1 /*
2 * Copyright(c) 2016 - 2018 Intel Corporation.
3 *
4 * This file is provided under a dual BSD/GPLv2 license. When using or
5 * redistributing this file, you may do so under either license.
6 *
7 * GPL LICENSE SUMMARY
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * BSD LICENSE
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 *
24 * - Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * - Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
29 * distribution.
30 * - Neither the name of Intel Corporation nor the names of its
31 * contributors may be used to endorse or promote products derived
32 * from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 *
46 */
47
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/dma-mapping.h>
51 #include "vt.h"
52 #include "cq.h"
53 #include "trace.h"
54
55 #define RVT_UVERBS_ABI_VERSION 2
56
57 MODULE_LICENSE("Dual BSD/GPL");
58 MODULE_DESCRIPTION("RDMA Verbs Transport Library");
59
rvt_init(void)60 static int rvt_init(void)
61 {
62 int ret = rvt_driver_cq_init();
63
64 if (ret)
65 pr_err("Error in driver CQ init.\n");
66
67 return ret;
68 }
69 module_init(rvt_init);
70
rvt_cleanup(void)71 static void rvt_cleanup(void)
72 {
73 rvt_cq_exit();
74 }
75 module_exit(rvt_cleanup);
76
77 /**
78 * rvt_alloc_device - allocate rdi
79 * @size: how big of a structure to allocate
80 * @nports: number of ports to allocate array slots for
81 *
82 * Use IB core device alloc to allocate space for the rdi which is assumed to be
83 * inside of the ib_device. Any extra space that drivers require should be
84 * included in size.
85 *
86 * We also allocate a port array based on the number of ports.
87 *
88 * Return: pointer to allocated rdi
89 */
rvt_alloc_device(size_t size,int nports)90 struct rvt_dev_info *rvt_alloc_device(size_t size, int nports)
91 {
92 struct rvt_dev_info *rdi;
93
94 rdi = container_of(_ib_alloc_device(size), struct rvt_dev_info, ibdev);
95 if (!rdi)
96 return rdi;
97
98 rdi->ports = kcalloc(nports, sizeof(*rdi->ports), GFP_KERNEL);
99 if (!rdi->ports)
100 ib_dealloc_device(&rdi->ibdev);
101
102 return rdi;
103 }
104 EXPORT_SYMBOL(rvt_alloc_device);
105
106 /**
107 * rvt_dealloc_device - deallocate rdi
108 * @rdi: structure to free
109 *
110 * Free a structure allocated with rvt_alloc_device()
111 */
rvt_dealloc_device(struct rvt_dev_info * rdi)112 void rvt_dealloc_device(struct rvt_dev_info *rdi)
113 {
114 kfree(rdi->ports);
115 ib_dealloc_device(&rdi->ibdev);
116 }
117 EXPORT_SYMBOL(rvt_dealloc_device);
118
rvt_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)119 static int rvt_query_device(struct ib_device *ibdev,
120 struct ib_device_attr *props,
121 struct ib_udata *uhw)
122 {
123 struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
124
125 if (uhw->inlen || uhw->outlen)
126 return -EINVAL;
127 /*
128 * Return rvt_dev_info.dparms.props contents
129 */
130 *props = rdi->dparms.props;
131 return 0;
132 }
133
rvt_modify_device(struct ib_device * device,int device_modify_mask,struct ib_device_modify * device_modify)134 static int rvt_modify_device(struct ib_device *device,
135 int device_modify_mask,
136 struct ib_device_modify *device_modify)
137 {
138 /*
139 * There is currently no need to supply this based on qib and hfi1.
140 * Future drivers may need to implement this though.
141 */
142
143 return -EOPNOTSUPP;
144 }
145
146 /**
147 * rvt_query_port: Passes the query port call to the driver
148 * @ibdev: Verbs IB dev
149 * @port_num: port number, 1 based from ib core
150 * @props: structure to hold returned properties
151 *
152 * Return: 0 on success
153 */
rvt_query_port(struct ib_device * ibdev,u8 port_num,struct ib_port_attr * props)154 static int rvt_query_port(struct ib_device *ibdev, u8 port_num,
155 struct ib_port_attr *props)
156 {
157 struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
158 struct rvt_ibport *rvp;
159 int port_index = ibport_num_to_idx(ibdev, port_num);
160
161 if (port_index < 0)
162 return -EINVAL;
163
164 rvp = rdi->ports[port_index];
165 /* props being zeroed by the caller, avoid zeroing it here */
166 props->sm_lid = rvp->sm_lid;
167 props->sm_sl = rvp->sm_sl;
168 props->port_cap_flags = rvp->port_cap_flags;
169 props->max_msg_sz = 0x80000000;
170 props->pkey_tbl_len = rvt_get_npkeys(rdi);
171 props->bad_pkey_cntr = rvp->pkey_violations;
172 props->qkey_viol_cntr = rvp->qkey_violations;
173 props->subnet_timeout = rvp->subnet_timeout;
174 props->init_type_reply = 0;
175
176 /* Populate the remaining ib_port_attr elements */
177 return rdi->driver_f.query_port_state(rdi, port_num, props);
178 }
179
180 /**
181 * rvt_modify_port
182 * @ibdev: Verbs IB dev
183 * @port_num: Port number, 1 based from ib core
184 * @port_modify_mask: How to change the port
185 * @props: Structure to fill in
186 *
187 * Return: 0 on success
188 */
rvt_modify_port(struct ib_device * ibdev,u8 port_num,int port_modify_mask,struct ib_port_modify * props)189 static int rvt_modify_port(struct ib_device *ibdev, u8 port_num,
190 int port_modify_mask, struct ib_port_modify *props)
191 {
192 struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
193 struct rvt_ibport *rvp;
194 int ret = 0;
195 int port_index = ibport_num_to_idx(ibdev, port_num);
196
197 if (port_index < 0)
198 return -EINVAL;
199
200 rvp = rdi->ports[port_index];
201 if (port_modify_mask & IB_PORT_OPA_MASK_CHG) {
202 rvp->port_cap3_flags |= props->set_port_cap_mask;
203 rvp->port_cap3_flags &= ~props->clr_port_cap_mask;
204 } else {
205 rvp->port_cap_flags |= props->set_port_cap_mask;
206 rvp->port_cap_flags &= ~props->clr_port_cap_mask;
207 }
208
209 if (props->set_port_cap_mask || props->clr_port_cap_mask)
210 rdi->driver_f.cap_mask_chg(rdi, port_num);
211 if (port_modify_mask & IB_PORT_SHUTDOWN)
212 ret = rdi->driver_f.shut_down_port(rdi, port_num);
213 if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR)
214 rvp->qkey_violations = 0;
215
216 return ret;
217 }
218
219 /**
220 * rvt_query_pkey - Return a pkey from the table at a given index
221 * @ibdev: Verbs IB dev
222 * @port_num: Port number, 1 based from ib core
223 * @index: Index into pkey table
224 * @pkey: returned pkey from the port pkey table
225 *
226 * Return: 0 on failure pkey otherwise
227 */
rvt_query_pkey(struct ib_device * ibdev,u8 port_num,u16 index,u16 * pkey)228 static int rvt_query_pkey(struct ib_device *ibdev, u8 port_num, u16 index,
229 u16 *pkey)
230 {
231 /*
232 * Driver will be responsible for keeping rvt_dev_info.pkey_table up to
233 * date. This function will just return that value. There is no need to
234 * lock, if a stale value is read and sent to the user so be it there is
235 * no way to protect against that anyway.
236 */
237 struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
238 int port_index;
239
240 port_index = ibport_num_to_idx(ibdev, port_num);
241 if (port_index < 0)
242 return -EINVAL;
243
244 if (index >= rvt_get_npkeys(rdi))
245 return -EINVAL;
246
247 *pkey = rvt_get_pkey(rdi, port_index, index);
248 return 0;
249 }
250
251 /**
252 * rvt_query_gid - Return a gid from the table
253 * @ibdev: Verbs IB dev
254 * @port_num: Port number, 1 based from ib core
255 * @guid_index: Index in table
256 * @gid: Gid to return
257 *
258 * Return: 0 on success
259 */
rvt_query_gid(struct ib_device * ibdev,u8 port_num,int guid_index,union ib_gid * gid)260 static int rvt_query_gid(struct ib_device *ibdev, u8 port_num,
261 int guid_index, union ib_gid *gid)
262 {
263 struct rvt_dev_info *rdi;
264 struct rvt_ibport *rvp;
265 int port_index;
266
267 /*
268 * Driver is responsible for updating the guid table. Which will be used
269 * to craft the return value. This will work similar to how query_pkey()
270 * is being done.
271 */
272 port_index = ibport_num_to_idx(ibdev, port_num);
273 if (port_index < 0)
274 return -EINVAL;
275
276 rdi = ib_to_rvt(ibdev);
277 rvp = rdi->ports[port_index];
278
279 gid->global.subnet_prefix = rvp->gid_prefix;
280
281 return rdi->driver_f.get_guid_be(rdi, rvp, guid_index,
282 &gid->global.interface_id);
283 }
284
285 /**
286 * rvt_alloc_ucontext - Allocate a user context
287 * @uctx: Verbs context
288 * @udata: User data allocated
289 */
rvt_alloc_ucontext(struct ib_ucontext * uctx,struct ib_udata * udata)290 static int rvt_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
291 {
292 return 0;
293 }
294
295 /**
296 * rvt_dealloc_ucontext - Free a user context
297 * @context - Free this
298 */
rvt_dealloc_ucontext(struct ib_ucontext * context)299 static void rvt_dealloc_ucontext(struct ib_ucontext *context)
300 {
301 return;
302 }
303
rvt_get_port_immutable(struct ib_device * ibdev,u8 port_num,struct ib_port_immutable * immutable)304 static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num,
305 struct ib_port_immutable *immutable)
306 {
307 struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
308 struct ib_port_attr attr;
309 int err, port_index;
310
311 port_index = ibport_num_to_idx(ibdev, port_num);
312 if (port_index < 0)
313 return -EINVAL;
314
315 immutable->core_cap_flags = rdi->dparms.core_cap_flags;
316
317 err = ib_query_port(ibdev, port_num, &attr);
318 if (err)
319 return err;
320
321 immutable->pkey_tbl_len = attr.pkey_tbl_len;
322 immutable->gid_tbl_len = attr.gid_tbl_len;
323 immutable->max_mad_size = rdi->dparms.max_mad_size;
324
325 return 0;
326 }
327
328 enum {
329 MISC,
330 QUERY_DEVICE,
331 MODIFY_DEVICE,
332 QUERY_PORT,
333 MODIFY_PORT,
334 QUERY_PKEY,
335 QUERY_GID,
336 ALLOC_UCONTEXT,
337 DEALLOC_UCONTEXT,
338 GET_PORT_IMMUTABLE,
339 CREATE_QP,
340 MODIFY_QP,
341 DESTROY_QP,
342 QUERY_QP,
343 POST_SEND,
344 POST_RECV,
345 POST_SRQ_RECV,
346 CREATE_AH,
347 DESTROY_AH,
348 MODIFY_AH,
349 QUERY_AH,
350 CREATE_SRQ,
351 MODIFY_SRQ,
352 DESTROY_SRQ,
353 QUERY_SRQ,
354 ATTACH_MCAST,
355 DETACH_MCAST,
356 GET_DMA_MR,
357 REG_USER_MR,
358 DEREG_MR,
359 ALLOC_MR,
360 MAP_MR_SG,
361 ALLOC_FMR,
362 MAP_PHYS_FMR,
363 UNMAP_FMR,
364 DEALLOC_FMR,
365 MMAP,
366 CREATE_CQ,
367 DESTROY_CQ,
368 POLL_CQ,
369 REQ_NOTFIY_CQ,
370 RESIZE_CQ,
371 ALLOC_PD,
372 DEALLOC_PD,
373 _VERB_IDX_MAX /* Must always be last! */
374 };
375
376 static const struct ib_device_ops rvt_dev_ops = {
377 .uverbs_abi_ver = RVT_UVERBS_ABI_VERSION,
378
379 .alloc_mr = rvt_alloc_mr,
380 .alloc_pd = rvt_alloc_pd,
381 .alloc_ucontext = rvt_alloc_ucontext,
382 .attach_mcast = rvt_attach_mcast,
383 .create_ah = rvt_create_ah,
384 .create_cq = rvt_create_cq,
385 .create_qp = rvt_create_qp,
386 .create_srq = rvt_create_srq,
387 .dealloc_pd = rvt_dealloc_pd,
388 .dealloc_ucontext = rvt_dealloc_ucontext,
389 .dereg_mr = rvt_dereg_mr,
390 .destroy_ah = rvt_destroy_ah,
391 .destroy_cq = rvt_destroy_cq,
392 .destroy_qp = rvt_destroy_qp,
393 .destroy_srq = rvt_destroy_srq,
394 .detach_mcast = rvt_detach_mcast,
395 .get_dma_mr = rvt_get_dma_mr,
396 .get_port_immutable = rvt_get_port_immutable,
397 .map_mr_sg = rvt_map_mr_sg,
398 .mmap = rvt_mmap,
399 .modify_ah = rvt_modify_ah,
400 .modify_device = rvt_modify_device,
401 .modify_port = rvt_modify_port,
402 .modify_qp = rvt_modify_qp,
403 .modify_srq = rvt_modify_srq,
404 .poll_cq = rvt_poll_cq,
405 .post_recv = rvt_post_recv,
406 .post_send = rvt_post_send,
407 .post_srq_recv = rvt_post_srq_recv,
408 .query_ah = rvt_query_ah,
409 .query_device = rvt_query_device,
410 .query_gid = rvt_query_gid,
411 .query_pkey = rvt_query_pkey,
412 .query_port = rvt_query_port,
413 .query_qp = rvt_query_qp,
414 .query_srq = rvt_query_srq,
415 .reg_user_mr = rvt_reg_user_mr,
416 .req_notify_cq = rvt_req_notify_cq,
417 .resize_cq = rvt_resize_cq,
418
419 INIT_RDMA_OBJ_SIZE(ib_ah, rvt_ah, ibah),
420 INIT_RDMA_OBJ_SIZE(ib_cq, rvt_cq, ibcq),
421 INIT_RDMA_OBJ_SIZE(ib_pd, rvt_pd, ibpd),
422 INIT_RDMA_OBJ_SIZE(ib_srq, rvt_srq, ibsrq),
423 INIT_RDMA_OBJ_SIZE(ib_ucontext, rvt_ucontext, ibucontext),
424 };
425
check_support(struct rvt_dev_info * rdi,int verb)426 static noinline int check_support(struct rvt_dev_info *rdi, int verb)
427 {
428 switch (verb) {
429 case MISC:
430 /*
431 * These functions are not part of verbs specifically but are
432 * required for rdmavt to function.
433 */
434 if ((!rdi->ibdev.ops.init_port) ||
435 (!rdi->driver_f.get_pci_dev))
436 return -EINVAL;
437 break;
438
439 case MODIFY_DEVICE:
440 /*
441 * rdmavt does not support modify device currently drivers must
442 * provide.
443 */
444 if (!rdi->ibdev.ops.modify_device)
445 return -EOPNOTSUPP;
446 break;
447
448 case QUERY_PORT:
449 if (!rdi->ibdev.ops.query_port)
450 if (!rdi->driver_f.query_port_state)
451 return -EINVAL;
452 break;
453
454 case MODIFY_PORT:
455 if (!rdi->ibdev.ops.modify_port)
456 if (!rdi->driver_f.cap_mask_chg ||
457 !rdi->driver_f.shut_down_port)
458 return -EINVAL;
459 break;
460
461 case QUERY_GID:
462 if (!rdi->ibdev.ops.query_gid)
463 if (!rdi->driver_f.get_guid_be)
464 return -EINVAL;
465 break;
466
467 case CREATE_QP:
468 if (!rdi->ibdev.ops.create_qp)
469 if (!rdi->driver_f.qp_priv_alloc ||
470 !rdi->driver_f.qp_priv_free ||
471 !rdi->driver_f.notify_qp_reset ||
472 !rdi->driver_f.flush_qp_waiters ||
473 !rdi->driver_f.stop_send_queue ||
474 !rdi->driver_f.quiesce_qp)
475 return -EINVAL;
476 break;
477
478 case MODIFY_QP:
479 if (!rdi->ibdev.ops.modify_qp)
480 if (!rdi->driver_f.notify_qp_reset ||
481 !rdi->driver_f.schedule_send ||
482 !rdi->driver_f.get_pmtu_from_attr ||
483 !rdi->driver_f.flush_qp_waiters ||
484 !rdi->driver_f.stop_send_queue ||
485 !rdi->driver_f.quiesce_qp ||
486 !rdi->driver_f.notify_error_qp ||
487 !rdi->driver_f.mtu_from_qp ||
488 !rdi->driver_f.mtu_to_path_mtu)
489 return -EINVAL;
490 break;
491
492 case DESTROY_QP:
493 if (!rdi->ibdev.ops.destroy_qp)
494 if (!rdi->driver_f.qp_priv_free ||
495 !rdi->driver_f.notify_qp_reset ||
496 !rdi->driver_f.flush_qp_waiters ||
497 !rdi->driver_f.stop_send_queue ||
498 !rdi->driver_f.quiesce_qp)
499 return -EINVAL;
500 break;
501
502 case POST_SEND:
503 if (!rdi->ibdev.ops.post_send)
504 if (!rdi->driver_f.schedule_send ||
505 !rdi->driver_f.do_send ||
506 !rdi->post_parms)
507 return -EINVAL;
508 break;
509
510 }
511
512 return 0;
513 }
514
515 /**
516 * rvt_register_device - register a driver
517 * @rdi: main dev structure for all of rdmavt operations
518 *
519 * It is up to drivers to allocate the rdi and fill in the appropriate
520 * information.
521 *
522 * Return: 0 on success otherwise an errno.
523 */
rvt_register_device(struct rvt_dev_info * rdi)524 int rvt_register_device(struct rvt_dev_info *rdi)
525 {
526 int ret = 0, i;
527 u64 dma_mask;
528
529 if (!rdi)
530 return -EINVAL;
531
532 /*
533 * Check to ensure drivers have setup the required helpers for the verbs
534 * they want rdmavt to handle
535 */
536 for (i = 0; i < _VERB_IDX_MAX; i++)
537 if (check_support(rdi, i)) {
538 pr_err("Driver support req not met at %d\n", i);
539 return -EINVAL;
540 }
541
542 ib_set_device_ops(&rdi->ibdev, &rvt_dev_ops);
543
544 /* Once we get past here we can use rvt_pr macros and tracepoints */
545 trace_rvt_dbg(rdi, "Driver attempting registration");
546 rvt_mmap_init(rdi);
547
548 /* Queue Pairs */
549 ret = rvt_driver_qp_init(rdi);
550 if (ret) {
551 pr_err("Error in driver QP init.\n");
552 return -EINVAL;
553 }
554
555 /* Address Handle */
556 spin_lock_init(&rdi->n_ahs_lock);
557 rdi->n_ahs_allocated = 0;
558
559 /* Shared Receive Queue */
560 rvt_driver_srq_init(rdi);
561
562 /* Multicast */
563 rvt_driver_mcast_init(rdi);
564
565 /* Mem Region */
566 ret = rvt_driver_mr_init(rdi);
567 if (ret) {
568 pr_err("Error in driver MR init.\n");
569 goto bail_no_mr;
570 }
571
572 /* Memory Working Set Size */
573 ret = rvt_wss_init(rdi);
574 if (ret) {
575 rvt_pr_err(rdi, "Error in WSS init.\n");
576 goto bail_mr;
577 }
578
579 /* Completion queues */
580 spin_lock_init(&rdi->n_cqs_lock);
581
582 /* DMA Operations */
583 rdi->ibdev.dev.dma_parms = rdi->ibdev.dev.parent->dma_parms;
584 dma_mask = IS_ENABLED(CONFIG_64BIT) ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32);
585 ret = dma_coerce_mask_and_coherent(&rdi->ibdev.dev, dma_mask);
586 if (ret)
587 goto bail_wss;
588
589 /* Protection Domain */
590 spin_lock_init(&rdi->n_pds_lock);
591 rdi->n_pds_allocated = 0;
592
593 /*
594 * There are some things which could be set by underlying drivers but
595 * really should be up to rdmavt to set. For instance drivers can't know
596 * exactly which functions rdmavt supports, nor do they know the ABI
597 * version, so we do all of this sort of stuff here.
598 */
599 rdi->ibdev.uverbs_cmd_mask =
600 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
601 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
602 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
603 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
604 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
605 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
606 (1ull << IB_USER_VERBS_CMD_MODIFY_AH) |
607 (1ull << IB_USER_VERBS_CMD_QUERY_AH) |
608 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
609 (1ull << IB_USER_VERBS_CMD_REG_MR) |
610 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
611 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
612 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
613 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
614 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
615 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
616 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
617 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
618 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
619 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
620 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
621 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
622 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
623 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
624 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
625 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
626 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
627 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
628 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
629 (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV);
630 rdi->ibdev.node_type = RDMA_NODE_IB_CA;
631 if (!rdi->ibdev.num_comp_vectors)
632 rdi->ibdev.num_comp_vectors = 1;
633
634 /* We are now good to announce we exist */
635 ret = ib_register_device(&rdi->ibdev, dev_name(&rdi->ibdev.dev), NULL);
636 if (ret) {
637 rvt_pr_err(rdi, "Failed to register driver with ib core.\n");
638 goto bail_wss;
639 }
640
641 rvt_create_mad_agents(rdi);
642
643 rvt_pr_info(rdi, "Registration with rdmavt done.\n");
644 return ret;
645
646 bail_wss:
647 rvt_wss_exit(rdi);
648 bail_mr:
649 rvt_mr_exit(rdi);
650
651 bail_no_mr:
652 rvt_qp_exit(rdi);
653
654 return ret;
655 }
656 EXPORT_SYMBOL(rvt_register_device);
657
658 /**
659 * rvt_unregister_device - remove a driver
660 * @rdi: rvt dev struct
661 */
rvt_unregister_device(struct rvt_dev_info * rdi)662 void rvt_unregister_device(struct rvt_dev_info *rdi)
663 {
664 trace_rvt_dbg(rdi, "Driver is unregistering.");
665 if (!rdi)
666 return;
667
668 rvt_free_mad_agents(rdi);
669
670 ib_unregister_device(&rdi->ibdev);
671 rvt_wss_exit(rdi);
672 rvt_mr_exit(rdi);
673 rvt_qp_exit(rdi);
674 }
675 EXPORT_SYMBOL(rvt_unregister_device);
676
677 /**
678 * rvt_init_port - init internal data for driver port
679 * @rdi: rvt_dev_info struct
680 * @port: rvt port
681 * @port_index: 0 based index of ports, different from IB core port num
682 * @pkey_table: pkey_table for @port
683 *
684 * Keep track of a list of ports. No need to have a detach port.
685 * They persist until the driver goes away.
686 *
687 * Return: always 0
688 */
rvt_init_port(struct rvt_dev_info * rdi,struct rvt_ibport * port,int port_index,u16 * pkey_table)689 int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port,
690 int port_index, u16 *pkey_table)
691 {
692
693 rdi->ports[port_index] = port;
694 rdi->ports[port_index]->pkey_table = pkey_table;
695
696 return 0;
697 }
698 EXPORT_SYMBOL(rvt_init_port);
699
