Loading...
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37#include <rdma/ib_smi.h>
38#include <rdma/ib_umem.h>
39#include <rdma/ib_user_verbs.h>
40
41#include <linux/sched.h>
42#include <linux/slab.h>
43#include <linux/mm.h>
44
45#include "mthca_dev.h"
46#include "mthca_cmd.h"
47#include "mthca_user.h"
48#include "mthca_memfree.h"
49
50static void init_query_mad(struct ib_smp *mad)
51{
52 mad->base_version = 1;
53 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
54 mad->class_version = 1;
55 mad->method = IB_MGMT_METHOD_GET;
56}
57
58static int mthca_query_device(struct ib_device *ibdev,
59 struct ib_device_attr *props)
60{
61 struct ib_smp *in_mad = NULL;
62 struct ib_smp *out_mad = NULL;
63 int err = -ENOMEM;
64 struct mthca_dev *mdev = to_mdev(ibdev);
65
66 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 if (err)
81 goto out;
82
83 props->device_cap_flags = mdev->device_cap_flags;
84 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
85 0xffffff;
86 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
87 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
88 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
89
90 props->max_mr_size = ~0ull;
91 props->page_size_cap = mdev->limits.page_size_cap;
92 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
93 props->max_qp_wr = mdev->limits.max_wqes;
94 props->max_sge = mdev->limits.max_sg;
95 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
96 props->max_cqe = mdev->limits.max_cqes;
97 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
98 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
99 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
100 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
101 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
102 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
103 props->max_srq_wr = mdev->limits.max_srq_wqes;
104 props->max_srq_sge = mdev->limits.max_srq_sge;
105 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
106 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
107 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
108 props->max_pkeys = mdev->limits.pkey_table_len;
109 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
110 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
111 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
112 props->max_mcast_grp;
113 /*
114 * If Sinai memory key optimization is being used, then only
115 * the 8-bit key portion will change. For other HCAs, the
116 * unused index bits will also be used for FMR remapping.
117 */
118 if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
119 props->max_map_per_fmr = 255;
120 else
121 props->max_map_per_fmr =
122 (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
123
124 err = 0;
125 out:
126 kfree(in_mad);
127 kfree(out_mad);
128 return err;
129}
130
131static int mthca_query_port(struct ib_device *ibdev,
132 u8 port, struct ib_port_attr *props)
133{
134 struct ib_smp *in_mad = NULL;
135 struct ib_smp *out_mad = NULL;
136 int err = -ENOMEM;
137
138 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
139 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
140 if (!in_mad || !out_mad)
141 goto out;
142
143 memset(props, 0, sizeof *props);
144
145 init_query_mad(in_mad);
146 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
147 in_mad->attr_mod = cpu_to_be32(port);
148
149 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
150 port, NULL, NULL, in_mad, out_mad);
151 if (err)
152 goto out;
153
154 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
155 props->lmc = out_mad->data[34] & 0x7;
156 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
157 props->sm_sl = out_mad->data[36] & 0xf;
158 props->state = out_mad->data[32] & 0xf;
159 props->phys_state = out_mad->data[33] >> 4;
160 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
161 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
162 props->max_msg_sz = 0x80000000;
163 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
164 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
165 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
166 props->active_width = out_mad->data[31] & 0xf;
167 props->active_speed = out_mad->data[35] >> 4;
168 props->max_mtu = out_mad->data[41] & 0xf;
169 props->active_mtu = out_mad->data[36] >> 4;
170 props->subnet_timeout = out_mad->data[51] & 0x1f;
171 props->max_vl_num = out_mad->data[37] >> 4;
172 props->init_type_reply = out_mad->data[41] >> 4;
173
174 out:
175 kfree(in_mad);
176 kfree(out_mad);
177 return err;
178}
179
180static int mthca_modify_device(struct ib_device *ibdev,
181 int mask,
182 struct ib_device_modify *props)
183{
184 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
185 return -EOPNOTSUPP;
186
187 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
188 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
189 return -ERESTARTSYS;
190 memcpy(ibdev->node_desc, props->node_desc, 64);
191 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
192 }
193
194 return 0;
195}
196
197static int mthca_modify_port(struct ib_device *ibdev,
198 u8 port, int port_modify_mask,
199 struct ib_port_modify *props)
200{
201 struct mthca_set_ib_param set_ib;
202 struct ib_port_attr attr;
203 int err;
204
205 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
206 return -ERESTARTSYS;
207
208 err = mthca_query_port(ibdev, port, &attr);
209 if (err)
210 goto out;
211
212 set_ib.set_si_guid = 0;
213 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
214
215 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
216 ~props->clr_port_cap_mask;
217
218 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
219 if (err)
220 goto out;
221out:
222 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
223 return err;
224}
225
226static int mthca_query_pkey(struct ib_device *ibdev,
227 u8 port, u16 index, u16 *pkey)
228{
229 struct ib_smp *in_mad = NULL;
230 struct ib_smp *out_mad = NULL;
231 int err = -ENOMEM;
232
233 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
234 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
235 if (!in_mad || !out_mad)
236 goto out;
237
238 init_query_mad(in_mad);
239 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
240 in_mad->attr_mod = cpu_to_be32(index / 32);
241
242 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
243 port, NULL, NULL, in_mad, out_mad);
244 if (err)
245 goto out;
246
247 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
248
249 out:
250 kfree(in_mad);
251 kfree(out_mad);
252 return err;
253}
254
255static int mthca_query_gid(struct ib_device *ibdev, u8 port,
256 int index, union ib_gid *gid)
257{
258 struct ib_smp *in_mad = NULL;
259 struct ib_smp *out_mad = NULL;
260 int err = -ENOMEM;
261
262 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
263 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
264 if (!in_mad || !out_mad)
265 goto out;
266
267 init_query_mad(in_mad);
268 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
269 in_mad->attr_mod = cpu_to_be32(port);
270
271 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
272 port, NULL, NULL, in_mad, out_mad);
273 if (err)
274 goto out;
275
276 memcpy(gid->raw, out_mad->data + 8, 8);
277
278 init_query_mad(in_mad);
279 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
280 in_mad->attr_mod = cpu_to_be32(index / 8);
281
282 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
283 port, NULL, NULL, in_mad, out_mad);
284 if (err)
285 goto out;
286
287 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
288
289 out:
290 kfree(in_mad);
291 kfree(out_mad);
292 return err;
293}
294
295static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
296 struct ib_udata *udata)
297{
298 struct mthca_alloc_ucontext_resp uresp;
299 struct mthca_ucontext *context;
300 int err;
301
302 if (!(to_mdev(ibdev)->active))
303 return ERR_PTR(-EAGAIN);
304
305 memset(&uresp, 0, sizeof uresp);
306
307 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
308 if (mthca_is_memfree(to_mdev(ibdev)))
309 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
310 else
311 uresp.uarc_size = 0;
312
313 context = kmalloc(sizeof *context, GFP_KERNEL);
314 if (!context)
315 return ERR_PTR(-ENOMEM);
316
317 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
318 if (err) {
319 kfree(context);
320 return ERR_PTR(err);
321 }
322
323 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
324 if (IS_ERR(context->db_tab)) {
325 err = PTR_ERR(context->db_tab);
326 mthca_uar_free(to_mdev(ibdev), &context->uar);
327 kfree(context);
328 return ERR_PTR(err);
329 }
330
331 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
332 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
333 mthca_uar_free(to_mdev(ibdev), &context->uar);
334 kfree(context);
335 return ERR_PTR(-EFAULT);
336 }
337
338 context->reg_mr_warned = 0;
339
340 return &context->ibucontext;
341}
342
343static int mthca_dealloc_ucontext(struct ib_ucontext *context)
344{
345 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
346 to_mucontext(context)->db_tab);
347 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
348 kfree(to_mucontext(context));
349
350 return 0;
351}
352
353static int mthca_mmap_uar(struct ib_ucontext *context,
354 struct vm_area_struct *vma)
355{
356 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
357 return -EINVAL;
358
359 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
360
361 if (io_remap_pfn_range(vma, vma->vm_start,
362 to_mucontext(context)->uar.pfn,
363 PAGE_SIZE, vma->vm_page_prot))
364 return -EAGAIN;
365
366 return 0;
367}
368
369static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
370 struct ib_ucontext *context,
371 struct ib_udata *udata)
372{
373 struct mthca_pd *pd;
374 int err;
375
376 pd = kmalloc(sizeof *pd, GFP_KERNEL);
377 if (!pd)
378 return ERR_PTR(-ENOMEM);
379
380 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
381 if (err) {
382 kfree(pd);
383 return ERR_PTR(err);
384 }
385
386 if (context) {
387 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
388 mthca_pd_free(to_mdev(ibdev), pd);
389 kfree(pd);
390 return ERR_PTR(-EFAULT);
391 }
392 }
393
394 return &pd->ibpd;
395}
396
397static int mthca_dealloc_pd(struct ib_pd *pd)
398{
399 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
400 kfree(pd);
401
402 return 0;
403}
404
405static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
406 struct ib_ah_attr *ah_attr)
407{
408 int err;
409 struct mthca_ah *ah;
410
411 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
412 if (!ah)
413 return ERR_PTR(-ENOMEM);
414
415 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
416 if (err) {
417 kfree(ah);
418 return ERR_PTR(err);
419 }
420
421 return &ah->ibah;
422}
423
424static int mthca_ah_destroy(struct ib_ah *ah)
425{
426 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
427 kfree(ah);
428
429 return 0;
430}
431
432static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
433 struct ib_srq_init_attr *init_attr,
434 struct ib_udata *udata)
435{
436 struct mthca_create_srq ucmd;
437 struct mthca_ucontext *context = NULL;
438 struct mthca_srq *srq;
439 int err;
440
441 srq = kmalloc(sizeof *srq, GFP_KERNEL);
442 if (!srq)
443 return ERR_PTR(-ENOMEM);
444
445 if (pd->uobject) {
446 context = to_mucontext(pd->uobject->context);
447
448 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
449 err = -EFAULT;
450 goto err_free;
451 }
452
453 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
454 context->db_tab, ucmd.db_index,
455 ucmd.db_page);
456
457 if (err)
458 goto err_free;
459
460 srq->mr.ibmr.lkey = ucmd.lkey;
461 srq->db_index = ucmd.db_index;
462 }
463
464 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
465 &init_attr->attr, srq);
466
467 if (err && pd->uobject)
468 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
469 context->db_tab, ucmd.db_index);
470
471 if (err)
472 goto err_free;
473
474 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
475 mthca_free_srq(to_mdev(pd->device), srq);
476 err = -EFAULT;
477 goto err_free;
478 }
479
480 return &srq->ibsrq;
481
482err_free:
483 kfree(srq);
484
485 return ERR_PTR(err);
486}
487
488static int mthca_destroy_srq(struct ib_srq *srq)
489{
490 struct mthca_ucontext *context;
491
492 if (srq->uobject) {
493 context = to_mucontext(srq->uobject->context);
494
495 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
496 context->db_tab, to_msrq(srq)->db_index);
497 }
498
499 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
500 kfree(srq);
501
502 return 0;
503}
504
505static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
506 struct ib_qp_init_attr *init_attr,
507 struct ib_udata *udata)
508{
509 struct mthca_create_qp ucmd;
510 struct mthca_qp *qp;
511 int err;
512
513 if (init_attr->create_flags)
514 return ERR_PTR(-EINVAL);
515
516 switch (init_attr->qp_type) {
517 case IB_QPT_RC:
518 case IB_QPT_UC:
519 case IB_QPT_UD:
520 {
521 struct mthca_ucontext *context;
522
523 qp = kmalloc(sizeof *qp, GFP_KERNEL);
524 if (!qp)
525 return ERR_PTR(-ENOMEM);
526
527 if (pd->uobject) {
528 context = to_mucontext(pd->uobject->context);
529
530 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
531 kfree(qp);
532 return ERR_PTR(-EFAULT);
533 }
534
535 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
536 context->db_tab,
537 ucmd.sq_db_index, ucmd.sq_db_page);
538 if (err) {
539 kfree(qp);
540 return ERR_PTR(err);
541 }
542
543 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
544 context->db_tab,
545 ucmd.rq_db_index, ucmd.rq_db_page);
546 if (err) {
547 mthca_unmap_user_db(to_mdev(pd->device),
548 &context->uar,
549 context->db_tab,
550 ucmd.sq_db_index);
551 kfree(qp);
552 return ERR_PTR(err);
553 }
554
555 qp->mr.ibmr.lkey = ucmd.lkey;
556 qp->sq.db_index = ucmd.sq_db_index;
557 qp->rq.db_index = ucmd.rq_db_index;
558 }
559
560 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
561 to_mcq(init_attr->send_cq),
562 to_mcq(init_attr->recv_cq),
563 init_attr->qp_type, init_attr->sq_sig_type,
564 &init_attr->cap, qp);
565
566 if (err && pd->uobject) {
567 context = to_mucontext(pd->uobject->context);
568
569 mthca_unmap_user_db(to_mdev(pd->device),
570 &context->uar,
571 context->db_tab,
572 ucmd.sq_db_index);
573 mthca_unmap_user_db(to_mdev(pd->device),
574 &context->uar,
575 context->db_tab,
576 ucmd.rq_db_index);
577 }
578
579 qp->ibqp.qp_num = qp->qpn;
580 break;
581 }
582 case IB_QPT_SMI:
583 case IB_QPT_GSI:
584 {
585 /* Don't allow userspace to create special QPs */
586 if (pd->uobject)
587 return ERR_PTR(-EINVAL);
588
589 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
590 if (!qp)
591 return ERR_PTR(-ENOMEM);
592
593 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
594
595 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
596 to_mcq(init_attr->send_cq),
597 to_mcq(init_attr->recv_cq),
598 init_attr->sq_sig_type, &init_attr->cap,
599 qp->ibqp.qp_num, init_attr->port_num,
600 to_msqp(qp));
601 break;
602 }
603 default:
604 /* Don't support raw QPs */
605 return ERR_PTR(-ENOSYS);
606 }
607
608 if (err) {
609 kfree(qp);
610 return ERR_PTR(err);
611 }
612
613 init_attr->cap.max_send_wr = qp->sq.max;
614 init_attr->cap.max_recv_wr = qp->rq.max;
615 init_attr->cap.max_send_sge = qp->sq.max_gs;
616 init_attr->cap.max_recv_sge = qp->rq.max_gs;
617 init_attr->cap.max_inline_data = qp->max_inline_data;
618
619 return &qp->ibqp;
620}
621
622static int mthca_destroy_qp(struct ib_qp *qp)
623{
624 if (qp->uobject) {
625 mthca_unmap_user_db(to_mdev(qp->device),
626 &to_mucontext(qp->uobject->context)->uar,
627 to_mucontext(qp->uobject->context)->db_tab,
628 to_mqp(qp)->sq.db_index);
629 mthca_unmap_user_db(to_mdev(qp->device),
630 &to_mucontext(qp->uobject->context)->uar,
631 to_mucontext(qp->uobject->context)->db_tab,
632 to_mqp(qp)->rq.db_index);
633 }
634 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
635 kfree(qp);
636 return 0;
637}
638
639static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
640 int comp_vector,
641 struct ib_ucontext *context,
642 struct ib_udata *udata)
643{
644 struct mthca_create_cq ucmd;
645 struct mthca_cq *cq;
646 int nent;
647 int err;
648
649 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
650 return ERR_PTR(-EINVAL);
651
652 if (context) {
653 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
654 return ERR_PTR(-EFAULT);
655
656 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
657 to_mucontext(context)->db_tab,
658 ucmd.set_db_index, ucmd.set_db_page);
659 if (err)
660 return ERR_PTR(err);
661
662 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
663 to_mucontext(context)->db_tab,
664 ucmd.arm_db_index, ucmd.arm_db_page);
665 if (err)
666 goto err_unmap_set;
667 }
668
669 cq = kmalloc(sizeof *cq, GFP_KERNEL);
670 if (!cq) {
671 err = -ENOMEM;
672 goto err_unmap_arm;
673 }
674
675 if (context) {
676 cq->buf.mr.ibmr.lkey = ucmd.lkey;
677 cq->set_ci_db_index = ucmd.set_db_index;
678 cq->arm_db_index = ucmd.arm_db_index;
679 }
680
681 for (nent = 1; nent <= entries; nent <<= 1)
682 ; /* nothing */
683
684 err = mthca_init_cq(to_mdev(ibdev), nent,
685 context ? to_mucontext(context) : NULL,
686 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
687 cq);
688 if (err)
689 goto err_free;
690
691 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
692 mthca_free_cq(to_mdev(ibdev), cq);
693 goto err_free;
694 }
695
696 cq->resize_buf = NULL;
697
698 return &cq->ibcq;
699
700err_free:
701 kfree(cq);
702
703err_unmap_arm:
704 if (context)
705 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
706 to_mucontext(context)->db_tab, ucmd.arm_db_index);
707
708err_unmap_set:
709 if (context)
710 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
711 to_mucontext(context)->db_tab, ucmd.set_db_index);
712
713 return ERR_PTR(err);
714}
715
716static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
717 int entries)
718{
719 int ret;
720
721 spin_lock_irq(&cq->lock);
722 if (cq->resize_buf) {
723 ret = -EBUSY;
724 goto unlock;
725 }
726
727 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
728 if (!cq->resize_buf) {
729 ret = -ENOMEM;
730 goto unlock;
731 }
732
733 cq->resize_buf->state = CQ_RESIZE_ALLOC;
734
735 ret = 0;
736
737unlock:
738 spin_unlock_irq(&cq->lock);
739
740 if (ret)
741 return ret;
742
743 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
744 if (ret) {
745 spin_lock_irq(&cq->lock);
746 kfree(cq->resize_buf);
747 cq->resize_buf = NULL;
748 spin_unlock_irq(&cq->lock);
749 return ret;
750 }
751
752 cq->resize_buf->cqe = entries - 1;
753
754 spin_lock_irq(&cq->lock);
755 cq->resize_buf->state = CQ_RESIZE_READY;
756 spin_unlock_irq(&cq->lock);
757
758 return 0;
759}
760
761static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
762{
763 struct mthca_dev *dev = to_mdev(ibcq->device);
764 struct mthca_cq *cq = to_mcq(ibcq);
765 struct mthca_resize_cq ucmd;
766 u32 lkey;
767 int ret;
768
769 if (entries < 1 || entries > dev->limits.max_cqes)
770 return -EINVAL;
771
772 mutex_lock(&cq->mutex);
773
774 entries = roundup_pow_of_two(entries + 1);
775 if (entries == ibcq->cqe + 1) {
776 ret = 0;
777 goto out;
778 }
779
780 if (cq->is_kernel) {
781 ret = mthca_alloc_resize_buf(dev, cq, entries);
782 if (ret)
783 goto out;
784 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
785 } else {
786 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
787 ret = -EFAULT;
788 goto out;
789 }
790 lkey = ucmd.lkey;
791 }
792
793 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
794
795 if (ret) {
796 if (cq->resize_buf) {
797 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
798 cq->resize_buf->cqe);
799 kfree(cq->resize_buf);
800 spin_lock_irq(&cq->lock);
801 cq->resize_buf = NULL;
802 spin_unlock_irq(&cq->lock);
803 }
804 goto out;
805 }
806
807 if (cq->is_kernel) {
808 struct mthca_cq_buf tbuf;
809 int tcqe;
810
811 spin_lock_irq(&cq->lock);
812 if (cq->resize_buf->state == CQ_RESIZE_READY) {
813 mthca_cq_resize_copy_cqes(cq);
814 tbuf = cq->buf;
815 tcqe = cq->ibcq.cqe;
816 cq->buf = cq->resize_buf->buf;
817 cq->ibcq.cqe = cq->resize_buf->cqe;
818 } else {
819 tbuf = cq->resize_buf->buf;
820 tcqe = cq->resize_buf->cqe;
821 }
822
823 kfree(cq->resize_buf);
824 cq->resize_buf = NULL;
825 spin_unlock_irq(&cq->lock);
826
827 mthca_free_cq_buf(dev, &tbuf, tcqe);
828 } else
829 ibcq->cqe = entries - 1;
830
831out:
832 mutex_unlock(&cq->mutex);
833
834 return ret;
835}
836
837static int mthca_destroy_cq(struct ib_cq *cq)
838{
839 if (cq->uobject) {
840 mthca_unmap_user_db(to_mdev(cq->device),
841 &to_mucontext(cq->uobject->context)->uar,
842 to_mucontext(cq->uobject->context)->db_tab,
843 to_mcq(cq)->arm_db_index);
844 mthca_unmap_user_db(to_mdev(cq->device),
845 &to_mucontext(cq->uobject->context)->uar,
846 to_mucontext(cq->uobject->context)->db_tab,
847 to_mcq(cq)->set_ci_db_index);
848 }
849 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
850 kfree(cq);
851
852 return 0;
853}
854
855static inline u32 convert_access(int acc)
856{
857 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
858 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
859 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
860 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
861 MTHCA_MPT_FLAG_LOCAL_READ;
862}
863
864static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
865{
866 struct mthca_mr *mr;
867 int err;
868
869 mr = kmalloc(sizeof *mr, GFP_KERNEL);
870 if (!mr)
871 return ERR_PTR(-ENOMEM);
872
873 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
874 to_mpd(pd)->pd_num,
875 convert_access(acc), mr);
876
877 if (err) {
878 kfree(mr);
879 return ERR_PTR(err);
880 }
881
882 mr->umem = NULL;
883
884 return &mr->ibmr;
885}
886
887static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
888 struct ib_phys_buf *buffer_list,
889 int num_phys_buf,
890 int acc,
891 u64 *iova_start)
892{
893 struct mthca_mr *mr;
894 u64 *page_list;
895 u64 total_size;
896 unsigned long mask;
897 int shift;
898 int npages;
899 int err;
900 int i, j, n;
901
902 mask = buffer_list[0].addr ^ *iova_start;
903 total_size = 0;
904 for (i = 0; i < num_phys_buf; ++i) {
905 if (i != 0)
906 mask |= buffer_list[i].addr;
907 if (i != num_phys_buf - 1)
908 mask |= buffer_list[i].addr + buffer_list[i].size;
909
910 total_size += buffer_list[i].size;
911 }
912
913 if (mask & ~PAGE_MASK)
914 return ERR_PTR(-EINVAL);
915
916 shift = __ffs(mask | 1 << 31);
917
918 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
919 buffer_list[0].addr &= ~0ull << shift;
920
921 mr = kmalloc(sizeof *mr, GFP_KERNEL);
922 if (!mr)
923 return ERR_PTR(-ENOMEM);
924
925 npages = 0;
926 for (i = 0; i < num_phys_buf; ++i)
927 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
928
929 if (!npages)
930 return &mr->ibmr;
931
932 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
933 if (!page_list) {
934 kfree(mr);
935 return ERR_PTR(-ENOMEM);
936 }
937
938 n = 0;
939 for (i = 0; i < num_phys_buf; ++i)
940 for (j = 0;
941 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
942 ++j)
943 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
944
945 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
946 "in PD %x; shift %d, npages %d.\n",
947 (unsigned long long) buffer_list[0].addr,
948 (unsigned long long) *iova_start,
949 to_mpd(pd)->pd_num,
950 shift, npages);
951
952 err = mthca_mr_alloc_phys(to_mdev(pd->device),
953 to_mpd(pd)->pd_num,
954 page_list, shift, npages,
955 *iova_start, total_size,
956 convert_access(acc), mr);
957
958 if (err) {
959 kfree(page_list);
960 kfree(mr);
961 return ERR_PTR(err);
962 }
963
964 kfree(page_list);
965 mr->umem = NULL;
966
967 return &mr->ibmr;
968}
969
970static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
971 u64 virt, int acc, struct ib_udata *udata)
972{
973 struct mthca_dev *dev = to_mdev(pd->device);
974 struct ib_umem_chunk *chunk;
975 struct mthca_mr *mr;
976 struct mthca_reg_mr ucmd;
977 u64 *pages;
978 int shift, n, len;
979 int i, j, k;
980 int err = 0;
981 int write_mtt_size;
982
983 if (udata->inlen - sizeof (struct ib_uverbs_cmd_hdr) < sizeof ucmd) {
984 if (!to_mucontext(pd->uobject->context)->reg_mr_warned) {
985 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
986 current->comm);
987 mthca_warn(dev, " Update libmthca to fix this.\n");
988 }
989 ++to_mucontext(pd->uobject->context)->reg_mr_warned;
990 ucmd.mr_attrs = 0;
991 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
992 return ERR_PTR(-EFAULT);
993
994 mr = kmalloc(sizeof *mr, GFP_KERNEL);
995 if (!mr)
996 return ERR_PTR(-ENOMEM);
997
998 mr->umem = ib_umem_get(pd->uobject->context, start, length, acc,
999 ucmd.mr_attrs & MTHCA_MR_DMASYNC);
1000
1001 if (IS_ERR(mr->umem)) {
1002 err = PTR_ERR(mr->umem);
1003 goto err;
1004 }
1005
1006 shift = ffs(mr->umem->page_size) - 1;
1007
1008 n = 0;
1009 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1010 n += chunk->nents;
1011
1012 mr->mtt = mthca_alloc_mtt(dev, n);
1013 if (IS_ERR(mr->mtt)) {
1014 err = PTR_ERR(mr->mtt);
1015 goto err_umem;
1016 }
1017
1018 pages = (u64 *) __get_free_page(GFP_KERNEL);
1019 if (!pages) {
1020 err = -ENOMEM;
1021 goto err_mtt;
1022 }
1023
1024 i = n = 0;
1025
1026 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
1027
1028 list_for_each_entry(chunk, &mr->umem->chunk_list, list)
1029 for (j = 0; j < chunk->nmap; ++j) {
1030 len = sg_dma_len(&chunk->page_list[j]) >> shift;
1031 for (k = 0; k < len; ++k) {
1032 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
1033 mr->umem->page_size * k;
1034 /*
1035 * Be friendly to write_mtt and pass it chunks
1036 * of appropriate size.
1037 */
1038 if (i == write_mtt_size) {
1039 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1040 if (err)
1041 goto mtt_done;
1042 n += i;
1043 i = 0;
1044 }
1045 }
1046 }
1047
1048 if (i)
1049 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
1050mtt_done:
1051 free_page((unsigned long) pages);
1052 if (err)
1053 goto err_mtt;
1054
1055 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
1056 convert_access(acc), mr);
1057
1058 if (err)
1059 goto err_mtt;
1060
1061 return &mr->ibmr;
1062
1063err_mtt:
1064 mthca_free_mtt(dev, mr->mtt);
1065
1066err_umem:
1067 ib_umem_release(mr->umem);
1068
1069err:
1070 kfree(mr);
1071 return ERR_PTR(err);
1072}
1073
1074static int mthca_dereg_mr(struct ib_mr *mr)
1075{
1076 struct mthca_mr *mmr = to_mmr(mr);
1077
1078 mthca_free_mr(to_mdev(mr->device), mmr);
1079 if (mmr->umem)
1080 ib_umem_release(mmr->umem);
1081 kfree(mmr);
1082
1083 return 0;
1084}
1085
1086static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
1087 struct ib_fmr_attr *fmr_attr)
1088{
1089 struct mthca_fmr *fmr;
1090 int err;
1091
1092 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
1093 if (!fmr)
1094 return ERR_PTR(-ENOMEM);
1095
1096 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
1097 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
1098 convert_access(mr_access_flags), fmr);
1099
1100 if (err) {
1101 kfree(fmr);
1102 return ERR_PTR(err);
1103 }
1104
1105 return &fmr->ibmr;
1106}
1107
1108static int mthca_dealloc_fmr(struct ib_fmr *fmr)
1109{
1110 struct mthca_fmr *mfmr = to_mfmr(fmr);
1111 int err;
1112
1113 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
1114 if (err)
1115 return err;
1116
1117 kfree(mfmr);
1118 return 0;
1119}
1120
1121static int mthca_unmap_fmr(struct list_head *fmr_list)
1122{
1123 struct ib_fmr *fmr;
1124 int err;
1125 struct mthca_dev *mdev = NULL;
1126
1127 list_for_each_entry(fmr, fmr_list, list) {
1128 if (mdev && to_mdev(fmr->device) != mdev)
1129 return -EINVAL;
1130 mdev = to_mdev(fmr->device);
1131 }
1132
1133 if (!mdev)
1134 return 0;
1135
1136 if (mthca_is_memfree(mdev)) {
1137 list_for_each_entry(fmr, fmr_list, list)
1138 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1139
1140 wmb();
1141 } else
1142 list_for_each_entry(fmr, fmr_list, list)
1143 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1144
1145 err = mthca_SYNC_TPT(mdev);
1146 return err;
1147}
1148
1149static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1150 char *buf)
1151{
1152 struct mthca_dev *dev =
1153 container_of(device, struct mthca_dev, ib_dev.dev);
1154 return sprintf(buf, "%x\n", dev->rev_id);
1155}
1156
1157static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1158 char *buf)
1159{
1160 struct mthca_dev *dev =
1161 container_of(device, struct mthca_dev, ib_dev.dev);
1162 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1163 (int) (dev->fw_ver >> 16) & 0xffff,
1164 (int) dev->fw_ver & 0xffff);
1165}
1166
1167static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1168 char *buf)
1169{
1170 struct mthca_dev *dev =
1171 container_of(device, struct mthca_dev, ib_dev.dev);
1172 switch (dev->pdev->device) {
1173 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1174 return sprintf(buf, "MT23108\n");
1175 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1176 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1177 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1178 return sprintf(buf, "MT25208\n");
1179 case PCI_DEVICE_ID_MELLANOX_SINAI:
1180 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1181 return sprintf(buf, "MT25204\n");
1182 default:
1183 return sprintf(buf, "unknown\n");
1184 }
1185}
1186
1187static ssize_t show_board(struct device *device, struct device_attribute *attr,
1188 char *buf)
1189{
1190 struct mthca_dev *dev =
1191 container_of(device, struct mthca_dev, ib_dev.dev);
1192 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1193}
1194
1195static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1196static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1197static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1198static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1199
1200static struct device_attribute *mthca_dev_attributes[] = {
1201 &dev_attr_hw_rev,
1202 &dev_attr_fw_ver,
1203 &dev_attr_hca_type,
1204 &dev_attr_board_id
1205};
1206
1207static int mthca_init_node_data(struct mthca_dev *dev)
1208{
1209 struct ib_smp *in_mad = NULL;
1210 struct ib_smp *out_mad = NULL;
1211 int err = -ENOMEM;
1212
1213 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1214 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1215 if (!in_mad || !out_mad)
1216 goto out;
1217
1218 init_query_mad(in_mad);
1219 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1220
1221 err = mthca_MAD_IFC(dev, 1, 1,
1222 1, NULL, NULL, in_mad, out_mad);
1223 if (err)
1224 goto out;
1225
1226 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1227
1228 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1229
1230 err = mthca_MAD_IFC(dev, 1, 1,
1231 1, NULL, NULL, in_mad, out_mad);
1232 if (err)
1233 goto out;
1234
1235 if (mthca_is_memfree(dev))
1236 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1237 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1238
1239out:
1240 kfree(in_mad);
1241 kfree(out_mad);
1242 return err;
1243}
1244
1245int mthca_register_device(struct mthca_dev *dev)
1246{
1247 int ret;
1248 int i;
1249
1250 ret = mthca_init_node_data(dev);
1251 if (ret)
1252 return ret;
1253
1254 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1255 dev->ib_dev.owner = THIS_MODULE;
1256
1257 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
1258 dev->ib_dev.uverbs_cmd_mask =
1259 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1260 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1261 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1262 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1263 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1264 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1265 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1266 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1267 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1268 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1269 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1270 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1271 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1272 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1273 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1274 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1275 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1276 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1277 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1278 dev->ib_dev.num_comp_vectors = 1;
1279 dev->ib_dev.dma_device = &dev->pdev->dev;
1280 dev->ib_dev.query_device = mthca_query_device;
1281 dev->ib_dev.query_port = mthca_query_port;
1282 dev->ib_dev.modify_device = mthca_modify_device;
1283 dev->ib_dev.modify_port = mthca_modify_port;
1284 dev->ib_dev.query_pkey = mthca_query_pkey;
1285 dev->ib_dev.query_gid = mthca_query_gid;
1286 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1287 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
1288 dev->ib_dev.mmap = mthca_mmap_uar;
1289 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1290 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1291 dev->ib_dev.create_ah = mthca_ah_create;
1292 dev->ib_dev.query_ah = mthca_ah_query;
1293 dev->ib_dev.destroy_ah = mthca_ah_destroy;
1294
1295 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1296 dev->ib_dev.create_srq = mthca_create_srq;
1297 dev->ib_dev.modify_srq = mthca_modify_srq;
1298 dev->ib_dev.query_srq = mthca_query_srq;
1299 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1300 dev->ib_dev.uverbs_cmd_mask |=
1301 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1302 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1303 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1304 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1305
1306 if (mthca_is_memfree(dev))
1307 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1308 else
1309 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1310 }
1311
1312 dev->ib_dev.create_qp = mthca_create_qp;
1313 dev->ib_dev.modify_qp = mthca_modify_qp;
1314 dev->ib_dev.query_qp = mthca_query_qp;
1315 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1316 dev->ib_dev.create_cq = mthca_create_cq;
1317 dev->ib_dev.resize_cq = mthca_resize_cq;
1318 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1319 dev->ib_dev.poll_cq = mthca_poll_cq;
1320 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1321 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
1322 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1323 dev->ib_dev.dereg_mr = mthca_dereg_mr;
1324
1325 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1326 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1327 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1328 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
1329 if (mthca_is_memfree(dev))
1330 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1331 else
1332 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1333 }
1334
1335 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1336 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1337 dev->ib_dev.process_mad = mthca_process_mad;
1338
1339 if (mthca_is_memfree(dev)) {
1340 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1341 dev->ib_dev.post_send = mthca_arbel_post_send;
1342 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1343 } else {
1344 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1345 dev->ib_dev.post_send = mthca_tavor_post_send;
1346 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1347 }
1348
1349 mutex_init(&dev->cap_mask_mutex);
1350
1351 ret = ib_register_device(&dev->ib_dev, NULL);
1352 if (ret)
1353 return ret;
1354
1355 for (i = 0; i < ARRAY_SIZE(mthca_dev_attributes); ++i) {
1356 ret = device_create_file(&dev->ib_dev.dev,
1357 mthca_dev_attributes[i]);
1358 if (ret) {
1359 ib_unregister_device(&dev->ib_dev);
1360 return ret;
1361 }
1362 }
1363
1364 mthca_start_catas_poll(dev);
1365
1366 return 0;
1367}
1368
1369void mthca_unregister_device(struct mthca_dev *dev)
1370{
1371 mthca_stop_catas_poll(dev);
1372 ib_unregister_device(&dev->ib_dev);
1373}
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37#include <rdma/ib_smi.h>
38#include <rdma/ib_umem.h>
39#include <rdma/ib_user_verbs.h>
40#include <rdma/uverbs_ioctl.h>
41
42#include <linux/sched.h>
43#include <linux/slab.h>
44#include <linux/stat.h>
45#include <linux/mm.h>
46#include <linux/export.h>
47
48#include "mthca_dev.h"
49#include "mthca_cmd.h"
50#include <rdma/mthca-abi.h>
51#include "mthca_memfree.h"
52
53static void init_query_mad(struct ib_smp *mad)
54{
55 mad->base_version = 1;
56 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
57 mad->class_version = 1;
58 mad->method = IB_MGMT_METHOD_GET;
59}
60
61static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
62 struct ib_udata *uhw)
63{
64 struct ib_smp *in_mad = NULL;
65 struct ib_smp *out_mad = NULL;
66 int err = -ENOMEM;
67 struct mthca_dev *mdev = to_mdev(ibdev);
68
69 if (uhw->inlen || uhw->outlen)
70 return -EINVAL;
71
72 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
73 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
74 if (!in_mad || !out_mad)
75 goto out;
76
77 memset(props, 0, sizeof *props);
78
79 props->fw_ver = mdev->fw_ver;
80
81 init_query_mad(in_mad);
82 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
83
84 err = mthca_MAD_IFC(mdev, 1, 1,
85 1, NULL, NULL, in_mad, out_mad);
86 if (err)
87 goto out;
88
89 props->device_cap_flags = mdev->device_cap_flags;
90 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
91 0xffffff;
92 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
93 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
94 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
95
96 props->max_mr_size = ~0ull;
97 props->page_size_cap = mdev->limits.page_size_cap;
98 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
99 props->max_qp_wr = mdev->limits.max_wqes;
100 props->max_send_sge = mdev->limits.max_sg;
101 props->max_recv_sge = mdev->limits.max_sg;
102 props->max_sge_rd = 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 err = 0;
123 out:
124 kfree(in_mad);
125 kfree(out_mad);
126 return err;
127}
128
129static int mthca_query_port(struct ib_device *ibdev,
130 u8 port, struct ib_port_attr *props)
131{
132 struct ib_smp *in_mad = NULL;
133 struct ib_smp *out_mad = NULL;
134 int err = -ENOMEM;
135
136 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
137 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
138 if (!in_mad || !out_mad)
139 goto out;
140
141 /* props being zeroed by the caller, avoid zeroing it here */
142
143 init_query_mad(in_mad);
144 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
145 in_mad->attr_mod = cpu_to_be32(port);
146
147 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
148 port, NULL, NULL, in_mad, out_mad);
149 if (err)
150 goto out;
151
152 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
153 props->lmc = out_mad->data[34] & 0x7;
154 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
155 props->sm_sl = out_mad->data[36] & 0xf;
156 props->state = out_mad->data[32] & 0xf;
157 props->phys_state = out_mad->data[33] >> 4;
158 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
159 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
160 props->max_msg_sz = 0x80000000;
161 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
162 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
163 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
164 props->active_width = out_mad->data[31] & 0xf;
165 props->active_speed = out_mad->data[35] >> 4;
166 props->max_mtu = out_mad->data[41] & 0xf;
167 props->active_mtu = out_mad->data[36] >> 4;
168 props->subnet_timeout = out_mad->data[51] & 0x1f;
169 props->max_vl_num = out_mad->data[37] >> 4;
170 props->init_type_reply = out_mad->data[41] >> 4;
171
172 out:
173 kfree(in_mad);
174 kfree(out_mad);
175 return err;
176}
177
178static int mthca_modify_device(struct ib_device *ibdev,
179 int mask,
180 struct ib_device_modify *props)
181{
182 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
183 return -EOPNOTSUPP;
184
185 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
186 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
187 return -ERESTARTSYS;
188 memcpy(ibdev->node_desc, props->node_desc,
189 IB_DEVICE_NODE_DESC_MAX);
190 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
191 }
192
193 return 0;
194}
195
196static int mthca_modify_port(struct ib_device *ibdev,
197 u8 port, int port_modify_mask,
198 struct ib_port_modify *props)
199{
200 struct mthca_set_ib_param set_ib;
201 struct ib_port_attr attr;
202 int err;
203
204 if (mutex_lock_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
205 return -ERESTARTSYS;
206
207 err = ib_query_port(ibdev, port, &attr);
208 if (err)
209 goto out;
210
211 set_ib.set_si_guid = 0;
212 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
213
214 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
215 ~props->clr_port_cap_mask;
216
217 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port);
218 if (err)
219 goto out;
220out:
221 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
222 return err;
223}
224
225static int mthca_query_pkey(struct ib_device *ibdev,
226 u8 port, u16 index, u16 *pkey)
227{
228 struct ib_smp *in_mad = NULL;
229 struct ib_smp *out_mad = NULL;
230 int err = -ENOMEM;
231
232 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
233 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
234 if (!in_mad || !out_mad)
235 goto out;
236
237 init_query_mad(in_mad);
238 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
239 in_mad->attr_mod = cpu_to_be32(index / 32);
240
241 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
242 port, NULL, NULL, in_mad, out_mad);
243 if (err)
244 goto out;
245
246 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
247
248 out:
249 kfree(in_mad);
250 kfree(out_mad);
251 return err;
252}
253
254static int mthca_query_gid(struct ib_device *ibdev, u8 port,
255 int index, union ib_gid *gid)
256{
257 struct ib_smp *in_mad = NULL;
258 struct ib_smp *out_mad = NULL;
259 int err = -ENOMEM;
260
261 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
262 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
263 if (!in_mad || !out_mad)
264 goto out;
265
266 init_query_mad(in_mad);
267 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
268 in_mad->attr_mod = cpu_to_be32(port);
269
270 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
271 port, NULL, NULL, in_mad, out_mad);
272 if (err)
273 goto out;
274
275 memcpy(gid->raw, out_mad->data + 8, 8);
276
277 init_query_mad(in_mad);
278 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
279 in_mad->attr_mod = cpu_to_be32(index / 8);
280
281 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
282 port, NULL, NULL, in_mad, out_mad);
283 if (err)
284 goto out;
285
286 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
287
288 out:
289 kfree(in_mad);
290 kfree(out_mad);
291 return err;
292}
293
294static int mthca_alloc_ucontext(struct ib_ucontext *uctx,
295 struct ib_udata *udata)
296{
297 struct ib_device *ibdev = uctx->device;
298 struct mthca_alloc_ucontext_resp uresp = {};
299 struct mthca_ucontext *context = to_mucontext(uctx);
300 int err;
301
302 if (!(to_mdev(ibdev)->active))
303 return -EAGAIN;
304
305 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
306 if (mthca_is_memfree(to_mdev(ibdev)))
307 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
308 else
309 uresp.uarc_size = 0;
310
311 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
312 if (err)
313 return err;
314
315 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
316 if (IS_ERR(context->db_tab)) {
317 err = PTR_ERR(context->db_tab);
318 mthca_uar_free(to_mdev(ibdev), &context->uar);
319 return err;
320 }
321
322 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
323 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
324 mthca_uar_free(to_mdev(ibdev), &context->uar);
325 return -EFAULT;
326 }
327
328 context->reg_mr_warned = 0;
329
330 return 0;
331}
332
333static void mthca_dealloc_ucontext(struct ib_ucontext *context)
334{
335 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
336 to_mucontext(context)->db_tab);
337 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
338}
339
340static int mthca_mmap_uar(struct ib_ucontext *context,
341 struct vm_area_struct *vma)
342{
343 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
344 return -EINVAL;
345
346 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
347
348 if (io_remap_pfn_range(vma, vma->vm_start,
349 to_mucontext(context)->uar.pfn,
350 PAGE_SIZE, vma->vm_page_prot))
351 return -EAGAIN;
352
353 return 0;
354}
355
356static int mthca_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
357{
358 struct ib_device *ibdev = ibpd->device;
359 struct mthca_pd *pd = to_mpd(ibpd);
360 int err;
361
362 err = mthca_pd_alloc(to_mdev(ibdev), !udata, pd);
363 if (err)
364 return err;
365
366 if (udata) {
367 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
368 mthca_pd_free(to_mdev(ibdev), pd);
369 return -EFAULT;
370 }
371 }
372
373 return 0;
374}
375
376static void mthca_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
377{
378 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
379}
380
381static int mthca_ah_create(struct ib_ah *ibah,
382 struct rdma_ah_init_attr *init_attr,
383 struct ib_udata *udata)
384
385{
386 struct mthca_ah *ah = to_mah(ibah);
387
388 return mthca_create_ah(to_mdev(ibah->device), to_mpd(ibah->pd),
389 init_attr->ah_attr, ah);
390}
391
392static void mthca_ah_destroy(struct ib_ah *ah, u32 flags)
393{
394 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
395}
396
397static int mthca_create_srq(struct ib_srq *ibsrq,
398 struct ib_srq_init_attr *init_attr,
399 struct ib_udata *udata)
400{
401 struct mthca_create_srq ucmd;
402 struct mthca_ucontext *context = rdma_udata_to_drv_context(
403 udata, struct mthca_ucontext, ibucontext);
404 struct mthca_srq *srq = to_msrq(ibsrq);
405 int err;
406
407 if (init_attr->srq_type != IB_SRQT_BASIC)
408 return -EOPNOTSUPP;
409
410 if (udata) {
411 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
412 return -EFAULT;
413
414 err = mthca_map_user_db(to_mdev(ibsrq->device), &context->uar,
415 context->db_tab, ucmd.db_index,
416 ucmd.db_page);
417
418 if (err)
419 return err;
420
421 srq->mr.ibmr.lkey = ucmd.lkey;
422 srq->db_index = ucmd.db_index;
423 }
424
425 err = mthca_alloc_srq(to_mdev(ibsrq->device), to_mpd(ibsrq->pd),
426 &init_attr->attr, srq, udata);
427
428 if (err && udata)
429 mthca_unmap_user_db(to_mdev(ibsrq->device), &context->uar,
430 context->db_tab, ucmd.db_index);
431
432 if (err)
433 return err;
434
435 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof(__u32))) {
436 mthca_free_srq(to_mdev(ibsrq->device), srq);
437 return -EFAULT;
438 }
439
440 return 0;
441}
442
443static void mthca_destroy_srq(struct ib_srq *srq, struct ib_udata *udata)
444{
445 if (udata) {
446 struct mthca_ucontext *context =
447 rdma_udata_to_drv_context(
448 udata,
449 struct mthca_ucontext,
450 ibucontext);
451
452 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
453 context->db_tab, to_msrq(srq)->db_index);
454 }
455
456 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
457}
458
459static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
460 struct ib_qp_init_attr *init_attr,
461 struct ib_udata *udata)
462{
463 struct mthca_ucontext *context = rdma_udata_to_drv_context(
464 udata, struct mthca_ucontext, ibucontext);
465 struct mthca_create_qp ucmd;
466 struct mthca_qp *qp;
467 int err;
468
469 if (init_attr->create_flags)
470 return ERR_PTR(-EINVAL);
471
472 switch (init_attr->qp_type) {
473 case IB_QPT_RC:
474 case IB_QPT_UC:
475 case IB_QPT_UD:
476 {
477 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
478 if (!qp)
479 return ERR_PTR(-ENOMEM);
480
481 if (udata) {
482 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
483 kfree(qp);
484 return ERR_PTR(-EFAULT);
485 }
486
487 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
488 context->db_tab,
489 ucmd.sq_db_index, ucmd.sq_db_page);
490 if (err) {
491 kfree(qp);
492 return ERR_PTR(err);
493 }
494
495 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
496 context->db_tab,
497 ucmd.rq_db_index, ucmd.rq_db_page);
498 if (err) {
499 mthca_unmap_user_db(to_mdev(pd->device),
500 &context->uar,
501 context->db_tab,
502 ucmd.sq_db_index);
503 kfree(qp);
504 return ERR_PTR(err);
505 }
506
507 qp->mr.ibmr.lkey = ucmd.lkey;
508 qp->sq.db_index = ucmd.sq_db_index;
509 qp->rq.db_index = ucmd.rq_db_index;
510 }
511
512 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
513 to_mcq(init_attr->send_cq),
514 to_mcq(init_attr->recv_cq),
515 init_attr->qp_type, init_attr->sq_sig_type,
516 &init_attr->cap, qp, udata);
517
518 if (err && udata) {
519 mthca_unmap_user_db(to_mdev(pd->device),
520 &context->uar,
521 context->db_tab,
522 ucmd.sq_db_index);
523 mthca_unmap_user_db(to_mdev(pd->device),
524 &context->uar,
525 context->db_tab,
526 ucmd.rq_db_index);
527 }
528
529 qp->ibqp.qp_num = qp->qpn;
530 break;
531 }
532 case IB_QPT_SMI:
533 case IB_QPT_GSI:
534 {
535 /* Don't allow userspace to create special QPs */
536 if (udata)
537 return ERR_PTR(-EINVAL);
538
539 qp = kzalloc(sizeof(struct mthca_sqp), GFP_KERNEL);
540 if (!qp)
541 return ERR_PTR(-ENOMEM);
542
543 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
544
545 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
546 to_mcq(init_attr->send_cq),
547 to_mcq(init_attr->recv_cq),
548 init_attr->sq_sig_type, &init_attr->cap,
549 qp->ibqp.qp_num, init_attr->port_num,
550 to_msqp(qp), udata);
551 break;
552 }
553 default:
554 /* Don't support raw QPs */
555 return ERR_PTR(-EOPNOTSUPP);
556 }
557
558 if (err) {
559 kfree(qp);
560 return ERR_PTR(err);
561 }
562
563 init_attr->cap.max_send_wr = qp->sq.max;
564 init_attr->cap.max_recv_wr = qp->rq.max;
565 init_attr->cap.max_send_sge = qp->sq.max_gs;
566 init_attr->cap.max_recv_sge = qp->rq.max_gs;
567 init_attr->cap.max_inline_data = qp->max_inline_data;
568
569 return &qp->ibqp;
570}
571
572static int mthca_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
573{
574 if (udata) {
575 struct mthca_ucontext *context =
576 rdma_udata_to_drv_context(
577 udata,
578 struct mthca_ucontext,
579 ibucontext);
580
581 mthca_unmap_user_db(to_mdev(qp->device),
582 &context->uar,
583 context->db_tab,
584 to_mqp(qp)->sq.db_index);
585 mthca_unmap_user_db(to_mdev(qp->device),
586 &context->uar,
587 context->db_tab,
588 to_mqp(qp)->rq.db_index);
589 }
590 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
591 kfree(qp);
592 return 0;
593}
594
595static int mthca_create_cq(struct ib_cq *ibcq,
596 const struct ib_cq_init_attr *attr,
597 struct ib_udata *udata)
598{
599 struct ib_device *ibdev = ibcq->device;
600 int entries = attr->cqe;
601 struct mthca_create_cq ucmd;
602 struct mthca_cq *cq;
603 int nent;
604 int err;
605 struct mthca_ucontext *context = rdma_udata_to_drv_context(
606 udata, struct mthca_ucontext, ibucontext);
607
608 if (attr->flags)
609 return -EINVAL;
610
611 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
612 return -EINVAL;
613
614 if (udata) {
615 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
616 return -EFAULT;
617
618 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
619 context->db_tab, ucmd.set_db_index,
620 ucmd.set_db_page);
621 if (err)
622 return err;
623
624 err = mthca_map_user_db(to_mdev(ibdev), &context->uar,
625 context->db_tab, ucmd.arm_db_index,
626 ucmd.arm_db_page);
627 if (err)
628 goto err_unmap_set;
629 }
630
631 cq = to_mcq(ibcq);
632
633 if (udata) {
634 cq->buf.mr.ibmr.lkey = ucmd.lkey;
635 cq->set_ci_db_index = ucmd.set_db_index;
636 cq->arm_db_index = ucmd.arm_db_index;
637 }
638
639 for (nent = 1; nent <= entries; nent <<= 1)
640 ; /* nothing */
641
642 err = mthca_init_cq(to_mdev(ibdev), nent, context,
643 udata ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
644 cq);
645 if (err)
646 goto err_unmap_arm;
647
648 if (udata && ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) {
649 mthca_free_cq(to_mdev(ibdev), cq);
650 err = -EFAULT;
651 goto err_unmap_arm;
652 }
653
654 cq->resize_buf = NULL;
655
656 return 0;
657
658err_unmap_arm:
659 if (udata)
660 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
661 context->db_tab, ucmd.arm_db_index);
662
663err_unmap_set:
664 if (udata)
665 mthca_unmap_user_db(to_mdev(ibdev), &context->uar,
666 context->db_tab, ucmd.set_db_index);
667
668 return err;
669}
670
671static int mthca_alloc_resize_buf(struct mthca_dev *dev, struct mthca_cq *cq,
672 int entries)
673{
674 int ret;
675
676 spin_lock_irq(&cq->lock);
677 if (cq->resize_buf) {
678 ret = -EBUSY;
679 goto unlock;
680 }
681
682 cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_ATOMIC);
683 if (!cq->resize_buf) {
684 ret = -ENOMEM;
685 goto unlock;
686 }
687
688 cq->resize_buf->state = CQ_RESIZE_ALLOC;
689
690 ret = 0;
691
692unlock:
693 spin_unlock_irq(&cq->lock);
694
695 if (ret)
696 return ret;
697
698 ret = mthca_alloc_cq_buf(dev, &cq->resize_buf->buf, entries);
699 if (ret) {
700 spin_lock_irq(&cq->lock);
701 kfree(cq->resize_buf);
702 cq->resize_buf = NULL;
703 spin_unlock_irq(&cq->lock);
704 return ret;
705 }
706
707 cq->resize_buf->cqe = entries - 1;
708
709 spin_lock_irq(&cq->lock);
710 cq->resize_buf->state = CQ_RESIZE_READY;
711 spin_unlock_irq(&cq->lock);
712
713 return 0;
714}
715
716static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
717{
718 struct mthca_dev *dev = to_mdev(ibcq->device);
719 struct mthca_cq *cq = to_mcq(ibcq);
720 struct mthca_resize_cq ucmd;
721 u32 lkey;
722 int ret;
723
724 if (entries < 1 || entries > dev->limits.max_cqes)
725 return -EINVAL;
726
727 mutex_lock(&cq->mutex);
728
729 entries = roundup_pow_of_two(entries + 1);
730 if (entries == ibcq->cqe + 1) {
731 ret = 0;
732 goto out;
733 }
734
735 if (cq->is_kernel) {
736 ret = mthca_alloc_resize_buf(dev, cq, entries);
737 if (ret)
738 goto out;
739 lkey = cq->resize_buf->buf.mr.ibmr.lkey;
740 } else {
741 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
742 ret = -EFAULT;
743 goto out;
744 }
745 lkey = ucmd.lkey;
746 }
747
748 ret = mthca_RESIZE_CQ(dev, cq->cqn, lkey, ilog2(entries));
749
750 if (ret) {
751 if (cq->resize_buf) {
752 mthca_free_cq_buf(dev, &cq->resize_buf->buf,
753 cq->resize_buf->cqe);
754 kfree(cq->resize_buf);
755 spin_lock_irq(&cq->lock);
756 cq->resize_buf = NULL;
757 spin_unlock_irq(&cq->lock);
758 }
759 goto out;
760 }
761
762 if (cq->is_kernel) {
763 struct mthca_cq_buf tbuf;
764 int tcqe;
765
766 spin_lock_irq(&cq->lock);
767 if (cq->resize_buf->state == CQ_RESIZE_READY) {
768 mthca_cq_resize_copy_cqes(cq);
769 tbuf = cq->buf;
770 tcqe = cq->ibcq.cqe;
771 cq->buf = cq->resize_buf->buf;
772 cq->ibcq.cqe = cq->resize_buf->cqe;
773 } else {
774 tbuf = cq->resize_buf->buf;
775 tcqe = cq->resize_buf->cqe;
776 }
777
778 kfree(cq->resize_buf);
779 cq->resize_buf = NULL;
780 spin_unlock_irq(&cq->lock);
781
782 mthca_free_cq_buf(dev, &tbuf, tcqe);
783 } else
784 ibcq->cqe = entries - 1;
785
786out:
787 mutex_unlock(&cq->mutex);
788
789 return ret;
790}
791
792static void mthca_destroy_cq(struct ib_cq *cq, struct ib_udata *udata)
793{
794 if (udata) {
795 struct mthca_ucontext *context =
796 rdma_udata_to_drv_context(
797 udata,
798 struct mthca_ucontext,
799 ibucontext);
800
801 mthca_unmap_user_db(to_mdev(cq->device),
802 &context->uar,
803 context->db_tab,
804 to_mcq(cq)->arm_db_index);
805 mthca_unmap_user_db(to_mdev(cq->device),
806 &context->uar,
807 context->db_tab,
808 to_mcq(cq)->set_ci_db_index);
809 }
810 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
811}
812
813static inline u32 convert_access(int acc)
814{
815 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
816 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
817 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
818 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
819 MTHCA_MPT_FLAG_LOCAL_READ;
820}
821
822static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
823{
824 struct mthca_mr *mr;
825 int err;
826
827 mr = kmalloc(sizeof *mr, GFP_KERNEL);
828 if (!mr)
829 return ERR_PTR(-ENOMEM);
830
831 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
832 to_mpd(pd)->pd_num,
833 convert_access(acc), mr);
834
835 if (err) {
836 kfree(mr);
837 return ERR_PTR(err);
838 }
839
840 mr->umem = NULL;
841
842 return &mr->ibmr;
843}
844
845static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
846 u64 virt, int acc, struct ib_udata *udata)
847{
848 struct mthca_dev *dev = to_mdev(pd->device);
849 struct sg_dma_page_iter sg_iter;
850 struct mthca_ucontext *context = rdma_udata_to_drv_context(
851 udata, struct mthca_ucontext, ibucontext);
852 struct mthca_mr *mr;
853 struct mthca_reg_mr ucmd;
854 u64 *pages;
855 int n, i;
856 int err = 0;
857 int write_mtt_size;
858
859 if (udata->inlen < sizeof ucmd) {
860 if (!context->reg_mr_warned) {
861 mthca_warn(dev, "Process '%s' did not pass in MR attrs.\n",
862 current->comm);
863 mthca_warn(dev, " Update libmthca to fix this.\n");
864 }
865 ++context->reg_mr_warned;
866 ucmd.mr_attrs = 0;
867 } else if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
868 return ERR_PTR(-EFAULT);
869
870 mr = kmalloc(sizeof *mr, GFP_KERNEL);
871 if (!mr)
872 return ERR_PTR(-ENOMEM);
873
874 mr->umem = ib_umem_get(pd->device, start, length, acc);
875 if (IS_ERR(mr->umem)) {
876 err = PTR_ERR(mr->umem);
877 goto err;
878 }
879
880 n = ib_umem_num_pages(mr->umem);
881
882 mr->mtt = mthca_alloc_mtt(dev, n);
883 if (IS_ERR(mr->mtt)) {
884 err = PTR_ERR(mr->mtt);
885 goto err_umem;
886 }
887
888 pages = (u64 *) __get_free_page(GFP_KERNEL);
889 if (!pages) {
890 err = -ENOMEM;
891 goto err_mtt;
892 }
893
894 i = n = 0;
895
896 write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
897
898 for_each_sg_dma_page(mr->umem->sg_head.sgl, &sg_iter, mr->umem->nmap, 0) {
899 pages[i++] = sg_page_iter_dma_address(&sg_iter);
900
901 /*
902 * Be friendly to write_mtt and pass it chunks
903 * of appropriate size.
904 */
905 if (i == write_mtt_size) {
906 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
907 if (err)
908 goto mtt_done;
909 n += i;
910 i = 0;
911 }
912 }
913
914 if (i)
915 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
916mtt_done:
917 free_page((unsigned long) pages);
918 if (err)
919 goto err_mtt;
920
921 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, PAGE_SHIFT, virt, length,
922 convert_access(acc), mr);
923
924 if (err)
925 goto err_mtt;
926
927 return &mr->ibmr;
928
929err_mtt:
930 mthca_free_mtt(dev, mr->mtt);
931
932err_umem:
933 ib_umem_release(mr->umem);
934
935err:
936 kfree(mr);
937 return ERR_PTR(err);
938}
939
940static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata)
941{
942 struct mthca_mr *mmr = to_mmr(mr);
943
944 mthca_free_mr(to_mdev(mr->device), mmr);
945 ib_umem_release(mmr->umem);
946 kfree(mmr);
947
948 return 0;
949}
950
951static ssize_t hw_rev_show(struct device *device,
952 struct device_attribute *attr, char *buf)
953{
954 struct mthca_dev *dev =
955 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
956
957 return sprintf(buf, "%x\n", dev->rev_id);
958}
959static DEVICE_ATTR_RO(hw_rev);
960
961static ssize_t hca_type_show(struct device *device,
962 struct device_attribute *attr, char *buf)
963{
964 struct mthca_dev *dev =
965 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
966
967 switch (dev->pdev->device) {
968 case PCI_DEVICE_ID_MELLANOX_TAVOR:
969 return sprintf(buf, "MT23108\n");
970 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
971 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
972 case PCI_DEVICE_ID_MELLANOX_ARBEL:
973 return sprintf(buf, "MT25208\n");
974 case PCI_DEVICE_ID_MELLANOX_SINAI:
975 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
976 return sprintf(buf, "MT25204\n");
977 default:
978 return sprintf(buf, "unknown\n");
979 }
980}
981static DEVICE_ATTR_RO(hca_type);
982
983static ssize_t board_id_show(struct device *device,
984 struct device_attribute *attr, char *buf)
985{
986 struct mthca_dev *dev =
987 rdma_device_to_drv_device(device, struct mthca_dev, ib_dev);
988
989 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
990}
991static DEVICE_ATTR_RO(board_id);
992
993static struct attribute *mthca_dev_attributes[] = {
994 &dev_attr_hw_rev.attr,
995 &dev_attr_hca_type.attr,
996 &dev_attr_board_id.attr,
997 NULL
998};
999
1000static const struct attribute_group mthca_attr_group = {
1001 .attrs = mthca_dev_attributes,
1002};
1003
1004static int mthca_init_node_data(struct mthca_dev *dev)
1005{
1006 struct ib_smp *in_mad = NULL;
1007 struct ib_smp *out_mad = NULL;
1008 int err = -ENOMEM;
1009
1010 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1011 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1012 if (!in_mad || !out_mad)
1013 goto out;
1014
1015 init_query_mad(in_mad);
1016 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1017
1018 err = mthca_MAD_IFC(dev, 1, 1,
1019 1, NULL, NULL, in_mad, out_mad);
1020 if (err)
1021 goto out;
1022
1023 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1024
1025 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1026
1027 err = mthca_MAD_IFC(dev, 1, 1,
1028 1, NULL, NULL, in_mad, out_mad);
1029 if (err)
1030 goto out;
1031
1032 if (mthca_is_memfree(dev))
1033 dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1034 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1035
1036out:
1037 kfree(in_mad);
1038 kfree(out_mad);
1039 return err;
1040}
1041
1042static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
1043 struct ib_port_immutable *immutable)
1044{
1045 struct ib_port_attr attr;
1046 int err;
1047
1048 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
1049
1050 err = ib_query_port(ibdev, port_num, &attr);
1051 if (err)
1052 return err;
1053
1054 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1055 immutable->gid_tbl_len = attr.gid_tbl_len;
1056 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
1057
1058 return 0;
1059}
1060
1061static void get_dev_fw_str(struct ib_device *device, char *str)
1062{
1063 struct mthca_dev *dev =
1064 container_of(device, struct mthca_dev, ib_dev);
1065 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
1066 (int) (dev->fw_ver >> 32),
1067 (int) (dev->fw_ver >> 16) & 0xffff,
1068 (int) dev->fw_ver & 0xffff);
1069}
1070
1071static const struct ib_device_ops mthca_dev_ops = {
1072 .owner = THIS_MODULE,
1073 .driver_id = RDMA_DRIVER_MTHCA,
1074 .uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION,
1075 .uverbs_no_driver_id_binding = 1,
1076
1077 .alloc_pd = mthca_alloc_pd,
1078 .alloc_ucontext = mthca_alloc_ucontext,
1079 .attach_mcast = mthca_multicast_attach,
1080 .create_ah = mthca_ah_create,
1081 .create_cq = mthca_create_cq,
1082 .create_qp = mthca_create_qp,
1083 .dealloc_pd = mthca_dealloc_pd,
1084 .dealloc_ucontext = mthca_dealloc_ucontext,
1085 .dereg_mr = mthca_dereg_mr,
1086 .destroy_ah = mthca_ah_destroy,
1087 .destroy_cq = mthca_destroy_cq,
1088 .destroy_qp = mthca_destroy_qp,
1089 .detach_mcast = mthca_multicast_detach,
1090 .get_dev_fw_str = get_dev_fw_str,
1091 .get_dma_mr = mthca_get_dma_mr,
1092 .get_port_immutable = mthca_port_immutable,
1093 .mmap = mthca_mmap_uar,
1094 .modify_device = mthca_modify_device,
1095 .modify_port = mthca_modify_port,
1096 .modify_qp = mthca_modify_qp,
1097 .poll_cq = mthca_poll_cq,
1098 .process_mad = mthca_process_mad,
1099 .query_ah = mthca_ah_query,
1100 .query_device = mthca_query_device,
1101 .query_gid = mthca_query_gid,
1102 .query_pkey = mthca_query_pkey,
1103 .query_port = mthca_query_port,
1104 .query_qp = mthca_query_qp,
1105 .reg_user_mr = mthca_reg_user_mr,
1106 .resize_cq = mthca_resize_cq,
1107
1108 INIT_RDMA_OBJ_SIZE(ib_ah, mthca_ah, ibah),
1109 INIT_RDMA_OBJ_SIZE(ib_cq, mthca_cq, ibcq),
1110 INIT_RDMA_OBJ_SIZE(ib_pd, mthca_pd, ibpd),
1111 INIT_RDMA_OBJ_SIZE(ib_ucontext, mthca_ucontext, ibucontext),
1112};
1113
1114static const struct ib_device_ops mthca_dev_arbel_srq_ops = {
1115 .create_srq = mthca_create_srq,
1116 .destroy_srq = mthca_destroy_srq,
1117 .modify_srq = mthca_modify_srq,
1118 .post_srq_recv = mthca_arbel_post_srq_recv,
1119 .query_srq = mthca_query_srq,
1120
1121 INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq),
1122};
1123
1124static const struct ib_device_ops mthca_dev_tavor_srq_ops = {
1125 .create_srq = mthca_create_srq,
1126 .destroy_srq = mthca_destroy_srq,
1127 .modify_srq = mthca_modify_srq,
1128 .post_srq_recv = mthca_tavor_post_srq_recv,
1129 .query_srq = mthca_query_srq,
1130
1131 INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq),
1132};
1133
1134static const struct ib_device_ops mthca_dev_arbel_ops = {
1135 .post_recv = mthca_arbel_post_receive,
1136 .post_send = mthca_arbel_post_send,
1137 .req_notify_cq = mthca_arbel_arm_cq,
1138};
1139
1140static const struct ib_device_ops mthca_dev_tavor_ops = {
1141 .post_recv = mthca_tavor_post_receive,
1142 .post_send = mthca_tavor_post_send,
1143 .req_notify_cq = mthca_tavor_arm_cq,
1144};
1145
1146int mthca_register_device(struct mthca_dev *dev)
1147{
1148 int ret;
1149
1150 ret = mthca_init_node_data(dev);
1151 if (ret)
1152 return ret;
1153
1154 dev->ib_dev.uverbs_cmd_mask =
1155 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1156 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1157 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1158 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1159 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1160 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1161 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1162 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1163 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1164 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1165 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1166 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1167 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1168 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1169 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1170 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1171 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
1172 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1173 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1174 dev->ib_dev.num_comp_vectors = 1;
1175 dev->ib_dev.dev.parent = &dev->pdev->dev;
1176
1177 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1178 dev->ib_dev.uverbs_cmd_mask |=
1179 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1180 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1181 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1182 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1183
1184 if (mthca_is_memfree(dev))
1185 ib_set_device_ops(&dev->ib_dev,
1186 &mthca_dev_arbel_srq_ops);
1187 else
1188 ib_set_device_ops(&dev->ib_dev,
1189 &mthca_dev_tavor_srq_ops);
1190 }
1191
1192 ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops);
1193
1194 if (mthca_is_memfree(dev))
1195 ib_set_device_ops(&dev->ib_dev, &mthca_dev_arbel_ops);
1196 else
1197 ib_set_device_ops(&dev->ib_dev, &mthca_dev_tavor_ops);
1198
1199 mutex_init(&dev->cap_mask_mutex);
1200
1201 rdma_set_device_sysfs_group(&dev->ib_dev, &mthca_attr_group);
1202 ret = ib_register_device(&dev->ib_dev, "mthca%d");
1203 if (ret)
1204 return ret;
1205
1206 mthca_start_catas_poll(dev);
1207
1208 return 0;
1209}
1210
1211void mthca_unregister_device(struct mthca_dev *dev)
1212{
1213 mthca_stop_catas_poll(dev);
1214 ib_unregister_device(&dev->ib_dev);
1215}