drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/errno.h>
  36
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_user_verbs.h>
  39
  40 #include <linux/mlx4/driver.h>
  41 #include <linux/mlx4/cmd.h>
  42
  43 #include "mlx4_ib.h"
  44 #include "user.h"
  45
  46 #define DRV_NAME        "mlx4_ib"
  47 #define DRV_VERSION     "0.01"
  48 #define DRV_RELDATE     "May 1, 2006"
  49
  50 MODULE_AUTHOR("Roland Dreier");
  51 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  52 MODULE_LICENSE("Dual BSD/GPL");
  53 MODULE_VERSION(DRV_VERSION);
  54
  55 static const char mlx4_ib_version[] =
  56         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  57         DRV_VERSION " (" DRV_RELDATE ")\n";
  58
  59 static void init_query_mad(struct ib_smp *mad)
  60 {
  61         mad->base_version  = 1;
  62         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  63         mad->class_version = 1;
  64         mad->method        = IB_MGMT_METHOD_GET;
  65 }
  66
  67 static int mlx4_ib_query_device(struct ib_device *ibdev,
  68                                 struct ib_device_attr *props)
  69 {
  70         struct mlx4_ib_dev *dev = to_mdev(ibdev);
  71         struct ib_smp *in_mad  = NULL;
  72         struct ib_smp *out_mad = NULL;
  73         int err = -ENOMEM;
  74
  75         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  76         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  77         if (!in_mad || !out_mad)
  78                 goto out;
  79
  80         init_query_mad(in_mad);
  81         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  82
  83         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
  84         if (err)
  85                 goto out;
  86
  87         memset(props, 0, sizeof *props);
  88
  89         props->fw_ver = dev->dev->caps.fw_ver;
  90         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
  91                 IB_DEVICE_PORT_ACTIVE_EVENT             |
  92                 IB_DEVICE_SYS_IMAGE_GUID                |
  93                 IB_DEVICE_RC_RNR_NAK_GEN;
  94         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
  95                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
  96         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
  97                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
  98         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
  99                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 100         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 101                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 102         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 103                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 104
 105         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 106                 0xffffff;
 107         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 108         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 109         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 110
 111         props->max_mr_size         = ~0ull;
 112         props->page_size_cap       = dev->dev->caps.page_size_cap;
 113         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 114         props->max_qp_wr           = dev->dev->caps.max_wqes;
 115         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 116                                          dev->dev->caps.max_rq_sg);
 117         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 118         props->max_cqe             = dev->dev->caps.max_cqes;
 119         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 120         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 121         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 122         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 123         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 124         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 125         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 126         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 127         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 128         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 129                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 130         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 131         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 132         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 133         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 134                                            props->max_mcast_grp;
 135         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 136
 137 out:
 138         kfree(in_mad);
 139         kfree(out_mad);
 140
 141         return err;
 142 }
 143
 144 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 145                               struct ib_port_attr *props)
 146 {
 147         struct ib_smp *in_mad  = NULL;
 148         struct ib_smp *out_mad = NULL;
 149         int err = -ENOMEM;
 150
 151         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 152         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 153         if (!in_mad || !out_mad)
 154                 goto out;
 155
 156         memset(props, 0, sizeof *props);
 157
 158         init_query_mad(in_mad);
 159         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 160         in_mad->attr_mod = cpu_to_be32(port);
 161
 162         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 163         if (err)
 164                 goto out;
 165
 166         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 167         props->lmc              = out_mad->data[34] & 0x7;
 168         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 169         props->sm_sl            = out_mad->data[36] & 0xf;
 170         props->state            = out_mad->data[32] & 0xf;
 171         props->phys_state       = out_mad->data[33] >> 4;
 172         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 173         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 174         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 175         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 176         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 177         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 178         props->active_width     = out_mad->data[31] & 0xf;
 179         props->active_speed     = out_mad->data[35] >> 4;
 180         props->max_mtu          = out_mad->data[41] & 0xf;
 181         props->active_mtu       = out_mad->data[36] >> 4;
 182         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 183         props->max_vl_num       = out_mad->data[37] >> 4;
 184         props->init_type_reply  = out_mad->data[41] >> 4;
 185
 186 out:
 187         kfree(in_mad);
 188         kfree(out_mad);
 189
 190         return err;
 191 }
 192
 193 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 194                              union ib_gid *gid)
 195 {
 196         struct ib_smp *in_mad  = NULL;
 197         struct ib_smp *out_mad = NULL;
 198         int err = -ENOMEM;
 199
 200         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 201         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 202         if (!in_mad || !out_mad)
 203                 goto out;
 204
 205         init_query_mad(in_mad);
 206         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 207         in_mad->attr_mod = cpu_to_be32(port);
 208
 209         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 210         if (err)
 211                 goto out;
 212
 213         memcpy(gid->raw, out_mad->data + 8, 8);
 214
 215         init_query_mad(in_mad);
 216         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 217         in_mad->attr_mod = cpu_to_be32(index / 8);
 218
 219         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 220         if (err)
 221                 goto out;
 222
 223         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 224
 225 out:
 226         kfree(in_mad);
 227         kfree(out_mad);
 228         return err;
 229 }
 230
 231 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 232                               u16 *pkey)
 233 {
 234         struct ib_smp *in_mad  = NULL;
 235         struct ib_smp *out_mad = NULL;
 236         int err = -ENOMEM;
 237
 238         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 239         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 240         if (!in_mad || !out_mad)
 241                 goto out;
 242
 243         init_query_mad(in_mad);
 244         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 245         in_mad->attr_mod = cpu_to_be32(index / 32);
 246
 247         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 248         if (err)
 249                 goto out;
 250
 251         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 252
 253 out:
 254         kfree(in_mad);
 255         kfree(out_mad);
 256         return err;
 257 }
 258
 259 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 260                                  struct ib_device_modify *props)
 261 {
 262         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 263                 return -EOPNOTSUPP;
 264
 265         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 266                 spin_lock(&to_mdev(ibdev)->sm_lock);
 267                 memcpy(ibdev->node_desc, props->node_desc, 64);
 268                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 269         }
 270
 271         return 0;
 272 }
 273
 274 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 275                          u32 cap_mask)
 276 {
 277         struct mlx4_cmd_mailbox *mailbox;
 278         int err;
 279
 280         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 281         if (IS_ERR(mailbox))
 282                 return PTR_ERR(mailbox);
 283
 284         memset(mailbox->buf, 0, 256);
 285
 286         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 287                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 288                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 289         } else {
 290                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 291                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 292         }
 293
 294         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 295                        MLX4_CMD_TIME_CLASS_B);
 296
 297         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 298         return err;
 299 }
 300
 301 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 302                                struct ib_port_modify *props)
 303 {
 304         struct ib_port_attr attr;
 305         u32 cap_mask;
 306         int err;
 307
 308         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 309
 310         err = mlx4_ib_query_port(ibdev, port, &attr);
 311         if (err)
 312                 goto out;
 313
 314         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 315                 ~props->clr_port_cap_mask;
 316
 317         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 318                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 319                             cap_mask);
 320
 321 out:
 322         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 323         return err;
 324 }
 325
 326 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 327                                                   struct ib_udata *udata)
 328 {
 329         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 330         struct mlx4_ib_ucontext *context;
 331         struct mlx4_ib_alloc_ucontext_resp resp;
 332         int err;
 333
 334         resp.qp_tab_size      = dev->dev->caps.num_qps;
 335         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 336         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 337
 338         context = kmalloc(sizeof *context, GFP_KERNEL);
 339         if (!context)
 340                 return ERR_PTR(-ENOMEM);
 341
 342         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 343         if (err) {
 344                 kfree(context);
 345                 return ERR_PTR(err);
 346         }
 347
 348         INIT_LIST_HEAD(&context->db_page_list);
 349         mutex_init(&context->db_page_mutex);
 350
 351         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 352         if (err) {
 353                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 354                 kfree(context);
 355                 return ERR_PTR(-EFAULT);
 356         }
 357
 358         return &context->ibucontext;
 359 }
 360
 361 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 362 {
 363         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 364
 365         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 366         kfree(context);
 367
 368         return 0;
 369 }
 370
 371 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 372 {
 373         struct mlx4_ib_dev *dev = to_mdev(context->device);
 374
 375         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 376                 return -EINVAL;
 377
 378         if (vma->vm_pgoff == 0) {
 379                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 380
 381                 if (io_remap_pfn_range(vma, vma->vm_start,
 382                                        to_mucontext(context)->uar.pfn,
 383                                        PAGE_SIZE, vma->vm_page_prot))
 384                         return -EAGAIN;
 385         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 386                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
 387                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 388
 389                 if (io_remap_pfn_range(vma, vma->vm_start,
 390                                        to_mucontext(context)->uar.pfn +
 391                                        dev->dev->caps.num_uars,
 392                                        PAGE_SIZE, vma->vm_page_prot))
 393                         return -EAGAIN;
 394         } else
 395                 return -EINVAL;
 396
 397         return 0;
 398 }
 399
 400 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 401                                       struct ib_ucontext *context,
 402                                       struct ib_udata *udata)
 403 {
 404         struct mlx4_ib_pd *pd;
 405         int err;
 406
 407         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 408         if (!pd)
 409                 return ERR_PTR(-ENOMEM);
 410
 411         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 412         if (err) {
 413                 kfree(pd);
 414                 return ERR_PTR(err);
 415         }
 416
 417         if (context)
 418                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 419                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 420                         kfree(pd);
 421                         return ERR_PTR(-EFAULT);
 422                 }
 423
 424         return &pd->ibpd;
 425 }
 426
 427 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 428 {
 429         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 430         kfree(pd);
 431
 432         return 0;
 433 }
 434
 435 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 436 {
 437         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 438                                      &to_mqp(ibqp)->mqp, gid->raw);
 439 }
 440
 441 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 442 {
 443         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 444                                      &to_mqp(ibqp)->mqp, gid->raw);
 445 }
 446
 447 static int init_node_data(struct mlx4_ib_dev *dev)
 448 {
 449         struct ib_smp *in_mad  = NULL;
 450         struct ib_smp *out_mad = NULL;
 451         int err = -ENOMEM;
 452
 453         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 454         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 455         if (!in_mad || !out_mad)
 456                 goto out;
 457
 458         init_query_mad(in_mad);
 459         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 460
 461         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 462         if (err)
 463                 goto out;
 464
 465         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 466
 467         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 468
 469         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 470         if (err)
 471                 goto out;
 472
 473         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 474         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 475
 476 out:
 477         kfree(in_mad);
 478         kfree(out_mad);
 479         return err;
 480 }
 481
 482 static ssize_t show_hca(struct class_device *cdev, char *buf)
 483 {
 484         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 485         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 486 }
 487
 488 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
 489 {
 490         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 491         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 492                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 493                        (int) dev->dev->caps.fw_ver & 0xffff);
 494 }
 495
 496 static ssize_t show_rev(struct class_device *cdev, char *buf)
 497 {
 498         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 499         return sprintf(buf, "%x\n", dev->dev->rev_id);
 500 }
 501
 502 static ssize_t show_board(struct class_device *cdev, char *buf)
 503 {
 504         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 505         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
 506 }
 507
 508 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 509 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 510 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 511 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 512
 513 static struct class_device_attribute *mlx4_class_attributes[] = {
 514         &class_device_attr_hw_rev,
 515         &class_device_attr_fw_ver,
 516         &class_device_attr_hca_type,
 517         &class_device_attr_board_id
 518 };
 519
 520 static void *mlx4_ib_add(struct mlx4_dev *dev)
 521 {
 522         static int mlx4_ib_version_printed;
 523         struct mlx4_ib_dev *ibdev;
 524         int i;
 525
 526
 527         if (!mlx4_ib_version_printed) {
 528                 printk(KERN_INFO "%s", mlx4_ib_version);
 529                 ++mlx4_ib_version_printed;
 530         }
 531
 532         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 533         if (!ibdev) {
 534                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 535                 return NULL;
 536         }
 537
 538         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 539                 goto err_dealloc;
 540
 541         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 542                 goto err_pd;
 543
 544         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 545         if (!ibdev->uar_map)
 546                 goto err_uar;
 547         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 548
 549         INIT_LIST_HEAD(&ibdev->pgdir_list);
 550         mutex_init(&ibdev->pgdir_mutex);
 551
 552         ibdev->dev = dev;
 553
 554         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 555         ibdev->ib_dev.owner             = THIS_MODULE;
 556         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 557         ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
 558         ibdev->ib_dev.num_comp_vectors  = 1;
 559         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 560
 561         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 562         ibdev->ib_dev.uverbs_cmd_mask   =
 563                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 564                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 565                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 566                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 567                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 568                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 569                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 570                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 571                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 572                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 573                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 574                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 575                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 576                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 577                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 578                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 579                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 580                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 581                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 582                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 583
 584         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 585         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 586         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 587         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 588         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 589         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 590         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 591         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 592         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 593         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 594         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 595         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 596         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 597         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 598         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 599         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 600         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 601         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 602         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 603         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 604         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 605         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 606         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 607         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 608         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 609         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 610         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 611         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 612         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 613         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 614         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 615         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 616         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 617         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 618         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 619
 620         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 621         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 622         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 623         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 624
 625         if (init_node_data(ibdev))
 626                 goto err_map;
 627
 628         spin_lock_init(&ibdev->sm_lock);
 629         mutex_init(&ibdev->cap_mask_mutex);
 630
 631         if (ib_register_device(&ibdev->ib_dev))
 632                 goto err_map;
 633
 634         if (mlx4_ib_mad_init(ibdev))
 635                 goto err_reg;
 636
 637         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 638                 if (class_device_create_file(&ibdev->ib_dev.class_dev,
 639                                                mlx4_class_attributes[i]))
 640                         goto err_reg;
 641         }
 642
 643         return ibdev;
 644
 645 err_reg:
 646         ib_unregister_device(&ibdev->ib_dev);
 647
 648 err_map:
 649         iounmap(ibdev->uar_map);
 650
 651 err_uar:
 652         mlx4_uar_free(dev, &ibdev->priv_uar);
 653
 654 err_pd:
 655         mlx4_pd_free(dev, ibdev->priv_pdn);
 656
 657 err_dealloc:
 658         ib_dealloc_device(&ibdev->ib_dev);
 659
 660         return NULL;
 661 }
 662
 663 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 664 {
 665         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 666         int p;
 667
 668         for (p = 1; p <= dev->caps.num_ports; ++p)
 669                 mlx4_CLOSE_PORT(dev, p);
 670
 671         mlx4_ib_mad_cleanup(ibdev);
 672         ib_unregister_device(&ibdev->ib_dev);
 673         iounmap(ibdev->uar_map);
 674         mlx4_uar_free(dev, &ibdev->priv_uar);
 675         mlx4_pd_free(dev, ibdev->priv_pdn);
 676         ib_dealloc_device(&ibdev->ib_dev);
 677 }
 678
 679 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 680                           enum mlx4_dev_event event, int port)
 681 {
 682         struct ib_event ibev;
 683
 684         switch (event) {
 685         case MLX4_DEV_EVENT_PORT_UP:
 686                 ibev.event = IB_EVENT_PORT_ACTIVE;
 687                 break;
 688
 689         case MLX4_DEV_EVENT_PORT_DOWN:
 690                 ibev.event = IB_EVENT_PORT_ERR;
 691                 break;
 692
 693         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 694                 ibev.event = IB_EVENT_DEVICE_FATAL;
 695                 break;
 696
 697         default:
 698                 return;
 699         }
 700
 701         ibev.device           = ibdev_ptr;
 702         ibev.element.port_num = port;
 703
 704         ib_dispatch_event(&ibev);
 705 }
 706
 707 static struct mlx4_interface mlx4_ib_interface = {
 708         .add    = mlx4_ib_add,
 709         .remove = mlx4_ib_remove,
 710         .event  = mlx4_ib_event
 711 };
 712
 713 static int __init mlx4_ib_init(void)
 714 {
 715         return mlx4_register_interface(&mlx4_ib_interface);
 716 }
 717
 718 static void __exit mlx4_ib_cleanup(void)
 719 {
 720         mlx4_unregister_interface(&mlx4_ib_interface);
 721 }
 722
 723 module_init(mlx4_ib_init);
 724 module_exit(mlx4_ib_cleanup);