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         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 132                 props->device_cap_flags |= IB_DEVICE_XRC;
 133
 134         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 135                 0xffffff;
 136         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 137         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 138         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 139
 140         props->max_mr_size         = ~0ull;
 141         props->page_size_cap       = dev->dev->caps.page_size_cap;
 142         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 143         props->max_qp_wr           = dev->dev->caps.max_wqes;
 144         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 145                                          dev->dev->caps.max_rq_sg);
 146         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 147         props->max_cqe             = dev->dev->caps.max_cqes;
 148         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 149         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 150         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 151         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 152         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 153         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 154         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 155         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 156         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 157         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 158         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 159                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 160         props->masked_atomic_cap   = IB_ATOMIC_HCA;
 161         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 162         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 163         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 164         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 165                                            props->max_mcast_grp;
 166         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 167         props->max_ah = INT_MAX;
 168
 169 out:
 170         kfree(in_mad);
 171         kfree(out_mad);
 172
 173         return err;
 174 }
 175
 176 static enum rdma_link_layer
 177 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 178 {
 179         struct mlx4_dev *dev = to_mdev(device)->dev;
 180
 181         return dev->caps.port_mask & (1 << (port_num - 1)) ?
 182                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 183 }
 184
 185 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 186                               struct ib_port_attr *props,
 187                               struct ib_smp *in_mad,
 188                               struct ib_smp *out_mad)
 189 {
 190         int ext_active_speed;
 191         int err;
 192
 193         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 194         props->lmc              = out_mad->data[34] & 0x7;
 195         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 196         props->sm_sl            = out_mad->data[36] & 0xf;
 197         props->state            = out_mad->data[32] & 0xf;
 198         props->phys_state       = out_mad->data[33] >> 4;
 199         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 200         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 201         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 202         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 203         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 204         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 205         props->active_width     = out_mad->data[31] & 0xf;
 206         props->active_speed     = out_mad->data[35] >> 4;
 207         props->max_mtu          = out_mad->data[41] & 0xf;
 208         props->active_mtu       = out_mad->data[36] >> 4;
 209         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 210         props->max_vl_num       = out_mad->data[37] >> 4;
 211         props->init_type_reply  = out_mad->data[41] >> 4;
 212
 213         /* Check if extended speeds (EDR/FDR/...) are supported */
 214         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 215                 ext_active_speed = out_mad->data[62] >> 4;
 216
 217                 switch (ext_active_speed) {
 218                 case 1:
 219                         props->active_speed = 16; /* FDR */
 220                         break;
 221                 case 2:
 222                         props->active_speed = 32; /* EDR */
 223                         break;
 224                 }
 225         }
 226
 227         /* If reported active speed is QDR, check if is FDR-10 */
 228         if (props->active_speed == 4) {
 229                 if (to_mdev(ibdev)->dev->caps.ext_port_cap[port] &
 230                     MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
 231                         init_query_mad(in_mad);
 232                         in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 233                         in_mad->attr_mod = cpu_to_be32(port);
 234
 235                         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
 236                                            NULL, NULL, in_mad, out_mad);
 237                         if (err)
 238                                 return err;
 239
 240                         /* Checking LinkSpeedActive for FDR-10 */
 241                         if (out_mad->data[15] & 0x1)
 242                                 props->active_speed = 8;
 243                 }
 244         }
 245
 246         return 0;
 247 }
 248
 249 static u8 state_to_phys_state(enum ib_port_state state)
 250 {
 251         return state == IB_PORT_ACTIVE ? 5 : 3;
 252 }
 253
 254 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 255                                struct ib_port_attr *props,
 256                                struct ib_smp *out_mad)
 257 {
 258         struct mlx4_ib_iboe *iboe = &to_mdev(ibdev)->iboe;
 259         struct net_device *ndev;
 260         enum ib_mtu tmp;
 261
 262         props->active_width     = IB_WIDTH_1X;
 263         props->active_speed     = 4;
 264         props->port_cap_flags   = IB_PORT_CM_SUP;
 265         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 266         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 267         props->pkey_tbl_len     = 1;
 268         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 269         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 270         props->max_mtu          = IB_MTU_4096;
 271         props->subnet_timeout   = 0;
 272         props->max_vl_num       = out_mad->data[37] >> 4;
 273         props->init_type_reply  = 0;
 274         props->state            = IB_PORT_DOWN;
 275         props->phys_state       = state_to_phys_state(props->state);
 276         props->active_mtu       = IB_MTU_256;
 277         spin_lock(&iboe->lock);
 278         ndev = iboe->netdevs[port - 1];
 279         if (!ndev)
 280                 goto out;
 281
 282         tmp = iboe_get_mtu(ndev->mtu);
 283         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 284
 285         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 286                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 287         props->phys_state       = state_to_phys_state(props->state);
 288
 289 out:
 290         spin_unlock(&iboe->lock);
 291         return 0;
 292 }
 293
 294 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 295                               struct ib_port_attr *props)
 296 {
 297         struct ib_smp *in_mad  = NULL;
 298         struct ib_smp *out_mad = NULL;
 299         int err = -ENOMEM;
 300
 301         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 302         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 303         if (!in_mad || !out_mad)
 304                 goto out;
 305
 306         memset(props, 0, sizeof *props);
 307
 308         init_query_mad(in_mad);
 309         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 310         in_mad->attr_mod = cpu_to_be32(port);
 311
 312         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 313         if (err)
 314                 goto out;
 315
 316         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 317                 ib_link_query_port(ibdev, port, props, in_mad, out_mad) :
 318                 eth_link_query_port(ibdev, port, props, out_mad);
 319
 320 out:
 321         kfree(in_mad);
 322         kfree(out_mad);
 323
 324         return err;
 325 }
 326
 327 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 328                                union ib_gid *gid)
 329 {
 330         struct ib_smp *in_mad  = NULL;
 331         struct ib_smp *out_mad = NULL;
 332         int err = -ENOMEM;
 333
 334         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 335         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 336         if (!in_mad || !out_mad)
 337                 goto out;
 338
 339         init_query_mad(in_mad);
 340         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 341         in_mad->attr_mod = cpu_to_be32(port);
 342
 343         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 344         if (err)
 345                 goto out;
 346
 347         memcpy(gid->raw, out_mad->data + 8, 8);
 348
 349         init_query_mad(in_mad);
 350         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 351         in_mad->attr_mod = cpu_to_be32(index / 8);
 352
 353         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 354         if (err)
 355                 goto out;
 356
 357         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 358
 359 out:
 360         kfree(in_mad);
 361         kfree(out_mad);
 362         return err;
 363 }
 364
 365 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
 366                           union ib_gid *gid)
 367 {
 368         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 369
 370         *gid = dev->iboe.gid_table[port - 1][index];
 371
 372         return 0;
 373 }
 374
 375 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 376                              union ib_gid *gid)
 377 {
 378         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
 379                 return __mlx4_ib_query_gid(ibdev, port, index, gid);
 380         else
 381                 return iboe_query_gid(ibdev, port, index, gid);
 382 }
 383
 384 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 385                               u16 *pkey)
 386 {
 387         struct ib_smp *in_mad  = NULL;
 388         struct ib_smp *out_mad = NULL;
 389         int err = -ENOMEM;
 390
 391         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 392         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 393         if (!in_mad || !out_mad)
 394                 goto out;
 395
 396         init_query_mad(in_mad);
 397         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 398         in_mad->attr_mod = cpu_to_be32(index / 32);
 399
 400         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 401         if (err)
 402                 goto out;
 403
 404         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 405
 406 out:
 407         kfree(in_mad);
 408         kfree(out_mad);
 409         return err;
 410 }
 411
 412 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 413                                  struct ib_device_modify *props)
 414 {
 415         struct mlx4_cmd_mailbox *mailbox;
 416
 417         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 418                 return -EOPNOTSUPP;
 419
 420         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 421                 return 0;
 422
 423         spin_lock(&to_mdev(ibdev)->sm_lock);
 424         memcpy(ibdev->node_desc, props->node_desc, 64);
 425         spin_unlock(&to_mdev(ibdev)->sm_lock);
 426
 427         /*
 428          * If possible, pass node desc to FW, so it can generate
 429          * a 144 trap.  If cmd fails, just ignore.
 430          */
 431         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 432         if (IS_ERR(mailbox))
 433                 return 0;
 434
 435         memset(mailbox->buf, 0, 256);
 436         memcpy(mailbox->buf, props->node_desc, 64);
 437         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 438                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);
 439
 440         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 441
 442         return 0;
 443 }
 444
 445 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 446                          u32 cap_mask)
 447 {
 448         struct mlx4_cmd_mailbox *mailbox;
 449         int err;
 450         u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 451
 452         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 453         if (IS_ERR(mailbox))
 454                 return PTR_ERR(mailbox);
 455
 456         memset(mailbox->buf, 0, 256);
 457
 458         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 459                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 460                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 461         } else {
 462                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 463                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 464         }
 465
 466         err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
 467                        MLX4_CMD_TIME_CLASS_B);
 468
 469         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 470         return err;
 471 }
 472
 473 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 474                                struct ib_port_modify *props)
 475 {
 476         struct ib_port_attr attr;
 477         u32 cap_mask;
 478         int err;
 479
 480         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 481
 482         err = mlx4_ib_query_port(ibdev, port, &attr);
 483         if (err)
 484                 goto out;
 485
 486         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 487                 ~props->clr_port_cap_mask;
 488
 489         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 490                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 491                             cap_mask);
 492
 493 out:
 494         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 495         return err;
 496 }
 497
 498 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 499                                                   struct ib_udata *udata)
 500 {
 501         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 502         struct mlx4_ib_ucontext *context;
 503         struct mlx4_ib_alloc_ucontext_resp resp;
 504         int err;
 505
 506         if (!dev->ib_active)
 507                 return ERR_PTR(-EAGAIN);
 508
 509         resp.qp_tab_size      = dev->dev->caps.num_qps;
 510         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 511         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 512
 513         context = kmalloc(sizeof *context, GFP_KERNEL);
 514         if (!context)
 515                 return ERR_PTR(-ENOMEM);
 516
 517         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 518         if (err) {
 519                 kfree(context);
 520                 return ERR_PTR(err);
 521         }
 522
 523         INIT_LIST_HEAD(&context->db_page_list);
 524         mutex_init(&context->db_page_mutex);
 525
 526         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 527         if (err) {
 528                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 529                 kfree(context);
 530                 return ERR_PTR(-EFAULT);
 531         }
 532
 533         return &context->ibucontext;
 534 }
 535
 536 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 537 {
 538         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 539
 540         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 541         kfree(context);
 542
 543         return 0;
 544 }
 545
 546 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 547 {
 548         struct mlx4_ib_dev *dev = to_mdev(context->device);
 549
 550         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 551                 return -EINVAL;
 552
 553         if (vma->vm_pgoff == 0) {
 554                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 555
 556                 if (io_remap_pfn_range(vma, vma->vm_start,
 557                                        to_mucontext(context)->uar.pfn,
 558                                        PAGE_SIZE, vma->vm_page_prot))
 559                         return -EAGAIN;
 560         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 561                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 562
 563                 if (io_remap_pfn_range(vma, vma->vm_start,
 564                                        to_mucontext(context)->uar.pfn +
 565                                        dev->dev->caps.num_uars,
 566                                        PAGE_SIZE, vma->vm_page_prot))
 567                         return -EAGAIN;
 568         } else
 569                 return -EINVAL;
 570
 571         return 0;
 572 }
 573
 574 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 575                                       struct ib_ucontext *context,
 576                                       struct ib_udata *udata)
 577 {
 578         struct mlx4_ib_pd *pd;
 579         int err;
 580
 581         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 582         if (!pd)
 583                 return ERR_PTR(-ENOMEM);
 584
 585         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 586         if (err) {
 587                 kfree(pd);
 588                 return ERR_PTR(err);
 589         }
 590
 591         if (context)
 592                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 593                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 594                         kfree(pd);
 595                         return ERR_PTR(-EFAULT);
 596                 }
 597
 598         return &pd->ibpd;
 599 }
 600
 601 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 602 {
 603         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 604         kfree(pd);
 605
 606         return 0;
 607 }
 608
 609 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
 610                                           struct ib_ucontext *context,
 611                                           struct ib_udata *udata)
 612 {
 613         struct mlx4_ib_xrcd *xrcd;
 614         int err;
 615
 616         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
 617                 return ERR_PTR(-ENOSYS);
 618
 619         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
 620         if (!xrcd)
 621                 return ERR_PTR(-ENOMEM);
 622
 623         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
 624         if (err)
 625                 goto err1;
 626
 627         xrcd->pd = ib_alloc_pd(ibdev);
 628         if (IS_ERR(xrcd->pd)) {
 629                 err = PTR_ERR(xrcd->pd);
 630                 goto err2;
 631         }
 632
 633         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
 634         if (IS_ERR(xrcd->cq)) {
 635                 err = PTR_ERR(xrcd->cq);
 636                 goto err3;
 637         }
 638
 639         return &xrcd->ibxrcd;
 640
 641 err3:
 642         ib_dealloc_pd(xrcd->pd);
 643 err2:
 644         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
 645 err1:
 646         kfree(xrcd);
 647         return ERR_PTR(err);
 648 }
 649
 650 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
 651 {
 652         ib_destroy_cq(to_mxrcd(xrcd)->cq);
 653         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
 654         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
 655         kfree(xrcd);
 656
 657         return 0;
 658 }
 659
 660 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 661 {
 662         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 663         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 664         struct mlx4_ib_gid_entry *ge;
 665
 666         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 667         if (!ge)
 668                 return -ENOMEM;
 669
 670         ge->gid = *gid;
 671         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 672                 ge->port = mqp->port;
 673                 ge->added = 1;
 674         }
 675
 676         mutex_lock(&mqp->mutex);
 677         list_add_tail(&ge->list, &mqp->gid_list);
 678         mutex_unlock(&mqp->mutex);
 679
 680         return 0;
 681 }
 682
 683 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 684                    union ib_gid *gid)
 685 {
 686         u8 mac[6];
 687         struct net_device *ndev;
 688         int ret = 0;
 689
 690         if (!mqp->port)
 691                 return 0;
 692
 693         spin_lock(&mdev->iboe.lock);
 694         ndev = mdev->iboe.netdevs[mqp->port - 1];
 695         if (ndev)
 696                 dev_hold(ndev);
 697         spin_unlock(&mdev->iboe.lock);
 698
 699         if (ndev) {
 700                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 701                 rtnl_lock();
 702                 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
 703                 ret = 1;
 704                 rtnl_unlock();
 705                 dev_put(ndev);
 706         }
 707
 708         return ret;
 709 }
 710
 711 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 712 {
 713         int err;
 714         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 715         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 716
 717         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
 718                                     !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
 719                                     MLX4_PROT_IB_IPV6);
 720         if (err)
 721                 return err;
 722
 723         err = add_gid_entry(ibqp, gid);
 724         if (err)
 725                 goto err_add;
 726
 727         return 0;
 728
 729 err_add:
 730         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 731         return err;
 732 }
 733
 734 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
 735 {
 736         struct mlx4_ib_gid_entry *ge;
 737         struct mlx4_ib_gid_entry *tmp;
 738         struct mlx4_ib_gid_entry *ret = NULL;
 739
 740         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
 741                 if (!memcmp(raw, ge->gid.raw, 16)) {
 742                         ret = ge;
 743                         break;
 744                 }
 745         }
 746
 747         return ret;
 748 }
 749
 750 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 751 {
 752         int err;
 753         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 754         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 755         u8 mac[6];
 756         struct net_device *ndev;
 757         struct mlx4_ib_gid_entry *ge;
 758
 759         err = mlx4_multicast_detach(mdev->dev,
 760                                     &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 761         if (err)
 762                 return err;
 763
 764         mutex_lock(&mqp->mutex);
 765         ge = find_gid_entry(mqp, gid->raw);
 766         if (ge) {
 767                 spin_lock(&mdev->iboe.lock);
 768                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
 769                 if (ndev)
 770                         dev_hold(ndev);
 771                 spin_unlock(&mdev->iboe.lock);
 772                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 773                 if (ndev) {
 774                         rtnl_lock();
 775                         dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
 776                         rtnl_unlock();
 777                         dev_put(ndev);
 778                 }
 779                 list_del(&ge->list);
 780                 kfree(ge);
 781         } else
 782                 printk(KERN_WARNING "could not find mgid entry\n");
 783
 784         mutex_unlock(&mqp->mutex);
 785
 786         return 0;
 787 }
 788
 789 static int init_node_data(struct mlx4_ib_dev *dev)
 790 {
 791         struct ib_smp *in_mad  = NULL;
 792         struct ib_smp *out_mad = NULL;
 793         int err = -ENOMEM;
 794
 795         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 796         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 797         if (!in_mad || !out_mad)
 798                 goto out;
 799
 800         init_query_mad(in_mad);
 801         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 802
 803         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 804         if (err)
 805                 goto out;
 806
 807         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 808
 809         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 810
 811         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 812         if (err)
 813                 goto out;
 814
 815         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 816
 817 out:
 818         kfree(in_mad);
 819         kfree(out_mad);
 820         return err;
 821 }
 822
 823 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 824                         char *buf)
 825 {
 826         struct mlx4_ib_dev *dev =
 827                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 828         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 829 }
 830
 831 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 832                            char *buf)
 833 {
 834         struct mlx4_ib_dev *dev =
 835                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 836         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 837                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 838                        (int) dev->dev->caps.fw_ver & 0xffff);
 839 }
 840
 841 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 842                         char *buf)
 843 {
 844         struct mlx4_ib_dev *dev =
 845                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 846         return sprintf(buf, "%x\n", dev->dev->rev_id);
 847 }
 848
 849 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 850                           char *buf)
 851 {
 852         struct mlx4_ib_dev *dev =
 853                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 854         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 855                        dev->dev->board_id);
 856 }
 857
 858 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 859 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 860 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 861 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 862
 863 static struct device_attribute *mlx4_class_attributes[] = {
 864         &dev_attr_hw_rev,
 865         &dev_attr_fw_ver,
 866         &dev_attr_hca_type,
 867         &dev_attr_board_id
 868 };
 869
 870 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
 871 {
 872         memcpy(eui, dev->dev_addr, 3);
 873         memcpy(eui + 5, dev->dev_addr + 3, 3);
 874         if (vlan_id < 0x1000) {
 875                 eui[3] = vlan_id >> 8;
 876                 eui[4] = vlan_id & 0xff;
 877         } else {
 878                 eui[3] = 0xff;
 879                 eui[4] = 0xfe;
 880         }
 881         eui[0] ^= 2;
 882 }
 883
 884 static void update_gids_task(struct work_struct *work)
 885 {
 886         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
 887         struct mlx4_cmd_mailbox *mailbox;
 888         union ib_gid *gids;
 889         int err;
 890         struct mlx4_dev *dev = gw->dev->dev;
 891         struct ib_event event;
 892
 893         mailbox = mlx4_alloc_cmd_mailbox(dev);
 894         if (IS_ERR(mailbox)) {
 895                 printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox));
 896                 return;
 897         }
 898
 899         gids = mailbox->buf;
 900         memcpy(gids, gw->gids, sizeof gw->gids);
 901
 902         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
 903                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B);
 904         if (err)
 905                 printk(KERN_WARNING "set port command failed\n");
 906         else {
 907                 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
 908                 event.device = &gw->dev->ib_dev;
 909                 event.element.port_num = gw->port;
 910                 event.event    = IB_EVENT_GID_CHANGE;
 911                 ib_dispatch_event(&event);
 912         }
 913
 914         mlx4_free_cmd_mailbox(dev, mailbox);
 915         kfree(gw);
 916 }
 917
 918 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
 919 {
 920         struct net_device *ndev = dev->iboe.netdevs[port - 1];
 921         struct update_gid_work *work;
 922         struct net_device *tmp;
 923         int i;
 924         u8 *hits;
 925         int ret;
 926         union ib_gid gid;
 927         int free;
 928         int found;
 929         int need_update = 0;
 930         u16 vid;
 931
 932         work = kzalloc(sizeof *work, GFP_ATOMIC);
 933         if (!work)
 934                 return -ENOMEM;
 935
 936         hits = kzalloc(128, GFP_ATOMIC);
 937         if (!hits) {
 938                 ret = -ENOMEM;
 939                 goto out;
 940         }
 941
 942         rcu_read_lock();
 943         for_each_netdev_rcu(&init_net, tmp) {
 944                 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
 945                         gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
 946                         vid = rdma_vlan_dev_vlan_id(tmp);
 947                         mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
 948                         found = 0;
 949                         free = -1;
 950                         for (i = 0; i < 128; ++i) {
 951                                 if (free < 0 &&
 952                                     !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 953                                         free = i;
 954                                 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
 955                                         hits[i] = 1;
 956                                         found = 1;
 957                                         break;
 958                                 }
 959                         }
 960
 961                         if (!found) {
 962                                 if (tmp == ndev &&
 963                                     (memcmp(&dev->iboe.gid_table[port - 1][0],
 964                                             &gid, sizeof gid) ||
 965                                      !memcmp(&dev->iboe.gid_table[port - 1][0],
 966                                              &zgid, sizeof gid))) {
 967                                         dev->iboe.gid_table[port - 1][0] = gid;
 968                                         ++need_update;
 969                                         hits[0] = 1;
 970                                 } else if (free >= 0) {
 971                                         dev->iboe.gid_table[port - 1][free] = gid;
 972                                         hits[free] = 1;
 973                                         ++need_update;
 974                                 }
 975                         }
 976                 }
 977         }
 978         rcu_read_unlock();
 979
 980         for (i = 0; i < 128; ++i)
 981                 if (!hits[i]) {
 982                         if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 983                                 ++need_update;
 984                         dev->iboe.gid_table[port - 1][i] = zgid;
 985                 }
 986
 987         if (need_update) {
 988                 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
 989                 INIT_WORK(&work->work, update_gids_task);
 990                 work->port = port;
 991                 work->dev = dev;
 992                 queue_work(wq, &work->work);
 993         } else
 994                 kfree(work);
 995
 996         kfree(hits);
 997         return 0;
 998
 999 out:
1000         kfree(work);
1001         return ret;
1002 }
1003
1004 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1005 {
1006         switch (event) {
1007         case NETDEV_UP:
1008         case NETDEV_CHANGEADDR:
1009                 update_ipv6_gids(dev, port, 0);
1010                 break;
1011
1012         case NETDEV_DOWN:
1013                 update_ipv6_gids(dev, port, 1);
1014                 dev->iboe.netdevs[port - 1] = NULL;
1015         }
1016 }
1017
1018 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1019 {
1020         update_ipv6_gids(dev, port, 0);
1021 }
1022
1023 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1024 {
1025         update_ipv6_gids(dev, port, 1);
1026 }
1027
1028 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1029                                 void *ptr)
1030 {
1031         struct net_device *dev = ptr;
1032         struct mlx4_ib_dev *ibdev;
1033         struct net_device *oldnd;
1034         struct mlx4_ib_iboe *iboe;
1035         int port;
1036
1037         if (!net_eq(dev_net(dev), &init_net))
1038                 return NOTIFY_DONE;
1039
1040         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1041         iboe = &ibdev->iboe;
1042
1043         spin_lock(&iboe->lock);
1044         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1045                 oldnd = iboe->netdevs[port - 1];
1046                 iboe->netdevs[port - 1] =
1047                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1048                 if (oldnd != iboe->netdevs[port - 1]) {
1049                         if (iboe->netdevs[port - 1])
1050                                 netdev_added(ibdev, port);
1051                         else
1052                                 netdev_removed(ibdev, port);
1053                 }
1054         }
1055
1056         if (dev == iboe->netdevs[0] ||
1057             (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1058                 handle_en_event(ibdev, 1, event);
1059         else if (dev == iboe->netdevs[1]
1060                  || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1061                 handle_en_event(ibdev, 2, event);
1062
1063         spin_unlock(&iboe->lock);
1064
1065         return NOTIFY_DONE;
1066 }
1067
1068 static void *mlx4_ib_add(struct mlx4_dev *dev)
1069 {
1070         struct mlx4_ib_dev *ibdev;
1071         int num_ports = 0;
1072         int i;
1073         int err;
1074         struct mlx4_ib_iboe *iboe;
1075
1076         printk_once(KERN_INFO "%s", mlx4_ib_version);
1077
1078         mlx4_foreach_ib_transport_port(i, dev)
1079                 num_ports++;
1080
1081         /* No point in registering a device with no ports... */
1082         if (num_ports == 0)
1083                 return NULL;
1084
1085         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1086         if (!ibdev) {
1087                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1088                 return NULL;
1089         }
1090
1091         iboe = &ibdev->iboe;
1092
1093         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1094                 goto err_dealloc;
1095
1096         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1097                 goto err_pd;
1098
1099         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1100                                  PAGE_SIZE);
1101         if (!ibdev->uar_map)
1102                 goto err_uar;
1103         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1104
1105         ibdev->dev = dev;
1106
1107         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1108         ibdev->ib_dev.owner             = THIS_MODULE;
1109         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1110         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1111         ibdev->num_ports                = num_ports;
1112         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1113         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1114         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1115
1116         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
1117         ibdev->ib_dev.uverbs_cmd_mask   =
1118                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1119                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1120                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1121                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1122                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1123                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1124                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1125                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1126                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1127                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1128                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1129                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1130                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1131                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1132                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1133                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1134                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
1135                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1136                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1137                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1138                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
1139                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
1140                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1141
1142         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
1143         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
1144         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
1145         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
1146         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
1147         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
1148         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
1149         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
1150         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
1151         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
1152         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
1153         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
1154         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
1155         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
1156         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
1157         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
1158         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
1159         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
1160         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
1161         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
1162         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
1163         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
1164         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
1165         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
1166         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
1167         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
1168         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
1169         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
1170         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
1171         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
1172         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
1173         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
1174         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
1175         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
1176         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
1177         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1178         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1179         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
1180         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
1181         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
1182         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
1183
1184         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
1185         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
1186         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
1187         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
1188
1189         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1190                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1191                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1192                 ibdev->ib_dev.uverbs_cmd_mask |=
1193                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1194                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1195         }
1196
1197         spin_lock_init(&iboe->lock);
1198
1199         if (init_node_data(ibdev))
1200                 goto err_map;
1201
1202         for (i = 0; i < ibdev->num_ports; ++i) {
1203                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1204                                                 IB_LINK_LAYER_ETHERNET) {
1205                         err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1206                         if (err)
1207                                 ibdev->counters[i] = -1;
1208                 } else
1209                                 ibdev->counters[i] = -1;
1210         }
1211
1212         spin_lock_init(&ibdev->sm_lock);
1213         mutex_init(&ibdev->cap_mask_mutex);
1214
1215         if (ib_register_device(&ibdev->ib_dev, NULL))
1216                 goto err_counter;
1217
1218         if (mlx4_ib_mad_init(ibdev))
1219                 goto err_reg;
1220
1221         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1222                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1223                 err = register_netdevice_notifier(&iboe->nb);
1224                 if (err)
1225                         goto err_reg;
1226         }
1227
1228         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
1229                 if (device_create_file(&ibdev->ib_dev.dev,
1230                                        mlx4_class_attributes[i]))
1231                         goto err_notif;
1232         }
1233
1234         ibdev->ib_active = true;
1235
1236         return ibdev;
1237
1238 err_notif:
1239         if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1240                 printk(KERN_WARNING "failure unregistering notifier\n");
1241         flush_workqueue(wq);
1242
1243 err_reg:
1244         ib_unregister_device(&ibdev->ib_dev);
1245
1246 err_counter:
1247         for (; i; --i)
1248                 if (ibdev->counters[i - 1] != -1)
1249                         mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1250
1251 err_map:
1252         iounmap(ibdev->uar_map);
1253
1254 err_uar:
1255         mlx4_uar_free(dev, &ibdev->priv_uar);
1256
1257 err_pd:
1258         mlx4_pd_free(dev, ibdev->priv_pdn);
1259
1260 err_dealloc:
1261         ib_dealloc_device(&ibdev->ib_dev);
1262
1263         return NULL;
1264 }
1265
1266 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1267 {
1268         struct mlx4_ib_dev *ibdev = ibdev_ptr;
1269         int p;
1270
1271         mlx4_ib_mad_cleanup(ibdev);
1272         ib_unregister_device(&ibdev->ib_dev);
1273         if (ibdev->iboe.nb.notifier_call) {
1274                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1275                         printk(KERN_WARNING "failure unregistering notifier\n");
1276                 ibdev->iboe.nb.notifier_call = NULL;
1277         }
1278         iounmap(ibdev->uar_map);
1279         for (p = 0; p < ibdev->num_ports; ++p)
1280                 if (ibdev->counters[p] != -1)
1281                         mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1282         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1283                 mlx4_CLOSE_PORT(dev, p);
1284
1285         mlx4_uar_free(dev, &ibdev->priv_uar);
1286         mlx4_pd_free(dev, ibdev->priv_pdn);
1287         ib_dealloc_device(&ibdev->ib_dev);
1288 }
1289
1290 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1291                           enum mlx4_dev_event event, int port)
1292 {
1293         struct ib_event ibev;
1294         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1295
1296         if (port > ibdev->num_ports)
1297                 return;
1298
1299         switch (event) {
1300         case MLX4_DEV_EVENT_PORT_UP:
1301                 ibev.event = IB_EVENT_PORT_ACTIVE;
1302                 break;
1303
1304         case MLX4_DEV_EVENT_PORT_DOWN:
1305                 ibev.event = IB_EVENT_PORT_ERR;
1306                 break;
1307
1308         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1309                 ibdev->ib_active = false;
1310                 ibev.event = IB_EVENT_DEVICE_FATAL;
1311                 break;
1312
1313         default:
1314                 return;
1315         }
1316
1317         ibev.device           = ibdev_ptr;
1318         ibev.element.port_num = port;
1319
1320         ib_dispatch_event(&ibev);
1321 }
1322
1323 static struct mlx4_interface mlx4_ib_interface = {
1324         .add            = mlx4_ib_add,
1325         .remove         = mlx4_ib_remove,
1326         .event          = mlx4_ib_event,
1327         .protocol       = MLX4_PROT_IB_IPV6
1328 };
1329
1330 static int __init mlx4_ib_init(void)
1331 {
1332         int err;
1333
1334         wq = create_singlethread_workqueue("mlx4_ib");
1335         if (!wq)
1336                 return -ENOMEM;
1337
1338         err = mlx4_register_interface(&mlx4_ib_interface);
1339         if (err) {
1340                 destroy_workqueue(wq);
1341                 return err;
1342         }
1343
1344         return 0;
1345 }
1346
1347 static void __exit mlx4_ib_cleanup(void)
1348 {
1349         mlx4_unregister_interface(&mlx4_ib_interface);
1350         destroy_workqueue(wq);
1351 }
1352
1353 module_init(mlx4_ib_init);
1354 module_exit(mlx4_ib_cleanup);