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