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/errno.h>
  37
  38 #include <rdma/ib_smi.h>
  39 #include <rdma/ib_user_verbs.h>
  40
  41 #include <linux/mlx4/driver.h>
  42 #include <linux/mlx4/cmd.h>
  43
  44 #include "mlx4_ib.h"
  45 #include "user.h"
  46
  47 #define DRV_NAME        "mlx4_ib"
  48 #define DRV_VERSION     "1.0"
  49 #define DRV_RELDATE     "April 4, 2008"
  50
  51 MODULE_AUTHOR("Roland Dreier");
  52 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_VERSION(DRV_VERSION);
  55
  56 static const char mlx4_ib_version[] =
  57         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  58         DRV_VERSION " (" DRV_RELDATE ")\n";
  59
  60 static void init_query_mad(struct ib_smp *mad)
  61 {
  62         mad->base_version  = 1;
  63         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  64         mad->class_version = 1;
  65         mad->method        = IB_MGMT_METHOD_GET;
  66 }
  67
  68 static int mlx4_ib_query_device(struct ib_device *ibdev,
  69                                 struct ib_device_attr *props)
  70 {
  71         struct mlx4_ib_dev *dev = to_mdev(ibdev);
  72         struct ib_smp *in_mad  = NULL;
  73         struct ib_smp *out_mad = NULL;
  74         int err = -ENOMEM;
  75
  76         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
  77         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
  78         if (!in_mad || !out_mad)
  79                 goto out;
  80
  81         init_query_mad(in_mad);
  82         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
  83
  84         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
  85         if (err)
  86                 goto out;
  87
  88         memset(props, 0, sizeof *props);
  89
  90         props->fw_ver = dev->dev->caps.fw_ver;
  91         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
  92                 IB_DEVICE_PORT_ACTIVE_EVENT             |
  93                 IB_DEVICE_SYS_IMAGE_GUID                |
  94                 IB_DEVICE_RC_RNR_NAK_GEN                |
  95                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
  96         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
  97                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
  98         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
  99                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 100         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 101                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 102         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 103                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 104         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 105                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 106         if (dev->dev->caps.max_gso_sz)
 107                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 108         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 109                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 110         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 111             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 112             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 113                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 114
 115         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 116                 0xffffff;
 117         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
 118         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 119         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 120
 121         props->max_mr_size         = ~0ull;
 122         props->page_size_cap       = dev->dev->caps.page_size_cap;
 123         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
 124         props->max_qp_wr           = dev->dev->caps.max_wqes;
 125         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 126                                          dev->dev->caps.max_rq_sg);
 127         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
 128         props->max_cqe             = dev->dev->caps.max_cqes;
 129         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
 130         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 131         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 132         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 133         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 134         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
 135         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 136         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 137         props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
 138         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 139         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 140                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 141         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 142         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 143         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 144         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 145                                            props->max_mcast_grp;
 146         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
 147
 148 out:
 149         kfree(in_mad);
 150         kfree(out_mad);
 151
 152         return err;
 153 }
 154
 155 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 156                               struct ib_port_attr *props)
 157 {
 158         struct ib_smp *in_mad  = NULL;
 159         struct ib_smp *out_mad = NULL;
 160         int err = -ENOMEM;
 161
 162         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 163         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 164         if (!in_mad || !out_mad)
 165                 goto out;
 166
 167         memset(props, 0, sizeof *props);
 168
 169         init_query_mad(in_mad);
 170         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 171         in_mad->attr_mod = cpu_to_be32(port);
 172
 173         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 174         if (err)
 175                 goto out;
 176
 177         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 178         props->lmc              = out_mad->data[34] & 0x7;
 179         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 180         props->sm_sl            = out_mad->data[36] & 0xf;
 181         props->state            = out_mad->data[32] & 0xf;
 182         props->phys_state       = out_mad->data[33] >> 4;
 183         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 184         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 185         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 186         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 187         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 188         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 189         props->active_width     = out_mad->data[31] & 0xf;
 190         props->active_speed     = out_mad->data[35] >> 4;
 191         props->max_mtu          = out_mad->data[41] & 0xf;
 192         props->active_mtu       = out_mad->data[36] >> 4;
 193         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 194         props->max_vl_num       = out_mad->data[37] >> 4;
 195         props->init_type_reply  = out_mad->data[41] >> 4;
 196
 197 out:
 198         kfree(in_mad);
 199         kfree(out_mad);
 200
 201         return err;
 202 }
 203
 204 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 205                              union ib_gid *gid)
 206 {
 207         struct ib_smp *in_mad  = NULL;
 208         struct ib_smp *out_mad = NULL;
 209         int err = -ENOMEM;
 210
 211         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 212         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 213         if (!in_mad || !out_mad)
 214                 goto out;
 215
 216         init_query_mad(in_mad);
 217         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 218         in_mad->attr_mod = cpu_to_be32(port);
 219
 220         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 221         if (err)
 222                 goto out;
 223
 224         memcpy(gid->raw, out_mad->data + 8, 8);
 225
 226         init_query_mad(in_mad);
 227         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 228         in_mad->attr_mod = cpu_to_be32(index / 8);
 229
 230         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 231         if (err)
 232                 goto out;
 233
 234         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 235
 236 out:
 237         kfree(in_mad);
 238         kfree(out_mad);
 239         return err;
 240 }
 241
 242 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 243                               u16 *pkey)
 244 {
 245         struct ib_smp *in_mad  = NULL;
 246         struct ib_smp *out_mad = NULL;
 247         int err = -ENOMEM;
 248
 249         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 250         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 251         if (!in_mad || !out_mad)
 252                 goto out;
 253
 254         init_query_mad(in_mad);
 255         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 256         in_mad->attr_mod = cpu_to_be32(index / 32);
 257
 258         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
 259         if (err)
 260                 goto out;
 261
 262         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 263
 264 out:
 265         kfree(in_mad);
 266         kfree(out_mad);
 267         return err;
 268 }
 269
 270 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 271                                  struct ib_device_modify *props)
 272 {
 273         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 274                 return -EOPNOTSUPP;
 275
 276         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
 277                 spin_lock(&to_mdev(ibdev)->sm_lock);
 278                 memcpy(ibdev->node_desc, props->node_desc, 64);
 279                 spin_unlock(&to_mdev(ibdev)->sm_lock);
 280         }
 281
 282         return 0;
 283 }
 284
 285 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 286                          u32 cap_mask)
 287 {
 288         struct mlx4_cmd_mailbox *mailbox;
 289         int err;
 290
 291         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 292         if (IS_ERR(mailbox))
 293                 return PTR_ERR(mailbox);
 294
 295         memset(mailbox->buf, 0, 256);
 296
 297         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 298                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 299                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 300         } else {
 301                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 302                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 303         }
 304
 305         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 306                        MLX4_CMD_TIME_CLASS_B);
 307
 308         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 309         return err;
 310 }
 311
 312 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 313                                struct ib_port_modify *props)
 314 {
 315         struct ib_port_attr attr;
 316         u32 cap_mask;
 317         int err;
 318
 319         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 320
 321         err = mlx4_ib_query_port(ibdev, port, &attr);
 322         if (err)
 323                 goto out;
 324
 325         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 326                 ~props->clr_port_cap_mask;
 327
 328         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 329                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 330                             cap_mask);
 331
 332 out:
 333         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 334         return err;
 335 }
 336
 337 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 338                                                   struct ib_udata *udata)
 339 {
 340         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 341         struct mlx4_ib_ucontext *context;
 342         struct mlx4_ib_alloc_ucontext_resp resp;
 343         int err;
 344
 345         resp.qp_tab_size      = dev->dev->caps.num_qps;
 346         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 347         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 348
 349         context = kmalloc(sizeof *context, GFP_KERNEL);
 350         if (!context)
 351                 return ERR_PTR(-ENOMEM);
 352
 353         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 354         if (err) {
 355                 kfree(context);
 356                 return ERR_PTR(err);
 357         }
 358
 359         INIT_LIST_HEAD(&context->db_page_list);
 360         mutex_init(&context->db_page_mutex);
 361
 362         err = ib_copy_to_udata(udata, &resp, sizeof resp);
 363         if (err) {
 364                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 365                 kfree(context);
 366                 return ERR_PTR(-EFAULT);
 367         }
 368
 369         return &context->ibucontext;
 370 }
 371
 372 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 373 {
 374         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 375
 376         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 377         kfree(context);
 378
 379         return 0;
 380 }
 381
 382 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 383 {
 384         struct mlx4_ib_dev *dev = to_mdev(context->device);
 385
 386         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 387                 return -EINVAL;
 388
 389         if (vma->vm_pgoff == 0) {
 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                                        PAGE_SIZE, vma->vm_page_prot))
 395                         return -EAGAIN;
 396         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 397                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 398
 399                 if (io_remap_pfn_range(vma, vma->vm_start,
 400                                        to_mucontext(context)->uar.pfn +
 401                                        dev->dev->caps.num_uars,
 402                                        PAGE_SIZE, vma->vm_page_prot))
 403                         return -EAGAIN;
 404         } else
 405                 return -EINVAL;
 406
 407         return 0;
 408 }
 409
 410 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 411                                       struct ib_ucontext *context,
 412                                       struct ib_udata *udata)
 413 {
 414         struct mlx4_ib_pd *pd;
 415         int err;
 416
 417         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 418         if (!pd)
 419                 return ERR_PTR(-ENOMEM);
 420
 421         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 422         if (err) {
 423                 kfree(pd);
 424                 return ERR_PTR(err);
 425         }
 426
 427         if (context)
 428                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 429                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 430                         kfree(pd);
 431                         return ERR_PTR(-EFAULT);
 432                 }
 433
 434         return &pd->ibpd;
 435 }
 436
 437 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 438 {
 439         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 440         kfree(pd);
 441
 442         return 0;
 443 }
 444
 445 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 446 {
 447         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
 448                                      &to_mqp(ibqp)->mqp, gid->raw,
 449                                      !!(to_mqp(ibqp)->flags &
 450                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
 451 }
 452
 453 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 454 {
 455         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
 456                                      &to_mqp(ibqp)->mqp, gid->raw);
 457 }
 458
 459 static int init_node_data(struct mlx4_ib_dev *dev)
 460 {
 461         struct ib_smp *in_mad  = NULL;
 462         struct ib_smp *out_mad = NULL;
 463         int err = -ENOMEM;
 464
 465         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 466         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 467         if (!in_mad || !out_mad)
 468                 goto out;
 469
 470         init_query_mad(in_mad);
 471         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
 472
 473         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 474         if (err)
 475                 goto out;
 476
 477         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
 478
 479         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 480
 481         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
 482         if (err)
 483                 goto out;
 484
 485         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
 486         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
 487
 488 out:
 489         kfree(in_mad);
 490         kfree(out_mad);
 491         return err;
 492 }
 493
 494 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 495                         char *buf)
 496 {
 497         struct mlx4_ib_dev *dev =
 498                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 499         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
 500 }
 501
 502 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
 503                            char *buf)
 504 {
 505         struct mlx4_ib_dev *dev =
 506                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 507         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
 508                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
 509                        (int) dev->dev->caps.fw_ver & 0xffff);
 510 }
 511
 512 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 513                         char *buf)
 514 {
 515         struct mlx4_ib_dev *dev =
 516                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 517         return sprintf(buf, "%x\n", dev->dev->rev_id);
 518 }
 519
 520 static ssize_t show_board(struct device *device, struct device_attribute *attr,
 521                           char *buf)
 522 {
 523         struct mlx4_ib_dev *dev =
 524                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
 525         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
 526                        dev->dev->board_id);
 527 }
 528
 529 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 530 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 531 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
 532 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 533
 534 static struct device_attribute *mlx4_class_attributes[] = {
 535         &dev_attr_hw_rev,
 536         &dev_attr_fw_ver,
 537         &dev_attr_hca_type,
 538         &dev_attr_board_id
 539 };
 540
 541 static void *mlx4_ib_add(struct mlx4_dev *dev)
 542 {
 543         static int mlx4_ib_version_printed;
 544         struct mlx4_ib_dev *ibdev;
 545         int num_ports = 0;
 546         int i;
 547
 548         if (!mlx4_ib_version_printed) {
 549                 printk(KERN_INFO "%s", mlx4_ib_version);
 550                 ++mlx4_ib_version_printed;
 551         }
 552
 553         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 554                 num_ports++;
 555
 556         /* No point in registering a device with no ports... */
 557         if (num_ports == 0)
 558                 return NULL;
 559
 560         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
 561         if (!ibdev) {
 562                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
 563                 return NULL;
 564         }
 565
 566         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
 567                 goto err_dealloc;
 568
 569         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
 570                 goto err_pd;
 571
 572         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
 573         if (!ibdev->uar_map)
 574                 goto err_uar;
 575         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
 576
 577         ibdev->dev = dev;
 578
 579         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
 580         ibdev->ib_dev.owner             = THIS_MODULE;
 581         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
 582         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
 583         ibdev->num_ports                = num_ports;
 584         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
 585         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
 586         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
 587
 588         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
 589         ibdev->ib_dev.uverbs_cmd_mask   =
 590                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
 591                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
 592                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
 593                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
 594                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
 595                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
 596                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
 597                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 598                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
 599                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
 600                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
 601                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
 602                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
 603                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
 604                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
 605                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
 606                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
 607                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
 608                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
 609                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
 610                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 611
 612         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
 613         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
 614         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
 615         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
 616         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
 617         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
 618         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
 619         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
 620         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
 621         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
 622         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
 623         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
 624         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
 625         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
 626         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
 627         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
 628         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
 629         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
 630         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
 631         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
 632         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
 633         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
 634         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
 635         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
 636         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
 637         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
 638         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
 639         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
 640         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
 641         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
 642         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
 643         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
 644         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
 645         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
 646         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
 647         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
 648         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
 649         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
 650         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
 651         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
 652
 653         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
 654         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
 655         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
 656         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
 657
 658         if (init_node_data(ibdev))
 659                 goto err_map;
 660
 661         spin_lock_init(&ibdev->sm_lock);
 662         mutex_init(&ibdev->cap_mask_mutex);
 663
 664         if (ib_register_device(&ibdev->ib_dev))
 665                 goto err_map;
 666
 667         if (mlx4_ib_mad_init(ibdev))
 668                 goto err_reg;
 669
 670         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
 671                 if (device_create_file(&ibdev->ib_dev.dev,
 672                                        mlx4_class_attributes[i]))
 673                         goto err_reg;
 674         }
 675
 676         return ibdev;
 677
 678 err_reg:
 679         ib_unregister_device(&ibdev->ib_dev);
 680
 681 err_map:
 682         iounmap(ibdev->uar_map);
 683
 684 err_uar:
 685         mlx4_uar_free(dev, &ibdev->priv_uar);
 686
 687 err_pd:
 688         mlx4_pd_free(dev, ibdev->priv_pdn);
 689
 690 err_dealloc:
 691         ib_dealloc_device(&ibdev->ib_dev);
 692
 693         return NULL;
 694 }
 695
 696 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
 697 {
 698         struct mlx4_ib_dev *ibdev = ibdev_ptr;
 699         int p;
 700
 701         mlx4_ib_mad_cleanup(ibdev);
 702         ib_unregister_device(&ibdev->ib_dev);
 703
 704         for (p = 1; p <= ibdev->num_ports; ++p)
 705                 mlx4_CLOSE_PORT(dev, p);
 706
 707         iounmap(ibdev->uar_map);
 708         mlx4_uar_free(dev, &ibdev->priv_uar);
 709         mlx4_pd_free(dev, ibdev->priv_pdn);
 710         ib_dealloc_device(&ibdev->ib_dev);
 711 }
 712
 713 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
 714                           enum mlx4_dev_event event, int port)
 715 {
 716         struct ib_event ibev;
 717         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
 718
 719         if (port > ibdev->num_ports)
 720                 return;
 721
 722         switch (event) {
 723         case MLX4_DEV_EVENT_PORT_UP:
 724                 ibev.event = IB_EVENT_PORT_ACTIVE;
 725                 break;
 726
 727         case MLX4_DEV_EVENT_PORT_DOWN:
 728                 ibev.event = IB_EVENT_PORT_ERR;
 729                 break;
 730
 731         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
 732                 ibev.event = IB_EVENT_DEVICE_FATAL;
 733                 break;
 734
 735         default:
 736                 return;
 737         }
 738
 739         ibev.device           = ibdev_ptr;
 740         ibev.element.port_num = port;
 741
 742         ib_dispatch_event(&ibev);
 743 }
 744
 745 static struct mlx4_interface mlx4_ib_interface = {
 746         .add    = mlx4_ib_add,
 747         .remove = mlx4_ib_remove,
 748         .event  = mlx4_ib_event
 749 };
 750
 751 static int __init mlx4_ib_init(void)
 752 {
 753         return mlx4_register_interface(&mlx4_ib_interface);
 754 }
 755
 756 static void __exit mlx4_ib_cleanup(void)
 757 {
 758         mlx4_unregister_interface(&mlx4_ib_interface);
 759 }
 760
 761 module_init(mlx4_ib_init);
 762 module_exit(mlx4_ib_cleanup);