drivers/infiniband/hw/mthca/mthca_provider.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
   7  *
   8  * This software is available to you under a choice of one of two
   9  * licenses.  You may choose to be licensed under the terms of the GNU
  10  * General Public License (GPL) Version 2, available from the file
  11  * COPYING in the main directory of this source tree, or the
  12  * OpenIB.org BSD license below:
  13  *
  14  *     Redistribution and use in source and binary forms, with or
  15  *     without modification, are permitted provided that the following
  16  *     conditions are met:
  17  *
  18  *      - Redistributions of source code must retain the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer.
  21  *
  22  *      - Redistributions in binary form must reproduce the above
  23  *        copyright notice, this list of conditions and the following
  24  *        disclaimer in the documentation and/or other materials
  25  *        provided with the distribution.
  26  *
  27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  34  * SOFTWARE.
  35  *
  36  * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
  37  */
  38
  39 #include <rdma/ib_smi.h>
  40 #include <rdma/ib_umem.h>
  41 #include <rdma/ib_user_verbs.h>
  42
  43 #include <linux/sched.h>
  44 #include <linux/mm.h>
  45
  46 #include "mthca_dev.h"
  47 #include "mthca_cmd.h"
  48 #include "mthca_user.h"
  49 #include "mthca_memfree.h"
  50
  51 static void init_query_mad(struct ib_smp *mad)
  52 {
  53         mad->base_version  = 1;
  54         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  55         mad->class_version = 1;
  56         mad->method        = IB_MGMT_METHOD_GET;
  57 }
  58
  59 static int mthca_query_device(struct ib_device *ibdev,
  60                               struct ib_device_attr *props)
  61 {
  62         struct ib_smp *in_mad  = NULL;
  63         struct ib_smp *out_mad = NULL;
  64         int err = -ENOMEM;
  65         struct mthca_dev *mdev = to_mdev(ibdev);
  66
  67         u8 status;
  68
  69         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  70         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  71         if (!in_mad || !out_mad)
  72                 goto out;
  73
  74         memset(props, 0, sizeof *props);
  75
  76         props->fw_ver              = mdev->fw_ver;
  77
  78         init_query_mad(in_mad);
  79         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  80
  81         err = mthca_MAD_IFC(mdev, 1, 1,
  82                             1, NULL, NULL, in_mad, out_mad,
  83                             &status);
  84         if (err)
  85                 goto out;
  86         if (status) {
  87                 err = -EINVAL;
  88                 goto out;
  89         }
  90
  91         props->device_cap_flags    = mdev->device_cap_flags;
  92         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  93                 0xffffff;
  94         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  95         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  96         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  97
  98         props->max_mr_size         = ~0ull;
  99         props->page_size_cap       = mdev->limits.page_size_cap;
 100         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
 101         props->max_qp_wr           = mdev->limits.max_wqes;
 102         props->max_sge             = 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         u8 status;
 146
 147         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 148         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 149         if (!in_mad || !out_mad)
 150                 goto out;
 151
 152         memset(props, 0, sizeof *props);
 153
 154         init_query_mad(in_mad);
 155         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 156         in_mad->attr_mod = cpu_to_be32(port);
 157
 158         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 159                             port, NULL, NULL, in_mad, out_mad,
 160                             &status);
 161         if (err)
 162                 goto out;
 163         if (status) {
 164                 err = -EINVAL;
 165                 goto out;
 166         }
 167
 168         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 169         props->lmc               = out_mad->data[34] & 0x7;
 170         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 171         props->sm_sl             = out_mad->data[36] & 0xf;
 172         props->state             = out_mad->data[32] & 0xf;
 173         props->phys_state        = out_mad->data[33] >> 4;
 174         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 175         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 176         props->max_msg_sz        = 0x80000000;
 177         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 178         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 179         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 180         props->active_width      = out_mad->data[31] & 0xf;
 181         props->active_speed      = out_mad->data[35] >> 4;
 182         props->max_mtu           = out_mad->data[41] & 0xf;
 183         props->active_mtu        = out_mad->data[36] >> 4;
 184         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 185         props->max_vl_num        = out_mad->data[37] >> 4;
 186         props->init_type_reply   = out_mad->data[41] >> 4;
 187
 188  out:
 189         kfree(in_mad);
 190         kfree(out_mad);
 191         return err;
 192 }
 193
 194 static int mthca_modify_device(struct ib_device *ibdev,
 195                                int mask,
 196                                struct ib_device_modify *props)
 197 {
 198         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 199                 return -EOPNOTSUPP;
 200
 201         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 202                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 203                         return -ERESTARTSYS;
 204                 memcpy(ibdev->node_desc, props->node_desc, 64);
 205                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 206         }
 207
 208         return 0;
 209 }
 210
 211 static int mthca_modify_port(struct ib_device *ibdev,
 212                              u8 port, int port_modify_mask,
 213                              struct ib_port_modify *props)
 214 {
 215         struct mthca_set_ib_param set_ib;
 216         struct ib_port_attr attr;
 217         int err;
 218         u8 status;
 219
 220         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 221                 return -ERESTARTSYS;
 222
 223         err = mthca_query_port(ibdev, port, &attr);
 224         if (err)
 225                 goto out;
 226
 227         set_ib.set_si_guid     = 0;
 228         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 229
 230         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 231                 ~props->clr_port_cap_mask;
 232
 233         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
 234         if (err)
 235                 goto out;
 236         if (status) {
 237                 err = -EINVAL;
 238                 goto out;
 239         }
 240
 241 out:
 242         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 243         return err;
 244 }
 245
 246 static int mthca_query_pkey(struct ib_device *ibdev,
 247                             u8 port, u16 index, u16 *pkey)
 248 {
 249         struct ib_smp *in_mad  = NULL;
 250         struct ib_smp *out_mad = NULL;
 251         int err = -ENOMEM;
 252         u8 status;
 253
 254         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 255         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 256         if (!in_mad || !out_mad)
 257                 goto out;
 258
 259         init_query_mad(in_mad);
 260         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 261         in_mad->attr_mod = cpu_to_be32(index / 32);
 262
 263         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 264                             port, NULL, NULL, in_mad, out_mad,
 265                             &status);
 266         if (err)
 267                 goto out;
 268         if (status) {
 269                 err = -EINVAL;
 270                 goto out;
 271         }
 272
 273         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 274
 275  out:
 276         kfree(in_mad);
 277         kfree(out_mad);
 278         return err;
 279 }
 280
 281 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 282                            int index, union ib_gid *gid)
 283 {
 284         struct ib_smp *in_mad  = NULL;
 285         struct ib_smp *out_mad = NULL;
 286         int err = -ENOMEM;
 287         u8 status;
 288
 289         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 290         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 291         if (!in_mad || !out_mad)
 292                 goto out;
 293
 294         init_query_mad(in_mad);
 295         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 296         in_mad->attr_mod = cpu_to_be32(port);
 297
 298         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 299                             port, NULL, NULL, in_mad, out_mad,
 300                             &status);
 301         if (err)
 302                 goto out;
 303         if (status) {
 304                 err = -EINVAL;
 305                 goto out;
 306         }
 307
 308         memcpy(gid->raw, out_mad->data + 8, 8);
 309
 310         init_query_mad(in_mad);
 311         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 312         in_mad->attr_mod = cpu_to_be32(index / 8);
 313
 314         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 315                             port, NULL, NULL, in_mad, out_mad,
 316                             &status);
 317         if (err)
 318                 goto out;
 319         if (status) {
 320                 err = -EINVAL;
 321                 goto out;
 322         }
 323
 324         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 325
 326  out:
 327         kfree(in_mad);
 328         kfree(out_mad);
 329         return err;
 330 }
 331
 332 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 333                                                 struct ib_udata *udata)
 334 {
 335         struct mthca_alloc_ucontext_resp uresp;
 336         struct mthca_ucontext           *context;
 337         int                              err;
 338
 339         memset(&uresp, 0, sizeof uresp);
 340
 341         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 342         if (mthca_is_memfree(to_mdev(ibdev)))
 343                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 344         else
 345                 uresp.uarc_size = 0;
 346
 347         context = kmalloc(sizeof *context, GFP_KERNEL);
 348         if (!context)
 349                 return ERR_PTR(-ENOMEM);
 350
 351         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 352         if (err) {
 353                 kfree(context);
 354                 return ERR_PTR(err);
 355         }
 356
 357         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 358         if (IS_ERR(context->db_tab)) {
 359                 err = PTR_ERR(context->db_tab);
 360                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 361                 kfree(context);
 362                 return ERR_PTR(err);
 363         }
 364
 365         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 366                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 367                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 368                 kfree(context);
 369                 return ERR_PTR(-EFAULT);
 370         }
 371
 372         context->reg_mr_warned = 0;
 373
 374         return &context->ibucontext;
 375 }
 376
 377 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 378 {
 379         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 380                                   to_mucontext(context)->db_tab);
 381         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 382         kfree(to_mucontext(context));
 383
 384         return 0;
 385 }
 386
 387 static int mthca_mmap_uar(struct ib_ucontext *context,
 388                           struct vm_area_struct *vma)
 389 {
 390         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 391                 return -EINVAL;
 392
 393         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 394
 395         if (io_remap_pfn_range(vma, vma->vm_start,
 396                                to_mucontext(context)->uar.pfn,
 397                                PAGE_SIZE, vma->vm_page_prot))
 398                 return -EAGAIN;
 399
 400         return 0;
 401 }
 402
 403 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 404                                     struct ib_ucontext *context,
 405                                     struct ib_udata *udata)
 406 {
 407         struct mthca_pd *pd;
 408         int err;
 409
 410         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 411         if (!pd)
 412                 return ERR_PTR(-ENOMEM);
 413
 414         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 415         if (err) {
 416                 kfree(pd);
 417                 return ERR_PTR(err);
 418         }
 419
 420         if (context) {
 421                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 422                         mthca_pd_free(to_mdev(ibdev), pd);
 423                         kfree(pd);
 424                         return ERR_PTR(-EFAULT);
 425                 }
 426         }
 427
 428         return &pd->ibpd;
 429 }
 430
 431 static int mthca_dealloc_pd(struct ib_pd *pd)
 432 {
 433         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 434         kfree(pd);
 435
 436         return 0;
 437 }
 438
 439 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 440                                      struct ib_ah_attr *ah_attr)
 441 {
 442         int err;
 443         struct mthca_ah *ah;
 444
 445         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 446         if (!ah)
 447                 return ERR_PTR(-ENOMEM);
 448
 449         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 450         if (err) {
 451                 kfree(ah);
 452                 return ERR_PTR(err);
 453         }
 454
 455         return &ah->ibah;
 456 }
 457
 458 static int mthca_ah_destroy(struct ib_ah *ah)
 459 {
 460         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 461         kfree(ah);
 462
 463         return 0;
 464 }
 465
 466 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 467                                        struct ib_srq_init_attr *init_attr,
 468                                        struct ib_udata *udata)
 469 {
 470         struct mthca_create_srq ucmd;
 471         struct mthca_ucontext *context = NULL;
 472         struct mthca_srq *srq;
 473         int err;
 474
 475         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 476         if (!srq)
 477                 return ERR_PTR(-ENOMEM);
 478
 479         if (pd->uobject) {
 480                 context = to_mucontext(pd->uobject->context);
 481
 482                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 483                         err = -EFAULT;
 484                         goto err_free;
 485                 }
 486
 487                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 488                                         context->db_tab, ucmd.db_index,
 489                                         ucmd.db_page);
 490
 491                 if (err)
 492                         goto err_free;
 493
 494                 srq->mr.ibmr.lkey = ucmd.lkey;
 495                 srq->db_index     = ucmd.db_index;
 496         }
 497
 498         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 499                               &init_attr->attr, srq);
 500
 501         if (err && pd->uobject)
 502                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 503                                     context->db_tab, ucmd.db_index);
 504
 505         if (err)
 506                 goto err_free;
 507
 508         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 509                 mthca_free_srq(to_mdev(pd->device), srq);
 510                 err = -EFAULT;
 511                 goto err_free;
 512         }
 513
 514         return &srq->ibsrq;
 515
 516 err_free:
 517         kfree(srq);
 518
 519         return ERR_PTR(err);
 520 }
 521
 522 static int mthca_destroy_srq(struct ib_srq *srq)
 523 {
 524         struct mthca_ucontext *context;
 525
 526         if (srq->uobject) {
 527                 context = to_mucontext(srq->uobject->context);
 528
 529                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 530                                     context->db_tab, to_msrq(srq)->db_index);
 531         }
 532
 533         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 534         kfree(srq);
 535
 536         return 0;
 537 }
 538
 539 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 540                                      struct ib_qp_init_attr *init_attr,
 541                                      struct ib_udata *udata)
 542 {
 543         struct mthca_create_qp ucmd;
 544         struct mthca_qp *qp;
 545         int err;
 546
 547         if (init_attr->create_flags)
 548                 return ERR_PTR(-EINVAL);
 549
 550         switch (init_attr->qp_type) {
 551         case IB_QPT_RC:
 552         case IB_QPT_UC:
 553         case IB_QPT_UD:
 554         {
 555                 struct mthca_ucontext *context;
 556
 557                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 558                 if (!qp)
 559                         return ERR_PTR(-ENOMEM);
 560
 561                 if (pd->uobject) {
 562                         context = to_mucontext(pd->uobject->context);
 563
 564                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 565                                 kfree(qp);
 566                                 return ERR_PTR(-EFAULT);
 567                         }
 568
 569                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 570                                                 context->db_tab,
 571                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 572                         if (err) {
 573                                 kfree(qp);
 574                                 return ERR_PTR(err);
 575                         }
 576
 577                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 578                                                 context->db_tab,
 579                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 580                         if (err) {
 581                                 mthca_unmap_user_db(to_mdev(pd->device),
 582                                                     &context->uar,
 583                                                     context->db_tab,
 584                                                     ucmd.sq_db_index);
 585                                 kfree(qp);
 586                                 return ERR_PTR(err);
 587                         }
 588
 589                         qp->mr.ibmr.lkey = ucmd.lkey;
 590                         qp->sq.db_index  = ucmd.sq_db_index;
 591                         qp->rq.db_index  = ucmd.rq_db_index;
 592                 }
 593
 594                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 595                                      to_mcq(init_attr->send_cq),
 596                                      to_mcq(init_attr->recv_cq),
 597                                      init_attr->qp_type, init_attr->sq_sig_type,
 598                                      &init_attr->cap, qp);
 599
 600                 if (err && pd->uobject) {
 601                         context = to_mucontext(pd->uobject->context);
 602
 603                         mthca_unmap_user_db(to_mdev(pd->device),
 604                                             &context->uar,
 605                                             context->db_tab,
 606                                             ucmd.sq_db_index);
 607                         mthca_unmap_user_db(to_mdev(pd->device),
 608                                             &context->uar,
 609                                             context->db_tab,
 610                                             ucmd.rq_db_index);
 611                 }
 612
 613                 qp->ibqp.qp_num = qp->qpn;
 614                 break;
 615         }
 616         case IB_QPT_SMI:
 617         case IB_QPT_GSI:
 618         {
 619                 /* Don't allow userspace to create special QPs */
 620                 if (pd->uobject)
 621                         return ERR_PTR(-EINVAL);
 622
 623                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 624                 if (!qp)
 625                         return ERR_PTR(-ENOMEM);
 626
 627                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 628
 629                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 630                                       to_mcq(init_attr->send_cq),
 631                                       to_mcq(init_attr->recv_cq),
 632                                       init_attr->sq_sig_type, &init_attr->cap,
 633                                       qp->ibqp.qp_num, init_attr->port_num,
 634                                       to_msqp(qp));
 635                 break;
 636         }
 637         default:
 638                 /* Don't support raw QPs */
 639                 return ERR_PTR(-ENOSYS);
 640         }
 641
 642         if (err) {
 643                 kfree(qp);
 644                 return ERR_PTR(err);
 645         }
 646
 647         init_attr->cap.max_send_wr     = qp->sq.max;
 648         init_attr->cap.max_recv_wr     = qp->rq.max;
 649         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 650         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 651         init_attr->cap.max_inline_data = qp->max_inline_data;
 652
 653         return &qp->ibqp;
 654 }
 655
 656 static int mthca_destroy_qp(struct ib_qp *qp)
 657 {
 658         if (qp->uobject) {
 659                 mthca_unmap_user_db(to_mdev(qp->device),
 660                                     &to_mucontext(qp->uobject->context)->uar,
 661                                     to_mucontext(qp->uobject->context)->db_tab,
 662                                     to_mqp(qp)->sq.db_index);
 663                 mthca_unmap_user_db(to_mdev(qp->device),
 664                                     &to_mucontext(qp->uobject->context)->uar,
 665                                     to_mucontext(qp->uobject->context)->db_tab,
 666                                     to_mqp(qp)->rq.db_index);
 667         }
 668         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 669         kfree(qp);
 670         return 0;
 671 }
 672
 673 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
 674                                      int comp_vector,
 675                                      struct ib_ucontext *context,
 676                                      struct ib_udata *udata)
 677 {
 678         struct mthca_create_cq ucmd;
 679         struct mthca_cq *cq;
 680         int nent;
 681         int err;
 682
 683         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 684                 return ERR_PTR(-EINVAL);
 685
 686         if (context) {
 687                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 688                         return ERR_PTR(-EFAULT);
 689
 690                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 691                                         to_mucontext(context)->db_tab,
 692                                         ucmd.set_db_index, ucmd.set_db_page);
 693                 if (err)
 694                         return ERR_PTR(err);
 695
 696                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 697                                         to_mucontext(context)->db_tab,
 698                                         ucmd.arm_db_index, ucmd.arm_db_page);
 699                 if (err)
 700                         goto err_unmap_set;
 701         }
 702
 703         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 704         if (!cq) {
 705                 err = -ENOMEM;
 706                 goto err_unmap_arm;
 707         }
 708
 709         if (context) {
 710                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 711                 cq->set_ci_db_index  = ucmd.set_db_index;
 712                 cq->arm_db_index     = ucmd.arm_db_index;
 713         }
 714
 715         for (nent = 1; nent <= entries; nent <<= 1)
 716                 ; /* nothing */
 717
 718         err = mthca_init_cq(to_mdev(ibdev), nent,
 719                             context ? to_mucontext(context) : NULL,
 720                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 721                             cq);
 722         if (err)
 723                 goto err_free;
 724
 725         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 726                 mthca_free_cq(to_mdev(ibdev), cq);
 727                 goto err_free;
 728         }
 729
 730         cq->resize_buf = NULL;
 731
 732         return &cq->ibcq;
 733
 734 err_free:
 735         kfree(cq);
 736
 737 err_unmap_arm:
 738         if (context)
 739                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 740                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 741
 742 err_unmap_set:
 743         if (context)
 744                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 745                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 746
 747         return ERR_PTR(err);
 748 }
 749
 750 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 751                                   int entries)
 752 {
 753         int ret;
 754
 755         spin_lock_irq(&cq->lock);
 756         if (cq->resize_buf) {
 757                 ret = -EBUSY;
 758                 goto unlock;
 759         }
 760
 761         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 762         if (!cq->resize_buf) {
 763                 ret = -ENOMEM;
 764                 goto unlock;
 765         }
 766
 767         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 768
 769         ret = 0;
 770
 771 unlock:
 772         spin_unlock_irq(&cq->lock);
 773
 774         if (ret)
 775                 return ret;
 776
 777         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 778         if (ret) {
 779                 spin_lock_irq(&cq->lock);
 780                 kfree(cq->resize_buf);
 781                 cq->resize_buf = NULL;
 782                 spin_unlock_irq(&cq->lock);
 783                 return ret;
 784         }
 785
 786         cq->resize_buf->cqe = entries - 1;
 787
 788         spin_lock_irq(&cq->lock);
 789         cq->resize_buf->state = CQ_RESIZE_READY;
 790         spin_unlock_irq(&cq->lock);
 791
 792         return 0;
 793 }
 794
 795 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 796 {
 797         struct mthca_dev *dev = to_mdev(ibcq->device);
 798         struct mthca_cq *cq = to_mcq(ibcq);
 799         struct mthca_resize_cq ucmd;
 800         u32 lkey;
 801         u8 status;
 802         int ret;
 803
 804         if (entries < 1 || entries > dev->limits.max_cqes)
 805                 return -EINVAL;
 806
 807         mutex_lock(&cq->mutex);
 808
 809         entries = roundup_pow_of_two(entries + 1);
 810         if (entries == ibcq->cqe + 1) {
 811                 ret = 0;
 812                 goto out;
 813         }
 814
 815         if (cq->is_kernel) {
 816                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 817                 if (ret)
 818                         goto out;
 819                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 820         } else {
 821                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 822                         ret = -EFAULT;
 823                         goto out;
 824                 }
 825                 lkey = ucmd.lkey;
 826         }
 827
 828         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
 829         if (status)
 830                 ret = -EINVAL;
 831
 832         if (ret) {
 833                 if (cq->resize_buf) {
 834                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 835                                           cq->resize_buf->cqe);
 836                         kfree(cq->resize_buf);
 837                         spin_lock_irq(&cq->lock);
 838                         cq->resize_buf = NULL;
 839                         spin_unlock_irq(&cq->lock);
 840                 }
 841                 goto out;
 842         }
 843
 844         if (cq->is_kernel) {
 845                 struct mthca_cq_buf tbuf;
 846                 int tcqe;
 847
 848                 spin_lock_irq(&cq->lock);
 849                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 850                         mthca_cq_resize_copy_cqes(cq);
 851                         tbuf         = cq->buf;
 852                         tcqe         = cq->ibcq.cqe;
 853                         cq->buf      = cq->resize_buf->buf;
 854                         cq->ibcq.cqe = cq->resize_buf->cqe;
 855                 } else {
 856                         tbuf = cq->resize_buf->buf;
 857                         tcqe = cq->resize_buf->cqe;
 858                 }
 859
 860                 kfree(cq->resize_buf);
 861                 cq->resize_buf = NULL;
 862                 spin_unlock_irq(&cq->lock);
 863
 864                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 865         } else
 866                 ibcq->cqe = entries - 1;
 867
 868 out:
 869         mutex_unlock(&cq->mutex);
 870
 871         return ret;
 872 }
 873
 874 static int mthca_destroy_cq(struct ib_cq *cq)
 875 {
 876         if (cq->uobject) {
 877                 mthca_unmap_user_db(to_mdev(cq->device),
 878                                     &to_mucontext(cq->uobject->context)->uar,
 879                                     to_mucontext(cq->uobject->context)->db_tab,
 880                                     to_mcq(cq)->arm_db_index);
 881                 mthca_unmap_user_db(to_mdev(cq->device),
 882                                     &to_mucontext(cq->uobject->context)->uar,
 883                                     to_mucontext(cq->uobject->context)->db_tab,
 884                                     to_mcq(cq)->set_ci_db_index);
 885         }
 886         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 887         kfree(cq);
 888
 889         return 0;
 890 }
 891
 892 static inline u32 convert_access(int acc)
 893 {
 894         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 895                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 896                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 897                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 898                MTHCA_MPT_FLAG_LOCAL_READ;
 899 }
 900
 901 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 902 {
 903         struct mthca_mr *mr;
 904         int err;
 905
 906         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 907         if (!mr)
 908                 return ERR_PTR(-ENOMEM);
 909
 910         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 911                                      to_mpd(pd)->pd_num,
 912                                      convert_access(acc), mr);
 913
 914         if (err) {
 915                 kfree(mr);
 916                 return ERR_PTR(err);
 917         }
 918
 919         mr->umem = NULL;
 920
 921         return &mr->ibmr;
 922 }
 923
 924 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 925                                        struct ib_phys_buf *buffer_list,
 926                                        int                 num_phys_buf,
 927                                        int                 acc,
 928                                        u64                *iova_start)
 929 {
 930         struct mthca_mr *mr;
 931         u64 *page_list;
 932         u64 total_size;
 933         unsigned long mask;
 934         int shift;
 935         int npages;
 936         int err;
 937         int i, j, n;
 938
 939         mask = buffer_list[0].addr ^ *iova_start;
 940         total_size = 0;
 941         for (i = 0; i < num_phys_buf; ++i) {
 942                 if (i != 0)
 943                         mask |= buffer_list[i].addr;
 944                 if (i != num_phys_buf - 1)
 945                         mask |= buffer_list[i].addr + buffer_list[i].size;
 946
 947                 total_size += buffer_list[i].size;
 948         }
 949
 950         if (mask & ~PAGE_MASK)
 951                 return ERR_PTR(-EINVAL);
 952
 953         shift = __ffs(mask | 1 << 31);
 954
 955         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 956         buffer_list[0].addr &= ~0ull << shift;
 957
 958         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 959         if (!mr)
 960                 return ERR_PTR(-ENOMEM);
 961
 962         npages = 0;
 963         for (i = 0; i < num_phys_buf; ++i)
 964                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 965
 966         if (!npages)
 967                 return &mr->ibmr;
 968
 969         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 970         if (!page_list) {
 971                 kfree(mr);
 972                 return ERR_PTR(-ENOMEM);
 973         }
 974
 975         n = 0;
 976         for (i = 0; i < num_phys_buf; ++i)
 977                 for (j = 0;
 978                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 979                      ++j)
 980                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 981
 982         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 983                   "in PD %x; shift %d, npages %d.\n",
 984                   (unsigned long long) buffer_list[0].addr,
 985                   (unsigned long long) *iova_start,
 986                   to_mpd(pd)->pd_num,
 987                   shift, npages);
 988
 989         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 990                                   to_mpd(pd)->pd_num,
 991                                   page_list, shift, npages,
 992                                   *iova_start, total_size,
 993                                   convert_access(acc), mr);
 994
 995         if (err) {
 996                 kfree(page_list);
 997                 kfree(mr);
 998                 return ERR_PTR(err);
 999         }
1000
1001         kfree(page_list);
1002         mr->umem = NULL;
1003
1004         return &mr->ibmr;
1005 }
1006
1007 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1008                                        u64 virt, int acc, struct ib_udata *udata)
1009 {
1010         struct mthca_dev *dev = to_mdev(pd->device);
1011         struct ib_umem_chunk *chunk;
1012         struct mthca_mr *mr;
1013         struct mthca_reg_mr ucmd;
1014         u64 *pages;
1015         int shift, n, len;
1016         int i, j, k;
1017         int err = 0;
1018         int write_mtt_size;
1019
1020         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
1021                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
1022                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1023                                    current->comm);
1024                         mthca_warn(dev, "  Update libmthca to fix this.\n");
1025                 }
1026                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1027                 ucmd.mr_attrs = 0;
1028         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1029                 return ERR_PTR(-EFAULT);
1030
1031         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1032         if (!mr)
1033                 return ERR_PTR(-ENOMEM);
1034
1035         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1036                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1037
1038         if (IS_ERR(mr->umem)) {
1039                 err = PTR_ERR(mr->umem);
1040                 goto err;
1041         }
1042
1043         shift = ffs(mr->umem->page_size) - 1;
1044
1045         n = 0;
1046         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1047                 n += chunk->nents;
1048
1049         mr->mtt = mthca_alloc_mtt(dev, n);
1050         if (IS_ERR(mr->mtt)) {
1051                 err = PTR_ERR(mr->mtt);
1052                 goto err_umem;
1053         }
1054
1055         pages = (u64 *) __get_free_page(GFP_KERNEL);
1056         if (!pages) {
1057                 err = -ENOMEM;
1058                 goto err_mtt;
1059         }
1060
1061         i = n = 0;
1062
1063         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1064
1065         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1066                 for (j = 0; j < chunk->nmap; ++j) {
1067                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1068                         for (k = 0; k < len; ++k) {
1069                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1070                                         mr->umem->page_size * k;
1071                                 /*
1072                                  * Be friendly to write_mtt and pass it chunks
1073                                  * of appropriate size.
1074                                  */
1075                                 if (i == write_mtt_size) {
1076                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1077                                         if (err)
1078                                                 goto mtt_done;
1079                                         n += i;
1080                                         i = 0;
1081                                 }
1082                         }
1083                 }
1084
1085         if (i)
1086                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1087 mtt_done:
1088         free_page((unsigned long) pages);
1089         if (err)
1090                 goto err_mtt;
1091
1092         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1093                              convert_access(acc), mr);
1094
1095         if (err)
1096                 goto err_mtt;
1097
1098         return &mr->ibmr;
1099
1100 err_mtt:
1101         mthca_free_mtt(dev, mr->mtt);
1102
1103 err_umem:
1104         ib_umem_release(mr->umem);
1105
1106 err:
1107         kfree(mr);
1108         return ERR_PTR(err);
1109 }
1110
1111 static int mthca_dereg_mr(struct ib_mr *mr)
1112 {
1113         struct mthca_mr *mmr = to_mmr(mr);
1114
1115         mthca_free_mr(to_mdev(mr->device), mmr);
1116         if (mmr->umem)
1117                 ib_umem_release(mmr->umem);
1118         kfree(mmr);
1119
1120         return 0;
1121 }
1122
1123 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1124                                       struct ib_fmr_attr *fmr_attr)
1125 {
1126         struct mthca_fmr *fmr;
1127         int err;
1128
1129         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1130         if (!fmr)
1131                 return ERR_PTR(-ENOMEM);
1132
1133         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1134         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1135                              convert_access(mr_access_flags), fmr);
1136
1137         if (err) {
1138                 kfree(fmr);
1139                 return ERR_PTR(err);
1140         }
1141
1142         return &fmr->ibmr;
1143 }
1144
1145 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1146 {
1147         struct mthca_fmr *mfmr = to_mfmr(fmr);
1148         int err;
1149
1150         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1151         if (err)
1152                 return err;
1153
1154         kfree(mfmr);
1155         return 0;
1156 }
1157
1158 static int mthca_unmap_fmr(struct list_head *fmr_list)
1159 {
1160         struct ib_fmr *fmr;
1161         int err;
1162         u8 status;
1163         struct mthca_dev *mdev = NULL;
1164
1165         list_for_each_entry(fmr, fmr_list, list) {
1166                 if (mdev && to_mdev(fmr->device) != mdev)
1167                         return -EINVAL;
1168                 mdev = to_mdev(fmr->device);
1169         }
1170
1171         if (!mdev)
1172                 return 0;
1173
1174         if (mthca_is_memfree(mdev)) {
1175                 list_for_each_entry(fmr, fmr_list, list)
1176                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1177
1178                 wmb();
1179         } else
1180                 list_for_each_entry(fmr, fmr_list, list)
1181                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1182
1183         err = mthca_SYNC_TPT(mdev, &status);
1184         if (err)
1185                 return err;
1186         if (status)
1187                 return -EINVAL;
1188         return 0;
1189 }
1190
1191 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1192                         char *buf)
1193 {
1194         struct mthca_dev *dev =
1195                 container_of(device, struct mthca_dev, ib_dev.dev);
1196         return sprintf(buf, "%x\n", dev->rev_id);
1197 }
1198
1199 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1200                            char *buf)
1201 {
1202         struct mthca_dev *dev =
1203                 container_of(device, struct mthca_dev, ib_dev.dev);
1204         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1205                        (int) (dev->fw_ver >> 16) & 0xffff,
1206                        (int) dev->fw_ver & 0xffff);
1207 }
1208
1209 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1210                         char *buf)
1211 {
1212         struct mthca_dev *dev =
1213                 container_of(device, struct mthca_dev, ib_dev.dev);
1214         switch (dev->pdev->device) {
1215         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1216                 return sprintf(buf, "MT23108\n");
1217         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1218                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1219         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1220                 return sprintf(buf, "MT25208\n");
1221         case PCI_DEVICE_ID_MELLANOX_SINAI:
1222         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1223                 return sprintf(buf, "MT25204\n");
1224         default:
1225                 return sprintf(buf, "unknown\n");
1226         }
1227 }
1228
1229 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1230                           char *buf)
1231 {
1232         struct mthca_dev *dev =
1233                 container_of(device, struct mthca_dev, ib_dev.dev);
1234         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1235 }
1236
1237 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1238 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1239 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1240 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1241
1242 static struct device_attribute *mthca_dev_attributes[] = {
1243         &dev_attr_hw_rev,
1244         &dev_attr_fw_ver,
1245         &dev_attr_hca_type,
1246         &dev_attr_board_id
1247 };
1248
1249 static int mthca_init_node_data(struct mthca_dev *dev)
1250 {
1251         struct ib_smp *in_mad  = NULL;
1252         struct ib_smp *out_mad = NULL;
1253         int err = -ENOMEM;
1254         u8 status;
1255
1256         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1257         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1258         if (!in_mad || !out_mad)
1259                 goto out;
1260
1261         init_query_mad(in_mad);
1262         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1263
1264         err = mthca_MAD_IFC(dev, 1, 1,
1265                             1, NULL, NULL, in_mad, out_mad,
1266                             &status);
1267         if (err)
1268                 goto out;
1269         if (status) {
1270                 err = -EINVAL;
1271                 goto out;
1272         }
1273
1274         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1275
1276         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1277
1278         err = mthca_MAD_IFC(dev, 1, 1,
1279                             1, NULL, NULL, in_mad, out_mad,
1280                             &status);
1281         if (err)
1282                 goto out;
1283         if (status) {
1284                 err = -EINVAL;
1285                 goto out;
1286         }
1287
1288         if (mthca_is_memfree(dev))
1289                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1290         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1291
1292 out:
1293         kfree(in_mad);
1294         kfree(out_mad);
1295         return err;
1296 }
1297
1298 int mthca_register_device(struct mthca_dev *dev)
1299 {
1300         int ret;
1301         int i;
1302
1303         ret = mthca_init_node_data(dev);
1304         if (ret)
1305                 return ret;
1306
1307         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1308         dev->ib_dev.owner                = THIS_MODULE;
1309
1310         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1311         dev->ib_dev.uverbs_cmd_mask      =
1312                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1313                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1314                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1315                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1316                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1317                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1318                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1319                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1320                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1321                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1322                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1323                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1324                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1325                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1326                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1327                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1328                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1329         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1330         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1331         dev->ib_dev.num_comp_vectors     = 1;
1332         dev->ib_dev.dma_device           = &dev->pdev->dev;
1333         dev->ib_dev.query_device         = mthca_query_device;
1334         dev->ib_dev.query_port           = mthca_query_port;
1335         dev->ib_dev.modify_device        = mthca_modify_device;
1336         dev->ib_dev.modify_port          = mthca_modify_port;
1337         dev->ib_dev.query_pkey           = mthca_query_pkey;
1338         dev->ib_dev.query_gid            = mthca_query_gid;
1339         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1340         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1341         dev->ib_dev.mmap                 = mthca_mmap_uar;
1342         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1343         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1344         dev->ib_dev.create_ah            = mthca_ah_create;
1345         dev->ib_dev.query_ah             = mthca_ah_query;
1346         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1347
1348         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1349                 dev->ib_dev.create_srq           = mthca_create_srq;
1350                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1351                 dev->ib_dev.query_srq            = mthca_query_srq;
1352                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1353                 dev->ib_dev.uverbs_cmd_mask     |=
1354                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1355                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1356                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1357                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1358
1359                 if (mthca_is_memfree(dev))
1360                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1361                 else
1362                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1363         }
1364
1365         dev->ib_dev.create_qp            = mthca_create_qp;
1366         dev->ib_dev.modify_qp            = mthca_modify_qp;
1367         dev->ib_dev.query_qp             = mthca_query_qp;
1368         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1369         dev->ib_dev.create_cq            = mthca_create_cq;
1370         dev->ib_dev.resize_cq            = mthca_resize_cq;
1371         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1372         dev->ib_dev.poll_cq              = mthca_poll_cq;
1373         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1374         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1375         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1376         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1377
1378         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1379                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1380                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1381                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1382                 if (mthca_is_memfree(dev))
1383                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1384                 else
1385                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1386         }
1387
1388         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1389         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1390         dev->ib_dev.process_mad          = mthca_process_mad;
1391
1392         if (mthca_is_memfree(dev)) {
1393                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1394                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1395                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1396         } else {
1397                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1398                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1399                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1400         }
1401
1402         mutex_init(&dev->cap_mask_mutex);
1403
1404         ret = ib_register_device(&dev->ib_dev);
1405         if (ret)
1406                 return ret;
1407
1408         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1409                 ret = device_create_file(&dev->ib_dev.dev,
1410                                          mthca_dev_attributes[i]);
1411                 if (ret) {
1412                         ib_unregister_device(&dev->ib_dev);
1413                         return ret;
1414                 }
1415         }
1416
1417         mthca_start_catas_poll(dev);
1418
1419         return 0;
1420 }
1421
1422 void mthca_unregister_device(struct mthca_dev *dev)
1423 {
1424         mthca_stop_catas_poll(dev);
1425         ib_unregister_device(&dev->ib_dev);
1426 }