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