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 void c4iw_dealloc_ucontext(struct ib_ucontext *context)
  62 {
  63         struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
  64         struct c4iw_dev *rhp;
  65         struct c4iw_mm_entry *mm, *tmp;
  66
  67         pr_debug("context %p\n", context);
  68         rhp = to_c4iw_dev(ucontext->ibucontext.device);
  69
  70         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
  71                 kfree(mm);
  72         c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
  73 }
  74
  75 static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext,
  76                                struct ib_udata *udata)
  77 {
  78         struct ib_device *ibdev = ucontext->device;
  79         struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext);
  80         struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
  81         struct c4iw_alloc_ucontext_resp uresp;
  82         int ret = 0;
  83         struct c4iw_mm_entry *mm = NULL;
  84
  85         pr_debug("ibdev %p\n", ibdev);
  86         c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
  87         INIT_LIST_HEAD(&context->mmaps);
  88         spin_lock_init(&context->mmap_lock);
  89
  90         if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
  91                 pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n");
  92                 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
  93         } else {
  94                 mm = kmalloc(sizeof(*mm), GFP_KERNEL);
  95                 if (!mm) {
  96                         ret = -ENOMEM;
  97                         goto err;
  98                 }
  99
 100                 uresp.status_page_size = PAGE_SIZE;
 101
 102                 spin_lock(&context->mmap_lock);
 103                 uresp.status_page_key = context->key;
 104                 context->key += PAGE_SIZE;
 105                 spin_unlock(&context->mmap_lock);
 106
 107                 ret = ib_copy_to_udata(udata, &uresp,
 108                                        sizeof(uresp) - sizeof(uresp.reserved));
 109                 if (ret)
 110                         goto err_mm;
 111
 112                 mm->key = uresp.status_page_key;
 113                 mm->addr = virt_to_phys(rhp->rdev.status_page);
 114                 mm->len = PAGE_SIZE;
 115                 insert_mmap(context, mm);
 116         }
 117         return 0;
 118 err_mm:
 119         kfree(mm);
 120 err:
 121         return ret;
 122 }
 123
 124 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 125 {
 126         int len = vma->vm_end - vma->vm_start;
 127         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 128         struct c4iw_rdev *rdev;
 129         int ret = 0;
 130         struct c4iw_mm_entry *mm;
 131         struct c4iw_ucontext *ucontext;
 132         u64 addr;
 133
 134         pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff,
 135                  key, len);
 136
 137         if (vma->vm_start & (PAGE_SIZE-1))
 138                 return -EINVAL;
 139
 140         rdev = &(to_c4iw_dev(context->device)->rdev);
 141         ucontext = to_c4iw_ucontext(context);
 142
 143         mm = remove_mmap(ucontext, key, len);
 144         if (!mm)
 145                 return -EINVAL;
 146         addr = mm->addr;
 147         kfree(mm);
 148
 149         if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
 150             (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
 151                     pci_resource_len(rdev->lldi.pdev, 0)))) {
 152
 153                 /*
 154                  * MA_SYNC register...
 155                  */
 156                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 157                 ret = io_remap_pfn_range(vma, vma->vm_start,
 158                                          addr >> PAGE_SHIFT,
 159                                          len, vma->vm_page_prot);
 160         } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
 161                    (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
 162                     pci_resource_len(rdev->lldi.pdev, 2)))) {
 163
 164                 /*
 165                  * Map user DB or OCQP memory...
 166                  */
 167                 if (addr >= rdev->oc_mw_pa)
 168                         vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
 169                 else {
 170                         if (!is_t4(rdev->lldi.adapter_type))
 171                                 vma->vm_page_prot =
 172                                         t4_pgprot_wc(vma->vm_page_prot);
 173                         else
 174                                 vma->vm_page_prot =
 175                                         pgprot_noncached(vma->vm_page_prot);
 176                 }
 177                 ret = io_remap_pfn_range(vma, vma->vm_start,
 178                                          addr >> PAGE_SHIFT,
 179                                          len, vma->vm_page_prot);
 180         } else {
 181
 182                 /*
 183                  * Map WQ or CQ contig dma memory...
 184                  */
 185                 ret = remap_pfn_range(vma, vma->vm_start,
 186                                       addr >> PAGE_SHIFT,
 187                                       len, vma->vm_page_prot);
 188         }
 189
 190         return ret;
 191 }
 192
 193 static void c4iw_deallocate_pd(struct ib_pd *pd)
 194 {
 195         struct c4iw_dev *rhp;
 196         struct c4iw_pd *php;
 197
 198         php = to_c4iw_pd(pd);
 199         rhp = php->rhp;
 200         pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid);
 201         c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
 202         mutex_lock(&rhp->rdev.stats.lock);
 203         rhp->rdev.stats.pd.cur--;
 204         mutex_unlock(&rhp->rdev.stats.lock);
 205 }
 206
 207 static int c4iw_allocate_pd(struct ib_pd *pd, struct ib_ucontext *context,
 208                             struct ib_udata *udata)
 209 {
 210         struct c4iw_pd *php = to_c4iw_pd(pd);
 211         struct ib_device *ibdev = pd->device;
 212         u32 pdid;
 213         struct c4iw_dev *rhp;
 214
 215         pr_debug("ibdev %p\n", ibdev);
 216         rhp = (struct c4iw_dev *) ibdev;
 217         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 218         if (!pdid)
 219                 return -EINVAL;
 220
 221         php->pdid = pdid;
 222         php->rhp = rhp;
 223         if (context) {
 224                 struct c4iw_alloc_pd_resp uresp = {.pdid = php->pdid};
 225
 226                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 227                         c4iw_deallocate_pd(&php->ibpd);
 228                         return -EFAULT;
 229                 }
 230         }
 231         mutex_lock(&rhp->rdev.stats.lock);
 232         rhp->rdev.stats.pd.cur++;
 233         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 234                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 235         mutex_unlock(&rhp->rdev.stats.lock);
 236         pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php);
 237         return 0;
 238 }
 239
 240 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 241                            u16 *pkey)
 242 {
 243         pr_debug("ibdev %p\n", ibdev);
 244         *pkey = 0;
 245         return 0;
 246 }
 247
 248 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 249                           union ib_gid *gid)
 250 {
 251         struct c4iw_dev *dev;
 252
 253         pr_debug("ibdev %p, port %d, index %d, gid %p\n",
 254                  ibdev, port, index, gid);
 255         if (!port)
 256                 return -EINVAL;
 257         dev = to_c4iw_dev(ibdev);
 258         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 259         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 260         return 0;
 261 }
 262
 263 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 264                              struct ib_udata *uhw)
 265 {
 266
 267         struct c4iw_dev *dev;
 268
 269         pr_debug("ibdev %p\n", ibdev);
 270
 271         if (uhw->inlen || uhw->outlen)
 272                 return -EINVAL;
 273
 274         dev = to_c4iw_dev(ibdev);
 275         memset(props, 0, sizeof *props);
 276         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 277         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 278         props->fw_ver = dev->rdev.lldi.fw_vers;
 279         props->device_cap_flags = dev->device_cap_flags;
 280         props->page_size_cap = T4_PAGESIZE_MASK;
 281         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 282         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 283         props->max_mr_size = T4_MAX_MR_SIZE;
 284         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
 285         props->max_srq = dev->rdev.lldi.vr->srq.size;
 286         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 287         props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 288         props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
 289         props->max_recv_sge = T4_MAX_RECV_SGE;
 290         props->max_srq_sge = T4_MAX_RECV_SGE;
 291         props->max_sge_rd = 1;
 292         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
 293         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
 294                                     c4iw_max_read_depth);
 295         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 296         props->max_cq = dev->rdev.lldi.vr->qp.size;
 297         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
 298         props->max_mr = c4iw_num_stags(&dev->rdev);
 299         props->max_pd = T4_MAX_NUM_PD;
 300         props->local_ca_ack_delay = 0;
 301         props->max_fast_reg_page_list_len =
 302                 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
 303
 304         return 0;
 305 }
 306
 307 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 308                            struct ib_port_attr *props)
 309 {
 310         struct c4iw_dev *dev;
 311         struct net_device *netdev;
 312         struct in_device *inetdev;
 313
 314         pr_debug("ibdev %p\n", ibdev);
 315
 316         dev = to_c4iw_dev(ibdev);
 317         netdev = dev->rdev.lldi.ports[port-1];
 318         /* props being zeroed by the caller, avoid zeroing it here */
 319         props->max_mtu = IB_MTU_4096;
 320         props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
 321
 322         if (!netif_carrier_ok(netdev))
 323                 props->state = IB_PORT_DOWN;
 324         else {
 325                 inetdev = in_dev_get(netdev);
 326                 if (inetdev) {
 327                         if (inetdev->ifa_list)
 328                                 props->state = IB_PORT_ACTIVE;
 329                         else
 330                                 props->state = IB_PORT_INIT;
 331                         in_dev_put(inetdev);
 332                 } else
 333                         props->state = IB_PORT_INIT;
 334         }
 335
 336         props->port_cap_flags =
 337             IB_PORT_CM_SUP |
 338             IB_PORT_SNMP_TUNNEL_SUP |
 339             IB_PORT_REINIT_SUP |
 340             IB_PORT_DEVICE_MGMT_SUP |
 341             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 342         props->gid_tbl_len = 1;
 343         props->pkey_tbl_len = 1;
 344         props->active_width = 2;
 345         props->active_speed = IB_SPEED_DDR;
 346         props->max_msg_sz = -1;
 347
 348         return 0;
 349 }
 350
 351 static ssize_t hw_rev_show(struct device *dev,
 352                            struct device_attribute *attr, char *buf)
 353 {
 354         struct c4iw_dev *c4iw_dev =
 355                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 356
 357         pr_debug("dev 0x%p\n", dev);
 358         return sprintf(buf, "%d\n",
 359                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 360 }
 361 static DEVICE_ATTR_RO(hw_rev);
 362
 363 static ssize_t hca_type_show(struct device *dev,
 364                              struct device_attribute *attr, char *buf)
 365 {
 366         struct c4iw_dev *c4iw_dev =
 367                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 368         struct ethtool_drvinfo info;
 369         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 370
 371         pr_debug("dev 0x%p\n", dev);
 372         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 373         return sprintf(buf, "%s\n", info.driver);
 374 }
 375 static DEVICE_ATTR_RO(hca_type);
 376
 377 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
 378                              char *buf)
 379 {
 380         struct c4iw_dev *c4iw_dev =
 381                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 382
 383         pr_debug("dev 0x%p\n", dev);
 384         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 385                        c4iw_dev->rdev.lldi.pdev->device);
 386 }
 387 static DEVICE_ATTR_RO(board_id);
 388
 389 enum counters {
 390         IP4INSEGS,
 391         IP4OUTSEGS,
 392         IP4RETRANSSEGS,
 393         IP4OUTRSTS,
 394         IP6INSEGS,
 395         IP6OUTSEGS,
 396         IP6RETRANSSEGS,
 397         IP6OUTRSTS,
 398         NR_COUNTERS
 399 };
 400
 401 static const char * const names[] = {
 402         [IP4INSEGS] = "ip4InSegs",
 403         [IP4OUTSEGS] = "ip4OutSegs",
 404         [IP4RETRANSSEGS] = "ip4RetransSegs",
 405         [IP4OUTRSTS] = "ip4OutRsts",
 406         [IP6INSEGS] = "ip6InSegs",
 407         [IP6OUTSEGS] = "ip6OutSegs",
 408         [IP6RETRANSSEGS] = "ip6RetransSegs",
 409         [IP6OUTRSTS] = "ip6OutRsts"
 410 };
 411
 412 static struct rdma_hw_stats *c4iw_alloc_stats(struct ib_device *ibdev,
 413                                               u8 port_num)
 414 {
 415         BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
 416
 417         if (port_num != 0)
 418                 return NULL;
 419
 420         return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
 421                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
 422 }
 423
 424 static int c4iw_get_mib(struct ib_device *ibdev,
 425                         struct rdma_hw_stats *stats,
 426                         u8 port, int index)
 427 {
 428         struct tp_tcp_stats v4, v6;
 429         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 430
 431         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 432         stats->value[IP4INSEGS] = v4.tcp_in_segs;
 433         stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
 434         stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
 435         stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
 436         stats->value[IP6INSEGS] = v6.tcp_in_segs;
 437         stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
 438         stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
 439         stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
 440
 441         return stats->num_counters;
 442 }
 443
 444 static struct attribute *c4iw_class_attributes[] = {
 445         &dev_attr_hw_rev.attr,
 446         &dev_attr_hca_type.attr,
 447         &dev_attr_board_id.attr,
 448         NULL
 449 };
 450
 451 static const struct attribute_group c4iw_attr_group = {
 452         .attrs = c4iw_class_attributes,
 453 };
 454
 455 static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
 456                                struct ib_port_immutable *immutable)
 457 {
 458         struct ib_port_attr attr;
 459         int err;
 460
 461         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
 462
 463         err = ib_query_port(ibdev, port_num, &attr);
 464         if (err)
 465                 return err;
 466
 467         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 468         immutable->gid_tbl_len = attr.gid_tbl_len;
 469
 470         return 0;
 471 }
 472
 473 static void get_dev_fw_str(struct ib_device *dev, char *str)
 474 {
 475         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 476                                                  ibdev);
 477         pr_debug("dev 0x%p\n", dev);
 478
 479         snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
 480                  FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
 481                  FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
 482                  FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
 483                  FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
 484 }
 485
 486 static struct net_device *get_netdev(struct ib_device *dev, u8 port)
 487 {
 488         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, ibdev);
 489         struct c4iw_rdev *rdev = &c4iw_dev->rdev;
 490         struct net_device *ndev;
 491
 492         if (!port || port > rdev->lldi.nports)
 493                 return NULL;
 494
 495         rcu_read_lock();
 496         ndev = rdev->lldi.ports[port - 1];
 497         if (ndev)
 498                 dev_hold(ndev);
 499         rcu_read_unlock();
 500
 501         return ndev;
 502 }
 503
 504 static int fill_res_entry(struct sk_buff *msg, struct rdma_restrack_entry *res)
 505 {
 506         return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&
 507                 c4iw_restrack_funcs[res->type]) ?
 508                 c4iw_restrack_funcs[res->type](msg, res) : 0;
 509 }
 510
 511 static const struct ib_device_ops c4iw_dev_ops = {
 512         .alloc_hw_stats = c4iw_alloc_stats,
 513         .alloc_mr = c4iw_alloc_mr,
 514         .alloc_mw = c4iw_alloc_mw,
 515         .alloc_pd = c4iw_allocate_pd,
 516         .alloc_ucontext = c4iw_alloc_ucontext,
 517         .create_cq = c4iw_create_cq,
 518         .create_qp = c4iw_create_qp,
 519         .create_srq = c4iw_create_srq,
 520         .dealloc_mw = c4iw_dealloc_mw,
 521         .dealloc_pd = c4iw_deallocate_pd,
 522         .dealloc_ucontext = c4iw_dealloc_ucontext,
 523         .dereg_mr = c4iw_dereg_mr,
 524         .destroy_cq = c4iw_destroy_cq,
 525         .destroy_qp = c4iw_destroy_qp,
 526         .destroy_srq = c4iw_destroy_srq,
 527         .fill_res_entry = fill_res_entry,
 528         .get_dev_fw_str = get_dev_fw_str,
 529         .get_dma_mr = c4iw_get_dma_mr,
 530         .get_hw_stats = c4iw_get_mib,
 531         .get_netdev = get_netdev,
 532         .get_port_immutable = c4iw_port_immutable,
 533         .map_mr_sg = c4iw_map_mr_sg,
 534         .mmap = c4iw_mmap,
 535         .modify_qp = c4iw_ib_modify_qp,
 536         .modify_srq = c4iw_modify_srq,
 537         .poll_cq = c4iw_poll_cq,
 538         .post_recv = c4iw_post_receive,
 539         .post_send = c4iw_post_send,
 540         .post_srq_recv = c4iw_post_srq_recv,
 541         .query_device = c4iw_query_device,
 542         .query_gid = c4iw_query_gid,
 543         .query_pkey = c4iw_query_pkey,
 544         .query_port = c4iw_query_port,
 545         .query_qp = c4iw_ib_query_qp,
 546         .reg_user_mr = c4iw_reg_user_mr,
 547         .req_notify_cq = c4iw_arm_cq,
 548         INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
 549         INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
 550 };
 551
 552 void c4iw_register_device(struct work_struct *work)
 553 {
 554         int ret;
 555         struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
 556         struct c4iw_dev *dev = ctx->dev;
 557
 558         pr_debug("c4iw_dev %p\n", dev);
 559         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 560         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 561         dev->ibdev.owner = THIS_MODULE;
 562         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 563         if (fastreg_support)
 564                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 565         dev->ibdev.local_dma_lkey = 0;
 566         dev->ibdev.uverbs_cmd_mask =
 567             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 568             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 569             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 570             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 571             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 572             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 573             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 574             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 575             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 576             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 577             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 578             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 579             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 580             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 581             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 582             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 583             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 584             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
 585             (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
 586             (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
 587             (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 588         dev->ibdev.node_type = RDMA_NODE_RNIC;
 589         BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
 590         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 591         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 592         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
 593         dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
 594         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 595
 596         dev->ibdev.iwcm = kzalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 597         if (!dev->ibdev.iwcm) {
 598                 ret = -ENOMEM;
 599                 goto err_dealloc_ctx;
 600         }
 601
 602         dev->ibdev.iwcm->connect = c4iw_connect;
 603         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 604         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 605         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 606         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 607         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 608         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 609         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 610         memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,
 611                sizeof(dev->ibdev.iwcm->ifname));
 612
 613         rdma_set_device_sysfs_group(&dev->ibdev, &c4iw_attr_group);
 614         dev->ibdev.driver_id = RDMA_DRIVER_CXGB4;
 615         ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops);
 616         ret = ib_register_device(&dev->ibdev, "cxgb4_%d");
 617         if (ret)
 618                 goto err_kfree_iwcm;
 619         return;
 620
 621 err_kfree_iwcm:
 622         kfree(dev->ibdev.iwcm);
 623 err_dealloc_ctx:
 624         pr_err("%s - Failed registering iwarp device: %d\n",
 625                pci_name(ctx->lldi.pdev), ret);
 626         c4iw_dealloc(ctx);
 627         return;
 628 }
 629
 630 void c4iw_unregister_device(struct c4iw_dev *dev)
 631 {
 632         pr_debug("c4iw_dev %p\n", dev);
 633         ib_unregister_device(&dev->ibdev);
 634         kfree(dev->ibdev.iwcm);
 635         return;
 636 }