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_DRV_NAME
  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 - MLX4_IB_SQ_MAX_SPARE;
 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 = dev->dev->caps.max_fmr_maps;
 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[port_num] == MLX4_PORT_TYPE_IB ?
 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 {
 187         struct ib_smp *in_mad  = NULL;
 188         struct ib_smp *out_mad = NULL;
 189         int ext_active_speed;
 190         int err = -ENOMEM;
 191
 192         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 193         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 194         if (!in_mad || !out_mad)
 195                 goto out;
 196
 197         init_query_mad(in_mad);
 198         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 199         in_mad->attr_mod = cpu_to_be32(port);
 200
 201         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL,
 202                                 in_mad, out_mad);
 203         if (err)
 204                 goto out;
 205
 206
 207         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 208         props->lmc              = out_mad->data[34] & 0x7;
 209         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 210         props->sm_sl            = out_mad->data[36] & 0xf;
 211         props->state            = out_mad->data[32] & 0xf;
 212         props->phys_state       = out_mad->data[33] >> 4;
 213         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 214         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 215         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 216         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 217         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 218         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 219         props->active_width     = out_mad->data[31] & 0xf;
 220         props->active_speed     = out_mad->data[35] >> 4;
 221         props->max_mtu          = out_mad->data[41] & 0xf;
 222         props->active_mtu       = out_mad->data[36] >> 4;
 223         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 224         props->max_vl_num       = out_mad->data[37] >> 4;
 225         props->init_type_reply  = out_mad->data[41] >> 4;
 226
 227         /* Check if extended speeds (EDR/FDR/...) are supported */
 228         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 229                 ext_active_speed = out_mad->data[62] >> 4;
 230
 231                 switch (ext_active_speed) {
 232                 case 1:
 233                         props->active_speed = IB_SPEED_FDR;
 234                         break;
 235                 case 2:
 236                         props->active_speed = IB_SPEED_EDR;
 237                         break;
 238                 }
 239         }
 240
 241         /* If reported active speed is QDR, check if is FDR-10 */
 242         if (props->active_speed == IB_SPEED_QDR) {
 243                 init_query_mad(in_mad);
 244                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 245                 in_mad->attr_mod = cpu_to_be32(port);
 246
 247                 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
 248                                    NULL, NULL, in_mad, out_mad);
 249                 if (err)
 250                         goto out;
 251
 252                 /* Checking LinkSpeedActive for FDR-10 */
 253                 if (out_mad->data[15] & 0x1)
 254                         props->active_speed = IB_SPEED_FDR10;
 255         }
 256
 257         /* Avoid wrong speed value returned by FW if the IB link is down. */
 258         if (props->state == IB_PORT_DOWN)
 259                  props->active_speed = IB_SPEED_SDR;
 260
 261 out:
 262         kfree(in_mad);
 263         kfree(out_mad);
 264         return err;
 265 }
 266
 267 static u8 state_to_phys_state(enum ib_port_state state)
 268 {
 269         return state == IB_PORT_ACTIVE ? 5 : 3;
 270 }
 271
 272 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 273                                struct ib_port_attr *props)
 274 {
 275
 276         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 277         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 278         struct net_device *ndev;
 279         enum ib_mtu tmp;
 280         struct mlx4_cmd_mailbox *mailbox;
 281         int err = 0;
 282
 283         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 284         if (IS_ERR(mailbox))
 285                 return PTR_ERR(mailbox);
 286
 287         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 288                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 289                            MLX4_CMD_WRAPPED);
 290         if (err)
 291                 goto out;
 292
 293         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 294                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 295         props->active_speed     = IB_SPEED_QDR;
 296         props->port_cap_flags   = IB_PORT_CM_SUP;
 297         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 298         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 299         props->pkey_tbl_len     = 1;
 300         props->max_mtu          = IB_MTU_4096;
 301         props->max_vl_num       = 2;
 302         props->state            = IB_PORT_DOWN;
 303         props->phys_state       = state_to_phys_state(props->state);
 304         props->active_mtu       = IB_MTU_256;
 305         spin_lock(&iboe->lock);
 306         ndev = iboe->netdevs[port - 1];
 307         if (!ndev)
 308                 goto out_unlock;
 309
 310         tmp = iboe_get_mtu(ndev->mtu);
 311         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 312
 313         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 314                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 315         props->phys_state       = state_to_phys_state(props->state);
 316 out_unlock:
 317         spin_unlock(&iboe->lock);
 318 out:
 319         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 320         return err;
 321 }
 322
 323 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 324                               struct ib_port_attr *props)
 325 {
 326         int err;
 327
 328         memset(props, 0, sizeof *props);
 329
 330         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 331                 ib_link_query_port(ibdev, port, props) :
 332                                 eth_link_query_port(ibdev, port, props);
 333
 334         return err;
 335 }
 336
 337 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 338                                union ib_gid *gid)
 339 {
 340         struct ib_smp *in_mad  = NULL;
 341         struct ib_smp *out_mad = NULL;
 342         int err = -ENOMEM;
 343
 344         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 345         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 346         if (!in_mad || !out_mad)
 347                 goto out;
 348
 349         init_query_mad(in_mad);
 350         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 351         in_mad->attr_mod = cpu_to_be32(port);
 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, out_mad->data + 8, 8);
 358
 359         init_query_mad(in_mad);
 360         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 361         in_mad->attr_mod = cpu_to_be32(index / 8);
 362
 363         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 364         if (err)
 365                 goto out;
 366
 367         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 368
 369 out:
 370         kfree(in_mad);
 371         kfree(out_mad);
 372         return err;
 373 }
 374
 375 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
 376                           union ib_gid *gid)
 377 {
 378         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 379
 380         *gid = dev->iboe.gid_table[port - 1][index];
 381
 382         return 0;
 383 }
 384
 385 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 386                              union ib_gid *gid)
 387 {
 388         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
 389                 return __mlx4_ib_query_gid(ibdev, port, index, gid);
 390         else
 391                 return iboe_query_gid(ibdev, port, index, gid);
 392 }
 393
 394 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 395                               u16 *pkey)
 396 {
 397         struct ib_smp *in_mad  = NULL;
 398         struct ib_smp *out_mad = NULL;
 399         int err = -ENOMEM;
 400
 401         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 402         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 403         if (!in_mad || !out_mad)
 404                 goto out;
 405
 406         init_query_mad(in_mad);
 407         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 408         in_mad->attr_mod = cpu_to_be32(index / 32);
 409
 410         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 411         if (err)
 412                 goto out;
 413
 414         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 415
 416 out:
 417         kfree(in_mad);
 418         kfree(out_mad);
 419         return err;
 420 }
 421
 422 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 423                                  struct ib_device_modify *props)
 424 {
 425         struct mlx4_cmd_mailbox *mailbox;
 426
 427         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 428                 return -EOPNOTSUPP;
 429
 430         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 431                 return 0;
 432
 433         spin_lock(&to_mdev(ibdev)->sm_lock);
 434         memcpy(ibdev->node_desc, props->node_desc, 64);
 435         spin_unlock(&to_mdev(ibdev)->sm_lock);
 436
 437         /*
 438          * If possible, pass node desc to FW, so it can generate
 439          * a 144 trap.  If cmd fails, just ignore.
 440          */
 441         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 442         if (IS_ERR(mailbox))
 443                 return 0;
 444
 445         memset(mailbox->buf, 0, 256);
 446         memcpy(mailbox->buf, props->node_desc, 64);
 447         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 448                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 449
 450         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 451
 452         return 0;
 453 }
 454
 455 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 456                          u32 cap_mask)
 457 {
 458         struct mlx4_cmd_mailbox *mailbox;
 459         int err;
 460         u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 461
 462         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 463         if (IS_ERR(mailbox))
 464                 return PTR_ERR(mailbox);
 465
 466         memset(mailbox->buf, 0, 256);
 467
 468         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 469                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 470                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 471         } else {
 472                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 473                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 474         }
 475
 476         err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
 477                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
 478
 479         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 480         return err;
 481 }
 482
 483 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 484                                struct ib_port_modify *props)
 485 {
 486         struct ib_port_attr attr;
 487         u32 cap_mask;
 488         int err;
 489
 490         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 491
 492         err = mlx4_ib_query_port(ibdev, port, &attr);
 493         if (err)
 494                 goto out;
 495
 496         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 497                 ~props->clr_port_cap_mask;
 498
 499         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 500                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 501                             cap_mask);
 502
 503 out:
 504         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 505         return err;
 506 }
 507
 508 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 509                                                   struct ib_udata *udata)
 510 {
 511         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 512         struct mlx4_ib_ucontext *context;
 513         struct mlx4_ib_alloc_ucontext_resp resp;
 514         int err;
 515
 516         if (!dev->ib_active)
 517                 return ERR_PTR(-EAGAIN);
 518
 519         resp.qp_tab_size      = dev->dev->caps.num_qps;
 520         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 521         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 522
 523         context = kmalloc(sizeof *context, GFP_KERNEL);
 524         if (!context)
 525                 return ERR_PTR(-ENOMEM);
 526
 527         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 528         if (err) {
 529                 kfree(context);
 530                 return ERR_PTR(err);
 531         }
 532
 533         INIT_LIST_HEAD(&context->db_page_list);
 534         mutex_init(&context->db_page_mutex);
 535
 536         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 537         if (err) {
 538                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 539                 kfree(context);
 540                 return ERR_PTR(-EFAULT);
 541         }
 542
 543         return &context->ibucontext;
 544 }
 545
 546 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 547 {
 548         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 549
 550         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 551         kfree(context);
 552
 553         return 0;
 554 }
 555
 556 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 557 {
 558         struct mlx4_ib_dev *dev = to_mdev(context->device);
 559
 560         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 561                 return -EINVAL;
 562
 563         if (vma->vm_pgoff == 0) {
 564                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 565
 566                 if (io_remap_pfn_range(vma, vma->vm_start,
 567                                        to_mucontext(context)->uar.pfn,
 568                                        PAGE_SIZE, vma->vm_page_prot))
 569                         return -EAGAIN;
 570         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 571                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 572
 573                 if (io_remap_pfn_range(vma, vma->vm_start,
 574                                        to_mucontext(context)->uar.pfn +
 575                                        dev->dev->caps.num_uars,
 576                                        PAGE_SIZE, vma->vm_page_prot))
 577                         return -EAGAIN;
 578         } else
 579                 return -EINVAL;
 580
 581         return 0;
 582 }
 583
 584 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 585                                       struct ib_ucontext *context,
 586                                       struct ib_udata *udata)
 587 {
 588         struct mlx4_ib_pd *pd;
 589         int err;
 590
 591         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 592         if (!pd)
 593                 return ERR_PTR(-ENOMEM);
 594
 595         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 596         if (err) {
 597                 kfree(pd);
 598                 return ERR_PTR(err);
 599         }
 600
 601         if (context)
 602                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 603                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 604                         kfree(pd);
 605                         return ERR_PTR(-EFAULT);
 606                 }
 607
 608         return &pd->ibpd;
 609 }
 610
 611 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 612 {
 613         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 614         kfree(pd);
 615
 616         return 0;
 617 }
 618
 619 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
 620                                           struct ib_ucontext *context,
 621                                           struct ib_udata *udata)
 622 {
 623         struct mlx4_ib_xrcd *xrcd;
 624         int err;
 625
 626         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
 627                 return ERR_PTR(-ENOSYS);
 628
 629         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
 630         if (!xrcd)
 631                 return ERR_PTR(-ENOMEM);
 632
 633         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
 634         if (err)
 635                 goto err1;
 636
 637         xrcd->pd = ib_alloc_pd(ibdev);
 638         if (IS_ERR(xrcd->pd)) {
 639                 err = PTR_ERR(xrcd->pd);
 640                 goto err2;
 641         }
 642
 643         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
 644         if (IS_ERR(xrcd->cq)) {
 645                 err = PTR_ERR(xrcd->cq);
 646                 goto err3;
 647         }
 648
 649         return &xrcd->ibxrcd;
 650
 651 err3:
 652         ib_dealloc_pd(xrcd->pd);
 653 err2:
 654         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
 655 err1:
 656         kfree(xrcd);
 657         return ERR_PTR(err);
 658 }
 659
 660 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
 661 {
 662         ib_destroy_cq(to_mxrcd(xrcd)->cq);
 663         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
 664         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
 665         kfree(xrcd);
 666
 667         return 0;
 668 }
 669
 670 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 671 {
 672         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 673         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 674         struct mlx4_ib_gid_entry *ge;
 675
 676         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 677         if (!ge)
 678                 return -ENOMEM;
 679
 680         ge->gid = *gid;
 681         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 682                 ge->port = mqp->port;
 683                 ge->added = 1;
 684         }
 685
 686         mutex_lock(&mqp->mutex);
 687         list_add_tail(&ge->list, &mqp->gid_list);
 688         mutex_unlock(&mqp->mutex);
 689
 690         return 0;
 691 }
 692
 693 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 694                    union ib_gid *gid)
 695 {
 696         u8 mac[6];
 697         struct net_device *ndev;
 698         int ret = 0;
 699
 700         if (!mqp->port)
 701                 return 0;
 702
 703         spin_lock(&mdev->iboe.lock);
 704         ndev = mdev->iboe.netdevs[mqp->port - 1];
 705         if (ndev)
 706                 dev_hold(ndev);
 707         spin_unlock(&mdev->iboe.lock);
 708
 709         if (ndev) {
 710                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 711                 rtnl_lock();
 712                 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
 713                 ret = 1;
 714                 rtnl_unlock();
 715                 dev_put(ndev);
 716         }
 717
 718         return ret;
 719 }
 720
 721 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 722 {
 723         int err;
 724         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 725         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 726
 727         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
 728                                     !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
 729                                     MLX4_PROT_IB_IPV6);
 730         if (err)
 731                 return err;
 732
 733         err = add_gid_entry(ibqp, gid);
 734         if (err)
 735                 goto err_add;
 736
 737         return 0;
 738
 739 err_add:
 740         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 741         return err;
 742 }
 743
 744 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
 745 {
 746         struct mlx4_ib_gid_entry *ge;
 747         struct mlx4_ib_gid_entry *tmp;
 748         struct mlx4_ib_gid_entry *ret = NULL;
 749
 750         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
 751                 if (!memcmp(raw, ge->gid.raw, 16)) {
 752                         ret = ge;
 753                         break;
 754                 }
 755         }
 756
 757         return ret;
 758 }
 759
 760 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 761 {
 762         int err;
 763         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 764         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 765         u8 mac[6];
 766         struct net_device *ndev;
 767         struct mlx4_ib_gid_entry *ge;
 768
 769         err = mlx4_multicast_detach(mdev->dev,
 770                                     &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
 771         if (err)
 772                 return err;
 773
 774         mutex_lock(&mqp->mutex);
 775         ge = find_gid_entry(mqp, gid->raw);
 776         if (ge) {
 777                 spin_lock(&mdev->iboe.lock);
 778                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
 779                 if (ndev)
 780                         dev_hold(ndev);
 781                 spin_unlock(&mdev->iboe.lock);
 782                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
 783                 if (ndev) {
 784                         rtnl_lock();
 785                         dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
 786                         rtnl_unlock();
 787                         dev_put(ndev);
 788                 }
 789                 list_del(&ge->list);
 790                 kfree(ge);
 791         } else
 792                 pr_warn("could not find mgid entry\n");
 793
 794         mutex_unlock(&mqp->mutex);
 795
 796         return 0;
 797 }
 798
 799 static int init_node_data(struct mlx4_ib_dev *dev)
 800 {
 801         struct ib_smp *in_mad  = NULL;
 802         struct ib_smp *out_mad = NULL;
 803         int err = -ENOMEM;
 804
 805         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 806         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 807         if (!in_mad || !out_mad)
 808                 goto out;
 809
 810         init_query_mad(in_mad);
 811         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 812
 813         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 814         if (err)
 815                 goto out;
 816
 817         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 818
 819         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 820
 821         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 822         if (err)
 823                 goto out;
 824
 825         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 826
 827 out:
 828         kfree(in_mad);
 829         kfree(out_mad);
 830         return err;
 831 }
 832
 833 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 834                         char *buf)
 835 {
 836         struct mlx4_ib_dev *dev =
 837                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 838         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 839 }
 840
 841 static ssize_t show_fw_ver(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, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 847                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 848                        (int) dev->dev->caps.fw_ver & 0xffff);
 849 }
 850
 851 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 852                         char *buf)
 853 {
 854         struct mlx4_ib_dev *dev =
 855                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 856         return sprintf(buf, "%x\n", dev->dev->rev_id);
 857 }
 858
 859 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 860                           char *buf)
 861 {
 862         struct mlx4_ib_dev *dev =
 863                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 864         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 865                        dev->dev->board_id);
 866 }
 867
 868 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 869 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 870 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 871 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 872
 873 static struct device_attribute *mlx4_class_attributes[] = {
 874         &dev_attr_hw_rev,
 875         &dev_attr_fw_ver,
 876         &dev_attr_hca_type,
 877         &dev_attr_board_id
 878 };
 879
 880 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
 881 {
 882         memcpy(eui, dev->dev_addr, 3);
 883         memcpy(eui + 5, dev->dev_addr + 3, 3);
 884         if (vlan_id < 0x1000) {
 885                 eui[3] = vlan_id >> 8;
 886                 eui[4] = vlan_id & 0xff;
 887         } else {
 888                 eui[3] = 0xff;
 889                 eui[4] = 0xfe;
 890         }
 891         eui[0] ^= 2;
 892 }
 893
 894 static void update_gids_task(struct work_struct *work)
 895 {
 896         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
 897         struct mlx4_cmd_mailbox *mailbox;
 898         union ib_gid *gids;
 899         int err;
 900         struct mlx4_dev *dev = gw->dev->dev;
 901
 902         mailbox = mlx4_alloc_cmd_mailbox(dev);
 903         if (IS_ERR(mailbox)) {
 904                 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
 905                 return;
 906         }
 907
 908         gids = mailbox->buf;
 909         memcpy(gids, gw->gids, sizeof gw->gids);
 910
 911         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
 912                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 913                        MLX4_CMD_NATIVE);
 914         if (err)
 915                 pr_warn("set port command failed\n");
 916         else {
 917                 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
 918                 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
 919         }
 920
 921         mlx4_free_cmd_mailbox(dev, mailbox);
 922         kfree(gw);
 923 }
 924
 925 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
 926 {
 927         struct net_device *ndev = dev->iboe.netdevs[port - 1];
 928         struct update_gid_work *work;
 929         struct net_device *tmp;
 930         int i;
 931         u8 *hits;
 932         int ret;
 933         union ib_gid gid;
 934         int free;
 935         int found;
 936         int need_update = 0;
 937         u16 vid;
 938
 939         work = kzalloc(sizeof *work, GFP_ATOMIC);
 940         if (!work)
 941                 return -ENOMEM;
 942
 943         hits = kzalloc(128, GFP_ATOMIC);
 944         if (!hits) {
 945                 ret = -ENOMEM;
 946                 goto out;
 947         }
 948
 949         rcu_read_lock();
 950         for_each_netdev_rcu(&init_net, tmp) {
 951                 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
 952                         gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
 953                         vid = rdma_vlan_dev_vlan_id(tmp);
 954                         mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
 955                         found = 0;
 956                         free = -1;
 957                         for (i = 0; i < 128; ++i) {
 958                                 if (free < 0 &&
 959                                     !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 960                                         free = i;
 961                                 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
 962                                         hits[i] = 1;
 963                                         found = 1;
 964                                         break;
 965                                 }
 966                         }
 967
 968                         if (!found) {
 969                                 if (tmp == ndev &&
 970                                     (memcmp(&dev->iboe.gid_table[port - 1][0],
 971                                             &gid, sizeof gid) ||
 972                                      !memcmp(&dev->iboe.gid_table[port - 1][0],
 973                                              &zgid, sizeof gid))) {
 974                                         dev->iboe.gid_table[port - 1][0] = gid;
 975                                         ++need_update;
 976                                         hits[0] = 1;
 977                                 } else if (free >= 0) {
 978                                         dev->iboe.gid_table[port - 1][free] = gid;
 979                                         hits[free] = 1;
 980                                         ++need_update;
 981                                 }
 982                         }
 983                 }
 984         }
 985         rcu_read_unlock();
 986
 987         for (i = 0; i < 128; ++i)
 988                 if (!hits[i]) {
 989                         if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
 990                                 ++need_update;
 991                         dev->iboe.gid_table[port - 1][i] = zgid;
 992                 }
 993
 994         if (need_update) {
 995                 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
 996                 INIT_WORK(&work->work, update_gids_task);
 997                 work->port = port;
 998                 work->dev = dev;
 999                 queue_work(wq, &work->work);
1000         } else
1001                 kfree(work);
1002
1003         kfree(hits);
1004         return 0;
1005
1006 out:
1007         kfree(work);
1008         return ret;
1009 }
1010
1011 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1012 {
1013         switch (event) {
1014         case NETDEV_UP:
1015         case NETDEV_CHANGEADDR:
1016                 update_ipv6_gids(dev, port, 0);
1017                 break;
1018
1019         case NETDEV_DOWN:
1020                 update_ipv6_gids(dev, port, 1);
1021                 dev->iboe.netdevs[port - 1] = NULL;
1022         }
1023 }
1024
1025 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1026 {
1027         update_ipv6_gids(dev, port, 0);
1028 }
1029
1030 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1031 {
1032         update_ipv6_gids(dev, port, 1);
1033 }
1034
1035 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1036                                 void *ptr)
1037 {
1038         struct net_device *dev = ptr;
1039         struct mlx4_ib_dev *ibdev;
1040         struct net_device *oldnd;
1041         struct mlx4_ib_iboe *iboe;
1042         int port;
1043
1044         if (!net_eq(dev_net(dev), &init_net))
1045                 return NOTIFY_DONE;
1046
1047         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1048         iboe = &ibdev->iboe;
1049
1050         spin_lock(&iboe->lock);
1051         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1052                 oldnd = iboe->netdevs[port - 1];
1053                 iboe->netdevs[port - 1] =
1054                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1055                 if (oldnd != iboe->netdevs[port - 1]) {
1056                         if (iboe->netdevs[port - 1])
1057                                 netdev_added(ibdev, port);
1058                         else
1059                                 netdev_removed(ibdev, port);
1060                 }
1061         }
1062
1063         if (dev == iboe->netdevs[0] ||
1064             (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1065                 handle_en_event(ibdev, 1, event);
1066         else if (dev == iboe->netdevs[1]
1067                  || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1068                 handle_en_event(ibdev, 2, event);
1069
1070         spin_unlock(&iboe->lock);
1071
1072         return NOTIFY_DONE;
1073 }
1074
1075 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1076 {
1077         char name[32];
1078         int eq_per_port = 0;
1079         int added_eqs = 0;
1080         int total_eqs = 0;
1081         int i, j, eq;
1082
1083         /* Legacy mode or comp_pool is not large enough */
1084         if (dev->caps.comp_pool == 0 ||
1085             dev->caps.num_ports > dev->caps.comp_pool)
1086                 return;
1087
1088         eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1089                                         dev->caps.num_ports);
1090
1091         /* Init eq table */
1092         added_eqs = 0;
1093         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1094                 added_eqs += eq_per_port;
1095
1096         total_eqs = dev->caps.num_comp_vectors + added_eqs;
1097
1098         ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1099         if (!ibdev->eq_table)
1100                 return;
1101
1102         ibdev->eq_added = added_eqs;
1103
1104         eq = 0;
1105         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1106                 for (j = 0; j < eq_per_port; j++) {
1107                         sprintf(name, "mlx4-ib-%d-%d@%s",
1108                                 i, j, dev->pdev->bus->name);
1109                         /* Set IRQ for specific name (per ring) */
1110                         if (mlx4_assign_eq(dev, name, &ibdev->eq_table[eq])) {
1111                                 /* Use legacy (same as mlx4_en driver) */
1112                                 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1113                                 ibdev->eq_table[eq] =
1114                                         (eq % dev->caps.num_comp_vectors);
1115                         }
1116                         eq++;
1117                 }
1118         }
1119
1120         /* Fill the reset of the vector with legacy EQ */
1121         for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1122                 ibdev->eq_table[eq++] = i;
1123
1124         /* Advertise the new number of EQs to clients */
1125         ibdev->ib_dev.num_comp_vectors = total_eqs;
1126 }
1127
1128 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1129 {
1130         int i;
1131
1132         /* no additional eqs were added */
1133         if (!ibdev->eq_table)
1134                 return;
1135
1136         /* Reset the advertised EQ number */
1137         ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1138
1139         /* Free only the added eqs */
1140         for (i = 0; i < ibdev->eq_added; i++) {
1141                 /* Don't free legacy eqs if used */
1142                 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1143                         continue;
1144                 mlx4_release_eq(dev, ibdev->eq_table[i]);
1145         }
1146
1147         kfree(ibdev->eq_table);
1148 }
1149
1150 static void *mlx4_ib_add(struct mlx4_dev *dev)
1151 {
1152         struct mlx4_ib_dev *ibdev;
1153         int num_ports = 0;
1154         int i, j;
1155         int err;
1156         struct mlx4_ib_iboe *iboe;
1157
1158         pr_info_once("%s", mlx4_ib_version);
1159
1160         if (mlx4_is_mfunc(dev)) {
1161                 pr_warn("IB not yet supported in SRIOV\n");
1162                 return NULL;
1163         }
1164
1165         mlx4_foreach_ib_transport_port(i, dev)
1166                 num_ports++;
1167
1168         /* No point in registering a device with no ports... */
1169         if (num_ports == 0)
1170                 return NULL;
1171
1172         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1173         if (!ibdev) {
1174                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1175                 return NULL;
1176         }
1177
1178         iboe = &ibdev->iboe;
1179
1180         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1181                 goto err_dealloc;
1182
1183         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1184                 goto err_pd;
1185
1186         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1187                                  PAGE_SIZE);
1188         if (!ibdev->uar_map)
1189                 goto err_uar;
1190         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1191
1192         ibdev->dev = dev;
1193
1194         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1195         ibdev->ib_dev.owner             = THIS_MODULE;
1196         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1197         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1198         ibdev->num_ports                = num_ports;
1199         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1200         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1201         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1202
1203         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
1204         ibdev->ib_dev.uverbs_cmd_mask   =
1205                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1206                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1207                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1208                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1209                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1210                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1211                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1212                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1213                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1214                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1215                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1216                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1217                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1218                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1219                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1220                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1221                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
1222                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1223                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1224                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1225                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
1226                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
1227                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1228
1229         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
1230         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
1231         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
1232         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
1233         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
1234         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
1235         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
1236         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
1237         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
1238         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
1239         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
1240         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
1241         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
1242         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
1243         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
1244         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
1245         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
1246         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
1247         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
1248         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
1249         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
1250         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
1251         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
1252         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
1253         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
1254         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
1255         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
1256         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
1257         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
1258         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
1259         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
1260         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
1261         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
1262         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
1263         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
1264         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1265         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1266         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
1267         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
1268         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
1269         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
1270
1271         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
1272         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
1273         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
1274         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
1275
1276         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1277                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1278                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1279                 ibdev->ib_dev.uverbs_cmd_mask |=
1280                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1281                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1282         }
1283
1284         mlx4_ib_alloc_eqs(dev, ibdev);
1285
1286         spin_lock_init(&iboe->lock);
1287
1288         if (init_node_data(ibdev))
1289                 goto err_map;
1290
1291         for (i = 0; i < ibdev->num_ports; ++i) {
1292                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1293                                                 IB_LINK_LAYER_ETHERNET) {
1294                         err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1295                         if (err)
1296                                 ibdev->counters[i] = -1;
1297                 } else
1298                                 ibdev->counters[i] = -1;
1299         }
1300
1301         spin_lock_init(&ibdev->sm_lock);
1302         mutex_init(&ibdev->cap_mask_mutex);
1303
1304         if (ib_register_device(&ibdev->ib_dev, NULL))
1305                 goto err_counter;
1306
1307         if (mlx4_ib_mad_init(ibdev))
1308                 goto err_reg;
1309
1310         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1311                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1312                 err = register_netdevice_notifier(&iboe->nb);
1313                 if (err)
1314                         goto err_reg;
1315         }
1316
1317         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
1318                 if (device_create_file(&ibdev->ib_dev.dev,
1319                                        mlx4_class_attributes[j]))
1320                         goto err_notif;
1321         }
1322
1323         ibdev->ib_active = true;
1324
1325         return ibdev;
1326
1327 err_notif:
1328         if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1329                 pr_warn("failure unregistering notifier\n");
1330         flush_workqueue(wq);
1331
1332 err_reg:
1333         ib_unregister_device(&ibdev->ib_dev);
1334
1335 err_counter:
1336         for (; i; --i)
1337                 if (ibdev->counters[i - 1] != -1)
1338                         mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1339
1340 err_map:
1341         iounmap(ibdev->uar_map);
1342
1343 err_uar:
1344         mlx4_uar_free(dev, &ibdev->priv_uar);
1345
1346 err_pd:
1347         mlx4_pd_free(dev, ibdev->priv_pdn);
1348
1349 err_dealloc:
1350         ib_dealloc_device(&ibdev->ib_dev);
1351
1352         return NULL;
1353 }
1354
1355 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1356 {
1357         struct mlx4_ib_dev *ibdev = ibdev_ptr;
1358         int p;
1359
1360         mlx4_ib_mad_cleanup(ibdev);
1361         ib_unregister_device(&ibdev->ib_dev);
1362         if (ibdev->iboe.nb.notifier_call) {
1363                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1364                         pr_warn("failure unregistering notifier\n");
1365                 ibdev->iboe.nb.notifier_call = NULL;
1366         }
1367         iounmap(ibdev->uar_map);
1368         for (p = 0; p < ibdev->num_ports; ++p)
1369                 if (ibdev->counters[p] != -1)
1370                         mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1371         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1372                 mlx4_CLOSE_PORT(dev, p);
1373
1374         mlx4_ib_free_eqs(dev, ibdev);
1375
1376         mlx4_uar_free(dev, &ibdev->priv_uar);
1377         mlx4_pd_free(dev, ibdev->priv_pdn);
1378         ib_dealloc_device(&ibdev->ib_dev);
1379 }
1380
1381 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1382                           enum mlx4_dev_event event, unsigned long param)
1383 {
1384         struct ib_event ibev;
1385         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1386         struct mlx4_eqe *eqe = NULL;
1387         struct ib_event_work *ew;
1388         int port = 0;
1389
1390         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
1391                 eqe = (struct mlx4_eqe *)param;
1392         else
1393                 port = (u8)param;
1394
1395         if (port > ibdev->num_ports)
1396                 return;
1397
1398         switch (event) {
1399         case MLX4_DEV_EVENT_PORT_UP:
1400                 ibev.event = IB_EVENT_PORT_ACTIVE;
1401                 break;
1402
1403         case MLX4_DEV_EVENT_PORT_DOWN:
1404                 ibev.event = IB_EVENT_PORT_ERR;
1405                 break;
1406
1407         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1408                 ibdev->ib_active = false;
1409                 ibev.event = IB_EVENT_DEVICE_FATAL;
1410                 break;
1411
1412         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
1413                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
1414                 if (!ew) {
1415                         pr_err("failed to allocate memory for events work\n");
1416                         break;
1417                 }
1418
1419                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
1420                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
1421                 ew->ib_dev = ibdev;
1422                 handle_port_mgmt_change_event(&ew->work);
1423                 return;
1424
1425         default:
1426                 return;
1427         }
1428
1429         ibev.device           = ibdev_ptr;
1430         ibev.element.port_num = port;
1431
1432         ib_dispatch_event(&ibev);
1433 }
1434
1435 static struct mlx4_interface mlx4_ib_interface = {
1436         .add            = mlx4_ib_add,
1437         .remove         = mlx4_ib_remove,
1438         .event          = mlx4_ib_event,
1439         .protocol       = MLX4_PROT_IB_IPV6
1440 };
1441
1442 static int __init mlx4_ib_init(void)
1443 {
1444         int err;
1445
1446         wq = create_singlethread_workqueue("mlx4_ib");
1447         if (!wq)
1448                 return -ENOMEM;
1449
1450         err = mlx4_register_interface(&mlx4_ib_interface);
1451         if (err) {
1452                 destroy_workqueue(wq);
1453                 return err;
1454         }
1455
1456         return 0;
1457 }
1458
1459 static void __exit mlx4_ib_cleanup(void)
1460 {
1461         mlx4_unregister_interface(&mlx4_ib_interface);
1462         destroy_workqueue(wq);
1463 }
1464
1465 module_init(mlx4_ib_init);
1466 module_exit(mlx4_ib_cleanup);