drivers/net/mlx4/main.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 Mellanox Technologies. All rights reserved.
   5  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * OpenIB.org BSD license below:
  12  *
  13  *     Redistribution and use in source and binary forms, with or
  14  *     without modification, are permitted provided that the following
  15  *     conditions are met:
  16  *
  17  *      - Redistributions of source code must retain the above
  18  *        copyright notice, this list of conditions and the following
  19  *        disclaimer.
  20  *
  21  *      - Redistributions in binary form must reproduce the above
  22  *        copyright notice, this list of conditions and the following
  23  *        disclaimer in the documentation and/or other materials
  24  *        provided with the distribution.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  33  * SOFTWARE.
  34  */
  35
  36 #include <linux/module.h>
  37 #include <linux/init.h>
  38 #include <linux/errno.h>
  39 #include <linux/pci.h>
  40 #include <linux/dma-mapping.h>
  41
  42 #include <linux/mlx4/device.h>
  43 #include <linux/mlx4/doorbell.h>
  44
  45 #include "mlx4.h"
  46 #include "fw.h"
  47 #include "icm.h"
  48
  49 MODULE_AUTHOR("Roland Dreier");
  50 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
  51 MODULE_LICENSE("Dual BSD/GPL");
  52 MODULE_VERSION(DRV_VERSION);
  53
  54 #ifdef CONFIG_MLX4_DEBUG
  55
  56 int mlx4_debug_level = 0;
  57 module_param_named(debug_level, mlx4_debug_level, int, 0644);
  58 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
  59
  60 #endif /* CONFIG_MLX4_DEBUG */
  61
  62 #ifdef CONFIG_PCI_MSI
  63
  64 static int msi_x = 1;
  65 module_param(msi_x, int, 0444);
  66 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
  67
  68 #else /* CONFIG_PCI_MSI */
  69
  70 #define msi_x (0)
  71
  72 #endif /* CONFIG_PCI_MSI */
  73
  74 static const char mlx4_version[] __devinitdata =
  75         DRV_NAME ": Mellanox ConnectX core driver v"
  76         DRV_VERSION " (" DRV_RELDATE ")\n";
  77
  78 static struct mlx4_profile default_profile = {
  79         .num_qp         = 1 << 16,
  80         .num_srq        = 1 << 16,
  81         .rdmarc_per_qp  = 1 << 4,
  82         .num_cq         = 1 << 16,
  83         .num_mcg        = 1 << 13,
  84         .num_mpt        = 1 << 17,
  85         .num_mtt        = 1 << 20,
  86 };
  87
  88 static int __devinit mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
  89 {
  90         int err;
  91         int i;
  92
  93         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
  94         if (err) {
  95                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
  96                 return err;
  97         }
  98
  99         if (dev_cap->min_page_sz > PAGE_SIZE) {
 100                 mlx4_err(dev, "HCA minimum page size of %d bigger than "
 101                          "kernel PAGE_SIZE of %ld, aborting.\n",
 102                          dev_cap->min_page_sz, PAGE_SIZE);
 103                 return -ENODEV;
 104         }
 105         if (dev_cap->num_ports > MLX4_MAX_PORTS) {
 106                 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
 107                          "aborting.\n",
 108                          dev_cap->num_ports, MLX4_MAX_PORTS);
 109                 return -ENODEV;
 110         }
 111
 112         if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
 113                 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
 114                          "PCI resource 2 size of 0x%llx, aborting.\n",
 115                          dev_cap->uar_size,
 116                          (unsigned long long) pci_resource_len(dev->pdev, 2));
 117                 return -ENODEV;
 118         }
 119
 120         dev->caps.num_ports          = dev_cap->num_ports;
 121         for (i = 1; i <= dev->caps.num_ports; ++i) {
 122                 dev->caps.vl_cap[i]         = dev_cap->max_vl[i];
 123                 dev->caps.mtu_cap[i]        = dev_cap->max_mtu[i];
 124                 dev->caps.gid_table_len[i]  = dev_cap->max_gids[i];
 125                 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
 126                 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
 127         }
 128
 129         dev->caps.num_uars           = dev_cap->uar_size / PAGE_SIZE;
 130         dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
 131         dev->caps.bf_reg_size        = dev_cap->bf_reg_size;
 132         dev->caps.bf_regs_per_page   = dev_cap->bf_regs_per_page;
 133         dev->caps.max_sq_sg          = dev_cap->max_sq_sg;
 134         dev->caps.max_rq_sg          = dev_cap->max_rq_sg;
 135         dev->caps.max_wqes           = dev_cap->max_qp_sz;
 136         dev->caps.max_qp_init_rdma   = dev_cap->max_requester_per_qp;
 137         dev->caps.reserved_qps       = dev_cap->reserved_qps;
 138         dev->caps.max_srq_wqes       = dev_cap->max_srq_sz;
 139         dev->caps.max_srq_sge        = dev_cap->max_rq_sg - 1;
 140         dev->caps.reserved_srqs      = dev_cap->reserved_srqs;
 141         dev->caps.max_sq_desc_sz     = dev_cap->max_sq_desc_sz;
 142         dev->caps.max_rq_desc_sz     = dev_cap->max_rq_desc_sz;
 143         dev->caps.num_qp_per_mgm     = MLX4_QP_PER_MGM;
 144         /*
 145          * Subtract 1 from the limit because we need to allocate a
 146          * spare CQE so the HCA HW can tell the difference between an
 147          * empty CQ and a full CQ.
 148          */
 149         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
 150         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
 151         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
 152         dev->caps.reserved_mtts      = dev_cap->reserved_mtts;
 153         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
 154         dev->caps.reserved_uars      = dev_cap->reserved_uars;
 155         dev->caps.reserved_pds       = dev_cap->reserved_pds;
 156         dev->caps.mtt_entry_sz       = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
 157         dev->caps.max_msg_sz         = dev_cap->max_msg_sz;
 158         dev->caps.page_size_cap      = ~(u32) (dev_cap->min_page_sz - 1);
 159         dev->caps.flags              = dev_cap->flags;
 160         dev->caps.stat_rate_support  = dev_cap->stat_rate_support;
 161
 162         return 0;
 163 }
 164
 165 static int __devinit mlx4_load_fw(struct mlx4_dev *dev)
 166 {
 167         struct mlx4_priv *priv = mlx4_priv(dev);
 168         int err;
 169
 170         priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
 171                                          GFP_HIGHUSER | __GFP_NOWARN);
 172         if (!priv->fw.fw_icm) {
 173                 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
 174                 return -ENOMEM;
 175         }
 176
 177         err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
 178         if (err) {
 179                 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
 180                 goto err_free;
 181         }
 182
 183         err = mlx4_RUN_FW(dev);
 184         if (err) {
 185                 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
 186                 goto err_unmap_fa;
 187         }
 188
 189         return 0;
 190
 191 err_unmap_fa:
 192         mlx4_UNMAP_FA(dev);
 193
 194 err_free:
 195         mlx4_free_icm(dev, priv->fw.fw_icm);
 196         return err;
 197 }
 198
 199 static int __devinit mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
 200                                           int cmpt_entry_sz)
 201 {
 202         struct mlx4_priv *priv = mlx4_priv(dev);
 203         int err;
 204
 205         err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
 206                                   cmpt_base +
 207                                   ((u64) (MLX4_CMPT_TYPE_QP *
 208                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 209                                   cmpt_entry_sz, dev->caps.num_qps,
 210                                   dev->caps.reserved_qps, 0);
 211         if (err)
 212                 goto err;
 213
 214         err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
 215                                   cmpt_base +
 216                                   ((u64) (MLX4_CMPT_TYPE_SRQ *
 217                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 218                                   cmpt_entry_sz, dev->caps.num_srqs,
 219                                   dev->caps.reserved_srqs, 0);
 220         if (err)
 221                 goto err_qp;
 222
 223         err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
 224                                   cmpt_base +
 225                                   ((u64) (MLX4_CMPT_TYPE_CQ *
 226                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 227                                   cmpt_entry_sz, dev->caps.num_cqs,
 228                                   dev->caps.reserved_cqs, 0);
 229         if (err)
 230                 goto err_srq;
 231
 232         err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
 233                                   cmpt_base +
 234                                   ((u64) (MLX4_CMPT_TYPE_EQ *
 235                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 236                                   cmpt_entry_sz,
 237                                   roundup_pow_of_two(MLX4_NUM_EQ +
 238                                                      dev->caps.reserved_eqs),
 239                                   MLX4_NUM_EQ + dev->caps.reserved_eqs, 0);
 240         if (err)
 241                 goto err_cq;
 242
 243         return 0;
 244
 245 err_cq:
 246         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 247
 248 err_srq:
 249         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 250
 251 err_qp:
 252         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 253
 254 err:
 255         return err;
 256 }
 257
 258 static int __devinit mlx4_init_icm(struct mlx4_dev *dev,
 259                                    struct mlx4_dev_cap *dev_cap,
 260                                    struct mlx4_init_hca_param *init_hca,
 261                                    u64 icm_size)
 262 {
 263         struct mlx4_priv *priv = mlx4_priv(dev);
 264         u64 aux_pages;
 265         int err;
 266
 267         err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
 268         if (err) {
 269                 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
 270                 return err;
 271         }
 272
 273         mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
 274                  (unsigned long long) icm_size >> 10,
 275                  (unsigned long long) aux_pages << 2);
 276
 277         priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
 278                                           GFP_HIGHUSER | __GFP_NOWARN);
 279         if (!priv->fw.aux_icm) {
 280                 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
 281                 return -ENOMEM;
 282         }
 283
 284         err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
 285         if (err) {
 286                 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
 287                 goto err_free_aux;
 288         }
 289
 290         err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
 291         if (err) {
 292                 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
 293                 goto err_unmap_aux;
 294         }
 295
 296         err = mlx4_map_eq_icm(dev, init_hca->eqc_base);
 297         if (err) {
 298                 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
 299                 goto err_unmap_cmpt;
 300         }
 301
 302         err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
 303                                   init_hca->mtt_base,
 304                                   dev->caps.mtt_entry_sz,
 305                                   dev->caps.num_mtt_segs,
 306                                   dev->caps.reserved_mtts, 1);
 307         if (err) {
 308                 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
 309                 goto err_unmap_eq;
 310         }
 311
 312         err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
 313                                   init_hca->dmpt_base,
 314                                   dev_cap->dmpt_entry_sz,
 315                                   dev->caps.num_mpts,
 316                                   dev->caps.reserved_mrws, 1);
 317         if (err) {
 318                 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
 319                 goto err_unmap_mtt;
 320         }
 321
 322         err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
 323                                   init_hca->qpc_base,
 324                                   dev_cap->qpc_entry_sz,
 325                                   dev->caps.num_qps,
 326                                   dev->caps.reserved_qps, 0);
 327         if (err) {
 328                 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
 329                 goto err_unmap_dmpt;
 330         }
 331
 332         err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
 333                                   init_hca->auxc_base,
 334                                   dev_cap->aux_entry_sz,
 335                                   dev->caps.num_qps,
 336                                   dev->caps.reserved_qps, 0);
 337         if (err) {
 338                 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
 339                 goto err_unmap_qp;
 340         }
 341
 342         err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
 343                                   init_hca->altc_base,
 344                                   dev_cap->altc_entry_sz,
 345                                   dev->caps.num_qps,
 346                                   dev->caps.reserved_qps, 0);
 347         if (err) {
 348                 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
 349                 goto err_unmap_auxc;
 350         }
 351
 352         err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
 353                                   init_hca->rdmarc_base,
 354                                   dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
 355                                   dev->caps.num_qps,
 356                                   dev->caps.reserved_qps, 0);
 357         if (err) {
 358                 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
 359                 goto err_unmap_altc;
 360         }
 361
 362         err = mlx4_init_icm_table(dev, &priv->cq_table.table,
 363                                   init_hca->cqc_base,
 364                                   dev_cap->cqc_entry_sz,
 365                                   dev->caps.num_cqs,
 366                                   dev->caps.reserved_cqs, 0);
 367         if (err) {
 368                 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
 369                 goto err_unmap_rdmarc;
 370         }
 371
 372         err = mlx4_init_icm_table(dev, &priv->srq_table.table,
 373                                   init_hca->srqc_base,
 374                                   dev_cap->srq_entry_sz,
 375                                   dev->caps.num_srqs,
 376                                   dev->caps.reserved_srqs, 0);
 377         if (err) {
 378                 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
 379                 goto err_unmap_cq;
 380         }
 381
 382         /*
 383          * It's not strictly required, but for simplicity just map the
 384          * whole multicast group table now.  The table isn't very big
 385          * and it's a lot easier than trying to track ref counts.
 386          */
 387         err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
 388                                   init_hca->mc_base, MLX4_MGM_ENTRY_SIZE,
 389                                   dev->caps.num_mgms + dev->caps.num_amgms,
 390                                   dev->caps.num_mgms + dev->caps.num_amgms,
 391                                   0);
 392         if (err) {
 393                 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
 394                 goto err_unmap_srq;
 395         }
 396
 397         return 0;
 398
 399 err_unmap_srq:
 400         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
 401
 402 err_unmap_cq:
 403         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
 404
 405 err_unmap_rdmarc:
 406         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
 407
 408 err_unmap_altc:
 409         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
 410
 411 err_unmap_auxc:
 412         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
 413
 414 err_unmap_qp:
 415         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
 416
 417 err_unmap_dmpt:
 418         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
 419
 420 err_unmap_mtt:
 421         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
 422
 423 err_unmap_eq:
 424         mlx4_unmap_eq_icm(dev);
 425
 426 err_unmap_cmpt:
 427         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
 428         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 429         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 430         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 431
 432 err_unmap_aux:
 433         mlx4_UNMAP_ICM_AUX(dev);
 434
 435 err_free_aux:
 436         mlx4_free_icm(dev, priv->fw.aux_icm);
 437
 438         return err;
 439 }
 440
 441 static void mlx4_free_icms(struct mlx4_dev *dev)
 442 {
 443         struct mlx4_priv *priv = mlx4_priv(dev);
 444
 445         mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
 446         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
 447         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
 448         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
 449         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
 450         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
 451         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
 452         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
 453         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
 454         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
 455         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 456         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 457         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 458         mlx4_unmap_eq_icm(dev);
 459
 460         mlx4_UNMAP_ICM_AUX(dev);
 461         mlx4_free_icm(dev, priv->fw.aux_icm);
 462 }
 463
 464 static void mlx4_close_hca(struct mlx4_dev *dev)
 465 {
 466         mlx4_CLOSE_HCA(dev, 0);
 467         mlx4_free_icms(dev);
 468         mlx4_UNMAP_FA(dev);
 469         mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm);
 470 }
 471
 472 static int __devinit mlx4_init_hca(struct mlx4_dev *dev)
 473 {
 474         struct mlx4_priv          *priv = mlx4_priv(dev);
 475         struct mlx4_adapter        adapter;
 476         struct mlx4_dev_cap        dev_cap;
 477         struct mlx4_profile        profile;
 478         struct mlx4_init_hca_param init_hca;
 479         u64 icm_size;
 480         int err;
 481
 482         err = mlx4_QUERY_FW(dev);
 483         if (err) {
 484                 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
 485                 return err;
 486         }
 487
 488         err = mlx4_load_fw(dev);
 489         if (err) {
 490                 mlx4_err(dev, "Failed to start FW, aborting.\n");
 491                 return err;
 492         }
 493
 494         err = mlx4_dev_cap(dev, &dev_cap);
 495         if (err) {
 496                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
 497                 goto err_stop_fw;
 498         }
 499
 500         profile = default_profile;
 501
 502         icm_size = mlx4_make_profile(dev, &profile, &dev_cap, &init_hca);
 503         if ((long long) icm_size < 0) {
 504                 err = icm_size;
 505                 goto err_stop_fw;
 506         }
 507
 508         init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
 509
 510         err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
 511         if (err)
 512                 goto err_stop_fw;
 513
 514         err = mlx4_INIT_HCA(dev, &init_hca);
 515         if (err) {
 516                 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
 517                 goto err_free_icm;
 518         }
 519
 520         err = mlx4_QUERY_ADAPTER(dev, &adapter);
 521         if (err) {
 522                 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
 523                 goto err_close;
 524         }
 525
 526         priv->eq_table.inta_pin = adapter.inta_pin;
 527         priv->rev_id            = adapter.revision_id;
 528         memcpy(priv->board_id, adapter.board_id, sizeof priv->board_id);
 529
 530         return 0;
 531
 532 err_close:
 533         mlx4_close_hca(dev);
 534
 535 err_free_icm:
 536         mlx4_free_icms(dev);
 537
 538 err_stop_fw:
 539         mlx4_UNMAP_FA(dev);
 540         mlx4_free_icm(dev, priv->fw.fw_icm);
 541
 542         return err;
 543 }
 544
 545 static int __devinit mlx4_setup_hca(struct mlx4_dev *dev)
 546 {
 547         struct mlx4_priv *priv = mlx4_priv(dev);
 548         int err;
 549
 550         err = mlx4_init_uar_table(dev);
 551         if (err) {
 552                 mlx4_err(dev, "Failed to initialize "
 553                          "user access region table, aborting.\n");
 554                 return err;
 555         }
 556
 557         err = mlx4_uar_alloc(dev, &priv->driver_uar);
 558         if (err) {
 559                 mlx4_err(dev, "Failed to allocate driver access region, "
 560                          "aborting.\n");
 561                 goto err_uar_table_free;
 562         }
 563
 564         priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 565         if (!priv->kar) {
 566                 mlx4_err(dev, "Couldn't map kernel access region, "
 567                          "aborting.\n");
 568                 err = -ENOMEM;
 569                 goto err_uar_free;
 570         }
 571
 572         err = mlx4_init_pd_table(dev);
 573         if (err) {
 574                 mlx4_err(dev, "Failed to initialize "
 575                          "protection domain table, aborting.\n");
 576                 goto err_kar_unmap;
 577         }
 578
 579         err = mlx4_init_mr_table(dev);
 580         if (err) {
 581                 mlx4_err(dev, "Failed to initialize "
 582                          "memory region table, aborting.\n");
 583                 goto err_pd_table_free;
 584         }
 585
 586         err = mlx4_init_eq_table(dev);
 587         if (err) {
 588                 mlx4_err(dev, "Failed to initialize "
 589                          "event queue table, aborting.\n");
 590                 goto err_mr_table_free;
 591         }
 592
 593         err = mlx4_cmd_use_events(dev);
 594         if (err) {
 595                 mlx4_err(dev, "Failed to switch to event-driven "
 596                          "firmware commands, aborting.\n");
 597                 goto err_eq_table_free;
 598         }
 599
 600         err = mlx4_NOP(dev);
 601         if (err) {
 602                 if (dev->flags & MLX4_FLAG_MSI_X) {
 603                         mlx4_warn(dev, "NOP command failed to generate MSI-X "
 604                                   "interrupt IRQ %d).\n",
 605                                   priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
 606                         mlx4_warn(dev, "Trying again without MSI-X.\n");
 607                 } else {
 608                         mlx4_err(dev, "NOP command failed to generate interrupt "
 609                                  "(IRQ %d), aborting.\n",
 610                                  priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
 611                         mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
 612                 }
 613
 614                 goto err_cmd_poll;
 615         }
 616
 617         mlx4_dbg(dev, "NOP command IRQ test passed\n");
 618
 619         err = mlx4_init_cq_table(dev);
 620         if (err) {
 621                 mlx4_err(dev, "Failed to initialize "
 622                          "completion queue table, aborting.\n");
 623                 goto err_cmd_poll;
 624         }
 625
 626         err = mlx4_init_srq_table(dev);
 627         if (err) {
 628                 mlx4_err(dev, "Failed to initialize "
 629                          "shared receive queue table, aborting.\n");
 630                 goto err_cq_table_free;
 631         }
 632
 633         err = mlx4_init_qp_table(dev);
 634         if (err) {
 635                 mlx4_err(dev, "Failed to initialize "
 636                          "queue pair table, aborting.\n");
 637                 goto err_srq_table_free;
 638         }
 639
 640         err = mlx4_init_mcg_table(dev);
 641         if (err) {
 642                 mlx4_err(dev, "Failed to initialize "
 643                          "multicast group table, aborting.\n");
 644                 goto err_qp_table_free;
 645         }
 646
 647         return 0;
 648
 649 err_qp_table_free:
 650         mlx4_cleanup_qp_table(dev);
 651
 652 err_srq_table_free:
 653         mlx4_cleanup_srq_table(dev);
 654
 655 err_cq_table_free:
 656         mlx4_cleanup_cq_table(dev);
 657
 658 err_cmd_poll:
 659         mlx4_cmd_use_polling(dev);
 660
 661 err_eq_table_free:
 662         mlx4_cleanup_eq_table(dev);
 663
 664 err_mr_table_free:
 665         mlx4_cleanup_mr_table(dev);
 666
 667 err_pd_table_free:
 668         mlx4_cleanup_pd_table(dev);
 669
 670 err_kar_unmap:
 671         iounmap(priv->kar);
 672
 673 err_uar_free:
 674         mlx4_uar_free(dev, &priv->driver_uar);
 675
 676 err_uar_table_free:
 677         mlx4_cleanup_uar_table(dev);
 678         return err;
 679 }
 680
 681 static void __devinit mlx4_enable_msi_x(struct mlx4_dev *dev)
 682 {
 683         struct mlx4_priv *priv = mlx4_priv(dev);
 684         struct msix_entry entries[MLX4_NUM_EQ];
 685         int err;
 686         int i;
 687
 688         if (msi_x) {
 689                 for (i = 0; i < MLX4_NUM_EQ; ++i)
 690                         entries[i].entry = i;
 691
 692                 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
 693                 if (err) {
 694                         if (err > 0)
 695                                 mlx4_info(dev, "Only %d MSI-X vectors available, "
 696                                           "not using MSI-X\n", err);
 697                         goto no_msi;
 698                 }
 699
 700                 for (i = 0; i < MLX4_NUM_EQ; ++i)
 701                         priv->eq_table.eq[i].irq = entries[i].vector;
 702
 703                 dev->flags |= MLX4_FLAG_MSI_X;
 704                 return;
 705         }
 706
 707 no_msi:
 708         for (i = 0; i < MLX4_NUM_EQ; ++i)
 709                 priv->eq_table.eq[i].irq = dev->pdev->irq;
 710 }
 711
 712 static int __devinit mlx4_init_one(struct pci_dev *pdev,
 713                                    const struct pci_device_id *id)
 714 {
 715         static int mlx4_version_printed;
 716         struct mlx4_priv *priv;
 717         struct mlx4_dev *dev;
 718         int err;
 719
 720         if (!mlx4_version_printed) {
 721                 printk(KERN_INFO "%s", mlx4_version);
 722                 ++mlx4_version_printed;
 723         }
 724
 725         printk(KERN_INFO PFX "Initializing %s\n",
 726                pci_name(pdev));
 727
 728         err = pci_enable_device(pdev);
 729         if (err) {
 730                 dev_err(&pdev->dev, "Cannot enable PCI device, "
 731                         "aborting.\n");
 732                 return err;
 733         }
 734
 735         /*
 736          * Check for BARs.  We expect 0: 1MB, 2: 8MB, 4: DDR (may not
 737          * be present)
 738          */
 739         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
 740             pci_resource_len(pdev, 0) != 1 << 20) {
 741                 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
 742                 err = -ENODEV;
 743                 goto err_disable_pdev;
 744         }
 745         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
 746                 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
 747                 err = -ENODEV;
 748                 goto err_disable_pdev;
 749         }
 750
 751         err = pci_request_region(pdev, 0, DRV_NAME);
 752         if (err) {
 753                 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
 754                 goto err_disable_pdev;
 755         }
 756
 757         err = pci_request_region(pdev, 2, DRV_NAME);
 758         if (err) {
 759                 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
 760                 goto err_release_bar0;
 761         }
 762
 763         pci_set_master(pdev);
 764
 765         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 766         if (err) {
 767                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
 768                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 769                 if (err) {
 770                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
 771                         goto err_release_bar2;
 772                 }
 773         }
 774         err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
 775         if (err) {
 776                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
 777                          "consistent PCI DMA mask.\n");
 778                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
 779                 if (err) {
 780                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
 781                                 "aborting.\n");
 782                         goto err_release_bar2;
 783                 }
 784         }
 785
 786         priv = kzalloc(sizeof *priv, GFP_KERNEL);
 787         if (!priv) {
 788                 dev_err(&pdev->dev, "Device struct alloc failed, "
 789                         "aborting.\n");
 790                 err = -ENOMEM;
 791                 goto err_release_bar2;
 792         }
 793
 794         dev       = &priv->dev;
 795         dev->pdev = pdev;
 796         INIT_LIST_HEAD(&priv->ctx_list);
 797         spin_lock_init(&priv->ctx_lock);
 798
 799         /*
 800          * Now reset the HCA before we touch the PCI capabilities or
 801          * attempt a firmware command, since a boot ROM may have left
 802          * the HCA in an undefined state.
 803          */
 804         err = mlx4_reset(dev);
 805         if (err) {
 806                 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
 807                 goto err_free_dev;
 808         }
 809
 810         if (mlx4_cmd_init(dev)) {
 811                 mlx4_err(dev, "Failed to init command interface, aborting.\n");
 812                 goto err_free_dev;
 813         }
 814
 815         err = mlx4_init_hca(dev);
 816         if (err)
 817                 goto err_cmd;
 818
 819         mlx4_enable_msi_x(dev);
 820
 821         err = mlx4_setup_hca(dev);
 822         if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X)) {
 823                 dev->flags &= ~MLX4_FLAG_MSI_X;
 824                 pci_disable_msix(pdev);
 825                 err = mlx4_setup_hca(dev);
 826         }
 827
 828         if (err)
 829                 goto err_close;
 830
 831         err = mlx4_register_device(dev);
 832         if (err)
 833                 goto err_cleanup;
 834
 835         pci_set_drvdata(pdev, dev);
 836
 837         return 0;
 838
 839 err_cleanup:
 840         mlx4_cleanup_mcg_table(dev);
 841         mlx4_cleanup_qp_table(dev);
 842         mlx4_cleanup_srq_table(dev);
 843         mlx4_cleanup_cq_table(dev);
 844         mlx4_cmd_use_polling(dev);
 845         mlx4_cleanup_eq_table(dev);
 846         mlx4_cleanup_mr_table(dev);
 847         mlx4_cleanup_pd_table(dev);
 848         mlx4_cleanup_uar_table(dev);
 849
 850 err_close:
 851         if (dev->flags & MLX4_FLAG_MSI_X)
 852                 pci_disable_msix(pdev);
 853
 854         mlx4_close_hca(dev);
 855
 856 err_cmd:
 857         mlx4_cmd_cleanup(dev);
 858
 859 err_free_dev:
 860         kfree(priv);
 861
 862 err_release_bar2:
 863         pci_release_region(pdev, 2);
 864
 865 err_release_bar0:
 866         pci_release_region(pdev, 0);
 867
 868 err_disable_pdev:
 869         pci_disable_device(pdev);
 870         pci_set_drvdata(pdev, NULL);
 871         return err;
 872 }
 873
 874 static void __devexit mlx4_remove_one(struct pci_dev *pdev)
 875 {
 876         struct mlx4_dev  *dev  = pci_get_drvdata(pdev);
 877         struct mlx4_priv *priv = mlx4_priv(dev);
 878         int p;
 879
 880         if (dev) {
 881                 mlx4_unregister_device(dev);
 882
 883                 for (p = 1; p <= dev->caps.num_ports; ++p)
 884                         mlx4_CLOSE_PORT(dev, p);
 885
 886                 mlx4_cleanup_mcg_table(dev);
 887                 mlx4_cleanup_qp_table(dev);
 888                 mlx4_cleanup_srq_table(dev);
 889                 mlx4_cleanup_cq_table(dev);
 890                 mlx4_cmd_use_polling(dev);
 891                 mlx4_cleanup_eq_table(dev);
 892                 mlx4_cleanup_mr_table(dev);
 893                 mlx4_cleanup_pd_table(dev);
 894
 895                 iounmap(priv->kar);
 896                 mlx4_uar_free(dev, &priv->driver_uar);
 897                 mlx4_cleanup_uar_table(dev);
 898                 mlx4_close_hca(dev);
 899                 mlx4_cmd_cleanup(dev);
 900
 901                 if (dev->flags & MLX4_FLAG_MSI_X)
 902                         pci_disable_msix(pdev);
 903
 904                 kfree(priv);
 905                 pci_release_region(pdev, 2);
 906                 pci_release_region(pdev, 0);
 907                 pci_disable_device(pdev);
 908                 pci_set_drvdata(pdev, NULL);
 909         }
 910 }
 911
 912 int mlx4_restart_one(struct pci_dev *pdev)
 913 {
 914         mlx4_remove_one(pdev);
 915         return mlx4_init_one(pdev, NULL);
 916 }
 917
 918 static struct pci_device_id mlx4_pci_table[] = {
 919         { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
 920         { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
 921         { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
 922         { PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
 923         { PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
 924         { 0, }
 925 };
 926
 927 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
 928
 929 static struct pci_driver mlx4_driver = {
 930         .name           = DRV_NAME,
 931         .id_table       = mlx4_pci_table,
 932         .probe          = mlx4_init_one,
 933         .remove         = __devexit_p(mlx4_remove_one)
 934 };
 935
 936 static int __init mlx4_init(void)
 937 {
 938         int ret;
 939
 940         ret = mlx4_catas_init();
 941         if (ret)
 942                 return ret;
 943
 944         ret = pci_register_driver(&mlx4_driver);
 945         return ret < 0 ? ret : 0;
 946 }
 947
 948 static void __exit mlx4_cleanup(void)
 949 {
 950         pci_unregister_driver(&mlx4_driver);
 951         mlx4_catas_cleanup();
 952 }
 953
 954 module_init(mlx4_init);
 955 module_exit(mlx4_cleanup);