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
  39 #include <rdma/ib_smi.h>
  40 #include <rdma/ib_user_verbs.h>
  41
  42 #include <linux/mlx4/driver.h>
  43 #include <linux/mlx4/cmd.h>
  44
  45 #include "mlx4_ib.h"
  46 #include "user.h"
  47
  48 #define DRV_NAME        "mlx4_ib"
  49 #define DRV_VERSION     "1.0"
  50 #define DRV_RELDATE     "April 4, 2008"
  51
  52 MODULE_AUTHOR("Roland Dreier");
  53 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  54 MODULE_LICENSE("Dual BSD/GPL");
  55 MODULE_VERSION(DRV_VERSION);
  56
  57 static const char mlx4_ib_version[] =
  58         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  59         DRV_VERSION " (" DRV_RELDATE ")\n";
  60
  61 static void init_query_mad(struct ib_smp *mad)
  62 {
  63         mad->base_version  = 1;
  64         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  65         mad->class_version = 1;
  66         mad->method        = IB_MGMT_METHOD_GET;
  67 }
  68
  69 static int mlx4_ib_query_device(struct ib_device *ibdev,
  70                                 struct ib_device_attr *props)
  71 {
  72         struct mlx4_ib_dev *dev = to_mdev(ibdev);
  73         struct ib_smp *in_mad  = NULL;
  74         struct ib_smp *out_mad = NULL;
  75         int err = -ENOMEM;
  76
  77         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  78         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  79         if (!in_mad || !out_mad)
  80                 goto out;
  81
  82         init_query_mad(in_mad);
  83         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  84
  85         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
  86         if (err)
  87                 goto out;
  88
  89         memset(props, 0, sizeof *props);
  90
  91         props->fw_ver = dev->dev->caps.fw_ver;
  92         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
  93                 IB_DEVICE_PORT_ACTIVE_EVENT             |
  94                 IB_DEVICE_SYS_IMAGE_GUID                |
  95                 IB_DEVICE_RC_RNR_NAK_GEN                |
  96                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
  97         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
  98                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
  99         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 100                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 101         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 102                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 103         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 104                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 105         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 106                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 107         if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
 108                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 109         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 110                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 111         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 112             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 113             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 114                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 115
 116         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 117                 0xffffff;
 118         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 119         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 120         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 121
 122         props->max_mr_size         = ~0ull;
 123         props->page_size_cap       = dev->dev->caps.page_size_cap;
 124         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 125         props->max_qp_wr           = dev->dev->caps.max_wqes;
 126         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 127                                          dev->dev->caps.max_rq_sg);
 128         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 129         props->max_cqe             = dev->dev->caps.max_cqes;
 130         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 131         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 132         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 133         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 134         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 135         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 136         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 137         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 138         props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
 139         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 140         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 141                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 142         props->masked_atomic_cap   = IB_ATOMIC_HCA;
 143         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 144         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 145         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 146         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 147                                            props->max_mcast_grp;
 148         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 149
 150 out:
 151         kfree(in_mad);
 152         kfree(out_mad);
 153
 154         return err;
 155 }
 156
 157 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 158                               struct ib_port_attr *props)
 159 {
 160         struct ib_smp *in_mad  = NULL;
 161         struct ib_smp *out_mad = NULL;
 162         int err = -ENOMEM;
 163
 164         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 165         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 166         if (!in_mad || !out_mad)
 167                 goto out;
 168
 169         memset(props, 0, sizeof *props);
 170
 171         init_query_mad(in_mad);
 172         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 173         in_mad->attr_mod = cpu_to_be32(port);
 174
 175         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 176         if (err)
 177                 goto out;
 178
 179         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 180         props->lmc              = out_mad->data[34] & 0x7;
 181         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 182         props->sm_sl            = out_mad->data[36] & 0xf;
 183         props->state            = out_mad->data[32] & 0xf;
 184         props->phys_state       = out_mad->data[33] >> 4;
 185         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 186         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 187         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 188         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 189         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 190         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 191         props->active_width     = out_mad->data[31] & 0xf;
 192         props->active_speed     = out_mad->data[35] >> 4;
 193         props->max_mtu          = out_mad->data[41] & 0xf;
 194         props->active_mtu       = out_mad->data[36] >> 4;
 195         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 196         props->max_vl_num       = out_mad->data[37] >> 4;
 197         props->init_type_reply  = out_mad->data[41] >> 4;
 198
 199 out:
 200         kfree(in_mad);
 201         kfree(out_mad);
 202
 203         return err;
 204 }
 205
 206 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 207                              union ib_gid *gid)
 208 {
 209         struct ib_smp *in_mad  = NULL;
 210         struct ib_smp *out_mad = NULL;
 211         int err = -ENOMEM;
 212
 213         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 214         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 215         if (!in_mad || !out_mad)
 216                 goto out;
 217
 218         init_query_mad(in_mad);
 219         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 220         in_mad->attr_mod = cpu_to_be32(port);
 221
 222         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 223         if (err)
 224                 goto out;
 225
 226         memcpy(gid->raw, out_mad->data + 8, 8);
 227
 228         init_query_mad(in_mad);
 229         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 230         in_mad->attr_mod = cpu_to_be32(index / 8);
 231
 232         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 233         if (err)
 234                 goto out;
 235
 236         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 237
 238 out:
 239         kfree(in_mad);
 240         kfree(out_mad);
 241         return err;
 242 }
 243
 244 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 245                               u16 *pkey)
 246 {
 247         struct ib_smp *in_mad  = NULL;
 248         struct ib_smp *out_mad = NULL;
 249         int err = -ENOMEM;
 250
 251         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 252         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 253         if (!in_mad || !out_mad)
 254                 goto out;
 255
 256         init_query_mad(in_mad);
 257         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 258         in_mad->attr_mod = cpu_to_be32(index / 32);
 259
 260         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 261         if (err)
 262                 goto out;
 263
 264         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 265
 266 out:
 267         kfree(in_mad);
 268         kfree(out_mad);
 269         return err;
 270 }
 271
 272 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 273                                  struct ib_device_modify *props)
 274 {
 275         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 276                 return -EOPNOTSUPP;
 277
 278         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 279                 spin_lock(&to_mdev(ibdev)->sm_lock);
 280                 memcpy(ibdev->node_desc, props->node_desc, 64);
 281                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 282         }
 283
 284         return 0;
 285 }
 286
 287 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 288                          u32 cap_mask)
 289 {
 290         struct mlx4_cmd_mailbox *mailbox;
 291         int err;
 292
 293         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 294         if (IS_ERR(mailbox))
 295                 return PTR_ERR(mailbox);
 296
 297         memset(mailbox->buf, 0, 256);
 298
 299         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 300                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 301                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 302         } else {
 303                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 304                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 305         }
 306
 307         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 308                        MLX4_CMD_TIME_CLASS_B);
 309
 310         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 311         return err;
 312 }
 313
 314 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 315                                struct ib_port_modify *props)
 316 {
 317         struct ib_port_attr attr;
 318         u32 cap_mask;
 319         int err;
 320
 321         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 322
 323         err = mlx4_ib_query_port(ibdev, port, &attr);
 324         if (err)
 325                 goto out;
 326
 327         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 328                 ~props->clr_port_cap_mask;
 329
 330         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 331                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 332                             cap_mask);
 333
 334 out:
 335         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 336         return err;
 337 }
 338
 339 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 340                                                   struct ib_udata *udata)
 341 {
 342         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 343         struct mlx4_ib_ucontext *context;
 344         struct mlx4_ib_alloc_ucontext_resp resp;
 345         int err;
 346
 347         if (!dev->ib_active)
 348                 return ERR_PTR(-EAGAIN);
 349
 350         resp.qp_tab_size      = dev->dev->caps.num_qps;
 351         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 352         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 353
 354         context = kmalloc(sizeof *context, GFP_KERNEL);
 355         if (!context)
 356                 return ERR_PTR(-ENOMEM);
 357
 358         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 359         if (err) {
 360                 kfree(context);
 361                 return ERR_PTR(err);
 362         }
 363
 364         INIT_LIST_HEAD(&context->db_page_list);
 365         mutex_init(&context->db_page_mutex);
 366
 367         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 368         if (err) {
 369                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 370                 kfree(context);
 371                 return ERR_PTR(-EFAULT);
 372         }
 373
 374         return &context->ibucontext;
 375 }
 376
 377 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 378 {
 379         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 380
 381         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 382         kfree(context);
 383
 384         return 0;
 385 }
 386
 387 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 388 {
 389         struct mlx4_ib_dev *dev = to_mdev(context->device);
 390
 391         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 392                 return -EINVAL;
 393
 394         if (vma->vm_pgoff == 0) {
 395                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 396
 397                 if (io_remap_pfn_range(vma, vma->vm_start,
 398                                        to_mucontext(context)->uar.pfn,
 399                                        PAGE_SIZE, vma->vm_page_prot))
 400                         return -EAGAIN;
 401         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 402                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 403
 404                 if (io_remap_pfn_range(vma, vma->vm_start,
 405                                        to_mucontext(context)->uar.pfn +
 406                                        dev->dev->caps.num_uars,
 407                                        PAGE_SIZE, vma->vm_page_prot))
 408                         return -EAGAIN;
 409         } else
 410                 return -EINVAL;
 411
 412         return 0;
 413 }
 414
 415 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 416                                       struct ib_ucontext *context,
 417                                       struct ib_udata *udata)
 418 {
 419         struct mlx4_ib_pd *pd;
 420         int err;
 421
 422         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 423         if (!pd)
 424                 return ERR_PTR(-ENOMEM);
 425
 426         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 427         if (err) {
 428                 kfree(pd);
 429                 return ERR_PTR(err);
 430         }
 431
 432         if (context)
 433                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 434                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 435                         kfree(pd);
 436                         return ERR_PTR(-EFAULT);
 437                 }
 438
 439         return &pd->ibpd;
 440 }
 441
 442 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 443 {
 444         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 445         kfree(pd);
 446
 447         return 0;
 448 }
 449
 450 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 451 {
 452         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 453                                      &to_mqp(ibqp)->mqp, gid->raw,
 454                                      !!(to_mqp(ibqp)->flags &
 455                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
 456 }
 457
 458 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 459 {
 460         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 461                                      &to_mqp(ibqp)->mqp, gid->raw);
 462 }
 463
 464 static int init_node_data(struct mlx4_ib_dev *dev)
 465 {
 466         struct ib_smp *in_mad  = NULL;
 467         struct ib_smp *out_mad = NULL;
 468         int err = -ENOMEM;
 469
 470         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 471         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 472         if (!in_mad || !out_mad)
 473                 goto out;
 474
 475         init_query_mad(in_mad);
 476         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 477
 478         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 479         if (err)
 480                 goto out;
 481
 482         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 483
 484         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 485
 486         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 487         if (err)
 488                 goto out;
 489
 490         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 491         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 492
 493 out:
 494         kfree(in_mad);
 495         kfree(out_mad);
 496         return err;
 497 }
 498
 499 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 500                         char *buf)
 501 {
 502         struct mlx4_ib_dev *dev =
 503                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 504         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 505 }
 506
 507 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 508                            char *buf)
 509 {
 510         struct mlx4_ib_dev *dev =
 511                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 512         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 513                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 514                        (int) dev->dev->caps.fw_ver & 0xffff);
 515 }
 516
 517 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 518                         char *buf)
 519 {
 520         struct mlx4_ib_dev *dev =
 521                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 522         return sprintf(buf, "%x\n", dev->dev->rev_id);
 523 }
 524
 525 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 526                           char *buf)
 527 {
 528         struct mlx4_ib_dev *dev =
 529                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 530         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 531                        dev->dev->board_id);
 532 }
 533
 534 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 535 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 536 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 537 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 538
 539 static struct device_attribute *mlx4_class_attributes[] = {
 540         &dev_attr_hw_rev,
 541         &dev_attr_fw_ver,
 542         &dev_attr_hca_type,
 543         &dev_attr_board_id
 544 };
 545
 546 static void *mlx4_ib_add(struct mlx4_dev *dev)
 547 {
 548         struct mlx4_ib_dev *ibdev;
 549         int num_ports = 0;
 550         int i;
 551
 552         printk_once(KERN_INFO "%s", mlx4_ib_version);
 553
 554         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 555                 num_ports++;
 556
 557         /* No point in registering a device with no ports... */
 558         if (num_ports == 0)
 559                 return NULL;
 560
 561         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 562         if (!ibdev) {
 563                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 564                 return NULL;
 565         }
 566
 567         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 568                 goto err_dealloc;
 569
 570         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 571                 goto err_pd;
 572
 573         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 574         if (!ibdev->uar_map)
 575                 goto err_uar;
 576         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 577
 578         ibdev->dev = dev;
 579
 580         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 581         ibdev->ib_dev.owner             = THIS_MODULE;
 582         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 583         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
 584         ibdev->num_ports                = num_ports;
 585         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
 586         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
 587         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 588
 589         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 590         ibdev->ib_dev.uverbs_cmd_mask   =
 591                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 592                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 593                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 594                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 595                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 596                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 597                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 598                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 599                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 600                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 601                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 602                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 603                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 604                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 605                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 606                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 607                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 608                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 609                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 610                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 611                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 612
 613         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 614         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 615         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 616         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 617         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 618         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 619         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 620         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 621         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 622         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 623         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 624         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 625         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 626         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 627         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 628         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 629         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 630         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 631         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 632         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 633         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 634         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 635         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 636         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 637         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 638         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 639         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
 640         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
 641         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 642         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 643         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 644         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 645         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 646         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 647         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
 648         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
 649         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
 650         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 651         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 652         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 653
 654         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 655         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 656         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 657         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 658
 659         if (init_node_data(ibdev))
 660                 goto err_map;
 661
 662         spin_lock_init(&ibdev->sm_lock);
 663         mutex_init(&ibdev->cap_mask_mutex);
 664
 665         if (ib_register_device(&ibdev->ib_dev, NULL))
 666                 goto err_map;
 667
 668         if (mlx4_ib_mad_init(ibdev))
 669                 goto err_reg;
 670
 671         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 672                 if (device_create_file(&ibdev->ib_dev.dev,
 673                                        mlx4_class_attributes[i]))
 674                         goto err_reg;
 675         }
 676
 677         ibdev->ib_active = true;
 678
 679         return ibdev;
 680
 681 err_reg:
 682         ib_unregister_device(&ibdev->ib_dev);
 683
 684 err_map:
 685         iounmap(ibdev->uar_map);
 686
 687 err_uar:
 688         mlx4_uar_free(dev, &ibdev->priv_uar);
 689
 690 err_pd:
 691         mlx4_pd_free(dev, ibdev->priv_pdn);
 692
 693 err_dealloc:
 694         ib_dealloc_device(&ibdev->ib_dev);
 695
 696         return NULL;
 697 }
 698
 699 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 700 {
 701         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 702         int p;
 703
 704         mlx4_ib_mad_cleanup(ibdev);
 705         ib_unregister_device(&ibdev->ib_dev);
 706
 707         for (p = 1; p <= ibdev->num_ports; ++p)
 708                 mlx4_CLOSE_PORT(dev, p);
 709
 710         iounmap(ibdev->uar_map);
 711         mlx4_uar_free(dev, &ibdev->priv_uar);
 712         mlx4_pd_free(dev, ibdev->priv_pdn);
 713         ib_dealloc_device(&ibdev->ib_dev);
 714 }
 715
 716 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 717                           enum mlx4_dev_event event, int port)
 718 {
 719         struct ib_event ibev;
 720         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
 721
 722         if (port > ibdev->num_ports)
 723                 return;
 724
 725         switch (event) {
 726         case MLX4_DEV_EVENT_PORT_UP:
 727                 ibev.event = IB_EVENT_PORT_ACTIVE;
 728                 break;
 729
 730         case MLX4_DEV_EVENT_PORT_DOWN:
 731                 ibev.event = IB_EVENT_PORT_ERR;
 732                 break;
 733
 734         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 735                 ibdev->ib_active = false;
 736                 ibev.event = IB_EVENT_DEVICE_FATAL;
 737                 break;
 738
 739         default:
 740                 return;
 741         }
 742
 743         ibev.device           = ibdev_ptr;
 744         ibev.element.port_num = port;
 745
 746         ib_dispatch_event(&ibev);
 747 }
 748
 749 static struct mlx4_interface mlx4_ib_interface = {
 750         .add    = mlx4_ib_add,
 751         .remove = mlx4_ib_remove,
 752         .event  = mlx4_ib_event
 753 };
 754
 755 static int __init mlx4_ib_init(void)
 756 {
 757         return mlx4_register_interface(&mlx4_ib_interface);
 758 }
 759
 760 static void __exit mlx4_ib_cleanup(void)
 761 {
 762         mlx4_unregister_interface(&mlx4_ib_interface);
 763 }
 764
 765 module_init(mlx4_ib_init);
 766 module_exit(mlx4_ib_cleanup);