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