drivers/infiniband/hw/mlx4/main.c

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