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/mm.h>
  44
  45 #include "mthca_dev.h"
  46 #include "mthca_cmd.h"
  47 #include "mthca_user.h"
  48 #include "mthca_memfree.h"
  49
  50 static void init_query_mad(struct ib_smp *mad)
  51 {
  52         mad->base_version  = 1;
  53         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  54         mad->class_version = 1;
  55         mad->method        = IB_MGMT_METHOD_GET;
  56 }
  57
  58 static int mthca_query_device(struct ib_device *ibdev,
  59                               struct ib_device_attr *props)
  60 {
  61         struct ib_smp *in_mad  = NULL;
  62         struct ib_smp *out_mad = NULL;
  63         int err = -ENOMEM;
  64         struct mthca_dev *mdev = to_mdev(ibdev);
  65
  66         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  67         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  68         if (!in_mad || !out_mad)
  69                 goto out;
  70
  71         memset(props, 0, sizeof *props);
  72
  73         props->fw_ver              = mdev->fw_ver;
  74
  75         init_query_mad(in_mad);
  76         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  77
  78         err = mthca_MAD_IFC(mdev, 1, 1,
  79                             1, NULL, NULL, in_mad, out_mad);
  80         if (err)
  81                 goto out;
  82
  83         props->device_cap_flags    = mdev->device_cap_flags;
  84         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  85                 0xffffff;
  86         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  87         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  88         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  89
  90         props->max_mr_size         = ~0ull;
  91         props->page_size_cap       = mdev->limits.page_size_cap;
  92         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  93         props->max_qp_wr           = mdev->limits.max_wqes;
  94         props->max_sge             = mdev->limits.max_sg;
  95         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
  96         props->max_cqe             = mdev->limits.max_cqes;
  97         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
  98         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
  99         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 100         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 101         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 102         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 103         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 104         props->max_srq_sge         = mdev->limits.max_srq_sge;
 105         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 106         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 107                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 108         props->max_pkeys           = mdev->limits.pkey_table_len;
 109         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 110         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 111         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 112                                            props->max_mcast_grp;
 113         /*
 114          * If Sinai memory key optimization is being used, then only
 115          * the 8-bit key portion will change.  For other HCAs, the
 116          * unused index bits will also be used for FMR remapping.
 117          */
 118         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 119                 props->max_map_per_fmr = 255;
 120         else
 121                 props->max_map_per_fmr =
 122                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 123
 124         err = 0;
 125  out:
 126         kfree(in_mad);
 127         kfree(out_mad);
 128         return err;
 129 }
 130
 131 static int mthca_query_port(struct ib_device *ibdev,
 132                             u8 port, struct ib_port_attr *props)
 133 {
 134         struct ib_smp *in_mad  = NULL;
 135         struct ib_smp *out_mad = NULL;
 136         int err = -ENOMEM;
 137
 138         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 139         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 140         if (!in_mad || !out_mad)
 141                 goto out;
 142
 143         memset(props, 0, sizeof *props);
 144
 145         init_query_mad(in_mad);
 146         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 147         in_mad->attr_mod = cpu_to_be32(port);
 148
 149         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 150                             port, NULL, NULL, in_mad, out_mad);
 151         if (err)
 152                 goto out;
 153
 154         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 155         props->lmc               = out_mad->data[34] & 0x7;
 156         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 157         props->sm_sl             = out_mad->data[36] & 0xf;
 158         props->state             = out_mad->data[32] & 0xf;
 159         props->phys_state        = out_mad->data[33] >> 4;
 160         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 161         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 162         props->max_msg_sz        = 0x80000000;
 163         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 164         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 165         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 166         props->active_width      = out_mad->data[31] & 0xf;
 167         props->active_speed      = out_mad->data[35] >> 4;
 168         props->max_mtu           = out_mad->data[41] & 0xf;
 169         props->active_mtu        = out_mad->data[36] >> 4;
 170         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 171         props->max_vl_num        = out_mad->data[37] >> 4;
 172         props->init_type_reply   = out_mad->data[41] >> 4;
 173
 174  out:
 175         kfree(in_mad);
 176         kfree(out_mad);
 177         return err;
 178 }
 179
 180 static int mthca_modify_device(struct ib_device *ibdev,
 181                                int mask,
 182                                struct ib_device_modify *props)
 183 {
 184         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 185                 return -EOPNOTSUPP;
 186
 187         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 188                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 189                         return -ERESTARTSYS;
 190                 memcpy(ibdev->node_desc, props->node_desc, 64);
 191                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 192         }
 193
 194         return 0;
 195 }
 196
 197 static int mthca_modify_port(struct ib_device *ibdev,
 198                              u8 port, int port_modify_mask,
 199                              struct ib_port_modify *props)
 200 {
 201         struct mthca_set_ib_param set_ib;
 202         struct ib_port_attr attr;
 203         int err;
 204
 205         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 206                 return -ERESTARTSYS;
 207
 208         err = mthca_query_port(ibdev, port, &attr);
 209         if (err)
 210                 goto out;
 211
 212         set_ib.set_si_guid     = 0;
 213         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 214
 215         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 216                 ~props->clr_port_cap_mask;
 217
 218         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 219         if (err)
 220                 goto out;
 221 out:
 222         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 223         return err;
 224 }
 225
 226 static int mthca_query_pkey(struct ib_device *ibdev,
 227                             u8 port, u16 index, u16 *pkey)
 228 {
 229         struct ib_smp *in_mad  = NULL;
 230         struct ib_smp *out_mad = NULL;
 231         int err = -ENOMEM;
 232
 233         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 234         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 235         if (!in_mad || !out_mad)
 236                 goto out;
 237
 238         init_query_mad(in_mad);
 239         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 240         in_mad->attr_mod = cpu_to_be32(index / 32);
 241
 242         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 243                             port, NULL, NULL, in_mad, out_mad);
 244         if (err)
 245                 goto out;
 246
 247         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 248
 249  out:
 250         kfree(in_mad);
 251         kfree(out_mad);
 252         return err;
 253 }
 254
 255 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 256                            int index, union ib_gid *gid)
 257 {
 258         struct ib_smp *in_mad  = NULL;
 259         struct ib_smp *out_mad = NULL;
 260         int err = -ENOMEM;
 261
 262         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 263         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 264         if (!in_mad || !out_mad)
 265                 goto out;
 266
 267         init_query_mad(in_mad);
 268         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 269         in_mad->attr_mod = cpu_to_be32(port);
 270
 271         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 272                             port, NULL, NULL, in_mad, out_mad);
 273         if (err)
 274                 goto out;
 275
 276         memcpy(gid->raw, out_mad->data + 8, 8);
 277
 278         init_query_mad(in_mad);
 279         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 280         in_mad->attr_mod = cpu_to_be32(index / 8);
 281
 282         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 283                             port, NULL, NULL, in_mad, out_mad);
 284         if (err)
 285                 goto out;
 286
 287         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 288
 289  out:
 290         kfree(in_mad);
 291         kfree(out_mad);
 292         return err;
 293 }
 294
 295 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 296                                                 struct ib_udata *udata)
 297 {
 298         struct mthca_alloc_ucontext_resp uresp;
 299         struct mthca_ucontext           *context;
 300         int                              err;
 301
 302         if (!(to_mdev(ibdev)->active))
 303                 return ERR_PTR(-EAGAIN);
 304
 305         memset(&uresp, 0, sizeof uresp);
 306
 307         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 308         if (mthca_is_memfree(to_mdev(ibdev)))
 309                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 310         else
 311                 uresp.uarc_size = 0;
 312
 313         context = kmalloc(sizeof *context, GFP_KERNEL);
 314         if (!context)
 315                 return ERR_PTR(-ENOMEM);
 316
 317         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 318         if (err) {
 319                 kfree(context);
 320                 return ERR_PTR(err);
 321         }
 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                 kfree(context);
 328                 return ERR_PTR(err);
 329         }
 330
 331         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 332                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 333                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 334                 kfree(context);
 335                 return ERR_PTR(-EFAULT);
 336         }
 337
 338         context->reg_mr_warned = 0;
 339
 340         return &context->ibucontext;
 341 }
 342
 343 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 344 {
 345         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 346                                   to_mucontext(context)->db_tab);
 347         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 348         kfree(to_mucontext(context));
 349
 350         return 0;
 351 }
 352
 353 static int mthca_mmap_uar(struct ib_ucontext *context,
 354                           struct vm_area_struct *vma)
 355 {
 356         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 357                 return -EINVAL;
 358
 359         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 360
 361         if (io_remap_pfn_range(vma, vma->vm_start,
 362                                to_mucontext(context)->uar.pfn,
 363                                PAGE_SIZE, vma->vm_page_prot))
 364                 return -EAGAIN;
 365
 366         return 0;
 367 }
 368
 369 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 370                                     struct ib_ucontext *context,
 371                                     struct ib_udata *udata)
 372 {
 373         struct mthca_pd *pd;
 374         int err;
 375
 376         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 377         if (!pd)
 378                 return ERR_PTR(-ENOMEM);
 379
 380         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 381         if (err) {
 382                 kfree(pd);
 383                 return ERR_PTR(err);
 384         }
 385
 386         if (context) {
 387                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 388                         mthca_pd_free(to_mdev(ibdev), pd);
 389                         kfree(pd);
 390                         return ERR_PTR(-EFAULT);
 391                 }
 392         }
 393
 394         return &pd->ibpd;
 395 }
 396
 397 static int mthca_dealloc_pd(struct ib_pd *pd)
 398 {
 399         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 400         kfree(pd);
 401
 402         return 0;
 403 }
 404
 405 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 406                                      struct ib_ah_attr *ah_attr)
 407 {
 408         int err;
 409         struct mthca_ah *ah;
 410
 411         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 412         if (!ah)
 413                 return ERR_PTR(-ENOMEM);
 414
 415         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 416         if (err) {
 417                 kfree(ah);
 418                 return ERR_PTR(err);
 419         }
 420
 421         return &ah->ibah;
 422 }
 423
 424 static int mthca_ah_destroy(struct ib_ah *ah)
 425 {
 426         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 427         kfree(ah);
 428
 429         return 0;
 430 }
 431
 432 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 433                                        struct ib_srq_init_attr *init_attr,
 434                                        struct ib_udata *udata)
 435 {
 436         struct mthca_create_srq ucmd;
 437         struct mthca_ucontext *context = NULL;
 438         struct mthca_srq *srq;
 439         int err;
 440
 441         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 442         if (!srq)
 443                 return ERR_PTR(-ENOMEM);
 444
 445         if (pd->uobject) {
 446                 context = to_mucontext(pd->uobject->context);
 447
 448                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 449                         err = -EFAULT;
 450                         goto err_free;
 451                 }
 452
 453                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 454                                         context->db_tab, ucmd.db_index,
 455                                         ucmd.db_page);
 456
 457                 if (err)
 458                         goto err_free;
 459
 460                 srq->mr.ibmr.lkey = ucmd.lkey;
 461                 srq->db_index     = ucmd.db_index;
 462         }
 463
 464         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 465                               &init_attr->attr, srq);
 466
 467         if (err && pd->uobject)
 468                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 469                                     context->db_tab, ucmd.db_index);
 470
 471         if (err)
 472                 goto err_free;
 473
 474         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 475                 mthca_free_srq(to_mdev(pd->device), srq);
 476                 err = -EFAULT;
 477                 goto err_free;
 478         }
 479
 480         return &srq->ibsrq;
 481
 482 err_free:
 483         kfree(srq);
 484
 485         return ERR_PTR(err);
 486 }
 487
 488 static int mthca_destroy_srq(struct ib_srq *srq)
 489 {
 490         struct mthca_ucontext *context;
 491
 492         if (srq->uobject) {
 493                 context = to_mucontext(srq->uobject->context);
 494
 495                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 496                                     context->db_tab, to_msrq(srq)->db_index);
 497         }
 498
 499         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 500         kfree(srq);
 501
 502         return 0;
 503 }
 504
 505 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 506                                      struct ib_qp_init_attr *init_attr,
 507                                      struct ib_udata *udata)
 508 {
 509         struct mthca_create_qp ucmd;
 510         struct mthca_qp *qp;
 511         int err;
 512
 513         if (init_attr->create_flags)
 514                 return ERR_PTR(-EINVAL);
 515
 516         switch (init_attr->qp_type) {
 517         case IB_QPT_RC:
 518         case IB_QPT_UC:
 519         case IB_QPT_UD:
 520         {
 521                 struct mthca_ucontext *context;
 522
 523                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 524                 if (!qp)
 525                         return ERR_PTR(-ENOMEM);
 526
 527                 if (pd->uobject) {
 528                         context = to_mucontext(pd->uobject->context);
 529
 530                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 531                                 kfree(qp);
 532                                 return ERR_PTR(-EFAULT);
 533                         }
 534
 535                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 536                                                 context->db_tab,
 537                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 538                         if (err) {
 539                                 kfree(qp);
 540                                 return ERR_PTR(err);
 541                         }
 542
 543                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 544                                                 context->db_tab,
 545                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 546                         if (err) {
 547                                 mthca_unmap_user_db(to_mdev(pd->device),
 548                                                     &context->uar,
 549                                                     context->db_tab,
 550                                                     ucmd.sq_db_index);
 551                                 kfree(qp);
 552                                 return ERR_PTR(err);
 553                         }
 554
 555                         qp->mr.ibmr.lkey = ucmd.lkey;
 556                         qp->sq.db_index  = ucmd.sq_db_index;
 557                         qp->rq.db_index  = ucmd.rq_db_index;
 558                 }
 559
 560                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 561                                      to_mcq(init_attr->send_cq),
 562                                      to_mcq(init_attr->recv_cq),
 563                                      init_attr->qp_type, init_attr->sq_sig_type,
 564                                      &init_attr->cap, qp);
 565
 566                 if (err && pd->uobject) {
 567                         context = to_mucontext(pd->uobject->context);
 568
 569                         mthca_unmap_user_db(to_mdev(pd->device),
 570                                             &context->uar,
 571                                             context->db_tab,
 572                                             ucmd.sq_db_index);
 573                         mthca_unmap_user_db(to_mdev(pd->device),
 574                                             &context->uar,
 575                                             context->db_tab,
 576                                             ucmd.rq_db_index);
 577                 }
 578
 579                 qp->ibqp.qp_num = qp->qpn;
 580                 break;
 581         }
 582         case IB_QPT_SMI:
 583         case IB_QPT_GSI:
 584         {
 585                 /* Don't allow userspace to create special QPs */
 586                 if (pd->uobject)
 587                         return ERR_PTR(-EINVAL);
 588
 589                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 590                 if (!qp)
 591                         return ERR_PTR(-ENOMEM);
 592
 593                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 594
 595                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 596                                       to_mcq(init_attr->send_cq),
 597                                       to_mcq(init_attr->recv_cq),
 598                                       init_attr->sq_sig_type, &init_attr->cap,
 599                                       qp->ibqp.qp_num, init_attr->port_num,
 600                                       to_msqp(qp));
 601                 break;
 602         }
 603         default:
 604                 /* Don't support raw QPs */
 605                 return ERR_PTR(-ENOSYS);
 606         }
 607
 608         if (err) {
 609                 kfree(qp);
 610                 return ERR_PTR(err);
 611         }
 612
 613         init_attr->cap.max_send_wr     = qp->sq.max;
 614         init_attr->cap.max_recv_wr     = qp->rq.max;
 615         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 616         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 617         init_attr->cap.max_inline_data = qp->max_inline_data;
 618
 619         return &qp->ibqp;
 620 }
 621
 622 static int mthca_destroy_qp(struct ib_qp *qp)
 623 {
 624         if (qp->uobject) {
 625                 mthca_unmap_user_db(to_mdev(qp->device),
 626                                     &to_mucontext(qp->uobject->context)->uar,
 627                                     to_mucontext(qp->uobject->context)->db_tab,
 628                                     to_mqp(qp)->sq.db_index);
 629                 mthca_unmap_user_db(to_mdev(qp->device),
 630                                     &to_mucontext(qp->uobject->context)->uar,
 631                                     to_mucontext(qp->uobject->context)->db_tab,
 632                                     to_mqp(qp)->rq.db_index);
 633         }
 634         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 635         kfree(qp);
 636         return 0;
 637 }
 638
 639 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
 640                                      int comp_vector,
 641                                      struct ib_ucontext *context,
 642                                      struct ib_udata *udata)
 643 {
 644         struct mthca_create_cq ucmd;
 645         struct mthca_cq *cq;
 646         int nent;
 647         int err;
 648
 649         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 650                 return ERR_PTR(-EINVAL);
 651
 652         if (context) {
 653                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 654                         return ERR_PTR(-EFAULT);
 655
 656                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 657                                         to_mucontext(context)->db_tab,
 658                                         ucmd.set_db_index, ucmd.set_db_page);
 659                 if (err)
 660                         return ERR_PTR(err);
 661
 662                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 663                                         to_mucontext(context)->db_tab,
 664                                         ucmd.arm_db_index, ucmd.arm_db_page);
 665                 if (err)
 666                         goto err_unmap_set;
 667         }
 668
 669         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 670         if (!cq) {
 671                 err = -ENOMEM;
 672                 goto err_unmap_arm;
 673         }
 674
 675         if (context) {
 676                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 677                 cq->set_ci_db_index  = ucmd.set_db_index;
 678                 cq->arm_db_index     = ucmd.arm_db_index;
 679         }
 680
 681         for (nent = 1; nent <= entries; nent <<= 1)
 682                 ; /* nothing */
 683
 684         err = mthca_init_cq(to_mdev(ibdev), nent,
 685                             context ? to_mucontext(context) : NULL,
 686                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 687                             cq);
 688         if (err)
 689                 goto err_free;
 690
 691         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 692                 mthca_free_cq(to_mdev(ibdev), cq);
 693                 goto err_free;
 694         }
 695
 696         cq->resize_buf = NULL;
 697
 698         return &cq->ibcq;
 699
 700 err_free:
 701         kfree(cq);
 702
 703 err_unmap_arm:
 704         if (context)
 705                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 706                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 707
 708 err_unmap_set:
 709         if (context)
 710                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 711                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 712
 713         return ERR_PTR(err);
 714 }
 715
 716 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 717                                   int entries)
 718 {
 719         int ret;
 720
 721         spin_lock_irq(&cq->lock);
 722         if (cq->resize_buf) {
 723                 ret = -EBUSY;
 724                 goto unlock;
 725         }
 726
 727         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 728         if (!cq->resize_buf) {
 729                 ret = -ENOMEM;
 730                 goto unlock;
 731         }
 732
 733         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 734
 735         ret = 0;
 736
 737 unlock:
 738         spin_unlock_irq(&cq->lock);
 739
 740         if (ret)
 741                 return ret;
 742
 743         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 744         if (ret) {
 745                 spin_lock_irq(&cq->lock);
 746                 kfree(cq->resize_buf);
 747                 cq->resize_buf = NULL;
 748                 spin_unlock_irq(&cq->lock);
 749                 return ret;
 750         }
 751
 752         cq->resize_buf->cqe = entries - 1;
 753
 754         spin_lock_irq(&cq->lock);
 755         cq->resize_buf->state = CQ_RESIZE_READY;
 756         spin_unlock_irq(&cq->lock);
 757
 758         return 0;
 759 }
 760
 761 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 762 {
 763         struct mthca_dev *dev = to_mdev(ibcq->device);
 764         struct mthca_cq *cq = to_mcq(ibcq);
 765         struct mthca_resize_cq ucmd;
 766         u32 lkey;
 767         int ret;
 768
 769         if (entries < 1 || entries > dev->limits.max_cqes)
 770                 return -EINVAL;
 771
 772         mutex_lock(&cq->mutex);
 773
 774         entries = roundup_pow_of_two(entries + 1);
 775         if (entries == ibcq->cqe + 1) {
 776                 ret = 0;
 777                 goto out;
 778         }
 779
 780         if (cq->is_kernel) {
 781                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 782                 if (ret)
 783                         goto out;
 784                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 785         } else {
 786                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 787                         ret = -EFAULT;
 788                         goto out;
 789                 }
 790                 lkey = ucmd.lkey;
 791         }
 792
 793         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 794
 795         if (ret) {
 796                 if (cq->resize_buf) {
 797                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 798                                           cq->resize_buf->cqe);
 799                         kfree(cq->resize_buf);
 800                         spin_lock_irq(&cq->lock);
 801                         cq->resize_buf = NULL;
 802                         spin_unlock_irq(&cq->lock);
 803                 }
 804                 goto out;
 805         }
 806
 807         if (cq->is_kernel) {
 808                 struct mthca_cq_buf tbuf;
 809                 int tcqe;
 810
 811                 spin_lock_irq(&cq->lock);
 812                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 813                         mthca_cq_resize_copy_cqes(cq);
 814                         tbuf         = cq->buf;
 815                         tcqe         = cq->ibcq.cqe;
 816                         cq->buf      = cq->resize_buf->buf;
 817                         cq->ibcq.cqe = cq->resize_buf->cqe;
 818                 } else {
 819                         tbuf = cq->resize_buf->buf;
 820                         tcqe = cq->resize_buf->cqe;
 821                 }
 822
 823                 kfree(cq->resize_buf);
 824                 cq->resize_buf = NULL;
 825                 spin_unlock_irq(&cq->lock);
 826
 827                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 828         } else
 829                 ibcq->cqe = entries - 1;
 830
 831 out:
 832         mutex_unlock(&cq->mutex);
 833
 834         return ret;
 835 }
 836
 837 static int mthca_destroy_cq(struct ib_cq *cq)
 838 {
 839         if (cq->uobject) {
 840                 mthca_unmap_user_db(to_mdev(cq->device),
 841                                     &to_mucontext(cq->uobject->context)->uar,
 842                                     to_mucontext(cq->uobject->context)->db_tab,
 843                                     to_mcq(cq)->arm_db_index);
 844                 mthca_unmap_user_db(to_mdev(cq->device),
 845                                     &to_mucontext(cq->uobject->context)->uar,
 846                                     to_mucontext(cq->uobject->context)->db_tab,
 847                                     to_mcq(cq)->set_ci_db_index);
 848         }
 849         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 850         kfree(cq);
 851
 852         return 0;
 853 }
 854
 855 static inline u32 convert_access(int acc)
 856 {
 857         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 858                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 859                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 860                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 861                MTHCA_MPT_FLAG_LOCAL_READ;
 862 }
 863
 864 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 865 {
 866         struct mthca_mr *mr;
 867         int err;
 868
 869         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 870         if (!mr)
 871                 return ERR_PTR(-ENOMEM);
 872
 873         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 874                                      to_mpd(pd)->pd_num,
 875                                      convert_access(acc), mr);
 876
 877         if (err) {
 878                 kfree(mr);
 879                 return ERR_PTR(err);
 880         }
 881
 882         mr->umem = NULL;
 883
 884         return &mr->ibmr;
 885 }
 886
 887 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 888                                        struct ib_phys_buf *buffer_list,
 889                                        int                 num_phys_buf,
 890                                        int                 acc,
 891                                        u64                *iova_start)
 892 {
 893         struct mthca_mr *mr;
 894         u64 *page_list;
 895         u64 total_size;
 896         unsigned long mask;
 897         int shift;
 898         int npages;
 899         int err;
 900         int i, j, n;
 901
 902         mask = buffer_list[0].addr ^ *iova_start;
 903         total_size = 0;
 904         for (i = 0; i < num_phys_buf; ++i) {
 905                 if (i != 0)
 906                         mask |= buffer_list[i].addr;
 907                 if (i != num_phys_buf - 1)
 908                         mask |= buffer_list[i].addr + buffer_list[i].size;
 909
 910                 total_size += buffer_list[i].size;
 911         }
 912
 913         if (mask & ~PAGE_MASK)
 914                 return ERR_PTR(-EINVAL);
 915
 916         shift = __ffs(mask | 1 << 31);
 917
 918         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 919         buffer_list[0].addr &= ~0ull << shift;
 920
 921         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 922         if (!mr)
 923                 return ERR_PTR(-ENOMEM);
 924
 925         npages = 0;
 926         for (i = 0; i < num_phys_buf; ++i)
 927                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 928
 929         if (!npages)
 930                 return &mr->ibmr;
 931
 932         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 933         if (!page_list) {
 934                 kfree(mr);
 935                 return ERR_PTR(-ENOMEM);
 936         }
 937
 938         n = 0;
 939         for (i = 0; i < num_phys_buf; ++i)
 940                 for (j = 0;
 941                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 942                      ++j)
 943                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 944
 945         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 946                   "in PD %x; shift %d, npages %d.\n",
 947                   (unsigned long long) buffer_list[0].addr,
 948                   (unsigned long long) *iova_start,
 949                   to_mpd(pd)->pd_num,
 950                   shift, npages);
 951
 952         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 953                                   to_mpd(pd)->pd_num,
 954                                   page_list, shift, npages,
 955                                   *iova_start, total_size,
 956                                   convert_access(acc), mr);
 957
 958         if (err) {
 959                 kfree(page_list);
 960                 kfree(mr);
 961                 return ERR_PTR(err);
 962         }
 963
 964         kfree(page_list);
 965         mr->umem = NULL;
 966
 967         return &mr->ibmr;
 968 }
 969
 970 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 971                                        u64 virt, int acc, struct ib_udata *udata)
 972 {
 973         struct mthca_dev *dev = to_mdev(pd->device);
 974         struct ib_umem_chunk *chunk;
 975         struct mthca_mr *mr;
 976         struct mthca_reg_mr ucmd;
 977         u64 *pages;
 978         int shift, n, len;
 979         int i, j, k;
 980         int err = 0;
 981         int write_mtt_size;
 982
 983         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
 984                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
 985                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 986                                    current->comm);
 987                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 988                 }
 989                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
 990                 ucmd.mr_attrs = 0;
 991         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 992                 return ERR_PTR(-EFAULT);
 993
 994         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 995         if (!mr)
 996                 return ERR_PTR(-ENOMEM);
 997
 998         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
 999                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1000
1001         if (IS_ERR(mr->umem)) {
1002                 err = PTR_ERR(mr->umem);
1003                 goto err;
1004         }
1005
1006         shift = ffs(mr->umem->page_size) - 1;
1007
1008         n = 0;
1009         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1010                 n += chunk->nents;
1011
1012         mr->mtt = mthca_alloc_mtt(dev, n);
1013         if (IS_ERR(mr->mtt)) {
1014                 err = PTR_ERR(mr->mtt);
1015                 goto err_umem;
1016         }
1017
1018         pages = (u64 *) __get_free_page(GFP_KERNEL);
1019         if (!pages) {
1020                 err = -ENOMEM;
1021                 goto err_mtt;
1022         }
1023
1024         i = n = 0;
1025
1026         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1027
1028         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1029                 for (j = 0; j < chunk->nmap; ++j) {
1030                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1031                         for (k = 0; k < len; ++k) {
1032                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1033                                         mr->umem->page_size * k;
1034                                 /*
1035                                  * Be friendly to write_mtt and pass it chunks
1036                                  * of appropriate size.
1037                                  */
1038                                 if (i == write_mtt_size) {
1039                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1040                                         if (err)
1041                                                 goto mtt_done;
1042                                         n += i;
1043                                         i = 0;
1044                                 }
1045                         }
1046                 }
1047
1048         if (i)
1049                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1050 mtt_done:
1051         free_page((unsigned long) pages);
1052         if (err)
1053                 goto err_mtt;
1054
1055         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1056                              convert_access(acc), mr);
1057
1058         if (err)
1059                 goto err_mtt;
1060
1061         return &mr->ibmr;
1062
1063 err_mtt:
1064         mthca_free_mtt(dev, mr->mtt);
1065
1066 err_umem:
1067         ib_umem_release(mr->umem);
1068
1069 err:
1070         kfree(mr);
1071         return ERR_PTR(err);
1072 }
1073
1074 static int mthca_dereg_mr(struct ib_mr *mr)
1075 {
1076         struct mthca_mr *mmr = to_mmr(mr);
1077
1078         mthca_free_mr(to_mdev(mr->device), mmr);
1079         if (mmr->umem)
1080                 ib_umem_release(mmr->umem);
1081         kfree(mmr);
1082
1083         return 0;
1084 }
1085
1086 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1087                                       struct ib_fmr_attr *fmr_attr)
1088 {
1089         struct mthca_fmr *fmr;
1090         int err;
1091
1092         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1093         if (!fmr)
1094                 return ERR_PTR(-ENOMEM);
1095
1096         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1097         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1098                              convert_access(mr_access_flags), fmr);
1099
1100         if (err) {
1101                 kfree(fmr);
1102                 return ERR_PTR(err);
1103         }
1104
1105         return &fmr->ibmr;
1106 }
1107
1108 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1109 {
1110         struct mthca_fmr *mfmr = to_mfmr(fmr);
1111         int err;
1112
1113         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1114         if (err)
1115                 return err;
1116
1117         kfree(mfmr);
1118         return 0;
1119 }
1120
1121 static int mthca_unmap_fmr(struct list_head *fmr_list)
1122 {
1123         struct ib_fmr *fmr;
1124         int err;
1125         struct mthca_dev *mdev = NULL;
1126
1127         list_for_each_entry(fmr, fmr_list, list) {
1128                 if (mdev && to_mdev(fmr->device) != mdev)
1129                         return -EINVAL;
1130                 mdev = to_mdev(fmr->device);
1131         }
1132
1133         if (!mdev)
1134                 return 0;
1135
1136         if (mthca_is_memfree(mdev)) {
1137                 list_for_each_entry(fmr, fmr_list, list)
1138                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1139
1140                 wmb();
1141         } else
1142                 list_for_each_entry(fmr, fmr_list, list)
1143                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1144
1145         err = mthca_SYNC_TPT(mdev);
1146         return err;
1147 }
1148
1149 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1150                         char *buf)
1151 {
1152         struct mthca_dev *dev =
1153                 container_of(device, struct mthca_dev, ib_dev.dev);
1154         return sprintf(buf, "%x\n", dev->rev_id);
1155 }
1156
1157 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1158                            char *buf)
1159 {
1160         struct mthca_dev *dev =
1161                 container_of(device, struct mthca_dev, ib_dev.dev);
1162         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1163                        (int) (dev->fw_ver >> 16) & 0xffff,
1164                        (int) dev->fw_ver & 0xffff);
1165 }
1166
1167 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1168                         char *buf)
1169 {
1170         struct mthca_dev *dev =
1171                 container_of(device, struct mthca_dev, ib_dev.dev);
1172         switch (dev->pdev->device) {
1173         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1174                 return sprintf(buf, "MT23108\n");
1175         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1176                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1177         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1178                 return sprintf(buf, "MT25208\n");
1179         case PCI_DEVICE_ID_MELLANOX_SINAI:
1180         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1181                 return sprintf(buf, "MT25204\n");
1182         default:
1183                 return sprintf(buf, "unknown\n");
1184         }
1185 }
1186
1187 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1188                           char *buf)
1189 {
1190         struct mthca_dev *dev =
1191                 container_of(device, struct mthca_dev, ib_dev.dev);
1192         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1193 }
1194
1195 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1196 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1197 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1198 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1199
1200 static struct device_attribute *mthca_dev_attributes[] = {
1201         &dev_attr_hw_rev,
1202         &dev_attr_fw_ver,
1203         &dev_attr_hca_type,
1204         &dev_attr_board_id
1205 };
1206
1207 static int mthca_init_node_data(struct mthca_dev *dev)
1208 {
1209         struct ib_smp *in_mad  = NULL;
1210         struct ib_smp *out_mad = NULL;
1211         int err = -ENOMEM;
1212
1213         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1214         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1215         if (!in_mad || !out_mad)
1216                 goto out;
1217
1218         init_query_mad(in_mad);
1219         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1220
1221         err = mthca_MAD_IFC(dev, 1, 1,
1222                             1, NULL, NULL, in_mad, out_mad);
1223         if (err)
1224                 goto out;
1225
1226         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1227
1228         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1229
1230         err = mthca_MAD_IFC(dev, 1, 1,
1231                             1, NULL, NULL, in_mad, out_mad);
1232         if (err)
1233                 goto out;
1234
1235         if (mthca_is_memfree(dev))
1236                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1237         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1238
1239 out:
1240         kfree(in_mad);
1241         kfree(out_mad);
1242         return err;
1243 }
1244
1245 int mthca_register_device(struct mthca_dev *dev)
1246 {
1247         int ret;
1248         int i;
1249
1250         ret = mthca_init_node_data(dev);
1251         if (ret)
1252                 return ret;
1253
1254         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1255         dev->ib_dev.owner                = THIS_MODULE;
1256
1257         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1258         dev->ib_dev.uverbs_cmd_mask      =
1259                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1260                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1261                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1262                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1263                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1264                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1265                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1266                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1267                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1268                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1269                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1270                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1271                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1272                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1273                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1274                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1275                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1276         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1277         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1278         dev->ib_dev.num_comp_vectors     = 1;
1279         dev->ib_dev.dma_device           = &dev->pdev->dev;
1280         dev->ib_dev.query_device         = mthca_query_device;
1281         dev->ib_dev.query_port           = mthca_query_port;
1282         dev->ib_dev.modify_device        = mthca_modify_device;
1283         dev->ib_dev.modify_port          = mthca_modify_port;
1284         dev->ib_dev.query_pkey           = mthca_query_pkey;
1285         dev->ib_dev.query_gid            = mthca_query_gid;
1286         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1287         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1288         dev->ib_dev.mmap                 = mthca_mmap_uar;
1289         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1290         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1291         dev->ib_dev.create_ah            = mthca_ah_create;
1292         dev->ib_dev.query_ah             = mthca_ah_query;
1293         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1294
1295         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1296                 dev->ib_dev.create_srq           = mthca_create_srq;
1297                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1298                 dev->ib_dev.query_srq            = mthca_query_srq;
1299                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1300                 dev->ib_dev.uverbs_cmd_mask     |=
1301                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1302                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1303                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1304                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1305
1306                 if (mthca_is_memfree(dev))
1307                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1308                 else
1309                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1310         }
1311
1312         dev->ib_dev.create_qp            = mthca_create_qp;
1313         dev->ib_dev.modify_qp            = mthca_modify_qp;
1314         dev->ib_dev.query_qp             = mthca_query_qp;
1315         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1316         dev->ib_dev.create_cq            = mthca_create_cq;
1317         dev->ib_dev.resize_cq            = mthca_resize_cq;
1318         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1319         dev->ib_dev.poll_cq              = mthca_poll_cq;
1320         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1321         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1322         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1323         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1324
1325         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1326                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1327                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1328                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1329                 if (mthca_is_memfree(dev))
1330                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1331                 else
1332                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1333         }
1334
1335         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1336         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1337         dev->ib_dev.process_mad          = mthca_process_mad;
1338
1339         if (mthca_is_memfree(dev)) {
1340                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1341                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1342                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1343         } else {
1344                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1345                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1346                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1347         }
1348
1349         mutex_init(&dev->cap_mask_mutex);
1350
1351         ret = ib_register_device(&dev->ib_dev, NULL);
1352         if (ret)
1353                 return ret;
1354
1355         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1356                 ret = device_create_file(&dev->ib_dev.dev,
1357                                          mthca_dev_attributes[i]);
1358                 if (ret) {
1359                         ib_unregister_device(&dev->ib_dev);
1360                         return ret;
1361                 }
1362         }
1363
1364         mthca_start_catas_poll(dev);
1365
1366         return 0;
1367 }
1368
1369 void mthca_unregister_device(struct mthca_dev *dev)
1370 {
1371         mthca_stop_catas_poll(dev);
1372         ib_unregister_device(&dev->ib_dev);
1373 }