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Merge remote-tracking branch 'origin/master'
[unleashed/lotheac.git] / usr / src / uts / common / io / ib / mgt / ibdma / ibdma.c
blobcac6f4668c1d8a6d5af6b3aff3b68971456d2309
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 /*
27 * Infiniband Device Management Agent for IB storage.
28 */
29
30 #include <sys/conf.h>
31 #include <sys/file.h>
32 #include <sys/ddi.h>
33 #include <sys/sunddi.h>
34 #include <sys/modctl.h>
35 #include <sys/priv.h>
36 #include <sys/sysmacros.h>
37
38 #include <sys/ib/ibtl/ibti.h> /* IB public interfaces */
39
40 #include <sys/ib/mgt/ibdma/ibdma.h>
41 #include <sys/ib/mgt/ibdma/ibdma_impl.h>
42
43 /*
44 * NOTE: The IB Device Management Agent function, like other IB
45 * managers and agents is best implemented as a kernel misc.
46 * module.
47 * Eventually we could modify IBT_DM_AGENT so that we don't need to
48 * open each HCA to receive asynchronous events.
49 */
50
51 #define IBDMA_NAME_VERSION "IB Device Management Agent"
52
53 extern struct mod_ops mod_miscops;
54
55 static void ibdma_ibt_async_handler(void *clnt, ibt_hca_hdl_t hdl,
56 ibt_async_code_t code, ibt_async_event_t *event);
57
58 static void ibdma_mad_recv_cb(ibmf_handle_t ibmf_hdl,
59 ibmf_msg_t *msgp, void *args);
60 static void ibdma_create_resp_mad(ibmf_msg_t *msgp);
61
62 /*
63 * Misc. kernel module for now.
64 */
65 static struct modlmisc modlmisc = {
66 &mod_miscops,
67 IBDMA_NAME_VERSION
68 };
69
70 static struct modlinkage modlinkage = {
71 MODREV_1, (void *)&modlmisc, NULL
72 };
73
74 static ibt_clnt_modinfo_t ibdma_ibt_modinfo = {
75 IBTI_V_CURR,
76 IBT_DM_AGENT,
77 ibdma_ibt_async_handler,
78 NULL,
79 "ibdma"
80 };
81
82 /*
83 * Module global state allocated at init().
84 */
85 static ibdma_mod_state_t *ibdma = NULL;
86
87 /*
88 * Init/Fini handlers and IBTL HCA management prototypes.
89 */
90 static int ibdma_init();
91 static int ibdma_fini();
92 static int ibdma_ibt_init();
93 static void ibdma_ibt_fini();
94 static ibdma_hca_t *ibdma_hca_init(ib_guid_t guid);
95 static void ibdma_hca_fini(ibdma_hca_t *hca);
96 static ibdma_hca_t *ibdma_find_hca(ib_guid_t guid);
97
98 /*
99 * DevMgmt Agent MAD attribute handlers prototypes.
100 */
101 static void ibdma_get_class_portinfo(ibmf_msg_t *msg);
102 static void ibdma_get_io_unitinfo(ibdma_hca_t *hca, ibmf_msg_t *msg);
103 static void ibdma_get_ioc_profile(ibdma_hca_t *hca, ibmf_msg_t *msg);
104 static void ibdma_get_ioc_services(ibdma_hca_t *hca, ibmf_msg_t *msg);
105
106 /*
107 * _init()
108 */
109 int
110 _init(void)
111 {
112 int status;
113
114 ASSERT(ibdma == NULL);
115
116 ibdma = kmem_zalloc(sizeof (*ibdma), KM_SLEEP);
117 ASSERT(ibdma != NULL);
118
119 status = ibdma_init();
120 if (status != DDI_SUCCESS) {
121 kmem_free(ibdma, sizeof (*ibdma));
122 ibdma = NULL;
123 return (status);
124 }
125
126 status = mod_install(&modlinkage);
127 if (status != DDI_SUCCESS) {
128 cmn_err(CE_NOTE, "_init, mod_install error (%d)", status);
129 (void) ibdma_fini();
130 kmem_free(ibdma, sizeof (*ibdma));
131 ibdma = NULL;
132 }
133 return (status);
134 }
135
136 /*
137 * _info()
138 */
139 int
140 _info(struct modinfo *modinfop)
141 {
142 return (mod_info(&modlinkage, modinfop));
143 }
144
145 /*
146 * _fini()
147 */
148 int
149 _fini(void)
150 {
151 int status;
152 int slot;
153 ibdma_hca_t *hca;
154
155 status = mod_remove(&modlinkage);
156 if (status != DDI_SUCCESS) {
157 cmn_err(CE_NOTE, "_fini, mod_remove error (%d)", status);
158 return (status);
159 }
160
161 /*
162 * Sanity check to see if anyone is not cleaning
163 * up appropriately.
164 */
165 mutex_enter(&ibdma->ms_hca_list_lock);
166 hca = list_head(&ibdma->ms_hca_list);
167 while (hca != NULL) {
168 for (slot = 0; slot < IBDMA_MAX_IOC; slot++) {
169 if (hca->ih_ioc[slot].ii_inuse) {
170 cmn_err(CE_NOTE, "_fini, IOC %d still attached"
171 " for (0x%0llx)", slot+1,
172 (u_longlong_t)hca->ih_iou_guid);
173 }
174 }
175 hca = list_next(&ibdma->ms_hca_list, hca);
176 }
177 mutex_exit(&ibdma->ms_hca_list_lock);
178
179 (void) ibdma_fini();
180 kmem_free(ibdma, sizeof (*ibdma));
181 return (status);
182 }
183
184 /*
185 * ibdma_init()
186 *
187 * Initialize I/O Unit structure, generate initial HCA list and register
188 * it port with the IBMF.
189 */
190 static int
191 ibdma_init()
192 {
193 int status;
194
195 /*
196 * Global lock and I/O Unit initialization.
197 */
198 mutex_init(&ibdma->ms_hca_list_lock, NULL, MUTEX_DRIVER, NULL);
199
200 /*
201 * Discover IB hardware and setup for device management agent
202 * support.
203 */
204 status = ibdma_ibt_init();
205 if (status != DDI_SUCCESS) {
206 cmn_err(CE_NOTE, "ibdma_init, ibt_attach failed (%d)",
207 status);
208 mutex_destroy(&ibdma->ms_hca_list_lock);
209 return (status);
210 }
211
212 return (status);
213 }
214
215 /*
216 * ibdma_fini()
217 *
218 * Release resource if we are no longer in use.
219 */
220 static int
221 ibdma_fini()
222 {
223 ibdma_ibt_fini();
224 mutex_destroy(&ibdma->ms_hca_list_lock);
225 return (DDI_SUCCESS);
226 }
227
228 /*
229 * ibdma_ibt_async_handler()
230 */
231 /* ARGSUSED */
232 static void
233 ibdma_ibt_async_handler(void *clnt, ibt_hca_hdl_t hdl,
234 ibt_async_code_t code, ibt_async_event_t *event)
235 {
236 ibdma_hca_t *hca;
237
238 switch (code) {
239
240 case IBT_EVENT_PORT_UP:
241 case IBT_ERROR_PORT_DOWN:
242 case IBT_PORT_CHANGE_EVENT:
243 case IBT_CLNT_REREG_EVENT:
244 break;
245
246 case IBT_HCA_ATTACH_EVENT:
247 mutex_enter(&ibdma->ms_hca_list_lock);
248 hca = ibdma_hca_init(event->ev_hca_guid);
249 if (hca != NULL) {
250 list_insert_tail(&ibdma->ms_hca_list, hca);
251 cmn_err(CE_NOTE, "hca ibt hdl (%p)",
252 (void *)hca->ih_ibt_hdl);
253 ibdma->ms_num_hcas++;
254 }
255 mutex_exit(&ibdma->ms_hca_list_lock);
256 break;
257
258 case IBT_HCA_DETACH_EVENT:
259 mutex_enter(&ibdma->ms_hca_list_lock);
260 hca = ibdma_find_hca(event->ev_hca_guid);
261 if (hca != NULL) {
262 list_remove(&ibdma->ms_hca_list, hca);
263 cmn_err(CE_NOTE, "removing hca (%p) (0x%llx)",
264 (void *)hca, hca ?
265 (u_longlong_t)hca->ih_iou_guid : 0x0ll);
266 ibdma_hca_fini(hca);
267 }
268 mutex_exit(&ibdma->ms_hca_list_lock);
269 break;
270
271 default:
272 #ifdef DEBUG
273 cmn_err(CE_NOTE, "ibt_async_handler, unhandled event(%d)",
274 code);
275 #endif
276 break;
277 }
278
279 }
280
281 /*
282 * ibdma_ibt_init()
283 */
284 static int
285 ibdma_ibt_init()
286 {
287 int status;
288 int hca_cnt;
289 int hca_ndx;
290 ib_guid_t *guid;
291 ibdma_hca_t *hca;
292
293 /*
294 * Attach to IBTF and get HCA list.
295 */
296 status = ibt_attach(&ibdma_ibt_modinfo, NULL,
297 ibdma, &ibdma->ms_ibt_hdl);
298 if (status != DDI_SUCCESS) {
299 cmn_err(CE_NOTE, "ibt_init, ibt_attach failed (%d)",
300 status);
301 return (status);
302 }
303
304 list_create(&ibdma->ms_hca_list, sizeof (ibdma_hca_t),
305 offsetof(ibdma_hca_t, ih_node));
306
307 hca_cnt = ibt_get_hca_list(&guid);
308 if (hca_cnt < 1) {
309 #ifdef DEBUG_IBDMA
310 cmn_err(CE_NOTE, "ibt_init, no HCA(s) found");
311 #endif
312 /* not an error if no HCAs, but nothing more to do here */
313 return (DDI_SUCCESS);
314 }
315
316 mutex_enter(&ibdma->ms_hca_list_lock);
317
318 for (hca_ndx = 0; hca_ndx < hca_cnt; hca_ndx++) {
319 #ifdef DEBUG_IBDMA
320 cmn_err(CE_NOTE, "adding hca GUID(0x%llx)",
321 (u_longlong_t)guid[hca_ndx]);
322 #endif
323
324 hca = ibdma_hca_init(guid[hca_ndx]);
325 if (hca == NULL) {
326 cmn_err(CE_NOTE, "ibt_init, hca_init GUID(0x%llx)"
327 " failed", (u_longlong_t)guid[hca_ndx]);
328 continue;
329 }
330 list_insert_tail(&ibdma->ms_hca_list, hca);
331 ibdma->ms_num_hcas++;
332 }
333
334 mutex_exit(&ibdma->ms_hca_list_lock);
335
336 ibt_free_hca_list(guid, hca_cnt);
337 #ifdef DEBUG_IBDMA
338 cmn_err(CE_NOTE, "Added %d HCA(s)",
339 ibdma->ms_num_hcas);
340 #endif
341 return (DDI_SUCCESS);
342 }
343
344 /*
345 * ibdma_ibt_fini()
346 */
347 static void
348 ibdma_ibt_fini()
349 {
350 ibdma_hca_t *hca;
351 ibdma_hca_t *next;
352
353 mutex_enter(&ibdma->ms_hca_list_lock);
354 hca = list_head(&ibdma->ms_hca_list);
355 while (hca != NULL) {
356 next = list_next(&ibdma->ms_hca_list, hca);
357 list_remove(&ibdma->ms_hca_list, hca);
358 #ifdef DEBUG_IBDMA
359 cmn_err(CE_NOTE, "removing hca (%p) (0x%llx)",
360 (void *)hca, hca ?
361 (u_longlong_t)hca->ih_iou_guid : 0x0ll);
362 cmn_err(CE_NOTE, "hca ibt hdl (%p)",
363 (void *)hca->ih_ibt_hdl);
364 #endif
365 ibdma_hca_fini(hca);
366 hca = next;
367 }
368 list_destroy(&ibdma->ms_hca_list);
369
370 (void) ibt_detach(ibdma->ms_ibt_hdl);
371 ibdma->ms_ibt_hdl = NULL;
372 ibdma->ms_num_hcas = 0;
373 mutex_exit(&ibdma->ms_hca_list_lock);
374 }
375
376 /*
377 * ibdma_find_hca()
378 */
379 static ibdma_hca_t *
380 ibdma_find_hca(ib_guid_t guid)
381 {
382 ibdma_hca_t *hca;
383
384 ASSERT(mutex_owned(&ibdma->ms_hca_list_lock));
385
386 hca = list_head(&ibdma->ms_hca_list);
387 while (hca != NULL) {
388 if (hca->ih_iou_guid == guid) {
389 break;
390 }
391 hca = list_next(&ibdma->ms_hca_list, hca);
392 }
393 return (hca);
394 }
395
396 /*
397 * ibdma_hca_init()
398 */
399 static ibdma_hca_t *
400 ibdma_hca_init(ib_guid_t guid)
401 {
402 ibt_status_t status;
403 ibdma_hca_t *hca;
404 ibdma_port_t *port;
405 ibt_hca_attr_t hca_attr;
406 int ndx;
407
408 ASSERT(mutex_owned(&ibdma->ms_hca_list_lock));
409
410 status = ibt_query_hca_byguid(guid, &hca_attr);
411 if (status != IBT_SUCCESS) {
412 cmn_err(CE_NOTE, "hca_init HCA query error (%d)",
413 status);
414 return (NULL);
415 }
416
417 if (ibdma_find_hca(guid) != NULL) {
418 #ifdef DEBUG_IBDMA
419 cmn_err(CE_NOTE, "hca_init HCA already exists");
420 #endif
421 return (NULL);
422 }
423
424 hca = kmem_zalloc(sizeof (ibdma_hca_t) +
425 (hca_attr.hca_nports-1)*sizeof (ibdma_port_t), KM_SLEEP);
426 ASSERT(hca != NULL);
427
428 hca->ih_nports = hca_attr.hca_nports;
429
430 rw_init(&hca->ih_iou_rwlock, NULL, RW_DRIVER, NULL);
431 rw_enter(&hca->ih_iou_rwlock, RW_WRITER);
432 hca->ih_iou_guid = guid;
433 hca->ih_iou.iou_changeid = h2b16(1);
434 hca->ih_iou.iou_num_ctrl_slots = IBDMA_MAX_IOC;
435 hca->ih_iou.iou_flag = IB_DM_IOU_OPTIONROM_ABSENT;
436
437 list_create(&hca->ih_hdl_list, sizeof (ibdma_hdl_impl_t),
438 offsetof(ibdma_hdl_impl_t, ih_node));
439 rw_exit(&hca->ih_iou_rwlock);
440
441 /*
442 * It would be better to not open, but IBTL is setup to only allow
443 * certain managers to get async call backs if not open.
444 */
445 status = ibt_open_hca(ibdma->ms_ibt_hdl, guid, &hca->ih_ibt_hdl);
446 if (status != IBT_SUCCESS) {
447 cmn_err(CE_NOTE, "hca_init() IBT open failed (%d)",
448 status);
449
450 list_destroy(&hca->ih_hdl_list);
451 rw_destroy(&hca->ih_iou_rwlock);
452 kmem_free(hca, sizeof (ibdma_hca_t) +
453 (hca_attr.hca_nports-1)*sizeof (ibdma_port_t));
454 return (NULL);
455 }
456
457 /*
458 * Register with the IB Management Framework and setup MAD call-back.
459 */
460 for (ndx = 0; ndx < hca->ih_nports; ndx++) {
461 port = &hca->ih_port[ndx];
462 port->ip_hcap = hca;
463 port->ip_ibmf_reg.ir_ci_guid = hca->ih_iou_guid;
464 port->ip_ibmf_reg.ir_port_num = ndx + 1;
465 port->ip_ibmf_reg.ir_client_class = DEV_MGT_AGENT;
466
467 status = ibmf_register(&port->ip_ibmf_reg, IBMF_VERSION,
468 0, NULL, NULL, &port->ip_ibmf_hdl, &port->ip_ibmf_caps);
469 if (status != IBMF_SUCCESS) {
470 cmn_err(CE_NOTE, "hca_init, IBMF register failed (%d)",
471 status);
472 port->ip_ibmf_hdl = NULL;
473 ibdma_hca_fini(hca);
474 return (NULL);
475 }
476
477 status = ibmf_setup_async_cb(port->ip_ibmf_hdl,
478 IBMF_QP_HANDLE_DEFAULT, ibdma_mad_recv_cb, port, 0);
479 if (status != IBMF_SUCCESS) {
480 cmn_err(CE_NOTE, "hca_init, IBMF cb setup failed (%d)",
481 status);
482 ibdma_hca_fini(hca);
483 return (NULL);
484 }
485
486 status = ibt_modify_port_byguid(hca->ih_iou_guid,
487 ndx+1, IBT_PORT_SET_DEVMGT, 0);
488 if (status != IBT_SUCCESS) {
489 cmn_err(CE_NOTE, "hca_init, IBT modify port caps"
490 " error (%d)", status);
491 ibdma_hca_fini(hca);
492 return (NULL);
493 }
494 }
495 return (hca);
496 }
497
498 /*
499 * ibdma_hca_fini()
500 */
501 static void
502 ibdma_hca_fini(ibdma_hca_t *hca)
503 {
504 int status;
505 int ndx;
506 ibdma_port_t *port;
507 ibdma_hdl_impl_t *hdl;
508 ibdma_hdl_impl_t *hdl_next;
509
510 ASSERT(mutex_owned(&ibdma->ms_hca_list_lock));
511 ASSERT(hca != NULL);
512
513 rw_enter(&hca->ih_iou_rwlock, RW_WRITER);
514
515 /*
516 * All handles should have been de-registered, but release
517 * any that are outstanding.
518 */
519 hdl = list_head(&hca->ih_hdl_list);
520 while (hdl != NULL) {
521 hdl_next = list_next(&hca->ih_hdl_list, hdl);
522 list_remove(&hca->ih_hdl_list, hdl);
523 cmn_err(CE_NOTE, "hca_fini, unexpected ibdma user handle"
524 " exists");
525 kmem_free(hdl, sizeof (*hdl));
526 hdl = hdl_next;
527 }
528 list_destroy(&hca->ih_hdl_list);
529
530 /*
531 * Un-register with the IBMF.
532 */
533 for (ndx = 0; ndx < hca->ih_nports; ndx++) {
534 port = &hca->ih_port[ndx];
535 port->ip_hcap = NULL;
536
537 status = ibt_modify_port_byguid(hca->ih_iou_guid,
538 ndx+1, IBT_PORT_RESET_DEVMGT, 0);
539 if (status != IBT_SUCCESS)
540 cmn_err(CE_NOTE, "hca_fini, IBT modify port caps"
541 " error (%d)", status);
542
543 if (port->ip_ibmf_hdl == NULL)
544 continue;
545
546 status = ibmf_tear_down_async_cb(port->ip_ibmf_hdl,
547 IBMF_QP_HANDLE_DEFAULT, 0);
548 if (status != IBMF_SUCCESS)
549 cmn_err(CE_NOTE, "hca_fini, IBMF tear down cb"
550 " error (%d)", status);
551
552 status = ibmf_unregister(&port->ip_ibmf_hdl, 0);
553 if (status != IBMF_SUCCESS)
554 cmn_err(CE_NOTE, "hca_fini, IBMF un-register"
555 " error (%d)", status);
556 port->ip_ibmf_hdl = NULL;
557 }
558
559 status = ibt_close_hca(hca->ih_ibt_hdl);
560 if (status != IBT_SUCCESS)
561 cmn_err(CE_NOTE, "hca_fini close error (%d)", status);
562
563 rw_exit(&hca->ih_iou_rwlock);
564 rw_destroy(&hca->ih_iou_rwlock);
565 kmem_free(hca, sizeof (ibdma_hca_t) +
566 (hca->ih_nports-1) * sizeof (ibdma_port_t));
567 }
568
569 /* DM IBMF MAD handlers */
570 /*
571 * ibdma_create_resp_mad()
572 */
573 static void
574 ibdma_create_resp_mad(ibmf_msg_t *msgp)
575 {
576 /*
577 * Allocate send buffer fix up hdr for response.
578 */
579 msgp->im_msgbufs_send.im_bufs_mad_hdr =
580 kmem_zalloc(IBDMA_MAD_SIZE, KM_SLEEP);
581
582 msgp->im_msgbufs_send.im_bufs_cl_hdr = (uchar_t *)
583 msgp->im_msgbufs_send.im_bufs_mad_hdr + sizeof (ib_mad_hdr_t);
584 msgp->im_msgbufs_send.im_bufs_cl_hdr_len = IBDMA_DM_MAD_HDR_SIZE;
585 msgp->im_msgbufs_send.im_bufs_cl_data =
586 ((char *)msgp->im_msgbufs_send.im_bufs_cl_hdr +
587 IBDMA_DM_MAD_HDR_SIZE);
588 msgp->im_msgbufs_send.im_bufs_cl_data_len =
589 IBDMA_MAD_SIZE - sizeof (ib_mad_hdr_t) - IBDMA_DM_MAD_HDR_SIZE;
590 (void) memcpy(msgp->im_msgbufs_send.im_bufs_mad_hdr,
591 msgp->im_msgbufs_recv.im_bufs_mad_hdr, IBDMA_MAD_SIZE);
592
593 /*
594 * We may want to support a GRH since this is a GMP; not
595 * required for current SRP device manager platforms.
596 */
597 #if 0
598 if (msgp->im_msg_flags & IBMF_MSG_FLAGS_GLOBAL_ADDRESS) {
599 ib_gid_t temp = msgp->im_global_addr.ig_recver_gid;
600
601 msgp->im_global_addr.ig_recver_gid =
602 msgp->im_global_addr.ig_sender_gid;
603 msgp->im_global_addr.ig_sender_gid = temp;
604 }
605 #endif
606 }
607
608 /*
609 * ibdma_mad_send_cb()
610 */
611 /* ARGSUSED */
612 static void
613 ibdma_mad_send_cb(ibmf_handle_t ibmf_hdl, ibmf_msg_t *msgp, void *arg)
614 {
615 /*
616 * Just free the buffers and release the message.
617 */
618 if (msgp->im_msgbufs_send.im_bufs_mad_hdr != NULL) {
619 kmem_free(msgp->im_msgbufs_send.im_bufs_mad_hdr,
620 IBDMA_MAD_SIZE);
621 msgp->im_msgbufs_send.im_bufs_mad_hdr = NULL;
622 }
623 if (ibmf_free_msg(ibmf_hdl, &msgp) != IBMF_SUCCESS) {
624 cmn_err(CE_NOTE, "mad_send_cb, IBMF message free error");
625 }
626 }
627
628 /*
629 * ibdma_mad_recv_cb()
630 */
631 static void
632 ibdma_mad_recv_cb(ibmf_handle_t ibmf_hdl, ibmf_msg_t *msgp, void *args)
633 {
634 int status;
635 ib_mad_hdr_t *in_mad;
636 ib_mad_hdr_t *out_mad;
637 ibdma_port_t *port = args;
638
639 ASSERT(msgp != NULL);
640 ASSERT(port != NULL);
641
642 if (msgp->im_msg_status != IBMF_SUCCESS) {
643 cmn_err(CE_NOTE, "mad_recv_cb, bad MAD receive status (%d)",
644 msgp->im_msg_status);
645 goto drop;
646 }
647
648 in_mad = msgp->im_msgbufs_recv.im_bufs_mad_hdr;
649
650 if (in_mad->MgmtClass != MAD_MGMT_CLASS_DEV_MGT) {
651 #ifdef DEBUG_IBDMA
652 cmn_err(CE_NOTE, "mad_recv_cb, MAD not of Dev Mgmt Class");
653 #endif
654 goto drop;
655 }
656
657 ibdma_create_resp_mad(msgp);
658 out_mad = msgp->im_msgbufs_send.im_bufs_mad_hdr;
659
660 out_mad->R_Method = IB_DM_DEVMGT_METHOD_GET_RESP;
661 out_mad->Status = 0;
662
663 if (in_mad->R_Method == MAD_METHOD_SET) {
664 #ifdef DEBUG_IBDMA
665 cmn_err(CE_NOTE, "mad_recv_cb, no attributes supported"
666 " for set");
667 #endif
668 out_mad->Status = MAD_STATUS_UNSUPP_METHOD_ATTR;
669 goto send_resp;
670 }
671
672 if (in_mad->R_Method != MAD_METHOD_GET) {
673 #ifdef DEBUG_IBDMA
674 cmn_err(CE_NOTE, "mad_recv_cb, no attributes supported"
675 " for set");
676 #endif
677 out_mad->Status = MAD_STATUS_UNSUPP_METHOD;
678 goto send_resp;
679 }
680
681 /*
682 * Process a GET method.
683 */
684 switch (b2h16(in_mad->AttributeID)) {
685
686 case IB_DM_ATTR_CLASSPORTINFO:
687 ibdma_get_class_portinfo(msgp);
688 break;
689
690 case IB_DM_ATTR_IO_UNITINFO:
691 ibdma_get_io_unitinfo(port->ip_hcap, msgp);
692 break;
693
694 case IB_DM_ATTR_IOC_CTRL_PROFILE:
695 ibdma_get_ioc_profile(port->ip_hcap, msgp);
696 break;
697
698 case IB_DM_ATTR_SERVICE_ENTRIES:
699 ibdma_get_ioc_services(port->ip_hcap, msgp);
700 break;
701
702 default:
703 out_mad->Status = MAD_STATUS_UNSUPP_METHOD_ATTR;
704 break;
705 }
706
707 send_resp:
708 status = ibmf_msg_transport(ibmf_hdl, IBMF_QP_HANDLE_DEFAULT,
709 msgp, NULL, ibdma_mad_send_cb, NULL, 0);
710 if (status != IBMF_SUCCESS) {
711 cmn_err(CE_NOTE, "mad_recv_cb, send error (%d)", status);
712 ibdma_mad_send_cb(ibmf_hdl, msgp, NULL);
713 }
714 return;
715
716 drop:
717 status = ibmf_free_msg(ibmf_hdl, &msgp);
718 if (status != IBMF_SUCCESS) {
719 cmn_err(CE_NOTE, "mad_recv_cb, error dropping (%d)",
720 status);
721 }
722 }
723
724 /*
725 * ibdma_get_class_portinfo()
726 */
727 static void
728 ibdma_get_class_portinfo(ibmf_msg_t *msg)
729 {
730 ib_mad_classportinfo_t *cpip;
731
732 cpip = (ib_mad_classportinfo_t *)msg->im_msgbufs_send.im_bufs_cl_data;
733 bzero(cpip, sizeof (*cpip));
734 cpip->BaseVersion = MAD_CLASS_BASE_VERS_1;
735 cpip->ClassVersion = IB_DM_CLASS_VERSION_1;
736 cpip->RespTimeValue = h2b32(IBDMA_DM_RESP_TIME);
737 }
738
739 /*
740 * ibdma_get_io_unitinfo()
741 */
742 static void
743 ibdma_get_io_unitinfo(ibdma_hca_t *hca, ibmf_msg_t *msg)
744 {
745 ib_dm_io_unitinfo_t *uip;
746
747 uip = (ib_dm_io_unitinfo_t *)msg->im_msgbufs_send.im_bufs_cl_data;
748 rw_enter(&hca->ih_iou_rwlock, RW_READER);
749 bcopy(&hca->ih_iou, uip, sizeof (ib_dm_io_unitinfo_t));
750 rw_exit(&hca->ih_iou_rwlock);
751 }
752
753 /*
754 * ibdma_get_ioc_profile()
755 */
756 static void
757 ibdma_get_ioc_profile(ibdma_hca_t *hca, ibmf_msg_t *msg)
758 {
759 ib_dm_ioc_ctrl_profile_t *iocp;
760 uint32_t slot;
761
762 ASSERT(msg != NULL);
763
764 slot = b2h32(msg->im_msgbufs_recv.im_bufs_mad_hdr->AttributeModifier);
765 iocp = (ib_dm_ioc_ctrl_profile_t *)
766 msg->im_msgbufs_send.im_bufs_cl_data;
767 if (slot == 0 || slot > IBDMA_MAX_IOC) {
768 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
769 MAD_STATUS_INVALID_FIELD;
770 return;
771 }
772
773 slot--;
774 rw_enter(&hca->ih_iou_rwlock, RW_READER);
775 if (ibdma_get_ioc_state(hca, slot) == IBDMA_IOC_PRESENT) {
776 bcopy(&hca->ih_ioc[slot].ii_profile, iocp,
777 sizeof (ib_dm_ioc_ctrl_profile_t));
778 } else {
779 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
780 IB_DM_DEVMGT_MAD_STAT_NORESP;
781 }
782 rw_exit(&hca->ih_iou_rwlock);
783 }
784
785 /*
786 * ibdma_get_ioc_services()
787 */
788 static void
789 ibdma_get_ioc_services(ibdma_hca_t *hca, ibmf_msg_t *msg)
790 {
791 ib_dm_srv_t *to_svcp;
792 ib_dm_srv_t *from_svcp;
793 uint32_t slot;
794 uint8_t hi;
795 uint8_t low;
796
797 ASSERT(msg != NULL);
798
799 slot = b2h32(msg->im_msgbufs_recv.im_bufs_mad_hdr->AttributeModifier);
800 hi = (slot >> 8) & 0x00FF;
801 low = slot & 0x00FF;
802 slot = (slot >> 16) & 0x0FFFF;
803 if (slot == 0 || slot > IBDMA_MAX_IOC) {
804 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
805 MAD_STATUS_INVALID_FIELD;
806 return;
807 }
808
809 slot--;
810
811 rw_enter(&hca->ih_iou_rwlock, RW_READER);
812 if (ibdma_get_ioc_state(hca, slot) != IBDMA_IOC_PRESENT) {
813 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
814 IB_DM_DEVMGT_MAD_STAT_NORESP;
815 rw_exit(&hca->ih_iou_rwlock);
816 return;
817 }
818
819 if ((low > hi) || (hi - low > 4)) {
820 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
821 MAD_STATUS_INVALID_FIELD;
822 rw_exit(&hca->ih_iou_rwlock);
823 return;
824 }
825
826 if (hi > hca->ih_ioc[slot].ii_profile.ioc_service_entries) {
827 msg->im_msgbufs_send.im_bufs_mad_hdr->Status =
828 MAD_STATUS_INVALID_FIELD;
829 rw_exit(&hca->ih_iou_rwlock);
830 return;
831 }
832
833 to_svcp = (ib_dm_srv_t *)msg->im_msgbufs_send.im_bufs_cl_data;
834 from_svcp = hca->ih_ioc[slot].ii_srvcs + low;
835 bcopy(from_svcp, to_svcp, sizeof (ib_dm_srv_t) * (hi - low + 1));
836 rw_exit(&hca->ih_iou_rwlock);
837 }
838
839
840 /*
841 * Client API internal helpers
842 */
843
844 /*
845 * ibdma_hdl_to_ioc()
846 */
847 ibdma_hdl_impl_t *
848 ibdma_get_hdl_impl(ibdma_hdl_t hdl)
849 {
850 ibdma_hca_t *hca;
851 ibdma_hdl_impl_t *hdl_tmp = hdl;
852 ibdma_hdl_impl_t *hdl_impl;
853
854 ASSERT(mutex_owned(&ibdma->ms_hca_list_lock));
855
856 if (hdl_tmp == NULL) {
857 cmn_err(CE_NOTE, "get_hdl_impl, NULL handle");
858 return (NULL);
859 }
860
861 hca = ibdma_find_hca(hdl_tmp->ih_iou_guid);
862 if (hca == NULL) {
863 cmn_err(CE_NOTE, "get_hdl_impl, invalid handle, bad IOU");
864 return (NULL);
865 }
866
867 hdl_impl = list_head(&hca->ih_hdl_list);
868 while (hdl_impl != NULL) {
869 if (hdl_impl == hdl_tmp) {
870 break;
871 }
872 hdl_impl = list_next(&hca->ih_hdl_list, hdl_impl);
873 }
874 return (hdl_impl);
875 }
876
877 /*
878 * ibdma_set_ioc_state()
879 *
880 * slot should be 0 based (not DM 1 based slot).
881 *
882 * I/O Unit write lock should be held outside of this function.
883 */
884 static void
885 ibdma_set_ioc_state(ibdma_hca_t *hca, int slot, ibdma_ioc_state_t state)
886 {
887 uint8_t cur;
888 uint16_t id;
889
890 cur = hca->ih_iou.iou_ctrl_list[slot >> 1];
891 if (slot & 1) {
892 cur = (cur & 0xF0) | state;
893 } else {
894 cur = (cur & 0x0F) | (state << 4);
895 }
896 hca->ih_iou.iou_ctrl_list[slot >> 1] = cur;
897 id = b2h16(hca->ih_iou.iou_changeid);
898 id++;
899 hca->ih_iou.iou_changeid = h2b16(id);
900 #ifdef DEBUG_IBDMA
901 cmn_err(CE_NOTE, "set_ioc_state, slot offset(%d), value(%d)",
902 slot, hca->ih_iou.iou_ctrl_list[slot >> 1]);
903 #endif
904 }
905
906 /*
907 * ibdma_get_ioc_state()
908 *
909 * slot should be 0 based (not DM 1 based slot).
910 *
911 * I/O Unit read lock should be held outside of this function.
912 */
913 static ibdma_ioc_state_t
914 ibdma_get_ioc_state(ibdma_hca_t *hca, int slot)
915 {
916 uint8_t cur;
917
918 if (slot >= IBDMA_MAX_IOC)
919 return (0xFF);
920
921 cur = hca->ih_iou.iou_ctrl_list[slot >> 1];
922 cur = slot & 1 ? cur & 0x0F : cur >> 4;
923 return (cur);
924 }
925
926 /* CLIENT API Implementation */
927 /*
928 * ibdma_ioc_register()
929 *
930 */
931 ibdma_hdl_t
932 ibdma_ioc_register(ib_guid_t iou_guid, ib_dm_ioc_ctrl_profile_t *profile,
933 ib_dm_srv_t *services)
934 {
935 int free_slot = -1;
936 int svc_entries;
937 int slot;
938 ibdma_hca_t *hca;
939 ibdma_hdl_impl_t *hdl;
940
941 if (profile == NULL || services == NULL) {
942 cmn_err(CE_NOTE, "ioc_register, bad parameter");
943 return (NULL);
944 }
945
946 svc_entries = profile->ioc_service_entries;
947 if (svc_entries == 0) {
948 cmn_err(CE_NOTE, "ioc_register, bad profile no service");
949 return (NULL);
950 }
951
952 /*
953 * Find the associated I/O Unit.
954 */
955 mutex_enter(&ibdma->ms_hca_list_lock);
956 hca = ibdma_find_hca(iou_guid);
957 if (hca == NULL) {
958 mutex_exit(&ibdma->ms_hca_list_lock);
959 cmn_err(CE_NOTE, "ioc_register, bad I/O Unit GUID (0x%llx)",
960 (u_longlong_t)iou_guid);
961 return (NULL);
962 }
963
964 rw_enter(&hca->ih_iou_rwlock, RW_WRITER);
965 for (slot = 0; slot < IBDMA_MAX_IOC; slot++) {
966 if (hca->ih_ioc[slot].ii_inuse == 0) {
967 if (free_slot == -1) {
968 free_slot = slot;
969 }
970 continue;
971 }
972
973 if (profile->ioc_guid ==
974 hca->ih_ioc[slot].ii_profile.ioc_guid) {
975 rw_exit(&hca->ih_iou_rwlock);
976 mutex_exit(&ibdma->ms_hca_list_lock);
977 #ifdef DEBUG_IBDMA
978 cmn_err(CE_NOTE, "ioc_register, IOC previously"
979 " registered");
980 #endif
981 return (NULL);
982 }
983 }
984
985 if (free_slot < 0) {
986 rw_exit(&hca->ih_iou_rwlock);
987 cmn_err(CE_NOTE, "ioc_register, error - I/O Unit full");
988 return (NULL);
989 }
990 #ifdef DEBUG_IBDMA
991 cmn_err(CE_NOTE, "ibdma_ioc_register, assigned to 0 based slot (%d)",
992 free_slot);
993 #endif
994
995 hca->ih_ioc[free_slot].ii_inuse = 1;
996 hca->ih_ioc[free_slot].ii_slot = free_slot;
997 hca->ih_ioc[free_slot].ii_hcap = hca;
998
999 /*
1000 * Allocate local copy of profile and services.
1001 */
1002 hca->ih_ioc[free_slot].ii_srvcs =
1003 kmem_zalloc(sizeof (ib_dm_srv_t) * svc_entries, KM_SLEEP);
1004 bcopy(profile, &hca->ih_ioc[free_slot].ii_profile,
1005 sizeof (ib_dm_ioc_ctrl_profile_t));
1006 bcopy(services, hca->ih_ioc[free_slot].ii_srvcs,
1007 sizeof (ib_dm_srv_t) * svc_entries);
1008
1009 /*
1010 * Update the profile copy with the I/O controller slot assigned.
1011 * The slot occupies the lower 8 biths of the vendor ID/slot 32bit
1012 * field.
1013 */
1014 profile->ioc_vendorid |= h2b32(free_slot);
1015
1016 ibdma_set_ioc_state(hca, free_slot, IBDMA_IOC_PRESENT);
1017
1018 hdl = kmem_alloc(sizeof (*hdl), KM_SLEEP);
1019 hdl->ih_iou_guid = hca->ih_iou_guid;
1020 hdl->ih_ioc_ndx = (uint8_t)free_slot;
1021 list_insert_tail(&hca->ih_hdl_list, hdl);
1022
1023 rw_exit(&hca->ih_iou_rwlock);
1024 mutex_exit(&ibdma->ms_hca_list_lock);
1025
1026 return ((ibdma_hdl_t)hdl);
1027 }
1028
1029 /*
1030 * ibdma_ioc_unregister()
1031 *
1032 */
1033 ibdma_status_t
1034 ibdma_ioc_unregister(ibdma_hdl_t hdl)
1035 {
1036 ibdma_ioc_t *ioc;
1037 ibdma_hca_t *hca;
1038 int slot;
1039 ibdma_hdl_impl_t *hdl_tmp = hdl;
1040 ibdma_hdl_impl_t *hdl_impl;
1041
1042 if (hdl == NULL) {
1043 cmn_err(CE_NOTE, "ioc_unregister, NULL handle");
1044 return (IBDMA_BAD_PARAM);
1045 }
1046
1047 mutex_enter(&ibdma->ms_hca_list_lock);
1048 hca = ibdma_find_hca(hdl_tmp->ih_iou_guid);
1049 if (hca == NULL) {
1050 cmn_err(CE_NOTE, "ioc_unregsiter, invalid handle, IOU"
1051 " not found");
1052 mutex_exit(&ibdma->ms_hca_list_lock);
1053 return (IBDMA_BAD_PARAM);
1054 }
1055
1056 hdl_impl = list_head(&hca->ih_hdl_list);
1057 while (hdl_impl != NULL) {
1058 if (hdl_impl == hdl_tmp) {
1059 break;
1060 }
1061 hdl_impl = list_next(&hca->ih_hdl_list, hdl_impl);
1062 }
1063
1064 if (hdl_impl == NULL) {
1065 cmn_err(CE_NOTE, "ioc_unregsiter, invalid handle, not found");
1066 mutex_exit(&ibdma->ms_hca_list_lock);
1067 return (IBDMA_BAD_PARAM);
1068 }
1069
1070 list_remove(&hca->ih_hdl_list, hdl_impl);
1071
1072 if (hdl_impl->ih_ioc_ndx >= IBDMA_MAX_IOC) {
1073 cmn_err(CE_NOTE, "ioc_unregister, corrupted handle");
1074 kmem_free(hdl_impl, sizeof (*hdl_impl));
1075 mutex_exit(&ibdma->ms_hca_list_lock);
1076 return (IBDMA_BAD_PARAM);
1077 }
1078 ioc = &hca->ih_ioc[hdl_impl->ih_ioc_ndx];
1079 kmem_free(hdl_impl, sizeof (*hdl_impl));
1080
1081 if (ioc->ii_slot > IBDMA_MAX_IOC) {
1082 cmn_err(CE_NOTE, "ioc_unregister, IOC corrupted, bad"
1083 " slot in IOC");
1084 mutex_exit(&ibdma->ms_hca_list_lock);
1085 return (IBDMA_BAD_PARAM);
1086 }
1087
1088 rw_enter(&ioc->ii_hcap->ih_iou_rwlock, RW_WRITER);
1089 if (ioc->ii_inuse == 0) {
1090 rw_exit(&ioc->ii_hcap->ih_iou_rwlock);
1091 mutex_exit(&ibdma->ms_hca_list_lock);
1092 cmn_err(CE_NOTE, "ioc_unregister, slot not in use (%d)",
1093 ioc->ii_slot+1);
1094 return (IBDMA_BAD_PARAM);
1095 }
1096
1097 ASSERT(ioc->ii_srvcs != NULL);
1098
1099 slot = ioc->ii_slot;
1100 hca = ioc->ii_hcap;
1101 kmem_free(ioc->ii_srvcs, sizeof (ib_dm_srv_t) *
1102 ioc->ii_profile.ioc_service_entries);
1103 bzero(ioc, sizeof (ibdma_ioc_t));
1104 ibdma_set_ioc_state(hca, slot, IBDMA_IOC_NOT_INSTALLED);
1105
1106 rw_exit(&hca->ih_iou_rwlock);
1107 mutex_exit(&ibdma->ms_hca_list_lock);
1108
1109 return (IBDMA_SUCCESS);
1110 }
1111
1112 /*
1113 * ibdma_ioc_update()
1114 *
1115 */
1116 ibdma_status_t
1117 ibdma_ioc_update(ibdma_hdl_t hdl, ib_dm_ioc_ctrl_profile_t *profile,
1118 ib_dm_srv_t *services)
1119 {
1120 ibdma_ioc_t *ioc;
1121 ibdma_hca_t *hca;
1122 ibdma_hdl_impl_t *hdl_tmp = hdl;
1123 ibdma_hdl_impl_t *hdl_impl;
1124
1125 if (hdl == NULL) {
1126 cmn_err(CE_NOTE, "ioc_update, NULL handle");
1127 return (IBDMA_BAD_PARAM);
1128 }
1129
1130 if (profile == NULL || services == NULL) {
1131 cmn_err(CE_NOTE, "ioc_update, NULL parameter");
1132 return (IBDMA_BAD_PARAM);
1133 }
1134
1135 mutex_enter(&ibdma->ms_hca_list_lock);
1136 hca = ibdma_find_hca(hdl_tmp->ih_iou_guid);
1137 if (hca == NULL) {
1138 cmn_err(CE_NOTE, "ioc_update, invalid handle, IOU not found");
1139 mutex_exit(&ibdma->ms_hca_list_lock);
1140 return (IBDMA_BAD_PARAM);
1141 }
1142
1143 hdl_impl = list_head(&hca->ih_hdl_list);
1144 while (hdl_impl != NULL) {
1145 if (hdl_impl == hdl_tmp) {
1146 break;
1147 }
1148 hdl_impl = list_next(&hca->ih_hdl_list, hdl_impl);
1149 }
1150
1151 if (hdl_impl == NULL) {
1152 cmn_err(CE_NOTE, "ioc_update, invalid handle, not found");
1153 mutex_exit(&ibdma->ms_hca_list_lock);
1154 return (IBDMA_BAD_PARAM);
1155 }
1156
1157 if (hdl_impl->ih_ioc_ndx >= IBDMA_MAX_IOC) {
1158 cmn_err(CE_NOTE, "ioc_update, corrupted handle");
1159 mutex_exit(&ibdma->ms_hca_list_lock);
1160 return (IBDMA_BAD_PARAM);
1161 }
1162 ioc = &hca->ih_ioc[hdl_impl->ih_ioc_ndx];
1163
1164 if (ioc->ii_slot >= IBDMA_MAX_IOC || ioc->ii_hcap == NULL) {
1165 cmn_err(CE_NOTE, "ioc_update, bad handle (%p)",
1166 (void *)hdl);
1167 mutex_exit(&ibdma->ms_hca_list_lock);
1168 return (IBDMA_BAD_PARAM);
1169 }
1170
1171 rw_enter(&ioc->ii_hcap->ih_iou_rwlock, RW_WRITER);
1172 if (ioc->ii_inuse == 0) {
1173 rw_exit(&ioc->ii_hcap->ih_iou_rwlock);
1174 mutex_exit(&ibdma->ms_hca_list_lock);
1175 cmn_err(CE_NOTE, "ioc_udate slot not in use (%d)",
1176 ioc->ii_slot+1);
1177 return (IBDMA_BAD_PARAM);
1178 }
1179
1180 ASSERT(ioc->ii_srvcs != NULL);
1181
1182 kmem_free(ioc->ii_srvcs, ioc->ii_profile.ioc_service_entries *
1183 sizeof (ib_dm_srv_t));
1184 ioc->ii_srvcs = kmem_zalloc(profile->ioc_service_entries *
1185 sizeof (ib_dm_srv_t), KM_SLEEP);
1186
1187 bcopy(profile, &ioc->ii_profile, sizeof (ib_dm_ioc_ctrl_profile_t));
1188 bcopy(services, ioc->ii_srvcs, sizeof (ib_dm_srv_t) *
1189 profile->ioc_service_entries);
1190 /*
1191 * Update the profile copy with the I/O controller slot assigned.
1192 * The slot occupies the lower 8 biths of the vendor ID/slot 32bit
1193 * field.
1194 */
1195 profile->ioc_vendorid |= h2b32(ioc->ii_slot);
1196 ibdma_set_ioc_state(ioc->ii_hcap, ioc->ii_slot, IBDMA_IOC_PRESENT);
1197 rw_exit(&ioc->ii_hcap->ih_iou_rwlock);
1198 mutex_exit(&ibdma->ms_hca_list_lock);
1199
1200 return (IBDMA_SUCCESS);
1201 }