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 = MLX4_MAX_FAST_REG_PAGES;
 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         struct mlx4_cmd_mailbox *mailbox;
 276
 277         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 278                 return -EOPNOTSUPP;
 279
 280         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 281                 return 0;
 282
 283         spin_lock(&to_mdev(ibdev)->sm_lock);
 284         memcpy(ibdev->node_desc, props->node_desc, 64);
 285         spin_unlock(&to_mdev(ibdev)->sm_lock);
 286
 287         /*
 288          * If possible, pass node desc to FW, so it can generate
 289          * a 144 trap.  If cmd fails, just ignore.
 290          */
 291         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 292         if (IS_ERR(mailbox))
 293                 return 0;
 294
 295         memset(mailbox->buf, 0, 256);
 296         memcpy(mailbox->buf, props->node_desc, 64);
 297         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 298                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);
 299
 300         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 301
 302         return 0;
 303 }
 304
 305 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 306                          u32 cap_mask)
 307 {
 308         struct mlx4_cmd_mailbox *mailbox;
 309         int err;
 310
 311         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 312         if (IS_ERR(mailbox))
 313                 return PTR_ERR(mailbox);
 314
 315         memset(mailbox->buf, 0, 256);
 316
 317         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 318                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 319                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 320         } else {
 321                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 322                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 323         }
 324
 325         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 326                        MLX4_CMD_TIME_CLASS_B);
 327
 328         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 329         return err;
 330 }
 331
 332 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 333                                struct ib_port_modify *props)
 334 {
 335         struct ib_port_attr attr;
 336         u32 cap_mask;
 337         int err;
 338
 339         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 340
 341         err = mlx4_ib_query_port(ibdev, port, &attr);
 342         if (err)
 343                 goto out;
 344
 345         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 346                 ~props->clr_port_cap_mask;
 347
 348         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 349                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 350                             cap_mask);
 351
 352 out:
 353         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 354         return err;
 355 }
 356
 357 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 358                                                   struct ib_udata *udata)
 359 {
 360         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 361         struct mlx4_ib_ucontext *context;
 362         struct mlx4_ib_alloc_ucontext_resp resp;
 363         int err;
 364
 365         if (!dev->ib_active)
 366                 return ERR_PTR(-EAGAIN);
 367
 368         resp.qp_tab_size      = dev->dev->caps.num_qps;
 369         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 370         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 371
 372         context = kmalloc(sizeof *context, GFP_KERNEL);
 373         if (!context)
 374                 return ERR_PTR(-ENOMEM);
 375
 376         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 377         if (err) {
 378                 kfree(context);
 379                 return ERR_PTR(err);
 380         }
 381
 382         INIT_LIST_HEAD(&context->db_page_list);
 383         mutex_init(&context->db_page_mutex);
 384
 385         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 386         if (err) {
 387                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 388                 kfree(context);
 389                 return ERR_PTR(-EFAULT);
 390         }
 391
 392         return &context->ibucontext;
 393 }
 394
 395 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 396 {
 397         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 398
 399         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 400         kfree(context);
 401
 402         return 0;
 403 }
 404
 405 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 406 {
 407         struct mlx4_ib_dev *dev = to_mdev(context->device);
 408
 409         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 410                 return -EINVAL;
 411
 412         if (vma->vm_pgoff == 0) {
 413                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 414
 415                 if (io_remap_pfn_range(vma, vma->vm_start,
 416                                        to_mucontext(context)->uar.pfn,
 417                                        PAGE_SIZE, vma->vm_page_prot))
 418                         return -EAGAIN;
 419         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 420                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 421
 422                 if (io_remap_pfn_range(vma, vma->vm_start,
 423                                        to_mucontext(context)->uar.pfn +
 424                                        dev->dev->caps.num_uars,
 425                                        PAGE_SIZE, vma->vm_page_prot))
 426                         return -EAGAIN;
 427         } else
 428                 return -EINVAL;
 429
 430         return 0;
 431 }
 432
 433 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 434                                       struct ib_ucontext *context,
 435                                       struct ib_udata *udata)
 436 {
 437         struct mlx4_ib_pd *pd;
 438         int err;
 439
 440         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 441         if (!pd)
 442                 return ERR_PTR(-ENOMEM);
 443
 444         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 445         if (err) {
 446                 kfree(pd);
 447                 return ERR_PTR(err);
 448         }
 449
 450         if (context)
 451                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 452                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 453                         kfree(pd);
 454                         return ERR_PTR(-EFAULT);
 455                 }
 456
 457         return &pd->ibpd;
 458 }
 459
 460 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 461 {
 462         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 463         kfree(pd);
 464
 465         return 0;
 466 }
 467
 468 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 469 {
 470         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 471                                      &to_mqp(ibqp)->mqp, gid->raw,
 472                                      !!(to_mqp(ibqp)->flags &
 473                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
 474 }
 475
 476 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 477 {
 478         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 479                                      &to_mqp(ibqp)->mqp, gid->raw);
 480 }
 481
 482 static int init_node_data(struct mlx4_ib_dev *dev)
 483 {
 484         struct ib_smp *in_mad  = NULL;
 485         struct ib_smp *out_mad = NULL;
 486         int err = -ENOMEM;
 487
 488         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 489         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 490         if (!in_mad || !out_mad)
 491                 goto out;
 492
 493         init_query_mad(in_mad);
 494         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 495
 496         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 497         if (err)
 498                 goto out;
 499
 500         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 501
 502         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 503
 504         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 505         if (err)
 506                 goto out;
 507
 508         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 509         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 510
 511 out:
 512         kfree(in_mad);
 513         kfree(out_mad);
 514         return err;
 515 }
 516
 517 static ssize_t show_hca(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, "MT%d\n", dev->dev->pdev->device);
 523 }
 524
 525 static ssize_t show_fw_ver(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, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 531                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 532                        (int) dev->dev->caps.fw_ver & 0xffff);
 533 }
 534
 535 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 536                         char *buf)
 537 {
 538         struct mlx4_ib_dev *dev =
 539                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 540         return sprintf(buf, "%x\n", dev->dev->rev_id);
 541 }
 542
 543 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 544                           char *buf)
 545 {
 546         struct mlx4_ib_dev *dev =
 547                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 548         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 549                        dev->dev->board_id);
 550 }
 551
 552 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 553 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 554 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 555 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 556
 557 static struct device_attribute *mlx4_class_attributes[] = {
 558         &dev_attr_hw_rev,
 559         &dev_attr_fw_ver,
 560         &dev_attr_hca_type,
 561         &dev_attr_board_id
 562 };
 563
 564 static void *mlx4_ib_add(struct mlx4_dev *dev)
 565 {
 566         struct mlx4_ib_dev *ibdev;
 567         int num_ports = 0;
 568         int i;
 569
 570         printk_once(KERN_INFO "%s", mlx4_ib_version);
 571
 572         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 573                 num_ports++;
 574
 575         /* No point in registering a device with no ports... */
 576         if (num_ports == 0)
 577                 return NULL;
 578
 579         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 580         if (!ibdev) {
 581                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 582                 return NULL;
 583         }
 584
 585         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 586                 goto err_dealloc;
 587
 588         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 589                 goto err_pd;
 590
 591         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 592         if (!ibdev->uar_map)
 593                 goto err_uar;
 594         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 595
 596         ibdev->dev = dev;
 597
 598         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 599         ibdev->ib_dev.owner             = THIS_MODULE;
 600         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 601         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
 602         ibdev->num_ports                = num_ports;
 603         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
 604         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
 605         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 606
 607         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 608         ibdev->ib_dev.uverbs_cmd_mask   =
 609                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 610                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 611                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 612                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 613                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 614                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 615                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 616                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 617                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 618                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 619                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 620                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 621                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 622                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 623                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 624                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 625                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 626                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 627                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 628                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 629                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 630
 631         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 632         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 633         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 634         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 635         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 636         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 637         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 638         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 639         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 640         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 641         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 642         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 643         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 644         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 645         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 646         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 647         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 648         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 649         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 650         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 651         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 652         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 653         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 654         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 655         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 656         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 657         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
 658         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
 659         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 660         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 661         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 662         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 663         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 664         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 665         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
 666         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
 667         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
 668         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 669         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 670         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 671
 672         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 673         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 674         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 675         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 676
 677         if (init_node_data(ibdev))
 678                 goto err_map;
 679
 680         spin_lock_init(&ibdev->sm_lock);
 681         mutex_init(&ibdev->cap_mask_mutex);
 682
 683         if (ib_register_device(&ibdev->ib_dev, NULL))
 684                 goto err_map;
 685
 686         if (mlx4_ib_mad_init(ibdev))
 687                 goto err_reg;
 688
 689         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 690                 if (device_create_file(&ibdev->ib_dev.dev,
 691                                        mlx4_class_attributes[i]))
 692                         goto err_reg;
 693         }
 694
 695         ibdev->ib_active = true;
 696
 697         return ibdev;
 698
 699 err_reg:
 700         ib_unregister_device(&ibdev->ib_dev);
 701
 702 err_map:
 703         iounmap(ibdev->uar_map);
 704
 705 err_uar:
 706         mlx4_uar_free(dev, &ibdev->priv_uar);
 707
 708 err_pd:
 709         mlx4_pd_free(dev, ibdev->priv_pdn);
 710
 711 err_dealloc:
 712         ib_dealloc_device(&ibdev->ib_dev);
 713
 714         return NULL;
 715 }
 716
 717 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 718 {
 719         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 720         int p;
 721
 722         mlx4_ib_mad_cleanup(ibdev);
 723         ib_unregister_device(&ibdev->ib_dev);
 724
 725         for (p = 1; p <= ibdev->num_ports; ++p)
 726                 mlx4_CLOSE_PORT(dev, p);
 727
 728         iounmap(ibdev->uar_map);
 729         mlx4_uar_free(dev, &ibdev->priv_uar);
 730         mlx4_pd_free(dev, ibdev->priv_pdn);
 731         ib_dealloc_device(&ibdev->ib_dev);
 732 }
 733
 734 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 735                           enum mlx4_dev_event event, int port)
 736 {
 737         struct ib_event ibev;
 738         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
 739
 740         if (port > ibdev->num_ports)
 741                 return;
 742
 743         switch (event) {
 744         case MLX4_DEV_EVENT_PORT_UP:
 745                 ibev.event = IB_EVENT_PORT_ACTIVE;
 746                 break;
 747
 748         case MLX4_DEV_EVENT_PORT_DOWN:
 749                 ibev.event = IB_EVENT_PORT_ERR;
 750                 break;
 751
 752         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 753                 ibdev->ib_active = false;
 754                 ibev.event = IB_EVENT_DEVICE_FATAL;
 755                 break;
 756
 757         default:
 758                 return;
 759         }
 760
 761         ibev.device           = ibdev_ptr;
 762         ibev.element.port_num = port;
 763
 764         ib_dispatch_event(&ibev);
 765 }
 766
 767 static struct mlx4_interface mlx4_ib_interface = {
 768         .add    = mlx4_ib_add,
 769         .remove = mlx4_ib_remove,
 770         .event  = mlx4_ib_event
 771 };
 772
 773 static int __init mlx4_ib_init(void)
 774 {
 775         return mlx4_register_interface(&mlx4_ib_interface);
 776 }
 777
 778 static void __exit mlx4_ib_cleanup(void)
 779 {
 780         mlx4_unregister_interface(&mlx4_ib_interface);
 781 }
 782
 783 module_init(mlx4_ib_init);
 784 module_exit(mlx4_ib_cleanup);