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IB/ipath: Update copyright dates
[deliverable/linux.git] / drivers / infiniband / hw / ipath / ipath_mad.c
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e28c00ad 1/*
87427da5 2 * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
e28c00ad
BS		 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"
27b678dd 38#include "ipath_common.h"
e28c00ad
BS		 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
45static 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
57static 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
68struct 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
83static 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;
e8a88f09 88 u32 vendor, majrev, minrev;
e28c00ad 89
11b054fe
BS		 90 /* GUID 0 is illegal */
91 if (smp->attr_mod || (dd->ipath_guid == 0))
e28c00ad
BS		 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;
34b2aafe 105 nip->node_guid = dd->ipath_guid;
e28c00ad 106 nip->port_guid = nip->sys_guid;
34b2aafe
BS		 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;
e28c00ad
BS		 111 nip->revision = cpu_to_be32((majrev << 16) | minrev);
112 nip->local_port_num = port;
34b2aafe 113 vendor = dd->ipath_vendorid;
e28c00ad
BS		 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
121static 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 */
11b054fe
BS		 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
e28c00ad
BS		 144 smp->status |= IB_SMP_INVALID_FIELD;
145
146 return reply(smp);
147}
148
34b2aafe
BS		 149
150static 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 */
164static 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
182static 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 */
196static 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 */
220static int get_linkdowndefaultstate(struct ipath_devdata *dd)
221{
222 return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE);
223}
224
e28c00ad
BS		 225static int recv_subn_get_portinfo(struct ib_smp *smp,
226 struct ib_device *ibdev, u8 port)
227{
228 struct ipath_ibdev *dev;
da2ab62a 229 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
e28c00ad
BS		 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_resv_lmc >> 6) == 0)
249 pip->mkey = dev->mkey;
250 pip->gid_prefix = dev->gid_prefix;
34b2aafe 251 lid = dev->dd->ipath_lid;
e28c00ad
BS		 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 */
34b2aafe 262 ibcstat = dev->dd->ipath_lastibcstat;
e28c00ad
BS		 263 pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1;
264 pip->portphysstate_linkdown =
265 (ipath_cvt_physportstate[ibcstat & 0xf] << 4) |
34b2aafe 266 (get_linkdowndefaultstate(dev->dd) ? 1 : 2);
e28c00ad
BS		 267 pip->mkeyprot_resv_lmc = dev->mkeyprot_resv_lmc;
268 pip->linkspeedactive_enabled = 0x11; /* 2.5Gbps, 2.5Gbps */
34b2aafe 269 switch (dev->dd->ipath_ibmtu) {
e28c00ad
BS		 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 */
e7340f04
RW		 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;
e28c00ad
BS		 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 =
34b2aafe 307 cpu_to_be16((ipath_get_cr_errpkey(dev->dd) -
443a64ab 308 dev->z_pkey_violations) & 0xFFFF);
e28c00ad
BS		 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 =
34b2aafe
BS		 316 (get_phyerrthreshold(dev->dd) << 4) |
317 get_overrunthreshold(dev->dd);
e28c00ad
BS		 318 /* pip->max_credit_hint; */
319 /* pip->link_roundtrip_latency[3]; */
320
321 ret = reply(smp);
322
323bail:
324 return ret;
325}
326
34b2aafe
BS		 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 */
332static 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
e28c00ad
BS		 341static 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);
34b2aafe 353 unsigned i, n = ipath_get_npkeys(dev->dd);
e28c00ad 354
34b2aafe 355 get_pkeys(dev->dd, p);
e28c00ad
BS		 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
365static 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
34b2aafe
BS		 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 */
379static 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
e28c00ad
BS		 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 */
398static int recv_subn_set_portinfo(struct ib_smp *smp,
399 struct ib_device *ibdev, u8 port)
400{
da2ab62a 401 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
e28c00ad
BS		 402 struct ib_event event;
403 struct ipath_ibdev *dev;
404 u32 flags;
405 char clientrereg = 0;
406 u16 lid, smlid;
407 u8 lwe;
408 u8 lse;
409 u8 state;
410 u16 lstate;
411 u32 mtu;
34b2aafe 412 int ret, ore;
e28c00ad
BS		 413
414 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
415 goto err;
416
417 dev = to_idev(ibdev);
418 event.device = ibdev;
419 event.element.port_num = port;
420
421 dev->mkey = pip->mkey;
422 dev->gid_prefix = pip->gid_prefix;
423 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
424
425 lid = be16_to_cpu(pip->lid);
34b2aafe 426 if (lid != dev->dd->ipath_lid) {
e28c00ad 427 /* Must be a valid unicast LID address. */
27b678dd 428 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
e28c00ad 429 goto err;
1eb68b99 430 ipath_set_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7);
e28c00ad
BS		 431 event.event = IB_EVENT_LID_CHANGE;
432 ib_dispatch_event(&event);
433 }
434
435 smlid = be16_to_cpu(pip->sm_lid);
436 if (smlid != dev->sm_lid) {
437 /* Must be a valid unicast LID address. */
27b678dd 438 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE)
e28c00ad
BS		 439 goto err;
440 dev->sm_lid = smlid;
441 event.event = IB_EVENT_SM_CHANGE;
442 ib_dispatch_event(&event);
443 }
444
445 /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
446 lwe = pip->link_width_enabled;
447 if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
448 goto err;
449 if (lwe == 0xFF)
450 dev->link_width_enabled = 3; /* 1x or 4x */
451 else if (lwe)
452 dev->link_width_enabled = lwe;
453
454 /* Only 2.5 Gbs supported. */
455 lse = pip->linkspeedactive_enabled & 0xF;
456 if (lse >= 2 && lse <= 0xE)
457 goto err;
458
459 /* Set link down default state. */
460 switch (pip->portphysstate_linkdown & 0xF) {
461 case 0: /* NOP */
462 break;
463 case 1: /* SLEEP */
34b2aafe 464 if (set_linkdowndefaultstate(dev->dd, 1))
e28c00ad
BS		 465 goto err;
466 break;
467 case 2: /* POLL */
34b2aafe 468 if (set_linkdowndefaultstate(dev->dd, 0))
e28c00ad
BS		 469 goto err;
470 break;
471 default:
472 goto err;
473 }
474
475 dev->mkeyprot_resv_lmc = pip->mkeyprot_resv_lmc;
476 dev->vl_high_limit = pip->vl_high_limit;
477
478 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
479 case IB_MTU_256:
480 mtu = 256;
481 break;
482 case IB_MTU_512:
483 mtu = 512;
484 break;
485 case IB_MTU_1024:
486 mtu = 1024;
487 break;
488 case IB_MTU_2048:
489 mtu = 2048;
490 break;
491 case IB_MTU_4096:
492 mtu = 4096;
493 break;
494 default:
495 /* XXX We have already partially updated our state! */
496 goto err;
497 }
34b2aafe 498 ipath_set_mtu(dev->dd, mtu);
e28c00ad
BS		 499
500 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
501
502 /* We only support VL0 */
503 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
504 goto err;
505
506 if (pip->mkey_violations == 0)
507 dev->mkey_violations = 0;
508
509 /*
510 * Hardware counter can't be reset so snapshot and subtract
511 * later.
512 */
513 if (pip->pkey_violations == 0)
34b2aafe 514 dev->z_pkey_violations = ipath_get_cr_errpkey(dev->dd);
e28c00ad
BS		 515
516 if (pip->qkey_violations == 0)
517 dev->qkey_violations = 0;
518
34b2aafe
BS		 519 ore = pip->localphyerrors_overrunerrors;
520 if (set_phyerrthreshold(dev->dd, (ore >> 4) & 0xF))
e28c00ad
BS		 521 goto err;
522
34b2aafe 523 if (set_overrunthreshold(dev->dd, (ore & 0xF)))
e28c00ad
BS		 524 goto err;
525
526 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
527
528 if (pip->clientrereg_resv_subnetto & 0x80) {
529 clientrereg = 1;
6eddb5cb 530 event.event = IB_EVENT_CLIENT_REREGISTER;
e28c00ad
BS		 531 ib_dispatch_event(&event);
532 }
533
534 /*
535 * Do the port state change now that the other link parameters
536 * have been set.
537 * Changing the port physical state only makes sense if the link
538 * is down or is being set to down.
539 */
540 state = pip->linkspeed_portstate & 0xF;
34b2aafe 541 flags = dev->dd->ipath_flags;
e28c00ad
BS		 542 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
543 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
544 goto err;
545
546 /*
547 * Only state changes of DOWN, ARM, and ACTIVE are valid
548 * and must be in the correct state to take effect (see 7.2.6).
549 */
550 switch (state) {
551 case IB_PORT_NOP:
552 if (lstate == 0)
553 break;
554 /* FALLTHROUGH */
555 case IB_PORT_DOWN:
556 if (lstate == 0)
34b2aafe 557 if (get_linkdowndefaultstate(dev->dd))
e28c00ad
BS		 558 lstate = IPATH_IB_LINKDOWN_SLEEP;
559 else
560 lstate = IPATH_IB_LINKDOWN;
561 else if (lstate == 1)
562 lstate = IPATH_IB_LINKDOWN_SLEEP;
563 else if (lstate == 2)
564 lstate = IPATH_IB_LINKDOWN;
565 else if (lstate == 3)
566 lstate = IPATH_IB_LINKDOWN_DISABLE;
567 else
568 goto err;
34b2aafe 569 ipath_set_linkstate(dev->dd, lstate);
e28c00ad
BS		 570 if (flags & IPATH_LINKACTIVE) {
571 event.event = IB_EVENT_PORT_ERR;
572 ib_dispatch_event(&event);
573 }
574 break;
575 case IB_PORT_ARMED:
576 if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE)))
577 break;
34b2aafe 578 ipath_set_linkstate(dev->dd, IPATH_IB_LINKARM);
e28c00ad
BS		 579 if (flags & IPATH_LINKACTIVE) {
580 event.event = IB_EVENT_PORT_ERR;
581 ib_dispatch_event(&event);
582 }
583 break;
584 case IB_PORT_ACTIVE:
585 if (!(flags & IPATH_LINKARMED))
586 break;
34b2aafe 587 ipath_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
e28c00ad
BS		 588 event.event = IB_EVENT_PORT_ACTIVE;
589 ib_dispatch_event(&event);
590 break;
591 default:
592 /* XXX We have already partially updated our state! */
593 goto err;
594 }
595
596 ret = recv_subn_get_portinfo(smp, ibdev, port);
597
598 if (clientrereg)
599 pip->clientrereg_resv_subnetto |= 0x80;
600
601 goto done;
602
603err:
604 smp->status |= IB_SMP_INVALID_FIELD;
605 ret = recv_subn_get_portinfo(smp, ibdev, port);
606
607done:
608 return ret;
609}
610
34b2aafe
BS		 611/**
612 * rm_pkey - decrecment the reference count for the given PKEY
613 * @dd: the infinipath device
614 * @key: the PKEY index
615 *
616 * Return true if this was the last reference and the hardware table entry
617 * needs to be changed.
618 */
619static int rm_pkey(struct ipath_devdata *dd, u16 key)
620{
621 int i;
622 int ret;
623
624 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
625 if (dd->ipath_pkeys[i] != key)
626 continue;
627 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
628 dd->ipath_pkeys[i] = 0;
629 ret = 1;
630 goto bail;
631 }
632 break;
633 }
634
635 ret = 0;
636
637bail:
638 return ret;
639}
640
641/**
642 * add_pkey - add the given PKEY to the hardware table
643 * @dd: the infinipath device
644 * @key: the PKEY
645 *
646 * Return an error code if unable to add the entry, zero if no change,
647 * or 1 if the hardware PKEY register needs to be updated.
648 */
649static int add_pkey(struct ipath_devdata *dd, u16 key)
650{
651 int i;
652 u16 lkey = key & 0x7FFF;
653 int any = 0;
654 int ret;
655
656 if (lkey == 0x7FFF) {
657 ret = 0;
658 goto bail;
659 }
660
661 /* Look for an empty slot or a matching PKEY. */
662 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
663 if (!dd->ipath_pkeys[i]) {
664 any++;
665 continue;
666 }
667 /* If it matches exactly, try to increment the ref count */
668 if (dd->ipath_pkeys[i] == key) {
669 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
670 ret = 0;
671 goto bail;
672 }
673 /* Lost the race. Look for an empty slot below. */
674 atomic_dec(&dd->ipath_pkeyrefs[i]);
675 any++;
676 }
677 /*
678 * It makes no sense to have both the limited and unlimited
679 * PKEY set at the same time since the unlimited one will
680 * disable the limited one.
681 */
682 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
683 ret = -EEXIST;
684 goto bail;
685 }
686 }
687 if (!any) {
688 ret = -EBUSY;
689 goto bail;
690 }
691 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
692 if (!dd->ipath_pkeys[i] &&
693 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
694 /* for ipathstats, etc. */
695 ipath_stats.sps_pkeys[i] = lkey;
696 dd->ipath_pkeys[i] = key;
697 ret = 1;
698 goto bail;
699 }
700 }
701 ret = -EBUSY;
702
703bail:
704 return ret;
705}
706
707/**
708 * set_pkeys - set the PKEY table for port 0
709 * @dd: the infinipath device
710 * @pkeys: the PKEY table
711 */
712static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
713{
714 struct ipath_portdata *pd;
715 int i;
716 int changed = 0;
717
718 pd = dd->ipath_pd[0];
719
720 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
721 u16 key = pkeys[i];
722 u16 okey = pd->port_pkeys[i];
723
724 if (key == okey)
725 continue;
726 /*
727 * The value of this PKEY table entry is changing.
728 * Remove the old entry in the hardware's array of PKEYs.
729 */
730 if (okey & 0x7FFF)
731 changed |= rm_pkey(dd, okey);
732 if (key & 0x7FFF) {
733 int ret = add_pkey(dd, key);
734
735 if (ret < 0)
736 key = 0;
737 else
738 changed |= ret;
739 }
740 pd->port_pkeys[i] = key;
741 }
742 if (changed) {
743 u64 pkey;
744
745 pkey = (u64) dd->ipath_pkeys[0] |
746 ((u64) dd->ipath_pkeys[1] << 16) |
747 ((u64) dd->ipath_pkeys[2] << 32) |
748 ((u64) dd->ipath_pkeys[3] << 48);
749 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
750 (unsigned long long) pkey);
751 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
752 pkey);
753 }
754 return 0;
755}
756
e28c00ad
BS		 757static int recv_subn_set_pkeytable(struct ib_smp *smp,
758 struct ib_device *ibdev)
759{
760 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
761 __be16 *p = (__be16 *) smp->data;
762 u16 *q = (u16 *) smp->data;
763 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 764 unsigned i, n = ipath_get_npkeys(dev->dd);
e28c00ad
BS		 765
766 for (i = 0; i < n; i++)
767 q[i] = be16_to_cpu(p[i]);
768
34b2aafe 769 if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
e28c00ad
BS		 770 smp->status |= IB_SMP_INVALID_FIELD;
771
772 return recv_subn_get_pkeytable(smp, ibdev);
773}
774
775#define IB_PMA_CLASS_PORT_INFO __constant_htons(0x0001)
776#define IB_PMA_PORT_SAMPLES_CONTROL __constant_htons(0x0010)
777#define IB_PMA_PORT_SAMPLES_RESULT __constant_htons(0x0011)
778#define IB_PMA_PORT_COUNTERS __constant_htons(0x0012)
779#define IB_PMA_PORT_COUNTERS_EXT __constant_htons(0x001D)
780#define IB_PMA_PORT_SAMPLES_RESULT_EXT __constant_htons(0x001E)
781
782struct ib_perf {
783 u8 base_version;
784 u8 mgmt_class;
785 u8 class_version;
786 u8 method;
787 __be16 status;
788 __be16 unused;
789 __be64 tid;
790 __be16 attr_id;
791 __be16 resv;
792 __be32 attr_mod;
793 u8 reserved[40];
794 u8 data[192];
795} __attribute__ ((packed));
796
797struct ib_pma_classportinfo {
798 u8 base_version;
799 u8 class_version;
800 __be16 cap_mask;
801 u8 reserved[3];
802 u8 resp_time_value; /* only lower 5 bits */
803 union ib_gid redirect_gid;
804 __be32 redirect_tc_sl_fl; /* 8, 4, 20 bits respectively */
805 __be16 redirect_lid;
806 __be16 redirect_pkey;
807 __be32 redirect_qp; /* only lower 24 bits */
808 __be32 redirect_qkey;
809 union ib_gid trap_gid;
810 __be32 trap_tc_sl_fl; /* 8, 4, 20 bits respectively */
811 __be16 trap_lid;
812 __be16 trap_pkey;
813 __be32 trap_hl_qp; /* 8, 24 bits respectively */
814 __be32 trap_qkey;
815} __attribute__ ((packed));
816
817struct ib_pma_portsamplescontrol {
818 u8 opcode;
819 u8 port_select;
820 u8 tick;
821 u8 counter_width; /* only lower 3 bits */
822 __be32 counter_mask0_9; /* 2, 10 * 3, bits */
823 __be16 counter_mask10_14; /* 1, 5 * 3, bits */
824 u8 sample_mechanisms;
825 u8 sample_status; /* only lower 2 bits */
826 __be64 option_mask;
827 __be64 vendor_mask;
828 __be32 sample_start;
829 __be32 sample_interval;
830 __be16 tag;
831 __be16 counter_select[15];
832} __attribute__ ((packed));
833
834struct ib_pma_portsamplesresult {
835 __be16 tag;
836 __be16 sample_status; /* only lower 2 bits */
837 __be32 counter[15];
838} __attribute__ ((packed));
839
840struct ib_pma_portsamplesresult_ext {
841 __be16 tag;
842 __be16 sample_status; /* only lower 2 bits */
843 __be32 extended_width; /* only upper 2 bits */
844 __be64 counter[15];
845} __attribute__ ((packed));
846
847struct ib_pma_portcounters {
848 u8 reserved;
849 u8 port_select;
850 __be16 counter_select;
851 __be16 symbol_error_counter;
852 u8 link_error_recovery_counter;
853 u8 link_downed_counter;
854 __be16 port_rcv_errors;
855 __be16 port_rcv_remphys_errors;
856 __be16 port_rcv_switch_relay_errors;
857 __be16 port_xmit_discards;
858 u8 port_xmit_constraint_errors;
859 u8 port_rcv_constraint_errors;
860 u8 reserved1;
861 u8 lli_ebor_errors; /* 4, 4, bits */
862 __be16 reserved2;
863 __be16 vl15_dropped;
864 __be32 port_xmit_data;
865 __be32 port_rcv_data;
866 __be32 port_xmit_packets;
867 __be32 port_rcv_packets;
868} __attribute__ ((packed));
869
870#define IB_PMA_SEL_SYMBOL_ERROR __constant_htons(0x0001)
871#define IB_PMA_SEL_LINK_ERROR_RECOVERY __constant_htons(0x0002)
872#define IB_PMA_SEL_LINK_DOWNED __constant_htons(0x0004)
873#define IB_PMA_SEL_PORT_RCV_ERRORS __constant_htons(0x0008)
874#define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS __constant_htons(0x0010)
875#define IB_PMA_SEL_PORT_XMIT_DISCARDS __constant_htons(0x0040)
fba75200
BS		 876#define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS __constant_htons(0x0200)
877#define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS __constant_htons(0x0400)
878#define IB_PMA_SEL_PORT_VL15_DROPPED __constant_htons(0x0800)
e28c00ad
BS		 879#define IB_PMA_SEL_PORT_XMIT_DATA __constant_htons(0x1000)
880#define IB_PMA_SEL_PORT_RCV_DATA __constant_htons(0x2000)
881#define IB_PMA_SEL_PORT_XMIT_PACKETS __constant_htons(0x4000)
882#define IB_PMA_SEL_PORT_RCV_PACKETS __constant_htons(0x8000)
883
884struct ib_pma_portcounters_ext {
885 u8 reserved;
886 u8 port_select;
887 __be16 counter_select;
888 __be32 reserved1;
889 __be64 port_xmit_data;
890 __be64 port_rcv_data;
891 __be64 port_xmit_packets;
892 __be64 port_rcv_packets;
893 __be64 port_unicast_xmit_packets;
894 __be64 port_unicast_rcv_packets;
895 __be64 port_multicast_xmit_packets;
896 __be64 port_multicast_rcv_packets;
897} __attribute__ ((packed));
898
899#define IB_PMA_SELX_PORT_XMIT_DATA __constant_htons(0x0001)
900#define IB_PMA_SELX_PORT_RCV_DATA __constant_htons(0x0002)
901#define IB_PMA_SELX_PORT_XMIT_PACKETS __constant_htons(0x0004)
902#define IB_PMA_SELX_PORT_RCV_PACKETS __constant_htons(0x0008)
903#define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS __constant_htons(0x0010)
904#define IB_PMA_SELX_PORT_UNI_RCV_PACKETS __constant_htons(0x0020)
905#define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS __constant_htons(0x0040)
906#define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS __constant_htons(0x0080)
907
908static int recv_pma_get_classportinfo(struct ib_perf *pmp)
909{
910 struct ib_pma_classportinfo *p =
911 (struct ib_pma_classportinfo *)pmp->data;
912
913 memset(pmp->data, 0, sizeof(pmp->data));
914
915 if (pmp->attr_mod != 0)
916 pmp->status |= IB_SMP_INVALID_FIELD;
917
918 /* Indicate AllPortSelect is valid (only one port anyway) */
919 p->cap_mask = __constant_cpu_to_be16(1 << 8);
920 p->base_version = 1;
921 p->class_version = 1;
922 /*
923 * Expected response time is 4.096 usec. * 2^18 == 1.073741824
924 * sec.
925 */
926 p->resp_time_value = 18;
927
928 return reply((struct ib_smp *) pmp);
929}
930
931/*
932 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
933 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
934 * We support 5 counters which only count the mandatory quantities.
935 */
936#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
937#define COUNTER_MASK0_9 \
938 __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
939 COUNTER_MASK(1, 1) | \
940 COUNTER_MASK(1, 2) | \
941 COUNTER_MASK(1, 3) | \
942 COUNTER_MASK(1, 4))
943
944static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
945 struct ib_device *ibdev, u8 port)
946{
947 struct ib_pma_portsamplescontrol *p =
948 (struct ib_pma_portsamplescontrol *)pmp->data;
949 struct ipath_ibdev *dev = to_idev(ibdev);
950 unsigned long flags;
951 u8 port_select = p->port_select;
952
953 memset(pmp->data, 0, sizeof(pmp->data));
954
955 p->port_select = port_select;
956 if (pmp->attr_mod != 0 ||
957 (port_select != port && port_select != 0xFF))
958 pmp->status |= IB_SMP_INVALID_FIELD;
959 /*
960 * Ticks are 10x the link transfer period which for 2.5Gbs is 4
961 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample
962 * intervals are counted in ticks. Since we use Linux timers, that
963 * count in jiffies, we can't sample for less than 1000 ticks if HZ
964 * == 1000 (4000 ticks if HZ is 250).
965 */
966 /* XXX This is WRONG. */
967 p->tick = 250; /* 1 usec. */
968 p->counter_width = 4; /* 32 bit counters */
969 p->counter_mask0_9 = COUNTER_MASK0_9;
970 spin_lock_irqsave(&dev->pending_lock, flags);
971 p->sample_status = dev->pma_sample_status;
972 p->sample_start = cpu_to_be32(dev->pma_sample_start);
973 p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
974 p->tag = cpu_to_be16(dev->pma_tag);
975 p->counter_select[0] = dev->pma_counter_select[0];
976 p->counter_select[1] = dev->pma_counter_select[1];
977 p->counter_select[2] = dev->pma_counter_select[2];
978 p->counter_select[3] = dev->pma_counter_select[3];
979 p->counter_select[4] = dev->pma_counter_select[4];
980 spin_unlock_irqrestore(&dev->pending_lock, flags);
981
982 return reply((struct ib_smp *) pmp);
983}
984
985static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
986 struct ib_device *ibdev, u8 port)
987{
988 struct ib_pma_portsamplescontrol *p =
989 (struct ib_pma_portsamplescontrol *)pmp->data;
990 struct ipath_ibdev *dev = to_idev(ibdev);
991 unsigned long flags;
992 u32 start;
993 int ret;
994
995 if (pmp->attr_mod != 0 ||
996 (p->port_select != port && p->port_select != 0xFF)) {
997 pmp->status |= IB_SMP_INVALID_FIELD;
998 ret = reply((struct ib_smp *) pmp);
999 goto bail;
1000 }
1001
1002 start = be32_to_cpu(p->sample_start);
1003 if (start != 0) {
1004 spin_lock_irqsave(&dev->pending_lock, flags);
1005 if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) {
1006 dev->pma_sample_status =
1007 IB_PMA_SAMPLE_STATUS_STARTED;
1008 dev->pma_sample_start = start;
1009 dev->pma_sample_interval =
1010 be32_to_cpu(p->sample_interval);
1011 dev->pma_tag = be16_to_cpu(p->tag);
1012 if (p->counter_select[0])
1013 dev->pma_counter_select[0] =
1014 p->counter_select[0];
1015 if (p->counter_select[1])
1016 dev->pma_counter_select[1] =
1017 p->counter_select[1];
1018 if (p->counter_select[2])
1019 dev->pma_counter_select[2] =
1020 p->counter_select[2];
1021 if (p->counter_select[3])
1022 dev->pma_counter_select[3] =
1023 p->counter_select[3];
1024 if (p->counter_select[4])
1025 dev->pma_counter_select[4] =
1026 p->counter_select[4];
1027 }
1028 spin_unlock_irqrestore(&dev->pending_lock, flags);
1029 }
1030 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
1031
1032bail:
1033 return ret;
1034}
1035
1036static u64 get_counter(struct ipath_ibdev *dev, __be16 sel)
1037{
1038 u64 ret;
1039
1040 switch (sel) {
1041 case IB_PMA_PORT_XMIT_DATA:
1042 ret = dev->ipath_sword;
1043 break;
1044 case IB_PMA_PORT_RCV_DATA:
1045 ret = dev->ipath_rword;
1046 break;
1047 case IB_PMA_PORT_XMIT_PKTS:
1048 ret = dev->ipath_spkts;
1049 break;
1050 case IB_PMA_PORT_RCV_PKTS:
1051 ret = dev->ipath_rpkts;
1052 break;
1053 case IB_PMA_PORT_XMIT_WAIT:
1054 ret = dev->ipath_xmit_wait;
1055 break;
1056 default:
1057 ret = 0;
1058 }
1059
1060 return ret;
1061}
1062
1063static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
1064 struct ib_device *ibdev)
1065{
1066 struct ib_pma_portsamplesresult *p =
1067 (struct ib_pma_portsamplesresult *)pmp->data;
1068 struct ipath_ibdev *dev = to_idev(ibdev);
1069 int i;
1070
1071 memset(pmp->data, 0, sizeof(pmp->data));
1072 p->tag = cpu_to_be16(dev->pma_tag);
1073 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1074 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1075 p->counter[i] = cpu_to_be32(
1076 get_counter(dev, dev->pma_counter_select[i]));
1077
1078 return reply((struct ib_smp *) pmp);
1079}
1080
1081static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1082 struct ib_device *ibdev)
1083{
1084 struct ib_pma_portsamplesresult_ext *p =
1085 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1086 struct ipath_ibdev *dev = to_idev(ibdev);
1087 int i;
1088
1089 memset(pmp->data, 0, sizeof(pmp->data));
1090 p->tag = cpu_to_be16(dev->pma_tag);
1091 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1092 /* 64 bits */
1093 p->extended_width = __constant_cpu_to_be32(0x80000000);
1094 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1095 p->counter[i] = cpu_to_be64(
1096 get_counter(dev, dev->pma_counter_select[i]));
1097
1098 return reply((struct ib_smp *) pmp);
1099}
1100
1101static int recv_pma_get_portcounters(struct ib_perf *pmp,
1102 struct ib_device *ibdev, u8 port)
1103{
1104 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1105 pmp->data;
1106 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1107 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1108 u8 port_select = p->port_select;
1109
34b2aafe 1110 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1111
1112 /* Adjust counters for any resets done. */
443a64ab 1113 cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
e28c00ad 1114 cntrs.link_error_recovery_counter -=
443a64ab
BS		 1115 dev->z_link_error_recovery_counter;
1116 cntrs.link_downed_counter -= dev->z_link_downed_counter;
e28c00ad 1117 cntrs.port_rcv_errors += dev->rcv_errors;
443a64ab
BS		 1118 cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
1119 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
1120 cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
1121 cntrs.port_xmit_data -= dev->z_port_xmit_data;
1122 cntrs.port_rcv_data -= dev->z_port_rcv_data;
1123 cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
1124 cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
fba75200
BS		 1125 cntrs.local_link_integrity_errors -=
1126 dev->z_local_link_integrity_errors;
1127 cntrs.excessive_buffer_overrun_errors -=
1128 dev->z_excessive_buffer_overrun_errors;
e28c00ad
BS		 1129
1130 memset(pmp->data, 0, sizeof(pmp->data));
1131
1132 p->port_select = port_select;
1133 if (pmp->attr_mod != 0 ||
1134 (port_select != port && port_select != 0xFF))
1135 pmp->status |= IB_SMP_INVALID_FIELD;
1136
1137 if (cntrs.symbol_error_counter > 0xFFFFUL)
1138 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
1139 else
1140 p->symbol_error_counter =
1141 cpu_to_be16((u16)cntrs.symbol_error_counter);
1142 if (cntrs.link_error_recovery_counter > 0xFFUL)
1143 p->link_error_recovery_counter = 0xFF;
1144 else
1145 p->link_error_recovery_counter =
1146 (u8)cntrs.link_error_recovery_counter;
1147 if (cntrs.link_downed_counter > 0xFFUL)
1148 p->link_downed_counter = 0xFF;
1149 else
1150 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1151 if (cntrs.port_rcv_errors > 0xFFFFUL)
1152 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
1153 else
1154 p->port_rcv_errors =
1155 cpu_to_be16((u16) cntrs.port_rcv_errors);
1156 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1157 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
1158 else
1159 p->port_rcv_remphys_errors =
1160 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1161 if (cntrs.port_xmit_discards > 0xFFFFUL)
1162 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
1163 else
1164 p->port_xmit_discards =
1165 cpu_to_be16((u16)cntrs.port_xmit_discards);
fba75200
BS		 1166 if (cntrs.local_link_integrity_errors > 0xFUL)
1167 cntrs.local_link_integrity_errors = 0xFUL;
1168 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1169 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1170 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1171 cntrs.excessive_buffer_overrun_errors;
1172 if (dev->n_vl15_dropped > 0xFFFFUL)
1173 p->vl15_dropped = __constant_cpu_to_be16(0xFFFF);
1174 else
1175 p->vl15_dropped = cpu_to_be16((u16)dev->n_vl15_dropped);
e28c00ad
BS		 1176 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1177 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
1178 else
1179 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1180 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1181 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
1182 else
1183 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1184 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1185 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1186 else
1187 p->port_xmit_packets =
1188 cpu_to_be32((u32)cntrs.port_xmit_packets);
1189 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1190 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1191 else
1192 p->port_rcv_packets =
1193 cpu_to_be32((u32) cntrs.port_rcv_packets);
1194
1195 return reply((struct ib_smp *) pmp);
1196}
1197
1198static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
1199 struct ib_device *ibdev, u8 port)
1200{
1201 struct ib_pma_portcounters_ext *p =
1202 (struct ib_pma_portcounters_ext *)pmp->data;
1203 struct ipath_ibdev *dev = to_idev(ibdev);
1204 u64 swords, rwords, spkts, rpkts, xwait;
1205 u8 port_select = p->port_select;
1206
34b2aafe
BS		 1207 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1208 &rpkts, &xwait);
e28c00ad
BS		 1209
1210 /* Adjust counters for any resets done. */
443a64ab
BS		 1211 swords -= dev->z_port_xmit_data;
1212 rwords -= dev->z_port_rcv_data;
1213 spkts -= dev->z_port_xmit_packets;
1214 rpkts -= dev->z_port_rcv_packets;
e28c00ad
BS		 1215
1216 memset(pmp->data, 0, sizeof(pmp->data));
1217
1218 p->port_select = port_select;
1219 if (pmp->attr_mod != 0 ||
1220 (port_select != port && port_select != 0xFF))
1221 pmp->status |= IB_SMP_INVALID_FIELD;
1222
1223 p->port_xmit_data = cpu_to_be64(swords);
1224 p->port_rcv_data = cpu_to_be64(rwords);
1225 p->port_xmit_packets = cpu_to_be64(spkts);
1226 p->port_rcv_packets = cpu_to_be64(rpkts);
1227 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
1228 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
1229 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
1230 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
1231
1232 return reply((struct ib_smp *) pmp);
1233}
1234
1235static int recv_pma_set_portcounters(struct ib_perf *pmp,
1236 struct ib_device *ibdev, u8 port)
1237{
1238 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1239 pmp->data;
1240 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1241 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1242
1243 /*
1244 * Since the HW doesn't support clearing counters, we save the
1245 * current count and subtract it from future responses.
1246 */
34b2aafe 1247 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1248
1249 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
443a64ab 1250 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
e28c00ad
BS		 1251
1252 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
443a64ab 1253 dev->z_link_error_recovery_counter =
e28c00ad
BS		 1254 cntrs.link_error_recovery_counter;
1255
1256 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
443a64ab 1257 dev->z_link_downed_counter = cntrs.link_downed_counter;
e28c00ad
BS		 1258
1259 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
443a64ab 1260 dev->z_port_rcv_errors =
e28c00ad
BS		 1261 cntrs.port_rcv_errors + dev->rcv_errors;
1262
1263 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
443a64ab 1264 dev->z_port_rcv_remphys_errors =
e28c00ad
BS		 1265 cntrs.port_rcv_remphys_errors;
1266
1267 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
443a64ab 1268 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
e28c00ad 1269
fba75200
BS		 1270 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1271 dev->z_local_link_integrity_errors =
1272 cntrs.local_link_integrity_errors;
1273
1274 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1275 dev->z_excessive_buffer_overrun_errors =
1276 cntrs.excessive_buffer_overrun_errors;
1277
1278 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED)
1279 dev->n_vl15_dropped = 0;
1280
e28c00ad 1281 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
443a64ab 1282 dev->z_port_xmit_data = cntrs.port_xmit_data;
e28c00ad
BS		 1283
1284 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
443a64ab 1285 dev->z_port_rcv_data = cntrs.port_rcv_data;
e28c00ad
BS		 1286
1287 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
443a64ab 1288 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
e28c00ad
BS		 1289
1290 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
443a64ab 1291 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
e28c00ad
BS		 1292
1293 return recv_pma_get_portcounters(pmp, ibdev, port);
1294}
1295
1296static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1297 struct ib_device *ibdev, u8 port)
1298{
1299 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1300 pmp->data;
1301 struct ipath_ibdev *dev = to_idev(ibdev);
1302 u64 swords, rwords, spkts, rpkts, xwait;
1303
34b2aafe
BS		 1304 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1305 &rpkts, &xwait);
e28c00ad
BS		 1306
1307 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
443a64ab 1308 dev->z_port_xmit_data = swords;
e28c00ad
BS		 1309
1310 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
443a64ab 1311 dev->z_port_rcv_data = rwords;
e28c00ad
BS		 1312
1313 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
443a64ab 1314 dev->z_port_xmit_packets = spkts;
e28c00ad
BS		 1315
1316 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
443a64ab 1317 dev->z_port_rcv_packets = rpkts;
e28c00ad
BS		 1318
1319 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1320 dev->n_unicast_xmit = 0;
1321
1322 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1323 dev->n_unicast_rcv = 0;
1324
1325 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1326 dev->n_multicast_xmit = 0;
1327
1328 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1329 dev->n_multicast_rcv = 0;
1330
1331 return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1332}
1333
1334static int process_subn(struct ib_device *ibdev, int mad_flags,
1335 u8 port_num, struct ib_mad *in_mad,
1336 struct ib_mad *out_mad)
1337{
1338 struct ib_smp *smp = (struct ib_smp *)out_mad;
1339 struct ipath_ibdev *dev = to_idev(ibdev);
1340 int ret;
1341
1342 *out_mad = *in_mad;
1343 if (smp->class_version != 1) {
1344 smp->status |= IB_SMP_UNSUP_VERSION;
1345 ret = reply(smp);
1346 goto bail;
1347 }
1348
1349 /* Is the mkey in the process of expiring? */
1350 if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1351 /* Clear timeout and mkey protection field. */
1352 dev->mkey_lease_timeout = 0;
1353 dev->mkeyprot_resv_lmc &= 0x3F;
1354 }
1355
1356 /*
1357 * M_Key checking depends on
1358 * Portinfo:M_Key_protect_bits
1359 */
1360 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1361 dev->mkey != smp->mkey &&
1362 (smp->method == IB_MGMT_METHOD_SET ||
1363 (smp->method == IB_MGMT_METHOD_GET &&
1364 (dev->mkeyprot_resv_lmc >> 7) != 0))) {
1365 if (dev->mkey_violations != 0xFFFF)
1366 ++dev->mkey_violations;
1367 if (dev->mkey_lease_timeout ||
1368 dev->mkey_lease_period == 0) {
1369 ret = IB_MAD_RESULT_SUCCESS |
1370 IB_MAD_RESULT_CONSUMED;
1371 goto bail;
1372 }
1373 dev->mkey_lease_timeout = jiffies +
1374 dev->mkey_lease_period * HZ;
1375 /* Future: Generate a trap notice. */
1376 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1377 goto bail;
1378 } else if (dev->mkey_lease_timeout)
1379 dev->mkey_lease_timeout = 0;
1380
1381 switch (smp->method) {
1382 case IB_MGMT_METHOD_GET:
1383 switch (smp->attr_id) {
1384 case IB_SMP_ATTR_NODE_DESC:
1385 ret = recv_subn_get_nodedescription(smp, ibdev);
1386 goto bail;
1387 case IB_SMP_ATTR_NODE_INFO:
1388 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1389 goto bail;
1390 case IB_SMP_ATTR_GUID_INFO:
1391 ret = recv_subn_get_guidinfo(smp, ibdev);
1392 goto bail;
1393 case IB_SMP_ATTR_PORT_INFO:
1394 ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1395 goto bail;
1396 case IB_SMP_ATTR_PKEY_TABLE:
1397 ret = recv_subn_get_pkeytable(smp, ibdev);
1398 goto bail;
1399 case IB_SMP_ATTR_SM_INFO:
1400 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1401 ret = IB_MAD_RESULT_SUCCESS |
1402 IB_MAD_RESULT_CONSUMED;
1403 goto bail;
1404 }
1405 if (dev->port_cap_flags & IB_PORT_SM) {
1406 ret = IB_MAD_RESULT_SUCCESS;
1407 goto bail;
1408 }
1409 /* FALLTHROUGH */
1410 default:
1411 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1412 ret = reply(smp);
1413 goto bail;
1414 }
1415
1416 case IB_MGMT_METHOD_SET:
1417 switch (smp->attr_id) {
1418 case IB_SMP_ATTR_GUID_INFO:
1419 ret = recv_subn_set_guidinfo(smp, ibdev);
1420 goto bail;
1421 case IB_SMP_ATTR_PORT_INFO:
1422 ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1423 goto bail;
1424 case IB_SMP_ATTR_PKEY_TABLE:
1425 ret = recv_subn_set_pkeytable(smp, ibdev);
1426 goto bail;
1427 case IB_SMP_ATTR_SM_INFO:
1428 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1429 ret = IB_MAD_RESULT_SUCCESS |
1430 IB_MAD_RESULT_CONSUMED;
1431 goto bail;
1432 }
1433 if (dev->port_cap_flags & IB_PORT_SM) {
1434 ret = IB_MAD_RESULT_SUCCESS;
1435 goto bail;
1436 }
1437 /* FALLTHROUGH */
1438 default:
1439 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1440 ret = reply(smp);
1441 goto bail;
1442 }
1443
1444 case IB_MGMT_METHOD_GET_RESP:
1445 /*
1446 * The ib_mad module will call us to process responses
1447 * before checking for other consumers.
1448 * Just tell the caller to process it normally.
1449 */
1450 ret = IB_MAD_RESULT_FAILURE;
1451 goto bail;
1452 default:
1453 smp->status |= IB_SMP_UNSUP_METHOD;
1454 ret = reply(smp);
1455 }
1456
1457bail:
1458 return ret;
1459}
1460
1461static int process_perf(struct ib_device *ibdev, u8 port_num,
1462 struct ib_mad *in_mad,
1463 struct ib_mad *out_mad)
1464{
1465 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1466 int ret;
1467
1468 *out_mad = *in_mad;
1469 if (pmp->class_version != 1) {
1470 pmp->status |= IB_SMP_UNSUP_VERSION;
1471 ret = reply((struct ib_smp *) pmp);
1472 goto bail;
1473 }
1474
1475 switch (pmp->method) {
1476 case IB_MGMT_METHOD_GET:
1477 switch (pmp->attr_id) {
1478 case IB_PMA_CLASS_PORT_INFO:
1479 ret = recv_pma_get_classportinfo(pmp);
1480 goto bail;
1481 case IB_PMA_PORT_SAMPLES_CONTROL:
1482 ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1483 port_num);
1484 goto bail;
1485 case IB_PMA_PORT_SAMPLES_RESULT:
1486 ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1487 goto bail;
1488 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1489 ret = recv_pma_get_portsamplesresult_ext(pmp,
1490 ibdev);
1491 goto bail;
1492 case IB_PMA_PORT_COUNTERS:
1493 ret = recv_pma_get_portcounters(pmp, ibdev,
1494 port_num);
1495 goto bail;
1496 case IB_PMA_PORT_COUNTERS_EXT:
1497 ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1498 port_num);
1499 goto bail;
1500 default:
1501 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1502 ret = reply((struct ib_smp *) pmp);
1503 goto bail;
1504 }
1505
1506 case IB_MGMT_METHOD_SET:
1507 switch (pmp->attr_id) {
1508 case IB_PMA_PORT_SAMPLES_CONTROL:
1509 ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1510 port_num);
1511 goto bail;
1512 case IB_PMA_PORT_COUNTERS:
1513 ret = recv_pma_set_portcounters(pmp, ibdev,
1514 port_num);
1515 goto bail;
1516 case IB_PMA_PORT_COUNTERS_EXT:
1517 ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1518 port_num);
1519 goto bail;
1520 default:
1521 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1522 ret = reply((struct ib_smp *) pmp);
1523 goto bail;
1524 }
1525
1526 case IB_MGMT_METHOD_GET_RESP:
1527 /*
1528 * The ib_mad module will call us to process responses
1529 * before checking for other consumers.
1530 * Just tell the caller to process it normally.
1531 */
1532 ret = IB_MAD_RESULT_FAILURE;
1533 goto bail;
1534 default:
1535 pmp->status |= IB_SMP_UNSUP_METHOD;
1536 ret = reply((struct ib_smp *) pmp);
1537 }
1538
1539bail:
1540 return ret;
1541}
1542
1543/**
1544 * ipath_process_mad - process an incoming MAD packet
1545 * @ibdev: the infiniband device this packet came in on
1546 * @mad_flags: MAD flags
1547 * @port_num: the port number this packet came in on
1548 * @in_wc: the work completion entry for this packet
1549 * @in_grh: the global route header for this packet
1550 * @in_mad: the incoming MAD
1551 * @out_mad: any outgoing MAD reply
1552 *
1553 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1554 * interested in processing.
1555 *
1556 * Note that the verbs framework has already done the MAD sanity checks,
1557 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1558 * MADs.
1559 *
1560 * This is called by the ib_mad module.
1561 */
1562int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1563 struct ib_wc *in_wc, struct ib_grh *in_grh,
1564 struct ib_mad *in_mad, struct ib_mad *out_mad)
1565{
e28c00ad
BS		 1566 int ret;
1567
e28c00ad
BS		 1568 switch (in_mad->mad_hdr.mgmt_class) {
1569 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1570 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1571 ret = process_subn(ibdev, mad_flags, port_num,
1572 in_mad, out_mad);
1573 goto bail;
1574 case IB_MGMT_CLASS_PERF_MGMT:
1575 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1576 goto bail;
1577 default:
1578 ret = IB_MAD_RESULT_SUCCESS;
1579 }
1580
1581bail:
1582 return ret;
1583}
Linux kernel - Deliverables
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