git.oblomov.eu Git - linux-2.6/blob - 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;
  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  = 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
  92         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
  93         if (err) {
  94                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
  95                 return err;
  96         }
  97
  98         if (dev_cap->min_page_sz > PAGE_SIZE) {
  99                 mlx4_err(dev, "HCA minimum page size of %d bigger than "
 100                          "kernel PAGE_SIZE of %ld, aborting.\n",
 101                          dev_cap->min_page_sz, PAGE_SIZE);
 102                 return -ENODEV;
 103         }
 104         if (dev_cap->num_ports > MLX4_MAX_PORTS) {
 105                 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
 106                          "aborting.\n",
 107                          dev_cap->num_ports, MLX4_MAX_PORTS);
 108                 return -ENODEV;
 109         }
 110
 111         if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
 112                 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
 113                          "PCI resource 2 size of 0x%llx, aborting.\n",
 114                          dev_cap->uar_size,
 115                          (unsigned long long) pci_resource_len(dev->pdev, 2));
 116                 return -ENODEV;
 117         }
 118
 119         dev->caps.num_ports          = dev_cap->num_ports;
 120         dev->caps.num_uars           = dev_cap->uar_size / PAGE_SIZE;
 121         dev->caps.vl_cap             = dev_cap->max_vl;
 122         dev->caps.mtu_cap            = dev_cap->max_mtu;
 123         dev->caps.gid_table_len      = dev_cap->max_gids;
 124         dev->caps.pkey_table_len     = dev_cap->max_pkeys;
 125         dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
 126         dev->caps.bf_reg_size        = dev_cap->bf_reg_size;
 127         dev->caps.bf_regs_per_page   = dev_cap->bf_regs_per_page;
 128         dev->caps.max_sq_sg          = dev_cap->max_sq_sg;
 129         dev->caps.max_rq_sg          = dev_cap->max_rq_sg;
 130         dev->caps.max_wqes           = dev_cap->max_qp_sz;
 131         dev->caps.max_qp_init_rdma   = dev_cap->max_requester_per_qp;
 132         dev->caps.reserved_qps       = dev_cap->reserved_qps;
 133         dev->caps.max_srq_wqes       = dev_cap->max_srq_sz;
 134         dev->caps.max_srq_sge        = dev_cap->max_rq_sg - 1;
 135         dev->caps.reserved_srqs      = dev_cap->reserved_srqs;
 136         dev->caps.max_sq_desc_sz     = dev_cap->max_sq_desc_sz;
 137         dev->caps.max_rq_desc_sz     = dev_cap->max_rq_desc_sz;
 138         dev->caps.num_qp_per_mgm     = MLX4_QP_PER_MGM;
 139         /*
 140          * Subtract 1 from the limit because we need to allocate a
 141          * spare CQE so the HCA HW can tell the difference between an
 142          * empty CQ and a full CQ.
 143          */
 144         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
 145         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
 146         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
 147         dev->caps.reserved_mtts      = dev_cap->reserved_mtts;
 148         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
 149         dev->caps.reserved_uars      = dev_cap->reserved_uars;
 150         dev->caps.reserved_pds       = dev_cap->reserved_pds;
 151         dev->caps.port_width_cap     = dev_cap->max_port_width;
 152         dev->caps.mtt_entry_sz       = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
 153         dev->caps.page_size_cap      = ~(u32) (dev_cap->min_page_sz - 1);
 154         dev->caps.flags              = dev_cap->flags;
 155         dev->caps.stat_rate_support  = dev_cap->stat_rate_support;
 156
 157         return 0;
 158 }
 159
 160 static int __devinit mlx4_load_fw(struct mlx4_dev *dev)
 161 {
 162         struct mlx4_priv *priv = mlx4_priv(dev);
 163         int err;
 164
 165         priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
 166                                          GFP_HIGHUSER | __GFP_NOWARN);
 167         if (!priv->fw.fw_icm) {
 168                 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
 169                 return -ENOMEM;
 170         }
 171
 172         err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
 173         if (err) {
 174                 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
 175                 goto err_free;
 176         }
 177
 178         err = mlx4_RUN_FW(dev);
 179         if (err) {
 180                 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
 181                 goto err_unmap_fa;
 182         }
 183
 184         return 0;
 185
 186 err_unmap_fa:
 187         mlx4_UNMAP_FA(dev);
 188
 189 err_free:
 190         mlx4_free_icm(dev, priv->fw.fw_icm);
 191         return err;
 192 }
 193
 194 static int __devinit mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
 195                                           int cmpt_entry_sz)
 196 {
 197         struct mlx4_priv *priv = mlx4_priv(dev);
 198         int err;
 199
 200         err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
 201                                   cmpt_base +
 202                                   ((u64) (MLX4_CMPT_TYPE_QP *
 203                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 204                                   cmpt_entry_sz, dev->caps.num_qps,
 205                                   dev->caps.reserved_qps, 0);
 206         if (err)
 207                 goto err;
 208
 209         err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
 210                                   cmpt_base +
 211                                   ((u64) (MLX4_CMPT_TYPE_SRQ *
 212                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 213                                   cmpt_entry_sz, dev->caps.num_srqs,
 214                                   dev->caps.reserved_srqs, 0);
 215         if (err)
 216                 goto err_qp;
 217
 218         err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
 219                                   cmpt_base +
 220                                   ((u64) (MLX4_CMPT_TYPE_CQ *
 221                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 222                                   cmpt_entry_sz, dev->caps.num_cqs,
 223                                   dev->caps.reserved_cqs, 0);
 224         if (err)
 225                 goto err_srq;
 226
 227         err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
 228                                   cmpt_base +
 229                                   ((u64) (MLX4_CMPT_TYPE_EQ *
 230                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 231                                   cmpt_entry_sz,
 232                                   roundup_pow_of_two(MLX4_NUM_EQ +
 233                                                      dev->caps.reserved_eqs),
 234                                   MLX4_NUM_EQ + dev->caps.reserved_eqs, 0);
 235         if (err)
 236                 goto err_cq;
 237
 238         return 0;
 239
 240 err_cq:
 241         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 242
 243 err_srq:
 244         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 245
 246 err_qp:
 247         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 248
 249 err:
 250         return err;
 251 }
 252
 253 static int __devinit mlx4_init_icm(struct mlx4_dev *dev,
 254                                    struct mlx4_dev_cap *dev_cap,
 255                                    struct mlx4_init_hca_param *init_hca,
 256                                    u64 icm_size)
 257 {
 258         struct mlx4_priv *priv = mlx4_priv(dev);
 259         u64 aux_pages;
 260         int err;
 261
 262         err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
 263         if (err) {
 264                 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
 265                 return err;
 266         }
 267
 268         mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
 269                  (unsigned long long) icm_size >> 10,
 270                  (unsigned long long) aux_pages << 2);
 271
 272         priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
 273                                           GFP_HIGHUSER | __GFP_NOWARN);
 274         if (!priv->fw.aux_icm) {
 275                 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
 276                 return -ENOMEM;
 277         }
 278
 279         err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
 280         if (err) {
 281                 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
 282                 goto err_free_aux;
 283         }
 284
 285         err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
 286         if (err) {
 287                 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
 288                 goto err_unmap_aux;
 289         }
 290
 291         err = mlx4_map_eq_icm(dev, init_hca->eqc_base);
 292         if (err) {
 293                 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
 294                 goto err_unmap_cmpt;
 295         }
 296
 297         err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
 298                                   init_hca->mtt_base,
 299                                   dev->caps.mtt_entry_sz,
 300                                   dev->caps.num_mtt_segs,
 301                                   dev->caps.reserved_mtts, 1);
 302         if (err) {
 303                 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
 304                 goto err_unmap_eq;
 305         }
 306
 307         err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
 308                                   init_hca->dmpt_base,
 309                                   dev_cap->dmpt_entry_sz,
 310                                   dev->caps.num_mpts,
 311                                   dev->caps.reserved_mrws, 1);
 312         if (err) {
 313                 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
 314                 goto err_unmap_mtt;
 315         }
 316
 317         err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
 318                                   init_hca->qpc_base,
 319                                   dev_cap->qpc_entry_sz,
 320                                   dev->caps.num_qps,
 321                                   dev->caps.reserved_qps, 0);
 322         if (err) {
 323                 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
 324                 goto err_unmap_dmpt;
 325         }
 326
 327         err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
 328                                   init_hca->auxc_base,
 329                                   dev_cap->aux_entry_sz,
 330                                   dev->caps.num_qps,
 331                                   dev->caps.reserved_qps, 0);
 332         if (err) {
 333                 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
 334                 goto err_unmap_qp;
 335         }
 336
 337         err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
 338                                   init_hca->altc_base,
 339                                   dev_cap->altc_entry_sz,
 340                                   dev->caps.num_qps,
 341                                   dev->caps.reserved_qps, 0);
 342         if (err) {
 343                 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
 344                 goto err_unmap_auxc;
 345         }
 346
 347         err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
 348                                   init_hca->rdmarc_base,
 349                                   dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
 350                                   dev->caps.num_qps,
 351                                   dev->caps.reserved_qps, 0);
 352         if (err) {
 353                 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
 354                 goto err_unmap_altc;
 355         }
 356
 357         err = mlx4_init_icm_table(dev, &priv->cq_table.table,
 358                                   init_hca->cqc_base,
 359                                   dev_cap->cqc_entry_sz,
 360                                   dev->caps.num_cqs,
 361                                   dev->caps.reserved_cqs, 0);
 362         if (err) {
 363                 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
 364                 goto err_unmap_rdmarc;
 365         }
 366
 367         err = mlx4_init_icm_table(dev, &priv->srq_table.table,
 368                                   init_hca->srqc_base,
 369                                   dev_cap->srq_entry_sz,
 370                                   dev->caps.num_srqs,
 371                                   dev->caps.reserved_srqs, 0);
 372         if (err) {
 373                 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
 374                 goto err_unmap_cq;
 375         }
 376
 377         /*
 378          * It's not strictly required, but for simplicity just map the
 379          * whole multicast group table now.  The table isn't very big
 380          * and it's a lot easier than trying to track ref counts.
 381          */
 382         err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
 383                                   init_hca->mc_base, MLX4_MGM_ENTRY_SIZE,
 384                                   dev->caps.num_mgms + dev->caps.num_amgms,
 385                                   dev->caps.num_mgms + dev->caps.num_amgms,
 386                                   0);
 387         if (err) {
 388                 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
 389                 goto err_unmap_srq;
 390         }
 391
 392         return 0;
 393
 394 err_unmap_srq:
 395         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
 396
 397 err_unmap_cq:
 398         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
 399
 400 err_unmap_rdmarc:
 401         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
 402
 403 err_unmap_altc:
 404         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
 405
 406 err_unmap_auxc:
 407         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
 408
 409 err_unmap_qp:
 410         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
 411
 412 err_unmap_dmpt:
 413         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
 414
 415 err_unmap_mtt:
 416         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
 417
 418 err_unmap_eq:
 419         mlx4_unmap_eq_icm(dev);
 420
 421 err_unmap_cmpt:
 422         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
 423         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 424         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 425         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 426
 427 err_unmap_aux:
 428         mlx4_UNMAP_ICM_AUX(dev);
 429
 430 err_free_aux:
 431         mlx4_free_icm(dev, priv->fw.aux_icm);
 432
 433         return err;
 434 }
 435
 436 static void mlx4_free_icms(struct mlx4_dev *dev)
 437 {
 438         struct mlx4_priv *priv = mlx4_priv(dev);
 439
 440         mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
 441         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
 442         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
 443         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
 444         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
 445         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
 446         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
 447         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
 448         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
 449         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
 450         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 451         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 452         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 453         mlx4_unmap_eq_icm(dev);
 454
 455         mlx4_UNMAP_ICM_AUX(dev);
 456         mlx4_free_icm(dev, priv->fw.aux_icm);
 457 }
 458
 459 static void mlx4_close_hca(struct mlx4_dev *dev)
 460 {
 461         mlx4_CLOSE_HCA(dev, 0);
 462         mlx4_free_icms(dev);
 463         mlx4_UNMAP_FA(dev);
 464         mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm);
 465 }
 466
 467 static int __devinit mlx4_init_hca(struct mlx4_dev *dev)
 468 {
 469         struct mlx4_priv          *priv = mlx4_priv(dev);
 470         struct mlx4_adapter        adapter;
 471         struct mlx4_dev_cap        dev_cap;
 472         struct mlx4_profile        profile;
 473         struct mlx4_init_hca_param init_hca;
 474         u64 icm_size;
 475         int err;
 476
 477         err = mlx4_QUERY_FW(dev);
 478         if (err) {
 479                 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
 480                 return err;
 481         }
 482
 483         err = mlx4_load_fw(dev);
 484         if (err) {
 485                 mlx4_err(dev, "Failed to start FW, aborting.\n");
 486                 return err;
 487         }
 488
 489         err = mlx4_dev_cap(dev, &dev_cap);
 490         if (err) {
 491                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
 492                 goto err_stop_fw;
 493         }
 494
 495         profile = default_profile;
 496
 497         icm_size = mlx4_make_profile(dev, &profile, &dev_cap, &init_hca);
 498         if ((long long) icm_size < 0) {
 499                 err = icm_size;
 500                 goto err_stop_fw;
 501         }
 502
 503         init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
 504
 505         err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
 506         if (err)
 507                 goto err_stop_fw;
 508
 509         err = mlx4_INIT_HCA(dev, &init_hca);
 510         if (err) {
 511                 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
 512                 goto err_free_icm;
 513         }
 514
 515         err = mlx4_QUERY_ADAPTER(dev, &adapter);
 516         if (err) {
 517                 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
 518                 goto err_close;
 519         }
 520
 521         priv->eq_table.inta_pin = adapter.inta_pin;
 522         priv->rev_id            = adapter.revision_id;
 523         memcpy(priv->board_id, adapter.board_id, sizeof priv->board_id);
 524
 525         return 0;
 526
 527 err_close:
 528         mlx4_close_hca(dev);
 529
 530 err_free_icm:
 531         mlx4_free_icms(dev);
 532
 533 err_stop_fw:
 534         mlx4_UNMAP_FA(dev);
 535         mlx4_free_icm(dev, priv->fw.fw_icm);
 536
 537         return err;
 538 }
 539
 540 static int __devinit mlx4_setup_hca(struct mlx4_dev *dev)
 541 {
 542         struct mlx4_priv *priv = mlx4_priv(dev);
 543         int err;
 544
 545         MLX4_INIT_DOORBELL_LOCK(&priv->doorbell_lock);
 546
 547         err = mlx4_init_uar_table(dev);
 548         if (err) {
 549                 mlx4_err(dev, "Failed to initialize "
 550                          "user access region table, aborting.\n");
 551                 return err;
 552         }
 553
 554         err = mlx4_uar_alloc(dev, &priv->driver_uar);
 555         if (err) {
 556                 mlx4_err(dev, "Failed to allocate driver access region, "
 557                          "aborting.\n");
 558                 goto err_uar_table_free;
 559         }
 560
 561         priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 562         if (!priv->kar) {
 563                 mlx4_err(dev, "Couldn't map kernel access region, "
 564                          "aborting.\n");
 565                 err = -ENOMEM;
 566                 goto err_uar_free;
 567         }
 568
 569         err = mlx4_init_pd_table(dev);
 570         if (err) {
 571                 mlx4_err(dev, "Failed to initialize "
 572                          "protection domain table, aborting.\n");
 573                 goto err_kar_unmap;
 574         }
 575
 576         err = mlx4_init_mr_table(dev);
 577         if (err) {
 578                 mlx4_err(dev, "Failed to initialize "
 579                          "memory region table, aborting.\n");
 580                 goto err_pd_table_free;
 581         }
 582
 583         mlx4_map_catas_buf(dev);
 584
 585         err = mlx4_init_eq_table(dev);
 586         if (err) {
 587                 mlx4_err(dev, "Failed to initialize "
 588                          "event queue table, aborting.\n");
 589                 goto err_catas_buf;
 590         }
 591
 592         err = mlx4_cmd_use_events(dev);
 593         if (err) {
 594                 mlx4_err(dev, "Failed to switch to event-driven "
 595                          "firmware commands, aborting.\n");
 596                 goto err_eq_table_free;
 597         }
 598
 599         err = mlx4_NOP(dev);
 600         if (err) {
 601                 mlx4_err(dev, "NOP command failed to generate interrupt "
 602                          "(IRQ %d), aborting.\n",
 603                          priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
 604                 if (dev->flags & MLX4_FLAG_MSI_X)
 605                         mlx4_err(dev, "Try again with MSI-X disabled.\n");
 606                 else
 607                         mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
 608
 609                 goto err_cmd_poll;
 610         }
 611
 612         mlx4_dbg(dev, "NOP command IRQ test passed\n");
 613
 614         err = mlx4_init_cq_table(dev);
 615         if (err) {
 616                 mlx4_err(dev, "Failed to initialize "
 617                          "completion queue table, aborting.\n");
 618                 goto err_cmd_poll;
 619         }
 620
 621         err = mlx4_init_srq_table(dev);
 622         if (err) {
 623                 mlx4_err(dev, "Failed to initialize "
 624                          "shared receive queue table, aborting.\n");
 625                 goto err_cq_table_free;
 626         }
 627
 628         err = mlx4_init_qp_table(dev);
 629         if (err) {
 630                 mlx4_err(dev, "Failed to initialize "
 631                          "queue pair table, aborting.\n");
 632                 goto err_srq_table_free;
 633         }
 634
 635         err = mlx4_init_mcg_table(dev);
 636         if (err) {
 637                 mlx4_err(dev, "Failed to initialize "
 638                          "multicast group table, aborting.\n");
 639                 goto err_qp_table_free;
 640         }
 641
 642         return 0;
 643
 644 err_qp_table_free:
 645         mlx4_cleanup_qp_table(dev);
 646
 647 err_srq_table_free:
 648         mlx4_cleanup_srq_table(dev);
 649
 650 err_cq_table_free:
 651         mlx4_cleanup_cq_table(dev);
 652
 653 err_cmd_poll:
 654         mlx4_cmd_use_polling(dev);
 655
 656 err_eq_table_free:
 657         mlx4_cleanup_eq_table(dev);
 658
 659 err_catas_buf:
 660         mlx4_unmap_catas_buf(dev);
 661         mlx4_cleanup_mr_table(dev);
 662
 663 err_pd_table_free:
 664         mlx4_cleanup_pd_table(dev);
 665
 666 err_kar_unmap:
 667         iounmap(priv->kar);
 668
 669 err_uar_free:
 670         mlx4_uar_free(dev, &priv->driver_uar);
 671
 672 err_uar_table_free:
 673         mlx4_cleanup_uar_table(dev);
 674         return err;
 675 }
 676
 677 static void __devinit mlx4_enable_msi_x(struct mlx4_dev *dev)
 678 {
 679         struct mlx4_priv *priv = mlx4_priv(dev);
 680         struct msix_entry entries[MLX4_NUM_EQ];
 681         int err;
 682         int i;
 683
 684         if (msi_x) {
 685                 for (i = 0; i < MLX4_NUM_EQ; ++i)
 686                         entries[i].entry = i;
 687
 688                 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
 689                 if (err) {
 690                         if (err > 0)
 691                                 mlx4_info(dev, "Only %d MSI-X vectors available, "
 692                                           "not using MSI-X\n", err);
 693                         goto no_msi;
 694                 }
 695
 696                 for (i = 0; i < MLX4_NUM_EQ; ++i)
 697                         priv->eq_table.eq[i].irq = entries[i].vector;
 698
 699                 dev->flags |= MLX4_FLAG_MSI_X;
 700                 return;
 701         }
 702
 703 no_msi:
 704         for (i = 0; i < MLX4_NUM_EQ; ++i)
 705                 priv->eq_table.eq[i].irq = dev->pdev->irq;
 706 }
 707
 708 static int __devinit mlx4_init_one(struct pci_dev *pdev,
 709                                    const struct pci_device_id *id)
 710 {
 711         static int mlx4_version_printed;
 712         struct mlx4_priv *priv;
 713         struct mlx4_dev *dev;
 714         int err;
 715
 716         if (!mlx4_version_printed) {
 717                 printk(KERN_INFO "%s", mlx4_version);
 718                 ++mlx4_version_printed;
 719         }
 720
 721         printk(KERN_INFO PFX "Initializing %s\n",
 722                pci_name(pdev));
 723
 724         err = pci_enable_device(pdev);
 725         if (err) {
 726                 dev_err(&pdev->dev, "Cannot enable PCI device, "
 727                         "aborting.\n");
 728                 return err;
 729         }
 730
 731         /*
 732          * Check for BARs.  We expect 0: 1MB, 2: 8MB, 4: DDR (may not
 733          * be present)
 734          */
 735         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
 736             pci_resource_len(pdev, 0) != 1 << 20) {
 737                 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
 738                 err = -ENODEV;
 739                 goto err_disable_pdev;
 740         }
 741         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
 742                 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
 743                 err = -ENODEV;
 744                 goto err_disable_pdev;
 745         }
 746
 747         err = pci_request_region(pdev, 0, DRV_NAME);
 748         if (err) {
 749                 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
 750                 goto err_disable_pdev;
 751         }
 752
 753         err = pci_request_region(pdev, 2, DRV_NAME);
 754         if (err) {
 755                 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
 756                 goto err_release_bar0;
 757         }
 758
 759         pci_set_master(pdev);
 760
 761         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 762         if (err) {
 763                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
 764                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 765                 if (err) {
 766                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
 767                         goto err_release_bar2;
 768                 }
 769         }
 770         err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
 771         if (err) {
 772                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
 773                          "consistent PCI DMA mask.\n");
 774                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
 775                 if (err) {
 776                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
 777                                 "aborting.\n");
 778                         goto err_release_bar2;
 779                 }
 780         }
 781
 782         priv = kzalloc(sizeof *priv, GFP_KERNEL);
 783         if (!priv) {
 784                 dev_err(&pdev->dev, "Device struct alloc failed, "
 785                         "aborting.\n");
 786                 err = -ENOMEM;
 787                 goto err_release_bar2;
 788         }
 789
 790         dev       = &priv->dev;
 791         dev->pdev = pdev;
 792
 793         /*
 794          * Now reset the HCA before we touch the PCI capabilities or
 795          * attempt a firmware command, since a boot ROM may have left
 796          * the HCA in an undefined state.
 797          */
 798         err = mlx4_reset(dev);
 799         if (err) {
 800                 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
 801                 goto err_free_dev;
 802         }
 803
 804         mlx4_enable_msi_x(dev);
 805
 806         if (mlx4_cmd_init(dev)) {
 807                 mlx4_err(dev, "Failed to init command interface, aborting.\n");
 808                 goto err_free_dev;
 809         }
 810
 811         err = mlx4_init_hca(dev);
 812         if (err)
 813                 goto err_cmd;
 814
 815         err = mlx4_setup_hca(dev);
 816         if (err)
 817                 goto err_close;
 818
 819         err = mlx4_register_device(dev);
 820         if (err)
 821                 goto err_cleanup;
 822
 823         pci_set_drvdata(pdev, dev);
 824
 825         return 0;
 826
 827 err_cleanup:
 828         mlx4_cleanup_mcg_table(dev);
 829         mlx4_cleanup_qp_table(dev);
 830         mlx4_cleanup_srq_table(dev);
 831         mlx4_cleanup_cq_table(dev);
 832         mlx4_cmd_use_polling(dev);
 833         mlx4_cleanup_eq_table(dev);
 834
 835         mlx4_unmap_catas_buf(dev);
 836
 837         mlx4_cleanup_mr_table(dev);
 838         mlx4_cleanup_pd_table(dev);
 839         mlx4_cleanup_uar_table(dev);
 840
 841 err_close:
 842         mlx4_close_hca(dev);
 843
 844 err_cmd:
 845         mlx4_cmd_cleanup(dev);
 846
 847 err_free_dev:
 848         if (dev->flags & MLX4_FLAG_MSI_X)
 849                 pci_disable_msix(pdev);
 850
 851         kfree(priv);
 852
 853 err_release_bar2:
 854         pci_release_region(pdev, 2);
 855
 856 err_release_bar0:
 857         pci_release_region(pdev, 0);
 858
 859 err_disable_pdev:
 860         pci_disable_device(pdev);
 861         pci_set_drvdata(pdev, NULL);
 862         return err;
 863 }
 864
 865 static void __devexit mlx4_remove_one(struct pci_dev *pdev)
 866 {
 867         struct mlx4_dev  *dev  = pci_get_drvdata(pdev);
 868         struct mlx4_priv *priv = mlx4_priv(dev);
 869         int p;
 870
 871         if (dev) {
 872                 mlx4_unregister_device(dev);
 873
 874                 for (p = 1; p <= dev->caps.num_ports; ++p)
 875                         mlx4_CLOSE_PORT(dev, p);
 876
 877                 mlx4_cleanup_mcg_table(dev);
 878                 mlx4_cleanup_qp_table(dev);
 879                 mlx4_cleanup_srq_table(dev);
 880                 mlx4_cleanup_cq_table(dev);
 881                 mlx4_cmd_use_polling(dev);
 882                 mlx4_cleanup_eq_table(dev);
 883
 884                 mlx4_unmap_catas_buf(dev);
 885
 886                 mlx4_cleanup_mr_table(dev);
 887                 mlx4_cleanup_pd_table(dev);
 888
 889                 iounmap(priv->kar);
 890                 mlx4_uar_free(dev, &priv->driver_uar);
 891                 mlx4_cleanup_uar_table(dev);
 892                 mlx4_close_hca(dev);
 893                 mlx4_cmd_cleanup(dev);
 894
 895                 if (dev->flags & MLX4_FLAG_MSI_X)
 896                         pci_disable_msix(pdev);
 897
 898                 kfree(priv);
 899                 pci_release_region(pdev, 2);
 900                 pci_release_region(pdev, 0);
 901                 pci_disable_device(pdev);
 902                 pci_set_drvdata(pdev, NULL);
 903         }
 904 }
 905
 906 static struct pci_device_id mlx4_pci_table[] = {
 907         { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
 908         { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
 909         { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
 910         { 0, }
 911 };
 912
 913 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
 914
 915 static struct pci_driver mlx4_driver = {
 916         .name           = DRV_NAME,
 917         .id_table       = mlx4_pci_table,
 918         .probe          = mlx4_init_one,
 919         .remove         = __devexit_p(mlx4_remove_one)
 920 };
 921
 922 static int __init mlx4_init(void)
 923 {
 924         int ret;
 925
 926         ret = pci_register_driver(&mlx4_driver);
 927         return ret < 0 ? ret : 0;
 928 }
 929
 930 static void __exit mlx4_cleanup(void)
 931 {
 932         pci_unregister_driver(&mlx4_driver);
 933 }
 934
 935 module_init(mlx4_init);
 936 module_exit(mlx4_cleanup);