drivers/infiniband/hw/cxgb4/provider.c

   1 /*
   2  * Copyright (c) 2009-2010 Chelsio, 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 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/device.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/delay.h>
  38 #include <linux/errno.h>
  39 #include <linux/list.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/ethtool.h>
  42 #include <linux/rtnetlink.h>
  43 #include <linux/inetdevice.h>
  44 #include <linux/io.h>
  45
  46 #include <asm/irq.h>
  47 #include <asm/byteorder.h>
  48
  49 #include <rdma/iw_cm.h>
  50 #include <rdma/ib_verbs.h>
  51 #include <rdma/ib_smi.h>
  52 #include <rdma/ib_umem.h>
  53 #include <rdma/ib_user_verbs.h>
  54
  55 #include "iw_cxgb4.h"
  56
  57 static int fastreg_support = 1;
  58 module_param(fastreg_support, int, 0644);
  59 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)");
  60
  61 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd,
  62                                     struct ib_ah_attr *ah_attr,
  63                                     struct ib_udata *udata)
  64
  65 {
  66         return ERR_PTR(-ENOSYS);
  67 }
  68
  69 static int c4iw_ah_destroy(struct ib_ah *ah)
  70 {
  71         return -ENOSYS;
  72 }
  73
  74 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  75 {
  76         return -ENOSYS;
  77 }
  78
  79 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  80 {
  81         return -ENOSYS;
  82 }
  83
  84 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags,
  85                             u8 port_num, const struct ib_wc *in_wc,
  86                             const struct ib_grh *in_grh,
  87                             const struct ib_mad_hdr *in_mad,
  88                             size_t in_mad_size,
  89                             struct ib_mad_hdr *out_mad,
  90                             size_t *out_mad_size,
  91                             u16 *out_mad_pkey_index)
  92 {
  93         return -ENOSYS;
  94 }
  95
  96 static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
  97 {
  98         struct c4iw_dev *rhp = to_c4iw_dev(context->device);
  99         struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
 100         struct c4iw_mm_entry *mm, *tmp;
 101
 102         PDBG("%s context %p\n", __func__, context);
 103         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
 104                 kfree(mm);
 105         c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
 106         kfree(ucontext);
 107         return 0;
 108 }
 109
 110 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
 111                                                struct ib_udata *udata)
 112 {
 113         struct c4iw_ucontext *context;
 114         struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
 115         static int warned;
 116         struct c4iw_alloc_ucontext_resp uresp;
 117         int ret = 0;
 118         struct c4iw_mm_entry *mm = NULL;
 119
 120         PDBG("%s ibdev %p\n", __func__, ibdev);
 121         context = kzalloc(sizeof(*context), GFP_KERNEL);
 122         if (!context) {
 123                 ret = -ENOMEM;
 124                 goto err;
 125         }
 126
 127         c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
 128         INIT_LIST_HEAD(&context->mmaps);
 129         spin_lock_init(&context->mmap_lock);
 130
 131         if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
 132                 if (!warned++)
 133                         pr_err(MOD "Warning - downlevel libcxgb4 (non-fatal), device status page disabled.");
 134                 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
 135         } else {
 136                 mm = kmalloc(sizeof(*mm), GFP_KERNEL);
 137                 if (!mm) {
 138                         ret = -ENOMEM;
 139                         goto err_free;
 140                 }
 141
 142                 uresp.status_page_size = PAGE_SIZE;
 143
 144                 spin_lock(&context->mmap_lock);
 145                 uresp.status_page_key = context->key;
 146                 context->key += PAGE_SIZE;
 147                 spin_unlock(&context->mmap_lock);
 148
 149                 ret = ib_copy_to_udata(udata, &uresp,
 150                                        sizeof(uresp) - sizeof(uresp.reserved));
 151                 if (ret)
 152                         goto err_mm;
 153
 154                 mm->key = uresp.status_page_key;
 155                 mm->addr = virt_to_phys(rhp->rdev.status_page);
 156                 mm->len = PAGE_SIZE;
 157                 insert_mmap(context, mm);
 158         }
 159         return &context->ibucontext;
 160 err_mm:
 161         kfree(mm);
 162 err_free:
 163         kfree(context);
 164 err:
 165         return ERR_PTR(ret);
 166 }
 167
 168 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 169 {
 170         int len = vma->vm_end - vma->vm_start;
 171         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 172         struct c4iw_rdev *rdev;
 173         int ret = 0;
 174         struct c4iw_mm_entry *mm;
 175         struct c4iw_ucontext *ucontext;
 176         u64 addr;
 177
 178         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
 179              key, len);
 180
 181         if (vma->vm_start & (PAGE_SIZE-1))
 182                 return -EINVAL;
 183
 184         rdev = &(to_c4iw_dev(context->device)->rdev);
 185         ucontext = to_c4iw_ucontext(context);
 186
 187         mm = remove_mmap(ucontext, key, len);
 188         if (!mm)
 189                 return -EINVAL;
 190         addr = mm->addr;
 191         kfree(mm);
 192
 193         if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
 194             (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
 195                     pci_resource_len(rdev->lldi.pdev, 0)))) {
 196
 197                 /*
 198                  * MA_SYNC register...
 199                  */
 200                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 201                 ret = io_remap_pfn_range(vma, vma->vm_start,
 202                                          addr >> PAGE_SHIFT,
 203                                          len, vma->vm_page_prot);
 204         } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
 205                    (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
 206                     pci_resource_len(rdev->lldi.pdev, 2)))) {
 207
 208                 /*
 209                  * Map user DB or OCQP memory...
 210                  */
 211                 if (addr >= rdev->oc_mw_pa)
 212                         vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
 213                 else {
 214                         if (!is_t4(rdev->lldi.adapter_type))
 215                                 vma->vm_page_prot =
 216                                         t4_pgprot_wc(vma->vm_page_prot);
 217                         else
 218                                 vma->vm_page_prot =
 219                                         pgprot_noncached(vma->vm_page_prot);
 220                 }
 221                 ret = io_remap_pfn_range(vma, vma->vm_start,
 222                                          addr >> PAGE_SHIFT,
 223                                          len, vma->vm_page_prot);
 224         } else {
 225
 226                 /*
 227                  * Map WQ or CQ contig dma memory...
 228                  */
 229                 ret = remap_pfn_range(vma, vma->vm_start,
 230                                       addr >> PAGE_SHIFT,
 231                                       len, vma->vm_page_prot);
 232         }
 233
 234         return ret;
 235 }
 236
 237 static int c4iw_deallocate_pd(struct ib_pd *pd)
 238 {
 239         struct c4iw_dev *rhp;
 240         struct c4iw_pd *php;
 241
 242         php = to_c4iw_pd(pd);
 243         rhp = php->rhp;
 244         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
 245         c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
 246         mutex_lock(&rhp->rdev.stats.lock);
 247         rhp->rdev.stats.pd.cur--;
 248         mutex_unlock(&rhp->rdev.stats.lock);
 249         kfree(php);
 250         return 0;
 251 }
 252
 253 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
 254                                       struct ib_ucontext *context,
 255                                       struct ib_udata *udata)
 256 {
 257         struct c4iw_pd *php;
 258         u32 pdid;
 259         struct c4iw_dev *rhp;
 260
 261         PDBG("%s ibdev %p\n", __func__, ibdev);
 262         rhp = (struct c4iw_dev *) ibdev;
 263         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 264         if (!pdid)
 265                 return ERR_PTR(-EINVAL);
 266         php = kzalloc(sizeof(*php), GFP_KERNEL);
 267         if (!php) {
 268                 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
 269                 return ERR_PTR(-ENOMEM);
 270         }
 271         php->pdid = pdid;
 272         php->rhp = rhp;
 273         if (context) {
 274                 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
 275                         c4iw_deallocate_pd(&php->ibpd);
 276                         return ERR_PTR(-EFAULT);
 277                 }
 278         }
 279         mutex_lock(&rhp->rdev.stats.lock);
 280         rhp->rdev.stats.pd.cur++;
 281         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 282                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 283         mutex_unlock(&rhp->rdev.stats.lock);
 284         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
 285         return &php->ibpd;
 286 }
 287
 288 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 289                            u16 *pkey)
 290 {
 291         PDBG("%s ibdev %p\n", __func__, ibdev);
 292         *pkey = 0;
 293         return 0;
 294 }
 295
 296 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 297                           union ib_gid *gid)
 298 {
 299         struct c4iw_dev *dev;
 300
 301         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 302                __func__, ibdev, port, index, gid);
 303         dev = to_c4iw_dev(ibdev);
 304         BUG_ON(port == 0);
 305         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 306         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 307         return 0;
 308 }
 309
 310 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 311                              struct ib_udata *uhw)
 312 {
 313
 314         struct c4iw_dev *dev;
 315
 316         PDBG("%s ibdev %p\n", __func__, ibdev);
 317
 318         if (uhw->inlen || uhw->outlen)
 319                 return -EINVAL;
 320
 321         dev = to_c4iw_dev(ibdev);
 322         memset(props, 0, sizeof *props);
 323         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 324         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 325         props->fw_ver = dev->rdev.lldi.fw_vers;
 326         props->device_cap_flags = dev->device_cap_flags;
 327         props->page_size_cap = T4_PAGESIZE_MASK;
 328         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 329         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 330         props->max_mr_size = T4_MAX_MR_SIZE;
 331         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
 332         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 333         props->max_sge = T4_MAX_RECV_SGE;
 334         props->max_sge_rd = 1;
 335         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
 336         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
 337                                     c4iw_max_read_depth);
 338         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 339         props->max_cq = dev->rdev.lldi.vr->qp.size;
 340         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
 341         props->max_mr = c4iw_num_stags(&dev->rdev);
 342         props->max_pd = T4_MAX_NUM_PD;
 343         props->local_ca_ack_delay = 0;
 344         props->max_fast_reg_page_list_len =
 345                 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
 346
 347         return 0;
 348 }
 349
 350 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 351                            struct ib_port_attr *props)
 352 {
 353         struct c4iw_dev *dev;
 354         struct net_device *netdev;
 355         struct in_device *inetdev;
 356
 357         PDBG("%s ibdev %p\n", __func__, ibdev);
 358
 359         dev = to_c4iw_dev(ibdev);
 360         netdev = dev->rdev.lldi.ports[port-1];
 361
 362         memset(props, 0, sizeof(struct ib_port_attr));
 363         props->max_mtu = IB_MTU_4096;
 364         if (netdev->mtu >= 4096)
 365                 props->active_mtu = IB_MTU_4096;
 366         else if (netdev->mtu >= 2048)
 367                 props->active_mtu = IB_MTU_2048;
 368         else if (netdev->mtu >= 1024)
 369                 props->active_mtu = IB_MTU_1024;
 370         else if (netdev->mtu >= 512)
 371                 props->active_mtu = IB_MTU_512;
 372         else
 373                 props->active_mtu = IB_MTU_256;
 374
 375         if (!netif_carrier_ok(netdev))
 376                 props->state = IB_PORT_DOWN;
 377         else {
 378                 inetdev = in_dev_get(netdev);
 379                 if (inetdev) {
 380                         if (inetdev->ifa_list)
 381                                 props->state = IB_PORT_ACTIVE;
 382                         else
 383                                 props->state = IB_PORT_INIT;
 384                         in_dev_put(inetdev);
 385                 } else
 386                         props->state = IB_PORT_INIT;
 387         }
 388
 389         props->port_cap_flags =
 390             IB_PORT_CM_SUP |
 391             IB_PORT_SNMP_TUNNEL_SUP |
 392             IB_PORT_REINIT_SUP |
 393             IB_PORT_DEVICE_MGMT_SUP |
 394             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 395         props->gid_tbl_len = 1;
 396         props->pkey_tbl_len = 1;
 397         props->active_width = 2;
 398         props->active_speed = IB_SPEED_DDR;
 399         props->max_msg_sz = -1;
 400
 401         return 0;
 402 }
 403
 404 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
 405                         char *buf)
 406 {
 407         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 408                                                  ibdev.dev);
 409         PDBG("%s dev 0x%p\n", __func__, dev);
 410         return sprintf(buf, "%d\n",
 411                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 412 }
 413
 414 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
 415                         char *buf)
 416 {
 417         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 418                                                  ibdev.dev);
 419         struct ethtool_drvinfo info;
 420         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 421
 422         PDBG("%s dev 0x%p\n", __func__, dev);
 423         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 424         return sprintf(buf, "%s\n", info.driver);
 425 }
 426
 427 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
 428                           char *buf)
 429 {
 430         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 431                                                  ibdev.dev);
 432         PDBG("%s dev 0x%p\n", __func__, dev);
 433         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 434                        c4iw_dev->rdev.lldi.pdev->device);
 435 }
 436
 437 enum counters {
 438         IP4INSEGS,
 439         IP4OUTSEGS,
 440         IP4RETRANSSEGS,
 441         IP4OUTRSTS,
 442         IP6INSEGS,
 443         IP6OUTSEGS,
 444         IP6RETRANSSEGS,
 445         IP6OUTRSTS,
 446         NR_COUNTERS
 447 };
 448
 449 static const char * const names[] = {
 450         [IP4INSEGS] = "ip4InSegs",
 451         [IP4OUTSEGS] = "ip4OutSegs",
 452         [IP4RETRANSSEGS] = "ip4RetransSegs",
 453         [IP4OUTRSTS] = "ip4OutRsts",
 454         [IP6INSEGS] = "ip6InSegs",
 455         [IP6OUTSEGS] = "ip6OutSegs",
 456         [IP6RETRANSSEGS] = "ip6RetransSegs",
 457         [IP6OUTRSTS] = "ip6OutRsts"
 458 };
 459
 460 static struct rdma_hw_stats *c4iw_alloc_stats(struct ib_device *ibdev,
 461                                               u8 port_num)
 462 {
 463         BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
 464
 465         if (port_num != 0)
 466                 return NULL;
 467
 468         return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
 469                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
 470 }
 471
 472 static int c4iw_get_mib(struct ib_device *ibdev,
 473                         struct rdma_hw_stats *stats,
 474                         u8 port, int index)
 475 {
 476         struct tp_tcp_stats v4, v6;
 477         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 478
 479         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 480         stats->value[IP4INSEGS] = v4.tcp_in_segs;
 481         stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
 482         stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
 483         stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
 484         stats->value[IP6INSEGS] = v6.tcp_in_segs;
 485         stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
 486         stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
 487         stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
 488
 489         return stats->num_counters;
 490 }
 491
 492 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 493 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 494 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
 495
 496 static struct device_attribute *c4iw_class_attributes[] = {
 497         &dev_attr_hw_rev,
 498         &dev_attr_hca_type,
 499         &dev_attr_board_id,
 500 };
 501
 502 static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
 503                                struct ib_port_immutable *immutable)
 504 {
 505         struct ib_port_attr attr;
 506         int err;
 507
 508         err = c4iw_query_port(ibdev, port_num, &attr);
 509         if (err)
 510                 return err;
 511
 512         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 513         immutable->gid_tbl_len = attr.gid_tbl_len;
 514         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
 515
 516         return 0;
 517 }
 518
 519 static void get_dev_fw_str(struct ib_device *dev, char *str,
 520                            size_t str_len)
 521 {
 522         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 523                                                  ibdev);
 524         PDBG("%s dev 0x%p\n", __func__, dev);
 525
 526         snprintf(str, str_len, "%u.%u.%u.%u",
 527                  FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
 528                  FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
 529                  FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
 530                  FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
 531 }
 532
 533 int c4iw_register_device(struct c4iw_dev *dev)
 534 {
 535         int ret;
 536         int i;
 537
 538         PDBG("%s c4iw_dev %p\n", __func__, dev);
 539         BUG_ON(!dev->rdev.lldi.ports[0]);
 540         strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
 541         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 542         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 543         dev->ibdev.owner = THIS_MODULE;
 544         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 545         if (fastreg_support)
 546                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 547         dev->ibdev.local_dma_lkey = 0;
 548         dev->ibdev.uverbs_cmd_mask =
 549             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 550             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 551             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 552             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 553             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 554             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 555             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 556             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 557             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 558             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 559             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 560             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 561             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 562             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 563             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 564             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 565             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 566             (1ull << IB_USER_VERBS_CMD_POST_RECV);
 567         dev->ibdev.node_type = RDMA_NODE_RNIC;
 568         BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
 569         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 570         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 571         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
 572         dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev);
 573         dev->ibdev.query_device = c4iw_query_device;
 574         dev->ibdev.query_port = c4iw_query_port;
 575         dev->ibdev.query_pkey = c4iw_query_pkey;
 576         dev->ibdev.query_gid = c4iw_query_gid;
 577         dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext;
 578         dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext;
 579         dev->ibdev.mmap = c4iw_mmap;
 580         dev->ibdev.alloc_pd = c4iw_allocate_pd;
 581         dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
 582         dev->ibdev.create_ah = c4iw_ah_create;
 583         dev->ibdev.destroy_ah = c4iw_ah_destroy;
 584         dev->ibdev.create_qp = c4iw_create_qp;
 585         dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 586         dev->ibdev.query_qp = c4iw_ib_query_qp;
 587         dev->ibdev.destroy_qp = c4iw_destroy_qp;
 588         dev->ibdev.create_cq = c4iw_create_cq;
 589         dev->ibdev.destroy_cq = c4iw_destroy_cq;
 590         dev->ibdev.resize_cq = c4iw_resize_cq;
 591         dev->ibdev.poll_cq = c4iw_poll_cq;
 592         dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 593         dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
 594         dev->ibdev.dereg_mr = c4iw_dereg_mr;
 595         dev->ibdev.alloc_mw = c4iw_alloc_mw;
 596         dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
 597         dev->ibdev.alloc_mr = c4iw_alloc_mr;
 598         dev->ibdev.map_mr_sg = c4iw_map_mr_sg;
 599         dev->ibdev.attach_mcast = c4iw_multicast_attach;
 600         dev->ibdev.detach_mcast = c4iw_multicast_detach;
 601         dev->ibdev.process_mad = c4iw_process_mad;
 602         dev->ibdev.req_notify_cq = c4iw_arm_cq;
 603         dev->ibdev.post_send = c4iw_post_send;
 604         dev->ibdev.post_recv = c4iw_post_receive;
 605         dev->ibdev.alloc_hw_stats = c4iw_alloc_stats;
 606         dev->ibdev.get_hw_stats = c4iw_get_mib;
 607         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 608         dev->ibdev.get_port_immutable = c4iw_port_immutable;
 609         dev->ibdev.get_dev_fw_str = get_dev_fw_str;
 610         dev->ibdev.drain_sq = c4iw_drain_sq;
 611         dev->ibdev.drain_rq = c4iw_drain_rq;
 612
 613         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 614         if (!dev->ibdev.iwcm)
 615                 return -ENOMEM;
 616
 617         dev->ibdev.iwcm->connect = c4iw_connect;
 618         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 619         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 620         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 621         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 622         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 623         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 624         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 625         memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,
 626                sizeof(dev->ibdev.iwcm->ifname));
 627
 628         ret = ib_register_device(&dev->ibdev, NULL);
 629         if (ret)
 630                 goto bail1;
 631
 632         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) {
 633                 ret = device_create_file(&dev->ibdev.dev,
 634                                          c4iw_class_attributes[i]);
 635                 if (ret)
 636                         goto bail2;
 637         }
 638         return 0;
 639 bail2:
 640         ib_unregister_device(&dev->ibdev);
 641 bail1:
 642         kfree(dev->ibdev.iwcm);
 643         return ret;
 644 }
 645
 646 void c4iw_unregister_device(struct c4iw_dev *dev)
 647 {
 648         int i;
 649
 650         PDBG("%s c4iw_dev %p\n", __func__, dev);
 651         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i)
 652                 device_remove_file(&dev->ibdev.dev,
 653                                    c4iw_class_attributes[i]);
 654         ib_unregister_device(&dev->ibdev);
 655         kfree(dev->ibdev.iwcm);
 656         return;
 657 }