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