drivers/infiniband/hw/mthca/mthca_provider.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
   7  *
   8  * This software is available to you under a choice of one of two
   9  * licenses.  You may choose to be licensed under the terms of the GNU
  10  * General Public License (GPL) Version 2, available from the file
  11  * COPYING in the main directory of this source tree, or the
  12  * OpenIB.org BSD license below:
  13  *
  14  *     Redistribution and use in source and binary forms, with or
  15  *     without modification, are permitted provided that the following
  16  *     conditions are met:
  17  *
  18  *      - Redistributions of source code must retain the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer.
  21  *
  22  *      - Redistributions in binary form must reproduce the above
  23  *        copyright notice, this list of conditions and the following
  24  *        disclaimer in the documentation and/or other materials
  25  *        provided with the distribution.
  26  *
  27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  34  * SOFTWARE.
  35  */
  36
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_umem.h>
  39 #include <rdma/ib_user_verbs.h>
  40 #include <rdma/uverbs_ioctl.h>
  41
  42 #include <linux/sched.h>
  43 #include <linux/slab.h>
  44 #include <linux/stat.h>
  45 #include <linux/mm.h>
  46 #include <linux/export.h>
  47
  48 #include "mthca_dev.h"
  49 #include "mthca_cmd.h"
  50 #include <rdma/mthca-abi.h>
  51 #include "mthca_memfree.h"
  52
  53 static void init_query_mad(struct ib_smp *mad)
  54 {
  55         mad->base_version  = 1;
  56         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  57         mad->class_version = 1;
  58         mad->method        = IB_MGMT_METHOD_GET;
  59 }
  60
  61 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
  62                               struct ib_udata *uhw)
  63 {
  64         struct ib_smp *in_mad  = NULL;
  65         struct ib_smp *out_mad = NULL;
  66         int err = -ENOMEM;
  67         struct mthca_dev *mdev = to_mdev(ibdev);
  68
  69         if (uhw->inlen || uhw->outlen)
  70                 return -EINVAL;
  71
  72         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  73         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  74         if (!in_mad || !out_mad)
  75                 goto out;
  76
  77         memset(props, 0, sizeof *props);
  78
  79         props->fw_ver              = mdev->fw_ver;
  80
  81         init_query_mad(in_mad);
  82         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  83
  84         err = mthca_MAD_IFC(mdev, 1, 1,
  85                             1, NULL, NULL, in_mad, out_mad);
  86         if (err)
  87                 goto out;
  88
  89         props->device_cap_flags    = mdev->device_cap_flags;
  90         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  91                 0xffffff;
  92         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  93         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  94         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  95
  96         props->max_mr_size         = ~0ull;
  97         props->page_size_cap       = mdev->limits.page_size_cap;
  98         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  99         props->max_qp_wr           = mdev->limits.max_wqes;
 100         props->max_send_sge        = mdev->limits.max_sg;
 101         props->max_recv_sge        = mdev->limits.max_sg;
 102         props->max_sge_rd          = mdev->limits.max_sg;
 103         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 104         props->max_cqe             = mdev->limits.max_cqes;
 105         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 106         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 107         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 108         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 109         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 110         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 111         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 112         props->max_srq_sge         = mdev->limits.max_srq_sge;
 113         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 114         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 115                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 116         props->max_pkeys           = mdev->limits.pkey_table_len;
 117         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 118         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 119         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 120                                            props->max_mcast_grp;
 121         /*
 122          * If Sinai memory key optimization is being used, then only
 123          * the 8-bit key portion will change.  For other HCAs, the
 124          * unused index bits will also be used for FMR remapping.
 125          */
 126         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 127                 props->max_map_per_fmr = 255;
 128         else
 129                 props->max_map_per_fmr =
 130                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 131
 132         err = 0;
 133  out:
 134         kfree(in_mad);
 135         kfree(out_mad);
 136         return err;
 137 }
 138
 139 static int mthca_query_port(struct ib_device *ibdev,
 140                             u8 port, struct ib_port_attr *props)
 141 {
 142         struct ib_smp *in_mad  = NULL;
 143         struct ib_smp *out_mad = NULL;
 144         int err = -ENOMEM;
 145
 146         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 147         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 148         if (!in_mad || !out_mad)
 149                 goto out;
 150
 151         /* props being zeroed by the caller, avoid zeroing it here */
 152
 153         init_query_mad(in_mad);
 154         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 155         in_mad->attr_mod = cpu_to_be32(port);
 156
 157         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 158                             port, NULL, NULL, in_mad, out_mad);
 159         if (err)
 160                 goto out;
 161
 162         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 163         props->lmc               = out_mad->data[34] & 0x7;
 164         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 165         props->sm_sl             = out_mad->data[36] & 0xf;
 166         props->state             = out_mad->data[32] & 0xf;
 167         props->phys_state        = out_mad->data[33] >> 4;
 168         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 169         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 170         props->max_msg_sz        = 0x80000000;
 171         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 172         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 173         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 174         props->active_width      = out_mad->data[31] & 0xf;
 175         props->active_speed      = out_mad->data[35] >> 4;
 176         props->max_mtu           = out_mad->data[41] & 0xf;
 177         props->active_mtu        = out_mad->data[36] >> 4;
 178         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 179         props->max_vl_num        = out_mad->data[37] >> 4;
 180         props->init_type_reply   = out_mad->data[41] >> 4;
 181
 182  out:
 183         kfree(in_mad);
 184         kfree(out_mad);
 185         return err;
 186 }
 187
 188 static int mthca_modify_device(struct ib_device *ibdev,
 189                                int mask,
 190                                struct ib_device_modify *props)
 191 {
 192         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 193                 return -EOPNOTSUPP;
 194
 195         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 196                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 197                         return -ERESTARTSYS;
 198                 memcpy(ibdev->node_desc, props->node_desc,
 199                        IB_DEVICE_NODE_DESC_MAX);
 200                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 201         }
 202
 203         return 0;
 204 }
 205
 206 static int mthca_modify_port(struct ib_device *ibdev,
 207                              u8 port, int port_modify_mask,
 208                              struct ib_port_modify *props)
 209 {
 210         struct mthca_set_ib_param set_ib;
 211         struct ib_port_attr attr;
 212         int err;
 213
 214         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 215                 return -ERESTARTSYS;
 216
 217         err = ib_query_port(ibdev, port, &attr);
 218         if (err)
 219                 goto out;
 220
 221         set_ib.set_si_guid     = 0;
 222         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 223
 224         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 225                 ~props->clr_port_cap_mask;
 226
 227         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 228         if (err)
 229                 goto out;
 230 out:
 231         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 232         return err;
 233 }
 234
 235 static int mthca_query_pkey(struct ib_device *ibdev,
 236                             u8 port, u16 index, u16 *pkey)
 237 {
 238         struct ib_smp *in_mad  = NULL;
 239         struct ib_smp *out_mad = NULL;
 240         int err = -ENOMEM;
 241
 242         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 243         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 244         if (!in_mad || !out_mad)
 245                 goto out;
 246
 247         init_query_mad(in_mad);
 248         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 249         in_mad->attr_mod = cpu_to_be32(index / 32);
 250
 251         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 252                             port, NULL, NULL, in_mad, out_mad);
 253         if (err)
 254                 goto out;
 255
 256         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 257
 258  out:
 259         kfree(in_mad);
 260         kfree(out_mad);
 261         return err;
 262 }
 263
 264 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 265                            int index, union ib_gid *gid)
 266 {
 267         struct ib_smp *in_mad  = NULL;
 268         struct ib_smp *out_mad = NULL;
 269         int err = -ENOMEM;
 270
 271         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 272         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 273         if (!in_mad || !out_mad)
 274                 goto out;
 275
 276         init_query_mad(in_mad);
 277         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 278         in_mad->attr_mod = cpu_to_be32(port);
 279
 280         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 281                             port, NULL, NULL, in_mad, out_mad);
 282         if (err)
 283                 goto out;
 284
 285         memcpy(gid->raw, out_mad->data + 8, 8);
 286
 287         init_query_mad(in_mad);
 288         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 289         in_mad->attr_mod = cpu_to_be32(index / 8);
 290
 291         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 292                             port, NULL, NULL, in_mad, out_mad);
 293         if (err)
 294                 goto out;
 295
 296         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 297
 298  out:
 299         kfree(in_mad);
 300         kfree(out_mad);
 301         return err;
 302 }
 303
 304 static int mthca_alloc_ucontext(struct ib_ucontext *uctx,
 305                                 struct ib_udata *udata)
 306 {
 307         struct ib_device *ibdev = uctx->device;
 308         struct mthca_alloc_ucontext_resp uresp = {};
 309         struct mthca_ucontext *context = to_mucontext(uctx);
 310         int                              err;
 311
 312         if (!(to_mdev(ibdev)->active))
 313                 return -EAGAIN;
 314
 315         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 316         if (mthca_is_memfree(to_mdev(ibdev)))
 317                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 318         else
 319                 uresp.uarc_size = 0;
 320
 321         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 322         if (err)
 323                 return err;
 324
 325         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 326         if (IS_ERR(context->db_tab)) {
 327                 err = PTR_ERR(context->db_tab);
 328                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 329                 return err;
 330         }
 331
 332         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 333                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 334                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 335                 return -EFAULT;
 336         }
 337
 338         context->reg_mr_warned = 0;
 339
 340         return 0;
 341 }
 342
 343 static void mthca_dealloc_ucontext(struct ib_ucontext *context)
 344 {
 345         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 346                                   to_mucontext(context)->db_tab);
 347         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 348 }
 349
 350 static int mthca_mmap_uar(struct ib_ucontext *context,
 351                           struct vm_area_struct *vma)
 352 {
 353         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 354                 return -EINVAL;
 355
 356         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 357
 358         if (io_remap_pfn_range(vma, vma->vm_start,
 359                                to_mucontext(context)->uar.pfn,
 360                                PAGE_SIZE, vma->vm_page_prot))
 361                 return -EAGAIN;
 362
 363         return 0;
 364 }
 365
 366 static int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 367 {
 368         struct ib_device *ibdev = ibpd->device;
 369         struct mthca_pd *pd = to_mpd(ibpd);
 370         int err;
 371
 372         err = mthca_pd_alloc(to_mdev(ibdev), !udata, pd);
 373         if (err)
 374                 return err;
 375
 376         if (udata) {
 377                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 378                         mthca_pd_free(to_mdev(ibdev), pd);
 379                         return -EFAULT;
 380                 }
 381         }
 382
 383         return 0;
 384 }
 385
 386 static void mthca_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
 387 {
 388         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 389 }
 390
 391 static int mthca_ah_create(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr,
 392                            u32 flags, struct ib_udata *udata)
 393
 394 {
 395         struct mthca_ah *ah = to_mah(ibah);
 396
 397         return mthca_create_ah(to_mdev(ibah->device), to_mpd(ibah->pd), ah_attr,
 398                                ah);
 399 }
 400
 401 static void mthca_ah_destroy(struct ib_ah *ah, u32 flags)
 402 {
 403         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 404 }
 405
 406 static int mthca_create_srq(struct ib_srq *ibsrq,
 407                             struct ib_srq_init_attr *init_attr,
 408                             struct ib_udata *udata)
 409 {
 410         struct mthca_create_srq ucmd;
 411         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 412                 udata, struct mthca_ucontext, ibucontext);
 413         struct mthca_srq *srq = to_msrq(ibsrq);
 414         int err;
 415
 416         if (init_attr->srq_type != IB_SRQT_BASIC)
 417                 return -EOPNOTSUPP;
 418
 419         if (udata) {
 420                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
 421                         return -EFAULT;
 422
 423                 err = mthca_map_user_db(to_mdev(ibsrq->device), &context->uar,
 424                                         context->db_tab, ucmd.db_index,
 425                                         ucmd.db_page);
 426
 427                 if (err)
 428                         return err;
 429
 430                 srq->mr.ibmr.lkey = ucmd.lkey;
 431                 srq->db_index     = ucmd.db_index;
 432         }
 433
 434         err = mthca_alloc_srq(to_mdev(ibsrq->device), to_mpd(ibsrq->pd),
 435                               &init_attr->attr, srq, udata);
 436
 437         if (err && udata)
 438                 mthca_unmap_user_db(to_mdev(ibsrq->device), &context->uar,
 439                                     context->db_tab, ucmd.db_index);
 440
 441         if (err)
 442                 return err;
 443
 444         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof(__u32))) {
 445                 mthca_free_srq(to_mdev(ibsrq->device), srq);
 446                 return -EFAULT;
 447         }
 448
 449         return 0;
 450 }
 451
 452 static void mthca_destroy_srq(struct ib_srq *srq, struct ib_udata *udata)
 453 {
 454         if (udata) {
 455                 struct mthca_ucontext *context =
 456                         rdma_udata_to_drv_context(
 457                                 udata,
 458                                 struct mthca_ucontext,
 459                                 ibucontext);
 460
 461                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 462                                     context->db_tab, to_msrq(srq)->db_index);
 463         }
 464
 465         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 466 }
 467
 468 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 469                                      struct ib_qp_init_attr *init_attr,
 470                                      struct ib_udata *udata)
 471 {
 472         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 473                 udata, struct mthca_ucontext, ibucontext);
 474         struct mthca_create_qp ucmd;
 475         struct mthca_qp *qp;
 476         int err;
 477
 478         if (init_attr->create_flags)
 479                 return ERR_PTR(-EINVAL);
 480
 481         switch (init_attr->qp_type) {
 482         case IB_QPT_RC:
 483         case IB_QPT_UC:
 484         case IB_QPT_UD:
 485         {
 486                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
 487                 if (!qp)
 488                         return ERR_PTR(-ENOMEM);
 489
 490                 if (udata) {
 491                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 492                                 kfree(qp);
 493                                 return ERR_PTR(-EFAULT);
 494                         }
 495
 496                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 497                                                 context->db_tab,
 498                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 499                         if (err) {
 500                                 kfree(qp);
 501                                 return ERR_PTR(err);
 502                         }
 503
 504                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 505                                                 context->db_tab,
 506                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 507                         if (err) {
 508                                 mthca_unmap_user_db(to_mdev(pd->device),
 509                                                     &context->uar,
 510                                                     context->db_tab,
 511                                                     ucmd.sq_db_index);
 512                                 kfree(qp);
 513                                 return ERR_PTR(err);
 514                         }
 515
 516                         qp->mr.ibmr.lkey = ucmd.lkey;
 517                         qp->sq.db_index  = ucmd.sq_db_index;
 518                         qp->rq.db_index  = ucmd.rq_db_index;
 519                 }
 520
 521                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 522                                      to_mcq(init_attr->send_cq),
 523                                      to_mcq(init_attr->recv_cq),
 524                                      init_attr->qp_type, init_attr->sq_sig_type,
 525                                      &init_attr->cap, qp, udata);
 526
 527                 if (err && udata) {
 528                         mthca_unmap_user_db(to_mdev(pd->device),
 529                                             &context->uar,
 530                                             context->db_tab,
 531                                             ucmd.sq_db_index);
 532                         mthca_unmap_user_db(to_mdev(pd->device),
 533                                             &context->uar,
 534                                             context->db_tab,
 535                                             ucmd.rq_db_index);
 536                 }
 537
 538                 qp->ibqp.qp_num = qp->qpn;
 539                 break;
 540         }
 541         case IB_QPT_SMI:
 542         case IB_QPT_GSI:
 543         {
 544                 /* Don't allow userspace to create special QPs */
 545                 if (udata)
 546                         return ERR_PTR(-EINVAL);
 547
 548                 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
 549                 if (!qp)
 550                         return ERR_PTR(-ENOMEM);
 551
 552                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 553
 554                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 555                                       to_mcq(init_attr->send_cq),
 556                                       to_mcq(init_attr->recv_cq),
 557                                       init_attr->sq_sig_type, &init_attr->cap,
 558                                       qp->ibqp.qp_num, init_attr->port_num,
 559                                       to_msqp(qp), udata);
 560                 break;
 561         }
 562         default:
 563                 /* Don't support raw QPs */
 564                 return ERR_PTR(-ENOSYS);
 565         }
 566
 567         if (err) {
 568                 kfree(qp);
 569                 return ERR_PTR(err);
 570         }
 571
 572         init_attr->cap.max_send_wr     = qp->sq.max;
 573         init_attr->cap.max_recv_wr     = qp->rq.max;
 574         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 575         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 576         init_attr->cap.max_inline_data = qp->max_inline_data;
 577
 578         return &qp->ibqp;
 579 }
 580
 581 static int mthca_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
 582 {
 583         if (udata) {
 584                 struct mthca_ucontext *context =
 585                         rdma_udata_to_drv_context(
 586                                 udata,
 587                                 struct mthca_ucontext,
 588                                 ibucontext);
 589
 590                 mthca_unmap_user_db(to_mdev(qp->device),
 591                                     &context->uar,
 592                                     context->db_tab,
 593                                     to_mqp(qp)->sq.db_index);
 594                 mthca_unmap_user_db(to_mdev(qp->device),
 595                                     &context->uar,
 596                                     context->db_tab,
 597                                     to_mqp(qp)->rq.db_index);
 598         }
 599         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 600         kfree(qp);
 601         return 0;
 602 }
 603
 604 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 605                                      const struct ib_cq_init_attr *attr,
 606                                      struct ib_udata *udata)
 607 {
 608         int entries = attr->cqe;
 609         struct mthca_create_cq ucmd;
 610         struct mthca_cq *cq;
 611         int nent;
 612         int err;
 613         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 614                 udata, struct mthca_ucontext, ibucontext);
 615
 616         if (attr->flags)
 617                 return ERR_PTR(-EINVAL);
 618
 619         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 620                 return ERR_PTR(-EINVAL);
 621
 622         if (udata) {
 623                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 624                         return ERR_PTR(-EFAULT);
 625
 626                 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
 627                                         context->db_tab, ucmd.set_db_index,
 628                                         ucmd.set_db_page);
 629                 if (err)
 630                         return ERR_PTR(err);
 631
 632                 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
 633                                         context->db_tab, ucmd.arm_db_index,
 634                                         ucmd.arm_db_page);
 635                 if (err)
 636                         goto err_unmap_set;
 637         }
 638
 639         cq = kzalloc(sizeof(*cq), GFP_KERNEL);
 640         if (!cq) {
 641                 err = -ENOMEM;
 642                 goto err_unmap_arm;
 643         }
 644
 645         if (udata) {
 646                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 647                 cq->set_ci_db_index  = ucmd.set_db_index;
 648                 cq->arm_db_index     = ucmd.arm_db_index;
 649         }
 650
 651         for (nent = 1; nent <= entries; nent <<= 1)
 652                 ; /* nothing */
 653
 654         err = mthca_init_cq(to_mdev(ibdev), nent, context,
 655                             udata ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 656                             cq);
 657         if (err)
 658                 goto err_free;
 659
 660         if (udata && ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) {
 661                 mthca_free_cq(to_mdev(ibdev), cq);
 662                 err = -EFAULT;
 663                 goto err_free;
 664         }
 665
 666         cq->resize_buf = NULL;
 667
 668         return &cq->ibcq;
 669
 670 err_free:
 671         kfree(cq);
 672
 673 err_unmap_arm:
 674         if (udata)
 675                 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
 676                                     context->db_tab, ucmd.arm_db_index);
 677
 678 err_unmap_set:
 679         if (udata)
 680                 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
 681                                     context->db_tab, ucmd.set_db_index);
 682
 683         return ERR_PTR(err);
 684 }
 685
 686 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 687                                   int entries)
 688 {
 689         int ret;
 690
 691         spin_lock_irq(&cq->lock);
 692         if (cq->resize_buf) {
 693                 ret = -EBUSY;
 694                 goto unlock;
 695         }
 696
 697         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 698         if (!cq->resize_buf) {
 699                 ret = -ENOMEM;
 700                 goto unlock;
 701         }
 702
 703         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 704
 705         ret = 0;
 706
 707 unlock:
 708         spin_unlock_irq(&cq->lock);
 709
 710         if (ret)
 711                 return ret;
 712
 713         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 714         if (ret) {
 715                 spin_lock_irq(&cq->lock);
 716                 kfree(cq->resize_buf);
 717                 cq->resize_buf = NULL;
 718                 spin_unlock_irq(&cq->lock);
 719                 return ret;
 720         }
 721
 722         cq->resize_buf->cqe = entries - 1;
 723
 724         spin_lock_irq(&cq->lock);
 725         cq->resize_buf->state = CQ_RESIZE_READY;
 726         spin_unlock_irq(&cq->lock);
 727
 728         return 0;
 729 }
 730
 731 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 732 {
 733         struct mthca_dev *dev = to_mdev(ibcq->device);
 734         struct mthca_cq *cq = to_mcq(ibcq);
 735         struct mthca_resize_cq ucmd;
 736         u32 lkey;
 737         int ret;
 738
 739         if (entries < 1 || entries > dev->limits.max_cqes)
 740                 return -EINVAL;
 741
 742         mutex_lock(&cq->mutex);
 743
 744         entries = roundup_pow_of_two(entries + 1);
 745         if (entries == ibcq->cqe + 1) {
 746                 ret = 0;
 747                 goto out;
 748         }
 749
 750         if (cq->is_kernel) {
 751                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 752                 if (ret)
 753                         goto out;
 754                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 755         } else {
 756                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 757                         ret = -EFAULT;
 758                         goto out;
 759                 }
 760                 lkey = ucmd.lkey;
 761         }
 762
 763         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 764
 765         if (ret) {
 766                 if (cq->resize_buf) {
 767                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 768                                           cq->resize_buf->cqe);
 769                         kfree(cq->resize_buf);
 770                         spin_lock_irq(&cq->lock);
 771                         cq->resize_buf = NULL;
 772                         spin_unlock_irq(&cq->lock);
 773                 }
 774                 goto out;
 775         }
 776
 777         if (cq->is_kernel) {
 778                 struct mthca_cq_buf tbuf;
 779                 int tcqe;
 780
 781                 spin_lock_irq(&cq->lock);
 782                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 783                         mthca_cq_resize_copy_cqes(cq);
 784                         tbuf         = cq->buf;
 785                         tcqe         = cq->ibcq.cqe;
 786                         cq->buf      = cq->resize_buf->buf;
 787                         cq->ibcq.cqe = cq->resize_buf->cqe;
 788                 } else {
 789                         tbuf = cq->resize_buf->buf;
 790                         tcqe = cq->resize_buf->cqe;
 791                 }
 792
 793                 kfree(cq->resize_buf);
 794                 cq->resize_buf = NULL;
 795                 spin_unlock_irq(&cq->lock);
 796
 797                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 798         } else
 799                 ibcq->cqe = entries - 1;
 800
 801 out:
 802         mutex_unlock(&cq->mutex);
 803
 804         return ret;
 805 }
 806
 807 static int mthca_destroy_cq(struct ib_cq *cq, struct ib_udata *udata)
 808 {
 809         if (udata) {
 810                 struct mthca_ucontext *context =
 811                         rdma_udata_to_drv_context(
 812                                 udata,
 813                                 struct mthca_ucontext,
 814                                 ibucontext);
 815
 816                 mthca_unmap_user_db(to_mdev(cq->device),
 817                                     &context->uar,
 818                                     context->db_tab,
 819                                     to_mcq(cq)->arm_db_index);
 820                 mthca_unmap_user_db(to_mdev(cq->device),
 821                                     &context->uar,
 822                                     context->db_tab,
 823                                     to_mcq(cq)->set_ci_db_index);
 824         }
 825         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 826         kfree(cq);
 827
 828         return 0;
 829 }
 830
 831 static inline u32 convert_access(int acc)
 832 {
 833         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 834                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 835                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 836                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 837                MTHCA_MPT_FLAG_LOCAL_READ;
 838 }
 839
 840 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 841 {
 842         struct mthca_mr *mr;
 843         int err;
 844
 845         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 846         if (!mr)
 847                 return ERR_PTR(-ENOMEM);
 848
 849         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 850                                      to_mpd(pd)->pd_num,
 851                                      convert_access(acc), mr);
 852
 853         if (err) {
 854                 kfree(mr);
 855                 return ERR_PTR(err);
 856         }
 857
 858         mr->umem = NULL;
 859
 860         return &mr->ibmr;
 861 }
 862
 863 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 864                                        u64 virt, int acc, struct ib_udata *udata)
 865 {
 866         struct mthca_dev *dev = to_mdev(pd->device);
 867         struct sg_dma_page_iter sg_iter;
 868         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 869                 udata, struct mthca_ucontext, ibucontext);
 870         struct mthca_mr *mr;
 871         struct mthca_reg_mr ucmd;
 872         u64 *pages;
 873         int n, i;
 874         int err = 0;
 875         int write_mtt_size;
 876
 877         if (udata->inlen < sizeof ucmd) {
 878                 if (!context->reg_mr_warned) {
 879                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 880                                    current->comm);
 881                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 882                 }
 883                 ++context->reg_mr_warned;
 884                 ucmd.mr_attrs = 0;
 885         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 886                 return ERR_PTR(-EFAULT);
 887
 888         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 889         if (!mr)
 890                 return ERR_PTR(-ENOMEM);
 891
 892         mr->umem = ib_umem_get(udata, start, length, acc,
 893                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
 894
 895         if (IS_ERR(mr->umem)) {
 896                 err = PTR_ERR(mr->umem);
 897                 goto err;
 898         }
 899
 900         n = ib_umem_num_pages(mr->umem);
 901
 902         mr->mtt = mthca_alloc_mtt(dev, n);
 903         if (IS_ERR(mr->mtt)) {
 904                 err = PTR_ERR(mr->mtt);
 905                 goto err_umem;
 906         }
 907
 908         pages = (u64 *) __get_free_page(GFP_KERNEL);
 909         if (!pages) {
 910                 err = -ENOMEM;
 911                 goto err_mtt;
 912         }
 913
 914         i = n = 0;
 915
 916         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
 917
 918         for_each_sg_dma_page(mr->umem->sg_head.sgl, &sg_iter, mr->umem->nmap, 0) {
 919                 pages[i++] = sg_page_iter_dma_address(&sg_iter);
 920
 921                 /*
 922                  * Be friendly to write_mtt and pass it chunks
 923                  * of appropriate size.
 924                  */
 925                 if (i == write_mtt_size) {
 926                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 927                         if (err)
 928                                 goto mtt_done;
 929                         n += i;
 930                         i = 0;
 931                 }
 932         }
 933
 934         if (i)
 935                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 936 mtt_done:
 937         free_page((unsigned long) pages);
 938         if (err)
 939                 goto err_mtt;
 940
 941         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, PAGE_SHIFT, virt, length,
 942                              convert_access(acc), mr);
 943
 944         if (err)
 945                 goto err_mtt;
 946
 947         return &mr->ibmr;
 948
 949 err_mtt:
 950         mthca_free_mtt(dev, mr->mtt);
 951
 952 err_umem:
 953         ib_umem_release(mr->umem);
 954
 955 err:
 956         kfree(mr);
 957         return ERR_PTR(err);
 958 }
 959
 960 static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata)
 961 {
 962         struct mthca_mr *mmr = to_mmr(mr);
 963
 964         mthca_free_mr(to_mdev(mr->device), mmr);
 965         if (mmr->umem)
 966                 ib_umem_release(mmr->umem);
 967         kfree(mmr);
 968
 969         return 0;
 970 }
 971
 972 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
 973                                       struct ib_fmr_attr *fmr_attr)
 974 {
 975         struct mthca_fmr *fmr;
 976         int err;
 977
 978         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
 979         if (!fmr)
 980                 return ERR_PTR(-ENOMEM);
 981
 982         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
 983         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
 984                              convert_access(mr_access_flags), fmr);
 985
 986         if (err) {
 987                 kfree(fmr);
 988                 return ERR_PTR(err);
 989         }
 990
 991         return &fmr->ibmr;
 992 }
 993
 994 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
 995 {
 996         struct mthca_fmr *mfmr = to_mfmr(fmr);
 997         int err;
 998
 999         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1000         if (err)
1001                 return err;
1002
1003         kfree(mfmr);
1004         return 0;
1005 }
1006
1007 static int mthca_unmap_fmr(struct list_head *fmr_list)
1008 {
1009         struct ib_fmr *fmr;
1010         int err;
1011         struct mthca_dev *mdev = NULL;
1012
1013         list_for_each_entry(fmr, fmr_list, list) {
1014                 if (mdev && to_mdev(fmr->device) != mdev)
1015                         return -EINVAL;
1016                 mdev = to_mdev(fmr->device);
1017         }
1018
1019         if (!mdev)
1020                 return 0;
1021
1022         if (mthca_is_memfree(mdev)) {
1023                 list_for_each_entry(fmr, fmr_list, list)
1024                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1025
1026                 wmb();
1027         } else
1028                 list_for_each_entry(fmr, fmr_list, list)
1029                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1030
1031         err = mthca_SYNC_TPT(mdev);
1032         return err;
1033 }
1034
1035 static ssize_t hw_rev_show(struct device *device,
1036                            struct device_attribute *attr, char *buf)
1037 {
1038         struct mthca_dev *dev =
1039                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1040
1041         return sprintf(buf, "%x\n", dev->rev_id);
1042 }
1043 static DEVICE_ATTR_RO(hw_rev);
1044
1045 static ssize_t hca_type_show(struct device *device,
1046                              struct device_attribute *attr, char *buf)
1047 {
1048         struct mthca_dev *dev =
1049                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1050
1051         switch (dev->pdev->device) {
1052         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1053                 return sprintf(buf, "MT23108\n");
1054         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1055                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1056         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1057                 return sprintf(buf, "MT25208\n");
1058         case PCI_DEVICE_ID_MELLANOX_SINAI:
1059         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1060                 return sprintf(buf, "MT25204\n");
1061         default:
1062                 return sprintf(buf, "unknown\n");
1063         }
1064 }
1065 static DEVICE_ATTR_RO(hca_type);
1066
1067 static ssize_t board_id_show(struct device *device,
1068                              struct device_attribute *attr, char *buf)
1069 {
1070         struct mthca_dev *dev =
1071                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1072
1073         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1074 }
1075 static DEVICE_ATTR_RO(board_id);
1076
1077 static struct attribute *mthca_dev_attributes[] = {
1078         &dev_attr_hw_rev.attr,
1079         &dev_attr_hca_type.attr,
1080         &dev_attr_board_id.attr,
1081         NULL
1082 };
1083
1084 static const struct attribute_group mthca_attr_group = {
1085         .attrs = mthca_dev_attributes,
1086 };
1087
1088 static int mthca_init_node_data(struct mthca_dev *dev)
1089 {
1090         struct ib_smp *in_mad  = NULL;
1091         struct ib_smp *out_mad = NULL;
1092         int err = -ENOMEM;
1093
1094         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1095         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1096         if (!in_mad || !out_mad)
1097                 goto out;
1098
1099         init_query_mad(in_mad);
1100         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1101
1102         err = mthca_MAD_IFC(dev, 1, 1,
1103                             1, NULL, NULL, in_mad, out_mad);
1104         if (err)
1105                 goto out;
1106
1107         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1108
1109         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1110
1111         err = mthca_MAD_IFC(dev, 1, 1,
1112                             1, NULL, NULL, in_mad, out_mad);
1113         if (err)
1114                 goto out;
1115
1116         if (mthca_is_memfree(dev))
1117                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1118         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1119
1120 out:
1121         kfree(in_mad);
1122         kfree(out_mad);
1123         return err;
1124 }
1125
1126 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1127                                 struct ib_port_immutable *immutable)
1128 {
1129         struct ib_port_attr attr;
1130         int err;
1131
1132         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1133
1134         err = ib_query_port(ibdev, port_num, &attr);
1135         if (err)
1136                 return err;
1137
1138         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1139         immutable->gid_tbl_len = attr.gid_tbl_len;
1140         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1141
1142         return 0;
1143 }
1144
1145 static void get_dev_fw_str(struct ib_device *device, char *str)
1146 {
1147         struct mthca_dev *dev =
1148                 container_of(device, struct mthca_dev, ib_dev);
1149         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1150                  (int) (dev->fw_ver >> 32),
1151                  (int) (dev->fw_ver >> 16) & 0xffff,
1152                  (int) dev->fw_ver & 0xffff);
1153 }
1154
1155 static const struct ib_device_ops mthca_dev_ops = {
1156         .alloc_pd = mthca_alloc_pd,
1157         .alloc_ucontext = mthca_alloc_ucontext,
1158         .attach_mcast = mthca_multicast_attach,
1159         .create_ah = mthca_ah_create,
1160         .create_cq = mthca_create_cq,
1161         .create_qp = mthca_create_qp,
1162         .dealloc_pd = mthca_dealloc_pd,
1163         .dealloc_ucontext = mthca_dealloc_ucontext,
1164         .dereg_mr = mthca_dereg_mr,
1165         .destroy_ah = mthca_ah_destroy,
1166         .destroy_cq = mthca_destroy_cq,
1167         .destroy_qp = mthca_destroy_qp,
1168         .detach_mcast = mthca_multicast_detach,
1169         .get_dev_fw_str = get_dev_fw_str,
1170         .get_dma_mr = mthca_get_dma_mr,
1171         .get_port_immutable = mthca_port_immutable,
1172         .mmap = mthca_mmap_uar,
1173         .modify_device = mthca_modify_device,
1174         .modify_port = mthca_modify_port,
1175         .modify_qp = mthca_modify_qp,
1176         .poll_cq = mthca_poll_cq,
1177         .process_mad = mthca_process_mad,
1178         .query_ah = mthca_ah_query,
1179         .query_device = mthca_query_device,
1180         .query_gid = mthca_query_gid,
1181         .query_pkey = mthca_query_pkey,
1182         .query_port = mthca_query_port,
1183         .query_qp = mthca_query_qp,
1184         .reg_user_mr = mthca_reg_user_mr,
1185         .resize_cq = mthca_resize_cq,
1186
1187         INIT_RDMA_OBJ_SIZE(ib_ah, mthca_ah, ibah),
1188         INIT_RDMA_OBJ_SIZE(ib_pd, mthca_pd, ibpd),
1189         INIT_RDMA_OBJ_SIZE(ib_ucontext, mthca_ucontext, ibucontext),
1190 };
1191
1192 static const struct ib_device_ops mthca_dev_arbel_srq_ops = {
1193         .create_srq = mthca_create_srq,
1194         .destroy_srq = mthca_destroy_srq,
1195         .modify_srq = mthca_modify_srq,
1196         .post_srq_recv = mthca_arbel_post_srq_recv,
1197         .query_srq = mthca_query_srq,
1198
1199         INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq),
1200 };
1201
1202 static const struct ib_device_ops mthca_dev_tavor_srq_ops = {
1203         .create_srq = mthca_create_srq,
1204         .destroy_srq = mthca_destroy_srq,
1205         .modify_srq = mthca_modify_srq,
1206         .post_srq_recv = mthca_tavor_post_srq_recv,
1207         .query_srq = mthca_query_srq,
1208
1209         INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq),
1210 };
1211
1212 static const struct ib_device_ops mthca_dev_arbel_fmr_ops = {
1213         .alloc_fmr = mthca_alloc_fmr,
1214         .dealloc_fmr = mthca_dealloc_fmr,
1215         .map_phys_fmr = mthca_arbel_map_phys_fmr,
1216         .unmap_fmr = mthca_unmap_fmr,
1217 };
1218
1219 static const struct ib_device_ops mthca_dev_tavor_fmr_ops = {
1220         .alloc_fmr = mthca_alloc_fmr,
1221         .dealloc_fmr = mthca_dealloc_fmr,
1222         .map_phys_fmr = mthca_tavor_map_phys_fmr,
1223         .unmap_fmr = mthca_unmap_fmr,
1224 };
1225
1226 static const struct ib_device_ops mthca_dev_arbel_ops = {
1227         .post_recv = mthca_arbel_post_receive,
1228         .post_send = mthca_arbel_post_send,
1229         .req_notify_cq = mthca_arbel_arm_cq,
1230 };
1231
1232 static const struct ib_device_ops mthca_dev_tavor_ops = {
1233         .post_recv = mthca_tavor_post_receive,
1234         .post_send = mthca_tavor_post_send,
1235         .req_notify_cq = mthca_tavor_arm_cq,
1236 };
1237
1238 int mthca_register_device(struct mthca_dev *dev)
1239 {
1240         int ret;
1241
1242         ret = mthca_init_node_data(dev);
1243         if (ret)
1244                 return ret;
1245
1246         dev->ib_dev.owner                = THIS_MODULE;
1247
1248         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1249         dev->ib_dev.uverbs_cmd_mask      =
1250                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1251                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1252                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1253                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1254                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1255                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1256                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1257                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1258                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1259                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1260                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1261                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1262                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1263                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1264                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1265                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1266                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1267         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1268         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1269         dev->ib_dev.num_comp_vectors     = 1;
1270         dev->ib_dev.dev.parent           = &dev->pdev->dev;
1271
1272         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1273                 dev->ib_dev.uverbs_cmd_mask     |=
1274                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1275                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1276                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1277                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1278
1279                 if (mthca_is_memfree(dev))
1280                         ib_set_device_ops(&dev->ib_dev,
1281                                           &mthca_dev_arbel_srq_ops);
1282                 else
1283                         ib_set_device_ops(&dev->ib_dev,
1284                                           &mthca_dev_tavor_srq_ops);
1285         }
1286
1287         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1288                 if (mthca_is_memfree(dev))
1289                         ib_set_device_ops(&dev->ib_dev,
1290                                           &mthca_dev_arbel_fmr_ops);
1291                 else
1292                         ib_set_device_ops(&dev->ib_dev,
1293                                           &mthca_dev_tavor_fmr_ops);
1294         }
1295
1296         ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops);
1297
1298         if (mthca_is_memfree(dev))
1299                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_arbel_ops);
1300         else
1301                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_tavor_ops);
1302
1303         mutex_init(&dev->cap_mask_mutex);
1304
1305         rdma_set_device_sysfs_group(&dev->ib_dev, &mthca_attr_group);
1306         dev->ib_dev.driver_id = RDMA_DRIVER_MTHCA;
1307         ret = ib_register_device(&dev->ib_dev, "mthca%d");
1308         if (ret)
1309                 return ret;
1310
1311         mthca_start_catas_poll(dev);
1312
1313         return 0;
1314 }
1315
1316 void mthca_unregister_device(struct mthca_dev *dev)
1317 {
1318         mthca_stop_catas_poll(dev);
1319         ib_unregister_device(&dev->ib_dev);
1320 }