?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Staging: zram: fix up some sysfs attribute permissions
[zen-stable.git] / drivers / infiniband / hw / qib / qib_mad.c
blob94b0d1f3a8f01847d398fb16985aad26029dde05
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_SET || ibp->mkey == smp->mkey ||
468 ibp->mkeyprot == 0)
469 pip->mkey = ibp->mkey;
470 pip->gid_prefix = ibp->gid_prefix;
471 lid = ppd->lid;
472 pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
473 pip->sm_lid = cpu_to_be16(ibp->sm_lid);
474 pip->cap_mask = cpu_to_be32(ibp->port_cap_flags);
475 /* pip->diag_code; */
476 pip->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period);
477 pip->local_port_num = port;
478 pip->link_width_enabled = ppd->link_width_enabled;
479 pip->link_width_supported = ppd->link_width_supported;
480 pip->link_width_active = ppd->link_width_active;
481 state = dd->f_iblink_state(ppd->lastibcstat);
482 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state;
483
484 pip->portphysstate_linkdown =
485 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) |
486 (get_linkdowndefaultstate(ppd) ? 1 : 2);
487 pip->mkeyprot_resv_lmc = (ibp->mkeyprot << 6) | ppd->lmc;
488 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) |
489 ppd->link_speed_enabled;
490 switch (ppd->ibmtu) {
491 default: /* something is wrong; fall through */
492 case 4096:
493 mtu = IB_MTU_4096;
494 break;
495 case 2048:
496 mtu = IB_MTU_2048;
497 break;
498 case 1024:
499 mtu = IB_MTU_1024;
500 break;
501 case 512:
502 mtu = IB_MTU_512;
503 break;
504 case 256:
505 mtu = IB_MTU_256;
506 break;
507 }
508 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->sm_sl;
509 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
510 pip->vl_high_limit = ibp->vl_high_limit;
511 pip->vl_arb_high_cap =
512 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP);
513 pip->vl_arb_low_cap =
514 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP);
515 /* InitTypeReply = 0 */
516 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096;
517 /* HCAs ignore VLStallCount and HOQLife */
518 /* pip->vlstallcnt_hoqlife; */
519 pip->operationalvl_pei_peo_fpi_fpo =
520 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4;
521 pip->mkey_violations = cpu_to_be16(ibp->mkey_violations);
522 /* P_KeyViolations are counted by hardware. */
523 pip->pkey_violations = cpu_to_be16(ibp->pkey_violations);
524 pip->qkey_violations = cpu_to_be16(ibp->qkey_violations);
525 /* Only the hardware GUID is supported for now */
526 pip->guid_cap = QIB_GUIDS_PER_PORT;
527 pip->clientrereg_resv_subnetto = ibp->subnet_timeout;
528 /* 32.768 usec. response time (guessing) */
529 pip->resv_resptimevalue = 3;
530 pip->localphyerrors_overrunerrors =
531 (get_phyerrthreshold(ppd) << 4) |
532 get_overrunthreshold(ppd);
533 /* pip->max_credit_hint; */
534 if (ibp->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) {
535 u32 v;
536
537 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY);
538 pip->link_roundtrip_latency[0] = v >> 16;
539 pip->link_roundtrip_latency[1] = v >> 8;
540 pip->link_roundtrip_latency[2] = v;
541 }
542
543 ret = reply(smp);
544
545 bail:
546 return ret;
547 }
548
549 /**
550 * get_pkeys - return the PKEY table
551 * @dd: the qlogic_ib device
552 * @port: the IB port number
553 * @pkeys: the pkey table is placed here
554 */
555 static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
556 {
557 struct qib_pportdata *ppd = dd->pport + port - 1;
558 /*
559 * always a kernel context, no locking needed.
560 * If we get here with ppd setup, no need to check
561 * that pd is valid.
562 */
563 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx];
564
565 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys));
566
567 return 0;
568 }
569
570 static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
571 u8 port)
572 {
573 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
574 u16 *p = (u16 *) smp->data;
575 __be16 *q = (__be16 *) smp->data;
576
577 /* 64 blocks of 32 16-bit P_Key entries */
578
579 memset(smp->data, 0, sizeof(smp->data));
580 if (startpx == 0) {
581 struct qib_devdata *dd = dd_from_ibdev(ibdev);
582 unsigned i, n = qib_get_npkeys(dd);
583
584 get_pkeys(dd, port, p);
585
586 for (i = 0; i < n; i++)
587 q[i] = cpu_to_be16(p[i]);
588 } else
589 smp->status |= IB_SMP_INVALID_FIELD;
590
591 return reply(smp);
592 }
593
594 static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
595 u8 port)
596 {
597 struct qib_devdata *dd = dd_from_ibdev(ibdev);
598 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
599 __be64 *p = (__be64 *) smp->data;
600 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
601
602 /* 32 blocks of 8 64-bit GUIDs per block */
603
604 if (startgx == 0 && pidx < dd->num_pports) {
605 struct qib_pportdata *ppd = dd->pport + pidx;
606 struct qib_ibport *ibp = &ppd->ibport_data;
607 unsigned i;
608
609 /* The first entry is read-only. */
610 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
611 ibp->guids[i - 1] = p[i];
612 } else
613 smp->status |= IB_SMP_INVALID_FIELD;
614
615 /* The only GUID we support is the first read-only entry. */
616 return subn_get_guidinfo(smp, ibdev, port);
617 }
618
619 /**
620 * subn_set_portinfo - set port information
621 * @smp: the incoming SM packet
622 * @ibdev: the infiniband device
623 * @port: the port on the device
624 *
625 * Set Portinfo (see ch. 14.2.5.6).
626 */
627 static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
628 u8 port)
629 {
630 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
631 struct ib_event event;
632 struct qib_devdata *dd;
633 struct qib_pportdata *ppd;
634 struct qib_ibport *ibp;
635 char clientrereg = 0;
636 unsigned long flags;
637 u16 lid, smlid;
638 u8 lwe;
639 u8 lse;
640 u8 state;
641 u8 vls;
642 u8 msl;
643 u16 lstate;
644 int ret, ore, mtu;
645 u32 port_num = be32_to_cpu(smp->attr_mod);
646
647 if (port_num == 0)
648 port_num = port;
649 else {
650 if (port_num > ibdev->phys_port_cnt)
651 goto err;
652 /* Port attributes can only be set on the receiving port */
653 if (port_num != port)
654 goto get_only;
655 }
656
657 dd = dd_from_ibdev(ibdev);
658 /* IB numbers ports from 1, hdw from 0 */
659 ppd = dd->pport + (port_num - 1);
660 ibp = &ppd->ibport_data;
661 event.device = ibdev;
662 event.element.port_num = port;
663
664 ibp->mkey = pip->mkey;
665 ibp->gid_prefix = pip->gid_prefix;
666 ibp->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
667
668 lid = be16_to_cpu(pip->lid);
669 /* Must be a valid unicast LID address. */
670 if (lid == 0 || lid >= QIB_MULTICAST_LID_BASE)
671 goto err;
672 if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) {
673 if (ppd->lid != lid)
674 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT);
675 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7))
676 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT);
677 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7);
678 event.event = IB_EVENT_LID_CHANGE;
679 ib_dispatch_event(&event);
680 }
681
682 smlid = be16_to_cpu(pip->sm_lid);
683 msl = pip->neighbormtu_mastersmsl & 0xF;
684 /* Must be a valid unicast LID address. */
685 if (smlid == 0 || smlid >= QIB_MULTICAST_LID_BASE)
686 goto err;
687 if (smlid != ibp->sm_lid || msl != ibp->sm_sl) {
688 spin_lock_irqsave(&ibp->lock, flags);
689 if (ibp->sm_ah) {
690 if (smlid != ibp->sm_lid)
691 ibp->sm_ah->attr.dlid = smlid;
692 if (msl != ibp->sm_sl)
693 ibp->sm_ah->attr.sl = msl;
694 }
695 spin_unlock_irqrestore(&ibp->lock, flags);
696 if (smlid != ibp->sm_lid)
697 ibp->sm_lid = smlid;
698 if (msl != ibp->sm_sl)
699 ibp->sm_sl = msl;
700 event.event = IB_EVENT_SM_CHANGE;
701 ib_dispatch_event(&event);
702 }
703
704 /* Allow 1x or 4x to be set (see 14.2.6.6). */
705 lwe = pip->link_width_enabled;
706 if (lwe) {
707 if (lwe == 0xFF)
708 lwe = ppd->link_width_supported;
709 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported))
710 goto err;
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 lse = ppd->link_speed_supported;
723 else if (lse >= 8 || (lse & ~ppd->link_speed_supported))
724 goto err;
725 set_link_speed_enabled(ppd, lse);
726 }
727
728 /* Set link down default state. */
729 switch (pip->portphysstate_linkdown & 0xF) {
730 case 0: /* NOP */
731 break;
732 case 1: /* SLEEP */
733 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
734 IB_LINKINITCMD_SLEEP);
735 break;
736 case 2: /* POLL */
737 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
738 IB_LINKINITCMD_POLL);
739 break;
740 default:
741 goto err;
742 }
743
744 ibp->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
745 ibp->vl_high_limit = pip->vl_high_limit;
746 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
747 ibp->vl_high_limit);
748
749 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF);
750 if (mtu == -1)
751 goto err;
752 qib_set_mtu(ppd, mtu);
753
754 /* Set operational VLs */
755 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF;
756 if (vls) {
757 if (vls > ppd->vls_supported)
758 goto err;
759 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls);
760 }
761
762 if (pip->mkey_violations == 0)
763 ibp->mkey_violations = 0;
764
765 if (pip->pkey_violations == 0)
766 ibp->pkey_violations = 0;
767
768 if (pip->qkey_violations == 0)
769 ibp->qkey_violations = 0;
770
771 ore = pip->localphyerrors_overrunerrors;
772 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF))
773 goto err;
774
775 if (set_overrunthreshold(ppd, (ore & 0xF)))
776 goto err;
777
778 ibp->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
779
780 if (pip->clientrereg_resv_subnetto & 0x80) {
781 clientrereg = 1;
782 event.event = IB_EVENT_CLIENT_REREGISTER;
783 ib_dispatch_event(&event);
784 }
785
786 /*
787 * Do the port state change now that the other link parameters
788 * have been set.
789 * Changing the port physical state only makes sense if the link
790 * is down or is being set to down.
791 */
792 state = pip->linkspeed_portstate & 0xF;
793 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
794 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
795 goto err;
796
797 /*
798 * Only state changes of DOWN, ARM, and ACTIVE are valid
799 * and must be in the correct state to take effect (see 7.2.6).
800 */
801 switch (state) {
802 case IB_PORT_NOP:
803 if (lstate == 0)
804 break;
805 /* FALLTHROUGH */
806 case IB_PORT_DOWN:
807 if (lstate == 0)
808 lstate = QIB_IB_LINKDOWN_ONLY;
809 else if (lstate == 1)
810 lstate = QIB_IB_LINKDOWN_SLEEP;
811 else if (lstate == 2)
812 lstate = QIB_IB_LINKDOWN;
813 else if (lstate == 3)
814 lstate = QIB_IB_LINKDOWN_DISABLE;
815 else
816 goto err;
817 spin_lock_irqsave(&ppd->lflags_lock, flags);
818 ppd->lflags &= ~QIBL_LINKV;
819 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
820 qib_set_linkstate(ppd, lstate);
821 /*
822 * Don't send a reply if the response would be sent
823 * through the disabled port.
824 */
825 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) {
826 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
827 goto done;
828 }
829 qib_wait_linkstate(ppd, QIBL_LINKV, 10);
830 break;
831 case IB_PORT_ARMED:
832 qib_set_linkstate(ppd, QIB_IB_LINKARM);
833 break;
834 case IB_PORT_ACTIVE:
835 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE);
836 break;
837 default:
838 /* XXX We have already partially updated our state! */
839 goto err;
840 }
841
842 ret = subn_get_portinfo(smp, ibdev, port);
843
844 if (clientrereg)
845 pip->clientrereg_resv_subnetto |= 0x80;
846
847 goto done;
848
849 err:
850 smp->status |= IB_SMP_INVALID_FIELD;
851 get_only:
852 ret = subn_get_portinfo(smp, ibdev, port);
853 done:
854 return ret;
855 }
856
857 /**
858 * rm_pkey - decrecment the reference count for the given PKEY
859 * @dd: the qlogic_ib device
860 * @key: the PKEY index
861 *
862 * Return true if this was the last reference and the hardware table entry
863 * needs to be changed.
864 */
865 static int rm_pkey(struct qib_pportdata *ppd, u16 key)
866 {
867 int i;
868 int ret;
869
870 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
871 if (ppd->pkeys[i] != key)
872 continue;
873 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) {
874 ppd->pkeys[i] = 0;
875 ret = 1;
876 goto bail;
877 }
878 break;
879 }
880
881 ret = 0;
882
883 bail:
884 return ret;
885 }
886
887 /**
888 * add_pkey - add the given PKEY to the hardware table
889 * @dd: the qlogic_ib device
890 * @key: the PKEY
891 *
892 * Return an error code if unable to add the entry, zero if no change,
893 * or 1 if the hardware PKEY register needs to be updated.
894 */
895 static int add_pkey(struct qib_pportdata *ppd, u16 key)
896 {
897 int i;
898 u16 lkey = key & 0x7FFF;
899 int any = 0;
900 int ret;
901
902 if (lkey == 0x7FFF) {
903 ret = 0;
904 goto bail;
905 }
906
907 /* Look for an empty slot or a matching PKEY. */
908 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
909 if (!ppd->pkeys[i]) {
910 any++;
911 continue;
912 }
913 /* If it matches exactly, try to increment the ref count */
914 if (ppd->pkeys[i] == key) {
915 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) {
916 ret = 0;
917 goto bail;
918 }
919 /* Lost the race. Look for an empty slot below. */
920 atomic_dec(&ppd->pkeyrefs[i]);
921 any++;
922 }
923 /*
924 * It makes no sense to have both the limited and unlimited
925 * PKEY set at the same time since the unlimited one will
926 * disable the limited one.
927 */
928 if ((ppd->pkeys[i] & 0x7FFF) == lkey) {
929 ret = -EEXIST;
930 goto bail;
931 }
932 }
933 if (!any) {
934 ret = -EBUSY;
935 goto bail;
936 }
937 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
938 if (!ppd->pkeys[i] &&
939 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) {
940 /* for qibstats, etc. */
941 ppd->pkeys[i] = key;
942 ret = 1;
943 goto bail;
944 }
945 }
946 ret = -EBUSY;
947
948 bail:
949 return ret;
950 }
951
952 /**
953 * set_pkeys - set the PKEY table for ctxt 0
954 * @dd: the qlogic_ib device
955 * @port: the IB port number
956 * @pkeys: the PKEY table
957 */
958 static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
959 {
960 struct qib_pportdata *ppd;
961 struct qib_ctxtdata *rcd;
962 int i;
963 int changed = 0;
964
965 /*
966 * IB port one/two always maps to context zero/one,
967 * always a kernel context, no locking needed
968 * If we get here with ppd setup, no need to check
969 * that rcd is valid.
970 */
971 ppd = dd->pport + (port - 1);
972 rcd = dd->rcd[ppd->hw_pidx];
973
974 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) {
975 u16 key = pkeys[i];
976 u16 okey = rcd->pkeys[i];
977
978 if (key == okey)
979 continue;
980 /*
981 * The value of this PKEY table entry is changing.
982 * Remove the old entry in the hardware's array of PKEYs.
983 */
984 if (okey & 0x7FFF)
985 changed |= rm_pkey(ppd, okey);
986 if (key & 0x7FFF) {
987 int ret = add_pkey(ppd, key);
988
989 if (ret < 0)
990 key = 0;
991 else
992 changed |= ret;
993 }
994 rcd->pkeys[i] = key;
995 }
996 if (changed) {
997 struct ib_event event;
998
999 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0);
1000
1001 event.event = IB_EVENT_PKEY_CHANGE;
1002 event.device = &dd->verbs_dev.ibdev;
1003 event.element.port_num = 1;
1004 ib_dispatch_event(&event);
1005 }
1006 return 0;
1007 }
1008
1009 static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
1010 u8 port)
1011 {
1012 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
1013 __be16 *p = (__be16 *) smp->data;
1014 u16 *q = (u16 *) smp->data;
1015 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1016 unsigned i, n = qib_get_npkeys(dd);
1017
1018 for (i = 0; i < n; i++)
1019 q[i] = be16_to_cpu(p[i]);
1020
1021 if (startpx != 0 || set_pkeys(dd, port, q) != 0)
1022 smp->status |= IB_SMP_INVALID_FIELD;
1023
1024 return subn_get_pkeytable(smp, ibdev, port);
1025 }
1026
1027 static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1028 u8 port)
1029 {
1030 struct qib_ibport *ibp = to_iport(ibdev, port);
1031 u8 *p = (u8 *) smp->data;
1032 unsigned i;
1033
1034 memset(smp->data, 0, sizeof(smp->data));
1035
1036 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP))
1037 smp->status |= IB_SMP_UNSUP_METHOD;
1038 else
1039 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2)
1040 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1];
1041
1042 return reply(smp);
1043 }
1044
1045 static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1046 u8 port)
1047 {
1048 struct qib_ibport *ibp = to_iport(ibdev, port);
1049 u8 *p = (u8 *) smp->data;
1050 unsigned i;
1051
1052 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) {
1053 smp->status |= IB_SMP_UNSUP_METHOD;
1054 return reply(smp);
1055 }
1056
1057 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) {
1058 ibp->sl_to_vl[i] = *p >> 4;
1059 ibp->sl_to_vl[i + 1] = *p & 0xF;
1060 }
1061 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)),
1062 _QIB_EVENT_SL2VL_CHANGE_BIT);
1063
1064 return subn_get_sl_to_vl(smp, ibdev, port);
1065 }
1066
1067 static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1068 u8 port)
1069 {
1070 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1071 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1072
1073 memset(smp->data, 0, sizeof(smp->data));
1074
1075 if (ppd->vls_supported == IB_VL_VL0)
1076 smp->status |= IB_SMP_UNSUP_METHOD;
1077 else if (which == IB_VLARB_LOWPRI_0_31)
1078 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1079 smp->data);
1080 else if (which == IB_VLARB_HIGHPRI_0_31)
1081 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1082 smp->data);
1083 else
1084 smp->status |= IB_SMP_INVALID_FIELD;
1085
1086 return reply(smp);
1087 }
1088
1089 static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1090 u8 port)
1091 {
1092 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1093 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1094
1095 if (ppd->vls_supported == IB_VL_VL0)
1096 smp->status |= IB_SMP_UNSUP_METHOD;
1097 else if (which == IB_VLARB_LOWPRI_0_31)
1098 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1099 smp->data);
1100 else if (which == IB_VLARB_HIGHPRI_0_31)
1101 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1102 smp->data);
1103 else
1104 smp->status |= IB_SMP_INVALID_FIELD;
1105
1106 return subn_get_vl_arb(smp, ibdev, port);
1107 }
1108
1109 static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev,
1110 u8 port)
1111 {
1112 /*
1113 * For now, we only send the trap once so no need to process this.
1114 * o13-6, o13-7,
1115 * o14-3.a4 The SMA shall not send any message in response to a valid
1116 * SubnTrapRepress() message.
1117 */
1118 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1119 }
1120
1121 static int pma_get_classportinfo(struct ib_perf *pmp,
1122 struct ib_device *ibdev)
1123 {
1124 struct ib_pma_classportinfo *p =
1125 (struct ib_pma_classportinfo *)pmp->data;
1126 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1127
1128 memset(pmp->data, 0, sizeof(pmp->data));
1129
1130 if (pmp->attr_mod != 0)
1131 pmp->status |= IB_SMP_INVALID_FIELD;
1132
1133 /* Note that AllPortSelect is not valid */
1134 p->base_version = 1;
1135 p->class_version = 1;
1136 p->cap_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
1137 /*
1138 * Set the most significant bit of CM2 to indicate support for
1139 * congestion statistics
1140 */
1141 p->reserved[0] = dd->psxmitwait_supported << 7;
1142 /*
1143 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
1144 */
1145 p->resp_time_value = 18;
1146
1147 return reply((struct ib_smp *) pmp);
1148 }
1149
1150 static int pma_get_portsamplescontrol(struct ib_perf *pmp,
1151 struct ib_device *ibdev, u8 port)
1152 {
1153 struct ib_pma_portsamplescontrol *p =
1154 (struct ib_pma_portsamplescontrol *)pmp->data;
1155 struct qib_ibdev *dev = to_idev(ibdev);
1156 struct qib_devdata *dd = dd_from_dev(dev);
1157 struct qib_ibport *ibp = to_iport(ibdev, port);
1158 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1159 unsigned long flags;
1160 u8 port_select = p->port_select;
1161
1162 memset(pmp->data, 0, sizeof(pmp->data));
1163
1164 p->port_select = port_select;
1165 if (pmp->attr_mod != 0 || port_select != port) {
1166 pmp->status |= IB_SMP_INVALID_FIELD;
1167 goto bail;
1168 }
1169 spin_lock_irqsave(&ibp->lock, flags);
1170 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS);
1171 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1172 p->counter_width = 4; /* 32 bit counters */
1173 p->counter_mask0_9 = COUNTER_MASK0_9;
1174 p->sample_start = cpu_to_be32(ibp->pma_sample_start);
1175 p->sample_interval = cpu_to_be32(ibp->pma_sample_interval);
1176 p->tag = cpu_to_be16(ibp->pma_tag);
1177 p->counter_select[0] = ibp->pma_counter_select[0];
1178 p->counter_select[1] = ibp->pma_counter_select[1];
1179 p->counter_select[2] = ibp->pma_counter_select[2];
1180 p->counter_select[3] = ibp->pma_counter_select[3];
1181 p->counter_select[4] = ibp->pma_counter_select[4];
1182 spin_unlock_irqrestore(&ibp->lock, flags);
1183
1184 bail:
1185 return reply((struct ib_smp *) pmp);
1186 }
1187
1188 static int pma_set_portsamplescontrol(struct ib_perf *pmp,
1189 struct ib_device *ibdev, u8 port)
1190 {
1191 struct ib_pma_portsamplescontrol *p =
1192 (struct ib_pma_portsamplescontrol *)pmp->data;
1193 struct qib_ibdev *dev = to_idev(ibdev);
1194 struct qib_devdata *dd = dd_from_dev(dev);
1195 struct qib_ibport *ibp = to_iport(ibdev, port);
1196 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1197 unsigned long flags;
1198 u8 status, xmit_flags;
1199 int ret;
1200
1201 if (pmp->attr_mod != 0 || p->port_select != port) {
1202 pmp->status |= IB_SMP_INVALID_FIELD;
1203 ret = reply((struct ib_smp *) pmp);
1204 goto bail;
1205 }
1206
1207 spin_lock_irqsave(&ibp->lock, flags);
1208
1209 /* Port Sampling code owns the PS* HW counters */
1210 xmit_flags = ppd->cong_stats.flags;
1211 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE;
1212 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1213 if (status == IB_PMA_SAMPLE_STATUS_DONE ||
1214 (status == IB_PMA_SAMPLE_STATUS_RUNNING &&
1215 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) {
1216 ibp->pma_sample_start = be32_to_cpu(p->sample_start);
1217 ibp->pma_sample_interval = be32_to_cpu(p->sample_interval);
1218 ibp->pma_tag = be16_to_cpu(p->tag);
1219 ibp->pma_counter_select[0] = p->counter_select[0];
1220 ibp->pma_counter_select[1] = p->counter_select[1];
1221 ibp->pma_counter_select[2] = p->counter_select[2];
1222 ibp->pma_counter_select[3] = p->counter_select[3];
1223 ibp->pma_counter_select[4] = p->counter_select[4];
1224 dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval,
1225 ibp->pma_sample_start);
1226 }
1227 spin_unlock_irqrestore(&ibp->lock, flags);
1228
1229 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1230
1231 bail:
1232 return ret;
1233 }
1234
1235 static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd,
1236 __be16 sel)
1237 {
1238 u64 ret;
1239
1240 switch (sel) {
1241 case IB_PMA_PORT_XMIT_DATA:
1242 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA);
1243 break;
1244 case IB_PMA_PORT_RCV_DATA:
1245 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA);
1246 break;
1247 case IB_PMA_PORT_XMIT_PKTS:
1248 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS);
1249 break;
1250 case IB_PMA_PORT_RCV_PKTS:
1251 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS);
1252 break;
1253 case IB_PMA_PORT_XMIT_WAIT:
1254 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT);
1255 break;
1256 default:
1257 ret = 0;
1258 }
1259
1260 return ret;
1261 }
1262
1263 /* This function assumes that the xmit_wait lock is already held */
1264 static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd)
1265 {
1266 u32 delta;
1267
1268 delta = get_counter(&ppd->ibport_data, ppd,
1269 IB_PMA_PORT_XMIT_WAIT);
1270 return ppd->cong_stats.counter + delta;
1271 }
1272
1273 static void cache_hw_sample_counters(struct qib_pportdata *ppd)
1274 {
1275 struct qib_ibport *ibp = &ppd->ibport_data;
1276
1277 ppd->cong_stats.counter_cache.psxmitdata =
1278 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA);
1279 ppd->cong_stats.counter_cache.psrcvdata =
1280 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA);
1281 ppd->cong_stats.counter_cache.psxmitpkts =
1282 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS);
1283 ppd->cong_stats.counter_cache.psrcvpkts =
1284 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS);
1285 ppd->cong_stats.counter_cache.psxmitwait =
1286 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT);
1287 }
1288
1289 static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd,
1290 __be16 sel)
1291 {
1292 u64 ret;
1293
1294 switch (sel) {
1295 case IB_PMA_PORT_XMIT_DATA:
1296 ret = ppd->cong_stats.counter_cache.psxmitdata;
1297 break;
1298 case IB_PMA_PORT_RCV_DATA:
1299 ret = ppd->cong_stats.counter_cache.psrcvdata;
1300 break;
1301 case IB_PMA_PORT_XMIT_PKTS:
1302 ret = ppd->cong_stats.counter_cache.psxmitpkts;
1303 break;
1304 case IB_PMA_PORT_RCV_PKTS:
1305 ret = ppd->cong_stats.counter_cache.psrcvpkts;
1306 break;
1307 case IB_PMA_PORT_XMIT_WAIT:
1308 ret = ppd->cong_stats.counter_cache.psxmitwait;
1309 break;
1310 default:
1311 ret = 0;
1312 }
1313
1314 return ret;
1315 }
1316
1317 static int pma_get_portsamplesresult(struct ib_perf *pmp,
1318 struct ib_device *ibdev, u8 port)
1319 {
1320 struct ib_pma_portsamplesresult *p =
1321 (struct ib_pma_portsamplesresult *)pmp->data;
1322 struct qib_ibdev *dev = to_idev(ibdev);
1323 struct qib_devdata *dd = dd_from_dev(dev);
1324 struct qib_ibport *ibp = to_iport(ibdev, port);
1325 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1326 unsigned long flags;
1327 u8 status;
1328 int i;
1329
1330 memset(pmp->data, 0, sizeof(pmp->data));
1331 spin_lock_irqsave(&ibp->lock, flags);
1332 p->tag = cpu_to_be16(ibp->pma_tag);
1333 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1334 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1335 else {
1336 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1337 p->sample_status = cpu_to_be16(status);
1338 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1339 cache_hw_sample_counters(ppd);
1340 ppd->cong_stats.counter =
1341 xmit_wait_get_value_delta(ppd);
1342 dd->f_set_cntr_sample(ppd,
1343 QIB_CONG_TIMER_PSINTERVAL, 0);
1344 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1345 }
1346 }
1347 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1348 p->counter[i] = cpu_to_be32(
1349 get_cache_hw_sample_counters(
1350 ppd, ibp->pma_counter_select[i]));
1351 spin_unlock_irqrestore(&ibp->lock, flags);
1352
1353 return reply((struct ib_smp *) pmp);
1354 }
1355
1356 static int pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1357 struct ib_device *ibdev, u8 port)
1358 {
1359 struct ib_pma_portsamplesresult_ext *p =
1360 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1361 struct qib_ibdev *dev = to_idev(ibdev);
1362 struct qib_devdata *dd = dd_from_dev(dev);
1363 struct qib_ibport *ibp = to_iport(ibdev, port);
1364 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1365 unsigned long flags;
1366 u8 status;
1367 int i;
1368
1369 /* Port Sampling code owns the PS* HW counters */
1370 memset(pmp->data, 0, sizeof(pmp->data));
1371 spin_lock_irqsave(&ibp->lock, flags);
1372 p->tag = cpu_to_be16(ibp->pma_tag);
1373 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1374 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1375 else {
1376 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1377 p->sample_status = cpu_to_be16(status);
1378 /* 64 bits */
1379 p->extended_width = cpu_to_be32(0x80000000);
1380 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1381 cache_hw_sample_counters(ppd);
1382 ppd->cong_stats.counter =
1383 xmit_wait_get_value_delta(ppd);
1384 dd->f_set_cntr_sample(ppd,
1385 QIB_CONG_TIMER_PSINTERVAL, 0);
1386 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1387 }
1388 }
1389 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++)
1390 p->counter[i] = cpu_to_be64(
1391 get_cache_hw_sample_counters(
1392 ppd, ibp->pma_counter_select[i]));
1393 spin_unlock_irqrestore(&ibp->lock, flags);
1394
1395 return reply((struct ib_smp *) pmp);
1396 }
1397
1398 static int pma_get_portcounters(struct ib_perf *pmp,
1399 struct ib_device *ibdev, u8 port)
1400 {
1401 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1402 pmp->data;
1403 struct qib_ibport *ibp = to_iport(ibdev, port);
1404 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1405 struct qib_verbs_counters cntrs;
1406 u8 port_select = p->port_select;
1407
1408 qib_get_counters(ppd, &cntrs);
1409
1410 /* Adjust counters for any resets done. */
1411 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1412 cntrs.link_error_recovery_counter -=
1413 ibp->z_link_error_recovery_counter;
1414 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1415 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1416 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors;
1417 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1418 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1419 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1420 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1421 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1422 cntrs.local_link_integrity_errors -=
1423 ibp->z_local_link_integrity_errors;
1424 cntrs.excessive_buffer_overrun_errors -=
1425 ibp->z_excessive_buffer_overrun_errors;
1426 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1427 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1428
1429 memset(pmp->data, 0, sizeof(pmp->data));
1430
1431 p->port_select = port_select;
1432 if (pmp->attr_mod != 0 || port_select != port)
1433 pmp->status |= IB_SMP_INVALID_FIELD;
1434
1435 if (cntrs.symbol_error_counter > 0xFFFFUL)
1436 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1437 else
1438 p->symbol_error_counter =
1439 cpu_to_be16((u16)cntrs.symbol_error_counter);
1440 if (cntrs.link_error_recovery_counter > 0xFFUL)
1441 p->link_error_recovery_counter = 0xFF;
1442 else
1443 p->link_error_recovery_counter =
1444 (u8)cntrs.link_error_recovery_counter;
1445 if (cntrs.link_downed_counter > 0xFFUL)
1446 p->link_downed_counter = 0xFF;
1447 else
1448 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1449 if (cntrs.port_rcv_errors > 0xFFFFUL)
1450 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1451 else
1452 p->port_rcv_errors =
1453 cpu_to_be16((u16) cntrs.port_rcv_errors);
1454 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1455 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1456 else
1457 p->port_rcv_remphys_errors =
1458 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1459 if (cntrs.port_xmit_discards > 0xFFFFUL)
1460 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1461 else
1462 p->port_xmit_discards =
1463 cpu_to_be16((u16)cntrs.port_xmit_discards);
1464 if (cntrs.local_link_integrity_errors > 0xFUL)
1465 cntrs.local_link_integrity_errors = 0xFUL;
1466 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1467 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1468 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1469 cntrs.excessive_buffer_overrun_errors;
1470 if (cntrs.vl15_dropped > 0xFFFFUL)
1471 p->vl15_dropped = cpu_to_be16(0xFFFF);
1472 else
1473 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1474 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1475 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF);
1476 else
1477 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1478 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1479 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF);
1480 else
1481 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1482 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1483 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF);
1484 else
1485 p->port_xmit_packets =
1486 cpu_to_be32((u32)cntrs.port_xmit_packets);
1487 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1488 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF);
1489 else
1490 p->port_rcv_packets =
1491 cpu_to_be32((u32) cntrs.port_rcv_packets);
1492
1493 return reply((struct ib_smp *) pmp);
1494 }
1495
1496 static int pma_get_portcounters_cong(struct ib_perf *pmp,
1497 struct ib_device *ibdev, u8 port)
1498 {
1499 /* Congestion PMA packets start at offset 24 not 64 */
1500 struct ib_pma_portcounters_cong *p =
1501 (struct ib_pma_portcounters_cong *)pmp->reserved;
1502 struct qib_verbs_counters cntrs;
1503 struct qib_ibport *ibp = to_iport(ibdev, port);
1504 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1505 struct qib_devdata *dd = dd_from_ppd(ppd);
1506 u32 port_select = be32_to_cpu(pmp->attr_mod) & 0xFF;
1507 u64 xmit_wait_counter;
1508 unsigned long flags;
1509
1510 /*
1511 * This check is performed only in the GET method because the
1512 * SET method ends up calling this anyway.
1513 */
1514 if (!dd->psxmitwait_supported)
1515 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1516 if (port_select != port)
1517 pmp->status |= IB_SMP_INVALID_FIELD;
1518
1519 qib_get_counters(ppd, &cntrs);
1520 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1521 xmit_wait_counter = xmit_wait_get_value_delta(ppd);
1522 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1523
1524 /* Adjust counters for any resets done. */
1525 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1526 cntrs.link_error_recovery_counter -=
1527 ibp->z_link_error_recovery_counter;
1528 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1529 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1530 cntrs.port_rcv_remphys_errors -=
1531 ibp->z_port_rcv_remphys_errors;
1532 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1533 cntrs.local_link_integrity_errors -=
1534 ibp->z_local_link_integrity_errors;
1535 cntrs.excessive_buffer_overrun_errors -=
1536 ibp->z_excessive_buffer_overrun_errors;
1537 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1538 cntrs.vl15_dropped += ibp->n_vl15_dropped;
1539 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1540 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1541 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1542 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1543
1544 memset(pmp->reserved, 0, sizeof(pmp->reserved) +
1545 sizeof(pmp->data));
1546
1547 /*
1548 * Set top 3 bits to indicate interval in picoseconds in
1549 * remaining bits.
1550 */
1551 p->port_check_rate =
1552 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) |
1553 (dd->psxmitwait_check_rate &
1554 ~(QIB_XMIT_RATE_PICO << 13)));
1555 p->port_adr_events = cpu_to_be64(0);
1556 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter);
1557 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data);
1558 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data);
1559 p->port_xmit_packets =
1560 cpu_to_be64(cntrs.port_xmit_packets);
1561 p->port_rcv_packets =
1562 cpu_to_be64(cntrs.port_rcv_packets);
1563 if (cntrs.symbol_error_counter > 0xFFFFUL)
1564 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1565 else
1566 p->symbol_error_counter =
1567 cpu_to_be16(
1568 (u16)cntrs.symbol_error_counter);
1569 if (cntrs.link_error_recovery_counter > 0xFFUL)
1570 p->link_error_recovery_counter = 0xFF;
1571 else
1572 p->link_error_recovery_counter =
1573 (u8)cntrs.link_error_recovery_counter;
1574 if (cntrs.link_downed_counter > 0xFFUL)
1575 p->link_downed_counter = 0xFF;
1576 else
1577 p->link_downed_counter =
1578 (u8)cntrs.link_downed_counter;
1579 if (cntrs.port_rcv_errors > 0xFFFFUL)
1580 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1581 else
1582 p->port_rcv_errors =
1583 cpu_to_be16((u16) cntrs.port_rcv_errors);
1584 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1585 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1586 else
1587 p->port_rcv_remphys_errors =
1588 cpu_to_be16(
1589 (u16)cntrs.port_rcv_remphys_errors);
1590 if (cntrs.port_xmit_discards > 0xFFFFUL)
1591 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1592 else
1593 p->port_xmit_discards =
1594 cpu_to_be16((u16)cntrs.port_xmit_discards);
1595 if (cntrs.local_link_integrity_errors > 0xFUL)
1596 cntrs.local_link_integrity_errors = 0xFUL;
1597 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1598 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1599 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1600 cntrs.excessive_buffer_overrun_errors;
1601 if (cntrs.vl15_dropped > 0xFFFFUL)
1602 p->vl15_dropped = cpu_to_be16(0xFFFF);
1603 else
1604 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1605
1606 return reply((struct ib_smp *)pmp);
1607 }
1608
1609 static int pma_get_portcounters_ext(struct ib_perf *pmp,
1610 struct ib_device *ibdev, u8 port)
1611 {
1612 struct ib_pma_portcounters_ext *p =
1613 (struct ib_pma_portcounters_ext *)pmp->data;
1614 struct qib_ibport *ibp = to_iport(ibdev, port);
1615 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1616 u64 swords, rwords, spkts, rpkts, xwait;
1617 u8 port_select = p->port_select;
1618
1619 memset(pmp->data, 0, sizeof(pmp->data));
1620
1621 p->port_select = port_select;
1622 if (pmp->attr_mod != 0 || port_select != port) {
1623 pmp->status |= IB_SMP_INVALID_FIELD;
1624 goto bail;
1625 }
1626
1627 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1628
1629 /* Adjust counters for any resets done. */
1630 swords -= ibp->z_port_xmit_data;
1631 rwords -= ibp->z_port_rcv_data;
1632 spkts -= ibp->z_port_xmit_packets;
1633 rpkts -= ibp->z_port_rcv_packets;
1634
1635 p->port_xmit_data = cpu_to_be64(swords);
1636 p->port_rcv_data = cpu_to_be64(rwords);
1637 p->port_xmit_packets = cpu_to_be64(spkts);
1638 p->port_rcv_packets = cpu_to_be64(rpkts);
1639 p->port_unicast_xmit_packets = cpu_to_be64(ibp->n_unicast_xmit);
1640 p->port_unicast_rcv_packets = cpu_to_be64(ibp->n_unicast_rcv);
1641 p->port_multicast_xmit_packets = cpu_to_be64(ibp->n_multicast_xmit);
1642 p->port_multicast_rcv_packets = cpu_to_be64(ibp->n_multicast_rcv);
1643
1644 bail:
1645 return reply((struct ib_smp *) pmp);
1646 }
1647
1648 static int pma_set_portcounters(struct ib_perf *pmp,
1649 struct ib_device *ibdev, u8 port)
1650 {
1651 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1652 pmp->data;
1653 struct qib_ibport *ibp = to_iport(ibdev, port);
1654 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1655 struct qib_verbs_counters cntrs;
1656
1657 /*
1658 * Since the HW doesn't support clearing counters, we save the
1659 * current count and subtract it from future responses.
1660 */
1661 qib_get_counters(ppd, &cntrs);
1662
1663 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1664 ibp->z_symbol_error_counter = cntrs.symbol_error_counter;
1665
1666 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1667 ibp->z_link_error_recovery_counter =
1668 cntrs.link_error_recovery_counter;
1669
1670 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1671 ibp->z_link_downed_counter = cntrs.link_downed_counter;
1672
1673 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1674 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1675
1676 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1677 ibp->z_port_rcv_remphys_errors =
1678 cntrs.port_rcv_remphys_errors;
1679
1680 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1681 ibp->z_port_xmit_discards = cntrs.port_xmit_discards;
1682
1683 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1684 ibp->z_local_link_integrity_errors =
1685 cntrs.local_link_integrity_errors;
1686
1687 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1688 ibp->z_excessive_buffer_overrun_errors =
1689 cntrs.excessive_buffer_overrun_errors;
1690
1691 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
1692 ibp->n_vl15_dropped = 0;
1693 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1694 }
1695
1696 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1697 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1698
1699 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1700 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1701
1702 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1703 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1704
1705 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1706 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1707
1708 return pma_get_portcounters(pmp, ibdev, port);
1709 }
1710
1711 static int pma_set_portcounters_cong(struct ib_perf *pmp,
1712 struct ib_device *ibdev, u8 port)
1713 {
1714 struct qib_ibport *ibp = to_iport(ibdev, port);
1715 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1716 struct qib_devdata *dd = dd_from_ppd(ppd);
1717 struct qib_verbs_counters cntrs;
1718 u32 counter_select = (be32_to_cpu(pmp->attr_mod) >> 24) & 0xFF;
1719 int ret = 0;
1720 unsigned long flags;
1721
1722 qib_get_counters(ppd, &cntrs);
1723 /* Get counter values before we save them */
1724 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1725
1726 if (counter_select & IB_PMA_SEL_CONG_XMIT) {
1727 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
1728 ppd->cong_stats.counter = 0;
1729 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
1730 0x0);
1731 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
1732 }
1733 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) {
1734 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1735 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1736 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1737 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1738 }
1739 if (counter_select & IB_PMA_SEL_CONG_ALL) {
1740 ibp->z_symbol_error_counter =
1741 cntrs.symbol_error_counter;
1742 ibp->z_link_error_recovery_counter =
1743 cntrs.link_error_recovery_counter;
1744 ibp->z_link_downed_counter =
1745 cntrs.link_downed_counter;
1746 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1747 ibp->z_port_rcv_remphys_errors =
1748 cntrs.port_rcv_remphys_errors;
1749 ibp->z_port_xmit_discards =
1750 cntrs.port_xmit_discards;
1751 ibp->z_local_link_integrity_errors =
1752 cntrs.local_link_integrity_errors;
1753 ibp->z_excessive_buffer_overrun_errors =
1754 cntrs.excessive_buffer_overrun_errors;
1755 ibp->n_vl15_dropped = 0;
1756 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1757 }
1758
1759 return ret;
1760 }
1761
1762 static int pma_set_portcounters_ext(struct ib_perf *pmp,
1763 struct ib_device *ibdev, u8 port)
1764 {
1765 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1766 pmp->data;
1767 struct qib_ibport *ibp = to_iport(ibdev, port);
1768 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1769 u64 swords, rwords, spkts, rpkts, xwait;
1770
1771 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1772
1773 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1774 ibp->z_port_xmit_data = swords;
1775
1776 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1777 ibp->z_port_rcv_data = rwords;
1778
1779 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1780 ibp->z_port_xmit_packets = spkts;
1781
1782 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1783 ibp->z_port_rcv_packets = rpkts;
1784
1785 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1786 ibp->n_unicast_xmit = 0;
1787
1788 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1789 ibp->n_unicast_rcv = 0;
1790
1791 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1792 ibp->n_multicast_xmit = 0;
1793
1794 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1795 ibp->n_multicast_rcv = 0;
1796
1797 return pma_get_portcounters_ext(pmp, ibdev, port);
1798 }
1799
1800 static int process_subn(struct ib_device *ibdev, int mad_flags,
1801 u8 port, struct ib_mad *in_mad,
1802 struct ib_mad *out_mad)
1803 {
1804 struct ib_smp *smp = (struct ib_smp *)out_mad;
1805 struct qib_ibport *ibp = to_iport(ibdev, port);
1806 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1807 int ret;
1808
1809 *out_mad = *in_mad;
1810 if (smp->class_version != 1) {
1811 smp->status |= IB_SMP_UNSUP_VERSION;
1812 ret = reply(smp);
1813 goto bail;
1814 }
1815
1816 ret = check_mkey(ibp, smp, mad_flags);
1817 if (ret) {
1818 u32 port_num = be32_to_cpu(smp->attr_mod);
1819
1820 /*
1821 * If this is a get/set portinfo, we already check the
1822 * M_Key if the MAD is for another port and the M_Key
1823 * is OK on the receiving port. This check is needed
1824 * to increment the error counters when the M_Key
1825 * fails to match on *both* ports.
1826 */
1827 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
1828 (smp->method == IB_MGMT_METHOD_GET ||
1829 smp->method == IB_MGMT_METHOD_SET) &&
1830 port_num && port_num <= ibdev->phys_port_cnt &&
1831 port != port_num)
1832 (void) check_mkey(to_iport(ibdev, port_num), smp, 0);
1833 goto bail;
1834 }
1835
1836 switch (smp->method) {
1837 case IB_MGMT_METHOD_GET:
1838 switch (smp->attr_id) {
1839 case IB_SMP_ATTR_NODE_DESC:
1840 ret = subn_get_nodedescription(smp, ibdev);
1841 goto bail;
1842 case IB_SMP_ATTR_NODE_INFO:
1843 ret = subn_get_nodeinfo(smp, ibdev, port);
1844 goto bail;
1845 case IB_SMP_ATTR_GUID_INFO:
1846 ret = subn_get_guidinfo(smp, ibdev, port);
1847 goto bail;
1848 case IB_SMP_ATTR_PORT_INFO:
1849 ret = subn_get_portinfo(smp, ibdev, port);
1850 goto bail;
1851 case IB_SMP_ATTR_PKEY_TABLE:
1852 ret = subn_get_pkeytable(smp, ibdev, port);
1853 goto bail;
1854 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1855 ret = subn_get_sl_to_vl(smp, ibdev, port);
1856 goto bail;
1857 case IB_SMP_ATTR_VL_ARB_TABLE:
1858 ret = subn_get_vl_arb(smp, ibdev, port);
1859 goto bail;
1860 case IB_SMP_ATTR_SM_INFO:
1861 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1862 ret = IB_MAD_RESULT_SUCCESS |
1863 IB_MAD_RESULT_CONSUMED;
1864 goto bail;
1865 }
1866 if (ibp->port_cap_flags & IB_PORT_SM) {
1867 ret = IB_MAD_RESULT_SUCCESS;
1868 goto bail;
1869 }
1870 /* FALLTHROUGH */
1871 default:
1872 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1873 ret = reply(smp);
1874 goto bail;
1875 }
1876
1877 case IB_MGMT_METHOD_SET:
1878 switch (smp->attr_id) {
1879 case IB_SMP_ATTR_GUID_INFO:
1880 ret = subn_set_guidinfo(smp, ibdev, port);
1881 goto bail;
1882 case IB_SMP_ATTR_PORT_INFO:
1883 ret = subn_set_portinfo(smp, ibdev, port);
1884 goto bail;
1885 case IB_SMP_ATTR_PKEY_TABLE:
1886 ret = subn_set_pkeytable(smp, ibdev, port);
1887 goto bail;
1888 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1889 ret = subn_set_sl_to_vl(smp, ibdev, port);
1890 goto bail;
1891 case IB_SMP_ATTR_VL_ARB_TABLE:
1892 ret = subn_set_vl_arb(smp, ibdev, port);
1893 goto bail;
1894 case IB_SMP_ATTR_SM_INFO:
1895 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) {
1896 ret = IB_MAD_RESULT_SUCCESS |
1897 IB_MAD_RESULT_CONSUMED;
1898 goto bail;
1899 }
1900 if (ibp->port_cap_flags & IB_PORT_SM) {
1901 ret = IB_MAD_RESULT_SUCCESS;
1902 goto bail;
1903 }
1904 /* FALLTHROUGH */
1905 default:
1906 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1907 ret = reply(smp);
1908 goto bail;
1909 }
1910
1911 case IB_MGMT_METHOD_TRAP_REPRESS:
1912 if (smp->attr_id == IB_SMP_ATTR_NOTICE)
1913 ret = subn_trap_repress(smp, ibdev, port);
1914 else {
1915 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1916 ret = reply(smp);
1917 }
1918 goto bail;
1919
1920 case IB_MGMT_METHOD_TRAP:
1921 case IB_MGMT_METHOD_REPORT:
1922 case IB_MGMT_METHOD_REPORT_RESP:
1923 case IB_MGMT_METHOD_GET_RESP:
1924 /*
1925 * The ib_mad module will call us to process responses
1926 * before checking for other consumers.
1927 * Just tell the caller to process it normally.
1928 */
1929 ret = IB_MAD_RESULT_SUCCESS;
1930 goto bail;
1931
1932 case IB_MGMT_METHOD_SEND:
1933 if (ib_get_smp_direction(smp) &&
1934 smp->attr_id == QIB_VENDOR_IPG) {
1935 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT,
1936 smp->data[0]);
1937 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1938 } else
1939 ret = IB_MAD_RESULT_SUCCESS;
1940 goto bail;
1941
1942 default:
1943 smp->status |= IB_SMP_UNSUP_METHOD;
1944 ret = reply(smp);
1945 }
1946
1947 bail:
1948 return ret;
1949 }
1950
1951 static int process_perf(struct ib_device *ibdev, u8 port,
1952 struct ib_mad *in_mad,
1953 struct ib_mad *out_mad)
1954 {
1955 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1956 int ret;
1957
1958 *out_mad = *in_mad;
1959 if (pmp->class_version != 1) {
1960 pmp->status |= IB_SMP_UNSUP_VERSION;
1961 ret = reply((struct ib_smp *) pmp);
1962 goto bail;
1963 }
1964
1965 switch (pmp->method) {
1966 case IB_MGMT_METHOD_GET:
1967 switch (pmp->attr_id) {
1968 case IB_PMA_CLASS_PORT_INFO:
1969 ret = pma_get_classportinfo(pmp, ibdev);
1970 goto bail;
1971 case IB_PMA_PORT_SAMPLES_CONTROL:
1972 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1973 goto bail;
1974 case IB_PMA_PORT_SAMPLES_RESULT:
1975 ret = pma_get_portsamplesresult(pmp, ibdev, port);
1976 goto bail;
1977 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1978 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port);
1979 goto bail;
1980 case IB_PMA_PORT_COUNTERS:
1981 ret = pma_get_portcounters(pmp, ibdev, port);
1982 goto bail;
1983 case IB_PMA_PORT_COUNTERS_EXT:
1984 ret = pma_get_portcounters_ext(pmp, ibdev, port);
1985 goto bail;
1986 case IB_PMA_PORT_COUNTERS_CONG:
1987 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1988 goto bail;
1989 default:
1990 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1991 ret = reply((struct ib_smp *) pmp);
1992 goto bail;
1993 }
1994
1995 case IB_MGMT_METHOD_SET:
1996 switch (pmp->attr_id) {
1997 case IB_PMA_PORT_SAMPLES_CONTROL:
1998 ret = pma_set_portsamplescontrol(pmp, ibdev, port);
1999 goto bail;
2000 case IB_PMA_PORT_COUNTERS:
2001 ret = pma_set_portcounters(pmp, ibdev, port);
2002 goto bail;
2003 case IB_PMA_PORT_COUNTERS_EXT:
2004 ret = pma_set_portcounters_ext(pmp, ibdev, port);
2005 goto bail;
2006 case IB_PMA_PORT_COUNTERS_CONG:
2007 ret = pma_set_portcounters_cong(pmp, ibdev, port);
2008 goto bail;
2009 default:
2010 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
2011 ret = reply((struct ib_smp *) pmp);
2012 goto bail;
2013 }
2014
2015 case IB_MGMT_METHOD_TRAP:
2016 case IB_MGMT_METHOD_GET_RESP:
2017 /*
2018 * The ib_mad module will call us to process responses
2019 * before checking for other consumers.
2020 * Just tell the caller to process it normally.
2021 */
2022 ret = IB_MAD_RESULT_SUCCESS;
2023 goto bail;
2024
2025 default:
2026 pmp->status |= IB_SMP_UNSUP_METHOD;
2027 ret = reply((struct ib_smp *) pmp);
2028 }
2029
2030 bail:
2031 return ret;
2032 }
2033
2034 /**
2035 * qib_process_mad - process an incoming MAD packet
2036 * @ibdev: the infiniband device this packet came in on
2037 * @mad_flags: MAD flags
2038 * @port: the port number this packet came in on
2039 * @in_wc: the work completion entry for this packet
2040 * @in_grh: the global route header for this packet
2041 * @in_mad: the incoming MAD
2042 * @out_mad: any outgoing MAD reply
2043 *
2044 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
2045 * interested in processing.
2046 *
2047 * Note that the verbs framework has already done the MAD sanity checks,
2048 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
2049 * MADs.
2050 *
2051 * This is called by the ib_mad module.
2052 */
2053 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
2054 struct ib_wc *in_wc, struct ib_grh *in_grh,
2055 struct ib_mad *in_mad, struct ib_mad *out_mad)
2056 {
2057 int ret;
2058
2059 switch (in_mad->mad_hdr.mgmt_class) {
2060 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
2061 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
2062 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
2063 goto bail;
2064
2065 case IB_MGMT_CLASS_PERF_MGMT:
2066 ret = process_perf(ibdev, port, in_mad, out_mad);
2067 goto bail;
2068
2069 default:
2070 ret = IB_MAD_RESULT_SUCCESS;
2071 }
2072
2073 bail:
2074 return ret;
2075 }
2076
2077 static void send_handler(struct ib_mad_agent *agent,
2078 struct ib_mad_send_wc *mad_send_wc)
2079 {
2080 ib_free_send_mad(mad_send_wc->send_buf);
2081 }
2082
2083 static void xmit_wait_timer_func(unsigned long opaque)
2084 {
2085 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
2086 struct qib_devdata *dd = dd_from_ppd(ppd);
2087 unsigned long flags;
2088 u8 status;
2089
2090 spin_lock_irqsave(&ppd->ibport_data.lock, flags);
2091 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) {
2092 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
2093 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
2094 /* save counter cache */
2095 cache_hw_sample_counters(ppd);
2096 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
2097 } else
2098 goto done;
2099 }
2100 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd);
2101 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0);
2102 done:
2103 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags);
2104 mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
2105 }
2106
2107 int qib_create_agents(struct qib_ibdev *dev)
2108 {
2109 struct qib_devdata *dd = dd_from_dev(dev);
2110 struct ib_mad_agent *agent;
2111 struct qib_ibport *ibp;
2112 int p;
2113 int ret;
2114
2115 for (p = 0; p < dd->num_pports; p++) {
2116 ibp = &dd->pport[p].ibport_data;
2117 agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI,
2118 NULL, 0, send_handler,
2119 NULL, NULL);
2120 if (IS_ERR(agent)) {
2121 ret = PTR_ERR(agent);
2122 goto err;
2123 }
2124
2125 /* Initialize xmit_wait structure */
2126 dd->pport[p].cong_stats.counter = 0;
2127 init_timer(&dd->pport[p].cong_stats.timer);
2128 dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func;
2129 dd->pport[p].cong_stats.timer.data =
2130 (unsigned long)(&dd->pport[p]);
2131 dd->pport[p].cong_stats.timer.expires = 0;
2132 add_timer(&dd->pport[p].cong_stats.timer);
2133
2134 ibp->send_agent = agent;
2135 }
2136
2137 return 0;
2138
2139 err:
2140 for (p = 0; p < dd->num_pports; p++) {
2141 ibp = &dd->pport[p].ibport_data;
2142 if (ibp->send_agent) {
2143 agent = ibp->send_agent;
2144 ibp->send_agent = NULL;
2145 ib_unregister_mad_agent(agent);
2146 }
2147 }
2148
2149 return ret;
2150 }
2151
2152 void qib_free_agents(struct qib_ibdev *dev)
2153 {
2154 struct qib_devdata *dd = dd_from_dev(dev);
2155 struct ib_mad_agent *agent;
2156 struct qib_ibport *ibp;
2157 int p;
2158
2159 for (p = 0; p < dd->num_pports; p++) {
2160 ibp = &dd->pport[p].ibport_data;
2161 if (ibp->send_agent) {
2162 agent = ibp->send_agent;
2163 ibp->send_agent = NULL;
2164 ib_unregister_mad_agent(agent);
2165 }
2166 if (ibp->sm_ah) {
2167 ib_destroy_ah(&ibp->sm_ah->ibah);
2168 ibp->sm_ah = NULL;
2169 }
2170 if (dd->pport[p].cong_stats.timer.data)
2171 del_timer_sync(&dd->pport[p].cong_stats.timer);
2172 }
2173 }