1 /* QLogic qedr NIC Driver 2 * Copyright (c) 2015-2016 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #include <linux/dma-mapping.h> 33 #include <linux/crc32.h> 34 #include <net/ip.h> 35 #include <net/ipv6.h> 36 #include <net/udp.h> 37 #include <linux/iommu.h> 38 39 #include <rdma/ib_verbs.h> 40 #include <rdma/ib_user_verbs.h> 41 #include <rdma/iw_cm.h> 42 #include <rdma/ib_umem.h> 43 #include <rdma/ib_addr.h> 44 #include <rdma/ib_cache.h> 45 #include <rdma/uverbs_ioctl.h> 46 47 #include <linux/qed/common_hsi.h> 48 #include "qedr_hsi_rdma.h" 49 #include <linux/qed/qed_if.h> 50 #include "qedr.h" 51 #include "verbs.h" 52 #include <rdma/qedr-abi.h> 53 #include "qedr_roce_cm.h" 54 #include "qedr_iw_cm.h" 55 56 #define QEDR_SRQ_WQE_ELEM_SIZE sizeof(union rdma_srq_elm) 57 #define RDMA_MAX_SGE_PER_SRQ (4) 58 #define RDMA_MAX_SRQ_WQE_SIZE (RDMA_MAX_SGE_PER_SRQ + 1) 59 60 #define DB_ADDR_SHIFT(addr) ((addr) << DB_PWM_ADDR_OFFSET_SHIFT) 61 62 enum { 63 QEDR_USER_MMAP_IO_WC = 0, 64 QEDR_USER_MMAP_PHYS_PAGE, 65 }; 66 67 static inline int qedr_ib_copy_to_udata(struct ib_udata *udata, void *src, 68 size_t len) 69 { 70 size_t min_len = min_t(size_t, len, udata->outlen); 71 72 return ib_copy_to_udata(udata, src, min_len); 73 } 74 75 int qedr_query_pkey(struct ib_device *ibdev, u32 port, u16 index, u16 *pkey) 76 { 77 if (index >= QEDR_ROCE_PKEY_TABLE_LEN) 78 return -EINVAL; 79 80 *pkey = QEDR_ROCE_PKEY_DEFAULT; 81 return 0; 82 } 83 84 int qedr_iw_query_gid(struct ib_device *ibdev, u32 port, 85 int index, union ib_gid *sgid) 86 { 87 struct qedr_dev *dev = get_qedr_dev(ibdev); 88 89 memset(sgid->raw, 0, sizeof(sgid->raw)); 90 ether_addr_copy(sgid->raw, dev->ndev->dev_addr); 91 92 DP_DEBUG(dev, QEDR_MSG_INIT, "QUERY sgid[%d]=%llx:%llx\n", index, 93 sgid->global.interface_id, sgid->global.subnet_prefix); 94 95 return 0; 96 } 97 98 int qedr_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr) 99 { 100 struct qedr_dev *dev = get_qedr_dev(ibsrq->device); 101 struct qedr_device_attr *qattr = &dev->attr; 102 struct qedr_srq *srq = get_qedr_srq(ibsrq); 103 104 srq_attr->srq_limit = srq->srq_limit; 105 srq_attr->max_wr = qattr->max_srq_wr; 106 srq_attr->max_sge = qattr->max_sge; 107 108 return 0; 109 } 110 111 int qedr_query_device(struct ib_device *ibdev, 112 struct ib_device_attr *attr, struct ib_udata *udata) 113 { 114 struct qedr_dev *dev = get_qedr_dev(ibdev); 115 struct qedr_device_attr *qattr = &dev->attr; 116 117 if (!dev->rdma_ctx) { 118 DP_ERR(dev, 119 "qedr_query_device called with invalid params rdma_ctx=%p\n", 120 dev->rdma_ctx); 121 return -EINVAL; 122 } 123 124 memset(attr, 0, sizeof(*attr)); 125 126 attr->fw_ver = qattr->fw_ver; 127 attr->sys_image_guid = qattr->sys_image_guid; 128 attr->max_mr_size = qattr->max_mr_size; 129 attr->page_size_cap = qattr->page_size_caps; 130 attr->vendor_id = qattr->vendor_id; 131 attr->vendor_part_id = qattr->vendor_part_id; 132 attr->hw_ver = qattr->hw_ver; 133 attr->max_qp = qattr->max_qp; 134 attr->max_qp_wr = max_t(u32, qattr->max_sqe, qattr->max_rqe); 135 attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD | 136 IB_DEVICE_RC_RNR_NAK_GEN | 137 IB_DEVICE_MEM_MGT_EXTENSIONS; 138 attr->kernel_cap_flags = IBK_LOCAL_DMA_LKEY; 139 140 if (!rdma_protocol_iwarp(&dev->ibdev, 1)) 141 attr->device_cap_flags |= IB_DEVICE_XRC; 142 attr->max_send_sge = qattr->max_sge; 143 attr->max_recv_sge = qattr->max_sge; 144 attr->max_sge_rd = qattr->max_sge; 145 attr->max_cq = qattr->max_cq; 146 attr->max_cqe = qattr->max_cqe; 147 attr->max_mr = qattr->max_mr; 148 attr->max_mw = qattr->max_mw; 149 attr->max_pd = qattr->max_pd; 150 attr->atomic_cap = dev->atomic_cap; 151 attr->max_qp_init_rd_atom = 152 1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1); 153 attr->max_qp_rd_atom = 154 min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1), 155 attr->max_qp_init_rd_atom); 156 157 attr->max_srq = qattr->max_srq; 158 attr->max_srq_sge = qattr->max_srq_sge; 159 attr->max_srq_wr = qattr->max_srq_wr; 160 161 attr->local_ca_ack_delay = qattr->dev_ack_delay; 162 attr->max_fast_reg_page_list_len = qattr->max_mr / 8; 163 attr->max_pkeys = qattr->max_pkey; 164 attr->max_ah = qattr->max_ah; 165 166 return 0; 167 } 168 169 static inline void get_link_speed_and_width(int speed, u16 *ib_speed, 170 u8 *ib_width) 171 { 172 switch (speed) { 173 case 1000: 174 *ib_speed = IB_SPEED_SDR; 175 *ib_width = IB_WIDTH_1X; 176 break; 177 case 10000: 178 *ib_speed = IB_SPEED_QDR; 179 *ib_width = IB_WIDTH_1X; 180 break; 181 182 case 20000: 183 *ib_speed = IB_SPEED_DDR; 184 *ib_width = IB_WIDTH_4X; 185 break; 186 187 case 25000: 188 *ib_speed = IB_SPEED_EDR; 189 *ib_width = IB_WIDTH_1X; 190 break; 191 192 case 40000: 193 *ib_speed = IB_SPEED_QDR; 194 *ib_width = IB_WIDTH_4X; 195 break; 196 197 case 50000: 198 *ib_speed = IB_SPEED_HDR; 199 *ib_width = IB_WIDTH_1X; 200 break; 201 202 case 100000: 203 *ib_speed = IB_SPEED_EDR; 204 *ib_width = IB_WIDTH_4X; 205 break; 206 207 default: 208 /* Unsupported */ 209 *ib_speed = IB_SPEED_SDR; 210 *ib_width = IB_WIDTH_1X; 211 } 212 } 213 214 int qedr_query_port(struct ib_device *ibdev, u32 port, 215 struct ib_port_attr *attr) 216 { 217 struct qedr_dev *dev; 218 struct qed_rdma_port *rdma_port; 219 220 dev = get_qedr_dev(ibdev); 221 222 if (!dev->rdma_ctx) { 223 DP_ERR(dev, "rdma_ctx is NULL\n"); 224 return -EINVAL; 225 } 226 227 rdma_port = dev->ops->rdma_query_port(dev->rdma_ctx); 228 229 /* *attr being zeroed by the caller, avoid zeroing it here */ 230 if (rdma_port->port_state == QED_RDMA_PORT_UP) { 231 attr->state = IB_PORT_ACTIVE; 232 attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 233 } else { 234 attr->state = IB_PORT_DOWN; 235 attr->phys_state = IB_PORT_PHYS_STATE_DISABLED; 236 } 237 attr->max_mtu = IB_MTU_4096; 238 attr->lid = 0; 239 attr->lmc = 0; 240 attr->sm_lid = 0; 241 attr->sm_sl = 0; 242 attr->ip_gids = true; 243 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 244 attr->active_mtu = iboe_get_mtu(dev->iwarp_max_mtu); 245 attr->gid_tbl_len = 1; 246 } else { 247 attr->active_mtu = iboe_get_mtu(dev->ndev->mtu); 248 attr->gid_tbl_len = QEDR_MAX_SGID; 249 attr->pkey_tbl_len = QEDR_ROCE_PKEY_TABLE_LEN; 250 } 251 attr->bad_pkey_cntr = rdma_port->pkey_bad_counter; 252 attr->qkey_viol_cntr = 0; 253 get_link_speed_and_width(rdma_port->link_speed, 254 &attr->active_speed, &attr->active_width); 255 attr->max_msg_sz = rdma_port->max_msg_size; 256 attr->max_vl_num = 4; 257 258 return 0; 259 } 260 261 int qedr_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) 262 { 263 struct ib_device *ibdev = uctx->device; 264 int rc; 265 struct qedr_ucontext *ctx = get_qedr_ucontext(uctx); 266 struct qedr_alloc_ucontext_resp uresp = {}; 267 struct qedr_alloc_ucontext_req ureq = {}; 268 struct qedr_dev *dev = get_qedr_dev(ibdev); 269 struct qed_rdma_add_user_out_params oparams; 270 struct qedr_user_mmap_entry *entry; 271 272 if (!udata) 273 return -EFAULT; 274 275 if (udata->inlen) { 276 rc = ib_copy_from_udata(&ureq, udata, 277 min(sizeof(ureq), udata->inlen)); 278 if (rc) { 279 DP_ERR(dev, "Problem copying data from user space\n"); 280 return -EFAULT; 281 } 282 ctx->edpm_mode = !!(ureq.context_flags & 283 QEDR_ALLOC_UCTX_EDPM_MODE); 284 ctx->db_rec = !!(ureq.context_flags & QEDR_ALLOC_UCTX_DB_REC); 285 } 286 287 rc = dev->ops->rdma_add_user(dev->rdma_ctx, &oparams); 288 if (rc) { 289 DP_ERR(dev, 290 "failed to allocate a DPI for a new RoCE application, rc=%d. To overcome this consider to increase the number of DPIs, increase the doorbell BAR size or just close unnecessary RoCE applications. In order to increase the number of DPIs consult the qedr readme\n", 291 rc); 292 return rc; 293 } 294 295 ctx->dpi = oparams.dpi; 296 ctx->dpi_addr = oparams.dpi_addr; 297 ctx->dpi_phys_addr = oparams.dpi_phys_addr; 298 ctx->dpi_size = oparams.dpi_size; 299 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 300 if (!entry) { 301 rc = -ENOMEM; 302 goto err; 303 } 304 305 entry->io_address = ctx->dpi_phys_addr; 306 entry->length = ctx->dpi_size; 307 entry->mmap_flag = QEDR_USER_MMAP_IO_WC; 308 entry->dpi = ctx->dpi; 309 entry->dev = dev; 310 rc = rdma_user_mmap_entry_insert(uctx, &entry->rdma_entry, 311 ctx->dpi_size); 312 if (rc) { 313 kfree(entry); 314 goto err; 315 } 316 ctx->db_mmap_entry = &entry->rdma_entry; 317 318 if (!dev->user_dpm_enabled) 319 uresp.dpm_flags = 0; 320 else if (rdma_protocol_iwarp(&dev->ibdev, 1)) 321 uresp.dpm_flags = QEDR_DPM_TYPE_IWARP_LEGACY; 322 else 323 uresp.dpm_flags = QEDR_DPM_TYPE_ROCE_ENHANCED | 324 QEDR_DPM_TYPE_ROCE_LEGACY | 325 QEDR_DPM_TYPE_ROCE_EDPM_MODE; 326 327 if (ureq.context_flags & QEDR_SUPPORT_DPM_SIZES) { 328 uresp.dpm_flags |= QEDR_DPM_SIZES_SET; 329 uresp.ldpm_limit_size = QEDR_LDPM_MAX_SIZE; 330 uresp.edpm_trans_size = QEDR_EDPM_TRANS_SIZE; 331 uresp.edpm_limit_size = QEDR_EDPM_MAX_SIZE; 332 } 333 334 uresp.wids_enabled = 1; 335 uresp.wid_count = oparams.wid_count; 336 uresp.db_pa = rdma_user_mmap_get_offset(ctx->db_mmap_entry); 337 uresp.db_size = ctx->dpi_size; 338 uresp.max_send_wr = dev->attr.max_sqe; 339 uresp.max_recv_wr = dev->attr.max_rqe; 340 uresp.max_srq_wr = dev->attr.max_srq_wr; 341 uresp.sges_per_send_wr = QEDR_MAX_SQE_ELEMENTS_PER_SQE; 342 uresp.sges_per_recv_wr = QEDR_MAX_RQE_ELEMENTS_PER_RQE; 343 uresp.sges_per_srq_wr = dev->attr.max_srq_sge; 344 uresp.max_cqes = QEDR_MAX_CQES; 345 346 rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp)); 347 if (rc) 348 goto err; 349 350 ctx->dev = dev; 351 352 DP_DEBUG(dev, QEDR_MSG_INIT, "Allocating user context %p\n", 353 &ctx->ibucontext); 354 return 0; 355 356 err: 357 if (!ctx->db_mmap_entry) 358 dev->ops->rdma_remove_user(dev->rdma_ctx, ctx->dpi); 359 else 360 rdma_user_mmap_entry_remove(ctx->db_mmap_entry); 361 362 return rc; 363 } 364 365 void qedr_dealloc_ucontext(struct ib_ucontext *ibctx) 366 { 367 struct qedr_ucontext *uctx = get_qedr_ucontext(ibctx); 368 369 DP_DEBUG(uctx->dev, QEDR_MSG_INIT, "Deallocating user context %p\n", 370 uctx); 371 372 rdma_user_mmap_entry_remove(uctx->db_mmap_entry); 373 } 374 375 void qedr_mmap_free(struct rdma_user_mmap_entry *rdma_entry) 376 { 377 struct qedr_user_mmap_entry *entry = get_qedr_mmap_entry(rdma_entry); 378 struct qedr_dev *dev = entry->dev; 379 380 if (entry->mmap_flag == QEDR_USER_MMAP_PHYS_PAGE) 381 free_page((unsigned long)entry->address); 382 else if (entry->mmap_flag == QEDR_USER_MMAP_IO_WC) 383 dev->ops->rdma_remove_user(dev->rdma_ctx, entry->dpi); 384 385 kfree(entry); 386 } 387 388 int qedr_mmap(struct ib_ucontext *ucontext, struct vm_area_struct *vma) 389 { 390 struct ib_device *dev = ucontext->device; 391 size_t length = vma->vm_end - vma->vm_start; 392 struct rdma_user_mmap_entry *rdma_entry; 393 struct qedr_user_mmap_entry *entry; 394 int rc = 0; 395 u64 pfn; 396 397 ibdev_dbg(dev, 398 "start %#lx, end %#lx, length = %#zx, pgoff = %#lx\n", 399 vma->vm_start, vma->vm_end, length, vma->vm_pgoff); 400 401 rdma_entry = rdma_user_mmap_entry_get(ucontext, vma); 402 if (!rdma_entry) { 403 ibdev_dbg(dev, "pgoff[%#lx] does not have valid entry\n", 404 vma->vm_pgoff); 405 return -EINVAL; 406 } 407 entry = get_qedr_mmap_entry(rdma_entry); 408 ibdev_dbg(dev, 409 "Mapping address[%#llx], length[%#zx], mmap_flag[%d]\n", 410 entry->io_address, length, entry->mmap_flag); 411 412 switch (entry->mmap_flag) { 413 case QEDR_USER_MMAP_IO_WC: 414 pfn = entry->io_address >> PAGE_SHIFT; 415 rc = rdma_user_mmap_io(ucontext, vma, pfn, length, 416 pgprot_writecombine(vma->vm_page_prot), 417 rdma_entry); 418 break; 419 case QEDR_USER_MMAP_PHYS_PAGE: 420 rc = vm_insert_page(vma, vma->vm_start, 421 virt_to_page(entry->address)); 422 break; 423 default: 424 rc = -EINVAL; 425 } 426 427 if (rc) 428 ibdev_dbg(dev, 429 "Couldn't mmap address[%#llx] length[%#zx] mmap_flag[%d] err[%d]\n", 430 entry->io_address, length, entry->mmap_flag, rc); 431 432 rdma_user_mmap_entry_put(rdma_entry); 433 return rc; 434 } 435 436 int qedr_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 437 { 438 struct ib_device *ibdev = ibpd->device; 439 struct qedr_dev *dev = get_qedr_dev(ibdev); 440 struct qedr_pd *pd = get_qedr_pd(ibpd); 441 u16 pd_id; 442 int rc; 443 444 DP_DEBUG(dev, QEDR_MSG_INIT, "Function called from: %s\n", 445 udata ? "User Lib" : "Kernel"); 446 447 if (!dev->rdma_ctx) { 448 DP_ERR(dev, "invalid RDMA context\n"); 449 return -EINVAL; 450 } 451 452 rc = dev->ops->rdma_alloc_pd(dev->rdma_ctx, &pd_id); 453 if (rc) 454 return rc; 455 456 pd->pd_id = pd_id; 457 458 if (udata) { 459 struct qedr_alloc_pd_uresp uresp = { 460 .pd_id = pd_id, 461 }; 462 struct qedr_ucontext *context = rdma_udata_to_drv_context( 463 udata, struct qedr_ucontext, ibucontext); 464 465 rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp)); 466 if (rc) { 467 DP_ERR(dev, "copy error pd_id=0x%x.\n", pd_id); 468 dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd_id); 469 return rc; 470 } 471 472 pd->uctx = context; 473 pd->uctx->pd = pd; 474 } 475 476 return 0; 477 } 478 479 int qedr_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 480 { 481 struct qedr_dev *dev = get_qedr_dev(ibpd->device); 482 struct qedr_pd *pd = get_qedr_pd(ibpd); 483 484 DP_DEBUG(dev, QEDR_MSG_INIT, "Deallocating PD %d\n", pd->pd_id); 485 dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd->pd_id); 486 return 0; 487 } 488 489 490 int qedr_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata) 491 { 492 struct qedr_dev *dev = get_qedr_dev(ibxrcd->device); 493 struct qedr_xrcd *xrcd = get_qedr_xrcd(ibxrcd); 494 495 return dev->ops->rdma_alloc_xrcd(dev->rdma_ctx, &xrcd->xrcd_id); 496 } 497 498 int qedr_dealloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata) 499 { 500 struct qedr_dev *dev = get_qedr_dev(ibxrcd->device); 501 u16 xrcd_id = get_qedr_xrcd(ibxrcd)->xrcd_id; 502 503 dev->ops->rdma_dealloc_xrcd(dev->rdma_ctx, xrcd_id); 504 return 0; 505 } 506 static void qedr_free_pbl(struct qedr_dev *dev, 507 struct qedr_pbl_info *pbl_info, struct qedr_pbl *pbl) 508 { 509 struct pci_dev *pdev = dev->pdev; 510 int i; 511 512 for (i = 0; i < pbl_info->num_pbls; i++) { 513 if (!pbl[i].va) 514 continue; 515 dma_free_coherent(&pdev->dev, pbl_info->pbl_size, 516 pbl[i].va, pbl[i].pa); 517 } 518 519 kfree(pbl); 520 } 521 522 #define MIN_FW_PBL_PAGE_SIZE (4 * 1024) 523 #define MAX_FW_PBL_PAGE_SIZE (64 * 1024) 524 525 #define NUM_PBES_ON_PAGE(_page_size) (_page_size / sizeof(u64)) 526 #define MAX_PBES_ON_PAGE NUM_PBES_ON_PAGE(MAX_FW_PBL_PAGE_SIZE) 527 #define MAX_PBES_TWO_LAYER (MAX_PBES_ON_PAGE * MAX_PBES_ON_PAGE) 528 529 static struct qedr_pbl *qedr_alloc_pbl_tbl(struct qedr_dev *dev, 530 struct qedr_pbl_info *pbl_info, 531 gfp_t flags) 532 { 533 struct pci_dev *pdev = dev->pdev; 534 struct qedr_pbl *pbl_table; 535 dma_addr_t *pbl_main_tbl; 536 dma_addr_t pa; 537 void *va; 538 int i; 539 540 pbl_table = kcalloc(pbl_info->num_pbls, sizeof(*pbl_table), flags); 541 if (!pbl_table) 542 return ERR_PTR(-ENOMEM); 543 544 for (i = 0; i < pbl_info->num_pbls; i++) { 545 va = dma_alloc_coherent(&pdev->dev, pbl_info->pbl_size, &pa, 546 flags); 547 if (!va) 548 goto err; 549 550 pbl_table[i].va = va; 551 pbl_table[i].pa = pa; 552 } 553 554 /* Two-Layer PBLs, if we have more than one pbl we need to initialize 555 * the first one with physical pointers to all of the rest 556 */ 557 pbl_main_tbl = (dma_addr_t *)pbl_table[0].va; 558 for (i = 0; i < pbl_info->num_pbls - 1; i++) 559 pbl_main_tbl[i] = pbl_table[i + 1].pa; 560 561 return pbl_table; 562 563 err: 564 for (i--; i >= 0; i--) 565 dma_free_coherent(&pdev->dev, pbl_info->pbl_size, 566 pbl_table[i].va, pbl_table[i].pa); 567 568 qedr_free_pbl(dev, pbl_info, pbl_table); 569 570 return ERR_PTR(-ENOMEM); 571 } 572 573 static int qedr_prepare_pbl_tbl(struct qedr_dev *dev, 574 struct qedr_pbl_info *pbl_info, 575 u32 num_pbes, int two_layer_capable) 576 { 577 u32 pbl_capacity; 578 u32 pbl_size; 579 u32 num_pbls; 580 581 if ((num_pbes > MAX_PBES_ON_PAGE) && two_layer_capable) { 582 if (num_pbes > MAX_PBES_TWO_LAYER) { 583 DP_ERR(dev, "prepare pbl table: too many pages %d\n", 584 num_pbes); 585 return -EINVAL; 586 } 587 588 /* calculate required pbl page size */ 589 pbl_size = MIN_FW_PBL_PAGE_SIZE; 590 pbl_capacity = NUM_PBES_ON_PAGE(pbl_size) * 591 NUM_PBES_ON_PAGE(pbl_size); 592 593 while (pbl_capacity < num_pbes) { 594 pbl_size *= 2; 595 pbl_capacity = pbl_size / sizeof(u64); 596 pbl_capacity = pbl_capacity * pbl_capacity; 597 } 598 599 num_pbls = DIV_ROUND_UP(num_pbes, NUM_PBES_ON_PAGE(pbl_size)); 600 num_pbls++; /* One for the layer0 ( points to the pbls) */ 601 pbl_info->two_layered = true; 602 } else { 603 /* One layered PBL */ 604 num_pbls = 1; 605 pbl_size = max_t(u32, MIN_FW_PBL_PAGE_SIZE, 606 roundup_pow_of_two((num_pbes * sizeof(u64)))); 607 pbl_info->two_layered = false; 608 } 609 610 pbl_info->num_pbls = num_pbls; 611 pbl_info->pbl_size = pbl_size; 612 pbl_info->num_pbes = num_pbes; 613 614 DP_DEBUG(dev, QEDR_MSG_MR, 615 "prepare pbl table: num_pbes=%d, num_pbls=%d, pbl_size=%d\n", 616 pbl_info->num_pbes, pbl_info->num_pbls, pbl_info->pbl_size); 617 618 return 0; 619 } 620 621 static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem, 622 struct qedr_pbl *pbl, 623 struct qedr_pbl_info *pbl_info, u32 pg_shift) 624 { 625 int pbe_cnt, total_num_pbes = 0; 626 struct qedr_pbl *pbl_tbl; 627 struct ib_block_iter biter; 628 struct regpair *pbe; 629 630 if (!pbl_info->num_pbes) 631 return; 632 633 /* If we have a two layered pbl, the first pbl points to the rest 634 * of the pbls and the first entry lays on the second pbl in the table 635 */ 636 if (pbl_info->two_layered) 637 pbl_tbl = &pbl[1]; 638 else 639 pbl_tbl = pbl; 640 641 pbe = (struct regpair *)pbl_tbl->va; 642 if (!pbe) { 643 DP_ERR(dev, "cannot populate PBL due to a NULL PBE\n"); 644 return; 645 } 646 647 pbe_cnt = 0; 648 649 rdma_umem_for_each_dma_block (umem, &biter, BIT(pg_shift)) { 650 u64 pg_addr = rdma_block_iter_dma_address(&biter); 651 652 pbe->lo = cpu_to_le32(pg_addr); 653 pbe->hi = cpu_to_le32(upper_32_bits(pg_addr)); 654 655 pbe_cnt++; 656 total_num_pbes++; 657 pbe++; 658 659 if (total_num_pbes == pbl_info->num_pbes) 660 return; 661 662 /* If the given pbl is full storing the pbes, move to next pbl. 663 */ 664 if (pbe_cnt == (pbl_info->pbl_size / sizeof(u64))) { 665 pbl_tbl++; 666 pbe = (struct regpair *)pbl_tbl->va; 667 pbe_cnt = 0; 668 } 669 } 670 } 671 672 static int qedr_db_recovery_add(struct qedr_dev *dev, 673 void __iomem *db_addr, 674 void *db_data, 675 enum qed_db_rec_width db_width, 676 enum qed_db_rec_space db_space) 677 { 678 if (!db_data) { 679 DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n"); 680 return 0; 681 } 682 683 return dev->ops->common->db_recovery_add(dev->cdev, db_addr, db_data, 684 db_width, db_space); 685 } 686 687 static void qedr_db_recovery_del(struct qedr_dev *dev, 688 void __iomem *db_addr, 689 void *db_data) 690 { 691 if (!db_data) { 692 DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n"); 693 return; 694 } 695 696 /* Ignore return code as there is not much we can do about it. Error 697 * log will be printed inside. 698 */ 699 dev->ops->common->db_recovery_del(dev->cdev, db_addr, db_data); 700 } 701 702 static int qedr_copy_cq_uresp(struct qedr_dev *dev, 703 struct qedr_cq *cq, struct ib_udata *udata, 704 u32 db_offset) 705 { 706 struct qedr_create_cq_uresp uresp; 707 int rc; 708 709 memset(&uresp, 0, sizeof(uresp)); 710 711 uresp.db_offset = db_offset; 712 uresp.icid = cq->icid; 713 if (cq->q.db_mmap_entry) 714 uresp.db_rec_addr = 715 rdma_user_mmap_get_offset(cq->q.db_mmap_entry); 716 717 rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp)); 718 if (rc) 719 DP_ERR(dev, "copy error cqid=0x%x.\n", cq->icid); 720 721 return rc; 722 } 723 724 static void consume_cqe(struct qedr_cq *cq) 725 { 726 if (cq->latest_cqe == cq->toggle_cqe) 727 cq->pbl_toggle ^= RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK; 728 729 cq->latest_cqe = qed_chain_consume(&cq->pbl); 730 } 731 732 static inline int qedr_align_cq_entries(int entries) 733 { 734 u64 size, aligned_size; 735 736 /* We allocate an extra entry that we don't report to the FW. */ 737 size = (entries + 1) * QEDR_CQE_SIZE; 738 aligned_size = ALIGN(size, PAGE_SIZE); 739 740 return aligned_size / QEDR_CQE_SIZE; 741 } 742 743 static int qedr_init_user_db_rec(struct ib_udata *udata, 744 struct qedr_dev *dev, struct qedr_userq *q, 745 bool requires_db_rec) 746 { 747 struct qedr_ucontext *uctx = 748 rdma_udata_to_drv_context(udata, struct qedr_ucontext, 749 ibucontext); 750 struct qedr_user_mmap_entry *entry; 751 int rc; 752 753 /* Aborting for non doorbell userqueue (SRQ) or non-supporting lib */ 754 if (requires_db_rec == 0 || !uctx->db_rec) 755 return 0; 756 757 /* Allocate a page for doorbell recovery, add to mmap */ 758 q->db_rec_data = (void *)get_zeroed_page(GFP_USER); 759 if (!q->db_rec_data) { 760 DP_ERR(dev, "get_zeroed_page failed\n"); 761 return -ENOMEM; 762 } 763 764 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 765 if (!entry) 766 goto err_free_db_data; 767 768 entry->address = q->db_rec_data; 769 entry->length = PAGE_SIZE; 770 entry->mmap_flag = QEDR_USER_MMAP_PHYS_PAGE; 771 rc = rdma_user_mmap_entry_insert(&uctx->ibucontext, 772 &entry->rdma_entry, 773 PAGE_SIZE); 774 if (rc) 775 goto err_free_entry; 776 777 q->db_mmap_entry = &entry->rdma_entry; 778 779 return 0; 780 781 err_free_entry: 782 kfree(entry); 783 784 err_free_db_data: 785 free_page((unsigned long)q->db_rec_data); 786 q->db_rec_data = NULL; 787 return -ENOMEM; 788 } 789 790 static inline int qedr_init_user_queue(struct ib_udata *udata, 791 struct qedr_dev *dev, 792 struct qedr_userq *q, u64 buf_addr, 793 size_t buf_len, bool requires_db_rec, 794 int access, 795 int alloc_and_init) 796 { 797 u32 fw_pages; 798 int rc; 799 800 q->buf_addr = buf_addr; 801 q->buf_len = buf_len; 802 q->umem = ib_umem_get(&dev->ibdev, q->buf_addr, q->buf_len, access); 803 if (IS_ERR(q->umem)) { 804 DP_ERR(dev, "create user queue: failed ib_umem_get, got %ld\n", 805 PTR_ERR(q->umem)); 806 return PTR_ERR(q->umem); 807 } 808 809 fw_pages = ib_umem_num_dma_blocks(q->umem, 1 << FW_PAGE_SHIFT); 810 rc = qedr_prepare_pbl_tbl(dev, &q->pbl_info, fw_pages, 0); 811 if (rc) 812 goto err0; 813 814 if (alloc_and_init) { 815 q->pbl_tbl = qedr_alloc_pbl_tbl(dev, &q->pbl_info, GFP_KERNEL); 816 if (IS_ERR(q->pbl_tbl)) { 817 rc = PTR_ERR(q->pbl_tbl); 818 goto err0; 819 } 820 qedr_populate_pbls(dev, q->umem, q->pbl_tbl, &q->pbl_info, 821 FW_PAGE_SHIFT); 822 } else { 823 q->pbl_tbl = kzalloc(sizeof(*q->pbl_tbl), GFP_KERNEL); 824 if (!q->pbl_tbl) { 825 rc = -ENOMEM; 826 goto err0; 827 } 828 } 829 830 /* mmap the user address used to store doorbell data for recovery */ 831 return qedr_init_user_db_rec(udata, dev, q, requires_db_rec); 832 833 err0: 834 ib_umem_release(q->umem); 835 q->umem = NULL; 836 837 return rc; 838 } 839 840 static inline void qedr_init_cq_params(struct qedr_cq *cq, 841 struct qedr_ucontext *ctx, 842 struct qedr_dev *dev, int vector, 843 int chain_entries, int page_cnt, 844 u64 pbl_ptr, 845 struct qed_rdma_create_cq_in_params 846 *params) 847 { 848 memset(params, 0, sizeof(*params)); 849 params->cq_handle_hi = upper_32_bits((uintptr_t)cq); 850 params->cq_handle_lo = lower_32_bits((uintptr_t)cq); 851 params->cnq_id = vector; 852 params->cq_size = chain_entries - 1; 853 params->dpi = (ctx) ? ctx->dpi : dev->dpi; 854 params->pbl_num_pages = page_cnt; 855 params->pbl_ptr = pbl_ptr; 856 params->pbl_two_level = 0; 857 } 858 859 static void doorbell_cq(struct qedr_cq *cq, u32 cons, u8 flags) 860 { 861 cq->db.data.agg_flags = flags; 862 cq->db.data.value = cpu_to_le32(cons); 863 writeq(cq->db.raw, cq->db_addr); 864 } 865 866 int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 867 { 868 struct qedr_cq *cq = get_qedr_cq(ibcq); 869 unsigned long sflags; 870 struct qedr_dev *dev; 871 872 dev = get_qedr_dev(ibcq->device); 873 874 if (cq->destroyed) { 875 DP_ERR(dev, 876 "warning: arm was invoked after destroy for cq %p (icid=%d)\n", 877 cq, cq->icid); 878 return -EINVAL; 879 } 880 881 882 if (cq->cq_type == QEDR_CQ_TYPE_GSI) 883 return 0; 884 885 spin_lock_irqsave(&cq->cq_lock, sflags); 886 887 cq->arm_flags = 0; 888 889 if (flags & IB_CQ_SOLICITED) 890 cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_SE_CF_CMD; 891 892 if (flags & IB_CQ_NEXT_COMP) 893 cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_CF_CMD; 894 895 doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags); 896 897 spin_unlock_irqrestore(&cq->cq_lock, sflags); 898 899 return 0; 900 } 901 902 int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 903 struct ib_udata *udata) 904 { 905 struct ib_device *ibdev = ibcq->device; 906 struct qedr_ucontext *ctx = rdma_udata_to_drv_context( 907 udata, struct qedr_ucontext, ibucontext); 908 struct qed_rdma_destroy_cq_out_params destroy_oparams; 909 struct qed_rdma_destroy_cq_in_params destroy_iparams; 910 struct qed_chain_init_params chain_params = { 911 .mode = QED_CHAIN_MODE_PBL, 912 .intended_use = QED_CHAIN_USE_TO_CONSUME, 913 .cnt_type = QED_CHAIN_CNT_TYPE_U32, 914 .elem_size = sizeof(union rdma_cqe), 915 }; 916 struct qedr_dev *dev = get_qedr_dev(ibdev); 917 struct qed_rdma_create_cq_in_params params; 918 struct qedr_create_cq_ureq ureq = {}; 919 int vector = attr->comp_vector; 920 int entries = attr->cqe; 921 struct qedr_cq *cq = get_qedr_cq(ibcq); 922 int chain_entries; 923 u32 db_offset; 924 int page_cnt; 925 u64 pbl_ptr; 926 u16 icid; 927 int rc; 928 929 DP_DEBUG(dev, QEDR_MSG_INIT, 930 "create_cq: called from %s. entries=%d, vector=%d\n", 931 udata ? "User Lib" : "Kernel", entries, vector); 932 933 if (attr->flags) 934 return -EOPNOTSUPP; 935 936 if (entries > QEDR_MAX_CQES) { 937 DP_ERR(dev, 938 "create cq: the number of entries %d is too high. Must be equal or below %d.\n", 939 entries, QEDR_MAX_CQES); 940 return -EINVAL; 941 } 942 943 chain_entries = qedr_align_cq_entries(entries); 944 chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES); 945 chain_params.num_elems = chain_entries; 946 947 /* calc db offset. user will add DPI base, kernel will add db addr */ 948 db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT); 949 950 if (udata) { 951 if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), 952 udata->inlen))) { 953 DP_ERR(dev, 954 "create cq: problem copying data from user space\n"); 955 goto err0; 956 } 957 958 if (!ureq.len) { 959 DP_ERR(dev, 960 "create cq: cannot create a cq with 0 entries\n"); 961 goto err0; 962 } 963 964 cq->cq_type = QEDR_CQ_TYPE_USER; 965 966 rc = qedr_init_user_queue(udata, dev, &cq->q, ureq.addr, 967 ureq.len, true, IB_ACCESS_LOCAL_WRITE, 968 1); 969 if (rc) 970 goto err0; 971 972 pbl_ptr = cq->q.pbl_tbl->pa; 973 page_cnt = cq->q.pbl_info.num_pbes; 974 975 cq->ibcq.cqe = chain_entries; 976 cq->q.db_addr = ctx->dpi_addr + db_offset; 977 } else { 978 cq->cq_type = QEDR_CQ_TYPE_KERNEL; 979 980 rc = dev->ops->common->chain_alloc(dev->cdev, &cq->pbl, 981 &chain_params); 982 if (rc) 983 goto err0; 984 985 page_cnt = qed_chain_get_page_cnt(&cq->pbl); 986 pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl); 987 cq->ibcq.cqe = cq->pbl.capacity; 988 } 989 990 qedr_init_cq_params(cq, ctx, dev, vector, chain_entries, page_cnt, 991 pbl_ptr, ¶ms); 992 993 rc = dev->ops->rdma_create_cq(dev->rdma_ctx, ¶ms, &icid); 994 if (rc) 995 goto err1; 996 997 cq->icid = icid; 998 cq->sig = QEDR_CQ_MAGIC_NUMBER; 999 spin_lock_init(&cq->cq_lock); 1000 1001 if (udata) { 1002 rc = qedr_copy_cq_uresp(dev, cq, udata, db_offset); 1003 if (rc) 1004 goto err2; 1005 1006 rc = qedr_db_recovery_add(dev, cq->q.db_addr, 1007 &cq->q.db_rec_data->db_data, 1008 DB_REC_WIDTH_64B, 1009 DB_REC_USER); 1010 if (rc) 1011 goto err2; 1012 1013 } else { 1014 /* Generate doorbell address. */ 1015 cq->db.data.icid = cq->icid; 1016 cq->db_addr = dev->db_addr + db_offset; 1017 cq->db.data.params = DB_AGG_CMD_MAX << 1018 RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT; 1019 1020 /* point to the very last element, passing it we will toggle */ 1021 cq->toggle_cqe = qed_chain_get_last_elem(&cq->pbl); 1022 cq->pbl_toggle = RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK; 1023 cq->latest_cqe = NULL; 1024 consume_cqe(cq); 1025 cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl); 1026 1027 rc = qedr_db_recovery_add(dev, cq->db_addr, &cq->db.data, 1028 DB_REC_WIDTH_64B, DB_REC_KERNEL); 1029 if (rc) 1030 goto err2; 1031 } 1032 1033 DP_DEBUG(dev, QEDR_MSG_CQ, 1034 "create cq: icid=0x%0x, addr=%p, size(entries)=0x%0x\n", 1035 cq->icid, cq, params.cq_size); 1036 1037 return 0; 1038 1039 err2: 1040 destroy_iparams.icid = cq->icid; 1041 dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams, 1042 &destroy_oparams); 1043 err1: 1044 if (udata) { 1045 qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl); 1046 ib_umem_release(cq->q.umem); 1047 if (cq->q.db_mmap_entry) 1048 rdma_user_mmap_entry_remove(cq->q.db_mmap_entry); 1049 } else { 1050 dev->ops->common->chain_free(dev->cdev, &cq->pbl); 1051 } 1052 err0: 1053 return -EINVAL; 1054 } 1055 1056 #define QEDR_DESTROY_CQ_MAX_ITERATIONS (10) 1057 #define QEDR_DESTROY_CQ_ITER_DURATION (10) 1058 1059 int qedr_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) 1060 { 1061 struct qedr_dev *dev = get_qedr_dev(ibcq->device); 1062 struct qed_rdma_destroy_cq_out_params oparams; 1063 struct qed_rdma_destroy_cq_in_params iparams; 1064 struct qedr_cq *cq = get_qedr_cq(ibcq); 1065 int iter; 1066 1067 DP_DEBUG(dev, QEDR_MSG_CQ, "destroy cq %p (icid=%d)\n", cq, cq->icid); 1068 1069 cq->destroyed = 1; 1070 1071 /* GSIs CQs are handled by driver, so they don't exist in the FW */ 1072 if (cq->cq_type == QEDR_CQ_TYPE_GSI) { 1073 qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data); 1074 return 0; 1075 } 1076 1077 iparams.icid = cq->icid; 1078 dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams); 1079 dev->ops->common->chain_free(dev->cdev, &cq->pbl); 1080 1081 if (udata) { 1082 qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl); 1083 ib_umem_release(cq->q.umem); 1084 1085 if (cq->q.db_rec_data) { 1086 qedr_db_recovery_del(dev, cq->q.db_addr, 1087 &cq->q.db_rec_data->db_data); 1088 rdma_user_mmap_entry_remove(cq->q.db_mmap_entry); 1089 } 1090 } else { 1091 qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data); 1092 } 1093 1094 /* We don't want the IRQ handler to handle a non-existing CQ so we 1095 * wait until all CNQ interrupts, if any, are received. This will always 1096 * happen and will always happen very fast. If not, then a serious error 1097 * has occured. That is why we can use a long delay. 1098 * We spin for a short time so we don’t lose time on context switching 1099 * in case all the completions are handled in that span. Otherwise 1100 * we sleep for a while and check again. Since the CNQ may be 1101 * associated with (only) the current CPU we use msleep to allow the 1102 * current CPU to be freed. 1103 * The CNQ notification is increased in qedr_irq_handler(). 1104 */ 1105 iter = QEDR_DESTROY_CQ_MAX_ITERATIONS; 1106 while (oparams.num_cq_notif != READ_ONCE(cq->cnq_notif) && iter) { 1107 udelay(QEDR_DESTROY_CQ_ITER_DURATION); 1108 iter--; 1109 } 1110 1111 iter = QEDR_DESTROY_CQ_MAX_ITERATIONS; 1112 while (oparams.num_cq_notif != READ_ONCE(cq->cnq_notif) && iter) { 1113 msleep(QEDR_DESTROY_CQ_ITER_DURATION); 1114 iter--; 1115 } 1116 1117 /* Note that we don't need to have explicit code to wait for the 1118 * completion of the event handler because it is invoked from the EQ. 1119 * Since the destroy CQ ramrod has also been received on the EQ we can 1120 * be certain that there's no event handler in process. 1121 */ 1122 return 0; 1123 } 1124 1125 static inline int get_gid_info_from_table(struct ib_qp *ibqp, 1126 struct ib_qp_attr *attr, 1127 int attr_mask, 1128 struct qed_rdma_modify_qp_in_params 1129 *qp_params) 1130 { 1131 const struct ib_gid_attr *gid_attr; 1132 enum rdma_network_type nw_type; 1133 const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr); 1134 u32 ipv4_addr; 1135 int ret; 1136 int i; 1137 1138 gid_attr = grh->sgid_attr; 1139 ret = rdma_read_gid_l2_fields(gid_attr, &qp_params->vlan_id, NULL); 1140 if (ret) 1141 return ret; 1142 1143 nw_type = rdma_gid_attr_network_type(gid_attr); 1144 switch (nw_type) { 1145 case RDMA_NETWORK_IPV6: 1146 memcpy(&qp_params->sgid.bytes[0], &gid_attr->gid.raw[0], 1147 sizeof(qp_params->sgid)); 1148 memcpy(&qp_params->dgid.bytes[0], 1149 &grh->dgid, 1150 sizeof(qp_params->dgid)); 1151 qp_params->roce_mode = ROCE_V2_IPV6; 1152 SET_FIELD(qp_params->modify_flags, 1153 QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1); 1154 break; 1155 case RDMA_NETWORK_ROCE_V1: 1156 memcpy(&qp_params->sgid.bytes[0], &gid_attr->gid.raw[0], 1157 sizeof(qp_params->sgid)); 1158 memcpy(&qp_params->dgid.bytes[0], 1159 &grh->dgid, 1160 sizeof(qp_params->dgid)); 1161 qp_params->roce_mode = ROCE_V1; 1162 break; 1163 case RDMA_NETWORK_IPV4: 1164 memset(&qp_params->sgid, 0, sizeof(qp_params->sgid)); 1165 memset(&qp_params->dgid, 0, sizeof(qp_params->dgid)); 1166 ipv4_addr = qedr_get_ipv4_from_gid(gid_attr->gid.raw); 1167 qp_params->sgid.ipv4_addr = ipv4_addr; 1168 ipv4_addr = 1169 qedr_get_ipv4_from_gid(grh->dgid.raw); 1170 qp_params->dgid.ipv4_addr = ipv4_addr; 1171 SET_FIELD(qp_params->modify_flags, 1172 QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1); 1173 qp_params->roce_mode = ROCE_V2_IPV4; 1174 break; 1175 default: 1176 return -EINVAL; 1177 } 1178 1179 for (i = 0; i < 4; i++) { 1180 qp_params->sgid.dwords[i] = ntohl(qp_params->sgid.dwords[i]); 1181 qp_params->dgid.dwords[i] = ntohl(qp_params->dgid.dwords[i]); 1182 } 1183 1184 if (qp_params->vlan_id >= VLAN_CFI_MASK) 1185 qp_params->vlan_id = 0; 1186 1187 return 0; 1188 } 1189 1190 static int qedr_check_qp_attrs(struct ib_pd *ibpd, struct qedr_dev *dev, 1191 struct ib_qp_init_attr *attrs, 1192 struct ib_udata *udata) 1193 { 1194 struct qedr_device_attr *qattr = &dev->attr; 1195 1196 /* QP0... attrs->qp_type == IB_QPT_GSI */ 1197 if (attrs->qp_type != IB_QPT_RC && 1198 attrs->qp_type != IB_QPT_GSI && 1199 attrs->qp_type != IB_QPT_XRC_INI && 1200 attrs->qp_type != IB_QPT_XRC_TGT) { 1201 DP_DEBUG(dev, QEDR_MSG_QP, 1202 "create qp: unsupported qp type=0x%x requested\n", 1203 attrs->qp_type); 1204 return -EOPNOTSUPP; 1205 } 1206 1207 if (attrs->cap.max_send_wr > qattr->max_sqe) { 1208 DP_ERR(dev, 1209 "create qp: cannot create a SQ with %d elements (max_send_wr=0x%x)\n", 1210 attrs->cap.max_send_wr, qattr->max_sqe); 1211 return -EINVAL; 1212 } 1213 1214 if (attrs->cap.max_inline_data > qattr->max_inline) { 1215 DP_ERR(dev, 1216 "create qp: unsupported inline data size=0x%x requested (max_inline=0x%x)\n", 1217 attrs->cap.max_inline_data, qattr->max_inline); 1218 return -EINVAL; 1219 } 1220 1221 if (attrs->cap.max_send_sge > qattr->max_sge) { 1222 DP_ERR(dev, 1223 "create qp: unsupported send_sge=0x%x requested (max_send_sge=0x%x)\n", 1224 attrs->cap.max_send_sge, qattr->max_sge); 1225 return -EINVAL; 1226 } 1227 1228 if (attrs->cap.max_recv_sge > qattr->max_sge) { 1229 DP_ERR(dev, 1230 "create qp: unsupported recv_sge=0x%x requested (max_recv_sge=0x%x)\n", 1231 attrs->cap.max_recv_sge, qattr->max_sge); 1232 return -EINVAL; 1233 } 1234 1235 /* verify consumer QPs are not trying to use GSI QP's CQ. 1236 * TGT QP isn't associated with RQ/SQ 1237 */ 1238 if ((attrs->qp_type != IB_QPT_GSI) && (dev->gsi_qp_created) && 1239 (attrs->qp_type != IB_QPT_XRC_TGT) && 1240 (attrs->qp_type != IB_QPT_XRC_INI)) { 1241 struct qedr_cq *send_cq = get_qedr_cq(attrs->send_cq); 1242 struct qedr_cq *recv_cq = get_qedr_cq(attrs->recv_cq); 1243 1244 if ((send_cq->cq_type == QEDR_CQ_TYPE_GSI) || 1245 (recv_cq->cq_type == QEDR_CQ_TYPE_GSI)) { 1246 DP_ERR(dev, 1247 "create qp: consumer QP cannot use GSI CQs.\n"); 1248 return -EINVAL; 1249 } 1250 } 1251 1252 return 0; 1253 } 1254 1255 static int qedr_copy_srq_uresp(struct qedr_dev *dev, 1256 struct qedr_srq *srq, struct ib_udata *udata) 1257 { 1258 struct qedr_create_srq_uresp uresp = {}; 1259 int rc; 1260 1261 uresp.srq_id = srq->srq_id; 1262 1263 rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); 1264 if (rc) 1265 DP_ERR(dev, "create srq: problem copying data to user space\n"); 1266 1267 return rc; 1268 } 1269 1270 static void qedr_copy_rq_uresp(struct qedr_dev *dev, 1271 struct qedr_create_qp_uresp *uresp, 1272 struct qedr_qp *qp) 1273 { 1274 /* iWARP requires two doorbells per RQ. */ 1275 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 1276 uresp->rq_db_offset = 1277 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_IWARP_RQ_PROD); 1278 uresp->rq_db2_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_FLAGS); 1279 } else { 1280 uresp->rq_db_offset = 1281 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD); 1282 } 1283 1284 uresp->rq_icid = qp->icid; 1285 if (qp->urq.db_mmap_entry) 1286 uresp->rq_db_rec_addr = 1287 rdma_user_mmap_get_offset(qp->urq.db_mmap_entry); 1288 } 1289 1290 static void qedr_copy_sq_uresp(struct qedr_dev *dev, 1291 struct qedr_create_qp_uresp *uresp, 1292 struct qedr_qp *qp) 1293 { 1294 uresp->sq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD); 1295 1296 /* iWARP uses the same cid for rq and sq */ 1297 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 1298 uresp->sq_icid = qp->icid; 1299 else 1300 uresp->sq_icid = qp->icid + 1; 1301 1302 if (qp->usq.db_mmap_entry) 1303 uresp->sq_db_rec_addr = 1304 rdma_user_mmap_get_offset(qp->usq.db_mmap_entry); 1305 } 1306 1307 static int qedr_copy_qp_uresp(struct qedr_dev *dev, 1308 struct qedr_qp *qp, struct ib_udata *udata, 1309 struct qedr_create_qp_uresp *uresp) 1310 { 1311 int rc; 1312 1313 memset(uresp, 0, sizeof(*uresp)); 1314 1315 if (qedr_qp_has_sq(qp)) 1316 qedr_copy_sq_uresp(dev, uresp, qp); 1317 1318 if (qedr_qp_has_rq(qp)) 1319 qedr_copy_rq_uresp(dev, uresp, qp); 1320 1321 uresp->atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE; 1322 uresp->qp_id = qp->qp_id; 1323 1324 rc = qedr_ib_copy_to_udata(udata, uresp, sizeof(*uresp)); 1325 if (rc) 1326 DP_ERR(dev, 1327 "create qp: failed a copy to user space with qp icid=0x%x.\n", 1328 qp->icid); 1329 1330 return rc; 1331 } 1332 1333 static void qedr_reset_qp_hwq_info(struct qedr_qp_hwq_info *qph) 1334 { 1335 qed_chain_reset(&qph->pbl); 1336 qph->prod = 0; 1337 qph->cons = 0; 1338 qph->wqe_cons = 0; 1339 qph->db_data.data.value = cpu_to_le16(0); 1340 } 1341 1342 static void qedr_set_common_qp_params(struct qedr_dev *dev, 1343 struct qedr_qp *qp, 1344 struct qedr_pd *pd, 1345 struct ib_qp_init_attr *attrs) 1346 { 1347 spin_lock_init(&qp->q_lock); 1348 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 1349 kref_init(&qp->refcnt); 1350 init_completion(&qp->iwarp_cm_comp); 1351 init_completion(&qp->qp_rel_comp); 1352 } 1353 1354 qp->pd = pd; 1355 qp->qp_type = attrs->qp_type; 1356 qp->max_inline_data = attrs->cap.max_inline_data; 1357 qp->state = QED_ROCE_QP_STATE_RESET; 1358 1359 qp->prev_wqe_size = 0; 1360 1361 qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false; 1362 qp->dev = dev; 1363 if (qedr_qp_has_sq(qp)) { 1364 qedr_reset_qp_hwq_info(&qp->sq); 1365 qp->sq.max_sges = attrs->cap.max_send_sge; 1366 qp->sq_cq = get_qedr_cq(attrs->send_cq); 1367 DP_DEBUG(dev, QEDR_MSG_QP, 1368 "SQ params:\tsq_max_sges = %d, sq_cq_id = %d\n", 1369 qp->sq.max_sges, qp->sq_cq->icid); 1370 } 1371 1372 if (attrs->srq) 1373 qp->srq = get_qedr_srq(attrs->srq); 1374 1375 if (qedr_qp_has_rq(qp)) { 1376 qedr_reset_qp_hwq_info(&qp->rq); 1377 qp->rq_cq = get_qedr_cq(attrs->recv_cq); 1378 qp->rq.max_sges = attrs->cap.max_recv_sge; 1379 DP_DEBUG(dev, QEDR_MSG_QP, 1380 "RQ params:\trq_max_sges = %d, rq_cq_id = %d\n", 1381 qp->rq.max_sges, qp->rq_cq->icid); 1382 } 1383 1384 DP_DEBUG(dev, QEDR_MSG_QP, 1385 "QP params:\tpd = %d, qp_type = %d, max_inline_data = %d, state = %d, signaled = %d, use_srq=%d\n", 1386 pd->pd_id, qp->qp_type, qp->max_inline_data, 1387 qp->state, qp->signaled, (attrs->srq) ? 1 : 0); 1388 DP_DEBUG(dev, QEDR_MSG_QP, 1389 "SQ params:\tsq_max_sges = %d, sq_cq_id = %d\n", 1390 qp->sq.max_sges, qp->sq_cq->icid); 1391 } 1392 1393 static int qedr_set_roce_db_info(struct qedr_dev *dev, struct qedr_qp *qp) 1394 { 1395 int rc = 0; 1396 1397 if (qedr_qp_has_sq(qp)) { 1398 qp->sq.db = dev->db_addr + 1399 DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD); 1400 qp->sq.db_data.data.icid = qp->icid + 1; 1401 rc = qedr_db_recovery_add(dev, qp->sq.db, &qp->sq.db_data, 1402 DB_REC_WIDTH_32B, DB_REC_KERNEL); 1403 if (rc) 1404 return rc; 1405 } 1406 1407 if (qedr_qp_has_rq(qp)) { 1408 qp->rq.db = dev->db_addr + 1409 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD); 1410 qp->rq.db_data.data.icid = qp->icid; 1411 rc = qedr_db_recovery_add(dev, qp->rq.db, &qp->rq.db_data, 1412 DB_REC_WIDTH_32B, DB_REC_KERNEL); 1413 if (rc && qedr_qp_has_sq(qp)) 1414 qedr_db_recovery_del(dev, qp->sq.db, &qp->sq.db_data); 1415 } 1416 1417 return rc; 1418 } 1419 1420 static int qedr_check_srq_params(struct qedr_dev *dev, 1421 struct ib_srq_init_attr *attrs, 1422 struct ib_udata *udata) 1423 { 1424 struct qedr_device_attr *qattr = &dev->attr; 1425 1426 if (attrs->attr.max_wr > qattr->max_srq_wr) { 1427 DP_ERR(dev, 1428 "create srq: unsupported srq_wr=0x%x requested (max_srq_wr=0x%x)\n", 1429 attrs->attr.max_wr, qattr->max_srq_wr); 1430 return -EINVAL; 1431 } 1432 1433 if (attrs->attr.max_sge > qattr->max_sge) { 1434 DP_ERR(dev, 1435 "create srq: unsupported sge=0x%x requested (max_srq_sge=0x%x)\n", 1436 attrs->attr.max_sge, qattr->max_sge); 1437 } 1438 1439 if (!udata && attrs->srq_type == IB_SRQT_XRC) { 1440 DP_ERR(dev, "XRC SRQs are not supported in kernel-space\n"); 1441 return -EINVAL; 1442 } 1443 1444 return 0; 1445 } 1446 1447 static void qedr_free_srq_user_params(struct qedr_srq *srq) 1448 { 1449 qedr_free_pbl(srq->dev, &srq->usrq.pbl_info, srq->usrq.pbl_tbl); 1450 ib_umem_release(srq->usrq.umem); 1451 ib_umem_release(srq->prod_umem); 1452 } 1453 1454 static void qedr_free_srq_kernel_params(struct qedr_srq *srq) 1455 { 1456 struct qedr_srq_hwq_info *hw_srq = &srq->hw_srq; 1457 struct qedr_dev *dev = srq->dev; 1458 1459 dev->ops->common->chain_free(dev->cdev, &hw_srq->pbl); 1460 1461 dma_free_coherent(&dev->pdev->dev, sizeof(struct rdma_srq_producers), 1462 hw_srq->virt_prod_pair_addr, 1463 hw_srq->phy_prod_pair_addr); 1464 } 1465 1466 static int qedr_init_srq_user_params(struct ib_udata *udata, 1467 struct qedr_srq *srq, 1468 struct qedr_create_srq_ureq *ureq, 1469 int access) 1470 { 1471 struct scatterlist *sg; 1472 int rc; 1473 1474 rc = qedr_init_user_queue(udata, srq->dev, &srq->usrq, ureq->srq_addr, 1475 ureq->srq_len, false, access, 1); 1476 if (rc) 1477 return rc; 1478 1479 srq->prod_umem = ib_umem_get(srq->ibsrq.device, ureq->prod_pair_addr, 1480 sizeof(struct rdma_srq_producers), access); 1481 if (IS_ERR(srq->prod_umem)) { 1482 qedr_free_pbl(srq->dev, &srq->usrq.pbl_info, srq->usrq.pbl_tbl); 1483 ib_umem_release(srq->usrq.umem); 1484 DP_ERR(srq->dev, 1485 "create srq: failed ib_umem_get for producer, got %ld\n", 1486 PTR_ERR(srq->prod_umem)); 1487 return PTR_ERR(srq->prod_umem); 1488 } 1489 1490 sg = srq->prod_umem->sgt_append.sgt.sgl; 1491 srq->hw_srq.phy_prod_pair_addr = sg_dma_address(sg); 1492 1493 return 0; 1494 } 1495 1496 static int qedr_alloc_srq_kernel_params(struct qedr_srq *srq, 1497 struct qedr_dev *dev, 1498 struct ib_srq_init_attr *init_attr) 1499 { 1500 struct qedr_srq_hwq_info *hw_srq = &srq->hw_srq; 1501 struct qed_chain_init_params params = { 1502 .mode = QED_CHAIN_MODE_PBL, 1503 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1504 .cnt_type = QED_CHAIN_CNT_TYPE_U32, 1505 .elem_size = QEDR_SRQ_WQE_ELEM_SIZE, 1506 }; 1507 dma_addr_t phy_prod_pair_addr; 1508 u32 num_elems; 1509 void *va; 1510 int rc; 1511 1512 va = dma_alloc_coherent(&dev->pdev->dev, 1513 sizeof(struct rdma_srq_producers), 1514 &phy_prod_pair_addr, GFP_KERNEL); 1515 if (!va) { 1516 DP_ERR(dev, 1517 "create srq: failed to allocate dma memory for producer\n"); 1518 return -ENOMEM; 1519 } 1520 1521 hw_srq->phy_prod_pair_addr = phy_prod_pair_addr; 1522 hw_srq->virt_prod_pair_addr = va; 1523 1524 num_elems = init_attr->attr.max_wr * RDMA_MAX_SRQ_WQE_SIZE; 1525 params.num_elems = num_elems; 1526 1527 rc = dev->ops->common->chain_alloc(dev->cdev, &hw_srq->pbl, ¶ms); 1528 if (rc) 1529 goto err0; 1530 1531 hw_srq->num_elems = num_elems; 1532 1533 return 0; 1534 1535 err0: 1536 dma_free_coherent(&dev->pdev->dev, sizeof(struct rdma_srq_producers), 1537 va, phy_prod_pair_addr); 1538 return rc; 1539 } 1540 1541 int qedr_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr, 1542 struct ib_udata *udata) 1543 { 1544 struct qed_rdma_destroy_srq_in_params destroy_in_params; 1545 struct qed_rdma_create_srq_in_params in_params = {}; 1546 struct qedr_dev *dev = get_qedr_dev(ibsrq->device); 1547 struct qed_rdma_create_srq_out_params out_params; 1548 struct qedr_pd *pd = get_qedr_pd(ibsrq->pd); 1549 struct qedr_create_srq_ureq ureq = {}; 1550 u64 pbl_base_addr, phy_prod_pair_addr; 1551 struct qedr_srq_hwq_info *hw_srq; 1552 u32 page_cnt, page_size; 1553 struct qedr_srq *srq = get_qedr_srq(ibsrq); 1554 int rc = 0; 1555 1556 DP_DEBUG(dev, QEDR_MSG_QP, 1557 "create SRQ called from %s (pd %p)\n", 1558 (udata) ? "User lib" : "kernel", pd); 1559 1560 if (init_attr->srq_type != IB_SRQT_BASIC && 1561 init_attr->srq_type != IB_SRQT_XRC) 1562 return -EOPNOTSUPP; 1563 1564 rc = qedr_check_srq_params(dev, init_attr, udata); 1565 if (rc) 1566 return -EINVAL; 1567 1568 srq->dev = dev; 1569 srq->is_xrc = (init_attr->srq_type == IB_SRQT_XRC); 1570 hw_srq = &srq->hw_srq; 1571 spin_lock_init(&srq->lock); 1572 1573 hw_srq->max_wr = init_attr->attr.max_wr; 1574 hw_srq->max_sges = init_attr->attr.max_sge; 1575 1576 if (udata) { 1577 if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), 1578 udata->inlen))) { 1579 DP_ERR(dev, 1580 "create srq: problem copying data from user space\n"); 1581 goto err0; 1582 } 1583 1584 rc = qedr_init_srq_user_params(udata, srq, &ureq, 0); 1585 if (rc) 1586 goto err0; 1587 1588 page_cnt = srq->usrq.pbl_info.num_pbes; 1589 pbl_base_addr = srq->usrq.pbl_tbl->pa; 1590 phy_prod_pair_addr = hw_srq->phy_prod_pair_addr; 1591 page_size = PAGE_SIZE; 1592 } else { 1593 struct qed_chain *pbl; 1594 1595 rc = qedr_alloc_srq_kernel_params(srq, dev, init_attr); 1596 if (rc) 1597 goto err0; 1598 1599 pbl = &hw_srq->pbl; 1600 page_cnt = qed_chain_get_page_cnt(pbl); 1601 pbl_base_addr = qed_chain_get_pbl_phys(pbl); 1602 phy_prod_pair_addr = hw_srq->phy_prod_pair_addr; 1603 page_size = QED_CHAIN_PAGE_SIZE; 1604 } 1605 1606 in_params.pd_id = pd->pd_id; 1607 in_params.pbl_base_addr = pbl_base_addr; 1608 in_params.prod_pair_addr = phy_prod_pair_addr; 1609 in_params.num_pages = page_cnt; 1610 in_params.page_size = page_size; 1611 if (srq->is_xrc) { 1612 struct qedr_xrcd *xrcd = get_qedr_xrcd(init_attr->ext.xrc.xrcd); 1613 struct qedr_cq *cq = get_qedr_cq(init_attr->ext.cq); 1614 1615 in_params.is_xrc = 1; 1616 in_params.xrcd_id = xrcd->xrcd_id; 1617 in_params.cq_cid = cq->icid; 1618 } 1619 1620 rc = dev->ops->rdma_create_srq(dev->rdma_ctx, &in_params, &out_params); 1621 if (rc) 1622 goto err1; 1623 1624 srq->srq_id = out_params.srq_id; 1625 1626 if (udata) { 1627 rc = qedr_copy_srq_uresp(dev, srq, udata); 1628 if (rc) 1629 goto err2; 1630 } 1631 1632 rc = xa_insert_irq(&dev->srqs, srq->srq_id, srq, GFP_KERNEL); 1633 if (rc) 1634 goto err2; 1635 1636 DP_DEBUG(dev, QEDR_MSG_SRQ, 1637 "create srq: created srq with srq_id=0x%0x\n", srq->srq_id); 1638 return 0; 1639 1640 err2: 1641 destroy_in_params.srq_id = srq->srq_id; 1642 1643 dev->ops->rdma_destroy_srq(dev->rdma_ctx, &destroy_in_params); 1644 err1: 1645 if (udata) 1646 qedr_free_srq_user_params(srq); 1647 else 1648 qedr_free_srq_kernel_params(srq); 1649 err0: 1650 return -EFAULT; 1651 } 1652 1653 int qedr_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata) 1654 { 1655 struct qed_rdma_destroy_srq_in_params in_params = {}; 1656 struct qedr_dev *dev = get_qedr_dev(ibsrq->device); 1657 struct qedr_srq *srq = get_qedr_srq(ibsrq); 1658 1659 xa_erase_irq(&dev->srqs, srq->srq_id); 1660 in_params.srq_id = srq->srq_id; 1661 in_params.is_xrc = srq->is_xrc; 1662 dev->ops->rdma_destroy_srq(dev->rdma_ctx, &in_params); 1663 1664 if (ibsrq->uobject) 1665 qedr_free_srq_user_params(srq); 1666 else 1667 qedr_free_srq_kernel_params(srq); 1668 1669 DP_DEBUG(dev, QEDR_MSG_SRQ, 1670 "destroy srq: destroyed srq with srq_id=0x%0x\n", 1671 srq->srq_id); 1672 return 0; 1673 } 1674 1675 int qedr_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 1676 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata) 1677 { 1678 struct qed_rdma_modify_srq_in_params in_params = {}; 1679 struct qedr_dev *dev = get_qedr_dev(ibsrq->device); 1680 struct qedr_srq *srq = get_qedr_srq(ibsrq); 1681 int rc; 1682 1683 if (attr_mask & IB_SRQ_MAX_WR) { 1684 DP_ERR(dev, 1685 "modify srq: invalid attribute mask=0x%x specified for %p\n", 1686 attr_mask, srq); 1687 return -EINVAL; 1688 } 1689 1690 if (attr_mask & IB_SRQ_LIMIT) { 1691 if (attr->srq_limit >= srq->hw_srq.max_wr) { 1692 DP_ERR(dev, 1693 "modify srq: invalid srq_limit=0x%x (max_srq_limit=0x%x)\n", 1694 attr->srq_limit, srq->hw_srq.max_wr); 1695 return -EINVAL; 1696 } 1697 1698 in_params.srq_id = srq->srq_id; 1699 in_params.wqe_limit = attr->srq_limit; 1700 rc = dev->ops->rdma_modify_srq(dev->rdma_ctx, &in_params); 1701 if (rc) 1702 return rc; 1703 } 1704 1705 srq->srq_limit = attr->srq_limit; 1706 1707 DP_DEBUG(dev, QEDR_MSG_SRQ, 1708 "modify srq: modified srq with srq_id=0x%0x\n", srq->srq_id); 1709 1710 return 0; 1711 } 1712 1713 static enum qed_rdma_qp_type qedr_ib_to_qed_qp_type(enum ib_qp_type ib_qp_type) 1714 { 1715 switch (ib_qp_type) { 1716 case IB_QPT_RC: 1717 return QED_RDMA_QP_TYPE_RC; 1718 case IB_QPT_XRC_INI: 1719 return QED_RDMA_QP_TYPE_XRC_INI; 1720 case IB_QPT_XRC_TGT: 1721 return QED_RDMA_QP_TYPE_XRC_TGT; 1722 default: 1723 return QED_RDMA_QP_TYPE_INVAL; 1724 } 1725 } 1726 1727 static inline void 1728 qedr_init_common_qp_in_params(struct qedr_dev *dev, 1729 struct qedr_pd *pd, 1730 struct qedr_qp *qp, 1731 struct ib_qp_init_attr *attrs, 1732 bool fmr_and_reserved_lkey, 1733 struct qed_rdma_create_qp_in_params *params) 1734 { 1735 /* QP handle to be written in an async event */ 1736 params->qp_handle_async_lo = lower_32_bits((uintptr_t) qp); 1737 params->qp_handle_async_hi = upper_32_bits((uintptr_t) qp); 1738 1739 params->signal_all = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR); 1740 params->fmr_and_reserved_lkey = fmr_and_reserved_lkey; 1741 params->qp_type = qedr_ib_to_qed_qp_type(attrs->qp_type); 1742 params->stats_queue = 0; 1743 1744 if (pd) { 1745 params->pd = pd->pd_id; 1746 params->dpi = pd->uctx ? pd->uctx->dpi : dev->dpi; 1747 } 1748 1749 if (qedr_qp_has_sq(qp)) 1750 params->sq_cq_id = get_qedr_cq(attrs->send_cq)->icid; 1751 1752 if (qedr_qp_has_rq(qp)) 1753 params->rq_cq_id = get_qedr_cq(attrs->recv_cq)->icid; 1754 1755 if (qedr_qp_has_srq(qp)) { 1756 params->rq_cq_id = get_qedr_cq(attrs->recv_cq)->icid; 1757 params->srq_id = qp->srq->srq_id; 1758 params->use_srq = true; 1759 } else { 1760 params->srq_id = 0; 1761 params->use_srq = false; 1762 } 1763 } 1764 1765 static inline void qedr_qp_user_print(struct qedr_dev *dev, struct qedr_qp *qp) 1766 { 1767 DP_DEBUG(dev, QEDR_MSG_QP, "create qp: successfully created user QP. " 1768 "qp=%p. " 1769 "sq_addr=0x%llx, " 1770 "sq_len=%zd, " 1771 "rq_addr=0x%llx, " 1772 "rq_len=%zd" 1773 "\n", 1774 qp, 1775 qedr_qp_has_sq(qp) ? qp->usq.buf_addr : 0x0, 1776 qedr_qp_has_sq(qp) ? qp->usq.buf_len : 0, 1777 qedr_qp_has_rq(qp) ? qp->urq.buf_addr : 0x0, 1778 qedr_qp_has_sq(qp) ? qp->urq.buf_len : 0); 1779 } 1780 1781 static inline void 1782 qedr_iwarp_populate_user_qp(struct qedr_dev *dev, 1783 struct qedr_qp *qp, 1784 struct qed_rdma_create_qp_out_params *out_params) 1785 { 1786 qp->usq.pbl_tbl->va = out_params->sq_pbl_virt; 1787 qp->usq.pbl_tbl->pa = out_params->sq_pbl_phys; 1788 1789 qedr_populate_pbls(dev, qp->usq.umem, qp->usq.pbl_tbl, 1790 &qp->usq.pbl_info, FW_PAGE_SHIFT); 1791 if (!qp->srq) { 1792 qp->urq.pbl_tbl->va = out_params->rq_pbl_virt; 1793 qp->urq.pbl_tbl->pa = out_params->rq_pbl_phys; 1794 } 1795 1796 qedr_populate_pbls(dev, qp->urq.umem, qp->urq.pbl_tbl, 1797 &qp->urq.pbl_info, FW_PAGE_SHIFT); 1798 } 1799 1800 static void qedr_cleanup_user(struct qedr_dev *dev, 1801 struct qedr_ucontext *ctx, 1802 struct qedr_qp *qp) 1803 { 1804 if (qedr_qp_has_sq(qp)) { 1805 ib_umem_release(qp->usq.umem); 1806 qp->usq.umem = NULL; 1807 } 1808 1809 if (qedr_qp_has_rq(qp)) { 1810 ib_umem_release(qp->urq.umem); 1811 qp->urq.umem = NULL; 1812 } 1813 1814 if (rdma_protocol_roce(&dev->ibdev, 1)) { 1815 qedr_free_pbl(dev, &qp->usq.pbl_info, qp->usq.pbl_tbl); 1816 qedr_free_pbl(dev, &qp->urq.pbl_info, qp->urq.pbl_tbl); 1817 } else { 1818 kfree(qp->usq.pbl_tbl); 1819 kfree(qp->urq.pbl_tbl); 1820 } 1821 1822 if (qp->usq.db_rec_data) { 1823 qedr_db_recovery_del(dev, qp->usq.db_addr, 1824 &qp->usq.db_rec_data->db_data); 1825 rdma_user_mmap_entry_remove(qp->usq.db_mmap_entry); 1826 } 1827 1828 if (qp->urq.db_rec_data) { 1829 qedr_db_recovery_del(dev, qp->urq.db_addr, 1830 &qp->urq.db_rec_data->db_data); 1831 rdma_user_mmap_entry_remove(qp->urq.db_mmap_entry); 1832 } 1833 1834 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 1835 qedr_db_recovery_del(dev, qp->urq.db_rec_db2_addr, 1836 &qp->urq.db_rec_db2_data); 1837 } 1838 1839 static int qedr_create_user_qp(struct qedr_dev *dev, 1840 struct qedr_qp *qp, 1841 struct ib_pd *ibpd, 1842 struct ib_udata *udata, 1843 struct ib_qp_init_attr *attrs) 1844 { 1845 struct qed_rdma_create_qp_in_params in_params; 1846 struct qed_rdma_create_qp_out_params out_params; 1847 struct qedr_create_qp_uresp uresp = {}; 1848 struct qedr_create_qp_ureq ureq = {}; 1849 int alloc_and_init = rdma_protocol_roce(&dev->ibdev, 1); 1850 struct qedr_ucontext *ctx = NULL; 1851 struct qedr_pd *pd = NULL; 1852 int rc = 0; 1853 1854 qp->create_type = QEDR_QP_CREATE_USER; 1855 1856 if (ibpd) { 1857 pd = get_qedr_pd(ibpd); 1858 ctx = pd->uctx; 1859 } 1860 1861 if (udata) { 1862 rc = ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), 1863 udata->inlen)); 1864 if (rc) { 1865 DP_ERR(dev, "Problem copying data from user space\n"); 1866 return rc; 1867 } 1868 } 1869 1870 if (qedr_qp_has_sq(qp)) { 1871 /* SQ - read access only (0) */ 1872 rc = qedr_init_user_queue(udata, dev, &qp->usq, ureq.sq_addr, 1873 ureq.sq_len, true, 0, alloc_and_init); 1874 if (rc) 1875 return rc; 1876 } 1877 1878 if (qedr_qp_has_rq(qp)) { 1879 /* RQ - read access only (0) */ 1880 rc = qedr_init_user_queue(udata, dev, &qp->urq, ureq.rq_addr, 1881 ureq.rq_len, true, 0, alloc_and_init); 1882 if (rc) 1883 return rc; 1884 } 1885 1886 memset(&in_params, 0, sizeof(in_params)); 1887 qedr_init_common_qp_in_params(dev, pd, qp, attrs, false, &in_params); 1888 in_params.qp_handle_lo = ureq.qp_handle_lo; 1889 in_params.qp_handle_hi = ureq.qp_handle_hi; 1890 1891 if (qp->qp_type == IB_QPT_XRC_TGT) { 1892 struct qedr_xrcd *xrcd = get_qedr_xrcd(attrs->xrcd); 1893 1894 in_params.xrcd_id = xrcd->xrcd_id; 1895 in_params.qp_handle_lo = qp->qp_id; 1896 in_params.use_srq = 1; 1897 } 1898 1899 if (qedr_qp_has_sq(qp)) { 1900 in_params.sq_num_pages = qp->usq.pbl_info.num_pbes; 1901 in_params.sq_pbl_ptr = qp->usq.pbl_tbl->pa; 1902 } 1903 1904 if (qedr_qp_has_rq(qp)) { 1905 in_params.rq_num_pages = qp->urq.pbl_info.num_pbes; 1906 in_params.rq_pbl_ptr = qp->urq.pbl_tbl->pa; 1907 } 1908 1909 if (ctx) 1910 SET_FIELD(in_params.flags, QED_ROCE_EDPM_MODE, ctx->edpm_mode); 1911 1912 qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx, 1913 &in_params, &out_params); 1914 1915 if (!qp->qed_qp) { 1916 rc = -ENOMEM; 1917 goto err1; 1918 } 1919 1920 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 1921 qedr_iwarp_populate_user_qp(dev, qp, &out_params); 1922 1923 qp->qp_id = out_params.qp_id; 1924 qp->icid = out_params.icid; 1925 1926 if (udata) { 1927 rc = qedr_copy_qp_uresp(dev, qp, udata, &uresp); 1928 if (rc) 1929 goto err; 1930 } 1931 1932 /* db offset was calculated in copy_qp_uresp, now set in the user q */ 1933 if (qedr_qp_has_sq(qp)) { 1934 qp->usq.db_addr = ctx->dpi_addr + uresp.sq_db_offset; 1935 qp->sq.max_wr = attrs->cap.max_send_wr; 1936 rc = qedr_db_recovery_add(dev, qp->usq.db_addr, 1937 &qp->usq.db_rec_data->db_data, 1938 DB_REC_WIDTH_32B, 1939 DB_REC_USER); 1940 if (rc) 1941 goto err; 1942 } 1943 1944 if (qedr_qp_has_rq(qp)) { 1945 qp->urq.db_addr = ctx->dpi_addr + uresp.rq_db_offset; 1946 qp->rq.max_wr = attrs->cap.max_recv_wr; 1947 rc = qedr_db_recovery_add(dev, qp->urq.db_addr, 1948 &qp->urq.db_rec_data->db_data, 1949 DB_REC_WIDTH_32B, 1950 DB_REC_USER); 1951 if (rc) 1952 goto err; 1953 } 1954 1955 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 1956 qp->urq.db_rec_db2_addr = ctx->dpi_addr + uresp.rq_db2_offset; 1957 1958 /* calculate the db_rec_db2 data since it is constant so no 1959 * need to reflect from user 1960 */ 1961 qp->urq.db_rec_db2_data.data.icid = cpu_to_le16(qp->icid); 1962 qp->urq.db_rec_db2_data.data.value = 1963 cpu_to_le16(DQ_TCM_IWARP_POST_RQ_CF_CMD); 1964 1965 rc = qedr_db_recovery_add(dev, qp->urq.db_rec_db2_addr, 1966 &qp->urq.db_rec_db2_data, 1967 DB_REC_WIDTH_32B, 1968 DB_REC_USER); 1969 if (rc) 1970 goto err; 1971 } 1972 qedr_qp_user_print(dev, qp); 1973 return rc; 1974 err: 1975 rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); 1976 if (rc) 1977 DP_ERR(dev, "create qp: fatal fault. rc=%d", rc); 1978 1979 err1: 1980 qedr_cleanup_user(dev, ctx, qp); 1981 return rc; 1982 } 1983 1984 static int qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp) 1985 { 1986 int rc; 1987 1988 qp->sq.db = dev->db_addr + 1989 DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD); 1990 qp->sq.db_data.data.icid = qp->icid; 1991 1992 rc = qedr_db_recovery_add(dev, qp->sq.db, 1993 &qp->sq.db_data, 1994 DB_REC_WIDTH_32B, 1995 DB_REC_KERNEL); 1996 if (rc) 1997 return rc; 1998 1999 qp->rq.db = dev->db_addr + 2000 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_IWARP_RQ_PROD); 2001 qp->rq.db_data.data.icid = qp->icid; 2002 qp->rq.iwarp_db2 = dev->db_addr + 2003 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_FLAGS); 2004 qp->rq.iwarp_db2_data.data.icid = qp->icid; 2005 qp->rq.iwarp_db2_data.data.value = DQ_TCM_IWARP_POST_RQ_CF_CMD; 2006 2007 rc = qedr_db_recovery_add(dev, qp->rq.db, 2008 &qp->rq.db_data, 2009 DB_REC_WIDTH_32B, 2010 DB_REC_KERNEL); 2011 if (rc) 2012 return rc; 2013 2014 rc = qedr_db_recovery_add(dev, qp->rq.iwarp_db2, 2015 &qp->rq.iwarp_db2_data, 2016 DB_REC_WIDTH_32B, 2017 DB_REC_KERNEL); 2018 return rc; 2019 } 2020 2021 static int 2022 qedr_roce_create_kernel_qp(struct qedr_dev *dev, 2023 struct qedr_qp *qp, 2024 struct qed_rdma_create_qp_in_params *in_params, 2025 u32 n_sq_elems, u32 n_rq_elems) 2026 { 2027 struct qed_rdma_create_qp_out_params out_params; 2028 struct qed_chain_init_params params = { 2029 .mode = QED_CHAIN_MODE_PBL, 2030 .cnt_type = QED_CHAIN_CNT_TYPE_U32, 2031 }; 2032 int rc; 2033 2034 params.intended_use = QED_CHAIN_USE_TO_PRODUCE; 2035 params.num_elems = n_sq_elems; 2036 params.elem_size = QEDR_SQE_ELEMENT_SIZE; 2037 2038 rc = dev->ops->common->chain_alloc(dev->cdev, &qp->sq.pbl, ¶ms); 2039 if (rc) 2040 return rc; 2041 2042 in_params->sq_num_pages = qed_chain_get_page_cnt(&qp->sq.pbl); 2043 in_params->sq_pbl_ptr = qed_chain_get_pbl_phys(&qp->sq.pbl); 2044 2045 params.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE; 2046 params.num_elems = n_rq_elems; 2047 params.elem_size = QEDR_RQE_ELEMENT_SIZE; 2048 2049 rc = dev->ops->common->chain_alloc(dev->cdev, &qp->rq.pbl, ¶ms); 2050 if (rc) 2051 return rc; 2052 2053 in_params->rq_num_pages = qed_chain_get_page_cnt(&qp->rq.pbl); 2054 in_params->rq_pbl_ptr = qed_chain_get_pbl_phys(&qp->rq.pbl); 2055 2056 qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx, 2057 in_params, &out_params); 2058 2059 if (!qp->qed_qp) 2060 return -EINVAL; 2061 2062 qp->qp_id = out_params.qp_id; 2063 qp->icid = out_params.icid; 2064 2065 return qedr_set_roce_db_info(dev, qp); 2066 } 2067 2068 static int 2069 qedr_iwarp_create_kernel_qp(struct qedr_dev *dev, 2070 struct qedr_qp *qp, 2071 struct qed_rdma_create_qp_in_params *in_params, 2072 u32 n_sq_elems, u32 n_rq_elems) 2073 { 2074 struct qed_rdma_create_qp_out_params out_params; 2075 struct qed_chain_init_params params = { 2076 .mode = QED_CHAIN_MODE_PBL, 2077 .cnt_type = QED_CHAIN_CNT_TYPE_U32, 2078 }; 2079 int rc; 2080 2081 in_params->sq_num_pages = QED_CHAIN_PAGE_CNT(n_sq_elems, 2082 QEDR_SQE_ELEMENT_SIZE, 2083 QED_CHAIN_PAGE_SIZE, 2084 QED_CHAIN_MODE_PBL); 2085 in_params->rq_num_pages = QED_CHAIN_PAGE_CNT(n_rq_elems, 2086 QEDR_RQE_ELEMENT_SIZE, 2087 QED_CHAIN_PAGE_SIZE, 2088 QED_CHAIN_MODE_PBL); 2089 2090 qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx, 2091 in_params, &out_params); 2092 2093 if (!qp->qed_qp) 2094 return -EINVAL; 2095 2096 /* Now we allocate the chain */ 2097 2098 params.intended_use = QED_CHAIN_USE_TO_PRODUCE; 2099 params.num_elems = n_sq_elems; 2100 params.elem_size = QEDR_SQE_ELEMENT_SIZE; 2101 params.ext_pbl_virt = out_params.sq_pbl_virt; 2102 params.ext_pbl_phys = out_params.sq_pbl_phys; 2103 2104 rc = dev->ops->common->chain_alloc(dev->cdev, &qp->sq.pbl, ¶ms); 2105 if (rc) 2106 goto err; 2107 2108 params.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE; 2109 params.num_elems = n_rq_elems; 2110 params.elem_size = QEDR_RQE_ELEMENT_SIZE; 2111 params.ext_pbl_virt = out_params.rq_pbl_virt; 2112 params.ext_pbl_phys = out_params.rq_pbl_phys; 2113 2114 rc = dev->ops->common->chain_alloc(dev->cdev, &qp->rq.pbl, ¶ms); 2115 if (rc) 2116 goto err; 2117 2118 qp->qp_id = out_params.qp_id; 2119 qp->icid = out_params.icid; 2120 2121 return qedr_set_iwarp_db_info(dev, qp); 2122 2123 err: 2124 dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); 2125 2126 return rc; 2127 } 2128 2129 static void qedr_cleanup_kernel(struct qedr_dev *dev, struct qedr_qp *qp) 2130 { 2131 dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl); 2132 kfree(qp->wqe_wr_id); 2133 2134 dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl); 2135 kfree(qp->rqe_wr_id); 2136 2137 /* GSI qp is not registered to db mechanism so no need to delete */ 2138 if (qp->qp_type == IB_QPT_GSI) 2139 return; 2140 2141 qedr_db_recovery_del(dev, qp->sq.db, &qp->sq.db_data); 2142 2143 if (!qp->srq) { 2144 qedr_db_recovery_del(dev, qp->rq.db, &qp->rq.db_data); 2145 2146 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 2147 qedr_db_recovery_del(dev, qp->rq.iwarp_db2, 2148 &qp->rq.iwarp_db2_data); 2149 } 2150 } 2151 2152 static int qedr_create_kernel_qp(struct qedr_dev *dev, 2153 struct qedr_qp *qp, 2154 struct ib_pd *ibpd, 2155 struct ib_qp_init_attr *attrs) 2156 { 2157 struct qed_rdma_create_qp_in_params in_params; 2158 struct qedr_pd *pd = get_qedr_pd(ibpd); 2159 int rc = -EINVAL; 2160 u32 n_rq_elems; 2161 u32 n_sq_elems; 2162 u32 n_sq_entries; 2163 2164 memset(&in_params, 0, sizeof(in_params)); 2165 qp->create_type = QEDR_QP_CREATE_KERNEL; 2166 2167 /* A single work request may take up to QEDR_MAX_SQ_WQE_SIZE elements in 2168 * the ring. The ring should allow at least a single WR, even if the 2169 * user requested none, due to allocation issues. 2170 * We should add an extra WR since the prod and cons indices of 2171 * wqe_wr_id are managed in such a way that the WQ is considered full 2172 * when (prod+1)%max_wr==cons. We currently don't do that because we 2173 * double the number of entries due an iSER issue that pushes far more 2174 * WRs than indicated. If we decline its ib_post_send() then we get 2175 * error prints in the dmesg we'd like to avoid. 2176 */ 2177 qp->sq.max_wr = min_t(u32, attrs->cap.max_send_wr * dev->wq_multiplier, 2178 dev->attr.max_sqe); 2179 2180 qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id), 2181 GFP_KERNEL); 2182 if (!qp->wqe_wr_id) { 2183 DP_ERR(dev, "create qp: failed SQ shadow memory allocation\n"); 2184 return -ENOMEM; 2185 } 2186 2187 /* QP handle to be written in CQE */ 2188 in_params.qp_handle_lo = lower_32_bits((uintptr_t) qp); 2189 in_params.qp_handle_hi = upper_32_bits((uintptr_t) qp); 2190 2191 /* A single work request may take up to QEDR_MAX_RQ_WQE_SIZE elements in 2192 * the ring. There ring should allow at least a single WR, even if the 2193 * user requested none, due to allocation issues. 2194 */ 2195 qp->rq.max_wr = (u16) max_t(u32, attrs->cap.max_recv_wr, 1); 2196 2197 /* Allocate driver internal RQ array */ 2198 qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id), 2199 GFP_KERNEL); 2200 if (!qp->rqe_wr_id) { 2201 DP_ERR(dev, 2202 "create qp: failed RQ shadow memory allocation\n"); 2203 kfree(qp->wqe_wr_id); 2204 return -ENOMEM; 2205 } 2206 2207 qedr_init_common_qp_in_params(dev, pd, qp, attrs, true, &in_params); 2208 2209 n_sq_entries = attrs->cap.max_send_wr; 2210 n_sq_entries = min_t(u32, n_sq_entries, dev->attr.max_sqe); 2211 n_sq_entries = max_t(u32, n_sq_entries, 1); 2212 n_sq_elems = n_sq_entries * QEDR_MAX_SQE_ELEMENTS_PER_SQE; 2213 2214 n_rq_elems = qp->rq.max_wr * QEDR_MAX_RQE_ELEMENTS_PER_RQE; 2215 2216 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 2217 rc = qedr_iwarp_create_kernel_qp(dev, qp, &in_params, 2218 n_sq_elems, n_rq_elems); 2219 else 2220 rc = qedr_roce_create_kernel_qp(dev, qp, &in_params, 2221 n_sq_elems, n_rq_elems); 2222 if (rc) 2223 qedr_cleanup_kernel(dev, qp); 2224 2225 return rc; 2226 } 2227 2228 static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp, 2229 struct ib_udata *udata) 2230 { 2231 struct qedr_ucontext *ctx = 2232 rdma_udata_to_drv_context(udata, struct qedr_ucontext, 2233 ibucontext); 2234 int rc; 2235 2236 if (qp->qp_type != IB_QPT_GSI) { 2237 rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); 2238 if (rc) 2239 return rc; 2240 } 2241 2242 if (qp->create_type == QEDR_QP_CREATE_USER) 2243 qedr_cleanup_user(dev, ctx, qp); 2244 else 2245 qedr_cleanup_kernel(dev, qp); 2246 2247 return 0; 2248 } 2249 2250 int qedr_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs, 2251 struct ib_udata *udata) 2252 { 2253 struct qedr_xrcd *xrcd = NULL; 2254 struct ib_pd *ibpd = ibqp->pd; 2255 struct qedr_pd *pd = get_qedr_pd(ibpd); 2256 struct qedr_dev *dev = get_qedr_dev(ibqp->device); 2257 struct qedr_qp *qp = get_qedr_qp(ibqp); 2258 int rc = 0; 2259 2260 if (attrs->create_flags) 2261 return -EOPNOTSUPP; 2262 2263 if (attrs->qp_type == IB_QPT_XRC_TGT) 2264 xrcd = get_qedr_xrcd(attrs->xrcd); 2265 else 2266 pd = get_qedr_pd(ibpd); 2267 2268 DP_DEBUG(dev, QEDR_MSG_QP, "create qp: called from %s, pd=%p\n", 2269 udata ? "user library" : "kernel", pd); 2270 2271 rc = qedr_check_qp_attrs(ibpd, dev, attrs, udata); 2272 if (rc) 2273 return rc; 2274 2275 DP_DEBUG(dev, QEDR_MSG_QP, 2276 "create qp: called from %s, event_handler=%p, eepd=%p sq_cq=%p, sq_icid=%d, rq_cq=%p, rq_icid=%d\n", 2277 udata ? "user library" : "kernel", attrs->event_handler, pd, 2278 get_qedr_cq(attrs->send_cq), 2279 get_qedr_cq(attrs->send_cq)->icid, 2280 get_qedr_cq(attrs->recv_cq), 2281 attrs->recv_cq ? get_qedr_cq(attrs->recv_cq)->icid : 0); 2282 2283 qedr_set_common_qp_params(dev, qp, pd, attrs); 2284 2285 if (attrs->qp_type == IB_QPT_GSI) 2286 return qedr_create_gsi_qp(dev, attrs, qp); 2287 2288 if (udata || xrcd) 2289 rc = qedr_create_user_qp(dev, qp, ibpd, udata, attrs); 2290 else 2291 rc = qedr_create_kernel_qp(dev, qp, ibpd, attrs); 2292 2293 if (rc) 2294 return rc; 2295 2296 qp->ibqp.qp_num = qp->qp_id; 2297 2298 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 2299 rc = xa_insert(&dev->qps, qp->qp_id, qp, GFP_KERNEL); 2300 if (rc) 2301 goto out_free_qp_resources; 2302 } 2303 2304 return 0; 2305 2306 out_free_qp_resources: 2307 qedr_free_qp_resources(dev, qp, udata); 2308 return -EFAULT; 2309 } 2310 2311 static enum ib_qp_state qedr_get_ibqp_state(enum qed_roce_qp_state qp_state) 2312 { 2313 switch (qp_state) { 2314 case QED_ROCE_QP_STATE_RESET: 2315 return IB_QPS_RESET; 2316 case QED_ROCE_QP_STATE_INIT: 2317 return IB_QPS_INIT; 2318 case QED_ROCE_QP_STATE_RTR: 2319 return IB_QPS_RTR; 2320 case QED_ROCE_QP_STATE_RTS: 2321 return IB_QPS_RTS; 2322 case QED_ROCE_QP_STATE_SQD: 2323 return IB_QPS_SQD; 2324 case QED_ROCE_QP_STATE_ERR: 2325 return IB_QPS_ERR; 2326 case QED_ROCE_QP_STATE_SQE: 2327 return IB_QPS_SQE; 2328 } 2329 return IB_QPS_ERR; 2330 } 2331 2332 static enum qed_roce_qp_state qedr_get_state_from_ibqp( 2333 enum ib_qp_state qp_state) 2334 { 2335 switch (qp_state) { 2336 case IB_QPS_RESET: 2337 return QED_ROCE_QP_STATE_RESET; 2338 case IB_QPS_INIT: 2339 return QED_ROCE_QP_STATE_INIT; 2340 case IB_QPS_RTR: 2341 return QED_ROCE_QP_STATE_RTR; 2342 case IB_QPS_RTS: 2343 return QED_ROCE_QP_STATE_RTS; 2344 case IB_QPS_SQD: 2345 return QED_ROCE_QP_STATE_SQD; 2346 case IB_QPS_ERR: 2347 return QED_ROCE_QP_STATE_ERR; 2348 default: 2349 return QED_ROCE_QP_STATE_ERR; 2350 } 2351 } 2352 2353 static int qedr_update_qp_state(struct qedr_dev *dev, 2354 struct qedr_qp *qp, 2355 enum qed_roce_qp_state cur_state, 2356 enum qed_roce_qp_state new_state) 2357 { 2358 int status = 0; 2359 2360 if (new_state == cur_state) 2361 return 0; 2362 2363 switch (cur_state) { 2364 case QED_ROCE_QP_STATE_RESET: 2365 switch (new_state) { 2366 case QED_ROCE_QP_STATE_INIT: 2367 break; 2368 default: 2369 status = -EINVAL; 2370 break; 2371 } 2372 break; 2373 case QED_ROCE_QP_STATE_INIT: 2374 switch (new_state) { 2375 case QED_ROCE_QP_STATE_RTR: 2376 /* Update doorbell (in case post_recv was 2377 * done before move to RTR) 2378 */ 2379 2380 if (rdma_protocol_roce(&dev->ibdev, 1)) { 2381 writel(qp->rq.db_data.raw, qp->rq.db); 2382 } 2383 break; 2384 case QED_ROCE_QP_STATE_ERR: 2385 break; 2386 default: 2387 /* Invalid state change. */ 2388 status = -EINVAL; 2389 break; 2390 } 2391 break; 2392 case QED_ROCE_QP_STATE_RTR: 2393 /* RTR->XXX */ 2394 switch (new_state) { 2395 case QED_ROCE_QP_STATE_RTS: 2396 break; 2397 case QED_ROCE_QP_STATE_ERR: 2398 break; 2399 default: 2400 /* Invalid state change. */ 2401 status = -EINVAL; 2402 break; 2403 } 2404 break; 2405 case QED_ROCE_QP_STATE_RTS: 2406 /* RTS->XXX */ 2407 switch (new_state) { 2408 case QED_ROCE_QP_STATE_SQD: 2409 break; 2410 case QED_ROCE_QP_STATE_ERR: 2411 break; 2412 default: 2413 /* Invalid state change. */ 2414 status = -EINVAL; 2415 break; 2416 } 2417 break; 2418 case QED_ROCE_QP_STATE_SQD: 2419 /* SQD->XXX */ 2420 switch (new_state) { 2421 case QED_ROCE_QP_STATE_RTS: 2422 case QED_ROCE_QP_STATE_ERR: 2423 break; 2424 default: 2425 /* Invalid state change. */ 2426 status = -EINVAL; 2427 break; 2428 } 2429 break; 2430 case QED_ROCE_QP_STATE_ERR: 2431 /* ERR->XXX */ 2432 switch (new_state) { 2433 case QED_ROCE_QP_STATE_RESET: 2434 if ((qp->rq.prod != qp->rq.cons) || 2435 (qp->sq.prod != qp->sq.cons)) { 2436 DP_NOTICE(dev, 2437 "Error->Reset with rq/sq not empty rq.prod=%x rq.cons=%x sq.prod=%x sq.cons=%x\n", 2438 qp->rq.prod, qp->rq.cons, qp->sq.prod, 2439 qp->sq.cons); 2440 status = -EINVAL; 2441 } 2442 break; 2443 default: 2444 status = -EINVAL; 2445 break; 2446 } 2447 break; 2448 default: 2449 status = -EINVAL; 2450 break; 2451 } 2452 2453 return status; 2454 } 2455 2456 int qedr_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 2457 int attr_mask, struct ib_udata *udata) 2458 { 2459 struct qedr_qp *qp = get_qedr_qp(ibqp); 2460 struct qed_rdma_modify_qp_in_params qp_params = { 0 }; 2461 struct qedr_dev *dev = get_qedr_dev(&qp->dev->ibdev); 2462 const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr); 2463 enum ib_qp_state old_qp_state, new_qp_state; 2464 enum qed_roce_qp_state cur_state; 2465 int rc = 0; 2466 2467 DP_DEBUG(dev, QEDR_MSG_QP, 2468 "modify qp: qp %p attr_mask=0x%x, state=%d", qp, attr_mask, 2469 attr->qp_state); 2470 2471 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS) 2472 return -EOPNOTSUPP; 2473 2474 old_qp_state = qedr_get_ibqp_state(qp->state); 2475 if (attr_mask & IB_QP_STATE) 2476 new_qp_state = attr->qp_state; 2477 else 2478 new_qp_state = old_qp_state; 2479 2480 if (rdma_protocol_roce(&dev->ibdev, 1)) { 2481 if (!ib_modify_qp_is_ok(old_qp_state, new_qp_state, 2482 ibqp->qp_type, attr_mask)) { 2483 DP_ERR(dev, 2484 "modify qp: invalid attribute mask=0x%x specified for\n" 2485 "qpn=0x%x of type=0x%x old_qp_state=0x%x, new_qp_state=0x%x\n", 2486 attr_mask, qp->qp_id, ibqp->qp_type, 2487 old_qp_state, new_qp_state); 2488 rc = -EINVAL; 2489 goto err; 2490 } 2491 } 2492 2493 /* Translate the masks... */ 2494 if (attr_mask & IB_QP_STATE) { 2495 SET_FIELD(qp_params.modify_flags, 2496 QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1); 2497 qp_params.new_state = qedr_get_state_from_ibqp(attr->qp_state); 2498 } 2499 2500 if (attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) 2501 qp_params.sqd_async = true; 2502 2503 if (attr_mask & IB_QP_PKEY_INDEX) { 2504 SET_FIELD(qp_params.modify_flags, 2505 QED_ROCE_MODIFY_QP_VALID_PKEY, 1); 2506 if (attr->pkey_index >= QEDR_ROCE_PKEY_TABLE_LEN) { 2507 rc = -EINVAL; 2508 goto err; 2509 } 2510 2511 qp_params.pkey = QEDR_ROCE_PKEY_DEFAULT; 2512 } 2513 2514 if (attr_mask & IB_QP_QKEY) 2515 qp->qkey = attr->qkey; 2516 2517 if (attr_mask & IB_QP_ACCESS_FLAGS) { 2518 SET_FIELD(qp_params.modify_flags, 2519 QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN, 1); 2520 qp_params.incoming_rdma_read_en = attr->qp_access_flags & 2521 IB_ACCESS_REMOTE_READ; 2522 qp_params.incoming_rdma_write_en = attr->qp_access_flags & 2523 IB_ACCESS_REMOTE_WRITE; 2524 qp_params.incoming_atomic_en = attr->qp_access_flags & 2525 IB_ACCESS_REMOTE_ATOMIC; 2526 } 2527 2528 if (attr_mask & (IB_QP_AV | IB_QP_PATH_MTU)) { 2529 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 2530 return -EINVAL; 2531 2532 if (attr_mask & IB_QP_PATH_MTU) { 2533 if (attr->path_mtu < IB_MTU_256 || 2534 attr->path_mtu > IB_MTU_4096) { 2535 pr_err("error: Only MTU sizes of 256, 512, 1024, 2048 and 4096 are supported by RoCE\n"); 2536 rc = -EINVAL; 2537 goto err; 2538 } 2539 qp->mtu = min(ib_mtu_enum_to_int(attr->path_mtu), 2540 ib_mtu_enum_to_int(iboe_get_mtu 2541 (dev->ndev->mtu))); 2542 } 2543 2544 if (!qp->mtu) { 2545 qp->mtu = 2546 ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu)); 2547 pr_err("Fixing zeroed MTU to qp->mtu = %d\n", qp->mtu); 2548 } 2549 2550 SET_FIELD(qp_params.modify_flags, 2551 QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR, 1); 2552 2553 qp_params.traffic_class_tos = grh->traffic_class; 2554 qp_params.flow_label = grh->flow_label; 2555 qp_params.hop_limit_ttl = grh->hop_limit; 2556 2557 qp->sgid_idx = grh->sgid_index; 2558 2559 rc = get_gid_info_from_table(ibqp, attr, attr_mask, &qp_params); 2560 if (rc) { 2561 DP_ERR(dev, 2562 "modify qp: problems with GID index %d (rc=%d)\n", 2563 grh->sgid_index, rc); 2564 return rc; 2565 } 2566 2567 rc = qedr_get_dmac(dev, &attr->ah_attr, 2568 qp_params.remote_mac_addr); 2569 if (rc) 2570 return rc; 2571 2572 qp_params.use_local_mac = true; 2573 ether_addr_copy(qp_params.local_mac_addr, dev->ndev->dev_addr); 2574 2575 DP_DEBUG(dev, QEDR_MSG_QP, "dgid=%x:%x:%x:%x\n", 2576 qp_params.dgid.dwords[0], qp_params.dgid.dwords[1], 2577 qp_params.dgid.dwords[2], qp_params.dgid.dwords[3]); 2578 DP_DEBUG(dev, QEDR_MSG_QP, "sgid=%x:%x:%x:%x\n", 2579 qp_params.sgid.dwords[0], qp_params.sgid.dwords[1], 2580 qp_params.sgid.dwords[2], qp_params.sgid.dwords[3]); 2581 DP_DEBUG(dev, QEDR_MSG_QP, "remote_mac=[%pM]\n", 2582 qp_params.remote_mac_addr); 2583 2584 qp_params.mtu = qp->mtu; 2585 qp_params.lb_indication = false; 2586 } 2587 2588 if (!qp_params.mtu) { 2589 /* Stay with current MTU */ 2590 if (qp->mtu) 2591 qp_params.mtu = qp->mtu; 2592 else 2593 qp_params.mtu = 2594 ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu)); 2595 } 2596 2597 if (attr_mask & IB_QP_TIMEOUT) { 2598 SET_FIELD(qp_params.modify_flags, 2599 QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT, 1); 2600 2601 /* The received timeout value is an exponent used like this: 2602 * "12.7.34 LOCAL ACK TIMEOUT 2603 * Value representing the transport (ACK) timeout for use by 2604 * the remote, expressed as: 4.096 * 2^timeout [usec]" 2605 * The FW expects timeout in msec so we need to divide the usec 2606 * result by 1000. We'll approximate 1000~2^10, and 4.096 ~ 2^2, 2607 * so we get: 2^2 * 2^timeout / 2^10 = 2^(timeout - 8). 2608 * The value of zero means infinite so we use a 'max_t' to make 2609 * sure that sub 1 msec values will be configured as 1 msec. 2610 */ 2611 if (attr->timeout) 2612 qp_params.ack_timeout = 2613 1 << max_t(int, attr->timeout - 8, 0); 2614 else 2615 qp_params.ack_timeout = 0; 2616 } 2617 2618 if (attr_mask & IB_QP_RETRY_CNT) { 2619 SET_FIELD(qp_params.modify_flags, 2620 QED_ROCE_MODIFY_QP_VALID_RETRY_CNT, 1); 2621 qp_params.retry_cnt = attr->retry_cnt; 2622 } 2623 2624 if (attr_mask & IB_QP_RNR_RETRY) { 2625 SET_FIELD(qp_params.modify_flags, 2626 QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT, 1); 2627 qp_params.rnr_retry_cnt = attr->rnr_retry; 2628 } 2629 2630 if (attr_mask & IB_QP_RQ_PSN) { 2631 SET_FIELD(qp_params.modify_flags, 2632 QED_ROCE_MODIFY_QP_VALID_RQ_PSN, 1); 2633 qp_params.rq_psn = attr->rq_psn; 2634 qp->rq_psn = attr->rq_psn; 2635 } 2636 2637 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 2638 if (attr->max_rd_atomic > dev->attr.max_qp_req_rd_atomic_resc) { 2639 rc = -EINVAL; 2640 DP_ERR(dev, 2641 "unsupported max_rd_atomic=%d, supported=%d\n", 2642 attr->max_rd_atomic, 2643 dev->attr.max_qp_req_rd_atomic_resc); 2644 goto err; 2645 } 2646 2647 SET_FIELD(qp_params.modify_flags, 2648 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ, 1); 2649 qp_params.max_rd_atomic_req = attr->max_rd_atomic; 2650 } 2651 2652 if (attr_mask & IB_QP_MIN_RNR_TIMER) { 2653 SET_FIELD(qp_params.modify_flags, 2654 QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER, 1); 2655 qp_params.min_rnr_nak_timer = attr->min_rnr_timer; 2656 } 2657 2658 if (attr_mask & IB_QP_SQ_PSN) { 2659 SET_FIELD(qp_params.modify_flags, 2660 QED_ROCE_MODIFY_QP_VALID_SQ_PSN, 1); 2661 qp_params.sq_psn = attr->sq_psn; 2662 qp->sq_psn = attr->sq_psn; 2663 } 2664 2665 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 2666 if (attr->max_dest_rd_atomic > 2667 dev->attr.max_qp_resp_rd_atomic_resc) { 2668 DP_ERR(dev, 2669 "unsupported max_dest_rd_atomic=%d, supported=%d\n", 2670 attr->max_dest_rd_atomic, 2671 dev->attr.max_qp_resp_rd_atomic_resc); 2672 2673 rc = -EINVAL; 2674 goto err; 2675 } 2676 2677 SET_FIELD(qp_params.modify_flags, 2678 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP, 1); 2679 qp_params.max_rd_atomic_resp = attr->max_dest_rd_atomic; 2680 } 2681 2682 if (attr_mask & IB_QP_DEST_QPN) { 2683 SET_FIELD(qp_params.modify_flags, 2684 QED_ROCE_MODIFY_QP_VALID_DEST_QP, 1); 2685 2686 qp_params.dest_qp = attr->dest_qp_num; 2687 qp->dest_qp_num = attr->dest_qp_num; 2688 } 2689 2690 cur_state = qp->state; 2691 2692 /* Update the QP state before the actual ramrod to prevent a race with 2693 * fast path. Modifying the QP state to error will cause the device to 2694 * flush the CQEs and while polling the flushed CQEs will considered as 2695 * a potential issue if the QP isn't in error state. 2696 */ 2697 if ((attr_mask & IB_QP_STATE) && qp->qp_type != IB_QPT_GSI && 2698 !udata && qp_params.new_state == QED_ROCE_QP_STATE_ERR) 2699 qp->state = QED_ROCE_QP_STATE_ERR; 2700 2701 if (qp->qp_type != IB_QPT_GSI) 2702 rc = dev->ops->rdma_modify_qp(dev->rdma_ctx, 2703 qp->qed_qp, &qp_params); 2704 2705 if (attr_mask & IB_QP_STATE) { 2706 if ((qp->qp_type != IB_QPT_GSI) && (!udata)) 2707 rc = qedr_update_qp_state(dev, qp, cur_state, 2708 qp_params.new_state); 2709 qp->state = qp_params.new_state; 2710 } 2711 2712 err: 2713 return rc; 2714 } 2715 2716 static int qedr_to_ib_qp_acc_flags(struct qed_rdma_query_qp_out_params *params) 2717 { 2718 int ib_qp_acc_flags = 0; 2719 2720 if (params->incoming_rdma_write_en) 2721 ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE; 2722 if (params->incoming_rdma_read_en) 2723 ib_qp_acc_flags |= IB_ACCESS_REMOTE_READ; 2724 if (params->incoming_atomic_en) 2725 ib_qp_acc_flags |= IB_ACCESS_REMOTE_ATOMIC; 2726 ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE; 2727 return ib_qp_acc_flags; 2728 } 2729 2730 int qedr_query_qp(struct ib_qp *ibqp, 2731 struct ib_qp_attr *qp_attr, 2732 int attr_mask, struct ib_qp_init_attr *qp_init_attr) 2733 { 2734 struct qed_rdma_query_qp_out_params params; 2735 struct qedr_qp *qp = get_qedr_qp(ibqp); 2736 struct qedr_dev *dev = qp->dev; 2737 int rc = 0; 2738 2739 memset(¶ms, 0, sizeof(params)); 2740 memset(qp_attr, 0, sizeof(*qp_attr)); 2741 memset(qp_init_attr, 0, sizeof(*qp_init_attr)); 2742 2743 if (qp->qp_type != IB_QPT_GSI) { 2744 rc = dev->ops->rdma_query_qp(dev->rdma_ctx, qp->qed_qp, ¶ms); 2745 if (rc) 2746 goto err; 2747 qp_attr->qp_state = qedr_get_ibqp_state(params.state); 2748 } else { 2749 qp_attr->qp_state = qedr_get_ibqp_state(QED_ROCE_QP_STATE_RTS); 2750 } 2751 2752 qp_attr->cur_qp_state = qedr_get_ibqp_state(params.state); 2753 qp_attr->path_mtu = ib_mtu_int_to_enum(params.mtu); 2754 qp_attr->path_mig_state = IB_MIG_MIGRATED; 2755 qp_attr->rq_psn = params.rq_psn; 2756 qp_attr->sq_psn = params.sq_psn; 2757 qp_attr->dest_qp_num = params.dest_qp; 2758 2759 qp_attr->qp_access_flags = qedr_to_ib_qp_acc_flags(¶ms); 2760 2761 qp_attr->cap.max_send_wr = qp->sq.max_wr; 2762 qp_attr->cap.max_recv_wr = qp->rq.max_wr; 2763 qp_attr->cap.max_send_sge = qp->sq.max_sges; 2764 qp_attr->cap.max_recv_sge = qp->rq.max_sges; 2765 qp_attr->cap.max_inline_data = dev->attr.max_inline; 2766 qp_init_attr->cap = qp_attr->cap; 2767 2768 qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE; 2769 rdma_ah_set_grh(&qp_attr->ah_attr, NULL, 2770 params.flow_label, qp->sgid_idx, 2771 params.hop_limit_ttl, params.traffic_class_tos); 2772 rdma_ah_set_dgid_raw(&qp_attr->ah_attr, ¶ms.dgid.bytes[0]); 2773 rdma_ah_set_port_num(&qp_attr->ah_attr, 1); 2774 rdma_ah_set_sl(&qp_attr->ah_attr, 0); 2775 qp_attr->timeout = params.timeout; 2776 qp_attr->rnr_retry = params.rnr_retry; 2777 qp_attr->retry_cnt = params.retry_cnt; 2778 qp_attr->min_rnr_timer = params.min_rnr_nak_timer; 2779 qp_attr->pkey_index = params.pkey_index; 2780 qp_attr->port_num = 1; 2781 rdma_ah_set_path_bits(&qp_attr->ah_attr, 0); 2782 rdma_ah_set_static_rate(&qp_attr->ah_attr, 0); 2783 qp_attr->alt_pkey_index = 0; 2784 qp_attr->alt_port_num = 0; 2785 qp_attr->alt_timeout = 0; 2786 memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr)); 2787 2788 qp_attr->sq_draining = (params.state == QED_ROCE_QP_STATE_SQD) ? 1 : 0; 2789 qp_attr->max_dest_rd_atomic = params.max_dest_rd_atomic; 2790 qp_attr->max_rd_atomic = params.max_rd_atomic; 2791 qp_attr->en_sqd_async_notify = (params.sqd_async) ? 1 : 0; 2792 2793 DP_DEBUG(dev, QEDR_MSG_QP, "QEDR_QUERY_QP: max_inline_data=%d\n", 2794 qp_attr->cap.max_inline_data); 2795 2796 err: 2797 return rc; 2798 } 2799 2800 int qedr_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) 2801 { 2802 struct qedr_qp *qp = get_qedr_qp(ibqp); 2803 struct qedr_dev *dev = qp->dev; 2804 struct ib_qp_attr attr; 2805 int attr_mask = 0; 2806 2807 DP_DEBUG(dev, QEDR_MSG_QP, "destroy qp: destroying %p, qp type=%d\n", 2808 qp, qp->qp_type); 2809 2810 if (rdma_protocol_roce(&dev->ibdev, 1)) { 2811 if ((qp->state != QED_ROCE_QP_STATE_RESET) && 2812 (qp->state != QED_ROCE_QP_STATE_ERR) && 2813 (qp->state != QED_ROCE_QP_STATE_INIT)) { 2814 2815 attr.qp_state = IB_QPS_ERR; 2816 attr_mask |= IB_QP_STATE; 2817 2818 /* Change the QP state to ERROR */ 2819 qedr_modify_qp(ibqp, &attr, attr_mask, NULL); 2820 } 2821 } else { 2822 /* If connection establishment started the WAIT_FOR_CONNECT 2823 * bit will be on and we need to Wait for the establishment 2824 * to complete before destroying the qp. 2825 */ 2826 if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_CONNECT, 2827 &qp->iwarp_cm_flags)) 2828 wait_for_completion(&qp->iwarp_cm_comp); 2829 2830 /* If graceful disconnect started, the WAIT_FOR_DISCONNECT 2831 * bit will be on, and we need to wait for the disconnect to 2832 * complete before continuing. We can use the same completion, 2833 * iwarp_cm_comp, since this is the only place that waits for 2834 * this completion and it is sequential. In addition, 2835 * disconnect can't occur before the connection is fully 2836 * established, therefore if WAIT_FOR_DISCONNECT is on it 2837 * means WAIT_FOR_CONNECT is also on and the completion for 2838 * CONNECT already occurred. 2839 */ 2840 if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_DISCONNECT, 2841 &qp->iwarp_cm_flags)) 2842 wait_for_completion(&qp->iwarp_cm_comp); 2843 } 2844 2845 if (qp->qp_type == IB_QPT_GSI) 2846 qedr_destroy_gsi_qp(dev); 2847 2848 /* We need to remove the entry from the xarray before we release the 2849 * qp_id to avoid a race of the qp_id being reallocated and failing 2850 * on xa_insert 2851 */ 2852 if (rdma_protocol_iwarp(&dev->ibdev, 1)) 2853 xa_erase(&dev->qps, qp->qp_id); 2854 2855 qedr_free_qp_resources(dev, qp, udata); 2856 2857 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 2858 qedr_iw_qp_rem_ref(&qp->ibqp); 2859 wait_for_completion(&qp->qp_rel_comp); 2860 } 2861 2862 return 0; 2863 } 2864 2865 int qedr_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, 2866 struct ib_udata *udata) 2867 { 2868 struct qedr_ah *ah = get_qedr_ah(ibah); 2869 2870 rdma_copy_ah_attr(&ah->attr, init_attr->ah_attr); 2871 2872 return 0; 2873 } 2874 2875 int qedr_destroy_ah(struct ib_ah *ibah, u32 flags) 2876 { 2877 struct qedr_ah *ah = get_qedr_ah(ibah); 2878 2879 rdma_destroy_ah_attr(&ah->attr); 2880 return 0; 2881 } 2882 2883 static void free_mr_info(struct qedr_dev *dev, struct mr_info *info) 2884 { 2885 struct qedr_pbl *pbl, *tmp; 2886 2887 if (info->pbl_table) 2888 list_add_tail(&info->pbl_table->list_entry, 2889 &info->free_pbl_list); 2890 2891 if (!list_empty(&info->inuse_pbl_list)) 2892 list_splice(&info->inuse_pbl_list, &info->free_pbl_list); 2893 2894 list_for_each_entry_safe(pbl, tmp, &info->free_pbl_list, list_entry) { 2895 list_del(&pbl->list_entry); 2896 qedr_free_pbl(dev, &info->pbl_info, pbl); 2897 } 2898 } 2899 2900 static int init_mr_info(struct qedr_dev *dev, struct mr_info *info, 2901 size_t page_list_len, bool two_layered) 2902 { 2903 struct qedr_pbl *tmp; 2904 int rc; 2905 2906 INIT_LIST_HEAD(&info->free_pbl_list); 2907 INIT_LIST_HEAD(&info->inuse_pbl_list); 2908 2909 rc = qedr_prepare_pbl_tbl(dev, &info->pbl_info, 2910 page_list_len, two_layered); 2911 if (rc) 2912 goto done; 2913 2914 info->pbl_table = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL); 2915 if (IS_ERR(info->pbl_table)) { 2916 rc = PTR_ERR(info->pbl_table); 2917 goto done; 2918 } 2919 2920 DP_DEBUG(dev, QEDR_MSG_MR, "pbl_table_pa = %pa\n", 2921 &info->pbl_table->pa); 2922 2923 /* in usual case we use 2 PBLs, so we add one to free 2924 * list and allocating another one 2925 */ 2926 tmp = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL); 2927 if (IS_ERR(tmp)) { 2928 DP_DEBUG(dev, QEDR_MSG_MR, "Extra PBL is not allocated\n"); 2929 goto done; 2930 } 2931 2932 list_add_tail(&tmp->list_entry, &info->free_pbl_list); 2933 2934 DP_DEBUG(dev, QEDR_MSG_MR, "extra pbl_table_pa = %pa\n", &tmp->pa); 2935 2936 done: 2937 if (rc) 2938 free_mr_info(dev, info); 2939 2940 return rc; 2941 } 2942 2943 struct ib_mr *qedr_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len, 2944 u64 usr_addr, int acc, struct ib_udata *udata) 2945 { 2946 struct qedr_dev *dev = get_qedr_dev(ibpd->device); 2947 struct qedr_mr *mr; 2948 struct qedr_pd *pd; 2949 int rc = -ENOMEM; 2950 2951 pd = get_qedr_pd(ibpd); 2952 DP_DEBUG(dev, QEDR_MSG_MR, 2953 "qedr_register user mr pd = %d start = %lld, len = %lld, usr_addr = %lld, acc = %d\n", 2954 pd->pd_id, start, len, usr_addr, acc); 2955 2956 if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) 2957 return ERR_PTR(-EINVAL); 2958 2959 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 2960 if (!mr) 2961 return ERR_PTR(rc); 2962 2963 mr->type = QEDR_MR_USER; 2964 2965 mr->umem = ib_umem_get(ibpd->device, start, len, acc); 2966 if (IS_ERR(mr->umem)) { 2967 rc = -EFAULT; 2968 goto err0; 2969 } 2970 2971 rc = init_mr_info(dev, &mr->info, 2972 ib_umem_num_dma_blocks(mr->umem, PAGE_SIZE), 1); 2973 if (rc) 2974 goto err1; 2975 2976 qedr_populate_pbls(dev, mr->umem, mr->info.pbl_table, 2977 &mr->info.pbl_info, PAGE_SHIFT); 2978 2979 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid); 2980 if (rc) { 2981 if (rc == -EINVAL) 2982 DP_ERR(dev, "Out of MR resources\n"); 2983 else 2984 DP_ERR(dev, "roce alloc tid returned error %d\n", rc); 2985 2986 goto err1; 2987 } 2988 2989 /* Index only, 18 bit long, lkey = itid << 8 | key */ 2990 mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR; 2991 mr->hw_mr.key = 0; 2992 mr->hw_mr.pd = pd->pd_id; 2993 mr->hw_mr.local_read = 1; 2994 mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; 2995 mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; 2996 mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; 2997 mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; 2998 mr->hw_mr.mw_bind = false; 2999 mr->hw_mr.pbl_ptr = mr->info.pbl_table[0].pa; 3000 mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered; 3001 mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size); 3002 mr->hw_mr.page_size_log = PAGE_SHIFT; 3003 mr->hw_mr.length = len; 3004 mr->hw_mr.vaddr = usr_addr; 3005 mr->hw_mr.phy_mr = false; 3006 mr->hw_mr.dma_mr = false; 3007 3008 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr); 3009 if (rc) { 3010 DP_ERR(dev, "roce register tid returned an error %d\n", rc); 3011 goto err2; 3012 } 3013 3014 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; 3015 if (mr->hw_mr.remote_write || mr->hw_mr.remote_read || 3016 mr->hw_mr.remote_atomic) 3017 mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; 3018 3019 DP_DEBUG(dev, QEDR_MSG_MR, "register user mr lkey: %x\n", 3020 mr->ibmr.lkey); 3021 return &mr->ibmr; 3022 3023 err2: 3024 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid); 3025 err1: 3026 qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table); 3027 err0: 3028 kfree(mr); 3029 return ERR_PTR(rc); 3030 } 3031 3032 int qedr_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) 3033 { 3034 struct qedr_mr *mr = get_qedr_mr(ib_mr); 3035 struct qedr_dev *dev = get_qedr_dev(ib_mr->device); 3036 int rc = 0; 3037 3038 rc = dev->ops->rdma_deregister_tid(dev->rdma_ctx, mr->hw_mr.itid); 3039 if (rc) 3040 return rc; 3041 3042 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid); 3043 3044 if (mr->type != QEDR_MR_DMA) 3045 free_mr_info(dev, &mr->info); 3046 3047 /* it could be user registered memory. */ 3048 ib_umem_release(mr->umem); 3049 3050 kfree(mr); 3051 3052 return rc; 3053 } 3054 3055 static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd, 3056 int max_page_list_len) 3057 { 3058 struct qedr_pd *pd = get_qedr_pd(ibpd); 3059 struct qedr_dev *dev = get_qedr_dev(ibpd->device); 3060 struct qedr_mr *mr; 3061 int rc = -ENOMEM; 3062 3063 DP_DEBUG(dev, QEDR_MSG_MR, 3064 "qedr_alloc_frmr pd = %d max_page_list_len= %d\n", pd->pd_id, 3065 max_page_list_len); 3066 3067 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 3068 if (!mr) 3069 return ERR_PTR(rc); 3070 3071 mr->dev = dev; 3072 mr->type = QEDR_MR_FRMR; 3073 3074 rc = init_mr_info(dev, &mr->info, max_page_list_len, 1); 3075 if (rc) 3076 goto err0; 3077 3078 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid); 3079 if (rc) { 3080 if (rc == -EINVAL) 3081 DP_ERR(dev, "Out of MR resources\n"); 3082 else 3083 DP_ERR(dev, "roce alloc tid returned error %d\n", rc); 3084 3085 goto err1; 3086 } 3087 3088 /* Index only, 18 bit long, lkey = itid << 8 | key */ 3089 mr->hw_mr.tid_type = QED_RDMA_TID_FMR; 3090 mr->hw_mr.key = 0; 3091 mr->hw_mr.pd = pd->pd_id; 3092 mr->hw_mr.local_read = 1; 3093 mr->hw_mr.local_write = 0; 3094 mr->hw_mr.remote_read = 0; 3095 mr->hw_mr.remote_write = 0; 3096 mr->hw_mr.remote_atomic = 0; 3097 mr->hw_mr.mw_bind = false; 3098 mr->hw_mr.pbl_ptr = 0; 3099 mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered; 3100 mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size); 3101 mr->hw_mr.length = 0; 3102 mr->hw_mr.vaddr = 0; 3103 mr->hw_mr.phy_mr = true; 3104 mr->hw_mr.dma_mr = false; 3105 3106 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr); 3107 if (rc) { 3108 DP_ERR(dev, "roce register tid returned an error %d\n", rc); 3109 goto err2; 3110 } 3111 3112 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; 3113 mr->ibmr.rkey = mr->ibmr.lkey; 3114 3115 DP_DEBUG(dev, QEDR_MSG_MR, "alloc frmr: %x\n", mr->ibmr.lkey); 3116 return mr; 3117 3118 err2: 3119 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid); 3120 err1: 3121 qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table); 3122 err0: 3123 kfree(mr); 3124 return ERR_PTR(rc); 3125 } 3126 3127 struct ib_mr *qedr_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type, 3128 u32 max_num_sg) 3129 { 3130 struct qedr_mr *mr; 3131 3132 if (mr_type != IB_MR_TYPE_MEM_REG) 3133 return ERR_PTR(-EINVAL); 3134 3135 mr = __qedr_alloc_mr(ibpd, max_num_sg); 3136 3137 if (IS_ERR(mr)) 3138 return ERR_PTR(-EINVAL); 3139 3140 return &mr->ibmr; 3141 } 3142 3143 static int qedr_set_page(struct ib_mr *ibmr, u64 addr) 3144 { 3145 struct qedr_mr *mr = get_qedr_mr(ibmr); 3146 struct qedr_pbl *pbl_table; 3147 struct regpair *pbe; 3148 u32 pbes_in_page; 3149 3150 if (unlikely(mr->npages == mr->info.pbl_info.num_pbes)) { 3151 DP_ERR(mr->dev, "qedr_set_page fails when %d\n", mr->npages); 3152 return -ENOMEM; 3153 } 3154 3155 DP_DEBUG(mr->dev, QEDR_MSG_MR, "qedr_set_page pages[%d] = 0x%llx\n", 3156 mr->npages, addr); 3157 3158 pbes_in_page = mr->info.pbl_info.pbl_size / sizeof(u64); 3159 pbl_table = mr->info.pbl_table + (mr->npages / pbes_in_page); 3160 pbe = (struct regpair *)pbl_table->va; 3161 pbe += mr->npages % pbes_in_page; 3162 pbe->lo = cpu_to_le32((u32)addr); 3163 pbe->hi = cpu_to_le32((u32)upper_32_bits(addr)); 3164 3165 mr->npages++; 3166 3167 return 0; 3168 } 3169 3170 static void handle_completed_mrs(struct qedr_dev *dev, struct mr_info *info) 3171 { 3172 int work = info->completed - info->completed_handled - 1; 3173 3174 DP_DEBUG(dev, QEDR_MSG_MR, "Special FMR work = %d\n", work); 3175 while (work-- > 0 && !list_empty(&info->inuse_pbl_list)) { 3176 struct qedr_pbl *pbl; 3177 3178 /* Free all the page list that are possible to be freed 3179 * (all the ones that were invalidated), under the assumption 3180 * that if an FMR was completed successfully that means that 3181 * if there was an invalidate operation before it also ended 3182 */ 3183 pbl = list_first_entry(&info->inuse_pbl_list, 3184 struct qedr_pbl, list_entry); 3185 list_move_tail(&pbl->list_entry, &info->free_pbl_list); 3186 info->completed_handled++; 3187 } 3188 } 3189 3190 int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, 3191 int sg_nents, unsigned int *sg_offset) 3192 { 3193 struct qedr_mr *mr = get_qedr_mr(ibmr); 3194 3195 mr->npages = 0; 3196 3197 handle_completed_mrs(mr->dev, &mr->info); 3198 return ib_sg_to_pages(ibmr, sg, sg_nents, NULL, qedr_set_page); 3199 } 3200 3201 struct ib_mr *qedr_get_dma_mr(struct ib_pd *ibpd, int acc) 3202 { 3203 struct qedr_dev *dev = get_qedr_dev(ibpd->device); 3204 struct qedr_pd *pd = get_qedr_pd(ibpd); 3205 struct qedr_mr *mr; 3206 int rc; 3207 3208 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 3209 if (!mr) 3210 return ERR_PTR(-ENOMEM); 3211 3212 mr->type = QEDR_MR_DMA; 3213 3214 rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid); 3215 if (rc) { 3216 if (rc == -EINVAL) 3217 DP_ERR(dev, "Out of MR resources\n"); 3218 else 3219 DP_ERR(dev, "roce alloc tid returned error %d\n", rc); 3220 3221 goto err1; 3222 } 3223 3224 /* index only, 18 bit long, lkey = itid << 8 | key */ 3225 mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR; 3226 mr->hw_mr.pd = pd->pd_id; 3227 mr->hw_mr.local_read = 1; 3228 mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; 3229 mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; 3230 mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; 3231 mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; 3232 mr->hw_mr.dma_mr = true; 3233 3234 rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr); 3235 if (rc) { 3236 DP_ERR(dev, "roce register tid returned an error %d\n", rc); 3237 goto err2; 3238 } 3239 3240 mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; 3241 if (mr->hw_mr.remote_write || mr->hw_mr.remote_read || 3242 mr->hw_mr.remote_atomic) 3243 mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; 3244 3245 DP_DEBUG(dev, QEDR_MSG_MR, "get dma mr: lkey = %x\n", mr->ibmr.lkey); 3246 return &mr->ibmr; 3247 3248 err2: 3249 dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid); 3250 err1: 3251 kfree(mr); 3252 return ERR_PTR(rc); 3253 } 3254 3255 static inline int qedr_wq_is_full(struct qedr_qp_hwq_info *wq) 3256 { 3257 return (((wq->prod + 1) % wq->max_wr) == wq->cons); 3258 } 3259 3260 static int sge_data_len(struct ib_sge *sg_list, int num_sge) 3261 { 3262 int i, len = 0; 3263 3264 for (i = 0; i < num_sge; i++) 3265 len += sg_list[i].length; 3266 3267 return len; 3268 } 3269 3270 static void swap_wqe_data64(u64 *p) 3271 { 3272 int i; 3273 3274 for (i = 0; i < QEDR_SQE_ELEMENT_SIZE / sizeof(u64); i++, p++) 3275 *p = cpu_to_be64(cpu_to_le64(*p)); 3276 } 3277 3278 static u32 qedr_prepare_sq_inline_data(struct qedr_dev *dev, 3279 struct qedr_qp *qp, u8 *wqe_size, 3280 const struct ib_send_wr *wr, 3281 const struct ib_send_wr **bad_wr, 3282 u8 *bits, u8 bit) 3283 { 3284 u32 data_size = sge_data_len(wr->sg_list, wr->num_sge); 3285 char *seg_prt, *wqe; 3286 int i, seg_siz; 3287 3288 if (data_size > ROCE_REQ_MAX_INLINE_DATA_SIZE) { 3289 DP_ERR(dev, "Too much inline data in WR: %d\n", data_size); 3290 *bad_wr = wr; 3291 return 0; 3292 } 3293 3294 if (!data_size) 3295 return data_size; 3296 3297 *bits |= bit; 3298 3299 seg_prt = NULL; 3300 wqe = NULL; 3301 seg_siz = 0; 3302 3303 /* Copy data inline */ 3304 for (i = 0; i < wr->num_sge; i++) { 3305 u32 len = wr->sg_list[i].length; 3306 void *src = (void *)(uintptr_t)wr->sg_list[i].addr; 3307 3308 while (len > 0) { 3309 u32 cur; 3310 3311 /* New segment required */ 3312 if (!seg_siz) { 3313 wqe = (char *)qed_chain_produce(&qp->sq.pbl); 3314 seg_prt = wqe; 3315 seg_siz = sizeof(struct rdma_sq_common_wqe); 3316 (*wqe_size)++; 3317 } 3318 3319 /* Calculate currently allowed length */ 3320 cur = min_t(u32, len, seg_siz); 3321 memcpy(seg_prt, src, cur); 3322 3323 /* Update segment variables */ 3324 seg_prt += cur; 3325 seg_siz -= cur; 3326 3327 /* Update sge variables */ 3328 src += cur; 3329 len -= cur; 3330 3331 /* Swap fully-completed segments */ 3332 if (!seg_siz) 3333 swap_wqe_data64((u64 *)wqe); 3334 } 3335 } 3336 3337 /* swap last not completed segment */ 3338 if (seg_siz) 3339 swap_wqe_data64((u64 *)wqe); 3340 3341 return data_size; 3342 } 3343 3344 #define RQ_SGE_SET(sge, vaddr, vlength, vflags) \ 3345 do { \ 3346 DMA_REGPAIR_LE(sge->addr, vaddr); \ 3347 (sge)->length = cpu_to_le32(vlength); \ 3348 (sge)->flags = cpu_to_le32(vflags); \ 3349 } while (0) 3350 3351 #define SRQ_HDR_SET(hdr, vwr_id, num_sge) \ 3352 do { \ 3353 DMA_REGPAIR_LE(hdr->wr_id, vwr_id); \ 3354 (hdr)->num_sges = num_sge; \ 3355 } while (0) 3356 3357 #define SRQ_SGE_SET(sge, vaddr, vlength, vlkey) \ 3358 do { \ 3359 DMA_REGPAIR_LE(sge->addr, vaddr); \ 3360 (sge)->length = cpu_to_le32(vlength); \ 3361 (sge)->l_key = cpu_to_le32(vlkey); \ 3362 } while (0) 3363 3364 static u32 qedr_prepare_sq_sges(struct qedr_qp *qp, u8 *wqe_size, 3365 const struct ib_send_wr *wr) 3366 { 3367 u32 data_size = 0; 3368 int i; 3369 3370 for (i = 0; i < wr->num_sge; i++) { 3371 struct rdma_sq_sge *sge = qed_chain_produce(&qp->sq.pbl); 3372 3373 DMA_REGPAIR_LE(sge->addr, wr->sg_list[i].addr); 3374 sge->l_key = cpu_to_le32(wr->sg_list[i].lkey); 3375 sge->length = cpu_to_le32(wr->sg_list[i].length); 3376 data_size += wr->sg_list[i].length; 3377 } 3378 3379 if (wqe_size) 3380 *wqe_size += wr->num_sge; 3381 3382 return data_size; 3383 } 3384 3385 static u32 qedr_prepare_sq_rdma_data(struct qedr_dev *dev, 3386 struct qedr_qp *qp, 3387 struct rdma_sq_rdma_wqe_1st *rwqe, 3388 struct rdma_sq_rdma_wqe_2nd *rwqe2, 3389 const struct ib_send_wr *wr, 3390 const struct ib_send_wr **bad_wr) 3391 { 3392 rwqe2->r_key = cpu_to_le32(rdma_wr(wr)->rkey); 3393 DMA_REGPAIR_LE(rwqe2->remote_va, rdma_wr(wr)->remote_addr); 3394 3395 if (wr->send_flags & IB_SEND_INLINE && 3396 (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || 3397 wr->opcode == IB_WR_RDMA_WRITE)) { 3398 u8 flags = 0; 3399 3400 SET_FIELD2(flags, RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG, 1); 3401 return qedr_prepare_sq_inline_data(dev, qp, &rwqe->wqe_size, wr, 3402 bad_wr, &rwqe->flags, flags); 3403 } 3404 3405 return qedr_prepare_sq_sges(qp, &rwqe->wqe_size, wr); 3406 } 3407 3408 static u32 qedr_prepare_sq_send_data(struct qedr_dev *dev, 3409 struct qedr_qp *qp, 3410 struct rdma_sq_send_wqe_1st *swqe, 3411 struct rdma_sq_send_wqe_2st *swqe2, 3412 const struct ib_send_wr *wr, 3413 const struct ib_send_wr **bad_wr) 3414 { 3415 memset(swqe2, 0, sizeof(*swqe2)); 3416 if (wr->send_flags & IB_SEND_INLINE) { 3417 u8 flags = 0; 3418 3419 SET_FIELD2(flags, RDMA_SQ_SEND_WQE_INLINE_FLG, 1); 3420 return qedr_prepare_sq_inline_data(dev, qp, &swqe->wqe_size, wr, 3421 bad_wr, &swqe->flags, flags); 3422 } 3423 3424 return qedr_prepare_sq_sges(qp, &swqe->wqe_size, wr); 3425 } 3426 3427 static int qedr_prepare_reg(struct qedr_qp *qp, 3428 struct rdma_sq_fmr_wqe_1st *fwqe1, 3429 const struct ib_reg_wr *wr) 3430 { 3431 struct qedr_mr *mr = get_qedr_mr(wr->mr); 3432 struct rdma_sq_fmr_wqe_2nd *fwqe2; 3433 3434 fwqe2 = (struct rdma_sq_fmr_wqe_2nd *)qed_chain_produce(&qp->sq.pbl); 3435 fwqe1->addr.hi = upper_32_bits(mr->ibmr.iova); 3436 fwqe1->addr.lo = lower_32_bits(mr->ibmr.iova); 3437 fwqe1->l_key = wr->key; 3438 3439 fwqe2->access_ctrl = 0; 3440 3441 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_READ, 3442 !!(wr->access & IB_ACCESS_REMOTE_READ)); 3443 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE, 3444 !!(wr->access & IB_ACCESS_REMOTE_WRITE)); 3445 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC, 3446 !!(wr->access & IB_ACCESS_REMOTE_ATOMIC)); 3447 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_READ, 1); 3448 SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE, 3449 !!(wr->access & IB_ACCESS_LOCAL_WRITE)); 3450 fwqe2->fmr_ctrl = 0; 3451 3452 SET_FIELD2(fwqe2->fmr_ctrl, RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG, 3453 ilog2(mr->ibmr.page_size) - 12); 3454 3455 fwqe2->length_hi = 0; 3456 fwqe2->length_lo = mr->ibmr.length; 3457 fwqe2->pbl_addr.hi = upper_32_bits(mr->info.pbl_table->pa); 3458 fwqe2->pbl_addr.lo = lower_32_bits(mr->info.pbl_table->pa); 3459 3460 qp->wqe_wr_id[qp->sq.prod].mr = mr; 3461 3462 return 0; 3463 } 3464 3465 static enum ib_wc_opcode qedr_ib_to_wc_opcode(enum ib_wr_opcode opcode) 3466 { 3467 switch (opcode) { 3468 case IB_WR_RDMA_WRITE: 3469 case IB_WR_RDMA_WRITE_WITH_IMM: 3470 return IB_WC_RDMA_WRITE; 3471 case IB_WR_SEND_WITH_IMM: 3472 case IB_WR_SEND: 3473 case IB_WR_SEND_WITH_INV: 3474 return IB_WC_SEND; 3475 case IB_WR_RDMA_READ: 3476 case IB_WR_RDMA_READ_WITH_INV: 3477 return IB_WC_RDMA_READ; 3478 case IB_WR_ATOMIC_CMP_AND_SWP: 3479 return IB_WC_COMP_SWAP; 3480 case IB_WR_ATOMIC_FETCH_AND_ADD: 3481 return IB_WC_FETCH_ADD; 3482 case IB_WR_REG_MR: 3483 return IB_WC_REG_MR; 3484 case IB_WR_LOCAL_INV: 3485 return IB_WC_LOCAL_INV; 3486 default: 3487 return IB_WC_SEND; 3488 } 3489 } 3490 3491 static inline bool qedr_can_post_send(struct qedr_qp *qp, 3492 const struct ib_send_wr *wr) 3493 { 3494 int wq_is_full, err_wr, pbl_is_full; 3495 struct qedr_dev *dev = qp->dev; 3496 3497 /* prevent SQ overflow and/or processing of a bad WR */ 3498 err_wr = wr->num_sge > qp->sq.max_sges; 3499 wq_is_full = qedr_wq_is_full(&qp->sq); 3500 pbl_is_full = qed_chain_get_elem_left_u32(&qp->sq.pbl) < 3501 QEDR_MAX_SQE_ELEMENTS_PER_SQE; 3502 if (wq_is_full || err_wr || pbl_is_full) { 3503 if (wq_is_full && !(qp->err_bitmap & QEDR_QP_ERR_SQ_FULL)) { 3504 DP_ERR(dev, 3505 "error: WQ is full. Post send on QP %p failed (this error appears only once)\n", 3506 qp); 3507 qp->err_bitmap |= QEDR_QP_ERR_SQ_FULL; 3508 } 3509 3510 if (err_wr && !(qp->err_bitmap & QEDR_QP_ERR_BAD_SR)) { 3511 DP_ERR(dev, 3512 "error: WR is bad. Post send on QP %p failed (this error appears only once)\n", 3513 qp); 3514 qp->err_bitmap |= QEDR_QP_ERR_BAD_SR; 3515 } 3516 3517 if (pbl_is_full && 3518 !(qp->err_bitmap & QEDR_QP_ERR_SQ_PBL_FULL)) { 3519 DP_ERR(dev, 3520 "error: WQ PBL is full. Post send on QP %p failed (this error appears only once)\n", 3521 qp); 3522 qp->err_bitmap |= QEDR_QP_ERR_SQ_PBL_FULL; 3523 } 3524 return false; 3525 } 3526 return true; 3527 } 3528 3529 static int __qedr_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, 3530 const struct ib_send_wr **bad_wr) 3531 { 3532 struct qedr_dev *dev = get_qedr_dev(ibqp->device); 3533 struct qedr_qp *qp = get_qedr_qp(ibqp); 3534 struct rdma_sq_atomic_wqe_1st *awqe1; 3535 struct rdma_sq_atomic_wqe_2nd *awqe2; 3536 struct rdma_sq_atomic_wqe_3rd *awqe3; 3537 struct rdma_sq_send_wqe_2st *swqe2; 3538 struct rdma_sq_local_inv_wqe *iwqe; 3539 struct rdma_sq_rdma_wqe_2nd *rwqe2; 3540 struct rdma_sq_send_wqe_1st *swqe; 3541 struct rdma_sq_rdma_wqe_1st *rwqe; 3542 struct rdma_sq_fmr_wqe_1st *fwqe1; 3543 struct rdma_sq_common_wqe *wqe; 3544 u32 length; 3545 int rc = 0; 3546 bool comp; 3547 3548 if (!qedr_can_post_send(qp, wr)) { 3549 *bad_wr = wr; 3550 return -ENOMEM; 3551 } 3552 3553 wqe = qed_chain_produce(&qp->sq.pbl); 3554 qp->wqe_wr_id[qp->sq.prod].signaled = 3555 !!(wr->send_flags & IB_SEND_SIGNALED) || qp->signaled; 3556 3557 wqe->flags = 0; 3558 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_SE_FLG, 3559 !!(wr->send_flags & IB_SEND_SOLICITED)); 3560 comp = (!!(wr->send_flags & IB_SEND_SIGNALED)) || qp->signaled; 3561 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_COMP_FLG, comp); 3562 SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_RD_FENCE_FLG, 3563 !!(wr->send_flags & IB_SEND_FENCE)); 3564 wqe->prev_wqe_size = qp->prev_wqe_size; 3565 3566 qp->wqe_wr_id[qp->sq.prod].opcode = qedr_ib_to_wc_opcode(wr->opcode); 3567 3568 switch (wr->opcode) { 3569 case IB_WR_SEND_WITH_IMM: 3570 if (unlikely(rdma_protocol_iwarp(&dev->ibdev, 1))) { 3571 rc = -EINVAL; 3572 *bad_wr = wr; 3573 break; 3574 } 3575 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_IMM; 3576 swqe = (struct rdma_sq_send_wqe_1st *)wqe; 3577 swqe->wqe_size = 2; 3578 swqe2 = qed_chain_produce(&qp->sq.pbl); 3579 3580 swqe->inv_key_or_imm_data = cpu_to_le32(be32_to_cpu(wr->ex.imm_data)); 3581 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2, 3582 wr, bad_wr); 3583 swqe->length = cpu_to_le32(length); 3584 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size; 3585 qp->prev_wqe_size = swqe->wqe_size; 3586 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length; 3587 break; 3588 case IB_WR_SEND: 3589 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND; 3590 swqe = (struct rdma_sq_send_wqe_1st *)wqe; 3591 3592 swqe->wqe_size = 2; 3593 swqe2 = qed_chain_produce(&qp->sq.pbl); 3594 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2, 3595 wr, bad_wr); 3596 swqe->length = cpu_to_le32(length); 3597 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size; 3598 qp->prev_wqe_size = swqe->wqe_size; 3599 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length; 3600 break; 3601 case IB_WR_SEND_WITH_INV: 3602 wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE; 3603 swqe = (struct rdma_sq_send_wqe_1st *)wqe; 3604 swqe2 = qed_chain_produce(&qp->sq.pbl); 3605 swqe->wqe_size = 2; 3606 swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.invalidate_rkey); 3607 length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2, 3608 wr, bad_wr); 3609 swqe->length = cpu_to_le32(length); 3610 qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size; 3611 qp->prev_wqe_size = swqe->wqe_size; 3612 qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length; 3613 break; 3614 3615 case IB_WR_RDMA_WRITE_WITH_IMM: 3616 if (unlikely(rdma_protocol_iwarp(&dev->ibdev, 1))) { 3617 rc = -EINVAL; 3618 *bad_wr = wr; 3619 break; 3620 } 3621 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM; 3622 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe; 3623 3624 rwqe->wqe_size = 2; 3625 rwqe->imm_data = htonl(cpu_to_le32(wr->ex.imm_data)); 3626 rwqe2 = qed_chain_produce(&qp->sq.pbl); 3627 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2, 3628 wr, bad_wr); 3629 rwqe->length = cpu_to_le32(length); 3630 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size; 3631 qp->prev_wqe_size = rwqe->wqe_size; 3632 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length; 3633 break; 3634 case IB_WR_RDMA_WRITE: 3635 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR; 3636 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe; 3637 3638 rwqe->wqe_size = 2; 3639 rwqe2 = qed_chain_produce(&qp->sq.pbl); 3640 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2, 3641 wr, bad_wr); 3642 rwqe->length = cpu_to_le32(length); 3643 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size; 3644 qp->prev_wqe_size = rwqe->wqe_size; 3645 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length; 3646 break; 3647 case IB_WR_RDMA_READ_WITH_INV: 3648 SET_FIELD2(wqe->flags, RDMA_SQ_RDMA_WQE_1ST_READ_INV_FLG, 1); 3649 fallthrough; /* same is identical to RDMA READ */ 3650 3651 case IB_WR_RDMA_READ: 3652 wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_RD; 3653 rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe; 3654 3655 rwqe->wqe_size = 2; 3656 rwqe2 = qed_chain_produce(&qp->sq.pbl); 3657 length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2, 3658 wr, bad_wr); 3659 rwqe->length = cpu_to_le32(length); 3660 qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size; 3661 qp->prev_wqe_size = rwqe->wqe_size; 3662 qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length; 3663 break; 3664 3665 case IB_WR_ATOMIC_CMP_AND_SWP: 3666 case IB_WR_ATOMIC_FETCH_AND_ADD: 3667 awqe1 = (struct rdma_sq_atomic_wqe_1st *)wqe; 3668 awqe1->wqe_size = 4; 3669 3670 awqe2 = qed_chain_produce(&qp->sq.pbl); 3671 DMA_REGPAIR_LE(awqe2->remote_va, atomic_wr(wr)->remote_addr); 3672 awqe2->r_key = cpu_to_le32(atomic_wr(wr)->rkey); 3673 3674 awqe3 = qed_chain_produce(&qp->sq.pbl); 3675 3676 if (wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { 3677 wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_ADD; 3678 DMA_REGPAIR_LE(awqe3->swap_data, 3679 atomic_wr(wr)->compare_add); 3680 } else { 3681 wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP; 3682 DMA_REGPAIR_LE(awqe3->swap_data, 3683 atomic_wr(wr)->swap); 3684 DMA_REGPAIR_LE(awqe3->cmp_data, 3685 atomic_wr(wr)->compare_add); 3686 } 3687 3688 qedr_prepare_sq_sges(qp, NULL, wr); 3689 3690 qp->wqe_wr_id[qp->sq.prod].wqe_size = awqe1->wqe_size; 3691 qp->prev_wqe_size = awqe1->wqe_size; 3692 break; 3693 3694 case IB_WR_LOCAL_INV: 3695 iwqe = (struct rdma_sq_local_inv_wqe *)wqe; 3696 iwqe->wqe_size = 1; 3697 3698 iwqe->req_type = RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE; 3699 iwqe->inv_l_key = wr->ex.invalidate_rkey; 3700 qp->wqe_wr_id[qp->sq.prod].wqe_size = iwqe->wqe_size; 3701 qp->prev_wqe_size = iwqe->wqe_size; 3702 break; 3703 case IB_WR_REG_MR: 3704 DP_DEBUG(dev, QEDR_MSG_CQ, "REG_MR\n"); 3705 wqe->req_type = RDMA_SQ_REQ_TYPE_FAST_MR; 3706 fwqe1 = (struct rdma_sq_fmr_wqe_1st *)wqe; 3707 fwqe1->wqe_size = 2; 3708 3709 rc = qedr_prepare_reg(qp, fwqe1, reg_wr(wr)); 3710 if (rc) { 3711 DP_ERR(dev, "IB_REG_MR failed rc=%d\n", rc); 3712 *bad_wr = wr; 3713 break; 3714 } 3715 3716 qp->wqe_wr_id[qp->sq.prod].wqe_size = fwqe1->wqe_size; 3717 qp->prev_wqe_size = fwqe1->wqe_size; 3718 break; 3719 default: 3720 DP_ERR(dev, "invalid opcode 0x%x!\n", wr->opcode); 3721 rc = -EINVAL; 3722 *bad_wr = wr; 3723 break; 3724 } 3725 3726 if (*bad_wr) { 3727 u16 value; 3728 3729 /* Restore prod to its position before 3730 * this WR was processed 3731 */ 3732 value = le16_to_cpu(qp->sq.db_data.data.value); 3733 qed_chain_set_prod(&qp->sq.pbl, value, wqe); 3734 3735 /* Restore prev_wqe_size */ 3736 qp->prev_wqe_size = wqe->prev_wqe_size; 3737 rc = -EINVAL; 3738 DP_ERR(dev, "POST SEND FAILED\n"); 3739 } 3740 3741 return rc; 3742 } 3743 3744 int qedr_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, 3745 const struct ib_send_wr **bad_wr) 3746 { 3747 struct qedr_dev *dev = get_qedr_dev(ibqp->device); 3748 struct qedr_qp *qp = get_qedr_qp(ibqp); 3749 unsigned long flags; 3750 int rc = 0; 3751 3752 *bad_wr = NULL; 3753 3754 if (qp->qp_type == IB_QPT_GSI) 3755 return qedr_gsi_post_send(ibqp, wr, bad_wr); 3756 3757 spin_lock_irqsave(&qp->q_lock, flags); 3758 3759 if (rdma_protocol_roce(&dev->ibdev, 1)) { 3760 if ((qp->state != QED_ROCE_QP_STATE_RTS) && 3761 (qp->state != QED_ROCE_QP_STATE_ERR) && 3762 (qp->state != QED_ROCE_QP_STATE_SQD)) { 3763 spin_unlock_irqrestore(&qp->q_lock, flags); 3764 *bad_wr = wr; 3765 DP_DEBUG(dev, QEDR_MSG_CQ, 3766 "QP in wrong state! QP icid=0x%x state %d\n", 3767 qp->icid, qp->state); 3768 return -EINVAL; 3769 } 3770 } 3771 3772 while (wr) { 3773 rc = __qedr_post_send(ibqp, wr, bad_wr); 3774 if (rc) 3775 break; 3776 3777 qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id; 3778 3779 qedr_inc_sw_prod(&qp->sq); 3780 3781 qp->sq.db_data.data.value++; 3782 3783 wr = wr->next; 3784 } 3785 3786 /* Trigger doorbell 3787 * If there was a failure in the first WR then it will be triggered in 3788 * vane. However this is not harmful (as long as the producer value is 3789 * unchanged). For performance reasons we avoid checking for this 3790 * redundant doorbell. 3791 * 3792 * qp->wqe_wr_id is accessed during qedr_poll_cq, as 3793 * soon as we give the doorbell, we could get a completion 3794 * for this wr, therefore we need to make sure that the 3795 * memory is updated before giving the doorbell. 3796 * During qedr_poll_cq, rmb is called before accessing the 3797 * cqe. This covers for the smp_rmb as well. 3798 */ 3799 smp_wmb(); 3800 writel(qp->sq.db_data.raw, qp->sq.db); 3801 3802 spin_unlock_irqrestore(&qp->q_lock, flags); 3803 3804 return rc; 3805 } 3806 3807 static u32 qedr_srq_elem_left(struct qedr_srq_hwq_info *hw_srq) 3808 { 3809 u32 used; 3810 3811 /* Calculate number of elements used based on producer 3812 * count and consumer count and subtract it from max 3813 * work request supported so that we get elements left. 3814 */ 3815 used = hw_srq->wr_prod_cnt - (u32)atomic_read(&hw_srq->wr_cons_cnt); 3816 3817 return hw_srq->max_wr - used; 3818 } 3819 3820 int qedr_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr, 3821 const struct ib_recv_wr **bad_wr) 3822 { 3823 struct qedr_srq *srq = get_qedr_srq(ibsrq); 3824 struct qedr_srq_hwq_info *hw_srq; 3825 struct qedr_dev *dev = srq->dev; 3826 struct qed_chain *pbl; 3827 unsigned long flags; 3828 int status = 0; 3829 u32 num_sge; 3830 3831 spin_lock_irqsave(&srq->lock, flags); 3832 3833 hw_srq = &srq->hw_srq; 3834 pbl = &srq->hw_srq.pbl; 3835 while (wr) { 3836 struct rdma_srq_wqe_header *hdr; 3837 int i; 3838 3839 if (!qedr_srq_elem_left(hw_srq) || 3840 wr->num_sge > srq->hw_srq.max_sges) { 3841 DP_ERR(dev, "Can't post WR (%d,%d) || (%d > %d)\n", 3842 hw_srq->wr_prod_cnt, 3843 atomic_read(&hw_srq->wr_cons_cnt), 3844 wr->num_sge, srq->hw_srq.max_sges); 3845 status = -ENOMEM; 3846 *bad_wr = wr; 3847 break; 3848 } 3849 3850 hdr = qed_chain_produce(pbl); 3851 num_sge = wr->num_sge; 3852 /* Set number of sge and work request id in header */ 3853 SRQ_HDR_SET(hdr, wr->wr_id, num_sge); 3854 3855 srq->hw_srq.wr_prod_cnt++; 3856 hw_srq->wqe_prod++; 3857 hw_srq->sge_prod++; 3858 3859 DP_DEBUG(dev, QEDR_MSG_SRQ, 3860 "SRQ WR: SGEs: %d with wr_id[%d] = %llx\n", 3861 wr->num_sge, hw_srq->wqe_prod, wr->wr_id); 3862 3863 for (i = 0; i < wr->num_sge; i++) { 3864 struct rdma_srq_sge *srq_sge = qed_chain_produce(pbl); 3865 3866 /* Set SGE length, lkey and address */ 3867 SRQ_SGE_SET(srq_sge, wr->sg_list[i].addr, 3868 wr->sg_list[i].length, wr->sg_list[i].lkey); 3869 3870 DP_DEBUG(dev, QEDR_MSG_SRQ, 3871 "[%d]: len %d key %x addr %x:%x\n", 3872 i, srq_sge->length, srq_sge->l_key, 3873 srq_sge->addr.hi, srq_sge->addr.lo); 3874 hw_srq->sge_prod++; 3875 } 3876 3877 /* Update WQE and SGE information before 3878 * updating producer. 3879 */ 3880 dma_wmb(); 3881 3882 /* SRQ producer is 8 bytes. Need to update SGE producer index 3883 * in first 4 bytes and need to update WQE producer in 3884 * next 4 bytes. 3885 */ 3886 srq->hw_srq.virt_prod_pair_addr->sge_prod = cpu_to_le32(hw_srq->sge_prod); 3887 /* Make sure sge producer is updated first */ 3888 dma_wmb(); 3889 srq->hw_srq.virt_prod_pair_addr->wqe_prod = cpu_to_le32(hw_srq->wqe_prod); 3890 3891 wr = wr->next; 3892 } 3893 3894 DP_DEBUG(dev, QEDR_MSG_SRQ, "POST: Elements in S-RQ: %d\n", 3895 qed_chain_get_elem_left(pbl)); 3896 spin_unlock_irqrestore(&srq->lock, flags); 3897 3898 return status; 3899 } 3900 3901 int qedr_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, 3902 const struct ib_recv_wr **bad_wr) 3903 { 3904 struct qedr_qp *qp = get_qedr_qp(ibqp); 3905 struct qedr_dev *dev = qp->dev; 3906 unsigned long flags; 3907 int status = 0; 3908 3909 if (qp->qp_type == IB_QPT_GSI) 3910 return qedr_gsi_post_recv(ibqp, wr, bad_wr); 3911 3912 spin_lock_irqsave(&qp->q_lock, flags); 3913 3914 while (wr) { 3915 int i; 3916 3917 if (qed_chain_get_elem_left_u32(&qp->rq.pbl) < 3918 QEDR_MAX_RQE_ELEMENTS_PER_RQE || 3919 wr->num_sge > qp->rq.max_sges) { 3920 DP_ERR(dev, "Can't post WR (%d < %d) || (%d > %d)\n", 3921 qed_chain_get_elem_left_u32(&qp->rq.pbl), 3922 QEDR_MAX_RQE_ELEMENTS_PER_RQE, wr->num_sge, 3923 qp->rq.max_sges); 3924 status = -ENOMEM; 3925 *bad_wr = wr; 3926 break; 3927 } 3928 for (i = 0; i < wr->num_sge; i++) { 3929 u32 flags = 0; 3930 struct rdma_rq_sge *rqe = 3931 qed_chain_produce(&qp->rq.pbl); 3932 3933 /* First one must include the number 3934 * of SGE in the list 3935 */ 3936 if (!i) 3937 SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES, 3938 wr->num_sge); 3939 3940 SET_FIELD(flags, RDMA_RQ_SGE_L_KEY_LO, 3941 wr->sg_list[i].lkey); 3942 3943 RQ_SGE_SET(rqe, wr->sg_list[i].addr, 3944 wr->sg_list[i].length, flags); 3945 } 3946 3947 /* Special case of no sges. FW requires between 1-4 sges... 3948 * in this case we need to post 1 sge with length zero. this is 3949 * because rdma write with immediate consumes an RQ. 3950 */ 3951 if (!wr->num_sge) { 3952 u32 flags = 0; 3953 struct rdma_rq_sge *rqe = 3954 qed_chain_produce(&qp->rq.pbl); 3955 3956 /* First one must include the number 3957 * of SGE in the list 3958 */ 3959 SET_FIELD(flags, RDMA_RQ_SGE_L_KEY_LO, 0); 3960 SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES, 1); 3961 3962 RQ_SGE_SET(rqe, 0, 0, flags); 3963 i = 1; 3964 } 3965 3966 qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id; 3967 qp->rqe_wr_id[qp->rq.prod].wqe_size = i; 3968 3969 qedr_inc_sw_prod(&qp->rq); 3970 3971 /* qp->rqe_wr_id is accessed during qedr_poll_cq, as 3972 * soon as we give the doorbell, we could get a completion 3973 * for this wr, therefore we need to make sure that the 3974 * memory is update before giving the doorbell. 3975 * During qedr_poll_cq, rmb is called before accessing the 3976 * cqe. This covers for the smp_rmb as well. 3977 */ 3978 smp_wmb(); 3979 3980 qp->rq.db_data.data.value++; 3981 3982 writel(qp->rq.db_data.raw, qp->rq.db); 3983 3984 if (rdma_protocol_iwarp(&dev->ibdev, 1)) { 3985 writel(qp->rq.iwarp_db2_data.raw, qp->rq.iwarp_db2); 3986 } 3987 3988 wr = wr->next; 3989 } 3990 3991 spin_unlock_irqrestore(&qp->q_lock, flags); 3992 3993 return status; 3994 } 3995 3996 static int is_valid_cqe(struct qedr_cq *cq, union rdma_cqe *cqe) 3997 { 3998 struct rdma_cqe_requester *resp_cqe = &cqe->req; 3999 4000 return (resp_cqe->flags & RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK) == 4001 cq->pbl_toggle; 4002 } 4003 4004 static struct qedr_qp *cqe_get_qp(union rdma_cqe *cqe) 4005 { 4006 struct rdma_cqe_requester *resp_cqe = &cqe->req; 4007 struct qedr_qp *qp; 4008 4009 qp = (struct qedr_qp *)(uintptr_t)HILO_GEN(resp_cqe->qp_handle.hi, 4010 resp_cqe->qp_handle.lo, 4011 u64); 4012 return qp; 4013 } 4014 4015 static enum rdma_cqe_type cqe_get_type(union rdma_cqe *cqe) 4016 { 4017 struct rdma_cqe_requester *resp_cqe = &cqe->req; 4018 4019 return GET_FIELD(resp_cqe->flags, RDMA_CQE_REQUESTER_TYPE); 4020 } 4021 4022 /* Return latest CQE (needs processing) */ 4023 static union rdma_cqe *get_cqe(struct qedr_cq *cq) 4024 { 4025 return cq->latest_cqe; 4026 } 4027 4028 /* In fmr we need to increase the number of fmr completed counter for the fmr 4029 * algorithm determining whether we can free a pbl or not. 4030 * we need to perform this whether the work request was signaled or not. for 4031 * this purpose we call this function from the condition that checks if a wr 4032 * should be skipped, to make sure we don't miss it ( possibly this fmr 4033 * operation was not signalted) 4034 */ 4035 static inline void qedr_chk_if_fmr(struct qedr_qp *qp) 4036 { 4037 if (qp->wqe_wr_id[qp->sq.cons].opcode == IB_WC_REG_MR) 4038 qp->wqe_wr_id[qp->sq.cons].mr->info.completed++; 4039 } 4040 4041 static int process_req(struct qedr_dev *dev, struct qedr_qp *qp, 4042 struct qedr_cq *cq, int num_entries, 4043 struct ib_wc *wc, u16 hw_cons, enum ib_wc_status status, 4044 int force) 4045 { 4046 u16 cnt = 0; 4047 4048 while (num_entries && qp->sq.wqe_cons != hw_cons) { 4049 if (!qp->wqe_wr_id[qp->sq.cons].signaled && !force) { 4050 qedr_chk_if_fmr(qp); 4051 /* skip WC */ 4052 goto next_cqe; 4053 } 4054 4055 /* fill WC */ 4056 wc->status = status; 4057 wc->vendor_err = 0; 4058 wc->wc_flags = 0; 4059 wc->src_qp = qp->id; 4060 wc->qp = &qp->ibqp; 4061 4062 wc->wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id; 4063 wc->opcode = qp->wqe_wr_id[qp->sq.cons].opcode; 4064 4065 switch (wc->opcode) { 4066 case IB_WC_RDMA_WRITE: 4067 wc->byte_len = qp->wqe_wr_id[qp->sq.cons].bytes_len; 4068 break; 4069 case IB_WC_COMP_SWAP: 4070 case IB_WC_FETCH_ADD: 4071 wc->byte_len = 8; 4072 break; 4073 case IB_WC_REG_MR: 4074 qp->wqe_wr_id[qp->sq.cons].mr->info.completed++; 4075 break; 4076 case IB_WC_RDMA_READ: 4077 case IB_WC_SEND: 4078 wc->byte_len = qp->wqe_wr_id[qp->sq.cons].bytes_len; 4079 break; 4080 default: 4081 break; 4082 } 4083 4084 num_entries--; 4085 wc++; 4086 cnt++; 4087 next_cqe: 4088 while (qp->wqe_wr_id[qp->sq.cons].wqe_size--) 4089 qed_chain_consume(&qp->sq.pbl); 4090 qedr_inc_sw_cons(&qp->sq); 4091 } 4092 4093 return cnt; 4094 } 4095 4096 static int qedr_poll_cq_req(struct qedr_dev *dev, 4097 struct qedr_qp *qp, struct qedr_cq *cq, 4098 int num_entries, struct ib_wc *wc, 4099 struct rdma_cqe_requester *req) 4100 { 4101 int cnt = 0; 4102 4103 switch (req->status) { 4104 case RDMA_CQE_REQ_STS_OK: 4105 cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons, 4106 IB_WC_SUCCESS, 0); 4107 break; 4108 case RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR: 4109 if (qp->state != QED_ROCE_QP_STATE_ERR) 4110 DP_DEBUG(dev, QEDR_MSG_CQ, 4111 "Error: POLL CQ with RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4112 cq->icid, qp->icid); 4113 cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons, 4114 IB_WC_WR_FLUSH_ERR, 1); 4115 break; 4116 default: 4117 /* process all WQE before the cosumer */ 4118 qp->state = QED_ROCE_QP_STATE_ERR; 4119 cnt = process_req(dev, qp, cq, num_entries, wc, 4120 req->sq_cons - 1, IB_WC_SUCCESS, 0); 4121 wc += cnt; 4122 /* if we have extra WC fill it with actual error info */ 4123 if (cnt < num_entries) { 4124 enum ib_wc_status wc_status; 4125 4126 switch (req->status) { 4127 case RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR: 4128 DP_ERR(dev, 4129 "Error: POLL CQ with RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4130 cq->icid, qp->icid); 4131 wc_status = IB_WC_BAD_RESP_ERR; 4132 break; 4133 case RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR: 4134 DP_ERR(dev, 4135 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4136 cq->icid, qp->icid); 4137 wc_status = IB_WC_LOC_LEN_ERR; 4138 break; 4139 case RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR: 4140 DP_ERR(dev, 4141 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4142 cq->icid, qp->icid); 4143 wc_status = IB_WC_LOC_QP_OP_ERR; 4144 break; 4145 case RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR: 4146 DP_ERR(dev, 4147 "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4148 cq->icid, qp->icid); 4149 wc_status = IB_WC_LOC_PROT_ERR; 4150 break; 4151 case RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR: 4152 DP_ERR(dev, 4153 "Error: POLL CQ with RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4154 cq->icid, qp->icid); 4155 wc_status = IB_WC_MW_BIND_ERR; 4156 break; 4157 case RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR: 4158 DP_ERR(dev, 4159 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4160 cq->icid, qp->icid); 4161 wc_status = IB_WC_REM_INV_REQ_ERR; 4162 break; 4163 case RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR: 4164 DP_ERR(dev, 4165 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4166 cq->icid, qp->icid); 4167 wc_status = IB_WC_REM_ACCESS_ERR; 4168 break; 4169 case RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR: 4170 DP_ERR(dev, 4171 "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4172 cq->icid, qp->icid); 4173 wc_status = IB_WC_REM_OP_ERR; 4174 break; 4175 case RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR: 4176 DP_ERR(dev, 4177 "Error: POLL CQ with RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4178 cq->icid, qp->icid); 4179 wc_status = IB_WC_RNR_RETRY_EXC_ERR; 4180 break; 4181 case RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR: 4182 DP_ERR(dev, 4183 "Error: POLL CQ with ROCE_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4184 cq->icid, qp->icid); 4185 wc_status = IB_WC_RETRY_EXC_ERR; 4186 break; 4187 default: 4188 DP_ERR(dev, 4189 "Error: POLL CQ with IB_WC_GENERAL_ERR. CQ icid=0x%x, QP icid=0x%x\n", 4190 cq->icid, qp->icid); 4191 wc_status = IB_WC_GENERAL_ERR; 4192 } 4193 cnt += process_req(dev, qp, cq, 1, wc, req->sq_cons, 4194 wc_status, 1); 4195 } 4196 } 4197 4198 return cnt; 4199 } 4200 4201 static inline int qedr_cqe_resp_status_to_ib(u8 status) 4202 { 4203 switch (status) { 4204 case RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR: 4205 return IB_WC_LOC_ACCESS_ERR; 4206 case RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR: 4207 return IB_WC_LOC_LEN_ERR; 4208 case RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR: 4209 return IB_WC_LOC_QP_OP_ERR; 4210 case RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR: 4211 return IB_WC_LOC_PROT_ERR; 4212 case RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR: 4213 return IB_WC_MW_BIND_ERR; 4214 case RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR: 4215 return IB_WC_REM_INV_RD_REQ_ERR; 4216 case RDMA_CQE_RESP_STS_OK: 4217 return IB_WC_SUCCESS; 4218 default: 4219 return IB_WC_GENERAL_ERR; 4220 } 4221 } 4222 4223 static inline int qedr_set_ok_cqe_resp_wc(struct rdma_cqe_responder *resp, 4224 struct ib_wc *wc) 4225 { 4226 wc->status = IB_WC_SUCCESS; 4227 wc->byte_len = le32_to_cpu(resp->length); 4228 4229 if (resp->flags & QEDR_RESP_IMM) { 4230 wc->ex.imm_data = cpu_to_be32(le32_to_cpu(resp->imm_data_or_inv_r_Key)); 4231 wc->wc_flags |= IB_WC_WITH_IMM; 4232 4233 if (resp->flags & QEDR_RESP_RDMA) 4234 wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 4235 4236 if (resp->flags & QEDR_RESP_INV) 4237 return -EINVAL; 4238 4239 } else if (resp->flags & QEDR_RESP_INV) { 4240 wc->ex.imm_data = le32_to_cpu(resp->imm_data_or_inv_r_Key); 4241 wc->wc_flags |= IB_WC_WITH_INVALIDATE; 4242 4243 if (resp->flags & QEDR_RESP_RDMA) 4244 return -EINVAL; 4245 4246 } else if (resp->flags & QEDR_RESP_RDMA) { 4247 return -EINVAL; 4248 } 4249 4250 return 0; 4251 } 4252 4253 static void __process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp, 4254 struct qedr_cq *cq, struct ib_wc *wc, 4255 struct rdma_cqe_responder *resp, u64 wr_id) 4256 { 4257 /* Must fill fields before qedr_set_ok_cqe_resp_wc() */ 4258 wc->opcode = IB_WC_RECV; 4259 wc->wc_flags = 0; 4260 4261 if (likely(resp->status == RDMA_CQE_RESP_STS_OK)) { 4262 if (qedr_set_ok_cqe_resp_wc(resp, wc)) 4263 DP_ERR(dev, 4264 "CQ %p (icid=%d) has invalid CQE responder flags=0x%x\n", 4265 cq, cq->icid, resp->flags); 4266 4267 } else { 4268 wc->status = qedr_cqe_resp_status_to_ib(resp->status); 4269 if (wc->status == IB_WC_GENERAL_ERR) 4270 DP_ERR(dev, 4271 "CQ %p (icid=%d) contains an invalid CQE status %d\n", 4272 cq, cq->icid, resp->status); 4273 } 4274 4275 /* Fill the rest of the WC */ 4276 wc->vendor_err = 0; 4277 wc->src_qp = qp->id; 4278 wc->qp = &qp->ibqp; 4279 wc->wr_id = wr_id; 4280 } 4281 4282 static int process_resp_one_srq(struct qedr_dev *dev, struct qedr_qp *qp, 4283 struct qedr_cq *cq, struct ib_wc *wc, 4284 struct rdma_cqe_responder *resp) 4285 { 4286 struct qedr_srq *srq = qp->srq; 4287 u64 wr_id; 4288 4289 wr_id = HILO_GEN(le32_to_cpu(resp->srq_wr_id.hi), 4290 le32_to_cpu(resp->srq_wr_id.lo), u64); 4291 4292 if (resp->status == RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR) { 4293 wc->status = IB_WC_WR_FLUSH_ERR; 4294 wc->vendor_err = 0; 4295 wc->wr_id = wr_id; 4296 wc->byte_len = 0; 4297 wc->src_qp = qp->id; 4298 wc->qp = &qp->ibqp; 4299 wc->wr_id = wr_id; 4300 } else { 4301 __process_resp_one(dev, qp, cq, wc, resp, wr_id); 4302 } 4303 atomic_inc(&srq->hw_srq.wr_cons_cnt); 4304 4305 return 1; 4306 } 4307 static int process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp, 4308 struct qedr_cq *cq, struct ib_wc *wc, 4309 struct rdma_cqe_responder *resp) 4310 { 4311 u64 wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id; 4312 4313 __process_resp_one(dev, qp, cq, wc, resp, wr_id); 4314 4315 while (qp->rqe_wr_id[qp->rq.cons].wqe_size--) 4316 qed_chain_consume(&qp->rq.pbl); 4317 qedr_inc_sw_cons(&qp->rq); 4318 4319 return 1; 4320 } 4321 4322 static int process_resp_flush(struct qedr_qp *qp, struct qedr_cq *cq, 4323 int num_entries, struct ib_wc *wc, u16 hw_cons) 4324 { 4325 u16 cnt = 0; 4326 4327 while (num_entries && qp->rq.wqe_cons != hw_cons) { 4328 /* fill WC */ 4329 wc->status = IB_WC_WR_FLUSH_ERR; 4330 wc->vendor_err = 0; 4331 wc->wc_flags = 0; 4332 wc->src_qp = qp->id; 4333 wc->byte_len = 0; 4334 wc->wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id; 4335 wc->qp = &qp->ibqp; 4336 num_entries--; 4337 wc++; 4338 cnt++; 4339 while (qp->rqe_wr_id[qp->rq.cons].wqe_size--) 4340 qed_chain_consume(&qp->rq.pbl); 4341 qedr_inc_sw_cons(&qp->rq); 4342 } 4343 4344 return cnt; 4345 } 4346 4347 static void try_consume_resp_cqe(struct qedr_cq *cq, struct qedr_qp *qp, 4348 struct rdma_cqe_responder *resp, int *update) 4349 { 4350 if (le16_to_cpu(resp->rq_cons_or_srq_id) == qp->rq.wqe_cons) { 4351 consume_cqe(cq); 4352 *update |= 1; 4353 } 4354 } 4355 4356 static int qedr_poll_cq_resp_srq(struct qedr_dev *dev, struct qedr_qp *qp, 4357 struct qedr_cq *cq, int num_entries, 4358 struct ib_wc *wc, 4359 struct rdma_cqe_responder *resp) 4360 { 4361 int cnt; 4362 4363 cnt = process_resp_one_srq(dev, qp, cq, wc, resp); 4364 consume_cqe(cq); 4365 4366 return cnt; 4367 } 4368 4369 static int qedr_poll_cq_resp(struct qedr_dev *dev, struct qedr_qp *qp, 4370 struct qedr_cq *cq, int num_entries, 4371 struct ib_wc *wc, struct rdma_cqe_responder *resp, 4372 int *update) 4373 { 4374 int cnt; 4375 4376 if (resp->status == RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR) { 4377 cnt = process_resp_flush(qp, cq, num_entries, wc, 4378 resp->rq_cons_or_srq_id); 4379 try_consume_resp_cqe(cq, qp, resp, update); 4380 } else { 4381 cnt = process_resp_one(dev, qp, cq, wc, resp); 4382 consume_cqe(cq); 4383 *update |= 1; 4384 } 4385 4386 return cnt; 4387 } 4388 4389 static void try_consume_req_cqe(struct qedr_cq *cq, struct qedr_qp *qp, 4390 struct rdma_cqe_requester *req, int *update) 4391 { 4392 if (le16_to_cpu(req->sq_cons) == qp->sq.wqe_cons) { 4393 consume_cqe(cq); 4394 *update |= 1; 4395 } 4396 } 4397 4398 int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 4399 { 4400 struct qedr_dev *dev = get_qedr_dev(ibcq->device); 4401 struct qedr_cq *cq = get_qedr_cq(ibcq); 4402 union rdma_cqe *cqe; 4403 u32 old_cons, new_cons; 4404 unsigned long flags; 4405 int update = 0; 4406 int done = 0; 4407 4408 if (cq->destroyed) { 4409 DP_ERR(dev, 4410 "warning: poll was invoked after destroy for cq %p (icid=%d)\n", 4411 cq, cq->icid); 4412 return 0; 4413 } 4414 4415 if (cq->cq_type == QEDR_CQ_TYPE_GSI) 4416 return qedr_gsi_poll_cq(ibcq, num_entries, wc); 4417 4418 spin_lock_irqsave(&cq->cq_lock, flags); 4419 cqe = cq->latest_cqe; 4420 old_cons = qed_chain_get_cons_idx_u32(&cq->pbl); 4421 while (num_entries && is_valid_cqe(cq, cqe)) { 4422 struct qedr_qp *qp; 4423 int cnt = 0; 4424 4425 /* prevent speculative reads of any field of CQE */ 4426 rmb(); 4427 4428 qp = cqe_get_qp(cqe); 4429 if (!qp) { 4430 WARN(1, "Error: CQE QP pointer is NULL. CQE=%p\n", cqe); 4431 break; 4432 } 4433 4434 wc->qp = &qp->ibqp; 4435 4436 switch (cqe_get_type(cqe)) { 4437 case RDMA_CQE_TYPE_REQUESTER: 4438 cnt = qedr_poll_cq_req(dev, qp, cq, num_entries, wc, 4439 &cqe->req); 4440 try_consume_req_cqe(cq, qp, &cqe->req, &update); 4441 break; 4442 case RDMA_CQE_TYPE_RESPONDER_RQ: 4443 cnt = qedr_poll_cq_resp(dev, qp, cq, num_entries, wc, 4444 &cqe->resp, &update); 4445 break; 4446 case RDMA_CQE_TYPE_RESPONDER_SRQ: 4447 cnt = qedr_poll_cq_resp_srq(dev, qp, cq, num_entries, 4448 wc, &cqe->resp); 4449 update = 1; 4450 break; 4451 case RDMA_CQE_TYPE_INVALID: 4452 default: 4453 DP_ERR(dev, "Error: invalid CQE type = %d\n", 4454 cqe_get_type(cqe)); 4455 } 4456 num_entries -= cnt; 4457 wc += cnt; 4458 done += cnt; 4459 4460 cqe = get_cqe(cq); 4461 } 4462 new_cons = qed_chain_get_cons_idx_u32(&cq->pbl); 4463 4464 cq->cq_cons += new_cons - old_cons; 4465 4466 if (update) 4467 /* doorbell notifies abount latest VALID entry, 4468 * but chain already point to the next INVALID one 4469 */ 4470 doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags); 4471 4472 spin_unlock_irqrestore(&cq->cq_lock, flags); 4473 return done; 4474 } 4475 4476 int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags, 4477 u32 port_num, const struct ib_wc *in_wc, 4478 const struct ib_grh *in_grh, const struct ib_mad *in, 4479 struct ib_mad *out_mad, size_t *out_mad_size, 4480 u16 *out_mad_pkey_index) 4481 { 4482 return IB_MAD_RESULT_SUCCESS; 4483 } 4484