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   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  * $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $
  33  */
  34
  35 #include <linux/config.h>
  36 #include <linux/version.h>
  37 #include <linux/module.h>
  38 #include <linux/init.h>
  39 #include <linux/errno.h>
  40 #include <linux/pci.h>
  41 #include <linux/interrupt.h>
  42
  43 #include "mthca_dev.h"
  44 #include "mthca_config_reg.h"
  45 #include "mthca_cmd.h"
  46 #include "mthca_profile.h"
  47 #include "mthca_memfree.h"
  48
  49 MODULE_AUTHOR("Roland Dreier");
  50 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
  51 MODULE_LICENSE("Dual BSD/GPL");
  52 MODULE_VERSION(DRV_VERSION);
  53
  54 #ifdef CONFIG_PCI_MSI
  55
  56 static int msi_x = 0;
  57 module_param(msi_x, int, 0444);
  58 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
  59
  60 static int msi = 0;
  61 module_param(msi, int, 0444);
  62 MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero");
  63
  64 #else /* CONFIG_PCI_MSI */
  65
  66 #define msi_x (0)
  67 #define msi   (0)
  68
  69 #endif /* CONFIG_PCI_MSI */
  70
  71 static const char mthca_version[] __devinitdata =
  72         "ib_mthca: Mellanox InfiniBand HCA driver v"
  73         DRV_VERSION " (" DRV_RELDATE ")\n";
  74
  75 static struct mthca_profile default_profile = {
  76         .num_qp            = 1 << 16,
  77         .rdb_per_qp        = 4,
  78         .num_cq            = 1 << 16,
  79         .num_mcg           = 1 << 13,
  80         .num_mpt           = 1 << 17,
  81         .num_mtt           = 1 << 20,
  82         .num_udav          = 1 << 15,   /* Tavor only */
  83         .fmr_reserved_mtts = 1 << 18,   /* Tavor only */
  84         .uarc_size         = 1 << 18,   /* Arbel only */
  85 };
  86
  87 static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
  88 {
  89         int cap;
  90         u16 val;
  91
  92         /* First try to max out Read Byte Count */
  93         cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
  94         if (cap) {
  95                 if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) {
  96                         mthca_err(mdev, "Couldn't read PCI-X command register, "
  97                                   "aborting.\n");
  98                         return -ENODEV;
  99                 }
 100                 val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2);
 101                 if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) {
 102                         mthca_err(mdev, "Couldn't write PCI-X command register, "
 103                                   "aborting.\n");
 104                         return -ENODEV;
 105                 }
 106         } else if (mdev->hca_type == TAVOR)
 107                 mthca_info(mdev, "No PCI-X capability, not setting RBC.\n");
 108
 109         cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
 110         if (cap) {
 111                 if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) {
 112                         mthca_err(mdev, "Couldn't read PCI Express device control "
 113                                   "register, aborting.\n");
 114                         return -ENODEV;
 115                 }
 116                 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
 117                 if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) {
 118                         mthca_err(mdev, "Couldn't write PCI Express device control "
 119                                   "register, aborting.\n");
 120                         return -ENODEV;
 121                 }
 122         } else if (mdev->hca_type == ARBEL_NATIVE ||
 123                    mdev->hca_type == ARBEL_COMPAT)
 124                 mthca_info(mdev, "No PCI Express capability, "
 125                            "not setting Max Read Request Size.\n");
 126
 127         return 0;
 128 }
 129
 130 static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
 131 {
 132         int err;
 133         u8 status;
 134
 135         err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status);
 136         if (err) {
 137                 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
 138                 return err;
 139         }
 140         if (status) {
 141                 mthca_err(mdev, "QUERY_DEV_LIM returned status 0x%02x, "
 142                           "aborting.\n", status);
 143                 return -EINVAL;
 144         }
 145         if (dev_lim->min_page_sz > PAGE_SIZE) {
 146                 mthca_err(mdev, "HCA minimum page size of %d bigger than "
 147                           "kernel PAGE_SIZE of %ld, aborting.\n",
 148                           dev_lim->min_page_sz, PAGE_SIZE);
 149                 return -ENODEV;
 150         }
 151         if (dev_lim->num_ports > MTHCA_MAX_PORTS) {
 152                 mthca_err(mdev, "HCA has %d ports, but we only support %d, "
 153                           "aborting.\n",
 154                           dev_lim->num_ports, MTHCA_MAX_PORTS);
 155                 return -ENODEV;
 156         }
 157
 158         mdev->limits.num_ports          = dev_lim->num_ports;
 159         mdev->limits.vl_cap             = dev_lim->max_vl;
 160         mdev->limits.mtu_cap            = dev_lim->max_mtu;
 161         mdev->limits.gid_table_len      = dev_lim->max_gids;
 162         mdev->limits.pkey_table_len     = dev_lim->max_pkeys;
 163         mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay;
 164         mdev->limits.max_sg             = dev_lim->max_sg;
 165         mdev->limits.reserved_qps       = dev_lim->reserved_qps;
 166         mdev->limits.reserved_srqs      = dev_lim->reserved_srqs;
 167         mdev->limits.reserved_eecs      = dev_lim->reserved_eecs;
 168         mdev->limits.reserved_cqs       = dev_lim->reserved_cqs;
 169         mdev->limits.reserved_eqs       = dev_lim->reserved_eqs;
 170         mdev->limits.reserved_mtts      = dev_lim->reserved_mtts;
 171         mdev->limits.reserved_mrws      = dev_lim->reserved_mrws;
 172         mdev->limits.reserved_uars      = dev_lim->reserved_uars;
 173         mdev->limits.reserved_pds       = dev_lim->reserved_pds;
 174
 175         /* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
 176            May be doable since hardware supports it for SRQ.
 177
 178            IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver.
 179
 180            IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not
 181            supported by driver. */
 182         mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
 183                 IB_DEVICE_PORT_ACTIVE_EVENT |
 184                 IB_DEVICE_SYS_IMAGE_GUID |
 185                 IB_DEVICE_RC_RNR_NAK_GEN;
 186
 187         if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR)
 188                 mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 189
 190         if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR)
 191                 mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 192
 193         if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI)
 194                 mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI;
 195
 196         if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG)
 197                 mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 198
 199         if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE)
 200                 mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 201
 202         if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
 203                 mdev->mthca_flags |= MTHCA_FLAG_SRQ;
 204
 205         return 0;
 206 }
 207
 208 static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
 209 {
 210         u8 status;
 211         int err;
 212         struct mthca_dev_lim        dev_lim;
 213         struct mthca_profile        profile;
 214         struct mthca_init_hca_param init_hca;
 215         struct mthca_adapter        adapter;
 216
 217         err = mthca_SYS_EN(mdev, &status);
 218         if (err) {
 219                 mthca_err(mdev, "SYS_EN command failed, aborting.\n");
 220                 return err;
 221         }
 222         if (status) {
 223                 mthca_err(mdev, "SYS_EN returned status 0x%02x, "
 224                           "aborting.\n", status);
 225                 return -EINVAL;
 226         }
 227
 228         err = mthca_QUERY_FW(mdev, &status);
 229         if (err) {
 230                 mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
 231                 goto err_disable;
 232         }
 233         if (status) {
 234                 mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
 235                           "aborting.\n", status);
 236                 err = -EINVAL;
 237                 goto err_disable;
 238         }
 239         err = mthca_QUERY_DDR(mdev, &status);
 240         if (err) {
 241                 mthca_err(mdev, "QUERY_DDR command failed, aborting.\n");
 242                 goto err_disable;
 243         }
 244         if (status) {
 245                 mthca_err(mdev, "QUERY_DDR returned status 0x%02x, "
 246                           "aborting.\n", status);
 247                 err = -EINVAL;
 248                 goto err_disable;
 249         }
 250
 251         err = mthca_dev_lim(mdev, &dev_lim);
 252
 253         profile = default_profile;
 254         profile.num_uar   = dev_lim.uar_size / PAGE_SIZE;
 255         profile.uarc_size = 0;
 256
 257         err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
 258         if (err < 0)
 259                 goto err_disable;
 260
 261         err = mthca_INIT_HCA(mdev, &init_hca, &status);
 262         if (err) {
 263                 mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
 264                 goto err_disable;
 265         }
 266         if (status) {
 267                 mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
 268                           "aborting.\n", status);
 269                 err = -EINVAL;
 270                 goto err_disable;
 271         }
 272
 273         err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
 274         if (err) {
 275                 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
 276                 goto err_close;
 277         }
 278         if (status) {
 279                 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
 280                           "aborting.\n", status);
 281                 err = -EINVAL;
 282                 goto err_close;
 283         }
 284
 285         mdev->eq_table.inta_pin = adapter.inta_pin;
 286         mdev->rev_id            = adapter.revision_id;
 287
 288         return 0;
 289
 290 err_close:
 291         mthca_CLOSE_HCA(mdev, 0, &status);
 292
 293 err_disable:
 294         mthca_SYS_DIS(mdev, &status);
 295
 296         return err;
 297 }
 298
 299 static int __devinit mthca_load_fw(struct mthca_dev *mdev)
 300 {
 301         u8 status;
 302         int err;
 303
 304         /* FIXME: use HCA-attached memory for FW if present */
 305
 306         mdev->fw.arbel.fw_icm =
 307                 mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages,
 308                                 GFP_HIGHUSER | __GFP_NOWARN);
 309         if (!mdev->fw.arbel.fw_icm) {
 310                 mthca_err(mdev, "Couldn't allocate FW area, aborting.\n");
 311                 return -ENOMEM;
 312         }
 313
 314         err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status);
 315         if (err) {
 316                 mthca_err(mdev, "MAP_FA command failed, aborting.\n");
 317                 goto err_free;
 318         }
 319         if (status) {
 320                 mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status);
 321                 err = -EINVAL;
 322                 goto err_free;
 323         }
 324         err = mthca_RUN_FW(mdev, &status);
 325         if (err) {
 326                 mthca_err(mdev, "RUN_FW command failed, aborting.\n");
 327                 goto err_unmap_fa;
 328         }
 329         if (status) {
 330                 mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status);
 331                 err = -EINVAL;
 332                 goto err_unmap_fa;
 333         }
 334
 335         return 0;
 336
 337 err_unmap_fa:
 338         mthca_UNMAP_FA(mdev, &status);
 339
 340 err_free:
 341         mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
 342         return err;
 343 }
 344
 345 static int __devinit mthca_init_icm(struct mthca_dev *mdev,
 346                                     struct mthca_dev_lim *dev_lim,
 347                                     struct mthca_init_hca_param *init_hca,
 348                                     u64 icm_size)
 349 {
 350         u64 aux_pages;
 351         u8 status;
 352         int err;
 353
 354         err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status);
 355         if (err) {
 356                 mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n");
 357                 return err;
 358         }
 359         if (status) {
 360                 mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, "
 361                           "aborting.\n", status);
 362                 return -EINVAL;
 363         }
 364
 365         mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n",
 366                   (unsigned long long) icm_size >> 10,
 367                   (unsigned long long) aux_pages << 2);
 368
 369         mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages,
 370                                                  GFP_HIGHUSER | __GFP_NOWARN);
 371         if (!mdev->fw.arbel.aux_icm) {
 372                 mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n");
 373                 return -ENOMEM;
 374         }
 375
 376         err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status);
 377         if (err) {
 378                 mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n");
 379                 goto err_free_aux;
 380         }
 381         if (status) {
 382                 mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status);
 383                 err = -EINVAL;
 384                 goto err_free_aux;
 385         }
 386
 387         err = mthca_map_eq_icm(mdev, init_hca->eqc_base);
 388         if (err) {
 389                 mthca_err(mdev, "Failed to map EQ context memory, aborting.\n");
 390                 goto err_unmap_aux;
 391         }
 392
 393         mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,
 394                                                          MTHCA_MTT_SEG_SIZE,
 395                                                          mdev->limits.num_mtt_segs,
 396                                                          mdev->limits.reserved_mtts, 1);
 397         if (!mdev->mr_table.mtt_table) {
 398                 mthca_err(mdev, "Failed to map MTT context memory, aborting.\n");
 399                 err = -ENOMEM;
 400                 goto err_unmap_eq;
 401         }
 402
 403         mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base,
 404                                                          dev_lim->mpt_entry_sz,
 405                                                          mdev->limits.num_mpts,
 406                                                          mdev->limits.reserved_mrws, 1);
 407         if (!mdev->mr_table.mpt_table) {
 408                 mthca_err(mdev, "Failed to map MPT context memory, aborting.\n");
 409                 err = -ENOMEM;
 410                 goto err_unmap_mtt;
 411         }
 412
 413         mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base,
 414                                                         dev_lim->qpc_entry_sz,
 415                                                         mdev->limits.num_qps,
 416                                                         mdev->limits.reserved_qps, 0);
 417         if (!mdev->qp_table.qp_table) {
 418                 mthca_err(mdev, "Failed to map QP context memory, aborting.\n");
 419                 err = -ENOMEM;
 420                 goto err_unmap_mpt;
 421         }
 422
 423         mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base,
 424                                                          dev_lim->eqpc_entry_sz,
 425                                                          mdev->limits.num_qps,
 426                                                          mdev->limits.reserved_qps, 0);
 427         if (!mdev->qp_table.eqp_table) {
 428                 mthca_err(mdev, "Failed to map EQP context memory, aborting.\n");
 429                 err = -ENOMEM;
 430                 goto err_unmap_qp;
 431         }
 432
 433         mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
 434                                                      dev_lim->cqc_entry_sz,
 435                                                      mdev->limits.num_cqs,
 436                                                      mdev->limits.reserved_cqs, 0);
 437         if (!mdev->cq_table.table) {
 438                 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
 439                 err = -ENOMEM;
 440                 goto err_unmap_eqp;
 441         }
 442
 443         /*
 444          * It's not strictly required, but for simplicity just map the
 445          * whole multicast group table now.  The table isn't very big
 446          * and it's a lot easier than trying to track ref counts.
 447          */
 448         mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base,
 449                                                       MTHCA_MGM_ENTRY_SIZE,
 450                                                       mdev->limits.num_mgms +
 451                                                       mdev->limits.num_amgms,
 452                                                       mdev->limits.num_mgms +
 453                                                       mdev->limits.num_amgms,
 454                                                       0);
 455         if (!mdev->mcg_table.table) {
 456                 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n");
 457                 err = -ENOMEM;
 458                 goto err_unmap_cq;
 459         }
 460
 461         return 0;
 462
 463 err_unmap_cq:
 464         mthca_free_icm_table(mdev, mdev->cq_table.table);
 465
 466 err_unmap_eqp:
 467         mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
 468
 469 err_unmap_qp:
 470         mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
 471
 472 err_unmap_mpt:
 473         mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
 474
 475 err_unmap_mtt:
 476         mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
 477
 478 err_unmap_eq:
 479         mthca_unmap_eq_icm(mdev);
 480
 481 err_unmap_aux:
 482         mthca_UNMAP_ICM_AUX(mdev, &status);
 483
 484 err_free_aux:
 485         mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
 486
 487         return err;
 488 }
 489
 490 static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
 491 {
 492         struct mthca_dev_lim        dev_lim;
 493         struct mthca_profile        profile;
 494         struct mthca_init_hca_param init_hca;
 495         struct mthca_adapter        adapter;
 496         u64 icm_size;
 497         u8 status;
 498         int err;
 499
 500         err = mthca_QUERY_FW(mdev, &status);
 501         if (err) {
 502                 mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
 503                 return err;
 504         }
 505         if (status) {
 506                 mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
 507                           "aborting.\n", status);
 508                 return -EINVAL;
 509         }
 510
 511         err = mthca_ENABLE_LAM(mdev, &status);
 512         if (err) {
 513                 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n");
 514                 return err;
 515         }
 516         if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) {
 517                 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n");
 518                 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM;
 519         } else if (status) {
 520                 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, "
 521                           "aborting.\n", status);
 522                 return -EINVAL;
 523         }
 524
 525         err = mthca_load_fw(mdev);
 526         if (err) {
 527                 mthca_err(mdev, "Failed to start FW, aborting.\n");
 528                 goto err_disable;
 529         }
 530
 531         err = mthca_dev_lim(mdev, &dev_lim);
 532         if (err) {
 533                 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
 534                 goto err_stop_fw;
 535         }
 536
 537         profile = default_profile;
 538         profile.num_uar  = dev_lim.uar_size / PAGE_SIZE;
 539         profile.num_udav = 0;
 540
 541         icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
 542         if ((int) icm_size < 0) {
 543                 err = icm_size;
 544                 goto err_stop_fw;
 545         }
 546
 547         err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size);
 548         if (err)
 549                 goto err_stop_fw;
 550
 551         err = mthca_INIT_HCA(mdev, &init_hca, &status);
 552         if (err) {
 553                 mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
 554                 goto err_free_icm;
 555         }
 556         if (status) {
 557                 mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
 558                           "aborting.\n", status);
 559                 err = -EINVAL;
 560                 goto err_free_icm;
 561         }
 562
 563         err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
 564         if (err) {
 565                 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
 566                 goto err_free_icm;
 567         }
 568         if (status) {
 569                 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
 570                           "aborting.\n", status);
 571                 err = -EINVAL;
 572                 goto err_free_icm;
 573         }
 574
 575         mdev->eq_table.inta_pin = adapter.inta_pin;
 576         mdev->rev_id            = adapter.revision_id;
 577
 578         return 0;
 579
 580 err_free_icm:
 581         mthca_free_icm_table(mdev, mdev->cq_table.table);
 582         mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
 583         mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
 584         mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
 585         mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
 586         mthca_unmap_eq_icm(mdev);
 587
 588         mthca_UNMAP_ICM_AUX(mdev, &status);
 589         mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
 590
 591 err_stop_fw:
 592         mthca_UNMAP_FA(mdev, &status);
 593         mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
 594
 595 err_disable:
 596         if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
 597                 mthca_DISABLE_LAM(mdev, &status);
 598
 599         return err;
 600 }
 601
 602 static int __devinit mthca_init_hca(struct mthca_dev *mdev)
 603 {
 604         if (mdev->hca_type == ARBEL_NATIVE)
 605                 return mthca_init_arbel(mdev);
 606         else
 607                 return mthca_init_tavor(mdev);
 608 }
 609
 610 static int __devinit mthca_setup_hca(struct mthca_dev *dev)
 611 {
 612         int err;
 613         u8 status;
 614
 615         MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock);
 616
 617         err = mthca_init_uar_table(dev);
 618         if (err) {
 619                 mthca_err(dev, "Failed to initialize "
 620                           "user access region table, aborting.\n");
 621                 return err;
 622         }
 623
 624         err = mthca_uar_alloc(dev, &dev->driver_uar);
 625         if (err) {
 626                 mthca_err(dev, "Failed to allocate driver access region, "
 627                           "aborting.\n");
 628                 goto err_uar_table_free;
 629         }
 630
 631         dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 632         if (!dev->kar) {
 633                 mthca_err(dev, "Couldn't map kernel access region, "
 634                           "aborting.\n");
 635                 err = -ENOMEM;
 636                 goto err_uar_free;
 637         }
 638
 639         err = mthca_init_pd_table(dev);
 640         if (err) {
 641                 mthca_err(dev, "Failed to initialize "
 642                           "protection domain table, aborting.\n");
 643                 goto err_kar_unmap;
 644         }
 645
 646         err = mthca_init_mr_table(dev);
 647         if (err) {
 648                 mthca_err(dev, "Failed to initialize "
 649                           "memory region table, aborting.\n");
 650                 goto err_pd_table_free;
 651         }
 652
 653         err = mthca_pd_alloc(dev, &dev->driver_pd);
 654         if (err) {
 655                 mthca_err(dev, "Failed to create driver PD, "
 656                           "aborting.\n");
 657                 goto err_mr_table_free;
 658         }
 659
 660         err = mthca_init_eq_table(dev);
 661         if (err) {
 662                 mthca_err(dev, "Failed to initialize "
 663                           "event queue table, aborting.\n");
 664                 goto err_pd_free;
 665         }
 666
 667         err = mthca_cmd_use_events(dev);
 668         if (err) {
 669                 mthca_err(dev, "Failed to switch to event-driven "
 670                           "firmware commands, aborting.\n");
 671                 goto err_eq_table_free;
 672         }
 673
 674         err = mthca_NOP(dev, &status);
 675         if (err || status) {
 676                 mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n",
 677                           dev->mthca_flags & MTHCA_FLAG_MSI_X ?
 678                           dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
 679                           dev->pdev->irq);
 680                 if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))
 681                         mthca_err(dev, "Try again with MSI/MSI-X disabled.\n");
 682                 else
 683                         mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n");
 684
 685                 goto err_cmd_poll;
 686         }
 687
 688         mthca_dbg(dev, "NOP command IRQ test passed\n");
 689
 690         err = mthca_init_cq_table(dev);
 691         if (err) {
 692                 mthca_err(dev, "Failed to initialize "
 693                           "completion queue table, aborting.\n");
 694                 goto err_cmd_poll;
 695         }
 696
 697         err = mthca_init_qp_table(dev);
 698         if (err) {
 699                 mthca_err(dev, "Failed to initialize "
 700                           "queue pair table, aborting.\n");
 701                 goto err_cq_table_free;
 702         }
 703
 704         err = mthca_init_av_table(dev);
 705         if (err) {
 706                 mthca_err(dev, "Failed to initialize "
 707                           "address vector table, aborting.\n");
 708                 goto err_qp_table_free;
 709         }
 710
 711         err = mthca_init_mcg_table(dev);
 712         if (err) {
 713                 mthca_err(dev, "Failed to initialize "
 714                           "multicast group table, aborting.\n");
 715                 goto err_av_table_free;
 716         }
 717
 718         return 0;
 719
 720 err_av_table_free:
 721         mthca_cleanup_av_table(dev);
 722
 723 err_qp_table_free:
 724         mthca_cleanup_qp_table(dev);
 725
 726 err_cq_table_free:
 727         mthca_cleanup_cq_table(dev);
 728
 729 err_cmd_poll:
 730         mthca_cmd_use_polling(dev);
 731
 732 err_eq_table_free:
 733         mthca_cleanup_eq_table(dev);
 734
 735 err_pd_free:
 736         mthca_pd_free(dev, &dev->driver_pd);
 737
 738 err_mr_table_free:
 739         mthca_cleanup_mr_table(dev);
 740
 741 err_pd_table_free:
 742         mthca_cleanup_pd_table(dev);
 743
 744 err_kar_unmap:
 745         iounmap(dev->kar);
 746
 747 err_uar_free:
 748         mthca_uar_free(dev, &dev->driver_uar);
 749
 750 err_uar_table_free:
 751         mthca_cleanup_uar_table(dev);
 752         return err;
 753 }
 754
 755 static int __devinit mthca_request_regions(struct pci_dev *pdev,
 756                                            int ddr_hidden)
 757 {
 758         int err;
 759
 760         /*
 761          * We can't just use pci_request_regions() because the MSI-X
 762          * table is right in the middle of the first BAR.  If we did
 763          * pci_request_region and grab all of the first BAR, then
 764          * setting up MSI-X would fail, since the PCI core wants to do
 765          * request_mem_region on the MSI-X vector table.
 766          *
 767          * So just request what we need right now, and request any
 768          * other regions we need when setting up EQs.
 769          */
 770         if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
 771                                 MTHCA_HCR_SIZE, DRV_NAME))
 772                 return -EBUSY;
 773
 774         err = pci_request_region(pdev, 2, DRV_NAME);
 775         if (err)
 776                 goto err_bar2_failed;
 777
 778         if (!ddr_hidden) {
 779                 err = pci_request_region(pdev, 4, DRV_NAME);
 780                 if (err)
 781                         goto err_bar4_failed;
 782         }
 783
 784         return 0;
 785
 786 err_bar4_failed:
 787         pci_release_region(pdev, 2);
 788
 789 err_bar2_failed:
 790         release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
 791                            MTHCA_HCR_SIZE);
 792
 793         return err;
 794 }
 795
 796 static void mthca_release_regions(struct pci_dev *pdev,
 797                                   int ddr_hidden)
 798 {
 799         if (!ddr_hidden)
 800                 pci_release_region(pdev, 4);
 801
 802         pci_release_region(pdev, 2);
 803
 804         release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
 805                            MTHCA_HCR_SIZE);
 806 }
 807
 808 static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev)
 809 {
 810         struct msix_entry entries[3];
 811         int err;
 812
 813         entries[0].entry = 0;
 814         entries[1].entry = 1;
 815         entries[2].entry = 2;
 816
 817         err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries));
 818         if (err) {
 819                 if (err > 0)
 820                         mthca_info(mdev, "Only %d MSI-X vectors available, "
 821                                    "not using MSI-X\n", err);
 822                 return err;
 823         }
 824
 825         mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector;
 826         mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector;
 827         mdev->eq_table.eq[MTHCA_EQ_CMD  ].msi_x_vector = entries[2].vector;
 828
 829         return 0;
 830 }
 831
 832 static void mthca_close_hca(struct mthca_dev *mdev)
 833 {
 834         u8 status;
 835
 836         mthca_CLOSE_HCA(mdev, 0, &status);
 837
 838         if (mdev->hca_type == ARBEL_NATIVE) {
 839                 mthca_free_icm_table(mdev, mdev->cq_table.table);
 840                 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
 841                 mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
 842                 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
 843                 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
 844                 mthca_unmap_eq_icm(mdev);
 845
 846                 mthca_UNMAP_ICM_AUX(mdev, &status);
 847                 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
 848
 849                 mthca_UNMAP_FA(mdev, &status);
 850                 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
 851
 852                 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
 853                         mthca_DISABLE_LAM(mdev, &status);
 854         } else
 855                 mthca_SYS_DIS(mdev, &status);
 856 }
 857
 858 static int __devinit mthca_init_one(struct pci_dev *pdev,
 859                                     const struct pci_device_id *id)
 860 {
 861         static int mthca_version_printed = 0;
 862         static int mthca_memfree_warned = 0;
 863         int ddr_hidden = 0;
 864         int err;
 865         struct mthca_dev *mdev;
 866
 867         if (!mthca_version_printed) {
 868                 printk(KERN_INFO "%s", mthca_version);
 869                 ++mthca_version_printed;
 870         }
 871
 872         printk(KERN_INFO PFX "Initializing %s (%s)\n",
 873                pci_pretty_name(pdev), pci_name(pdev));
 874
 875         err = pci_enable_device(pdev);
 876         if (err) {
 877                 dev_err(&pdev->dev, "Cannot enable PCI device, "
 878                         "aborting.\n");
 879                 return err;
 880         }
 881
 882         /*
 883          * Check for BARs.  We expect 0: 1MB, 2: 8MB, 4: DDR (may not
 884          * be present)
 885          */
 886         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
 887             pci_resource_len(pdev, 0) != 1 << 20) {
 888                 dev_err(&pdev->dev, "Missing DCS, aborting.");
 889                 err = -ENODEV;
 890                 goto err_disable_pdev;
 891         }
 892         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) ||
 893             pci_resource_len(pdev, 2) != 1 << 23) {
 894                 dev_err(&pdev->dev, "Missing UAR, aborting.");
 895                 err = -ENODEV;
 896                 goto err_disable_pdev;
 897         }
 898         if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM))
 899                 ddr_hidden = 1;
 900
 901         err = mthca_request_regions(pdev, ddr_hidden);
 902         if (err) {
 903                 dev_err(&pdev->dev, "Cannot obtain PCI resources, "
 904                         "aborting.\n");
 905                 goto err_disable_pdev;
 906         }
 907
 908         pci_set_master(pdev);
 909
 910         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 911         if (err) {
 912                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
 913                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 914                 if (err) {
 915                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
 916                         goto err_free_res;
 917                 }
 918         }
 919         err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
 920         if (err) {
 921                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
 922                          "consistent PCI DMA mask.\n");
 923                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
 924                 if (err) {
 925                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
 926                                 "aborting.\n");
 927                         goto err_free_res;
 928                 }
 929         }
 930
 931         mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev);
 932         if (!mdev) {
 933                 dev_err(&pdev->dev, "Device struct alloc failed, "
 934                         "aborting.\n");
 935                 err = -ENOMEM;
 936                 goto err_free_res;
 937         }
 938
 939         mdev->pdev     = pdev;
 940         mdev->hca_type = id->driver_data;
 941
 942         if (mdev->hca_type == ARBEL_NATIVE && !mthca_memfree_warned++)
 943                 mthca_warn(mdev, "Warning: native MT25208 mode support is incomplete.  "
 944                            "Your HCA may not work properly.\n");
 945
 946         if (ddr_hidden)
 947                 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN;
 948
 949         /*
 950          * Now reset the HCA before we touch the PCI capabilities or
 951          * attempt a firmware command, since a boot ROM may have left
 952          * the HCA in an undefined state.
 953          */
 954         err = mthca_reset(mdev);
 955         if (err) {
 956                 mthca_err(mdev, "Failed to reset HCA, aborting.\n");
 957                 goto err_free_dev;
 958         }
 959
 960         if (msi_x && !mthca_enable_msi_x(mdev))
 961                 mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
 962         if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) &&
 963             !pci_enable_msi(pdev))
 964                 mdev->mthca_flags |= MTHCA_FLAG_MSI;
 965
 966         sema_init(&mdev->cmd.hcr_sem, 1);
 967         sema_init(&mdev->cmd.poll_sem, 1);
 968         mdev->cmd.use_events = 0;
 969
 970         mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, MTHCA_HCR_SIZE);
 971         if (!mdev->hcr) {
 972                 mthca_err(mdev, "Couldn't map command register, "
 973                           "aborting.\n");
 974                 err = -ENOMEM;
 975                 goto err_free_dev;
 976         }
 977
 978         err = mthca_tune_pci(mdev);
 979         if (err)
 980                 goto err_iounmap;
 981
 982         err = mthca_init_hca(mdev);
 983         if (err)
 984                 goto err_iounmap;
 985
 986         err = mthca_setup_hca(mdev);
 987         if (err)
 988                 goto err_close;
 989
 990         err = mthca_register_device(mdev);
 991         if (err)
 992                 goto err_cleanup;
 993
 994         err = mthca_create_agents(mdev);
 995         if (err)
 996                 goto err_unregister;
 997
 998         pci_set_drvdata(pdev, mdev);
 999
1000         return 0;
1001
1002 err_unregister:
1003         mthca_unregister_device(mdev);
1004
1005 err_cleanup:
1006         mthca_cleanup_mcg_table(mdev);
1007         mthca_cleanup_av_table(mdev);
1008         mthca_cleanup_qp_table(mdev);
1009         mthca_cleanup_cq_table(mdev);
1010         mthca_cmd_use_polling(mdev);
1011         mthca_cleanup_eq_table(mdev);
1012
1013         mthca_pd_free(mdev, &mdev->driver_pd);
1014
1015         mthca_cleanup_mr_table(mdev);
1016         mthca_cleanup_pd_table(mdev);
1017         mthca_cleanup_uar_table(mdev);
1018
1019 err_close:
1020         mthca_close_hca(mdev);
1021
1022 err_iounmap:
1023         iounmap(mdev->hcr);
1024
1025 err_free_dev:
1026         if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1027                 pci_disable_msix(pdev);
1028         if (mdev->mthca_flags & MTHCA_FLAG_MSI)
1029                 pci_disable_msi(pdev);
1030
1031         ib_dealloc_device(&mdev->ib_dev);
1032
1033 err_free_res:
1034         mthca_release_regions(pdev, ddr_hidden);
1035
1036 err_disable_pdev:
1037         pci_disable_device(pdev);
1038         pci_set_drvdata(pdev, NULL);
1039         return err;
1040 }
1041
1042 static void __devexit mthca_remove_one(struct pci_dev *pdev)
1043 {
1044         struct mthca_dev *mdev = pci_get_drvdata(pdev);
1045         u8 status;
1046         int p;
1047
1048         if (mdev) {
1049                 mthca_free_agents(mdev);
1050                 mthca_unregister_device(mdev);
1051
1052                 for (p = 1; p <= mdev->limits.num_ports; ++p)
1053                         mthca_CLOSE_IB(mdev, p, &status);
1054
1055                 mthca_cleanup_mcg_table(mdev);
1056                 mthca_cleanup_av_table(mdev);
1057                 mthca_cleanup_qp_table(mdev);
1058                 mthca_cleanup_cq_table(mdev);
1059                 mthca_cmd_use_polling(mdev);
1060                 mthca_cleanup_eq_table(mdev);
1061
1062                 mthca_pd_free(mdev, &mdev->driver_pd);
1063
1064                 mthca_cleanup_mr_table(mdev);
1065                 mthca_cleanup_pd_table(mdev);
1066
1067                 iounmap(mdev->kar);
1068                 mthca_uar_free(mdev, &mdev->driver_uar);
1069                 mthca_cleanup_uar_table(mdev);
1070
1071                 mthca_close_hca(mdev);
1072
1073                 iounmap(mdev->hcr);
1074
1075                 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1076                         pci_disable_msix(pdev);
1077                 if (mdev->mthca_flags & MTHCA_FLAG_MSI)
1078                         pci_disable_msi(pdev);
1079
1080                 ib_dealloc_device(&mdev->ib_dev);
1081                 mthca_release_regions(pdev, mdev->mthca_flags &
1082                                       MTHCA_FLAG_DDR_HIDDEN);
1083                 pci_disable_device(pdev);
1084                 pci_set_drvdata(pdev, NULL);
1085         }
1086 }
1087
1088 static struct pci_device_id mthca_pci_table[] = {
1089         { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR),
1090           .driver_data = TAVOR },
1091         { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR),
1092           .driver_data = TAVOR },
1093         { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1094           .driver_data = ARBEL_COMPAT },
1095         { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1096           .driver_data = ARBEL_COMPAT },
1097         { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL),
1098           .driver_data = ARBEL_NATIVE },
1099         { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL),
1100           .driver_data = ARBEL_NATIVE },
1101         { 0, }
1102 };
1103
1104 MODULE_DEVICE_TABLE(pci, mthca_pci_table);
1105
1106 static struct pci_driver mthca_driver = {
1107         .name           = "ib_mthca",
1108         .id_table       = mthca_pci_table,
1109         .probe          = mthca_init_one,
1110         .remove         = __devexit_p(mthca_remove_one)
1111 };
1112
1113 static int __init mthca_init(void)
1114 {
1115         int ret;
1116
1117         ret = pci_register_driver(&mthca_driver);
1118         return ret < 0 ? ret : 0;
1119 }
1120
1121 static void __exit mthca_cleanup(void)
1122 {
1123         pci_unregister_driver(&mthca_driver);
1124 }
1125
1126 module_init(mthca_init);
1127 module_exit(mthca_cleanup);