drivers/net/ethernet/mellanox/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, 2006, 2007, 2008 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 #include <linux/slab.h>
  42 #include <linux/io-mapping.h>
  43 #include <linux/delay.h>
  44 #include <linux/netdevice.h>
  45
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/doorbell.h>
  48
  49 #include "mlx4.h"
  50 #include "fw.h"
  51 #include "icm.h"
  52
  53 MODULE_AUTHOR("Roland Dreier");
  54 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
  55 MODULE_LICENSE("Dual BSD/GPL");
  56 MODULE_VERSION(DRV_VERSION);
  57
  58 struct workqueue_struct *mlx4_wq;
  59
  60 #ifdef CONFIG_MLX4_DEBUG
  61
  62 int mlx4_debug_level = 0;
  63 module_param_named(debug_level, mlx4_debug_level, int, 0644);
  64 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
  65
  66 #endif /* CONFIG_MLX4_DEBUG */
  67
  68 #ifdef CONFIG_PCI_MSI
  69
  70 static int msi_x = 1;
  71 module_param(msi_x, int, 0444);
  72 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
  73
  74 #else /* CONFIG_PCI_MSI */
  75
  76 #define msi_x (0)
  77
  78 #endif /* CONFIG_PCI_MSI */
  79
  80 static int num_vfs;
  81 module_param(num_vfs, int, 0444);
  82 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0");
  83
  84 static int probe_vf;
  85 module_param(probe_vf, int, 0644);
  86 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)");
  87
  88 int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
  89 module_param_named(log_num_mgm_entry_size,
  90                         mlx4_log_num_mgm_entry_size, int, 0444);
  91 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
  92                                          " of qp per mcg, for example:"
  93                                          " 10 gives 248.range: 7 <="
  94                                          " log_num_mgm_entry_size <= 12."
  95                                          " To activate device managed"
  96                                          " flow steering when available, set to -1");
  97
  98 static bool enable_64b_cqe_eqe;
  99 module_param(enable_64b_cqe_eqe, bool, 0444);
 100 MODULE_PARM_DESC(enable_64b_cqe_eqe,
 101                  "Enable 64 byte CQEs/EQEs when the the FW supports this");
 102
 103 #define HCA_GLOBAL_CAP_MASK            0
 104
 105 #define PF_CONTEXT_BEHAVIOUR_MASK       MLX4_FUNC_CAP_64B_EQE_CQE
 106
 107 static char mlx4_version[] =
 108         DRV_NAME ": Mellanox ConnectX core driver v"
 109         DRV_VERSION " (" DRV_RELDATE ")\n";
 110
 111 static struct mlx4_profile default_profile = {
 112         .num_qp         = 1 << 18,
 113         .num_srq        = 1 << 16,
 114         .rdmarc_per_qp  = 1 << 4,
 115         .num_cq         = 1 << 16,
 116         .num_mcg        = 1 << 13,
 117         .num_mpt        = 1 << 19,
 118         .num_mtt        = 1 << 20, /* It is really num mtt segements */
 119 };
 120
 121 static int log_num_mac = 7;
 122 module_param_named(log_num_mac, log_num_mac, int, 0444);
 123 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
 124
 125 static int log_num_vlan;
 126 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
 127 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
 128 /* Log2 max number of VLANs per ETH port (0-7) */
 129 #define MLX4_LOG_NUM_VLANS 7
 130
 131 static bool use_prio;
 132 module_param_named(use_prio, use_prio, bool, 0444);
 133 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
 134                   "(0/1, default 0)");
 135
 136 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
 137 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
 138 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
 139
 140 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
 141 static int arr_argc = 2;
 142 module_param_array(port_type_array, int, &arr_argc, 0444);
 143 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
 144                                 "1 for IB, 2 for Ethernet");
 145
 146 struct mlx4_port_config {
 147         struct list_head list;
 148         enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
 149         struct pci_dev *pdev;
 150 };
 151
 152 int mlx4_check_port_params(struct mlx4_dev *dev,
 153                            enum mlx4_port_type *port_type)
 154 {
 155         int i;
 156
 157         for (i = 0; i < dev->caps.num_ports - 1; i++) {
 158                 if (port_type[i] != port_type[i + 1]) {
 159                         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
 160                                 mlx4_err(dev, "Only same port types supported "
 161                                          "on this HCA, aborting.\n");
 162                                 return -EINVAL;
 163                         }
 164                 }
 165         }
 166
 167         for (i = 0; i < dev->caps.num_ports; i++) {
 168                 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
 169                         mlx4_err(dev, "Requested port type for port %d is not "
 170                                       "supported on this HCA\n", i + 1);
 171                         return -EINVAL;
 172                 }
 173         }
 174         return 0;
 175 }
 176
 177 static void mlx4_set_port_mask(struct mlx4_dev *dev)
 178 {
 179         int i;
 180
 181         for (i = 1; i <= dev->caps.num_ports; ++i)
 182                 dev->caps.port_mask[i] = dev->caps.port_type[i];
 183 }
 184
 185 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 186 {
 187         int err;
 188         int i;
 189
 190         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
 191         if (err) {
 192                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
 193                 return err;
 194         }
 195
 196         if (dev_cap->min_page_sz > PAGE_SIZE) {
 197                 mlx4_err(dev, "HCA minimum page size of %d bigger than "
 198                          "kernel PAGE_SIZE of %ld, aborting.\n",
 199                          dev_cap->min_page_sz, PAGE_SIZE);
 200                 return -ENODEV;
 201         }
 202         if (dev_cap->num_ports > MLX4_MAX_PORTS) {
 203                 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
 204                          "aborting.\n",
 205                          dev_cap->num_ports, MLX4_MAX_PORTS);
 206                 return -ENODEV;
 207         }
 208
 209         if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
 210                 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
 211                          "PCI resource 2 size of 0x%llx, aborting.\n",
 212                          dev_cap->uar_size,
 213                          (unsigned long long) pci_resource_len(dev->pdev, 2));
 214                 return -ENODEV;
 215         }
 216
 217         dev->caps.num_ports          = dev_cap->num_ports;
 218         dev->phys_caps.num_phys_eqs  = MLX4_MAX_EQ_NUM;
 219         for (i = 1; i <= dev->caps.num_ports; ++i) {
 220                 dev->caps.vl_cap[i]         = dev_cap->max_vl[i];
 221                 dev->caps.ib_mtu_cap[i]     = dev_cap->ib_mtu[i];
 222                 dev->phys_caps.gid_phys_table_len[i]  = dev_cap->max_gids[i];
 223                 dev->phys_caps.pkey_phys_table_len[i] = dev_cap->max_pkeys[i];
 224                 /* set gid and pkey table operating lengths by default
 225                  * to non-sriov values */
 226                 dev->caps.gid_table_len[i]  = dev_cap->max_gids[i];
 227                 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
 228                 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
 229                 dev->caps.eth_mtu_cap[i]    = dev_cap->eth_mtu[i];
 230                 dev->caps.def_mac[i]        = dev_cap->def_mac[i];
 231                 dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
 232                 dev->caps.suggested_type[i] = dev_cap->suggested_type[i];
 233                 dev->caps.default_sense[i] = dev_cap->default_sense[i];
 234                 dev->caps.trans_type[i]     = dev_cap->trans_type[i];
 235                 dev->caps.vendor_oui[i]     = dev_cap->vendor_oui[i];
 236                 dev->caps.wavelength[i]     = dev_cap->wavelength[i];
 237                 dev->caps.trans_code[i]     = dev_cap->trans_code[i];
 238         }
 239
 240         dev->caps.uar_page_size      = PAGE_SIZE;
 241         dev->caps.num_uars           = dev_cap->uar_size / PAGE_SIZE;
 242         dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
 243         dev->caps.bf_reg_size        = dev_cap->bf_reg_size;
 244         dev->caps.bf_regs_per_page   = dev_cap->bf_regs_per_page;
 245         dev->caps.max_sq_sg          = dev_cap->max_sq_sg;
 246         dev->caps.max_rq_sg          = dev_cap->max_rq_sg;
 247         dev->caps.max_wqes           = dev_cap->max_qp_sz;
 248         dev->caps.max_qp_init_rdma   = dev_cap->max_requester_per_qp;
 249         dev->caps.max_srq_wqes       = dev_cap->max_srq_sz;
 250         dev->caps.max_srq_sge        = dev_cap->max_rq_sg - 1;
 251         dev->caps.reserved_srqs      = dev_cap->reserved_srqs;
 252         dev->caps.max_sq_desc_sz     = dev_cap->max_sq_desc_sz;
 253         dev->caps.max_rq_desc_sz     = dev_cap->max_rq_desc_sz;
 254         /*
 255          * Subtract 1 from the limit because we need to allocate a
 256          * spare CQE so the HCA HW can tell the difference between an
 257          * empty CQ and a full CQ.
 258          */
 259         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
 260         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
 261         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
 262         dev->caps.reserved_mtts      = dev_cap->reserved_mtts;
 263         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
 264
 265         /* The first 128 UARs are used for EQ doorbells */
 266         dev->caps.reserved_uars      = max_t(int, 128, dev_cap->reserved_uars);
 267         dev->caps.reserved_pds       = dev_cap->reserved_pds;
 268         dev->caps.reserved_xrcds     = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
 269                                         dev_cap->reserved_xrcds : 0;
 270         dev->caps.max_xrcds          = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
 271                                         dev_cap->max_xrcds : 0;
 272         dev->caps.mtt_entry_sz       = dev_cap->mtt_entry_sz;
 273
 274         dev->caps.max_msg_sz         = dev_cap->max_msg_sz;
 275         dev->caps.page_size_cap      = ~(u32) (dev_cap->min_page_sz - 1);
 276         dev->caps.flags              = dev_cap->flags;
 277         dev->caps.flags2             = dev_cap->flags2;
 278         dev->caps.bmme_flags         = dev_cap->bmme_flags;
 279         dev->caps.reserved_lkey      = dev_cap->reserved_lkey;
 280         dev->caps.stat_rate_support  = dev_cap->stat_rate_support;
 281         dev->caps.max_gso_sz         = dev_cap->max_gso_sz;
 282         dev->caps.max_rss_tbl_sz     = dev_cap->max_rss_tbl_sz;
 283
 284         /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
 285         if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
 286                 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
 287         /* Don't do sense port on multifunction devices (for now at least) */
 288         if (mlx4_is_mfunc(dev))
 289                 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
 290
 291         dev->caps.log_num_macs  = log_num_mac;
 292         dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
 293         dev->caps.log_num_prios = use_prio ? 3 : 0;
 294
 295         for (i = 1; i <= dev->caps.num_ports; ++i) {
 296                 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
 297                 if (dev->caps.supported_type[i]) {
 298                         /* if only ETH is supported - assign ETH */
 299                         if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
 300                                 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
 301                         /* if only IB is supported, assign IB */
 302                         else if (dev->caps.supported_type[i] ==
 303                                  MLX4_PORT_TYPE_IB)
 304                                 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
 305                         else {
 306                                 /* if IB and ETH are supported, we set the port
 307                                  * type according to user selection of port type;
 308                                  * if user selected none, take the FW hint */
 309                                 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
 310                                         dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
 311                                                 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
 312                                 else
 313                                         dev->caps.port_type[i] = port_type_array[i - 1];
 314                         }
 315                 }
 316                 /*
 317                  * Link sensing is allowed on the port if 3 conditions are true:
 318                  * 1. Both protocols are supported on the port.
 319                  * 2. Different types are supported on the port
 320                  * 3. FW declared that it supports link sensing
 321                  */
 322                 mlx4_priv(dev)->sense.sense_allowed[i] =
 323                         ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
 324                          (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
 325                          (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
 326
 327                 /*
 328                  * If "default_sense" bit is set, we move the port to "AUTO" mode
 329                  * and perform sense_port FW command to try and set the correct
 330                  * port type from beginning
 331                  */
 332                 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
 333                         enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
 334                         dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
 335                         mlx4_SENSE_PORT(dev, i, &sensed_port);
 336                         if (sensed_port != MLX4_PORT_TYPE_NONE)
 337                                 dev->caps.port_type[i] = sensed_port;
 338                 } else {
 339                         dev->caps.possible_type[i] = dev->caps.port_type[i];
 340                 }
 341
 342                 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
 343                         dev->caps.log_num_macs = dev_cap->log_max_macs[i];
 344                         mlx4_warn(dev, "Requested number of MACs is too much "
 345                                   "for port %d, reducing to %d.\n",
 346                                   i, 1 << dev->caps.log_num_macs);
 347                 }
 348                 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
 349                         dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
 350                         mlx4_warn(dev, "Requested number of VLANs is too much "
 351                                   "for port %d, reducing to %d.\n",
 352                                   i, 1 << dev->caps.log_num_vlans);
 353                 }
 354         }
 355
 356         dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
 357
 358         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
 359         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
 360                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
 361                 (1 << dev->caps.log_num_macs) *
 362                 (1 << dev->caps.log_num_vlans) *
 363                 (1 << dev->caps.log_num_prios) *
 364                 dev->caps.num_ports;
 365         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
 366
 367         dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
 368                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
 369                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
 370                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
 371
 372         dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
 373
 374         if (!enable_64b_cqe_eqe) {
 375                 if (dev_cap->flags &
 376                     (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
 377                         mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
 378                         dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
 379                         dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
 380                 }
 381         }
 382
 383         if ((dev->caps.flags &
 384             (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
 385             mlx4_is_master(dev))
 386                 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
 387
 388         return 0;
 389 }
 390 /*The function checks if there are live vf, return the num of them*/
 391 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
 392 {
 393         struct mlx4_priv *priv = mlx4_priv(dev);
 394         struct mlx4_slave_state *s_state;
 395         int i;
 396         int ret = 0;
 397
 398         for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
 399                 s_state = &priv->mfunc.master.slave_state[i];
 400                 if (s_state->active && s_state->last_cmd !=
 401                     MLX4_COMM_CMD_RESET) {
 402                         mlx4_warn(dev, "%s: slave: %d is still active\n",
 403                                   __func__, i);
 404                         ret++;
 405                 }
 406         }
 407         return ret;
 408 }
 409
 410 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
 411 {
 412         u32 qk = MLX4_RESERVED_QKEY_BASE;
 413
 414         if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
 415             qpn < dev->phys_caps.base_proxy_sqpn)
 416                 return -EINVAL;
 417
 418         if (qpn >= dev->phys_caps.base_tunnel_sqpn)
 419                 /* tunnel qp */
 420                 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
 421         else
 422                 qk += qpn - dev->phys_caps.base_proxy_sqpn;
 423         *qkey = qk;
 424         return 0;
 425 }
 426 EXPORT_SYMBOL(mlx4_get_parav_qkey);
 427
 428 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
 429 {
 430         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 431
 432         if (!mlx4_is_master(dev))
 433                 return;
 434
 435         priv->virt2phys_pkey[slave][port - 1][i] = val;
 436 }
 437 EXPORT_SYMBOL(mlx4_sync_pkey_table);
 438
 439 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
 440 {
 441         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 442
 443         if (!mlx4_is_master(dev))
 444                 return;
 445
 446         priv->slave_node_guids[slave] = guid;
 447 }
 448 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
 449
 450 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
 451 {
 452         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 453
 454         if (!mlx4_is_master(dev))
 455                 return 0;
 456
 457         return priv->slave_node_guids[slave];
 458 }
 459 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
 460
 461 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
 462 {
 463         struct mlx4_priv *priv = mlx4_priv(dev);
 464         struct mlx4_slave_state *s_slave;
 465
 466         if (!mlx4_is_master(dev))
 467                 return 0;
 468
 469         s_slave = &priv->mfunc.master.slave_state[slave];
 470         return !!s_slave->active;
 471 }
 472 EXPORT_SYMBOL(mlx4_is_slave_active);
 473
 474 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
 475                                        struct mlx4_dev_cap *dev_cap,
 476                                        struct mlx4_init_hca_param *hca_param)
 477 {
 478         dev->caps.steering_mode = hca_param->steering_mode;
 479         if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
 480                 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
 481                 dev->caps.fs_log_max_ucast_qp_range_size =
 482                         dev_cap->fs_log_max_ucast_qp_range_size;
 483         } else
 484                 dev->caps.num_qp_per_mgm =
 485                         4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
 486
 487         mlx4_dbg(dev, "Steering mode is: %s\n",
 488                  mlx4_steering_mode_str(dev->caps.steering_mode));
 489 }
 490
 491 static int mlx4_slave_cap(struct mlx4_dev *dev)
 492 {
 493         int                        err;
 494         u32                        page_size;
 495         struct mlx4_dev_cap        dev_cap;
 496         struct mlx4_func_cap       func_cap;
 497         struct mlx4_init_hca_param hca_param;
 498         int                        i;
 499
 500         memset(&hca_param, 0, sizeof(hca_param));
 501         err = mlx4_QUERY_HCA(dev, &hca_param);
 502         if (err) {
 503                 mlx4_err(dev, "QUERY_HCA command failed, aborting.\n");
 504                 return err;
 505         }
 506
 507         /*fail if the hca has an unknown capability */
 508         if ((hca_param.global_caps | HCA_GLOBAL_CAP_MASK) !=
 509             HCA_GLOBAL_CAP_MASK) {
 510                 mlx4_err(dev, "Unknown hca global capabilities\n");
 511                 return -ENOSYS;
 512         }
 513
 514         mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
 515
 516         dev->caps.hca_core_clock = hca_param.hca_core_clock;
 517
 518         memset(&dev_cap, 0, sizeof(dev_cap));
 519         dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
 520         err = mlx4_dev_cap(dev, &dev_cap);
 521         if (err) {
 522                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
 523                 return err;
 524         }
 525
 526         err = mlx4_QUERY_FW(dev);
 527         if (err)
 528                 mlx4_err(dev, "QUERY_FW command failed: could not get FW version.\n");
 529
 530         page_size = ~dev->caps.page_size_cap + 1;
 531         mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
 532         if (page_size > PAGE_SIZE) {
 533                 mlx4_err(dev, "HCA minimum page size of %d bigger than "
 534                          "kernel PAGE_SIZE of %ld, aborting.\n",
 535                          page_size, PAGE_SIZE);
 536                 return -ENODEV;
 537         }
 538
 539         /* slave gets uar page size from QUERY_HCA fw command */
 540         dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
 541
 542         /* TODO: relax this assumption */
 543         if (dev->caps.uar_page_size != PAGE_SIZE) {
 544                 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
 545                          dev->caps.uar_page_size, PAGE_SIZE);
 546                 return -ENODEV;
 547         }
 548
 549         memset(&func_cap, 0, sizeof(func_cap));
 550         err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
 551         if (err) {
 552                 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d).\n",
 553                           err);
 554                 return err;
 555         }
 556
 557         if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
 558             PF_CONTEXT_BEHAVIOUR_MASK) {
 559                 mlx4_err(dev, "Unknown pf context behaviour\n");
 560                 return -ENOSYS;
 561         }
 562
 563         dev->caps.num_ports             = func_cap.num_ports;
 564         dev->caps.num_qps               = func_cap.qp_quota;
 565         dev->caps.num_srqs              = func_cap.srq_quota;
 566         dev->caps.num_cqs               = func_cap.cq_quota;
 567         dev->caps.num_eqs               = func_cap.max_eq;
 568         dev->caps.reserved_eqs          = func_cap.reserved_eq;
 569         dev->caps.num_mpts              = func_cap.mpt_quota;
 570         dev->caps.num_mtts              = func_cap.mtt_quota;
 571         dev->caps.num_pds               = MLX4_NUM_PDS;
 572         dev->caps.num_mgms              = 0;
 573         dev->caps.num_amgms             = 0;
 574
 575         if (dev->caps.num_ports > MLX4_MAX_PORTS) {
 576                 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
 577                          "aborting.\n", dev->caps.num_ports, MLX4_MAX_PORTS);
 578                 return -ENODEV;
 579         }
 580
 581         dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 582         dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 583         dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 584         dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 585
 586         if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
 587             !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) {
 588                 err = -ENOMEM;
 589                 goto err_mem;
 590         }
 591
 592         for (i = 1; i <= dev->caps.num_ports; ++i) {
 593                 err = mlx4_QUERY_FUNC_CAP(dev, (u32) i, &func_cap);
 594                 if (err) {
 595                         mlx4_err(dev, "QUERY_FUNC_CAP port command failed for"
 596                                  " port %d, aborting (%d).\n", i, err);
 597                         goto err_mem;
 598                 }
 599                 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
 600                 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
 601                 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
 602                 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
 603                 dev->caps.port_mask[i] = dev->caps.port_type[i];
 604                 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
 605                                                     &dev->caps.gid_table_len[i],
 606                                                     &dev->caps.pkey_table_len[i]))
 607                         goto err_mem;
 608         }
 609
 610         if (dev->caps.uar_page_size * (dev->caps.num_uars -
 611                                        dev->caps.reserved_uars) >
 612                                        pci_resource_len(dev->pdev, 2)) {
 613                 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than "
 614                          "PCI resource 2 size of 0x%llx, aborting.\n",
 615                          dev->caps.uar_page_size * dev->caps.num_uars,
 616                          (unsigned long long) pci_resource_len(dev->pdev, 2));
 617                 goto err_mem;
 618         }
 619
 620         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
 621                 dev->caps.eqe_size   = 64;
 622                 dev->caps.eqe_factor = 1;
 623         } else {
 624                 dev->caps.eqe_size   = 32;
 625                 dev->caps.eqe_factor = 0;
 626         }
 627
 628         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
 629                 dev->caps.cqe_size   = 64;
 630                 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_64B_CQE;
 631         } else {
 632                 dev->caps.cqe_size   = 32;
 633         }
 634
 635         dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
 636         mlx4_warn(dev, "Timestamping is not supported in slave mode.\n");
 637
 638         slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
 639
 640         return 0;
 641
 642 err_mem:
 643         kfree(dev->caps.qp0_tunnel);
 644         kfree(dev->caps.qp0_proxy);
 645         kfree(dev->caps.qp1_tunnel);
 646         kfree(dev->caps.qp1_proxy);
 647         dev->caps.qp0_tunnel = dev->caps.qp0_proxy =
 648                 dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL;
 649
 650         return err;
 651 }
 652
 653 /*
 654  * Change the port configuration of the device.
 655  * Every user of this function must hold the port mutex.
 656  */
 657 int mlx4_change_port_types(struct mlx4_dev *dev,
 658                            enum mlx4_port_type *port_types)
 659 {
 660         int err = 0;
 661         int change = 0;
 662         int port;
 663
 664         for (port = 0; port <  dev->caps.num_ports; port++) {
 665                 /* Change the port type only if the new type is different
 666                  * from the current, and not set to Auto */
 667                 if (port_types[port] != dev->caps.port_type[port + 1])
 668                         change = 1;
 669         }
 670         if (change) {
 671                 mlx4_unregister_device(dev);
 672                 for (port = 1; port <= dev->caps.num_ports; port++) {
 673                         mlx4_CLOSE_PORT(dev, port);
 674                         dev->caps.port_type[port] = port_types[port - 1];
 675                         err = mlx4_SET_PORT(dev, port, -1);
 676                         if (err) {
 677                                 mlx4_err(dev, "Failed to set port %d, "
 678                                               "aborting\n", port);
 679                                 goto out;
 680                         }
 681                 }
 682                 mlx4_set_port_mask(dev);
 683                 err = mlx4_register_device(dev);
 684         }
 685
 686 out:
 687         return err;
 688 }
 689
 690 static ssize_t show_port_type(struct device *dev,
 691                               struct device_attribute *attr,
 692                               char *buf)
 693 {
 694         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
 695                                                    port_attr);
 696         struct mlx4_dev *mdev = info->dev;
 697         char type[8];
 698
 699         sprintf(type, "%s",
 700                 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
 701                 "ib" : "eth");
 702         if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
 703                 sprintf(buf, "auto (%s)\n", type);
 704         else
 705                 sprintf(buf, "%s\n", type);
 706
 707         return strlen(buf);
 708 }
 709
 710 static ssize_t set_port_type(struct device *dev,
 711                              struct device_attribute *attr,
 712                              const char *buf, size_t count)
 713 {
 714         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
 715                                                    port_attr);
 716         struct mlx4_dev *mdev = info->dev;
 717         struct mlx4_priv *priv = mlx4_priv(mdev);
 718         enum mlx4_port_type types[MLX4_MAX_PORTS];
 719         enum mlx4_port_type new_types[MLX4_MAX_PORTS];
 720         int i;
 721         int err = 0;
 722
 723         if (!strcmp(buf, "ib\n"))
 724                 info->tmp_type = MLX4_PORT_TYPE_IB;
 725         else if (!strcmp(buf, "eth\n"))
 726                 info->tmp_type = MLX4_PORT_TYPE_ETH;
 727         else if (!strcmp(buf, "auto\n"))
 728                 info->tmp_type = MLX4_PORT_TYPE_AUTO;
 729         else {
 730                 mlx4_err(mdev, "%s is not supported port type\n", buf);
 731                 return -EINVAL;
 732         }
 733
 734         mlx4_stop_sense(mdev);
 735         mutex_lock(&priv->port_mutex);
 736         /* Possible type is always the one that was delivered */
 737         mdev->caps.possible_type[info->port] = info->tmp_type;
 738
 739         for (i = 0; i < mdev->caps.num_ports; i++) {
 740                 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
 741                                         mdev->caps.possible_type[i+1];
 742                 if (types[i] == MLX4_PORT_TYPE_AUTO)
 743                         types[i] = mdev->caps.port_type[i+1];
 744         }
 745
 746         if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
 747             !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
 748                 for (i = 1; i <= mdev->caps.num_ports; i++) {
 749                         if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
 750                                 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
 751                                 err = -EINVAL;
 752                         }
 753                 }
 754         }
 755         if (err) {
 756                 mlx4_err(mdev, "Auto sensing is not supported on this HCA. "
 757                                "Set only 'eth' or 'ib' for both ports "
 758                                "(should be the same)\n");
 759                 goto out;
 760         }
 761
 762         mlx4_do_sense_ports(mdev, new_types, types);
 763
 764         err = mlx4_check_port_params(mdev, new_types);
 765         if (err)
 766                 goto out;
 767
 768         /* We are about to apply the changes after the configuration
 769          * was verified, no need to remember the temporary types
 770          * any more */
 771         for (i = 0; i < mdev->caps.num_ports; i++)
 772                 priv->port[i + 1].tmp_type = 0;
 773
 774         err = mlx4_change_port_types(mdev, new_types);
 775
 776 out:
 777         mlx4_start_sense(mdev);
 778         mutex_unlock(&priv->port_mutex);
 779         return err ? err : count;
 780 }
 781
 782 enum ibta_mtu {
 783         IB_MTU_256  = 1,
 784         IB_MTU_512  = 2,
 785         IB_MTU_1024 = 3,
 786         IB_MTU_2048 = 4,
 787         IB_MTU_4096 = 5
 788 };
 789
 790 static inline int int_to_ibta_mtu(int mtu)
 791 {
 792         switch (mtu) {
 793         case 256:  return IB_MTU_256;
 794         case 512:  return IB_MTU_512;
 795         case 1024: return IB_MTU_1024;
 796         case 2048: return IB_MTU_2048;
 797         case 4096: return IB_MTU_4096;
 798         default: return -1;
 799         }
 800 }
 801
 802 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
 803 {
 804         switch (mtu) {
 805         case IB_MTU_256:  return  256;
 806         case IB_MTU_512:  return  512;
 807         case IB_MTU_1024: return 1024;
 808         case IB_MTU_2048: return 2048;
 809         case IB_MTU_4096: return 4096;
 810         default: return -1;
 811         }
 812 }
 813
 814 static ssize_t show_port_ib_mtu(struct device *dev,
 815                              struct device_attribute *attr,
 816                              char *buf)
 817 {
 818         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
 819                                                    port_mtu_attr);
 820         struct mlx4_dev *mdev = info->dev;
 821
 822         if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
 823                 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
 824
 825         sprintf(buf, "%d\n",
 826                         ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
 827         return strlen(buf);
 828 }
 829
 830 static ssize_t set_port_ib_mtu(struct device *dev,
 831                              struct device_attribute *attr,
 832                              const char *buf, size_t count)
 833 {
 834         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
 835                                                    port_mtu_attr);
 836         struct mlx4_dev *mdev = info->dev;
 837         struct mlx4_priv *priv = mlx4_priv(mdev);
 838         int err, port, mtu, ibta_mtu = -1;
 839
 840         if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
 841                 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
 842                 return -EINVAL;
 843         }
 844
 845         err = sscanf(buf, "%d", &mtu);
 846         if (err > 0)
 847                 ibta_mtu = int_to_ibta_mtu(mtu);
 848
 849         if (err <= 0 || ibta_mtu < 0) {
 850                 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
 851                 return -EINVAL;
 852         }
 853
 854         mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
 855
 856         mlx4_stop_sense(mdev);
 857         mutex_lock(&priv->port_mutex);
 858         mlx4_unregister_device(mdev);
 859         for (port = 1; port <= mdev->caps.num_ports; port++) {
 860                 mlx4_CLOSE_PORT(mdev, port);
 861                 err = mlx4_SET_PORT(mdev, port, -1);
 862                 if (err) {
 863                         mlx4_err(mdev, "Failed to set port %d, "
 864                                       "aborting\n", port);
 865                         goto err_set_port;
 866                 }
 867         }
 868         err = mlx4_register_device(mdev);
 869 err_set_port:
 870         mutex_unlock(&priv->port_mutex);
 871         mlx4_start_sense(mdev);
 872         return err ? err : count;
 873 }
 874
 875 static int mlx4_load_fw(struct mlx4_dev *dev)
 876 {
 877         struct mlx4_priv *priv = mlx4_priv(dev);
 878         int err;
 879
 880         priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
 881                                          GFP_HIGHUSER | __GFP_NOWARN, 0);
 882         if (!priv->fw.fw_icm) {
 883                 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
 884                 return -ENOMEM;
 885         }
 886
 887         err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
 888         if (err) {
 889                 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
 890                 goto err_free;
 891         }
 892
 893         err = mlx4_RUN_FW(dev);
 894         if (err) {
 895                 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
 896                 goto err_unmap_fa;
 897         }
 898
 899         return 0;
 900
 901 err_unmap_fa:
 902         mlx4_UNMAP_FA(dev);
 903
 904 err_free:
 905         mlx4_free_icm(dev, priv->fw.fw_icm, 0);
 906         return err;
 907 }
 908
 909 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
 910                                 int cmpt_entry_sz)
 911 {
 912         struct mlx4_priv *priv = mlx4_priv(dev);
 913         int err;
 914         int num_eqs;
 915
 916         err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
 917                                   cmpt_base +
 918                                   ((u64) (MLX4_CMPT_TYPE_QP *
 919                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 920                                   cmpt_entry_sz, dev->caps.num_qps,
 921                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
 922                                   0, 0);
 923         if (err)
 924                 goto err;
 925
 926         err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
 927                                   cmpt_base +
 928                                   ((u64) (MLX4_CMPT_TYPE_SRQ *
 929                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 930                                   cmpt_entry_sz, dev->caps.num_srqs,
 931                                   dev->caps.reserved_srqs, 0, 0);
 932         if (err)
 933                 goto err_qp;
 934
 935         err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
 936                                   cmpt_base +
 937                                   ((u64) (MLX4_CMPT_TYPE_CQ *
 938                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 939                                   cmpt_entry_sz, dev->caps.num_cqs,
 940                                   dev->caps.reserved_cqs, 0, 0);
 941         if (err)
 942                 goto err_srq;
 943
 944         num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
 945                   dev->caps.num_eqs;
 946         err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
 947                                   cmpt_base +
 948                                   ((u64) (MLX4_CMPT_TYPE_EQ *
 949                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
 950                                   cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
 951         if (err)
 952                 goto err_cq;
 953
 954         return 0;
 955
 956 err_cq:
 957         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
 958
 959 err_srq:
 960         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
 961
 962 err_qp:
 963         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
 964
 965 err:
 966         return err;
 967 }
 968
 969 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
 970                          struct mlx4_init_hca_param *init_hca, u64 icm_size)
 971 {
 972         struct mlx4_priv *priv = mlx4_priv(dev);
 973         u64 aux_pages;
 974         int num_eqs;
 975         int err;
 976
 977         err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
 978         if (err) {
 979                 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
 980                 return err;
 981         }
 982
 983         mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
 984                  (unsigned long long) icm_size >> 10,
 985                  (unsigned long long) aux_pages << 2);
 986
 987         priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
 988                                           GFP_HIGHUSER | __GFP_NOWARN, 0);
 989         if (!priv->fw.aux_icm) {
 990                 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
 991                 return -ENOMEM;
 992         }
 993
 994         err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
 995         if (err) {
 996                 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
 997                 goto err_free_aux;
 998         }
 999
1000         err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1001         if (err) {
1002                 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
1003                 goto err_unmap_aux;
1004         }
1005
1006
1007         num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1008                    dev->caps.num_eqs;
1009         err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1010                                   init_hca->eqc_base, dev_cap->eqc_entry_sz,
1011                                   num_eqs, num_eqs, 0, 0);
1012         if (err) {
1013                 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
1014                 goto err_unmap_cmpt;
1015         }
1016
1017         /*
1018          * Reserved MTT entries must be aligned up to a cacheline
1019          * boundary, since the FW will write to them, while the driver
1020          * writes to all other MTT entries. (The variable
1021          * dev->caps.mtt_entry_sz below is really the MTT segment
1022          * size, not the raw entry size)
1023          */
1024         dev->caps.reserved_mtts =
1025                 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1026                       dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1027
1028         err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1029                                   init_hca->mtt_base,
1030                                   dev->caps.mtt_entry_sz,
1031                                   dev->caps.num_mtts,
1032                                   dev->caps.reserved_mtts, 1, 0);
1033         if (err) {
1034                 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
1035                 goto err_unmap_eq;
1036         }
1037
1038         err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1039                                   init_hca->dmpt_base,
1040                                   dev_cap->dmpt_entry_sz,
1041                                   dev->caps.num_mpts,
1042                                   dev->caps.reserved_mrws, 1, 1);
1043         if (err) {
1044                 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
1045                 goto err_unmap_mtt;
1046         }
1047
1048         err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1049                                   init_hca->qpc_base,
1050                                   dev_cap->qpc_entry_sz,
1051                                   dev->caps.num_qps,
1052                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1053                                   0, 0);
1054         if (err) {
1055                 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
1056                 goto err_unmap_dmpt;
1057         }
1058
1059         err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1060                                   init_hca->auxc_base,
1061                                   dev_cap->aux_entry_sz,
1062                                   dev->caps.num_qps,
1063                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1064                                   0, 0);
1065         if (err) {
1066                 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
1067                 goto err_unmap_qp;
1068         }
1069
1070         err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1071                                   init_hca->altc_base,
1072                                   dev_cap->altc_entry_sz,
1073                                   dev->caps.num_qps,
1074                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1075                                   0, 0);
1076         if (err) {
1077                 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
1078                 goto err_unmap_auxc;
1079         }
1080
1081         err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1082                                   init_hca->rdmarc_base,
1083                                   dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1084                                   dev->caps.num_qps,
1085                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1086                                   0, 0);
1087         if (err) {
1088                 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1089                 goto err_unmap_altc;
1090         }
1091
1092         err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1093                                   init_hca->cqc_base,
1094                                   dev_cap->cqc_entry_sz,
1095                                   dev->caps.num_cqs,
1096                                   dev->caps.reserved_cqs, 0, 0);
1097         if (err) {
1098                 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
1099                 goto err_unmap_rdmarc;
1100         }
1101
1102         err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1103                                   init_hca->srqc_base,
1104                                   dev_cap->srq_entry_sz,
1105                                   dev->caps.num_srqs,
1106                                   dev->caps.reserved_srqs, 0, 0);
1107         if (err) {
1108                 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
1109                 goto err_unmap_cq;
1110         }
1111
1112         /*
1113          * For flow steering device managed mode it is required to use
1114          * mlx4_init_icm_table. For B0 steering mode it's not strictly
1115          * required, but for simplicity just map the whole multicast
1116          * group table now.  The table isn't very big and it's a lot
1117          * easier than trying to track ref counts.
1118          */
1119         err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1120                                   init_hca->mc_base,
1121                                   mlx4_get_mgm_entry_size(dev),
1122                                   dev->caps.num_mgms + dev->caps.num_amgms,
1123                                   dev->caps.num_mgms + dev->caps.num_amgms,
1124                                   0, 0);
1125         if (err) {
1126                 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
1127                 goto err_unmap_srq;
1128         }
1129
1130         return 0;
1131
1132 err_unmap_srq:
1133         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1134
1135 err_unmap_cq:
1136         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1137
1138 err_unmap_rdmarc:
1139         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1140
1141 err_unmap_altc:
1142         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1143
1144 err_unmap_auxc:
1145         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1146
1147 err_unmap_qp:
1148         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1149
1150 err_unmap_dmpt:
1151         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1152
1153 err_unmap_mtt:
1154         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1155
1156 err_unmap_eq:
1157         mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1158
1159 err_unmap_cmpt:
1160         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1161         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1162         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1163         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1164
1165 err_unmap_aux:
1166         mlx4_UNMAP_ICM_AUX(dev);
1167
1168 err_free_aux:
1169         mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1170
1171         return err;
1172 }
1173
1174 static void mlx4_free_icms(struct mlx4_dev *dev)
1175 {
1176         struct mlx4_priv *priv = mlx4_priv(dev);
1177
1178         mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1179         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1180         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1181         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1182         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1183         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1184         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1185         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1186         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1187         mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1188         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1189         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1190         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1191         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1192
1193         mlx4_UNMAP_ICM_AUX(dev);
1194         mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1195 }
1196
1197 static void mlx4_slave_exit(struct mlx4_dev *dev)
1198 {
1199         struct mlx4_priv *priv = mlx4_priv(dev);
1200
1201         mutex_lock(&priv->cmd.slave_cmd_mutex);
1202         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1203                 mlx4_warn(dev, "Failed to close slave function.\n");
1204         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1205 }
1206
1207 static int map_bf_area(struct mlx4_dev *dev)
1208 {
1209         struct mlx4_priv *priv = mlx4_priv(dev);
1210         resource_size_t bf_start;
1211         resource_size_t bf_len;
1212         int err = 0;
1213
1214         if (!dev->caps.bf_reg_size)
1215                 return -ENXIO;
1216
1217         bf_start = pci_resource_start(dev->pdev, 2) +
1218                         (dev->caps.num_uars << PAGE_SHIFT);
1219         bf_len = pci_resource_len(dev->pdev, 2) -
1220                         (dev->caps.num_uars << PAGE_SHIFT);
1221         priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1222         if (!priv->bf_mapping)
1223                 err = -ENOMEM;
1224
1225         return err;
1226 }
1227
1228 static void unmap_bf_area(struct mlx4_dev *dev)
1229 {
1230         if (mlx4_priv(dev)->bf_mapping)
1231                 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1232 }
1233
1234 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1235 {
1236         u32 clockhi, clocklo, clockhi1;
1237         cycle_t cycles;
1238         int i;
1239         struct mlx4_priv *priv = mlx4_priv(dev);
1240
1241         for (i = 0; i < 10; i++) {
1242                 clockhi = swab32(readl(priv->clock_mapping));
1243                 clocklo = swab32(readl(priv->clock_mapping + 4));
1244                 clockhi1 = swab32(readl(priv->clock_mapping));
1245                 if (clockhi == clockhi1)
1246                         break;
1247         }
1248
1249         cycles = (u64) clockhi << 32 | (u64) clocklo;
1250
1251         return cycles;
1252 }
1253 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1254
1255
1256 static int map_internal_clock(struct mlx4_dev *dev)
1257 {
1258         struct mlx4_priv *priv = mlx4_priv(dev);
1259
1260         priv->clock_mapping =
1261                 ioremap(pci_resource_start(dev->pdev, priv->fw.clock_bar) +
1262                         priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1263
1264         if (!priv->clock_mapping)
1265                 return -ENOMEM;
1266
1267         return 0;
1268 }
1269
1270 static void unmap_internal_clock(struct mlx4_dev *dev)
1271 {
1272         struct mlx4_priv *priv = mlx4_priv(dev);
1273
1274         if (priv->clock_mapping)
1275                 iounmap(priv->clock_mapping);
1276 }
1277
1278 static void mlx4_close_hca(struct mlx4_dev *dev)
1279 {
1280         unmap_internal_clock(dev);
1281         unmap_bf_area(dev);
1282         if (mlx4_is_slave(dev))
1283                 mlx4_slave_exit(dev);
1284         else {
1285                 mlx4_CLOSE_HCA(dev, 0);
1286                 mlx4_free_icms(dev);
1287                 mlx4_UNMAP_FA(dev);
1288                 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1289         }
1290 }
1291
1292 static int mlx4_init_slave(struct mlx4_dev *dev)
1293 {
1294         struct mlx4_priv *priv = mlx4_priv(dev);
1295         u64 dma = (u64) priv->mfunc.vhcr_dma;
1296         int ret_from_reset = 0;
1297         u32 slave_read;
1298         u32 cmd_channel_ver;
1299
1300         mutex_lock(&priv->cmd.slave_cmd_mutex);
1301         priv->cmd.max_cmds = 1;
1302         mlx4_warn(dev, "Sending reset\n");
1303         ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1304                                        MLX4_COMM_TIME);
1305         /* if we are in the middle of flr the slave will try
1306          * NUM_OF_RESET_RETRIES times before leaving.*/
1307         if (ret_from_reset) {
1308                 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1309                         mlx4_warn(dev, "slave is currently in the "
1310                                   "middle of FLR. Deferring probe.\n");
1311                         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1312                         return -EPROBE_DEFER;
1313                 } else
1314                         goto err;
1315         }
1316
1317         /* check the driver version - the slave I/F revision
1318          * must match the master's */
1319         slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1320         cmd_channel_ver = mlx4_comm_get_version();
1321
1322         if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1323                 MLX4_COMM_GET_IF_REV(slave_read)) {
1324                 mlx4_err(dev, "slave driver version is not supported"
1325                          " by the master\n");
1326                 goto err;
1327         }
1328
1329         mlx4_warn(dev, "Sending vhcr0\n");
1330         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1331                                                     MLX4_COMM_TIME))
1332                 goto err;
1333         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1334                                                     MLX4_COMM_TIME))
1335                 goto err;
1336         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1337                                                     MLX4_COMM_TIME))
1338                 goto err;
1339         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1340                 goto err;
1341
1342         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1343         return 0;
1344
1345 err:
1346         mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1347         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1348         return -EIO;
1349 }
1350
1351 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1352 {
1353         int i;
1354
1355         for (i = 1; i <= dev->caps.num_ports; i++) {
1356                 dev->caps.gid_table_len[i] = 1;
1357                 dev->caps.pkey_table_len[i] =
1358                         dev->phys_caps.pkey_phys_table_len[i] - 1;
1359         }
1360 }
1361
1362 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1363 {
1364         int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1365
1366         for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1367               i++) {
1368                 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1369                         break;
1370         }
1371
1372         return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1373 }
1374
1375 static void choose_steering_mode(struct mlx4_dev *dev,
1376                                  struct mlx4_dev_cap *dev_cap)
1377 {
1378         if (mlx4_log_num_mgm_entry_size == -1 &&
1379             dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1380             (!mlx4_is_mfunc(dev) ||
1381              (dev_cap->fs_max_num_qp_per_entry >= (num_vfs + 1))) &&
1382             choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1383                 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1384                 dev->oper_log_mgm_entry_size =
1385                         choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1386                 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1387                 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1388                 dev->caps.fs_log_max_ucast_qp_range_size =
1389                         dev_cap->fs_log_max_ucast_qp_range_size;
1390         } else {
1391                 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1392                     dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1393                         dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1394                 else {
1395                         dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1396
1397                         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1398                             dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1399                                 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags "
1400                                           "set to use B0 steering. Falling back to A0 steering mode.\n");
1401                 }
1402                 dev->oper_log_mgm_entry_size =
1403                         mlx4_log_num_mgm_entry_size > 0 ?
1404                         mlx4_log_num_mgm_entry_size :
1405                         MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1406                 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1407         }
1408         mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, "
1409                  "modparam log_num_mgm_entry_size = %d\n",
1410                  mlx4_steering_mode_str(dev->caps.steering_mode),
1411                  dev->oper_log_mgm_entry_size,
1412                  mlx4_log_num_mgm_entry_size);
1413 }
1414
1415 static int mlx4_init_hca(struct mlx4_dev *dev)
1416 {
1417         struct mlx4_priv          *priv = mlx4_priv(dev);
1418         struct mlx4_adapter        adapter;
1419         struct mlx4_dev_cap        dev_cap;
1420         struct mlx4_mod_stat_cfg   mlx4_cfg;
1421         struct mlx4_profile        profile;
1422         struct mlx4_init_hca_param init_hca;
1423         u64 icm_size;
1424         int err;
1425
1426         if (!mlx4_is_slave(dev)) {
1427                 err = mlx4_QUERY_FW(dev);
1428                 if (err) {
1429                         if (err == -EACCES)
1430                                 mlx4_info(dev, "non-primary physical function, skipping.\n");
1431                         else
1432                                 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
1433                         return err;
1434                 }
1435
1436                 err = mlx4_load_fw(dev);
1437                 if (err) {
1438                         mlx4_err(dev, "Failed to start FW, aborting.\n");
1439                         return err;
1440                 }
1441
1442                 mlx4_cfg.log_pg_sz_m = 1;
1443                 mlx4_cfg.log_pg_sz = 0;
1444                 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1445                 if (err)
1446                         mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1447
1448                 err = mlx4_dev_cap(dev, &dev_cap);
1449                 if (err) {
1450                         mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
1451                         goto err_stop_fw;
1452                 }
1453
1454                 choose_steering_mode(dev, &dev_cap);
1455
1456                 if (mlx4_is_master(dev))
1457                         mlx4_parav_master_pf_caps(dev);
1458
1459                 profile = default_profile;
1460                 if (dev->caps.steering_mode ==
1461                     MLX4_STEERING_MODE_DEVICE_MANAGED)
1462                         profile.num_mcg = MLX4_FS_NUM_MCG;
1463
1464                 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1465                                              &init_hca);
1466                 if ((long long) icm_size < 0) {
1467                         err = icm_size;
1468                         goto err_stop_fw;
1469                 }
1470
1471                 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1472
1473                 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1474                 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1475                 init_hca.mw_enabled = 0;
1476                 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1477                     dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
1478                         init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
1479
1480                 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1481                 if (err)
1482                         goto err_stop_fw;
1483
1484                 err = mlx4_INIT_HCA(dev, &init_hca);
1485                 if (err) {
1486                         mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
1487                         goto err_free_icm;
1488                 }
1489                 /*
1490                  * If TS is supported by FW
1491                  * read HCA frequency by QUERY_HCA command
1492                  */
1493                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
1494                         memset(&init_hca, 0, sizeof(init_hca));
1495                         err = mlx4_QUERY_HCA(dev, &init_hca);
1496                         if (err) {
1497                                 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp.\n");
1498                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1499                         } else {
1500                                 dev->caps.hca_core_clock =
1501                                         init_hca.hca_core_clock;
1502                         }
1503
1504                         /* In case we got HCA frequency 0 - disable timestamping
1505                          * to avoid dividing by zero
1506                          */
1507                         if (!dev->caps.hca_core_clock) {
1508                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1509                                 mlx4_err(dev,
1510                                          "HCA frequency is 0. Timestamping is not supported.");
1511                         } else if (map_internal_clock(dev)) {
1512                                 /*
1513                                  * Map internal clock,
1514                                  * in case of failure disable timestamping
1515                                  */
1516                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1517                                 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported.\n");
1518                         }
1519                 }
1520         } else {
1521                 err = mlx4_init_slave(dev);
1522                 if (err) {
1523                         if (err != -EPROBE_DEFER)
1524                                 mlx4_err(dev, "Failed to initialize slave\n");
1525                         return err;
1526                 }
1527
1528                 err = mlx4_slave_cap(dev);
1529                 if (err) {
1530                         mlx4_err(dev, "Failed to obtain slave caps\n");
1531                         goto err_close;
1532                 }
1533         }
1534
1535         if (map_bf_area(dev))
1536                 mlx4_dbg(dev, "Failed to map blue flame area\n");
1537
1538         /*Only the master set the ports, all the rest got it from it.*/
1539         if (!mlx4_is_slave(dev))
1540                 mlx4_set_port_mask(dev);
1541
1542         err = mlx4_QUERY_ADAPTER(dev, &adapter);
1543         if (err) {
1544                 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
1545                 goto unmap_bf;
1546         }
1547
1548         priv->eq_table.inta_pin = adapter.inta_pin;
1549         memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1550
1551         return 0;
1552
1553 unmap_bf:
1554         unmap_internal_clock(dev);
1555         unmap_bf_area(dev);
1556
1557 err_close:
1558         if (mlx4_is_slave(dev))
1559                 mlx4_slave_exit(dev);
1560         else
1561                 mlx4_CLOSE_HCA(dev, 0);
1562
1563 err_free_icm:
1564         if (!mlx4_is_slave(dev))
1565                 mlx4_free_icms(dev);
1566
1567 err_stop_fw:
1568         if (!mlx4_is_slave(dev)) {
1569                 mlx4_UNMAP_FA(dev);
1570                 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1571         }
1572         return err;
1573 }
1574
1575 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1576 {
1577         struct mlx4_priv *priv = mlx4_priv(dev);
1578         int nent;
1579
1580         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1581                 return -ENOENT;
1582
1583         nent = dev->caps.max_counters;
1584         return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1585 }
1586
1587 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1588 {
1589         mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1590 }
1591
1592 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1593 {
1594         struct mlx4_priv *priv = mlx4_priv(dev);
1595
1596         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1597                 return -ENOENT;
1598
1599         *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1600         if (*idx == -1)
1601                 return -ENOMEM;
1602
1603         return 0;
1604 }
1605
1606 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1607 {
1608         u64 out_param;
1609         int err;
1610
1611         if (mlx4_is_mfunc(dev)) {
1612                 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1613                                    RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1614                                    MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1615                 if (!err)
1616                         *idx = get_param_l(&out_param);
1617
1618                 return err;
1619         }
1620         return __mlx4_counter_alloc(dev, idx);
1621 }
1622 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1623
1624 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1625 {
1626         mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx);
1627         return;
1628 }
1629
1630 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1631 {
1632         u64 in_param = 0;
1633
1634         if (mlx4_is_mfunc(dev)) {
1635                 set_param_l(&in_param, idx);
1636                 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1637                          MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1638                          MLX4_CMD_WRAPPED);
1639                 return;
1640         }
1641         __mlx4_counter_free(dev, idx);
1642 }
1643 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1644
1645 static int mlx4_setup_hca(struct mlx4_dev *dev)
1646 {
1647         struct mlx4_priv *priv = mlx4_priv(dev);
1648         int err;
1649         int port;
1650         __be32 ib_port_default_caps;
1651
1652         err = mlx4_init_uar_table(dev);
1653         if (err) {
1654                 mlx4_err(dev, "Failed to initialize "
1655                          "user access region table, aborting.\n");
1656                 return err;
1657         }
1658
1659         err = mlx4_uar_alloc(dev, &priv->driver_uar);
1660         if (err) {
1661                 mlx4_err(dev, "Failed to allocate driver access region, "
1662                          "aborting.\n");
1663                 goto err_uar_table_free;
1664         }
1665
1666         priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1667         if (!priv->kar) {
1668                 mlx4_err(dev, "Couldn't map kernel access region, "
1669                          "aborting.\n");
1670                 err = -ENOMEM;
1671                 goto err_uar_free;
1672         }
1673
1674         err = mlx4_init_pd_table(dev);
1675         if (err) {
1676                 mlx4_err(dev, "Failed to initialize "
1677                          "protection domain table, aborting.\n");
1678                 goto err_kar_unmap;
1679         }
1680
1681         err = mlx4_init_xrcd_table(dev);
1682         if (err) {
1683                 mlx4_err(dev, "Failed to initialize "
1684                          "reliable connection domain table, aborting.\n");
1685                 goto err_pd_table_free;
1686         }
1687
1688         err = mlx4_init_mr_table(dev);
1689         if (err) {
1690                 mlx4_err(dev, "Failed to initialize "
1691                          "memory region table, aborting.\n");
1692                 goto err_xrcd_table_free;
1693         }
1694
1695         err = mlx4_init_eq_table(dev);
1696         if (err) {
1697                 mlx4_err(dev, "Failed to initialize "
1698                          "event queue table, aborting.\n");
1699                 goto err_mr_table_free;
1700         }
1701
1702         err = mlx4_cmd_use_events(dev);
1703         if (err) {
1704                 mlx4_err(dev, "Failed to switch to event-driven "
1705                          "firmware commands, aborting.\n");
1706                 goto err_eq_table_free;
1707         }
1708
1709         err = mlx4_NOP(dev);
1710         if (err) {
1711                 if (dev->flags & MLX4_FLAG_MSI_X) {
1712                         mlx4_warn(dev, "NOP command failed to generate MSI-X "
1713                                   "interrupt IRQ %d).\n",
1714                                   priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1715                         mlx4_warn(dev, "Trying again without MSI-X.\n");
1716                 } else {
1717                         mlx4_err(dev, "NOP command failed to generate interrupt "
1718                                  "(IRQ %d), aborting.\n",
1719                                  priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1720                         mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1721                 }
1722
1723                 goto err_cmd_poll;
1724         }
1725
1726         mlx4_dbg(dev, "NOP command IRQ test passed\n");
1727
1728         err = mlx4_init_cq_table(dev);
1729         if (err) {
1730                 mlx4_err(dev, "Failed to initialize "
1731                          "completion queue table, aborting.\n");
1732                 goto err_cmd_poll;
1733         }
1734
1735         err = mlx4_init_srq_table(dev);
1736         if (err) {
1737                 mlx4_err(dev, "Failed to initialize "
1738                          "shared receive queue table, aborting.\n");
1739                 goto err_cq_table_free;
1740         }
1741
1742         err = mlx4_init_qp_table(dev);
1743         if (err) {
1744                 mlx4_err(dev, "Failed to initialize "
1745                          "queue pair table, aborting.\n");
1746                 goto err_srq_table_free;
1747         }
1748
1749         if (!mlx4_is_slave(dev)) {
1750                 err = mlx4_init_mcg_table(dev);
1751                 if (err) {
1752                         mlx4_err(dev, "Failed to initialize "
1753                                  "multicast group table, aborting.\n");
1754                         goto err_qp_table_free;
1755                 }
1756         }
1757
1758         err = mlx4_init_counters_table(dev);
1759         if (err && err != -ENOENT) {
1760                 mlx4_err(dev, "Failed to initialize counters table, aborting.\n");
1761                 goto err_mcg_table_free;
1762         }
1763
1764         if (!mlx4_is_slave(dev)) {
1765                 for (port = 1; port <= dev->caps.num_ports; port++) {
1766                         ib_port_default_caps = 0;
1767                         err = mlx4_get_port_ib_caps(dev, port,
1768                                                     &ib_port_default_caps);
1769                         if (err)
1770                                 mlx4_warn(dev, "failed to get port %d default "
1771                                           "ib capabilities (%d). Continuing "
1772                                           "with caps = 0\n", port, err);
1773                         dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1774
1775                         /* initialize per-slave default ib port capabilities */
1776                         if (mlx4_is_master(dev)) {
1777                                 int i;
1778                                 for (i = 0; i < dev->num_slaves; i++) {
1779                                         if (i == mlx4_master_func_num(dev))
1780                                                 continue;
1781                                         priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1782                                                         ib_port_default_caps;
1783                                 }
1784                         }
1785
1786                         if (mlx4_is_mfunc(dev))
1787                                 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1788                         else
1789                                 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1790
1791                         err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1792                                             dev->caps.pkey_table_len[port] : -1);
1793                         if (err) {
1794                                 mlx4_err(dev, "Failed to set port %d, aborting\n",
1795                                         port);
1796                                 goto err_counters_table_free;
1797                         }
1798                 }
1799         }
1800
1801         return 0;
1802
1803 err_counters_table_free:
1804         mlx4_cleanup_counters_table(dev);
1805
1806 err_mcg_table_free:
1807         mlx4_cleanup_mcg_table(dev);
1808
1809 err_qp_table_free:
1810         mlx4_cleanup_qp_table(dev);
1811
1812 err_srq_table_free:
1813         mlx4_cleanup_srq_table(dev);
1814
1815 err_cq_table_free:
1816         mlx4_cleanup_cq_table(dev);
1817
1818 err_cmd_poll:
1819         mlx4_cmd_use_polling(dev);
1820
1821 err_eq_table_free:
1822         mlx4_cleanup_eq_table(dev);
1823
1824 err_mr_table_free:
1825         mlx4_cleanup_mr_table(dev);
1826
1827 err_xrcd_table_free:
1828         mlx4_cleanup_xrcd_table(dev);
1829
1830 err_pd_table_free:
1831         mlx4_cleanup_pd_table(dev);
1832
1833 err_kar_unmap:
1834         iounmap(priv->kar);
1835
1836 err_uar_free:
1837         mlx4_uar_free(dev, &priv->driver_uar);
1838
1839 err_uar_table_free:
1840         mlx4_cleanup_uar_table(dev);
1841         return err;
1842 }
1843
1844 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1845 {
1846         struct mlx4_priv *priv = mlx4_priv(dev);
1847         struct msix_entry *entries;
1848         int nreq = min_t(int, dev->caps.num_ports *
1849                          min_t(int, netif_get_num_default_rss_queues() + 1,
1850                                MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
1851         int err;
1852         int i;
1853
1854         if (msi_x) {
1855                 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
1856                              nreq);
1857
1858                 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
1859                 if (!entries)
1860                         goto no_msi;
1861
1862                 for (i = 0; i < nreq; ++i)
1863                         entries[i].entry = i;
1864
1865         retry:
1866                 err = pci_enable_msix(dev->pdev, entries, nreq);
1867                 if (err) {
1868                         /* Try again if at least 2 vectors are available */
1869                         if (err > 1) {
1870                                 mlx4_info(dev, "Requested %d vectors, "
1871                                           "but only %d MSI-X vectors available, "
1872                                           "trying again\n", nreq, err);
1873                                 nreq = err;
1874                                 goto retry;
1875                         }
1876                         kfree(entries);
1877                         goto no_msi;
1878                 }
1879
1880                 if (nreq <
1881                     MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
1882                         /*Working in legacy mode , all EQ's shared*/
1883                         dev->caps.comp_pool           = 0;
1884                         dev->caps.num_comp_vectors = nreq - 1;
1885                 } else {
1886                         dev->caps.comp_pool           = nreq - MSIX_LEGACY_SZ;
1887                         dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
1888                 }
1889                 for (i = 0; i < nreq; ++i)
1890                         priv->eq_table.eq[i].irq = entries[i].vector;
1891
1892                 dev->flags |= MLX4_FLAG_MSI_X;
1893
1894                 kfree(entries);
1895                 return;
1896         }
1897
1898 no_msi:
1899         dev->caps.num_comp_vectors = 1;
1900         dev->caps.comp_pool        = 0;
1901
1902         for (i = 0; i < 2; ++i)
1903                 priv->eq_table.eq[i].irq = dev->pdev->irq;
1904 }
1905
1906 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
1907 {
1908         struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
1909         int err = 0;
1910
1911         info->dev = dev;
1912         info->port = port;
1913         if (!mlx4_is_slave(dev)) {
1914                 mlx4_init_mac_table(dev, &info->mac_table);
1915                 mlx4_init_vlan_table(dev, &info->vlan_table);
1916                 info->base_qpn = mlx4_get_base_qpn(dev, port);
1917         }
1918
1919         sprintf(info->dev_name, "mlx4_port%d", port);
1920         info->port_attr.attr.name = info->dev_name;
1921         if (mlx4_is_mfunc(dev))
1922                 info->port_attr.attr.mode = S_IRUGO;
1923         else {
1924                 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
1925                 info->port_attr.store     = set_port_type;
1926         }
1927         info->port_attr.show      = show_port_type;
1928         sysfs_attr_init(&info->port_attr.attr);
1929
1930         err = device_create_file(&dev->pdev->dev, &info->port_attr);
1931         if (err) {
1932                 mlx4_err(dev, "Failed to create file for port %d\n", port);
1933                 info->port = -1;
1934         }
1935
1936         sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
1937         info->port_mtu_attr.attr.name = info->dev_mtu_name;
1938         if (mlx4_is_mfunc(dev))
1939                 info->port_mtu_attr.attr.mode = S_IRUGO;
1940         else {
1941                 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
1942                 info->port_mtu_attr.store     = set_port_ib_mtu;
1943         }
1944         info->port_mtu_attr.show      = show_port_ib_mtu;
1945         sysfs_attr_init(&info->port_mtu_attr.attr);
1946
1947         err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
1948         if (err) {
1949                 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
1950                 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1951                 info->port = -1;
1952         }
1953
1954         return err;
1955 }
1956
1957 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
1958 {
1959         if (info->port < 0)
1960                 return;
1961
1962         device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1963         device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
1964 }
1965
1966 static int mlx4_init_steering(struct mlx4_dev *dev)
1967 {
1968         struct mlx4_priv *priv = mlx4_priv(dev);
1969         int num_entries = dev->caps.num_ports;
1970         int i, j;
1971
1972         priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
1973         if (!priv->steer)
1974                 return -ENOMEM;
1975
1976         for (i = 0; i < num_entries; i++)
1977                 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1978                         INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
1979                         INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
1980                 }
1981         return 0;
1982 }
1983
1984 static void mlx4_clear_steering(struct mlx4_dev *dev)
1985 {
1986         struct mlx4_priv *priv = mlx4_priv(dev);
1987         struct mlx4_steer_index *entry, *tmp_entry;
1988         struct mlx4_promisc_qp *pqp, *tmp_pqp;
1989         int num_entries = dev->caps.num_ports;
1990         int i, j;
1991
1992         for (i = 0; i < num_entries; i++) {
1993                 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1994                         list_for_each_entry_safe(pqp, tmp_pqp,
1995                                                  &priv->steer[i].promisc_qps[j],
1996                                                  list) {
1997                                 list_del(&pqp->list);
1998                                 kfree(pqp);
1999                         }
2000                         list_for_each_entry_safe(entry, tmp_entry,
2001                                                  &priv->steer[i].steer_entries[j],
2002                                                  list) {
2003                                 list_del(&entry->list);
2004                                 list_for_each_entry_safe(pqp, tmp_pqp,
2005                                                          &entry->duplicates,
2006                                                          list) {
2007                                         list_del(&pqp->list);
2008                                         kfree(pqp);
2009                                 }
2010                                 kfree(entry);
2011                         }
2012                 }
2013         }
2014         kfree(priv->steer);
2015 }
2016
2017 static int extended_func_num(struct pci_dev *pdev)
2018 {
2019         return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2020 }
2021
2022 #define MLX4_OWNER_BASE 0x8069c
2023 #define MLX4_OWNER_SIZE 4
2024
2025 static int mlx4_get_ownership(struct mlx4_dev *dev)
2026 {
2027         void __iomem *owner;
2028         u32 ret;
2029
2030         if (pci_channel_offline(dev->pdev))
2031                 return -EIO;
2032
2033         owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2034                         MLX4_OWNER_SIZE);
2035         if (!owner) {
2036                 mlx4_err(dev, "Failed to obtain ownership bit\n");
2037                 return -ENOMEM;
2038         }
2039
2040         ret = readl(owner);
2041         iounmap(owner);
2042         return (int) !!ret;
2043 }
2044
2045 static void mlx4_free_ownership(struct mlx4_dev *dev)
2046 {
2047         void __iomem *owner;
2048
2049         if (pci_channel_offline(dev->pdev))
2050                 return;
2051
2052         owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2053                         MLX4_OWNER_SIZE);
2054         if (!owner) {
2055                 mlx4_err(dev, "Failed to obtain ownership bit\n");
2056                 return;
2057         }
2058         writel(0, owner);
2059         msleep(1000);
2060         iounmap(owner);
2061 }
2062
2063 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
2064 {
2065         struct mlx4_priv *priv;
2066         struct mlx4_dev *dev;
2067         int err;
2068         int port;
2069
2070         pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
2071
2072         err = pci_enable_device(pdev);
2073         if (err) {
2074                 dev_err(&pdev->dev, "Cannot enable PCI device, "
2075                         "aborting.\n");
2076                 return err;
2077         }
2078         if (num_vfs > MLX4_MAX_NUM_VF) {
2079                 printk(KERN_ERR "There are more VF's (%d) than allowed(%d)\n",
2080                        num_vfs, MLX4_MAX_NUM_VF);
2081                 return -EINVAL;
2082         }
2083         /*
2084          * Check for BARs.
2085          */
2086         if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
2087             !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2088                 dev_err(&pdev->dev, "Missing DCS, aborting."
2089                         "(driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
2090                         pci_dev_data, pci_resource_flags(pdev, 0));
2091                 err = -ENODEV;
2092                 goto err_disable_pdev;
2093         }
2094         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
2095                 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
2096                 err = -ENODEV;
2097                 goto err_disable_pdev;
2098         }
2099
2100         err = pci_request_regions(pdev, DRV_NAME);
2101         if (err) {
2102                 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
2103                 goto err_disable_pdev;
2104         }
2105
2106         pci_set_master(pdev);
2107
2108         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2109         if (err) {
2110                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
2111                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2112                 if (err) {
2113                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
2114                         goto err_release_regions;
2115                 }
2116         }
2117         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2118         if (err) {
2119                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
2120                          "consistent PCI DMA mask.\n");
2121                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2122                 if (err) {
2123                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
2124                                 "aborting.\n");
2125                         goto err_release_regions;
2126                 }
2127         }
2128
2129         /* Allow large DMA segments, up to the firmware limit of 1 GB */
2130         dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
2131
2132         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2133         if (!priv) {
2134                 err = -ENOMEM;
2135                 goto err_release_regions;
2136         }
2137
2138         dev       = &priv->dev;
2139         dev->pdev = pdev;
2140         INIT_LIST_HEAD(&priv->ctx_list);
2141         spin_lock_init(&priv->ctx_lock);
2142
2143         mutex_init(&priv->port_mutex);
2144
2145         INIT_LIST_HEAD(&priv->pgdir_list);
2146         mutex_init(&priv->pgdir_mutex);
2147
2148         INIT_LIST_HEAD(&priv->bf_list);
2149         mutex_init(&priv->bf_mutex);
2150
2151         dev->rev_id = pdev->revision;
2152         /* Detect if this device is a virtual function */
2153         if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2154                 /* When acting as pf, we normally skip vfs unless explicitly
2155                  * requested to probe them. */
2156                 if (num_vfs && extended_func_num(pdev) > probe_vf) {
2157                         mlx4_warn(dev, "Skipping virtual function:%d\n",
2158                                                 extended_func_num(pdev));
2159                         err = -ENODEV;
2160                         goto err_free_dev;
2161                 }
2162                 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2163                 dev->flags |= MLX4_FLAG_SLAVE;
2164         } else {
2165                 /* We reset the device and enable SRIOV only for physical
2166                  * devices.  Try to claim ownership on the device;
2167                  * if already taken, skip -- do not allow multiple PFs */
2168                 err = mlx4_get_ownership(dev);
2169                 if (err) {
2170                         if (err < 0)
2171                                 goto err_free_dev;
2172                         else {
2173                                 mlx4_warn(dev, "Multiple PFs not yet supported."
2174                                           " Skipping PF.\n");
2175                                 err = -EINVAL;
2176                                 goto err_free_dev;
2177                         }
2178                 }
2179
2180                 if (num_vfs) {
2181                         mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", num_vfs);
2182                         err = pci_enable_sriov(pdev, num_vfs);
2183                         if (err) {
2184                                 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d).\n",
2185                                          err);
2186                                 err = 0;
2187                         } else {
2188                                 mlx4_warn(dev, "Running in master mode\n");
2189                                 dev->flags |= MLX4_FLAG_SRIOV |
2190                                               MLX4_FLAG_MASTER;
2191                                 dev->num_vfs = num_vfs;
2192                         }
2193                 }
2194
2195                 /*
2196                  * Now reset the HCA before we touch the PCI capabilities or
2197                  * attempt a firmware command, since a boot ROM may have left
2198                  * the HCA in an undefined state.
2199                  */
2200                 err = mlx4_reset(dev);
2201                 if (err) {
2202                         mlx4_err(dev, "Failed to reset HCA, aborting.\n");
2203                         goto err_rel_own;
2204                 }
2205         }
2206
2207 slave_start:
2208         err = mlx4_cmd_init(dev);
2209         if (err) {
2210                 mlx4_err(dev, "Failed to init command interface, aborting.\n");
2211                 goto err_sriov;
2212         }
2213
2214         /* In slave functions, the communication channel must be initialized
2215          * before posting commands. Also, init num_slaves before calling
2216          * mlx4_init_hca */
2217         if (mlx4_is_mfunc(dev)) {
2218                 if (mlx4_is_master(dev))
2219                         dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2220                 else {
2221                         dev->num_slaves = 0;
2222                         err = mlx4_multi_func_init(dev);
2223                         if (err) {
2224                                 mlx4_err(dev, "Failed to init slave mfunc"
2225                                          " interface, aborting.\n");
2226                                 goto err_cmd;
2227                         }
2228                 }
2229         }
2230
2231         err = mlx4_init_hca(dev);
2232         if (err) {
2233                 if (err == -EACCES) {
2234                         /* Not primary Physical function
2235                          * Running in slave mode */
2236                         mlx4_cmd_cleanup(dev);
2237                         dev->flags |= MLX4_FLAG_SLAVE;
2238                         dev->flags &= ~MLX4_FLAG_MASTER;
2239                         goto slave_start;
2240                 } else
2241                         goto err_mfunc;
2242         }
2243
2244         /* In master functions, the communication channel must be initialized
2245          * after obtaining its address from fw */
2246         if (mlx4_is_master(dev)) {
2247                 err = mlx4_multi_func_init(dev);
2248                 if (err) {
2249                         mlx4_err(dev, "Failed to init master mfunc"
2250                                  "interface, aborting.\n");
2251                         goto err_close;
2252                 }
2253         }
2254
2255         err = mlx4_alloc_eq_table(dev);
2256         if (err)
2257                 goto err_master_mfunc;
2258
2259         priv->msix_ctl.pool_bm = 0;
2260         mutex_init(&priv->msix_ctl.pool_lock);
2261
2262         mlx4_enable_msi_x(dev);
2263         if ((mlx4_is_mfunc(dev)) &&
2264             !(dev->flags & MLX4_FLAG_MSI_X)) {
2265                 err = -ENOSYS;
2266                 mlx4_err(dev, "INTx is not supported in multi-function mode."
2267                          " aborting.\n");
2268                 goto err_free_eq;
2269         }
2270
2271         if (!mlx4_is_slave(dev)) {
2272                 err = mlx4_init_steering(dev);
2273                 if (err)
2274                         goto err_free_eq;
2275         }
2276
2277         err = mlx4_setup_hca(dev);
2278         if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2279             !mlx4_is_mfunc(dev)) {
2280                 dev->flags &= ~MLX4_FLAG_MSI_X;
2281                 dev->caps.num_comp_vectors = 1;
2282                 dev->caps.comp_pool        = 0;
2283                 pci_disable_msix(pdev);
2284                 err = mlx4_setup_hca(dev);
2285         }
2286
2287         if (err)
2288                 goto err_steer;
2289
2290         for (port = 1; port <= dev->caps.num_ports; port++) {
2291                 err = mlx4_init_port_info(dev, port);
2292                 if (err)
2293                         goto err_port;
2294         }
2295
2296         err = mlx4_register_device(dev);
2297         if (err)
2298                 goto err_port;
2299
2300         mlx4_sense_init(dev);
2301         mlx4_start_sense(dev);
2302
2303         priv->pci_dev_data = pci_dev_data;
2304         pci_set_drvdata(pdev, dev);
2305
2306         return 0;
2307
2308 err_port:
2309         for (--port; port >= 1; --port)
2310                 mlx4_cleanup_port_info(&priv->port[port]);
2311
2312         mlx4_cleanup_counters_table(dev);
2313         mlx4_cleanup_mcg_table(dev);
2314         mlx4_cleanup_qp_table(dev);
2315         mlx4_cleanup_srq_table(dev);
2316         mlx4_cleanup_cq_table(dev);
2317         mlx4_cmd_use_polling(dev);
2318         mlx4_cleanup_eq_table(dev);
2319         mlx4_cleanup_mr_table(dev);
2320         mlx4_cleanup_xrcd_table(dev);
2321         mlx4_cleanup_pd_table(dev);
2322         mlx4_cleanup_uar_table(dev);
2323
2324 err_steer:
2325         if (!mlx4_is_slave(dev))
2326                 mlx4_clear_steering(dev);
2327
2328 err_free_eq:
2329         mlx4_free_eq_table(dev);
2330
2331 err_master_mfunc:
2332         if (mlx4_is_master(dev))
2333                 mlx4_multi_func_cleanup(dev);
2334
2335 err_close:
2336         if (dev->flags & MLX4_FLAG_MSI_X)
2337                 pci_disable_msix(pdev);
2338
2339         mlx4_close_hca(dev);
2340
2341 err_mfunc:
2342         if (mlx4_is_slave(dev))
2343                 mlx4_multi_func_cleanup(dev);
2344
2345 err_cmd:
2346         mlx4_cmd_cleanup(dev);
2347
2348 err_sriov:
2349         if (dev->flags & MLX4_FLAG_SRIOV)
2350                 pci_disable_sriov(pdev);
2351
2352 err_rel_own:
2353         if (!mlx4_is_slave(dev))
2354                 mlx4_free_ownership(dev);
2355
2356 err_free_dev:
2357         kfree(priv);
2358
2359 err_release_regions:
2360         pci_release_regions(pdev);
2361
2362 err_disable_pdev:
2363         pci_disable_device(pdev);
2364         pci_set_drvdata(pdev, NULL);
2365         return err;
2366 }
2367
2368 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
2369 {
2370         printk_once(KERN_INFO "%s", mlx4_version);
2371
2372         return __mlx4_init_one(pdev, id->driver_data);
2373 }
2374
2375 static void mlx4_remove_one(struct pci_dev *pdev)
2376 {
2377         struct mlx4_dev  *dev  = pci_get_drvdata(pdev);
2378         struct mlx4_priv *priv = mlx4_priv(dev);
2379         int p;
2380
2381         if (dev) {
2382                 /* in SRIOV it is not allowed to unload the pf's
2383                  * driver while there are alive vf's */
2384                 if (mlx4_is_master(dev)) {
2385                         if (mlx4_how_many_lives_vf(dev))
2386                                 printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
2387                 }
2388                 mlx4_stop_sense(dev);
2389                 mlx4_unregister_device(dev);
2390
2391                 for (p = 1; p <= dev->caps.num_ports; p++) {
2392                         mlx4_cleanup_port_info(&priv->port[p]);
2393                         mlx4_CLOSE_PORT(dev, p);
2394                 }
2395
2396                 if (mlx4_is_master(dev))
2397                         mlx4_free_resource_tracker(dev,
2398                                                    RES_TR_FREE_SLAVES_ONLY);
2399
2400                 mlx4_cleanup_counters_table(dev);
2401                 mlx4_cleanup_mcg_table(dev);
2402                 mlx4_cleanup_qp_table(dev);
2403                 mlx4_cleanup_srq_table(dev);
2404                 mlx4_cleanup_cq_table(dev);
2405                 mlx4_cmd_use_polling(dev);
2406                 mlx4_cleanup_eq_table(dev);
2407                 mlx4_cleanup_mr_table(dev);
2408                 mlx4_cleanup_xrcd_table(dev);
2409                 mlx4_cleanup_pd_table(dev);
2410
2411                 if (mlx4_is_master(dev))
2412                         mlx4_free_resource_tracker(dev,
2413                                                    RES_TR_FREE_STRUCTS_ONLY);
2414
2415                 iounmap(priv->kar);
2416                 mlx4_uar_free(dev, &priv->driver_uar);
2417                 mlx4_cleanup_uar_table(dev);
2418                 if (!mlx4_is_slave(dev))
2419                         mlx4_clear_steering(dev);
2420                 mlx4_free_eq_table(dev);
2421                 if (mlx4_is_master(dev))
2422                         mlx4_multi_func_cleanup(dev);
2423                 mlx4_close_hca(dev);
2424                 if (mlx4_is_slave(dev))
2425                         mlx4_multi_func_cleanup(dev);
2426                 mlx4_cmd_cleanup(dev);
2427
2428                 if (dev->flags & MLX4_FLAG_MSI_X)
2429                         pci_disable_msix(pdev);
2430                 if (dev->flags & MLX4_FLAG_SRIOV) {
2431                         mlx4_warn(dev, "Disabling SR-IOV\n");
2432                         pci_disable_sriov(pdev);
2433                 }
2434
2435                 if (!mlx4_is_slave(dev))
2436                         mlx4_free_ownership(dev);
2437
2438                 kfree(dev->caps.qp0_tunnel);
2439                 kfree(dev->caps.qp0_proxy);
2440                 kfree(dev->caps.qp1_tunnel);
2441                 kfree(dev->caps.qp1_proxy);
2442
2443                 kfree(priv);
2444                 pci_release_regions(pdev);
2445                 pci_disable_device(pdev);
2446                 pci_set_drvdata(pdev, NULL);
2447         }
2448 }
2449
2450 int mlx4_restart_one(struct pci_dev *pdev)
2451 {
2452         struct mlx4_dev  *dev  = pci_get_drvdata(pdev);
2453         struct mlx4_priv *priv = mlx4_priv(dev);
2454         int               pci_dev_data;
2455
2456         pci_dev_data = priv->pci_dev_data;
2457         mlx4_remove_one(pdev);
2458         return __mlx4_init_one(pdev, pci_dev_data);
2459 }
2460
2461 static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
2462         /* MT25408 "Hermon" SDR */
2463         { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2464         /* MT25408 "Hermon" DDR */
2465         { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2466         /* MT25408 "Hermon" QDR */
2467         { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2468         /* MT25408 "Hermon" DDR PCIe gen2 */
2469         { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2470         /* MT25408 "Hermon" QDR PCIe gen2 */
2471         { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2472         /* MT25408 "Hermon" EN 10GigE */
2473         { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2474         /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2475         { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2476         /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2477         { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2478         /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2479         { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2480         /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2481         { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2482         /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2483         { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2484         /* MT26478 ConnectX2 40GigE PCIe gen2 */
2485         { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2486         /* MT25400 Family [ConnectX-2 Virtual Function] */
2487         { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
2488         /* MT27500 Family [ConnectX-3] */
2489         { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2490         /* MT27500 Family [ConnectX-3 Virtual Function] */
2491         { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
2492         { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2493         { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2494         { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2495         { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2496         { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2497         { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2498         { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2499         { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2500         { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2501         { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2502         { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2503         { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2504         { 0, }
2505 };
2506
2507 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2508
2509 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2510                                               pci_channel_state_t state)
2511 {
2512         mlx4_remove_one(pdev);
2513
2514         return state == pci_channel_io_perm_failure ?
2515                 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2516 }
2517
2518 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2519 {
2520         int ret = __mlx4_init_one(pdev, 0);
2521
2522         return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2523 }
2524
2525 static const struct pci_error_handlers mlx4_err_handler = {
2526         .error_detected = mlx4_pci_err_detected,
2527         .slot_reset     = mlx4_pci_slot_reset,
2528 };
2529
2530 static struct pci_driver mlx4_driver = {
2531         .name           = DRV_NAME,
2532         .id_table       = mlx4_pci_table,
2533         .probe          = mlx4_init_one,
2534         .remove         = mlx4_remove_one,
2535         .err_handler    = &mlx4_err_handler,
2536 };
2537
2538 static int __init mlx4_verify_params(void)
2539 {
2540         if ((log_num_mac < 0) || (log_num_mac > 7)) {
2541                 pr_warning("mlx4_core: bad num_mac: %d\n", log_num_mac);
2542                 return -1;
2543         }
2544
2545         if (log_num_vlan != 0)
2546                 pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2547                            MLX4_LOG_NUM_VLANS);
2548
2549         if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2550                 pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
2551                 return -1;
2552         }
2553
2554         /* Check if module param for ports type has legal combination */
2555         if (port_type_array[0] == false && port_type_array[1] == true) {
2556                 printk(KERN_WARNING "Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2557                 port_type_array[0] = true;
2558         }
2559
2560         if (mlx4_log_num_mgm_entry_size != -1 &&
2561             (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
2562              mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE)) {
2563                 pr_warning("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not "
2564                            "in legal range (-1 or %d..%d)\n",
2565                            mlx4_log_num_mgm_entry_size,
2566                            MLX4_MIN_MGM_LOG_ENTRY_SIZE,
2567                            MLX4_MAX_MGM_LOG_ENTRY_SIZE);
2568                 return -1;
2569         }
2570
2571         return 0;
2572 }
2573
2574 static int __init mlx4_init(void)
2575 {
2576         int ret;
2577
2578         if (mlx4_verify_params())
2579                 return -EINVAL;
2580
2581         mlx4_catas_init();
2582
2583         mlx4_wq = create_singlethread_workqueue("mlx4");
2584         if (!mlx4_wq)
2585                 return -ENOMEM;
2586
2587         ret = pci_register_driver(&mlx4_driver);
2588         return ret < 0 ? ret : 0;
2589 }
2590
2591 static void __exit mlx4_cleanup(void)
2592 {
2593         pci_unregister_driver(&mlx4_driver);
2594         destroy_workqueue(mlx4_wq);
2595 }
2596
2597 module_init(mlx4_init);
2598 module_exit(mlx4_cleanup);