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 #include <rdma/uverbs_ioctl.h>
  41
  42 #include <linux/sched.h>
  43 #include <linux/slab.h>
  44 #include <linux/stat.h>
  45 #include <linux/mm.h>
  46 #include <linux/export.h>
  47
  48 #include "mthca_dev.h"
  49 #include "mthca_cmd.h"
  50 #include <rdma/mthca-abi.h>
  51 #include "mthca_memfree.h"
  52
  53 static void init_query_mad(struct ib_smp *mad)
  54 {
  55         mad->base_version  = 1;
  56         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  57         mad->class_version = 1;
  58         mad->method        = IB_MGMT_METHOD_GET;
  59 }
  60
  61 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
  62                               struct ib_udata *uhw)
  63 {
  64         struct ib_smp *in_mad  = NULL;
  65         struct ib_smp *out_mad = NULL;
  66         int err = -ENOMEM;
  67         struct mthca_dev *mdev = to_mdev(ibdev);
  68
  69         if (uhw->inlen || uhw->outlen)
  70                 return -EINVAL;
  71
  72         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  73         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  74         if (!in_mad || !out_mad)
  75                 goto out;
  76
  77         memset(props, 0, sizeof *props);
  78
  79         props->fw_ver              = mdev->fw_ver;
  80
  81         init_query_mad(in_mad);
  82         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  83
  84         err = mthca_MAD_IFC(mdev, 1, 1,
  85                             1, NULL, NULL, in_mad, out_mad);
  86         if (err)
  87                 goto out;
  88
  89         props->device_cap_flags    = mdev->device_cap_flags;
  90         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  91                 0xffffff;
  92         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  93         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  94         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  95
  96         props->max_mr_size         = ~0ull;
  97         props->page_size_cap       = mdev->limits.page_size_cap;
  98         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  99         props->max_qp_wr           = mdev->limits.max_wqes;
 100         props->max_send_sge        = mdev->limits.max_sg;
 101         props->max_recv_sge        = mdev->limits.max_sg;
 102         props->max_sge_rd          = mdev->limits.max_sg;
 103         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 104         props->max_cqe             = mdev->limits.max_cqes;
 105         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 106         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 107         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 108         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 109         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 110         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 111         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 112         props->max_srq_sge         = mdev->limits.max_srq_sge;
 113         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 114         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 115                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 116         props->max_pkeys           = mdev->limits.pkey_table_len;
 117         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 118         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 119         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 120                                            props->max_mcast_grp;
 121         /*
 122          * If Sinai memory key optimization is being used, then only
 123          * the 8-bit key portion will change.  For other HCAs, the
 124          * unused index bits will also be used for FMR remapping.
 125          */
 126         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 127                 props->max_map_per_fmr = 255;
 128         else
 129                 props->max_map_per_fmr =
 130                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 131
 132         err = 0;
 133  out:
 134         kfree(in_mad);
 135         kfree(out_mad);
 136         return err;
 137 }
 138
 139 static int mthca_query_port(struct ib_device *ibdev,
 140                             u8 port, struct ib_port_attr *props)
 141 {
 142         struct ib_smp *in_mad  = NULL;
 143         struct ib_smp *out_mad = NULL;
 144         int err = -ENOMEM;
 145
 146         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 147         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 148         if (!in_mad || !out_mad)
 149                 goto out;
 150
 151         /* props being zeroed by the caller, avoid zeroing it here */
 152
 153         init_query_mad(in_mad);
 154         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 155         in_mad->attr_mod = cpu_to_be32(port);
 156
 157         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 158                             port, NULL, NULL, in_mad, out_mad);
 159         if (err)
 160                 goto out;
 161
 162         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 163         props->lmc               = out_mad->data[34] & 0x7;
 164         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 165         props->sm_sl             = out_mad->data[36] & 0xf;
 166         props->state             = out_mad->data[32] & 0xf;
 167         props->phys_state        = out_mad->data[33] >> 4;
 168         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 169         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 170         props->max_msg_sz        = 0x80000000;
 171         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 172         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 173         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 174         props->active_width      = out_mad->data[31] & 0xf;
 175         props->active_speed      = out_mad->data[35] >> 4;
 176         props->max_mtu           = out_mad->data[41] & 0xf;
 177         props->active_mtu        = out_mad->data[36] >> 4;
 178         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 179         props->max_vl_num        = out_mad->data[37] >> 4;
 180         props->init_type_reply   = out_mad->data[41] >> 4;
 181
 182  out:
 183         kfree(in_mad);
 184         kfree(out_mad);
 185         return err;
 186 }
 187
 188 static int mthca_modify_device(struct ib_device *ibdev,
 189                                int mask,
 190                                struct ib_device_modify *props)
 191 {
 192         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 193                 return -EOPNOTSUPP;
 194
 195         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 196                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 197                         return -ERESTARTSYS;
 198                 memcpy(ibdev->node_desc, props->node_desc,
 199                        IB_DEVICE_NODE_DESC_MAX);
 200                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 201         }
 202
 203         return 0;
 204 }
 205
 206 static int mthca_modify_port(struct ib_device *ibdev,
 207                              u8 port, int port_modify_mask,
 208                              struct ib_port_modify *props)
 209 {
 210         struct mthca_set_ib_param set_ib;
 211         struct ib_port_attr attr;
 212         int err;
 213
 214         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 215                 return -ERESTARTSYS;
 216
 217         err = ib_query_port(ibdev, port, &attr);
 218         if (err)
 219                 goto out;
 220
 221         set_ib.set_si_guid     = 0;
 222         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 223
 224         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 225                 ~props->clr_port_cap_mask;
 226
 227         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 228         if (err)
 229                 goto out;
 230 out:
 231         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 232         return err;
 233 }
 234
 235 static int mthca_query_pkey(struct ib_device *ibdev,
 236                             u8 port, u16 index, u16 *pkey)
 237 {
 238         struct ib_smp *in_mad  = NULL;
 239         struct ib_smp *out_mad = NULL;
 240         int err = -ENOMEM;
 241
 242         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 243         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 244         if (!in_mad || !out_mad)
 245                 goto out;
 246
 247         init_query_mad(in_mad);
 248         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 249         in_mad->attr_mod = cpu_to_be32(index / 32);
 250
 251         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 252                             port, NULL, NULL, in_mad, out_mad);
 253         if (err)
 254                 goto out;
 255
 256         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 257
 258  out:
 259         kfree(in_mad);
 260         kfree(out_mad);
 261         return err;
 262 }
 263
 264 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 265                            int index, union ib_gid *gid)
 266 {
 267         struct ib_smp *in_mad  = NULL;
 268         struct ib_smp *out_mad = NULL;
 269         int err = -ENOMEM;
 270
 271         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 272         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 273         if (!in_mad || !out_mad)
 274                 goto out;
 275
 276         init_query_mad(in_mad);
 277         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 278         in_mad->attr_mod = cpu_to_be32(port);
 279
 280         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 281                             port, NULL, NULL, in_mad, out_mad);
 282         if (err)
 283                 goto out;
 284
 285         memcpy(gid->raw, out_mad->data + 8, 8);
 286
 287         init_query_mad(in_mad);
 288         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 289         in_mad->attr_mod = cpu_to_be32(index / 8);
 290
 291         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 292                             port, NULL, NULL, in_mad, out_mad);
 293         if (err)
 294                 goto out;
 295
 296         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 297
 298  out:
 299         kfree(in_mad);
 300         kfree(out_mad);
 301         return err;
 302 }
 303
 304 static int mthca_alloc_ucontext(struct ib_ucontext *uctx,
 305                                 struct ib_udata *udata)
 306 {
 307         struct ib_device *ibdev = uctx->device;
 308         struct mthca_alloc_ucontext_resp uresp = {};
 309         struct mthca_ucontext *context = to_mucontext(uctx);
 310         int                              err;
 311
 312         if (!(to_mdev(ibdev)->active))
 313                 return -EAGAIN;
 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         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 322         if (err)
 323                 return err;
 324
 325         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 326         if (IS_ERR(context->db_tab)) {
 327                 err = PTR_ERR(context->db_tab);
 328                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 329                 return err;
 330         }
 331
 332         if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 333                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 334                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 335                 return -EFAULT;
 336         }
 337
 338         context->reg_mr_warned = 0;
 339
 340         return 0;
 341 }
 342
 343 static void mthca_dealloc_ucontext(struct ib_ucontext *context)
 344 {
 345         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 346                                   to_mucontext(context)->db_tab);
 347         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 348 }
 349
 350 static int mthca_mmap_uar(struct ib_ucontext *context,
 351                           struct vm_area_struct *vma)
 352 {
 353         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 354                 return -EINVAL;
 355
 356         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 357
 358         if (io_remap_pfn_range(vma, vma->vm_start,
 359                                to_mucontext(context)->uar.pfn,
 360                                PAGE_SIZE, vma->vm_page_prot))
 361                 return -EAGAIN;
 362
 363         return 0;
 364 }
 365
 366 static int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context,
 367                           struct ib_udata *udata)
 368 {
 369         struct ib_device *ibdev = ibpd->device;
 370         struct mthca_pd *pd = to_mpd(ibpd);
 371         int err;
 372
 373         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 374         if (err)
 375                 return err;
 376
 377         if (context) {
 378                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 379                         mthca_pd_free(to_mdev(ibdev), pd);
 380                         return -EFAULT;
 381                 }
 382         }
 383
 384         return 0;
 385 }
 386
 387 static void mthca_dealloc_pd(struct ib_pd *pd)
 388 {
 389         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 390 }
 391
 392 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 393                                      struct rdma_ah_attr *ah_attr,
 394                                      u32 flags,
 395                                      struct ib_udata *udata)
 396
 397 {
 398         int err;
 399         struct mthca_ah *ah;
 400
 401         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 402         if (!ah)
 403                 return ERR_PTR(-ENOMEM);
 404
 405         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 406         if (err) {
 407                 kfree(ah);
 408                 return ERR_PTR(err);
 409         }
 410
 411         return &ah->ibah;
 412 }
 413
 414 static int mthca_ah_destroy(struct ib_ah *ah, u32 flags)
 415 {
 416         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 417         kfree(ah);
 418
 419         return 0;
 420 }
 421
 422 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 423                                        struct ib_srq_init_attr *init_attr,
 424                                        struct ib_udata *udata)
 425 {
 426         struct mthca_create_srq ucmd;
 427         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 428                 udata, struct mthca_ucontext, ibucontext);
 429         struct mthca_srq *srq;
 430         int err;
 431
 432         if (init_attr->srq_type != IB_SRQT_BASIC)
 433                 return ERR_PTR(-EOPNOTSUPP);
 434
 435         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 436         if (!srq)
 437                 return ERR_PTR(-ENOMEM);
 438
 439         if (udata) {
 440                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 441                         err = -EFAULT;
 442                         goto err_free;
 443                 }
 444
 445                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 446                                         context->db_tab, ucmd.db_index,
 447                                         ucmd.db_page);
 448
 449                 if (err)
 450                         goto err_free;
 451
 452                 srq->mr.ibmr.lkey = ucmd.lkey;
 453                 srq->db_index     = ucmd.db_index;
 454         }
 455
 456         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 457                               &init_attr->attr, srq, udata);
 458
 459         if (err && udata)
 460                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 461                                     context->db_tab, ucmd.db_index);
 462
 463         if (err)
 464                 goto err_free;
 465
 466         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 467                 mthca_free_srq(to_mdev(pd->device), srq);
 468                 err = -EFAULT;
 469                 goto err_free;
 470         }
 471
 472         return &srq->ibsrq;
 473
 474 err_free:
 475         kfree(srq);
 476
 477         return ERR_PTR(err);
 478 }
 479
 480 static int mthca_destroy_srq(struct ib_srq *srq)
 481 {
 482         struct mthca_ucontext *context;
 483
 484         if (srq->uobject) {
 485                 context = to_mucontext(srq->uobject->context);
 486
 487                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 488                                     context->db_tab, to_msrq(srq)->db_index);
 489         }
 490
 491         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 492         kfree(srq);
 493
 494         return 0;
 495 }
 496
 497 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 498                                      struct ib_qp_init_attr *init_attr,
 499                                      struct ib_udata *udata)
 500 {
 501         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 502                 udata, struct mthca_ucontext, ibucontext);
 503         struct mthca_create_qp ucmd;
 504         struct mthca_qp *qp;
 505         int err;
 506
 507         if (init_attr->create_flags)
 508                 return ERR_PTR(-EINVAL);
 509
 510         switch (init_attr->qp_type) {
 511         case IB_QPT_RC:
 512         case IB_QPT_UC:
 513         case IB_QPT_UD:
 514         {
 515                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
 516                 if (!qp)
 517                         return ERR_PTR(-ENOMEM);
 518
 519                 if (udata) {
 520                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 521                                 kfree(qp);
 522                                 return ERR_PTR(-EFAULT);
 523                         }
 524
 525                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 526                                                 context->db_tab,
 527                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 528                         if (err) {
 529                                 kfree(qp);
 530                                 return ERR_PTR(err);
 531                         }
 532
 533                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 534                                                 context->db_tab,
 535                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 536                         if (err) {
 537                                 mthca_unmap_user_db(to_mdev(pd->device),
 538                                                     &context->uar,
 539                                                     context->db_tab,
 540                                                     ucmd.sq_db_index);
 541                                 kfree(qp);
 542                                 return ERR_PTR(err);
 543                         }
 544
 545                         qp->mr.ibmr.lkey = ucmd.lkey;
 546                         qp->sq.db_index  = ucmd.sq_db_index;
 547                         qp->rq.db_index  = ucmd.rq_db_index;
 548                 }
 549
 550                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 551                                      to_mcq(init_attr->send_cq),
 552                                      to_mcq(init_attr->recv_cq),
 553                                      init_attr->qp_type, init_attr->sq_sig_type,
 554                                      &init_attr->cap, qp, udata);
 555
 556                 if (err && udata) {
 557                         mthca_unmap_user_db(to_mdev(pd->device),
 558                                             &context->uar,
 559                                             context->db_tab,
 560                                             ucmd.sq_db_index);
 561                         mthca_unmap_user_db(to_mdev(pd->device),
 562                                             &context->uar,
 563                                             context->db_tab,
 564                                             ucmd.rq_db_index);
 565                 }
 566
 567                 qp->ibqp.qp_num = qp->qpn;
 568                 break;
 569         }
 570         case IB_QPT_SMI:
 571         case IB_QPT_GSI:
 572         {
 573                 /* Don't allow userspace to create special QPs */
 574                 if (udata)
 575                         return ERR_PTR(-EINVAL);
 576
 577                 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
 578                 if (!qp)
 579                         return ERR_PTR(-ENOMEM);
 580
 581                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 582
 583                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 584                                       to_mcq(init_attr->send_cq),
 585                                       to_mcq(init_attr->recv_cq),
 586                                       init_attr->sq_sig_type, &init_attr->cap,
 587                                       qp->ibqp.qp_num, init_attr->port_num,
 588                                       to_msqp(qp), udata);
 589                 break;
 590         }
 591         default:
 592                 /* Don't support raw QPs */
 593                 return ERR_PTR(-ENOSYS);
 594         }
 595
 596         if (err) {
 597                 kfree(qp);
 598                 return ERR_PTR(err);
 599         }
 600
 601         init_attr->cap.max_send_wr     = qp->sq.max;
 602         init_attr->cap.max_recv_wr     = qp->rq.max;
 603         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 604         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 605         init_attr->cap.max_inline_data = qp->max_inline_data;
 606
 607         return &qp->ibqp;
 608 }
 609
 610 static int mthca_destroy_qp(struct ib_qp *qp)
 611 {
 612         if (qp->uobject) {
 613                 mthca_unmap_user_db(to_mdev(qp->device),
 614                                     &to_mucontext(qp->uobject->context)->uar,
 615                                     to_mucontext(qp->uobject->context)->db_tab,
 616                                     to_mqp(qp)->sq.db_index);
 617                 mthca_unmap_user_db(to_mdev(qp->device),
 618                                     &to_mucontext(qp->uobject->context)->uar,
 619                                     to_mucontext(qp->uobject->context)->db_tab,
 620                                     to_mqp(qp)->rq.db_index);
 621         }
 622         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 623         kfree(qp);
 624         return 0;
 625 }
 626
 627 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 628                                      const struct ib_cq_init_attr *attr,
 629                                      struct ib_ucontext *context,
 630                                      struct ib_udata *udata)
 631 {
 632         int entries = attr->cqe;
 633         struct mthca_create_cq ucmd;
 634         struct mthca_cq *cq;
 635         int nent;
 636         int err;
 637
 638         if (attr->flags)
 639                 return ERR_PTR(-EINVAL);
 640
 641         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 642                 return ERR_PTR(-EINVAL);
 643
 644         if (context) {
 645                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 646                         return ERR_PTR(-EFAULT);
 647
 648                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 649                                         to_mucontext(context)->db_tab,
 650                                         ucmd.set_db_index, ucmd.set_db_page);
 651                 if (err)
 652                         return ERR_PTR(err);
 653
 654                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 655                                         to_mucontext(context)->db_tab,
 656                                         ucmd.arm_db_index, ucmd.arm_db_page);
 657                 if (err)
 658                         goto err_unmap_set;
 659         }
 660
 661         cq = kzalloc(sizeof(*cq), GFP_KERNEL);
 662         if (!cq) {
 663                 err = -ENOMEM;
 664                 goto err_unmap_arm;
 665         }
 666
 667         if (context) {
 668                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 669                 cq->set_ci_db_index  = ucmd.set_db_index;
 670                 cq->arm_db_index     = ucmd.arm_db_index;
 671         }
 672
 673         for (nent = 1; nent <= entries; nent <<= 1)
 674                 ; /* nothing */
 675
 676         err = mthca_init_cq(to_mdev(ibdev), nent,
 677                             context ? to_mucontext(context) : NULL,
 678                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 679                             cq);
 680         if (err)
 681                 goto err_free;
 682
 683         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 684                 mthca_free_cq(to_mdev(ibdev), cq);
 685                 err = -EFAULT;
 686                 goto err_free;
 687         }
 688
 689         cq->resize_buf = NULL;
 690
 691         return &cq->ibcq;
 692
 693 err_free:
 694         kfree(cq);
 695
 696 err_unmap_arm:
 697         if (context)
 698                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 699                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 700
 701 err_unmap_set:
 702         if (context)
 703                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 704                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 705
 706         return ERR_PTR(err);
 707 }
 708
 709 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 710                                   int entries)
 711 {
 712         int ret;
 713
 714         spin_lock_irq(&cq->lock);
 715         if (cq->resize_buf) {
 716                 ret = -EBUSY;
 717                 goto unlock;
 718         }
 719
 720         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 721         if (!cq->resize_buf) {
 722                 ret = -ENOMEM;
 723                 goto unlock;
 724         }
 725
 726         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 727
 728         ret = 0;
 729
 730 unlock:
 731         spin_unlock_irq(&cq->lock);
 732
 733         if (ret)
 734                 return ret;
 735
 736         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 737         if (ret) {
 738                 spin_lock_irq(&cq->lock);
 739                 kfree(cq->resize_buf);
 740                 cq->resize_buf = NULL;
 741                 spin_unlock_irq(&cq->lock);
 742                 return ret;
 743         }
 744
 745         cq->resize_buf->cqe = entries - 1;
 746
 747         spin_lock_irq(&cq->lock);
 748         cq->resize_buf->state = CQ_RESIZE_READY;
 749         spin_unlock_irq(&cq->lock);
 750
 751         return 0;
 752 }
 753
 754 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 755 {
 756         struct mthca_dev *dev = to_mdev(ibcq->device);
 757         struct mthca_cq *cq = to_mcq(ibcq);
 758         struct mthca_resize_cq ucmd;
 759         u32 lkey;
 760         int ret;
 761
 762         if (entries < 1 || entries > dev->limits.max_cqes)
 763                 return -EINVAL;
 764
 765         mutex_lock(&cq->mutex);
 766
 767         entries = roundup_pow_of_two(entries + 1);
 768         if (entries == ibcq->cqe + 1) {
 769                 ret = 0;
 770                 goto out;
 771         }
 772
 773         if (cq->is_kernel) {
 774                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 775                 if (ret)
 776                         goto out;
 777                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 778         } else {
 779                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 780                         ret = -EFAULT;
 781                         goto out;
 782                 }
 783                 lkey = ucmd.lkey;
 784         }
 785
 786         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 787
 788         if (ret) {
 789                 if (cq->resize_buf) {
 790                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 791                                           cq->resize_buf->cqe);
 792                         kfree(cq->resize_buf);
 793                         spin_lock_irq(&cq->lock);
 794                         cq->resize_buf = NULL;
 795                         spin_unlock_irq(&cq->lock);
 796                 }
 797                 goto out;
 798         }
 799
 800         if (cq->is_kernel) {
 801                 struct mthca_cq_buf tbuf;
 802                 int tcqe;
 803
 804                 spin_lock_irq(&cq->lock);
 805                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 806                         mthca_cq_resize_copy_cqes(cq);
 807                         tbuf         = cq->buf;
 808                         tcqe         = cq->ibcq.cqe;
 809                         cq->buf      = cq->resize_buf->buf;
 810                         cq->ibcq.cqe = cq->resize_buf->cqe;
 811                 } else {
 812                         tbuf = cq->resize_buf->buf;
 813                         tcqe = cq->resize_buf->cqe;
 814                 }
 815
 816                 kfree(cq->resize_buf);
 817                 cq->resize_buf = NULL;
 818                 spin_unlock_irq(&cq->lock);
 819
 820                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 821         } else
 822                 ibcq->cqe = entries - 1;
 823
 824 out:
 825         mutex_unlock(&cq->mutex);
 826
 827         return ret;
 828 }
 829
 830 static int mthca_destroy_cq(struct ib_cq *cq)
 831 {
 832         if (cq->uobject) {
 833                 mthca_unmap_user_db(to_mdev(cq->device),
 834                                     &to_mucontext(cq->uobject->context)->uar,
 835                                     to_mucontext(cq->uobject->context)->db_tab,
 836                                     to_mcq(cq)->arm_db_index);
 837                 mthca_unmap_user_db(to_mdev(cq->device),
 838                                     &to_mucontext(cq->uobject->context)->uar,
 839                                     to_mucontext(cq->uobject->context)->db_tab,
 840                                     to_mcq(cq)->set_ci_db_index);
 841         }
 842         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 843         kfree(cq);
 844
 845         return 0;
 846 }
 847
 848 static inline u32 convert_access(int acc)
 849 {
 850         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 851                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 852                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 853                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 854                MTHCA_MPT_FLAG_LOCAL_READ;
 855 }
 856
 857 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 858 {
 859         struct mthca_mr *mr;
 860         int err;
 861
 862         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 863         if (!mr)
 864                 return ERR_PTR(-ENOMEM);
 865
 866         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 867                                      to_mpd(pd)->pd_num,
 868                                      convert_access(acc), mr);
 869
 870         if (err) {
 871                 kfree(mr);
 872                 return ERR_PTR(err);
 873         }
 874
 875         mr->umem = NULL;
 876
 877         return &mr->ibmr;
 878 }
 879
 880 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 881                                        u64 virt, int acc, struct ib_udata *udata)
 882 {
 883         struct mthca_dev *dev = to_mdev(pd->device);
 884         struct sg_dma_page_iter sg_iter;
 885         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 886                 udata, struct mthca_ucontext, ibucontext);
 887         struct mthca_mr *mr;
 888         struct mthca_reg_mr ucmd;
 889         u64 *pages;
 890         int n, i;
 891         int err = 0;
 892         int write_mtt_size;
 893
 894         if (udata->inlen < sizeof ucmd) {
 895                 if (!context->reg_mr_warned) {
 896                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 897                                    current->comm);
 898                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 899                 }
 900                 ++context->reg_mr_warned;
 901                 ucmd.mr_attrs = 0;
 902         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 903                 return ERR_PTR(-EFAULT);
 904
 905         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 906         if (!mr)
 907                 return ERR_PTR(-ENOMEM);
 908
 909         mr->umem = ib_umem_get(udata, start, length, acc,
 910                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
 911
 912         if (IS_ERR(mr->umem)) {
 913                 err = PTR_ERR(mr->umem);
 914                 goto err;
 915         }
 916
 917         n = mr->umem->nmap;
 918
 919         mr->mtt = mthca_alloc_mtt(dev, n);
 920         if (IS_ERR(mr->mtt)) {
 921                 err = PTR_ERR(mr->mtt);
 922                 goto err_umem;
 923         }
 924
 925         pages = (u64 *) __get_free_page(GFP_KERNEL);
 926         if (!pages) {
 927                 err = -ENOMEM;
 928                 goto err_mtt;
 929         }
 930
 931         i = n = 0;
 932
 933         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
 934
 935         for_each_sg_dma_page(mr->umem->sg_head.sgl, &sg_iter, mr->umem->nmap, 0) {
 936                 pages[i++] = sg_page_iter_dma_address(&sg_iter);
 937
 938                 /*
 939                  * Be friendly to write_mtt and pass it chunks
 940                  * of appropriate size.
 941                  */
 942                 if (i == write_mtt_size) {
 943                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 944                         if (err)
 945                                 goto mtt_done;
 946                         n += i;
 947                         i = 0;
 948                 }
 949         }
 950
 951         if (i)
 952                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 953 mtt_done:
 954         free_page((unsigned long) pages);
 955         if (err)
 956                 goto err_mtt;
 957
 958         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, PAGE_SHIFT, virt, length,
 959                              convert_access(acc), mr);
 960
 961         if (err)
 962                 goto err_mtt;
 963
 964         return &mr->ibmr;
 965
 966 err_mtt:
 967         mthca_free_mtt(dev, mr->mtt);
 968
 969 err_umem:
 970         ib_umem_release(mr->umem);
 971
 972 err:
 973         kfree(mr);
 974         return ERR_PTR(err);
 975 }
 976
 977 static int mthca_dereg_mr(struct ib_mr *mr)
 978 {
 979         struct mthca_mr *mmr = to_mmr(mr);
 980
 981         mthca_free_mr(to_mdev(mr->device), mmr);
 982         if (mmr->umem)
 983                 ib_umem_release(mmr->umem);
 984         kfree(mmr);
 985
 986         return 0;
 987 }
 988
 989 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
 990                                       struct ib_fmr_attr *fmr_attr)
 991 {
 992         struct mthca_fmr *fmr;
 993         int err;
 994
 995         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
 996         if (!fmr)
 997                 return ERR_PTR(-ENOMEM);
 998
 999         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1000         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1001                              convert_access(mr_access_flags), fmr);
1002
1003         if (err) {
1004                 kfree(fmr);
1005                 return ERR_PTR(err);
1006         }
1007
1008         return &fmr->ibmr;
1009 }
1010
1011 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1012 {
1013         struct mthca_fmr *mfmr = to_mfmr(fmr);
1014         int err;
1015
1016         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1017         if (err)
1018                 return err;
1019
1020         kfree(mfmr);
1021         return 0;
1022 }
1023
1024 static int mthca_unmap_fmr(struct list_head *fmr_list)
1025 {
1026         struct ib_fmr *fmr;
1027         int err;
1028         struct mthca_dev *mdev = NULL;
1029
1030         list_for_each_entry(fmr, fmr_list, list) {
1031                 if (mdev && to_mdev(fmr->device) != mdev)
1032                         return -EINVAL;
1033                 mdev = to_mdev(fmr->device);
1034         }
1035
1036         if (!mdev)
1037                 return 0;
1038
1039         if (mthca_is_memfree(mdev)) {
1040                 list_for_each_entry(fmr, fmr_list, list)
1041                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1042
1043                 wmb();
1044         } else
1045                 list_for_each_entry(fmr, fmr_list, list)
1046                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1047
1048         err = mthca_SYNC_TPT(mdev);
1049         return err;
1050 }
1051
1052 static ssize_t hw_rev_show(struct device *device,
1053                            struct device_attribute *attr, char *buf)
1054 {
1055         struct mthca_dev *dev =
1056                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1057
1058         return sprintf(buf, "%x\n", dev->rev_id);
1059 }
1060 static DEVICE_ATTR_RO(hw_rev);
1061
1062 static ssize_t hca_type_show(struct device *device,
1063                              struct device_attribute *attr, char *buf)
1064 {
1065         struct mthca_dev *dev =
1066                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1067
1068         switch (dev->pdev->device) {
1069         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1070                 return sprintf(buf, "MT23108\n");
1071         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1072                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1073         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1074                 return sprintf(buf, "MT25208\n");
1075         case PCI_DEVICE_ID_MELLANOX_SINAI:
1076         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1077                 return sprintf(buf, "MT25204\n");
1078         default:
1079                 return sprintf(buf, "unknown\n");
1080         }
1081 }
1082 static DEVICE_ATTR_RO(hca_type);
1083
1084 static ssize_t board_id_show(struct device *device,
1085                              struct device_attribute *attr, char *buf)
1086 {
1087         struct mthca_dev *dev =
1088                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1089
1090         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1091 }
1092 static DEVICE_ATTR_RO(board_id);
1093
1094 static struct attribute *mthca_dev_attributes[] = {
1095         &dev_attr_hw_rev.attr,
1096         &dev_attr_hca_type.attr,
1097         &dev_attr_board_id.attr,
1098         NULL
1099 };
1100
1101 static const struct attribute_group mthca_attr_group = {
1102         .attrs = mthca_dev_attributes,
1103 };
1104
1105 static int mthca_init_node_data(struct mthca_dev *dev)
1106 {
1107         struct ib_smp *in_mad  = NULL;
1108         struct ib_smp *out_mad = NULL;
1109         int err = -ENOMEM;
1110
1111         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1112         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1113         if (!in_mad || !out_mad)
1114                 goto out;
1115
1116         init_query_mad(in_mad);
1117         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1118
1119         err = mthca_MAD_IFC(dev, 1, 1,
1120                             1, NULL, NULL, in_mad, out_mad);
1121         if (err)
1122                 goto out;
1123
1124         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1125
1126         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1127
1128         err = mthca_MAD_IFC(dev, 1, 1,
1129                             1, NULL, NULL, in_mad, out_mad);
1130         if (err)
1131                 goto out;
1132
1133         if (mthca_is_memfree(dev))
1134                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1135         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1136
1137 out:
1138         kfree(in_mad);
1139         kfree(out_mad);
1140         return err;
1141 }
1142
1143 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1144                                 struct ib_port_immutable *immutable)
1145 {
1146         struct ib_port_attr attr;
1147         int err;
1148
1149         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1150
1151         err = ib_query_port(ibdev, port_num, &attr);
1152         if (err)
1153                 return err;
1154
1155         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1156         immutable->gid_tbl_len = attr.gid_tbl_len;
1157         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1158
1159         return 0;
1160 }
1161
1162 static void get_dev_fw_str(struct ib_device *device, char *str)
1163 {
1164         struct mthca_dev *dev =
1165                 container_of(device, struct mthca_dev, ib_dev);
1166         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1167                  (int) (dev->fw_ver >> 32),
1168                  (int) (dev->fw_ver >> 16) & 0xffff,
1169                  (int) dev->fw_ver & 0xffff);
1170 }
1171
1172 static const struct ib_device_ops mthca_dev_ops = {
1173         .alloc_pd = mthca_alloc_pd,
1174         .alloc_ucontext = mthca_alloc_ucontext,
1175         .attach_mcast = mthca_multicast_attach,
1176         .create_ah = mthca_ah_create,
1177         .create_cq = mthca_create_cq,
1178         .create_qp = mthca_create_qp,
1179         .dealloc_pd = mthca_dealloc_pd,
1180         .dealloc_ucontext = mthca_dealloc_ucontext,
1181         .dereg_mr = mthca_dereg_mr,
1182         .destroy_ah = mthca_ah_destroy,
1183         .destroy_cq = mthca_destroy_cq,
1184         .destroy_qp = mthca_destroy_qp,
1185         .detach_mcast = mthca_multicast_detach,
1186         .get_dev_fw_str = get_dev_fw_str,
1187         .get_dma_mr = mthca_get_dma_mr,
1188         .get_port_immutable = mthca_port_immutable,
1189         .mmap = mthca_mmap_uar,
1190         .modify_device = mthca_modify_device,
1191         .modify_port = mthca_modify_port,
1192         .modify_qp = mthca_modify_qp,
1193         .poll_cq = mthca_poll_cq,
1194         .process_mad = mthca_process_mad,
1195         .query_ah = mthca_ah_query,
1196         .query_device = mthca_query_device,
1197         .query_gid = mthca_query_gid,
1198         .query_pkey = mthca_query_pkey,
1199         .query_port = mthca_query_port,
1200         .query_qp = mthca_query_qp,
1201         .reg_user_mr = mthca_reg_user_mr,
1202         .resize_cq = mthca_resize_cq,
1203         INIT_RDMA_OBJ_SIZE(ib_pd, mthca_pd, ibpd),
1204         INIT_RDMA_OBJ_SIZE(ib_ucontext, mthca_ucontext, ibucontext),
1205 };
1206
1207 static const struct ib_device_ops mthca_dev_arbel_srq_ops = {
1208         .create_srq = mthca_create_srq,
1209         .destroy_srq = mthca_destroy_srq,
1210         .modify_srq = mthca_modify_srq,
1211         .post_srq_recv = mthca_arbel_post_srq_recv,
1212         .query_srq = mthca_query_srq,
1213 };
1214
1215 static const struct ib_device_ops mthca_dev_tavor_srq_ops = {
1216         .create_srq = mthca_create_srq,
1217         .destroy_srq = mthca_destroy_srq,
1218         .modify_srq = mthca_modify_srq,
1219         .post_srq_recv = mthca_tavor_post_srq_recv,
1220         .query_srq = mthca_query_srq,
1221 };
1222
1223 static const struct ib_device_ops mthca_dev_arbel_fmr_ops = {
1224         .alloc_fmr = mthca_alloc_fmr,
1225         .dealloc_fmr = mthca_dealloc_fmr,
1226         .map_phys_fmr = mthca_arbel_map_phys_fmr,
1227         .unmap_fmr = mthca_unmap_fmr,
1228 };
1229
1230 static const struct ib_device_ops mthca_dev_tavor_fmr_ops = {
1231         .alloc_fmr = mthca_alloc_fmr,
1232         .dealloc_fmr = mthca_dealloc_fmr,
1233         .map_phys_fmr = mthca_tavor_map_phys_fmr,
1234         .unmap_fmr = mthca_unmap_fmr,
1235 };
1236
1237 static const struct ib_device_ops mthca_dev_arbel_ops = {
1238         .post_recv = mthca_arbel_post_receive,
1239         .post_send = mthca_arbel_post_send,
1240         .req_notify_cq = mthca_arbel_arm_cq,
1241 };
1242
1243 static const struct ib_device_ops mthca_dev_tavor_ops = {
1244         .post_recv = mthca_tavor_post_receive,
1245         .post_send = mthca_tavor_post_send,
1246         .req_notify_cq = mthca_tavor_arm_cq,
1247 };
1248
1249 int mthca_register_device(struct mthca_dev *dev)
1250 {
1251         int ret;
1252
1253         ret = mthca_init_node_data(dev);
1254         if (ret)
1255                 return ret;
1256
1257         dev->ib_dev.owner                = THIS_MODULE;
1258
1259         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1260         dev->ib_dev.uverbs_cmd_mask      =
1261                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1262                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1263                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1264                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1265                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1266                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1267                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1268                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1269                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1270                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1271                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1272                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1273                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1274                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1275                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1276                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1277                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1278         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1279         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1280         dev->ib_dev.num_comp_vectors     = 1;
1281         dev->ib_dev.dev.parent           = &dev->pdev->dev;
1282
1283         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1284                 dev->ib_dev.uverbs_cmd_mask     |=
1285                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1286                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1287                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1288                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1289
1290                 if (mthca_is_memfree(dev))
1291                         ib_set_device_ops(&dev->ib_dev,
1292                                           &mthca_dev_arbel_srq_ops);
1293                 else
1294                         ib_set_device_ops(&dev->ib_dev,
1295                                           &mthca_dev_tavor_srq_ops);
1296         }
1297
1298         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1299                 if (mthca_is_memfree(dev))
1300                         ib_set_device_ops(&dev->ib_dev,
1301                                           &mthca_dev_arbel_fmr_ops);
1302                 else
1303                         ib_set_device_ops(&dev->ib_dev,
1304                                           &mthca_dev_tavor_fmr_ops);
1305         }
1306
1307         ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops);
1308
1309         if (mthca_is_memfree(dev))
1310                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_arbel_ops);
1311         else
1312                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_tavor_ops);
1313
1314         mutex_init(&dev->cap_mask_mutex);
1315
1316         rdma_set_device_sysfs_group(&dev->ib_dev, &mthca_attr_group);
1317         dev->ib_dev.driver_id = RDMA_DRIVER_MTHCA;
1318         ret = ib_register_device(&dev->ib_dev, "mthca%d");
1319         if (ret)
1320                 return ret;
1321
1322         mthca_start_catas_poll(dev);
1323
1324         return 0;
1325 }
1326
1327 void mthca_unregister_device(struct mthca_dev *dev)
1328 {
1329         mthca_stop_catas_poll(dev);
1330         ib_unregister_device(&dev->ib_dev);
1331 }