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     "1.0"
  48 #define DRV_RELDATE     "April 4, 2008"
  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                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
  95         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
  96                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
  97         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
  98                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
  99         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 100                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 101         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 102                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 103         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 104                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 105         if (dev->dev->caps.max_gso_sz)
 106                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 107         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 108                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 109         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 110             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 111             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 112                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 113
 114         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 115                 0xffffff;
 116         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 117         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 118         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 119
 120         props->max_mr_size         = ~0ull;
 121         props->page_size_cap       = dev->dev->caps.page_size_cap;
 122         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 123         props->max_qp_wr           = dev->dev->caps.max_wqes;
 124         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 125                                          dev->dev->caps.max_rq_sg);
 126         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 127         props->max_cqe             = dev->dev->caps.max_cqes;
 128         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 129         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 130         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 131         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 132         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 133         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 134         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 135         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 136         props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
 137         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 138         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 139                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 140         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 141         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 142         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 143         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 144                                            props->max_mcast_grp;
 145         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 146
 147 out:
 148         kfree(in_mad);
 149         kfree(out_mad);
 150
 151         return err;
 152 }
 153
 154 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 155                               struct ib_port_attr *props)
 156 {
 157         struct ib_smp *in_mad  = NULL;
 158         struct ib_smp *out_mad = NULL;
 159         int err = -ENOMEM;
 160
 161         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 162         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 163         if (!in_mad || !out_mad)
 164                 goto out;
 165
 166         memset(props, 0, sizeof *props);
 167
 168         init_query_mad(in_mad);
 169         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 170         in_mad->attr_mod = cpu_to_be32(port);
 171
 172         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 173         if (err)
 174                 goto out;
 175
 176         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 177         props->lmc              = out_mad->data[34] & 0x7;
 178         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 179         props->sm_sl            = out_mad->data[36] & 0xf;
 180         props->state            = out_mad->data[32] & 0xf;
 181         props->phys_state       = out_mad->data[33] >> 4;
 182         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 183         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 184         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 185         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 186         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 187         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 188         props->active_width     = out_mad->data[31] & 0xf;
 189         props->active_speed     = out_mad->data[35] >> 4;
 190         props->max_mtu          = out_mad->data[41] & 0xf;
 191         props->active_mtu       = out_mad->data[36] >> 4;
 192         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 193         props->max_vl_num       = out_mad->data[37] >> 4;
 194         props->init_type_reply  = out_mad->data[41] >> 4;
 195
 196 out:
 197         kfree(in_mad);
 198         kfree(out_mad);
 199
 200         return err;
 201 }
 202
 203 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 204                              union ib_gid *gid)
 205 {
 206         struct ib_smp *in_mad  = NULL;
 207         struct ib_smp *out_mad = NULL;
 208         int err = -ENOMEM;
 209
 210         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 211         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 212         if (!in_mad || !out_mad)
 213                 goto out;
 214
 215         init_query_mad(in_mad);
 216         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 217         in_mad->attr_mod = cpu_to_be32(port);
 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, out_mad->data + 8, 8);
 224
 225         init_query_mad(in_mad);
 226         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 227         in_mad->attr_mod = cpu_to_be32(index / 8);
 228
 229         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 230         if (err)
 231                 goto out;
 232
 233         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 234
 235 out:
 236         kfree(in_mad);
 237         kfree(out_mad);
 238         return err;
 239 }
 240
 241 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 242                               u16 *pkey)
 243 {
 244         struct ib_smp *in_mad  = NULL;
 245         struct ib_smp *out_mad = NULL;
 246         int err = -ENOMEM;
 247
 248         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 249         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 250         if (!in_mad || !out_mad)
 251                 goto out;
 252
 253         init_query_mad(in_mad);
 254         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 255         in_mad->attr_mod = cpu_to_be32(index / 32);
 256
 257         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 258         if (err)
 259                 goto out;
 260
 261         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 262
 263 out:
 264         kfree(in_mad);
 265         kfree(out_mad);
 266         return err;
 267 }
 268
 269 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 270                                  struct ib_device_modify *props)
 271 {
 272         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 273                 return -EOPNOTSUPP;
 274
 275         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 276                 spin_lock(&to_mdev(ibdev)->sm_lock);
 277                 memcpy(ibdev->node_desc, props->node_desc, 64);
 278                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 279         }
 280
 281         return 0;
 282 }
 283
 284 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 285                          u32 cap_mask)
 286 {
 287         struct mlx4_cmd_mailbox *mailbox;
 288         int err;
 289
 290         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 291         if (IS_ERR(mailbox))
 292                 return PTR_ERR(mailbox);
 293
 294         memset(mailbox->buf, 0, 256);
 295
 296         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 297                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 298                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 299         } else {
 300                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 301                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 302         }
 303
 304         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 305                        MLX4_CMD_TIME_CLASS_B);
 306
 307         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 308         return err;
 309 }
 310
 311 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 312                                struct ib_port_modify *props)
 313 {
 314         struct ib_port_attr attr;
 315         u32 cap_mask;
 316         int err;
 317
 318         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 319
 320         err = mlx4_ib_query_port(ibdev, port, &attr);
 321         if (err)
 322                 goto out;
 323
 324         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 325                 ~props->clr_port_cap_mask;
 326
 327         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 328                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 329                             cap_mask);
 330
 331 out:
 332         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 333         return err;
 334 }
 335
 336 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 337                                                   struct ib_udata *udata)
 338 {
 339         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 340         struct mlx4_ib_ucontext *context;
 341         struct mlx4_ib_alloc_ucontext_resp resp;
 342         int err;
 343
 344         resp.qp_tab_size      = dev->dev->caps.num_qps;
 345         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 346         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 347
 348         context = kmalloc(sizeof *context, GFP_KERNEL);
 349         if (!context)
 350                 return ERR_PTR(-ENOMEM);
 351
 352         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 353         if (err) {
 354                 kfree(context);
 355                 return ERR_PTR(err);
 356         }
 357
 358         INIT_LIST_HEAD(&context->db_page_list);
 359         mutex_init(&context->db_page_mutex);
 360
 361         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 362         if (err) {
 363                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 364                 kfree(context);
 365                 return ERR_PTR(-EFAULT);
 366         }
 367
 368         return &context->ibucontext;
 369 }
 370
 371 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 372 {
 373         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 374
 375         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 376         kfree(context);
 377
 378         return 0;
 379 }
 380
 381 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 382 {
 383         struct mlx4_ib_dev *dev = to_mdev(context->device);
 384
 385         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 386                 return -EINVAL;
 387
 388         if (vma->vm_pgoff == 0) {
 389                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 390
 391                 if (io_remap_pfn_range(vma, vma->vm_start,
 392                                        to_mucontext(context)->uar.pfn,
 393                                        PAGE_SIZE, vma->vm_page_prot))
 394                         return -EAGAIN;
 395         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 396                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
 397                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 398
 399                 if (io_remap_pfn_range(vma, vma->vm_start,
 400                                        to_mucontext(context)->uar.pfn +
 401                                        dev->dev->caps.num_uars,
 402                                        PAGE_SIZE, vma->vm_page_prot))
 403                         return -EAGAIN;
 404         } else
 405                 return -EINVAL;
 406
 407         return 0;
 408 }
 409
 410 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 411                                       struct ib_ucontext *context,
 412                                       struct ib_udata *udata)
 413 {
 414         struct mlx4_ib_pd *pd;
 415         int err;
 416
 417         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 418         if (!pd)
 419                 return ERR_PTR(-ENOMEM);
 420
 421         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 422         if (err) {
 423                 kfree(pd);
 424                 return ERR_PTR(err);
 425         }
 426
 427         if (context)
 428                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 429                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 430                         kfree(pd);
 431                         return ERR_PTR(-EFAULT);
 432                 }
 433
 434         return &pd->ibpd;
 435 }
 436
 437 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 438 {
 439         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 440         kfree(pd);
 441
 442         return 0;
 443 }
 444
 445 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 446 {
 447         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 448                                      &to_mqp(ibqp)->mqp, gid->raw,
 449                                      !!(to_mqp(ibqp)->flags &
 450                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
 451 }
 452
 453 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 454 {
 455         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 456                                      &to_mqp(ibqp)->mqp, gid->raw);
 457 }
 458
 459 static int init_node_data(struct mlx4_ib_dev *dev)
 460 {
 461         struct ib_smp *in_mad  = NULL;
 462         struct ib_smp *out_mad = NULL;
 463         int err = -ENOMEM;
 464
 465         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 466         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 467         if (!in_mad || !out_mad)
 468                 goto out;
 469
 470         init_query_mad(in_mad);
 471         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 472
 473         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 474         if (err)
 475                 goto out;
 476
 477         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 478
 479         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 480
 481         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 482         if (err)
 483                 goto out;
 484
 485         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 486         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 487
 488 out:
 489         kfree(in_mad);
 490         kfree(out_mad);
 491         return err;
 492 }
 493
 494 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 495                         char *buf)
 496 {
 497         struct mlx4_ib_dev *dev =
 498                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 499         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 500 }
 501
 502 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 503                            char *buf)
 504 {
 505         struct mlx4_ib_dev *dev =
 506                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 507         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 508                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 509                        (int) dev->dev->caps.fw_ver & 0xffff);
 510 }
 511
 512 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 513                         char *buf)
 514 {
 515         struct mlx4_ib_dev *dev =
 516                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 517         return sprintf(buf, "%x\n", dev->dev->rev_id);
 518 }
 519
 520 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 521                           char *buf)
 522 {
 523         struct mlx4_ib_dev *dev =
 524                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 525         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 526                        dev->dev->board_id);
 527 }
 528
 529 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 530 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 531 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 532 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 533
 534 static struct device_attribute *mlx4_class_attributes[] = {
 535         &dev_attr_hw_rev,
 536         &dev_attr_fw_ver,
 537         &dev_attr_hca_type,
 538         &dev_attr_board_id
 539 };
 540
 541 static void *mlx4_ib_add(struct mlx4_dev *dev)
 542 {
 543         static int mlx4_ib_version_printed;
 544         struct mlx4_ib_dev *ibdev;
 545         int i;
 546
 547
 548         if (!mlx4_ib_version_printed) {
 549                 printk(KERN_INFO "%s", mlx4_ib_version);
 550                 ++mlx4_ib_version_printed;
 551         }
 552
 553         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 554         if (!ibdev) {
 555                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 556                 return NULL;
 557         }
 558
 559         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 560                 goto err_dealloc;
 561
 562         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 563                 goto err_pd;
 564
 565         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 566         if (!ibdev->uar_map)
 567                 goto err_uar;
 568         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 569
 570         ibdev->dev = dev;
 571
 572         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 573         ibdev->ib_dev.owner             = THIS_MODULE;
 574         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 575         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
 576         ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
 577         ibdev->ib_dev.num_comp_vectors  = 1;
 578         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 579
 580         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 581         ibdev->ib_dev.uverbs_cmd_mask   =
 582                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 583                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 584                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 585                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 586                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 587                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 588                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 589                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 590                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 591                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 592                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 593                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 594                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 595                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 596                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 597                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 598                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 599                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 600                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 601                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 602                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 603
 604         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 605         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 606         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 607         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 608         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 609         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 610         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 611         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 612         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 613         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 614         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 615         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 616         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 617         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 618         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 619         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 620         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 621         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 622         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 623         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 624         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 625         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 626         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 627         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 628         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 629         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 630         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
 631         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
 632         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 633         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 634         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 635         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 636         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 637         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 638         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
 639         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
 640         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
 641         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 642         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 643         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 644
 645         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 646         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 647         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 648         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 649
 650         if (init_node_data(ibdev))
 651                 goto err_map;
 652
 653         spin_lock_init(&ibdev->sm_lock);
 654         mutex_init(&ibdev->cap_mask_mutex);
 655
 656         if (ib_register_device(&ibdev->ib_dev))
 657                 goto err_map;
 658
 659         if (mlx4_ib_mad_init(ibdev))
 660                 goto err_reg;
 661
 662         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 663                 if (device_create_file(&ibdev->ib_dev.dev,
 664                                        mlx4_class_attributes[i]))
 665                         goto err_reg;
 666         }
 667
 668         return ibdev;
 669
 670 err_reg:
 671         ib_unregister_device(&ibdev->ib_dev);
 672
 673 err_map:
 674         iounmap(ibdev->uar_map);
 675
 676 err_uar:
 677         mlx4_uar_free(dev, &ibdev->priv_uar);
 678
 679 err_pd:
 680         mlx4_pd_free(dev, ibdev->priv_pdn);
 681
 682 err_dealloc:
 683         ib_dealloc_device(&ibdev->ib_dev);
 684
 685         return NULL;
 686 }
 687
 688 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 689 {
 690         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 691         int p;
 692
 693         for (p = 1; p <= dev->caps.num_ports; ++p)
 694                 mlx4_CLOSE_PORT(dev, p);
 695
 696         mlx4_ib_mad_cleanup(ibdev);
 697         ib_unregister_device(&ibdev->ib_dev);
 698         iounmap(ibdev->uar_map);
 699         mlx4_uar_free(dev, &ibdev->priv_uar);
 700         mlx4_pd_free(dev, ibdev->priv_pdn);
 701         ib_dealloc_device(&ibdev->ib_dev);
 702 }
 703
 704 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 705                           enum mlx4_dev_event event, int port)
 706 {
 707         struct ib_event ibev;
 708
 709         switch (event) {
 710         case MLX4_DEV_EVENT_PORT_UP:
 711                 ibev.event = IB_EVENT_PORT_ACTIVE;
 712                 break;
 713
 714         case MLX4_DEV_EVENT_PORT_DOWN:
 715                 ibev.event = IB_EVENT_PORT_ERR;
 716                 break;
 717
 718         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 719                 ibev.event = IB_EVENT_DEVICE_FATAL;
 720                 break;
 721
 722         default:
 723                 return;
 724         }
 725
 726         ibev.device           = ibdev_ptr;
 727         ibev.element.port_num = port;
 728
 729         ib_dispatch_event(&ibev);
 730 }
 731
 732 static struct mlx4_interface mlx4_ib_interface = {
 733         .add    = mlx4_ib_add,
 734         .remove = mlx4_ib_remove,
 735         .event  = mlx4_ib_event
 736 };
 737
 738 static int __init mlx4_ib_init(void)
 739 {
 740         return mlx4_register_interface(&mlx4_ib_interface);
 741 }
 742
 743 static void __exit mlx4_ib_cleanup(void)
 744 {
 745         mlx4_unregister_interface(&mlx4_ib_interface);
 746 }
 747
 748 module_init(mlx4_ib_init);
 749 module_exit(mlx4_ib_cleanup);