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37#include <rdma/ib_smi.h>
38#include <rdma/ib_umem.h>
39#include <rdma/ib_user_verbs.h>
40
41#include <linux/sched.h>
42#include <linux/mm.h>
43
44#include "mthca_dev.h"
45#include "mthca_cmd.h"
46#include "mthca_user.h"
47#include "mthca_memfree.h"
48
49static void init_query_mad(struct ib_smp *mad)
50{
51 mad->base_version = 1;
52 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
53 mad->class_version = 1;
54 mad->method = IB_MGMT_METHOD_GET;
55}
56
57static int mthca_query_device(struct ib_device *ibdev,
58 struct ib_device_attr *props)
59{
60 struct ib_smp *in_mad = NULL;
61 struct ib_smp *out_mad = NULL;
62 int err = -ENOMEM;
63 struct mthca_dev *mdev = to_mdev(ibdev);
64
65 u8 status;
66
67 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
68 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
69 if (!in_mad || !out_mad)
70 goto out;
71
72 memset(props, 0, sizeof *props);
73
74 props->fw_ver = mdev->fw_ver;
75
76 init_query_mad(in_mad);
77 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
78
79 err = mthca_MAD_IFC(mdev, 1, 1,
80 1, NULL, NULL, in_mad, out_mad,
81 &status);
82 if (err)
83 goto out;
84 if (status) {
85 err = -EINVAL;
86 goto out;
87 }
88
89 props->device_cap_flags = mdev->device_cap_flags;
90 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
91 0xffffff;
92 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
93 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
94 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
95
96 props->max_mr_size = ~0ull;
97 props->page_size_cap = mdev->limits.page_size_cap;
98 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
99 props->max_qp_wr = mdev->limits.max_wqes;
100 props->max_sge = mdev->limits.max_sg;
101 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
102 props->max_cqe = mdev->limits.max_cqes;
103 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
104 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
105 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
106 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
107 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
108 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
109 props->max_srq_wr = mdev->limits.max_srq_wqes;
110 props->max_srq_sge = mdev->limits.max_srq_sge;
111 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
112 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
113 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
114 props->max_pkeys = mdev->limits.pkey_table_len;
115 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
116 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
117 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
118 props->max_mcast_grp;
119
120
121
122
123
124 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
125 props->max_map_per_fmr = 255;
126 else
127 props->max_map_per_fmr =
128 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
129
130 err = 0;
131 out:
132 kfree(in_mad);
133 kfree(out_mad);
134 return err;
135}
136
137static int mthca_query_port(struct ib_device *ibdev,
138 u8 port, struct ib_port_attr *props)
139{
140 struct ib_smp *in_mad = NULL;
141 struct ib_smp *out_mad = NULL;
142 int err = -ENOMEM;
143 u8 status;
144
145 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
146 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
147 if (!in_mad || !out_mad)
148 goto out;
149
150 memset(props, 0, sizeof *props);
151
152 init_query_mad(in_mad);
153 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
154 in_mad->attr_mod = cpu_to_be32(port);
155
156 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
157 port, NULL, NULL, in_mad, out_mad,
158 &status);
159 if (err)
160 goto out;
161 if (status) {
162 err = -EINVAL;
163 goto out;
164 }
165
166 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
167 props->lmc = out_mad->data[34] & 0x7;
168 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
169 props->sm_sl = out_mad->data[36] & 0xf;
170 props->state = out_mad->data[32] & 0xf;
171 props->phys_state = out_mad->data[33] >> 4;
172 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
173 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
174 props->max_msg_sz = 0x80000000;
175 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
176 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
177 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
178 props->active_width = out_mad->data[31] & 0xf;
179 props->active_speed = out_mad->data[35] >> 4;
180 props->max_mtu = out_mad->data[41] & 0xf;
181 props->active_mtu = out_mad->data[36] >> 4;
182 props->subnet_timeout = out_mad->data[51] & 0x1f;
183 props->max_vl_num = out_mad->data[37] >> 4;
184 props->init_type_reply = out_mad->data[41] >> 4;
185
186 out:
187 kfree(in_mad);
188 kfree(out_mad);
189 return err;
190}
191
192static int mthca_modify_device(struct ib_device *ibdev,
193 int mask,
194 struct ib_device_modify *props)
195{
196 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
197 return -EOPNOTSUPP;
198
199 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
200 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
201 return -ERESTARTSYS;
202 memcpy(ibdev->node_desc, props->node_desc, 64);
203 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
204 }
205
206 return 0;
207}
208
209static int mthca_modify_port(struct ib_device *ibdev,
210 u8 port, int port_modify_mask,
211 struct ib_port_modify *props)
212{
213 struct mthca_set_ib_param set_ib;
214 struct ib_port_attr attr;
215 int err;
216 u8 status;
217
218 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
219 return -ERESTARTSYS;
220
221 err = mthca_query_port(ibdev, port, &attr);
222 if (err)
223 goto out;
224
225 set_ib.set_si_guid = 0;
226 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
227
228 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
229 ~props->clr_port_cap_mask;
230
231 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
232 if (err)
233 goto out;
234 if (status) {
235 err = -EINVAL;
236 goto out;
237 }
238
239out:
240 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
241 return err;
242}
243
244static int mthca_query_pkey(struct ib_device *ibdev,
245 u8 port, u16 index, u16 *pkey)
246{
247 struct ib_smp *in_mad = NULL;
248 struct ib_smp *out_mad = NULL;
249 int err = -ENOMEM;
250 u8 status;
251
252 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
253 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
254 if (!in_mad || !out_mad)
255 goto out;
256
257 init_query_mad(in_mad);
258 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
259 in_mad->attr_mod = cpu_to_be32(index / 32);
260
261 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
262 port, NULL, NULL, in_mad, out_mad,
263 &status);
264 if (err)
265 goto out;
266 if (status) {
267 err = -EINVAL;
268 goto out;
269 }
270
271 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
272
273 out:
274 kfree(in_mad);
275 kfree(out_mad);
276 return err;
277}
278
279static int mthca_query_gid(struct ib_device *ibdev, u8 port,
280 int index, union ib_gid *gid)
281{
282 struct ib_smp *in_mad = NULL;
283 struct ib_smp *out_mad = NULL;
284 int err = -ENOMEM;
285 u8 status;
286
287 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
288 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
289 if (!in_mad || !out_mad)
290 goto out;
291
292 init_query_mad(in_mad);
293 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
294 in_mad->attr_mod = cpu_to_be32(port);
295
296 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
297 port, NULL, NULL, in_mad, out_mad,
298 &status);
299 if (err)
300 goto out;
301 if (status) {
302 err = -EINVAL;
303 goto out;
304 }
305
306 memcpy(gid->raw, out_mad->data + 8, 8);
307
308 init_query_mad(in_mad);
309 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
310 in_mad->attr_mod = cpu_to_be32(index / 8);
311
312 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
313 port, NULL, NULL, in_mad, out_mad,
314 &status);
315 if (err)
316 goto out;
317 if (status) {
318 err = -EINVAL;
319 goto out;
320 }
321
322 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
323
324 out:
325 kfree(in_mad);
326 kfree(out_mad);
327 return err;
328}
329
330static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
331 struct ib_udata *udata)
332{
333 struct mthca_alloc_ucontext_resp uresp;
334 struct mthca_ucontext *context;
335 int err;
336
337 memset(&uresp, 0, sizeof uresp);
338
339 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
340 if (mthca_is_memfree(to_mdev(ibdev)))
341 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
342 else
343 uresp.uarc_size = 0;
344
345 context = kmalloc(sizeof *context, GFP_KERNEL);
346 if (!context)
347 return ERR_PTR(-ENOMEM);
348
349 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
350 if (err) {
351 kfree(context);
352 return ERR_PTR(err);
353 }
354
355 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
356 if (IS_ERR(context->db_tab)) {
357 err = PTR_ERR(context->db_tab);
358 mthca_uar_free(to_mdev(ibdev), &context->uar);
359 kfree(context);
360 return ERR_PTR(err);
361 }
362
363 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
364 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
365 mthca_uar_free(to_mdev(ibdev), &context->uar);
366 kfree(context);
367 return ERR_PTR(-EFAULT);
368 }
369
370 context->reg_mr_warned = 0;
371
372 return &context->ibucontext;
373}
374
375static int mthca_dealloc_ucontext(struct ib_ucontext *context)
376{
377 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
378 to_mucontext(context)->db_tab);
379 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
380 kfree(to_mucontext(context));
381
382 return 0;
383}
384
385static int mthca_mmap_uar(struct ib_ucontext *context,
386 struct vm_area_struct *vma)
387{
388 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
389 return -EINVAL;
390
391 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
392
393 if (io_remap_pfn_range(vma, vma->vm_start,
394 to_mucontext(context)->uar.pfn,
395 PAGE_SIZE, vma->vm_page_prot))
396 return -EAGAIN;
397
398 return 0;
399}
400
401static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
402 struct ib_ucontext *context,
403 struct ib_udata *udata)
404{
405 struct mthca_pd *pd;
406 int err;
407
408 pd = kmalloc(sizeof *pd, GFP_KERNEL);
409 if (!pd)
410 return ERR_PTR(-ENOMEM);
411
412 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
413 if (err) {
414 kfree(pd);
415 return ERR_PTR(err);
416 }
417
418 if (context) {
419 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
420 mthca_pd_free(to_mdev(ibdev), pd);
421 kfree(pd);
422 return ERR_PTR(-EFAULT);
423 }
424 }
425
426 return &pd->ibpd;
427}
428
429static int mthca_dealloc_pd(struct ib_pd *pd)
430{
431 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
432 kfree(pd);
433
434 return 0;
435}
436
437static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
438 struct ib_ah_attr *ah_attr)
439{
440 int err;
441 struct mthca_ah *ah;
442
443 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
444 if (!ah)
445 return ERR_PTR(-ENOMEM);
446
447 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
448 if (err) {
449 kfree(ah);
450 return ERR_PTR(err);
451 }
452
453 return &ah->ibah;
454}
455
456static int mthca_ah_destroy(struct ib_ah *ah)
457{
458 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
459 kfree(ah);
460
461 return 0;
462}
463
464static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
465 struct ib_srq_init_attr *init_attr,
466 struct ib_udata *udata)
467{
468 struct mthca_create_srq ucmd;
469 struct mthca_ucontext *context = NULL;
470 struct mthca_srq *srq;
471 int err;
472
473 srq = kmalloc(sizeof *srq, GFP_KERNEL);
474 if (!srq)
475 return ERR_PTR(-ENOMEM);
476
477 if (pd->uobject) {
478 context = to_mucontext(pd->uobject->context);
479
480 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
481 err = -EFAULT;
482 goto err_free;
483 }
484
485 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
486 context->db_tab, ucmd.db_index,
487 ucmd.db_page);
488
489 if (err)
490 goto err_free;
491
492 srq->mr.ibmr.lkey = ucmd.lkey;
493 srq->db_index = ucmd.db_index;
494 }
495
496 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
497 &init_attr->attr, srq);
498
499 if (err && pd->uobject)
500 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
501 context->db_tab, ucmd.db_index);
502
503 if (err)
504 goto err_free;
505
506 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
507 mthca_free_srq(to_mdev(pd->device), srq);
508 err = -EFAULT;
509 goto err_free;
510 }
511
512 return &srq->ibsrq;
513
514err_free:
515 kfree(srq);
516
517 return ERR_PTR(err);
518}
519
520static int mthca_destroy_srq(struct ib_srq *srq)
521{
522 struct mthca_ucontext *context;
523
524 if (srq->uobject) {
525 context = to_mucontext(srq->uobject->context);
526
527 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
528 context->db_tab, to_msrq(srq)->db_index);
529 }
530
531 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
532 kfree(srq);
533
534 return 0;
535}
536
537static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
538 struct ib_qp_init_attr *init_attr,
539 struct ib_udata *udata)
540{
541 struct mthca_create_qp ucmd;
542 struct mthca_qp *qp;
543 int err;
544
545 if (init_attr->create_flags)
546 return ERR_PTR(-EINVAL);
547
548 switch (init_attr->qp_type) {
549 case IB_QPT_RC:
550 case IB_QPT_UC:
551 case IB_QPT_UD:
552 {
553 struct mthca_ucontext *context;
554
555 qp = kmalloc(sizeof *qp, GFP_KERNEL);
556 if (!qp)
557 return ERR_PTR(-ENOMEM);
558
559 if (pd->uobject) {
560 context = to_mucontext(pd->uobject->context);
561
562 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
563 kfree(qp);
564 return ERR_PTR(-EFAULT);
565 }
566
567 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
568 context->db_tab,
569 ucmd.sq_db_index, ucmd.sq_db_page);
570 if (err) {
571 kfree(qp);
572 return ERR_PTR(err);
573 }
574
575 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
576 context->db_tab,
577 ucmd.rq_db_index, ucmd.rq_db_page);
578 if (err) {
579 mthca_unmap_user_db(to_mdev(pd->device),
580 &context->uar,
581 context->db_tab,
582 ucmd.sq_db_index);
583 kfree(qp);
584 return ERR_PTR(err);
585 }
586
587 qp->mr.ibmr.lkey = ucmd.lkey;
588 qp->sq.db_index = ucmd.sq_db_index;
589 qp->rq.db_index = ucmd.rq_db_index;
590 }
591
592 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
593 to_mcq(init_attr->send_cq),
594 to_mcq(init_attr->recv_cq),
595 init_attr->qp_type, init_attr->sq_sig_type,
596 &init_attr->cap, qp);
597
598 if (err && pd->uobject) {
599 context = to_mucontext(pd->uobject->context);
600
601 mthca_unmap_user_db(to_mdev(pd->device),
602 &context->uar,
603 context->db_tab,
604 ucmd.sq_db_index);
605 mthca_unmap_user_db(to_mdev(pd->device),
606 &context->uar,
607 context->db_tab,
608 ucmd.rq_db_index);
609 }
610
611 qp->ibqp.qp_num = qp->qpn;
612 break;
613 }
614 case IB_QPT_SMI:
615 case IB_QPT_GSI:
616 {
617
618 if (pd->uobject)
619 return ERR_PTR(-EINVAL);
620
621 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
622 if (!qp)
623 return ERR_PTR(-ENOMEM);
624
625 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
626
627 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
628 to_mcq(init_attr->send_cq),
629 to_mcq(init_attr->recv_cq),
630 init_attr->sq_sig_type, &init_attr->cap,
631 qp->ibqp.qp_num, init_attr->port_num,
632 to_msqp(qp));
633 break;
634 }
635 default:
636
637 return ERR_PTR(-ENOSYS);
638 }
639
640 if (err) {
641 kfree(qp);
642 return ERR_PTR(err);
643 }
644
645 init_attr->cap.max_send_wr = qp->sq.max;
646 init_attr->cap.max_recv_wr = qp->rq.max;
647 init_attr->cap.max_send_sge = qp->sq.max_gs;
648 init_attr->cap.max_recv_sge = qp->rq.max_gs;
649 init_attr->cap.max_inline_data = qp->max_inline_data;
650
651 return &qp->ibqp;
652}
653
654static int mthca_destroy_qp(struct ib_qp *qp)
655{
656 if (qp->uobject) {
657 mthca_unmap_user_db(to_mdev(qp->device),
658 &to_mucontext(qp->uobject->context)->uar,
659 to_mucontext(qp->uobject->context)->db_tab,
660 to_mqp(qp)->sq.db_index);
661 mthca_unmap_user_db(to_mdev(qp->device),
662 &to_mucontext(qp->uobject->context)->uar,
663 to_mucontext(qp->uobject->context)->db_tab,
664 to_mqp(qp)->rq.db_index);
665 }
666 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
667 kfree(qp);
668 return 0;
669}
670
671static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
672 int comp_vector,
673 struct ib_ucontext *context,
674 struct ib_udata *udata)
675{
676 struct mthca_create_cq ucmd;
677 struct mthca_cq *cq;
678 int nent;
679 int err;
680
681 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
682 return ERR_PTR(-EINVAL);
683
684 if (context) {
685 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
686 return ERR_PTR(-EFAULT);
687
688 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
689 to_mucontext(context)->db_tab,
690 ucmd.set_db_index, ucmd.set_db_page);
691 if (err)
692 return ERR_PTR(err);
693
694 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
695 to_mucontext(context)->db_tab,
696 ucmd.arm_db_index, ucmd.arm_db_page);
697 if (err)
698 goto err_unmap_set;
699 }
700
701 cq = kmalloc(sizeof *cq, GFP_KERNEL);
702 if (!cq) {
703 err = -ENOMEM;
704 goto err_unmap_arm;
705 }
706
707 if (context) {
708 cq->buf.mr.ibmr.lkey = ucmd.lkey;
709 cq->set_ci_db_index = ucmd.set_db_index;
710 cq->arm_db_index = ucmd.arm_db_index;
711 }
712
713 for (nent = 1; nent <= entries; nent <<= 1)
714 ;
715
716 err = mthca_init_cq(to_mdev(ibdev), nent,
717 context ? to_mucontext(context) : NULL,
718 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
719 cq);
720 if (err)
721 goto err_free;
722
723 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
724 mthca_free_cq(to_mdev(ibdev), cq);
725 goto err_free;
726 }
727
728 cq->resize_buf = NULL;
729
730 return &cq->ibcq;
731
732err_free:
733 kfree(cq);
734
735err_unmap_arm:
736 if (context)
737 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
738 to_mucontext(context)->db_tab, ucmd.arm_db_index);
739
740err_unmap_set:
741 if (context)
742 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
743 to_mucontext(context)->db_tab, ucmd.set_db_index);
744
745 return ERR_PTR(err);
746}
747
748static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
749 int entries)
750{
751 int ret;
752
753 spin_lock_irq(&cq->lock);
754 if (cq->resize_buf) {
755 ret = -EBUSY;
756 goto unlock;
757 }
758
759 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
760 if (!cq->resize_buf) {
761 ret = -ENOMEM;
762 goto unlock;
763 }
764
765 cq->resize_buf->state = CQ_RESIZE_ALLOC;
766
767 ret = 0;
768
769unlock:
770 spin_unlock_irq(&cq->lock);
771
772 if (ret)
773 return ret;
774
775 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
776 if (ret) {
777 spin_lock_irq(&cq->lock);
778 kfree(cq->resize_buf);
779 cq->resize_buf = NULL;
780 spin_unlock_irq(&cq->lock);
781 return ret;
782 }
783
784 cq->resize_buf->cqe = entries - 1;
785
786 spin_lock_irq(&cq->lock);
787 cq->resize_buf->state = CQ_RESIZE_READY;
788 spin_unlock_irq(&cq->lock);
789
790 return 0;
791}
792
793static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
794{
795 struct mthca_dev *dev = to_mdev(ibcq->device);
796 struct mthca_cq *cq = to_mcq(ibcq);
797 struct mthca_resize_cq ucmd;
798 u32 lkey;
799 u8 status;
800 int ret;
801
802 if (entries < 1 || entries > dev->limits.max_cqes)
803 return -EINVAL;
804
805 mutex_lock(&cq->mutex);
806
807 entries = roundup_pow_of_two(entries + 1);
808 if (entries == ibcq->cqe + 1) {
809 ret = 0;
810 goto out;
811 }
812
813 if (cq->is_kernel) {
814 ret = mthca_alloc_resize_buf(dev, cq, entries);
815 if (ret)
816 goto out;
817 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
818 } else {
819 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
820 ret = -EFAULT;
821 goto out;
822 }
823 lkey = ucmd.lkey;
824 }
825
826 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
827 if (status)
828 ret = -EINVAL;
829
830 if (ret) {
831 if (cq->resize_buf) {
832 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
833 cq->resize_buf->cqe);
834 kfree(cq->resize_buf);
835 spin_lock_irq(&cq->lock);
836 cq->resize_buf = NULL;
837 spin_unlock_irq(&cq->lock);
838 }
839 goto out;
840 }
841
842 if (cq->is_kernel) {
843 struct mthca_cq_buf tbuf;
844 int tcqe;
845
846 spin_lock_irq(&cq->lock);
847 if (cq->resize_buf->state == CQ_RESIZE_READY) {
848 mthca_cq_resize_copy_cqes(cq);
849 tbuf = cq->buf;
850 tcqe = cq->ibcq.cqe;
851 cq->buf = cq->resize_buf->buf;
852 cq->ibcq.cqe = cq->resize_buf->cqe;
853 } else {
854 tbuf = cq->resize_buf->buf;
855 tcqe = cq->resize_buf->cqe;
856 }
857
858 kfree(cq->resize_buf);
859 cq->resize_buf = NULL;
860 spin_unlock_irq(&cq->lock);
861
862 mthca_free_cq_buf(dev, &tbuf, tcqe);
863 } else
864 ibcq->cqe = entries - 1;
865
866out:
867 mutex_unlock(&cq->mutex);
868
869 return ret;
870}
871
872static int mthca_destroy_cq(struct ib_cq *cq)
873{
874 if (cq->uobject) {
875 mthca_unmap_user_db(to_mdev(cq->device),
876 &to_mucontext(cq->uobject->context)->uar,
877 to_mucontext(cq->uobject->context)->db_tab,
878 to_mcq(cq)->arm_db_index);
879 mthca_unmap_user_db(to_mdev(cq->device),
880 &to_mucontext(cq->uobject->context)->uar,
881 to_mucontext(cq->uobject->context)->db_tab,
882 to_mcq(cq)->set_ci_db_index);
883 }
884 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
885 kfree(cq);
886
887 return 0;
888}
889
890static inline u32 convert_access(int acc)
891{
892 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
893 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
894 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
895 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
896 MTHCA_MPT_FLAG_LOCAL_READ;
897}
898
899static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
900{
901 struct mthca_mr *mr;
902 int err;
903
904 mr = kmalloc(sizeof *mr, GFP_KERNEL);
905 if (!mr)
906 return ERR_PTR(-ENOMEM);
907
908 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
909 to_mpd(pd)->pd_num,
910 convert_access(acc), mr);
911
912 if (err) {
913 kfree(mr);
914 return ERR_PTR(err);
915 }
916
917 mr->umem = NULL;
918
919 return &mr->ibmr;
920}
921
922static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
923 struct ib_phys_buf *buffer_list,
924 int num_phys_buf,
925 int acc,
926 u64 *iova_start)
927{
928 struct mthca_mr *mr;
929 u64 *page_list;
930 u64 total_size;
931 unsigned long mask;
932 int shift;
933 int npages;
934 int err;
935 int i, j, n;
936
937 mask = buffer_list[0].addr ^ *iova_start;
938 total_size = 0;
939 for (i = 0; i < num_phys_buf; ++i) {
940 if (i != 0)
941 mask |= buffer_list[i].addr;
942 if (i != num_phys_buf - 1)
943 mask |= buffer_list[i].addr + buffer_list[i].size;
944
945 total_size += buffer_list[i].size;
946 }
947
948 if (mask & ~PAGE_MASK)
949 return ERR_PTR(-EINVAL);
950
951 shift = __ffs(mask | 1 << 31);
952
953 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
954 buffer_list[0].addr &= ~0ull << shift;
955
956 mr = kmalloc(sizeof *mr, GFP_KERNEL);
957 if (!mr)
958 return ERR_PTR(-ENOMEM);
959
960 npages = 0;
961 for (i = 0; i < num_phys_buf; ++i)
962 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
963
964 if (!npages)
965 return &mr->ibmr;
966
967 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
968 if (!page_list) {
969 kfree(mr);
970 return ERR_PTR(-ENOMEM);
971 }
972
973 n = 0;
974 for (i = 0; i < num_phys_buf; ++i)
975 for (j = 0;
976 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
977 ++j)
978 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
979
980 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
981 "in PD %x; shift %d, npages %d.\n",
982 (unsigned long long) buffer_list[0].addr,
983 (unsigned long long) *iova_start,
984 to_mpd(pd)->pd_num,
985 shift, npages);
986
987 err = mthca_mr_alloc_phys(to_mdev(pd->device),
988 to_mpd(pd)->pd_num,
989 page_list, shift, npages,
990 *iova_start, total_size,
991 convert_access(acc), mr);
992
993 if (err) {
994 kfree(page_list);
995 kfree(mr);
996 return ERR_PTR(err);
997 }
998
999 kfree(page_list);
1000 mr->umem = NULL;
1001
1002 return &mr->ibmr;
1003}
1004
1005static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1006 u64 virt, int acc, struct ib_udata *udata)
1007{
1008 struct mthca_dev *dev = to_mdev(pd->device);
1009 struct ib_umem_chunk *chunk;
1010 struct mthca_mr *mr;
1011 struct mthca_reg_mr ucmd;
1012 u64 *pages;
1013 int shift, n, len;
1014 int i, j, k;
1015 int err = 0;
1016 int write_mtt_size;
1017
1018 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
1019 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
1020 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1021 current->comm);
1022 mthca_warn(dev, " Update libmthca to fix this.\n");
1023 }
1024 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1025 ucmd.mr_attrs = 0;
1026 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1027 return ERR_PTR(-EFAULT);
1028
1029 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1030 if (!mr)
1031 return ERR_PTR(-ENOMEM);
1032
1033 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1034 ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1035
1036 if (IS_ERR(mr->umem)) {
1037 err = PTR_ERR(mr->umem);
1038 goto err;
1039 }
1040
1041 shift = ffs(mr->umem->page_size) - 1;
1042
1043 n = 0;
1044 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1045 n += chunk->nents;
1046
1047 mr->mtt = mthca_alloc_mtt(dev, n);
1048 if (IS_ERR(mr->mtt)) {
1049 err = PTR_ERR(mr->mtt);
1050 goto err_umem;
1051 }
1052
1053 pages = (u64 *) __get_free_page(GFP_KERNEL);
1054 if (!pages) {
1055 err = -ENOMEM;
1056 goto err_mtt;
1057 }
1058
1059 i = n = 0;
1060
1061 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1062
1063 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1064 for (j = 0; j < chunk->nmap; ++j) {
1065 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1066 for (k = 0; k < len; ++k) {
1067 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1068 mr->umem->page_size * k;
1069
1070
1071
1072
1073 if (i == write_mtt_size) {
1074 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1075 if (err)
1076 goto mtt_done;
1077 n += i;
1078 i = 0;
1079 }
1080 }
1081 }
1082
1083 if (i)
1084 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1085mtt_done:
1086 free_page((unsigned long) pages);
1087 if (err)
1088 goto err_mtt;
1089
1090 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1091 convert_access(acc), mr);
1092
1093 if (err)
1094 goto err_mtt;
1095
1096 return &mr->ibmr;
1097
1098err_mtt:
1099 mthca_free_mtt(dev, mr->mtt);
1100
1101err_umem:
1102 ib_umem_release(mr->umem);
1103
1104err:
1105 kfree(mr);
1106 return ERR_PTR(err);
1107}
1108
1109static int mthca_dereg_mr(struct ib_mr *mr)
1110{
1111 struct mthca_mr *mmr = to_mmr(mr);
1112
1113 mthca_free_mr(to_mdev(mr->device), mmr);
1114 if (mmr->umem)
1115 ib_umem_release(mmr->umem);
1116 kfree(mmr);
1117
1118 return 0;
1119}
1120
1121static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1122 struct ib_fmr_attr *fmr_attr)
1123{
1124 struct mthca_fmr *fmr;
1125 int err;
1126
1127 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1128 if (!fmr)
1129 return ERR_PTR(-ENOMEM);
1130
1131 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1132 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1133 convert_access(mr_access_flags), fmr);
1134
1135 if (err) {
1136 kfree(fmr);
1137 return ERR_PTR(err);
1138 }
1139
1140 return &fmr->ibmr;
1141}
1142
1143static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1144{
1145 struct mthca_fmr *mfmr = to_mfmr(fmr);
1146 int err;
1147
1148 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1149 if (err)
1150 return err;
1151
1152 kfree(mfmr);
1153 return 0;
1154}
1155
1156static int mthca_unmap_fmr(struct list_head *fmr_list)
1157{
1158 struct ib_fmr *fmr;
1159 int err;
1160 u8 status;
1161 struct mthca_dev *mdev = NULL;
1162
1163 list_for_each_entry(fmr, fmr_list, list) {
1164 if (mdev && to_mdev(fmr->device) != mdev)
1165 return -EINVAL;
1166 mdev = to_mdev(fmr->device);
1167 }
1168
1169 if (!mdev)
1170 return 0;
1171
1172 if (mthca_is_memfree(mdev)) {
1173 list_for_each_entry(fmr, fmr_list, list)
1174 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1175
1176 wmb();
1177 } else
1178 list_for_each_entry(fmr, fmr_list, list)
1179 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1180
1181 err = mthca_SYNC_TPT(mdev, &status);
1182 if (err)
1183 return err;
1184 if (status)
1185 return -EINVAL;
1186 return 0;
1187}
1188
1189static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1190 char *buf)
1191{
1192 struct mthca_dev *dev =
1193 container_of(device, struct mthca_dev, ib_dev.dev);
1194 return sprintf(buf, "%x\n", dev->rev_id);
1195}
1196
1197static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1198 char *buf)
1199{
1200 struct mthca_dev *dev =
1201 container_of(device, struct mthca_dev, ib_dev.dev);
1202 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1203 (int) (dev->fw_ver >> 16) & 0xffff,
1204 (int) dev->fw_ver & 0xffff);
1205}
1206
1207static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1208 char *buf)
1209{
1210 struct mthca_dev *dev =
1211 container_of(device, struct mthca_dev, ib_dev.dev);
1212 switch (dev->pdev->device) {
1213 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1214 return sprintf(buf, "MT23108\n");
1215 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1216 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1217 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1218 return sprintf(buf, "MT25208\n");
1219 case PCI_DEVICE_ID_MELLANOX_SINAI:
1220 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1221 return sprintf(buf, "MT25204\n");
1222 default:
1223 return sprintf(buf, "unknown\n");
1224 }
1225}
1226
1227static ssize_t show_board(struct device *device, struct device_attribute *attr,
1228 char *buf)
1229{
1230 struct mthca_dev *dev =
1231 container_of(device, struct mthca_dev, ib_dev.dev);
1232 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1233}
1234
1235static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1236static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1237static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1238static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1239
1240static struct device_attribute *mthca_dev_attributes[] = {
1241 &dev_attr_hw_rev,
1242 &dev_attr_fw_ver,
1243 &dev_attr_hca_type,
1244 &dev_attr_board_id
1245};
1246
1247static int mthca_init_node_data(struct mthca_dev *dev)
1248{
1249 struct ib_smp *in_mad = NULL;
1250 struct ib_smp *out_mad = NULL;
1251 int err = -ENOMEM;
1252 u8 status;
1253
1254 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1255 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1256 if (!in_mad || !out_mad)
1257 goto out;
1258
1259 init_query_mad(in_mad);
1260 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1261
1262 err = mthca_MAD_IFC(dev, 1, 1,
1263 1, NULL, NULL, in_mad, out_mad,
1264 &status);
1265 if (err)
1266 goto out;
1267 if (status) {
1268 err = -EINVAL;
1269 goto out;
1270 }
1271
1272 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1273
1274 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1275
1276 err = mthca_MAD_IFC(dev, 1, 1,
1277 1, NULL, NULL, in_mad, out_mad,
1278 &status);
1279 if (err)
1280 goto out;
1281 if (status) {
1282 err = -EINVAL;
1283 goto out;
1284 }
1285
1286 if (mthca_is_memfree(dev))
1287 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1288 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1289
1290out:
1291 kfree(in_mad);
1292 kfree(out_mad);
1293 return err;
1294}
1295
1296int mthca_register_device(struct mthca_dev *dev)
1297{
1298 int ret;
1299 int i;
1300
1301 ret = mthca_init_node_data(dev);
1302 if (ret)
1303 return ret;
1304
1305 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1306 dev->ib_dev.owner = THIS_MODULE;
1307
1308 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1309 dev->ib_dev.uverbs_cmd_mask =
1310 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1311 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1312 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1313 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1314 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1315 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1316 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1317 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1318 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1319 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1320 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1321 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1322 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1323 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1324 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1325 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1326 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1327 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1328 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1329 dev->ib_dev.num_comp_vectors = 1;
1330 dev->ib_dev.dma_device = &dev->pdev->dev;
1331 dev->ib_dev.query_device = mthca_query_device;
1332 dev->ib_dev.query_port = mthca_query_port;
1333 dev->ib_dev.modify_device = mthca_modify_device;
1334 dev->ib_dev.modify_port = mthca_modify_port;
1335 dev->ib_dev.query_pkey = mthca_query_pkey;
1336 dev->ib_dev.query_gid = mthca_query_gid;
1337 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1338 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1339 dev->ib_dev.mmap = mthca_mmap_uar;
1340 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1341 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1342 dev->ib_dev.create_ah = mthca_ah_create;
1343 dev->ib_dev.query_ah = mthca_ah_query;
1344 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1345
1346 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1347 dev->ib_dev.create_srq = mthca_create_srq;
1348 dev->ib_dev.modify_srq = mthca_modify_srq;
1349 dev->ib_dev.query_srq = mthca_query_srq;
1350 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1351 dev->ib_dev.uverbs_cmd_mask |=
1352 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1353 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1354 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1355 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1356
1357 if (mthca_is_memfree(dev))
1358 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1359 else
1360 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1361 }
1362
1363 dev->ib_dev.create_qp = mthca_create_qp;
1364 dev->ib_dev.modify_qp = mthca_modify_qp;
1365 dev->ib_dev.query_qp = mthca_query_qp;
1366 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1367 dev->ib_dev.create_cq = mthca_create_cq;
1368 dev->ib_dev.resize_cq = mthca_resize_cq;
1369 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1370 dev->ib_dev.poll_cq = mthca_poll_cq;
1371 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1372 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1373 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1374 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1375
1376 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1377 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1378 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1379 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1380 if (mthca_is_memfree(dev))
1381 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1382 else
1383 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1384 }
1385
1386 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1387 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1388 dev->ib_dev.process_mad = mthca_process_mad;
1389
1390 if (mthca_is_memfree(dev)) {
1391 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1392 dev->ib_dev.post_send = mthca_arbel_post_send;
1393 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1394 } else {
1395 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1396 dev->ib_dev.post_send = mthca_tavor_post_send;
1397 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1398 }
1399
1400 mutex_init(&dev->cap_mask_mutex);
1401
1402 ret = ib_register_device(&dev->ib_dev);
1403 if (ret)
1404 return ret;
1405
1406 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1407 ret = device_create_file(&dev->ib_dev.dev,
1408 mthca_dev_attributes[i]);
1409 if (ret) {
1410 ib_unregister_device(&dev->ib_dev);
1411 return ret;
1412 }
1413 }
1414
1415 mthca_start_catas_poll(dev);
1416
1417 return 0;
1418}
1419
1420void mthca_unregister_device(struct mthca_dev *dev)
1421{
1422 mthca_stop_catas_poll(dev);
1423 ib_unregister_device(&dev->ib_dev);
1424}
1425
