drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/errno.h>
  36
  37 #include <rdma/ib_smi.h>
  38 #include <rdma/ib_user_verbs.h>
  39
  40 #include <linux/mlx4/driver.h>
  41 #include <linux/mlx4/cmd.h>
  42
  43 #include "mlx4_ib.h"
  44 #include "user.h"
  45
  46 #define DRV_NAME        "mlx4_ib"
  47 #define DRV_VERSION     "1.0"
  48 #define DRV_RELDATE     "April 4, 2008"
  49
  50 MODULE_AUTHOR("Roland Dreier");
  51 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  52 MODULE_LICENSE("Dual BSD/GPL");
  53 MODULE_VERSION(DRV_VERSION);
  54
  55 static const char mlx4_ib_version[] =
  56         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  57         DRV_VERSION " (" DRV_RELDATE ")\n";
  58
  59 static void init_query_mad(struct ib_smp *mad)
  60 {
  61         mad->base_version  = 1;
  62         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  63         mad->class_version = 1;
  64         mad->method        = IB_MGMT_METHOD_GET;
  65 }
  66
  67 static int mlx4_ib_query_device(struct ib_device *ibdev,
  68                                 struct ib_device_attr *props)
  69 {
  70         struct mlx4_ib_dev *dev = to_mdev(ibdev);
  71         struct ib_smp *in_mad  = NULL;
  72         struct ib_smp *out_mad = NULL;
  73         int err = -ENOMEM;
  74
  75         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  76         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  77         if (!in_mad || !out_mad)
  78                 goto out;
  79
  80         init_query_mad(in_mad);
  81         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  82
  83         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
  84         if (err)
  85                 goto out;
  86
  87         memset(props, 0, sizeof *props);
  88
  89         props->fw_ver = dev->dev->caps.fw_ver;
  90         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
  91                 IB_DEVICE_PORT_ACTIVE_EVENT             |
  92                 IB_DEVICE_SYS_IMAGE_GUID                |
  93                 IB_DEVICE_RC_RNR_NAK_GEN                |
  94                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
  95         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
  96                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
  97         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
  98                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
  99         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 100                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 101         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 102                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 103         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 104                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 105         if (dev->dev->caps.max_gso_sz)
 106                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 107
 108         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 109                 0xffffff;
 110         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 111         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 112         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 113
 114         props->max_mr_size         = ~0ull;
 115         props->page_size_cap       = dev->dev->caps.page_size_cap;
 116         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 117         props->max_qp_wr           = dev->dev->caps.max_wqes;
 118         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 119                                          dev->dev->caps.max_rq_sg);
 120         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 121         props->max_cqe             = dev->dev->caps.max_cqes;
 122         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 123         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 124         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 125         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 126         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 127         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 128         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 129         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 130         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 131         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 132                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 133         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 134         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 135         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 136         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 137                                            props->max_mcast_grp;
 138         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 139
 140 out:
 141         kfree(in_mad);
 142         kfree(out_mad);
 143
 144         return err;
 145 }
 146
 147 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 148                               struct ib_port_attr *props)
 149 {
 150         struct ib_smp *in_mad  = NULL;
 151         struct ib_smp *out_mad = NULL;
 152         int err = -ENOMEM;
 153
 154         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 155         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 156         if (!in_mad || !out_mad)
 157                 goto out;
 158
 159         memset(props, 0, sizeof *props);
 160
 161         init_query_mad(in_mad);
 162         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 163         in_mad->attr_mod = cpu_to_be32(port);
 164
 165         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 166         if (err)
 167                 goto out;
 168
 169         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 170         props->lmc              = out_mad->data[34] & 0x7;
 171         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 172         props->sm_sl            = out_mad->data[36] & 0xf;
 173         props->state            = out_mad->data[32] & 0xf;
 174         props->phys_state       = out_mad->data[33] >> 4;
 175         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 176         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 177         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 178         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 179         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 180         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 181         props->active_width     = out_mad->data[31] & 0xf;
 182         props->active_speed     = out_mad->data[35] >> 4;
 183         props->max_mtu          = out_mad->data[41] & 0xf;
 184         props->active_mtu       = out_mad->data[36] >> 4;
 185         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 186         props->max_vl_num       = out_mad->data[37] >> 4;
 187         props->init_type_reply  = out_mad->data[41] >> 4;
 188
 189 out:
 190         kfree(in_mad);
 191         kfree(out_mad);
 192
 193         return err;
 194 }
 195
 196 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 197                              union ib_gid *gid)
 198 {
 199         struct ib_smp *in_mad  = NULL;
 200         struct ib_smp *out_mad = NULL;
 201         int err = -ENOMEM;
 202
 203         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 204         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 205         if (!in_mad || !out_mad)
 206                 goto out;
 207
 208         init_query_mad(in_mad);
 209         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 210         in_mad->attr_mod = cpu_to_be32(port);
 211
 212         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 213         if (err)
 214                 goto out;
 215
 216         memcpy(gid->raw, out_mad->data + 8, 8);
 217
 218         init_query_mad(in_mad);
 219         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 220         in_mad->attr_mod = cpu_to_be32(index / 8);
 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 + 8, out_mad->data + (index % 8) * 8, 8);
 227
 228 out:
 229         kfree(in_mad);
 230         kfree(out_mad);
 231         return err;
 232 }
 233
 234 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 235                               u16 *pkey)
 236 {
 237         struct ib_smp *in_mad  = NULL;
 238         struct ib_smp *out_mad = NULL;
 239         int err = -ENOMEM;
 240
 241         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 242         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 243         if (!in_mad || !out_mad)
 244                 goto out;
 245
 246         init_query_mad(in_mad);
 247         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 248         in_mad->attr_mod = cpu_to_be32(index / 32);
 249
 250         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 251         if (err)
 252                 goto out;
 253
 254         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 255
 256 out:
 257         kfree(in_mad);
 258         kfree(out_mad);
 259         return err;
 260 }
 261
 262 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 263                                  struct ib_device_modify *props)
 264 {
 265         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 266                 return -EOPNOTSUPP;
 267
 268         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 269                 spin_lock(&to_mdev(ibdev)->sm_lock);
 270                 memcpy(ibdev->node_desc, props->node_desc, 64);
 271                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 272         }
 273
 274         return 0;
 275 }
 276
 277 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 278                          u32 cap_mask)
 279 {
 280         struct mlx4_cmd_mailbox *mailbox;
 281         int err;
 282
 283         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 284         if (IS_ERR(mailbox))
 285                 return PTR_ERR(mailbox);
 286
 287         memset(mailbox->buf, 0, 256);
 288
 289         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 290                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 291                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 292         } else {
 293                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 294                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 295         }
 296
 297         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 298                        MLX4_CMD_TIME_CLASS_B);
 299
 300         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 301         return err;
 302 }
 303
 304 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 305                                struct ib_port_modify *props)
 306 {
 307         struct ib_port_attr attr;
 308         u32 cap_mask;
 309         int err;
 310
 311         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 312
 313         err = mlx4_ib_query_port(ibdev, port, &attr);
 314         if (err)
 315                 goto out;
 316
 317         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 318                 ~props->clr_port_cap_mask;
 319
 320         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 321                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 322                             cap_mask);
 323
 324 out:
 325         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 326         return err;
 327 }
 328
 329 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 330                                                   struct ib_udata *udata)
 331 {
 332         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 333         struct mlx4_ib_ucontext *context;
 334         struct mlx4_ib_alloc_ucontext_resp resp;
 335         int err;
 336
 337         resp.qp_tab_size      = dev->dev->caps.num_qps;
 338         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 339         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 340
 341         context = kmalloc(sizeof *context, GFP_KERNEL);
 342         if (!context)
 343                 return ERR_PTR(-ENOMEM);
 344
 345         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 346         if (err) {
 347                 kfree(context);
 348                 return ERR_PTR(err);
 349         }
 350
 351         INIT_LIST_HEAD(&context->db_page_list);
 352         mutex_init(&context->db_page_mutex);
 353
 354         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 355         if (err) {
 356                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 357                 kfree(context);
 358                 return ERR_PTR(-EFAULT);
 359         }
 360
 361         return &context->ibucontext;
 362 }
 363
 364 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 365 {
 366         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 367
 368         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 369         kfree(context);
 370
 371         return 0;
 372 }
 373
 374 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 375 {
 376         struct mlx4_ib_dev *dev = to_mdev(context->device);
 377
 378         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 379                 return -EINVAL;
 380
 381         if (vma->vm_pgoff == 0) {
 382                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 383
 384                 if (io_remap_pfn_range(vma, vma->vm_start,
 385                                        to_mucontext(context)->uar.pfn,
 386                                        PAGE_SIZE, vma->vm_page_prot))
 387                         return -EAGAIN;
 388         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 389                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
 390                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 391
 392                 if (io_remap_pfn_range(vma, vma->vm_start,
 393                                        to_mucontext(context)->uar.pfn +
 394                                        dev->dev->caps.num_uars,
 395                                        PAGE_SIZE, vma->vm_page_prot))
 396                         return -EAGAIN;
 397         } else
 398                 return -EINVAL;
 399
 400         return 0;
 401 }
 402
 403 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 404                                       struct ib_ucontext *context,
 405                                       struct ib_udata *udata)
 406 {
 407         struct mlx4_ib_pd *pd;
 408         int err;
 409
 410         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 411         if (!pd)
 412                 return ERR_PTR(-ENOMEM);
 413
 414         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 415         if (err) {
 416                 kfree(pd);
 417                 return ERR_PTR(err);
 418         }
 419
 420         if (context)
 421                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 422                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 423                         kfree(pd);
 424                         return ERR_PTR(-EFAULT);
 425                 }
 426
 427         return &pd->ibpd;
 428 }
 429
 430 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 431 {
 432         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 433         kfree(pd);
 434
 435         return 0;
 436 }
 437
 438 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 439 {
 440         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 441                                      &to_mqp(ibqp)->mqp, gid->raw,
 442                                      !!(to_mqp(ibqp)->flags &
 443                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
 444 }
 445
 446 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 447 {
 448         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 449                                      &to_mqp(ibqp)->mqp, gid->raw);
 450 }
 451
 452 static int init_node_data(struct mlx4_ib_dev *dev)
 453 {
 454         struct ib_smp *in_mad  = NULL;
 455         struct ib_smp *out_mad = NULL;
 456         int err = -ENOMEM;
 457
 458         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 459         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 460         if (!in_mad || !out_mad)
 461                 goto out;
 462
 463         init_query_mad(in_mad);
 464         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 465
 466         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 467         if (err)
 468                 goto out;
 469
 470         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 471
 472         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 473
 474         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 475         if (err)
 476                 goto out;
 477
 478         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 479         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 480
 481 out:
 482         kfree(in_mad);
 483         kfree(out_mad);
 484         return err;
 485 }
 486
 487 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 488                         char *buf)
 489 {
 490         struct mlx4_ib_dev *dev =
 491                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 492         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 493 }
 494
 495 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 496                            char *buf)
 497 {
 498         struct mlx4_ib_dev *dev =
 499                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 500         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 501                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 502                        (int) dev->dev->caps.fw_ver & 0xffff);
 503 }
 504
 505 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 506                         char *buf)
 507 {
 508         struct mlx4_ib_dev *dev =
 509                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 510         return sprintf(buf, "%x\n", dev->dev->rev_id);
 511 }
 512
 513 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 514                           char *buf)
 515 {
 516         struct mlx4_ib_dev *dev =
 517                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 518         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 519                        dev->dev->board_id);
 520 }
 521
 522 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 523 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 524 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 525 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 526
 527 static struct device_attribute *mlx4_class_attributes[] = {
 528         &dev_attr_hw_rev,
 529         &dev_attr_fw_ver,
 530         &dev_attr_hca_type,
 531         &dev_attr_board_id
 532 };
 533
 534 static void *mlx4_ib_add(struct mlx4_dev *dev)
 535 {
 536         static int mlx4_ib_version_printed;
 537         struct mlx4_ib_dev *ibdev;
 538         int i;
 539
 540
 541         if (!mlx4_ib_version_printed) {
 542                 printk(KERN_INFO "%s", mlx4_ib_version);
 543                 ++mlx4_ib_version_printed;
 544         }
 545
 546         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 547         if (!ibdev) {
 548                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 549                 return NULL;
 550         }
 551
 552         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 553                 goto err_dealloc;
 554
 555         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 556                 goto err_pd;
 557
 558         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 559         if (!ibdev->uar_map)
 560                 goto err_uar;
 561         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 562
 563         ibdev->dev = dev;
 564
 565         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 566         ibdev->ib_dev.owner             = THIS_MODULE;
 567         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 568         ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
 569         ibdev->ib_dev.num_comp_vectors  = 1;
 570         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 571
 572         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 573         ibdev->ib_dev.uverbs_cmd_mask   =
 574                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 575                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 576                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 577                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 578                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 579                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 580                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 581                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 582                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 583                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 584                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 585                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 586                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 587                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 588                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 589                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 590                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 591                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 592                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 593                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 594                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 595
 596         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 597         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 598         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 599         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 600         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 601         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 602         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 603         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 604         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 605         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 606         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 607         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 608         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 609         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 610         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 611         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 612         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 613         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 614         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 615         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 616         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 617         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 618         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 619         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 620         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 621         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 622         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
 623         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
 624         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 625         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 626         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 627         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 628         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 629         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 630         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 631         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 632         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 633
 634         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 635         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 636         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 637         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 638
 639         if (init_node_data(ibdev))
 640                 goto err_map;
 641
 642         spin_lock_init(&ibdev->sm_lock);
 643         mutex_init(&ibdev->cap_mask_mutex);
 644
 645         if (ib_register_device(&ibdev->ib_dev))
 646                 goto err_map;
 647
 648         if (mlx4_ib_mad_init(ibdev))
 649                 goto err_reg;
 650
 651         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 652                 if (device_create_file(&ibdev->ib_dev.dev,
 653                                        mlx4_class_attributes[i]))
 654                         goto err_reg;
 655         }
 656
 657         return ibdev;
 658
 659 err_reg:
 660         ib_unregister_device(&ibdev->ib_dev);
 661
 662 err_map:
 663         iounmap(ibdev->uar_map);
 664
 665 err_uar:
 666         mlx4_uar_free(dev, &ibdev->priv_uar);
 667
 668 err_pd:
 669         mlx4_pd_free(dev, ibdev->priv_pdn);
 670
 671 err_dealloc:
 672         ib_dealloc_device(&ibdev->ib_dev);
 673
 674         return NULL;
 675 }
 676
 677 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 678 {
 679         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 680         int p;
 681
 682         for (p = 1; p <= dev->caps.num_ports; ++p)
 683                 mlx4_CLOSE_PORT(dev, p);
 684
 685         mlx4_ib_mad_cleanup(ibdev);
 686         ib_unregister_device(&ibdev->ib_dev);
 687         iounmap(ibdev->uar_map);
 688         mlx4_uar_free(dev, &ibdev->priv_uar);
 689         mlx4_pd_free(dev, ibdev->priv_pdn);
 690         ib_dealloc_device(&ibdev->ib_dev);
 691 }
 692
 693 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 694                           enum mlx4_dev_event event, int port)
 695 {
 696         struct ib_event ibev;
 697
 698         switch (event) {
 699         case MLX4_DEV_EVENT_PORT_UP:
 700                 ibev.event = IB_EVENT_PORT_ACTIVE;
 701                 break;
 702
 703         case MLX4_DEV_EVENT_PORT_DOWN:
 704                 ibev.event = IB_EVENT_PORT_ERR;
 705                 break;
 706
 707         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 708                 ibev.event = IB_EVENT_DEVICE_FATAL;
 709                 break;
 710
 711         default:
 712                 return;
 713         }
 714
 715         ibev.device           = ibdev_ptr;
 716         ibev.element.port_num = port;
 717
 718         ib_dispatch_event(&ibev);
 719 }
 720
 721 static struct mlx4_interface mlx4_ib_interface = {
 722         .add    = mlx4_ib_add,
 723         .remove = mlx4_ib_remove,
 724         .event  = mlx4_ib_event
 725 };
 726
 727 static int __init mlx4_ib_init(void)
 728 {
 729         return mlx4_register_interface(&mlx4_ib_interface);
 730 }
 731
 732 static void __exit mlx4_ib_cleanup(void)
 733 {
 734         mlx4_unregister_interface(&mlx4_ib_interface);
 735 }
 736
 737 module_init(mlx4_ib_init);
 738 module_exit(mlx4_ib_cleanup);