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x86/amd-iommu: Add function to complete a tlb flush
[linux/fpc-iii.git] / drivers / infiniband / hw / ipath / ipath_mad.c
blobceb98ee7866646d87ecdc6b8351622a11441facd
1 /*
2 * Copyright (c) 2006, 2007, 2008 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 cpu_to_be16(0x0004)
41 #define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008)
42 #define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C)
43 #define IB_SMP_INVALID_FIELD cpu_to_be16(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 memcpy(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] = IPATH_SRC_OUI_1;
115 nip->vendor_id[1] = IPATH_SRC_OUI_2;
116 nip->vendor_id[2] = IPATH_SRC_OUI_3;
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 static void set_link_width_enabled(struct ipath_devdata *dd, u32 w)
150 {
151 (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, w);
152 }
153
154 static void set_link_speed_enabled(struct ipath_devdata *dd, u32 s)
155 {
156 (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, s);
157 }
158
159 static int get_overrunthreshold(struct ipath_devdata *dd)
160 {
161 return (dd->ipath_ibcctrl >>
162 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
163 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
164 }
165
166 /**
167 * set_overrunthreshold - set the overrun threshold
168 * @dd: the infinipath device
169 * @n: the new threshold
170 *
171 * Note that this will only take effect when the link state changes.
172 */
173 static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n)
174 {
175 unsigned v;
176
177 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
178 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
179 if (v != n) {
180 dd->ipath_ibcctrl &=
181 ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK <<
182 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT);
183 dd->ipath_ibcctrl |=
184 (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT;
185 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
186 dd->ipath_ibcctrl);
187 }
188 return 0;
189 }
190
191 static int get_phyerrthreshold(struct ipath_devdata *dd)
192 {
193 return (dd->ipath_ibcctrl >>
194 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
195 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
196 }
197
198 /**
199 * set_phyerrthreshold - set the physical error threshold
200 * @dd: the infinipath device
201 * @n: the new threshold
202 *
203 * Note that this will only take effect when the link state changes.
204 */
205 static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n)
206 {
207 unsigned v;
208
209 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
210 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
211 if (v != n) {
212 dd->ipath_ibcctrl &=
213 ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK <<
214 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT);
215 dd->ipath_ibcctrl |=
216 (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT;
217 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
218 dd->ipath_ibcctrl);
219 }
220 return 0;
221 }
222
223 /**
224 * get_linkdowndefaultstate - get the default linkdown state
225 * @dd: the infinipath device
226 *
227 * Returns zero if the default is POLL, 1 if the default is SLEEP.
228 */
229 static int get_linkdowndefaultstate(struct ipath_devdata *dd)
230 {
231 return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE);
232 }
233
234 static int recv_subn_get_portinfo(struct ib_smp *smp,
235 struct ib_device *ibdev, u8 port)
236 {
237 struct ipath_ibdev *dev;
238 struct ipath_devdata *dd;
239 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
240 u16 lid;
241 u8 ibcstat;
242 u8 mtu;
243 int ret;
244
245 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) {
246 smp->status |= IB_SMP_INVALID_FIELD;
247 ret = reply(smp);
248 goto bail;
249 }
250
251 dev = to_idev(ibdev);
252 dd = dev->dd;
253
254 /* Clear all fields. Only set the non-zero fields. */
255 memset(smp->data, 0, sizeof(smp->data));
256
257 /* Only return the mkey if the protection field allows it. */
258 if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey ||
259 dev->mkeyprot == 0)
260 pip->mkey = dev->mkey;
261 pip->gid_prefix = dev->gid_prefix;
262 lid = dd->ipath_lid;
263 pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
264 pip->sm_lid = cpu_to_be16(dev->sm_lid);
265 pip->cap_mask = cpu_to_be32(dev->port_cap_flags);
266 /* pip->diag_code; */
267 pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period);
268 pip->local_port_num = port;
269 pip->link_width_enabled = dd->ipath_link_width_enabled;
270 pip->link_width_supported = dd->ipath_link_width_supported;
271 pip->link_width_active = dd->ipath_link_width_active;
272 pip->linkspeed_portstate = dd->ipath_link_speed_supported << 4;
273 ibcstat = dd->ipath_lastibcstat;
274 /* map LinkState to IB portinfo values. */
275 pip->linkspeed_portstate |= ipath_ib_linkstate(dd, ibcstat) + 1;
276
277 pip->portphysstate_linkdown =
278 (ipath_cvt_physportstate[ibcstat & dd->ibcs_lts_mask] << 4) |
279 (get_linkdowndefaultstate(dd) ? 1 : 2);
280 pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dd->ipath_lmc;
281 pip->linkspeedactive_enabled = (dd->ipath_link_speed_active << 4) |
282 dd->ipath_link_speed_enabled;
283 switch (dd->ipath_ibmtu) {
284 case 4096:
285 mtu = IB_MTU_4096;
286 break;
287 case 2048:
288 mtu = IB_MTU_2048;
289 break;
290 case 1024:
291 mtu = IB_MTU_1024;
292 break;
293 case 512:
294 mtu = IB_MTU_512;
295 break;
296 case 256:
297 mtu = IB_MTU_256;
298 break;
299 default: /* oops, something is wrong */
300 mtu = IB_MTU_2048;
301 break;
302 }
303 pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl;
304 pip->vlcap_inittype = 0x10; /* VLCap = VL0, InitType = 0 */
305 pip->vl_high_limit = dev->vl_high_limit;
306 /* pip->vl_arb_high_cap; // only one VL */
307 /* pip->vl_arb_low_cap; // only one VL */
308 /* InitTypeReply = 0 */
309 /* our mtu cap depends on whether 4K MTU enabled or not */
310 pip->inittypereply_mtucap = ipath_mtu4096 ? IB_MTU_4096 : IB_MTU_2048;
311 /* HCAs ignore VLStallCount and HOQLife */
312 /* pip->vlstallcnt_hoqlife; */
313 pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */
314 pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
315 /* P_KeyViolations are counted by hardware. */
316 pip->pkey_violations =
317 cpu_to_be16((ipath_get_cr_errpkey(dd) -
318 dev->z_pkey_violations) & 0xFFFF);
319 pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
320 /* Only the hardware GUID is supported for now */
321 pip->guid_cap = 1;
322 pip->clientrereg_resv_subnetto = dev->subnet_timeout;
323 /* 32.768 usec. response time (guessing) */
324 pip->resv_resptimevalue = 3;
325 pip->localphyerrors_overrunerrors =
326 (get_phyerrthreshold(dd) << 4) |
327 get_overrunthreshold(dd);
328 /* pip->max_credit_hint; */
329 if (dev->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) {
330 u32 v;
331
332 v = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LINKLATENCY);
333 pip->link_roundtrip_latency[0] = v >> 16;
334 pip->link_roundtrip_latency[1] = v >> 8;
335 pip->link_roundtrip_latency[2] = v;
336 }
337
338 ret = reply(smp);
339
340 bail:
341 return ret;
342 }
343
344 /**
345 * get_pkeys - return the PKEY table for port 0
346 * @dd: the infinipath device
347 * @pkeys: the pkey table is placed here
348 */
349 static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
350 {
351 /* always a kernel port, no locking needed */
352 struct ipath_portdata *pd = dd->ipath_pd[0];
353
354 memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
355
356 return 0;
357 }
358
359 static int recv_subn_get_pkeytable(struct ib_smp *smp,
360 struct ib_device *ibdev)
361 {
362 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
363 u16 *p = (u16 *) smp->data;
364 __be16 *q = (__be16 *) smp->data;
365
366 /* 64 blocks of 32 16-bit P_Key entries */
367
368 memset(smp->data, 0, sizeof(smp->data));
369 if (startpx == 0) {
370 struct ipath_ibdev *dev = to_idev(ibdev);
371 unsigned i, n = ipath_get_npkeys(dev->dd);
372
373 get_pkeys(dev->dd, p);
374
375 for (i = 0; i < n; i++)
376 q[i] = cpu_to_be16(p[i]);
377 } else
378 smp->status |= IB_SMP_INVALID_FIELD;
379
380 return reply(smp);
381 }
382
383 static int recv_subn_set_guidinfo(struct ib_smp *smp,
384 struct ib_device *ibdev)
385 {
386 /* The only GUID we support is the first read-only entry. */
387 return recv_subn_get_guidinfo(smp, ibdev);
388 }
389
390 /**
391 * set_linkdowndefaultstate - set the default linkdown state
392 * @dd: the infinipath device
393 * @sleep: the new state
394 *
395 * Note that this will only take effect when the link state changes.
396 */
397 static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep)
398 {
399 if (sleep)
400 dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
401 else
402 dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
403 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
404 dd->ipath_ibcctrl);
405 return 0;
406 }
407
408 /**
409 * recv_subn_set_portinfo - set port information
410 * @smp: the incoming SM packet
411 * @ibdev: the infiniband device
412 * @port: the port on the device
413 *
414 * Set Portinfo (see ch. 14.2.5.6).
415 */
416 static int recv_subn_set_portinfo(struct ib_smp *smp,
417 struct ib_device *ibdev, u8 port)
418 {
419 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
420 struct ib_event event;
421 struct ipath_ibdev *dev;
422 struct ipath_devdata *dd;
423 char clientrereg = 0;
424 u16 lid, smlid;
425 u8 lwe;
426 u8 lse;
427 u8 state;
428 u16 lstate;
429 u32 mtu;
430 int ret, ore;
431
432 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
433 goto err;
434
435 dev = to_idev(ibdev);
436 dd = dev->dd;
437 event.device = ibdev;
438 event.element.port_num = port;
439
440 dev->mkey = pip->mkey;
441 dev->gid_prefix = pip->gid_prefix;
442 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
443
444 lid = be16_to_cpu(pip->lid);
445 if (dd->ipath_lid != lid ||
446 dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) {
447 /* Must be a valid unicast LID address. */
448 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
449 goto err;
450 ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7);
451 event.event = IB_EVENT_LID_CHANGE;
452 ib_dispatch_event(&event);
453 }
454
455 smlid = be16_to_cpu(pip->sm_lid);
456 if (smlid != dev->sm_lid) {
457 /* Must be a valid unicast LID address. */
458 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE)
459 goto err;
460 dev->sm_lid = smlid;
461 event.event = IB_EVENT_SM_CHANGE;
462 ib_dispatch_event(&event);
463 }
464
465 /* Allow 1x or 4x to be set (see 14.2.6.6). */
466 lwe = pip->link_width_enabled;
467 if (lwe) {
468 if (lwe == 0xFF)
469 lwe = dd->ipath_link_width_supported;
470 else if (lwe >= 16 || (lwe & ~dd->ipath_link_width_supported))
471 goto err;
472 set_link_width_enabled(dd, lwe);
473 }
474
475 /* Allow 2.5 or 5.0 Gbs. */
476 lse = pip->linkspeedactive_enabled & 0xF;
477 if (lse) {
478 if (lse == 15)
479 lse = dd->ipath_link_speed_supported;
480 else if (lse >= 8 || (lse & ~dd->ipath_link_speed_supported))
481 goto err;
482 set_link_speed_enabled(dd, lse);
483 }
484
485 /* Set link down default state. */
486 switch (pip->portphysstate_linkdown & 0xF) {
487 case 0: /* NOP */
488 break;
489 case 1: /* SLEEP */
490 if (set_linkdowndefaultstate(dd, 1))
491 goto err;
492 break;
493 case 2: /* POLL */
494 if (set_linkdowndefaultstate(dd, 0))
495 goto err;
496 break;
497 default:
498 goto err;
499 }
500
501 dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
502 dev->vl_high_limit = pip->vl_high_limit;
503
504 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
505 case IB_MTU_256:
506 mtu = 256;
507 break;
508 case IB_MTU_512:
509 mtu = 512;
510 break;
511 case IB_MTU_1024:
512 mtu = 1024;
513 break;
514 case IB_MTU_2048:
515 mtu = 2048;
516 break;
517 case IB_MTU_4096:
518 if (!ipath_mtu4096)
519 goto err;
520 mtu = 4096;
521 break;
522 default:
523 /* XXX We have already partially updated our state! */
524 goto err;
525 }
526 ipath_set_mtu(dd, mtu);
527
528 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
529
530 /* We only support VL0 */
531 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
532 goto err;
533
534 if (pip->mkey_violations == 0)
535 dev->mkey_violations = 0;
536
537 /*
538 * Hardware counter can't be reset so snapshot and subtract
539 * later.
540 */
541 if (pip->pkey_violations == 0)
542 dev->z_pkey_violations = ipath_get_cr_errpkey(dd);
543
544 if (pip->qkey_violations == 0)
545 dev->qkey_violations = 0;
546
547 ore = pip->localphyerrors_overrunerrors;
548 if (set_phyerrthreshold(dd, (ore >> 4) & 0xF))
549 goto err;
550
551 if (set_overrunthreshold(dd, (ore & 0xF)))
552 goto err;
553
554 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
555
556 if (pip->clientrereg_resv_subnetto & 0x80) {
557 clientrereg = 1;
558 event.event = IB_EVENT_CLIENT_REREGISTER;
559 ib_dispatch_event(&event);
560 }
561
562 /*
563 * Do the port state change now that the other link parameters
564 * have been set.
565 * Changing the port physical state only makes sense if the link
566 * is down or is being set to down.
567 */
568 state = pip->linkspeed_portstate & 0xF;
569 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
570 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
571 goto err;
572
573 /*
574 * Only state changes of DOWN, ARM, and ACTIVE are valid
575 * and must be in the correct state to take effect (see 7.2.6).
576 */
577 switch (state) {
578 case IB_PORT_NOP:
579 if (lstate == 0)
580 break;
581 /* FALLTHROUGH */
582 case IB_PORT_DOWN:
583 if (lstate == 0)
584 lstate = IPATH_IB_LINKDOWN_ONLY;
585 else if (lstate == 1)
586 lstate = IPATH_IB_LINKDOWN_SLEEP;
587 else if (lstate == 2)
588 lstate = IPATH_IB_LINKDOWN;
589 else if (lstate == 3)
590 lstate = IPATH_IB_LINKDOWN_DISABLE;
591 else
592 goto err;
593 ipath_set_linkstate(dd, lstate);
594 if (lstate == IPATH_IB_LINKDOWN_DISABLE) {
595 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
596 goto done;
597 }
598 ipath_wait_linkstate(dd, IPATH_LINKINIT | IPATH_LINKARMED |
599 IPATH_LINKACTIVE, 1000);
600 break;
601 case IB_PORT_ARMED:
602 ipath_set_linkstate(dd, IPATH_IB_LINKARM);
603 break;
604 case IB_PORT_ACTIVE:
605 ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE);
606 break;
607 default:
608 /* XXX We have already partially updated our state! */
609 goto err;
610 }
611
612 ret = recv_subn_get_portinfo(smp, ibdev, port);
613
614 if (clientrereg)
615 pip->clientrereg_resv_subnetto |= 0x80;
616
617 goto done;
618
619 err:
620 smp->status |= IB_SMP_INVALID_FIELD;
621 ret = recv_subn_get_portinfo(smp, ibdev, port);
622
623 done:
624 return ret;
625 }
626
627 /**
628 * rm_pkey - decrecment the reference count for the given PKEY
629 * @dd: the infinipath device
630 * @key: the PKEY index
631 *
632 * Return true if this was the last reference and the hardware table entry
633 * needs to be changed.
634 */
635 static int rm_pkey(struct ipath_devdata *dd, u16 key)
636 {
637 int i;
638 int ret;
639
640 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
641 if (dd->ipath_pkeys[i] != key)
642 continue;
643 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
644 dd->ipath_pkeys[i] = 0;
645 ret = 1;
646 goto bail;
647 }
648 break;
649 }
650
651 ret = 0;
652
653 bail:
654 return ret;
655 }
656
657 /**
658 * add_pkey - add the given PKEY to the hardware table
659 * @dd: the infinipath device
660 * @key: the PKEY
661 *
662 * Return an error code if unable to add the entry, zero if no change,
663 * or 1 if the hardware PKEY register needs to be updated.
664 */
665 static int add_pkey(struct ipath_devdata *dd, u16 key)
666 {
667 int i;
668 u16 lkey = key & 0x7FFF;
669 int any = 0;
670 int ret;
671
672 if (lkey == 0x7FFF) {
673 ret = 0;
674 goto bail;
675 }
676
677 /* Look for an empty slot or a matching PKEY. */
678 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
679 if (!dd->ipath_pkeys[i]) {
680 any++;
681 continue;
682 }
683 /* If it matches exactly, try to increment the ref count */
684 if (dd->ipath_pkeys[i] == key) {
685 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
686 ret = 0;
687 goto bail;
688 }
689 /* Lost the race. Look for an empty slot below. */
690 atomic_dec(&dd->ipath_pkeyrefs[i]);
691 any++;
692 }
693 /*
694 * It makes no sense to have both the limited and unlimited
695 * PKEY set at the same time since the unlimited one will
696 * disable the limited one.
697 */
698 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
699 ret = -EEXIST;
700 goto bail;
701 }
702 }
703 if (!any) {
704 ret = -EBUSY;
705 goto bail;
706 }
707 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
708 if (!dd->ipath_pkeys[i] &&
709 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
710 /* for ipathstats, etc. */
711 ipath_stats.sps_pkeys[i] = lkey;
712 dd->ipath_pkeys[i] = key;
713 ret = 1;
714 goto bail;
715 }
716 }
717 ret = -EBUSY;
718
719 bail:
720 return ret;
721 }
722
723 /**
724 * set_pkeys - set the PKEY table for port 0
725 * @dd: the infinipath device
726 * @pkeys: the PKEY table
727 */
728 static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
729 {
730 struct ipath_portdata *pd;
731 int i;
732 int changed = 0;
733
734 /* always a kernel port, no locking needed */
735 pd = dd->ipath_pd[0];
736
737 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
738 u16 key = pkeys[i];
739 u16 okey = pd->port_pkeys[i];
740
741 if (key == okey)
742 continue;
743 /*
744 * The value of this PKEY table entry is changing.
745 * Remove the old entry in the hardware's array of PKEYs.
746 */
747 if (okey & 0x7FFF)
748 changed |= rm_pkey(dd, okey);
749 if (key & 0x7FFF) {
750 int ret = add_pkey(dd, key);
751
752 if (ret < 0)
753 key = 0;
754 else
755 changed |= ret;
756 }
757 pd->port_pkeys[i] = key;
758 }
759 if (changed) {
760 u64 pkey;
761
762 pkey = (u64) dd->ipath_pkeys[0] |
763 ((u64) dd->ipath_pkeys[1] << 16) |
764 ((u64) dd->ipath_pkeys[2] << 32) |
765 ((u64) dd->ipath_pkeys[3] << 48);
766 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
767 (unsigned long long) pkey);
768 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
769 pkey);
770 }
771 return 0;
772 }
773
774 static int recv_subn_set_pkeytable(struct ib_smp *smp,
775 struct ib_device *ibdev)
776 {
777 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
778 __be16 *p = (__be16 *) smp->data;
779 u16 *q = (u16 *) smp->data;
780 struct ipath_ibdev *dev = to_idev(ibdev);
781 unsigned i, n = ipath_get_npkeys(dev->dd);
782
783 for (i = 0; i < n; i++)
784 q[i] = be16_to_cpu(p[i]);
785
786 if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
787 smp->status |= IB_SMP_INVALID_FIELD;
788
789 return recv_subn_get_pkeytable(smp, ibdev);
790 }
791
792 #define IB_PMA_CLASS_PORT_INFO cpu_to_be16(0x0001)
793 #define IB_PMA_PORT_SAMPLES_CONTROL cpu_to_be16(0x0010)
794 #define IB_PMA_PORT_SAMPLES_RESULT cpu_to_be16(0x0011)
795 #define IB_PMA_PORT_COUNTERS cpu_to_be16(0x0012)
796 #define IB_PMA_PORT_COUNTERS_EXT cpu_to_be16(0x001D)
797 #define IB_PMA_PORT_SAMPLES_RESULT_EXT cpu_to_be16(0x001E)
798
799 struct ib_perf {
800 u8 base_version;
801 u8 mgmt_class;
802 u8 class_version;
803 u8 method;
804 __be16 status;
805 __be16 unused;
806 __be64 tid;
807 __be16 attr_id;
808 __be16 resv;
809 __be32 attr_mod;
810 u8 reserved[40];
811 u8 data[192];
812 } __attribute__ ((packed));
813
814 struct ib_pma_classportinfo {
815 u8 base_version;
816 u8 class_version;
817 __be16 cap_mask;
818 u8 reserved[3];
819 u8 resp_time_value; /* only lower 5 bits */
820 union ib_gid redirect_gid;
821 __be32 redirect_tc_sl_fl; /* 8, 4, 20 bits respectively */
822 __be16 redirect_lid;
823 __be16 redirect_pkey;
824 __be32 redirect_qp; /* only lower 24 bits */
825 __be32 redirect_qkey;
826 union ib_gid trap_gid;
827 __be32 trap_tc_sl_fl; /* 8, 4, 20 bits respectively */
828 __be16 trap_lid;
829 __be16 trap_pkey;
830 __be32 trap_hl_qp; /* 8, 24 bits respectively */
831 __be32 trap_qkey;
832 } __attribute__ ((packed));
833
834 struct ib_pma_portsamplescontrol {
835 u8 opcode;
836 u8 port_select;
837 u8 tick;
838 u8 counter_width; /* only lower 3 bits */
839 __be32 counter_mask0_9; /* 2, 10 * 3, bits */
840 __be16 counter_mask10_14; /* 1, 5 * 3, bits */
841 u8 sample_mechanisms;
842 u8 sample_status; /* only lower 2 bits */
843 __be64 option_mask;
844 __be64 vendor_mask;
845 __be32 sample_start;
846 __be32 sample_interval;
847 __be16 tag;
848 __be16 counter_select[15];
849 } __attribute__ ((packed));
850
851 struct ib_pma_portsamplesresult {
852 __be16 tag;
853 __be16 sample_status; /* only lower 2 bits */
854 __be32 counter[15];
855 } __attribute__ ((packed));
856
857 struct ib_pma_portsamplesresult_ext {
858 __be16 tag;
859 __be16 sample_status; /* only lower 2 bits */
860 __be32 extended_width; /* only upper 2 bits */
861 __be64 counter[15];
862 } __attribute__ ((packed));
863
864 struct ib_pma_portcounters {
865 u8 reserved;
866 u8 port_select;
867 __be16 counter_select;
868 __be16 symbol_error_counter;
869 u8 link_error_recovery_counter;
870 u8 link_downed_counter;
871 __be16 port_rcv_errors;
872 __be16 port_rcv_remphys_errors;
873 __be16 port_rcv_switch_relay_errors;
874 __be16 port_xmit_discards;
875 u8 port_xmit_constraint_errors;
876 u8 port_rcv_constraint_errors;
877 u8 reserved1;
878 u8 lli_ebor_errors; /* 4, 4, bits */
879 __be16 reserved2;
880 __be16 vl15_dropped;
881 __be32 port_xmit_data;
882 __be32 port_rcv_data;
883 __be32 port_xmit_packets;
884 __be32 port_rcv_packets;
885 } __attribute__ ((packed));
886
887 #define IB_PMA_SEL_SYMBOL_ERROR cpu_to_be16(0x0001)
888 #define IB_PMA_SEL_LINK_ERROR_RECOVERY cpu_to_be16(0x0002)
889 #define IB_PMA_SEL_LINK_DOWNED cpu_to_be16(0x0004)
890 #define IB_PMA_SEL_PORT_RCV_ERRORS cpu_to_be16(0x0008)
891 #define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS cpu_to_be16(0x0010)
892 #define IB_PMA_SEL_PORT_XMIT_DISCARDS cpu_to_be16(0x0040)
893 #define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS cpu_to_be16(0x0200)
894 #define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS cpu_to_be16(0x0400)
895 #define IB_PMA_SEL_PORT_VL15_DROPPED cpu_to_be16(0x0800)
896 #define IB_PMA_SEL_PORT_XMIT_DATA cpu_to_be16(0x1000)
897 #define IB_PMA_SEL_PORT_RCV_DATA cpu_to_be16(0x2000)
898 #define IB_PMA_SEL_PORT_XMIT_PACKETS cpu_to_be16(0x4000)
899 #define IB_PMA_SEL_PORT_RCV_PACKETS cpu_to_be16(0x8000)
900
901 struct ib_pma_portcounters_ext {
902 u8 reserved;
903 u8 port_select;
904 __be16 counter_select;
905 __be32 reserved1;
906 __be64 port_xmit_data;
907 __be64 port_rcv_data;
908 __be64 port_xmit_packets;
909 __be64 port_rcv_packets;
910 __be64 port_unicast_xmit_packets;
911 __be64 port_unicast_rcv_packets;
912 __be64 port_multicast_xmit_packets;
913 __be64 port_multicast_rcv_packets;
914 } __attribute__ ((packed));
915
916 #define IB_PMA_SELX_PORT_XMIT_DATA cpu_to_be16(0x0001)
917 #define IB_PMA_SELX_PORT_RCV_DATA cpu_to_be16(0x0002)
918 #define IB_PMA_SELX_PORT_XMIT_PACKETS cpu_to_be16(0x0004)
919 #define IB_PMA_SELX_PORT_RCV_PACKETS cpu_to_be16(0x0008)
920 #define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS cpu_to_be16(0x0010)
921 #define IB_PMA_SELX_PORT_UNI_RCV_PACKETS cpu_to_be16(0x0020)
922 #define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS cpu_to_be16(0x0040)
923 #define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS cpu_to_be16(0x0080)
924
925 static int recv_pma_get_classportinfo(struct ib_perf *pmp)
926 {
927 struct ib_pma_classportinfo *p =
928 (struct ib_pma_classportinfo *)pmp->data;
929
930 memset(pmp->data, 0, sizeof(pmp->data));
931
932 if (pmp->attr_mod != 0)
933 pmp->status |= IB_SMP_INVALID_FIELD;
934
935 /* Indicate AllPortSelect is valid (only one port anyway) */
936 p->cap_mask = cpu_to_be16(1 << 8);
937 p->base_version = 1;
938 p->class_version = 1;
939 /*
940 * Expected response time is 4.096 usec. * 2^18 == 1.073741824
941 * sec.
942 */
943 p->resp_time_value = 18;
944
945 return reply((struct ib_smp *) pmp);
946 }
947
948 /*
949 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
950 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
951 * We support 5 counters which only count the mandatory quantities.
952 */
953 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
954 #define COUNTER_MASK0_9 cpu_to_be32(COUNTER_MASK(1, 0) | \
955 COUNTER_MASK(1, 1) | \
956 COUNTER_MASK(1, 2) | \
957 COUNTER_MASK(1, 3) | \
958 COUNTER_MASK(1, 4))
959
960 static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
961 struct ib_device *ibdev, u8 port)
962 {
963 struct ib_pma_portsamplescontrol *p =
964 (struct ib_pma_portsamplescontrol *)pmp->data;
965 struct ipath_ibdev *dev = to_idev(ibdev);
966 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
967 unsigned long flags;
968 u8 port_select = p->port_select;
969
970 memset(pmp->data, 0, sizeof(pmp->data));
971
972 p->port_select = port_select;
973 if (pmp->attr_mod != 0 ||
974 (port_select != port && port_select != 0xFF))
975 pmp->status |= IB_SMP_INVALID_FIELD;
976 /*
977 * Ticks are 10x the link transfer period which for 2.5Gbs is 4
978 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample
979 * intervals are counted in ticks. Since we use Linux timers, that
980 * count in jiffies, we can't sample for less than 1000 ticks if HZ
981 * == 1000 (4000 ticks if HZ is 250). link_speed_active returns 2 for
982 * DDR, 1 for SDR, set the tick to 1 for DDR, 0 for SDR on chips that
983 * have hardware support for delaying packets.
984 */
985 if (crp->cr_psstat)
986 p->tick = dev->dd->ipath_link_speed_active - 1;
987 else
988 p->tick = 250; /* 1 usec. */
989 p->counter_width = 4; /* 32 bit counters */
990 p->counter_mask0_9 = COUNTER_MASK0_9;
991 spin_lock_irqsave(&dev->pending_lock, flags);
992 if (crp->cr_psstat)
993 p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat);
994 else
995 p->sample_status = dev->pma_sample_status;
996 p->sample_start = cpu_to_be32(dev->pma_sample_start);
997 p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
998 p->tag = cpu_to_be16(dev->pma_tag);
999 p->counter_select[0] = dev->pma_counter_select[0];
1000 p->counter_select[1] = dev->pma_counter_select[1];
1001 p->counter_select[2] = dev->pma_counter_select[2];
1002 p->counter_select[3] = dev->pma_counter_select[3];
1003 p->counter_select[4] = dev->pma_counter_select[4];
1004 spin_unlock_irqrestore(&dev->pending_lock, flags);
1005
1006 return reply((struct ib_smp *) pmp);
1007 }
1008
1009 static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
1010 struct ib_device *ibdev, u8 port)
1011 {
1012 struct ib_pma_portsamplescontrol *p =
1013 (struct ib_pma_portsamplescontrol *)pmp->data;
1014 struct ipath_ibdev *dev = to_idev(ibdev);
1015 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
1016 unsigned long flags;
1017 u8 status;
1018 int ret;
1019
1020 if (pmp->attr_mod != 0 ||
1021 (p->port_select != port && p->port_select != 0xFF)) {
1022 pmp->status |= IB_SMP_INVALID_FIELD;
1023 ret = reply((struct ib_smp *) pmp);
1024 goto bail;
1025 }
1026
1027 spin_lock_irqsave(&dev->pending_lock, flags);
1028 if (crp->cr_psstat)
1029 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
1030 else
1031 status = dev->pma_sample_status;
1032 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
1033 dev->pma_sample_start = be32_to_cpu(p->sample_start);
1034 dev->pma_sample_interval = be32_to_cpu(p->sample_interval);
1035 dev->pma_tag = be16_to_cpu(p->tag);
1036 dev->pma_counter_select[0] = p->counter_select[0];
1037 dev->pma_counter_select[1] = p->counter_select[1];
1038 dev->pma_counter_select[2] = p->counter_select[2];
1039 dev->pma_counter_select[3] = p->counter_select[3];
1040 dev->pma_counter_select[4] = p->counter_select[4];
1041 if (crp->cr_psstat) {
1042 ipath_write_creg(dev->dd, crp->cr_psinterval,
1043 dev->pma_sample_interval);
1044 ipath_write_creg(dev->dd, crp->cr_psstart,
1045 dev->pma_sample_start);
1046 } else
1047 dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED;
1048 }
1049 spin_unlock_irqrestore(&dev->pending_lock, flags);
1050
1051 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
1052
1053 bail:
1054 return ret;
1055 }
1056
1057 static u64 get_counter(struct ipath_ibdev *dev,
1058 struct ipath_cregs const *crp,
1059 __be16 sel)
1060 {
1061 u64 ret;
1062
1063 switch (sel) {
1064 case IB_PMA_PORT_XMIT_DATA:
1065 ret = (crp->cr_psxmitdatacount) ?
1066 ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) :
1067 dev->ipath_sword;
1068 break;
1069 case IB_PMA_PORT_RCV_DATA:
1070 ret = (crp->cr_psrcvdatacount) ?
1071 ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) :
1072 dev->ipath_rword;
1073 break;
1074 case IB_PMA_PORT_XMIT_PKTS:
1075 ret = (crp->cr_psxmitpktscount) ?
1076 ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) :
1077 dev->ipath_spkts;
1078 break;
1079 case IB_PMA_PORT_RCV_PKTS:
1080 ret = (crp->cr_psrcvpktscount) ?
1081 ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) :
1082 dev->ipath_rpkts;
1083 break;
1084 case IB_PMA_PORT_XMIT_WAIT:
1085 ret = (crp->cr_psxmitwaitcount) ?
1086 ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) :
1087 dev->ipath_xmit_wait;
1088 break;
1089 default:
1090 ret = 0;
1091 }
1092
1093 return ret;
1094 }
1095
1096 static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
1097 struct ib_device *ibdev)
1098 {
1099 struct ib_pma_portsamplesresult *p =
1100 (struct ib_pma_portsamplesresult *)pmp->data;
1101 struct ipath_ibdev *dev = to_idev(ibdev);
1102 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
1103 u8 status;
1104 int i;
1105
1106 memset(pmp->data, 0, sizeof(pmp->data));
1107 p->tag = cpu_to_be16(dev->pma_tag);
1108 if (crp->cr_psstat)
1109 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
1110 else
1111 status = dev->pma_sample_status;
1112 p->sample_status = cpu_to_be16(status);
1113 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1114 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 :
1115 cpu_to_be32(
1116 get_counter(dev, crp, dev->pma_counter_select[i]));
1117
1118 return reply((struct ib_smp *) pmp);
1119 }
1120
1121 static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1122 struct ib_device *ibdev)
1123 {
1124 struct ib_pma_portsamplesresult_ext *p =
1125 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1126 struct ipath_ibdev *dev = to_idev(ibdev);
1127 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
1128 u8 status;
1129 int i;
1130
1131 memset(pmp->data, 0, sizeof(pmp->data));
1132 p->tag = cpu_to_be16(dev->pma_tag);
1133 if (crp->cr_psstat)
1134 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
1135 else
1136 status = dev->pma_sample_status;
1137 p->sample_status = cpu_to_be16(status);
1138 /* 64 bits */
1139 p->extended_width = cpu_to_be32(0x80000000);
1140 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1141 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 :
1142 cpu_to_be64(
1143 get_counter(dev, crp, dev->pma_counter_select[i]));
1144
1145 return reply((struct ib_smp *) pmp);
1146 }
1147
1148 static int recv_pma_get_portcounters(struct ib_perf *pmp,
1149 struct ib_device *ibdev, u8 port)
1150 {
1151 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1152 pmp->data;
1153 struct ipath_ibdev *dev = to_idev(ibdev);
1154 struct ipath_verbs_counters cntrs;
1155 u8 port_select = p->port_select;
1156
1157 ipath_get_counters(dev->dd, &cntrs);
1158
1159 /* Adjust counters for any resets done. */
1160 cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
1161 cntrs.link_error_recovery_counter -=
1162 dev->z_link_error_recovery_counter;
1163 cntrs.link_downed_counter -= dev->z_link_downed_counter;
1164 cntrs.port_rcv_errors += dev->rcv_errors;
1165 cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
1166 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
1167 cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
1168 cntrs.port_xmit_data -= dev->z_port_xmit_data;
1169 cntrs.port_rcv_data -= dev->z_port_rcv_data;
1170 cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
1171 cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
1172 cntrs.local_link_integrity_errors -=
1173 dev->z_local_link_integrity_errors;
1174 cntrs.excessive_buffer_overrun_errors -=
1175 dev->z_excessive_buffer_overrun_errors;
1176 cntrs.vl15_dropped -= dev->z_vl15_dropped;
1177 cntrs.vl15_dropped += dev->n_vl15_dropped;
1178
1179 memset(pmp->data, 0, sizeof(pmp->data));
1180
1181 p->port_select = port_select;
1182 if (pmp->attr_mod != 0 ||
1183 (port_select != port && port_select != 0xFF))
1184 pmp->status |= IB_SMP_INVALID_FIELD;
1185
1186 if (cntrs.symbol_error_counter > 0xFFFFUL)
1187 p->symbol_error_counter = cpu_to_be16(0xFFFF);
1188 else
1189 p->symbol_error_counter =
1190 cpu_to_be16((u16)cntrs.symbol_error_counter);
1191 if (cntrs.link_error_recovery_counter > 0xFFUL)
1192 p->link_error_recovery_counter = 0xFF;
1193 else
1194 p->link_error_recovery_counter =
1195 (u8)cntrs.link_error_recovery_counter;
1196 if (cntrs.link_downed_counter > 0xFFUL)
1197 p->link_downed_counter = 0xFF;
1198 else
1199 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1200 if (cntrs.port_rcv_errors > 0xFFFFUL)
1201 p->port_rcv_errors = cpu_to_be16(0xFFFF);
1202 else
1203 p->port_rcv_errors =
1204 cpu_to_be16((u16) cntrs.port_rcv_errors);
1205 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1206 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
1207 else
1208 p->port_rcv_remphys_errors =
1209 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1210 if (cntrs.port_xmit_discards > 0xFFFFUL)
1211 p->port_xmit_discards = cpu_to_be16(0xFFFF);
1212 else
1213 p->port_xmit_discards =
1214 cpu_to_be16((u16)cntrs.port_xmit_discards);
1215 if (cntrs.local_link_integrity_errors > 0xFUL)
1216 cntrs.local_link_integrity_errors = 0xFUL;
1217 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1218 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1219 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1220 cntrs.excessive_buffer_overrun_errors;
1221 if (cntrs.vl15_dropped > 0xFFFFUL)
1222 p->vl15_dropped = cpu_to_be16(0xFFFF);
1223 else
1224 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
1225 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1226 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF);
1227 else
1228 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1229 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1230 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF);
1231 else
1232 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1233 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1234 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF);
1235 else
1236 p->port_xmit_packets =
1237 cpu_to_be32((u32)cntrs.port_xmit_packets);
1238 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1239 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF);
1240 else
1241 p->port_rcv_packets =
1242 cpu_to_be32((u32) cntrs.port_rcv_packets);
1243
1244 return reply((struct ib_smp *) pmp);
1245 }
1246
1247 static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
1248 struct ib_device *ibdev, u8 port)
1249 {
1250 struct ib_pma_portcounters_ext *p =
1251 (struct ib_pma_portcounters_ext *)pmp->data;
1252 struct ipath_ibdev *dev = to_idev(ibdev);
1253 u64 swords, rwords, spkts, rpkts, xwait;
1254 u8 port_select = p->port_select;
1255
1256 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1257 &rpkts, &xwait);
1258
1259 /* Adjust counters for any resets done. */
1260 swords -= dev->z_port_xmit_data;
1261 rwords -= dev->z_port_rcv_data;
1262 spkts -= dev->z_port_xmit_packets;
1263 rpkts -= dev->z_port_rcv_packets;
1264
1265 memset(pmp->data, 0, sizeof(pmp->data));
1266
1267 p->port_select = port_select;
1268 if (pmp->attr_mod != 0 ||
1269 (port_select != port && port_select != 0xFF))
1270 pmp->status |= IB_SMP_INVALID_FIELD;
1271
1272 p->port_xmit_data = cpu_to_be64(swords);
1273 p->port_rcv_data = cpu_to_be64(rwords);
1274 p->port_xmit_packets = cpu_to_be64(spkts);
1275 p->port_rcv_packets = cpu_to_be64(rpkts);
1276 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
1277 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
1278 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
1279 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
1280
1281 return reply((struct ib_smp *) pmp);
1282 }
1283
1284 static int recv_pma_set_portcounters(struct ib_perf *pmp,
1285 struct ib_device *ibdev, u8 port)
1286 {
1287 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1288 pmp->data;
1289 struct ipath_ibdev *dev = to_idev(ibdev);
1290 struct ipath_verbs_counters cntrs;
1291
1292 /*
1293 * Since the HW doesn't support clearing counters, we save the
1294 * current count and subtract it from future responses.
1295 */
1296 ipath_get_counters(dev->dd, &cntrs);
1297
1298 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1299 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
1300
1301 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1302 dev->z_link_error_recovery_counter =
1303 cntrs.link_error_recovery_counter;
1304
1305 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1306 dev->z_link_downed_counter = cntrs.link_downed_counter;
1307
1308 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1309 dev->z_port_rcv_errors =
1310 cntrs.port_rcv_errors + dev->rcv_errors;
1311
1312 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1313 dev->z_port_rcv_remphys_errors =
1314 cntrs.port_rcv_remphys_errors;
1315
1316 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1317 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
1318
1319 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1320 dev->z_local_link_integrity_errors =
1321 cntrs.local_link_integrity_errors;
1322
1323 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1324 dev->z_excessive_buffer_overrun_errors =
1325 cntrs.excessive_buffer_overrun_errors;
1326
1327 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
1328 dev->n_vl15_dropped = 0;
1329 dev->z_vl15_dropped = cntrs.vl15_dropped;
1330 }
1331
1332 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1333 dev->z_port_xmit_data = cntrs.port_xmit_data;
1334
1335 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1336 dev->z_port_rcv_data = cntrs.port_rcv_data;
1337
1338 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1339 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
1340
1341 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1342 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
1343
1344 return recv_pma_get_portcounters(pmp, ibdev, port);
1345 }
1346
1347 static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1348 struct ib_device *ibdev, u8 port)
1349 {
1350 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1351 pmp->data;
1352 struct ipath_ibdev *dev = to_idev(ibdev);
1353 u64 swords, rwords, spkts, rpkts, xwait;
1354
1355 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1356 &rpkts, &xwait);
1357
1358 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1359 dev->z_port_xmit_data = swords;
1360
1361 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1362 dev->z_port_rcv_data = rwords;
1363
1364 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1365 dev->z_port_xmit_packets = spkts;
1366
1367 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1368 dev->z_port_rcv_packets = rpkts;
1369
1370 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1371 dev->n_unicast_xmit = 0;
1372
1373 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1374 dev->n_unicast_rcv = 0;
1375
1376 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1377 dev->n_multicast_xmit = 0;
1378
1379 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1380 dev->n_multicast_rcv = 0;
1381
1382 return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1383 }
1384
1385 static int process_subn(struct ib_device *ibdev, int mad_flags,
1386 u8 port_num, struct ib_mad *in_mad,
1387 struct ib_mad *out_mad)
1388 {
1389 struct ib_smp *smp = (struct ib_smp *)out_mad;
1390 struct ipath_ibdev *dev = to_idev(ibdev);
1391 int ret;
1392
1393 *out_mad = *in_mad;
1394 if (smp->class_version != 1) {
1395 smp->status |= IB_SMP_UNSUP_VERSION;
1396 ret = reply(smp);
1397 goto bail;
1398 }
1399
1400 /* Is the mkey in the process of expiring? */
1401 if (dev->mkey_lease_timeout &&
1402 time_after_eq(jiffies, dev->mkey_lease_timeout)) {
1403 /* Clear timeout and mkey protection field. */
1404 dev->mkey_lease_timeout = 0;
1405 dev->mkeyprot = 0;
1406 }
1407
1408 /*
1409 * M_Key checking depends on
1410 * Portinfo:M_Key_protect_bits
1411 */
1412 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1413 dev->mkey != smp->mkey &&
1414 (smp->method == IB_MGMT_METHOD_SET ||
1415 (smp->method == IB_MGMT_METHOD_GET &&
1416 dev->mkeyprot >= 2))) {
1417 if (dev->mkey_violations != 0xFFFF)
1418 ++dev->mkey_violations;
1419 if (dev->mkey_lease_timeout ||
1420 dev->mkey_lease_period == 0) {
1421 ret = IB_MAD_RESULT_SUCCESS |
1422 IB_MAD_RESULT_CONSUMED;
1423 goto bail;
1424 }
1425 dev->mkey_lease_timeout = jiffies +
1426 dev->mkey_lease_period * HZ;
1427 /* Future: Generate a trap notice. */
1428 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1429 goto bail;
1430 } else if (dev->mkey_lease_timeout)
1431 dev->mkey_lease_timeout = 0;
1432
1433 switch (smp->method) {
1434 case IB_MGMT_METHOD_GET:
1435 switch (smp->attr_id) {
1436 case IB_SMP_ATTR_NODE_DESC:
1437 ret = recv_subn_get_nodedescription(smp, ibdev);
1438 goto bail;
1439 case IB_SMP_ATTR_NODE_INFO:
1440 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1441 goto bail;
1442 case IB_SMP_ATTR_GUID_INFO:
1443 ret = recv_subn_get_guidinfo(smp, ibdev);
1444 goto bail;
1445 case IB_SMP_ATTR_PORT_INFO:
1446 ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1447 goto bail;
1448 case IB_SMP_ATTR_PKEY_TABLE:
1449 ret = recv_subn_get_pkeytable(smp, ibdev);
1450 goto bail;
1451 case IB_SMP_ATTR_SM_INFO:
1452 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1453 ret = IB_MAD_RESULT_SUCCESS |
1454 IB_MAD_RESULT_CONSUMED;
1455 goto bail;
1456 }
1457 if (dev->port_cap_flags & IB_PORT_SM) {
1458 ret = IB_MAD_RESULT_SUCCESS;
1459 goto bail;
1460 }
1461 /* FALLTHROUGH */
1462 default:
1463 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1464 ret = reply(smp);
1465 goto bail;
1466 }
1467
1468 case IB_MGMT_METHOD_SET:
1469 switch (smp->attr_id) {
1470 case IB_SMP_ATTR_GUID_INFO:
1471 ret = recv_subn_set_guidinfo(smp, ibdev);
1472 goto bail;
1473 case IB_SMP_ATTR_PORT_INFO:
1474 ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1475 goto bail;
1476 case IB_SMP_ATTR_PKEY_TABLE:
1477 ret = recv_subn_set_pkeytable(smp, ibdev);
1478 goto bail;
1479 case IB_SMP_ATTR_SM_INFO:
1480 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1481 ret = IB_MAD_RESULT_SUCCESS |
1482 IB_MAD_RESULT_CONSUMED;
1483 goto bail;
1484 }
1485 if (dev->port_cap_flags & IB_PORT_SM) {
1486 ret = IB_MAD_RESULT_SUCCESS;
1487 goto bail;
1488 }
1489 /* FALLTHROUGH */
1490 default:
1491 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1492 ret = reply(smp);
1493 goto bail;
1494 }
1495
1496 case IB_MGMT_METHOD_TRAP:
1497 case IB_MGMT_METHOD_REPORT:
1498 case IB_MGMT_METHOD_REPORT_RESP:
1499 case IB_MGMT_METHOD_TRAP_REPRESS:
1500 case IB_MGMT_METHOD_GET_RESP:
1501 /*
1502 * The ib_mad module will call us to process responses
1503 * before checking for other consumers.
1504 * Just tell the caller to process it normally.
1505 */
1506 ret = IB_MAD_RESULT_SUCCESS;
1507 goto bail;
1508 default:
1509 smp->status |= IB_SMP_UNSUP_METHOD;
1510 ret = reply(smp);
1511 }
1512
1513 bail:
1514 return ret;
1515 }
1516
1517 static int process_perf(struct ib_device *ibdev, u8 port_num,
1518 struct ib_mad *in_mad,
1519 struct ib_mad *out_mad)
1520 {
1521 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1522 int ret;
1523
1524 *out_mad = *in_mad;
1525 if (pmp->class_version != 1) {
1526 pmp->status |= IB_SMP_UNSUP_VERSION;
1527 ret = reply((struct ib_smp *) pmp);
1528 goto bail;
1529 }
1530
1531 switch (pmp->method) {
1532 case IB_MGMT_METHOD_GET:
1533 switch (pmp->attr_id) {
1534 case IB_PMA_CLASS_PORT_INFO:
1535 ret = recv_pma_get_classportinfo(pmp);
1536 goto bail;
1537 case IB_PMA_PORT_SAMPLES_CONTROL:
1538 ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1539 port_num);
1540 goto bail;
1541 case IB_PMA_PORT_SAMPLES_RESULT:
1542 ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1543 goto bail;
1544 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1545 ret = recv_pma_get_portsamplesresult_ext(pmp,
1546 ibdev);
1547 goto bail;
1548 case IB_PMA_PORT_COUNTERS:
1549 ret = recv_pma_get_portcounters(pmp, ibdev,
1550 port_num);
1551 goto bail;
1552 case IB_PMA_PORT_COUNTERS_EXT:
1553 ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1554 port_num);
1555 goto bail;
1556 default:
1557 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1558 ret = reply((struct ib_smp *) pmp);
1559 goto bail;
1560 }
1561
1562 case IB_MGMT_METHOD_SET:
1563 switch (pmp->attr_id) {
1564 case IB_PMA_PORT_SAMPLES_CONTROL:
1565 ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1566 port_num);
1567 goto bail;
1568 case IB_PMA_PORT_COUNTERS:
1569 ret = recv_pma_set_portcounters(pmp, ibdev,
1570 port_num);
1571 goto bail;
1572 case IB_PMA_PORT_COUNTERS_EXT:
1573 ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1574 port_num);
1575 goto bail;
1576 default:
1577 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1578 ret = reply((struct ib_smp *) pmp);
1579 goto bail;
1580 }
1581
1582 case IB_MGMT_METHOD_GET_RESP:
1583 /*
1584 * The ib_mad module will call us to process responses
1585 * before checking for other consumers.
1586 * Just tell the caller to process it normally.
1587 */
1588 ret = IB_MAD_RESULT_SUCCESS;
1589 goto bail;
1590 default:
1591 pmp->status |= IB_SMP_UNSUP_METHOD;
1592 ret = reply((struct ib_smp *) pmp);
1593 }
1594
1595 bail:
1596 return ret;
1597 }
1598
1599 /**
1600 * ipath_process_mad - process an incoming MAD packet
1601 * @ibdev: the infiniband device this packet came in on
1602 * @mad_flags: MAD flags
1603 * @port_num: the port number this packet came in on
1604 * @in_wc: the work completion entry for this packet
1605 * @in_grh: the global route header for this packet
1606 * @in_mad: the incoming MAD
1607 * @out_mad: any outgoing MAD reply
1608 *
1609 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1610 * interested in processing.
1611 *
1612 * Note that the verbs framework has already done the MAD sanity checks,
1613 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1614 * MADs.
1615 *
1616 * This is called by the ib_mad module.
1617 */
1618 int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1619 struct ib_wc *in_wc, struct ib_grh *in_grh,
1620 struct ib_mad *in_mad, struct ib_mad *out_mad)
1621 {
1622 int ret;
1623
1624 switch (in_mad->mad_hdr.mgmt_class) {
1625 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1626 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1627 ret = process_subn(ibdev, mad_flags, port_num,
1628 in_mad, out_mad);
1629 goto bail;
1630 case IB_MGMT_CLASS_PERF_MGMT:
1631 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1632 goto bail;
1633 default:
1634 ret = IB_MAD_RESULT_SUCCESS;
1635 }
1636
1637 bail:
1638 return ret;
1639 }
Linux with added FPC-III support