Merge commit 'v2.6.26-rc8' into x86/xen
[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  * $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
43 #include <linux/sched.h>
44 #include <linux/mm.h>
45
46 #include "mthca_dev.h"
47 #include "mthca_cmd.h"
48 #include "mthca_user.h"
49 #include "mthca_memfree.h"
50
51 static void init_query_mad(struct ib_smp *mad)
52 {
53         mad->base_version  = 1;
54         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
55         mad->class_version = 1;
56         mad->method        = IB_MGMT_METHOD_GET;
57 }
58
59 static int mthca_query_device(struct ib_device *ibdev,
60                               struct ib_device_attr *props)
61 {
62         struct ib_smp *in_mad  = NULL;
63         struct ib_smp *out_mad = NULL;
64         int err = -ENOMEM;
65         struct mthca_dev *mdev = to_mdev(ibdev);
66
67         u8 status;
68
69         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
70         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
71         if (!in_mad || !out_mad)
72                 goto out;
73
74         memset(props, 0, sizeof *props);
75
76         props->fw_ver              = mdev->fw_ver;
77
78         init_query_mad(in_mad);
79         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
80
81         err = mthca_MAD_IFC(mdev, 1, 1,
82                             1, NULL, NULL, in_mad, out_mad,
83                             &status);
84         if (err)
85                 goto out;
86         if (status) {
87                 err = -EINVAL;
88                 goto out;
89         }
90
91         props->device_cap_flags    = mdev->device_cap_flags;
92         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
93                 0xffffff;
94         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
95         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
96         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
97
98         props->max_mr_size         = ~0ull;
99         props->page_size_cap       = mdev->limits.page_size_cap;
100         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
101         props->max_qp_wr           = mdev->limits.max_wqes;
102         props->max_sge             = mdev->limits.max_sg;
103         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
104         props->max_cqe             = mdev->limits.max_cqes;
105         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
106         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
107         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
108         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
109         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
110         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
111         props->max_srq_wr          = mdev->limits.max_srq_wqes;
112         props->max_srq_sge         = mdev->limits.max_srq_sge;
113         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
114         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
115                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
116         props->max_pkeys           = mdev->limits.pkey_table_len;
117         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
118         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
119         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
120                                            props->max_mcast_grp;
121         /*
122          * If Sinai memory key optimization is being used, then only
123          * the 8-bit key portion will change.  For other HCAs, the
124          * unused index bits will also be used for FMR remapping.
125          */
126         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
127                 props->max_map_per_fmr = 255;
128         else
129                 props->max_map_per_fmr =
130                         (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
131
132         err = 0;
133  out:
134         kfree(in_mad);
135         kfree(out_mad);
136         return err;
137 }
138
139 static int mthca_query_port(struct ib_device *ibdev,
140                             u8 port, struct ib_port_attr *props)
141 {
142         struct ib_smp *in_mad  = NULL;
143         struct ib_smp *out_mad = NULL;
144         int err = -ENOMEM;
145         u8 status;
146
147         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
148         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
149         if (!in_mad || !out_mad)
150                 goto out;
151
152         memset(props, 0, sizeof *props);
153
154         init_query_mad(in_mad);
155         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
156         in_mad->attr_mod = cpu_to_be32(port);
157
158         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
159                             port, NULL, NULL, in_mad, out_mad,
160                             &status);
161         if (err)
162                 goto out;
163         if (status) {
164                 err = -EINVAL;
165                 goto out;
166         }
167
168         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
169         props->lmc               = out_mad->data[34] & 0x7;
170         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
171         props->sm_sl             = out_mad->data[36] & 0xf;
172         props->state             = out_mad->data[32] & 0xf;
173         props->phys_state        = out_mad->data[33] >> 4;
174         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
175         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
176         props->max_msg_sz        = 0x80000000;
177         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
178         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
179         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
180         props->active_width      = out_mad->data[31] & 0xf;
181         props->active_speed      = out_mad->data[35] >> 4;
182         props->max_mtu           = out_mad->data[41] & 0xf;
183         props->active_mtu        = out_mad->data[36] >> 4;
184         props->subnet_timeout    = out_mad->data[51] & 0x1f;
185         props->max_vl_num        = out_mad->data[37] >> 4;
186         props->init_type_reply   = out_mad->data[41] >> 4;
187
188  out:
189         kfree(in_mad);
190         kfree(out_mad);
191         return err;
192 }
193
194 static int mthca_modify_device(struct ib_device *ibdev,
195                                int mask,
196                                struct ib_device_modify *props)
197 {
198         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
199                 return -EOPNOTSUPP;
200
201         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
202                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
203                         return -ERESTARTSYS;
204                 memcpy(ibdev->node_desc, props->node_desc, 64);
205                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
206         }
207
208         return 0;
209 }
210
211 static int mthca_modify_port(struct ib_device *ibdev,
212                              u8 port, int port_modify_mask,
213                              struct ib_port_modify *props)
214 {
215         struct mthca_set_ib_param set_ib;
216         struct ib_port_attr attr;
217         int err;
218         u8 status;
219
220         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
221                 return -ERESTARTSYS;
222
223         err = mthca_query_port(ibdev, port, &attr);
224         if (err)
225                 goto out;
226
227         set_ib.set_si_guid     = 0;
228         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
229
230         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
231                 ~props->clr_port_cap_mask;
232
233         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
234         if (err)
235                 goto out;
236         if (status) {
237                 err = -EINVAL;
238                 goto out;
239         }
240
241 out:
242         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
243         return err;
244 }
245
246 static int mthca_query_pkey(struct ib_device *ibdev,
247                             u8 port, u16 index, u16 *pkey)
248 {
249         struct ib_smp *in_mad  = NULL;
250         struct ib_smp *out_mad = NULL;
251         int err = -ENOMEM;
252         u8 status;
253
254         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
255         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
256         if (!in_mad || !out_mad)
257                 goto out;
258
259         init_query_mad(in_mad);
260         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
261         in_mad->attr_mod = cpu_to_be32(index / 32);
262
263         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
264                             port, NULL, NULL, in_mad, out_mad,
265                             &status);
266         if (err)
267                 goto out;
268         if (status) {
269                 err = -EINVAL;
270                 goto out;
271         }
272
273         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
274
275  out:
276         kfree(in_mad);
277         kfree(out_mad);
278         return err;
279 }
280
281 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
282                            int index, union ib_gid *gid)
283 {
284         struct ib_smp *in_mad  = NULL;
285         struct ib_smp *out_mad = NULL;
286         int err = -ENOMEM;
287         u8 status;
288
289         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
290         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
291         if (!in_mad || !out_mad)
292                 goto out;
293
294         init_query_mad(in_mad);
295         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
296         in_mad->attr_mod = cpu_to_be32(port);
297
298         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
299                             port, NULL, NULL, in_mad, out_mad,
300                             &status);
301         if (err)
302                 goto out;
303         if (status) {
304                 err = -EINVAL;
305                 goto out;
306         }
307
308         memcpy(gid->raw, out_mad->data + 8, 8);
309
310         init_query_mad(in_mad);
311         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
312         in_mad->attr_mod = cpu_to_be32(index / 8);
313
314         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
315                             port, NULL, NULL, in_mad, out_mad,
316                             &status);
317         if (err)
318                 goto out;
319         if (status) {
320                 err = -EINVAL;
321                 goto out;
322         }
323
324         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
325
326  out:
327         kfree(in_mad);
328         kfree(out_mad);
329         return err;
330 }
331
332 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
333                                                 struct ib_udata *udata)
334 {
335         struct mthca_alloc_ucontext_resp uresp;
336         struct mthca_ucontext           *context;
337         int                              err;
338
339         memset(&uresp, 0, sizeof uresp);
340
341         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
342         if (mthca_is_memfree(to_mdev(ibdev)))
343                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
344         else
345                 uresp.uarc_size = 0;
346
347         context = kmalloc(sizeof *context, GFP_KERNEL);
348         if (!context)
349                 return ERR_PTR(-ENOMEM);
350
351         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
352         if (err) {
353                 kfree(context);
354                 return ERR_PTR(err);
355         }
356
357         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
358         if (IS_ERR(context->db_tab)) {
359                 err = PTR_ERR(context->db_tab);
360                 mthca_uar_free(to_mdev(ibdev), &context->uar);
361                 kfree(context);
362                 return ERR_PTR(err);
363         }
364
365         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
366                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
367                 mthca_uar_free(to_mdev(ibdev), &context->uar);
368                 kfree(context);
369                 return ERR_PTR(-EFAULT);
370         }
371
372         context->reg_mr_warned = 0;
373
374         return &context->ibucontext;
375 }
376
377 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
378 {
379         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
380                                   to_mucontext(context)->db_tab);
381         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
382         kfree(to_mucontext(context));
383
384         return 0;
385 }
386
387 static int mthca_mmap_uar(struct ib_ucontext *context,
388                           struct vm_area_struct *vma)
389 {
390         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
391                 return -EINVAL;
392
393         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
394
395         if (io_remap_pfn_range(vma, vma->vm_start,
396                                to_mucontext(context)->uar.pfn,
397                                PAGE_SIZE, vma->vm_page_prot))
398                 return -EAGAIN;
399
400         return 0;
401 }
402
403 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
404                                     struct ib_ucontext *context,
405                                     struct ib_udata *udata)
406 {
407         struct mthca_pd *pd;
408         int err;
409
410         pd = kmalloc(sizeof *pd, GFP_KERNEL);
411         if (!pd)
412                 return ERR_PTR(-ENOMEM);
413
414         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
415         if (err) {
416                 kfree(pd);
417                 return ERR_PTR(err);
418         }
419
420         if (context) {
421                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
422                         mthca_pd_free(to_mdev(ibdev), pd);
423                         kfree(pd);
424                         return ERR_PTR(-EFAULT);
425                 }
426         }
427
428         return &pd->ibpd;
429 }
430
431 static int mthca_dealloc_pd(struct ib_pd *pd)
432 {
433         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
434         kfree(pd);
435
436         return 0;
437 }
438
439 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
440                                      struct ib_ah_attr *ah_attr)
441 {
442         int err;
443         struct mthca_ah *ah;
444
445         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
446         if (!ah)
447                 return ERR_PTR(-ENOMEM);
448
449         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
450         if (err) {
451                 kfree(ah);
452                 return ERR_PTR(err);
453         }
454
455         return &ah->ibah;
456 }
457
458 static int mthca_ah_destroy(struct ib_ah *ah)
459 {
460         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
461         kfree(ah);
462
463         return 0;
464 }
465
466 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
467                                        struct ib_srq_init_attr *init_attr,
468                                        struct ib_udata *udata)
469 {
470         struct mthca_create_srq ucmd;
471         struct mthca_ucontext *context = NULL;
472         struct mthca_srq *srq;
473         int err;
474
475         srq = kmalloc(sizeof *srq, GFP_KERNEL);
476         if (!srq)
477                 return ERR_PTR(-ENOMEM);
478
479         if (pd->uobject) {
480                 context = to_mucontext(pd->uobject->context);
481
482                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
483                         err = -EFAULT;
484                         goto err_free;
485                 }
486
487                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
488                                         context->db_tab, ucmd.db_index,
489                                         ucmd.db_page);
490
491                 if (err)
492                         goto err_free;
493
494                 srq->mr.ibmr.lkey = ucmd.lkey;
495                 srq->db_index     = ucmd.db_index;
496         }
497
498         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
499                               &init_attr->attr, srq);
500
501         if (err && pd->uobject)
502                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
503                                     context->db_tab, ucmd.db_index);
504
505         if (err)
506                 goto err_free;
507
508         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
509                 mthca_free_srq(to_mdev(pd->device), srq);
510                 err = -EFAULT;
511                 goto err_free;
512         }
513
514         return &srq->ibsrq;
515
516 err_free:
517         kfree(srq);
518
519         return ERR_PTR(err);
520 }
521
522 static int mthca_destroy_srq(struct ib_srq *srq)
523 {
524         struct mthca_ucontext *context;
525
526         if (srq->uobject) {
527                 context = to_mucontext(srq->uobject->context);
528
529                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
530                                     context->db_tab, to_msrq(srq)->db_index);
531         }
532
533         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
534         kfree(srq);
535
536         return 0;
537 }
538
539 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
540                                      struct ib_qp_init_attr *init_attr,
541                                      struct ib_udata *udata)
542 {
543         struct mthca_create_qp ucmd;
544         struct mthca_qp *qp;
545         int err;
546
547         if (init_attr->create_flags)
548                 return ERR_PTR(-EINVAL);
549
550         switch (init_attr->qp_type) {
551         case IB_QPT_RC:
552         case IB_QPT_UC:
553         case IB_QPT_UD:
554         {
555                 struct mthca_ucontext *context;
556
557                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
558                 if (!qp)
559                         return ERR_PTR(-ENOMEM);
560
561                 if (pd->uobject) {
562                         context = to_mucontext(pd->uobject->context);
563
564                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
565                                 kfree(qp);
566                                 return ERR_PTR(-EFAULT);
567                         }
568
569                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
570                                                 context->db_tab,
571                                                 ucmd.sq_db_index, ucmd.sq_db_page);
572                         if (err) {
573                                 kfree(qp);
574                                 return ERR_PTR(err);
575                         }
576
577                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
578                                                 context->db_tab,
579                                                 ucmd.rq_db_index, ucmd.rq_db_page);
580                         if (err) {
581                                 mthca_unmap_user_db(to_mdev(pd->device),
582                                                     &context->uar,
583                                                     context->db_tab,
584                                                     ucmd.sq_db_index);
585                                 kfree(qp);
586                                 return ERR_PTR(err);
587                         }
588
589                         qp->mr.ibmr.lkey = ucmd.lkey;
590                         qp->sq.db_index  = ucmd.sq_db_index;
591                         qp->rq.db_index  = ucmd.rq_db_index;
592                 }
593
594                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
595                                      to_mcq(init_attr->send_cq),
596                                      to_mcq(init_attr->recv_cq),
597                                      init_attr->qp_type, init_attr->sq_sig_type,
598                                      &init_attr->cap, qp);
599
600                 if (err && pd->uobject) {
601                         context = to_mucontext(pd->uobject->context);
602
603                         mthca_unmap_user_db(to_mdev(pd->device),
604                                             &context->uar,
605                                             context->db_tab,
606                                             ucmd.sq_db_index);
607                         mthca_unmap_user_db(to_mdev(pd->device),
608                                             &context->uar,
609                                             context->db_tab,
610                                             ucmd.rq_db_index);
611                 }
612
613                 qp->ibqp.qp_num = qp->qpn;
614                 break;
615         }
616         case IB_QPT_SMI:
617         case IB_QPT_GSI:
618         {
619                 /* Don't allow userspace to create special QPs */
620                 if (pd->uobject)
621                         return ERR_PTR(-EINVAL);
622
623                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
624                 if (!qp)
625                         return ERR_PTR(-ENOMEM);
626
627                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
628
629                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
630                                       to_mcq(init_attr->send_cq),
631                                       to_mcq(init_attr->recv_cq),
632                                       init_attr->sq_sig_type, &init_attr->cap,
633                                       qp->ibqp.qp_num, init_attr->port_num,
634                                       to_msqp(qp));
635                 break;
636         }
637         default:
638                 /* Don't support raw QPs */
639                 return ERR_PTR(-ENOSYS);
640         }
641
642         if (err) {
643                 kfree(qp);
644                 return ERR_PTR(err);
645         }
646
647         init_attr->cap.max_send_wr     = qp->sq.max;
648         init_attr->cap.max_recv_wr     = qp->rq.max;
649         init_attr->cap.max_send_sge    = qp->sq.max_gs;
650         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
651         init_attr->cap.max_inline_data = qp->max_inline_data;
652
653         return &qp->ibqp;
654 }
655
656 static int mthca_destroy_qp(struct ib_qp *qp)
657 {
658         if (qp->uobject) {
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)->sq.db_index);
663                 mthca_unmap_user_db(to_mdev(qp->device),
664                                     &to_mucontext(qp->uobject->context)->uar,
665                                     to_mucontext(qp->uobject->context)->db_tab,
666                                     to_mqp(qp)->rq.db_index);
667         }
668         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
669         kfree(qp);
670         return 0;
671 }
672
673 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
674                                      int comp_vector,
675                                      struct ib_ucontext *context,
676                                      struct ib_udata *udata)
677 {
678         struct mthca_create_cq ucmd;
679         struct mthca_cq *cq;
680         int nent;
681         int err;
682
683         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
684                 return ERR_PTR(-EINVAL);
685
686         if (context) {
687                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
688                         return ERR_PTR(-EFAULT);
689
690                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
691                                         to_mucontext(context)->db_tab,
692                                         ucmd.set_db_index, ucmd.set_db_page);
693                 if (err)
694                         return ERR_PTR(err);
695
696                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
697                                         to_mucontext(context)->db_tab,
698                                         ucmd.arm_db_index, ucmd.arm_db_page);
699                 if (err)
700                         goto err_unmap_set;
701         }
702
703         cq = kmalloc(sizeof *cq, GFP_KERNEL);
704         if (!cq) {
705                 err = -ENOMEM;
706                 goto err_unmap_arm;
707         }
708
709         if (context) {
710                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
711                 cq->set_ci_db_index  = ucmd.set_db_index;
712                 cq->arm_db_index     = ucmd.arm_db_index;
713         }
714
715         for (nent = 1; nent <= entries; nent <<= 1)
716                 ; /* nothing */
717
718         err = mthca_init_cq(to_mdev(ibdev), nent,
719                             context ? to_mucontext(context) : NULL,
720                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
721                             cq);
722         if (err)
723                 goto err_free;
724
725         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
726                 mthca_free_cq(to_mdev(ibdev), cq);
727                 goto err_free;
728         }
729
730         cq->resize_buf = NULL;
731
732         return &cq->ibcq;
733
734 err_free:
735         kfree(cq);
736
737 err_unmap_arm:
738         if (context)
739                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
740                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
741
742 err_unmap_set:
743         if (context)
744                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
745                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
746
747         return ERR_PTR(err);
748 }
749
750 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
751                                   int entries)
752 {
753         int ret;
754
755         spin_lock_irq(&cq->lock);
756         if (cq->resize_buf) {
757                 ret = -EBUSY;
758                 goto unlock;
759         }
760
761         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
762         if (!cq->resize_buf) {
763                 ret = -ENOMEM;
764                 goto unlock;
765         }
766
767         cq->resize_buf->state = CQ_RESIZE_ALLOC;
768
769         ret = 0;
770
771 unlock:
772         spin_unlock_irq(&cq->lock);
773
774         if (ret)
775                 return ret;
776
777         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
778         if (ret) {
779                 spin_lock_irq(&cq->lock);
780                 kfree(cq->resize_buf);
781                 cq->resize_buf = NULL;
782                 spin_unlock_irq(&cq->lock);
783                 return ret;
784         }
785
786         cq->resize_buf->cqe = entries - 1;
787
788         spin_lock_irq(&cq->lock);
789         cq->resize_buf->state = CQ_RESIZE_READY;
790         spin_unlock_irq(&cq->lock);
791
792         return 0;
793 }
794
795 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
796 {
797         struct mthca_dev *dev = to_mdev(ibcq->device);
798         struct mthca_cq *cq = to_mcq(ibcq);
799         struct mthca_resize_cq ucmd;
800         u32 lkey;
801         u8 status;
802         int ret;
803
804         if (entries < 1 || entries > dev->limits.max_cqes)
805                 return -EINVAL;
806
807         mutex_lock(&cq->mutex);
808
809         entries = roundup_pow_of_two(entries + 1);
810         if (entries == ibcq->cqe + 1) {
811                 ret = 0;
812                 goto out;
813         }
814
815         if (cq->is_kernel) {
816                 ret = mthca_alloc_resize_buf(dev, cq, entries);
817                 if (ret)
818                         goto out;
819                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
820         } else {
821                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
822                         ret = -EFAULT;
823                         goto out;
824                 }
825                 lkey = ucmd.lkey;
826         }
827
828         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries), &status);
829         if (status)
830                 ret = -EINVAL;
831
832         if (ret) {
833                 if (cq->resize_buf) {
834                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
835                                           cq->resize_buf->cqe);
836                         kfree(cq->resize_buf);
837                         spin_lock_irq(&cq->lock);
838                         cq->resize_buf = NULL;
839                         spin_unlock_irq(&cq->lock);
840                 }
841                 goto out;
842         }
843
844         if (cq->is_kernel) {
845                 struct mthca_cq_buf tbuf;
846                 int tcqe;
847
848                 spin_lock_irq(&cq->lock);
849                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
850                         mthca_cq_resize_copy_cqes(cq);
851                         tbuf         = cq->buf;
852                         tcqe         = cq->ibcq.cqe;
853                         cq->buf      = cq->resize_buf->buf;
854                         cq->ibcq.cqe = cq->resize_buf->cqe;
855                 } else {
856                         tbuf = cq->resize_buf->buf;
857                         tcqe = cq->resize_buf->cqe;
858                 }
859
860                 kfree(cq->resize_buf);
861                 cq->resize_buf = NULL;
862                 spin_unlock_irq(&cq->lock);
863
864                 mthca_free_cq_buf(dev, &tbuf, tcqe);
865         } else
866                 ibcq->cqe = entries - 1;
867
868 out:
869         mutex_unlock(&cq->mutex);
870
871         return ret;
872 }
873
874 static int mthca_destroy_cq(struct ib_cq *cq)
875 {
876         if (cq->uobject) {
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)->arm_db_index);
881                 mthca_unmap_user_db(to_mdev(cq->device),
882                                     &to_mucontext(cq->uobject->context)->uar,
883                                     to_mucontext(cq->uobject->context)->db_tab,
884                                     to_mcq(cq)->set_ci_db_index);
885         }
886         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
887         kfree(cq);
888
889         return 0;
890 }
891
892 static inline u32 convert_access(int acc)
893 {
894         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
895                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
896                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
897                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
898                MTHCA_MPT_FLAG_LOCAL_READ;
899 }
900
901 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
902 {
903         struct mthca_mr *mr;
904         int err;
905
906         mr = kmalloc(sizeof *mr, GFP_KERNEL);
907         if (!mr)
908                 return ERR_PTR(-ENOMEM);
909
910         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
911                                      to_mpd(pd)->pd_num,
912                                      convert_access(acc), mr);
913
914         if (err) {
915                 kfree(mr);
916                 return ERR_PTR(err);
917         }
918
919         mr->umem = NULL;
920
921         return &mr->ibmr;
922 }
923
924 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
925                                        struct ib_phys_buf *buffer_list,
926                                        int                 num_phys_buf,
927                                        int                 acc,
928                                        u64                *iova_start)
929 {
930         struct mthca_mr *mr;
931         u64 *page_list;
932         u64 total_size;
933         unsigned long mask;
934         int shift;
935         int npages;
936         int err;
937         int i, j, n;
938
939         mask = buffer_list[0].addr ^ *iova_start;
940         total_size = 0;
941         for (i = 0; i < num_phys_buf; ++i) {
942                 if (i != 0)
943                         mask |= buffer_list[i].addr;
944                 if (i != num_phys_buf - 1)
945                         mask |= buffer_list[i].addr + buffer_list[i].size;
946
947                 total_size += buffer_list[i].size;
948         }
949
950         if (mask & ~PAGE_MASK)
951                 return ERR_PTR(-EINVAL);
952
953         shift = __ffs(mask | 1 << 31);
954
955         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
956         buffer_list[0].addr &= ~0ull << shift;
957
958         mr = kmalloc(sizeof *mr, GFP_KERNEL);
959         if (!mr)
960                 return ERR_PTR(-ENOMEM);
961
962         npages = 0;
963         for (i = 0; i < num_phys_buf; ++i)
964                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
965
966         if (!npages)
967                 return &mr->ibmr;
968
969         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
970         if (!page_list) {
971                 kfree(mr);
972                 return ERR_PTR(-ENOMEM);
973         }
974
975         n = 0;
976         for (i = 0; i < num_phys_buf; ++i)
977                 for (j = 0;
978                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
979                      ++j)
980                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
981
982         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
983                   "in PD %x; shift %d, npages %d.\n",
984                   (unsigned long long) buffer_list[0].addr,
985                   (unsigned long long) *iova_start,
986                   to_mpd(pd)->pd_num,
987                   shift, npages);
988
989         err = mthca_mr_alloc_phys(to_mdev(pd->device),
990                                   to_mpd(pd)->pd_num,
991                                   page_list, shift, npages,
992                                   *iova_start, total_size,
993                                   convert_access(acc), mr);
994
995         if (err) {
996                 kfree(page_list);
997                 kfree(mr);
998                 return ERR_PTR(err);
999         }
1000
1001         kfree(page_list);
1002         mr->umem = NULL;
1003
1004         return &mr->ibmr;
1005 }
1006
1007 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1008                                        u64 virt, int acc, struct ib_udata *udata)
1009 {
1010         struct mthca_dev *dev = to_mdev(pd->device);
1011         struct ib_umem_chunk *chunk;
1012         struct mthca_mr *mr;
1013         struct mthca_reg_mr ucmd;
1014         u64 *pages;
1015         int shift, n, len;
1016         int i, j, k;
1017         int err = 0;
1018         int write_mtt_size;
1019
1020         if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
1021                 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
1022                         mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
1023                                    current->comm);
1024                         mthca_warn(dev, "  Update libmthca to fix this.\n");
1025                 }
1026                 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
1027                 ucmd.mr_attrs = 0;
1028         } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
1029                 return ERR_PTR(-EFAULT);
1030
1031         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1032         if (!mr)
1033                 return ERR_PTR(-ENOMEM);
1034
1035         mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
1036                                ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1037
1038         if (IS_ERR(mr->umem)) {
1039                 err = PTR_ERR(mr->umem);
1040                 goto err;
1041         }
1042
1043         shift = ffs(mr->umem->page_size) - 1;
1044
1045         n = 0;
1046         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1047                 n += chunk->nents;
1048
1049         mr->mtt = mthca_alloc_mtt(dev, n);
1050         if (IS_ERR(mr->mtt)) {
1051                 err = PTR_ERR(mr->mtt);
1052                 goto err_umem;
1053         }
1054
1055         pages = (u64 *) __get_free_page(GFP_KERNEL);
1056         if (!pages) {
1057                 err = -ENOMEM;
1058                 goto err_mtt;
1059         }
1060
1061         i = n = 0;
1062
1063         write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1064
1065         list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1066                 for (j = 0; j < chunk->nmap; ++j) {
1067                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1068                         for (k = 0; k < len; ++k) {
1069                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1070                                         mr->umem->page_size * k;
1071                                 /*
1072                                  * Be friendly to write_mtt and pass it chunks
1073                                  * of appropriate size.
1074                                  */
1075                                 if (i == write_mtt_size) {
1076                                         err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1077                                         if (err)
1078                                                 goto mtt_done;
1079                                         n += i;
1080                                         i = 0;
1081                                 }
1082                         }
1083                 }
1084
1085         if (i)
1086                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1087 mtt_done:
1088         free_page((unsigned long) pages);
1089         if (err)
1090                 goto err_mtt;
1091
1092         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1093                              convert_access(acc), mr);
1094
1095         if (err)
1096                 goto err_mtt;
1097
1098         return &mr->ibmr;
1099
1100 err_mtt:
1101         mthca_free_mtt(dev, mr->mtt);
1102
1103 err_umem:
1104         ib_umem_release(mr->umem);
1105
1106 err:
1107         kfree(mr);
1108         return ERR_PTR(err);
1109 }
1110
1111 static int mthca_dereg_mr(struct ib_mr *mr)
1112 {
1113         struct mthca_mr *mmr = to_mmr(mr);
1114
1115         mthca_free_mr(to_mdev(mr->device), mmr);
1116         if (mmr->umem)
1117                 ib_umem_release(mmr->umem);
1118         kfree(mmr);
1119
1120         return 0;
1121 }
1122
1123 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1124                                       struct ib_fmr_attr *fmr_attr)
1125 {
1126         struct mthca_fmr *fmr;
1127         int err;
1128
1129         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1130         if (!fmr)
1131                 return ERR_PTR(-ENOMEM);
1132
1133         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1134         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1135                              convert_access(mr_access_flags), fmr);
1136
1137         if (err) {
1138                 kfree(fmr);
1139                 return ERR_PTR(err);
1140         }
1141
1142         return &fmr->ibmr;
1143 }
1144
1145 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1146 {
1147         struct mthca_fmr *mfmr = to_mfmr(fmr);
1148         int err;
1149
1150         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1151         if (err)
1152                 return err;
1153
1154         kfree(mfmr);
1155         return 0;
1156 }
1157
1158 static int mthca_unmap_fmr(struct list_head *fmr_list)
1159 {
1160         struct ib_fmr *fmr;
1161         int err;
1162         u8 status;
1163         struct mthca_dev *mdev = NULL;
1164
1165         list_for_each_entry(fmr, fmr_list, list) {
1166                 if (mdev && to_mdev(fmr->device) != mdev)
1167                         return -EINVAL;
1168                 mdev = to_mdev(fmr->device);
1169         }
1170
1171         if (!mdev)
1172                 return 0;
1173
1174         if (mthca_is_memfree(mdev)) {
1175                 list_for_each_entry(fmr, fmr_list, list)
1176                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1177
1178                 wmb();
1179         } else
1180                 list_for_each_entry(fmr, fmr_list, list)
1181                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1182
1183         err = mthca_SYNC_TPT(mdev, &status);
1184         if (err)
1185                 return err;
1186         if (status)
1187                 return -EINVAL;
1188         return 0;
1189 }
1190
1191 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1192                         char *buf)
1193 {
1194         struct mthca_dev *dev =
1195                 container_of(device, struct mthca_dev, ib_dev.dev);
1196         return sprintf(buf, "%x\n", dev->rev_id);
1197 }
1198
1199 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1200                            char *buf)
1201 {
1202         struct mthca_dev *dev =
1203                 container_of(device, struct mthca_dev, ib_dev.dev);
1204         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1205                        (int) (dev->fw_ver >> 16) & 0xffff,
1206                        (int) dev->fw_ver & 0xffff);
1207 }
1208
1209 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1210                         char *buf)
1211 {
1212         struct mthca_dev *dev =
1213                 container_of(device, struct mthca_dev, ib_dev.dev);
1214         switch (dev->pdev->device) {
1215         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1216                 return sprintf(buf, "MT23108\n");
1217         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1218                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1219         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1220                 return sprintf(buf, "MT25208\n");
1221         case PCI_DEVICE_ID_MELLANOX_SINAI:
1222         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1223                 return sprintf(buf, "MT25204\n");
1224         default:
1225                 return sprintf(buf, "unknown\n");
1226         }
1227 }
1228
1229 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1230                           char *buf)
1231 {
1232         struct mthca_dev *dev =
1233                 container_of(device, struct mthca_dev, ib_dev.dev);
1234         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1235 }
1236
1237 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1238 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1239 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1240 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1241
1242 static struct device_attribute *mthca_dev_attributes[] = {
1243         &dev_attr_hw_rev,
1244         &dev_attr_fw_ver,
1245         &dev_attr_hca_type,
1246         &dev_attr_board_id
1247 };
1248
1249 static int mthca_init_node_data(struct mthca_dev *dev)
1250 {
1251         struct ib_smp *in_mad  = NULL;
1252         struct ib_smp *out_mad = NULL;
1253         int err = -ENOMEM;
1254         u8 status;
1255
1256         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1257         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1258         if (!in_mad || !out_mad)
1259                 goto out;
1260
1261         init_query_mad(in_mad);
1262         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1263
1264         err = mthca_MAD_IFC(dev, 1, 1,
1265                             1, NULL, NULL, in_mad, out_mad,
1266                             &status);
1267         if (err)
1268                 goto out;
1269         if (status) {
1270                 err = -EINVAL;
1271                 goto out;
1272         }
1273
1274         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1275
1276         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1277
1278         err = mthca_MAD_IFC(dev, 1, 1,
1279                             1, NULL, NULL, in_mad, out_mad,
1280                             &status);
1281         if (err)
1282                 goto out;
1283         if (status) {
1284                 err = -EINVAL;
1285                 goto out;
1286         }
1287
1288         if (mthca_is_memfree(dev))
1289                 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1290         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1291
1292 out:
1293         kfree(in_mad);
1294         kfree(out_mad);
1295         return err;
1296 }
1297
1298 int mthca_register_device(struct mthca_dev *dev)
1299 {
1300         int ret;
1301         int i;
1302
1303         ret = mthca_init_node_data(dev);
1304         if (ret)
1305                 return ret;
1306
1307         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1308         dev->ib_dev.owner                = THIS_MODULE;
1309
1310         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1311         dev->ib_dev.uverbs_cmd_mask      =
1312                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1313                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1314                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1315                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1316                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1317                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1318                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1319                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1320                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1321                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1322                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1323                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1324                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1325                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1326                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1327                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1328                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1329         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1330         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1331         dev->ib_dev.num_comp_vectors     = 1;
1332         dev->ib_dev.dma_device           = &dev->pdev->dev;
1333         dev->ib_dev.query_device         = mthca_query_device;
1334         dev->ib_dev.query_port           = mthca_query_port;
1335         dev->ib_dev.modify_device        = mthca_modify_device;
1336         dev->ib_dev.modify_port          = mthca_modify_port;
1337         dev->ib_dev.query_pkey           = mthca_query_pkey;
1338         dev->ib_dev.query_gid            = mthca_query_gid;
1339         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1340         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1341         dev->ib_dev.mmap                 = mthca_mmap_uar;
1342         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1343         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1344         dev->ib_dev.create_ah            = mthca_ah_create;
1345         dev->ib_dev.query_ah             = mthca_ah_query;
1346         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1347
1348         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1349                 dev->ib_dev.create_srq           = mthca_create_srq;
1350                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1351                 dev->ib_dev.query_srq            = mthca_query_srq;
1352                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1353                 dev->ib_dev.uverbs_cmd_mask     |=
1354                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1355                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1356                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1357                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1358
1359                 if (mthca_is_memfree(dev))
1360                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1361                 else
1362                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1363         }
1364
1365         dev->ib_dev.create_qp            = mthca_create_qp;
1366         dev->ib_dev.modify_qp            = mthca_modify_qp;
1367         dev->ib_dev.query_qp             = mthca_query_qp;
1368         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1369         dev->ib_dev.create_cq            = mthca_create_cq;
1370         dev->ib_dev.resize_cq            = mthca_resize_cq;
1371         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1372         dev->ib_dev.poll_cq              = mthca_poll_cq;
1373         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1374         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1375         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1376         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1377
1378         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1379                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1380                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1381                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1382                 if (mthca_is_memfree(dev))
1383                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1384                 else
1385                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1386         }
1387
1388         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1389         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1390         dev->ib_dev.process_mad          = mthca_process_mad;
1391
1392         if (mthca_is_memfree(dev)) {
1393                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1394                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1395                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1396         } else {
1397                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1398                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1399                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1400         }
1401
1402         mutex_init(&dev->cap_mask_mutex);
1403
1404         ret = ib_register_device(&dev->ib_dev);
1405         if (ret)
1406                 return ret;
1407
1408         for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1409                 ret = device_create_file(&dev->ib_dev.dev,
1410                                          mthca_dev_attributes[i]);
1411                 if (ret) {
1412                         ib_unregister_device(&dev->ib_dev);
1413                         return ret;
1414                 }
1415         }
1416
1417         mthca_start_catas_poll(dev);
1418
1419         return 0;
1420 }
1421
1422 void mthca_unregister_device(struct mthca_dev *dev)
1423 {
1424         mthca_stop_catas_poll(dev);
1425         ib_unregister_device(&dev->ib_dev);
1426 }