git.oblomov.eu Git - linux-2.6/blob - 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[] __devinitdata =
  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
 103         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 104                 0xffffff;
 105         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 106         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 107         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 108
 109         props->max_mr_size         = ~0ull;
 110         props->page_size_cap       = dev->dev->caps.page_size_cap;
 111         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 112         props->max_qp_wr           = dev->dev->caps.max_wqes;
 113         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 114                                          dev->dev->caps.max_rq_sg);
 115         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 116         props->max_cqe             = dev->dev->caps.max_cqes;
 117         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 118         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 119         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 120         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 121         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 122         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 123         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 124         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 125         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 126         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 127                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 128         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 129         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 130         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 131         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 132                                            props->max_mcast_grp;
 133         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 134
 135 out:
 136         kfree(in_mad);
 137         kfree(out_mad);
 138
 139         return err;
 140 }
 141
 142 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 143                               struct ib_port_attr *props)
 144 {
 145         struct ib_smp *in_mad  = NULL;
 146         struct ib_smp *out_mad = NULL;
 147         int err = -ENOMEM;
 148
 149         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 150         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 151         if (!in_mad || !out_mad)
 152                 goto out;
 153
 154         memset(props, 0, sizeof *props);
 155
 156         init_query_mad(in_mad);
 157         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 158         in_mad->attr_mod = cpu_to_be32(port);
 159
 160         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 161         if (err)
 162                 goto out;
 163
 164         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 165         props->lmc              = out_mad->data[34] & 0x7;
 166         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 167         props->sm_sl            = out_mad->data[36] & 0xf;
 168         props->state            = out_mad->data[32] & 0xf;
 169         props->phys_state       = out_mad->data[33] >> 4;
 170         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 171         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 172         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 173         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 174         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 175         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 176         props->active_width     = out_mad->data[31] & 0xf;
 177         props->active_speed     = out_mad->data[35] >> 4;
 178         props->max_mtu          = out_mad->data[41] & 0xf;
 179         props->active_mtu       = out_mad->data[36] >> 4;
 180         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 181         props->max_vl_num       = out_mad->data[37] >> 4;
 182         props->init_type_reply  = out_mad->data[41] >> 4;
 183
 184 out:
 185         kfree(in_mad);
 186         kfree(out_mad);
 187
 188         return err;
 189 }
 190
 191 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 192                              union ib_gid *gid)
 193 {
 194         struct ib_smp *in_mad  = NULL;
 195         struct ib_smp *out_mad = NULL;
 196         int err = -ENOMEM;
 197
 198         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 199         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 200         if (!in_mad || !out_mad)
 201                 goto out;
 202
 203         init_query_mad(in_mad);
 204         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 205         in_mad->attr_mod = cpu_to_be32(port);
 206
 207         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 208         if (err)
 209                 goto out;
 210
 211         memcpy(gid->raw, out_mad->data + 8, 8);
 212
 213         init_query_mad(in_mad);
 214         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 215         in_mad->attr_mod = cpu_to_be32(index / 8);
 216
 217         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 218         if (err)
 219                 goto out;
 220
 221         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 222
 223 out:
 224         kfree(in_mad);
 225         kfree(out_mad);
 226         return err;
 227 }
 228
 229 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 230                               u16 *pkey)
 231 {
 232         struct ib_smp *in_mad  = NULL;
 233         struct ib_smp *out_mad = NULL;
 234         int err = -ENOMEM;
 235
 236         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 237         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 238         if (!in_mad || !out_mad)
 239                 goto out;
 240
 241         init_query_mad(in_mad);
 242         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 243         in_mad->attr_mod = cpu_to_be32(index / 32);
 244
 245         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 246         if (err)
 247                 goto out;
 248
 249         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 250
 251 out:
 252         kfree(in_mad);
 253         kfree(out_mad);
 254         return err;
 255 }
 256
 257 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 258                                  struct ib_device_modify *props)
 259 {
 260         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 261                 return -EOPNOTSUPP;
 262
 263         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 264                 spin_lock(&to_mdev(ibdev)->sm_lock);
 265                 memcpy(ibdev->node_desc, props->node_desc, 64);
 266                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 267         }
 268
 269         return 0;
 270 }
 271
 272 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 273                          u32 cap_mask)
 274 {
 275         struct mlx4_cmd_mailbox *mailbox;
 276         int err;
 277
 278         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 279         if (IS_ERR(mailbox))
 280                 return PTR_ERR(mailbox);
 281
 282         memset(mailbox->buf, 0, 256);
 283
 284         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 285                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 286                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 287         } else {
 288                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 289                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 290         }
 291
 292         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 293                        MLX4_CMD_TIME_CLASS_B);
 294
 295         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 296         return err;
 297 }
 298
 299 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 300                                struct ib_port_modify *props)
 301 {
 302         struct ib_port_attr attr;
 303         u32 cap_mask;
 304         int err;
 305
 306         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 307
 308         err = mlx4_ib_query_port(ibdev, port, &attr);
 309         if (err)
 310                 goto out;
 311
 312         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 313                 ~props->clr_port_cap_mask;
 314
 315         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 316                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 317                             cap_mask);
 318
 319 out:
 320         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 321         return err;
 322 }
 323
 324 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 325                                                   struct ib_udata *udata)
 326 {
 327         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 328         struct mlx4_ib_ucontext *context;
 329         struct mlx4_ib_alloc_ucontext_resp resp;
 330         int err;
 331
 332         resp.qp_tab_size      = dev->dev->caps.num_qps;
 333         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 334         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 335
 336         context = kmalloc(sizeof *context, GFP_KERNEL);
 337         if (!context)
 338                 return ERR_PTR(-ENOMEM);
 339
 340         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 341         if (err) {
 342                 kfree(context);
 343                 return ERR_PTR(err);
 344         }
 345
 346         INIT_LIST_HEAD(&context->db_page_list);
 347         mutex_init(&context->db_page_mutex);
 348
 349         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 350         if (err) {
 351                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 352                 kfree(context);
 353                 return ERR_PTR(-EFAULT);
 354         }
 355
 356         return &context->ibucontext;
 357 }
 358
 359 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 360 {
 361         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 362
 363         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 364         kfree(context);
 365
 366         return 0;
 367 }
 368
 369 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 370 {
 371         struct mlx4_ib_dev *dev = to_mdev(context->device);
 372
 373         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 374                 return -EINVAL;
 375
 376         if (vma->vm_pgoff == 0) {
 377                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 378
 379                 if (io_remap_pfn_range(vma, vma->vm_start,
 380                                        to_mucontext(context)->uar.pfn,
 381                                        PAGE_SIZE, vma->vm_page_prot))
 382                         return -EAGAIN;
 383         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 384                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
 385                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 386
 387                 if (io_remap_pfn_range(vma, vma->vm_start,
 388                                        to_mucontext(context)->uar.pfn +
 389                                        dev->dev->caps.num_uars,
 390                                        PAGE_SIZE, vma->vm_page_prot))
 391                         return -EAGAIN;
 392         } else
 393                 return -EINVAL;
 394
 395         return 0;
 396 }
 397
 398 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 399                                       struct ib_ucontext *context,
 400                                       struct ib_udata *udata)
 401 {
 402         struct mlx4_ib_pd *pd;
 403         int err;
 404
 405         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 406         if (!pd)
 407                 return ERR_PTR(-ENOMEM);
 408
 409         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 410         if (err) {
 411                 kfree(pd);
 412                 return ERR_PTR(err);
 413         }
 414
 415         if (context)
 416                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 417                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 418                         kfree(pd);
 419                         return ERR_PTR(-EFAULT);
 420                 }
 421
 422         return &pd->ibpd;
 423 }
 424
 425 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 426 {
 427         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 428         kfree(pd);
 429
 430         return 0;
 431 }
 432
 433 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 434 {
 435         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 436                                      &to_mqp(ibqp)->mqp, gid->raw);
 437 }
 438
 439 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 440 {
 441         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 442                                      &to_mqp(ibqp)->mqp, gid->raw);
 443 }
 444
 445 static int init_node_data(struct mlx4_ib_dev *dev)
 446 {
 447         struct ib_smp *in_mad  = NULL;
 448         struct ib_smp *out_mad = NULL;
 449         int err = -ENOMEM;
 450
 451         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 452         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 453         if (!in_mad || !out_mad)
 454                 goto out;
 455
 456         init_query_mad(in_mad);
 457         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 458
 459         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 460         if (err)
 461                 goto out;
 462
 463         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 464
 465         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 466
 467         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 468         if (err)
 469                 goto out;
 470
 471         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 472
 473 out:
 474         kfree(in_mad);
 475         kfree(out_mad);
 476         return err;
 477 }
 478
 479 static ssize_t show_hca(struct class_device *cdev, char *buf)
 480 {
 481         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 482         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 483 }
 484
 485 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
 486 {
 487         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 488         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 489                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 490                        (int) dev->dev->caps.fw_ver & 0xffff);
 491 }
 492
 493 static ssize_t show_rev(struct class_device *cdev, char *buf)
 494 {
 495         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 496         return sprintf(buf, "%x\n", dev->dev->rev_id);
 497 }
 498
 499 static ssize_t show_board(struct class_device *cdev, char *buf)
 500 {
 501         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
 502         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
 503 }
 504
 505 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 506 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 507 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 508 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 509
 510 static struct class_device_attribute *mlx4_class_attributes[] = {
 511         &class_device_attr_hw_rev,
 512         &class_device_attr_fw_ver,
 513         &class_device_attr_hca_type,
 514         &class_device_attr_board_id
 515 };
 516
 517 static void *mlx4_ib_add(struct mlx4_dev *dev)
 518 {
 519         struct mlx4_ib_dev *ibdev;
 520         int i;
 521
 522         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 523         if (!ibdev) {
 524                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 525                 return NULL;
 526         }
 527
 528         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 529                 goto err_dealloc;
 530
 531         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 532                 goto err_pd;
 533
 534         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 535         if (!ibdev->uar_map)
 536                 goto err_uar;
 537         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 538
 539         INIT_LIST_HEAD(&ibdev->pgdir_list);
 540         mutex_init(&ibdev->pgdir_mutex);
 541
 542         ibdev->dev = dev;
 543
 544         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 545         ibdev->ib_dev.owner             = THIS_MODULE;
 546         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 547         ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
 548         ibdev->ib_dev.num_comp_vectors  = 1;
 549         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 550
 551         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 552         ibdev->ib_dev.uverbs_cmd_mask   =
 553                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 554                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 555                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 556                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 557                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 558                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 559                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 560                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 561                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 562                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 563                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 564                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 565                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 566                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 567                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 568                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 569                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 570                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 571                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 572                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 573
 574         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 575         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 576         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 577         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 578         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 579         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 580         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 581         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 582         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 583         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 584         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 585         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 586         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 587         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 588         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 589         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 590         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 591         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 592         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 593         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 594         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 595         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 596         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 597         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 598         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 599         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 600         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 601         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 602         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 603         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 604         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 605         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 606         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 607         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 608         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 609
 610         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 611         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 612         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 613         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 614
 615         if (init_node_data(ibdev))
 616                 goto err_map;
 617
 618         spin_lock_init(&ibdev->sm_lock);
 619         mutex_init(&ibdev->cap_mask_mutex);
 620
 621         if (ib_register_device(&ibdev->ib_dev))
 622                 goto err_map;
 623
 624         if (mlx4_ib_mad_init(ibdev))
 625                 goto err_reg;
 626
 627         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 628                 if (class_device_create_file(&ibdev->ib_dev.class_dev,
 629                                                mlx4_class_attributes[i]))
 630                         goto err_reg;
 631         }
 632
 633         return ibdev;
 634
 635 err_reg:
 636         ib_unregister_device(&ibdev->ib_dev);
 637
 638 err_map:
 639         iounmap(ibdev->uar_map);
 640
 641 err_uar:
 642         mlx4_uar_free(dev, &ibdev->priv_uar);
 643
 644 err_pd:
 645         mlx4_pd_free(dev, ibdev->priv_pdn);
 646
 647 err_dealloc:
 648         ib_dealloc_device(&ibdev->ib_dev);
 649
 650         return NULL;
 651 }
 652
 653 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 654 {
 655         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 656         int p;
 657
 658         for (p = 1; p <= dev->caps.num_ports; ++p)
 659                 mlx4_CLOSE_PORT(dev, p);
 660
 661         mlx4_ib_mad_cleanup(ibdev);
 662         ib_unregister_device(&ibdev->ib_dev);
 663         iounmap(ibdev->uar_map);
 664         mlx4_uar_free(dev, &ibdev->priv_uar);
 665         mlx4_pd_free(dev, ibdev->priv_pdn);
 666         ib_dealloc_device(&ibdev->ib_dev);
 667 }
 668
 669 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 670                           enum mlx4_dev_event event, int subtype,
 671                           int port)
 672 {
 673         struct ib_event ibev;
 674
 675         switch (event) {
 676         case MLX4_EVENT_TYPE_PORT_CHANGE:
 677                 ibev.event = subtype == MLX4_PORT_CHANGE_SUBTYPE_ACTIVE ?
 678                         IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
 679                 break;
 680
 681         case MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR:
 682                 ibev.event = IB_EVENT_DEVICE_FATAL;
 683                 break;
 684
 685         default:
 686                 return;
 687         }
 688
 689         ibev.device           = ibdev_ptr;
 690         ibev.element.port_num = port;
 691
 692         ib_dispatch_event(&ibev);
 693 }
 694
 695 static struct mlx4_interface mlx4_ib_interface = {
 696         .add    = mlx4_ib_add,
 697         .remove = mlx4_ib_remove,
 698         .event  = mlx4_ib_event
 699 };
 700
 701 static int __init mlx4_ib_init(void)
 702 {
 703         return mlx4_register_interface(&mlx4_ib_interface);
 704 }
 705
 706 static void __exit mlx4_ib_cleanup(void)
 707 {
 708         mlx4_unregister_interface(&mlx4_ib_interface);
 709 }
 710
 711 module_init(mlx4_ib_init);
 712 module_exit(mlx4_ib_cleanup);