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IB/mthca: prevent event queue overrun
[deliverable/linux.git] / drivers / infiniband / hw / mthca / mthca_provider.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
cd4e8fb4 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
5e0b537c 4 * Copyright (c) 2005 Cisco Systems. All rights reserved.
2a1d9b7f
RD		 5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
1da177e4
LT		 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 1397 2004-12-28 05:09:00Z roland $
37 */
38
a4d61e84 39#include <rdma/ib_smi.h>
883a99c7 40#include <rdma/ib_user_verbs.h>
53b8b3ff 41#include <linux/mm.h>
1da177e4
LT		 42
43#include "mthca_dev.h"
44#include "mthca_cmd.h"
5e0b537c
RD		 45#include "mthca_user.h"
46#include "mthca_memfree.h"
1da177e4
LT		 47
48static int mthca_query_device(struct ib_device *ibdev,
49 struct ib_device_attr *props)
50{
51 struct ib_smp *in_mad = NULL;
52 struct ib_smp *out_mad = NULL;
53 int err = -ENOMEM;
54 struct mthca_dev* mdev = to_mdev(ibdev);
55
56 u8 status;
57
58 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
59 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
60 if (!in_mad || !out_mad)
61 goto out;
62
a852092e 63 memset(props, 0, sizeof *props);
8cf2daf3 64
1da177e4
LT		 65 props->fw_ver = mdev->fw_ver;
66
67 memset(in_mad, 0, sizeof *in_mad);
68 in_mad->base_version = 1;
69 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
70 in_mad->class_version = 1;
71 in_mad->method = IB_MGMT_METHOD_GET;
72 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
73
74 err = mthca_MAD_IFC(mdev, 1, 1,
75 1, NULL, NULL, in_mad, out_mad,
76 &status);
77 if (err)
78 goto out;
79 if (status) {
80 err = -EINVAL;
81 goto out;
82 }
83
8cf2daf3 84 props->device_cap_flags = mdev->device_cap_flags;
97f52eb4 85 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
1da177e4 86 0xffffff;
97f52eb4 87 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
a1c337af 88 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
1da177e4
LT		 89 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
90 memcpy(&props->node_guid, out_mad->data + 12, 8);
91
8cf2daf3 92 props->max_mr_size = ~0ull;
0f69ce1e 93 props->page_size_cap = mdev->limits.page_size_cap;
8cf2daf3 94 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
efaae8f7 95 props->max_qp_wr = mdev->limits.max_wqes;
8cf2daf3
RD		 96 props->max_sge = mdev->limits.max_sg;
97 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
efaae8f7 98 props->max_cqe = mdev->limits.max_cqes;
8cf2daf3
RD		 99 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
100 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
101 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
efaae8f7
JM		 102 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
103 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
104 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
105 props->max_srq_wr = mdev->limits.max_srq_wqes;
106 props->max_srq_sge = mdev->limits.max_sg;
8cf2daf3 107 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
33033b79
JM		 108 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
109 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
efaae8f7
JM		 110 props->max_pkeys = mdev->limits.pkey_table_len;
111 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
112 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
113 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
114 props->max_mcast_grp;
8cf2daf3 115
1da177e4
LT		 116 err = 0;
117 out:
118 kfree(in_mad);
119 kfree(out_mad);
120 return err;
121}
122
123static int mthca_query_port(struct ib_device *ibdev,
124 u8 port, struct ib_port_attr *props)
125{
126 struct ib_smp *in_mad = NULL;
127 struct ib_smp *out_mad = NULL;
128 int err = -ENOMEM;
129 u8 status;
130
131 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
132 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
133 if (!in_mad || !out_mad)
134 goto out;
135
d1887ec2
RD		 136 memset(props, 0, sizeof *props);
137
1da177e4
LT		 138 memset(in_mad, 0, sizeof *in_mad);
139 in_mad->base_version = 1;
140 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
141 in_mad->class_version = 1;
142 in_mad->method = IB_MGMT_METHOD_GET;
143 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
144 in_mad->attr_mod = cpu_to_be32(port);
145
146 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
147 port, NULL, NULL, in_mad, out_mad,
148 &status);
149 if (err)
150 goto out;
151 if (status) {
152 err = -EINVAL;
153 goto out;
154 }
155
97f52eb4 156 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
1da177e4 157 props->lmc = out_mad->data[34] & 0x7;
97f52eb4 158 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
1da177e4
LT		 159 props->sm_sl = out_mad->data[36] & 0xf;
160 props->state = out_mad->data[32] & 0xf;
161 props->phys_state = out_mad->data[33] >> 4;
97f52eb4 162 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
1da177e4 163 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
d1887ec2 164 props->max_msg_sz = 0x80000000;
1da177e4 165 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
9825051e 166 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
97f52eb4 167 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
1da177e4
LT		 168 props->active_width = out_mad->data[31] & 0xf;
169 props->active_speed = out_mad->data[35] >> 4;
9825051e
JM		 170 props->max_mtu = out_mad->data[41] & 0xf;
171 props->active_mtu = out_mad->data[36] >> 4;
172 props->subnet_timeout = out_mad->data[51] & 0x1f;
1da177e4
LT		 173
174 out:
175 kfree(in_mad);
176 kfree(out_mad);
177 return err;
178}
179
180static int mthca_modify_port(struct ib_device *ibdev,
181 u8 port, int port_modify_mask,
182 struct ib_port_modify *props)
183{
184 struct mthca_set_ib_param set_ib;
185 struct ib_port_attr attr;
186 int err;
187 u8 status;
188
189 if (down_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
190 return -ERESTARTSYS;
191
192 err = mthca_query_port(ibdev, port, &attr);
193 if (err)
194 goto out;
195
196 set_ib.set_si_guid = 0;
197 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
198
199 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
200 ~props->clr_port_cap_mask;
201
202 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
203 if (err)
204 goto out;
205 if (status) {
206 err = -EINVAL;
207 goto out;
208 }
209
210out:
211 up(&to_mdev(ibdev)->cap_mask_mutex);
212 return err;
213}
214
215static int mthca_query_pkey(struct ib_device *ibdev,
216 u8 port, u16 index, u16 *pkey)
217{
218 struct ib_smp *in_mad = NULL;
219 struct ib_smp *out_mad = NULL;
220 int err = -ENOMEM;
221 u8 status;
222
223 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
224 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
225 if (!in_mad || !out_mad)
226 goto out;
227
228 memset(in_mad, 0, sizeof *in_mad);
229 in_mad->base_version = 1;
230 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
231 in_mad->class_version = 1;
232 in_mad->method = IB_MGMT_METHOD_GET;
233 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
234 in_mad->attr_mod = cpu_to_be32(index / 32);
235
236 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
237 port, NULL, NULL, in_mad, out_mad,
238 &status);
239 if (err)
240 goto out;
241 if (status) {
242 err = -EINVAL;
243 goto out;
244 }
245
97f52eb4 246 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
1da177e4
LT		 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 u8 status;
261
262 in_mad = kmalloc(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 memset(in_mad, 0, sizeof *in_mad);
268 in_mad->base_version = 1;
269 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
270 in_mad->class_version = 1;
271 in_mad->method = IB_MGMT_METHOD_GET;
272 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
273 in_mad->attr_mod = cpu_to_be32(port);
274
275 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
276 port, NULL, NULL, in_mad, out_mad,
277 &status);
278 if (err)
279 goto out;
280 if (status) {
281 err = -EINVAL;
282 goto out;
283 }
284
285 memcpy(gid->raw, out_mad->data + 8, 8);
286
287 memset(in_mad, 0, sizeof *in_mad);
288 in_mad->base_version = 1;
289 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
290 in_mad->class_version = 1;
291 in_mad->method = IB_MGMT_METHOD_GET;
292 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
293 in_mad->attr_mod = cpu_to_be32(index / 8);
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 + 8, out_mad->data + (index % 8) * 16, 8);
306
307 out:
308 kfree(in_mad);
309 kfree(out_mad);
310 return err;
311}
312
5e0b537c
RD		 313static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
314 struct ib_udata *udata)
315{
316 struct mthca_alloc_ucontext_resp uresp;
317 struct mthca_ucontext *context;
318 int err;
319
320 memset(&uresp, 0, sizeof uresp);
321
322 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
323 if (mthca_is_memfree(to_mdev(ibdev)))
324 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
325 else
326 uresp.uarc_size = 0;
327
328 context = kmalloc(sizeof *context, GFP_KERNEL);
329 if (!context)
330 return ERR_PTR(-ENOMEM);
331
332 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
333 if (err) {
334 kfree(context);
335 return ERR_PTR(err);
336 }
337
338 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
339 if (IS_ERR(context->db_tab)) {
340 err = PTR_ERR(context->db_tab);
341 mthca_uar_free(to_mdev(ibdev), &context->uar);
342 kfree(context);
343 return ERR_PTR(err);
344 }
345
346 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
347 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
348 mthca_uar_free(to_mdev(ibdev), &context->uar);
349 kfree(context);
350 return ERR_PTR(-EFAULT);
351 }
352
353 return &context->ibucontext;
354}
355
356static int mthca_dealloc_ucontext(struct ib_ucontext *context)
357{
358 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
359 to_mucontext(context)->db_tab);
360 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
361 kfree(to_mucontext(context));
362
363 return 0;
364}
365
53b8b3ff
RD		 366static int mthca_mmap_uar(struct ib_ucontext *context,
367 struct vm_area_struct *vma)
368{
369 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
370 return -EINVAL;
371
372 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
373
6d376756
MT		 374 if (io_remap_pfn_range(vma, vma->vm_start,
375 to_mucontext(context)->uar.pfn,
376 PAGE_SIZE, vma->vm_page_prot))
53b8b3ff
RD		 377 return -EAGAIN;
378
379 return 0;
380}
381
1cf296b6
RD		 382static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
383 struct ib_ucontext *context,
384 struct ib_udata *udata)
1da177e4
LT		 385{
386 struct mthca_pd *pd;
387 int err;
388
389 pd = kmalloc(sizeof *pd, GFP_KERNEL);
390 if (!pd)
391 return ERR_PTR(-ENOMEM);
392
99264c1e 393 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
1da177e4
LT		 394 if (err) {
395 kfree(pd);
396 return ERR_PTR(err);
397 }
398
99264c1e
RD		 399 if (context) {
400 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
401 mthca_pd_free(to_mdev(ibdev), pd);
402 kfree(pd);
403 return ERR_PTR(-EFAULT);
404 }
405 }
406
1da177e4
LT		 407 return &pd->ibpd;
408}
409
410static int mthca_dealloc_pd(struct ib_pd *pd)
411{
412 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
413 kfree(pd);
414
415 return 0;
416}
417
418static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
419 struct ib_ah_attr *ah_attr)
420{
421 int err;
422 struct mthca_ah *ah;
423
8df8a34d 424 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
1da177e4
LT		 425 if (!ah)
426 return ERR_PTR(-ENOMEM);
427
428 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
429 if (err) {
430 kfree(ah);
431 return ERR_PTR(err);
432 }
433
434 return &ah->ibah;
435}
436
437static int mthca_ah_destroy(struct ib_ah *ah)
438{
439 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
440 kfree(ah);
441
442 return 0;
443}
444
ec34a922
RD		 445static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
446 struct ib_srq_init_attr *init_attr,
447 struct ib_udata *udata)
448{
449 struct mthca_create_srq ucmd;
450 struct mthca_ucontext *context = NULL;
451 struct mthca_srq *srq;
452 int err;
453
454 srq = kmalloc(sizeof *srq, GFP_KERNEL);
455 if (!srq)
456 return ERR_PTR(-ENOMEM);
457
458 if (pd->uobject) {
459 context = to_mucontext(pd->uobject->context);
460
461 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
462 return ERR_PTR(-EFAULT);
463
464 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
465 context->db_tab, ucmd.db_index,
466 ucmd.db_page);
467
468 if (err)
469 goto err_free;
470
471 srq->mr.ibmr.lkey = ucmd.lkey;
472 srq->db_index = ucmd.db_index;
473 }
474
475 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
476 &init_attr->attr, srq);
477
478 if (err && pd->uobject)
479 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
480 context->db_tab, ucmd.db_index);
481
482 if (err)
483 goto err_free;
484
485 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
486 mthca_free_srq(to_mdev(pd->device), srq);
487 err = -EFAULT;
488 goto err_free;
489 }
490
491 return &srq->ibsrq;
492
493err_free:
494 kfree(srq);
495
496 return ERR_PTR(err);
497}
498
499static int mthca_destroy_srq(struct ib_srq *srq)
500{
501 struct mthca_ucontext *context;
502
503 if (srq->uobject) {
504 context = to_mucontext(srq->uobject->context);
505
506 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
507 context->db_tab, to_msrq(srq)->db_index);
508 }
509
510 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
511 kfree(srq);
512
513 return 0;
514}
515
1da177e4 516static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
1cf296b6
RD		 517 struct ib_qp_init_attr *init_attr,
518 struct ib_udata *udata)
1da177e4 519{
80c8ec2c 520 struct mthca_create_qp ucmd;
1da177e4
LT		 521 struct mthca_qp *qp;
522 int err;
523
524 switch (init_attr->qp_type) {
525 case IB_QPT_RC:
526 case IB_QPT_UC:
527 case IB_QPT_UD:
528 {
80c8ec2c
RD		 529 struct mthca_ucontext *context;
530
1da177e4
LT		 531 qp = kmalloc(sizeof *qp, GFP_KERNEL);
532 if (!qp)
533 return ERR_PTR(-ENOMEM);
534
80c8ec2c
RD		 535 if (pd->uobject) {
536 context = to_mucontext(pd->uobject->context);
537
538 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
539 return ERR_PTR(-EFAULT);
540
541 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
542 context->db_tab,
543 ucmd.sq_db_index, ucmd.sq_db_page);
544 if (err) {
545 kfree(qp);
546 return ERR_PTR(err);
547 }
548
549 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
550 context->db_tab,
551 ucmd.rq_db_index, ucmd.rq_db_page);
552 if (err) {
553 mthca_unmap_user_db(to_mdev(pd->device),
554 &context->uar,
555 context->db_tab,
556 ucmd.sq_db_index);
557 kfree(qp);
558 return ERR_PTR(err);
559 }
560
561 qp->mr.ibmr.lkey = ucmd.lkey;
562 qp->sq.db_index = ucmd.sq_db_index;
563 qp->rq.db_index = ucmd.rq_db_index;
564 }
1da177e4
LT		 565
566 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
567 to_mcq(init_attr->send_cq),
568 to_mcq(init_attr->recv_cq),
569 init_attr->qp_type, init_attr->sq_sig_type,
80c8ec2c
RD		 570 &init_attr->cap, qp);
571
572 if (err && pd->uobject) {
573 context = to_mucontext(pd->uobject->context);
574
575 mthca_unmap_user_db(to_mdev(pd->device),
576 &context->uar,
577 context->db_tab,
578 ucmd.sq_db_index);
579 mthca_unmap_user_db(to_mdev(pd->device),
580 &context->uar,
581 context->db_tab,
582 ucmd.rq_db_index);
583 }
584
1da177e4
LT		 585 qp->ibqp.qp_num = qp->qpn;
586 break;
587 }
588 case IB_QPT_SMI:
589 case IB_QPT_GSI:
590 {
80c8ec2c
RD		 591 /* Don't allow userspace to create special QPs */
592 if (pd->uobject)
593 return ERR_PTR(-EINVAL);
594
1da177e4
LT		 595 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
596 if (!qp)
597 return ERR_PTR(-ENOMEM);
598
1da177e4
LT		 599 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
600
601 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
602 to_mcq(init_attr->send_cq),
603 to_mcq(init_attr->recv_cq),
80c8ec2c 604 init_attr->sq_sig_type, &init_attr->cap,
1da177e4
LT		 605 qp->ibqp.qp_num, init_attr->port_num,
606 to_msqp(qp));
607 break;
608 }
609 default:
610 /* Don't support raw QPs */
611 return ERR_PTR(-ENOSYS);
612 }
613
614 if (err) {
615 kfree(qp);
616 return ERR_PTR(err);
617 }
618
80c8ec2c
RD		 619 init_attr->cap.max_send_wr = qp->sq.max;
620 init_attr->cap.max_recv_wr = qp->rq.max;
621 init_attr->cap.max_send_sge = qp->sq.max_gs;
622 init_attr->cap.max_recv_sge = qp->rq.max_gs;
77369ed3 623 init_attr->cap.max_inline_data = qp->max_inline_data;
1da177e4
LT		 624
625 return &qp->ibqp;
626}
627
628static int mthca_destroy_qp(struct ib_qp *qp)
629{
80c8ec2c
RD		 630 if (qp->uobject) {
631 mthca_unmap_user_db(to_mdev(qp->device),
632 &to_mucontext(qp->uobject->context)->uar,
633 to_mucontext(qp->uobject->context)->db_tab,
634 to_mqp(qp)->sq.db_index);
635 mthca_unmap_user_db(to_mdev(qp->device),
636 &to_mucontext(qp->uobject->context)->uar,
637 to_mucontext(qp->uobject->context)->db_tab,
638 to_mqp(qp)->rq.db_index);
639 }
1da177e4
LT		 640 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
641 kfree(qp);
642 return 0;
643}
644
1cf296b6
RD		 645static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
646 struct ib_ucontext *context,
647 struct ib_udata *udata)
1da177e4 648{
74c2174e 649 struct mthca_create_cq ucmd;
1da177e4
LT		 650 struct mthca_cq *cq;
651 int nent;
652 int err;
653
efaae8f7
JM		 654 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
655 return ERR_PTR(-EINVAL);
656
74c2174e
RD		 657 if (context) {
658 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
659 return ERR_PTR(-EFAULT);
660
661 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
662 to_mucontext(context)->db_tab,
663 ucmd.set_db_index, ucmd.set_db_page);
664 if (err)
665 return ERR_PTR(err);
666
667 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
668 to_mucontext(context)->db_tab,
669 ucmd.arm_db_index, ucmd.arm_db_page);
670 if (err)
671 goto err_unmap_set;
672 }
673
1da177e4 674 cq = kmalloc(sizeof *cq, GFP_KERNEL);
74c2174e
RD		 675 if (!cq) {
676 err = -ENOMEM;
677 goto err_unmap_arm;
678 }
679
680 if (context) {
681 cq->mr.ibmr.lkey = ucmd.lkey;
682 cq->set_ci_db_index = ucmd.set_db_index;
683 cq->arm_db_index = ucmd.arm_db_index;
684 }
1da177e4
LT		 685
686 for (nent = 1; nent <= entries; nent <<= 1)
687 ; /* nothing */
688
74c2174e
RD		 689 err = mthca_init_cq(to_mdev(ibdev), nent,
690 context ? to_mucontext(context) : NULL,
691 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
692 cq);
693 if (err)
694 goto err_free;
695
696 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
697 mthca_free_cq(to_mdev(ibdev), cq);
698 goto err_free;
1da177e4
LT		 699 }
700
701 return &cq->ibcq;
74c2174e
RD		 702
703err_free:
704 kfree(cq);
705
706err_unmap_arm:
707 if (context)
708 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
709 to_mucontext(context)->db_tab, ucmd.arm_db_index);
710
711err_unmap_set:
712 if (context)
713 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
714 to_mucontext(context)->db_tab, ucmd.set_db_index);
715
716 return ERR_PTR(err);
1da177e4
LT		 717}
718
719static int mthca_destroy_cq(struct ib_cq *cq)
720{
74c2174e
RD		 721 if (cq->uobject) {
722 mthca_unmap_user_db(to_mdev(cq->device),
723 &to_mucontext(cq->uobject->context)->uar,
724 to_mucontext(cq->uobject->context)->db_tab,
725 to_mcq(cq)->arm_db_index);
726 mthca_unmap_user_db(to_mdev(cq->device),
727 &to_mucontext(cq->uobject->context)->uar,
728 to_mucontext(cq->uobject->context)->db_tab,
729 to_mcq(cq)->set_ci_db_index);
730 }
1da177e4
LT		 731 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
732 kfree(cq);
733
734 return 0;
735}
736
737static inline u32 convert_access(int acc)
738{
739 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
740 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
741 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
742 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
743 MTHCA_MPT_FLAG_LOCAL_READ;
744}
745
746static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
747{
748 struct mthca_mr *mr;
749 int err;
750
751 mr = kmalloc(sizeof *mr, GFP_KERNEL);
752 if (!mr)
753 return ERR_PTR(-ENOMEM);
754
755 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
756 to_mpd(pd)->pd_num,
757 convert_access(acc), mr);
758
759 if (err) {
760 kfree(mr);
761 return ERR_PTR(err);
762 }
763
764 return &mr->ibmr;
765}
766
767static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
768 struct ib_phys_buf *buffer_list,
769 int num_phys_buf,
770 int acc,
771 u64 *iova_start)
772{
773 struct mthca_mr *mr;
774 u64 *page_list;
775 u64 total_size;
776 u64 mask;
777 int shift;
778 int npages;
779 int err;
780 int i, j, n;
781
782 /* First check that we have enough alignment */
783 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
784 return ERR_PTR(-EINVAL);
785
1da177e4
LT		 786 mask = 0;
787 total_size = 0;
788 for (i = 0; i < num_phys_buf; ++i) {
6627fa66
MT		 789 if (i != 0)
790 mask |= buffer_list[i].addr;
791 if (i != num_phys_buf - 1)
792 mask |= buffer_list[i].addr + buffer_list[i].size;
1da177e4
LT		 793
794 total_size += buffer_list[i].size;
1da177e4
LT		 795 }
796
6627fa66
MT		 797 if (mask & ~PAGE_MASK)
798 return ERR_PTR(-EINVAL);
799
1da177e4
LT		 800 /* Find largest page shift we can use to cover buffers */
801 for (shift = PAGE_SHIFT; shift < 31; ++shift)
802 if (num_phys_buf > 1) {
803 if ((1ULL << shift) & mask)
804 break;
805 } else {
806 if (1ULL << shift >=
807 buffer_list[0].size +
808 (buffer_list[0].addr & ((1ULL << shift) - 1)))
809 break;
810 }
811
812 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
813 buffer_list[0].addr &= ~0ull << shift;
814
815 mr = kmalloc(sizeof *mr, GFP_KERNEL);
816 if (!mr)
817 return ERR_PTR(-ENOMEM);
818
819 npages = 0;
820 for (i = 0; i < num_phys_buf; ++i)
821 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
822
823 if (!npages)
824 return &mr->ibmr;
825
826 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
827 if (!page_list) {
828 kfree(mr);
829 return ERR_PTR(-ENOMEM);
830 }
831
832 n = 0;
833 for (i = 0; i < num_phys_buf; ++i)
834 for (j = 0;
835 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
836 ++j)
837 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
838
839 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
840 "in PD %x; shift %d, npages %d.\n",
841 (unsigned long long) buffer_list[0].addr,
842 (unsigned long long) *iova_start,
843 to_mpd(pd)->pd_num,
844 shift, npages);
845
846 err = mthca_mr_alloc_phys(to_mdev(pd->device),
847 to_mpd(pd)->pd_num,
848 page_list, shift, npages,
849 *iova_start, total_size,
850 convert_access(acc), mr);
851
852 if (err) {
761f9eb8 853 kfree(page_list);
1da177e4
LT		 854 kfree(mr);
855 return ERR_PTR(err);
856 }
857
858 kfree(page_list);
859 return &mr->ibmr;
860}
861
24d4281b
RD		 862static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
863 int acc, struct ib_udata *udata)
864{
865 struct mthca_dev *dev = to_mdev(pd->device);
866 struct ib_umem_chunk *chunk;
867 struct mthca_mr *mr;
868 u64 *pages;
869 int shift, n, len;
870 int i, j, k;
871 int err = 0;
872
873 shift = ffs(region->page_size) - 1;
874
875 mr = kmalloc(sizeof *mr, GFP_KERNEL);
876 if (!mr)
877 return ERR_PTR(-ENOMEM);
878
879 n = 0;
880 list_for_each_entry(chunk, &region->chunk_list, list)
881 n += chunk->nents;
882
883 mr->mtt = mthca_alloc_mtt(dev, n);
884 if (IS_ERR(mr->mtt)) {
885 err = PTR_ERR(mr->mtt);
886 goto err;
887 }
888
889 pages = (u64 *) __get_free_page(GFP_KERNEL);
890 if (!pages) {
891 err = -ENOMEM;
892 goto err_mtt;
893 }
894
895 i = n = 0;
896
897 list_for_each_entry(chunk, &region->chunk_list, list)
898 for (j = 0; j < chunk->nmap; ++j) {
899 len = sg_dma_len(&chunk->page_list[j]) >> shift;
900 for (k = 0; k < len; ++k) {
901 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
902 region->page_size * k;
903 /*
904 * Be friendly to WRITE_MTT command
905 * and leave two empty slots for the
906 * index and reserved fields of the
907 * mailbox.
908 */
909 if (i == PAGE_SIZE / sizeof (u64) - 2) {
910 err = mthca_write_mtt(dev, mr->mtt,
911 n, pages, i);
912 if (err)
913 goto mtt_done;
914 n += i;
915 i = 0;
916 }
917 }
918 }
919
920 if (i)
921 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
922mtt_done:
923 free_page((unsigned long) pages);
924 if (err)
925 goto err_mtt;
926
927 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
928 region->length, convert_access(acc), mr);
929
930 if (err)
931 goto err_mtt;
932
933 return &mr->ibmr;
934
935err_mtt:
936 mthca_free_mtt(dev, mr->mtt);
937
938err:
939 kfree(mr);
940 return ERR_PTR(err);
941}
942
1da177e4
LT		 943static int mthca_dereg_mr(struct ib_mr *mr)
944{
e464b2a6
RD		 945 struct mthca_mr *mmr = to_mmr(mr);
946 mthca_free_mr(to_mdev(mr->device), mmr);
947 kfree(mmr);
1da177e4
LT		 948 return 0;
949}
950
e0f5fdca
MT		 951static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
952 struct ib_fmr_attr *fmr_attr)
953{
954 struct mthca_fmr *fmr;
955 int err;
956
957 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
958 if (!fmr)
959 return ERR_PTR(-ENOMEM);
960
961 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
962 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
963 convert_access(mr_access_flags), fmr);
964
965 if (err) {
966 kfree(fmr);
967 return ERR_PTR(err);
968 }
969
970 return &fmr->ibmr;
971}
972
973static int mthca_dealloc_fmr(struct ib_fmr *fmr)
974{
975 struct mthca_fmr *mfmr = to_mfmr(fmr);
976 int err;
977
978 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
979 if (err)
980 return err;
981
982 kfree(mfmr);
983 return 0;
984}
985
986static int mthca_unmap_fmr(struct list_head *fmr_list)
987{
988 struct ib_fmr *fmr;
989 int err;
990 u8 status;
991 struct mthca_dev *mdev = NULL;
992
993 list_for_each_entry(fmr, fmr_list, list) {
994 if (mdev && to_mdev(fmr->device) != mdev)
995 return -EINVAL;
996 mdev = to_mdev(fmr->device);
997 }
998
999 if (!mdev)
1000 return 0;
1001
d10ddbf6 1002 if (mthca_is_memfree(mdev)) {
e0f5fdca
MT		 1003 list_for_each_entry(fmr, fmr_list, list)
1004 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1005
1006 wmb();
1007 } else
1008 list_for_each_entry(fmr, fmr_list, list)
1009 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1010
1011 err = mthca_SYNC_TPT(mdev, &status);
1012 if (err)
1013 return err;
1014 if (status)
1015 return -EINVAL;
1016 return 0;
1017}
1018
1da177e4
LT		 1019static ssize_t show_rev(struct class_device *cdev, char *buf)
1020{
1021 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1022 return sprintf(buf, "%x\n", dev->rev_id);
1023}
1024
1025static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1026{
1027 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
87cfe323 1028 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1da177e4
LT		 1029 (int) (dev->fw_ver >> 16) & 0xffff,
1030 (int) dev->fw_ver & 0xffff);
1031}
1032
1033static ssize_t show_hca(struct class_device *cdev, char *buf)
1034{
1035 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
68a3c212
RD		 1036 switch (dev->pdev->device) {
1037 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1038 return sprintf(buf, "MT23108\n");
1039 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1040 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1041 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1042 return sprintf(buf, "MT25208\n");
1043 case PCI_DEVICE_ID_MELLANOX_SINAI:
1044 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1045 return sprintf(buf, "MT25204\n");
1046 default:
1047 return sprintf(buf, "unknown\n");
1da177e4
LT		 1048 }
1049}
1050
2e8b981c
MT		 1051static ssize_t show_board(struct class_device *cdev, char *buf)
1052{
1053 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1054 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1055}
1056
1da177e4
LT		 1057static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1058static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1059static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2e8b981c 1060static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1da177e4
LT		 1061
1062static struct class_device_attribute *mthca_class_attributes[] = {
1063 &class_device_attr_hw_rev,
1064 &class_device_attr_fw_ver,
2e8b981c
MT		 1065 &class_device_attr_hca_type,
1066 &class_device_attr_board_id
1da177e4
LT		 1067};
1068
1069int mthca_register_device(struct mthca_dev *dev)
1070{
1071 int ret;
1072 int i;
1073
1074 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1cf296b6
RD		 1075 dev->ib_dev.owner = THIS_MODULE;
1076
274c0891 1077 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
883a99c7
RD		 1078 dev->ib_dev.uverbs_cmd_mask =
1079 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1080 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1081 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1082 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1083 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1084 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1085 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1086 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1087 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1088 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1089 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1090 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1091 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1092 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1093 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1094 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1095 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1096 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1da177e4
LT		 1097 dev->ib_dev.node_type = IB_NODE_CA;
1098 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1099 dev->ib_dev.dma_device = &dev->pdev->dev;
1100 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
1101 dev->ib_dev.query_device = mthca_query_device;
1102 dev->ib_dev.query_port = mthca_query_port;
1103 dev->ib_dev.modify_port = mthca_modify_port;
1104 dev->ib_dev.query_pkey = mthca_query_pkey;
1105 dev->ib_dev.query_gid = mthca_query_gid;
5e0b537c
RD		 1106 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1107 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
53b8b3ff 1108 dev->ib_dev.mmap = mthca_mmap_uar;
1da177e4
LT		 1109 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1110 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1111 dev->ib_dev.create_ah = mthca_ah_create;
1112 dev->ib_dev.destroy_ah = mthca_ah_destroy;
ec34a922
RD		 1113
1114 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1115 dev->ib_dev.create_srq = mthca_create_srq;
90f104da 1116 dev->ib_dev.modify_srq = mthca_modify_srq;
ec34a922
RD		 1117 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1118
1119 if (mthca_is_memfree(dev))
1120 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1121 else
1122 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1123 }
1124
1da177e4
LT		 1125 dev->ib_dev.create_qp = mthca_create_qp;
1126 dev->ib_dev.modify_qp = mthca_modify_qp;
1127 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1128 dev->ib_dev.create_cq = mthca_create_cq;
1129 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1130 dev->ib_dev.poll_cq = mthca_poll_cq;
1131 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1132 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
24d4281b 1133 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1da177e4 1134 dev->ib_dev.dereg_mr = mthca_dereg_mr;
e0f5fdca
MT		 1135
1136 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1137 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1138 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1139 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
d10ddbf6 1140 if (mthca_is_memfree(dev))
e0f5fdca
MT		 1141 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1142 else
1143 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1144 }
1145
1da177e4
LT		 1146 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1147 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1148 dev->ib_dev.process_mad = mthca_process_mad;
1149
d10ddbf6 1150 if (mthca_is_memfree(dev)) {
1da177e4
LT		 1151 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1152 dev->ib_dev.post_send = mthca_arbel_post_send;
1153 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1154 } else {
1155 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1156 dev->ib_dev.post_send = mthca_tavor_post_send;
1157 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1158 }
1159
1160 init_MUTEX(&dev->cap_mask_mutex);
1161
1162 ret = ib_register_device(&dev->ib_dev);
1163 if (ret)
1164 return ret;
1165
1166 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1167 ret = class_device_create_file(&dev->ib_dev.class_dev,
1168 mthca_class_attributes[i]);
1169 if (ret) {
1170 ib_unregister_device(&dev->ib_dev);
1171 return ret;
1172 }
1173 }
1174
3d155f8c
RD		 1175 mthca_start_catas_poll(dev);
1176
1da177e4
LT		 1177 return 0;
1178}
1179
1180void mthca_unregister_device(struct mthca_dev *dev)
1181{
3d155f8c 1182 mthca_stop_catas_poll(dev);
1da177e4
LT		 1183 ib_unregister_device(&dev->ib_dev);
1184}
Linux kernel - Deliverables
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