, 6);
1501 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1502 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1503 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1504 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1505 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1506 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1507 qp->timeout = sb->timeout;
1508 qp->retry_cnt = sb->retry_cnt;
1509 qp->rnr_retry = sb->rnr_retry;
1510 qp->min_rnr_timer = sb->min_rnr_timer;
1511 qp->rq.psn = le32_to_cpu(sb->rq_psn);
1512 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1513 qp->sq.psn = le32_to_cpu(sb->sq_psn);
1514 qp->max_dest_rd_atomic =
1515 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1516 qp->sq.max_wqe = qp->sq.hwq.max_elements;
1517 qp->rq.max_wqe = qp->rq.hwq.max_elements;
1518 qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1519 qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1520 qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1521 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1522 memcpy(qp->smac, sb->src_mac, 6);
1523 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1524 bail:
1525 dma_free_coherent(&rcfw->pdev->dev, sbuf.size,
1526 sbuf.sb, sbuf.dma_addr);
1527 return rc;
1528 }
1529
__clean_cq(struct bnxt_qplib_cq * cq,u64 qp)1530 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1531 {
1532 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1533 u32 peek_flags, peek_cons;
1534 struct cq_base *hw_cqe;
1535 int i;
1536
1537 peek_flags = cq->dbinfo.flags;
1538 peek_cons = cq_hwq->cons;
1539 for (i = 0; i < cq_hwq->max_elements; i++) {
1540 hw_cqe = bnxt_qplib_get_qe(cq_hwq, peek_cons, NULL);
1541 if (!CQE_CMP_VALID(hw_cqe, peek_flags))
1542 continue;
1543 /*
1544 * The valid test of the entry must be done first before
1545 * reading any further.
1546 */
1547 dma_rmb();
1548 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1549 case CQ_BASE_CQE_TYPE_REQ:
1550 case CQ_BASE_CQE_TYPE_TERMINAL:
1551 {
1552 struct cq_req *cqe = (struct cq_req *)hw_cqe;
1553
1554 if (qp == le64_to_cpu(cqe->qp_handle))
1555 cqe->qp_handle = 0;
1556 break;
1557 }
1558 case CQ_BASE_CQE_TYPE_RES_RC:
1559 case CQ_BASE_CQE_TYPE_RES_UD:
1560 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1561 {
1562 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1563
1564 if (qp == le64_to_cpu(cqe->qp_handle))
1565 cqe->qp_handle = 0;
1566 break;
1567 }
1568 default:
1569 break;
1570 }
1571 bnxt_qplib_hwq_incr_cons(cq_hwq->max_elements, &peek_cons,
1572 1, &peek_flags);
1573 }
1574 }
1575
bnxt_qplib_destroy_qp(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1576 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1577 struct bnxt_qplib_qp *qp)
1578 {
1579 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1580 struct creq_destroy_qp_resp resp = {};
1581 struct bnxt_qplib_cmdqmsg msg = {};
1582 struct cmdq_destroy_qp req = {};
1583 u32 tbl_indx;
1584 int rc;
1585
1586 spin_lock_bh(&rcfw->tbl_lock);
1587 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1588 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1589 rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1590 spin_unlock_bh(&rcfw->tbl_lock);
1591
1592 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1593 CMDQ_BASE_OPCODE_DESTROY_QP,
1594 sizeof(req));
1595
1596 req.qp_cid = cpu_to_le32(qp->id);
1597 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1598 sizeof(resp), 0);
1599 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1600 if (rc) {
1601 spin_lock_bh(&rcfw->tbl_lock);
1602 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1603 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1604 spin_unlock_bh(&rcfw->tbl_lock);
1605 return rc;
1606 }
1607
1608 return 0;
1609 }
1610
bnxt_qplib_free_qp_res(struct bnxt_qplib_res * res,struct bnxt_qplib_qp * qp)1611 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1612 struct bnxt_qplib_qp *qp)
1613 {
1614 bnxt_qplib_free_qp_hdr_buf(res, qp);
1615 bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1616 kfree(qp->sq.swq);
1617
1618 bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1619 kfree(qp->rq.swq);
1620
1621 if (qp->irrq.max_elements)
1622 bnxt_qplib_free_hwq(res, &qp->irrq);
1623 if (qp->orrq.max_elements)
1624 bnxt_qplib_free_hwq(res, &qp->orrq);
1625
1626 }
1627
bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1628 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1629 struct bnxt_qplib_sge *sge)
1630 {
1631 struct bnxt_qplib_q *sq = &qp->sq;
1632 u32 sw_prod;
1633
1634 memset(sge, 0, sizeof(*sge));
1635
1636 if (qp->sq_hdr_buf) {
1637 sw_prod = sq->swq_start;
1638 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1639 sw_prod * qp->sq_hdr_buf_size);
1640 sge->lkey = 0xFFFFFFFF;
1641 sge->size = qp->sq_hdr_buf_size;
1642 return qp->sq_hdr_buf + sw_prod * sge->size;
1643 }
1644 return NULL;
1645 }
1646
bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp * qp)1647 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1648 {
1649 struct bnxt_qplib_q *rq = &qp->rq;
1650
1651 return rq->swq_start;
1652 }
1653
bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp * qp,u32 index)1654 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1655 {
1656 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1657 }
1658
bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp * qp,struct bnxt_qplib_sge * sge)1659 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1660 struct bnxt_qplib_sge *sge)
1661 {
1662 struct bnxt_qplib_q *rq = &qp->rq;
1663 u32 sw_prod;
1664
1665 memset(sge, 0, sizeof(*sge));
1666
1667 if (qp->rq_hdr_buf) {
1668 sw_prod = rq->swq_start;
1669 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1670 sw_prod * qp->rq_hdr_buf_size);
1671 sge->lkey = 0xFFFFFFFF;
1672 sge->size = qp->rq_hdr_buf_size;
1673 return qp->rq_hdr_buf + sw_prod * sge->size;
1674 }
1675 return NULL;
1676 }
1677
1678 /* 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)1679 static void bnxt_qplib_fill_msn_search(struct bnxt_qplib_qp *qp,
1680 struct bnxt_qplib_swqe *wqe,
1681 struct bnxt_qplib_swq *swq)
1682 {
1683 struct sq_msn_search *msns;
1684 u32 start_psn, next_psn;
1685 u16 start_idx;
1686
1687 msns = (struct sq_msn_search *)swq->psn_search;
1688 msns->start_idx_next_psn_start_psn = 0;
1689
1690 start_psn = swq->start_psn;
1691 next_psn = swq->next_psn;
1692 start_idx = swq->slot_idx;
1693 msns->start_idx_next_psn_start_psn |=
1694 bnxt_re_update_msn_tbl(start_idx, next_psn, start_psn);
1695 qp->msn++;
1696 qp->msn %= qp->msn_tbl_sz;
1697 }
1698
bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,struct bnxt_qplib_swq * swq)1699 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1700 struct bnxt_qplib_swqe *wqe,
1701 struct bnxt_qplib_swq *swq)
1702 {
1703 struct sq_psn_search_ext *psns_ext;
1704 struct sq_psn_search *psns;
1705 u32 flg_npsn;
1706 u32 op_spsn;
1707
1708 if (!swq->psn_search)
1709 return;
1710 /* Handle MSN differently on cap flags */
1711 if (qp->is_host_msn_tbl) {
1712 bnxt_qplib_fill_msn_search(qp, wqe, swq);
1713 return;
1714 }
1715 psns = (struct sq_psn_search *)swq->psn_search;
1716 psns = swq->psn_search;
1717 psns_ext = swq->psn_ext;
1718
1719 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1720 SQ_PSN_SEARCH_START_PSN_MASK);
1721 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1722 SQ_PSN_SEARCH_OPCODE_MASK);
1723 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1724 SQ_PSN_SEARCH_NEXT_PSN_MASK);
1725
1726 if (bnxt_qplib_is_chip_gen_p5_p7(qp->cctx)) {
1727 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1728 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1729 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1730 } else {
1731 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1732 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1733 }
1734 }
1735
bnxt_qplib_put_inline(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * idx)1736 static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1737 struct bnxt_qplib_swqe *wqe,
1738 u16 *idx)
1739 {
1740 struct bnxt_qplib_hwq *hwq;
1741 int len, t_len, offt;
1742 bool pull_dst = true;
1743 void *il_dst = NULL;
1744 void *il_src = NULL;
1745 int t_cplen, cplen;
1746 int indx;
1747
1748 hwq = &qp->sq.hwq;
1749 t_len = 0;
1750 for (indx = 0; indx < wqe->num_sge; indx++) {
1751 len = wqe->sg_list[indx].size;
1752 il_src = (void *)wqe->sg_list[indx].addr;
1753 t_len += len;
1754 if (t_len > qp->max_inline_data)
1755 return -ENOMEM;
1756 while (len) {
1757 if (pull_dst) {
1758 pull_dst = false;
1759 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1760 (*idx)++;
1761 t_cplen = 0;
1762 offt = 0;
1763 }
1764 cplen = min_t(int, len, sizeof(struct sq_sge));
1765 cplen = min_t(int, cplen,
1766 (sizeof(struct sq_sge) - offt));
1767 memcpy(il_dst, il_src, cplen);
1768 t_cplen += cplen;
1769 il_src += cplen;
1770 il_dst += cplen;
1771 offt += cplen;
1772 len -= cplen;
1773 if (t_cplen == sizeof(struct sq_sge))
1774 pull_dst = true;
1775 }
1776 }
1777
1778 return t_len;
1779 }
1780
bnxt_qplib_put_sges(struct bnxt_qplib_hwq * hwq,struct bnxt_qplib_sge * ssge,u16 nsge,u16 * idx)1781 static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1782 struct bnxt_qplib_sge *ssge,
1783 u16 nsge, u16 *idx)
1784 {
1785 struct sq_sge *dsge;
1786 int indx, len = 0;
1787
1788 for (indx = 0; indx < nsge; indx++, (*idx)++) {
1789 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1790 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1791 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1792 dsge->size = cpu_to_le32(ssge[indx].size);
1793 len += ssge[indx].size;
1794 }
1795
1796 return len;
1797 }
1798
bnxt_qplib_required_slots(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe,u16 * wqe_sz,u16 * qdf,u8 mode)1799 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1800 struct bnxt_qplib_swqe *wqe,
1801 u16 *wqe_sz, u16 *qdf, u8 mode)
1802 {
1803 u32 ilsize, bytes;
1804 u16 nsge;
1805 u16 slot;
1806
1807 nsge = wqe->num_sge;
1808 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1809 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1810 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1811 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1812 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1813 bytes += sizeof(struct sq_send_hdr);
1814 }
1815
1816 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes);
1817 slot = bytes >> 4;
1818 *wqe_sz = slot;
1819 if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1820 slot = 8;
1821 return slot;
1822 }
1823
bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp * qp,struct bnxt_qplib_q * sq,struct bnxt_qplib_swq * swq,bool hw_retx)1824 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_qp *qp, struct bnxt_qplib_q *sq,
1825 struct bnxt_qplib_swq *swq, bool hw_retx)
1826 {
1827 struct bnxt_qplib_hwq *hwq;
1828 u32 pg_num, pg_indx;
1829 void *buff;
1830 u32 tail;
1831
1832 hwq = &sq->hwq;
1833 if (!hwq->pad_pg)
1834 return;
1835 tail = swq->slot_idx / sq->dbinfo.max_slot;
1836 if (hw_retx) {
1837 /* For HW retx use qp msn index */
1838 tail = qp->msn;
1839 tail %= qp->msn_tbl_sz;
1840 }
1841 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1842 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1843 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1844 swq->psn_ext = buff;
1845 swq->psn_search = buff;
1846 }
1847
bnxt_qplib_post_send_db(struct bnxt_qplib_qp * qp)1848 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1849 {
1850 struct bnxt_qplib_q *sq = &qp->sq;
1851
1852 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1853 }
1854
bnxt_qplib_post_send(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)1855 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1856 struct bnxt_qplib_swqe *wqe)
1857 {
1858 struct bnxt_qplib_nq_work *nq_work = NULL;
1859 int i, rc = 0, data_len = 0, pkt_num = 0;
1860 struct bnxt_qplib_q *sq = &qp->sq;
1861 struct bnxt_qplib_hwq *hwq;
1862 struct bnxt_qplib_swq *swq;
1863 bool sch_handler = false;
1864 u16 wqe_sz, qdf = 0;
1865 bool msn_update;
1866 void *base_hdr;
1867 void *ext_hdr;
1868 __le32 temp32;
1869 u32 wqe_idx;
1870 u32 slots;
1871 u16 idx;
1872
1873 hwq = &sq->hwq;
1874 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1875 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1876 dev_err(&hwq->pdev->dev,
1877 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1878 qp->id, qp->state);
1879 rc = -EINVAL;
1880 goto done;
1881 }
1882
1883 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1884 if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1885 dev_err(&hwq->pdev->dev,
1886 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1887 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1888 rc = -ENOMEM;
1889 goto done;
1890 }
1891
1892 swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1893 bnxt_qplib_pull_psn_buff(qp, sq, swq, qp->is_host_msn_tbl);
1894
1895 idx = 0;
1896 swq->slot_idx = hwq->prod;
1897 swq->slots = slots;
1898 swq->wr_id = wqe->wr_id;
1899 swq->type = wqe->type;
1900 swq->flags = wqe->flags;
1901 swq->start_psn = sq->psn & BTH_PSN_MASK;
1902 if (qp->sig_type)
1903 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1904
1905 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1906 sch_handler = true;
1907 dev_dbg(&hwq->pdev->dev,
1908 "%s Error QP. Scheduling for poll_cq\n", __func__);
1909 goto queue_err;
1910 }
1911
1912 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1913 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1914 memset(base_hdr, 0, sizeof(struct sq_sge));
1915 memset(ext_hdr, 0, sizeof(struct sq_sge));
1916
1917 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1918 /* Copy the inline data */
1919 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1920 else
1921 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1922 &idx);
1923 if (data_len < 0)
1924 goto queue_err;
1925 /* Make sure we update MSN table only for wired wqes */
1926 msn_update = true;
1927 /* Specifics */
1928 switch (wqe->type) {
1929 case BNXT_QPLIB_SWQE_TYPE_SEND:
1930 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1931 struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1932 struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1933 /* Assemble info for Raw Ethertype QPs */
1934
1935 sqe->wqe_type = wqe->type;
1936 sqe->flags = wqe->flags;
1937 sqe->wqe_size = wqe_sz;
1938 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1939 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1940 sqe->length = cpu_to_le32(data_len);
1941 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1942 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1943 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1944
1945 break;
1946 }
1947 fallthrough;
1948 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1949 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1950 {
1951 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1952 struct sq_send_hdr *sqe = base_hdr;
1953
1954 sqe->wqe_type = wqe->type;
1955 sqe->flags = wqe->flags;
1956 sqe->wqe_size = wqe_sz;
1957 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1958 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1959 qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1960 sqe->q_key = cpu_to_le32(wqe->send.q_key);
1961 sqe->length = cpu_to_le32(data_len);
1962 sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1963 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1964 SQ_SEND_DST_QP_MASK);
1965 ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1966 SQ_SEND_AVID_MASK);
1967 msn_update = false;
1968 } else {
1969 sqe->length = cpu_to_le32(data_len);
1970 if (qp->mtu)
1971 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1972 if (!pkt_num)
1973 pkt_num = 1;
1974 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1975 }
1976 break;
1977 }
1978 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1979 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1980 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1981 {
1982 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1983 struct sq_rdma_hdr *sqe = base_hdr;
1984
1985 sqe->wqe_type = wqe->type;
1986 sqe->flags = wqe->flags;
1987 sqe->wqe_size = wqe_sz;
1988 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1989 sqe->length = cpu_to_le32((u32)data_len);
1990 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1991 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1992 if (qp->mtu)
1993 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1994 if (!pkt_num)
1995 pkt_num = 1;
1996 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1997 break;
1998 }
1999 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
2000 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
2001 {
2002 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
2003 struct sq_atomic_hdr *sqe = base_hdr;
2004
2005 sqe->wqe_type = wqe->type;
2006 sqe->flags = wqe->flags;
2007 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
2008 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
2009 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
2010 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
2011 if (qp->mtu)
2012 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
2013 if (!pkt_num)
2014 pkt_num = 1;
2015 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
2016 break;
2017 }
2018 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
2019 {
2020 struct sq_localinvalidate *sqe = base_hdr;
2021
2022 sqe->wqe_type = wqe->type;
2023 sqe->flags = wqe->flags;
2024 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
2025 msn_update = false;
2026 break;
2027 }
2028 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
2029 {
2030 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
2031 struct sq_fr_pmr_hdr *sqe = base_hdr;
2032
2033 sqe->wqe_type = wqe->type;
2034 sqe->flags = wqe->flags;
2035 sqe->access_cntl = wqe->frmr.access_cntl |
2036 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
2037 sqe->zero_based_page_size_log =
2038 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
2039 SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
2040 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
2041 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
2042 temp32 = cpu_to_le32(wqe->frmr.length);
2043 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
2044 sqe->numlevels_pbl_page_size_log =
2045 ((wqe->frmr.pbl_pg_sz_log <<
2046 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
2047 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
2048 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
2049 SQ_FR_PMR_NUMLEVELS_MASK);
2050
2051 for (i = 0; i < wqe->frmr.page_list_len; i++)
2052 wqe->frmr.pbl_ptr[i] = cpu_to_le64(
2053 wqe->frmr.page_list[i] |
2054 PTU_PTE_VALID);
2055 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
2056 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
2057 msn_update = false;
2058
2059 break;
2060 }
2061 case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
2062 {
2063 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
2064 struct sq_bind_hdr *sqe = base_hdr;
2065
2066 sqe->wqe_type = wqe->type;
2067 sqe->flags = wqe->flags;
2068 sqe->access_cntl = wqe->bind.access_cntl;
2069 sqe->mw_type_zero_based = wqe->bind.mw_type |
2070 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
2071 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
2072 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
2073 ext_sqe->va = cpu_to_le64(wqe->bind.va);
2074 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
2075 msn_update = false;
2076 break;
2077 }
2078 default:
2079 /* Bad wqe, return error */
2080 rc = -EINVAL;
2081 goto done;
2082 }
2083 if (!qp->is_host_msn_tbl || msn_update) {
2084 swq->next_psn = sq->psn & BTH_PSN_MASK;
2085 bnxt_qplib_fill_psn_search(qp, wqe, swq);
2086 }
2087 queue_err:
2088 bnxt_qplib_swq_mod_start(sq, wqe_idx);
2089 bnxt_qplib_hwq_incr_prod(&sq->dbinfo, hwq, swq->slots);
2090 qp->wqe_cnt++;
2091 done:
2092 if (sch_handler) {
2093 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2094 if (nq_work) {
2095 nq_work->cq = qp->scq;
2096 nq_work->nq = qp->scq->nq;
2097 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2098 queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
2099 } else {
2100 dev_err(&hwq->pdev->dev,
2101 "FP: Failed to allocate SQ nq_work!\n");
2102 rc = -ENOMEM;
2103 }
2104 }
2105 return rc;
2106 }
2107
bnxt_qplib_post_recv_db(struct bnxt_qplib_qp * qp)2108 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
2109 {
2110 struct bnxt_qplib_q *rq = &qp->rq;
2111
2112 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
2113 }
2114
bnxt_qplib_post_recv(struct bnxt_qplib_qp * qp,struct bnxt_qplib_swqe * wqe)2115 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
2116 struct bnxt_qplib_swqe *wqe)
2117 {
2118 struct bnxt_qplib_nq_work *nq_work = NULL;
2119 struct bnxt_qplib_q *rq = &qp->rq;
2120 struct rq_wqe_hdr *base_hdr;
2121 struct rq_ext_hdr *ext_hdr;
2122 struct bnxt_qplib_hwq *hwq;
2123 struct bnxt_qplib_swq *swq;
2124 bool sch_handler = false;
2125 u16 wqe_sz, idx;
2126 u32 wqe_idx;
2127 int rc = 0;
2128
2129 hwq = &rq->hwq;
2130 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
2131 dev_err(&hwq->pdev->dev,
2132 "QPLIB: FP: QP (0x%x) is in the 0x%x state",
2133 qp->id, qp->state);
2134 rc = -EINVAL;
2135 goto done;
2136 }
2137
2138 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
2139 dev_err(&hwq->pdev->dev,
2140 "FP: QP (0x%x) RQ is full!\n", qp->id);
2141 rc = -EINVAL;
2142 goto done;
2143 }
2144
2145 swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
2146 swq->wr_id = wqe->wr_id;
2147 swq->slots = rq->dbinfo.max_slot;
2148
2149 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2150 sch_handler = true;
2151 dev_dbg(&hwq->pdev->dev,
2152 "%s: Error QP. Scheduling for poll_cq\n", __func__);
2153 goto queue_err;
2154 }
2155
2156 idx = 0;
2157 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2158 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2159 memset(base_hdr, 0, sizeof(struct sq_sge));
2160 memset(ext_hdr, 0, sizeof(struct sq_sge));
2161 wqe_sz = (sizeof(struct rq_wqe_hdr) +
2162 wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2163 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2164 if (!wqe->num_sge) {
2165 struct sq_sge *sge;
2166
2167 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2168 sge->size = 0;
2169 wqe_sz++;
2170 }
2171 base_hdr->wqe_type = wqe->type;
2172 base_hdr->flags = wqe->flags;
2173 base_hdr->wqe_size = wqe_sz;
2174 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2175 queue_err:
2176 bnxt_qplib_swq_mod_start(rq, wqe_idx);
2177 bnxt_qplib_hwq_incr_prod(&rq->dbinfo, hwq, swq->slots);
2178 done:
2179 if (sch_handler) {
2180 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2181 if (nq_work) {
2182 nq_work->cq = qp->rcq;
2183 nq_work->nq = qp->rcq->nq;
2184 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2185 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2186 } else {
2187 dev_err(&hwq->pdev->dev,
2188 "FP: Failed to allocate RQ nq_work!\n");
2189 rc = -ENOMEM;
2190 }
2191 }
2192
2193 return rc;
2194 }
2195
2196 /* CQ */
bnxt_qplib_create_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2197 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2198 {
2199 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2200 struct bnxt_qplib_hwq_attr hwq_attr = {};
2201 struct creq_create_cq_resp resp = {};
2202 struct bnxt_qplib_cmdqmsg msg = {};
2203 struct cmdq_create_cq req = {};
2204 struct bnxt_qplib_pbl *pbl;
2205 u32 coalescing = 0;
2206 u32 pg_sz_lvl;
2207 int rc;
2208
2209 if (!cq->dpi) {
2210 dev_err(&rcfw->pdev->dev,
2211 "FP: CREATE_CQ failed due to NULL DPI\n");
2212 return -EINVAL;
2213 }
2214
2215 cq->dbinfo.flags = 0;
2216 hwq_attr.res = res;
2217 hwq_attr.depth = cq->max_wqe;
2218 hwq_attr.stride = sizeof(struct cq_base);
2219 hwq_attr.type = HWQ_TYPE_QUEUE;
2220 hwq_attr.sginfo = &cq->sg_info;
2221 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2222 if (rc)
2223 return rc;
2224
2225 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2226 CMDQ_BASE_OPCODE_CREATE_CQ,
2227 sizeof(req));
2228
2229 req.dpi = cpu_to_le32(cq->dpi->dpi);
2230 req.cq_handle = cpu_to_le64(cq->cq_handle);
2231 req.cq_size = cpu_to_le32(cq->max_wqe);
2232
2233 if (_is_cq_coalescing_supported(res->dattr->dev_cap_flags2)) {
2234 req.flags |= cpu_to_le16(CMDQ_CREATE_CQ_FLAGS_COALESCING_VALID);
2235 coalescing |= ((cq->coalescing->buf_maxtime <<
2236 CMDQ_CREATE_CQ_BUF_MAXTIME_SFT) &
2237 CMDQ_CREATE_CQ_BUF_MAXTIME_MASK);
2238 coalescing |= ((cq->coalescing->normal_maxbuf <<
2239 CMDQ_CREATE_CQ_NORMAL_MAXBUF_SFT) &
2240 CMDQ_CREATE_CQ_NORMAL_MAXBUF_MASK);
2241 coalescing |= ((cq->coalescing->during_maxbuf <<
2242 CMDQ_CREATE_CQ_DURING_MAXBUF_SFT) &
2243 CMDQ_CREATE_CQ_DURING_MAXBUF_MASK);
2244 if (cq->coalescing->en_ring_idle_mode)
2245 coalescing |= CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2246 else
2247 coalescing &= ~CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
2248 req.coalescing = cpu_to_le32(coalescing);
2249 }
2250
2251 pbl = &cq->hwq.pbl[PBL_LVL_0];
2252 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2253 CMDQ_CREATE_CQ_PG_SIZE_SFT);
2254 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2255 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2256 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2257 req.cq_fco_cnq_id = cpu_to_le32(
2258 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2259 CMDQ_CREATE_CQ_CNQ_ID_SFT);
2260 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2261 sizeof(resp), 0);
2262 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2263 if (rc)
2264 goto fail;
2265
2266 cq->id = le32_to_cpu(resp.xid);
2267 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2268 init_waitqueue_head(&cq->waitq);
2269 INIT_LIST_HEAD(&cq->sqf_head);
2270 INIT_LIST_HEAD(&cq->rqf_head);
2271 spin_lock_init(&cq->compl_lock);
2272 spin_lock_init(&cq->flush_lock);
2273
2274 cq->dbinfo.hwq = &cq->hwq;
2275 cq->dbinfo.xid = cq->id;
2276 cq->dbinfo.db = cq->dpi->dbr;
2277 cq->dbinfo.priv_db = res->dpi_tbl.priv_db;
2278 cq->dbinfo.flags = 0;
2279 cq->dbinfo.toggle = 0;
2280
2281 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2282
2283 return 0;
2284
2285 fail:
2286 bnxt_qplib_free_hwq(res, &cq->hwq);
2287 return rc;
2288 }
2289
bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2290 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2291 struct bnxt_qplib_cq *cq)
2292 {
2293 bnxt_qplib_free_hwq(res, &cq->hwq);
2294 memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2295 /* Reset only the cons bit in the flags */
2296 cq->dbinfo.flags &= ~(1UL << BNXT_QPLIB_FLAG_EPOCH_CONS_SHIFT);
2297 }
2298
bnxt_qplib_resize_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq,int new_cqes)2299 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2300 int new_cqes)
2301 {
2302 struct bnxt_qplib_hwq_attr hwq_attr = {};
2303 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2304 struct creq_resize_cq_resp resp = {};
2305 struct bnxt_qplib_cmdqmsg msg = {};
2306 struct cmdq_resize_cq req = {};
2307 struct bnxt_qplib_pbl *pbl;
2308 u32 pg_sz, lvl, new_sz;
2309 int rc;
2310
2311 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2312 CMDQ_BASE_OPCODE_RESIZE_CQ,
2313 sizeof(req));
2314 hwq_attr.sginfo = &cq->sg_info;
2315 hwq_attr.res = res;
2316 hwq_attr.depth = new_cqes;
2317 hwq_attr.stride = sizeof(struct cq_base);
2318 hwq_attr.type = HWQ_TYPE_QUEUE;
2319 rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2320 if (rc)
2321 return rc;
2322
2323 req.cq_cid = cpu_to_le32(cq->id);
2324 pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2325 pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2326 lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2327 CMDQ_RESIZE_CQ_LVL_MASK;
2328 new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2329 CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2330 req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2331 req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2332
2333 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2334 sizeof(resp), 0);
2335 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2336 return rc;
2337 }
2338
bnxt_qplib_destroy_cq(struct bnxt_qplib_res * res,struct bnxt_qplib_cq * cq)2339 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2340 {
2341 struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2342 struct creq_destroy_cq_resp resp = {};
2343 struct bnxt_qplib_cmdqmsg msg = {};
2344 struct cmdq_destroy_cq req = {};
2345 u16 total_cnq_events;
2346 int rc;
2347
2348 bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2349 CMDQ_BASE_OPCODE_DESTROY_CQ,
2350 sizeof(req));
2351
2352 req.cq_cid = cpu_to_le32(cq->id);
2353 bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2354 sizeof(resp), 0);
2355 rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2356 if (rc)
2357 return rc;
2358 total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2359 __wait_for_all_nqes(cq, total_cnq_events);
2360 bnxt_qplib_free_hwq(res, &cq->hwq);
2361 return 0;
2362 }
2363
__flush_sq(struct bnxt_qplib_q * sq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2364 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2365 struct bnxt_qplib_cqe **pcqe, int *budget)
2366 {
2367 struct bnxt_qplib_cqe *cqe;
2368 u32 start, last;
2369 int rc = 0;
2370
2371 /* Now complete all outstanding SQEs with FLUSHED_ERR */
2372 start = sq->swq_start;
2373 cqe = *pcqe;
2374 while (*budget) {
2375 last = sq->swq_last;
2376 if (start == last)
2377 break;
2378 /* Skip the FENCE WQE completions */
2379 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2380 bnxt_qplib_cancel_phantom_processing(qp);
2381 goto skip_compl;
2382 }
2383 memset(cqe, 0, sizeof(*cqe));
2384 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2385 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2386 cqe->qp_handle = (u64)(unsigned long)qp;
2387 cqe->wr_id = sq->swq[last].wr_id;
2388 cqe->src_qp = qp->id;
2389 cqe->type = sq->swq[last].type;
2390 cqe++;
2391 (*budget)--;
2392 skip_compl:
2393 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2394 sq->swq[last].slots, &sq->dbinfo.flags);
2395 sq->swq_last = sq->swq[last].next_idx;
2396 }
2397 *pcqe = cqe;
2398 if (!(*budget) && sq->swq_last != start)
2399 /* Out of budget */
2400 rc = -EAGAIN;
2401
2402 return rc;
2403 }
2404
__flush_rq(struct bnxt_qplib_q * rq,struct bnxt_qplib_qp * qp,struct bnxt_qplib_cqe ** pcqe,int * budget)2405 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2406 struct bnxt_qplib_cqe **pcqe, int *budget)
2407 {
2408 struct bnxt_qplib_cqe *cqe;
2409 u32 start, last;
2410 int opcode = 0;
2411 int rc = 0;
2412
2413 switch (qp->type) {
2414 case CMDQ_CREATE_QP1_TYPE_GSI:
2415 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2416 break;
2417 case CMDQ_CREATE_QP_TYPE_RC:
2418 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2419 break;
2420 case CMDQ_CREATE_QP_TYPE_UD:
2421 case CMDQ_CREATE_QP_TYPE_GSI:
2422 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2423 break;
2424 }
2425
2426 /* Flush the rest of the RQ */
2427 start = rq->swq_start;
2428 cqe = *pcqe;
2429 while (*budget) {
2430 last = rq->swq_last;
2431 if (last == start)
2432 break;
2433 memset(cqe, 0, sizeof(*cqe));
2434 cqe->status =
2435 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2436 cqe->opcode = opcode;
2437 cqe->qp_handle = (unsigned long)qp;
2438 cqe->wr_id = rq->swq[last].wr_id;
2439 cqe++;
2440 (*budget)--;
2441 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2442 rq->swq[last].slots, &rq->dbinfo.flags);
2443 rq->swq_last = rq->swq[last].next_idx;
2444 }
2445 *pcqe = cqe;
2446 if (!*budget && rq->swq_last != start)
2447 /* Out of budget */
2448 rc = -EAGAIN;
2449
2450 return rc;
2451 }
2452
bnxt_qplib_mark_qp_error(void * qp_handle)2453 void bnxt_qplib_mark_qp_error(void *qp_handle)
2454 {
2455 struct bnxt_qplib_qp *qp = qp_handle;
2456
2457 if (!qp)
2458 return;
2459
2460 /* Must block new posting of SQ and RQ */
2461 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2462 bnxt_qplib_cancel_phantom_processing(qp);
2463 }
2464
2465 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2466 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2467 */
do_wa9060(struct bnxt_qplib_qp * qp,struct bnxt_qplib_cq * cq,u32 cq_cons,u32 swq_last,u32 cqe_sq_cons)2468 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2469 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2470 {
2471 u32 peek_sw_cq_cons, peek_sq_cons_idx, peek_flags;
2472 struct bnxt_qplib_q *sq = &qp->sq;
2473 struct cq_req *peek_req_hwcqe;
2474 struct bnxt_qplib_qp *peek_qp;
2475 struct bnxt_qplib_q *peek_sq;
2476 struct bnxt_qplib_swq *swq;
2477 struct cq_base *peek_hwcqe;
2478 int i, rc = 0;
2479
2480 /* Normal mode */
2481 /* Check for the psn_search marking before completing */
2482 swq = &sq->swq[swq_last];
2483 if (swq->psn_search &&
2484 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2485 /* Unmark */
2486 swq->psn_search->flags_next_psn = cpu_to_le32
2487 (le32_to_cpu(swq->psn_search->flags_next_psn)
2488 & ~0x80000000);
2489 dev_dbg(&cq->hwq.pdev->dev,
2490 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2491 cq_cons, qp->id, swq_last, cqe_sq_cons);
2492 sq->condition = true;
2493 sq->send_phantom = true;
2494
2495 /* TODO: Only ARM if the previous SQE is ARMALL */
2496 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2497 rc = -EAGAIN;
2498 goto out;
2499 }
2500 if (sq->condition) {
2501 /* Peek at the completions */
2502 peek_flags = cq->dbinfo.flags;
2503 peek_sw_cq_cons = cq_cons;
2504 i = cq->hwq.max_elements;
2505 while (i--) {
2506 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2507 peek_sw_cq_cons, NULL);
2508 /* If the next hwcqe is VALID */
2509 if (CQE_CMP_VALID(peek_hwcqe, peek_flags)) {
2510 /*
2511 * The valid test of the entry must be done first before
2512 * reading any further.
2513 */
2514 dma_rmb();
2515 /* If the next hwcqe is a REQ */
2516 if ((peek_hwcqe->cqe_type_toggle &
2517 CQ_BASE_CQE_TYPE_MASK) ==
2518 CQ_BASE_CQE_TYPE_REQ) {
2519 peek_req_hwcqe = (struct cq_req *)
2520 peek_hwcqe;
2521 peek_qp = (struct bnxt_qplib_qp *)
2522 ((unsigned long)
2523 le64_to_cpu
2524 (peek_req_hwcqe->qp_handle));
2525 peek_sq = &peek_qp->sq;
2526 peek_sq_cons_idx =
2527 ((le16_to_cpu(
2528 peek_req_hwcqe->sq_cons_idx)
2529 - 1) % sq->max_wqe);
2530 /* If the hwcqe's sq's wr_id matches */
2531 if (peek_sq == sq &&
2532 sq->swq[peek_sq_cons_idx].wr_id ==
2533 BNXT_QPLIB_FENCE_WRID) {
2534 /*
2535 * Unbreak only if the phantom
2536 * comes back
2537 */
2538 dev_dbg(&cq->hwq.pdev->dev,
2539 "FP: Got Phantom CQE\n");
2540 sq->condition = false;
2541 sq->single = true;
2542 rc = 0;
2543 goto out;
2544 }
2545 }
2546 /* Valid but not the phantom, so keep looping */
2547 } else {
2548 /* Not valid yet, just exit and wait */
2549 rc = -EINVAL;
2550 goto out;
2551 }
2552 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements,
2553 &peek_sw_cq_cons,
2554 1, &peek_flags);
2555 }
2556 dev_err(&cq->hwq.pdev->dev,
2557 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2558 cq_cons, qp->id, swq_last, cqe_sq_cons);
2559 rc = -EINVAL;
2560 }
2561 out:
2562 return rc;
2563 }
2564
bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q * sq,u32 cqe_slot)2565 static int bnxt_qplib_get_cqe_sq_cons(struct bnxt_qplib_q *sq, u32 cqe_slot)
2566 {
2567 struct bnxt_qplib_hwq *sq_hwq;
2568 struct bnxt_qplib_swq *swq;
2569 int cqe_sq_cons = -1;
2570 u32 start, last;
2571
2572 sq_hwq = &sq->hwq;
2573
2574 start = sq->swq_start;
2575 last = sq->swq_last;
2576
2577 while (last != start) {
2578 swq = &sq->swq[last];
2579 if (swq->slot_idx == cqe_slot) {
2580 cqe_sq_cons = swq->next_idx;
2581 dev_err(&sq_hwq->pdev->dev, "%s: Found cons wqe = %d slot = %d\n",
2582 __func__, cqe_sq_cons, cqe_slot);
2583 break;
2584 }
2585
2586 last = swq->next_idx;
2587 }
2588 return cqe_sq_cons;
2589 }
2590
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)2591 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2592 struct cq_req *hwcqe,
2593 struct bnxt_qplib_cqe **pcqe, int *budget,
2594 u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2595 {
2596 struct bnxt_qplib_swq *swq;
2597 struct bnxt_qplib_cqe *cqe;
2598 u32 cqe_sq_cons, slot_num;
2599 struct bnxt_qplib_qp *qp;
2600 struct bnxt_qplib_q *sq;
2601 int cqe_cons;
2602 int rc = 0;
2603
2604 qp = (struct bnxt_qplib_qp *)((unsigned long)
2605 le64_to_cpu(hwcqe->qp_handle));
2606 if (!qp) {
2607 dev_err(&cq->hwq.pdev->dev,
2608 "FP: Process Req qp is NULL\n");
2609 return -EINVAL;
2610 }
2611 sq = &qp->sq;
2612
2613 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_sw_wqe;
2614 if (qp->sq.flushed) {
2615 dev_dbg(&cq->hwq.pdev->dev,
2616 "%s: QP in Flush QP = %p\n", __func__, qp);
2617 goto done;
2618 }
2619
2620 if (__is_err_cqe_for_var_wqe(qp, hwcqe->status)) {
2621 slot_num = le16_to_cpu(hwcqe->sq_cons_idx);
2622 cqe_cons = bnxt_qplib_get_cqe_sq_cons(sq, slot_num);
2623 if (cqe_cons < 0) {
2624 dev_err(&cq->hwq.pdev->dev, "%s: Wrong SQ cons cqe_slot_indx = %d\n",
2625 __func__, slot_num);
2626 goto done;
2627 }
2628 cqe_sq_cons = cqe_cons;
2629 dev_err(&cq->hwq.pdev->dev, "%s: cqe_sq_cons = %d swq_last = %d swq_start = %d\n",
2630 __func__, cqe_sq_cons, sq->swq_last, sq->swq_start);
2631 }
2632
2633 /* Require to walk the sq's swq to fabricate CQEs for all previously
2634 * signaled SWQEs due to CQE aggregation from the current sq cons
2635 * to the cqe_sq_cons
2636 */
2637 cqe = *pcqe;
2638 while (*budget) {
2639 if (sq->swq_last == cqe_sq_cons)
2640 /* Done */
2641 break;
2642
2643 swq = &sq->swq[sq->swq_last];
2644 memset(cqe, 0, sizeof(*cqe));
2645 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2646 cqe->qp_handle = (u64)(unsigned long)qp;
2647 cqe->src_qp = qp->id;
2648 cqe->wr_id = swq->wr_id;
2649 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2650 goto skip;
2651 cqe->type = swq->type;
2652
2653 /* For the last CQE, check for status. For errors, regardless
2654 * of the request being signaled or not, it must complete with
2655 * the hwcqe error status
2656 */
2657 if (swq->next_idx == cqe_sq_cons &&
2658 hwcqe->status != CQ_REQ_STATUS_OK) {
2659 cqe->status = hwcqe->status;
2660 dev_err(&cq->hwq.pdev->dev,
2661 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2662 sq->swq_last, cqe->wr_id, cqe->status);
2663 cqe++;
2664 (*budget)--;
2665 bnxt_qplib_mark_qp_error(qp);
2666 /* Add qp to flush list of the CQ */
2667 bnxt_qplib_add_flush_qp(qp);
2668 } else {
2669 /* Before we complete, do WA 9060 */
2670 if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2671 cqe_sq_cons)) {
2672 *lib_qp = qp;
2673 goto out;
2674 }
2675 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2676 cqe->status = CQ_REQ_STATUS_OK;
2677 cqe++;
2678 (*budget)--;
2679 }
2680 }
2681 skip:
2682 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
2683 swq->slots, &sq->dbinfo.flags);
2684 sq->swq_last = swq->next_idx;
2685 if (sq->single)
2686 break;
2687 }
2688 out:
2689 *pcqe = cqe;
2690 if (sq->swq_last != cqe_sq_cons) {
2691 /* Out of budget */
2692 rc = -EAGAIN;
2693 goto done;
2694 }
2695 /*
2696 * Back to normal completion mode only after it has completed all of
2697 * the WC for this CQE
2698 */
2699 sq->single = false;
2700 done:
2701 return rc;
2702 }
2703
bnxt_qplib_release_srqe(struct bnxt_qplib_srq * srq,u32 tag)2704 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2705 {
2706 spin_lock(&srq->hwq.lock);
2707 srq->swq[srq->last_idx].next_idx = (int)tag;
2708 srq->last_idx = (int)tag;
2709 srq->swq[srq->last_idx].next_idx = -1;
2710 bnxt_qplib_hwq_incr_cons(srq->hwq.max_elements, &srq->hwq.cons,
2711 srq->dbinfo.max_slot, &srq->dbinfo.flags);
2712 spin_unlock(&srq->hwq.lock);
2713 }
2714
bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq * cq,struct cq_res_rc * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2715 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2716 struct cq_res_rc *hwcqe,
2717 struct bnxt_qplib_cqe **pcqe,
2718 int *budget)
2719 {
2720 struct bnxt_qplib_srq *srq;
2721 struct bnxt_qplib_cqe *cqe;
2722 struct bnxt_qplib_qp *qp;
2723 struct bnxt_qplib_q *rq;
2724 u32 wr_id_idx;
2725
2726 qp = (struct bnxt_qplib_qp *)((unsigned long)
2727 le64_to_cpu(hwcqe->qp_handle));
2728 if (!qp) {
2729 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2730 return -EINVAL;
2731 }
2732 if (qp->rq.flushed) {
2733 dev_dbg(&cq->hwq.pdev->dev,
2734 "%s: QP in Flush QP = %p\n", __func__, qp);
2735 return 0;
2736 }
2737
2738 cqe = *pcqe;
2739 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2740 cqe->length = le32_to_cpu(hwcqe->length);
2741 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2742 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2743 cqe->flags = le16_to_cpu(hwcqe->flags);
2744 cqe->status = hwcqe->status;
2745 cqe->qp_handle = (u64)(unsigned long)qp;
2746
2747 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2748 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2749 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2750 srq = qp->srq;
2751 if (!srq)
2752 return -EINVAL;
2753 if (wr_id_idx >= srq->hwq.max_elements) {
2754 dev_err(&cq->hwq.pdev->dev,
2755 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2756 wr_id_idx, srq->hwq.max_elements);
2757 return -EINVAL;
2758 }
2759 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2760 bnxt_qplib_release_srqe(srq, wr_id_idx);
2761 cqe++;
2762 (*budget)--;
2763 *pcqe = cqe;
2764 } else {
2765 struct bnxt_qplib_swq *swq;
2766
2767 rq = &qp->rq;
2768 if (wr_id_idx > (rq->max_wqe - 1)) {
2769 dev_err(&cq->hwq.pdev->dev,
2770 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2771 wr_id_idx, rq->max_wqe);
2772 return -EINVAL;
2773 }
2774 if (wr_id_idx != rq->swq_last)
2775 return -EINVAL;
2776 swq = &rq->swq[rq->swq_last];
2777 cqe->wr_id = swq->wr_id;
2778 cqe++;
2779 (*budget)--;
2780 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2781 swq->slots, &rq->dbinfo.flags);
2782 rq->swq_last = swq->next_idx;
2783 *pcqe = cqe;
2784
2785 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2786 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2787 /* Add qp to flush list of the CQ */
2788 bnxt_qplib_add_flush_qp(qp);
2789 }
2790 }
2791
2792 return 0;
2793 }
2794
bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq * cq,struct cq_res_ud * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2795 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2796 struct cq_res_ud *hwcqe,
2797 struct bnxt_qplib_cqe **pcqe,
2798 int *budget)
2799 {
2800 struct bnxt_qplib_srq *srq;
2801 struct bnxt_qplib_cqe *cqe;
2802 struct bnxt_qplib_qp *qp;
2803 struct bnxt_qplib_q *rq;
2804 u32 wr_id_idx;
2805
2806 qp = (struct bnxt_qplib_qp *)((unsigned long)
2807 le64_to_cpu(hwcqe->qp_handle));
2808 if (!qp) {
2809 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2810 return -EINVAL;
2811 }
2812 if (qp->rq.flushed) {
2813 dev_dbg(&cq->hwq.pdev->dev,
2814 "%s: QP in Flush QP = %p\n", __func__, qp);
2815 return 0;
2816 }
2817 cqe = *pcqe;
2818 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2819 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2820 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2821 cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2822 cqe->flags = le16_to_cpu(hwcqe->flags);
2823 cqe->status = hwcqe->status;
2824 cqe->qp_handle = (u64)(unsigned long)qp;
2825 /*FIXME: Endianness fix needed for smace */
2826 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2827 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2828 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2829 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2830 ((le32_to_cpu(
2831 hwcqe->src_qp_high_srq_or_rq_wr_id) &
2832 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2833
2834 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2835 srq = qp->srq;
2836 if (!srq)
2837 return -EINVAL;
2838
2839 if (wr_id_idx >= srq->hwq.max_elements) {
2840 dev_err(&cq->hwq.pdev->dev,
2841 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2842 wr_id_idx, srq->hwq.max_elements);
2843 return -EINVAL;
2844 }
2845 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2846 bnxt_qplib_release_srqe(srq, wr_id_idx);
2847 cqe++;
2848 (*budget)--;
2849 *pcqe = cqe;
2850 } else {
2851 struct bnxt_qplib_swq *swq;
2852
2853 rq = &qp->rq;
2854 if (wr_id_idx > (rq->max_wqe - 1)) {
2855 dev_err(&cq->hwq.pdev->dev,
2856 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2857 wr_id_idx, rq->max_wqe);
2858 return -EINVAL;
2859 }
2860
2861 if (rq->swq_last != wr_id_idx)
2862 return -EINVAL;
2863 swq = &rq->swq[rq->swq_last];
2864 cqe->wr_id = swq->wr_id;
2865 cqe++;
2866 (*budget)--;
2867 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2868 swq->slots, &rq->dbinfo.flags);
2869 rq->swq_last = swq->next_idx;
2870 *pcqe = cqe;
2871
2872 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2873 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2874 /* Add qp to flush list of the CQ */
2875 bnxt_qplib_add_flush_qp(qp);
2876 }
2877 }
2878
2879 return 0;
2880 }
2881
bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq * cq)2882 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2883 {
2884 struct cq_base *hw_cqe;
2885 bool rc = true;
2886
2887 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
2888 /* Check for Valid bit. If the CQE is valid, return false */
2889 rc = !CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags);
2890 return rc;
2891 }
2892
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)2893 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2894 struct cq_res_raweth_qp1 *hwcqe,
2895 struct bnxt_qplib_cqe **pcqe,
2896 int *budget)
2897 {
2898 struct bnxt_qplib_qp *qp;
2899 struct bnxt_qplib_q *rq;
2900 struct bnxt_qplib_srq *srq;
2901 struct bnxt_qplib_cqe *cqe;
2902 u32 wr_id_idx;
2903
2904 qp = (struct bnxt_qplib_qp *)((unsigned long)
2905 le64_to_cpu(hwcqe->qp_handle));
2906 if (!qp) {
2907 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2908 return -EINVAL;
2909 }
2910 if (qp->rq.flushed) {
2911 dev_dbg(&cq->hwq.pdev->dev,
2912 "%s: QP in Flush QP = %p\n", __func__, qp);
2913 return 0;
2914 }
2915 cqe = *pcqe;
2916 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2917 cqe->flags = le16_to_cpu(hwcqe->flags);
2918 cqe->qp_handle = (u64)(unsigned long)qp;
2919
2920 wr_id_idx =
2921 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2922 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2923 cqe->src_qp = qp->id;
2924 if (qp->id == 1 && !cqe->length) {
2925 /* Add workaround for the length misdetection */
2926 cqe->length = 296;
2927 } else {
2928 cqe->length = le16_to_cpu(hwcqe->length);
2929 }
2930 cqe->pkey_index = qp->pkey_index;
2931 memcpy(cqe->smac, qp->smac, 6);
2932
2933 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2934 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2935 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2936
2937 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2938 srq = qp->srq;
2939 if (!srq) {
2940 dev_err(&cq->hwq.pdev->dev,
2941 "FP: SRQ used but not defined??\n");
2942 return -EINVAL;
2943 }
2944 if (wr_id_idx >= srq->hwq.max_elements) {
2945 dev_err(&cq->hwq.pdev->dev,
2946 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2947 wr_id_idx, srq->hwq.max_elements);
2948 return -EINVAL;
2949 }
2950 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2951 bnxt_qplib_release_srqe(srq, wr_id_idx);
2952 cqe++;
2953 (*budget)--;
2954 *pcqe = cqe;
2955 } else {
2956 struct bnxt_qplib_swq *swq;
2957
2958 rq = &qp->rq;
2959 if (wr_id_idx > (rq->max_wqe - 1)) {
2960 dev_err(&cq->hwq.pdev->dev,
2961 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2962 wr_id_idx, rq->max_wqe);
2963 return -EINVAL;
2964 }
2965 if (rq->swq_last != wr_id_idx)
2966 return -EINVAL;
2967 swq = &rq->swq[rq->swq_last];
2968 cqe->wr_id = swq->wr_id;
2969 cqe++;
2970 (*budget)--;
2971 bnxt_qplib_hwq_incr_cons(rq->hwq.max_elements, &rq->hwq.cons,
2972 swq->slots, &rq->dbinfo.flags);
2973 rq->swq_last = swq->next_idx;
2974 *pcqe = cqe;
2975
2976 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2977 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2978 /* Add qp to flush list of the CQ */
2979 bnxt_qplib_add_flush_qp(qp);
2980 }
2981 }
2982
2983 return 0;
2984 }
2985
bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq * cq,struct cq_terminal * hwcqe,struct bnxt_qplib_cqe ** pcqe,int * budget)2986 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2987 struct cq_terminal *hwcqe,
2988 struct bnxt_qplib_cqe **pcqe,
2989 int *budget)
2990 {
2991 struct bnxt_qplib_qp *qp;
2992 struct bnxt_qplib_q *sq, *rq;
2993 struct bnxt_qplib_cqe *cqe;
2994 u32 swq_last = 0, cqe_cons;
2995 int rc = 0;
2996
2997 /* Check the Status */
2998 if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2999 dev_warn(&cq->hwq.pdev->dev,
3000 "FP: CQ Process Terminal Error status = 0x%x\n",
3001 hwcqe->status);
3002
3003 qp = (struct bnxt_qplib_qp *)((unsigned long)
3004 le64_to_cpu(hwcqe->qp_handle));
3005 if (!qp)
3006 return -EINVAL;
3007
3008 /* Must block new posting of SQ and RQ */
3009 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
3010
3011 sq = &qp->sq;
3012 rq = &qp->rq;
3013
3014 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
3015 if (cqe_cons == 0xFFFF)
3016 goto do_rq;
3017 cqe_cons %= sq->max_sw_wqe;
3018
3019 if (qp->sq.flushed) {
3020 dev_dbg(&cq->hwq.pdev->dev,
3021 "%s: QP in Flush QP = %p\n", __func__, qp);
3022 goto sq_done;
3023 }
3024
3025 /* Terminal CQE can also include aggregated successful CQEs prior.
3026 * So we must complete all CQEs from the current sq's cons to the
3027 * cq_cons with status OK
3028 */
3029 cqe = *pcqe;
3030 while (*budget) {
3031 swq_last = sq->swq_last;
3032 if (swq_last == cqe_cons)
3033 break;
3034 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
3035 memset(cqe, 0, sizeof(*cqe));
3036 cqe->status = CQ_REQ_STATUS_OK;
3037 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
3038 cqe->qp_handle = (u64)(unsigned long)qp;
3039 cqe->src_qp = qp->id;
3040 cqe->wr_id = sq->swq[swq_last].wr_id;
3041 cqe->type = sq->swq[swq_last].type;
3042 cqe++;
3043 (*budget)--;
3044 }
3045 bnxt_qplib_hwq_incr_cons(sq->hwq.max_elements, &sq->hwq.cons,
3046 sq->swq[swq_last].slots, &sq->dbinfo.flags);
3047 sq->swq_last = sq->swq[swq_last].next_idx;
3048 }
3049 *pcqe = cqe;
3050 if (!(*budget) && swq_last != cqe_cons) {
3051 /* Out of budget */
3052 rc = -EAGAIN;
3053 goto sq_done;
3054 }
3055 sq_done:
3056 if (rc)
3057 return rc;
3058 do_rq:
3059 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
3060 if (cqe_cons == 0xFFFF) {
3061 goto done;
3062 } else if (cqe_cons > rq->max_wqe - 1) {
3063 dev_err(&cq->hwq.pdev->dev,
3064 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
3065 cqe_cons, rq->max_wqe);
3066 rc = -EINVAL;
3067 goto done;
3068 }
3069
3070 if (qp->rq.flushed) {
3071 dev_dbg(&cq->hwq.pdev->dev,
3072 "%s: QP in Flush QP = %p\n", __func__, qp);
3073 rc = 0;
3074 goto done;
3075 }
3076
3077 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
3078 * from the current rq->cons to the rq->prod regardless what the
3079 * rq->cons the terminal CQE indicates
3080 */
3081
3082 /* Add qp to flush list of the CQ */
3083 bnxt_qplib_add_flush_qp(qp);
3084 done:
3085 return rc;
3086 }
3087
bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq * cq,struct cq_cutoff * hwcqe)3088 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
3089 struct cq_cutoff *hwcqe)
3090 {
3091 /* Check the Status */
3092 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
3093 dev_err(&cq->hwq.pdev->dev,
3094 "FP: CQ Process Cutoff Error status = 0x%x\n",
3095 hwcqe->status);
3096 return -EINVAL;
3097 }
3098 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
3099 wake_up_interruptible(&cq->waitq);
3100
3101 return 0;
3102 }
3103
bnxt_qplib_process_flush_list(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes)3104 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
3105 struct bnxt_qplib_cqe *cqe,
3106 int num_cqes)
3107 {
3108 struct bnxt_qplib_qp *qp = NULL;
3109 u32 budget = num_cqes;
3110 unsigned long flags;
3111
3112 spin_lock_irqsave(&cq->flush_lock, flags);
3113 list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
3114 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
3115 __flush_sq(&qp->sq, qp, &cqe, &budget);
3116 }
3117
3118 list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
3119 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
3120 __flush_rq(&qp->rq, qp, &cqe, &budget);
3121 }
3122 spin_unlock_irqrestore(&cq->flush_lock, flags);
3123
3124 return num_cqes - budget;
3125 }
3126
bnxt_qplib_poll_cq(struct bnxt_qplib_cq * cq,struct bnxt_qplib_cqe * cqe,int num_cqes,struct bnxt_qplib_qp ** lib_qp)3127 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
3128 int num_cqes, struct bnxt_qplib_qp **lib_qp)
3129 {
3130 struct cq_base *hw_cqe;
3131 int budget, rc = 0;
3132 u32 hw_polled = 0;
3133 u8 type;
3134
3135 budget = num_cqes;
3136
3137 while (budget) {
3138 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, cq->hwq.cons, NULL);
3139
3140 /* Check for Valid bit */
3141 if (!CQE_CMP_VALID(hw_cqe, cq->dbinfo.flags))
3142 break;
3143
3144 /*
3145 * The valid test of the entry must be done first before
3146 * reading any further.
3147 */
3148 dma_rmb();
3149 /* From the device's respective CQE format to qplib_wc*/
3150 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
3151 switch (type) {
3152 case CQ_BASE_CQE_TYPE_REQ:
3153 rc = bnxt_qplib_cq_process_req(cq,
3154 (struct cq_req *)hw_cqe,
3155 &cqe, &budget,
3156 cq->hwq.cons, lib_qp);
3157 break;
3158 case CQ_BASE_CQE_TYPE_RES_RC:
3159 rc = bnxt_qplib_cq_process_res_rc(cq,
3160 (struct cq_res_rc *)
3161 hw_cqe, &cqe,
3162 &budget);
3163 break;
3164 case CQ_BASE_CQE_TYPE_RES_UD:
3165 rc = bnxt_qplib_cq_process_res_ud
3166 (cq, (struct cq_res_ud *)hw_cqe, &cqe,
3167 &budget);
3168 break;
3169 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
3170 rc = bnxt_qplib_cq_process_res_raweth_qp1
3171 (cq, (struct cq_res_raweth_qp1 *)
3172 hw_cqe, &cqe, &budget);
3173 break;
3174 case CQ_BASE_CQE_TYPE_TERMINAL:
3175 rc = bnxt_qplib_cq_process_terminal
3176 (cq, (struct cq_terminal *)hw_cqe,
3177 &cqe, &budget);
3178 break;
3179 case CQ_BASE_CQE_TYPE_CUT_OFF:
3180 bnxt_qplib_cq_process_cutoff
3181 (cq, (struct cq_cutoff *)hw_cqe);
3182 /* Done processing this CQ */
3183 goto exit;
3184 default:
3185 dev_err(&cq->hwq.pdev->dev,
3186 "process_cq unknown type 0x%lx\n",
3187 hw_cqe->cqe_type_toggle &
3188 CQ_BASE_CQE_TYPE_MASK);
3189 rc = -EINVAL;
3190 break;
3191 }
3192 if (rc < 0) {
3193 if (rc == -EAGAIN)
3194 break;
3195 /* Error while processing the CQE, just skip to the
3196 * next one
3197 */
3198 if (type != CQ_BASE_CQE_TYPE_TERMINAL)
3199 dev_err(&cq->hwq.pdev->dev,
3200 "process_cqe error rc = 0x%x\n", rc);
3201 }
3202 hw_polled++;
3203 bnxt_qplib_hwq_incr_cons(cq->hwq.max_elements, &cq->hwq.cons,
3204 1, &cq->dbinfo.flags);
3205
3206 }
3207 if (hw_polled)
3208 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
3209 exit:
3210 return num_cqes - budget;
3211 }
3212
bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq * cq,u32 arm_type)3213 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3214 {
3215 cq->dbinfo.toggle = cq->toggle;
3216 if (arm_type)
3217 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3218 /* Using cq->arm_state variable to track whether to issue cq handler */
3219 atomic_set(&cq->arm_state, 1);
3220 }
3221
bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp * qp)3222 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3223 {
3224 flush_workqueue(qp->scq->nq->cqn_wq);
3225 if (qp->scq != qp->rcq)
3226 flush_workqueue(qp->rcq->nq->cqn_wq);
3227 }
3228