IB: expand ib_umem_get() prototype
[linux-2.6.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
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 #include <linux/rtnetlink.h>
43
44 #include <asm/io.h>
45 #include <asm/irq.h>
46 #include <asm/byteorder.h>
47
48 #include <rdma/iw_cm.h>
49 #include <rdma/ib_verbs.h>
50 #include <rdma/ib_smi.h>
51 #include <rdma/ib_umem.h>
52 #include <rdma/ib_user_verbs.h>
53
54 #include "cxio_hal.h"
55 #include "iwch.h"
56 #include "iwch_provider.h"
57 #include "iwch_cm.h"
58 #include "iwch_user.h"
59
60 static int iwch_modify_port(struct ib_device *ibdev,
61                             u8 port, int port_modify_mask,
62                             struct ib_port_modify *props)
63 {
64         return -ENOSYS;
65 }
66
67 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
68                                     struct ib_ah_attr *ah_attr)
69 {
70         return ERR_PTR(-ENOSYS);
71 }
72
73 static int iwch_ah_destroy(struct ib_ah *ah)
74 {
75         return -ENOSYS;
76 }
77
78 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
79 {
80         return -ENOSYS;
81 }
82
83 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
84 {
85         return -ENOSYS;
86 }
87
88 static int iwch_process_mad(struct ib_device *ibdev,
89                             int mad_flags,
90                             u8 port_num,
91                             struct ib_wc *in_wc,
92                             struct ib_grh *in_grh,
93                             struct ib_mad *in_mad, struct ib_mad *out_mad)
94 {
95         return -ENOSYS;
96 }
97
98 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
99 {
100         struct iwch_dev *rhp = to_iwch_dev(context->device);
101         struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
102         struct iwch_mm_entry *mm, *tmp;
103
104         PDBG("%s context %p\n", __func__, context);
105         list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
106                 kfree(mm);
107         cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
108         kfree(ucontext);
109         return 0;
110 }
111
112 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
113                                         struct ib_udata *udata)
114 {
115         struct iwch_ucontext *context;
116         struct iwch_dev *rhp = to_iwch_dev(ibdev);
117
118         PDBG("%s ibdev %p\n", __func__, ibdev);
119         context = kzalloc(sizeof(*context), GFP_KERNEL);
120         if (!context)
121                 return ERR_PTR(-ENOMEM);
122         cxio_init_ucontext(&rhp->rdev, &context->uctx);
123         INIT_LIST_HEAD(&context->mmaps);
124         spin_lock_init(&context->mmap_lock);
125         return &context->ibucontext;
126 }
127
128 static int iwch_destroy_cq(struct ib_cq *ib_cq)
129 {
130         struct iwch_cq *chp;
131
132         PDBG("%s ib_cq %p\n", __func__, ib_cq);
133         chp = to_iwch_cq(ib_cq);
134
135         remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
136         atomic_dec(&chp->refcnt);
137         wait_event(chp->wait, !atomic_read(&chp->refcnt));
138
139         cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
140         kfree(chp);
141         return 0;
142 }
143
144 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
145                              struct ib_ucontext *ib_context,
146                              struct ib_udata *udata)
147 {
148         struct iwch_dev *rhp;
149         struct iwch_cq *chp;
150         struct iwch_create_cq_resp uresp;
151         struct iwch_create_cq_req ureq;
152         struct iwch_ucontext *ucontext = NULL;
153
154         PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
155         rhp = to_iwch_dev(ibdev);
156         chp = kzalloc(sizeof(*chp), GFP_KERNEL);
157         if (!chp)
158                 return ERR_PTR(-ENOMEM);
159
160         if (ib_context) {
161                 ucontext = to_iwch_ucontext(ib_context);
162                 if (!t3a_device(rhp)) {
163                         if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
164                                 kfree(chp);
165                                 return ERR_PTR(-EFAULT);
166                         }
167                         chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
168                 }
169         }
170
171         if (t3a_device(rhp)) {
172
173                 /*
174                  * T3A: Add some fluff to handle extra CQEs inserted
175                  * for various errors.
176                  * Additional CQE possibilities:
177                  *      TERMINATE,
178                  *      incoming RDMA WRITE Failures
179                  *      incoming RDMA READ REQUEST FAILUREs
180                  * NOTE: We cannot ensure the CQ won't overflow.
181                  */
182                 entries += 16;
183         }
184         entries = roundup_pow_of_two(entries);
185         chp->cq.size_log2 = ilog2(entries);
186
187         if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
188                 kfree(chp);
189                 return ERR_PTR(-ENOMEM);
190         }
191         chp->rhp = rhp;
192         chp->ibcq.cqe = 1 << chp->cq.size_log2;
193         spin_lock_init(&chp->lock);
194         atomic_set(&chp->refcnt, 1);
195         init_waitqueue_head(&chp->wait);
196         insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
197
198         if (ucontext) {
199                 struct iwch_mm_entry *mm;
200
201                 mm = kmalloc(sizeof *mm, GFP_KERNEL);
202                 if (!mm) {
203                         iwch_destroy_cq(&chp->ibcq);
204                         return ERR_PTR(-ENOMEM);
205                 }
206                 uresp.cqid = chp->cq.cqid;
207                 uresp.size_log2 = chp->cq.size_log2;
208                 spin_lock(&ucontext->mmap_lock);
209                 uresp.key = ucontext->key;
210                 ucontext->key += PAGE_SIZE;
211                 spin_unlock(&ucontext->mmap_lock);
212                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
213                         kfree(mm);
214                         iwch_destroy_cq(&chp->ibcq);
215                         return ERR_PTR(-EFAULT);
216                 }
217                 mm->key = uresp.key;
218                 mm->addr = virt_to_phys(chp->cq.queue);
219                 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
220                                              sizeof (struct t3_cqe));
221                 insert_mmap(ucontext, mm);
222         }
223         PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
224              chp->cq.cqid, chp, (1 << chp->cq.size_log2),
225              (unsigned long long) chp->cq.dma_addr);
226         return &chp->ibcq;
227 }
228
229 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
230 {
231 #ifdef notyet
232         struct iwch_cq *chp = to_iwch_cq(cq);
233         struct t3_cq oldcq, newcq;
234         int ret;
235
236         PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
237
238         /* We don't downsize... */
239         if (cqe <= cq->cqe)
240                 return 0;
241
242         /* create new t3_cq with new size */
243         cqe = roundup_pow_of_two(cqe+1);
244         newcq.size_log2 = ilog2(cqe);
245
246         /* Dont allow resize to less than the current wce count */
247         if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
248                 return -ENOMEM;
249         }
250
251         /* Quiesce all QPs using this CQ */
252         ret = iwch_quiesce_qps(chp);
253         if (ret) {
254                 return ret;
255         }
256
257         ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
258         if (ret) {
259                 return ret;
260         }
261
262         /* copy CQEs */
263         memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
264                                         sizeof(struct t3_cqe));
265
266         /* old iwch_qp gets new t3_cq but keeps old cqid */
267         oldcq = chp->cq;
268         chp->cq = newcq;
269         chp->cq.cqid = oldcq.cqid;
270
271         /* resize new t3_cq to update the HW context */
272         ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
273         if (ret) {
274                 chp->cq = oldcq;
275                 return ret;
276         }
277         chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
278
279         /* destroy old t3_cq */
280         oldcq.cqid = newcq.cqid;
281         ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
282         if (ret) {
283                 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
284                         __func__, ret);
285         }
286
287         /* add user hooks here */
288
289         /* resume qps */
290         ret = iwch_resume_qps(chp);
291         return ret;
292 #else
293         return -ENOSYS;
294 #endif
295 }
296
297 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
298 {
299         struct iwch_dev *rhp;
300         struct iwch_cq *chp;
301         enum t3_cq_opcode cq_op;
302         int err;
303         unsigned long flag;
304         u32 rptr;
305
306         chp = to_iwch_cq(ibcq);
307         rhp = chp->rhp;
308         if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
309                 cq_op = CQ_ARM_SE;
310         else
311                 cq_op = CQ_ARM_AN;
312         if (chp->user_rptr_addr) {
313                 if (get_user(rptr, chp->user_rptr_addr))
314                         return -EFAULT;
315                 spin_lock_irqsave(&chp->lock, flag);
316                 chp->cq.rptr = rptr;
317         } else
318                 spin_lock_irqsave(&chp->lock, flag);
319         PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
320         err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
321         spin_unlock_irqrestore(&chp->lock, flag);
322         if (err < 0)
323                 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
324                        chp->cq.cqid);
325         if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
326                 err = 0;
327         return err;
328 }
329
330 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
331 {
332         int len = vma->vm_end - vma->vm_start;
333         u32 key = vma->vm_pgoff << PAGE_SHIFT;
334         struct cxio_rdev *rdev_p;
335         int ret = 0;
336         struct iwch_mm_entry *mm;
337         struct iwch_ucontext *ucontext;
338         u64 addr;
339
340         PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
341              key, len);
342
343         if (vma->vm_start & (PAGE_SIZE-1)) {
344                 return -EINVAL;
345         }
346
347         rdev_p = &(to_iwch_dev(context->device)->rdev);
348         ucontext = to_iwch_ucontext(context);
349
350         mm = remove_mmap(ucontext, key, len);
351         if (!mm)
352                 return -EINVAL;
353         addr = mm->addr;
354         kfree(mm);
355
356         if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
357             (addr < (rdev_p->rnic_info.udbell_physbase +
358                        rdev_p->rnic_info.udbell_len))) {
359
360                 /*
361                  * Map T3 DB register.
362                  */
363                 if (vma->vm_flags & VM_READ) {
364                         return -EPERM;
365                 }
366
367                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
368                 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
369                 vma->vm_flags &= ~VM_MAYREAD;
370                 ret = io_remap_pfn_range(vma, vma->vm_start,
371                                          addr >> PAGE_SHIFT,
372                                          len, vma->vm_page_prot);
373         } else {
374
375                 /*
376                  * Map WQ or CQ contig dma memory...
377                  */
378                 ret = remap_pfn_range(vma, vma->vm_start,
379                                       addr >> PAGE_SHIFT,
380                                       len, vma->vm_page_prot);
381         }
382
383         return ret;
384 }
385
386 static int iwch_deallocate_pd(struct ib_pd *pd)
387 {
388         struct iwch_dev *rhp;
389         struct iwch_pd *php;
390
391         php = to_iwch_pd(pd);
392         rhp = php->rhp;
393         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
394         cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
395         kfree(php);
396         return 0;
397 }
398
399 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
400                                struct ib_ucontext *context,
401                                struct ib_udata *udata)
402 {
403         struct iwch_pd *php;
404         u32 pdid;
405         struct iwch_dev *rhp;
406
407         PDBG("%s ibdev %p\n", __func__, ibdev);
408         rhp = (struct iwch_dev *) ibdev;
409         pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
410         if (!pdid)
411                 return ERR_PTR(-EINVAL);
412         php = kzalloc(sizeof(*php), GFP_KERNEL);
413         if (!php) {
414                 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
415                 return ERR_PTR(-ENOMEM);
416         }
417         php->pdid = pdid;
418         php->rhp = rhp;
419         if (context) {
420                 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
421                         iwch_deallocate_pd(&php->ibpd);
422                         return ERR_PTR(-EFAULT);
423                 }
424         }
425         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
426         return &php->ibpd;
427 }
428
429 static int iwch_dereg_mr(struct ib_mr *ib_mr)
430 {
431         struct iwch_dev *rhp;
432         struct iwch_mr *mhp;
433         u32 mmid;
434
435         PDBG("%s ib_mr %p\n", __func__, ib_mr);
436         /* There can be no memory windows */
437         if (atomic_read(&ib_mr->usecnt))
438                 return -EINVAL;
439
440         mhp = to_iwch_mr(ib_mr);
441         rhp = mhp->rhp;
442         mmid = mhp->attr.stag >> 8;
443         cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
444                        mhp->attr.pbl_addr);
445         remove_handle(rhp, &rhp->mmidr, mmid);
446         if (mhp->kva)
447                 kfree((void *) (unsigned long) mhp->kva);
448         if (mhp->umem)
449                 ib_umem_release(mhp->umem);
450         PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
451         kfree(mhp);
452         return 0;
453 }
454
455 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
456                                         struct ib_phys_buf *buffer_list,
457                                         int num_phys_buf,
458                                         int acc,
459                                         u64 *iova_start)
460 {
461         __be64 *page_list;
462         int shift;
463         u64 total_size;
464         int npages;
465         struct iwch_dev *rhp;
466         struct iwch_pd *php;
467         struct iwch_mr *mhp;
468         int ret;
469
470         PDBG("%s ib_pd %p\n", __func__, pd);
471         php = to_iwch_pd(pd);
472         rhp = php->rhp;
473
474         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
475         if (!mhp)
476                 return ERR_PTR(-ENOMEM);
477
478         /* First check that we have enough alignment */
479         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
480                 ret = -EINVAL;
481                 goto err;
482         }
483
484         if (num_phys_buf > 1 &&
485             ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
486                 ret = -EINVAL;
487                 goto err;
488         }
489
490         ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
491                                    &total_size, &npages, &shift, &page_list);
492         if (ret)
493                 goto err;
494
495         mhp->rhp = rhp;
496         mhp->attr.pdid = php->pdid;
497         mhp->attr.zbva = 0;
498
499         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
500         mhp->attr.va_fbo = *iova_start;
501         mhp->attr.page_size = shift - 12;
502
503         mhp->attr.len = (u32) total_size;
504         mhp->attr.pbl_size = npages;
505         ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
506         kfree(page_list);
507         if (ret) {
508                 goto err;
509         }
510         return &mhp->ibmr;
511 err:
512         kfree(mhp);
513         return ERR_PTR(ret);
514
515 }
516
517 static int iwch_reregister_phys_mem(struct ib_mr *mr,
518                                      int mr_rereg_mask,
519                                      struct ib_pd *pd,
520                                      struct ib_phys_buf *buffer_list,
521                                      int num_phys_buf,
522                                      int acc, u64 * iova_start)
523 {
524
525         struct iwch_mr mh, *mhp;
526         struct iwch_pd *php;
527         struct iwch_dev *rhp;
528         __be64 *page_list = NULL;
529         int shift = 0;
530         u64 total_size;
531         int npages;
532         int ret;
533
534         PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
535
536         /* There can be no memory windows */
537         if (atomic_read(&mr->usecnt))
538                 return -EINVAL;
539
540         mhp = to_iwch_mr(mr);
541         rhp = mhp->rhp;
542         php = to_iwch_pd(mr->pd);
543
544         /* make sure we are on the same adapter */
545         if (rhp != php->rhp)
546                 return -EINVAL;
547
548         memcpy(&mh, mhp, sizeof *mhp);
549
550         if (mr_rereg_mask & IB_MR_REREG_PD)
551                 php = to_iwch_pd(pd);
552         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
553                 mh.attr.perms = iwch_ib_to_tpt_access(acc);
554         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
555                 ret = build_phys_page_list(buffer_list, num_phys_buf,
556                                            iova_start,
557                                            &total_size, &npages,
558                                            &shift, &page_list);
559                 if (ret)
560                         return ret;
561         }
562
563         ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
564         kfree(page_list);
565         if (ret) {
566                 return ret;
567         }
568         if (mr_rereg_mask & IB_MR_REREG_PD)
569                 mhp->attr.pdid = php->pdid;
570         if (mr_rereg_mask & IB_MR_REREG_ACCESS)
571                 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
572         if (mr_rereg_mask & IB_MR_REREG_TRANS) {
573                 mhp->attr.zbva = 0;
574                 mhp->attr.va_fbo = *iova_start;
575                 mhp->attr.page_size = shift - 12;
576                 mhp->attr.len = (u32) total_size;
577                 mhp->attr.pbl_size = npages;
578         }
579
580         return 0;
581 }
582
583
584 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
585                                       u64 virt, int acc, struct ib_udata *udata)
586 {
587         __be64 *pages;
588         int shift, n, len;
589         int i, j, k;
590         int err = 0;
591         struct ib_umem_chunk *chunk;
592         struct iwch_dev *rhp;
593         struct iwch_pd *php;
594         struct iwch_mr *mhp;
595         struct iwch_reg_user_mr_resp uresp;
596
597         PDBG("%s ib_pd %p\n", __func__, pd);
598
599         php = to_iwch_pd(pd);
600         rhp = php->rhp;
601         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
602         if (!mhp)
603                 return ERR_PTR(-ENOMEM);
604
605         mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
606         if (IS_ERR(mhp->umem)) {
607                 err = PTR_ERR(mhp->umem);
608                 kfree(mhp);
609                 return ERR_PTR(err);
610         }
611
612         shift = ffs(mhp->umem->page_size) - 1;
613
614         n = 0;
615         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
616                 n += chunk->nents;
617
618         pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
619         if (!pages) {
620                 err = -ENOMEM;
621                 goto err;
622         }
623
624         i = n = 0;
625
626         list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
627                 for (j = 0; j < chunk->nmap; ++j) {
628                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
629                         for (k = 0; k < len; ++k) {
630                                 pages[i++] = cpu_to_be64(sg_dma_address(
631                                         &chunk->page_list[j]) +
632                                         mhp->umem->page_size * k);
633                         }
634                 }
635
636         mhp->rhp = rhp;
637         mhp->attr.pdid = php->pdid;
638         mhp->attr.zbva = 0;
639         mhp->attr.perms = iwch_ib_to_tpt_access(acc);
640         mhp->attr.va_fbo = virt;
641         mhp->attr.page_size = shift - 12;
642         mhp->attr.len = (u32) length;
643         mhp->attr.pbl_size = i;
644         err = iwch_register_mem(rhp, php, mhp, shift, pages);
645         kfree(pages);
646         if (err)
647                 goto err;
648
649         if (udata && !t3a_device(rhp)) {
650                 uresp.pbl_addr = (mhp->attr.pbl_addr -
651                                  rhp->rdev.rnic_info.pbl_base) >> 3;
652                 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
653                      uresp.pbl_addr);
654
655                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
656                         iwch_dereg_mr(&mhp->ibmr);
657                         err = -EFAULT;
658                         goto err;
659                 }
660         }
661
662         return &mhp->ibmr;
663
664 err:
665         ib_umem_release(mhp->umem);
666         kfree(mhp);
667         return ERR_PTR(err);
668 }
669
670 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
671 {
672         struct ib_phys_buf bl;
673         u64 kva;
674         struct ib_mr *ibmr;
675
676         PDBG("%s ib_pd %p\n", __func__, pd);
677
678         /*
679          * T3 only supports 32 bits of size.
680          */
681         bl.size = 0xffffffff;
682         bl.addr = 0;
683         kva = 0;
684         ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
685         return ibmr;
686 }
687
688 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
689 {
690         struct iwch_dev *rhp;
691         struct iwch_pd *php;
692         struct iwch_mw *mhp;
693         u32 mmid;
694         u32 stag = 0;
695         int ret;
696
697         php = to_iwch_pd(pd);
698         rhp = php->rhp;
699         mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
700         if (!mhp)
701                 return ERR_PTR(-ENOMEM);
702         ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
703         if (ret) {
704                 kfree(mhp);
705                 return ERR_PTR(ret);
706         }
707         mhp->rhp = rhp;
708         mhp->attr.pdid = php->pdid;
709         mhp->attr.type = TPT_MW;
710         mhp->attr.stag = stag;
711         mmid = (stag) >> 8;
712         insert_handle(rhp, &rhp->mmidr, mhp, mmid);
713         PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
714         return &(mhp->ibmw);
715 }
716
717 static int iwch_dealloc_mw(struct ib_mw *mw)
718 {
719         struct iwch_dev *rhp;
720         struct iwch_mw *mhp;
721         u32 mmid;
722
723         mhp = to_iwch_mw(mw);
724         rhp = mhp->rhp;
725         mmid = (mw->rkey) >> 8;
726         cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
727         remove_handle(rhp, &rhp->mmidr, mmid);
728         kfree(mhp);
729         PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
730         return 0;
731 }
732
733 static int iwch_destroy_qp(struct ib_qp *ib_qp)
734 {
735         struct iwch_dev *rhp;
736         struct iwch_qp *qhp;
737         struct iwch_qp_attributes attrs;
738         struct iwch_ucontext *ucontext;
739
740         qhp = to_iwch_qp(ib_qp);
741         rhp = qhp->rhp;
742
743         attrs.next_state = IWCH_QP_STATE_ERROR;
744         iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
745         wait_event(qhp->wait, !qhp->ep);
746
747         remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
748
749         atomic_dec(&qhp->refcnt);
750         wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
751
752         ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
753                                   : NULL;
754         cxio_destroy_qp(&rhp->rdev, &qhp->wq,
755                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
756
757         PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
758              ib_qp, qhp->wq.qpid, qhp);
759         kfree(qhp);
760         return 0;
761 }
762
763 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
764                              struct ib_qp_init_attr *attrs,
765                              struct ib_udata *udata)
766 {
767         struct iwch_dev *rhp;
768         struct iwch_qp *qhp;
769         struct iwch_pd *php;
770         struct iwch_cq *schp;
771         struct iwch_cq *rchp;
772         struct iwch_create_qp_resp uresp;
773         int wqsize, sqsize, rqsize;
774         struct iwch_ucontext *ucontext;
775
776         PDBG("%s ib_pd %p\n", __func__, pd);
777         if (attrs->qp_type != IB_QPT_RC)
778                 return ERR_PTR(-EINVAL);
779         php = to_iwch_pd(pd);
780         rhp = php->rhp;
781         schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
782         rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
783         if (!schp || !rchp)
784                 return ERR_PTR(-EINVAL);
785
786         /* The RQT size must be # of entries + 1 rounded up to a power of two */
787         rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
788         if (rqsize == attrs->cap.max_recv_wr)
789                 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
790
791         /* T3 doesn't support RQT depth < 16 */
792         if (rqsize < 16)
793                 rqsize = 16;
794
795         if (rqsize > T3_MAX_RQ_SIZE)
796                 return ERR_PTR(-EINVAL);
797
798         if (attrs->cap.max_inline_data > T3_MAX_INLINE)
799                 return ERR_PTR(-EINVAL);
800
801         /*
802          * NOTE: The SQ and total WQ sizes don't need to be
803          * a power of two.  However, all the code assumes
804          * they are. EG: Q_FREECNT() and friends.
805          */
806         sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
807         wqsize = roundup_pow_of_two(rqsize + sqsize);
808         PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
809              wqsize, sqsize, rqsize);
810         qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
811         if (!qhp)
812                 return ERR_PTR(-ENOMEM);
813         qhp->wq.size_log2 = ilog2(wqsize);
814         qhp->wq.rq_size_log2 = ilog2(rqsize);
815         qhp->wq.sq_size_log2 = ilog2(sqsize);
816         ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
817         if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
818                            ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
819                 kfree(qhp);
820                 return ERR_PTR(-ENOMEM);
821         }
822
823         attrs->cap.max_recv_wr = rqsize - 1;
824         attrs->cap.max_send_wr = sqsize;
825         attrs->cap.max_inline_data = T3_MAX_INLINE;
826
827         qhp->rhp = rhp;
828         qhp->attr.pd = php->pdid;
829         qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
830         qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
831         qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
832         qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
833         qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
834         qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
835         qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
836         qhp->attr.state = IWCH_QP_STATE_IDLE;
837         qhp->attr.next_state = IWCH_QP_STATE_IDLE;
838
839         /*
840          * XXX - These don't get passed in from the openib user
841          * at create time.  The CM sets them via a QP modify.
842          * Need to fix...  I think the CM should
843          */
844         qhp->attr.enable_rdma_read = 1;
845         qhp->attr.enable_rdma_write = 1;
846         qhp->attr.enable_bind = 1;
847         qhp->attr.max_ord = 1;
848         qhp->attr.max_ird = 1;
849
850         spin_lock_init(&qhp->lock);
851         init_waitqueue_head(&qhp->wait);
852         atomic_set(&qhp->refcnt, 1);
853         insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
854
855         if (udata) {
856
857                 struct iwch_mm_entry *mm1, *mm2;
858
859                 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
860                 if (!mm1) {
861                         iwch_destroy_qp(&qhp->ibqp);
862                         return ERR_PTR(-ENOMEM);
863                 }
864
865                 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
866                 if (!mm2) {
867                         kfree(mm1);
868                         iwch_destroy_qp(&qhp->ibqp);
869                         return ERR_PTR(-ENOMEM);
870                 }
871
872                 uresp.qpid = qhp->wq.qpid;
873                 uresp.size_log2 = qhp->wq.size_log2;
874                 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
875                 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
876                 spin_lock(&ucontext->mmap_lock);
877                 uresp.key = ucontext->key;
878                 ucontext->key += PAGE_SIZE;
879                 uresp.db_key = ucontext->key;
880                 ucontext->key += PAGE_SIZE;
881                 spin_unlock(&ucontext->mmap_lock);
882                 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
883                         kfree(mm1);
884                         kfree(mm2);
885                         iwch_destroy_qp(&qhp->ibqp);
886                         return ERR_PTR(-EFAULT);
887                 }
888                 mm1->key = uresp.key;
889                 mm1->addr = virt_to_phys(qhp->wq.queue);
890                 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
891                 insert_mmap(ucontext, mm1);
892                 mm2->key = uresp.db_key;
893                 mm2->addr = qhp->wq.udb & PAGE_MASK;
894                 mm2->len = PAGE_SIZE;
895                 insert_mmap(ucontext, mm2);
896         }
897         qhp->ibqp.qp_num = qhp->wq.qpid;
898         init_timer(&(qhp->timer));
899         PDBG("%s sq_num_entries %d, rq_num_entries %d "
900              "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
901              __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
902              qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
903              1 << qhp->wq.size_log2);
904         return &qhp->ibqp;
905 }
906
907 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
908                       int attr_mask, struct ib_udata *udata)
909 {
910         struct iwch_dev *rhp;
911         struct iwch_qp *qhp;
912         enum iwch_qp_attr_mask mask = 0;
913         struct iwch_qp_attributes attrs;
914
915         PDBG("%s ib_qp %p\n", __func__, ibqp);
916
917         /* iwarp does not support the RTR state */
918         if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
919                 attr_mask &= ~IB_QP_STATE;
920
921         /* Make sure we still have something left to do */
922         if (!attr_mask)
923                 return 0;
924
925         memset(&attrs, 0, sizeof attrs);
926         qhp = to_iwch_qp(ibqp);
927         rhp = qhp->rhp;
928
929         attrs.next_state = iwch_convert_state(attr->qp_state);
930         attrs.enable_rdma_read = (attr->qp_access_flags &
931                                IB_ACCESS_REMOTE_READ) ?  1 : 0;
932         attrs.enable_rdma_write = (attr->qp_access_flags &
933                                 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
934         attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
935
936
937         mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
938         mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
939                         (IWCH_QP_ATTR_ENABLE_RDMA_READ |
940                          IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
941                          IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
942
943         return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
944 }
945
946 void iwch_qp_add_ref(struct ib_qp *qp)
947 {
948         PDBG("%s ib_qp %p\n", __func__, qp);
949         atomic_inc(&(to_iwch_qp(qp)->refcnt));
950 }
951
952 void iwch_qp_rem_ref(struct ib_qp *qp)
953 {
954         PDBG("%s ib_qp %p\n", __func__, qp);
955         if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
956                 wake_up(&(to_iwch_qp(qp)->wait));
957 }
958
959 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
960 {
961         PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
962         return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
963 }
964
965
966 static int iwch_query_pkey(struct ib_device *ibdev,
967                            u8 port, u16 index, u16 * pkey)
968 {
969         PDBG("%s ibdev %p\n", __func__, ibdev);
970         *pkey = 0;
971         return 0;
972 }
973
974 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
975                           int index, union ib_gid *gid)
976 {
977         struct iwch_dev *dev;
978
979         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
980                __func__, ibdev, port, index, gid);
981         dev = to_iwch_dev(ibdev);
982         BUG_ON(port == 0 || port > 2);
983         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
984         memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
985         return 0;
986 }
987
988 static int iwch_query_device(struct ib_device *ibdev,
989                              struct ib_device_attr *props)
990 {
991
992         struct iwch_dev *dev;
993         PDBG("%s ibdev %p\n", __func__, ibdev);
994
995         dev = to_iwch_dev(ibdev);
996         memset(props, 0, sizeof *props);
997         memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
998         props->device_cap_flags = dev->device_cap_flags;
999         props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1000         props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1001         props->max_mr_size = ~0ull;
1002         props->max_qp = dev->attr.max_qps;
1003         props->max_qp_wr = dev->attr.max_wrs;
1004         props->max_sge = dev->attr.max_sge_per_wr;
1005         props->max_sge_rd = 1;
1006         props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1007         props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1008         props->max_cq = dev->attr.max_cqs;
1009         props->max_cqe = dev->attr.max_cqes_per_cq;
1010         props->max_mr = dev->attr.max_mem_regs;
1011         props->max_pd = dev->attr.max_pds;
1012         props->local_ca_ack_delay = 0;
1013
1014         return 0;
1015 }
1016
1017 static int iwch_query_port(struct ib_device *ibdev,
1018                            u8 port, struct ib_port_attr *props)
1019 {
1020         PDBG("%s ibdev %p\n", __func__, ibdev);
1021         props->max_mtu = IB_MTU_4096;
1022         props->lid = 0;
1023         props->lmc = 0;
1024         props->sm_lid = 0;
1025         props->sm_sl = 0;
1026         props->state = IB_PORT_ACTIVE;
1027         props->phys_state = 0;
1028         props->port_cap_flags =
1029             IB_PORT_CM_SUP |
1030             IB_PORT_SNMP_TUNNEL_SUP |
1031             IB_PORT_REINIT_SUP |
1032             IB_PORT_DEVICE_MGMT_SUP |
1033             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1034         props->gid_tbl_len = 1;
1035         props->pkey_tbl_len = 1;
1036         props->qkey_viol_cntr = 0;
1037         props->active_width = 2;
1038         props->active_speed = 2;
1039         props->max_msg_sz = -1;
1040
1041         return 0;
1042 }
1043
1044 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1045                         char *buf)
1046 {
1047         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1048                                                  ibdev.dev);
1049         PDBG("%s dev 0x%p\n", __func__, dev);
1050         return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1051 }
1052
1053 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1054 {
1055         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1056                                                  ibdev.dev);
1057         struct ethtool_drvinfo info;
1058         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1059
1060         PDBG("%s dev 0x%p\n", __func__, dev);
1061         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1062         return sprintf(buf, "%s\n", info.fw_version);
1063 }
1064
1065 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1066                         char *buf)
1067 {
1068         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1069                                                  ibdev.dev);
1070         struct ethtool_drvinfo info;
1071         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1072
1073         PDBG("%s dev 0x%p\n", __func__, dev);
1074         lldev->ethtool_ops->get_drvinfo(lldev, &info);
1075         return sprintf(buf, "%s\n", info.driver);
1076 }
1077
1078 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1079                           char *buf)
1080 {
1081         struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1082                                                  ibdev.dev);
1083         PDBG("%s dev 0x%p\n", __func__, dev);
1084         return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1085                        iwch_dev->rdev.rnic_info.pdev->device);
1086 }
1087
1088 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1089 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1090 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1091 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1092
1093 static struct device_attribute *iwch_class_attributes[] = {
1094         &dev_attr_hw_rev,
1095         &dev_attr_fw_ver,
1096         &dev_attr_hca_type,
1097         &dev_attr_board_id
1098 };
1099
1100 int iwch_register_device(struct iwch_dev *dev)
1101 {
1102         int ret;
1103         int i;
1104
1105         PDBG("%s iwch_dev %p\n", __func__, dev);
1106         strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1107         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1108         memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1109         dev->ibdev.owner = THIS_MODULE;
1110         dev->device_cap_flags =
1111             (IB_DEVICE_ZERO_STAG | IB_DEVICE_MEM_WINDOW);
1112
1113         dev->ibdev.uverbs_cmd_mask =
1114             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1115             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1116             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1117             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1118             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1119             (1ull << IB_USER_VERBS_CMD_REG_MR) |
1120             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1121             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1122             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1123             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1124             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1125             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1126             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1127             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1128             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1129             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1130             (1ull << IB_USER_VERBS_CMD_POST_RECV);
1131         dev->ibdev.node_type = RDMA_NODE_RNIC;
1132         memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1133         dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1134         dev->ibdev.num_comp_vectors = 1;
1135         dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1136         dev->ibdev.query_device = iwch_query_device;
1137         dev->ibdev.query_port = iwch_query_port;
1138         dev->ibdev.modify_port = iwch_modify_port;
1139         dev->ibdev.query_pkey = iwch_query_pkey;
1140         dev->ibdev.query_gid = iwch_query_gid;
1141         dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1142         dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1143         dev->ibdev.mmap = iwch_mmap;
1144         dev->ibdev.alloc_pd = iwch_allocate_pd;
1145         dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1146         dev->ibdev.create_ah = iwch_ah_create;
1147         dev->ibdev.destroy_ah = iwch_ah_destroy;
1148         dev->ibdev.create_qp = iwch_create_qp;
1149         dev->ibdev.modify_qp = iwch_ib_modify_qp;
1150         dev->ibdev.destroy_qp = iwch_destroy_qp;
1151         dev->ibdev.create_cq = iwch_create_cq;
1152         dev->ibdev.destroy_cq = iwch_destroy_cq;
1153         dev->ibdev.resize_cq = iwch_resize_cq;
1154         dev->ibdev.poll_cq = iwch_poll_cq;
1155         dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1156         dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1157         dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1158         dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1159         dev->ibdev.dereg_mr = iwch_dereg_mr;
1160         dev->ibdev.alloc_mw = iwch_alloc_mw;
1161         dev->ibdev.bind_mw = iwch_bind_mw;
1162         dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1163
1164         dev->ibdev.attach_mcast = iwch_multicast_attach;
1165         dev->ibdev.detach_mcast = iwch_multicast_detach;
1166         dev->ibdev.process_mad = iwch_process_mad;
1167
1168         dev->ibdev.req_notify_cq = iwch_arm_cq;
1169         dev->ibdev.post_send = iwch_post_send;
1170         dev->ibdev.post_recv = iwch_post_receive;
1171
1172
1173         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1174         if (!dev->ibdev.iwcm)
1175                 return -ENOMEM;
1176
1177         dev->ibdev.iwcm->connect = iwch_connect;
1178         dev->ibdev.iwcm->accept = iwch_accept_cr;
1179         dev->ibdev.iwcm->reject = iwch_reject_cr;
1180         dev->ibdev.iwcm->create_listen = iwch_create_listen;
1181         dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1182         dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1183         dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1184         dev->ibdev.iwcm->get_qp = iwch_get_qp;
1185
1186         ret = ib_register_device(&dev->ibdev);
1187         if (ret)
1188                 goto bail1;
1189
1190         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1191                 ret = device_create_file(&dev->ibdev.dev,
1192                                          iwch_class_attributes[i]);
1193                 if (ret) {
1194                         goto bail2;
1195                 }
1196         }
1197         return 0;
1198 bail2:
1199         ib_unregister_device(&dev->ibdev);
1200 bail1:
1201         return ret;
1202 }
1203
1204 void iwch_unregister_device(struct iwch_dev *dev)
1205 {
1206         int i;
1207
1208         PDBG("%s iwch_dev %p\n", __func__, dev);
1209         for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1210                 device_remove_file(&dev->ibdev.dev,
1211                                    iwch_class_attributes[i]);
1212         ib_unregister_device(&dev->ibdev);
1213         return;
1214 }