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uwb: Use kcalloc instead of kzalloc to allocate array
[zen-stable.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
blob37c224fc3ad9b8f31e0886507fc43f543ee547b0
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/sched.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45 #include <linux/slab.h>
46
47 #include <asm/io.h>
48 #include <asm/irq.h>
49 #include <asm/byteorder.h>
50
51 #include <rdma/iw_cm.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_smi.h>
54 #include <rdma/ib_umem.h>
55 #include <rdma/ib_user_verbs.h>
56
57 #include "cxio_hal.h"
58 #include "iwch.h"
59 #include "iwch_provider.h"
60 #include "iwch_cm.h"
61 #include "iwch_user.h"
62 #include "common.h"
63
64 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
65 struct ib_ah_attr *ah_attr)
66 {
67 return ERR_PTR(-ENOSYS);
68 }
69
70 static int iwch_ah_destroy(struct ib_ah *ah)
71 {
72 return -ENOSYS;
73 }
74
75 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
76 {
77 return -ENOSYS;
78 }
79
80 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
81 {
82 return -ENOSYS;
83 }
84
85 static int iwch_process_mad(struct ib_device *ibdev,
86 int mad_flags,
87 u8 port_num,
88 struct ib_wc *in_wc,
89 struct ib_grh *in_grh,
90 struct ib_mad *in_mad, struct ib_mad *out_mad)
91 {
92 return -ENOSYS;
93 }
94
95 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
96 {
97 struct iwch_dev *rhp = to_iwch_dev(context->device);
98 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
99 struct iwch_mm_entry *mm, *tmp;
100
101 PDBG("%s context %p\n", __func__, context);
102 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
103 kfree(mm);
104 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
105 kfree(ucontext);
106 return 0;
107 }
108
109 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
110 struct ib_udata *udata)
111 {
112 struct iwch_ucontext *context;
113 struct iwch_dev *rhp = to_iwch_dev(ibdev);
114
115 PDBG("%s ibdev %p\n", __func__, ibdev);
116 context = kzalloc(sizeof(*context), GFP_KERNEL);
117 if (!context)
118 return ERR_PTR(-ENOMEM);
119 cxio_init_ucontext(&rhp->rdev, &context->uctx);
120 INIT_LIST_HEAD(&context->mmaps);
121 spin_lock_init(&context->mmap_lock);
122 return &context->ibucontext;
123 }
124
125 static int iwch_destroy_cq(struct ib_cq *ib_cq)
126 {
127 struct iwch_cq *chp;
128
129 PDBG("%s ib_cq %p\n", __func__, ib_cq);
130 chp = to_iwch_cq(ib_cq);
131
132 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
133 atomic_dec(&chp->refcnt);
134 wait_event(chp->wait, !atomic_read(&chp->refcnt));
135
136 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
137 kfree(chp);
138 return 0;
139 }
140
141 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int vector,
142 struct ib_ucontext *ib_context,
143 struct ib_udata *udata)
144 {
145 struct iwch_dev *rhp;
146 struct iwch_cq *chp;
147 struct iwch_create_cq_resp uresp;
148 struct iwch_create_cq_req ureq;
149 struct iwch_ucontext *ucontext = NULL;
150 static int warned;
151 size_t resplen;
152
153 PDBG("%s ib_dev %p entries %d\n", __func__, 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, !ucontext)) {
187 kfree(chp);
188 return ERR_PTR(-ENOMEM);
189 }
190 chp->rhp = rhp;
191 chp->ibcq.cqe = 1 << chp->cq.size_log2;
192 spin_lock_init(&chp->lock);
193 spin_lock_init(&chp->comp_handler_lock);
194 atomic_set(&chp->refcnt, 1);
195 init_waitqueue_head(&chp->wait);
196 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
197 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
198 kfree(chp);
199 return ERR_PTR(-ENOMEM);
200 }
201
202 if (ucontext) {
203 struct iwch_mm_entry *mm;
204
205 mm = kmalloc(sizeof *mm, GFP_KERNEL);
206 if (!mm) {
207 iwch_destroy_cq(&chp->ibcq);
208 return ERR_PTR(-ENOMEM);
209 }
210 uresp.cqid = chp->cq.cqid;
211 uresp.size_log2 = chp->cq.size_log2;
212 spin_lock(&ucontext->mmap_lock);
213 uresp.key = ucontext->key;
214 ucontext->key += PAGE_SIZE;
215 spin_unlock(&ucontext->mmap_lock);
216 mm->key = uresp.key;
217 mm->addr = virt_to_phys(chp->cq.queue);
218 if (udata->outlen < sizeof uresp) {
219 if (!warned++)
220 printk(KERN_WARNING MOD "Warning - "
221 "downlevel libcxgb3 (non-fatal).\n");
222 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
223 sizeof(struct t3_cqe));
224 resplen = sizeof(struct iwch_create_cq_resp_v0);
225 } else {
226 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
227 sizeof(struct t3_cqe));
228 uresp.memsize = mm->len;
229 resplen = sizeof uresp;
230 }
231 if (ib_copy_to_udata(udata, &uresp, resplen)) {
232 kfree(mm);
233 iwch_destroy_cq(&chp->ibcq);
234 return ERR_PTR(-EFAULT);
235 }
236 insert_mmap(ucontext, mm);
237 }
238 PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
239 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
240 (unsigned long long) chp->cq.dma_addr);
241 return &chp->ibcq;
242 }
243
244 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
245 {
246 #ifdef notyet
247 struct iwch_cq *chp = to_iwch_cq(cq);
248 struct t3_cq oldcq, newcq;
249 int ret;
250
251 PDBG("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
252
253 /* We don't downsize... */
254 if (cqe <= cq->cqe)
255 return 0;
256
257 /* create new t3_cq with new size */
258 cqe = roundup_pow_of_two(cqe+1);
259 newcq.size_log2 = ilog2(cqe);
260
261 /* Dont allow resize to less than the current wce count */
262 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
263 return -ENOMEM;
264 }
265
266 /* Quiesce all QPs using this CQ */
267 ret = iwch_quiesce_qps(chp);
268 if (ret) {
269 return ret;
270 }
271
272 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
273 if (ret) {
274 return ret;
275 }
276
277 /* copy CQEs */
278 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
279 sizeof(struct t3_cqe));
280
281 /* old iwch_qp gets new t3_cq but keeps old cqid */
282 oldcq = chp->cq;
283 chp->cq = newcq;
284 chp->cq.cqid = oldcq.cqid;
285
286 /* resize new t3_cq to update the HW context */
287 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
288 if (ret) {
289 chp->cq = oldcq;
290 return ret;
291 }
292 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
293
294 /* destroy old t3_cq */
295 oldcq.cqid = newcq.cqid;
296 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
297 if (ret) {
298 printk(KERN_ERR MOD "%s - cxio_destroy_cq failed %d\n",
299 __func__, ret);
300 }
301
302 /* add user hooks here */
303
304 /* resume qps */
305 ret = iwch_resume_qps(chp);
306 return ret;
307 #else
308 return -ENOSYS;
309 #endif
310 }
311
312 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
313 {
314 struct iwch_dev *rhp;
315 struct iwch_cq *chp;
316 enum t3_cq_opcode cq_op;
317 int err;
318 unsigned long flag;
319 u32 rptr;
320
321 chp = to_iwch_cq(ibcq);
322 rhp = chp->rhp;
323 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
324 cq_op = CQ_ARM_SE;
325 else
326 cq_op = CQ_ARM_AN;
327 if (chp->user_rptr_addr) {
328 if (get_user(rptr, chp->user_rptr_addr))
329 return -EFAULT;
330 spin_lock_irqsave(&chp->lock, flag);
331 chp->cq.rptr = rptr;
332 } else
333 spin_lock_irqsave(&chp->lock, flag);
334 PDBG("%s rptr 0x%x\n", __func__, chp->cq.rptr);
335 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
336 spin_unlock_irqrestore(&chp->lock, flag);
337 if (err < 0)
338 printk(KERN_ERR MOD "Error %d rearming CQID 0x%x\n", err,
339 chp->cq.cqid);
340 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
341 err = 0;
342 return err;
343 }
344
345 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
346 {
347 int len = vma->vm_end - vma->vm_start;
348 u32 key = vma->vm_pgoff << PAGE_SHIFT;
349 struct cxio_rdev *rdev_p;
350 int ret = 0;
351 struct iwch_mm_entry *mm;
352 struct iwch_ucontext *ucontext;
353 u64 addr;
354
355 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
356 key, len);
357
358 if (vma->vm_start & (PAGE_SIZE-1)) {
359 return -EINVAL;
360 }
361
362 rdev_p = &(to_iwch_dev(context->device)->rdev);
363 ucontext = to_iwch_ucontext(context);
364
365 mm = remove_mmap(ucontext, key, len);
366 if (!mm)
367 return -EINVAL;
368 addr = mm->addr;
369 kfree(mm);
370
371 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
372 (addr < (rdev_p->rnic_info.udbell_physbase +
373 rdev_p->rnic_info.udbell_len))) {
374
375 /*
376 * Map T3 DB register.
377 */
378 if (vma->vm_flags & VM_READ) {
379 return -EPERM;
380 }
381
382 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
383 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
384 vma->vm_flags &= ~VM_MAYREAD;
385 ret = io_remap_pfn_range(vma, vma->vm_start,
386 addr >> PAGE_SHIFT,
387 len, vma->vm_page_prot);
388 } else {
389
390 /*
391 * Map WQ or CQ contig dma memory...
392 */
393 ret = remap_pfn_range(vma, vma->vm_start,
394 addr >> PAGE_SHIFT,
395 len, vma->vm_page_prot);
396 }
397
398 return ret;
399 }
400
401 static int iwch_deallocate_pd(struct ib_pd *pd)
402 {
403 struct iwch_dev *rhp;
404 struct iwch_pd *php;
405
406 php = to_iwch_pd(pd);
407 rhp = php->rhp;
408 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
409 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
410 kfree(php);
411 return 0;
412 }
413
414 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
415 struct ib_ucontext *context,
416 struct ib_udata *udata)
417 {
418 struct iwch_pd *php;
419 u32 pdid;
420 struct iwch_dev *rhp;
421
422 PDBG("%s ibdev %p\n", __func__, ibdev);
423 rhp = (struct iwch_dev *) ibdev;
424 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
425 if (!pdid)
426 return ERR_PTR(-EINVAL);
427 php = kzalloc(sizeof(*php), GFP_KERNEL);
428 if (!php) {
429 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
430 return ERR_PTR(-ENOMEM);
431 }
432 php->pdid = pdid;
433 php->rhp = rhp;
434 if (context) {
435 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
436 iwch_deallocate_pd(&php->ibpd);
437 return ERR_PTR(-EFAULT);
438 }
439 }
440 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
441 return &php->ibpd;
442 }
443
444 static int iwch_dereg_mr(struct ib_mr *ib_mr)
445 {
446 struct iwch_dev *rhp;
447 struct iwch_mr *mhp;
448 u32 mmid;
449
450 PDBG("%s ib_mr %p\n", __func__, ib_mr);
451 /* There can be no memory windows */
452 if (atomic_read(&ib_mr->usecnt))
453 return -EINVAL;
454
455 mhp = to_iwch_mr(ib_mr);
456 rhp = mhp->rhp;
457 mmid = mhp->attr.stag >> 8;
458 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
459 mhp->attr.pbl_addr);
460 iwch_free_pbl(mhp);
461 remove_handle(rhp, &rhp->mmidr, mmid);
462 if (mhp->kva)
463 kfree((void *) (unsigned long) mhp->kva);
464 if (mhp->umem)
465 ib_umem_release(mhp->umem);
466 PDBG("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
467 kfree(mhp);
468 return 0;
469 }
470
471 static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
472 struct ib_phys_buf *buffer_list,
473 int num_phys_buf,
474 int acc,
475 u64 *iova_start)
476 {
477 __be64 *page_list;
478 int shift;
479 u64 total_size;
480 int npages;
481 struct iwch_dev *rhp;
482 struct iwch_pd *php;
483 struct iwch_mr *mhp;
484 int ret;
485
486 PDBG("%s ib_pd %p\n", __func__, pd);
487 php = to_iwch_pd(pd);
488 rhp = php->rhp;
489
490 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
491 if (!mhp)
492 return ERR_PTR(-ENOMEM);
493
494 mhp->rhp = rhp;
495
496 /* First check that we have enough alignment */
497 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
498 ret = -EINVAL;
499 goto err;
500 }
501
502 if (num_phys_buf > 1 &&
503 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
504 ret = -EINVAL;
505 goto err;
506 }
507
508 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
509 &total_size, &npages, &shift, &page_list);
510 if (ret)
511 goto err;
512
513 ret = iwch_alloc_pbl(mhp, npages);
514 if (ret) {
515 kfree(page_list);
516 goto err_pbl;
517 }
518
519 ret = iwch_write_pbl(mhp, page_list, npages, 0);
520 kfree(page_list);
521 if (ret)
522 goto err_pbl;
523
524 mhp->attr.pdid = php->pdid;
525 mhp->attr.zbva = 0;
526
527 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
528 mhp->attr.va_fbo = *iova_start;
529 mhp->attr.page_size = shift - 12;
530
531 mhp->attr.len = (u32) total_size;
532 mhp->attr.pbl_size = npages;
533 ret = iwch_register_mem(rhp, php, mhp, shift);
534 if (ret)
535 goto err_pbl;
536
537 return &mhp->ibmr;
538
539 err_pbl:
540 iwch_free_pbl(mhp);
541
542 err:
543 kfree(mhp);
544 return ERR_PTR(ret);
545
546 }
547
548 static int iwch_reregister_phys_mem(struct ib_mr *mr,
549 int mr_rereg_mask,
550 struct ib_pd *pd,
551 struct ib_phys_buf *buffer_list,
552 int num_phys_buf,
553 int acc, u64 * iova_start)
554 {
555
556 struct iwch_mr mh, *mhp;
557 struct iwch_pd *php;
558 struct iwch_dev *rhp;
559 __be64 *page_list = NULL;
560 int shift = 0;
561 u64 total_size;
562 int npages;
563 int ret;
564
565 PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
566
567 /* There can be no memory windows */
568 if (atomic_read(&mr->usecnt))
569 return -EINVAL;
570
571 mhp = to_iwch_mr(mr);
572 rhp = mhp->rhp;
573 php = to_iwch_pd(mr->pd);
574
575 /* make sure we are on the same adapter */
576 if (rhp != php->rhp)
577 return -EINVAL;
578
579 memcpy(&mh, mhp, sizeof *mhp);
580
581 if (mr_rereg_mask & IB_MR_REREG_PD)
582 php = to_iwch_pd(pd);
583 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
584 mh.attr.perms = iwch_ib_to_tpt_access(acc);
585 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
586 ret = build_phys_page_list(buffer_list, num_phys_buf,
587 iova_start,
588 &total_size, &npages,
589 &shift, &page_list);
590 if (ret)
591 return ret;
592 }
593
594 ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
595 kfree(page_list);
596 if (ret) {
597 return ret;
598 }
599 if (mr_rereg_mask & IB_MR_REREG_PD)
600 mhp->attr.pdid = php->pdid;
601 if (mr_rereg_mask & IB_MR_REREG_ACCESS)
602 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
603 if (mr_rereg_mask & IB_MR_REREG_TRANS) {
604 mhp->attr.zbva = 0;
605 mhp->attr.va_fbo = *iova_start;
606 mhp->attr.page_size = shift - 12;
607 mhp->attr.len = (u32) total_size;
608 mhp->attr.pbl_size = npages;
609 }
610
611 return 0;
612 }
613
614
615 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
616 u64 virt, int acc, struct ib_udata *udata)
617 {
618 __be64 *pages;
619 int shift, n, len;
620 int i, j, k;
621 int err = 0;
622 struct ib_umem_chunk *chunk;
623 struct iwch_dev *rhp;
624 struct iwch_pd *php;
625 struct iwch_mr *mhp;
626 struct iwch_reg_user_mr_resp uresp;
627
628 PDBG("%s ib_pd %p\n", __func__, pd);
629
630 php = to_iwch_pd(pd);
631 rhp = php->rhp;
632 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
633 if (!mhp)
634 return ERR_PTR(-ENOMEM);
635
636 mhp->rhp = rhp;
637
638 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
639 if (IS_ERR(mhp->umem)) {
640 err = PTR_ERR(mhp->umem);
641 kfree(mhp);
642 return ERR_PTR(err);
643 }
644
645 shift = ffs(mhp->umem->page_size) - 1;
646
647 n = 0;
648 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
649 n += chunk->nents;
650
651 err = iwch_alloc_pbl(mhp, n);
652 if (err)
653 goto err;
654
655 pages = (__be64 *) __get_free_page(GFP_KERNEL);
656 if (!pages) {
657 err = -ENOMEM;
658 goto err_pbl;
659 }
660
661 i = n = 0;
662
663 list_for_each_entry(chunk, &mhp->umem->chunk_list, list)
664 for (j = 0; j < chunk->nmap; ++j) {
665 len = sg_dma_len(&chunk->page_list[j]) >> shift;
666 for (k = 0; k < len; ++k) {
667 pages[i++] = cpu_to_be64(sg_dma_address(
668 &chunk->page_list[j]) +
669 mhp->umem->page_size * k);
670 if (i == PAGE_SIZE / sizeof *pages) {
671 err = iwch_write_pbl(mhp, pages, i, n);
672 if (err)
673 goto pbl_done;
674 n += i;
675 i = 0;
676 }
677 }
678 }
679
680 if (i)
681 err = iwch_write_pbl(mhp, pages, i, n);
682
683 pbl_done:
684 free_page((unsigned long) pages);
685 if (err)
686 goto err_pbl;
687
688 mhp->attr.pdid = php->pdid;
689 mhp->attr.zbva = 0;
690 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
691 mhp->attr.va_fbo = virt;
692 mhp->attr.page_size = shift - 12;
693 mhp->attr.len = (u32) length;
694
695 err = iwch_register_mem(rhp, php, mhp, shift);
696 if (err)
697 goto err_pbl;
698
699 if (udata && !t3a_device(rhp)) {
700 uresp.pbl_addr = (mhp->attr.pbl_addr -
701 rhp->rdev.rnic_info.pbl_base) >> 3;
702 PDBG("%s user resp pbl_addr 0x%x\n", __func__,
703 uresp.pbl_addr);
704
705 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
706 iwch_dereg_mr(&mhp->ibmr);
707 err = -EFAULT;
708 goto err;
709 }
710 }
711
712 return &mhp->ibmr;
713
714 err_pbl:
715 iwch_free_pbl(mhp);
716
717 err:
718 ib_umem_release(mhp->umem);
719 kfree(mhp);
720 return ERR_PTR(err);
721 }
722
723 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
724 {
725 struct ib_phys_buf bl;
726 u64 kva;
727 struct ib_mr *ibmr;
728
729 PDBG("%s ib_pd %p\n", __func__, pd);
730
731 /*
732 * T3 only supports 32 bits of size.
733 */
734 bl.size = 0xffffffff;
735 bl.addr = 0;
736 kva = 0;
737 ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
738 return ibmr;
739 }
740
741 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd)
742 {
743 struct iwch_dev *rhp;
744 struct iwch_pd *php;
745 struct iwch_mw *mhp;
746 u32 mmid;
747 u32 stag = 0;
748 int ret;
749
750 php = to_iwch_pd(pd);
751 rhp = php->rhp;
752 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
753 if (!mhp)
754 return ERR_PTR(-ENOMEM);
755 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
756 if (ret) {
757 kfree(mhp);
758 return ERR_PTR(ret);
759 }
760 mhp->rhp = rhp;
761 mhp->attr.pdid = php->pdid;
762 mhp->attr.type = TPT_MW;
763 mhp->attr.stag = stag;
764 mmid = (stag) >> 8;
765 mhp->ibmw.rkey = stag;
766 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
767 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
768 kfree(mhp);
769 return ERR_PTR(-ENOMEM);
770 }
771 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
772 return &(mhp->ibmw);
773 }
774
775 static int iwch_dealloc_mw(struct ib_mw *mw)
776 {
777 struct iwch_dev *rhp;
778 struct iwch_mw *mhp;
779 u32 mmid;
780
781 mhp = to_iwch_mw(mw);
782 rhp = mhp->rhp;
783 mmid = (mw->rkey) >> 8;
784 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
785 remove_handle(rhp, &rhp->mmidr, mmid);
786 kfree(mhp);
787 PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
788 return 0;
789 }
790
791 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
792 {
793 struct iwch_dev *rhp;
794 struct iwch_pd *php;
795 struct iwch_mr *mhp;
796 u32 mmid;
797 u32 stag = 0;
798 int ret = 0;
799
800 php = to_iwch_pd(pd);
801 rhp = php->rhp;
802 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
803 if (!mhp)
804 goto err;
805
806 mhp->rhp = rhp;
807 ret = iwch_alloc_pbl(mhp, pbl_depth);
808 if (ret)
809 goto err1;
810 mhp->attr.pbl_size = pbl_depth;
811 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
812 mhp->attr.pbl_size, mhp->attr.pbl_addr);
813 if (ret)
814 goto err2;
815 mhp->attr.pdid = php->pdid;
816 mhp->attr.type = TPT_NON_SHARED_MR;
817 mhp->attr.stag = stag;
818 mhp->attr.state = 1;
819 mmid = (stag) >> 8;
820 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
821 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
822 goto err3;
823
824 PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
825 return &(mhp->ibmr);
826 err3:
827 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
828 mhp->attr.pbl_addr);
829 err2:
830 iwch_free_pbl(mhp);
831 err1:
832 kfree(mhp);
833 err:
834 return ERR_PTR(ret);
835 }
836
837 static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
838 struct ib_device *device,
839 int page_list_len)
840 {
841 struct ib_fast_reg_page_list *page_list;
842
843 page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
844 GFP_KERNEL);
845 if (!page_list)
846 return ERR_PTR(-ENOMEM);
847
848 page_list->page_list = (u64 *)(page_list + 1);
849 page_list->max_page_list_len = page_list_len;
850
851 return page_list;
852 }
853
854 static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
855 {
856 kfree(page_list);
857 }
858
859 static int iwch_destroy_qp(struct ib_qp *ib_qp)
860 {
861 struct iwch_dev *rhp;
862 struct iwch_qp *qhp;
863 struct iwch_qp_attributes attrs;
864 struct iwch_ucontext *ucontext;
865
866 qhp = to_iwch_qp(ib_qp);
867 rhp = qhp->rhp;
868
869 attrs.next_state = IWCH_QP_STATE_ERROR;
870 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
871 wait_event(qhp->wait, !qhp->ep);
872
873 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
874
875 atomic_dec(&qhp->refcnt);
876 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
877
878 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
879 : NULL;
880 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
881 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
882
883 PDBG("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
884 ib_qp, qhp->wq.qpid, qhp);
885 kfree(qhp);
886 return 0;
887 }
888
889 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
890 struct ib_qp_init_attr *attrs,
891 struct ib_udata *udata)
892 {
893 struct iwch_dev *rhp;
894 struct iwch_qp *qhp;
895 struct iwch_pd *php;
896 struct iwch_cq *schp;
897 struct iwch_cq *rchp;
898 struct iwch_create_qp_resp uresp;
899 int wqsize, sqsize, rqsize;
900 struct iwch_ucontext *ucontext;
901
902 PDBG("%s ib_pd %p\n", __func__, pd);
903 if (attrs->qp_type != IB_QPT_RC)
904 return ERR_PTR(-EINVAL);
905 php = to_iwch_pd(pd);
906 rhp = php->rhp;
907 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
908 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
909 if (!schp || !rchp)
910 return ERR_PTR(-EINVAL);
911
912 /* The RQT size must be # of entries + 1 rounded up to a power of two */
913 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
914 if (rqsize == attrs->cap.max_recv_wr)
915 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
916
917 /* T3 doesn't support RQT depth < 16 */
918 if (rqsize < 16)
919 rqsize = 16;
920
921 if (rqsize > T3_MAX_RQ_SIZE)
922 return ERR_PTR(-EINVAL);
923
924 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
925 return ERR_PTR(-EINVAL);
926
927 /*
928 * NOTE: The SQ and total WQ sizes don't need to be
929 * a power of two. However, all the code assumes
930 * they are. EG: Q_FREECNT() and friends.
931 */
932 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
933 wqsize = roundup_pow_of_two(rqsize + sqsize);
934
935 /*
936 * Kernel users need more wq space for fastreg WRs which can take
937 * 2 WR fragments.
938 */
939 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
940 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
941 wqsize = roundup_pow_of_two(rqsize +
942 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
943 PDBG("%s wqsize %d sqsize %d rqsize %d\n", __func__,
944 wqsize, sqsize, rqsize);
945 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
946 if (!qhp)
947 return ERR_PTR(-ENOMEM);
948 qhp->wq.size_log2 = ilog2(wqsize);
949 qhp->wq.rq_size_log2 = ilog2(rqsize);
950 qhp->wq.sq_size_log2 = ilog2(sqsize);
951 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
952 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
953 kfree(qhp);
954 return ERR_PTR(-ENOMEM);
955 }
956
957 attrs->cap.max_recv_wr = rqsize - 1;
958 attrs->cap.max_send_wr = sqsize;
959 attrs->cap.max_inline_data = T3_MAX_INLINE;
960
961 qhp->rhp = rhp;
962 qhp->attr.pd = php->pdid;
963 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
964 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
965 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
966 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
967 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
968 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
969 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
970 qhp->attr.state = IWCH_QP_STATE_IDLE;
971 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
972
973 /*
974 * XXX - These don't get passed in from the openib user
975 * at create time. The CM sets them via a QP modify.
976 * Need to fix... I think the CM should
977 */
978 qhp->attr.enable_rdma_read = 1;
979 qhp->attr.enable_rdma_write = 1;
980 qhp->attr.enable_bind = 1;
981 qhp->attr.max_ord = 1;
982 qhp->attr.max_ird = 1;
983
984 spin_lock_init(&qhp->lock);
985 init_waitqueue_head(&qhp->wait);
986 atomic_set(&qhp->refcnt, 1);
987
988 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
989 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
990 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
991 kfree(qhp);
992 return ERR_PTR(-ENOMEM);
993 }
994
995 if (udata) {
996
997 struct iwch_mm_entry *mm1, *mm2;
998
999 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
1000 if (!mm1) {
1001 iwch_destroy_qp(&qhp->ibqp);
1002 return ERR_PTR(-ENOMEM);
1003 }
1004
1005 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
1006 if (!mm2) {
1007 kfree(mm1);
1008 iwch_destroy_qp(&qhp->ibqp);
1009 return ERR_PTR(-ENOMEM);
1010 }
1011
1012 uresp.qpid = qhp->wq.qpid;
1013 uresp.size_log2 = qhp->wq.size_log2;
1014 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
1015 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
1016 spin_lock(&ucontext->mmap_lock);
1017 uresp.key = ucontext->key;
1018 ucontext->key += PAGE_SIZE;
1019 uresp.db_key = ucontext->key;
1020 ucontext->key += PAGE_SIZE;
1021 spin_unlock(&ucontext->mmap_lock);
1022 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
1023 kfree(mm1);
1024 kfree(mm2);
1025 iwch_destroy_qp(&qhp->ibqp);
1026 return ERR_PTR(-EFAULT);
1027 }
1028 mm1->key = uresp.key;
1029 mm1->addr = virt_to_phys(qhp->wq.queue);
1030 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
1031 insert_mmap(ucontext, mm1);
1032 mm2->key = uresp.db_key;
1033 mm2->addr = qhp->wq.udb & PAGE_MASK;
1034 mm2->len = PAGE_SIZE;
1035 insert_mmap(ucontext, mm2);
1036 }
1037 qhp->ibqp.qp_num = qhp->wq.qpid;
1038 init_timer(&(qhp->timer));
1039 PDBG("%s sq_num_entries %d, rq_num_entries %d "
1040 "qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
1041 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
1042 qhp->wq.qpid, qhp, (unsigned long long) qhp->wq.dma_addr,
1043 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
1044 return &qhp->ibqp;
1045 }
1046
1047 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1048 int attr_mask, struct ib_udata *udata)
1049 {
1050 struct iwch_dev *rhp;
1051 struct iwch_qp *qhp;
1052 enum iwch_qp_attr_mask mask = 0;
1053 struct iwch_qp_attributes attrs;
1054
1055 PDBG("%s ib_qp %p\n", __func__, ibqp);
1056
1057 /* iwarp does not support the RTR state */
1058 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
1059 attr_mask &= ~IB_QP_STATE;
1060
1061 /* Make sure we still have something left to do */
1062 if (!attr_mask)
1063 return 0;
1064
1065 memset(&attrs, 0, sizeof attrs);
1066 qhp = to_iwch_qp(ibqp);
1067 rhp = qhp->rhp;
1068
1069 attrs.next_state = iwch_convert_state(attr->qp_state);
1070 attrs.enable_rdma_read = (attr->qp_access_flags &
1071 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1072 attrs.enable_rdma_write = (attr->qp_access_flags &
1073 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1074 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1075
1076
1077 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1078 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1079 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1080 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1081 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1082
1083 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1084 }
1085
1086 void iwch_qp_add_ref(struct ib_qp *qp)
1087 {
1088 PDBG("%s ib_qp %p\n", __func__, qp);
1089 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1090 }
1091
1092 void iwch_qp_rem_ref(struct ib_qp *qp)
1093 {
1094 PDBG("%s ib_qp %p\n", __func__, qp);
1095 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1096 wake_up(&(to_iwch_qp(qp)->wait));
1097 }
1098
1099 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1100 {
1101 PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1102 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1103 }
1104
1105
1106 static int iwch_query_pkey(struct ib_device *ibdev,
1107 u8 port, u16 index, u16 * pkey)
1108 {
1109 PDBG("%s ibdev %p\n", __func__, ibdev);
1110 *pkey = 0;
1111 return 0;
1112 }
1113
1114 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1115 int index, union ib_gid *gid)
1116 {
1117 struct iwch_dev *dev;
1118
1119 PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
1120 __func__, ibdev, port, index, gid);
1121 dev = to_iwch_dev(ibdev);
1122 BUG_ON(port == 0 || port > 2);
1123 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1124 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1125 return 0;
1126 }
1127
1128 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1129 {
1130 struct ethtool_drvinfo info;
1131 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1132 char *cp, *next;
1133 unsigned fw_maj, fw_min, fw_mic;
1134
1135 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1136
1137 next = info.fw_version + 1;
1138 cp = strsep(&next, ".");
1139 sscanf(cp, "%i", &fw_maj);
1140 cp = strsep(&next, ".");
1141 sscanf(cp, "%i", &fw_min);
1142 cp = strsep(&next, ".");
1143 sscanf(cp, "%i", &fw_mic);
1144
1145 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1146 (fw_mic & 0xffff);
1147 }
1148
1149 static int iwch_query_device(struct ib_device *ibdev,
1150 struct ib_device_attr *props)
1151 {
1152
1153 struct iwch_dev *dev;
1154 PDBG("%s ibdev %p\n", __func__, ibdev);
1155
1156 dev = to_iwch_dev(ibdev);
1157 memset(props, 0, sizeof *props);
1158 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1159 props->hw_ver = dev->rdev.t3cdev_p->type;
1160 props->fw_ver = fw_vers_string_to_u64(dev);
1161 props->device_cap_flags = dev->device_cap_flags;
1162 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1163 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1164 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1165 props->max_mr_size = dev->attr.max_mr_size;
1166 props->max_qp = dev->attr.max_qps;
1167 props->max_qp_wr = dev->attr.max_wrs;
1168 props->max_sge = dev->attr.max_sge_per_wr;
1169 props->max_sge_rd = 1;
1170 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1171 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1172 props->max_cq = dev->attr.max_cqs;
1173 props->max_cqe = dev->attr.max_cqes_per_cq;
1174 props->max_mr = dev->attr.max_mem_regs;
1175 props->max_pd = dev->attr.max_pds;
1176 props->local_ca_ack_delay = 0;
1177 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1178
1179 return 0;
1180 }
1181
1182 static int iwch_query_port(struct ib_device *ibdev,
1183 u8 port, struct ib_port_attr *props)
1184 {
1185 struct iwch_dev *dev;
1186 struct net_device *netdev;
1187 struct in_device *inetdev;
1188
1189 PDBG("%s ibdev %p\n", __func__, ibdev);
1190
1191 dev = to_iwch_dev(ibdev);
1192 netdev = dev->rdev.port_info.lldevs[port-1];
1193
1194 memset(props, 0, sizeof(struct ib_port_attr));
1195 props->max_mtu = IB_MTU_4096;
1196 if (netdev->mtu >= 4096)
1197 props->active_mtu = IB_MTU_4096;
1198 else if (netdev->mtu >= 2048)
1199 props->active_mtu = IB_MTU_2048;
1200 else if (netdev->mtu >= 1024)
1201 props->active_mtu = IB_MTU_1024;
1202 else if (netdev->mtu >= 512)
1203 props->active_mtu = IB_MTU_512;
1204 else
1205 props->active_mtu = IB_MTU_256;
1206
1207 if (!netif_carrier_ok(netdev))
1208 props->state = IB_PORT_DOWN;
1209 else {
1210 inetdev = in_dev_get(netdev);
1211 if (inetdev) {
1212 if (inetdev->ifa_list)
1213 props->state = IB_PORT_ACTIVE;
1214 else
1215 props->state = IB_PORT_INIT;
1216 in_dev_put(inetdev);
1217 } else
1218 props->state = IB_PORT_INIT;
1219 }
1220
1221 props->port_cap_flags =
1222 IB_PORT_CM_SUP |
1223 IB_PORT_SNMP_TUNNEL_SUP |
1224 IB_PORT_REINIT_SUP |
1225 IB_PORT_DEVICE_MGMT_SUP |
1226 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1227 props->gid_tbl_len = 1;
1228 props->pkey_tbl_len = 1;
1229 props->active_width = 2;
1230 props->active_speed = 2;
1231 props->max_msg_sz = -1;
1232
1233 return 0;
1234 }
1235
1236 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1237 char *buf)
1238 {
1239 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1240 ibdev.dev);
1241 PDBG("%s dev 0x%p\n", __func__, dev);
1242 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1243 }
1244
1245 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, char *buf)
1246 {
1247 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1248 ibdev.dev);
1249 struct ethtool_drvinfo info;
1250 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1251
1252 PDBG("%s dev 0x%p\n", __func__, dev);
1253 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1254 return sprintf(buf, "%s\n", info.fw_version);
1255 }
1256
1257 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1258 char *buf)
1259 {
1260 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1261 ibdev.dev);
1262 struct ethtool_drvinfo info;
1263 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1264
1265 PDBG("%s dev 0x%p\n", __func__, dev);
1266 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1267 return sprintf(buf, "%s\n", info.driver);
1268 }
1269
1270 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1271 char *buf)
1272 {
1273 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1274 ibdev.dev);
1275 PDBG("%s dev 0x%p\n", __func__, dev);
1276 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1277 iwch_dev->rdev.rnic_info.pdev->device);
1278 }
1279
1280 static int iwch_get_mib(struct ib_device *ibdev,
1281 union rdma_protocol_stats *stats)
1282 {
1283 struct iwch_dev *dev;
1284 struct tp_mib_stats m;
1285 int ret;
1286
1287 PDBG("%s ibdev %p\n", __func__, ibdev);
1288 dev = to_iwch_dev(ibdev);
1289 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1290 if (ret)
1291 return -ENOSYS;
1292
1293 memset(stats, 0, sizeof *stats);
1294 stats->iw.ipInReceives = ((u64) m.ipInReceive_hi << 32) +
1295 m.ipInReceive_lo;
1296 stats->iw.ipInHdrErrors = ((u64) m.ipInHdrErrors_hi << 32) +
1297 m.ipInHdrErrors_lo;
1298 stats->iw.ipInAddrErrors = ((u64) m.ipInAddrErrors_hi << 32) +
1299 m.ipInAddrErrors_lo;
1300 stats->iw.ipInUnknownProtos = ((u64) m.ipInUnknownProtos_hi << 32) +
1301 m.ipInUnknownProtos_lo;
1302 stats->iw.ipInDiscards = ((u64) m.ipInDiscards_hi << 32) +
1303 m.ipInDiscards_lo;
1304 stats->iw.ipInDelivers = ((u64) m.ipInDelivers_hi << 32) +
1305 m.ipInDelivers_lo;
1306 stats->iw.ipOutRequests = ((u64) m.ipOutRequests_hi << 32) +
1307 m.ipOutRequests_lo;
1308 stats->iw.ipOutDiscards = ((u64) m.ipOutDiscards_hi << 32) +
1309 m.ipOutDiscards_lo;
1310 stats->iw.ipOutNoRoutes = ((u64) m.ipOutNoRoutes_hi << 32) +
1311 m.ipOutNoRoutes_lo;
1312 stats->iw.ipReasmTimeout = (u64) m.ipReasmTimeout;
1313 stats->iw.ipReasmReqds = (u64) m.ipReasmReqds;
1314 stats->iw.ipReasmOKs = (u64) m.ipReasmOKs;
1315 stats->iw.ipReasmFails = (u64) m.ipReasmFails;
1316 stats->iw.tcpActiveOpens = (u64) m.tcpActiveOpens;
1317 stats->iw.tcpPassiveOpens = (u64) m.tcpPassiveOpens;
1318 stats->iw.tcpAttemptFails = (u64) m.tcpAttemptFails;
1319 stats->iw.tcpEstabResets = (u64) m.tcpEstabResets;
1320 stats->iw.tcpOutRsts = (u64) m.tcpOutRsts;
1321 stats->iw.tcpCurrEstab = (u64) m.tcpCurrEstab;
1322 stats->iw.tcpInSegs = ((u64) m.tcpInSegs_hi << 32) +
1323 m.tcpInSegs_lo;
1324 stats->iw.tcpOutSegs = ((u64) m.tcpOutSegs_hi << 32) +
1325 m.tcpOutSegs_lo;
1326 stats->iw.tcpRetransSegs = ((u64) m.tcpRetransSeg_hi << 32) +
1327 m.tcpRetransSeg_lo;
1328 stats->iw.tcpInErrs = ((u64) m.tcpInErrs_hi << 32) +
1329 m.tcpInErrs_lo;
1330 stats->iw.tcpRtoMin = (u64) m.tcpRtoMin;
1331 stats->iw.tcpRtoMax = (u64) m.tcpRtoMax;
1332 return 0;
1333 }
1334
1335 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1336 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1337 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1338 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1339
1340 static struct device_attribute *iwch_class_attributes[] = {
1341 &dev_attr_hw_rev,
1342 &dev_attr_fw_ver,
1343 &dev_attr_hca_type,
1344 &dev_attr_board_id,
1345 };
1346
1347 int iwch_register_device(struct iwch_dev *dev)
1348 {
1349 int ret;
1350 int i;
1351
1352 PDBG("%s iwch_dev %p\n", __func__, dev);
1353 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1354 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1355 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1356 dev->ibdev.owner = THIS_MODULE;
1357 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1358 IB_DEVICE_MEM_WINDOW |
1359 IB_DEVICE_MEM_MGT_EXTENSIONS;
1360
1361 /* cxgb3 supports STag 0. */
1362 dev->ibdev.local_dma_lkey = 0;
1363
1364 dev->ibdev.uverbs_cmd_mask =
1365 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1366 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1367 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1368 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1369 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1370 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1371 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1372 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1373 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1374 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1375 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1376 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1377 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1378 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1379 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1380 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1381 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1382 dev->ibdev.node_type = RDMA_NODE_RNIC;
1383 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1384 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1385 dev->ibdev.num_comp_vectors = 1;
1386 dev->ibdev.dma_device = &(dev->rdev.rnic_info.pdev->dev);
1387 dev->ibdev.query_device = iwch_query_device;
1388 dev->ibdev.query_port = iwch_query_port;
1389 dev->ibdev.query_pkey = iwch_query_pkey;
1390 dev->ibdev.query_gid = iwch_query_gid;
1391 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1392 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1393 dev->ibdev.mmap = iwch_mmap;
1394 dev->ibdev.alloc_pd = iwch_allocate_pd;
1395 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1396 dev->ibdev.create_ah = iwch_ah_create;
1397 dev->ibdev.destroy_ah = iwch_ah_destroy;
1398 dev->ibdev.create_qp = iwch_create_qp;
1399 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1400 dev->ibdev.destroy_qp = iwch_destroy_qp;
1401 dev->ibdev.create_cq = iwch_create_cq;
1402 dev->ibdev.destroy_cq = iwch_destroy_cq;
1403 dev->ibdev.resize_cq = iwch_resize_cq;
1404 dev->ibdev.poll_cq = iwch_poll_cq;
1405 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1406 dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
1407 dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
1408 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1409 dev->ibdev.dereg_mr = iwch_dereg_mr;
1410 dev->ibdev.alloc_mw = iwch_alloc_mw;
1411 dev->ibdev.bind_mw = iwch_bind_mw;
1412 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1413 dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
1414 dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
1415 dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
1416 dev->ibdev.attach_mcast = iwch_multicast_attach;
1417 dev->ibdev.detach_mcast = iwch_multicast_detach;
1418 dev->ibdev.process_mad = iwch_process_mad;
1419 dev->ibdev.req_notify_cq = iwch_arm_cq;
1420 dev->ibdev.post_send = iwch_post_send;
1421 dev->ibdev.post_recv = iwch_post_receive;
1422 dev->ibdev.get_protocol_stats = iwch_get_mib;
1423 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1424
1425 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1426 if (!dev->ibdev.iwcm)
1427 return -ENOMEM;
1428
1429 dev->ibdev.iwcm->connect = iwch_connect;
1430 dev->ibdev.iwcm->accept = iwch_accept_cr;
1431 dev->ibdev.iwcm->reject = iwch_reject_cr;
1432 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1433 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1434 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1435 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1436 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1437
1438 ret = ib_register_device(&dev->ibdev, NULL);
1439 if (ret)
1440 goto bail1;
1441
1442 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1443 ret = device_create_file(&dev->ibdev.dev,
1444 iwch_class_attributes[i]);
1445 if (ret) {
1446 goto bail2;
1447 }
1448 }
1449 return 0;
1450 bail2:
1451 ib_unregister_device(&dev->ibdev);
1452 bail1:
1453 kfree(dev->ibdev.iwcm);
1454 return ret;
1455 }
1456
1457 void iwch_unregister_device(struct iwch_dev *dev)
1458 {
1459 int i;
1460
1461 PDBG("%s iwch_dev %p\n", __func__, dev);
1462 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1463 device_remove_file(&dev->ibdev.dev,
1464 iwch_class_attributes[i]);
1465 ib_unregister_device(&dev->ibdev);
1466 kfree(dev->ibdev.iwcm);
1467 return;
1468 }