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 {
  64         return ERR_PTR(-ENOSYS);
  65 }
  66
  67 static int c4iw_ah_destroy(struct ib_ah *ah)
  68 {
  69         return -ENOSYS;
  70 }
  71
  72 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  73 {
  74         return -ENOSYS;
  75 }
  76
  77 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
  78 {
  79         return -ENOSYS;
  80 }
  81
  82 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags,
  83                             u8 port_num, struct ib_wc *in_wc,
  84                             struct ib_grh *in_grh, struct ib_mad *in_mad,
  85                             struct ib_mad *out_mad)
  86 {
  87         return -ENOSYS;
  88 }
  89
  90 static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
  91 {
  92         struct c4iw_dev *rhp = to_c4iw_dev(context->device);
  93         struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
  94         struct c4iw_mm_entry *mm, *tmp;
  95
  96         PDBG("%s context %p\n", __func__, context);
  97         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
  98                 kfree(mm);
  99         c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
 100         kfree(ucontext);
 101         return 0;
 102 }
 103
 104 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
 105                                                struct ib_udata *udata)
 106 {
 107         struct c4iw_ucontext *context;
 108         struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
 109         static int warned;
 110         struct c4iw_alloc_ucontext_resp uresp;
 111         int ret = 0;
 112         struct c4iw_mm_entry *mm = NULL;
 113
 114         PDBG("%s ibdev %p\n", __func__, ibdev);
 115         context = kzalloc(sizeof(*context), GFP_KERNEL);
 116         if (!context) {
 117                 ret = -ENOMEM;
 118                 goto err;
 119         }
 120
 121         c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
 122         INIT_LIST_HEAD(&context->mmaps);
 123         spin_lock_init(&context->mmap_lock);
 124
 125         if (udata->outlen < sizeof(uresp)) {
 126                 if (!warned++)
 127                         pr_err(MOD "Warning - downlevel libcxgb4 (non-fatal), device status page disabled.");
 128                 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
 129         } else {
 130                 mm = kmalloc(sizeof(*mm), GFP_KERNEL);
 131                 if (!mm) {
 132                         ret = -ENOMEM;
 133                         goto err_free;
 134                 }
 135
 136                 uresp.status_page_size = PAGE_SIZE;
 137
 138                 spin_lock(&context->mmap_lock);
 139                 uresp.status_page_key = context->key;
 140                 context->key += PAGE_SIZE;
 141                 spin_unlock(&context->mmap_lock);
 142
 143                 ret = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
 144                 if (ret)
 145                         goto err_mm;
 146
 147                 mm->key = uresp.status_page_key;
 148                 mm->addr = virt_to_phys(rhp->rdev.status_page);
 149                 mm->len = PAGE_SIZE;
 150                 insert_mmap(context, mm);
 151         }
 152         return &context->ibucontext;
 153 err_mm:
 154         kfree(mm);
 155 err_free:
 156         kfree(context);
 157 err:
 158         return ERR_PTR(ret);
 159 }
 160
 161 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 162 {
 163         int len = vma->vm_end - vma->vm_start;
 164         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 165         struct c4iw_rdev *rdev;
 166         int ret = 0;
 167         struct c4iw_mm_entry *mm;
 168         struct c4iw_ucontext *ucontext;
 169         u64 addr;
 170
 171         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
 172              key, len);
 173
 174         if (vma->vm_start & (PAGE_SIZE-1))
 175                 return -EINVAL;
 176
 177         rdev = &(to_c4iw_dev(context->device)->rdev);
 178         ucontext = to_c4iw_ucontext(context);
 179
 180         mm = remove_mmap(ucontext, key, len);
 181         if (!mm)
 182                 return -EINVAL;
 183         addr = mm->addr;
 184         kfree(mm);
 185
 186         if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
 187             (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
 188                     pci_resource_len(rdev->lldi.pdev, 0)))) {
 189
 190                 /*
 191                  * MA_SYNC register...
 192                  */
 193                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 194                 ret = io_remap_pfn_range(vma, vma->vm_start,
 195                                          addr >> PAGE_SHIFT,
 196                                          len, vma->vm_page_prot);
 197         } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
 198                    (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
 199                     pci_resource_len(rdev->lldi.pdev, 2)))) {
 200
 201                 /*
 202                  * Map user DB or OCQP memory...
 203                  */
 204                 if (addr >= rdev->oc_mw_pa)
 205                         vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
 206                 else {
 207                         if (is_t5(rdev->lldi.adapter_type))
 208                                 vma->vm_page_prot =
 209                                         t4_pgprot_wc(vma->vm_page_prot);
 210                         else
 211                                 vma->vm_page_prot =
 212                                         pgprot_noncached(vma->vm_page_prot);
 213                 }
 214                 ret = io_remap_pfn_range(vma, vma->vm_start,
 215                                          addr >> PAGE_SHIFT,
 216                                          len, vma->vm_page_prot);
 217         } else {
 218
 219                 /*
 220                  * Map WQ or CQ contig dma memory...
 221                  */
 222                 ret = remap_pfn_range(vma, vma->vm_start,
 223                                       addr >> PAGE_SHIFT,
 224                                       len, vma->vm_page_prot);
 225         }
 226
 227         return ret;
 228 }
 229
 230 static int c4iw_deallocate_pd(struct ib_pd *pd)
 231 {
 232         struct c4iw_dev *rhp;
 233         struct c4iw_pd *php;
 234
 235         php = to_c4iw_pd(pd);
 236         rhp = php->rhp;
 237         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
 238         c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
 239         mutex_lock(&rhp->rdev.stats.lock);
 240         rhp->rdev.stats.pd.cur--;
 241         mutex_unlock(&rhp->rdev.stats.lock);
 242         kfree(php);
 243         return 0;
 244 }
 245
 246 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
 247                                       struct ib_ucontext *context,
 248                                       struct ib_udata *udata)
 249 {
 250         struct c4iw_pd *php;
 251         u32 pdid;
 252         struct c4iw_dev *rhp;
 253
 254         PDBG("%s ibdev %p\n", __func__, ibdev);
 255         rhp = (struct c4iw_dev *) ibdev;
 256         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 257         if (!pdid)
 258                 return ERR_PTR(-EINVAL);
 259         php = kzalloc(sizeof(*php), GFP_KERNEL);
 260         if (!php) {
 261                 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
 262                 return ERR_PTR(-ENOMEM);
 263         }
 264         php->pdid = pdid;
 265         php->rhp = rhp;
 266         if (context) {
 267                 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
 268                         c4iw_deallocate_pd(&php->ibpd);
 269                         return ERR_PTR(-EFAULT);
 270                 }
 271         }
 272         mutex_lock(&rhp->rdev.stats.lock);
 273         rhp->rdev.stats.pd.cur++;
 274         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 275                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 276         mutex_unlock(&rhp->rdev.stats.lock);
 277         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
 278         return &php->ibpd;
 279 }
 280
 281 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 282                            u16 *pkey)
 283 {
 284         PDBG("%s ibdev %p\n", __func__, ibdev);
 285         *pkey = 0;
 286         return 0;
 287 }
 288
 289 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 290                           union ib_gid *gid)
 291 {
 292         struct c4iw_dev *dev;
 293
 294         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 295                __func__, ibdev, port, index, gid);
 296         dev = to_c4iw_dev(ibdev);
 297         BUG_ON(port == 0);
 298         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 299         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 300         return 0;
 301 }
 302
 303 static int c4iw_query_device(struct ib_device *ibdev,
 304                              struct ib_device_attr *props)
 305 {
 306
 307         struct c4iw_dev *dev;
 308         PDBG("%s ibdev %p\n", __func__, ibdev);
 309
 310         dev = to_c4iw_dev(ibdev);
 311         memset(props, 0, sizeof *props);
 312         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 313         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 314         props->fw_ver = dev->rdev.lldi.fw_vers;
 315         props->device_cap_flags = dev->device_cap_flags;
 316         props->page_size_cap = T4_PAGESIZE_MASK;
 317         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 318         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 319         props->max_mr_size = T4_MAX_MR_SIZE;
 320         props->max_qp = T4_MAX_NUM_QP;
 321         props->max_qp_wr = T4_MAX_QP_DEPTH;
 322         props->max_sge = T4_MAX_RECV_SGE;
 323         props->max_sge_rd = 1;
 324         props->max_qp_rd_atom = c4iw_max_read_depth;
 325         props->max_qp_init_rd_atom = c4iw_max_read_depth;
 326         props->max_cq = T4_MAX_NUM_CQ;
 327         props->max_cqe = T4_MAX_CQ_DEPTH;
 328         props->max_mr = c4iw_num_stags(&dev->rdev);
 329         props->max_pd = T4_MAX_NUM_PD;
 330         props->local_ca_ack_delay = 0;
 331         props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH;
 332
 333         return 0;
 334 }
 335
 336 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 337                            struct ib_port_attr *props)
 338 {
 339         struct c4iw_dev *dev;
 340         struct net_device *netdev;
 341         struct in_device *inetdev;
 342
 343         PDBG("%s ibdev %p\n", __func__, ibdev);
 344
 345         dev = to_c4iw_dev(ibdev);
 346         netdev = dev->rdev.lldi.ports[port-1];
 347
 348         memset(props, 0, sizeof(struct ib_port_attr));
 349         props->max_mtu = IB_MTU_4096;
 350         if (netdev->mtu >= 4096)
 351                 props->active_mtu = IB_MTU_4096;
 352         else if (netdev->mtu >= 2048)
 353                 props->active_mtu = IB_MTU_2048;
 354         else if (netdev->mtu >= 1024)
 355                 props->active_mtu = IB_MTU_1024;
 356         else if (netdev->mtu >= 512)
 357                 props->active_mtu = IB_MTU_512;
 358         else
 359                 props->active_mtu = IB_MTU_256;
 360
 361         if (!netif_carrier_ok(netdev))
 362                 props->state = IB_PORT_DOWN;
 363         else {
 364                 inetdev = in_dev_get(netdev);
 365                 if (inetdev) {
 366                         if (inetdev->ifa_list)
 367                                 props->state = IB_PORT_ACTIVE;
 368                         else
 369                                 props->state = IB_PORT_INIT;
 370                         in_dev_put(inetdev);
 371                 } else
 372                         props->state = IB_PORT_INIT;
 373         }
 374
 375         props->port_cap_flags =
 376             IB_PORT_CM_SUP |
 377             IB_PORT_SNMP_TUNNEL_SUP |
 378             IB_PORT_REINIT_SUP |
 379             IB_PORT_DEVICE_MGMT_SUP |
 380             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 381         props->gid_tbl_len = 1;
 382         props->pkey_tbl_len = 1;
 383         props->active_width = 2;
 384         props->active_speed = IB_SPEED_DDR;
 385         props->max_msg_sz = -1;
 386
 387         return 0;
 388 }
 389
 390 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
 391                         char *buf)
 392 {
 393         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 394                                                  ibdev.dev);
 395         PDBG("%s dev 0x%p\n", __func__, dev);
 396         return sprintf(buf, "%d\n",
 397                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 398 }
 399
 400 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
 401                            char *buf)
 402 {
 403         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 404                                                  ibdev.dev);
 405         PDBG("%s dev 0x%p\n", __func__, dev);
 406
 407         return sprintf(buf, "%u.%u.%u.%u\n",
 408                         FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers),
 409                         FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers),
 410                         FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers),
 411                         FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers));
 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 static int c4iw_get_mib(struct ib_device *ibdev,
 438                         union rdma_protocol_stats *stats)
 439 {
 440         struct tp_tcp_stats v4, v6;
 441         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 442
 443         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 444         memset(stats, 0, sizeof *stats);
 445         stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs;
 446         stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs;
 447         stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs;
 448         stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs;
 449
 450         return 0;
 451 }
 452
 453 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 454 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
 455 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 456 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
 457
 458 static struct device_attribute *c4iw_class_attributes[] = {
 459         &dev_attr_hw_rev,
 460         &dev_attr_fw_ver,
 461         &dev_attr_hca_type,
 462         &dev_attr_board_id,
 463 };
 464
 465 int c4iw_register_device(struct c4iw_dev *dev)
 466 {
 467         int ret;
 468         int i;
 469
 470         PDBG("%s c4iw_dev %p\n", __func__, dev);
 471         BUG_ON(!dev->rdev.lldi.ports[0]);
 472         strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
 473         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 474         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 475         dev->ibdev.owner = THIS_MODULE;
 476         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 477         if (fastreg_support)
 478                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 479         dev->ibdev.local_dma_lkey = 0;
 480         dev->ibdev.uverbs_cmd_mask =
 481             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 482             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 483             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 484             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 485             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 486             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 487             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 488             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 489             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 490             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 491             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 492             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 493             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 494             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 495             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 496             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 497             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 498             (1ull << IB_USER_VERBS_CMD_POST_RECV);
 499         dev->ibdev.node_type = RDMA_NODE_RNIC;
 500         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 501         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 502         dev->ibdev.num_comp_vectors = 1;
 503         dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev);
 504         dev->ibdev.query_device = c4iw_query_device;
 505         dev->ibdev.query_port = c4iw_query_port;
 506         dev->ibdev.query_pkey = c4iw_query_pkey;
 507         dev->ibdev.query_gid = c4iw_query_gid;
 508         dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext;
 509         dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext;
 510         dev->ibdev.mmap = c4iw_mmap;
 511         dev->ibdev.alloc_pd = c4iw_allocate_pd;
 512         dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
 513         dev->ibdev.create_ah = c4iw_ah_create;
 514         dev->ibdev.destroy_ah = c4iw_ah_destroy;
 515         dev->ibdev.create_qp = c4iw_create_qp;
 516         dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 517         dev->ibdev.query_qp = c4iw_ib_query_qp;
 518         dev->ibdev.destroy_qp = c4iw_destroy_qp;
 519         dev->ibdev.create_cq = c4iw_create_cq;
 520         dev->ibdev.destroy_cq = c4iw_destroy_cq;
 521         dev->ibdev.resize_cq = c4iw_resize_cq;
 522         dev->ibdev.poll_cq = c4iw_poll_cq;
 523         dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 524         dev->ibdev.reg_phys_mr = c4iw_register_phys_mem;
 525         dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem;
 526         dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
 527         dev->ibdev.dereg_mr = c4iw_dereg_mr;
 528         dev->ibdev.alloc_mw = c4iw_alloc_mw;
 529         dev->ibdev.bind_mw = c4iw_bind_mw;
 530         dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
 531         dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr;
 532         dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
 533         dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl;
 534         dev->ibdev.attach_mcast = c4iw_multicast_attach;
 535         dev->ibdev.detach_mcast = c4iw_multicast_detach;
 536         dev->ibdev.process_mad = c4iw_process_mad;
 537         dev->ibdev.req_notify_cq = c4iw_arm_cq;
 538         dev->ibdev.post_send = c4iw_post_send;
 539         dev->ibdev.post_recv = c4iw_post_receive;
 540         dev->ibdev.get_protocol_stats = c4iw_get_mib;
 541         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 542
 543         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 544         if (!dev->ibdev.iwcm)
 545                 return -ENOMEM;
 546
 547         dev->ibdev.iwcm->connect = c4iw_connect;
 548         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 549         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 550         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 551         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 552         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 553         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 554         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 555
 556         ret = ib_register_device(&dev->ibdev, NULL);
 557         if (ret)
 558                 goto bail1;
 559
 560         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) {
 561                 ret = device_create_file(&dev->ibdev.dev,
 562                                          c4iw_class_attributes[i]);
 563                 if (ret)
 564                         goto bail2;
 565         }
 566         return 0;
 567 bail2:
 568         ib_unregister_device(&dev->ibdev);
 569 bail1:
 570         kfree(dev->ibdev.iwcm);
 571         return ret;
 572 }
 573
 574 void c4iw_unregister_device(struct c4iw_dev *dev)
 575 {
 576         int i;
 577
 578         PDBG("%s c4iw_dev %p\n", __func__, dev);
 579         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i)
 580                 device_remove_file(&dev->ibdev.dev,
 581                                    c4iw_class_attributes[i]);
 582         ib_unregister_device(&dev->ibdev);
 583         kfree(dev->ibdev.iwcm);
 584         return;
 585 }