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_udata *udata)
 367 {
 368         struct ib_device *ibdev = ibpd->device;
 369         struct mthca_pd *pd = to_mpd(ibpd);
 370         int err;
 371
 372         err = mthca_pd_alloc(to_mdev(ibdev), !udata, pd);
 373         if (err)
 374                 return err;
 375
 376         if (udata) {
 377                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 378                         mthca_pd_free(to_mdev(ibdev), pd);
 379                         return -EFAULT;
 380                 }
 381         }
 382
 383         return 0;
 384 }
 385
 386 static void mthca_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
 387 {
 388         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 389 }
 390
 391 static int mthca_ah_create(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr,
 392                            u32 flags, struct ib_udata *udata)
 393
 394 {
 395         struct mthca_ah *ah = to_mah(ibah);
 396
 397         return mthca_create_ah(to_mdev(ibah->device), to_mpd(ibah->pd), ah_attr,
 398                                ah);
 399 }
 400
 401 static void mthca_ah_destroy(struct ib_ah *ah, u32 flags)
 402 {
 403         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 404 }
 405
 406 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 407                                        struct ib_srq_init_attr *init_attr,
 408                                        struct ib_udata *udata)
 409 {
 410         struct mthca_create_srq ucmd;
 411         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 412                 udata, struct mthca_ucontext, ibucontext);
 413         struct mthca_srq *srq;
 414         int err;
 415
 416         if (init_attr->srq_type != IB_SRQT_BASIC)
 417                 return ERR_PTR(-EOPNOTSUPP);
 418
 419         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 420         if (!srq)
 421                 return ERR_PTR(-ENOMEM);
 422
 423         if (udata) {
 424                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 425                         err = -EFAULT;
 426                         goto err_free;
 427                 }
 428
 429                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 430                                         context->db_tab, ucmd.db_index,
 431                                         ucmd.db_page);
 432
 433                 if (err)
 434                         goto err_free;
 435
 436                 srq->mr.ibmr.lkey = ucmd.lkey;
 437                 srq->db_index     = ucmd.db_index;
 438         }
 439
 440         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 441                               &init_attr->attr, srq, udata);
 442
 443         if (err && udata)
 444                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 445                                     context->db_tab, ucmd.db_index);
 446
 447         if (err)
 448                 goto err_free;
 449
 450         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 451                 mthca_free_srq(to_mdev(pd->device), srq);
 452                 err = -EFAULT;
 453                 goto err_free;
 454         }
 455
 456         return &srq->ibsrq;
 457
 458 err_free:
 459         kfree(srq);
 460
 461         return ERR_PTR(err);
 462 }
 463
 464 static int mthca_destroy_srq(struct ib_srq *srq, struct ib_udata *udata)
 465 {
 466         if (udata) {
 467                 struct mthca_ucontext *context =
 468                         rdma_udata_to_drv_context(
 469                                 udata,
 470                                 struct mthca_ucontext,
 471                                 ibucontext);
 472
 473                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 474                                     context->db_tab, to_msrq(srq)->db_index);
 475         }
 476
 477         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 478         kfree(srq);
 479
 480         return 0;
 481 }
 482
 483 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 484                                      struct ib_qp_init_attr *init_attr,
 485                                      struct ib_udata *udata)
 486 {
 487         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 488                 udata, struct mthca_ucontext, ibucontext);
 489         struct mthca_create_qp ucmd;
 490         struct mthca_qp *qp;
 491         int err;
 492
 493         if (init_attr->create_flags)
 494                 return ERR_PTR(-EINVAL);
 495
 496         switch (init_attr->qp_type) {
 497         case IB_QPT_RC:
 498         case IB_QPT_UC:
 499         case IB_QPT_UD:
 500         {
 501                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
 502                 if (!qp)
 503                         return ERR_PTR(-ENOMEM);
 504
 505                 if (udata) {
 506                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 507                                 kfree(qp);
 508                                 return ERR_PTR(-EFAULT);
 509                         }
 510
 511                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 512                                                 context->db_tab,
 513                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 514                         if (err) {
 515                                 kfree(qp);
 516                                 return ERR_PTR(err);
 517                         }
 518
 519                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 520                                                 context->db_tab,
 521                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 522                         if (err) {
 523                                 mthca_unmap_user_db(to_mdev(pd->device),
 524                                                     &context->uar,
 525                                                     context->db_tab,
 526                                                     ucmd.sq_db_index);
 527                                 kfree(qp);
 528                                 return ERR_PTR(err);
 529                         }
 530
 531                         qp->mr.ibmr.lkey = ucmd.lkey;
 532                         qp->sq.db_index  = ucmd.sq_db_index;
 533                         qp->rq.db_index  = ucmd.rq_db_index;
 534                 }
 535
 536                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 537                                      to_mcq(init_attr->send_cq),
 538                                      to_mcq(init_attr->recv_cq),
 539                                      init_attr->qp_type, init_attr->sq_sig_type,
 540                                      &init_attr->cap, qp, udata);
 541
 542                 if (err && udata) {
 543                         mthca_unmap_user_db(to_mdev(pd->device),
 544                                             &context->uar,
 545                                             context->db_tab,
 546                                             ucmd.sq_db_index);
 547                         mthca_unmap_user_db(to_mdev(pd->device),
 548                                             &context->uar,
 549                                             context->db_tab,
 550                                             ucmd.rq_db_index);
 551                 }
 552
 553                 qp->ibqp.qp_num = qp->qpn;
 554                 break;
 555         }
 556         case IB_QPT_SMI:
 557         case IB_QPT_GSI:
 558         {
 559                 /* Don't allow userspace to create special QPs */
 560                 if (udata)
 561                         return ERR_PTR(-EINVAL);
 562
 563                 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
 564                 if (!qp)
 565                         return ERR_PTR(-ENOMEM);
 566
 567                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 568
 569                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 570                                       to_mcq(init_attr->send_cq),
 571                                       to_mcq(init_attr->recv_cq),
 572                                       init_attr->sq_sig_type, &init_attr->cap,
 573                                       qp->ibqp.qp_num, init_attr->port_num,
 574                                       to_msqp(qp), udata);
 575                 break;
 576         }
 577         default:
 578                 /* Don't support raw QPs */
 579                 return ERR_PTR(-ENOSYS);
 580         }
 581
 582         if (err) {
 583                 kfree(qp);
 584                 return ERR_PTR(err);
 585         }
 586
 587         init_attr->cap.max_send_wr     = qp->sq.max;
 588         init_attr->cap.max_recv_wr     = qp->rq.max;
 589         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 590         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 591         init_attr->cap.max_inline_data = qp->max_inline_data;
 592
 593         return &qp->ibqp;
 594 }
 595
 596 static int mthca_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
 597 {
 598         if (udata) {
 599                 struct mthca_ucontext *context =
 600                         rdma_udata_to_drv_context(
 601                                 udata,
 602                                 struct mthca_ucontext,
 603                                 ibucontext);
 604
 605                 mthca_unmap_user_db(to_mdev(qp->device),
 606                                     &context->uar,
 607                                     context->db_tab,
 608                                     to_mqp(qp)->sq.db_index);
 609                 mthca_unmap_user_db(to_mdev(qp->device),
 610                                     &context->uar,
 611                                     context->db_tab,
 612                                     to_mqp(qp)->rq.db_index);
 613         }
 614         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 615         kfree(qp);
 616         return 0;
 617 }
 618
 619 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 620                                      const struct ib_cq_init_attr *attr,
 621                                      struct ib_udata *udata)
 622 {
 623         int entries = attr->cqe;
 624         struct mthca_create_cq ucmd;
 625         struct mthca_cq *cq;
 626         int nent;
 627         int err;
 628         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 629                 udata, struct mthca_ucontext, ibucontext);
 630
 631         if (attr->flags)
 632                 return ERR_PTR(-EINVAL);
 633
 634         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 635                 return ERR_PTR(-EINVAL);
 636
 637         if (udata) {
 638                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 639                         return ERR_PTR(-EFAULT);
 640
 641                 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
 642                                         context->db_tab, ucmd.set_db_index,
 643                                         ucmd.set_db_page);
 644                 if (err)
 645                         return ERR_PTR(err);
 646
 647                 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
 648                                         context->db_tab, ucmd.arm_db_index,
 649                                         ucmd.arm_db_page);
 650                 if (err)
 651                         goto err_unmap_set;
 652         }
 653
 654         cq = kzalloc(sizeof(*cq), GFP_KERNEL);
 655         if (!cq) {
 656                 err = -ENOMEM;
 657                 goto err_unmap_arm;
 658         }
 659
 660         if (udata) {
 661                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 662                 cq->set_ci_db_index  = ucmd.set_db_index;
 663                 cq->arm_db_index     = ucmd.arm_db_index;
 664         }
 665
 666         for (nent = 1; nent <= entries; nent <<= 1)
 667                 ; /* nothing */
 668
 669         err = mthca_init_cq(to_mdev(ibdev), nent, context,
 670                             udata ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 671                             cq);
 672         if (err)
 673                 goto err_free;
 674
 675         if (udata && ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) {
 676                 mthca_free_cq(to_mdev(ibdev), cq);
 677                 err = -EFAULT;
 678                 goto err_free;
 679         }
 680
 681         cq->resize_buf = NULL;
 682
 683         return &cq->ibcq;
 684
 685 err_free:
 686         kfree(cq);
 687
 688 err_unmap_arm:
 689         if (udata)
 690                 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
 691                                     context->db_tab, ucmd.arm_db_index);
 692
 693 err_unmap_set:
 694         if (udata)
 695                 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
 696                                     context->db_tab, ucmd.set_db_index);
 697
 698         return ERR_PTR(err);
 699 }
 700
 701 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 702                                   int entries)
 703 {
 704         int ret;
 705
 706         spin_lock_irq(&cq->lock);
 707         if (cq->resize_buf) {
 708                 ret = -EBUSY;
 709                 goto unlock;
 710         }
 711
 712         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 713         if (!cq->resize_buf) {
 714                 ret = -ENOMEM;
 715                 goto unlock;
 716         }
 717
 718         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 719
 720         ret = 0;
 721
 722 unlock:
 723         spin_unlock_irq(&cq->lock);
 724
 725         if (ret)
 726                 return ret;
 727
 728         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 729         if (ret) {
 730                 spin_lock_irq(&cq->lock);
 731                 kfree(cq->resize_buf);
 732                 cq->resize_buf = NULL;
 733                 spin_unlock_irq(&cq->lock);
 734                 return ret;
 735         }
 736
 737         cq->resize_buf->cqe = entries - 1;
 738
 739         spin_lock_irq(&cq->lock);
 740         cq->resize_buf->state = CQ_RESIZE_READY;
 741         spin_unlock_irq(&cq->lock);
 742
 743         return 0;
 744 }
 745
 746 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 747 {
 748         struct mthca_dev *dev = to_mdev(ibcq->device);
 749         struct mthca_cq *cq = to_mcq(ibcq);
 750         struct mthca_resize_cq ucmd;
 751         u32 lkey;
 752         int ret;
 753
 754         if (entries < 1 || entries > dev->limits.max_cqes)
 755                 return -EINVAL;
 756
 757         mutex_lock(&cq->mutex);
 758
 759         entries = roundup_pow_of_two(entries + 1);
 760         if (entries == ibcq->cqe + 1) {
 761                 ret = 0;
 762                 goto out;
 763         }
 764
 765         if (cq->is_kernel) {
 766                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 767                 if (ret)
 768                         goto out;
 769                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 770         } else {
 771                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 772                         ret = -EFAULT;
 773                         goto out;
 774                 }
 775                 lkey = ucmd.lkey;
 776         }
 777
 778         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 779
 780         if (ret) {
 781                 if (cq->resize_buf) {
 782                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 783                                           cq->resize_buf->cqe);
 784                         kfree(cq->resize_buf);
 785                         spin_lock_irq(&cq->lock);
 786                         cq->resize_buf = NULL;
 787                         spin_unlock_irq(&cq->lock);
 788                 }
 789                 goto out;
 790         }
 791
 792         if (cq->is_kernel) {
 793                 struct mthca_cq_buf tbuf;
 794                 int tcqe;
 795
 796                 spin_lock_irq(&cq->lock);
 797                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 798                         mthca_cq_resize_copy_cqes(cq);
 799                         tbuf         = cq->buf;
 800                         tcqe         = cq->ibcq.cqe;
 801                         cq->buf      = cq->resize_buf->buf;
 802                         cq->ibcq.cqe = cq->resize_buf->cqe;
 803                 } else {
 804                         tbuf = cq->resize_buf->buf;
 805                         tcqe = cq->resize_buf->cqe;
 806                 }
 807
 808                 kfree(cq->resize_buf);
 809                 cq->resize_buf = NULL;
 810                 spin_unlock_irq(&cq->lock);
 811
 812                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 813         } else
 814                 ibcq->cqe = entries - 1;
 815
 816 out:
 817         mutex_unlock(&cq->mutex);
 818
 819         return ret;
 820 }
 821
 822 static int mthca_destroy_cq(struct ib_cq *cq, struct ib_udata *udata)
 823 {
 824         if (udata) {
 825                 struct mthca_ucontext *context =
 826                         rdma_udata_to_drv_context(
 827                                 udata,
 828                                 struct mthca_ucontext,
 829                                 ibucontext);
 830
 831                 mthca_unmap_user_db(to_mdev(cq->device),
 832                                     &context->uar,
 833                                     context->db_tab,
 834                                     to_mcq(cq)->arm_db_index);
 835                 mthca_unmap_user_db(to_mdev(cq->device),
 836                                     &context->uar,
 837                                     context->db_tab,
 838                                     to_mcq(cq)->set_ci_db_index);
 839         }
 840         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 841         kfree(cq);
 842
 843         return 0;
 844 }
 845
 846 static inline u32 convert_access(int acc)
 847 {
 848         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 849                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 850                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 851                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 852                MTHCA_MPT_FLAG_LOCAL_READ;
 853 }
 854
 855 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 856 {
 857         struct mthca_mr *mr;
 858         int err;
 859
 860         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 861         if (!mr)
 862                 return ERR_PTR(-ENOMEM);
 863
 864         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 865                                      to_mpd(pd)->pd_num,
 866                                      convert_access(acc), mr);
 867
 868         if (err) {
 869                 kfree(mr);
 870                 return ERR_PTR(err);
 871         }
 872
 873         mr->umem = NULL;
 874
 875         return &mr->ibmr;
 876 }
 877
 878 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 879                                        u64 virt, int acc, struct ib_udata *udata)
 880 {
 881         struct mthca_dev *dev = to_mdev(pd->device);
 882         struct sg_dma_page_iter sg_iter;
 883         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 884                 udata, struct mthca_ucontext, ibucontext);
 885         struct mthca_mr *mr;
 886         struct mthca_reg_mr ucmd;
 887         u64 *pages;
 888         int n, i;
 889         int err = 0;
 890         int write_mtt_size;
 891
 892         if (udata->inlen < sizeof ucmd) {
 893                 if (!context->reg_mr_warned) {
 894                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 895                                    current->comm);
 896                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 897                 }
 898                 ++context->reg_mr_warned;
 899                 ucmd.mr_attrs = 0;
 900         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 901                 return ERR_PTR(-EFAULT);
 902
 903         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 904         if (!mr)
 905                 return ERR_PTR(-ENOMEM);
 906
 907         mr->umem = ib_umem_get(udata, start, length, acc,
 908                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
 909
 910         if (IS_ERR(mr->umem)) {
 911                 err = PTR_ERR(mr->umem);
 912                 goto err;
 913         }
 914
 915         n = ib_umem_num_pages(mr->umem);
 916
 917         mr->mtt = mthca_alloc_mtt(dev, n);
 918         if (IS_ERR(mr->mtt)) {
 919                 err = PTR_ERR(mr->mtt);
 920                 goto err_umem;
 921         }
 922
 923         pages = (u64 *) __get_free_page(GFP_KERNEL);
 924         if (!pages) {
 925                 err = -ENOMEM;
 926                 goto err_mtt;
 927         }
 928
 929         i = n = 0;
 930
 931         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
 932
 933         for_each_sg_dma_page(mr->umem->sg_head.sgl, &sg_iter, mr->umem->nmap, 0) {
 934                 pages[i++] = sg_page_iter_dma_address(&sg_iter);
 935
 936                 /*
 937                  * Be friendly to write_mtt and pass it chunks
 938                  * of appropriate size.
 939                  */
 940                 if (i == write_mtt_size) {
 941                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 942                         if (err)
 943                                 goto mtt_done;
 944                         n += i;
 945                         i = 0;
 946                 }
 947         }
 948
 949         if (i)
 950                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 951 mtt_done:
 952         free_page((unsigned long) pages);
 953         if (err)
 954                 goto err_mtt;
 955
 956         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, PAGE_SHIFT, virt, length,
 957                              convert_access(acc), mr);
 958
 959         if (err)
 960                 goto err_mtt;
 961
 962         return &mr->ibmr;
 963
 964 err_mtt:
 965         mthca_free_mtt(dev, mr->mtt);
 966
 967 err_umem:
 968         ib_umem_release(mr->umem);
 969
 970 err:
 971         kfree(mr);
 972         return ERR_PTR(err);
 973 }
 974
 975 static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata)
 976 {
 977         struct mthca_mr *mmr = to_mmr(mr);
 978
 979         mthca_free_mr(to_mdev(mr->device), mmr);
 980         if (mmr->umem)
 981                 ib_umem_release(mmr->umem);
 982         kfree(mmr);
 983
 984         return 0;
 985 }
 986
 987 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
 988                                       struct ib_fmr_attr *fmr_attr)
 989 {
 990         struct mthca_fmr *fmr;
 991         int err;
 992
 993         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
 994         if (!fmr)
 995                 return ERR_PTR(-ENOMEM);
 996
 997         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
 998         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
 999                              convert_access(mr_access_flags), fmr);
1000
1001         if (err) {
1002                 kfree(fmr);
1003                 return ERR_PTR(err);
1004         }
1005
1006         return &fmr->ibmr;
1007 }
1008
1009 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1010 {
1011         struct mthca_fmr *mfmr = to_mfmr(fmr);
1012         int err;
1013
1014         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1015         if (err)
1016                 return err;
1017
1018         kfree(mfmr);
1019         return 0;
1020 }
1021
1022 static int mthca_unmap_fmr(struct list_head *fmr_list)
1023 {
1024         struct ib_fmr *fmr;
1025         int err;
1026         struct mthca_dev *mdev = NULL;
1027
1028         list_for_each_entry(fmr, fmr_list, list) {
1029                 if (mdev && to_mdev(fmr->device) != mdev)
1030                         return -EINVAL;
1031                 mdev = to_mdev(fmr->device);
1032         }
1033
1034         if (!mdev)
1035                 return 0;
1036
1037         if (mthca_is_memfree(mdev)) {
1038                 list_for_each_entry(fmr, fmr_list, list)
1039                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1040
1041                 wmb();
1042         } else
1043                 list_for_each_entry(fmr, fmr_list, list)
1044                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1045
1046         err = mthca_SYNC_TPT(mdev);
1047         return err;
1048 }
1049
1050 static ssize_t hw_rev_show(struct device *device,
1051                            struct device_attribute *attr, char *buf)
1052 {
1053         struct mthca_dev *dev =
1054                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1055
1056         return sprintf(buf, "%x\n", dev->rev_id);
1057 }
1058 static DEVICE_ATTR_RO(hw_rev);
1059
1060 static ssize_t hca_type_show(struct device *device,
1061                              struct device_attribute *attr, char *buf)
1062 {
1063         struct mthca_dev *dev =
1064                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1065
1066         switch (dev->pdev->device) {
1067         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1068                 return sprintf(buf, "MT23108\n");
1069         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1070                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1071         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1072                 return sprintf(buf, "MT25208\n");
1073         case PCI_DEVICE_ID_MELLANOX_SINAI:
1074         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1075                 return sprintf(buf, "MT25204\n");
1076         default:
1077                 return sprintf(buf, "unknown\n");
1078         }
1079 }
1080 static DEVICE_ATTR_RO(hca_type);
1081
1082 static ssize_t board_id_show(struct device *device,
1083                              struct device_attribute *attr, char *buf)
1084 {
1085         struct mthca_dev *dev =
1086                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1087
1088         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1089 }
1090 static DEVICE_ATTR_RO(board_id);
1091
1092 static struct attribute *mthca_dev_attributes[] = {
1093         &dev_attr_hw_rev.attr,
1094         &dev_attr_hca_type.attr,
1095         &dev_attr_board_id.attr,
1096         NULL
1097 };
1098
1099 static const struct attribute_group mthca_attr_group = {
1100         .attrs = mthca_dev_attributes,
1101 };
1102
1103 static int mthca_init_node_data(struct mthca_dev *dev)
1104 {
1105         struct ib_smp *in_mad  = NULL;
1106         struct ib_smp *out_mad = NULL;
1107         int err = -ENOMEM;
1108
1109         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1110         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1111         if (!in_mad || !out_mad)
1112                 goto out;
1113
1114         init_query_mad(in_mad);
1115         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1116
1117         err = mthca_MAD_IFC(dev, 1, 1,
1118                             1, NULL, NULL, in_mad, out_mad);
1119         if (err)
1120                 goto out;
1121
1122         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1123
1124         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1125
1126         err = mthca_MAD_IFC(dev, 1, 1,
1127                             1, NULL, NULL, in_mad, out_mad);
1128         if (err)
1129                 goto out;
1130
1131         if (mthca_is_memfree(dev))
1132                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1133         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1134
1135 out:
1136         kfree(in_mad);
1137         kfree(out_mad);
1138         return err;
1139 }
1140
1141 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1142                                 struct ib_port_immutable *immutable)
1143 {
1144         struct ib_port_attr attr;
1145         int err;
1146
1147         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1148
1149         err = ib_query_port(ibdev, port_num, &attr);
1150         if (err)
1151                 return err;
1152
1153         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1154         immutable->gid_tbl_len = attr.gid_tbl_len;
1155         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1156
1157         return 0;
1158 }
1159
1160 static void get_dev_fw_str(struct ib_device *device, char *str)
1161 {
1162         struct mthca_dev *dev =
1163                 container_of(device, struct mthca_dev, ib_dev);
1164         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1165                  (int) (dev->fw_ver >> 32),
1166                  (int) (dev->fw_ver >> 16) & 0xffff,
1167                  (int) dev->fw_ver & 0xffff);
1168 }
1169
1170 static const struct ib_device_ops mthca_dev_ops = {
1171         .alloc_pd = mthca_alloc_pd,
1172         .alloc_ucontext = mthca_alloc_ucontext,
1173         .attach_mcast = mthca_multicast_attach,
1174         .create_ah = mthca_ah_create,
1175         .create_cq = mthca_create_cq,
1176         .create_qp = mthca_create_qp,
1177         .dealloc_pd = mthca_dealloc_pd,
1178         .dealloc_ucontext = mthca_dealloc_ucontext,
1179         .dereg_mr = mthca_dereg_mr,
1180         .destroy_ah = mthca_ah_destroy,
1181         .destroy_cq = mthca_destroy_cq,
1182         .destroy_qp = mthca_destroy_qp,
1183         .detach_mcast = mthca_multicast_detach,
1184         .get_dev_fw_str = get_dev_fw_str,
1185         .get_dma_mr = mthca_get_dma_mr,
1186         .get_port_immutable = mthca_port_immutable,
1187         .mmap = mthca_mmap_uar,
1188         .modify_device = mthca_modify_device,
1189         .modify_port = mthca_modify_port,
1190         .modify_qp = mthca_modify_qp,
1191         .poll_cq = mthca_poll_cq,
1192         .process_mad = mthca_process_mad,
1193         .query_ah = mthca_ah_query,
1194         .query_device = mthca_query_device,
1195         .query_gid = mthca_query_gid,
1196         .query_pkey = mthca_query_pkey,
1197         .query_port = mthca_query_port,
1198         .query_qp = mthca_query_qp,
1199         .reg_user_mr = mthca_reg_user_mr,
1200         .resize_cq = mthca_resize_cq,
1201
1202         INIT_RDMA_OBJ_SIZE(ib_ah, mthca_ah, ibah),
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 }