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spi-topcliff-pch: add recovery processing in case wait-event timeout
[zen-stable.git] / drivers / infiniband / hw / qib / qib_mad.c
blob3b3745f261f0bdd5cc04683398be228b223d8403
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 u16 lid;
437 u8 mtu;
438 int ret;
439 u32 state;
440 u32 port_num = be32_to_cpu(smp->attr_mod);
441
442 if (port_num == 0)
443 port_num = port;
444 else {
445 if (port_num > ibdev->phys_port_cnt) {
446 smp->status |= IB_SMP_INVALID_FIELD;
447 ret = reply(smp);
448 goto bail;
449 }
450 if (port_num != port) {
451 ibp = to_iport(ibdev, port_num);
452 ret = check_mkey(ibp, smp, 0);
453 if (ret)
454 goto bail;
455 }
456 }
457
458 dd = dd_from_ibdev(ibdev);
459 /* IB numbers ports from 1, hdw from 0 */
460 ppd = dd->pport + (port_num - 1);
461 ibp = &ppd->ibport_data;
462
463 /* Clear all fields. Only set the non-zero fields. */
464 memset(smp->data, 0, sizeof(smp->data));
465
466 /* Only return the mkey if the protection field allows it. */
467 if (!(smp->method == IB_MGMT_METHOD_GET &&
468 ibp->mkey != smp->mkey &&
469 ibp->mkeyprot == 1))
470 pip->mkey = ibp->mkey;
471 pip->gid_prefix = ibp->gid_prefix;
472 lid = ppd->lid;
473 pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
474 pip->sm_lid = cpu_to_be16(ibp->sm_lid);
475 pip->cap_mask = cpu_to_be32(ibp->port_cap_flags);
476 /* pip->diag_code; */
477 pip->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period);
478 pip->local_port_num = port;
479 pip->link_width_enabled = ppd->link_width_enabled;
480 pip->link_width_supported = ppd->link_width_supported;
481 pip->link_width_active = ppd->link_width_active;
482 state = dd->f_iblink_state(ppd->lastibcstat);
483 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state;
484
485 pip->portphysstate_linkdown =
486 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) |
487 (get_linkdowndefaultstate(ppd) ? 1 : 2);
488 pip->mkeyprot_resv_lmc = (ibp->mkeyprot << 6) | ppd->lmc;
489 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) |
490 ppd->link_speed_enabled;
491 switch (ppd->ibmtu) {
492 default: /* something is wrong; fall through */
493 case 4096:
494 mtu = IB_MTU_4096;
495 break;
496 case 2048:
497 mtu = IB_MTU_2048;
498 break;
499 case 1024:
500 mtu = IB_MTU_1024;
501 break;
502 case 512:
503 mtu = IB_MTU_512;
504 break;
505 case 256:
506 mtu = IB_MTU_256;
507 break;
508 }
509 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->sm_sl;
510 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
511 pip->vl_high_limit = ibp->vl_high_limit;
512 pip->vl_arb_high_cap =
513 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP);
514 pip->vl_arb_low_cap =
515 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP);
516 /* InitTypeReply = 0 */
517 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096;
518 /* HCAs ignore VLStallCount and HOQLife */
519 /* pip->vlstallcnt_hoqlife; */
520 pip->operationalvl_pei_peo_fpi_fpo =
521 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4;
522 pip->mkey_violations = cpu_to_be16(ibp->mkey_violations);
523 /* P_KeyViolations are counted by hardware. */
524 pip->pkey_violations = cpu_to_be16(ibp->pkey_violations);
525 pip->qkey_violations = cpu_to_be16(ibp->qkey_violations);
526 /* Only the hardware GUID is supported for now */
527 pip->guid_cap = QIB_GUIDS_PER_PORT;
528 pip->clientrereg_resv_subnetto = ibp->subnet_timeout;
529 /* 32.768 usec. response time (guessing) */
530 pip->resv_resptimevalue = 3;
531 pip->localphyerrors_overrunerrors =
532 (get_phyerrthreshold(ppd) << 4) |
533 get_overrunthreshold(ppd);
534 /* pip->max_credit_hint; */
535 if (ibp->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) {
536 u32 v;
537
538 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY);
539 pip->link_roundtrip_latency[0] = v >> 16;
540 pip->link_roundtrip_latency[1] = v >> 8;
541 pip->link_roundtrip_latency[2] = v;
542 }
543
544 ret = reply(smp);
545
546 bail:
547 return ret;
548 }
549
550 /**
551 * get_pkeys - return the PKEY table
552 * @dd: the qlogic_ib device
553 * @port: the IB port number
554 * @pkeys: the pkey table is placed here
555 */
556 static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
557 {
558 struct qib_pportdata *ppd = dd->pport + port - 1;
559 /*
560 * always a kernel context, no locking needed.
561 * If we get here with ppd setup, no need to check
562 * that pd is valid.
563 */
564 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx];
565
566 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys));
567
568 return 0;
569 }
570
571 static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
572 u8 port)
573 {
574 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
575 u16 *p = (u16 *) smp->data;
576 __be16 *q = (__be16 *) smp->data;
577
578 /* 64 blocks of 32 16-bit P_Key entries */
579
580 memset(smp->data, 0, sizeof(smp->data));
581 if (startpx == 0) {
582 struct qib_devdata *dd = dd_from_ibdev(ibdev);
583 unsigned i, n = qib_get_npkeys(dd);
584
585 get_pkeys(dd, port, p);
586
587 for (i = 0; i < n; i++)
588 q[i] = cpu_to_be16(p[i]);
589 } else
590 smp->status |= IB_SMP_INVALID_FIELD;
591
592 return reply(smp);
593 }
594
595 static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
596 u8 port)
597 {
598 struct qib_devdata *dd = dd_from_ibdev(ibdev);
599 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
600 __be64 *p = (__be64 *) smp->data;
601 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
602
603 /* 32 blocks of 8 64-bit GUIDs per block */
604
605 if (startgx == 0 && pidx < dd->num_pports) {
606 struct qib_pportdata *ppd = dd->pport + pidx;
607 struct qib_ibport *ibp = &ppd->ibport_data;
608 unsigned i;
609
610 /* The first entry is read-only. */
611 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
612 ibp->guids[i - 1] = p[i];
613 } else
614 smp->status |= IB_SMP_INVALID_FIELD;
615
616 /* The only GUID we support is the first read-only entry. */
617 return subn_get_guidinfo(smp, ibdev, port);
618 }
619
620 /**
621 * subn_set_portinfo - set port information
622 * @smp: the incoming SM packet
623 * @ibdev: the infiniband device
624 * @port: the port on the device
625 *
626 * Set Portinfo (see ch. 14.2.5.6).
627 */
628 static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
629 u8 port)
630 {
631 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
632 struct ib_event event;
633 struct qib_devdata *dd;
634 struct qib_pportdata *ppd;
635 struct qib_ibport *ibp;
636 char clientrereg = 0;
637 unsigned long flags;
638 u16 lid, smlid;
639 u8 lwe;
640 u8 lse;
641 u8 state;
642 u8 vls;
643 u8 msl;
644 u16 lstate;
645 int ret, ore, mtu;
646 u32 port_num = be32_to_cpu(smp->attr_mod);
647
648 if (port_num == 0)
649 port_num = port;
650 else {
651 if (port_num > ibdev->phys_port_cnt)
652 goto err;
653 /* Port attributes can only be set on the receiving port */
654 if (port_num != port)
655 goto get_only;
656 }
657
658 dd = dd_from_ibdev(ibdev);
659 /* IB numbers ports from 1, hdw from 0 */
660 ppd = dd->pport + (port_num - 1);
661 ibp = &ppd->ibport_data;
662 event.device = ibdev;
663 event.element.port_num = port;
664
665 ibp->mkey = pip->mkey;
666 ibp->gid_prefix = pip->gid_prefix;
667 ibp->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
668
669 lid = be16_to_cpu(pip->lid);
670 /* Must be a valid unicast LID address. */
671 if (lid == 0 || lid >= QIB_MULTICAST_LID_BASE)
672 smp->status |= IB_SMP_INVALID_FIELD;
673 else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) {
674 if (ppd->lid != lid)
675 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT);
676 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7))
677 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT);
678 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7);
679 event.event = IB_EVENT_LID_CHANGE;
680 ib_dispatch_event(&event);
681 }
682
683 smlid = be16_to_cpu(pip->sm_lid);
684 msl = pip->neighbormtu_mastersmsl & 0xF;
685 /* Must be a valid unicast LID address. */
686 if (smlid == 0 || smlid >= QIB_MULTICAST_LID_BASE)
687 smp->status |= IB_SMP_INVALID_FIELD;
688 else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) {
689 spin_lock_irqsave(&ibp->lock, flags);
690 if (ibp->sm_ah) {
691 if (smlid != ibp->sm_lid)
692 ibp->sm_ah->attr.dlid = smlid;
693 if (msl != ibp->sm_sl)
694 ibp->sm_ah->attr.sl = msl;
695 }
696 spin_unlock_irqrestore(&ibp->lock, flags);
697 if (smlid != ibp->sm_lid)
698 ibp->sm_lid = smlid;
699 if (msl != ibp->sm_sl)
700 ibp->sm_sl = msl;
701 event.event = IB_EVENT_SM_CHANGE;
702 ib_dispatch_event(&event);
703 }
704
705 /* Allow 1x or 4x to be set (see 14.2.6.6). */
706 lwe = pip->link_width_enabled;
707 if (lwe) {
708 if (lwe == 0xFF)
709 set_link_width_enabled(ppd, ppd->link_width_supported);
710 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported))
711 smp->status |= IB_SMP_INVALID_FIELD;
712 else if (lwe != ppd->link_width_enabled)
713 set_link_width_enabled(ppd, lwe);
714 }
715
716 lse = pip->linkspeedactive_enabled & 0xF;
717 if (lse) {
718 /*
719 * The IB 1.2 spec. only allows link speed values
720 * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific
721 * speeds.
722 */
723 if (lse == 15)
724 set_link_speed_enabled(ppd,
725 ppd->link_speed_supported);
726 else if (lse >= 8 || (lse & ~ppd->link_speed_supported))
727 smp->status |= IB_SMP_INVALID_FIELD;
728 else if (lse != ppd->link_speed_enabled)
729 set_link_speed_enabled(ppd, lse);
730 }
731
732 /* Set link down default state. */
733 switch (pip->portphysstate_linkdown & 0xF) {
734 case 0: /* NOP */
735 break;
736 case 1: /* SLEEP */
737 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
738 IB_LINKINITCMD_SLEEP);
739 break;
740 case 2: /* POLL */
741 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
742 IB_LINKINITCMD_POLL);
743 break;
744 default:
745 smp->status |= IB_SMP_INVALID_FIELD;
746 }
747
748 ibp->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
749 ibp->vl_high_limit = pip->vl_high_limit;
750 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
751 ibp->vl_high_limit);
752
753 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF);
754 if (mtu == -1)
755 smp->status |= IB_SMP_INVALID_FIELD;
756 else
757 qib_set_mtu(ppd, mtu);
758
759 /* Set operational VLs */
760 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF;
761 if (vls) {
762 if (vls > ppd->vls_supported)
763 smp->status |= IB_SMP_INVALID_FIELD;
764 else
765 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls);
766 }
767
768 if (pip->mkey_violations == 0)
769 ibp->mkey_violations = 0;
770
771 if (pip->pkey_violations == 0)
772 ibp->pkey_violations = 0;
773
774 if (pip->qkey_violations == 0)
775 ibp->qkey_violations = 0;
776
777 ore = pip->localphyerrors_overrunerrors;
778 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF))
779 smp->status |= IB_SMP_INVALID_FIELD;
780
781 if (set_overrunthreshold(ppd, (ore & 0xF)))
782 smp->status |= IB_SMP_INVALID_FIELD;
783
784 ibp->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
785
786 if (pip->clientrereg_resv_subnetto & 0x80) {
787 clientrereg = 1;
788 event.event = IB_EVENT_CLIENT_REREGISTER;
789 ib_dispatch_event(&event);
790 }
791
792 /*
793 * Do the port state change now that the other link parameters
794 * have been set.
795 * Changing the port physical state only makes sense if the link
796 * is down or is being set to down.
797 */
798 state = pip->linkspeed_portstate & 0xF;
799 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
800 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
801 smp->status |= IB_SMP_INVALID_FIELD;
802
803 /*
804 * Only state changes of DOWN, ARM, and ACTIVE are valid
805 * and must be in the correct state to take effect (see 7.2.6).
806 */
807 switch (state) {
808 case IB_PORT_NOP:
809 if (lstate == 0)
810 break;
811 /* FALLTHROUGH */
812 case IB_PORT_DOWN:
813 if (lstate == 0)
814 lstate = QIB_IB_LINKDOWN_ONLY;
815 else if (lstate == 1)
816 lstate = QIB_IB_LINKDOWN_SLEEP;
817 else if (lstate == 2)
818 lstate = QIB_IB_LINKDOWN;
819 else if (lstate == 3)
820 lstate = QIB_IB_LINKDOWN_DISABLE;
821 else {
822 smp->status |= IB_SMP_INVALID_FIELD;
823 break;
824 }
825 spin_lock_irqsave(&ppd->lflags_lock, flags);
826 ppd->lflags &= ~QIBL_LINKV;
827 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
828 qib_set_linkstate(ppd, lstate);
829 /*
830 * Don't send a reply if the response would be sent
831 * through the disabled port.
832 */
833 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) {
834 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
835 goto done;
836 }
837 qib_wait_linkstate(ppd, QIBL_LINKV, 10);
838 break;
839 case IB_PORT_ARMED:
840 qib_set_linkstate(ppd, QIB_IB_LINKARM);
841 break;
842 case IB_PORT_ACTIVE:
843 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE);
844 break;
845 default:
846 smp->status |= IB_SMP_INVALID_FIELD;
847 }
848
849 ret = subn_get_portinfo(smp, ibdev, port);
850
851 if (clientrereg)
852 pip->clientrereg_resv_subnetto |= 0x80;
853
854 goto get_only;
855
856 err:
857 smp->status |= IB_SMP_INVALID_FIELD;
858 get_only:
859 ret = subn_get_portinfo(smp, ibdev, port);
860 done:
861 return ret;
862 }
863
864 /**
865 * rm_pkey - decrecment the reference count for the given PKEY
866 * @dd: the qlogic_ib device
867 * @key: the PKEY index
868 *
869 * Return true if this was the last reference and the hardware table entry
870 * needs to be changed.
871 */
872 static int rm_pkey(struct qib_pportdata *ppd, u16 key)
873 {
874 int i;
875 int ret;
876
877 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
878 if (ppd->pkeys[i] != key)
879 continue;
880 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) {
881 ppd->pkeys[i] = 0;
882 ret = 1;
883 goto bail;
884 }
885 break;
886 }
887
888 ret = 0;
889
890 bail:
891 return ret;
892 }
893
894 /**
895 * add_pkey - add the given PKEY to the hardware table
896 * @dd: the qlogic_ib device
897 * @key: the PKEY
898 *
899 * Return an error code if unable to add the entry, zero if no change,
900 * or 1 if the hardware PKEY register needs to be updated.
901 */
902 static int add_pkey(struct qib_pportdata *ppd, u16 key)
903 {
904 int i;
905 u16 lkey = key & 0x7FFF;
906 int any = 0;
907 int ret;
908
909 if (lkey == 0x7FFF) {
910 ret = 0;
911 goto bail;
912 }
913
914 /* Look for an empty slot or a matching PKEY. */
915 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
916 if (!ppd->pkeys[i]) {
917 any++;
918 continue;
919 }
920 /* If it matches exactly, try to increment the ref count */
921 if (ppd->pkeys[i] == key) {
922 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) {
923 ret = 0;
924 goto bail;
925 }
926 /* Lost the race. Look for an empty slot below. */
927 atomic_dec(&ppd->pkeyrefs[i]);
928 any++;
929 }
930 /*
931 * It makes no sense to have both the limited and unlimited
932 * PKEY set at the same time since the unlimited one will
933 * disable the limited one.
934 */
935 if ((ppd->pkeys[i] & 0x7FFF) == lkey) {
936 ret = -EEXIST;
937 goto bail;
938 }
939 }
940 if (!any) {
941 ret = -EBUSY;
942 goto bail;
943 }
944 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
945 if (!ppd->pkeys[i] &&
946 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) {
947 /* for qibstats, etc. */
948 ppd->pkeys[i] = key;
949 ret = 1;
950 goto bail;
951 }
952 }
953 ret = -EBUSY;
954
955 bail:
956 return ret;
957 }
958
959 /**
960 * set_pkeys - set the PKEY table for ctxt 0
961 * @dd: the qlogic_ib device
962 * @port: the IB port number
963 * @pkeys: the PKEY table
964 */
965 static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
966 {
967 struct qib_pportdata *ppd;
968 struct qib_ctxtdata *rcd;
969 int i;
970 int changed = 0;
971
972 /*
973 * IB port one/two always maps to context zero/one,
974 * always a kernel context, no locking needed
975 * If we get here with ppd setup, no need to check
976 * that rcd is valid.
977 */
978 ppd = dd->pport + (port - 1);
979 rcd = dd->rcd[ppd->hw_pidx];
980
981 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) {
982 u16 key = pkeys[i];
983 u16 okey = rcd->pkeys[i];
984
985 if (key == okey)
986 continue;
987 /*
988 * The value of this PKEY table entry is changing.
989 * Remove the old entry in the hardware's array of PKEYs.
990 */
991 if (okey & 0x7FFF)
992 changed |= rm_pkey(ppd, okey);
993 if (key & 0x7FFF) {
994 int ret = add_pkey(ppd, key);
995
996 if (ret < 0)
997 key = 0;
998 else
999 changed |= ret;
1000 }
1001 rcd->pkeys[i] = key;
1002 }
1003 if (changed) {
1004 struct ib_event event;
1005
1006 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0);
1007
1008 event.event = IB_EVENT_PKEY_CHANGE;
1009 event.device = &dd->verbs_dev.ibdev;
1010 event.element.port_num = 1;
1011 ib_dispatch_event(&event);
1012 }
1013 return 0;
1014 }
1015
1016 static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
1017 u8 port)
1018 {
1019 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
1020 __be16 *p = (__be16 *) smp->data;
1021 u16 *q = (u16 *) smp->data;
1022 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1023 unsigned i, n = qib_get_npkeys(dd);
1024
1025 for (i = 0; i < n; i++)
1026 q[i] = be16_to_cpu(p[i]);
1027
1028 if (startpx != 0 || set_pkeys(dd, port, q) != 0)
1029 smp->status |= IB_SMP_INVALID_FIELD;
1030
1031 return subn_get_pkeytable(smp, ibdev, port);
1032 }
1033
1034 static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1035 u8 port)
1036 {
1037 struct qib_ibport *ibp = to_iport(ibdev, port);
1038 u8 *p = (u8 *) smp->data;
1039 unsigned i;
1040
1041 memset(smp->data, 0, sizeof(smp->data));
1042
1043 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP))
1044 smp->status |= IB_SMP_UNSUP_METHOD;
1045 else
1046 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2)
1047 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1];
1048
1049 return reply(smp);
1050 }
1051
1052 static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1053 u8 port)
1054 {
1055 struct qib_ibport *ibp = to_iport(ibdev, port);
1056 u8 *p = (u8 *) smp->data;
1057 unsigned i;
1058
1059 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) {
1060 smp->status |= IB_SMP_UNSUP_METHOD;
1061 return reply(smp);
1062 }
1063
1064 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) {
1065 ibp->sl_to_vl[i] = *p >> 4;
1066 ibp->sl_to_vl[i + 1] = *p & 0xF;
1067 }
1068 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)),
1069 _QIB_EVENT_SL2VL_CHANGE_BIT);
1070
1071 return subn_get_sl_to_vl(smp, ibdev, port);
1072 }
1073
1074 static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1075 u8 port)
1076 {
1077 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1078 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1079
1080 memset(smp->data, 0, sizeof(smp->data));
1081
1082 if (ppd->vls_supported == IB_VL_VL0)
1083 smp->status |= IB_SMP_UNSUP_METHOD;
1084 else if (which == IB_VLARB_LOWPRI_0_31)
1085 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1086 smp->data);
1087 else if (which == IB_VLARB_HIGHPRI_0_31)
1088 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1089 smp->data);
1090 else
1091 smp->status |= IB_SMP_INVALID_FIELD;
1092
1093 return reply(smp);
1094 }
1095
1096 static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1097 u8 port)
1098 {
1099 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1100 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1101
1102 if (ppd->vls_supported == IB_VL_VL0)
1103 smp->status |= IB_SMP_UNSUP_METHOD;
1104 else if (which == IB_VLARB_LOWPRI_0_31)
1105 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1106 smp->data);
1107 else if (which == IB_VLARB_HIGHPRI_0_31)
1108 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1109 smp->data);
1110 else
1111 smp->status |= IB_SMP_INVALID_FIELD;
1112
1113 return subn_get_vl_arb(smp, ibdev, port);
1114 }
1115
1116 static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev,
1117 u8 port)
1118 {
1119 /*
1120 * For now, we only send the trap once so no need to process this.
1121 * o13-6, o13-7,
1122 * o14-3.a4 The SMA shall not send any message in response to a valid
1123 * SubnTrapRepress() message.
1124 */
1125 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1126 }
1127
1128 static int pma_get_classportinfo(struct ib_pma_mad *pmp,
1129 struct ib_device *ibdev)
1130 {
1131 struct ib_class_port_info *p =
1132 (struct ib_class_port_info *)pmp->data;
1133 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1134
1135 memset(pmp->data, 0, sizeof(pmp->data));
1136
1137 if (pmp->mad_hdr.attr_mod != 0)
1138 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1139
1140 /* Note that AllPortSelect is not valid */
1141 p->base_version = 1;
1142 p->class_version = 1;
1143 p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
1144 /*
1145 * Set the most significant bit of CM2 to indicate support for
1146 * congestion statistics
1147 */
1148 p->reserved[0] = dd->psxmitwait_supported << 7;
1149 /*
1150 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
1151 */
1152 p->resp_time_value = 18;
1153
1154 return reply((struct ib_smp *) pmp);
1155 }
1156
1157 static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp,
1158 struct ib_device *ibdev, u8 port)
1159 {
1160 struct ib_pma_portsamplescontrol *p =
1161 (struct ib_pma_portsamplescontrol *)pmp->data;
1162 struct qib_ibdev *dev = to_idev(ibdev);
1163 struct qib_devdata *dd = dd_from_dev(dev);
1164 struct qib_ibport *ibp = to_iport(ibdev, port);
1165 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1166 unsigned long flags;
1167 u8 port_select = p->port_select;
1168
1169 memset(pmp->data, 0, sizeof(pmp->data));
1170
1171 p->port_select = port_select;
1172 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1173 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1174 goto bail;
1175 }
1176 spin_lock_irqsave(&ibp->lock, flags);
1177 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS);
1178 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1179 p->counter_width = 4; /* 32 bit counters */
1180 p->counter_mask0_9 = COUNTER_MASK0_9;
1181 p->sample_start = cpu_to_be32(ibp->pma_sample_start);
1182 p->sample_interval = cpu_to_be32(ibp->pma_sample_interval);
1183 p->tag = cpu_to_be16(ibp->pma_tag);
1184 p->counter_select[0] = ibp->pma_counter_select[0];
1185 p->counter_select[1] = ibp->pma_counter_select[1];
1186 p->counter_select[2] = ibp->pma_counter_select[2];
1187 p->counter_select[3] = ibp->pma_counter_select[3];
1188 p->counter_select[4] = ibp->pma_counter_select[4];
1189 spin_unlock_irqrestore(&ibp->lock, flags);
1190
1191 bail:
1192 return reply((struct ib_smp *) pmp);
1193 }
1194
1195 static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp,
1196 struct ib_device *ibdev, u8 port)
1197 {
1198 struct ib_pma_portsamplescontrol *p =
1199 (struct ib_pma_portsamplescontrol *)pmp->data;
1200 struct qib_ibdev *dev = to_idev(ibdev);
1201 struct qib_devdata *dd = dd_from_dev(dev);
1202 struct qib_ibport *ibp = to_iport(ibdev, port);
1203 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1204 unsigned long flags;
1205 u8 status, xmit_flags;
1206 int ret;
1207
1208 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
1209 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1210 ret = reply((struct ib_smp *) pmp);
1211 goto bail;
1212 }
1213
1214 spin_lock_irqsave(&ibp->lock, flags);
1215
1216 /* Port Sampling code owns the PS* HW counters */
1217 xmit_flags = ppd->cong_stats.flags;
1218 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE;
1219 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1220 if (status == IB_PMA_SAMPLE_STATUS_DONE ||
1221 (status == IB_PMA_SAMPLE_STATUS_RUNNING &&
1222 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) {
1223 ibp->pma_sample_start = be32_to_cpu(p->sample_start);
1224 ibp->pma_sample_interval = be32_to_cpu(p->sample_interval);
1225 ibp->pma_tag = be16_to_cpu(p->tag);
1226 ibp->pma_counter_select[0] = p->counter_select[0];
1227 ibp->pma_counter_select[1] = p->counter_select[1];
1228 ibp->pma_counter_select[2] = p->counter_select[2];
1229 ibp->pma_counter_select[3] = p->counter_select[3];
1230 ibp->pma_counter_select[4] = p->counter_select[4];
1231 dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval,
1232 ibp->pma_sample_start);
1233 }
1234 spin_unlock_irqrestore(&ibp->lock, flags);
1235
1236 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1237
1238 bail:
1239 return ret;
1240 }
1241
1242 static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd,
1243 __be16 sel)
1244 {
1245 u64 ret;
1246
1247 switch (sel) {
1248 case IB_PMA_PORT_XMIT_DATA:
1249 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA);
1250 break;
1251 case IB_PMA_PORT_RCV_DATA:
1252 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA);
1253 break;
1254 case IB_PMA_PORT_XMIT_PKTS:
1255 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS);
1256 break;
1257 case IB_PMA_PORT_RCV_PKTS:
1258 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS);
1259 break;
1260 case IB_PMA_PORT_XMIT_WAIT:
1261 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT);
1262 break;
1263 default:
1264 ret = 0;
1265 }
1266
1267 return ret;
1268 }
1269
1270 /* This function assumes that the xmit_wait lock is already held */
1271 static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd)
1272 {
1273 u32 delta;
1274
1275 delta = get_counter(&ppd->ibport_data, ppd,
1276 IB_PMA_PORT_XMIT_WAIT);
1277 return ppd->cong_stats.counter + delta;
1278 }
1279
1280 static void cache_hw_sample_counters(struct qib_pportdata *ppd)
1281 {
1282 struct qib_ibport *ibp = &ppd->ibport_data;
1283
1284 ppd->cong_stats.counter_cache.psxmitdata =
1285 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA);
1286 ppd->cong_stats.counter_cache.psrcvdata =
1287 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA);
1288 ppd->cong_stats.counter_cache.psxmitpkts =
1289 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS);
1290 ppd->cong_stats.counter_cache.psrcvpkts =
1291 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS);
1292 ppd->cong_stats.counter_cache.psxmitwait =
1293 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT);
1294 }
1295
1296 static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd,
1297 __be16 sel)
1298 {
1299 u64 ret;
1300
1301 switch (sel) {
1302 case IB_PMA_PORT_XMIT_DATA:
1303 ret = ppd->cong_stats.counter_cache.psxmitdata;
1304 break;
1305 case IB_PMA_PORT_RCV_DATA:
1306 ret = ppd->cong_stats.counter_cache.psrcvdata;
1307 break;
1308 case IB_PMA_PORT_XMIT_PKTS:
1309 ret = ppd->cong_stats.counter_cache.psxmitpkts;
1310 break;
1311 case IB_PMA_PORT_RCV_PKTS:
1312 ret = ppd->cong_stats.counter_cache.psrcvpkts;
1313 break;
1314 case IB_PMA_PORT_XMIT_WAIT:
1315 ret = ppd->cong_stats.counter_cache.psxmitwait;
1316 break;
1317 default:
1318 ret = 0;
1319 }
1320
1321 return ret;
1322 }
1323
1324 static int pma_get_portsamplesresult(struct ib_pma_mad *pmp,
1325 struct ib_device *ibdev, u8 port)
1326 {
1327 struct ib_pma_portsamplesresult *p =
1328 (struct ib_pma_portsamplesresult *)pmp->data;
1329 struct qib_ibdev *dev = to_idev(ibdev);
1330 struct qib_devdata *dd = dd_from_dev(dev);
1331 struct qib_ibport *ibp = to_iport(ibdev, port);
1332 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1333 unsigned long flags;
1334 u8 status;
1335 int i;
1336
1337 memset(pmp->data, 0, sizeof(pmp->data));
1338 spin_lock_irqsave(&ibp->lock, flags);
1339 p->tag = cpu_to_be16(ibp->pma_tag);
1340 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1341 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1342 else {
1343 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1344 p->sample_status = cpu_to_be16(status);
1345 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1346 cache_hw_sample_counters(ppd);
1347 ppd->cong_stats.counter =
1348 xmit_wait_get_value_delta(ppd);
1349 dd->f_set_cntr_sample(ppd,
1350 QIB_CONG_TIMER_PSINTERVAL, 0);
1351 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1352 }
1353 }
1354 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1355 p->counter[i] = cpu_to_be32(
1356 get_cache_hw_sample_counters(
1357 ppd, ibp->pma_counter_select[i]));
1358 spin_unlock_irqrestore(&ibp->lock, flags);
1359
1360 return reply((struct ib_smp *) pmp);
1361 }
1362
1363 static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp,
1364 struct ib_device *ibdev, u8 port)
1365 {
1366 struct ib_pma_portsamplesresult_ext *p =
1367 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1368 struct qib_ibdev *dev = to_idev(ibdev);
1369 struct qib_devdata *dd = dd_from_dev(dev);
1370 struct qib_ibport *ibp = to_iport(ibdev, port);
1371 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1372 unsigned long flags;
1373 u8 status;
1374 int i;
1375
1376 /* Port Sampling code owns the PS* HW counters */
1377 memset(pmp->data, 0, sizeof(pmp->data));
1378 spin_lock_irqsave(&ibp->lock, flags);
1379 p->tag = cpu_to_be16(ibp->pma_tag);
1380 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1381 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1382 else {
1383 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1384 p->sample_status = cpu_to_be16(status);
1385 /* 64 bits */
1386 p->extended_width = cpu_to_be32(0x80000000);
1387 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1388 cache_hw_sample_counters(ppd);
1389 ppd->cong_stats.counter =
1390 xmit_wait_get_value_delta(ppd);
1391 dd->f_set_cntr_sample(ppd,
1392 QIB_CONG_TIMER_PSINTERVAL, 0);
1393 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1394 }
1395 }
1396 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1397 p->counter[i] = cpu_to_be64(
1398 get_cache_hw_sample_counters(
1399 ppd, ibp->pma_counter_select[i]));
1400 spin_unlock_irqrestore(&ibp->lock, flags);
1401
1402 return reply((struct ib_smp *) pmp);
1403 }
1404
1405 static int pma_get_portcounters(struct ib_pma_mad *pmp,
1406 struct ib_device *ibdev, u8 port)
1407 {
1408 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1409 pmp->data;
1410 struct qib_ibport *ibp = to_iport(ibdev, port);
1411 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1412 struct qib_verbs_counters cntrs;
1413 u8 port_select = p->port_select;
1414
1415 qib_get_counters(ppd, &cntrs);
1416
1417 /* Adjust counters for any resets done. */
1418 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1419 cntrs.link_error_recovery_counter -=
1420 ibp->z_link_error_recovery_counter;
1421 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1422 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1423 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors;
1424 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1425 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1426 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1427 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1428 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1429 cntrs.local_link_integrity_errors -=
1430 ibp->z_local_link_integrity_errors;
1431 cntrs.excessive_buffer_overrun_errors -=
1432 ibp->z_excessive_buffer_overrun_errors;
1433 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1434 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1435
1436 memset(pmp->data, 0, sizeof(pmp->data));
1437
1438 p->port_select = port_select;
1439 if (pmp->mad_hdr.attr_mod != 0 || port_select != port)
1440 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1441
1442 if (cntrs.symbol_error_counter > 0xFFFFUL)
1443 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1444 else
1445 p->symbol_error_counter =
1446 cpu_to_be16((u16)cntrs.symbol_error_counter);
1447 if (cntrs.link_error_recovery_counter > 0xFFUL)
1448 p->link_error_recovery_counter = 0xFF;
1449 else
1450 p->link_error_recovery_counter =
1451 (u8)cntrs.link_error_recovery_counter;
1452 if (cntrs.link_downed_counter > 0xFFUL)
1453 p->link_downed_counter = 0xFF;
1454 else
1455 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1456 if (cntrs.port_rcv_errors > 0xFFFFUL)
1457 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1458 else
1459 p->port_rcv_errors =
1460 cpu_to_be16((u16) cntrs.port_rcv_errors);
1461 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1462 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1463 else
1464 p->port_rcv_remphys_errors =
1465 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1466 if (cntrs.port_xmit_discards > 0xFFFFUL)
1467 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1468 else
1469 p->port_xmit_discards =
1470 cpu_to_be16((u16)cntrs.port_xmit_discards);
1471 if (cntrs.local_link_integrity_errors > 0xFUL)
1472 cntrs.local_link_integrity_errors = 0xFUL;
1473 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1474 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1475 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1476 cntrs.excessive_buffer_overrun_errors;
1477 if (cntrs.vl15_dropped > 0xFFFFUL)
1478 p->vl15_dropped = cpu_to_be16(0xFFFF);
1479 else
1480 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1481 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1482 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF);
1483 else
1484 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1485 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1486 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF);
1487 else
1488 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1489 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1490 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF);
1491 else
1492 p->port_xmit_packets =
1493 cpu_to_be32((u32)cntrs.port_xmit_packets);
1494 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1495 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF);
1496 else
1497 p->port_rcv_packets =
1498 cpu_to_be32((u32) cntrs.port_rcv_packets);
1499
1500 return reply((struct ib_smp *) pmp);
1501 }
1502
1503 static int pma_get_portcounters_cong(struct ib_pma_mad *pmp,
1504 struct ib_device *ibdev, u8 port)
1505 {
1506 /* Congestion PMA packets start at offset 24 not 64 */
1507 struct ib_pma_portcounters_cong *p =
1508 (struct ib_pma_portcounters_cong *)pmp->reserved;
1509 struct qib_verbs_counters cntrs;
1510 struct qib_ibport *ibp = to_iport(ibdev, port);
1511 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1512 struct qib_devdata *dd = dd_from_ppd(ppd);
1513 u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF;
1514 u64 xmit_wait_counter;
1515 unsigned long flags;
1516
1517 /*
1518 * This check is performed only in the GET method because the
1519 * SET method ends up calling this anyway.
1520 */
1521 if (!dd->psxmitwait_supported)
1522 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
1523 if (port_select != port)
1524 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1525
1526 qib_get_counters(ppd, &cntrs);
1527 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1528 xmit_wait_counter = xmit_wait_get_value_delta(ppd);
1529 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1530
1531 /* Adjust counters for any resets done. */
1532 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1533 cntrs.link_error_recovery_counter -=
1534 ibp->z_link_error_recovery_counter;
1535 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1536 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1537 cntrs.port_rcv_remphys_errors -=
1538 ibp->z_port_rcv_remphys_errors;
1539 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1540 cntrs.local_link_integrity_errors -=
1541 ibp->z_local_link_integrity_errors;
1542 cntrs.excessive_buffer_overrun_errors -=
1543 ibp->z_excessive_buffer_overrun_errors;
1544 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1545 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1546 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1547 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1548 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1549 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1550
1551 memset(pmp->reserved, 0, sizeof(pmp->reserved) +
1552 sizeof(pmp->data));
1553
1554 /*
1555 * Set top 3 bits to indicate interval in picoseconds in
1556 * remaining bits.
1557 */
1558 p->port_check_rate =
1559 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) |
1560 (dd->psxmitwait_check_rate &
1561 ~(QIB_XMIT_RATE_PICO << 13)));
1562 p->port_adr_events = cpu_to_be64(0);
1563 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter);
1564 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data);
1565 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data);
1566 p->port_xmit_packets =
1567 cpu_to_be64(cntrs.port_xmit_packets);
1568 p->port_rcv_packets =
1569 cpu_to_be64(cntrs.port_rcv_packets);
1570 if (cntrs.symbol_error_counter > 0xFFFFUL)
1571 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1572 else
1573 p->symbol_error_counter =
1574 cpu_to_be16(
1575 (u16)cntrs.symbol_error_counter);
1576 if (cntrs.link_error_recovery_counter > 0xFFUL)
1577 p->link_error_recovery_counter = 0xFF;
1578 else
1579 p->link_error_recovery_counter =
1580 (u8)cntrs.link_error_recovery_counter;
1581 if (cntrs.link_downed_counter > 0xFFUL)
1582 p->link_downed_counter = 0xFF;
1583 else
1584 p->link_downed_counter =
1585 (u8)cntrs.link_downed_counter;
1586 if (cntrs.port_rcv_errors > 0xFFFFUL)
1587 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1588 else
1589 p->port_rcv_errors =
1590 cpu_to_be16((u16) cntrs.port_rcv_errors);
1591 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1592 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1593 else
1594 p->port_rcv_remphys_errors =
1595 cpu_to_be16(
1596 (u16)cntrs.port_rcv_remphys_errors);
1597 if (cntrs.port_xmit_discards > 0xFFFFUL)
1598 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1599 else
1600 p->port_xmit_discards =
1601 cpu_to_be16((u16)cntrs.port_xmit_discards);
1602 if (cntrs.local_link_integrity_errors > 0xFUL)
1603 cntrs.local_link_integrity_errors = 0xFUL;
1604 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1605 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1606 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1607 cntrs.excessive_buffer_overrun_errors;
1608 if (cntrs.vl15_dropped > 0xFFFFUL)
1609 p->vl15_dropped = cpu_to_be16(0xFFFF);
1610 else
1611 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1612
1613 return reply((struct ib_smp *)pmp);
1614 }
1615
1616 static int pma_get_portcounters_ext(struct ib_pma_mad *pmp,
1617 struct ib_device *ibdev, u8 port)
1618 {
1619 struct ib_pma_portcounters_ext *p =
1620 (struct ib_pma_portcounters_ext *)pmp->data;
1621 struct qib_ibport *ibp = to_iport(ibdev, port);
1622 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1623 u64 swords, rwords, spkts, rpkts, xwait;
1624 u8 port_select = p->port_select;
1625
1626 memset(pmp->data, 0, sizeof(pmp->data));
1627
1628 p->port_select = port_select;
1629 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1630 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1631 goto bail;
1632 }
1633
1634 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1635
1636 /* Adjust counters for any resets done. */
1637 swords -= ibp->z_port_xmit_data;
1638 rwords -= ibp->z_port_rcv_data;
1639 spkts -= ibp->z_port_xmit_packets;
1640 rpkts -= ibp->z_port_rcv_packets;
1641
1642 p->port_xmit_data = cpu_to_be64(swords);
1643 p->port_rcv_data = cpu_to_be64(rwords);
1644 p->port_xmit_packets = cpu_to_be64(spkts);
1645 p->port_rcv_packets = cpu_to_be64(rpkts);
1646 p->port_unicast_xmit_packets = cpu_to_be64(ibp->n_unicast_xmit);
1647 p->port_unicast_rcv_packets = cpu_to_be64(ibp->n_unicast_rcv);
1648 p->port_multicast_xmit_packets = cpu_to_be64(ibp->n_multicast_xmit);
1649 p->port_multicast_rcv_packets = cpu_to_be64(ibp->n_multicast_rcv);
1650
1651 bail:
1652 return reply((struct ib_smp *) pmp);
1653 }
1654
1655 static int pma_set_portcounters(struct ib_pma_mad *pmp,
1656 struct ib_device *ibdev, u8 port)
1657 {
1658 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1659 pmp->data;
1660 struct qib_ibport *ibp = to_iport(ibdev, port);
1661 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1662 struct qib_verbs_counters cntrs;
1663
1664 /*
1665 * Since the HW doesn't support clearing counters, we save the
1666 * current count and subtract it from future responses.
1667 */
1668 qib_get_counters(ppd, &cntrs);
1669
1670 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1671 ibp->z_symbol_error_counter = cntrs.symbol_error_counter;
1672
1673 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1674 ibp->z_link_error_recovery_counter =
1675 cntrs.link_error_recovery_counter;
1676
1677 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1678 ibp->z_link_downed_counter = cntrs.link_downed_counter;
1679
1680 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1681 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1682
1683 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1684 ibp->z_port_rcv_remphys_errors =
1685 cntrs.port_rcv_remphys_errors;
1686
1687 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1688 ibp->z_port_xmit_discards = cntrs.port_xmit_discards;
1689
1690 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1691 ibp->z_local_link_integrity_errors =
1692 cntrs.local_link_integrity_errors;
1693
1694 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1695 ibp->z_excessive_buffer_overrun_errors =
1696 cntrs.excessive_buffer_overrun_errors;
1697
1698 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
1699 ibp->n_vl15_dropped = 0;
1700 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1701 }
1702
1703 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1704 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1705
1706 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1707 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1708
1709 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1710 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1711
1712 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1713 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1714
1715 return pma_get_portcounters(pmp, ibdev, port);
1716 }
1717
1718 static int pma_set_portcounters_cong(struct ib_pma_mad *pmp,
1719 struct ib_device *ibdev, u8 port)
1720 {
1721 struct qib_ibport *ibp = to_iport(ibdev, port);
1722 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1723 struct qib_devdata *dd = dd_from_ppd(ppd);
1724 struct qib_verbs_counters cntrs;
1725 u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF;
1726 int ret = 0;
1727 unsigned long flags;
1728
1729 qib_get_counters(ppd, &cntrs);
1730 /* Get counter values before we save them */
1731 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1732
1733 if (counter_select & IB_PMA_SEL_CONG_XMIT) {
1734 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1735 ppd->cong_stats.counter = 0;
1736 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
1737 0x0);
1738 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1739 }
1740 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) {
1741 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1742 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1743 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1744 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1745 }
1746 if (counter_select & IB_PMA_SEL_CONG_ALL) {
1747 ibp->z_symbol_error_counter =
1748 cntrs.symbol_error_counter;
1749 ibp->z_link_error_recovery_counter =
1750 cntrs.link_error_recovery_counter;
1751 ibp->z_link_downed_counter =
1752 cntrs.link_downed_counter;
1753 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1754 ibp->z_port_rcv_remphys_errors =
1755 cntrs.port_rcv_remphys_errors;
1756 ibp->z_port_xmit_discards =
1757 cntrs.port_xmit_discards;
1758 ibp->z_local_link_integrity_errors =
1759 cntrs.local_link_integrity_errors;
1760 ibp->z_excessive_buffer_overrun_errors =
1761 cntrs.excessive_buffer_overrun_errors;
1762 ibp->n_vl15_dropped = 0;
1763 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1764 }
1765
1766 return ret;
1767 }
1768
1769 static int pma_set_portcounters_ext(struct ib_pma_mad *pmp,
1770 struct ib_device *ibdev, u8 port)
1771 {
1772 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1773 pmp->data;
1774 struct qib_ibport *ibp = to_iport(ibdev, port);
1775 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1776 u64 swords, rwords, spkts, rpkts, xwait;
1777
1778 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1779
1780 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1781 ibp->z_port_xmit_data = swords;
1782
1783 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1784 ibp->z_port_rcv_data = rwords;
1785
1786 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1787 ibp->z_port_xmit_packets = spkts;
1788
1789 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1790 ibp->z_port_rcv_packets = rpkts;
1791
1792 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1793 ibp->n_unicast_xmit = 0;
1794
1795 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1796 ibp->n_unicast_rcv = 0;
1797
1798 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1799 ibp->n_multicast_xmit = 0;
1800
1801 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1802 ibp->n_multicast_rcv = 0;
1803
1804 return pma_get_portcounters_ext(pmp, ibdev, port);
1805 }
1806
1807 static int process_subn(struct ib_device *ibdev, int mad_flags,
1808 u8 port, struct ib_mad *in_mad,
1809 struct ib_mad *out_mad)
1810 {
1811 struct ib_smp *smp = (struct ib_smp *)out_mad;
1812 struct qib_ibport *ibp = to_iport(ibdev, port);
1813 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1814 int ret;
1815
1816 *out_mad = *in_mad;
1817 if (smp->class_version != 1) {
1818 smp->status |= IB_SMP_UNSUP_VERSION;
1819 ret = reply(smp);
1820 goto bail;
1821 }
1822
1823 ret = check_mkey(ibp, smp, mad_flags);
1824 if (ret) {
1825 u32 port_num = be32_to_cpu(smp->attr_mod);
1826
1827 /*
1828 * If this is a get/set portinfo, we already check the
1829 * M_Key if the MAD is for another port and the M_Key
1830 * is OK on the receiving port. This check is needed
1831 * to increment the error counters when the M_Key
1832 * fails to match on *both* ports.
1833 */
1834 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
1835 (smp->method == IB_MGMT_METHOD_GET ||
1836 smp->method == IB_MGMT_METHOD_SET) &&
1837 port_num && port_num <= ibdev->phys_port_cnt &&
1838 port != port_num)
1839 (void) check_mkey(to_iport(ibdev, port_num), smp, 0);
1840 goto bail;
1841 }
1842
1843 switch (smp->method) {
1844 case IB_MGMT_METHOD_GET:
1845 switch (smp->attr_id) {
1846 case IB_SMP_ATTR_NODE_DESC:
1847 ret = subn_get_nodedescription(smp, ibdev);
1848 goto bail;
1849 case IB_SMP_ATTR_NODE_INFO:
1850 ret = subn_get_nodeinfo(smp, ibdev, port);
1851 goto bail;
1852 case IB_SMP_ATTR_GUID_INFO:
1853 ret = subn_get_guidinfo(smp, ibdev, port);
1854 goto bail;
1855 case IB_SMP_ATTR_PORT_INFO:
1856 ret = subn_get_portinfo(smp, ibdev, port);
1857 goto bail;
1858 case IB_SMP_ATTR_PKEY_TABLE:
1859 ret = subn_get_pkeytable(smp, ibdev, port);
1860 goto bail;
1861 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1862 ret = subn_get_sl_to_vl(smp, ibdev, port);
1863 goto bail;
1864 case IB_SMP_ATTR_VL_ARB_TABLE:
1865 ret = subn_get_vl_arb(smp, ibdev, port);
1866 goto bail;
1867 case IB_SMP_ATTR_SM_INFO:
1868 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1869 ret = IB_MAD_RESULT_SUCCESS |
1870 IB_MAD_RESULT_CONSUMED;
1871 goto bail;
1872 }
1873 if (ibp->port_cap_flags & IB_PORT_SM) {
1874 ret = IB_MAD_RESULT_SUCCESS;
1875 goto bail;
1876 }
1877 /* FALLTHROUGH */
1878 default:
1879 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1880 ret = reply(smp);
1881 goto bail;
1882 }
1883
1884 case IB_MGMT_METHOD_SET:
1885 switch (smp->attr_id) {
1886 case IB_SMP_ATTR_GUID_INFO:
1887 ret = subn_set_guidinfo(smp, ibdev, port);
1888 goto bail;
1889 case IB_SMP_ATTR_PORT_INFO:
1890 ret = subn_set_portinfo(smp, ibdev, port);
1891 goto bail;
1892 case IB_SMP_ATTR_PKEY_TABLE:
1893 ret = subn_set_pkeytable(smp, ibdev, port);
1894 goto bail;
1895 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1896 ret = subn_set_sl_to_vl(smp, ibdev, port);
1897 goto bail;
1898 case IB_SMP_ATTR_VL_ARB_TABLE:
1899 ret = subn_set_vl_arb(smp, ibdev, port);
1900 goto bail;
1901 case IB_SMP_ATTR_SM_INFO:
1902 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1903 ret = IB_MAD_RESULT_SUCCESS |
1904 IB_MAD_RESULT_CONSUMED;
1905 goto bail;
1906 }
1907 if (ibp->port_cap_flags & IB_PORT_SM) {
1908 ret = IB_MAD_RESULT_SUCCESS;
1909 goto bail;
1910 }
1911 /* FALLTHROUGH */
1912 default:
1913 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1914 ret = reply(smp);
1915 goto bail;
1916 }
1917
1918 case IB_MGMT_METHOD_TRAP_REPRESS:
1919 if (smp->attr_id == IB_SMP_ATTR_NOTICE)
1920 ret = subn_trap_repress(smp, ibdev, port);
1921 else {
1922 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1923 ret = reply(smp);
1924 }
1925 goto bail;
1926
1927 case IB_MGMT_METHOD_TRAP:
1928 case IB_MGMT_METHOD_REPORT:
1929 case IB_MGMT_METHOD_REPORT_RESP:
1930 case IB_MGMT_METHOD_GET_RESP:
1931 /*
1932 * The ib_mad module will call us to process responses
1933 * before checking for other consumers.
1934 * Just tell the caller to process it normally.
1935 */
1936 ret = IB_MAD_RESULT_SUCCESS;
1937 goto bail;
1938
1939 case IB_MGMT_METHOD_SEND:
1940 if (ib_get_smp_direction(smp) &&
1941 smp->attr_id == QIB_VENDOR_IPG) {
1942 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT,
1943 smp->data[0]);
1944 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1945 } else
1946 ret = IB_MAD_RESULT_SUCCESS;
1947 goto bail;
1948
1949 default:
1950 smp->status |= IB_SMP_UNSUP_METHOD;
1951 ret = reply(smp);
1952 }
1953
1954 bail:
1955 return ret;
1956 }
1957
1958 static int process_perf(struct ib_device *ibdev, u8 port,
1959 struct ib_mad *in_mad,
1960 struct ib_mad *out_mad)
1961 {
1962 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
1963 int ret;
1964
1965 *out_mad = *in_mad;
1966 if (pmp->mad_hdr.class_version != 1) {
1967 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
1968 ret = reply((struct ib_smp *) pmp);
1969 goto bail;
1970 }
1971
1972 switch (pmp->mad_hdr.method) {
1973 case IB_MGMT_METHOD_GET:
1974 switch (pmp->mad_hdr.attr_id) {
1975 case IB_PMA_CLASS_PORT_INFO:
1976 ret = pma_get_classportinfo(pmp, ibdev);
1977 goto bail;
1978 case IB_PMA_PORT_SAMPLES_CONTROL:
1979 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1980 goto bail;
1981 case IB_PMA_PORT_SAMPLES_RESULT:
1982 ret = pma_get_portsamplesresult(pmp, ibdev, port);
1983 goto bail;
1984 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1985 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port);
1986 goto bail;
1987 case IB_PMA_PORT_COUNTERS:
1988 ret = pma_get_portcounters(pmp, ibdev, port);
1989 goto bail;
1990 case IB_PMA_PORT_COUNTERS_EXT:
1991 ret = pma_get_portcounters_ext(pmp, ibdev, port);
1992 goto bail;
1993 case IB_PMA_PORT_COUNTERS_CONG:
1994 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1995 goto bail;
1996 default:
1997 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
1998 ret = reply((struct ib_smp *) pmp);
1999 goto bail;
2000 }
2001
2002 case IB_MGMT_METHOD_SET:
2003 switch (pmp->mad_hdr.attr_id) {
2004 case IB_PMA_PORT_SAMPLES_CONTROL:
2005 ret = pma_set_portsamplescontrol(pmp, ibdev, port);
2006 goto bail;
2007 case IB_PMA_PORT_COUNTERS:
2008 ret = pma_set_portcounters(pmp, ibdev, port);
2009 goto bail;
2010 case IB_PMA_PORT_COUNTERS_EXT:
2011 ret = pma_set_portcounters_ext(pmp, ibdev, port);
2012 goto bail;
2013 case IB_PMA_PORT_COUNTERS_CONG:
2014 ret = pma_set_portcounters_cong(pmp, ibdev, port);
2015 goto bail;
2016 default:
2017 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
2018 ret = reply((struct ib_smp *) pmp);
2019 goto bail;
2020 }
2021
2022 case IB_MGMT_METHOD_TRAP:
2023 case IB_MGMT_METHOD_GET_RESP:
2024 /*
2025 * The ib_mad module will call us to process responses
2026 * before checking for other consumers.
2027 * Just tell the caller to process it normally.
2028 */
2029 ret = IB_MAD_RESULT_SUCCESS;
2030 goto bail;
2031
2032 default:
2033 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
2034 ret = reply((struct ib_smp *) pmp);
2035 }
2036
2037 bail:
2038 return ret;
2039 }
2040
2041 /**
2042 * qib_process_mad - process an incoming MAD packet
2043 * @ibdev: the infiniband device this packet came in on
2044 * @mad_flags: MAD flags
2045 * @port: the port number this packet came in on
2046 * @in_wc: the work completion entry for this packet
2047 * @in_grh: the global route header for this packet
2048 * @in_mad: the incoming MAD
2049 * @out_mad: any outgoing MAD reply
2050 *
2051 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
2052 * interested in processing.
2053 *
2054 * Note that the verbs framework has already done the MAD sanity checks,
2055 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
2056 * MADs.
2057 *
2058 * This is called by the ib_mad module.
2059 */
2060 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
2061 struct ib_wc *in_wc, struct ib_grh *in_grh,
2062 struct ib_mad *in_mad, struct ib_mad *out_mad)
2063 {
2064 int ret;
2065
2066 switch (in_mad->mad_hdr.mgmt_class) {
2067 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
2068 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
2069 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
2070 goto bail;
2071
2072 case IB_MGMT_CLASS_PERF_MGMT:
2073 ret = process_perf(ibdev, port, in_mad, out_mad);
2074 goto bail;
2075
2076 default:
2077 ret = IB_MAD_RESULT_SUCCESS;
2078 }
2079
2080 bail:
2081 return ret;
2082 }
2083
2084 static void send_handler(struct ib_mad_agent *agent,
2085 struct ib_mad_send_wc *mad_send_wc)
2086 {
2087 ib_free_send_mad(mad_send_wc->send_buf);
2088 }
2089
2090 static void xmit_wait_timer_func(unsigned long opaque)
2091 {
2092 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
2093 struct qib_devdata *dd = dd_from_ppd(ppd);
2094 unsigned long flags;
2095 u8 status;
2096
2097 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
2098 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) {
2099 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
2100 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
2101 /* save counter cache */
2102 cache_hw_sample_counters(ppd);
2103 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
2104 } else
2105 goto done;
2106 }
2107 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd);
2108 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0);
2109 done:
2110 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
2111 mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
2112 }
2113
2114 int qib_create_agents(struct qib_ibdev *dev)
2115 {
2116 struct qib_devdata *dd = dd_from_dev(dev);
2117 struct ib_mad_agent *agent;
2118 struct qib_ibport *ibp;
2119 int p;
2120 int ret;
2121
2122 for (p = 0; p < dd->num_pports; p++) {
2123 ibp = &dd->pport[p].ibport_data;
2124 agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI,
2125 NULL, 0, send_handler,
2126 NULL, NULL);
2127 if (IS_ERR(agent)) {
2128 ret = PTR_ERR(agent);
2129 goto err;
2130 }
2131
2132 /* Initialize xmit_wait structure */
2133 dd->pport[p].cong_stats.counter = 0;
2134 init_timer(&dd->pport[p].cong_stats.timer);
2135 dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func;
2136 dd->pport[p].cong_stats.timer.data =
2137 (unsigned long)(&dd->pport[p]);
2138 dd->pport[p].cong_stats.timer.expires = 0;
2139 add_timer(&dd->pport[p].cong_stats.timer);
2140
2141 ibp->send_agent = agent;
2142 }
2143
2144 return 0;
2145
2146 err:
2147 for (p = 0; p < dd->num_pports; p++) {
2148 ibp = &dd->pport[p].ibport_data;
2149 if (ibp->send_agent) {
2150 agent = ibp->send_agent;
2151 ibp->send_agent = NULL;
2152 ib_unregister_mad_agent(agent);
2153 }
2154 }
2155
2156 return ret;
2157 }
2158
2159 void qib_free_agents(struct qib_ibdev *dev)
2160 {
2161 struct qib_devdata *dd = dd_from_dev(dev);
2162 struct ib_mad_agent *agent;
2163 struct qib_ibport *ibp;
2164 int p;
2165
2166 for (p = 0; p < dd->num_pports; p++) {
2167 ibp = &dd->pport[p].ibport_data;
2168 if (ibp->send_agent) {
2169 agent = ibp->send_agent;
2170 ibp->send_agent = NULL;
2171 ib_unregister_mad_agent(agent);
2172 }
2173 if (ibp->sm_ah) {
2174 ib_destroy_ah(&ibp->sm_ah->ibah);
2175 ibp->sm_ah = NULL;
2176 }
2177 if (dd->pport[p].cong_stats.timer.data)
2178 del_timer_sync(&dd->pport[p].cong_stats.timer);
2179 }
2180 }