Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux-2.6-microblaze.git] / 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 int 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         return 0;
206 }
207
208 static int c4iw_allocate_pd(struct ib_pd *pd, 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 (udata) {
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, udata);
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_gid(struct ib_device *ibdev, u32 port, int index,
241                           union ib_gid *gid)
242 {
243         struct c4iw_dev *dev;
244
245         pr_debug("ibdev %p, port %u, index %d, gid %p\n",
246                  ibdev, port, index, gid);
247         if (!port)
248                 return -EINVAL;
249         dev = to_c4iw_dev(ibdev);
250         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
251         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
252         return 0;
253 }
254
255 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
256                              struct ib_udata *uhw)
257 {
258
259         struct c4iw_dev *dev;
260
261         pr_debug("ibdev %p\n", ibdev);
262
263         if (uhw->inlen || uhw->outlen)
264                 return -EINVAL;
265
266         dev = to_c4iw_dev(ibdev);
267         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
268         props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
269         props->fw_ver = dev->rdev.lldi.fw_vers;
270         props->device_cap_flags = dev->device_cap_flags;
271         props->page_size_cap = T4_PAGESIZE_MASK;
272         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
273         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
274         props->max_mr_size = T4_MAX_MR_SIZE;
275         props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
276         props->max_srq = dev->rdev.lldi.vr->srq.size;
277         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
278         props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
279         props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
280         props->max_recv_sge = T4_MAX_RECV_SGE;
281         props->max_srq_sge = T4_MAX_RECV_SGE;
282         props->max_sge_rd = 1;
283         props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
284         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
285                                     c4iw_max_read_depth);
286         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
287         props->max_cq = dev->rdev.lldi.vr->qp.size;
288         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
289         props->max_mr = c4iw_num_stags(&dev->rdev);
290         props->max_pd = T4_MAX_NUM_PD;
291         props->local_ca_ack_delay = 0;
292         props->max_fast_reg_page_list_len =
293                 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
294
295         return 0;
296 }
297
298 static int c4iw_query_port(struct ib_device *ibdev, u32 port,
299                            struct ib_port_attr *props)
300 {
301         int ret = 0;
302         pr_debug("ibdev %p\n", ibdev);
303         ret = ib_get_eth_speed(ibdev, port, &props->active_speed,
304                                &props->active_width);
305
306         props->port_cap_flags =
307             IB_PORT_CM_SUP |
308             IB_PORT_SNMP_TUNNEL_SUP |
309             IB_PORT_REINIT_SUP |
310             IB_PORT_DEVICE_MGMT_SUP |
311             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
312         props->gid_tbl_len = 1;
313         props->max_msg_sz = -1;
314
315         return ret;
316 }
317
318 static ssize_t hw_rev_show(struct device *dev,
319                            struct device_attribute *attr, char *buf)
320 {
321         struct c4iw_dev *c4iw_dev =
322                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
323
324         pr_debug("dev 0x%p\n", dev);
325         return sysfs_emit(
326                 buf, "%d\n",
327                 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
328 }
329 static DEVICE_ATTR_RO(hw_rev);
330
331 static ssize_t hca_type_show(struct device *dev,
332                              struct device_attribute *attr, char *buf)
333 {
334         struct c4iw_dev *c4iw_dev =
335                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
336         struct ethtool_drvinfo info;
337         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
338
339         pr_debug("dev 0x%p\n", dev);
340         lldev->ethtool_ops->get_drvinfo(lldev, &info);
341         return sysfs_emit(buf, "%s\n", info.driver);
342 }
343 static DEVICE_ATTR_RO(hca_type);
344
345 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
346                              char *buf)
347 {
348         struct c4iw_dev *c4iw_dev =
349                         rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
350
351         pr_debug("dev 0x%p\n", dev);
352         return sysfs_emit(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
353                           c4iw_dev->rdev.lldi.pdev->device);
354 }
355 static DEVICE_ATTR_RO(board_id);
356
357 enum counters {
358         IP4INSEGS,
359         IP4OUTSEGS,
360         IP4RETRANSSEGS,
361         IP4OUTRSTS,
362         IP6INSEGS,
363         IP6OUTSEGS,
364         IP6RETRANSSEGS,
365         IP6OUTRSTS,
366         NR_COUNTERS
367 };
368
369 static const char * const names[] = {
370         [IP4INSEGS] = "ip4InSegs",
371         [IP4OUTSEGS] = "ip4OutSegs",
372         [IP4RETRANSSEGS] = "ip4RetransSegs",
373         [IP4OUTRSTS] = "ip4OutRsts",
374         [IP6INSEGS] = "ip6InSegs",
375         [IP6OUTSEGS] = "ip6OutSegs",
376         [IP6RETRANSSEGS] = "ip6RetransSegs",
377         [IP6OUTRSTS] = "ip6OutRsts"
378 };
379
380 static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev)
381 {
382         BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
383
384         /* FIXME: these look like port stats */
385         return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
386                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
387 }
388
389 static int c4iw_get_mib(struct ib_device *ibdev,
390                         struct rdma_hw_stats *stats,
391                         u32 port, int index)
392 {
393         struct tp_tcp_stats v4, v6;
394         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
395
396         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
397         stats->value[IP4INSEGS] = v4.tcp_in_segs;
398         stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
399         stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
400         stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
401         stats->value[IP6INSEGS] = v6.tcp_in_segs;
402         stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
403         stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
404         stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
405
406         return stats->num_counters;
407 }
408
409 static struct attribute *c4iw_class_attributes[] = {
410         &dev_attr_hw_rev.attr,
411         &dev_attr_hca_type.attr,
412         &dev_attr_board_id.attr,
413         NULL
414 };
415
416 static const struct attribute_group c4iw_attr_group = {
417         .attrs = c4iw_class_attributes,
418 };
419
420 static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num,
421                                struct ib_port_immutable *immutable)
422 {
423         struct ib_port_attr attr;
424         int err;
425
426         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
427
428         err = ib_query_port(ibdev, port_num, &attr);
429         if (err)
430                 return err;
431
432         immutable->gid_tbl_len = attr.gid_tbl_len;
433
434         return 0;
435 }
436
437 static void get_dev_fw_str(struct ib_device *dev, char *str)
438 {
439         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
440                                                  ibdev);
441         pr_debug("dev 0x%p\n", dev);
442
443         snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
444                  FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
445                  FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
446                  FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
447                  FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
448 }
449
450 static const struct ib_device_ops c4iw_dev_ops = {
451         .owner = THIS_MODULE,
452         .driver_id = RDMA_DRIVER_CXGB4,
453         .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION,
454
455         .alloc_hw_device_stats = c4iw_alloc_device_stats,
456         .alloc_mr = c4iw_alloc_mr,
457         .alloc_pd = c4iw_allocate_pd,
458         .alloc_ucontext = c4iw_alloc_ucontext,
459         .create_cq = c4iw_create_cq,
460         .create_qp = c4iw_create_qp,
461         .create_srq = c4iw_create_srq,
462         .dealloc_pd = c4iw_deallocate_pd,
463         .dealloc_ucontext = c4iw_dealloc_ucontext,
464         .dereg_mr = c4iw_dereg_mr,
465         .destroy_cq = c4iw_destroy_cq,
466         .destroy_qp = c4iw_destroy_qp,
467         .destroy_srq = c4iw_destroy_srq,
468         .device_group = &c4iw_attr_group,
469         .fill_res_cq_entry = c4iw_fill_res_cq_entry,
470         .fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry,
471         .fill_res_mr_entry = c4iw_fill_res_mr_entry,
472         .get_dev_fw_str = get_dev_fw_str,
473         .get_dma_mr = c4iw_get_dma_mr,
474         .get_hw_stats = c4iw_get_mib,
475         .get_port_immutable = c4iw_port_immutable,
476         .iw_accept = c4iw_accept_cr,
477         .iw_add_ref = c4iw_qp_add_ref,
478         .iw_connect = c4iw_connect,
479         .iw_create_listen = c4iw_create_listen,
480         .iw_destroy_listen = c4iw_destroy_listen,
481         .iw_get_qp = c4iw_get_qp,
482         .iw_reject = c4iw_reject_cr,
483         .iw_rem_ref = c4iw_qp_rem_ref,
484         .map_mr_sg = c4iw_map_mr_sg,
485         .mmap = c4iw_mmap,
486         .modify_qp = c4iw_ib_modify_qp,
487         .modify_srq = c4iw_modify_srq,
488         .poll_cq = c4iw_poll_cq,
489         .post_recv = c4iw_post_receive,
490         .post_send = c4iw_post_send,
491         .post_srq_recv = c4iw_post_srq_recv,
492         .query_device = c4iw_query_device,
493         .query_gid = c4iw_query_gid,
494         .query_port = c4iw_query_port,
495         .query_qp = c4iw_ib_query_qp,
496         .reg_user_mr = c4iw_reg_user_mr,
497         .req_notify_cq = c4iw_arm_cq,
498
499         INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
500         INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw),
501         INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
502         INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
503         INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
504 };
505
506 static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev)
507 {
508         int ret;
509         int i;
510
511         for (i = 0; i < rdev->lldi.nports; i++) {
512                 ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i],
513                                            i + 1);
514                 if (ret)
515                         return ret;
516         }
517         return 0;
518 }
519
520 void c4iw_register_device(struct work_struct *work)
521 {
522         int ret;
523         struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
524         struct c4iw_dev *dev = ctx->dev;
525
526         pr_debug("c4iw_dev %p\n", dev);
527         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
528         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
529         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
530         if (fastreg_support)
531                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
532         dev->ibdev.local_dma_lkey = 0;
533         dev->ibdev.node_type = RDMA_NODE_RNIC;
534         BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
535         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
536         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
537         dev->ibdev.num_comp_vectors =  dev->rdev.lldi.nciq;
538         dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
539
540         memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name,
541                sizeof(dev->ibdev.iw_ifname));
542
543         ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops);
544         ret = set_netdevs(&dev->ibdev, &dev->rdev);
545         if (ret)
546                 goto err_dealloc_ctx;
547         dma_set_max_seg_size(&dev->rdev.lldi.pdev->dev, UINT_MAX);
548         ret = ib_register_device(&dev->ibdev, "cxgb4_%d",
549                                  &dev->rdev.lldi.pdev->dev);
550         if (ret)
551                 goto err_dealloc_ctx;
552         return;
553
554 err_dealloc_ctx:
555         pr_err("%s - Failed registering iwarp device: %d\n",
556                pci_name(ctx->lldi.pdev), ret);
557         c4iw_dealloc(ctx);
558         return;
559 }
560
561 void c4iw_unregister_device(struct c4iw_dev *dev)
562 {
563         pr_debug("c4iw_dev %p\n", dev);
564         ib_unregister_device(&dev->ibdev);
565         return;
566 }