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