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
  41 #include <linux/sched.h>
  42 #include <linux/slab.h>
  43 #include <linux/stat.h>
  44 #include <linux/mm.h>
  45 #include <linux/export.h>
  46
  47 #include "mthca_dev.h"
  48 #include "mthca_cmd.h"
  49 #include "mthca_user.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,
  61                               struct ib_device_attr *props)
  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         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  69         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  70         if (!in_mad || !out_mad)
  71                 goto out;
  72
  73         memset(props, 0, sizeof *props);
  74
  75         props->fw_ver              = mdev->fw_ver;
  76
  77         init_query_mad(in_mad);
  78         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  79
  80         err = mthca_MAD_IFC(mdev, 1, 1,
  81                             1, NULL, NULL, in_mad, out_mad);
  82         if (err)
  83                 goto out;
  84
  85         props->device_cap_flags    = mdev->device_cap_flags;
  86         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  87                 0xffffff;
  88         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  89         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  90         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  91
  92         props->max_mr_size         = ~0ull;
  93         props->page_size_cap       = mdev->limits.page_size_cap;
  94         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  95         props->max_qp_wr           = mdev->limits.max_wqes;
  96         props->max_sge             = mdev->limits.max_sg;
  97         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
  98         props->max_cqe             = mdev->limits.max_cqes;
  99         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 100         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 101         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 102         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 103         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 104         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 105         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 106         props->max_srq_sge         = mdev->limits.max_srq_sge;
 107         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 108         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 109                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 110         props->max_pkeys           = mdev->limits.pkey_table_len;
 111         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 112         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 113         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 114                                            props->max_mcast_grp;
 115         /*
 116          * If Sinai memory key optimization is being used, then only
 117          * the 8-bit key portion will change.  For other HCAs, the
 118          * unused index bits will also be used for FMR remapping.
 119          */
 120         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 121                 props->max_map_per_fmr = 255;
 122         else
 123                 props->max_map_per_fmr =
 124                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 125
 126         err = 0;
 127  out:
 128         kfree(in_mad);
 129         kfree(out_mad);
 130         return err;
 131 }
 132
 133 static int mthca_query_port(struct ib_device *ibdev,
 134                             u8 port, struct ib_port_attr *props)
 135 {
 136         struct ib_smp *in_mad  = NULL;
 137         struct ib_smp *out_mad = NULL;
 138         int err = -ENOMEM;
 139
 140         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 141         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 142         if (!in_mad || !out_mad)
 143                 goto out;
 144
 145         memset(props, 0, sizeof *props);
 146
 147         init_query_mad(in_mad);
 148         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 149         in_mad->attr_mod = cpu_to_be32(port);
 150
 151         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 152                             port, NULL, NULL, in_mad, out_mad);
 153         if (err)
 154                 goto out;
 155
 156         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 157         props->lmc               = out_mad->data[34] & 0x7;
 158         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 159         props->sm_sl             = out_mad->data[36] & 0xf;
 160         props->state             = out_mad->data[32] & 0xf;
 161         props->phys_state        = out_mad->data[33] >> 4;
 162         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 163         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 164         props->max_msg_sz        = 0x80000000;
 165         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 166         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 167         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 168         props->active_width      = out_mad->data[31] & 0xf;
 169         props->active_speed      = out_mad->data[35] >> 4;
 170         props->max_mtu           = out_mad->data[41] & 0xf;
 171         props->active_mtu        = out_mad->data[36] >> 4;
 172         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 173         props->max_vl_num        = out_mad->data[37] >> 4;
 174         props->init_type_reply   = out_mad->data[41] >> 4;
 175
 176  out:
 177         kfree(in_mad);
 178         kfree(out_mad);
 179         return err;
 180 }
 181
 182 static int mthca_modify_device(struct ib_device *ibdev,
 183                                int mask,
 184                                struct ib_device_modify *props)
 185 {
 186         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 187                 return -EOPNOTSUPP;
 188
 189         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 190                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 191                         return -ERESTARTSYS;
 192                 memcpy(ibdev->node_desc, props->node_desc, 64);
 193                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 194         }
 195
 196         return 0;
 197 }
 198
 199 static int mthca_modify_port(struct ib_device *ibdev,
 200                              u8 port, int port_modify_mask,
 201                              struct ib_port_modify *props)
 202 {
 203         struct mthca_set_ib_param set_ib;
 204         struct ib_port_attr attr;
 205         int err;
 206
 207         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 208                 return -ERESTARTSYS;
 209
 210         err = mthca_query_port(ibdev, port, &attr);
 211         if (err)
 212                 goto out;
 213
 214         set_ib.set_si_guid     = 0;
 215         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 216
 217         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 218                 ~props->clr_port_cap_mask;
 219
 220         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 221         if (err)
 222                 goto out;
 223 out:
 224         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 225         return err;
 226 }
 227
 228 static int mthca_query_pkey(struct ib_device *ibdev,
 229                             u8 port, u16 index, u16 *pkey)
 230 {
 231         struct ib_smp *in_mad  = NULL;
 232         struct ib_smp *out_mad = NULL;
 233         int err = -ENOMEM;
 234
 235         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 236         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 237         if (!in_mad || !out_mad)
 238                 goto out;
 239
 240         init_query_mad(in_mad);
 241         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 242         in_mad->attr_mod = cpu_to_be32(index / 32);
 243
 244         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 245                             port, NULL, NULL, in_mad, out_mad);
 246         if (err)
 247                 goto out;
 248
 249         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 250
 251  out:
 252         kfree(in_mad);
 253         kfree(out_mad);
 254         return err;
 255 }
 256
 257 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 258                            int index, union ib_gid *gid)
 259 {
 260         struct ib_smp *in_mad  = NULL;
 261         struct ib_smp *out_mad = NULL;
 262         int err = -ENOMEM;
 263
 264         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 265         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 266         if (!in_mad || !out_mad)
 267                 goto out;
 268
 269         init_query_mad(in_mad);
 270         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 271         in_mad->attr_mod = cpu_to_be32(port);
 272
 273         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 274                             port, NULL, NULL, in_mad, out_mad);
 275         if (err)
 276                 goto out;
 277
 278         memcpy(gid->raw, out_mad->data + 8, 8);
 279
 280         init_query_mad(in_mad);
 281         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 282         in_mad->attr_mod = cpu_to_be32(index / 8);
 283
 284         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 285                             port, NULL, NULL, in_mad, out_mad);
 286         if (err)
 287                 goto out;
 288
 289         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 290
 291  out:
 292         kfree(in_mad);
 293         kfree(out_mad);
 294         return err;
 295 }
 296
 297 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 298                                                 struct ib_udata *udata)
 299 {
 300         struct mthca_alloc_ucontext_resp uresp;
 301         struct mthca_ucontext           *context;
 302         int                              err;
 303
 304         if (!(to_mdev(ibdev)->active))
 305                 return ERR_PTR(-EAGAIN);
 306
 307         memset(&uresp, 0, sizeof uresp);
 308
 309         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 310         if (mthca_is_memfree(to_mdev(ibdev)))
 311                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 312         else
 313                 uresp.uarc_size = 0;
 314
 315         context = kmalloc(sizeof *context, GFP_KERNEL);
 316         if (!context)
 317                 return ERR_PTR(-ENOMEM);
 318
 319         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 320         if (err) {
 321                 kfree(context);
 322                 return ERR_PTR(err);
 323         }
 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                 kfree(context);
 330                 return ERR_PTR(err);
 331         }
 332
 333         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 334                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 335                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 336                 kfree(context);
 337                 return ERR_PTR(-EFAULT);
 338         }
 339
 340         context->reg_mr_warned = 0;
 341
 342         return &context->ibucontext;
 343 }
 344
 345 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 346 {
 347         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 348                                   to_mucontext(context)->db_tab);
 349         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 350         kfree(to_mucontext(context));
 351
 352         return 0;
 353 }
 354
 355 static int mthca_mmap_uar(struct ib_ucontext *context,
 356                           struct vm_area_struct *vma)
 357 {
 358         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 359                 return -EINVAL;
 360
 361         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 362
 363         if (io_remap_pfn_range(vma, vma->vm_start,
 364                                to_mucontext(context)->uar.pfn,
 365                                PAGE_SIZE, vma->vm_page_prot))
 366                 return -EAGAIN;
 367
 368         return 0;
 369 }
 370
 371 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 372                                     struct ib_ucontext *context,
 373                                     struct ib_udata *udata)
 374 {
 375         struct mthca_pd *pd;
 376         int err;
 377
 378         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 379         if (!pd)
 380                 return ERR_PTR(-ENOMEM);
 381
 382         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 383         if (err) {
 384                 kfree(pd);
 385                 return ERR_PTR(err);
 386         }
 387
 388         if (context) {
 389                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 390                         mthca_pd_free(to_mdev(ibdev), pd);
 391                         kfree(pd);
 392                         return ERR_PTR(-EFAULT);
 393                 }
 394         }
 395
 396         return &pd->ibpd;
 397 }
 398
 399 static int mthca_dealloc_pd(struct ib_pd *pd)
 400 {
 401         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 402         kfree(pd);
 403
 404         return 0;
 405 }
 406
 407 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 408                                      struct ib_ah_attr *ah_attr)
 409 {
 410         int err;
 411         struct mthca_ah *ah;
 412
 413         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 414         if (!ah)
 415                 return ERR_PTR(-ENOMEM);
 416
 417         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 418         if (err) {
 419                 kfree(ah);
 420                 return ERR_PTR(err);
 421         }
 422
 423         return &ah->ibah;
 424 }
 425
 426 static int mthca_ah_destroy(struct ib_ah *ah)
 427 {
 428         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 429         kfree(ah);
 430
 431         return 0;
 432 }
 433
 434 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 435                                        struct ib_srq_init_attr *init_attr,
 436                                        struct ib_udata *udata)
 437 {
 438         struct mthca_create_srq ucmd;
 439         struct mthca_ucontext *context = NULL;
 440         struct mthca_srq *srq;
 441         int err;
 442
 443         if (init_attr->srq_type != IB_SRQT_BASIC)
 444                 return ERR_PTR(-ENOSYS);
 445
 446         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 447         if (!srq)
 448                 return ERR_PTR(-ENOMEM);
 449
 450         if (pd->uobject) {
 451                 context = to_mucontext(pd->uobject->context);
 452
 453                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 454                         err = -EFAULT;
 455                         goto err_free;
 456                 }
 457
 458                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 459                                         context->db_tab, ucmd.db_index,
 460                                         ucmd.db_page);
 461
 462                 if (err)
 463                         goto err_free;
 464
 465                 srq->mr.ibmr.lkey = ucmd.lkey;
 466                 srq->db_index     = ucmd.db_index;
 467         }
 468
 469         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 470                               &init_attr->attr, srq);
 471
 472         if (err && pd->uobject)
 473                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 474                                     context->db_tab, ucmd.db_index);
 475
 476         if (err)
 477                 goto err_free;
 478
 479         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 480                 mthca_free_srq(to_mdev(pd->device), srq);
 481                 err = -EFAULT;
 482                 goto err_free;
 483         }
 484
 485         return &srq->ibsrq;
 486
 487 err_free:
 488         kfree(srq);
 489
 490         return ERR_PTR(err);
 491 }
 492
 493 static int mthca_destroy_srq(struct ib_srq *srq)
 494 {
 495         struct mthca_ucontext *context;
 496
 497         if (srq->uobject) {
 498                 context = to_mucontext(srq->uobject->context);
 499
 500                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 501                                     context->db_tab, to_msrq(srq)->db_index);
 502         }
 503
 504         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 505         kfree(srq);
 506
 507         return 0;
 508 }
 509
 510 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 511                                      struct ib_qp_init_attr *init_attr,
 512                                      struct ib_udata *udata)
 513 {
 514         struct mthca_create_qp ucmd;
 515         struct mthca_qp *qp;
 516         int err;
 517
 518         if (init_attr->create_flags)
 519                 return ERR_PTR(-EINVAL);
 520
 521         switch (init_attr->qp_type) {
 522         case IB_QPT_RC:
 523         case IB_QPT_UC:
 524         case IB_QPT_UD:
 525         {
 526                 struct mthca_ucontext *context;
 527
 528                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 529                 if (!qp)
 530                         return ERR_PTR(-ENOMEM);
 531
 532                 if (pd->uobject) {
 533                         context = to_mucontext(pd->uobject->context);
 534
 535                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 536                                 kfree(qp);
 537                                 return ERR_PTR(-EFAULT);
 538                         }
 539
 540                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 541                                                 context->db_tab,
 542                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 543                         if (err) {
 544                                 kfree(qp);
 545                                 return ERR_PTR(err);
 546                         }
 547
 548                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 549                                                 context->db_tab,
 550                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 551                         if (err) {
 552                                 mthca_unmap_user_db(to_mdev(pd->device),
 553                                                     &context->uar,
 554                                                     context->db_tab,
 555                                                     ucmd.sq_db_index);
 556                                 kfree(qp);
 557                                 return ERR_PTR(err);
 558                         }
 559
 560                         qp->mr.ibmr.lkey = ucmd.lkey;
 561                         qp->sq.db_index  = ucmd.sq_db_index;
 562                         qp->rq.db_index  = ucmd.rq_db_index;
 563                 }
 564
 565                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 566                                      to_mcq(init_attr->send_cq),
 567                                      to_mcq(init_attr->recv_cq),
 568                                      init_attr->qp_type, init_attr->sq_sig_type,
 569                                      &init_attr->cap, qp);
 570
 571                 if (err && pd->uobject) {
 572                         context = to_mucontext(pd->uobject->context);
 573
 574                         mthca_unmap_user_db(to_mdev(pd->device),
 575                                             &context->uar,
 576                                             context->db_tab,
 577                                             ucmd.sq_db_index);
 578                         mthca_unmap_user_db(to_mdev(pd->device),
 579                                             &context->uar,
 580                                             context->db_tab,
 581                                             ucmd.rq_db_index);
 582                 }
 583
 584                 qp->ibqp.qp_num = qp->qpn;
 585                 break;
 586         }
 587         case IB_QPT_SMI:
 588         case IB_QPT_GSI:
 589         {
 590                 /* Don't allow userspace to create special QPs */
 591                 if (pd->uobject)
 592                         return ERR_PTR(-EINVAL);
 593
 594                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 595                 if (!qp)
 596                         return ERR_PTR(-ENOMEM);
 597
 598                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 599
 600                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 601                                       to_mcq(init_attr->send_cq),
 602                                       to_mcq(init_attr->recv_cq),
 603                                       init_attr->sq_sig_type, &init_attr->cap,
 604                                       qp->ibqp.qp_num, init_attr->port_num,
 605                                       to_msqp(qp));
 606                 break;
 607         }
 608         default:
 609                 /* Don't support raw QPs */
 610                 return ERR_PTR(-ENOSYS);
 611         }
 612
 613         if (err) {
 614                 kfree(qp);
 615                 return ERR_PTR(err);
 616         }
 617
 618         init_attr->cap.max_send_wr     = qp->sq.max;
 619         init_attr->cap.max_recv_wr     = qp->rq.max;
 620         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 621         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 622         init_attr->cap.max_inline_data = qp->max_inline_data;
 623
 624         return &qp->ibqp;
 625 }
 626
 627 static int mthca_destroy_qp(struct ib_qp *qp)
 628 {
 629         if (qp->uobject) {
 630                 mthca_unmap_user_db(to_mdev(qp->device),
 631                                     &to_mucontext(qp->uobject->context)->uar,
 632                                     to_mucontext(qp->uobject->context)->db_tab,
 633                                     to_mqp(qp)->sq.db_index);
 634                 mthca_unmap_user_db(to_mdev(qp->device),
 635                                     &to_mucontext(qp->uobject->context)->uar,
 636                                     to_mucontext(qp->uobject->context)->db_tab,
 637                                     to_mqp(qp)->rq.db_index);
 638         }
 639         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 640         kfree(qp);
 641         return 0;
 642 }
 643
 644 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
 645                                      int comp_vector,
 646                                      struct ib_ucontext *context,
 647                                      struct ib_udata *udata)
 648 {
 649         struct mthca_create_cq ucmd;
 650         struct mthca_cq *cq;
 651         int nent;
 652         int err;
 653
 654         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 655                 return ERR_PTR(-EINVAL);
 656
 657         if (context) {
 658                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 659                         return ERR_PTR(-EFAULT);
 660
 661                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 662                                         to_mucontext(context)->db_tab,
 663                                         ucmd.set_db_index, ucmd.set_db_page);
 664                 if (err)
 665                         return ERR_PTR(err);
 666
 667                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 668                                         to_mucontext(context)->db_tab,
 669                                         ucmd.arm_db_index, ucmd.arm_db_page);
 670                 if (err)
 671                         goto err_unmap_set;
 672         }
 673
 674         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 675         if (!cq) {
 676                 err = -ENOMEM;
 677                 goto err_unmap_arm;
 678         }
 679
 680         if (context) {
 681                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 682                 cq->set_ci_db_index  = ucmd.set_db_index;
 683                 cq->arm_db_index     = ucmd.arm_db_index;
 684         }
 685
 686         for (nent = 1; nent <= entries; nent <<= 1)
 687                 ; /* nothing */
 688
 689         err = mthca_init_cq(to_mdev(ibdev), nent,
 690                             context ? to_mucontext(context) : NULL,
 691                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 692                             cq);
 693         if (err)
 694                 goto err_free;
 695
 696         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 697                 mthca_free_cq(to_mdev(ibdev), cq);
 698                 goto err_free;
 699         }
 700
 701         cq->resize_buf = NULL;
 702
 703         return &cq->ibcq;
 704
 705 err_free:
 706         kfree(cq);
 707
 708 err_unmap_arm:
 709         if (context)
 710                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 711                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 712
 713 err_unmap_set:
 714         if (context)
 715                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 716                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 717
 718         return ERR_PTR(err);
 719 }
 720
 721 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 722                                   int entries)
 723 {
 724         int ret;
 725
 726         spin_lock_irq(&cq->lock);
 727         if (cq->resize_buf) {
 728                 ret = -EBUSY;
 729                 goto unlock;
 730         }
 731
 732         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 733         if (!cq->resize_buf) {
 734                 ret = -ENOMEM;
 735                 goto unlock;
 736         }
 737
 738         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 739
 740         ret = 0;
 741
 742 unlock:
 743         spin_unlock_irq(&cq->lock);
 744
 745         if (ret)
 746                 return ret;
 747
 748         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 749         if (ret) {
 750                 spin_lock_irq(&cq->lock);
 751                 kfree(cq->resize_buf);
 752                 cq->resize_buf = NULL;
 753                 spin_unlock_irq(&cq->lock);
 754                 return ret;
 755         }
 756
 757         cq->resize_buf->cqe = entries - 1;
 758
 759         spin_lock_irq(&cq->lock);
 760         cq->resize_buf->state = CQ_RESIZE_READY;
 761         spin_unlock_irq(&cq->lock);
 762
 763         return 0;
 764 }
 765
 766 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 767 {
 768         struct mthca_dev *dev = to_mdev(ibcq->device);
 769         struct mthca_cq *cq = to_mcq(ibcq);
 770         struct mthca_resize_cq ucmd;
 771         u32 lkey;
 772         int ret;
 773
 774         if (entries < 1 || entries > dev->limits.max_cqes)
 775                 return -EINVAL;
 776
 777         mutex_lock(&cq->mutex);
 778
 779         entries = roundup_pow_of_two(entries + 1);
 780         if (entries == ibcq->cqe + 1) {
 781                 ret = 0;
 782                 goto out;
 783         }
 784
 785         if (cq->is_kernel) {
 786                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 787                 if (ret)
 788                         goto out;
 789                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 790         } else {
 791                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 792                         ret = -EFAULT;
 793                         goto out;
 794                 }
 795                 lkey = ucmd.lkey;
 796         }
 797
 798         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 799
 800         if (ret) {
 801                 if (cq->resize_buf) {
 802                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 803                                           cq->resize_buf->cqe);
 804                         kfree(cq->resize_buf);
 805                         spin_lock_irq(&cq->lock);
 806                         cq->resize_buf = NULL;
 807                         spin_unlock_irq(&cq->lock);
 808                 }
 809                 goto out;
 810         }
 811
 812         if (cq->is_kernel) {
 813                 struct mthca_cq_buf tbuf;
 814                 int tcqe;
 815
 816                 spin_lock_irq(&cq->lock);
 817                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 818                         mthca_cq_resize_copy_cqes(cq);
 819                         tbuf         = cq->buf;
 820                         tcqe         = cq->ibcq.cqe;
 821                         cq->buf      = cq->resize_buf->buf;
 822                         cq->ibcq.cqe = cq->resize_buf->cqe;
 823                 } else {
 824                         tbuf = cq->resize_buf->buf;
 825                         tcqe = cq->resize_buf->cqe;
 826                 }
 827
 828                 kfree(cq->resize_buf);
 829                 cq->resize_buf = NULL;
 830                 spin_unlock_irq(&cq->lock);
 831
 832                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 833         } else
 834                 ibcq->cqe = entries - 1;
 835
 836 out:
 837         mutex_unlock(&cq->mutex);
 838
 839         return ret;
 840 }
 841
 842 static int mthca_destroy_cq(struct ib_cq *cq)
 843 {
 844         if (cq->uobject) {
 845                 mthca_unmap_user_db(to_mdev(cq->device),
 846                                     &to_mucontext(cq->uobject->context)->uar,
 847                                     to_mucontext(cq->uobject->context)->db_tab,
 848                                     to_mcq(cq)->arm_db_index);
 849                 mthca_unmap_user_db(to_mdev(cq->device),
 850                                     &to_mucontext(cq->uobject->context)->uar,
 851                                     to_mucontext(cq->uobject->context)->db_tab,
 852                                     to_mcq(cq)->set_ci_db_index);
 853         }
 854         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 855         kfree(cq);
 856
 857         return 0;
 858 }
 859
 860 static inline u32 convert_access(int acc)
 861 {
 862         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 863                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 864                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 865                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 866                MTHCA_MPT_FLAG_LOCAL_READ;
 867 }
 868
 869 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 870 {
 871         struct mthca_mr *mr;
 872         int err;
 873
 874         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 875         if (!mr)
 876                 return ERR_PTR(-ENOMEM);
 877
 878         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 879                                      to_mpd(pd)->pd_num,
 880                                      convert_access(acc), mr);
 881
 882         if (err) {
 883                 kfree(mr);
 884                 return ERR_PTR(err);
 885         }
 886
 887         mr->umem = NULL;
 888
 889         return &mr->ibmr;
 890 }
 891
 892 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 893                                        struct ib_phys_buf *buffer_list,
 894                                        int                 num_phys_buf,
 895                                        int                 acc,
 896                                        u64                *iova_start)
 897 {
 898         struct mthca_mr *mr;
 899         u64 *page_list;
 900         u64 total_size;
 901         unsigned long mask;
 902         int shift;
 903         int npages;
 904         int err;
 905         int i, j, n;
 906
 907         mask = buffer_list[0].addr ^ *iova_start;
 908         total_size = 0;
 909         for (i = 0; i < num_phys_buf; ++i) {
 910                 if (i != 0)
 911                         mask |= buffer_list[i].addr;
 912                 if (i != num_phys_buf - 1)
 913                         mask |= buffer_list[i].addr + buffer_list[i].size;
 914
 915                 total_size += buffer_list[i].size;
 916         }
 917
 918         if (mask & ~PAGE_MASK)
 919                 return ERR_PTR(-EINVAL);
 920
 921         shift = __ffs(mask | 1 << 31);
 922
 923         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 924         buffer_list[0].addr &= ~0ull << shift;
 925
 926         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 927         if (!mr)
 928                 return ERR_PTR(-ENOMEM);
 929
 930         npages = 0;
 931         for (i = 0; i < num_phys_buf; ++i)
 932                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 933
 934         if (!npages)
 935                 return &mr->ibmr;
 936
 937         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 938         if (!page_list) {
 939                 kfree(mr);
 940                 return ERR_PTR(-ENOMEM);
 941         }
 942
 943         n = 0;
 944         for (i = 0; i < num_phys_buf; ++i)
 945                 for (j = 0;
 946                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 947                      ++j)
 948                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 949
 950         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 951                   "in PD %x; shift %d, npages %d.\n",
 952                   (unsigned long long) buffer_list[0].addr,
 953                   (unsigned long long) *iova_start,
 954                   to_mpd(pd)->pd_num,
 955                   shift, npages);
 956
 957         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 958                                   to_mpd(pd)->pd_num,
 959                                   page_list, shift, npages,
 960                                   *iova_start, total_size,
 961                                   convert_access(acc), mr);
 962
 963         if (err) {
 964                 kfree(page_list);
 965                 kfree(mr);
 966                 return ERR_PTR(err);
 967         }
 968
 969         kfree(page_list);
 970         mr->umem = NULL;
 971
 972         return &mr->ibmr;
 973 }
 974
 975 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 976                                        u64 virt, int acc, struct ib_udata *udata)
 977 {
 978         struct mthca_dev *dev = to_mdev(pd->device);
 979         struct ib_umem_chunk *chunk;
 980         struct mthca_mr *mr;
 981         struct mthca_reg_mr ucmd;
 982         u64 *pages;
 983         int shift, n, len;
 984         int i, j, k;
 985         int err = 0;
 986         int write_mtt_size;
 987
 988         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
 989                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
 990                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 991                                    current->comm);
 992                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 993                 }
 994                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
 995                 ucmd.mr_attrs = 0;
 996         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 997                 return ERR_PTR(-EFAULT);
 998
 999         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1000         if (!mr)
1001                 return ERR_PTR(-ENOMEM);
1002
1003         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1004                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1005
1006         if (IS_ERR(mr->umem)) {
1007                 err = PTR_ERR(mr->umem);
1008                 goto err;
1009         }
1010
1011         shift = ffs(mr->umem->page_size) - 1;
1012
1013         n = 0;
1014         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1015                 n += chunk->nents;
1016
1017         mr->mtt = mthca_alloc_mtt(dev, n);
1018         if (IS_ERR(mr->mtt)) {
1019                 err = PTR_ERR(mr->mtt);
1020                 goto err_umem;
1021         }
1022
1023         pages = (u64 *) __get_free_page(GFP_KERNEL);
1024         if (!pages) {
1025                 err = -ENOMEM;
1026                 goto err_mtt;
1027         }
1028
1029         i = n = 0;
1030
1031         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1032
1033         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1034                 for (j = 0; j < chunk->nmap; ++j) {
1035                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1036                         for (k = 0; k < len; ++k) {
1037                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1038                                         mr->umem->page_size * k;
1039                                 /*
1040                                  * Be friendly to write_mtt and pass it chunks
1041                                  * of appropriate size.
1042                                  */
1043                                 if (i == write_mtt_size) {
1044                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1045                                         if (err)
1046                                                 goto mtt_done;
1047                                         n += i;
1048                                         i = 0;
1049                                 }
1050                         }
1051                 }
1052
1053         if (i)
1054                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1055 mtt_done:
1056         free_page((unsigned long) pages);
1057         if (err)
1058                 goto err_mtt;
1059
1060         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1061                              convert_access(acc), mr);
1062
1063         if (err)
1064                 goto err_mtt;
1065
1066         return &mr->ibmr;
1067
1068 err_mtt:
1069         mthca_free_mtt(dev, mr->mtt);
1070
1071 err_umem:
1072         ib_umem_release(mr->umem);
1073
1074 err:
1075         kfree(mr);
1076         return ERR_PTR(err);
1077 }
1078
1079 static int mthca_dereg_mr(struct ib_mr *mr)
1080 {
1081         struct mthca_mr *mmr = to_mmr(mr);
1082
1083         mthca_free_mr(to_mdev(mr->device), mmr);
1084         if (mmr->umem)
1085                 ib_umem_release(mmr->umem);
1086         kfree(mmr);
1087
1088         return 0;
1089 }
1090
1091 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1092                                       struct ib_fmr_attr *fmr_attr)
1093 {
1094         struct mthca_fmr *fmr;
1095         int err;
1096
1097         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1098         if (!fmr)
1099                 return ERR_PTR(-ENOMEM);
1100
1101         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1102         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1103                              convert_access(mr_access_flags), fmr);
1104
1105         if (err) {
1106                 kfree(fmr);
1107                 return ERR_PTR(err);
1108         }
1109
1110         return &fmr->ibmr;
1111 }
1112
1113 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1114 {
1115         struct mthca_fmr *mfmr = to_mfmr(fmr);
1116         int err;
1117
1118         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1119         if (err)
1120                 return err;
1121
1122         kfree(mfmr);
1123         return 0;
1124 }
1125
1126 static int mthca_unmap_fmr(struct list_head *fmr_list)
1127 {
1128         struct ib_fmr *fmr;
1129         int err;
1130         struct mthca_dev *mdev = NULL;
1131
1132         list_for_each_entry(fmr, fmr_list, list) {
1133                 if (mdev && to_mdev(fmr->device) != mdev)
1134                         return -EINVAL;
1135                 mdev = to_mdev(fmr->device);
1136         }
1137
1138         if (!mdev)
1139                 return 0;
1140
1141         if (mthca_is_memfree(mdev)) {
1142                 list_for_each_entry(fmr, fmr_list, list)
1143                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1144
1145                 wmb();
1146         } else
1147                 list_for_each_entry(fmr, fmr_list, list)
1148                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1149
1150         err = mthca_SYNC_TPT(mdev);
1151         return err;
1152 }
1153
1154 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1155                         char *buf)
1156 {
1157         struct mthca_dev *dev =
1158                 container_of(device, struct mthca_dev, ib_dev.dev);
1159         return sprintf(buf, "%x\n", dev->rev_id);
1160 }
1161
1162 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1163                            char *buf)
1164 {
1165         struct mthca_dev *dev =
1166                 container_of(device, struct mthca_dev, ib_dev.dev);
1167         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1168                        (int) (dev->fw_ver >> 16) & 0xffff,
1169                        (int) dev->fw_ver & 0xffff);
1170 }
1171
1172 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1173                         char *buf)
1174 {
1175         struct mthca_dev *dev =
1176                 container_of(device, struct mthca_dev, ib_dev.dev);
1177         switch (dev->pdev->device) {
1178         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1179                 return sprintf(buf, "MT23108\n");
1180         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1181                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1182         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1183                 return sprintf(buf, "MT25208\n");
1184         case PCI_DEVICE_ID_MELLANOX_SINAI:
1185         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1186                 return sprintf(buf, "MT25204\n");
1187         default:
1188                 return sprintf(buf, "unknown\n");
1189         }
1190 }
1191
1192 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1193                           char *buf)
1194 {
1195         struct mthca_dev *dev =
1196                 container_of(device, struct mthca_dev, ib_dev.dev);
1197         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1198 }
1199
1200 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1201 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1202 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1203 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1204
1205 static struct device_attribute *mthca_dev_attributes[] = {
1206         &dev_attr_hw_rev,
1207         &dev_attr_fw_ver,
1208         &dev_attr_hca_type,
1209         &dev_attr_board_id
1210 };
1211
1212 static int mthca_init_node_data(struct mthca_dev *dev)
1213 {
1214         struct ib_smp *in_mad  = NULL;
1215         struct ib_smp *out_mad = NULL;
1216         int err = -ENOMEM;
1217
1218         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1219         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1220         if (!in_mad || !out_mad)
1221                 goto out;
1222
1223         init_query_mad(in_mad);
1224         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1225
1226         err = mthca_MAD_IFC(dev, 1, 1,
1227                             1, NULL, NULL, in_mad, out_mad);
1228         if (err)
1229                 goto out;
1230
1231         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1232
1233         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1234
1235         err = mthca_MAD_IFC(dev, 1, 1,
1236                             1, NULL, NULL, in_mad, out_mad);
1237         if (err)
1238                 goto out;
1239
1240         if (mthca_is_memfree(dev))
1241                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1242         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1243
1244 out:
1245         kfree(in_mad);
1246         kfree(out_mad);
1247         return err;
1248 }
1249
1250 int mthca_register_device(struct mthca_dev *dev)
1251 {
1252         int ret;
1253         int i;
1254
1255         ret = mthca_init_node_data(dev);
1256         if (ret)
1257                 return ret;
1258
1259         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1260         dev->ib_dev.owner                = THIS_MODULE;
1261
1262         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1263         dev->ib_dev.uverbs_cmd_mask      =
1264                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1265                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1266                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1267                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1268                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1269                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1270                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1271                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1272                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1273                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1274                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1275                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1276                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1277                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1278                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1279                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1280                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1281         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1282         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1283         dev->ib_dev.num_comp_vectors     = 1;
1284         dev->ib_dev.dma_device           = &dev->pdev->dev;
1285         dev->ib_dev.query_device         = mthca_query_device;
1286         dev->ib_dev.query_port           = mthca_query_port;
1287         dev->ib_dev.modify_device        = mthca_modify_device;
1288         dev->ib_dev.modify_port          = mthca_modify_port;
1289         dev->ib_dev.query_pkey           = mthca_query_pkey;
1290         dev->ib_dev.query_gid            = mthca_query_gid;
1291         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1292         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1293         dev->ib_dev.mmap                 = mthca_mmap_uar;
1294         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1295         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1296         dev->ib_dev.create_ah            = mthca_ah_create;
1297         dev->ib_dev.query_ah             = mthca_ah_query;
1298         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1299
1300         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1301                 dev->ib_dev.create_srq           = mthca_create_srq;
1302                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1303                 dev->ib_dev.query_srq            = mthca_query_srq;
1304                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1305                 dev->ib_dev.uverbs_cmd_mask     |=
1306                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1307                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1308                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1309                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1310
1311                 if (mthca_is_memfree(dev))
1312                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1313                 else
1314                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1315         }
1316
1317         dev->ib_dev.create_qp            = mthca_create_qp;
1318         dev->ib_dev.modify_qp            = mthca_modify_qp;
1319         dev->ib_dev.query_qp             = mthca_query_qp;
1320         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1321         dev->ib_dev.create_cq            = mthca_create_cq;
1322         dev->ib_dev.resize_cq            = mthca_resize_cq;
1323         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1324         dev->ib_dev.poll_cq              = mthca_poll_cq;
1325         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1326         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1327         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1328         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1329
1330         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1331                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1332                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1333                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1334                 if (mthca_is_memfree(dev))
1335                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1336                 else
1337                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1338         }
1339
1340         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1341         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1342         dev->ib_dev.process_mad          = mthca_process_mad;
1343
1344         if (mthca_is_memfree(dev)) {
1345                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1346                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1347                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1348         } else {
1349                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1350                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1351                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1352         }
1353
1354         mutex_init(&dev->cap_mask_mutex);
1355
1356         ret = ib_register_device(&dev->ib_dev, NULL);
1357         if (ret)
1358                 return ret;
1359
1360         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1361                 ret = device_create_file(&dev->ib_dev.dev,
1362                                          mthca_dev_attributes[i]);
1363                 if (ret) {
1364                         ib_unregister_device(&dev->ib_dev);
1365                         return ret;
1366                 }
1367         }
1368
1369         mthca_start_catas_poll(dev);
1370
1371         return 0;
1372 }
1373
1374 void mthca_unregister_device(struct mthca_dev *dev)
1375 {
1376         mthca_stop_catas_poll(dev);
1377         ib_unregister_device(&dev->ib_dev);
1378 }