1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* Copyright (c) 2015 - 2021 Intel Corporation */ 3 #include "main.h" 4 5 /** 6 * irdma_query_device - get device attributes 7 * @ibdev: device pointer from stack 8 * @props: returning device attributes 9 * @udata: user data 10 */ 11 static int irdma_query_device(struct ib_device *ibdev, 12 struct ib_device_attr *props, 13 struct ib_udata *udata) 14 { 15 struct irdma_device *iwdev = to_iwdev(ibdev); 16 struct irdma_pci_f *rf = iwdev->rf; 17 struct pci_dev *pcidev = iwdev->rf->pcidev; 18 struct irdma_hw_attrs *hw_attrs = &rf->sc_dev.hw_attrs; 19 20 if (udata->inlen || udata->outlen) 21 return -EINVAL; 22 23 memset(props, 0, sizeof(*props)); 24 addrconf_addr_eui48((u8 *)&props->sys_image_guid, 25 iwdev->netdev->dev_addr); 26 props->fw_ver = (u64)irdma_fw_major_ver(&rf->sc_dev) << 32 | 27 irdma_fw_minor_ver(&rf->sc_dev); 28 props->device_cap_flags = IB_DEVICE_MEM_WINDOW | 29 IB_DEVICE_MEM_MGT_EXTENSIONS; 30 props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY; 31 props->vendor_id = pcidev->vendor; 32 props->vendor_part_id = pcidev->device; 33 34 props->hw_ver = rf->pcidev->revision; 35 props->page_size_cap = hw_attrs->page_size_cap; 36 props->max_mr_size = hw_attrs->max_mr_size; 37 props->max_qp = rf->max_qp - rf->used_qps; 38 props->max_qp_wr = hw_attrs->max_qp_wr; 39 props->max_send_sge = hw_attrs->uk_attrs.max_hw_wq_frags; 40 props->max_recv_sge = hw_attrs->uk_attrs.max_hw_wq_frags; 41 props->max_cq = rf->max_cq - rf->used_cqs; 42 props->max_cqe = rf->max_cqe - 1; 43 props->max_mr = rf->max_mr - rf->used_mrs; 44 if (hw_attrs->uk_attrs.hw_rev >= IRDMA_GEN_3) 45 props->max_mw = props->max_mr; 46 props->max_pd = rf->max_pd - rf->used_pds; 47 props->max_sge_rd = hw_attrs->uk_attrs.max_hw_read_sges; 48 props->max_qp_rd_atom = hw_attrs->max_hw_ird; 49 props->max_qp_init_rd_atom = hw_attrs->max_hw_ord; 50 if (rdma_protocol_roce(ibdev, 1)) { 51 props->device_cap_flags |= IB_DEVICE_RC_RNR_NAK_GEN; 52 props->max_pkeys = IRDMA_PKEY_TBL_SZ; 53 } 54 55 props->max_ah = rf->max_ah; 56 props->max_mcast_grp = rf->max_mcg; 57 props->max_mcast_qp_attach = IRDMA_MAX_MGS_PER_CTX; 58 props->max_total_mcast_qp_attach = rf->max_qp * IRDMA_MAX_MGS_PER_CTX; 59 props->max_fast_reg_page_list_len = IRDMA_MAX_PAGES_PER_FMR; 60 props->max_srq = rf->max_srq - rf->used_srqs; 61 props->max_srq_wr = IRDMA_MAX_SRQ_WRS; 62 props->max_srq_sge = hw_attrs->uk_attrs.max_hw_wq_frags; 63 if (hw_attrs->uk_attrs.feature_flags & IRDMA_FEATURE_ATOMIC_OPS) 64 props->atomic_cap = IB_ATOMIC_HCA; 65 else 66 props->atomic_cap = IB_ATOMIC_NONE; 67 props->masked_atomic_cap = props->atomic_cap; 68 if (hw_attrs->uk_attrs.hw_rev >= IRDMA_GEN_3) { 69 #define HCA_CORE_CLOCK_KHZ 1000000UL 70 props->timestamp_mask = GENMASK(31, 0); 71 props->hca_core_clock = HCA_CORE_CLOCK_KHZ; 72 } 73 if (hw_attrs->uk_attrs.hw_rev >= IRDMA_GEN_3) 74 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 75 76 return 0; 77 } 78 79 /** 80 * irdma_query_port - get port attributes 81 * @ibdev: device pointer from stack 82 * @port: port number for query 83 * @props: returning device attributes 84 */ 85 static int irdma_query_port(struct ib_device *ibdev, u32 port, 86 struct ib_port_attr *props) 87 { 88 struct irdma_device *iwdev = to_iwdev(ibdev); 89 struct net_device *netdev = iwdev->netdev; 90 91 /* no need to zero out pros here. done by caller */ 92 93 props->max_mtu = IB_MTU_4096; 94 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu); 95 props->lid = 1; 96 props->lmc = 0; 97 props->sm_lid = 0; 98 props->sm_sl = 0; 99 if (netif_carrier_ok(netdev) && netif_running(netdev)) { 100 props->state = IB_PORT_ACTIVE; 101 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 102 } else { 103 props->state = IB_PORT_DOWN; 104 props->phys_state = IB_PORT_PHYS_STATE_DISABLED; 105 } 106 107 ib_get_eth_speed(ibdev, port, &props->active_speed, 108 &props->active_width); 109 110 if (rdma_protocol_roce(ibdev, 1)) { 111 props->gid_tbl_len = 32; 112 props->ip_gids = true; 113 props->pkey_tbl_len = IRDMA_PKEY_TBL_SZ; 114 } else { 115 props->gid_tbl_len = 1; 116 } 117 props->qkey_viol_cntr = 0; 118 props->port_cap_flags |= IB_PORT_CM_SUP | IB_PORT_REINIT_SUP; 119 props->max_msg_sz = iwdev->rf->sc_dev.hw_attrs.max_hw_outbound_msg_size; 120 121 return 0; 122 } 123 124 /** 125 * irdma_disassociate_ucontext - Disassociate user context 126 * @context: ib user context 127 */ 128 static void irdma_disassociate_ucontext(struct ib_ucontext *context) 129 { 130 } 131 132 static int irdma_mmap_legacy(struct irdma_ucontext *ucontext, 133 struct vm_area_struct *vma) 134 { 135 u64 pfn; 136 137 if (vma->vm_pgoff || vma->vm_end - vma->vm_start != PAGE_SIZE) 138 return -EINVAL; 139 140 vma->vm_private_data = ucontext; 141 pfn = ((uintptr_t)ucontext->iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET] + 142 pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT; 143 144 return rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn, PAGE_SIZE, 145 pgprot_noncached(vma->vm_page_prot), NULL); 146 } 147 148 static void irdma_mmap_free(struct rdma_user_mmap_entry *rdma_entry) 149 { 150 struct irdma_user_mmap_entry *entry = to_irdma_mmap_entry(rdma_entry); 151 152 kfree(entry); 153 } 154 155 static struct rdma_user_mmap_entry* 156 irdma_user_mmap_entry_insert(struct irdma_ucontext *ucontext, u64 bar_offset, 157 enum irdma_mmap_flag mmap_flag, u64 *mmap_offset) 158 { 159 struct irdma_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL); 160 int ret; 161 162 if (!entry) 163 return NULL; 164 165 entry->bar_offset = bar_offset; 166 entry->mmap_flag = mmap_flag; 167 168 ret = rdma_user_mmap_entry_insert(&ucontext->ibucontext, 169 &entry->rdma_entry, PAGE_SIZE); 170 if (ret) { 171 kfree(entry); 172 return NULL; 173 } 174 *mmap_offset = rdma_user_mmap_get_offset(&entry->rdma_entry); 175 176 return &entry->rdma_entry; 177 } 178 179 /** 180 * irdma_mmap - user memory map 181 * @context: context created during alloc 182 * @vma: kernel info for user memory map 183 */ 184 static int irdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 185 { 186 struct rdma_user_mmap_entry *rdma_entry; 187 struct irdma_user_mmap_entry *entry; 188 struct irdma_ucontext *ucontext; 189 u64 pfn; 190 int ret; 191 192 ucontext = to_ucontext(context); 193 194 /* Legacy support for libi40iw with hard-coded mmap key */ 195 if (ucontext->legacy_mode) 196 return irdma_mmap_legacy(ucontext, vma); 197 198 rdma_entry = rdma_user_mmap_entry_get(&ucontext->ibucontext, vma); 199 if (!rdma_entry) { 200 ibdev_dbg(&ucontext->iwdev->ibdev, 201 "VERBS: pgoff[0x%lx] does not have valid entry\n", 202 vma->vm_pgoff); 203 return -EINVAL; 204 } 205 206 entry = to_irdma_mmap_entry(rdma_entry); 207 ibdev_dbg(&ucontext->iwdev->ibdev, 208 "VERBS: bar_offset [0x%llx] mmap_flag [%d]\n", 209 entry->bar_offset, entry->mmap_flag); 210 211 pfn = (entry->bar_offset + 212 pci_resource_start(ucontext->iwdev->rf->pcidev, 0)) >> PAGE_SHIFT; 213 214 switch (entry->mmap_flag) { 215 case IRDMA_MMAP_IO_NC: 216 ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE, 217 pgprot_noncached(vma->vm_page_prot), 218 rdma_entry); 219 break; 220 case IRDMA_MMAP_IO_WC: 221 ret = rdma_user_mmap_io(context, vma, pfn, PAGE_SIZE, 222 pgprot_writecombine(vma->vm_page_prot), 223 rdma_entry); 224 break; 225 default: 226 ret = -EINVAL; 227 } 228 229 if (ret) 230 ibdev_dbg(&ucontext->iwdev->ibdev, 231 "VERBS: bar_offset [0x%llx] mmap_flag[%d] err[%d]\n", 232 entry->bar_offset, entry->mmap_flag, ret); 233 rdma_user_mmap_entry_put(rdma_entry); 234 235 return ret; 236 } 237 238 /** 239 * irdma_alloc_push_page - allocate a push page for qp 240 * @iwqp: qp pointer 241 */ 242 static void irdma_alloc_push_page(struct irdma_qp *iwqp) 243 { 244 struct irdma_cqp_request *cqp_request; 245 struct cqp_cmds_info *cqp_info; 246 struct irdma_device *iwdev = iwqp->iwdev; 247 struct irdma_sc_qp *qp = &iwqp->sc_qp; 248 int status; 249 250 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 251 if (!cqp_request) 252 return; 253 254 cqp_info = &cqp_request->info; 255 cqp_info->cqp_cmd = IRDMA_OP_MANAGE_PUSH_PAGE; 256 cqp_info->post_sq = 1; 257 cqp_info->in.u.manage_push_page.info.push_idx = 0; 258 cqp_info->in.u.manage_push_page.info.qs_handle = 259 qp->vsi->qos[qp->user_pri].qs_handle; 260 cqp_info->in.u.manage_push_page.info.free_page = 0; 261 cqp_info->in.u.manage_push_page.info.push_page_type = 0; 262 cqp_info->in.u.manage_push_page.cqp = &iwdev->rf->cqp.sc_cqp; 263 cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request; 264 265 status = irdma_handle_cqp_op(iwdev->rf, cqp_request); 266 if (!status && cqp_request->compl_info.op_ret_val < 267 iwdev->rf->sc_dev.hw_attrs.max_hw_device_pages) { 268 qp->push_idx = cqp_request->compl_info.op_ret_val; 269 qp->push_offset = 0; 270 } 271 272 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 273 } 274 275 /** 276 * irdma_alloc_ucontext - Allocate the user context data structure 277 * @uctx: uverbs context pointer 278 * @udata: user data 279 * 280 * This keeps track of all objects associated with a particular 281 * user-mode client. 282 */ 283 static int irdma_alloc_ucontext(struct ib_ucontext *uctx, 284 struct ib_udata *udata) 285 { 286 #define IRDMA_ALLOC_UCTX_MIN_REQ_LEN offsetofend(struct irdma_alloc_ucontext_req, rsvd8) 287 #define IRDMA_ALLOC_UCTX_MIN_RESP_LEN offsetofend(struct irdma_alloc_ucontext_resp, rsvd) 288 struct ib_device *ibdev = uctx->device; 289 struct irdma_device *iwdev = to_iwdev(ibdev); 290 struct irdma_alloc_ucontext_req req = {}; 291 struct irdma_alloc_ucontext_resp uresp = {}; 292 struct irdma_ucontext *ucontext = to_ucontext(uctx); 293 struct irdma_uk_attrs *uk_attrs = &iwdev->rf->sc_dev.hw_attrs.uk_attrs; 294 295 if (udata->inlen < IRDMA_ALLOC_UCTX_MIN_REQ_LEN || 296 udata->outlen < IRDMA_ALLOC_UCTX_MIN_RESP_LEN) 297 return -EINVAL; 298 299 if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen))) 300 return -EINVAL; 301 302 if (req.userspace_ver < 4 || req.userspace_ver > IRDMA_ABI_VER) 303 goto ver_error; 304 305 ucontext->iwdev = iwdev; 306 ucontext->abi_ver = req.userspace_ver; 307 308 if (!(req.comp_mask & IRDMA_SUPPORT_WQE_FORMAT_V2) && 309 uk_attrs->hw_rev >= IRDMA_GEN_3) 310 return -EOPNOTSUPP; 311 312 if (req.comp_mask & IRDMA_ALLOC_UCTX_USE_RAW_ATTR) 313 ucontext->use_raw_attrs = true; 314 315 /* GEN_1 legacy support with libi40iw */ 316 if (udata->outlen == IRDMA_ALLOC_UCTX_MIN_RESP_LEN) { 317 if (uk_attrs->hw_rev != IRDMA_GEN_1) 318 return -EOPNOTSUPP; 319 320 ucontext->legacy_mode = true; 321 uresp.max_qps = iwdev->rf->max_qp; 322 uresp.max_pds = iwdev->rf->sc_dev.hw_attrs.max_hw_pds; 323 uresp.wq_size = iwdev->rf->sc_dev.hw_attrs.max_qp_wr * 2; 324 uresp.kernel_ver = req.userspace_ver; 325 if (ib_copy_to_udata(udata, &uresp, 326 min(sizeof(uresp), udata->outlen))) 327 return -EFAULT; 328 } else { 329 u64 bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET]; 330 331 ucontext->db_mmap_entry = 332 irdma_user_mmap_entry_insert(ucontext, bar_off, 333 IRDMA_MMAP_IO_NC, 334 &uresp.db_mmap_key); 335 if (!ucontext->db_mmap_entry) 336 return -ENOMEM; 337 338 uresp.kernel_ver = IRDMA_ABI_VER; 339 uresp.feature_flags = uk_attrs->feature_flags; 340 uresp.max_hw_wq_frags = uk_attrs->max_hw_wq_frags; 341 uresp.max_hw_read_sges = uk_attrs->max_hw_read_sges; 342 uresp.max_hw_inline = uk_attrs->max_hw_inline; 343 uresp.max_hw_rq_quanta = uk_attrs->max_hw_rq_quanta; 344 uresp.max_hw_wq_quanta = uk_attrs->max_hw_wq_quanta; 345 uresp.max_hw_sq_chunk = uk_attrs->max_hw_sq_chunk; 346 uresp.max_hw_cq_size = uk_attrs->max_hw_cq_size; 347 uresp.min_hw_cq_size = uk_attrs->min_hw_cq_size; 348 uresp.hw_rev = uk_attrs->hw_rev; 349 uresp.comp_mask |= IRDMA_ALLOC_UCTX_USE_RAW_ATTR; 350 uresp.min_hw_wq_size = uk_attrs->min_hw_wq_size; 351 uresp.comp_mask |= IRDMA_ALLOC_UCTX_MIN_HW_WQ_SIZE; 352 uresp.max_hw_srq_quanta = uk_attrs->max_hw_srq_quanta; 353 uresp.comp_mask |= IRDMA_ALLOC_UCTX_MAX_HW_SRQ_QUANTA; 354 if (ib_copy_to_udata(udata, &uresp, 355 min(sizeof(uresp), udata->outlen))) { 356 rdma_user_mmap_entry_remove(ucontext->db_mmap_entry); 357 return -EFAULT; 358 } 359 } 360 361 INIT_LIST_HEAD(&ucontext->cq_reg_mem_list); 362 spin_lock_init(&ucontext->cq_reg_mem_list_lock); 363 INIT_LIST_HEAD(&ucontext->qp_reg_mem_list); 364 spin_lock_init(&ucontext->qp_reg_mem_list_lock); 365 INIT_LIST_HEAD(&ucontext->srq_reg_mem_list); 366 spin_lock_init(&ucontext->srq_reg_mem_list_lock); 367 368 return 0; 369 370 ver_error: 371 ibdev_err(&iwdev->ibdev, 372 "Invalid userspace driver version detected. Detected version %d, should be %d\n", 373 req.userspace_ver, IRDMA_ABI_VER); 374 return -EINVAL; 375 } 376 377 /** 378 * irdma_dealloc_ucontext - deallocate the user context data structure 379 * @context: user context created during alloc 380 */ 381 static void irdma_dealloc_ucontext(struct ib_ucontext *context) 382 { 383 struct irdma_ucontext *ucontext = to_ucontext(context); 384 385 rdma_user_mmap_entry_remove(ucontext->db_mmap_entry); 386 } 387 388 /** 389 * irdma_alloc_pd - allocate protection domain 390 * @pd: PD pointer 391 * @udata: user data 392 */ 393 static int irdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata) 394 { 395 #define IRDMA_ALLOC_PD_MIN_RESP_LEN offsetofend(struct irdma_alloc_pd_resp, rsvd) 396 struct irdma_pd *iwpd = to_iwpd(pd); 397 struct irdma_device *iwdev = to_iwdev(pd->device); 398 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 399 struct irdma_pci_f *rf = iwdev->rf; 400 struct irdma_alloc_pd_resp uresp = {}; 401 struct irdma_sc_pd *sc_pd; 402 u32 pd_id = 0; 403 int err; 404 405 if (udata && udata->outlen < IRDMA_ALLOC_PD_MIN_RESP_LEN) 406 return -EINVAL; 407 408 err = irdma_alloc_rsrc(rf, rf->allocated_pds, rf->max_pd, &pd_id, 409 &rf->next_pd); 410 if (err) 411 return err; 412 413 sc_pd = &iwpd->sc_pd; 414 if (udata) { 415 struct irdma_ucontext *ucontext = 416 rdma_udata_to_drv_context(udata, struct irdma_ucontext, 417 ibucontext); 418 irdma_sc_pd_init(dev, sc_pd, pd_id, ucontext->abi_ver); 419 uresp.pd_id = pd_id; 420 if (ib_copy_to_udata(udata, &uresp, 421 min(sizeof(uresp), udata->outlen))) { 422 err = -EFAULT; 423 goto error; 424 } 425 } else { 426 irdma_sc_pd_init(dev, sc_pd, pd_id, IRDMA_ABI_VER); 427 } 428 429 return 0; 430 error: 431 irdma_free_rsrc(rf, rf->allocated_pds, pd_id); 432 433 return err; 434 } 435 436 /** 437 * irdma_dealloc_pd - deallocate pd 438 * @ibpd: ptr of pd to be deallocated 439 * @udata: user data 440 */ 441 static int irdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 442 { 443 struct irdma_pd *iwpd = to_iwpd(ibpd); 444 struct irdma_device *iwdev = to_iwdev(ibpd->device); 445 446 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_pds, iwpd->sc_pd.pd_id); 447 448 return 0; 449 } 450 451 /** 452 * irdma_get_pbl - Retrieve pbl from a list given a virtual 453 * address 454 * @va: user virtual address 455 * @pbl_list: pbl list to search in (QP's or CQ's) 456 */ 457 static struct irdma_pbl *irdma_get_pbl(unsigned long va, 458 struct list_head *pbl_list) 459 { 460 struct irdma_pbl *iwpbl; 461 462 list_for_each_entry (iwpbl, pbl_list, list) { 463 if (iwpbl->user_base == va) { 464 list_del(&iwpbl->list); 465 iwpbl->on_list = false; 466 return iwpbl; 467 } 468 } 469 470 return NULL; 471 } 472 473 /** 474 * irdma_clean_cqes - clean cq entries for qp 475 * @iwqp: qp ptr (user or kernel) 476 * @iwcq: cq ptr 477 */ 478 static void irdma_clean_cqes(struct irdma_qp *iwqp, struct irdma_cq *iwcq) 479 { 480 struct irdma_cq_uk *ukcq = &iwcq->sc_cq.cq_uk; 481 unsigned long flags; 482 483 spin_lock_irqsave(&iwcq->lock, flags); 484 irdma_uk_clean_cq(&iwqp->sc_qp.qp_uk, ukcq); 485 spin_unlock_irqrestore(&iwcq->lock, flags); 486 } 487 488 static void irdma_remove_push_mmap_entries(struct irdma_qp *iwqp) 489 { 490 if (iwqp->push_db_mmap_entry) { 491 rdma_user_mmap_entry_remove(iwqp->push_db_mmap_entry); 492 iwqp->push_db_mmap_entry = NULL; 493 } 494 if (iwqp->push_wqe_mmap_entry) { 495 rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry); 496 iwqp->push_wqe_mmap_entry = NULL; 497 } 498 } 499 500 static int irdma_setup_push_mmap_entries(struct irdma_ucontext *ucontext, 501 struct irdma_qp *iwqp, 502 u64 *push_wqe_mmap_key, 503 u64 *push_db_mmap_key) 504 { 505 struct irdma_device *iwdev = ucontext->iwdev; 506 u64 rsvd, bar_off; 507 508 rsvd = IRDMA_PF_BAR_RSVD; 509 bar_off = (uintptr_t)iwdev->rf->sc_dev.hw_regs[IRDMA_DB_ADDR_OFFSET]; 510 /* skip over db page */ 511 bar_off += IRDMA_HW_PAGE_SIZE; 512 /* push wqe page */ 513 bar_off += rsvd + iwqp->sc_qp.push_idx * IRDMA_HW_PAGE_SIZE; 514 iwqp->push_wqe_mmap_entry = irdma_user_mmap_entry_insert(ucontext, 515 bar_off, IRDMA_MMAP_IO_WC, 516 push_wqe_mmap_key); 517 if (!iwqp->push_wqe_mmap_entry) 518 return -ENOMEM; 519 520 /* push doorbell page */ 521 bar_off += IRDMA_HW_PAGE_SIZE; 522 iwqp->push_db_mmap_entry = irdma_user_mmap_entry_insert(ucontext, 523 bar_off, IRDMA_MMAP_IO_NC, 524 push_db_mmap_key); 525 if (!iwqp->push_db_mmap_entry) { 526 rdma_user_mmap_entry_remove(iwqp->push_wqe_mmap_entry); 527 return -ENOMEM; 528 } 529 530 return 0; 531 } 532 533 /** 534 * irdma_destroy_qp - destroy qp 535 * @ibqp: qp's ib pointer also to get to device's qp address 536 * @udata: user data 537 */ 538 static int irdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) 539 { 540 struct irdma_qp *iwqp = to_iwqp(ibqp); 541 struct irdma_device *iwdev = iwqp->iwdev; 542 543 iwqp->sc_qp.qp_uk.destroy_pending = true; 544 545 if (iwqp->iwarp_state >= IRDMA_QP_STATE_IDLE) 546 irdma_modify_qp_to_err(&iwqp->sc_qp); 547 548 if (!iwqp->user_mode) 549 cancel_delayed_work_sync(&iwqp->dwork_flush); 550 551 if (!iwqp->user_mode) { 552 if (iwqp->iwscq) { 553 irdma_clean_cqes(iwqp, iwqp->iwscq); 554 if (iwqp->iwrcq != iwqp->iwscq) 555 irdma_clean_cqes(iwqp, iwqp->iwrcq); 556 } 557 } 558 559 irdma_qp_rem_ref(&iwqp->ibqp); 560 wait_for_completion(&iwqp->free_qp); 561 irdma_free_lsmm_rsrc(iwqp); 562 irdma_cqp_qp_destroy_cmd(&iwdev->rf->sc_dev, &iwqp->sc_qp); 563 564 irdma_remove_push_mmap_entries(iwqp); 565 566 if (iwqp->sc_qp.qp_uk.qp_id == 1) 567 iwdev->rf->hwqp1_rsvd = false; 568 irdma_free_qp_rsrc(iwqp); 569 570 return 0; 571 } 572 573 /** 574 * irdma_setup_virt_qp - setup for allocation of virtual qp 575 * @iwdev: irdma device 576 * @iwqp: qp ptr 577 * @init_info: initialize info to return 578 */ 579 static void irdma_setup_virt_qp(struct irdma_device *iwdev, 580 struct irdma_qp *iwqp, 581 struct irdma_qp_init_info *init_info) 582 { 583 struct irdma_pbl *iwpbl = iwqp->iwpbl; 584 struct irdma_qp_mr *qpmr = &iwpbl->qp_mr; 585 586 iwqp->page = qpmr->sq_page; 587 init_info->shadow_area_pa = qpmr->shadow; 588 if (iwpbl->pbl_allocated) { 589 init_info->virtual_map = true; 590 init_info->sq_pa = qpmr->sq_pbl.idx; 591 /* Need to use contiguous buffer for RQ of QP 592 * in case it is associated with SRQ. 593 */ 594 init_info->rq_pa = init_info->qp_uk_init_info.srq_uk ? 595 qpmr->rq_pa : qpmr->rq_pbl.idx; 596 } else { 597 init_info->sq_pa = qpmr->sq_pbl.addr; 598 init_info->rq_pa = qpmr->rq_pbl.addr; 599 } 600 } 601 602 /** 603 * irdma_setup_umode_qp - setup sq and rq size in user mode qp 604 * @udata: udata 605 * @iwdev: iwarp device 606 * @iwqp: qp ptr (user or kernel) 607 * @info: initialize info to return 608 * @init_attr: Initial QP create attributes 609 */ 610 static int irdma_setup_umode_qp(struct ib_udata *udata, 611 struct irdma_device *iwdev, 612 struct irdma_qp *iwqp, 613 struct irdma_qp_init_info *info, 614 struct ib_qp_init_attr *init_attr) 615 { 616 struct irdma_ucontext *ucontext = rdma_udata_to_drv_context(udata, 617 struct irdma_ucontext, ibucontext); 618 struct irdma_qp_uk_init_info *ukinfo = &info->qp_uk_init_info; 619 struct irdma_create_qp_req req; 620 unsigned long flags; 621 int ret; 622 623 ret = ib_copy_from_udata(&req, udata, 624 min(sizeof(req), udata->inlen)); 625 if (ret) { 626 ibdev_dbg(&iwdev->ibdev, "VERBS: ib_copy_from_data fail\n"); 627 return ret; 628 } 629 630 iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx; 631 iwqp->user_mode = 1; 632 if (req.user_wqe_bufs) { 633 info->qp_uk_init_info.legacy_mode = ucontext->legacy_mode; 634 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); 635 iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs, 636 &ucontext->qp_reg_mem_list); 637 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); 638 639 if (!iwqp->iwpbl) { 640 ret = -ENODATA; 641 ibdev_dbg(&iwdev->ibdev, "VERBS: no pbl info\n"); 642 return ret; 643 } 644 } 645 646 if (!ucontext->use_raw_attrs) { 647 /** 648 * Maintain backward compat with older ABI which passes sq and 649 * rq depth in quanta in cap.max_send_wr and cap.max_recv_wr. 650 * There is no way to compute the correct value of 651 * iwqp->max_send_wr/max_recv_wr in the kernel. 652 */ 653 iwqp->max_send_wr = init_attr->cap.max_send_wr; 654 iwqp->max_recv_wr = init_attr->cap.max_recv_wr; 655 ukinfo->sq_size = init_attr->cap.max_send_wr; 656 ukinfo->rq_size = init_attr->cap.max_recv_wr; 657 irdma_uk_calc_shift_wq(ukinfo, &ukinfo->sq_shift, 658 &ukinfo->rq_shift); 659 } else { 660 ret = irdma_uk_calc_depth_shift_sq(ukinfo, &ukinfo->sq_depth, 661 &ukinfo->sq_shift); 662 if (ret) 663 return ret; 664 665 ret = irdma_uk_calc_depth_shift_rq(ukinfo, &ukinfo->rq_depth, 666 &ukinfo->rq_shift); 667 if (ret) 668 return ret; 669 670 iwqp->max_send_wr = 671 (ukinfo->sq_depth - IRDMA_SQ_RSVD) >> ukinfo->sq_shift; 672 iwqp->max_recv_wr = 673 (ukinfo->rq_depth - IRDMA_RQ_RSVD) >> ukinfo->rq_shift; 674 ukinfo->sq_size = ukinfo->sq_depth >> ukinfo->sq_shift; 675 ukinfo->rq_size = ukinfo->rq_depth >> ukinfo->rq_shift; 676 } 677 678 irdma_setup_virt_qp(iwdev, iwqp, info); 679 680 return 0; 681 } 682 683 /** 684 * irdma_setup_kmode_qp - setup initialization for kernel mode qp 685 * @iwdev: iwarp device 686 * @iwqp: qp ptr (user or kernel) 687 * @info: initialize info to return 688 * @init_attr: Initial QP create attributes 689 */ 690 static int irdma_setup_kmode_qp(struct irdma_device *iwdev, 691 struct irdma_qp *iwqp, 692 struct irdma_qp_init_info *info, 693 struct ib_qp_init_attr *init_attr) 694 { 695 struct irdma_dma_mem *mem = &iwqp->kqp.dma_mem; 696 u32 size; 697 int status; 698 struct irdma_qp_uk_init_info *ukinfo = &info->qp_uk_init_info; 699 700 status = irdma_uk_calc_depth_shift_sq(ukinfo, &ukinfo->sq_depth, 701 &ukinfo->sq_shift); 702 if (status) 703 return status; 704 705 status = irdma_uk_calc_depth_shift_rq(ukinfo, &ukinfo->rq_depth, 706 &ukinfo->rq_shift); 707 if (status) 708 return status; 709 710 iwqp->kqp.sq_wrid_mem = 711 kcalloc(ukinfo->sq_depth, sizeof(*iwqp->kqp.sq_wrid_mem), GFP_KERNEL); 712 if (!iwqp->kqp.sq_wrid_mem) 713 return -ENOMEM; 714 715 iwqp->kqp.rq_wrid_mem = 716 kcalloc(ukinfo->rq_depth, sizeof(*iwqp->kqp.rq_wrid_mem), GFP_KERNEL); 717 718 if (!iwqp->kqp.rq_wrid_mem) { 719 kfree(iwqp->kqp.sq_wrid_mem); 720 iwqp->kqp.sq_wrid_mem = NULL; 721 return -ENOMEM; 722 } 723 724 ukinfo->sq_wrtrk_array = iwqp->kqp.sq_wrid_mem; 725 ukinfo->rq_wrid_array = iwqp->kqp.rq_wrid_mem; 726 727 size = (ukinfo->sq_depth + ukinfo->rq_depth) * IRDMA_QP_WQE_MIN_SIZE; 728 size += (IRDMA_SHADOW_AREA_SIZE << 3); 729 730 mem->size = ALIGN(size, 256); 731 mem->va = dma_alloc_coherent(iwdev->rf->hw.device, mem->size, 732 &mem->pa, GFP_KERNEL); 733 if (!mem->va) { 734 kfree(iwqp->kqp.sq_wrid_mem); 735 iwqp->kqp.sq_wrid_mem = NULL; 736 kfree(iwqp->kqp.rq_wrid_mem); 737 iwqp->kqp.rq_wrid_mem = NULL; 738 return -ENOMEM; 739 } 740 741 ukinfo->sq = mem->va; 742 info->sq_pa = mem->pa; 743 ukinfo->rq = &ukinfo->sq[ukinfo->sq_depth]; 744 info->rq_pa = info->sq_pa + (ukinfo->sq_depth * IRDMA_QP_WQE_MIN_SIZE); 745 ukinfo->shadow_area = ukinfo->rq[ukinfo->rq_depth].elem; 746 info->shadow_area_pa = 747 info->rq_pa + (ukinfo->rq_depth * IRDMA_QP_WQE_MIN_SIZE); 748 ukinfo->sq_size = ukinfo->sq_depth >> ukinfo->sq_shift; 749 ukinfo->rq_size = ukinfo->rq_depth >> ukinfo->rq_shift; 750 ukinfo->qp_id = info->qp_uk_init_info.qp_id; 751 752 iwqp->max_send_wr = (ukinfo->sq_depth - IRDMA_SQ_RSVD) >> ukinfo->sq_shift; 753 iwqp->max_recv_wr = (ukinfo->rq_depth - IRDMA_RQ_RSVD) >> ukinfo->rq_shift; 754 init_attr->cap.max_send_wr = iwqp->max_send_wr; 755 init_attr->cap.max_recv_wr = iwqp->max_recv_wr; 756 757 return 0; 758 } 759 760 static int irdma_cqp_create_qp_cmd(struct irdma_qp *iwqp) 761 { 762 struct irdma_pci_f *rf = iwqp->iwdev->rf; 763 struct irdma_cqp_request *cqp_request; 764 struct cqp_cmds_info *cqp_info; 765 struct irdma_create_qp_info *qp_info; 766 int status; 767 768 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true); 769 if (!cqp_request) 770 return -ENOMEM; 771 772 cqp_info = &cqp_request->info; 773 qp_info = &cqp_request->info.in.u.qp_create.info; 774 memset(qp_info, 0, sizeof(*qp_info)); 775 qp_info->mac_valid = true; 776 qp_info->cq_num_valid = true; 777 qp_info->next_iwarp_state = IRDMA_QP_STATE_IDLE; 778 779 cqp_info->cqp_cmd = IRDMA_OP_QP_CREATE; 780 cqp_info->post_sq = 1; 781 cqp_info->in.u.qp_create.qp = &iwqp->sc_qp; 782 cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request; 783 status = irdma_handle_cqp_op(rf, cqp_request); 784 irdma_put_cqp_request(&rf->cqp, cqp_request); 785 786 return status; 787 } 788 789 static void irdma_roce_fill_and_set_qpctx_info(struct irdma_qp *iwqp, 790 struct irdma_qp_host_ctx_info *ctx_info) 791 { 792 struct irdma_device *iwdev = iwqp->iwdev; 793 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 794 struct irdma_roce_offload_info *roce_info; 795 struct irdma_udp_offload_info *udp_info; 796 797 udp_info = &iwqp->udp_info; 798 udp_info->snd_mss = ib_mtu_enum_to_int(ib_mtu_int_to_enum(iwdev->vsi.mtu)); 799 udp_info->cwnd = iwdev->roce_cwnd; 800 udp_info->rexmit_thresh = 2; 801 udp_info->rnr_nak_thresh = 2; 802 udp_info->src_port = 0xc000; 803 udp_info->dst_port = ROCE_V2_UDP_DPORT; 804 roce_info = &iwqp->roce_info; 805 ether_addr_copy(roce_info->mac_addr, iwdev->netdev->dev_addr); 806 807 if (iwqp->ibqp.qp_type == IB_QPT_GSI && iwqp->ibqp.qp_num != 1) 808 roce_info->is_qp1 = true; 809 roce_info->rd_en = true; 810 roce_info->wr_rdresp_en = true; 811 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_3) 812 roce_info->bind_en = true; 813 roce_info->dcqcn_en = false; 814 roce_info->rtomin = 5; 815 816 roce_info->ack_credits = iwdev->roce_ackcreds; 817 roce_info->ird_size = dev->hw_attrs.max_hw_ird; 818 roce_info->ord_size = dev->hw_attrs.max_hw_ord; 819 820 if (!iwqp->user_mode) { 821 roce_info->priv_mode_en = true; 822 roce_info->fast_reg_en = true; 823 roce_info->udprivcq_en = true; 824 } 825 roce_info->roce_tver = 0; 826 827 ctx_info->roce_info = &iwqp->roce_info; 828 ctx_info->udp_info = &iwqp->udp_info; 829 irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info); 830 } 831 832 static void irdma_iw_fill_and_set_qpctx_info(struct irdma_qp *iwqp, 833 struct irdma_qp_host_ctx_info *ctx_info) 834 { 835 struct irdma_device *iwdev = iwqp->iwdev; 836 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 837 struct irdma_iwarp_offload_info *iwarp_info; 838 839 iwarp_info = &iwqp->iwarp_info; 840 ether_addr_copy(iwarp_info->mac_addr, iwdev->netdev->dev_addr); 841 iwarp_info->rd_en = true; 842 iwarp_info->wr_rdresp_en = true; 843 iwarp_info->ecn_en = true; 844 iwarp_info->rtomin = 5; 845 846 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) 847 iwarp_info->ib_rd_en = true; 848 if (!iwqp->user_mode) { 849 iwarp_info->priv_mode_en = true; 850 iwarp_info->fast_reg_en = true; 851 } 852 iwarp_info->ddp_ver = 1; 853 iwarp_info->rdmap_ver = 1; 854 855 ctx_info->iwarp_info = &iwqp->iwarp_info; 856 ctx_info->iwarp_info_valid = true; 857 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info); 858 ctx_info->iwarp_info_valid = false; 859 } 860 861 static int irdma_validate_qp_attrs(struct ib_qp_init_attr *init_attr, 862 struct irdma_device *iwdev) 863 { 864 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 865 struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs; 866 867 if (init_attr->create_flags) 868 return -EOPNOTSUPP; 869 870 if (init_attr->cap.max_inline_data > uk_attrs->max_hw_inline || 871 init_attr->cap.max_send_sge > uk_attrs->max_hw_wq_frags || 872 init_attr->cap.max_recv_sge > uk_attrs->max_hw_wq_frags || 873 init_attr->cap.max_send_wr > uk_attrs->max_hw_wq_quanta || 874 init_attr->cap.max_recv_wr > uk_attrs->max_hw_rq_quanta) 875 return -EINVAL; 876 877 if (rdma_protocol_roce(&iwdev->ibdev, 1)) { 878 if (init_attr->qp_type != IB_QPT_RC && 879 init_attr->qp_type != IB_QPT_UD && 880 init_attr->qp_type != IB_QPT_GSI) 881 return -EOPNOTSUPP; 882 } else { 883 if (init_attr->qp_type != IB_QPT_RC) 884 return -EOPNOTSUPP; 885 } 886 887 return 0; 888 } 889 890 static void irdma_flush_worker(struct work_struct *work) 891 { 892 struct delayed_work *dwork = to_delayed_work(work); 893 struct irdma_qp *iwqp = container_of(dwork, struct irdma_qp, dwork_flush); 894 895 irdma_generate_flush_completions(iwqp); 896 } 897 898 static int irdma_setup_gsi_qp_rsrc(struct irdma_qp *iwqp, u32 *qp_num) 899 { 900 struct irdma_device *iwdev = iwqp->iwdev; 901 struct irdma_pci_f *rf = iwdev->rf; 902 unsigned long flags; 903 int ret; 904 905 if (rf->rdma_ver <= IRDMA_GEN_2) { 906 *qp_num = 1; 907 return 0; 908 } 909 910 spin_lock_irqsave(&rf->rsrc_lock, flags); 911 if (!rf->hwqp1_rsvd) { 912 *qp_num = 1; 913 rf->hwqp1_rsvd = true; 914 spin_unlock_irqrestore(&rf->rsrc_lock, flags); 915 } else { 916 spin_unlock_irqrestore(&rf->rsrc_lock, flags); 917 ret = irdma_alloc_rsrc(rf, rf->allocated_qps, rf->max_qp, 918 qp_num, &rf->next_qp); 919 if (ret) 920 return ret; 921 } 922 923 ret = irdma_vchnl_req_add_vport(&rf->sc_dev, iwdev->vport_id, *qp_num, 924 (&iwdev->vsi)->qos); 925 if (ret) { 926 if (*qp_num != 1) { 927 irdma_free_rsrc(rf, rf->allocated_qps, *qp_num); 928 } else { 929 spin_lock_irqsave(&rf->rsrc_lock, flags); 930 rf->hwqp1_rsvd = false; 931 spin_unlock_irqrestore(&rf->rsrc_lock, flags); 932 } 933 return ret; 934 } 935 936 return 0; 937 } 938 939 /** 940 * irdma_create_qp - create qp 941 * @ibqp: ptr of qp 942 * @init_attr: attributes for qp 943 * @udata: user data for create qp 944 */ 945 static int irdma_create_qp(struct ib_qp *ibqp, 946 struct ib_qp_init_attr *init_attr, 947 struct ib_udata *udata) 948 { 949 #define IRDMA_CREATE_QP_MIN_REQ_LEN offsetofend(struct irdma_create_qp_req, user_compl_ctx) 950 #define IRDMA_CREATE_QP_MIN_RESP_LEN offsetofend(struct irdma_create_qp_resp, rsvd) 951 struct ib_pd *ibpd = ibqp->pd; 952 struct irdma_pd *iwpd = to_iwpd(ibpd); 953 struct irdma_device *iwdev = to_iwdev(ibpd->device); 954 struct irdma_pci_f *rf = iwdev->rf; 955 struct irdma_qp *iwqp = to_iwqp(ibqp); 956 struct irdma_create_qp_resp uresp = {}; 957 u32 qp_num = 0; 958 int err_code; 959 struct irdma_sc_qp *qp; 960 struct irdma_sc_dev *dev = &rf->sc_dev; 961 struct irdma_uk_attrs *uk_attrs = &dev->hw_attrs.uk_attrs; 962 struct irdma_qp_init_info init_info = {}; 963 struct irdma_qp_host_ctx_info *ctx_info; 964 struct irdma_srq *iwsrq; 965 bool srq_valid = false; 966 u32 srq_id = 0; 967 968 if (init_attr->srq) { 969 iwsrq = to_iwsrq(init_attr->srq); 970 srq_valid = true; 971 srq_id = iwsrq->srq_num; 972 init_attr->cap.max_recv_sge = uk_attrs->max_hw_wq_frags; 973 init_attr->cap.max_recv_wr = 4; 974 init_info.qp_uk_init_info.srq_uk = &iwsrq->sc_srq.srq_uk; 975 } 976 977 err_code = irdma_validate_qp_attrs(init_attr, iwdev); 978 if (err_code) 979 return err_code; 980 981 if (udata && (udata->inlen < IRDMA_CREATE_QP_MIN_REQ_LEN || 982 udata->outlen < IRDMA_CREATE_QP_MIN_RESP_LEN)) 983 return -EINVAL; 984 985 init_info.vsi = &iwdev->vsi; 986 init_info.qp_uk_init_info.uk_attrs = uk_attrs; 987 init_info.qp_uk_init_info.sq_size = init_attr->cap.max_send_wr; 988 init_info.qp_uk_init_info.rq_size = init_attr->cap.max_recv_wr; 989 init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge; 990 init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge; 991 init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data; 992 993 qp = &iwqp->sc_qp; 994 qp->qp_uk.back_qp = iwqp; 995 qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX; 996 997 iwqp->iwdev = iwdev; 998 iwqp->q2_ctx_mem.size = ALIGN(IRDMA_Q2_BUF_SIZE + IRDMA_QP_CTX_SIZE, 999 256); 1000 iwqp->q2_ctx_mem.va = dma_alloc_coherent(dev->hw->device, 1001 iwqp->q2_ctx_mem.size, 1002 &iwqp->q2_ctx_mem.pa, 1003 GFP_KERNEL); 1004 if (!iwqp->q2_ctx_mem.va) 1005 return -ENOMEM; 1006 1007 init_info.q2 = iwqp->q2_ctx_mem.va; 1008 init_info.q2_pa = iwqp->q2_ctx_mem.pa; 1009 init_info.host_ctx = (__le64 *)(init_info.q2 + IRDMA_Q2_BUF_SIZE); 1010 init_info.host_ctx_pa = init_info.q2_pa + IRDMA_Q2_BUF_SIZE; 1011 1012 if (init_attr->qp_type == IB_QPT_GSI) { 1013 err_code = irdma_setup_gsi_qp_rsrc(iwqp, &qp_num); 1014 if (err_code) 1015 goto error; 1016 iwqp->ibqp.qp_num = 1; 1017 } else { 1018 err_code = irdma_alloc_rsrc(rf, rf->allocated_qps, rf->max_qp, 1019 &qp_num, &rf->next_qp); 1020 if (err_code) 1021 goto error; 1022 iwqp->ibqp.qp_num = qp_num; 1023 } 1024 1025 iwqp->iwpd = iwpd; 1026 qp = &iwqp->sc_qp; 1027 iwqp->iwscq = to_iwcq(init_attr->send_cq); 1028 iwqp->iwrcq = to_iwcq(init_attr->recv_cq); 1029 iwqp->host_ctx.va = init_info.host_ctx; 1030 iwqp->host_ctx.pa = init_info.host_ctx_pa; 1031 iwqp->host_ctx.size = IRDMA_QP_CTX_SIZE; 1032 1033 init_info.pd = &iwpd->sc_pd; 1034 init_info.qp_uk_init_info.qp_id = qp_num; 1035 if (!rdma_protocol_roce(&iwdev->ibdev, 1)) 1036 init_info.qp_uk_init_info.first_sq_wq = 1; 1037 iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp; 1038 init_waitqueue_head(&iwqp->waitq); 1039 init_waitqueue_head(&iwqp->mod_qp_waitq); 1040 1041 if (udata) { 1042 init_info.qp_uk_init_info.abi_ver = iwpd->sc_pd.abi_ver; 1043 err_code = irdma_setup_umode_qp(udata, iwdev, iwqp, &init_info, 1044 init_attr); 1045 } else { 1046 INIT_DELAYED_WORK(&iwqp->dwork_flush, irdma_flush_worker); 1047 init_info.qp_uk_init_info.abi_ver = IRDMA_ABI_VER; 1048 err_code = irdma_setup_kmode_qp(iwdev, iwqp, &init_info, init_attr); 1049 } 1050 1051 if (err_code) { 1052 ibdev_dbg(&iwdev->ibdev, "VERBS: setup qp failed\n"); 1053 goto error; 1054 } 1055 1056 if (rdma_protocol_roce(&iwdev->ibdev, 1)) { 1057 if (init_attr->qp_type == IB_QPT_RC) { 1058 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_RC; 1059 init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM | 1060 IRDMA_WRITE_WITH_IMM | 1061 IRDMA_ROCE; 1062 } else { 1063 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_ROCE_UD; 1064 init_info.qp_uk_init_info.qp_caps = IRDMA_SEND_WITH_IMM | 1065 IRDMA_ROCE; 1066 } 1067 } else { 1068 init_info.qp_uk_init_info.type = IRDMA_QP_TYPE_IWARP; 1069 init_info.qp_uk_init_info.qp_caps = IRDMA_WRITE_WITH_IMM; 1070 } 1071 1072 if (dev->hw_attrs.uk_attrs.hw_rev > IRDMA_GEN_1) 1073 init_info.qp_uk_init_info.qp_caps |= IRDMA_PUSH_MODE; 1074 1075 err_code = irdma_sc_qp_init(qp, &init_info); 1076 if (err_code) { 1077 ibdev_dbg(&iwdev->ibdev, "VERBS: qp_init fail\n"); 1078 goto error; 1079 } 1080 1081 ctx_info = &iwqp->ctx_info; 1082 ctx_info->srq_valid = srq_valid; 1083 ctx_info->srq_id = srq_id; 1084 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; 1085 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; 1086 1087 if (rdma_protocol_roce(&iwdev->ibdev, 1)) { 1088 if (dev->ws_add(&iwdev->vsi, 0)) { 1089 irdma_cqp_qp_destroy_cmd(&rf->sc_dev, &iwqp->sc_qp); 1090 err_code = -EINVAL; 1091 goto error; 1092 } 1093 irdma_qp_add_qos(&iwqp->sc_qp); 1094 irdma_roce_fill_and_set_qpctx_info(iwqp, ctx_info); 1095 } else { 1096 irdma_iw_fill_and_set_qpctx_info(iwqp, ctx_info); 1097 } 1098 1099 err_code = irdma_cqp_create_qp_cmd(iwqp); 1100 if (err_code) 1101 goto error; 1102 1103 refcount_set(&iwqp->refcnt, 1); 1104 spin_lock_init(&iwqp->lock); 1105 spin_lock_init(&iwqp->sc_qp.pfpdu.lock); 1106 iwqp->sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; 1107 rf->qp_table[qp_num] = iwqp; 1108 1109 if (udata) { 1110 /* GEN_1 legacy support with libi40iw does not have expanded uresp struct */ 1111 if (udata->outlen < sizeof(uresp)) { 1112 uresp.lsmm = 1; 1113 uresp.push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX_GEN_1; 1114 } else { 1115 if (rdma_protocol_iwarp(&iwdev->ibdev, 1)) 1116 uresp.lsmm = 1; 1117 } 1118 uresp.actual_sq_size = init_info.qp_uk_init_info.sq_size; 1119 uresp.actual_rq_size = init_info.qp_uk_init_info.rq_size; 1120 uresp.qp_id = qp_num; 1121 uresp.qp_caps = qp->qp_uk.qp_caps; 1122 1123 err_code = ib_copy_to_udata(udata, &uresp, 1124 min(sizeof(uresp), udata->outlen)); 1125 if (err_code) { 1126 ibdev_dbg(&iwdev->ibdev, "VERBS: copy_to_udata failed\n"); 1127 irdma_destroy_qp(&iwqp->ibqp, udata); 1128 return err_code; 1129 } 1130 } 1131 1132 init_completion(&iwqp->free_qp); 1133 return 0; 1134 1135 error: 1136 irdma_free_qp_rsrc(iwqp); 1137 return err_code; 1138 } 1139 1140 static int irdma_get_ib_acc_flags(struct irdma_qp *iwqp) 1141 { 1142 int acc_flags = 0; 1143 1144 if (rdma_protocol_roce(iwqp->ibqp.device, 1)) { 1145 if (iwqp->roce_info.wr_rdresp_en) { 1146 acc_flags |= IB_ACCESS_LOCAL_WRITE; 1147 acc_flags |= IB_ACCESS_REMOTE_WRITE; 1148 } 1149 if (iwqp->roce_info.rd_en) 1150 acc_flags |= IB_ACCESS_REMOTE_READ; 1151 if (iwqp->roce_info.bind_en) 1152 acc_flags |= IB_ACCESS_MW_BIND; 1153 if (iwqp->ctx_info.remote_atomics_en) 1154 acc_flags |= IB_ACCESS_REMOTE_ATOMIC; 1155 } else { 1156 if (iwqp->iwarp_info.wr_rdresp_en) { 1157 acc_flags |= IB_ACCESS_LOCAL_WRITE; 1158 acc_flags |= IB_ACCESS_REMOTE_WRITE; 1159 } 1160 if (iwqp->iwarp_info.rd_en) 1161 acc_flags |= IB_ACCESS_REMOTE_READ; 1162 if (iwqp->ctx_info.remote_atomics_en) 1163 acc_flags |= IB_ACCESS_REMOTE_ATOMIC; 1164 } 1165 return acc_flags; 1166 } 1167 1168 /** 1169 * irdma_query_qp - query qp attributes 1170 * @ibqp: qp pointer 1171 * @attr: attributes pointer 1172 * @attr_mask: Not used 1173 * @init_attr: qp attributes to return 1174 */ 1175 static int irdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 1176 int attr_mask, struct ib_qp_init_attr *init_attr) 1177 { 1178 struct irdma_qp *iwqp = to_iwqp(ibqp); 1179 struct irdma_sc_qp *qp = &iwqp->sc_qp; 1180 1181 memset(attr, 0, sizeof(*attr)); 1182 memset(init_attr, 0, sizeof(*init_attr)); 1183 1184 attr->qp_state = iwqp->ibqp_state; 1185 attr->cur_qp_state = iwqp->ibqp_state; 1186 attr->cap.max_send_wr = iwqp->max_send_wr; 1187 attr->cap.max_recv_wr = iwqp->max_recv_wr; 1188 attr->cap.max_inline_data = qp->qp_uk.max_inline_data; 1189 attr->cap.max_send_sge = qp->qp_uk.max_sq_frag_cnt; 1190 attr->cap.max_recv_sge = qp->qp_uk.max_rq_frag_cnt; 1191 attr->qp_access_flags = irdma_get_ib_acc_flags(iwqp); 1192 attr->port_num = 1; 1193 if (rdma_protocol_roce(ibqp->device, 1)) { 1194 attr->path_mtu = ib_mtu_int_to_enum(iwqp->udp_info.snd_mss); 1195 attr->qkey = iwqp->roce_info.qkey; 1196 attr->rq_psn = iwqp->udp_info.epsn; 1197 attr->sq_psn = iwqp->udp_info.psn_nxt; 1198 attr->dest_qp_num = iwqp->roce_info.dest_qp; 1199 attr->pkey_index = iwqp->roce_info.p_key; 1200 attr->retry_cnt = iwqp->udp_info.rexmit_thresh; 1201 attr->rnr_retry = iwqp->udp_info.rnr_nak_thresh; 1202 attr->min_rnr_timer = iwqp->udp_info.min_rnr_timer; 1203 attr->max_rd_atomic = iwqp->roce_info.ord_size; 1204 attr->max_dest_rd_atomic = iwqp->roce_info.ird_size; 1205 } 1206 1207 init_attr->event_handler = iwqp->ibqp.event_handler; 1208 init_attr->qp_context = iwqp->ibqp.qp_context; 1209 init_attr->send_cq = iwqp->ibqp.send_cq; 1210 init_attr->recv_cq = iwqp->ibqp.recv_cq; 1211 init_attr->srq = iwqp->ibqp.srq; 1212 init_attr->cap = attr->cap; 1213 1214 return 0; 1215 } 1216 1217 /** 1218 * irdma_query_pkey - Query partition key 1219 * @ibdev: device pointer from stack 1220 * @port: port number 1221 * @index: index of pkey 1222 * @pkey: pointer to store the pkey 1223 */ 1224 static int irdma_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 1225 u16 *pkey) 1226 { 1227 if (index >= IRDMA_PKEY_TBL_SZ) 1228 return -EINVAL; 1229 1230 *pkey = IRDMA_DEFAULT_PKEY; 1231 return 0; 1232 } 1233 1234 static u8 irdma_roce_get_vlan_prio(const struct ib_gid_attr *attr, u8 prio) 1235 { 1236 struct net_device *ndev; 1237 1238 rcu_read_lock(); 1239 ndev = rcu_dereference(attr->ndev); 1240 if (!ndev) 1241 goto exit; 1242 if (is_vlan_dev(ndev)) { 1243 u16 vlan_qos = vlan_dev_get_egress_qos_mask(ndev, prio); 1244 1245 prio = (vlan_qos & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; 1246 } 1247 exit: 1248 rcu_read_unlock(); 1249 return prio; 1250 } 1251 1252 static int irdma_wait_for_suspend(struct irdma_qp *iwqp) 1253 { 1254 if (!wait_event_timeout(iwqp->iwdev->suspend_wq, 1255 !iwqp->suspend_pending, 1256 msecs_to_jiffies(IRDMA_EVENT_TIMEOUT_MS))) { 1257 iwqp->suspend_pending = false; 1258 ibdev_warn(&iwqp->iwdev->ibdev, 1259 "modify_qp timed out waiting for suspend. qp_id = %d, last_ae = 0x%x\n", 1260 iwqp->ibqp.qp_num, iwqp->last_aeq); 1261 return -EBUSY; 1262 } 1263 1264 return 0; 1265 } 1266 1267 /** 1268 * irdma_modify_qp_roce - modify qp request 1269 * @ibqp: qp's pointer for modify 1270 * @attr: access attributes 1271 * @attr_mask: state mask 1272 * @udata: user data 1273 */ 1274 int irdma_modify_qp_roce(struct ib_qp *ibqp, struct ib_qp_attr *attr, 1275 int attr_mask, struct ib_udata *udata) 1276 { 1277 #define IRDMA_MODIFY_QP_MIN_REQ_LEN offsetofend(struct irdma_modify_qp_req, rq_flush) 1278 #define IRDMA_MODIFY_QP_MIN_RESP_LEN offsetofend(struct irdma_modify_qp_resp, push_valid) 1279 struct irdma_pd *iwpd = to_iwpd(ibqp->pd); 1280 struct irdma_qp *iwqp = to_iwqp(ibqp); 1281 struct irdma_device *iwdev = iwqp->iwdev; 1282 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 1283 struct irdma_qp_host_ctx_info *ctx_info; 1284 struct irdma_roce_offload_info *roce_info; 1285 struct irdma_udp_offload_info *udp_info; 1286 struct irdma_modify_qp_info info = {}; 1287 struct irdma_modify_qp_resp uresp = {}; 1288 struct irdma_modify_qp_req ureq = {}; 1289 unsigned long flags; 1290 u8 issue_modify_qp = 0; 1291 int ret = 0; 1292 1293 ctx_info = &iwqp->ctx_info; 1294 roce_info = &iwqp->roce_info; 1295 udp_info = &iwqp->udp_info; 1296 1297 if (udata) { 1298 /* udata inlen/outlen can be 0 when supporting legacy libi40iw */ 1299 if ((udata->inlen && udata->inlen < IRDMA_MODIFY_QP_MIN_REQ_LEN) || 1300 (udata->outlen && udata->outlen < IRDMA_MODIFY_QP_MIN_RESP_LEN)) 1301 return -EINVAL; 1302 } 1303 1304 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS) 1305 return -EOPNOTSUPP; 1306 1307 if (attr_mask & IB_QP_DEST_QPN) 1308 roce_info->dest_qp = attr->dest_qp_num; 1309 1310 if (attr_mask & IB_QP_PKEY_INDEX) { 1311 ret = irdma_query_pkey(ibqp->device, 0, attr->pkey_index, 1312 &roce_info->p_key); 1313 if (ret) 1314 return ret; 1315 } 1316 1317 if (attr_mask & IB_QP_QKEY) 1318 roce_info->qkey = attr->qkey; 1319 1320 if (attr_mask & IB_QP_PATH_MTU) 1321 udp_info->snd_mss = ib_mtu_enum_to_int(attr->path_mtu); 1322 1323 if (attr_mask & IB_QP_SQ_PSN) { 1324 udp_info->psn_nxt = attr->sq_psn; 1325 udp_info->lsn = 0xffff; 1326 udp_info->psn_una = attr->sq_psn; 1327 udp_info->psn_max = attr->sq_psn; 1328 } 1329 1330 if (attr_mask & IB_QP_RQ_PSN) 1331 udp_info->epsn = attr->rq_psn; 1332 1333 if (attr_mask & IB_QP_RNR_RETRY) 1334 udp_info->rnr_nak_thresh = attr->rnr_retry; 1335 1336 if (attr_mask & IB_QP_MIN_RNR_TIMER && 1337 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_3) 1338 udp_info->min_rnr_timer = attr->min_rnr_timer; 1339 1340 if (attr_mask & IB_QP_RETRY_CNT) 1341 udp_info->rexmit_thresh = attr->retry_cnt; 1342 1343 ctx_info->roce_info->pd_id = iwpd->sc_pd.pd_id; 1344 1345 if (attr_mask & IB_QP_AV) { 1346 struct irdma_av *av = &iwqp->roce_ah.av; 1347 const struct ib_gid_attr *sgid_attr = 1348 attr->ah_attr.grh.sgid_attr; 1349 u16 vlan_id = VLAN_N_VID; 1350 u32 local_ip[4]; 1351 1352 memset(&iwqp->roce_ah, 0, sizeof(iwqp->roce_ah)); 1353 if (attr->ah_attr.ah_flags & IB_AH_GRH) { 1354 udp_info->ttl = attr->ah_attr.grh.hop_limit; 1355 udp_info->flow_label = attr->ah_attr.grh.flow_label; 1356 udp_info->tos = attr->ah_attr.grh.traffic_class; 1357 udp_info->src_port = 1358 rdma_get_udp_sport(udp_info->flow_label, 1359 ibqp->qp_num, 1360 roce_info->dest_qp); 1361 irdma_qp_rem_qos(&iwqp->sc_qp); 1362 dev->ws_remove(iwqp->sc_qp.vsi, ctx_info->user_pri); 1363 if (iwqp->sc_qp.vsi->dscp_mode) 1364 ctx_info->user_pri = 1365 iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(udp_info->tos)]; 1366 else 1367 ctx_info->user_pri = rt_tos2priority(udp_info->tos); 1368 } 1369 ret = rdma_read_gid_l2_fields(sgid_attr, &vlan_id, 1370 ctx_info->roce_info->mac_addr); 1371 if (ret) 1372 return ret; 1373 ctx_info->user_pri = irdma_roce_get_vlan_prio(sgid_attr, 1374 ctx_info->user_pri); 1375 if (dev->ws_add(iwqp->sc_qp.vsi, ctx_info->user_pri)) 1376 return -ENOMEM; 1377 iwqp->sc_qp.user_pri = ctx_info->user_pri; 1378 irdma_qp_add_qos(&iwqp->sc_qp); 1379 1380 if (vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode) 1381 vlan_id = 0; 1382 if (vlan_id < VLAN_N_VID) { 1383 udp_info->insert_vlan_tag = true; 1384 udp_info->vlan_tag = vlan_id | 1385 ctx_info->user_pri << VLAN_PRIO_SHIFT; 1386 } else { 1387 udp_info->insert_vlan_tag = false; 1388 } 1389 1390 av->attrs = attr->ah_attr; 1391 rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid); 1392 rdma_gid2ip((struct sockaddr *)&av->dgid_addr, &attr->ah_attr.grh.dgid); 1393 av->net_type = rdma_gid_attr_network_type(sgid_attr); 1394 if (av->net_type == RDMA_NETWORK_IPV6) { 1395 __be32 *daddr = 1396 av->dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32; 1397 __be32 *saddr = 1398 av->sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32; 1399 1400 irdma_copy_ip_ntohl(&udp_info->dest_ip_addr[0], daddr); 1401 irdma_copy_ip_ntohl(&udp_info->local_ipaddr[0], saddr); 1402 1403 udp_info->ipv4 = false; 1404 irdma_copy_ip_ntohl(local_ip, daddr); 1405 1406 } else if (av->net_type == RDMA_NETWORK_IPV4) { 1407 __be32 saddr = av->sgid_addr.saddr_in.sin_addr.s_addr; 1408 __be32 daddr = av->dgid_addr.saddr_in.sin_addr.s_addr; 1409 1410 local_ip[0] = ntohl(daddr); 1411 1412 udp_info->ipv4 = true; 1413 udp_info->dest_ip_addr[0] = 0; 1414 udp_info->dest_ip_addr[1] = 0; 1415 udp_info->dest_ip_addr[2] = 0; 1416 udp_info->dest_ip_addr[3] = local_ip[0]; 1417 1418 udp_info->local_ipaddr[0] = 0; 1419 udp_info->local_ipaddr[1] = 0; 1420 udp_info->local_ipaddr[2] = 0; 1421 udp_info->local_ipaddr[3] = ntohl(saddr); 1422 } 1423 udp_info->arp_idx = 1424 irdma_add_arp(iwdev->rf, local_ip, udp_info->ipv4, 1425 attr->ah_attr.roce.dmac); 1426 } 1427 1428 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 1429 if (attr->max_rd_atomic > dev->hw_attrs.max_hw_ord) { 1430 ibdev_err(&iwdev->ibdev, 1431 "rd_atomic = %d, above max_hw_ord=%d\n", 1432 attr->max_rd_atomic, 1433 dev->hw_attrs.max_hw_ord); 1434 return -EINVAL; 1435 } 1436 if (attr->max_rd_atomic) 1437 roce_info->ord_size = attr->max_rd_atomic; 1438 info.ord_valid = true; 1439 } 1440 1441 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 1442 if (attr->max_dest_rd_atomic > dev->hw_attrs.max_hw_ird) { 1443 ibdev_err(&iwdev->ibdev, 1444 "rd_atomic = %d, above max_hw_ird=%d\n", 1445 attr->max_dest_rd_atomic, 1446 dev->hw_attrs.max_hw_ird); 1447 return -EINVAL; 1448 } 1449 if (attr->max_dest_rd_atomic) 1450 roce_info->ird_size = attr->max_dest_rd_atomic; 1451 } 1452 1453 if (attr_mask & IB_QP_ACCESS_FLAGS) { 1454 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) 1455 roce_info->wr_rdresp_en = true; 1456 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) 1457 roce_info->wr_rdresp_en = true; 1458 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) 1459 roce_info->rd_en = true; 1460 if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_ATOMIC_OPS) 1461 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) 1462 ctx_info->remote_atomics_en = true; 1463 } 1464 1465 wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend)); 1466 1467 ibdev_dbg(&iwdev->ibdev, 1468 "VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d attr_mask=0x%x\n", 1469 __builtin_return_address(0), ibqp->qp_num, attr->qp_state, 1470 iwqp->ibqp_state, iwqp->iwarp_state, attr_mask); 1471 1472 spin_lock_irqsave(&iwqp->lock, flags); 1473 if (attr_mask & IB_QP_STATE) { 1474 if (!ib_modify_qp_is_ok(iwqp->ibqp_state, attr->qp_state, 1475 iwqp->ibqp.qp_type, attr_mask)) { 1476 ibdev_warn(&iwdev->ibdev, "modify_qp invalid for qp_id=%d, old_state=0x%x, new_state=0x%x\n", 1477 iwqp->ibqp.qp_num, iwqp->ibqp_state, 1478 attr->qp_state); 1479 ret = -EINVAL; 1480 goto exit; 1481 } 1482 info.curr_iwarp_state = iwqp->iwarp_state; 1483 1484 switch (attr->qp_state) { 1485 case IB_QPS_INIT: 1486 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) { 1487 ret = -EINVAL; 1488 goto exit; 1489 } 1490 1491 if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) { 1492 info.next_iwarp_state = IRDMA_QP_STATE_IDLE; 1493 issue_modify_qp = 1; 1494 } 1495 break; 1496 case IB_QPS_RTR: 1497 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) { 1498 ret = -EINVAL; 1499 goto exit; 1500 } 1501 info.arp_cache_idx_valid = true; 1502 info.cq_num_valid = true; 1503 info.next_iwarp_state = IRDMA_QP_STATE_RTR; 1504 issue_modify_qp = 1; 1505 break; 1506 case IB_QPS_RTS: 1507 if (iwqp->ibqp_state < IB_QPS_RTR || 1508 iwqp->ibqp_state == IB_QPS_ERR) { 1509 ret = -EINVAL; 1510 goto exit; 1511 } 1512 1513 info.arp_cache_idx_valid = true; 1514 info.cq_num_valid = true; 1515 info.ord_valid = true; 1516 info.next_iwarp_state = IRDMA_QP_STATE_RTS; 1517 issue_modify_qp = 1; 1518 if (iwdev->push_mode && udata && 1519 iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX && 1520 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) { 1521 spin_unlock_irqrestore(&iwqp->lock, flags); 1522 irdma_alloc_push_page(iwqp); 1523 spin_lock_irqsave(&iwqp->lock, flags); 1524 } 1525 break; 1526 case IB_QPS_SQD: 1527 if (iwqp->iwarp_state == IRDMA_QP_STATE_SQD) 1528 goto exit; 1529 1530 if (iwqp->iwarp_state != IRDMA_QP_STATE_RTS) { 1531 ret = -EINVAL; 1532 goto exit; 1533 } 1534 1535 info.next_iwarp_state = IRDMA_QP_STATE_SQD; 1536 issue_modify_qp = 1; 1537 iwqp->suspend_pending = true; 1538 break; 1539 case IB_QPS_SQE: 1540 case IB_QPS_ERR: 1541 case IB_QPS_RESET: 1542 if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) { 1543 spin_unlock_irqrestore(&iwqp->lock, flags); 1544 if (udata && udata->inlen) { 1545 if (ib_copy_from_udata(&ureq, udata, 1546 min(sizeof(ureq), udata->inlen))) 1547 return -EINVAL; 1548 1549 irdma_flush_wqes(iwqp, 1550 (ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) | 1551 (ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) | 1552 IRDMA_REFLUSH); 1553 } 1554 return 0; 1555 } 1556 1557 info.next_iwarp_state = IRDMA_QP_STATE_ERROR; 1558 issue_modify_qp = 1; 1559 break; 1560 default: 1561 ret = -EINVAL; 1562 goto exit; 1563 } 1564 1565 iwqp->ibqp_state = attr->qp_state; 1566 } 1567 1568 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; 1569 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; 1570 irdma_sc_qp_setctx_roce(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info); 1571 spin_unlock_irqrestore(&iwqp->lock, flags); 1572 1573 if (attr_mask & IB_QP_STATE) { 1574 if (issue_modify_qp) { 1575 ctx_info->rem_endpoint_idx = udp_info->arp_idx; 1576 if (irdma_hw_modify_qp(iwdev, iwqp, &info, true)) 1577 return -EINVAL; 1578 if (info.next_iwarp_state == IRDMA_QP_STATE_SQD) { 1579 ret = irdma_wait_for_suspend(iwqp); 1580 if (ret) 1581 return ret; 1582 } 1583 spin_lock_irqsave(&iwqp->lock, flags); 1584 if (iwqp->iwarp_state == info.curr_iwarp_state) { 1585 iwqp->iwarp_state = info.next_iwarp_state; 1586 iwqp->ibqp_state = attr->qp_state; 1587 } 1588 if (iwqp->ibqp_state > IB_QPS_RTS && 1589 !iwqp->flush_issued) { 1590 spin_unlock_irqrestore(&iwqp->lock, flags); 1591 irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | 1592 IRDMA_FLUSH_RQ | 1593 IRDMA_FLUSH_WAIT); 1594 iwqp->flush_issued = 1; 1595 } else { 1596 spin_unlock_irqrestore(&iwqp->lock, flags); 1597 } 1598 } else { 1599 iwqp->ibqp_state = attr->qp_state; 1600 } 1601 if (udata && udata->outlen && dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) { 1602 struct irdma_ucontext *ucontext; 1603 1604 ucontext = rdma_udata_to_drv_context(udata, 1605 struct irdma_ucontext, ibucontext); 1606 if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX && 1607 !iwqp->push_wqe_mmap_entry && 1608 !irdma_setup_push_mmap_entries(ucontext, iwqp, 1609 &uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) { 1610 uresp.push_valid = 1; 1611 uresp.push_offset = iwqp->sc_qp.push_offset; 1612 } 1613 ret = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp), 1614 udata->outlen)); 1615 if (ret) { 1616 irdma_remove_push_mmap_entries(iwqp); 1617 ibdev_dbg(&iwdev->ibdev, 1618 "VERBS: copy_to_udata failed\n"); 1619 return ret; 1620 } 1621 } 1622 } 1623 1624 return 0; 1625 exit: 1626 spin_unlock_irqrestore(&iwqp->lock, flags); 1627 1628 return ret; 1629 } 1630 1631 /** 1632 * irdma_modify_qp - modify qp request 1633 * @ibqp: qp's pointer for modify 1634 * @attr: access attributes 1635 * @attr_mask: state mask 1636 * @udata: user data 1637 */ 1638 int irdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, 1639 struct ib_udata *udata) 1640 { 1641 #define IRDMA_MODIFY_QP_MIN_REQ_LEN offsetofend(struct irdma_modify_qp_req, rq_flush) 1642 #define IRDMA_MODIFY_QP_MIN_RESP_LEN offsetofend(struct irdma_modify_qp_resp, push_valid) 1643 struct irdma_qp *iwqp = to_iwqp(ibqp); 1644 struct irdma_device *iwdev = iwqp->iwdev; 1645 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 1646 struct irdma_qp_host_ctx_info *ctx_info; 1647 struct irdma_tcp_offload_info *tcp_info; 1648 struct irdma_iwarp_offload_info *offload_info; 1649 struct irdma_modify_qp_info info = {}; 1650 struct irdma_modify_qp_resp uresp = {}; 1651 struct irdma_modify_qp_req ureq = {}; 1652 u8 issue_modify_qp = 0; 1653 u8 dont_wait = 0; 1654 int err; 1655 unsigned long flags; 1656 1657 if (udata) { 1658 /* udata inlen/outlen can be 0 when supporting legacy libi40iw */ 1659 if ((udata->inlen && udata->inlen < IRDMA_MODIFY_QP_MIN_REQ_LEN) || 1660 (udata->outlen && udata->outlen < IRDMA_MODIFY_QP_MIN_RESP_LEN)) 1661 return -EINVAL; 1662 } 1663 1664 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS) 1665 return -EOPNOTSUPP; 1666 1667 ctx_info = &iwqp->ctx_info; 1668 offload_info = &iwqp->iwarp_info; 1669 tcp_info = &iwqp->tcp_info; 1670 wait_event(iwqp->mod_qp_waitq, !atomic_read(&iwqp->hw_mod_qp_pend)); 1671 ibdev_dbg(&iwdev->ibdev, 1672 "VERBS: caller: %pS qp_id=%d to_ibqpstate=%d ibqpstate=%d irdma_qpstate=%d last_aeq=%d hw_tcp_state=%d hw_iwarp_state=%d attr_mask=0x%x\n", 1673 __builtin_return_address(0), ibqp->qp_num, attr->qp_state, 1674 iwqp->ibqp_state, iwqp->iwarp_state, iwqp->last_aeq, 1675 iwqp->hw_tcp_state, iwqp->hw_iwarp_state, attr_mask); 1676 1677 spin_lock_irqsave(&iwqp->lock, flags); 1678 if (attr_mask & IB_QP_STATE) { 1679 info.curr_iwarp_state = iwqp->iwarp_state; 1680 switch (attr->qp_state) { 1681 case IB_QPS_INIT: 1682 case IB_QPS_RTR: 1683 if (iwqp->iwarp_state > IRDMA_QP_STATE_IDLE) { 1684 err = -EINVAL; 1685 goto exit; 1686 } 1687 1688 if (iwqp->iwarp_state == IRDMA_QP_STATE_INVALID) { 1689 info.next_iwarp_state = IRDMA_QP_STATE_IDLE; 1690 issue_modify_qp = 1; 1691 } 1692 if (iwdev->push_mode && udata && 1693 iwqp->sc_qp.push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX && 1694 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) { 1695 spin_unlock_irqrestore(&iwqp->lock, flags); 1696 irdma_alloc_push_page(iwqp); 1697 spin_lock_irqsave(&iwqp->lock, flags); 1698 } 1699 break; 1700 case IB_QPS_RTS: 1701 if (iwqp->iwarp_state > IRDMA_QP_STATE_RTS || 1702 !iwqp->cm_id) { 1703 err = -EINVAL; 1704 goto exit; 1705 } 1706 1707 issue_modify_qp = 1; 1708 iwqp->hw_tcp_state = IRDMA_TCP_STATE_ESTABLISHED; 1709 iwqp->hte_added = 1; 1710 info.next_iwarp_state = IRDMA_QP_STATE_RTS; 1711 info.tcp_ctx_valid = true; 1712 info.ord_valid = true; 1713 info.arp_cache_idx_valid = true; 1714 info.cq_num_valid = true; 1715 break; 1716 case IB_QPS_SQD: 1717 if (iwqp->hw_iwarp_state > IRDMA_QP_STATE_RTS) { 1718 err = 0; 1719 goto exit; 1720 } 1721 1722 if (iwqp->iwarp_state == IRDMA_QP_STATE_CLOSING || 1723 iwqp->iwarp_state < IRDMA_QP_STATE_RTS) { 1724 err = 0; 1725 goto exit; 1726 } 1727 1728 if (iwqp->iwarp_state > IRDMA_QP_STATE_CLOSING) { 1729 err = -EINVAL; 1730 goto exit; 1731 } 1732 1733 info.next_iwarp_state = IRDMA_QP_STATE_CLOSING; 1734 issue_modify_qp = 1; 1735 break; 1736 case IB_QPS_SQE: 1737 if (iwqp->iwarp_state >= IRDMA_QP_STATE_TERMINATE) { 1738 err = -EINVAL; 1739 goto exit; 1740 } 1741 1742 info.next_iwarp_state = IRDMA_QP_STATE_TERMINATE; 1743 issue_modify_qp = 1; 1744 break; 1745 case IB_QPS_ERR: 1746 case IB_QPS_RESET: 1747 if (iwqp->iwarp_state == IRDMA_QP_STATE_ERROR) { 1748 spin_unlock_irqrestore(&iwqp->lock, flags); 1749 if (udata && udata->inlen) { 1750 if (ib_copy_from_udata(&ureq, udata, 1751 min(sizeof(ureq), udata->inlen))) 1752 return -EINVAL; 1753 1754 irdma_flush_wqes(iwqp, 1755 (ureq.sq_flush ? IRDMA_FLUSH_SQ : 0) | 1756 (ureq.rq_flush ? IRDMA_FLUSH_RQ : 0) | 1757 IRDMA_REFLUSH); 1758 } 1759 return 0; 1760 } 1761 1762 if (iwqp->sc_qp.term_flags) { 1763 spin_unlock_irqrestore(&iwqp->lock, flags); 1764 irdma_terminate_del_timer(&iwqp->sc_qp); 1765 spin_lock_irqsave(&iwqp->lock, flags); 1766 } 1767 info.next_iwarp_state = IRDMA_QP_STATE_ERROR; 1768 if (iwqp->hw_tcp_state > IRDMA_TCP_STATE_CLOSED && 1769 iwdev->iw_status && 1770 iwqp->hw_tcp_state != IRDMA_TCP_STATE_TIME_WAIT) 1771 info.reset_tcp_conn = true; 1772 else 1773 dont_wait = 1; 1774 1775 issue_modify_qp = 1; 1776 info.next_iwarp_state = IRDMA_QP_STATE_ERROR; 1777 break; 1778 default: 1779 err = -EINVAL; 1780 goto exit; 1781 } 1782 1783 iwqp->ibqp_state = attr->qp_state; 1784 } 1785 if (attr_mask & IB_QP_ACCESS_FLAGS) { 1786 ctx_info->iwarp_info_valid = true; 1787 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) 1788 offload_info->wr_rdresp_en = true; 1789 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) 1790 offload_info->wr_rdresp_en = true; 1791 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) 1792 offload_info->rd_en = true; 1793 } 1794 1795 if (ctx_info->iwarp_info_valid) { 1796 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; 1797 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; 1798 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info); 1799 } 1800 spin_unlock_irqrestore(&iwqp->lock, flags); 1801 1802 if (attr_mask & IB_QP_STATE) { 1803 if (issue_modify_qp) { 1804 ctx_info->rem_endpoint_idx = tcp_info->arp_idx; 1805 if (irdma_hw_modify_qp(iwdev, iwqp, &info, true)) 1806 return -EINVAL; 1807 } 1808 1809 spin_lock_irqsave(&iwqp->lock, flags); 1810 if (iwqp->iwarp_state == info.curr_iwarp_state) { 1811 iwqp->iwarp_state = info.next_iwarp_state; 1812 iwqp->ibqp_state = attr->qp_state; 1813 } 1814 spin_unlock_irqrestore(&iwqp->lock, flags); 1815 } 1816 1817 if (issue_modify_qp && iwqp->ibqp_state > IB_QPS_RTS) { 1818 if (dont_wait) { 1819 if (iwqp->hw_tcp_state) { 1820 spin_lock_irqsave(&iwqp->lock, flags); 1821 iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED; 1822 iwqp->last_aeq = IRDMA_AE_RESET_SENT; 1823 spin_unlock_irqrestore(&iwqp->lock, flags); 1824 } 1825 irdma_cm_disconn(iwqp); 1826 } else { 1827 int close_timer_started; 1828 1829 spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags); 1830 1831 if (iwqp->cm_node) { 1832 refcount_inc(&iwqp->cm_node->refcnt); 1833 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags); 1834 close_timer_started = atomic_inc_return(&iwqp->close_timer_started); 1835 if (iwqp->cm_id && close_timer_started == 1) 1836 irdma_schedule_cm_timer(iwqp->cm_node, 1837 (struct irdma_puda_buf *)iwqp, 1838 IRDMA_TIMER_TYPE_CLOSE, 1, 0); 1839 1840 irdma_rem_ref_cm_node(iwqp->cm_node); 1841 } else { 1842 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags); 1843 } 1844 } 1845 } 1846 if (attr_mask & IB_QP_STATE && udata && udata->outlen && 1847 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) { 1848 struct irdma_ucontext *ucontext; 1849 1850 ucontext = rdma_udata_to_drv_context(udata, 1851 struct irdma_ucontext, ibucontext); 1852 if (iwqp->sc_qp.push_idx != IRDMA_INVALID_PUSH_PAGE_INDEX && 1853 !iwqp->push_wqe_mmap_entry && 1854 !irdma_setup_push_mmap_entries(ucontext, iwqp, 1855 &uresp.push_wqe_mmap_key, &uresp.push_db_mmap_key)) { 1856 uresp.push_valid = 1; 1857 uresp.push_offset = iwqp->sc_qp.push_offset; 1858 } 1859 1860 err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp), 1861 udata->outlen)); 1862 if (err) { 1863 irdma_remove_push_mmap_entries(iwqp); 1864 ibdev_dbg(&iwdev->ibdev, 1865 "VERBS: copy_to_udata failed\n"); 1866 return err; 1867 } 1868 } 1869 1870 return 0; 1871 exit: 1872 spin_unlock_irqrestore(&iwqp->lock, flags); 1873 1874 return err; 1875 } 1876 1877 /** 1878 * irdma_srq_free_rsrc - free up resources for srq 1879 * @rf: RDMA PCI function 1880 * @iwsrq: srq ptr 1881 */ 1882 static void irdma_srq_free_rsrc(struct irdma_pci_f *rf, struct irdma_srq *iwsrq) 1883 { 1884 struct irdma_sc_srq *srq = &iwsrq->sc_srq; 1885 1886 if (!iwsrq->user_mode) { 1887 dma_free_coherent(rf->sc_dev.hw->device, iwsrq->kmem.size, 1888 iwsrq->kmem.va, iwsrq->kmem.pa); 1889 iwsrq->kmem.va = NULL; 1890 } 1891 1892 irdma_free_rsrc(rf, rf->allocated_srqs, srq->srq_uk.srq_id); 1893 } 1894 1895 /** 1896 * irdma_cq_free_rsrc - free up resources for cq 1897 * @rf: RDMA PCI function 1898 * @iwcq: cq ptr 1899 */ 1900 static void irdma_cq_free_rsrc(struct irdma_pci_f *rf, struct irdma_cq *iwcq) 1901 { 1902 struct irdma_sc_cq *cq = &iwcq->sc_cq; 1903 1904 if (!iwcq->user_mode) { 1905 dma_free_coherent(rf->sc_dev.hw->device, iwcq->kmem.size, 1906 iwcq->kmem.va, iwcq->kmem.pa); 1907 iwcq->kmem.va = NULL; 1908 dma_free_coherent(rf->sc_dev.hw->device, 1909 iwcq->kmem_shadow.size, 1910 iwcq->kmem_shadow.va, iwcq->kmem_shadow.pa); 1911 iwcq->kmem_shadow.va = NULL; 1912 } 1913 1914 irdma_free_rsrc(rf, rf->allocated_cqs, cq->cq_uk.cq_id); 1915 } 1916 1917 /** 1918 * irdma_free_cqbuf - worker to free a cq buffer 1919 * @work: provides access to the cq buffer to free 1920 */ 1921 static void irdma_free_cqbuf(struct work_struct *work) 1922 { 1923 struct irdma_cq_buf *cq_buf = container_of(work, struct irdma_cq_buf, work); 1924 1925 dma_free_coherent(cq_buf->hw->device, cq_buf->kmem_buf.size, 1926 cq_buf->kmem_buf.va, cq_buf->kmem_buf.pa); 1927 cq_buf->kmem_buf.va = NULL; 1928 kfree(cq_buf); 1929 } 1930 1931 /** 1932 * irdma_process_resize_list - remove resized cq buffers from the resize_list 1933 * @iwcq: cq which owns the resize_list 1934 * @iwdev: irdma device 1935 * @lcqe_buf: the buffer where the last cqe is received 1936 */ 1937 static int irdma_process_resize_list(struct irdma_cq *iwcq, 1938 struct irdma_device *iwdev, 1939 struct irdma_cq_buf *lcqe_buf) 1940 { 1941 struct list_head *tmp_node, *list_node; 1942 struct irdma_cq_buf *cq_buf; 1943 int cnt = 0; 1944 1945 list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) { 1946 cq_buf = list_entry(list_node, struct irdma_cq_buf, list); 1947 if (cq_buf == lcqe_buf) 1948 return cnt; 1949 1950 list_del(&cq_buf->list); 1951 queue_work(iwdev->cleanup_wq, &cq_buf->work); 1952 cnt++; 1953 } 1954 1955 return cnt; 1956 } 1957 1958 /** 1959 * irdma_destroy_srq - destroy srq 1960 * @ibsrq: srq pointer 1961 * @udata: user data 1962 */ 1963 static int irdma_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata) 1964 { 1965 struct irdma_device *iwdev = to_iwdev(ibsrq->device); 1966 struct irdma_srq *iwsrq = to_iwsrq(ibsrq); 1967 struct irdma_sc_srq *srq = &iwsrq->sc_srq; 1968 1969 irdma_srq_wq_destroy(iwdev->rf, srq); 1970 irdma_srq_free_rsrc(iwdev->rf, iwsrq); 1971 return 0; 1972 } 1973 1974 /** 1975 * irdma_destroy_cq - destroy cq 1976 * @ib_cq: cq pointer 1977 * @udata: user data 1978 */ 1979 static int irdma_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata) 1980 { 1981 struct irdma_device *iwdev = to_iwdev(ib_cq->device); 1982 struct irdma_cq *iwcq = to_iwcq(ib_cq); 1983 struct irdma_sc_cq *cq = &iwcq->sc_cq; 1984 struct irdma_sc_dev *dev = cq->dev; 1985 struct irdma_sc_ceq *ceq = dev->ceq[cq->ceq_id]; 1986 struct irdma_ceq *iwceq = container_of(ceq, struct irdma_ceq, sc_ceq); 1987 unsigned long flags; 1988 1989 spin_lock_irqsave(&iwcq->lock, flags); 1990 if (!list_empty(&iwcq->cmpl_generated)) 1991 irdma_remove_cmpls_list(iwcq); 1992 if (!list_empty(&iwcq->resize_list)) 1993 irdma_process_resize_list(iwcq, iwdev, NULL); 1994 spin_unlock_irqrestore(&iwcq->lock, flags); 1995 1996 irdma_cq_rem_ref(ib_cq); 1997 wait_for_completion(&iwcq->free_cq); 1998 1999 irdma_cq_wq_destroy(iwdev->rf, cq); 2000 2001 spin_lock_irqsave(&iwceq->ce_lock, flags); 2002 irdma_sc_cleanup_ceqes(cq, ceq); 2003 spin_unlock_irqrestore(&iwceq->ce_lock, flags); 2004 irdma_cq_free_rsrc(iwdev->rf, iwcq); 2005 2006 return 0; 2007 } 2008 2009 /** 2010 * irdma_resize_cq - resize cq 2011 * @ibcq: cq to be resized 2012 * @entries: desired cq size 2013 * @udata: user data 2014 */ 2015 static int irdma_resize_cq(struct ib_cq *ibcq, int entries, 2016 struct ib_udata *udata) 2017 { 2018 #define IRDMA_RESIZE_CQ_MIN_REQ_LEN offsetofend(struct irdma_resize_cq_req, user_cq_buffer) 2019 struct irdma_cq *iwcq = to_iwcq(ibcq); 2020 struct irdma_sc_dev *dev = iwcq->sc_cq.dev; 2021 struct irdma_cqp_request *cqp_request; 2022 struct cqp_cmds_info *cqp_info; 2023 struct irdma_modify_cq_info *m_info; 2024 struct irdma_modify_cq_info info = {}; 2025 struct irdma_dma_mem kmem_buf; 2026 struct irdma_cq_mr *cqmr_buf; 2027 struct irdma_pbl *iwpbl_buf; 2028 struct irdma_device *iwdev; 2029 struct irdma_pci_f *rf; 2030 struct irdma_cq_buf *cq_buf = NULL; 2031 unsigned long flags; 2032 int ret; 2033 2034 iwdev = to_iwdev(ibcq->device); 2035 rf = iwdev->rf; 2036 2037 if (!(rf->sc_dev.hw_attrs.uk_attrs.feature_flags & 2038 IRDMA_FEATURE_CQ_RESIZE)) 2039 return -EOPNOTSUPP; 2040 2041 if (udata && udata->inlen < IRDMA_RESIZE_CQ_MIN_REQ_LEN) 2042 return -EINVAL; 2043 2044 if (entries > rf->max_cqe) 2045 return -EINVAL; 2046 2047 if (!iwcq->user_mode) { 2048 entries++; 2049 2050 if (!iwcq->sc_cq.cq_uk.avoid_mem_cflct && 2051 dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) 2052 entries *= 2; 2053 2054 if (entries & 1) 2055 entries += 1; /* cq size must be an even number */ 2056 } 2057 2058 info.cq_size = max(entries, 4); 2059 2060 if (info.cq_size == iwcq->sc_cq.cq_uk.cq_size - 1) 2061 return 0; 2062 2063 if (udata) { 2064 struct irdma_resize_cq_req req = {}; 2065 struct irdma_ucontext *ucontext = 2066 rdma_udata_to_drv_context(udata, struct irdma_ucontext, 2067 ibucontext); 2068 2069 /* CQ resize not supported with legacy GEN_1 libi40iw */ 2070 if (ucontext->legacy_mode) 2071 return -EOPNOTSUPP; 2072 2073 if (ib_copy_from_udata(&req, udata, 2074 min(sizeof(req), udata->inlen))) 2075 return -EINVAL; 2076 2077 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); 2078 iwpbl_buf = irdma_get_pbl((unsigned long)req.user_cq_buffer, 2079 &ucontext->cq_reg_mem_list); 2080 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); 2081 2082 if (!iwpbl_buf) 2083 return -ENOMEM; 2084 2085 cqmr_buf = &iwpbl_buf->cq_mr; 2086 if (iwpbl_buf->pbl_allocated) { 2087 info.virtual_map = true; 2088 info.pbl_chunk_size = 1; 2089 info.first_pm_pbl_idx = cqmr_buf->cq_pbl.idx; 2090 } else { 2091 info.cq_pa = cqmr_buf->cq_pbl.addr; 2092 } 2093 } else { 2094 /* Kmode CQ resize */ 2095 int rsize; 2096 2097 rsize = info.cq_size * sizeof(struct irdma_cqe); 2098 kmem_buf.size = ALIGN(round_up(rsize, 256), 256); 2099 kmem_buf.va = dma_alloc_coherent(dev->hw->device, 2100 kmem_buf.size, &kmem_buf.pa, 2101 GFP_KERNEL); 2102 if (!kmem_buf.va) 2103 return -ENOMEM; 2104 2105 info.cq_base = kmem_buf.va; 2106 info.cq_pa = kmem_buf.pa; 2107 cq_buf = kzalloc(sizeof(*cq_buf), GFP_KERNEL); 2108 if (!cq_buf) { 2109 ret = -ENOMEM; 2110 goto error; 2111 } 2112 } 2113 2114 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true); 2115 if (!cqp_request) { 2116 ret = -ENOMEM; 2117 goto error; 2118 } 2119 2120 info.shadow_read_threshold = iwcq->sc_cq.shadow_read_threshold; 2121 info.cq_resize = true; 2122 2123 cqp_info = &cqp_request->info; 2124 m_info = &cqp_info->in.u.cq_modify.info; 2125 memcpy(m_info, &info, sizeof(*m_info)); 2126 2127 cqp_info->cqp_cmd = IRDMA_OP_CQ_MODIFY; 2128 cqp_info->in.u.cq_modify.cq = &iwcq->sc_cq; 2129 cqp_info->in.u.cq_modify.scratch = (uintptr_t)cqp_request; 2130 cqp_info->post_sq = 1; 2131 ret = irdma_handle_cqp_op(rf, cqp_request); 2132 irdma_put_cqp_request(&rf->cqp, cqp_request); 2133 if (ret) 2134 goto error; 2135 2136 spin_lock_irqsave(&iwcq->lock, flags); 2137 if (cq_buf) { 2138 cq_buf->kmem_buf = iwcq->kmem; 2139 cq_buf->hw = dev->hw; 2140 memcpy(&cq_buf->cq_uk, &iwcq->sc_cq.cq_uk, sizeof(cq_buf->cq_uk)); 2141 INIT_WORK(&cq_buf->work, irdma_free_cqbuf); 2142 list_add_tail(&cq_buf->list, &iwcq->resize_list); 2143 iwcq->kmem = kmem_buf; 2144 } 2145 2146 irdma_sc_cq_resize(&iwcq->sc_cq, &info); 2147 ibcq->cqe = info.cq_size - 1; 2148 spin_unlock_irqrestore(&iwcq->lock, flags); 2149 2150 return 0; 2151 error: 2152 if (!udata) { 2153 dma_free_coherent(dev->hw->device, kmem_buf.size, kmem_buf.va, 2154 kmem_buf.pa); 2155 kmem_buf.va = NULL; 2156 } 2157 kfree(cq_buf); 2158 2159 return ret; 2160 } 2161 2162 /** 2163 * irdma_srq_event - event notification for srq limit 2164 * @srq: shared srq struct 2165 */ 2166 void irdma_srq_event(struct irdma_sc_srq *srq) 2167 { 2168 struct irdma_srq *iwsrq = container_of(srq, struct irdma_srq, sc_srq); 2169 struct ib_srq *ibsrq = &iwsrq->ibsrq; 2170 struct ib_event event; 2171 2172 srq->srq_limit = 0; 2173 2174 if (!ibsrq->event_handler) 2175 return; 2176 2177 event.device = ibsrq->device; 2178 event.element.port_num = 1; 2179 event.element.srq = ibsrq; 2180 event.event = IB_EVENT_SRQ_LIMIT_REACHED; 2181 ibsrq->event_handler(&event, ibsrq->srq_context); 2182 } 2183 2184 /** 2185 * irdma_modify_srq - modify srq request 2186 * @ibsrq: srq's pointer for modify 2187 * @attr: access attributes 2188 * @attr_mask: state mask 2189 * @udata: user data 2190 */ 2191 static int irdma_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 2192 enum ib_srq_attr_mask attr_mask, 2193 struct ib_udata *udata) 2194 { 2195 struct irdma_device *iwdev = to_iwdev(ibsrq->device); 2196 struct irdma_srq *iwsrq = to_iwsrq(ibsrq); 2197 struct irdma_cqp_request *cqp_request; 2198 struct irdma_pci_f *rf = iwdev->rf; 2199 struct irdma_modify_srq_info *info; 2200 struct cqp_cmds_info *cqp_info; 2201 int status; 2202 2203 if (attr_mask & IB_SRQ_MAX_WR) 2204 return -EINVAL; 2205 2206 if (!(attr_mask & IB_SRQ_LIMIT)) 2207 return 0; 2208 2209 if (attr->srq_limit > iwsrq->sc_srq.srq_uk.srq_size) 2210 return -EINVAL; 2211 2212 /* Execute this cqp op synchronously, so we can update srq_limit 2213 * upon successful completion. 2214 */ 2215 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true); 2216 if (!cqp_request) 2217 return -ENOMEM; 2218 2219 cqp_info = &cqp_request->info; 2220 info = &cqp_info->in.u.srq_modify.info; 2221 info->srq_limit = attr->srq_limit; 2222 if (info->srq_limit > 0xFFF) 2223 info->srq_limit = 0xFFF; 2224 info->arm_limit_event = 1; 2225 2226 cqp_info->cqp_cmd = IRDMA_OP_SRQ_MODIFY; 2227 cqp_info->post_sq = 1; 2228 cqp_info->in.u.srq_modify.srq = &iwsrq->sc_srq; 2229 cqp_info->in.u.srq_modify.scratch = (uintptr_t)cqp_request; 2230 status = irdma_handle_cqp_op(rf, cqp_request); 2231 irdma_put_cqp_request(&rf->cqp, cqp_request); 2232 if (status) 2233 return status; 2234 2235 iwsrq->sc_srq.srq_limit = info->srq_limit; 2236 2237 return 0; 2238 } 2239 2240 static int irdma_setup_umode_srq(struct irdma_device *iwdev, 2241 struct irdma_srq *iwsrq, 2242 struct irdma_srq_init_info *info, 2243 struct ib_udata *udata) 2244 { 2245 #define IRDMA_CREATE_SRQ_MIN_REQ_LEN \ 2246 offsetofend(struct irdma_create_srq_req, user_shadow_area) 2247 struct irdma_create_srq_req req = {}; 2248 struct irdma_ucontext *ucontext; 2249 struct irdma_srq_mr *srqmr; 2250 struct irdma_pbl *iwpbl; 2251 unsigned long flags; 2252 2253 iwsrq->user_mode = true; 2254 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext, 2255 ibucontext); 2256 2257 if (udata->inlen < IRDMA_CREATE_SRQ_MIN_REQ_LEN) 2258 return -EINVAL; 2259 2260 if (ib_copy_from_udata(&req, udata, 2261 min(sizeof(req), udata->inlen))) 2262 return -EFAULT; 2263 2264 spin_lock_irqsave(&ucontext->srq_reg_mem_list_lock, flags); 2265 iwpbl = irdma_get_pbl((unsigned long)req.user_srq_buf, 2266 &ucontext->srq_reg_mem_list); 2267 spin_unlock_irqrestore(&ucontext->srq_reg_mem_list_lock, flags); 2268 if (!iwpbl) 2269 return -EPROTO; 2270 2271 iwsrq->iwpbl = iwpbl; 2272 srqmr = &iwpbl->srq_mr; 2273 2274 if (iwpbl->pbl_allocated) { 2275 info->virtual_map = true; 2276 info->pbl_chunk_size = 1; 2277 info->first_pm_pbl_idx = srqmr->srq_pbl.idx; 2278 info->leaf_pbl_size = 1; 2279 } else { 2280 info->srq_pa = srqmr->srq_pbl.addr; 2281 } 2282 info->shadow_area_pa = srqmr->shadow; 2283 2284 return 0; 2285 } 2286 2287 static int irdma_setup_kmode_srq(struct irdma_device *iwdev, 2288 struct irdma_srq *iwsrq, 2289 struct irdma_srq_init_info *info, u32 depth, 2290 u8 shift) 2291 { 2292 struct irdma_srq_uk_init_info *ukinfo = &info->srq_uk_init_info; 2293 struct irdma_dma_mem *mem = &iwsrq->kmem; 2294 u32 size, ring_size; 2295 2296 ring_size = depth * IRDMA_QP_WQE_MIN_SIZE; 2297 size = ring_size + (IRDMA_SHADOW_AREA_SIZE << 3); 2298 2299 mem->size = ALIGN(size, 256); 2300 mem->va = dma_alloc_coherent(iwdev->rf->hw.device, mem->size, 2301 &mem->pa, GFP_KERNEL); 2302 if (!mem->va) 2303 return -ENOMEM; 2304 2305 ukinfo->srq = mem->va; 2306 ukinfo->srq_size = depth >> shift; 2307 ukinfo->shadow_area = mem->va + ring_size; 2308 2309 info->shadow_area_pa = info->srq_pa + ring_size; 2310 info->srq_pa = mem->pa; 2311 2312 return 0; 2313 } 2314 2315 /** 2316 * irdma_create_srq - create srq 2317 * @ibsrq: ib's srq pointer 2318 * @initattrs: attributes for srq 2319 * @udata: user data for create srq 2320 */ 2321 static int irdma_create_srq(struct ib_srq *ibsrq, 2322 struct ib_srq_init_attr *initattrs, 2323 struct ib_udata *udata) 2324 { 2325 struct irdma_device *iwdev = to_iwdev(ibsrq->device); 2326 struct ib_srq_attr *attr = &initattrs->attr; 2327 struct irdma_pd *iwpd = to_iwpd(ibsrq->pd); 2328 struct irdma_srq *iwsrq = to_iwsrq(ibsrq); 2329 struct irdma_srq_uk_init_info *ukinfo; 2330 struct irdma_cqp_request *cqp_request; 2331 struct irdma_srq_init_info info = {}; 2332 struct irdma_pci_f *rf = iwdev->rf; 2333 struct irdma_uk_attrs *uk_attrs; 2334 struct cqp_cmds_info *cqp_info; 2335 int err_code = 0; 2336 u32 depth; 2337 u8 shift; 2338 2339 uk_attrs = &rf->sc_dev.hw_attrs.uk_attrs; 2340 ukinfo = &info.srq_uk_init_info; 2341 2342 if (initattrs->srq_type != IB_SRQT_BASIC) 2343 return -EOPNOTSUPP; 2344 2345 if (!(uk_attrs->feature_flags & IRDMA_FEATURE_SRQ) || 2346 attr->max_sge > uk_attrs->max_hw_wq_frags) 2347 return -EINVAL; 2348 2349 refcount_set(&iwsrq->refcnt, 1); 2350 spin_lock_init(&iwsrq->lock); 2351 err_code = irdma_alloc_rsrc(rf, rf->allocated_srqs, rf->max_srq, 2352 &iwsrq->srq_num, &rf->next_srq); 2353 if (err_code) 2354 return err_code; 2355 2356 ukinfo->max_srq_frag_cnt = attr->max_sge; 2357 ukinfo->uk_attrs = uk_attrs; 2358 ukinfo->srq_id = iwsrq->srq_num; 2359 2360 irdma_get_wqe_shift(ukinfo->uk_attrs, ukinfo->max_srq_frag_cnt, 0, 2361 &shift); 2362 2363 err_code = irdma_get_srqdepth(ukinfo->uk_attrs, attr->max_wr, 2364 shift, &depth); 2365 if (err_code) 2366 return err_code; 2367 2368 /* Actual SRQ size in WRs for ring and HW */ 2369 ukinfo->srq_size = depth >> shift; 2370 2371 /* Max postable WRs to SRQ */ 2372 iwsrq->max_wr = (depth - IRDMA_RQ_RSVD) >> shift; 2373 attr->max_wr = iwsrq->max_wr; 2374 2375 if (udata) 2376 err_code = irdma_setup_umode_srq(iwdev, iwsrq, &info, udata); 2377 else 2378 err_code = irdma_setup_kmode_srq(iwdev, iwsrq, &info, depth, 2379 shift); 2380 2381 if (err_code) 2382 goto free_rsrc; 2383 2384 info.vsi = &iwdev->vsi; 2385 info.pd = &iwpd->sc_pd; 2386 2387 err_code = irdma_sc_srq_init(&iwsrq->sc_srq, &info); 2388 if (err_code) 2389 goto free_dmem; 2390 2391 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true); 2392 if (!cqp_request) { 2393 err_code = -ENOMEM; 2394 goto free_dmem; 2395 } 2396 2397 cqp_info = &cqp_request->info; 2398 cqp_info->cqp_cmd = IRDMA_OP_SRQ_CREATE; 2399 cqp_info->post_sq = 1; 2400 cqp_info->in.u.srq_create.srq = &iwsrq->sc_srq; 2401 cqp_info->in.u.srq_create.scratch = (uintptr_t)cqp_request; 2402 err_code = irdma_handle_cqp_op(rf, cqp_request); 2403 irdma_put_cqp_request(&rf->cqp, cqp_request); 2404 if (err_code) 2405 goto free_dmem; 2406 2407 if (udata) { 2408 struct irdma_create_srq_resp resp = {}; 2409 2410 resp.srq_id = iwsrq->srq_num; 2411 resp.srq_size = ukinfo->srq_size; 2412 if (ib_copy_to_udata(udata, &resp, 2413 min(sizeof(resp), udata->outlen))) { 2414 err_code = -EPROTO; 2415 goto srq_destroy; 2416 } 2417 } 2418 2419 return 0; 2420 2421 srq_destroy: 2422 irdma_srq_wq_destroy(rf, &iwsrq->sc_srq); 2423 2424 free_dmem: 2425 if (!iwsrq->user_mode) 2426 dma_free_coherent(rf->hw.device, iwsrq->kmem.size, 2427 iwsrq->kmem.va, iwsrq->kmem.pa); 2428 free_rsrc: 2429 irdma_free_rsrc(rf, rf->allocated_srqs, iwsrq->srq_num); 2430 return err_code; 2431 } 2432 2433 /** 2434 * irdma_query_srq - get SRQ attributes 2435 * @ibsrq: the SRQ to query 2436 * @attr: the attributes of the SRQ 2437 */ 2438 static int irdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) 2439 { 2440 struct irdma_srq *iwsrq = to_iwsrq(ibsrq); 2441 2442 attr->max_wr = iwsrq->max_wr; 2443 attr->max_sge = iwsrq->sc_srq.srq_uk.max_srq_frag_cnt; 2444 attr->srq_limit = iwsrq->sc_srq.srq_limit; 2445 2446 return 0; 2447 } 2448 2449 static inline int cq_validate_flags(u32 flags, u8 hw_rev) 2450 { 2451 /* GEN1/2 does not support CQ create flags */ 2452 if (hw_rev <= IRDMA_GEN_2) 2453 return flags ? -EOPNOTSUPP : 0; 2454 2455 return flags & ~IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION ? -EOPNOTSUPP : 0; 2456 } 2457 2458 /** 2459 * irdma_create_cq - create cq 2460 * @ibcq: CQ allocated 2461 * @attr: attributes for cq 2462 * @attrs: uverbs attribute bundle 2463 */ 2464 static int irdma_create_cq(struct ib_cq *ibcq, 2465 const struct ib_cq_init_attr *attr, 2466 struct uverbs_attr_bundle *attrs) 2467 { 2468 #define IRDMA_CREATE_CQ_MIN_REQ_LEN offsetofend(struct irdma_create_cq_req, user_cq_buf) 2469 #define IRDMA_CREATE_CQ_MIN_RESP_LEN offsetofend(struct irdma_create_cq_resp, cq_size) 2470 struct ib_udata *udata = &attrs->driver_udata; 2471 struct ib_device *ibdev = ibcq->device; 2472 struct irdma_device *iwdev = to_iwdev(ibdev); 2473 struct irdma_pci_f *rf = iwdev->rf; 2474 struct irdma_cq *iwcq = to_iwcq(ibcq); 2475 u32 cq_num = 0; 2476 struct irdma_sc_cq *cq; 2477 struct irdma_sc_dev *dev = &rf->sc_dev; 2478 struct irdma_cq_init_info info = {}; 2479 struct irdma_cqp_request *cqp_request; 2480 struct cqp_cmds_info *cqp_info; 2481 struct irdma_cq_uk_init_info *ukinfo = &info.cq_uk_init_info; 2482 unsigned long flags; 2483 int err_code; 2484 int entries = attr->cqe; 2485 bool cqe_64byte_ena; 2486 2487 err_code = cq_validate_flags(attr->flags, dev->hw_attrs.uk_attrs.hw_rev); 2488 if (err_code) 2489 return err_code; 2490 2491 if (udata && (udata->inlen < IRDMA_CREATE_CQ_MIN_REQ_LEN || 2492 udata->outlen < IRDMA_CREATE_CQ_MIN_RESP_LEN)) 2493 return -EINVAL; 2494 2495 err_code = irdma_alloc_rsrc(rf, rf->allocated_cqs, rf->max_cq, &cq_num, 2496 &rf->next_cq); 2497 if (err_code) 2498 return err_code; 2499 2500 cq = &iwcq->sc_cq; 2501 cq->back_cq = iwcq; 2502 refcount_set(&iwcq->refcnt, 1); 2503 spin_lock_init(&iwcq->lock); 2504 INIT_LIST_HEAD(&iwcq->resize_list); 2505 INIT_LIST_HEAD(&iwcq->cmpl_generated); 2506 info.dev = dev; 2507 ukinfo->cq_size = max(entries, 4); 2508 ukinfo->cq_id = cq_num; 2509 cqe_64byte_ena = dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_64_BYTE_CQE ? 2510 true : false; 2511 ukinfo->avoid_mem_cflct = cqe_64byte_ena; 2512 iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size; 2513 if (attr->comp_vector < rf->ceqs_count) 2514 info.ceq_id = attr->comp_vector; 2515 info.ceq_id_valid = true; 2516 info.ceqe_mask = 1; 2517 info.type = IRDMA_CQ_TYPE_IWARP; 2518 info.vsi = &iwdev->vsi; 2519 2520 if (udata) { 2521 struct irdma_ucontext *ucontext; 2522 struct irdma_create_cq_req req = {}; 2523 struct irdma_cq_mr *cqmr; 2524 struct irdma_pbl *iwpbl; 2525 struct irdma_pbl *iwpbl_shadow; 2526 struct irdma_cq_mr *cqmr_shadow; 2527 2528 iwcq->user_mode = true; 2529 ucontext = 2530 rdma_udata_to_drv_context(udata, struct irdma_ucontext, 2531 ibucontext); 2532 if (ib_copy_from_udata(&req, udata, 2533 min(sizeof(req), udata->inlen))) { 2534 err_code = -EFAULT; 2535 goto cq_free_rsrc; 2536 } 2537 2538 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); 2539 iwpbl = irdma_get_pbl((unsigned long)req.user_cq_buf, 2540 &ucontext->cq_reg_mem_list); 2541 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); 2542 if (!iwpbl) { 2543 err_code = -EPROTO; 2544 goto cq_free_rsrc; 2545 } 2546 2547 cqmr = &iwpbl->cq_mr; 2548 2549 if (rf->sc_dev.hw_attrs.uk_attrs.feature_flags & 2550 IRDMA_FEATURE_CQ_RESIZE && !ucontext->legacy_mode) { 2551 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); 2552 iwpbl_shadow = irdma_get_pbl( 2553 (unsigned long)req.user_shadow_area, 2554 &ucontext->cq_reg_mem_list); 2555 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); 2556 2557 if (!iwpbl_shadow) { 2558 err_code = -EPROTO; 2559 goto cq_free_rsrc; 2560 } 2561 cqmr_shadow = &iwpbl_shadow->cq_mr; 2562 info.shadow_area_pa = cqmr_shadow->cq_pbl.addr; 2563 cqmr->split = true; 2564 } else { 2565 info.shadow_area_pa = cqmr->shadow; 2566 } 2567 if (iwpbl->pbl_allocated) { 2568 info.virtual_map = true; 2569 info.pbl_chunk_size = 1; 2570 info.first_pm_pbl_idx = cqmr->cq_pbl.idx; 2571 } else { 2572 info.cq_base_pa = cqmr->cq_pbl.addr; 2573 } 2574 } else { 2575 /* Kmode allocations */ 2576 int rsize; 2577 2578 if (entries < 1 || entries > rf->max_cqe) { 2579 err_code = -EINVAL; 2580 goto cq_free_rsrc; 2581 } 2582 2583 entries++; 2584 if (!cqe_64byte_ena && dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) 2585 entries *= 2; 2586 2587 if (entries & 1) 2588 entries += 1; /* cq size must be an even number */ 2589 2590 ukinfo->cq_size = entries; 2591 2592 if (cqe_64byte_ena) 2593 rsize = info.cq_uk_init_info.cq_size * sizeof(struct irdma_extended_cqe); 2594 else 2595 rsize = info.cq_uk_init_info.cq_size * sizeof(struct irdma_cqe); 2596 iwcq->kmem.size = ALIGN(round_up(rsize, 256), 256); 2597 iwcq->kmem.va = dma_alloc_coherent(dev->hw->device, 2598 iwcq->kmem.size, 2599 &iwcq->kmem.pa, GFP_KERNEL); 2600 if (!iwcq->kmem.va) { 2601 err_code = -ENOMEM; 2602 goto cq_free_rsrc; 2603 } 2604 2605 iwcq->kmem_shadow.size = ALIGN(IRDMA_SHADOW_AREA_SIZE << 3, 2606 64); 2607 iwcq->kmem_shadow.va = dma_alloc_coherent(dev->hw->device, 2608 iwcq->kmem_shadow.size, 2609 &iwcq->kmem_shadow.pa, 2610 GFP_KERNEL); 2611 if (!iwcq->kmem_shadow.va) { 2612 err_code = -ENOMEM; 2613 goto cq_free_rsrc; 2614 } 2615 info.shadow_area_pa = iwcq->kmem_shadow.pa; 2616 ukinfo->shadow_area = iwcq->kmem_shadow.va; 2617 ukinfo->cq_base = iwcq->kmem.va; 2618 info.cq_base_pa = iwcq->kmem.pa; 2619 } 2620 2621 info.shadow_read_threshold = min(info.cq_uk_init_info.cq_size / 2, 2622 (u32)IRDMA_MAX_CQ_READ_THRESH); 2623 2624 if (irdma_sc_cq_init(cq, &info)) { 2625 ibdev_dbg(&iwdev->ibdev, "VERBS: init cq fail\n"); 2626 err_code = -EPROTO; 2627 goto cq_free_rsrc; 2628 } 2629 2630 cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true); 2631 if (!cqp_request) { 2632 err_code = -ENOMEM; 2633 goto cq_free_rsrc; 2634 } 2635 2636 cqp_info = &cqp_request->info; 2637 cqp_info->cqp_cmd = IRDMA_OP_CQ_CREATE; 2638 cqp_info->post_sq = 1; 2639 cqp_info->in.u.cq_create.cq = cq; 2640 cqp_info->in.u.cq_create.check_overflow = true; 2641 cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request; 2642 err_code = irdma_handle_cqp_op(rf, cqp_request); 2643 irdma_put_cqp_request(&rf->cqp, cqp_request); 2644 if (err_code) 2645 goto cq_free_rsrc; 2646 2647 if (udata) { 2648 struct irdma_create_cq_resp resp = {}; 2649 2650 resp.cq_id = info.cq_uk_init_info.cq_id; 2651 resp.cq_size = info.cq_uk_init_info.cq_size; 2652 if (ib_copy_to_udata(udata, &resp, 2653 min(sizeof(resp), udata->outlen))) { 2654 ibdev_dbg(&iwdev->ibdev, 2655 "VERBS: copy to user data\n"); 2656 err_code = -EPROTO; 2657 goto cq_destroy; 2658 } 2659 } 2660 rf->cq_table[cq_num] = iwcq; 2661 init_completion(&iwcq->free_cq); 2662 2663 return 0; 2664 cq_destroy: 2665 irdma_cq_wq_destroy(rf, cq); 2666 cq_free_rsrc: 2667 irdma_cq_free_rsrc(rf, iwcq); 2668 2669 return err_code; 2670 } 2671 2672 /** 2673 * irdma_get_mr_access - get hw MR access permissions from IB access flags 2674 * @access: IB access flags 2675 * @hw_rev: Hardware version 2676 */ 2677 static inline u16 irdma_get_mr_access(int access, u8 hw_rev) 2678 { 2679 u16 hw_access = 0; 2680 2681 hw_access |= (access & IB_ACCESS_LOCAL_WRITE) ? 2682 IRDMA_ACCESS_FLAGS_LOCALWRITE : 0; 2683 hw_access |= (access & IB_ACCESS_REMOTE_WRITE) ? 2684 IRDMA_ACCESS_FLAGS_REMOTEWRITE : 0; 2685 hw_access |= (access & IB_ACCESS_REMOTE_READ) ? 2686 IRDMA_ACCESS_FLAGS_REMOTEREAD : 0; 2687 if (hw_rev >= IRDMA_GEN_3) { 2688 hw_access |= (access & IB_ACCESS_MW_BIND) ? 2689 IRDMA_ACCESS_FLAGS_BIND_WINDOW : 0; 2690 } 2691 hw_access |= (access & IB_ZERO_BASED) ? 2692 IRDMA_ACCESS_FLAGS_ZERO_BASED : 0; 2693 hw_access |= IRDMA_ACCESS_FLAGS_LOCALREAD; 2694 2695 return hw_access; 2696 } 2697 2698 /** 2699 * irdma_free_stag - free stag resource 2700 * @iwdev: irdma device 2701 * @stag: stag to free 2702 */ 2703 static void irdma_free_stag(struct irdma_device *iwdev, u32 stag) 2704 { 2705 u32 stag_idx; 2706 2707 stag_idx = (stag & iwdev->rf->mr_stagmask) >> IRDMA_CQPSQ_STAG_IDX_S; 2708 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_mrs, stag_idx); 2709 } 2710 2711 /** 2712 * irdma_create_stag - create random stag 2713 * @iwdev: irdma device 2714 */ 2715 static u32 irdma_create_stag(struct irdma_device *iwdev) 2716 { 2717 u32 stag = 0; 2718 u32 stag_index = 0; 2719 u32 next_stag_index; 2720 u32 driver_key; 2721 u32 random; 2722 u8 consumer_key; 2723 int ret; 2724 2725 get_random_bytes(&random, sizeof(random)); 2726 consumer_key = (u8)random; 2727 2728 driver_key = random & ~iwdev->rf->mr_stagmask; 2729 next_stag_index = (random & iwdev->rf->mr_stagmask) >> 8; 2730 next_stag_index %= iwdev->rf->max_mr; 2731 2732 ret = irdma_alloc_rsrc(iwdev->rf, iwdev->rf->allocated_mrs, 2733 iwdev->rf->max_mr, &stag_index, 2734 &next_stag_index); 2735 if (ret) 2736 return stag; 2737 stag = stag_index << IRDMA_CQPSQ_STAG_IDX_S; 2738 stag |= driver_key; 2739 stag += (u32)consumer_key; 2740 2741 return stag; 2742 } 2743 2744 /** 2745 * irdma_next_pbl_addr - Get next pbl address 2746 * @pbl: pointer to a pble 2747 * @pinfo: info pointer 2748 * @idx: index 2749 */ 2750 static inline u64 *irdma_next_pbl_addr(u64 *pbl, struct irdma_pble_info **pinfo, 2751 u32 *idx) 2752 { 2753 *idx += 1; 2754 if (!(*pinfo) || *idx != (*pinfo)->cnt) 2755 return ++pbl; 2756 *idx = 0; 2757 (*pinfo)++; 2758 2759 return (*pinfo)->addr; 2760 } 2761 2762 /** 2763 * irdma_copy_user_pgaddrs - copy user page address to pble's os locally 2764 * @iwmr: iwmr for IB's user page addresses 2765 * @pbl: ple pointer to save 1 level or 0 level pble 2766 * @level: indicated level 0, 1 or 2 2767 */ 2768 static void irdma_copy_user_pgaddrs(struct irdma_mr *iwmr, u64 *pbl, 2769 enum irdma_pble_level level) 2770 { 2771 struct ib_umem *region = iwmr->region; 2772 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 2773 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc; 2774 struct irdma_pble_info *pinfo; 2775 struct ib_block_iter biter; 2776 u32 idx = 0; 2777 u32 pbl_cnt = 0; 2778 2779 pinfo = (level == PBLE_LEVEL_1) ? NULL : palloc->level2.leaf; 2780 2781 if (iwmr->type == IRDMA_MEMREG_TYPE_QP) 2782 iwpbl->qp_mr.sq_page = sg_page(region->sgt_append.sgt.sgl); 2783 2784 rdma_umem_for_each_dma_block(region, &biter, iwmr->page_size) { 2785 *pbl = rdma_block_iter_dma_address(&biter); 2786 if (++pbl_cnt == palloc->total_cnt) 2787 break; 2788 pbl = irdma_next_pbl_addr(pbl, &pinfo, &idx); 2789 } 2790 } 2791 2792 /** 2793 * irdma_check_mem_contiguous - check if pbls stored in arr are contiguous 2794 * @arr: lvl1 pbl array 2795 * @npages: page count 2796 * @pg_size: page size 2797 * 2798 */ 2799 static bool irdma_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size) 2800 { 2801 u32 pg_idx; 2802 2803 for (pg_idx = 0; pg_idx < npages; pg_idx++) { 2804 if ((*arr + (pg_size * pg_idx)) != arr[pg_idx]) 2805 return false; 2806 } 2807 2808 return true; 2809 } 2810 2811 /** 2812 * irdma_check_mr_contiguous - check if MR is physically contiguous 2813 * @palloc: pbl allocation struct 2814 * @pg_size: page size 2815 */ 2816 static bool irdma_check_mr_contiguous(struct irdma_pble_alloc *palloc, 2817 u32 pg_size) 2818 { 2819 struct irdma_pble_level2 *lvl2 = &palloc->level2; 2820 struct irdma_pble_info *leaf = lvl2->leaf; 2821 u64 *arr = NULL; 2822 u64 *start_addr = NULL; 2823 int i; 2824 bool ret; 2825 2826 if (palloc->level == PBLE_LEVEL_1) { 2827 arr = palloc->level1.addr; 2828 ret = irdma_check_mem_contiguous(arr, palloc->total_cnt, 2829 pg_size); 2830 return ret; 2831 } 2832 2833 start_addr = leaf->addr; 2834 2835 for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) { 2836 arr = leaf->addr; 2837 if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr) 2838 return false; 2839 ret = irdma_check_mem_contiguous(arr, leaf->cnt, pg_size); 2840 if (!ret) 2841 return false; 2842 } 2843 2844 return true; 2845 } 2846 2847 /** 2848 * irdma_setup_pbles - copy user pg address to pble's 2849 * @rf: RDMA PCI function 2850 * @iwmr: mr pointer for this memory registration 2851 * @lvl: requested pble levels 2852 */ 2853 static int irdma_setup_pbles(struct irdma_pci_f *rf, struct irdma_mr *iwmr, 2854 u8 lvl) 2855 { 2856 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 2857 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc; 2858 struct irdma_pble_info *pinfo; 2859 u64 *pbl; 2860 int status; 2861 enum irdma_pble_level level = PBLE_LEVEL_1; 2862 2863 if (lvl) { 2864 status = irdma_get_pble(rf->pble_rsrc, palloc, iwmr->page_cnt, 2865 lvl); 2866 if (status) 2867 return status; 2868 2869 iwpbl->pbl_allocated = true; 2870 level = palloc->level; 2871 pinfo = (level == PBLE_LEVEL_1) ? &palloc->level1 : 2872 palloc->level2.leaf; 2873 pbl = pinfo->addr; 2874 } else { 2875 pbl = iwmr->pgaddrmem; 2876 } 2877 2878 irdma_copy_user_pgaddrs(iwmr, pbl, level); 2879 2880 if (lvl) 2881 iwmr->pgaddrmem[0] = *pbl; 2882 2883 return 0; 2884 } 2885 2886 /** 2887 * irdma_handle_q_mem - handle memory for qp and cq 2888 * @iwdev: irdma device 2889 * @req: information for q memory management 2890 * @iwpbl: pble struct 2891 * @lvl: pble level mask 2892 */ 2893 static int irdma_handle_q_mem(struct irdma_device *iwdev, 2894 struct irdma_mem_reg_req *req, 2895 struct irdma_pbl *iwpbl, u8 lvl) 2896 { 2897 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc; 2898 struct irdma_mr *iwmr = iwpbl->iwmr; 2899 struct irdma_qp_mr *qpmr = &iwpbl->qp_mr; 2900 struct irdma_cq_mr *cqmr = &iwpbl->cq_mr; 2901 struct irdma_srq_mr *srqmr = &iwpbl->srq_mr; 2902 struct irdma_hmc_pble *hmc_p; 2903 u64 *arr = iwmr->pgaddrmem; 2904 u32 pg_size, total; 2905 int err = 0; 2906 bool ret = true; 2907 2908 pg_size = iwmr->page_size; 2909 err = irdma_setup_pbles(iwdev->rf, iwmr, lvl); 2910 if (err) 2911 return err; 2912 2913 if (lvl) 2914 arr = palloc->level1.addr; 2915 2916 switch (iwmr->type) { 2917 case IRDMA_MEMREG_TYPE_QP: 2918 total = req->sq_pages + req->rq_pages; 2919 hmc_p = &qpmr->sq_pbl; 2920 qpmr->shadow = (dma_addr_t)arr[total]; 2921 /* Need to use physical address for RQ of QP 2922 * in case it is associated with SRQ. 2923 */ 2924 qpmr->rq_pa = (dma_addr_t)arr[req->sq_pages]; 2925 if (lvl) { 2926 ret = irdma_check_mem_contiguous(arr, req->sq_pages, 2927 pg_size); 2928 if (ret) 2929 ret = irdma_check_mem_contiguous(&arr[req->sq_pages], 2930 req->rq_pages, 2931 pg_size); 2932 } 2933 2934 if (!ret) { 2935 hmc_p->idx = palloc->level1.idx; 2936 hmc_p = &qpmr->rq_pbl; 2937 hmc_p->idx = palloc->level1.idx + req->sq_pages; 2938 } else { 2939 hmc_p->addr = arr[0]; 2940 hmc_p = &qpmr->rq_pbl; 2941 hmc_p->addr = arr[req->sq_pages]; 2942 } 2943 break; 2944 case IRDMA_MEMREG_TYPE_SRQ: 2945 hmc_p = &srqmr->srq_pbl; 2946 srqmr->shadow = (dma_addr_t)arr[req->rq_pages]; 2947 if (lvl) 2948 ret = irdma_check_mem_contiguous(arr, req->rq_pages, 2949 pg_size); 2950 2951 if (!ret) 2952 hmc_p->idx = palloc->level1.idx; 2953 else 2954 hmc_p->addr = arr[0]; 2955 break; 2956 case IRDMA_MEMREG_TYPE_CQ: 2957 hmc_p = &cqmr->cq_pbl; 2958 2959 if (!cqmr->split) 2960 cqmr->shadow = (dma_addr_t)arr[req->cq_pages]; 2961 2962 if (lvl) 2963 ret = irdma_check_mem_contiguous(arr, req->cq_pages, 2964 pg_size); 2965 2966 if (!ret) 2967 hmc_p->idx = palloc->level1.idx; 2968 else 2969 hmc_p->addr = arr[0]; 2970 break; 2971 default: 2972 ibdev_dbg(&iwdev->ibdev, "VERBS: MR type error\n"); 2973 err = -EINVAL; 2974 } 2975 2976 if (lvl && ret) { 2977 irdma_free_pble(iwdev->rf->pble_rsrc, palloc); 2978 iwpbl->pbl_allocated = false; 2979 } 2980 2981 return err; 2982 } 2983 2984 /** 2985 * irdma_hw_alloc_mw - create the hw memory window 2986 * @iwdev: irdma device 2987 * @iwmr: pointer to memory window info 2988 */ 2989 static int irdma_hw_alloc_mw(struct irdma_device *iwdev, struct irdma_mr *iwmr) 2990 { 2991 struct irdma_mw_alloc_info *info; 2992 struct irdma_pd *iwpd = to_iwpd(iwmr->ibmr.pd); 2993 struct irdma_cqp_request *cqp_request; 2994 struct cqp_cmds_info *cqp_info; 2995 int status; 2996 2997 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 2998 if (!cqp_request) 2999 return -ENOMEM; 3000 3001 cqp_info = &cqp_request->info; 3002 info = &cqp_info->in.u.mw_alloc.info; 3003 memset(info, 0, sizeof(*info)); 3004 if (iwmr->ibmw.type == IB_MW_TYPE_1) 3005 info->mw_wide = true; 3006 3007 info->page_size = PAGE_SIZE; 3008 info->mw_stag_index = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S; 3009 info->pd_id = iwpd->sc_pd.pd_id; 3010 info->remote_access = true; 3011 cqp_info->cqp_cmd = IRDMA_OP_MW_ALLOC; 3012 cqp_info->post_sq = 1; 3013 cqp_info->in.u.mw_alloc.dev = &iwdev->rf->sc_dev; 3014 cqp_info->in.u.mw_alloc.scratch = (uintptr_t)cqp_request; 3015 status = irdma_handle_cqp_op(iwdev->rf, cqp_request); 3016 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 3017 3018 return status; 3019 } 3020 3021 /** 3022 * irdma_alloc_mw - Allocate memory window 3023 * @ibmw: Memory Window 3024 * @udata: user data pointer 3025 */ 3026 static int irdma_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata) 3027 { 3028 struct irdma_device *iwdev = to_iwdev(ibmw->device); 3029 struct irdma_mr *iwmr = to_iwmw(ibmw); 3030 int err_code; 3031 u32 stag; 3032 3033 stag = irdma_create_stag(iwdev); 3034 if (!stag) 3035 return -ENOMEM; 3036 3037 iwmr->stag = stag; 3038 ibmw->rkey = stag; 3039 3040 err_code = irdma_hw_alloc_mw(iwdev, iwmr); 3041 if (err_code) { 3042 irdma_free_stag(iwdev, stag); 3043 return err_code; 3044 } 3045 3046 return 0; 3047 } 3048 3049 /** 3050 * irdma_dealloc_mw - Dealloc memory window 3051 * @ibmw: memory window structure. 3052 */ 3053 static int irdma_dealloc_mw(struct ib_mw *ibmw) 3054 { 3055 struct ib_pd *ibpd = ibmw->pd; 3056 struct irdma_pd *iwpd = to_iwpd(ibpd); 3057 struct irdma_mr *iwmr = to_iwmr((struct ib_mr *)ibmw); 3058 struct irdma_device *iwdev = to_iwdev(ibmw->device); 3059 struct irdma_cqp_request *cqp_request; 3060 struct cqp_cmds_info *cqp_info; 3061 struct irdma_dealloc_stag_info *info; 3062 3063 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 3064 if (!cqp_request) 3065 return -ENOMEM; 3066 3067 cqp_info = &cqp_request->info; 3068 info = &cqp_info->in.u.dealloc_stag.info; 3069 memset(info, 0, sizeof(*info)); 3070 info->pd_id = iwpd->sc_pd.pd_id; 3071 info->stag_idx = ibmw->rkey >> IRDMA_CQPSQ_STAG_IDX_S; 3072 info->mr = false; 3073 cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG; 3074 cqp_info->post_sq = 1; 3075 cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev; 3076 cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request; 3077 irdma_handle_cqp_op(iwdev->rf, cqp_request); 3078 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 3079 irdma_free_stag(iwdev, iwmr->stag); 3080 3081 return 0; 3082 } 3083 3084 /** 3085 * irdma_hw_alloc_stag - cqp command to allocate stag 3086 * @iwdev: irdma device 3087 * @iwmr: irdma mr pointer 3088 */ 3089 static int irdma_hw_alloc_stag(struct irdma_device *iwdev, 3090 struct irdma_mr *iwmr) 3091 { 3092 struct irdma_allocate_stag_info *info; 3093 struct ib_pd *pd = iwmr->ibmr.pd; 3094 struct irdma_pd *iwpd = to_iwpd(pd); 3095 int status; 3096 struct irdma_cqp_request *cqp_request; 3097 struct cqp_cmds_info *cqp_info; 3098 3099 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 3100 if (!cqp_request) 3101 return -ENOMEM; 3102 3103 cqp_info = &cqp_request->info; 3104 info = &cqp_info->in.u.alloc_stag.info; 3105 memset(info, 0, sizeof(*info)); 3106 info->page_size = PAGE_SIZE; 3107 info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S; 3108 info->pd_id = iwpd->sc_pd.pd_id; 3109 info->total_len = iwmr->len; 3110 info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY; 3111 info->remote_access = true; 3112 cqp_info->cqp_cmd = IRDMA_OP_ALLOC_STAG; 3113 cqp_info->post_sq = 1; 3114 cqp_info->in.u.alloc_stag.dev = &iwdev->rf->sc_dev; 3115 cqp_info->in.u.alloc_stag.scratch = (uintptr_t)cqp_request; 3116 status = irdma_handle_cqp_op(iwdev->rf, cqp_request); 3117 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 3118 if (status) 3119 return status; 3120 3121 iwmr->is_hwreg = 1; 3122 return 0; 3123 } 3124 3125 /** 3126 * irdma_alloc_mr - register stag for fast memory registration 3127 * @pd: ibpd pointer 3128 * @mr_type: memory for stag registrion 3129 * @max_num_sg: man number of pages 3130 */ 3131 static struct ib_mr *irdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, 3132 u32 max_num_sg) 3133 { 3134 struct irdma_device *iwdev = to_iwdev(pd->device); 3135 struct irdma_pble_alloc *palloc; 3136 struct irdma_pbl *iwpbl; 3137 struct irdma_mr *iwmr; 3138 u32 stag; 3139 int err_code; 3140 3141 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); 3142 if (!iwmr) 3143 return ERR_PTR(-ENOMEM); 3144 3145 stag = irdma_create_stag(iwdev); 3146 if (!stag) { 3147 err_code = -ENOMEM; 3148 goto err; 3149 } 3150 3151 iwmr->stag = stag; 3152 iwmr->ibmr.rkey = stag; 3153 iwmr->ibmr.lkey = stag; 3154 iwmr->ibmr.pd = pd; 3155 iwmr->ibmr.device = pd->device; 3156 iwpbl = &iwmr->iwpbl; 3157 iwpbl->iwmr = iwmr; 3158 iwmr->type = IRDMA_MEMREG_TYPE_MEM; 3159 palloc = &iwpbl->pble_alloc; 3160 iwmr->page_cnt = max_num_sg; 3161 /* Use system PAGE_SIZE as the sg page sizes are unknown at this point */ 3162 iwmr->len = max_num_sg * PAGE_SIZE; 3163 err_code = irdma_get_pble(iwdev->rf->pble_rsrc, palloc, iwmr->page_cnt, 3164 false); 3165 if (err_code) 3166 goto err_get_pble; 3167 3168 err_code = irdma_hw_alloc_stag(iwdev, iwmr); 3169 if (err_code) 3170 goto err_alloc_stag; 3171 3172 iwpbl->pbl_allocated = true; 3173 3174 return &iwmr->ibmr; 3175 err_alloc_stag: 3176 irdma_free_pble(iwdev->rf->pble_rsrc, palloc); 3177 err_get_pble: 3178 irdma_free_stag(iwdev, stag); 3179 err: 3180 kfree(iwmr); 3181 3182 return ERR_PTR(err_code); 3183 } 3184 3185 /** 3186 * irdma_set_page - populate pbl list for fmr 3187 * @ibmr: ib mem to access iwarp mr pointer 3188 * @addr: page dma address fro pbl list 3189 */ 3190 static int irdma_set_page(struct ib_mr *ibmr, u64 addr) 3191 { 3192 struct irdma_mr *iwmr = to_iwmr(ibmr); 3193 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3194 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc; 3195 u64 *pbl; 3196 3197 if (unlikely(iwmr->npages == iwmr->page_cnt)) 3198 return -ENOMEM; 3199 3200 if (palloc->level == PBLE_LEVEL_2) { 3201 struct irdma_pble_info *palloc_info = 3202 palloc->level2.leaf + (iwmr->npages >> PBLE_512_SHIFT); 3203 3204 palloc_info->addr[iwmr->npages & (PBLE_PER_PAGE - 1)] = addr; 3205 } else { 3206 pbl = palloc->level1.addr; 3207 pbl[iwmr->npages] = addr; 3208 } 3209 iwmr->npages++; 3210 3211 return 0; 3212 } 3213 3214 /** 3215 * irdma_map_mr_sg - map of sg list for fmr 3216 * @ibmr: ib mem to access iwarp mr pointer 3217 * @sg: scatter gather list 3218 * @sg_nents: number of sg pages 3219 * @sg_offset: scatter gather list for fmr 3220 */ 3221 static int irdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, 3222 int sg_nents, unsigned int *sg_offset) 3223 { 3224 struct irdma_mr *iwmr = to_iwmr(ibmr); 3225 3226 iwmr->npages = 0; 3227 3228 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, irdma_set_page); 3229 } 3230 3231 /** 3232 * irdma_hwreg_mr - send cqp command for memory registration 3233 * @iwdev: irdma device 3234 * @iwmr: irdma mr pointer 3235 * @access: access for MR 3236 */ 3237 static int irdma_hwreg_mr(struct irdma_device *iwdev, struct irdma_mr *iwmr, 3238 u16 access) 3239 { 3240 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3241 struct irdma_reg_ns_stag_info *stag_info; 3242 struct ib_pd *pd = iwmr->ibmr.pd; 3243 struct irdma_pd *iwpd = to_iwpd(pd); 3244 struct irdma_pble_alloc *palloc = &iwpbl->pble_alloc; 3245 struct irdma_cqp_request *cqp_request; 3246 struct cqp_cmds_info *cqp_info; 3247 int ret; 3248 3249 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 3250 if (!cqp_request) 3251 return -ENOMEM; 3252 3253 cqp_info = &cqp_request->info; 3254 stag_info = &cqp_info->in.u.mr_reg_non_shared.info; 3255 memset(stag_info, 0, sizeof(*stag_info)); 3256 stag_info->va = iwpbl->user_base; 3257 stag_info->stag_idx = iwmr->stag >> IRDMA_CQPSQ_STAG_IDX_S; 3258 stag_info->stag_key = (u8)iwmr->stag; 3259 stag_info->total_len = iwmr->len; 3260 stag_info->access_rights = irdma_get_mr_access(access, 3261 iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev); 3262 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_ATOMIC_OPS) 3263 stag_info->remote_atomics_en = (access & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; 3264 stag_info->pd_id = iwpd->sc_pd.pd_id; 3265 stag_info->all_memory = pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY; 3266 if (stag_info->access_rights & IRDMA_ACCESS_FLAGS_ZERO_BASED) 3267 stag_info->addr_type = IRDMA_ADDR_TYPE_ZERO_BASED; 3268 else 3269 stag_info->addr_type = IRDMA_ADDR_TYPE_VA_BASED; 3270 stag_info->page_size = iwmr->page_size; 3271 3272 if (iwpbl->pbl_allocated) { 3273 if (palloc->level == PBLE_LEVEL_1) { 3274 stag_info->first_pm_pbl_index = palloc->level1.idx; 3275 stag_info->chunk_size = 1; 3276 } else { 3277 stag_info->first_pm_pbl_index = palloc->level2.root.idx; 3278 stag_info->chunk_size = 3; 3279 } 3280 } else { 3281 stag_info->reg_addr_pa = iwmr->pgaddrmem[0]; 3282 } 3283 3284 cqp_info->cqp_cmd = IRDMA_OP_MR_REG_NON_SHARED; 3285 cqp_info->post_sq = 1; 3286 cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->rf->sc_dev; 3287 cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request; 3288 ret = irdma_handle_cqp_op(iwdev->rf, cqp_request); 3289 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 3290 3291 if (!ret) 3292 iwmr->is_hwreg = 1; 3293 3294 return ret; 3295 } 3296 3297 static int irdma_reg_user_mr_type_mem(struct irdma_mr *iwmr, int access, 3298 bool create_stag) 3299 { 3300 struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device); 3301 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3302 u32 stag = 0; 3303 u8 lvl; 3304 int err; 3305 3306 lvl = iwmr->page_cnt != 1 ? PBLE_LEVEL_1 | PBLE_LEVEL_2 : PBLE_LEVEL_0; 3307 3308 err = irdma_setup_pbles(iwdev->rf, iwmr, lvl); 3309 if (err) 3310 return err; 3311 3312 if (lvl) { 3313 err = irdma_check_mr_contiguous(&iwpbl->pble_alloc, 3314 iwmr->page_size); 3315 if (err) { 3316 irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc); 3317 iwpbl->pbl_allocated = false; 3318 } 3319 } 3320 3321 if (create_stag) { 3322 stag = irdma_create_stag(iwdev); 3323 if (!stag) { 3324 err = -ENOMEM; 3325 goto free_pble; 3326 } 3327 3328 iwmr->stag = stag; 3329 iwmr->ibmr.rkey = stag; 3330 iwmr->ibmr.lkey = stag; 3331 } 3332 3333 err = irdma_hwreg_mr(iwdev, iwmr, access); 3334 if (err) 3335 goto err_hwreg; 3336 3337 return 0; 3338 3339 err_hwreg: 3340 if (stag) 3341 irdma_free_stag(iwdev, stag); 3342 3343 free_pble: 3344 if (iwpbl->pble_alloc.level != PBLE_LEVEL_0 && iwpbl->pbl_allocated) 3345 irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc); 3346 3347 return err; 3348 } 3349 3350 static struct irdma_mr *irdma_alloc_iwmr(struct ib_umem *region, 3351 struct ib_pd *pd, u64 virt, 3352 enum irdma_memreg_type reg_type) 3353 { 3354 struct irdma_device *iwdev = to_iwdev(pd->device); 3355 struct irdma_pbl *iwpbl; 3356 struct irdma_mr *iwmr; 3357 unsigned long pgsz_bitmap; 3358 3359 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); 3360 if (!iwmr) 3361 return ERR_PTR(-ENOMEM); 3362 3363 iwpbl = &iwmr->iwpbl; 3364 iwpbl->iwmr = iwmr; 3365 iwmr->region = region; 3366 iwmr->ibmr.pd = pd; 3367 iwmr->ibmr.device = pd->device; 3368 iwmr->ibmr.iova = virt; 3369 iwmr->type = reg_type; 3370 3371 pgsz_bitmap = (reg_type == IRDMA_MEMREG_TYPE_MEM) ? 3372 iwdev->rf->sc_dev.hw_attrs.page_size_cap : SZ_4K; 3373 3374 iwmr->page_size = ib_umem_find_best_pgsz(region, pgsz_bitmap, virt); 3375 if (unlikely(!iwmr->page_size)) { 3376 kfree(iwmr); 3377 return ERR_PTR(-EOPNOTSUPP); 3378 } 3379 3380 iwmr->len = region->length; 3381 iwpbl->user_base = virt; 3382 iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size); 3383 3384 return iwmr; 3385 } 3386 3387 static void irdma_free_iwmr(struct irdma_mr *iwmr) 3388 { 3389 kfree(iwmr); 3390 } 3391 3392 static int irdma_reg_user_mr_type_qp(struct irdma_mem_reg_req req, 3393 struct ib_udata *udata, 3394 struct irdma_mr *iwmr) 3395 { 3396 struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device); 3397 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3398 struct irdma_ucontext *ucontext = NULL; 3399 unsigned long flags; 3400 u32 total; 3401 int err; 3402 u8 lvl; 3403 3404 /* iWarp: Catch page not starting on OS page boundary */ 3405 if (!rdma_protocol_roce(&iwdev->ibdev, 1) && 3406 ib_umem_offset(iwmr->region)) 3407 return -EINVAL; 3408 3409 total = req.sq_pages + req.rq_pages + 1; 3410 if (total > iwmr->page_cnt) 3411 return -EINVAL; 3412 3413 total = req.sq_pages + req.rq_pages; 3414 lvl = total > 2 ? PBLE_LEVEL_1 : PBLE_LEVEL_0; 3415 err = irdma_handle_q_mem(iwdev, &req, iwpbl, lvl); 3416 if (err) 3417 return err; 3418 3419 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext, 3420 ibucontext); 3421 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); 3422 list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list); 3423 iwpbl->on_list = true; 3424 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); 3425 3426 return 0; 3427 } 3428 3429 static int irdma_reg_user_mr_type_srq(struct irdma_mem_reg_req req, 3430 struct ib_udata *udata, 3431 struct irdma_mr *iwmr) 3432 { 3433 struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device); 3434 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3435 struct irdma_ucontext *ucontext; 3436 unsigned long flags; 3437 u32 total; 3438 int err; 3439 u8 lvl; 3440 3441 total = req.rq_pages + IRDMA_SHADOW_PGCNT; 3442 if (total > iwmr->page_cnt) 3443 return -EINVAL; 3444 3445 lvl = req.rq_pages > 1 ? PBLE_LEVEL_1 : PBLE_LEVEL_0; 3446 err = irdma_handle_q_mem(iwdev, &req, iwpbl, lvl); 3447 if (err) 3448 return err; 3449 3450 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext, 3451 ibucontext); 3452 spin_lock_irqsave(&ucontext->srq_reg_mem_list_lock, flags); 3453 list_add_tail(&iwpbl->list, &ucontext->srq_reg_mem_list); 3454 iwpbl->on_list = true; 3455 spin_unlock_irqrestore(&ucontext->srq_reg_mem_list_lock, flags); 3456 3457 return 0; 3458 } 3459 3460 static int irdma_reg_user_mr_type_cq(struct irdma_mem_reg_req req, 3461 struct ib_udata *udata, 3462 struct irdma_mr *iwmr) 3463 { 3464 struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device); 3465 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3466 struct irdma_ucontext *ucontext = NULL; 3467 u8 shadow_pgcnt = 1; 3468 unsigned long flags; 3469 u32 total; 3470 int err; 3471 u8 lvl; 3472 3473 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_CQ_RESIZE) 3474 shadow_pgcnt = 0; 3475 total = req.cq_pages + shadow_pgcnt; 3476 if (total > iwmr->page_cnt) 3477 return -EINVAL; 3478 3479 lvl = req.cq_pages > 1 ? PBLE_LEVEL_1 : PBLE_LEVEL_0; 3480 err = irdma_handle_q_mem(iwdev, &req, iwpbl, lvl); 3481 if (err) 3482 return err; 3483 3484 ucontext = rdma_udata_to_drv_context(udata, struct irdma_ucontext, 3485 ibucontext); 3486 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); 3487 list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list); 3488 iwpbl->on_list = true; 3489 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); 3490 3491 return 0; 3492 } 3493 3494 /** 3495 * irdma_reg_user_mr - Register a user memory region 3496 * @pd: ptr of pd 3497 * @start: virtual start address 3498 * @len: length of mr 3499 * @virt: virtual address 3500 * @access: access of mr 3501 * @dmah: dma handle 3502 * @udata: user data 3503 */ 3504 static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len, 3505 u64 virt, int access, 3506 struct ib_dmah *dmah, 3507 struct ib_udata *udata) 3508 { 3509 #define IRDMA_MEM_REG_MIN_REQ_LEN offsetofend(struct irdma_mem_reg_req, sq_pages) 3510 struct irdma_device *iwdev = to_iwdev(pd->device); 3511 struct irdma_mem_reg_req req = {}; 3512 struct ib_umem *region = NULL; 3513 struct irdma_mr *iwmr = NULL; 3514 int err; 3515 3516 if (dmah) 3517 return ERR_PTR(-EOPNOTSUPP); 3518 3519 if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size) 3520 return ERR_PTR(-EINVAL); 3521 3522 if (udata->inlen < IRDMA_MEM_REG_MIN_REQ_LEN) 3523 return ERR_PTR(-EINVAL); 3524 3525 region = ib_umem_get(pd->device, start, len, access); 3526 3527 if (IS_ERR(region)) { 3528 ibdev_dbg(&iwdev->ibdev, 3529 "VERBS: Failed to create ib_umem region\n"); 3530 return (struct ib_mr *)region; 3531 } 3532 3533 if (ib_copy_from_udata(&req, udata, min(sizeof(req), udata->inlen))) { 3534 ib_umem_release(region); 3535 return ERR_PTR(-EFAULT); 3536 } 3537 3538 iwmr = irdma_alloc_iwmr(region, pd, virt, req.reg_type); 3539 if (IS_ERR(iwmr)) { 3540 ib_umem_release(region); 3541 return (struct ib_mr *)iwmr; 3542 } 3543 3544 switch (req.reg_type) { 3545 case IRDMA_MEMREG_TYPE_QP: 3546 err = irdma_reg_user_mr_type_qp(req, udata, iwmr); 3547 if (err) 3548 goto error; 3549 3550 break; 3551 case IRDMA_MEMREG_TYPE_SRQ: 3552 err = irdma_reg_user_mr_type_srq(req, udata, iwmr); 3553 if (err) 3554 goto error; 3555 3556 break; 3557 case IRDMA_MEMREG_TYPE_CQ: 3558 err = irdma_reg_user_mr_type_cq(req, udata, iwmr); 3559 if (err) 3560 goto error; 3561 break; 3562 case IRDMA_MEMREG_TYPE_MEM: 3563 err = irdma_reg_user_mr_type_mem(iwmr, access, true); 3564 if (err) 3565 goto error; 3566 3567 break; 3568 default: 3569 err = -EINVAL; 3570 goto error; 3571 } 3572 3573 return &iwmr->ibmr; 3574 error: 3575 ib_umem_release(region); 3576 irdma_free_iwmr(iwmr); 3577 3578 return ERR_PTR(err); 3579 } 3580 3581 static struct ib_mr *irdma_reg_user_mr_dmabuf(struct ib_pd *pd, u64 start, 3582 u64 len, u64 virt, 3583 int fd, int access, 3584 struct ib_dmah *dmah, 3585 struct uverbs_attr_bundle *attrs) 3586 { 3587 struct irdma_device *iwdev = to_iwdev(pd->device); 3588 struct ib_umem_dmabuf *umem_dmabuf; 3589 struct irdma_mr *iwmr; 3590 int err; 3591 3592 if (dmah) 3593 return ERR_PTR(-EOPNOTSUPP); 3594 3595 if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size) 3596 return ERR_PTR(-EINVAL); 3597 3598 umem_dmabuf = ib_umem_dmabuf_get_pinned(pd->device, start, len, fd, access); 3599 if (IS_ERR(umem_dmabuf)) { 3600 ibdev_dbg(&iwdev->ibdev, "Failed to get dmabuf umem[%pe]\n", 3601 umem_dmabuf); 3602 return ERR_CAST(umem_dmabuf); 3603 } 3604 3605 iwmr = irdma_alloc_iwmr(&umem_dmabuf->umem, pd, virt, IRDMA_MEMREG_TYPE_MEM); 3606 if (IS_ERR(iwmr)) { 3607 err = PTR_ERR(iwmr); 3608 goto err_release; 3609 } 3610 3611 err = irdma_reg_user_mr_type_mem(iwmr, access, true); 3612 if (err) 3613 goto err_iwmr; 3614 3615 return &iwmr->ibmr; 3616 3617 err_iwmr: 3618 irdma_free_iwmr(iwmr); 3619 3620 err_release: 3621 ib_umem_release(&umem_dmabuf->umem); 3622 3623 return ERR_PTR(err); 3624 } 3625 3626 static int irdma_hwdereg_mr(struct ib_mr *ib_mr) 3627 { 3628 struct irdma_device *iwdev = to_iwdev(ib_mr->device); 3629 struct irdma_mr *iwmr = to_iwmr(ib_mr); 3630 struct irdma_pd *iwpd = to_iwpd(ib_mr->pd); 3631 struct irdma_dealloc_stag_info *info; 3632 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3633 struct irdma_cqp_request *cqp_request; 3634 struct cqp_cmds_info *cqp_info; 3635 int status; 3636 3637 /* Skip HW MR de-register when it is already de-registered 3638 * during an MR re-reregister and the re-registration fails 3639 */ 3640 if (!iwmr->is_hwreg) 3641 return 0; 3642 3643 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 3644 if (!cqp_request) 3645 return -ENOMEM; 3646 3647 cqp_info = &cqp_request->info; 3648 info = &cqp_info->in.u.dealloc_stag.info; 3649 memset(info, 0, sizeof(*info)); 3650 info->pd_id = iwpd->sc_pd.pd_id; 3651 info->stag_idx = ib_mr->rkey >> IRDMA_CQPSQ_STAG_IDX_S; 3652 info->mr = true; 3653 if (iwpbl->pbl_allocated) 3654 info->dealloc_pbl = true; 3655 3656 cqp_info->cqp_cmd = IRDMA_OP_DEALLOC_STAG; 3657 cqp_info->post_sq = 1; 3658 cqp_info->in.u.dealloc_stag.dev = &iwdev->rf->sc_dev; 3659 cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request; 3660 status = irdma_handle_cqp_op(iwdev->rf, cqp_request); 3661 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 3662 if (status) 3663 return status; 3664 3665 iwmr->is_hwreg = 0; 3666 return 0; 3667 } 3668 3669 /* 3670 * irdma_rereg_mr_trans - Re-register a user MR for a change translation. 3671 * @iwmr: ptr of iwmr 3672 * @start: virtual start address 3673 * @len: length of mr 3674 * @virt: virtual address 3675 * 3676 * Re-register a user memory region when a change translation is requested. 3677 * Re-register a new region while reusing the stag from the original registration. 3678 */ 3679 static int irdma_rereg_mr_trans(struct irdma_mr *iwmr, u64 start, u64 len, 3680 u64 virt) 3681 { 3682 struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device); 3683 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3684 struct ib_pd *pd = iwmr->ibmr.pd; 3685 struct ib_umem *region; 3686 int err; 3687 3688 region = ib_umem_get(pd->device, start, len, iwmr->access); 3689 if (IS_ERR(region)) 3690 return PTR_ERR(region); 3691 3692 iwmr->region = region; 3693 iwmr->ibmr.iova = virt; 3694 iwmr->ibmr.pd = pd; 3695 iwmr->page_size = ib_umem_find_best_pgsz(region, 3696 iwdev->rf->sc_dev.hw_attrs.page_size_cap, 3697 virt); 3698 if (unlikely(!iwmr->page_size)) { 3699 err = -EOPNOTSUPP; 3700 goto err; 3701 } 3702 3703 iwmr->len = region->length; 3704 iwpbl->user_base = virt; 3705 iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size); 3706 3707 err = irdma_reg_user_mr_type_mem(iwmr, iwmr->access, false); 3708 if (err) 3709 goto err; 3710 3711 return 0; 3712 3713 err: 3714 ib_umem_release(region); 3715 return err; 3716 } 3717 3718 /* 3719 * irdma_rereg_user_mr - Re-Register a user memory region(MR) 3720 * @ibmr: ib mem to access iwarp mr pointer 3721 * @flags: bit mask to indicate which of the attr's of MR modified 3722 * @start: virtual start address 3723 * @len: length of mr 3724 * @virt: virtual address 3725 * @new_access: bit mask of access flags 3726 * @new_pd: ptr of pd 3727 * @udata: user data 3728 * 3729 * Return: 3730 * NULL - Success, existing MR updated 3731 * ERR_PTR - error occurred 3732 */ 3733 static struct ib_mr *irdma_rereg_user_mr(struct ib_mr *ib_mr, int flags, 3734 u64 start, u64 len, u64 virt, 3735 int new_access, struct ib_pd *new_pd, 3736 struct ib_udata *udata) 3737 { 3738 struct irdma_device *iwdev = to_iwdev(ib_mr->device); 3739 struct irdma_mr *iwmr = to_iwmr(ib_mr); 3740 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3741 int ret; 3742 3743 if (len > iwdev->rf->sc_dev.hw_attrs.max_mr_size) 3744 return ERR_PTR(-EINVAL); 3745 3746 if (flags & ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) 3747 return ERR_PTR(-EOPNOTSUPP); 3748 3749 ret = irdma_hwdereg_mr(ib_mr); 3750 if (ret) 3751 return ERR_PTR(ret); 3752 3753 if (flags & IB_MR_REREG_ACCESS) 3754 iwmr->access = new_access; 3755 3756 if (flags & IB_MR_REREG_PD) { 3757 iwmr->ibmr.pd = new_pd; 3758 iwmr->ibmr.device = new_pd->device; 3759 } 3760 3761 if (flags & IB_MR_REREG_TRANS) { 3762 if (iwpbl->pbl_allocated) { 3763 irdma_free_pble(iwdev->rf->pble_rsrc, 3764 &iwpbl->pble_alloc); 3765 iwpbl->pbl_allocated = false; 3766 } 3767 if (iwmr->region) { 3768 ib_umem_release(iwmr->region); 3769 iwmr->region = NULL; 3770 } 3771 3772 ret = irdma_rereg_mr_trans(iwmr, start, len, virt); 3773 } else 3774 ret = irdma_hwreg_mr(iwdev, iwmr, iwmr->access); 3775 if (ret) 3776 return ERR_PTR(ret); 3777 3778 return NULL; 3779 } 3780 3781 /** 3782 * irdma_reg_phys_mr - register kernel physical memory 3783 * @pd: ibpd pointer 3784 * @addr: physical address of memory to register 3785 * @size: size of memory to register 3786 * @access: Access rights 3787 * @iova_start: start of virtual address for physical buffers 3788 */ 3789 struct ib_mr *irdma_reg_phys_mr(struct ib_pd *pd, u64 addr, u64 size, int access, 3790 u64 *iova_start) 3791 { 3792 struct irdma_device *iwdev = to_iwdev(pd->device); 3793 struct irdma_pbl *iwpbl; 3794 struct irdma_mr *iwmr; 3795 u32 stag; 3796 int ret; 3797 3798 iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL); 3799 if (!iwmr) 3800 return ERR_PTR(-ENOMEM); 3801 3802 iwmr->ibmr.pd = pd; 3803 iwmr->ibmr.device = pd->device; 3804 iwpbl = &iwmr->iwpbl; 3805 iwpbl->iwmr = iwmr; 3806 iwmr->type = IRDMA_MEMREG_TYPE_MEM; 3807 iwpbl->user_base = *iova_start; 3808 stag = irdma_create_stag(iwdev); 3809 if (!stag) { 3810 ret = -ENOMEM; 3811 goto err; 3812 } 3813 3814 iwmr->stag = stag; 3815 iwmr->ibmr.iova = *iova_start; 3816 iwmr->ibmr.rkey = stag; 3817 iwmr->ibmr.lkey = stag; 3818 iwmr->page_cnt = 1; 3819 iwmr->pgaddrmem[0] = addr; 3820 iwmr->len = size; 3821 iwmr->page_size = SZ_4K; 3822 ret = irdma_hwreg_mr(iwdev, iwmr, access); 3823 if (ret) { 3824 irdma_free_stag(iwdev, stag); 3825 goto err; 3826 } 3827 3828 return &iwmr->ibmr; 3829 3830 err: 3831 kfree(iwmr); 3832 3833 return ERR_PTR(ret); 3834 } 3835 3836 /** 3837 * irdma_get_dma_mr - register physical mem 3838 * @pd: ptr of pd 3839 * @acc: access for memory 3840 */ 3841 static struct ib_mr *irdma_get_dma_mr(struct ib_pd *pd, int acc) 3842 { 3843 u64 kva = 0; 3844 3845 return irdma_reg_phys_mr(pd, 0, 0, acc, &kva); 3846 } 3847 3848 /** 3849 * irdma_del_memlist - Deleting pbl list entries for CQ/QP 3850 * @iwmr: iwmr for IB's user page addresses 3851 * @ucontext: ptr to user context 3852 */ 3853 static void irdma_del_memlist(struct irdma_mr *iwmr, 3854 struct irdma_ucontext *ucontext) 3855 { 3856 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3857 unsigned long flags; 3858 3859 switch (iwmr->type) { 3860 case IRDMA_MEMREG_TYPE_CQ: 3861 spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); 3862 if (iwpbl->on_list) { 3863 iwpbl->on_list = false; 3864 list_del(&iwpbl->list); 3865 } 3866 spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags); 3867 break; 3868 case IRDMA_MEMREG_TYPE_QP: 3869 spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags); 3870 if (iwpbl->on_list) { 3871 iwpbl->on_list = false; 3872 list_del(&iwpbl->list); 3873 } 3874 spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags); 3875 break; 3876 case IRDMA_MEMREG_TYPE_SRQ: 3877 spin_lock_irqsave(&ucontext->srq_reg_mem_list_lock, flags); 3878 if (iwpbl->on_list) { 3879 iwpbl->on_list = false; 3880 list_del(&iwpbl->list); 3881 } 3882 spin_unlock_irqrestore(&ucontext->srq_reg_mem_list_lock, flags); 3883 break; 3884 default: 3885 break; 3886 } 3887 } 3888 3889 /** 3890 * irdma_dereg_mr - deregister mr 3891 * @ib_mr: mr ptr for dereg 3892 * @udata: user data 3893 */ 3894 static int irdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) 3895 { 3896 struct irdma_mr *iwmr = to_iwmr(ib_mr); 3897 struct irdma_device *iwdev = to_iwdev(ib_mr->device); 3898 struct irdma_pbl *iwpbl = &iwmr->iwpbl; 3899 int ret; 3900 3901 if (iwmr->type != IRDMA_MEMREG_TYPE_MEM) { 3902 if (iwmr->region) { 3903 struct irdma_ucontext *ucontext; 3904 3905 ucontext = rdma_udata_to_drv_context(udata, 3906 struct irdma_ucontext, 3907 ibucontext); 3908 irdma_del_memlist(iwmr, ucontext); 3909 } 3910 goto done; 3911 } 3912 3913 ret = irdma_hwdereg_mr(ib_mr); 3914 if (ret) 3915 return ret; 3916 3917 irdma_free_stag(iwdev, iwmr->stag); 3918 done: 3919 if (iwpbl->pbl_allocated) 3920 irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc); 3921 3922 if (iwmr->region) 3923 ib_umem_release(iwmr->region); 3924 3925 kfree(iwmr); 3926 3927 return 0; 3928 } 3929 3930 /** 3931 * irdma_post_send - kernel application wr 3932 * @ibqp: qp ptr for wr 3933 * @ib_wr: work request ptr 3934 * @bad_wr: return of bad wr if err 3935 */ 3936 static int irdma_post_send(struct ib_qp *ibqp, 3937 const struct ib_send_wr *ib_wr, 3938 const struct ib_send_wr **bad_wr) 3939 { 3940 struct irdma_qp *iwqp; 3941 struct irdma_qp_uk *ukqp; 3942 struct irdma_sc_dev *dev; 3943 struct irdma_post_sq_info info; 3944 int err = 0; 3945 unsigned long flags; 3946 bool inv_stag; 3947 struct irdma_ah *ah; 3948 3949 iwqp = to_iwqp(ibqp); 3950 ukqp = &iwqp->sc_qp.qp_uk; 3951 dev = &iwqp->iwdev->rf->sc_dev; 3952 3953 spin_lock_irqsave(&iwqp->lock, flags); 3954 while (ib_wr) { 3955 memset(&info, 0, sizeof(info)); 3956 inv_stag = false; 3957 info.wr_id = (ib_wr->wr_id); 3958 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all) 3959 info.signaled = true; 3960 if (ib_wr->send_flags & IB_SEND_FENCE) 3961 info.read_fence = true; 3962 switch (ib_wr->opcode) { 3963 case IB_WR_ATOMIC_CMP_AND_SWP: 3964 if (unlikely(!(dev->hw_attrs.uk_attrs.feature_flags & 3965 IRDMA_FEATURE_ATOMIC_OPS))) { 3966 err = -EINVAL; 3967 break; 3968 } 3969 info.op_type = IRDMA_OP_TYPE_ATOMIC_COMPARE_AND_SWAP; 3970 info.op.atomic_compare_swap.tagged_offset = ib_wr->sg_list[0].addr; 3971 info.op.atomic_compare_swap.remote_tagged_offset = 3972 atomic_wr(ib_wr)->remote_addr; 3973 info.op.atomic_compare_swap.swap_data_bytes = atomic_wr(ib_wr)->swap; 3974 info.op.atomic_compare_swap.compare_data_bytes = 3975 atomic_wr(ib_wr)->compare_add; 3976 info.op.atomic_compare_swap.stag = ib_wr->sg_list[0].lkey; 3977 info.op.atomic_compare_swap.remote_stag = atomic_wr(ib_wr)->rkey; 3978 err = irdma_uk_atomic_compare_swap(ukqp, &info, false); 3979 break; 3980 case IB_WR_ATOMIC_FETCH_AND_ADD: 3981 if (unlikely(!(dev->hw_attrs.uk_attrs.feature_flags & 3982 IRDMA_FEATURE_ATOMIC_OPS))) { 3983 err = -EINVAL; 3984 break; 3985 } 3986 info.op_type = IRDMA_OP_TYPE_ATOMIC_FETCH_AND_ADD; 3987 info.op.atomic_fetch_add.tagged_offset = ib_wr->sg_list[0].addr; 3988 info.op.atomic_fetch_add.remote_tagged_offset = 3989 atomic_wr(ib_wr)->remote_addr; 3990 info.op.atomic_fetch_add.fetch_add_data_bytes = 3991 atomic_wr(ib_wr)->compare_add; 3992 info.op.atomic_fetch_add.stag = ib_wr->sg_list[0].lkey; 3993 info.op.atomic_fetch_add.remote_stag = 3994 atomic_wr(ib_wr)->rkey; 3995 err = irdma_uk_atomic_fetch_add(ukqp, &info, false); 3996 break; 3997 case IB_WR_SEND_WITH_IMM: 3998 if (ukqp->qp_caps & IRDMA_SEND_WITH_IMM) { 3999 info.imm_data_valid = true; 4000 info.imm_data = ntohl(ib_wr->ex.imm_data); 4001 } else { 4002 err = -EINVAL; 4003 break; 4004 } 4005 fallthrough; 4006 case IB_WR_SEND: 4007 case IB_WR_SEND_WITH_INV: 4008 if (ib_wr->opcode == IB_WR_SEND || 4009 ib_wr->opcode == IB_WR_SEND_WITH_IMM) { 4010 if (ib_wr->send_flags & IB_SEND_SOLICITED) 4011 info.op_type = IRDMA_OP_TYPE_SEND_SOL; 4012 else 4013 info.op_type = IRDMA_OP_TYPE_SEND; 4014 } else { 4015 if (ib_wr->send_flags & IB_SEND_SOLICITED) 4016 info.op_type = IRDMA_OP_TYPE_SEND_SOL_INV; 4017 else 4018 info.op_type = IRDMA_OP_TYPE_SEND_INV; 4019 info.stag_to_inv = ib_wr->ex.invalidate_rkey; 4020 } 4021 4022 info.op.send.num_sges = ib_wr->num_sge; 4023 info.op.send.sg_list = ib_wr->sg_list; 4024 if (iwqp->ibqp.qp_type == IB_QPT_UD || 4025 iwqp->ibqp.qp_type == IB_QPT_GSI) { 4026 ah = to_iwah(ud_wr(ib_wr)->ah); 4027 info.op.send.ah_id = ah->sc_ah.ah_info.ah_idx; 4028 info.op.send.qkey = ud_wr(ib_wr)->remote_qkey; 4029 info.op.send.dest_qp = ud_wr(ib_wr)->remote_qpn; 4030 } 4031 4032 if (ib_wr->send_flags & IB_SEND_INLINE) 4033 err = irdma_uk_inline_send(ukqp, &info, false); 4034 else 4035 err = irdma_uk_send(ukqp, &info, false); 4036 break; 4037 case IB_WR_RDMA_WRITE_WITH_IMM: 4038 if (ukqp->qp_caps & IRDMA_WRITE_WITH_IMM) { 4039 info.imm_data_valid = true; 4040 info.imm_data = ntohl(ib_wr->ex.imm_data); 4041 } else { 4042 err = -EINVAL; 4043 break; 4044 } 4045 fallthrough; 4046 case IB_WR_RDMA_WRITE: 4047 if (ib_wr->send_flags & IB_SEND_SOLICITED) 4048 info.op_type = IRDMA_OP_TYPE_RDMA_WRITE_SOL; 4049 else 4050 info.op_type = IRDMA_OP_TYPE_RDMA_WRITE; 4051 4052 info.op.rdma_write.num_lo_sges = ib_wr->num_sge; 4053 info.op.rdma_write.lo_sg_list = ib_wr->sg_list; 4054 info.op.rdma_write.rem_addr.addr = 4055 rdma_wr(ib_wr)->remote_addr; 4056 info.op.rdma_write.rem_addr.lkey = rdma_wr(ib_wr)->rkey; 4057 if (ib_wr->send_flags & IB_SEND_INLINE) 4058 err = irdma_uk_inline_rdma_write(ukqp, &info, false); 4059 else 4060 err = irdma_uk_rdma_write(ukqp, &info, false); 4061 break; 4062 case IB_WR_RDMA_READ_WITH_INV: 4063 inv_stag = true; 4064 fallthrough; 4065 case IB_WR_RDMA_READ: 4066 if (ib_wr->num_sge > 4067 dev->hw_attrs.uk_attrs.max_hw_read_sges) { 4068 err = -EINVAL; 4069 break; 4070 } 4071 info.op_type = IRDMA_OP_TYPE_RDMA_READ; 4072 info.op.rdma_read.rem_addr.addr = rdma_wr(ib_wr)->remote_addr; 4073 info.op.rdma_read.rem_addr.lkey = rdma_wr(ib_wr)->rkey; 4074 info.op.rdma_read.lo_sg_list = (void *)ib_wr->sg_list; 4075 info.op.rdma_read.num_lo_sges = ib_wr->num_sge; 4076 err = irdma_uk_rdma_read(ukqp, &info, inv_stag, false); 4077 break; 4078 case IB_WR_LOCAL_INV: 4079 info.op_type = IRDMA_OP_TYPE_INV_STAG; 4080 info.local_fence = info.read_fence; 4081 info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey; 4082 err = irdma_uk_stag_local_invalidate(ukqp, &info, true); 4083 break; 4084 case IB_WR_REG_MR: { 4085 struct irdma_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr); 4086 struct irdma_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc; 4087 struct irdma_fast_reg_stag_info stag_info = {}; 4088 4089 stag_info.signaled = info.signaled; 4090 stag_info.read_fence = info.read_fence; 4091 stag_info.access_rights = 4092 irdma_get_mr_access(reg_wr(ib_wr)->access, 4093 dev->hw_attrs.uk_attrs.hw_rev); 4094 stag_info.stag_key = reg_wr(ib_wr)->key & 0xff; 4095 stag_info.stag_idx = reg_wr(ib_wr)->key >> 8; 4096 stag_info.page_size = reg_wr(ib_wr)->mr->page_size; 4097 stag_info.wr_id = ib_wr->wr_id; 4098 stag_info.addr_type = IRDMA_ADDR_TYPE_VA_BASED; 4099 stag_info.va = (void *)(uintptr_t)iwmr->ibmr.iova; 4100 stag_info.total_len = iwmr->ibmr.length; 4101 stag_info.reg_addr_pa = *palloc->level1.addr; 4102 stag_info.first_pm_pbl_index = palloc->level1.idx; 4103 stag_info.local_fence = ib_wr->send_flags & IB_SEND_FENCE; 4104 if (iwmr->npages > IRDMA_MIN_PAGES_PER_FMR) 4105 stag_info.chunk_size = 1; 4106 err = irdma_sc_mr_fast_register(&iwqp->sc_qp, &stag_info, 4107 true); 4108 break; 4109 } 4110 default: 4111 err = -EINVAL; 4112 ibdev_dbg(&iwqp->iwdev->ibdev, 4113 "VERBS: upost_send bad opcode = 0x%x\n", 4114 ib_wr->opcode); 4115 break; 4116 } 4117 4118 if (err) 4119 break; 4120 ib_wr = ib_wr->next; 4121 } 4122 4123 if (!iwqp->flush_issued) { 4124 if (iwqp->hw_iwarp_state <= IRDMA_QP_STATE_RTS) 4125 irdma_uk_qp_post_wr(ukqp); 4126 spin_unlock_irqrestore(&iwqp->lock, flags); 4127 } else { 4128 spin_unlock_irqrestore(&iwqp->lock, flags); 4129 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush, 4130 msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS)); 4131 } 4132 4133 if (err) 4134 *bad_wr = ib_wr; 4135 4136 return err; 4137 } 4138 4139 /** 4140 * irdma_post_srq_recv - post receive wr for kernel application 4141 * @ibsrq: ib srq pointer 4142 * @ib_wr: work request for receive 4143 * @bad_wr: bad wr caused an error 4144 */ 4145 static int irdma_post_srq_recv(struct ib_srq *ibsrq, 4146 const struct ib_recv_wr *ib_wr, 4147 const struct ib_recv_wr **bad_wr) 4148 { 4149 struct irdma_srq *iwsrq = to_iwsrq(ibsrq); 4150 struct irdma_srq_uk *uksrq = &iwsrq->sc_srq.srq_uk; 4151 struct irdma_post_rq_info post_recv = {}; 4152 unsigned long flags; 4153 int err = 0; 4154 4155 spin_lock_irqsave(&iwsrq->lock, flags); 4156 while (ib_wr) { 4157 if (ib_wr->num_sge > uksrq->max_srq_frag_cnt) { 4158 err = -EINVAL; 4159 goto out; 4160 } 4161 post_recv.num_sges = ib_wr->num_sge; 4162 post_recv.wr_id = ib_wr->wr_id; 4163 post_recv.sg_list = ib_wr->sg_list; 4164 err = irdma_uk_srq_post_receive(uksrq, &post_recv); 4165 if (err) 4166 goto out; 4167 4168 ib_wr = ib_wr->next; 4169 } 4170 4171 out: 4172 spin_unlock_irqrestore(&iwsrq->lock, flags); 4173 4174 if (err) 4175 *bad_wr = ib_wr; 4176 4177 return err; 4178 } 4179 4180 /** 4181 * irdma_post_recv - post receive wr for kernel application 4182 * @ibqp: ib qp pointer 4183 * @ib_wr: work request for receive 4184 * @bad_wr: bad wr caused an error 4185 */ 4186 static int irdma_post_recv(struct ib_qp *ibqp, 4187 const struct ib_recv_wr *ib_wr, 4188 const struct ib_recv_wr **bad_wr) 4189 { 4190 struct irdma_qp *iwqp; 4191 struct irdma_qp_uk *ukqp; 4192 struct irdma_post_rq_info post_recv = {}; 4193 unsigned long flags; 4194 int err = 0; 4195 4196 iwqp = to_iwqp(ibqp); 4197 ukqp = &iwqp->sc_qp.qp_uk; 4198 4199 if (ukqp->srq_uk) { 4200 *bad_wr = ib_wr; 4201 return -EINVAL; 4202 } 4203 4204 spin_lock_irqsave(&iwqp->lock, flags); 4205 while (ib_wr) { 4206 post_recv.num_sges = ib_wr->num_sge; 4207 post_recv.wr_id = ib_wr->wr_id; 4208 post_recv.sg_list = ib_wr->sg_list; 4209 err = irdma_uk_post_receive(ukqp, &post_recv); 4210 if (err) { 4211 ibdev_dbg(&iwqp->iwdev->ibdev, 4212 "VERBS: post_recv err %d\n", err); 4213 goto out; 4214 } 4215 4216 ib_wr = ib_wr->next; 4217 } 4218 4219 out: 4220 spin_unlock_irqrestore(&iwqp->lock, flags); 4221 if (iwqp->flush_issued) 4222 mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush, 4223 msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS)); 4224 4225 if (err) 4226 *bad_wr = ib_wr; 4227 4228 return err; 4229 } 4230 4231 /** 4232 * irdma_flush_err_to_ib_wc_status - return change flush error code to IB status 4233 * @opcode: iwarp flush code 4234 */ 4235 static enum ib_wc_status irdma_flush_err_to_ib_wc_status(enum irdma_flush_opcode opcode) 4236 { 4237 switch (opcode) { 4238 case FLUSH_PROT_ERR: 4239 return IB_WC_LOC_PROT_ERR; 4240 case FLUSH_REM_ACCESS_ERR: 4241 return IB_WC_REM_ACCESS_ERR; 4242 case FLUSH_LOC_QP_OP_ERR: 4243 return IB_WC_LOC_QP_OP_ERR; 4244 case FLUSH_REM_OP_ERR: 4245 return IB_WC_REM_OP_ERR; 4246 case FLUSH_LOC_LEN_ERR: 4247 return IB_WC_LOC_LEN_ERR; 4248 case FLUSH_GENERAL_ERR: 4249 return IB_WC_WR_FLUSH_ERR; 4250 case FLUSH_RETRY_EXC_ERR: 4251 return IB_WC_RETRY_EXC_ERR; 4252 case FLUSH_MW_BIND_ERR: 4253 return IB_WC_MW_BIND_ERR; 4254 case FLUSH_REM_INV_REQ_ERR: 4255 return IB_WC_REM_INV_REQ_ERR; 4256 case FLUSH_RNR_RETRY_EXC_ERR: 4257 return IB_WC_RNR_RETRY_EXC_ERR; 4258 case FLUSH_FATAL_ERR: 4259 default: 4260 return IB_WC_FATAL_ERR; 4261 } 4262 } 4263 4264 /** 4265 * irdma_process_cqe - process cqe info 4266 * @entry: processed cqe 4267 * @cq_poll_info: cqe info 4268 */ 4269 static void irdma_process_cqe(struct ib_wc *entry, 4270 struct irdma_cq_poll_info *cq_poll_info) 4271 { 4272 struct irdma_sc_qp *qp; 4273 4274 entry->wc_flags = 0; 4275 entry->pkey_index = 0; 4276 entry->wr_id = cq_poll_info->wr_id; 4277 4278 qp = cq_poll_info->qp_handle; 4279 entry->qp = qp->qp_uk.back_qp; 4280 4281 if (cq_poll_info->error) { 4282 entry->status = (cq_poll_info->comp_status == IRDMA_COMPL_STATUS_FLUSHED) ? 4283 irdma_flush_err_to_ib_wc_status(cq_poll_info->minor_err) : IB_WC_GENERAL_ERR; 4284 4285 entry->vendor_err = cq_poll_info->major_err << 16 | 4286 cq_poll_info->minor_err; 4287 } else { 4288 entry->status = IB_WC_SUCCESS; 4289 if (cq_poll_info->imm_valid) { 4290 entry->ex.imm_data = htonl(cq_poll_info->imm_data); 4291 entry->wc_flags |= IB_WC_WITH_IMM; 4292 } 4293 if (cq_poll_info->ud_smac_valid) { 4294 ether_addr_copy(entry->smac, cq_poll_info->ud_smac); 4295 entry->wc_flags |= IB_WC_WITH_SMAC; 4296 } 4297 4298 if (cq_poll_info->ud_vlan_valid) { 4299 u16 vlan = cq_poll_info->ud_vlan & VLAN_VID_MASK; 4300 4301 entry->sl = cq_poll_info->ud_vlan >> VLAN_PRIO_SHIFT; 4302 if (vlan) { 4303 entry->vlan_id = vlan; 4304 entry->wc_flags |= IB_WC_WITH_VLAN; 4305 } 4306 } else { 4307 entry->sl = 0; 4308 } 4309 } 4310 4311 if (cq_poll_info->q_type == IRDMA_CQE_QTYPE_SQ) { 4312 set_ib_wc_op_sq(cq_poll_info, entry); 4313 } else { 4314 if (qp->dev->hw_attrs.uk_attrs.hw_rev <= IRDMA_GEN_2) 4315 set_ib_wc_op_rq(cq_poll_info, entry, 4316 qp->qp_uk.qp_caps & IRDMA_SEND_WITH_IMM ? 4317 true : false); 4318 else 4319 set_ib_wc_op_rq_gen_3(cq_poll_info, entry); 4320 if (qp->qp_uk.qp_type != IRDMA_QP_TYPE_ROCE_UD && 4321 cq_poll_info->stag_invalid_set) { 4322 entry->ex.invalidate_rkey = cq_poll_info->inv_stag; 4323 entry->wc_flags |= IB_WC_WITH_INVALIDATE; 4324 } 4325 } 4326 4327 if (qp->qp_uk.qp_type == IRDMA_QP_TYPE_ROCE_UD) { 4328 entry->src_qp = cq_poll_info->ud_src_qpn; 4329 entry->slid = 0; 4330 entry->wc_flags |= 4331 (IB_WC_GRH | IB_WC_WITH_NETWORK_HDR_TYPE); 4332 entry->network_hdr_type = cq_poll_info->ipv4 ? 4333 RDMA_NETWORK_IPV4 : 4334 RDMA_NETWORK_IPV6; 4335 } else { 4336 entry->src_qp = cq_poll_info->qp_id; 4337 } 4338 4339 entry->byte_len = cq_poll_info->bytes_xfered; 4340 } 4341 4342 /** 4343 * irdma_poll_one - poll one entry of the CQ 4344 * @ukcq: ukcq to poll 4345 * @cur_cqe: current CQE info to be filled in 4346 * @entry: ibv_wc object to be filled for non-extended CQ or NULL for extended CQ 4347 * 4348 * Returns the internal irdma device error code or 0 on success 4349 */ 4350 static inline int irdma_poll_one(struct irdma_cq_uk *ukcq, 4351 struct irdma_cq_poll_info *cur_cqe, 4352 struct ib_wc *entry) 4353 { 4354 int ret = irdma_uk_cq_poll_cmpl(ukcq, cur_cqe); 4355 4356 if (ret) 4357 return ret; 4358 4359 irdma_process_cqe(entry, cur_cqe); 4360 4361 return 0; 4362 } 4363 4364 /** 4365 * __irdma_poll_cq - poll cq for completion (kernel apps) 4366 * @iwcq: cq to poll 4367 * @num_entries: number of entries to poll 4368 * @entry: wr of a completed entry 4369 */ 4370 static int __irdma_poll_cq(struct irdma_cq *iwcq, int num_entries, struct ib_wc *entry) 4371 { 4372 struct list_head *tmp_node, *list_node; 4373 struct irdma_cq_buf *last_buf = NULL; 4374 struct irdma_cq_poll_info *cur_cqe = &iwcq->cur_cqe; 4375 struct irdma_cq_buf *cq_buf; 4376 int ret; 4377 struct irdma_device *iwdev; 4378 struct irdma_cq_uk *ukcq; 4379 bool cq_new_cqe = false; 4380 int resized_bufs = 0; 4381 int npolled = 0; 4382 4383 iwdev = to_iwdev(iwcq->ibcq.device); 4384 ukcq = &iwcq->sc_cq.cq_uk; 4385 4386 /* go through the list of previously resized CQ buffers */ 4387 list_for_each_safe(list_node, tmp_node, &iwcq->resize_list) { 4388 cq_buf = container_of(list_node, struct irdma_cq_buf, list); 4389 while (npolled < num_entries) { 4390 ret = irdma_poll_one(&cq_buf->cq_uk, cur_cqe, entry + npolled); 4391 if (!ret) { 4392 ++npolled; 4393 cq_new_cqe = true; 4394 continue; 4395 } 4396 if (ret == -ENOENT) 4397 break; 4398 /* QP using the CQ is destroyed. Skip reporting this CQE */ 4399 if (ret == -EFAULT) { 4400 cq_new_cqe = true; 4401 continue; 4402 } 4403 goto error; 4404 } 4405 4406 /* save the resized CQ buffer which received the last cqe */ 4407 if (cq_new_cqe) 4408 last_buf = cq_buf; 4409 cq_new_cqe = false; 4410 } 4411 4412 /* check the current CQ for new cqes */ 4413 while (npolled < num_entries) { 4414 ret = irdma_poll_one(ukcq, cur_cqe, entry + npolled); 4415 if (ret == -ENOENT) { 4416 ret = irdma_generated_cmpls(iwcq, cur_cqe); 4417 if (!ret) 4418 irdma_process_cqe(entry + npolled, cur_cqe); 4419 } 4420 if (!ret) { 4421 ++npolled; 4422 cq_new_cqe = true; 4423 continue; 4424 } 4425 4426 if (ret == -ENOENT) 4427 break; 4428 /* QP using the CQ is destroyed. Skip reporting this CQE */ 4429 if (ret == -EFAULT) { 4430 cq_new_cqe = true; 4431 continue; 4432 } 4433 goto error; 4434 } 4435 4436 if (cq_new_cqe) 4437 /* all previous CQ resizes are complete */ 4438 resized_bufs = irdma_process_resize_list(iwcq, iwdev, NULL); 4439 else if (last_buf) 4440 /* only CQ resizes up to the last_buf are complete */ 4441 resized_bufs = irdma_process_resize_list(iwcq, iwdev, last_buf); 4442 if (resized_bufs) 4443 /* report to the HW the number of complete CQ resizes */ 4444 irdma_uk_cq_set_resized_cnt(ukcq, resized_bufs); 4445 4446 return npolled; 4447 error: 4448 ibdev_dbg(&iwdev->ibdev, "%s: Error polling CQ, irdma_err: %d\n", 4449 __func__, ret); 4450 4451 return ret; 4452 } 4453 4454 /** 4455 * irdma_poll_cq - poll cq for completion (kernel apps) 4456 * @ibcq: cq to poll 4457 * @num_entries: number of entries to poll 4458 * @entry: wr of a completed entry 4459 */ 4460 static int irdma_poll_cq(struct ib_cq *ibcq, int num_entries, 4461 struct ib_wc *entry) 4462 { 4463 struct irdma_cq *iwcq; 4464 unsigned long flags; 4465 int ret; 4466 4467 iwcq = to_iwcq(ibcq); 4468 4469 spin_lock_irqsave(&iwcq->lock, flags); 4470 ret = __irdma_poll_cq(iwcq, num_entries, entry); 4471 spin_unlock_irqrestore(&iwcq->lock, flags); 4472 4473 return ret; 4474 } 4475 4476 /** 4477 * irdma_req_notify_cq - arm cq kernel application 4478 * @ibcq: cq to arm 4479 * @notify_flags: notofication flags 4480 */ 4481 static int irdma_req_notify_cq(struct ib_cq *ibcq, 4482 enum ib_cq_notify_flags notify_flags) 4483 { 4484 struct irdma_cq *iwcq; 4485 struct irdma_cq_uk *ukcq; 4486 unsigned long flags; 4487 enum irdma_cmpl_notify cq_notify; 4488 bool promo_event = false; 4489 int ret = 0; 4490 4491 cq_notify = notify_flags == IB_CQ_SOLICITED ? 4492 IRDMA_CQ_COMPL_SOLICITED : IRDMA_CQ_COMPL_EVENT; 4493 iwcq = to_iwcq(ibcq); 4494 ukcq = &iwcq->sc_cq.cq_uk; 4495 4496 spin_lock_irqsave(&iwcq->lock, flags); 4497 /* Only promote to arm the CQ for any event if the last arm event was solicited. */ 4498 if (iwcq->last_notify == IRDMA_CQ_COMPL_SOLICITED && notify_flags != IB_CQ_SOLICITED) 4499 promo_event = true; 4500 4501 if (!atomic_cmpxchg(&iwcq->armed, 0, 1) || promo_event) { 4502 iwcq->last_notify = cq_notify; 4503 irdma_uk_cq_request_notification(ukcq, cq_notify); 4504 } 4505 4506 if ((notify_flags & IB_CQ_REPORT_MISSED_EVENTS) && 4507 (!irdma_cq_empty(iwcq) || !list_empty(&iwcq->cmpl_generated))) 4508 ret = 1; 4509 spin_unlock_irqrestore(&iwcq->lock, flags); 4510 4511 return ret; 4512 } 4513 4514 static const struct rdma_stat_desc irdma_hw_stat_descs[] = { 4515 /* gen1 - 32-bit */ 4516 [IRDMA_HW_STAT_INDEX_IP4RXDISCARD].name = "ip4InDiscards", 4517 [IRDMA_HW_STAT_INDEX_IP4RXTRUNC].name = "ip4InTruncatedPkts", 4518 [IRDMA_HW_STAT_INDEX_IP4TXNOROUTE].name = "ip4OutNoRoutes", 4519 [IRDMA_HW_STAT_INDEX_IP6RXDISCARD].name = "ip6InDiscards", 4520 [IRDMA_HW_STAT_INDEX_IP6RXTRUNC].name = "ip6InTruncatedPkts", 4521 [IRDMA_HW_STAT_INDEX_IP6TXNOROUTE].name = "ip6OutNoRoutes", 4522 [IRDMA_HW_STAT_INDEX_RXVLANERR].name = "rxVlanErrors", 4523 /* gen1 - 64-bit */ 4524 [IRDMA_HW_STAT_INDEX_IP4RXOCTS].name = "ip4InOctets", 4525 [IRDMA_HW_STAT_INDEX_IP4RXPKTS].name = "ip4InPkts", 4526 [IRDMA_HW_STAT_INDEX_IP4RXFRAGS].name = "ip4InReasmRqd", 4527 [IRDMA_HW_STAT_INDEX_IP4RXMCPKTS].name = "ip4InMcastPkts", 4528 [IRDMA_HW_STAT_INDEX_IP4TXOCTS].name = "ip4OutOctets", 4529 [IRDMA_HW_STAT_INDEX_IP4TXPKTS].name = "ip4OutPkts", 4530 [IRDMA_HW_STAT_INDEX_IP4TXFRAGS].name = "ip4OutSegRqd", 4531 [IRDMA_HW_STAT_INDEX_IP4TXMCPKTS].name = "ip4OutMcastPkts", 4532 [IRDMA_HW_STAT_INDEX_IP6RXOCTS].name = "ip6InOctets", 4533 [IRDMA_HW_STAT_INDEX_IP6RXPKTS].name = "ip6InPkts", 4534 [IRDMA_HW_STAT_INDEX_IP6RXFRAGS].name = "ip6InReasmRqd", 4535 [IRDMA_HW_STAT_INDEX_IP6RXMCPKTS].name = "ip6InMcastPkts", 4536 [IRDMA_HW_STAT_INDEX_IP6TXOCTS].name = "ip6OutOctets", 4537 [IRDMA_HW_STAT_INDEX_IP6TXPKTS].name = "ip6OutPkts", 4538 [IRDMA_HW_STAT_INDEX_IP6TXFRAGS].name = "ip6OutSegRqd", 4539 [IRDMA_HW_STAT_INDEX_IP6TXMCPKTS].name = "ip6OutMcastPkts", 4540 [IRDMA_HW_STAT_INDEX_RDMARXRDS].name = "InRdmaReads", 4541 [IRDMA_HW_STAT_INDEX_RDMARXSNDS].name = "InRdmaSends", 4542 [IRDMA_HW_STAT_INDEX_RDMARXWRS].name = "InRdmaWrites", 4543 [IRDMA_HW_STAT_INDEX_RDMATXRDS].name = "OutRdmaReads", 4544 [IRDMA_HW_STAT_INDEX_RDMATXSNDS].name = "OutRdmaSends", 4545 [IRDMA_HW_STAT_INDEX_RDMATXWRS].name = "OutRdmaWrites", 4546 [IRDMA_HW_STAT_INDEX_RDMAVBND].name = "RdmaBnd", 4547 [IRDMA_HW_STAT_INDEX_RDMAVINV].name = "RdmaInv", 4548 4549 /* gen2 - 32-bit */ 4550 [IRDMA_HW_STAT_INDEX_RXRPCNPHANDLED].name = "cnpHandled", 4551 [IRDMA_HW_STAT_INDEX_RXRPCNPIGNORED].name = "cnpIgnored", 4552 [IRDMA_HW_STAT_INDEX_TXNPCNPSENT].name = "cnpSent", 4553 /* gen2 - 64-bit */ 4554 [IRDMA_HW_STAT_INDEX_IP4RXMCOCTS].name = "ip4InMcastOctets", 4555 [IRDMA_HW_STAT_INDEX_IP4TXMCOCTS].name = "ip4OutMcastOctets", 4556 [IRDMA_HW_STAT_INDEX_IP6RXMCOCTS].name = "ip6InMcastOctets", 4557 [IRDMA_HW_STAT_INDEX_IP6TXMCOCTS].name = "ip6OutMcastOctets", 4558 [IRDMA_HW_STAT_INDEX_UDPRXPKTS].name = "RxUDP", 4559 [IRDMA_HW_STAT_INDEX_UDPTXPKTS].name = "TxUDP", 4560 [IRDMA_HW_STAT_INDEX_RXNPECNMARKEDPKTS].name = "RxECNMrkd", 4561 [IRDMA_HW_STAT_INDEX_TCPRTXSEG].name = "RetransSegs", 4562 [IRDMA_HW_STAT_INDEX_TCPRXOPTERR].name = "InOptErrors", 4563 [IRDMA_HW_STAT_INDEX_TCPRXPROTOERR].name = "InProtoErrors", 4564 [IRDMA_HW_STAT_INDEX_TCPRXSEGS].name = "InSegs", 4565 [IRDMA_HW_STAT_INDEX_TCPTXSEG].name = "OutSegs", 4566 4567 /* gen3 */ 4568 [IRDMA_HW_STAT_INDEX_RNR_SENT].name = "RNR sent", 4569 [IRDMA_HW_STAT_INDEX_RNR_RCVD].name = "RNR received", 4570 [IRDMA_HW_STAT_INDEX_RDMAORDLMTCNT].name = "ord limit count", 4571 [IRDMA_HW_STAT_INDEX_RDMAIRDLMTCNT].name = "ird limit count", 4572 [IRDMA_HW_STAT_INDEX_RDMARXATS].name = "Rx atomics", 4573 [IRDMA_HW_STAT_INDEX_RDMATXATS].name = "Tx atomics", 4574 [IRDMA_HW_STAT_INDEX_NAKSEQERR].name = "Nak Sequence Error", 4575 [IRDMA_HW_STAT_INDEX_NAKSEQERR_IMPLIED].name = "Nak Sequence Error Implied", 4576 [IRDMA_HW_STAT_INDEX_RTO].name = "RTO", 4577 [IRDMA_HW_STAT_INDEX_RXOOOPKTS].name = "Rcvd Out of order packets", 4578 [IRDMA_HW_STAT_INDEX_ICRCERR].name = "CRC errors", 4579 }; 4580 4581 static int irdma_roce_port_immutable(struct ib_device *ibdev, u32 port_num, 4582 struct ib_port_immutable *immutable) 4583 { 4584 struct ib_port_attr attr; 4585 int err; 4586 4587 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 4588 err = ib_query_port(ibdev, port_num, &attr); 4589 if (err) 4590 return err; 4591 4592 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 4593 immutable->pkey_tbl_len = attr.pkey_tbl_len; 4594 immutable->gid_tbl_len = attr.gid_tbl_len; 4595 4596 return 0; 4597 } 4598 4599 static int irdma_iw_port_immutable(struct ib_device *ibdev, u32 port_num, 4600 struct ib_port_immutable *immutable) 4601 { 4602 struct ib_port_attr attr; 4603 int err; 4604 4605 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; 4606 err = ib_query_port(ibdev, port_num, &attr); 4607 if (err) 4608 return err; 4609 immutable->gid_tbl_len = attr.gid_tbl_len; 4610 4611 return 0; 4612 } 4613 4614 static void irdma_get_dev_fw_str(struct ib_device *dev, char *str) 4615 { 4616 struct irdma_device *iwdev = to_iwdev(dev); 4617 4618 snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u", 4619 irdma_fw_major_ver(&iwdev->rf->sc_dev), 4620 irdma_fw_minor_ver(&iwdev->rf->sc_dev)); 4621 } 4622 4623 /** 4624 * irdma_alloc_hw_port_stats - Allocate a hw stats structure 4625 * @ibdev: device pointer from stack 4626 * @port_num: port number 4627 */ 4628 static struct rdma_hw_stats *irdma_alloc_hw_port_stats(struct ib_device *ibdev, 4629 u32 port_num) 4630 { 4631 struct irdma_device *iwdev = to_iwdev(ibdev); 4632 struct irdma_sc_dev *dev = &iwdev->rf->sc_dev; 4633 4634 int num_counters = dev->hw_attrs.max_stat_idx; 4635 unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN; 4636 4637 return rdma_alloc_hw_stats_struct(irdma_hw_stat_descs, num_counters, 4638 lifespan); 4639 } 4640 4641 /** 4642 * irdma_get_hw_stats - Populates the rdma_hw_stats structure 4643 * @ibdev: device pointer from stack 4644 * @stats: stats pointer from stack 4645 * @port_num: port number 4646 * @index: which hw counter the stack is requesting we update 4647 */ 4648 static int irdma_get_hw_stats(struct ib_device *ibdev, 4649 struct rdma_hw_stats *stats, u32 port_num, 4650 int index) 4651 { 4652 struct irdma_device *iwdev = to_iwdev(ibdev); 4653 struct irdma_dev_hw_stats *hw_stats = &iwdev->vsi.pestat->hw_stats; 4654 4655 if (iwdev->rf->rdma_ver >= IRDMA_GEN_2) 4656 irdma_cqp_gather_stats_cmd(&iwdev->rf->sc_dev, iwdev->vsi.pestat, true); 4657 else 4658 irdma_cqp_gather_stats_gen1(&iwdev->rf->sc_dev, iwdev->vsi.pestat); 4659 4660 memcpy(&stats->value[0], hw_stats, sizeof(u64) * stats->num_counters); 4661 4662 return stats->num_counters; 4663 } 4664 4665 /** 4666 * irdma_query_gid - Query port GID 4667 * @ibdev: device pointer from stack 4668 * @port: port number 4669 * @index: Entry index 4670 * @gid: Global ID 4671 */ 4672 static int irdma_query_gid(struct ib_device *ibdev, u32 port, int index, 4673 union ib_gid *gid) 4674 { 4675 struct irdma_device *iwdev = to_iwdev(ibdev); 4676 4677 memset(gid->raw, 0, sizeof(gid->raw)); 4678 ether_addr_copy(gid->raw, iwdev->netdev->dev_addr); 4679 4680 return 0; 4681 } 4682 4683 /** 4684 * mcast_list_add - Add a new mcast item to list 4685 * @rf: RDMA PCI function 4686 * @new_elem: pointer to element to add 4687 */ 4688 static void mcast_list_add(struct irdma_pci_f *rf, 4689 struct mc_table_list *new_elem) 4690 { 4691 list_add(&new_elem->list, &rf->mc_qht_list.list); 4692 } 4693 4694 /** 4695 * mcast_list_del - Remove an mcast item from list 4696 * @mc_qht_elem: pointer to mcast table list element 4697 */ 4698 static void mcast_list_del(struct mc_table_list *mc_qht_elem) 4699 { 4700 if (mc_qht_elem) 4701 list_del(&mc_qht_elem->list); 4702 } 4703 4704 /** 4705 * mcast_list_lookup_ip - Search mcast list for address 4706 * @rf: RDMA PCI function 4707 * @ip_mcast: pointer to mcast IP address 4708 */ 4709 static struct mc_table_list *mcast_list_lookup_ip(struct irdma_pci_f *rf, 4710 u32 *ip_mcast) 4711 { 4712 struct mc_table_list *mc_qht_el; 4713 struct list_head *pos, *q; 4714 4715 list_for_each_safe (pos, q, &rf->mc_qht_list.list) { 4716 mc_qht_el = list_entry(pos, struct mc_table_list, list); 4717 if (!memcmp(mc_qht_el->mc_info.dest_ip, ip_mcast, 4718 sizeof(mc_qht_el->mc_info.dest_ip))) 4719 return mc_qht_el; 4720 } 4721 4722 return NULL; 4723 } 4724 4725 /** 4726 * irdma_mcast_cqp_op - perform a mcast cqp operation 4727 * @iwdev: irdma device 4728 * @mc_grp_ctx: mcast group info 4729 * @op: operation 4730 * 4731 * returns error status 4732 */ 4733 static int irdma_mcast_cqp_op(struct irdma_device *iwdev, 4734 struct irdma_mcast_grp_info *mc_grp_ctx, u8 op) 4735 { 4736 struct cqp_cmds_info *cqp_info; 4737 struct irdma_cqp_request *cqp_request; 4738 int status; 4739 4740 cqp_request = irdma_alloc_and_get_cqp_request(&iwdev->rf->cqp, true); 4741 if (!cqp_request) 4742 return -ENOMEM; 4743 4744 cqp_request->info.in.u.mc_create.info = *mc_grp_ctx; 4745 cqp_info = &cqp_request->info; 4746 cqp_info->cqp_cmd = op; 4747 cqp_info->post_sq = 1; 4748 cqp_info->in.u.mc_create.scratch = (uintptr_t)cqp_request; 4749 cqp_info->in.u.mc_create.cqp = &iwdev->rf->cqp.sc_cqp; 4750 status = irdma_handle_cqp_op(iwdev->rf, cqp_request); 4751 irdma_put_cqp_request(&iwdev->rf->cqp, cqp_request); 4752 4753 return status; 4754 } 4755 4756 /** 4757 * irdma_mcast_mac - Get the multicast MAC for an IP address 4758 * @ip_addr: IPv4 or IPv6 address 4759 * @mac: pointer to result MAC address 4760 * @ipv4: flag indicating IPv4 or IPv6 4761 * 4762 */ 4763 void irdma_mcast_mac(u32 *ip_addr, u8 *mac, bool ipv4) 4764 { 4765 u8 *ip = (u8 *)ip_addr; 4766 4767 if (ipv4) { 4768 unsigned char mac4[ETH_ALEN] = {0x01, 0x00, 0x5E, 0x00, 4769 0x00, 0x00}; 4770 4771 mac4[3] = ip[2] & 0x7F; 4772 mac4[4] = ip[1]; 4773 mac4[5] = ip[0]; 4774 ether_addr_copy(mac, mac4); 4775 } else { 4776 unsigned char mac6[ETH_ALEN] = {0x33, 0x33, 0x00, 0x00, 4777 0x00, 0x00}; 4778 4779 mac6[2] = ip[3]; 4780 mac6[3] = ip[2]; 4781 mac6[4] = ip[1]; 4782 mac6[5] = ip[0]; 4783 ether_addr_copy(mac, mac6); 4784 } 4785 } 4786 4787 /** 4788 * irdma_attach_mcast - attach a qp to a multicast group 4789 * @ibqp: ptr to qp 4790 * @ibgid: pointer to global ID 4791 * @lid: local ID 4792 * 4793 * returns error status 4794 */ 4795 static int irdma_attach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid) 4796 { 4797 struct irdma_qp *iwqp = to_iwqp(ibqp); 4798 struct irdma_device *iwdev = iwqp->iwdev; 4799 struct irdma_pci_f *rf = iwdev->rf; 4800 struct mc_table_list *mc_qht_elem; 4801 struct irdma_mcast_grp_ctx_entry_info mcg_info = {}; 4802 unsigned long flags; 4803 u32 ip_addr[4] = {}; 4804 u32 mgn; 4805 u32 no_mgs; 4806 int ret = 0; 4807 bool ipv4; 4808 u16 vlan_id; 4809 union irdma_sockaddr sgid_addr; 4810 unsigned char dmac[ETH_ALEN]; 4811 4812 rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid); 4813 4814 if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid)) { 4815 irdma_copy_ip_ntohl(ip_addr, 4816 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32); 4817 irdma_get_vlan_mac_ipv6(ip_addr, &vlan_id, NULL); 4818 ipv4 = false; 4819 ibdev_dbg(&iwdev->ibdev, 4820 "VERBS: qp_id=%d, IP6address=%pI6\n", ibqp->qp_num, 4821 ip_addr); 4822 irdma_mcast_mac(ip_addr, dmac, false); 4823 } else { 4824 ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr); 4825 ipv4 = true; 4826 vlan_id = irdma_get_vlan_ipv4(ip_addr); 4827 irdma_mcast_mac(ip_addr, dmac, true); 4828 ibdev_dbg(&iwdev->ibdev, 4829 "VERBS: qp_id=%d, IP4address=%pI4, MAC=%pM\n", 4830 ibqp->qp_num, ip_addr, dmac); 4831 } 4832 4833 spin_lock_irqsave(&rf->qh_list_lock, flags); 4834 mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr); 4835 if (!mc_qht_elem) { 4836 struct irdma_dma_mem *dma_mem_mc; 4837 4838 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4839 mc_qht_elem = kzalloc(sizeof(*mc_qht_elem), GFP_KERNEL); 4840 if (!mc_qht_elem) 4841 return -ENOMEM; 4842 4843 mc_qht_elem->mc_info.ipv4_valid = ipv4; 4844 memcpy(mc_qht_elem->mc_info.dest_ip, ip_addr, 4845 sizeof(mc_qht_elem->mc_info.dest_ip)); 4846 ret = irdma_alloc_rsrc(rf, rf->allocated_mcgs, rf->max_mcg, 4847 &mgn, &rf->next_mcg); 4848 if (ret) { 4849 kfree(mc_qht_elem); 4850 return -ENOMEM; 4851 } 4852 4853 mc_qht_elem->mc_info.mgn = mgn; 4854 dma_mem_mc = &mc_qht_elem->mc_grp_ctx.dma_mem_mc; 4855 dma_mem_mc->size = ALIGN(sizeof(u64) * IRDMA_MAX_MGS_PER_CTX, 4856 IRDMA_HW_PAGE_SIZE); 4857 dma_mem_mc->va = dma_alloc_coherent(rf->hw.device, 4858 dma_mem_mc->size, 4859 &dma_mem_mc->pa, 4860 GFP_KERNEL); 4861 if (!dma_mem_mc->va) { 4862 irdma_free_rsrc(rf, rf->allocated_mcgs, mgn); 4863 kfree(mc_qht_elem); 4864 return -ENOMEM; 4865 } 4866 4867 mc_qht_elem->mc_grp_ctx.mg_id = (u16)mgn; 4868 memcpy(mc_qht_elem->mc_grp_ctx.dest_ip_addr, ip_addr, 4869 sizeof(mc_qht_elem->mc_grp_ctx.dest_ip_addr)); 4870 mc_qht_elem->mc_grp_ctx.ipv4_valid = ipv4; 4871 mc_qht_elem->mc_grp_ctx.vlan_id = vlan_id; 4872 if (vlan_id < VLAN_N_VID) 4873 mc_qht_elem->mc_grp_ctx.vlan_valid = true; 4874 mc_qht_elem->mc_grp_ctx.hmc_fcn_id = iwdev->rf->sc_dev.hmc_fn_id; 4875 mc_qht_elem->mc_grp_ctx.qs_handle = 4876 iwqp->sc_qp.vsi->qos[iwqp->sc_qp.user_pri].qs_handle; 4877 ether_addr_copy(mc_qht_elem->mc_grp_ctx.dest_mac_addr, dmac); 4878 4879 spin_lock_irqsave(&rf->qh_list_lock, flags); 4880 mcast_list_add(rf, mc_qht_elem); 4881 } else { 4882 if (mc_qht_elem->mc_grp_ctx.no_of_mgs == 4883 IRDMA_MAX_MGS_PER_CTX) { 4884 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4885 return -ENOMEM; 4886 } 4887 } 4888 4889 mcg_info.qp_id = iwqp->ibqp.qp_num; 4890 no_mgs = mc_qht_elem->mc_grp_ctx.no_of_mgs; 4891 irdma_sc_add_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info); 4892 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4893 4894 /* Only if there is a change do we need to modify or create */ 4895 if (!no_mgs) { 4896 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx, 4897 IRDMA_OP_MC_CREATE); 4898 } else if (no_mgs != mc_qht_elem->mc_grp_ctx.no_of_mgs) { 4899 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx, 4900 IRDMA_OP_MC_MODIFY); 4901 } else { 4902 return 0; 4903 } 4904 4905 if (ret) 4906 goto error; 4907 4908 return 0; 4909 4910 error: 4911 irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info); 4912 if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) { 4913 mcast_list_del(mc_qht_elem); 4914 dma_free_coherent(rf->hw.device, 4915 mc_qht_elem->mc_grp_ctx.dma_mem_mc.size, 4916 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va, 4917 mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa); 4918 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL; 4919 irdma_free_rsrc(rf, rf->allocated_mcgs, 4920 mc_qht_elem->mc_grp_ctx.mg_id); 4921 kfree(mc_qht_elem); 4922 } 4923 4924 return ret; 4925 } 4926 4927 /** 4928 * irdma_detach_mcast - detach a qp from a multicast group 4929 * @ibqp: ptr to qp 4930 * @ibgid: pointer to global ID 4931 * @lid: local ID 4932 * 4933 * returns error status 4934 */ 4935 static int irdma_detach_mcast(struct ib_qp *ibqp, union ib_gid *ibgid, u16 lid) 4936 { 4937 struct irdma_qp *iwqp = to_iwqp(ibqp); 4938 struct irdma_device *iwdev = iwqp->iwdev; 4939 struct irdma_pci_f *rf = iwdev->rf; 4940 u32 ip_addr[4] = {}; 4941 struct mc_table_list *mc_qht_elem; 4942 struct irdma_mcast_grp_ctx_entry_info mcg_info = {}; 4943 int ret; 4944 unsigned long flags; 4945 union irdma_sockaddr sgid_addr; 4946 4947 rdma_gid2ip((struct sockaddr *)&sgid_addr, ibgid); 4948 if (!ipv6_addr_v4mapped((struct in6_addr *)ibgid)) 4949 irdma_copy_ip_ntohl(ip_addr, 4950 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32); 4951 else 4952 ip_addr[0] = ntohl(sgid_addr.saddr_in.sin_addr.s_addr); 4953 4954 spin_lock_irqsave(&rf->qh_list_lock, flags); 4955 mc_qht_elem = mcast_list_lookup_ip(rf, ip_addr); 4956 if (!mc_qht_elem) { 4957 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4958 ibdev_dbg(&iwdev->ibdev, 4959 "VERBS: address not found MCG\n"); 4960 return 0; 4961 } 4962 4963 mcg_info.qp_id = iwqp->ibqp.qp_num; 4964 irdma_sc_del_mcast_grp(&mc_qht_elem->mc_grp_ctx, &mcg_info); 4965 if (!mc_qht_elem->mc_grp_ctx.no_of_mgs) { 4966 mcast_list_del(mc_qht_elem); 4967 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4968 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx, 4969 IRDMA_OP_MC_DESTROY); 4970 if (ret) { 4971 ibdev_dbg(&iwdev->ibdev, 4972 "VERBS: failed MC_DESTROY MCG\n"); 4973 spin_lock_irqsave(&rf->qh_list_lock, flags); 4974 mcast_list_add(rf, mc_qht_elem); 4975 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4976 return -EAGAIN; 4977 } 4978 4979 dma_free_coherent(rf->hw.device, 4980 mc_qht_elem->mc_grp_ctx.dma_mem_mc.size, 4981 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va, 4982 mc_qht_elem->mc_grp_ctx.dma_mem_mc.pa); 4983 mc_qht_elem->mc_grp_ctx.dma_mem_mc.va = NULL; 4984 irdma_free_rsrc(rf, rf->allocated_mcgs, 4985 mc_qht_elem->mc_grp_ctx.mg_id); 4986 kfree(mc_qht_elem); 4987 } else { 4988 spin_unlock_irqrestore(&rf->qh_list_lock, flags); 4989 ret = irdma_mcast_cqp_op(iwdev, &mc_qht_elem->mc_grp_ctx, 4990 IRDMA_OP_MC_MODIFY); 4991 if (ret) { 4992 ibdev_dbg(&iwdev->ibdev, 4993 "VERBS: failed Modify MCG\n"); 4994 return ret; 4995 } 4996 } 4997 4998 return 0; 4999 } 5000 5001 static int irdma_create_hw_ah(struct irdma_device *iwdev, struct irdma_ah *ah, bool sleep) 5002 { 5003 struct irdma_pci_f *rf = iwdev->rf; 5004 int err; 5005 5006 err = irdma_alloc_rsrc(rf, rf->allocated_ahs, rf->max_ah, &ah->sc_ah.ah_info.ah_idx, 5007 &rf->next_ah); 5008 if (err) 5009 return err; 5010 5011 err = irdma_ah_cqp_op(rf, &ah->sc_ah, IRDMA_OP_AH_CREATE, sleep, 5012 irdma_gsi_ud_qp_ah_cb, &ah->sc_ah); 5013 5014 if (err) { 5015 ibdev_dbg(&iwdev->ibdev, "VERBS: CQP-OP Create AH fail"); 5016 goto err_ah_create; 5017 } 5018 5019 if (!sleep) { 5020 int cnt = CQP_COMPL_WAIT_TIME_MS * CQP_TIMEOUT_THRESHOLD; 5021 5022 do { 5023 irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq); 5024 mdelay(1); 5025 } while (!ah->sc_ah.ah_info.ah_valid && --cnt); 5026 5027 if (!cnt) { 5028 ibdev_dbg(&iwdev->ibdev, "VERBS: CQP create AH timed out"); 5029 err = -ETIMEDOUT; 5030 goto err_ah_create; 5031 } 5032 } 5033 return 0; 5034 5035 err_ah_create: 5036 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs, ah->sc_ah.ah_info.ah_idx); 5037 5038 return err; 5039 } 5040 5041 static int irdma_setup_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr) 5042 { 5043 struct irdma_pd *pd = to_iwpd(ibah->pd); 5044 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah); 5045 struct rdma_ah_attr *ah_attr = attr->ah_attr; 5046 const struct ib_gid_attr *sgid_attr; 5047 struct irdma_device *iwdev = to_iwdev(ibah->pd->device); 5048 struct irdma_pci_f *rf = iwdev->rf; 5049 struct irdma_sc_ah *sc_ah; 5050 struct irdma_ah_info *ah_info; 5051 union irdma_sockaddr sgid_addr, dgid_addr; 5052 int err; 5053 u8 dmac[ETH_ALEN]; 5054 5055 ah->pd = pd; 5056 sc_ah = &ah->sc_ah; 5057 sc_ah->ah_info.vsi = &iwdev->vsi; 5058 irdma_sc_init_ah(&rf->sc_dev, sc_ah); 5059 ah->sgid_index = ah_attr->grh.sgid_index; 5060 sgid_attr = ah_attr->grh.sgid_attr; 5061 memcpy(&ah->dgid, &ah_attr->grh.dgid, sizeof(ah->dgid)); 5062 rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid); 5063 rdma_gid2ip((struct sockaddr *)&dgid_addr, &ah_attr->grh.dgid); 5064 ah->av.attrs = *ah_attr; 5065 ah->av.net_type = rdma_gid_attr_network_type(sgid_attr); 5066 ah_info = &sc_ah->ah_info; 5067 ah_info->pd_idx = pd->sc_pd.pd_id; 5068 if (ah_attr->ah_flags & IB_AH_GRH) { 5069 ah_info->flow_label = ah_attr->grh.flow_label; 5070 ah_info->hop_ttl = ah_attr->grh.hop_limit; 5071 ah_info->tc_tos = ah_attr->grh.traffic_class; 5072 } 5073 5074 ether_addr_copy(dmac, ah_attr->roce.dmac); 5075 if (ah->av.net_type == RDMA_NETWORK_IPV4) { 5076 ah_info->ipv4_valid = true; 5077 ah_info->dest_ip_addr[0] = 5078 ntohl(dgid_addr.saddr_in.sin_addr.s_addr); 5079 ah_info->src_ip_addr[0] = 5080 ntohl(sgid_addr.saddr_in.sin_addr.s_addr); 5081 ah_info->do_lpbk = irdma_ipv4_is_lpb(ah_info->src_ip_addr[0], 5082 ah_info->dest_ip_addr[0]); 5083 if (ipv4_is_multicast(dgid_addr.saddr_in.sin_addr.s_addr)) { 5084 ah_info->do_lpbk = true; 5085 irdma_mcast_mac(ah_info->dest_ip_addr, dmac, true); 5086 } 5087 } else { 5088 irdma_copy_ip_ntohl(ah_info->dest_ip_addr, 5089 dgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32); 5090 irdma_copy_ip_ntohl(ah_info->src_ip_addr, 5091 sgid_addr.saddr_in6.sin6_addr.in6_u.u6_addr32); 5092 ah_info->do_lpbk = irdma_ipv6_is_lpb(ah_info->src_ip_addr, 5093 ah_info->dest_ip_addr); 5094 if (rdma_is_multicast_addr(&dgid_addr.saddr_in6.sin6_addr)) { 5095 ah_info->do_lpbk = true; 5096 irdma_mcast_mac(ah_info->dest_ip_addr, dmac, false); 5097 } 5098 } 5099 5100 err = rdma_read_gid_l2_fields(sgid_attr, &ah_info->vlan_tag, 5101 ah_info->mac_addr); 5102 if (err) 5103 return err; 5104 5105 ah_info->dst_arpindex = irdma_add_arp(iwdev->rf, ah_info->dest_ip_addr, 5106 ah_info->ipv4_valid, dmac); 5107 5108 if (ah_info->dst_arpindex == -1) 5109 return -EINVAL; 5110 5111 if (ah_info->vlan_tag >= VLAN_N_VID && iwdev->dcb_vlan_mode) 5112 ah_info->vlan_tag = 0; 5113 5114 if (ah_info->vlan_tag < VLAN_N_VID) { 5115 u8 prio = rt_tos2priority(ah_info->tc_tos); 5116 5117 prio = irdma_roce_get_vlan_prio(sgid_attr, prio); 5118 5119 ah_info->vlan_tag |= (u16)prio << VLAN_PRIO_SHIFT; 5120 ah_info->insert_vlan_tag = true; 5121 } 5122 5123 return 0; 5124 } 5125 5126 /** 5127 * irdma_ah_exists - Check for existing identical AH 5128 * @iwdev: irdma device 5129 * @new_ah: AH to check for 5130 * 5131 * returns true if AH is found, false if not found. 5132 */ 5133 static bool irdma_ah_exists(struct irdma_device *iwdev, 5134 struct irdma_ah *new_ah) 5135 { 5136 struct irdma_ah *ah; 5137 u32 key = new_ah->sc_ah.ah_info.dest_ip_addr[0] ^ 5138 new_ah->sc_ah.ah_info.dest_ip_addr[1] ^ 5139 new_ah->sc_ah.ah_info.dest_ip_addr[2] ^ 5140 new_ah->sc_ah.ah_info.dest_ip_addr[3]; 5141 5142 hash_for_each_possible(iwdev->rf->ah_hash_tbl, ah, list, key) { 5143 /* Set ah_valid and ah_id the same so memcmp can work */ 5144 new_ah->sc_ah.ah_info.ah_idx = ah->sc_ah.ah_info.ah_idx; 5145 new_ah->sc_ah.ah_info.ah_valid = ah->sc_ah.ah_info.ah_valid; 5146 if (!memcmp(&ah->sc_ah.ah_info, &new_ah->sc_ah.ah_info, 5147 sizeof(ah->sc_ah.ah_info))) { 5148 refcount_inc(&ah->refcnt); 5149 new_ah->parent_ah = ah; 5150 return true; 5151 } 5152 } 5153 5154 return false; 5155 } 5156 5157 /** 5158 * irdma_destroy_ah - Destroy address handle 5159 * @ibah: pointer to address handle 5160 * @ah_flags: flags for sleepable 5161 */ 5162 static int irdma_destroy_ah(struct ib_ah *ibah, u32 ah_flags) 5163 { 5164 struct irdma_device *iwdev = to_iwdev(ibah->device); 5165 struct irdma_ah *ah = to_iwah(ibah); 5166 5167 if ((ah_flags & RDMA_DESTROY_AH_SLEEPABLE) && ah->parent_ah) { 5168 mutex_lock(&iwdev->rf->ah_tbl_lock); 5169 if (!refcount_dec_and_test(&ah->parent_ah->refcnt)) { 5170 mutex_unlock(&iwdev->rf->ah_tbl_lock); 5171 return 0; 5172 } 5173 hash_del(&ah->parent_ah->list); 5174 kfree(ah->parent_ah); 5175 mutex_unlock(&iwdev->rf->ah_tbl_lock); 5176 } 5177 5178 irdma_ah_cqp_op(iwdev->rf, &ah->sc_ah, IRDMA_OP_AH_DESTROY, 5179 false, NULL, ah); 5180 5181 irdma_free_rsrc(iwdev->rf, iwdev->rf->allocated_ahs, 5182 ah->sc_ah.ah_info.ah_idx); 5183 5184 return 0; 5185 } 5186 5187 /** 5188 * irdma_create_user_ah - create user address handle 5189 * @ibah: address handle 5190 * @attr: address handle attributes 5191 * @udata: User data 5192 * 5193 * returns 0 on success, error otherwise 5194 */ 5195 static int irdma_create_user_ah(struct ib_ah *ibah, 5196 struct rdma_ah_init_attr *attr, 5197 struct ib_udata *udata) 5198 { 5199 #define IRDMA_CREATE_AH_MIN_RESP_LEN offsetofend(struct irdma_create_ah_resp, rsvd) 5200 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah); 5201 struct irdma_device *iwdev = to_iwdev(ibah->pd->device); 5202 struct irdma_create_ah_resp uresp; 5203 struct irdma_ah *parent_ah; 5204 int err; 5205 5206 if (udata && udata->outlen < IRDMA_CREATE_AH_MIN_RESP_LEN) 5207 return -EINVAL; 5208 5209 err = irdma_setup_ah(ibah, attr); 5210 if (err) 5211 return err; 5212 mutex_lock(&iwdev->rf->ah_tbl_lock); 5213 if (!irdma_ah_exists(iwdev, ah)) { 5214 err = irdma_create_hw_ah(iwdev, ah, true); 5215 if (err) { 5216 mutex_unlock(&iwdev->rf->ah_tbl_lock); 5217 return err; 5218 } 5219 /* Add new AH to list */ 5220 parent_ah = kmemdup(ah, sizeof(*ah), GFP_KERNEL); 5221 if (parent_ah) { 5222 u32 key = parent_ah->sc_ah.ah_info.dest_ip_addr[0] ^ 5223 parent_ah->sc_ah.ah_info.dest_ip_addr[1] ^ 5224 parent_ah->sc_ah.ah_info.dest_ip_addr[2] ^ 5225 parent_ah->sc_ah.ah_info.dest_ip_addr[3]; 5226 5227 ah->parent_ah = parent_ah; 5228 hash_add(iwdev->rf->ah_hash_tbl, &parent_ah->list, key); 5229 refcount_set(&parent_ah->refcnt, 1); 5230 } 5231 } 5232 mutex_unlock(&iwdev->rf->ah_tbl_lock); 5233 5234 uresp.ah_id = ah->sc_ah.ah_info.ah_idx; 5235 err = ib_copy_to_udata(udata, &uresp, min(sizeof(uresp), udata->outlen)); 5236 if (err) 5237 irdma_destroy_ah(ibah, attr->flags); 5238 5239 return err; 5240 } 5241 5242 /** 5243 * irdma_create_ah - create address handle 5244 * @ibah: address handle 5245 * @attr: address handle attributes 5246 * @udata: NULL 5247 * 5248 * returns 0 on success, error otherwise 5249 */ 5250 static int irdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *attr, 5251 struct ib_udata *udata) 5252 { 5253 struct irdma_ah *ah = container_of(ibah, struct irdma_ah, ibah); 5254 struct irdma_device *iwdev = to_iwdev(ibah->pd->device); 5255 int err; 5256 5257 err = irdma_setup_ah(ibah, attr); 5258 if (err) 5259 return err; 5260 err = irdma_create_hw_ah(iwdev, ah, attr->flags & RDMA_CREATE_AH_SLEEPABLE); 5261 5262 return err; 5263 } 5264 5265 /** 5266 * irdma_query_ah - Query address handle 5267 * @ibah: pointer to address handle 5268 * @ah_attr: address handle attributes 5269 */ 5270 static int irdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr) 5271 { 5272 struct irdma_ah *ah = to_iwah(ibah); 5273 5274 memset(ah_attr, 0, sizeof(*ah_attr)); 5275 if (ah->av.attrs.ah_flags & IB_AH_GRH) { 5276 ah_attr->ah_flags = IB_AH_GRH; 5277 ah_attr->grh.flow_label = ah->sc_ah.ah_info.flow_label; 5278 ah_attr->grh.traffic_class = ah->sc_ah.ah_info.tc_tos; 5279 ah_attr->grh.hop_limit = ah->sc_ah.ah_info.hop_ttl; 5280 ah_attr->grh.sgid_index = ah->sgid_index; 5281 memcpy(&ah_attr->grh.dgid, &ah->dgid, 5282 sizeof(ah_attr->grh.dgid)); 5283 } 5284 5285 return 0; 5286 } 5287 5288 static enum rdma_link_layer irdma_get_link_layer(struct ib_device *ibdev, 5289 u32 port_num) 5290 { 5291 return IB_LINK_LAYER_ETHERNET; 5292 } 5293 5294 static const struct ib_device_ops irdma_gen1_dev_ops = { 5295 .dealloc_driver = irdma_ib_dealloc_device, 5296 }; 5297 5298 static const struct ib_device_ops irdma_gen3_dev_ops = { 5299 .alloc_mw = irdma_alloc_mw, 5300 .create_srq = irdma_create_srq, 5301 .dealloc_mw = irdma_dealloc_mw, 5302 .destroy_srq = irdma_destroy_srq, 5303 .modify_srq = irdma_modify_srq, 5304 .post_srq_recv = irdma_post_srq_recv, 5305 .query_srq = irdma_query_srq, 5306 }; 5307 5308 static const struct ib_device_ops irdma_roce_dev_ops = { 5309 .attach_mcast = irdma_attach_mcast, 5310 .create_ah = irdma_create_ah, 5311 .create_user_ah = irdma_create_user_ah, 5312 .destroy_ah = irdma_destroy_ah, 5313 .detach_mcast = irdma_detach_mcast, 5314 .get_link_layer = irdma_get_link_layer, 5315 .get_port_immutable = irdma_roce_port_immutable, 5316 .modify_qp = irdma_modify_qp_roce, 5317 .query_ah = irdma_query_ah, 5318 .query_pkey = irdma_query_pkey, 5319 }; 5320 5321 static const struct ib_device_ops irdma_iw_dev_ops = { 5322 .get_port_immutable = irdma_iw_port_immutable, 5323 .iw_accept = irdma_accept, 5324 .iw_add_ref = irdma_qp_add_ref, 5325 .iw_connect = irdma_connect, 5326 .iw_create_listen = irdma_create_listen, 5327 .iw_destroy_listen = irdma_destroy_listen, 5328 .iw_get_qp = irdma_get_qp, 5329 .iw_reject = irdma_reject, 5330 .iw_rem_ref = irdma_qp_rem_ref, 5331 .modify_qp = irdma_modify_qp, 5332 .query_gid = irdma_query_gid, 5333 }; 5334 5335 static const struct ib_device_ops irdma_dev_ops = { 5336 .owner = THIS_MODULE, 5337 .driver_id = RDMA_DRIVER_IRDMA, 5338 .uverbs_abi_ver = IRDMA_ABI_VER, 5339 5340 .alloc_hw_port_stats = irdma_alloc_hw_port_stats, 5341 .alloc_mr = irdma_alloc_mr, 5342 .alloc_pd = irdma_alloc_pd, 5343 .alloc_ucontext = irdma_alloc_ucontext, 5344 .create_cq = irdma_create_cq, 5345 .create_qp = irdma_create_qp, 5346 .dealloc_driver = irdma_ib_dealloc_device, 5347 .dealloc_mw = irdma_dealloc_mw, 5348 .dealloc_pd = irdma_dealloc_pd, 5349 .dealloc_ucontext = irdma_dealloc_ucontext, 5350 .dereg_mr = irdma_dereg_mr, 5351 .destroy_cq = irdma_destroy_cq, 5352 .destroy_qp = irdma_destroy_qp, 5353 .disassociate_ucontext = irdma_disassociate_ucontext, 5354 .get_dev_fw_str = irdma_get_dev_fw_str, 5355 .get_dma_mr = irdma_get_dma_mr, 5356 .get_hw_stats = irdma_get_hw_stats, 5357 .map_mr_sg = irdma_map_mr_sg, 5358 .mmap = irdma_mmap, 5359 .mmap_free = irdma_mmap_free, 5360 .poll_cq = irdma_poll_cq, 5361 .post_recv = irdma_post_recv, 5362 .post_send = irdma_post_send, 5363 .query_device = irdma_query_device, 5364 .query_port = irdma_query_port, 5365 .query_qp = irdma_query_qp, 5366 .reg_user_mr = irdma_reg_user_mr, 5367 .reg_user_mr_dmabuf = irdma_reg_user_mr_dmabuf, 5368 .rereg_user_mr = irdma_rereg_user_mr, 5369 .req_notify_cq = irdma_req_notify_cq, 5370 .resize_cq = irdma_resize_cq, 5371 INIT_RDMA_OBJ_SIZE(ib_pd, irdma_pd, ibpd), 5372 INIT_RDMA_OBJ_SIZE(ib_ucontext, irdma_ucontext, ibucontext), 5373 INIT_RDMA_OBJ_SIZE(ib_ah, irdma_ah, ibah), 5374 INIT_RDMA_OBJ_SIZE(ib_cq, irdma_cq, ibcq), 5375 INIT_RDMA_OBJ_SIZE(ib_mw, irdma_mr, ibmw), 5376 INIT_RDMA_OBJ_SIZE(ib_qp, irdma_qp, ibqp), 5377 INIT_RDMA_OBJ_SIZE(ib_srq, irdma_srq, ibsrq), 5378 }; 5379 5380 /** 5381 * irdma_init_roce_device - initialization of roce rdma device 5382 * @iwdev: irdma device 5383 */ 5384 static void irdma_init_roce_device(struct irdma_device *iwdev) 5385 { 5386 iwdev->ibdev.node_type = RDMA_NODE_IB_CA; 5387 addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid, 5388 iwdev->netdev->dev_addr); 5389 ib_set_device_ops(&iwdev->ibdev, &irdma_roce_dev_ops); 5390 } 5391 5392 /** 5393 * irdma_init_iw_device - initialization of iwarp rdma device 5394 * @iwdev: irdma device 5395 */ 5396 static void irdma_init_iw_device(struct irdma_device *iwdev) 5397 { 5398 struct net_device *netdev = iwdev->netdev; 5399 5400 iwdev->ibdev.node_type = RDMA_NODE_RNIC; 5401 addrconf_addr_eui48((u8 *)&iwdev->ibdev.node_guid, 5402 netdev->dev_addr); 5403 memcpy(iwdev->ibdev.iw_ifname, netdev->name, 5404 sizeof(iwdev->ibdev.iw_ifname)); 5405 ib_set_device_ops(&iwdev->ibdev, &irdma_iw_dev_ops); 5406 } 5407 5408 /** 5409 * irdma_init_rdma_device - initialization of rdma device 5410 * @iwdev: irdma device 5411 */ 5412 static void irdma_init_rdma_device(struct irdma_device *iwdev) 5413 { 5414 struct pci_dev *pcidev = iwdev->rf->pcidev; 5415 5416 if (iwdev->roce_mode) 5417 irdma_init_roce_device(iwdev); 5418 else 5419 irdma_init_iw_device(iwdev); 5420 5421 iwdev->ibdev.phys_port_cnt = 1; 5422 iwdev->ibdev.num_comp_vectors = iwdev->rf->ceqs_count; 5423 iwdev->ibdev.dev.parent = &pcidev->dev; 5424 ib_set_device_ops(&iwdev->ibdev, &irdma_dev_ops); 5425 if (iwdev->rf->rdma_ver == IRDMA_GEN_1) 5426 ib_set_device_ops(&iwdev->ibdev, &irdma_gen1_dev_ops); 5427 if (iwdev->rf->rdma_ver >= IRDMA_GEN_3) 5428 ib_set_device_ops(&iwdev->ibdev, &irdma_gen3_dev_ops); 5429 } 5430 5431 /** 5432 * irdma_port_ibevent - indicate port event 5433 * @iwdev: irdma device 5434 */ 5435 void irdma_port_ibevent(struct irdma_device *iwdev) 5436 { 5437 struct ib_event event; 5438 5439 event.device = &iwdev->ibdev; 5440 event.element.port_num = 1; 5441 event.event = 5442 iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 5443 ib_dispatch_event(&event); 5444 } 5445 5446 /** 5447 * irdma_ib_unregister_device - unregister rdma device from IB 5448 * core 5449 * @iwdev: irdma device 5450 */ 5451 void irdma_ib_unregister_device(struct irdma_device *iwdev) 5452 { 5453 iwdev->iw_status = 0; 5454 irdma_port_ibevent(iwdev); 5455 ib_unregister_device(&iwdev->ibdev); 5456 } 5457 5458 /** 5459 * irdma_ib_register_device - register irdma device to IB core 5460 * @iwdev: irdma device 5461 */ 5462 int irdma_ib_register_device(struct irdma_device *iwdev) 5463 { 5464 int ret; 5465 5466 irdma_init_rdma_device(iwdev); 5467 5468 ret = ib_device_set_netdev(&iwdev->ibdev, iwdev->netdev, 1); 5469 if (ret) 5470 goto error; 5471 dma_set_max_seg_size(iwdev->rf->hw.device, UINT_MAX); 5472 ret = ib_register_device(&iwdev->ibdev, "irdma%d", iwdev->rf->hw.device); 5473 if (ret) 5474 goto error; 5475 5476 iwdev->iw_status = 1; 5477 irdma_port_ibevent(iwdev); 5478 5479 return 0; 5480 5481 error: 5482 if (ret) 5483 ibdev_dbg(&iwdev->ibdev, "VERBS: Register RDMA device fail\n"); 5484 5485 return ret; 5486 } 5487 5488 /** 5489 * irdma_ib_dealloc_device 5490 * @ibdev: ib device 5491 * 5492 * callback from ibdev dealloc_driver to deallocate resources 5493 * unber irdma device 5494 */ 5495 void irdma_ib_dealloc_device(struct ib_device *ibdev) 5496 { 5497 struct irdma_device *iwdev = to_iwdev(ibdev); 5498 5499 irdma_rt_deinit_hw(iwdev); 5500 if (!iwdev->is_vport) { 5501 irdma_ctrl_deinit_hw(iwdev->rf); 5502 if (iwdev->rf->vchnl_wq) 5503 destroy_workqueue(iwdev->rf->vchnl_wq); 5504 } 5505 } 5506