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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / staging / rdma / hfi1 / mad.c
1 /*
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2015 Intel Corporation.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * BSD LICENSE
20 *
21 * Copyright(c) 2015 Intel Corporation.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 *
27 * - Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * - Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in
31 * the documentation and/or other materials provided with the
32 * distribution.
33 * - Neither the name of Intel Corporation nor the names of its
34 * contributors may be used to endorse or promote products derived
35 * from this software without specific prior written permission.
36 *
37 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
38 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
39 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
40 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
41 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
44 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
45 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 *
49 */
50
51 #include <linux/net.h>
52 #define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \
53 / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16)))
54
55 #include "hfi.h"
56 #include "mad.h"
57 #include "trace.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 static int reply(struct ib_mad_hdr *smp)
64 {
65 /*
66 * The verbs framework will handle the directed/LID route
67 * packet changes.
68 */
69 smp->method = IB_MGMT_METHOD_GET_RESP;
70 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
71 smp->status |= IB_SMP_DIRECTION;
72 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
73 }
74
75 static inline void clear_opa_smp_data(struct opa_smp *smp)
76 {
77 void *data = opa_get_smp_data(smp);
78 size_t size = opa_get_smp_data_size(smp);
79
80 memset(data, 0, size);
81 }
82
83 static void send_trap(struct hfi1_ibport *ibp, void *data, unsigned len)
84 {
85 struct ib_mad_send_buf *send_buf;
86 struct ib_mad_agent *agent;
87 struct opa_smp *smp;
88 int ret;
89 unsigned long flags;
90 unsigned long timeout;
91 int pkey_idx;
92 u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
93
94 agent = ibp->send_agent;
95 if (!agent)
96 return;
97
98 /* o14-3.2.1 */
99 if (ppd_from_ibp(ibp)->lstate != IB_PORT_ACTIVE)
100 return;
101
102 /* o14-2 */
103 if (ibp->trap_timeout && time_before(jiffies, ibp->trap_timeout))
104 return;
105
106 pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
107 if (pkey_idx < 0) {
108 pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
109 __func__, hfi1_get_pkey(ibp, 1));
110 pkey_idx = 1;
111 }
112
113 send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
114 IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
115 GFP_ATOMIC, IB_MGMT_BASE_VERSION);
116 if (IS_ERR(send_buf))
117 return;
118
119 smp = send_buf->mad;
120 smp->base_version = OPA_MGMT_BASE_VERSION;
121 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
122 smp->class_version = OPA_SMI_CLASS_VERSION;
123 smp->method = IB_MGMT_METHOD_TRAP;
124 ibp->tid++;
125 smp->tid = cpu_to_be64(ibp->tid);
126 smp->attr_id = IB_SMP_ATTR_NOTICE;
127 /* o14-1: smp->mkey = 0; */
128 memcpy(smp->route.lid.data, data, len);
129
130 spin_lock_irqsave(&ibp->lock, flags);
131 if (!ibp->sm_ah) {
132 if (ibp->sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
133 struct ib_ah *ah;
134
135 ah = hfi1_create_qp0_ah(ibp, ibp->sm_lid);
136 if (IS_ERR(ah))
137 ret = PTR_ERR(ah);
138 else {
139 send_buf->ah = ah;
140 ibp->sm_ah = to_iah(ah);
141 ret = 0;
142 }
143 } else
144 ret = -EINVAL;
145 } else {
146 send_buf->ah = &ibp->sm_ah->ibah;
147 ret = 0;
148 }
149 spin_unlock_irqrestore(&ibp->lock, flags);
150
151 if (!ret)
152 ret = ib_post_send_mad(send_buf, NULL);
153 if (!ret) {
154 /* 4.096 usec. */
155 timeout = (4096 * (1UL << ibp->subnet_timeout)) / 1000;
156 ibp->trap_timeout = jiffies + usecs_to_jiffies(timeout);
157 } else {
158 ib_free_send_mad(send_buf);
159 ibp->trap_timeout = 0;
160 }
161 }
162
163 /*
164 * Send a bad [PQ]_Key trap (ch. 14.3.8).
165 */
166 void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
167 u32 qp1, u32 qp2, u16 lid1, u16 lid2)
168 {
169 struct opa_mad_notice_attr data;
170 u32 lid = ppd_from_ibp(ibp)->lid;
171 u32 _lid1 = lid1;
172 u32 _lid2 = lid2;
173
174 memset(&data, 0, sizeof(data));
175
176 if (trap_num == OPA_TRAP_BAD_P_KEY)
177 ibp->pkey_violations++;
178 else
179 ibp->qkey_violations++;
180 ibp->n_pkt_drops++;
181
182 /* Send violation trap */
183 data.generic_type = IB_NOTICE_TYPE_SECURITY;
184 data.prod_type_lsb = IB_NOTICE_PROD_CA;
185 data.trap_num = trap_num;
186 data.issuer_lid = cpu_to_be32(lid);
187 data.ntc_257_258.lid1 = cpu_to_be32(_lid1);
188 data.ntc_257_258.lid2 = cpu_to_be32(_lid2);
189 data.ntc_257_258.key = cpu_to_be32(key);
190 data.ntc_257_258.sl = sl << 3;
191 data.ntc_257_258.qp1 = cpu_to_be32(qp1);
192 data.ntc_257_258.qp2 = cpu_to_be32(qp2);
193
194 send_trap(ibp, &data, sizeof(data));
195 }
196
197 /*
198 * Send a bad M_Key trap (ch. 14.3.9).
199 */
200 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
201 __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
202 {
203 struct opa_mad_notice_attr data;
204 u32 lid = ppd_from_ibp(ibp)->lid;
205
206 memset(&data, 0, sizeof(data));
207 /* Send violation trap */
208 data.generic_type = IB_NOTICE_TYPE_SECURITY;
209 data.prod_type_lsb = IB_NOTICE_PROD_CA;
210 data.trap_num = OPA_TRAP_BAD_M_KEY;
211 data.issuer_lid = cpu_to_be32(lid);
212 data.ntc_256.lid = data.issuer_lid;
213 data.ntc_256.method = mad->method;
214 data.ntc_256.attr_id = mad->attr_id;
215 data.ntc_256.attr_mod = mad->attr_mod;
216 data.ntc_256.mkey = mkey;
217 if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
218 data.ntc_256.dr_slid = dr_slid;
219 data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
220 if (hop_cnt > ARRAY_SIZE(data.ntc_256.dr_rtn_path)) {
221 data.ntc_256.dr_trunc_hop |=
222 IB_NOTICE_TRAP_DR_TRUNC;
223 hop_cnt = ARRAY_SIZE(data.ntc_256.dr_rtn_path);
224 }
225 data.ntc_256.dr_trunc_hop |= hop_cnt;
226 memcpy(data.ntc_256.dr_rtn_path, return_path,
227 hop_cnt);
228 }
229
230 send_trap(ibp, &data, sizeof(data));
231 }
232
233 /*
234 * Send a Port Capability Mask Changed trap (ch. 14.3.11).
235 */
236 void hfi1_cap_mask_chg(struct hfi1_ibport *ibp)
237 {
238 struct opa_mad_notice_attr data;
239 u32 lid = ppd_from_ibp(ibp)->lid;
240
241 memset(&data, 0, sizeof(data));
242
243 data.generic_type = IB_NOTICE_TYPE_INFO;
244 data.prod_type_lsb = IB_NOTICE_PROD_CA;
245 data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
246 data.issuer_lid = cpu_to_be32(lid);
247 data.ntc_144.lid = data.issuer_lid;
248 data.ntc_144.new_cap_mask = cpu_to_be32(ibp->port_cap_flags);
249
250 send_trap(ibp, &data, sizeof(data));
251 }
252
253 /*
254 * Send a System Image GUID Changed trap (ch. 14.3.12).
255 */
256 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
257 {
258 struct opa_mad_notice_attr data;
259 u32 lid = ppd_from_ibp(ibp)->lid;
260
261 memset(&data, 0, sizeof(data));
262
263 data.generic_type = IB_NOTICE_TYPE_INFO;
264 data.prod_type_lsb = IB_NOTICE_PROD_CA;
265 data.trap_num = OPA_TRAP_CHANGE_SYSGUID;
266 data.issuer_lid = cpu_to_be32(lid);
267 data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
268 data.ntc_145.lid = data.issuer_lid;
269
270 send_trap(ibp, &data, sizeof(data));
271 }
272
273 /*
274 * Send a Node Description Changed trap (ch. 14.3.13).
275 */
276 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
277 {
278 struct opa_mad_notice_attr data;
279 u32 lid = ppd_from_ibp(ibp)->lid;
280
281 memset(&data, 0, sizeof(data));
282
283 data.generic_type = IB_NOTICE_TYPE_INFO;
284 data.prod_type_lsb = IB_NOTICE_PROD_CA;
285 data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
286 data.issuer_lid = cpu_to_be32(lid);
287 data.ntc_144.lid = data.issuer_lid;
288 data.ntc_144.change_flags =
289 cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
290
291 send_trap(ibp, &data, sizeof(data));
292 }
293
294 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
295 u8 *data, struct ib_device *ibdev,
296 u8 port, u32 *resp_len)
297 {
298 struct opa_node_description *nd;
299
300 if (am) {
301 smp->status |= IB_SMP_INVALID_FIELD;
302 return reply((struct ib_mad_hdr *)smp);
303 }
304
305 nd = (struct opa_node_description *)data;
306
307 memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
308
309 if (resp_len)
310 *resp_len += sizeof(*nd);
311
312 return reply((struct ib_mad_hdr *)smp);
313 }
314
315 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
316 struct ib_device *ibdev, u8 port,
317 u32 *resp_len)
318 {
319 struct opa_node_info *ni;
320 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
321 unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
322
323 ni = (struct opa_node_info *)data;
324
325 /* GUID 0 is illegal */
326 if (am || pidx >= dd->num_pports || dd->pport[pidx].guid == 0) {
327 smp->status |= IB_SMP_INVALID_FIELD;
328 return reply((struct ib_mad_hdr *)smp);
329 }
330
331 ni->port_guid = cpu_to_be64(dd->pport[pidx].guid);
332 ni->base_version = OPA_MGMT_BASE_VERSION;
333 ni->class_version = OPA_SMI_CLASS_VERSION;
334 ni->node_type = 1; /* channel adapter */
335 ni->num_ports = ibdev->phys_port_cnt;
336 /* This is already in network order */
337 ni->system_image_guid = ib_hfi1_sys_image_guid;
338 /* Use first-port GUID as node */
339 ni->node_guid = cpu_to_be64(dd->pport->guid);
340 ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
341 ni->device_id = cpu_to_be16(dd->pcidev->device);
342 ni->revision = cpu_to_be32(dd->minrev);
343 ni->local_port_num = port;
344 ni->vendor_id[0] = dd->oui1;
345 ni->vendor_id[1] = dd->oui2;
346 ni->vendor_id[2] = dd->oui3;
347
348 if (resp_len)
349 *resp_len += sizeof(*ni);
350
351 return reply((struct ib_mad_hdr *)smp);
352 }
353
354 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
355 u8 port)
356 {
357 struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
358 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
359 unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
360
361 /* GUID 0 is illegal */
362 if (smp->attr_mod || pidx >= dd->num_pports ||
363 dd->pport[pidx].guid == 0)
364 smp->status |= IB_SMP_INVALID_FIELD;
365 else
366 nip->port_guid = cpu_to_be64(dd->pport[pidx].guid);
367
368 nip->base_version = OPA_MGMT_BASE_VERSION;
369 nip->class_version = OPA_SMI_CLASS_VERSION;
370 nip->node_type = 1; /* channel adapter */
371 nip->num_ports = ibdev->phys_port_cnt;
372 /* This is already in network order */
373 nip->sys_guid = ib_hfi1_sys_image_guid;
374 /* Use first-port GUID as node */
375 nip->node_guid = cpu_to_be64(dd->pport->guid);
376 nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
377 nip->device_id = cpu_to_be16(dd->pcidev->device);
378 nip->revision = cpu_to_be32(dd->minrev);
379 nip->local_port_num = port;
380 nip->vendor_id[0] = dd->oui1;
381 nip->vendor_id[1] = dd->oui2;
382 nip->vendor_id[2] = dd->oui3;
383
384 return reply((struct ib_mad_hdr *)smp);
385 }
386
387 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
388 {
389 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
390 }
391
392 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
393 {
394 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
395 }
396
397 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
398 {
399 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
400 }
401
402 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
403 int mad_flags, __be64 mkey, __be32 dr_slid,
404 u8 return_path[], u8 hop_cnt)
405 {
406 int valid_mkey = 0;
407 int ret = 0;
408
409 /* Is the mkey in the process of expiring? */
410 if (ibp->mkey_lease_timeout &&
411 time_after_eq(jiffies, ibp->mkey_lease_timeout)) {
412 /* Clear timeout and mkey protection field. */
413 ibp->mkey_lease_timeout = 0;
414 ibp->mkeyprot = 0;
415 }
416
417 if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->mkey == 0 ||
418 ibp->mkey == mkey)
419 valid_mkey = 1;
420
421 /* Unset lease timeout on any valid Get/Set/TrapRepress */
422 if (valid_mkey && ibp->mkey_lease_timeout &&
423 (mad->method == IB_MGMT_METHOD_GET ||
424 mad->method == IB_MGMT_METHOD_SET ||
425 mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
426 ibp->mkey_lease_timeout = 0;
427
428 if (!valid_mkey) {
429 switch (mad->method) {
430 case IB_MGMT_METHOD_GET:
431 /* Bad mkey not a violation below level 2 */
432 if (ibp->mkeyprot < 2)
433 break;
434 case IB_MGMT_METHOD_SET:
435 case IB_MGMT_METHOD_TRAP_REPRESS:
436 if (ibp->mkey_violations != 0xFFFF)
437 ++ibp->mkey_violations;
438 if (!ibp->mkey_lease_timeout && ibp->mkey_lease_period)
439 ibp->mkey_lease_timeout = jiffies +
440 ibp->mkey_lease_period * HZ;
441 /* Generate a trap notice. */
442 bad_mkey(ibp, mad, mkey, dr_slid, return_path,
443 hop_cnt);
444 ret = 1;
445 }
446 }
447
448 return ret;
449 }
450
451 /*
452 * The SMA caches reads from LCB registers in case the LCB is unavailable.
453 * (The LCB is unavailable in certain link states, for example.)
454 */
455 struct lcb_datum {
456 u32 off;
457 u64 val;
458 };
459
460 static struct lcb_datum lcb_cache[] = {
461 { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
462 };
463
464 static int write_lcb_cache(u32 off, u64 val)
465 {
466 int i;
467
468 for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
469 if (lcb_cache[i].off == off) {
470 lcb_cache[i].val = val;
471 return 0;
472 }
473 }
474
475 pr_warn("%s bad offset 0x%x\n", __func__, off);
476 return -1;
477 }
478
479 static int read_lcb_cache(u32 off, u64 *val)
480 {
481 int i;
482
483 for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
484 if (lcb_cache[i].off == off) {
485 *val = lcb_cache[i].val;
486 return 0;
487 }
488 }
489
490 pr_warn("%s bad offset 0x%x\n", __func__, off);
491 return -1;
492 }
493
494 void read_ltp_rtt(struct hfi1_devdata *dd)
495 {
496 u64 reg;
497
498 if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
499 dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
500 else
501 write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
502 }
503
504 static u8 __opa_porttype(struct hfi1_pportdata *ppd)
505 {
506 if (qsfp_mod_present(ppd)) {
507 if (ppd->qsfp_info.cache_valid)
508 return OPA_PORT_TYPE_STANDARD;
509 return OPA_PORT_TYPE_DISCONNECTED;
510 }
511 return OPA_PORT_TYPE_UNKNOWN;
512 }
513
514 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
515 struct ib_device *ibdev, u8 port,
516 u32 *resp_len)
517 {
518 int i;
519 struct hfi1_devdata *dd;
520 struct hfi1_pportdata *ppd;
521 struct hfi1_ibport *ibp;
522 struct opa_port_info *pi = (struct opa_port_info *)data;
523 u8 mtu;
524 u8 credit_rate;
525 u32 state;
526 u32 num_ports = OPA_AM_NPORT(am);
527 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
528 u32 buffer_units;
529 u64 tmp = 0;
530
531 if (num_ports != 1) {
532 smp->status |= IB_SMP_INVALID_FIELD;
533 return reply((struct ib_mad_hdr *)smp);
534 }
535
536 dd = dd_from_ibdev(ibdev);
537 /* IB numbers ports from 1, hw from 0 */
538 ppd = dd->pport + (port - 1);
539 ibp = &ppd->ibport_data;
540
541 if (ppd->vls_supported/2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
542 ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
543 smp->status |= IB_SMP_INVALID_FIELD;
544 return reply((struct ib_mad_hdr *)smp);
545 }
546
547 pi->lid = cpu_to_be32(ppd->lid);
548
549 /* Only return the mkey if the protection field allows it. */
550 if (!(smp->method == IB_MGMT_METHOD_GET &&
551 ibp->mkey != smp->mkey &&
552 ibp->mkeyprot == 1))
553 pi->mkey = ibp->mkey;
554
555 pi->subnet_prefix = ibp->gid_prefix;
556 pi->sm_lid = cpu_to_be32(ibp->sm_lid);
557 pi->ib_cap_mask = cpu_to_be32(ibp->port_cap_flags);
558 pi->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period);
559 pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
560 pi->sa_qp = cpu_to_be32(ppd->sa_qp);
561
562 pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
563 pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
564 pi->link_width.active = cpu_to_be16(ppd->link_width_active);
565
566 pi->link_width_downgrade.supported =
567 cpu_to_be16(ppd->link_width_downgrade_supported);
568 pi->link_width_downgrade.enabled =
569 cpu_to_be16(ppd->link_width_downgrade_enabled);
570 pi->link_width_downgrade.tx_active =
571 cpu_to_be16(ppd->link_width_downgrade_tx_active);
572 pi->link_width_downgrade.rx_active =
573 cpu_to_be16(ppd->link_width_downgrade_rx_active);
574
575 pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
576 pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
577 pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
578
579 state = driver_lstate(ppd);
580
581 if (start_of_sm_config && (state == IB_PORT_INIT))
582 ppd->is_sm_config_started = 1;
583
584 pi->port_phys_conf = __opa_porttype(ppd) & 0xf;
585
586 #if PI_LED_ENABLE_SUP
587 pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
588 pi->port_states.ledenable_offlinereason |=
589 ppd->is_sm_config_started << 5;
590 pi->port_states.ledenable_offlinereason |=
591 ppd->offline_disabled_reason & OPA_PI_MASK_OFFLINE_REASON;
592 #else
593 pi->port_states.offline_reason = ppd->neighbor_normal << 4;
594 pi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
595 pi->port_states.offline_reason |= ppd->offline_disabled_reason &
596 OPA_PI_MASK_OFFLINE_REASON;
597 #endif /* PI_LED_ENABLE_SUP */
598
599 pi->port_states.portphysstate_portstate =
600 (hfi1_ibphys_portstate(ppd) << 4) | state;
601
602 pi->mkeyprotect_lmc = (ibp->mkeyprot << 6) | ppd->lmc;
603
604 memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
605 for (i = 0; i < ppd->vls_supported; i++) {
606 mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
607 if ((i % 2) == 0)
608 pi->neigh_mtu.pvlx_to_mtu[i/2] |= (mtu << 4);
609 else
610 pi->neigh_mtu.pvlx_to_mtu[i/2] |= mtu;
611 }
612 /* don't forget VL 15 */
613 mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
614 pi->neigh_mtu.pvlx_to_mtu[15/2] |= mtu;
615 pi->smsl = ibp->sm_sl & OPA_PI_MASK_SMSL;
616 pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
617 pi->partenforce_filterraw |=
618 (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
619 if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
620 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
621 if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
622 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
623 pi->mkey_violations = cpu_to_be16(ibp->mkey_violations);
624 /* P_KeyViolations are counted by hardware. */
625 pi->pkey_violations = cpu_to_be16(ibp->pkey_violations);
626 pi->qkey_violations = cpu_to_be16(ibp->qkey_violations);
627
628 pi->vl.cap = ppd->vls_supported;
629 pi->vl.high_limit = cpu_to_be16(ibp->vl_high_limit);
630 pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
631 pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
632
633 pi->clientrereg_subnettimeout = ibp->subnet_timeout;
634
635 pi->port_link_mode = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
636 OPA_PORT_LINK_MODE_OPA << 5 |
637 OPA_PORT_LINK_MODE_OPA);
638
639 pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
640
641 pi->port_mode = cpu_to_be16(
642 ppd->is_active_optimize_enabled ?
643 OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
644
645 pi->port_packet_format.supported =
646 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
647 pi->port_packet_format.enabled =
648 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
649
650 /* flit_control.interleave is (OPA V1, version .76):
651 * bits use
652 * ---- ---
653 * 2 res
654 * 2 DistanceSupported
655 * 2 DistanceEnabled
656 * 5 MaxNextLevelTxEnabled
657 * 5 MaxNestLevelRxSupported
658 *
659 * HFI supports only "distance mode 1" (see OPA V1, version .76,
660 * section 9.6.2), so set DistanceSupported, DistanceEnabled
661 * to 0x1.
662 */
663 pi->flit_control.interleave = cpu_to_be16(0x1400);
664
665 pi->link_down_reason = ppd->local_link_down_reason.sma;
666 pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
667 pi->port_error_action = cpu_to_be32(ppd->port_error_action);
668 pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
669
670 /* 32.768 usec. response time (guessing) */
671 pi->resptimevalue = 3;
672
673 pi->local_port_num = port;
674
675 /* buffer info for FM */
676 pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
677
678 pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
679 pi->neigh_port_num = ppd->neighbor_port_number;
680 pi->port_neigh_mode =
681 (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
682 (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
683 (ppd->neighbor_fm_security ?
684 OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
685
686 /* HFIs shall always return VL15 credits to their
687 * neighbor in a timely manner, without any credit return pacing.
688 */
689 credit_rate = 0;
690 buffer_units = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
691 buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
692 buffer_units |= (credit_rate << 6) &
693 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
694 buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
695 pi->buffer_units = cpu_to_be32(buffer_units);
696
697 pi->opa_cap_mask = cpu_to_be16(OPA_CAP_MASK3_IsSharedSpaceSupported);
698
699 /* HFI supports a replay buffer 128 LTPs in size */
700 pi->replay_depth.buffer = 0x80;
701 /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
702 read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
703
704 /* this counter is 16 bits wide, but the replay_depth.wire
705 * variable is only 8 bits */
706 if (tmp > 0xff)
707 tmp = 0xff;
708 pi->replay_depth.wire = tmp;
709
710 if (resp_len)
711 *resp_len += sizeof(struct opa_port_info);
712
713 return reply((struct ib_mad_hdr *)smp);
714 }
715
716 /**
717 * get_pkeys - return the PKEY table
718 * @dd: the hfi1_ib device
719 * @port: the IB port number
720 * @pkeys: the pkey table is placed here
721 */
722 static int get_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
723 {
724 struct hfi1_pportdata *ppd = dd->pport + port - 1;
725
726 memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
727
728 return 0;
729 }
730
731 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
732 struct ib_device *ibdev, u8 port,
733 u32 *resp_len)
734 {
735 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
736 u32 n_blocks_req = OPA_AM_NBLK(am);
737 u32 start_block = am & 0x7ff;
738 __be16 *p;
739 u16 *q;
740 int i;
741 u16 n_blocks_avail;
742 unsigned npkeys = hfi1_get_npkeys(dd);
743 size_t size;
744
745 if (n_blocks_req == 0) {
746 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
747 port, start_block, n_blocks_req);
748 smp->status |= IB_SMP_INVALID_FIELD;
749 return reply((struct ib_mad_hdr *)smp);
750 }
751
752 n_blocks_avail = (u16) (npkeys/OPA_PARTITION_TABLE_BLK_SIZE) + 1;
753
754 size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16);
755
756 if (start_block + n_blocks_req > n_blocks_avail ||
757 n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
758 pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; "
759 "avail 0x%x; blk/smp 0x%lx\n",
760 start_block, n_blocks_req, n_blocks_avail,
761 OPA_NUM_PKEY_BLOCKS_PER_SMP);
762 smp->status |= IB_SMP_INVALID_FIELD;
763 return reply((struct ib_mad_hdr *)smp);
764 }
765
766 p = (__be16 *) data;
767 q = (u16 *)data;
768 /* get the real pkeys if we are requesting the first block */
769 if (start_block == 0) {
770 get_pkeys(dd, port, q);
771 for (i = 0; i < npkeys; i++)
772 p[i] = cpu_to_be16(q[i]);
773 if (resp_len)
774 *resp_len += size;
775 } else
776 smp->status |= IB_SMP_INVALID_FIELD;
777
778 return reply((struct ib_mad_hdr *)smp);
779 }
780
781 enum {
782 HFI_TRANSITION_DISALLOWED,
783 HFI_TRANSITION_IGNORED,
784 HFI_TRANSITION_ALLOWED,
785 HFI_TRANSITION_UNDEFINED,
786 };
787
788 /*
789 * Use shortened names to improve readability of
790 * {logical,physical}_state_transitions
791 */
792 enum {
793 __D = HFI_TRANSITION_DISALLOWED,
794 __I = HFI_TRANSITION_IGNORED,
795 __A = HFI_TRANSITION_ALLOWED,
796 __U = HFI_TRANSITION_UNDEFINED,
797 };
798
799 /*
800 * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are
801 * represented in physical_state_transitions.
802 */
803 #define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1)
804
805 /*
806 * Within physical_state_transitions, rows represent "old" states,
807 * columns "new" states, and physical_state_transitions.allowed[old][new]
808 * indicates if the transition from old state to new state is legal (see
809 * OPAg1v1, Table 6-4).
810 */
811 static const struct {
812 u8 allowed[__N_PHYSTATES][__N_PHYSTATES];
813 } physical_state_transitions = {
814 {
815 /* 2 3 4 5 6 7 8 9 10 11 */
816 /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D },
817 /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A },
818 /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
819 /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D },
820 /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
821 /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D },
822 /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
823 /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D },
824 /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
825 /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I },
826 }
827 };
828
829 /*
830 * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented
831 * logical_state_transitions
832 */
833
834 #define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1)
835
836 /*
837 * Within logical_state_transitions rows represent "old" states,
838 * columns "new" states, and logical_state_transitions.allowed[old][new]
839 * indicates if the transition from old state to new state is legal (see
840 * OPAg1v1, Table 9-12).
841 */
842 static const struct {
843 u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES];
844 } logical_state_transitions = {
845 {
846 /* 1 2 3 4 5 */
847 /* 1 */ { __I, __D, __D, __D, __U},
848 /* 2 */ { __D, __I, __A, __D, __U},
849 /* 3 */ { __D, __D, __I, __A, __U},
850 /* 4 */ { __D, __D, __I, __I, __U},
851 /* 5 */ { __U, __U, __U, __U, __U},
852 }
853 };
854
855 static int logical_transition_allowed(int old, int new)
856 {
857 if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER ||
858 new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) {
859 pr_warn("invalid logical state(s) (old %d new %d)\n",
860 old, new);
861 return HFI_TRANSITION_UNDEFINED;
862 }
863
864 if (new == IB_PORT_NOP)
865 return HFI_TRANSITION_ALLOWED; /* always allowed */
866
867 /* adjust states for indexing into logical_state_transitions */
868 old -= IB_PORT_DOWN;
869 new -= IB_PORT_DOWN;
870
871 if (old < 0 || new < 0)
872 return HFI_TRANSITION_UNDEFINED;
873 return logical_state_transitions.allowed[old][new];
874 }
875
876 static int physical_transition_allowed(int old, int new)
877 {
878 if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX ||
879 new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) {
880 pr_warn("invalid physical state(s) (old %d new %d)\n",
881 old, new);
882 return HFI_TRANSITION_UNDEFINED;
883 }
884
885 if (new == IB_PORTPHYSSTATE_NOP)
886 return HFI_TRANSITION_ALLOWED; /* always allowed */
887
888 /* adjust states for indexing into physical_state_transitions */
889 old -= IB_PORTPHYSSTATE_POLLING;
890 new -= IB_PORTPHYSSTATE_POLLING;
891
892 if (old < 0 || new < 0)
893 return HFI_TRANSITION_UNDEFINED;
894 return physical_state_transitions.allowed[old][new];
895 }
896
897 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
898 u32 logical_new, u32 physical_new)
899 {
900 u32 physical_old = driver_physical_state(ppd);
901 u32 logical_old = driver_logical_state(ppd);
902 int ret, logical_allowed, physical_allowed;
903
904 logical_allowed = ret =
905 logical_transition_allowed(logical_old, logical_new);
906
907 if (ret == HFI_TRANSITION_DISALLOWED ||
908 ret == HFI_TRANSITION_UNDEFINED) {
909 pr_warn("invalid logical state transition %s -> %s\n",
910 opa_lstate_name(logical_old),
911 opa_lstate_name(logical_new));
912 return ret;
913 }
914
915 physical_allowed = ret =
916 physical_transition_allowed(physical_old, physical_new);
917
918 if (ret == HFI_TRANSITION_DISALLOWED ||
919 ret == HFI_TRANSITION_UNDEFINED) {
920 pr_warn("invalid physical state transition %s -> %s\n",
921 opa_pstate_name(physical_old),
922 opa_pstate_name(physical_new));
923 return ret;
924 }
925
926 if (logical_allowed == HFI_TRANSITION_IGNORED &&
927 physical_allowed == HFI_TRANSITION_IGNORED)
928 return HFI_TRANSITION_IGNORED;
929
930 /*
931 * Either physical_allowed or logical_allowed is
932 * HFI_TRANSITION_ALLOWED.
933 */
934 return HFI_TRANSITION_ALLOWED;
935 }
936
937 static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
938 u32 logical_state, u32 phys_state,
939 int suppress_idle_sma)
940 {
941 struct hfi1_devdata *dd = ppd->dd;
942 u32 link_state;
943 int ret;
944
945 ret = port_states_transition_allowed(ppd, logical_state, phys_state);
946 if (ret == HFI_TRANSITION_DISALLOWED ||
947 ret == HFI_TRANSITION_UNDEFINED) {
948 /* error message emitted above */
949 smp->status |= IB_SMP_INVALID_FIELD;
950 return 0;
951 }
952
953 if (ret == HFI_TRANSITION_IGNORED)
954 return 0;
955
956 if ((phys_state != IB_PORTPHYSSTATE_NOP) &&
957 !(logical_state == IB_PORT_DOWN ||
958 logical_state == IB_PORT_NOP)){
959 pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n",
960 logical_state, phys_state);
961 smp->status |= IB_SMP_INVALID_FIELD;
962 }
963
964 /*
965 * Logical state changes are summarized in OPAv1g1 spec.,
966 * Table 9-12; physical state changes are summarized in
967 * OPAv1g1 spec., Table 6.4.
968 */
969 switch (logical_state) {
970 case IB_PORT_NOP:
971 if (phys_state == IB_PORTPHYSSTATE_NOP)
972 break;
973 /* FALLTHROUGH */
974 case IB_PORT_DOWN:
975 if (phys_state == IB_PORTPHYSSTATE_NOP)
976 link_state = HLS_DN_DOWNDEF;
977 else if (phys_state == IB_PORTPHYSSTATE_POLLING) {
978 link_state = HLS_DN_POLL;
979 set_link_down_reason(ppd,
980 OPA_LINKDOWN_REASON_FM_BOUNCE, 0,
981 OPA_LINKDOWN_REASON_FM_BOUNCE);
982 } else if (phys_state == IB_PORTPHYSSTATE_DISABLED)
983 link_state = HLS_DN_DISABLE;
984 else {
985 pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n",
986 phys_state);
987 smp->status |= IB_SMP_INVALID_FIELD;
988 break;
989 }
990
991 set_link_state(ppd, link_state);
992 if (link_state == HLS_DN_DISABLE &&
993 (ppd->offline_disabled_reason >
994 OPA_LINKDOWN_REASON_SMA_DISABLED ||
995 ppd->offline_disabled_reason ==
996 OPA_LINKDOWN_REASON_NONE))
997 ppd->offline_disabled_reason =
998 OPA_LINKDOWN_REASON_SMA_DISABLED;
999 /*
1000 * Don't send a reply if the response would be sent
1001 * through the disabled port.
1002 */
1003 if (link_state == HLS_DN_DISABLE && smp->hop_cnt)
1004 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1005 break;
1006 case IB_PORT_ARMED:
1007 ret = set_link_state(ppd, HLS_UP_ARMED);
1008 if ((ret == 0) && (suppress_idle_sma == 0))
1009 send_idle_sma(dd, SMA_IDLE_ARM);
1010 break;
1011 case IB_PORT_ACTIVE:
1012 if (ppd->neighbor_normal) {
1013 ret = set_link_state(ppd, HLS_UP_ACTIVE);
1014 if (ret == 0)
1015 send_idle_sma(dd, SMA_IDLE_ACTIVE);
1016 } else {
1017 pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
1018 smp->status |= IB_SMP_INVALID_FIELD;
1019 }
1020 break;
1021 default:
1022 pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
1023 logical_state);
1024 smp->status |= IB_SMP_INVALID_FIELD;
1025 }
1026
1027 return 0;
1028 }
1029
1030 /**
1031 * subn_set_opa_portinfo - set port information
1032 * @smp: the incoming SM packet
1033 * @ibdev: the infiniband device
1034 * @port: the port on the device
1035 *
1036 */
1037 static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
1038 struct ib_device *ibdev, u8 port,
1039 u32 *resp_len)
1040 {
1041 struct opa_port_info *pi = (struct opa_port_info *)data;
1042 struct ib_event event;
1043 struct hfi1_devdata *dd;
1044 struct hfi1_pportdata *ppd;
1045 struct hfi1_ibport *ibp;
1046 u8 clientrereg;
1047 unsigned long flags;
1048 u32 smlid, opa_lid; /* tmp vars to hold LID values */
1049 u16 lid;
1050 u8 ls_old, ls_new, ps_new;
1051 u8 vls;
1052 u8 msl;
1053 u8 crc_enabled;
1054 u16 lse, lwe, mtu;
1055 u32 num_ports = OPA_AM_NPORT(am);
1056 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1057 int ret, i, invalid = 0, call_set_mtu = 0;
1058 int call_link_downgrade_policy = 0;
1059
1060 if (num_ports != 1) {
1061 smp->status |= IB_SMP_INVALID_FIELD;
1062 return reply((struct ib_mad_hdr *)smp);
1063 }
1064
1065 opa_lid = be32_to_cpu(pi->lid);
1066 if (opa_lid & 0xFFFF0000) {
1067 pr_warn("OPA_PortInfo lid out of range: %X\n", opa_lid);
1068 smp->status |= IB_SMP_INVALID_FIELD;
1069 goto get_only;
1070 }
1071
1072 lid = (u16)(opa_lid & 0x0000FFFF);
1073
1074 smlid = be32_to_cpu(pi->sm_lid);
1075 if (smlid & 0xFFFF0000) {
1076 pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid);
1077 smp->status |= IB_SMP_INVALID_FIELD;
1078 goto get_only;
1079 }
1080 smlid &= 0x0000FFFF;
1081
1082 clientrereg = (pi->clientrereg_subnettimeout &
1083 OPA_PI_MASK_CLIENT_REREGISTER);
1084
1085 dd = dd_from_ibdev(ibdev);
1086 /* IB numbers ports from 1, hw from 0 */
1087 ppd = dd->pport + (port - 1);
1088 ibp = &ppd->ibport_data;
1089 event.device = ibdev;
1090 event.element.port_num = port;
1091
1092 ls_old = driver_lstate(ppd);
1093
1094 ibp->mkey = pi->mkey;
1095 ibp->gid_prefix = pi->subnet_prefix;
1096 ibp->mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
1097
1098 /* Must be a valid unicast LID address. */
1099 if ((lid == 0 && ls_old > IB_PORT_INIT) ||
1100 lid >= HFI1_MULTICAST_LID_BASE) {
1101 smp->status |= IB_SMP_INVALID_FIELD;
1102 pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n",
1103 lid);
1104 } else if (ppd->lid != lid ||
1105 ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) {
1106 if (ppd->lid != lid)
1107 hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT);
1108 if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
1109 hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT);
1110 hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
1111 event.event = IB_EVENT_LID_CHANGE;
1112 ib_dispatch_event(&event);
1113 }
1114
1115 msl = pi->smsl & OPA_PI_MASK_SMSL;
1116 if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON)
1117 ppd->linkinit_reason =
1118 (pi->partenforce_filterraw &
1119 OPA_PI_MASK_LINKINIT_REASON);
1120 /* enable/disable SW pkey checking as per FM control */
1121 if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_IN)
1122 ppd->part_enforce |= HFI1_PART_ENFORCE_IN;
1123 else
1124 ppd->part_enforce &= ~HFI1_PART_ENFORCE_IN;
1125
1126 if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_OUT)
1127 ppd->part_enforce |= HFI1_PART_ENFORCE_OUT;
1128 else
1129 ppd->part_enforce &= ~HFI1_PART_ENFORCE_OUT;
1130
1131 /* Must be a valid unicast LID address. */
1132 if ((smlid == 0 && ls_old > IB_PORT_INIT) ||
1133 smlid >= HFI1_MULTICAST_LID_BASE) {
1134 smp->status |= IB_SMP_INVALID_FIELD;
1135 pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
1136 } else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) {
1137 pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid);
1138 spin_lock_irqsave(&ibp->lock, flags);
1139 if (ibp->sm_ah) {
1140 if (smlid != ibp->sm_lid)
1141 ibp->sm_ah->attr.dlid = smlid;
1142 if (msl != ibp->sm_sl)
1143 ibp->sm_ah->attr.sl = msl;
1144 }
1145 spin_unlock_irqrestore(&ibp->lock, flags);
1146 if (smlid != ibp->sm_lid)
1147 ibp->sm_lid = smlid;
1148 if (msl != ibp->sm_sl)
1149 ibp->sm_sl = msl;
1150 event.event = IB_EVENT_SM_CHANGE;
1151 ib_dispatch_event(&event);
1152 }
1153
1154 if (pi->link_down_reason == 0) {
1155 ppd->local_link_down_reason.sma = 0;
1156 ppd->local_link_down_reason.latest = 0;
1157 }
1158
1159 if (pi->neigh_link_down_reason == 0) {
1160 ppd->neigh_link_down_reason.sma = 0;
1161 ppd->neigh_link_down_reason.latest = 0;
1162 }
1163
1164 ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp);
1165 ppd->sa_qp = be32_to_cpu(pi->sa_qp);
1166
1167 ppd->port_error_action = be32_to_cpu(pi->port_error_action);
1168 lwe = be16_to_cpu(pi->link_width.enabled);
1169 if (lwe) {
1170 if (lwe == OPA_LINK_WIDTH_RESET
1171 || lwe == OPA_LINK_WIDTH_RESET_OLD)
1172 set_link_width_enabled(ppd, ppd->link_width_supported);
1173 else if ((lwe & ~ppd->link_width_supported) == 0)
1174 set_link_width_enabled(ppd, lwe);
1175 else
1176 smp->status |= IB_SMP_INVALID_FIELD;
1177 }
1178 lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
1179 /* LWD.E is always applied - 0 means "disabled" */
1180 if (lwe == OPA_LINK_WIDTH_RESET
1181 || lwe == OPA_LINK_WIDTH_RESET_OLD) {
1182 set_link_width_downgrade_enabled(ppd,
1183 ppd->link_width_downgrade_supported);
1184 } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) {
1185 /* only set and apply if something changed */
1186 if (lwe != ppd->link_width_downgrade_enabled) {
1187 set_link_width_downgrade_enabled(ppd, lwe);
1188 call_link_downgrade_policy = 1;
1189 }
1190 } else
1191 smp->status |= IB_SMP_INVALID_FIELD;
1192
1193 lse = be16_to_cpu(pi->link_speed.enabled);
1194 if (lse) {
1195 if (lse & be16_to_cpu(pi->link_speed.supported))
1196 set_link_speed_enabled(ppd, lse);
1197 else
1198 smp->status |= IB_SMP_INVALID_FIELD;
1199 }
1200
1201 ibp->mkeyprot = (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6;
1202 ibp->vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF;
1203 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT,
1204 ibp->vl_high_limit);
1205
1206 if (ppd->vls_supported/2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
1207 ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
1208 smp->status |= IB_SMP_INVALID_FIELD;
1209 return reply((struct ib_mad_hdr *)smp);
1210 }
1211 for (i = 0; i < ppd->vls_supported; i++) {
1212 if ((i % 2) == 0)
1213 mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i/2] >> 4)
1214 & 0xF);
1215 else
1216 mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i/2] & 0xF);
1217 if (mtu == 0xffff) {
1218 pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n",
1219 mtu,
1220 (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
1221 smp->status |= IB_SMP_INVALID_FIELD;
1222 mtu = hfi1_max_mtu; /* use a valid MTU */
1223 }
1224 if (dd->vld[i].mtu != mtu) {
1225 dd_dev_info(dd,
1226 "MTU change on vl %d from %d to %d\n",
1227 i, dd->vld[i].mtu, mtu);
1228 dd->vld[i].mtu = mtu;
1229 call_set_mtu++;
1230 }
1231 }
1232 /* As per OPAV1 spec: VL15 must support and be configured
1233 * for operation with a 2048 or larger MTU.
1234 */
1235 mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15/2] & 0xF);
1236 if (mtu < 2048 || mtu == 0xffff)
1237 mtu = 2048;
1238 if (dd->vld[15].mtu != mtu) {
1239 dd_dev_info(dd,
1240 "MTU change on vl 15 from %d to %d\n",
1241 dd->vld[15].mtu, mtu);
1242 dd->vld[15].mtu = mtu;
1243 call_set_mtu++;
1244 }
1245 if (call_set_mtu)
1246 set_mtu(ppd);
1247
1248 /* Set operational VLs */
1249 vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
1250 if (vls) {
1251 if (vls > ppd->vls_supported) {
1252 pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
1253 pi->operational_vls);
1254 smp->status |= IB_SMP_INVALID_FIELD;
1255 } else {
1256 if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS,
1257 vls) == -EINVAL)
1258 smp->status |= IB_SMP_INVALID_FIELD;
1259 }
1260 }
1261
1262 if (pi->mkey_violations == 0)
1263 ibp->mkey_violations = 0;
1264
1265 if (pi->pkey_violations == 0)
1266 ibp->pkey_violations = 0;
1267
1268 if (pi->qkey_violations == 0)
1269 ibp->qkey_violations = 0;
1270
1271 ibp->subnet_timeout =
1272 pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT;
1273
1274 crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode);
1275 crc_enabled >>= 4;
1276 crc_enabled &= 0xf;
1277
1278 if (crc_enabled != 0)
1279 ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled);
1280
1281 ppd->is_active_optimize_enabled =
1282 !!(be16_to_cpu(pi->port_mode)
1283 & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE);
1284
1285 ls_new = pi->port_states.portphysstate_portstate &
1286 OPA_PI_MASK_PORT_STATE;
1287 ps_new = (pi->port_states.portphysstate_portstate &
1288 OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4;
1289
1290 if (ls_old == IB_PORT_INIT) {
1291 if (start_of_sm_config) {
1292 if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1293 ppd->is_sm_config_started = 1;
1294 } else if (ls_new == IB_PORT_ARMED) {
1295 if (ppd->is_sm_config_started == 0)
1296 invalid = 1;
1297 }
1298 }
1299
1300 /* Handle CLIENT_REREGISTER event b/c SM asked us for it */
1301 if (clientrereg) {
1302 event.event = IB_EVENT_CLIENT_REREGISTER;
1303 ib_dispatch_event(&event);
1304 }
1305
1306 /*
1307 * Do the port state change now that the other link parameters
1308 * have been set.
1309 * Changing the port physical state only makes sense if the link
1310 * is down or is being set to down.
1311 */
1312
1313 ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1314 if (ret)
1315 return ret;
1316
1317 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1318
1319 /* restore re-reg bit per o14-12.2.1 */
1320 pi->clientrereg_subnettimeout |= clientrereg;
1321
1322 /*
1323 * Apply the new link downgrade policy. This may result in a link
1324 * bounce. Do this after everything else so things are settled.
1325 * Possible problem: if setting the port state above fails, then
1326 * the policy change is not applied.
1327 */
1328 if (call_link_downgrade_policy)
1329 apply_link_downgrade_policy(ppd, 0);
1330
1331 return ret;
1332
1333 get_only:
1334 return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1335 }
1336
1337 /**
1338 * set_pkeys - set the PKEY table for ctxt 0
1339 * @dd: the hfi1_ib device
1340 * @port: the IB port number
1341 * @pkeys: the PKEY table
1342 */
1343 static int set_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
1344 {
1345 struct hfi1_pportdata *ppd;
1346 int i;
1347 int changed = 0;
1348 int update_includes_mgmt_partition = 0;
1349
1350 /*
1351 * IB port one/two always maps to context zero/one,
1352 * always a kernel context, no locking needed
1353 * If we get here with ppd setup, no need to check
1354 * that rcd is valid.
1355 */
1356 ppd = dd->pport + (port - 1);
1357 /*
1358 * If the update does not include the management pkey, don't do it.
1359 */
1360 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1361 if (pkeys[i] == LIM_MGMT_P_KEY) {
1362 update_includes_mgmt_partition = 1;
1363 break;
1364 }
1365 }
1366
1367 if (!update_includes_mgmt_partition)
1368 return 1;
1369
1370 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1371 u16 key = pkeys[i];
1372 u16 okey = ppd->pkeys[i];
1373
1374 if (key == okey)
1375 continue;
1376 /*
1377 * The SM gives us the complete PKey table. We have
1378 * to ensure that we put the PKeys in the matching
1379 * slots.
1380 */
1381 ppd->pkeys[i] = key;
1382 changed = 1;
1383 }
1384
1385 if (changed) {
1386 struct ib_event event;
1387
1388 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0);
1389
1390 event.event = IB_EVENT_PKEY_CHANGE;
1391 event.device = &dd->verbs_dev.ibdev;
1392 event.element.port_num = port;
1393 ib_dispatch_event(&event);
1394 }
1395 return 0;
1396 }
1397
1398 static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1399 struct ib_device *ibdev, u8 port,
1400 u32 *resp_len)
1401 {
1402 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1403 u32 n_blocks_sent = OPA_AM_NBLK(am);
1404 u32 start_block = am & 0x7ff;
1405 u16 *p = (u16 *) data;
1406 __be16 *q = (__be16 *)data;
1407 int i;
1408 u16 n_blocks_avail;
1409 unsigned npkeys = hfi1_get_npkeys(dd);
1410
1411 if (n_blocks_sent == 0) {
1412 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
1413 port, start_block, n_blocks_sent);
1414 smp->status |= IB_SMP_INVALID_FIELD;
1415 return reply((struct ib_mad_hdr *)smp);
1416 }
1417
1418 n_blocks_avail = (u16)(npkeys/OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1419
1420 if (start_block + n_blocks_sent > n_blocks_avail ||
1421 n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1422 pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n",
1423 start_block, n_blocks_sent, n_blocks_avail,
1424 OPA_NUM_PKEY_BLOCKS_PER_SMP);
1425 smp->status |= IB_SMP_INVALID_FIELD;
1426 return reply((struct ib_mad_hdr *)smp);
1427 }
1428
1429 for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++)
1430 p[i] = be16_to_cpu(q[i]);
1431
1432 if (start_block == 0 && set_pkeys(dd, port, p) != 0) {
1433 smp->status |= IB_SMP_INVALID_FIELD;
1434 return reply((struct ib_mad_hdr *)smp);
1435 }
1436
1437 return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len);
1438 }
1439
1440 static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1441 {
1442 u64 *val = data;
1443
1444 *val++ = read_csr(dd, SEND_SC2VLT0);
1445 *val++ = read_csr(dd, SEND_SC2VLT1);
1446 *val++ = read_csr(dd, SEND_SC2VLT2);
1447 *val++ = read_csr(dd, SEND_SC2VLT3);
1448 return 0;
1449 }
1450
1451 #define ILLEGAL_VL 12
1452 /*
1453 * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except
1454 * for SC15, which must map to VL15). If we don't remap things this
1455 * way it is possible for VL15 counters to increment when we try to
1456 * send on a SC which is mapped to an invalid VL.
1457 */
1458 static void filter_sc2vlt(void *data)
1459 {
1460 int i;
1461 u8 *pd = data;
1462
1463 for (i = 0; i < OPA_MAX_SCS; i++) {
1464 if (i == 15)
1465 continue;
1466 if ((pd[i] & 0x1f) == 0xf)
1467 pd[i] = ILLEGAL_VL;
1468 }
1469 }
1470
1471 static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1472 {
1473 u64 *val = data;
1474
1475 filter_sc2vlt(data);
1476
1477 write_csr(dd, SEND_SC2VLT0, *val++);
1478 write_csr(dd, SEND_SC2VLT1, *val++);
1479 write_csr(dd, SEND_SC2VLT2, *val++);
1480 write_csr(dd, SEND_SC2VLT3, *val++);
1481 write_seqlock_irq(&dd->sc2vl_lock);
1482 memcpy(dd->sc2vl, data, sizeof(dd->sc2vl));
1483 write_sequnlock_irq(&dd->sc2vl_lock);
1484 return 0;
1485 }
1486
1487 static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1488 struct ib_device *ibdev, u8 port,
1489 u32 *resp_len)
1490 {
1491 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1492 u8 *p = data;
1493 size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */
1494 unsigned i;
1495
1496 if (am) {
1497 smp->status |= IB_SMP_INVALID_FIELD;
1498 return reply((struct ib_mad_hdr *)smp);
1499 }
1500
1501 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1502 *p++ = ibp->sl_to_sc[i];
1503
1504 if (resp_len)
1505 *resp_len += size;
1506
1507 return reply((struct ib_mad_hdr *)smp);
1508 }
1509
1510 static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1511 struct ib_device *ibdev, u8 port,
1512 u32 *resp_len)
1513 {
1514 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1515 u8 *p = data;
1516 int i;
1517
1518 if (am) {
1519 smp->status |= IB_SMP_INVALID_FIELD;
1520 return reply((struct ib_mad_hdr *)smp);
1521 }
1522
1523 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1524 ibp->sl_to_sc[i] = *p++;
1525
1526 return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len);
1527 }
1528
1529 static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1530 struct ib_device *ibdev, u8 port,
1531 u32 *resp_len)
1532 {
1533 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1534 u8 *p = data;
1535 size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */
1536 unsigned i;
1537
1538 if (am) {
1539 smp->status |= IB_SMP_INVALID_FIELD;
1540 return reply((struct ib_mad_hdr *)smp);
1541 }
1542
1543 for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1544 *p++ = ibp->sc_to_sl[i];
1545
1546 if (resp_len)
1547 *resp_len += size;
1548
1549 return reply((struct ib_mad_hdr *)smp);
1550 }
1551
1552 static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1553 struct ib_device *ibdev, u8 port,
1554 u32 *resp_len)
1555 {
1556 struct hfi1_ibport *ibp = to_iport(ibdev, port);
1557 u8 *p = data;
1558 int i;
1559
1560 if (am) {
1561 smp->status |= IB_SMP_INVALID_FIELD;
1562 return reply((struct ib_mad_hdr *)smp);
1563 }
1564
1565 for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1566 ibp->sc_to_sl[i] = *p++;
1567
1568 return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len);
1569 }
1570
1571 static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1572 struct ib_device *ibdev, u8 port,
1573 u32 *resp_len)
1574 {
1575 u32 n_blocks = OPA_AM_NBLK(am);
1576 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1577 void *vp = (void *) data;
1578 size_t size = 4 * sizeof(u64);
1579
1580 if (n_blocks != 1) {
1581 smp->status |= IB_SMP_INVALID_FIELD;
1582 return reply((struct ib_mad_hdr *)smp);
1583 }
1584
1585 get_sc2vlt_tables(dd, vp);
1586
1587 if (resp_len)
1588 *resp_len += size;
1589
1590 return reply((struct ib_mad_hdr *)smp);
1591 }
1592
1593 static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1594 struct ib_device *ibdev, u8 port,
1595 u32 *resp_len)
1596 {
1597 u32 n_blocks = OPA_AM_NBLK(am);
1598 int async_update = OPA_AM_ASYNC(am);
1599 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1600 void *vp = (void *) data;
1601 struct hfi1_pportdata *ppd;
1602 int lstate;
1603
1604 if (n_blocks != 1 || async_update) {
1605 smp->status |= IB_SMP_INVALID_FIELD;
1606 return reply((struct ib_mad_hdr *)smp);
1607 }
1608
1609 /* IB numbers ports from 1, hw from 0 */
1610 ppd = dd->pport + (port - 1);
1611 lstate = driver_lstate(ppd);
1612 /* it's known that async_update is 0 by this point, but include
1613 * the explicit check for clarity */
1614 if (!async_update &&
1615 (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) {
1616 smp->status |= IB_SMP_INVALID_FIELD;
1617 return reply((struct ib_mad_hdr *)smp);
1618 }
1619
1620 set_sc2vlt_tables(dd, vp);
1621
1622 return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len);
1623 }
1624
1625 static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1626 struct ib_device *ibdev, u8 port,
1627 u32 *resp_len)
1628 {
1629 u32 n_blocks = OPA_AM_NPORT(am);
1630 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1631 struct hfi1_pportdata *ppd;
1632 void *vp = (void *) data;
1633 int size;
1634
1635 if (n_blocks != 1) {
1636 smp->status |= IB_SMP_INVALID_FIELD;
1637 return reply((struct ib_mad_hdr *)smp);
1638 }
1639
1640 ppd = dd->pport + (port - 1);
1641
1642 size = fm_get_table(ppd, FM_TBL_SC2VLNT, vp);
1643
1644 if (resp_len)
1645 *resp_len += size;
1646
1647 return reply((struct ib_mad_hdr *)smp);
1648 }
1649
1650 static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1651 struct ib_device *ibdev, u8 port,
1652 u32 *resp_len)
1653 {
1654 u32 n_blocks = OPA_AM_NPORT(am);
1655 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1656 struct hfi1_pportdata *ppd;
1657 void *vp = (void *) data;
1658 int lstate;
1659
1660 if (n_blocks != 1) {
1661 smp->status |= IB_SMP_INVALID_FIELD;
1662 return reply((struct ib_mad_hdr *)smp);
1663 }
1664
1665 /* IB numbers ports from 1, hw from 0 */
1666 ppd = dd->pport + (port - 1);
1667 lstate = driver_lstate(ppd);
1668 if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) {
1669 smp->status |= IB_SMP_INVALID_FIELD;
1670 return reply((struct ib_mad_hdr *)smp);
1671 }
1672
1673 ppd = dd->pport + (port - 1);
1674
1675 fm_set_table(ppd, FM_TBL_SC2VLNT, vp);
1676
1677 return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
1678 resp_len);
1679 }
1680
1681 static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1682 struct ib_device *ibdev, u8 port,
1683 u32 *resp_len)
1684 {
1685 u32 nports = OPA_AM_NPORT(am);
1686 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1687 u32 lstate;
1688 struct hfi1_ibport *ibp;
1689 struct hfi1_pportdata *ppd;
1690 struct opa_port_state_info *psi = (struct opa_port_state_info *) data;
1691
1692 if (nports != 1) {
1693 smp->status |= IB_SMP_INVALID_FIELD;
1694 return reply((struct ib_mad_hdr *)smp);
1695 }
1696
1697 ibp = to_iport(ibdev, port);
1698 ppd = ppd_from_ibp(ibp);
1699
1700 lstate = driver_lstate(ppd);
1701
1702 if (start_of_sm_config && (lstate == IB_PORT_INIT))
1703 ppd->is_sm_config_started = 1;
1704
1705 #if PI_LED_ENABLE_SUP
1706 psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
1707 psi->port_states.ledenable_offlinereason |=
1708 ppd->is_sm_config_started << 5;
1709 psi->port_states.ledenable_offlinereason |=
1710 ppd->offline_disabled_reason & OPA_PI_MASK_OFFLINE_REASON;
1711 #else
1712 psi->port_states.offline_reason = ppd->neighbor_normal << 4;
1713 psi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
1714 psi->port_states.offline_reason |= ppd->offline_disabled_reason &
1715 OPA_PI_MASK_OFFLINE_REASON;
1716 #endif /* PI_LED_ENABLE_SUP */
1717
1718 psi->port_states.portphysstate_portstate =
1719 (hfi1_ibphys_portstate(ppd) << 4) | (lstate & 0xf);
1720 psi->link_width_downgrade_tx_active =
1721 cpu_to_be16(ppd->link_width_downgrade_tx_active);
1722 psi->link_width_downgrade_rx_active =
1723 cpu_to_be16(ppd->link_width_downgrade_rx_active);
1724 if (resp_len)
1725 *resp_len += sizeof(struct opa_port_state_info);
1726
1727 return reply((struct ib_mad_hdr *)smp);
1728 }
1729
1730 static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1731 struct ib_device *ibdev, u8 port,
1732 u32 *resp_len)
1733 {
1734 u32 nports = OPA_AM_NPORT(am);
1735 u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1736 u32 ls_old;
1737 u8 ls_new, ps_new;
1738 struct hfi1_ibport *ibp;
1739 struct hfi1_pportdata *ppd;
1740 struct opa_port_state_info *psi = (struct opa_port_state_info *) data;
1741 int ret, invalid = 0;
1742
1743 if (nports != 1) {
1744 smp->status |= IB_SMP_INVALID_FIELD;
1745 return reply((struct ib_mad_hdr *)smp);
1746 }
1747
1748 ibp = to_iport(ibdev, port);
1749 ppd = ppd_from_ibp(ibp);
1750
1751 ls_old = driver_lstate(ppd);
1752
1753 ls_new = port_states_to_logical_state(&psi->port_states);
1754 ps_new = port_states_to_phys_state(&psi->port_states);
1755
1756 if (ls_old == IB_PORT_INIT) {
1757 if (start_of_sm_config) {
1758 if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1759 ppd->is_sm_config_started = 1;
1760 } else if (ls_new == IB_PORT_ARMED) {
1761 if (ppd->is_sm_config_started == 0)
1762 invalid = 1;
1763 }
1764 }
1765
1766 ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1767 if (ret)
1768 return ret;
1769
1770 if (invalid)
1771 smp->status |= IB_SMP_INVALID_FIELD;
1772
1773 return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len);
1774 }
1775
1776 static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data,
1777 struct ib_device *ibdev, u8 port,
1778 u32 *resp_len)
1779 {
1780 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1781 u32 addr = OPA_AM_CI_ADDR(am);
1782 u32 len = OPA_AM_CI_LEN(am) + 1;
1783 int ret;
1784
1785 #define __CI_PAGE_SIZE (1 << 7) /* 128 bytes */
1786 #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1)
1787 #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK)
1788
1789 /* check that addr is within spec, and
1790 * addr and (addr + len - 1) are on the same "page" */
1791 if (addr >= 4096 ||
1792 (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) {
1793 smp->status |= IB_SMP_INVALID_FIELD;
1794 return reply((struct ib_mad_hdr *)smp);
1795 }
1796
1797 ret = get_cable_info(dd, port, addr, len, data);
1798
1799 if (ret == -ENODEV) {
1800 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1801 return reply((struct ib_mad_hdr *)smp);
1802 }
1803
1804 /* The address range for the CableInfo SMA query is wider than the
1805 * memory available on the QSFP cable. We want to return a valid
1806 * response, albeit zeroed out, for address ranges beyond available
1807 * memory but that are within the CableInfo query spec
1808 */
1809 if (ret < 0 && ret != -ERANGE) {
1810 smp->status |= IB_SMP_INVALID_FIELD;
1811 return reply((struct ib_mad_hdr *)smp);
1812 }
1813
1814 if (resp_len)
1815 *resp_len += len;
1816
1817 return reply((struct ib_mad_hdr *)smp);
1818 }
1819
1820 static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1821 struct ib_device *ibdev, u8 port, u32 *resp_len)
1822 {
1823 u32 num_ports = OPA_AM_NPORT(am);
1824 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1825 struct hfi1_pportdata *ppd;
1826 struct buffer_control *p = (struct buffer_control *) data;
1827 int size;
1828
1829 if (num_ports != 1) {
1830 smp->status |= IB_SMP_INVALID_FIELD;
1831 return reply((struct ib_mad_hdr *)smp);
1832 }
1833
1834 ppd = dd->pport + (port - 1);
1835 size = fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p);
1836 trace_bct_get(dd, p);
1837 if (resp_len)
1838 *resp_len += size;
1839
1840 return reply((struct ib_mad_hdr *)smp);
1841 }
1842
1843 static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1844 struct ib_device *ibdev, u8 port, u32 *resp_len)
1845 {
1846 u32 num_ports = OPA_AM_NPORT(am);
1847 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1848 struct hfi1_pportdata *ppd;
1849 struct buffer_control *p = (struct buffer_control *) data;
1850
1851 if (num_ports != 1) {
1852 smp->status |= IB_SMP_INVALID_FIELD;
1853 return reply((struct ib_mad_hdr *)smp);
1854 }
1855 ppd = dd->pport + (port - 1);
1856 trace_bct_set(dd, p);
1857 if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) {
1858 smp->status |= IB_SMP_INVALID_FIELD;
1859 return reply((struct ib_mad_hdr *)smp);
1860 }
1861
1862 return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len);
1863 }
1864
1865 static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1866 struct ib_device *ibdev, u8 port,
1867 u32 *resp_len)
1868 {
1869 struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1870 u32 num_ports = OPA_AM_NPORT(am);
1871 u8 section = (am & 0x00ff0000) >> 16;
1872 u8 *p = data;
1873 int size = 0;
1874
1875 if (num_ports != 1) {
1876 smp->status |= IB_SMP_INVALID_FIELD;
1877 return reply((struct ib_mad_hdr *)smp);
1878 }
1879
1880 switch (section) {
1881 case OPA_VLARB_LOW_ELEMENTS:
1882 size = fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p);
1883 break;
1884 case OPA_VLARB_HIGH_ELEMENTS:
1885 size = fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1886 break;
1887 case OPA_VLARB_PREEMPT_ELEMENTS:
1888 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p);
1889 break;
1890 case OPA_VLARB_PREEMPT_MATRIX:
1891 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p);
1892 break;
1893 default:
1894 pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n",
1895 be32_to_cpu(smp->attr_mod));
1896 smp->status |= IB_SMP_INVALID_FIELD;
1897 break;
1898 }
1899
1900 if (size > 0 && resp_len)
1901 *resp_len += size;
1902
1903 return reply((struct ib_mad_hdr *)smp);
1904 }
1905
1906 static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1907 struct ib_device *ibdev, u8 port,
1908 u32 *resp_len)
1909 {
1910 struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1911 u32 num_ports = OPA_AM_NPORT(am);
1912 u8 section = (am & 0x00ff0000) >> 16;
1913 u8 *p = data;
1914
1915 if (num_ports != 1) {
1916 smp->status |= IB_SMP_INVALID_FIELD;
1917 return reply((struct ib_mad_hdr *)smp);
1918 }
1919
1920 switch (section) {
1921 case OPA_VLARB_LOW_ELEMENTS:
1922 (void) fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
1923 break;
1924 case OPA_VLARB_HIGH_ELEMENTS:
1925 (void) fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1926 break;
1927 /* neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX
1928 * can be changed from the default values */
1929 case OPA_VLARB_PREEMPT_ELEMENTS:
1930 /* FALLTHROUGH */
1931 case OPA_VLARB_PREEMPT_MATRIX:
1932 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1933 break;
1934 default:
1935 pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n",
1936 be32_to_cpu(smp->attr_mod));
1937 smp->status |= IB_SMP_INVALID_FIELD;
1938 break;
1939 }
1940
1941 return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len);
1942 }
1943
1944 struct opa_pma_mad {
1945 struct ib_mad_hdr mad_hdr;
1946 u8 data[2024];
1947 } __packed;
1948
1949 struct opa_class_port_info {
1950 u8 base_version;
1951 u8 class_version;
1952 __be16 cap_mask;
1953 __be32 cap_mask2_resp_time;
1954
1955 u8 redirect_gid[16];
1956 __be32 redirect_tc_fl;
1957 __be32 redirect_lid;
1958 __be32 redirect_sl_qp;
1959 __be32 redirect_qkey;
1960
1961 u8 trap_gid[16];
1962 __be32 trap_tc_fl;
1963 __be32 trap_lid;
1964 __be32 trap_hl_qp;
1965 __be32 trap_qkey;
1966
1967 __be16 trap_pkey;
1968 __be16 redirect_pkey;
1969
1970 u8 trap_sl_rsvd;
1971 u8 reserved[3];
1972 } __packed;
1973
1974 struct opa_port_status_req {
1975 __u8 port_num;
1976 __u8 reserved[3];
1977 __be32 vl_select_mask;
1978 };
1979
1980 #define VL_MASK_ALL 0x000080ff
1981
1982 struct opa_port_status_rsp {
1983 __u8 port_num;
1984 __u8 reserved[3];
1985 __be32 vl_select_mask;
1986
1987 /* Data counters */
1988 __be64 port_xmit_data;
1989 __be64 port_rcv_data;
1990 __be64 port_xmit_pkts;
1991 __be64 port_rcv_pkts;
1992 __be64 port_multicast_xmit_pkts;
1993 __be64 port_multicast_rcv_pkts;
1994 __be64 port_xmit_wait;
1995 __be64 sw_port_congestion;
1996 __be64 port_rcv_fecn;
1997 __be64 port_rcv_becn;
1998 __be64 port_xmit_time_cong;
1999 __be64 port_xmit_wasted_bw;
2000 __be64 port_xmit_wait_data;
2001 __be64 port_rcv_bubble;
2002 __be64 port_mark_fecn;
2003 /* Error counters */
2004 __be64 port_rcv_constraint_errors;
2005 __be64 port_rcv_switch_relay_errors;
2006 __be64 port_xmit_discards;
2007 __be64 port_xmit_constraint_errors;
2008 __be64 port_rcv_remote_physical_errors;
2009 __be64 local_link_integrity_errors;
2010 __be64 port_rcv_errors;
2011 __be64 excessive_buffer_overruns;
2012 __be64 fm_config_errors;
2013 __be32 link_error_recovery;
2014 __be32 link_downed;
2015 u8 uncorrectable_errors;
2016
2017 u8 link_quality_indicator; /* 5res, 3bit */
2018 u8 res2[6];
2019 struct _vls_pctrs {
2020 /* per-VL Data counters */
2021 __be64 port_vl_xmit_data;
2022 __be64 port_vl_rcv_data;
2023 __be64 port_vl_xmit_pkts;
2024 __be64 port_vl_rcv_pkts;
2025 __be64 port_vl_xmit_wait;
2026 __be64 sw_port_vl_congestion;
2027 __be64 port_vl_rcv_fecn;
2028 __be64 port_vl_rcv_becn;
2029 __be64 port_xmit_time_cong;
2030 __be64 port_vl_xmit_wasted_bw;
2031 __be64 port_vl_xmit_wait_data;
2032 __be64 port_vl_rcv_bubble;
2033 __be64 port_vl_mark_fecn;
2034 __be64 port_vl_xmit_discards;
2035 } vls[0]; /* real array size defined by # bits set in vl_select_mask */
2036 };
2037
2038 enum counter_selects {
2039 CS_PORT_XMIT_DATA = (1 << 31),
2040 CS_PORT_RCV_DATA = (1 << 30),
2041 CS_PORT_XMIT_PKTS = (1 << 29),
2042 CS_PORT_RCV_PKTS = (1 << 28),
2043 CS_PORT_MCAST_XMIT_PKTS = (1 << 27),
2044 CS_PORT_MCAST_RCV_PKTS = (1 << 26),
2045 CS_PORT_XMIT_WAIT = (1 << 25),
2046 CS_SW_PORT_CONGESTION = (1 << 24),
2047 CS_PORT_RCV_FECN = (1 << 23),
2048 CS_PORT_RCV_BECN = (1 << 22),
2049 CS_PORT_XMIT_TIME_CONG = (1 << 21),
2050 CS_PORT_XMIT_WASTED_BW = (1 << 20),
2051 CS_PORT_XMIT_WAIT_DATA = (1 << 19),
2052 CS_PORT_RCV_BUBBLE = (1 << 18),
2053 CS_PORT_MARK_FECN = (1 << 17),
2054 CS_PORT_RCV_CONSTRAINT_ERRORS = (1 << 16),
2055 CS_PORT_RCV_SWITCH_RELAY_ERRORS = (1 << 15),
2056 CS_PORT_XMIT_DISCARDS = (1 << 14),
2057 CS_PORT_XMIT_CONSTRAINT_ERRORS = (1 << 13),
2058 CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS = (1 << 12),
2059 CS_LOCAL_LINK_INTEGRITY_ERRORS = (1 << 11),
2060 CS_PORT_RCV_ERRORS = (1 << 10),
2061 CS_EXCESSIVE_BUFFER_OVERRUNS = (1 << 9),
2062 CS_FM_CONFIG_ERRORS = (1 << 8),
2063 CS_LINK_ERROR_RECOVERY = (1 << 7),
2064 CS_LINK_DOWNED = (1 << 6),
2065 CS_UNCORRECTABLE_ERRORS = (1 << 5),
2066 };
2067
2068 struct opa_clear_port_status {
2069 __be64 port_select_mask[4];
2070 __be32 counter_select_mask;
2071 };
2072
2073 struct opa_aggregate {
2074 __be16 attr_id;
2075 __be16 err_reqlength; /* 1 bit, 8 res, 7 bit */
2076 __be32 attr_mod;
2077 u8 data[0];
2078 };
2079
2080 #define MSK_LLI 0x000000f0
2081 #define MSK_LLI_SFT 4
2082 #define MSK_LER 0x0000000f
2083 #define MSK_LER_SFT 0
2084 #define ADD_LLI 8
2085 #define ADD_LER 2
2086
2087 /* Request contains first three fields, response contains those plus the rest */
2088 struct opa_port_data_counters_msg {
2089 __be64 port_select_mask[4];
2090 __be32 vl_select_mask;
2091 __be32 resolution;
2092
2093 /* Response fields follow */
2094 struct _port_dctrs {
2095 u8 port_number;
2096 u8 reserved2[3];
2097 __be32 link_quality_indicator; /* 29res, 3bit */
2098
2099 /* Data counters */
2100 __be64 port_xmit_data;
2101 __be64 port_rcv_data;
2102 __be64 port_xmit_pkts;
2103 __be64 port_rcv_pkts;
2104 __be64 port_multicast_xmit_pkts;
2105 __be64 port_multicast_rcv_pkts;
2106 __be64 port_xmit_wait;
2107 __be64 sw_port_congestion;
2108 __be64 port_rcv_fecn;
2109 __be64 port_rcv_becn;
2110 __be64 port_xmit_time_cong;
2111 __be64 port_xmit_wasted_bw;
2112 __be64 port_xmit_wait_data;
2113 __be64 port_rcv_bubble;
2114 __be64 port_mark_fecn;
2115
2116 __be64 port_error_counter_summary;
2117 /* Sum of error counts/port */
2118
2119 struct _vls_dctrs {
2120 /* per-VL Data counters */
2121 __be64 port_vl_xmit_data;
2122 __be64 port_vl_rcv_data;
2123 __be64 port_vl_xmit_pkts;
2124 __be64 port_vl_rcv_pkts;
2125 __be64 port_vl_xmit_wait;
2126 __be64 sw_port_vl_congestion;
2127 __be64 port_vl_rcv_fecn;
2128 __be64 port_vl_rcv_becn;
2129 __be64 port_xmit_time_cong;
2130 __be64 port_vl_xmit_wasted_bw;
2131 __be64 port_vl_xmit_wait_data;
2132 __be64 port_vl_rcv_bubble;
2133 __be64 port_vl_mark_fecn;
2134 } vls[0];
2135 /* array size defined by #bits set in vl_select_mask*/
2136 } port[1]; /* array size defined by #ports in attribute modifier */
2137 };
2138
2139 struct opa_port_error_counters64_msg {
2140 /* Request contains first two fields, response contains the
2141 * whole magilla */
2142 __be64 port_select_mask[4];
2143 __be32 vl_select_mask;
2144
2145 /* Response-only fields follow */
2146 __be32 reserved1;
2147 struct _port_ectrs {
2148 u8 port_number;
2149 u8 reserved2[7];
2150 __be64 port_rcv_constraint_errors;
2151 __be64 port_rcv_switch_relay_errors;
2152 __be64 port_xmit_discards;
2153 __be64 port_xmit_constraint_errors;
2154 __be64 port_rcv_remote_physical_errors;
2155 __be64 local_link_integrity_errors;
2156 __be64 port_rcv_errors;
2157 __be64 excessive_buffer_overruns;
2158 __be64 fm_config_errors;
2159 __be32 link_error_recovery;
2160 __be32 link_downed;
2161 u8 uncorrectable_errors;
2162 u8 reserved3[7];
2163 struct _vls_ectrs {
2164 __be64 port_vl_xmit_discards;
2165 } vls[0];
2166 /* array size defined by #bits set in vl_select_mask */
2167 } port[1]; /* array size defined by #ports in attribute modifier */
2168 };
2169
2170 struct opa_port_error_info_msg {
2171 __be64 port_select_mask[4];
2172 __be32 error_info_select_mask;
2173 __be32 reserved1;
2174 struct _port_ei {
2175
2176 u8 port_number;
2177 u8 reserved2[7];
2178
2179 /* PortRcvErrorInfo */
2180 struct {
2181 u8 status_and_code;
2182 union {
2183 u8 raw[17];
2184 struct {
2185 /* EI1to12 format */
2186 u8 packet_flit1[8];
2187 u8 packet_flit2[8];
2188 u8 remaining_flit_bits12;
2189 } ei1to12;
2190 struct {
2191 u8 packet_bytes[8];
2192 u8 remaining_flit_bits;
2193 } ei13;
2194 } ei;
2195 u8 reserved3[6];
2196 } __packed port_rcv_ei;
2197
2198 /* ExcessiveBufferOverrunInfo */
2199 struct {
2200 u8 status_and_sc;
2201 u8 reserved4[7];
2202 } __packed excessive_buffer_overrun_ei;
2203
2204 /* PortXmitConstraintErrorInfo */
2205 struct {
2206 u8 status;
2207 u8 reserved5;
2208 __be16 pkey;
2209 __be32 slid;
2210 } __packed port_xmit_constraint_ei;
2211
2212 /* PortRcvConstraintErrorInfo */
2213 struct {
2214 u8 status;
2215 u8 reserved6;
2216 __be16 pkey;
2217 __be32 slid;
2218 } __packed port_rcv_constraint_ei;
2219
2220 /* PortRcvSwitchRelayErrorInfo */
2221 struct {
2222 u8 status_and_code;
2223 u8 reserved7[3];
2224 __u32 error_info;
2225 } __packed port_rcv_switch_relay_ei;
2226
2227 /* UncorrectableErrorInfo */
2228 struct {
2229 u8 status_and_code;
2230 u8 reserved8;
2231 } __packed uncorrectable_ei;
2232
2233 /* FMConfigErrorInfo */
2234 struct {
2235 u8 status_and_code;
2236 u8 error_info;
2237 } __packed fm_config_ei;
2238 __u32 reserved9;
2239 } port[1]; /* actual array size defined by #ports in attr modifier */
2240 };
2241
2242 /* opa_port_error_info_msg error_info_select_mask bit definitions */
2243 enum error_info_selects {
2244 ES_PORT_RCV_ERROR_INFO = (1 << 31),
2245 ES_EXCESSIVE_BUFFER_OVERRUN_INFO = (1 << 30),
2246 ES_PORT_XMIT_CONSTRAINT_ERROR_INFO = (1 << 29),
2247 ES_PORT_RCV_CONSTRAINT_ERROR_INFO = (1 << 28),
2248 ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO = (1 << 27),
2249 ES_UNCORRECTABLE_ERROR_INFO = (1 << 26),
2250 ES_FM_CONFIG_ERROR_INFO = (1 << 25)
2251 };
2252
2253 static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp,
2254 struct ib_device *ibdev, u32 *resp_len)
2255 {
2256 struct opa_class_port_info *p =
2257 (struct opa_class_port_info *)pmp->data;
2258
2259 memset(pmp->data, 0, sizeof(pmp->data));
2260
2261 if (pmp->mad_hdr.attr_mod != 0)
2262 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2263
2264 p->base_version = OPA_MGMT_BASE_VERSION;
2265 p->class_version = OPA_SMI_CLASS_VERSION;
2266 /*
2267 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2268 */
2269 p->cap_mask2_resp_time = cpu_to_be32(18);
2270
2271 if (resp_len)
2272 *resp_len += sizeof(*p);
2273
2274 return reply((struct ib_mad_hdr *)pmp);
2275 }
2276
2277 static void a0_portstatus(struct hfi1_pportdata *ppd,
2278 struct opa_port_status_rsp *rsp, u32 vl_select_mask)
2279 {
2280 if (!is_bx(ppd->dd)) {
2281 unsigned long vl;
2282 u64 max_vl_xmit_wait = 0, tmp;
2283 u32 vl_all_mask = VL_MASK_ALL;
2284
2285 for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
2286 8 * sizeof(vl_all_mask)) {
2287 tmp = read_port_cntr(ppd, C_TX_WAIT_VL,
2288 idx_from_vl(vl));
2289 if (tmp > max_vl_xmit_wait)
2290 max_vl_xmit_wait = tmp;
2291 }
2292 rsp->port_xmit_wait = cpu_to_be64(max_vl_xmit_wait);
2293 }
2294 }
2295
2296
2297 static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
2298 struct ib_device *ibdev, u8 port, u32 *resp_len)
2299 {
2300 struct opa_port_status_req *req =
2301 (struct opa_port_status_req *)pmp->data;
2302 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2303 struct opa_port_status_rsp *rsp;
2304 u32 vl_select_mask = be32_to_cpu(req->vl_select_mask);
2305 unsigned long vl;
2306 size_t response_data_size;
2307 u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2308 u8 port_num = req->port_num;
2309 u8 num_vls = hweight32(vl_select_mask);
2310 struct _vls_pctrs *vlinfo;
2311 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2312 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2313 int vfi;
2314 u64 tmp, tmp2;
2315
2316 response_data_size = sizeof(struct opa_port_status_rsp) +
2317 num_vls * sizeof(struct _vls_pctrs);
2318 if (response_data_size > sizeof(pmp->data)) {
2319 pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE;
2320 return reply((struct ib_mad_hdr *)pmp);
2321 }
2322
2323 if (nports != 1 || (port_num && port_num != port)
2324 || num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) {
2325 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2326 return reply((struct ib_mad_hdr *)pmp);
2327 }
2328
2329 memset(pmp->data, 0, sizeof(pmp->data));
2330
2331 rsp = (struct opa_port_status_rsp *)pmp->data;
2332 if (port_num)
2333 rsp->port_num = port_num;
2334 else
2335 rsp->port_num = port;
2336
2337 rsp->port_rcv_constraint_errors =
2338 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2339 CNTR_INVALID_VL));
2340
2341 hfi1_read_link_quality(dd, &rsp->link_quality_indicator);
2342
2343 rsp->vl_select_mask = cpu_to_be32(vl_select_mask);
2344 rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2345 CNTR_INVALID_VL));
2346 rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2347 CNTR_INVALID_VL));
2348 rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2349 CNTR_INVALID_VL));
2350 rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2351 CNTR_INVALID_VL));
2352 rsp->port_multicast_xmit_pkts =
2353 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2354 CNTR_INVALID_VL));
2355 rsp->port_multicast_rcv_pkts =
2356 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2357 CNTR_INVALID_VL));
2358 rsp->port_xmit_wait =
2359 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2360 rsp->port_rcv_fecn =
2361 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2362 rsp->port_rcv_becn =
2363 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2364 rsp->port_xmit_discards =
2365 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2366 CNTR_INVALID_VL));
2367 rsp->port_xmit_constraint_errors =
2368 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2369 CNTR_INVALID_VL));
2370 rsp->port_rcv_remote_physical_errors =
2371 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2372 CNTR_INVALID_VL));
2373 tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2374 tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2375 if (tmp2 < tmp) {
2376 /* overflow/wrapped */
2377 rsp->local_link_integrity_errors = cpu_to_be64(~0);
2378 } else {
2379 rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
2380 }
2381 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2382 tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2383 CNTR_INVALID_VL);
2384 if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2385 /* overflow/wrapped */
2386 rsp->link_error_recovery = cpu_to_be32(~0);
2387 } else {
2388 rsp->link_error_recovery = cpu_to_be32(tmp2);
2389 }
2390 rsp->port_rcv_errors =
2391 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2392 rsp->excessive_buffer_overruns =
2393 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2394 rsp->fm_config_errors =
2395 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2396 CNTR_INVALID_VL));
2397 rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2398 CNTR_INVALID_VL));
2399
2400 /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */
2401 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2402 rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2403
2404 vlinfo = &(rsp->vls[0]);
2405 vfi = 0;
2406 /* The vl_select_mask has been checked above, and we know
2407 * that it contains only entries which represent valid VLs.
2408 * So in the for_each_set_bit() loop below, we don't need
2409 * any additional checks for vl.
2410 */
2411 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2412 8 * sizeof(vl_select_mask)) {
2413 memset(vlinfo, 0, sizeof(*vlinfo));
2414
2415 tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
2416 rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
2417
2418 rsp->vls[vfi].port_vl_rcv_pkts =
2419 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2420 idx_from_vl(vl)));
2421
2422 rsp->vls[vfi].port_vl_xmit_data =
2423 cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2424 idx_from_vl(vl)));
2425
2426 rsp->vls[vfi].port_vl_xmit_pkts =
2427 cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2428 idx_from_vl(vl)));
2429
2430 rsp->vls[vfi].port_vl_xmit_wait =
2431 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2432 idx_from_vl(vl)));
2433
2434 rsp->vls[vfi].port_vl_rcv_fecn =
2435 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2436 idx_from_vl(vl)));
2437
2438 rsp->vls[vfi].port_vl_rcv_becn =
2439 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2440 idx_from_vl(vl)));
2441
2442 vlinfo++;
2443 vfi++;
2444 }
2445
2446 a0_portstatus(ppd, rsp, vl_select_mask);
2447
2448 if (resp_len)
2449 *resp_len += response_data_size;
2450
2451 return reply((struct ib_mad_hdr *)pmp);
2452 }
2453
2454 static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port,
2455 u8 res_lli, u8 res_ler)
2456 {
2457 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2458 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2459 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2460 u64 error_counter_summary = 0, tmp;
2461
2462 error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2463 CNTR_INVALID_VL);
2464 /* port_rcv_switch_relay_errors is 0 for HFIs */
2465 error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD,
2466 CNTR_INVALID_VL);
2467 error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2468 CNTR_INVALID_VL);
2469 error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2470 CNTR_INVALID_VL);
2471 /* local link integrity must be right-shifted by the lli resolution */
2472 tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2473 tmp += read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2474 error_counter_summary += (tmp >> res_lli);
2475 /* link error recovery must b right-shifted by the ler resolution */
2476 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2477 tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
2478 error_counter_summary += (tmp >> res_ler);
2479 error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR,
2480 CNTR_INVALID_VL);
2481 error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL);
2482 error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2483 CNTR_INVALID_VL);
2484 /* ppd->link_downed is a 32-bit value */
2485 error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN,
2486 CNTR_INVALID_VL);
2487 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2488 /* this is an 8-bit quantity */
2489 error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff;
2490
2491 return error_counter_summary;
2492 }
2493
2494 static void a0_datacounters(struct hfi1_devdata *dd, struct _port_dctrs *rsp,
2495 u32 vl_select_mask)
2496 {
2497 if (!is_bx(dd)) {
2498 unsigned long vl;
2499 int vfi = 0;
2500 u64 sum_vl_xmit_wait = 0;
2501
2502 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2503 8 * sizeof(vl_select_mask)) {
2504 u64 tmp = sum_vl_xmit_wait +
2505 be64_to_cpu(rsp->vls[vfi++].port_vl_xmit_wait);
2506 if (tmp < sum_vl_xmit_wait) {
2507 /* we wrapped */
2508 sum_vl_xmit_wait = (u64) ~0;
2509 break;
2510 }
2511 sum_vl_xmit_wait = tmp;
2512 }
2513 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2514 rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2515 }
2516 }
2517
2518 static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
2519 struct ib_device *ibdev, u8 port, u32 *resp_len)
2520 {
2521 struct opa_port_data_counters_msg *req =
2522 (struct opa_port_data_counters_msg *)pmp->data;
2523 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2524 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2525 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2526 struct _port_dctrs *rsp;
2527 struct _vls_dctrs *vlinfo;
2528 size_t response_data_size;
2529 u32 num_ports;
2530 u8 num_pslm;
2531 u8 lq, num_vls;
2532 u8 res_lli, res_ler;
2533 u64 port_mask;
2534 unsigned long port_num;
2535 unsigned long vl;
2536 u32 vl_select_mask;
2537 int vfi;
2538
2539 num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2540 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2541 num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2542 vl_select_mask = be32_to_cpu(req->vl_select_mask);
2543 res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT;
2544 res_lli = res_lli ? res_lli + ADD_LLI : 0;
2545 res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT;
2546 res_ler = res_ler ? res_ler + ADD_LER : 0;
2547
2548 if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) {
2549 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2550 return reply((struct ib_mad_hdr *)pmp);
2551 }
2552
2553 /* Sanity check */
2554 response_data_size = sizeof(struct opa_port_data_counters_msg) +
2555 num_vls * sizeof(struct _vls_dctrs);
2556
2557 if (response_data_size > sizeof(pmp->data)) {
2558 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2559 return reply((struct ib_mad_hdr *)pmp);
2560 }
2561
2562 /*
2563 * The bit set in the mask needs to be consistent with the
2564 * port the request came in on.
2565 */
2566 port_mask = be64_to_cpu(req->port_select_mask[3]);
2567 port_num = find_first_bit((unsigned long *)&port_mask,
2568 sizeof(port_mask));
2569
2570 if ((u8)port_num != port) {
2571 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2572 return reply((struct ib_mad_hdr *)pmp);
2573 }
2574
2575 rsp = (struct _port_dctrs *)&(req->port[0]);
2576 memset(rsp, 0, sizeof(*rsp));
2577
2578 rsp->port_number = port;
2579 /*
2580 * Note that link_quality_indicator is a 32 bit quantity in
2581 * 'datacounters' queries (as opposed to 'portinfo' queries,
2582 * where it's a byte).
2583 */
2584 hfi1_read_link_quality(dd, &lq);
2585 rsp->link_quality_indicator = cpu_to_be32((u32)lq);
2586
2587 /* rsp->sw_port_congestion is 0 for HFIs */
2588 /* rsp->port_xmit_time_cong is 0 for HFIs */
2589 /* rsp->port_xmit_wasted_bw ??? */
2590 /* rsp->port_xmit_wait_data ??? */
2591 /* rsp->port_mark_fecn is 0 for HFIs */
2592
2593 rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2594 CNTR_INVALID_VL));
2595 rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2596 CNTR_INVALID_VL));
2597 rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2598 CNTR_INVALID_VL));
2599 rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2600 CNTR_INVALID_VL));
2601 rsp->port_multicast_xmit_pkts =
2602 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2603 CNTR_INVALID_VL));
2604 rsp->port_multicast_rcv_pkts =
2605 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2606 CNTR_INVALID_VL));
2607 rsp->port_xmit_wait =
2608 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2609 rsp->port_rcv_fecn =
2610 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2611 rsp->port_rcv_becn =
2612 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2613
2614 rsp->port_error_counter_summary =
2615 cpu_to_be64(get_error_counter_summary(ibdev, port,
2616 res_lli, res_ler));
2617
2618 vlinfo = &(rsp->vls[0]);
2619 vfi = 0;
2620 /* The vl_select_mask has been checked above, and we know
2621 * that it contains only entries which represent valid VLs.
2622 * So in the for_each_set_bit() loop below, we don't need
2623 * any additional checks for vl.
2624 */
2625 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2626 8 * sizeof(req->vl_select_mask)) {
2627 memset(vlinfo, 0, sizeof(*vlinfo));
2628
2629 rsp->vls[vfi].port_vl_xmit_data =
2630 cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2631 idx_from_vl(vl)));
2632
2633 rsp->vls[vfi].port_vl_rcv_data =
2634 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
2635 idx_from_vl(vl)));
2636
2637 rsp->vls[vfi].port_vl_xmit_pkts =
2638 cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2639 idx_from_vl(vl)));
2640
2641 rsp->vls[vfi].port_vl_rcv_pkts =
2642 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2643 idx_from_vl(vl)));
2644
2645 rsp->vls[vfi].port_vl_xmit_wait =
2646 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2647 idx_from_vl(vl)));
2648
2649 rsp->vls[vfi].port_vl_rcv_fecn =
2650 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2651 idx_from_vl(vl)));
2652 rsp->vls[vfi].port_vl_rcv_becn =
2653 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2654 idx_from_vl(vl)));
2655
2656 /* rsp->port_vl_xmit_time_cong is 0 for HFIs */
2657 /* rsp->port_vl_xmit_wasted_bw ??? */
2658 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ???
2659 * does this differ from rsp->vls[vfi].port_vl_xmit_wait */
2660 /*rsp->vls[vfi].port_vl_mark_fecn =
2661 cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT
2662 + offset));
2663 */
2664 vlinfo++;
2665 vfi++;
2666 }
2667
2668 a0_datacounters(dd, rsp, vl_select_mask);
2669
2670 if (resp_len)
2671 *resp_len += response_data_size;
2672
2673 return reply((struct ib_mad_hdr *)pmp);
2674 }
2675
2676 static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
2677 struct ib_device *ibdev, u8 port, u32 *resp_len)
2678 {
2679 size_t response_data_size;
2680 struct _port_ectrs *rsp;
2681 unsigned long port_num;
2682 struct opa_port_error_counters64_msg *req;
2683 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2684 u32 num_ports;
2685 u8 num_pslm;
2686 u8 num_vls;
2687 struct hfi1_ibport *ibp;
2688 struct hfi1_pportdata *ppd;
2689 struct _vls_ectrs *vlinfo;
2690 unsigned long vl;
2691 u64 port_mask, tmp, tmp2;
2692 u32 vl_select_mask;
2693 int vfi;
2694
2695 req = (struct opa_port_error_counters64_msg *)pmp->data;
2696
2697 num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2698
2699 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2700 num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2701
2702 if (num_ports != 1 || num_ports != num_pslm) {
2703 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2704 return reply((struct ib_mad_hdr *)pmp);
2705 }
2706
2707 response_data_size = sizeof(struct opa_port_error_counters64_msg) +
2708 num_vls * sizeof(struct _vls_ectrs);
2709
2710 if (response_data_size > sizeof(pmp->data)) {
2711 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2712 return reply((struct ib_mad_hdr *)pmp);
2713 }
2714 /*
2715 * The bit set in the mask needs to be consistent with the
2716 * port the request came in on.
2717 */
2718 port_mask = be64_to_cpu(req->port_select_mask[3]);
2719 port_num = find_first_bit((unsigned long *)&port_mask,
2720 sizeof(port_mask));
2721
2722 if ((u8)port_num != port) {
2723 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2724 return reply((struct ib_mad_hdr *)pmp);
2725 }
2726
2727 rsp = (struct _port_ectrs *)&(req->port[0]);
2728
2729 ibp = to_iport(ibdev, port_num);
2730 ppd = ppd_from_ibp(ibp);
2731
2732 memset(rsp, 0, sizeof(*rsp));
2733 rsp->port_number = (u8)port_num;
2734
2735 rsp->port_rcv_constraint_errors =
2736 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2737 CNTR_INVALID_VL));
2738 /* port_rcv_switch_relay_errors is 0 for HFIs */
2739 rsp->port_xmit_discards =
2740 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2741 CNTR_INVALID_VL));
2742 rsp->port_rcv_remote_physical_errors =
2743 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2744 CNTR_INVALID_VL));
2745 tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2746 tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2747 if (tmp2 < tmp) {
2748 /* overflow/wrapped */
2749 rsp->local_link_integrity_errors = cpu_to_be64(~0);
2750 } else {
2751 rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
2752 }
2753 tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2754 tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2755 CNTR_INVALID_VL);
2756 if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2757 /* overflow/wrapped */
2758 rsp->link_error_recovery = cpu_to_be32(~0);
2759 } else {
2760 rsp->link_error_recovery = cpu_to_be32(tmp2);
2761 }
2762 rsp->port_xmit_constraint_errors =
2763 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2764 CNTR_INVALID_VL));
2765 rsp->excessive_buffer_overruns =
2766 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2767 rsp->fm_config_errors =
2768 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2769 CNTR_INVALID_VL));
2770 rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2771 CNTR_INVALID_VL));
2772 tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2773 rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2774
2775 vlinfo = (struct _vls_ectrs *)&(rsp->vls[0]);
2776 vfi = 0;
2777 vl_select_mask = be32_to_cpu(req->vl_select_mask);
2778 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2779 8 * sizeof(req->vl_select_mask)) {
2780 memset(vlinfo, 0, sizeof(*vlinfo));
2781 /* vlinfo->vls[vfi].port_vl_xmit_discards ??? */
2782 vlinfo += 1;
2783 vfi++;
2784 }
2785
2786 if (resp_len)
2787 *resp_len += response_data_size;
2788
2789 return reply((struct ib_mad_hdr *)pmp);
2790 }
2791
2792 static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp,
2793 struct ib_device *ibdev, u8 port, u32 *resp_len)
2794 {
2795 size_t response_data_size;
2796 struct _port_ei *rsp;
2797 struct opa_port_error_info_msg *req;
2798 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2799 u64 port_mask;
2800 u32 num_ports;
2801 unsigned long port_num;
2802 u8 num_pslm;
2803 u64 reg;
2804
2805 req = (struct opa_port_error_info_msg *)pmp->data;
2806 rsp = (struct _port_ei *)&(req->port[0]);
2807
2808 num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
2809 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2810
2811 memset(rsp, 0, sizeof(*rsp));
2812
2813 if (num_ports != 1 || num_ports != num_pslm) {
2814 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2815 return reply((struct ib_mad_hdr *)pmp);
2816 }
2817
2818 /* Sanity check */
2819 response_data_size = sizeof(struct opa_port_error_info_msg);
2820
2821 if (response_data_size > sizeof(pmp->data)) {
2822 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2823 return reply((struct ib_mad_hdr *)pmp);
2824 }
2825
2826 /*
2827 * The bit set in the mask needs to be consistent with the port
2828 * the request came in on.
2829 */
2830 port_mask = be64_to_cpu(req->port_select_mask[3]);
2831 port_num = find_first_bit((unsigned long *)&port_mask,
2832 sizeof(port_mask));
2833
2834 if ((u8)port_num != port) {
2835 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2836 return reply((struct ib_mad_hdr *)pmp);
2837 }
2838
2839 /* PortRcvErrorInfo */
2840 rsp->port_rcv_ei.status_and_code =
2841 dd->err_info_rcvport.status_and_code;
2842 memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1,
2843 &dd->err_info_rcvport.packet_flit1, sizeof(u64));
2844 memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2,
2845 &dd->err_info_rcvport.packet_flit2, sizeof(u64));
2846
2847 /* ExcessiverBufferOverrunInfo */
2848 reg = read_csr(dd, RCV_ERR_INFO);
2849 if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) {
2850 /* if the RcvExcessBufferOverrun bit is set, save SC of
2851 * first pkt that encountered an excess buffer overrun */
2852 u8 tmp = (u8)reg;
2853
2854 tmp &= RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK;
2855 tmp <<= 2;
2856 rsp->excessive_buffer_overrun_ei.status_and_sc = tmp;
2857 /* set the status bit */
2858 rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80;
2859 }
2860
2861 rsp->port_xmit_constraint_ei.status =
2862 dd->err_info_xmit_constraint.status;
2863 rsp->port_xmit_constraint_ei.pkey =
2864 cpu_to_be16(dd->err_info_xmit_constraint.pkey);
2865 rsp->port_xmit_constraint_ei.slid =
2866 cpu_to_be32(dd->err_info_xmit_constraint.slid);
2867
2868 rsp->port_rcv_constraint_ei.status =
2869 dd->err_info_rcv_constraint.status;
2870 rsp->port_rcv_constraint_ei.pkey =
2871 cpu_to_be16(dd->err_info_rcv_constraint.pkey);
2872 rsp->port_rcv_constraint_ei.slid =
2873 cpu_to_be32(dd->err_info_rcv_constraint.slid);
2874
2875 /* UncorrectableErrorInfo */
2876 rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable;
2877
2878 /* FMConfigErrorInfo */
2879 rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig;
2880
2881 if (resp_len)
2882 *resp_len += response_data_size;
2883
2884 return reply((struct ib_mad_hdr *)pmp);
2885 }
2886
2887 static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
2888 struct ib_device *ibdev, u8 port, u32 *resp_len)
2889 {
2890 struct opa_clear_port_status *req =
2891 (struct opa_clear_port_status *)pmp->data;
2892 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2893 struct hfi1_ibport *ibp = to_iport(ibdev, port);
2894 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2895 u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2896 u64 portn = be64_to_cpu(req->port_select_mask[3]);
2897 u32 counter_select = be32_to_cpu(req->counter_select_mask);
2898 u32 vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */
2899 unsigned long vl;
2900
2901 if ((nports != 1) || (portn != 1 << port)) {
2902 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2903 return reply((struct ib_mad_hdr *)pmp);
2904 }
2905 /*
2906 * only counters returned by pma_get_opa_portstatus() are
2907 * handled, so when pma_get_opa_portstatus() gets a fix,
2908 * the corresponding change should be made here as well.
2909 */
2910
2911 if (counter_select & CS_PORT_XMIT_DATA)
2912 write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0);
2913
2914 if (counter_select & CS_PORT_RCV_DATA)
2915 write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0);
2916
2917 if (counter_select & CS_PORT_XMIT_PKTS)
2918 write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0);
2919
2920 if (counter_select & CS_PORT_RCV_PKTS)
2921 write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0);
2922
2923 if (counter_select & CS_PORT_MCAST_XMIT_PKTS)
2924 write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0);
2925
2926 if (counter_select & CS_PORT_MCAST_RCV_PKTS)
2927 write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
2928
2929 if (counter_select & CS_PORT_XMIT_WAIT)
2930 write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
2931
2932 /* ignore cs_sw_portCongestion for HFIs */
2933
2934 if (counter_select & CS_PORT_RCV_FECN)
2935 write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0);
2936
2937 if (counter_select & CS_PORT_RCV_BECN)
2938 write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0);
2939
2940 /* ignore cs_port_xmit_time_cong for HFIs */
2941 /* ignore cs_port_xmit_wasted_bw for now */
2942 /* ignore cs_port_xmit_wait_data for now */
2943 if (counter_select & CS_PORT_RCV_BUBBLE)
2944 write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0);
2945
2946 /* Only applicable for switch */
2947 /*if (counter_select & CS_PORT_MARK_FECN)
2948 write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);*/
2949
2950 if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS)
2951 write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0);
2952
2953 /* ignore cs_port_rcv_switch_relay_errors for HFIs */
2954 if (counter_select & CS_PORT_XMIT_DISCARDS)
2955 write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0);
2956
2957 if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS)
2958 write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0);
2959
2960 if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
2961 write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
2962
2963 if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS) {
2964 write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
2965 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
2966 }
2967
2968 if (counter_select & CS_LINK_ERROR_RECOVERY) {
2969 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
2970 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2971 CNTR_INVALID_VL, 0);
2972 }
2973
2974 if (counter_select & CS_PORT_RCV_ERRORS)
2975 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
2976
2977 if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) {
2978 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
2979 dd->rcv_ovfl_cnt = 0;
2980 }
2981
2982 if (counter_select & CS_FM_CONFIG_ERRORS)
2983 write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0);
2984
2985 if (counter_select & CS_LINK_DOWNED)
2986 write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0);
2987
2988 if (counter_select & CS_UNCORRECTABLE_ERRORS)
2989 write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0);
2990
2991 for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2992 8 * sizeof(vl_select_mask)) {
2993
2994 if (counter_select & CS_PORT_XMIT_DATA)
2995 write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0);
2996
2997 if (counter_select & CS_PORT_RCV_DATA)
2998 write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0);
2999
3000 if (counter_select & CS_PORT_XMIT_PKTS)
3001 write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0);
3002
3003 if (counter_select & CS_PORT_RCV_PKTS)
3004 write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
3005
3006 if (counter_select & CS_PORT_XMIT_WAIT)
3007 write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
3008
3009 /* sw_port_vl_congestion is 0 for HFIs */
3010 if (counter_select & CS_PORT_RCV_FECN)
3011 write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0);
3012
3013 if (counter_select & CS_PORT_RCV_BECN)
3014 write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0);
3015
3016 /* port_vl_xmit_time_cong is 0 for HFIs */
3017 /* port_vl_xmit_wasted_bw ??? */
3018 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */
3019 if (counter_select & CS_PORT_RCV_BUBBLE)
3020 write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0);
3021
3022 /*if (counter_select & CS_PORT_MARK_FECN)
3023 write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
3024 */
3025 /* port_vl_xmit_discards ??? */
3026 }
3027
3028 if (resp_len)
3029 *resp_len += sizeof(*req);
3030
3031 return reply((struct ib_mad_hdr *)pmp);
3032 }
3033
3034 static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp,
3035 struct ib_device *ibdev, u8 port, u32 *resp_len)
3036 {
3037 struct _port_ei *rsp;
3038 struct opa_port_error_info_msg *req;
3039 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3040 u64 port_mask;
3041 u32 num_ports;
3042 unsigned long port_num;
3043 u8 num_pslm;
3044 u32 error_info_select;
3045
3046 req = (struct opa_port_error_info_msg *)pmp->data;
3047 rsp = (struct _port_ei *)&(req->port[0]);
3048
3049 num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3050 num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3051
3052 memset(rsp, 0, sizeof(*rsp));
3053
3054 if (num_ports != 1 || num_ports != num_pslm) {
3055 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3056 return reply((struct ib_mad_hdr *)pmp);
3057 }
3058
3059 /*
3060 * The bit set in the mask needs to be consistent with the port
3061 * the request came in on.
3062 */
3063 port_mask = be64_to_cpu(req->port_select_mask[3]);
3064 port_num = find_first_bit((unsigned long *)&port_mask,
3065 sizeof(port_mask));
3066
3067 if ((u8)port_num != port) {
3068 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3069 return reply((struct ib_mad_hdr *)pmp);
3070 }
3071
3072 error_info_select = be32_to_cpu(req->error_info_select_mask);
3073
3074 /* PortRcvErrorInfo */
3075 if (error_info_select & ES_PORT_RCV_ERROR_INFO)
3076 /* turn off status bit */
3077 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3078
3079 /* ExcessiverBufferOverrunInfo */
3080 if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO)
3081 /* status bit is essentially kept in the h/w - bit 5 of
3082 * RCV_ERR_INFO */
3083 write_csr(dd, RCV_ERR_INFO,
3084 RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK);
3085
3086 if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO)
3087 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3088
3089 if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO)
3090 dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK;
3091
3092 /* UncorrectableErrorInfo */
3093 if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO)
3094 /* turn off status bit */
3095 dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK;
3096
3097 /* FMConfigErrorInfo */
3098 if (error_info_select & ES_FM_CONFIG_ERROR_INFO)
3099 /* turn off status bit */
3100 dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK;
3101
3102 if (resp_len)
3103 *resp_len += sizeof(*req);
3104
3105 return reply((struct ib_mad_hdr *)pmp);
3106 }
3107
3108 struct opa_congestion_info_attr {
3109 __be16 congestion_info;
3110 u8 control_table_cap; /* Multiple of 64 entry unit CCTs */
3111 u8 congestion_log_length;
3112 } __packed;
3113
3114 static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data,
3115 struct ib_device *ibdev, u8 port,
3116 u32 *resp_len)
3117 {
3118 struct opa_congestion_info_attr *p =
3119 (struct opa_congestion_info_attr *)data;
3120 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3121 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3122
3123 p->congestion_info = 0;
3124 p->control_table_cap = ppd->cc_max_table_entries;
3125 p->congestion_log_length = OPA_CONG_LOG_ELEMS;
3126
3127 if (resp_len)
3128 *resp_len += sizeof(*p);
3129
3130 return reply((struct ib_mad_hdr *)smp);
3131 }
3132
3133 static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am,
3134 u8 *data,
3135 struct ib_device *ibdev,
3136 u8 port, u32 *resp_len)
3137 {
3138 int i;
3139 struct opa_congestion_setting_attr *p =
3140 (struct opa_congestion_setting_attr *) data;
3141 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3142 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3143 struct opa_congestion_setting_entry_shadow *entries;
3144 struct cc_state *cc_state;
3145
3146 rcu_read_lock();
3147
3148 cc_state = get_cc_state(ppd);
3149
3150 if (cc_state == NULL) {
3151 rcu_read_unlock();
3152 return reply((struct ib_mad_hdr *)smp);
3153 }
3154
3155 entries = cc_state->cong_setting.entries;
3156 p->port_control = cpu_to_be16(cc_state->cong_setting.port_control);
3157 p->control_map = cpu_to_be32(cc_state->cong_setting.control_map);
3158 for (i = 0; i < OPA_MAX_SLS; i++) {
3159 p->entries[i].ccti_increase = entries[i].ccti_increase;
3160 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
3161 p->entries[i].trigger_threshold =
3162 entries[i].trigger_threshold;
3163 p->entries[i].ccti_min = entries[i].ccti_min;
3164 }
3165
3166 rcu_read_unlock();
3167
3168 if (resp_len)
3169 *resp_len += sizeof(*p);
3170
3171 return reply((struct ib_mad_hdr *)smp);
3172 }
3173
3174 static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data,
3175 struct ib_device *ibdev, u8 port,
3176 u32 *resp_len)
3177 {
3178 struct opa_congestion_setting_attr *p =
3179 (struct opa_congestion_setting_attr *) data;
3180 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3181 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3182 struct opa_congestion_setting_entry_shadow *entries;
3183 int i;
3184
3185 ppd->cc_sl_control_map = be32_to_cpu(p->control_map);
3186
3187 entries = ppd->congestion_entries;
3188 for (i = 0; i < OPA_MAX_SLS; i++) {
3189 entries[i].ccti_increase = p->entries[i].ccti_increase;
3190 entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer);
3191 entries[i].trigger_threshold =
3192 p->entries[i].trigger_threshold;
3193 entries[i].ccti_min = p->entries[i].ccti_min;
3194 }
3195
3196 return __subn_get_opa_cong_setting(smp, am, data, ibdev, port,
3197 resp_len);
3198 }
3199
3200 static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am,
3201 u8 *data, struct ib_device *ibdev,
3202 u8 port, u32 *resp_len)
3203 {
3204 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3205 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3206 struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data;
3207 s64 ts;
3208 int i;
3209
3210 if (am != 0) {
3211 smp->status |= IB_SMP_INVALID_FIELD;
3212 return reply((struct ib_mad_hdr *)smp);
3213 }
3214
3215 spin_lock_irq(&ppd->cc_log_lock);
3216
3217 cong_log->log_type = OPA_CC_LOG_TYPE_HFI;
3218 cong_log->congestion_flags = 0;
3219 cong_log->threshold_event_counter =
3220 cpu_to_be16(ppd->threshold_event_counter);
3221 memcpy(cong_log->threshold_cong_event_map,
3222 ppd->threshold_cong_event_map,
3223 sizeof(cong_log->threshold_cong_event_map));
3224 /* keep timestamp in units of 1.024 usec */
3225 ts = ktime_to_ns(ktime_get()) / 1024;
3226 cong_log->current_time_stamp = cpu_to_be32(ts);
3227 for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) {
3228 struct opa_hfi1_cong_log_event_internal *cce =
3229 &ppd->cc_events[ppd->cc_mad_idx++];
3230 if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS)
3231 ppd->cc_mad_idx = 0;
3232 /*
3233 * Entries which are older than twice the time
3234 * required to wrap the counter are supposed to
3235 * be zeroed (CA10-49 IBTA, release 1.2.1, V1).
3236 */
3237 if ((u64)(ts - cce->timestamp) > (2 * UINT_MAX))
3238 continue;
3239 memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3);
3240 memcpy(cong_log->events[i].remote_qp_number_cn_entry,
3241 &cce->rqpn, 3);
3242 cong_log->events[i].sl_svc_type_cn_entry =
3243 ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7);
3244 cong_log->events[i].remote_lid_cn_entry =
3245 cpu_to_be32(cce->rlid);
3246 cong_log->events[i].timestamp_cn_entry =
3247 cpu_to_be32(cce->timestamp);
3248 }
3249
3250 /*
3251 * Reset threshold_cong_event_map, and threshold_event_counter
3252 * to 0 when log is read.
3253 */
3254 memset(ppd->threshold_cong_event_map, 0x0,
3255 sizeof(ppd->threshold_cong_event_map));
3256 ppd->threshold_event_counter = 0;
3257
3258 spin_unlock_irq(&ppd->cc_log_lock);
3259
3260 if (resp_len)
3261 *resp_len += sizeof(struct opa_hfi1_cong_log);
3262
3263 return reply((struct ib_mad_hdr *)smp);
3264 }
3265
3266 static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3267 struct ib_device *ibdev, u8 port,
3268 u32 *resp_len)
3269 {
3270 struct ib_cc_table_attr *cc_table_attr =
3271 (struct ib_cc_table_attr *) data;
3272 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3273 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3274 u32 start_block = OPA_AM_START_BLK(am);
3275 u32 n_blocks = OPA_AM_NBLK(am);
3276 struct ib_cc_table_entry_shadow *entries;
3277 int i, j;
3278 u32 sentry, eentry;
3279 struct cc_state *cc_state;
3280
3281 /* sanity check n_blocks, start_block */
3282 if (n_blocks == 0 ||
3283 start_block + n_blocks > ppd->cc_max_table_entries) {
3284 smp->status |= IB_SMP_INVALID_FIELD;
3285 return reply((struct ib_mad_hdr *)smp);
3286 }
3287
3288 rcu_read_lock();
3289
3290 cc_state = get_cc_state(ppd);
3291
3292 if (cc_state == NULL) {
3293 rcu_read_unlock();
3294 return reply((struct ib_mad_hdr *)smp);
3295 }
3296
3297 sentry = start_block * IB_CCT_ENTRIES;
3298 eentry = sentry + (IB_CCT_ENTRIES * n_blocks);
3299
3300 cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit);
3301
3302 entries = cc_state->cct.entries;
3303
3304 /* return n_blocks, though the last block may not be full */
3305 for (j = 0, i = sentry; i < eentry; j++, i++)
3306 cc_table_attr->ccti_entries[j].entry =
3307 cpu_to_be16(entries[i].entry);
3308
3309 rcu_read_unlock();
3310
3311 if (resp_len)
3312 *resp_len += sizeof(u16)*(IB_CCT_ENTRIES * n_blocks + 1);
3313
3314 return reply((struct ib_mad_hdr *)smp);
3315 }
3316
3317 void cc_state_reclaim(struct rcu_head *rcu)
3318 {
3319 struct cc_state *cc_state = container_of(rcu, struct cc_state, rcu);
3320
3321 kfree(cc_state);
3322 }
3323
3324 static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3325 struct ib_device *ibdev, u8 port,
3326 u32 *resp_len)
3327 {
3328 struct ib_cc_table_attr *p = (struct ib_cc_table_attr *) data;
3329 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3330 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3331 u32 start_block = OPA_AM_START_BLK(am);
3332 u32 n_blocks = OPA_AM_NBLK(am);
3333 struct ib_cc_table_entry_shadow *entries;
3334 int i, j;
3335 u32 sentry, eentry;
3336 u16 ccti_limit;
3337 struct cc_state *old_cc_state, *new_cc_state;
3338
3339 /* sanity check n_blocks, start_block */
3340 if (n_blocks == 0 ||
3341 start_block + n_blocks > ppd->cc_max_table_entries) {
3342 smp->status |= IB_SMP_INVALID_FIELD;
3343 return reply((struct ib_mad_hdr *)smp);
3344 }
3345
3346 sentry = start_block * IB_CCT_ENTRIES;
3347 eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) +
3348 (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1;
3349
3350 /* sanity check ccti_limit */
3351 ccti_limit = be16_to_cpu(p->ccti_limit);
3352 if (ccti_limit + 1 > eentry) {
3353 smp->status |= IB_SMP_INVALID_FIELD;
3354 return reply((struct ib_mad_hdr *)smp);
3355 }
3356
3357 new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL);
3358 if (new_cc_state == NULL)
3359 goto getit;
3360
3361 spin_lock(&ppd->cc_state_lock);
3362
3363 old_cc_state = get_cc_state(ppd);
3364
3365 if (old_cc_state == NULL) {
3366 spin_unlock(&ppd->cc_state_lock);
3367 kfree(new_cc_state);
3368 return reply((struct ib_mad_hdr *)smp);
3369 }
3370
3371 *new_cc_state = *old_cc_state;
3372
3373 new_cc_state->cct.ccti_limit = ccti_limit;
3374
3375 entries = ppd->ccti_entries;
3376 ppd->total_cct_entry = ccti_limit + 1;
3377
3378 for (j = 0, i = sentry; i < eentry; j++, i++)
3379 entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry);
3380
3381 memcpy(new_cc_state->cct.entries, entries,
3382 eentry * sizeof(struct ib_cc_table_entry));
3383
3384 new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED;
3385 new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map;
3386 memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries,
3387 OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry));
3388
3389 rcu_assign_pointer(ppd->cc_state, new_cc_state);
3390
3391 spin_unlock(&ppd->cc_state_lock);
3392
3393 call_rcu(&old_cc_state->rcu, cc_state_reclaim);
3394
3395 getit:
3396 return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len);
3397 }
3398
3399 struct opa_led_info {
3400 __be32 rsvd_led_mask;
3401 __be32 rsvd;
3402 };
3403
3404 #define OPA_LED_SHIFT 31
3405 #define OPA_LED_MASK (1 << OPA_LED_SHIFT)
3406
3407 static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3408 struct ib_device *ibdev, u8 port,
3409 u32 *resp_len)
3410 {
3411 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3412 struct opa_led_info *p = (struct opa_led_info *) data;
3413 u32 nport = OPA_AM_NPORT(am);
3414 u64 reg;
3415
3416 if (nport != 1) {
3417 smp->status |= IB_SMP_INVALID_FIELD;
3418 return reply((struct ib_mad_hdr *)smp);
3419 }
3420
3421 reg = read_csr(dd, DCC_CFG_LED_CNTRL);
3422 if ((reg & DCC_CFG_LED_CNTRL_LED_CNTRL_SMASK) &&
3423 ((reg & DCC_CFG_LED_CNTRL_LED_SW_BLINK_RATE_SMASK) == 0xf))
3424 p->rsvd_led_mask = cpu_to_be32(OPA_LED_MASK);
3425
3426 if (resp_len)
3427 *resp_len += sizeof(struct opa_led_info);
3428
3429 return reply((struct ib_mad_hdr *)smp);
3430 }
3431
3432 static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3433 struct ib_device *ibdev, u8 port,
3434 u32 *resp_len)
3435 {
3436 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3437 struct opa_led_info *p = (struct opa_led_info *) data;
3438 u32 nport = OPA_AM_NPORT(am);
3439 int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK);
3440
3441 if (nport != 1) {
3442 smp->status |= IB_SMP_INVALID_FIELD;
3443 return reply((struct ib_mad_hdr *)smp);
3444 }
3445
3446 setextled(dd, on);
3447
3448 return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len);
3449 }
3450
3451 static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3452 u8 *data, struct ib_device *ibdev, u8 port,
3453 u32 *resp_len)
3454 {
3455 int ret;
3456 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3457
3458 switch (attr_id) {
3459 case IB_SMP_ATTR_NODE_DESC:
3460 ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port,
3461 resp_len);
3462 break;
3463 case IB_SMP_ATTR_NODE_INFO:
3464 ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port,
3465 resp_len);
3466 break;
3467 case IB_SMP_ATTR_PORT_INFO:
3468 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port,
3469 resp_len);
3470 break;
3471 case IB_SMP_ATTR_PKEY_TABLE:
3472 ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port,
3473 resp_len);
3474 break;
3475 case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3476 ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port,
3477 resp_len);
3478 break;
3479 case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3480 ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port,
3481 resp_len);
3482 break;
3483 case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3484 ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port,
3485 resp_len);
3486 break;
3487 case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3488 ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3489 resp_len);
3490 break;
3491 case OPA_ATTRIB_ID_PORT_STATE_INFO:
3492 ret = __subn_get_opa_psi(smp, am, data, ibdev, port,
3493 resp_len);
3494 break;
3495 case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3496 ret = __subn_get_opa_bct(smp, am, data, ibdev, port,
3497 resp_len);
3498 break;
3499 case OPA_ATTRIB_ID_CABLE_INFO:
3500 ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port,
3501 resp_len);
3502 break;
3503 case IB_SMP_ATTR_VL_ARB_TABLE:
3504 ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port,
3505 resp_len);
3506 break;
3507 case OPA_ATTRIB_ID_CONGESTION_INFO:
3508 ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port,
3509 resp_len);
3510 break;
3511 case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3512 ret = __subn_get_opa_cong_setting(smp, am, data, ibdev,
3513 port, resp_len);
3514 break;
3515 case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
3516 ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev,
3517 port, resp_len);
3518 break;
3519 case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3520 ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port,
3521 resp_len);
3522 break;
3523 case IB_SMP_ATTR_LED_INFO:
3524 ret = __subn_get_opa_led_info(smp, am, data, ibdev, port,
3525 resp_len);
3526 break;
3527 case IB_SMP_ATTR_SM_INFO:
3528 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED)
3529 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3530 if (ibp->port_cap_flags & IB_PORT_SM)
3531 return IB_MAD_RESULT_SUCCESS;
3532 /* FALLTHROUGH */
3533 default:
3534 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3535 ret = reply((struct ib_mad_hdr *)smp);
3536 break;
3537 }
3538 return ret;
3539 }
3540
3541 static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3542 u8 *data, struct ib_device *ibdev, u8 port,
3543 u32 *resp_len)
3544 {
3545 int ret;
3546 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3547
3548 switch (attr_id) {
3549 case IB_SMP_ATTR_PORT_INFO:
3550 ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port,
3551 resp_len);
3552 break;
3553 case IB_SMP_ATTR_PKEY_TABLE:
3554 ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port,
3555 resp_len);
3556 break;
3557 case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3558 ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port,
3559 resp_len);
3560 break;
3561 case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3562 ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port,
3563 resp_len);
3564 break;
3565 case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3566 ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port,
3567 resp_len);
3568 break;
3569 case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3570 ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3571 resp_len);
3572 break;
3573 case OPA_ATTRIB_ID_PORT_STATE_INFO:
3574 ret = __subn_set_opa_psi(smp, am, data, ibdev, port,
3575 resp_len);
3576 break;
3577 case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3578 ret = __subn_set_opa_bct(smp, am, data, ibdev, port,
3579 resp_len);
3580 break;
3581 case IB_SMP_ATTR_VL_ARB_TABLE:
3582 ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port,
3583 resp_len);
3584 break;
3585 case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3586 ret = __subn_set_opa_cong_setting(smp, am, data, ibdev,
3587 port, resp_len);
3588 break;
3589 case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3590 ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port,
3591 resp_len);
3592 break;
3593 case IB_SMP_ATTR_LED_INFO:
3594 ret = __subn_set_opa_led_info(smp, am, data, ibdev, port,
3595 resp_len);
3596 break;
3597 case IB_SMP_ATTR_SM_INFO:
3598 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED)
3599 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3600 if (ibp->port_cap_flags & IB_PORT_SM)
3601 return IB_MAD_RESULT_SUCCESS;
3602 /* FALLTHROUGH */
3603 default:
3604 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3605 ret = reply((struct ib_mad_hdr *)smp);
3606 break;
3607 }
3608 return ret;
3609 }
3610
3611 static inline void set_aggr_error(struct opa_aggregate *ag)
3612 {
3613 ag->err_reqlength |= cpu_to_be16(0x8000);
3614 }
3615
3616 static int subn_get_opa_aggregate(struct opa_smp *smp,
3617 struct ib_device *ibdev, u8 port,
3618 u32 *resp_len)
3619 {
3620 int i;
3621 u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3622 u8 *next_smp = opa_get_smp_data(smp);
3623
3624 if (num_attr < 1 || num_attr > 117) {
3625 smp->status |= IB_SMP_INVALID_FIELD;
3626 return reply((struct ib_mad_hdr *)smp);
3627 }
3628
3629 for (i = 0; i < num_attr; i++) {
3630 struct opa_aggregate *agg;
3631 size_t agg_data_len;
3632 size_t agg_size;
3633 u32 am;
3634
3635 agg = (struct opa_aggregate *)next_smp;
3636 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3637 agg_size = sizeof(*agg) + agg_data_len;
3638 am = be32_to_cpu(agg->attr_mod);
3639
3640 *resp_len += agg_size;
3641
3642 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3643 smp->status |= IB_SMP_INVALID_FIELD;
3644 return reply((struct ib_mad_hdr *)smp);
3645 }
3646
3647 /* zero the payload for this segment */
3648 memset(next_smp + sizeof(*agg), 0, agg_data_len);
3649
3650 (void) subn_get_opa_sma(agg->attr_id, smp, am, agg->data,
3651 ibdev, port, NULL);
3652 if (smp->status & ~IB_SMP_DIRECTION) {
3653 set_aggr_error(agg);
3654 return reply((struct ib_mad_hdr *)smp);
3655 }
3656 next_smp += agg_size;
3657
3658 }
3659
3660 return reply((struct ib_mad_hdr *)smp);
3661 }
3662
3663 static int subn_set_opa_aggregate(struct opa_smp *smp,
3664 struct ib_device *ibdev, u8 port,
3665 u32 *resp_len)
3666 {
3667 int i;
3668 u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3669 u8 *next_smp = opa_get_smp_data(smp);
3670
3671 if (num_attr < 1 || num_attr > 117) {
3672 smp->status |= IB_SMP_INVALID_FIELD;
3673 return reply((struct ib_mad_hdr *)smp);
3674 }
3675
3676 for (i = 0; i < num_attr; i++) {
3677 struct opa_aggregate *agg;
3678 size_t agg_data_len;
3679 size_t agg_size;
3680 u32 am;
3681
3682 agg = (struct opa_aggregate *)next_smp;
3683 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3684 agg_size = sizeof(*agg) + agg_data_len;
3685 am = be32_to_cpu(agg->attr_mod);
3686
3687 *resp_len += agg_size;
3688
3689 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3690 smp->status |= IB_SMP_INVALID_FIELD;
3691 return reply((struct ib_mad_hdr *)smp);
3692 }
3693
3694 (void) subn_set_opa_sma(agg->attr_id, smp, am, agg->data,
3695 ibdev, port, NULL);
3696 if (smp->status & ~IB_SMP_DIRECTION) {
3697 set_aggr_error(agg);
3698 return reply((struct ib_mad_hdr *)smp);
3699 }
3700 next_smp += agg_size;
3701
3702 }
3703
3704 return reply((struct ib_mad_hdr *)smp);
3705 }
3706
3707 /*
3708 * OPAv1 specifies that, on the transition to link up, these counters
3709 * are cleared:
3710 * PortRcvErrors [*]
3711 * LinkErrorRecovery
3712 * LocalLinkIntegrityErrors
3713 * ExcessiveBufferOverruns [*]
3714 *
3715 * [*] Error info associated with these counters is retained, but the
3716 * error info status is reset to 0.
3717 */
3718 void clear_linkup_counters(struct hfi1_devdata *dd)
3719 {
3720 /* PortRcvErrors */
3721 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3722 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3723 /* LinkErrorRecovery */
3724 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3725 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
3726 /* LocalLinkIntegrityErrors */
3727 write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
3728 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3729 /* ExcessiveBufferOverruns */
3730 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3731 dd->rcv_ovfl_cnt = 0;
3732 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3733 }
3734
3735 /*
3736 * is_local_mad() returns 1 if 'mad' is sent from, and destined to the
3737 * local node, 0 otherwise.
3738 */
3739 static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad,
3740 const struct ib_wc *in_wc)
3741 {
3742 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3743 const struct opa_smp *smp = (const struct opa_smp *)mad;
3744
3745 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
3746 return (smp->hop_cnt == 0 &&
3747 smp->route.dr.dr_slid == OPA_LID_PERMISSIVE &&
3748 smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE);
3749 }
3750
3751 return (in_wc->slid == ppd->lid);
3752 }
3753
3754 /*
3755 * opa_local_smp_check() should only be called on MADs for which
3756 * is_local_mad() returns true. It applies the SMP checks that are
3757 * specific to SMPs which are sent from, and destined to this node.
3758 * opa_local_smp_check() returns 0 if the SMP passes its checks, 1
3759 * otherwise.
3760 *
3761 * SMPs which arrive from other nodes are instead checked by
3762 * opa_smp_check().
3763 */
3764 static int opa_local_smp_check(struct hfi1_ibport *ibp,
3765 const struct ib_wc *in_wc)
3766 {
3767 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3768 u16 slid = in_wc->slid;
3769 u16 pkey;
3770
3771 if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))
3772 return 1;
3773
3774 pkey = ppd->pkeys[in_wc->pkey_index];
3775 /*
3776 * We need to do the "node-local" checks specified in OPAv1,
3777 * rev 0.90, section 9.10.26, which are:
3778 * - pkey is 0x7fff, or 0xffff
3779 * - Source QPN == 0 || Destination QPN == 0
3780 * - the MAD header's management class is either
3781 * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or
3782 * IB_MGMT_CLASS_SUBN_LID_ROUTED
3783 * - SLID != 0
3784 *
3785 * However, we know (and so don't need to check again) that,
3786 * for local SMPs, the MAD stack passes MADs with:
3787 * - Source QPN of 0
3788 * - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
3789 * - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or
3790 * our own port's lid
3791 *
3792 */
3793 if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY)
3794 return 0;
3795 ingress_pkey_table_fail(ppd, pkey, slid);
3796 return 1;
3797 }
3798
3799 static int process_subn_opa(struct ib_device *ibdev, int mad_flags,
3800 u8 port, const struct opa_mad *in_mad,
3801 struct opa_mad *out_mad,
3802 u32 *resp_len)
3803 {
3804 struct opa_smp *smp = (struct opa_smp *)out_mad;
3805 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3806 u8 *data;
3807 u32 am;
3808 __be16 attr_id;
3809 int ret;
3810
3811 *out_mad = *in_mad;
3812 data = opa_get_smp_data(smp);
3813
3814 am = be32_to_cpu(smp->attr_mod);
3815 attr_id = smp->attr_id;
3816 if (smp->class_version != OPA_SMI_CLASS_VERSION) {
3817 smp->status |= IB_SMP_UNSUP_VERSION;
3818 ret = reply((struct ib_mad_hdr *)smp);
3819 goto bail;
3820 }
3821 ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey,
3822 smp->route.dr.dr_slid, smp->route.dr.return_path,
3823 smp->hop_cnt);
3824 if (ret) {
3825 u32 port_num = be32_to_cpu(smp->attr_mod);
3826
3827 /*
3828 * If this is a get/set portinfo, we already check the
3829 * M_Key if the MAD is for another port and the M_Key
3830 * is OK on the receiving port. This check is needed
3831 * to increment the error counters when the M_Key
3832 * fails to match on *both* ports.
3833 */
3834 if (attr_id == IB_SMP_ATTR_PORT_INFO &&
3835 (smp->method == IB_MGMT_METHOD_GET ||
3836 smp->method == IB_MGMT_METHOD_SET) &&
3837 port_num && port_num <= ibdev->phys_port_cnt &&
3838 port != port_num)
3839 (void) check_mkey(to_iport(ibdev, port_num),
3840 (struct ib_mad_hdr *)smp, 0,
3841 smp->mkey, smp->route.dr.dr_slid,
3842 smp->route.dr.return_path,
3843 smp->hop_cnt);
3844 ret = IB_MAD_RESULT_FAILURE;
3845 goto bail;
3846 }
3847
3848 *resp_len = opa_get_smp_header_size(smp);
3849
3850 switch (smp->method) {
3851 case IB_MGMT_METHOD_GET:
3852 switch (attr_id) {
3853 default:
3854 clear_opa_smp_data(smp);
3855 ret = subn_get_opa_sma(attr_id, smp, am, data,
3856 ibdev, port, resp_len);
3857 goto bail;
3858 case OPA_ATTRIB_ID_AGGREGATE:
3859 ret = subn_get_opa_aggregate(smp, ibdev, port,
3860 resp_len);
3861 goto bail;
3862 }
3863 case IB_MGMT_METHOD_SET:
3864 switch (attr_id) {
3865 default:
3866 ret = subn_set_opa_sma(attr_id, smp, am, data,
3867 ibdev, port, resp_len);
3868 goto bail;
3869 case OPA_ATTRIB_ID_AGGREGATE:
3870 ret = subn_set_opa_aggregate(smp, ibdev, port,
3871 resp_len);
3872 goto bail;
3873 }
3874 case IB_MGMT_METHOD_TRAP:
3875 case IB_MGMT_METHOD_REPORT:
3876 case IB_MGMT_METHOD_REPORT_RESP:
3877 case IB_MGMT_METHOD_GET_RESP:
3878 /*
3879 * The ib_mad module will call us to process responses
3880 * before checking for other consumers.
3881 * Just tell the caller to process it normally.
3882 */
3883 ret = IB_MAD_RESULT_SUCCESS;
3884 goto bail;
3885 default:
3886 smp->status |= IB_SMP_UNSUP_METHOD;
3887 ret = reply((struct ib_mad_hdr *)smp);
3888 }
3889
3890 bail:
3891 return ret;
3892 }
3893
3894 static int process_subn(struct ib_device *ibdev, int mad_flags,
3895 u8 port, const struct ib_mad *in_mad,
3896 struct ib_mad *out_mad)
3897 {
3898 struct ib_smp *smp = (struct ib_smp *)out_mad;
3899 struct hfi1_ibport *ibp = to_iport(ibdev, port);
3900 int ret;
3901
3902 *out_mad = *in_mad;
3903 if (smp->class_version != 1) {
3904 smp->status |= IB_SMP_UNSUP_VERSION;
3905 ret = reply((struct ib_mad_hdr *)smp);
3906 goto bail;
3907 }
3908
3909 ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags,
3910 smp->mkey, (__force __be32)smp->dr_slid,
3911 smp->return_path, smp->hop_cnt);
3912 if (ret) {
3913 u32 port_num = be32_to_cpu(smp->attr_mod);
3914
3915 /*
3916 * If this is a get/set portinfo, we already check the
3917 * M_Key if the MAD is for another port and the M_Key
3918 * is OK on the receiving port. This check is needed
3919 * to increment the error counters when the M_Key
3920 * fails to match on *both* ports.
3921 */
3922 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
3923 (smp->method == IB_MGMT_METHOD_GET ||
3924 smp->method == IB_MGMT_METHOD_SET) &&
3925 port_num && port_num <= ibdev->phys_port_cnt &&
3926 port != port_num)
3927 (void) check_mkey(to_iport(ibdev, port_num),
3928 (struct ib_mad_hdr *)smp, 0,
3929 smp->mkey,
3930 (__force __be32)smp->dr_slid,
3931 smp->return_path, smp->hop_cnt);
3932 ret = IB_MAD_RESULT_FAILURE;
3933 goto bail;
3934 }
3935
3936 switch (smp->method) {
3937 case IB_MGMT_METHOD_GET:
3938 switch (smp->attr_id) {
3939 case IB_SMP_ATTR_NODE_INFO:
3940 ret = subn_get_nodeinfo(smp, ibdev, port);
3941 goto bail;
3942 default:
3943 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3944 ret = reply((struct ib_mad_hdr *)smp);
3945 goto bail;
3946 }
3947 }
3948
3949 bail:
3950 return ret;
3951 }
3952
3953 static int process_perf_opa(struct ib_device *ibdev, u8 port,
3954 const struct opa_mad *in_mad,
3955 struct opa_mad *out_mad, u32 *resp_len)
3956 {
3957 struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad;
3958 int ret;
3959
3960 *out_mad = *in_mad;
3961
3962 if (pmp->mad_hdr.class_version != OPA_SMI_CLASS_VERSION) {
3963 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
3964 return reply((struct ib_mad_hdr *)pmp);
3965 }
3966
3967 *resp_len = sizeof(pmp->mad_hdr);
3968
3969 switch (pmp->mad_hdr.method) {
3970 case IB_MGMT_METHOD_GET:
3971 switch (pmp->mad_hdr.attr_id) {
3972 case IB_PMA_CLASS_PORT_INFO:
3973 ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len);
3974 goto bail;
3975 case OPA_PM_ATTRIB_ID_PORT_STATUS:
3976 ret = pma_get_opa_portstatus(pmp, ibdev, port,
3977 resp_len);
3978 goto bail;
3979 case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS:
3980 ret = pma_get_opa_datacounters(pmp, ibdev, port,
3981 resp_len);
3982 goto bail;
3983 case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS:
3984 ret = pma_get_opa_porterrors(pmp, ibdev, port,
3985 resp_len);
3986 goto bail;
3987 case OPA_PM_ATTRIB_ID_ERROR_INFO:
3988 ret = pma_get_opa_errorinfo(pmp, ibdev, port,
3989 resp_len);
3990 goto bail;
3991 default:
3992 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
3993 ret = reply((struct ib_mad_hdr *)pmp);
3994 goto bail;
3995 }
3996
3997 case IB_MGMT_METHOD_SET:
3998 switch (pmp->mad_hdr.attr_id) {
3999 case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS:
4000 ret = pma_set_opa_portstatus(pmp, ibdev, port,
4001 resp_len);
4002 goto bail;
4003 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4004 ret = pma_set_opa_errorinfo(pmp, ibdev, port,
4005 resp_len);
4006 goto bail;
4007 default:
4008 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4009 ret = reply((struct ib_mad_hdr *)pmp);
4010 goto bail;
4011 }
4012
4013 case IB_MGMT_METHOD_TRAP:
4014 case IB_MGMT_METHOD_GET_RESP:
4015 /*
4016 * The ib_mad module will call us to process responses
4017 * before checking for other consumers.
4018 * Just tell the caller to process it normally.
4019 */
4020 ret = IB_MAD_RESULT_SUCCESS;
4021 goto bail;
4022
4023 default:
4024 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4025 ret = reply((struct ib_mad_hdr *)pmp);
4026 }
4027
4028 bail:
4029 return ret;
4030 }
4031
4032 static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags,
4033 u8 port, const struct ib_wc *in_wc,
4034 const struct ib_grh *in_grh,
4035 const struct opa_mad *in_mad,
4036 struct opa_mad *out_mad, size_t *out_mad_size,
4037 u16 *out_mad_pkey_index)
4038 {
4039 int ret;
4040 int pkey_idx;
4041 u32 resp_len = 0;
4042 struct hfi1_ibport *ibp = to_iport(ibdev, port);
4043
4044 pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
4045 if (pkey_idx < 0) {
4046 pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
4047 hfi1_get_pkey(ibp, 1));
4048 pkey_idx = 1;
4049 }
4050 *out_mad_pkey_index = (u16)pkey_idx;
4051
4052 switch (in_mad->mad_hdr.mgmt_class) {
4053 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4054 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4055 if (is_local_mad(ibp, in_mad, in_wc)) {
4056 ret = opa_local_smp_check(ibp, in_wc);
4057 if (ret)
4058 return IB_MAD_RESULT_FAILURE;
4059 }
4060 ret = process_subn_opa(ibdev, mad_flags, port, in_mad,
4061 out_mad, &resp_len);
4062 goto bail;
4063 case IB_MGMT_CLASS_PERF_MGMT:
4064 ret = process_perf_opa(ibdev, port, in_mad, out_mad,
4065 &resp_len);
4066 goto bail;
4067
4068 default:
4069 ret = IB_MAD_RESULT_SUCCESS;
4070 }
4071
4072 bail:
4073 if (ret & IB_MAD_RESULT_REPLY)
4074 *out_mad_size = round_up(resp_len, 8);
4075 else if (ret & IB_MAD_RESULT_SUCCESS)
4076 *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh);
4077
4078 return ret;
4079 }
4080
4081 static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4082 const struct ib_wc *in_wc,
4083 const struct ib_grh *in_grh,
4084 const struct ib_mad *in_mad,
4085 struct ib_mad *out_mad)
4086 {
4087 int ret;
4088
4089 switch (in_mad->mad_hdr.mgmt_class) {
4090 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4091 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4092 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
4093 goto bail;
4094 default:
4095 ret = IB_MAD_RESULT_SUCCESS;
4096 }
4097
4098 bail:
4099 return ret;
4100 }
4101
4102 /**
4103 * hfi1_process_mad - process an incoming MAD packet
4104 * @ibdev: the infiniband device this packet came in on
4105 * @mad_flags: MAD flags
4106 * @port: the port number this packet came in on
4107 * @in_wc: the work completion entry for this packet
4108 * @in_grh: the global route header for this packet
4109 * @in_mad: the incoming MAD
4110 * @out_mad: any outgoing MAD reply
4111 *
4112 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
4113 * interested in processing.
4114 *
4115 * Note that the verbs framework has already done the MAD sanity checks,
4116 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4117 * MADs.
4118 *
4119 * This is called by the ib_mad module.
4120 */
4121 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4122 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4123 const struct ib_mad_hdr *in_mad, size_t in_mad_size,
4124 struct ib_mad_hdr *out_mad, size_t *out_mad_size,
4125 u16 *out_mad_pkey_index)
4126 {
4127 switch (in_mad->base_version) {
4128 case OPA_MGMT_BASE_VERSION:
4129 if (unlikely(in_mad_size != sizeof(struct opa_mad))) {
4130 dev_err(ibdev->dma_device, "invalid in_mad_size\n");
4131 return IB_MAD_RESULT_FAILURE;
4132 }
4133 return hfi1_process_opa_mad(ibdev, mad_flags, port,
4134 in_wc, in_grh,
4135 (struct opa_mad *)in_mad,
4136 (struct opa_mad *)out_mad,
4137 out_mad_size,
4138 out_mad_pkey_index);
4139 case IB_MGMT_BASE_VERSION:
4140 return hfi1_process_ib_mad(ibdev, mad_flags, port,
4141 in_wc, in_grh,
4142 (const struct ib_mad *)in_mad,
4143 (struct ib_mad *)out_mad);
4144 default:
4145 break;
4146 }
4147
4148 return IB_MAD_RESULT_FAILURE;
4149 }
4150
4151 static void send_handler(struct ib_mad_agent *agent,
4152 struct ib_mad_send_wc *mad_send_wc)
4153 {
4154 ib_free_send_mad(mad_send_wc->send_buf);
4155 }
4156
4157 int hfi1_create_agents(struct hfi1_ibdev *dev)
4158 {
4159 struct hfi1_devdata *dd = dd_from_dev(dev);
4160 struct ib_mad_agent *agent;
4161 struct hfi1_ibport *ibp;
4162 int p;
4163 int ret;
4164
4165 for (p = 0; p < dd->num_pports; p++) {
4166 ibp = &dd->pport[p].ibport_data;
4167 agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI,
4168 NULL, 0, send_handler,
4169 NULL, NULL, 0);
4170 if (IS_ERR(agent)) {
4171 ret = PTR_ERR(agent);
4172 goto err;
4173 }
4174
4175 ibp->send_agent = agent;
4176 }
4177
4178 return 0;
4179
4180 err:
4181 for (p = 0; p < dd->num_pports; p++) {
4182 ibp = &dd->pport[p].ibport_data;
4183 if (ibp->send_agent) {
4184 agent = ibp->send_agent;
4185 ibp->send_agent = NULL;
4186 ib_unregister_mad_agent(agent);
4187 }
4188 }
4189
4190 return ret;
4191 }
4192
4193 void hfi1_free_agents(struct hfi1_ibdev *dev)
4194 {
4195 struct hfi1_devdata *dd = dd_from_dev(dev);
4196 struct ib_mad_agent *agent;
4197 struct hfi1_ibport *ibp;
4198 int p;
4199
4200 for (p = 0; p < dd->num_pports; p++) {
4201 ibp = &dd->pport[p].ibport_data;
4202 if (ibp->send_agent) {
4203 agent = ibp->send_agent;
4204 ibp->send_agent = NULL;
4205 ib_unregister_mad_agent(agent);
4206 }
4207 if (ibp->sm_ah) {
4208 ib_destroy_ah(&ibp->sm_ah->ibah);
4209 ibp->sm_ah = NULL;
4210 }
4211 }
4212 }
Linux kernel - Deliverables
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