kernel/drivers/infiniband/hw/mthca/mthca_provider.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
   7  *
   8  * This software is available to you under a choice of one of two
   9  * licenses.  You may choose to be licensed under the terms of the GNU
  10  * General Public License (GPL) Version 2, available from the file
  11  * COPYING in the main directory of this source tree, or the
  12  * OpenIB.org BSD license below:
  13  *
  14  *     Redistribution and use in source and binary forms, with or
  15  *     without modification, are permitted provided that the following
  16  *     conditions are met:
  17  *
  18  *      - Redistributions of source code must retain the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer.
  21  *
  22  *      - Redistributions in binary form must reproduce the above
  23  *        copyright notice, this list of conditions and the following
  24  *        disclaimer in the documentation and/or other materials
  25  *        provided with the distribution.
  26  *
  27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  34  * SOFTWARE.
  35  */
  36
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_umem.h>
  39 #include <rdma/ib_user_verbs.h>
  40
  41 #include <linux/sched.h>
  42 #include <linux/slab.h>
  43 #include <linux/stat.h>
  44 #include <linux/mm.h>
  45 #include <linux/export.h>
  46
  47 #include "mthca_dev.h"
  48 #include "mthca_cmd.h"
  49 #include "mthca_user.h"
  50 #include "mthca_memfree.h"
  51
  52 static void init_query_mad(struct ib_smp *mad)
  53 {
  54         mad->base_version  = 1;
  55         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  56         mad->class_version = 1;
  57         mad->method        = IB_MGMT_METHOD_GET;
  58 }
  59
  60 static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
  61                               struct ib_udata *uhw)
  62 {
  63         struct ib_smp *in_mad  = NULL;
  64         struct ib_smp *out_mad = NULL;
  65         int err = -ENOMEM;
  66         struct mthca_dev *mdev = to_mdev(ibdev);
  67
  68         if (uhw->inlen || uhw->outlen)
  69                 return -EINVAL;
  70
  71         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  72         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  73         if (!in_mad || !out_mad)
  74                 goto out;
  75
  76         memset(props, 0, sizeof *props);
  77
  78         props->fw_ver              = mdev->fw_ver;
  79
  80         init_query_mad(in_mad);
  81         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  82
  83         err = mthca_MAD_IFC(mdev, 1, 1,
  84                             1, NULL, NULL, in_mad, out_mad);
  85         if (err)
  86                 goto out;
  87
  88         props->device_cap_flags    = mdev->device_cap_flags;
  89         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
  90                 0xffffff;
  91         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
  92         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
  93         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
  94
  95         props->max_mr_size         = ~0ull;
  96         props->page_size_cap       = mdev->limits.page_size_cap;
  97         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
  98         props->max_qp_wr           = mdev->limits.max_wqes;
  99         props->max_sge             = mdev->limits.max_sg;
 100         props->max_sge_rd          = props->max_sge;
 101         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
 102         props->max_cqe             = mdev->limits.max_cqes;
 103         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
 104         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
 105         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
 106         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
 107         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 108         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
 109         props->max_srq_wr          = mdev->limits.max_srq_wqes;
 110         props->max_srq_sge         = mdev->limits.max_srq_sge;
 111         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
 112         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
 113                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 114         props->max_pkeys           = mdev->limits.pkey_table_len;
 115         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
 116         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 117         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 118                                            props->max_mcast_grp;
 119         /*
 120          * If Sinai memory key optimization is being used, then only
 121          * the 8-bit key portion will change.  For other HCAs, the
 122          * unused index bits will also be used for FMR remapping.
 123          */
 124         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
 125                 props->max_map_per_fmr = 255;
 126         else
 127                 props->max_map_per_fmr =
 128                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 129
 130         err = 0;
 131  out:
 132         kfree(in_mad);
 133         kfree(out_mad);
 134         return err;
 135 }
 136
 137 static int mthca_query_port(struct ib_device *ibdev,
 138                             u8 port, struct ib_port_attr *props)
 139 {
 140         struct ib_smp *in_mad  = NULL;
 141         struct ib_smp *out_mad = NULL;
 142         int err = -ENOMEM;
 143
 144         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 145         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 146         if (!in_mad || !out_mad)
 147                 goto out;
 148
 149         memset(props, 0, sizeof *props);
 150
 151         init_query_mad(in_mad);
 152         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 153         in_mad->attr_mod = cpu_to_be32(port);
 154
 155         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 156                             port, NULL, NULL, in_mad, out_mad);
 157         if (err)
 158                 goto out;
 159
 160         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 161         props->lmc               = out_mad->data[34] & 0x7;
 162         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 163         props->sm_sl             = out_mad->data[36] & 0xf;
 164         props->state             = out_mad->data[32] & 0xf;
 165         props->phys_state        = out_mad->data[33] >> 4;
 166         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 167         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
 168         props->max_msg_sz        = 0x80000000;
 169         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
 170         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
 171         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 172         props->active_width      = out_mad->data[31] & 0xf;
 173         props->active_speed      = out_mad->data[35] >> 4;
 174         props->max_mtu           = out_mad->data[41] & 0xf;
 175         props->active_mtu        = out_mad->data[36] >> 4;
 176         props->subnet_timeout    = out_mad->data[51] & 0x1f;
 177         props->max_vl_num        = out_mad->data[37] >> 4;
 178         props->init_type_reply   = out_mad->data[41] >> 4;
 179
 180  out:
 181         kfree(in_mad);
 182         kfree(out_mad);
 183         return err;
 184 }
 185
 186 static int mthca_modify_device(struct ib_device *ibdev,
 187                                int mask,
 188                                struct ib_device_modify *props)
 189 {
 190         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 191                 return -EOPNOTSUPP;
 192
 193         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 194                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 195                         return -ERESTARTSYS;
 196                 memcpy(ibdev->node_desc, props->node_desc, 64);
 197                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 198         }
 199
 200         return 0;
 201 }
 202
 203 static int mthca_modify_port(struct ib_device *ibdev,
 204                              u8 port, int port_modify_mask,
 205                              struct ib_port_modify *props)
 206 {
 207         struct mthca_set_ib_param set_ib;
 208         struct ib_port_attr attr;
 209         int err;
 210
 211         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
 212                 return -ERESTARTSYS;
 213
 214         err = mthca_query_port(ibdev, port, &attr);
 215         if (err)
 216                 goto out;
 217
 218         set_ib.set_si_guid     = 0;
 219         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
 220
 221         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 222                 ~props->clr_port_cap_mask;
 223
 224         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
 225         if (err)
 226                 goto out;
 227 out:
 228         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 229         return err;
 230 }
 231
 232 static int mthca_query_pkey(struct ib_device *ibdev,
 233                             u8 port, u16 index, u16 *pkey)
 234 {
 235         struct ib_smp *in_mad  = NULL;
 236         struct ib_smp *out_mad = NULL;
 237         int err = -ENOMEM;
 238
 239         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 240         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 241         if (!in_mad || !out_mad)
 242                 goto out;
 243
 244         init_query_mad(in_mad);
 245         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 246         in_mad->attr_mod = cpu_to_be32(index / 32);
 247
 248         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 249                             port, NULL, NULL, in_mad, out_mad);
 250         if (err)
 251                 goto out;
 252
 253         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 254
 255  out:
 256         kfree(in_mad);
 257         kfree(out_mad);
 258         return err;
 259 }
 260
 261 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
 262                            int index, union ib_gid *gid)
 263 {
 264         struct ib_smp *in_mad  = NULL;
 265         struct ib_smp *out_mad = NULL;
 266         int err = -ENOMEM;
 267
 268         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 269         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 270         if (!in_mad || !out_mad)
 271                 goto out;
 272
 273         init_query_mad(in_mad);
 274         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 275         in_mad->attr_mod = cpu_to_be32(port);
 276
 277         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 278                             port, NULL, NULL, in_mad, out_mad);
 279         if (err)
 280                 goto out;
 281
 282         memcpy(gid->raw, out_mad->data + 8, 8);
 283
 284         init_query_mad(in_mad);
 285         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 286         in_mad->attr_mod = cpu_to_be32(index / 8);
 287
 288         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
 289                             port, NULL, NULL, in_mad, out_mad);
 290         if (err)
 291                 goto out;
 292
 293         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 294
 295  out:
 296         kfree(in_mad);
 297         kfree(out_mad);
 298         return err;
 299 }
 300
 301 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
 302                                                 struct ib_udata *udata)
 303 {
 304         struct mthca_alloc_ucontext_resp uresp;
 305         struct mthca_ucontext           *context;
 306         int                              err;
 307
 308         if (!(to_mdev(ibdev)->active))
 309                 return ERR_PTR(-EAGAIN);
 310
 311         memset(&uresp, 0, sizeof uresp);
 312
 313         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
 314         if (mthca_is_memfree(to_mdev(ibdev)))
 315                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
 316         else
 317                 uresp.uarc_size = 0;
 318
 319         context = kmalloc(sizeof *context, GFP_KERNEL);
 320         if (!context)
 321                 return ERR_PTR(-ENOMEM);
 322
 323         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
 324         if (err) {
 325                 kfree(context);
 326                 return ERR_PTR(err);
 327         }
 328
 329         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
 330         if (IS_ERR(context->db_tab)) {
 331                 err = PTR_ERR(context->db_tab);
 332                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 333                 kfree(context);
 334                 return ERR_PTR(err);
 335         }
 336
 337         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 338                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
 339                 mthca_uar_free(to_mdev(ibdev), &context->uar);
 340                 kfree(context);
 341                 return ERR_PTR(-EFAULT);
 342         }
 343
 344         context->reg_mr_warned = 0;
 345
 346         return &context->ibucontext;
 347 }
 348
 349 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
 350 {
 351         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
 352                                   to_mucontext(context)->db_tab);
 353         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
 354         kfree(to_mucontext(context));
 355
 356         return 0;
 357 }
 358
 359 static int mthca_mmap_uar(struct ib_ucontext *context,
 360                           struct vm_area_struct *vma)
 361 {
 362         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 363                 return -EINVAL;
 364
 365         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 366
 367         if (io_remap_pfn_range(vma, vma->vm_start,
 368                                to_mucontext(context)->uar.pfn,
 369                                PAGE_SIZE, vma->vm_page_prot))
 370                 return -EAGAIN;
 371
 372         return 0;
 373 }
 374
 375 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
 376                                     struct ib_ucontext *context,
 377                                     struct ib_udata *udata)
 378 {
 379         struct mthca_pd *pd;
 380         int err;
 381
 382         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 383         if (!pd)
 384                 return ERR_PTR(-ENOMEM);
 385
 386         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
 387         if (err) {
 388                 kfree(pd);
 389                 return ERR_PTR(err);
 390         }
 391
 392         if (context) {
 393                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
 394                         mthca_pd_free(to_mdev(ibdev), pd);
 395                         kfree(pd);
 396                         return ERR_PTR(-EFAULT);
 397                 }
 398         }
 399
 400         return &pd->ibpd;
 401 }
 402
 403 static int mthca_dealloc_pd(struct ib_pd *pd)
 404 {
 405         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
 406         kfree(pd);
 407
 408         return 0;
 409 }
 410
 411 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
 412                                      struct ib_ah_attr *ah_attr)
 413 {
 414         int err;
 415         struct mthca_ah *ah;
 416
 417         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
 418         if (!ah)
 419                 return ERR_PTR(-ENOMEM);
 420
 421         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
 422         if (err) {
 423                 kfree(ah);
 424                 return ERR_PTR(err);
 425         }
 426
 427         return &ah->ibah;
 428 }
 429
 430 static int mthca_ah_destroy(struct ib_ah *ah)
 431 {
 432         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
 433         kfree(ah);
 434
 435         return 0;
 436 }
 437
 438 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
 439                                        struct ib_srq_init_attr *init_attr,
 440                                        struct ib_udata *udata)
 441 {
 442         struct mthca_create_srq ucmd;
 443         struct mthca_ucontext *context = NULL;
 444         struct mthca_srq *srq;
 445         int err;
 446
 447         if (init_attr->srq_type != IB_SRQT_BASIC)
 448                 return ERR_PTR(-ENOSYS);
 449
 450         srq = kmalloc(sizeof *srq, GFP_KERNEL);
 451         if (!srq)
 452                 return ERR_PTR(-ENOMEM);
 453
 454         if (pd->uobject) {
 455                 context = to_mucontext(pd->uobject->context);
 456
 457                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 458                         err = -EFAULT;
 459                         goto err_free;
 460                 }
 461
 462                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 463                                         context->db_tab, ucmd.db_index,
 464                                         ucmd.db_page);
 465
 466                 if (err)
 467                         goto err_free;
 468
 469                 srq->mr.ibmr.lkey = ucmd.lkey;
 470                 srq->db_index     = ucmd.db_index;
 471         }
 472
 473         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
 474                               &init_attr->attr, srq);
 475
 476         if (err && pd->uobject)
 477                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
 478                                     context->db_tab, ucmd.db_index);
 479
 480         if (err)
 481                 goto err_free;
 482
 483         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
 484                 mthca_free_srq(to_mdev(pd->device), srq);
 485                 err = -EFAULT;
 486                 goto err_free;
 487         }
 488
 489         return &srq->ibsrq;
 490
 491 err_free:
 492         kfree(srq);
 493
 494         return ERR_PTR(err);
 495 }
 496
 497 static int mthca_destroy_srq(struct ib_srq *srq)
 498 {
 499         struct mthca_ucontext *context;
 500
 501         if (srq->uobject) {
 502                 context = to_mucontext(srq->uobject->context);
 503
 504                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
 505                                     context->db_tab, to_msrq(srq)->db_index);
 506         }
 507
 508         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
 509         kfree(srq);
 510
 511         return 0;
 512 }
 513
 514 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 515                                      struct ib_qp_init_attr *init_attr,
 516                                      struct ib_udata *udata)
 517 {
 518         struct mthca_create_qp ucmd;
 519         struct mthca_qp *qp;
 520         int err;
 521
 522         if (init_attr->create_flags)
 523                 return ERR_PTR(-EINVAL);
 524
 525         switch (init_attr->qp_type) {
 526         case IB_QPT_RC:
 527         case IB_QPT_UC:
 528         case IB_QPT_UD:
 529         {
 530                 struct mthca_ucontext *context;
 531
 532                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
 533                 if (!qp)
 534                         return ERR_PTR(-ENOMEM);
 535
 536                 if (pd->uobject) {
 537                         context = to_mucontext(pd->uobject->context);
 538
 539                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 540                                 kfree(qp);
 541                                 return ERR_PTR(-EFAULT);
 542                         }
 543
 544                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 545                                                 context->db_tab,
 546                                                 ucmd.sq_db_index, ucmd.sq_db_page);
 547                         if (err) {
 548                                 kfree(qp);
 549                                 return ERR_PTR(err);
 550                         }
 551
 552                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
 553                                                 context->db_tab,
 554                                                 ucmd.rq_db_index, ucmd.rq_db_page);
 555                         if (err) {
 556                                 mthca_unmap_user_db(to_mdev(pd->device),
 557                                                     &context->uar,
 558                                                     context->db_tab,
 559                                                     ucmd.sq_db_index);
 560                                 kfree(qp);
 561                                 return ERR_PTR(err);
 562                         }
 563
 564                         qp->mr.ibmr.lkey = ucmd.lkey;
 565                         qp->sq.db_index  = ucmd.sq_db_index;
 566                         qp->rq.db_index  = ucmd.rq_db_index;
 567                 }
 568
 569                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
 570                                      to_mcq(init_attr->send_cq),
 571                                      to_mcq(init_attr->recv_cq),
 572                                      init_attr->qp_type, init_attr->sq_sig_type,
 573                                      &init_attr->cap, qp);
 574
 575                 if (err && pd->uobject) {
 576                         context = to_mucontext(pd->uobject->context);
 577
 578                         mthca_unmap_user_db(to_mdev(pd->device),
 579                                             &context->uar,
 580                                             context->db_tab,
 581                                             ucmd.sq_db_index);
 582                         mthca_unmap_user_db(to_mdev(pd->device),
 583                                             &context->uar,
 584                                             context->db_tab,
 585                                             ucmd.rq_db_index);
 586                 }
 587
 588                 qp->ibqp.qp_num = qp->qpn;
 589                 break;
 590         }
 591         case IB_QPT_SMI:
 592         case IB_QPT_GSI:
 593         {
 594                 /* Don't allow userspace to create special QPs */
 595                 if (pd->uobject)
 596                         return ERR_PTR(-EINVAL);
 597
 598                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
 599                 if (!qp)
 600                         return ERR_PTR(-ENOMEM);
 601
 602                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
 603
 604                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
 605                                       to_mcq(init_attr->send_cq),
 606                                       to_mcq(init_attr->recv_cq),
 607                                       init_attr->sq_sig_type, &init_attr->cap,
 608                                       qp->ibqp.qp_num, init_attr->port_num,
 609                                       to_msqp(qp));
 610                 break;
 611         }
 612         default:
 613                 /* Don't support raw QPs */
 614                 return ERR_PTR(-ENOSYS);
 615         }
 616
 617         if (err) {
 618                 kfree(qp);
 619                 return ERR_PTR(err);
 620         }
 621
 622         init_attr->cap.max_send_wr     = qp->sq.max;
 623         init_attr->cap.max_recv_wr     = qp->rq.max;
 624         init_attr->cap.max_send_sge    = qp->sq.max_gs;
 625         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
 626         init_attr->cap.max_inline_data = qp->max_inline_data;
 627
 628         return &qp->ibqp;
 629 }
 630
 631 static int mthca_destroy_qp(struct ib_qp *qp)
 632 {
 633         if (qp->uobject) {
 634                 mthca_unmap_user_db(to_mdev(qp->device),
 635                                     &to_mucontext(qp->uobject->context)->uar,
 636                                     to_mucontext(qp->uobject->context)->db_tab,
 637                                     to_mqp(qp)->sq.db_index);
 638                 mthca_unmap_user_db(to_mdev(qp->device),
 639                                     &to_mucontext(qp->uobject->context)->uar,
 640                                     to_mucontext(qp->uobject->context)->db_tab,
 641                                     to_mqp(qp)->rq.db_index);
 642         }
 643         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
 644         kfree(qp);
 645         return 0;
 646 }
 647
 648 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev,
 649                                      const struct ib_cq_init_attr *attr,
 650                                      struct ib_ucontext *context,
 651                                      struct ib_udata *udata)
 652 {
 653         int entries = attr->cqe;
 654         struct mthca_create_cq ucmd;
 655         struct mthca_cq *cq;
 656         int nent;
 657         int err;
 658
 659         if (attr->flags)
 660                 return ERR_PTR(-EINVAL);
 661
 662         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
 663                 return ERR_PTR(-EINVAL);
 664
 665         if (context) {
 666                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
 667                         return ERR_PTR(-EFAULT);
 668
 669                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 670                                         to_mucontext(context)->db_tab,
 671                                         ucmd.set_db_index, ucmd.set_db_page);
 672                 if (err)
 673                         return ERR_PTR(err);
 674
 675                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 676                                         to_mucontext(context)->db_tab,
 677                                         ucmd.arm_db_index, ucmd.arm_db_page);
 678                 if (err)
 679                         goto err_unmap_set;
 680         }
 681
 682         cq = kmalloc(sizeof *cq, GFP_KERNEL);
 683         if (!cq) {
 684                 err = -ENOMEM;
 685                 goto err_unmap_arm;
 686         }
 687
 688         if (context) {
 689                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
 690                 cq->set_ci_db_index  = ucmd.set_db_index;
 691                 cq->arm_db_index     = ucmd.arm_db_index;
 692         }
 693
 694         for (nent = 1; nent <= entries; nent <<= 1)
 695                 ; /* nothing */
 696
 697         err = mthca_init_cq(to_mdev(ibdev), nent,
 698                             context ? to_mucontext(context) : NULL,
 699                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
 700                             cq);
 701         if (err)
 702                 goto err_free;
 703
 704         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
 705                 mthca_free_cq(to_mdev(ibdev), cq);
 706                 err = -EFAULT;
 707                 goto err_free;
 708         }
 709
 710         cq->resize_buf = NULL;
 711
 712         return &cq->ibcq;
 713
 714 err_free:
 715         kfree(cq);
 716
 717 err_unmap_arm:
 718         if (context)
 719                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 720                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
 721
 722 err_unmap_set:
 723         if (context)
 724                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
 725                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
 726
 727         return ERR_PTR(err);
 728 }
 729
 730 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
 731                                   int entries)
 732 {
 733         int ret;
 734
 735         spin_lock_irq(&cq->lock);
 736         if (cq->resize_buf) {
 737                 ret = -EBUSY;
 738                 goto unlock;
 739         }
 740
 741         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
 742         if (!cq->resize_buf) {
 743                 ret = -ENOMEM;
 744                 goto unlock;
 745         }
 746
 747         cq->resize_buf->state = CQ_RESIZE_ALLOC;
 748
 749         ret = 0;
 750
 751 unlock:
 752         spin_unlock_irq(&cq->lock);
 753
 754         if (ret)
 755                 return ret;
 756
 757         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
 758         if (ret) {
 759                 spin_lock_irq(&cq->lock);
 760                 kfree(cq->resize_buf);
 761                 cq->resize_buf = NULL;
 762                 spin_unlock_irq(&cq->lock);
 763                 return ret;
 764         }
 765
 766         cq->resize_buf->cqe = entries - 1;
 767
 768         spin_lock_irq(&cq->lock);
 769         cq->resize_buf->state = CQ_RESIZE_READY;
 770         spin_unlock_irq(&cq->lock);
 771
 772         return 0;
 773 }
 774
 775 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 776 {
 777         struct mthca_dev *dev = to_mdev(ibcq->device);
 778         struct mthca_cq *cq = to_mcq(ibcq);
 779         struct mthca_resize_cq ucmd;
 780         u32 lkey;
 781         int ret;
 782
 783         if (entries < 1 || entries > dev->limits.max_cqes)
 784                 return -EINVAL;
 785
 786         mutex_lock(&cq->mutex);
 787
 788         entries = roundup_pow_of_two(entries + 1);
 789         if (entries == ibcq->cqe + 1) {
 790                 ret = 0;
 791                 goto out;
 792         }
 793
 794         if (cq->is_kernel) {
 795                 ret = mthca_alloc_resize_buf(dev, cq, entries);
 796                 if (ret)
 797                         goto out;
 798                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
 799         } else {
 800                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
 801                         ret = -EFAULT;
 802                         goto out;
 803                 }
 804                 lkey = ucmd.lkey;
 805         }
 806
 807         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
 808
 809         if (ret) {
 810                 if (cq->resize_buf) {
 811                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
 812                                           cq->resize_buf->cqe);
 813                         kfree(cq->resize_buf);
 814                         spin_lock_irq(&cq->lock);
 815                         cq->resize_buf = NULL;
 816                         spin_unlock_irq(&cq->lock);
 817                 }
 818                 goto out;
 819         }
 820
 821         if (cq->is_kernel) {
 822                 struct mthca_cq_buf tbuf;
 823                 int tcqe;
 824
 825                 spin_lock_irq(&cq->lock);
 826                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
 827                         mthca_cq_resize_copy_cqes(cq);
 828                         tbuf         = cq->buf;
 829                         tcqe         = cq->ibcq.cqe;
 830                         cq->buf      = cq->resize_buf->buf;
 831                         cq->ibcq.cqe = cq->resize_buf->cqe;
 832                 } else {
 833                         tbuf = cq->resize_buf->buf;
 834                         tcqe = cq->resize_buf->cqe;
 835                 }
 836
 837                 kfree(cq->resize_buf);
 838                 cq->resize_buf = NULL;
 839                 spin_unlock_irq(&cq->lock);
 840
 841                 mthca_free_cq_buf(dev, &tbuf, tcqe);
 842         } else
 843                 ibcq->cqe = entries - 1;
 844
 845 out:
 846         mutex_unlock(&cq->mutex);
 847
 848         return ret;
 849 }
 850
 851 static int mthca_destroy_cq(struct ib_cq *cq)
 852 {
 853         if (cq->uobject) {
 854                 mthca_unmap_user_db(to_mdev(cq->device),
 855                                     &to_mucontext(cq->uobject->context)->uar,
 856                                     to_mucontext(cq->uobject->context)->db_tab,
 857                                     to_mcq(cq)->arm_db_index);
 858                 mthca_unmap_user_db(to_mdev(cq->device),
 859                                     &to_mucontext(cq->uobject->context)->uar,
 860                                     to_mucontext(cq->uobject->context)->db_tab,
 861                                     to_mcq(cq)->set_ci_db_index);
 862         }
 863         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
 864         kfree(cq);
 865
 866         return 0;
 867 }
 868
 869 static inline u32 convert_access(int acc)
 870 {
 871         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
 872                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
 873                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
 874                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
 875                MTHCA_MPT_FLAG_LOCAL_READ;
 876 }
 877
 878 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
 879 {
 880         struct mthca_mr *mr;
 881         int err;
 882
 883         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 884         if (!mr)
 885                 return ERR_PTR(-ENOMEM);
 886
 887         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
 888                                      to_mpd(pd)->pd_num,
 889                                      convert_access(acc), mr);
 890
 891         if (err) {
 892                 kfree(mr);
 893                 return ERR_PTR(err);
 894         }
 895
 896         mr->umem = NULL;
 897
 898         return &mr->ibmr;
 899 }
 900
 901 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
 902                                        struct ib_phys_buf *buffer_list,
 903                                        int                 num_phys_buf,
 904                                        int                 acc,
 905                                        u64                *iova_start)
 906 {
 907         struct mthca_mr *mr;
 908         u64 *page_list;
 909         u64 total_size;
 910         unsigned long mask;
 911         int shift;
 912         int npages;
 913         int err;
 914         int i, j, n;
 915
 916         mask = buffer_list[0].addr ^ *iova_start;
 917         total_size = 0;
 918         for (i = 0; i < num_phys_buf; ++i) {
 919                 if (i != 0)
 920                         mask |= buffer_list[i].addr;
 921                 if (i != num_phys_buf - 1)
 922                         mask |= buffer_list[i].addr + buffer_list[i].size;
 923
 924                 total_size += buffer_list[i].size;
 925         }
 926
 927         if (mask & ~PAGE_MASK)
 928                 return ERR_PTR(-EINVAL);
 929
 930         shift = __ffs(mask | 1 << 31);
 931
 932         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
 933         buffer_list[0].addr &= ~0ull << shift;
 934
 935         mr = kmalloc(sizeof *mr, GFP_KERNEL);
 936         if (!mr)
 937                 return ERR_PTR(-ENOMEM);
 938
 939         npages = 0;
 940         for (i = 0; i < num_phys_buf; ++i)
 941                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 942
 943         if (!npages)
 944                 return &mr->ibmr;
 945
 946         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
 947         if (!page_list) {
 948                 kfree(mr);
 949                 return ERR_PTR(-ENOMEM);
 950         }
 951
 952         n = 0;
 953         for (i = 0; i < num_phys_buf; ++i)
 954                 for (j = 0;
 955                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
 956                      ++j)
 957                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
 958
 959         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
 960                   "in PD %x; shift %d, npages %d.\n",
 961                   (unsigned long long) buffer_list[0].addr,
 962                   (unsigned long long) *iova_start,
 963                   to_mpd(pd)->pd_num,
 964                   shift, npages);
 965
 966         err = mthca_mr_alloc_phys(to_mdev(pd->device),
 967                                   to_mpd(pd)->pd_num,
 968                                   page_list, shift, npages,
 969                                   *iova_start, total_size,
 970                                   convert_access(acc), mr);
 971
 972         if (err) {
 973                 kfree(page_list);
 974                 kfree(mr);
 975                 return ERR_PTR(err);
 976         }
 977
 978         kfree(page_list);
 979         mr->umem = NULL;
 980
 981         return &mr->ibmr;
 982 }
 983
 984 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 985                                        u64 virt, int acc, struct ib_udata *udata)
 986 {
 987         struct mthca_dev *dev = to_mdev(pd->device);
 988         struct scatterlist *sg;
 989         struct mthca_mr *mr;
 990         struct mthca_reg_mr ucmd;
 991         u64 *pages;
 992         int shift, n, len;
 993         int i, k, entry;
 994         int err = 0;
 995         int write_mtt_size;
 996
 997         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
 998                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
 999                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1000                                    current->comm);
1001                         mthca_warn(dev, "  Update libmthca to fix this.\n");
1002                 }
1003                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1004                 ucmd.mr_attrs = 0;
1005         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1006                 return ERR_PTR(-EFAULT);
1007
1008         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1009         if (!mr)
1010                 return ERR_PTR(-ENOMEM);
1011
1012         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1013                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1014
1015         if (IS_ERR(mr->umem)) {
1016                 err = PTR_ERR(mr->umem);
1017                 goto err;
1018         }
1019
1020         shift = ffs(mr->umem->page_size) - 1;
1021         n = mr->umem->nmap;
1022
1023         mr->mtt = mthca_alloc_mtt(dev, n);
1024         if (IS_ERR(mr->mtt)) {
1025                 err = PTR_ERR(mr->mtt);
1026                 goto err_umem;
1027         }
1028
1029         pages = (u64 *) __get_free_page(GFP_KERNEL);
1030         if (!pages) {
1031                 err = -ENOMEM;
1032                 goto err_mtt;
1033         }
1034
1035         i = n = 0;
1036
1037         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1038
1039         for_each_sg(mr->umem->sg_head.sgl, sg, mr->umem->nmap, entry) {
1040                 len = sg_dma_len(sg) >> shift;
1041                 for (k = 0; k < len; ++k) {
1042                         pages[i++] = sg_dma_address(sg) +
1043                                 mr->umem->page_size * k;
1044                         /*
1045                          * Be friendly to write_mtt and pass it chunks
1046                          * of appropriate size.
1047                          */
1048                         if (i == write_mtt_size) {
1049                                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1050                                 if (err)
1051                                         goto mtt_done;
1052                                 n += i;
1053                                 i = 0;
1054                         }
1055                 }
1056         }
1057
1058         if (i)
1059                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1060 mtt_done:
1061         free_page((unsigned long) pages);
1062         if (err)
1063                 goto err_mtt;
1064
1065         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1066                              convert_access(acc), mr);
1067
1068         if (err)
1069                 goto err_mtt;
1070
1071         return &mr->ibmr;
1072
1073 err_mtt:
1074         mthca_free_mtt(dev, mr->mtt);
1075
1076 err_umem:
1077         ib_umem_release(mr->umem);
1078
1079 err:
1080         kfree(mr);
1081         return ERR_PTR(err);
1082 }
1083
1084 static int mthca_dereg_mr(struct ib_mr *mr)
1085 {
1086         struct mthca_mr *mmr = to_mmr(mr);
1087
1088         mthca_free_mr(to_mdev(mr->device), mmr);
1089         if (mmr->umem)
1090                 ib_umem_release(mmr->umem);
1091         kfree(mmr);
1092
1093         return 0;
1094 }
1095
1096 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1097                                       struct ib_fmr_attr *fmr_attr)
1098 {
1099         struct mthca_fmr *fmr;
1100         int err;
1101
1102         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1103         if (!fmr)
1104                 return ERR_PTR(-ENOMEM);
1105
1106         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1107         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1108                              convert_access(mr_access_flags), fmr);
1109
1110         if (err) {
1111                 kfree(fmr);
1112                 return ERR_PTR(err);
1113         }
1114
1115         return &fmr->ibmr;
1116 }
1117
1118 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1119 {
1120         struct mthca_fmr *mfmr = to_mfmr(fmr);
1121         int err;
1122
1123         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1124         if (err)
1125                 return err;
1126
1127         kfree(mfmr);
1128         return 0;
1129 }
1130
1131 static int mthca_unmap_fmr(struct list_head *fmr_list)
1132 {
1133         struct ib_fmr *fmr;
1134         int err;
1135         struct mthca_dev *mdev = NULL;
1136
1137         list_for_each_entry(fmr, fmr_list, list) {
1138                 if (mdev && to_mdev(fmr->device) != mdev)
1139                         return -EINVAL;
1140                 mdev = to_mdev(fmr->device);
1141         }
1142
1143         if (!mdev)
1144                 return 0;
1145
1146         if (mthca_is_memfree(mdev)) {
1147                 list_for_each_entry(fmr, fmr_list, list)
1148                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1149
1150                 wmb();
1151         } else
1152                 list_for_each_entry(fmr, fmr_list, list)
1153                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1154
1155         err = mthca_SYNC_TPT(mdev);
1156         return err;
1157 }
1158
1159 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1160                         char *buf)
1161 {
1162         struct mthca_dev *dev =
1163                 container_of(device, struct mthca_dev, ib_dev.dev);
1164         return sprintf(buf, "%x\n", dev->rev_id);
1165 }
1166
1167 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1168                            char *buf)
1169 {
1170         struct mthca_dev *dev =
1171                 container_of(device, struct mthca_dev, ib_dev.dev);
1172         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1173                        (int) (dev->fw_ver >> 16) & 0xffff,
1174                        (int) dev->fw_ver & 0xffff);
1175 }
1176
1177 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1178                         char *buf)
1179 {
1180         struct mthca_dev *dev =
1181                 container_of(device, struct mthca_dev, ib_dev.dev);
1182         switch (dev->pdev->device) {
1183         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1184                 return sprintf(buf, "MT23108\n");
1185         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1186                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1187         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1188                 return sprintf(buf, "MT25208\n");
1189         case PCI_DEVICE_ID_MELLANOX_SINAI:
1190         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1191                 return sprintf(buf, "MT25204\n");
1192         default:
1193                 return sprintf(buf, "unknown\n");
1194         }
1195 }
1196
1197 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1198                           char *buf)
1199 {
1200         struct mthca_dev *dev =
1201                 container_of(device, struct mthca_dev, ib_dev.dev);
1202         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1203 }
1204
1205 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1206 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1207 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1208 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1209
1210 static struct device_attribute *mthca_dev_attributes[] = {
1211         &dev_attr_hw_rev,
1212         &dev_attr_fw_ver,
1213         &dev_attr_hca_type,
1214         &dev_attr_board_id
1215 };
1216
1217 static int mthca_init_node_data(struct mthca_dev *dev)
1218 {
1219         struct ib_smp *in_mad  = NULL;
1220         struct ib_smp *out_mad = NULL;
1221         int err = -ENOMEM;
1222
1223         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1224         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1225         if (!in_mad || !out_mad)
1226                 goto out;
1227
1228         init_query_mad(in_mad);
1229         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1230
1231         err = mthca_MAD_IFC(dev, 1, 1,
1232                             1, NULL, NULL, in_mad, out_mad);
1233         if (err)
1234                 goto out;
1235
1236         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1237
1238         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1239
1240         err = mthca_MAD_IFC(dev, 1, 1,
1241                             1, NULL, NULL, in_mad, out_mad);
1242         if (err)
1243                 goto out;
1244
1245         if (mthca_is_memfree(dev))
1246                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1247         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1248
1249 out:
1250         kfree(in_mad);
1251         kfree(out_mad);
1252         return err;
1253 }
1254
1255 static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1256                                 struct ib_port_immutable *immutable)
1257 {
1258         struct ib_port_attr attr;
1259         int err;
1260
1261         err = mthca_query_port(ibdev, port_num, &attr);
1262         if (err)
1263                 return err;
1264
1265         immutable->pkey_tbl_len = attr.pkey_tbl_len;
1266         immutable->gid_tbl_len = attr.gid_tbl_len;
1267         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1268         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1269
1270         return 0;
1271 }
1272
1273 int mthca_register_device(struct mthca_dev *dev)
1274 {
1275         int ret;
1276         int i;
1277
1278         ret = mthca_init_node_data(dev);
1279         if (ret)
1280                 return ret;
1281
1282         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1283         dev->ib_dev.owner                = THIS_MODULE;
1284
1285         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1286         dev->ib_dev.uverbs_cmd_mask      =
1287                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1288                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1289                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1290                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1291                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1292                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1293                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1294                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1295                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1296                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1297                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1298                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1299                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1300                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1301                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1302                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1303                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1304         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1305         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1306         dev->ib_dev.num_comp_vectors     = 1;
1307         dev->ib_dev.dma_device           = &dev->pdev->dev;
1308         dev->ib_dev.query_device         = mthca_query_device;
1309         dev->ib_dev.query_port           = mthca_query_port;
1310         dev->ib_dev.modify_device        = mthca_modify_device;
1311         dev->ib_dev.modify_port          = mthca_modify_port;
1312         dev->ib_dev.query_pkey           = mthca_query_pkey;
1313         dev->ib_dev.query_gid            = mthca_query_gid;
1314         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1315         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1316         dev->ib_dev.mmap                 = mthca_mmap_uar;
1317         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1318         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1319         dev->ib_dev.create_ah            = mthca_ah_create;
1320         dev->ib_dev.query_ah             = mthca_ah_query;
1321         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1322
1323         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1324                 dev->ib_dev.create_srq           = mthca_create_srq;
1325                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1326                 dev->ib_dev.query_srq            = mthca_query_srq;
1327                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1328                 dev->ib_dev.uverbs_cmd_mask     |=
1329                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1330                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1331                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1332                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1333
1334                 if (mthca_is_memfree(dev))
1335                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1336                 else
1337                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1338         }
1339
1340         dev->ib_dev.create_qp            = mthca_create_qp;
1341         dev->ib_dev.modify_qp            = mthca_modify_qp;
1342         dev->ib_dev.query_qp             = mthca_query_qp;
1343         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1344         dev->ib_dev.create_cq            = mthca_create_cq;
1345         dev->ib_dev.resize_cq            = mthca_resize_cq;
1346         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1347         dev->ib_dev.poll_cq              = mthca_poll_cq;
1348         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1349         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1350         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1351         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1352         dev->ib_dev.get_port_immutable   = mthca_port_immutable;
1353
1354         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1355                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1356                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1357                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1358                 if (mthca_is_memfree(dev))
1359                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1360                 else
1361                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1362         }
1363
1364         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1365         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1366         dev->ib_dev.process_mad          = mthca_process_mad;
1367
1368         if (mthca_is_memfree(dev)) {
1369                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1370                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1371                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1372         } else {
1373                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1374                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1375                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1376         }
1377
1378         mutex_init(&dev->cap_mask_mutex);
1379
1380         ret = ib_register_device(&dev->ib_dev, NULL);
1381         if (ret)
1382                 return ret;
1383
1384         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1385                 ret = device_create_file(&dev->ib_dev.dev,
1386                                          mthca_dev_attributes[i]);
1387                 if (ret) {
1388                         ib_unregister_device(&dev->ib_dev);
1389                         return ret;
1390                 }
1391         }
1392
1393         mthca_start_catas_poll(dev);
1394
1395         return 0;
1396 }
1397
1398 void mthca_unregister_device(struct mthca_dev *dev)
1399 {
1400         mthca_stop_catas_poll(dev);
1401         ib_unregister_device(&dev->ib_dev);
1402 }