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 <net/addrconf.h>
45#include <linux/io.h>
46
47#include <asm/irq.h>
48#include <asm/byteorder.h>
49
50#include <rdma/iw_cm.h>
51#include <rdma/ib_verbs.h>
52#include <rdma/ib_smi.h>
53#include <rdma/ib_umem.h>
54#include <rdma/ib_user_verbs.h>
55
56#include "iw_cxgb4.h"
57
58static int fastreg_support = 1;
59module_param(fastreg_support, int, 0644);
60MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)");
61
62static void c4iw_dealloc_ucontext(struct ib_ucontext *context)
63{
64 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(c: context);
65 struct c4iw_dev *rhp;
66 struct c4iw_mm_entry *mm, *tmp;
67
68 pr_debug("context %p\n", context);
69 rhp = to_c4iw_dev(ibdev: ucontext->ibucontext.device);
70
71 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
72 kfree(objp: mm);
73 c4iw_release_dev_ucontext(rdev: &rhp->rdev, uctx: &ucontext->uctx);
74}
75
76static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext,
77 struct ib_udata *udata)
78{
79 struct ib_device *ibdev = ucontext->device;
80 struct c4iw_ucontext *context = to_c4iw_ucontext(c: ucontext);
81 struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
82 struct c4iw_alloc_ucontext_resp uresp;
83 int ret = 0;
84 struct c4iw_mm_entry *mm = NULL;
85
86 pr_debug("ibdev %p\n", ibdev);
87 c4iw_init_dev_ucontext(rdev: &rhp->rdev, uctx: &context->uctx);
88 INIT_LIST_HEAD(list: &context->mmaps);
89 spin_lock_init(&context->mmap_lock);
90
91 if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
92 pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n");
93 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
94 } else {
95 mm = kmalloc(sizeof(*mm), GFP_KERNEL);
96 if (!mm) {
97 ret = -ENOMEM;
98 goto err;
99 }
100
101 uresp.status_page_size = PAGE_SIZE;
102
103 spin_lock(lock: &context->mmap_lock);
104 uresp.status_page_key = context->key;
105 context->key += PAGE_SIZE;
106 spin_unlock(lock: &context->mmap_lock);
107
108 ret = ib_copy_to_udata(udata, src: &uresp,
109 len: sizeof(uresp) - sizeof(uresp.reserved));
110 if (ret)
111 goto err_mm;
112
113 mm->key = uresp.status_page_key;
114 mm->addr = virt_to_phys(address: rhp->rdev.status_page);
115 mm->len = PAGE_SIZE;
116 mm->vaddr = NULL;
117 mm->dma_addr = 0;
118 insert_flag_to_mmap(rdev: &rhp->rdev, mm, addr: mm->addr);
119 insert_mmap(ucontext: context, mm);
120 }
121 return 0;
122err_mm:
123 kfree(objp: mm);
124err:
125 return ret;
126}
127
128static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
129{
130 int len = vma->vm_end - vma->vm_start;
131 u32 key = vma->vm_pgoff << PAGE_SHIFT;
132 struct c4iw_rdev *rdev;
133 int ret = 0;
134 struct c4iw_mm_entry *mm;
135 struct c4iw_ucontext *ucontext;
136 u64 addr;
137 u8 mmap_flag;
138 size_t size;
139 void *vaddr;
140 unsigned long vm_pgoff;
141 dma_addr_t dma_addr;
142
143 pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff,
144 key, len);
145
146 if (vma->vm_start & (PAGE_SIZE-1))
147 return -EINVAL;
148
149 rdev = &(to_c4iw_dev(ibdev: context->device)->rdev);
150 ucontext = to_c4iw_ucontext(c: context);
151
152 mm = remove_mmap(ucontext, key, len);
153 if (!mm)
154 return -EINVAL;
155 addr = mm->addr;
156 vaddr = mm->vaddr;
157 dma_addr = mm->dma_addr;
158 size = mm->len;
159 mmap_flag = mm->mmap_flag;
160 kfree(objp: mm);
161
162 switch (mmap_flag) {
163 case CXGB4_MMAP_BAR:
164 ret = io_remap_pfn_range(vma, addr: vma->vm_start, orig_pfn: addr >> PAGE_SHIFT,
165 size: len,
166 pgprot_noncached(vma->vm_page_prot));
167 break;
168 case CXGB4_MMAP_BAR_WC:
169 ret = io_remap_pfn_range(vma, addr: vma->vm_start,
170 orig_pfn: addr >> PAGE_SHIFT,
171 size: len, orig_prot: t4_pgprot_wc(prot: vma->vm_page_prot));
172 break;
173 case CXGB4_MMAP_CONTIG:
174 ret = io_remap_pfn_range(vma, addr: vma->vm_start,
175 orig_pfn: addr >> PAGE_SHIFT,
176 size: len, orig_prot: vma->vm_page_prot);
177 break;
178 case CXGB4_MMAP_NON_CONTIG:
179 vm_pgoff = vma->vm_pgoff;
180 vma->vm_pgoff = 0;
181 ret = dma_mmap_coherent(&rdev->lldi.pdev->dev, vma,
182 vaddr, dma_addr, size);
183 vma->vm_pgoff = vm_pgoff;
184 break;
185 default:
186 ret = -EINVAL;
187 break;
188 }
189
190 return ret;
191}
192
193static 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(ibpd: pd);
199 rhp = php->rhp;
200 pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid);
201 c4iw_put_resource(id_table: &rhp->rdev.resource.pdid_table, entry: php->pdid);
202 mutex_lock(&rhp->rdev.stats.lock);
203 rhp->rdev.stats.pd.cur--;
204 mutex_unlock(lock: &rhp->rdev.stats.lock);
205 return 0;
206}
207
208static int c4iw_allocate_pd(struct ib_pd *pd, struct ib_udata *udata)
209{
210 struct c4iw_pd *php = to_c4iw_pd(ibpd: 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(id_table: &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, src: &uresp, len: sizeof(uresp))) {
227 c4iw_deallocate_pd(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(lock: &rhp->rdev.stats.lock);
236 pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php);
237 return 0;
238}
239
240static 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
255static 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 addrconf_addr_eui48(eui: (u8 *)&props->sys_image_guid,
268 addr: dev->rdev.lldi.ports[0]->dev_addr);
269 props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type);
270 props->fw_ver = dev->rdev.lldi.fw_vers;
271 props->device_cap_flags = IB_DEVICE_MEM_WINDOW;
272 props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
273 if (fastreg_support)
274 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
275 props->page_size_cap = T4_PAGESIZE_MASK;
276 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
277 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
278 props->max_mr_size = T4_MAX_MR_SIZE;
279 props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
280 props->max_srq = dev->rdev.lldi.vr->srq.size;
281 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
282 props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
283 props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
284 props->max_recv_sge = T4_MAX_RECV_SGE;
285 props->max_srq_sge = T4_MAX_RECV_SGE;
286 props->max_sge_rd = 1;
287 props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
288 props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
289 c4iw_max_read_depth);
290 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
291 props->max_cq = dev->rdev.lldi.vr->qp.size;
292 props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
293 props->max_mr = c4iw_num_stags(rdev: &dev->rdev);
294 props->max_pd = T4_MAX_NUM_PD;
295 props->local_ca_ack_delay = 0;
296 props->max_fast_reg_page_list_len =
297 t4_max_fr_depth(use_dsgl: dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
298
299 return 0;
300}
301
302static int c4iw_query_port(struct ib_device *ibdev, u32 port,
303 struct ib_port_attr *props)
304{
305 int ret = 0;
306 pr_debug("ibdev %p\n", ibdev);
307 ret = ib_get_eth_speed(dev: ibdev, port_num: port, speed: &props->active_speed,
308 width: &props->active_width);
309
310 props->port_cap_flags =
311 IB_PORT_CM_SUP |
312 IB_PORT_SNMP_TUNNEL_SUP |
313 IB_PORT_REINIT_SUP |
314 IB_PORT_DEVICE_MGMT_SUP |
315 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
316 props->gid_tbl_len = 1;
317 props->max_msg_sz = -1;
318
319 return ret;
320}
321
322static ssize_t hw_rev_show(struct device *dev,
323 struct device_attribute *attr, char *buf)
324{
325 struct c4iw_dev *c4iw_dev =
326 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
327
328 pr_debug("dev 0x%p\n", dev);
329 return sysfs_emit(
330 buf, fmt: "%d\n",
331 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
332}
333static DEVICE_ATTR_RO(hw_rev);
334
335static ssize_t hca_type_show(struct device *dev,
336 struct device_attribute *attr, char *buf)
337{
338 struct c4iw_dev *c4iw_dev =
339 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
340 struct ethtool_drvinfo info;
341 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
342
343 pr_debug("dev 0x%p\n", dev);
344 lldev->ethtool_ops->get_drvinfo(lldev, &info);
345 return sysfs_emit(buf, fmt: "%s\n", info.driver);
346}
347static DEVICE_ATTR_RO(hca_type);
348
349static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
350 char *buf)
351{
352 struct c4iw_dev *c4iw_dev =
353 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
354
355 pr_debug("dev 0x%p\n", dev);
356 return sysfs_emit(buf, fmt: "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
357 c4iw_dev->rdev.lldi.pdev->device);
358}
359static DEVICE_ATTR_RO(board_id);
360
361enum counters {
362 IP4INSEGS,
363 IP4OUTSEGS,
364 IP4RETRANSSEGS,
365 IP4OUTRSTS,
366 IP6INSEGS,
367 IP6OUTSEGS,
368 IP6RETRANSSEGS,
369 IP6OUTRSTS,
370 NR_COUNTERS
371};
372
373static const struct rdma_stat_desc cxgb4_descs[] = {
374 [IP4INSEGS].name = "ip4InSegs",
375 [IP4OUTSEGS].name = "ip4OutSegs",
376 [IP4RETRANSSEGS].name = "ip4RetransSegs",
377 [IP4OUTRSTS].name = "ip4OutRsts",
378 [IP6INSEGS].name = "ip6InSegs",
379 [IP6OUTSEGS].name = "ip6OutSegs",
380 [IP6RETRANSSEGS].name = "ip6RetransSegs",
381 [IP6OUTRSTS].name = "ip6OutRsts"
382};
383
384static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev)
385{
386 BUILD_BUG_ON(ARRAY_SIZE(cxgb4_descs) != NR_COUNTERS);
387
388 /* FIXME: these look like port stats */
389 return rdma_alloc_hw_stats_struct(descs: cxgb4_descs, num_counters: NR_COUNTERS,
390 RDMA_HW_STATS_DEFAULT_LIFESPAN);
391}
392
393static int c4iw_get_mib(struct ib_device *ibdev,
394 struct rdma_hw_stats *stats,
395 u32 port, int index)
396{
397 struct tp_tcp_stats v4, v6;
398 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
399
400 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
401 stats->value[IP4INSEGS] = v4.tcp_in_segs;
402 stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
403 stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
404 stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
405 stats->value[IP6INSEGS] = v6.tcp_in_segs;
406 stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
407 stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
408 stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
409
410 return stats->num_counters;
411}
412
413static struct attribute *c4iw_class_attributes[] = {
414 &dev_attr_hw_rev.attr,
415 &dev_attr_hca_type.attr,
416 &dev_attr_board_id.attr,
417 NULL
418};
419
420static const struct attribute_group c4iw_attr_group = {
421 .attrs = c4iw_class_attributes,
422};
423
424static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num,
425 struct ib_port_immutable *immutable)
426{
427 struct ib_port_attr attr;
428 int err;
429
430 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
431
432 err = ib_query_port(device: ibdev, port_num, port_attr: &attr);
433 if (err)
434 return err;
435
436 immutable->gid_tbl_len = attr.gid_tbl_len;
437
438 return 0;
439}
440
441static void get_dev_fw_str(struct ib_device *dev, char *str)
442{
443 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
444 ibdev);
445 pr_debug("dev 0x%p\n", dev);
446
447 snprintf(buf: str, IB_FW_VERSION_NAME_MAX, fmt: "%u.%u.%u.%u",
448 FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
449 FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
450 FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
451 FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
452}
453
454static const struct ib_device_ops c4iw_dev_ops = {
455 .owner = THIS_MODULE,
456 .driver_id = RDMA_DRIVER_CXGB4,
457 .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION,
458
459 .alloc_hw_device_stats = c4iw_alloc_device_stats,
460 .alloc_mr = c4iw_alloc_mr,
461 .alloc_pd = c4iw_allocate_pd,
462 .alloc_ucontext = c4iw_alloc_ucontext,
463 .create_cq = c4iw_create_cq,
464 .create_qp = c4iw_create_qp,
465 .create_srq = c4iw_create_srq,
466 .dealloc_pd = c4iw_deallocate_pd,
467 .dealloc_ucontext = c4iw_dealloc_ucontext,
468 .dereg_mr = c4iw_dereg_mr,
469 .destroy_cq = c4iw_destroy_cq,
470 .destroy_qp = c4iw_destroy_qp,
471 .destroy_srq = c4iw_destroy_srq,
472 .device_group = &c4iw_attr_group,
473 .fill_res_cq_entry = c4iw_fill_res_cq_entry,
474 .fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry,
475 .fill_res_mr_entry = c4iw_fill_res_mr_entry,
476 .fill_res_qp_entry = c4iw_fill_res_qp_entry,
477 .get_dev_fw_str = get_dev_fw_str,
478 .get_dma_mr = c4iw_get_dma_mr,
479 .get_hw_stats = c4iw_get_mib,
480 .get_port_immutable = c4iw_port_immutable,
481 .iw_accept = c4iw_accept_cr,
482 .iw_add_ref = c4iw_qp_add_ref,
483 .iw_connect = c4iw_connect,
484 .iw_create_listen = c4iw_create_listen,
485 .iw_destroy_listen = c4iw_destroy_listen,
486 .iw_get_qp = c4iw_get_qp,
487 .iw_reject = c4iw_reject_cr,
488 .iw_rem_ref = c4iw_qp_rem_ref,
489 .map_mr_sg = c4iw_map_mr_sg,
490 .mmap = c4iw_mmap,
491 .modify_qp = c4iw_ib_modify_qp,
492 .modify_srq = c4iw_modify_srq,
493 .poll_cq = c4iw_poll_cq,
494 .post_recv = c4iw_post_receive,
495 .post_send = c4iw_post_send,
496 .post_srq_recv = c4iw_post_srq_recv,
497 .query_device = c4iw_query_device,
498 .query_gid = c4iw_query_gid,
499 .query_port = c4iw_query_port,
500 .query_qp = c4iw_ib_query_qp,
501 .reg_user_mr = c4iw_reg_user_mr,
502 .req_notify_cq = c4iw_arm_cq,
503
504 INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
505 INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw),
506 INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
507 INIT_RDMA_OBJ_SIZE(ib_qp, c4iw_qp, ibqp),
508 INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
509 INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
510};
511
512static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev)
513{
514 int ret;
515 int i;
516
517 for (i = 0; i < rdev->lldi.nports; i++) {
518 ret = ib_device_set_netdev(ib_dev, ndev: rdev->lldi.ports[i],
519 port: i + 1);
520 if (ret)
521 return ret;
522 }
523 return 0;
524}
525
526void c4iw_register_device(struct work_struct *work)
527{
528 int ret;
529 struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
530 struct c4iw_dev *dev = ctx->dev;
531
532 pr_debug("c4iw_dev %p\n", dev);
533 addrconf_addr_eui48(eui: (u8 *)&dev->ibdev.node_guid,
534 addr: dev->rdev.lldi.ports[0]->dev_addr);
535 dev->ibdev.local_dma_lkey = 0;
536 dev->ibdev.node_type = RDMA_NODE_RNIC;
537 BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
538 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
539 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
540 dev->ibdev.num_comp_vectors = dev->rdev.lldi.nciq;
541 dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
542
543 memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name,
544 sizeof(dev->ibdev.iw_ifname));
545
546 ib_set_device_ops(device: &dev->ibdev, ops: &c4iw_dev_ops);
547 ret = set_netdevs(ib_dev: &dev->ibdev, rdev: &dev->rdev);
548 if (ret)
549 goto err_dealloc_ctx;
550 dma_set_max_seg_size(dev: &dev->rdev.lldi.pdev->dev, UINT_MAX);
551 ret = ib_register_device(device: &dev->ibdev, name: "cxgb4_%d",
552 dma_device: &dev->rdev.lldi.pdev->dev);
553 if (ret)
554 goto err_dealloc_ctx;
555 return;
556
557err_dealloc_ctx:
558 pr_err("%s - Failed registering iwarp device: %d\n",
559 pci_name(ctx->lldi.pdev), ret);
560 c4iw_dealloc(ctx);
561 return;
562}
563
564void c4iw_unregister_device(struct c4iw_dev *dev)
565{
566 pr_debug("c4iw_dev %p\n", dev);
567 ib_unregister_device(device: &dev->ibdev);
568 return;
569}
570

source code of linux/drivers/infiniband/hw/cxgb4/provider.c