?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
blobf0c777589374cccf1af919534805675246e05f2c
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_umem.h>
51 #include <rdma/ib_user_verbs.h>
52
53 #include "cxio_hal.h"
54 #include "iwch.h"
55 #include "iwch_provider.h"
56 #include "iwch_cm.h"
57 #include "iwch_user.h"
58
59 static int iwch_modify_port(struct ib_device *ibdev,
60 u8 port, int port_modify_mask,
61 struct ib_port_modify *props)
62 {
63 return -ENOSYS;
64 }
65
66 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
67 struct ib_ah_attr *ah_attr)
68 {
69 return ERR_PTR(-ENOSYS);
70 }
71
72 static int iwch_ah_destroy(struct ib_ah *ah)
73 {
74 return -ENOSYS;
75 }
76
77 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
78 {
79 return -ENOSYS;
80 }
81
82 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
83 {
84 return -ENOSYS;
85 }
86
87 static int iwch_process_mad(struct ib_device *ibdev,
88 int mad_flags,
89 u8 port_num,
90 struct ib_wc *in_wc,
91 struct ib_grh *in_grh,
92 struct ib_mad *in_mad, struct ib_mad *out_mad)
93 {
94 return -ENOSYS;
95 }
96
97 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
98 {
99 struct iwch_dev *rhp = to_iwch_dev(context->device);
100 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
101 struct iwch_mm_entry *mm, *tmp;
102
103 PDBG("%s context %p\n", __FUNCTION__, context);
104 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
105 kfree(mm);
106 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
107 kfree(ucontext);
108 return 0;
109 }
110
111 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
112 struct ib_udata *udata)
113 {
114 struct iwch_ucontext *context;
115 struct iwch_dev *rhp = to_iwch_dev(ibdev);
116
117 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
118 context = kzalloc(sizeof(*context), GFP_KERNEL);
119 if (!context)
120 return ERR_PTR(-ENOMEM);
121 cxio_init_ucontext(&rhp->rdev, &context->uctx);
122 INIT_LIST_HEAD(&context->mmaps);
123 spin_lock_init(&context->mmap_lock);
124 return &context->ibucontext;
125 }
126
127 static int iwch_destroy_cq(struct ib_cq *ib_cq)
128 {
129 struct iwch_cq *chp;
130
131 PDBG("%s ib_cq %p\n", __FUNCTION__, ib_cq);
132 chp = to_iwch_cq(ib_cq);
133
134 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
135 atomic_dec(&chp->refcnt);
136 wait_event(chp->wait, !atomic_read(&chp->refcnt));
137
138 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
139 kfree(chp);
140 return 0;
141 }
142
143 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
144 struct ib_ucontext *ib_context,
145 struct ib_udata *udata)
146 {
147 struct iwch_dev *rhp;
148 struct iwch_cq *chp;
149 struct iwch_create_cq_resp uresp;
150 struct iwch_create_cq_req ureq;
151 struct iwch_ucontext *ucontext = NULL;
152
153 PDBG("%s ib_dev %p entries %d\n", __FUNCTION__, ibdev, entries);
154 rhp = to_iwch_dev(ibdev);
155 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
156 if (!chp)
157 return ERR_PTR(-ENOMEM);
158
159 if (ib_context) {
160 ucontext = to_iwch_ucontext(ib_context);
161 if (!t3a_device(rhp)) {
162 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
163 kfree(chp);
164 return ERR_PTR(-EFAULT);
165 }
166 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
167 }
168 }
169
170 if (t3a_device(rhp)) {
171
172 /*
173 * T3A: Add some fluff to handle extra CQEs inserted
174 * for various errors.
175 * Additional CQE possibilities:
176 * TERMINATE,
177 * incoming RDMA WRITE Failures
178 * incoming RDMA READ REQUEST FAILUREs
179 * NOTE: We cannot ensure the CQ won't overflow.
180 */
181 entries += 16;
182 }
183 entries = roundup_pow_of_two(entries);
184 chp->cq.size_log2 = ilog2(entries);
185
186 if (cxio_create_cq(&rhp->rdev, &chp->cq)) {
187 kfree(chp);
188 return ERR_PTR(-ENOMEM);
189 }
190 chp->rhp = rhp;
191 chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1;
192 spin_lock_init(&chp->lock);
193 atomic_set(&chp->refcnt, 1);
194 init_waitqueue_head(&chp->wait);
195 insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
196
197 if (ucontext) {
198 struct iwch_mm_entry *mm;
199
200 mm = kmalloc(sizeof *mm, GFP_KERNEL);
201 if (!mm) {
202 iwch_destroy_cq(&chp->ibcq);
203 return ERR_PTR(-ENOMEM);
204 }
205 uresp.cqid = chp->cq.cqid;
206 uresp.size_log2 = chp->cq.size_log2;
207 spin_lock(&ucontext->mmap_lock);
208 uresp.key = ucontext->key;
209 ucontext->key += PAGE_SIZE;
210 spin_unlock(&ucontext->mmap_lock);
211 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
212 kfree(mm);
213 iwch_destroy_cq(&chp->ibcq);
214 return ERR_PTR(-EFAULT);
215 }
216 mm->key = uresp.key;
217 mm->addr = virt_to_phys(chp->cq.queue);
218 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
219 sizeof (struct t3_cqe));
220 insert_mmap(ucontext, mm);
221 }
222 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
223 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
224 (unsigned long long) chp->cq.dma_addr);
225 return &chp->ibcq;
226 }
227
228 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
229 {
230 #ifdef notyet
231 struct iwch_cq *chp = to_iwch_cq(cq);
232 struct t3_cq oldcq, newcq;
233 int ret;
234
235 PDBG("%s ib_cq %p cqe %d\n", __FUNCTION__, cq, cqe);
236
237 /* We don't downsize... */
238 if (cqe <= cq->cqe)
239 return 0;
240
241 /* create new t3_cq with new size */
242 cqe = roundup_pow_of_two(cqe+1);
243 newcq.size_log2 = ilog2(cqe);
244
245 /* Dont allow resize to less than the current wce count */
246 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
247 return -ENOMEM;
248 }
249
250 /* Quiesce all QPs using this CQ */
251 ret = iwch_quiesce_qps(chp);
252 if (ret) {
253 return ret;
254 }
255
256 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
257 if (ret) {
258 return ret;
259 }
260
261 /* copy CQEs */
262 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
263 sizeof(struct t3_cqe));
264
265 /* old iwch_qp gets new t3_cq but keeps old cqid */
266 oldcq = chp->cq;
267 chp->cq = newcq;
268 chp->cq.cqid = oldcq.cqid;
269
270 /* resize new t3_cq to update the HW context */
271 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
272 if (ret) {
273 chp->cq = oldcq;
274 return ret;
275 }
276 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
277
278 /* destroy old t3_cq */
279 oldcq.cqid = newcq.cqid;
280 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
281 if (ret) {
282 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
283 __FUNCTION__, ret);
284 }
285
286 /* add user hooks here */
287
288 /* resume qps */
289 ret = iwch_resume_qps(chp);
290 return ret;
291 #else
292 return -ENOSYS;
293 #endif
294 }
295
296 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
297 {
298 struct iwch_dev *rhp;
299 struct iwch_cq *chp;
300 enum t3_cq_opcode cq_op;
301 int err;
302 unsigned long flag;
303 u32 rptr;
304
305 chp = to_iwch_cq(ibcq);
306 rhp = chp->rhp;
307 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
308 cq_op = CQ_ARM_SE;
309 else
310 cq_op = CQ_ARM_AN;
311 if (chp->user_rptr_addr) {
312 if (get_user(rptr, chp->user_rptr_addr))
313 return -EFAULT;
314 spin_lock_irqsave(&chp->lock, flag);
315 chp->cq.rptr = rptr;
316 } else
317 spin_lock_irqsave(&chp->lock, flag);
318 PDBG("%s rptr 0x%x\n", __FUNCTION__, chp->cq.rptr);
319 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
320 spin_unlock_irqrestore(&chp->lock, flag);
321 if (err < 0)
322 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
323 chp->cq.cqid);
324 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
325 err = 0;
326 return err;
327 }
328
329 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
330 {
331 int len = vma->vm_end - vma->vm_start;
332 u32 key = vma->vm_pgoff << PAGE_SHIFT;
333 struct cxio_rdev *rdev_p;
334 int ret = 0;
335 struct iwch_mm_entry *mm;
336 struct iwch_ucontext *ucontext;
337 u64 addr;
338
339 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
340 key, len);
341
342 if (vma->vm_start & (PAGE_SIZE-1)) {
343 return -EINVAL;
344 }
345
346 rdev_p = &(to_iwch_dev(context->device)->rdev);
347 ucontext = to_iwch_ucontext(context);
348
349 mm = remove_mmap(ucontext, key, len);
350 if (!mm)
351 return -EINVAL;
352 addr = mm->addr;
353 kfree(mm);
354
355 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
356 (addr < (rdev_p->rnic_info.udbell_physbase +
357 rdev_p->rnic_info.udbell_len))) {
358
359 /*
360 * Map T3 DB register.
361 */
362 if (vma->vm_flags & VM_READ) {
363 return -EPERM;
364 }
365
366 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
367 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
368 vma->vm_flags &= ~VM_MAYREAD;
369 ret = io_remap_pfn_range(vma, vma->vm_start,
370 addr >> PAGE_SHIFT,
371 len, vma->vm_page_prot);
372 } else {
373
374 /*
375 * Map WQ or CQ contig dma memory...
376 */
377 ret = remap_pfn_range(vma, vma->vm_start,
378 addr >> PAGE_SHIFT,
379 len, vma->vm_page_prot);
380 }
381
382 return ret;
383 }
384
385 static int iwch_deallocate_pd(struct ib_pd *pd)
386 {
387 struct iwch_dev *rhp;
388 struct iwch_pd *php;
389
390 php = to_iwch_pd(pd);
391 rhp = php->rhp;
392 PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
393 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
394 kfree(php);
395 return 0;
396 }
397
398 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
399 struct ib_ucontext *context,
400 struct ib_udata *udata)
401 {
402 struct iwch_pd *php;
403 u32 pdid;
404 struct iwch_dev *rhp;
405
406 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
407 rhp = (struct iwch_dev *) ibdev;
408 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
409 if (!pdid)
410 return ERR_PTR(-EINVAL);
411 php = kzalloc(sizeof(*php), GFP_KERNEL);
412 if (!php) {
413 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
414 return ERR_PTR(-ENOMEM);
415 }
416 php->pdid = pdid;
417 php->rhp = rhp;
418 if (context) {
419 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
420 iwch_deallocate_pd(&php->ibpd);
421 return ERR_PTR(-EFAULT);
422 }
423 }
424 PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
425 return &php->ibpd;
426 }
427
428 static int iwch_dereg_mr(struct ib_mr *ib_mr)
429 {
430 struct iwch_dev *rhp;
431 struct iwch_mr *mhp;
432 u32 mmid;
433
434 PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
435 /* There can be no memory windows */
436 if (atomic_read(&ib_mr->usecnt))
437 return -EINVAL;
438
439 mhp = to_iwch_mr(ib_mr);
440 rhp = mhp->rhp;
441 mmid = mhp->attr.stag >> 8;
442 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
443 mhp->attr.pbl_addr);
444 remove_handle(rhp, &rhp->mmidr, mmid);
445 if (mhp->kva)
446 kfree((void *) (unsigned long) mhp->kva);
447 if (mhp->umem)
448 ib_umem_release(mhp->umem);
449 PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
450 kfree(mhp);
451 return 0;
452 }
453
454 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
455 struct ib_phys_buf *buffer_list,
456 int num_phys_buf,
457 int acc,
458 u64 *iova_start)
459 {
460 __be64 *page_list;
461 int shift;
462 u64 total_size;
463 int npages;
464 struct iwch_dev *rhp;
465 struct iwch_pd *php;
466 struct iwch_mr *mhp;
467 int ret;
468
469 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
470 php = to_iwch_pd(pd);
471 rhp = php->rhp;
472
473 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
474 if (!mhp)
475 return ERR_PTR(-ENOMEM);
476
477 /* First check that we have enough alignment */
478 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
479 ret = -EINVAL;
480 goto err;
481 }
482
483 if (num_phys_buf > 1 &&
484 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
485 ret = -EINVAL;
486 goto err;
487 }
488
489 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
490 &total_size, &npages, &shift, &page_list);
491 if (ret)
492 goto err;
493
494 mhp->rhp = rhp;
495 mhp->attr.pdid = php->pdid;
496 mhp->attr.zbva = 0;
497
498 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
499 mhp->attr.va_fbo = *iova_start;
500 mhp->attr.page_size = shift - 12;
501
502 mhp->attr.len = (u32) total_size;
503 mhp->attr.pbl_size = npages;
504 ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
505 kfree(page_list);
506 if (ret) {
507 goto err;
508 }
509 return &mhp->ibmr;
510 err:
511 kfree(mhp);
512 return ERR_PTR(ret);
513
514 }
515
516 static int iwch_reregister_phys_mem(struct ib_mr *mr,
517 int mr_rereg_mask,
518 struct ib_pd *pd,
519 struct ib_phys_buf *buffer_list,
520 int num_phys_buf,
521 int acc, u64 * iova_start)
522 {
523
524 struct iwch_mr mh, *mhp;
525 struct iwch_pd *php;
526 struct iwch_dev *rhp;
527 __be64 *page_list = NULL;
528 int shift = 0;
529 u64 total_size;
530 int npages;
531 int ret;
532
533 PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
534
535 /* There can be no memory windows */
536 if (atomic_read(&mr->usecnt))
537 return -EINVAL;
538
539 mhp = to_iwch_mr(mr);
540 rhp = mhp->rhp;
541 php = to_iwch_pd(mr->pd);
542
543 /* make sure we are on the same adapter */
544 if (rhp != php->rhp)
545 return -EINVAL;
546
547 memcpy(&mh, mhp, sizeof *mhp);
548
549 if (mr_rereg_mask & IB_MR_REREG_PD)
550 php = to_iwch_pd(pd);
551 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
552 mh.attr.perms = iwch_ib_to_tpt_access(acc);
553 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
554 ret = build_phys_page_list(buffer_list, num_phys_buf,
555 iova_start,
556 &total_size, &npages,
557 &shift, &page_list);
558 if (ret)
559 return ret;
560 }
561
562 ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
563 kfree(page_list);
564 if (ret) {
565 return ret;
566 }
567 if (mr_rereg_mask & IB_MR_REREG_PD)
568 mhp->attr.pdid = php->pdid;
569 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
570 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
571 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
572 mhp->attr.zbva = 0;
573 mhp->attr.va_fbo = *iova_start;
574 mhp->attr.page_size = shift - 12;
575 mhp->attr.len = (u32) total_size;
576 mhp->attr.pbl_size = npages;
577 }
578
579 return 0;
580 }
581
582
583 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
584 u64 virt, int acc, struct ib_udata *udata)
585 {
586 __be64 *pages;
587 int shift, n, len;
588 int i, j, k;
589 int err = 0;
590 struct ib_umem_chunk *chunk;
591 struct iwch_dev *rhp;
592 struct iwch_pd *php;
593 struct iwch_mr *mhp;
594 struct iwch_reg_user_mr_resp uresp;
595
596 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
597
598 php = to_iwch_pd(pd);
599 rhp = php->rhp;
600 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
601 if (!mhp)
602 return ERR_PTR(-ENOMEM);
603
604 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc);
605 if (IS_ERR(mhp->umem)) {
606 err = PTR_ERR(mhp->umem);
607 kfree(mhp);
608 return ERR_PTR(err);
609 }
610
611 shift = ffs(mhp->umem->page_size) - 1;
612
613 n = 0;
614 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
615 n += chunk->nents;
616
617 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
618 if (!pages) {
619 err = -ENOMEM;
620 goto err;
621 }
622
623 i = n = 0;
624
625 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
626 for (j = 0; j < chunk->nmap; ++j) {
627 len = sg_dma_len(&chunk->page_list[j]) >> shift;
628 for (k = 0; k < len; ++k) {
629 pages[i++] = cpu_to_be64(sg_dma_address(
630 &chunk->page_list[j]) +
631 mhp->umem->page_size * k);
632 }
633 }
634
635 mhp->rhp = rhp;
636 mhp->attr.pdid = php->pdid;
637 mhp->attr.zbva = 0;
638 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
639 mhp->attr.va_fbo = virt;
640 mhp->attr.page_size = shift - 12;
641 mhp->attr.len = (u32) length;
642 mhp->attr.pbl_size = i;
643 err = iwch_register_mem(rhp, php, mhp, shift, pages);
644 kfree(pages);
645 if (err)
646 goto err;
647
648 if (udata && t3b_device(rhp)) {
649 uresp.pbl_addr = (mhp->attr.pbl_addr -
650 rhp->rdev.rnic_info.pbl_base) >> 3;
651 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
652 uresp.pbl_addr);
653
654 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
655 iwch_dereg_mr(&mhp->ibmr);
656 err = -EFAULT;
657 goto err;
658 }
659 }
660
661 return &mhp->ibmr;
662
663 err:
664 ib_umem_release(mhp->umem);
665 kfree(mhp);
666 return ERR_PTR(err);
667 }
668
669 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
670 {
671 struct ib_phys_buf bl;
672 u64 kva;
673 struct ib_mr *ibmr;
674
675 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
676
677 /*
678 * T3 only supports 32 bits of size.
679 */
680 bl.size = 0xffffffff;
681 bl.addr = 0;
682 kva = 0;
683 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
684 return ibmr;
685 }
686
687 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
688 {
689 struct iwch_dev *rhp;
690 struct iwch_pd *php;
691 struct iwch_mw *mhp;
692 u32 mmid;
693 u32 stag = 0;
694 int ret;
695
696 php = to_iwch_pd(pd);
697 rhp = php->rhp;
698 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
699 if (!mhp)
700 return ERR_PTR(-ENOMEM);
701 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
702 if (ret) {
703 kfree(mhp);
704 return ERR_PTR(ret);
705 }
706 mhp->rhp = rhp;
707 mhp->attr.pdid = php->pdid;
708 mhp->attr.type = TPT_MW;
709 mhp->attr.stag = stag;
710 mmid = (stag) >> 8;
711 insert_handle(rhp, &rhp->mmidr, mhp, mmid);
712 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
713 return &(mhp->ibmw);
714 }
715
716 static int iwch_dealloc_mw(struct ib_mw *mw)
717 {
718 struct iwch_dev *rhp;
719 struct iwch_mw *mhp;
720 u32 mmid;
721
722 mhp = to_iwch_mw(mw);
723 rhp = mhp->rhp;
724 mmid = (mw->rkey) >> 8;
725 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
726 remove_handle(rhp, &rhp->mmidr, mmid);
727 kfree(mhp);
728 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
729 return 0;
730 }
731
732 static int iwch_destroy_qp(struct ib_qp *ib_qp)
733 {
734 struct iwch_dev *rhp;
735 struct iwch_qp *qhp;
736 struct iwch_qp_attributes attrs;
737 struct iwch_ucontext *ucontext;
738
739 qhp = to_iwch_qp(ib_qp);
740 rhp = qhp->rhp;
741
742 attrs.next_state = IWCH_QP_STATE_ERROR;
743 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
744 wait_event(qhp->wait, !qhp->ep);
745
746 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
747
748 atomic_dec(&qhp->refcnt);
749 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
750
751 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
752 : NULL;
753 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
754 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
755
756 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
757 ib_qp, qhp->wq.qpid, qhp);
758 kfree(qhp);
759 return 0;
760 }
761
762 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
763 struct ib_qp_init_attr *attrs,
764 struct ib_udata *udata)
765 {
766 struct iwch_dev *rhp;
767 struct iwch_qp *qhp;
768 struct iwch_pd *php;
769 struct iwch_cq *schp;
770 struct iwch_cq *rchp;
771 struct iwch_create_qp_resp uresp;
772 int wqsize, sqsize, rqsize;
773 struct iwch_ucontext *ucontext;
774
775 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
776 if (attrs->qp_type != IB_QPT_RC)
777 return ERR_PTR(-EINVAL);
778 php = to_iwch_pd(pd);
779 rhp = php->rhp;
780 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
781 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
782 if (!schp || !rchp)
783 return ERR_PTR(-EINVAL);
784
785 /* The RQT size must be # of entries + 1 rounded up to a power of two */
786 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
787 if (rqsize == attrs->cap.max_recv_wr)
788 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
789
790 /* T3 doesn't support RQT depth < 16 */
791 if (rqsize < 16)
792 rqsize = 16;
793
794 if (rqsize > T3_MAX_RQ_SIZE)
795 return ERR_PTR(-EINVAL);
796
797 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
798 return ERR_PTR(-EINVAL);
799
800 /*
801 * NOTE: The SQ and total WQ sizes don't need to be
802 * a power of two. However, all the code assumes
803 * they are. EG: Q_FREECNT() and friends.
804 */
805 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
806 wqsize = roundup_pow_of_two(rqsize + sqsize);
807 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
808 wqsize, sqsize, rqsize);
809 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
810 if (!qhp)
811 return ERR_PTR(-ENOMEM);
812 qhp->wq.size_log2 = ilog2(wqsize);
813 qhp->wq.rq_size_log2 = ilog2(rqsize);
814 qhp->wq.sq_size_log2 = ilog2(sqsize);
815 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
816 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
817 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
818 kfree(qhp);
819 return ERR_PTR(-ENOMEM);
820 }
821 attrs->cap.max_recv_wr = rqsize - 1;
822 attrs->cap.max_send_wr = sqsize;
823 qhp->rhp = rhp;
824 qhp->attr.pd = php->pdid;
825 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
826 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
827 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
828 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
829 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
830 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
831 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
832 qhp->attr.state = IWCH_QP_STATE_IDLE;
833 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
834
835 /*
836 * XXX - These don't get passed in from the openib user
837 * at create time. The CM sets them via a QP modify.
838 * Need to fix... I think the CM should
839 */
840 qhp->attr.enable_rdma_read = 1;
841 qhp->attr.enable_rdma_write = 1;
842 qhp->attr.enable_bind = 1;
843 qhp->attr.max_ord = 1;
844 qhp->attr.max_ird = 1;
845
846 spin_lock_init(&qhp->lock);
847 init_waitqueue_head(&qhp->wait);
848 atomic_set(&qhp->refcnt, 1);
849 insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
850
851 if (udata) {
852
853 struct iwch_mm_entry *mm1, *mm2;
854
855 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
856 if (!mm1) {
857 iwch_destroy_qp(&qhp->ibqp);
858 return ERR_PTR(-ENOMEM);
859 }
860
861 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
862 if (!mm2) {
863 kfree(mm1);
864 iwch_destroy_qp(&qhp->ibqp);
865 return ERR_PTR(-ENOMEM);
866 }
867
868 uresp.qpid = qhp->wq.qpid;
869 uresp.size_log2 = qhp->wq.size_log2;
870 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
871 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
872 spin_lock(&ucontext->mmap_lock);
873 uresp.key = ucontext->key;
874 ucontext->key += PAGE_SIZE;
875 uresp.db_key = ucontext->key;
876 ucontext->key += PAGE_SIZE;
877 spin_unlock(&ucontext->mmap_lock);
878 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
879 kfree(mm1);
880 kfree(mm2);
881 iwch_destroy_qp(&qhp->ibqp);
882 return ERR_PTR(-EFAULT);
883 }
884 mm1->key = uresp.key;
885 mm1->addr = virt_to_phys(qhp->wq.queue);
886 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
887 insert_mmap(ucontext, mm1);
888 mm2->key = uresp.db_key;
889 mm2->addr = qhp->wq.udb & PAGE_MASK;
890 mm2->len = PAGE_SIZE;
891 insert_mmap(ucontext, mm2);
892 }
893 qhp->ibqp.qp_num = qhp->wq.qpid;
894 init_timer(&(qhp->timer));
895 PDBG("%s sq_num_entries %d, rq_num_entries %d "
896 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
897 __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
898 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
899 1 << qhp->wq.size_log2);
900 return &qhp->ibqp;
901 }
902
903 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
904 int attr_mask, struct ib_udata *udata)
905 {
906 struct iwch_dev *rhp;
907 struct iwch_qp *qhp;
908 enum iwch_qp_attr_mask mask = 0;
909 struct iwch_qp_attributes attrs;
910
911 PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
912
913 /* iwarp does not support the RTR state */
914 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
915 attr_mask &= ~IB_QP_STATE;
916
917 /* Make sure we still have something left to do */
918 if (!attr_mask)
919 return 0;
920
921 memset(&attrs, 0, sizeof attrs);
922 qhp = to_iwch_qp(ibqp);
923 rhp = qhp->rhp;
924
925 attrs.next_state = iwch_convert_state(attr->qp_state);
926 attrs.enable_rdma_read = (attr->qp_access_flags &
927 IB_ACCESS_REMOTE_READ) ? 1 : 0;
928 attrs.enable_rdma_write = (attr->qp_access_flags &
929 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
930 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
931
932
933 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
934 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
935 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
936 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
937 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
938
939 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
940 }
941
942 void iwch_qp_add_ref(struct ib_qp *qp)
943 {
944 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
945 atomic_inc(&(to_iwch_qp(qp)->refcnt));
946 }
947
948 void iwch_qp_rem_ref(struct ib_qp *qp)
949 {
950 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
951 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
952 wake_up(&(to_iwch_qp(qp)->wait));
953 }
954
955 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
956 {
957 PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
958 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
959 }
960
961
962 static int iwch_query_pkey(struct ib_device *ibdev,
963 u8 port, u16 index, u16 * pkey)
964 {
965 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
966 *pkey = 0;
967 return 0;
968 }
969
970 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
971 int index, union ib_gid *gid)
972 {
973 struct iwch_dev *dev;
974
975 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
976 __FUNCTION__, ibdev, port, index, gid);
977 dev = to_iwch_dev(ibdev);
978 BUG_ON(port == 0 || port > 2);
979 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
980 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
981 return 0;
982 }
983
984 static int iwch_query_device(struct ib_device *ibdev,
985 struct ib_device_attr *props)
986 {
987
988 struct iwch_dev *dev;
989 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
990
991 dev = to_iwch_dev(ibdev);
992 memset(props, 0, sizeof *props);
993 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
994 props->device_cap_flags = dev->device_cap_flags;
995 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
996 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
997 props->max_mr_size = ~0ull;
998 props->max_qp = dev->attr.max_qps;
999 props->max_qp_wr = dev->attr.max_wrs;
1000 props->max_sge = dev->attr.max_sge_per_wr;
1001 props->max_sge_rd = 1;
1002 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1003 props->max_cq = dev->attr.max_cqs;
1004 props->max_cqe = dev->attr.max_cqes_per_cq;
1005 props->max_mr = dev->attr.max_mem_regs;
1006 props->max_pd = dev->attr.max_pds;
1007 props->local_ca_ack_delay = 0;
1008
1009 return 0;
1010 }
1011
1012 static int iwch_query_port(struct ib_device *ibdev,
1013 u8 port, struct ib_port_attr *props)
1014 {
1015 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1016 props->max_mtu = IB_MTU_4096;
1017 props->lid = 0;
1018 props->lmc = 0;
1019 props->sm_lid = 0;
1020 props->sm_sl = 0;
1021 props->state = IB_PORT_ACTIVE;
1022 props->phys_state = 0;
1023 props->port_cap_flags =
1024 IB_PORT_CM_SUP |
1025 IB_PORT_SNMP_TUNNEL_SUP |
1026 IB_PORT_REINIT_SUP |
1027 IB_PORT_DEVICE_MGMT_SUP |
1028 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1029 props->gid_tbl_len = 1;
1030 props->pkey_tbl_len = 1;
1031 props->qkey_viol_cntr = 0;
1032 props->active_width = 2;
1033 props->active_speed = 2;
1034 props->max_msg_sz = -1;
1035
1036 return 0;
1037 }
1038
1039 static ssize_t show_rev(struct class_device *cdev, char *buf)
1040 {
1041 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1042 ibdev.class_dev);
1043 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1044 return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1045 }
1046
1047 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1048 {
1049 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1050 ibdev.class_dev);
1051 struct ethtool_drvinfo info;
1052 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1053
1054 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1055 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1056 return sprintf(buf, "%s\n", info.fw_version);
1057 }
1058
1059 static ssize_t show_hca(struct class_device *cdev, char *buf)
1060 {
1061 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1062 ibdev.class_dev);
1063 struct ethtool_drvinfo info;
1064 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1065
1066 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1067 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1068 return sprintf(buf, "%s\n", info.driver);
1069 }
1070
1071 static ssize_t show_board(struct class_device *cdev, char *buf)
1072 {
1073 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1074 ibdev.class_dev);
1075 PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1076 return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1077 dev->rdev.rnic_info.pdev->device);
1078 }
1079
1080 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1081 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1082 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1083 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1084
1085 static struct class_device_attribute *iwch_class_attributes[] = {
1086 &class_device_attr_hw_rev,
1087 &class_device_attr_fw_ver,
1088 &class_device_attr_hca_type,
1089 &class_device_attr_board_id
1090 };
1091
1092 int iwch_register_device(struct iwch_dev *dev)
1093 {
1094 int ret;
1095 int i;
1096
1097 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1098 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1099 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1100 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1101 dev->ibdev.owner = THIS_MODULE;
1102 dev->device_cap_flags =
1103 (IB_DEVICE_ZERO_STAG |
1104 IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1105
1106 dev->ibdev.uverbs_cmd_mask =
1107 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1108 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1109 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1110 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1111 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1112 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1113 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1114 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1115 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1116 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1117 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1118 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1119 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1120 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1121 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1122 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1123 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1124 dev->ibdev.node_type = RDMA_NODE_RNIC;
1125 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1126 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1127 dev->ibdev.num_comp_vectors = 1;
1128 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1129 dev->ibdev.query_device = iwch_query_device;
1130 dev->ibdev.query_port = iwch_query_port;
1131 dev->ibdev.modify_port = iwch_modify_port;
1132 dev->ibdev.query_pkey = iwch_query_pkey;
1133 dev->ibdev.query_gid = iwch_query_gid;
1134 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1135 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1136 dev->ibdev.mmap = iwch_mmap;
1137 dev->ibdev.alloc_pd = iwch_allocate_pd;
1138 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1139 dev->ibdev.create_ah = iwch_ah_create;
1140 dev->ibdev.destroy_ah = iwch_ah_destroy;
1141 dev->ibdev.create_qp = iwch_create_qp;
1142 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1143 dev->ibdev.destroy_qp = iwch_destroy_qp;
1144 dev->ibdev.create_cq = iwch_create_cq;
1145 dev->ibdev.destroy_cq = iwch_destroy_cq;
1146 dev->ibdev.resize_cq = iwch_resize_cq;
1147 dev->ibdev.poll_cq = iwch_poll_cq;
1148 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1149 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1150 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1151 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1152 dev->ibdev.dereg_mr = iwch_dereg_mr;
1153 dev->ibdev.alloc_mw = iwch_alloc_mw;
1154 dev->ibdev.bind_mw = iwch_bind_mw;
1155 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1156
1157 dev->ibdev.attach_mcast = iwch_multicast_attach;
1158 dev->ibdev.detach_mcast = iwch_multicast_detach;
1159 dev->ibdev.process_mad = iwch_process_mad;
1160
1161 dev->ibdev.req_notify_cq = iwch_arm_cq;
1162 dev->ibdev.post_send = iwch_post_send;
1163 dev->ibdev.post_recv = iwch_post_receive;
1164
1165
1166 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1167 if (!dev->ibdev.iwcm)
1168 return -ENOMEM;
1169
1170 dev->ibdev.iwcm->connect = iwch_connect;
1171 dev->ibdev.iwcm->accept = iwch_accept_cr;
1172 dev->ibdev.iwcm->reject = iwch_reject_cr;
1173 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1174 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1175 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1176 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1177 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1178
1179 ret = ib_register_device(&dev->ibdev);
1180 if (ret)
1181 goto bail1;
1182
1183 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1184 ret = class_device_create_file(&dev->ibdev.class_dev,
1185 iwch_class_attributes[i]);
1186 if (ret) {
1187 goto bail2;
1188 }
1189 }
1190 return 0;
1191 bail2:
1192 ib_unregister_device(&dev->ibdev);
1193 bail1:
1194 return ret;
1195 }
1196
1197 void iwch_unregister_device(struct iwch_dev *dev)
1198 {
1199 int i;
1200
1201 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1202 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1203 class_device_remove_file(&dev->ibdev.class_dev,
1204 iwch_class_attributes[i]);
1205 ib_unregister_device(&dev->ibdev);
1206 return;
1207 }
Mirror for ia64_pv_ops.git