root/drivers/infiniband/sw/rdmavt/vt.c

DEFINITIONS

1. rvt_init
2. rvt_cleanup
3. rvt_alloc_device
4. rvt_dealloc_device
5. rvt_query_device
6. rvt_modify_device
7. rvt_query_port
8. rvt_modify_port
9. rvt_query_pkey
10. rvt_query_gid
11. to_iucontext
12. rvt_alloc_ucontext
13. rvt_dealloc_ucontext
14. rvt_get_port_immutable
15. check_support
16. rvt_register_device
17. rvt_unregister_device
18. rvt_init_port

   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);