1 /*
2 * Copyright (c) 2012 Intel Corporation. All rights reserved.
3 * Copyright (c) 2006 - 2012 QLogic Corporation. 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
reply(struct ib_smp * smp)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
reply_failure(struct ib_smp * smp)52 static int reply_failure(struct ib_smp *smp)
53 {
54 /*
55 * The verbs framework will handle the directed/LID route
56 * packet changes.
57 */
58 smp->method = IB_MGMT_METHOD_GET_RESP;
59 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
60 smp->status |= IB_SMP_DIRECTION;
61 return IB_MAD_RESULT_FAILURE | IB_MAD_RESULT_REPLY;
62 }
63
qib_send_trap(struct qib_ibport * ibp,void * data,unsigned len)64 static void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len)
65 {
66 struct ib_mad_send_buf *send_buf;
67 struct ib_mad_agent *agent;
68 struct ib_smp *smp;
69 int ret;
70 unsigned long flags;
71 unsigned long timeout;
72
73 agent = ibp->rvp.send_agent;
74 if (!agent)
75 return;
76
77 /* o14-3.2.1 */
78 if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE))
79 return;
80
81 /* o14-2 */
82 if (ibp->rvp.trap_timeout &&
83 time_before(jiffies, ibp->rvp.trap_timeout))
84 return;
85
86 send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
87 IB_MGMT_MAD_DATA, GFP_ATOMIC,
88 IB_MGMT_BASE_VERSION);
89 if (IS_ERR(send_buf))
90 return;
91
92 smp = send_buf->mad;
93 smp->base_version = IB_MGMT_BASE_VERSION;
94 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
95 smp->class_version = 1;
96 smp->method = IB_MGMT_METHOD_TRAP;
97 ibp->rvp.tid++;
98 smp->tid = cpu_to_be64(ibp->rvp.tid);
99 smp->attr_id = IB_SMP_ATTR_NOTICE;
100 /* o14-1: smp->mkey = 0; */
101 memcpy(smp->data, data, len);
102
103 spin_lock_irqsave(&ibp->rvp.lock, flags);
104 if (!ibp->rvp.sm_ah) {
105 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
106 struct ib_ah *ah;
107
108 ah = qib_create_qp0_ah(ibp, (u16)ibp->rvp.sm_lid);
109 if (IS_ERR(ah))
110 ret = PTR_ERR(ah);
111 else {
112 send_buf->ah = ah;
113 ibp->rvp.sm_ah = ibah_to_rvtah(ah);
114 ret = 0;
115 }
116 } else
117 ret = -EINVAL;
118 } else {
119 send_buf->ah = &ibp->rvp.sm_ah->ibah;
120 ret = 0;
121 }
122 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
123
124 if (!ret)
125 ret = ib_post_send_mad(send_buf, NULL);
126 if (!ret) {
127 /* 4.096 usec. */
128 timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000;
129 ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout);
130 } else {
131 ib_free_send_mad(send_buf);
132 ibp->rvp.trap_timeout = 0;
133 }
134 }
135
136 /*
137 * Send a bad P_Key trap (ch. 14.3.8).
138 */
qib_bad_pkey(struct qib_ibport * ibp,u32 key,u32 sl,u32 qp1,u32 qp2,__be16 lid1,__be16 lid2)139 void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
140 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
141 {
142 struct ib_mad_notice_attr data;
143
144 ibp->rvp.n_pkt_drops++;
145 ibp->rvp.pkey_violations++;
146
147 /* Send violation trap */
148 data.generic_type = IB_NOTICE_TYPE_SECURITY;
149 data.prod_type_msb = 0;
150 data.prod_type_lsb = IB_NOTICE_PROD_CA;
151 data.trap_num = IB_NOTICE_TRAP_BAD_PKEY;
152 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
153 data.toggle_count = 0;
154 memset(&data.details, 0, sizeof(data.details));
155 data.details.ntc_257_258.lid1 = lid1;
156 data.details.ntc_257_258.lid2 = lid2;
157 data.details.ntc_257_258.key = cpu_to_be32(key);
158 data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1);
159 data.details.ntc_257_258.qp2 = cpu_to_be32(qp2);
160
161 qib_send_trap(ibp, &data, sizeof(data));
162 }
163
164 /*
165 * Send a bad M_Key trap (ch. 14.3.9).
166 */
qib_bad_mkey(struct qib_ibport * ibp,struct ib_smp * smp)167 static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp)
168 {
169 struct ib_mad_notice_attr data;
170
171 /* Send violation trap */
172 data.generic_type = IB_NOTICE_TYPE_SECURITY;
173 data.prod_type_msb = 0;
174 data.prod_type_lsb = IB_NOTICE_PROD_CA;
175 data.trap_num = IB_NOTICE_TRAP_BAD_MKEY;
176 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
177 data.toggle_count = 0;
178 memset(&data.details, 0, sizeof(data.details));
179 data.details.ntc_256.lid = data.issuer_lid;
180 data.details.ntc_256.method = smp->method;
181 data.details.ntc_256.attr_id = smp->attr_id;
182 data.details.ntc_256.attr_mod = smp->attr_mod;
183 data.details.ntc_256.mkey = smp->mkey;
184 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
185 u8 hop_cnt;
186
187 data.details.ntc_256.dr_slid = smp->dr_slid;
188 data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
189 hop_cnt = smp->hop_cnt;
190 if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) {
191 data.details.ntc_256.dr_trunc_hop |=
192 IB_NOTICE_TRAP_DR_TRUNC;
193 hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path);
194 }
195 data.details.ntc_256.dr_trunc_hop |= hop_cnt;
196 memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path,
197 hop_cnt);
198 }
199
200 qib_send_trap(ibp, &data, sizeof(data));
201 }
202
203 /*
204 * Send a Port Capability Mask Changed trap (ch. 14.3.11).
205 */
qib_cap_mask_chg(struct rvt_dev_info * rdi,u8 port_num)206 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num)
207 {
208 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
209 struct qib_devdata *dd = dd_from_dev(ibdev);
210 struct qib_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
211 struct ib_mad_notice_attr data;
212
213 data.generic_type = IB_NOTICE_TYPE_INFO;
214 data.prod_type_msb = 0;
215 data.prod_type_lsb = IB_NOTICE_PROD_CA;
216 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG;
217 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
218 data.toggle_count = 0;
219 memset(&data.details, 0, sizeof(data.details));
220 data.details.ntc_144.lid = data.issuer_lid;
221 data.details.ntc_144.new_cap_mask =
222 cpu_to_be32(ibp->rvp.port_cap_flags);
223 qib_send_trap(ibp, &data, sizeof(data));
224 }
225
226 /*
227 * Send a System Image GUID Changed trap (ch. 14.3.12).
228 */
qib_sys_guid_chg(struct qib_ibport * ibp)229 void qib_sys_guid_chg(struct qib_ibport *ibp)
230 {
231 struct ib_mad_notice_attr data;
232
233 data.generic_type = IB_NOTICE_TYPE_INFO;
234 data.prod_type_msb = 0;
235 data.prod_type_lsb = IB_NOTICE_PROD_CA;
236 data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG;
237 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
238 data.toggle_count = 0;
239 memset(&data.details, 0, sizeof(data.details));
240 data.details.ntc_145.lid = data.issuer_lid;
241 data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid;
242
243 qib_send_trap(ibp, &data, sizeof(data));
244 }
245
246 /*
247 * Send a Node Description Changed trap (ch. 14.3.13).
248 */
qib_node_desc_chg(struct qib_ibport * ibp)249 void qib_node_desc_chg(struct qib_ibport *ibp)
250 {
251 struct ib_mad_notice_attr data;
252
253 data.generic_type = IB_NOTICE_TYPE_INFO;
254 data.prod_type_msb = 0;
255 data.prod_type_lsb = IB_NOTICE_PROD_CA;
256 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG;
257 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
258 data.toggle_count = 0;
259 memset(&data.details, 0, sizeof(data.details));
260 data.details.ntc_144.lid = data.issuer_lid;
261 data.details.ntc_144.local_changes = 1;
262 data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG;
263
264 qib_send_trap(ibp, &data, sizeof(data));
265 }
266
subn_get_nodedescription(struct ib_smp * smp,struct ib_device * ibdev)267 static int subn_get_nodedescription(struct ib_smp *smp,
268 struct ib_device *ibdev)
269 {
270 if (smp->attr_mod)
271 smp->status |= IB_SMP_INVALID_FIELD;
272
273 memcpy(smp->data, ibdev->node_desc, sizeof(smp->data));
274
275 return reply(smp);
276 }
277
subn_get_nodeinfo(struct ib_smp * smp,struct ib_device * ibdev,u8 port)278 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
279 u8 port)
280 {
281 struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
282 struct qib_devdata *dd = dd_from_ibdev(ibdev);
283 u32 majrev, minrev;
284 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
285
286 /* GUID 0 is illegal */
287 if (smp->attr_mod || pidx >= dd->num_pports ||
288 dd->pport[pidx].guid == 0)
289 smp->status |= IB_SMP_INVALID_FIELD;
290 else
291 nip->port_guid = dd->pport[pidx].guid;
292
293 nip->base_version = 1;
294 nip->class_version = 1;
295 nip->node_type = 1; /* channel adapter */
296 nip->num_ports = ibdev->phys_port_cnt;
297 /* This is already in network order */
298 nip->sys_guid = ib_qib_sys_image_guid;
299 nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */
300 nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd));
301 nip->device_id = cpu_to_be16(dd->deviceid);
302 majrev = dd->majrev;
303 minrev = dd->minrev;
304 nip->revision = cpu_to_be32((majrev << 16) | minrev);
305 nip->local_port_num = port;
306 nip->vendor_id[0] = QIB_SRC_OUI_1;
307 nip->vendor_id[1] = QIB_SRC_OUI_2;
308 nip->vendor_id[2] = QIB_SRC_OUI_3;
309
310 return reply(smp);
311 }
312
subn_get_guidinfo(struct ib_smp * smp,struct ib_device * ibdev,u8 port)313 static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
314 u8 port)
315 {
316 struct qib_devdata *dd = dd_from_ibdev(ibdev);
317 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
318 __be64 *p = (__be64 *) smp->data;
319 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
320
321 /* 32 blocks of 8 64-bit GUIDs per block */
322
323 memset(smp->data, 0, sizeof(smp->data));
324
325 if (startgx == 0 && pidx < dd->num_pports) {
326 struct qib_pportdata *ppd = dd->pport + pidx;
327 struct qib_ibport *ibp = &ppd->ibport_data;
328 __be64 g = ppd->guid;
329 unsigned i;
330
331 /* GUID 0 is illegal */
332 if (g == 0)
333 smp->status |= IB_SMP_INVALID_FIELD;
334 else {
335 /* The first is a copy of the read-only HW GUID. */
336 p[0] = g;
337 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
338 p[i] = ibp->guids[i - 1];
339 }
340 } else
341 smp->status |= IB_SMP_INVALID_FIELD;
342
343 return reply(smp);
344 }
345
set_link_width_enabled(struct qib_pportdata * ppd,u32 w)346 static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w)
347 {
348 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w);
349 }
350
set_link_speed_enabled(struct qib_pportdata * ppd,u32 s)351 static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s)
352 {
353 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s);
354 }
355
get_overrunthreshold(struct qib_pportdata * ppd)356 static int get_overrunthreshold(struct qib_pportdata *ppd)
357 {
358 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH);
359 }
360
361 /**
362 * set_overrunthreshold - set the overrun threshold
363 * @ppd: the physical port data
364 * @n: the new threshold
365 *
366 * Note that this will only take effect when the link state changes.
367 */
set_overrunthreshold(struct qib_pportdata * ppd,unsigned n)368 static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n)
369 {
370 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH,
371 (u32)n);
372 return 0;
373 }
374
get_phyerrthreshold(struct qib_pportdata * ppd)375 static int get_phyerrthreshold(struct qib_pportdata *ppd)
376 {
377 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH);
378 }
379
380 /**
381 * set_phyerrthreshold - set the physical error threshold
382 * @ppd: the physical port data
383 * @n: the new threshold
384 *
385 * Note that this will only take effect when the link state changes.
386 */
set_phyerrthreshold(struct qib_pportdata * ppd,unsigned n)387 static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n)
388 {
389 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH,
390 (u32)n);
391 return 0;
392 }
393
394 /**
395 * get_linkdowndefaultstate - get the default linkdown state
396 * @ppd: the physical port data
397 *
398 * Returns zero if the default is POLL, 1 if the default is SLEEP.
399 */
get_linkdowndefaultstate(struct qib_pportdata * ppd)400 static int get_linkdowndefaultstate(struct qib_pportdata *ppd)
401 {
402 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) ==
403 IB_LINKINITCMD_SLEEP;
404 }
405
check_mkey(struct qib_ibport * ibp,struct ib_smp * smp,int mad_flags)406 static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags)
407 {
408 int valid_mkey = 0;
409 int ret = 0;
410
411 /* Is the mkey in the process of expiring? */
412 if (ibp->rvp.mkey_lease_timeout &&
413 time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
414 /* Clear timeout and mkey protection field. */
415 ibp->rvp.mkey_lease_timeout = 0;
416 ibp->rvp.mkeyprot = 0;
417 }
418
419 if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->rvp.mkey == 0 ||
420 ibp->rvp.mkey == smp->mkey)
421 valid_mkey = 1;
422
423 /* Unset lease timeout on any valid Get/Set/TrapRepress */
424 if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
425 (smp->method == IB_MGMT_METHOD_GET ||
426 smp->method == IB_MGMT_METHOD_SET ||
427 smp->method == IB_MGMT_METHOD_TRAP_REPRESS))
428 ibp->rvp.mkey_lease_timeout = 0;
429
430 if (!valid_mkey) {
431 switch (smp->method) {
432 case IB_MGMT_METHOD_GET:
433 /* Bad mkey not a violation below level 2 */
434 if (ibp->rvp.mkeyprot < 2)
435 break;
436 /* fall through */
437 case IB_MGMT_METHOD_SET:
438 case IB_MGMT_METHOD_TRAP_REPRESS:
439 if (ibp->rvp.mkey_violations != 0xFFFF)
440 ++ibp->rvp.mkey_violations;
441 if (!ibp->rvp.mkey_lease_timeout &&
442 ibp->rvp.mkey_lease_period)
443 ibp->rvp.mkey_lease_timeout = jiffies +
444 ibp->rvp.mkey_lease_period * HZ;
445 /* Generate a trap notice. */
446 qib_bad_mkey(ibp, smp);
447 ret = 1;
448 }
449 }
450
451 return ret;
452 }
453
subn_get_portinfo(struct ib_smp * smp,struct ib_device * ibdev,u8 port)454 static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
455 u8 port)
456 {
457 struct qib_devdata *dd;
458 struct qib_pportdata *ppd;
459 struct qib_ibport *ibp;
460 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
461 u8 mtu;
462 int ret;
463 u32 state;
464 u32 port_num = be32_to_cpu(smp->attr_mod);
465
466 if (port_num == 0)
467 port_num = port;
468 else {
469 if (port_num > ibdev->phys_port_cnt) {
470 smp->status |= IB_SMP_INVALID_FIELD;
471 ret = reply(smp);
472 goto bail;
473 }
474 if (port_num != port) {
475 ibp = to_iport(ibdev, port_num);
476 ret = check_mkey(ibp, smp, 0);
477 if (ret) {
478 ret = IB_MAD_RESULT_FAILURE;
479 goto bail;
480 }
481 }
482 }
483
484 dd = dd_from_ibdev(ibdev);
485 /* IB numbers ports from 1, hdw from 0 */
486 ppd = dd->pport + (port_num - 1);
487 ibp = &ppd->ibport_data;
488
489 /* Clear all fields. Only set the non-zero fields. */
490 memset(smp->data, 0, sizeof(smp->data));
491
492 /* Only return the mkey if the protection field allows it. */
493 if (!(smp->method == IB_MGMT_METHOD_GET &&
494 ibp->rvp.mkey != smp->mkey &&
495 ibp->rvp.mkeyprot == 1))
496 pip->mkey = ibp->rvp.mkey;
497 pip->gid_prefix = ibp->rvp.gid_prefix;
498 pip->lid = cpu_to_be16(ppd->lid);
499 pip->sm_lid = cpu_to_be16((u16)ibp->rvp.sm_lid);
500 pip->cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
501 /* pip->diag_code; */
502 pip->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
503 pip->local_port_num = port;
504 pip->link_width_enabled = ppd->link_width_enabled;
505 pip->link_width_supported = ppd->link_width_supported;
506 pip->link_width_active = ppd->link_width_active;
507 state = dd->f_iblink_state(ppd->lastibcstat);
508 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state;
509
510 pip->portphysstate_linkdown =
511 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) |
512 (get_linkdowndefaultstate(ppd) ? 1 : 2);
513 pip->mkeyprot_resv_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
514 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) |
515 ppd->link_speed_enabled;
516 switch (ppd->ibmtu) {
517 default: /* something is wrong; fall through */
518 case 4096:
519 mtu = IB_MTU_4096;
520 break;
521 case 2048:
522 mtu = IB_MTU_2048;
523 break;
524 case 1024:
525 mtu = IB_MTU_1024;
526 break;
527 case 512:
528 mtu = IB_MTU_512;
529 break;
530 case 256:
531 mtu = IB_MTU_256;
532 break;
533 }
534 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->rvp.sm_sl;
535 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
536 pip->vl_high_limit = ibp->rvp.vl_high_limit;
537 pip->vl_arb_high_cap =
538 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP);
539 pip->vl_arb_low_cap =
540 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP);
541 /* InitTypeReply = 0 */
542 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096;
543 /* HCAs ignore VLStallCount and HOQLife */
544 /* pip->vlstallcnt_hoqlife; */
545 pip->operationalvl_pei_peo_fpi_fpo =
546 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4;
547 pip->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
548 /* P_KeyViolations are counted by hardware. */
549 pip->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
550 pip->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
551 /* Only the hardware GUID is supported for now */
552 pip->guid_cap = QIB_GUIDS_PER_PORT;
553 pip->clientrereg_resv_subnetto = ibp->rvp.subnet_timeout;
554 /* 32.768 usec. response time (guessing) */
555 pip->resv_resptimevalue = 3;
556 pip->localphyerrors_overrunerrors =
557 (get_phyerrthreshold(ppd) << 4) |
558 get_overrunthreshold(ppd);
559 /* pip->max_credit_hint; */
560 if (ibp->rvp.port_cap_flags & IB_PORT_LINK_LATENCY_SUP) {
561 u32 v;
562
563 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY);
564 pip->link_roundtrip_latency[0] = v >> 16;
565 pip->link_roundtrip_latency[1] = v >> 8;
566 pip->link_roundtrip_latency[2] = v;
567 }
568
569 ret = reply(smp);
570
571 bail:
572 return ret;
573 }
574
575 /**
576 * get_pkeys - return the PKEY table
577 * @dd: the qlogic_ib device
578 * @port: the IB port number
579 * @pkeys: the pkey table is placed here
580 */
get_pkeys(struct qib_devdata * dd,u8 port,u16 * pkeys)581 static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
582 {
583 struct qib_pportdata *ppd = dd->pport + port - 1;
584 /*
585 * always a kernel context, no locking needed.
586 * If we get here with ppd setup, no need to check
587 * that pd is valid.
588 */
589 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx];
590
591 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys));
592
593 return 0;
594 }
595
subn_get_pkeytable(struct ib_smp * smp,struct ib_device * ibdev,u8 port)596 static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
597 u8 port)
598 {
599 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
600 u16 *p = (u16 *) smp->data;
601 __be16 *q = (__be16 *) smp->data;
602
603 /* 64 blocks of 32 16-bit P_Key entries */
604
605 memset(smp->data, 0, sizeof(smp->data));
606 if (startpx == 0) {
607 struct qib_devdata *dd = dd_from_ibdev(ibdev);
608 unsigned i, n = qib_get_npkeys(dd);
609
610 get_pkeys(dd, port, p);
611
612 for (i = 0; i < n; i++)
613 q[i] = cpu_to_be16(p[i]);
614 } else
615 smp->status |= IB_SMP_INVALID_FIELD;
616
617 return reply(smp);
618 }
619
subn_set_guidinfo(struct ib_smp * smp,struct ib_device * ibdev,u8 port)620 static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev,
621 u8 port)
622 {
623 struct qib_devdata *dd = dd_from_ibdev(ibdev);
624 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
625 __be64 *p = (__be64 *) smp->data;
626 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
627
628 /* 32 blocks of 8 64-bit GUIDs per block */
629
630 if (startgx == 0 && pidx < dd->num_pports) {
631 struct qib_pportdata *ppd = dd->pport + pidx;
632 struct qib_ibport *ibp = &ppd->ibport_data;
633 unsigned i;
634
635 /* The first entry is read-only. */
636 for (i = 1; i < QIB_GUIDS_PER_PORT; i++)
637 ibp->guids[i - 1] = p[i];
638 } else
639 smp->status |= IB_SMP_INVALID_FIELD;
640
641 /* The only GUID we support is the first read-only entry. */
642 return subn_get_guidinfo(smp, ibdev, port);
643 }
644
645 /**
646 * subn_set_portinfo - set port information
647 * @smp: the incoming SM packet
648 * @ibdev: the infiniband device
649 * @port: the port on the device
650 *
651 * Set Portinfo (see ch. 14.2.5.6).
652 */
subn_set_portinfo(struct ib_smp * smp,struct ib_device * ibdev,u8 port)653 static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
654 u8 port)
655 {
656 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
657 struct ib_event event;
658 struct qib_devdata *dd;
659 struct qib_pportdata *ppd;
660 struct qib_ibport *ibp;
661 u8 clientrereg = (pip->clientrereg_resv_subnetto & 0x80);
662 unsigned long flags;
663 u16 lid, smlid;
664 u8 lwe;
665 u8 lse;
666 u8 state;
667 u8 vls;
668 u8 msl;
669 u16 lstate;
670 int ret, ore, mtu;
671 u32 port_num = be32_to_cpu(smp->attr_mod);
672
673 if (port_num == 0)
674 port_num = port;
675 else {
676 if (port_num > ibdev->phys_port_cnt)
677 goto err;
678 /* Port attributes can only be set on the receiving port */
679 if (port_num != port)
680 goto get_only;
681 }
682
683 dd = dd_from_ibdev(ibdev);
684 /* IB numbers ports from 1, hdw from 0 */
685 ppd = dd->pport + (port_num - 1);
686 ibp = &ppd->ibport_data;
687 event.device = ibdev;
688 event.element.port_num = port;
689
690 ibp->rvp.mkey = pip->mkey;
691 ibp->rvp.gid_prefix = pip->gid_prefix;
692 ibp->rvp.mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
693
694 lid = be16_to_cpu(pip->lid);
695 /* Must be a valid unicast LID address. */
696 if (lid == 0 || lid >= be16_to_cpu(IB_MULTICAST_LID_BASE))
697 smp->status |= IB_SMP_INVALID_FIELD;
698 else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) {
699 if (ppd->lid != lid)
700 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT);
701 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7))
702 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT);
703 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7);
704 event.event = IB_EVENT_LID_CHANGE;
705 ib_dispatch_event(&event);
706 }
707
708 smlid = be16_to_cpu(pip->sm_lid);
709 msl = pip->neighbormtu_mastersmsl & 0xF;
710 /* Must be a valid unicast LID address. */
711 if (smlid == 0 || smlid >= be16_to_cpu(IB_MULTICAST_LID_BASE))
712 smp->status |= IB_SMP_INVALID_FIELD;
713 else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
714 spin_lock_irqsave(&ibp->rvp.lock, flags);
715 if (ibp->rvp.sm_ah) {
716 if (smlid != ibp->rvp.sm_lid)
717 rdma_ah_set_dlid(&ibp->rvp.sm_ah->attr,
718 smlid);
719 if (msl != ibp->rvp.sm_sl)
720 rdma_ah_set_sl(&ibp->rvp.sm_ah->attr, msl);
721 }
722 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
723 if (smlid != ibp->rvp.sm_lid)
724 ibp->rvp.sm_lid = smlid;
725 if (msl != ibp->rvp.sm_sl)
726 ibp->rvp.sm_sl = msl;
727 event.event = IB_EVENT_SM_CHANGE;
728 ib_dispatch_event(&event);
729 }
730
731 /* Allow 1x or 4x to be set (see 14.2.6.6). */
732 lwe = pip->link_width_enabled;
733 if (lwe) {
734 if (lwe == 0xFF)
735 set_link_width_enabled(ppd, ppd->link_width_supported);
736 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported))
737 smp->status |= IB_SMP_INVALID_FIELD;
738 else if (lwe != ppd->link_width_enabled)
739 set_link_width_enabled(ppd, lwe);
740 }
741
742 lse = pip->linkspeedactive_enabled & 0xF;
743 if (lse) {
744 /*
745 * The IB 1.2 spec. only allows link speed values
746 * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific
747 * speeds.
748 */
749 if (lse == 15)
750 set_link_speed_enabled(ppd,
751 ppd->link_speed_supported);
752 else if (lse >= 8 || (lse & ~ppd->link_speed_supported))
753 smp->status |= IB_SMP_INVALID_FIELD;
754 else if (lse != ppd->link_speed_enabled)
755 set_link_speed_enabled(ppd, lse);
756 }
757
758 /* Set link down default state. */
759 switch (pip->portphysstate_linkdown & 0xF) {
760 case 0: /* NOP */
761 break;
762 case 1: /* SLEEP */
763 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
764 IB_LINKINITCMD_SLEEP);
765 break;
766 case 2: /* POLL */
767 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT,
768 IB_LINKINITCMD_POLL);
769 break;
770 default:
771 smp->status |= IB_SMP_INVALID_FIELD;
772 }
773
774 ibp->rvp.mkeyprot = pip->mkeyprot_resv_lmc >> 6;
775 ibp->rvp.vl_high_limit = pip->vl_high_limit;
776 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
777 ibp->rvp.vl_high_limit);
778
779 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF);
780 if (mtu == -1)
781 smp->status |= IB_SMP_INVALID_FIELD;
782 else
783 qib_set_mtu(ppd, mtu);
784
785 /* Set operational VLs */
786 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF;
787 if (vls) {
788 if (vls > ppd->vls_supported)
789 smp->status |= IB_SMP_INVALID_FIELD;
790 else
791 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls);
792 }
793
794 if (pip->mkey_violations == 0)
795 ibp->rvp.mkey_violations = 0;
796
797 if (pip->pkey_violations == 0)
798 ibp->rvp.pkey_violations = 0;
799
800 if (pip->qkey_violations == 0)
801 ibp->rvp.qkey_violations = 0;
802
803 ore = pip->localphyerrors_overrunerrors;
804 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF))
805 smp->status |= IB_SMP_INVALID_FIELD;
806
807 if (set_overrunthreshold(ppd, (ore & 0xF)))
808 smp->status |= IB_SMP_INVALID_FIELD;
809
810 ibp->rvp.subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
811
812 /*
813 * Do the port state change now that the other link parameters
814 * have been set.
815 * Changing the port physical state only makes sense if the link
816 * is down or is being set to down.
817 */
818 state = pip->linkspeed_portstate & 0xF;
819 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
820 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
821 smp->status |= IB_SMP_INVALID_FIELD;
822
823 /*
824 * Only state changes of DOWN, ARM, and ACTIVE are valid
825 * and must be in the correct state to take effect (see 7.2.6).
826 */
827 switch (state) {
828 case IB_PORT_NOP:
829 if (lstate == 0)
830 break;
831 /* FALLTHROUGH */
832 case IB_PORT_DOWN:
833 if (lstate == 0)
834 lstate = QIB_IB_LINKDOWN_ONLY;
835 else if (lstate == 1)
836 lstate = QIB_IB_LINKDOWN_SLEEP;
837 else if (lstate == 2)
838 lstate = QIB_IB_LINKDOWN;
839 else if (lstate == 3)
840 lstate = QIB_IB_LINKDOWN_DISABLE;
841 else {
842 smp->status |= IB_SMP_INVALID_FIELD;
843 break;
844 }
845 spin_lock_irqsave(&ppd->lflags_lock, flags);
846 ppd->lflags &= ~QIBL_LINKV;
847 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
848 qib_set_linkstate(ppd, lstate);
849 /*
850 * Don't send a reply if the response would be sent
851 * through the disabled port.
852 */
853 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) {
854 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
855 goto done;
856 }
857 qib_wait_linkstate(ppd, QIBL_LINKV, 10);
858 break;
859 case IB_PORT_ARMED:
860 qib_set_linkstate(ppd, QIB_IB_LINKARM);
861 break;
862 case IB_PORT_ACTIVE:
863 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE);
864 break;
865 default:
866 smp->status |= IB_SMP_INVALID_FIELD;
867 }
868
869 if (clientrereg) {
870 event.event = IB_EVENT_CLIENT_REREGISTER;
871 ib_dispatch_event(&event);
872 }
873
874 /* restore re-reg bit per o14-12.2.1 */
875 pip->clientrereg_resv_subnetto |= clientrereg;
876
877 goto get_only;
878
879 err:
880 smp->status |= IB_SMP_INVALID_FIELD;
881 get_only:
882 ret = subn_get_portinfo(smp, ibdev, port);
883 done:
884 return ret;
885 }
886
887 /**
888 * rm_pkey - decrecment the reference count for the given PKEY
889 * @dd: the qlogic_ib device
890 * @key: the PKEY index
891 *
892 * Return true if this was the last reference and the hardware table entry
893 * needs to be changed.
894 */
rm_pkey(struct qib_pportdata * ppd,u16 key)895 static int rm_pkey(struct qib_pportdata *ppd, u16 key)
896 {
897 int i;
898 int ret;
899
900 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
901 if (ppd->pkeys[i] != key)
902 continue;
903 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) {
904 ppd->pkeys[i] = 0;
905 ret = 1;
906 goto bail;
907 }
908 break;
909 }
910
911 ret = 0;
912
913 bail:
914 return ret;
915 }
916
917 /**
918 * add_pkey - add the given PKEY to the hardware table
919 * @dd: the qlogic_ib device
920 * @key: the PKEY
921 *
922 * Return an error code if unable to add the entry, zero if no change,
923 * or 1 if the hardware PKEY register needs to be updated.
924 */
add_pkey(struct qib_pportdata * ppd,u16 key)925 static int add_pkey(struct qib_pportdata *ppd, u16 key)
926 {
927 int i;
928 u16 lkey = key & 0x7FFF;
929 int any = 0;
930 int ret;
931
932 if (lkey == 0x7FFF) {
933 ret = 0;
934 goto bail;
935 }
936
937 /* Look for an empty slot or a matching PKEY. */
938 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
939 if (!ppd->pkeys[i]) {
940 any++;
941 continue;
942 }
943 /* If it matches exactly, try to increment the ref count */
944 if (ppd->pkeys[i] == key) {
945 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) {
946 ret = 0;
947 goto bail;
948 }
949 /* Lost the race. Look for an empty slot below. */
950 atomic_dec(&ppd->pkeyrefs[i]);
951 any++;
952 }
953 /*
954 * It makes no sense to have both the limited and unlimited
955 * PKEY set at the same time since the unlimited one will
956 * disable the limited one.
957 */
958 if ((ppd->pkeys[i] & 0x7FFF) == lkey) {
959 ret = -EEXIST;
960 goto bail;
961 }
962 }
963 if (!any) {
964 ret = -EBUSY;
965 goto bail;
966 }
967 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
968 if (!ppd->pkeys[i] &&
969 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) {
970 /* for qibstats, etc. */
971 ppd->pkeys[i] = key;
972 ret = 1;
973 goto bail;
974 }
975 }
976 ret = -EBUSY;
977
978 bail:
979 return ret;
980 }
981
982 /**
983 * set_pkeys - set the PKEY table for ctxt 0
984 * @dd: the qlogic_ib device
985 * @port: the IB port number
986 * @pkeys: the PKEY table
987 */
set_pkeys(struct qib_devdata * dd,u8 port,u16 * pkeys)988 static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys)
989 {
990 struct qib_pportdata *ppd;
991 struct qib_ctxtdata *rcd;
992 int i;
993 int changed = 0;
994
995 /*
996 * IB port one/two always maps to context zero/one,
997 * always a kernel context, no locking needed
998 * If we get here with ppd setup, no need to check
999 * that rcd is valid.
1000 */
1001 ppd = dd->pport + (port - 1);
1002 rcd = dd->rcd[ppd->hw_pidx];
1003
1004 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) {
1005 u16 key = pkeys[i];
1006 u16 okey = rcd->pkeys[i];
1007
1008 if (key == okey)
1009 continue;
1010 /*
1011 * The value of this PKEY table entry is changing.
1012 * Remove the old entry in the hardware's array of PKEYs.
1013 */
1014 if (okey & 0x7FFF)
1015 changed |= rm_pkey(ppd, okey);
1016 if (key & 0x7FFF) {
1017 int ret = add_pkey(ppd, key);
1018
1019 if (ret < 0)
1020 key = 0;
1021 else
1022 changed |= ret;
1023 }
1024 rcd->pkeys[i] = key;
1025 }
1026 if (changed) {
1027 struct ib_event event;
1028
1029 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0);
1030
1031 event.event = IB_EVENT_PKEY_CHANGE;
1032 event.device = &dd->verbs_dev.rdi.ibdev;
1033 event.element.port_num = port;
1034 ib_dispatch_event(&event);
1035 }
1036 return 0;
1037 }
1038
subn_set_pkeytable(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1039 static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev,
1040 u8 port)
1041 {
1042 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
1043 __be16 *p = (__be16 *) smp->data;
1044 u16 *q = (u16 *) smp->data;
1045 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1046 unsigned i, n = qib_get_npkeys(dd);
1047
1048 for (i = 0; i < n; i++)
1049 q[i] = be16_to_cpu(p[i]);
1050
1051 if (startpx != 0 || set_pkeys(dd, port, q) != 0)
1052 smp->status |= IB_SMP_INVALID_FIELD;
1053
1054 return subn_get_pkeytable(smp, ibdev, port);
1055 }
1056
subn_get_sl_to_vl(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1057 static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1058 u8 port)
1059 {
1060 struct qib_ibport *ibp = to_iport(ibdev, port);
1061 u8 *p = (u8 *) smp->data;
1062 unsigned i;
1063
1064 memset(smp->data, 0, sizeof(smp->data));
1065
1066 if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP))
1067 smp->status |= IB_SMP_UNSUP_METHOD;
1068 else
1069 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2)
1070 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1];
1071
1072 return reply(smp);
1073 }
1074
subn_set_sl_to_vl(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1075 static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev,
1076 u8 port)
1077 {
1078 struct qib_ibport *ibp = to_iport(ibdev, port);
1079 u8 *p = (u8 *) smp->data;
1080 unsigned i;
1081
1082 if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP)) {
1083 smp->status |= IB_SMP_UNSUP_METHOD;
1084 return reply(smp);
1085 }
1086
1087 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) {
1088 ibp->sl_to_vl[i] = *p >> 4;
1089 ibp->sl_to_vl[i + 1] = *p & 0xF;
1090 }
1091 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)),
1092 _QIB_EVENT_SL2VL_CHANGE_BIT);
1093
1094 return subn_get_sl_to_vl(smp, ibdev, port);
1095 }
1096
subn_get_vl_arb(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1097 static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1098 u8 port)
1099 {
1100 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1101 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1102
1103 memset(smp->data, 0, sizeof(smp->data));
1104
1105 if (ppd->vls_supported == IB_VL_VL0)
1106 smp->status |= IB_SMP_UNSUP_METHOD;
1107 else if (which == IB_VLARB_LOWPRI_0_31)
1108 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1109 smp->data);
1110 else if (which == IB_VLARB_HIGHPRI_0_31)
1111 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1112 smp->data);
1113 else
1114 smp->status |= IB_SMP_INVALID_FIELD;
1115
1116 return reply(smp);
1117 }
1118
subn_set_vl_arb(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1119 static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev,
1120 u8 port)
1121 {
1122 unsigned which = be32_to_cpu(smp->attr_mod) >> 16;
1123 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1124
1125 if (ppd->vls_supported == IB_VL_VL0)
1126 smp->status |= IB_SMP_UNSUP_METHOD;
1127 else if (which == IB_VLARB_LOWPRI_0_31)
1128 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB,
1129 smp->data);
1130 else if (which == IB_VLARB_HIGHPRI_0_31)
1131 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB,
1132 smp->data);
1133 else
1134 smp->status |= IB_SMP_INVALID_FIELD;
1135
1136 return subn_get_vl_arb(smp, ibdev, port);
1137 }
1138
subn_trap_repress(struct ib_smp * smp,struct ib_device * ibdev,u8 port)1139 static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev,
1140 u8 port)
1141 {
1142 /*
1143 * For now, we only send the trap once so no need to process this.
1144 * o13-6, o13-7,
1145 * o14-3.a4 The SMA shall not send any message in response to a valid
1146 * SubnTrapRepress() message.
1147 */
1148 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1149 }
1150
pma_get_classportinfo(struct ib_pma_mad * pmp,struct ib_device * ibdev)1151 static int pma_get_classportinfo(struct ib_pma_mad *pmp,
1152 struct ib_device *ibdev)
1153 {
1154 struct ib_class_port_info *p =
1155 (struct ib_class_port_info *)pmp->data;
1156 struct qib_devdata *dd = dd_from_ibdev(ibdev);
1157
1158 memset(pmp->data, 0, sizeof(pmp->data));
1159
1160 if (pmp->mad_hdr.attr_mod != 0)
1161 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1162
1163 /* Note that AllPortSelect is not valid */
1164 p->base_version = 1;
1165 p->class_version = 1;
1166 p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
1167 /*
1168 * Set the most significant bit of CM2 to indicate support for
1169 * congestion statistics
1170 */
1171 ib_set_cpi_capmask2(p,
1172 dd->psxmitwait_supported <<
1173 (31 - IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE));
1174 /*
1175 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
1176 */
1177 ib_set_cpi_resp_time(p, 18);
1178
1179 return reply((struct ib_smp *) pmp);
1180 }
1181
pma_get_portsamplescontrol(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1182 static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp,
1183 struct ib_device *ibdev, u8 port)
1184 {
1185 struct ib_pma_portsamplescontrol *p =
1186 (struct ib_pma_portsamplescontrol *)pmp->data;
1187 struct qib_ibdev *dev = to_idev(ibdev);
1188 struct qib_devdata *dd = dd_from_dev(dev);
1189 struct qib_ibport *ibp = to_iport(ibdev, port);
1190 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1191 unsigned long flags;
1192 u8 port_select = p->port_select;
1193
1194 memset(pmp->data, 0, sizeof(pmp->data));
1195
1196 p->port_select = port_select;
1197 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1198 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1199 goto bail;
1200 }
1201 spin_lock_irqsave(&ibp->rvp.lock, flags);
1202 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS);
1203 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1204 p->counter_width = 4; /* 32 bit counters */
1205 p->counter_mask0_9 = COUNTER_MASK0_9;
1206 p->sample_start = cpu_to_be32(ibp->rvp.pma_sample_start);
1207 p->sample_interval = cpu_to_be32(ibp->rvp.pma_sample_interval);
1208 p->tag = cpu_to_be16(ibp->rvp.pma_tag);
1209 p->counter_select[0] = ibp->rvp.pma_counter_select[0];
1210 p->counter_select[1] = ibp->rvp.pma_counter_select[1];
1211 p->counter_select[2] = ibp->rvp.pma_counter_select[2];
1212 p->counter_select[3] = ibp->rvp.pma_counter_select[3];
1213 p->counter_select[4] = ibp->rvp.pma_counter_select[4];
1214 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1215
1216 bail:
1217 return reply((struct ib_smp *) pmp);
1218 }
1219
pma_set_portsamplescontrol(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1220 static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp,
1221 struct ib_device *ibdev, u8 port)
1222 {
1223 struct ib_pma_portsamplescontrol *p =
1224 (struct ib_pma_portsamplescontrol *)pmp->data;
1225 struct qib_ibdev *dev = to_idev(ibdev);
1226 struct qib_devdata *dd = dd_from_dev(dev);
1227 struct qib_ibport *ibp = to_iport(ibdev, port);
1228 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1229 unsigned long flags;
1230 u8 status, xmit_flags;
1231 int ret;
1232
1233 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
1234 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1235 ret = reply((struct ib_smp *) pmp);
1236 goto bail;
1237 }
1238
1239 spin_lock_irqsave(&ibp->rvp.lock, flags);
1240
1241 /* Port Sampling code owns the PS* HW counters */
1242 xmit_flags = ppd->cong_stats.flags;
1243 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE;
1244 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1245 if (status == IB_PMA_SAMPLE_STATUS_DONE ||
1246 (status == IB_PMA_SAMPLE_STATUS_RUNNING &&
1247 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) {
1248 ibp->rvp.pma_sample_start = be32_to_cpu(p->sample_start);
1249 ibp->rvp.pma_sample_interval = be32_to_cpu(p->sample_interval);
1250 ibp->rvp.pma_tag = be16_to_cpu(p->tag);
1251 ibp->rvp.pma_counter_select[0] = p->counter_select[0];
1252 ibp->rvp.pma_counter_select[1] = p->counter_select[1];
1253 ibp->rvp.pma_counter_select[2] = p->counter_select[2];
1254 ibp->rvp.pma_counter_select[3] = p->counter_select[3];
1255 ibp->rvp.pma_counter_select[4] = p->counter_select[4];
1256 dd->f_set_cntr_sample(ppd, ibp->rvp.pma_sample_interval,
1257 ibp->rvp.pma_sample_start);
1258 }
1259 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1260
1261 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
1262
1263 bail:
1264 return ret;
1265 }
1266
get_counter(struct qib_ibport * ibp,struct qib_pportdata * ppd,__be16 sel)1267 static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd,
1268 __be16 sel)
1269 {
1270 u64 ret;
1271
1272 switch (sel) {
1273 case IB_PMA_PORT_XMIT_DATA:
1274 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA);
1275 break;
1276 case IB_PMA_PORT_RCV_DATA:
1277 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA);
1278 break;
1279 case IB_PMA_PORT_XMIT_PKTS:
1280 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS);
1281 break;
1282 case IB_PMA_PORT_RCV_PKTS:
1283 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS);
1284 break;
1285 case IB_PMA_PORT_XMIT_WAIT:
1286 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT);
1287 break;
1288 default:
1289 ret = 0;
1290 }
1291
1292 return ret;
1293 }
1294
1295 /* This function assumes that the xmit_wait lock is already held */
xmit_wait_get_value_delta(struct qib_pportdata * ppd)1296 static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd)
1297 {
1298 u32 delta;
1299
1300 delta = get_counter(&ppd->ibport_data, ppd,
1301 IB_PMA_PORT_XMIT_WAIT);
1302 return ppd->cong_stats.counter + delta;
1303 }
1304
cache_hw_sample_counters(struct qib_pportdata * ppd)1305 static void cache_hw_sample_counters(struct qib_pportdata *ppd)
1306 {
1307 struct qib_ibport *ibp = &ppd->ibport_data;
1308
1309 ppd->cong_stats.counter_cache.psxmitdata =
1310 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA);
1311 ppd->cong_stats.counter_cache.psrcvdata =
1312 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA);
1313 ppd->cong_stats.counter_cache.psxmitpkts =
1314 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS);
1315 ppd->cong_stats.counter_cache.psrcvpkts =
1316 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS);
1317 ppd->cong_stats.counter_cache.psxmitwait =
1318 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT);
1319 }
1320
get_cache_hw_sample_counters(struct qib_pportdata * ppd,__be16 sel)1321 static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd,
1322 __be16 sel)
1323 {
1324 u64 ret;
1325
1326 switch (sel) {
1327 case IB_PMA_PORT_XMIT_DATA:
1328 ret = ppd->cong_stats.counter_cache.psxmitdata;
1329 break;
1330 case IB_PMA_PORT_RCV_DATA:
1331 ret = ppd->cong_stats.counter_cache.psrcvdata;
1332 break;
1333 case IB_PMA_PORT_XMIT_PKTS:
1334 ret = ppd->cong_stats.counter_cache.psxmitpkts;
1335 break;
1336 case IB_PMA_PORT_RCV_PKTS:
1337 ret = ppd->cong_stats.counter_cache.psrcvpkts;
1338 break;
1339 case IB_PMA_PORT_XMIT_WAIT:
1340 ret = ppd->cong_stats.counter_cache.psxmitwait;
1341 break;
1342 default:
1343 ret = 0;
1344 }
1345
1346 return ret;
1347 }
1348
pma_get_portsamplesresult(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1349 static int pma_get_portsamplesresult(struct ib_pma_mad *pmp,
1350 struct ib_device *ibdev, u8 port)
1351 {
1352 struct ib_pma_portsamplesresult *p =
1353 (struct ib_pma_portsamplesresult *)pmp->data;
1354 struct qib_ibdev *dev = to_idev(ibdev);
1355 struct qib_devdata *dd = dd_from_dev(dev);
1356 struct qib_ibport *ibp = to_iport(ibdev, port);
1357 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1358 unsigned long flags;
1359 u8 status;
1360 int i;
1361
1362 memset(pmp->data, 0, sizeof(pmp->data));
1363 spin_lock_irqsave(&ibp->rvp.lock, flags);
1364 p->tag = cpu_to_be16(ibp->rvp.pma_tag);
1365 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1366 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1367 else {
1368 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1369 p->sample_status = cpu_to_be16(status);
1370 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1371 cache_hw_sample_counters(ppd);
1372 ppd->cong_stats.counter =
1373 xmit_wait_get_value_delta(ppd);
1374 dd->f_set_cntr_sample(ppd,
1375 QIB_CONG_TIMER_PSINTERVAL, 0);
1376 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1377 }
1378 }
1379 for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++)
1380 p->counter[i] = cpu_to_be32(
1381 get_cache_hw_sample_counters(
1382 ppd, ibp->rvp.pma_counter_select[i]));
1383 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1384
1385 return reply((struct ib_smp *) pmp);
1386 }
1387
pma_get_portsamplesresult_ext(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1388 static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp,
1389 struct ib_device *ibdev, u8 port)
1390 {
1391 struct ib_pma_portsamplesresult_ext *p =
1392 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1393 struct qib_ibdev *dev = to_idev(ibdev);
1394 struct qib_devdata *dd = dd_from_dev(dev);
1395 struct qib_ibport *ibp = to_iport(ibdev, port);
1396 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1397 unsigned long flags;
1398 u8 status;
1399 int i;
1400
1401 /* Port Sampling code owns the PS* HW counters */
1402 memset(pmp->data, 0, sizeof(pmp->data));
1403 spin_lock_irqsave(&ibp->rvp.lock, flags);
1404 p->tag = cpu_to_be16(ibp->rvp.pma_tag);
1405 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER)
1406 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE;
1407 else {
1408 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
1409 p->sample_status = cpu_to_be16(status);
1410 /* 64 bits */
1411 p->extended_width = cpu_to_be32(0x80000000);
1412 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1413 cache_hw_sample_counters(ppd);
1414 ppd->cong_stats.counter =
1415 xmit_wait_get_value_delta(ppd);
1416 dd->f_set_cntr_sample(ppd,
1417 QIB_CONG_TIMER_PSINTERVAL, 0);
1418 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
1419 }
1420 }
1421 for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++)
1422 p->counter[i] = cpu_to_be64(
1423 get_cache_hw_sample_counters(
1424 ppd, ibp->rvp.pma_counter_select[i]));
1425 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1426
1427 return reply((struct ib_smp *) pmp);
1428 }
1429
pma_get_portcounters(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1430 static int pma_get_portcounters(struct ib_pma_mad *pmp,
1431 struct ib_device *ibdev, u8 port)
1432 {
1433 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1434 pmp->data;
1435 struct qib_ibport *ibp = to_iport(ibdev, port);
1436 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1437 struct qib_verbs_counters cntrs;
1438 u8 port_select = p->port_select;
1439
1440 qib_get_counters(ppd, &cntrs);
1441
1442 /* Adjust counters for any resets done. */
1443 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1444 cntrs.link_error_recovery_counter -=
1445 ibp->z_link_error_recovery_counter;
1446 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1447 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1448 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors;
1449 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1450 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1451 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1452 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1453 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1454 cntrs.local_link_integrity_errors -=
1455 ibp->z_local_link_integrity_errors;
1456 cntrs.excessive_buffer_overrun_errors -=
1457 ibp->z_excessive_buffer_overrun_errors;
1458 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1459 cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped;
1460
1461 memset(pmp->data, 0, sizeof(pmp->data));
1462
1463 p->port_select = port_select;
1464 if (pmp->mad_hdr.attr_mod != 0 || port_select != port)
1465 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1466
1467 if (cntrs.symbol_error_counter > 0xFFFFUL)
1468 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1469 else
1470 p->symbol_error_counter =
1471 cpu_to_be16((u16)cntrs.symbol_error_counter);
1472 if (cntrs.link_error_recovery_counter > 0xFFUL)
1473 p->link_error_recovery_counter = 0xFF;
1474 else
1475 p->link_error_recovery_counter =
1476 (u8)cntrs.link_error_recovery_counter;
1477 if (cntrs.link_downed_counter > 0xFFUL)
1478 p->link_downed_counter = 0xFF;
1479 else
1480 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1481 if (cntrs.port_rcv_errors > 0xFFFFUL)
1482 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1483 else
1484 p->port_rcv_errors =
1485 cpu_to_be16((u16) cntrs.port_rcv_errors);
1486 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1487 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1488 else
1489 p->port_rcv_remphys_errors =
1490 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1491 if (cntrs.port_xmit_discards > 0xFFFFUL)
1492 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1493 else
1494 p->port_xmit_discards =
1495 cpu_to_be16((u16)cntrs.port_xmit_discards);
1496 if (cntrs.local_link_integrity_errors > 0xFUL)
1497 cntrs.local_link_integrity_errors = 0xFUL;
1498 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1499 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1500 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1501 cntrs.excessive_buffer_overrun_errors;
1502 if (cntrs.vl15_dropped > 0xFFFFUL)
1503 p->vl15_dropped = cpu_to_be16(0xFFFF);
1504 else
1505 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1506 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1507 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF);
1508 else
1509 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1510 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1511 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF);
1512 else
1513 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1514 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1515 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF);
1516 else
1517 p->port_xmit_packets =
1518 cpu_to_be32((u32)cntrs.port_xmit_packets);
1519 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1520 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF);
1521 else
1522 p->port_rcv_packets =
1523 cpu_to_be32((u32) cntrs.port_rcv_packets);
1524
1525 return reply((struct ib_smp *) pmp);
1526 }
1527
pma_get_portcounters_cong(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1528 static int pma_get_portcounters_cong(struct ib_pma_mad *pmp,
1529 struct ib_device *ibdev, u8 port)
1530 {
1531 /* Congestion PMA packets start at offset 24 not 64 */
1532 struct ib_pma_portcounters_cong *p =
1533 (struct ib_pma_portcounters_cong *)pmp->reserved;
1534 struct qib_verbs_counters cntrs;
1535 struct qib_ibport *ibp = to_iport(ibdev, port);
1536 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1537 struct qib_devdata *dd = dd_from_ppd(ppd);
1538 u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF;
1539 u64 xmit_wait_counter;
1540 unsigned long flags;
1541
1542 /*
1543 * This check is performed only in the GET method because the
1544 * SET method ends up calling this anyway.
1545 */
1546 if (!dd->psxmitwait_supported)
1547 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
1548 if (port_select != port)
1549 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1550
1551 qib_get_counters(ppd, &cntrs);
1552 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags);
1553 xmit_wait_counter = xmit_wait_get_value_delta(ppd);
1554 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags);
1555
1556 /* Adjust counters for any resets done. */
1557 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter;
1558 cntrs.link_error_recovery_counter -=
1559 ibp->z_link_error_recovery_counter;
1560 cntrs.link_downed_counter -= ibp->z_link_downed_counter;
1561 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors;
1562 cntrs.port_rcv_remphys_errors -=
1563 ibp->z_port_rcv_remphys_errors;
1564 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards;
1565 cntrs.local_link_integrity_errors -=
1566 ibp->z_local_link_integrity_errors;
1567 cntrs.excessive_buffer_overrun_errors -=
1568 ibp->z_excessive_buffer_overrun_errors;
1569 cntrs.vl15_dropped -= ibp->z_vl15_dropped;
1570 cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped;
1571 cntrs.port_xmit_data -= ibp->z_port_xmit_data;
1572 cntrs.port_rcv_data -= ibp->z_port_rcv_data;
1573 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets;
1574 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets;
1575
1576 memset(pmp->reserved, 0, sizeof(pmp->reserved));
1577 memset(pmp->data, 0, sizeof(pmp->data));
1578
1579 /*
1580 * Set top 3 bits to indicate interval in picoseconds in
1581 * remaining bits.
1582 */
1583 p->port_check_rate =
1584 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) |
1585 (dd->psxmitwait_check_rate &
1586 ~(QIB_XMIT_RATE_PICO << 13)));
1587 p->port_adr_events = cpu_to_be64(0);
1588 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter);
1589 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data);
1590 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data);
1591 p->port_xmit_packets =
1592 cpu_to_be64(cntrs.port_xmit_packets);
1593 p->port_rcv_packets =
1594 cpu_to_be64(cntrs.port_rcv_packets);
1595 if (cntrs.symbol_error_counter > 0xFFFFUL)
1596 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1597 else
1598 p->symbol_error_counter =
1599 cpu_to_be16(
1600 (u16)cntrs.symbol_error_counter);
1601 if (cntrs.link_error_recovery_counter > 0xFFUL)
1602 p->link_error_recovery_counter = 0xFF;
1603 else
1604 p->link_error_recovery_counter =
1605 (u8)cntrs.link_error_recovery_counter;
1606 if (cntrs.link_downed_counter > 0xFFUL)
1607 p->link_downed_counter = 0xFF;
1608 else
1609 p->link_downed_counter =
1610 (u8)cntrs.link_downed_counter;
1611 if (cntrs.port_rcv_errors > 0xFFFFUL)
1612 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1613 else
1614 p->port_rcv_errors =
1615 cpu_to_be16((u16) cntrs.port_rcv_errors);
1616 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1617 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1618 else
1619 p->port_rcv_remphys_errors =
1620 cpu_to_be16(
1621 (u16)cntrs.port_rcv_remphys_errors);
1622 if (cntrs.port_xmit_discards > 0xFFFFUL)
1623 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1624 else
1625 p->port_xmit_discards =
1626 cpu_to_be16((u16)cntrs.port_xmit_discards);
1627 if (cntrs.local_link_integrity_errors > 0xFUL)
1628 cntrs.local_link_integrity_errors = 0xFUL;
1629 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1630 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1631 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) |
1632 cntrs.excessive_buffer_overrun_errors;
1633 if (cntrs.vl15_dropped > 0xFFFFUL)
1634 p->vl15_dropped = cpu_to_be16(0xFFFF);
1635 else
1636 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1637
1638 return reply((struct ib_smp *)pmp);
1639 }
1640
qib_snapshot_pmacounters(struct qib_ibport * ibp,struct qib_pma_counters * pmacounters)1641 static void qib_snapshot_pmacounters(
1642 struct qib_ibport *ibp,
1643 struct qib_pma_counters *pmacounters)
1644 {
1645 struct qib_pma_counters *p;
1646 int cpu;
1647
1648 memset(pmacounters, 0, sizeof(*pmacounters));
1649 for_each_possible_cpu(cpu) {
1650 p = per_cpu_ptr(ibp->pmastats, cpu);
1651 pmacounters->n_unicast_xmit += p->n_unicast_xmit;
1652 pmacounters->n_unicast_rcv += p->n_unicast_rcv;
1653 pmacounters->n_multicast_xmit += p->n_multicast_xmit;
1654 pmacounters->n_multicast_rcv += p->n_multicast_rcv;
1655 }
1656 }
1657
pma_get_portcounters_ext(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1658 static int pma_get_portcounters_ext(struct ib_pma_mad *pmp,
1659 struct ib_device *ibdev, u8 port)
1660 {
1661 struct ib_pma_portcounters_ext *p =
1662 (struct ib_pma_portcounters_ext *)pmp->data;
1663 struct qib_ibport *ibp = to_iport(ibdev, port);
1664 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1665 u64 swords, rwords, spkts, rpkts, xwait;
1666 struct qib_pma_counters pma;
1667 u8 port_select = p->port_select;
1668
1669 memset(pmp->data, 0, sizeof(pmp->data));
1670
1671 p->port_select = port_select;
1672 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) {
1673 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
1674 goto bail;
1675 }
1676
1677 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1678
1679 /* Adjust counters for any resets done. */
1680 swords -= ibp->z_port_xmit_data;
1681 rwords -= ibp->z_port_rcv_data;
1682 spkts -= ibp->z_port_xmit_packets;
1683 rpkts -= ibp->z_port_rcv_packets;
1684
1685 p->port_xmit_data = cpu_to_be64(swords);
1686 p->port_rcv_data = cpu_to_be64(rwords);
1687 p->port_xmit_packets = cpu_to_be64(spkts);
1688 p->port_rcv_packets = cpu_to_be64(rpkts);
1689
1690 qib_snapshot_pmacounters(ibp, &pma);
1691
1692 p->port_unicast_xmit_packets = cpu_to_be64(pma.n_unicast_xmit
1693 - ibp->z_unicast_xmit);
1694 p->port_unicast_rcv_packets = cpu_to_be64(pma.n_unicast_rcv
1695 - ibp->z_unicast_rcv);
1696 p->port_multicast_xmit_packets = cpu_to_be64(pma.n_multicast_xmit
1697 - ibp->z_multicast_xmit);
1698 p->port_multicast_rcv_packets = cpu_to_be64(pma.n_multicast_rcv
1699 - ibp->z_multicast_rcv);
1700
1701 bail:
1702 return reply((struct ib_smp *) pmp);
1703 }
1704
pma_set_portcounters(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1705 static int pma_set_portcounters(struct ib_pma_mad *pmp,
1706 struct ib_device *ibdev, u8 port)
1707 {
1708 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1709 pmp->data;
1710 struct qib_ibport *ibp = to_iport(ibdev, port);
1711 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1712 struct qib_verbs_counters cntrs;
1713
1714 /*
1715 * Since the HW doesn't support clearing counters, we save the
1716 * current count and subtract it from future responses.
1717 */
1718 qib_get_counters(ppd, &cntrs);
1719
1720 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1721 ibp->z_symbol_error_counter = cntrs.symbol_error_counter;
1722
1723 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1724 ibp->z_link_error_recovery_counter =
1725 cntrs.link_error_recovery_counter;
1726
1727 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1728 ibp->z_link_downed_counter = cntrs.link_downed_counter;
1729
1730 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1731 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1732
1733 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1734 ibp->z_port_rcv_remphys_errors =
1735 cntrs.port_rcv_remphys_errors;
1736
1737 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1738 ibp->z_port_xmit_discards = cntrs.port_xmit_discards;
1739
1740 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1741 ibp->z_local_link_integrity_errors =
1742 cntrs.local_link_integrity_errors;
1743
1744 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1745 ibp->z_excessive_buffer_overrun_errors =
1746 cntrs.excessive_buffer_overrun_errors;
1747
1748 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
1749 ibp->rvp.n_vl15_dropped = 0;
1750 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1751 }
1752
1753 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1754 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1755
1756 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1757 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1758
1759 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1760 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1761
1762 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1763 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1764
1765 return pma_get_portcounters(pmp, ibdev, port);
1766 }
1767
pma_set_portcounters_cong(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1768 static int pma_set_portcounters_cong(struct ib_pma_mad *pmp,
1769 struct ib_device *ibdev, u8 port)
1770 {
1771 struct qib_ibport *ibp = to_iport(ibdev, port);
1772 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1773 struct qib_devdata *dd = dd_from_ppd(ppd);
1774 struct qib_verbs_counters cntrs;
1775 u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF;
1776 int ret = 0;
1777 unsigned long flags;
1778
1779 qib_get_counters(ppd, &cntrs);
1780 /* Get counter values before we save them */
1781 ret = pma_get_portcounters_cong(pmp, ibdev, port);
1782
1783 if (counter_select & IB_PMA_SEL_CONG_XMIT) {
1784 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags);
1785 ppd->cong_stats.counter = 0;
1786 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
1787 0x0);
1788 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags);
1789 }
1790 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) {
1791 ibp->z_port_xmit_data = cntrs.port_xmit_data;
1792 ibp->z_port_rcv_data = cntrs.port_rcv_data;
1793 ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
1794 ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
1795 }
1796 if (counter_select & IB_PMA_SEL_CONG_ALL) {
1797 ibp->z_symbol_error_counter =
1798 cntrs.symbol_error_counter;
1799 ibp->z_link_error_recovery_counter =
1800 cntrs.link_error_recovery_counter;
1801 ibp->z_link_downed_counter =
1802 cntrs.link_downed_counter;
1803 ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
1804 ibp->z_port_rcv_remphys_errors =
1805 cntrs.port_rcv_remphys_errors;
1806 ibp->z_port_xmit_discards =
1807 cntrs.port_xmit_discards;
1808 ibp->z_local_link_integrity_errors =
1809 cntrs.local_link_integrity_errors;
1810 ibp->z_excessive_buffer_overrun_errors =
1811 cntrs.excessive_buffer_overrun_errors;
1812 ibp->rvp.n_vl15_dropped = 0;
1813 ibp->z_vl15_dropped = cntrs.vl15_dropped;
1814 }
1815
1816 return ret;
1817 }
1818
pma_set_portcounters_ext(struct ib_pma_mad * pmp,struct ib_device * ibdev,u8 port)1819 static int pma_set_portcounters_ext(struct ib_pma_mad *pmp,
1820 struct ib_device *ibdev, u8 port)
1821 {
1822 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1823 pmp->data;
1824 struct qib_ibport *ibp = to_iport(ibdev, port);
1825 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1826 u64 swords, rwords, spkts, rpkts, xwait;
1827 struct qib_pma_counters pma;
1828
1829 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait);
1830
1831 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1832 ibp->z_port_xmit_data = swords;
1833
1834 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1835 ibp->z_port_rcv_data = rwords;
1836
1837 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1838 ibp->z_port_xmit_packets = spkts;
1839
1840 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1841 ibp->z_port_rcv_packets = rpkts;
1842
1843 qib_snapshot_pmacounters(ibp, &pma);
1844
1845 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1846 ibp->z_unicast_xmit = pma.n_unicast_xmit;
1847
1848 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1849 ibp->z_unicast_rcv = pma.n_unicast_rcv;
1850
1851 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1852 ibp->z_multicast_xmit = pma.n_multicast_xmit;
1853
1854 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1855 ibp->z_multicast_rcv = pma.n_multicast_rcv;
1856
1857 return pma_get_portcounters_ext(pmp, ibdev, port);
1858 }
1859
process_subn(struct ib_device * ibdev,int mad_flags,u8 port,const struct ib_mad * in_mad,struct ib_mad * out_mad)1860 static int process_subn(struct ib_device *ibdev, int mad_flags,
1861 u8 port, const struct ib_mad *in_mad,
1862 struct ib_mad *out_mad)
1863 {
1864 struct ib_smp *smp = (struct ib_smp *)out_mad;
1865 struct qib_ibport *ibp = to_iport(ibdev, port);
1866 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
1867 int ret;
1868
1869 *out_mad = *in_mad;
1870 if (smp->class_version != 1) {
1871 smp->status |= IB_SMP_UNSUP_VERSION;
1872 ret = reply(smp);
1873 goto bail;
1874 }
1875
1876 ret = check_mkey(ibp, smp, mad_flags);
1877 if (ret) {
1878 u32 port_num = be32_to_cpu(smp->attr_mod);
1879
1880 /*
1881 * If this is a get/set portinfo, we already check the
1882 * M_Key if the MAD is for another port and the M_Key
1883 * is OK on the receiving port. This check is needed
1884 * to increment the error counters when the M_Key
1885 * fails to match on *both* ports.
1886 */
1887 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
1888 (smp->method == IB_MGMT_METHOD_GET ||
1889 smp->method == IB_MGMT_METHOD_SET) &&
1890 port_num && port_num <= ibdev->phys_port_cnt &&
1891 port != port_num)
1892 (void) check_mkey(to_iport(ibdev, port_num), smp, 0);
1893 ret = IB_MAD_RESULT_FAILURE;
1894 goto bail;
1895 }
1896
1897 switch (smp->method) {
1898 case IB_MGMT_METHOD_GET:
1899 switch (smp->attr_id) {
1900 case IB_SMP_ATTR_NODE_DESC:
1901 ret = subn_get_nodedescription(smp, ibdev);
1902 goto bail;
1903 case IB_SMP_ATTR_NODE_INFO:
1904 ret = subn_get_nodeinfo(smp, ibdev, port);
1905 goto bail;
1906 case IB_SMP_ATTR_GUID_INFO:
1907 ret = subn_get_guidinfo(smp, ibdev, port);
1908 goto bail;
1909 case IB_SMP_ATTR_PORT_INFO:
1910 ret = subn_get_portinfo(smp, ibdev, port);
1911 goto bail;
1912 case IB_SMP_ATTR_PKEY_TABLE:
1913 ret = subn_get_pkeytable(smp, ibdev, port);
1914 goto bail;
1915 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1916 ret = subn_get_sl_to_vl(smp, ibdev, port);
1917 goto bail;
1918 case IB_SMP_ATTR_VL_ARB_TABLE:
1919 ret = subn_get_vl_arb(smp, ibdev, port);
1920 goto bail;
1921 case IB_SMP_ATTR_SM_INFO:
1922 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) {
1923 ret = IB_MAD_RESULT_SUCCESS |
1924 IB_MAD_RESULT_CONSUMED;
1925 goto bail;
1926 }
1927 if (ibp->rvp.port_cap_flags & IB_PORT_SM) {
1928 ret = IB_MAD_RESULT_SUCCESS;
1929 goto bail;
1930 }
1931 /* FALLTHROUGH */
1932 default:
1933 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1934 ret = reply(smp);
1935 goto bail;
1936 }
1937
1938 case IB_MGMT_METHOD_SET:
1939 switch (smp->attr_id) {
1940 case IB_SMP_ATTR_GUID_INFO:
1941 ret = subn_set_guidinfo(smp, ibdev, port);
1942 goto bail;
1943 case IB_SMP_ATTR_PORT_INFO:
1944 ret = subn_set_portinfo(smp, ibdev, port);
1945 goto bail;
1946 case IB_SMP_ATTR_PKEY_TABLE:
1947 ret = subn_set_pkeytable(smp, ibdev, port);
1948 goto bail;
1949 case IB_SMP_ATTR_SL_TO_VL_TABLE:
1950 ret = subn_set_sl_to_vl(smp, ibdev, port);
1951 goto bail;
1952 case IB_SMP_ATTR_VL_ARB_TABLE:
1953 ret = subn_set_vl_arb(smp, ibdev, port);
1954 goto bail;
1955 case IB_SMP_ATTR_SM_INFO:
1956 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) {
1957 ret = IB_MAD_RESULT_SUCCESS |
1958 IB_MAD_RESULT_CONSUMED;
1959 goto bail;
1960 }
1961 if (ibp->rvp.port_cap_flags & IB_PORT_SM) {
1962 ret = IB_MAD_RESULT_SUCCESS;
1963 goto bail;
1964 }
1965 /* FALLTHROUGH */
1966 default:
1967 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1968 ret = reply(smp);
1969 goto bail;
1970 }
1971
1972 case IB_MGMT_METHOD_TRAP_REPRESS:
1973 if (smp->attr_id == IB_SMP_ATTR_NOTICE)
1974 ret = subn_trap_repress(smp, ibdev, port);
1975 else {
1976 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1977 ret = reply(smp);
1978 }
1979 goto bail;
1980
1981 case IB_MGMT_METHOD_TRAP:
1982 case IB_MGMT_METHOD_REPORT:
1983 case IB_MGMT_METHOD_REPORT_RESP:
1984 case IB_MGMT_METHOD_GET_RESP:
1985 /*
1986 * The ib_mad module will call us to process responses
1987 * before checking for other consumers.
1988 * Just tell the caller to process it normally.
1989 */
1990 ret = IB_MAD_RESULT_SUCCESS;
1991 goto bail;
1992
1993 case IB_MGMT_METHOD_SEND:
1994 if (ib_get_smp_direction(smp) &&
1995 smp->attr_id == QIB_VENDOR_IPG) {
1996 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT,
1997 smp->data[0]);
1998 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1999 } else
2000 ret = IB_MAD_RESULT_SUCCESS;
2001 goto bail;
2002
2003 default:
2004 smp->status |= IB_SMP_UNSUP_METHOD;
2005 ret = reply(smp);
2006 }
2007
2008 bail:
2009 return ret;
2010 }
2011
process_perf(struct ib_device * ibdev,u8 port,const struct ib_mad * in_mad,struct ib_mad * out_mad)2012 static int process_perf(struct ib_device *ibdev, u8 port,
2013 const struct ib_mad *in_mad,
2014 struct ib_mad *out_mad)
2015 {
2016 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
2017 int ret;
2018
2019 *out_mad = *in_mad;
2020 if (pmp->mad_hdr.class_version != 1) {
2021 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
2022 ret = reply((struct ib_smp *) pmp);
2023 goto bail;
2024 }
2025
2026 switch (pmp->mad_hdr.method) {
2027 case IB_MGMT_METHOD_GET:
2028 switch (pmp->mad_hdr.attr_id) {
2029 case IB_PMA_CLASS_PORT_INFO:
2030 ret = pma_get_classportinfo(pmp, ibdev);
2031 goto bail;
2032 case IB_PMA_PORT_SAMPLES_CONTROL:
2033 ret = pma_get_portsamplescontrol(pmp, ibdev, port);
2034 goto bail;
2035 case IB_PMA_PORT_SAMPLES_RESULT:
2036 ret = pma_get_portsamplesresult(pmp, ibdev, port);
2037 goto bail;
2038 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
2039 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port);
2040 goto bail;
2041 case IB_PMA_PORT_COUNTERS:
2042 ret = pma_get_portcounters(pmp, ibdev, port);
2043 goto bail;
2044 case IB_PMA_PORT_COUNTERS_EXT:
2045 ret = pma_get_portcounters_ext(pmp, ibdev, port);
2046 goto bail;
2047 case IB_PMA_PORT_COUNTERS_CONG:
2048 ret = pma_get_portcounters_cong(pmp, ibdev, port);
2049 goto bail;
2050 default:
2051 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
2052 ret = reply((struct ib_smp *) pmp);
2053 goto bail;
2054 }
2055
2056 case IB_MGMT_METHOD_SET:
2057 switch (pmp->mad_hdr.attr_id) {
2058 case IB_PMA_PORT_SAMPLES_CONTROL:
2059 ret = pma_set_portsamplescontrol(pmp, ibdev, port);
2060 goto bail;
2061 case IB_PMA_PORT_COUNTERS:
2062 ret = pma_set_portcounters(pmp, ibdev, port);
2063 goto bail;
2064 case IB_PMA_PORT_COUNTERS_EXT:
2065 ret = pma_set_portcounters_ext(pmp, ibdev, port);
2066 goto bail;
2067 case IB_PMA_PORT_COUNTERS_CONG:
2068 ret = pma_set_portcounters_cong(pmp, ibdev, port);
2069 goto bail;
2070 default:
2071 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
2072 ret = reply((struct ib_smp *) pmp);
2073 goto bail;
2074 }
2075
2076 case IB_MGMT_METHOD_TRAP:
2077 case IB_MGMT_METHOD_GET_RESP:
2078 /*
2079 * The ib_mad module will call us to process responses
2080 * before checking for other consumers.
2081 * Just tell the caller to process it normally.
2082 */
2083 ret = IB_MAD_RESULT_SUCCESS;
2084 goto bail;
2085
2086 default:
2087 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
2088 ret = reply((struct ib_smp *) pmp);
2089 }
2090
2091 bail:
2092 return ret;
2093 }
2094
cc_get_classportinfo(struct ib_cc_mad * ccp,struct ib_device * ibdev)2095 static int cc_get_classportinfo(struct ib_cc_mad *ccp,
2096 struct ib_device *ibdev)
2097 {
2098 struct ib_cc_classportinfo_attr *p =
2099 (struct ib_cc_classportinfo_attr *)ccp->mgmt_data;
2100
2101 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
2102
2103 p->base_version = 1;
2104 p->class_version = 1;
2105 p->cap_mask = 0;
2106
2107 /*
2108 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2109 */
2110 p->resp_time_value = 18;
2111
2112 return reply((struct ib_smp *) ccp);
2113 }
2114
cc_get_congestion_info(struct ib_cc_mad * ccp,struct ib_device * ibdev,u8 port)2115 static int cc_get_congestion_info(struct ib_cc_mad *ccp,
2116 struct ib_device *ibdev, u8 port)
2117 {
2118 struct ib_cc_info_attr *p =
2119 (struct ib_cc_info_attr *)ccp->mgmt_data;
2120 struct qib_ibport *ibp = to_iport(ibdev, port);
2121 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2122
2123 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
2124
2125 p->congestion_info = 0;
2126 p->control_table_cap = ppd->cc_max_table_entries;
2127
2128 return reply((struct ib_smp *) ccp);
2129 }
2130
cc_get_congestion_setting(struct ib_cc_mad * ccp,struct ib_device * ibdev,u8 port)2131 static int cc_get_congestion_setting(struct ib_cc_mad *ccp,
2132 struct ib_device *ibdev, u8 port)
2133 {
2134 int i;
2135 struct ib_cc_congestion_setting_attr *p =
2136 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data;
2137 struct qib_ibport *ibp = to_iport(ibdev, port);
2138 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2139 struct ib_cc_congestion_entry_shadow *entries;
2140
2141 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
2142
2143 spin_lock(&ppd->cc_shadow_lock);
2144
2145 entries = ppd->congestion_entries_shadow->entries;
2146 p->port_control = cpu_to_be16(
2147 ppd->congestion_entries_shadow->port_control);
2148 p->control_map = cpu_to_be16(
2149 ppd->congestion_entries_shadow->control_map);
2150 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) {
2151 p->entries[i].ccti_increase = entries[i].ccti_increase;
2152 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
2153 p->entries[i].trigger_threshold = entries[i].trigger_threshold;
2154 p->entries[i].ccti_min = entries[i].ccti_min;
2155 }
2156
2157 spin_unlock(&ppd->cc_shadow_lock);
2158
2159 return reply((struct ib_smp *) ccp);
2160 }
2161
cc_get_congestion_control_table(struct ib_cc_mad * ccp,struct ib_device * ibdev,u8 port)2162 static int cc_get_congestion_control_table(struct ib_cc_mad *ccp,
2163 struct ib_device *ibdev, u8 port)
2164 {
2165 struct ib_cc_table_attr *p =
2166 (struct ib_cc_table_attr *)ccp->mgmt_data;
2167 struct qib_ibport *ibp = to_iport(ibdev, port);
2168 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2169 u32 cct_block_index = be32_to_cpu(ccp->attr_mod);
2170 u32 max_cct_block;
2171 u32 cct_entry;
2172 struct ib_cc_table_entry_shadow *entries;
2173 int i;
2174
2175 /* Is the table index more than what is supported? */
2176 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1)
2177 goto bail;
2178
2179 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
2180
2181 spin_lock(&ppd->cc_shadow_lock);
2182
2183 max_cct_block =
2184 (ppd->ccti_entries_shadow->ccti_last_entry + 1)/IB_CCT_ENTRIES;
2185 max_cct_block = max_cct_block ? max_cct_block - 1 : 0;
2186
2187 if (cct_block_index > max_cct_block) {
2188 spin_unlock(&ppd->cc_shadow_lock);
2189 goto bail;
2190 }
2191
2192 ccp->attr_mod = cpu_to_be32(cct_block_index);
2193
2194 cct_entry = IB_CCT_ENTRIES * (cct_block_index + 1);
2195
2196 cct_entry--;
2197
2198 p->ccti_limit = cpu_to_be16(cct_entry);
2199
2200 entries = &ppd->ccti_entries_shadow->
2201 entries[IB_CCT_ENTRIES * cct_block_index];
2202 cct_entry %= IB_CCT_ENTRIES;
2203
2204 for (i = 0; i <= cct_entry; i++)
2205 p->ccti_entries[i].entry = cpu_to_be16(entries[i].entry);
2206
2207 spin_unlock(&ppd->cc_shadow_lock);
2208
2209 return reply((struct ib_smp *) ccp);
2210
2211 bail:
2212 return reply_failure((struct ib_smp *) ccp);
2213 }
2214
cc_set_congestion_setting(struct ib_cc_mad * ccp,struct ib_device * ibdev,u8 port)2215 static int cc_set_congestion_setting(struct ib_cc_mad *ccp,
2216 struct ib_device *ibdev, u8 port)
2217 {
2218 struct ib_cc_congestion_setting_attr *p =
2219 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data;
2220 struct qib_ibport *ibp = to_iport(ibdev, port);
2221 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2222 int i;
2223
2224 ppd->cc_sl_control_map = be16_to_cpu(p->control_map);
2225
2226 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) {
2227 ppd->congestion_entries[i].ccti_increase =
2228 p->entries[i].ccti_increase;
2229
2230 ppd->congestion_entries[i].ccti_timer =
2231 be16_to_cpu(p->entries[i].ccti_timer);
2232
2233 ppd->congestion_entries[i].trigger_threshold =
2234 p->entries[i].trigger_threshold;
2235
2236 ppd->congestion_entries[i].ccti_min =
2237 p->entries[i].ccti_min;
2238 }
2239
2240 return reply((struct ib_smp *) ccp);
2241 }
2242
cc_set_congestion_control_table(struct ib_cc_mad * ccp,struct ib_device * ibdev,u8 port)2243 static int cc_set_congestion_control_table(struct ib_cc_mad *ccp,
2244 struct ib_device *ibdev, u8 port)
2245 {
2246 struct ib_cc_table_attr *p =
2247 (struct ib_cc_table_attr *)ccp->mgmt_data;
2248 struct qib_ibport *ibp = to_iport(ibdev, port);
2249 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2250 u32 cct_block_index = be32_to_cpu(ccp->attr_mod);
2251 u32 cct_entry;
2252 struct ib_cc_table_entry_shadow *entries;
2253 int i;
2254
2255 /* Is the table index more than what is supported? */
2256 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1)
2257 goto bail;
2258
2259 /* If this packet is the first in the sequence then
2260 * zero the total table entry count.
2261 */
2262 if (be16_to_cpu(p->ccti_limit) < IB_CCT_ENTRIES)
2263 ppd->total_cct_entry = 0;
2264
2265 cct_entry = (be16_to_cpu(p->ccti_limit))%IB_CCT_ENTRIES;
2266
2267 /* ccti_limit is 0 to 63 */
2268 ppd->total_cct_entry += (cct_entry + 1);
2269
2270 if (ppd->total_cct_entry > ppd->cc_supported_table_entries)
2271 goto bail;
2272
2273 ppd->ccti_limit = be16_to_cpu(p->ccti_limit);
2274
2275 entries = ppd->ccti_entries + (IB_CCT_ENTRIES * cct_block_index);
2276
2277 for (i = 0; i <= cct_entry; i++)
2278 entries[i].entry = be16_to_cpu(p->ccti_entries[i].entry);
2279
2280 spin_lock(&ppd->cc_shadow_lock);
2281
2282 ppd->ccti_entries_shadow->ccti_last_entry = ppd->total_cct_entry - 1;
2283 memcpy(ppd->ccti_entries_shadow->entries, ppd->ccti_entries,
2284 (ppd->total_cct_entry * sizeof(struct ib_cc_table_entry)));
2285
2286 ppd->congestion_entries_shadow->port_control = IB_CC_CCS_PC_SL_BASED;
2287 ppd->congestion_entries_shadow->control_map = ppd->cc_sl_control_map;
2288 memcpy(ppd->congestion_entries_shadow->entries, ppd->congestion_entries,
2289 IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry));
2290
2291 spin_unlock(&ppd->cc_shadow_lock);
2292
2293 return reply((struct ib_smp *) ccp);
2294
2295 bail:
2296 return reply_failure((struct ib_smp *) ccp);
2297 }
2298
check_cc_key(struct qib_ibport * ibp,struct ib_cc_mad * ccp,int mad_flags)2299 static int check_cc_key(struct qib_ibport *ibp,
2300 struct ib_cc_mad *ccp, int mad_flags)
2301 {
2302 return 0;
2303 }
2304
process_cc(struct ib_device * ibdev,int mad_flags,u8 port,const struct ib_mad * in_mad,struct ib_mad * out_mad)2305 static int process_cc(struct ib_device *ibdev, int mad_flags,
2306 u8 port, const struct ib_mad *in_mad,
2307 struct ib_mad *out_mad)
2308 {
2309 struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad;
2310 struct qib_ibport *ibp = to_iport(ibdev, port);
2311 int ret;
2312
2313 *out_mad = *in_mad;
2314
2315 if (ccp->class_version != 2) {
2316 ccp->status |= IB_SMP_UNSUP_VERSION;
2317 ret = reply((struct ib_smp *)ccp);
2318 goto bail;
2319 }
2320
2321 ret = check_cc_key(ibp, ccp, mad_flags);
2322 if (ret)
2323 goto bail;
2324
2325 switch (ccp->method) {
2326 case IB_MGMT_METHOD_GET:
2327 switch (ccp->attr_id) {
2328 case IB_CC_ATTR_CLASSPORTINFO:
2329 ret = cc_get_classportinfo(ccp, ibdev);
2330 goto bail;
2331
2332 case IB_CC_ATTR_CONGESTION_INFO:
2333 ret = cc_get_congestion_info(ccp, ibdev, port);
2334 goto bail;
2335
2336 case IB_CC_ATTR_CA_CONGESTION_SETTING:
2337 ret = cc_get_congestion_setting(ccp, ibdev, port);
2338 goto bail;
2339
2340 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
2341 ret = cc_get_congestion_control_table(ccp, ibdev, port);
2342 goto bail;
2343
2344 /* FALLTHROUGH */
2345 default:
2346 ccp->status |= IB_SMP_UNSUP_METH_ATTR;
2347 ret = reply((struct ib_smp *) ccp);
2348 goto bail;
2349 }
2350
2351 case IB_MGMT_METHOD_SET:
2352 switch (ccp->attr_id) {
2353 case IB_CC_ATTR_CA_CONGESTION_SETTING:
2354 ret = cc_set_congestion_setting(ccp, ibdev, port);
2355 goto bail;
2356
2357 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
2358 ret = cc_set_congestion_control_table(ccp, ibdev, port);
2359 goto bail;
2360
2361 /* FALLTHROUGH */
2362 default:
2363 ccp->status |= IB_SMP_UNSUP_METH_ATTR;
2364 ret = reply((struct ib_smp *) ccp);
2365 goto bail;
2366 }
2367
2368 case IB_MGMT_METHOD_GET_RESP:
2369 /*
2370 * The ib_mad module will call us to process responses
2371 * before checking for other consumers.
2372 * Just tell the caller to process it normally.
2373 */
2374 ret = IB_MAD_RESULT_SUCCESS;
2375 goto bail;
2376
2377 case IB_MGMT_METHOD_TRAP:
2378 default:
2379 ccp->status |= IB_SMP_UNSUP_METHOD;
2380 ret = reply((struct ib_smp *) ccp);
2381 }
2382
2383 bail:
2384 return ret;
2385 }
2386
2387 /**
2388 * qib_process_mad - process an incoming MAD packet
2389 * @ibdev: the infiniband device this packet came in on
2390 * @mad_flags: MAD flags
2391 * @port: the port number this packet came in on
2392 * @in_wc: the work completion entry for this packet
2393 * @in_grh: the global route header for this packet
2394 * @in_mad: the incoming MAD
2395 * @out_mad: any outgoing MAD reply
2396 *
2397 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
2398 * interested in processing.
2399 *
2400 * Note that the verbs framework has already done the MAD sanity checks,
2401 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
2402 * MADs.
2403 *
2404 * This is called by the ib_mad module.
2405 */
qib_process_mad(struct ib_device * ibdev,int mad_flags,u8 port,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad_hdr * in,size_t in_mad_size,struct ib_mad_hdr * out,size_t * out_mad_size,u16 * out_mad_pkey_index)2406 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
2407 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
2408 const struct ib_mad_hdr *in, size_t in_mad_size,
2409 struct ib_mad_hdr *out, size_t *out_mad_size,
2410 u16 *out_mad_pkey_index)
2411 {
2412 int ret;
2413 struct qib_ibport *ibp = to_iport(ibdev, port);
2414 struct qib_pportdata *ppd = ppd_from_ibp(ibp);
2415 const struct ib_mad *in_mad = (const struct ib_mad *)in;
2416 struct ib_mad *out_mad = (struct ib_mad *)out;
2417
2418 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
2419 *out_mad_size != sizeof(*out_mad)))
2420 return IB_MAD_RESULT_FAILURE;
2421
2422 switch (in_mad->mad_hdr.mgmt_class) {
2423 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
2424 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
2425 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
2426 goto bail;
2427
2428 case IB_MGMT_CLASS_PERF_MGMT:
2429 ret = process_perf(ibdev, port, in_mad, out_mad);
2430 goto bail;
2431
2432 case IB_MGMT_CLASS_CONG_MGMT:
2433 if (!ppd->congestion_entries_shadow ||
2434 !qib_cc_table_size) {
2435 ret = IB_MAD_RESULT_SUCCESS;
2436 goto bail;
2437 }
2438 ret = process_cc(ibdev, mad_flags, port, in_mad, out_mad);
2439 goto bail;
2440
2441 default:
2442 ret = IB_MAD_RESULT_SUCCESS;
2443 }
2444
2445 bail:
2446 return ret;
2447 }
2448
xmit_wait_timer_func(struct timer_list * t)2449 static void xmit_wait_timer_func(struct timer_list *t)
2450 {
2451 struct qib_pportdata *ppd = from_timer(ppd, t, cong_stats.timer);
2452 struct qib_devdata *dd = dd_from_ppd(ppd);
2453 unsigned long flags;
2454 u8 status;
2455
2456 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags);
2457 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) {
2458 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT);
2459 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
2460 /* save counter cache */
2461 cache_hw_sample_counters(ppd);
2462 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER;
2463 } else
2464 goto done;
2465 }
2466 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd);
2467 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0);
2468 done:
2469 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags);
2470 mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
2471 }
2472
qib_notify_create_mad_agent(struct rvt_dev_info * rdi,int port_idx)2473 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx)
2474 {
2475 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
2476 struct qib_devdata *dd = container_of(ibdev,
2477 struct qib_devdata, verbs_dev);
2478
2479 /* Initialize xmit_wait structure */
2480 dd->pport[port_idx].cong_stats.counter = 0;
2481 timer_setup(&dd->pport[port_idx].cong_stats.timer,
2482 xmit_wait_timer_func, 0);
2483 dd->pport[port_idx].cong_stats.timer.expires = 0;
2484 add_timer(&dd->pport[port_idx].cong_stats.timer);
2485 }
2486
qib_notify_free_mad_agent(struct rvt_dev_info * rdi,int port_idx)2487 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx)
2488 {
2489 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
2490 struct qib_devdata *dd = container_of(ibdev,
2491 struct qib_devdata, verbs_dev);
2492
2493 if (dd->pport[port_idx].cong_stats.timer.function)
2494 del_timer_sync(&dd->pport[port_idx].cong_stats.timer);
2495
2496 if (dd->pport[port_idx].ibport_data.smi_ah)
2497 rdma_destroy_ah(&dd->pport[port_idx].ibport_data.smi_ah->ibah,
2498 RDMA_DESTROY_AH_SLEEPABLE);
2499 }
2500
