Merge commit 'origin/master'
[linux-2.6] / 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
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
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         context->reg_mr_warned = 0;
371
372         return &context->ibucontext;
373 }
374
375 static 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
385 static 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
401 static 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
429 static 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
437 static 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
456 static 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
464 static 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
514 err_free:
515         kfree(srq);
516
517         return ERR_PTR(err);
518 }
519
520 static 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
537 static 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                 /* Don't allow userspace to create special QPs */
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                 /* Don't support raw QPs */
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
654 static 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
671 static 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                 ; /* nothing */
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
732 err_free:
733         kfree(cq);
734
735 err_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
740 err_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
748 static 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
769 unlock:
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
793 static 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
866 out:
867         mutex_unlock(&cq->mutex);
868
869         return ret;
870 }
871
872 static 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
890 static 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
899 static 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
922 static 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
1005 static 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                                  * Be friendly to write_mtt and pass it chunks
1071                                  * of appropriate size.
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);
1085 mtt_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
1098 err_mtt:
1099         mthca_free_mtt(dev, mr->mtt);
1100
1101 err_umem:
1102         ib_umem_release(mr->umem);
1103
1104 err:
1105         kfree(mr);
1106         return ERR_PTR(err);
1107 }
1108
1109 static 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
1121 static 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
1143 static 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
1156 static 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
1189 static 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
1197 static 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
1207 static 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
1227 static 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
1235 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1236 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1237 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1238 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1239
1240 static 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
1247 static 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
1290 out:
1291         kfree(in_mad);
1292         kfree(out_mad);
1293         return err;
1294 }
1295
1296 int 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
1420 void mthca_unregister_device(struct mthca_dev *dev)
1421 {
1422         mthca_stop_catas_poll(dev);
1423         ib_unregister_device(&dev->ib_dev);
1424 }