kernel/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/kmod.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 uint8_t num_vfs[3] = {0, 0, 0};
  81 static int num_vfs_argc;
  82 module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
  83 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
  84                           "num_vfs=port1,port2,port1+2");
  85
  86 static uint8_t probe_vf[3] = {0, 0, 0};
  87 static int probe_vfs_argc;
  88 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
  89 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
  90                            "probe_vf=port1,port2,port1+2");
  91
  92 int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
  93 module_param_named(log_num_mgm_entry_size,
  94                         mlx4_log_num_mgm_entry_size, int, 0444);
  95 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
  96                                          " of qp per mcg, for example:"
  97                                          " 10 gives 248.range: 7 <="
  98                                          " log_num_mgm_entry_size <= 12."
  99                                          " To activate device managed"
 100                                          " flow steering when available, set to -1");
 101
 102 static bool enable_64b_cqe_eqe = true;
 103 module_param(enable_64b_cqe_eqe, bool, 0444);
 104 MODULE_PARM_DESC(enable_64b_cqe_eqe,
 105                  "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
 106
 107 #define PF_CONTEXT_BEHAVIOUR_MASK       (MLX4_FUNC_CAP_64B_EQE_CQE | \
 108                                          MLX4_FUNC_CAP_EQE_CQE_STRIDE | \
 109                                          MLX4_FUNC_CAP_DMFS_A0_STATIC)
 110
 111 #define RESET_PERSIST_MASK_FLAGS        (MLX4_FLAG_SRIOV)
 112
 113 static char mlx4_version[] =
 114         DRV_NAME ": Mellanox ConnectX core driver v"
 115         DRV_VERSION " (" DRV_RELDATE ")\n";
 116
 117 static struct mlx4_profile default_profile = {
 118         .num_qp         = 1 << 18,
 119         .num_srq        = 1 << 16,
 120         .rdmarc_per_qp  = 1 << 4,
 121         .num_cq         = 1 << 16,
 122         .num_mcg        = 1 << 13,
 123         .num_mpt        = 1 << 19,
 124         .num_mtt        = 1 << 20, /* It is really num mtt segements */
 125 };
 126
 127 static struct mlx4_profile low_mem_profile = {
 128         .num_qp         = 1 << 17,
 129         .num_srq        = 1 << 6,
 130         .rdmarc_per_qp  = 1 << 4,
 131         .num_cq         = 1 << 8,
 132         .num_mcg        = 1 << 8,
 133         .num_mpt        = 1 << 9,
 134         .num_mtt        = 1 << 7,
 135 };
 136
 137 static int log_num_mac = 7;
 138 module_param_named(log_num_mac, log_num_mac, int, 0444);
 139 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
 140
 141 static int log_num_vlan;
 142 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
 143 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
 144 /* Log2 max number of VLANs per ETH port (0-7) */
 145 #define MLX4_LOG_NUM_VLANS 7
 146 #define MLX4_MIN_LOG_NUM_VLANS 0
 147 #define MLX4_MIN_LOG_NUM_MAC 1
 148
 149 static bool use_prio;
 150 module_param_named(use_prio, use_prio, bool, 0444);
 151 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
 152
 153 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
 154 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
 155 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
 156
 157 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
 158 static int arr_argc = 2;
 159 module_param_array(port_type_array, int, &arr_argc, 0444);
 160 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
 161                                 "1 for IB, 2 for Ethernet");
 162
 163 struct mlx4_port_config {
 164         struct list_head list;
 165         enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
 166         struct pci_dev *pdev;
 167 };
 168
 169 static atomic_t pf_loading = ATOMIC_INIT(0);
 170
 171 int mlx4_check_port_params(struct mlx4_dev *dev,
 172                            enum mlx4_port_type *port_type)
 173 {
 174         int i;
 175
 176         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
 177                 for (i = 0; i < dev->caps.num_ports - 1; i++) {
 178                         if (port_type[i] != port_type[i + 1]) {
 179                                 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
 180                                 return -EINVAL;
 181                         }
 182                 }
 183         }
 184
 185         for (i = 0; i < dev->caps.num_ports; i++) {
 186                 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
 187                         mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
 188                                  i + 1);
 189                         return -EINVAL;
 190                 }
 191         }
 192         return 0;
 193 }
 194
 195 static void mlx4_set_port_mask(struct mlx4_dev *dev)
 196 {
 197         int i;
 198
 199         for (i = 1; i <= dev->caps.num_ports; ++i)
 200                 dev->caps.port_mask[i] = dev->caps.port_type[i];
 201 }
 202
 203 enum {
 204         MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0,
 205 };
 206
 207 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 208 {
 209         int err = 0;
 210         struct mlx4_func func;
 211
 212         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
 213                 err = mlx4_QUERY_FUNC(dev, &func, 0);
 214                 if (err) {
 215                         mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
 216                         return err;
 217                 }
 218                 dev_cap->max_eqs = func.max_eq;
 219                 dev_cap->reserved_eqs = func.rsvd_eqs;
 220                 dev_cap->reserved_uars = func.rsvd_uars;
 221                 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS;
 222         }
 223         return err;
 224 }
 225
 226 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev)
 227 {
 228         struct mlx4_caps *dev_cap = &dev->caps;
 229
 230         /* FW not supporting or cancelled by user */
 231         if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) ||
 232             !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE))
 233                 return;
 234
 235         /* Must have 64B CQE_EQE enabled by FW to use bigger stride
 236          * When FW has NCSI it may decide not to report 64B CQE/EQEs
 237          */
 238         if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) ||
 239             !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) {
 240                 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
 241                 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
 242                 return;
 243         }
 244
 245         if (cache_line_size() == 128 || cache_line_size() == 256) {
 246                 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n");
 247                 /* Changing the real data inside CQE size to 32B */
 248                 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
 249                 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
 250
 251                 if (mlx4_is_master(dev))
 252                         dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE;
 253         } else {
 254                 if (cache_line_size() != 32  && cache_line_size() != 64)
 255                         mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n");
 256                 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
 257                 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
 258         }
 259 }
 260
 261 static int _mlx4_dev_port(struct mlx4_dev *dev, int port,
 262                           struct mlx4_port_cap *port_cap)
 263 {
 264         dev->caps.vl_cap[port]      = port_cap->max_vl;
 265         dev->caps.ib_mtu_cap[port]          = port_cap->ib_mtu;
 266         dev->phys_caps.gid_phys_table_len[port]  = port_cap->max_gids;
 267         dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys;
 268         /* set gid and pkey table operating lengths by default
 269          * to non-sriov values
 270          */
 271         dev->caps.gid_table_len[port]  = port_cap->max_gids;
 272         dev->caps.pkey_table_len[port] = port_cap->max_pkeys;
 273         dev->caps.port_width_cap[port] = port_cap->max_port_width;
 274         dev->caps.eth_mtu_cap[port]    = port_cap->eth_mtu;
 275         dev->caps.def_mac[port]        = port_cap->def_mac;
 276         dev->caps.supported_type[port] = port_cap->supported_port_types;
 277         dev->caps.suggested_type[port] = port_cap->suggested_type;
 278         dev->caps.default_sense[port] = port_cap->default_sense;
 279         dev->caps.trans_type[port]          = port_cap->trans_type;
 280         dev->caps.vendor_oui[port]     = port_cap->vendor_oui;
 281         dev->caps.wavelength[port]     = port_cap->wavelength;
 282         dev->caps.trans_code[port]     = port_cap->trans_code;
 283
 284         return 0;
 285 }
 286
 287 static int mlx4_dev_port(struct mlx4_dev *dev, int port,
 288                          struct mlx4_port_cap *port_cap)
 289 {
 290         int err = 0;
 291
 292         err = mlx4_QUERY_PORT(dev, port, port_cap);
 293
 294         if (err)
 295                 mlx4_err(dev, "QUERY_PORT command failed.\n");
 296
 297         return err;
 298 }
 299
 300 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
 301 {
 302         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
 303                 return;
 304
 305         if (mlx4_is_mfunc(dev)) {
 306                 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
 307                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
 308                 return;
 309         }
 310
 311         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
 312                 mlx4_dbg(dev,
 313                          "Keep FCS is not supported - Disabling Ignore FCS");
 314                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
 315                 return;
 316         }
 317 }
 318
 319 #define MLX4_A0_STEERING_TABLE_SIZE     256
 320 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 321 {
 322         int err;
 323         int i;
 324
 325         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
 326         if (err) {
 327                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
 328                 return err;
 329         }
 330         mlx4_dev_cap_dump(dev, dev_cap);
 331
 332         if (dev_cap->min_page_sz > PAGE_SIZE) {
 333                 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
 334                          dev_cap->min_page_sz, PAGE_SIZE);
 335                 return -ENODEV;
 336         }
 337         if (dev_cap->num_ports > MLX4_MAX_PORTS) {
 338                 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
 339                          dev_cap->num_ports, MLX4_MAX_PORTS);
 340                 return -ENODEV;
 341         }
 342
 343         if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) {
 344                 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
 345                          dev_cap->uar_size,
 346                          (unsigned long long)
 347                          pci_resource_len(dev->persist->pdev, 2));
 348                 return -ENODEV;
 349         }
 350
 351         dev->caps.num_ports          = dev_cap->num_ports;
 352         dev->caps.num_sys_eqs = dev_cap->num_sys_eqs;
 353         dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ?
 354                                       dev->caps.num_sys_eqs :
 355                                       MLX4_MAX_EQ_NUM;
 356         for (i = 1; i <= dev->caps.num_ports; ++i) {
 357                 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i);
 358                 if (err) {
 359                         mlx4_err(dev, "QUERY_PORT command failed, aborting\n");
 360                         return err;
 361                 }
 362         }
 363
 364         dev->caps.uar_page_size      = PAGE_SIZE;
 365         dev->caps.num_uars           = dev_cap->uar_size / PAGE_SIZE;
 366         dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
 367         dev->caps.bf_reg_size        = dev_cap->bf_reg_size;
 368         dev->caps.bf_regs_per_page   = dev_cap->bf_regs_per_page;
 369         dev->caps.max_sq_sg          = dev_cap->max_sq_sg;
 370         dev->caps.max_rq_sg          = dev_cap->max_rq_sg;
 371         dev->caps.max_wqes           = dev_cap->max_qp_sz;
 372         dev->caps.max_qp_init_rdma   = dev_cap->max_requester_per_qp;
 373         dev->caps.max_srq_wqes       = dev_cap->max_srq_sz;
 374         dev->caps.max_srq_sge        = dev_cap->max_rq_sg - 1;
 375         dev->caps.reserved_srqs      = dev_cap->reserved_srqs;
 376         dev->caps.max_sq_desc_sz     = dev_cap->max_sq_desc_sz;
 377         dev->caps.max_rq_desc_sz     = dev_cap->max_rq_desc_sz;
 378         /*
 379          * Subtract 1 from the limit because we need to allocate a
 380          * spare CQE so the HCA HW can tell the difference between an
 381          * empty CQ and a full CQ.
 382          */
 383         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
 384         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
 385         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
 386         dev->caps.reserved_mtts      = dev_cap->reserved_mtts;
 387         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
 388
 389         /* The first 128 UARs are used for EQ doorbells */
 390         dev->caps.reserved_uars      = max_t(int, 128, dev_cap->reserved_uars);
 391         dev->caps.reserved_pds       = dev_cap->reserved_pds;
 392         dev->caps.reserved_xrcds     = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
 393                                         dev_cap->reserved_xrcds : 0;
 394         dev->caps.max_xrcds          = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
 395                                         dev_cap->max_xrcds : 0;
 396         dev->caps.mtt_entry_sz       = dev_cap->mtt_entry_sz;
 397
 398         dev->caps.max_msg_sz         = dev_cap->max_msg_sz;
 399         dev->caps.page_size_cap      = ~(u32) (dev_cap->min_page_sz - 1);
 400         dev->caps.flags              = dev_cap->flags;
 401         dev->caps.flags2             = dev_cap->flags2;
 402         dev->caps.bmme_flags         = dev_cap->bmme_flags;
 403         dev->caps.reserved_lkey      = dev_cap->reserved_lkey;
 404         dev->caps.stat_rate_support  = dev_cap->stat_rate_support;
 405         dev->caps.max_gso_sz         = dev_cap->max_gso_sz;
 406         dev->caps.max_rss_tbl_sz     = dev_cap->max_rss_tbl_sz;
 407
 408         /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
 409         if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
 410                 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
 411         /* Don't do sense port on multifunction devices (for now at least) */
 412         if (mlx4_is_mfunc(dev))
 413                 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
 414
 415         if (mlx4_low_memory_profile()) {
 416                 dev->caps.log_num_macs  = MLX4_MIN_LOG_NUM_MAC;
 417                 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
 418         } else {
 419                 dev->caps.log_num_macs  = log_num_mac;
 420                 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
 421         }
 422
 423         for (i = 1; i <= dev->caps.num_ports; ++i) {
 424                 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
 425                 if (dev->caps.supported_type[i]) {
 426                         /* if only ETH is supported - assign ETH */
 427                         if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
 428                                 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
 429                         /* if only IB is supported, assign IB */
 430                         else if (dev->caps.supported_type[i] ==
 431                                  MLX4_PORT_TYPE_IB)
 432                                 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
 433                         else {
 434                                 /* if IB and ETH are supported, we set the port
 435                                  * type according to user selection of port type;
 436                                  * if user selected none, take the FW hint */
 437                                 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
 438                                         dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
 439                                                 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
 440                                 else
 441                                         dev->caps.port_type[i] = port_type_array[i - 1];
 442                         }
 443                 }
 444                 /*
 445                  * Link sensing is allowed on the port if 3 conditions are true:
 446                  * 1. Both protocols are supported on the port.
 447                  * 2. Different types are supported on the port
 448                  * 3. FW declared that it supports link sensing
 449                  */
 450                 mlx4_priv(dev)->sense.sense_allowed[i] =
 451                         ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
 452                          (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
 453                          (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
 454
 455                 /*
 456                  * If "default_sense" bit is set, we move the port to "AUTO" mode
 457                  * and perform sense_port FW command to try and set the correct
 458                  * port type from beginning
 459                  */
 460                 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
 461                         enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
 462                         dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
 463                         mlx4_SENSE_PORT(dev, i, &sensed_port);
 464                         if (sensed_port != MLX4_PORT_TYPE_NONE)
 465                                 dev->caps.port_type[i] = sensed_port;
 466                 } else {
 467                         dev->caps.possible_type[i] = dev->caps.port_type[i];
 468                 }
 469
 470                 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) {
 471                         dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs;
 472                         mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
 473                                   i, 1 << dev->caps.log_num_macs);
 474                 }
 475                 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) {
 476                         dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans;
 477                         mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
 478                                   i, 1 << dev->caps.log_num_vlans);
 479                 }
 480         }
 481
 482         dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
 483
 484         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
 485         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
 486                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
 487                 (1 << dev->caps.log_num_macs) *
 488                 (1 << dev->caps.log_num_vlans) *
 489                 dev->caps.num_ports;
 490         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
 491
 492         if (dev_cap->dmfs_high_rate_qpn_base > 0 &&
 493             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)
 494                 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base;
 495         else
 496                 dev->caps.dmfs_high_rate_qpn_base =
 497                         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
 498
 499         if (dev_cap->dmfs_high_rate_qpn_range > 0 &&
 500             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
 501                 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range;
 502                 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT;
 503                 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0;
 504         } else {
 505                 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED;
 506                 dev->caps.dmfs_high_rate_qpn_base =
 507                         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
 508                 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
 509         }
 510
 511         dev->caps.rl_caps = dev_cap->rl_caps;
 512
 513         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
 514                 dev->caps.dmfs_high_rate_qpn_range;
 515
 516         dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
 517                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
 518                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
 519                 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
 520
 521         dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
 522
 523         if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
 524                 if (dev_cap->flags &
 525                     (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
 526                         mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
 527                         dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
 528                         dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
 529                 }
 530
 531                 if (dev_cap->flags2 &
 532                     (MLX4_DEV_CAP_FLAG2_CQE_STRIDE |
 533                      MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) {
 534                         mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n");
 535                         dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
 536                         dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
 537                 }
 538         }
 539
 540         if ((dev->caps.flags &
 541             (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
 542             mlx4_is_master(dev))
 543                 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
 544
 545         if (!mlx4_is_slave(dev)) {
 546                 mlx4_enable_cqe_eqe_stride(dev);
 547                 dev->caps.alloc_res_qp_mask =
 548                         (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
 549                         MLX4_RESERVE_A0_QP;
 550
 551                 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
 552                     dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
 553                         mlx4_warn(dev, "Old device ETS support detected\n");
 554                         mlx4_warn(dev, "Consider upgrading device FW.\n");
 555                         dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
 556                 }
 557
 558         } else {
 559                 dev->caps.alloc_res_qp_mask = 0;
 560         }
 561
 562         mlx4_enable_ignore_fcs(dev);
 563
 564         return 0;
 565 }
 566
 567 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
 568                                        enum pci_bus_speed *speed,
 569                                        enum pcie_link_width *width)
 570 {
 571         u32 lnkcap1, lnkcap2;
 572         int err1, err2;
 573
 574 #define  PCIE_MLW_CAP_SHIFT 4   /* start of MLW mask in link capabilities */
 575
 576         *speed = PCI_SPEED_UNKNOWN;
 577         *width = PCIE_LNK_WIDTH_UNKNOWN;
 578
 579         err1 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP,
 580                                           &lnkcap1);
 581         err2 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP2,
 582                                           &lnkcap2);
 583         if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
 584                 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
 585                         *speed = PCIE_SPEED_8_0GT;
 586                 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
 587                         *speed = PCIE_SPEED_5_0GT;
 588                 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
 589                         *speed = PCIE_SPEED_2_5GT;
 590         }
 591         if (!err1) {
 592                 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
 593                 if (!lnkcap2) { /* pre-r3.0 */
 594                         if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
 595                                 *speed = PCIE_SPEED_5_0GT;
 596                         else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
 597                                 *speed = PCIE_SPEED_2_5GT;
 598                 }
 599         }
 600
 601         if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
 602                 return err1 ? err1 :
 603                         err2 ? err2 : -EINVAL;
 604         }
 605         return 0;
 606 }
 607
 608 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
 609 {
 610         enum pcie_link_width width, width_cap;
 611         enum pci_bus_speed speed, speed_cap;
 612         int err;
 613
 614 #define PCIE_SPEED_STR(speed) \
 615         (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
 616          speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
 617          speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
 618          "Unknown")
 619
 620         err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
 621         if (err) {
 622                 mlx4_warn(dev,
 623                           "Unable to determine PCIe device BW capabilities\n");
 624                 return;
 625         }
 626
 627         err = pcie_get_minimum_link(dev->persist->pdev, &speed, &width);
 628         if (err || speed == PCI_SPEED_UNKNOWN ||
 629             width == PCIE_LNK_WIDTH_UNKNOWN) {
 630                 mlx4_warn(dev,
 631                           "Unable to determine PCI device chain minimum BW\n");
 632                 return;
 633         }
 634
 635         if (width != width_cap || speed != speed_cap)
 636                 mlx4_warn(dev,
 637                           "PCIe BW is different than device's capability\n");
 638
 639         mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
 640                   PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
 641         mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
 642                   width, width_cap);
 643         return;
 644 }
 645
 646 /*The function checks if there are live vf, return the num of them*/
 647 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
 648 {
 649         struct mlx4_priv *priv = mlx4_priv(dev);
 650         struct mlx4_slave_state *s_state;
 651         int i;
 652         int ret = 0;
 653
 654         for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
 655                 s_state = &priv->mfunc.master.slave_state[i];
 656                 if (s_state->active && s_state->last_cmd !=
 657                     MLX4_COMM_CMD_RESET) {
 658                         mlx4_warn(dev, "%s: slave: %d is still active\n",
 659                                   __func__, i);
 660                         ret++;
 661                 }
 662         }
 663         return ret;
 664 }
 665
 666 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
 667 {
 668         u32 qk = MLX4_RESERVED_QKEY_BASE;
 669
 670         if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
 671             qpn < dev->phys_caps.base_proxy_sqpn)
 672                 return -EINVAL;
 673
 674         if (qpn >= dev->phys_caps.base_tunnel_sqpn)
 675                 /* tunnel qp */
 676                 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
 677         else
 678                 qk += qpn - dev->phys_caps.base_proxy_sqpn;
 679         *qkey = qk;
 680         return 0;
 681 }
 682 EXPORT_SYMBOL(mlx4_get_parav_qkey);
 683
 684 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
 685 {
 686         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 687
 688         if (!mlx4_is_master(dev))
 689                 return;
 690
 691         priv->virt2phys_pkey[slave][port - 1][i] = val;
 692 }
 693 EXPORT_SYMBOL(mlx4_sync_pkey_table);
 694
 695 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
 696 {
 697         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 698
 699         if (!mlx4_is_master(dev))
 700                 return;
 701
 702         priv->slave_node_guids[slave] = guid;
 703 }
 704 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
 705
 706 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
 707 {
 708         struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
 709
 710         if (!mlx4_is_master(dev))
 711                 return 0;
 712
 713         return priv->slave_node_guids[slave];
 714 }
 715 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
 716
 717 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
 718 {
 719         struct mlx4_priv *priv = mlx4_priv(dev);
 720         struct mlx4_slave_state *s_slave;
 721
 722         if (!mlx4_is_master(dev))
 723                 return 0;
 724
 725         s_slave = &priv->mfunc.master.slave_state[slave];
 726         return !!s_slave->active;
 727 }
 728 EXPORT_SYMBOL(mlx4_is_slave_active);
 729
 730 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
 731                                        struct mlx4_dev_cap *dev_cap,
 732                                        struct mlx4_init_hca_param *hca_param)
 733 {
 734         dev->caps.steering_mode = hca_param->steering_mode;
 735         if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
 736                 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
 737                 dev->caps.fs_log_max_ucast_qp_range_size =
 738                         dev_cap->fs_log_max_ucast_qp_range_size;
 739         } else
 740                 dev->caps.num_qp_per_mgm =
 741                         4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
 742
 743         mlx4_dbg(dev, "Steering mode is: %s\n",
 744                  mlx4_steering_mode_str(dev->caps.steering_mode));
 745 }
 746
 747 static int mlx4_slave_cap(struct mlx4_dev *dev)
 748 {
 749         int                        err;
 750         u32                        page_size;
 751         struct mlx4_dev_cap        dev_cap;
 752         struct mlx4_func_cap       func_cap;
 753         struct mlx4_init_hca_param hca_param;
 754         u8                         i;
 755
 756         memset(&hca_param, 0, sizeof(hca_param));
 757         err = mlx4_QUERY_HCA(dev, &hca_param);
 758         if (err) {
 759                 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
 760                 return err;
 761         }
 762
 763         /* fail if the hca has an unknown global capability
 764          * at this time global_caps should be always zeroed
 765          */
 766         if (hca_param.global_caps) {
 767                 mlx4_err(dev, "Unknown hca global capabilities\n");
 768                 return -ENOSYS;
 769         }
 770
 771         mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
 772
 773         dev->caps.hca_core_clock = hca_param.hca_core_clock;
 774
 775         memset(&dev_cap, 0, sizeof(dev_cap));
 776         dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
 777         err = mlx4_dev_cap(dev, &dev_cap);
 778         if (err) {
 779                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
 780                 return err;
 781         }
 782
 783         err = mlx4_QUERY_FW(dev);
 784         if (err)
 785                 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
 786
 787         page_size = ~dev->caps.page_size_cap + 1;
 788         mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
 789         if (page_size > PAGE_SIZE) {
 790                 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
 791                          page_size, PAGE_SIZE);
 792                 return -ENODEV;
 793         }
 794
 795         /* slave gets uar page size from QUERY_HCA fw command */
 796         dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
 797
 798         /* TODO: relax this assumption */
 799         if (dev->caps.uar_page_size != PAGE_SIZE) {
 800                 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
 801                          dev->caps.uar_page_size, PAGE_SIZE);
 802                 return -ENODEV;
 803         }
 804
 805         memset(&func_cap, 0, sizeof(func_cap));
 806         err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
 807         if (err) {
 808                 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
 809                          err);
 810                 return err;
 811         }
 812
 813         if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
 814             PF_CONTEXT_BEHAVIOUR_MASK) {
 815                 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
 816                          func_cap.pf_context_behaviour, PF_CONTEXT_BEHAVIOUR_MASK);
 817                 return -ENOSYS;
 818         }
 819
 820         dev->caps.num_ports             = func_cap.num_ports;
 821         dev->quotas.qp                  = func_cap.qp_quota;
 822         dev->quotas.srq                 = func_cap.srq_quota;
 823         dev->quotas.cq                  = func_cap.cq_quota;
 824         dev->quotas.mpt                 = func_cap.mpt_quota;
 825         dev->quotas.mtt                 = func_cap.mtt_quota;
 826         dev->caps.num_qps               = 1 << hca_param.log_num_qps;
 827         dev->caps.num_srqs              = 1 << hca_param.log_num_srqs;
 828         dev->caps.num_cqs               = 1 << hca_param.log_num_cqs;
 829         dev->caps.num_mpts              = 1 << hca_param.log_mpt_sz;
 830         dev->caps.num_eqs               = func_cap.max_eq;
 831         dev->caps.reserved_eqs          = func_cap.reserved_eq;
 832         dev->caps.reserved_lkey         = func_cap.reserved_lkey;
 833         dev->caps.num_pds               = MLX4_NUM_PDS;
 834         dev->caps.num_mgms              = 0;
 835         dev->caps.num_amgms             = 0;
 836
 837         if (dev->caps.num_ports > MLX4_MAX_PORTS) {
 838                 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
 839                          dev->caps.num_ports, MLX4_MAX_PORTS);
 840                 return -ENODEV;
 841         }
 842
 843         dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
 844         dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 845         dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 846         dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 847         dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
 848
 849         if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
 850             !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
 851             !dev->caps.qp0_qkey) {
 852                 err = -ENOMEM;
 853                 goto err_mem;
 854         }
 855
 856         for (i = 1; i <= dev->caps.num_ports; ++i) {
 857                 err = mlx4_QUERY_FUNC_CAP(dev, i, &func_cap);
 858                 if (err) {
 859                         mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
 860                                  i, err);
 861                         goto err_mem;
 862                 }
 863                 dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
 864                 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
 865                 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
 866                 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
 867                 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
 868                 dev->caps.port_mask[i] = dev->caps.port_type[i];
 869                 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
 870                 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
 871                                                     &dev->caps.gid_table_len[i],
 872                                                     &dev->caps.pkey_table_len[i]))
 873                         goto err_mem;
 874         }
 875
 876         if (dev->caps.uar_page_size * (dev->caps.num_uars -
 877                                        dev->caps.reserved_uars) >
 878                                        pci_resource_len(dev->persist->pdev,
 879                                                         2)) {
 880                 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
 881                          dev->caps.uar_page_size * dev->caps.num_uars,
 882                          (unsigned long long)
 883                          pci_resource_len(dev->persist->pdev, 2));
 884                 goto err_mem;
 885         }
 886
 887         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
 888                 dev->caps.eqe_size   = 64;
 889                 dev->caps.eqe_factor = 1;
 890         } else {
 891                 dev->caps.eqe_size   = 32;
 892                 dev->caps.eqe_factor = 0;
 893         }
 894
 895         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
 896                 dev->caps.cqe_size   = 64;
 897                 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
 898         } else {
 899                 dev->caps.cqe_size   = 32;
 900         }
 901
 902         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) {
 903                 dev->caps.eqe_size = hca_param.eqe_size;
 904                 dev->caps.eqe_factor = 0;
 905         }
 906
 907         if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) {
 908                 dev->caps.cqe_size = hca_param.cqe_size;
 909                 /* User still need to know when CQE > 32B */
 910                 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
 911         }
 912
 913         dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
 914         mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
 915
 916         slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
 917         mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
 918                  hca_param.rss_ip_frags ? "on" : "off");
 919
 920         if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
 921             dev->caps.bf_reg_size)
 922                 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP;
 923
 924         if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP)
 925                 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP;
 926
 927         return 0;
 928
 929 err_mem:
 930         kfree(dev->caps.qp0_qkey);
 931         kfree(dev->caps.qp0_tunnel);
 932         kfree(dev->caps.qp0_proxy);
 933         kfree(dev->caps.qp1_tunnel);
 934         kfree(dev->caps.qp1_proxy);
 935         dev->caps.qp0_qkey = NULL;
 936         dev->caps.qp0_tunnel = NULL;
 937         dev->caps.qp0_proxy = NULL;
 938         dev->caps.qp1_tunnel = NULL;
 939         dev->caps.qp1_proxy = NULL;
 940
 941         return err;
 942 }
 943
 944 static void mlx4_request_modules(struct mlx4_dev *dev)
 945 {
 946         int port;
 947         int has_ib_port = false;
 948         int has_eth_port = false;
 949 #define EN_DRV_NAME     "mlx4_en"
 950 #define IB_DRV_NAME     "mlx4_ib"
 951
 952         for (port = 1; port <= dev->caps.num_ports; port++) {
 953                 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
 954                         has_ib_port = true;
 955                 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
 956                         has_eth_port = true;
 957         }
 958
 959         if (has_eth_port)
 960                 request_module_nowait(EN_DRV_NAME);
 961         if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
 962                 request_module_nowait(IB_DRV_NAME);
 963 }
 964
 965 /*
 966  * Change the port configuration of the device.
 967  * Every user of this function must hold the port mutex.
 968  */
 969 int mlx4_change_port_types(struct mlx4_dev *dev,
 970                            enum mlx4_port_type *port_types)
 971 {
 972         int err = 0;
 973         int change = 0;
 974         int port;
 975
 976         for (port = 0; port <  dev->caps.num_ports; port++) {
 977                 /* Change the port type only if the new type is different
 978                  * from the current, and not set to Auto */
 979                 if (port_types[port] != dev->caps.port_type[port + 1])
 980                         change = 1;
 981         }
 982         if (change) {
 983                 mlx4_unregister_device(dev);
 984                 for (port = 1; port <= dev->caps.num_ports; port++) {
 985                         mlx4_CLOSE_PORT(dev, port);
 986                         dev->caps.port_type[port] = port_types[port - 1];
 987                         err = mlx4_SET_PORT(dev, port, -1);
 988                         if (err) {
 989                                 mlx4_err(dev, "Failed to set port %d, aborting\n",
 990                                          port);
 991                                 goto out;
 992                         }
 993                 }
 994                 mlx4_set_port_mask(dev);
 995                 err = mlx4_register_device(dev);
 996                 if (err) {
 997                         mlx4_err(dev, "Failed to register device\n");
 998                         goto out;
 999                 }
1000                 mlx4_request_modules(dev);
1001         }
1002
1003 out:
1004         return err;
1005 }
1006
1007 static ssize_t show_port_type(struct device *dev,
1008                               struct device_attribute *attr,
1009                               char *buf)
1010 {
1011         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1012                                                    port_attr);
1013         struct mlx4_dev *mdev = info->dev;
1014         char type[8];
1015
1016         sprintf(type, "%s",
1017                 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
1018                 "ib" : "eth");
1019         if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
1020                 sprintf(buf, "auto (%s)\n", type);
1021         else
1022                 sprintf(buf, "%s\n", type);
1023
1024         return strlen(buf);
1025 }
1026
1027 static ssize_t set_port_type(struct device *dev,
1028                              struct device_attribute *attr,
1029                              const char *buf, size_t count)
1030 {
1031         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1032                                                    port_attr);
1033         struct mlx4_dev *mdev = info->dev;
1034         struct mlx4_priv *priv = mlx4_priv(mdev);
1035         enum mlx4_port_type types[MLX4_MAX_PORTS];
1036         enum mlx4_port_type new_types[MLX4_MAX_PORTS];
1037         static DEFINE_MUTEX(set_port_type_mutex);
1038         int i;
1039         int err = 0;
1040
1041         mutex_lock(&set_port_type_mutex);
1042
1043         if (!strcmp(buf, "ib\n"))
1044                 info->tmp_type = MLX4_PORT_TYPE_IB;
1045         else if (!strcmp(buf, "eth\n"))
1046                 info->tmp_type = MLX4_PORT_TYPE_ETH;
1047         else if (!strcmp(buf, "auto\n"))
1048                 info->tmp_type = MLX4_PORT_TYPE_AUTO;
1049         else {
1050                 mlx4_err(mdev, "%s is not supported port type\n", buf);
1051                 err = -EINVAL;
1052                 goto err_out;
1053         }
1054
1055         mlx4_stop_sense(mdev);
1056         mutex_lock(&priv->port_mutex);
1057         /* Possible type is always the one that was delivered */
1058         mdev->caps.possible_type[info->port] = info->tmp_type;
1059
1060         for (i = 0; i < mdev->caps.num_ports; i++) {
1061                 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
1062                                         mdev->caps.possible_type[i+1];
1063                 if (types[i] == MLX4_PORT_TYPE_AUTO)
1064                         types[i] = mdev->caps.port_type[i+1];
1065         }
1066
1067         if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
1068             !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
1069                 for (i = 1; i <= mdev->caps.num_ports; i++) {
1070                         if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
1071                                 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
1072                                 err = -EINVAL;
1073                         }
1074                 }
1075         }
1076         if (err) {
1077                 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
1078                 goto out;
1079         }
1080
1081         mlx4_do_sense_ports(mdev, new_types, types);
1082
1083         err = mlx4_check_port_params(mdev, new_types);
1084         if (err)
1085                 goto out;
1086
1087         /* We are about to apply the changes after the configuration
1088          * was verified, no need to remember the temporary types
1089          * any more */
1090         for (i = 0; i < mdev->caps.num_ports; i++)
1091                 priv->port[i + 1].tmp_type = 0;
1092
1093         err = mlx4_change_port_types(mdev, new_types);
1094
1095 out:
1096         mlx4_start_sense(mdev);
1097         mutex_unlock(&priv->port_mutex);
1098 err_out:
1099         mutex_unlock(&set_port_type_mutex);
1100
1101         return err ? err : count;
1102 }
1103
1104 enum ibta_mtu {
1105         IB_MTU_256  = 1,
1106         IB_MTU_512  = 2,
1107         IB_MTU_1024 = 3,
1108         IB_MTU_2048 = 4,
1109         IB_MTU_4096 = 5
1110 };
1111
1112 static inline int int_to_ibta_mtu(int mtu)
1113 {
1114         switch (mtu) {
1115         case 256:  return IB_MTU_256;
1116         case 512:  return IB_MTU_512;
1117         case 1024: return IB_MTU_1024;
1118         case 2048: return IB_MTU_2048;
1119         case 4096: return IB_MTU_4096;
1120         default: return -1;
1121         }
1122 }
1123
1124 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
1125 {
1126         switch (mtu) {
1127         case IB_MTU_256:  return  256;
1128         case IB_MTU_512:  return  512;
1129         case IB_MTU_1024: return 1024;
1130         case IB_MTU_2048: return 2048;
1131         case IB_MTU_4096: return 4096;
1132         default: return -1;
1133         }
1134 }
1135
1136 static ssize_t show_port_ib_mtu(struct device *dev,
1137                              struct device_attribute *attr,
1138                              char *buf)
1139 {
1140         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1141                                                    port_mtu_attr);
1142         struct mlx4_dev *mdev = info->dev;
1143
1144         if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
1145                 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1146
1147         sprintf(buf, "%d\n",
1148                         ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
1149         return strlen(buf);
1150 }
1151
1152 static ssize_t set_port_ib_mtu(struct device *dev,
1153                              struct device_attribute *attr,
1154                              const char *buf, size_t count)
1155 {
1156         struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1157                                                    port_mtu_attr);
1158         struct mlx4_dev *mdev = info->dev;
1159         struct mlx4_priv *priv = mlx4_priv(mdev);
1160         int err, port, mtu, ibta_mtu = -1;
1161
1162         if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
1163                 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1164                 return -EINVAL;
1165         }
1166
1167         err = kstrtoint(buf, 0, &mtu);
1168         if (!err)
1169                 ibta_mtu = int_to_ibta_mtu(mtu);
1170
1171         if (err || ibta_mtu < 0) {
1172                 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
1173                 return -EINVAL;
1174         }
1175
1176         mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
1177
1178         mlx4_stop_sense(mdev);
1179         mutex_lock(&priv->port_mutex);
1180         mlx4_unregister_device(mdev);
1181         for (port = 1; port <= mdev->caps.num_ports; port++) {
1182                 mlx4_CLOSE_PORT(mdev, port);
1183                 err = mlx4_SET_PORT(mdev, port, -1);
1184                 if (err) {
1185                         mlx4_err(mdev, "Failed to set port %d, aborting\n",
1186                                  port);
1187                         goto err_set_port;
1188                 }
1189         }
1190         err = mlx4_register_device(mdev);
1191 err_set_port:
1192         mutex_unlock(&priv->port_mutex);
1193         mlx4_start_sense(mdev);
1194         return err ? err : count;
1195 }
1196
1197 int mlx4_bond(struct mlx4_dev *dev)
1198 {
1199         int ret = 0;
1200         struct mlx4_priv *priv = mlx4_priv(dev);
1201
1202         mutex_lock(&priv->bond_mutex);
1203
1204         if (!mlx4_is_bonded(dev))
1205                 ret = mlx4_do_bond(dev, true);
1206         else
1207                 ret = 0;
1208
1209         mutex_unlock(&priv->bond_mutex);
1210         if (ret)
1211                 mlx4_err(dev, "Failed to bond device: %d\n", ret);
1212         else
1213                 mlx4_dbg(dev, "Device is bonded\n");
1214         return ret;
1215 }
1216 EXPORT_SYMBOL_GPL(mlx4_bond);
1217
1218 int mlx4_unbond(struct mlx4_dev *dev)
1219 {
1220         int ret = 0;
1221         struct mlx4_priv *priv = mlx4_priv(dev);
1222
1223         mutex_lock(&priv->bond_mutex);
1224
1225         if (mlx4_is_bonded(dev))
1226                 ret = mlx4_do_bond(dev, false);
1227
1228         mutex_unlock(&priv->bond_mutex);
1229         if (ret)
1230                 mlx4_err(dev, "Failed to unbond device: %d\n", ret);
1231         else
1232                 mlx4_dbg(dev, "Device is unbonded\n");
1233         return ret;
1234 }
1235 EXPORT_SYMBOL_GPL(mlx4_unbond);
1236
1237
1238 int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p)
1239 {
1240         u8 port1 = v2p->port1;
1241         u8 port2 = v2p->port2;
1242         struct mlx4_priv *priv = mlx4_priv(dev);
1243         int err;
1244
1245         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
1246                 return -ENOTSUPP;
1247
1248         mutex_lock(&priv->bond_mutex);
1249
1250         /* zero means keep current mapping for this port */
1251         if (port1 == 0)
1252                 port1 = priv->v2p.port1;
1253         if (port2 == 0)
1254                 port2 = priv->v2p.port2;
1255
1256         if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) ||
1257             (port2 < 1) || (port2 > MLX4_MAX_PORTS) ||
1258             (port1 == 2 && port2 == 1)) {
1259                 /* besides boundary checks cross mapping makes
1260                  * no sense and therefore not allowed */
1261                 err = -EINVAL;
1262         } else if ((port1 == priv->v2p.port1) &&
1263                  (port2 == priv->v2p.port2)) {
1264                 err = 0;
1265         } else {
1266                 err = mlx4_virt2phy_port_map(dev, port1, port2);
1267                 if (!err) {
1268                         mlx4_dbg(dev, "port map changed: [%d][%d]\n",
1269                                  port1, port2);
1270                         priv->v2p.port1 = port1;
1271                         priv->v2p.port2 = port2;
1272                 } else {
1273                         mlx4_err(dev, "Failed to change port mape: %d\n", err);
1274                 }
1275         }
1276
1277         mutex_unlock(&priv->bond_mutex);
1278         return err;
1279 }
1280 EXPORT_SYMBOL_GPL(mlx4_port_map_set);
1281
1282 static int mlx4_load_fw(struct mlx4_dev *dev)
1283 {
1284         struct mlx4_priv *priv = mlx4_priv(dev);
1285         int err;
1286
1287         priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1288                                          GFP_HIGHUSER | __GFP_NOWARN, 0);
1289         if (!priv->fw.fw_icm) {
1290                 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1291                 return -ENOMEM;
1292         }
1293
1294         err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1295         if (err) {
1296                 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1297                 goto err_free;
1298         }
1299
1300         err = mlx4_RUN_FW(dev);
1301         if (err) {
1302                 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1303                 goto err_unmap_fa;
1304         }
1305
1306         return 0;
1307
1308 err_unmap_fa:
1309         mlx4_UNMAP_FA(dev);
1310
1311 err_free:
1312         mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1313         return err;
1314 }
1315
1316 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1317                                 int cmpt_entry_sz)
1318 {
1319         struct mlx4_priv *priv = mlx4_priv(dev);
1320         int err;
1321         int num_eqs;
1322
1323         err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1324                                   cmpt_base +
1325                                   ((u64) (MLX4_CMPT_TYPE_QP *
1326                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1327                                   cmpt_entry_sz, dev->caps.num_qps,
1328                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1329                                   0, 0);
1330         if (err)
1331                 goto err;
1332
1333         err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1334                                   cmpt_base +
1335                                   ((u64) (MLX4_CMPT_TYPE_SRQ *
1336                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1337                                   cmpt_entry_sz, dev->caps.num_srqs,
1338                                   dev->caps.reserved_srqs, 0, 0);
1339         if (err)
1340                 goto err_qp;
1341
1342         err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1343                                   cmpt_base +
1344                                   ((u64) (MLX4_CMPT_TYPE_CQ *
1345                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1346                                   cmpt_entry_sz, dev->caps.num_cqs,
1347                                   dev->caps.reserved_cqs, 0, 0);
1348         if (err)
1349                 goto err_srq;
1350
1351         num_eqs = dev->phys_caps.num_phys_eqs;
1352         err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1353                                   cmpt_base +
1354                                   ((u64) (MLX4_CMPT_TYPE_EQ *
1355                                           cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1356                                   cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1357         if (err)
1358                 goto err_cq;
1359
1360         return 0;
1361
1362 err_cq:
1363         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1364
1365 err_srq:
1366         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1367
1368 err_qp:
1369         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1370
1371 err:
1372         return err;
1373 }
1374
1375 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1376                          struct mlx4_init_hca_param *init_hca, u64 icm_size)
1377 {
1378         struct mlx4_priv *priv = mlx4_priv(dev);
1379         u64 aux_pages;
1380         int num_eqs;
1381         int err;
1382
1383         err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1384         if (err) {
1385                 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1386                 return err;
1387         }
1388
1389         mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1390                  (unsigned long long) icm_size >> 10,
1391                  (unsigned long long) aux_pages << 2);
1392
1393         priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1394                                           GFP_HIGHUSER | __GFP_NOWARN, 0);
1395         if (!priv->fw.aux_icm) {
1396                 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1397                 return -ENOMEM;
1398         }
1399
1400         err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1401         if (err) {
1402                 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1403                 goto err_free_aux;
1404         }
1405
1406         err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1407         if (err) {
1408                 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1409                 goto err_unmap_aux;
1410         }
1411
1412
1413         num_eqs = dev->phys_caps.num_phys_eqs;
1414         err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1415                                   init_hca->eqc_base, dev_cap->eqc_entry_sz,
1416                                   num_eqs, num_eqs, 0, 0);
1417         if (err) {
1418                 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1419                 goto err_unmap_cmpt;
1420         }
1421
1422         /*
1423          * Reserved MTT entries must be aligned up to a cacheline
1424          * boundary, since the FW will write to them, while the driver
1425          * writes to all other MTT entries. (The variable
1426          * dev->caps.mtt_entry_sz below is really the MTT segment
1427          * size, not the raw entry size)
1428          */
1429         dev->caps.reserved_mtts =
1430                 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1431                       dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1432
1433         err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1434                                   init_hca->mtt_base,
1435                                   dev->caps.mtt_entry_sz,
1436                                   dev->caps.num_mtts,
1437                                   dev->caps.reserved_mtts, 1, 0);
1438         if (err) {
1439                 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1440                 goto err_unmap_eq;
1441         }
1442
1443         err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1444                                   init_hca->dmpt_base,
1445                                   dev_cap->dmpt_entry_sz,
1446                                   dev->caps.num_mpts,
1447                                   dev->caps.reserved_mrws, 1, 1);
1448         if (err) {
1449                 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1450                 goto err_unmap_mtt;
1451         }
1452
1453         err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1454                                   init_hca->qpc_base,
1455                                   dev_cap->qpc_entry_sz,
1456                                   dev->caps.num_qps,
1457                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1458                                   0, 0);
1459         if (err) {
1460                 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1461                 goto err_unmap_dmpt;
1462         }
1463
1464         err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1465                                   init_hca->auxc_base,
1466                                   dev_cap->aux_entry_sz,
1467                                   dev->caps.num_qps,
1468                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1469                                   0, 0);
1470         if (err) {
1471                 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1472                 goto err_unmap_qp;
1473         }
1474
1475         err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1476                                   init_hca->altc_base,
1477                                   dev_cap->altc_entry_sz,
1478                                   dev->caps.num_qps,
1479                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1480                                   0, 0);
1481         if (err) {
1482                 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1483                 goto err_unmap_auxc;
1484         }
1485
1486         err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1487                                   init_hca->rdmarc_base,
1488                                   dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1489                                   dev->caps.num_qps,
1490                                   dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1491                                   0, 0);
1492         if (err) {
1493                 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1494                 goto err_unmap_altc;
1495         }
1496
1497         err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1498                                   init_hca->cqc_base,
1499                                   dev_cap->cqc_entry_sz,
1500                                   dev->caps.num_cqs,
1501                                   dev->caps.reserved_cqs, 0, 0);
1502         if (err) {
1503                 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1504                 goto err_unmap_rdmarc;
1505         }
1506
1507         err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1508                                   init_hca->srqc_base,
1509                                   dev_cap->srq_entry_sz,
1510                                   dev->caps.num_srqs,
1511                                   dev->caps.reserved_srqs, 0, 0);
1512         if (err) {
1513                 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1514                 goto err_unmap_cq;
1515         }
1516
1517         /*
1518          * For flow steering device managed mode it is required to use
1519          * mlx4_init_icm_table. For B0 steering mode it's not strictly
1520          * required, but for simplicity just map the whole multicast
1521          * group table now.  The table isn't very big and it's a lot
1522          * easier than trying to track ref counts.
1523          */
1524         err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1525                                   init_hca->mc_base,
1526                                   mlx4_get_mgm_entry_size(dev),
1527                                   dev->caps.num_mgms + dev->caps.num_amgms,
1528                                   dev->caps.num_mgms + dev->caps.num_amgms,
1529                                   0, 0);
1530         if (err) {
1531                 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1532                 goto err_unmap_srq;
1533         }
1534
1535         return 0;
1536
1537 err_unmap_srq:
1538         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1539
1540 err_unmap_cq:
1541         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1542
1543 err_unmap_rdmarc:
1544         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1545
1546 err_unmap_altc:
1547         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1548
1549 err_unmap_auxc:
1550         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1551
1552 err_unmap_qp:
1553         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1554
1555 err_unmap_dmpt:
1556         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1557
1558 err_unmap_mtt:
1559         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1560
1561 err_unmap_eq:
1562         mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1563
1564 err_unmap_cmpt:
1565         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1566         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1567         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1568         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1569
1570 err_unmap_aux:
1571         mlx4_UNMAP_ICM_AUX(dev);
1572
1573 err_free_aux:
1574         mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1575
1576         return err;
1577 }
1578
1579 static void mlx4_free_icms(struct mlx4_dev *dev)
1580 {
1581         struct mlx4_priv *priv = mlx4_priv(dev);
1582
1583         mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1584         mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1585         mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1586         mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1587         mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1588         mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1589         mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1590         mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1591         mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1592         mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1593         mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1594         mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1595         mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1596         mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1597
1598         mlx4_UNMAP_ICM_AUX(dev);
1599         mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1600 }
1601
1602 static void mlx4_slave_exit(struct mlx4_dev *dev)
1603 {
1604         struct mlx4_priv *priv = mlx4_priv(dev);
1605
1606         mutex_lock(&priv->cmd.slave_cmd_mutex);
1607         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP,
1608                           MLX4_COMM_TIME))
1609                 mlx4_warn(dev, "Failed to close slave function\n");
1610         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1611 }
1612
1613 static int map_bf_area(struct mlx4_dev *dev)
1614 {
1615         struct mlx4_priv *priv = mlx4_priv(dev);
1616         resource_size_t bf_start;
1617         resource_size_t bf_len;
1618         int err = 0;
1619
1620         if (!dev->caps.bf_reg_size)
1621                 return -ENXIO;
1622
1623         bf_start = pci_resource_start(dev->persist->pdev, 2) +
1624                         (dev->caps.num_uars << PAGE_SHIFT);
1625         bf_len = pci_resource_len(dev->persist->pdev, 2) -
1626                         (dev->caps.num_uars << PAGE_SHIFT);
1627         priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1628         if (!priv->bf_mapping)
1629                 err = -ENOMEM;
1630
1631         return err;
1632 }
1633
1634 static void unmap_bf_area(struct mlx4_dev *dev)
1635 {
1636         if (mlx4_priv(dev)->bf_mapping)
1637                 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1638 }
1639
1640 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1641 {
1642         u32 clockhi, clocklo, clockhi1;
1643         cycle_t cycles;
1644         int i;
1645         struct mlx4_priv *priv = mlx4_priv(dev);
1646
1647         for (i = 0; i < 10; i++) {
1648                 clockhi = swab32(readl(priv->clock_mapping));
1649                 clocklo = swab32(readl(priv->clock_mapping + 4));
1650                 clockhi1 = swab32(readl(priv->clock_mapping));
1651                 if (clockhi == clockhi1)
1652                         break;
1653         }
1654
1655         cycles = (u64) clockhi << 32 | (u64) clocklo;
1656
1657         return cycles;
1658 }
1659 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1660
1661
1662 static int map_internal_clock(struct mlx4_dev *dev)
1663 {
1664         struct mlx4_priv *priv = mlx4_priv(dev);
1665
1666         priv->clock_mapping =
1667                 ioremap(pci_resource_start(dev->persist->pdev,
1668                                            priv->fw.clock_bar) +
1669                         priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1670
1671         if (!priv->clock_mapping)
1672                 return -ENOMEM;
1673
1674         return 0;
1675 }
1676
1677 static void unmap_internal_clock(struct mlx4_dev *dev)
1678 {
1679         struct mlx4_priv *priv = mlx4_priv(dev);
1680
1681         if (priv->clock_mapping)
1682                 iounmap(priv->clock_mapping);
1683 }
1684
1685 static void mlx4_close_hca(struct mlx4_dev *dev)
1686 {
1687         unmap_internal_clock(dev);
1688         unmap_bf_area(dev);
1689         if (mlx4_is_slave(dev))
1690                 mlx4_slave_exit(dev);
1691         else {
1692                 mlx4_CLOSE_HCA(dev, 0);
1693                 mlx4_free_icms(dev);
1694         }
1695 }
1696
1697 static void mlx4_close_fw(struct mlx4_dev *dev)
1698 {
1699         if (!mlx4_is_slave(dev)) {
1700                 mlx4_UNMAP_FA(dev);
1701                 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1702         }
1703 }
1704
1705 static int mlx4_comm_check_offline(struct mlx4_dev *dev)
1706 {
1707 #define COMM_CHAN_OFFLINE_OFFSET 0x09
1708
1709         u32 comm_flags;
1710         u32 offline_bit;
1711         unsigned long end;
1712         struct mlx4_priv *priv = mlx4_priv(dev);
1713
1714         end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies;
1715         while (time_before(jiffies, end)) {
1716                 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm +
1717                                           MLX4_COMM_CHAN_FLAGS));
1718                 offline_bit = (comm_flags &
1719                                (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
1720                 if (!offline_bit)
1721                         return 0;
1722                 /* There are cases as part of AER/Reset flow that PF needs
1723                  * around 100 msec to load. We therefore sleep for 100 msec
1724                  * to allow other tasks to make use of that CPU during this
1725                  * time interval.
1726                  */
1727                 msleep(100);
1728         }
1729         mlx4_err(dev, "Communication channel is offline.\n");
1730         return -EIO;
1731 }
1732
1733 static void mlx4_reset_vf_support(struct mlx4_dev *dev)
1734 {
1735 #define COMM_CHAN_RST_OFFSET 0x1e
1736
1737         struct mlx4_priv *priv = mlx4_priv(dev);
1738         u32 comm_rst;
1739         u32 comm_caps;
1740
1741         comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm +
1742                                  MLX4_COMM_CHAN_CAPS));
1743         comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET));
1744
1745         if (comm_rst)
1746                 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET;
1747 }
1748
1749 static int mlx4_init_slave(struct mlx4_dev *dev)
1750 {
1751         struct mlx4_priv *priv = mlx4_priv(dev);
1752         u64 dma = (u64) priv->mfunc.vhcr_dma;
1753         int ret_from_reset = 0;
1754         u32 slave_read;
1755         u32 cmd_channel_ver;
1756
1757         if (atomic_read(&pf_loading)) {
1758                 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1759                 return -EPROBE_DEFER;
1760         }
1761
1762         mutex_lock(&priv->cmd.slave_cmd_mutex);
1763         priv->cmd.max_cmds = 1;
1764         if (mlx4_comm_check_offline(dev)) {
1765                 mlx4_err(dev, "PF is not responsive, skipping initialization\n");
1766                 goto err_offline;
1767         }
1768
1769         mlx4_reset_vf_support(dev);
1770         mlx4_warn(dev, "Sending reset\n");
1771         ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1772                                        MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME);
1773         /* if we are in the middle of flr the slave will try
1774          * NUM_OF_RESET_RETRIES times before leaving.*/
1775         if (ret_from_reset) {
1776                 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1777                         mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
1778                         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1779                         return -EPROBE_DEFER;
1780                 } else
1781                         goto err;
1782         }
1783
1784         /* check the driver version - the slave I/F revision
1785          * must match the master's */
1786         slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1787         cmd_channel_ver = mlx4_comm_get_version();
1788
1789         if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1790                 MLX4_COMM_GET_IF_REV(slave_read)) {
1791                 mlx4_err(dev, "slave driver version is not supported by the master\n");
1792                 goto err;
1793         }
1794
1795         mlx4_warn(dev, "Sending vhcr0\n");
1796         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1797                              MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1798                 goto err;
1799         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1800                              MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1801                 goto err;
1802         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1803                              MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1804                 goto err;
1805         if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma,
1806                           MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1807                 goto err;
1808
1809         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1810         return 0;
1811
1812 err:
1813         mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0);
1814 err_offline:
1815         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1816         return -EIO;
1817 }
1818
1819 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1820 {
1821         int i;
1822
1823         for (i = 1; i <= dev->caps.num_ports; i++) {
1824                 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
1825                         dev->caps.gid_table_len[i] =
1826                                 mlx4_get_slave_num_gids(dev, 0, i);
1827                 else
1828                         dev->caps.gid_table_len[i] = 1;
1829                 dev->caps.pkey_table_len[i] =
1830                         dev->phys_caps.pkey_phys_table_len[i] - 1;
1831         }
1832 }
1833
1834 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1835 {
1836         int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1837
1838         for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1839               i++) {
1840                 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1841                         break;
1842         }
1843
1844         return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1845 }
1846
1847 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)
1848 {
1849         switch (dmfs_high_steer_mode) {
1850         case MLX4_STEERING_DMFS_A0_DEFAULT:
1851                 return "default performance";
1852
1853         case MLX4_STEERING_DMFS_A0_DYNAMIC:
1854                 return "dynamic hybrid mode";
1855
1856         case MLX4_STEERING_DMFS_A0_STATIC:
1857                 return "performance optimized for limited rule configuration (static)";
1858
1859         case MLX4_STEERING_DMFS_A0_DISABLE:
1860                 return "disabled performance optimized steering";
1861
1862         case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED:
1863                 return "performance optimized steering not supported";
1864
1865         default:
1866                 return "Unrecognized mode";
1867         }
1868 }
1869
1870 #define MLX4_DMFS_A0_STEERING                   (1UL << 2)
1871
1872 static void choose_steering_mode(struct mlx4_dev *dev,
1873                                  struct mlx4_dev_cap *dev_cap)
1874 {
1875         if (mlx4_log_num_mgm_entry_size <= 0) {
1876                 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) {
1877                         if (dev->caps.dmfs_high_steer_mode ==
1878                             MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1879                                 mlx4_err(dev, "DMFS high rate mode not supported\n");
1880                         else
1881                                 dev->caps.dmfs_high_steer_mode =
1882                                         MLX4_STEERING_DMFS_A0_STATIC;
1883                 }
1884         }
1885
1886         if (mlx4_log_num_mgm_entry_size <= 0 &&
1887             dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1888             (!mlx4_is_mfunc(dev) ||
1889              (dev_cap->fs_max_num_qp_per_entry >=
1890              (dev->persist->num_vfs + 1))) &&
1891             choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1892                 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1893                 dev->oper_log_mgm_entry_size =
1894                         choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1895                 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1896                 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1897                 dev->caps.fs_log_max_ucast_qp_range_size =
1898                         dev_cap->fs_log_max_ucast_qp_range_size;
1899         } else {
1900                 if (dev->caps.dmfs_high_steer_mode !=
1901                     MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1902                         dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE;
1903                 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1904                     dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1905                         dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1906                 else {
1907                         dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1908
1909                         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1910                             dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1911                                 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
1912                 }
1913                 dev->oper_log_mgm_entry_size =
1914                         mlx4_log_num_mgm_entry_size > 0 ?
1915                         mlx4_log_num_mgm_entry_size :
1916                         MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1917                 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1918         }
1919         mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
1920                  mlx4_steering_mode_str(dev->caps.steering_mode),
1921                  dev->oper_log_mgm_entry_size,
1922                  mlx4_log_num_mgm_entry_size);
1923 }
1924
1925 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
1926                                        struct mlx4_dev_cap *dev_cap)
1927 {
1928         if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
1929             dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1930                 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
1931         else
1932                 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
1933
1934         mlx4_dbg(dev, "Tunneling offload mode is: %s\n",  (dev->caps.tunnel_offload_mode
1935                  == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
1936 }
1937
1938 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev)
1939 {
1940         int i;
1941         struct mlx4_port_cap port_cap;
1942
1943         if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1944                 return -EINVAL;
1945
1946         for (i = 1; i <= dev->caps.num_ports; i++) {
1947                 if (mlx4_dev_port(dev, i, &port_cap)) {
1948                         mlx4_err(dev,
1949                                  "QUERY_DEV_CAP command failed, can't veify DMFS high rate steering.\n");
1950                 } else if ((dev->caps.dmfs_high_steer_mode !=
1951                             MLX4_STEERING_DMFS_A0_DEFAULT) &&
1952                            (port_cap.dmfs_optimized_state ==
1953                             !!(dev->caps.dmfs_high_steer_mode ==
1954                             MLX4_STEERING_DMFS_A0_DISABLE))) {
1955                         mlx4_err(dev,
1956                                  "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n",
1957                                  dmfs_high_rate_steering_mode_str(
1958                                         dev->caps.dmfs_high_steer_mode),
1959                                  (port_cap.dmfs_optimized_state ?
1960                                         "enabled" : "disabled"));
1961                 }
1962         }
1963
1964         return 0;
1965 }
1966
1967 static int mlx4_init_fw(struct mlx4_dev *dev)
1968 {
1969         struct mlx4_mod_stat_cfg   mlx4_cfg;
1970         int err = 0;
1971
1972         if (!mlx4_is_slave(dev)) {
1973                 err = mlx4_QUERY_FW(dev);
1974                 if (err) {
1975                         if (err == -EACCES)
1976                                 mlx4_info(dev, "non-primary physical function, skipping\n");
1977                         else
1978                                 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
1979                         return err;
1980                 }
1981
1982                 err = mlx4_load_fw(dev);
1983                 if (err) {
1984                         mlx4_err(dev, "Failed to start FW, aborting\n");
1985                         return err;
1986                 }
1987
1988                 mlx4_cfg.log_pg_sz_m = 1;
1989                 mlx4_cfg.log_pg_sz = 0;
1990                 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1991                 if (err)
1992                         mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1993         }
1994
1995         return err;
1996 }
1997
1998 static int mlx4_init_hca(struct mlx4_dev *dev)
1999 {
2000         struct mlx4_priv          *priv = mlx4_priv(dev);
2001         struct mlx4_adapter        adapter;
2002         struct mlx4_dev_cap        dev_cap;
2003         struct mlx4_profile        profile;
2004         struct mlx4_init_hca_param init_hca;
2005         u64 icm_size;
2006         struct mlx4_config_dev_params params;
2007         int err;
2008
2009         if (!mlx4_is_slave(dev)) {
2010                 err = mlx4_dev_cap(dev, &dev_cap);
2011                 if (err) {
2012                         mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
2013                         return err;
2014                 }
2015
2016                 choose_steering_mode(dev, &dev_cap);
2017                 choose_tunnel_offload_mode(dev, &dev_cap);
2018
2019                 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC &&
2020                     mlx4_is_master(dev))
2021                         dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC;
2022
2023                 err = mlx4_get_phys_port_id(dev);
2024                 if (err)
2025                         mlx4_err(dev, "Fail to get physical port id\n");
2026
2027                 if (mlx4_is_master(dev))
2028                         mlx4_parav_master_pf_caps(dev);
2029
2030                 if (mlx4_low_memory_profile()) {
2031                         mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
2032                         profile = low_mem_profile;
2033                 } else {
2034                         profile = default_profile;
2035                 }
2036                 if (dev->caps.steering_mode ==
2037                     MLX4_STEERING_MODE_DEVICE_MANAGED)
2038                         profile.num_mcg = MLX4_FS_NUM_MCG;
2039
2040                 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
2041                                              &init_hca);
2042                 if ((long long) icm_size < 0) {
2043                         err = icm_size;
2044                         return err;
2045                 }
2046
2047                 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
2048
2049                 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
2050                 init_hca.uar_page_sz = PAGE_SHIFT - 12;
2051                 init_hca.mw_enabled = 0;
2052                 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2053                     dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2054                         init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
2055
2056                 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
2057                 if (err)
2058                         return err;
2059
2060                 err = mlx4_INIT_HCA(dev, &init_hca);
2061                 if (err) {
2062                         mlx4_err(dev, "INIT_HCA command failed, aborting\n");
2063                         goto err_free_icm;
2064                 }
2065
2066                 if (dev_cap.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
2067                         err = mlx4_query_func(dev, &dev_cap);
2068                         if (err < 0) {
2069                                 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n");
2070                                 goto err_close;
2071                         } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) {
2072                                 dev->caps.num_eqs = dev_cap.max_eqs;
2073                                 dev->caps.reserved_eqs = dev_cap.reserved_eqs;
2074                                 dev->caps.reserved_uars = dev_cap.reserved_uars;
2075                         }
2076                 }
2077
2078                 /*
2079                  * If TS is supported by FW
2080                  * read HCA frequency by QUERY_HCA command
2081                  */
2082                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
2083                         memset(&init_hca, 0, sizeof(init_hca));
2084                         err = mlx4_QUERY_HCA(dev, &init_hca);
2085                         if (err) {
2086                                 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
2087                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2088                         } else {
2089                                 dev->caps.hca_core_clock =
2090                                         init_hca.hca_core_clock;
2091                         }
2092
2093                         /* In case we got HCA frequency 0 - disable timestamping
2094                          * to avoid dividing by zero
2095                          */
2096                         if (!dev->caps.hca_core_clock) {
2097                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2098                                 mlx4_err(dev,
2099                                          "HCA frequency is 0 - timestamping is not supported\n");
2100                         } else if (map_internal_clock(dev)) {
2101                                 /*
2102                                  * Map internal clock,
2103                                  * in case of failure disable timestamping
2104                                  */
2105                                 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2106                                 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
2107                         }
2108                 }
2109
2110                 if (dev->caps.dmfs_high_steer_mode !=
2111                     MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) {
2112                         if (mlx4_validate_optimized_steering(dev))
2113                                 mlx4_warn(dev, "Optimized steering validation failed\n");
2114
2115                         if (dev->caps.dmfs_high_steer_mode ==
2116                             MLX4_STEERING_DMFS_A0_DISABLE) {
2117                                 dev->caps.dmfs_high_rate_qpn_base =
2118                                         dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
2119                                 dev->caps.dmfs_high_rate_qpn_range =
2120                                         MLX4_A0_STEERING_TABLE_SIZE;
2121                         }
2122
2123                         mlx4_dbg(dev, "DMFS high rate steer mode is: %s\n",
2124                                  dmfs_high_rate_steering_mode_str(
2125                                         dev->caps.dmfs_high_steer_mode));
2126                 }
2127         } else {
2128                 err = mlx4_init_slave(dev);
2129                 if (err) {
2130                         if (err != -EPROBE_DEFER)
2131                                 mlx4_err(dev, "Failed to initialize slave\n");
2132                         return err;
2133                 }
2134
2135                 err = mlx4_slave_cap(dev);
2136                 if (err) {
2137                         mlx4_err(dev, "Failed to obtain slave caps\n");
2138                         goto err_close;
2139                 }
2140         }
2141
2142         if (map_bf_area(dev))
2143                 mlx4_dbg(dev, "Failed to map blue flame area\n");
2144
2145         /*Only the master set the ports, all the rest got it from it.*/
2146         if (!mlx4_is_slave(dev))
2147                 mlx4_set_port_mask(dev);
2148
2149         err = mlx4_QUERY_ADAPTER(dev, &adapter);
2150         if (err) {
2151                 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
2152                 goto unmap_bf;
2153         }
2154
2155         /* Query CONFIG_DEV parameters */
2156         err = mlx4_config_dev_retrieval(dev, &params);
2157         if (err && err != -ENOTSUPP) {
2158                 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n");
2159         } else if (!err) {
2160                 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1;
2161                 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2;
2162         }
2163         priv->eq_table.inta_pin = adapter.inta_pin;
2164         memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
2165
2166         return 0;
2167
2168 unmap_bf:
2169         unmap_internal_clock(dev);
2170         unmap_bf_area(dev);
2171
2172         if (mlx4_is_slave(dev)) {
2173                 kfree(dev->caps.qp0_qkey);
2174                 kfree(dev->caps.qp0_tunnel);
2175                 kfree(dev->caps.qp0_proxy);
2176                 kfree(dev->caps.qp1_tunnel);
2177                 kfree(dev->caps.qp1_proxy);
2178         }
2179
2180 err_close:
2181         if (mlx4_is_slave(dev))
2182                 mlx4_slave_exit(dev);
2183         else
2184                 mlx4_CLOSE_HCA(dev, 0);
2185
2186 err_free_icm:
2187         if (!mlx4_is_slave(dev))
2188                 mlx4_free_icms(dev);
2189
2190         return err;
2191 }
2192
2193 static int mlx4_init_counters_table(struct mlx4_dev *dev)
2194 {
2195         struct mlx4_priv *priv = mlx4_priv(dev);
2196         int nent;
2197
2198         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2199                 return -ENOENT;
2200
2201         nent = dev->caps.max_counters;
2202         return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
2203 }
2204
2205 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
2206 {
2207         mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
2208 }
2209
2210 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2211 {
2212         struct mlx4_priv *priv = mlx4_priv(dev);
2213
2214         if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2215                 return -ENOENT;
2216
2217         *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
2218         if (*idx == -1)
2219                 return -ENOMEM;
2220
2221         return 0;
2222 }
2223
2224 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2225 {
2226         u64 out_param;
2227         int err;
2228
2229         if (mlx4_is_mfunc(dev)) {
2230                 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
2231                                    RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
2232                                    MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
2233                 if (!err)
2234                         *idx = get_param_l(&out_param);
2235
2236                 return err;
2237         }
2238         return __mlx4_counter_alloc(dev, idx);
2239 }
2240 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
2241
2242 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2243 {
2244         mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
2245         return;
2246 }
2247
2248 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2249 {
2250         u64 in_param = 0;
2251
2252         if (mlx4_is_mfunc(dev)) {
2253                 set_param_l(&in_param, idx);
2254                 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
2255                          MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
2256                          MLX4_CMD_WRAPPED);
2257                 return;
2258         }
2259         __mlx4_counter_free(dev, idx);
2260 }
2261 EXPORT_SYMBOL_GPL(mlx4_counter_free);
2262
2263 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
2264 {
2265         struct mlx4_priv *priv = mlx4_priv(dev);
2266
2267         priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2268 }
2269 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid);
2270
2271 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
2272 {
2273         struct mlx4_priv *priv = mlx4_priv(dev);
2274
2275         return priv->mfunc.master.vf_admin[entry].vport[port].guid;
2276 }
2277 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
2278
2279 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
2280 {
2281         struct mlx4_priv *priv = mlx4_priv(dev);
2282         __be64 guid;
2283
2284         /* hw GUID */
2285         if (entry == 0)
2286                 return;
2287
2288         get_random_bytes((char *)&guid, sizeof(guid));
2289         guid &= ~(cpu_to_be64(1ULL << 56));
2290         guid |= cpu_to_be64(1ULL << 57);
2291         priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2292 }
2293
2294 static int mlx4_setup_hca(struct mlx4_dev *dev)
2295 {
2296         struct mlx4_priv *priv = mlx4_priv(dev);
2297         int err;
2298         int port;
2299         __be32 ib_port_default_caps;
2300
2301         err = mlx4_init_uar_table(dev);
2302         if (err) {
2303                 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
2304                  return err;
2305         }
2306
2307         err = mlx4_uar_alloc(dev, &priv->driver_uar);
2308         if (err) {
2309                 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
2310                 goto err_uar_table_free;
2311         }
2312
2313         priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
2314         if (!priv->kar) {
2315                 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
2316                 err = -ENOMEM;
2317                 goto err_uar_free;
2318         }
2319
2320         err = mlx4_init_pd_table(dev);
2321         if (err) {
2322                 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
2323                 goto err_kar_unmap;
2324         }
2325
2326         err = mlx4_init_xrcd_table(dev);
2327         if (err) {
2328                 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
2329                 goto err_pd_table_free;
2330         }
2331
2332         err = mlx4_init_mr_table(dev);
2333         if (err) {
2334                 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
2335                 goto err_xrcd_table_free;
2336         }
2337
2338         if (!mlx4_is_slave(dev)) {
2339                 err = mlx4_init_mcg_table(dev);
2340                 if (err) {
2341                         mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
2342                         goto err_mr_table_free;
2343                 }
2344                 err = mlx4_config_mad_demux(dev);
2345                 if (err) {
2346                         mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
2347                         goto err_mcg_table_free;
2348                 }
2349         }
2350
2351         err = mlx4_init_eq_table(dev);
2352         if (err) {
2353                 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
2354                 goto err_mcg_table_free;
2355         }
2356
2357         err = mlx4_cmd_use_events(dev);
2358         if (err) {
2359                 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
2360                 goto err_eq_table_free;
2361         }
2362
2363         err = mlx4_NOP(dev);
2364         if (err) {
2365                 if (dev->flags & MLX4_FLAG_MSI_X) {
2366                         mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
2367                                   priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
2368                         mlx4_warn(dev, "Trying again without MSI-X\n");
2369                 } else {
2370                         mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
2371                                  priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
2372                         mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
2373                 }
2374
2375                 goto err_cmd_poll;
2376         }
2377
2378         mlx4_dbg(dev, "NOP command IRQ test passed\n");
2379
2380         err = mlx4_init_cq_table(dev);
2381         if (err) {
2382                 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
2383                 goto err_cmd_poll;
2384         }
2385
2386         err = mlx4_init_srq_table(dev);
2387         if (err) {
2388                 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
2389                 goto err_cq_table_free;
2390         }
2391
2392         err = mlx4_init_qp_table(dev);
2393         if (err) {
2394                 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
2395                 goto err_srq_table_free;
2396         }
2397
2398         err = mlx4_init_counters_table(dev);
2399         if (err && err != -ENOENT) {
2400                 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
2401                 goto err_qp_table_free;
2402         }
2403
2404         if (!mlx4_is_slave(dev)) {
2405                 for (port = 1; port <= dev->caps.num_ports; port++) {
2406                         ib_port_default_caps = 0;
2407                         err = mlx4_get_port_ib_caps(dev, port,
2408                                                     &ib_port_default_caps);
2409                         if (err)
2410                                 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
2411                                           port, err);
2412                         dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
2413
2414                         /* initialize per-slave default ib port capabilities */
2415                         if (mlx4_is_master(dev)) {
2416                                 int i;
2417                                 for (i = 0; i < dev->num_slaves; i++) {
2418                                         if (i == mlx4_master_func_num(dev))
2419                                                 continue;
2420                                         priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
2421                                                 ib_port_default_caps;
2422                                 }
2423                         }
2424
2425                         if (mlx4_is_mfunc(dev))
2426                                 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
2427                         else
2428                                 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
2429
2430                         err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
2431                                             dev->caps.pkey_table_len[port] : -1);
2432                         if (err) {
2433                                 mlx4_err(dev, "Failed to set port %d, aborting\n",
2434                                          port);
2435                                 goto err_counters_table_free;
2436                         }
2437                 }
2438         }
2439
2440         return 0;
2441
2442 err_counters_table_free:
2443         mlx4_cleanup_counters_table(dev);
2444
2445 err_qp_table_free:
2446         mlx4_cleanup_qp_table(dev);
2447
2448 err_srq_table_free:
2449         mlx4_cleanup_srq_table(dev);
2450
2451 err_cq_table_free:
2452         mlx4_cleanup_cq_table(dev);
2453
2454 err_cmd_poll:
2455         mlx4_cmd_use_polling(dev);
2456
2457 err_eq_table_free:
2458         mlx4_cleanup_eq_table(dev);
2459
2460 err_mcg_table_free:
2461         if (!mlx4_is_slave(dev))
2462                 mlx4_cleanup_mcg_table(dev);
2463
2464 err_mr_table_free:
2465         mlx4_cleanup_mr_table(dev);
2466
2467 err_xrcd_table_free:
2468         mlx4_cleanup_xrcd_table(dev);
2469
2470 err_pd_table_free:
2471         mlx4_cleanup_pd_table(dev);
2472
2473 err_kar_unmap:
2474         iounmap(priv->kar);
2475
2476 err_uar_free:
2477         mlx4_uar_free(dev, &priv->driver_uar);
2478
2479 err_uar_table_free:
2480         mlx4_cleanup_uar_table(dev);
2481         return err;
2482 }
2483
2484 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
2485 {
2486         struct mlx4_priv *priv = mlx4_priv(dev);
2487         struct msix_entry *entries;
2488         int i;
2489
2490         if (msi_x) {
2491                 int nreq = dev->caps.num_ports * num_online_cpus() + MSIX_LEGACY_SZ;
2492
2493                 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
2494                              nreq);
2495
2496                 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2497                 if (!entries)
2498                         goto no_msi;
2499
2500                 for (i = 0; i < nreq; ++i)
2501                         entries[i].entry = i;
2502
2503                 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2,
2504                                              nreq);
2505
2506                 if (nreq < 0) {
2507                         kfree(entries);
2508                         goto no_msi;
2509                 } else if (nreq < MSIX_LEGACY_SZ +
2510                            dev->caps.num_ports * MIN_MSIX_P_PORT) {
2511                         /*Working in legacy mode , all EQ's shared*/
2512                         dev->caps.comp_pool           = 0;
2513                         dev->caps.num_comp_vectors = nreq - 1;
2514                 } else {
2515                         dev->caps.comp_pool           = nreq - MSIX_LEGACY_SZ;
2516                         dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
2517                 }
2518                 for (i = 0; i < nreq; ++i)
2519                         priv->eq_table.eq[i].irq = entries[i].vector;
2520
2521                 dev->flags |= MLX4_FLAG_MSI_X;
2522
2523                 kfree(entries);
2524                 return;
2525         }
2526
2527 no_msi:
2528         dev->caps.num_comp_vectors = 1;
2529         dev->caps.comp_pool        = 0;
2530
2531         for (i = 0; i < 2; ++i)
2532                 priv->eq_table.eq[i].irq = dev->persist->pdev->irq;
2533 }
2534
2535 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2536 {
2537         struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2538         int err = 0;
2539
2540         info->dev = dev;
2541         info->port = port;
2542         if (!mlx4_is_slave(dev)) {
2543                 mlx4_init_mac_table(dev, &info->mac_table);
2544                 mlx4_init_vlan_table(dev, &info->vlan_table);
2545                 mlx4_init_roce_gid_table(dev, &info->gid_table);
2546                 info->base_qpn = mlx4_get_base_qpn(dev, port);
2547         }
2548
2549         sprintf(info->dev_name, "mlx4_port%d", port);
2550         info->port_attr.attr.name = info->dev_name;
2551         if (mlx4_is_mfunc(dev))
2552                 info->port_attr.attr.mode = S_IRUGO;
2553         else {
2554                 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2555                 info->port_attr.store     = set_port_type;
2556         }
2557         info->port_attr.show      = show_port_type;
2558         sysfs_attr_init(&info->port_attr.attr);
2559
2560         err = device_create_file(&dev->persist->pdev->dev, &info->port_attr);
2561         if (err) {
2562                 mlx4_err(dev, "Failed to create file for port %d\n", port);
2563                 info->port = -1;
2564         }
2565
2566         sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2567         info->port_mtu_attr.attr.name = info->dev_mtu_name;
2568         if (mlx4_is_mfunc(dev))
2569                 info->port_mtu_attr.attr.mode = S_IRUGO;
2570         else {
2571                 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2572                 info->port_mtu_attr.store     = set_port_ib_mtu;
2573         }
2574         info->port_mtu_attr.show      = show_port_ib_mtu;
2575         sysfs_attr_init(&info->port_mtu_attr.attr);
2576
2577         err = device_create_file(&dev->persist->pdev->dev,
2578                                  &info->port_mtu_attr);
2579         if (err) {
2580                 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2581                 device_remove_file(&info->dev->persist->pdev->dev,
2582                                    &info->port_attr);
2583                 info->port = -1;
2584         }
2585
2586         return err;
2587 }
2588
2589 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2590 {
2591         if (info->port < 0)
2592                 return;
2593
2594         device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr);
2595         device_remove_file(&info->dev->persist->pdev->dev,
2596                            &info->port_mtu_attr);
2597 }
2598
2599 static int mlx4_init_steering(struct mlx4_dev *dev)
2600 {
2601         struct mlx4_priv *priv = mlx4_priv(dev);
2602         int num_entries = dev->caps.num_ports;
2603         int i, j;
2604
2605         priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2606         if (!priv->steer)
2607                 return -ENOMEM;
2608
2609         for (i = 0; i < num_entries; i++)
2610                 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2611                         INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
2612                         INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
2613                 }
2614         return 0;
2615 }
2616
2617 static void mlx4_clear_steering(struct mlx4_dev *dev)
2618 {
2619         struct mlx4_priv *priv = mlx4_priv(dev);
2620         struct mlx4_steer_index *entry, *tmp_entry;
2621         struct mlx4_promisc_qp *pqp, *tmp_pqp;
2622         int num_entries = dev->caps.num_ports;
2623         int i, j;
2624
2625         for (i = 0; i < num_entries; i++) {
2626                 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2627                         list_for_each_entry_safe(pqp, tmp_pqp,
2628                                                  &priv->steer[i].promisc_qps[j],
2629                                                  list) {
2630                                 list_del(&pqp->list);
2631                                 kfree(pqp);
2632                         }
2633                         list_for_each_entry_safe(entry, tmp_entry,
2634                                                  &priv->steer[i].steer_entries[j],
2635                                                  list) {
2636                                 list_del(&entry->list);
2637                                 list_for_each_entry_safe(pqp, tmp_pqp,
2638                                                          &entry->duplicates,
2639                                                          list) {
2640                                         list_del(&pqp->list);
2641                                         kfree(pqp);
2642                                 }
2643                                 kfree(entry);
2644                         }
2645                 }
2646         }
2647         kfree(priv->steer);
2648 }
2649
2650 static int extended_func_num(struct pci_dev *pdev)
2651 {
2652         return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2653 }
2654
2655 #define MLX4_OWNER_BASE 0x8069c
2656 #define MLX4_OWNER_SIZE 4
2657
2658 static int mlx4_get_ownership(struct mlx4_dev *dev)
2659 {
2660         void __iomem *owner;
2661         u32 ret;
2662
2663         if (pci_channel_offline(dev->persist->pdev))
2664                 return -EIO;
2665
2666         owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
2667                         MLX4_OWNER_BASE,
2668                         MLX4_OWNER_SIZE);
2669         if (!owner) {
2670                 mlx4_err(dev, "Failed to obtain ownership bit\n");
2671                 return -ENOMEM;
2672         }
2673
2674         ret = readl(owner);
2675         iounmap(owner);
2676         return (int) !!ret;
2677 }
2678
2679 static void mlx4_free_ownership(struct mlx4_dev *dev)
2680 {
2681         void __iomem *owner;
2682
2683         if (pci_channel_offline(dev->persist->pdev))
2684                 return;
2685
2686         owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
2687                         MLX4_OWNER_BASE,
2688                         MLX4_OWNER_SIZE);
2689         if (!owner) {
2690                 mlx4_err(dev, "Failed to obtain ownership bit\n");
2691                 return;
2692         }
2693         writel(0, owner);
2694         msleep(1000);
2695         iounmap(owner);
2696 }
2697
2698 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\
2699                                   !!((flags) & MLX4_FLAG_MASTER))
2700
2701 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev,
2702                              u8 total_vfs, int existing_vfs, int reset_flow)
2703 {
2704         u64 dev_flags = dev->flags;
2705         int err = 0;
2706
2707         if (reset_flow) {
2708                 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs),
2709                                        GFP_KERNEL);
2710                 if (!dev->dev_vfs)
2711                         goto free_mem;
2712                 return dev_flags;
2713         }
2714
2715         atomic_inc(&pf_loading);
2716         if (dev->flags &  MLX4_FLAG_SRIOV) {
2717                 if (existing_vfs != total_vfs) {
2718                         mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n",
2719                                  existing_vfs, total_vfs);
2720                         total_vfs = existing_vfs;
2721                 }
2722         }
2723
2724         dev->dev_vfs = kzalloc(total_vfs * sizeof(*dev->dev_vfs), GFP_KERNEL);
2725         if (NULL == dev->dev_vfs) {
2726                 mlx4_err(dev, "Failed to allocate memory for VFs\n");
2727                 goto disable_sriov;
2728         }
2729
2730         if (!(dev->flags &  MLX4_FLAG_SRIOV)) {
2731                 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs);
2732                 err = pci_enable_sriov(pdev, total_vfs);
2733         }
2734         if (err) {
2735                 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
2736                          err);
2737                 goto disable_sriov;
2738         } else {
2739                 mlx4_warn(dev, "Running in master mode\n");
2740                 dev_flags |= MLX4_FLAG_SRIOV |
2741                         MLX4_FLAG_MASTER;
2742                 dev_flags &= ~MLX4_FLAG_SLAVE;
2743                 dev->persist->num_vfs = total_vfs;
2744         }
2745         return dev_flags;
2746
2747 disable_sriov:
2748         atomic_dec(&pf_loading);
2749 free_mem:
2750         dev->persist->num_vfs = 0;
2751         kfree(dev->dev_vfs);
2752         return dev_flags & ~MLX4_FLAG_MASTER;
2753 }
2754
2755 enum {
2756         MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1,
2757 };
2758
2759 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
2760                               int *nvfs)
2761 {
2762         int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2];
2763         /* Checking for 64 VFs as a limitation of CX2 */
2764         if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) &&
2765             requested_vfs >= 64) {
2766                 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n",
2767                          requested_vfs);
2768                 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64;
2769         }
2770         return 0;
2771 }
2772
2773 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
2774                          int total_vfs, int *nvfs, struct mlx4_priv *priv,
2775                          int reset_flow)
2776 {
2777         struct mlx4_dev *dev;
2778         unsigned sum = 0;
2779         int err;
2780         int port;
2781         int i;
2782         struct mlx4_dev_cap *dev_cap = NULL;
2783         int existing_vfs = 0;
2784
2785         dev = &priv->dev;
2786
2787         INIT_LIST_HEAD(&priv->ctx_list);
2788         spin_lock_init(&priv->ctx_lock);
2789
2790         mutex_init(&priv->port_mutex);
2791         mutex_init(&priv->bond_mutex);
2792
2793         INIT_LIST_HEAD(&priv->pgdir_list);
2794         mutex_init(&priv->pgdir_mutex);
2795
2796         INIT_LIST_HEAD(&priv->bf_list);
2797         mutex_init(&priv->bf_mutex);
2798
2799         dev->rev_id = pdev->revision;
2800         dev->numa_node = dev_to_node(&pdev->dev);
2801
2802         /* Detect if this device is a virtual function */
2803         if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2804                 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2805                 dev->flags |= MLX4_FLAG_SLAVE;
2806         } else {
2807                 /* We reset the device and enable SRIOV only for physical
2808                  * devices.  Try to claim ownership on the device;
2809                  * if already taken, skip -- do not allow multiple PFs */
2810                 err = mlx4_get_ownership(dev);
2811                 if (err) {
2812                         if (err < 0)
2813                                 return err;
2814                         else {
2815                                 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
2816                                 return -EINVAL;
2817                         }
2818                 }
2819
2820                 atomic_set(&priv->opreq_count, 0);
2821                 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
2822
2823                 /*
2824                  * Now reset the HCA before we touch the PCI capabilities or
2825                  * attempt a firmware command, since a boot ROM may have left
2826                  * the HCA in an undefined state.
2827                  */
2828                 err = mlx4_reset(dev);
2829                 if (err) {
2830                         mlx4_err(dev, "Failed to reset HCA, aborting\n");
2831                         goto err_sriov;
2832                 }
2833
2834                 if (total_vfs) {
2835                         dev->flags = MLX4_FLAG_MASTER;
2836                         existing_vfs = pci_num_vf(pdev);
2837                         if (existing_vfs)
2838                                 dev->flags |= MLX4_FLAG_SRIOV;
2839                         dev->persist->num_vfs = total_vfs;
2840                 }
2841         }
2842
2843         /* on load remove any previous indication of internal error,
2844          * device is up.
2845          */
2846         dev->persist->state = MLX4_DEVICE_STATE_UP;
2847
2848 slave_start:
2849         err = mlx4_cmd_init(dev);
2850         if (err) {
2851                 mlx4_err(dev, "Failed to init command interface, aborting\n");
2852                 goto err_sriov;
2853         }
2854
2855         /* In slave functions, the communication channel must be initialized
2856          * before posting commands. Also, init num_slaves before calling
2857          * mlx4_init_hca */
2858         if (mlx4_is_mfunc(dev)) {
2859                 if (mlx4_is_master(dev)) {
2860                         dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2861
2862                 } else {
2863                         dev->num_slaves = 0;
2864                         err = mlx4_multi_func_init(dev);
2865                         if (err) {
2866                                 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
2867                                 goto err_cmd;
2868                         }
2869                 }
2870         }
2871
2872         err = mlx4_init_fw(dev);
2873         if (err) {
2874                 mlx4_err(dev, "Failed to init fw, aborting.\n");
2875                 goto err_mfunc;
2876         }
2877
2878         if (mlx4_is_master(dev)) {
2879                 /* when we hit the goto slave_start below, dev_cap already initialized */
2880                 if (!dev_cap) {
2881                         dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
2882
2883                         if (!dev_cap) {
2884                                 err = -ENOMEM;
2885                                 goto err_fw;
2886                         }
2887
2888                         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
2889                         if (err) {
2890                                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
2891                                 goto err_fw;
2892                         }
2893
2894                         if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
2895                                 goto err_fw;
2896
2897                         if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
2898                                 u64 dev_flags = mlx4_enable_sriov(dev, pdev,
2899                                                                   total_vfs,
2900                                                                   existing_vfs,
2901                                                                   reset_flow);
2902
2903                                 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
2904                                 dev->flags = dev_flags;
2905                                 if (!SRIOV_VALID_STATE(dev->flags)) {
2906                                         mlx4_err(dev, "Invalid SRIOV state\n");
2907                                         goto err_sriov;
2908                                 }
2909                                 err = mlx4_reset(dev);
2910                                 if (err) {
2911                                         mlx4_err(dev, "Failed to reset HCA, aborting.\n");
2912                                         goto err_sriov;
2913                                 }
2914                                 goto slave_start;
2915                         }
2916                 } else {
2917                         /* Legacy mode FW requires SRIOV to be enabled before
2918                          * doing QUERY_DEV_CAP, since max_eq's value is different if
2919                          * SRIOV is enabled.
2920                          */
2921                         memset(dev_cap, 0, sizeof(*dev_cap));
2922                         err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
2923                         if (err) {
2924                                 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
2925                                 goto err_fw;
2926                         }
2927
2928                         if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
2929                                 goto err_fw;
2930                 }
2931         }
2932
2933         err = mlx4_init_hca(dev);
2934         if (err) {
2935                 if (err == -EACCES) {
2936                         /* Not primary Physical function
2937                          * Running in slave mode */
2938                         mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
2939                         /* We're not a PF */
2940                         if (dev->flags & MLX4_FLAG_SRIOV) {
2941                                 if (!existing_vfs)
2942                                         pci_disable_sriov(pdev);
2943                                 if (mlx4_is_master(dev) && !reset_flow)
2944                                         atomic_dec(&pf_loading);
2945                                 dev->flags &= ~MLX4_FLAG_SRIOV;
2946                         }
2947                         if (!mlx4_is_slave(dev))
2948                                 mlx4_free_ownership(dev);
2949                         dev->flags |= MLX4_FLAG_SLAVE;
2950                         dev->flags &= ~MLX4_FLAG_MASTER;
2951                         goto slave_start;
2952                 } else
2953                         goto err_fw;
2954         }
2955
2956         if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
2957                 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs,
2958                                                   existing_vfs, reset_flow);
2959
2960                 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) {
2961                         mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR);
2962                         dev->flags = dev_flags;
2963                         err = mlx4_cmd_init(dev);
2964                         if (err) {
2965                                 /* Only VHCR is cleaned up, so could still
2966                                  * send FW commands
2967                                  */
2968                                 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n");
2969                                 goto err_close;
2970                         }
2971                 } else {
2972                         dev->flags = dev_flags;
2973                 }
2974
2975                 if (!SRIOV_VALID_STATE(dev->flags)) {
2976                         mlx4_err(dev, "Invalid SRIOV state\n");
2977                         goto err_close;
2978                 }
2979         }
2980
2981         /* check if the device is functioning at its maximum possible speed.
2982          * No return code for this call, just warn the user in case of PCI
2983          * express device capabilities are under-satisfied by the bus.
2984          */
2985         if (!mlx4_is_slave(dev))
2986                 mlx4_check_pcie_caps(dev);
2987
2988         /* In master functions, the communication channel must be initialized
2989          * after obtaining its address from fw */
2990         if (mlx4_is_master(dev)) {
2991                 int ib_ports = 0;
2992
2993                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2994                         ib_ports++;
2995
2996                 if (ib_ports &&
2997                     (num_vfs_argc > 1 || probe_vfs_argc > 1)) {
2998                         mlx4_err(dev,
2999                                  "Invalid syntax of num_vfs/probe_vfs with IB port - single port VFs syntax is only supported when all ports are configured as ethernet\n");
3000                         err = -EINVAL;
3001                         goto err_close;
3002                 }
3003                 if (dev->caps.num_ports < 2 &&
3004                     num_vfs_argc > 1) {
3005                         err = -EINVAL;
3006                         mlx4_err(dev,
3007                                  "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n",
3008                                  dev->caps.num_ports);
3009                         goto err_close;
3010                 }
3011                 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs));
3012
3013                 for (i = 0;
3014                      i < sizeof(dev->persist->nvfs)/
3015                      sizeof(dev->persist->nvfs[0]); i++) {
3016                         unsigned j;
3017
3018                         for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) {
3019                                 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1;
3020                                 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
3021                                         dev->caps.num_ports;
3022                         }
3023                 }
3024
3025                 /* In master functions, the communication channel
3026                  * must be initialized after obtaining its address from fw
3027                  */
3028                 err = mlx4_multi_func_init(dev);
3029                 if (err) {
3030                         mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n");
3031                         goto err_close;
3032                 }
3033         }
3034
3035         err = mlx4_alloc_eq_table(dev);
3036         if (err)
3037                 goto err_master_mfunc;
3038
3039         priv->msix_ctl.pool_bm = 0;
3040         mutex_init(&priv->msix_ctl.pool_lock);
3041
3042         mlx4_enable_msi_x(dev);
3043         if ((mlx4_is_mfunc(dev)) &&
3044             !(dev->flags & MLX4_FLAG_MSI_X)) {
3045                 err = -ENOSYS;
3046                 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
3047                 goto err_free_eq;
3048         }
3049
3050         if (!mlx4_is_slave(dev)) {
3051                 err = mlx4_init_steering(dev);
3052                 if (err)
3053                         goto err_disable_msix;
3054         }
3055
3056         err = mlx4_setup_hca(dev);
3057         if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
3058             !mlx4_is_mfunc(dev)) {
3059                 dev->flags &= ~MLX4_FLAG_MSI_X;
3060                 dev->caps.num_comp_vectors = 1;
3061                 dev->caps.comp_pool        = 0;
3062                 pci_disable_msix(pdev);
3063                 err = mlx4_setup_hca(dev);
3064         }
3065
3066         if (err)
3067                 goto err_steer;
3068
3069         mlx4_init_quotas(dev);
3070         /* When PF resources are ready arm its comm channel to enable
3071          * getting commands
3072          */
3073         if (mlx4_is_master(dev)) {
3074                 err = mlx4_ARM_COMM_CHANNEL(dev);
3075                 if (err) {
3076                         mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
3077                                  err);
3078                         goto err_steer;
3079                 }
3080         }
3081
3082         for (port = 1; port <= dev->caps.num_ports; port++) {
3083                 err = mlx4_init_port_info(dev, port);
3084                 if (err)
3085                         goto err_port;
3086         }
3087
3088         priv->v2p.port1 = 1;
3089         priv->v2p.port2 = 2;
3090
3091         err = mlx4_register_device(dev);
3092         if (err)
3093                 goto err_port;
3094
3095         mlx4_request_modules(dev);
3096
3097         mlx4_sense_init(dev);
3098         mlx4_start_sense(dev);
3099
3100         priv->removed = 0;
3101
3102         if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3103                 atomic_dec(&pf_loading);
3104
3105         kfree(dev_cap);
3106         return 0;
3107
3108 err_port:
3109         for (--port; port >= 1; --port)
3110                 mlx4_cleanup_port_info(&priv->port[port]);
3111
3112         mlx4_cleanup_counters_table(dev);
3113         mlx4_cleanup_qp_table(dev);
3114         mlx4_cleanup_srq_table(dev);
3115         mlx4_cleanup_cq_table(dev);
3116         mlx4_cmd_use_polling(dev);
3117         mlx4_cleanup_eq_table(dev);
3118         mlx4_cleanup_mcg_table(dev);
3119         mlx4_cleanup_mr_table(dev);
3120         mlx4_cleanup_xrcd_table(dev);
3121         mlx4_cleanup_pd_table(dev);
3122         mlx4_cleanup_uar_table(dev);
3123
3124 err_steer:
3125         if (!mlx4_is_slave(dev))
3126                 mlx4_clear_steering(dev);
3127
3128 err_disable_msix:
3129         if (dev->flags & MLX4_FLAG_MSI_X)
3130                 pci_disable_msix(pdev);
3131
3132 err_free_eq:
3133         mlx4_free_eq_table(dev);
3134
3135 err_master_mfunc:
3136         if (mlx4_is_master(dev)) {
3137                 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY);
3138                 mlx4_multi_func_cleanup(dev);
3139         }
3140
3141         if (mlx4_is_slave(dev)) {
3142                 kfree(dev->caps.qp0_qkey);
3143                 kfree(dev->caps.qp0_tunnel);
3144                 kfree(dev->caps.qp0_proxy);
3145                 kfree(dev->caps.qp1_tunnel);
3146                 kfree(dev->caps.qp1_proxy);
3147         }
3148
3149 err_close:
3150         mlx4_close_hca(dev);
3151
3152 err_fw:
3153         mlx4_close_fw(dev);
3154
3155 err_mfunc:
3156         if (mlx4_is_slave(dev))
3157                 mlx4_multi_func_cleanup(dev);
3158
3159 err_cmd:
3160         mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3161
3162 err_sriov:
3163         if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) {
3164                 pci_disable_sriov(pdev);
3165                 dev->flags &= ~MLX4_FLAG_SRIOV;
3166         }
3167
3168         if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3169                 atomic_dec(&pf_loading);
3170
3171         kfree(priv->dev.dev_vfs);
3172
3173         if (!mlx4_is_slave(dev))
3174                 mlx4_free_ownership(dev);
3175
3176         kfree(dev_cap);
3177         return err;
3178 }
3179
3180 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
3181                            struct mlx4_priv *priv)
3182 {
3183         int err;
3184         int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3185         int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3186         const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
3187                 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
3188         unsigned total_vfs = 0;
3189         unsigned int i;
3190
3191         pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
3192
3193         err = pci_enable_device(pdev);
3194         if (err) {
3195                 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
3196                 return err;
3197         }
3198
3199         /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
3200          * per port, we must limit the number of VFs to 63 (since their are
3201          * 128 MACs)
3202          */
3203         for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
3204              total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
3205                 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
3206                 if (nvfs[i] < 0) {
3207                         dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
3208                         err = -EINVAL;
3209                         goto err_disable_pdev;
3210                 }
3211         }
3212         for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
3213              i++) {
3214                 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
3215                 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
3216                         dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
3217                         err = -EINVAL;
3218                         goto err_disable_pdev;
3219                 }
3220         }
3221         if (total_vfs >= MLX4_MAX_NUM_VF) {
3222                 dev_err(&pdev->dev,
3223                         "Requested more VF's (%d) than allowed (%d)\n",
3224                         total_vfs, MLX4_MAX_NUM_VF - 1);
3225                 err = -EINVAL;
3226                 goto err_disable_pdev;
3227         }
3228
3229         for (i = 0; i < MLX4_MAX_PORTS; i++) {
3230                 if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
3231                         dev_err(&pdev->dev,
3232                                 "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
3233                                 nvfs[i] + nvfs[2], i + 1,
3234                                 MLX4_MAX_NUM_VF_P_PORT - 1);
3235                         err = -EINVAL;
3236                         goto err_disable_pdev;
3237                 }
3238         }
3239
3240         /* Check for BARs. */
3241         if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
3242             !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3243                 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
3244                         pci_dev_data, pci_resource_flags(pdev, 0));
3245                 err = -ENODEV;
3246                 goto err_disable_pdev;
3247         }
3248         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
3249                 dev_err(&pdev->dev, "Missing UAR, aborting\n");
3250                 err = -ENODEV;
3251                 goto err_disable_pdev;
3252         }
3253
3254         err = pci_request_regions(pdev, DRV_NAME);
3255         if (err) {
3256                 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
3257                 goto err_disable_pdev;
3258         }
3259
3260         pci_set_master(pdev);
3261
3262         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3263         if (err) {
3264                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
3265                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3266                 if (err) {
3267                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
3268                         goto err_release_regions;
3269                 }
3270         }
3271         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3272         if (err) {
3273                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
3274                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3275                 if (err) {
3276                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
3277                         goto err_release_regions;
3278                 }
3279         }
3280
3281         /* Allow large DMA segments, up to the firmware limit of 1 GB */
3282         dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
3283         /* Detect if this device is a virtual function */
3284         if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3285                 /* When acting as pf, we normally skip vfs unless explicitly
3286                  * requested to probe them.
3287                  */
3288                 if (total_vfs) {
3289                         unsigned vfs_offset = 0;
3290
3291                         for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
3292                              vfs_offset + nvfs[i] < extended_func_num(pdev);
3293                              vfs_offset += nvfs[i], i++)
3294                                 ;
3295                         if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
3296                                 err = -ENODEV;
3297                                 goto err_release_regions;
3298                         }
3299                         if ((extended_func_num(pdev) - vfs_offset)
3300                             > prb_vf[i]) {
3301                                 dev_warn(&pdev->dev, "Skipping virtual function:%d\n",
3302                                          extended_func_num(pdev));
3303                                 err = -ENODEV;
3304                                 goto err_release_regions;
3305                         }
3306                 }
3307         }
3308
3309         err = mlx4_catas_init(&priv->dev);
3310         if (err)
3311                 goto err_release_regions;
3312
3313         err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0);
3314         if (err)
3315                 goto err_catas;
3316
3317         return 0;
3318
3319 err_catas:
3320         mlx4_catas_end(&priv->dev);
3321
3322 err_release_regions:
3323         pci_release_regions(pdev);
3324
3325 err_disable_pdev:
3326         pci_disable_device(pdev);
3327         pci_set_drvdata(pdev, NULL);
3328         return err;
3329 }
3330
3331 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
3332 {
3333         struct mlx4_priv *priv;
3334         struct mlx4_dev *dev;
3335         int ret;
3336
3337         printk_once(KERN_INFO "%s", mlx4_version);
3338
3339         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
3340         if (!priv)
3341                 return -ENOMEM;
3342
3343         dev       = &priv->dev;
3344         dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL);
3345         if (!dev->persist) {
3346                 kfree(priv);
3347                 return -ENOMEM;
3348         }
3349         dev->persist->pdev = pdev;
3350         dev->persist->dev = dev;
3351         pci_set_drvdata(pdev, dev->persist);
3352         priv->pci_dev_data = id->driver_data;
3353         mutex_init(&dev->persist->device_state_mutex);
3354         mutex_init(&dev->persist->interface_state_mutex);
3355
3356         ret =  __mlx4_init_one(pdev, id->driver_data, priv);
3357         if (ret) {
3358                 kfree(dev->persist);
3359                 kfree(priv);
3360         } else {
3361                 pci_save_state(pdev);
3362         }
3363
3364         return ret;
3365 }
3366
3367 static void mlx4_clean_dev(struct mlx4_dev *dev)
3368 {
3369         struct mlx4_dev_persistent *persist = dev->persist;
3370         struct mlx4_priv *priv = mlx4_priv(dev);
3371         unsigned long   flags = (dev->flags & RESET_PERSIST_MASK_FLAGS);
3372
3373         memset(priv, 0, sizeof(*priv));
3374         priv->dev.persist = persist;
3375         priv->dev.flags = flags;
3376 }
3377
3378 static void mlx4_unload_one(struct pci_dev *pdev)
3379 {
3380         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3381         struct mlx4_dev  *dev  = persist->dev;
3382         struct mlx4_priv *priv = mlx4_priv(dev);
3383         int               pci_dev_data;
3384         int p, i;
3385
3386         if (priv->removed)
3387                 return;
3388
3389         /* saving current ports type for further use */
3390         for (i = 0; i < dev->caps.num_ports; i++) {
3391                 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1];
3392                 dev->persist->curr_port_poss_type[i] = dev->caps.
3393                                                        possible_type[i + 1];
3394         }
3395
3396         pci_dev_data = priv->pci_dev_data;
3397
3398         mlx4_stop_sense(dev);
3399         mlx4_unregister_device(dev);
3400
3401         for (p = 1; p <= dev->caps.num_ports; p++) {
3402                 mlx4_cleanup_port_info(&priv->port[p]);
3403                 mlx4_CLOSE_PORT(dev, p);
3404         }
3405
3406         if (mlx4_is_master(dev))
3407                 mlx4_free_resource_tracker(dev,
3408                                            RES_TR_FREE_SLAVES_ONLY);
3409
3410         mlx4_cleanup_counters_table(dev);
3411         mlx4_cleanup_qp_table(dev);
3412         mlx4_cleanup_srq_table(dev);
3413         mlx4_cleanup_cq_table(dev);
3414         mlx4_cmd_use_polling(dev);
3415         mlx4_cleanup_eq_table(dev);
3416         mlx4_cleanup_mcg_table(dev);
3417         mlx4_cleanup_mr_table(dev);
3418         mlx4_cleanup_xrcd_table(dev);
3419         mlx4_cleanup_pd_table(dev);
3420
3421         if (mlx4_is_master(dev))
3422                 mlx4_free_resource_tracker(dev,
3423                                            RES_TR_FREE_STRUCTS_ONLY);
3424
3425         iounmap(priv->kar);
3426         mlx4_uar_free(dev, &priv->driver_uar);
3427         mlx4_cleanup_uar_table(dev);
3428         if (!mlx4_is_slave(dev))
3429                 mlx4_clear_steering(dev);
3430         mlx4_free_eq_table(dev);
3431         if (mlx4_is_master(dev))
3432                 mlx4_multi_func_cleanup(dev);
3433         mlx4_close_hca(dev);
3434         mlx4_close_fw(dev);
3435         if (mlx4_is_slave(dev))
3436                 mlx4_multi_func_cleanup(dev);
3437         mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3438
3439         if (dev->flags & MLX4_FLAG_MSI_X)
3440                 pci_disable_msix(pdev);
3441
3442         if (!mlx4_is_slave(dev))
3443                 mlx4_free_ownership(dev);
3444
3445         kfree(dev->caps.qp0_qkey);
3446         kfree(dev->caps.qp0_tunnel);
3447         kfree(dev->caps.qp0_proxy);
3448         kfree(dev->caps.qp1_tunnel);
3449         kfree(dev->caps.qp1_proxy);
3450         kfree(dev->dev_vfs);
3451
3452         mlx4_clean_dev(dev);
3453         priv->pci_dev_data = pci_dev_data;
3454         priv->removed = 1;
3455 }
3456
3457 static void mlx4_remove_one(struct pci_dev *pdev)
3458 {
3459         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3460         struct mlx4_dev  *dev  = persist->dev;
3461         struct mlx4_priv *priv = mlx4_priv(dev);
3462         int active_vfs = 0;
3463
3464         mutex_lock(&persist->interface_state_mutex);
3465         persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
3466         mutex_unlock(&persist->interface_state_mutex);
3467
3468         /* Disabling SR-IOV is not allowed while there are active vf's */
3469         if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) {
3470                 active_vfs = mlx4_how_many_lives_vf(dev);
3471                 if (active_vfs) {
3472                         pr_warn("Removing PF when there are active VF's !!\n");
3473                         pr_warn("Will not disable SR-IOV.\n");
3474                 }
3475         }
3476
3477         /* device marked to be under deletion running now without the lock
3478          * letting other tasks to be terminated
3479          */
3480         if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3481                 mlx4_unload_one(pdev);
3482         else
3483                 mlx4_info(dev, "%s: interface is down\n", __func__);
3484         mlx4_catas_end(dev);
3485         if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
3486                 mlx4_warn(dev, "Disabling SR-IOV\n");
3487                 pci_disable_sriov(pdev);
3488         }
3489
3490         pci_release_regions(pdev);
3491         pci_disable_device(pdev);
3492         kfree(dev->persist);
3493         kfree(priv);
3494         pci_set_drvdata(pdev, NULL);
3495 }
3496
3497 static int restore_current_port_types(struct mlx4_dev *dev,
3498                                       enum mlx4_port_type *types,
3499                                       enum mlx4_port_type *poss_types)
3500 {
3501         struct mlx4_priv *priv = mlx4_priv(dev);
3502         int err, i;
3503
3504         mlx4_stop_sense(dev);
3505
3506         mutex_lock(&priv->port_mutex);
3507         for (i = 0; i < dev->caps.num_ports; i++)
3508                 dev->caps.possible_type[i + 1] = poss_types[i];
3509         err = mlx4_change_port_types(dev, types);
3510         mlx4_start_sense(dev);
3511         mutex_unlock(&priv->port_mutex);
3512
3513         return err;
3514 }
3515
3516 int mlx4_restart_one(struct pci_dev *pdev)
3517 {
3518         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3519         struct mlx4_dev  *dev  = persist->dev;
3520         struct mlx4_priv *priv = mlx4_priv(dev);
3521         int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3522         int pci_dev_data, err, total_vfs;
3523
3524         pci_dev_data = priv->pci_dev_data;
3525         total_vfs = dev->persist->num_vfs;
3526         memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
3527
3528         mlx4_unload_one(pdev);
3529         err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
3530         if (err) {
3531                 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n",
3532                          __func__, pci_name(pdev), err);
3533                 return err;
3534         }
3535
3536         err = restore_current_port_types(dev, dev->persist->curr_port_type,
3537                                          dev->persist->curr_port_poss_type);
3538         if (err)
3539                 mlx4_err(dev, "could not restore original port types (%d)\n",
3540                          err);
3541
3542         return err;
3543 }
3544
3545 static const struct pci_device_id mlx4_pci_table[] = {
3546         /* MT25408 "Hermon" SDR */
3547         { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3548         /* MT25408 "Hermon" DDR */
3549         { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3550         /* MT25408 "Hermon" QDR */
3551         { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3552         /* MT25408 "Hermon" DDR PCIe gen2 */
3553         { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3554         /* MT25408 "Hermon" QDR PCIe gen2 */
3555         { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3556         /* MT25408 "Hermon" EN 10GigE */
3557         { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3558         /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
3559         { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3560         /* MT25458 ConnectX EN 10GBASE-T 10GigE */
3561         { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3562         /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
3563         { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3564         /* MT26468 ConnectX EN 10GigE PCIe gen2*/
3565         { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3566         /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
3567         { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3568         /* MT26478 ConnectX2 40GigE PCIe gen2 */
3569         { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3570         /* MT25400 Family [ConnectX-2 Virtual Function] */
3571         { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
3572         /* MT27500 Family [ConnectX-3] */
3573         { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
3574         /* MT27500 Family [ConnectX-3 Virtual Function] */
3575         { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
3576         { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
3577         { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
3578         { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
3579         { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
3580         { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
3581         { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
3582         { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
3583         { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
3584         { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
3585         { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
3586         { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
3587         { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
3588         { 0, }
3589 };
3590
3591 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
3592
3593 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
3594                                               pci_channel_state_t state)
3595 {
3596         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3597
3598         mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n");
3599         mlx4_enter_error_state(persist);
3600
3601         mutex_lock(&persist->interface_state_mutex);
3602         if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3603                 mlx4_unload_one(pdev);
3604
3605         mutex_unlock(&persist->interface_state_mutex);
3606         if (state == pci_channel_io_perm_failure)
3607                 return PCI_ERS_RESULT_DISCONNECT;
3608
3609         pci_disable_device(pdev);
3610         return PCI_ERS_RESULT_NEED_RESET;
3611 }
3612
3613 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
3614 {
3615         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3616         struct mlx4_dev  *dev  = persist->dev;
3617         struct mlx4_priv *priv = mlx4_priv(dev);
3618         int               ret;
3619         int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3620         int total_vfs;
3621
3622         mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
3623         ret = pci_enable_device(pdev);
3624         if (ret) {
3625                 mlx4_err(dev, "Can not re-enable device, ret=%d\n", ret);
3626                 return PCI_ERS_RESULT_DISCONNECT;
3627         }
3628
3629         pci_set_master(pdev);
3630         pci_restore_state(pdev);
3631         pci_save_state(pdev);
3632
3633         total_vfs = dev->persist->num_vfs;
3634         memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
3635
3636         mutex_lock(&persist->interface_state_mutex);
3637         if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
3638                 ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
3639                                     priv, 1);
3640                 if (ret) {
3641                         mlx4_err(dev, "%s: mlx4_load_one failed, ret=%d\n",
3642                                  __func__,  ret);
3643                         goto end;
3644                 }
3645
3646                 ret = restore_current_port_types(dev, dev->persist->
3647                                                  curr_port_type, dev->persist->
3648                                                  curr_port_poss_type);
3649                 if (ret)
3650                         mlx4_err(dev, "could not restore original port types (%d)\n", ret);
3651         }
3652 end:
3653         mutex_unlock(&persist->interface_state_mutex);
3654
3655         return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
3656 }
3657
3658 static void mlx4_shutdown(struct pci_dev *pdev)
3659 {
3660         struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3661
3662         mlx4_info(persist->dev, "mlx4_shutdown was called\n");
3663         mutex_lock(&persist->interface_state_mutex);
3664         if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3665                 mlx4_unload_one(pdev);
3666         mutex_unlock(&persist->interface_state_mutex);
3667 }
3668
3669 static const struct pci_error_handlers mlx4_err_handler = {
3670         .error_detected = mlx4_pci_err_detected,
3671         .slot_reset     = mlx4_pci_slot_reset,
3672 };
3673
3674 static struct pci_driver mlx4_driver = {
3675         .name           = DRV_NAME,
3676         .id_table       = mlx4_pci_table,
3677         .probe          = mlx4_init_one,
3678         .shutdown       = mlx4_shutdown,
3679         .remove         = mlx4_remove_one,
3680         .err_handler    = &mlx4_err_handler,
3681 };
3682
3683 static int __init mlx4_verify_params(void)
3684 {
3685         if ((log_num_mac < 0) || (log_num_mac > 7)) {
3686                 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
3687                 return -1;
3688         }
3689
3690         if (log_num_vlan != 0)
3691                 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
3692                         MLX4_LOG_NUM_VLANS);
3693
3694         if (use_prio != 0)
3695                 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
3696
3697         if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
3698                 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
3699                         log_mtts_per_seg);
3700                 return -1;
3701         }
3702
3703         /* Check if module param for ports type has legal combination */
3704         if (port_type_array[0] == false && port_type_array[1] == true) {
3705                 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
3706                 port_type_array[0] = true;
3707         }
3708
3709         if (mlx4_log_num_mgm_entry_size < -7 ||
3710             (mlx4_log_num_mgm_entry_size > 0 &&
3711              (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
3712               mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) {
3713                 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n",
3714                         mlx4_log_num_mgm_entry_size,
3715                         MLX4_MIN_MGM_LOG_ENTRY_SIZE,
3716                         MLX4_MAX_MGM_LOG_ENTRY_SIZE);
3717                 return -1;
3718         }
3719
3720         return 0;
3721 }
3722
3723 static int __init mlx4_init(void)
3724 {
3725         int ret;
3726
3727         if (mlx4_verify_params())
3728                 return -EINVAL;
3729
3730
3731         mlx4_wq = create_singlethread_workqueue("mlx4");
3732         if (!mlx4_wq)
3733                 return -ENOMEM;
3734
3735         ret = pci_register_driver(&mlx4_driver);
3736         if (ret < 0)
3737                 destroy_workqueue(mlx4_wq);
3738         return ret < 0 ? ret : 0;
3739 }
3740
3741 static void __exit mlx4_cleanup(void)
3742 {
3743         pci_unregister_driver(&mlx4_driver);
3744         destroy_workqueue(mlx4_wq);
3745 }
3746
3747 module_init(mlx4_init);
3748 module_exit(mlx4_cleanup);