1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34 #include <sys/cdefs.h>
35 #define LINUXKPI_PARAM_PREFIX iw_cxgbe_
36
37 #include "opt_inet.h"
38
39 #ifdef TCP_OFFLOAD
40 #include <asm/pgtable.h>
41 #include <linux/page.h>
42 #include <rdma/ib_verbs.h>
43 #include <rdma/ib_user_verbs.h>
44
45 #include "iw_cxgbe.h"
46 #include "user.h"
47
48 static int fastreg_support = 1;
49 module_param(fastreg_support, int, 0644);
50 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)");
51
c4iw_modify_port(struct ib_device * ibdev,u8 port,int port_modify_mask,struct ib_port_modify * props)52 static int c4iw_modify_port(struct ib_device *ibdev,
53 u8 port, int port_modify_mask,
54 struct ib_port_modify *props)
55 {
56 return -ENOSYS;
57 }
58
c4iw_ah_create(struct ib_ah * ah,struct ib_ah_attr * ah_attr,u32 flags,struct ib_udata * udata)59 static int c4iw_ah_create(struct ib_ah *ah,
60 struct ib_ah_attr *ah_attr, u32 flags,
61 struct ib_udata *udata)
62 {
63 return -ENOSYS;
64 }
65
c4iw_ah_destroy(struct ib_ah * ah,u32 flags)66 static void c4iw_ah_destroy(struct ib_ah *ah, u32 flags)
67 {
68 }
69
c4iw_multicast_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)70 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
71 {
72 return -ENOSYS;
73 }
74
c4iw_multicast_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)75 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
76 {
77 return -ENOSYS;
78 }
79
c4iw_process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad_hdr * in_mad,size_t in_mad_size,struct ib_mad_hdr * out_mad,size_t * out_mad_size,u16 * out_mad_pkey_index)80 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags,
81 u8 port_num, const struct ib_wc *in_wc,
82 const struct ib_grh *in_grh,
83 const struct ib_mad_hdr *in_mad,
84 size_t in_mad_size,
85 struct ib_mad_hdr *out_mad,
86 size_t *out_mad_size,
87 u16 *out_mad_pkey_index)
88
89 {
90 return -ENOSYS;
91 }
92
c4iw_dealloc_ucontext(struct ib_ucontext * context)93 static void c4iw_dealloc_ucontext(struct ib_ucontext *context)
94 {
95 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
96 struct c4iw_dev *rhp;
97 struct c4iw_mm_entry *mm, *tmp;
98
99 pr_debug("context %p\n", context);
100 rhp = to_c4iw_dev(ucontext->ibucontext.device);
101
102 CTR2(KTR_IW_CXGBE, "%s ucontext %p", __func__, ucontext);
103
104 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
105 kfree(mm);
106 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
107 }
108
c4iw_alloc_ucontext(struct ib_ucontext * ucontext,struct ib_udata * udata)109 static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext,
110 struct ib_udata *udata)
111 {
112 struct ib_device *ibdev = ucontext->device;
113 struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext);
114 struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
115 static int warned;
116 struct c4iw_alloc_ucontext_resp uresp;
117 int ret = 0;
118 struct c4iw_mm_entry *mm = NULL;
119
120 PDBG("%s ibdev %p\n", __func__, ibdev);
121 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
122 INIT_LIST_HEAD(&context->mmaps);
123 spin_lock_init(&context->mmap_lock);
124
125 if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
126 if (!warned++)
127 log(LOG_ERR, "%s Warning - downlevel libcxgb4 "
128 "(non-fatal), device status page disabled.\n",
129 __func__);
130 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
131 } else {
132
133 mm = kmalloc(sizeof *mm, GFP_KERNEL);
134 if (!mm)
135 goto err;
136
137 uresp.status_page_size = PAGE_SIZE;
138
139 spin_lock(&context->mmap_lock);
140 uresp.status_page_key = context->key;
141 context->key += PAGE_SIZE;
142 spin_unlock(&context->mmap_lock);
143
144 ret = ib_copy_to_udata(udata, &uresp,
145 sizeof(uresp) - sizeof(uresp.reserved));
146 if (ret)
147 goto err_mm;
148
149 mm->key = uresp.status_page_key;
150 mm->addr = vtophys(rhp->rdev.status_page);
151 mm->len = PAGE_SIZE;
152 insert_mmap(context, mm);
153 }
154 return 0;
155 err_mm:
156 kfree(mm);
157 err:
158 return ret;
159 }
160
c4iw_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)161 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
162 {
163 int len = vma->vm_end - vma->vm_start;
164 u32 key = vma->vm_pgoff << PAGE_SHIFT;
165 struct c4iw_rdev *rdev;
166 int ret = 0;
167 struct c4iw_mm_entry *mm;
168 struct c4iw_ucontext *ucontext;
169 u64 addr = 0;
170
171 CTR4(KTR_IW_CXGBE, "%s:1 ctx %p vma %p, vm_start %u", __func__,
172 context, vma, vma->vm_start);
173
174 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__,
175 vma->vm_pgoff, key, len);
176
177 if (vma->vm_start & (PAGE_SIZE-1)) {
178 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p",
179 __func__, vma->vm_start, vma);
180 return -EINVAL;
181 }
182
183 rdev = &(to_c4iw_dev(context->device)->rdev);
184 ucontext = to_c4iw_ucontext(context);
185
186 mm = remove_mmap(ucontext, key, len);
187 if (!mm) {
188 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__,
189 ucontext, key, len);
190 return -EINVAL;
191 }
192 addr = mm->addr;
193 kfree(mm);
194
195 /* user DB-GTS registers if addr in udbs_res range,
196 * else WQ or CQ memory.
197 * */
198 if (rdev->adap->iwt.wc_en && addr >= rdev->bar2_pa &&
199 addr < rdev->bar2_pa + rdev->bar2_len)
200 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
201
202 ret = rdma_user_mmap_io(context, vma, addr >> PAGE_SHIFT, len,
203 vma->vm_page_prot, NULL);
204 CTR4(KTR_IW_CXGBE, "%s:4 ctx %p vma %p ret %u", __func__, context, vma,
205 ret);
206 return ret;
207 }
208
209 static void
c4iw_deallocate_pd(struct ib_pd * pd,struct ib_udata * udata)210 c4iw_deallocate_pd(struct ib_pd *pd, struct ib_udata *udata)
211 {
212 struct c4iw_pd *php = to_c4iw_pd(pd);
213 struct c4iw_dev *rhp = php->rhp;
214
215 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid);
216
217 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
218 mutex_lock(&rhp->rdev.stats.lock);
219 rhp->rdev.stats.pd.cur--;
220 mutex_unlock(&rhp->rdev.stats.lock);
221 }
222
223 static int
c4iw_allocate_pd(struct ib_pd * pd,struct ib_udata * udata)224 c4iw_allocate_pd(struct ib_pd *pd, struct ib_udata *udata)
225 {
226 struct c4iw_pd *php = to_c4iw_pd(pd);
227 struct ib_device *ibdev = pd->device;
228 u32 pdid;
229 struct c4iw_dev *rhp;
230
231 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, pd %p, data %p", __func__, ibdev,
232 pd, udata);
233 rhp = (struct c4iw_dev *) ibdev;
234 if (__predict_false(c4iw_stopped(&rhp->rdev)))
235 return -EIO;
236 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table);
237 if (!pdid)
238 return -EINVAL;
239
240 php->pdid = pdid;
241 php->rhp = rhp;
242 if (udata) {
243 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
244 c4iw_deallocate_pd(&php->ibpd, udata);
245 return -EFAULT;
246 }
247 }
248 mutex_lock(&rhp->rdev.stats.lock);
249 rhp->rdev.stats.pd.cur++;
250 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
251 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
252 mutex_unlock(&rhp->rdev.stats.lock);
253
254 CTR5(KTR_IW_CXGBE,
255 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__,
256 ibdev, udata, pdid, php);
257 return (0);
258 }
259
260 static int
c4iw_query_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)261 c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
262 {
263
264 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__,
265 ibdev, port, index, pkey);
266
267 *pkey = 0;
268 return (0);
269 }
270
271 static int
c4iw_query_gid(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)272 c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid)
273 {
274 struct c4iw_dev *dev;
275 struct port_info *pi;
276 struct adapter *sc;
277
278 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__,
279 ibdev, port, index, gid);
280
281 memset(&gid->raw[0], 0, sizeof(gid->raw));
282 dev = to_c4iw_dev(ibdev);
283 sc = dev->rdev.adap;
284 if (port == 0 || port > sc->params.nports)
285 return (-EINVAL);
286 pi = sc->port[port - 1];
287 memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN);
288 return (0);
289 }
290
291 static int
c4iw_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)292 c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
293 struct ib_udata *uhw)
294 {
295 struct c4iw_dev *dev = to_c4iw_dev(ibdev);
296 struct adapter *sc = dev->rdev.adap;
297
298 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props);
299
300 if (uhw->inlen || uhw->outlen)
301 return -EINVAL;
302
303 memset(props, 0, sizeof *props);
304 memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr,
305 ETHER_ADDR_LEN);
306 props->hw_ver = sc->params.chipid;
307 props->fw_ver = sc->params.fw_vers;
308 props->device_cap_flags = dev->device_cap_flags;
309 props->page_size_cap = T4_PAGESIZE_MASK;
310 props->vendor_id = pci_get_vendor(sc->dev);
311 props->vendor_part_id = pci_get_device(sc->dev);
312 props->max_mr_size = T4_MAX_MR_SIZE;
313 props->max_qp = sc->vres.qp.size / 2;
314 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
315 props->max_sge = T4_MAX_RECV_SGE;
316 props->max_sge_rd = 1;
317 props->max_res_rd_atom = sc->params.max_ird_adapter;
318 props->max_qp_rd_atom = min(sc->params.max_ordird_qp,
319 c4iw_max_read_depth);
320 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
321 props->max_cq = sc->vres.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 = t4_max_fr_depth(&dev->rdev, use_dsgl);
327
328 return (0);
329 }
330
331 /*
332 * Returns -errno on failure.
333 */
334 static int
c4iw_query_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)335 c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
336 {
337 struct c4iw_dev *dev;
338 struct adapter *sc;
339 struct port_info *pi;
340 if_t ifp;
341
342 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev,
343 port, props);
344
345 dev = to_c4iw_dev(ibdev);
346 sc = dev->rdev.adap;
347 if (port > sc->params.nports)
348 return (-EINVAL);
349 pi = sc->port[port - 1];
350 ifp = pi->vi[0].ifp;
351
352 memset(props, 0, sizeof(struct ib_port_attr));
353 props->max_mtu = IB_MTU_4096;
354 if (if_getmtu(ifp) >= 4096)
355 props->active_mtu = IB_MTU_4096;
356 else if (if_getmtu(ifp) >= 2048)
357 props->active_mtu = IB_MTU_2048;
358 else if (if_getmtu(ifp) >= 1024)
359 props->active_mtu = IB_MTU_1024;
360 else if (if_getmtu(ifp) >= 512)
361 props->active_mtu = IB_MTU_512;
362 else
363 props->active_mtu = IB_MTU_256;
364 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN;
365 props->port_cap_flags =
366 IB_PORT_CM_SUP |
367 IB_PORT_SNMP_TUNNEL_SUP |
368 IB_PORT_REINIT_SUP |
369 IB_PORT_DEVICE_MGMT_SUP |
370 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
371 props->gid_tbl_len = 1;
372 props->pkey_tbl_len = 1;
373 props->active_width = 2;
374 props->active_speed = 2;
375 props->max_msg_sz = -1;
376
377 return 0;
378 }
379
c4iw_port_immutable(struct ib_device * ibdev,u8 port_num,struct ib_port_immutable * immutable)380 static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
381 struct ib_port_immutable *immutable)
382 {
383 struct ib_port_attr attr;
384 int err;
385
386 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
387
388 err = ib_query_port(ibdev, port_num, &attr);
389 if (err)
390 return err;
391
392 immutable->pkey_tbl_len = attr.pkey_tbl_len;
393 immutable->gid_tbl_len = attr.gid_tbl_len;
394
395 return 0;
396 }
397
398 /*
399 * Returns -errno on error.
400 */
401 int
c4iw_register_device(struct c4iw_dev * dev)402 c4iw_register_device(struct c4iw_dev *dev)
403 {
404 struct adapter *sc = dev->rdev.adap;
405 struct ib_device *ibdev = &dev->ibdev;
406 struct iw_cm_verbs *iwcm;
407 int ret;
408
409 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc);
410 BUG_ON(!sc->port[0]);
411 ret = linux_pci_attach_device(sc->dev, NULL, NULL, &dev->pdev);
412 if (ret)
413 return (ret);
414
415 #define c4iw_ib_cq c4iw_cq
416 #define c4iw_ib_pd c4iw_pd
417 #define c4iw_ib_qp c4iw_qp
418 #define c4iw_ib_ucontext c4iw_ucontext
419 INIT_IB_DEVICE_OPS(&ibdev->ops, c4iw, CXGB4);
420
421 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name));
422 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid));
423 memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN);
424 ibdev->owner = THIS_MODULE;
425 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
426 if (fastreg_support)
427 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
428 ibdev->local_dma_lkey = 0;
429 ibdev->uverbs_cmd_mask =
430 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
431 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
432 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
433 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
434 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
435 (1ull << IB_USER_VERBS_CMD_REG_MR) |
436 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
437 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
438 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
439 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
440 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
441 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
442 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
443 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
444 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
445 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
446 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
447 (1ull << IB_USER_VERBS_CMD_POST_RECV);
448 ibdev->node_type = RDMA_NODE_RNIC;
449 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc));
450 ibdev->phys_port_cnt = sc->params.nports;
451 ibdev->num_comp_vectors = 1;
452 ibdev->dma_device = &dev->pdev.dev;
453 ibdev->query_device = c4iw_query_device;
454 ibdev->query_port = c4iw_query_port;
455 ibdev->modify_port = c4iw_modify_port;
456 ibdev->query_pkey = c4iw_query_pkey;
457 ibdev->query_gid = c4iw_query_gid;
458 ibdev->alloc_ucontext = c4iw_alloc_ucontext;
459 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext;
460 ibdev->mmap = c4iw_mmap;
461 ibdev->alloc_pd = c4iw_allocate_pd;
462 ibdev->dealloc_pd = c4iw_deallocate_pd;
463 ibdev->create_ah = c4iw_ah_create;
464 ibdev->destroy_ah = c4iw_ah_destroy;
465 ibdev->create_qp = c4iw_create_qp;
466 ibdev->modify_qp = c4iw_ib_modify_qp;
467 ibdev->query_qp = c4iw_ib_query_qp;
468 ibdev->destroy_qp = c4iw_destroy_qp;
469 ibdev->create_cq = c4iw_create_cq;
470 ibdev->destroy_cq = c4iw_destroy_cq;
471 ibdev->resize_cq = c4iw_resize_cq;
472 ibdev->poll_cq = c4iw_poll_cq;
473 ibdev->get_dma_mr = c4iw_get_dma_mr;
474 ibdev->reg_user_mr = c4iw_reg_user_mr;
475 ibdev->dereg_mr = c4iw_dereg_mr;
476 ibdev->alloc_mw = c4iw_alloc_mw;
477 ibdev->dealloc_mw = c4iw_dealloc_mw;
478 ibdev->alloc_mr = c4iw_alloc_mr;
479 ibdev->map_mr_sg = c4iw_map_mr_sg;
480 ibdev->attach_mcast = c4iw_multicast_attach;
481 ibdev->detach_mcast = c4iw_multicast_detach;
482 ibdev->process_mad = c4iw_process_mad;
483 ibdev->req_notify_cq = c4iw_arm_cq;
484 ibdev->post_send = c4iw_post_send;
485 ibdev->post_recv = c4iw_post_receive;
486 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
487 ibdev->get_port_immutable = c4iw_port_immutable;
488
489 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL);
490 if (iwcm == NULL)
491 return (-ENOMEM);
492
493 iwcm->connect = c4iw_connect;
494 iwcm->accept = c4iw_accept_cr;
495 iwcm->reject = c4iw_reject_cr;
496 iwcm->create_listen = c4iw_create_listen;
497 iwcm->destroy_listen = c4iw_destroy_listen;
498 iwcm->add_ref = c4iw_qp_add_ref;
499 iwcm->rem_ref = c4iw_qp_rem_ref;
500 iwcm->get_qp = c4iw_get_qp;
501 ibdev->iwcm = iwcm;
502
503 ret = ib_register_device(&dev->ibdev, NULL);
504 if (ret) {
505 kfree(iwcm);
506 linux_pci_detach_device(&dev->pdev);
507 }
508
509 return (ret);
510 }
511
512 void
c4iw_unregister_device(struct c4iw_dev * dev)513 c4iw_unregister_device(struct c4iw_dev *dev)
514 {
515
516 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev,
517 dev->rdev.adap);
518 ib_unregister_device(&dev->ibdev);
519 kfree(dev->ibdev.iwcm);
520 linux_pci_detach_device(&dev->pdev);
521 return;
522 }
523 #endif
524