drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42
  43 #include <rdma/ib_smi.h>
  44 #include <rdma/ib_user_verbs.h>
  45 #include <rdma/ib_addr.h>
  46
  47 #include <linux/mlx4/driver.h>
  48 #include <linux/mlx4/cmd.h>
  49
  50 #include "mlx4_ib.h"
  51 #include "user.h"
  52
  53 #define DRV_NAME        "mlx4_ib"
  54 #define DRV_VERSION     "1.0"
  55 #define DRV_RELDATE     "April 4, 2008"
  56
  57 MODULE_AUTHOR("Roland Dreier");
  58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  59 MODULE_LICENSE("Dual BSD/GPL");
  60 MODULE_VERSION(DRV_VERSION);
  61
  62 static const char mlx4_ib_version[] =
  63         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  64         DRV_VERSION " (" DRV_RELDATE ")\n";
  65
  66 struct update_gid_work {
  67         struct work_struct      work;
  68         union ib_gid            gids[128];
  69         struct mlx4_ib_dev     *dev;
  70         int                     port;
  71 };
  72
  73 static struct workqueue_struct *wq;
  74
  75 static void init_query_mad(struct ib_smp *mad)
  76 {
  77         mad->base_version  = 1;
  78         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  79         mad->class_version = 1;
  80         mad->method        = IB_MGMT_METHOD_GET;
  81 }
  82
  83 static union ib_gid zgid;
  84
  85 static int mlx4_ib_query_device(struct ib_device *ibdev,
  86                                 struct ib_device_attr *props)
  87 {
  88         struct mlx4_ib_dev *dev = to_mdev(ibdev);
  89         struct ib_smp *in_mad  = NULL;
  90         struct ib_smp *out_mad = NULL;
  91         int err = -ENOMEM;
  92
  93         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  94         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  95         if (!in_mad || !out_mad)
  96                 goto out;
  97
  98         init_query_mad(in_mad);
  99         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 100
 101         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
 102         if (err)
 103                 goto out;
 104
 105         memset(props, 0, sizeof *props);
 106
 107         props->fw_ver = dev->dev->caps.fw_ver;
 108         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 109                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 110                 IB_DEVICE_SYS_IMAGE_GUID                |
 111                 IB_DEVICE_RC_RNR_NAK_GEN                |
 112                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 113         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 114                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 115         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 116                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 117         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 118                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 119         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 120                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 121         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 122                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 123         if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
 124                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 125         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 126                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 127         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 128             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 129             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 130                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 131
 132         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 133                 0xffffff;
 134         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 135         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 136         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 137
 138         props->max_mr_size         = ~0ull;
 139         props->page_size_cap       = dev->dev->caps.page_size_cap;
 140         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 141         props->max_qp_wr           = dev->dev->caps.max_wqes;
 142         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 143                                          dev->dev->caps.max_rq_sg);
 144         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 145         props->max_cqe             = dev->dev->caps.max_cqes;
 146         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 147         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 148         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 149         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 150         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 151         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 152         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 153         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 154         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 155         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 156         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 157                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 158         props->masked_atomic_cap   = IB_ATOMIC_HCA;
 159         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 160         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 161         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 162         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 163                                            props->max_mcast_grp;
 164         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 165
 166 out:
 167         kfree(in_mad);
 168         kfree(out_mad);
 169
 170         return err;
 171 }
 172
 173 static enum rdma_link_layer
 174 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 175 {
 176         struct mlx4_dev *dev = to_mdev(device)->dev;
 177
 178         return dev->caps.port_mask & (1 << (port_num - 1)) ?
 179                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 180 }
 181
 182 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 183                               struct ib_port_attr *props,
 184                               struct ib_smp *out_mad)
 185 {
 186         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 187         props->lmc              = out_mad->data[34] & 0x7;
 188         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 189         props->sm_sl            = out_mad->data[36] & 0xf;
 190         props->state            = out_mad->data[32] & 0xf;
 191         props->phys_state       = out_mad->data[33] >> 4;
 192         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 193         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 194         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 195         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 196         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 197         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 198         props->active_width     = out_mad->data[31] & 0xf;
 199         props->active_speed     = out_mad->data[35] >> 4;
 200         props->max_mtu          = out_mad->data[41] & 0xf;
 201         props->active_mtu       = out_mad->data[36] >> 4;
 202         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 203         props->max_vl_num       = out_mad->data[37] >> 4;
 204         props->init_type_reply  = out_mad->data[41] >> 4;
 205
 206         return 0;
 207 }
 208
 209 static u8 state_to_phys_state(enum ib_port_state state)
 210 {
 211         return state == IB_PORT_ACTIVE ? 5 : 3;
 212 }
 213
 214 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 215                                struct ib_port_attr *props,
 216                                struct ib_smp *out_mad)
 217 {
 218         struct mlx4_ib_iboe *iboe = &to_mdev(ibdev)->iboe;
 219         struct net_device *ndev;
 220         enum ib_mtu tmp;
 221
 222         props->active_width     = IB_WIDTH_1X;
 223         props->active_speed     = 4;
 224         props->port_cap_flags   = IB_PORT_CM_SUP;
 225         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 226         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 227         props->pkey_tbl_len     = 1;
 228         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 229         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 230         props->max_mtu          = IB_MTU_2048;
 231         props->subnet_timeout   = 0;
 232         props->max_vl_num       = out_mad->data[37] >> 4;
 233         props->init_type_reply  = 0;
 234         props->state            = IB_PORT_DOWN;
 235         props->phys_state       = state_to_phys_state(props->state);
 236         props->active_mtu       = IB_MTU_256;
 237         spin_lock(&iboe->lock);
 238         ndev = iboe->netdevs[port - 1];
 239         if (!ndev)
 240                 goto out;
 241
 242         tmp = iboe_get_mtu(ndev->mtu);
 243         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 244
 245         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 246                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 247         props->phys_state       = state_to_phys_state(props->state);
 248
 249 out:
 250         spin_unlock(&iboe->lock);
 251         return 0;
 252 }
 253
 254 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 255                               struct ib_port_attr *props)
 256 {
 257         struct ib_smp *in_mad  = NULL;
 258         struct ib_smp *out_mad = NULL;
 259         int err = -ENOMEM;
 260
 261         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 262         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 263         if (!in_mad || !out_mad)
 264                 goto out;
 265
 266         memset(props, 0, sizeof *props);
 267
 268         init_query_mad(in_mad);
 269         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 270         in_mad->attr_mod = cpu_to_be32(port);
 271
 272         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 273         if (err)
 274                 goto out;
 275
 276         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 277                 ib_link_query_port(ibdev, port, props, out_mad) :
 278                 eth_link_query_port(ibdev, port, props, out_mad);
 279
 280 out:
 281         kfree(in_mad);
 282         kfree(out_mad);
 283
 284         return err;
 285 }
 286
 287 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 288                                union ib_gid *gid)
 289 {
 290         struct ib_smp *in_mad  = NULL;
 291         struct ib_smp *out_mad = NULL;
 292         int err = -ENOMEM;
 293
 294         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 295         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 296         if (!in_mad || !out_mad)
 297                 goto out;
 298
 299         init_query_mad(in_mad);
 300         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 301         in_mad->attr_mod = cpu_to_be32(port);
 302
 303         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 304         if (err)
 305                 goto out;
 306
 307         memcpy(gid->raw, out_mad->data + 8, 8);
 308
 309         init_query_mad(in_mad);
 310         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 311         in_mad->attr_mod = cpu_to_be32(index / 8);
 312
 313         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 314         if (err)
 315                 goto out;
 316
 317         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 318
 319 out:
 320         kfree(in_mad);
 321         kfree(out_mad);
 322         return err;
 323 }
 324
 325 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
 326                           union ib_gid *gid)
 327 {
 328         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 329
 330         *gid = dev->iboe.gid_table[port - 1][index];
 331
 332         return 0;
 333 }
 334
 335 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 336                              union ib_gid *gid)
 337 {
 338         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
 339                 return __mlx4_ib_query_gid(ibdev, port, index, gid);
 340         else
 341                 return iboe_query_gid(ibdev, port, index, gid);
 342 }
 343
 344 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 345                               u16 *pkey)
 346 {
 347         struct ib_smp *in_mad  = NULL;
 348         struct ib_smp *out_mad = NULL;
 349         int err = -ENOMEM;
 350
 351         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 352         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 353         if (!in_mad || !out_mad)
 354                 goto out;
 355
 356         init_query_mad(in_mad);
 357         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 358         in_mad->attr_mod = cpu_to_be32(index / 32);
 359
 360         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 361         if (err)
 362                 goto out;
 363
 364         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 365
 366 out:
 367         kfree(in_mad);
 368         kfree(out_mad);
 369         return err;
 370 }
 371
 372 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 373                                  struct ib_device_modify *props)
 374 {
 375         struct mlx4_cmd_mailbox *mailbox;
 376
 377         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 378                 return -EOPNOTSUPP;
 379
 380         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 381                 return 0;
 382
 383         spin_lock(&to_mdev(ibdev)->sm_lock);
 384         memcpy(ibdev->node_desc, props->node_desc, 64);
 385         spin_unlock(&to_mdev(ibdev)->sm_lock);
 386
 387         /*
 388          * If possible, pass node desc to FW, so it can generate
 389          * a 144 trap.  If cmd fails, just ignore.
 390          */
 391         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 392         if (IS_ERR(mailbox))
 393                 return 0;
 394
 395         memset(mailbox->buf, 0, 256);
 396         memcpy(mailbox->buf, props->node_desc, 64);
 397         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 398                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);
 399
 400         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 401
 402         return 0;
 403 }
 404
 405 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 406                          u32 cap_mask)
 407 {
 408         struct mlx4_cmd_mailbox *mailbox;
 409         int err;
 410         u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 411
 412         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 413         if (IS_ERR(mailbox))
 414                 return PTR_ERR(mailbox);
 415
 416         memset(mailbox->buf, 0, 256);
 417
 418         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 419                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 420                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 421         } else {
 422                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 423                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 424         }
 425
 426         err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
 427                        MLX4_CMD_TIME_CLASS_B);
 428
 429         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 430         return err;
 431 }
 432
 433 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 434                                struct ib_port_modify *props)
 435 {
 436         struct ib_port_attr attr;
 437         u32 cap_mask;
 438         int err;
 439
 440         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 441
 442         err = mlx4_ib_query_port(ibdev, port, &attr);
 443         if (err)
 444                 goto out;
 445
 446         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 447                 ~props->clr_port_cap_mask;
 448
 449         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 450                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 451                             cap_mask);
 452
 453 out:
 454         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 455         return err;
 456 }
 457
 458 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 459                                                   struct ib_udata *udata)
 460 {
 461         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 462         struct mlx4_ib_ucontext *context;
 463         struct mlx4_ib_alloc_ucontext_resp resp;
 464         int err;
 465
 466         if (!dev->ib_active)
 467                 return ERR_PTR(-EAGAIN);
 468
 469         resp.qp_tab_size      = dev->dev->caps.num_qps;
 470         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 471         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 472
 473         context = kmalloc(sizeof *context, GFP_KERNEL);
 474         if (!context)
 475                 return ERR_PTR(-ENOMEM);
 476
 477         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 478         if (err) {
 479                 kfree(context);
 480                 return ERR_PTR(err);
 481         }
 482
 483         INIT_LIST_HEAD(&context->db_page_list);
 484         mutex_init(&context->db_page_mutex);
 485
 486         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 487         if (err) {
 488                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 489                 kfree(context);
 490                 return ERR_PTR(-EFAULT);
 491         }
 492
 493         return &context->ibucontext;
 494 }
 495
 496 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 497 {
 498         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 499
 500         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 501         kfree(context);
 502
 503         return 0;
 504 }
 505
 506 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 507 {
 508         struct mlx4_ib_dev *dev = to_mdev(context->device);
 509
 510         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 511                 return -EINVAL;
 512
 513         if (vma->vm_pgoff == 0) {
 514                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 515
 516                 if (io_remap_pfn_range(vma, vma->vm_start,
 517                                        to_mucontext(context)->uar.pfn,
 518                                        PAGE_SIZE, vma->vm_page_prot))
 519                         return -EAGAIN;
 520         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 521                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 522
 523                 if (io_remap_pfn_range(vma, vma->vm_start,
 524                                        to_mucontext(context)->uar.pfn +
 525                                        dev->dev->caps.num_uars,
 526                                        PAGE_SIZE, vma->vm_page_prot))
 527                         return -EAGAIN;
 528         } else
 529                 return -EINVAL;
 530
 531         return 0;
 532 }
 533
 534 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 535                                       struct ib_ucontext *context,
 536                                       struct ib_udata *udata)
 537 {
 538         struct mlx4_ib_pd *pd;
 539         int err;
 540
 541         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 542         if (!pd)
 543                 return ERR_PTR(-ENOMEM);
 544
 545         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 546         if (err) {
 547                 kfree(pd);
 548                 return ERR_PTR(err);
 549         }
 550
 551         if (context)
 552                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 553                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 554                         kfree(pd);
 555                         return ERR_PTR(-EFAULT);
 556                 }
 557
 558         return &pd->ibpd;
 559 }
 560
 561 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 562 {
 563         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 564         kfree(pd);
 565
 566         return 0;
 567 }
 568
 569 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 570 {
 571         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 572         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 573         struct mlx4_ib_gid_entry *ge;
 574
 575         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 576         if (!ge)
 577                 return -ENOMEM;
 578
 579         ge->gid = *gid;
 580         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 581                 ge->port = mqp->port;
 582                 ge->added = 1;
 583         }
 584
 585         mutex_lock(&mqp->mutex);
 586         list_add_tail(&ge->list, &mqp->gid_list);
 587         mutex_unlock(&mqp->mutex);
 588
 589         return 0;
 590 }
 591
 592 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 593                    union ib_gid *gid)
 594 {
 595         u8 mac[6];
 596         struct net_device *ndev;
 597         int ret = 0;
 598
 599         if (!mqp->port)
 600                 return 0;
 601
 602         spin_lock(&mdev->iboe.lock);
 603         ndev = mdev->iboe.netdevs[mqp->port - 1];
 604         if (ndev)
 605                 dev_hold(ndev);
 606         spin_unlock(&mdev->iboe.lock);
 607
 608         if (ndev) {
 609                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 610                 rtnl_lock();
 611                 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
 612                 ret = 1;
 613                 rtnl_unlock();
 614                 dev_put(ndev);
 615         }
 616
 617         return ret;
 618 }
 619
 620 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 621 {
 622         int err;
 623         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 624         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 625
 626         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
 627                                     !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
 628                                     MLX4_PROT_IB_IPV6);
 629         if (err)
 630                 return err;
 631
 632         err = add_gid_entry(ibqp, gid);
 633         if (err)
 634                 goto err_add;
 635
 636         return 0;
 637
 638 err_add:
 639         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 640         return err;
 641 }
 642
 643 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
 644 {
 645         struct mlx4_ib_gid_entry *ge;
 646         struct mlx4_ib_gid_entry *tmp;
 647         struct mlx4_ib_gid_entry *ret = NULL;
 648
 649         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
 650                 if (!memcmp(raw, ge->gid.raw, 16)) {
 651                         ret = ge;
 652                         break;
 653                 }
 654         }
 655
 656         return ret;
 657 }
 658
 659 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 660 {
 661         int err;
 662         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 663         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 664         u8 mac[6];
 665         struct net_device *ndev;
 666         struct mlx4_ib_gid_entry *ge;
 667
 668         err = mlx4_multicast_detach(mdev->dev,
 669                                     &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 670         if (err)
 671                 return err;
 672
 673         mutex_lock(&mqp->mutex);
 674         ge = find_gid_entry(mqp, gid->raw);
 675         if (ge) {
 676                 spin_lock(&mdev->iboe.lock);
 677                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
 678                 if (ndev)
 679                         dev_hold(ndev);
 680                 spin_unlock(&mdev->iboe.lock);
 681                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 682                 if (ndev) {
 683                         rtnl_lock();
 684                         dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
 685                         rtnl_unlock();
 686                         dev_put(ndev);
 687                 }
 688                 list_del(&ge->list);
 689                 kfree(ge);
 690         } else
 691                 printk(KERN_WARNING "could not find mgid entry\n");
 692
 693         mutex_unlock(&mqp->mutex);
 694
 695         return 0;
 696 }
 697
 698 static int init_node_data(struct mlx4_ib_dev *dev)
 699 {
 700         struct ib_smp *in_mad  = NULL;
 701         struct ib_smp *out_mad = NULL;
 702         int err = -ENOMEM;
 703
 704         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 705         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 706         if (!in_mad || !out_mad)
 707                 goto out;
 708
 709         init_query_mad(in_mad);
 710         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 711
 712         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 713         if (err)
 714                 goto out;
 715
 716         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 717
 718         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 719
 720         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 721         if (err)
 722                 goto out;
 723
 724         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 725
 726 out:
 727         kfree(in_mad);
 728         kfree(out_mad);
 729         return err;
 730 }
 731
 732 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 733                         char *buf)
 734 {
 735         struct mlx4_ib_dev *dev =
 736                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 737         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 738 }
 739
 740 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 741                            char *buf)
 742 {
 743         struct mlx4_ib_dev *dev =
 744                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 745         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 746                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 747                        (int) dev->dev->caps.fw_ver & 0xffff);
 748 }
 749
 750 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 751                         char *buf)
 752 {
 753         struct mlx4_ib_dev *dev =
 754                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 755         return sprintf(buf, "%x\n", dev->dev->rev_id);
 756 }
 757
 758 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 759                           char *buf)
 760 {
 761         struct mlx4_ib_dev *dev =
 762                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 763         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 764                        dev->dev->board_id);
 765 }
 766
 767 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 768 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 769 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 770 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 771
 772 static struct device_attribute *mlx4_class_attributes[] = {
 773         &dev_attr_hw_rev,
 774         &dev_attr_fw_ver,
 775         &dev_attr_hca_type,
 776         &dev_attr_board_id
 777 };
 778
 779 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
 780 {
 781         memcpy(eui, dev->dev_addr, 3);
 782         memcpy(eui + 5, dev->dev_addr + 3, 3);
 783         if (vlan_id < 0x1000) {
 784                 eui[3] = vlan_id >> 8;
 785                 eui[4] = vlan_id & 0xff;
 786         } else {
 787                 eui[3] = 0xff;
 788                 eui[4] = 0xfe;
 789         }
 790         eui[0] ^= 2;
 791 }
 792
 793 static void update_gids_task(struct work_struct *work)
 794 {
 795         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
 796         struct mlx4_cmd_mailbox *mailbox;
 797         union ib_gid *gids;
 798         int err;
 799         struct mlx4_dev *dev = gw->dev->dev;
 800         struct ib_event event;
 801
 802         mailbox = mlx4_alloc_cmd_mailbox(dev);
 803         if (IS_ERR(mailbox)) {
 804                 printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox));
 805                 return;
 806         }
 807
 808         gids = mailbox->buf;
 809         memcpy(gids, gw->gids, sizeof gw->gids);
 810
 811         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
 812                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B);
 813         if (err)
 814                 printk(KERN_WARNING "set port command failed\n");
 815         else {
 816                 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
 817                 event.device = &gw->dev->ib_dev;
 818                 event.element.port_num = gw->port;
 819                 event.event    = IB_EVENT_LID_CHANGE;
 820                 ib_dispatch_event(&event);
 821         }
 822
 823         mlx4_free_cmd_mailbox(dev, mailbox);
 824         kfree(gw);
 825 }
 826
 827 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
 828 {
 829         struct net_device *ndev = dev->iboe.netdevs[port - 1];
 830         struct update_gid_work *work;
 831         struct net_device *tmp;
 832         int i;
 833         u8 *hits;
 834         int ret;
 835         union ib_gid gid;
 836         int free;
 837         int found;
 838         int need_update = 0;
 839         u16 vid;
 840
 841         work = kzalloc(sizeof *work, GFP_ATOMIC);
 842         if (!work)
 843                 return -ENOMEM;
 844
 845         hits = kzalloc(128, GFP_ATOMIC);
 846         if (!hits) {
 847                 ret = -ENOMEM;
 848                 goto out;
 849         }
 850
 851         rcu_read_lock();
 852         for_each_netdev_rcu(&init_net, tmp) {
 853                 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
 854                         gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
 855                         vid = rdma_vlan_dev_vlan_id(tmp);
 856                         mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
 857                         found = 0;
 858                         free = -1;
 859                         for (i = 0; i < 128; ++i) {
 860                                 if (free < 0 &&
 861                                     !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 862                                         free = i;
 863                                 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
 864                                         hits[i] = 1;
 865                                         found = 1;
 866                                         break;
 867                                 }
 868                         }
 869
 870                         if (!found) {
 871                                 if (tmp == ndev &&
 872                                     (memcmp(&dev->iboe.gid_table[port - 1][0],
 873                                             &gid, sizeof gid) ||
 874                                      !memcmp(&dev->iboe.gid_table[port - 1][0],
 875                                              &zgid, sizeof gid))) {
 876                                         dev->iboe.gid_table[port - 1][0] = gid;
 877                                         ++need_update;
 878                                         hits[0] = 1;
 879                                 } else if (free >= 0) {
 880                                         dev->iboe.gid_table[port - 1][free] = gid;
 881                                         hits[free] = 1;
 882                                         ++need_update;
 883                                 }
 884                         }
 885                 }
 886         }
 887         rcu_read_unlock();
 888
 889         for (i = 0; i < 128; ++i)
 890                 if (!hits[i]) {
 891                         if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 892                                 ++need_update;
 893                         dev->iboe.gid_table[port - 1][i] = zgid;
 894                 }
 895
 896         if (need_update) {
 897                 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
 898                 INIT_WORK(&work->work, update_gids_task);
 899                 work->port = port;
 900                 work->dev = dev;
 901                 queue_work(wq, &work->work);
 902         } else
 903                 kfree(work);
 904
 905         kfree(hits);
 906         return 0;
 907
 908 out:
 909         kfree(work);
 910         return ret;
 911 }
 912
 913 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
 914 {
 915         switch (event) {
 916         case NETDEV_UP:
 917         case NETDEV_CHANGEADDR:
 918                 update_ipv6_gids(dev, port, 0);
 919                 break;
 920
 921         case NETDEV_DOWN:
 922                 update_ipv6_gids(dev, port, 1);
 923                 dev->iboe.netdevs[port - 1] = NULL;
 924         }
 925 }
 926
 927 static void netdev_added(struct mlx4_ib_dev *dev, int port)
 928 {
 929         update_ipv6_gids(dev, port, 0);
 930 }
 931
 932 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
 933 {
 934         update_ipv6_gids(dev, port, 1);
 935 }
 936
 937 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
 938                                 void *ptr)
 939 {
 940         struct net_device *dev = ptr;
 941         struct mlx4_ib_dev *ibdev;
 942         struct net_device *oldnd;
 943         struct mlx4_ib_iboe *iboe;
 944         int port;
 945
 946         if (!net_eq(dev_net(dev), &init_net))
 947                 return NOTIFY_DONE;
 948
 949         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
 950         iboe = &ibdev->iboe;
 951
 952         spin_lock(&iboe->lock);
 953         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
 954                 oldnd = iboe->netdevs[port - 1];
 955                 iboe->netdevs[port - 1] =
 956                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
 957                 if (oldnd != iboe->netdevs[port - 1]) {
 958                         if (iboe->netdevs[port - 1])
 959                                 netdev_added(ibdev, port);
 960                         else
 961                                 netdev_removed(ibdev, port);
 962                 }
 963         }
 964
 965         if (dev == iboe->netdevs[0] ||
 966             (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
 967                 handle_en_event(ibdev, 1, event);
 968         else if (dev == iboe->netdevs[1]
 969                  || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
 970                 handle_en_event(ibdev, 2, event);
 971
 972         spin_unlock(&iboe->lock);
 973
 974         return NOTIFY_DONE;
 975 }
 976
 977 static void *mlx4_ib_add(struct mlx4_dev *dev)
 978 {
 979         struct mlx4_ib_dev *ibdev;
 980         int num_ports = 0;
 981         int i;
 982         int err;
 983         struct mlx4_ib_iboe *iboe;
 984
 985         printk_once(KERN_INFO "%s", mlx4_ib_version);
 986
 987         mlx4_foreach_ib_transport_port(i, dev)
 988                 num_ports++;
 989
 990         /* No point in registering a device with no ports... */
 991         if (num_ports == 0)
 992                 return NULL;
 993
 994         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 995         if (!ibdev) {
 996                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 997                 return NULL;
 998         }
 999
1000         iboe = &ibdev->iboe;
1001
1002         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1003                 goto err_dealloc;
1004
1005         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1006                 goto err_pd;
1007
1008         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1009                                  PAGE_SIZE);
1010         if (!ibdev->uar_map)
1011                 goto err_uar;
1012         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1013
1014         ibdev->dev = dev;
1015
1016         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1017         ibdev->ib_dev.owner             = THIS_MODULE;
1018         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1019         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1020         ibdev->num_ports                = num_ports;
1021         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1022         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1023         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1024
1025         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
1026         ibdev->ib_dev.uverbs_cmd_mask   =
1027                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1028                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1029                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1030                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1031                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1032                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1033                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1034                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1035                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1036                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1037                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1038                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1039                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1040                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1041                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1042                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1043                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
1044                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1045                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1046                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1047                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1048
1049         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
1050         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
1051         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
1052         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
1053         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
1054         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
1055         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
1056         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
1057         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
1058         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
1059         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
1060         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
1061         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
1062         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
1063         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
1064         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
1065         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
1066         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
1067         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
1068         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
1069         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
1070         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
1071         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
1072         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
1073         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
1074         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
1075         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
1076         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
1077         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
1078         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
1079         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
1080         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
1081         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
1082         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
1083         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
1084         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1085         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1086         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
1087         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
1088         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
1089         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
1090
1091         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
1092         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
1093         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
1094         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
1095
1096         spin_lock_init(&iboe->lock);
1097
1098         if (init_node_data(ibdev))
1099                 goto err_map;
1100
1101         spin_lock_init(&ibdev->sm_lock);
1102         mutex_init(&ibdev->cap_mask_mutex);
1103
1104         if (ib_register_device(&ibdev->ib_dev, NULL))
1105                 goto err_map;
1106
1107         if (mlx4_ib_mad_init(ibdev))
1108                 goto err_reg;
1109
1110         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1111                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1112                 err = register_netdevice_notifier(&iboe->nb);
1113                 if (err)
1114                         goto err_reg;
1115         }
1116
1117         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
1118                 if (device_create_file(&ibdev->ib_dev.dev,
1119                                        mlx4_class_attributes[i]))
1120                         goto err_notif;
1121         }
1122
1123         ibdev->ib_active = true;
1124
1125         return ibdev;
1126
1127 err_notif:
1128         if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1129                 printk(KERN_WARNING "failure unregistering notifier\n");
1130         flush_workqueue(wq);
1131
1132 err_reg:
1133         ib_unregister_device(&ibdev->ib_dev);
1134
1135 err_map:
1136         iounmap(ibdev->uar_map);
1137
1138 err_uar:
1139         mlx4_uar_free(dev, &ibdev->priv_uar);
1140
1141 err_pd:
1142         mlx4_pd_free(dev, ibdev->priv_pdn);
1143
1144 err_dealloc:
1145         ib_dealloc_device(&ibdev->ib_dev);
1146
1147         return NULL;
1148 }
1149
1150 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1151 {
1152         struct mlx4_ib_dev *ibdev = ibdev_ptr;
1153         int p;
1154
1155         mlx4_ib_mad_cleanup(ibdev);
1156         ib_unregister_device(&ibdev->ib_dev);
1157         if (ibdev->iboe.nb.notifier_call) {
1158                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1159                         printk(KERN_WARNING "failure unregistering notifier\n");
1160                 ibdev->iboe.nb.notifier_call = NULL;
1161         }
1162         iounmap(ibdev->uar_map);
1163
1164         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1165                 mlx4_CLOSE_PORT(dev, p);
1166
1167         mlx4_uar_free(dev, &ibdev->priv_uar);
1168         mlx4_pd_free(dev, ibdev->priv_pdn);
1169         ib_dealloc_device(&ibdev->ib_dev);
1170 }
1171
1172 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1173                           enum mlx4_dev_event event, int port)
1174 {
1175         struct ib_event ibev;
1176         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1177
1178         if (port > ibdev->num_ports)
1179                 return;
1180
1181         switch (event) {
1182         case MLX4_DEV_EVENT_PORT_UP:
1183                 ibev.event = IB_EVENT_PORT_ACTIVE;
1184                 break;
1185
1186         case MLX4_DEV_EVENT_PORT_DOWN:
1187                 ibev.event = IB_EVENT_PORT_ERR;
1188                 break;
1189
1190         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1191                 ibdev->ib_active = false;
1192                 ibev.event = IB_EVENT_DEVICE_FATAL;
1193                 break;
1194
1195         default:
1196                 return;
1197         }
1198
1199         ibev.device           = ibdev_ptr;
1200         ibev.element.port_num = port;
1201
1202         ib_dispatch_event(&ibev);
1203 }
1204
1205 static struct mlx4_interface mlx4_ib_interface = {
1206         .add            = mlx4_ib_add,
1207         .remove         = mlx4_ib_remove,
1208         .event          = mlx4_ib_event,
1209         .protocol       = MLX4_PROT_IB_IPV6
1210 };
1211
1212 static int __init mlx4_ib_init(void)
1213 {
1214         int err;
1215
1216         wq = create_singlethread_workqueue("mlx4_ib");
1217         if (!wq)
1218                 return -ENOMEM;
1219
1220         err = mlx4_register_interface(&mlx4_ib_interface);
1221         if (err) {
1222                 destroy_workqueue(wq);
1223                 return err;
1224         }
1225
1226         return 0;
1227 }
1228
1229 static void __exit mlx4_ib_cleanup(void)
1230 {
1231         mlx4_unregister_interface(&mlx4_ib_interface);
1232         destroy_workqueue(wq);
1233 }
1234
1235 module_init(mlx4_ib_init);
1236 module_exit(mlx4_ib_cleanup);