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Linux 3.4.102
[linux/fpc-iii.git] / drivers / infiniband / hw / qib / qib_mad.c
blob14f39298cb97de46d2168b7e06511418ae46218b
1 /*
2 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
3 * All rights reserved.
4 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35 #include <rdma/ib_smi.h>
36
37 #include "qib.h"
38 #include "qib_mad.h"
39
40 static int reply(struct ib_smp *smp)
41 {
42 /*
43 * The verbs framework will handle the directed/LID route
44 * packet changes.
45 */
46 smp->method = IB_MGMT_METHOD_GET_RESP;
47 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
48 smp->status |= IB_SMP_DIRECTION;
49 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
50 }
51
52 static void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len)
53 {
54 struct ib_mad_send_buf *send_buf;
55 struct ib_mad_agent *agent;
56 struct ib_smp *smp;
57 int ret;
58 unsigned long flags;
59 unsigned long timeout;
60
61 agent = ibp->send_agent;
62 if (!agent)
63 return;
64
65 /* o14-3.2.1 */
66 if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE))
67 return;
68
69 /* o14-2 */
70 if (ibp->trap_timeout && time_before(jiffies, ibp->trap_timeout))
71 return;
72
73 send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
74 IB_MGMT_MAD_DATA, GFP_ATOMIC);
75 if (IS_ERR(send_buf))
76 return;
77
78 smp = send_buf->mad;
79 smp->base_version = IB_MGMT_BASE_VERSION;
80 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
81 smp->class_version = 1;
82 smp->method = IB_MGMT_METHOD_TRAP;
83 ibp->tid++;
84 smp->tid = cpu_to_be64(ibp->tid);
85 smp->attr_id = IB_SMP_ATTR_NOTICE;
86 /* o14-1: smp->mkey = 0; */
87 memcpy(smp->data, data, len);
88
89 spin_lock_irqsave(&ibp->lock, flags);
90 if (!ibp->sm_ah) {
91 if (ibp->sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
92 struct ib_ah *ah;
93 struct ib_ah_attr attr;
94
95 memset(&attr, 0, sizeof attr);
96 attr.dlid = ibp->sm_lid;
97 attr.port_num = ppd_from_ibp(ibp)->port;
98 ah = ib_create_ah(ibp->qp0->ibqp.pd, &attr);
99 if (IS_ERR(ah))
100 ret = -EINVAL;
101 else {
102 send_buf->ah = ah;
103 ibp->sm_ah = to_iah(ah);
104 ret = 0;
105 }
106 } else
107 ret = -EINVAL;
108 } else {
109 send_buf->ah = &ibp->sm_ah->ibah;
110 ret = 0;
111 }
112 spin_unlock_irqrestore(&ibp->lock, flags);
113
114 if (!ret)
115 ret = ib_post_send_mad(send_buf, NULL);
116 if (!ret) {
117 /* 4.096 usec. */
118 timeout = (4096 * (1UL << ibp->subnet_timeout)) / 1000;
119 ibp->trap_timeout = jiffies + usecs_to_jiffies(timeout);
120 } else {
121 ib_free_send_mad(send_buf);
122 ibp->trap_timeout = 0;
123 }
124 }
125
126 /*
127 * Send a bad [PQ]_Key trap (ch. 14.3.8).
128 */
129 void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
130 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
131 {
132 struct ib_mad_notice_attr data;
133
134 if (trap_num == IB_NOTICE_TRAP_BAD_PKEY)
135 ibp->pkey_violations++;
136 else
137 ibp->qkey_violations++;
138 ibp->n_pkt_drops++;
139
140 /* Send violation trap */
141 data.generic_type = IB_NOTICE_TYPE_SECURITY;
142 data.prod_type_msb = 0;
143 data.prod_type_lsb = IB_NOTICE_PROD_CA;
144 data.trap_num = trap_num;
145 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
146 data.toggle_count = 0;
147 memset(&data.details, 0, sizeof data.details);
148 data.details.ntc_257_258.lid1 = lid1;
149 data.details.ntc_257_258.lid2 = lid2;
150 data.details.ntc_257_258.key = cpu_to_be32(key);
151 data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1);
152 data.details.ntc_257_258.qp2 = cpu_to_be32(qp2);
153
154 qib_send_trap(ibp, &data, sizeof data);
155 }
156
157 /*
158 * Send a bad M_Key trap (ch. 14.3.9).
159 */
160 static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp)
161 {
162 struct ib_mad_notice_attr data;
163
164 /* Send violation trap */
165 data.generic_type = IB_NOTICE_TYPE_SECURITY;
166 data.prod_type_msb = 0;
167 data.prod_type_lsb = IB_NOTICE_PROD_CA;
168 data.trap_num = IB_NOTICE_TRAP_BAD_MKEY;
169 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
170 data.toggle_count = 0;
171 memset(&data.details, 0, sizeof data.details);
172 data.details.ntc_256.lid = data.issuer_lid;
173 data.details.ntc_256.method = smp->method;
174 data.details.ntc_256.attr_id = smp->attr_id;
175 data.details.ntc_256.attr_mod = smp->attr_mod;
176 data.details.ntc_256.mkey = smp->mkey;
177 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
178 u8 hop_cnt;
179
180 data.details.ntc_256.dr_slid = smp->dr_slid;
181 data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
182 hop_cnt = smp->hop_cnt;
183 if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) {
184 data.details.ntc_256.dr_trunc_hop |=
185 IB_NOTICE_TRAP_DR_TRUNC;
186 hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path);
187 }
188 data.details.ntc_256.dr_trunc_hop |= hop_cnt;
189 memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path,
190 hop_cnt);
191 }
192
193 qib_send_trap(ibp, &data, sizeof data);
194 }
195
196 /*
197 * Send a Port Capability Mask Changed trap (ch. 14.3.11).
198 */
199 void qib_cap_mask_chg(struct qib_ibport *ibp)
200 {
201 struct ib_mad_notice_attr data;
202
203 data.generic_type = IB_NOTICE_TYPE_INFO;
204 data.prod_type_msb = 0;
205 data.prod_type_lsb = IB_NOTICE_PROD_CA;
206 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG;
207 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
208 data.toggle_count = 0;
209 memset(&data.details, 0, sizeof data.details);
210 data.details.ntc_144.lid = data.issuer_lid;
211 data.details.ntc_144.new_cap_mask = cpu_to_be32(ibp->port_cap_flags);
212
213 qib_send_trap(ibp, &data, sizeof data);
214 }
215
216 /*
217 * Send a System Image GUID Changed trap (ch. 14.3.12).
218 */
219 void qib_sys_guid_chg(struct qib_ibport *ibp)
220 {
221 struct ib_mad_notice_attr data;
222
223 data.generic_type = IB_NOTICE_TYPE_INFO;
224 data.prod_type_msb = 0;
225 data.prod_type_lsb = IB_NOTICE_PROD_CA;
226 data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG;
227 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
228 data.toggle_count = 0;
229 memset(&data.details, 0, sizeof data.details);
230 data.details.ntc_145.lid = data.issuer_lid;
231 data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid;
232
233 qib_send_trap(ibp, &data, sizeof data);
234 }
235
236 /*
237 * Send a Node Description Changed trap (ch. 14.3.13).
238 */
239 void qib_node_desc_chg(struct qib_ibport *ibp)
240 {
241 struct ib_mad_notice_attr data;
242
243 data.generic_type = IB_NOTICE_TYPE_INFO;
244 data.prod_type_msb = 0;
245 data.prod_type_lsb = IB_NOTICE_PROD_CA;
246 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG;
247 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
248 data.toggle_count = 0;
249 memset(&data.details, 0, sizeof data.details);
250 data.details.ntc_144.lid = data.issuer_lid;
251 data.details.ntc_144.local_changes = 1;
252 data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG;
253
254 qib_send_trap(ibp, &data, sizeof data);
255 }
256
257 static int subn_get_nodedescription(struct ib_smp *smp,
258 struct ib_device *ibdev)
259 {
260 if (smp->attr_mod)
261 smp->status |= IB_SMP_INVALID_FIELD;
262
263 memcpy(smp->data, ibdev->node_desc, sizeof(smp->data));
264
265 return reply(smp);
266 }
267
268 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
269 u8 port)
270 {
271 struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
272 struct qib_devdata *dd = dd_from_ibdev(ibdev);
273 u32 vendor, majrev, minrev;
274 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
275
276 /* GUID 0 is illegal */
277 if (smp->attr_mod || pidx >= dd->num_pports ||
278 dd->pport[pidx].guid == 0)
279 smp->status |= IB_SMP_INVALID_FIELD;
280 else
281 nip->port_guid = dd->pport[pidx].guid;
282
283 nip->base_version = 1;
284 nip->class_version = 1;
285 nip->node_type = 1; /* channel adapter */
286 nip->num_ports = ibdev->phys_port_cnt;
287 /* This is already in network order */
288 nip->sys_guid = ib_qib_sys_image_guid;
289 nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */
290 nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd));
291 nip->device_id = cpu_to_be16(dd->deviceid);
292 majrev = dd->majrev;
293 minrev = dd->minrev;
294 nip->revision = cpu_to_be32((majrev << 16) | minrev);
295 nip->local_port_num = port;
296 vendor = dd->vendorid;
297 nip->vendor_id[0] = QIB_SRC_OUI_1;
298 nip->vendor_id[1] = QIB_SRC_OUI_2;
299 nip->vendor_id[2] = QIB_SRC_OUI_3;
300
301 return reply(smp);
302 }
303
304 static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
305 u8 port)
306 {
307 struct qib_devdata *dd = dd_from_ibdev(ibdev);
308 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
309 __be64 *p = (__be64 *) smp->data;
310 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
311
312 /* 32 blocks of 8 64-bit GUIDs per block */
313
314 memset(smp->data, 0, sizeof(smp->data));
315
316 if (startgx == 0 && pidx < dd->num_pports) {
317 struct qib_pportdata *ppd = dd->pport + pidx;
318 struct qib_ibport *ibp = &ppd->ibport_data;
319 __be64 g = ppd->guid;
320 unsigned i;
321
322 /* GUID 0 is illegal */
323 if (g == 0)
324 smp->status |= IB_SMP_INVALID_FIELD;
325 else {
326 /* The first is a copy of the read-only HW GUID. */
327 p[0] = g;
328 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
329 p[i] = ibp->guids[i - 1];
330 }
331 } else
332 smp->status |= IB_SMP_INVALID_FIELD;
333
334 return reply(smp);
335 }
336
337 static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w)
338 {
339 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w);
340 }
341
342 static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s)
343 {
344 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s);
345 }
346
347 static int get_overrunthreshold(struct qib_pportdata *ppd)
348 {
349 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH);
350 }
351
352 /**
353 * set_overrunthreshold - set the overrun threshold
354 * @ppd: the physical port data
355 * @n: the new threshold
356 *
357 * Note that this will only take effect when the link state changes.
358 */
359 static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n)
360 {
361 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH,
362 (u32)n);
363 return 0;
364 }
365
366 static int get_phyerrthreshold(struct qib_pportdata *ppd)
367 {
368 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH);
369 }
370
371 /**
372 * set_phyerrthreshold - set the physical error threshold
373 * @ppd: the physical port data
374 * @n: the new threshold
375 *
376 * Note that this will only take effect when the link state changes.
377 */
378 static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n)
379 {
380 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH,
381 (u32)n);
382 return 0;
383 }
384
385 /**
386 * get_linkdowndefaultstate - get the default linkdown state
387 * @ppd: the physical port data
388 *
389 * Returns zero if the default is POLL, 1 if the default is SLEEP.
390 */
391 static int get_linkdowndefaultstate(struct qib_pportdata *ppd)
392 {
393 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) ==
394 IB_LINKINITCMD_SLEEP;
395 }
396
397 static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags)
398 {
399 int ret = 0;
400
401 /* Is the mkey in the process of expiring? */
402 if (ibp->mkey_lease_timeout &&
403 time_after_eq(jiffies, ibp->mkey_lease_timeout)) {
404 /* Clear timeout and mkey protection field. */
405 ibp->mkey_lease_timeout = 0;
406 ibp->mkeyprot = 0;
407 }
408
409 /* M_Key checking depends on Portinfo:M_Key_protect_bits */
410 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && ibp->mkey != 0 &&
411 ibp->mkey != smp->mkey &&
412 (smp->method == IB_MGMT_METHOD_SET ||
413 smp->method == IB_MGMT_METHOD_TRAP_REPRESS ||
414 (smp->method == IB_MGMT_METHOD_GET && ibp->mkeyprot >= 2))) {
415 if (ibp->mkey_violations != 0xFFFF)
416 ++ibp->mkey_violations;
417 if (!ibp->mkey_lease_timeout && ibp->mkey_lease_period)
418 ibp->mkey_lease_timeout = jiffies +
419 ibp->mkey_lease_period * HZ;
420 /* Generate a trap notice. */
421 qib_bad_mkey(ibp, smp);
422 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
423 } else if (ibp->mkey_lease_timeout)
424 ibp->mkey_lease_timeout = 0;
425
426 return ret;
427 }
428
429 static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
430 u8 port)
431 {
432 struct qib_devdata *dd;
433 struct qib_pportdata *ppd;
434 struct qib_ibport *ibp;
435 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
436 u8 mtu;
437 int ret;
438 u32 state;
439 u32 port_num = be32_to_cpu(smp->attr_mod);
440
441 if (port_num == 0)
442 port_num = port;
443 else {
444 if (port_num > ibdev->phys_port_cnt) {
445 smp->status |= IB_SMP_INVALID_FIELD;
446 ret = reply(smp);
447 goto bail;
448 }
449 if (port_num != port) {
450 ibp = to_iport(ibdev, port_num);
451 ret = check_mkey(ibp, smp, 0);
452 if (ret)
453 goto bail;
454 }
455 }
456
457 dd = dd_from_ibdev(ibdev);
458 /* IB numbers ports from 1, hdw from 0 */
459 ppd = dd->pport + (port_num - 1);
460 ibp = &ppd->ibport_data;
461
462 /* Clear all fields. Only set the non-zero fields. */
463 memset(smp->data, 0, sizeof(smp->data));
464
465 /* Only return the mkey if the protection field allows it. */
466 if (!(smp->method == IB_MGMT_METHOD_GET &&
467 ibp->mkey != smp->mkey &&
468 ibp->mkeyprot == 1))
469 pip->mkey = ibp->mkey;
470 pip->gid_prefix = ibp->gid_prefix;
471 pip->lid = cpu_to_be16(ppd->lid);
472 pip->sm_lid = cpu_to_be16(ibp->sm_lid);
473 pip->cap_mask = cpu_to_be32(ibp->port_cap_flags);
474 /* pip->diag_code; */
475 pip->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period);
476 pip->local_port_num = port;
477 pip->link_width_enabled = ppd->link_width_enabled;
478 pip->link_width_supported = ppd->link_width_supported;
479 pip->link_width_active = ppd->link_width_active;
480 state = dd->f_iblink_state(ppd->lastibcstat);
481 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state;
482
483 pip->portphysstate_linkdown =
484 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) |
485 (get_linkdowndefaultstate(ppd) ? 1 : 2);
486 pip->mkeyprot_resv_lmc = (ibp->mkeyprot << 6) | ppd->lmc;
487 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) |
488 ppd->link_speed_enabled;
489 switch (ppd->ibmtu) {
490 default: /* something is wrong; fall through */
491 case 4096:
492 mtu = IB_MTU_4096;
493 break;
494 case 2048:
495 mtu = IB_MTU_2048;
496 break;
497 case 1024:
498 mtu = IB_MTU_1024;
499 break;
500 case 512:
501 mtu = IB_MTU_512;
502 break;
503 case 256:
504 mtu = IB_MTU_256;
505 break;
506 }
507 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->sm_sl;
508 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
509 pip->vl_high_limit = ibp->vl_high_limit;
510 pip->vl_arb_high_cap =
511 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP);
512 pip->vl_arb_low_cap =
513 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP);
514 /* InitTypeReply = 0 */
515 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096;
516 /* HCAs ignore VLStallCount and HOQLife */
517 /* pip->vlstallcnt_hoqlife; */
518 pip->operationalvl_pei_peo_fpi_fpo =
519 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4;
520 pip->mkey_violations = cpu_to_be16(ibp->mkey_violations);
521 /* P_KeyViolations are counted by hardware. */
522 pip->pkey_violations = cpu_to_be16(ibp->pkey_violations);
523 pip->qkey_violations = cpu_to_be16(ibp->qkey_violations);
524 /* Only the hardware GUID is supported for now */
525 pip->guid_cap = QIB_GUIDS_PER_PORT;
526 pip->clientrereg_resv_subnetto = ibp->subnet_timeout;
527 /* 32.768 usec. response time (guessing) */
528 pip->resv_resptimevalue = 3;
529 pip->localphyerrors_overrunerrors =
530 (get_phyerrthreshold(ppd) << 4) |
531 get_overrunthreshold(ppd);
532 /* pip->max_credit_hint; */
533 if (ibp->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) {
534 u32 v;
535
536 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY);
537 pip->link_roundtrip_latency[0] = v >> 16;
538 pip->link_roundtrip_latency[1] = v >> 8;
539 pip->link_roundtrip_latency[2] = v;
540 }
541
542 ret = reply(smp);
543
544 bail:
545 return ret;
546 }
547
548 /**
549 * get_pkeys - return the PKEY table
550 * @dd: the qlogic_ib device
551 * @port: the IB port number
552 * @pkeys: the pkey table is placed here
553 */
554 static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
555 {
556 struct qib_pportdata *ppd = dd->pport + port - 1;
557 /*
558 * always a kernel context, no locking needed.
559 * If we get here with ppd setup, no need to check
560 * that pd is valid.
561 */
562 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx];
563
564 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys));
565
566 return 0;
567 }
568
569 static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
570 u8 port)
571 {
572 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
573 u16 *p = (u16 *) smp->data;
574 __be16 *q = (__be16 *) smp->data;
575
576 /* 64 blocks of 32 16-bit P_Key entries */
577
578 memset(smp->data, 0, sizeof(smp->data));
579 if (startpx == 0) {
580 struct qib_devdata *dd = dd_from_ibdev(ibdev);
581 unsigned i, n = qib_get_npkeys(dd);
582
583 get_pkeys(dd, port, p);
584
585 for (i = 0; i < n; i++)
586 q[i] = cpu_to_be16(p[i]);
587 } else
588 smp->status |= IB_SMP_INVALID_FIELD;
589
590 return reply(smp);
591 }
592
593 static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
594 u8 port)
595 {
596 struct qib_devdata *dd = dd_from_ibdev(ibdev);
597 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
598 __be64 *p = (__be64 *) smp->data;
599 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
600
601 /* 32 blocks of 8 64-bit GUIDs per block */
602
603 if (startgx == 0 && pidx < dd->num_pports) {
604 struct qib_pportdata *ppd = dd->pport + pidx;
605 struct qib_ibport *ibp = &ppd->ibport_data;
606 unsigned i;
607
608 /* The first entry is read-only. */
609 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
610 ibp->guids[i - 1] = p[i];
611 } else
612 smp->status |= IB_SMP_INVALID_FIELD;
613
614 /* The only GUID we support is the first read-only entry. */
615 return subn_get_guidinfo(smp, ibdev, port);
616 }
617
618 /**
619 * subn_set_portinfo - set port information
620 * @smp: the incoming SM packet
621 * @ibdev: the infiniband device
622 * @port: the port on the device
623 *
624 * Set Portinfo (see ch. 14.2.5.6).
625 */
626 static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
627 u8 port)
628 {
629 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
630 struct ib_event event;
631 struct qib_devdata *dd;
632 struct qib_pportdata *ppd;
633 struct qib_ibport *ibp;
634 char clientrereg = 0;
635 unsigned long flags;
636 u16 lid, smlid;
637 u8 lwe;
638 u8 lse;
639 u8 state;
640 u8 vls;
641 u8 msl;
642 u16 lstate;
643 int ret, ore, mtu;
644 u32 port_num = be32_to_cpu(smp->attr_mod);
645
646 if (port_num == 0)
647 port_num = port;
648 else {
649 if (port_num > ibdev->phys_port_cnt)
650 goto err;
651 /* Port attributes can only be set on the receiving port */
652 if (port_num != port)
653 goto get_only;
654 }
655
656 dd = dd_from_ibdev(ibdev);
657 /* IB numbers ports from 1, hdw from 0 */
658 ppd = dd->pport + (port_num - 1);
659 ibp = &ppd->ibport_data;
660 event.device = ibdev;
661 event.element.port_num = port;
662
663 ibp->mkey = pip->mkey;
664 ibp->gid_prefix = pip->gid_prefix;
665 ibp->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
666
667 lid = be16_to_cpu(pip->lid);
668 /* Must be a valid unicast LID address. */
669 if (lid == 0 || lid >= QIB_MULTICAST_LID_BASE)
670 smp->status |= IB_SMP_INVALID_FIELD;
671 else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) {
672 if (ppd->lid != lid)
673 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT);
674 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7))
675 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT);
676 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7);
677 event.event = IB_EVENT_LID_CHANGE;
678 ib_dispatch_event(&event);
679 }
680
681 smlid = be16_to_cpu(pip->sm_lid);
682 msl = pip->neighbormtu_mastersmsl & 0xF;
683 /* Must be a valid unicast LID address. */
684 if (smlid == 0 || smlid >= QIB_MULTICAST_LID_BASE)
685 smp->status |= IB_SMP_INVALID_FIELD;
686 else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) {
687 spin_lock_irqsave(&ibp->lock, flags);
688 if (ibp->sm_ah) {
689 if (smlid != ibp->sm_lid)
690 ibp->sm_ah->attr.dlid = smlid;
691 if (msl != ibp->sm_sl)
692 ibp->sm_ah->attr.sl = msl;
693 }
694 spin_unlock_irqrestore(&ibp->lock, flags);
695 if (smlid != ibp->sm_lid)
696 ibp->sm_lid = smlid;
697 if (msl != ibp->sm_sl)
698 ibp->sm_sl = msl;
699 event.event = IB_EVENT_SM_CHANGE;
700 ib_dispatch_event(&event);
701 }
702
703 /* Allow 1x or 4x to be set (see 14.2.6.6). */
704 lwe = pip->link_width_enabled;
705 if (lwe) {
706 if (lwe == 0xFF)
707 set_link_width_enabled(ppd, ppd->link_width_supported);
708 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported))
709 smp->status |= IB_SMP_INVALID_FIELD;
710 else if (lwe != ppd->link_width_enabled)
711 set_link_width_enabled(ppd, lwe);
712 }
713
714 lse = pip->linkspeedactive_enabled & 0xF;
715 if (lse) {
716 /*
717 * The IB 1.2 spec. only allows link speed values
718 * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific
719 * speeds.
720 */
721 if (lse == 15)
722 set_link_speed_enabled(ppd,
723 ppd->link_speed_supported);
724 else if (lse >= 8 || (lse & ~ppd->link_speed_supported))
725 smp->status |= IB_SMP_INVALID_FIELD;
726 else if (lse != ppd->link_speed_enabled)
727 set_link_speed_enabled(ppd, lse);
728 }
729
730 /* Set link down default state. */
731 switch (pip->portphysstate_linkdown & 0xF) {
732 case 0: /* NOP */
733 break;
734 case 1: /* SLEEP */
735 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
736 IB_LINKINITCMD_SLEEP);
737 break;
738 case 2: /* POLL */
739 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
740 IB_LINKINITCMD_POLL);
741 break;
742 default:
743 smp->status |= IB_SMP_INVALID_FIELD;
744 }
745
746 ibp->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
747 ibp->vl_high_limit = pip->vl_high_limit;
748 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
749 ibp->vl_high_limit);
750
751 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF);
752 if (mtu == -1)
753 smp->status |= IB_SMP_INVALID_FIELD;
754 else
755 qib_set_mtu(ppd, mtu);
756
757 /* Set operational VLs */
758 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF;
759 if (vls) {
760 if (vls > ppd->vls_supported)
761 smp->status |= IB_SMP_INVALID_FIELD;
762 else
763 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls);
764 }
765
766 if (pip->mkey_violations == 0)
767 ibp->mkey_violations = 0;
768
769 if (pip->pkey_violations == 0)
770 ibp->pkey_violations = 0;
771
772 if (pip->qkey_violations == 0)
773 ibp->qkey_violations = 0;
774
775 ore = pip->localphyerrors_overrunerrors;
776 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF))
777 smp->status |= IB_SMP_INVALID_FIELD;
778
779 if (set_overrunthreshold(ppd, (ore & 0xF)))
780 smp->status |= IB_SMP_INVALID_FIELD;
781
782 ibp->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
783
784 if (pip->clientrereg_resv_subnetto & 0x80) {
785 clientrereg = 1;
786 event.event = IB_EVENT_CLIENT_REREGISTER;
787 ib_dispatch_event(&event);
788 }
789
790 /*
791 * Do the port state change now that the other link parameters
792 * have been set.
793 * Changing the port physical state only makes sense if the link
794 * is down or is being set to down.
795 */
796 state = pip->linkspeed_portstate & 0xF;
797 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
798 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
799 smp->status |= IB_SMP_INVALID_FIELD;
800
801 /*
802 * Only state changes of DOWN, ARM, and ACTIVE are valid
803 * and must be in the correct state to take effect (see 7.2.6).
804 */
805 switch (state) {
806 case IB_PORT_NOP:
807 if (lstate == 0)
808 break;
809 /* FALLTHROUGH */
810 case IB_PORT_DOWN:
811 if (lstate == 0)
812 lstate = QIB_IB_LINKDOWN_ONLY;
813 else if (lstate == 1)
814 lstate = QIB_IB_LINKDOWN_SLEEP;
815 else if (lstate == 2)
816 lstate = QIB_IB_LINKDOWN;
817 else if (lstate == 3)
818 lstate = QIB_IB_LINKDOWN_DISABLE;
819 else {
820 smp->status |= IB_SMP_INVALID_FIELD;
821 break;
822 }
823 spin_lock_irqsave(&ppd->lflags_lock, flags);
824 ppd->lflags &= ~QIBL_LINKV;
825 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
826 qib_set_linkstate(ppd, lstate);
827 /*
828 * Don't send a reply if the response would be sent
829 * through the disabled port.
830 */
831 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) {
832 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
833 goto done;
834 }
835 qib_wait_linkstate(ppd, QIBL_LINKV, 10);
836 break;
837 case IB_PORT_ARMED:
838 qib_set_linkstate(ppd, QIB_IB_LINKARM);
839 break;
840 case IB_PORT_ACTIVE:
841 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE);
842 break;
843 default:
844 smp->status |= IB_SMP_INVALID_FIELD;
845 }
846
847 ret = subn_get_portinfo(smp, ibdev, port);
848
849 if (clientrereg)
850 pip->clientrereg_resv_subnetto |= 0x80;
851
852 goto get_only;
853
854 err:
855 smp->status |= IB_SMP_INVALID_FIELD;
856 get_only:
857 ret = subn_get_portinfo(smp, ibdev, port);
858 done:
859 return ret;
860 }
861
862 /**
863 * rm_pkey - decrecment the reference count for the given PKEY
864 * @dd: the qlogic_ib device
865 * @key: the PKEY index
866 *
867 * Return true if this was the last reference and the hardware table entry
868 * needs to be changed.
869 */
870 static int rm_pkey(struct qib_pportdata *ppd, u16 key)
871 {
872 int i;
873 int ret;
874
875 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
876 if (ppd->pkeys[i] != key)
877 continue;
878 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) {
879 ppd->pkeys[i] = 0;
880 ret = 1;
881 goto bail;
882 }
883 break;
884 }
885
886 ret = 0;
887
888 bail:
889 return ret;
890 }
891
892 /**
893 * add_pkey - add the given PKEY to the hardware table
894 * @dd: the qlogic_ib device
895 * @key: the PKEY
896 *
897 * Return an error code if unable to add the entry, zero if no change,
898 * or 1 if the hardware PKEY register needs to be updated.
899 */
900 static int add_pkey(struct qib_pportdata *ppd, u16 key)
901 {
902 int i;
903 u16 lkey = key & 0x7FFF;
904 int any = 0;
905 int ret;
906
907 if (lkey == 0x7FFF) {
908 ret = 0;
909 goto bail;
910 }
911
912 /* Look for an empty slot or a matching PKEY. */
913 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
914 if (!ppd->pkeys[i]) {
915 any++;
916 continue;
917 }
918 /* If it matches exactly, try to increment the ref count */
919 if (ppd->pkeys[i] == key) {
920 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) {
921 ret = 0;
922 goto bail;
923 }
924 /* Lost the race. Look for an empty slot below. */
925 atomic_dec(&ppd->pkeyrefs[i]);
926 any++;
927 }
928 /*
929 * It makes no sense to have both the limited and unlimited
930 * PKEY set at the same time since the unlimited one will
931 * disable the limited one.
932 */
933 if ((ppd->pkeys[i] & 0x7FFF) == lkey) {
934 ret = -EEXIST;
935 goto bail;
936 }
937 }
938 if (!any) {
939 ret = -EBUSY;
940 goto bail;
941 }
942 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
943 if (!ppd->pkeys[i] &&
944 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) {
945 /* for qibstats, etc. */
946 ppd->pkeys[i] = key;
947 ret = 1;
948 goto bail;
949 }
950 }
951 ret = -EBUSY;
952
953 bail:
954 return ret;
955 }
956
957 /**
958 * set_pkeys - set the PKEY table for ctxt 0
959 * @dd: the qlogic_ib device
960 * @port: the IB port number
961 * @pkeys: the PKEY table
962 */
963 static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
964 {
965 struct qib_pportdata *ppd;
966 struct qib_ctxtdata *rcd;
967 int i;
968 int changed = 0;
969
970 /*
971 * IB port one/two always maps to context zero/one,
972 * always a kernel context, no locking needed
973 * If we get here with ppd setup, no need to check
974 * that rcd is valid.
975 */
976 ppd = dd->pport + (port - 1);
977 rcd = dd->rcd[ppd->hw_pidx];
978
979 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) {
980 u16 key = pkeys[i];
981 u16 okey = rcd->pkeys[i];
982
983 if (key == okey)
984 continue;
985 /*
986 * The value of this PKEY table entry is changing.
987 * Remove the old entry in the hardware's array of PKEYs.
988 */
989 if (okey & 0x7FFF)
990 changed |= rm_pkey(ppd, okey);
991 if (key & 0x7FFF) {
992 int ret = add_pkey(ppd, key);
993
994 if (ret < 0)
995 key = 0;
996 else
997 changed |= ret;
998 }
999 rcd->pkeys[i] = key;
1000 }
1001 if (changed) {
1002 struct ib_event event;
1003
1004 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0);
1005
1006 event.event = IB_EVENT_PKEY_CHANGE;
1007 event.device = &dd->verbs_dev.ibdev;
1008 event.element.port_num = port;
1009 ib_dispatch_event(&event);
1010 }
1011 return 0;
1012 }
1013
1014 static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
1015 u8 port)
1016 {
1017 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
1018 __be16 *p = (__be16 *) smp->data;
1019 u16 *q = (u16 *) smp->data;
1020 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1021 unsigned i, n = qib_get_npkeys(dd);
1022
1023 for (i = 0; i < n; i++)
1024 q[i] = be16_to_cpu(p[i]);
1025
1026 if (startpx != 0 || set_pkeys(dd, port, q) != 0)
1027 smp->status |= IB_SMP_INVALID_FIELD;
1028
1029 return subn_get_pkeytable(smp, ibdev, port);
1030 }
1031
1032 static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1033 u8 port)
1034 {
1035 struct qib_ibport *ibp = to_iport(ibdev, port);
1036 u8 *p = (u8 *) smp->data;
1037 unsigned i;
1038
1039 memset(smp->data, 0, sizeof(smp->data));
1040
1041 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP))
1042 smp->status |= IB_SMP_UNSUP_METHOD;
1043 else
1044 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2)
1045 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1];
1046
1047 return reply(smp);
1048 }
1049
1050 static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1051 u8 port)
1052 {
1053 struct qib_ibport *ibp = to_iport(ibdev, port);
1054 u8 *p = (u8 *) smp->data;
1055 unsigned i;
1056
1057 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) {
1058 smp->status |= IB_SMP_UNSUP_METHOD;
1059 return reply(smp);
1060 }
1061
1062 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) {
1063 ibp->sl_to_vl[i] = *p >> 4;
1064 ibp->sl_to_vl[i + 1] = *p & 0xF;
1065 }
1066 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)),
1067 _QIB_EVENT_SL2VL_CHANGE_BIT);
1068
1069 return subn_get_sl_to_vl(smp, ibdev, port);
1070 }
1071
1072 static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1073 u8 port)
1074 {
1075 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1076 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1077
1078 memset(smp->data, 0, sizeof(smp->data));
1079
1080 if (ppd->vls_supported == IB_VL_VL0)
1081 smp->status |= IB_SMP_UNSUP_METHOD;
1082 else if (which == IB_VLARB_LOWPRI_0_31)
1083 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1084 smp->data);
1085 else if (which == IB_VLARB_HIGHPRI_0_31)
1086 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1087 smp->data);
1088 else
1089 smp->status |= IB_SMP_INVALID_FIELD;
1090
1091 return reply(smp);
1092 }
1093
1094 static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1095 u8 port)
1096 {
1097 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1098 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1099
1100 if (ppd->vls_supported == IB_VL_VL0)
1101 smp->status |= IB_SMP_UNSUP_METHOD;
1102 else if (which == IB_VLARB_LOWPRI_0_31)
1103 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1104 smp->data);
1105 else if (which == IB_VLARB_HIGHPRI_0_31)
1106 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1107 smp->data);
1108 else
1109 smp->status |= IB_SMP_INVALID_FIELD;
1110
1111 return subn_get_vl_arb(smp, ibdev, port);
1112 }
1113
1114 static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev,
1115 u8 port)
1116 {
1117 /*
1118 * For now, we only send the trap once so no need to process this.
1119 * o13-6, o13-7,
1120 * o14-3.a4 The SMA shall not send any message in response to a valid
1121 * SubnTrapRepress() message.
1122 */
1123 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1124 }
1125
1126 static int pma_get_classportinfo(struct ib_pma_mad *pmp,
1127 struct ib_device *ibdev)
1128 {
1129 struct ib_class_port_info *p =
1130 (struct ib_class_port_info *)pmp->data;
1131 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1132
1133 memset(pmp->data, 0, sizeof(pmp->data));
1134
1135 if (pmp->mad_hdr.attr_mod != 0)
1136 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1137
1138 /* Note that AllPortSelect is not valid */
1139 p->base_version = 1;
1140 p->class_version = 1;
1141 p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
1142 /*
1143 * Set the most significant bit of CM2 to indicate support for
1144 * congestion statistics
1145 */
1146 p->reserved[0] = dd->psxmitwait_supported << 7;
1147 /*
1148 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
1149 */
1150 p->resp_time_value = 18;
1151
1152 return reply((struct ib_smp *) pmp);
1153 }
1154
1155 static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp,
1156 struct ib_device *ibdev, u8 port)
1157 {
1158 struct ib_pma_portsamplescontrol *p =
1159 (struct ib_pma_portsamplescontrol *)pmp->data;
1160 struct qib_ibdev *dev = to_idev(ibdev);
1161 struct qib_devdata *dd = dd_from_dev(dev);
1162 struct qib_ibport *ibp = to_iport(ibdev, port);
1163 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1164 unsigned long flags;
1165 u8 port_select = p->port_select;
1166
1167 memset(pmp->data, 0, sizeof(pmp->data));
1168
1169 p->port_select = port_select;
1170 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1171 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1172 goto bail;
1173 }
1174 spin_lock_irqsave(&ibp->lock, flags);
1175 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS);
1176 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1177 p->counter_width = 4; /* 32 bit counters */
1178 p->counter_mask0_9 = COUNTER_MASK0_9;
1179 p->sample_start = cpu_to_be32(ibp->pma_sample_start);
1180 p->sample_interval = cpu_to_be32(ibp->pma_sample_interval);
1181 p->tag = cpu_to_be16(ibp->pma_tag);
1182 p->counter_select[0] = ibp->pma_counter_select[0];
1183 p->counter_select[1] = ibp->pma_counter_select[1];
1184 p->counter_select[2] = ibp->pma_counter_select[2];
1185 p->counter_select[3] = ibp->pma_counter_select[3];
1186 p->counter_select[4] = ibp->pma_counter_select[4];
1187 spin_unlock_irqrestore(&ibp->lock, flags);
1188
1189 bail:
1190 return reply((struct ib_smp *) pmp);
1191 }
1192
1193 static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp,
1194 struct ib_device *ibdev, u8 port)
1195 {
1196 struct ib_pma_portsamplescontrol *p =
1197 (struct ib_pma_portsamplescontrol *)pmp->data;
1198 struct qib_ibdev *dev = to_idev(ibdev);
1199 struct qib_devdata *dd = dd_from_dev(dev);
1200 struct qib_ibport *ibp = to_iport(ibdev, port);
1201 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1202 unsigned long flags;
1203 u8 status, xmit_flags;
1204 int ret;
1205
1206 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
1207 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1208 ret = reply((struct ib_smp *) pmp);
1209 goto bail;
1210 }
1211
1212 spin_lock_irqsave(&ibp->lock, flags);
1213
1214 /* Port Sampling code owns the PS* HW counters */
1215 xmit_flags = ppd->cong_stats.flags;
1216 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE;
1217 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1218 if (status == IB_PMA_SAMPLE_STATUS_DONE ||
1219 (status == IB_PMA_SAMPLE_STATUS_RUNNING &&
1220 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) {
1221 ibp->pma_sample_start = be32_to_cpu(p->sample_start);
1222 ibp->pma_sample_interval = be32_to_cpu(p->sample_interval);
1223 ibp->pma_tag = be16_to_cpu(p->tag);
1224 ibp->pma_counter_select[0] = p->counter_select[0];
1225 ibp->pma_counter_select[1] = p->counter_select[1];
1226 ibp->pma_counter_select[2] = p->counter_select[2];
1227 ibp->pma_counter_select[3] = p->counter_select[3];
1228 ibp->pma_counter_select[4] = p->counter_select[4];
1229 dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval,
1230 ibp->pma_sample_start);
1231 }
1232 spin_unlock_irqrestore(&ibp->lock, flags);
1233
1234 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1235
1236 bail:
1237 return ret;
1238 }
1239
1240 static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd,
1241 __be16 sel)
1242 {
1243 u64 ret;
1244
1245 switch (sel) {
1246 case IB_PMA_PORT_XMIT_DATA:
1247 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA);
1248 break;
1249 case IB_PMA_PORT_RCV_DATA:
1250 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA);
1251 break;
1252 case IB_PMA_PORT_XMIT_PKTS:
1253 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS);
1254 break;
1255 case IB_PMA_PORT_RCV_PKTS:
1256 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS);
1257 break;
1258 case IB_PMA_PORT_XMIT_WAIT:
1259 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT);
1260 break;
1261 default:
1262 ret = 0;
1263 }
1264
1265 return ret;
1266 }
1267
1268 /* This function assumes that the xmit_wait lock is already held */
1269 static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd)
1270 {
1271 u32 delta;
1272
1273 delta = get_counter(&ppd->ibport_data, ppd,
1274 IB_PMA_PORT_XMIT_WAIT);
1275 return ppd->cong_stats.counter + delta;
1276 }
1277
1278 static void cache_hw_sample_counters(struct qib_pportdata *ppd)
1279 {
1280 struct qib_ibport *ibp = &ppd->ibport_data;
1281
1282 ppd->cong_stats.counter_cache.psxmitdata =
1283 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA);
1284 ppd->cong_stats.counter_cache.psrcvdata =
1285 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA);
1286 ppd->cong_stats.counter_cache.psxmitpkts =
1287 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS);
1288 ppd->cong_stats.counter_cache.psrcvpkts =
1289 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS);
1290 ppd->cong_stats.counter_cache.psxmitwait =
1291 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT);
1292 }
1293
1294 static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd,
1295 __be16 sel)
1296 {
1297 u64 ret;
1298
1299 switch (sel) {
1300 case IB_PMA_PORT_XMIT_DATA:
1301 ret = ppd->cong_stats.counter_cache.psxmitdata;
1302 break;
1303 case IB_PMA_PORT_RCV_DATA:
1304 ret = ppd->cong_stats.counter_cache.psrcvdata;
1305 break;
1306 case IB_PMA_PORT_XMIT_PKTS:
1307 ret = ppd->cong_stats.counter_cache.psxmitpkts;
1308 break;
1309 case IB_PMA_PORT_RCV_PKTS:
1310 ret = ppd->cong_stats.counter_cache.psrcvpkts;
1311 break;
1312 case IB_PMA_PORT_XMIT_WAIT:
1313 ret = ppd->cong_stats.counter_cache.psxmitwait;
1314 break;
1315 default:
1316 ret = 0;
1317 }
1318
1319 return ret;
1320 }
1321
1322 static int pma_get_portsamplesresult(struct ib_pma_mad *pmp,
1323 struct ib_device *ibdev, u8 port)
1324 {
1325 struct ib_pma_portsamplesresult *p =
1326 (struct ib_pma_portsamplesresult *)pmp->data;
1327 struct qib_ibdev *dev = to_idev(ibdev);
1328 struct qib_devdata *dd = dd_from_dev(dev);
1329 struct qib_ibport *ibp = to_iport(ibdev, port);
1330 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1331 unsigned long flags;
1332 u8 status;
1333 int i;
1334
1335 memset(pmp->data, 0, sizeof(pmp->data));
1336 spin_lock_irqsave(&ibp->lock, flags);
1337 p->tag = cpu_to_be16(ibp->pma_tag);
1338 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1339 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1340 else {
1341 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1342 p->sample_status = cpu_to_be16(status);
1343 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1344 cache_hw_sample_counters(ppd);
1345 ppd->cong_stats.counter =
1346 xmit_wait_get_value_delta(ppd);
1347 dd->f_set_cntr_sample(ppd,
1348 QIB_CONG_TIMER_PSINTERVAL, 0);
1349 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1350 }
1351 }
1352 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1353 p->counter[i] = cpu_to_be32(
1354 get_cache_hw_sample_counters(
1355 ppd, ibp->pma_counter_select[i]));
1356 spin_unlock_irqrestore(&ibp->lock, flags);
1357
1358 return reply((struct ib_smp *) pmp);
1359 }
1360
1361 static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp,
1362 struct ib_device *ibdev, u8 port)
1363 {
1364 struct ib_pma_portsamplesresult_ext *p =
1365 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1366 struct qib_ibdev *dev = to_idev(ibdev);
1367 struct qib_devdata *dd = dd_from_dev(dev);
1368 struct qib_ibport *ibp = to_iport(ibdev, port);
1369 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1370 unsigned long flags;
1371 u8 status;
1372 int i;
1373
1374 /* Port Sampling code owns the PS* HW counters */
1375 memset(pmp->data, 0, sizeof(pmp->data));
1376 spin_lock_irqsave(&ibp->lock, flags);
1377 p->tag = cpu_to_be16(ibp->pma_tag);
1378 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1379 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1380 else {
1381 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1382 p->sample_status = cpu_to_be16(status);
1383 /* 64 bits */
1384 p->extended_width = cpu_to_be32(0x80000000);
1385 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1386 cache_hw_sample_counters(ppd);
1387 ppd->cong_stats.counter =
1388 xmit_wait_get_value_delta(ppd);
1389 dd->f_set_cntr_sample(ppd,
1390 QIB_CONG_TIMER_PSINTERVAL, 0);
1391 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1392 }
1393 }
1394 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1395 p->counter[i] = cpu_to_be64(
1396 get_cache_hw_sample_counters(
1397 ppd, ibp->pma_counter_select[i]));
1398 spin_unlock_irqrestore(&ibp->lock, flags);
1399
1400 return reply((struct ib_smp *) pmp);
1401 }
1402
1403 static int pma_get_portcounters(struct ib_pma_mad *pmp,
1404 struct ib_device *ibdev, u8 port)
1405 {
1406 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1407 pmp->data;
1408 struct qib_ibport *ibp = to_iport(ibdev, port);
1409 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1410 struct qib_verbs_counters cntrs;
1411 u8 port_select = p->port_select;
1412
1413 qib_get_counters(ppd, &cntrs);
1414
1415 /* Adjust counters for any resets done. */
1416 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1417 cntrs.link_error_recovery_counter -=
1418 ibp->z_link_error_recovery_counter;
1419 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1420 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1421 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors;
1422 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1423 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1424 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1425 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1426 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1427 cntrs.local_link_integrity_errors -=
1428 ibp->z_local_link_integrity_errors;
1429 cntrs.excessive_buffer_overrun_errors -=
1430 ibp->z_excessive_buffer_overrun_errors;
1431 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1432 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1433
1434 memset(pmp->data, 0, sizeof(pmp->data));
1435
1436 p->port_select = port_select;
1437 if (pmp->mad_hdr.attr_mod != 0 || port_select != port)
1438 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1439
1440 if (cntrs.symbol_error_counter > 0xFFFFUL)
1441 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1442 else
1443 p->symbol_error_counter =
1444 cpu_to_be16((u16)cntrs.symbol_error_counter);
1445 if (cntrs.link_error_recovery_counter > 0xFFUL)
1446 p->link_error_recovery_counter = 0xFF;
1447 else
1448 p->link_error_recovery_counter =
1449 (u8)cntrs.link_error_recovery_counter;
1450 if (cntrs.link_downed_counter > 0xFFUL)
1451 p->link_downed_counter = 0xFF;
1452 else
1453 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1454 if (cntrs.port_rcv_errors > 0xFFFFUL)
1455 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1456 else
1457 p->port_rcv_errors =
1458 cpu_to_be16((u16) cntrs.port_rcv_errors);
1459 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1460 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1461 else
1462 p->port_rcv_remphys_errors =
1463 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1464 if (cntrs.port_xmit_discards > 0xFFFFUL)
1465 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1466 else
1467 p->port_xmit_discards =
1468 cpu_to_be16((u16)cntrs.port_xmit_discards);
1469 if (cntrs.local_link_integrity_errors > 0xFUL)
1470 cntrs.local_link_integrity_errors = 0xFUL;
1471 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1472 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1473 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1474 cntrs.excessive_buffer_overrun_errors;
1475 if (cntrs.vl15_dropped > 0xFFFFUL)
1476 p->vl15_dropped = cpu_to_be16(0xFFFF);
1477 else
1478 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1479 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1480 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF);
1481 else
1482 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1483 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1484 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF);
1485 else
1486 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1487 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1488 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF);
1489 else
1490 p->port_xmit_packets =
1491 cpu_to_be32((u32)cntrs.port_xmit_packets);
1492 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1493 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF);
1494 else
1495 p->port_rcv_packets =
1496 cpu_to_be32((u32) cntrs.port_rcv_packets);
1497
1498 return reply((struct ib_smp *) pmp);
1499 }
1500
1501 static int pma_get_portcounters_cong(struct ib_pma_mad *pmp,
1502 struct ib_device *ibdev, u8 port)
1503 {
1504 /* Congestion PMA packets start at offset 24 not 64 */
1505 struct ib_pma_portcounters_cong *p =
1506 (struct ib_pma_portcounters_cong *)pmp->reserved;
1507 struct qib_verbs_counters cntrs;
1508 struct qib_ibport *ibp = to_iport(ibdev, port);
1509 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1510 struct qib_devdata *dd = dd_from_ppd(ppd);
1511 u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF;
1512 u64 xmit_wait_counter;
1513 unsigned long flags;
1514
1515 /*
1516 * This check is performed only in the GET method because the
1517 * SET method ends up calling this anyway.
1518 */
1519 if (!dd->psxmitwait_supported)
1520 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
1521 if (port_select != port)
1522 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1523
1524 qib_get_counters(ppd, &cntrs);
1525 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1526 xmit_wait_counter = xmit_wait_get_value_delta(ppd);
1527 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1528
1529 /* Adjust counters for any resets done. */
1530 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1531 cntrs.link_error_recovery_counter -=
1532 ibp->z_link_error_recovery_counter;
1533 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1534 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1535 cntrs.port_rcv_remphys_errors -=
1536 ibp->z_port_rcv_remphys_errors;
1537 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1538 cntrs.local_link_integrity_errors -=
1539 ibp->z_local_link_integrity_errors;
1540 cntrs.excessive_buffer_overrun_errors -=
1541 ibp->z_excessive_buffer_overrun_errors;
1542 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1543 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1544 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1545 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1546 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1547 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1548
1549 memset(pmp->reserved, 0, sizeof(pmp->reserved) +
1550 sizeof(pmp->data));
1551
1552 /*
1553 * Set top 3 bits to indicate interval in picoseconds in
1554 * remaining bits.
1555 */
1556 p->port_check_rate =
1557 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) |
1558 (dd->psxmitwait_check_rate &
1559 ~(QIB_XMIT_RATE_PICO << 13)));
1560 p->port_adr_events = cpu_to_be64(0);
1561 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter);
1562 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data);
1563 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data);
1564 p->port_xmit_packets =
1565 cpu_to_be64(cntrs.port_xmit_packets);
1566 p->port_rcv_packets =
1567 cpu_to_be64(cntrs.port_rcv_packets);
1568 if (cntrs.symbol_error_counter > 0xFFFFUL)
1569 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1570 else
1571 p->symbol_error_counter =
1572 cpu_to_be16(
1573 (u16)cntrs.symbol_error_counter);
1574 if (cntrs.link_error_recovery_counter > 0xFFUL)
1575 p->link_error_recovery_counter = 0xFF;
1576 else
1577 p->link_error_recovery_counter =
1578 (u8)cntrs.link_error_recovery_counter;
1579 if (cntrs.link_downed_counter > 0xFFUL)
1580 p->link_downed_counter = 0xFF;
1581 else
1582 p->link_downed_counter =
1583 (u8)cntrs.link_downed_counter;
1584 if (cntrs.port_rcv_errors > 0xFFFFUL)
1585 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1586 else
1587 p->port_rcv_errors =
1588 cpu_to_be16((u16) cntrs.port_rcv_errors);
1589 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1590 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1591 else
1592 p->port_rcv_remphys_errors =
1593 cpu_to_be16(
1594 (u16)cntrs.port_rcv_remphys_errors);
1595 if (cntrs.port_xmit_discards > 0xFFFFUL)
1596 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1597 else
1598 p->port_xmit_discards =
1599 cpu_to_be16((u16)cntrs.port_xmit_discards);
1600 if (cntrs.local_link_integrity_errors > 0xFUL)
1601 cntrs.local_link_integrity_errors = 0xFUL;
1602 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1603 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1604 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1605 cntrs.excessive_buffer_overrun_errors;
1606 if (cntrs.vl15_dropped > 0xFFFFUL)
1607 p->vl15_dropped = cpu_to_be16(0xFFFF);
1608 else
1609 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1610
1611 return reply((struct ib_smp *)pmp);
1612 }
1613
1614 static int pma_get_portcounters_ext(struct ib_pma_mad *pmp,
1615 struct ib_device *ibdev, u8 port)
1616 {
1617 struct ib_pma_portcounters_ext *p =
1618 (struct ib_pma_portcounters_ext *)pmp->data;
1619 struct qib_ibport *ibp = to_iport(ibdev, port);
1620 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1621 u64 swords, rwords, spkts, rpkts, xwait;
1622 u8 port_select = p->port_select;
1623
1624 memset(pmp->data, 0, sizeof(pmp->data));
1625
1626 p->port_select = port_select;
1627 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1628 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1629 goto bail;
1630 }
1631
1632 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1633
1634 /* Adjust counters for any resets done. */
1635 swords -= ibp->z_port_xmit_data;
1636 rwords -= ibp->z_port_rcv_data;
1637 spkts -= ibp->z_port_xmit_packets;
1638 rpkts -= ibp->z_port_rcv_packets;
1639
1640 p->port_xmit_data = cpu_to_be64(swords);
1641 p->port_rcv_data = cpu_to_be64(rwords);
1642 p->port_xmit_packets = cpu_to_be64(spkts);
1643 p->port_rcv_packets = cpu_to_be64(rpkts);
1644 p->port_unicast_xmit_packets = cpu_to_be64(ibp->n_unicast_xmit);
1645 p->port_unicast_rcv_packets = cpu_to_be64(ibp->n_unicast_rcv);
1646 p->port_multicast_xmit_packets = cpu_to_be64(ibp->n_multicast_xmit);
1647 p->port_multicast_rcv_packets = cpu_to_be64(ibp->n_multicast_rcv);
1648
1649 bail:
1650 return reply((struct ib_smp *) pmp);
1651 }
1652
1653 static int pma_set_portcounters(struct ib_pma_mad *pmp,
1654 struct ib_device *ibdev, u8 port)
1655 {
1656 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1657 pmp->data;
1658 struct qib_ibport *ibp = to_iport(ibdev, port);
1659 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1660 struct qib_verbs_counters cntrs;
1661
1662 /*
1663 * Since the HW doesn't support clearing counters, we save the
1664 * current count and subtract it from future responses.
1665 */
1666 qib_get_counters(ppd, &cntrs);
1667
1668 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1669 ibp->z_symbol_error_counter = cntrs.symbol_error_counter;
1670
1671 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1672 ibp->z_link_error_recovery_counter =
1673 cntrs.link_error_recovery_counter;
1674
1675 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1676 ibp->z_link_downed_counter = cntrs.link_downed_counter;
1677
1678 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1679 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1680
1681 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1682 ibp->z_port_rcv_remphys_errors =
1683 cntrs.port_rcv_remphys_errors;
1684
1685 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1686 ibp->z_port_xmit_discards = cntrs.port_xmit_discards;
1687
1688 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1689 ibp->z_local_link_integrity_errors =
1690 cntrs.local_link_integrity_errors;
1691
1692 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1693 ibp->z_excessive_buffer_overrun_errors =
1694 cntrs.excessive_buffer_overrun_errors;
1695
1696 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
1697 ibp->n_vl15_dropped = 0;
1698 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1699 }
1700
1701 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1702 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1703
1704 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1705 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1706
1707 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1708 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1709
1710 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1711 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1712
1713 return pma_get_portcounters(pmp, ibdev, port);
1714 }
1715
1716 static int pma_set_portcounters_cong(struct ib_pma_mad *pmp,
1717 struct ib_device *ibdev, u8 port)
1718 {
1719 struct qib_ibport *ibp = to_iport(ibdev, port);
1720 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1721 struct qib_devdata *dd = dd_from_ppd(ppd);
1722 struct qib_verbs_counters cntrs;
1723 u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF;
1724 int ret = 0;
1725 unsigned long flags;
1726
1727 qib_get_counters(ppd, &cntrs);
1728 /* Get counter values before we save them */
1729 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1730
1731 if (counter_select & IB_PMA_SEL_CONG_XMIT) {
1732 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1733 ppd->cong_stats.counter = 0;
1734 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
1735 0x0);
1736 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1737 }
1738 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) {
1739 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1740 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1741 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1742 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1743 }
1744 if (counter_select & IB_PMA_SEL_CONG_ALL) {
1745 ibp->z_symbol_error_counter =
1746 cntrs.symbol_error_counter;
1747 ibp->z_link_error_recovery_counter =
1748 cntrs.link_error_recovery_counter;
1749 ibp->z_link_downed_counter =
1750 cntrs.link_downed_counter;
1751 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1752 ibp->z_port_rcv_remphys_errors =
1753 cntrs.port_rcv_remphys_errors;
1754 ibp->z_port_xmit_discards =
1755 cntrs.port_xmit_discards;
1756 ibp->z_local_link_integrity_errors =
1757 cntrs.local_link_integrity_errors;
1758 ibp->z_excessive_buffer_overrun_errors =
1759 cntrs.excessive_buffer_overrun_errors;
1760 ibp->n_vl15_dropped = 0;
1761 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1762 }
1763
1764 return ret;
1765 }
1766
1767 static int pma_set_portcounters_ext(struct ib_pma_mad *pmp,
1768 struct ib_device *ibdev, u8 port)
1769 {
1770 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1771 pmp->data;
1772 struct qib_ibport *ibp = to_iport(ibdev, port);
1773 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1774 u64 swords, rwords, spkts, rpkts, xwait;
1775
1776 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1777
1778 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1779 ibp->z_port_xmit_data = swords;
1780
1781 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1782 ibp->z_port_rcv_data = rwords;
1783
1784 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1785 ibp->z_port_xmit_packets = spkts;
1786
1787 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1788 ibp->z_port_rcv_packets = rpkts;
1789
1790 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1791 ibp->n_unicast_xmit = 0;
1792
1793 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1794 ibp->n_unicast_rcv = 0;
1795
1796 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1797 ibp->n_multicast_xmit = 0;
1798
1799 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1800 ibp->n_multicast_rcv = 0;
1801
1802 return pma_get_portcounters_ext(pmp, ibdev, port);
1803 }
1804
1805 static int process_subn(struct ib_device *ibdev, int mad_flags,
1806 u8 port, struct ib_mad *in_mad,
1807 struct ib_mad *out_mad)
1808 {
1809 struct ib_smp *smp = (struct ib_smp *)out_mad;
1810 struct qib_ibport *ibp = to_iport(ibdev, port);
1811 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1812 int ret;
1813
1814 *out_mad = *in_mad;
1815 if (smp->class_version != 1) {
1816 smp->status |= IB_SMP_UNSUP_VERSION;
1817 ret = reply(smp);
1818 goto bail;
1819 }
1820
1821 ret = check_mkey(ibp, smp, mad_flags);
1822 if (ret) {
1823 u32 port_num = be32_to_cpu(smp->attr_mod);
1824
1825 /*
1826 * If this is a get/set portinfo, we already check the
1827 * M_Key if the MAD is for another port and the M_Key
1828 * is OK on the receiving port. This check is needed
1829 * to increment the error counters when the M_Key
1830 * fails to match on *both* ports.
1831 */
1832 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
1833 (smp->method == IB_MGMT_METHOD_GET ||
1834 smp->method == IB_MGMT_METHOD_SET) &&
1835 port_num && port_num <= ibdev->phys_port_cnt &&
1836 port != port_num)
1837 (void) check_mkey(to_iport(ibdev, port_num), smp, 0);
1838 goto bail;
1839 }
1840
1841 switch (smp->method) {
1842 case IB_MGMT_METHOD_GET:
1843 switch (smp->attr_id) {
1844 case IB_SMP_ATTR_NODE_DESC:
1845 ret = subn_get_nodedescription(smp, ibdev);
1846 goto bail;
1847 case IB_SMP_ATTR_NODE_INFO:
1848 ret = subn_get_nodeinfo(smp, ibdev, port);
1849 goto bail;
1850 case IB_SMP_ATTR_GUID_INFO:
1851 ret = subn_get_guidinfo(smp, ibdev, port);
1852 goto bail;
1853 case IB_SMP_ATTR_PORT_INFO:
1854 ret = subn_get_portinfo(smp, ibdev, port);
1855 goto bail;
1856 case IB_SMP_ATTR_PKEY_TABLE:
1857 ret = subn_get_pkeytable(smp, ibdev, port);
1858 goto bail;
1859 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1860 ret = subn_get_sl_to_vl(smp, ibdev, port);
1861 goto bail;
1862 case IB_SMP_ATTR_VL_ARB_TABLE:
1863 ret = subn_get_vl_arb(smp, ibdev, port);
1864 goto bail;
1865 case IB_SMP_ATTR_SM_INFO:
1866 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1867 ret = IB_MAD_RESULT_SUCCESS |
1868 IB_MAD_RESULT_CONSUMED;
1869 goto bail;
1870 }
1871 if (ibp->port_cap_flags & IB_PORT_SM) {
1872 ret = IB_MAD_RESULT_SUCCESS;
1873 goto bail;
1874 }
1875 /* FALLTHROUGH */
1876 default:
1877 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1878 ret = reply(smp);
1879 goto bail;
1880 }
1881
1882 case IB_MGMT_METHOD_SET:
1883 switch (smp->attr_id) {
1884 case IB_SMP_ATTR_GUID_INFO:
1885 ret = subn_set_guidinfo(smp, ibdev, port);
1886 goto bail;
1887 case IB_SMP_ATTR_PORT_INFO:
1888 ret = subn_set_portinfo(smp, ibdev, port);
1889 goto bail;
1890 case IB_SMP_ATTR_PKEY_TABLE:
1891 ret = subn_set_pkeytable(smp, ibdev, port);
1892 goto bail;
1893 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1894 ret = subn_set_sl_to_vl(smp, ibdev, port);
1895 goto bail;
1896 case IB_SMP_ATTR_VL_ARB_TABLE:
1897 ret = subn_set_vl_arb(smp, ibdev, port);
1898 goto bail;
1899 case IB_SMP_ATTR_SM_INFO:
1900 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1901 ret = IB_MAD_RESULT_SUCCESS |
1902 IB_MAD_RESULT_CONSUMED;
1903 goto bail;
1904 }
1905 if (ibp->port_cap_flags & IB_PORT_SM) {
1906 ret = IB_MAD_RESULT_SUCCESS;
1907 goto bail;
1908 }
1909 /* FALLTHROUGH */
1910 default:
1911 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1912 ret = reply(smp);
1913 goto bail;
1914 }
1915
1916 case IB_MGMT_METHOD_TRAP_REPRESS:
1917 if (smp->attr_id == IB_SMP_ATTR_NOTICE)
1918 ret = subn_trap_repress(smp, ibdev, port);
1919 else {
1920 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1921 ret = reply(smp);
1922 }
1923 goto bail;
1924
1925 case IB_MGMT_METHOD_TRAP:
1926 case IB_MGMT_METHOD_REPORT:
1927 case IB_MGMT_METHOD_REPORT_RESP:
1928 case IB_MGMT_METHOD_GET_RESP:
1929 /*
1930 * The ib_mad module will call us to process responses
1931 * before checking for other consumers.
1932 * Just tell the caller to process it normally.
1933 */
1934 ret = IB_MAD_RESULT_SUCCESS;
1935 goto bail;
1936
1937 case IB_MGMT_METHOD_SEND:
1938 if (ib_get_smp_direction(smp) &&
1939 smp->attr_id == QIB_VENDOR_IPG) {
1940 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT,
1941 smp->data[0]);
1942 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1943 } else
1944 ret = IB_MAD_RESULT_SUCCESS;
1945 goto bail;
1946
1947 default:
1948 smp->status |= IB_SMP_UNSUP_METHOD;
1949 ret = reply(smp);
1950 }
1951
1952 bail:
1953 return ret;
1954 }
1955
1956 static int process_perf(struct ib_device *ibdev, u8 port,
1957 struct ib_mad *in_mad,
1958 struct ib_mad *out_mad)
1959 {
1960 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
1961 int ret;
1962
1963 *out_mad = *in_mad;
1964 if (pmp->mad_hdr.class_version != 1) {
1965 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
1966 ret = reply((struct ib_smp *) pmp);
1967 goto bail;
1968 }
1969
1970 switch (pmp->mad_hdr.method) {
1971 case IB_MGMT_METHOD_GET:
1972 switch (pmp->mad_hdr.attr_id) {
1973 case IB_PMA_CLASS_PORT_INFO:
1974 ret = pma_get_classportinfo(pmp, ibdev);
1975 goto bail;
1976 case IB_PMA_PORT_SAMPLES_CONTROL:
1977 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1978 goto bail;
1979 case IB_PMA_PORT_SAMPLES_RESULT:
1980 ret = pma_get_portsamplesresult(pmp, ibdev, port);
1981 goto bail;
1982 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1983 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port);
1984 goto bail;
1985 case IB_PMA_PORT_COUNTERS:
1986 ret = pma_get_portcounters(pmp, ibdev, port);
1987 goto bail;
1988 case IB_PMA_PORT_COUNTERS_EXT:
1989 ret = pma_get_portcounters_ext(pmp, ibdev, port);
1990 goto bail;
1991 case IB_PMA_PORT_COUNTERS_CONG:
1992 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1993 goto bail;
1994 default:
1995 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
1996 ret = reply((struct ib_smp *) pmp);
1997 goto bail;
1998 }
1999
2000 case IB_MGMT_METHOD_SET:
2001 switch (pmp->mad_hdr.attr_id) {
2002 case IB_PMA_PORT_SAMPLES_CONTROL:
2003 ret = pma_set_portsamplescontrol(pmp, ibdev, port);
2004 goto bail;
2005 case IB_PMA_PORT_COUNTERS:
2006 ret = pma_set_portcounters(pmp, ibdev, port);
2007 goto bail;
2008 case IB_PMA_PORT_COUNTERS_EXT:
2009 ret = pma_set_portcounters_ext(pmp, ibdev, port);
2010 goto bail;
2011 case IB_PMA_PORT_COUNTERS_CONG:
2012 ret = pma_set_portcounters_cong(pmp, ibdev, port);
2013 goto bail;
2014 default:
2015 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
2016 ret = reply((struct ib_smp *) pmp);
2017 goto bail;
2018 }
2019
2020 case IB_MGMT_METHOD_TRAP:
2021 case IB_MGMT_METHOD_GET_RESP:
2022 /*
2023 * The ib_mad module will call us to process responses
2024 * before checking for other consumers.
2025 * Just tell the caller to process it normally.
2026 */
2027 ret = IB_MAD_RESULT_SUCCESS;
2028 goto bail;
2029
2030 default:
2031 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
2032 ret = reply((struct ib_smp *) pmp);
2033 }
2034
2035 bail:
2036 return ret;
2037 }
2038
2039 /**
2040 * qib_process_mad - process an incoming MAD packet
2041 * @ibdev: the infiniband device this packet came in on
2042 * @mad_flags: MAD flags
2043 * @port: the port number this packet came in on
2044 * @in_wc: the work completion entry for this packet
2045 * @in_grh: the global route header for this packet
2046 * @in_mad: the incoming MAD
2047 * @out_mad: any outgoing MAD reply
2048 *
2049 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
2050 * interested in processing.
2051 *
2052 * Note that the verbs framework has already done the MAD sanity checks,
2053 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
2054 * MADs.
2055 *
2056 * This is called by the ib_mad module.
2057 */
2058 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
2059 struct ib_wc *in_wc, struct ib_grh *in_grh,
2060 struct ib_mad *in_mad, struct ib_mad *out_mad)
2061 {
2062 int ret;
2063
2064 switch (in_mad->mad_hdr.mgmt_class) {
2065 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
2066 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
2067 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
2068 goto bail;
2069
2070 case IB_MGMT_CLASS_PERF_MGMT:
2071 ret = process_perf(ibdev, port, in_mad, out_mad);
2072 goto bail;
2073
2074 default:
2075 ret = IB_MAD_RESULT_SUCCESS;
2076 }
2077
2078 bail:
2079 return ret;
2080 }
2081
2082 static void send_handler(struct ib_mad_agent *agent,
2083 struct ib_mad_send_wc *mad_send_wc)
2084 {
2085 ib_free_send_mad(mad_send_wc->send_buf);
2086 }
2087
2088 static void xmit_wait_timer_func(unsigned long opaque)
2089 {
2090 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
2091 struct qib_devdata *dd = dd_from_ppd(ppd);
2092 unsigned long flags;
2093 u8 status;
2094
2095 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
2096 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) {
2097 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
2098 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
2099 /* save counter cache */
2100 cache_hw_sample_counters(ppd);
2101 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
2102 } else
2103 goto done;
2104 }
2105 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd);
2106 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0);
2107 done:
2108 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
2109 mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
2110 }
2111
2112 int qib_create_agents(struct qib_ibdev *dev)
2113 {
2114 struct qib_devdata *dd = dd_from_dev(dev);
2115 struct ib_mad_agent *agent;
2116 struct qib_ibport *ibp;
2117 int p;
2118 int ret;
2119
2120 for (p = 0; p < dd->num_pports; p++) {
2121 ibp = &dd->pport[p].ibport_data;
2122 agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI,
2123 NULL, 0, send_handler,
2124 NULL, NULL);
2125 if (IS_ERR(agent)) {
2126 ret = PTR_ERR(agent);
2127 goto err;
2128 }
2129
2130 /* Initialize xmit_wait structure */
2131 dd->pport[p].cong_stats.counter = 0;
2132 init_timer(&dd->pport[p].cong_stats.timer);
2133 dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func;
2134 dd->pport[p].cong_stats.timer.data =
2135 (unsigned long)(&dd->pport[p]);
2136 dd->pport[p].cong_stats.timer.expires = 0;
2137 add_timer(&dd->pport[p].cong_stats.timer);
2138
2139 ibp->send_agent = agent;
2140 }
2141
2142 return 0;
2143
2144 err:
2145 for (p = 0; p < dd->num_pports; p++) {
2146 ibp = &dd->pport[p].ibport_data;
2147 if (ibp->send_agent) {
2148 agent = ibp->send_agent;
2149 ibp->send_agent = NULL;
2150 ib_unregister_mad_agent(agent);
2151 }
2152 }
2153
2154 return ret;
2155 }
2156
2157 void qib_free_agents(struct qib_ibdev *dev)
2158 {
2159 struct qib_devdata *dd = dd_from_dev(dev);
2160 struct ib_mad_agent *agent;
2161 struct qib_ibport *ibp;
2162 int p;
2163
2164 for (p = 0; p < dd->num_pports; p++) {
2165 ibp = &dd->pport[p].ibport_data;
2166 if (ibp->send_agent) {
2167 agent = ibp->send_agent;
2168 ibp->send_agent = NULL;
2169 ib_unregister_mad_agent(agent);
2170 }
2171 if (ibp->sm_ah) {
2172 ib_destroy_ah(&ibp->sm_ah->ibah);
2173 ibp->sm_ah = NULL;
2174 }
2175 if (dd->pport[p].cong_stats.timer.data)
2176 del_timer_sync(&dd->pport[p].cong_stats.timer);
2177 }
2178 }
Linux with added FPC-III support