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x86/topology: Fix function name in documentation
[cris-mirror.git] / drivers / infiniband / hw / hfi1 / mad.c
blobe9962c65c68f938326a8daaa89868678f329d130
1 /*
2 * Copyright(c) 2015-2017 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/net.h>
49 #include <rdma/opa_addr.h>
50 #define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \
51 / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16)))
52
53 #include "hfi.h"
54 #include "mad.h"
55 #include "trace.h"
56 #include "qp.h"
57 #include "vnic.h"
58
59 /* the reset value from the FM is supposed to be 0xffff, handle both */
60 #define OPA_LINK_WIDTH_RESET_OLD 0x0fff
61 #define OPA_LINK_WIDTH_RESET 0xffff
62
63 struct trap_node {
64 struct list_head list;
65 struct opa_mad_notice_attr data;
66 __be64 tid;
67 int len;
68 u32 retry;
69 u8 in_use;
70 u8 repress;
71 };
72
73 static int smp_length_check(u32 data_size, u32 request_len)
74 {
75 if (unlikely(request_len < data_size))
76 return -EINVAL;
77
78 return 0;
79 }
80
81 static int reply(struct ib_mad_hdr *smp)
82 {
83 /*
84 * The verbs framework will handle the directed/LID route
85 * packet changes.
86 */
87 smp->method = IB_MGMT_METHOD_GET_RESP;
88 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
89 smp->status |= IB_SMP_DIRECTION;
90 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
91 }
92
93 static inline void clear_opa_smp_data(struct opa_smp *smp)
94 {
95 void *data = opa_get_smp_data(smp);
96 size_t size = opa_get_smp_data_size(smp);
97
98 memset(data, 0, size);
99 }
100
101 static u16 hfi1_lookup_pkey_value(struct hfi1_ibport *ibp, int pkey_idx)
102 {
103 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
104
105 if (pkey_idx < ARRAY_SIZE(ppd->pkeys))
106 return ppd->pkeys[pkey_idx];
107
108 return 0;
109 }
110
111 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u8 port)
112 {
113 struct ib_event event;
114
115 event.event = IB_EVENT_PKEY_CHANGE;
116 event.device = &dd->verbs_dev.rdi.ibdev;
117 event.element.port_num = port;
118 ib_dispatch_event(&event);
119 }
120
121 /*
122 * If the port is down, clean up all pending traps. We need to be careful
123 * with the given trap, because it may be queued.
124 */
125 static void cleanup_traps(struct hfi1_ibport *ibp, struct trap_node *trap)
126 {
127 struct trap_node *node, *q;
128 unsigned long flags;
129 struct list_head trap_list;
130 int i;
131
132 for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
133 spin_lock_irqsave(&ibp->rvp.lock, flags);
134 list_replace_init(&ibp->rvp.trap_lists[i].list, &trap_list);
135 ibp->rvp.trap_lists[i].list_len = 0;
136 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
137
138 /*
139 * Remove all items from the list, freeing all the non-given
140 * traps.
141 */
142 list_for_each_entry_safe(node, q, &trap_list, list) {
143 list_del(&node->list);
144 if (node != trap)
145 kfree(node);
146 }
147 }
148
149 /*
150 * If this wasn't on one of the lists it would not be freed. If it
151 * was on the list, it is now safe to free.
152 */
153 kfree(trap);
154 }
155
156 static struct trap_node *check_and_add_trap(struct hfi1_ibport *ibp,
157 struct trap_node *trap)
158 {
159 struct trap_node *node;
160 struct trap_list *trap_list;
161 unsigned long flags;
162 unsigned long timeout;
163 int found = 0;
164 unsigned int queue_id;
165 static int trap_count;
166
167 queue_id = trap->data.generic_type & 0x0F;
168 if (queue_id >= RVT_MAX_TRAP_LISTS) {
169 trap_count++;
170 pr_err_ratelimited("hfi1: Invalid trap 0x%0x dropped. Total dropped: %d\n",
171 trap->data.generic_type, trap_count);
172 kfree(trap);
173 return NULL;
174 }
175
176 /*
177 * Since the retry (handle timeout) does not remove a trap request
178 * from the list, all we have to do is compare the node.
179 */
180 spin_lock_irqsave(&ibp->rvp.lock, flags);
181 trap_list = &ibp->rvp.trap_lists[queue_id];
182
183 list_for_each_entry(node, &trap_list->list, list) {
184 if (node == trap) {
185 node->retry++;
186 found = 1;
187 break;
188 }
189 }
190
191 /* If it is not on the list, add it, limited to RVT-MAX_TRAP_LEN. */
192 if (!found) {
193 if (trap_list->list_len < RVT_MAX_TRAP_LEN) {
194 trap_list->list_len++;
195 list_add_tail(&trap->list, &trap_list->list);
196 } else {
197 pr_warn_ratelimited("hfi1: Maximum trap limit reached for 0x%0x traps\n",
198 trap->data.generic_type);
199 kfree(trap);
200 }
201 }
202
203 /*
204 * Next check to see if there is a timer pending. If not, set it up
205 * and get the first trap from the list.
206 */
207 node = NULL;
208 if (!timer_pending(&ibp->rvp.trap_timer)) {
209 /*
210 * o14-2
211 * If the time out is set we have to wait until it expires
212 * before the trap can be sent.
213 * This should be > RVT_TRAP_TIMEOUT
214 */
215 timeout = (RVT_TRAP_TIMEOUT *
216 (1UL << ibp->rvp.subnet_timeout)) / 1000;
217 mod_timer(&ibp->rvp.trap_timer,
218 jiffies + usecs_to_jiffies(timeout));
219 node = list_first_entry(&trap_list->list, struct trap_node,
220 list);
221 node->in_use = 1;
222 }
223 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
224
225 return node;
226 }
227
228 static void subn_handle_opa_trap_repress(struct hfi1_ibport *ibp,
229 struct opa_smp *smp)
230 {
231 struct trap_list *trap_list;
232 struct trap_node *trap;
233 unsigned long flags;
234 int i;
235
236 if (smp->attr_id != IB_SMP_ATTR_NOTICE)
237 return;
238
239 spin_lock_irqsave(&ibp->rvp.lock, flags);
240 for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
241 trap_list = &ibp->rvp.trap_lists[i];
242 trap = list_first_entry_or_null(&trap_list->list,
243 struct trap_node, list);
244 if (trap && trap->tid == smp->tid) {
245 if (trap->in_use) {
246 trap->repress = 1;
247 } else {
248 trap_list->list_len--;
249 list_del(&trap->list);
250 kfree(trap);
251 }
252 break;
253 }
254 }
255 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
256 }
257
258 static void hfi1_update_sm_ah_attr(struct hfi1_ibport *ibp,
259 struct rdma_ah_attr *attr, u32 dlid)
260 {
261 rdma_ah_set_dlid(attr, dlid);
262 rdma_ah_set_port_num(attr, ppd_from_ibp(ibp)->port);
263 if (dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
264 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
265
266 rdma_ah_set_ah_flags(attr, IB_AH_GRH);
267 grh->sgid_index = 0;
268 grh->hop_limit = 1;
269 grh->dgid.global.subnet_prefix =
270 ibp->rvp.gid_prefix;
271 grh->dgid.global.interface_id = OPA_MAKE_ID(dlid);
272 }
273 }
274
275 static int hfi1_modify_qp0_ah(struct hfi1_ibport *ibp,
276 struct rvt_ah *ah, u32 dlid)
277 {
278 struct rdma_ah_attr attr;
279 struct rvt_qp *qp0;
280 int ret = -EINVAL;
281
282 memset(&attr, 0, sizeof(attr));
283 attr.type = ah->ibah.type;
284 hfi1_update_sm_ah_attr(ibp, &attr, dlid);
285 rcu_read_lock();
286 qp0 = rcu_dereference(ibp->rvp.qp[0]);
287 if (qp0)
288 ret = rdma_modify_ah(&ah->ibah, &attr);
289 rcu_read_unlock();
290 return ret;
291 }
292
293 static struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u32 dlid)
294 {
295 struct rdma_ah_attr attr;
296 struct ib_ah *ah = ERR_PTR(-EINVAL);
297 struct rvt_qp *qp0;
298 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
299 struct hfi1_devdata *dd = dd_from_ppd(ppd);
300 u8 port_num = ppd->port;
301
302 memset(&attr, 0, sizeof(attr));
303 attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num);
304 hfi1_update_sm_ah_attr(ibp, &attr, dlid);
305 rcu_read_lock();
306 qp0 = rcu_dereference(ibp->rvp.qp[0]);
307 if (qp0)
308 ah = rdma_create_ah(qp0->ibqp.pd, &attr);
309 rcu_read_unlock();
310 return ah;
311 }
312
313 static void send_trap(struct hfi1_ibport *ibp, struct trap_node *trap)
314 {
315 struct ib_mad_send_buf *send_buf;
316 struct ib_mad_agent *agent;
317 struct opa_smp *smp;
318 unsigned long flags;
319 int pkey_idx;
320 u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
321
322 agent = ibp->rvp.send_agent;
323 if (!agent) {
324 cleanup_traps(ibp, trap);
325 return;
326 }
327
328 /* o14-3.2.1 */
329 if (driver_lstate(ppd_from_ibp(ibp)) != IB_PORT_ACTIVE) {
330 cleanup_traps(ibp, trap);
331 return;
332 }
333
334 /* Add the trap to the list if necessary and see if we can send it */
335 trap = check_and_add_trap(ibp, trap);
336 if (!trap)
337 return;
338
339 pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
340 if (pkey_idx < 0) {
341 pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
342 __func__, hfi1_get_pkey(ibp, 1));
343 pkey_idx = 1;
344 }
345
346 send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
347 IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
348 GFP_ATOMIC, IB_MGMT_BASE_VERSION);
349 if (IS_ERR(send_buf))
350 return;
351
352 smp = send_buf->mad;
353 smp->base_version = OPA_MGMT_BASE_VERSION;
354 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
355 smp->class_version = OPA_SM_CLASS_VERSION;
356 smp->method = IB_MGMT_METHOD_TRAP;
357
358 /* Only update the transaction ID for new traps (o13-5). */
359 if (trap->tid == 0) {
360 ibp->rvp.tid++;
361 /* make sure that tid != 0 */
362 if (ibp->rvp.tid == 0)
363 ibp->rvp.tid++;
364 trap->tid = cpu_to_be64(ibp->rvp.tid);
365 }
366 smp->tid = trap->tid;
367
368 smp->attr_id = IB_SMP_ATTR_NOTICE;
369 /* o14-1: smp->mkey = 0; */
370
371 memcpy(smp->route.lid.data, &trap->data, trap->len);
372
373 spin_lock_irqsave(&ibp->rvp.lock, flags);
374 if (!ibp->rvp.sm_ah) {
375 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
376 struct ib_ah *ah;
377
378 ah = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid);
379 if (IS_ERR(ah)) {
380 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
381 return;
382 }
383 send_buf->ah = ah;
384 ibp->rvp.sm_ah = ibah_to_rvtah(ah);
385 } else {
386 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
387 return;
388 }
389 } else {
390 send_buf->ah = &ibp->rvp.sm_ah->ibah;
391 }
392
393 /*
394 * If the trap was repressed while things were getting set up, don't
395 * bother sending it. This could happen for a retry.
396 */
397 if (trap->repress) {
398 list_del(&trap->list);
399 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
400 kfree(trap);
401 ib_free_send_mad(send_buf);
402 return;
403 }
404
405 trap->in_use = 0;
406 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
407
408 if (ib_post_send_mad(send_buf, NULL))
409 ib_free_send_mad(send_buf);
410 }
411
412 void hfi1_handle_trap_timer(struct timer_list *t)
413 {
414 struct hfi1_ibport *ibp = from_timer(ibp, t, rvp.trap_timer);
415 struct trap_node *trap = NULL;
416 unsigned long flags;
417 int i;
418
419 /* Find the trap with the highest priority */
420 spin_lock_irqsave(&ibp->rvp.lock, flags);
421 for (i = 0; !trap && i < RVT_MAX_TRAP_LISTS; i++) {
422 trap = list_first_entry_or_null(&ibp->rvp.trap_lists[i].list,
423 struct trap_node, list);
424 }
425 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
426
427 if (trap)
428 send_trap(ibp, trap);
429 }
430
431 static struct trap_node *create_trap_node(u8 type, __be16 trap_num, u32 lid)
432 {
433 struct trap_node *trap;
434
435 trap = kzalloc(sizeof(*trap), GFP_ATOMIC);
436 if (!trap)
437 return NULL;
438
439 INIT_LIST_HEAD(&trap->list);
440 trap->data.generic_type = type;
441 trap->data.prod_type_lsb = IB_NOTICE_PROD_CA;
442 trap->data.trap_num = trap_num;
443 trap->data.issuer_lid = cpu_to_be32(lid);
444
445 return trap;
446 }
447
448 /*
449 * Send a bad P_Key trap (ch. 14.3.8).
450 */
451 void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
452 u32 qp1, u32 qp2, u32 lid1, u32 lid2)
453 {
454 struct trap_node *trap;
455 u32 lid = ppd_from_ibp(ibp)->lid;
456
457 ibp->rvp.n_pkt_drops++;
458 ibp->rvp.pkey_violations++;
459
460 trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_P_KEY,
461 lid);
462 if (!trap)
463 return;
464
465 /* Send violation trap */
466 trap->data.ntc_257_258.lid1 = cpu_to_be32(lid1);
467 trap->data.ntc_257_258.lid2 = cpu_to_be32(lid2);
468 trap->data.ntc_257_258.key = cpu_to_be32(key);
469 trap->data.ntc_257_258.sl = sl << 3;
470 trap->data.ntc_257_258.qp1 = cpu_to_be32(qp1);
471 trap->data.ntc_257_258.qp2 = cpu_to_be32(qp2);
472
473 trap->len = sizeof(trap->data);
474 send_trap(ibp, trap);
475 }
476
477 /*
478 * Send a bad M_Key trap (ch. 14.3.9).
479 */
480 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
481 __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
482 {
483 struct trap_node *trap;
484 u32 lid = ppd_from_ibp(ibp)->lid;
485
486 trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_M_KEY,
487 lid);
488 if (!trap)
489 return;
490
491 /* Send violation trap */
492 trap->data.ntc_256.lid = trap->data.issuer_lid;
493 trap->data.ntc_256.method = mad->method;
494 trap->data.ntc_256.attr_id = mad->attr_id;
495 trap->data.ntc_256.attr_mod = mad->attr_mod;
496 trap->data.ntc_256.mkey = mkey;
497 if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
498 trap->data.ntc_256.dr_slid = dr_slid;
499 trap->data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
500 if (hop_cnt > ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path)) {
501 trap->data.ntc_256.dr_trunc_hop |=
502 IB_NOTICE_TRAP_DR_TRUNC;
503 hop_cnt = ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path);
504 }
505 trap->data.ntc_256.dr_trunc_hop |= hop_cnt;
506 memcpy(trap->data.ntc_256.dr_rtn_path, return_path,
507 hop_cnt);
508 }
509
510 trap->len = sizeof(trap->data);
511
512 send_trap(ibp, trap);
513 }
514
515 /*
516 * Send a Port Capability Mask Changed trap (ch. 14.3.11).
517 */
518 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num)
519 {
520 struct trap_node *trap;
521 struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
522 struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
523 struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
524 u32 lid = ppd_from_ibp(ibp)->lid;
525
526 trap = create_trap_node(IB_NOTICE_TYPE_INFO,
527 OPA_TRAP_CHANGE_CAPABILITY,
528 lid);
529 if (!trap)
530 return;
531
532 trap->data.ntc_144.lid = trap->data.issuer_lid;
533 trap->data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
534 trap->data.ntc_144.cap_mask3 = cpu_to_be16(ibp->rvp.port_cap3_flags);
535
536 trap->len = sizeof(trap->data);
537 send_trap(ibp, trap);
538 }
539
540 /*
541 * Send a System Image GUID Changed trap (ch. 14.3.12).
542 */
543 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
544 {
545 struct trap_node *trap;
546 u32 lid = ppd_from_ibp(ibp)->lid;
547
548 trap = create_trap_node(IB_NOTICE_TYPE_INFO, OPA_TRAP_CHANGE_SYSGUID,
549 lid);
550 if (!trap)
551 return;
552
553 trap->data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
554 trap->data.ntc_145.lid = trap->data.issuer_lid;
555
556 trap->len = sizeof(trap->data);
557 send_trap(ibp, trap);
558 }
559
560 /*
561 * Send a Node Description Changed trap (ch. 14.3.13).
562 */
563 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
564 {
565 struct trap_node *trap;
566 u32 lid = ppd_from_ibp(ibp)->lid;
567
568 trap = create_trap_node(IB_NOTICE_TYPE_INFO,
569 OPA_TRAP_CHANGE_CAPABILITY,
570 lid);
571 if (!trap)
572 return;
573
574 trap->data.ntc_144.lid = trap->data.issuer_lid;
575 trap->data.ntc_144.change_flags =
576 cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
577
578 trap->len = sizeof(trap->data);
579 send_trap(ibp, trap);
580 }
581
582 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
583 u8 *data, struct ib_device *ibdev,
584 u8 port, u32 *resp_len, u32 max_len)
585 {
586 struct opa_node_description *nd;
587
588 if (am || smp_length_check(sizeof(*nd), max_len)) {
589 smp->status |= IB_SMP_INVALID_FIELD;
590 return reply((struct ib_mad_hdr *)smp);
591 }
592
593 nd = (struct opa_node_description *)data;
594
595 memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
596
597 if (resp_len)
598 *resp_len += sizeof(*nd);
599
600 return reply((struct ib_mad_hdr *)smp);
601 }
602
603 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
604 struct ib_device *ibdev, u8 port,
605 u32 *resp_len, u32 max_len)
606 {
607 struct opa_node_info *ni;
608 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
609 unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
610
611 ni = (struct opa_node_info *)data;
612
613 /* GUID 0 is illegal */
614 if (am || pidx >= dd->num_pports || ibdev->node_guid == 0 ||
615 smp_length_check(sizeof(*ni), max_len) ||
616 get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
617 smp->status |= IB_SMP_INVALID_FIELD;
618 return reply((struct ib_mad_hdr *)smp);
619 }
620
621 ni->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
622 ni->base_version = OPA_MGMT_BASE_VERSION;
623 ni->class_version = OPA_SM_CLASS_VERSION;
624 ni->node_type = 1; /* channel adapter */
625 ni->num_ports = ibdev->phys_port_cnt;
626 /* This is already in network order */
627 ni->system_image_guid = ib_hfi1_sys_image_guid;
628 ni->node_guid = ibdev->node_guid;
629 ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
630 ni->device_id = cpu_to_be16(dd->pcidev->device);
631 ni->revision = cpu_to_be32(dd->minrev);
632 ni->local_port_num = port;
633 ni->vendor_id[0] = dd->oui1;
634 ni->vendor_id[1] = dd->oui2;
635 ni->vendor_id[2] = dd->oui3;
636
637 if (resp_len)
638 *resp_len += sizeof(*ni);
639
640 return reply((struct ib_mad_hdr *)smp);
641 }
642
643 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
644 u8 port)
645 {
646 struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
647 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
648 unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
649
650 /* GUID 0 is illegal */
651 if (smp->attr_mod || pidx >= dd->num_pports ||
652 ibdev->node_guid == 0 ||
653 get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
654 smp->status |= IB_SMP_INVALID_FIELD;
655 return reply((struct ib_mad_hdr *)smp);
656 }
657
658 nip->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
659 nip->base_version = OPA_MGMT_BASE_VERSION;
660 nip->class_version = OPA_SM_CLASS_VERSION;
661 nip->node_type = 1; /* channel adapter */
662 nip->num_ports = ibdev->phys_port_cnt;
663 /* This is already in network order */
664 nip->sys_guid = ib_hfi1_sys_image_guid;
665 nip->node_guid = ibdev->node_guid;
666 nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
667 nip->device_id = cpu_to_be16(dd->pcidev->device);
668 nip->revision = cpu_to_be32(dd->minrev);
669 nip->local_port_num = port;
670 nip->vendor_id[0] = dd->oui1;
671 nip->vendor_id[1] = dd->oui2;
672 nip->vendor_id[2] = dd->oui3;
673
674 return reply((struct ib_mad_hdr *)smp);
675 }
676
677 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
678 {
679 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
680 }
681
682 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
683 {
684 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
685 }
686
687 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
688 {
689 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
690 }
691
692 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
693 int mad_flags, __be64 mkey, __be32 dr_slid,
694 u8 return_path[], u8 hop_cnt)
695 {
696 int valid_mkey = 0;
697 int ret = 0;
698
699 /* Is the mkey in the process of expiring? */
700 if (ibp->rvp.mkey_lease_timeout &&
701 time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
702 /* Clear timeout and mkey protection field. */
703 ibp->rvp.mkey_lease_timeout = 0;
704 ibp->rvp.mkeyprot = 0;
705 }
706
707 if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->rvp.mkey == 0 ||
708 ibp->rvp.mkey == mkey)
709 valid_mkey = 1;
710
711 /* Unset lease timeout on any valid Get/Set/TrapRepress */
712 if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
713 (mad->method == IB_MGMT_METHOD_GET ||
714 mad->method == IB_MGMT_METHOD_SET ||
715 mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
716 ibp->rvp.mkey_lease_timeout = 0;
717
718 if (!valid_mkey) {
719 switch (mad->method) {
720 case IB_MGMT_METHOD_GET:
721 /* Bad mkey not a violation below level 2 */
722 if (ibp->rvp.mkeyprot < 2)
723 break;
724 /* fall through */
725 case IB_MGMT_METHOD_SET:
726 case IB_MGMT_METHOD_TRAP_REPRESS:
727 if (ibp->rvp.mkey_violations != 0xFFFF)
728 ++ibp->rvp.mkey_violations;
729 if (!ibp->rvp.mkey_lease_timeout &&
730 ibp->rvp.mkey_lease_period)
731 ibp->rvp.mkey_lease_timeout = jiffies +
732 ibp->rvp.mkey_lease_period * HZ;
733 /* Generate a trap notice. */
734 bad_mkey(ibp, mad, mkey, dr_slid, return_path,
735 hop_cnt);
736 ret = 1;
737 }
738 }
739
740 return ret;
741 }
742
743 /*
744 * The SMA caches reads from LCB registers in case the LCB is unavailable.
745 * (The LCB is unavailable in certain link states, for example.)
746 */
747 struct lcb_datum {
748 u32 off;
749 u64 val;
750 };
751
752 static struct lcb_datum lcb_cache[] = {
753 { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
754 };
755
756 static int write_lcb_cache(u32 off, u64 val)
757 {
758 int i;
759
760 for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
761 if (lcb_cache[i].off == off) {
762 lcb_cache[i].val = val;
763 return 0;
764 }
765 }
766
767 pr_warn("%s bad offset 0x%x\n", __func__, off);
768 return -1;
769 }
770
771 static int read_lcb_cache(u32 off, u64 *val)
772 {
773 int i;
774
775 for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
776 if (lcb_cache[i].off == off) {
777 *val = lcb_cache[i].val;
778 return 0;
779 }
780 }
781
782 pr_warn("%s bad offset 0x%x\n", __func__, off);
783 return -1;
784 }
785
786 void read_ltp_rtt(struct hfi1_devdata *dd)
787 {
788 u64 reg;
789
790 if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
791 dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
792 else
793 write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
794 }
795
796 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
797 struct ib_device *ibdev, u8 port,
798 u32 *resp_len, u32 max_len)
799 {
800 int i;
801 struct hfi1_devdata *dd;
802 struct hfi1_pportdata *ppd;
803 struct hfi1_ibport *ibp;
804 struct opa_port_info *pi = (struct opa_port_info *)data;
805 u8 mtu;
806 u8 credit_rate;
807 u8 is_beaconing_active;
808 u32 state;
809 u32 num_ports = OPA_AM_NPORT(am);
810 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
811 u32 buffer_units;
812 u64 tmp = 0;
813
814 if (num_ports != 1 || smp_length_check(sizeof(*pi), max_len)) {
815 smp->status |= IB_SMP_INVALID_FIELD;
816 return reply((struct ib_mad_hdr *)smp);
817 }
818
819 dd = dd_from_ibdev(ibdev);
820 /* IB numbers ports from 1, hw from 0 */
821 ppd = dd->pport + (port - 1);
822 ibp = &ppd->ibport_data;
823
824 if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
825 ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
826 smp->status |= IB_SMP_INVALID_FIELD;
827 return reply((struct ib_mad_hdr *)smp);
828 }
829
830 pi->lid = cpu_to_be32(ppd->lid);
831
832 /* Only return the mkey if the protection field allows it. */
833 if (!(smp->method == IB_MGMT_METHOD_GET &&
834 ibp->rvp.mkey != smp->mkey &&
835 ibp->rvp.mkeyprot == 1))
836 pi->mkey = ibp->rvp.mkey;
837
838 pi->subnet_prefix = ibp->rvp.gid_prefix;
839 pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid);
840 pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
841 pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
842 pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
843 pi->sa_qp = cpu_to_be32(ppd->sa_qp);
844
845 pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
846 pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
847 pi->link_width.active = cpu_to_be16(ppd->link_width_active);
848
849 pi->link_width_downgrade.supported =
850 cpu_to_be16(ppd->link_width_downgrade_supported);
851 pi->link_width_downgrade.enabled =
852 cpu_to_be16(ppd->link_width_downgrade_enabled);
853 pi->link_width_downgrade.tx_active =
854 cpu_to_be16(ppd->link_width_downgrade_tx_active);
855 pi->link_width_downgrade.rx_active =
856 cpu_to_be16(ppd->link_width_downgrade_rx_active);
857
858 pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
859 pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
860 pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
861
862 state = driver_lstate(ppd);
863
864 if (start_of_sm_config && (state == IB_PORT_INIT))
865 ppd->is_sm_config_started = 1;
866
867 pi->port_phys_conf = (ppd->port_type & 0xf);
868
869 pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
870 pi->port_states.ledenable_offlinereason |=
871 ppd->is_sm_config_started << 5;
872 /*
873 * This pairs with the memory barrier in hfi1_start_led_override to
874 * ensure that we read the correct state of LED beaconing represented
875 * by led_override_timer_active
876 */
877 smp_rmb();
878 is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
879 pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
880 pi->port_states.ledenable_offlinereason |=
881 ppd->offline_disabled_reason;
882
883 pi->port_states.portphysstate_portstate =
884 (driver_pstate(ppd) << 4) | state;
885
886 pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
887
888 memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
889 for (i = 0; i < ppd->vls_supported; i++) {
890 mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
891 if ((i % 2) == 0)
892 pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4);
893 else
894 pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu;
895 }
896 /* don't forget VL 15 */
897 mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
898 pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu;
899 pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL;
900 pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
901 pi->partenforce_filterraw |=
902 (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
903 if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
904 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
905 if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
906 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
907 pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
908 /* P_KeyViolations are counted by hardware. */
909 pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
910 pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
911
912 pi->vl.cap = ppd->vls_supported;
913 pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit);
914 pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
915 pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
916
917 pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout;
918
919 pi->port_link_mode = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
920 OPA_PORT_LINK_MODE_OPA << 5 |
921 OPA_PORT_LINK_MODE_OPA);
922
923 pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
924
925 pi->port_mode = cpu_to_be16(
926 ppd->is_active_optimize_enabled ?
927 OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
928
929 pi->port_packet_format.supported =
930 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
931 OPA_PORT_PACKET_FORMAT_16B);
932 pi->port_packet_format.enabled =
933 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
934 OPA_PORT_PACKET_FORMAT_16B);
935
936 /* flit_control.interleave is (OPA V1, version .76):
937 * bits use
938 * ---- ---
939 * 2 res
940 * 2 DistanceSupported
941 * 2 DistanceEnabled
942 * 5 MaxNextLevelTxEnabled
943 * 5 MaxNestLevelRxSupported
944 *
945 * HFI supports only "distance mode 1" (see OPA V1, version .76,
946 * section 9.6.2), so set DistanceSupported, DistanceEnabled
947 * to 0x1.
948 */
949 pi->flit_control.interleave = cpu_to_be16(0x1400);
950
951 pi->link_down_reason = ppd->local_link_down_reason.sma;
952 pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
953 pi->port_error_action = cpu_to_be32(ppd->port_error_action);
954 pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
955
956 /* 32.768 usec. response time (guessing) */
957 pi->resptimevalue = 3;
958
959 pi->local_port_num = port;
960
961 /* buffer info for FM */
962 pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
963
964 pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
965 pi->neigh_port_num = ppd->neighbor_port_number;
966 pi->port_neigh_mode =
967 (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
968 (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
969 (ppd->neighbor_fm_security ?
970 OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
971
972 /* HFIs shall always return VL15 credits to their
973 * neighbor in a timely manner, without any credit return pacing.
974 */
975 credit_rate = 0;
976 buffer_units = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
977 buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
978 buffer_units |= (credit_rate << 6) &
979 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
980 buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
981 pi->buffer_units = cpu_to_be32(buffer_units);
982
983 pi->opa_cap_mask = cpu_to_be16(ibp->rvp.port_cap3_flags);
984 pi->collectivemask_multicastmask = ((OPA_COLLECTIVE_NR & 0x7)
985 << 3 | (OPA_MCAST_NR & 0x7));
986
987 /* HFI supports a replay buffer 128 LTPs in size */
988 pi->replay_depth.buffer = 0x80;
989 /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
990 read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
991
992 /*
993 * this counter is 16 bits wide, but the replay_depth.wire
994 * variable is only 8 bits
995 */
996 if (tmp > 0xff)
997 tmp = 0xff;
998 pi->replay_depth.wire = tmp;
999
1000 if (resp_len)
1001 *resp_len += sizeof(struct opa_port_info);
1002
1003 return reply((struct ib_mad_hdr *)smp);
1004 }
1005
1006 /**
1007 * get_pkeys - return the PKEY table
1008 * @dd: the hfi1_ib device
1009 * @port: the IB port number
1010 * @pkeys: the pkey table is placed here
1011 */
1012 static int get_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
1013 {
1014 struct hfi1_pportdata *ppd = dd->pport + port - 1;
1015
1016 memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
1017
1018 return 0;
1019 }
1020
1021 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1022 struct ib_device *ibdev, u8 port,
1023 u32 *resp_len, u32 max_len)
1024 {
1025 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1026 u32 n_blocks_req = OPA_AM_NBLK(am);
1027 u32 start_block = am & 0x7ff;
1028 __be16 *p;
1029 u16 *q;
1030 int i;
1031 u16 n_blocks_avail;
1032 unsigned npkeys = hfi1_get_npkeys(dd);
1033 size_t size;
1034
1035 if (n_blocks_req == 0) {
1036 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
1037 port, start_block, n_blocks_req);
1038 smp->status |= IB_SMP_INVALID_FIELD;
1039 return reply((struct ib_mad_hdr *)smp);
1040 }
1041
1042 n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1043
1044 size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16);
1045
1046 if (smp_length_check(size, max_len)) {
1047 smp->status |= IB_SMP_INVALID_FIELD;
1048 return reply((struct ib_mad_hdr *)smp);
1049 }
1050
1051 if (start_block + n_blocks_req > n_blocks_avail ||
1052 n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1053 pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; "
1054 "avail 0x%x; blk/smp 0x%lx\n",
1055 start_block, n_blocks_req, n_blocks_avail,
1056 OPA_NUM_PKEY_BLOCKS_PER_SMP);
1057 smp->status |= IB_SMP_INVALID_FIELD;
1058 return reply((struct ib_mad_hdr *)smp);
1059 }
1060
1061 p = (__be16 *)data;
1062 q = (u16 *)data;
1063 /* get the real pkeys if we are requesting the first block */
1064 if (start_block == 0) {
1065 get_pkeys(dd, port, q);
1066 for (i = 0; i < npkeys; i++)
1067 p[i] = cpu_to_be16(q[i]);
1068 if (resp_len)
1069 *resp_len += size;
1070 } else {
1071 smp->status |= IB_SMP_INVALID_FIELD;
1072 }
1073 return reply((struct ib_mad_hdr *)smp);
1074 }
1075
1076 enum {
1077 HFI_TRANSITION_DISALLOWED,
1078 HFI_TRANSITION_IGNORED,
1079 HFI_TRANSITION_ALLOWED,
1080 HFI_TRANSITION_UNDEFINED,
1081 };
1082
1083 /*
1084 * Use shortened names to improve readability of
1085 * {logical,physical}_state_transitions
1086 */
1087 enum {
1088 __D = HFI_TRANSITION_DISALLOWED,
1089 __I = HFI_TRANSITION_IGNORED,
1090 __A = HFI_TRANSITION_ALLOWED,
1091 __U = HFI_TRANSITION_UNDEFINED,
1092 };
1093
1094 /*
1095 * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are
1096 * represented in physical_state_transitions.
1097 */
1098 #define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1)
1099
1100 /*
1101 * Within physical_state_transitions, rows represent "old" states,
1102 * columns "new" states, and physical_state_transitions.allowed[old][new]
1103 * indicates if the transition from old state to new state is legal (see
1104 * OPAg1v1, Table 6-4).
1105 */
1106 static const struct {
1107 u8 allowed[__N_PHYSTATES][__N_PHYSTATES];
1108 } physical_state_transitions = {
1109 {
1110 /* 2 3 4 5 6 7 8 9 10 11 */
1111 /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D },
1112 /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A },
1113 /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1114 /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D },
1115 /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1116 /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D },
1117 /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1118 /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D },
1119 /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1120 /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I },
1121 }
1122 };
1123
1124 /*
1125 * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented
1126 * logical_state_transitions
1127 */
1128
1129 #define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1)
1130
1131 /*
1132 * Within logical_state_transitions rows represent "old" states,
1133 * columns "new" states, and logical_state_transitions.allowed[old][new]
1134 * indicates if the transition from old state to new state is legal (see
1135 * OPAg1v1, Table 9-12).
1136 */
1137 static const struct {
1138 u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES];
1139 } logical_state_transitions = {
1140 {
1141 /* 1 2 3 4 5 */
1142 /* 1 */ { __I, __D, __D, __D, __U},
1143 /* 2 */ { __D, __I, __A, __D, __U},
1144 /* 3 */ { __D, __D, __I, __A, __U},
1145 /* 4 */ { __D, __D, __I, __I, __U},
1146 /* 5 */ { __U, __U, __U, __U, __U},
1147 }
1148 };
1149
1150 static int logical_transition_allowed(int old, int new)
1151 {
1152 if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER ||
1153 new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) {
1154 pr_warn("invalid logical state(s) (old %d new %d)\n",
1155 old, new);
1156 return HFI_TRANSITION_UNDEFINED;
1157 }
1158
1159 if (new == IB_PORT_NOP)
1160 return HFI_TRANSITION_ALLOWED; /* always allowed */
1161
1162 /* adjust states for indexing into logical_state_transitions */
1163 old -= IB_PORT_DOWN;
1164 new -= IB_PORT_DOWN;
1165
1166 if (old < 0 || new < 0)
1167 return HFI_TRANSITION_UNDEFINED;
1168 return logical_state_transitions.allowed[old][new];
1169 }
1170
1171 static int physical_transition_allowed(int old, int new)
1172 {
1173 if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX ||
1174 new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) {
1175 pr_warn("invalid physical state(s) (old %d new %d)\n",
1176 old, new);
1177 return HFI_TRANSITION_UNDEFINED;
1178 }
1179
1180 if (new == IB_PORTPHYSSTATE_NOP)
1181 return HFI_TRANSITION_ALLOWED; /* always allowed */
1182
1183 /* adjust states for indexing into physical_state_transitions */
1184 old -= IB_PORTPHYSSTATE_POLLING;
1185 new -= IB_PORTPHYSSTATE_POLLING;
1186
1187 if (old < 0 || new < 0)
1188 return HFI_TRANSITION_UNDEFINED;
1189 return physical_state_transitions.allowed[old][new];
1190 }
1191
1192 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
1193 u32 logical_new, u32 physical_new)
1194 {
1195 u32 physical_old = driver_pstate(ppd);
1196 u32 logical_old = driver_lstate(ppd);
1197 int ret, logical_allowed, physical_allowed;
1198
1199 ret = logical_transition_allowed(logical_old, logical_new);
1200 logical_allowed = ret;
1201
1202 if (ret == HFI_TRANSITION_DISALLOWED ||
1203 ret == HFI_TRANSITION_UNDEFINED) {
1204 pr_warn("invalid logical state transition %s -> %s\n",
1205 opa_lstate_name(logical_old),
1206 opa_lstate_name(logical_new));
1207 return ret;
1208 }
1209
1210 ret = physical_transition_allowed(physical_old, physical_new);
1211 physical_allowed = ret;
1212
1213 if (ret == HFI_TRANSITION_DISALLOWED ||
1214 ret == HFI_TRANSITION_UNDEFINED) {
1215 pr_warn("invalid physical state transition %s -> %s\n",
1216 opa_pstate_name(physical_old),
1217 opa_pstate_name(physical_new));
1218 return ret;
1219 }
1220
1221 if (logical_allowed == HFI_TRANSITION_IGNORED &&
1222 physical_allowed == HFI_TRANSITION_IGNORED)
1223 return HFI_TRANSITION_IGNORED;
1224
1225 /*
1226 * A change request of Physical Port State from
1227 * 'Offline' to 'Polling' should be ignored.
1228 */
1229 if ((physical_old == OPA_PORTPHYSSTATE_OFFLINE) &&
1230 (physical_new == IB_PORTPHYSSTATE_POLLING))
1231 return HFI_TRANSITION_IGNORED;
1232
1233 /*
1234 * Either physical_allowed or logical_allowed is
1235 * HFI_TRANSITION_ALLOWED.
1236 */
1237 return HFI_TRANSITION_ALLOWED;
1238 }
1239
1240 static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
1241 u32 logical_state, u32 phys_state)
1242 {
1243 struct hfi1_devdata *dd = ppd->dd;
1244 u32 link_state;
1245 int ret;
1246
1247 ret = port_states_transition_allowed(ppd, logical_state, phys_state);
1248 if (ret == HFI_TRANSITION_DISALLOWED ||
1249 ret == HFI_TRANSITION_UNDEFINED) {
1250 /* error message emitted above */
1251 smp->status |= IB_SMP_INVALID_FIELD;
1252 return 0;
1253 }
1254
1255 if (ret == HFI_TRANSITION_IGNORED)
1256 return 0;
1257
1258 if ((phys_state != IB_PORTPHYSSTATE_NOP) &&
1259 !(logical_state == IB_PORT_DOWN ||
1260 logical_state == IB_PORT_NOP)){
1261 pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n",
1262 logical_state, phys_state);
1263 smp->status |= IB_SMP_INVALID_FIELD;
1264 }
1265
1266 /*
1267 * Logical state changes are summarized in OPAv1g1 spec.,
1268 * Table 9-12; physical state changes are summarized in
1269 * OPAv1g1 spec., Table 6.4.
1270 */
1271 switch (logical_state) {
1272 case IB_PORT_NOP:
1273 if (phys_state == IB_PORTPHYSSTATE_NOP)
1274 break;
1275 /* FALLTHROUGH */
1276 case IB_PORT_DOWN:
1277 if (phys_state == IB_PORTPHYSSTATE_NOP) {
1278 link_state = HLS_DN_DOWNDEF;
1279 } else if (phys_state == IB_PORTPHYSSTATE_POLLING) {
1280 link_state = HLS_DN_POLL;
1281 set_link_down_reason(ppd, OPA_LINKDOWN_REASON_FM_BOUNCE,
1282 0, OPA_LINKDOWN_REASON_FM_BOUNCE);
1283 } else if (phys_state == IB_PORTPHYSSTATE_DISABLED) {
1284 link_state = HLS_DN_DISABLE;
1285 } else {
1286 pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n",
1287 phys_state);
1288 smp->status |= IB_SMP_INVALID_FIELD;
1289 break;
1290 }
1291
1292 if ((link_state == HLS_DN_POLL ||
1293 link_state == HLS_DN_DOWNDEF)) {
1294 /*
1295 * Going to poll. No matter what the current state,
1296 * always move offline first, then tune and start the
1297 * link. This correctly handles a FM link bounce and
1298 * a link enable. Going offline is a no-op if already
1299 * offline.
1300 */
1301 set_link_state(ppd, HLS_DN_OFFLINE);
1302 start_link(ppd);
1303 } else {
1304 set_link_state(ppd, link_state);
1305 }
1306 if (link_state == HLS_DN_DISABLE &&
1307 (ppd->offline_disabled_reason >
1308 HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
1309 ppd->offline_disabled_reason ==
1310 HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
1311 ppd->offline_disabled_reason =
1312 HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
1313 /*
1314 * Don't send a reply if the response would be sent
1315 * through the disabled port.
1316 */
1317 if (link_state == HLS_DN_DISABLE && smp->hop_cnt)
1318 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1319 break;
1320 case IB_PORT_ARMED:
1321 ret = set_link_state(ppd, HLS_UP_ARMED);
1322 if (!ret)
1323 send_idle_sma(dd, SMA_IDLE_ARM);
1324 break;
1325 case IB_PORT_ACTIVE:
1326 if (ppd->neighbor_normal) {
1327 ret = set_link_state(ppd, HLS_UP_ACTIVE);
1328 if (ret == 0)
1329 send_idle_sma(dd, SMA_IDLE_ACTIVE);
1330 } else {
1331 pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
1332 smp->status |= IB_SMP_INVALID_FIELD;
1333 }
1334 break;
1335 default:
1336 pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
1337 logical_state);
1338 smp->status |= IB_SMP_INVALID_FIELD;
1339 }
1340
1341 return 0;
1342 }
1343
1344 /**
1345 * subn_set_opa_portinfo - set port information
1346 * @smp: the incoming SM packet
1347 * @ibdev: the infiniband device
1348 * @port: the port on the device
1349 *
1350 */
1351 static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
1352 struct ib_device *ibdev, u8 port,
1353 u32 *resp_len, u32 max_len)
1354 {
1355 struct opa_port_info *pi = (struct opa_port_info *)data;
1356 struct ib_event event;
1357 struct hfi1_devdata *dd;
1358 struct hfi1_pportdata *ppd;
1359 struct hfi1_ibport *ibp;
1360 u8 clientrereg;
1361 unsigned long flags;
1362 u32 smlid;
1363 u32 lid;
1364 u8 ls_old, ls_new, ps_new;
1365 u8 vls;
1366 u8 msl;
1367 u8 crc_enabled;
1368 u16 lse, lwe, mtu;
1369 u32 num_ports = OPA_AM_NPORT(am);
1370 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1371 int ret, i, invalid = 0, call_set_mtu = 0;
1372 int call_link_downgrade_policy = 0;
1373
1374 if (num_ports != 1 ||
1375 smp_length_check(sizeof(*pi), max_len)) {
1376 smp->status |= IB_SMP_INVALID_FIELD;
1377 return reply((struct ib_mad_hdr *)smp);
1378 }
1379
1380 lid = be32_to_cpu(pi->lid);
1381 if (lid & 0xFF000000) {
1382 pr_warn("OPA_PortInfo lid out of range: %X\n", lid);
1383 smp->status |= IB_SMP_INVALID_FIELD;
1384 goto get_only;
1385 }
1386
1387
1388 smlid = be32_to_cpu(pi->sm_lid);
1389 if (smlid & 0xFF000000) {
1390 pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid);
1391 smp->status |= IB_SMP_INVALID_FIELD;
1392 goto get_only;
1393 }
1394
1395 clientrereg = (pi->clientrereg_subnettimeout &
1396 OPA_PI_MASK_CLIENT_REREGISTER);
1397
1398 dd = dd_from_ibdev(ibdev);
1399 /* IB numbers ports from 1, hw from 0 */
1400 ppd = dd->pport + (port - 1);
1401 ibp = &ppd->ibport_data;
1402 event.device = ibdev;
1403 event.element.port_num = port;
1404
1405 ls_old = driver_lstate(ppd);
1406
1407 ibp->rvp.mkey = pi->mkey;
1408 if (ibp->rvp.gid_prefix != pi->subnet_prefix) {
1409 ibp->rvp.gid_prefix = pi->subnet_prefix;
1410 event.event = IB_EVENT_GID_CHANGE;
1411 ib_dispatch_event(&event);
1412 }
1413 ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
1414
1415 /* Must be a valid unicast LID address. */
1416 if ((lid == 0 && ls_old > IB_PORT_INIT) ||
1417 (hfi1_is_16B_mcast(lid))) {
1418 smp->status |= IB_SMP_INVALID_FIELD;
1419 pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n",
1420 lid);
1421 } else if (ppd->lid != lid ||
1422 ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) {
1423 if (ppd->lid != lid)
1424 hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT);
1425 if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
1426 hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT);
1427 hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
1428 event.event = IB_EVENT_LID_CHANGE;
1429 ib_dispatch_event(&event);
1430
1431 if (HFI1_PORT_GUID_INDEX + 1 < HFI1_GUIDS_PER_PORT) {
1432 /* Manufacture GID from LID to support extended
1433 * addresses
1434 */
1435 ppd->guids[HFI1_PORT_GUID_INDEX + 1] =
1436 be64_to_cpu(OPA_MAKE_ID(lid));
1437 event.event = IB_EVENT_GID_CHANGE;
1438 ib_dispatch_event(&event);
1439 }
1440 }
1441
1442 msl = pi->smsl & OPA_PI_MASK_SMSL;
1443 if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON)
1444 ppd->linkinit_reason =
1445 (pi->partenforce_filterraw &
1446 OPA_PI_MASK_LINKINIT_REASON);
1447
1448 /* Must be a valid unicast LID address. */
1449 if ((smlid == 0 && ls_old > IB_PORT_INIT) ||
1450 (hfi1_is_16B_mcast(smlid))) {
1451 smp->status |= IB_SMP_INVALID_FIELD;
1452 pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
1453 } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
1454 pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid);
1455 spin_lock_irqsave(&ibp->rvp.lock, flags);
1456 if (ibp->rvp.sm_ah) {
1457 if (smlid != ibp->rvp.sm_lid)
1458 hfi1_modify_qp0_ah(ibp, ibp->rvp.sm_ah, smlid);
1459 if (msl != ibp->rvp.sm_sl)
1460 rdma_ah_set_sl(&ibp->rvp.sm_ah->attr, msl);
1461 }
1462 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1463 if (smlid != ibp->rvp.sm_lid)
1464 ibp->rvp.sm_lid = smlid;
1465 if (msl != ibp->rvp.sm_sl)
1466 ibp->rvp.sm_sl = msl;
1467 event.event = IB_EVENT_SM_CHANGE;
1468 ib_dispatch_event(&event);
1469 }
1470
1471 if (pi->link_down_reason == 0) {
1472 ppd->local_link_down_reason.sma = 0;
1473 ppd->local_link_down_reason.latest = 0;
1474 }
1475
1476 if (pi->neigh_link_down_reason == 0) {
1477 ppd->neigh_link_down_reason.sma = 0;
1478 ppd->neigh_link_down_reason.latest = 0;
1479 }
1480
1481 ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp);
1482 ppd->sa_qp = be32_to_cpu(pi->sa_qp);
1483
1484 ppd->port_error_action = be32_to_cpu(pi->port_error_action);
1485 lwe = be16_to_cpu(pi->link_width.enabled);
1486 if (lwe) {
1487 if (lwe == OPA_LINK_WIDTH_RESET ||
1488 lwe == OPA_LINK_WIDTH_RESET_OLD)
1489 set_link_width_enabled(ppd, ppd->link_width_supported);
1490 else if ((lwe & ~ppd->link_width_supported) == 0)
1491 set_link_width_enabled(ppd, lwe);
1492 else
1493 smp->status |= IB_SMP_INVALID_FIELD;
1494 }
1495 lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
1496 /* LWD.E is always applied - 0 means "disabled" */
1497 if (lwe == OPA_LINK_WIDTH_RESET ||
1498 lwe == OPA_LINK_WIDTH_RESET_OLD) {
1499 set_link_width_downgrade_enabled(ppd,
1500 ppd->
1501 link_width_downgrade_supported
1502 );
1503 } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) {
1504 /* only set and apply if something changed */
1505 if (lwe != ppd->link_width_downgrade_enabled) {
1506 set_link_width_downgrade_enabled(ppd, lwe);
1507 call_link_downgrade_policy = 1;
1508 }
1509 } else {
1510 smp->status |= IB_SMP_INVALID_FIELD;
1511 }
1512 lse = be16_to_cpu(pi->link_speed.enabled);
1513 if (lse) {
1514 if (lse & be16_to_cpu(pi->link_speed.supported))
1515 set_link_speed_enabled(ppd, lse);
1516 else
1517 smp->status |= IB_SMP_INVALID_FIELD;
1518 }
1519
1520 ibp->rvp.mkeyprot =
1521 (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6;
1522 ibp->rvp.vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF;
1523 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT,
1524 ibp->rvp.vl_high_limit);
1525
1526 if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
1527 ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
1528 smp->status |= IB_SMP_INVALID_FIELD;
1529 return reply((struct ib_mad_hdr *)smp);
1530 }
1531 for (i = 0; i < ppd->vls_supported; i++) {
1532 if ((i % 2) == 0)
1533 mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i / 2] >>
1534 4) & 0xF);
1535 else
1536 mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i / 2] &
1537 0xF);
1538 if (mtu == 0xffff) {
1539 pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n",
1540 mtu,
1541 (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
1542 smp->status |= IB_SMP_INVALID_FIELD;
1543 mtu = hfi1_max_mtu; /* use a valid MTU */
1544 }
1545 if (dd->vld[i].mtu != mtu) {
1546 dd_dev_info(dd,
1547 "MTU change on vl %d from %d to %d\n",
1548 i, dd->vld[i].mtu, mtu);
1549 dd->vld[i].mtu = mtu;
1550 call_set_mtu++;
1551 }
1552 }
1553 /* As per OPAV1 spec: VL15 must support and be configured
1554 * for operation with a 2048 or larger MTU.
1555 */
1556 mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15 / 2] & 0xF);
1557 if (mtu < 2048 || mtu == 0xffff)
1558 mtu = 2048;
1559 if (dd->vld[15].mtu != mtu) {
1560 dd_dev_info(dd,
1561 "MTU change on vl 15 from %d to %d\n",
1562 dd->vld[15].mtu, mtu);
1563 dd->vld[15].mtu = mtu;
1564 call_set_mtu++;
1565 }
1566 if (call_set_mtu)
1567 set_mtu(ppd);
1568
1569 /* Set operational VLs */
1570 vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
1571 if (vls) {
1572 if (vls > ppd->vls_supported) {
1573 pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
1574 pi->operational_vls);
1575 smp->status |= IB_SMP_INVALID_FIELD;
1576 } else {
1577 if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS,
1578 vls) == -EINVAL)
1579 smp->status |= IB_SMP_INVALID_FIELD;
1580 }
1581 }
1582
1583 if (pi->mkey_violations == 0)
1584 ibp->rvp.mkey_violations = 0;
1585
1586 if (pi->pkey_violations == 0)
1587 ibp->rvp.pkey_violations = 0;
1588
1589 if (pi->qkey_violations == 0)
1590 ibp->rvp.qkey_violations = 0;
1591
1592 ibp->rvp.subnet_timeout =
1593 pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT;
1594
1595 crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode);
1596 crc_enabled >>= 4;
1597 crc_enabled &= 0xf;
1598
1599 if (crc_enabled != 0)
1600 ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled);
1601
1602 ppd->is_active_optimize_enabled =
1603 !!(be16_to_cpu(pi->port_mode)
1604 & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE);
1605
1606 ls_new = pi->port_states.portphysstate_portstate &
1607 OPA_PI_MASK_PORT_STATE;
1608 ps_new = (pi->port_states.portphysstate_portstate &
1609 OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4;
1610
1611 if (ls_old == IB_PORT_INIT) {
1612 if (start_of_sm_config) {
1613 if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1614 ppd->is_sm_config_started = 1;
1615 } else if (ls_new == IB_PORT_ARMED) {
1616 if (ppd->is_sm_config_started == 0) {
1617 invalid = 1;
1618 smp->status |= IB_SMP_INVALID_FIELD;
1619 }
1620 }
1621 }
1622
1623 /* Handle CLIENT_REREGISTER event b/c SM asked us for it */
1624 if (clientrereg) {
1625 event.event = IB_EVENT_CLIENT_REREGISTER;
1626 ib_dispatch_event(&event);
1627 }
1628
1629 /*
1630 * Do the port state change now that the other link parameters
1631 * have been set.
1632 * Changing the port physical state only makes sense if the link
1633 * is down or is being set to down.
1634 */
1635
1636 if (!invalid) {
1637 ret = set_port_states(ppd, smp, ls_new, ps_new);
1638 if (ret)
1639 return ret;
1640 }
1641
1642 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len,
1643 max_len);
1644
1645 /* restore re-reg bit per o14-12.2.1 */
1646 pi->clientrereg_subnettimeout |= clientrereg;
1647
1648 /*
1649 * Apply the new link downgrade policy. This may result in a link
1650 * bounce. Do this after everything else so things are settled.
1651 * Possible problem: if setting the port state above fails, then
1652 * the policy change is not applied.
1653 */
1654 if (call_link_downgrade_policy)
1655 apply_link_downgrade_policy(ppd, 0);
1656
1657 return ret;
1658
1659 get_only:
1660 return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len,
1661 max_len);
1662 }
1663
1664 /**
1665 * set_pkeys - set the PKEY table for ctxt 0
1666 * @dd: the hfi1_ib device
1667 * @port: the IB port number
1668 * @pkeys: the PKEY table
1669 */
1670 static int set_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
1671 {
1672 struct hfi1_pportdata *ppd;
1673 int i;
1674 int changed = 0;
1675 int update_includes_mgmt_partition = 0;
1676
1677 /*
1678 * IB port one/two always maps to context zero/one,
1679 * always a kernel context, no locking needed
1680 * If we get here with ppd setup, no need to check
1681 * that rcd is valid.
1682 */
1683 ppd = dd->pport + (port - 1);
1684 /*
1685 * If the update does not include the management pkey, don't do it.
1686 */
1687 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1688 if (pkeys[i] == LIM_MGMT_P_KEY) {
1689 update_includes_mgmt_partition = 1;
1690 break;
1691 }
1692 }
1693
1694 if (!update_includes_mgmt_partition)
1695 return 1;
1696
1697 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1698 u16 key = pkeys[i];
1699 u16 okey = ppd->pkeys[i];
1700
1701 if (key == okey)
1702 continue;
1703 /*
1704 * The SM gives us the complete PKey table. We have
1705 * to ensure that we put the PKeys in the matching
1706 * slots.
1707 */
1708 ppd->pkeys[i] = key;
1709 changed = 1;
1710 }
1711
1712 if (changed) {
1713 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0);
1714 hfi1_event_pkey_change(dd, port);
1715 }
1716
1717 return 0;
1718 }
1719
1720 static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1721 struct ib_device *ibdev, u8 port,
1722 u32 *resp_len, u32 max_len)
1723 {
1724 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1725 u32 n_blocks_sent = OPA_AM_NBLK(am);
1726 u32 start_block = am & 0x7ff;
1727 u16 *p = (u16 *)data;
1728 __be16 *q = (__be16 *)data;
1729 int i;
1730 u16 n_blocks_avail;
1731 unsigned npkeys = hfi1_get_npkeys(dd);
1732 u32 size = 0;
1733
1734 if (n_blocks_sent == 0) {
1735 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
1736 port, start_block, n_blocks_sent);
1737 smp->status |= IB_SMP_INVALID_FIELD;
1738 return reply((struct ib_mad_hdr *)smp);
1739 }
1740
1741 n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1742
1743 size = sizeof(u16) * (n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE);
1744
1745 if (smp_length_check(size, max_len)) {
1746 smp->status |= IB_SMP_INVALID_FIELD;
1747 return reply((struct ib_mad_hdr *)smp);
1748 }
1749
1750 if (start_block + n_blocks_sent > n_blocks_avail ||
1751 n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1752 pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n",
1753 start_block, n_blocks_sent, n_blocks_avail,
1754 OPA_NUM_PKEY_BLOCKS_PER_SMP);
1755 smp->status |= IB_SMP_INVALID_FIELD;
1756 return reply((struct ib_mad_hdr *)smp);
1757 }
1758
1759 for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++)
1760 p[i] = be16_to_cpu(q[i]);
1761
1762 if (start_block == 0 && set_pkeys(dd, port, p) != 0) {
1763 smp->status |= IB_SMP_INVALID_FIELD;
1764 return reply((struct ib_mad_hdr *)smp);
1765 }
1766
1767 return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len,
1768 max_len);
1769 }
1770
1771 #define ILLEGAL_VL 12
1772 /*
1773 * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except
1774 * for SC15, which must map to VL15). If we don't remap things this
1775 * way it is possible for VL15 counters to increment when we try to
1776 * send on a SC which is mapped to an invalid VL.
1777 * When getting the table convert ILLEGAL_VL back to VL15.
1778 */
1779 static void filter_sc2vlt(void *data, bool set)
1780 {
1781 int i;
1782 u8 *pd = data;
1783
1784 for (i = 0; i < OPA_MAX_SCS; i++) {
1785 if (i == 15)
1786 continue;
1787
1788 if (set) {
1789 if ((pd[i] & 0x1f) == 0xf)
1790 pd[i] = ILLEGAL_VL;
1791 } else {
1792 if ((pd[i] & 0x1f) == ILLEGAL_VL)
1793 pd[i] = 0xf;
1794 }
1795 }
1796 }
1797
1798 static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1799 {
1800 u64 *val = data;
1801
1802 filter_sc2vlt(data, true);
1803
1804 write_csr(dd, SEND_SC2VLT0, *val++);
1805 write_csr(dd, SEND_SC2VLT1, *val++);
1806 write_csr(dd, SEND_SC2VLT2, *val++);
1807 write_csr(dd, SEND_SC2VLT3, *val++);
1808 write_seqlock_irq(&dd->sc2vl_lock);
1809 memcpy(dd->sc2vl, data, sizeof(dd->sc2vl));
1810 write_sequnlock_irq(&dd->sc2vl_lock);
1811 return 0;
1812 }
1813
1814 static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1815 {
1816 u64 *val = (u64 *)data;
1817
1818 *val++ = read_csr(dd, SEND_SC2VLT0);
1819 *val++ = read_csr(dd, SEND_SC2VLT1);
1820 *val++ = read_csr(dd, SEND_SC2VLT2);
1821 *val++ = read_csr(dd, SEND_SC2VLT3);
1822
1823 filter_sc2vlt((u64 *)data, false);
1824 return 0;
1825 }
1826
1827 static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1828 struct ib_device *ibdev, u8 port,
1829 u32 *resp_len, u32 max_len)
1830 {
1831 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1832 u8 *p = data;
1833 size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */
1834 unsigned i;
1835
1836 if (am || smp_length_check(size, max_len)) {
1837 smp->status |= IB_SMP_INVALID_FIELD;
1838 return reply((struct ib_mad_hdr *)smp);
1839 }
1840
1841 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1842 *p++ = ibp->sl_to_sc[i];
1843
1844 if (resp_len)
1845 *resp_len += size;
1846
1847 return reply((struct ib_mad_hdr *)smp);
1848 }
1849
1850 static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1851 struct ib_device *ibdev, u8 port,
1852 u32 *resp_len, u32 max_len)
1853 {
1854 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1855 u8 *p = data;
1856 size_t size = ARRAY_SIZE(ibp->sl_to_sc);
1857 int i;
1858 u8 sc;
1859
1860 if (am || smp_length_check(size, max_len)) {
1861 smp->status |= IB_SMP_INVALID_FIELD;
1862 return reply((struct ib_mad_hdr *)smp);
1863 }
1864
1865 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++) {
1866 sc = *p++;
1867 if (ibp->sl_to_sc[i] != sc) {
1868 ibp->sl_to_sc[i] = sc;
1869
1870 /* Put all stale qps into error state */
1871 hfi1_error_port_qps(ibp, i);
1872 }
1873 }
1874
1875 return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len,
1876 max_len);
1877 }
1878
1879 static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1880 struct ib_device *ibdev, u8 port,
1881 u32 *resp_len, u32 max_len)
1882 {
1883 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1884 u8 *p = data;
1885 size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */
1886 unsigned i;
1887
1888 if (am || smp_length_check(size, max_len)) {
1889 smp->status |= IB_SMP_INVALID_FIELD;
1890 return reply((struct ib_mad_hdr *)smp);
1891 }
1892
1893 for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1894 *p++ = ibp->sc_to_sl[i];
1895
1896 if (resp_len)
1897 *resp_len += size;
1898
1899 return reply((struct ib_mad_hdr *)smp);
1900 }
1901
1902 static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1903 struct ib_device *ibdev, u8 port,
1904 u32 *resp_len, u32 max_len)
1905 {
1906 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1907 size_t size = ARRAY_SIZE(ibp->sc_to_sl);
1908 u8 *p = data;
1909 int i;
1910
1911 if (am || smp_length_check(size, max_len)) {
1912 smp->status |= IB_SMP_INVALID_FIELD;
1913 return reply((struct ib_mad_hdr *)smp);
1914 }
1915
1916 for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1917 ibp->sc_to_sl[i] = *p++;
1918
1919 return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len,
1920 max_len);
1921 }
1922
1923 static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1924 struct ib_device *ibdev, u8 port,
1925 u32 *resp_len, u32 max_len)
1926 {
1927 u32 n_blocks = OPA_AM_NBLK(am);
1928 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1929 void *vp = (void *)data;
1930 size_t size = 4 * sizeof(u64);
1931
1932 if (n_blocks != 1 || smp_length_check(size, max_len)) {
1933 smp->status |= IB_SMP_INVALID_FIELD;
1934 return reply((struct ib_mad_hdr *)smp);
1935 }
1936
1937 get_sc2vlt_tables(dd, vp);
1938
1939 if (resp_len)
1940 *resp_len += size;
1941
1942 return reply((struct ib_mad_hdr *)smp);
1943 }
1944
1945 static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1946 struct ib_device *ibdev, u8 port,
1947 u32 *resp_len, u32 max_len)
1948 {
1949 u32 n_blocks = OPA_AM_NBLK(am);
1950 int async_update = OPA_AM_ASYNC(am);
1951 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1952 void *vp = (void *)data;
1953 struct hfi1_pportdata *ppd;
1954 int lstate;
1955 /*
1956 * set_sc2vlt_tables writes the information contained in *data
1957 * to four 64-bit registers SendSC2VLt[0-3]. We need to make
1958 * sure *max_len is not greater than the total size of the four
1959 * SendSC2VLt[0-3] registers.
1960 */
1961 size_t size = 4 * sizeof(u64);
1962
1963 if (n_blocks != 1 || async_update || smp_length_check(size, max_len)) {
1964 smp->status |= IB_SMP_INVALID_FIELD;
1965 return reply((struct ib_mad_hdr *)smp);
1966 }
1967
1968 /* IB numbers ports from 1, hw from 0 */
1969 ppd = dd->pport + (port - 1);
1970 lstate = driver_lstate(ppd);
1971 /*
1972 * it's known that async_update is 0 by this point, but include
1973 * the explicit check for clarity
1974 */
1975 if (!async_update &&
1976 (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) {
1977 smp->status |= IB_SMP_INVALID_FIELD;
1978 return reply((struct ib_mad_hdr *)smp);
1979 }
1980
1981 set_sc2vlt_tables(dd, vp);
1982
1983 return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len,
1984 max_len);
1985 }
1986
1987 static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1988 struct ib_device *ibdev, u8 port,
1989 u32 *resp_len, u32 max_len)
1990 {
1991 u32 n_blocks = OPA_AM_NPORT(am);
1992 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1993 struct hfi1_pportdata *ppd;
1994 void *vp = (void *)data;
1995 int size = sizeof(struct sc2vlnt);
1996
1997 if (n_blocks != 1 || smp_length_check(size, max_len)) {
1998 smp->status |= IB_SMP_INVALID_FIELD;
1999 return reply((struct ib_mad_hdr *)smp);
2000 }
2001
2002 ppd = dd->pport + (port - 1);
2003
2004 fm_get_table(ppd, FM_TBL_SC2VLNT, vp);
2005
2006 if (resp_len)
2007 *resp_len += size;
2008
2009 return reply((struct ib_mad_hdr *)smp);
2010 }
2011
2012 static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
2013 struct ib_device *ibdev, u8 port,
2014 u32 *resp_len, u32 max_len)
2015 {
2016 u32 n_blocks = OPA_AM_NPORT(am);
2017 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2018 struct hfi1_pportdata *ppd;
2019 void *vp = (void *)data;
2020 int lstate;
2021 int size = sizeof(struct sc2vlnt);
2022
2023 if (n_blocks != 1 || smp_length_check(size, max_len)) {
2024 smp->status |= IB_SMP_INVALID_FIELD;
2025 return reply((struct ib_mad_hdr *)smp);
2026 }
2027
2028 /* IB numbers ports from 1, hw from 0 */
2029 ppd = dd->pport + (port - 1);
2030 lstate = driver_lstate(ppd);
2031 if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) {
2032 smp->status |= IB_SMP_INVALID_FIELD;
2033 return reply((struct ib_mad_hdr *)smp);
2034 }
2035
2036 ppd = dd->pport + (port - 1);
2037
2038 fm_set_table(ppd, FM_TBL_SC2VLNT, vp);
2039
2040 return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
2041 resp_len, max_len);
2042 }
2043
2044 static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
2045 struct ib_device *ibdev, u8 port,
2046 u32 *resp_len, u32 max_len)
2047 {
2048 u32 nports = OPA_AM_NPORT(am);
2049 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
2050 u32 lstate;
2051 struct hfi1_ibport *ibp;
2052 struct hfi1_pportdata *ppd;
2053 struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
2054
2055 if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) {
2056 smp->status |= IB_SMP_INVALID_FIELD;
2057 return reply((struct ib_mad_hdr *)smp);
2058 }
2059
2060 ibp = to_iport(ibdev, port);
2061 ppd = ppd_from_ibp(ibp);
2062
2063 lstate = driver_lstate(ppd);
2064
2065 if (start_of_sm_config && (lstate == IB_PORT_INIT))
2066 ppd->is_sm_config_started = 1;
2067
2068 psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
2069 psi->port_states.ledenable_offlinereason |=
2070 ppd->is_sm_config_started << 5;
2071 psi->port_states.ledenable_offlinereason |=
2072 ppd->offline_disabled_reason;
2073
2074 psi->port_states.portphysstate_portstate =
2075 (driver_pstate(ppd) << 4) | (lstate & 0xf);
2076 psi->link_width_downgrade_tx_active =
2077 cpu_to_be16(ppd->link_width_downgrade_tx_active);
2078 psi->link_width_downgrade_rx_active =
2079 cpu_to_be16(ppd->link_width_downgrade_rx_active);
2080 if (resp_len)
2081 *resp_len += sizeof(struct opa_port_state_info);
2082
2083 return reply((struct ib_mad_hdr *)smp);
2084 }
2085
2086 static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
2087 struct ib_device *ibdev, u8 port,
2088 u32 *resp_len, u32 max_len)
2089 {
2090 u32 nports = OPA_AM_NPORT(am);
2091 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
2092 u32 ls_old;
2093 u8 ls_new, ps_new;
2094 struct hfi1_ibport *ibp;
2095 struct hfi1_pportdata *ppd;
2096 struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
2097 int ret, invalid = 0;
2098
2099 if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) {
2100 smp->status |= IB_SMP_INVALID_FIELD;
2101 return reply((struct ib_mad_hdr *)smp);
2102 }
2103
2104 ibp = to_iport(ibdev, port);
2105 ppd = ppd_from_ibp(ibp);
2106
2107 ls_old = driver_lstate(ppd);
2108
2109 ls_new = port_states_to_logical_state(&psi->port_states);
2110 ps_new = port_states_to_phys_state(&psi->port_states);
2111
2112 if (ls_old == IB_PORT_INIT) {
2113 if (start_of_sm_config) {
2114 if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
2115 ppd->is_sm_config_started = 1;
2116 } else if (ls_new == IB_PORT_ARMED) {
2117 if (ppd->is_sm_config_started == 0) {
2118 invalid = 1;
2119 smp->status |= IB_SMP_INVALID_FIELD;
2120 }
2121 }
2122 }
2123
2124 if (!invalid) {
2125 ret = set_port_states(ppd, smp, ls_new, ps_new);
2126 if (ret)
2127 return ret;
2128 }
2129
2130 return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len,
2131 max_len);
2132 }
2133
2134 static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data,
2135 struct ib_device *ibdev, u8 port,
2136 u32 *resp_len, u32 max_len)
2137 {
2138 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2139 u32 addr = OPA_AM_CI_ADDR(am);
2140 u32 len = OPA_AM_CI_LEN(am) + 1;
2141 int ret;
2142
2143 if (dd->pport->port_type != PORT_TYPE_QSFP ||
2144 smp_length_check(len, max_len)) {
2145 smp->status |= IB_SMP_INVALID_FIELD;
2146 return reply((struct ib_mad_hdr *)smp);
2147 }
2148
2149 #define __CI_PAGE_SIZE BIT(7) /* 128 bytes */
2150 #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1)
2151 #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK)
2152
2153 /*
2154 * check that addr is within spec, and
2155 * addr and (addr + len - 1) are on the same "page"
2156 */
2157 if (addr >= 4096 ||
2158 (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) {
2159 smp->status |= IB_SMP_INVALID_FIELD;
2160 return reply((struct ib_mad_hdr *)smp);
2161 }
2162
2163 ret = get_cable_info(dd, port, addr, len, data);
2164
2165 if (ret == -ENODEV) {
2166 smp->status |= IB_SMP_UNSUP_METH_ATTR;
2167 return reply((struct ib_mad_hdr *)smp);
2168 }
2169
2170 /* The address range for the CableInfo SMA query is wider than the
2171 * memory available on the QSFP cable. We want to return a valid
2172 * response, albeit zeroed out, for address ranges beyond available
2173 * memory but that are within the CableInfo query spec
2174 */
2175 if (ret < 0 && ret != -ERANGE) {
2176 smp->status |= IB_SMP_INVALID_FIELD;
2177 return reply((struct ib_mad_hdr *)smp);
2178 }
2179
2180 if (resp_len)
2181 *resp_len += len;
2182
2183 return reply((struct ib_mad_hdr *)smp);
2184 }
2185
2186 static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
2187 struct ib_device *ibdev, u8 port, u32 *resp_len,
2188 u32 max_len)
2189 {
2190 u32 num_ports = OPA_AM_NPORT(am);
2191 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2192 struct hfi1_pportdata *ppd;
2193 struct buffer_control *p = (struct buffer_control *)data;
2194 int size = sizeof(struct buffer_control);
2195
2196 if (num_ports != 1 || smp_length_check(size, max_len)) {
2197 smp->status |= IB_SMP_INVALID_FIELD;
2198 return reply((struct ib_mad_hdr *)smp);
2199 }
2200
2201 ppd = dd->pport + (port - 1);
2202 fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p);
2203 trace_bct_get(dd, p);
2204 if (resp_len)
2205 *resp_len += size;
2206
2207 return reply((struct ib_mad_hdr *)smp);
2208 }
2209
2210 static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
2211 struct ib_device *ibdev, u8 port, u32 *resp_len,
2212 u32 max_len)
2213 {
2214 u32 num_ports = OPA_AM_NPORT(am);
2215 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2216 struct hfi1_pportdata *ppd;
2217 struct buffer_control *p = (struct buffer_control *)data;
2218
2219 if (num_ports != 1 || smp_length_check(sizeof(*p), max_len)) {
2220 smp->status |= IB_SMP_INVALID_FIELD;
2221 return reply((struct ib_mad_hdr *)smp);
2222 }
2223 ppd = dd->pport + (port - 1);
2224 trace_bct_set(dd, p);
2225 if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) {
2226 smp->status |= IB_SMP_INVALID_FIELD;
2227 return reply((struct ib_mad_hdr *)smp);
2228 }
2229
2230 return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len,
2231 max_len);
2232 }
2233
2234 static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
2235 struct ib_device *ibdev, u8 port,
2236 u32 *resp_len, u32 max_len)
2237 {
2238 struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
2239 u32 num_ports = OPA_AM_NPORT(am);
2240 u8 section = (am & 0x00ff0000) >> 16;
2241 u8 *p = data;
2242 int size = 256;
2243
2244 if (num_ports != 1 || smp_length_check(size, max_len)) {
2245 smp->status |= IB_SMP_INVALID_FIELD;
2246 return reply((struct ib_mad_hdr *)smp);
2247 }
2248
2249 switch (section) {
2250 case OPA_VLARB_LOW_ELEMENTS:
2251 fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p);
2252 break;
2253 case OPA_VLARB_HIGH_ELEMENTS:
2254 fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p);
2255 break;
2256 case OPA_VLARB_PREEMPT_ELEMENTS:
2257 fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p);
2258 break;
2259 case OPA_VLARB_PREEMPT_MATRIX:
2260 fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p);
2261 break;
2262 default:
2263 pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n",
2264 be32_to_cpu(smp->attr_mod));
2265 smp->status |= IB_SMP_INVALID_FIELD;
2266 size = 0;
2267 break;
2268 }
2269
2270 if (size > 0 && resp_len)
2271 *resp_len += size;
2272
2273 return reply((struct ib_mad_hdr *)smp);
2274 }
2275
2276 static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
2277 struct ib_device *ibdev, u8 port,
2278 u32 *resp_len, u32 max_len)
2279 {
2280 struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
2281 u32 num_ports = OPA_AM_NPORT(am);
2282 u8 section = (am & 0x00ff0000) >> 16;
2283 u8 *p = data;
2284 int size = 256;
2285
2286 if (num_ports != 1 || smp_length_check(size, max_len)) {
2287 smp->status |= IB_SMP_INVALID_FIELD;
2288 return reply((struct ib_mad_hdr *)smp);
2289 }
2290
2291 switch (section) {
2292 case OPA_VLARB_LOW_ELEMENTS:
2293 (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
2294 break;
2295 case OPA_VLARB_HIGH_ELEMENTS:
2296 (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
2297 break;
2298 /*
2299 * neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX
2300 * can be changed from the default values
2301 */
2302 case OPA_VLARB_PREEMPT_ELEMENTS:
2303 /* FALLTHROUGH */
2304 case OPA_VLARB_PREEMPT_MATRIX:
2305 smp->status |= IB_SMP_UNSUP_METH_ATTR;
2306 break;
2307 default:
2308 pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n",
2309 be32_to_cpu(smp->attr_mod));
2310 smp->status |= IB_SMP_INVALID_FIELD;
2311 break;
2312 }
2313
2314 return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len,
2315 max_len);
2316 }
2317
2318 struct opa_pma_mad {
2319 struct ib_mad_hdr mad_hdr;
2320 u8 data[2024];
2321 } __packed;
2322
2323 struct opa_port_status_req {
2324 __u8 port_num;
2325 __u8 reserved[3];
2326 __be32 vl_select_mask;
2327 };
2328
2329 #define VL_MASK_ALL 0x000080ff
2330
2331 struct opa_port_status_rsp {
2332 __u8 port_num;
2333 __u8 reserved[3];
2334 __be32 vl_select_mask;
2335
2336 /* Data counters */
2337 __be64 port_xmit_data;
2338 __be64 port_rcv_data;
2339 __be64 port_xmit_pkts;
2340 __be64 port_rcv_pkts;
2341 __be64 port_multicast_xmit_pkts;
2342 __be64 port_multicast_rcv_pkts;
2343 __be64 port_xmit_wait;
2344 __be64 sw_port_congestion;
2345 __be64 port_rcv_fecn;
2346 __be64 port_rcv_becn;
2347 __be64 port_xmit_time_cong;
2348 __be64 port_xmit_wasted_bw;
2349 __be64 port_xmit_wait_data;
2350 __be64 port_rcv_bubble;
2351 __be64 port_mark_fecn;
2352 /* Error counters */
2353 __be64 port_rcv_constraint_errors;
2354 __be64 port_rcv_switch_relay_errors;
2355 __be64 port_xmit_discards;
2356 __be64 port_xmit_constraint_errors;
2357 __be64 port_rcv_remote_physical_errors;
2358 __be64 local_link_integrity_errors;
2359 __be64 port_rcv_errors;
2360 __be64 excessive_buffer_overruns;
2361 __be64 fm_config_errors;
2362 __be32 link_error_recovery;
2363 __be32 link_downed;
2364 u8 uncorrectable_errors;
2365
2366 u8 link_quality_indicator; /* 5res, 3bit */
2367 u8 res2[6];
2368 struct _vls_pctrs {
2369 /* per-VL Data counters */
2370 __be64 port_vl_xmit_data;
2371 __be64 port_vl_rcv_data;
2372 __be64 port_vl_xmit_pkts;
2373 __be64 port_vl_rcv_pkts;
2374 __be64 port_vl_xmit_wait;
2375 __be64 sw_port_vl_congestion;
2376 __be64 port_vl_rcv_fecn;
2377 __be64 port_vl_rcv_becn;
2378 __be64 port_xmit_time_cong;
2379 __be64 port_vl_xmit_wasted_bw;
2380 __be64 port_vl_xmit_wait_data;
2381 __be64 port_vl_rcv_bubble;
2382 __be64 port_vl_mark_fecn;
2383 __be64 port_vl_xmit_discards;
2384 } vls[0]; /* real array size defined by # bits set in vl_select_mask */
2385 };
2386
2387 enum counter_selects {
2388 CS_PORT_XMIT_DATA = (1 << 31),
2389 CS_PORT_RCV_DATA = (1 << 30),
2390 CS_PORT_XMIT_PKTS = (1 << 29),
2391 CS_PORT_RCV_PKTS = (1 << 28),
2392 CS_PORT_MCAST_XMIT_PKTS = (1 << 27),
2393 CS_PORT_MCAST_RCV_PKTS = (1 << 26),
2394 CS_PORT_XMIT_WAIT = (1 << 25),
2395 CS_SW_PORT_CONGESTION = (1 << 24),
2396 CS_PORT_RCV_FECN = (1 << 23),
2397 CS_PORT_RCV_BECN = (1 << 22),
2398 CS_PORT_XMIT_TIME_CONG = (1 << 21),
2399 CS_PORT_XMIT_WASTED_BW = (1 << 20),
2400 CS_PORT_XMIT_WAIT_DATA = (1 << 19),
2401 CS_PORT_RCV_BUBBLE = (1 << 18),
2402 CS_PORT_MARK_FECN = (1 << 17),
2403 CS_PORT_RCV_CONSTRAINT_ERRORS = (1 << 16),
2404 CS_PORT_RCV_SWITCH_RELAY_ERRORS = (1 << 15),
2405 CS_PORT_XMIT_DISCARDS = (1 << 14),
2406 CS_PORT_XMIT_CONSTRAINT_ERRORS = (1 << 13),
2407 CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS = (1 << 12),
2408 CS_LOCAL_LINK_INTEGRITY_ERRORS = (1 << 11),
2409 CS_PORT_RCV_ERRORS = (1 << 10),
2410 CS_EXCESSIVE_BUFFER_OVERRUNS = (1 << 9),
2411 CS_FM_CONFIG_ERRORS = (1 << 8),
2412 CS_LINK_ERROR_RECOVERY = (1 << 7),
2413 CS_LINK_DOWNED = (1 << 6),
2414 CS_UNCORRECTABLE_ERRORS = (1 << 5),
2415 };
2416
2417 struct opa_clear_port_status {
2418 __be64 port_select_mask[4];
2419 __be32 counter_select_mask;
2420 };
2421
2422 struct opa_aggregate {
2423 __be16 attr_id;
2424 __be16 err_reqlength; /* 1 bit, 8 res, 7 bit */
2425 __be32 attr_mod;
2426 u8 data[0];
2427 };
2428
2429 #define MSK_LLI 0x000000f0
2430 #define MSK_LLI_SFT 4
2431 #define MSK_LER 0x0000000f
2432 #define MSK_LER_SFT 0
2433 #define ADD_LLI 8
2434 #define ADD_LER 2
2435
2436 /* Request contains first three fields, response contains those plus the rest */
2437 struct opa_port_data_counters_msg {
2438 __be64 port_select_mask[4];
2439 __be32 vl_select_mask;
2440 __be32 resolution;
2441
2442 /* Response fields follow */
2443 struct _port_dctrs {
2444 u8 port_number;
2445 u8 reserved2[3];
2446 __be32 link_quality_indicator; /* 29res, 3bit */
2447
2448 /* Data counters */
2449 __be64 port_xmit_data;
2450 __be64 port_rcv_data;
2451 __be64 port_xmit_pkts;
2452 __be64 port_rcv_pkts;
2453 __be64 port_multicast_xmit_pkts;
2454 __be64 port_multicast_rcv_pkts;
2455 __be64 port_xmit_wait;
2456 __be64 sw_port_congestion;
2457 __be64 port_rcv_fecn;
2458 __be64 port_rcv_becn;
2459 __be64 port_xmit_time_cong;
2460 __be64 port_xmit_wasted_bw;
2461 __be64 port_xmit_wait_data;
2462 __be64 port_rcv_bubble;
2463 __be64 port_mark_fecn;
2464
2465 __be64 port_error_counter_summary;
2466 /* Sum of error counts/port */
2467
2468 struct _vls_dctrs {
2469 /* per-VL Data counters */
2470 __be64 port_vl_xmit_data;
2471 __be64 port_vl_rcv_data;
2472 __be64 port_vl_xmit_pkts;
2473 __be64 port_vl_rcv_pkts;
2474 __be64 port_vl_xmit_wait;
2475 __be64 sw_port_vl_congestion;
2476 __be64 port_vl_rcv_fecn;
2477 __be64 port_vl_rcv_becn;
2478 __be64 port_xmit_time_cong;
2479 __be64 port_vl_xmit_wasted_bw;
2480 __be64 port_vl_xmit_wait_data;
2481 __be64 port_vl_rcv_bubble;
2482 __be64 port_vl_mark_fecn;
2483 } vls[0];
2484 /* array size defined by #bits set in vl_select_mask*/
2485 } port[1]; /* array size defined by #ports in attribute modifier */
2486 };
2487
2488 struct opa_port_error_counters64_msg {
2489 /*
2490 * Request contains first two fields, response contains the
2491 * whole magilla
2492 */
2493 __be64 port_select_mask[4];
2494 __be32 vl_select_mask;
2495
2496 /* Response-only fields follow */
2497 __be32 reserved1;
2498 struct _port_ectrs {
2499 u8 port_number;
2500 u8 reserved2[7];
2501 __be64 port_rcv_constraint_errors;
2502 __be64 port_rcv_switch_relay_errors;
2503 __be64 port_xmit_discards;
2504 __be64 port_xmit_constraint_errors;
2505 __be64 port_rcv_remote_physical_errors;
2506 __be64 local_link_integrity_errors;
2507 __be64 port_rcv_errors;
2508 __be64 excessive_buffer_overruns;
2509 __be64 fm_config_errors;
2510 __be32 link_error_recovery;
2511 __be32 link_downed;
2512 u8 uncorrectable_errors;
2513 u8 reserved3[7];
2514 struct _vls_ectrs {
2515 __be64 port_vl_xmit_discards;
2516 } vls[0];
2517 /* array size defined by #bits set in vl_select_mask */
2518 } port[1]; /* array size defined by #ports in attribute modifier */
2519 };
2520
2521 struct opa_port_error_info_msg {
2522 __be64 port_select_mask[4];
2523 __be32 error_info_select_mask;
2524 __be32 reserved1;
2525 struct _port_ei {
2526 u8 port_number;
2527 u8 reserved2[7];
2528
2529 /* PortRcvErrorInfo */
2530 struct {
2531 u8 status_and_code;
2532 union {
2533 u8 raw[17];
2534 struct {
2535 /* EI1to12 format */
2536 u8 packet_flit1[8];
2537 u8 packet_flit2[8];
2538 u8 remaining_flit_bits12;
2539 } ei1to12;
2540 struct {
2541 u8 packet_bytes[8];
2542 u8 remaining_flit_bits;
2543 } ei13;
2544 } ei;
2545 u8 reserved3[6];
2546 } __packed port_rcv_ei;
2547
2548 /* ExcessiveBufferOverrunInfo */
2549 struct {
2550 u8 status_and_sc;
2551 u8 reserved4[7];
2552 } __packed excessive_buffer_overrun_ei;
2553
2554 /* PortXmitConstraintErrorInfo */
2555 struct {
2556 u8 status;
2557 u8 reserved5;
2558 __be16 pkey;
2559 __be32 slid;
2560 } __packed port_xmit_constraint_ei;
2561
2562 /* PortRcvConstraintErrorInfo */
2563 struct {
2564 u8 status;
2565 u8 reserved6;
2566 __be16 pkey;
2567 __be32 slid;
2568 } __packed port_rcv_constraint_ei;
2569
2570 /* PortRcvSwitchRelayErrorInfo */
2571 struct {
2572 u8 status_and_code;
2573 u8 reserved7[3];
2574 __u32 error_info;
2575 } __packed port_rcv_switch_relay_ei;
2576
2577 /* UncorrectableErrorInfo */
2578 struct {
2579 u8 status_and_code;
2580 u8 reserved8;
2581 } __packed uncorrectable_ei;
2582
2583 /* FMConfigErrorInfo */
2584 struct {
2585 u8 status_and_code;
2586 u8 error_info;
2587 } __packed fm_config_ei;
2588 __u32 reserved9;
2589 } port[1]; /* actual array size defined by #ports in attr modifier */
2590 };
2591
2592 /* opa_port_error_info_msg error_info_select_mask bit definitions */
2593 enum error_info_selects {
2594 ES_PORT_RCV_ERROR_INFO = (1 << 31),
2595 ES_EXCESSIVE_BUFFER_OVERRUN_INFO = (1 << 30),
2596 ES_PORT_XMIT_CONSTRAINT_ERROR_INFO = (1 << 29),
2597 ES_PORT_RCV_CONSTRAINT_ERROR_INFO = (1 << 28),
2598 ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO = (1 << 27),
2599 ES_UNCORRECTABLE_ERROR_INFO = (1 << 26),
2600 ES_FM_CONFIG_ERROR_INFO = (1 << 25)
2601 };
2602
2603 static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp,
2604 struct ib_device *ibdev, u32 *resp_len)
2605 {
2606 struct opa_class_port_info *p =
2607 (struct opa_class_port_info *)pmp->data;
2608
2609 memset(pmp->data, 0, sizeof(pmp->data));
2610
2611 if (pmp->mad_hdr.attr_mod != 0)
2612 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2613
2614 p->base_version = OPA_MGMT_BASE_VERSION;
2615 p->class_version = OPA_SM_CLASS_VERSION;
2616 /*
2617 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2618 */
2619 p->cap_mask2_resp_time = cpu_to_be32(18);
2620
2621 if (resp_len)
2622 *resp_len += sizeof(*p);
2623
2624 return reply((struct ib_mad_hdr *)pmp);
2625 }
2626
2627 static void a0_portstatus(struct hfi1_pportdata *ppd,
2628 struct opa_port_status_rsp *rsp, u32 vl_select_mask)
2629 {
2630 if (!is_bx(ppd->dd)) {
2631 unsigned long vl;
2632 u64 sum_vl_xmit_wait = 0;
2633 u32 vl_all_mask = VL_MASK_ALL;
2634
2635 for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
2636 8 * sizeof(vl_all_mask)) {
2637 u64 tmp = sum_vl_xmit_wait +
2638 read_port_cntr(ppd, C_TX_WAIT_VL,
2639 idx_from_vl(vl));
2640 if (tmp < sum_vl_xmit_wait) {
2641 /* we wrapped */
2642 sum_vl_xmit_wait = (u64)~0;
2643 break;
2644 }
2645 sum_vl_xmit_wait = tmp;
2646 }
2647 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2648 rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2649 }
2650 }
2651
2652 /**
2653 * tx_link_width - convert link width bitmask to integer
2654 * value representing actual link width.
2655 * @link_width: width of active link
2656 * @return: return index of the bit set in link_width var
2657 *
2658 * The function convert and return the index of bit set
2659 * that indicate the current link width.
2660 */
2661 u16 tx_link_width(u16 link_width)
2662 {
2663 int n = LINK_WIDTH_DEFAULT;
2664 u16 tx_width = n;
2665
2666 while (link_width && n) {
2667 if (link_width & (1 << (n - 1))) {
2668 tx_width = n;
2669 break;
2670 }
2671 n--;
2672 }
2673
2674 return tx_width;
2675 }
2676
2677 /**
2678 * get_xmit_wait_counters - Convert HFI 's SendWaitCnt/SendWaitVlCnt
2679 * counter in unit of TXE cycle times to flit times.
2680 * @ppd: info of physical Hfi port
2681 * @link_width: width of active link
2682 * @link_speed: speed of active link
2683 * @vl: represent VL0-VL7, VL15 for PortVLXmitWait counters request
2684 * and if vl value is C_VL_COUNT, it represent SendWaitCnt
2685 * counter request
2686 * @return: return SendWaitCnt/SendWaitVlCnt counter value per vl.
2687 *
2688 * Convert SendWaitCnt/SendWaitVlCnt counter from TXE cycle times to
2689 * flit times. Call this function to samples these counters. This
2690 * function will calculate for previous state transition and update
2691 * current state at end of function using ppd->prev_link_width and
2692 * ppd->port_vl_xmit_wait_last to port_vl_xmit_wait_curr and link_width.
2693 */
2694 u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd,
2695 u16 link_width, u16 link_speed, int vl)
2696 {
2697 u64 port_vl_xmit_wait_curr;
2698 u64 delta_vl_xmit_wait;
2699 u64 xmit_wait_val;
2700
2701 if (vl > C_VL_COUNT)
2702 return 0;
2703 if (vl < C_VL_COUNT)
2704 port_vl_xmit_wait_curr =
2705 read_port_cntr(ppd, C_TX_WAIT_VL, vl);
2706 else
2707 port_vl_xmit_wait_curr =
2708 read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL);
2709
2710 xmit_wait_val =
2711 port_vl_xmit_wait_curr -
2712 ppd->port_vl_xmit_wait_last[vl];
2713 delta_vl_xmit_wait =
2714 convert_xmit_counter(xmit_wait_val,
2715 ppd->prev_link_width,
2716 link_speed);
2717
2718 ppd->vl_xmit_flit_cnt[vl] += delta_vl_xmit_wait;
2719 ppd->port_vl_xmit_wait_last[vl] = port_vl_xmit_wait_curr;
2720 ppd->prev_link_width = link_width;
2721
2722 return ppd->vl_xmit_flit_cnt[vl];
2723 }
2724
2725 static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
2726 struct ib_device *ibdev,
2727 u8 port, u32 *resp_len)
2728 {
2729 struct opa_port_status_req *req =
2730 (struct opa_port_status_req *)pmp->data;
2731 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2732 struct opa_port_status_rsp *rsp;
2733 u32 vl_select_mask = be32_to_cpu(req->vl_select_mask);
2734 unsigned long vl;
2735 size_t response_data_size;
2736 u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2737 u8 port_num = req->port_num;
2738 u8 num_vls = hweight32(vl_select_mask);
2739 struct _vls_pctrs *vlinfo;
2740 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2741 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2742 int vfi;
2743 u64 tmp, tmp2;
2744 u16 link_width;
2745 u16 link_speed;
2746
2747 response_data_size = sizeof(struct opa_port_status_rsp) +
2748 num_vls * sizeof(struct _vls_pctrs);
2749 if (response_data_size > sizeof(pmp->data)) {
2750 pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE;
2751 return reply((struct ib_mad_hdr *)pmp);
2752 }
2753
2754 if (nports != 1 || (port_num && port_num != port) ||
2755 num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) {
2756 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2757 return reply((struct ib_mad_hdr *)pmp);
2758 }
2759
2760 memset(pmp->data, 0, sizeof(pmp->data));
2761
2762 rsp = (struct opa_port_status_rsp *)pmp->data;
2763 if (port_num)
2764 rsp->port_num = port_num;
2765 else
2766 rsp->port_num = port;
2767
2768 rsp->port_rcv_constraint_errors =
2769 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2770 CNTR_INVALID_VL));
2771
2772 hfi1_read_link_quality(dd, &rsp->link_quality_indicator);
2773
2774 rsp->vl_select_mask = cpu_to_be32(vl_select_mask);
2775 rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2776 CNTR_INVALID_VL));
2777 rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2778 CNTR_INVALID_VL));
2779 rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2780 CNTR_INVALID_VL));
2781 rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2782 CNTR_INVALID_VL));
2783 rsp->port_multicast_xmit_pkts =
2784 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2785 CNTR_INVALID_VL));
2786 rsp->port_multicast_rcv_pkts =
2787 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2788 CNTR_INVALID_VL));
2789 /*
2790 * Convert PortXmitWait counter from TXE cycle times
2791 * to flit times.
2792 */
2793 link_width =
2794 tx_link_width(ppd->link_width_downgrade_tx_active);
2795 link_speed = get_link_speed(ppd->link_speed_active);
2796 rsp->port_xmit_wait =
2797 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
2798 link_speed, C_VL_COUNT));
2799 rsp->port_rcv_fecn =
2800 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2801 rsp->port_rcv_becn =
2802 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2803 rsp->port_xmit_discards =
2804 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2805 CNTR_INVALID_VL));
2806 rsp->port_xmit_constraint_errors =
2807 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2808 CNTR_INVALID_VL));
2809 rsp->port_rcv_remote_physical_errors =
2810 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2811 CNTR_INVALID_VL));
2812 rsp->local_link_integrity_errors =
2813 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
2814 CNTR_INVALID_VL));
2815 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2816 tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2817 CNTR_INVALID_VL);
2818 if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2819 /* overflow/wrapped */
2820 rsp->link_error_recovery = cpu_to_be32(~0);
2821 } else {
2822 rsp->link_error_recovery = cpu_to_be32(tmp2);
2823 }
2824 rsp->port_rcv_errors =
2825 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2826 rsp->excessive_buffer_overruns =
2827 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2828 rsp->fm_config_errors =
2829 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2830 CNTR_INVALID_VL));
2831 rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2832 CNTR_INVALID_VL));
2833
2834 /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */
2835 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2836 rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2837
2838 vlinfo = &rsp->vls[0];
2839 vfi = 0;
2840 /* The vl_select_mask has been checked above, and we know
2841 * that it contains only entries which represent valid VLs.
2842 * So in the for_each_set_bit() loop below, we don't need
2843 * any additional checks for vl.
2844 */
2845 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2846 8 * sizeof(vl_select_mask)) {
2847 memset(vlinfo, 0, sizeof(*vlinfo));
2848
2849 tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
2850 rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
2851
2852 rsp->vls[vfi].port_vl_rcv_pkts =
2853 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2854 idx_from_vl(vl)));
2855
2856 rsp->vls[vfi].port_vl_xmit_data =
2857 cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2858 idx_from_vl(vl)));
2859
2860 rsp->vls[vfi].port_vl_xmit_pkts =
2861 cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2862 idx_from_vl(vl)));
2863 /*
2864 * Convert PortVlXmitWait counter from TXE cycle
2865 * times to flit times.
2866 */
2867 rsp->vls[vfi].port_vl_xmit_wait =
2868 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
2869 link_speed,
2870 idx_from_vl(vl)));
2871
2872 rsp->vls[vfi].port_vl_rcv_fecn =
2873 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2874 idx_from_vl(vl)));
2875
2876 rsp->vls[vfi].port_vl_rcv_becn =
2877 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2878 idx_from_vl(vl)));
2879
2880 rsp->vls[vfi].port_vl_xmit_discards =
2881 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
2882 idx_from_vl(vl)));
2883 vlinfo++;
2884 vfi++;
2885 }
2886
2887 a0_portstatus(ppd, rsp, vl_select_mask);
2888
2889 if (resp_len)
2890 *resp_len += response_data_size;
2891
2892 return reply((struct ib_mad_hdr *)pmp);
2893 }
2894
2895 static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port,
2896 u8 res_lli, u8 res_ler)
2897 {
2898 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2899 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2900 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2901 u64 error_counter_summary = 0, tmp;
2902
2903 error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2904 CNTR_INVALID_VL);
2905 /* port_rcv_switch_relay_errors is 0 for HFIs */
2906 error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD,
2907 CNTR_INVALID_VL);
2908 error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2909 CNTR_INVALID_VL);
2910 error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2911 CNTR_INVALID_VL);
2912 /* local link integrity must be right-shifted by the lli resolution */
2913 error_counter_summary += (read_dev_cntr(dd, C_DC_RX_REPLAY,
2914 CNTR_INVALID_VL) >> res_lli);
2915 /* link error recovery must b right-shifted by the ler resolution */
2916 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2917 tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
2918 error_counter_summary += (tmp >> res_ler);
2919 error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR,
2920 CNTR_INVALID_VL);
2921 error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL);
2922 error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2923 CNTR_INVALID_VL);
2924 /* ppd->link_downed is a 32-bit value */
2925 error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN,
2926 CNTR_INVALID_VL);
2927 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2928 /* this is an 8-bit quantity */
2929 error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff;
2930
2931 return error_counter_summary;
2932 }
2933
2934 static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp,
2935 u32 vl_select_mask)
2936 {
2937 if (!is_bx(ppd->dd)) {
2938 unsigned long vl;
2939 u64 sum_vl_xmit_wait = 0;
2940 u32 vl_all_mask = VL_MASK_ALL;
2941
2942 for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
2943 8 * sizeof(vl_all_mask)) {
2944 u64 tmp = sum_vl_xmit_wait +
2945 read_port_cntr(ppd, C_TX_WAIT_VL,
2946 idx_from_vl(vl));
2947 if (tmp < sum_vl_xmit_wait) {
2948 /* we wrapped */
2949 sum_vl_xmit_wait = (u64)~0;
2950 break;
2951 }
2952 sum_vl_xmit_wait = tmp;
2953 }
2954 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2955 rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2956 }
2957 }
2958
2959 static void pma_get_opa_port_dctrs(struct ib_device *ibdev,
2960 struct _port_dctrs *rsp)
2961 {
2962 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2963
2964 rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2965 CNTR_INVALID_VL));
2966 rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2967 CNTR_INVALID_VL));
2968 rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2969 CNTR_INVALID_VL));
2970 rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2971 CNTR_INVALID_VL));
2972 rsp->port_multicast_xmit_pkts =
2973 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2974 CNTR_INVALID_VL));
2975 rsp->port_multicast_rcv_pkts =
2976 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2977 CNTR_INVALID_VL));
2978 }
2979
2980 static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
2981 struct ib_device *ibdev,
2982 u8 port, u32 *resp_len)
2983 {
2984 struct opa_port_data_counters_msg *req =
2985 (struct opa_port_data_counters_msg *)pmp->data;
2986 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2987 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2988 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2989 struct _port_dctrs *rsp;
2990 struct _vls_dctrs *vlinfo;
2991 size_t response_data_size;
2992 u32 num_ports;
2993 u8 lq, num_vls;
2994 u8 res_lli, res_ler;
2995 u64 port_mask;
2996 u8 port_num;
2997 unsigned long vl;
2998 u32 vl_select_mask;
2999 int vfi;
3000 u16 link_width;
3001 u16 link_speed;
3002
3003 num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3004 num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
3005 vl_select_mask = be32_to_cpu(req->vl_select_mask);
3006 res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT;
3007 res_lli = res_lli ? res_lli + ADD_LLI : 0;
3008 res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT;
3009 res_ler = res_ler ? res_ler + ADD_LER : 0;
3010
3011 if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) {
3012 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3013 return reply((struct ib_mad_hdr *)pmp);
3014 }
3015
3016 /* Sanity check */
3017 response_data_size = sizeof(struct opa_port_data_counters_msg) +
3018 num_vls * sizeof(struct _vls_dctrs);
3019
3020 if (response_data_size > sizeof(pmp->data)) {
3021 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3022 return reply((struct ib_mad_hdr *)pmp);
3023 }
3024
3025 /*
3026 * The bit set in the mask needs to be consistent with the
3027 * port the request came in on.
3028 */
3029 port_mask = be64_to_cpu(req->port_select_mask[3]);
3030 port_num = find_first_bit((unsigned long *)&port_mask,
3031 sizeof(port_mask) * 8);
3032
3033 if (port_num != port) {
3034 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3035 return reply((struct ib_mad_hdr *)pmp);
3036 }
3037
3038 rsp = &req->port[0];
3039 memset(rsp, 0, sizeof(*rsp));
3040
3041 rsp->port_number = port;
3042 /*
3043 * Note that link_quality_indicator is a 32 bit quantity in
3044 * 'datacounters' queries (as opposed to 'portinfo' queries,
3045 * where it's a byte).
3046 */
3047 hfi1_read_link_quality(dd, &lq);
3048 rsp->link_quality_indicator = cpu_to_be32((u32)lq);
3049 pma_get_opa_port_dctrs(ibdev, rsp);
3050
3051 /*
3052 * Convert PortXmitWait counter from TXE
3053 * cycle times to flit times.
3054 */
3055 link_width =
3056 tx_link_width(ppd->link_width_downgrade_tx_active);
3057 link_speed = get_link_speed(ppd->link_speed_active);
3058 rsp->port_xmit_wait =
3059 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
3060 link_speed, C_VL_COUNT));
3061 rsp->port_rcv_fecn =
3062 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
3063 rsp->port_rcv_becn =
3064 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
3065 rsp->port_error_counter_summary =
3066 cpu_to_be64(get_error_counter_summary(ibdev, port,
3067 res_lli, res_ler));
3068
3069 vlinfo = &rsp->vls[0];
3070 vfi = 0;
3071 /* The vl_select_mask has been checked above, and we know
3072 * that it contains only entries which represent valid VLs.
3073 * So in the for_each_set_bit() loop below, we don't need
3074 * any additional checks for vl.
3075 */
3076 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
3077 8 * sizeof(req->vl_select_mask)) {
3078 memset(vlinfo, 0, sizeof(*vlinfo));
3079
3080 rsp->vls[vfi].port_vl_xmit_data =
3081 cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
3082 idx_from_vl(vl)));
3083
3084 rsp->vls[vfi].port_vl_rcv_data =
3085 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
3086 idx_from_vl(vl)));
3087
3088 rsp->vls[vfi].port_vl_xmit_pkts =
3089 cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
3090 idx_from_vl(vl)));
3091
3092 rsp->vls[vfi].port_vl_rcv_pkts =
3093 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
3094 idx_from_vl(vl)));
3095
3096 /*
3097 * Convert PortVlXmitWait counter from TXE
3098 * cycle times to flit times.
3099 */
3100 rsp->vls[vfi].port_vl_xmit_wait =
3101 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
3102 link_speed,
3103 idx_from_vl(vl)));
3104
3105 rsp->vls[vfi].port_vl_rcv_fecn =
3106 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
3107 idx_from_vl(vl)));
3108 rsp->vls[vfi].port_vl_rcv_becn =
3109 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
3110 idx_from_vl(vl)));
3111
3112 /* rsp->port_vl_xmit_time_cong is 0 for HFIs */
3113 /* rsp->port_vl_xmit_wasted_bw ??? */
3114 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ???
3115 * does this differ from rsp->vls[vfi].port_vl_xmit_wait
3116 */
3117 /*rsp->vls[vfi].port_vl_mark_fecn =
3118 * cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT
3119 * + offset));
3120 */
3121 vlinfo++;
3122 vfi++;
3123 }
3124
3125 a0_datacounters(ppd, rsp, vl_select_mask);
3126
3127 if (resp_len)
3128 *resp_len += response_data_size;
3129
3130 return reply((struct ib_mad_hdr *)pmp);
3131 }
3132
3133 static int pma_get_ib_portcounters_ext(struct ib_pma_mad *pmp,
3134 struct ib_device *ibdev, u8 port)
3135 {
3136 struct ib_pma_portcounters_ext *p = (struct ib_pma_portcounters_ext *)
3137 pmp->data;
3138 struct _port_dctrs rsp;
3139
3140 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
3141 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3142 goto bail;
3143 }
3144
3145 memset(&rsp, 0, sizeof(rsp));
3146 pma_get_opa_port_dctrs(ibdev, &rsp);
3147
3148 p->port_xmit_data = rsp.port_xmit_data;
3149 p->port_rcv_data = rsp.port_rcv_data;
3150 p->port_xmit_packets = rsp.port_xmit_pkts;
3151 p->port_rcv_packets = rsp.port_rcv_pkts;
3152 p->port_unicast_xmit_packets = 0;
3153 p->port_unicast_rcv_packets = 0;
3154 p->port_multicast_xmit_packets = rsp.port_multicast_xmit_pkts;
3155 p->port_multicast_rcv_packets = rsp.port_multicast_rcv_pkts;
3156
3157 bail:
3158 return reply((struct ib_mad_hdr *)pmp);
3159 }
3160
3161 static void pma_get_opa_port_ectrs(struct ib_device *ibdev,
3162 struct _port_ectrs *rsp, u8 port)
3163 {
3164 u64 tmp, tmp2;
3165 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3166 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3167 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3168
3169 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
3170 tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3171 CNTR_INVALID_VL);
3172 if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
3173 /* overflow/wrapped */
3174 rsp->link_error_recovery = cpu_to_be32(~0);
3175 } else {
3176 rsp->link_error_recovery = cpu_to_be32(tmp2);
3177 }
3178
3179 rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
3180 CNTR_INVALID_VL));
3181 rsp->port_rcv_errors =
3182 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
3183 rsp->port_rcv_remote_physical_errors =
3184 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
3185 CNTR_INVALID_VL));
3186 rsp->port_rcv_switch_relay_errors = 0;
3187 rsp->port_xmit_discards =
3188 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
3189 CNTR_INVALID_VL));
3190 rsp->port_xmit_constraint_errors =
3191 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
3192 CNTR_INVALID_VL));
3193 rsp->port_rcv_constraint_errors =
3194 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
3195 CNTR_INVALID_VL));
3196 rsp->local_link_integrity_errors =
3197 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
3198 CNTR_INVALID_VL));
3199 rsp->excessive_buffer_overruns =
3200 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
3201 }
3202
3203 static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
3204 struct ib_device *ibdev,
3205 u8 port, u32 *resp_len)
3206 {
3207 size_t response_data_size;
3208 struct _port_ectrs *rsp;
3209 u8 port_num;
3210 struct opa_port_error_counters64_msg *req;
3211 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3212 u32 num_ports;
3213 u8 num_pslm;
3214 u8 num_vls;
3215 struct hfi1_ibport *ibp;
3216 struct hfi1_pportdata *ppd;
3217 struct _vls_ectrs *vlinfo;
3218 unsigned long vl;
3219 u64 port_mask, tmp;
3220 u32 vl_select_mask;
3221 int vfi;
3222
3223 req = (struct opa_port_error_counters64_msg *)pmp->data;
3224
3225 num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3226
3227 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3228 num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
3229
3230 if (num_ports != 1 || num_ports != num_pslm) {
3231 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3232 return reply((struct ib_mad_hdr *)pmp);
3233 }
3234
3235 response_data_size = sizeof(struct opa_port_error_counters64_msg) +
3236 num_vls * sizeof(struct _vls_ectrs);
3237
3238 if (response_data_size > sizeof(pmp->data)) {
3239 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3240 return reply((struct ib_mad_hdr *)pmp);
3241 }
3242 /*
3243 * The bit set in the mask needs to be consistent with the
3244 * port the request came in on.
3245 */
3246 port_mask = be64_to_cpu(req->port_select_mask[3]);
3247 port_num = find_first_bit((unsigned long *)&port_mask,
3248 sizeof(port_mask) * 8);
3249
3250 if (port_num != port) {
3251 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3252 return reply((struct ib_mad_hdr *)pmp);
3253 }
3254
3255 rsp = &req->port[0];
3256
3257 ibp = to_iport(ibdev, port_num);
3258 ppd = ppd_from_ibp(ibp);
3259
3260 memset(rsp, 0, sizeof(*rsp));
3261 rsp->port_number = port_num;
3262
3263 pma_get_opa_port_ectrs(ibdev, rsp, port_num);
3264
3265 rsp->port_rcv_remote_physical_errors =
3266 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
3267 CNTR_INVALID_VL));
3268 rsp->fm_config_errors =
3269 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
3270 CNTR_INVALID_VL));
3271 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
3272
3273 rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
3274 rsp->port_rcv_errors =
3275 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
3276 vlinfo = &rsp->vls[0];
3277 vfi = 0;
3278 vl_select_mask = be32_to_cpu(req->vl_select_mask);
3279 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
3280 8 * sizeof(req->vl_select_mask)) {
3281 memset(vlinfo, 0, sizeof(*vlinfo));
3282 rsp->vls[vfi].port_vl_xmit_discards =
3283 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
3284 idx_from_vl(vl)));
3285 vlinfo += 1;
3286 vfi++;
3287 }
3288
3289 if (resp_len)
3290 *resp_len += response_data_size;
3291
3292 return reply((struct ib_mad_hdr *)pmp);
3293 }
3294
3295 static int pma_get_ib_portcounters(struct ib_pma_mad *pmp,
3296 struct ib_device *ibdev, u8 port)
3297 {
3298 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
3299 pmp->data;
3300 struct _port_ectrs rsp;
3301 u64 temp_link_overrun_errors;
3302 u64 temp_64;
3303 u32 temp_32;
3304
3305 memset(&rsp, 0, sizeof(rsp));
3306 pma_get_opa_port_ectrs(ibdev, &rsp, port);
3307
3308 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
3309 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3310 goto bail;
3311 }
3312
3313 p->symbol_error_counter = 0; /* N/A for OPA */
3314
3315 temp_32 = be32_to_cpu(rsp.link_error_recovery);
3316 if (temp_32 > 0xFFUL)
3317 p->link_error_recovery_counter = 0xFF;
3318 else
3319 p->link_error_recovery_counter = (u8)temp_32;
3320
3321 temp_32 = be32_to_cpu(rsp.link_downed);
3322 if (temp_32 > 0xFFUL)
3323 p->link_downed_counter = 0xFF;
3324 else
3325 p->link_downed_counter = (u8)temp_32;
3326
3327 temp_64 = be64_to_cpu(rsp.port_rcv_errors);
3328 if (temp_64 > 0xFFFFUL)
3329 p->port_rcv_errors = cpu_to_be16(0xFFFF);
3330 else
3331 p->port_rcv_errors = cpu_to_be16((u16)temp_64);
3332
3333 temp_64 = be64_to_cpu(rsp.port_rcv_remote_physical_errors);
3334 if (temp_64 > 0xFFFFUL)
3335 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
3336 else
3337 p->port_rcv_remphys_errors = cpu_to_be16((u16)temp_64);
3338
3339 temp_64 = be64_to_cpu(rsp.port_rcv_switch_relay_errors);
3340 p->port_rcv_switch_relay_errors = cpu_to_be16((u16)temp_64);
3341
3342 temp_64 = be64_to_cpu(rsp.port_xmit_discards);
3343 if (temp_64 > 0xFFFFUL)
3344 p->port_xmit_discards = cpu_to_be16(0xFFFF);
3345 else
3346 p->port_xmit_discards = cpu_to_be16((u16)temp_64);
3347
3348 temp_64 = be64_to_cpu(rsp.port_xmit_constraint_errors);
3349 if (temp_64 > 0xFFUL)
3350 p->port_xmit_constraint_errors = 0xFF;
3351 else
3352 p->port_xmit_constraint_errors = (u8)temp_64;
3353
3354 temp_64 = be64_to_cpu(rsp.port_rcv_constraint_errors);
3355 if (temp_64 > 0xFFUL)
3356 p->port_rcv_constraint_errors = 0xFFUL;
3357 else
3358 p->port_rcv_constraint_errors = (u8)temp_64;
3359
3360 /* LocalLink: 7:4, BufferOverrun: 3:0 */
3361 temp_64 = be64_to_cpu(rsp.local_link_integrity_errors);
3362 if (temp_64 > 0xFUL)
3363 temp_64 = 0xFUL;
3364
3365 temp_link_overrun_errors = temp_64 << 4;
3366
3367 temp_64 = be64_to_cpu(rsp.excessive_buffer_overruns);
3368 if (temp_64 > 0xFUL)
3369 temp_64 = 0xFUL;
3370 temp_link_overrun_errors |= temp_64;
3371
3372 p->link_overrun_errors = (u8)temp_link_overrun_errors;
3373
3374 p->vl15_dropped = 0; /* N/A for OPA */
3375
3376 bail:
3377 return reply((struct ib_mad_hdr *)pmp);
3378 }
3379
3380 static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp,
3381 struct ib_device *ibdev,
3382 u8 port, u32 *resp_len)
3383 {
3384 size_t response_data_size;
3385 struct _port_ei *rsp;
3386 struct opa_port_error_info_msg *req;
3387 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3388 u64 port_mask;
3389 u32 num_ports;
3390 u8 port_num;
3391 u8 num_pslm;
3392 u64 reg;
3393
3394 req = (struct opa_port_error_info_msg *)pmp->data;
3395 rsp = &req->port[0];
3396
3397 num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3398 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3399
3400 memset(rsp, 0, sizeof(*rsp));
3401
3402 if (num_ports != 1 || num_ports != num_pslm) {
3403 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3404 return reply((struct ib_mad_hdr *)pmp);
3405 }
3406
3407 /* Sanity check */
3408 response_data_size = sizeof(struct opa_port_error_info_msg);
3409
3410 if (response_data_size > sizeof(pmp->data)) {
3411 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3412 return reply((struct ib_mad_hdr *)pmp);
3413 }
3414
3415 /*
3416 * The bit set in the mask needs to be consistent with the port
3417 * the request came in on.
3418 */
3419 port_mask = be64_to_cpu(req->port_select_mask[3]);
3420 port_num = find_first_bit((unsigned long *)&port_mask,
3421 sizeof(port_mask) * 8);
3422
3423 if (port_num != port) {
3424 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3425 return reply((struct ib_mad_hdr *)pmp);
3426 }
3427
3428 /* PortRcvErrorInfo */
3429 rsp->port_rcv_ei.status_and_code =
3430 dd->err_info_rcvport.status_and_code;
3431 memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1,
3432 &dd->err_info_rcvport.packet_flit1, sizeof(u64));
3433 memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2,
3434 &dd->err_info_rcvport.packet_flit2, sizeof(u64));
3435
3436 /* ExcessiverBufferOverrunInfo */
3437 reg = read_csr(dd, RCV_ERR_INFO);
3438 if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) {
3439 /*
3440 * if the RcvExcessBufferOverrun bit is set, save SC of
3441 * first pkt that encountered an excess buffer overrun
3442 */
3443 u8 tmp = (u8)reg;
3444
3445 tmp &= RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK;
3446 tmp <<= 2;
3447 rsp->excessive_buffer_overrun_ei.status_and_sc = tmp;
3448 /* set the status bit */
3449 rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80;
3450 }
3451
3452 rsp->port_xmit_constraint_ei.status =
3453 dd->err_info_xmit_constraint.status;
3454 rsp->port_xmit_constraint_ei.pkey =
3455 cpu_to_be16(dd->err_info_xmit_constraint.pkey);
3456 rsp->port_xmit_constraint_ei.slid =
3457 cpu_to_be32(dd->err_info_xmit_constraint.slid);
3458
3459 rsp->port_rcv_constraint_ei.status =
3460 dd->err_info_rcv_constraint.status;
3461 rsp->port_rcv_constraint_ei.pkey =
3462 cpu_to_be16(dd->err_info_rcv_constraint.pkey);
3463 rsp->port_rcv_constraint_ei.slid =
3464 cpu_to_be32(dd->err_info_rcv_constraint.slid);
3465
3466 /* UncorrectableErrorInfo */
3467 rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable;
3468
3469 /* FMConfigErrorInfo */
3470 rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig;
3471
3472 if (resp_len)
3473 *resp_len += response_data_size;
3474
3475 return reply((struct ib_mad_hdr *)pmp);
3476 }
3477
3478 static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
3479 struct ib_device *ibdev,
3480 u8 port, u32 *resp_len)
3481 {
3482 struct opa_clear_port_status *req =
3483 (struct opa_clear_port_status *)pmp->data;
3484 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3485 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3486 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3487 u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3488 u64 portn = be64_to_cpu(req->port_select_mask[3]);
3489 u32 counter_select = be32_to_cpu(req->counter_select_mask);
3490 u32 vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */
3491 unsigned long vl;
3492
3493 if ((nports != 1) || (portn != 1 << port)) {
3494 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3495 return reply((struct ib_mad_hdr *)pmp);
3496 }
3497 /*
3498 * only counters returned by pma_get_opa_portstatus() are
3499 * handled, so when pma_get_opa_portstatus() gets a fix,
3500 * the corresponding change should be made here as well.
3501 */
3502
3503 if (counter_select & CS_PORT_XMIT_DATA)
3504 write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0);
3505
3506 if (counter_select & CS_PORT_RCV_DATA)
3507 write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0);
3508
3509 if (counter_select & CS_PORT_XMIT_PKTS)
3510 write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3511
3512 if (counter_select & CS_PORT_RCV_PKTS)
3513 write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0);
3514
3515 if (counter_select & CS_PORT_MCAST_XMIT_PKTS)
3516 write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3517
3518 if (counter_select & CS_PORT_MCAST_RCV_PKTS)
3519 write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
3520
3521 if (counter_select & CS_PORT_XMIT_WAIT) {
3522 write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
3523 ppd->port_vl_xmit_wait_last[C_VL_COUNT] = 0;
3524 ppd->vl_xmit_flit_cnt[C_VL_COUNT] = 0;
3525 }
3526 /* ignore cs_sw_portCongestion for HFIs */
3527
3528 if (counter_select & CS_PORT_RCV_FECN)
3529 write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0);
3530
3531 if (counter_select & CS_PORT_RCV_BECN)
3532 write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0);
3533
3534 /* ignore cs_port_xmit_time_cong for HFIs */
3535 /* ignore cs_port_xmit_wasted_bw for now */
3536 /* ignore cs_port_xmit_wait_data for now */
3537 if (counter_select & CS_PORT_RCV_BUBBLE)
3538 write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0);
3539
3540 /* Only applicable for switch */
3541 /* if (counter_select & CS_PORT_MARK_FECN)
3542 * write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);
3543 */
3544
3545 if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS)
3546 write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0);
3547
3548 /* ignore cs_port_rcv_switch_relay_errors for HFIs */
3549 if (counter_select & CS_PORT_XMIT_DISCARDS)
3550 write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0);
3551
3552 if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS)
3553 write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0);
3554
3555 if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
3556 write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
3557
3558 if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS)
3559 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3560
3561 if (counter_select & CS_LINK_ERROR_RECOVERY) {
3562 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3563 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3564 CNTR_INVALID_VL, 0);
3565 }
3566
3567 if (counter_select & CS_PORT_RCV_ERRORS)
3568 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3569
3570 if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) {
3571 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3572 dd->rcv_ovfl_cnt = 0;
3573 }
3574
3575 if (counter_select & CS_FM_CONFIG_ERRORS)
3576 write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0);
3577
3578 if (counter_select & CS_LINK_DOWNED)
3579 write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0);
3580
3581 if (counter_select & CS_UNCORRECTABLE_ERRORS)
3582 write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0);
3583
3584 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
3585 8 * sizeof(vl_select_mask)) {
3586 if (counter_select & CS_PORT_XMIT_DATA)
3587 write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0);
3588
3589 if (counter_select & CS_PORT_RCV_DATA)
3590 write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0);
3591
3592 if (counter_select & CS_PORT_XMIT_PKTS)
3593 write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0);
3594
3595 if (counter_select & CS_PORT_RCV_PKTS)
3596 write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
3597
3598 if (counter_select & CS_PORT_XMIT_WAIT) {
3599 write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
3600 ppd->port_vl_xmit_wait_last[idx_from_vl(vl)] = 0;
3601 ppd->vl_xmit_flit_cnt[idx_from_vl(vl)] = 0;
3602 }
3603
3604 /* sw_port_vl_congestion is 0 for HFIs */
3605 if (counter_select & CS_PORT_RCV_FECN)
3606 write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0);
3607
3608 if (counter_select & CS_PORT_RCV_BECN)
3609 write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0);
3610
3611 /* port_vl_xmit_time_cong is 0 for HFIs */
3612 /* port_vl_xmit_wasted_bw ??? */
3613 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */
3614 if (counter_select & CS_PORT_RCV_BUBBLE)
3615 write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0);
3616
3617 /* if (counter_select & CS_PORT_MARK_FECN)
3618 * write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
3619 */
3620 if (counter_select & C_SW_XMIT_DSCD_VL)
3621 write_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
3622 idx_from_vl(vl), 0);
3623 }
3624
3625 if (resp_len)
3626 *resp_len += sizeof(*req);
3627
3628 return reply((struct ib_mad_hdr *)pmp);
3629 }
3630
3631 static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp,
3632 struct ib_device *ibdev,
3633 u8 port, u32 *resp_len)
3634 {
3635 struct _port_ei *rsp;
3636 struct opa_port_error_info_msg *req;
3637 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3638 u64 port_mask;
3639 u32 num_ports;
3640 u8 port_num;
3641 u8 num_pslm;
3642 u32 error_info_select;
3643
3644 req = (struct opa_port_error_info_msg *)pmp->data;
3645 rsp = &req->port[0];
3646
3647 num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3648 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3649
3650 memset(rsp, 0, sizeof(*rsp));
3651
3652 if (num_ports != 1 || num_ports != num_pslm) {
3653 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3654 return reply((struct ib_mad_hdr *)pmp);
3655 }
3656
3657 /*
3658 * The bit set in the mask needs to be consistent with the port
3659 * the request came in on.
3660 */
3661 port_mask = be64_to_cpu(req->port_select_mask[3]);
3662 port_num = find_first_bit((unsigned long *)&port_mask,
3663 sizeof(port_mask) * 8);
3664
3665 if (port_num != port) {
3666 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3667 return reply((struct ib_mad_hdr *)pmp);
3668 }
3669
3670 error_info_select = be32_to_cpu(req->error_info_select_mask);
3671
3672 /* PortRcvErrorInfo */
3673 if (error_info_select & ES_PORT_RCV_ERROR_INFO)
3674 /* turn off status bit */
3675 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3676
3677 /* ExcessiverBufferOverrunInfo */
3678 if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO)
3679 /*
3680 * status bit is essentially kept in the h/w - bit 5 of
3681 * RCV_ERR_INFO
3682 */
3683 write_csr(dd, RCV_ERR_INFO,
3684 RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK);
3685
3686 if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO)
3687 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3688
3689 if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO)
3690 dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK;
3691
3692 /* UncorrectableErrorInfo */
3693 if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO)
3694 /* turn off status bit */
3695 dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK;
3696
3697 /* FMConfigErrorInfo */
3698 if (error_info_select & ES_FM_CONFIG_ERROR_INFO)
3699 /* turn off status bit */
3700 dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK;
3701
3702 if (resp_len)
3703 *resp_len += sizeof(*req);
3704
3705 return reply((struct ib_mad_hdr *)pmp);
3706 }
3707
3708 struct opa_congestion_info_attr {
3709 __be16 congestion_info;
3710 u8 control_table_cap; /* Multiple of 64 entry unit CCTs */
3711 u8 congestion_log_length;
3712 } __packed;
3713
3714 static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data,
3715 struct ib_device *ibdev, u8 port,
3716 u32 *resp_len, u32 max_len)
3717 {
3718 struct opa_congestion_info_attr *p =
3719 (struct opa_congestion_info_attr *)data;
3720 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3721 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3722
3723 if (smp_length_check(sizeof(*p), max_len)) {
3724 smp->status |= IB_SMP_INVALID_FIELD;
3725 return reply((struct ib_mad_hdr *)smp);
3726 }
3727
3728 p->congestion_info = 0;
3729 p->control_table_cap = ppd->cc_max_table_entries;
3730 p->congestion_log_length = OPA_CONG_LOG_ELEMS;
3731
3732 if (resp_len)
3733 *resp_len += sizeof(*p);
3734
3735 return reply((struct ib_mad_hdr *)smp);
3736 }
3737
3738 static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am,
3739 u8 *data, struct ib_device *ibdev,
3740 u8 port, u32 *resp_len, u32 max_len)
3741 {
3742 int i;
3743 struct opa_congestion_setting_attr *p =
3744 (struct opa_congestion_setting_attr *)data;
3745 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3746 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3747 struct opa_congestion_setting_entry_shadow *entries;
3748 struct cc_state *cc_state;
3749
3750 if (smp_length_check(sizeof(*p), max_len)) {
3751 smp->status |= IB_SMP_INVALID_FIELD;
3752 return reply((struct ib_mad_hdr *)smp);
3753 }
3754
3755 rcu_read_lock();
3756
3757 cc_state = get_cc_state(ppd);
3758
3759 if (!cc_state) {
3760 rcu_read_unlock();
3761 return reply((struct ib_mad_hdr *)smp);
3762 }
3763
3764 entries = cc_state->cong_setting.entries;
3765 p->port_control = cpu_to_be16(cc_state->cong_setting.port_control);
3766 p->control_map = cpu_to_be32(cc_state->cong_setting.control_map);
3767 for (i = 0; i < OPA_MAX_SLS; i++) {
3768 p->entries[i].ccti_increase = entries[i].ccti_increase;
3769 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
3770 p->entries[i].trigger_threshold =
3771 entries[i].trigger_threshold;
3772 p->entries[i].ccti_min = entries[i].ccti_min;
3773 }
3774
3775 rcu_read_unlock();
3776
3777 if (resp_len)
3778 *resp_len += sizeof(*p);
3779
3780 return reply((struct ib_mad_hdr *)smp);
3781 }
3782
3783 /*
3784 * Apply congestion control information stored in the ppd to the
3785 * active structure.
3786 */
3787 static void apply_cc_state(struct hfi1_pportdata *ppd)
3788 {
3789 struct cc_state *old_cc_state, *new_cc_state;
3790
3791 new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL);
3792 if (!new_cc_state)
3793 return;
3794
3795 /*
3796 * Hold the lock for updating *and* to prevent ppd information
3797 * from changing during the update.
3798 */
3799 spin_lock(&ppd->cc_state_lock);
3800
3801 old_cc_state = get_cc_state_protected(ppd);
3802 if (!old_cc_state) {
3803 /* never active, or shutting down */
3804 spin_unlock(&ppd->cc_state_lock);
3805 kfree(new_cc_state);
3806 return;
3807 }
3808
3809 *new_cc_state = *old_cc_state;
3810
3811 if (ppd->total_cct_entry)
3812 new_cc_state->cct.ccti_limit = ppd->total_cct_entry - 1;
3813 else
3814 new_cc_state->cct.ccti_limit = 0;
3815
3816 memcpy(new_cc_state->cct.entries, ppd->ccti_entries,
3817 ppd->total_cct_entry * sizeof(struct ib_cc_table_entry));
3818
3819 new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED;
3820 new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map;
3821 memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries,
3822 OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry));
3823
3824 rcu_assign_pointer(ppd->cc_state, new_cc_state);
3825
3826 spin_unlock(&ppd->cc_state_lock);
3827
3828 kfree_rcu(old_cc_state, rcu);
3829 }
3830
3831 static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data,
3832 struct ib_device *ibdev, u8 port,
3833 u32 *resp_len, u32 max_len)
3834 {
3835 struct opa_congestion_setting_attr *p =
3836 (struct opa_congestion_setting_attr *)data;
3837 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3838 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3839 struct opa_congestion_setting_entry_shadow *entries;
3840 int i;
3841
3842 if (smp_length_check(sizeof(*p), max_len)) {
3843 smp->status |= IB_SMP_INVALID_FIELD;
3844 return reply((struct ib_mad_hdr *)smp);
3845 }
3846
3847 /*
3848 * Save details from packet into the ppd. Hold the cc_state_lock so
3849 * our information is consistent with anyone trying to apply the state.
3850 */
3851 spin_lock(&ppd->cc_state_lock);
3852 ppd->cc_sl_control_map = be32_to_cpu(p->control_map);
3853
3854 entries = ppd->congestion_entries;
3855 for (i = 0; i < OPA_MAX_SLS; i++) {
3856 entries[i].ccti_increase = p->entries[i].ccti_increase;
3857 entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer);
3858 entries[i].trigger_threshold =
3859 p->entries[i].trigger_threshold;
3860 entries[i].ccti_min = p->entries[i].ccti_min;
3861 }
3862 spin_unlock(&ppd->cc_state_lock);
3863
3864 /* now apply the information */
3865 apply_cc_state(ppd);
3866
3867 return __subn_get_opa_cong_setting(smp, am, data, ibdev, port,
3868 resp_len, max_len);
3869 }
3870
3871 static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am,
3872 u8 *data, struct ib_device *ibdev,
3873 u8 port, u32 *resp_len, u32 max_len)
3874 {
3875 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3876 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3877 struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data;
3878 u64 ts;
3879 int i;
3880
3881 if (am || smp_length_check(sizeof(*cong_log), max_len)) {
3882 smp->status |= IB_SMP_INVALID_FIELD;
3883 return reply((struct ib_mad_hdr *)smp);
3884 }
3885
3886 spin_lock_irq(&ppd->cc_log_lock);
3887
3888 cong_log->log_type = OPA_CC_LOG_TYPE_HFI;
3889 cong_log->congestion_flags = 0;
3890 cong_log->threshold_event_counter =
3891 cpu_to_be16(ppd->threshold_event_counter);
3892 memcpy(cong_log->threshold_cong_event_map,
3893 ppd->threshold_cong_event_map,
3894 sizeof(cong_log->threshold_cong_event_map));
3895 /* keep timestamp in units of 1.024 usec */
3896 ts = ktime_get_ns() / 1024;
3897 cong_log->current_time_stamp = cpu_to_be32(ts);
3898 for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) {
3899 struct opa_hfi1_cong_log_event_internal *cce =
3900 &ppd->cc_events[ppd->cc_mad_idx++];
3901 if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS)
3902 ppd->cc_mad_idx = 0;
3903 /*
3904 * Entries which are older than twice the time
3905 * required to wrap the counter are supposed to
3906 * be zeroed (CA10-49 IBTA, release 1.2.1, V1).
3907 */
3908 if ((ts - cce->timestamp) / 2 > U32_MAX)
3909 continue;
3910 memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3);
3911 memcpy(cong_log->events[i].remote_qp_number_cn_entry,
3912 &cce->rqpn, 3);
3913 cong_log->events[i].sl_svc_type_cn_entry =
3914 ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7);
3915 cong_log->events[i].remote_lid_cn_entry =
3916 cpu_to_be32(cce->rlid);
3917 cong_log->events[i].timestamp_cn_entry =
3918 cpu_to_be32(cce->timestamp);
3919 }
3920
3921 /*
3922 * Reset threshold_cong_event_map, and threshold_event_counter
3923 * to 0 when log is read.
3924 */
3925 memset(ppd->threshold_cong_event_map, 0x0,
3926 sizeof(ppd->threshold_cong_event_map));
3927 ppd->threshold_event_counter = 0;
3928
3929 spin_unlock_irq(&ppd->cc_log_lock);
3930
3931 if (resp_len)
3932 *resp_len += sizeof(struct opa_hfi1_cong_log);
3933
3934 return reply((struct ib_mad_hdr *)smp);
3935 }
3936
3937 static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3938 struct ib_device *ibdev, u8 port,
3939 u32 *resp_len, u32 max_len)
3940 {
3941 struct ib_cc_table_attr *cc_table_attr =
3942 (struct ib_cc_table_attr *)data;
3943 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3944 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3945 u32 start_block = OPA_AM_START_BLK(am);
3946 u32 n_blocks = OPA_AM_NBLK(am);
3947 struct ib_cc_table_entry_shadow *entries;
3948 int i, j;
3949 u32 sentry, eentry;
3950 struct cc_state *cc_state;
3951 u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
3952
3953 /* sanity check n_blocks, start_block */
3954 if (n_blocks == 0 || smp_length_check(size, max_len) ||
3955 start_block + n_blocks > ppd->cc_max_table_entries) {
3956 smp->status |= IB_SMP_INVALID_FIELD;
3957 return reply((struct ib_mad_hdr *)smp);
3958 }
3959
3960 rcu_read_lock();
3961
3962 cc_state = get_cc_state(ppd);
3963
3964 if (!cc_state) {
3965 rcu_read_unlock();
3966 return reply((struct ib_mad_hdr *)smp);
3967 }
3968
3969 sentry = start_block * IB_CCT_ENTRIES;
3970 eentry = sentry + (IB_CCT_ENTRIES * n_blocks);
3971
3972 cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit);
3973
3974 entries = cc_state->cct.entries;
3975
3976 /* return n_blocks, though the last block may not be full */
3977 for (j = 0, i = sentry; i < eentry; j++, i++)
3978 cc_table_attr->ccti_entries[j].entry =
3979 cpu_to_be16(entries[i].entry);
3980
3981 rcu_read_unlock();
3982
3983 if (resp_len)
3984 *resp_len += size;
3985
3986 return reply((struct ib_mad_hdr *)smp);
3987 }
3988
3989 static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3990 struct ib_device *ibdev, u8 port,
3991 u32 *resp_len, u32 max_len)
3992 {
3993 struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data;
3994 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3995 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3996 u32 start_block = OPA_AM_START_BLK(am);
3997 u32 n_blocks = OPA_AM_NBLK(am);
3998 struct ib_cc_table_entry_shadow *entries;
3999 int i, j;
4000 u32 sentry, eentry;
4001 u16 ccti_limit;
4002 u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
4003
4004 /* sanity check n_blocks, start_block */
4005 if (n_blocks == 0 || smp_length_check(size, max_len) ||
4006 start_block + n_blocks > ppd->cc_max_table_entries) {
4007 smp->status |= IB_SMP_INVALID_FIELD;
4008 return reply((struct ib_mad_hdr *)smp);
4009 }
4010
4011 sentry = start_block * IB_CCT_ENTRIES;
4012 eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) +
4013 (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1;
4014
4015 /* sanity check ccti_limit */
4016 ccti_limit = be16_to_cpu(p->ccti_limit);
4017 if (ccti_limit + 1 > eentry) {
4018 smp->status |= IB_SMP_INVALID_FIELD;
4019 return reply((struct ib_mad_hdr *)smp);
4020 }
4021
4022 /*
4023 * Save details from packet into the ppd. Hold the cc_state_lock so
4024 * our information is consistent with anyone trying to apply the state.
4025 */
4026 spin_lock(&ppd->cc_state_lock);
4027 ppd->total_cct_entry = ccti_limit + 1;
4028 entries = ppd->ccti_entries;
4029 for (j = 0, i = sentry; i < eentry; j++, i++)
4030 entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry);
4031 spin_unlock(&ppd->cc_state_lock);
4032
4033 /* now apply the information */
4034 apply_cc_state(ppd);
4035
4036 return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len,
4037 max_len);
4038 }
4039
4040 struct opa_led_info {
4041 __be32 rsvd_led_mask;
4042 __be32 rsvd;
4043 };
4044
4045 #define OPA_LED_SHIFT 31
4046 #define OPA_LED_MASK BIT(OPA_LED_SHIFT)
4047
4048 static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
4049 struct ib_device *ibdev, u8 port,
4050 u32 *resp_len, u32 max_len)
4051 {
4052 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
4053 struct hfi1_pportdata *ppd = dd->pport;
4054 struct opa_led_info *p = (struct opa_led_info *)data;
4055 u32 nport = OPA_AM_NPORT(am);
4056 u32 is_beaconing_active;
4057
4058 if (nport != 1 || smp_length_check(sizeof(*p), max_len)) {
4059 smp->status |= IB_SMP_INVALID_FIELD;
4060 return reply((struct ib_mad_hdr *)smp);
4061 }
4062
4063 /*
4064 * This pairs with the memory barrier in hfi1_start_led_override to
4065 * ensure that we read the correct state of LED beaconing represented
4066 * by led_override_timer_active
4067 */
4068 smp_rmb();
4069 is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
4070 p->rsvd_led_mask = cpu_to_be32(is_beaconing_active << OPA_LED_SHIFT);
4071
4072 if (resp_len)
4073 *resp_len += sizeof(struct opa_led_info);
4074
4075 return reply((struct ib_mad_hdr *)smp);
4076 }
4077
4078 static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
4079 struct ib_device *ibdev, u8 port,
4080 u32 *resp_len, u32 max_len)
4081 {
4082 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
4083 struct opa_led_info *p = (struct opa_led_info *)data;
4084 u32 nport = OPA_AM_NPORT(am);
4085 int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK);
4086
4087 if (nport != 1 || smp_length_check(sizeof(*p), max_len)) {
4088 smp->status |= IB_SMP_INVALID_FIELD;
4089 return reply((struct ib_mad_hdr *)smp);
4090 }
4091
4092 if (on)
4093 hfi1_start_led_override(dd->pport, 2000, 1500);
4094 else
4095 shutdown_led_override(dd->pport);
4096
4097 return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len,
4098 max_len);
4099 }
4100
4101 static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
4102 u8 *data, struct ib_device *ibdev, u8 port,
4103 u32 *resp_len, u32 max_len)
4104 {
4105 int ret;
4106 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4107
4108 switch (attr_id) {
4109 case IB_SMP_ATTR_NODE_DESC:
4110 ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port,
4111 resp_len, max_len);
4112 break;
4113 case IB_SMP_ATTR_NODE_INFO:
4114 ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port,
4115 resp_len, max_len);
4116 break;
4117 case IB_SMP_ATTR_PORT_INFO:
4118 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port,
4119 resp_len, max_len);
4120 break;
4121 case IB_SMP_ATTR_PKEY_TABLE:
4122 ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port,
4123 resp_len, max_len);
4124 break;
4125 case OPA_ATTRIB_ID_SL_TO_SC_MAP:
4126 ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port,
4127 resp_len, max_len);
4128 break;
4129 case OPA_ATTRIB_ID_SC_TO_SL_MAP:
4130 ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port,
4131 resp_len, max_len);
4132 break;
4133 case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
4134 ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port,
4135 resp_len, max_len);
4136 break;
4137 case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
4138 ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
4139 resp_len, max_len);
4140 break;
4141 case OPA_ATTRIB_ID_PORT_STATE_INFO:
4142 ret = __subn_get_opa_psi(smp, am, data, ibdev, port,
4143 resp_len, max_len);
4144 break;
4145 case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
4146 ret = __subn_get_opa_bct(smp, am, data, ibdev, port,
4147 resp_len, max_len);
4148 break;
4149 case OPA_ATTRIB_ID_CABLE_INFO:
4150 ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port,
4151 resp_len, max_len);
4152 break;
4153 case IB_SMP_ATTR_VL_ARB_TABLE:
4154 ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port,
4155 resp_len, max_len);
4156 break;
4157 case OPA_ATTRIB_ID_CONGESTION_INFO:
4158 ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port,
4159 resp_len, max_len);
4160 break;
4161 case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
4162 ret = __subn_get_opa_cong_setting(smp, am, data, ibdev,
4163 port, resp_len, max_len);
4164 break;
4165 case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
4166 ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev,
4167 port, resp_len, max_len);
4168 break;
4169 case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
4170 ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port,
4171 resp_len, max_len);
4172 break;
4173 case IB_SMP_ATTR_LED_INFO:
4174 ret = __subn_get_opa_led_info(smp, am, data, ibdev, port,
4175 resp_len, max_len);
4176 break;
4177 case IB_SMP_ATTR_SM_INFO:
4178 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
4179 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
4180 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
4181 return IB_MAD_RESULT_SUCCESS;
4182 /* FALLTHROUGH */
4183 default:
4184 smp->status |= IB_SMP_UNSUP_METH_ATTR;
4185 ret = reply((struct ib_mad_hdr *)smp);
4186 break;
4187 }
4188 return ret;
4189 }
4190
4191 static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
4192 u8 *data, struct ib_device *ibdev, u8 port,
4193 u32 *resp_len, u32 max_len)
4194 {
4195 int ret;
4196 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4197
4198 switch (attr_id) {
4199 case IB_SMP_ATTR_PORT_INFO:
4200 ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port,
4201 resp_len, max_len);
4202 break;
4203 case IB_SMP_ATTR_PKEY_TABLE:
4204 ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port,
4205 resp_len, max_len);
4206 break;
4207 case OPA_ATTRIB_ID_SL_TO_SC_MAP:
4208 ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port,
4209 resp_len, max_len);
4210 break;
4211 case OPA_ATTRIB_ID_SC_TO_SL_MAP:
4212 ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port,
4213 resp_len, max_len);
4214 break;
4215 case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
4216 ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port,
4217 resp_len, max_len);
4218 break;
4219 case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
4220 ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port,
4221 resp_len, max_len);
4222 break;
4223 case OPA_ATTRIB_ID_PORT_STATE_INFO:
4224 ret = __subn_set_opa_psi(smp, am, data, ibdev, port,
4225 resp_len, max_len);
4226 break;
4227 case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
4228 ret = __subn_set_opa_bct(smp, am, data, ibdev, port,
4229 resp_len, max_len);
4230 break;
4231 case IB_SMP_ATTR_VL_ARB_TABLE:
4232 ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port,
4233 resp_len, max_len);
4234 break;
4235 case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
4236 ret = __subn_set_opa_cong_setting(smp, am, data, ibdev,
4237 port, resp_len, max_len);
4238 break;
4239 case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
4240 ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port,
4241 resp_len, max_len);
4242 break;
4243 case IB_SMP_ATTR_LED_INFO:
4244 ret = __subn_set_opa_led_info(smp, am, data, ibdev, port,
4245 resp_len, max_len);
4246 break;
4247 case IB_SMP_ATTR_SM_INFO:
4248 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
4249 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
4250 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
4251 return IB_MAD_RESULT_SUCCESS;
4252 /* FALLTHROUGH */
4253 default:
4254 smp->status |= IB_SMP_UNSUP_METH_ATTR;
4255 ret = reply((struct ib_mad_hdr *)smp);
4256 break;
4257 }
4258 return ret;
4259 }
4260
4261 static inline void set_aggr_error(struct opa_aggregate *ag)
4262 {
4263 ag->err_reqlength |= cpu_to_be16(0x8000);
4264 }
4265
4266 static int subn_get_opa_aggregate(struct opa_smp *smp,
4267 struct ib_device *ibdev, u8 port,
4268 u32 *resp_len)
4269 {
4270 int i;
4271 u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
4272 u8 *next_smp = opa_get_smp_data(smp);
4273
4274 if (num_attr < 1 || num_attr > 117) {
4275 smp->status |= IB_SMP_INVALID_FIELD;
4276 return reply((struct ib_mad_hdr *)smp);
4277 }
4278
4279 for (i = 0; i < num_attr; i++) {
4280 struct opa_aggregate *agg;
4281 size_t agg_data_len;
4282 size_t agg_size;
4283 u32 am;
4284
4285 agg = (struct opa_aggregate *)next_smp;
4286 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
4287 agg_size = sizeof(*agg) + agg_data_len;
4288 am = be32_to_cpu(agg->attr_mod);
4289
4290 *resp_len += agg_size;
4291
4292 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
4293 smp->status |= IB_SMP_INVALID_FIELD;
4294 return reply((struct ib_mad_hdr *)smp);
4295 }
4296
4297 /* zero the payload for this segment */
4298 memset(next_smp + sizeof(*agg), 0, agg_data_len);
4299
4300 (void)subn_get_opa_sma(agg->attr_id, smp, am, agg->data,
4301 ibdev, port, NULL, (u32)agg_data_len);
4302
4303 if (smp->status & IB_SMP_INVALID_FIELD)
4304 break;
4305 if (smp->status & ~IB_SMP_DIRECTION) {
4306 set_aggr_error(agg);
4307 return reply((struct ib_mad_hdr *)smp);
4308 }
4309 next_smp += agg_size;
4310 }
4311
4312 return reply((struct ib_mad_hdr *)smp);
4313 }
4314
4315 static int subn_set_opa_aggregate(struct opa_smp *smp,
4316 struct ib_device *ibdev, u8 port,
4317 u32 *resp_len)
4318 {
4319 int i;
4320 u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
4321 u8 *next_smp = opa_get_smp_data(smp);
4322
4323 if (num_attr < 1 || num_attr > 117) {
4324 smp->status |= IB_SMP_INVALID_FIELD;
4325 return reply((struct ib_mad_hdr *)smp);
4326 }
4327
4328 for (i = 0; i < num_attr; i++) {
4329 struct opa_aggregate *agg;
4330 size_t agg_data_len;
4331 size_t agg_size;
4332 u32 am;
4333
4334 agg = (struct opa_aggregate *)next_smp;
4335 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
4336 agg_size = sizeof(*agg) + agg_data_len;
4337 am = be32_to_cpu(agg->attr_mod);
4338
4339 *resp_len += agg_size;
4340
4341 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
4342 smp->status |= IB_SMP_INVALID_FIELD;
4343 return reply((struct ib_mad_hdr *)smp);
4344 }
4345
4346 (void)subn_set_opa_sma(agg->attr_id, smp, am, agg->data,
4347 ibdev, port, NULL, (u32)agg_data_len);
4348 if (smp->status & IB_SMP_INVALID_FIELD)
4349 break;
4350 if (smp->status & ~IB_SMP_DIRECTION) {
4351 set_aggr_error(agg);
4352 return reply((struct ib_mad_hdr *)smp);
4353 }
4354 next_smp += agg_size;
4355 }
4356
4357 return reply((struct ib_mad_hdr *)smp);
4358 }
4359
4360 /*
4361 * OPAv1 specifies that, on the transition to link up, these counters
4362 * are cleared:
4363 * PortRcvErrors [*]
4364 * LinkErrorRecovery
4365 * LocalLinkIntegrityErrors
4366 * ExcessiveBufferOverruns [*]
4367 *
4368 * [*] Error info associated with these counters is retained, but the
4369 * error info status is reset to 0.
4370 */
4371 void clear_linkup_counters(struct hfi1_devdata *dd)
4372 {
4373 /* PortRcvErrors */
4374 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
4375 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
4376 /* LinkErrorRecovery */
4377 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
4378 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
4379 /* LocalLinkIntegrityErrors */
4380 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
4381 /* ExcessiveBufferOverruns */
4382 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
4383 dd->rcv_ovfl_cnt = 0;
4384 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
4385 }
4386
4387 static int is_full_mgmt_pkey_in_table(struct hfi1_ibport *ibp)
4388 {
4389 unsigned int i;
4390 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4391
4392 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i)
4393 if (ppd->pkeys[i] == FULL_MGMT_P_KEY)
4394 return 1;
4395
4396 return 0;
4397 }
4398
4399 /*
4400 * is_local_mad() returns 1 if 'mad' is sent from, and destined to the
4401 * local node, 0 otherwise.
4402 */
4403 static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad,
4404 const struct ib_wc *in_wc)
4405 {
4406 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4407 const struct opa_smp *smp = (const struct opa_smp *)mad;
4408
4409 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
4410 return (smp->hop_cnt == 0 &&
4411 smp->route.dr.dr_slid == OPA_LID_PERMISSIVE &&
4412 smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE);
4413 }
4414
4415 return (in_wc->slid == ppd->lid);
4416 }
4417
4418 /*
4419 * opa_local_smp_check() should only be called on MADs for which
4420 * is_local_mad() returns true. It applies the SMP checks that are
4421 * specific to SMPs which are sent from, and destined to this node.
4422 * opa_local_smp_check() returns 0 if the SMP passes its checks, 1
4423 * otherwise.
4424 *
4425 * SMPs which arrive from other nodes are instead checked by
4426 * opa_smp_check().
4427 */
4428 static int opa_local_smp_check(struct hfi1_ibport *ibp,
4429 const struct ib_wc *in_wc)
4430 {
4431 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4432 u16 pkey;
4433
4434 if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))
4435 return 1;
4436
4437 pkey = ppd->pkeys[in_wc->pkey_index];
4438 /*
4439 * We need to do the "node-local" checks specified in OPAv1,
4440 * rev 0.90, section 9.10.26, which are:
4441 * - pkey is 0x7fff, or 0xffff
4442 * - Source QPN == 0 || Destination QPN == 0
4443 * - the MAD header's management class is either
4444 * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or
4445 * IB_MGMT_CLASS_SUBN_LID_ROUTED
4446 * - SLID != 0
4447 *
4448 * However, we know (and so don't need to check again) that,
4449 * for local SMPs, the MAD stack passes MADs with:
4450 * - Source QPN of 0
4451 * - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4452 * - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or
4453 * our own port's lid
4454 *
4455 */
4456 if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY)
4457 return 0;
4458 ingress_pkey_table_fail(ppd, pkey, in_wc->slid);
4459 return 1;
4460 }
4461
4462 /**
4463 * hfi1_pkey_validation_pma - It validates PKEYs for incoming PMA MAD packets.
4464 * @ibp: IB port data
4465 * @in_mad: MAD packet with header and data
4466 * @in_wc: Work completion data such as source LID, port number, etc.
4467 *
4468 * These are all the possible logic rules for validating a pkey:
4469 *
4470 * a) If pkey neither FULL_MGMT_P_KEY nor LIM_MGMT_P_KEY,
4471 * and NOT self-originated packet:
4472 * Drop MAD packet as it should always be part of the
4473 * management partition unless it's a self-originated packet.
4474 *
4475 * b) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY in pkey table:
4476 * The packet is coming from a management node and the receiving node
4477 * is also a management node, so it is safe for the packet to go through.
4478 *
4479 * c) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY is NOT in pkey table:
4480 * Drop the packet as LIM_MGMT_P_KEY should always be in the pkey table.
4481 * It could be an FM misconfiguration.
4482 *
4483 * d) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY is NOT in pkey table:
4484 * It is safe for the packet to go through since a non-management node is
4485 * talking to another non-management node.
4486 *
4487 * e) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY in pkey table:
4488 * Drop the packet because a non-management node is talking to a
4489 * management node, and it could be an attack.
4490 *
4491 * For the implementation, these rules can be simplied to only checking
4492 * for (a) and (e). There's no need to check for rule (b) as
4493 * the packet doesn't need to be dropped. Rule (c) is not possible in
4494 * the driver as LIM_MGMT_P_KEY is always in the pkey table.
4495 *
4496 * Return:
4497 * 0 - pkey is okay, -EINVAL it's a bad pkey
4498 */
4499 static int hfi1_pkey_validation_pma(struct hfi1_ibport *ibp,
4500 const struct opa_mad *in_mad,
4501 const struct ib_wc *in_wc)
4502 {
4503 u16 pkey_value = hfi1_lookup_pkey_value(ibp, in_wc->pkey_index);
4504
4505 /* Rule (a) from above */
4506 if (!is_local_mad(ibp, in_mad, in_wc) &&
4507 pkey_value != LIM_MGMT_P_KEY &&
4508 pkey_value != FULL_MGMT_P_KEY)
4509 return -EINVAL;
4510
4511 /* Rule (e) from above */
4512 if (pkey_value == LIM_MGMT_P_KEY &&
4513 is_full_mgmt_pkey_in_table(ibp))
4514 return -EINVAL;
4515
4516 return 0;
4517 }
4518
4519 static int process_subn_opa(struct ib_device *ibdev, int mad_flags,
4520 u8 port, const struct opa_mad *in_mad,
4521 struct opa_mad *out_mad,
4522 u32 *resp_len)
4523 {
4524 struct opa_smp *smp = (struct opa_smp *)out_mad;
4525 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4526 u8 *data;
4527 u32 am, data_size;
4528 __be16 attr_id;
4529 int ret;
4530
4531 *out_mad = *in_mad;
4532 data = opa_get_smp_data(smp);
4533 data_size = (u32)opa_get_smp_data_size(smp);
4534
4535 am = be32_to_cpu(smp->attr_mod);
4536 attr_id = smp->attr_id;
4537 if (smp->class_version != OPA_SM_CLASS_VERSION) {
4538 smp->status |= IB_SMP_UNSUP_VERSION;
4539 ret = reply((struct ib_mad_hdr *)smp);
4540 return ret;
4541 }
4542 ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey,
4543 smp->route.dr.dr_slid, smp->route.dr.return_path,
4544 smp->hop_cnt);
4545 if (ret) {
4546 u32 port_num = be32_to_cpu(smp->attr_mod);
4547
4548 /*
4549 * If this is a get/set portinfo, we already check the
4550 * M_Key if the MAD is for another port and the M_Key
4551 * is OK on the receiving port. This check is needed
4552 * to increment the error counters when the M_Key
4553 * fails to match on *both* ports.
4554 */
4555 if (attr_id == IB_SMP_ATTR_PORT_INFO &&
4556 (smp->method == IB_MGMT_METHOD_GET ||
4557 smp->method == IB_MGMT_METHOD_SET) &&
4558 port_num && port_num <= ibdev->phys_port_cnt &&
4559 port != port_num)
4560 (void)check_mkey(to_iport(ibdev, port_num),
4561 (struct ib_mad_hdr *)smp, 0,
4562 smp->mkey, smp->route.dr.dr_slid,
4563 smp->route.dr.return_path,
4564 smp->hop_cnt);
4565 ret = IB_MAD_RESULT_FAILURE;
4566 return ret;
4567 }
4568
4569 *resp_len = opa_get_smp_header_size(smp);
4570
4571 switch (smp->method) {
4572 case IB_MGMT_METHOD_GET:
4573 switch (attr_id) {
4574 default:
4575 clear_opa_smp_data(smp);
4576 ret = subn_get_opa_sma(attr_id, smp, am, data,
4577 ibdev, port, resp_len,
4578 data_size);
4579 break;
4580 case OPA_ATTRIB_ID_AGGREGATE:
4581 ret = subn_get_opa_aggregate(smp, ibdev, port,
4582 resp_len);
4583 break;
4584 }
4585 break;
4586 case IB_MGMT_METHOD_SET:
4587 switch (attr_id) {
4588 default:
4589 ret = subn_set_opa_sma(attr_id, smp, am, data,
4590 ibdev, port, resp_len,
4591 data_size);
4592 break;
4593 case OPA_ATTRIB_ID_AGGREGATE:
4594 ret = subn_set_opa_aggregate(smp, ibdev, port,
4595 resp_len);
4596 break;
4597 }
4598 break;
4599 case IB_MGMT_METHOD_TRAP:
4600 case IB_MGMT_METHOD_REPORT:
4601 case IB_MGMT_METHOD_REPORT_RESP:
4602 case IB_MGMT_METHOD_GET_RESP:
4603 /*
4604 * The ib_mad module will call us to process responses
4605 * before checking for other consumers.
4606 * Just tell the caller to process it normally.
4607 */
4608 ret = IB_MAD_RESULT_SUCCESS;
4609 break;
4610 case IB_MGMT_METHOD_TRAP_REPRESS:
4611 subn_handle_opa_trap_repress(ibp, smp);
4612 /* Always successful */
4613 ret = IB_MAD_RESULT_SUCCESS;
4614 break;
4615 default:
4616 smp->status |= IB_SMP_UNSUP_METHOD;
4617 ret = reply((struct ib_mad_hdr *)smp);
4618 break;
4619 }
4620
4621 return ret;
4622 }
4623
4624 static int process_subn(struct ib_device *ibdev, int mad_flags,
4625 u8 port, const struct ib_mad *in_mad,
4626 struct ib_mad *out_mad)
4627 {
4628 struct ib_smp *smp = (struct ib_smp *)out_mad;
4629 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4630 int ret;
4631
4632 *out_mad = *in_mad;
4633 if (smp->class_version != 1) {
4634 smp->status |= IB_SMP_UNSUP_VERSION;
4635 ret = reply((struct ib_mad_hdr *)smp);
4636 return ret;
4637 }
4638
4639 ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags,
4640 smp->mkey, (__force __be32)smp->dr_slid,
4641 smp->return_path, smp->hop_cnt);
4642 if (ret) {
4643 u32 port_num = be32_to_cpu(smp->attr_mod);
4644
4645 /*
4646 * If this is a get/set portinfo, we already check the
4647 * M_Key if the MAD is for another port and the M_Key
4648 * is OK on the receiving port. This check is needed
4649 * to increment the error counters when the M_Key
4650 * fails to match on *both* ports.
4651 */
4652 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
4653 (smp->method == IB_MGMT_METHOD_GET ||
4654 smp->method == IB_MGMT_METHOD_SET) &&
4655 port_num && port_num <= ibdev->phys_port_cnt &&
4656 port != port_num)
4657 (void)check_mkey(to_iport(ibdev, port_num),
4658 (struct ib_mad_hdr *)smp, 0,
4659 smp->mkey,
4660 (__force __be32)smp->dr_slid,
4661 smp->return_path, smp->hop_cnt);
4662 ret = IB_MAD_RESULT_FAILURE;
4663 return ret;
4664 }
4665
4666 switch (smp->method) {
4667 case IB_MGMT_METHOD_GET:
4668 switch (smp->attr_id) {
4669 case IB_SMP_ATTR_NODE_INFO:
4670 ret = subn_get_nodeinfo(smp, ibdev, port);
4671 break;
4672 default:
4673 smp->status |= IB_SMP_UNSUP_METH_ATTR;
4674 ret = reply((struct ib_mad_hdr *)smp);
4675 break;
4676 }
4677 break;
4678 }
4679
4680 return ret;
4681 }
4682
4683 static int process_perf(struct ib_device *ibdev, u8 port,
4684 const struct ib_mad *in_mad,
4685 struct ib_mad *out_mad)
4686 {
4687 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
4688 struct ib_class_port_info *cpi = (struct ib_class_port_info *)
4689 &pmp->data;
4690 int ret = IB_MAD_RESULT_FAILURE;
4691
4692 *out_mad = *in_mad;
4693 if (pmp->mad_hdr.class_version != 1) {
4694 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4695 ret = reply((struct ib_mad_hdr *)pmp);
4696 return ret;
4697 }
4698
4699 switch (pmp->mad_hdr.method) {
4700 case IB_MGMT_METHOD_GET:
4701 switch (pmp->mad_hdr.attr_id) {
4702 case IB_PMA_PORT_COUNTERS:
4703 ret = pma_get_ib_portcounters(pmp, ibdev, port);
4704 break;
4705 case IB_PMA_PORT_COUNTERS_EXT:
4706 ret = pma_get_ib_portcounters_ext(pmp, ibdev, port);
4707 break;
4708 case IB_PMA_CLASS_PORT_INFO:
4709 cpi->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
4710 ret = reply((struct ib_mad_hdr *)pmp);
4711 break;
4712 default:
4713 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4714 ret = reply((struct ib_mad_hdr *)pmp);
4715 break;
4716 }
4717 break;
4718
4719 case IB_MGMT_METHOD_SET:
4720 if (pmp->mad_hdr.attr_id) {
4721 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4722 ret = reply((struct ib_mad_hdr *)pmp);
4723 }
4724 break;
4725
4726 case IB_MGMT_METHOD_TRAP:
4727 case IB_MGMT_METHOD_GET_RESP:
4728 /*
4729 * The ib_mad module will call us to process responses
4730 * before checking for other consumers.
4731 * Just tell the caller to process it normally.
4732 */
4733 ret = IB_MAD_RESULT_SUCCESS;
4734 break;
4735
4736 default:
4737 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4738 ret = reply((struct ib_mad_hdr *)pmp);
4739 break;
4740 }
4741
4742 return ret;
4743 }
4744
4745 static int process_perf_opa(struct ib_device *ibdev, u8 port,
4746 const struct opa_mad *in_mad,
4747 struct opa_mad *out_mad, u32 *resp_len)
4748 {
4749 struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad;
4750 int ret;
4751
4752 *out_mad = *in_mad;
4753
4754 if (pmp->mad_hdr.class_version != OPA_SM_CLASS_VERSION) {
4755 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4756 return reply((struct ib_mad_hdr *)pmp);
4757 }
4758
4759 *resp_len = sizeof(pmp->mad_hdr);
4760
4761 switch (pmp->mad_hdr.method) {
4762 case IB_MGMT_METHOD_GET:
4763 switch (pmp->mad_hdr.attr_id) {
4764 case IB_PMA_CLASS_PORT_INFO:
4765 ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len);
4766 break;
4767 case OPA_PM_ATTRIB_ID_PORT_STATUS:
4768 ret = pma_get_opa_portstatus(pmp, ibdev, port,
4769 resp_len);
4770 break;
4771 case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS:
4772 ret = pma_get_opa_datacounters(pmp, ibdev, port,
4773 resp_len);
4774 break;
4775 case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS:
4776 ret = pma_get_opa_porterrors(pmp, ibdev, port,
4777 resp_len);
4778 break;
4779 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4780 ret = pma_get_opa_errorinfo(pmp, ibdev, port,
4781 resp_len);
4782 break;
4783 default:
4784 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4785 ret = reply((struct ib_mad_hdr *)pmp);
4786 break;
4787 }
4788 break;
4789
4790 case IB_MGMT_METHOD_SET:
4791 switch (pmp->mad_hdr.attr_id) {
4792 case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS:
4793 ret = pma_set_opa_portstatus(pmp, ibdev, port,
4794 resp_len);
4795 break;
4796 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4797 ret = pma_set_opa_errorinfo(pmp, ibdev, port,
4798 resp_len);
4799 break;
4800 default:
4801 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4802 ret = reply((struct ib_mad_hdr *)pmp);
4803 break;
4804 }
4805 break;
4806
4807 case IB_MGMT_METHOD_TRAP:
4808 case IB_MGMT_METHOD_GET_RESP:
4809 /*
4810 * The ib_mad module will call us to process responses
4811 * before checking for other consumers.
4812 * Just tell the caller to process it normally.
4813 */
4814 ret = IB_MAD_RESULT_SUCCESS;
4815 break;
4816
4817 default:
4818 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4819 ret = reply((struct ib_mad_hdr *)pmp);
4820 break;
4821 }
4822
4823 return ret;
4824 }
4825
4826 static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags,
4827 u8 port, const struct ib_wc *in_wc,
4828 const struct ib_grh *in_grh,
4829 const struct opa_mad *in_mad,
4830 struct opa_mad *out_mad, size_t *out_mad_size,
4831 u16 *out_mad_pkey_index)
4832 {
4833 int ret;
4834 int pkey_idx;
4835 u32 resp_len = 0;
4836 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4837
4838 pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
4839 if (pkey_idx < 0) {
4840 pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
4841 hfi1_get_pkey(ibp, 1));
4842 pkey_idx = 1;
4843 }
4844 *out_mad_pkey_index = (u16)pkey_idx;
4845
4846 switch (in_mad->mad_hdr.mgmt_class) {
4847 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4848 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4849 if (is_local_mad(ibp, in_mad, in_wc)) {
4850 ret = opa_local_smp_check(ibp, in_wc);
4851 if (ret)
4852 return IB_MAD_RESULT_FAILURE;
4853 }
4854 ret = process_subn_opa(ibdev, mad_flags, port, in_mad,
4855 out_mad, &resp_len);
4856 goto bail;
4857 case IB_MGMT_CLASS_PERF_MGMT:
4858 ret = hfi1_pkey_validation_pma(ibp, in_mad, in_wc);
4859 if (ret)
4860 return IB_MAD_RESULT_FAILURE;
4861
4862 ret = process_perf_opa(ibdev, port, in_mad, out_mad, &resp_len);
4863 goto bail;
4864
4865 default:
4866 ret = IB_MAD_RESULT_SUCCESS;
4867 }
4868
4869 bail:
4870 if (ret & IB_MAD_RESULT_REPLY)
4871 *out_mad_size = round_up(resp_len, 8);
4872 else if (ret & IB_MAD_RESULT_SUCCESS)
4873 *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh);
4874
4875 return ret;
4876 }
4877
4878 static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4879 const struct ib_wc *in_wc,
4880 const struct ib_grh *in_grh,
4881 const struct ib_mad *in_mad,
4882 struct ib_mad *out_mad)
4883 {
4884 int ret;
4885
4886 switch (in_mad->mad_hdr.mgmt_class) {
4887 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4888 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4889 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
4890 break;
4891 case IB_MGMT_CLASS_PERF_MGMT:
4892 ret = process_perf(ibdev, port, in_mad, out_mad);
4893 break;
4894 default:
4895 ret = IB_MAD_RESULT_SUCCESS;
4896 break;
4897 }
4898
4899 return ret;
4900 }
4901
4902 /**
4903 * hfi1_process_mad - process an incoming MAD packet
4904 * @ibdev: the infiniband device this packet came in on
4905 * @mad_flags: MAD flags
4906 * @port: the port number this packet came in on
4907 * @in_wc: the work completion entry for this packet
4908 * @in_grh: the global route header for this packet
4909 * @in_mad: the incoming MAD
4910 * @out_mad: any outgoing MAD reply
4911 *
4912 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
4913 * interested in processing.
4914 *
4915 * Note that the verbs framework has already done the MAD sanity checks,
4916 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4917 * MADs.
4918 *
4919 * This is called by the ib_mad module.
4920 */
4921 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4922 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4923 const struct ib_mad_hdr *in_mad, size_t in_mad_size,
4924 struct ib_mad_hdr *out_mad, size_t *out_mad_size,
4925 u16 *out_mad_pkey_index)
4926 {
4927 switch (in_mad->base_version) {
4928 case OPA_MGMT_BASE_VERSION:
4929 if (unlikely(in_mad_size != sizeof(struct opa_mad))) {
4930 dev_err(ibdev->dev.parent, "invalid in_mad_size\n");
4931 return IB_MAD_RESULT_FAILURE;
4932 }
4933 return hfi1_process_opa_mad(ibdev, mad_flags, port,
4934 in_wc, in_grh,
4935 (struct opa_mad *)in_mad,
4936 (struct opa_mad *)out_mad,
4937 out_mad_size,
4938 out_mad_pkey_index);
4939 case IB_MGMT_BASE_VERSION:
4940 return hfi1_process_ib_mad(ibdev, mad_flags, port,
4941 in_wc, in_grh,
4942 (const struct ib_mad *)in_mad,
4943 (struct ib_mad *)out_mad);
4944 default:
4945 break;
4946 }
4947
4948 return IB_MAD_RESULT_FAILURE;
4949 }
CRIS linux kernel tree