1 /* 2 * Copyright(c) 2016 - 2018 Intel Corporation. 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * BSD LICENSE 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 24 * - Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * - Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in 28 * the documentation and/or other materials provided with the 29 * distribution. 30 * - Neither the name of Intel Corporation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45 * 46 */ 47 48 #include <linux/module.h> 49 #include <linux/kernel.h> 50 #include <linux/dma-mapping.h> 51 #include "vt.h" 52 #include "cq.h" 53 #include "trace.h" 54 55 #define RVT_UVERBS_ABI_VERSION 2 56 57 MODULE_LICENSE("Dual BSD/GPL"); 58 MODULE_DESCRIPTION("RDMA Verbs Transport Library"); 59 60 static int rvt_init(void) 61 { 62 int ret = rvt_driver_cq_init(); 63 64 if (ret) 65 pr_err("Error in driver CQ init.\n"); 66 67 return ret; 68 } 69 module_init(rvt_init); 70 71 static void rvt_cleanup(void) 72 { 73 rvt_cq_exit(); 74 } 75 module_exit(rvt_cleanup); 76 77 /** 78 * rvt_alloc_device - allocate rdi 79 * @size: how big of a structure to allocate 80 * @nports: number of ports to allocate array slots for 81 * 82 * Use IB core device alloc to allocate space for the rdi which is assumed to be 83 * inside of the ib_device. Any extra space that drivers require should be 84 * included in size. 85 * 86 * We also allocate a port array based on the number of ports. 87 * 88 * Return: pointer to allocated rdi 89 */ 90 struct rvt_dev_info *rvt_alloc_device(size_t size, int nports) 91 { 92 struct rvt_dev_info *rdi; 93 94 rdi = container_of(_ib_alloc_device(size), struct rvt_dev_info, ibdev); 95 if (!rdi) 96 return rdi; 97 98 rdi->ports = kcalloc(nports, 99 sizeof(struct rvt_ibport **), 100 GFP_KERNEL); 101 if (!rdi->ports) 102 ib_dealloc_device(&rdi->ibdev); 103 104 return rdi; 105 } 106 EXPORT_SYMBOL(rvt_alloc_device); 107 108 /** 109 * rvt_dealloc_device - deallocate rdi 110 * @rdi: structure to free 111 * 112 * Free a structure allocated with rvt_alloc_device() 113 */ 114 void rvt_dealloc_device(struct rvt_dev_info *rdi) 115 { 116 kfree(rdi->ports); 117 ib_dealloc_device(&rdi->ibdev); 118 } 119 EXPORT_SYMBOL(rvt_dealloc_device); 120 121 static int rvt_query_device(struct ib_device *ibdev, 122 struct ib_device_attr *props, 123 struct ib_udata *uhw) 124 { 125 struct rvt_dev_info *rdi = ib_to_rvt(ibdev); 126 127 if (uhw->inlen || uhw->outlen) 128 return -EINVAL; 129 /* 130 * Return rvt_dev_info.dparms.props contents 131 */ 132 *props = rdi->dparms.props; 133 return 0; 134 } 135 136 static int rvt_modify_device(struct ib_device *device, 137 int device_modify_mask, 138 struct ib_device_modify *device_modify) 139 { 140 /* 141 * There is currently no need to supply this based on qib and hfi1. 142 * Future drivers may need to implement this though. 143 */ 144 145 return -EOPNOTSUPP; 146 } 147 148 /** 149 * rvt_query_port: Passes the query port call to the driver 150 * @ibdev: Verbs IB dev 151 * @port_num: port number, 1 based from ib core 152 * @props: structure to hold returned properties 153 * 154 * Return: 0 on success 155 */ 156 static int rvt_query_port(struct ib_device *ibdev, u8 port_num, 157 struct ib_port_attr *props) 158 { 159 struct rvt_dev_info *rdi = ib_to_rvt(ibdev); 160 struct rvt_ibport *rvp; 161 int port_index = ibport_num_to_idx(ibdev, port_num); 162 163 if (port_index < 0) 164 return -EINVAL; 165 166 rvp = rdi->ports[port_index]; 167 /* props being zeroed by the caller, avoid zeroing it here */ 168 props->sm_lid = rvp->sm_lid; 169 props->sm_sl = rvp->sm_sl; 170 props->port_cap_flags = rvp->port_cap_flags; 171 props->max_msg_sz = 0x80000000; 172 props->pkey_tbl_len = rvt_get_npkeys(rdi); 173 props->bad_pkey_cntr = rvp->pkey_violations; 174 props->qkey_viol_cntr = rvp->qkey_violations; 175 props->subnet_timeout = rvp->subnet_timeout; 176 props->init_type_reply = 0; 177 178 /* Populate the remaining ib_port_attr elements */ 179 return rdi->driver_f.query_port_state(rdi, port_num, props); 180 } 181 182 /** 183 * rvt_modify_port 184 * @ibdev: Verbs IB dev 185 * @port_num: Port number, 1 based from ib core 186 * @port_modify_mask: How to change the port 187 * @props: Structure to fill in 188 * 189 * Return: 0 on success 190 */ 191 static int rvt_modify_port(struct ib_device *ibdev, u8 port_num, 192 int port_modify_mask, struct ib_port_modify *props) 193 { 194 struct rvt_dev_info *rdi = ib_to_rvt(ibdev); 195 struct rvt_ibport *rvp; 196 int ret = 0; 197 int port_index = ibport_num_to_idx(ibdev, port_num); 198 199 if (port_index < 0) 200 return -EINVAL; 201 202 rvp = rdi->ports[port_index]; 203 if (port_modify_mask & IB_PORT_OPA_MASK_CHG) { 204 rvp->port_cap3_flags |= props->set_port_cap_mask; 205 rvp->port_cap3_flags &= ~props->clr_port_cap_mask; 206 } else { 207 rvp->port_cap_flags |= props->set_port_cap_mask; 208 rvp->port_cap_flags &= ~props->clr_port_cap_mask; 209 } 210 211 if (props->set_port_cap_mask || props->clr_port_cap_mask) 212 rdi->driver_f.cap_mask_chg(rdi, port_num); 213 if (port_modify_mask & IB_PORT_SHUTDOWN) 214 ret = rdi->driver_f.shut_down_port(rdi, port_num); 215 if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) 216 rvp->qkey_violations = 0; 217 218 return ret; 219 } 220 221 /** 222 * rvt_query_pkey - Return a pkey from the table at a given index 223 * @ibdev: Verbs IB dev 224 * @port_num: Port number, 1 based from ib core 225 * @index: Index into pkey table 226 * @pkey: returned pkey from the port pkey table 227 * 228 * Return: 0 on failure pkey otherwise 229 */ 230 static int rvt_query_pkey(struct ib_device *ibdev, u8 port_num, u16 index, 231 u16 *pkey) 232 { 233 /* 234 * Driver will be responsible for keeping rvt_dev_info.pkey_table up to 235 * date. This function will just return that value. There is no need to 236 * lock, if a stale value is read and sent to the user so be it there is 237 * no way to protect against that anyway. 238 */ 239 struct rvt_dev_info *rdi = ib_to_rvt(ibdev); 240 int port_index; 241 242 port_index = ibport_num_to_idx(ibdev, port_num); 243 if (port_index < 0) 244 return -EINVAL; 245 246 if (index >= rvt_get_npkeys(rdi)) 247 return -EINVAL; 248 249 *pkey = rvt_get_pkey(rdi, port_index, index); 250 return 0; 251 } 252 253 /** 254 * rvt_query_gid - Return a gid from the table 255 * @ibdev: Verbs IB dev 256 * @port_num: Port number, 1 based from ib core 257 * @guid_index: Index in table 258 * @gid: Gid to return 259 * 260 * Return: 0 on success 261 */ 262 static int rvt_query_gid(struct ib_device *ibdev, u8 port_num, 263 int guid_index, union ib_gid *gid) 264 { 265 struct rvt_dev_info *rdi; 266 struct rvt_ibport *rvp; 267 int port_index; 268 269 /* 270 * Driver is responsible for updating the guid table. Which will be used 271 * to craft the return value. This will work similar to how query_pkey() 272 * is being done. 273 */ 274 port_index = ibport_num_to_idx(ibdev, port_num); 275 if (port_index < 0) 276 return -EINVAL; 277 278 rdi = ib_to_rvt(ibdev); 279 rvp = rdi->ports[port_index]; 280 281 gid->global.subnet_prefix = rvp->gid_prefix; 282 283 return rdi->driver_f.get_guid_be(rdi, rvp, guid_index, 284 &gid->global.interface_id); 285 } 286 287 static inline struct rvt_ucontext *to_iucontext(struct ib_ucontext 288 *ibucontext) 289 { 290 return container_of(ibucontext, struct rvt_ucontext, ibucontext); 291 } 292 293 /** 294 * rvt_alloc_ucontext - Allocate a user context 295 * @uctx: Verbs context 296 * @udata: User data allocated 297 */ 298 static int rvt_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) 299 { 300 return 0; 301 } 302 303 /** 304 * rvt_dealloc_ucontext - Free a user context 305 * @context - Free this 306 */ 307 static void rvt_dealloc_ucontext(struct ib_ucontext *context) 308 { 309 return; 310 } 311 312 static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num, 313 struct ib_port_immutable *immutable) 314 { 315 struct rvt_dev_info *rdi = ib_to_rvt(ibdev); 316 struct ib_port_attr attr; 317 int err, port_index; 318 319 port_index = ibport_num_to_idx(ibdev, port_num); 320 if (port_index < 0) 321 return -EINVAL; 322 323 immutable->core_cap_flags = rdi->dparms.core_cap_flags; 324 325 err = ib_query_port(ibdev, port_num, &attr); 326 if (err) 327 return err; 328 329 immutable->pkey_tbl_len = attr.pkey_tbl_len; 330 immutable->gid_tbl_len = attr.gid_tbl_len; 331 immutable->max_mad_size = rdi->dparms.max_mad_size; 332 333 return 0; 334 } 335 336 enum { 337 MISC, 338 QUERY_DEVICE, 339 MODIFY_DEVICE, 340 QUERY_PORT, 341 MODIFY_PORT, 342 QUERY_PKEY, 343 QUERY_GID, 344 ALLOC_UCONTEXT, 345 DEALLOC_UCONTEXT, 346 GET_PORT_IMMUTABLE, 347 CREATE_QP, 348 MODIFY_QP, 349 DESTROY_QP, 350 QUERY_QP, 351 POST_SEND, 352 POST_RECV, 353 POST_SRQ_RECV, 354 CREATE_AH, 355 DESTROY_AH, 356 MODIFY_AH, 357 QUERY_AH, 358 CREATE_SRQ, 359 MODIFY_SRQ, 360 DESTROY_SRQ, 361 QUERY_SRQ, 362 ATTACH_MCAST, 363 DETACH_MCAST, 364 GET_DMA_MR, 365 REG_USER_MR, 366 DEREG_MR, 367 ALLOC_MR, 368 MAP_MR_SG, 369 ALLOC_FMR, 370 MAP_PHYS_FMR, 371 UNMAP_FMR, 372 DEALLOC_FMR, 373 MMAP, 374 CREATE_CQ, 375 DESTROY_CQ, 376 POLL_CQ, 377 REQ_NOTFIY_CQ, 378 RESIZE_CQ, 379 ALLOC_PD, 380 DEALLOC_PD, 381 _VERB_IDX_MAX /* Must always be last! */ 382 }; 383 384 static const struct ib_device_ops rvt_dev_ops = { 385 .uverbs_abi_ver = RVT_UVERBS_ABI_VERSION, 386 387 .alloc_fmr = rvt_alloc_fmr, 388 .alloc_mr = rvt_alloc_mr, 389 .alloc_pd = rvt_alloc_pd, 390 .alloc_ucontext = rvt_alloc_ucontext, 391 .attach_mcast = rvt_attach_mcast, 392 .create_ah = rvt_create_ah, 393 .create_cq = rvt_create_cq, 394 .create_qp = rvt_create_qp, 395 .create_srq = rvt_create_srq, 396 .dealloc_fmr = rvt_dealloc_fmr, 397 .dealloc_pd = rvt_dealloc_pd, 398 .dealloc_ucontext = rvt_dealloc_ucontext, 399 .dereg_mr = rvt_dereg_mr, 400 .destroy_ah = rvt_destroy_ah, 401 .destroy_cq = rvt_destroy_cq, 402 .destroy_qp = rvt_destroy_qp, 403 .destroy_srq = rvt_destroy_srq, 404 .detach_mcast = rvt_detach_mcast, 405 .get_dma_mr = rvt_get_dma_mr, 406 .get_port_immutable = rvt_get_port_immutable, 407 .map_mr_sg = rvt_map_mr_sg, 408 .map_phys_fmr = rvt_map_phys_fmr, 409 .mmap = rvt_mmap, 410 .modify_ah = rvt_modify_ah, 411 .modify_device = rvt_modify_device, 412 .modify_port = rvt_modify_port, 413 .modify_qp = rvt_modify_qp, 414 .modify_srq = rvt_modify_srq, 415 .poll_cq = rvt_poll_cq, 416 .post_recv = rvt_post_recv, 417 .post_send = rvt_post_send, 418 .post_srq_recv = rvt_post_srq_recv, 419 .query_ah = rvt_query_ah, 420 .query_device = rvt_query_device, 421 .query_gid = rvt_query_gid, 422 .query_pkey = rvt_query_pkey, 423 .query_port = rvt_query_port, 424 .query_qp = rvt_query_qp, 425 .query_srq = rvt_query_srq, 426 .reg_user_mr = rvt_reg_user_mr, 427 .req_notify_cq = rvt_req_notify_cq, 428 .resize_cq = rvt_resize_cq, 429 .unmap_fmr = rvt_unmap_fmr, 430 431 INIT_RDMA_OBJ_SIZE(ib_ah, rvt_ah, ibah), 432 INIT_RDMA_OBJ_SIZE(ib_cq, rvt_cq, ibcq), 433 INIT_RDMA_OBJ_SIZE(ib_pd, rvt_pd, ibpd), 434 INIT_RDMA_OBJ_SIZE(ib_srq, rvt_srq, ibsrq), 435 INIT_RDMA_OBJ_SIZE(ib_ucontext, rvt_ucontext, ibucontext), 436 }; 437 438 static noinline int check_support(struct rvt_dev_info *rdi, int verb) 439 { 440 switch (verb) { 441 case MISC: 442 /* 443 * These functions are not part of verbs specifically but are 444 * required for rdmavt to function. 445 */ 446 if ((!rdi->ibdev.ops.init_port) || 447 (!rdi->driver_f.get_pci_dev)) 448 return -EINVAL; 449 break; 450 451 case MODIFY_DEVICE: 452 /* 453 * rdmavt does not support modify device currently drivers must 454 * provide. 455 */ 456 if (!rdi->ibdev.ops.modify_device) 457 return -EOPNOTSUPP; 458 break; 459 460 case QUERY_PORT: 461 if (!rdi->ibdev.ops.query_port) 462 if (!rdi->driver_f.query_port_state) 463 return -EINVAL; 464 break; 465 466 case MODIFY_PORT: 467 if (!rdi->ibdev.ops.modify_port) 468 if (!rdi->driver_f.cap_mask_chg || 469 !rdi->driver_f.shut_down_port) 470 return -EINVAL; 471 break; 472 473 case QUERY_GID: 474 if (!rdi->ibdev.ops.query_gid) 475 if (!rdi->driver_f.get_guid_be) 476 return -EINVAL; 477 break; 478 479 case CREATE_QP: 480 if (!rdi->ibdev.ops.create_qp) 481 if (!rdi->driver_f.qp_priv_alloc || 482 !rdi->driver_f.qp_priv_free || 483 !rdi->driver_f.notify_qp_reset || 484 !rdi->driver_f.flush_qp_waiters || 485 !rdi->driver_f.stop_send_queue || 486 !rdi->driver_f.quiesce_qp) 487 return -EINVAL; 488 break; 489 490 case MODIFY_QP: 491 if (!rdi->ibdev.ops.modify_qp) 492 if (!rdi->driver_f.notify_qp_reset || 493 !rdi->driver_f.schedule_send || 494 !rdi->driver_f.get_pmtu_from_attr || 495 !rdi->driver_f.flush_qp_waiters || 496 !rdi->driver_f.stop_send_queue || 497 !rdi->driver_f.quiesce_qp || 498 !rdi->driver_f.notify_error_qp || 499 !rdi->driver_f.mtu_from_qp || 500 !rdi->driver_f.mtu_to_path_mtu) 501 return -EINVAL; 502 break; 503 504 case DESTROY_QP: 505 if (!rdi->ibdev.ops.destroy_qp) 506 if (!rdi->driver_f.qp_priv_free || 507 !rdi->driver_f.notify_qp_reset || 508 !rdi->driver_f.flush_qp_waiters || 509 !rdi->driver_f.stop_send_queue || 510 !rdi->driver_f.quiesce_qp) 511 return -EINVAL; 512 break; 513 514 case POST_SEND: 515 if (!rdi->ibdev.ops.post_send) 516 if (!rdi->driver_f.schedule_send || 517 !rdi->driver_f.do_send || 518 !rdi->post_parms) 519 return -EINVAL; 520 break; 521 522 } 523 524 return 0; 525 } 526 527 /** 528 * rvt_register_device - register a driver 529 * @rdi: main dev structure for all of rdmavt operations 530 * 531 * It is up to drivers to allocate the rdi and fill in the appropriate 532 * information. 533 * 534 * Return: 0 on success otherwise an errno. 535 */ 536 int rvt_register_device(struct rvt_dev_info *rdi) 537 { 538 int ret = 0, i; 539 540 if (!rdi) 541 return -EINVAL; 542 543 /* 544 * Check to ensure drivers have setup the required helpers for the verbs 545 * they want rdmavt to handle 546 */ 547 for (i = 0; i < _VERB_IDX_MAX; i++) 548 if (check_support(rdi, i)) { 549 pr_err("Driver support req not met at %d\n", i); 550 return -EINVAL; 551 } 552 553 ib_set_device_ops(&rdi->ibdev, &rvt_dev_ops); 554 555 /* Once we get past here we can use rvt_pr macros and tracepoints */ 556 trace_rvt_dbg(rdi, "Driver attempting registration"); 557 rvt_mmap_init(rdi); 558 559 /* Queue Pairs */ 560 ret = rvt_driver_qp_init(rdi); 561 if (ret) { 562 pr_err("Error in driver QP init.\n"); 563 return -EINVAL; 564 } 565 566 /* Address Handle */ 567 spin_lock_init(&rdi->n_ahs_lock); 568 rdi->n_ahs_allocated = 0; 569 570 /* Shared Receive Queue */ 571 rvt_driver_srq_init(rdi); 572 573 /* Multicast */ 574 rvt_driver_mcast_init(rdi); 575 576 /* Mem Region */ 577 ret = rvt_driver_mr_init(rdi); 578 if (ret) { 579 pr_err("Error in driver MR init.\n"); 580 goto bail_no_mr; 581 } 582 583 /* Memory Working Set Size */ 584 ret = rvt_wss_init(rdi); 585 if (ret) { 586 rvt_pr_err(rdi, "Error in WSS init.\n"); 587 goto bail_mr; 588 } 589 590 /* Completion queues */ 591 spin_lock_init(&rdi->n_cqs_lock); 592 593 /* DMA Operations */ 594 rdi->ibdev.dev.dma_ops = rdi->ibdev.dev.dma_ops ? : &dma_virt_ops; 595 596 /* Protection Domain */ 597 spin_lock_init(&rdi->n_pds_lock); 598 rdi->n_pds_allocated = 0; 599 600 /* 601 * There are some things which could be set by underlying drivers but 602 * really should be up to rdmavt to set. For instance drivers can't know 603 * exactly which functions rdmavt supports, nor do they know the ABI 604 * version, so we do all of this sort of stuff here. 605 */ 606 rdi->ibdev.uverbs_cmd_mask = 607 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 608 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 609 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 610 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 611 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 612 (1ull << IB_USER_VERBS_CMD_CREATE_AH) | 613 (1ull << IB_USER_VERBS_CMD_MODIFY_AH) | 614 (1ull << IB_USER_VERBS_CMD_QUERY_AH) | 615 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | 616 (1ull << IB_USER_VERBS_CMD_REG_MR) | 617 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 618 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 619 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 620 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 621 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 622 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 623 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 624 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 625 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 626 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 627 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 628 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 629 (1ull << IB_USER_VERBS_CMD_POST_RECV) | 630 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 631 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 632 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 633 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 634 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 635 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 636 (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); 637 rdi->ibdev.node_type = RDMA_NODE_IB_CA; 638 if (!rdi->ibdev.num_comp_vectors) 639 rdi->ibdev.num_comp_vectors = 1; 640 641 /* We are now good to announce we exist */ 642 ret = ib_register_device(&rdi->ibdev, dev_name(&rdi->ibdev.dev)); 643 if (ret) { 644 rvt_pr_err(rdi, "Failed to register driver with ib core.\n"); 645 goto bail_wss; 646 } 647 648 rvt_create_mad_agents(rdi); 649 650 rvt_pr_info(rdi, "Registration with rdmavt done.\n"); 651 return ret; 652 653 bail_wss: 654 rvt_wss_exit(rdi); 655 bail_mr: 656 rvt_mr_exit(rdi); 657 658 bail_no_mr: 659 rvt_qp_exit(rdi); 660 661 return ret; 662 } 663 EXPORT_SYMBOL(rvt_register_device); 664 665 /** 666 * rvt_unregister_device - remove a driver 667 * @rdi: rvt dev struct 668 */ 669 void rvt_unregister_device(struct rvt_dev_info *rdi) 670 { 671 trace_rvt_dbg(rdi, "Driver is unregistering."); 672 if (!rdi) 673 return; 674 675 rvt_free_mad_agents(rdi); 676 677 ib_unregister_device(&rdi->ibdev); 678 rvt_wss_exit(rdi); 679 rvt_mr_exit(rdi); 680 rvt_qp_exit(rdi); 681 } 682 EXPORT_SYMBOL(rvt_unregister_device); 683 684 /** 685 * rvt_init_port - init internal data for driver port 686 * @rdi: rvt dev strut 687 * @port: rvt port 688 * @port_index: 0 based index of ports, different from IB core port num 689 * 690 * Keep track of a list of ports. No need to have a detach port. 691 * They persist until the driver goes away. 692 * 693 * Return: always 0 694 */ 695 int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port, 696 int port_index, u16 *pkey_table) 697 { 698 699 rdi->ports[port_index] = port; 700 rdi->ports[port_index]->pkey_table = pkey_table; 701 702 return 0; 703 } 704 EXPORT_SYMBOL(rvt_init_port); 705