git.oblomov.eu Git - linux-2.6/blob - 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  * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
  37  */
  38
  39 #include <rdma/ib_smi.h>
  40 #include <rdma/ib_user_verbs.h>
  41 #include <linux/mm.h>
  42
  43 #include "mthca_dev.h"
  44 #include "mthca_cmd.h"
  45 #include "mthca_user.h"
  46 #include "mthca_memfree.h"
  47
  48 static void init_query_mad(struct ib_smp *mad)
  49 {
  50         mad->base_version  = 1;
  51         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  52         mad->class_version = 1;
  53         mad->method        = IB_MGMT_METHOD_GET;
  54 }
  55
  56 static int mthca_query_device(struct ib_device *ibdev,
  57                               struct ib_device_attr *props)
  58 {
  59         struct ib_smp *in_mad  = NULL;
  60         struct ib_smp *out_mad = NULL;
  61         int err = -ENOMEM;
  62         struct mthca_dev* mdev = to_mdev(ibdev);
  63
  64         u8 status;
  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                             &status);
  81         if (err)
  82                 goto out;
  83         if (status) {
  84                 err = -EINVAL;
  85                 goto out;
  86         }
  87
  88         props->device_cap_flags    = mdev->device_cap_flags;
  89         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  90                 0xffffff;
  91         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  92         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  93         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  94
  95         props->max_mr_size         = ~0ull;
  96         props->page_size_cap       = mdev->limits.page_size_cap;
  97         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  98         props->max_qp_wr           = mdev->limits.max_wqes;
  99         props->max_sge             = mdev->limits.max_sg;
 100         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 101         props->max_cqe             = mdev->limits.max_cqes;
 102         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 103         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 104         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 105         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 106         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 107         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 108         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 109         props->max_srq_sge         = mdev->limits.max_srq_sge;
 110         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 111         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 112                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 113         props->max_pkeys           = mdev->limits.pkey_table_len;
 114         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 115         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 116         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 117                                            props->max_mcast_grp;
 118
 119         err = 0;
 120  out:
 121         kfree(in_mad);
 122         kfree(out_mad);
 123         return err;
 124 }
 125
 126 static int mthca_query_port(struct ib_device *ibdev,
 127                             u8 port, struct ib_port_attr *props)
 128 {
 129         struct ib_smp *in_mad  = NULL;
 130         struct ib_smp *out_mad = NULL;
 131         int err = -ENOMEM;
 132         u8 status;
 133
 134         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 135         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 136         if (!in_mad || !out_mad)
 137                 goto out;
 138
 139         memset(props, 0, sizeof *props);
 140
 141         init_query_mad(in_mad);
 142         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 143         in_mad->attr_mod = cpu_to_be32(port);
 144
 145         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 146                             port, NULL, NULL, in_mad, out_mad,
 147                             &status);
 148         if (err)
 149                 goto out;
 150         if (status) {
 151                 err = -EINVAL;
 152                 goto out;
 153         }
 154
 155         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 156         props->lmc               = out_mad->data[34] & 0x7;
 157         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 158         props->sm_sl             = out_mad->data[36] & 0xf;
 159         props->state             = out_mad->data[32] & 0xf;
 160         props->phys_state        = out_mad->data[33] >> 4;
 161         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 162         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 163         props->max_msg_sz        = 0x80000000;
 164         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 165         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 166         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 167         props->active_width      = out_mad->data[31] & 0xf;
 168         props->active_speed      = out_mad->data[35] >> 4;
 169         props->max_mtu           = out_mad->data[41] & 0xf;
 170         props->active_mtu        = out_mad->data[36] >> 4;
 171         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 172
 173  out:
 174         kfree(in_mad);
 175         kfree(out_mad);
 176         return err;
 177 }
 178
 179 static int mthca_modify_device(struct ib_device *ibdev,
 180                                int mask,
 181                                struct ib_device_modify *props)
 182 {
 183         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 184                 return -EOPNOTSUPP;
 185
 186         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 187                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 188                         return -ERESTARTSYS;
 189                 memcpy(ibdev->node_desc, props->node_desc, 64);
 190                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 191         }
 192
 193         return 0;
 194 }
 195
 196 static int mthca_modify_port(struct ib_device *ibdev,
 197                              u8 port, int port_modify_mask,
 198                              struct ib_port_modify *props)
 199 {
 200         struct mthca_set_ib_param set_ib;
 201         struct ib_port_attr attr;
 202         int err;
 203         u8 status;
 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, &status);
 219         if (err)
 220                 goto out;
 221         if (status) {
 222                 err = -EINVAL;
 223                 goto out;
 224         }
 225
 226 out:
 227         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 228         return err;
 229 }
 230
 231 static int mthca_query_pkey(struct ib_device *ibdev,
 232                             u8 port, u16 index, u16 *pkey)
 233 {
 234         struct ib_smp *in_mad  = NULL;
 235         struct ib_smp *out_mad = NULL;
 236         int err = -ENOMEM;
 237         u8 status;
 238
 239         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 240         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 241         if (!in_mad || !out_mad)
 242                 goto out;
 243
 244         init_query_mad(in_mad);
 245         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 246         in_mad->attr_mod = cpu_to_be32(index / 32);
 247
 248         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 249                             port, NULL, NULL, in_mad, out_mad,
 250                             &status);
 251         if (err)
 252                 goto out;
 253         if (status) {
 254                 err = -EINVAL;
 255                 goto out;
 256         }
 257
 258         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 259
 260  out:
 261         kfree(in_mad);
 262         kfree(out_mad);
 263         return err;
 264 }
 265
 266 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 267                            int index, union ib_gid *gid)
 268 {
 269         struct ib_smp *in_mad  = NULL;
 270         struct ib_smp *out_mad = NULL;
 271         int err = -ENOMEM;
 272         u8 status;
 273
 274         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 275         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 276         if (!in_mad || !out_mad)
 277                 goto out;
 278
 279         init_query_mad(in_mad);
 280         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 281         in_mad->attr_mod = cpu_to_be32(port);
 282
 283         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 284                             port, NULL, NULL, in_mad, out_mad,
 285                             &status);
 286         if (err)
 287                 goto out;
 288         if (status) {
 289                 err = -EINVAL;
 290                 goto out;
 291         }
 292
 293         memcpy(gid->raw, out_mad->data + 8, 8);
 294
 295         init_query_mad(in_mad);
 296         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 297         in_mad->attr_mod = cpu_to_be32(index / 8);
 298
 299         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 300                             port, NULL, NULL, in_mad, out_mad,
 301                             &status);
 302         if (err)
 303                 goto out;
 304         if (status) {
 305                 err = -EINVAL;
 306                 goto out;
 307         }
 308
 309         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 16, 8);
 310
 311  out:
 312         kfree(in_mad);
 313         kfree(out_mad);
 314         return err;
 315 }
 316
 317 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 318                                                 struct ib_udata *udata)
 319 {
 320         struct mthca_alloc_ucontext_resp uresp;
 321         struct mthca_ucontext           *context;
 322         int                              err;
 323
 324         memset(&uresp, 0, sizeof uresp);
 325
 326         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 327         if (mthca_is_memfree(to_mdev(ibdev)))
 328                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 329         else
 330                 uresp.uarc_size = 0;
 331
 332         context = kmalloc(sizeof *context, GFP_KERNEL);
 333         if (!context)
 334                 return ERR_PTR(-ENOMEM);
 335
 336         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 337         if (err) {
 338                 kfree(context);
 339                 return ERR_PTR(err);
 340         }
 341
 342         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 343         if (IS_ERR(context->db_tab)) {
 344                 err = PTR_ERR(context->db_tab);
 345                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 346                 kfree(context);
 347                 return ERR_PTR(err);
 348         }
 349
 350         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 351                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 352                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 353                 kfree(context);
 354                 return ERR_PTR(-EFAULT);
 355         }
 356
 357         return &context->ibucontext;
 358 }
 359
 360 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 361 {
 362         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 363                                   to_mucontext(context)->db_tab);
 364         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 365         kfree(to_mucontext(context));
 366
 367         return 0;
 368 }
 369
 370 static int mthca_mmap_uar(struct ib_ucontext *context,
 371                           struct vm_area_struct *vma)
 372 {
 373         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 374                 return -EINVAL;
 375
 376         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 377
 378         if (io_remap_pfn_range(vma, vma->vm_start,
 379                                to_mucontext(context)->uar.pfn,
 380                                PAGE_SIZE, vma->vm_page_prot))
 381                 return -EAGAIN;
 382
 383         return 0;
 384 }
 385
 386 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 387                                     struct ib_ucontext *context,
 388                                     struct ib_udata *udata)
 389 {
 390         struct mthca_pd *pd;
 391         int err;
 392
 393         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 394         if (!pd)
 395                 return ERR_PTR(-ENOMEM);
 396
 397         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 398         if (err) {
 399                 kfree(pd);
 400                 return ERR_PTR(err);
 401         }
 402
 403         if (context) {
 404                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 405                         mthca_pd_free(to_mdev(ibdev), pd);
 406                         kfree(pd);
 407                         return ERR_PTR(-EFAULT);
 408                 }
 409         }
 410
 411         return &pd->ibpd;
 412 }
 413
 414 static int mthca_dealloc_pd(struct ib_pd *pd)
 415 {
 416         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 417         kfree(pd);
 418
 419         return 0;
 420 }
 421
 422 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 423                                      struct ib_ah_attr *ah_attr)
 424 {
 425         int err;
 426         struct mthca_ah *ah;
 427
 428         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 429         if (!ah)
 430                 return ERR_PTR(-ENOMEM);
 431
 432         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 433         if (err) {
 434                 kfree(ah);
 435                 return ERR_PTR(err);
 436         }
 437
 438         return &ah->ibah;
 439 }
 440
 441 static int mthca_ah_destroy(struct ib_ah *ah)
 442 {
 443         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 444         kfree(ah);
 445
 446         return 0;
 447 }
 448
 449 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 450                                        struct ib_srq_init_attr *init_attr,
 451                                        struct ib_udata *udata)
 452 {
 453         struct mthca_create_srq ucmd;
 454         struct mthca_ucontext *context = NULL;
 455         struct mthca_srq *srq;
 456         int err;
 457
 458         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 459         if (!srq)
 460                 return ERR_PTR(-ENOMEM);
 461
 462         if (pd->uobject) {
 463                 context = to_mucontext(pd->uobject->context);
 464
 465                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 466                         err = -EFAULT;
 467                         goto err_free;
 468                 }
 469
 470                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 471                                         context->db_tab, ucmd.db_index,
 472                                         ucmd.db_page);
 473
 474                 if (err)
 475                         goto err_free;
 476
 477                 srq->mr.ibmr.lkey = ucmd.lkey;
 478                 srq->db_index     = ucmd.db_index;
 479         }
 480
 481         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 482                               &init_attr->attr, srq);
 483
 484         if (err && pd->uobject)
 485                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 486                                     context->db_tab, ucmd.db_index);
 487
 488         if (err)
 489                 goto err_free;
 490
 491         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 492                 mthca_free_srq(to_mdev(pd->device), srq);
 493                 err = -EFAULT;
 494                 goto err_free;
 495         }
 496
 497         return &srq->ibsrq;
 498
 499 err_free:
 500         kfree(srq);
 501
 502         return ERR_PTR(err);
 503 }
 504
 505 static int mthca_destroy_srq(struct ib_srq *srq)
 506 {
 507         struct mthca_ucontext *context;
 508
 509         if (srq->uobject) {
 510                 context = to_mucontext(srq->uobject->context);
 511
 512                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 513                                     context->db_tab, to_msrq(srq)->db_index);
 514         }
 515
 516         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 517         kfree(srq);
 518
 519         return 0;
 520 }
 521
 522 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 523                                      struct ib_qp_init_attr *init_attr,
 524                                      struct ib_udata *udata)
 525 {
 526         struct mthca_create_qp ucmd;
 527         struct mthca_qp *qp;
 528         int err;
 529
 530         switch (init_attr->qp_type) {
 531         case IB_QPT_RC:
 532         case IB_QPT_UC:
 533         case IB_QPT_UD:
 534         {
 535                 struct mthca_ucontext *context;
 536
 537                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 538                 if (!qp)
 539                         return ERR_PTR(-ENOMEM);
 540
 541                 if (pd->uobject) {
 542                         context = to_mucontext(pd->uobject->context);
 543
 544                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 545                                 kfree(qp);
 546                                 return ERR_PTR(-EFAULT);
 547                         }
 548
 549                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 550                                                 context->db_tab,
 551                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 552                         if (err) {
 553                                 kfree(qp);
 554                                 return ERR_PTR(err);
 555                         }
 556
 557                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 558                                                 context->db_tab,
 559                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 560                         if (err) {
 561                                 mthca_unmap_user_db(to_mdev(pd->device),
 562                                                     &context->uar,
 563                                                     context->db_tab,
 564                                                     ucmd.sq_db_index);
 565                                 kfree(qp);
 566                                 return ERR_PTR(err);
 567                         }
 568
 569                         qp->mr.ibmr.lkey = ucmd.lkey;
 570                         qp->sq.db_index  = ucmd.sq_db_index;
 571                         qp->rq.db_index  = ucmd.rq_db_index;
 572                 }
 573
 574                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 575                                      to_mcq(init_attr->send_cq),
 576                                      to_mcq(init_attr->recv_cq),
 577                                      init_attr->qp_type, init_attr->sq_sig_type,
 578                                      &init_attr->cap, qp);
 579
 580                 if (err && pd->uobject) {
 581                         context = to_mucontext(pd->uobject->context);
 582
 583                         mthca_unmap_user_db(to_mdev(pd->device),
 584                                             &context->uar,
 585                                             context->db_tab,
 586                                             ucmd.sq_db_index);
 587                         mthca_unmap_user_db(to_mdev(pd->device),
 588                                             &context->uar,
 589                                             context->db_tab,
 590                                             ucmd.rq_db_index);
 591                 }
 592
 593                 qp->ibqp.qp_num = qp->qpn;
 594                 break;
 595         }
 596         case IB_QPT_SMI:
 597         case IB_QPT_GSI:
 598         {
 599                 /* Don't allow userspace to create special QPs */
 600                 if (pd->uobject)
 601                         return ERR_PTR(-EINVAL);
 602
 603                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 604                 if (!qp)
 605                         return ERR_PTR(-ENOMEM);
 606
 607                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 608
 609                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 610                                       to_mcq(init_attr->send_cq),
 611                                       to_mcq(init_attr->recv_cq),
 612                                       init_attr->sq_sig_type, &init_attr->cap,
 613                                       qp->ibqp.qp_num, init_attr->port_num,
 614                                       to_msqp(qp));
 615                 break;
 616         }
 617         default:
 618                 /* Don't support raw QPs */
 619                 return ERR_PTR(-ENOSYS);
 620         }
 621
 622         if (err) {
 623                 kfree(qp);
 624                 return ERR_PTR(err);
 625         }
 626
 627         init_attr->cap.max_send_wr     = qp->sq.max;
 628         init_attr->cap.max_recv_wr     = qp->rq.max;
 629         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 630         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 631         init_attr->cap.max_inline_data = qp->max_inline_data;
 632
 633         return &qp->ibqp;
 634 }
 635
 636 static int mthca_destroy_qp(struct ib_qp *qp)
 637 {
 638         if (qp->uobject) {
 639                 mthca_unmap_user_db(to_mdev(qp->device),
 640                                     &to_mucontext(qp->uobject->context)->uar,
 641                                     to_mucontext(qp->uobject->context)->db_tab,
 642                                     to_mqp(qp)->sq.db_index);
 643                 mthca_unmap_user_db(to_mdev(qp->device),
 644                                     &to_mucontext(qp->uobject->context)->uar,
 645                                     to_mucontext(qp->uobject->context)->db_tab,
 646                                     to_mqp(qp)->rq.db_index);
 647         }
 648         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 649         kfree(qp);
 650         return 0;
 651 }
 652
 653 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
 654                                      struct ib_ucontext *context,
 655                                      struct ib_udata *udata)
 656 {
 657         struct mthca_create_cq ucmd;
 658         struct mthca_cq *cq;
 659         int nent;
 660         int err;
 661
 662         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 663                 return ERR_PTR(-EINVAL);
 664
 665         if (context) {
 666                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 667                         return ERR_PTR(-EFAULT);
 668
 669                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 670                                         to_mucontext(context)->db_tab,
 671                                         ucmd.set_db_index, ucmd.set_db_page);
 672                 if (err)
 673                         return ERR_PTR(err);
 674
 675                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 676                                         to_mucontext(context)->db_tab,
 677                                         ucmd.arm_db_index, ucmd.arm_db_page);
 678                 if (err)
 679                         goto err_unmap_set;
 680         }
 681
 682         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 683         if (!cq) {
 684                 err = -ENOMEM;
 685                 goto err_unmap_arm;
 686         }
 687
 688         if (context) {
 689                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 690                 cq->set_ci_db_index  = ucmd.set_db_index;
 691                 cq->arm_db_index     = ucmd.arm_db_index;
 692         }
 693
 694         for (nent = 1; nent <= entries; nent <<= 1)
 695                 ; /* nothing */
 696
 697         err = mthca_init_cq(to_mdev(ibdev), nent,
 698                             context ? to_mucontext(context) : NULL,
 699                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 700                             cq);
 701         if (err)
 702                 goto err_free;
 703
 704         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 705                 mthca_free_cq(to_mdev(ibdev), cq);
 706                 goto err_free;
 707         }
 708
 709         cq->resize_buf = NULL;
 710
 711         return &cq->ibcq;
 712
 713 err_free:
 714         kfree(cq);
 715
 716 err_unmap_arm:
 717         if (context)
 718                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 719                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 720
 721 err_unmap_set:
 722         if (context)
 723                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 724                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 725
 726         return ERR_PTR(err);
 727 }
 728
 729 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 730                                   int entries)
 731 {
 732         int ret;
 733
 734         spin_lock_irq(&cq->lock);
 735         if (cq->resize_buf) {
 736                 ret = -EBUSY;
 737                 goto unlock;
 738         }
 739
 740         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 741         if (!cq->resize_buf) {
 742                 ret = -ENOMEM;
 743                 goto unlock;
 744         }
 745
 746         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 747
 748         ret = 0;
 749
 750 unlock:
 751         spin_unlock_irq(&cq->lock);
 752
 753         if (ret)
 754                 return ret;
 755
 756         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 757         if (ret) {
 758                 spin_lock_irq(&cq->lock);
 759                 kfree(cq->resize_buf);
 760                 cq->resize_buf = NULL;
 761                 spin_unlock_irq(&cq->lock);
 762                 return ret;
 763         }
 764
 765         cq->resize_buf->cqe = entries - 1;
 766
 767         spin_lock_irq(&cq->lock);
 768         cq->resize_buf->state = CQ_RESIZE_READY;
 769         spin_unlock_irq(&cq->lock);
 770
 771         return 0;
 772 }
 773
 774 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 775 {
 776         struct mthca_dev *dev = to_mdev(ibcq->device);
 777         struct mthca_cq *cq = to_mcq(ibcq);
 778         struct mthca_resize_cq ucmd;
 779         u32 lkey;
 780         u8 status;
 781         int ret;
 782
 783         if (entries < 1 || entries > dev->limits.max_cqes)
 784                 return -EINVAL;
 785
 786         entries = roundup_pow_of_two(entries + 1);
 787         if (entries == ibcq->cqe + 1)
 788                 return 0;
 789
 790         if (cq->is_kernel) {
 791                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 792                 if (ret)
 793                         return ret;
 794                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 795         } else {
 796                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 797                         return -EFAULT;
 798                 lkey = ucmd.lkey;
 799         }
 800
 801         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, long_log2(entries), &status);
 802         if (status)
 803                 ret = -EINVAL;
 804
 805         if (ret) {
 806                 if (cq->resize_buf) {
 807                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 808                                           cq->resize_buf->cqe);
 809                         kfree(cq->resize_buf);
 810                         spin_lock_irq(&cq->lock);
 811                         cq->resize_buf = NULL;
 812                         spin_unlock_irq(&cq->lock);
 813                 }
 814                 return ret;
 815         }
 816
 817         if (cq->is_kernel) {
 818                 struct mthca_cq_buf tbuf;
 819                 int tcqe;
 820
 821                 spin_lock_irq(&cq->lock);
 822                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 823                         mthca_cq_resize_copy_cqes(cq);
 824                         tbuf         = cq->buf;
 825                         tcqe         = cq->ibcq.cqe;
 826                         cq->buf      = cq->resize_buf->buf;
 827                         cq->ibcq.cqe = cq->resize_buf->cqe;
 828                 } else {
 829                         tbuf = cq->resize_buf->buf;
 830                         tcqe = cq->resize_buf->cqe;
 831                 }
 832
 833                 kfree(cq->resize_buf);
 834                 cq->resize_buf = NULL;
 835                 spin_unlock_irq(&cq->lock);
 836
 837                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 838         } else
 839                 ibcq->cqe = entries - 1;
 840
 841         return 0;
 842 }
 843
 844 static int mthca_destroy_cq(struct ib_cq *cq)
 845 {
 846         if (cq->uobject) {
 847                 mthca_unmap_user_db(to_mdev(cq->device),
 848                                     &to_mucontext(cq->uobject->context)->uar,
 849                                     to_mucontext(cq->uobject->context)->db_tab,
 850                                     to_mcq(cq)->arm_db_index);
 851                 mthca_unmap_user_db(to_mdev(cq->device),
 852                                     &to_mucontext(cq->uobject->context)->uar,
 853                                     to_mucontext(cq->uobject->context)->db_tab,
 854                                     to_mcq(cq)->set_ci_db_index);
 855         }
 856         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 857         kfree(cq);
 858
 859         return 0;
 860 }
 861
 862 static inline u32 convert_access(int acc)
 863 {
 864         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 865                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 866                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 867                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 868                MTHCA_MPT_FLAG_LOCAL_READ;
 869 }
 870
 871 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 872 {
 873         struct mthca_mr *mr;
 874         int err;
 875
 876         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 877         if (!mr)
 878                 return ERR_PTR(-ENOMEM);
 879
 880         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 881                                      to_mpd(pd)->pd_num,
 882                                      convert_access(acc), mr);
 883
 884         if (err) {
 885                 kfree(mr);
 886                 return ERR_PTR(err);
 887         }
 888
 889         return &mr->ibmr;
 890 }
 891
 892 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 893                                        struct ib_phys_buf *buffer_list,
 894                                        int                 num_phys_buf,
 895                                        int                 acc,
 896                                        u64                *iova_start)
 897 {
 898         struct mthca_mr *mr;
 899         u64 *page_list;
 900         u64 total_size;
 901         u64 mask;
 902         int shift;
 903         int npages;
 904         int err;
 905         int i, j, n;
 906
 907         /* First check that we have enough alignment */
 908         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
 909                 return ERR_PTR(-EINVAL);
 910
 911         mask = 0;
 912         total_size = 0;
 913         for (i = 0; i < num_phys_buf; ++i) {
 914                 if (i != 0)
 915                         mask |= buffer_list[i].addr;
 916                 if (i != num_phys_buf - 1)
 917                         mask |= buffer_list[i].addr + buffer_list[i].size;
 918
 919                 total_size += buffer_list[i].size;
 920         }
 921
 922         if (mask & ~PAGE_MASK)
 923                 return ERR_PTR(-EINVAL);
 924
 925         /* Find largest page shift we can use to cover buffers */
 926         for (shift = PAGE_SHIFT; shift < 31; ++shift)
 927                 if (num_phys_buf > 1) {
 928                         if ((1ULL << shift) & mask)
 929                                 break;
 930                 } else {
 931                         if (1ULL << shift >=
 932                             buffer_list[0].size +
 933                             (buffer_list[0].addr & ((1ULL << shift) - 1)))
 934                                 break;
 935                 }
 936
 937         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 938         buffer_list[0].addr &= ~0ull << shift;
 939
 940         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 941         if (!mr)
 942                 return ERR_PTR(-ENOMEM);
 943
 944         npages = 0;
 945         for (i = 0; i < num_phys_buf; ++i)
 946                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 947
 948         if (!npages)
 949                 return &mr->ibmr;
 950
 951         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 952         if (!page_list) {
 953                 kfree(mr);
 954                 return ERR_PTR(-ENOMEM);
 955         }
 956
 957         n = 0;
 958         for (i = 0; i < num_phys_buf; ++i)
 959                 for (j = 0;
 960                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 961                      ++j)
 962                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 963
 964         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 965                   "in PD %x; shift %d, npages %d.\n",
 966                   (unsigned long long) buffer_list[0].addr,
 967                   (unsigned long long) *iova_start,
 968                   to_mpd(pd)->pd_num,
 969                   shift, npages);
 970
 971         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 972                                   to_mpd(pd)->pd_num,
 973                                   page_list, shift, npages,
 974                                   *iova_start, total_size,
 975                                   convert_access(acc), mr);
 976
 977         if (err) {
 978                 kfree(page_list);
 979                 kfree(mr);
 980                 return ERR_PTR(err);
 981         }
 982
 983         kfree(page_list);
 984         return &mr->ibmr;
 985 }
 986
 987 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
 988                                        int acc, struct ib_udata *udata)
 989 {
 990         struct mthca_dev *dev = to_mdev(pd->device);
 991         struct ib_umem_chunk *chunk;
 992         struct mthca_mr *mr;
 993         u64 *pages;
 994         int shift, n, len;
 995         int i, j, k;
 996         int err = 0;
 997
 998         shift = ffs(region->page_size) - 1;
 999
1000         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1001         if (!mr)
1002                 return ERR_PTR(-ENOMEM);
1003
1004         n = 0;
1005         list_for_each_entry(chunk, &region->chunk_list, list)
1006                 n += chunk->nents;
1007
1008         mr->mtt = mthca_alloc_mtt(dev, n);
1009         if (IS_ERR(mr->mtt)) {
1010                 err = PTR_ERR(mr->mtt);
1011                 goto err;
1012         }
1013
1014         pages = (u64 *) __get_free_page(GFP_KERNEL);
1015         if (!pages) {
1016                 err = -ENOMEM;
1017                 goto err_mtt;
1018         }
1019
1020         i = n = 0;
1021
1022         list_for_each_entry(chunk, &region->chunk_list, list)
1023                 for (j = 0; j < chunk->nmap; ++j) {
1024                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1025                         for (k = 0; k < len; ++k) {
1026                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1027                                         region->page_size * k;
1028                                 /*
1029                                  * Be friendly to WRITE_MTT command
1030                                  * and leave two empty slots for the
1031                                  * index and reserved fields of the
1032                                  * mailbox.
1033                                  */
1034                                 if (i == PAGE_SIZE / sizeof (u64) - 2) {
1035                                         err = mthca_write_mtt(dev, mr->mtt,
1036                                                               n, pages, i);
1037                                         if (err)
1038                                                 goto mtt_done;
1039                                         n += i;
1040                                         i = 0;
1041                                 }
1042                         }
1043                 }
1044
1045         if (i)
1046                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1047 mtt_done:
1048         free_page((unsigned long) pages);
1049         if (err)
1050                 goto err_mtt;
1051
1052         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
1053                              region->length, convert_access(acc), mr);
1054
1055         if (err)
1056                 goto err_mtt;
1057
1058         return &mr->ibmr;
1059
1060 err_mtt:
1061         mthca_free_mtt(dev, mr->mtt);
1062
1063 err:
1064         kfree(mr);
1065         return ERR_PTR(err);
1066 }
1067
1068 static int mthca_dereg_mr(struct ib_mr *mr)
1069 {
1070         struct mthca_mr *mmr = to_mmr(mr);
1071         mthca_free_mr(to_mdev(mr->device), mmr);
1072         kfree(mmr);
1073         return 0;
1074 }
1075
1076 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1077                                       struct ib_fmr_attr *fmr_attr)
1078 {
1079         struct mthca_fmr *fmr;
1080         int err;
1081
1082         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1083         if (!fmr)
1084                 return ERR_PTR(-ENOMEM);
1085
1086         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1087         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1088                              convert_access(mr_access_flags), fmr);
1089
1090         if (err) {
1091                 kfree(fmr);
1092                 return ERR_PTR(err);
1093         }
1094
1095         return &fmr->ibmr;
1096 }
1097
1098 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1099 {
1100         struct mthca_fmr *mfmr = to_mfmr(fmr);
1101         int err;
1102
1103         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1104         if (err)
1105                 return err;
1106
1107         kfree(mfmr);
1108         return 0;
1109 }
1110
1111 static int mthca_unmap_fmr(struct list_head *fmr_list)
1112 {
1113         struct ib_fmr *fmr;
1114         int err;
1115         u8 status;
1116         struct mthca_dev *mdev = NULL;
1117
1118         list_for_each_entry(fmr, fmr_list, list) {
1119                 if (mdev && to_mdev(fmr->device) != mdev)
1120                         return -EINVAL;
1121                 mdev = to_mdev(fmr->device);
1122         }
1123
1124         if (!mdev)
1125                 return 0;
1126
1127         if (mthca_is_memfree(mdev)) {
1128                 list_for_each_entry(fmr, fmr_list, list)
1129                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1130
1131                 wmb();
1132         } else
1133                 list_for_each_entry(fmr, fmr_list, list)
1134                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1135
1136         err = mthca_SYNC_TPT(mdev, &status);
1137         if (err)
1138                 return err;
1139         if (status)
1140                 return -EINVAL;
1141         return 0;
1142 }
1143
1144 static ssize_t show_rev(struct class_device *cdev, char *buf)
1145 {
1146         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1147         return sprintf(buf, "%x\n", dev->rev_id);
1148 }
1149
1150 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1151 {
1152         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1153         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1154                        (int) (dev->fw_ver >> 16) & 0xffff,
1155                        (int) dev->fw_ver & 0xffff);
1156 }
1157
1158 static ssize_t show_hca(struct class_device *cdev, char *buf)
1159 {
1160         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1161         switch (dev->pdev->device) {
1162         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1163                 return sprintf(buf, "MT23108\n");
1164         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1165                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1166         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1167                 return sprintf(buf, "MT25208\n");
1168         case PCI_DEVICE_ID_MELLANOX_SINAI:
1169         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1170                 return sprintf(buf, "MT25204\n");
1171         default:
1172                 return sprintf(buf, "unknown\n");
1173         }
1174 }
1175
1176 static ssize_t show_board(struct class_device *cdev, char *buf)
1177 {
1178         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1179         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1180 }
1181
1182 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1183 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1184 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1185 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1186
1187 static struct class_device_attribute *mthca_class_attributes[] = {
1188         &class_device_attr_hw_rev,
1189         &class_device_attr_fw_ver,
1190         &class_device_attr_hca_type,
1191         &class_device_attr_board_id
1192 };
1193
1194 static int mthca_init_node_data(struct mthca_dev *dev)
1195 {
1196         struct ib_smp *in_mad  = NULL;
1197         struct ib_smp *out_mad = NULL;
1198         int err = -ENOMEM;
1199         u8 status;
1200
1201         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1202         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1203         if (!in_mad || !out_mad)
1204                 goto out;
1205
1206         init_query_mad(in_mad);
1207         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1208
1209         err = mthca_MAD_IFC(dev, 1, 1,
1210                             1, NULL, NULL, in_mad, out_mad,
1211                             &status);
1212         if (err)
1213                 goto out;
1214         if (status) {
1215                 err = -EINVAL;
1216                 goto out;
1217         }
1218
1219         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1220
1221         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1222
1223         err = mthca_MAD_IFC(dev, 1, 1,
1224                             1, NULL, NULL, in_mad, out_mad,
1225                             &status);
1226         if (err)
1227                 goto out;
1228         if (status) {
1229                 err = -EINVAL;
1230                 goto out;
1231         }
1232
1233         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1234
1235 out:
1236         kfree(in_mad);
1237         kfree(out_mad);
1238         return err;
1239 }
1240
1241 int mthca_register_device(struct mthca_dev *dev)
1242 {
1243         int ret;
1244         int i;
1245
1246         ret = mthca_init_node_data(dev);
1247         if (ret)
1248                 return ret;
1249
1250         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1251         dev->ib_dev.owner                = THIS_MODULE;
1252
1253         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1254         dev->ib_dev.uverbs_cmd_mask      =
1255                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1256                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1257                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1258                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1259                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1260                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1261                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1262                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1263                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1264                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1265                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1266                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1267                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1268                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1269                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1270                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1271                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
1272                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1273                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1274                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1275                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1276         dev->ib_dev.node_type            = IB_NODE_CA;
1277         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1278         dev->ib_dev.dma_device           = &dev->pdev->dev;
1279         dev->ib_dev.class_dev.dev        = &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
1301                 if (mthca_is_memfree(dev))
1302                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1303                 else
1304                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1305         }
1306
1307         dev->ib_dev.create_qp            = mthca_create_qp;
1308         dev->ib_dev.modify_qp            = mthca_modify_qp;
1309         dev->ib_dev.query_qp             = mthca_query_qp;
1310         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1311         dev->ib_dev.create_cq            = mthca_create_cq;
1312         dev->ib_dev.resize_cq            = mthca_resize_cq;
1313         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1314         dev->ib_dev.poll_cq              = mthca_poll_cq;
1315         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1316         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1317         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1318         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1319
1320         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1321                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1322                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1323                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1324                 if (mthca_is_memfree(dev))
1325                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1326                 else
1327                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1328         }
1329
1330         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1331         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1332         dev->ib_dev.process_mad          = mthca_process_mad;
1333
1334         if (mthca_is_memfree(dev)) {
1335                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1336                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1337                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1338         } else {
1339                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1340                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1341                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1342         }
1343
1344         mutex_init(&dev->cap_mask_mutex);
1345
1346         ret = ib_register_device(&dev->ib_dev);
1347         if (ret)
1348                 return ret;
1349
1350         for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1351                 ret = class_device_create_file(&dev->ib_dev.class_dev,
1352                                                mthca_class_attributes[i]);
1353                 if (ret) {
1354                         ib_unregister_device(&dev->ib_dev);
1355                         return ret;
1356                 }
1357         }
1358
1359         mthca_start_catas_poll(dev);
1360
1361         return 0;
1362 }
1363
1364 void mthca_unregister_device(struct mthca_dev *dev)
1365 {
1366         mthca_stop_catas_poll(dev);
1367         ib_unregister_device(&dev->ib_dev);
1368 }