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pcmcia: CompactFlash driver for PA Semi Electra boards
[pv_ops_mirror.git] / drivers / infiniband / hw / ipath / ipath_mad.c
blob3d1432d1e3f40dbe7a3da11e7dbde429c21c7e19
1 /*
2 * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
3 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <rdma/ib_smi.h>
35
36 #include "ipath_kernel.h"
37 #include "ipath_verbs.h"
38 #include "ipath_common.h"
39
40 #define IB_SMP_UNSUP_VERSION __constant_htons(0x0004)
41 #define IB_SMP_UNSUP_METHOD __constant_htons(0x0008)
42 #define IB_SMP_UNSUP_METH_ATTR __constant_htons(0x000C)
43 #define IB_SMP_INVALID_FIELD __constant_htons(0x001C)
44
45 static int reply(struct ib_smp *smp)
46 {
47 /*
48 * The verbs framework will handle the directed/LID route
49 * packet changes.
50 */
51 smp->method = IB_MGMT_METHOD_GET_RESP;
52 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
53 smp->status |= IB_SMP_DIRECTION;
54 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
55 }
56
57 static int recv_subn_get_nodedescription(struct ib_smp *smp,
58 struct ib_device *ibdev)
59 {
60 if (smp->attr_mod)
61 smp->status |= IB_SMP_INVALID_FIELD;
62
63 strncpy(smp->data, ibdev->node_desc, sizeof(smp->data));
64
65 return reply(smp);
66 }
67
68 struct nodeinfo {
69 u8 base_version;
70 u8 class_version;
71 u8 node_type;
72 u8 num_ports;
73 __be64 sys_guid;
74 __be64 node_guid;
75 __be64 port_guid;
76 __be16 partition_cap;
77 __be16 device_id;
78 __be32 revision;
79 u8 local_port_num;
80 u8 vendor_id[3];
81 } __attribute__ ((packed));
82
83 static int recv_subn_get_nodeinfo(struct ib_smp *smp,
84 struct ib_device *ibdev, u8 port)
85 {
86 struct nodeinfo *nip = (struct nodeinfo *)&smp->data;
87 struct ipath_devdata *dd = to_idev(ibdev)->dd;
88 u32 vendor, majrev, minrev;
89
90 /* GUID 0 is illegal */
91 if (smp->attr_mod || (dd->ipath_guid == 0))
92 smp->status |= IB_SMP_INVALID_FIELD;
93
94 nip->base_version = 1;
95 nip->class_version = 1;
96 nip->node_type = 1; /* channel adapter */
97 /*
98 * XXX The num_ports value will need a layer function to get
99 * the value if we ever have more than one IB port on a chip.
100 * We will also need to get the GUID for the port.
101 */
102 nip->num_ports = ibdev->phys_port_cnt;
103 /* This is already in network order */
104 nip->sys_guid = to_idev(ibdev)->sys_image_guid;
105 nip->node_guid = dd->ipath_guid;
106 nip->port_guid = dd->ipath_guid;
107 nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd));
108 nip->device_id = cpu_to_be16(dd->ipath_deviceid);
109 majrev = dd->ipath_majrev;
110 minrev = dd->ipath_minrev;
111 nip->revision = cpu_to_be32((majrev << 16) | minrev);
112 nip->local_port_num = port;
113 vendor = dd->ipath_vendorid;
114 nip->vendor_id[0] = 0;
115 nip->vendor_id[1] = vendor >> 8;
116 nip->vendor_id[2] = vendor;
117
118 return reply(smp);
119 }
120
121 static int recv_subn_get_guidinfo(struct ib_smp *smp,
122 struct ib_device *ibdev)
123 {
124 u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
125 __be64 *p = (__be64 *) smp->data;
126
127 /* 32 blocks of 8 64-bit GUIDs per block */
128
129 memset(smp->data, 0, sizeof(smp->data));
130
131 /*
132 * We only support one GUID for now. If this changes, the
133 * portinfo.guid_cap field needs to be updated too.
134 */
135 if (startgx == 0) {
136 __be64 g = to_idev(ibdev)->dd->ipath_guid;
137 if (g == 0)
138 /* GUID 0 is illegal */
139 smp->status |= IB_SMP_INVALID_FIELD;
140 else
141 /* The first is a copy of the read-only HW GUID. */
142 *p = g;
143 } else
144 smp->status |= IB_SMP_INVALID_FIELD;
145
146 return reply(smp);
147 }
148
149
150 static int get_overrunthreshold(struct ipath_devdata *dd)
151 {
152 return (dd->ipath_ibcctrl >>
153 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
154 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
155 }
156
157 /**
158 * set_overrunthreshold - set the overrun threshold
159 * @dd: the infinipath device
160 * @n: the new threshold
161 *
162 * Note that this will only take effect when the link state changes.
163 */
164 static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n)
165 {
166 unsigned v;
167
168 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
169 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
170 if (v != n) {
171 dd->ipath_ibcctrl &=
172 ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK <<
173 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT);
174 dd->ipath_ibcctrl |=
175 (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT;
176 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
177 dd->ipath_ibcctrl);
178 }
179 return 0;
180 }
181
182 static int get_phyerrthreshold(struct ipath_devdata *dd)
183 {
184 return (dd->ipath_ibcctrl >>
185 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
186 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
187 }
188
189 /**
190 * set_phyerrthreshold - set the physical error threshold
191 * @dd: the infinipath device
192 * @n: the new threshold
193 *
194 * Note that this will only take effect when the link state changes.
195 */
196 static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n)
197 {
198 unsigned v;
199
200 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
201 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
202 if (v != n) {
203 dd->ipath_ibcctrl &=
204 ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK <<
205 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT);
206 dd->ipath_ibcctrl |=
207 (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT;
208 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
209 dd->ipath_ibcctrl);
210 }
211 return 0;
212 }
213
214 /**
215 * get_linkdowndefaultstate - get the default linkdown state
216 * @dd: the infinipath device
217 *
218 * Returns zero if the default is POLL, 1 if the default is SLEEP.
219 */
220 static int get_linkdowndefaultstate(struct ipath_devdata *dd)
221 {
222 return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE);
223 }
224
225 static int recv_subn_get_portinfo(struct ib_smp *smp,
226 struct ib_device *ibdev, u8 port)
227 {
228 struct ipath_ibdev *dev;
229 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
230 u16 lid;
231 u8 ibcstat;
232 u8 mtu;
233 int ret;
234
235 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) {
236 smp->status |= IB_SMP_INVALID_FIELD;
237 ret = reply(smp);
238 goto bail;
239 }
240
241 dev = to_idev(ibdev);
242
243 /* Clear all fields. Only set the non-zero fields. */
244 memset(smp->data, 0, sizeof(smp->data));
245
246 /* Only return the mkey if the protection field allows it. */
247 if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey ||
248 dev->mkeyprot == 0)
249 pip->mkey = dev->mkey;
250 pip->gid_prefix = dev->gid_prefix;
251 lid = dev->dd->ipath_lid;
252 pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
253 pip->sm_lid = cpu_to_be16(dev->sm_lid);
254 pip->cap_mask = cpu_to_be32(dev->port_cap_flags);
255 /* pip->diag_code; */
256 pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period);
257 pip->local_port_num = port;
258 pip->link_width_enabled = dev->link_width_enabled;
259 pip->link_width_supported = 3; /* 1x or 4x */
260 pip->link_width_active = 2; /* 4x */
261 pip->linkspeed_portstate = 0x10; /* 2.5Gbps */
262 ibcstat = dev->dd->ipath_lastibcstat;
263 pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1;
264 pip->portphysstate_linkdown =
265 (ipath_cvt_physportstate[ibcstat & 0xf] << 4) |
266 (get_linkdowndefaultstate(dev->dd) ? 1 : 2);
267 pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dev->dd->ipath_lmc;
268 pip->linkspeedactive_enabled = 0x11; /* 2.5Gbps, 2.5Gbps */
269 switch (dev->dd->ipath_ibmtu) {
270 case 4096:
271 mtu = IB_MTU_4096;
272 break;
273 case 2048:
274 mtu = IB_MTU_2048;
275 break;
276 case 1024:
277 mtu = IB_MTU_1024;
278 break;
279 case 512:
280 mtu = IB_MTU_512;
281 break;
282 case 256:
283 mtu = IB_MTU_256;
284 break;
285 default: /* oops, something is wrong */
286 mtu = IB_MTU_2048;
287 break;
288 }
289 pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl;
290 pip->vlcap_inittype = 0x10; /* VLCap = VL0, InitType = 0 */
291 pip->vl_high_limit = dev->vl_high_limit;
292 /* pip->vl_arb_high_cap; // only one VL */
293 /* pip->vl_arb_low_cap; // only one VL */
294 /* InitTypeReply = 0 */
295 /*
296 * Note: the chips support a maximum MTU of 4096, but the driver
297 * hasn't implemented this feature yet, so set the maximum value
298 * to 2048.
299 */
300 pip->inittypereply_mtucap = IB_MTU_2048;
301 // HCAs ignore VLStallCount and HOQLife
302 /* pip->vlstallcnt_hoqlife; */
303 pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */
304 pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
305 /* P_KeyViolations are counted by hardware. */
306 pip->pkey_violations =
307 cpu_to_be16((ipath_get_cr_errpkey(dev->dd) -
308 dev->z_pkey_violations) & 0xFFFF);
309 pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
310 /* Only the hardware GUID is supported for now */
311 pip->guid_cap = 1;
312 pip->clientrereg_resv_subnetto = dev->subnet_timeout;
313 /* 32.768 usec. response time (guessing) */
314 pip->resv_resptimevalue = 3;
315 pip->localphyerrors_overrunerrors =
316 (get_phyerrthreshold(dev->dd) << 4) |
317 get_overrunthreshold(dev->dd);
318 /* pip->max_credit_hint; */
319 /* pip->link_roundtrip_latency[3]; */
320
321 ret = reply(smp);
322
323 bail:
324 return ret;
325 }
326
327 /**
328 * get_pkeys - return the PKEY table for port 0
329 * @dd: the infinipath device
330 * @pkeys: the pkey table is placed here
331 */
332 static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
333 {
334 struct ipath_portdata *pd = dd->ipath_pd[0];
335
336 memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
337
338 return 0;
339 }
340
341 static int recv_subn_get_pkeytable(struct ib_smp *smp,
342 struct ib_device *ibdev)
343 {
344 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
345 u16 *p = (u16 *) smp->data;
346 __be16 *q = (__be16 *) smp->data;
347
348 /* 64 blocks of 32 16-bit P_Key entries */
349
350 memset(smp->data, 0, sizeof(smp->data));
351 if (startpx == 0) {
352 struct ipath_ibdev *dev = to_idev(ibdev);
353 unsigned i, n = ipath_get_npkeys(dev->dd);
354
355 get_pkeys(dev->dd, p);
356
357 for (i = 0; i < n; i++)
358 q[i] = cpu_to_be16(p[i]);
359 } else
360 smp->status |= IB_SMP_INVALID_FIELD;
361
362 return reply(smp);
363 }
364
365 static int recv_subn_set_guidinfo(struct ib_smp *smp,
366 struct ib_device *ibdev)
367 {
368 /* The only GUID we support is the first read-only entry. */
369 return recv_subn_get_guidinfo(smp, ibdev);
370 }
371
372 /**
373 * set_linkdowndefaultstate - set the default linkdown state
374 * @dd: the infinipath device
375 * @sleep: the new state
376 *
377 * Note that this will only take effect when the link state changes.
378 */
379 static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep)
380 {
381 if (sleep)
382 dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
383 else
384 dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
385 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
386 dd->ipath_ibcctrl);
387 return 0;
388 }
389
390 /**
391 * recv_subn_set_portinfo - set port information
392 * @smp: the incoming SM packet
393 * @ibdev: the infiniband device
394 * @port: the port on the device
395 *
396 * Set Portinfo (see ch. 14.2.5.6).
397 */
398 static int recv_subn_set_portinfo(struct ib_smp *smp,
399 struct ib_device *ibdev, u8 port)
400 {
401 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
402 struct ib_event event;
403 struct ipath_ibdev *dev;
404 struct ipath_devdata *dd;
405 char clientrereg = 0;
406 u16 lid, smlid;
407 u8 lwe;
408 u8 lse;
409 u8 state;
410 u16 lstate;
411 u32 mtu;
412 int ret, ore;
413
414 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
415 goto err;
416
417 dev = to_idev(ibdev);
418 dd = dev->dd;
419 event.device = ibdev;
420 event.element.port_num = port;
421
422 dev->mkey = pip->mkey;
423 dev->gid_prefix = pip->gid_prefix;
424 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
425
426 lid = be16_to_cpu(pip->lid);
427 if (dd->ipath_lid != lid ||
428 dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) {
429 /* Must be a valid unicast LID address. */
430 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
431 goto err;
432 ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7);
433 event.event = IB_EVENT_LID_CHANGE;
434 ib_dispatch_event(&event);
435 }
436
437 smlid = be16_to_cpu(pip->sm_lid);
438 if (smlid != dev->sm_lid) {
439 /* Must be a valid unicast LID address. */
440 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE)
441 goto err;
442 dev->sm_lid = smlid;
443 event.event = IB_EVENT_SM_CHANGE;
444 ib_dispatch_event(&event);
445 }
446
447 /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
448 lwe = pip->link_width_enabled;
449 if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
450 goto err;
451 if (lwe == 0xFF)
452 dev->link_width_enabled = 3; /* 1x or 4x */
453 else if (lwe)
454 dev->link_width_enabled = lwe;
455
456 /* Only 2.5 Gbs supported. */
457 lse = pip->linkspeedactive_enabled & 0xF;
458 if (lse >= 2 && lse <= 0xE)
459 goto err;
460
461 /* Set link down default state. */
462 switch (pip->portphysstate_linkdown & 0xF) {
463 case 0: /* NOP */
464 break;
465 case 1: /* SLEEP */
466 if (set_linkdowndefaultstate(dd, 1))
467 goto err;
468 break;
469 case 2: /* POLL */
470 if (set_linkdowndefaultstate(dd, 0))
471 goto err;
472 break;
473 default:
474 goto err;
475 }
476
477 dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
478 dev->vl_high_limit = pip->vl_high_limit;
479
480 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
481 case IB_MTU_256:
482 mtu = 256;
483 break;
484 case IB_MTU_512:
485 mtu = 512;
486 break;
487 case IB_MTU_1024:
488 mtu = 1024;
489 break;
490 case IB_MTU_2048:
491 mtu = 2048;
492 break;
493 case IB_MTU_4096:
494 mtu = 4096;
495 break;
496 default:
497 /* XXX We have already partially updated our state! */
498 goto err;
499 }
500 ipath_set_mtu(dd, mtu);
501
502 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
503
504 /* We only support VL0 */
505 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
506 goto err;
507
508 if (pip->mkey_violations == 0)
509 dev->mkey_violations = 0;
510
511 /*
512 * Hardware counter can't be reset so snapshot and subtract
513 * later.
514 */
515 if (pip->pkey_violations == 0)
516 dev->z_pkey_violations = ipath_get_cr_errpkey(dd);
517
518 if (pip->qkey_violations == 0)
519 dev->qkey_violations = 0;
520
521 ore = pip->localphyerrors_overrunerrors;
522 if (set_phyerrthreshold(dd, (ore >> 4) & 0xF))
523 goto err;
524
525 if (set_overrunthreshold(dd, (ore & 0xF)))
526 goto err;
527
528 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
529
530 if (pip->clientrereg_resv_subnetto & 0x80) {
531 clientrereg = 1;
532 event.event = IB_EVENT_CLIENT_REREGISTER;
533 ib_dispatch_event(&event);
534 }
535
536 /*
537 * Do the port state change now that the other link parameters
538 * have been set.
539 * Changing the port physical state only makes sense if the link
540 * is down or is being set to down.
541 */
542 state = pip->linkspeed_portstate & 0xF;
543 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
544 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
545 goto err;
546
547 /*
548 * Only state changes of DOWN, ARM, and ACTIVE are valid
549 * and must be in the correct state to take effect (see 7.2.6).
550 */
551 switch (state) {
552 case IB_PORT_NOP:
553 if (lstate == 0)
554 break;
555 /* FALLTHROUGH */
556 case IB_PORT_DOWN:
557 if (lstate == 0)
558 if (get_linkdowndefaultstate(dd))
559 lstate = IPATH_IB_LINKDOWN_SLEEP;
560 else
561 lstate = IPATH_IB_LINKDOWN;
562 else if (lstate == 1)
563 lstate = IPATH_IB_LINKDOWN_SLEEP;
564 else if (lstate == 2)
565 lstate = IPATH_IB_LINKDOWN;
566 else if (lstate == 3)
567 lstate = IPATH_IB_LINKDOWN_DISABLE;
568 else
569 goto err;
570 ipath_set_linkstate(dd, lstate);
571 break;
572 case IB_PORT_ARMED:
573 ipath_set_linkstate(dd, IPATH_IB_LINKARM);
574 break;
575 case IB_PORT_ACTIVE:
576 ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE);
577 break;
578 default:
579 /* XXX We have already partially updated our state! */
580 goto err;
581 }
582
583 ret = recv_subn_get_portinfo(smp, ibdev, port);
584
585 if (clientrereg)
586 pip->clientrereg_resv_subnetto |= 0x80;
587
588 goto done;
589
590 err:
591 smp->status |= IB_SMP_INVALID_FIELD;
592 ret = recv_subn_get_portinfo(smp, ibdev, port);
593
594 done:
595 return ret;
596 }
597
598 /**
599 * rm_pkey - decrecment the reference count for the given PKEY
600 * @dd: the infinipath device
601 * @key: the PKEY index
602 *
603 * Return true if this was the last reference and the hardware table entry
604 * needs to be changed.
605 */
606 static int rm_pkey(struct ipath_devdata *dd, u16 key)
607 {
608 int i;
609 int ret;
610
611 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
612 if (dd->ipath_pkeys[i] != key)
613 continue;
614 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
615 dd->ipath_pkeys[i] = 0;
616 ret = 1;
617 goto bail;
618 }
619 break;
620 }
621
622 ret = 0;
623
624 bail:
625 return ret;
626 }
627
628 /**
629 * add_pkey - add the given PKEY to the hardware table
630 * @dd: the infinipath device
631 * @key: the PKEY
632 *
633 * Return an error code if unable to add the entry, zero if no change,
634 * or 1 if the hardware PKEY register needs to be updated.
635 */
636 static int add_pkey(struct ipath_devdata *dd, u16 key)
637 {
638 int i;
639 u16 lkey = key & 0x7FFF;
640 int any = 0;
641 int ret;
642
643 if (lkey == 0x7FFF) {
644 ret = 0;
645 goto bail;
646 }
647
648 /* Look for an empty slot or a matching PKEY. */
649 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
650 if (!dd->ipath_pkeys[i]) {
651 any++;
652 continue;
653 }
654 /* If it matches exactly, try to increment the ref count */
655 if (dd->ipath_pkeys[i] == key) {
656 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
657 ret = 0;
658 goto bail;
659 }
660 /* Lost the race. Look for an empty slot below. */
661 atomic_dec(&dd->ipath_pkeyrefs[i]);
662 any++;
663 }
664 /*
665 * It makes no sense to have both the limited and unlimited
666 * PKEY set at the same time since the unlimited one will
667 * disable the limited one.
668 */
669 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
670 ret = -EEXIST;
671 goto bail;
672 }
673 }
674 if (!any) {
675 ret = -EBUSY;
676 goto bail;
677 }
678 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
679 if (!dd->ipath_pkeys[i] &&
680 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
681 /* for ipathstats, etc. */
682 ipath_stats.sps_pkeys[i] = lkey;
683 dd->ipath_pkeys[i] = key;
684 ret = 1;
685 goto bail;
686 }
687 }
688 ret = -EBUSY;
689
690 bail:
691 return ret;
692 }
693
694 /**
695 * set_pkeys - set the PKEY table for port 0
696 * @dd: the infinipath device
697 * @pkeys: the PKEY table
698 */
699 static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
700 {
701 struct ipath_portdata *pd;
702 int i;
703 int changed = 0;
704
705 pd = dd->ipath_pd[0];
706
707 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
708 u16 key = pkeys[i];
709 u16 okey = pd->port_pkeys[i];
710
711 if (key == okey)
712 continue;
713 /*
714 * The value of this PKEY table entry is changing.
715 * Remove the old entry in the hardware's array of PKEYs.
716 */
717 if (okey & 0x7FFF)
718 changed |= rm_pkey(dd, okey);
719 if (key & 0x7FFF) {
720 int ret = add_pkey(dd, key);
721
722 if (ret < 0)
723 key = 0;
724 else
725 changed |= ret;
726 }
727 pd->port_pkeys[i] = key;
728 }
729 if (changed) {
730 u64 pkey;
731
732 pkey = (u64) dd->ipath_pkeys[0] |
733 ((u64) dd->ipath_pkeys[1] << 16) |
734 ((u64) dd->ipath_pkeys[2] << 32) |
735 ((u64) dd->ipath_pkeys[3] << 48);
736 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
737 (unsigned long long) pkey);
738 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
739 pkey);
740 }
741 return 0;
742 }
743
744 static int recv_subn_set_pkeytable(struct ib_smp *smp,
745 struct ib_device *ibdev)
746 {
747 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
748 __be16 *p = (__be16 *) smp->data;
749 u16 *q = (u16 *) smp->data;
750 struct ipath_ibdev *dev = to_idev(ibdev);
751 unsigned i, n = ipath_get_npkeys(dev->dd);
752
753 for (i = 0; i < n; i++)
754 q[i] = be16_to_cpu(p[i]);
755
756 if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
757 smp->status |= IB_SMP_INVALID_FIELD;
758
759 return recv_subn_get_pkeytable(smp, ibdev);
760 }
761
762 #define IB_PMA_CLASS_PORT_INFO __constant_htons(0x0001)
763 #define IB_PMA_PORT_SAMPLES_CONTROL __constant_htons(0x0010)
764 #define IB_PMA_PORT_SAMPLES_RESULT __constant_htons(0x0011)
765 #define IB_PMA_PORT_COUNTERS __constant_htons(0x0012)
766 #define IB_PMA_PORT_COUNTERS_EXT __constant_htons(0x001D)
767 #define IB_PMA_PORT_SAMPLES_RESULT_EXT __constant_htons(0x001E)
768
769 struct ib_perf {
770 u8 base_version;
771 u8 mgmt_class;
772 u8 class_version;
773 u8 method;
774 __be16 status;
775 __be16 unused;
776 __be64 tid;
777 __be16 attr_id;
778 __be16 resv;
779 __be32 attr_mod;
780 u8 reserved[40];
781 u8 data[192];
782 } __attribute__ ((packed));
783
784 struct ib_pma_classportinfo {
785 u8 base_version;
786 u8 class_version;
787 __be16 cap_mask;
788 u8 reserved[3];
789 u8 resp_time_value; /* only lower 5 bits */
790 union ib_gid redirect_gid;
791 __be32 redirect_tc_sl_fl; /* 8, 4, 20 bits respectively */
792 __be16 redirect_lid;
793 __be16 redirect_pkey;
794 __be32 redirect_qp; /* only lower 24 bits */
795 __be32 redirect_qkey;
796 union ib_gid trap_gid;
797 __be32 trap_tc_sl_fl; /* 8, 4, 20 bits respectively */
798 __be16 trap_lid;
799 __be16 trap_pkey;
800 __be32 trap_hl_qp; /* 8, 24 bits respectively */
801 __be32 trap_qkey;
802 } __attribute__ ((packed));
803
804 struct ib_pma_portsamplescontrol {
805 u8 opcode;
806 u8 port_select;
807 u8 tick;
808 u8 counter_width; /* only lower 3 bits */
809 __be32 counter_mask0_9; /* 2, 10 * 3, bits */
810 __be16 counter_mask10_14; /* 1, 5 * 3, bits */
811 u8 sample_mechanisms;
812 u8 sample_status; /* only lower 2 bits */
813 __be64 option_mask;
814 __be64 vendor_mask;
815 __be32 sample_start;
816 __be32 sample_interval;
817 __be16 tag;
818 __be16 counter_select[15];
819 } __attribute__ ((packed));
820
821 struct ib_pma_portsamplesresult {
822 __be16 tag;
823 __be16 sample_status; /* only lower 2 bits */
824 __be32 counter[15];
825 } __attribute__ ((packed));
826
827 struct ib_pma_portsamplesresult_ext {
828 __be16 tag;
829 __be16 sample_status; /* only lower 2 bits */
830 __be32 extended_width; /* only upper 2 bits */
831 __be64 counter[15];
832 } __attribute__ ((packed));
833
834 struct ib_pma_portcounters {
835 u8 reserved;
836 u8 port_select;
837 __be16 counter_select;
838 __be16 symbol_error_counter;
839 u8 link_error_recovery_counter;
840 u8 link_downed_counter;
841 __be16 port_rcv_errors;
842 __be16 port_rcv_remphys_errors;
843 __be16 port_rcv_switch_relay_errors;
844 __be16 port_xmit_discards;
845 u8 port_xmit_constraint_errors;
846 u8 port_rcv_constraint_errors;
847 u8 reserved1;
848 u8 lli_ebor_errors; /* 4, 4, bits */
849 __be16 reserved2;
850 __be16 vl15_dropped;
851 __be32 port_xmit_data;
852 __be32 port_rcv_data;
853 __be32 port_xmit_packets;
854 __be32 port_rcv_packets;
855 } __attribute__ ((packed));
856
857 #define IB_PMA_SEL_SYMBOL_ERROR __constant_htons(0x0001)
858 #define IB_PMA_SEL_LINK_ERROR_RECOVERY __constant_htons(0x0002)
859 #define IB_PMA_SEL_LINK_DOWNED __constant_htons(0x0004)
860 #define IB_PMA_SEL_PORT_RCV_ERRORS __constant_htons(0x0008)
861 #define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS __constant_htons(0x0010)
862 #define IB_PMA_SEL_PORT_XMIT_DISCARDS __constant_htons(0x0040)
863 #define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS __constant_htons(0x0200)
864 #define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS __constant_htons(0x0400)
865 #define IB_PMA_SEL_PORT_VL15_DROPPED __constant_htons(0x0800)
866 #define IB_PMA_SEL_PORT_XMIT_DATA __constant_htons(0x1000)
867 #define IB_PMA_SEL_PORT_RCV_DATA __constant_htons(0x2000)
868 #define IB_PMA_SEL_PORT_XMIT_PACKETS __constant_htons(0x4000)
869 #define IB_PMA_SEL_PORT_RCV_PACKETS __constant_htons(0x8000)
870
871 struct ib_pma_portcounters_ext {
872 u8 reserved;
873 u8 port_select;
874 __be16 counter_select;
875 __be32 reserved1;
876 __be64 port_xmit_data;
877 __be64 port_rcv_data;
878 __be64 port_xmit_packets;
879 __be64 port_rcv_packets;
880 __be64 port_unicast_xmit_packets;
881 __be64 port_unicast_rcv_packets;
882 __be64 port_multicast_xmit_packets;
883 __be64 port_multicast_rcv_packets;
884 } __attribute__ ((packed));
885
886 #define IB_PMA_SELX_PORT_XMIT_DATA __constant_htons(0x0001)
887 #define IB_PMA_SELX_PORT_RCV_DATA __constant_htons(0x0002)
888 #define IB_PMA_SELX_PORT_XMIT_PACKETS __constant_htons(0x0004)
889 #define IB_PMA_SELX_PORT_RCV_PACKETS __constant_htons(0x0008)
890 #define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS __constant_htons(0x0010)
891 #define IB_PMA_SELX_PORT_UNI_RCV_PACKETS __constant_htons(0x0020)
892 #define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS __constant_htons(0x0040)
893 #define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS __constant_htons(0x0080)
894
895 static int recv_pma_get_classportinfo(struct ib_perf *pmp)
896 {
897 struct ib_pma_classportinfo *p =
898 (struct ib_pma_classportinfo *)pmp->data;
899
900 memset(pmp->data, 0, sizeof(pmp->data));
901
902 if (pmp->attr_mod != 0)
903 pmp->status |= IB_SMP_INVALID_FIELD;
904
905 /* Indicate AllPortSelect is valid (only one port anyway) */
906 p->cap_mask = __constant_cpu_to_be16(1 << 8);
907 p->base_version = 1;
908 p->class_version = 1;
909 /*
910 * Expected response time is 4.096 usec. * 2^18 == 1.073741824
911 * sec.
912 */
913 p->resp_time_value = 18;
914
915 return reply((struct ib_smp *) pmp);
916 }
917
918 /*
919 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
920 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
921 * We support 5 counters which only count the mandatory quantities.
922 */
923 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
924 #define COUNTER_MASK0_9 \
925 __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
926 COUNTER_MASK(1, 1) | \
927 COUNTER_MASK(1, 2) | \
928 COUNTER_MASK(1, 3) | \
929 COUNTER_MASK(1, 4))
930
931 static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
932 struct ib_device *ibdev, u8 port)
933 {
934 struct ib_pma_portsamplescontrol *p =
935 (struct ib_pma_portsamplescontrol *)pmp->data;
936 struct ipath_ibdev *dev = to_idev(ibdev);
937 unsigned long flags;
938 u8 port_select = p->port_select;
939
940 memset(pmp->data, 0, sizeof(pmp->data));
941
942 p->port_select = port_select;
943 if (pmp->attr_mod != 0 ||
944 (port_select != port && port_select != 0xFF))
945 pmp->status |= IB_SMP_INVALID_FIELD;
946 /*
947 * Ticks are 10x the link transfer period which for 2.5Gbs is 4
948 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample
949 * intervals are counted in ticks. Since we use Linux timers, that
950 * count in jiffies, we can't sample for less than 1000 ticks if HZ
951 * == 1000 (4000 ticks if HZ is 250).
952 */
953 /* XXX This is WRONG. */
954 p->tick = 250; /* 1 usec. */
955 p->counter_width = 4; /* 32 bit counters */
956 p->counter_mask0_9 = COUNTER_MASK0_9;
957 spin_lock_irqsave(&dev->pending_lock, flags);
958 p->sample_status = dev->pma_sample_status;
959 p->sample_start = cpu_to_be32(dev->pma_sample_start);
960 p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
961 p->tag = cpu_to_be16(dev->pma_tag);
962 p->counter_select[0] = dev->pma_counter_select[0];
963 p->counter_select[1] = dev->pma_counter_select[1];
964 p->counter_select[2] = dev->pma_counter_select[2];
965 p->counter_select[3] = dev->pma_counter_select[3];
966 p->counter_select[4] = dev->pma_counter_select[4];
967 spin_unlock_irqrestore(&dev->pending_lock, flags);
968
969 return reply((struct ib_smp *) pmp);
970 }
971
972 static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
973 struct ib_device *ibdev, u8 port)
974 {
975 struct ib_pma_portsamplescontrol *p =
976 (struct ib_pma_portsamplescontrol *)pmp->data;
977 struct ipath_ibdev *dev = to_idev(ibdev);
978 unsigned long flags;
979 u32 start;
980 int ret;
981
982 if (pmp->attr_mod != 0 ||
983 (p->port_select != port && p->port_select != 0xFF)) {
984 pmp->status |= IB_SMP_INVALID_FIELD;
985 ret = reply((struct ib_smp *) pmp);
986 goto bail;
987 }
988
989 start = be32_to_cpu(p->sample_start);
990 if (start != 0) {
991 spin_lock_irqsave(&dev->pending_lock, flags);
992 if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) {
993 dev->pma_sample_status =
994 IB_PMA_SAMPLE_STATUS_STARTED;
995 dev->pma_sample_start = start;
996 dev->pma_sample_interval =
997 be32_to_cpu(p->sample_interval);
998 dev->pma_tag = be16_to_cpu(p->tag);
999 if (p->counter_select[0])
1000 dev->pma_counter_select[0] =
1001 p->counter_select[0];
1002 if (p->counter_select[1])
1003 dev->pma_counter_select[1] =
1004 p->counter_select[1];
1005 if (p->counter_select[2])
1006 dev->pma_counter_select[2] =
1007 p->counter_select[2];
1008 if (p->counter_select[3])
1009 dev->pma_counter_select[3] =
1010 p->counter_select[3];
1011 if (p->counter_select[4])
1012 dev->pma_counter_select[4] =
1013 p->counter_select[4];
1014 }
1015 spin_unlock_irqrestore(&dev->pending_lock, flags);
1016 }
1017 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
1018
1019 bail:
1020 return ret;
1021 }
1022
1023 static u64 get_counter(struct ipath_ibdev *dev, __be16 sel)
1024 {
1025 u64 ret;
1026
1027 switch (sel) {
1028 case IB_PMA_PORT_XMIT_DATA:
1029 ret = dev->ipath_sword;
1030 break;
1031 case IB_PMA_PORT_RCV_DATA:
1032 ret = dev->ipath_rword;
1033 break;
1034 case IB_PMA_PORT_XMIT_PKTS:
1035 ret = dev->ipath_spkts;
1036 break;
1037 case IB_PMA_PORT_RCV_PKTS:
1038 ret = dev->ipath_rpkts;
1039 break;
1040 case IB_PMA_PORT_XMIT_WAIT:
1041 ret = dev->ipath_xmit_wait;
1042 break;
1043 default:
1044 ret = 0;
1045 }
1046
1047 return ret;
1048 }
1049
1050 static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
1051 struct ib_device *ibdev)
1052 {
1053 struct ib_pma_portsamplesresult *p =
1054 (struct ib_pma_portsamplesresult *)pmp->data;
1055 struct ipath_ibdev *dev = to_idev(ibdev);
1056 int i;
1057
1058 memset(pmp->data, 0, sizeof(pmp->data));
1059 p->tag = cpu_to_be16(dev->pma_tag);
1060 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1061 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1062 p->counter[i] = cpu_to_be32(
1063 get_counter(dev, dev->pma_counter_select[i]));
1064
1065 return reply((struct ib_smp *) pmp);
1066 }
1067
1068 static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1069 struct ib_device *ibdev)
1070 {
1071 struct ib_pma_portsamplesresult_ext *p =
1072 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1073 struct ipath_ibdev *dev = to_idev(ibdev);
1074 int i;
1075
1076 memset(pmp->data, 0, sizeof(pmp->data));
1077 p->tag = cpu_to_be16(dev->pma_tag);
1078 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1079 /* 64 bits */
1080 p->extended_width = __constant_cpu_to_be32(0x80000000);
1081 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1082 p->counter[i] = cpu_to_be64(
1083 get_counter(dev, dev->pma_counter_select[i]));
1084
1085 return reply((struct ib_smp *) pmp);
1086 }
1087
1088 static int recv_pma_get_portcounters(struct ib_perf *pmp,
1089 struct ib_device *ibdev, u8 port)
1090 {
1091 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1092 pmp->data;
1093 struct ipath_ibdev *dev = to_idev(ibdev);
1094 struct ipath_verbs_counters cntrs;
1095 u8 port_select = p->port_select;
1096
1097 ipath_get_counters(dev->dd, &cntrs);
1098
1099 /* Adjust counters for any resets done. */
1100 cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
1101 cntrs.link_error_recovery_counter -=
1102 dev->z_link_error_recovery_counter;
1103 cntrs.link_downed_counter -= dev->z_link_downed_counter;
1104 cntrs.port_rcv_errors += dev->rcv_errors;
1105 cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
1106 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
1107 cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
1108 cntrs.port_xmit_data -= dev->z_port_xmit_data;
1109 cntrs.port_rcv_data -= dev->z_port_rcv_data;
1110 cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
1111 cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
1112 cntrs.local_link_integrity_errors -=
1113 dev->z_local_link_integrity_errors;
1114 cntrs.excessive_buffer_overrun_errors -=
1115 dev->z_excessive_buffer_overrun_errors;
1116
1117 memset(pmp->data, 0, sizeof(pmp->data));
1118
1119 p->port_select = port_select;
1120 if (pmp->attr_mod != 0 ||
1121 (port_select != port && port_select != 0xFF))
1122 pmp->status |= IB_SMP_INVALID_FIELD;
1123
1124 if (cntrs.symbol_error_counter > 0xFFFFUL)
1125 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
1126 else
1127 p->symbol_error_counter =
1128 cpu_to_be16((u16)cntrs.symbol_error_counter);
1129 if (cntrs.link_error_recovery_counter > 0xFFUL)
1130 p->link_error_recovery_counter = 0xFF;
1131 else
1132 p->link_error_recovery_counter =
1133 (u8)cntrs.link_error_recovery_counter;
1134 if (cntrs.link_downed_counter > 0xFFUL)
1135 p->link_downed_counter = 0xFF;
1136 else
1137 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1138 if (cntrs.port_rcv_errors > 0xFFFFUL)
1139 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
1140 else
1141 p->port_rcv_errors =
1142 cpu_to_be16((u16) cntrs.port_rcv_errors);
1143 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1144 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
1145 else
1146 p->port_rcv_remphys_errors =
1147 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1148 if (cntrs.port_xmit_discards > 0xFFFFUL)
1149 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
1150 else
1151 p->port_xmit_discards =
1152 cpu_to_be16((u16)cntrs.port_xmit_discards);
1153 if (cntrs.local_link_integrity_errors > 0xFUL)
1154 cntrs.local_link_integrity_errors = 0xFUL;
1155 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1156 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1157 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1158 cntrs.excessive_buffer_overrun_errors;
1159 if (dev->n_vl15_dropped > 0xFFFFUL)
1160 p->vl15_dropped = __constant_cpu_to_be16(0xFFFF);
1161 else
1162 p->vl15_dropped = cpu_to_be16((u16)dev->n_vl15_dropped);
1163 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1164 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
1165 else
1166 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1167 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1168 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
1169 else
1170 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1171 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1172 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1173 else
1174 p->port_xmit_packets =
1175 cpu_to_be32((u32)cntrs.port_xmit_packets);
1176 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1177 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1178 else
1179 p->port_rcv_packets =
1180 cpu_to_be32((u32) cntrs.port_rcv_packets);
1181
1182 return reply((struct ib_smp *) pmp);
1183 }
1184
1185 static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
1186 struct ib_device *ibdev, u8 port)
1187 {
1188 struct ib_pma_portcounters_ext *p =
1189 (struct ib_pma_portcounters_ext *)pmp->data;
1190 struct ipath_ibdev *dev = to_idev(ibdev);
1191 u64 swords, rwords, spkts, rpkts, xwait;
1192 u8 port_select = p->port_select;
1193
1194 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1195 &rpkts, &xwait);
1196
1197 /* Adjust counters for any resets done. */
1198 swords -= dev->z_port_xmit_data;
1199 rwords -= dev->z_port_rcv_data;
1200 spkts -= dev->z_port_xmit_packets;
1201 rpkts -= dev->z_port_rcv_packets;
1202
1203 memset(pmp->data, 0, sizeof(pmp->data));
1204
1205 p->port_select = port_select;
1206 if (pmp->attr_mod != 0 ||
1207 (port_select != port && port_select != 0xFF))
1208 pmp->status |= IB_SMP_INVALID_FIELD;
1209
1210 p->port_xmit_data = cpu_to_be64(swords);
1211 p->port_rcv_data = cpu_to_be64(rwords);
1212 p->port_xmit_packets = cpu_to_be64(spkts);
1213 p->port_rcv_packets = cpu_to_be64(rpkts);
1214 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
1215 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
1216 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
1217 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
1218
1219 return reply((struct ib_smp *) pmp);
1220 }
1221
1222 static int recv_pma_set_portcounters(struct ib_perf *pmp,
1223 struct ib_device *ibdev, u8 port)
1224 {
1225 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1226 pmp->data;
1227 struct ipath_ibdev *dev = to_idev(ibdev);
1228 struct ipath_verbs_counters cntrs;
1229
1230 /*
1231 * Since the HW doesn't support clearing counters, we save the
1232 * current count and subtract it from future responses.
1233 */
1234 ipath_get_counters(dev->dd, &cntrs);
1235
1236 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1237 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
1238
1239 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1240 dev->z_link_error_recovery_counter =
1241 cntrs.link_error_recovery_counter;
1242
1243 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1244 dev->z_link_downed_counter = cntrs.link_downed_counter;
1245
1246 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1247 dev->z_port_rcv_errors =
1248 cntrs.port_rcv_errors + dev->rcv_errors;
1249
1250 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1251 dev->z_port_rcv_remphys_errors =
1252 cntrs.port_rcv_remphys_errors;
1253
1254 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1255 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
1256
1257 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1258 dev->z_local_link_integrity_errors =
1259 cntrs.local_link_integrity_errors;
1260
1261 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1262 dev->z_excessive_buffer_overrun_errors =
1263 cntrs.excessive_buffer_overrun_errors;
1264
1265 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED)
1266 dev->n_vl15_dropped = 0;
1267
1268 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1269 dev->z_port_xmit_data = cntrs.port_xmit_data;
1270
1271 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1272 dev->z_port_rcv_data = cntrs.port_rcv_data;
1273
1274 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1275 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
1276
1277 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1278 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
1279
1280 return recv_pma_get_portcounters(pmp, ibdev, port);
1281 }
1282
1283 static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1284 struct ib_device *ibdev, u8 port)
1285 {
1286 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1287 pmp->data;
1288 struct ipath_ibdev *dev = to_idev(ibdev);
1289 u64 swords, rwords, spkts, rpkts, xwait;
1290
1291 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1292 &rpkts, &xwait);
1293
1294 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1295 dev->z_port_xmit_data = swords;
1296
1297 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1298 dev->z_port_rcv_data = rwords;
1299
1300 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1301 dev->z_port_xmit_packets = spkts;
1302
1303 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1304 dev->z_port_rcv_packets = rpkts;
1305
1306 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1307 dev->n_unicast_xmit = 0;
1308
1309 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1310 dev->n_unicast_rcv = 0;
1311
1312 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1313 dev->n_multicast_xmit = 0;
1314
1315 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1316 dev->n_multicast_rcv = 0;
1317
1318 return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1319 }
1320
1321 static int process_subn(struct ib_device *ibdev, int mad_flags,
1322 u8 port_num, struct ib_mad *in_mad,
1323 struct ib_mad *out_mad)
1324 {
1325 struct ib_smp *smp = (struct ib_smp *)out_mad;
1326 struct ipath_ibdev *dev = to_idev(ibdev);
1327 int ret;
1328
1329 *out_mad = *in_mad;
1330 if (smp->class_version != 1) {
1331 smp->status |= IB_SMP_UNSUP_VERSION;
1332 ret = reply(smp);
1333 goto bail;
1334 }
1335
1336 /* Is the mkey in the process of expiring? */
1337 if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1338 /* Clear timeout and mkey protection field. */
1339 dev->mkey_lease_timeout = 0;
1340 dev->mkeyprot = 0;
1341 }
1342
1343 /*
1344 * M_Key checking depends on
1345 * Portinfo:M_Key_protect_bits
1346 */
1347 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1348 dev->mkey != smp->mkey &&
1349 (smp->method == IB_MGMT_METHOD_SET ||
1350 (smp->method == IB_MGMT_METHOD_GET &&
1351 dev->mkeyprot >= 2))) {
1352 if (dev->mkey_violations != 0xFFFF)
1353 ++dev->mkey_violations;
1354 if (dev->mkey_lease_timeout ||
1355 dev->mkey_lease_period == 0) {
1356 ret = IB_MAD_RESULT_SUCCESS |
1357 IB_MAD_RESULT_CONSUMED;
1358 goto bail;
1359 }
1360 dev->mkey_lease_timeout = jiffies +
1361 dev->mkey_lease_period * HZ;
1362 /* Future: Generate a trap notice. */
1363 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1364 goto bail;
1365 } else if (dev->mkey_lease_timeout)
1366 dev->mkey_lease_timeout = 0;
1367
1368 switch (smp->method) {
1369 case IB_MGMT_METHOD_GET:
1370 switch (smp->attr_id) {
1371 case IB_SMP_ATTR_NODE_DESC:
1372 ret = recv_subn_get_nodedescription(smp, ibdev);
1373 goto bail;
1374 case IB_SMP_ATTR_NODE_INFO:
1375 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1376 goto bail;
1377 case IB_SMP_ATTR_GUID_INFO:
1378 ret = recv_subn_get_guidinfo(smp, ibdev);
1379 goto bail;
1380 case IB_SMP_ATTR_PORT_INFO:
1381 ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1382 goto bail;
1383 case IB_SMP_ATTR_PKEY_TABLE:
1384 ret = recv_subn_get_pkeytable(smp, ibdev);
1385 goto bail;
1386 case IB_SMP_ATTR_SM_INFO:
1387 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1388 ret = IB_MAD_RESULT_SUCCESS |
1389 IB_MAD_RESULT_CONSUMED;
1390 goto bail;
1391 }
1392 if (dev->port_cap_flags & IB_PORT_SM) {
1393 ret = IB_MAD_RESULT_SUCCESS;
1394 goto bail;
1395 }
1396 /* FALLTHROUGH */
1397 default:
1398 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1399 ret = reply(smp);
1400 goto bail;
1401 }
1402
1403 case IB_MGMT_METHOD_SET:
1404 switch (smp->attr_id) {
1405 case IB_SMP_ATTR_GUID_INFO:
1406 ret = recv_subn_set_guidinfo(smp, ibdev);
1407 goto bail;
1408 case IB_SMP_ATTR_PORT_INFO:
1409 ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1410 goto bail;
1411 case IB_SMP_ATTR_PKEY_TABLE:
1412 ret = recv_subn_set_pkeytable(smp, ibdev);
1413 goto bail;
1414 case IB_SMP_ATTR_SM_INFO:
1415 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1416 ret = IB_MAD_RESULT_SUCCESS |
1417 IB_MAD_RESULT_CONSUMED;
1418 goto bail;
1419 }
1420 if (dev->port_cap_flags & IB_PORT_SM) {
1421 ret = IB_MAD_RESULT_SUCCESS;
1422 goto bail;
1423 }
1424 /* FALLTHROUGH */
1425 default:
1426 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1427 ret = reply(smp);
1428 goto bail;
1429 }
1430
1431 case IB_MGMT_METHOD_GET_RESP:
1432 /*
1433 * The ib_mad module will call us to process responses
1434 * before checking for other consumers.
1435 * Just tell the caller to process it normally.
1436 */
1437 ret = IB_MAD_RESULT_FAILURE;
1438 goto bail;
1439 default:
1440 smp->status |= IB_SMP_UNSUP_METHOD;
1441 ret = reply(smp);
1442 }
1443
1444 bail:
1445 return ret;
1446 }
1447
1448 static int process_perf(struct ib_device *ibdev, u8 port_num,
1449 struct ib_mad *in_mad,
1450 struct ib_mad *out_mad)
1451 {
1452 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1453 int ret;
1454
1455 *out_mad = *in_mad;
1456 if (pmp->class_version != 1) {
1457 pmp->status |= IB_SMP_UNSUP_VERSION;
1458 ret = reply((struct ib_smp *) pmp);
1459 goto bail;
1460 }
1461
1462 switch (pmp->method) {
1463 case IB_MGMT_METHOD_GET:
1464 switch (pmp->attr_id) {
1465 case IB_PMA_CLASS_PORT_INFO:
1466 ret = recv_pma_get_classportinfo(pmp);
1467 goto bail;
1468 case IB_PMA_PORT_SAMPLES_CONTROL:
1469 ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1470 port_num);
1471 goto bail;
1472 case IB_PMA_PORT_SAMPLES_RESULT:
1473 ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1474 goto bail;
1475 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1476 ret = recv_pma_get_portsamplesresult_ext(pmp,
1477 ibdev);
1478 goto bail;
1479 case IB_PMA_PORT_COUNTERS:
1480 ret = recv_pma_get_portcounters(pmp, ibdev,
1481 port_num);
1482 goto bail;
1483 case IB_PMA_PORT_COUNTERS_EXT:
1484 ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1485 port_num);
1486 goto bail;
1487 default:
1488 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1489 ret = reply((struct ib_smp *) pmp);
1490 goto bail;
1491 }
1492
1493 case IB_MGMT_METHOD_SET:
1494 switch (pmp->attr_id) {
1495 case IB_PMA_PORT_SAMPLES_CONTROL:
1496 ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1497 port_num);
1498 goto bail;
1499 case IB_PMA_PORT_COUNTERS:
1500 ret = recv_pma_set_portcounters(pmp, ibdev,
1501 port_num);
1502 goto bail;
1503 case IB_PMA_PORT_COUNTERS_EXT:
1504 ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1505 port_num);
1506 goto bail;
1507 default:
1508 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1509 ret = reply((struct ib_smp *) pmp);
1510 goto bail;
1511 }
1512
1513 case IB_MGMT_METHOD_GET_RESP:
1514 /*
1515 * The ib_mad module will call us to process responses
1516 * before checking for other consumers.
1517 * Just tell the caller to process it normally.
1518 */
1519 ret = IB_MAD_RESULT_FAILURE;
1520 goto bail;
1521 default:
1522 pmp->status |= IB_SMP_UNSUP_METHOD;
1523 ret = reply((struct ib_smp *) pmp);
1524 }
1525
1526 bail:
1527 return ret;
1528 }
1529
1530 /**
1531 * ipath_process_mad - process an incoming MAD packet
1532 * @ibdev: the infiniband device this packet came in on
1533 * @mad_flags: MAD flags
1534 * @port_num: the port number this packet came in on
1535 * @in_wc: the work completion entry for this packet
1536 * @in_grh: the global route header for this packet
1537 * @in_mad: the incoming MAD
1538 * @out_mad: any outgoing MAD reply
1539 *
1540 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1541 * interested in processing.
1542 *
1543 * Note that the verbs framework has already done the MAD sanity checks,
1544 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1545 * MADs.
1546 *
1547 * This is called by the ib_mad module.
1548 */
1549 int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1550 struct ib_wc *in_wc, struct ib_grh *in_grh,
1551 struct ib_mad *in_mad, struct ib_mad *out_mad)
1552 {
1553 int ret;
1554
1555 switch (in_mad->mad_hdr.mgmt_class) {
1556 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1557 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1558 ret = process_subn(ibdev, mad_flags, port_num,
1559 in_mad, out_mad);
1560 goto bail;
1561 case IB_MGMT_CLASS_PERF_MGMT:
1562 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1563 goto bail;
1564 default:
1565 ret = IB_MAD_RESULT_SUCCESS;
1566 }
1567
1568 bail:
1569 return ret;
1570 }
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