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RDMA/cxgb3: Start ep timer on a MPA reject
[deliverable/linux.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
CommitLineData
b038ced7
SW		 1/*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
b038ced7
SW		 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
58static 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
65static 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
71static int iwch_ah_destroy(struct ib_ah *ah)
72{
73 return -ENOSYS;
74}
75
76static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
77{
78 return -ENOSYS;
79}
80
81static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
82{
83 return -ENOSYS;
84}
85
86static 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
96static 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
110static 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
126static 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
142static 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
227static 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
295static 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
326static 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
335 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
336 key, len);
337
338 if (vma->vm_start & (PAGE_SIZE-1)) {
339 return -EINVAL;
340 }
341
342 rdev_p = &(to_iwch_dev(context->device)->rdev);
343 ucontext = to_iwch_ucontext(context);
344
345 mm = remove_mmap(ucontext, key, len);
346 if (!mm)
347 return -EINVAL;
348 kfree(mm);
349
350 if ((mm->addr >= rdev_p->rnic_info.udbell_physbase) &&
351 (mm->addr < (rdev_p->rnic_info.udbell_physbase +
352 rdev_p->rnic_info.udbell_len))) {
353
354 /*
355 * Map T3 DB register.
356 */
357 if (vma->vm_flags & VM_READ) {
358 return -EPERM;
359 }
360
361 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
362 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
363 vma->vm_flags &= ~VM_MAYREAD;
364 ret = io_remap_pfn_range(vma, vma->vm_start,
365 mm->addr >> PAGE_SHIFT,
366 len, vma->vm_page_prot);
367 } else {
368
369 /*
370 * Map WQ or CQ contig dma memory...
371 */
372 ret = remap_pfn_range(vma, vma->vm_start,
373 mm->addr >> PAGE_SHIFT,
374 len, vma->vm_page_prot);
375 }
376
377 return ret;
378}
379
380static int iwch_deallocate_pd(struct ib_pd *pd)
381{
382 struct iwch_dev *rhp;
383 struct iwch_pd *php;
384
385 php = to_iwch_pd(pd);
386 rhp = php->rhp;
387 PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
388 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
389 kfree(php);
390 return 0;
391}
392
393static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
394 struct ib_ucontext *context,
395 struct ib_udata *udata)
396{
397 struct iwch_pd *php;
398 u32 pdid;
399 struct iwch_dev *rhp;
400
401 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
402 rhp = (struct iwch_dev *) ibdev;
403 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
404 if (!pdid)
405 return ERR_PTR(-EINVAL);
406 php = kzalloc(sizeof(*php), GFP_KERNEL);
407 if (!php) {
408 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
409 return ERR_PTR(-ENOMEM);
410 }
411 php->pdid = pdid;
412 php->rhp = rhp;
413 if (context) {
414 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
415 iwch_deallocate_pd(&php->ibpd);
416 return ERR_PTR(-EFAULT);
417 }
418 }
419 PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
420 return &php->ibpd;
421}
422
423static int iwch_dereg_mr(struct ib_mr *ib_mr)
424{
425 struct iwch_dev *rhp;
426 struct iwch_mr *mhp;
427 u32 mmid;
428
429 PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
430 /* There can be no memory windows */
431 if (atomic_read(&ib_mr->usecnt))
432 return -EINVAL;
433
434 mhp = to_iwch_mr(ib_mr);
435 rhp = mhp->rhp;
436 mmid = mhp->attr.stag >> 8;
437 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
438 mhp->attr.pbl_addr);
439 remove_handle(rhp, &rhp->mmidr, mmid);
440 if (mhp->kva)
441 kfree((void *) (unsigned long) mhp->kva);
442 PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
443 kfree(mhp);
444 return 0;
445}
446
447static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
448 struct ib_phys_buf *buffer_list,
449 int num_phys_buf,
450 int acc,
451 u64 *iova_start)
452{
453 __be64 *page_list;
454 int shift;
455 u64 total_size;
456 int npages;
457 struct iwch_dev *rhp;
458 struct iwch_pd *php;
459 struct iwch_mr *mhp;
460 int ret;
461
462 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
463 php = to_iwch_pd(pd);
464 rhp = php->rhp;
465
466 acc = iwch_convert_access(acc);
467
468
469 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
470 if (!mhp)
471 return ERR_PTR(-ENOMEM);
472
473 /* First check that we have enough alignment */
474 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
475 ret = -EINVAL;
476 goto err;
477 }
478
479 if (num_phys_buf > 1 &&
480 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
481 ret = -EINVAL;
482 goto err;
483 }
484
485 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
486 &total_size, &npages, &shift, &page_list);
487 if (ret)
488 goto err;
489
490 mhp->rhp = rhp;
491 mhp->attr.pdid = php->pdid;
492 mhp->attr.zbva = 0;
493
494 /* NOTE: TPT perms are backwards from BIND WR perms! */
495 mhp->attr.perms = (acc & 0x1) << 3;
496 mhp->attr.perms |= (acc & 0x2) << 1;
497 mhp->attr.perms |= (acc & 0x4) >> 1;
498 mhp->attr.perms |= (acc & 0x8) >> 3;
499
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;
511err:
512 kfree(mhp);
513 return ERR_PTR(ret);
514
515}
516
517static 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 int new_acc;
529 __be64 *page_list = NULL;
530 int shift = 0;
531 u64 total_size;
532 int npages;
533 int ret;
534
535 PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
536
537 /* There can be no memory windows */
538 if (atomic_read(&mr->usecnt))
539 return -EINVAL;
540
541 mhp = to_iwch_mr(mr);
542 rhp = mhp->rhp;
543 php = to_iwch_pd(mr->pd);
544
545 /* make sure we are on the same adapter */
546 if (rhp != php->rhp)
547 return -EINVAL;
548
549 new_acc = mhp->attr.perms;
550
551 memcpy(&mh, mhp, sizeof *mhp);
552
553 if (mr_rereg_mask & IB_MR_REREG_PD)
554 php = to_iwch_pd(pd);
555 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
556 mh.attr.perms = iwch_convert_access(acc);
557 if (mr_rereg_mask & IB_MR_REREG_TRANS)
558 ret = build_phys_page_list(buffer_list, num_phys_buf,
559 iova_start,
560 &total_size, &npages,
561 &shift, &page_list);
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 = 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
584static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
585 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", __FUNCTION__, pd);
598 shift = ffs(region->page_size) - 1;
599
600 php = to_iwch_pd(pd);
601 rhp = php->rhp;
602 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
603 if (!mhp)
604 return ERR_PTR(-ENOMEM);
605
606 n = 0;
607 list_for_each_entry(chunk, &region->chunk_list, list)
608 n += chunk->nents;
609
610 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
611 if (!pages) {
612 err = -ENOMEM;
613 goto err;
614 }
615
616 acc = iwch_convert_access(acc);
617
618 i = n = 0;
619
620 list_for_each_entry(chunk, &region->chunk_list, list)
621 for (j = 0; j < chunk->nmap; ++j) {
622 len = sg_dma_len(&chunk->page_list[j]) >> shift;
623 for (k = 0; k < len; ++k) {
624 pages[i++] = cpu_to_be64(sg_dma_address(
625 &chunk->page_list[j]) +
626 region->page_size * k);
627 }
628 }
629
630 mhp->rhp = rhp;
631 mhp->attr.pdid = php->pdid;
632 mhp->attr.zbva = 0;
633 mhp->attr.perms = (acc & 0x1) << 3;
634 mhp->attr.perms |= (acc & 0x2) << 1;
635 mhp->attr.perms |= (acc & 0x4) >> 1;
636 mhp->attr.perms |= (acc & 0x8) >> 3;
637 mhp->attr.va_fbo = region->virt_base;
638 mhp->attr.page_size = shift - 12;
639 mhp->attr.len = (u32) region->length;
640 mhp->attr.pbl_size = i;
641 err = iwch_register_mem(rhp, php, mhp, shift, pages);
642 kfree(pages);
643 if (err)
644 goto err;
645
646 if (udata && t3b_device(rhp)) {
647 uresp.pbl_addr = (mhp->attr.pbl_addr -
648 rhp->rdev.rnic_info.pbl_base) >> 3;
649 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
650 uresp.pbl_addr);
651
652 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
653 iwch_dereg_mr(&mhp->ibmr);
654 err = -EFAULT;
655 goto err;
656 }
657 }
658
659 return &mhp->ibmr;
660
661err:
662 kfree(mhp);
663 return ERR_PTR(err);
664}
665
666static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
667{
668 struct ib_phys_buf bl;
669 u64 kva;
670 struct ib_mr *ibmr;
671
672 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
673
674 /*
675 * T3 only supports 32 bits of size.
676 */
677 bl.size = 0xffffffff;
678 bl.addr = 0;
679 kva = 0;
680 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
681 return ibmr;
682}
683
684static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
685{
686 struct iwch_dev *rhp;
687 struct iwch_pd *php;
688 struct iwch_mw *mhp;
689 u32 mmid;
690 u32 stag = 0;
691 int ret;
692
693 php = to_iwch_pd(pd);
694 rhp = php->rhp;
695 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
696 if (!mhp)
697 return ERR_PTR(-ENOMEM);
698 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
699 if (ret) {
700 kfree(mhp);
701 return ERR_PTR(ret);
702 }
703 mhp->rhp = rhp;
704 mhp->attr.pdid = php->pdid;
705 mhp->attr.type = TPT_MW;
706 mhp->attr.stag = stag;
707 mmid = (stag) >> 8;
708 insert_handle(rhp, &rhp->mmidr, mhp, mmid);
709 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
710 return &(mhp->ibmw);
711}
712
713static int iwch_dealloc_mw(struct ib_mw *mw)
714{
715 struct iwch_dev *rhp;
716 struct iwch_mw *mhp;
717 u32 mmid;
718
719 mhp = to_iwch_mw(mw);
720 rhp = mhp->rhp;
721 mmid = (mw->rkey) >> 8;
722 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
723 remove_handle(rhp, &rhp->mmidr, mmid);
724 kfree(mhp);
725 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
726 return 0;
727}
728
729static int iwch_destroy_qp(struct ib_qp *ib_qp)
730{
731 struct iwch_dev *rhp;
732 struct iwch_qp *qhp;
733 struct iwch_qp_attributes attrs;
734 struct iwch_ucontext *ucontext;
735
736 qhp = to_iwch_qp(ib_qp);
737 rhp = qhp->rhp;
738
739 if (qhp->attr.state == IWCH_QP_STATE_RTS) {
740 attrs.next_state = IWCH_QP_STATE_ERROR;
741 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
742 }
743 wait_event(qhp->wait, !qhp->ep);
744
745 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
746
747 atomic_dec(&qhp->refcnt);
748 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
749
750 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
751 : NULL;
752 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
753 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
754
755 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
756 ib_qp, qhp->wq.qpid, qhp);
757 kfree(qhp);
758 return 0;
759}
760
761static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
762 struct ib_qp_init_attr *attrs,
763 struct ib_udata *udata)
764{
765 struct iwch_dev *rhp;
766 struct iwch_qp *qhp;
767 struct iwch_pd *php;
768 struct iwch_cq *schp;
769 struct iwch_cq *rchp;
770 struct iwch_create_qp_resp uresp;
771 int wqsize, sqsize, rqsize;
772 struct iwch_ucontext *ucontext;
773
774 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
775 if (attrs->qp_type != IB_QPT_RC)
776 return ERR_PTR(-EINVAL);
777 php = to_iwch_pd(pd);
778 rhp = php->rhp;
779 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
780 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
781 if (!schp || !rchp)
782 return ERR_PTR(-EINVAL);
783
784 /* The RQT size must be # of entries + 1 rounded up to a power of two */
785 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
786 if (rqsize == attrs->cap.max_recv_wr)
787 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
788
789 /* T3 doesn't support RQT depth < 16 */
790 if (rqsize < 16)
791 rqsize = 16;
792
793 if (rqsize > T3_MAX_RQ_SIZE)
794 return ERR_PTR(-EINVAL);
795
796 /*
797 * NOTE: The SQ and total WQ sizes don't need to be
798 * a power of two. However, all the code assumes
799 * they are. EG: Q_FREECNT() and friends.
800 */
801 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
802 wqsize = roundup_pow_of_two(rqsize + sqsize);
803 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
804 wqsize, sqsize, rqsize);
805 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
806 if (!qhp)
807 return ERR_PTR(-ENOMEM);
808 qhp->wq.size_log2 = ilog2(wqsize);
809 qhp->wq.rq_size_log2 = ilog2(rqsize);
810 qhp->wq.sq_size_log2 = ilog2(sqsize);
811 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
812 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
813 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
814 kfree(qhp);
815 return ERR_PTR(-ENOMEM);
816 }
817 attrs->cap.max_recv_wr = rqsize - 1;
818 attrs->cap.max_send_wr = sqsize;
819 qhp->rhp = rhp;
820 qhp->attr.pd = php->pdid;
821 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
822 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
823 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
824 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
825 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
826 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
827 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
828 qhp->attr.state = IWCH_QP_STATE_IDLE;
829 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
830
831 /*
832 * XXX - These don't get passed in from the openib user
833 * at create time. The CM sets them via a QP modify.
834 * Need to fix... I think the CM should
835 */
836 qhp->attr.enable_rdma_read = 1;
837 qhp->attr.enable_rdma_write = 1;
838 qhp->attr.enable_bind = 1;
839 qhp->attr.max_ord = 1;
840 qhp->attr.max_ird = 1;
841
842 spin_lock_init(&qhp->lock);
843 init_waitqueue_head(&qhp->wait);
844 atomic_set(&qhp->refcnt, 1);
845 insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
846
847 if (udata) {
848
849 struct iwch_mm_entry *mm1, *mm2;
850
851 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
852 if (!mm1) {
853 iwch_destroy_qp(&qhp->ibqp);
854 return ERR_PTR(-ENOMEM);
855 }
856
857 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
858 if (!mm2) {
859 kfree(mm1);
860 iwch_destroy_qp(&qhp->ibqp);
861 return ERR_PTR(-ENOMEM);
862 }
863
864 uresp.qpid = qhp->wq.qpid;
865 uresp.size_log2 = qhp->wq.size_log2;
866 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
867 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
868 spin_lock(&ucontext->mmap_lock);
869 uresp.key = ucontext->key;
870 ucontext->key += PAGE_SIZE;
871 uresp.db_key = ucontext->key;
872 ucontext->key += PAGE_SIZE;
873 spin_unlock(&ucontext->mmap_lock);
874 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
875 kfree(mm1);
876 kfree(mm2);
877 iwch_destroy_qp(&qhp->ibqp);
878 return ERR_PTR(-EFAULT);
879 }
880 mm1->key = uresp.key;
881 mm1->addr = virt_to_phys(qhp->wq.queue);
882 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
883 insert_mmap(ucontext, mm1);
884 mm2->key = uresp.db_key;
885 mm2->addr = qhp->wq.udb & PAGE_MASK;
886 mm2->len = PAGE_SIZE;
887 insert_mmap(ucontext, mm2);
888 }
889 qhp->ibqp.qp_num = qhp->wq.qpid;
890 init_timer(&(qhp->timer));
891 PDBG("%s sq_num_entries %d, rq_num_entries %d "
892 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
893 __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
894 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
895 1 << qhp->wq.size_log2);
896 return &qhp->ibqp;
897}
898
899static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
900 int attr_mask, struct ib_udata *udata)
901{
902 struct iwch_dev *rhp;
903 struct iwch_qp *qhp;
904 enum iwch_qp_attr_mask mask = 0;
905 struct iwch_qp_attributes attrs;
906
907 PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
908
909 /* iwarp does not support the RTR state */
910 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
911 attr_mask &= ~IB_QP_STATE;
912
913 /* Make sure we still have something left to do */
914 if (!attr_mask)
915 return 0;
916
917 memset(&attrs, 0, sizeof attrs);
918 qhp = to_iwch_qp(ibqp);
919 rhp = qhp->rhp;
920
921 attrs.next_state = iwch_convert_state(attr->qp_state);
922 attrs.enable_rdma_read = (attr->qp_access_flags &
923 IB_ACCESS_REMOTE_READ) ? 1 : 0;
924 attrs.enable_rdma_write = (attr->qp_access_flags &
925 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
926 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
927
928
929 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
930 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
931 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
932 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
933 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
934
935 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
936}
937
938void iwch_qp_add_ref(struct ib_qp *qp)
939{
940 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
941 atomic_inc(&(to_iwch_qp(qp)->refcnt));
942}
943
944void iwch_qp_rem_ref(struct ib_qp *qp)
945{
946 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
947 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
948 wake_up(&(to_iwch_qp(qp)->wait));
949}
950
2b540355 951static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
b038ced7
SW		 952{
953 PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
954 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
955}
956
957
958static int iwch_query_pkey(struct ib_device *ibdev,
959 u8 port, u16 index, u16 * pkey)
960{
961 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
962 *pkey = 0;
963 return 0;
964}
965
966static int iwch_query_gid(struct ib_device *ibdev, u8 port,
967 int index, union ib_gid *gid)
968{
969 struct iwch_dev *dev;
970
971 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
972 __FUNCTION__, ibdev, port, index, gid);
973 dev = to_iwch_dev(ibdev);
974 BUG_ON(port == 0 || port > 2);
975 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
976 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
977 return 0;
978}
979
980static int iwch_query_device(struct ib_device *ibdev,
981 struct ib_device_attr *props)
982{
983
984 struct iwch_dev *dev;
985 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
986
987 dev = to_iwch_dev(ibdev);
988 memset(props, 0, sizeof *props);
989 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
990 props->device_cap_flags = dev->device_cap_flags;
991 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
992 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
993 props->max_mr_size = ~0ull;
994 props->max_qp = dev->attr.max_qps;
995 props->max_qp_wr = dev->attr.max_wrs;
996 props->max_sge = dev->attr.max_sge_per_wr;
997 props->max_sge_rd = 1;
998 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
999 props->max_cq = dev->attr.max_cqs;
1000 props->max_cqe = dev->attr.max_cqes_per_cq;
1001 props->max_mr = dev->attr.max_mem_regs;
1002 props->max_pd = dev->attr.max_pds;
1003 props->local_ca_ack_delay = 0;
1004
1005 return 0;
1006}
1007
1008static int iwch_query_port(struct ib_device *ibdev,
1009 u8 port, struct ib_port_attr *props)
1010{
1011 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1012 props->max_mtu = IB_MTU_4096;
1013 props->lid = 0;
1014 props->lmc = 0;
1015 props->sm_lid = 0;
1016 props->sm_sl = 0;
1017 props->state = IB_PORT_ACTIVE;
1018 props->phys_state = 0;
1019 props->port_cap_flags =
1020 IB_PORT_CM_SUP |
1021 IB_PORT_SNMP_TUNNEL_SUP |
1022 IB_PORT_REINIT_SUP |
1023 IB_PORT_DEVICE_MGMT_SUP |
1024 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1025 props->gid_tbl_len = 1;
1026 props->pkey_tbl_len = 1;
1027 props->qkey_viol_cntr = 0;
1028 props->active_width = 2;
1029 props->active_speed = 2;
1030 props->max_msg_sz = -1;
1031
1032 return 0;
1033}
1034
1035static ssize_t show_rev(struct class_device *cdev, char *buf)
1036{
1037 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1038 ibdev.class_dev);
1039 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1040 return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1041}
1042
1043static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1044{
1045 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1046 ibdev.class_dev);
1047 struct ethtool_drvinfo info;
1048 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1049
1050 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1051 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1052 return sprintf(buf, "%s\n", info.fw_version);
1053}
1054
1055static ssize_t show_hca(struct class_device *cdev, char *buf)
1056{
1057 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1058 ibdev.class_dev);
1059 struct ethtool_drvinfo info;
1060 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1061
1062 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1063 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1064 return sprintf(buf, "%s\n", info.driver);
1065}
1066
1067static ssize_t show_board(struct class_device *cdev, char *buf)
1068{
1069 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1070 ibdev.class_dev);
1071 PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1072 return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1073 dev->rdev.rnic_info.pdev->device);
1074}
1075
1076static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1077static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1078static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1079static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1080
1081static struct class_device_attribute *iwch_class_attributes[] = {
1082 &class_device_attr_hw_rev,
1083 &class_device_attr_fw_ver,
1084 &class_device_attr_hca_type,
1085 &class_device_attr_board_id
1086};
1087
1088int iwch_register_device(struct iwch_dev *dev)
1089{
1090 int ret;
1091 int i;
1092
1093 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1094 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1095 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1096 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1097 dev->ibdev.owner = THIS_MODULE;
1098 dev->device_cap_flags =
1099 (IB_DEVICE_ZERO_STAG |
1100 IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1101
1102 dev->ibdev.uverbs_cmd_mask =
1103 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1104 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1105 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1106 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1107 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1108 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1109 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1110 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1111 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1112 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1113 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1114 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1115 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1116 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1117 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1118 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1119 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1120 dev->ibdev.node_type = RDMA_NODE_RNIC;
1121 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1122 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1123 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1124 dev->ibdev.class_dev.dev = &(dev->rdev.rnic_info.pdev->dev);
1125 dev->ibdev.query_device = iwch_query_device;
1126 dev->ibdev.query_port = iwch_query_port;
1127 dev->ibdev.modify_port = iwch_modify_port;
1128 dev->ibdev.query_pkey = iwch_query_pkey;
1129 dev->ibdev.query_gid = iwch_query_gid;
1130 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1131 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1132 dev->ibdev.mmap = iwch_mmap;
1133 dev->ibdev.alloc_pd = iwch_allocate_pd;
1134 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1135 dev->ibdev.create_ah = iwch_ah_create;
1136 dev->ibdev.destroy_ah = iwch_ah_destroy;
1137 dev->ibdev.create_qp = iwch_create_qp;
1138 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1139 dev->ibdev.destroy_qp = iwch_destroy_qp;
1140 dev->ibdev.create_cq = iwch_create_cq;
1141 dev->ibdev.destroy_cq = iwch_destroy_cq;
1142 dev->ibdev.resize_cq = iwch_resize_cq;
1143 dev->ibdev.poll_cq = iwch_poll_cq;
1144 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1145 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1146 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1147 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1148 dev->ibdev.dereg_mr = iwch_dereg_mr;
1149 dev->ibdev.alloc_mw = iwch_alloc_mw;
1150 dev->ibdev.bind_mw = iwch_bind_mw;
1151 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1152
1153 dev->ibdev.attach_mcast = iwch_multicast_attach;
1154 dev->ibdev.detach_mcast = iwch_multicast_detach;
1155 dev->ibdev.process_mad = iwch_process_mad;
1156
1157 dev->ibdev.req_notify_cq = iwch_arm_cq;
1158 dev->ibdev.post_send = iwch_post_send;
1159 dev->ibdev.post_recv = iwch_post_receive;
1160
1161
1162 dev->ibdev.iwcm =
1163 (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1164 GFP_KERNEL);
1165 dev->ibdev.iwcm->connect = iwch_connect;
1166 dev->ibdev.iwcm->accept = iwch_accept_cr;
1167 dev->ibdev.iwcm->reject = iwch_reject_cr;
1168 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1169 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1170 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1171 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1172 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1173
1174 ret = ib_register_device(&dev->ibdev);
1175 if (ret)
1176 goto bail1;
1177
1178 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1179 ret = class_device_create_file(&dev->ibdev.class_dev,
1180 iwch_class_attributes[i]);
1181 if (ret) {
1182 goto bail2;
1183 }
1184 }
1185 return 0;
1186bail2:
1187 ib_unregister_device(&dev->ibdev);
1188bail1:
1189 return ret;
1190}
1191
1192void iwch_unregister_device(struct iwch_dev *dev)
1193{
1194 int i;
1195
1196 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1197 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1198 class_device_remove_file(&dev->ibdev.class_dev,
1199 iwch_class_attributes[i]);
1200 ib_unregister_device(&dev->ibdev);
1201 return;
1202}
Linux kernel - Deliverables
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