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, struct ib_udata *udata)
 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_udata *udata)
 208 {
 209         struct c4iw_pd *php = to_c4iw_pd(pd);
 210         struct ib_device *ibdev = pd->device;
 211         u32 pdid;
 212         struct c4iw_dev *rhp;
 213
 214         pr_debug("ibdev %p\n", ibdev);
 215         rhp = (struct c4iw_dev *) ibdev;
 216         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_table);
 217         if (!pdid)
 218                 return -EINVAL;
 219
 220         php->pdid = pdid;
 221         php->rhp = rhp;
 222         if (udata) {
 223                 struct c4iw_alloc_pd_resp uresp = {.pdid = php->pdid};
 224
 225                 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
 226                         c4iw_deallocate_pd(&php->ibpd, udata);
 227                         return -EFAULT;
 228                 }
 229         }
 230         mutex_lock(&rhp->rdev.stats.lock);
 231         rhp->rdev.stats.pd.cur++;
 232         if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
 233                 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
 234         mutex_unlock(&rhp->rdev.stats.lock);
 235         pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php);
 236         return 0;
 237 }
 238
 239 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 240                            u16 *pkey)
 241 {
 242         pr_debug("ibdev %p\n", ibdev);
 243         *pkey = 0;
 244         return 0;
 245 }
 246
 247 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 248                           union ib_gid *gid)
 249 {
 250         struct c4iw_dev *dev;
 251
 252         pr_debug("ibdev %p, port %d, index %d, gid %p\n",
 253                  ibdev, port, index, gid);
 254         if (!port)
 255                 return -EINVAL;
 256         dev = to_c4iw_dev(ibdev);
 257         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 258         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 259         return 0;
 260 }
 261
 262 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 263                              struct ib_udata *uhw)
 264 {
 265
 266         struct c4iw_dev *dev;
 267
 268         pr_debug("ibdev %p\n", ibdev);
 269
 270         if (uhw->inlen || uhw->outlen)
 271                 return -EINVAL;
 272
 273         dev = to_c4iw_dev(ibdev);
 274         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 275         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
 276         props->fw_ver = dev->rdev.lldi.fw_vers;
 277         props->device_cap_flags = dev->device_cap_flags;
 278         props->page_size_cap = T4_PAGESIZE_MASK;
 279         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 280         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 281         props->max_mr_size = T4_MAX_MR_SIZE;
 282         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
 283         props->max_srq = dev->rdev.lldi.vr->srq.size;
 284         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 285         props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
 286         props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
 287         props->max_recv_sge = T4_MAX_RECV_SGE;
 288         props->max_srq_sge = T4_MAX_RECV_SGE;
 289         props->max_sge_rd = 1;
 290         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
 291         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
 292                                     c4iw_max_read_depth);
 293         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 294         props->max_cq = dev->rdev.lldi.vr->qp.size;
 295         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
 296         props->max_mr = c4iw_num_stags(&dev->rdev);
 297         props->max_pd = T4_MAX_NUM_PD;
 298         props->local_ca_ack_delay = 0;
 299         props->max_fast_reg_page_list_len =
 300                 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
 301
 302         return 0;
 303 }
 304
 305 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 306                            struct ib_port_attr *props)
 307 {
 308         int ret = 0;
 309         pr_debug("ibdev %p\n", ibdev);
 310         ret = ib_get_eth_speed(ibdev, port, &props->active_speed,
 311                                &props->active_width);
 312
 313         props->port_cap_flags =
 314             IB_PORT_CM_SUP |
 315             IB_PORT_SNMP_TUNNEL_SUP |
 316             IB_PORT_REINIT_SUP |
 317             IB_PORT_DEVICE_MGMT_SUP |
 318             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 319         props->gid_tbl_len = 1;
 320         props->pkey_tbl_len = 1;
 321         props->max_msg_sz = -1;
 322
 323         return ret;
 324 }
 325
 326 static ssize_t hw_rev_show(struct device *dev,
 327                            struct device_attribute *attr, char *buf)
 328 {
 329         struct c4iw_dev *c4iw_dev =
 330                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 331
 332         pr_debug("dev 0x%p\n", dev);
 333         return sprintf(buf, "%d\n",
 334                        CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
 335 }
 336 static DEVICE_ATTR_RO(hw_rev);
 337
 338 static ssize_t hca_type_show(struct device *dev,
 339                              struct device_attribute *attr, char *buf)
 340 {
 341         struct c4iw_dev *c4iw_dev =
 342                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 343         struct ethtool_drvinfo info;
 344         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 345
 346         pr_debug("dev 0x%p\n", dev);
 347         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 348         return sprintf(buf, "%s\n", info.driver);
 349 }
 350 static DEVICE_ATTR_RO(hca_type);
 351
 352 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
 353                              char *buf)
 354 {
 355         struct c4iw_dev *c4iw_dev =
 356                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
 357
 358         pr_debug("dev 0x%p\n", dev);
 359         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 360                        c4iw_dev->rdev.lldi.pdev->device);
 361 }
 362 static DEVICE_ATTR_RO(board_id);
 363
 364 enum counters {
 365         IP4INSEGS,
 366         IP4OUTSEGS,
 367         IP4RETRANSSEGS,
 368         IP4OUTRSTS,
 369         IP6INSEGS,
 370         IP6OUTSEGS,
 371         IP6RETRANSSEGS,
 372         IP6OUTRSTS,
 373         NR_COUNTERS
 374 };
 375
 376 static const char * const names[] = {
 377         [IP4INSEGS] = "ip4InSegs",
 378         [IP4OUTSEGS] = "ip4OutSegs",
 379         [IP4RETRANSSEGS] = "ip4RetransSegs",
 380         [IP4OUTRSTS] = "ip4OutRsts",
 381         [IP6INSEGS] = "ip6InSegs",
 382         [IP6OUTSEGS] = "ip6OutSegs",
 383         [IP6RETRANSSEGS] = "ip6RetransSegs",
 384         [IP6OUTRSTS] = "ip6OutRsts"
 385 };
 386
 387 static struct rdma_hw_stats *c4iw_alloc_stats(struct ib_device *ibdev,
 388                                               u8 port_num)
 389 {
 390         BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
 391
 392         if (port_num != 0)
 393                 return NULL;
 394
 395         return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
 396                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
 397 }
 398
 399 static int c4iw_get_mib(struct ib_device *ibdev,
 400                         struct rdma_hw_stats *stats,
 401                         u8 port, int index)
 402 {
 403         struct tp_tcp_stats v4, v6;
 404         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 405
 406         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 407         stats->value[IP4INSEGS] = v4.tcp_in_segs;
 408         stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
 409         stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
 410         stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
 411         stats->value[IP6INSEGS] = v6.tcp_in_segs;
 412         stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
 413         stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
 414         stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
 415
 416         return stats->num_counters;
 417 }
 418
 419 static struct attribute *c4iw_class_attributes[] = {
 420         &dev_attr_hw_rev.attr,
 421         &dev_attr_hca_type.attr,
 422         &dev_attr_board_id.attr,
 423         NULL
 424 };
 425
 426 static const struct attribute_group c4iw_attr_group = {
 427         .attrs = c4iw_class_attributes,
 428 };
 429
 430 static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
 431                                struct ib_port_immutable *immutable)
 432 {
 433         struct ib_port_attr attr;
 434         int err;
 435
 436         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
 437
 438         err = ib_query_port(ibdev, port_num, &attr);
 439         if (err)
 440                 return err;
 441
 442         immutable->pkey_tbl_len = attr.pkey_tbl_len;
 443         immutable->gid_tbl_len = attr.gid_tbl_len;
 444
 445         return 0;
 446 }
 447
 448 static void get_dev_fw_str(struct ib_device *dev, char *str)
 449 {
 450         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 451                                                  ibdev);
 452         pr_debug("dev 0x%p\n", dev);
 453
 454         snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
 455                  FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
 456                  FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
 457                  FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
 458                  FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
 459 }
 460
 461 static int fill_res_entry(struct sk_buff *msg, struct rdma_restrack_entry *res)
 462 {
 463         return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&
 464                 c4iw_restrack_funcs[res->type]) ?
 465                 c4iw_restrack_funcs[res->type](msg, res) : 0;
 466 }
 467
 468 static const struct ib_device_ops c4iw_dev_ops = {
 469         .owner = THIS_MODULE,
 470         .driver_id = RDMA_DRIVER_CXGB4,
 471         .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION,
 472
 473         .alloc_hw_stats = c4iw_alloc_stats,
 474         .alloc_mr = c4iw_alloc_mr,
 475         .alloc_mw = c4iw_alloc_mw,
 476         .alloc_pd = c4iw_allocate_pd,
 477         .alloc_ucontext = c4iw_alloc_ucontext,
 478         .create_cq = c4iw_create_cq,
 479         .create_qp = c4iw_create_qp,
 480         .create_srq = c4iw_create_srq,
 481         .dealloc_mw = c4iw_dealloc_mw,
 482         .dealloc_pd = c4iw_deallocate_pd,
 483         .dealloc_ucontext = c4iw_dealloc_ucontext,
 484         .dereg_mr = c4iw_dereg_mr,
 485         .destroy_cq = c4iw_destroy_cq,
 486         .destroy_qp = c4iw_destroy_qp,
 487         .destroy_srq = c4iw_destroy_srq,
 488         .fill_res_entry = fill_res_entry,
 489         .get_dev_fw_str = get_dev_fw_str,
 490         .get_dma_mr = c4iw_get_dma_mr,
 491         .get_hw_stats = c4iw_get_mib,
 492         .get_port_immutable = c4iw_port_immutable,
 493         .iw_accept = c4iw_accept_cr,
 494         .iw_add_ref = c4iw_qp_add_ref,
 495         .iw_connect = c4iw_connect,
 496         .iw_create_listen = c4iw_create_listen,
 497         .iw_destroy_listen = c4iw_destroy_listen,
 498         .iw_get_qp = c4iw_get_qp,
 499         .iw_reject = c4iw_reject_cr,
 500         .iw_rem_ref = c4iw_qp_rem_ref,
 501         .map_mr_sg = c4iw_map_mr_sg,
 502         .mmap = c4iw_mmap,
 503         .modify_qp = c4iw_ib_modify_qp,
 504         .modify_srq = c4iw_modify_srq,
 505         .poll_cq = c4iw_poll_cq,
 506         .post_recv = c4iw_post_receive,
 507         .post_send = c4iw_post_send,
 508         .post_srq_recv = c4iw_post_srq_recv,
 509         .query_device = c4iw_query_device,
 510         .query_gid = c4iw_query_gid,
 511         .query_pkey = c4iw_query_pkey,
 512         .query_port = c4iw_query_port,
 513         .query_qp = c4iw_ib_query_qp,
 514         .reg_user_mr = c4iw_reg_user_mr,
 515         .req_notify_cq = c4iw_arm_cq,
 516         INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
 517         INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
 518         INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
 519         INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
 520 };
 521
 522 static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev)
 523 {
 524         int ret;
 525         int i;
 526
 527         for (i = 0; i < rdev->lldi.nports; i++) {
 528                 ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i],
 529                                            i + 1);
 530                 if (ret)
 531                         return ret;
 532         }
 533         return 0;
 534 }
 535
 536 void c4iw_register_device(struct work_struct *work)
 537 {
 538         int ret;
 539         struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
 540         struct c4iw_dev *dev = ctx->dev;
 541
 542         pr_debug("c4iw_dev %p\n", dev);
 543         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 544         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 545         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 546         if (fastreg_support)
 547                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 548         dev->ibdev.local_dma_lkey = 0;
 549         dev->ibdev.uverbs_cmd_mask =
 550             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 551             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 552             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 553             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 554             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 555             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 556             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 557             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 558             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 559             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 560             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 561             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 562             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 563             (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
 564             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 565             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 566             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 567             (1ull << IB_USER_VERBS_CMD_POST_RECV) |
 568             (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
 569             (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
 570             (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
 571         dev->ibdev.node_type = RDMA_NODE_RNIC;
 572         BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
 573         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 574         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 575         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
 576         dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
 577
 578         memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name,
 579                sizeof(dev->ibdev.iw_ifname));
 580
 581         rdma_set_device_sysfs_group(&dev->ibdev, &c4iw_attr_group);
 582         ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops);
 583         ret = set_netdevs(&dev->ibdev, &dev->rdev);
 584         if (ret)
 585                 goto err_dealloc_ctx;
 586         ret = ib_register_device(&dev->ibdev, "cxgb4_%d");
 587         if (ret)
 588                 goto err_dealloc_ctx;
 589         return;
 590
 591 err_dealloc_ctx:
 592         pr_err("%s - Failed registering iwarp device: %d\n",
 593                pci_name(ctx->lldi.pdev), ret);
 594         c4iw_dealloc(ctx);
 595         return;
 596 }
 597
 598 void c4iw_unregister_device(struct c4iw_dev *dev)
 599 {
 600         pr_debug("c4iw_dev %p\n", dev);
 601         ib_unregister_device(&dev->ibdev);
 602         return;
 603 }