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Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
[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
f4fd0b22 142static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
b038ced7
SW		 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
ed23a727 295static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
b038ced7
SW		 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;
ed23a727 306 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
b038ced7
SW		 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);
ed23a727 320 if (err < 0)
b038ced7
SW		 321 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
322 chp->cq.cqid);
ed23a727
RD		 323 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
324 err = 0;
b038ced7
SW		 325 return err;
326}
327
328static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
329{
330 int len = vma->vm_end - vma->vm_start;
331 u32 key = vma->vm_pgoff << PAGE_SHIFT;
332 struct cxio_rdev *rdev_p;
333 int ret = 0;
334 struct iwch_mm_entry *mm;
335 struct iwch_ucontext *ucontext;
aeb100e2 336 u64 addr;
b038ced7
SW		 337
338 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
339 key, len);
340
341 if (vma->vm_start & (PAGE_SIZE-1)) {
342 return -EINVAL;
343 }
344
345 rdev_p = &(to_iwch_dev(context->device)->rdev);
346 ucontext = to_iwch_ucontext(context);
347
348 mm = remove_mmap(ucontext, key, len);
349 if (!mm)
350 return -EINVAL;
aeb100e2 351 addr = mm->addr;
b038ced7
SW		 352 kfree(mm);
353
aeb100e2
SW		 354 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
355 (addr < (rdev_p->rnic_info.udbell_physbase +
b038ced7
SW		 356 rdev_p->rnic_info.udbell_len))) {
357
358 /*
359 * Map T3 DB register.
360 */
361 if (vma->vm_flags & VM_READ) {
362 return -EPERM;
363 }
364
365 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
366 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
367 vma->vm_flags &= ~VM_MAYREAD;
368 ret = io_remap_pfn_range(vma, vma->vm_start,
aeb100e2 369 addr >> PAGE_SHIFT,
b038ced7
SW		 370 len, vma->vm_page_prot);
371 } else {
372
373 /*
374 * Map WQ or CQ contig dma memory...
375 */
376 ret = remap_pfn_range(vma, vma->vm_start,
aeb100e2 377 addr >> PAGE_SHIFT,
b038ced7
SW		 378 len, vma->vm_page_prot);
379 }
380
381 return ret;
382}
383
384static int iwch_deallocate_pd(struct ib_pd *pd)
385{
386 struct iwch_dev *rhp;
387 struct iwch_pd *php;
388
389 php = to_iwch_pd(pd);
390 rhp = php->rhp;
391 PDBG("%s ibpd %p pdid 0x%x\n", __FUNCTION__, pd, php->pdid);
392 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
393 kfree(php);
394 return 0;
395}
396
397static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
398 struct ib_ucontext *context,
399 struct ib_udata *udata)
400{
401 struct iwch_pd *php;
402 u32 pdid;
403 struct iwch_dev *rhp;
404
405 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
406 rhp = (struct iwch_dev *) ibdev;
407 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
408 if (!pdid)
409 return ERR_PTR(-EINVAL);
410 php = kzalloc(sizeof(*php), GFP_KERNEL);
411 if (!php) {
412 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
413 return ERR_PTR(-ENOMEM);
414 }
415 php->pdid = pdid;
416 php->rhp = rhp;
417 if (context) {
418 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
419 iwch_deallocate_pd(&php->ibpd);
420 return ERR_PTR(-EFAULT);
421 }
422 }
423 PDBG("%s pdid 0x%0x ptr 0x%p\n", __FUNCTION__, pdid, php);
424 return &php->ibpd;
425}
426
427static int iwch_dereg_mr(struct ib_mr *ib_mr)
428{
429 struct iwch_dev *rhp;
430 struct iwch_mr *mhp;
431 u32 mmid;
432
433 PDBG("%s ib_mr %p\n", __FUNCTION__, ib_mr);
434 /* There can be no memory windows */
435 if (atomic_read(&ib_mr->usecnt))
436 return -EINVAL;
437
438 mhp = to_iwch_mr(ib_mr);
439 rhp = mhp->rhp;
440 mmid = mhp->attr.stag >> 8;
441 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
442 mhp->attr.pbl_addr);
443 remove_handle(rhp, &rhp->mmidr, mmid);
444 if (mhp->kva)
445 kfree((void *) (unsigned long) mhp->kva);
446 PDBG("%s mmid 0x%x ptr %p\n", __FUNCTION__, mmid, mhp);
447 kfree(mhp);
448 return 0;
449}
450
451static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
452 struct ib_phys_buf *buffer_list,
453 int num_phys_buf,
454 int acc,
455 u64 *iova_start)
456{
457 __be64 *page_list;
458 int shift;
459 u64 total_size;
460 int npages;
461 struct iwch_dev *rhp;
462 struct iwch_pd *php;
463 struct iwch_mr *mhp;
464 int ret;
465
466 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
467 php = to_iwch_pd(pd);
468 rhp = php->rhp;
469
b038ced7
SW		 470 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
471 if (!mhp)
472 return ERR_PTR(-ENOMEM);
473
474 /* First check that we have enough alignment */
475 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
476 ret = -EINVAL;
477 goto err;
478 }
479
480 if (num_phys_buf > 1 &&
481 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
482 ret = -EINVAL;
483 goto err;
484 }
485
486 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
487 &total_size, &npages, &shift, &page_list);
488 if (ret)
489 goto err;
490
491 mhp->rhp = rhp;
492 mhp->attr.pdid = php->pdid;
493 mhp->attr.zbva = 0;
494
e64518f3 495 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 496 mhp->attr.va_fbo = *iova_start;
497 mhp->attr.page_size = shift - 12;
498
499 mhp->attr.len = (u32) total_size;
500 mhp->attr.pbl_size = npages;
501 ret = iwch_register_mem(rhp, php, mhp, shift, page_list);
502 kfree(page_list);
503 if (ret) {
504 goto err;
505 }
506 return &mhp->ibmr;
507err:
508 kfree(mhp);
509 return ERR_PTR(ret);
510
511}
512
513static int iwch_reregister_phys_mem(struct ib_mr *mr,
514 int mr_rereg_mask,
515 struct ib_pd *pd,
516 struct ib_phys_buf *buffer_list,
517 int num_phys_buf,
518 int acc, u64 * iova_start)
519{
520
521 struct iwch_mr mh, *mhp;
522 struct iwch_pd *php;
523 struct iwch_dev *rhp;
b038ced7
SW		 524 __be64 *page_list = NULL;
525 int shift = 0;
526 u64 total_size;
527 int npages;
528 int ret;
529
530 PDBG("%s ib_mr %p ib_pd %p\n", __FUNCTION__, mr, pd);
531
532 /* There can be no memory windows */
533 if (atomic_read(&mr->usecnt))
534 return -EINVAL;
535
536 mhp = to_iwch_mr(mr);
537 rhp = mhp->rhp;
538 php = to_iwch_pd(mr->pd);
539
540 /* make sure we are on the same adapter */
541 if (rhp != php->rhp)
542 return -EINVAL;
543
b038ced7
SW		 544 memcpy(&mh, mhp, sizeof *mhp);
545
546 if (mr_rereg_mask & IB_MR_REREG_PD)
547 php = to_iwch_pd(pd);
548 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
e64518f3 549 mh.attr.perms = iwch_ib_to_tpt_access(acc);
d6013471 550 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
b038ced7
SW		 551 ret = build_phys_page_list(buffer_list, num_phys_buf,
552 iova_start,
553 &total_size, &npages,
554 &shift, &page_list);
d6013471
SW		 555 if (ret)
556 return ret;
557 }
b038ced7
SW		 558
559 ret = iwch_reregister_mem(rhp, php, &mh, shift, page_list, npages);
560 kfree(page_list);
561 if (ret) {
562 return ret;
563 }
564 if (mr_rereg_mask & IB_MR_REREG_PD)
565 mhp->attr.pdid = php->pdid;
566 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
e64518f3 567 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 568 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
569 mhp->attr.zbva = 0;
570 mhp->attr.va_fbo = *iova_start;
571 mhp->attr.page_size = shift - 12;
572 mhp->attr.len = (u32) total_size;
573 mhp->attr.pbl_size = npages;
574 }
575
576 return 0;
577}
578
579
580static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
581 int acc, struct ib_udata *udata)
582{
583 __be64 *pages;
584 int shift, n, len;
585 int i, j, k;
586 int err = 0;
587 struct ib_umem_chunk *chunk;
588 struct iwch_dev *rhp;
589 struct iwch_pd *php;
590 struct iwch_mr *mhp;
591 struct iwch_reg_user_mr_resp uresp;
592
593 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
594 shift = ffs(region->page_size) - 1;
595
596 php = to_iwch_pd(pd);
597 rhp = php->rhp;
598 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
599 if (!mhp)
600 return ERR_PTR(-ENOMEM);
601
602 n = 0;
603 list_for_each_entry(chunk, &region->chunk_list, list)
604 n += chunk->nents;
605
606 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
607 if (!pages) {
608 err = -ENOMEM;
609 goto err;
610 }
611
b038ced7
SW		 612 i = n = 0;
613
614 list_for_each_entry(chunk, &region->chunk_list, list)
615 for (j = 0; j < chunk->nmap; ++j) {
616 len = sg_dma_len(&chunk->page_list[j]) >> shift;
617 for (k = 0; k < len; ++k) {
618 pages[i++] = cpu_to_be64(sg_dma_address(
619 &chunk->page_list[j]) +
620 region->page_size * k);
621 }
622 }
623
624 mhp->rhp = rhp;
625 mhp->attr.pdid = php->pdid;
626 mhp->attr.zbva = 0;
e64518f3 627 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
b038ced7
SW		 628 mhp->attr.va_fbo = region->virt_base;
629 mhp->attr.page_size = shift - 12;
630 mhp->attr.len = (u32) region->length;
631 mhp->attr.pbl_size = i;
632 err = iwch_register_mem(rhp, php, mhp, shift, pages);
633 kfree(pages);
634 if (err)
635 goto err;
636
637 if (udata && t3b_device(rhp)) {
638 uresp.pbl_addr = (mhp->attr.pbl_addr -
639 rhp->rdev.rnic_info.pbl_base) >> 3;
640 PDBG("%s user resp pbl_addr 0x%x\n", __FUNCTION__,
641 uresp.pbl_addr);
642
643 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
644 iwch_dereg_mr(&mhp->ibmr);
645 err = -EFAULT;
646 goto err;
647 }
648 }
649
650 return &mhp->ibmr;
651
652err:
653 kfree(mhp);
654 return ERR_PTR(err);
655}
656
657static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
658{
659 struct ib_phys_buf bl;
660 u64 kva;
661 struct ib_mr *ibmr;
662
663 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
664
665 /*
666 * T3 only supports 32 bits of size.
667 */
668 bl.size = 0xffffffff;
669 bl.addr = 0;
670 kva = 0;
671 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
672 return ibmr;
673}
674
675static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
676{
677 struct iwch_dev *rhp;
678 struct iwch_pd *php;
679 struct iwch_mw *mhp;
680 u32 mmid;
681 u32 stag = 0;
682 int ret;
683
684 php = to_iwch_pd(pd);
685 rhp = php->rhp;
686 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
687 if (!mhp)
688 return ERR_PTR(-ENOMEM);
689 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
690 if (ret) {
691 kfree(mhp);
692 return ERR_PTR(ret);
693 }
694 mhp->rhp = rhp;
695 mhp->attr.pdid = php->pdid;
696 mhp->attr.type = TPT_MW;
697 mhp->attr.stag = stag;
698 mmid = (stag) >> 8;
699 insert_handle(rhp, &rhp->mmidr, mhp, mmid);
700 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __FUNCTION__, mmid, mhp, stag);
701 return &(mhp->ibmw);
702}
703
704static int iwch_dealloc_mw(struct ib_mw *mw)
705{
706 struct iwch_dev *rhp;
707 struct iwch_mw *mhp;
708 u32 mmid;
709
710 mhp = to_iwch_mw(mw);
711 rhp = mhp->rhp;
712 mmid = (mw->rkey) >> 8;
713 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
714 remove_handle(rhp, &rhp->mmidr, mmid);
715 kfree(mhp);
716 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __FUNCTION__, mw, mmid, mhp);
717 return 0;
718}
719
720static int iwch_destroy_qp(struct ib_qp *ib_qp)
721{
722 struct iwch_dev *rhp;
723 struct iwch_qp *qhp;
724 struct iwch_qp_attributes attrs;
725 struct iwch_ucontext *ucontext;
726
727 qhp = to_iwch_qp(ib_qp);
728 rhp = qhp->rhp;
729
2df50da0
SW		 730 attrs.next_state = IWCH_QP_STATE_ERROR;
731 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
b038ced7
SW		 732 wait_event(qhp->wait, !qhp->ep);
733
734 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
735
736 atomic_dec(&qhp->refcnt);
737 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
738
739 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
740 : NULL;
741 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
742 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
743
744 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __FUNCTION__,
745 ib_qp, qhp->wq.qpid, qhp);
746 kfree(qhp);
747 return 0;
748}
749
750static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
751 struct ib_qp_init_attr *attrs,
752 struct ib_udata *udata)
753{
754 struct iwch_dev *rhp;
755 struct iwch_qp *qhp;
756 struct iwch_pd *php;
757 struct iwch_cq *schp;
758 struct iwch_cq *rchp;
759 struct iwch_create_qp_resp uresp;
760 int wqsize, sqsize, rqsize;
761 struct iwch_ucontext *ucontext;
762
763 PDBG("%s ib_pd %p\n", __FUNCTION__, pd);
764 if (attrs->qp_type != IB_QPT_RC)
765 return ERR_PTR(-EINVAL);
766 php = to_iwch_pd(pd);
767 rhp = php->rhp;
768 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
769 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
770 if (!schp || !rchp)
771 return ERR_PTR(-EINVAL);
772
773 /* The RQT size must be # of entries + 1 rounded up to a power of two */
774 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
775 if (rqsize == attrs->cap.max_recv_wr)
776 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
777
778 /* T3 doesn't support RQT depth < 16 */
779 if (rqsize < 16)
780 rqsize = 16;
781
782 if (rqsize > T3_MAX_RQ_SIZE)
783 return ERR_PTR(-EINVAL);
784
1860cdf8
SW		 785 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
786 return ERR_PTR(-EINVAL);
787
b038ced7
SW		 788 /*
789 * NOTE: The SQ and total WQ sizes don't need to be
790 * a power of two. However, all the code assumes
791 * they are. EG: Q_FREECNT() and friends.
792 */
793 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
794 wqsize = roundup_pow_of_two(rqsize + sqsize);
795 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __FUNCTION__,
796 wqsize, sqsize, rqsize);
797 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
798 if (!qhp)
799 return ERR_PTR(-ENOMEM);
800 qhp->wq.size_log2 = ilog2(wqsize);
801 qhp->wq.rq_size_log2 = ilog2(rqsize);
802 qhp->wq.sq_size_log2 = ilog2(sqsize);
803 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
804 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
805 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
806 kfree(qhp);
807 return ERR_PTR(-ENOMEM);
808 }
809 attrs->cap.max_recv_wr = rqsize - 1;
810 attrs->cap.max_send_wr = sqsize;
811 qhp->rhp = rhp;
812 qhp->attr.pd = php->pdid;
813 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
814 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
815 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
816 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
817 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
818 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
819 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
820 qhp->attr.state = IWCH_QP_STATE_IDLE;
821 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
822
823 /*
824 * XXX - These don't get passed in from the openib user
825 * at create time. The CM sets them via a QP modify.
826 * Need to fix... I think the CM should
827 */
828 qhp->attr.enable_rdma_read = 1;
829 qhp->attr.enable_rdma_write = 1;
830 qhp->attr.enable_bind = 1;
831 qhp->attr.max_ord = 1;
832 qhp->attr.max_ird = 1;
833
834 spin_lock_init(&qhp->lock);
835 init_waitqueue_head(&qhp->wait);
836 atomic_set(&qhp->refcnt, 1);
837 insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid);
838
839 if (udata) {
840
841 struct iwch_mm_entry *mm1, *mm2;
842
843 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
844 if (!mm1) {
845 iwch_destroy_qp(&qhp->ibqp);
846 return ERR_PTR(-ENOMEM);
847 }
848
849 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
850 if (!mm2) {
851 kfree(mm1);
852 iwch_destroy_qp(&qhp->ibqp);
853 return ERR_PTR(-ENOMEM);
854 }
855
856 uresp.qpid = qhp->wq.qpid;
857 uresp.size_log2 = qhp->wq.size_log2;
858 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
859 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
860 spin_lock(&ucontext->mmap_lock);
861 uresp.key = ucontext->key;
862 ucontext->key += PAGE_SIZE;
863 uresp.db_key = ucontext->key;
864 ucontext->key += PAGE_SIZE;
865 spin_unlock(&ucontext->mmap_lock);
866 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
867 kfree(mm1);
868 kfree(mm2);
869 iwch_destroy_qp(&qhp->ibqp);
870 return ERR_PTR(-EFAULT);
871 }
872 mm1->key = uresp.key;
873 mm1->addr = virt_to_phys(qhp->wq.queue);
874 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
875 insert_mmap(ucontext, mm1);
876 mm2->key = uresp.db_key;
877 mm2->addr = qhp->wq.udb & PAGE_MASK;
878 mm2->len = PAGE_SIZE;
879 insert_mmap(ucontext, mm2);
880 }
881 qhp->ibqp.qp_num = qhp->wq.qpid;
882 init_timer(&(qhp->timer));
883 PDBG("%s sq_num_entries %d, rq_num_entries %d "
884 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d\n",
885 __FUNCTION__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
886 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
887 1 << qhp->wq.size_log2);
888 return &qhp->ibqp;
889}
890
891static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
892 int attr_mask, struct ib_udata *udata)
893{
894 struct iwch_dev *rhp;
895 struct iwch_qp *qhp;
896 enum iwch_qp_attr_mask mask = 0;
897 struct iwch_qp_attributes attrs;
898
899 PDBG("%s ib_qp %p\n", __FUNCTION__, ibqp);
900
901 /* iwarp does not support the RTR state */
902 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
903 attr_mask &= ~IB_QP_STATE;
904
905 /* Make sure we still have something left to do */
906 if (!attr_mask)
907 return 0;
908
909 memset(&attrs, 0, sizeof attrs);
910 qhp = to_iwch_qp(ibqp);
911 rhp = qhp->rhp;
912
913 attrs.next_state = iwch_convert_state(attr->qp_state);
914 attrs.enable_rdma_read = (attr->qp_access_flags &
915 IB_ACCESS_REMOTE_READ) ? 1 : 0;
916 attrs.enable_rdma_write = (attr->qp_access_flags &
917 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
918 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
919
920
921 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
922 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
923 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
924 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
925 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
926
927 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
928}
929
930void iwch_qp_add_ref(struct ib_qp *qp)
931{
932 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
933 atomic_inc(&(to_iwch_qp(qp)->refcnt));
934}
935
936void iwch_qp_rem_ref(struct ib_qp *qp)
937{
938 PDBG("%s ib_qp %p\n", __FUNCTION__, qp);
939 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
940 wake_up(&(to_iwch_qp(qp)->wait));
941}
942
2b540355 943static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
b038ced7
SW		 944{
945 PDBG("%s ib_dev %p qpn 0x%x\n", __FUNCTION__, dev, qpn);
946 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
947}
948
949
950static int iwch_query_pkey(struct ib_device *ibdev,
951 u8 port, u16 index, u16 * pkey)
952{
953 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
954 *pkey = 0;
955 return 0;
956}
957
958static int iwch_query_gid(struct ib_device *ibdev, u8 port,
959 int index, union ib_gid *gid)
960{
961 struct iwch_dev *dev;
962
963 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
964 __FUNCTION__, ibdev, port, index, gid);
965 dev = to_iwch_dev(ibdev);
966 BUG_ON(port == 0 || port > 2);
967 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
968 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
969 return 0;
970}
971
972static int iwch_query_device(struct ib_device *ibdev,
973 struct ib_device_attr *props)
974{
975
976 struct iwch_dev *dev;
977 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
978
979 dev = to_iwch_dev(ibdev);
980 memset(props, 0, sizeof *props);
981 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
982 props->device_cap_flags = dev->device_cap_flags;
983 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
984 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
985 props->max_mr_size = ~0ull;
986 props->max_qp = dev->attr.max_qps;
987 props->max_qp_wr = dev->attr.max_wrs;
988 props->max_sge = dev->attr.max_sge_per_wr;
989 props->max_sge_rd = 1;
990 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
991 props->max_cq = dev->attr.max_cqs;
992 props->max_cqe = dev->attr.max_cqes_per_cq;
993 props->max_mr = dev->attr.max_mem_regs;
994 props->max_pd = dev->attr.max_pds;
995 props->local_ca_ack_delay = 0;
996
997 return 0;
998}
999
1000static int iwch_query_port(struct ib_device *ibdev,
1001 u8 port, struct ib_port_attr *props)
1002{
1003 PDBG("%s ibdev %p\n", __FUNCTION__, ibdev);
1004 props->max_mtu = IB_MTU_4096;
1005 props->lid = 0;
1006 props->lmc = 0;
1007 props->sm_lid = 0;
1008 props->sm_sl = 0;
1009 props->state = IB_PORT_ACTIVE;
1010 props->phys_state = 0;
1011 props->port_cap_flags =
1012 IB_PORT_CM_SUP |
1013 IB_PORT_SNMP_TUNNEL_SUP |
1014 IB_PORT_REINIT_SUP |
1015 IB_PORT_DEVICE_MGMT_SUP |
1016 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1017 props->gid_tbl_len = 1;
1018 props->pkey_tbl_len = 1;
1019 props->qkey_viol_cntr = 0;
1020 props->active_width = 2;
1021 props->active_speed = 2;
1022 props->max_msg_sz = -1;
1023
1024 return 0;
1025}
1026
1027static ssize_t show_rev(struct class_device *cdev, char *buf)
1028{
1029 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1030 ibdev.class_dev);
1031 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1032 return sprintf(buf, "%d\n", dev->rdev.t3cdev_p->type);
1033}
1034
1035static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1036{
1037 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1038 ibdev.class_dev);
1039 struct ethtool_drvinfo info;
1040 struct net_device *lldev = dev->rdev.t3cdev_p->lldev;
1041
1042 PDBG("%s class dev 0x%p\n", __FUNCTION__, cdev);
1043 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1044 return sprintf(buf, "%s\n", info.fw_version);
1045}
1046
1047static ssize_t show_hca(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.driver);
1057}
1058
1059static ssize_t show_board(struct class_device *cdev, char *buf)
1060{
1061 struct iwch_dev *dev = container_of(cdev, struct iwch_dev,
1062 ibdev.class_dev);
1063 PDBG("%s class dev 0x%p\n", __FUNCTION__, dev);
1064 return sprintf(buf, "%x.%x\n", dev->rdev.rnic_info.pdev->vendor,
1065 dev->rdev.rnic_info.pdev->device);
1066}
1067
1068static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1069static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1070static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1071static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1072
1073static struct class_device_attribute *iwch_class_attributes[] = {
1074 &class_device_attr_hw_rev,
1075 &class_device_attr_fw_ver,
1076 &class_device_attr_hca_type,
1077 &class_device_attr_board_id
1078};
1079
1080int iwch_register_device(struct iwch_dev *dev)
1081{
1082 int ret;
1083 int i;
1084
1085 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1086 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1087 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1088 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1089 dev->ibdev.owner = THIS_MODULE;
1090 dev->device_cap_flags =
1091 (IB_DEVICE_ZERO_STAG |
1092 IB_DEVICE_SEND_W_INV | IB_DEVICE_MEM_WINDOW);
1093
1094 dev->ibdev.uverbs_cmd_mask =
1095 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1096 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1097 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1098 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1099 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1100 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1101 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1102 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1103 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1104 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1105 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1106 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1107 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1108 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1109 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1110 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1111 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1112 dev->ibdev.node_type = RDMA_NODE_RNIC;
1113 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1114 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
f4fd0b22 1115 dev->ibdev.num_comp_vectors = 1;
b038ced7 1116 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
b038ced7
SW		 1117 dev->ibdev.query_device = iwch_query_device;
1118 dev->ibdev.query_port = iwch_query_port;
1119 dev->ibdev.modify_port = iwch_modify_port;
1120 dev->ibdev.query_pkey = iwch_query_pkey;
1121 dev->ibdev.query_gid = iwch_query_gid;
1122 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1123 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1124 dev->ibdev.mmap = iwch_mmap;
1125 dev->ibdev.alloc_pd = iwch_allocate_pd;
1126 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1127 dev->ibdev.create_ah = iwch_ah_create;
1128 dev->ibdev.destroy_ah = iwch_ah_destroy;
1129 dev->ibdev.create_qp = iwch_create_qp;
1130 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1131 dev->ibdev.destroy_qp = iwch_destroy_qp;
1132 dev->ibdev.create_cq = iwch_create_cq;
1133 dev->ibdev.destroy_cq = iwch_destroy_cq;
1134 dev->ibdev.resize_cq = iwch_resize_cq;
1135 dev->ibdev.poll_cq = iwch_poll_cq;
1136 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1137 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1138 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1139 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1140 dev->ibdev.dereg_mr = iwch_dereg_mr;
1141 dev->ibdev.alloc_mw = iwch_alloc_mw;
1142 dev->ibdev.bind_mw = iwch_bind_mw;
1143 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1144
1145 dev->ibdev.attach_mcast = iwch_multicast_attach;
1146 dev->ibdev.detach_mcast = iwch_multicast_detach;
1147 dev->ibdev.process_mad = iwch_process_mad;
1148
1149 dev->ibdev.req_notify_cq = iwch_arm_cq;
1150 dev->ibdev.post_send = iwch_post_send;
1151 dev->ibdev.post_recv = iwch_post_receive;
1152
1153
1154 dev->ibdev.iwcm =
1155 (struct iw_cm_verbs *) kmalloc(sizeof(struct iw_cm_verbs),
1156 GFP_KERNEL);
1157 dev->ibdev.iwcm->connect = iwch_connect;
1158 dev->ibdev.iwcm->accept = iwch_accept_cr;
1159 dev->ibdev.iwcm->reject = iwch_reject_cr;
1160 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1161 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1162 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1163 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1164 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1165
1166 ret = ib_register_device(&dev->ibdev);
1167 if (ret)
1168 goto bail1;
1169
1170 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1171 ret = class_device_create_file(&dev->ibdev.class_dev,
1172 iwch_class_attributes[i]);
1173 if (ret) {
1174 goto bail2;
1175 }
1176 }
1177 return 0;
1178bail2:
1179 ib_unregister_device(&dev->ibdev);
1180bail1:
1181 return ret;
1182}
1183
1184void iwch_unregister_device(struct iwch_dev *dev)
1185{
1186 int i;
1187
1188 PDBG("%s iwch_dev %p\n", __FUNCTION__, dev);
1189 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1190 class_device_remove_file(&dev->ibdev.class_dev,
1191 iwch_class_attributes[i]);
1192 ib_unregister_device(&dev->ibdev);
1193 return;
1194}
Linux kernel - Deliverables
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