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 50 #include "roce_hsi.h" 51 52 #include "qplib_res.h" 53 #include "qplib_rcfw.h" 54 #include "qplib_sp.h" 55 #include "qplib_fp.h" 56 57 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp); 58 59 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp) 60 { 61 qp->sq.condition = false; 62 qp->sq.send_phantom = false; 63 qp->sq.single = false; 64 } 65 66 /* Flush list */ 67 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp) 68 { 69 struct bnxt_qplib_cq *scq, *rcq; 70 71 scq = qp->scq; 72 rcq = qp->rcq; 73 74 if (!qp->sq.flushed) { 75 dev_dbg(&scq->hwq.pdev->dev, 76 "FP: Adding to SQ Flush list = %p\n", qp); 77 bnxt_qplib_cancel_phantom_processing(qp); 78 list_add_tail(&qp->sq_flush, &scq->sqf_head); 79 qp->sq.flushed = true; 80 } 81 if (!qp->srq) { 82 if (!qp->rq.flushed) { 83 dev_dbg(&rcq->hwq.pdev->dev, 84 "FP: Adding to RQ Flush list = %p\n", qp); 85 list_add_tail(&qp->rq_flush, &rcq->rqf_head); 86 qp->rq.flushed = true; 87 } 88 } 89 } 90 91 static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp, 92 unsigned long *flags) 93 __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock) 94 { 95 spin_lock_irqsave(&qp->scq->flush_lock, *flags); 96 if (qp->scq == qp->rcq) 97 __acquire(&qp->rcq->flush_lock); 98 else 99 spin_lock(&qp->rcq->flush_lock); 100 } 101 102 static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp, 103 unsigned long *flags) 104 __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock) 105 { 106 if (qp->scq == qp->rcq) 107 __release(&qp->rcq->flush_lock); 108 else 109 spin_unlock(&qp->rcq->flush_lock); 110 spin_unlock_irqrestore(&qp->scq->flush_lock, *flags); 111 } 112 113 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp) 114 { 115 unsigned long flags; 116 117 bnxt_qplib_acquire_cq_flush_locks(qp, &flags); 118 __bnxt_qplib_add_flush_qp(qp); 119 bnxt_qplib_release_cq_flush_locks(qp, &flags); 120 } 121 122 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp) 123 { 124 if (qp->sq.flushed) { 125 qp->sq.flushed = false; 126 list_del(&qp->sq_flush); 127 } 128 if (!qp->srq) { 129 if (qp->rq.flushed) { 130 qp->rq.flushed = false; 131 list_del(&qp->rq_flush); 132 } 133 } 134 } 135 136 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp) 137 { 138 unsigned long flags; 139 140 bnxt_qplib_acquire_cq_flush_locks(qp, &flags); 141 __clean_cq(qp->scq, (u64)(unsigned long)qp); 142 qp->sq.hwq.prod = 0; 143 qp->sq.hwq.cons = 0; 144 __clean_cq(qp->rcq, (u64)(unsigned long)qp); 145 qp->rq.hwq.prod = 0; 146 qp->rq.hwq.cons = 0; 147 148 __bnxt_qplib_del_flush_qp(qp); 149 bnxt_qplib_release_cq_flush_locks(qp, &flags); 150 } 151 152 static void bnxt_qpn_cqn_sched_task(struct work_struct *work) 153 { 154 struct bnxt_qplib_nq_work *nq_work = 155 container_of(work, struct bnxt_qplib_nq_work, work); 156 157 struct bnxt_qplib_cq *cq = nq_work->cq; 158 struct bnxt_qplib_nq *nq = nq_work->nq; 159 160 if (cq && nq) { 161 spin_lock_bh(&cq->compl_lock); 162 if (atomic_read(&cq->arm_state) && nq->cqn_handler) { 163 dev_dbg(&nq->pdev->dev, 164 "%s:Trigger cq = %p event nq = %p\n", 165 __func__, cq, nq); 166 nq->cqn_handler(nq, cq); 167 } 168 spin_unlock_bh(&cq->compl_lock); 169 } 170 kfree(nq_work); 171 } 172 173 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res, 174 struct bnxt_qplib_qp *qp) 175 { 176 struct bnxt_qplib_q *rq = &qp->rq; 177 struct bnxt_qplib_q *sq = &qp->sq; 178 179 if (qp->rq_hdr_buf) 180 dma_free_coherent(&res->pdev->dev, 181 rq->max_wqe * qp->rq_hdr_buf_size, 182 qp->rq_hdr_buf, qp->rq_hdr_buf_map); 183 if (qp->sq_hdr_buf) 184 dma_free_coherent(&res->pdev->dev, 185 sq->max_wqe * qp->sq_hdr_buf_size, 186 qp->sq_hdr_buf, qp->sq_hdr_buf_map); 187 qp->rq_hdr_buf = NULL; 188 qp->sq_hdr_buf = NULL; 189 qp->rq_hdr_buf_map = 0; 190 qp->sq_hdr_buf_map = 0; 191 qp->sq_hdr_buf_size = 0; 192 qp->rq_hdr_buf_size = 0; 193 } 194 195 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res, 196 struct bnxt_qplib_qp *qp) 197 { 198 struct bnxt_qplib_q *rq = &qp->rq; 199 struct bnxt_qplib_q *sq = &qp->sq; 200 int rc = 0; 201 202 if (qp->sq_hdr_buf_size && sq->max_wqe) { 203 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev, 204 sq->max_wqe * qp->sq_hdr_buf_size, 205 &qp->sq_hdr_buf_map, GFP_KERNEL); 206 if (!qp->sq_hdr_buf) { 207 rc = -ENOMEM; 208 dev_err(&res->pdev->dev, 209 "Failed to create sq_hdr_buf\n"); 210 goto fail; 211 } 212 } 213 214 if (qp->rq_hdr_buf_size && rq->max_wqe) { 215 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev, 216 rq->max_wqe * 217 qp->rq_hdr_buf_size, 218 &qp->rq_hdr_buf_map, 219 GFP_KERNEL); 220 if (!qp->rq_hdr_buf) { 221 rc = -ENOMEM; 222 dev_err(&res->pdev->dev, 223 "Failed to create rq_hdr_buf\n"); 224 goto fail; 225 } 226 } 227 return 0; 228 229 fail: 230 bnxt_qplib_free_qp_hdr_buf(res, qp); 231 return rc; 232 } 233 234 static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq) 235 { 236 struct bnxt_qplib_hwq *hwq = &nq->hwq; 237 struct nq_base *nqe, **nq_ptr; 238 int budget = nq->budget; 239 u32 sw_cons, raw_cons; 240 uintptr_t q_handle; 241 u16 type; 242 243 spin_lock_bh(&hwq->lock); 244 /* Service the NQ until empty */ 245 raw_cons = hwq->cons; 246 while (budget--) { 247 sw_cons = HWQ_CMP(raw_cons, hwq); 248 nq_ptr = (struct nq_base **)hwq->pbl_ptr; 249 nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)]; 250 if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements)) 251 break; 252 253 /* 254 * The valid test of the entry must be done first before 255 * reading any further. 256 */ 257 dma_rmb(); 258 259 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK; 260 switch (type) { 261 case NQ_BASE_TYPE_CQ_NOTIFICATION: 262 { 263 struct nq_cn *nqcne = (struct nq_cn *)nqe; 264 265 q_handle = le32_to_cpu(nqcne->cq_handle_low); 266 q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high) 267 << 32; 268 if ((unsigned long)cq == q_handle) { 269 nqcne->cq_handle_low = 0; 270 nqcne->cq_handle_high = 0; 271 cq->cnq_events++; 272 } 273 break; 274 } 275 default: 276 break; 277 } 278 raw_cons++; 279 } 280 spin_unlock_bh(&hwq->lock); 281 } 282 283 /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with 284 * this CQ. 285 */ 286 static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events) 287 { 288 u32 retry_cnt = 100; 289 290 while (retry_cnt--) { 291 if (cnq_events == cq->cnq_events) 292 return; 293 usleep_range(50, 100); 294 clean_nq(cq->nq, cq); 295 } 296 } 297 298 static void bnxt_qplib_service_nq(struct tasklet_struct *t) 299 { 300 struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet); 301 struct bnxt_qplib_hwq *hwq = &nq->hwq; 302 int num_srqne_processed = 0; 303 int num_cqne_processed = 0; 304 struct bnxt_qplib_cq *cq; 305 int budget = nq->budget; 306 u32 sw_cons, raw_cons; 307 struct nq_base *nqe; 308 uintptr_t q_handle; 309 u16 type; 310 311 spin_lock_bh(&hwq->lock); 312 /* Service the NQ until empty */ 313 raw_cons = hwq->cons; 314 while (budget--) { 315 sw_cons = HWQ_CMP(raw_cons, hwq); 316 nqe = bnxt_qplib_get_qe(hwq, sw_cons, NULL); 317 if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements)) 318 break; 319 320 /* 321 * The valid test of the entry must be done first before 322 * reading any further. 323 */ 324 dma_rmb(); 325 326 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK; 327 switch (type) { 328 case NQ_BASE_TYPE_CQ_NOTIFICATION: 329 { 330 struct nq_cn *nqcne = (struct nq_cn *)nqe; 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 bnxt_qplib_armen_db(&cq->dbinfo, 339 DBC_DBC_TYPE_CQ_ARMENA); 340 spin_lock_bh(&cq->compl_lock); 341 atomic_set(&cq->arm_state, 0); 342 if (!nq->cqn_handler(nq, (cq))) 343 num_cqne_processed++; 344 else 345 dev_warn(&nq->pdev->dev, 346 "cqn - type 0x%x not handled\n", type); 347 cq->cnq_events++; 348 spin_unlock_bh(&cq->compl_lock); 349 break; 350 } 351 case NQ_BASE_TYPE_SRQ_EVENT: 352 { 353 struct bnxt_qplib_srq *srq; 354 struct nq_srq_event *nqsrqe = 355 (struct nq_srq_event *)nqe; 356 357 q_handle = le32_to_cpu(nqsrqe->srq_handle_low); 358 q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high) 359 << 32; 360 srq = (struct bnxt_qplib_srq *)q_handle; 361 bnxt_qplib_armen_db(&srq->dbinfo, 362 DBC_DBC_TYPE_SRQ_ARMENA); 363 if (!nq->srqn_handler(nq, 364 (struct bnxt_qplib_srq *)q_handle, 365 nqsrqe->event)) 366 num_srqne_processed++; 367 else 368 dev_warn(&nq->pdev->dev, 369 "SRQ event 0x%x not handled\n", 370 nqsrqe->event); 371 break; 372 } 373 case NQ_BASE_TYPE_DBQ_EVENT: 374 break; 375 default: 376 dev_warn(&nq->pdev->dev, 377 "nqe with type = 0x%x not handled\n", type); 378 break; 379 } 380 raw_cons++; 381 } 382 if (hwq->cons != raw_cons) { 383 hwq->cons = raw_cons; 384 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true); 385 } 386 spin_unlock_bh(&hwq->lock); 387 } 388 389 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance) 390 { 391 struct bnxt_qplib_nq *nq = dev_instance; 392 struct bnxt_qplib_hwq *hwq = &nq->hwq; 393 u32 sw_cons; 394 395 /* Prefetch the NQ element */ 396 sw_cons = HWQ_CMP(hwq->cons, hwq); 397 prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); 398 399 /* Fan out to CPU affinitized kthreads? */ 400 tasklet_schedule(&nq->nq_tasklet); 401 402 return IRQ_HANDLED; 403 } 404 405 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill) 406 { 407 tasklet_disable(&nq->nq_tasklet); 408 /* Mask h/w interrupt */ 409 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false); 410 /* Sync with last running IRQ handler */ 411 synchronize_irq(nq->msix_vec); 412 if (kill) 413 tasklet_kill(&nq->nq_tasklet); 414 if (nq->requested) { 415 irq_set_affinity_hint(nq->msix_vec, NULL); 416 free_irq(nq->msix_vec, nq); 417 nq->requested = false; 418 } 419 } 420 421 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq) 422 { 423 if (nq->cqn_wq) { 424 destroy_workqueue(nq->cqn_wq); 425 nq->cqn_wq = NULL; 426 } 427 428 /* Make sure the HW is stopped! */ 429 bnxt_qplib_nq_stop_irq(nq, true); 430 431 if (nq->nq_db.reg.bar_reg) { 432 iounmap(nq->nq_db.reg.bar_reg); 433 nq->nq_db.reg.bar_reg = NULL; 434 } 435 436 nq->cqn_handler = NULL; 437 nq->srqn_handler = NULL; 438 nq->msix_vec = 0; 439 } 440 441 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, 442 int msix_vector, bool need_init) 443 { 444 int rc; 445 446 if (nq->requested) 447 return -EFAULT; 448 449 nq->msix_vec = msix_vector; 450 if (need_init) 451 tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq); 452 else 453 tasklet_enable(&nq->nq_tasklet); 454 455 snprintf(nq->name, sizeof(nq->name), "bnxt_qplib_nq-%d", nq_indx); 456 rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq); 457 if (rc) 458 return rc; 459 460 cpumask_clear(&nq->mask); 461 cpumask_set_cpu(nq_indx, &nq->mask); 462 rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask); 463 if (rc) { 464 dev_warn(&nq->pdev->dev, 465 "set affinity failed; vector: %d nq_idx: %d\n", 466 nq->msix_vec, nq_indx); 467 } 468 nq->requested = true; 469 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true); 470 471 return rc; 472 } 473 474 static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq, u32 reg_offt) 475 { 476 resource_size_t reg_base; 477 struct bnxt_qplib_nq_db *nq_db; 478 struct pci_dev *pdev; 479 int rc = 0; 480 481 pdev = nq->pdev; 482 nq_db = &nq->nq_db; 483 484 nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION; 485 nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id); 486 if (!nq_db->reg.bar_base) { 487 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!", 488 nq_db->reg.bar_id); 489 rc = -ENOMEM; 490 goto fail; 491 } 492 493 reg_base = nq_db->reg.bar_base + reg_offt; 494 /* Unconditionally map 8 bytes to support 57500 series */ 495 nq_db->reg.len = 8; 496 nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len); 497 if (!nq_db->reg.bar_reg) { 498 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed", 499 nq_db->reg.bar_id); 500 rc = -ENOMEM; 501 goto fail; 502 } 503 504 nq_db->dbinfo.db = nq_db->reg.bar_reg; 505 nq_db->dbinfo.hwq = &nq->hwq; 506 nq_db->dbinfo.xid = nq->ring_id; 507 fail: 508 return rc; 509 } 510 511 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq, 512 int nq_idx, int msix_vector, int bar_reg_offset, 513 cqn_handler_t cqn_handler, 514 srqn_handler_t srqn_handler) 515 { 516 int rc = -1; 517 518 nq->pdev = pdev; 519 nq->cqn_handler = cqn_handler; 520 nq->srqn_handler = srqn_handler; 521 522 /* Have a task to schedule CQ notifiers in post send case */ 523 nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq"); 524 if (!nq->cqn_wq) 525 return -ENOMEM; 526 527 rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset); 528 if (rc) 529 goto fail; 530 531 rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true); 532 if (rc) { 533 dev_err(&nq->pdev->dev, 534 "Failed to request irq for nq-idx %d\n", nq_idx); 535 goto fail; 536 } 537 538 return 0; 539 fail: 540 bnxt_qplib_disable_nq(nq); 541 return rc; 542 } 543 544 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq) 545 { 546 if (nq->hwq.max_elements) { 547 bnxt_qplib_free_hwq(nq->res, &nq->hwq); 548 nq->hwq.max_elements = 0; 549 } 550 } 551 552 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq) 553 { 554 struct bnxt_qplib_hwq_attr hwq_attr = {}; 555 struct bnxt_qplib_sg_info sginfo = {}; 556 557 nq->pdev = res->pdev; 558 nq->res = res; 559 if (!nq->hwq.max_elements || 560 nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT) 561 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT; 562 563 sginfo.pgsize = PAGE_SIZE; 564 sginfo.pgshft = PAGE_SHIFT; 565 hwq_attr.res = res; 566 hwq_attr.sginfo = &sginfo; 567 hwq_attr.depth = nq->hwq.max_elements; 568 hwq_attr.stride = sizeof(struct nq_base); 569 hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res); 570 if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) { 571 dev_err(&nq->pdev->dev, "FP NQ allocation failed"); 572 return -ENOMEM; 573 } 574 nq->budget = 8; 575 return 0; 576 } 577 578 /* SRQ */ 579 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res, 580 struct bnxt_qplib_srq *srq) 581 { 582 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 583 struct cmdq_destroy_srq req; 584 struct creq_destroy_srq_resp resp; 585 u16 cmd_flags = 0; 586 int rc; 587 588 RCFW_CMD_PREP(req, DESTROY_SRQ, cmd_flags); 589 590 /* Configure the request */ 591 req.srq_cid = cpu_to_le32(srq->id); 592 593 rc = bnxt_qplib_rcfw_send_message(rcfw, (struct cmdq_base *)&req, 594 (struct creq_base *)&resp, NULL, 0); 595 kfree(srq->swq); 596 if (rc) 597 return; 598 bnxt_qplib_free_hwq(res, &srq->hwq); 599 } 600 601 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res, 602 struct bnxt_qplib_srq *srq) 603 { 604 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 605 struct bnxt_qplib_hwq_attr hwq_attr = {}; 606 struct creq_create_srq_resp resp; 607 struct cmdq_create_srq req; 608 struct bnxt_qplib_pbl *pbl; 609 u16 cmd_flags = 0; 610 u16 pg_sz_lvl; 611 int rc, idx; 612 613 hwq_attr.res = res; 614 hwq_attr.sginfo = &srq->sg_info; 615 hwq_attr.depth = srq->max_wqe; 616 hwq_attr.stride = srq->wqe_size; 617 hwq_attr.type = HWQ_TYPE_QUEUE; 618 rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr); 619 if (rc) 620 goto exit; 621 622 srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq), 623 GFP_KERNEL); 624 if (!srq->swq) { 625 rc = -ENOMEM; 626 goto fail; 627 } 628 629 RCFW_CMD_PREP(req, CREATE_SRQ, cmd_flags); 630 631 /* Configure the request */ 632 req.dpi = cpu_to_le32(srq->dpi->dpi); 633 req.srq_handle = cpu_to_le64((uintptr_t)srq); 634 635 req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements); 636 pbl = &srq->hwq.pbl[PBL_LVL_0]; 637 pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) << 638 CMDQ_CREATE_SRQ_PG_SIZE_SFT); 639 pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) << 640 CMDQ_CREATE_SRQ_LVL_SFT; 641 req.pg_size_lvl = cpu_to_le16(pg_sz_lvl); 642 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]); 643 req.pd_id = cpu_to_le32(srq->pd->id); 644 req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id); 645 646 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 647 (void *)&resp, NULL, 0); 648 if (rc) 649 goto fail; 650 651 spin_lock_init(&srq->lock); 652 srq->start_idx = 0; 653 srq->last_idx = srq->hwq.max_elements - 1; 654 for (idx = 0; idx < srq->hwq.max_elements; idx++) 655 srq->swq[idx].next_idx = idx + 1; 656 srq->swq[srq->last_idx].next_idx = -1; 657 658 srq->id = le32_to_cpu(resp.xid); 659 srq->dbinfo.hwq = &srq->hwq; 660 srq->dbinfo.xid = srq->id; 661 srq->dbinfo.db = srq->dpi->dbr; 662 srq->dbinfo.max_slot = 1; 663 srq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem; 664 if (srq->threshold) 665 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA); 666 srq->arm_req = false; 667 668 return 0; 669 fail: 670 bnxt_qplib_free_hwq(res, &srq->hwq); 671 kfree(srq->swq); 672 exit: 673 return rc; 674 } 675 676 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res, 677 struct bnxt_qplib_srq *srq) 678 { 679 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq; 680 u32 sw_prod, sw_cons, count = 0; 681 682 sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); 683 sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq); 684 685 count = sw_prod > sw_cons ? sw_prod - sw_cons : 686 srq_hwq->max_elements - sw_cons + sw_prod; 687 if (count > srq->threshold) { 688 srq->arm_req = false; 689 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold); 690 } else { 691 /* Deferred arming */ 692 srq->arm_req = true; 693 } 694 695 return 0; 696 } 697 698 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res, 699 struct bnxt_qplib_srq *srq) 700 { 701 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 702 struct cmdq_query_srq req; 703 struct creq_query_srq_resp resp; 704 struct bnxt_qplib_rcfw_sbuf *sbuf; 705 struct creq_query_srq_resp_sb *sb; 706 u16 cmd_flags = 0; 707 int rc = 0; 708 709 RCFW_CMD_PREP(req, QUERY_SRQ, cmd_flags); 710 req.srq_cid = cpu_to_le32(srq->id); 711 712 /* Configure the request */ 713 sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb)); 714 if (!sbuf) 715 return -ENOMEM; 716 sb = sbuf->sb; 717 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, 718 (void *)sbuf, 0); 719 srq->threshold = le16_to_cpu(sb->srq_limit); 720 bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf); 721 722 return rc; 723 } 724 725 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq, 726 struct bnxt_qplib_swqe *wqe) 727 { 728 struct bnxt_qplib_hwq *srq_hwq = &srq->hwq; 729 struct rq_wqe *srqe; 730 struct sq_sge *hw_sge; 731 u32 sw_prod, sw_cons, count = 0; 732 int i, rc = 0, next; 733 734 spin_lock(&srq_hwq->lock); 735 if (srq->start_idx == srq->last_idx) { 736 dev_err(&srq_hwq->pdev->dev, 737 "FP: SRQ (0x%x) is full!\n", srq->id); 738 rc = -EINVAL; 739 spin_unlock(&srq_hwq->lock); 740 goto done; 741 } 742 next = srq->start_idx; 743 srq->start_idx = srq->swq[next].next_idx; 744 spin_unlock(&srq_hwq->lock); 745 746 sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); 747 srqe = bnxt_qplib_get_qe(srq_hwq, sw_prod, NULL); 748 memset(srqe, 0, srq->wqe_size); 749 /* Calculate wqe_size16 and data_len */ 750 for (i = 0, hw_sge = (struct sq_sge *)srqe->data; 751 i < wqe->num_sge; i++, hw_sge++) { 752 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr); 753 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey); 754 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size); 755 } 756 srqe->wqe_type = wqe->type; 757 srqe->flags = wqe->flags; 758 srqe->wqe_size = wqe->num_sge + 759 ((offsetof(typeof(*srqe), data) + 15) >> 4); 760 srqe->wr_id[0] = cpu_to_le32((u32)next); 761 srq->swq[next].wr_id = wqe->wr_id; 762 763 srq_hwq->prod++; 764 765 spin_lock(&srq_hwq->lock); 766 sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq); 767 /* retaining srq_hwq->cons for this logic 768 * actually the lock is only required to 769 * read srq_hwq->cons. 770 */ 771 sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq); 772 count = sw_prod > sw_cons ? sw_prod - sw_cons : 773 srq_hwq->max_elements - sw_cons + sw_prod; 774 spin_unlock(&srq_hwq->lock); 775 /* Ring DB */ 776 bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ); 777 if (srq->arm_req == true && count > srq->threshold) { 778 srq->arm_req = false; 779 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold); 780 } 781 done: 782 return rc; 783 } 784 785 /* QP */ 786 787 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que) 788 { 789 int rc = 0; 790 int indx; 791 792 que->swq = kcalloc(que->max_wqe, sizeof(*que->swq), GFP_KERNEL); 793 if (!que->swq) { 794 rc = -ENOMEM; 795 goto out; 796 } 797 798 que->swq_start = 0; 799 que->swq_last = que->max_wqe - 1; 800 for (indx = 0; indx < que->max_wqe; indx++) 801 que->swq[indx].next_idx = indx + 1; 802 que->swq[que->swq_last].next_idx = 0; /* Make it circular */ 803 que->swq_last = 0; 804 out: 805 return rc; 806 } 807 808 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) 809 { 810 struct bnxt_qplib_hwq_attr hwq_attr = {}; 811 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 812 struct bnxt_qplib_q *sq = &qp->sq; 813 struct bnxt_qplib_q *rq = &qp->rq; 814 struct creq_create_qp1_resp resp; 815 struct cmdq_create_qp1 req; 816 struct bnxt_qplib_pbl *pbl; 817 u16 cmd_flags = 0; 818 u32 qp_flags = 0; 819 u8 pg_sz_lvl; 820 u32 tbl_indx; 821 int rc; 822 823 RCFW_CMD_PREP(req, CREATE_QP1, cmd_flags); 824 825 /* General */ 826 req.type = qp->type; 827 req.dpi = cpu_to_le32(qp->dpi->dpi); 828 req.qp_handle = cpu_to_le64(qp->qp_handle); 829 830 /* SQ */ 831 hwq_attr.res = res; 832 hwq_attr.sginfo = &sq->sg_info; 833 hwq_attr.stride = sizeof(struct sq_sge); 834 hwq_attr.depth = bnxt_qplib_get_depth(sq); 835 hwq_attr.type = HWQ_TYPE_QUEUE; 836 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr); 837 if (rc) 838 goto exit; 839 840 rc = bnxt_qplib_alloc_init_swq(sq); 841 if (rc) 842 goto fail_sq; 843 844 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)); 845 pbl = &sq->hwq.pbl[PBL_LVL_0]; 846 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); 847 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) << 848 CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT); 849 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK); 850 req.sq_pg_size_sq_lvl = pg_sz_lvl; 851 req.sq_fwo_sq_sge = 852 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) << 853 CMDQ_CREATE_QP1_SQ_SGE_SFT); 854 req.scq_cid = cpu_to_le32(qp->scq->id); 855 856 /* RQ */ 857 if (rq->max_wqe) { 858 hwq_attr.res = res; 859 hwq_attr.sginfo = &rq->sg_info; 860 hwq_attr.stride = sizeof(struct sq_sge); 861 hwq_attr.depth = bnxt_qplib_get_depth(rq); 862 hwq_attr.type = HWQ_TYPE_QUEUE; 863 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr); 864 if (rc) 865 goto sq_swq; 866 rc = bnxt_qplib_alloc_init_swq(rq); 867 if (rc) 868 goto fail_rq; 869 req.rq_size = cpu_to_le32(rq->max_wqe); 870 pbl = &rq->hwq.pbl[PBL_LVL_0]; 871 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); 872 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) << 873 CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT); 874 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK); 875 req.rq_pg_size_rq_lvl = pg_sz_lvl; 876 req.rq_fwo_rq_sge = 877 cpu_to_le16((rq->max_sge & 878 CMDQ_CREATE_QP1_RQ_SGE_MASK) << 879 CMDQ_CREATE_QP1_RQ_SGE_SFT); 880 } 881 req.rcq_cid = cpu_to_le32(qp->rcq->id); 882 /* Header buffer - allow hdr_buf pass in */ 883 rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp); 884 if (rc) { 885 rc = -ENOMEM; 886 goto rq_rwq; 887 } 888 qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE; 889 req.qp_flags = cpu_to_le32(qp_flags); 890 req.pd_id = cpu_to_le32(qp->pd->id); 891 892 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 893 (void *)&resp, NULL, 0); 894 if (rc) 895 goto fail; 896 897 qp->id = le32_to_cpu(resp.xid); 898 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET; 899 qp->cctx = res->cctx; 900 sq->dbinfo.hwq = &sq->hwq; 901 sq->dbinfo.xid = qp->id; 902 sq->dbinfo.db = qp->dpi->dbr; 903 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode); 904 if (rq->max_wqe) { 905 rq->dbinfo.hwq = &rq->hwq; 906 rq->dbinfo.xid = qp->id; 907 rq->dbinfo.db = qp->dpi->dbr; 908 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size); 909 } 910 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); 911 rcfw->qp_tbl[tbl_indx].qp_id = qp->id; 912 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp; 913 914 return 0; 915 916 fail: 917 bnxt_qplib_free_qp_hdr_buf(res, qp); 918 rq_rwq: 919 kfree(rq->swq); 920 fail_rq: 921 bnxt_qplib_free_hwq(res, &rq->hwq); 922 sq_swq: 923 kfree(sq->swq); 924 fail_sq: 925 bnxt_qplib_free_hwq(res, &sq->hwq); 926 exit: 927 return rc; 928 } 929 930 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size) 931 { 932 struct bnxt_qplib_hwq *hwq; 933 struct bnxt_qplib_q *sq; 934 u64 fpsne, psn_pg; 935 u16 indx_pad = 0; 936 937 sq = &qp->sq; 938 hwq = &sq->hwq; 939 /* First psn entry */ 940 fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg); 941 if (!IS_ALIGNED(fpsne, PAGE_SIZE)) 942 indx_pad = (fpsne & ~PAGE_MASK) / size; 943 hwq->pad_pgofft = indx_pad; 944 hwq->pad_pg = (u64 *)psn_pg; 945 hwq->pad_stride = size; 946 } 947 948 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) 949 { 950 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 951 struct bnxt_qplib_hwq_attr hwq_attr = {}; 952 struct bnxt_qplib_sg_info sginfo = {}; 953 struct bnxt_qplib_q *sq = &qp->sq; 954 struct bnxt_qplib_q *rq = &qp->rq; 955 struct creq_create_qp_resp resp; 956 int rc, req_size, psn_sz = 0; 957 struct bnxt_qplib_hwq *xrrq; 958 struct bnxt_qplib_pbl *pbl; 959 struct cmdq_create_qp req; 960 u16 cmd_flags = 0; 961 u32 qp_flags = 0; 962 u8 pg_sz_lvl; 963 u32 tbl_indx; 964 u16 nsge; 965 966 RCFW_CMD_PREP(req, CREATE_QP, cmd_flags); 967 968 /* General */ 969 req.type = qp->type; 970 req.dpi = cpu_to_le32(qp->dpi->dpi); 971 req.qp_handle = cpu_to_le64(qp->qp_handle); 972 973 /* SQ */ 974 if (qp->type == CMDQ_CREATE_QP_TYPE_RC) { 975 psn_sz = bnxt_qplib_is_chip_gen_p5(res->cctx) ? 976 sizeof(struct sq_psn_search_ext) : 977 sizeof(struct sq_psn_search); 978 } 979 980 hwq_attr.res = res; 981 hwq_attr.sginfo = &sq->sg_info; 982 hwq_attr.stride = sizeof(struct sq_sge); 983 hwq_attr.depth = bnxt_qplib_get_depth(sq); 984 hwq_attr.aux_stride = psn_sz; 985 hwq_attr.aux_depth = bnxt_qplib_set_sq_size(sq, qp->wqe_mode); 986 hwq_attr.type = HWQ_TYPE_QUEUE; 987 rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr); 988 if (rc) 989 goto exit; 990 991 rc = bnxt_qplib_alloc_init_swq(sq); 992 if (rc) 993 goto fail_sq; 994 995 if (psn_sz) 996 bnxt_qplib_init_psn_ptr(qp, psn_sz); 997 998 req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)); 999 pbl = &sq->hwq.pbl[PBL_LVL_0]; 1000 req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); 1001 pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) << 1002 CMDQ_CREATE_QP_SQ_PG_SIZE_SFT); 1003 pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK); 1004 req.sq_pg_size_sq_lvl = pg_sz_lvl; 1005 req.sq_fwo_sq_sge = 1006 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) << 1007 CMDQ_CREATE_QP_SQ_SGE_SFT) | 0); 1008 req.scq_cid = cpu_to_le32(qp->scq->id); 1009 1010 /* RQ */ 1011 if (!qp->srq) { 1012 hwq_attr.res = res; 1013 hwq_attr.sginfo = &rq->sg_info; 1014 hwq_attr.stride = sizeof(struct sq_sge); 1015 hwq_attr.depth = bnxt_qplib_get_depth(rq); 1016 hwq_attr.aux_stride = 0; 1017 hwq_attr.aux_depth = 0; 1018 hwq_attr.type = HWQ_TYPE_QUEUE; 1019 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr); 1020 if (rc) 1021 goto sq_swq; 1022 rc = bnxt_qplib_alloc_init_swq(rq); 1023 if (rc) 1024 goto fail_rq; 1025 1026 req.rq_size = cpu_to_le32(rq->max_wqe); 1027 pbl = &rq->hwq.pbl[PBL_LVL_0]; 1028 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]); 1029 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) << 1030 CMDQ_CREATE_QP_RQ_PG_SIZE_SFT); 1031 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK); 1032 req.rq_pg_size_rq_lvl = pg_sz_lvl; 1033 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ? 1034 6 : rq->max_sge; 1035 req.rq_fwo_rq_sge = 1036 cpu_to_le16(((nsge & 1037 CMDQ_CREATE_QP_RQ_SGE_MASK) << 1038 CMDQ_CREATE_QP_RQ_SGE_SFT) | 0); 1039 } else { 1040 /* SRQ */ 1041 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED; 1042 req.srq_cid = cpu_to_le32(qp->srq->id); 1043 } 1044 req.rcq_cid = cpu_to_le32(qp->rcq->id); 1045 1046 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE; 1047 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED; 1048 if (qp->sig_type) 1049 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION; 1050 if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE) 1051 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED; 1052 req.qp_flags = cpu_to_le32(qp_flags); 1053 1054 /* ORRQ and IRRQ */ 1055 if (psn_sz) { 1056 xrrq = &qp->orrq; 1057 xrrq->max_elements = 1058 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic); 1059 req_size = xrrq->max_elements * 1060 BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1; 1061 req_size &= ~(PAGE_SIZE - 1); 1062 sginfo.pgsize = req_size; 1063 sginfo.pgshft = PAGE_SHIFT; 1064 1065 hwq_attr.res = res; 1066 hwq_attr.sginfo = &sginfo; 1067 hwq_attr.depth = xrrq->max_elements; 1068 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE; 1069 hwq_attr.aux_stride = 0; 1070 hwq_attr.aux_depth = 0; 1071 hwq_attr.type = HWQ_TYPE_CTX; 1072 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr); 1073 if (rc) 1074 goto rq_swq; 1075 pbl = &xrrq->pbl[PBL_LVL_0]; 1076 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]); 1077 1078 xrrq = &qp->irrq; 1079 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS( 1080 qp->max_dest_rd_atomic); 1081 req_size = xrrq->max_elements * 1082 BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1; 1083 req_size &= ~(PAGE_SIZE - 1); 1084 sginfo.pgsize = req_size; 1085 hwq_attr.depth = xrrq->max_elements; 1086 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE; 1087 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr); 1088 if (rc) 1089 goto fail_orrq; 1090 1091 pbl = &xrrq->pbl[PBL_LVL_0]; 1092 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]); 1093 } 1094 req.pd_id = cpu_to_le32(qp->pd->id); 1095 1096 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 1097 (void *)&resp, NULL, 0); 1098 if (rc) 1099 goto fail; 1100 1101 qp->id = le32_to_cpu(resp.xid); 1102 qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET; 1103 INIT_LIST_HEAD(&qp->sq_flush); 1104 INIT_LIST_HEAD(&qp->rq_flush); 1105 qp->cctx = res->cctx; 1106 sq->dbinfo.hwq = &sq->hwq; 1107 sq->dbinfo.xid = qp->id; 1108 sq->dbinfo.db = qp->dpi->dbr; 1109 sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode); 1110 if (rq->max_wqe) { 1111 rq->dbinfo.hwq = &rq->hwq; 1112 rq->dbinfo.xid = qp->id; 1113 rq->dbinfo.db = qp->dpi->dbr; 1114 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size); 1115 } 1116 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); 1117 rcfw->qp_tbl[tbl_indx].qp_id = qp->id; 1118 rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp; 1119 1120 return 0; 1121 fail: 1122 bnxt_qplib_free_hwq(res, &qp->irrq); 1123 fail_orrq: 1124 bnxt_qplib_free_hwq(res, &qp->orrq); 1125 rq_swq: 1126 kfree(rq->swq); 1127 fail_rq: 1128 bnxt_qplib_free_hwq(res, &rq->hwq); 1129 sq_swq: 1130 kfree(sq->swq); 1131 fail_sq: 1132 bnxt_qplib_free_hwq(res, &sq->hwq); 1133 exit: 1134 return rc; 1135 } 1136 1137 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp) 1138 { 1139 switch (qp->state) { 1140 case CMDQ_MODIFY_QP_NEW_STATE_RTR: 1141 /* INIT->RTR, configure the path_mtu to the default 1142 * 2048 if not being requested 1143 */ 1144 if (!(qp->modify_flags & 1145 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) { 1146 qp->modify_flags |= 1147 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; 1148 qp->path_mtu = 1149 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; 1150 } 1151 qp->modify_flags &= 1152 ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID; 1153 /* Bono FW require the max_dest_rd_atomic to be >= 1 */ 1154 if (qp->max_dest_rd_atomic < 1) 1155 qp->max_dest_rd_atomic = 1; 1156 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC; 1157 /* Bono FW 20.6.5 requires SGID_INDEX configuration */ 1158 if (!(qp->modify_flags & 1159 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) { 1160 qp->modify_flags |= 1161 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX; 1162 qp->ah.sgid_index = 0; 1163 } 1164 break; 1165 default: 1166 break; 1167 } 1168 } 1169 1170 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp) 1171 { 1172 switch (qp->state) { 1173 case CMDQ_MODIFY_QP_NEW_STATE_RTS: 1174 /* Bono FW requires the max_rd_atomic to be >= 1 */ 1175 if (qp->max_rd_atomic < 1) 1176 qp->max_rd_atomic = 1; 1177 /* Bono FW does not allow PKEY_INDEX, 1178 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT, 1179 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN, 1180 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID 1181 * modification 1182 */ 1183 qp->modify_flags &= 1184 ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY | 1185 CMDQ_MODIFY_QP_MODIFY_MASK_DGID | 1186 CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL | 1187 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX | 1188 CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT | 1189 CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS | 1190 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC | 1191 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU | 1192 CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN | 1193 CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER | 1194 CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC | 1195 CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID); 1196 break; 1197 default: 1198 break; 1199 } 1200 } 1201 1202 static void __filter_modify_flags(struct bnxt_qplib_qp *qp) 1203 { 1204 switch (qp->cur_qp_state) { 1205 case CMDQ_MODIFY_QP_NEW_STATE_RESET: 1206 break; 1207 case CMDQ_MODIFY_QP_NEW_STATE_INIT: 1208 __modify_flags_from_init_state(qp); 1209 break; 1210 case CMDQ_MODIFY_QP_NEW_STATE_RTR: 1211 __modify_flags_from_rtr_state(qp); 1212 break; 1213 case CMDQ_MODIFY_QP_NEW_STATE_RTS: 1214 break; 1215 case CMDQ_MODIFY_QP_NEW_STATE_SQD: 1216 break; 1217 case CMDQ_MODIFY_QP_NEW_STATE_SQE: 1218 break; 1219 case CMDQ_MODIFY_QP_NEW_STATE_ERR: 1220 break; 1221 default: 1222 break; 1223 } 1224 } 1225 1226 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) 1227 { 1228 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 1229 struct cmdq_modify_qp req; 1230 struct creq_modify_qp_resp resp; 1231 u16 cmd_flags = 0, pkey; 1232 u32 temp32[4]; 1233 u32 bmask; 1234 int rc; 1235 1236 RCFW_CMD_PREP(req, MODIFY_QP, cmd_flags); 1237 1238 /* Filter out the qp_attr_mask based on the state->new transition */ 1239 __filter_modify_flags(qp); 1240 bmask = qp->modify_flags; 1241 req.modify_mask = cpu_to_le32(qp->modify_flags); 1242 req.qp_cid = cpu_to_le32(qp->id); 1243 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) { 1244 req.network_type_en_sqd_async_notify_new_state = 1245 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) | 1246 (qp->en_sqd_async_notify ? 1247 CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0); 1248 } 1249 req.network_type_en_sqd_async_notify_new_state |= qp->nw_type; 1250 1251 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS) 1252 req.access = qp->access; 1253 1254 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY) { 1255 if (!bnxt_qplib_get_pkey(res, &res->pkey_tbl, 1256 qp->pkey_index, &pkey)) 1257 req.pkey = cpu_to_le16(pkey); 1258 } 1259 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY) 1260 req.qkey = cpu_to_le32(qp->qkey); 1261 1262 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) { 1263 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid)); 1264 req.dgid[0] = cpu_to_le32(temp32[0]); 1265 req.dgid[1] = cpu_to_le32(temp32[1]); 1266 req.dgid[2] = cpu_to_le32(temp32[2]); 1267 req.dgid[3] = cpu_to_le32(temp32[3]); 1268 } 1269 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL) 1270 req.flow_label = cpu_to_le32(qp->ah.flow_label); 1271 1272 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX) 1273 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id 1274 [qp->ah.sgid_index]); 1275 1276 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT) 1277 req.hop_limit = qp->ah.hop_limit; 1278 1279 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS) 1280 req.traffic_class = qp->ah.traffic_class; 1281 1282 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC) 1283 memcpy(req.dest_mac, qp->ah.dmac, 6); 1284 1285 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU) 1286 req.path_mtu = qp->path_mtu; 1287 1288 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT) 1289 req.timeout = qp->timeout; 1290 1291 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT) 1292 req.retry_cnt = qp->retry_cnt; 1293 1294 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY) 1295 req.rnr_retry = qp->rnr_retry; 1296 1297 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER) 1298 req.min_rnr_timer = qp->min_rnr_timer; 1299 1300 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN) 1301 req.rq_psn = cpu_to_le32(qp->rq.psn); 1302 1303 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN) 1304 req.sq_psn = cpu_to_le32(qp->sq.psn); 1305 1306 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC) 1307 req.max_rd_atomic = 1308 ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic); 1309 1310 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC) 1311 req.max_dest_rd_atomic = 1312 IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic); 1313 1314 req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements); 1315 req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements); 1316 req.sq_sge = cpu_to_le16(qp->sq.max_sge); 1317 req.rq_sge = cpu_to_le16(qp->rq.max_sge); 1318 req.max_inline_data = cpu_to_le32(qp->max_inline_data); 1319 if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID) 1320 req.dest_qp_id = cpu_to_le32(qp->dest_qpn); 1321 1322 req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id); 1323 1324 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 1325 (void *)&resp, NULL, 0); 1326 if (rc) 1327 return rc; 1328 qp->cur_qp_state = qp->state; 1329 return 0; 1330 } 1331 1332 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp) 1333 { 1334 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 1335 struct cmdq_query_qp req; 1336 struct creq_query_qp_resp resp; 1337 struct bnxt_qplib_rcfw_sbuf *sbuf; 1338 struct creq_query_qp_resp_sb *sb; 1339 u16 cmd_flags = 0; 1340 u32 temp32[4]; 1341 int i, rc = 0; 1342 1343 RCFW_CMD_PREP(req, QUERY_QP, cmd_flags); 1344 1345 sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb)); 1346 if (!sbuf) 1347 return -ENOMEM; 1348 sb = sbuf->sb; 1349 1350 req.qp_cid = cpu_to_le32(qp->id); 1351 req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS; 1352 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp, 1353 (void *)sbuf, 0); 1354 if (rc) 1355 goto bail; 1356 /* Extract the context from the side buffer */ 1357 qp->state = sb->en_sqd_async_notify_state & 1358 CREQ_QUERY_QP_RESP_SB_STATE_MASK; 1359 qp->en_sqd_async_notify = sb->en_sqd_async_notify_state & 1360 CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ? 1361 true : false; 1362 qp->access = sb->access; 1363 qp->pkey_index = le16_to_cpu(sb->pkey); 1364 qp->qkey = le32_to_cpu(sb->qkey); 1365 1366 temp32[0] = le32_to_cpu(sb->dgid[0]); 1367 temp32[1] = le32_to_cpu(sb->dgid[1]); 1368 temp32[2] = le32_to_cpu(sb->dgid[2]); 1369 temp32[3] = le32_to_cpu(sb->dgid[3]); 1370 memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data)); 1371 1372 qp->ah.flow_label = le32_to_cpu(sb->flow_label); 1373 1374 qp->ah.sgid_index = 0; 1375 for (i = 0; i < res->sgid_tbl.max; i++) { 1376 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) { 1377 qp->ah.sgid_index = i; 1378 break; 1379 } 1380 } 1381 if (i == res->sgid_tbl.max) 1382 dev_warn(&res->pdev->dev, "SGID not found??\n"); 1383 1384 qp->ah.hop_limit = sb->hop_limit; 1385 qp->ah.traffic_class = sb->traffic_class; 1386 memcpy(qp->ah.dmac, sb->dest_mac, 6); 1387 qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) & 1388 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >> 1389 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT; 1390 qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) & 1391 CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >> 1392 CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT; 1393 qp->timeout = sb->timeout; 1394 qp->retry_cnt = sb->retry_cnt; 1395 qp->rnr_retry = sb->rnr_retry; 1396 qp->min_rnr_timer = sb->min_rnr_timer; 1397 qp->rq.psn = le32_to_cpu(sb->rq_psn); 1398 qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic); 1399 qp->sq.psn = le32_to_cpu(sb->sq_psn); 1400 qp->max_dest_rd_atomic = 1401 IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic); 1402 qp->sq.max_wqe = qp->sq.hwq.max_elements; 1403 qp->rq.max_wqe = qp->rq.hwq.max_elements; 1404 qp->sq.max_sge = le16_to_cpu(sb->sq_sge); 1405 qp->rq.max_sge = le16_to_cpu(sb->rq_sge); 1406 qp->max_inline_data = le32_to_cpu(sb->max_inline_data); 1407 qp->dest_qpn = le32_to_cpu(sb->dest_qp_id); 1408 memcpy(qp->smac, sb->src_mac, 6); 1409 qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id); 1410 bail: 1411 bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf); 1412 return rc; 1413 } 1414 1415 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp) 1416 { 1417 struct bnxt_qplib_hwq *cq_hwq = &cq->hwq; 1418 struct cq_base *hw_cqe; 1419 int i; 1420 1421 for (i = 0; i < cq_hwq->max_elements; i++) { 1422 hw_cqe = bnxt_qplib_get_qe(cq_hwq, i, NULL); 1423 if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements)) 1424 continue; 1425 /* 1426 * The valid test of the entry must be done first before 1427 * reading any further. 1428 */ 1429 dma_rmb(); 1430 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) { 1431 case CQ_BASE_CQE_TYPE_REQ: 1432 case CQ_BASE_CQE_TYPE_TERMINAL: 1433 { 1434 struct cq_req *cqe = (struct cq_req *)hw_cqe; 1435 1436 if (qp == le64_to_cpu(cqe->qp_handle)) 1437 cqe->qp_handle = 0; 1438 break; 1439 } 1440 case CQ_BASE_CQE_TYPE_RES_RC: 1441 case CQ_BASE_CQE_TYPE_RES_UD: 1442 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: 1443 { 1444 struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe; 1445 1446 if (qp == le64_to_cpu(cqe->qp_handle)) 1447 cqe->qp_handle = 0; 1448 break; 1449 } 1450 default: 1451 break; 1452 } 1453 } 1454 } 1455 1456 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res, 1457 struct bnxt_qplib_qp *qp) 1458 { 1459 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 1460 struct cmdq_destroy_qp req; 1461 struct creq_destroy_qp_resp resp; 1462 u16 cmd_flags = 0; 1463 u32 tbl_indx; 1464 int rc; 1465 1466 tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw); 1467 rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID; 1468 rcfw->qp_tbl[tbl_indx].qp_handle = NULL; 1469 1470 RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags); 1471 1472 req.qp_cid = cpu_to_le32(qp->id); 1473 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 1474 (void *)&resp, NULL, 0); 1475 if (rc) { 1476 rcfw->qp_tbl[tbl_indx].qp_id = qp->id; 1477 rcfw->qp_tbl[tbl_indx].qp_handle = qp; 1478 return rc; 1479 } 1480 1481 return 0; 1482 } 1483 1484 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res, 1485 struct bnxt_qplib_qp *qp) 1486 { 1487 bnxt_qplib_free_qp_hdr_buf(res, qp); 1488 bnxt_qplib_free_hwq(res, &qp->sq.hwq); 1489 kfree(qp->sq.swq); 1490 1491 bnxt_qplib_free_hwq(res, &qp->rq.hwq); 1492 kfree(qp->rq.swq); 1493 1494 if (qp->irrq.max_elements) 1495 bnxt_qplib_free_hwq(res, &qp->irrq); 1496 if (qp->orrq.max_elements) 1497 bnxt_qplib_free_hwq(res, &qp->orrq); 1498 1499 } 1500 1501 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp, 1502 struct bnxt_qplib_sge *sge) 1503 { 1504 struct bnxt_qplib_q *sq = &qp->sq; 1505 u32 sw_prod; 1506 1507 memset(sge, 0, sizeof(*sge)); 1508 1509 if (qp->sq_hdr_buf) { 1510 sw_prod = sq->swq_start; 1511 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map + 1512 sw_prod * qp->sq_hdr_buf_size); 1513 sge->lkey = 0xFFFFFFFF; 1514 sge->size = qp->sq_hdr_buf_size; 1515 return qp->sq_hdr_buf + sw_prod * sge->size; 1516 } 1517 return NULL; 1518 } 1519 1520 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp) 1521 { 1522 struct bnxt_qplib_q *rq = &qp->rq; 1523 1524 return rq->swq_start; 1525 } 1526 1527 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index) 1528 { 1529 return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size); 1530 } 1531 1532 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp, 1533 struct bnxt_qplib_sge *sge) 1534 { 1535 struct bnxt_qplib_q *rq = &qp->rq; 1536 u32 sw_prod; 1537 1538 memset(sge, 0, sizeof(*sge)); 1539 1540 if (qp->rq_hdr_buf) { 1541 sw_prod = rq->swq_start; 1542 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map + 1543 sw_prod * qp->rq_hdr_buf_size); 1544 sge->lkey = 0xFFFFFFFF; 1545 sge->size = qp->rq_hdr_buf_size; 1546 return qp->rq_hdr_buf + sw_prod * sge->size; 1547 } 1548 return NULL; 1549 } 1550 1551 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp, 1552 struct bnxt_qplib_swqe *wqe, 1553 struct bnxt_qplib_swq *swq) 1554 { 1555 struct sq_psn_search_ext *psns_ext; 1556 struct sq_psn_search *psns; 1557 u32 flg_npsn; 1558 u32 op_spsn; 1559 1560 if (!swq->psn_search) 1561 return; 1562 psns = swq->psn_search; 1563 psns_ext = swq->psn_ext; 1564 1565 op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) & 1566 SQ_PSN_SEARCH_START_PSN_MASK); 1567 op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) & 1568 SQ_PSN_SEARCH_OPCODE_MASK); 1569 flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) & 1570 SQ_PSN_SEARCH_NEXT_PSN_MASK); 1571 1572 if (bnxt_qplib_is_chip_gen_p5(qp->cctx)) { 1573 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn); 1574 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn); 1575 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx); 1576 } else { 1577 psns->opcode_start_psn = cpu_to_le32(op_spsn); 1578 psns->flags_next_psn = cpu_to_le32(flg_npsn); 1579 } 1580 } 1581 1582 static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp, 1583 struct bnxt_qplib_swqe *wqe, 1584 u16 *idx) 1585 { 1586 struct bnxt_qplib_hwq *hwq; 1587 int len, t_len, offt; 1588 bool pull_dst = true; 1589 void *il_dst = NULL; 1590 void *il_src = NULL; 1591 int t_cplen, cplen; 1592 int indx; 1593 1594 hwq = &qp->sq.hwq; 1595 t_len = 0; 1596 for (indx = 0; indx < wqe->num_sge; indx++) { 1597 len = wqe->sg_list[indx].size; 1598 il_src = (void *)wqe->sg_list[indx].addr; 1599 t_len += len; 1600 if (t_len > qp->max_inline_data) 1601 goto bad; 1602 while (len) { 1603 if (pull_dst) { 1604 pull_dst = false; 1605 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx); 1606 (*idx)++; 1607 t_cplen = 0; 1608 offt = 0; 1609 } 1610 cplen = min_t(int, len, sizeof(struct sq_sge)); 1611 cplen = min_t(int, cplen, 1612 (sizeof(struct sq_sge) - offt)); 1613 memcpy(il_dst, il_src, cplen); 1614 t_cplen += cplen; 1615 il_src += cplen; 1616 il_dst += cplen; 1617 offt += cplen; 1618 len -= cplen; 1619 if (t_cplen == sizeof(struct sq_sge)) 1620 pull_dst = true; 1621 } 1622 } 1623 1624 return t_len; 1625 bad: 1626 return -ENOMEM; 1627 } 1628 1629 static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq, 1630 struct bnxt_qplib_sge *ssge, 1631 u16 nsge, u16 *idx) 1632 { 1633 struct sq_sge *dsge; 1634 int indx, len = 0; 1635 1636 for (indx = 0; indx < nsge; indx++, (*idx)++) { 1637 dsge = bnxt_qplib_get_prod_qe(hwq, *idx); 1638 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr); 1639 dsge->l_key = cpu_to_le32(ssge[indx].lkey); 1640 dsge->size = cpu_to_le32(ssge[indx].size); 1641 len += ssge[indx].size; 1642 } 1643 1644 return len; 1645 } 1646 1647 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp, 1648 struct bnxt_qplib_swqe *wqe, 1649 u16 *wqe_sz, u16 *qdf, u8 mode) 1650 { 1651 u32 ilsize, bytes; 1652 u16 nsge; 1653 u16 slot; 1654 1655 nsge = wqe->num_sge; 1656 /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */ 1657 bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge); 1658 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) { 1659 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data); 1660 bytes = ALIGN(ilsize, sizeof(struct sq_sge)); 1661 bytes += sizeof(struct sq_send_hdr); 1662 } 1663 1664 *qdf = __xlate_qfd(qp->sq.q_full_delta, bytes); 1665 slot = bytes >> 4; 1666 *wqe_sz = slot; 1667 if (mode == BNXT_QPLIB_WQE_MODE_STATIC) 1668 slot = 8; 1669 return slot; 1670 } 1671 1672 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_q *sq, 1673 struct bnxt_qplib_swq *swq) 1674 { 1675 struct bnxt_qplib_hwq *hwq; 1676 u32 pg_num, pg_indx; 1677 void *buff; 1678 u32 tail; 1679 1680 hwq = &sq->hwq; 1681 if (!hwq->pad_pg) 1682 return; 1683 tail = swq->slot_idx / sq->dbinfo.max_slot; 1684 pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride); 1685 pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride); 1686 buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride); 1687 swq->psn_ext = buff; 1688 swq->psn_search = buff; 1689 } 1690 1691 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp) 1692 { 1693 struct bnxt_qplib_q *sq = &qp->sq; 1694 1695 bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ); 1696 } 1697 1698 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, 1699 struct bnxt_qplib_swqe *wqe) 1700 { 1701 struct bnxt_qplib_nq_work *nq_work = NULL; 1702 int i, rc = 0, data_len = 0, pkt_num = 0; 1703 struct bnxt_qplib_q *sq = &qp->sq; 1704 struct bnxt_qplib_hwq *hwq; 1705 struct bnxt_qplib_swq *swq; 1706 bool sch_handler = false; 1707 u16 wqe_sz, qdf = 0; 1708 void *base_hdr; 1709 void *ext_hdr; 1710 __le32 temp32; 1711 u32 wqe_idx; 1712 u32 slots; 1713 u16 idx; 1714 1715 hwq = &sq->hwq; 1716 if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS && 1717 qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) { 1718 dev_err(&hwq->pdev->dev, 1719 "QPLIB: FP: QP (0x%x) is in the 0x%x state", 1720 qp->id, qp->state); 1721 rc = -EINVAL; 1722 goto done; 1723 } 1724 1725 slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode); 1726 if (bnxt_qplib_queue_full(sq, slots + qdf)) { 1727 dev_err(&hwq->pdev->dev, 1728 "prod = %#x cons = %#x qdepth = %#x delta = %#x\n", 1729 hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta); 1730 rc = -ENOMEM; 1731 goto done; 1732 } 1733 1734 swq = bnxt_qplib_get_swqe(sq, &wqe_idx); 1735 bnxt_qplib_pull_psn_buff(sq, swq); 1736 1737 idx = 0; 1738 swq->slot_idx = hwq->prod; 1739 swq->slots = slots; 1740 swq->wr_id = wqe->wr_id; 1741 swq->type = wqe->type; 1742 swq->flags = wqe->flags; 1743 swq->start_psn = sq->psn & BTH_PSN_MASK; 1744 if (qp->sig_type) 1745 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP; 1746 1747 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { 1748 sch_handler = true; 1749 dev_dbg(&hwq->pdev->dev, 1750 "%s Error QP. Scheduling for poll_cq\n", __func__); 1751 goto queue_err; 1752 } 1753 1754 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); 1755 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); 1756 memset(base_hdr, 0, sizeof(struct sq_sge)); 1757 memset(ext_hdr, 0, sizeof(struct sq_sge)); 1758 1759 if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) 1760 /* Copy the inline data */ 1761 data_len = bnxt_qplib_put_inline(qp, wqe, &idx); 1762 else 1763 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, 1764 &idx); 1765 if (data_len < 0) 1766 goto queue_err; 1767 /* Specifics */ 1768 switch (wqe->type) { 1769 case BNXT_QPLIB_SWQE_TYPE_SEND: 1770 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) { 1771 struct sq_send_raweth_qp1_hdr *sqe = base_hdr; 1772 struct sq_raw_ext_hdr *ext_sqe = ext_hdr; 1773 /* Assemble info for Raw Ethertype QPs */ 1774 1775 sqe->wqe_type = wqe->type; 1776 sqe->flags = wqe->flags; 1777 sqe->wqe_size = wqe_sz; 1778 sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action); 1779 sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags); 1780 sqe->length = cpu_to_le32(data_len); 1781 ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta & 1782 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) << 1783 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT); 1784 1785 break; 1786 } 1787 fallthrough; 1788 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM: 1789 case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV: 1790 { 1791 struct sq_ud_ext_hdr *ext_sqe = ext_hdr; 1792 struct sq_send_hdr *sqe = base_hdr; 1793 1794 sqe->wqe_type = wqe->type; 1795 sqe->flags = wqe->flags; 1796 sqe->wqe_size = wqe_sz; 1797 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key); 1798 if (qp->type == CMDQ_CREATE_QP_TYPE_UD || 1799 qp->type == CMDQ_CREATE_QP_TYPE_GSI) { 1800 sqe->q_key = cpu_to_le32(wqe->send.q_key); 1801 sqe->length = cpu_to_le32(data_len); 1802 sq->psn = (sq->psn + 1) & BTH_PSN_MASK; 1803 ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp & 1804 SQ_SEND_DST_QP_MASK); 1805 ext_sqe->avid = cpu_to_le32(wqe->send.avid & 1806 SQ_SEND_AVID_MASK); 1807 } else { 1808 sqe->length = cpu_to_le32(data_len); 1809 if (qp->mtu) 1810 pkt_num = (data_len + qp->mtu - 1) / qp->mtu; 1811 if (!pkt_num) 1812 pkt_num = 1; 1813 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; 1814 } 1815 break; 1816 } 1817 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE: 1818 case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM: 1819 case BNXT_QPLIB_SWQE_TYPE_RDMA_READ: 1820 { 1821 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr; 1822 struct sq_rdma_hdr *sqe = base_hdr; 1823 1824 sqe->wqe_type = wqe->type; 1825 sqe->flags = wqe->flags; 1826 sqe->wqe_size = wqe_sz; 1827 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key); 1828 sqe->length = cpu_to_le32((u32)data_len); 1829 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va); 1830 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key); 1831 if (qp->mtu) 1832 pkt_num = (data_len + qp->mtu - 1) / qp->mtu; 1833 if (!pkt_num) 1834 pkt_num = 1; 1835 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; 1836 break; 1837 } 1838 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP: 1839 case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD: 1840 { 1841 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr; 1842 struct sq_atomic_hdr *sqe = base_hdr; 1843 1844 sqe->wqe_type = wqe->type; 1845 sqe->flags = wqe->flags; 1846 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key); 1847 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va); 1848 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data); 1849 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data); 1850 if (qp->mtu) 1851 pkt_num = (data_len + qp->mtu - 1) / qp->mtu; 1852 if (!pkt_num) 1853 pkt_num = 1; 1854 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK; 1855 break; 1856 } 1857 case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV: 1858 { 1859 struct sq_localinvalidate *sqe = base_hdr; 1860 1861 sqe->wqe_type = wqe->type; 1862 sqe->flags = wqe->flags; 1863 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key); 1864 1865 break; 1866 } 1867 case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR: 1868 { 1869 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr; 1870 struct sq_fr_pmr_hdr *sqe = base_hdr; 1871 1872 sqe->wqe_type = wqe->type; 1873 sqe->flags = wqe->flags; 1874 sqe->access_cntl = wqe->frmr.access_cntl | 1875 SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE; 1876 sqe->zero_based_page_size_log = 1877 (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) << 1878 SQ_FR_PMR_PAGE_SIZE_LOG_SFT | 1879 (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0); 1880 sqe->l_key = cpu_to_le32(wqe->frmr.l_key); 1881 temp32 = cpu_to_le32(wqe->frmr.length); 1882 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length)); 1883 sqe->numlevels_pbl_page_size_log = 1884 ((wqe->frmr.pbl_pg_sz_log << 1885 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) & 1886 SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) | 1887 ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) & 1888 SQ_FR_PMR_NUMLEVELS_MASK); 1889 1890 for (i = 0; i < wqe->frmr.page_list_len; i++) 1891 wqe->frmr.pbl_ptr[i] = cpu_to_le64( 1892 wqe->frmr.page_list[i] | 1893 PTU_PTE_VALID); 1894 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr); 1895 ext_sqe->va = cpu_to_le64(wqe->frmr.va); 1896 1897 break; 1898 } 1899 case BNXT_QPLIB_SWQE_TYPE_BIND_MW: 1900 { 1901 struct sq_bind_ext_hdr *ext_sqe = ext_hdr; 1902 struct sq_bind_hdr *sqe = base_hdr; 1903 1904 sqe->wqe_type = wqe->type; 1905 sqe->flags = wqe->flags; 1906 sqe->access_cntl = wqe->bind.access_cntl; 1907 sqe->mw_type_zero_based = wqe->bind.mw_type | 1908 (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0); 1909 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key); 1910 sqe->l_key = cpu_to_le32(wqe->bind.r_key); 1911 ext_sqe->va = cpu_to_le64(wqe->bind.va); 1912 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length); 1913 break; 1914 } 1915 default: 1916 /* Bad wqe, return error */ 1917 rc = -EINVAL; 1918 goto done; 1919 } 1920 swq->next_psn = sq->psn & BTH_PSN_MASK; 1921 bnxt_qplib_fill_psn_search(qp, wqe, swq); 1922 queue_err: 1923 bnxt_qplib_swq_mod_start(sq, wqe_idx); 1924 bnxt_qplib_hwq_incr_prod(hwq, swq->slots); 1925 qp->wqe_cnt++; 1926 done: 1927 if (sch_handler) { 1928 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC); 1929 if (nq_work) { 1930 nq_work->cq = qp->scq; 1931 nq_work->nq = qp->scq->nq; 1932 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task); 1933 queue_work(qp->scq->nq->cqn_wq, &nq_work->work); 1934 } else { 1935 dev_err(&hwq->pdev->dev, 1936 "FP: Failed to allocate SQ nq_work!\n"); 1937 rc = -ENOMEM; 1938 } 1939 } 1940 return rc; 1941 } 1942 1943 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp) 1944 { 1945 struct bnxt_qplib_q *rq = &qp->rq; 1946 1947 bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ); 1948 } 1949 1950 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp, 1951 struct bnxt_qplib_swqe *wqe) 1952 { 1953 struct bnxt_qplib_nq_work *nq_work = NULL; 1954 struct bnxt_qplib_q *rq = &qp->rq; 1955 struct rq_wqe_hdr *base_hdr; 1956 struct rq_ext_hdr *ext_hdr; 1957 struct bnxt_qplib_hwq *hwq; 1958 struct bnxt_qplib_swq *swq; 1959 bool sch_handler = false; 1960 u16 wqe_sz, idx; 1961 u32 wqe_idx; 1962 int rc = 0; 1963 1964 hwq = &rq->hwq; 1965 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) { 1966 dev_err(&hwq->pdev->dev, 1967 "QPLIB: FP: QP (0x%x) is in the 0x%x state", 1968 qp->id, qp->state); 1969 rc = -EINVAL; 1970 goto done; 1971 } 1972 1973 if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) { 1974 dev_err(&hwq->pdev->dev, 1975 "FP: QP (0x%x) RQ is full!\n", qp->id); 1976 rc = -EINVAL; 1977 goto done; 1978 } 1979 1980 swq = bnxt_qplib_get_swqe(rq, &wqe_idx); 1981 swq->wr_id = wqe->wr_id; 1982 swq->slots = rq->dbinfo.max_slot; 1983 1984 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { 1985 sch_handler = true; 1986 dev_dbg(&hwq->pdev->dev, 1987 "%s: Error QP. Scheduling for poll_cq\n", __func__); 1988 goto queue_err; 1989 } 1990 1991 idx = 0; 1992 base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); 1993 ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++); 1994 memset(base_hdr, 0, sizeof(struct sq_sge)); 1995 memset(ext_hdr, 0, sizeof(struct sq_sge)); 1996 wqe_sz = (sizeof(struct rq_wqe_hdr) + 1997 wqe->num_sge * sizeof(struct sq_sge)) >> 4; 1998 bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx); 1999 if (!wqe->num_sge) { 2000 struct sq_sge *sge; 2001 2002 sge = bnxt_qplib_get_prod_qe(hwq, idx++); 2003 sge->size = 0; 2004 wqe_sz++; 2005 } 2006 base_hdr->wqe_type = wqe->type; 2007 base_hdr->flags = wqe->flags; 2008 base_hdr->wqe_size = wqe_sz; 2009 base_hdr->wr_id[0] = cpu_to_le32(wqe_idx); 2010 queue_err: 2011 bnxt_qplib_swq_mod_start(rq, wqe_idx); 2012 bnxt_qplib_hwq_incr_prod(hwq, swq->slots); 2013 done: 2014 if (sch_handler) { 2015 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC); 2016 if (nq_work) { 2017 nq_work->cq = qp->rcq; 2018 nq_work->nq = qp->rcq->nq; 2019 INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task); 2020 queue_work(qp->rcq->nq->cqn_wq, &nq_work->work); 2021 } else { 2022 dev_err(&hwq->pdev->dev, 2023 "FP: Failed to allocate RQ nq_work!\n"); 2024 rc = -ENOMEM; 2025 } 2026 } 2027 2028 return rc; 2029 } 2030 2031 /* CQ */ 2032 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq) 2033 { 2034 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 2035 struct bnxt_qplib_hwq_attr hwq_attr = {}; 2036 struct creq_create_cq_resp resp; 2037 struct bnxt_qplib_pbl *pbl; 2038 struct cmdq_create_cq req; 2039 u16 cmd_flags = 0; 2040 u32 pg_sz_lvl; 2041 int rc; 2042 2043 hwq_attr.res = res; 2044 hwq_attr.depth = cq->max_wqe; 2045 hwq_attr.stride = sizeof(struct cq_base); 2046 hwq_attr.type = HWQ_TYPE_QUEUE; 2047 hwq_attr.sginfo = &cq->sg_info; 2048 rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr); 2049 if (rc) 2050 goto exit; 2051 2052 RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags); 2053 2054 if (!cq->dpi) { 2055 dev_err(&rcfw->pdev->dev, 2056 "FP: CREATE_CQ failed due to NULL DPI\n"); 2057 return -EINVAL; 2058 } 2059 req.dpi = cpu_to_le32(cq->dpi->dpi); 2060 req.cq_handle = cpu_to_le64(cq->cq_handle); 2061 req.cq_size = cpu_to_le32(cq->hwq.max_elements); 2062 pbl = &cq->hwq.pbl[PBL_LVL_0]; 2063 pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) << 2064 CMDQ_CREATE_CQ_PG_SIZE_SFT); 2065 pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK); 2066 req.pg_size_lvl = cpu_to_le32(pg_sz_lvl); 2067 req.pbl = cpu_to_le64(pbl->pg_map_arr[0]); 2068 req.cq_fco_cnq_id = cpu_to_le32( 2069 (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) << 2070 CMDQ_CREATE_CQ_CNQ_ID_SFT); 2071 2072 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 2073 (void *)&resp, NULL, 0); 2074 if (rc) 2075 goto fail; 2076 2077 cq->id = le32_to_cpu(resp.xid); 2078 cq->period = BNXT_QPLIB_QUEUE_START_PERIOD; 2079 init_waitqueue_head(&cq->waitq); 2080 INIT_LIST_HEAD(&cq->sqf_head); 2081 INIT_LIST_HEAD(&cq->rqf_head); 2082 spin_lock_init(&cq->compl_lock); 2083 spin_lock_init(&cq->flush_lock); 2084 2085 cq->dbinfo.hwq = &cq->hwq; 2086 cq->dbinfo.xid = cq->id; 2087 cq->dbinfo.db = cq->dpi->dbr; 2088 cq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem; 2089 2090 bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA); 2091 2092 return 0; 2093 2094 fail: 2095 bnxt_qplib_free_hwq(res, &cq->hwq); 2096 exit: 2097 return rc; 2098 } 2099 2100 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq) 2101 { 2102 struct bnxt_qplib_rcfw *rcfw = res->rcfw; 2103 struct cmdq_destroy_cq req; 2104 struct creq_destroy_cq_resp resp; 2105 u16 total_cnq_events; 2106 u16 cmd_flags = 0; 2107 int rc; 2108 2109 RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags); 2110 2111 req.cq_cid = cpu_to_le32(cq->id); 2112 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, 2113 (void *)&resp, NULL, 0); 2114 if (rc) 2115 return rc; 2116 total_cnq_events = le16_to_cpu(resp.total_cnq_events); 2117 __wait_for_all_nqes(cq, total_cnq_events); 2118 bnxt_qplib_free_hwq(res, &cq->hwq); 2119 return 0; 2120 } 2121 2122 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp, 2123 struct bnxt_qplib_cqe **pcqe, int *budget) 2124 { 2125 struct bnxt_qplib_cqe *cqe; 2126 u32 start, last; 2127 int rc = 0; 2128 2129 /* Now complete all outstanding SQEs with FLUSHED_ERR */ 2130 start = sq->swq_start; 2131 cqe = *pcqe; 2132 while (*budget) { 2133 last = sq->swq_last; 2134 if (start == last) 2135 break; 2136 /* Skip the FENCE WQE completions */ 2137 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) { 2138 bnxt_qplib_cancel_phantom_processing(qp); 2139 goto skip_compl; 2140 } 2141 memset(cqe, 0, sizeof(*cqe)); 2142 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR; 2143 cqe->opcode = CQ_BASE_CQE_TYPE_REQ; 2144 cqe->qp_handle = (u64)(unsigned long)qp; 2145 cqe->wr_id = sq->swq[last].wr_id; 2146 cqe->src_qp = qp->id; 2147 cqe->type = sq->swq[last].type; 2148 cqe++; 2149 (*budget)--; 2150 skip_compl: 2151 bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[last].slots); 2152 sq->swq_last = sq->swq[last].next_idx; 2153 } 2154 *pcqe = cqe; 2155 if (!(*budget) && sq->swq_last != start) 2156 /* Out of budget */ 2157 rc = -EAGAIN; 2158 2159 return rc; 2160 } 2161 2162 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp, 2163 struct bnxt_qplib_cqe **pcqe, int *budget) 2164 { 2165 struct bnxt_qplib_cqe *cqe; 2166 u32 start, last; 2167 int opcode = 0; 2168 int rc = 0; 2169 2170 switch (qp->type) { 2171 case CMDQ_CREATE_QP1_TYPE_GSI: 2172 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1; 2173 break; 2174 case CMDQ_CREATE_QP_TYPE_RC: 2175 opcode = CQ_BASE_CQE_TYPE_RES_RC; 2176 break; 2177 case CMDQ_CREATE_QP_TYPE_UD: 2178 case CMDQ_CREATE_QP_TYPE_GSI: 2179 opcode = CQ_BASE_CQE_TYPE_RES_UD; 2180 break; 2181 } 2182 2183 /* Flush the rest of the RQ */ 2184 start = rq->swq_start; 2185 cqe = *pcqe; 2186 while (*budget) { 2187 last = rq->swq_last; 2188 if (last == start) 2189 break; 2190 memset(cqe, 0, sizeof(*cqe)); 2191 cqe->status = 2192 CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR; 2193 cqe->opcode = opcode; 2194 cqe->qp_handle = (unsigned long)qp; 2195 cqe->wr_id = rq->swq[last].wr_id; 2196 cqe++; 2197 (*budget)--; 2198 bnxt_qplib_hwq_incr_cons(&rq->hwq, rq->swq[last].slots); 2199 rq->swq_last = rq->swq[last].next_idx; 2200 } 2201 *pcqe = cqe; 2202 if (!*budget && rq->swq_last != start) 2203 /* Out of budget */ 2204 rc = -EAGAIN; 2205 2206 return rc; 2207 } 2208 2209 void bnxt_qplib_mark_qp_error(void *qp_handle) 2210 { 2211 struct bnxt_qplib_qp *qp = qp_handle; 2212 2213 if (!qp) 2214 return; 2215 2216 /* Must block new posting of SQ and RQ */ 2217 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; 2218 bnxt_qplib_cancel_phantom_processing(qp); 2219 } 2220 2221 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive) 2222 * CQE is track from sw_cq_cons to max_element but valid only if VALID=1 2223 */ 2224 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq, 2225 u32 cq_cons, u32 swq_last, u32 cqe_sq_cons) 2226 { 2227 u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx; 2228 struct bnxt_qplib_q *sq = &qp->sq; 2229 struct cq_req *peek_req_hwcqe; 2230 struct bnxt_qplib_qp *peek_qp; 2231 struct bnxt_qplib_q *peek_sq; 2232 struct bnxt_qplib_swq *swq; 2233 struct cq_base *peek_hwcqe; 2234 int i, rc = 0; 2235 2236 /* Normal mode */ 2237 /* Check for the psn_search marking before completing */ 2238 swq = &sq->swq[swq_last]; 2239 if (swq->psn_search && 2240 le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) { 2241 /* Unmark */ 2242 swq->psn_search->flags_next_psn = cpu_to_le32 2243 (le32_to_cpu(swq->psn_search->flags_next_psn) 2244 & ~0x80000000); 2245 dev_dbg(&cq->hwq.pdev->dev, 2246 "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n", 2247 cq_cons, qp->id, swq_last, cqe_sq_cons); 2248 sq->condition = true; 2249 sq->send_phantom = true; 2250 2251 /* TODO: Only ARM if the previous SQE is ARMALL */ 2252 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL); 2253 rc = -EAGAIN; 2254 goto out; 2255 } 2256 if (sq->condition) { 2257 /* Peek at the completions */ 2258 peek_raw_cq_cons = cq->hwq.cons; 2259 peek_sw_cq_cons = cq_cons; 2260 i = cq->hwq.max_elements; 2261 while (i--) { 2262 peek_sw_cq_cons = HWQ_CMP((peek_sw_cq_cons), &cq->hwq); 2263 peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq, 2264 peek_sw_cq_cons, NULL); 2265 /* If the next hwcqe is VALID */ 2266 if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons, 2267 cq->hwq.max_elements)) { 2268 /* 2269 * The valid test of the entry must be done first before 2270 * reading any further. 2271 */ 2272 dma_rmb(); 2273 /* If the next hwcqe is a REQ */ 2274 if ((peek_hwcqe->cqe_type_toggle & 2275 CQ_BASE_CQE_TYPE_MASK) == 2276 CQ_BASE_CQE_TYPE_REQ) { 2277 peek_req_hwcqe = (struct cq_req *) 2278 peek_hwcqe; 2279 peek_qp = (struct bnxt_qplib_qp *) 2280 ((unsigned long) 2281 le64_to_cpu 2282 (peek_req_hwcqe->qp_handle)); 2283 peek_sq = &peek_qp->sq; 2284 peek_sq_cons_idx = 2285 ((le16_to_cpu( 2286 peek_req_hwcqe->sq_cons_idx) 2287 - 1) % sq->max_wqe); 2288 /* If the hwcqe's sq's wr_id matches */ 2289 if (peek_sq == sq && 2290 sq->swq[peek_sq_cons_idx].wr_id == 2291 BNXT_QPLIB_FENCE_WRID) { 2292 /* 2293 * Unbreak only if the phantom 2294 * comes back 2295 */ 2296 dev_dbg(&cq->hwq.pdev->dev, 2297 "FP: Got Phantom CQE\n"); 2298 sq->condition = false; 2299 sq->single = true; 2300 rc = 0; 2301 goto out; 2302 } 2303 } 2304 /* Valid but not the phantom, so keep looping */ 2305 } else { 2306 /* Not valid yet, just exit and wait */ 2307 rc = -EINVAL; 2308 goto out; 2309 } 2310 peek_sw_cq_cons++; 2311 peek_raw_cq_cons++; 2312 } 2313 dev_err(&cq->hwq.pdev->dev, 2314 "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n", 2315 cq_cons, qp->id, swq_last, cqe_sq_cons); 2316 rc = -EINVAL; 2317 } 2318 out: 2319 return rc; 2320 } 2321 2322 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq, 2323 struct cq_req *hwcqe, 2324 struct bnxt_qplib_cqe **pcqe, int *budget, 2325 u32 cq_cons, struct bnxt_qplib_qp **lib_qp) 2326 { 2327 struct bnxt_qplib_swq *swq; 2328 struct bnxt_qplib_cqe *cqe; 2329 struct bnxt_qplib_qp *qp; 2330 struct bnxt_qplib_q *sq; 2331 u32 cqe_sq_cons; 2332 int rc = 0; 2333 2334 qp = (struct bnxt_qplib_qp *)((unsigned long) 2335 le64_to_cpu(hwcqe->qp_handle)); 2336 if (!qp) { 2337 dev_err(&cq->hwq.pdev->dev, 2338 "FP: Process Req qp is NULL\n"); 2339 return -EINVAL; 2340 } 2341 sq = &qp->sq; 2342 2343 cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_wqe; 2344 if (qp->sq.flushed) { 2345 dev_dbg(&cq->hwq.pdev->dev, 2346 "%s: QP in Flush QP = %p\n", __func__, qp); 2347 goto done; 2348 } 2349 /* Require to walk the sq's swq to fabricate CQEs for all previously 2350 * signaled SWQEs due to CQE aggregation from the current sq cons 2351 * to the cqe_sq_cons 2352 */ 2353 cqe = *pcqe; 2354 while (*budget) { 2355 if (sq->swq_last == cqe_sq_cons) 2356 /* Done */ 2357 break; 2358 2359 swq = &sq->swq[sq->swq_last]; 2360 memset(cqe, 0, sizeof(*cqe)); 2361 cqe->opcode = CQ_BASE_CQE_TYPE_REQ; 2362 cqe->qp_handle = (u64)(unsigned long)qp; 2363 cqe->src_qp = qp->id; 2364 cqe->wr_id = swq->wr_id; 2365 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID) 2366 goto skip; 2367 cqe->type = swq->type; 2368 2369 /* For the last CQE, check for status. For errors, regardless 2370 * of the request being signaled or not, it must complete with 2371 * the hwcqe error status 2372 */ 2373 if (swq->next_idx == cqe_sq_cons && 2374 hwcqe->status != CQ_REQ_STATUS_OK) { 2375 cqe->status = hwcqe->status; 2376 dev_err(&cq->hwq.pdev->dev, 2377 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n", 2378 sq->swq_last, cqe->wr_id, cqe->status); 2379 cqe++; 2380 (*budget)--; 2381 bnxt_qplib_mark_qp_error(qp); 2382 /* Add qp to flush list of the CQ */ 2383 bnxt_qplib_add_flush_qp(qp); 2384 } else { 2385 /* Before we complete, do WA 9060 */ 2386 if (do_wa9060(qp, cq, cq_cons, sq->swq_last, 2387 cqe_sq_cons)) { 2388 *lib_qp = qp; 2389 goto out; 2390 } 2391 if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) { 2392 cqe->status = CQ_REQ_STATUS_OK; 2393 cqe++; 2394 (*budget)--; 2395 } 2396 } 2397 skip: 2398 bnxt_qplib_hwq_incr_cons(&sq->hwq, swq->slots); 2399 sq->swq_last = swq->next_idx; 2400 if (sq->single) 2401 break; 2402 } 2403 out: 2404 *pcqe = cqe; 2405 if (sq->swq_last != cqe_sq_cons) { 2406 /* Out of budget */ 2407 rc = -EAGAIN; 2408 goto done; 2409 } 2410 /* 2411 * Back to normal completion mode only after it has completed all of 2412 * the WC for this CQE 2413 */ 2414 sq->single = false; 2415 done: 2416 return rc; 2417 } 2418 2419 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag) 2420 { 2421 spin_lock(&srq->hwq.lock); 2422 srq->swq[srq->last_idx].next_idx = (int)tag; 2423 srq->last_idx = (int)tag; 2424 srq->swq[srq->last_idx].next_idx = -1; 2425 srq->hwq.cons++; /* Support for SRQE counter */ 2426 spin_unlock(&srq->hwq.lock); 2427 } 2428 2429 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq, 2430 struct cq_res_rc *hwcqe, 2431 struct bnxt_qplib_cqe **pcqe, 2432 int *budget) 2433 { 2434 struct bnxt_qplib_srq *srq; 2435 struct bnxt_qplib_cqe *cqe; 2436 struct bnxt_qplib_qp *qp; 2437 struct bnxt_qplib_q *rq; 2438 u32 wr_id_idx; 2439 int rc = 0; 2440 2441 qp = (struct bnxt_qplib_qp *)((unsigned long) 2442 le64_to_cpu(hwcqe->qp_handle)); 2443 if (!qp) { 2444 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n"); 2445 return -EINVAL; 2446 } 2447 if (qp->rq.flushed) { 2448 dev_dbg(&cq->hwq.pdev->dev, 2449 "%s: QP in Flush QP = %p\n", __func__, qp); 2450 goto done; 2451 } 2452 2453 cqe = *pcqe; 2454 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; 2455 cqe->length = le32_to_cpu(hwcqe->length); 2456 cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key); 2457 cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle); 2458 cqe->flags = le16_to_cpu(hwcqe->flags); 2459 cqe->status = hwcqe->status; 2460 cqe->qp_handle = (u64)(unsigned long)qp; 2461 2462 wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) & 2463 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK; 2464 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) { 2465 srq = qp->srq; 2466 if (!srq) 2467 return -EINVAL; 2468 if (wr_id_idx >= srq->hwq.max_elements) { 2469 dev_err(&cq->hwq.pdev->dev, 2470 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n", 2471 wr_id_idx, srq->hwq.max_elements); 2472 return -EINVAL; 2473 } 2474 cqe->wr_id = srq->swq[wr_id_idx].wr_id; 2475 bnxt_qplib_release_srqe(srq, wr_id_idx); 2476 cqe++; 2477 (*budget)--; 2478 *pcqe = cqe; 2479 } else { 2480 struct bnxt_qplib_swq *swq; 2481 2482 rq = &qp->rq; 2483 if (wr_id_idx > (rq->max_wqe - 1)) { 2484 dev_err(&cq->hwq.pdev->dev, 2485 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n", 2486 wr_id_idx, rq->max_wqe); 2487 return -EINVAL; 2488 } 2489 if (wr_id_idx != rq->swq_last) 2490 return -EINVAL; 2491 swq = &rq->swq[rq->swq_last]; 2492 cqe->wr_id = swq->wr_id; 2493 cqe++; 2494 (*budget)--; 2495 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); 2496 rq->swq_last = swq->next_idx; 2497 *pcqe = cqe; 2498 2499 if (hwcqe->status != CQ_RES_RC_STATUS_OK) { 2500 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; 2501 /* Add qp to flush list of the CQ */ 2502 bnxt_qplib_add_flush_qp(qp); 2503 } 2504 } 2505 2506 done: 2507 return rc; 2508 } 2509 2510 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq, 2511 struct cq_res_ud *hwcqe, 2512 struct bnxt_qplib_cqe **pcqe, 2513 int *budget) 2514 { 2515 struct bnxt_qplib_srq *srq; 2516 struct bnxt_qplib_cqe *cqe; 2517 struct bnxt_qplib_qp *qp; 2518 struct bnxt_qplib_q *rq; 2519 u32 wr_id_idx; 2520 int rc = 0; 2521 2522 qp = (struct bnxt_qplib_qp *)((unsigned long) 2523 le64_to_cpu(hwcqe->qp_handle)); 2524 if (!qp) { 2525 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n"); 2526 return -EINVAL; 2527 } 2528 if (qp->rq.flushed) { 2529 dev_dbg(&cq->hwq.pdev->dev, 2530 "%s: QP in Flush QP = %p\n", __func__, qp); 2531 goto done; 2532 } 2533 cqe = *pcqe; 2534 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; 2535 cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK; 2536 cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata); 2537 cqe->invrkey = le32_to_cpu(hwcqe->imm_data); 2538 cqe->flags = le16_to_cpu(hwcqe->flags); 2539 cqe->status = hwcqe->status; 2540 cqe->qp_handle = (u64)(unsigned long)qp; 2541 /*FIXME: Endianness fix needed for smace */ 2542 memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN); 2543 wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id) 2544 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK; 2545 cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) | 2546 ((le32_to_cpu( 2547 hwcqe->src_qp_high_srq_or_rq_wr_id) & 2548 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8); 2549 2550 if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) { 2551 srq = qp->srq; 2552 if (!srq) 2553 return -EINVAL; 2554 2555 if (wr_id_idx >= srq->hwq.max_elements) { 2556 dev_err(&cq->hwq.pdev->dev, 2557 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n", 2558 wr_id_idx, srq->hwq.max_elements); 2559 return -EINVAL; 2560 } 2561 cqe->wr_id = srq->swq[wr_id_idx].wr_id; 2562 bnxt_qplib_release_srqe(srq, wr_id_idx); 2563 cqe++; 2564 (*budget)--; 2565 *pcqe = cqe; 2566 } else { 2567 struct bnxt_qplib_swq *swq; 2568 2569 rq = &qp->rq; 2570 if (wr_id_idx > (rq->max_wqe - 1)) { 2571 dev_err(&cq->hwq.pdev->dev, 2572 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n", 2573 wr_id_idx, rq->max_wqe); 2574 return -EINVAL; 2575 } 2576 2577 if (rq->swq_last != wr_id_idx) 2578 return -EINVAL; 2579 swq = &rq->swq[rq->swq_last]; 2580 cqe->wr_id = swq->wr_id; 2581 cqe++; 2582 (*budget)--; 2583 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); 2584 rq->swq_last = swq->next_idx; 2585 *pcqe = cqe; 2586 2587 if (hwcqe->status != CQ_RES_RC_STATUS_OK) { 2588 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; 2589 /* Add qp to flush list of the CQ */ 2590 bnxt_qplib_add_flush_qp(qp); 2591 } 2592 } 2593 done: 2594 return rc; 2595 } 2596 2597 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq) 2598 { 2599 struct cq_base *hw_cqe; 2600 u32 sw_cons, raw_cons; 2601 bool rc = true; 2602 2603 raw_cons = cq->hwq.cons; 2604 sw_cons = HWQ_CMP(raw_cons, &cq->hwq); 2605 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL); 2606 /* Check for Valid bit. If the CQE is valid, return false */ 2607 rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements); 2608 return rc; 2609 } 2610 2611 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq, 2612 struct cq_res_raweth_qp1 *hwcqe, 2613 struct bnxt_qplib_cqe **pcqe, 2614 int *budget) 2615 { 2616 struct bnxt_qplib_qp *qp; 2617 struct bnxt_qplib_q *rq; 2618 struct bnxt_qplib_srq *srq; 2619 struct bnxt_qplib_cqe *cqe; 2620 u32 wr_id_idx; 2621 int rc = 0; 2622 2623 qp = (struct bnxt_qplib_qp *)((unsigned long) 2624 le64_to_cpu(hwcqe->qp_handle)); 2625 if (!qp) { 2626 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n"); 2627 return -EINVAL; 2628 } 2629 if (qp->rq.flushed) { 2630 dev_dbg(&cq->hwq.pdev->dev, 2631 "%s: QP in Flush QP = %p\n", __func__, qp); 2632 goto done; 2633 } 2634 cqe = *pcqe; 2635 cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK; 2636 cqe->flags = le16_to_cpu(hwcqe->flags); 2637 cqe->qp_handle = (u64)(unsigned long)qp; 2638 2639 wr_id_idx = 2640 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id) 2641 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK; 2642 cqe->src_qp = qp->id; 2643 if (qp->id == 1 && !cqe->length) { 2644 /* Add workaround for the length misdetection */ 2645 cqe->length = 296; 2646 } else { 2647 cqe->length = le16_to_cpu(hwcqe->length); 2648 } 2649 cqe->pkey_index = qp->pkey_index; 2650 memcpy(cqe->smac, qp->smac, 6); 2651 2652 cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags); 2653 cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2); 2654 cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata); 2655 2656 if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) { 2657 srq = qp->srq; 2658 if (!srq) { 2659 dev_err(&cq->hwq.pdev->dev, 2660 "FP: SRQ used but not defined??\n"); 2661 return -EINVAL; 2662 } 2663 if (wr_id_idx >= srq->hwq.max_elements) { 2664 dev_err(&cq->hwq.pdev->dev, 2665 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n", 2666 wr_id_idx, srq->hwq.max_elements); 2667 return -EINVAL; 2668 } 2669 cqe->wr_id = srq->swq[wr_id_idx].wr_id; 2670 bnxt_qplib_release_srqe(srq, wr_id_idx); 2671 cqe++; 2672 (*budget)--; 2673 *pcqe = cqe; 2674 } else { 2675 struct bnxt_qplib_swq *swq; 2676 2677 rq = &qp->rq; 2678 if (wr_id_idx > (rq->max_wqe - 1)) { 2679 dev_err(&cq->hwq.pdev->dev, 2680 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n", 2681 wr_id_idx, rq->max_wqe); 2682 return -EINVAL; 2683 } 2684 if (rq->swq_last != wr_id_idx) 2685 return -EINVAL; 2686 swq = &rq->swq[rq->swq_last]; 2687 cqe->wr_id = swq->wr_id; 2688 cqe++; 2689 (*budget)--; 2690 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots); 2691 rq->swq_last = swq->next_idx; 2692 *pcqe = cqe; 2693 2694 if (hwcqe->status != CQ_RES_RC_STATUS_OK) { 2695 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; 2696 /* Add qp to flush list of the CQ */ 2697 bnxt_qplib_add_flush_qp(qp); 2698 } 2699 } 2700 2701 done: 2702 return rc; 2703 } 2704 2705 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq, 2706 struct cq_terminal *hwcqe, 2707 struct bnxt_qplib_cqe **pcqe, 2708 int *budget) 2709 { 2710 struct bnxt_qplib_qp *qp; 2711 struct bnxt_qplib_q *sq, *rq; 2712 struct bnxt_qplib_cqe *cqe; 2713 u32 swq_last = 0, cqe_cons; 2714 int rc = 0; 2715 2716 /* Check the Status */ 2717 if (hwcqe->status != CQ_TERMINAL_STATUS_OK) 2718 dev_warn(&cq->hwq.pdev->dev, 2719 "FP: CQ Process Terminal Error status = 0x%x\n", 2720 hwcqe->status); 2721 2722 qp = (struct bnxt_qplib_qp *)((unsigned long) 2723 le64_to_cpu(hwcqe->qp_handle)); 2724 if (!qp) { 2725 dev_err(&cq->hwq.pdev->dev, 2726 "FP: CQ Process terminal qp is NULL\n"); 2727 return -EINVAL; 2728 } 2729 2730 /* Must block new posting of SQ and RQ */ 2731 qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR; 2732 2733 sq = &qp->sq; 2734 rq = &qp->rq; 2735 2736 cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx); 2737 if (cqe_cons == 0xFFFF) 2738 goto do_rq; 2739 cqe_cons %= sq->max_wqe; 2740 2741 if (qp->sq.flushed) { 2742 dev_dbg(&cq->hwq.pdev->dev, 2743 "%s: QP in Flush QP = %p\n", __func__, qp); 2744 goto sq_done; 2745 } 2746 2747 /* Terminal CQE can also include aggregated successful CQEs prior. 2748 * So we must complete all CQEs from the current sq's cons to the 2749 * cq_cons with status OK 2750 */ 2751 cqe = *pcqe; 2752 while (*budget) { 2753 swq_last = sq->swq_last; 2754 if (swq_last == cqe_cons) 2755 break; 2756 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) { 2757 memset(cqe, 0, sizeof(*cqe)); 2758 cqe->status = CQ_REQ_STATUS_OK; 2759 cqe->opcode = CQ_BASE_CQE_TYPE_REQ; 2760 cqe->qp_handle = (u64)(unsigned long)qp; 2761 cqe->src_qp = qp->id; 2762 cqe->wr_id = sq->swq[swq_last].wr_id; 2763 cqe->type = sq->swq[swq_last].type; 2764 cqe++; 2765 (*budget)--; 2766 } 2767 bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[swq_last].slots); 2768 sq->swq_last = sq->swq[swq_last].next_idx; 2769 } 2770 *pcqe = cqe; 2771 if (!(*budget) && swq_last != cqe_cons) { 2772 /* Out of budget */ 2773 rc = -EAGAIN; 2774 goto sq_done; 2775 } 2776 sq_done: 2777 if (rc) 2778 return rc; 2779 do_rq: 2780 cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx); 2781 if (cqe_cons == 0xFFFF) { 2782 goto done; 2783 } else if (cqe_cons > rq->max_wqe - 1) { 2784 dev_err(&cq->hwq.pdev->dev, 2785 "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n", 2786 cqe_cons, rq->max_wqe); 2787 goto done; 2788 } 2789 2790 if (qp->rq.flushed) { 2791 dev_dbg(&cq->hwq.pdev->dev, 2792 "%s: QP in Flush QP = %p\n", __func__, qp); 2793 rc = 0; 2794 goto done; 2795 } 2796 2797 /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR 2798 * from the current rq->cons to the rq->prod regardless what the 2799 * rq->cons the terminal CQE indicates 2800 */ 2801 2802 /* Add qp to flush list of the CQ */ 2803 bnxt_qplib_add_flush_qp(qp); 2804 done: 2805 return rc; 2806 } 2807 2808 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq, 2809 struct cq_cutoff *hwcqe) 2810 { 2811 /* Check the Status */ 2812 if (hwcqe->status != CQ_CUTOFF_STATUS_OK) { 2813 dev_err(&cq->hwq.pdev->dev, 2814 "FP: CQ Process Cutoff Error status = 0x%x\n", 2815 hwcqe->status); 2816 return -EINVAL; 2817 } 2818 clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags); 2819 wake_up_interruptible(&cq->waitq); 2820 2821 return 0; 2822 } 2823 2824 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq, 2825 struct bnxt_qplib_cqe *cqe, 2826 int num_cqes) 2827 { 2828 struct bnxt_qplib_qp *qp = NULL; 2829 u32 budget = num_cqes; 2830 unsigned long flags; 2831 2832 spin_lock_irqsave(&cq->flush_lock, flags); 2833 list_for_each_entry(qp, &cq->sqf_head, sq_flush) { 2834 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp); 2835 __flush_sq(&qp->sq, qp, &cqe, &budget); 2836 } 2837 2838 list_for_each_entry(qp, &cq->rqf_head, rq_flush) { 2839 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp); 2840 __flush_rq(&qp->rq, qp, &cqe, &budget); 2841 } 2842 spin_unlock_irqrestore(&cq->flush_lock, flags); 2843 2844 return num_cqes - budget; 2845 } 2846 2847 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe, 2848 int num_cqes, struct bnxt_qplib_qp **lib_qp) 2849 { 2850 struct cq_base *hw_cqe; 2851 u32 sw_cons, raw_cons; 2852 int budget, rc = 0; 2853 2854 raw_cons = cq->hwq.cons; 2855 budget = num_cqes; 2856 2857 while (budget) { 2858 sw_cons = HWQ_CMP(raw_cons, &cq->hwq); 2859 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL); 2860 2861 /* Check for Valid bit */ 2862 if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements)) 2863 break; 2864 2865 /* 2866 * The valid test of the entry must be done first before 2867 * reading any further. 2868 */ 2869 dma_rmb(); 2870 /* From the device's respective CQE format to qplib_wc*/ 2871 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) { 2872 case CQ_BASE_CQE_TYPE_REQ: 2873 rc = bnxt_qplib_cq_process_req(cq, 2874 (struct cq_req *)hw_cqe, 2875 &cqe, &budget, 2876 sw_cons, lib_qp); 2877 break; 2878 case CQ_BASE_CQE_TYPE_RES_RC: 2879 rc = bnxt_qplib_cq_process_res_rc(cq, 2880 (struct cq_res_rc *) 2881 hw_cqe, &cqe, 2882 &budget); 2883 break; 2884 case CQ_BASE_CQE_TYPE_RES_UD: 2885 rc = bnxt_qplib_cq_process_res_ud 2886 (cq, (struct cq_res_ud *)hw_cqe, &cqe, 2887 &budget); 2888 break; 2889 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: 2890 rc = bnxt_qplib_cq_process_res_raweth_qp1 2891 (cq, (struct cq_res_raweth_qp1 *) 2892 hw_cqe, &cqe, &budget); 2893 break; 2894 case CQ_BASE_CQE_TYPE_TERMINAL: 2895 rc = bnxt_qplib_cq_process_terminal 2896 (cq, (struct cq_terminal *)hw_cqe, 2897 &cqe, &budget); 2898 break; 2899 case CQ_BASE_CQE_TYPE_CUT_OFF: 2900 bnxt_qplib_cq_process_cutoff 2901 (cq, (struct cq_cutoff *)hw_cqe); 2902 /* Done processing this CQ */ 2903 goto exit; 2904 default: 2905 dev_err(&cq->hwq.pdev->dev, 2906 "process_cq unknown type 0x%lx\n", 2907 hw_cqe->cqe_type_toggle & 2908 CQ_BASE_CQE_TYPE_MASK); 2909 rc = -EINVAL; 2910 break; 2911 } 2912 if (rc < 0) { 2913 if (rc == -EAGAIN) 2914 break; 2915 /* Error while processing the CQE, just skip to the 2916 * next one 2917 */ 2918 dev_err(&cq->hwq.pdev->dev, 2919 "process_cqe error rc = 0x%x\n", rc); 2920 } 2921 raw_cons++; 2922 } 2923 if (cq->hwq.cons != raw_cons) { 2924 cq->hwq.cons = raw_cons; 2925 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ); 2926 } 2927 exit: 2928 return num_cqes - budget; 2929 } 2930 2931 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type) 2932 { 2933 if (arm_type) 2934 bnxt_qplib_ring_db(&cq->dbinfo, arm_type); 2935 /* Using cq->arm_state variable to track whether to issue cq handler */ 2936 atomic_set(&cq->arm_state, 1); 2937 } 2938 2939 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp) 2940 { 2941 flush_workqueue(qp->scq->nq->cqn_wq); 2942 if (qp->scq != qp->rcq) 2943 flush_workqueue(qp->rcq->nq->cqn_wq); 2944 } 2945