IB: expand ib_umem_get() prototype
[linux-2.6.git] / drivers / infiniband / hw / mthca / mthca_provider.c
1 /*
2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7  *
8  * This software is available to you under a choice of one of two
9  * licenses.  You may choose to be licensed under the terms of the GNU
10  * General Public License (GPL) Version 2, available from the file
11  * COPYING in the main directory of this source tree, or the
12  * OpenIB.org BSD license below:
13  *
14  *     Redistribution and use in source and binary forms, with or
15  *     without modification, are permitted provided that the following
16  *     conditions are met:
17  *
18  *      - Redistributions of source code must retain the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer.
21  *
22  *      - Redistributions in binary form must reproduce the above
23  *        copyright notice, this list of conditions and the following
24  *        disclaimer in the documentation and/or other materials
25  *        provided with the distribution.
26  *
27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34  * SOFTWARE.
35  *
36  * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
37  */
38
39 #include <rdma/ib_smi.h>
40 #include <rdma/ib_umem.h>
41 #include <rdma/ib_user_verbs.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
49 static 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
57 static 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          * If Sinai memory key optimization is being used, then only
121          * the 8-bit key portion will change.  For other HCAs, the
122          * unused index bits will also be used for FMR remapping.
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
137 static 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
192 static 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
209 static 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
239 out:
240         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
241         return err;
242 }
243
244 static 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
279 static 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
330 static 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         return &context->ibucontext;
371 }
372
373 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
374 {
375         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
376                                   to_mucontext(context)->db_tab);
377         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
378         kfree(to_mucontext(context));
379
380         return 0;
381 }
382
383 static int mthca_mmap_uar(struct ib_ucontext *context,
384                           struct vm_area_struct *vma)
385 {
386         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
387                 return -EINVAL;
388
389         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
390
391         if (io_remap_pfn_range(vma, vma->vm_start,
392                                to_mucontext(context)->uar.pfn,
393                                PAGE_SIZE, vma->vm_page_prot))
394                 return -EAGAIN;
395
396         return 0;
397 }
398
399 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
400                                     struct ib_ucontext *context,
401                                     struct ib_udata *udata)
402 {
403         struct mthca_pd *pd;
404         int err;
405
406         pd = kmalloc(sizeof *pd, GFP_KERNEL);
407         if (!pd)
408                 return ERR_PTR(-ENOMEM);
409
410         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
411         if (err) {
412                 kfree(pd);
413                 return ERR_PTR(err);
414         }
415
416         if (context) {
417                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
418                         mthca_pd_free(to_mdev(ibdev), pd);
419                         kfree(pd);
420                         return ERR_PTR(-EFAULT);
421                 }
422         }
423
424         return &pd->ibpd;
425 }
426
427 static int mthca_dealloc_pd(struct ib_pd *pd)
428 {
429         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
430         kfree(pd);
431
432         return 0;
433 }
434
435 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
436                                      struct ib_ah_attr *ah_attr)
437 {
438         int err;
439         struct mthca_ah *ah;
440
441         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
442         if (!ah)
443                 return ERR_PTR(-ENOMEM);
444
445         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
446         if (err) {
447                 kfree(ah);
448                 return ERR_PTR(err);
449         }
450
451         return &ah->ibah;
452 }
453
454 static int mthca_ah_destroy(struct ib_ah *ah)
455 {
456         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
457         kfree(ah);
458
459         return 0;
460 }
461
462 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
463                                        struct ib_srq_init_attr *init_attr,
464                                        struct ib_udata *udata)
465 {
466         struct mthca_create_srq ucmd;
467         struct mthca_ucontext *context = NULL;
468         struct mthca_srq *srq;
469         int err;
470
471         srq = kmalloc(sizeof *srq, GFP_KERNEL);
472         if (!srq)
473                 return ERR_PTR(-ENOMEM);
474
475         if (pd->uobject) {
476                 context = to_mucontext(pd->uobject->context);
477
478                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
479                         err = -EFAULT;
480                         goto err_free;
481                 }
482
483                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
484                                         context->db_tab, ucmd.db_index,
485                                         ucmd.db_page);
486
487                 if (err)
488                         goto err_free;
489
490                 srq->mr.ibmr.lkey = ucmd.lkey;
491                 srq->db_index     = ucmd.db_index;
492         }
493
494         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
495                               &init_attr->attr, srq);
496
497         if (err && pd->uobject)
498                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
499                                     context->db_tab, ucmd.db_index);
500
501         if (err)
502                 goto err_free;
503
504         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
505                 mthca_free_srq(to_mdev(pd->device), srq);
506                 err = -EFAULT;
507                 goto err_free;
508         }
509
510         return &srq->ibsrq;
511
512 err_free:
513         kfree(srq);
514
515         return ERR_PTR(err);
516 }
517
518 static int mthca_destroy_srq(struct ib_srq *srq)
519 {
520         struct mthca_ucontext *context;
521
522         if (srq->uobject) {
523                 context = to_mucontext(srq->uobject->context);
524
525                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
526                                     context->db_tab, to_msrq(srq)->db_index);
527         }
528
529         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
530         kfree(srq);
531
532         return 0;
533 }
534
535 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
536                                      struct ib_qp_init_attr *init_attr,
537                                      struct ib_udata *udata)
538 {
539         struct mthca_create_qp ucmd;
540         struct mthca_qp *qp;
541         int err;
542
543         if (init_attr->create_flags)
544                 return ERR_PTR(-EINVAL);
545
546         switch (init_attr->qp_type) {
547         case IB_QPT_RC:
548         case IB_QPT_UC:
549         case IB_QPT_UD:
550         {
551                 struct mthca_ucontext *context;
552
553                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
554                 if (!qp)
555                         return ERR_PTR(-ENOMEM);
556
557                 if (pd->uobject) {
558                         context = to_mucontext(pd->uobject->context);
559
560                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
561                                 kfree(qp);
562                                 return ERR_PTR(-EFAULT);
563                         }
564
565                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
566                                                 context->db_tab,
567                                                 ucmd.sq_db_index, ucmd.sq_db_page);
568                         if (err) {
569                                 kfree(qp);
570                                 return ERR_PTR(err);
571                         }
572
573                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
574                                                 context->db_tab,
575                                                 ucmd.rq_db_index, ucmd.rq_db_page);
576                         if (err) {
577                                 mthca_unmap_user_db(to_mdev(pd->device),
578                                                     &context->uar,
579                                                     context->db_tab,
580                                                     ucmd.sq_db_index);
581                                 kfree(qp);
582                                 return ERR_PTR(err);
583                         }
584
585                         qp->mr.ibmr.lkey = ucmd.lkey;
586                         qp->sq.db_index  = ucmd.sq_db_index;
587                         qp->rq.db_index  = ucmd.rq_db_index;
588                 }
589
590                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
591                                      to_mcq(init_attr->send_cq),
592                                      to_mcq(init_attr->recv_cq),
593                                      init_attr->qp_type, init_attr->sq_sig_type,
594                                      &init_attr->cap, qp);
595
596                 if (err && pd->uobject) {
597                         context = to_mucontext(pd->uobject->context);
598
599                         mthca_unmap_user_db(to_mdev(pd->device),
600                                             &context->uar,
601                                             context->db_tab,
602                                             ucmd.sq_db_index);
603                         mthca_unmap_user_db(to_mdev(pd->device),
604                                             &context->uar,
605                                             context->db_tab,
606                                             ucmd.rq_db_index);
607                 }
608
609                 qp->ibqp.qp_num = qp->qpn;
610                 break;
611         }
612         case IB_QPT_SMI:
613         case IB_QPT_GSI:
614         {
615                 /* Don't allow userspace to create special QPs */
616                 if (pd->uobject)
617                         return ERR_PTR(-EINVAL);
618
619                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
620                 if (!qp)
621                         return ERR_PTR(-ENOMEM);
622
623                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
624
625                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
626                                       to_mcq(init_attr->send_cq),
627                                       to_mcq(init_attr->recv_cq),
628                                       init_attr->sq_sig_type, &init_attr->cap,
629                                       qp->ibqp.qp_num, init_attr->port_num,
630                                       to_msqp(qp));
631                 break;
632         }
633         default:
634                 /* Don't support raw QPs */
635                 return ERR_PTR(-ENOSYS);
636         }
637
638         if (err) {
639                 kfree(qp);
640                 return ERR_PTR(err);
641         }
642
643         init_attr->cap.max_send_wr     = qp->sq.max;
644         init_attr->cap.max_recv_wr     = qp->rq.max;
645         init_attr->cap.max_send_sge    = qp->sq.max_gs;
646         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
647         init_attr->cap.max_inline_data = qp->max_inline_data;
648
649         return &qp->ibqp;
650 }
651
652 static int mthca_destroy_qp(struct ib_qp *qp)
653 {
654         if (qp->uobject) {
655                 mthca_unmap_user_db(to_mdev(qp->device),
656                                     &to_mucontext(qp->uobject->context)->uar,
657                                     to_mucontext(qp->uobject->context)->db_tab,
658                                     to_mqp(qp)->sq.db_index);
659                 mthca_unmap_user_db(to_mdev(qp->device),
660                                     &to_mucontext(qp->uobject->context)->uar,
661                                     to_mucontext(qp->uobject->context)->db_tab,
662                                     to_mqp(qp)->rq.db_index);
663         }
664         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
665         kfree(qp);
666         return 0;
667 }
668
669 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
670                                      int comp_vector,
671                                      struct ib_ucontext *context,
672                                      struct ib_udata *udata)
673 {
674         struct mthca_create_cq ucmd;
675         struct mthca_cq *cq;
676         int nent;
677         int err;
678
679         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
680                 return ERR_PTR(-EINVAL);
681
682         if (context) {
683                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
684                         return ERR_PTR(-EFAULT);
685
686                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
687                                         to_mucontext(context)->db_tab,
688                                         ucmd.set_db_index, ucmd.set_db_page);
689                 if (err)
690                         return ERR_PTR(err);
691
692                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
693                                         to_mucontext(context)->db_tab,
694                                         ucmd.arm_db_index, ucmd.arm_db_page);
695                 if (err)
696                         goto err_unmap_set;
697         }
698
699         cq = kmalloc(sizeof *cq, GFP_KERNEL);
700         if (!cq) {
701                 err = -ENOMEM;
702                 goto err_unmap_arm;
703         }
704
705         if (context) {
706                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
707                 cq->set_ci_db_index  = ucmd.set_db_index;
708                 cq->arm_db_index     = ucmd.arm_db_index;
709         }
710
711         for (nent = 1; nent <= entries; nent <<= 1)
712                 ; /* nothing */
713
714         err = mthca_init_cq(to_mdev(ibdev), nent,
715                             context ? to_mucontext(context) : NULL,
716                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
717                             cq);
718         if (err)
719                 goto err_free;
720
721         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
722                 mthca_free_cq(to_mdev(ibdev), cq);
723                 goto err_free;
724         }
725
726         cq->resize_buf = NULL;
727
728         return &cq->ibcq;
729
730 err_free:
731         kfree(cq);
732
733 err_unmap_arm:
734         if (context)
735                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
736                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
737
738 err_unmap_set:
739         if (context)
740                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
741                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
742
743         return ERR_PTR(err);
744 }
745
746 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
747                                   int entries)
748 {
749         int ret;
750
751         spin_lock_irq(&cq->lock);
752         if (cq->resize_buf) {
753                 ret = -EBUSY;
754                 goto unlock;
755         }
756
757         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
758         if (!cq->resize_buf) {
759                 ret = -ENOMEM;
760                 goto unlock;
761         }
762
763         cq->resize_buf->state = CQ_RESIZE_ALLOC;
764
765         ret = 0;
766
767 unlock:
768         spin_unlock_irq(&cq->lock);
769
770         if (ret)
771                 return ret;
772
773         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
774         if (ret) {
775                 spin_lock_irq(&cq->lock);
776                 kfree(cq->resize_buf);
777                 cq->resize_buf = NULL;
778                 spin_unlock_irq(&cq->lock);
779                 return ret;
780         }
781
782         cq->resize_buf->cqe = entries - 1;
783
784         spin_lock_irq(&cq->lock);
785         cq->resize_buf->state = CQ_RESIZE_READY;
786         spin_unlock_irq(&cq->lock);
787
788         return 0;
789 }
790
791 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
792 {
793         struct mthca_dev *dev = to_mdev(ibcq->device);
794         struct mthca_cq *cq = to_mcq(ibcq);
795         struct mthca_resize_cq ucmd;
796         u32 lkey;
797         u8 status;
798         int ret;
799
800         if (entries < 1 || entries > dev->limits.max_cqes)
801                 return -EINVAL;
802
803         mutex_lock(&cq->mutex);
804
805         entries = roundup_pow_of_two(entries + 1);
806         if (entries == ibcq->cqe + 1) {
807                 ret = 0;
808                 goto out;
809         }
810
811         if (cq->is_kernel) {
812                 ret = mthca_alloc_resize_buf(dev, cq, entries);
813                 if (ret)
814                         goto out;
815                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
816         } else {
817                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
818                         ret = -EFAULT;
819                         goto out;
820                 }
821                 lkey = ucmd.lkey;
822         }
823
824         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
825         if (status)
826                 ret = -EINVAL;
827
828         if (ret) {
829                 if (cq->resize_buf) {
830                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
831                                           cq->resize_buf->cqe);
832                         kfree(cq->resize_buf);
833                         spin_lock_irq(&cq->lock);
834                         cq->resize_buf = NULL;
835                         spin_unlock_irq(&cq->lock);
836                 }
837                 goto out;
838         }
839
840         if (cq->is_kernel) {
841                 struct mthca_cq_buf tbuf;
842                 int tcqe;
843
844                 spin_lock_irq(&cq->lock);
845                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
846                         mthca_cq_resize_copy_cqes(cq);
847                         tbuf         = cq->buf;
848                         tcqe         = cq->ibcq.cqe;
849                         cq->buf      = cq->resize_buf->buf;
850                         cq->ibcq.cqe = cq->resize_buf->cqe;
851                 } else {
852                         tbuf = cq->resize_buf->buf;
853                         tcqe = cq->resize_buf->cqe;
854                 }
855
856                 kfree(cq->resize_buf);
857                 cq->resize_buf = NULL;
858                 spin_unlock_irq(&cq->lock);
859
860                 mthca_free_cq_buf(dev, &tbuf, tcqe);
861         } else
862                 ibcq->cqe = entries - 1;
863
864 out:
865         mutex_unlock(&cq->mutex);
866
867         return ret;
868 }
869
870 static int mthca_destroy_cq(struct ib_cq *cq)
871 {
872         if (cq->uobject) {
873                 mthca_unmap_user_db(to_mdev(cq->device),
874                                     &to_mucontext(cq->uobject->context)->uar,
875                                     to_mucontext(cq->uobject->context)->db_tab,
876                                     to_mcq(cq)->arm_db_index);
877                 mthca_unmap_user_db(to_mdev(cq->device),
878                                     &to_mucontext(cq->uobject->context)->uar,
879                                     to_mucontext(cq->uobject->context)->db_tab,
880                                     to_mcq(cq)->set_ci_db_index);
881         }
882         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
883         kfree(cq);
884
885         return 0;
886 }
887
888 static inline u32 convert_access(int acc)
889 {
890         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
891                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
892                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
893                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
894                MTHCA_MPT_FLAG_LOCAL_READ;
895 }
896
897 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
898 {
899         struct mthca_mr *mr;
900         int err;
901
902         mr = kmalloc(sizeof *mr, GFP_KERNEL);
903         if (!mr)
904                 return ERR_PTR(-ENOMEM);
905
906         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
907                                      to_mpd(pd)->pd_num,
908                                      convert_access(acc), mr);
909
910         if (err) {
911                 kfree(mr);
912                 return ERR_PTR(err);
913         }
914
915         mr->umem = NULL;
916
917         return &mr->ibmr;
918 }
919
920 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
921                                        struct ib_phys_buf *buffer_list,
922                                        int                 num_phys_buf,
923                                        int                 acc,
924                                        u64                *iova_start)
925 {
926         struct mthca_mr *mr;
927         u64 *page_list;
928         u64 total_size;
929         unsigned long mask;
930         int shift;
931         int npages;
932         int err;
933         int i, j, n;
934
935         mask = buffer_list[0].addr ^ *iova_start;
936         total_size = 0;
937         for (i = 0; i < num_phys_buf; ++i) {
938                 if (i != 0)
939                         mask |= buffer_list[i].addr;
940                 if (i != num_phys_buf - 1)
941                         mask |= buffer_list[i].addr + buffer_list[i].size;
942
943                 total_size += buffer_list[i].size;
944         }
945
946         if (mask & ~PAGE_MASK)
947                 return ERR_PTR(-EINVAL);
948
949         shift = __ffs(mask | 1 << 31);
950
951         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
952         buffer_list[0].addr &= ~0ull << shift;
953
954         mr = kmalloc(sizeof *mr, GFP_KERNEL);
955         if (!mr)
956                 return ERR_PTR(-ENOMEM);
957
958         npages = 0;
959         for (i = 0; i < num_phys_buf; ++i)
960                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
961
962         if (!npages)
963                 return &mr->ibmr;
964
965         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
966         if (!page_list) {
967                 kfree(mr);
968                 return ERR_PTR(-ENOMEM);
969         }
970
971         n = 0;
972         for (i = 0; i < num_phys_buf; ++i)
973                 for (j = 0;
974                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
975                      ++j)
976                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
977
978         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
979                   "in PD %x; shift %d, npages %d.\n",
980                   (unsigned long long) buffer_list[0].addr,
981                   (unsigned long long) *iova_start,
982                   to_mpd(pd)->pd_num,
983                   shift, npages);
984
985         err = mthca_mr_alloc_phys(to_mdev(pd->device),
986                                   to_mpd(pd)->pd_num,
987                                   page_list, shift, npages,
988                                   *iova_start, total_size,
989                                   convert_access(acc), mr);
990
991         if (err) {
992                 kfree(page_list);
993                 kfree(mr);
994                 return ERR_PTR(err);
995         }
996
997         kfree(page_list);
998         mr->umem = NULL;
999
1000         return &mr->ibmr;
1001 }
1002
1003 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1004                                        u64 virt, int acc, struct ib_udata *udata)
1005 {
1006         struct mthca_dev *dev = to_mdev(pd->device);
1007         struct ib_umem_chunk *chunk;
1008         struct mthca_mr *mr;
1009         struct mthca_reg_mr ucmd;
1010         u64 *pages;
1011         int shift, n, len;
1012         int i, j, k;
1013         int err = 0;
1014         int write_mtt_size;
1015
1016         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1017                 return ERR_PTR(-EFAULT);
1018
1019         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1020         if (!mr)
1021                 return ERR_PTR(-ENOMEM);
1022
1023         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1024                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1025
1026         if (IS_ERR(mr->umem)) {
1027                 err = PTR_ERR(mr->umem);
1028                 goto err;
1029         }
1030
1031         shift = ffs(mr->umem->page_size) - 1;
1032
1033         n = 0;
1034         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1035                 n += chunk->nents;
1036
1037         mr->mtt = mthca_alloc_mtt(dev, n);
1038         if (IS_ERR(mr->mtt)) {
1039                 err = PTR_ERR(mr->mtt);
1040                 goto err_umem;
1041         }
1042
1043         pages = (u64 *) __get_free_page(GFP_KERNEL);
1044         if (!pages) {
1045                 err = -ENOMEM;
1046                 goto err_mtt;
1047         }
1048
1049         i = n = 0;
1050
1051         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1052
1053         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1054                 for (j = 0; j < chunk->nmap; ++j) {
1055                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1056                         for (k = 0; k < len; ++k) {
1057                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1058                                         mr->umem->page_size * k;
1059                                 /*
1060                                  * Be friendly to write_mtt and pass it chunks
1061                                  * of appropriate size.
1062                                  */
1063                                 if (i == write_mtt_size) {
1064                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1065                                         if (err)
1066                                                 goto mtt_done;
1067                                         n += i;
1068                                         i = 0;
1069                                 }
1070                         }
1071                 }
1072
1073         if (i)
1074                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1075 mtt_done:
1076         free_page((unsigned long) pages);
1077         if (err)
1078                 goto err_mtt;
1079
1080         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1081                              convert_access(acc), mr);
1082
1083         if (err)
1084                 goto err_mtt;
1085
1086         return &mr->ibmr;
1087
1088 err_mtt:
1089         mthca_free_mtt(dev, mr->mtt);
1090
1091 err_umem:
1092         ib_umem_release(mr->umem);
1093
1094 err:
1095         kfree(mr);
1096         return ERR_PTR(err);
1097 }
1098
1099 static int mthca_dereg_mr(struct ib_mr *mr)
1100 {
1101         struct mthca_mr *mmr = to_mmr(mr);
1102
1103         mthca_free_mr(to_mdev(mr->device), mmr);
1104         if (mmr->umem)
1105                 ib_umem_release(mmr->umem);
1106         kfree(mmr);
1107
1108         return 0;
1109 }
1110
1111 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1112                                       struct ib_fmr_attr *fmr_attr)
1113 {
1114         struct mthca_fmr *fmr;
1115         int err;
1116
1117         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1118         if (!fmr)
1119                 return ERR_PTR(-ENOMEM);
1120
1121         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1122         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1123                              convert_access(mr_access_flags), fmr);
1124
1125         if (err) {
1126                 kfree(fmr);
1127                 return ERR_PTR(err);
1128         }
1129
1130         return &fmr->ibmr;
1131 }
1132
1133 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1134 {
1135         struct mthca_fmr *mfmr = to_mfmr(fmr);
1136         int err;
1137
1138         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1139         if (err)
1140                 return err;
1141
1142         kfree(mfmr);
1143         return 0;
1144 }
1145
1146 static int mthca_unmap_fmr(struct list_head *fmr_list)
1147 {
1148         struct ib_fmr *fmr;
1149         int err;
1150         u8 status;
1151         struct mthca_dev *mdev = NULL;
1152
1153         list_for_each_entry(fmr, fmr_list, list) {
1154                 if (mdev && to_mdev(fmr->device) != mdev)
1155                         return -EINVAL;
1156                 mdev = to_mdev(fmr->device);
1157         }
1158
1159         if (!mdev)
1160                 return 0;
1161
1162         if (mthca_is_memfree(mdev)) {
1163                 list_for_each_entry(fmr, fmr_list, list)
1164                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1165
1166                 wmb();
1167         } else
1168                 list_for_each_entry(fmr, fmr_list, list)
1169                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1170
1171         err = mthca_SYNC_TPT(mdev, &status);
1172         if (err)
1173                 return err;
1174         if (status)
1175                 return -EINVAL;
1176         return 0;
1177 }
1178
1179 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1180                         char *buf)
1181 {
1182         struct mthca_dev *dev =
1183                 container_of(device, struct mthca_dev, ib_dev.dev);
1184         return sprintf(buf, "%x\n", dev->rev_id);
1185 }
1186
1187 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1188                            char *buf)
1189 {
1190         struct mthca_dev *dev =
1191                 container_of(device, struct mthca_dev, ib_dev.dev);
1192         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1193                        (int) (dev->fw_ver >> 16) & 0xffff,
1194                        (int) dev->fw_ver & 0xffff);
1195 }
1196
1197 static ssize_t show_hca(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         switch (dev->pdev->device) {
1203         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1204                 return sprintf(buf, "MT23108\n");
1205         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1206                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1207         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1208                 return sprintf(buf, "MT25208\n");
1209         case PCI_DEVICE_ID_MELLANOX_SINAI:
1210         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1211                 return sprintf(buf, "MT25204\n");
1212         default:
1213                 return sprintf(buf, "unknown\n");
1214         }
1215 }
1216
1217 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1218                           char *buf)
1219 {
1220         struct mthca_dev *dev =
1221                 container_of(device, struct mthca_dev, ib_dev.dev);
1222         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1223 }
1224
1225 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1226 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1227 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1228 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1229
1230 static struct device_attribute *mthca_dev_attributes[] = {
1231         &dev_attr_hw_rev,
1232         &dev_attr_fw_ver,
1233         &dev_attr_hca_type,
1234         &dev_attr_board_id
1235 };
1236
1237 static int mthca_init_node_data(struct mthca_dev *dev)
1238 {
1239         struct ib_smp *in_mad  = NULL;
1240         struct ib_smp *out_mad = NULL;
1241         int err = -ENOMEM;
1242         u8 status;
1243
1244         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1245         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1246         if (!in_mad || !out_mad)
1247                 goto out;
1248
1249         init_query_mad(in_mad);
1250         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1251
1252         err = mthca_MAD_IFC(dev, 1, 1,
1253                             1, NULL, NULL, in_mad, out_mad,
1254                             &status);
1255         if (err)
1256                 goto out;
1257         if (status) {
1258                 err = -EINVAL;
1259                 goto out;
1260         }
1261
1262         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1263
1264         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
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         if (mthca_is_memfree(dev))
1277                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1278         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1279
1280 out:
1281         kfree(in_mad);
1282         kfree(out_mad);
1283         return err;
1284 }
1285
1286 int mthca_register_device(struct mthca_dev *dev)
1287 {
1288         int ret;
1289         int i;
1290
1291         ret = mthca_init_node_data(dev);
1292         if (ret)
1293                 return ret;
1294
1295         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1296         dev->ib_dev.owner                = THIS_MODULE;
1297
1298         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1299         dev->ib_dev.uverbs_cmd_mask      =
1300                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1301                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1302                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1303                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1304                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1305                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1306                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1307                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1308                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1309                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1310                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1311                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1312                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1313                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1314                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1315                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1316                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1317         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1318         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1319         dev->ib_dev.num_comp_vectors     = 1;
1320         dev->ib_dev.dma_device           = &dev->pdev->dev;
1321         dev->ib_dev.query_device         = mthca_query_device;
1322         dev->ib_dev.query_port           = mthca_query_port;
1323         dev->ib_dev.modify_device        = mthca_modify_device;
1324         dev->ib_dev.modify_port          = mthca_modify_port;
1325         dev->ib_dev.query_pkey           = mthca_query_pkey;
1326         dev->ib_dev.query_gid            = mthca_query_gid;
1327         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1328         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1329         dev->ib_dev.mmap                 = mthca_mmap_uar;
1330         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1331         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1332         dev->ib_dev.create_ah            = mthca_ah_create;
1333         dev->ib_dev.query_ah             = mthca_ah_query;
1334         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1335
1336         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1337                 dev->ib_dev.create_srq           = mthca_create_srq;
1338                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1339                 dev->ib_dev.query_srq            = mthca_query_srq;
1340                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1341                 dev->ib_dev.uverbs_cmd_mask     |=
1342                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1343                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1344                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1345                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1346
1347                 if (mthca_is_memfree(dev))
1348                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1349                 else
1350                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1351         }
1352
1353         dev->ib_dev.create_qp            = mthca_create_qp;
1354         dev->ib_dev.modify_qp            = mthca_modify_qp;
1355         dev->ib_dev.query_qp             = mthca_query_qp;
1356         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1357         dev->ib_dev.create_cq            = mthca_create_cq;
1358         dev->ib_dev.resize_cq            = mthca_resize_cq;
1359         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1360         dev->ib_dev.poll_cq              = mthca_poll_cq;
1361         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1362         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1363         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1364         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1365
1366         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1367                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1368                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1369                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1370                 if (mthca_is_memfree(dev))
1371                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1372                 else
1373                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1374         }
1375
1376         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1377         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1378         dev->ib_dev.process_mad          = mthca_process_mad;
1379
1380         if (mthca_is_memfree(dev)) {
1381                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1382                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1383                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1384         } else {
1385                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1386                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1387                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1388         }
1389
1390         mutex_init(&dev->cap_mask_mutex);
1391
1392         ret = ib_register_device(&dev->ib_dev);
1393         if (ret)
1394                 return ret;
1395
1396         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1397                 ret = device_create_file(&dev->ib_dev.dev,
1398                                          mthca_dev_attributes[i]);
1399                 if (ret) {
1400                         ib_unregister_device(&dev->ib_dev);
1401                         return ret;
1402                 }
1403         }
1404
1405         mthca_start_catas_poll(dev);
1406
1407         return 0;
1408 }
1409
1410 void mthca_unregister_device(struct mthca_dev *dev)
1411 {
1412         mthca_stop_catas_poll(dev);
1413         ib_unregister_device(&dev->ib_dev);
1414 }