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 void _c4iw_free_ucontext(struct kref *kref)
  62 {
  63         struct c4iw_ucontext *ucontext;
  64         struct c4iw_dev *rhp;
  65         struct c4iw_mm_entry *mm, *tmp;
  66
  67         ucontext = container_of(kref, struct c4iw_ucontext, kref);
  68         rhp = to_c4iw_dev(ucontext->ibucontext.device);
  69
  70         pr_debug("ucontext %p\n", ucontext);
  71         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
  72                 kfree(mm);
  73         c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
  74         kfree(ucontext);
  75 }
  76
  77 static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
  78 {
  79         struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
  80
  81         pr_debug("context %p\n", context);
  82         c4iw_put_ucontext(ucontext);
  83         return 0;
  84 }
  85
  86 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
  87                                                struct ib_udata *udata)
  88 {
  89         struct c4iw_ucontext *context;
  90         struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
  91         struct c4iw_alloc_ucontext_resp uresp;
  92         int ret = 0;
  93         struct c4iw_mm_entry *mm = NULL;
  94
  95         pr_debug("ibdev %p\n", ibdev);
  96         context = kzalloc(sizeof(*context), GFP_KERNEL);
  97         if (!context) {
  98                 ret = -ENOMEM;
  99                 goto err;
 100         }
 101
 102         c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
 103         INIT_LIST_HEAD(&context->mmaps);
 104         spin_lock_init(&context->mmap_lock);
 105         kref_init(&context->kref);
 106
 107         if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
 108                 pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n");
 109                 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
 110         } else {
 111                 mm = kmalloc(sizeof(*mm), GFP_KERNEL);
 112                 if (!mm) {
 113                         ret = -ENOMEM;
 114                         goto err_free;
 115                 }
 116
 117                 uresp.status_page_size = PAGE_SIZE;
 118
 119                 spin_lock(&context->mmap_lock);
 120                 uresp.status_page_key = context->key;
 121                 context->key += PAGE_SIZE;
 122                 spin_unlock(&context->mmap_lock);
 123
 124                 ret = ib_copy_to_udata(udata, &uresp,
 125                                        sizeof(uresp) - sizeof(uresp.reserved));
 126                 if (ret)
 127                         goto err_mm;
 128
 129                 mm->key = uresp.status_page_key;
 130                 mm->addr = virt_to_phys(rhp->rdev.status_page);
 131                 mm->len = PAGE_SIZE;
 132                 insert_mmap(context, mm);
 133         }
 134         return &context->ibucontext;
 135 err_mm:
 136         kfree(mm);
 137 err_free:
 138         kfree(context);
 139 err:
 140         return ERR_PTR(ret);
 141 }
 142
 143 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 144 {
 145         int len = vma->vm_end - vma->vm_start;
 146         u32 key = vma->vm_pgoff << PAGE_SHIFT;
 147         struct c4iw_rdev *rdev;
 148         int ret = 0;
 149         struct c4iw_mm_entry *mm;
 150         struct c4iw_ucontext *ucontext;
 151         u64 addr;
 152
 153         pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff,
 154                  key, len);
 155
 156         if (vma->vm_start & (PAGE_SIZE-1))
 157                 return -EINVAL;
 158
 159         rdev = &(to_c4iw_dev(context->device)->rdev);
 160         ucontext = to_c4iw_ucontext(context);
 161
 162         mm = remove_mmap(ucontext, key, len);
 163         if (!mm)
 164                 return -EINVAL;
 165         addr = mm->addr;
 166         kfree(mm);
 167
 168         if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
 169             (addr < (pci_resource_start(rdev->lldi.pdev, 0) +
 170                     pci_resource_len(rdev->lldi.pdev, 0)))) {
 171
 172                 /*
 173                  * MA_SYNC register...
 174                  */
 175                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 176                 ret = io_remap_pfn_range(vma, vma->vm_start,
 177                                          addr >> PAGE_SHIFT,
 178                                          len, vma->vm_page_prot);
 179         } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&
 180                    (addr < (pci_resource_start(rdev->lldi.pdev, 2) +
 181                     pci_resource_len(rdev->lldi.pdev, 2)))) {
 182
 183                 /*
 184                  * Map user DB or OCQP memory...
 185                  */
 186                 if (addr >= rdev->oc_mw_pa)
 187                         vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
 188                 else {
 189                         if (!is_t4(rdev->lldi.adapter_type))
 190                                 vma->vm_page_prot =
 191                                         t4_pgprot_wc(vma->vm_page_prot);
 192                         else
 193                                 vma->vm_page_prot =
 194                                         pgprot_noncached(vma->vm_page_prot);
 195                 }
 196                 ret = io_remap_pfn_range(vma, vma->vm_start,
 197                                          addr >> PAGE_SHIFT,
 198                                          len, vma->vm_page_prot);
 199         } else {
 200
 201                 /*
 202                  * Map WQ or CQ contig dma memory...
 203                  */
 204                 ret = remap_pfn_range(vma, vma->vm_start,
 205                                       addr >> PAGE_SHIFT,
 206                                       len, vma->vm_page_prot);
 207         }
 208
 209         return ret;
 210 }
 211
 212 static int c4iw_deallocate_pd(struct ib_pd *pd)
 213 {
 214         struct c4iw_dev *rhp;
 215         struct c4iw_pd *php;
 216
 217         php = to_c4iw_pd(pd);
 218         rhp = php->rhp;
 219         pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid);
 220         c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
 221         mutex_lock(&rhp->rdev.stats.lock);
 222         rhp->rdev.stats.pd.cur--;
 223         mutex_unlock(&rhp->rdev.stats.lock);
 224         kfree(php);
 225         return 0;
 226 }
 227
 228 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
 229                                       struct ib_ucontext *context,
 230                                       struct ib_udata *udata)
 231 {
 232         struct c4iw_pd *php;
 233         u32 pdid;
 234         struct c4iw_dev *rhp;
 235
 236         pr_debug("ibdev %p\n", ibdev);
 237         rhp = (struct c4iw_dev *) ibdev;
 238         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 239         if (!pdid)
 240                 return ERR_PTR(-EINVAL);
 241         php = kzalloc(sizeof(*php), GFP_KERNEL);
 242         if (!php) {
 243                 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
 244                 return ERR_PTR(-ENOMEM);
 245         }
 246         php->pdid = pdid;
 247         php->rhp = rhp;
 248         if (context) {
 249                 struct c4iw_alloc_pd_resp uresp = {.pdid = php->pdid};
 250
 251                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 252                         c4iw_deallocate_pd(&php->ibpd);
 253                         return ERR_PTR(-EFAULT);
 254                 }
 255         }
 256         mutex_lock(&rhp->rdev.stats.lock);
 257         rhp->rdev.stats.pd.cur++;
 258         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 259                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 260         mutex_unlock(&rhp->rdev.stats.lock);
 261         pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php);
 262         return &php->ibpd;
 263 }
 264
 265 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 266                            u16 *pkey)
 267 {
 268         pr_debug("ibdev %p\n", ibdev);
 269         *pkey = 0;
 270         return 0;
 271 }
 272
 273 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 274                           union ib_gid *gid)
 275 {
 276         struct c4iw_dev *dev;
 277
 278         pr_debug("ibdev %p, port %d, index %d, gid %p\n",
 279                  ibdev, port, index, gid);
 280         if (!port)
 281                 return -EINVAL;
 282         dev = to_c4iw_dev(ibdev);
 283         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 284         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 285         return 0;
 286 }
 287
 288 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 289                              struct ib_udata *uhw)
 290 {
 291
 292         struct c4iw_dev *dev;
 293
 294         pr_debug("ibdev %p\n", ibdev);
 295
 296         if (uhw->inlen || uhw->outlen)
 297                 return -EINVAL;
 298
 299         dev = to_c4iw_dev(ibdev);
 300         memset(props, 0, sizeof *props);
 301         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 302         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 303         props->fw_ver = dev->rdev.lldi.fw_vers;
 304         props->device_cap_flags = dev->device_cap_flags;
 305         props->page_size_cap = T4_PAGESIZE_MASK;
 306         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 307         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 308         props->max_mr_size = T4_MAX_MR_SIZE;
 309         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
 310         props->max_srq = dev->rdev.lldi.vr->srq.size;
 311         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 312         props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 313         props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
 314         props->max_recv_sge = T4_MAX_RECV_SGE;
 315         props->max_srq_sge = T4_MAX_RECV_SGE;
 316         props->max_sge_rd = 1;
 317         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
 318         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
 319                                     c4iw_max_read_depth);
 320         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 321         props->max_cq = dev->rdev.lldi.vr->qp.size;
 322         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
 323         props->max_mr = c4iw_num_stags(&dev->rdev);
 324         props->max_pd = T4_MAX_NUM_PD;
 325         props->local_ca_ack_delay = 0;
 326         props->max_fast_reg_page_list_len =
 327                 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
 328
 329         return 0;
 330 }
 331
 332 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 333                            struct ib_port_attr *props)
 334 {
 335         struct c4iw_dev *dev;
 336         struct net_device *netdev;
 337         struct in_device *inetdev;
 338
 339         pr_debug("ibdev %p\n", ibdev);
 340
 341         dev = to_c4iw_dev(ibdev);
 342         netdev = dev->rdev.lldi.ports[port-1];
 343         /* props being zeroed by the caller, avoid zeroing it here */
 344         props->max_mtu = IB_MTU_4096;
 345         props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
 346
 347         if (!netif_carrier_ok(netdev))
 348                 props->state = IB_PORT_DOWN;
 349         else {
 350                 inetdev = in_dev_get(netdev);
 351                 if (inetdev) {
 352                         if (inetdev->ifa_list)
 353                                 props->state = IB_PORT_ACTIVE;
 354                         else
 355                                 props->state = IB_PORT_INIT;
 356                         in_dev_put(inetdev);
 357                 } else
 358                         props->state = IB_PORT_INIT;
 359         }
 360
 361         props->port_cap_flags =
 362             IB_PORT_CM_SUP |
 363             IB_PORT_SNMP_TUNNEL_SUP |
 364             IB_PORT_REINIT_SUP |
 365             IB_PORT_DEVICE_MGMT_SUP |
 366             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 367         props->gid_tbl_len = 1;
 368         props->pkey_tbl_len = 1;
 369         props->active_width = 2;
 370         props->active_speed = IB_SPEED_DDR;
 371         props->max_msg_sz = -1;
 372
 373         return 0;
 374 }
 375
 376 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
 377                         char *buf)
 378 {
 379         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 380                                                  ibdev.dev);
 381         pr_debug("dev 0x%p\n", dev);
 382         return sprintf(buf, "%d\n",
 383                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 384 }
 385
 386 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
 387                         char *buf)
 388 {
 389         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 390                                                  ibdev.dev);
 391         struct ethtool_drvinfo info;
 392         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 393
 394         pr_debug("dev 0x%p\n", dev);
 395         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 396         return sprintf(buf, "%s\n", info.driver);
 397 }
 398
 399 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
 400                           char *buf)
 401 {
 402         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 403                                                  ibdev.dev);
 404         pr_debug("dev 0x%p\n", dev);
 405         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 406                        c4iw_dev->rdev.lldi.pdev->device);
 407 }
 408
 409 enum counters {
 410         IP4INSEGS,
 411         IP4OUTSEGS,
 412         IP4RETRANSSEGS,
 413         IP4OUTRSTS,
 414         IP6INSEGS,
 415         IP6OUTSEGS,
 416         IP6RETRANSSEGS,
 417         IP6OUTRSTS,
 418         NR_COUNTERS
 419 };
 420
 421 static const char * const names[] = {
 422         [IP4INSEGS] = "ip4InSegs",
 423         [IP4OUTSEGS] = "ip4OutSegs",
 424         [IP4RETRANSSEGS] = "ip4RetransSegs",
 425         [IP4OUTRSTS] = "ip4OutRsts",
 426         [IP6INSEGS] = "ip6InSegs",
 427         [IP6OUTSEGS] = "ip6OutSegs",
 428         [IP6RETRANSSEGS] = "ip6RetransSegs",
 429         [IP6OUTRSTS] = "ip6OutRsts"
 430 };
 431
 432 static struct rdma_hw_stats *c4iw_alloc_stats(struct ib_device *ibdev,
 433                                               u8 port_num)
 434 {
 435         BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
 436
 437         if (port_num != 0)
 438                 return NULL;
 439
 440         return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
 441                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
 442 }
 443
 444 static int c4iw_get_mib(struct ib_device *ibdev,
 445                         struct rdma_hw_stats *stats,
 446                         u8 port, int index)
 447 {
 448         struct tp_tcp_stats v4, v6;
 449         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 450
 451         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 452         stats->value[IP4INSEGS] = v4.tcp_in_segs;
 453         stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
 454         stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
 455         stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
 456         stats->value[IP6INSEGS] = v6.tcp_in_segs;
 457         stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
 458         stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
 459         stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
 460
 461         return stats->num_counters;
 462 }
 463
 464 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 465 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 466 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
 467
 468 static struct device_attribute *c4iw_class_attributes[] = {
 469         &dev_attr_hw_rev,
 470         &dev_attr_hca_type,
 471         &dev_attr_board_id,
 472 };
 473
 474 static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
 475                                struct ib_port_immutable *immutable)
 476 {
 477         struct ib_port_attr attr;
 478         int err;
 479
 480         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
 481
 482         err = ib_query_port(ibdev, port_num, &attr);
 483         if (err)
 484                 return err;
 485
 486         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 487         immutable->gid_tbl_len = attr.gid_tbl_len;
 488
 489         return 0;
 490 }
 491
 492 static void get_dev_fw_str(struct ib_device *dev, char *str)
 493 {
 494         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 495                                                  ibdev);
 496         pr_debug("dev 0x%p\n", dev);
 497
 498         snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
 499                  FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
 500                  FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
 501                  FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
 502                  FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
 503 }
 504
 505 static struct net_device *get_netdev(struct ib_device *dev, u8 port)
 506 {
 507         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, ibdev);
 508         struct c4iw_rdev *rdev = &c4iw_dev->rdev;
 509         struct net_device *ndev;
 510
 511         if (!port || port > rdev->lldi.nports)
 512                 return NULL;
 513
 514         rcu_read_lock();
 515         ndev = rdev->lldi.ports[port - 1];
 516         if (ndev)
 517                 dev_hold(ndev);
 518         rcu_read_unlock();
 519
 520         return ndev;
 521 }
 522
 523 static int fill_res_entry(struct sk_buff *msg, struct rdma_restrack_entry *res)
 524 {
 525         return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&
 526                 c4iw_restrack_funcs[res->type]) ?
 527                 c4iw_restrack_funcs[res->type](msg, res) : 0;
 528 }
 529
 530 void c4iw_register_device(struct work_struct *work)
 531 {
 532         int ret;
 533         int i;
 534         struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
 535         struct c4iw_dev *dev = ctx->dev;
 536
 537         pr_debug("c4iw_dev %p\n", dev);
 538         strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
 539         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 540         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 541         dev->ibdev.owner = THIS_MODULE;
 542         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 543         if (fastreg_support)
 544                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 545         dev->ibdev.local_dma_lkey = 0;
 546         dev->ibdev.uverbs_cmd_mask =
 547             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 548             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 549             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 550             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 551             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 552             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 553             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 554             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 555             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 556             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 557             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 558             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 559             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 560             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 561             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 562             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 563             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 564             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
 565             (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
 566             (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
 567             (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 568         dev->ibdev.node_type = RDMA_NODE_RNIC;
 569         BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
 570         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 571         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 572         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
 573         dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
 574         dev->ibdev.query_device = c4iw_query_device;
 575         dev->ibdev.query_port = c4iw_query_port;
 576         dev->ibdev.query_pkey = c4iw_query_pkey;
 577         dev->ibdev.query_gid = c4iw_query_gid;
 578         dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext;
 579         dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext;
 580         dev->ibdev.mmap = c4iw_mmap;
 581         dev->ibdev.alloc_pd = c4iw_allocate_pd;
 582         dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
 583         dev->ibdev.create_qp = c4iw_create_qp;
 584         dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 585         dev->ibdev.query_qp = c4iw_ib_query_qp;
 586         dev->ibdev.destroy_qp = c4iw_destroy_qp;
 587         dev->ibdev.create_srq = c4iw_create_srq;
 588         dev->ibdev.modify_srq = c4iw_modify_srq;
 589         dev->ibdev.destroy_srq = c4iw_destroy_srq;
 590         dev->ibdev.create_cq = c4iw_create_cq;
 591         dev->ibdev.destroy_cq = c4iw_destroy_cq;
 592         dev->ibdev.poll_cq = c4iw_poll_cq;
 593         dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 594         dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
 595         dev->ibdev.dereg_mr = c4iw_dereg_mr;
 596         dev->ibdev.alloc_mw = c4iw_alloc_mw;
 597         dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
 598         dev->ibdev.alloc_mr = c4iw_alloc_mr;
 599         dev->ibdev.map_mr_sg = c4iw_map_mr_sg;
 600         dev->ibdev.req_notify_cq = c4iw_arm_cq;
 601         dev->ibdev.post_send = c4iw_post_send;
 602         dev->ibdev.post_recv = c4iw_post_receive;
 603         dev->ibdev.post_srq_recv = c4iw_post_srq_recv;
 604         dev->ibdev.alloc_hw_stats = c4iw_alloc_stats;
 605         dev->ibdev.get_hw_stats = c4iw_get_mib;
 606         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 607         dev->ibdev.get_port_immutable = c4iw_port_immutable;
 608         dev->ibdev.get_dev_fw_str = get_dev_fw_str;
 609         dev->ibdev.get_netdev = get_netdev;
 610
 611         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 612         if (!dev->ibdev.iwcm) {
 613                 ret = -ENOMEM;
 614                 goto err_dealloc_ctx;
 615         }
 616
 617         dev->ibdev.iwcm->connect = c4iw_connect;
 618         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 619         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 620         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 621         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 622         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 623         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 624         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 625         dev->ibdev.res.fill_res_entry = fill_res_entry;
 626         memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,
 627                sizeof(dev->ibdev.iwcm->ifname));
 628
 629         dev->ibdev.driver_id = RDMA_DRIVER_CXGB4;
 630         ret = ib_register_device(&dev->ibdev, NULL);
 631         if (ret)
 632                 goto err_kfree_iwcm;
 633
 634         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) {
 635                 ret = device_create_file(&dev->ibdev.dev,
 636                                          c4iw_class_attributes[i]);
 637                 if (ret)
 638                         goto err_unregister_device;
 639         }
 640         return;
 641 err_unregister_device:
 642         ib_unregister_device(&dev->ibdev);
 643 err_kfree_iwcm:
 644         kfree(dev->ibdev.iwcm);
 645 err_dealloc_ctx:
 646         pr_err("%s - Failed registering iwarp device: %d\n",
 647                pci_name(ctx->lldi.pdev), ret);
 648         c4iw_dealloc(ctx);
 649         return;
 650 }
 651
 652 void c4iw_unregister_device(struct c4iw_dev *dev)
 653 {
 654         int i;
 655
 656         pr_debug("c4iw_dev %p\n", dev);
 657         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i)
 658                 device_remove_file(&dev->ibdev.dev,
 659                                    c4iw_class_attributes[i]);
 660         ib_unregister_device(&dev->ibdev);
 661         kfree(dev->ibdev.iwcm);
 662         return;
 663 }