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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/slab.h>
43#include <linux/mm.h>
44
45#include "mthca_dev.h"
46#include "mthca_cmd.h"
47#include "mthca_user.h"
48#include "mthca_memfree.h"
49
50static void init_query_mad(struct ib_smp *mad)
51{
52 mad->base_version = 1;
53 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
54 mad->class_version = 1;
55 mad->method = IB_MGMT_METHOD_GET;
56}
57
58static int mthca_query_device(struct ib_device *ibdev,
59 struct ib_device_attr *props)
60{
61 struct ib_smp *in_mad = NULL;
62 struct ib_smp *out_mad = NULL;
63 int err = -ENOMEM;
64 struct mthca_dev *mdev = to_mdev(ibdev);
65
66 u8 status;
67
68 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
69 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
70 if (!in_mad || !out_mad)
71 goto out;
72
73 memset(props, 0, sizeof *props);
74
75 props->fw_ver = mdev->fw_ver;
76
77 init_query_mad(in_mad);
78 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
79
80 err = mthca_MAD_IFC(mdev, 1, 1,
81 1, NULL, NULL, in_mad, out_mad,
82 &status);
83 if (err)
84 goto out;
85 if (status) {
86 err = -EINVAL;
87 goto out;
88 }
89
90 props->device_cap_flags = mdev->device_cap_flags;
91 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
92 0xffffff;
93 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
94 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
95 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
96
97 props->max_mr_size = ~0ull;
98 props->page_size_cap = mdev->limits.page_size_cap;
99 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
100 props->max_qp_wr = mdev->limits.max_wqes;
101 props->max_sge = mdev->limits.max_sg;
102 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
103 props->max_cqe = mdev->limits.max_cqes;
104 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
105 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
106 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
107 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
108 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
109 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
110 props->max_srq_wr = mdev->limits.max_srq_wqes;
111 props->max_srq_sge = mdev->limits.max_srq_sge;
112 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
113 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
114 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
115 props->max_pkeys = mdev->limits.pkey_table_len;
116 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
117 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
118 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
119 props->max_mcast_grp;
120
121
122
123
124
125 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
126 props->max_map_per_fmr = 255;
127 else
128 props->max_map_per_fmr =
129 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
130
131 err = 0;
132 out:
133 kfree(in_mad);
134 kfree(out_mad);
135 return err;
136}
137
138static int mthca_query_port(struct ib_device *ibdev,
139 u8 port, struct ib_port_attr *props)
140{
141 struct ib_smp *in_mad = NULL;
142 struct ib_smp *out_mad = NULL;
143 int err = -ENOMEM;
144 u8 status;
145
146 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
147 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
148 if (!in_mad || !out_mad)
149 goto out;
150
151 memset(props, 0, sizeof *props);
152
153 init_query_mad(in_mad);
154 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
155 in_mad->attr_mod = cpu_to_be32(port);
156
157 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
158 port, NULL, NULL, in_mad, out_mad,
159 &status);
160 if (err)
161 goto out;
162 if (status) {
163 err = -EINVAL;
164 goto out;
165 }
166
167 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
168 props->lmc = out_mad->data[34] & 0x7;
169 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
170 props->sm_sl = out_mad->data[36] & 0xf;
171 props->state = out_mad->data[32] & 0xf;
172 props->phys_state = out_mad->data[33] >> 4;
173 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
174 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
175 props->max_msg_sz = 0x80000000;
176 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
177 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
178 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
179 props->active_width = out_mad->data[31] & 0xf;
180 props->active_speed = out_mad->data[35] >> 4;
181 props->max_mtu = out_mad->data[41] & 0xf;
182 props->active_mtu = out_mad->data[36] >> 4;
183 props->subnet_timeout = out_mad->data[51] & 0x1f;
184 props->max_vl_num = out_mad->data[37] >> 4;
185 props->init_type_reply = out_mad->data[41] >> 4;
186
187 out:
188 kfree(in_mad);
189 kfree(out_mad);
190 return err;
191}
192
193static int mthca_modify_device(struct ib_device *ibdev,
194 int mask,
195 struct ib_device_modify *props)
196{
197 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
198 return -EOPNOTSUPP;
199
200 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
201 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
202 return -ERESTARTSYS;
203 memcpy(ibdev->node_desc, props->node_desc, 64);
204 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
205 }
206
207 return 0;
208}
209
210static int mthca_modify_port(struct ib_device *ibdev,
211 u8 port, int port_modify_mask,
212 struct ib_port_modify *props)
213{
214 struct mthca_set_ib_param set_ib;
215 struct ib_port_attr attr;
216 int err;
217 u8 status;
218
219 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
220 return -ERESTARTSYS;
221
222 err = mthca_query_port(ibdev, port, &attr);
223 if (err)
224 goto out;
225
226 set_ib.set_si_guid = 0;
227 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
228
229 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
230 ~props->clr_port_cap_mask;
231
232 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
233 if (err)
234 goto out;
235 if (status) {
236 err = -EINVAL;
237 goto out;
238 }
239
240out:
241 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
242 return err;
243}
244
245static int mthca_query_pkey(struct ib_device *ibdev,
246 u8 port, u16 index, u16 *pkey)
247{
248 struct ib_smp *in_mad = NULL;
249 struct ib_smp *out_mad = NULL;
250 int err = -ENOMEM;
251 u8 status;
252
253 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
254 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
255 if (!in_mad || !out_mad)
256 goto out;
257
258 init_query_mad(in_mad);
259 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
260 in_mad->attr_mod = cpu_to_be32(index / 32);
261
262 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
263 port, NULL, NULL, in_mad, out_mad,
264 &status);
265 if (err)
266 goto out;
267 if (status) {
268 err = -EINVAL;
269 goto out;
270 }
271
272 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
273
274 out:
275 kfree(in_mad);
276 kfree(out_mad);
277 return err;
278}
279
280static int mthca_query_gid(struct ib_device *ibdev, u8 port,
281 int index, union ib_gid *gid)
282{
283 struct ib_smp *in_mad = NULL;
284 struct ib_smp *out_mad = NULL;
285 int err = -ENOMEM;
286 u8 status;
287
288 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
289 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
290 if (!in_mad || !out_mad)
291 goto out;
292
293 init_query_mad(in_mad);
294 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
295 in_mad->attr_mod = cpu_to_be32(port);
296
297 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
298 port, NULL, NULL, in_mad, out_mad,
299 &status);
300 if (err)
301 goto out;
302 if (status) {
303 err = -EINVAL;
304 goto out;
305 }
306
307 memcpy(gid->raw, out_mad->data + 8, 8);
308
309 init_query_mad(in_mad);
310 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
311 in_mad->attr_mod = cpu_to_be32(index / 8);
312
313 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
314 port, NULL, NULL, in_mad, out_mad,
315 &status);
316 if (err)
317 goto out;
318 if (status) {
319 err = -EINVAL;
320 goto out;
321 }
322
323 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
324
325 out:
326 kfree(in_mad);
327 kfree(out_mad);
328 return err;
329}
330
331static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
332 struct ib_udata *udata)
333{
334 struct mthca_alloc_ucontext_resp uresp;
335 struct mthca_ucontext *context;
336 int err;
337
338 if (!(to_mdev(ibdev)->active))
339 return ERR_PTR(-EAGAIN);
340
341 memset(&uresp, 0, sizeof uresp);
342
343 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
344 if (mthca_is_memfree(to_mdev(ibdev)))
345 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
346 else
347 uresp.uarc_size = 0;
348
349 context = kmalloc(sizeof *context, GFP_KERNEL);
350 if (!context)
351 return ERR_PTR(-ENOMEM);
352
353 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
354 if (err) {
355 kfree(context);
356 return ERR_PTR(err);
357 }
358
359 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
360 if (IS_ERR(context->db_tab)) {
361 err = PTR_ERR(context->db_tab);
362 mthca_uar_free(to_mdev(ibdev), &context->uar);
363 kfree(context);
364 return ERR_PTR(err);
365 }
366
367 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
368 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
369 mthca_uar_free(to_mdev(ibdev), &context->uar);
370 kfree(context);
371 return ERR_PTR(-EFAULT);
372 }
373
374 context->reg_mr_warned = 0;
375
376 return &context->ibucontext;
377}
378
379static int mthca_dealloc_ucontext(struct ib_ucontext *context)
380{
381 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
382 to_mucontext(context)->db_tab);
383 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
384 kfree(to_mucontext(context));
385
386 return 0;
387}
388
389static int mthca_mmap_uar(struct ib_ucontext *context,
390 struct vm_area_struct *vma)
391{
392 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
393 return -EINVAL;
394
395 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
396
397 if (io_remap_pfn_range(vma, vma->vm_start,
398 to_mucontext(context)->uar.pfn,
399 PAGE_SIZE, vma->vm_page_prot))
400 return -EAGAIN;
401
402 return 0;
403}
404
405static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
406 struct ib_ucontext *context,
407 struct ib_udata *udata)
408{
409 struct mthca_pd *pd;
410 int err;
411
412 pd = kmalloc(sizeof *pd, GFP_KERNEL);
413 if (!pd)
414 return ERR_PTR(-ENOMEM);
415
416 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
417 if (err) {
418 kfree(pd);
419 return ERR_PTR(err);
420 }
421
422 if (context) {
423 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
424 mthca_pd_free(to_mdev(ibdev), pd);
425 kfree(pd);
426 return ERR_PTR(-EFAULT);
427 }
428 }
429
430 return &pd->ibpd;
431}
432
433static int mthca_dealloc_pd(struct ib_pd *pd)
434{
435 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
436 kfree(pd);
437
438 return 0;
439}
440
441static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
442 struct ib_ah_attr *ah_attr)
443{
444 int err;
445 struct mthca_ah *ah;
446
447 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
448 if (!ah)
449 return ERR_PTR(-ENOMEM);
450
451 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
452 if (err) {
453 kfree(ah);
454 return ERR_PTR(err);
455 }
456
457 return &ah->ibah;
458}
459
460static int mthca_ah_destroy(struct ib_ah *ah)
461{
462 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
463 kfree(ah);
464
465 return 0;
466}
467
468static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
469 struct ib_srq_init_attr *init_attr,
470 struct ib_udata *udata)
471{
472 struct mthca_create_srq ucmd;
473 struct mthca_ucontext *context = NULL;
474 struct mthca_srq *srq;
475 int err;
476
477 srq = kmalloc(sizeof *srq, GFP_KERNEL);
478 if (!srq)
479 return ERR_PTR(-ENOMEM);
480
481 if (pd->uobject) {
482 context = to_mucontext(pd->uobject->context);
483
484 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
485 err = -EFAULT;
486 goto err_free;
487 }
488
489 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
490 context->db_tab, ucmd.db_index,
491 ucmd.db_page);
492
493 if (err)
494 goto err_free;
495
496 srq->mr.ibmr.lkey = ucmd.lkey;
497 srq->db_index = ucmd.db_index;
498 }
499
500 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
501 &init_attr->attr, srq);
502
503 if (err && pd->uobject)
504 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
505 context->db_tab, ucmd.db_index);
506
507 if (err)
508 goto err_free;
509
510 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
511 mthca_free_srq(to_mdev(pd->device), srq);
512 err = -EFAULT;
513 goto err_free;
514 }
515
516 return &srq->ibsrq;
517
518err_free:
519 kfree(srq);
520
521 return ERR_PTR(err);
522}
523
524static int mthca_destroy_srq(struct ib_srq *srq)
525{
526 struct mthca_ucontext *context;
527
528 if (srq->uobject) {
529 context = to_mucontext(srq->uobject->context);
530
531 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
532 context->db_tab, to_msrq(srq)->db_index);
533 }
534
535 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
536 kfree(srq);
537
538 return 0;
539}
540
541static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
542 struct ib_qp_init_attr *init_attr,
543 struct ib_udata *udata)
544{
545 struct mthca_create_qp ucmd;
546 struct mthca_qp *qp;
547 int err;
548
549 if (init_attr->create_flags)
550 return ERR_PTR(-EINVAL);
551
552 switch (init_attr->qp_type) {
553 case IB_QPT_RC:
554 case IB_QPT_UC:
555 case IB_QPT_UD:
556 {
557 struct mthca_ucontext *context;
558
559 qp = kmalloc(sizeof *qp, GFP_KERNEL);
560 if (!qp)
561 return ERR_PTR(-ENOMEM);
562
563 if (pd->uobject) {
564 context = to_mucontext(pd->uobject->context);
565
566 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
567 kfree(qp);
568 return ERR_PTR(-EFAULT);
569 }
570
571 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
572 context->db_tab,
573 ucmd.sq_db_index, ucmd.sq_db_page);
574 if (err) {
575 kfree(qp);
576 return ERR_PTR(err);
577 }
578
579 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
580 context->db_tab,
581 ucmd.rq_db_index, ucmd.rq_db_page);
582 if (err) {
583 mthca_unmap_user_db(to_mdev(pd->device),
584 &context->uar,
585 context->db_tab,
586 ucmd.sq_db_index);
587 kfree(qp);
588 return ERR_PTR(err);
589 }
590
591 qp->mr.ibmr.lkey = ucmd.lkey;
592 qp->sq.db_index = ucmd.sq_db_index;
593 qp->rq.db_index = ucmd.rq_db_index;
594 }
595
596 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
597 to_mcq(init_attr->send_cq),
598 to_mcq(init_attr->recv_cq),
599 init_attr->qp_type, init_attr->sq_sig_type,
600 &init_attr->cap, qp);
601
602 if (err && pd->uobject) {
603 context = to_mucontext(pd->uobject->context);
604
605 mthca_unmap_user_db(to_mdev(pd->device),
606 &context->uar,
607 context->db_tab,
608 ucmd.sq_db_index);
609 mthca_unmap_user_db(to_mdev(pd->device),
610 &context->uar,
611 context->db_tab,
612 ucmd.rq_db_index);
613 }
614
615 qp->ibqp.qp_num = qp->qpn;
616 break;
617 }
618 case IB_QPT_SMI:
619 case IB_QPT_GSI:
620 {
621
622 if (pd->uobject)
623 return ERR_PTR(-EINVAL);
624
625 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
626 if (!qp)
627 return ERR_PTR(-ENOMEM);
628
629 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
630
631 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
632 to_mcq(init_attr->send_cq),
633 to_mcq(init_attr->recv_cq),
634 init_attr->sq_sig_type, &init_attr->cap,
635 qp->ibqp.qp_num, init_attr->port_num,
636 to_msqp(qp));
637 break;
638 }
639 default:
640
641 return ERR_PTR(-ENOSYS);
642 }
643
644 if (err) {
645 kfree(qp);
646 return ERR_PTR(err);
647 }
648
649 init_attr->cap.max_send_wr = qp->sq.max;
650 init_attr->cap.max_recv_wr = qp->rq.max;
651 init_attr->cap.max_send_sge = qp->sq.max_gs;
652 init_attr->cap.max_recv_sge = qp->rq.max_gs;
653 init_attr->cap.max_inline_data = qp->max_inline_data;
654
655 return &qp->ibqp;
656}
657
658static int mthca_destroy_qp(struct ib_qp *qp)
659{
660 if (qp->uobject) {
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)->sq.db_index);
665 mthca_unmap_user_db(to_mdev(qp->device),
666 &to_mucontext(qp->uobject->context)->uar,
667 to_mucontext(qp->uobject->context)->db_tab,
668 to_mqp(qp)->rq.db_index);
669 }
670 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
671 kfree(qp);
672 return 0;
673}
674
675static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
676 int comp_vector,
677 struct ib_ucontext *context,
678 struct ib_udata *udata)
679{
680 struct mthca_create_cq ucmd;
681 struct mthca_cq *cq;
682 int nent;
683 int err;
684
685 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
686 return ERR_PTR(-EINVAL);
687
688 if (context) {
689 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
690 return ERR_PTR(-EFAULT);
691
692 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
693 to_mucontext(context)->db_tab,
694 ucmd.set_db_index, ucmd.set_db_page);
695 if (err)
696 return ERR_PTR(err);
697
698 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
699 to_mucontext(context)->db_tab,
700 ucmd.arm_db_index, ucmd.arm_db_page);
701 if (err)
702 goto err_unmap_set;
703 }
704
705 cq = kmalloc(sizeof *cq, GFP_KERNEL);
706 if (!cq) {
707 err = -ENOMEM;
708 goto err_unmap_arm;
709 }
710
711 if (context) {
712 cq->buf.mr.ibmr.lkey = ucmd.lkey;
713 cq->set_ci_db_index = ucmd.set_db_index;
714 cq->arm_db_index = ucmd.arm_db_index;
715 }
716
717 for (nent = 1; nent <= entries; nent <<= 1)
718 ;
719
720 err = mthca_init_cq(to_mdev(ibdev), nent,
721 context ? to_mucontext(context) : NULL,
722 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
723 cq);
724 if (err)
725 goto err_free;
726
727 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
728 mthca_free_cq(to_mdev(ibdev), cq);
729 goto err_free;
730 }
731
732 cq->resize_buf = NULL;
733
734 return &cq->ibcq;
735
736err_free:
737 kfree(cq);
738
739err_unmap_arm:
740 if (context)
741 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
742 to_mucontext(context)->db_tab, ucmd.arm_db_index);
743
744err_unmap_set:
745 if (context)
746 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
747 to_mucontext(context)->db_tab, ucmd.set_db_index);
748
749 return ERR_PTR(err);
750}
751
752static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
753 int entries)
754{
755 int ret;
756
757 spin_lock_irq(&cq->lock);
758 if (cq->resize_buf) {
759 ret = -EBUSY;
760 goto unlock;
761 }
762
763 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
764 if (!cq->resize_buf) {
765 ret = -ENOMEM;
766 goto unlock;
767 }
768
769 cq->resize_buf->state = CQ_RESIZE_ALLOC;
770
771 ret = 0;
772
773unlock:
774 spin_unlock_irq(&cq->lock);
775
776 if (ret)
777 return ret;
778
779 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
780 if (ret) {
781 spin_lock_irq(&cq->lock);
782 kfree(cq->resize_buf);
783 cq->resize_buf = NULL;
784 spin_unlock_irq(&cq->lock);
785 return ret;
786 }
787
788 cq->resize_buf->cqe = entries - 1;
789
790 spin_lock_irq(&cq->lock);
791 cq->resize_buf->state = CQ_RESIZE_READY;
792 spin_unlock_irq(&cq->lock);
793
794 return 0;
795}
796
797static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
798{
799 struct mthca_dev *dev = to_mdev(ibcq->device);
800 struct mthca_cq *cq = to_mcq(ibcq);
801 struct mthca_resize_cq ucmd;
802 u32 lkey;
803 u8 status;
804 int ret;
805
806 if (entries < 1 || entries > dev->limits.max_cqes)
807 return -EINVAL;
808
809 mutex_lock(&cq->mutex);
810
811 entries = roundup_pow_of_two(entries + 1);
812 if (entries == ibcq->cqe + 1) {
813 ret = 0;
814 goto out;
815 }
816
817 if (cq->is_kernel) {
818 ret = mthca_alloc_resize_buf(dev, cq, entries);
819 if (ret)
820 goto out;
821 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
822 } else {
823 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
824 ret = -EFAULT;
825 goto out;
826 }
827 lkey = ucmd.lkey;
828 }
829
830 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
831 if (status)
832 ret = -EINVAL;
833
834 if (ret) {
835 if (cq->resize_buf) {
836 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
837 cq->resize_buf->cqe);
838 kfree(cq->resize_buf);
839 spin_lock_irq(&cq->lock);
840 cq->resize_buf = NULL;
841 spin_unlock_irq(&cq->lock);
842 }
843 goto out;
844 }
845
846 if (cq->is_kernel) {
847 struct mthca_cq_buf tbuf;
848 int tcqe;
849
850 spin_lock_irq(&cq->lock);
851 if (cq->resize_buf->state == CQ_RESIZE_READY) {
852 mthca_cq_resize_copy_cqes(cq);
853 tbuf = cq->buf;
854 tcqe = cq->ibcq.cqe;
855 cq->buf = cq->resize_buf->buf;
856 cq->ibcq.cqe = cq->resize_buf->cqe;
857 } else {
858 tbuf = cq->resize_buf->buf;
859 tcqe = cq->resize_buf->cqe;
860 }
861
862 kfree(cq->resize_buf);
863 cq->resize_buf = NULL;
864 spin_unlock_irq(&cq->lock);
865
866 mthca_free_cq_buf(dev, &tbuf, tcqe);
867 } else
868 ibcq->cqe = entries - 1;
869
870out:
871 mutex_unlock(&cq->mutex);
872
873 return ret;
874}
875
876static int mthca_destroy_cq(struct ib_cq *cq)
877{
878 if (cq->uobject) {
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)->arm_db_index);
883 mthca_unmap_user_db(to_mdev(cq->device),
884 &to_mucontext(cq->uobject->context)->uar,
885 to_mucontext(cq->uobject->context)->db_tab,
886 to_mcq(cq)->set_ci_db_index);
887 }
888 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
889 kfree(cq);
890
891 return 0;
892}
893
894static inline u32 convert_access(int acc)
895{
896 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
897 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
898 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
899 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
900 MTHCA_MPT_FLAG_LOCAL_READ;
901}
902
903static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
904{
905 struct mthca_mr *mr;
906 int err;
907
908 mr = kmalloc(sizeof *mr, GFP_KERNEL);
909 if (!mr)
910 return ERR_PTR(-ENOMEM);
911
912 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
913 to_mpd(pd)->pd_num,
914 convert_access(acc), mr);
915
916 if (err) {
917 kfree(mr);
918 return ERR_PTR(err);
919 }
920
921 mr->umem = NULL;
922
923 return &mr->ibmr;
924}
925
926static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
927 struct ib_phys_buf *buffer_list,
928 int num_phys_buf,
929 int acc,
930 u64 *iova_start)
931{
932 struct mthca_mr *mr;
933 u64 *page_list;
934 u64 total_size;
935 unsigned long mask;
936 int shift;
937 int npages;
938 int err;
939 int i, j, n;
940
941 mask = buffer_list[0].addr ^ *iova_start;
942 total_size = 0;
943 for (i = 0; i < num_phys_buf; ++i) {
944 if (i != 0)
945 mask |= buffer_list[i].addr;
946 if (i != num_phys_buf - 1)
947 mask |= buffer_list[i].addr + buffer_list[i].size;
948
949 total_size += buffer_list[i].size;
950 }
951
952 if (mask & ~PAGE_MASK)
953 return ERR_PTR(-EINVAL);
954
955 shift = __ffs(mask | 1 << 31);
956
957 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
958 buffer_list[0].addr &= ~0ull << shift;
959
960 mr = kmalloc(sizeof *mr, GFP_KERNEL);
961 if (!mr)
962 return ERR_PTR(-ENOMEM);
963
964 npages = 0;
965 for (i = 0; i < num_phys_buf; ++i)
966 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
967
968 if (!npages)
969 return &mr->ibmr;
970
971 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
972 if (!page_list) {
973 kfree(mr);
974 return ERR_PTR(-ENOMEM);
975 }
976
977 n = 0;
978 for (i = 0; i < num_phys_buf; ++i)
979 for (j = 0;
980 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
981 ++j)
982 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
983
984 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
985 "in PD %x; shift %d, npages %d.\n",
986 (unsigned long long) buffer_list[0].addr,
987 (unsigned long long) *iova_start,
988 to_mpd(pd)->pd_num,
989 shift, npages);
990
991 err = mthca_mr_alloc_phys(to_mdev(pd->device),
992 to_mpd(pd)->pd_num,
993 page_list, shift, npages,
994 *iova_start, total_size,
995 convert_access(acc), mr);
996
997 if (err) {
998 kfree(page_list);
999 kfree(mr);
1000 return ERR_PTR(err);
1001 }
1002
1003 kfree(page_list);
1004 mr->umem = NULL;
1005
1006 return &mr->ibmr;
1007}
1008
1009static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1010 u64 virt, int acc, struct ib_udata *udata)
1011{
1012 struct mthca_dev *dev = to_mdev(pd->device);
1013 struct ib_umem_chunk *chunk;
1014 struct mthca_mr *mr;
1015 struct mthca_reg_mr ucmd;
1016 u64 *pages;
1017 int shift, n, len;
1018 int i, j, k;
1019 int err = 0;
1020 int write_mtt_size;
1021
1022 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
1023 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
1024 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1025 current->comm);
1026 mthca_warn(dev, " Update libmthca to fix this.\n");
1027 }
1028 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1029 ucmd.mr_attrs = 0;
1030 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1031 return ERR_PTR(-EFAULT);
1032
1033 mr = kmalloc(sizeof *mr, GFP_KERNEL);
1034 if (!mr)
1035 return ERR_PTR(-ENOMEM);
1036
1037 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1038 ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1039
1040 if (IS_ERR(mr->umem)) {
1041 err = PTR_ERR(mr->umem);
1042 goto err;
1043 }
1044
1045 shift = ffs(mr->umem->page_size) - 1;
1046
1047 n = 0;
1048 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1049 n += chunk->nents;
1050
1051 mr->mtt = mthca_alloc_mtt(dev, n);
1052 if (IS_ERR(mr->mtt)) {
1053 err = PTR_ERR(mr->mtt);
1054 goto err_umem;
1055 }
1056
1057 pages = (u64 *) __get_free_page(GFP_KERNEL);
1058 if (!pages) {
1059 err = -ENOMEM;
1060 goto err_mtt;
1061 }
1062
1063 i = n = 0;
1064
1065 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1066
1067 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1068 for (j = 0; j < chunk->nmap; ++j) {
1069 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1070 for (k = 0; k < len; ++k) {
1071 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1072 mr->umem->page_size * k;
1073
1074
1075
1076
1077 if (i == write_mtt_size) {
1078 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1079 if (err)
1080 goto mtt_done;
1081 n += i;
1082 i = 0;
1083 }
1084 }
1085 }
1086
1087 if (i)
1088 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1089mtt_done:
1090 free_page((unsigned long) pages);
1091 if (err)
1092 goto err_mtt;
1093
1094 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1095 convert_access(acc), mr);
1096
1097 if (err)
1098 goto err_mtt;
1099
1100 return &mr->ibmr;
1101
1102err_mtt:
1103 mthca_free_mtt(dev, mr->mtt);
1104
1105err_umem:
1106 ib_umem_release(mr->umem);
1107
1108err:
1109 kfree(mr);
1110 return ERR_PTR(err);
1111}
1112
1113static int mthca_dereg_mr(struct ib_mr *mr)
1114{
1115 struct mthca_mr *mmr = to_mmr(mr);
1116
1117 mthca_free_mr(to_mdev(mr->device), mmr);
1118 if (mmr->umem)
1119 ib_umem_release(mmr->umem);
1120 kfree(mmr);
1121
1122 return 0;
1123}
1124
1125static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1126 struct ib_fmr_attr *fmr_attr)
1127{
1128 struct mthca_fmr *fmr;
1129 int err;
1130
1131 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1132 if (!fmr)
1133 return ERR_PTR(-ENOMEM);
1134
1135 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1136 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1137 convert_access(mr_access_flags), fmr);
1138
1139 if (err) {
1140 kfree(fmr);
1141 return ERR_PTR(err);
1142 }
1143
1144 return &fmr->ibmr;
1145}
1146
1147static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1148{
1149 struct mthca_fmr *mfmr = to_mfmr(fmr);
1150 int err;
1151
1152 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1153 if (err)
1154 return err;
1155
1156 kfree(mfmr);
1157 return 0;
1158}
1159
1160static int mthca_unmap_fmr(struct list_head *fmr_list)
1161{
1162 struct ib_fmr *fmr;
1163 int err;
1164 u8 status;
1165 struct mthca_dev *mdev = NULL;
1166
1167 list_for_each_entry(fmr, fmr_list, list) {
1168 if (mdev && to_mdev(fmr->device) != mdev)
1169 return -EINVAL;
1170 mdev = to_mdev(fmr->device);
1171 }
1172
1173 if (!mdev)
1174 return 0;
1175
1176 if (mthca_is_memfree(mdev)) {
1177 list_for_each_entry(fmr, fmr_list, list)
1178 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1179
1180 wmb();
1181 } else
1182 list_for_each_entry(fmr, fmr_list, list)
1183 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1184
1185 err = mthca_SYNC_TPT(mdev, &status);
1186 if (err)
1187 return err;
1188 if (status)
1189 return -EINVAL;
1190 return 0;
1191}
1192
1193static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1194 char *buf)
1195{
1196 struct mthca_dev *dev =
1197 container_of(device, struct mthca_dev, ib_dev.dev);
1198 return sprintf(buf, "%x\n", dev->rev_id);
1199}
1200
1201static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1202 char *buf)
1203{
1204 struct mthca_dev *dev =
1205 container_of(device, struct mthca_dev, ib_dev.dev);
1206 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1207 (int) (dev->fw_ver >> 16) & 0xffff,
1208 (int) dev->fw_ver & 0xffff);
1209}
1210
1211static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1212 char *buf)
1213{
1214 struct mthca_dev *dev =
1215 container_of(device, struct mthca_dev, ib_dev.dev);
1216 switch (dev->pdev->device) {
1217 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1218 return sprintf(buf, "MT23108\n");
1219 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1220 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1221 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1222 return sprintf(buf, "MT25208\n");
1223 case PCI_DEVICE_ID_MELLANOX_SINAI:
1224 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1225 return sprintf(buf, "MT25204\n");
1226 default:
1227 return sprintf(buf, "unknown\n");
1228 }
1229}
1230
1231static ssize_t show_board(struct device *device, struct device_attribute *attr,
1232 char *buf)
1233{
1234 struct mthca_dev *dev =
1235 container_of(device, struct mthca_dev, ib_dev.dev);
1236 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1237}
1238
1239static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1240static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1241static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1242static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1243
1244static struct device_attribute *mthca_dev_attributes[] = {
1245 &dev_attr_hw_rev,
1246 &dev_attr_fw_ver,
1247 &dev_attr_hca_type,
1248 &dev_attr_board_id
1249};
1250
1251static int mthca_init_node_data(struct mthca_dev *dev)
1252{
1253 struct ib_smp *in_mad = NULL;
1254 struct ib_smp *out_mad = NULL;
1255 int err = -ENOMEM;
1256 u8 status;
1257
1258 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1259 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1260 if (!in_mad || !out_mad)
1261 goto out;
1262
1263 init_query_mad(in_mad);
1264 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1265
1266 err = mthca_MAD_IFC(dev, 1, 1,
1267 1, NULL, NULL, in_mad, out_mad,
1268 &status);
1269 if (err)
1270 goto out;
1271 if (status) {
1272 err = -EINVAL;
1273 goto out;
1274 }
1275
1276 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1277
1278 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1279
1280 err = mthca_MAD_IFC(dev, 1, 1,
1281 1, NULL, NULL, in_mad, out_mad,
1282 &status);
1283 if (err)
1284 goto out;
1285 if (status) {
1286 err = -EINVAL;
1287 goto out;
1288 }
1289
1290 if (mthca_is_memfree(dev))
1291 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1292 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1293
1294out:
1295 kfree(in_mad);
1296 kfree(out_mad);
1297 return err;
1298}
1299
1300int mthca_register_device(struct mthca_dev *dev)
1301{
1302 int ret;
1303 int i;
1304
1305 ret = mthca_init_node_data(dev);
1306 if (ret)
1307 return ret;
1308
1309 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1310 dev->ib_dev.owner = THIS_MODULE;
1311
1312 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1313 dev->ib_dev.uverbs_cmd_mask =
1314 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1315 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1316 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1317 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1318 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1319 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1320 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1321 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1322 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1323 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1324 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1325 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1326 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1327 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1328 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1329 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1330 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1331 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1332 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1333 dev->ib_dev.num_comp_vectors = 1;
1334 dev->ib_dev.dma_device = &dev->pdev->dev;
1335 dev->ib_dev.query_device = mthca_query_device;
1336 dev->ib_dev.query_port = mthca_query_port;
1337 dev->ib_dev.modify_device = mthca_modify_device;
1338 dev->ib_dev.modify_port = mthca_modify_port;
1339 dev->ib_dev.query_pkey = mthca_query_pkey;
1340 dev->ib_dev.query_gid = mthca_query_gid;
1341 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1342 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1343 dev->ib_dev.mmap = mthca_mmap_uar;
1344 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1345 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1346 dev->ib_dev.create_ah = mthca_ah_create;
1347 dev->ib_dev.query_ah = mthca_ah_query;
1348 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1349
1350 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1351 dev->ib_dev.create_srq = mthca_create_srq;
1352 dev->ib_dev.modify_srq = mthca_modify_srq;
1353 dev->ib_dev.query_srq = mthca_query_srq;
1354 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1355 dev->ib_dev.uverbs_cmd_mask |=
1356 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1357 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1358 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1359 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1360
1361 if (mthca_is_memfree(dev))
1362 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1363 else
1364 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1365 }
1366
1367 dev->ib_dev.create_qp = mthca_create_qp;
1368 dev->ib_dev.modify_qp = mthca_modify_qp;
1369 dev->ib_dev.query_qp = mthca_query_qp;
1370 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1371 dev->ib_dev.create_cq = mthca_create_cq;
1372 dev->ib_dev.resize_cq = mthca_resize_cq;
1373 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1374 dev->ib_dev.poll_cq = mthca_poll_cq;
1375 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1376 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1377 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1378 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1379
1380 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1381 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1382 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1383 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1384 if (mthca_is_memfree(dev))
1385 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1386 else
1387 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1388 }
1389
1390 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1391 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1392 dev->ib_dev.process_mad = mthca_process_mad;
1393
1394 if (mthca_is_memfree(dev)) {
1395 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1396 dev->ib_dev.post_send = mthca_arbel_post_send;
1397 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1398 } else {
1399 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1400 dev->ib_dev.post_send = mthca_tavor_post_send;
1401 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1402 }
1403
1404 mutex_init(&dev->cap_mask_mutex);
1405
1406 ret = ib_register_device(&dev->ib_dev, NULL);
1407 if (ret)
1408 return ret;
1409
1410 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1411 ret = device_create_file(&dev->ib_dev.dev,
1412 mthca_dev_attributes[i]);
1413 if (ret) {
1414 ib_unregister_device(&dev->ib_dev);
1415 return ret;
1416 }
1417 }
1418
1419 mthca_start_catas_poll(dev);
1420
1421 return 0;
1422}
1423
1424void mthca_unregister_device(struct mthca_dev *dev)
1425{
1426 mthca_stop_catas_poll(dev);
1427 ib_unregister_device(&dev->ib_dev);
1428}
1429
