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RDMA/cxgb3: Handle build_phys_page_list() failure in iwch_reregister_phys_mem()
[linux-2.6/verdex.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
blob24e0df04f7dbcc01310666924db6cc3204c4ee7f
1 /*
2 * Copyright (c) 2006 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
43 #include <asm/io.h>
44 #include <asm/irq.h>
45 #include <asm/byteorder.h>
46
47 #include <rdma/iw_cm.h>
48 #include <rdma/ib_verbs.h>
49 #include <rdma/ib_smi.h>
50 #include <rdma/ib_user_verbs.h>
51
52 #include "cxio_hal.h"
53 #include "iwch.h"
54 #include "iwch_provider.h"
55 #include "iwch_cm.h"
56 #include "iwch_user.h"
57
58 static int iwch_modify_port(struct ib_device *ibdev,
59 u8 port, int port_modify_mask,
60 struct ib_port_modify *props)
61 {
62 return -ENOSYS;
63 }
64
65 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
66 struct ib_ah_attr *ah_attr)
67 {
68 return ERR_PTR(-ENOSYS);
69 }
70
71 static int iwch_ah_destroy(struct ib_ah *ah)
72 {
73 return -ENOSYS;
74 }
75
76 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
77 {
78 return -ENOSYS;
79 }
80
81 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
82 {
83 return -ENOSYS;
84 }
85
86 static int iwch_process_mad(struct ib_device *ibdev,
87 int mad_flags,
88 u8 port_num,
89 struct ib_wc *in_wc,
90 struct ib_grh *in_grh,
91 struct ib_mad *in_mad, struct ib_mad *out_mad)
92 {
93 return -ENOSYS;
94 }
95
96 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
97 {
98 struct iwch_dev *rhp = to_iwch_dev(context->device);
99 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
100 struct iwch_mm_entry *mm, *tmp;
101
102 PDBG("%s context %p\n", __FUNCTION__, context);
103 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
104 kfree(mm);
105 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
106 kfree(ucontext);
107 return 0;
108 }
109
110 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
111 struct ib_udata *udata)
112 {
113 struct iwch_ucontext *context;
114 struct iwch_dev *rhp = to_iwch_dev(ibdev);
115
116 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
117 context = kzalloc(sizeof(*context), GFP_KERNEL);
118 if (!context)
119 return ERR_PTR(-ENOMEM);
120 cxio_init_ucontext(&rhp->rdev, &context->uctx);
121 INIT_LIST_HEAD(&context->mmaps);
122 spin_lock_init(&context->mmap_lock);
123 return &context->ibucontext;
124 }
125
126 static int iwch_destroy_cq(struct ib_cq *ib_cq)
127 {
128 struct iwch_cq *chp;
129
130 PDBG("%s ib_cq %p\n", __FUNCTION__, ib_cq);
131 chp = to_iwch_cq(ib_cq);
132
133 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
134 atomic_dec(&chp->refcnt);
135 wait_event(chp->wait, !atomic_read(&chp->refcnt));
136
137 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
138 kfree(chp);
139 return 0;
140 }
141
142 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries,
143 struct ib_ucontext *ib_context,
144 struct ib_udata *udata)
145 {
146 struct iwch_dev *rhp;
147 struct iwch_cq *chp;
148 struct iwch_create_cq_resp uresp;
149 struct iwch_create_cq_req ureq;
150 struct iwch_ucontext *ucontext = NULL;
151
152 PDBG("%s ib_dev %p entries %d\n", __FUNCTION__, ibdev, entries);
153 rhp = to_iwch_dev(ibdev);
154 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
155 if (!chp)
156 return ERR_PTR(-ENOMEM);
157
158 if (ib_context) {
159 ucontext = to_iwch_ucontext(ib_context);
160 if (!t3a_device(rhp)) {
161 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
162 kfree(chp);
163 return ERR_PTR(-EFAULT);
164 }
165 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
166 }
167 }
168
169 if (t3a_device(rhp)) {
170
171 /*
172 * T3A: Add some fluff to handle extra CQEs inserted
173 * for various errors.
174 * Additional CQE possibilities:
175 * TERMINATE,
176 * incoming RDMA WRITE Failures
177 * incoming RDMA READ REQUEST FAILUREs
178 * NOTE: We cannot ensure the CQ won't overflow.
179 */
180 entries += 16;
181 }
182 entries = roundup_pow_of_two(entries);
183 chp->cq.size_log2 = ilog2(entries);
184
185 if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
186 kfree(chp);
187 return ERR_PTR(-ENOMEM);
188 }
189 chp->rhp = rhp;
190 chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1;
191 spin_lock_init(&chp->lock);
192 atomic_set(&chp->refcnt, 1);
193 init_waitqueue_head(&chp->wait);
194 insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
195
196 if (ucontext) {
197 struct iwch_mm_entry *mm;
198
199 mm = kmalloc(sizeof *mm, GFP_KERNEL);
200 if (!mm) {
201 iwch_destroy_cq(&chp->ibcq);
202 return ERR_PTR(-ENOMEM);
203 }
204 uresp.cqid = chp->cq.cqid;
205 uresp.size_log2 = chp->cq.size_log2;
206 spin_lock(&ucontext->mmap_lock);
207 uresp.key = ucontext->key;
208 ucontext->key += PAGE_SIZE;
209 spin_unlock(&ucontext->mmap_lock);
210 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
211 kfree(mm);
212 iwch_destroy_cq(&chp->ibcq);
213 return ERR_PTR(-EFAULT);
214 }
215 mm->key = uresp.key;
216 mm->addr = virt_to_phys(chp->cq.queue);
217 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
218 sizeof (struct t3_cqe));
219 insert_mmap(ucontext, mm);
220 }
221 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
222 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
223 (unsigned long long) chp->cq.dma_addr);
224 return &chp->ibcq;
225 }
226
227 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
228 {
229 #ifdef notyet
230 struct iwch_cq *chp = to_iwch_cq(cq);
231 struct t3_cq oldcq, newcq;
232 int ret;
233
234 PDBG("%s ib_cq %p cqe %d\n", __FUNCTION__, cq, cqe);
235
236 /* We don't downsize... */
237 if (cqe <= cq->cqe)
238 return 0;
239
240 /* create new t3_cq with new size */
241 cqe = roundup_pow_of_two(cqe+1);
242 newcq.size_log2 = ilog2(cqe);
243
244 /* Dont allow resize to less than the current wce count */
245 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
246 return -ENOMEM;
247 }
248
249 /* Quiesce all QPs using this CQ */
250 ret = iwch_quiesce_qps(chp);
251 if (ret) {
252 return ret;
253 }
254
255 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
256 if (ret) {
257 return ret;
258 }
259
260 /* copy CQEs */
261 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
262 sizeof(struct t3_cqe));
263
264 /* old iwch_qp gets new t3_cq but keeps old cqid */
265 oldcq = chp->cq;
266 chp->cq = newcq;
267 chp->cq.cqid = oldcq.cqid;
268
269 /* resize new t3_cq to update the HW context */
270 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
271 if (ret) {
272 chp->cq = oldcq;
273 return ret;
274 }
275 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
276
277 /* destroy old t3_cq */
278 oldcq.cqid = newcq.cqid;
279 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
280 if (ret) {
281 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
282 __FUNCTION__, ret);
283 }
284
285 /* add user hooks here */
286
287 /* resume qps */
288 ret = iwch_resume_qps(chp);
289 return ret;
290 #else
291 return -ENOSYS;
292 #endif
293 }
294
295 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
296 {
297 struct iwch_dev *rhp;
298 struct iwch_cq *chp;
299 enum t3_cq_opcode cq_op;
300 int err;
301 unsigned long flag;
302 u32 rptr;
303
304 chp = to_iwch_cq(ibcq);
305 rhp = chp->rhp;
306 if (notify == IB_CQ_SOLICITED)
307 cq_op = CQ_ARM_SE;
308 else
309 cq_op = CQ_ARM_AN;
310 if (chp->user_rptr_addr) {
311 if (get_user(rptr, chp->user_rptr_addr))
312 return -EFAULT;
313 spin_lock_irqsave(&chp->lock, flag);
314 chp->cq.rptr = rptr;
315 } else
316 spin_lock_irqsave(&chp->lock, flag);
317 PDBG("%s rptr 0x%x\n", __FUNCTION__, chp->cq.rptr);
318 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
319 spin_unlock_irqrestore(&chp->lock, flag);
320 if (err)
321 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
322 chp->cq.cqid);
323 return err;
324 }
325
326 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
327 {
328 int len = vma->vm_end - vma->vm_start;
329 u32 key = vma->vm_pgoff << PAGE_SHIFT;
330 struct cxio_rdev *rdev_p;
331 int ret = 0;
332 struct iwch_mm_entry *mm;
333 struct iwch_ucontext *ucontext;
334 u64 addr;
335
336 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
337 key, len);
338
339 if (vma->vm_start & (PAGE_SIZE-1)) {
340 return -EINVAL;
341 }
342
343 rdev_p = &(to_iwch_dev(context->device)->rdev);
344 ucontext = to_iwch_ucontext(context);
345
346 mm = remove_mmap(ucontext, key, len);
347 if (!mm)
348 return -EINVAL;
349 addr = mm->addr;
350 kfree(mm);
351
352 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
353 (addr < (rdev_p->rnic_info.udbell_physbase +
354 rdev_p->rnic_info.udbell_len))) {
355
356 /*
357 * Map T3 DB register.
358 */
359 if (vma->vm_flags & VM_READ) {
360 return -EPERM;
361 }
362
363 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
364 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
365 vma->vm_flags &= ~VM_MAYREAD;
366 ret = io_remap_pfn_range(vma, vma->vm_start,
367 addr >> PAGE_SHIFT,
368 len, vma->vm_page_prot);
369 } else {
370
371 /*
372 * Map WQ or CQ contig dma memory...
373 */
374 ret = remap_pfn_range(vma, vma->vm_start,
375 addr >> PAGE_SHIFT,
376 len, vma->vm_page_prot);
377 }
378
379 return ret;
380 }
381
382 static int iwch_deallocate_pd(struct ib_pd *pd)
383 {
384 struct iwch_dev *rhp;
385 struct iwch_pd *php;
386
387 php = to_iwch_pd(pd);
388 rhp = php->rhp;
389 PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
390 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
391 kfree(php);
392 return 0;
393 }
394
395 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
396 struct ib_ucontext *context,
397 struct ib_udata *udata)
398 {
399 struct iwch_pd *php;
400 u32 pdid;
401 struct iwch_dev *rhp;
402
403 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
404 rhp = (struct iwch_dev *) ibdev;
405 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
406 if (!pdid)
407 return ERR_PTR(-EINVAL);
408 php = kzalloc(sizeof(*php), GFP_KERNEL);
409 if (!php) {
410 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
411 return ERR_PTR(-ENOMEM);
412 }
413 php->pdid = pdid;
414 php->rhp = rhp;
415 if (context) {
416 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
417 iwch_deallocate_pd(&php->ibpd);
418 return ERR_PTR(-EFAULT);
419 }
420 }
421 PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
422 return &php->ibpd;
423 }
424
425 static int iwch_dereg_mr(struct ib_mr *ib_mr)
426 {
427 struct iwch_dev *rhp;
428 struct iwch_mr *mhp;
429 u32 mmid;
430
431 PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
432 /* There can be no memory windows */
433 if (atomic_read(&ib_mr->usecnt))
434 return -EINVAL;
435
436 mhp = to_iwch_mr(ib_mr);
437 rhp = mhp->rhp;
438 mmid = mhp->attr.stag >> 8;
439 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
440 mhp->attr.pbl_addr);
441 remove_handle(rhp, &rhp->mmidr, mmid);
442 if (mhp->kva)
443 kfree((void *) (unsigned long) mhp->kva);
444 PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
445 kfree(mhp);
446 return 0;
447 }
448
449 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
450 struct ib_phys_buf *buffer_list,
451 int num_phys_buf,
452 int acc,
453 u64 *iova_start)
454 {
455 __be64 *page_list;
456 int shift;
457 u64 total_size;
458 int npages;
459 struct iwch_dev *rhp;
460 struct iwch_pd *php;
461 struct iwch_mr *mhp;
462 int ret;
463
464 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
465 php = to_iwch_pd(pd);
466 rhp = php->rhp;
467
468 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
469 if (!mhp)
470 return ERR_PTR(-ENOMEM);
471
472 /* First check that we have enough alignment */
473 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
474 ret = -EINVAL;
475 goto err;
476 }
477
478 if (num_phys_buf > 1 &&
479 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
480 ret = -EINVAL;
481 goto err;
482 }
483
484 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
485 &total_size, &npages, &shift, &page_list);
486 if (ret)
487 goto err;
488
489 mhp->rhp = rhp;
490 mhp->attr.pdid = php->pdid;
491 mhp->attr.zbva = 0;
492
493 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
494 mhp->attr.va_fbo = *iova_start;
495 mhp->attr.page_size = shift - 12;
496
497 mhp->attr.len = (u32) total_size;
498 mhp->attr.pbl_size = npages;
499 ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
500 kfree(page_list);
501 if (ret) {
502 goto err;
503 }
504 return &mhp->ibmr;
505 err:
506 kfree(mhp);
507 return ERR_PTR(ret);
508
509 }
510
511 static int iwch_reregister_phys_mem(struct ib_mr *mr,
512 int mr_rereg_mask,
513 struct ib_pd *pd,
514 struct ib_phys_buf *buffer_list,
515 int num_phys_buf,
516 int acc, u64 * iova_start)
517 {
518
519 struct iwch_mr mh, *mhp;
520 struct iwch_pd *php;
521 struct iwch_dev *rhp;
522 __be64 *page_list = NULL;
523 int shift = 0;
524 u64 total_size;
525 int npages;
526 int ret;
527
528 PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
529
530 /* There can be no memory windows */
531 if (atomic_read(&mr->usecnt))
532 return -EINVAL;
533
534 mhp = to_iwch_mr(mr);
535 rhp = mhp->rhp;
536 php = to_iwch_pd(mr->pd);
537
538 /* make sure we are on the same adapter */
539 if (rhp != php->rhp)
540 return -EINVAL;
541
542 memcpy(&mh, mhp, sizeof *mhp);
543
544 if (mr_rereg_mask & IB_MR_REREG_PD)
545 php = to_iwch_pd(pd);
546 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
547 mh.attr.perms = iwch_ib_to_tpt_access(acc);
548 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
549 ret = build_phys_page_list(buffer_list, num_phys_buf,
550 iova_start,
551 &total_size, &npages,
552 &shift, &page_list);
553 if (ret)
554 return ret;
555 }
556
557 ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
558 kfree(page_list);
559 if (ret) {
560 return ret;
561 }
562 if (mr_rereg_mask & IB_MR_REREG_PD)
563 mhp->attr.pdid = php->pdid;
564 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
565 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
566 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
567 mhp->attr.zbva = 0;
568 mhp->attr.va_fbo = *iova_start;
569 mhp->attr.page_size = shift - 12;
570 mhp->attr.len = (u32) total_size;
571 mhp->attr.pbl_size = npages;
572 }
573
574 return 0;
575 }
576
577
578 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
579 int acc, struct ib_udata *udata)
580 {
581 __be64 *pages;
582 int shift, n, len;
583 int i, j, k;
584 int err = 0;
585 struct ib_umem_chunk *chunk;
586 struct iwch_dev *rhp;
587 struct iwch_pd *php;
588 struct iwch_mr *mhp;
589 struct iwch_reg_user_mr_resp uresp;
590
591 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
592 shift = ffs(region->page_size) - 1;
593
594 php = to_iwch_pd(pd);
595 rhp = php->rhp;
596 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
597 if (!mhp)
598 return ERR_PTR(-ENOMEM);
599
600 n = 0;
601 list_for_each_entry(chunk, &region->chunk_list, list)
602 n += chunk->nents;
603
604 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
605 if (!pages) {
606 err = -ENOMEM;
607 goto err;
608 }
609
610 i = n = 0;
611
612 list_for_each_entry(chunk, &region->chunk_list, list)
613 for (j = 0; j < chunk->nmap; ++j) {
614 len = sg_dma_len(&chunk->page_list[j]) >> shift;
615 for (k = 0; k < len; ++k) {
616 pages[i++] = cpu_to_be64(sg_dma_address(
617 &chunk->page_list[j]) +
618 region->page_size * k);
619 }
620 }
621
622 mhp->rhp = rhp;
623 mhp->attr.pdid = php->pdid;
624 mhp->attr.zbva = 0;
625 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
626 mhp->attr.va_fbo = region->virt_base;
627 mhp->attr.page_size = shift - 12;
628 mhp->attr.len = (u32) region->length;
629 mhp->attr.pbl_size = i;
630 err = iwch_register_mem(rhp, php, mhp, shift, pages);
631 kfree(pages);
632 if (err)
633 goto err;
634
635 if (udata && t3b_device(rhp)) {
636 uresp.pbl_addr = (mhp->attr.pbl_addr -
637 rhp->rdev.rnic_info.pbl_base) >> 3;
638 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
639 uresp.pbl_addr);
640
641 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
642 iwch_dereg_mr(&mhp->ibmr);
643 err = -EFAULT;
644 goto err;
645 }
646 }
647
648 return &mhp->ibmr;
649
650 err:
651 kfree(mhp);
652 return ERR_PTR(err);
653 }
654
655 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
656 {
657 struct ib_phys_buf bl;
658 u64 kva;
659 struct ib_mr *ibmr;
660
661 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
662
663 /*
664 * T3 only supports 32 bits of size.
665 */
666 bl.size = 0xffffffff;
667 bl.addr = 0;
668 kva = 0;
669 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
670 return ibmr;
671 }
672
673 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
674 {
675 struct iwch_dev *rhp;
676 struct iwch_pd *php;
677 struct iwch_mw *mhp;
678 u32 mmid;
679 u32 stag = 0;
680 int ret;
681
682 php = to_iwch_pd(pd);
683 rhp = php->rhp;
684 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
685 if (!mhp)
686 return ERR_PTR(-ENOMEM);
687 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
688 if (ret) {
689 kfree(mhp);
690 return ERR_PTR(ret);
691 }
692 mhp->rhp = rhp;
693 mhp->attr.pdid = php->pdid;
694 mhp->attr.type = TPT_MW;
695 mhp->attr.stag = stag;
696 mmid = (stag) >> 8;
697 insert_handle(rhp, &rhp->mmidr, mhp, mmid);
698 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
699 return &(mhp->ibmw);
700 }
701
702 static int iwch_dealloc_mw(struct ib_mw *mw)
703 {
704 struct iwch_dev *rhp;
705 struct iwch_mw *mhp;
706 u32 mmid;
707
708 mhp = to_iwch_mw(mw);
709 rhp = mhp->rhp;
710 mmid = (mw->rkey) >> 8;
711 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
712 remove_handle(rhp, &rhp->mmidr, mmid);
713 kfree(mhp);
714 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
715 return 0;
716 }
717
718 static int iwch_destroy_qp(struct ib_qp *ib_qp)
719 {
720 struct iwch_dev *rhp;
721 struct iwch_qp *qhp;
722 struct iwch_qp_attributes attrs;
723 struct iwch_ucontext *ucontext;
724
725 qhp = to_iwch_qp(ib_qp);
726 rhp = qhp->rhp;
727
728 attrs.next_state = IWCH_QP_STATE_ERROR;
729 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
730 wait_event(qhp->wait, !qhp->ep);
731
732 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
733
734 atomic_dec(&qhp->refcnt);
735 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
736
737 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
738 : NULL;
739 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
740 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
741
742 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
743 ib_qp, qhp->wq.qpid, qhp);
744 kfree(qhp);
745 return 0;
746 }
747
748 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
749 struct ib_qp_init_attr *attrs,
750 struct ib_udata *udata)
751 {
752 struct iwch_dev *rhp;
753 struct iwch_qp *qhp;
754 struct iwch_pd *php;
755 struct iwch_cq *schp;
756 struct iwch_cq *rchp;
757 struct iwch_create_qp_resp uresp;
758 int wqsize, sqsize, rqsize;
759 struct iwch_ucontext *ucontext;
760
761 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
762 if (attrs->qp_type != IB_QPT_RC)
763 return ERR_PTR(-EINVAL);
764 php = to_iwch_pd(pd);
765 rhp = php->rhp;
766 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
767 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
768 if (!schp || !rchp)
769 return ERR_PTR(-EINVAL);
770
771 /* The RQT size must be # of entries + 1 rounded up to a power of two */
772 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
773 if (rqsize == attrs->cap.max_recv_wr)
774 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
775
776 /* T3 doesn't support RQT depth < 16 */
777 if (rqsize < 16)
778 rqsize = 16;
779
780 if (rqsize > T3_MAX_RQ_SIZE)
781 return ERR_PTR(-EINVAL);
782
783 /*
784 * NOTE: The SQ and total WQ sizes don't need to be
785 * a power of two. However, all the code assumes
786 * they are. EG: Q_FREECNT() and friends.
787 */
788 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
789 wqsize = roundup_pow_of_two(rqsize + sqsize);
790 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
791 wqsize, sqsize, rqsize);
792 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
793 if (!qhp)
794 return ERR_PTR(-ENOMEM);
795 qhp->wq.size_log2 = ilog2(wqsize);
796 qhp->wq.rq_size_log2 = ilog2(rqsize);
797 qhp->wq.sq_size_log2 = ilog2(sqsize);
798 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
799 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
800 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
801 kfree(qhp);
802 return ERR_PTR(-ENOMEM);
803 }
804 attrs->cap.max_recv_wr = rqsize - 1;
805 attrs->cap.max_send_wr = sqsize;
806 qhp->rhp = rhp;
807 qhp->attr.pd = php->pdid;
808 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
809 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
810 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
811 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
812 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
813 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
814 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
815 qhp->attr.state = IWCH_QP_STATE_IDLE;
816 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
817
818 /*
819 * XXX - These don't get passed in from the openib user
820 * at create time. The CM sets them via a QP modify.
821 * Need to fix... I think the CM should
822 */
823 qhp->attr.enable_rdma_read = 1;
824 qhp->attr.enable_rdma_write = 1;
825 qhp->attr.enable_bind = 1;
826 qhp->attr.max_ord = 1;
827 qhp->attr.max_ird = 1;
828
829 spin_lock_init(&qhp->lock);
830 init_waitqueue_head(&qhp->wait);
831 atomic_set(&qhp->refcnt, 1);
832 insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
833
834 if (udata) {
835
836 struct iwch_mm_entry *mm1, *mm2;
837
838 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
839 if (!mm1) {
840 iwch_destroy_qp(&qhp->ibqp);
841 return ERR_PTR(-ENOMEM);
842 }
843
844 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
845 if (!mm2) {
846 kfree(mm1);
847 iwch_destroy_qp(&qhp->ibqp);
848 return ERR_PTR(-ENOMEM);
849 }
850
851 uresp.qpid = qhp->wq.qpid;
852 uresp.size_log2 = qhp->wq.size_log2;
853 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
854 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
855 spin_lock(&ucontext->mmap_lock);
856 uresp.key = ucontext->key;
857 ucontext->key += PAGE_SIZE;
858 uresp.db_key = ucontext->key;
859 ucontext->key += PAGE_SIZE;
860 spin_unlock(&ucontext->mmap_lock);
861 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
862 kfree(mm1);
863 kfree(mm2);
864 iwch_destroy_qp(&qhp->ibqp);
865 return ERR_PTR(-EFAULT);
866 }
867 mm1->key = uresp.key;
868 mm1->addr = virt_to_phys(qhp->wq.queue);
869 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
870 insert_mmap(ucontext, mm1);
871 mm2->key = uresp.db_key;
872 mm2->addr = qhp->wq.udb & PAGE_MASK;
873 mm2->len = PAGE_SIZE;
874 insert_mmap(ucontext, mm2);
875 }
876 qhp->ibqp.qp_num = qhp->wq.qpid;
877 init_timer(&(qhp->timer));
878 PDBG("%s sq_num_entries %d, rq_num_entries %d "
879 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
880 __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
881 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
882 1 << qhp->wq.size_log2);
883 return &qhp->ibqp;
884 }
885
886 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
887 int attr_mask, struct ib_udata *udata)
888 {
889 struct iwch_dev *rhp;
890 struct iwch_qp *qhp;
891 enum iwch_qp_attr_mask mask = 0;
892 struct iwch_qp_attributes attrs;
893
894 PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
895
896 /* iwarp does not support the RTR state */
897 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
898 attr_mask &= ~IB_QP_STATE;
899
900 /* Make sure we still have something left to do */
901 if (!attr_mask)
902 return 0;
903
904 memset(&attrs, 0, sizeof attrs);
905 qhp = to_iwch_qp(ibqp);
906 rhp = qhp->rhp;
907
908 attrs.next_state = iwch_convert_state(attr->qp_state);
909 attrs.enable_rdma_read = (attr->qp_access_flags &
910 IB_ACCESS_REMOTE_READ) ? 1 : 0;
911 attrs.enable_rdma_write = (attr->qp_access_flags &
912 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
913 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
914
915
916 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
917 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
918 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
919 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
920 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
921
922 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
923 }
924
925 void iwch_qp_add_ref(struct ib_qp *qp)
926 {
927 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
928 atomic_inc(&(to_iwch_qp(qp)->refcnt));
929 }
930
931 void iwch_qp_rem_ref(struct ib_qp *qp)
932 {
933 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
934 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
935 wake_up(&(to_iwch_qp(qp)->wait));
936 }
937
938 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
939 {
940 PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
941 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
942 }
943
944
945 static int iwch_query_pkey(struct ib_device *ibdev,
946 u8 port, u16 index, u16 * pkey)
947 {
948 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
949 *pkey = 0;
950 return 0;
951 }
952
953 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
954 int index, union ib_gid *gid)
955 {
956 struct iwch_dev *dev;
957
958 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
959 __FUNCTION__, ibdev, port, index, gid);
960 dev = to_iwch_dev(ibdev);
961 BUG_ON(port == 0 || port > 2);
962 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
963 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
964 return 0;
965 }
966
967 static int iwch_query_device(struct ib_device *ibdev,
968 struct ib_device_attr *props)
969 {
970
971 struct iwch_dev *dev;
972 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
973
974 dev = to_iwch_dev(ibdev);
975 memset(props, 0, sizeof *props);
976 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
977 props->device_cap_flags = dev->device_cap_flags;
978 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
979 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
980 props->max_mr_size = ~0ull;
981 props->max_qp = dev->attr.max_qps;
982 props->max_qp_wr = dev->attr.max_wrs;
983 props->max_sge = dev->attr.max_sge_per_wr;
984 props->max_sge_rd = 1;
985 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
986 props->max_cq = dev->attr.max_cqs;
987 props->max_cqe = dev->attr.max_cqes_per_cq;
988 props->max_mr = dev->attr.max_mem_regs;
989 props->max_pd = dev->attr.max_pds;
990 props->local_ca_ack_delay = 0;
991
992 return 0;
993 }
994
995 static int iwch_query_port(struct ib_device *ibdev,
996 u8 port, struct ib_port_attr *props)
997 {
998 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
999 props->max_mtu = IB_MTU_4096;
1000 props->lid = 0;
1001 props->lmc = 0;
1002 props->sm_lid = 0;
1003 props->sm_sl = 0;
1004 props->state = IB_PORT_ACTIVE;
1005 props->phys_state = 0;
1006 props->port_cap_flags =
1007 IB_PORT_CM_SUP |
1008 IB_PORT_SNMP_TUNNEL_SUP |
1009 IB_PORT_REINIT_SUP |
1010 IB_PORT_DEVICE_MGMT_SUP |
1011 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1012 props->gid_tbl_len = 1;
1013 props->pkey_tbl_len = 1;
1014 props->qkey_viol_cntr = 0;
1015 props->active_width = 2;
1016 props->active_speed = 2;
1017 props->max_msg_sz = -1;
1018
1019 return 0;
1020 }
1021
1022 static ssize_t show_rev(struct class_device *cdev, char *buf)
1023 {
1024 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1025 ibdev.class_dev);
1026 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1027 return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1028 }
1029
1030 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1031 {
1032 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1033 ibdev.class_dev);
1034 struct ethtool_drvinfo info;
1035 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1036
1037 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1038 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1039 return sprintf(buf, "%s\n", info.fw_version);
1040 }
1041
1042 static ssize_t show_hca(struct class_device *cdev, char *buf)
1043 {
1044 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1045 ibdev.class_dev);
1046 struct ethtool_drvinfo info;
1047 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1048
1049 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1050 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1051 return sprintf(buf, "%s\n", info.driver);
1052 }
1053
1054 static ssize_t show_board(struct class_device *cdev, char *buf)
1055 {
1056 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1057 ibdev.class_dev);
1058 PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1059 return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1060 dev->rdev.rnic_info.pdev->device);
1061 }
1062
1063 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1064 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1065 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1066 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1067
1068 static struct class_device_attribute *iwch_class_attributes[] = {
1069 &class_device_attr_hw_rev,
1070 &class_device_attr_fw_ver,
1071 &class_device_attr_hca_type,
1072 &class_device_attr_board_id
1073 };
1074
1075 int iwch_register_device(struct iwch_dev *dev)
1076 {
1077 int ret;
1078 int i;
1079
1080 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1081 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1082 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1083 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1084 dev->ibdev.owner = THIS_MODULE;
1085 dev->device_cap_flags =
1086 (IB_DEVICE_ZERO_STAG |
1087 IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1088
1089 dev->ibdev.uverbs_cmd_mask =
1090 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1091 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1092 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1093 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1094 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1095 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1096 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1097 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1098 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1099 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1100 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1101 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1102 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1103 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1104 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1105 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1106 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1107 dev->ibdev.node_type = RDMA_NODE_RNIC;
1108 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1109 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1110 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1111 dev->ibdev.class_dev.dev = &(dev->rdev.rnic_info.pdev->dev);
1112 dev->ibdev.query_device = iwch_query_device;
1113 dev->ibdev.query_port = iwch_query_port;
1114 dev->ibdev.modify_port = iwch_modify_port;
1115 dev->ibdev.query_pkey = iwch_query_pkey;
1116 dev->ibdev.query_gid = iwch_query_gid;
1117 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1118 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1119 dev->ibdev.mmap = iwch_mmap;
1120 dev->ibdev.alloc_pd = iwch_allocate_pd;
1121 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1122 dev->ibdev.create_ah = iwch_ah_create;
1123 dev->ibdev.destroy_ah = iwch_ah_destroy;
1124 dev->ibdev.create_qp = iwch_create_qp;
1125 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1126 dev->ibdev.destroy_qp = iwch_destroy_qp;
1127 dev->ibdev.create_cq = iwch_create_cq;
1128 dev->ibdev.destroy_cq = iwch_destroy_cq;
1129 dev->ibdev.resize_cq = iwch_resize_cq;
1130 dev->ibdev.poll_cq = iwch_poll_cq;
1131 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1132 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1133 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1134 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1135 dev->ibdev.dereg_mr = iwch_dereg_mr;
1136 dev->ibdev.alloc_mw = iwch_alloc_mw;
1137 dev->ibdev.bind_mw = iwch_bind_mw;
1138 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1139
1140 dev->ibdev.attach_mcast = iwch_multicast_attach;
1141 dev->ibdev.detach_mcast = iwch_multicast_detach;
1142 dev->ibdev.process_mad = iwch_process_mad;
1143
1144 dev->ibdev.req_notify_cq = iwch_arm_cq;
1145 dev->ibdev.post_send = iwch_post_send;
1146 dev->ibdev.post_recv = iwch_post_receive;
1147
1148
1149 dev->ibdev.iwcm =
1150 (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1151 GFP_KERNEL);
1152 dev->ibdev.iwcm->connect = iwch_connect;
1153 dev->ibdev.iwcm->accept = iwch_accept_cr;
1154 dev->ibdev.iwcm->reject = iwch_reject_cr;
1155 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1156 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1157 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1158 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1159 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1160
1161 ret = ib_register_device(&dev->ibdev);
1162 if (ret)
1163 goto bail1;
1164
1165 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1166 ret = class_device_create_file(&dev->ibdev.class_dev,
1167 iwch_class_attributes[i]);
1168 if (ret) {
1169 goto bail2;
1170 }
1171 }
1172 return 0;
1173 bail2:
1174 ib_unregister_device(&dev->ibdev);
1175 bail1:
1176 return ret;
1177 }
1178
1179 void iwch_unregister_device(struct iwch_dev *dev)
1180 {
1181 int i;
1182
1183 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1184 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1185 class_device_remove_file(&dev->ibdev.class_dev,
1186 iwch_class_attributes[i]);
1187 ib_unregister_device(&dev->ibdev);
1188 return;
1189 }
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