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/mm.h>
  43
  44 #include "mthca_dev.h"
  45 #include "mthca_cmd.h"
  46 #include "mthca_user.h"
  47 #include "mthca_memfree.h"
  48
  49 static void init_query_mad(struct ib_smp *mad)
  50 {
  51         mad->base_version  = 1;
  52         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  53         mad->class_version = 1;
  54         mad->method        = IB_MGMT_METHOD_GET;
  55 }
  56
  57 static int mthca_query_device(struct ib_device *ibdev,
  58                               struct ib_device_attr *props)
  59 {
  60         struct ib_smp *in_mad  = NULL;
  61         struct ib_smp *out_mad = NULL;
  62         int err = -ENOMEM;
  63         struct mthca_dev *mdev = to_mdev(ibdev);
  64
  65         u8 status;
  66
  67         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  68         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  69         if (!in_mad || !out_mad)
  70                 goto out;
  71
  72         memset(props, 0, sizeof *props);
  73
  74         props->fw_ver              = mdev->fw_ver;
  75
  76         init_query_mad(in_mad);
  77         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  78
  79         err = mthca_MAD_IFC(mdev, 1, 1,
  80                             1, NULL, NULL, in_mad, out_mad,
  81                             &status);
  82         if (err)
  83                 goto out;
  84         if (status) {
  85                 err = -EINVAL;
  86                 goto out;
  87         }
  88
  89         props->device_cap_flags    = mdev->device_cap_flags;
  90         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  91                 0xffffff;
  92         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  93         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  94         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  95
  96         props->max_mr_size         = ~0ull;
  97         props->page_size_cap       = mdev->limits.page_size_cap;
  98         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  99         props->max_qp_wr           = mdev->limits.max_wqes;
 100         props->max_sge             = mdev->limits.max_sg;
 101         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 102         props->max_cqe             = mdev->limits.max_cqes;
 103         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 104         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 105         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 106         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 107         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 108         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 109         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 110         props->max_srq_sge         = mdev->limits.max_srq_sge;
 111         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 112         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 113                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 114         props->max_pkeys           = mdev->limits.pkey_table_len;
 115         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 116         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 117         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 118                                            props->max_mcast_grp;
 119         /*
 120          * If Sinai memory key optimization is being used, then only
 121          * the 8-bit key portion will change.  For other HCAs, the
 122          * unused index bits will also be used for FMR remapping.
 123          */
 124         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 125                 props->max_map_per_fmr = 255;
 126         else
 127                 props->max_map_per_fmr =
 128                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 129
 130         err = 0;
 131  out:
 132         kfree(in_mad);
 133         kfree(out_mad);
 134         return err;
 135 }
 136
 137 static int mthca_query_port(struct ib_device *ibdev,
 138                             u8 port, struct ib_port_attr *props)
 139 {
 140         struct ib_smp *in_mad  = NULL;
 141         struct ib_smp *out_mad = NULL;
 142         int err = -ENOMEM;
 143         u8 status;
 144
 145         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 146         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 147         if (!in_mad || !out_mad)
 148                 goto out;
 149
 150         memset(props, 0, sizeof *props);
 151
 152         init_query_mad(in_mad);
 153         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 154         in_mad->attr_mod = cpu_to_be32(port);
 155
 156         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 157                             port, NULL, NULL, in_mad, out_mad,
 158                             &status);
 159         if (err)
 160                 goto out;
 161         if (status) {
 162                 err = -EINVAL;
 163                 goto out;
 164         }
 165
 166         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 167         props->lmc               = out_mad->data[34] & 0x7;
 168         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 169         props->sm_sl             = out_mad->data[36] & 0xf;
 170         props->state             = out_mad->data[32] & 0xf;
 171         props->phys_state        = out_mad->data[33] >> 4;
 172         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 173         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 174         props->max_msg_sz        = 0x80000000;
 175         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 176         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 177         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 178         props->active_width      = out_mad->data[31] & 0xf;
 179         props->active_speed      = out_mad->data[35] >> 4;
 180         props->max_mtu           = out_mad->data[41] & 0xf;
 181         props->active_mtu        = out_mad->data[36] >> 4;
 182         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 183         props->max_vl_num        = out_mad->data[37] >> 4;
 184         props->init_type_reply   = out_mad->data[41] >> 4;
 185
 186  out:
 187         kfree(in_mad);
 188         kfree(out_mad);
 189         return err;
 190 }
 191
 192 static int mthca_modify_device(struct ib_device *ibdev,
 193                                int mask,
 194                                struct ib_device_modify *props)
 195 {
 196         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 197                 return -EOPNOTSUPP;
 198
 199         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 200                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 201                         return -ERESTARTSYS;
 202                 memcpy(ibdev->node_desc, props->node_desc, 64);
 203                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 204         }
 205
 206         return 0;
 207 }
 208
 209 static int mthca_modify_port(struct ib_device *ibdev,
 210                              u8 port, int port_modify_mask,
 211                              struct ib_port_modify *props)
 212 {
 213         struct mthca_set_ib_param set_ib;
 214         struct ib_port_attr attr;
 215         int err;
 216         u8 status;
 217
 218         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 219                 return -ERESTARTSYS;
 220
 221         err = mthca_query_port(ibdev, port, &attr);
 222         if (err)
 223                 goto out;
 224
 225         set_ib.set_si_guid     = 0;
 226         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 227
 228         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 229                 ~props->clr_port_cap_mask;
 230
 231         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
 232         if (err)
 233                 goto out;
 234         if (status) {
 235                 err = -EINVAL;
 236                 goto out;
 237         }
 238
 239 out:
 240         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 241         return err;
 242 }
 243
 244 static int mthca_query_pkey(struct ib_device *ibdev,
 245                             u8 port, u16 index, u16 *pkey)
 246 {
 247         struct ib_smp *in_mad  = NULL;
 248         struct ib_smp *out_mad = NULL;
 249         int err = -ENOMEM;
 250         u8 status;
 251
 252         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 253         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 254         if (!in_mad || !out_mad)
 255                 goto out;
 256
 257         init_query_mad(in_mad);
 258         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 259         in_mad->attr_mod = cpu_to_be32(index / 32);
 260
 261         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 262                             port, NULL, NULL, in_mad, out_mad,
 263                             &status);
 264         if (err)
 265                 goto out;
 266         if (status) {
 267                 err = -EINVAL;
 268                 goto out;
 269         }
 270
 271         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 272
 273  out:
 274         kfree(in_mad);
 275         kfree(out_mad);
 276         return err;
 277 }
 278
 279 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 280                            int index, union ib_gid *gid)
 281 {
 282         struct ib_smp *in_mad  = NULL;
 283         struct ib_smp *out_mad = NULL;
 284         int err = -ENOMEM;
 285         u8 status;
 286
 287         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 288         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 289         if (!in_mad || !out_mad)
 290                 goto out;
 291
 292         init_query_mad(in_mad);
 293         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 294         in_mad->attr_mod = cpu_to_be32(port);
 295
 296         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 297                             port, NULL, NULL, in_mad, out_mad,
 298                             &status);
 299         if (err)
 300                 goto out;
 301         if (status) {
 302                 err = -EINVAL;
 303                 goto out;
 304         }
 305
 306         memcpy(gid->raw, out_mad->data + 8, 8);
 307
 308         init_query_mad(in_mad);
 309         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 310         in_mad->attr_mod = cpu_to_be32(index / 8);
 311
 312         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 313                             port, NULL, NULL, in_mad, out_mad,
 314                             &status);
 315         if (err)
 316                 goto out;
 317         if (status) {
 318                 err = -EINVAL;
 319                 goto out;
 320         }
 321
 322         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 323
 324  out:
 325         kfree(in_mad);
 326         kfree(out_mad);
 327         return err;
 328 }
 329
 330 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 331                                                 struct ib_udata *udata)
 332 {
 333         struct mthca_alloc_ucontext_resp uresp;
 334         struct mthca_ucontext           *context;
 335         int                              err;
 336
 337         if (!(to_mdev(ibdev)->active))
 338                 return ERR_PTR(-EAGAIN);
 339
 340         memset(&uresp, 0, sizeof uresp);
 341
 342         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 343         if (mthca_is_memfree(to_mdev(ibdev)))
 344                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 345         else
 346                 uresp.uarc_size = 0;
 347
 348         context = kmalloc(sizeof *context, GFP_KERNEL);
 349         if (!context)
 350                 return ERR_PTR(-ENOMEM);
 351
 352         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 353         if (err) {
 354                 kfree(context);
 355                 return ERR_PTR(err);
 356         }
 357
 358         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 359         if (IS_ERR(context->db_tab)) {
 360                 err = PTR_ERR(context->db_tab);
 361                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 362                 kfree(context);
 363                 return ERR_PTR(err);
 364         }
 365
 366         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 367                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 368                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 369                 kfree(context);
 370                 return ERR_PTR(-EFAULT);
 371         }
 372
 373         context->reg_mr_warned = 0;
 374
 375         return &context->ibucontext;
 376 }
 377
 378 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 379 {
 380         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 381                                   to_mucontext(context)->db_tab);
 382         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 383         kfree(to_mucontext(context));
 384
 385         return 0;
 386 }
 387
 388 static int mthca_mmap_uar(struct ib_ucontext *context,
 389                           struct vm_area_struct *vma)
 390 {
 391         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 392                 return -EINVAL;
 393
 394         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 395
 396         if (io_remap_pfn_range(vma, vma->vm_start,
 397                                to_mucontext(context)->uar.pfn,
 398                                PAGE_SIZE, vma->vm_page_prot))
 399                 return -EAGAIN;
 400
 401         return 0;
 402 }
 403
 404 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 405                                     struct ib_ucontext *context,
 406                                     struct ib_udata *udata)
 407 {
 408         struct mthca_pd *pd;
 409         int err;
 410
 411         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 412         if (!pd)
 413                 return ERR_PTR(-ENOMEM);
 414
 415         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 416         if (err) {
 417                 kfree(pd);
 418                 return ERR_PTR(err);
 419         }
 420
 421         if (context) {
 422                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 423                         mthca_pd_free(to_mdev(ibdev), pd);
 424                         kfree(pd);
 425                         return ERR_PTR(-EFAULT);
 426                 }
 427         }
 428
 429         return &pd->ibpd;
 430 }
 431
 432 static int mthca_dealloc_pd(struct ib_pd *pd)
 433 {
 434         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 435         kfree(pd);
 436
 437         return 0;
 438 }
 439
 440 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 441                                      struct ib_ah_attr *ah_attr)
 442 {
 443         int err;
 444         struct mthca_ah *ah;
 445
 446         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 447         if (!ah)
 448                 return ERR_PTR(-ENOMEM);
 449
 450         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 451         if (err) {
 452                 kfree(ah);
 453                 return ERR_PTR(err);
 454         }
 455
 456         return &ah->ibah;
 457 }
 458
 459 static int mthca_ah_destroy(struct ib_ah *ah)
 460 {
 461         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 462         kfree(ah);
 463
 464         return 0;
 465 }
 466
 467 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 468                                        struct ib_srq_init_attr *init_attr,
 469                                        struct ib_udata *udata)
 470 {
 471         struct mthca_create_srq ucmd;
 472         struct mthca_ucontext *context = NULL;
 473         struct mthca_srq *srq;
 474         int err;
 475
 476         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 477         if (!srq)
 478                 return ERR_PTR(-ENOMEM);
 479
 480         if (pd->uobject) {
 481                 context = to_mucontext(pd->uobject->context);
 482
 483                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 484                         err = -EFAULT;
 485                         goto err_free;
 486                 }
 487
 488                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 489                                         context->db_tab, ucmd.db_index,
 490                                         ucmd.db_page);
 491
 492                 if (err)
 493                         goto err_free;
 494
 495                 srq->mr.ibmr.lkey = ucmd.lkey;
 496                 srq->db_index     = ucmd.db_index;
 497         }
 498
 499         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 500                               &init_attr->attr, srq);
 501
 502         if (err && pd->uobject)
 503                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 504                                     context->db_tab, ucmd.db_index);
 505
 506         if (err)
 507                 goto err_free;
 508
 509         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 510                 mthca_free_srq(to_mdev(pd->device), srq);
 511                 err = -EFAULT;
 512                 goto err_free;
 513         }
 514
 515         return &srq->ibsrq;
 516
 517 err_free:
 518         kfree(srq);
 519
 520         return ERR_PTR(err);
 521 }
 522
 523 static int mthca_destroy_srq(struct ib_srq *srq)
 524 {
 525         struct mthca_ucontext *context;
 526
 527         if (srq->uobject) {
 528                 context = to_mucontext(srq->uobject->context);
 529
 530                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 531                                     context->db_tab, to_msrq(srq)->db_index);
 532         }
 533
 534         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 535         kfree(srq);
 536
 537         return 0;
 538 }
 539
 540 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 541                                      struct ib_qp_init_attr *init_attr,
 542                                      struct ib_udata *udata)
 543 {
 544         struct mthca_create_qp ucmd;
 545         struct mthca_qp *qp;
 546         int err;
 547
 548         if (init_attr->create_flags)
 549                 return ERR_PTR(-EINVAL);
 550
 551         switch (init_attr->qp_type) {
 552         case IB_QPT_RC:
 553         case IB_QPT_UC:
 554         case IB_QPT_UD:
 555         {
 556                 struct mthca_ucontext *context;
 557
 558                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 559                 if (!qp)
 560                         return ERR_PTR(-ENOMEM);
 561
 562                 if (pd->uobject) {
 563                         context = to_mucontext(pd->uobject->context);
 564
 565                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 566                                 kfree(qp);
 567                                 return ERR_PTR(-EFAULT);
 568                         }
 569
 570                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 571                                                 context->db_tab,
 572                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 573                         if (err) {
 574                                 kfree(qp);
 575                                 return ERR_PTR(err);
 576                         }
 577
 578                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 579                                                 context->db_tab,
 580                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 581                         if (err) {
 582                                 mthca_unmap_user_db(to_mdev(pd->device),
 583                                                     &context->uar,
 584                                                     context->db_tab,
 585                                                     ucmd.sq_db_index);
 586                                 kfree(qp);
 587                                 return ERR_PTR(err);
 588                         }
 589
 590                         qp->mr.ibmr.lkey = ucmd.lkey;
 591                         qp->sq.db_index  = ucmd.sq_db_index;
 592                         qp->rq.db_index  = ucmd.rq_db_index;
 593                 }
 594
 595                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 596                                      to_mcq(init_attr->send_cq),
 597                                      to_mcq(init_attr->recv_cq),
 598                                      init_attr->qp_type, init_attr->sq_sig_type,
 599                                      &init_attr->cap, qp);
 600
 601                 if (err && pd->uobject) {
 602                         context = to_mucontext(pd->uobject->context);
 603
 604                         mthca_unmap_user_db(to_mdev(pd->device),
 605                                             &context->uar,
 606                                             context->db_tab,
 607                                             ucmd.sq_db_index);
 608                         mthca_unmap_user_db(to_mdev(pd->device),
 609                                             &context->uar,
 610                                             context->db_tab,
 611                                             ucmd.rq_db_index);
 612                 }
 613
 614                 qp->ibqp.qp_num = qp->qpn;
 615                 break;
 616         }
 617         case IB_QPT_SMI:
 618         case IB_QPT_GSI:
 619         {
 620                 /* Don't allow userspace to create special QPs */
 621                 if (pd->uobject)
 622                         return ERR_PTR(-EINVAL);
 623
 624                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 625                 if (!qp)
 626                         return ERR_PTR(-ENOMEM);
 627
 628                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 629
 630                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 631                                       to_mcq(init_attr->send_cq),
 632                                       to_mcq(init_attr->recv_cq),
 633                                       init_attr->sq_sig_type, &init_attr->cap,
 634                                       qp->ibqp.qp_num, init_attr->port_num,
 635                                       to_msqp(qp));
 636                 break;
 637         }
 638         default:
 639                 /* Don't support raw QPs */
 640                 return ERR_PTR(-ENOSYS);
 641         }
 642
 643         if (err) {
 644                 kfree(qp);
 645                 return ERR_PTR(err);
 646         }
 647
 648         init_attr->cap.max_send_wr     = qp->sq.max;
 649         init_attr->cap.max_recv_wr     = qp->rq.max;
 650         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 651         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 652         init_attr->cap.max_inline_data = qp->max_inline_data;
 653
 654         return &qp->ibqp;
 655 }
 656
 657 static int mthca_destroy_qp(struct ib_qp *qp)
 658 {
 659         if (qp->uobject) {
 660                 mthca_unmap_user_db(to_mdev(qp->device),
 661                                     &to_mucontext(qp->uobject->context)->uar,
 662                                     to_mucontext(qp->uobject->context)->db_tab,
 663                                     to_mqp(qp)->sq.db_index);
 664                 mthca_unmap_user_db(to_mdev(qp->device),
 665                                     &to_mucontext(qp->uobject->context)->uar,
 666                                     to_mucontext(qp->uobject->context)->db_tab,
 667                                     to_mqp(qp)->rq.db_index);
 668         }
 669         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 670         kfree(qp);
 671         return 0;
 672 }
 673
 674 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
 675                                      int comp_vector,
 676                                      struct ib_ucontext *context,
 677                                      struct ib_udata *udata)
 678 {
 679         struct mthca_create_cq ucmd;
 680         struct mthca_cq *cq;
 681         int nent;
 682         int err;
 683
 684         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 685                 return ERR_PTR(-EINVAL);
 686
 687         if (context) {
 688                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 689                         return ERR_PTR(-EFAULT);
 690
 691                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 692                                         to_mucontext(context)->db_tab,
 693                                         ucmd.set_db_index, ucmd.set_db_page);
 694                 if (err)
 695                         return ERR_PTR(err);
 696
 697                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 698                                         to_mucontext(context)->db_tab,
 699                                         ucmd.arm_db_index, ucmd.arm_db_page);
 700                 if (err)
 701                         goto err_unmap_set;
 702         }
 703
 704         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 705         if (!cq) {
 706                 err = -ENOMEM;
 707                 goto err_unmap_arm;
 708         }
 709
 710         if (context) {
 711                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 712                 cq->set_ci_db_index  = ucmd.set_db_index;
 713                 cq->arm_db_index     = ucmd.arm_db_index;
 714         }
 715
 716         for (nent = 1; nent <= entries; nent <<= 1)
 717                 ; /* nothing */
 718
 719         err = mthca_init_cq(to_mdev(ibdev), nent,
 720                             context ? to_mucontext(context) : NULL,
 721                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 722                             cq);
 723         if (err)
 724                 goto err_free;
 725
 726         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 727                 mthca_free_cq(to_mdev(ibdev), cq);
 728                 goto err_free;
 729         }
 730
 731         cq->resize_buf = NULL;
 732
 733         return &cq->ibcq;
 734
 735 err_free:
 736         kfree(cq);
 737
 738 err_unmap_arm:
 739         if (context)
 740                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 741                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 742
 743 err_unmap_set:
 744         if (context)
 745                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 746                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 747
 748         return ERR_PTR(err);
 749 }
 750
 751 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 752                                   int entries)
 753 {
 754         int ret;
 755
 756         spin_lock_irq(&cq->lock);
 757         if (cq->resize_buf) {
 758                 ret = -EBUSY;
 759                 goto unlock;
 760         }
 761
 762         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 763         if (!cq->resize_buf) {
 764                 ret = -ENOMEM;
 765                 goto unlock;
 766         }
 767
 768         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 769
 770         ret = 0;
 771
 772 unlock:
 773         spin_unlock_irq(&cq->lock);
 774
 775         if (ret)
 776                 return ret;
 777
 778         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 779         if (ret) {
 780                 spin_lock_irq(&cq->lock);
 781                 kfree(cq->resize_buf);
 782                 cq->resize_buf = NULL;
 783                 spin_unlock_irq(&cq->lock);
 784                 return ret;
 785         }
 786
 787         cq->resize_buf->cqe = entries - 1;
 788
 789         spin_lock_irq(&cq->lock);
 790         cq->resize_buf->state = CQ_RESIZE_READY;
 791         spin_unlock_irq(&cq->lock);
 792
 793         return 0;
 794 }
 795
 796 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 797 {
 798         struct mthca_dev *dev = to_mdev(ibcq->device);
 799         struct mthca_cq *cq = to_mcq(ibcq);
 800         struct mthca_resize_cq ucmd;
 801         u32 lkey;
 802         u8 status;
 803         int ret;
 804
 805         if (entries < 1 || entries > dev->limits.max_cqes)
 806                 return -EINVAL;
 807
 808         mutex_lock(&cq->mutex);
 809
 810         entries = roundup_pow_of_two(entries + 1);
 811         if (entries == ibcq->cqe + 1) {
 812                 ret = 0;
 813                 goto out;
 814         }
 815
 816         if (cq->is_kernel) {
 817                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 818                 if (ret)
 819                         goto out;
 820                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 821         } else {
 822                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 823                         ret = -EFAULT;
 824                         goto out;
 825                 }
 826                 lkey = ucmd.lkey;
 827         }
 828
 829         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
 830         if (status)
 831                 ret = -EINVAL;
 832
 833         if (ret) {
 834                 if (cq->resize_buf) {
 835                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 836                                           cq->resize_buf->cqe);
 837                         kfree(cq->resize_buf);
 838                         spin_lock_irq(&cq->lock);
 839                         cq->resize_buf = NULL;
 840                         spin_unlock_irq(&cq->lock);
 841                 }
 842                 goto out;
 843         }
 844
 845         if (cq->is_kernel) {
 846                 struct mthca_cq_buf tbuf;
 847                 int tcqe;
 848
 849                 spin_lock_irq(&cq->lock);
 850                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 851                         mthca_cq_resize_copy_cqes(cq);
 852                         tbuf         = cq->buf;
 853                         tcqe         = cq->ibcq.cqe;
 854                         cq->buf      = cq->resize_buf->buf;
 855                         cq->ibcq.cqe = cq->resize_buf->cqe;
 856                 } else {
 857                         tbuf = cq->resize_buf->buf;
 858                         tcqe = cq->resize_buf->cqe;
 859                 }
 860
 861                 kfree(cq->resize_buf);
 862                 cq->resize_buf = NULL;
 863                 spin_unlock_irq(&cq->lock);
 864
 865                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 866         } else
 867                 ibcq->cqe = entries - 1;
 868
 869 out:
 870         mutex_unlock(&cq->mutex);
 871
 872         return ret;
 873 }
 874
 875 static int mthca_destroy_cq(struct ib_cq *cq)
 876 {
 877         if (cq->uobject) {
 878                 mthca_unmap_user_db(to_mdev(cq->device),
 879                                     &to_mucontext(cq->uobject->context)->uar,
 880                                     to_mucontext(cq->uobject->context)->db_tab,
 881                                     to_mcq(cq)->arm_db_index);
 882                 mthca_unmap_user_db(to_mdev(cq->device),
 883                                     &to_mucontext(cq->uobject->context)->uar,
 884                                     to_mucontext(cq->uobject->context)->db_tab,
 885                                     to_mcq(cq)->set_ci_db_index);
 886         }
 887         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 888         kfree(cq);
 889
 890         return 0;
 891 }
 892
 893 static inline u32 convert_access(int acc)
 894 {
 895         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 896                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 897                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 898                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 899                MTHCA_MPT_FLAG_LOCAL_READ;
 900 }
 901
 902 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 903 {
 904         struct mthca_mr *mr;
 905         int err;
 906
 907         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 908         if (!mr)
 909                 return ERR_PTR(-ENOMEM);
 910
 911         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 912                                      to_mpd(pd)->pd_num,
 913                                      convert_access(acc), mr);
 914
 915         if (err) {
 916                 kfree(mr);
 917                 return ERR_PTR(err);
 918         }
 919
 920         mr->umem = NULL;
 921
 922         return &mr->ibmr;
 923 }
 924
 925 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 926                                        struct ib_phys_buf *buffer_list,
 927                                        int                 num_phys_buf,
 928                                        int                 acc,
 929                                        u64                *iova_start)
 930 {
 931         struct mthca_mr *mr;
 932         u64 *page_list;
 933         u64 total_size;
 934         unsigned long mask;
 935         int shift;
 936         int npages;
 937         int err;
 938         int i, j, n;
 939
 940         mask = buffer_list[0].addr ^ *iova_start;
 941         total_size = 0;
 942         for (i = 0; i < num_phys_buf; ++i) {
 943                 if (i != 0)
 944                         mask |= buffer_list[i].addr;
 945                 if (i != num_phys_buf - 1)
 946                         mask |= buffer_list[i].addr + buffer_list[i].size;
 947
 948                 total_size += buffer_list[i].size;
 949         }
 950
 951         if (mask & ~PAGE_MASK)
 952                 return ERR_PTR(-EINVAL);
 953
 954         shift = __ffs(mask | 1 << 31);
 955
 956         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 957         buffer_list[0].addr &= ~0ull << shift;
 958
 959         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 960         if (!mr)
 961                 return ERR_PTR(-ENOMEM);
 962
 963         npages = 0;
 964         for (i = 0; i < num_phys_buf; ++i)
 965                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 966
 967         if (!npages)
 968                 return &mr->ibmr;
 969
 970         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 971         if (!page_list) {
 972                 kfree(mr);
 973                 return ERR_PTR(-ENOMEM);
 974         }
 975
 976         n = 0;
 977         for (i = 0; i < num_phys_buf; ++i)
 978                 for (j = 0;
 979                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 980                      ++j)
 981                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 982
 983         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 984                   "in PD %x; shift %d, npages %d.\n",
 985                   (unsigned long long) buffer_list[0].addr,
 986                   (unsigned long long) *iova_start,
 987                   to_mpd(pd)->pd_num,
 988                   shift, npages);
 989
 990         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 991                                   to_mpd(pd)->pd_num,
 992                                   page_list, shift, npages,
 993                                   *iova_start, total_size,
 994                                   convert_access(acc), mr);
 995
 996         if (err) {
 997                 kfree(page_list);
 998                 kfree(mr);
 999                 return ERR_PTR(err);
1000         }
1001
1002         kfree(page_list);
1003         mr->umem = NULL;
1004
1005         return &mr->ibmr;
1006 }
1007
1008 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1009                                        u64 virt, int acc, struct ib_udata *udata)
1010 {
1011         struct mthca_dev *dev = to_mdev(pd->device);
1012         struct ib_umem_chunk *chunk;
1013         struct mthca_mr *mr;
1014         struct mthca_reg_mr ucmd;
1015         u64 *pages;
1016         int shift, n, len;
1017         int i, j, k;
1018         int err = 0;
1019         int write_mtt_size;
1020
1021         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
1022                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
1023                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1024                                    current->comm);
1025                         mthca_warn(dev, "  Update libmthca to fix this.\n");
1026                 }
1027                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1028                 ucmd.mr_attrs = 0;
1029         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1030                 return ERR_PTR(-EFAULT);
1031
1032         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1033         if (!mr)
1034                 return ERR_PTR(-ENOMEM);
1035
1036         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1037                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1038
1039         if (IS_ERR(mr->umem)) {
1040                 err = PTR_ERR(mr->umem);
1041                 goto err;
1042         }
1043
1044         shift = ffs(mr->umem->page_size) - 1;
1045
1046         n = 0;
1047         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1048                 n += chunk->nents;
1049
1050         mr->mtt = mthca_alloc_mtt(dev, n);
1051         if (IS_ERR(mr->mtt)) {
1052                 err = PTR_ERR(mr->mtt);
1053                 goto err_umem;
1054         }
1055
1056         pages = (u64 *) __get_free_page(GFP_KERNEL);
1057         if (!pages) {
1058                 err = -ENOMEM;
1059                 goto err_mtt;
1060         }
1061
1062         i = n = 0;
1063
1064         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1065
1066         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1067                 for (j = 0; j < chunk->nmap; ++j) {
1068                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1069                         for (k = 0; k < len; ++k) {
1070                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1071                                         mr->umem->page_size * k;
1072                                 /*
1073                                  * Be friendly to write_mtt and pass it chunks
1074                                  * of appropriate size.
1075                                  */
1076                                 if (i == write_mtt_size) {
1077                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1078                                         if (err)
1079                                                 goto mtt_done;
1080                                         n += i;
1081                                         i = 0;
1082                                 }
1083                         }
1084                 }
1085
1086         if (i)
1087                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1088 mtt_done:
1089         free_page((unsigned long) pages);
1090         if (err)
1091                 goto err_mtt;
1092
1093         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1094                              convert_access(acc), mr);
1095
1096         if (err)
1097                 goto err_mtt;
1098
1099         return &mr->ibmr;
1100
1101 err_mtt:
1102         mthca_free_mtt(dev, mr->mtt);
1103
1104 err_umem:
1105         ib_umem_release(mr->umem);
1106
1107 err:
1108         kfree(mr);
1109         return ERR_PTR(err);
1110 }
1111
1112 static int mthca_dereg_mr(struct ib_mr *mr)
1113 {
1114         struct mthca_mr *mmr = to_mmr(mr);
1115
1116         mthca_free_mr(to_mdev(mr->device), mmr);
1117         if (mmr->umem)
1118                 ib_umem_release(mmr->umem);
1119         kfree(mmr);
1120
1121         return 0;
1122 }
1123
1124 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1125                                       struct ib_fmr_attr *fmr_attr)
1126 {
1127         struct mthca_fmr *fmr;
1128         int err;
1129
1130         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1131         if (!fmr)
1132                 return ERR_PTR(-ENOMEM);
1133
1134         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1135         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1136                              convert_access(mr_access_flags), fmr);
1137
1138         if (err) {
1139                 kfree(fmr);
1140                 return ERR_PTR(err);
1141         }
1142
1143         return &fmr->ibmr;
1144 }
1145
1146 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1147 {
1148         struct mthca_fmr *mfmr = to_mfmr(fmr);
1149         int err;
1150
1151         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1152         if (err)
1153                 return err;
1154
1155         kfree(mfmr);
1156         return 0;
1157 }
1158
1159 static int mthca_unmap_fmr(struct list_head *fmr_list)
1160 {
1161         struct ib_fmr *fmr;
1162         int err;
1163         u8 status;
1164         struct mthca_dev *mdev = NULL;
1165
1166         list_for_each_entry(fmr, fmr_list, list) {
1167                 if (mdev && to_mdev(fmr->device) != mdev)
1168                         return -EINVAL;
1169                 mdev = to_mdev(fmr->device);
1170         }
1171
1172         if (!mdev)
1173                 return 0;
1174
1175         if (mthca_is_memfree(mdev)) {
1176                 list_for_each_entry(fmr, fmr_list, list)
1177                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1178
1179                 wmb();
1180         } else
1181                 list_for_each_entry(fmr, fmr_list, list)
1182                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1183
1184         err = mthca_SYNC_TPT(mdev, &status);
1185         if (err)
1186                 return err;
1187         if (status)
1188                 return -EINVAL;
1189         return 0;
1190 }
1191
1192 static ssize_t show_rev(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, "%x\n", dev->rev_id);
1198 }
1199
1200 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1201                            char *buf)
1202 {
1203         struct mthca_dev *dev =
1204                 container_of(device, struct mthca_dev, ib_dev.dev);
1205         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1206                        (int) (dev->fw_ver >> 16) & 0xffff,
1207                        (int) dev->fw_ver & 0xffff);
1208 }
1209
1210 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1211                         char *buf)
1212 {
1213         struct mthca_dev *dev =
1214                 container_of(device, struct mthca_dev, ib_dev.dev);
1215         switch (dev->pdev->device) {
1216         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1217                 return sprintf(buf, "MT23108\n");
1218         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1219                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1220         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1221                 return sprintf(buf, "MT25208\n");
1222         case PCI_DEVICE_ID_MELLANOX_SINAI:
1223         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1224                 return sprintf(buf, "MT25204\n");
1225         default:
1226                 return sprintf(buf, "unknown\n");
1227         }
1228 }
1229
1230 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1231                           char *buf)
1232 {
1233         struct mthca_dev *dev =
1234                 container_of(device, struct mthca_dev, ib_dev.dev);
1235         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1236 }
1237
1238 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1239 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1240 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1241 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1242
1243 static struct device_attribute *mthca_dev_attributes[] = {
1244         &dev_attr_hw_rev,
1245         &dev_attr_fw_ver,
1246         &dev_attr_hca_type,
1247         &dev_attr_board_id
1248 };
1249
1250 static int mthca_init_node_data(struct mthca_dev *dev)
1251 {
1252         struct ib_smp *in_mad  = NULL;
1253         struct ib_smp *out_mad = NULL;
1254         int err = -ENOMEM;
1255         u8 status;
1256
1257         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1258         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1259         if (!in_mad || !out_mad)
1260                 goto out;
1261
1262         init_query_mad(in_mad);
1263         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1264
1265         err = mthca_MAD_IFC(dev, 1, 1,
1266                             1, NULL, NULL, in_mad, out_mad,
1267                             &status);
1268         if (err)
1269                 goto out;
1270         if (status) {
1271                 err = -EINVAL;
1272                 goto out;
1273         }
1274
1275         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1276
1277         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1278
1279         err = mthca_MAD_IFC(dev, 1, 1,
1280                             1, NULL, NULL, in_mad, out_mad,
1281                             &status);
1282         if (err)
1283                 goto out;
1284         if (status) {
1285                 err = -EINVAL;
1286                 goto out;
1287         }
1288
1289         if (mthca_is_memfree(dev))
1290                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1291         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1292
1293 out:
1294         kfree(in_mad);
1295         kfree(out_mad);
1296         return err;
1297 }
1298
1299 int mthca_register_device(struct mthca_dev *dev)
1300 {
1301         int ret;
1302         int i;
1303
1304         ret = mthca_init_node_data(dev);
1305         if (ret)
1306                 return ret;
1307
1308         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1309         dev->ib_dev.owner                = THIS_MODULE;
1310
1311         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1312         dev->ib_dev.uverbs_cmd_mask      =
1313                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1314                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1315                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1316                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1317                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1318                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1319                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1320                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1321                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1322                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1323                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1324                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1325                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1326                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1327                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1328                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1329                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1330         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1331         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1332         dev->ib_dev.num_comp_vectors     = 1;
1333         dev->ib_dev.dma_device           = &dev->pdev->dev;
1334         dev->ib_dev.query_device         = mthca_query_device;
1335         dev->ib_dev.query_port           = mthca_query_port;
1336         dev->ib_dev.modify_device        = mthca_modify_device;
1337         dev->ib_dev.modify_port          = mthca_modify_port;
1338         dev->ib_dev.query_pkey           = mthca_query_pkey;
1339         dev->ib_dev.query_gid            = mthca_query_gid;
1340         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1341         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1342         dev->ib_dev.mmap                 = mthca_mmap_uar;
1343         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1344         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1345         dev->ib_dev.create_ah            = mthca_ah_create;
1346         dev->ib_dev.query_ah             = mthca_ah_query;
1347         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1348
1349         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1350                 dev->ib_dev.create_srq           = mthca_create_srq;
1351                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1352                 dev->ib_dev.query_srq            = mthca_query_srq;
1353                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1354                 dev->ib_dev.uverbs_cmd_mask     |=
1355                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1356                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1357                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1358                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1359
1360                 if (mthca_is_memfree(dev))
1361                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1362                 else
1363                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1364         }
1365
1366         dev->ib_dev.create_qp            = mthca_create_qp;
1367         dev->ib_dev.modify_qp            = mthca_modify_qp;
1368         dev->ib_dev.query_qp             = mthca_query_qp;
1369         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1370         dev->ib_dev.create_cq            = mthca_create_cq;
1371         dev->ib_dev.resize_cq            = mthca_resize_cq;
1372         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1373         dev->ib_dev.poll_cq              = mthca_poll_cq;
1374         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1375         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1376         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1377         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1378
1379         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1380                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1381                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1382                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1383                 if (mthca_is_memfree(dev))
1384                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1385                 else
1386                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1387         }
1388
1389         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1390         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1391         dev->ib_dev.process_mad          = mthca_process_mad;
1392
1393         if (mthca_is_memfree(dev)) {
1394                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1395                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1396                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1397         } else {
1398                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1399                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1400                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1401         }
1402
1403         mutex_init(&dev->cap_mask_mutex);
1404
1405         ret = ib_register_device(&dev->ib_dev);
1406         if (ret)
1407                 return ret;
1408
1409         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1410                 ret = device_create_file(&dev->ib_dev.dev,
1411                                          mthca_dev_attributes[i]);
1412                 if (ret) {
1413                         ib_unregister_device(&dev->ib_dev);
1414                         return ret;
1415                 }
1416         }
1417
1418         mthca_start_catas_poll(dev);
1419
1420         return 0;
1421 }
1422
1423 void mthca_unregister_device(struct mthca_dev *dev)
1424 {
1425         mthca_stop_catas_poll(dev);
1426         ib_unregister_device(&dev->ib_dev);
1427 }