kernel/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) - sizeof(uresp.reserved)) {
 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,
 144                                        sizeof(uresp) - sizeof(uresp.reserved));
 145                 if (ret)
 146                         goto err_mm;
 147
 148                 mm->key = uresp.status_page_key;
 149                 mm->addr = virt_to_phys(rhp->rdev.status_page);
 150                 mm->len = PAGE_SIZE;
 151                 insert_mmap(context, mm);
 152         }
 153         return &context->ibucontext;
 154 err_mm:
 155         kfree(mm);
 156 err_free:
 157         kfree(context);
 158 err:
 159         return ERR_PTR(ret);
 160 }
 161
 162 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 163 {
 164         int len = vma->vm_end - vma->vm_start;
 165         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 166         struct c4iw_rdev *rdev;
 167         int ret = 0;
 168         struct c4iw_mm_entry *mm;
 169         struct c4iw_ucontext *ucontext;
 170         u64 addr;
 171
 172         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
 173              key, len);
 174
 175         if (vma->vm_start & (PAGE_SIZE-1))
 176                 return -EINVAL;
 177
 178         rdev = &(to_c4iw_dev(context->device)->rdev);
 179         ucontext = to_c4iw_ucontext(context);
 180
 181         mm = remove_mmap(ucontext, key, len);
 182         if (!mm)
 183                 return -EINVAL;
 184         addr = mm->addr;
 185         kfree(mm);
 186
 187         if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
 188             (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
 189                     pci_resource_len(rdev->lldi.pdev, 0)))) {
 190
 191                 /*
 192                  * MA_SYNC register...
 193                  */
 194                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 195                 ret = io_remap_pfn_range(vma, vma->vm_start,
 196                                          addr >> PAGE_SHIFT,
 197                                          len, vma->vm_page_prot);
 198         } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
 199                    (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
 200                     pci_resource_len(rdev->lldi.pdev, 2)))) {
 201
 202                 /*
 203                  * Map user DB or OCQP memory...
 204                  */
 205                 if (addr >= rdev->oc_mw_pa)
 206                         vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
 207                 else {
 208                         if (is_t5(rdev->lldi.adapter_type))
 209                                 vma->vm_page_prot =
 210                                         t4_pgprot_wc(vma->vm_page_prot);
 211                         else
 212                                 vma->vm_page_prot =
 213                                         pgprot_noncached(vma->vm_page_prot);
 214                 }
 215                 ret = io_remap_pfn_range(vma, vma->vm_start,
 216                                          addr >> PAGE_SHIFT,
 217                                          len, vma->vm_page_prot);
 218         } else {
 219
 220                 /*
 221                  * Map WQ or CQ contig dma memory...
 222                  */
 223                 ret = remap_pfn_range(vma, vma->vm_start,
 224                                       addr >> PAGE_SHIFT,
 225                                       len, vma->vm_page_prot);
 226         }
 227
 228         return ret;
 229 }
 230
 231 static int c4iw_deallocate_pd(struct ib_pd *pd)
 232 {
 233         struct c4iw_dev *rhp;
 234         struct c4iw_pd *php;
 235
 236         php = to_c4iw_pd(pd);
 237         rhp = php->rhp;
 238         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
 239         c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
 240         mutex_lock(&rhp->rdev.stats.lock);
 241         rhp->rdev.stats.pd.cur--;
 242         mutex_unlock(&rhp->rdev.stats.lock);
 243         kfree(php);
 244         return 0;
 245 }
 246
 247 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
 248                                       struct ib_ucontext *context,
 249                                       struct ib_udata *udata)
 250 {
 251         struct c4iw_pd *php;
 252         u32 pdid;
 253         struct c4iw_dev *rhp;
 254
 255         PDBG("%s ibdev %p\n", __func__, ibdev);
 256         rhp = (struct c4iw_dev *) ibdev;
 257         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 258         if (!pdid)
 259                 return ERR_PTR(-EINVAL);
 260         php = kzalloc(sizeof(*php), GFP_KERNEL);
 261         if (!php) {
 262                 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
 263                 return ERR_PTR(-ENOMEM);
 264         }
 265         php->pdid = pdid;
 266         php->rhp = rhp;
 267         if (context) {
 268                 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
 269                         c4iw_deallocate_pd(&php->ibpd);
 270                         return ERR_PTR(-EFAULT);
 271                 }
 272         }
 273         mutex_lock(&rhp->rdev.stats.lock);
 274         rhp->rdev.stats.pd.cur++;
 275         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 276                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 277         mutex_unlock(&rhp->rdev.stats.lock);
 278         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
 279         return &php->ibpd;
 280 }
 281
 282 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 283                            u16 *pkey)
 284 {
 285         PDBG("%s ibdev %p\n", __func__, ibdev);
 286         *pkey = 0;
 287         return 0;
 288 }
 289
 290 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 291                           union ib_gid *gid)
 292 {
 293         struct c4iw_dev *dev;
 294
 295         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 296                __func__, ibdev, port, index, gid);
 297         dev = to_c4iw_dev(ibdev);
 298         BUG_ON(port == 0);
 299         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 300         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 301         return 0;
 302 }
 303
 304 static int c4iw_query_device(struct ib_device *ibdev,
 305                              struct ib_device_attr *props)
 306 {
 307
 308         struct c4iw_dev *dev;
 309         PDBG("%s ibdev %p\n", __func__, ibdev);
 310
 311         dev = to_c4iw_dev(ibdev);
 312         memset(props, 0, sizeof *props);
 313         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 314         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 315         props->fw_ver = dev->rdev.lldi.fw_vers;
 316         props->device_cap_flags = dev->device_cap_flags;
 317         props->page_size_cap = T4_PAGESIZE_MASK;
 318         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 319         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 320         props->max_mr_size = T4_MAX_MR_SIZE;
 321         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
 322         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 323         props->max_sge = T4_MAX_RECV_SGE;
 324         props->max_sge_rd = 1;
 325         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
 326         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
 327                                     c4iw_max_read_depth);
 328         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 329         props->max_cq = dev->rdev.lldi.vr->qp.size;
 330         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
 331         props->max_mr = c4iw_num_stags(&dev->rdev);
 332         props->max_pd = T4_MAX_NUM_PD;
 333         props->local_ca_ack_delay = 0;
 334         props->max_fast_reg_page_list_len = t4_max_fr_depth(use_dsgl);
 335
 336         return 0;
 337 }
 338
 339 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 340                            struct ib_port_attr *props)
 341 {
 342         struct c4iw_dev *dev;
 343         struct net_device *netdev;
 344         struct in_device *inetdev;
 345
 346         PDBG("%s ibdev %p\n", __func__, ibdev);
 347
 348         dev = to_c4iw_dev(ibdev);
 349         netdev = dev->rdev.lldi.ports[port-1];
 350
 351         memset(props, 0, sizeof(struct ib_port_attr));
 352         props->max_mtu = IB_MTU_4096;
 353         if (netdev->mtu >= 4096)
 354                 props->active_mtu = IB_MTU_4096;
 355         else if (netdev->mtu >= 2048)
 356                 props->active_mtu = IB_MTU_2048;
 357         else if (netdev->mtu >= 1024)
 358                 props->active_mtu = IB_MTU_1024;
 359         else if (netdev->mtu >= 512)
 360                 props->active_mtu = IB_MTU_512;
 361         else
 362                 props->active_mtu = IB_MTU_256;
 363
 364         if (!netif_carrier_ok(netdev))
 365                 props->state = IB_PORT_DOWN;
 366         else {
 367                 inetdev = in_dev_get(netdev);
 368                 if (inetdev) {
 369                         if (inetdev->ifa_list)
 370                                 props->state = IB_PORT_ACTIVE;
 371                         else
 372                                 props->state = IB_PORT_INIT;
 373                         in_dev_put(inetdev);
 374                 } else
 375                         props->state = IB_PORT_INIT;
 376         }
 377
 378         props->port_cap_flags =
 379             IB_PORT_CM_SUP |
 380             IB_PORT_SNMP_TUNNEL_SUP |
 381             IB_PORT_REINIT_SUP |
 382             IB_PORT_DEVICE_MGMT_SUP |
 383             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 384         props->gid_tbl_len = 1;
 385         props->pkey_tbl_len = 1;
 386         props->active_width = 2;
 387         props->active_speed = IB_SPEED_DDR;
 388         props->max_msg_sz = -1;
 389
 390         return 0;
 391 }
 392
 393 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
 394                         char *buf)
 395 {
 396         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 397                                                  ibdev.dev);
 398         PDBG("%s dev 0x%p\n", __func__, dev);
 399         return sprintf(buf, "%d\n",
 400                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 401 }
 402
 403 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
 404                            char *buf)
 405 {
 406         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 407                                                  ibdev.dev);
 408         PDBG("%s dev 0x%p\n", __func__, dev);
 409
 410         return sprintf(buf, "%u.%u.%u.%u\n",
 411                         FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
 412                         FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
 413                         FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
 414                         FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
 415 }
 416
 417 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
 418                         char *buf)
 419 {
 420         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 421                                                  ibdev.dev);
 422         struct ethtool_drvinfo info;
 423         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 424
 425         PDBG("%s dev 0x%p\n", __func__, dev);
 426         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 427         return sprintf(buf, "%s\n", info.driver);
 428 }
 429
 430 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
 431                           char *buf)
 432 {
 433         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 434                                                  ibdev.dev);
 435         PDBG("%s dev 0x%p\n", __func__, dev);
 436         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 437                        c4iw_dev->rdev.lldi.pdev->device);
 438 }
 439
 440 static int c4iw_get_mib(struct ib_device *ibdev,
 441                         union rdma_protocol_stats *stats)
 442 {
 443         struct tp_tcp_stats v4, v6;
 444         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 445
 446         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 447         memset(stats, 0, sizeof *stats);
 448         stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs;
 449         stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs;
 450         stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs;
 451         stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs;
 452
 453         return 0;
 454 }
 455
 456 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 457 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
 458 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 459 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
 460
 461 static struct device_attribute *c4iw_class_attributes[] = {
 462         &dev_attr_hw_rev,
 463         &dev_attr_fw_ver,
 464         &dev_attr_hca_type,
 465         &dev_attr_board_id,
 466 };
 467
 468 int c4iw_register_device(struct c4iw_dev *dev)
 469 {
 470         int ret;
 471         int i;
 472
 473         PDBG("%s c4iw_dev %p\n", __func__, dev);
 474         BUG_ON(!dev->rdev.lldi.ports[0]);
 475         strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
 476         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 477         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 478         dev->ibdev.owner = THIS_MODULE;
 479         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 480         if (fastreg_support)
 481                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 482         dev->ibdev.local_dma_lkey = 0;
 483         dev->ibdev.uverbs_cmd_mask =
 484             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 485             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 486             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 487             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 488             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 489             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 490             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 491             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 492             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 493             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 494             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 495             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 496             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 497             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 498             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 499             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 500             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 501             (1ull << IB_USER_VERBS_CMD_POST_RECV);
 502         dev->ibdev.node_type = RDMA_NODE_RNIC;
 503         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 504         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 505         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
 506         dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev);
 507         dev->ibdev.query_device = c4iw_query_device;
 508         dev->ibdev.query_port = c4iw_query_port;
 509         dev->ibdev.query_pkey = c4iw_query_pkey;
 510         dev->ibdev.query_gid = c4iw_query_gid;
 511         dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext;
 512         dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext;
 513         dev->ibdev.mmap = c4iw_mmap;
 514         dev->ibdev.alloc_pd = c4iw_allocate_pd;
 515         dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
 516         dev->ibdev.create_ah = c4iw_ah_create;
 517         dev->ibdev.destroy_ah = c4iw_ah_destroy;
 518         dev->ibdev.create_qp = c4iw_create_qp;
 519         dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 520         dev->ibdev.query_qp = c4iw_ib_query_qp;
 521         dev->ibdev.destroy_qp = c4iw_destroy_qp;
 522         dev->ibdev.create_cq = c4iw_create_cq;
 523         dev->ibdev.destroy_cq = c4iw_destroy_cq;
 524         dev->ibdev.resize_cq = c4iw_resize_cq;
 525         dev->ibdev.poll_cq = c4iw_poll_cq;
 526         dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 527         dev->ibdev.reg_phys_mr = c4iw_register_phys_mem;
 528         dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem;
 529         dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
 530         dev->ibdev.dereg_mr = c4iw_dereg_mr;
 531         dev->ibdev.alloc_mw = c4iw_alloc_mw;
 532         dev->ibdev.bind_mw = c4iw_bind_mw;
 533         dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
 534         dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr;
 535         dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
 536         dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl;
 537         dev->ibdev.attach_mcast = c4iw_multicast_attach;
 538         dev->ibdev.detach_mcast = c4iw_multicast_detach;
 539         dev->ibdev.process_mad = c4iw_process_mad;
 540         dev->ibdev.req_notify_cq = c4iw_arm_cq;
 541         dev->ibdev.post_send = c4iw_post_send;
 542         dev->ibdev.post_recv = c4iw_post_receive;
 543         dev->ibdev.get_protocol_stats = c4iw_get_mib;
 544         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 545
 546         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 547         if (!dev->ibdev.iwcm)
 548                 return -ENOMEM;
 549
 550         dev->ibdev.iwcm->connect = c4iw_connect;
 551         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 552         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 553         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 554         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 555         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 556         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 557         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 558
 559         ret = ib_register_device(&dev->ibdev, NULL);
 560         if (ret)
 561                 goto bail1;
 562
 563         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) {
 564                 ret = device_create_file(&dev->ibdev.dev,
 565                                          c4iw_class_attributes[i]);
 566                 if (ret)
 567                         goto bail2;
 568         }
 569         return 0;
 570 bail2:
 571         ib_unregister_device(&dev->ibdev);
 572 bail1:
 573         kfree(dev->ibdev.iwcm);
 574         return ret;
 575 }
 576
 577 void c4iw_unregister_device(struct c4iw_dev *dev)
 578 {
 579         int i;
 580
 581         PDBG("%s c4iw_dev %p\n", __func__, dev);
 582         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i)
 583                 device_remove_file(&dev->ibdev.dev,
 584                                    c4iw_class_attributes[i]);
 585         ib_unregister_device(&dev->ibdev);
 586         kfree(dev->ibdev.iwcm);
 587         return;
 588 }