IB/mthca: Query port fix
[linux-2.6.git] / drivers / infiniband / hw / mthca / mthca_provider.c
1 /*
2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
5  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7  *
8  * This software is available to you under a choice of one of two
9  * licenses.  You may choose to be licensed under the terms of the GNU
10  * General Public License (GPL) Version 2, available from the file
11  * COPYING in the main directory of this source tree, or the
12  * OpenIB.org BSD license below:
13  *
14  *     Redistribution and use in source and binary forms, with or
15  *     without modification, are permitted provided that the following
16  *     conditions are met:
17  *
18  *      - Redistributions of source code must retain the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer.
21  *
22  *      - Redistributions in binary form must reproduce the above
23  *        copyright notice, this list of conditions and the following
24  *        disclaimer in the documentation and/or other materials
25  *        provided with the distribution.
26  *
27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34  * SOFTWARE.
35  *
36  * $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
37  */
38
39 #include <rdma/ib_smi.h>
40 #include <rdma/ib_user_verbs.h>
41 #include <linux/mm.h>
42
43 #include "mthca_dev.h"
44 #include "mthca_cmd.h"
45 #include "mthca_user.h"
46 #include "mthca_memfree.h"
47
48 static void init_query_mad(struct ib_smp *mad)
49 {
50         mad->base_version  = 1;
51         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
52         mad->class_version = 1;
53         mad->method        = IB_MGMT_METHOD_GET;
54 }
55
56 static int mthca_query_device(struct ib_device *ibdev,
57                               struct ib_device_attr *props)
58 {
59         struct ib_smp *in_mad  = NULL;
60         struct ib_smp *out_mad = NULL;
61         int err = -ENOMEM;
62         struct mthca_dev* mdev = to_mdev(ibdev);
63
64         u8 status;
65
66         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
67         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
68         if (!in_mad || !out_mad)
69                 goto out;
70
71         memset(props, 0, sizeof *props);
72
73         props->fw_ver              = mdev->fw_ver;
74
75         init_query_mad(in_mad);
76         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
77
78         err = mthca_MAD_IFC(mdev, 1, 1,
79                             1, NULL, NULL, in_mad, out_mad,
80                             &status);
81         if (err)
82                 goto out;
83         if (status) {
84                 err = -EINVAL;
85                 goto out;
86         }
87
88         props->device_cap_flags    = mdev->device_cap_flags;
89         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
90                 0xffffff;
91         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
92         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
93         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
94
95         props->max_mr_size         = ~0ull;
96         props->page_size_cap       = mdev->limits.page_size_cap;
97         props->max_qp              = mdev->limits.num_qps - mdev->limits.reserved_qps;
98         props->max_qp_wr           = mdev->limits.max_wqes;
99         props->max_sge             = mdev->limits.max_sg;
100         props->max_cq              = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
101         props->max_cqe             = mdev->limits.max_cqes;
102         props->max_mr              = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
103         props->max_pd              = mdev->limits.num_pds - mdev->limits.reserved_pds;
104         props->max_qp_rd_atom      = 1 << mdev->qp_table.rdb_shift;
105         props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
106         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
107         props->max_srq             = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
108         props->max_srq_wr          = mdev->limits.max_srq_wqes;
109         props->max_srq_sge         = mdev->limits.max_srq_sge;
110         props->local_ca_ack_delay  = mdev->limits.local_ca_ack_delay;
111         props->atomic_cap          = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
112                                         IB_ATOMIC_HCA : IB_ATOMIC_NONE;
113         props->max_pkeys           = mdev->limits.pkey_table_len;
114         props->max_mcast_grp       = mdev->limits.num_mgms + mdev->limits.num_amgms;
115         props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
116         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
117                                            props->max_mcast_grp;
118         /*
119          * If Sinai memory key optimization is being used, then only
120          * the 8-bit key portion will change.  For other HCAs, the
121          * unused index bits will also be used for FMR remapping.
122          */
123         if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
124                 props->max_map_per_fmr = 255;
125         else
126                 props->max_map_per_fmr =
127                         (1 << (32 - long_log2(mdev->limits.num_mpts))) - 1;
128
129         err = 0;
130  out:
131         kfree(in_mad);
132         kfree(out_mad);
133         return err;
134 }
135
136 static int mthca_query_port(struct ib_device *ibdev,
137                             u8 port, struct ib_port_attr *props)
138 {
139         struct ib_smp *in_mad  = NULL;
140         struct ib_smp *out_mad = NULL;
141         int err = -ENOMEM;
142         u8 status;
143
144         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
145         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
146         if (!in_mad || !out_mad)
147                 goto out;
148
149         memset(props, 0, sizeof *props);
150
151         init_query_mad(in_mad);
152         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
153         in_mad->attr_mod = cpu_to_be32(port);
154
155         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
156                             port, NULL, NULL, in_mad, out_mad,
157                             &status);
158         if (err)
159                 goto out;
160         if (status) {
161                 err = -EINVAL;
162                 goto out;
163         }
164
165         props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
166         props->lmc               = out_mad->data[34] & 0x7;
167         props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
168         props->sm_sl             = out_mad->data[36] & 0xf;
169         props->state             = out_mad->data[32] & 0xf;
170         props->phys_state        = out_mad->data[33] >> 4;
171         props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
172         props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
173         props->max_msg_sz        = 0x80000000;
174         props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
175         props->bad_pkey_cntr     = be16_to_cpup((__be16 *) (out_mad->data + 46));
176         props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
177         props->active_width      = out_mad->data[31] & 0xf;
178         props->active_speed      = out_mad->data[35] >> 4;
179         props->max_mtu           = out_mad->data[41] & 0xf;
180         props->active_mtu        = out_mad->data[36] >> 4;
181         props->subnet_timeout    = out_mad->data[51] & 0x1f;
182         props->max_vl_num        = out_mad->data[37] >> 4;
183         props->init_type_reply   = out_mad->data[41] >> 4;
184
185  out:
186         kfree(in_mad);
187         kfree(out_mad);
188         return err;
189 }
190
191 static int mthca_modify_device(struct ib_device *ibdev,
192                                int mask,
193                                struct ib_device_modify *props)
194 {
195         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
196                 return -EOPNOTSUPP;
197
198         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
199                 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
200                         return -ERESTARTSYS;
201                 memcpy(ibdev->node_desc, props->node_desc, 64);
202                 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
203         }
204
205         return 0;
206 }
207
208 static int mthca_modify_port(struct ib_device *ibdev,
209                              u8 port, int port_modify_mask,
210                              struct ib_port_modify *props)
211 {
212         struct mthca_set_ib_param set_ib;
213         struct ib_port_attr attr;
214         int err;
215         u8 status;
216
217         if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
218                 return -ERESTARTSYS;
219
220         err = mthca_query_port(ibdev, port, &attr);
221         if (err)
222                 goto out;
223
224         set_ib.set_si_guid     = 0;
225         set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
226
227         set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
228                 ~props->clr_port_cap_mask;
229
230         err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
231         if (err)
232                 goto out;
233         if (status) {
234                 err = -EINVAL;
235                 goto out;
236         }
237
238 out:
239         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
240         return err;
241 }
242
243 static int mthca_query_pkey(struct ib_device *ibdev,
244                             u8 port, u16 index, u16 *pkey)
245 {
246         struct ib_smp *in_mad  = NULL;
247         struct ib_smp *out_mad = NULL;
248         int err = -ENOMEM;
249         u8 status;
250
251         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
252         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
253         if (!in_mad || !out_mad)
254                 goto out;
255
256         init_query_mad(in_mad);
257         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
258         in_mad->attr_mod = cpu_to_be32(index / 32);
259
260         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
261                             port, NULL, NULL, in_mad, out_mad,
262                             &status);
263         if (err)
264                 goto out;
265         if (status) {
266                 err = -EINVAL;
267                 goto out;
268         }
269
270         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
271
272  out:
273         kfree(in_mad);
274         kfree(out_mad);
275         return err;
276 }
277
278 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
279                            int index, union ib_gid *gid)
280 {
281         struct ib_smp *in_mad  = NULL;
282         struct ib_smp *out_mad = NULL;
283         int err = -ENOMEM;
284         u8 status;
285
286         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
287         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
288         if (!in_mad || !out_mad)
289                 goto out;
290
291         init_query_mad(in_mad);
292         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
293         in_mad->attr_mod = cpu_to_be32(port);
294
295         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
296                             port, NULL, NULL, in_mad, out_mad,
297                             &status);
298         if (err)
299                 goto out;
300         if (status) {
301                 err = -EINVAL;
302                 goto out;
303         }
304
305         memcpy(gid->raw, out_mad->data + 8, 8);
306
307         init_query_mad(in_mad);
308         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
309         in_mad->attr_mod = cpu_to_be32(index / 8);
310
311         err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
312                             port, NULL, NULL, in_mad, out_mad,
313                             &status);
314         if (err)
315                 goto out;
316         if (status) {
317                 err = -EINVAL;
318                 goto out;
319         }
320
321         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
322
323  out:
324         kfree(in_mad);
325         kfree(out_mad);
326         return err;
327 }
328
329 static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
330                                                 struct ib_udata *udata)
331 {
332         struct mthca_alloc_ucontext_resp uresp;
333         struct mthca_ucontext           *context;
334         int                              err;
335
336         memset(&uresp, 0, sizeof uresp);
337
338         uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
339         if (mthca_is_memfree(to_mdev(ibdev)))
340                 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
341         else
342                 uresp.uarc_size = 0;
343
344         context = kmalloc(sizeof *context, GFP_KERNEL);
345         if (!context)
346                 return ERR_PTR(-ENOMEM);
347
348         err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
349         if (err) {
350                 kfree(context);
351                 return ERR_PTR(err);
352         }
353
354         context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
355         if (IS_ERR(context->db_tab)) {
356                 err = PTR_ERR(context->db_tab);
357                 mthca_uar_free(to_mdev(ibdev), &context->uar);
358                 kfree(context);
359                 return ERR_PTR(err);
360         }
361
362         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
363                 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
364                 mthca_uar_free(to_mdev(ibdev), &context->uar);
365                 kfree(context);
366                 return ERR_PTR(-EFAULT);
367         }
368
369         return &context->ibucontext;
370 }
371
372 static int mthca_dealloc_ucontext(struct ib_ucontext *context)
373 {
374         mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
375                                   to_mucontext(context)->db_tab);
376         mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
377         kfree(to_mucontext(context));
378
379         return 0;
380 }
381
382 static int mthca_mmap_uar(struct ib_ucontext *context,
383                           struct vm_area_struct *vma)
384 {
385         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
386                 return -EINVAL;
387
388         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
389
390         if (io_remap_pfn_range(vma, vma->vm_start,
391                                to_mucontext(context)->uar.pfn,
392                                PAGE_SIZE, vma->vm_page_prot))
393                 return -EAGAIN;
394
395         return 0;
396 }
397
398 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
399                                     struct ib_ucontext *context,
400                                     struct ib_udata *udata)
401 {
402         struct mthca_pd *pd;
403         int err;
404
405         pd = kmalloc(sizeof *pd, GFP_KERNEL);
406         if (!pd)
407                 return ERR_PTR(-ENOMEM);
408
409         err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
410         if (err) {
411                 kfree(pd);
412                 return ERR_PTR(err);
413         }
414
415         if (context) {
416                 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
417                         mthca_pd_free(to_mdev(ibdev), pd);
418                         kfree(pd);
419                         return ERR_PTR(-EFAULT);
420                 }
421         }
422
423         return &pd->ibpd;
424 }
425
426 static int mthca_dealloc_pd(struct ib_pd *pd)
427 {
428         mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
429         kfree(pd);
430
431         return 0;
432 }
433
434 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
435                                      struct ib_ah_attr *ah_attr)
436 {
437         int err;
438         struct mthca_ah *ah;
439
440         ah = kmalloc(sizeof *ah, GFP_ATOMIC);
441         if (!ah)
442                 return ERR_PTR(-ENOMEM);
443
444         err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
445         if (err) {
446                 kfree(ah);
447                 return ERR_PTR(err);
448         }
449
450         return &ah->ibah;
451 }
452
453 static int mthca_ah_destroy(struct ib_ah *ah)
454 {
455         mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
456         kfree(ah);
457
458         return 0;
459 }
460
461 static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
462                                        struct ib_srq_init_attr *init_attr,
463                                        struct ib_udata *udata)
464 {
465         struct mthca_create_srq ucmd;
466         struct mthca_ucontext *context = NULL;
467         struct mthca_srq *srq;
468         int err;
469
470         srq = kmalloc(sizeof *srq, GFP_KERNEL);
471         if (!srq)
472                 return ERR_PTR(-ENOMEM);
473
474         if (pd->uobject) {
475                 context = to_mucontext(pd->uobject->context);
476
477                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
478                         err = -EFAULT;
479                         goto err_free;
480                 }
481
482                 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
483                                         context->db_tab, ucmd.db_index,
484                                         ucmd.db_page);
485
486                 if (err)
487                         goto err_free;
488
489                 srq->mr.ibmr.lkey = ucmd.lkey;
490                 srq->db_index     = ucmd.db_index;
491         }
492
493         err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
494                               &init_attr->attr, srq);
495
496         if (err && pd->uobject)
497                 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
498                                     context->db_tab, ucmd.db_index);
499
500         if (err)
501                 goto err_free;
502
503         if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
504                 mthca_free_srq(to_mdev(pd->device), srq);
505                 err = -EFAULT;
506                 goto err_free;
507         }
508
509         return &srq->ibsrq;
510
511 err_free:
512         kfree(srq);
513
514         return ERR_PTR(err);
515 }
516
517 static int mthca_destroy_srq(struct ib_srq *srq)
518 {
519         struct mthca_ucontext *context;
520
521         if (srq->uobject) {
522                 context = to_mucontext(srq->uobject->context);
523
524                 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
525                                     context->db_tab, to_msrq(srq)->db_index);
526         }
527
528         mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
529         kfree(srq);
530
531         return 0;
532 }
533
534 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
535                                      struct ib_qp_init_attr *init_attr,
536                                      struct ib_udata *udata)
537 {
538         struct mthca_create_qp ucmd;
539         struct mthca_qp *qp;
540         int err;
541
542         switch (init_attr->qp_type) {
543         case IB_QPT_RC:
544         case IB_QPT_UC:
545         case IB_QPT_UD:
546         {
547                 struct mthca_ucontext *context;
548
549                 qp = kmalloc(sizeof *qp, GFP_KERNEL);
550                 if (!qp)
551                         return ERR_PTR(-ENOMEM);
552
553                 if (pd->uobject) {
554                         context = to_mucontext(pd->uobject->context);
555
556                         if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
557                                 kfree(qp);
558                                 return ERR_PTR(-EFAULT);
559                         }
560
561                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
562                                                 context->db_tab,
563                                                 ucmd.sq_db_index, ucmd.sq_db_page);
564                         if (err) {
565                                 kfree(qp);
566                                 return ERR_PTR(err);
567                         }
568
569                         err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
570                                                 context->db_tab,
571                                                 ucmd.rq_db_index, ucmd.rq_db_page);
572                         if (err) {
573                                 mthca_unmap_user_db(to_mdev(pd->device),
574                                                     &context->uar,
575                                                     context->db_tab,
576                                                     ucmd.sq_db_index);
577                                 kfree(qp);
578                                 return ERR_PTR(err);
579                         }
580
581                         qp->mr.ibmr.lkey = ucmd.lkey;
582                         qp->sq.db_index  = ucmd.sq_db_index;
583                         qp->rq.db_index  = ucmd.rq_db_index;
584                 }
585
586                 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
587                                      to_mcq(init_attr->send_cq),
588                                      to_mcq(init_attr->recv_cq),
589                                      init_attr->qp_type, init_attr->sq_sig_type,
590                                      &init_attr->cap, qp);
591
592                 if (err && pd->uobject) {
593                         context = to_mucontext(pd->uobject->context);
594
595                         mthca_unmap_user_db(to_mdev(pd->device),
596                                             &context->uar,
597                                             context->db_tab,
598                                             ucmd.sq_db_index);
599                         mthca_unmap_user_db(to_mdev(pd->device),
600                                             &context->uar,
601                                             context->db_tab,
602                                             ucmd.rq_db_index);
603                 }
604
605                 qp->ibqp.qp_num = qp->qpn;
606                 break;
607         }
608         case IB_QPT_SMI:
609         case IB_QPT_GSI:
610         {
611                 /* Don't allow userspace to create special QPs */
612                 if (pd->uobject)
613                         return ERR_PTR(-EINVAL);
614
615                 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
616                 if (!qp)
617                         return ERR_PTR(-ENOMEM);
618
619                 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
620
621                 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
622                                       to_mcq(init_attr->send_cq),
623                                       to_mcq(init_attr->recv_cq),
624                                       init_attr->sq_sig_type, &init_attr->cap,
625                                       qp->ibqp.qp_num, init_attr->port_num,
626                                       to_msqp(qp));
627                 break;
628         }
629         default:
630                 /* Don't support raw QPs */
631                 return ERR_PTR(-ENOSYS);
632         }
633
634         if (err) {
635                 kfree(qp);
636                 return ERR_PTR(err);
637         }
638
639         init_attr->cap.max_send_wr     = qp->sq.max;
640         init_attr->cap.max_recv_wr     = qp->rq.max;
641         init_attr->cap.max_send_sge    = qp->sq.max_gs;
642         init_attr->cap.max_recv_sge    = qp->rq.max_gs;
643         init_attr->cap.max_inline_data = qp->max_inline_data;
644
645         return &qp->ibqp;
646 }
647
648 static int mthca_destroy_qp(struct ib_qp *qp)
649 {
650         if (qp->uobject) {
651                 mthca_unmap_user_db(to_mdev(qp->device),
652                                     &to_mucontext(qp->uobject->context)->uar,
653                                     to_mucontext(qp->uobject->context)->db_tab,
654                                     to_mqp(qp)->sq.db_index);
655                 mthca_unmap_user_db(to_mdev(qp->device),
656                                     &to_mucontext(qp->uobject->context)->uar,
657                                     to_mucontext(qp->uobject->context)->db_tab,
658                                     to_mqp(qp)->rq.db_index);
659         }
660         mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
661         kfree(qp);
662         return 0;
663 }
664
665 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
666                                      struct ib_ucontext *context,
667                                      struct ib_udata *udata)
668 {
669         struct mthca_create_cq ucmd;
670         struct mthca_cq *cq;
671         int nent;
672         int err;
673
674         if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
675                 return ERR_PTR(-EINVAL);
676
677         if (context) {
678                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
679                         return ERR_PTR(-EFAULT);
680
681                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
682                                         to_mucontext(context)->db_tab,
683                                         ucmd.set_db_index, ucmd.set_db_page);
684                 if (err)
685                         return ERR_PTR(err);
686
687                 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
688                                         to_mucontext(context)->db_tab,
689                                         ucmd.arm_db_index, ucmd.arm_db_page);
690                 if (err)
691                         goto err_unmap_set;
692         }
693
694         cq = kmalloc(sizeof *cq, GFP_KERNEL);
695         if (!cq) {
696                 err = -ENOMEM;
697                 goto err_unmap_arm;
698         }
699
700         if (context) {
701                 cq->buf.mr.ibmr.lkey = ucmd.lkey;
702                 cq->set_ci_db_index  = ucmd.set_db_index;
703                 cq->arm_db_index     = ucmd.arm_db_index;
704         }
705
706         for (nent = 1; nent <= entries; nent <<= 1)
707                 ; /* nothing */
708
709         err = mthca_init_cq(to_mdev(ibdev), nent,
710                             context ? to_mucontext(context) : NULL,
711                             context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
712                             cq);
713         if (err)
714                 goto err_free;
715
716         if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
717                 mthca_free_cq(to_mdev(ibdev), cq);
718                 goto err_free;
719         }
720
721         cq->resize_buf = NULL;
722
723         return &cq->ibcq;
724
725 err_free:
726         kfree(cq);
727
728 err_unmap_arm:
729         if (context)
730                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
731                                     to_mucontext(context)->db_tab, ucmd.arm_db_index);
732
733 err_unmap_set:
734         if (context)
735                 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
736                                     to_mucontext(context)->db_tab, ucmd.set_db_index);
737
738         return ERR_PTR(err);
739 }
740
741 static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
742                                   int entries)
743 {
744         int ret;
745
746         spin_lock_irq(&cq->lock);
747         if (cq->resize_buf) {
748                 ret = -EBUSY;
749                 goto unlock;
750         }
751
752         cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
753         if (!cq->resize_buf) {
754                 ret = -ENOMEM;
755                 goto unlock;
756         }
757
758         cq->resize_buf->state = CQ_RESIZE_ALLOC;
759
760         ret = 0;
761
762 unlock:
763         spin_unlock_irq(&cq->lock);
764
765         if (ret)
766                 return ret;
767
768         ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
769         if (ret) {
770                 spin_lock_irq(&cq->lock);
771                 kfree(cq->resize_buf);
772                 cq->resize_buf = NULL;
773                 spin_unlock_irq(&cq->lock);
774                 return ret;
775         }
776
777         cq->resize_buf->cqe = entries - 1;
778
779         spin_lock_irq(&cq->lock);
780         cq->resize_buf->state = CQ_RESIZE_READY;
781         spin_unlock_irq(&cq->lock);
782
783         return 0;
784 }
785
786 static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
787 {
788         struct mthca_dev *dev = to_mdev(ibcq->device);
789         struct mthca_cq *cq = to_mcq(ibcq);
790         struct mthca_resize_cq ucmd;
791         u32 lkey;
792         u8 status;
793         int ret;
794
795         if (entries < 1 || entries > dev->limits.max_cqes)
796                 return -EINVAL;
797
798         mutex_lock(&cq->mutex);
799
800         entries = roundup_pow_of_two(entries + 1);
801         if (entries == ibcq->cqe + 1) {
802                 ret = 0;
803                 goto out;
804         }
805
806         if (cq->is_kernel) {
807                 ret = mthca_alloc_resize_buf(dev, cq, entries);
808                 if (ret)
809                         goto out;
810                 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
811         } else {
812                 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
813                         ret = -EFAULT;
814                         goto out;
815                 }
816                 lkey = ucmd.lkey;
817         }
818
819         ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, long_log2(entries), &status);
820         if (status)
821                 ret = -EINVAL;
822
823         if (ret) {
824                 if (cq->resize_buf) {
825                         mthca_free_cq_buf(dev, &cq->resize_buf->buf,
826                                           cq->resize_buf->cqe);
827                         kfree(cq->resize_buf);
828                         spin_lock_irq(&cq->lock);
829                         cq->resize_buf = NULL;
830                         spin_unlock_irq(&cq->lock);
831                 }
832                 goto out;
833         }
834
835         if (cq->is_kernel) {
836                 struct mthca_cq_buf tbuf;
837                 int tcqe;
838
839                 spin_lock_irq(&cq->lock);
840                 if (cq->resize_buf->state == CQ_RESIZE_READY) {
841                         mthca_cq_resize_copy_cqes(cq);
842                         tbuf         = cq->buf;
843                         tcqe         = cq->ibcq.cqe;
844                         cq->buf      = cq->resize_buf->buf;
845                         cq->ibcq.cqe = cq->resize_buf->cqe;
846                 } else {
847                         tbuf = cq->resize_buf->buf;
848                         tcqe = cq->resize_buf->cqe;
849                 }
850
851                 kfree(cq->resize_buf);
852                 cq->resize_buf = NULL;
853                 spin_unlock_irq(&cq->lock);
854
855                 mthca_free_cq_buf(dev, &tbuf, tcqe);
856         } else
857                 ibcq->cqe = entries - 1;
858
859 out:
860         mutex_unlock(&cq->mutex);
861
862         return ret;
863 }
864
865 static int mthca_destroy_cq(struct ib_cq *cq)
866 {
867         if (cq->uobject) {
868                 mthca_unmap_user_db(to_mdev(cq->device),
869                                     &to_mucontext(cq->uobject->context)->uar,
870                                     to_mucontext(cq->uobject->context)->db_tab,
871                                     to_mcq(cq)->arm_db_index);
872                 mthca_unmap_user_db(to_mdev(cq->device),
873                                     &to_mucontext(cq->uobject->context)->uar,
874                                     to_mucontext(cq->uobject->context)->db_tab,
875                                     to_mcq(cq)->set_ci_db_index);
876         }
877         mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
878         kfree(cq);
879
880         return 0;
881 }
882
883 static inline u32 convert_access(int acc)
884 {
885         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC       : 0) |
886                (acc & IB_ACCESS_REMOTE_WRITE  ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
887                (acc & IB_ACCESS_REMOTE_READ   ? MTHCA_MPT_FLAG_REMOTE_READ  : 0) |
888                (acc & IB_ACCESS_LOCAL_WRITE   ? MTHCA_MPT_FLAG_LOCAL_WRITE  : 0) |
889                MTHCA_MPT_FLAG_LOCAL_READ;
890 }
891
892 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
893 {
894         struct mthca_mr *mr;
895         int err;
896
897         mr = kmalloc(sizeof *mr, GFP_KERNEL);
898         if (!mr)
899                 return ERR_PTR(-ENOMEM);
900
901         err = mthca_mr_alloc_notrans(to_mdev(pd->device),
902                                      to_mpd(pd)->pd_num,
903                                      convert_access(acc), mr);
904
905         if (err) {
906                 kfree(mr);
907                 return ERR_PTR(err);
908         }
909
910         return &mr->ibmr;
911 }
912
913 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd       *pd,
914                                        struct ib_phys_buf *buffer_list,
915                                        int                 num_phys_buf,
916                                        int                 acc,
917                                        u64                *iova_start)
918 {
919         struct mthca_mr *mr;
920         u64 *page_list;
921         u64 total_size;
922         u64 mask;
923         int shift;
924         int npages;
925         int err;
926         int i, j, n;
927
928         /* First check that we have enough alignment */
929         if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
930                 return ERR_PTR(-EINVAL);
931
932         mask = 0;
933         total_size = 0;
934         for (i = 0; i < num_phys_buf; ++i) {
935                 if (i != 0)
936                         mask |= buffer_list[i].addr;
937                 if (i != num_phys_buf - 1)
938                         mask |= buffer_list[i].addr + buffer_list[i].size;
939
940                 total_size += buffer_list[i].size;
941         }
942
943         if (mask & ~PAGE_MASK)
944                 return ERR_PTR(-EINVAL);
945
946         /* Find largest page shift we can use to cover buffers */
947         for (shift = PAGE_SHIFT; shift < 31; ++shift)
948                 if (num_phys_buf > 1) {
949                         if ((1ULL << shift) & mask)
950                                 break;
951                 } else {
952                         if (1ULL << shift >=
953                             buffer_list[0].size +
954                             (buffer_list[0].addr & ((1ULL << shift) - 1)))
955                                 break;
956                 }
957
958         buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
959         buffer_list[0].addr &= ~0ull << shift;
960
961         mr = kmalloc(sizeof *mr, GFP_KERNEL);
962         if (!mr)
963                 return ERR_PTR(-ENOMEM);
964
965         npages = 0;
966         for (i = 0; i < num_phys_buf; ++i)
967                 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
968
969         if (!npages)
970                 return &mr->ibmr;
971
972         page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
973         if (!page_list) {
974                 kfree(mr);
975                 return ERR_PTR(-ENOMEM);
976         }
977
978         n = 0;
979         for (i = 0; i < num_phys_buf; ++i)
980                 for (j = 0;
981                      j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
982                      ++j)
983                         page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
984
985         mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
986                   "in PD %x; shift %d, npages %d.\n",
987                   (unsigned long long) buffer_list[0].addr,
988                   (unsigned long long) *iova_start,
989                   to_mpd(pd)->pd_num,
990                   shift, npages);
991
992         err = mthca_mr_alloc_phys(to_mdev(pd->device),
993                                   to_mpd(pd)->pd_num,
994                                   page_list, shift, npages,
995                                   *iova_start, total_size,
996                                   convert_access(acc), mr);
997
998         if (err) {
999                 kfree(page_list);
1000                 kfree(mr);
1001                 return ERR_PTR(err);
1002         }
1003
1004         kfree(page_list);
1005         return &mr->ibmr;
1006 }
1007
1008 static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
1009                                        int acc, struct ib_udata *udata)
1010 {
1011         struct mthca_dev *dev = to_mdev(pd->device);
1012         struct ib_umem_chunk *chunk;
1013         struct mthca_mr *mr;
1014         u64 *pages;
1015         int shift, n, len;
1016         int i, j, k;
1017         int err = 0;
1018
1019         shift = ffs(region->page_size) - 1;
1020
1021         mr = kmalloc(sizeof *mr, GFP_KERNEL);
1022         if (!mr)
1023                 return ERR_PTR(-ENOMEM);
1024
1025         n = 0;
1026         list_for_each_entry(chunk, &region->chunk_list, list)
1027                 n += chunk->nents;
1028
1029         mr->mtt = mthca_alloc_mtt(dev, n);
1030         if (IS_ERR(mr->mtt)) {
1031                 err = PTR_ERR(mr->mtt);
1032                 goto err;
1033         }
1034
1035         pages = (u64 *) __get_free_page(GFP_KERNEL);
1036         if (!pages) {
1037                 err = -ENOMEM;
1038                 goto err_mtt;
1039         }
1040
1041         i = n = 0;
1042
1043         list_for_each_entry(chunk, &region->chunk_list, list)
1044                 for (j = 0; j < chunk->nmap; ++j) {
1045                         len = sg_dma_len(&chunk->page_list[j]) >> shift;
1046                         for (k = 0; k < len; ++k) {
1047                                 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1048                                         region->page_size * k;
1049                                 /*
1050                                  * Be friendly to WRITE_MTT command
1051                                  * and leave two empty slots for the
1052                                  * index and reserved fields of the
1053                                  * mailbox.
1054                                  */
1055                                 if (i == PAGE_SIZE / sizeof (u64) - 2) {
1056                                         err = mthca_write_mtt(dev, mr->mtt,
1057                                                               n, pages, i);
1058                                         if (err)
1059                                                 goto mtt_done;
1060                                         n += i;
1061                                         i = 0;
1062                                 }
1063                         }
1064                 }
1065
1066         if (i)
1067                 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1068 mtt_done:
1069         free_page((unsigned long) pages);
1070         if (err)
1071                 goto err_mtt;
1072
1073         err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
1074                              region->length, convert_access(acc), mr);
1075
1076         if (err)
1077                 goto err_mtt;
1078
1079         return &mr->ibmr;
1080
1081 err_mtt:
1082         mthca_free_mtt(dev, mr->mtt);
1083
1084 err:
1085         kfree(mr);
1086         return ERR_PTR(err);
1087 }
1088
1089 static int mthca_dereg_mr(struct ib_mr *mr)
1090 {
1091         struct mthca_mr *mmr = to_mmr(mr);
1092         mthca_free_mr(to_mdev(mr->device), mmr);
1093         kfree(mmr);
1094         return 0;
1095 }
1096
1097 static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1098                                       struct ib_fmr_attr *fmr_attr)
1099 {
1100         struct mthca_fmr *fmr;
1101         int err;
1102
1103         fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1104         if (!fmr)
1105                 return ERR_PTR(-ENOMEM);
1106
1107         memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1108         err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1109                              convert_access(mr_access_flags), fmr);
1110
1111         if (err) {
1112                 kfree(fmr);
1113                 return ERR_PTR(err);
1114         }
1115
1116         return &fmr->ibmr;
1117 }
1118
1119 static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1120 {
1121         struct mthca_fmr *mfmr = to_mfmr(fmr);
1122         int err;
1123
1124         err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1125         if (err)
1126                 return err;
1127
1128         kfree(mfmr);
1129         return 0;
1130 }
1131
1132 static int mthca_unmap_fmr(struct list_head *fmr_list)
1133 {
1134         struct ib_fmr *fmr;
1135         int err;
1136         u8 status;
1137         struct mthca_dev *mdev = NULL;
1138
1139         list_for_each_entry(fmr, fmr_list, list) {
1140                 if (mdev && to_mdev(fmr->device) != mdev)
1141                         return -EINVAL;
1142                 mdev = to_mdev(fmr->device);
1143         }
1144
1145         if (!mdev)
1146                 return 0;
1147
1148         if (mthca_is_memfree(mdev)) {
1149                 list_for_each_entry(fmr, fmr_list, list)
1150                         mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1151
1152                 wmb();
1153         } else
1154                 list_for_each_entry(fmr, fmr_list, list)
1155                         mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1156
1157         err = mthca_SYNC_TPT(mdev, &status);
1158         if (err)
1159                 return err;
1160         if (status)
1161                 return -EINVAL;
1162         return 0;
1163 }
1164
1165 static ssize_t show_rev(struct class_device *cdev, char *buf)
1166 {
1167         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1168         return sprintf(buf, "%x\n", dev->rev_id);
1169 }
1170
1171 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1172 {
1173         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1174         return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1175                        (int) (dev->fw_ver >> 16) & 0xffff,
1176                        (int) dev->fw_ver & 0xffff);
1177 }
1178
1179 static ssize_t show_hca(struct class_device *cdev, char *buf)
1180 {
1181         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1182         switch (dev->pdev->device) {
1183         case PCI_DEVICE_ID_MELLANOX_TAVOR:
1184                 return sprintf(buf, "MT23108\n");
1185         case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1186                 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1187         case PCI_DEVICE_ID_MELLANOX_ARBEL:
1188                 return sprintf(buf, "MT25208\n");
1189         case PCI_DEVICE_ID_MELLANOX_SINAI:
1190         case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1191                 return sprintf(buf, "MT25204\n");
1192         default:
1193                 return sprintf(buf, "unknown\n");
1194         }
1195 }
1196
1197 static ssize_t show_board(struct class_device *cdev, char *buf)
1198 {
1199         struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1200         return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1201 }
1202
1203 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1204 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1205 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1206 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1207
1208 static struct class_device_attribute *mthca_class_attributes[] = {
1209         &class_device_attr_hw_rev,
1210         &class_device_attr_fw_ver,
1211         &class_device_attr_hca_type,
1212         &class_device_attr_board_id
1213 };
1214
1215 static int mthca_init_node_data(struct mthca_dev *dev)
1216 {
1217         struct ib_smp *in_mad  = NULL;
1218         struct ib_smp *out_mad = NULL;
1219         int err = -ENOMEM;
1220         u8 status;
1221
1222         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1223         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1224         if (!in_mad || !out_mad)
1225                 goto out;
1226
1227         init_query_mad(in_mad);
1228         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1229
1230         err = mthca_MAD_IFC(dev, 1, 1,
1231                             1, NULL, NULL, in_mad, out_mad,
1232                             &status);
1233         if (err)
1234                 goto out;
1235         if (status) {
1236                 err = -EINVAL;
1237                 goto out;
1238         }
1239
1240         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1241
1242         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1243
1244         err = mthca_MAD_IFC(dev, 1, 1,
1245                             1, NULL, NULL, in_mad, out_mad,
1246                             &status);
1247         if (err)
1248                 goto out;
1249         if (status) {
1250                 err = -EINVAL;
1251                 goto out;
1252         }
1253
1254         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1255
1256 out:
1257         kfree(in_mad);
1258         kfree(out_mad);
1259         return err;
1260 }
1261
1262 int mthca_register_device(struct mthca_dev *dev)
1263 {
1264         int ret;
1265         int i;
1266
1267         ret = mthca_init_node_data(dev);
1268         if (ret)
1269                 return ret;
1270
1271         strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1272         dev->ib_dev.owner                = THIS_MODULE;
1273
1274         dev->ib_dev.uverbs_abi_ver       = MTHCA_UVERBS_ABI_VERSION;
1275         dev->ib_dev.uverbs_cmd_mask      =
1276                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1277                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1278                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1279                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1280                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1281                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1282                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1283                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1284                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1285                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1286                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1287                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1288                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1289                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1290                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1291                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1292                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1293         dev->ib_dev.node_type            = RDMA_NODE_IB_CA;
1294         dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;
1295         dev->ib_dev.dma_device           = &dev->pdev->dev;
1296         dev->ib_dev.class_dev.dev        = &dev->pdev->dev;
1297         dev->ib_dev.query_device         = mthca_query_device;
1298         dev->ib_dev.query_port           = mthca_query_port;
1299         dev->ib_dev.modify_device        = mthca_modify_device;
1300         dev->ib_dev.modify_port          = mthca_modify_port;
1301         dev->ib_dev.query_pkey           = mthca_query_pkey;
1302         dev->ib_dev.query_gid            = mthca_query_gid;
1303         dev->ib_dev.alloc_ucontext       = mthca_alloc_ucontext;
1304         dev->ib_dev.dealloc_ucontext     = mthca_dealloc_ucontext;
1305         dev->ib_dev.mmap                 = mthca_mmap_uar;
1306         dev->ib_dev.alloc_pd             = mthca_alloc_pd;
1307         dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
1308         dev->ib_dev.create_ah            = mthca_ah_create;
1309         dev->ib_dev.query_ah             = mthca_ah_query;
1310         dev->ib_dev.destroy_ah           = mthca_ah_destroy;
1311
1312         if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1313                 dev->ib_dev.create_srq           = mthca_create_srq;
1314                 dev->ib_dev.modify_srq           = mthca_modify_srq;
1315                 dev->ib_dev.query_srq            = mthca_query_srq;
1316                 dev->ib_dev.destroy_srq          = mthca_destroy_srq;
1317                 dev->ib_dev.uverbs_cmd_mask     |=
1318                         (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1319                         (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1320                         (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1321                         (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1322
1323                 if (mthca_is_memfree(dev))
1324                         dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1325                 else
1326                         dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1327         }
1328
1329         dev->ib_dev.create_qp            = mthca_create_qp;
1330         dev->ib_dev.modify_qp            = mthca_modify_qp;
1331         dev->ib_dev.query_qp             = mthca_query_qp;
1332         dev->ib_dev.destroy_qp           = mthca_destroy_qp;
1333         dev->ib_dev.create_cq            = mthca_create_cq;
1334         dev->ib_dev.resize_cq            = mthca_resize_cq;
1335         dev->ib_dev.destroy_cq           = mthca_destroy_cq;
1336         dev->ib_dev.poll_cq              = mthca_poll_cq;
1337         dev->ib_dev.get_dma_mr           = mthca_get_dma_mr;
1338         dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
1339         dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
1340         dev->ib_dev.dereg_mr             = mthca_dereg_mr;
1341
1342         if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1343                 dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
1344                 dev->ib_dev.unmap_fmr            = mthca_unmap_fmr;
1345                 dev->ib_dev.dealloc_fmr          = mthca_dealloc_fmr;
1346                 if (mthca_is_memfree(dev))
1347                         dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1348                 else
1349                         dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1350         }
1351
1352         dev->ib_dev.attach_mcast         = mthca_multicast_attach;
1353         dev->ib_dev.detach_mcast         = mthca_multicast_detach;
1354         dev->ib_dev.process_mad          = mthca_process_mad;
1355
1356         if (mthca_is_memfree(dev)) {
1357                 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1358                 dev->ib_dev.post_send     = mthca_arbel_post_send;
1359                 dev->ib_dev.post_recv     = mthca_arbel_post_receive;
1360         } else {
1361                 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1362                 dev->ib_dev.post_send     = mthca_tavor_post_send;
1363                 dev->ib_dev.post_recv     = mthca_tavor_post_receive;
1364         }
1365
1366         mutex_init(&dev->cap_mask_mutex);
1367
1368         ret = ib_register_device(&dev->ib_dev);
1369         if (ret)
1370                 return ret;
1371
1372         for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1373                 ret = class_device_create_file(&dev->ib_dev.class_dev,
1374                                                mthca_class_attributes[i]);
1375                 if (ret) {
1376                         ib_unregister_device(&dev->ib_dev);
1377                         return ret;
1378                 }
1379         }
1380
1381         mthca_start_catas_poll(dev);
1382
1383         return 0;
1384 }
1385
1386 void mthca_unregister_device(struct mthca_dev *dev)
1387 {
1388         mthca_stop_catas_poll(dev);
1389         ib_unregister_device(&dev->ib_dev);
1390 }