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 struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 305                                                 struct ib_udata *udata)
 306 {
 307         struct mthca_alloc_ucontext_resp uresp;
 308         struct mthca_ucontext           *context;
 309         int                              err;
 310
 311         if (!(to_mdev(ibdev)->active))
 312                 return ERR_PTR(-EAGAIN);
 313
 314         memset(&uresp, 0, sizeof uresp);
 315
 316         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 317         if (mthca_is_memfree(to_mdev(ibdev)))
 318                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 319         else
 320                 uresp.uarc_size = 0;
 321
 322         context = kzalloc(sizeof(*context), GFP_KERNEL);
 323         if (!context)
 324                 return ERR_PTR(-ENOMEM);
 325
 326         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 327         if (err) {
 328                 kfree(context);
 329                 return ERR_PTR(err);
 330         }
 331
 332         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 333         if (IS_ERR(context->db_tab)) {
 334                 err = PTR_ERR(context->db_tab);
 335                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 336                 kfree(context);
 337                 return ERR_PTR(err);
 338         }
 339
 340         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 341                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 342                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 343                 kfree(context);
 344                 return ERR_PTR(-EFAULT);
 345         }
 346
 347         context->reg_mr_warned = 0;
 348
 349         return &context->ibucontext;
 350 }
 351
 352 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 353 {
 354         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 355                                   to_mucontext(context)->db_tab);
 356         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 357         kfree(to_mucontext(context));
 358
 359         return 0;
 360 }
 361
 362 static int mthca_mmap_uar(struct ib_ucontext *context,
 363                           struct vm_area_struct *vma)
 364 {
 365         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 366                 return -EINVAL;
 367
 368         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 369
 370         if (io_remap_pfn_range(vma, vma->vm_start,
 371                                to_mucontext(context)->uar.pfn,
 372                                PAGE_SIZE, vma->vm_page_prot))
 373                 return -EAGAIN;
 374
 375         return 0;
 376 }
 377
 378 static int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context,
 379                           struct ib_udata *udata)
 380 {
 381         struct ib_device *ibdev = ibpd->device;
 382         struct mthca_pd *pd = to_mpd(ibpd);
 383         int err;
 384
 385         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 386         if (err)
 387                 return err;
 388
 389         if (context) {
 390                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 391                         mthca_pd_free(to_mdev(ibdev), pd);
 392                         return -EFAULT;
 393                 }
 394         }
 395
 396         return 0;
 397 }
 398
 399 static void mthca_dealloc_pd(struct ib_pd *pd)
 400 {
 401         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 402 }
 403
 404 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 405                                      struct rdma_ah_attr *ah_attr,
 406                                      u32 flags,
 407                                      struct ib_udata *udata)
 408
 409 {
 410         int err;
 411         struct mthca_ah *ah;
 412
 413         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 414         if (!ah)
 415                 return ERR_PTR(-ENOMEM);
 416
 417         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 418         if (err) {
 419                 kfree(ah);
 420                 return ERR_PTR(err);
 421         }
 422
 423         return &ah->ibah;
 424 }
 425
 426 static int mthca_ah_destroy(struct ib_ah *ah, u32 flags)
 427 {
 428         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 429         kfree(ah);
 430
 431         return 0;
 432 }
 433
 434 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 435                                        struct ib_srq_init_attr *init_attr,
 436                                        struct ib_udata *udata)
 437 {
 438         struct mthca_create_srq ucmd;
 439         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 440                 udata, struct mthca_ucontext, ibucontext);
 441         struct mthca_srq *srq;
 442         int err;
 443
 444         if (init_attr->srq_type != IB_SRQT_BASIC)
 445                 return ERR_PTR(-EOPNOTSUPP);
 446
 447         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 448         if (!srq)
 449                 return ERR_PTR(-ENOMEM);
 450
 451         if (udata) {
 452                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 453                         err = -EFAULT;
 454                         goto err_free;
 455                 }
 456
 457                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 458                                         context->db_tab, ucmd.db_index,
 459                                         ucmd.db_page);
 460
 461                 if (err)
 462                         goto err_free;
 463
 464                 srq->mr.ibmr.lkey = ucmd.lkey;
 465                 srq->db_index     = ucmd.db_index;
 466         }
 467
 468         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 469                               &init_attr->attr, srq, udata);
 470
 471         if (err && udata)
 472                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 473                                     context->db_tab, ucmd.db_index);
 474
 475         if (err)
 476                 goto err_free;
 477
 478         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 479                 mthca_free_srq(to_mdev(pd->device), srq);
 480                 err = -EFAULT;
 481                 goto err_free;
 482         }
 483
 484         return &srq->ibsrq;
 485
 486 err_free:
 487         kfree(srq);
 488
 489         return ERR_PTR(err);
 490 }
 491
 492 static int mthca_destroy_srq(struct ib_srq *srq)
 493 {
 494         struct mthca_ucontext *context;
 495
 496         if (srq->uobject) {
 497                 context = to_mucontext(srq->uobject->context);
 498
 499                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 500                                     context->db_tab, to_msrq(srq)->db_index);
 501         }
 502
 503         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 504         kfree(srq);
 505
 506         return 0;
 507 }
 508
 509 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 510                                      struct ib_qp_init_attr *init_attr,
 511                                      struct ib_udata *udata)
 512 {
 513         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 514                 udata, struct mthca_ucontext, ibucontext);
 515         struct mthca_create_qp ucmd;
 516         struct mthca_qp *qp;
 517         int err;
 518
 519         if (init_attr->create_flags)
 520                 return ERR_PTR(-EINVAL);
 521
 522         switch (init_attr->qp_type) {
 523         case IB_QPT_RC:
 524         case IB_QPT_UC:
 525         case IB_QPT_UD:
 526         {
 527                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
 528                 if (!qp)
 529                         return ERR_PTR(-ENOMEM);
 530
 531                 if (udata) {
 532                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 533                                 kfree(qp);
 534                                 return ERR_PTR(-EFAULT);
 535                         }
 536
 537                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 538                                                 context->db_tab,
 539                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 540                         if (err) {
 541                                 kfree(qp);
 542                                 return ERR_PTR(err);
 543                         }
 544
 545                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 546                                                 context->db_tab,
 547                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 548                         if (err) {
 549                                 mthca_unmap_user_db(to_mdev(pd->device),
 550                                                     &context->uar,
 551                                                     context->db_tab,
 552                                                     ucmd.sq_db_index);
 553                                 kfree(qp);
 554                                 return ERR_PTR(err);
 555                         }
 556
 557                         qp->mr.ibmr.lkey = ucmd.lkey;
 558                         qp->sq.db_index  = ucmd.sq_db_index;
 559                         qp->rq.db_index  = ucmd.rq_db_index;
 560                 }
 561
 562                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 563                                      to_mcq(init_attr->send_cq),
 564                                      to_mcq(init_attr->recv_cq),
 565                                      init_attr->qp_type, init_attr->sq_sig_type,
 566                                      &init_attr->cap, qp, udata);
 567
 568                 if (err && udata) {
 569                         mthca_unmap_user_db(to_mdev(pd->device),
 570                                             &context->uar,
 571                                             context->db_tab,
 572                                             ucmd.sq_db_index);
 573                         mthca_unmap_user_db(to_mdev(pd->device),
 574                                             &context->uar,
 575                                             context->db_tab,
 576                                             ucmd.rq_db_index);
 577                 }
 578
 579                 qp->ibqp.qp_num = qp->qpn;
 580                 break;
 581         }
 582         case IB_QPT_SMI:
 583         case IB_QPT_GSI:
 584         {
 585                 /* Don't allow userspace to create special QPs */
 586                 if (udata)
 587                         return ERR_PTR(-EINVAL);
 588
 589                 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
 590                 if (!qp)
 591                         return ERR_PTR(-ENOMEM);
 592
 593                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 594
 595                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 596                                       to_mcq(init_attr->send_cq),
 597                                       to_mcq(init_attr->recv_cq),
 598                                       init_attr->sq_sig_type, &init_attr->cap,
 599                                       qp->ibqp.qp_num, init_attr->port_num,
 600                                       to_msqp(qp), udata);
 601                 break;
 602         }
 603         default:
 604                 /* Don't support raw QPs */
 605                 return ERR_PTR(-ENOSYS);
 606         }
 607
 608         if (err) {
 609                 kfree(qp);
 610                 return ERR_PTR(err);
 611         }
 612
 613         init_attr->cap.max_send_wr     = qp->sq.max;
 614         init_attr->cap.max_recv_wr     = qp->rq.max;
 615         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 616         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 617         init_attr->cap.max_inline_data = qp->max_inline_data;
 618
 619         return &qp->ibqp;
 620 }
 621
 622 static int mthca_destroy_qp(struct ib_qp *qp)
 623 {
 624         if (qp->uobject) {
 625                 mthca_unmap_user_db(to_mdev(qp->device),
 626                                     &to_mucontext(qp->uobject->context)->uar,
 627                                     to_mucontext(qp->uobject->context)->db_tab,
 628                                     to_mqp(qp)->sq.db_index);
 629                 mthca_unmap_user_db(to_mdev(qp->device),
 630                                     &to_mucontext(qp->uobject->context)->uar,
 631                                     to_mucontext(qp->uobject->context)->db_tab,
 632                                     to_mqp(qp)->rq.db_index);
 633         }
 634         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 635         kfree(qp);
 636         return 0;
 637 }
 638
 639 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 640                                      const struct ib_cq_init_attr *attr,
 641                                      struct ib_ucontext *context,
 642                                      struct ib_udata *udata)
 643 {
 644         int entries = attr->cqe;
 645         struct mthca_create_cq ucmd;
 646         struct mthca_cq *cq;
 647         int nent;
 648         int err;
 649
 650         if (attr->flags)
 651                 return ERR_PTR(-EINVAL);
 652
 653         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 654                 return ERR_PTR(-EINVAL);
 655
 656         if (context) {
 657                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 658                         return ERR_PTR(-EFAULT);
 659
 660                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 661                                         to_mucontext(context)->db_tab,
 662                                         ucmd.set_db_index, ucmd.set_db_page);
 663                 if (err)
 664                         return ERR_PTR(err);
 665
 666                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 667                                         to_mucontext(context)->db_tab,
 668                                         ucmd.arm_db_index, ucmd.arm_db_page);
 669                 if (err)
 670                         goto err_unmap_set;
 671         }
 672
 673         cq = kzalloc(sizeof(*cq), GFP_KERNEL);
 674         if (!cq) {
 675                 err = -ENOMEM;
 676                 goto err_unmap_arm;
 677         }
 678
 679         if (context) {
 680                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 681                 cq->set_ci_db_index  = ucmd.set_db_index;
 682                 cq->arm_db_index     = ucmd.arm_db_index;
 683         }
 684
 685         for (nent = 1; nent <= entries; nent <<= 1)
 686                 ; /* nothing */
 687
 688         err = mthca_init_cq(to_mdev(ibdev), nent,
 689                             context ? to_mucontext(context) : NULL,
 690                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 691                             cq);
 692         if (err)
 693                 goto err_free;
 694
 695         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 696                 mthca_free_cq(to_mdev(ibdev), cq);
 697                 err = -EFAULT;
 698                 goto err_free;
 699         }
 700
 701         cq->resize_buf = NULL;
 702
 703         return &cq->ibcq;
 704
 705 err_free:
 706         kfree(cq);
 707
 708 err_unmap_arm:
 709         if (context)
 710                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 711                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 712
 713 err_unmap_set:
 714         if (context)
 715                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 716                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 717
 718         return ERR_PTR(err);
 719 }
 720
 721 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 722                                   int entries)
 723 {
 724         int ret;
 725
 726         spin_lock_irq(&cq->lock);
 727         if (cq->resize_buf) {
 728                 ret = -EBUSY;
 729                 goto unlock;
 730         }
 731
 732         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 733         if (!cq->resize_buf) {
 734                 ret = -ENOMEM;
 735                 goto unlock;
 736         }
 737
 738         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 739
 740         ret = 0;
 741
 742 unlock:
 743         spin_unlock_irq(&cq->lock);
 744
 745         if (ret)
 746                 return ret;
 747
 748         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 749         if (ret) {
 750                 spin_lock_irq(&cq->lock);
 751                 kfree(cq->resize_buf);
 752                 cq->resize_buf = NULL;
 753                 spin_unlock_irq(&cq->lock);
 754                 return ret;
 755         }
 756
 757         cq->resize_buf->cqe = entries - 1;
 758
 759         spin_lock_irq(&cq->lock);
 760         cq->resize_buf->state = CQ_RESIZE_READY;
 761         spin_unlock_irq(&cq->lock);
 762
 763         return 0;
 764 }
 765
 766 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 767 {
 768         struct mthca_dev *dev = to_mdev(ibcq->device);
 769         struct mthca_cq *cq = to_mcq(ibcq);
 770         struct mthca_resize_cq ucmd;
 771         u32 lkey;
 772         int ret;
 773
 774         if (entries < 1 || entries > dev->limits.max_cqes)
 775                 return -EINVAL;
 776
 777         mutex_lock(&cq->mutex);
 778
 779         entries = roundup_pow_of_two(entries + 1);
 780         if (entries == ibcq->cqe + 1) {
 781                 ret = 0;
 782                 goto out;
 783         }
 784
 785         if (cq->is_kernel) {
 786                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 787                 if (ret)
 788                         goto out;
 789                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 790         } else {
 791                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 792                         ret = -EFAULT;
 793                         goto out;
 794                 }
 795                 lkey = ucmd.lkey;
 796         }
 797
 798         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 799
 800         if (ret) {
 801                 if (cq->resize_buf) {
 802                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 803                                           cq->resize_buf->cqe);
 804                         kfree(cq->resize_buf);
 805                         spin_lock_irq(&cq->lock);
 806                         cq->resize_buf = NULL;
 807                         spin_unlock_irq(&cq->lock);
 808                 }
 809                 goto out;
 810         }
 811
 812         if (cq->is_kernel) {
 813                 struct mthca_cq_buf tbuf;
 814                 int tcqe;
 815
 816                 spin_lock_irq(&cq->lock);
 817                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 818                         mthca_cq_resize_copy_cqes(cq);
 819                         tbuf         = cq->buf;
 820                         tcqe         = cq->ibcq.cqe;
 821                         cq->buf      = cq->resize_buf->buf;
 822                         cq->ibcq.cqe = cq->resize_buf->cqe;
 823                 } else {
 824                         tbuf = cq->resize_buf->buf;
 825                         tcqe = cq->resize_buf->cqe;
 826                 }
 827
 828                 kfree(cq->resize_buf);
 829                 cq->resize_buf = NULL;
 830                 spin_unlock_irq(&cq->lock);
 831
 832                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 833         } else
 834                 ibcq->cqe = entries - 1;
 835
 836 out:
 837         mutex_unlock(&cq->mutex);
 838
 839         return ret;
 840 }
 841
 842 static int mthca_destroy_cq(struct ib_cq *cq)
 843 {
 844         if (cq->uobject) {
 845                 mthca_unmap_user_db(to_mdev(cq->device),
 846                                     &to_mucontext(cq->uobject->context)->uar,
 847                                     to_mucontext(cq->uobject->context)->db_tab,
 848                                     to_mcq(cq)->arm_db_index);
 849                 mthca_unmap_user_db(to_mdev(cq->device),
 850                                     &to_mucontext(cq->uobject->context)->uar,
 851                                     to_mucontext(cq->uobject->context)->db_tab,
 852                                     to_mcq(cq)->set_ci_db_index);
 853         }
 854         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 855         kfree(cq);
 856
 857         return 0;
 858 }
 859
 860 static inline u32 convert_access(int acc)
 861 {
 862         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 863                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 864                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 865                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 866                MTHCA_MPT_FLAG_LOCAL_READ;
 867 }
 868
 869 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 870 {
 871         struct mthca_mr *mr;
 872         int err;
 873
 874         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 875         if (!mr)
 876                 return ERR_PTR(-ENOMEM);
 877
 878         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 879                                      to_mpd(pd)->pd_num,
 880                                      convert_access(acc), mr);
 881
 882         if (err) {
 883                 kfree(mr);
 884                 return ERR_PTR(err);
 885         }
 886
 887         mr->umem = NULL;
 888
 889         return &mr->ibmr;
 890 }
 891
 892 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 893                                        u64 virt, int acc, struct ib_udata *udata)
 894 {
 895         struct mthca_dev *dev = to_mdev(pd->device);
 896         struct sg_dma_page_iter sg_iter;
 897         struct mthca_ucontext *context = rdma_udata_to_drv_context(
 898                 udata, struct mthca_ucontext, ibucontext);
 899         struct mthca_mr *mr;
 900         struct mthca_reg_mr ucmd;
 901         u64 *pages;
 902         int n, i;
 903         int err = 0;
 904         int write_mtt_size;
 905
 906         if (udata->inlen < sizeof ucmd) {
 907                 if (!context->reg_mr_warned) {
 908                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
 909                                    current->comm);
 910                         mthca_warn(dev, "  Update libmthca to fix this.\n");
 911                 }
 912                 ++context->reg_mr_warned;
 913                 ucmd.mr_attrs = 0;
 914         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 915                 return ERR_PTR(-EFAULT);
 916
 917         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 918         if (!mr)
 919                 return ERR_PTR(-ENOMEM);
 920
 921         mr->umem = ib_umem_get(udata, start, length, acc,
 922                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
 923
 924         if (IS_ERR(mr->umem)) {
 925                 err = PTR_ERR(mr->umem);
 926                 goto err;
 927         }
 928
 929         n = mr->umem->nmap;
 930
 931         mr->mtt = mthca_alloc_mtt(dev, n);
 932         if (IS_ERR(mr->mtt)) {
 933                 err = PTR_ERR(mr->mtt);
 934                 goto err_umem;
 935         }
 936
 937         pages = (u64 *) __get_free_page(GFP_KERNEL);
 938         if (!pages) {
 939                 err = -ENOMEM;
 940                 goto err_mtt;
 941         }
 942
 943         i = n = 0;
 944
 945         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
 946
 947         for_each_sg_dma_page(mr->umem->sg_head.sgl, &sg_iter, mr->umem->nmap, 0) {
 948                 pages[i++] = sg_page_iter_dma_address(&sg_iter);
 949
 950                 /*
 951                  * Be friendly to write_mtt and pass it chunks
 952                  * of appropriate size.
 953                  */
 954                 if (i == write_mtt_size) {
 955                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 956                         if (err)
 957                                 goto mtt_done;
 958                         n += i;
 959                         i = 0;
 960                 }
 961         }
 962
 963         if (i)
 964                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
 965 mtt_done:
 966         free_page((unsigned long) pages);
 967         if (err)
 968                 goto err_mtt;
 969
 970         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, PAGE_SHIFT, virt, length,
 971                              convert_access(acc), mr);
 972
 973         if (err)
 974                 goto err_mtt;
 975
 976         return &mr->ibmr;
 977
 978 err_mtt:
 979         mthca_free_mtt(dev, mr->mtt);
 980
 981 err_umem:
 982         ib_umem_release(mr->umem);
 983
 984 err:
 985         kfree(mr);
 986         return ERR_PTR(err);
 987 }
 988
 989 static int mthca_dereg_mr(struct ib_mr *mr)
 990 {
 991         struct mthca_mr *mmr = to_mmr(mr);
 992
 993         mthca_free_mr(to_mdev(mr->device), mmr);
 994         if (mmr->umem)
 995                 ib_umem_release(mmr->umem);
 996         kfree(mmr);
 997
 998         return 0;
 999 }
1000
1001 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1002                                       struct ib_fmr_attr *fmr_attr)
1003 {
1004         struct mthca_fmr *fmr;
1005         int err;
1006
1007         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1008         if (!fmr)
1009                 return ERR_PTR(-ENOMEM);
1010
1011         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1012         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1013                              convert_access(mr_access_flags), fmr);
1014
1015         if (err) {
1016                 kfree(fmr);
1017                 return ERR_PTR(err);
1018         }
1019
1020         return &fmr->ibmr;
1021 }
1022
1023 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1024 {
1025         struct mthca_fmr *mfmr = to_mfmr(fmr);
1026         int err;
1027
1028         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1029         if (err)
1030                 return err;
1031
1032         kfree(mfmr);
1033         return 0;
1034 }
1035
1036 static int mthca_unmap_fmr(struct list_head *fmr_list)
1037 {
1038         struct ib_fmr *fmr;
1039         int err;
1040         struct mthca_dev *mdev = NULL;
1041
1042         list_for_each_entry(fmr, fmr_list, list) {
1043                 if (mdev && to_mdev(fmr->device) != mdev)
1044                         return -EINVAL;
1045                 mdev = to_mdev(fmr->device);
1046         }
1047
1048         if (!mdev)
1049                 return 0;
1050
1051         if (mthca_is_memfree(mdev)) {
1052                 list_for_each_entry(fmr, fmr_list, list)
1053                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1054
1055                 wmb();
1056         } else
1057                 list_for_each_entry(fmr, fmr_list, list)
1058                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1059
1060         err = mthca_SYNC_TPT(mdev);
1061         return err;
1062 }
1063
1064 static ssize_t hw_rev_show(struct device *device,
1065                            struct device_attribute *attr, char *buf)
1066 {
1067         struct mthca_dev *dev =
1068                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1069
1070         return sprintf(buf, "%x\n", dev->rev_id);
1071 }
1072 static DEVICE_ATTR_RO(hw_rev);
1073
1074 static ssize_t hca_type_show(struct device *device,
1075                              struct device_attribute *attr, char *buf)
1076 {
1077         struct mthca_dev *dev =
1078                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1079
1080         switch (dev->pdev->device) {
1081         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1082                 return sprintf(buf, "MT23108\n");
1083         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1084                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1085         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1086                 return sprintf(buf, "MT25208\n");
1087         case PCI_DEVICE_ID_MELLANOX_SINAI:
1088         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1089                 return sprintf(buf, "MT25204\n");
1090         default:
1091                 return sprintf(buf, "unknown\n");
1092         }
1093 }
1094 static DEVICE_ATTR_RO(hca_type);
1095
1096 static ssize_t board_id_show(struct device *device,
1097                              struct device_attribute *attr, char *buf)
1098 {
1099         struct mthca_dev *dev =
1100                 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
1101
1102         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1103 }
1104 static DEVICE_ATTR_RO(board_id);
1105
1106 static struct attribute *mthca_dev_attributes[] = {
1107         &dev_attr_hw_rev.attr,
1108         &dev_attr_hca_type.attr,
1109         &dev_attr_board_id.attr,
1110         NULL
1111 };
1112
1113 static const struct attribute_group mthca_attr_group = {
1114         .attrs = mthca_dev_attributes,
1115 };
1116
1117 static int mthca_init_node_data(struct mthca_dev *dev)
1118 {
1119         struct ib_smp *in_mad  = NULL;
1120         struct ib_smp *out_mad = NULL;
1121         int err = -ENOMEM;
1122
1123         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1124         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1125         if (!in_mad || !out_mad)
1126                 goto out;
1127
1128         init_query_mad(in_mad);
1129         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1130
1131         err = mthca_MAD_IFC(dev, 1, 1,
1132                             1, NULL, NULL, in_mad, out_mad);
1133         if (err)
1134                 goto out;
1135
1136         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1137
1138         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1139
1140         err = mthca_MAD_IFC(dev, 1, 1,
1141                             1, NULL, NULL, in_mad, out_mad);
1142         if (err)
1143                 goto out;
1144
1145         if (mthca_is_memfree(dev))
1146                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1147         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1148
1149 out:
1150         kfree(in_mad);
1151         kfree(out_mad);
1152         return err;
1153 }
1154
1155 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1156                                 struct ib_port_immutable *immutable)
1157 {
1158         struct ib_port_attr attr;
1159         int err;
1160
1161         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1162
1163         err = ib_query_port(ibdev, port_num, &attr);
1164         if (err)
1165                 return err;
1166
1167         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1168         immutable->gid_tbl_len = attr.gid_tbl_len;
1169         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1170
1171         return 0;
1172 }
1173
1174 static void get_dev_fw_str(struct ib_device *device, char *str)
1175 {
1176         struct mthca_dev *dev =
1177                 container_of(device, struct mthca_dev, ib_dev);
1178         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1179                  (int) (dev->fw_ver >> 32),
1180                  (int) (dev->fw_ver >> 16) & 0xffff,
1181                  (int) dev->fw_ver & 0xffff);
1182 }
1183
1184 static const struct ib_device_ops mthca_dev_ops = {
1185         .alloc_pd = mthca_alloc_pd,
1186         .alloc_ucontext = mthca_alloc_ucontext,
1187         .attach_mcast = mthca_multicast_attach,
1188         .create_ah = mthca_ah_create,
1189         .create_cq = mthca_create_cq,
1190         .create_qp = mthca_create_qp,
1191         .dealloc_pd = mthca_dealloc_pd,
1192         .dealloc_ucontext = mthca_dealloc_ucontext,
1193         .dereg_mr = mthca_dereg_mr,
1194         .destroy_ah = mthca_ah_destroy,
1195         .destroy_cq = mthca_destroy_cq,
1196         .destroy_qp = mthca_destroy_qp,
1197         .detach_mcast = mthca_multicast_detach,
1198         .get_dev_fw_str = get_dev_fw_str,
1199         .get_dma_mr = mthca_get_dma_mr,
1200         .get_port_immutable = mthca_port_immutable,
1201         .mmap = mthca_mmap_uar,
1202         .modify_device = mthca_modify_device,
1203         .modify_port = mthca_modify_port,
1204         .modify_qp = mthca_modify_qp,
1205         .poll_cq = mthca_poll_cq,
1206         .process_mad = mthca_process_mad,
1207         .query_ah = mthca_ah_query,
1208         .query_device = mthca_query_device,
1209         .query_gid = mthca_query_gid,
1210         .query_pkey = mthca_query_pkey,
1211         .query_port = mthca_query_port,
1212         .query_qp = mthca_query_qp,
1213         .reg_user_mr = mthca_reg_user_mr,
1214         .resize_cq = mthca_resize_cq,
1215         INIT_RDMA_OBJ_SIZE(ib_pd, mthca_pd, ibpd),
1216 };
1217
1218 static const struct ib_device_ops mthca_dev_arbel_srq_ops = {
1219         .create_srq = mthca_create_srq,
1220         .destroy_srq = mthca_destroy_srq,
1221         .modify_srq = mthca_modify_srq,
1222         .post_srq_recv = mthca_arbel_post_srq_recv,
1223         .query_srq = mthca_query_srq,
1224 };
1225
1226 static const struct ib_device_ops mthca_dev_tavor_srq_ops = {
1227         .create_srq = mthca_create_srq,
1228         .destroy_srq = mthca_destroy_srq,
1229         .modify_srq = mthca_modify_srq,
1230         .post_srq_recv = mthca_tavor_post_srq_recv,
1231         .query_srq = mthca_query_srq,
1232 };
1233
1234 static const struct ib_device_ops mthca_dev_arbel_fmr_ops = {
1235         .alloc_fmr = mthca_alloc_fmr,
1236         .dealloc_fmr = mthca_dealloc_fmr,
1237         .map_phys_fmr = mthca_arbel_map_phys_fmr,
1238         .unmap_fmr = mthca_unmap_fmr,
1239 };
1240
1241 static const struct ib_device_ops mthca_dev_tavor_fmr_ops = {
1242         .alloc_fmr = mthca_alloc_fmr,
1243         .dealloc_fmr = mthca_dealloc_fmr,
1244         .map_phys_fmr = mthca_tavor_map_phys_fmr,
1245         .unmap_fmr = mthca_unmap_fmr,
1246 };
1247
1248 static const struct ib_device_ops mthca_dev_arbel_ops = {
1249         .post_recv = mthca_arbel_post_receive,
1250         .post_send = mthca_arbel_post_send,
1251         .req_notify_cq = mthca_arbel_arm_cq,
1252 };
1253
1254 static const struct ib_device_ops mthca_dev_tavor_ops = {
1255         .post_recv = mthca_tavor_post_receive,
1256         .post_send = mthca_tavor_post_send,
1257         .req_notify_cq = mthca_tavor_arm_cq,
1258 };
1259
1260 int mthca_register_device(struct mthca_dev *dev)
1261 {
1262         int ret;
1263
1264         ret = mthca_init_node_data(dev);
1265         if (ret)
1266                 return ret;
1267
1268         dev->ib_dev.owner                = THIS_MODULE;
1269
1270         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1271         dev->ib_dev.uverbs_cmd_mask      =
1272                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1273                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1274                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1275                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1276                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1277                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1278                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1279                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1280                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1281                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1282                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1283                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1284                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1285                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1286                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1287                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1288                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1289         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1290         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1291         dev->ib_dev.num_comp_vectors     = 1;
1292         dev->ib_dev.dev.parent           = &dev->pdev->dev;
1293
1294         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1295                 dev->ib_dev.uverbs_cmd_mask     |=
1296                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1297                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1298                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1299                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1300
1301                 if (mthca_is_memfree(dev))
1302                         ib_set_device_ops(&dev->ib_dev,
1303                                           &mthca_dev_arbel_srq_ops);
1304                 else
1305                         ib_set_device_ops(&dev->ib_dev,
1306                                           &mthca_dev_tavor_srq_ops);
1307         }
1308
1309         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1310                 if (mthca_is_memfree(dev))
1311                         ib_set_device_ops(&dev->ib_dev,
1312                                           &mthca_dev_arbel_fmr_ops);
1313                 else
1314                         ib_set_device_ops(&dev->ib_dev,
1315                                           &mthca_dev_tavor_fmr_ops);
1316         }
1317
1318         ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops);
1319
1320         if (mthca_is_memfree(dev))
1321                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_arbel_ops);
1322         else
1323                 ib_set_device_ops(&dev->ib_dev, &mthca_dev_tavor_ops);
1324
1325         mutex_init(&dev->cap_mask_mutex);
1326
1327         rdma_set_device_sysfs_group(&dev->ib_dev, &mthca_attr_group);
1328         dev->ib_dev.driver_id = RDMA_DRIVER_MTHCA;
1329         ret = ib_register_device(&dev->ib_dev, "mthca%d");
1330         if (ret)
1331                 return ret;
1332
1333         mthca_start_catas_poll(dev);
1334
1335         return 0;
1336 }
1337
1338 void mthca_unregister_device(struct mthca_dev *dev)
1339 {
1340         mthca_stop_catas_poll(dev);
1341         ib_unregister_device(&dev->ib_dev);
1342 }