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[linux-block.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
RD		 92 props->max_mr_size = ~0ull;
93 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
efaae8f7 94 props->max_qp_wr = mdev->limits.max_wqes;
8cf2daf3
RD		 95 props->max_sge = mdev->limits.max_sg;
96 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
efaae8f7 97 props->max_cqe = mdev->limits.max_cqes;
8cf2daf3
RD		 98 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
99 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
100 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
efaae8f7
JM		 101 props->max_qp_init_rd_atom = mdev->limits.max_qp_init_rdma;
102 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
103 props->max_srq = mdev->limits.num_srqs - mdev->limits.reserved_srqs;
104 props->max_srq_wr = mdev->limits.max_srq_wqes;
105 props->max_srq_sge = mdev->limits.max_sg;
8cf2daf3 106 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
33033b79
JM		 107 props->atomic_cap = mdev->limits.flags & DEV_LIM_FLAG_ATOMIC ?
108 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
efaae8f7
JM		 109 props->max_pkeys = mdev->limits.pkey_table_len;
110 props->max_mcast_grp = mdev->limits.num_mgms + mdev->limits.num_amgms;
111 props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
112 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
113 props->max_mcast_grp;
8cf2daf3 114
1da177e4
LT		 115 err = 0;
116 out:
117 kfree(in_mad);
118 kfree(out_mad);
119 return err;
120}
121
122static int mthca_query_port(struct ib_device *ibdev,
123 u8 port, struct ib_port_attr *props)
124{
125 struct ib_smp *in_mad = NULL;
126 struct ib_smp *out_mad = NULL;
127 int err = -ENOMEM;
128 u8 status;
129
130 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
131 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
132 if (!in_mad || !out_mad)
133 goto out;
134
d1887ec2
RD		 135 memset(props, 0, sizeof *props);
136
1da177e4
LT		 137 memset(in_mad, 0, sizeof *in_mad);
138 in_mad->base_version = 1;
139 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
140 in_mad->class_version = 1;
141 in_mad->method = IB_MGMT_METHOD_GET;
142 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
143 in_mad->attr_mod = cpu_to_be32(port);
144
145 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
146 port, NULL, NULL, in_mad, out_mad,
147 &status);
148 if (err)
149 goto out;
150 if (status) {
151 err = -EINVAL;
152 goto out;
153 }
154
97f52eb4 155 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
1da177e4 156 props->lmc = out_mad->data[34] & 0x7;
97f52eb4 157 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
1da177e4
LT		 158 props->sm_sl = out_mad->data[36] & 0xf;
159 props->state = out_mad->data[32] & 0xf;
160 props->phys_state = out_mad->data[33] >> 4;
97f52eb4 161 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
1da177e4 162 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
d1887ec2 163 props->max_msg_sz = 0x80000000;
1da177e4 164 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
9825051e 165 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
97f52eb4 166 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
1da177e4
LT		 167 props->active_width = out_mad->data[31] & 0xf;
168 props->active_speed = out_mad->data[35] >> 4;
9825051e
JM		 169 props->max_mtu = out_mad->data[41] & 0xf;
170 props->active_mtu = out_mad->data[36] >> 4;
171 props->subnet_timeout = out_mad->data[51] & 0x1f;
1da177e4
LT		 172
173 out:
174 kfree(in_mad);
175 kfree(out_mad);
176 return err;
177}
178
179static int mthca_modify_port(struct ib_device *ibdev,
180 u8 port, int port_modify_mask,
181 struct ib_port_modify *props)
182{
183 struct mthca_set_ib_param set_ib;
184 struct ib_port_attr attr;
185 int err;
186 u8 status;
187
188 if (down_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
189 return -ERESTARTSYS;
190
191 err = mthca_query_port(ibdev, port, &attr);
192 if (err)
193 goto out;
194
195 set_ib.set_si_guid = 0;
196 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
197
198 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
199 ~props->clr_port_cap_mask;
200
201 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
202 if (err)
203 goto out;
204 if (status) {
205 err = -EINVAL;
206 goto out;
207 }
208
209out:
210 up(&to_mdev(ibdev)->cap_mask_mutex);
211 return err;
212}
213
214static int mthca_query_pkey(struct ib_device *ibdev,
215 u8 port, u16 index, u16 *pkey)
216{
217 struct ib_smp *in_mad = NULL;
218 struct ib_smp *out_mad = NULL;
219 int err = -ENOMEM;
220 u8 status;
221
222 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
223 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
224 if (!in_mad || !out_mad)
225 goto out;
226
227 memset(in_mad, 0, sizeof *in_mad);
228 in_mad->base_version = 1;
229 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
230 in_mad->class_version = 1;
231 in_mad->method = IB_MGMT_METHOD_GET;
232 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
233 in_mad->attr_mod = cpu_to_be32(index / 32);
234
235 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
236 port, NULL, NULL, in_mad, out_mad,
237 &status);
238 if (err)
239 goto out;
240 if (status) {
241 err = -EINVAL;
242 goto out;
243 }
244
97f52eb4 245 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
1da177e4
LT		 246
247 out:
248 kfree(in_mad);
249 kfree(out_mad);
250 return err;
251}
252
253static int mthca_query_gid(struct ib_device *ibdev, u8 port,
254 int index, union ib_gid *gid)
255{
256 struct ib_smp *in_mad = NULL;
257 struct ib_smp *out_mad = NULL;
258 int err = -ENOMEM;
259 u8 status;
260
261 in_mad = kmalloc(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 memset(in_mad, 0, sizeof *in_mad);
267 in_mad->base_version = 1;
268 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
269 in_mad->class_version = 1;
270 in_mad->method = IB_MGMT_METHOD_GET;
271 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
272 in_mad->attr_mod = cpu_to_be32(port);
273
274 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
275 port, NULL, NULL, in_mad, out_mad,
276 &status);
277 if (err)
278 goto out;
279 if (status) {
280 err = -EINVAL;
281 goto out;
282 }
283
284 memcpy(gid->raw, out_mad->data + 8, 8);
285
286 memset(in_mad, 0, sizeof *in_mad);
287 in_mad->base_version = 1;
288 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
289 in_mad->class_version = 1;
290 in_mad->method = IB_MGMT_METHOD_GET;
291 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
292 in_mad->attr_mod = cpu_to_be32(index / 8);
293
294 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
295 port, NULL, NULL, in_mad, out_mad,
296 &status);
297 if (err)
298 goto out;
299 if (status) {
300 err = -EINVAL;
301 goto out;
302 }
303
304 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 16, 8);
305
306 out:
307 kfree(in_mad);
308 kfree(out_mad);
309 return err;
310}
311
5e0b537c
RD		 312static struct ib_ucontext *mthca_alloc_ucontext(struct ib_device *ibdev,
313 struct ib_udata *udata)
314{
315 struct mthca_alloc_ucontext_resp uresp;
316 struct mthca_ucontext *context;
317 int err;
318
319 memset(&uresp, 0, sizeof uresp);
320
321 uresp.qp_tab_size = to_mdev(ibdev)->limits.num_qps;
322 if (mthca_is_memfree(to_mdev(ibdev)))
323 uresp.uarc_size = to_mdev(ibdev)->uar_table.uarc_size;
324 else
325 uresp.uarc_size = 0;
326
327 context = kmalloc(sizeof *context, GFP_KERNEL);
328 if (!context)
329 return ERR_PTR(-ENOMEM);
330
331 err = mthca_uar_alloc(to_mdev(ibdev), &context->uar);
332 if (err) {
333 kfree(context);
334 return ERR_PTR(err);
335 }
336
337 context->db_tab = mthca_init_user_db_tab(to_mdev(ibdev));
338 if (IS_ERR(context->db_tab)) {
339 err = PTR_ERR(context->db_tab);
340 mthca_uar_free(to_mdev(ibdev), &context->uar);
341 kfree(context);
342 return ERR_PTR(err);
343 }
344
345 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
346 mthca_cleanup_user_db_tab(to_mdev(ibdev), &context->uar, context->db_tab);
347 mthca_uar_free(to_mdev(ibdev), &context->uar);
348 kfree(context);
349 return ERR_PTR(-EFAULT);
350 }
351
352 return &context->ibucontext;
353}
354
355static int mthca_dealloc_ucontext(struct ib_ucontext *context)
356{
357 mthca_cleanup_user_db_tab(to_mdev(context->device), &to_mucontext(context)->uar,
358 to_mucontext(context)->db_tab);
359 mthca_uar_free(to_mdev(context->device), &to_mucontext(context)->uar);
360 kfree(to_mucontext(context));
361
362 return 0;
363}
364
53b8b3ff
RD		 365static int mthca_mmap_uar(struct ib_ucontext *context,
366 struct vm_area_struct *vma)
367{
368 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
369 return -EINVAL;
370
371 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
372
6d376756
MT		 373 if (io_remap_pfn_range(vma, vma->vm_start,
374 to_mucontext(context)->uar.pfn,
375 PAGE_SIZE, vma->vm_page_prot))
53b8b3ff
RD		 376 return -EAGAIN;
377
378 return 0;
379}
380
1cf296b6
RD		 381static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev,
382 struct ib_ucontext *context,
383 struct ib_udata *udata)
1da177e4
LT		 384{
385 struct mthca_pd *pd;
386 int err;
387
388 pd = kmalloc(sizeof *pd, GFP_KERNEL);
389 if (!pd)
390 return ERR_PTR(-ENOMEM);
391
99264c1e 392 err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
1da177e4
LT		 393 if (err) {
394 kfree(pd);
395 return ERR_PTR(err);
396 }
397
99264c1e
RD		 398 if (context) {
399 if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
400 mthca_pd_free(to_mdev(ibdev), pd);
401 kfree(pd);
402 return ERR_PTR(-EFAULT);
403 }
404 }
405
1da177e4
LT		 406 return &pd->ibpd;
407}
408
409static int mthca_dealloc_pd(struct ib_pd *pd)
410{
411 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
412 kfree(pd);
413
414 return 0;
415}
416
417static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
418 struct ib_ah_attr *ah_attr)
419{
420 int err;
421 struct mthca_ah *ah;
422
8df8a34d 423 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
1da177e4
LT		 424 if (!ah)
425 return ERR_PTR(-ENOMEM);
426
427 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
428 if (err) {
429 kfree(ah);
430 return ERR_PTR(err);
431 }
432
433 return &ah->ibah;
434}
435
436static int mthca_ah_destroy(struct ib_ah *ah)
437{
438 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
439 kfree(ah);
440
441 return 0;
442}
443
ec34a922
RD		 444static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
445 struct ib_srq_init_attr *init_attr,
446 struct ib_udata *udata)
447{
448 struct mthca_create_srq ucmd;
449 struct mthca_ucontext *context = NULL;
450 struct mthca_srq *srq;
451 int err;
452
453 srq = kmalloc(sizeof *srq, GFP_KERNEL);
454 if (!srq)
455 return ERR_PTR(-ENOMEM);
456
457 if (pd->uobject) {
458 context = to_mucontext(pd->uobject->context);
459
460 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
461 return ERR_PTR(-EFAULT);
462
463 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
464 context->db_tab, ucmd.db_index,
465 ucmd.db_page);
466
467 if (err)
468 goto err_free;
469
470 srq->mr.ibmr.lkey = ucmd.lkey;
471 srq->db_index = ucmd.db_index;
472 }
473
474 err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
475 &init_attr->attr, srq);
476
477 if (err && pd->uobject)
478 mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
479 context->db_tab, ucmd.db_index);
480
481 if (err)
482 goto err_free;
483
484 if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
485 mthca_free_srq(to_mdev(pd->device), srq);
486 err = -EFAULT;
487 goto err_free;
488 }
489
490 return &srq->ibsrq;
491
492err_free:
493 kfree(srq);
494
495 return ERR_PTR(err);
496}
497
498static int mthca_destroy_srq(struct ib_srq *srq)
499{
500 struct mthca_ucontext *context;
501
502 if (srq->uobject) {
503 context = to_mucontext(srq->uobject->context);
504
505 mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
506 context->db_tab, to_msrq(srq)->db_index);
507 }
508
509 mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
510 kfree(srq);
511
512 return 0;
513}
514
1da177e4 515static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
1cf296b6
RD		 516 struct ib_qp_init_attr *init_attr,
517 struct ib_udata *udata)
1da177e4 518{
80c8ec2c 519 struct mthca_create_qp ucmd;
1da177e4
LT		 520 struct mthca_qp *qp;
521 int err;
522
523 switch (init_attr->qp_type) {
524 case IB_QPT_RC:
525 case IB_QPT_UC:
526 case IB_QPT_UD:
527 {
80c8ec2c
RD		 528 struct mthca_ucontext *context;
529
1da177e4
LT		 530 qp = kmalloc(sizeof *qp, GFP_KERNEL);
531 if (!qp)
532 return ERR_PTR(-ENOMEM);
533
80c8ec2c
RD		 534 if (pd->uobject) {
535 context = to_mucontext(pd->uobject->context);
536
537 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
538 return ERR_PTR(-EFAULT);
539
540 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
541 context->db_tab,
542 ucmd.sq_db_index, ucmd.sq_db_page);
543 if (err) {
544 kfree(qp);
545 return ERR_PTR(err);
546 }
547
548 err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
549 context->db_tab,
550 ucmd.rq_db_index, ucmd.rq_db_page);
551 if (err) {
552 mthca_unmap_user_db(to_mdev(pd->device),
553 &context->uar,
554 context->db_tab,
555 ucmd.sq_db_index);
556 kfree(qp);
557 return ERR_PTR(err);
558 }
559
560 qp->mr.ibmr.lkey = ucmd.lkey;
561 qp->sq.db_index = ucmd.sq_db_index;
562 qp->rq.db_index = ucmd.rq_db_index;
563 }
1da177e4
LT		 564
565 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
566 to_mcq(init_attr->send_cq),
567 to_mcq(init_attr->recv_cq),
568 init_attr->qp_type, init_attr->sq_sig_type,
80c8ec2c
RD		 569 &init_attr->cap, qp);
570
571 if (err && pd->uobject) {
572 context = to_mucontext(pd->uobject->context);
573
574 mthca_unmap_user_db(to_mdev(pd->device),
575 &context->uar,
576 context->db_tab,
577 ucmd.sq_db_index);
578 mthca_unmap_user_db(to_mdev(pd->device),
579 &context->uar,
580 context->db_tab,
581 ucmd.rq_db_index);
582 }
583
1da177e4
LT		 584 qp->ibqp.qp_num = qp->qpn;
585 break;
586 }
587 case IB_QPT_SMI:
588 case IB_QPT_GSI:
589 {
80c8ec2c
RD		 590 /* Don't allow userspace to create special QPs */
591 if (pd->uobject)
592 return ERR_PTR(-EINVAL);
593
1da177e4
LT		 594 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
595 if (!qp)
596 return ERR_PTR(-ENOMEM);
597
1da177e4
LT		 598 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
599
600 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
601 to_mcq(init_attr->send_cq),
602 to_mcq(init_attr->recv_cq),
80c8ec2c 603 init_attr->sq_sig_type, &init_attr->cap,
1da177e4
LT		 604 qp->ibqp.qp_num, init_attr->port_num,
605 to_msqp(qp));
606 break;
607 }
608 default:
609 /* Don't support raw QPs */
610 return ERR_PTR(-ENOSYS);
611 }
612
613 if (err) {
614 kfree(qp);
615 return ERR_PTR(err);
616 }
617
80c8ec2c
RD		 618 init_attr->cap.max_inline_data = 0;
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;
1da177e4
LT		 623
624 return &qp->ibqp;
625}
626
627static int mthca_destroy_qp(struct ib_qp *qp)
628{
80c8ec2c
RD		 629 if (qp->uobject) {
630 mthca_unmap_user_db(to_mdev(qp->device),
631 &to_mucontext(qp->uobject->context)->uar,
632 to_mucontext(qp->uobject->context)->db_tab,
633 to_mqp(qp)->sq.db_index);
634 mthca_unmap_user_db(to_mdev(qp->device),
635 &to_mucontext(qp->uobject->context)->uar,
636 to_mucontext(qp->uobject->context)->db_tab,
637 to_mqp(qp)->rq.db_index);
638 }
1da177e4
LT		 639 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
640 kfree(qp);
641 return 0;
642}
643
1cf296b6
RD		 644static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries,
645 struct ib_ucontext *context,
646 struct ib_udata *udata)
1da177e4 647{
74c2174e 648 struct mthca_create_cq ucmd;
1da177e4
LT		 649 struct mthca_cq *cq;
650 int nent;
651 int err;
652
efaae8f7
JM		 653 if (entries < 1 || entries > to_mdev(ibdev)->limits.max_cqes)
654 return ERR_PTR(-EINVAL);
655
74c2174e
RD		 656 if (context) {
657 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
658 return ERR_PTR(-EFAULT);
659
660 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
661 to_mucontext(context)->db_tab,
662 ucmd.set_db_index, ucmd.set_db_page);
663 if (err)
664 return ERR_PTR(err);
665
666 err = mthca_map_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
667 to_mucontext(context)->db_tab,
668 ucmd.arm_db_index, ucmd.arm_db_page);
669 if (err)
670 goto err_unmap_set;
671 }
672
1da177e4 673 cq = kmalloc(sizeof *cq, GFP_KERNEL);
74c2174e
RD		 674 if (!cq) {
675 err = -ENOMEM;
676 goto err_unmap_arm;
677 }
678
679 if (context) {
680 cq->mr.ibmr.lkey = ucmd.lkey;
681 cq->set_ci_db_index = ucmd.set_db_index;
682 cq->arm_db_index = ucmd.arm_db_index;
683 }
1da177e4
LT		 684
685 for (nent = 1; nent <= entries; nent <<= 1)
686 ; /* nothing */
687
74c2174e
RD		 688 err = mthca_init_cq(to_mdev(ibdev), nent,
689 context ? to_mucontext(context) : NULL,
690 context ? ucmd.pdn : to_mdev(ibdev)->driver_pd.pd_num,
691 cq);
692 if (err)
693 goto err_free;
694
695 if (context && ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
696 mthca_free_cq(to_mdev(ibdev), cq);
697 goto err_free;
1da177e4
LT		 698 }
699
700 return &cq->ibcq;
74c2174e
RD		 701
702err_free:
703 kfree(cq);
704
705err_unmap_arm:
706 if (context)
707 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
708 to_mucontext(context)->db_tab, ucmd.arm_db_index);
709
710err_unmap_set:
711 if (context)
712 mthca_unmap_user_db(to_mdev(ibdev), &to_mucontext(context)->uar,
713 to_mucontext(context)->db_tab, ucmd.set_db_index);
714
715 return ERR_PTR(err);
1da177e4
LT		 716}
717
718static int mthca_destroy_cq(struct ib_cq *cq)
719{
74c2174e
RD		 720 if (cq->uobject) {
721 mthca_unmap_user_db(to_mdev(cq->device),
722 &to_mucontext(cq->uobject->context)->uar,
723 to_mucontext(cq->uobject->context)->db_tab,
724 to_mcq(cq)->arm_db_index);
725 mthca_unmap_user_db(to_mdev(cq->device),
726 &to_mucontext(cq->uobject->context)->uar,
727 to_mucontext(cq->uobject->context)->db_tab,
728 to_mcq(cq)->set_ci_db_index);
729 }
1da177e4
LT		 730 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
731 kfree(cq);
732
733 return 0;
734}
735
736static inline u32 convert_access(int acc)
737{
738 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
739 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
740 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
741 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
742 MTHCA_MPT_FLAG_LOCAL_READ;
743}
744
745static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
746{
747 struct mthca_mr *mr;
748 int err;
749
750 mr = kmalloc(sizeof *mr, GFP_KERNEL);
751 if (!mr)
752 return ERR_PTR(-ENOMEM);
753
754 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
755 to_mpd(pd)->pd_num,
756 convert_access(acc), mr);
757
758 if (err) {
759 kfree(mr);
760 return ERR_PTR(err);
761 }
762
763 return &mr->ibmr;
764}
765
766static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
767 struct ib_phys_buf *buffer_list,
768 int num_phys_buf,
769 int acc,
770 u64 *iova_start)
771{
772 struct mthca_mr *mr;
773 u64 *page_list;
774 u64 total_size;
775 u64 mask;
776 int shift;
777 int npages;
778 int err;
779 int i, j, n;
780
781 /* First check that we have enough alignment */
782 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
783 return ERR_PTR(-EINVAL);
784
785 if (num_phys_buf > 1 &&
786 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK))
787 return ERR_PTR(-EINVAL);
788
789 mask = 0;
790 total_size = 0;
791 for (i = 0; i < num_phys_buf; ++i) {
72c30290 792 if (i != 0 && buffer_list[i].addr & ~PAGE_MASK)
1da177e4
LT		 793 return ERR_PTR(-EINVAL);
794 if (i != 0 && i != num_phys_buf - 1 &&
795 (buffer_list[i].size & ~PAGE_MASK))
796 return ERR_PTR(-EINVAL);
797
798 total_size += buffer_list[i].size;
799 if (i > 0)
800 mask |= buffer_list[i].addr;
801 }
802
803 /* Find largest page shift we can use to cover buffers */
804 for (shift = PAGE_SHIFT; shift < 31; ++shift)
805 if (num_phys_buf > 1) {
806 if ((1ULL << shift) & mask)
807 break;
808 } else {
809 if (1ULL << shift >=
810 buffer_list[0].size +
811 (buffer_list[0].addr & ((1ULL << shift) - 1)))
812 break;
813 }
814
815 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
816 buffer_list[0].addr &= ~0ull << shift;
817
818 mr = kmalloc(sizeof *mr, GFP_KERNEL);
819 if (!mr)
820 return ERR_PTR(-ENOMEM);
821
822 npages = 0;
823 for (i = 0; i < num_phys_buf; ++i)
824 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
825
826 if (!npages)
827 return &mr->ibmr;
828
829 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
830 if (!page_list) {
831 kfree(mr);
832 return ERR_PTR(-ENOMEM);
833 }
834
835 n = 0;
836 for (i = 0; i < num_phys_buf; ++i)
837 for (j = 0;
838 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
839 ++j)
840 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
841
842 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
843 "in PD %x; shift %d, npages %d.\n",
844 (unsigned long long) buffer_list[0].addr,
845 (unsigned long long) *iova_start,
846 to_mpd(pd)->pd_num,
847 shift, npages);
848
849 err = mthca_mr_alloc_phys(to_mdev(pd->device),
850 to_mpd(pd)->pd_num,
851 page_list, shift, npages,
852 *iova_start, total_size,
853 convert_access(acc), mr);
854
855 if (err) {
761f9eb8 856 kfree(page_list);
1da177e4
LT		 857 kfree(mr);
858 return ERR_PTR(err);
859 }
860
861 kfree(page_list);
862 return &mr->ibmr;
863}
864
24d4281b
RD		 865static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
866 int acc, struct ib_udata *udata)
867{
868 struct mthca_dev *dev = to_mdev(pd->device);
869 struct ib_umem_chunk *chunk;
870 struct mthca_mr *mr;
871 u64 *pages;
872 int shift, n, len;
873 int i, j, k;
874 int err = 0;
875
876 shift = ffs(region->page_size) - 1;
877
878 mr = kmalloc(sizeof *mr, GFP_KERNEL);
879 if (!mr)
880 return ERR_PTR(-ENOMEM);
881
882 n = 0;
883 list_for_each_entry(chunk, &region->chunk_list, list)
884 n += chunk->nents;
885
886 mr->mtt = mthca_alloc_mtt(dev, n);
887 if (IS_ERR(mr->mtt)) {
888 err = PTR_ERR(mr->mtt);
889 goto err;
890 }
891
892 pages = (u64 *) __get_free_page(GFP_KERNEL);
893 if (!pages) {
894 err = -ENOMEM;
895 goto err_mtt;
896 }
897
898 i = n = 0;
899
900 list_for_each_entry(chunk, &region->chunk_list, list)
901 for (j = 0; j < chunk->nmap; ++j) {
902 len = sg_dma_len(&chunk->page_list[j]) >> shift;
903 for (k = 0; k < len; ++k) {
904 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
905 region->page_size * k;
906 /*
907 * Be friendly to WRITE_MTT command
908 * and leave two empty slots for the
909 * index and reserved fields of the
910 * mailbox.
911 */
912 if (i == PAGE_SIZE / sizeof (u64) - 2) {
913 err = mthca_write_mtt(dev, mr->mtt,
914 n, pages, i);
915 if (err)
916 goto mtt_done;
917 n += i;
918 i = 0;
919 }
920 }
921 }
922
923 if (i)
924 err = mthca_write_mtt(dev, mr->mtt, n, pages, i);
925mtt_done:
926 free_page((unsigned long) pages);
927 if (err)
928 goto err_mtt;
929
930 err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
931 region->length, convert_access(acc), mr);
932
933 if (err)
934 goto err_mtt;
935
936 return &mr->ibmr;
937
938err_mtt:
939 mthca_free_mtt(dev, mr->mtt);
940
941err:
942 kfree(mr);
943 return ERR_PTR(err);
944}
945
1da177e4
LT		 946static int mthca_dereg_mr(struct ib_mr *mr)
947{
e464b2a6
RD		 948 struct mthca_mr *mmr = to_mmr(mr);
949 mthca_free_mr(to_mdev(mr->device), mmr);
950 kfree(mmr);
1da177e4
LT		 951 return 0;
952}
953
e0f5fdca
MT		 954static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
955 struct ib_fmr_attr *fmr_attr)
956{
957 struct mthca_fmr *fmr;
958 int err;
959
960 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
961 if (!fmr)
962 return ERR_PTR(-ENOMEM);
963
964 memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
965 err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
966 convert_access(mr_access_flags), fmr);
967
968 if (err) {
969 kfree(fmr);
970 return ERR_PTR(err);
971 }
972
973 return &fmr->ibmr;
974}
975
976static int mthca_dealloc_fmr(struct ib_fmr *fmr)
977{
978 struct mthca_fmr *mfmr = to_mfmr(fmr);
979 int err;
980
981 err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
982 if (err)
983 return err;
984
985 kfree(mfmr);
986 return 0;
987}
988
989static int mthca_unmap_fmr(struct list_head *fmr_list)
990{
991 struct ib_fmr *fmr;
992 int err;
993 u8 status;
994 struct mthca_dev *mdev = NULL;
995
996 list_for_each_entry(fmr, fmr_list, list) {
997 if (mdev && to_mdev(fmr->device) != mdev)
998 return -EINVAL;
999 mdev = to_mdev(fmr->device);
1000 }
1001
1002 if (!mdev)
1003 return 0;
1004
d10ddbf6 1005 if (mthca_is_memfree(mdev)) {
e0f5fdca
MT		 1006 list_for_each_entry(fmr, fmr_list, list)
1007 mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
1008
1009 wmb();
1010 } else
1011 list_for_each_entry(fmr, fmr_list, list)
1012 mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
1013
1014 err = mthca_SYNC_TPT(mdev, &status);
1015 if (err)
1016 return err;
1017 if (status)
1018 return -EINVAL;
1019 return 0;
1020}
1021
1da177e4
LT		 1022static ssize_t show_rev(struct class_device *cdev, char *buf)
1023{
1024 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1025 return sprintf(buf, "%x\n", dev->rev_id);
1026}
1027
1028static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
1029{
1030 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
87cfe323 1031 return sprintf(buf, "%d.%d.%d\n", (int) (dev->fw_ver >> 32),
1da177e4
LT		 1032 (int) (dev->fw_ver >> 16) & 0xffff,
1033 (int) dev->fw_ver & 0xffff);
1034}
1035
1036static ssize_t show_hca(struct class_device *cdev, char *buf)
1037{
1038 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
68a3c212
RD		 1039 switch (dev->pdev->device) {
1040 case PCI_DEVICE_ID_MELLANOX_TAVOR:
1041 return sprintf(buf, "MT23108\n");
1042 case PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT:
1043 return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
1044 case PCI_DEVICE_ID_MELLANOX_ARBEL:
1045 return sprintf(buf, "MT25208\n");
1046 case PCI_DEVICE_ID_MELLANOX_SINAI:
1047 case PCI_DEVICE_ID_MELLANOX_SINAI_OLD:
1048 return sprintf(buf, "MT25204\n");
1049 default:
1050 return sprintf(buf, "unknown\n");
1da177e4
LT		 1051 }
1052}
1053
2e8b981c
MT		 1054static ssize_t show_board(struct class_device *cdev, char *buf)
1055{
1056 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
1057 return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
1058}
1059
1da177e4
LT		 1060static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1061static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1062static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2e8b981c 1063static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1da177e4
LT		 1064
1065static struct class_device_attribute *mthca_class_attributes[] = {
1066 &class_device_attr_hw_rev,
1067 &class_device_attr_fw_ver,
2e8b981c
MT		 1068 &class_device_attr_hca_type,
1069 &class_device_attr_board_id
1da177e4
LT		 1070};
1071
1072int mthca_register_device(struct mthca_dev *dev)
1073{
1074 int ret;
1075 int i;
1076
1077 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
1cf296b6
RD		 1078 dev->ib_dev.owner = THIS_MODULE;
1079
274c0891 1080 dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION;
883a99c7
RD		 1081 dev->ib_dev.uverbs_cmd_mask =
1082 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1083 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1084 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1085 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1086 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1087 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1088 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1089 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1090 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1091 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1092 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1093 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1094 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1095 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1096 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1097 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1098 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1099 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
1da177e4
LT		 1100 dev->ib_dev.node_type = IB_NODE_CA;
1101 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
1102 dev->ib_dev.dma_device = &dev->pdev->dev;
1103 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
1104 dev->ib_dev.query_device = mthca_query_device;
1105 dev->ib_dev.query_port = mthca_query_port;
1106 dev->ib_dev.modify_port = mthca_modify_port;
1107 dev->ib_dev.query_pkey = mthca_query_pkey;
1108 dev->ib_dev.query_gid = mthca_query_gid;
5e0b537c
RD		 1109 dev->ib_dev.alloc_ucontext = mthca_alloc_ucontext;
1110 dev->ib_dev.dealloc_ucontext = mthca_dealloc_ucontext;
53b8b3ff 1111 dev->ib_dev.mmap = mthca_mmap_uar;
1da177e4
LT		 1112 dev->ib_dev.alloc_pd = mthca_alloc_pd;
1113 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
1114 dev->ib_dev.create_ah = mthca_ah_create;
1115 dev->ib_dev.destroy_ah = mthca_ah_destroy;
ec34a922
RD		 1116
1117 if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
1118 dev->ib_dev.create_srq = mthca_create_srq;
90f104da 1119 dev->ib_dev.modify_srq = mthca_modify_srq;
ec34a922
RD		 1120 dev->ib_dev.destroy_srq = mthca_destroy_srq;
1121
1122 if (mthca_is_memfree(dev))
1123 dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
1124 else
1125 dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
1126 }
1127
1da177e4
LT		 1128 dev->ib_dev.create_qp = mthca_create_qp;
1129 dev->ib_dev.modify_qp = mthca_modify_qp;
1130 dev->ib_dev.destroy_qp = mthca_destroy_qp;
1131 dev->ib_dev.create_cq = mthca_create_cq;
1132 dev->ib_dev.destroy_cq = mthca_destroy_cq;
1133 dev->ib_dev.poll_cq = mthca_poll_cq;
1134 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
1135 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
24d4281b 1136 dev->ib_dev.reg_user_mr = mthca_reg_user_mr;
1da177e4 1137 dev->ib_dev.dereg_mr = mthca_dereg_mr;
e0f5fdca
MT		 1138
1139 if (dev->mthca_flags & MTHCA_FLAG_FMR) {
1140 dev->ib_dev.alloc_fmr = mthca_alloc_fmr;
1141 dev->ib_dev.unmap_fmr = mthca_unmap_fmr;
1142 dev->ib_dev.dealloc_fmr = mthca_dealloc_fmr;
d10ddbf6 1143 if (mthca_is_memfree(dev))
e0f5fdca
MT		 1144 dev->ib_dev.map_phys_fmr = mthca_arbel_map_phys_fmr;
1145 else
1146 dev->ib_dev.map_phys_fmr = mthca_tavor_map_phys_fmr;
1147 }
1148
1da177e4
LT		 1149 dev->ib_dev.attach_mcast = mthca_multicast_attach;
1150 dev->ib_dev.detach_mcast = mthca_multicast_detach;
1151 dev->ib_dev.process_mad = mthca_process_mad;
1152
d10ddbf6 1153 if (mthca_is_memfree(dev)) {
1da177e4
LT		 1154 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
1155 dev->ib_dev.post_send = mthca_arbel_post_send;
1156 dev->ib_dev.post_recv = mthca_arbel_post_receive;
1157 } else {
1158 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
1159 dev->ib_dev.post_send = mthca_tavor_post_send;
1160 dev->ib_dev.post_recv = mthca_tavor_post_receive;
1161 }
1162
1163 init_MUTEX(&dev->cap_mask_mutex);
1164
1165 ret = ib_register_device(&dev->ib_dev);
1166 if (ret)
1167 return ret;
1168
1169 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
1170 ret = class_device_create_file(&dev->ib_dev.class_dev,
1171 mthca_class_attributes[i]);
1172 if (ret) {
1173 ib_unregister_device(&dev->ib_dev);
1174 return ret;
1175 }
1176 }
1177
3d155f8c
RD		 1178 mthca_start_catas_poll(dev);
1179
1da177e4
LT		 1180 return 0;
1181}
1182
1183void mthca_unregister_device(struct mthca_dev *dev)
1184{
3d155f8c 1185 mthca_stop_catas_poll(dev);
1da177e4
LT		 1186 ib_unregister_device(&dev->ib_dev);
1187}
Linux 6.x block layer and io_uring tree(s)