drivers/infiniband/hw/mthca/mthca_provider.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
   7  *
   8  * This software is available to you under a choice of one of two
   9  * licenses.  You may choose to be licensed under the terms of the GNU
  10  * General Public License (GPL) Version 2, available from the file
  11  * COPYING in the main directory of this source tree, or the
  12  * OpenIB.org BSD license below:
  13  *
  14  *     Redistribution and use in source and binary forms, with or
  15  *     without modification, are permitted provided that the following
  16  *     conditions are met:
  17  *
  18  *      - Redistributions of source code must retain the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer.
  21  *
  22  *      - Redistributions in binary form must reproduce the above
  23  *        copyright notice, this list of conditions and the following
  24  *        disclaimer in the documentation and/or other materials
  25  *        provided with the distribution.
  26  *
  27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  34  * SOFTWARE.
  35  */
  36
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_umem.h>
  39 #include <rdma/ib_user_verbs.h>
  40
  41 #include <linux/sched.h>
  42 #include <linux/slab.h>
  43 #include <linux/stat.h>
  44 #include <linux/mm.h>
  45 #include <linux/export.h>
  46
  47 #include "mthca_dev.h"
  48 #include "mthca_cmd.h"
  49 #include <rdma/mthca-abi.h>
  50 #include "mthca_memfree.h"
  51
  52 static void init_query_mad(struct ib_smp *mad)
  53 {
  54         mad->base_version  = 1;
  55         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  56         mad->class_version = 1;
  57         mad->method        = IB_MGMT_METHOD_GET;
  58 }
  59
  60 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
  61                               struct ib_udata *uhw)
  62 {
  63         struct ib_smp *in_mad  = NULL;
  64         struct ib_smp *out_mad = NULL;
  65         int err = -ENOMEM;
  66         struct mthca_dev *mdev = to_mdev(ibdev);
  67
  68         if (uhw->inlen || uhw->outlen)
  69                 return -EINVAL;
  70
  71         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  72         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  73         if (!in_mad || !out_mad)
  74                 goto out;
  75
  76         memset(props, 0, sizeof *props);
  77
  78         props->fw_ver              = mdev->fw_ver;
  79
  80         init_query_mad(in_mad);
  81         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  82
  83         err = mthca_MAD_IFC(mdev, 1, 1,
  84                             1, NULL, NULL, in_mad, out_mad);
  85         if (err)
  86                 goto out;
  87
  88         props->device_cap_flags    = mdev->device_cap_flags;
  89         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  90                 0xffffff;
  91         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  92         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  93         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  94
  95         props->max_mr_size         = ~0ull;
  96         props->page_size_cap       = mdev->limits.page_size_cap;
  97         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  98         props->max_qp_wr           = mdev->limits.max_wqes;
  99         props->max_send_sge        = mdev->limits.max_sg;
 100         props->max_recv_sge        = mdev->limits.max_sg;
 101         props->max_sge_rd          = mdev->limits.max_sg;
 102         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 103         props->max_cqe             = mdev->limits.max_cqes;
 104         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 105         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 106         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 107         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 108         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 109         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 110         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 111         props->max_srq_sge         = mdev->limits.max_srq_sge;
 112         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 113         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 114                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 115         props->max_pkeys           = mdev->limits.pkey_table_len;
 116         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 117         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 118         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 119                                            props->max_mcast_grp;
 120         /*
 121          * If Sinai memory key optimization is being used, then only
 122          * the 8-bit key portion will change.  For other HCAs, the
 123          * unused index bits will also be used for FMR remapping.
 124          */
 125         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 126                 props->max_map_per_fmr = 255;
 127         else
 128                 props->max_map_per_fmr =
 129                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 130
 131         err = 0;
 132  out:
 133         kfree(in_mad);
 134         kfree(out_mad);
 135         return err;
 136 }
 137
 138 static int mthca_query_port(struct ib_device *ibdev,
 139                             u8 port, struct ib_port_attr *props)
 140 {
 141         struct ib_smp *in_mad  = NULL;
 142         struct ib_smp *out_mad = NULL;
 143         int err = -ENOMEM;
 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         /* props being zeroed by the caller, avoid zeroing it here */
 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         if (err)
 159                 goto out;
 160
 161         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 162         props->lmc               = out_mad->data[34] & 0x7;
 163         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 164         props->sm_sl             = out_mad->data[36] & 0xf;
 165         props->state             = out_mad->data[32] & 0xf;
 166         props->phys_state        = out_mad->data[33] >> 4;
 167         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 168         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 169         props->max_msg_sz        = 0x80000000;
 170         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 171         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 172         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 173         props->active_width      = out_mad->data[31] & 0xf;
 174         props->active_speed      = out_mad->data[35] >> 4;
 175         props->max_mtu           = out_mad->data[41] & 0xf;
 176         props->active_mtu        = out_mad->data[36] >> 4;
 177         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 178         props->max_vl_num        = out_mad->data[37] >> 4;
 179         props->init_type_reply   = out_mad->data[41] >> 4;
 180
 181  out:
 182         kfree(in_mad);
 183         kfree(out_mad);
 184         return err;
 185 }
 186
 187 static int mthca_modify_device(struct ib_device *ibdev,
 188                                int mask,
 189                                struct ib_device_modify *props)
 190 {
 191         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 192                 return -EOPNOTSUPP;
 193
 194         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 195                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 196                         return -ERESTARTSYS;
 197                 memcpy(ibdev->node_desc, props->node_desc,
 198                        IB_DEVICE_NODE_DESC_MAX);
 199                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 200         }
 201
 202         return 0;
 203 }
 204
 205 static int mthca_modify_port(struct ib_device *ibdev,
 206                              u8 port, int port_modify_mask,
 207                              struct ib_port_modify *props)
 208 {
 209         struct mthca_set_ib_param set_ib;
 210         struct ib_port_attr attr;
 211         int err;
 212
 213         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 214                 return -ERESTARTSYS;
 215
 216         err = ib_query_port(ibdev, port, &attr);
 217         if (err)
 218                 goto out;
 219
 220         set_ib.set_si_guid     = 0;
 221         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 222
 223         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 224                 ~props->clr_port_cap_mask;
 225
 226         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 227         if (err)
 228                 goto out;
 229 out:
 230         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 231         return err;
 232 }
 233
 234 static int mthca_query_pkey(struct ib_device *ibdev,
 235                             u8 port, u16 index, u16 *pkey)
 236 {
 237         struct ib_smp *in_mad  = NULL;
 238         struct ib_smp *out_mad = NULL;
 239         int err = -ENOMEM;
 240
 241         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 242         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 243         if (!in_mad || !out_mad)
 244                 goto out;
 245
 246         init_query_mad(in_mad);
 247         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 248         in_mad->attr_mod = cpu_to_be32(index / 32);
 249
 250         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 251                             port, NULL, NULL, in_mad, out_mad);
 252         if (err)
 253                 goto out;
 254
 255         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 256
 257  out:
 258         kfree(in_mad);
 259         kfree(out_mad);
 260         return err;
 261 }
 262
 263 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 264                            int index, union ib_gid *gid)
 265 {
 266         struct ib_smp *in_mad  = NULL;
 267         struct ib_smp *out_mad = NULL;
 268         int err = -ENOMEM;
 269
 270         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 271         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 272         if (!in_mad || !out_mad)
 273                 goto out;
 274
 275         init_query_mad(in_mad);
 276         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 277         in_mad->attr_mod = cpu_to_be32(port);
 278
 279         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 280                             port, NULL, NULL, in_mad, out_mad);
 281         if (err)
 282                 goto out;
 283
 284         memcpy(gid->raw, out_mad->data + 8, 8);
 285
 286         init_query_mad(in_mad);
 287         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 288         in_mad->attr_mod = cpu_to_be32(index / 8);
 289
 290         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 291                             port, NULL, NULL, in_mad, out_mad);
 292         if (err)
 293                 goto out;
 294
 295         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 296
 297  out:
 298         kfree(in_mad);
 299         kfree(out_mad);
 300         return err;
 301 }
 302
 303 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 304                                                 struct ib_udata *udata)
 305 {
 306         struct mthca_alloc_ucontext_resp uresp;
 307         struct mthca_ucontext           *context;
 308         int                              err;
 309
 310         if (!(to_mdev(ibdev)->active))
 311                 return ERR_PTR(-EAGAIN);
 312
 313         memset(&uresp, 0, sizeof uresp);
 314
 315         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 316         if (mthca_is_memfree(to_mdev(ibdev)))
 317                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 318         else
 319                 uresp.uarc_size = 0;
 320
 321         context = kmalloc(sizeof *context, GFP_KERNEL);
 322         if (!context)
 323                 return ERR_PTR(-ENOMEM);
 324
 325         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 326         if (err) {
 327                 kfree(context);
 328                 return ERR_PTR(err);
 329         }
 330
 331         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 332         if (IS_ERR(context->db_tab)) {
 333                 err = PTR_ERR(context->db_tab);
 334                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 335                 kfree(context);
 336                 return ERR_PTR(err);
 337         }
 338
 339         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 340                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 341                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 342                 kfree(context);
 343                 return ERR_PTR(-EFAULT);
 344         }
 345
 346         context->reg_mr_warned = 0;
 347
 348         return &context->ibucontext;
 349 }
 350
 351 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 352 {
 353         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 354                                   to_mucontext(context)->db_tab);
 355         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 356         kfree(to_mucontext(context));
 357
 358         return 0;
 359 }
 360
 361 static int mthca_mmap_uar(struct ib_ucontext *context,
 362                           struct vm_area_struct *vma)
 363 {
 364         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 365                 return -EINVAL;
 366
 367         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 368
 369         if (io_remap_pfn_range(vma, vma->vm_start,
 370                                to_mucontext(context)->uar.pfn,
 371                                PAGE_SIZE, vma->vm_page_prot))
 372                 return -EAGAIN;
 373
 374         return 0;
 375 }
 376
 377 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 378                                     struct ib_ucontext *context,
 379                                     struct ib_udata *udata)
 380 {
 381         struct mthca_pd *pd;
 382         int err;
 383
 384         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 385         if (!pd)
 386                 return ERR_PTR(-ENOMEM);
 387
 388         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 389         if (err) {
 390                 kfree(pd);
 391                 return ERR_PTR(err);
 392         }
 393
 394         if (context) {
 395                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 396                         mthca_pd_free(to_mdev(ibdev), pd);
 397                         kfree(pd);
 398                         return ERR_PTR(-EFAULT);
 399                 }
 400         }
 401
 402         return &pd->ibpd;
 403 }
 404
 405 static int mthca_dealloc_pd(struct ib_pd *pd)
 406 {
 407         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 408         kfree(pd);
 409
 410         return 0;
 411 }
 412
 413 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 414                                      struct rdma_ah_attr *ah_attr,
 415                                      struct ib_udata *udata)
 416
 417 {
 418         int err;
 419         struct mthca_ah *ah;
 420
 421         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 422         if (!ah)
 423                 return ERR_PTR(-ENOMEM);
 424
 425         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 426         if (err) {
 427                 kfree(ah);
 428                 return ERR_PTR(err);
 429         }
 430
 431         return &ah->ibah;
 432 }
 433
 434 static int mthca_ah_destroy(struct ib_ah *ah)
 435 {
 436         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 437         kfree(ah);
 438
 439         return 0;
 440 }
 441
 442 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 443                                        struct ib_srq_init_attr *init_attr,
 444                                        struct ib_udata *udata)
 445 {
 446         struct mthca_create_srq ucmd;
 447         struct mthca_ucontext *context = NULL;
 448         struct mthca_srq *srq;
 449         int err;
 450
 451         if (init_attr->srq_type != IB_SRQT_BASIC)
 452                 return ERR_PTR(-EOPNOTSUPP);
 453
 454         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 455         if (!srq)
 456                 return ERR_PTR(-ENOMEM);
 457
 458         if (pd->uobject) {
 459                 context = to_mucontext(pd->uobject->context);
 460
 461                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 462                         err = -EFAULT;
 463                         goto err_free;
 464                 }
 465
 466                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 467                                         context->db_tab, ucmd.db_index,
 468                                         ucmd.db_page);
 469
 470                 if (err)
 471                         goto err_free;
 472
 473                 srq->mr.ibmr.lkey = ucmd.lkey;
 474                 srq->db_index     = ucmd.db_index;
 475         }
 476
 477         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 478                               &init_attr->attr, srq);
 479
 480         if (err && pd->uobject)
 481                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 482                                     context->db_tab, ucmd.db_index);
 483
 484         if (err)
 485                 goto err_free;
 486
 487         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 488                 mthca_free_srq(to_mdev(pd->device), srq);
 489                 err = -EFAULT;
 490                 goto err_free;
 491         }
 492
 493         return &srq->ibsrq;
 494
 495 err_free:
 496         kfree(srq);
 497
 498         return ERR_PTR(err);
 499 }
 500
 501 static int mthca_destroy_srq(struct ib_srq *srq)
 502 {
 503         struct mthca_ucontext *context;
 504
 505         if (srq->uobject) {
 506                 context = to_mucontext(srq->uobject->context);
 507
 508                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 509                                     context->db_tab, to_msrq(srq)->db_index);
 510         }
 511
 512         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 513         kfree(srq);
 514
 515         return 0;
 516 }
 517
 518 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 519                                      struct ib_qp_init_attr *init_attr,
 520                                      struct ib_udata *udata)
 521 {
 522         struct mthca_create_qp ucmd;
 523         struct mthca_qp *qp;
 524         int err;
 525
 526         if (init_attr->create_flags)
 527                 return ERR_PTR(-EINVAL);
 528
 529         switch (init_attr->qp_type) {
 530         case IB_QPT_RC:
 531         case IB_QPT_UC:
 532         case IB_QPT_UD:
 533         {
 534                 struct mthca_ucontext *context;
 535
 536                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
 537                 if (!qp)
 538                         return ERR_PTR(-ENOMEM);
 539
 540                 if (pd->uobject) {
 541                         context = to_mucontext(pd->uobject->context);
 542
 543                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 544                                 kfree(qp);
 545                                 return ERR_PTR(-EFAULT);
 546                         }
 547
 548                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 549                                                 context->db_tab,
 550                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 551                         if (err) {
 552                                 kfree(qp);
 553                                 return ERR_PTR(err);
 554                         }
 555
 556                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 557                                                 context->db_tab,
 558                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 559                         if (err) {
 560                                 mthca_unmap_user_db(to_mdev(pd->device),
 561                                                     &context->uar,
 562                                                     context->db_tab,
 563                                                     ucmd.sq_db_index);
 564                                 kfree(qp);
 565                                 return ERR_PTR(err);
 566                         }
 567
 568                         qp->mr.ibmr.lkey = ucmd.lkey;
 569                         qp->sq.db_index  = ucmd.sq_db_index;
 570                         qp->rq.db_index  = ucmd.rq_db_index;
 571                 }
 572
 573                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 574                                      to_mcq(init_attr->send_cq),
 575                                      to_mcq(init_attr->recv_cq),
 576                                      init_attr->qp_type, init_attr->sq_sig_type,
 577                                      &init_attr->cap, qp);
 578
 579                 if (err && pd->uobject) {
 580                         context = to_mucontext(pd->uobject->context);
 581
 582                         mthca_unmap_user_db(to_mdev(pd->device),
 583                                             &context->uar,
 584                                             context->db_tab,
 585                                             ucmd.sq_db_index);
 586                         mthca_unmap_user_db(to_mdev(pd->device),
 587                                             &context->uar,
 588                                             context->db_tab,
 589                                             ucmd.rq_db_index);
 590                 }
 591
 592                 qp->ibqp.qp_num = qp->qpn;
 593                 break;
 594         }
 595         case IB_QPT_SMI:
 596         case IB_QPT_GSI:
 597         {
 598                 /* Don't allow userspace to create special QPs */
 599                 if (pd->uobject)
 600                         return ERR_PTR(-EINVAL);
 601
 602                 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
 603                 if (!qp)
 604                         return ERR_PTR(-ENOMEM);
 605
 606                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 607
 608                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 609                                       to_mcq(init_attr->send_cq),
 610                                       to_mcq(init_attr->recv_cq),
 611                                       init_attr->sq_sig_type, &init_attr->cap,
 612                                       qp->ibqp.qp_num, init_attr->port_num,
 613                                       to_msqp(qp));
 614                 break;
 615         }
 616         default:
 617                 /* Don't support raw QPs */
 618                 return ERR_PTR(-ENOSYS);
 619         }
 620
 621         if (err) {
 622                 kfree(qp);
 623                 return ERR_PTR(err);
 624         }
 625
 626         init_attr->cap.max_send_wr     = qp->sq.max;
 627         init_attr->cap.max_recv_wr     = qp->rq.max;
 628         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 629         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 630         init_attr->cap.max_inline_data = qp->max_inline_data;
 631
 632         return &qp->ibqp;
 633 }
 634
 635 static int mthca_destroy_qp(struct ib_qp *qp)
 636 {
 637         if (qp->uobject) {
 638                 mthca_unmap_user_db(to_mdev(qp->device),
 639                                     &to_mucontext(qp->uobject->context)->uar,
 640                                     to_mucontext(qp->uobject->context)->db_tab,
 641                                     to_mqp(qp)->sq.db_index);
 642                 mthca_unmap_user_db(to_mdev(qp->device),
 643                                     &to_mucontext(qp->uobject->context)->uar,
 644                                     to_mucontext(qp->uobject->context)->db_tab,
 645                                     to_mqp(qp)->rq.db_index);
 646         }
 647         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 648         kfree(qp);
 649         return 0;
 650 }
 651
 652 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 653                                      const struct ib_cq_init_attr *attr,
 654                                      struct ib_ucontext *context,
 655                                      struct ib_udata *udata)
 656 {
 657         int entries = attr->cqe;
 658         struct mthca_create_cq ucmd;
 659         struct mthca_cq *cq;
 660         int nent;
 661         int err;
 662
 663         if (attr->flags)
 664                 return ERR_PTR(-EINVAL);
 665
 666         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 667                 return ERR_PTR(-EINVAL);
 668
 669         if (context) {
 670                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 671                         return ERR_PTR(-EFAULT);
 672
 673                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 674                                         to_mucontext(context)->db_tab,
 675                                         ucmd.set_db_index, ucmd.set_db_page);
 676                 if (err)
 677                         return ERR_PTR(err);
 678
 679                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 680                                         to_mucontext(context)->db_tab,
 681                                         ucmd.arm_db_index, ucmd.arm_db_page);
 682                 if (err)
 683                         goto err_unmap_set;
 684         }
 685
 686         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 687         if (!cq) {
 688                 err = -ENOMEM;
 689                 goto err_unmap_arm;
 690         }
 691
 692         if (context) {
 693                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 694                 cq->set_ci_db_index  = ucmd.set_db_index;
 695                 cq->arm_db_index     = ucmd.arm_db_index;
 696         }
 697
 698         for (nent = 1; nent <= entries; nent <<= 1)
 699                 ; /* nothing */
 700
 701         err = mthca_init_cq(to_mdev(ibdev), nent,
 702                             context ? to_mucontext(context) : NULL,
 703                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 704                             cq);
 705         if (err)
 706                 goto err_free;
 707
 708         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 709                 mthca_free_cq(to_mdev(ibdev), cq);
 710                 err = -EFAULT;
 711                 goto err_free;
 712         }
 713
 714         cq->resize_buf = NULL;
 715
 716         return &cq->ibcq;
 717
 718 err_free:
 719         kfree(cq);
 720
 721 err_unmap_arm:
 722         if (context)
 723                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 724                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 725
 726 err_unmap_set:
 727         if (context)
 728                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 729                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 730
 731         return ERR_PTR(err);
 732 }
 733
 734 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 735                                   int entries)
 736 {
 737         int ret;
 738
 739         spin_lock_irq(&cq->lock);
 740         if (cq->resize_buf) {
 741                 ret = -EBUSY;
 742                 goto unlock;
 743         }
 744
 745         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 746         if (!cq->resize_buf) {
 747                 ret = -ENOMEM;
 748                 goto unlock;
 749         }
 750
 751         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 752
 753         ret = 0;
 754
 755 unlock:
 756         spin_unlock_irq(&cq->lock);
 757
 758         if (ret)
 759                 return ret;
 760
 761         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 762         if (ret) {
 763                 spin_lock_irq(&cq->lock);
 764                 kfree(cq->resize_buf);
 765                 cq->resize_buf = NULL;
 766                 spin_unlock_irq(&cq->lock);
 767                 return ret;
 768         }
 769
 770         cq->resize_buf->cqe = entries - 1;
 771
 772         spin_lock_irq(&cq->lock);
 773         cq->resize_buf->state = CQ_RESIZE_READY;
 774         spin_unlock_irq(&cq->lock);
 775
 776         return 0;
 777 }
 778
 779 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 780 {
 781         struct mthca_dev *dev = to_mdev(ibcq->device);
 782         struct mthca_cq *cq = to_mcq(ibcq);
 783         struct mthca_resize_cq ucmd;
 784         u32 lkey;
 785         int ret;
 786
 787         if (entries < 1 || entries > dev->limits.max_cqes)
 788                 return -EINVAL;
 789
 790         mutex_lock(&cq->mutex);
 791
 792         entries = roundup_pow_of_two(entries + 1);
 793         if (entries == ibcq->cqe + 1) {
 794                 ret = 0;
 795                 goto out;
 796         }
 797
 798         if (cq->is_kernel) {
 799                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 800                 if (ret)
 801                         goto out;
 802                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 803         } else {
 804                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 805                         ret = -EFAULT;
 806                         goto out;
 807                 }
 808                 lkey = ucmd.lkey;
 809         }
 810
 811         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 812
 813         if (ret) {
 814                 if (cq->resize_buf) {
 815                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 816                                           cq->resize_buf->cqe);
 817                         kfree(cq->resize_buf);
 818                         spin_lock_irq(&cq->lock);
 819                         cq->resize_buf = NULL;
 820                         spin_unlock_irq(&cq->lock);
 821                 }
 822                 goto out;
 823         }
 824
 825         if (cq->is_kernel) {
 826                 struct mthca_cq_buf tbuf;
 827                 int tcqe;
 828
 829                 spin_lock_irq(&cq->lock);
 830                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 831                         mthca_cq_resize_copy_cqes(cq);
 832                         tbuf         = cq->buf;
 833                         tcqe         = cq->ibcq.cqe;
 834                         cq->buf      = cq->resize_buf->buf;
 835                         cq->ibcq.cqe = cq->resize_buf->cqe;
 836                 } else {
 837                         tbuf = cq->resize_buf->buf;
 838                         tcqe = cq->resize_buf->cqe;
 839                 }
 840
 841                 kfree(cq->resize_buf);
 842                 cq->resize_buf = NULL;
 843                 spin_unlock_irq(&cq->lock);
 844
 845                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 846         } else
 847                 ibcq->cqe = entries - 1;
 848
 849 out:
 850         mutex_unlock(&cq->mutex);
 851
 852         return ret;
 853 }
 854
 855 static int mthca_destroy_cq(struct ib_cq *cq)
 856 {
 857         if (cq->uobject) {
 858                 mthca_unmap_user_db(to_mdev(cq->device),
 859                                     &to_mucontext(cq->uobject->context)->uar,
 860                                     to_mucontext(cq->uobject->context)->db_tab,
 861                                     to_mcq(cq)->arm_db_index);
 862                 mthca_unmap_user_db(to_mdev(cq->device),
 863                                     &to_mucontext(cq->uobject->context)->uar,
 864                                     to_mucontext(cq->uobject->context)->db_tab,
 865                                     to_mcq(cq)->set_ci_db_index);
 866         }
 867         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 868         kfree(cq);
 869
 870         return 0;
 871 }
 872
 873 static inline u32 convert_access(int acc)
 874 {
 875         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 876                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 877                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 878                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 879                MTHCA_MPT_FLAG_LOCAL_READ;
 880 }
 881
 882 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 883 {
 884         struct mthca_mr *mr;
 885         int err;
 886
 887         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 888         if (!mr)
 889                 return ERR_PTR(-ENOMEM);
 890
 891         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 892                                      to_mpd(pd)->pd_num,
 893                                      convert_access(acc), mr);
 894
 895         if (err) {
 896                 kfree(mr);
 897                 return ERR_PTR(err);
 898         }
 899
 900         mr->umem = NULL;
 901
 902         return &mr->ibmr;
 903 }
 904
 905 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 906                                        u64 virt, int acc, struct ib_udata *udata)
 907 {
 908         struct mthca_dev *dev = to_mdev(pd->device);
 909         struct scatterlist *sg;
 910         struct mthca_mr *mr;
 911         struct mthca_reg_mr ucmd;
 912         u64 *pages;
 913         int shift, n, len;
 914         int i, k, entry;
 915         int err = 0;
 916         int write_mtt_size;
 917
 918         if (udata->inlen < sizeof ucmd) {
 919                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
 920                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 921                                    current->comm);
 922                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 923                 }
 924                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
 925                 ucmd.mr_attrs = 0;
 926         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 927                 return ERR_PTR(-EFAULT);
 928
 929         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 930         if (!mr)
 931                 return ERR_PTR(-ENOMEM);
 932
 933         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
 934                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
 935
 936         if (IS_ERR(mr->umem)) {
 937                 err = PTR_ERR(mr->umem);
 938                 goto err;
 939         }
 940
 941         shift = mr->umem->page_shift;
 942         n = mr->umem->nmap;
 943
 944         mr->mtt = mthca_alloc_mtt(dev, n);
 945         if (IS_ERR(mr->mtt)) {
 946                 err = PTR_ERR(mr->mtt);
 947                 goto err_umem;
 948         }
 949
 950         pages = (u64 *) __get_free_page(GFP_KERNEL);
 951         if (!pages) {
 952                 err = -ENOMEM;
 953                 goto err_mtt;
 954         }
 955
 956         i = n = 0;
 957
 958         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
 959
 960         for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) {
 961                 len = sg_dma_len(sg) >> shift;
 962                 for (k = 0; k < len; ++k) {
 963                         pages[i++] = sg_dma_address(sg) + (k << shift);
 964                         /*
 965                          * Be friendly to write_mtt and pass it chunks
 966                          * of appropriate size.
 967                          */
 968                         if (i == write_mtt_size) {
 969                                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 970                                 if (err)
 971                                         goto mtt_done;
 972                                 n += i;
 973                                 i = 0;
 974                         }
 975                 }
 976         }
 977
 978         if (i)
 979                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 980 mtt_done:
 981         free_page((unsigned long) pages);
 982         if (err)
 983                 goto err_mtt;
 984
 985         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
 986                              convert_access(acc), mr);
 987
 988         if (err)
 989                 goto err_mtt;
 990
 991         return &mr->ibmr;
 992
 993 err_mtt:
 994         mthca_free_mtt(dev, mr->mtt);
 995
 996 err_umem:
 997         ib_umem_release(mr->umem);
 998
 999 err:
1000         kfree(mr);
1001         return ERR_PTR(err);
1002 }
1003
1004 static int mthca_dereg_mr(struct ib_mr *mr)
1005 {
1006         struct mthca_mr *mmr = to_mmr(mr);
1007
1008         mthca_free_mr(to_mdev(mr->device), mmr);
1009         if (mmr->umem)
1010                 ib_umem_release(mmr->umem);
1011         kfree(mmr);
1012
1013         return 0;
1014 }
1015
1016 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1017                                       struct ib_fmr_attr *fmr_attr)
1018 {
1019         struct mthca_fmr *fmr;
1020         int err;
1021
1022         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1023         if (!fmr)
1024                 return ERR_PTR(-ENOMEM);
1025
1026         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1027         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1028                              convert_access(mr_access_flags), fmr);
1029
1030         if (err) {
1031                 kfree(fmr);
1032                 return ERR_PTR(err);
1033         }
1034
1035         return &fmr->ibmr;
1036 }
1037
1038 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1039 {
1040         struct mthca_fmr *mfmr = to_mfmr(fmr);
1041         int err;
1042
1043         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1044         if (err)
1045                 return err;
1046
1047         kfree(mfmr);
1048         return 0;
1049 }
1050
1051 static int mthca_unmap_fmr(struct list_head *fmr_list)
1052 {
1053         struct ib_fmr *fmr;
1054         int err;
1055         struct mthca_dev *mdev = NULL;
1056
1057         list_for_each_entry(fmr, fmr_list, list) {
1058                 if (mdev && to_mdev(fmr->device) != mdev)
1059                         return -EINVAL;
1060                 mdev = to_mdev(fmr->device);
1061         }
1062
1063         if (!mdev)
1064                 return 0;
1065
1066         if (mthca_is_memfree(mdev)) {
1067                 list_for_each_entry(fmr, fmr_list, list)
1068                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1069
1070                 wmb();
1071         } else
1072                 list_for_each_entry(fmr, fmr_list, list)
1073                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1074
1075         err = mthca_SYNC_TPT(mdev);
1076         return err;
1077 }
1078
1079 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1080                         char *buf)
1081 {
1082         struct mthca_dev *dev =
1083                 container_of(device, struct mthca_dev, ib_dev.dev);
1084         return sprintf(buf, "%x\n", dev->rev_id);
1085 }
1086
1087 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1088                         char *buf)
1089 {
1090         struct mthca_dev *dev =
1091                 container_of(device, struct mthca_dev, ib_dev.dev);
1092         switch (dev->pdev->device) {
1093         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1094                 return sprintf(buf, "MT23108\n");
1095         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1096                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1097         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1098                 return sprintf(buf, "MT25208\n");
1099         case PCI_DEVICE_ID_MELLANOX_SINAI:
1100         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1101                 return sprintf(buf, "MT25204\n");
1102         default:
1103                 return sprintf(buf, "unknown\n");
1104         }
1105 }
1106
1107 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1108                           char *buf)
1109 {
1110         struct mthca_dev *dev =
1111                 container_of(device, struct mthca_dev, ib_dev.dev);
1112         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1113 }
1114
1115 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1116 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1117 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1118
1119 static struct device_attribute *mthca_dev_attributes[] = {
1120         &dev_attr_hw_rev,
1121         &dev_attr_hca_type,
1122         &dev_attr_board_id
1123 };
1124
1125 static int mthca_init_node_data(struct mthca_dev *dev)
1126 {
1127         struct ib_smp *in_mad  = NULL;
1128         struct ib_smp *out_mad = NULL;
1129         int err = -ENOMEM;
1130
1131         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1132         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1133         if (!in_mad || !out_mad)
1134                 goto out;
1135
1136         init_query_mad(in_mad);
1137         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1138
1139         err = mthca_MAD_IFC(dev, 1, 1,
1140                             1, NULL, NULL, in_mad, out_mad);
1141         if (err)
1142                 goto out;
1143
1144         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1145
1146         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1147
1148         err = mthca_MAD_IFC(dev, 1, 1,
1149                             1, NULL, NULL, in_mad, out_mad);
1150         if (err)
1151                 goto out;
1152
1153         if (mthca_is_memfree(dev))
1154                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1155         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1156
1157 out:
1158         kfree(in_mad);
1159         kfree(out_mad);
1160         return err;
1161 }
1162
1163 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1164                                 struct ib_port_immutable *immutable)
1165 {
1166         struct ib_port_attr attr;
1167         int err;
1168
1169         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1170
1171         err = ib_query_port(ibdev, port_num, &attr);
1172         if (err)
1173                 return err;
1174
1175         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1176         immutable->gid_tbl_len = attr.gid_tbl_len;
1177         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1178
1179         return 0;
1180 }
1181
1182 static void get_dev_fw_str(struct ib_device *device, char *str)
1183 {
1184         struct mthca_dev *dev =
1185                 container_of(device, struct mthca_dev, ib_dev);
1186         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1187                  (int) (dev->fw_ver >> 32),
1188                  (int) (dev->fw_ver >> 16) & 0xffff,
1189                  (int) dev->fw_ver & 0xffff);
1190 }
1191
1192 int mthca_register_device(struct mthca_dev *dev)
1193 {
1194         int ret;
1195         int i;
1196
1197         ret = mthca_init_node_data(dev);
1198         if (ret)
1199                 return ret;
1200
1201         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1202         dev->ib_dev.owner                = THIS_MODULE;
1203
1204         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1205         dev->ib_dev.uverbs_cmd_mask      =
1206                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1207                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1208                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1209                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1210                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1211                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1212                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1213                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1214                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1215                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1216                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1217                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1218                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1219                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1220                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1221                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1222                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1223         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1224         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1225         dev->ib_dev.num_comp_vectors     = 1;
1226         dev->ib_dev.dev.parent           = &dev->pdev->dev;
1227         dev->ib_dev.query_device         = mthca_query_device;
1228         dev->ib_dev.query_port           = mthca_query_port;
1229         dev->ib_dev.modify_device        = mthca_modify_device;
1230         dev->ib_dev.modify_port          = mthca_modify_port;
1231         dev->ib_dev.query_pkey           = mthca_query_pkey;
1232         dev->ib_dev.query_gid            = mthca_query_gid;
1233         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1234         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1235         dev->ib_dev.mmap                 = mthca_mmap_uar;
1236         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1237         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1238         dev->ib_dev.create_ah            = mthca_ah_create;
1239         dev->ib_dev.query_ah             = mthca_ah_query;
1240         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1241
1242         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1243                 dev->ib_dev.create_srq           = mthca_create_srq;
1244                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1245                 dev->ib_dev.query_srq            = mthca_query_srq;
1246                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1247                 dev->ib_dev.uverbs_cmd_mask     |=
1248                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1249                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1250                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1251                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1252
1253                 if (mthca_is_memfree(dev))
1254                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1255                 else
1256                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1257         }
1258
1259         dev->ib_dev.create_qp            = mthca_create_qp;
1260         dev->ib_dev.modify_qp            = mthca_modify_qp;
1261         dev->ib_dev.query_qp             = mthca_query_qp;
1262         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1263         dev->ib_dev.create_cq            = mthca_create_cq;
1264         dev->ib_dev.resize_cq            = mthca_resize_cq;
1265         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1266         dev->ib_dev.poll_cq              = mthca_poll_cq;
1267         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1268         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1269         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1270         dev->ib_dev.get_port_immutable   = mthca_port_immutable;
1271         dev->ib_dev.get_dev_fw_str       = get_dev_fw_str;
1272
1273         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1274                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1275                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1276                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1277                 if (mthca_is_memfree(dev))
1278                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1279                 else
1280                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1281         }
1282
1283         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1284         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1285         dev->ib_dev.process_mad          = mthca_process_mad;
1286
1287         if (mthca_is_memfree(dev)) {
1288                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1289                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1290                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1291         } else {
1292                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1293                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1294                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1295         }
1296
1297         mutex_init(&dev->cap_mask_mutex);
1298
1299         dev->ib_dev.driver_id = RDMA_DRIVER_MTHCA;
1300         ret = ib_register_device(&dev->ib_dev, NULL);
1301         if (ret)
1302                 return ret;
1303
1304         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1305                 ret = device_create_file(&dev->ib_dev.dev,
1306                                          mthca_dev_attributes[i]);
1307                 if (ret) {
1308                         ib_unregister_device(&dev->ib_dev);
1309                         return ret;
1310                 }
1311         }
1312
1313         mthca_start_catas_poll(dev);
1314
1315         return 0;
1316 }
1317
1318 void mthca_unregister_device(struct mthca_dev *dev)
1319 {
1320         mthca_stop_catas_poll(dev);
1321         ib_unregister_device(&dev->ib_dev);
1322 }