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IB/ipath: Support the IBA6110 revision 4
[deliverable/linux.git] / drivers / infiniband / hw / ipath / ipath_mad.c
CommitLineData
e28c00ad 1/*
759d5768 2 * Copyright (c) 2006 QLogic, Inc. 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 */
295 pip->inittypereply_mtucap = IB_MTU_4096;
296 // HCAs ignore VLStallCount and HOQLife
297 /* pip->vlstallcnt_hoqlife; */
298 pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */
299 pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
300 /* P_KeyViolations are counted by hardware. */
301 pip->pkey_violations =
34b2aafe 302 cpu_to_be16((ipath_get_cr_errpkey(dev->dd) -
443a64ab 303 dev->z_pkey_violations) & 0xFFFF);
e28c00ad
BS		 304 pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
305 /* Only the hardware GUID is supported for now */
306 pip->guid_cap = 1;
307 pip->clientrereg_resv_subnetto = dev->subnet_timeout;
308 /* 32.768 usec. response time (guessing) */
309 pip->resv_resptimevalue = 3;
310 pip->localphyerrors_overrunerrors =
34b2aafe
BS		 311 (get_phyerrthreshold(dev->dd) << 4) |
312 get_overrunthreshold(dev->dd);
e28c00ad
BS		 313 /* pip->max_credit_hint; */
314 /* pip->link_roundtrip_latency[3]; */
315
316 ret = reply(smp);
317
318bail:
319 return ret;
320}
321
34b2aafe
BS		 322/**
323 * get_pkeys - return the PKEY table for port 0
324 * @dd: the infinipath device
325 * @pkeys: the pkey table is placed here
326 */
327static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
328{
329 struct ipath_portdata *pd = dd->ipath_pd[0];
330
331 memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
332
333 return 0;
334}
335
e28c00ad
BS		 336static int recv_subn_get_pkeytable(struct ib_smp *smp,
337 struct ib_device *ibdev)
338{
339 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
340 u16 *p = (u16 *) smp->data;
341 __be16 *q = (__be16 *) smp->data;
342
343 /* 64 blocks of 32 16-bit P_Key entries */
344
345 memset(smp->data, 0, sizeof(smp->data));
346 if (startpx == 0) {
347 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 348 unsigned i, n = ipath_get_npkeys(dev->dd);
e28c00ad 349
34b2aafe 350 get_pkeys(dev->dd, p);
e28c00ad
BS		 351
352 for (i = 0; i < n; i++)
353 q[i] = cpu_to_be16(p[i]);
354 } else
355 smp->status |= IB_SMP_INVALID_FIELD;
356
357 return reply(smp);
358}
359
360static int recv_subn_set_guidinfo(struct ib_smp *smp,
361 struct ib_device *ibdev)
362{
363 /* The only GUID we support is the first read-only entry. */
364 return recv_subn_get_guidinfo(smp, ibdev);
365}
366
34b2aafe
BS		 367/**
368 * set_linkdowndefaultstate - set the default linkdown state
369 * @dd: the infinipath device
370 * @sleep: the new state
371 *
372 * Note that this will only take effect when the link state changes.
373 */
374static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep)
375{
376 if (sleep)
377 dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
378 else
379 dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
380 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
381 dd->ipath_ibcctrl);
382 return 0;
383}
384
e28c00ad
BS		 385/**
386 * recv_subn_set_portinfo - set port information
387 * @smp: the incoming SM packet
388 * @ibdev: the infiniband device
389 * @port: the port on the device
390 *
391 * Set Portinfo (see ch. 14.2.5.6).
392 */
393static int recv_subn_set_portinfo(struct ib_smp *smp,
394 struct ib_device *ibdev, u8 port)
395{
da2ab62a 396 struct ib_port_info *pip = (struct ib_port_info *)smp->data;
e28c00ad
BS		 397 struct ib_event event;
398 struct ipath_ibdev *dev;
399 u32 flags;
400 char clientrereg = 0;
401 u16 lid, smlid;
402 u8 lwe;
403 u8 lse;
404 u8 state;
405 u16 lstate;
406 u32 mtu;
34b2aafe 407 int ret, ore;
e28c00ad
BS		 408
409 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
410 goto err;
411
412 dev = to_idev(ibdev);
413 event.device = ibdev;
414 event.element.port_num = port;
415
416 dev->mkey = pip->mkey;
417 dev->gid_prefix = pip->gid_prefix;
418 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
419
420 lid = be16_to_cpu(pip->lid);
34b2aafe 421 if (lid != dev->dd->ipath_lid) {
e28c00ad 422 /* Must be a valid unicast LID address. */
27b678dd 423 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
e28c00ad 424 goto err;
1eb68b99 425 ipath_set_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7);
e28c00ad
BS		 426 event.event = IB_EVENT_LID_CHANGE;
427 ib_dispatch_event(&event);
428 }
429
430 smlid = be16_to_cpu(pip->sm_lid);
431 if (smlid != dev->sm_lid) {
432 /* Must be a valid unicast LID address. */
27b678dd 433 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE)
e28c00ad
BS		 434 goto err;
435 dev->sm_lid = smlid;
436 event.event = IB_EVENT_SM_CHANGE;
437 ib_dispatch_event(&event);
438 }
439
440 /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
441 lwe = pip->link_width_enabled;
442 if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
443 goto err;
444 if (lwe == 0xFF)
445 dev->link_width_enabled = 3; /* 1x or 4x */
446 else if (lwe)
447 dev->link_width_enabled = lwe;
448
449 /* Only 2.5 Gbs supported. */
450 lse = pip->linkspeedactive_enabled & 0xF;
451 if (lse >= 2 && lse <= 0xE)
452 goto err;
453
454 /* Set link down default state. */
455 switch (pip->portphysstate_linkdown & 0xF) {
456 case 0: /* NOP */
457 break;
458 case 1: /* SLEEP */
34b2aafe 459 if (set_linkdowndefaultstate(dev->dd, 1))
e28c00ad
BS		 460 goto err;
461 break;
462 case 2: /* POLL */
34b2aafe 463 if (set_linkdowndefaultstate(dev->dd, 0))
e28c00ad
BS		 464 goto err;
465 break;
466 default:
467 goto err;
468 }
469
470 dev->mkeyprot_resv_lmc = pip->mkeyprot_resv_lmc;
471 dev->vl_high_limit = pip->vl_high_limit;
472
473 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
474 case IB_MTU_256:
475 mtu = 256;
476 break;
477 case IB_MTU_512:
478 mtu = 512;
479 break;
480 case IB_MTU_1024:
481 mtu = 1024;
482 break;
483 case IB_MTU_2048:
484 mtu = 2048;
485 break;
486 case IB_MTU_4096:
487 mtu = 4096;
488 break;
489 default:
490 /* XXX We have already partially updated our state! */
491 goto err;
492 }
34b2aafe 493 ipath_set_mtu(dev->dd, mtu);
e28c00ad
BS		 494
495 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
496
497 /* We only support VL0 */
498 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
499 goto err;
500
501 if (pip->mkey_violations == 0)
502 dev->mkey_violations = 0;
503
504 /*
505 * Hardware counter can't be reset so snapshot and subtract
506 * later.
507 */
508 if (pip->pkey_violations == 0)
34b2aafe 509 dev->z_pkey_violations = ipath_get_cr_errpkey(dev->dd);
e28c00ad
BS		 510
511 if (pip->qkey_violations == 0)
512 dev->qkey_violations = 0;
513
34b2aafe
BS		 514 ore = pip->localphyerrors_overrunerrors;
515 if (set_phyerrthreshold(dev->dd, (ore >> 4) & 0xF))
e28c00ad
BS		 516 goto err;
517
34b2aafe 518 if (set_overrunthreshold(dev->dd, (ore & 0xF)))
e28c00ad
BS		 519 goto err;
520
521 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
522
523 if (pip->clientrereg_resv_subnetto & 0x80) {
524 clientrereg = 1;
6eddb5cb 525 event.event = IB_EVENT_CLIENT_REREGISTER;
e28c00ad
BS		 526 ib_dispatch_event(&event);
527 }
528
529 /*
530 * Do the port state change now that the other link parameters
531 * have been set.
532 * Changing the port physical state only makes sense if the link
533 * is down or is being set to down.
534 */
535 state = pip->linkspeed_portstate & 0xF;
34b2aafe 536 flags = dev->dd->ipath_flags;
e28c00ad
BS		 537 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
538 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
539 goto err;
540
541 /*
542 * Only state changes of DOWN, ARM, and ACTIVE are valid
543 * and must be in the correct state to take effect (see 7.2.6).
544 */
545 switch (state) {
546 case IB_PORT_NOP:
547 if (lstate == 0)
548 break;
549 /* FALLTHROUGH */
550 case IB_PORT_DOWN:
551 if (lstate == 0)
34b2aafe 552 if (get_linkdowndefaultstate(dev->dd))
e28c00ad
BS		 553 lstate = IPATH_IB_LINKDOWN_SLEEP;
554 else
555 lstate = IPATH_IB_LINKDOWN;
556 else if (lstate == 1)
557 lstate = IPATH_IB_LINKDOWN_SLEEP;
558 else if (lstate == 2)
559 lstate = IPATH_IB_LINKDOWN;
560 else if (lstate == 3)
561 lstate = IPATH_IB_LINKDOWN_DISABLE;
562 else
563 goto err;
34b2aafe 564 ipath_set_linkstate(dev->dd, lstate);
e28c00ad
BS		 565 if (flags & IPATH_LINKACTIVE) {
566 event.event = IB_EVENT_PORT_ERR;
567 ib_dispatch_event(&event);
568 }
569 break;
570 case IB_PORT_ARMED:
571 if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE)))
572 break;
34b2aafe 573 ipath_set_linkstate(dev->dd, IPATH_IB_LINKARM);
e28c00ad
BS		 574 if (flags & IPATH_LINKACTIVE) {
575 event.event = IB_EVENT_PORT_ERR;
576 ib_dispatch_event(&event);
577 }
578 break;
579 case IB_PORT_ACTIVE:
580 if (!(flags & IPATH_LINKARMED))
581 break;
34b2aafe 582 ipath_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
e28c00ad
BS		 583 event.event = IB_EVENT_PORT_ACTIVE;
584 ib_dispatch_event(&event);
585 break;
586 default:
587 /* XXX We have already partially updated our state! */
588 goto err;
589 }
590
591 ret = recv_subn_get_portinfo(smp, ibdev, port);
592
593 if (clientrereg)
594 pip->clientrereg_resv_subnetto |= 0x80;
595
596 goto done;
597
598err:
599 smp->status |= IB_SMP_INVALID_FIELD;
600 ret = recv_subn_get_portinfo(smp, ibdev, port);
601
602done:
603 return ret;
604}
605
34b2aafe
BS		 606/**
607 * rm_pkey - decrecment the reference count for the given PKEY
608 * @dd: the infinipath device
609 * @key: the PKEY index
610 *
611 * Return true if this was the last reference and the hardware table entry
612 * needs to be changed.
613 */
614static int rm_pkey(struct ipath_devdata *dd, u16 key)
615{
616 int i;
617 int ret;
618
619 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
620 if (dd->ipath_pkeys[i] != key)
621 continue;
622 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
623 dd->ipath_pkeys[i] = 0;
624 ret = 1;
625 goto bail;
626 }
627 break;
628 }
629
630 ret = 0;
631
632bail:
633 return ret;
634}
635
636/**
637 * add_pkey - add the given PKEY to the hardware table
638 * @dd: the infinipath device
639 * @key: the PKEY
640 *
641 * Return an error code if unable to add the entry, zero if no change,
642 * or 1 if the hardware PKEY register needs to be updated.
643 */
644static int add_pkey(struct ipath_devdata *dd, u16 key)
645{
646 int i;
647 u16 lkey = key & 0x7FFF;
648 int any = 0;
649 int ret;
650
651 if (lkey == 0x7FFF) {
652 ret = 0;
653 goto bail;
654 }
655
656 /* Look for an empty slot or a matching PKEY. */
657 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
658 if (!dd->ipath_pkeys[i]) {
659 any++;
660 continue;
661 }
662 /* If it matches exactly, try to increment the ref count */
663 if (dd->ipath_pkeys[i] == key) {
664 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
665 ret = 0;
666 goto bail;
667 }
668 /* Lost the race. Look for an empty slot below. */
669 atomic_dec(&dd->ipath_pkeyrefs[i]);
670 any++;
671 }
672 /*
673 * It makes no sense to have both the limited and unlimited
674 * PKEY set at the same time since the unlimited one will
675 * disable the limited one.
676 */
677 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
678 ret = -EEXIST;
679 goto bail;
680 }
681 }
682 if (!any) {
683 ret = -EBUSY;
684 goto bail;
685 }
686 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
687 if (!dd->ipath_pkeys[i] &&
688 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
689 /* for ipathstats, etc. */
690 ipath_stats.sps_pkeys[i] = lkey;
691 dd->ipath_pkeys[i] = key;
692 ret = 1;
693 goto bail;
694 }
695 }
696 ret = -EBUSY;
697
698bail:
699 return ret;
700}
701
702/**
703 * set_pkeys - set the PKEY table for port 0
704 * @dd: the infinipath device
705 * @pkeys: the PKEY table
706 */
707static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
708{
709 struct ipath_portdata *pd;
710 int i;
711 int changed = 0;
712
713 pd = dd->ipath_pd[0];
714
715 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
716 u16 key = pkeys[i];
717 u16 okey = pd->port_pkeys[i];
718
719 if (key == okey)
720 continue;
721 /*
722 * The value of this PKEY table entry is changing.
723 * Remove the old entry in the hardware's array of PKEYs.
724 */
725 if (okey & 0x7FFF)
726 changed |= rm_pkey(dd, okey);
727 if (key & 0x7FFF) {
728 int ret = add_pkey(dd, key);
729
730 if (ret < 0)
731 key = 0;
732 else
733 changed |= ret;
734 }
735 pd->port_pkeys[i] = key;
736 }
737 if (changed) {
738 u64 pkey;
739
740 pkey = (u64) dd->ipath_pkeys[0] |
741 ((u64) dd->ipath_pkeys[1] << 16) |
742 ((u64) dd->ipath_pkeys[2] << 32) |
743 ((u64) dd->ipath_pkeys[3] << 48);
744 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
745 (unsigned long long) pkey);
746 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
747 pkey);
748 }
749 return 0;
750}
751
e28c00ad
BS		 752static int recv_subn_set_pkeytable(struct ib_smp *smp,
753 struct ib_device *ibdev)
754{
755 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
756 __be16 *p = (__be16 *) smp->data;
757 u16 *q = (u16 *) smp->data;
758 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 759 unsigned i, n = ipath_get_npkeys(dev->dd);
e28c00ad
BS		 760
761 for (i = 0; i < n; i++)
762 q[i] = be16_to_cpu(p[i]);
763
34b2aafe 764 if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
e28c00ad
BS		 765 smp->status |= IB_SMP_INVALID_FIELD;
766
767 return recv_subn_get_pkeytable(smp, ibdev);
768}
769
770#define IB_PMA_CLASS_PORT_INFO __constant_htons(0x0001)
771#define IB_PMA_PORT_SAMPLES_CONTROL __constant_htons(0x0010)
772#define IB_PMA_PORT_SAMPLES_RESULT __constant_htons(0x0011)
773#define IB_PMA_PORT_COUNTERS __constant_htons(0x0012)
774#define IB_PMA_PORT_COUNTERS_EXT __constant_htons(0x001D)
775#define IB_PMA_PORT_SAMPLES_RESULT_EXT __constant_htons(0x001E)
776
777struct ib_perf {
778 u8 base_version;
779 u8 mgmt_class;
780 u8 class_version;
781 u8 method;
782 __be16 status;
783 __be16 unused;
784 __be64 tid;
785 __be16 attr_id;
786 __be16 resv;
787 __be32 attr_mod;
788 u8 reserved[40];
789 u8 data[192];
790} __attribute__ ((packed));
791
792struct ib_pma_classportinfo {
793 u8 base_version;
794 u8 class_version;
795 __be16 cap_mask;
796 u8 reserved[3];
797 u8 resp_time_value; /* only lower 5 bits */
798 union ib_gid redirect_gid;
799 __be32 redirect_tc_sl_fl; /* 8, 4, 20 bits respectively */
800 __be16 redirect_lid;
801 __be16 redirect_pkey;
802 __be32 redirect_qp; /* only lower 24 bits */
803 __be32 redirect_qkey;
804 union ib_gid trap_gid;
805 __be32 trap_tc_sl_fl; /* 8, 4, 20 bits respectively */
806 __be16 trap_lid;
807 __be16 trap_pkey;
808 __be32 trap_hl_qp; /* 8, 24 bits respectively */
809 __be32 trap_qkey;
810} __attribute__ ((packed));
811
812struct ib_pma_portsamplescontrol {
813 u8 opcode;
814 u8 port_select;
815 u8 tick;
816 u8 counter_width; /* only lower 3 bits */
817 __be32 counter_mask0_9; /* 2, 10 * 3, bits */
818 __be16 counter_mask10_14; /* 1, 5 * 3, bits */
819 u8 sample_mechanisms;
820 u8 sample_status; /* only lower 2 bits */
821 __be64 option_mask;
822 __be64 vendor_mask;
823 __be32 sample_start;
824 __be32 sample_interval;
825 __be16 tag;
826 __be16 counter_select[15];
827} __attribute__ ((packed));
828
829struct ib_pma_portsamplesresult {
830 __be16 tag;
831 __be16 sample_status; /* only lower 2 bits */
832 __be32 counter[15];
833} __attribute__ ((packed));
834
835struct ib_pma_portsamplesresult_ext {
836 __be16 tag;
837 __be16 sample_status; /* only lower 2 bits */
838 __be32 extended_width; /* only upper 2 bits */
839 __be64 counter[15];
840} __attribute__ ((packed));
841
842struct ib_pma_portcounters {
843 u8 reserved;
844 u8 port_select;
845 __be16 counter_select;
846 __be16 symbol_error_counter;
847 u8 link_error_recovery_counter;
848 u8 link_downed_counter;
849 __be16 port_rcv_errors;
850 __be16 port_rcv_remphys_errors;
851 __be16 port_rcv_switch_relay_errors;
852 __be16 port_xmit_discards;
853 u8 port_xmit_constraint_errors;
854 u8 port_rcv_constraint_errors;
855 u8 reserved1;
856 u8 lli_ebor_errors; /* 4, 4, bits */
857 __be16 reserved2;
858 __be16 vl15_dropped;
859 __be32 port_xmit_data;
860 __be32 port_rcv_data;
861 __be32 port_xmit_packets;
862 __be32 port_rcv_packets;
863} __attribute__ ((packed));
864
865#define IB_PMA_SEL_SYMBOL_ERROR __constant_htons(0x0001)
866#define IB_PMA_SEL_LINK_ERROR_RECOVERY __constant_htons(0x0002)
867#define IB_PMA_SEL_LINK_DOWNED __constant_htons(0x0004)
868#define IB_PMA_SEL_PORT_RCV_ERRORS __constant_htons(0x0008)
869#define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS __constant_htons(0x0010)
870#define IB_PMA_SEL_PORT_XMIT_DISCARDS __constant_htons(0x0040)
fba75200
BS		 871#define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS __constant_htons(0x0200)
872#define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS __constant_htons(0x0400)
873#define IB_PMA_SEL_PORT_VL15_DROPPED __constant_htons(0x0800)
e28c00ad
BS		 874#define IB_PMA_SEL_PORT_XMIT_DATA __constant_htons(0x1000)
875#define IB_PMA_SEL_PORT_RCV_DATA __constant_htons(0x2000)
876#define IB_PMA_SEL_PORT_XMIT_PACKETS __constant_htons(0x4000)
877#define IB_PMA_SEL_PORT_RCV_PACKETS __constant_htons(0x8000)
878
879struct ib_pma_portcounters_ext {
880 u8 reserved;
881 u8 port_select;
882 __be16 counter_select;
883 __be32 reserved1;
884 __be64 port_xmit_data;
885 __be64 port_rcv_data;
886 __be64 port_xmit_packets;
887 __be64 port_rcv_packets;
888 __be64 port_unicast_xmit_packets;
889 __be64 port_unicast_rcv_packets;
890 __be64 port_multicast_xmit_packets;
891 __be64 port_multicast_rcv_packets;
892} __attribute__ ((packed));
893
894#define IB_PMA_SELX_PORT_XMIT_DATA __constant_htons(0x0001)
895#define IB_PMA_SELX_PORT_RCV_DATA __constant_htons(0x0002)
896#define IB_PMA_SELX_PORT_XMIT_PACKETS __constant_htons(0x0004)
897#define IB_PMA_SELX_PORT_RCV_PACKETS __constant_htons(0x0008)
898#define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS __constant_htons(0x0010)
899#define IB_PMA_SELX_PORT_UNI_RCV_PACKETS __constant_htons(0x0020)
900#define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS __constant_htons(0x0040)
901#define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS __constant_htons(0x0080)
902
903static int recv_pma_get_classportinfo(struct ib_perf *pmp)
904{
905 struct ib_pma_classportinfo *p =
906 (struct ib_pma_classportinfo *)pmp->data;
907
908 memset(pmp->data, 0, sizeof(pmp->data));
909
910 if (pmp->attr_mod != 0)
911 pmp->status |= IB_SMP_INVALID_FIELD;
912
913 /* Indicate AllPortSelect is valid (only one port anyway) */
914 p->cap_mask = __constant_cpu_to_be16(1 << 8);
915 p->base_version = 1;
916 p->class_version = 1;
917 /*
918 * Expected response time is 4.096 usec. * 2^18 == 1.073741824
919 * sec.
920 */
921 p->resp_time_value = 18;
922
923 return reply((struct ib_smp *) pmp);
924}
925
926/*
927 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
928 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
929 * We support 5 counters which only count the mandatory quantities.
930 */
931#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
932#define COUNTER_MASK0_9 \
933 __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
934 COUNTER_MASK(1, 1) | \
935 COUNTER_MASK(1, 2) | \
936 COUNTER_MASK(1, 3) | \
937 COUNTER_MASK(1, 4))
938
939static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
940 struct ib_device *ibdev, u8 port)
941{
942 struct ib_pma_portsamplescontrol *p =
943 (struct ib_pma_portsamplescontrol *)pmp->data;
944 struct ipath_ibdev *dev = to_idev(ibdev);
945 unsigned long flags;
946 u8 port_select = p->port_select;
947
948 memset(pmp->data, 0, sizeof(pmp->data));
949
950 p->port_select = port_select;
951 if (pmp->attr_mod != 0 ||
952 (port_select != port && port_select != 0xFF))
953 pmp->status |= IB_SMP_INVALID_FIELD;
954 /*
955 * Ticks are 10x the link transfer period which for 2.5Gbs is 4
956 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample
957 * intervals are counted in ticks. Since we use Linux timers, that
958 * count in jiffies, we can't sample for less than 1000 ticks if HZ
959 * == 1000 (4000 ticks if HZ is 250).
960 */
961 /* XXX This is WRONG. */
962 p->tick = 250; /* 1 usec. */
963 p->counter_width = 4; /* 32 bit counters */
964 p->counter_mask0_9 = COUNTER_MASK0_9;
965 spin_lock_irqsave(&dev->pending_lock, flags);
966 p->sample_status = dev->pma_sample_status;
967 p->sample_start = cpu_to_be32(dev->pma_sample_start);
968 p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
969 p->tag = cpu_to_be16(dev->pma_tag);
970 p->counter_select[0] = dev->pma_counter_select[0];
971 p->counter_select[1] = dev->pma_counter_select[1];
972 p->counter_select[2] = dev->pma_counter_select[2];
973 p->counter_select[3] = dev->pma_counter_select[3];
974 p->counter_select[4] = dev->pma_counter_select[4];
975 spin_unlock_irqrestore(&dev->pending_lock, flags);
976
977 return reply((struct ib_smp *) pmp);
978}
979
980static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
981 struct ib_device *ibdev, u8 port)
982{
983 struct ib_pma_portsamplescontrol *p =
984 (struct ib_pma_portsamplescontrol *)pmp->data;
985 struct ipath_ibdev *dev = to_idev(ibdev);
986 unsigned long flags;
987 u32 start;
988 int ret;
989
990 if (pmp->attr_mod != 0 ||
991 (p->port_select != port && p->port_select != 0xFF)) {
992 pmp->status |= IB_SMP_INVALID_FIELD;
993 ret = reply((struct ib_smp *) pmp);
994 goto bail;
995 }
996
997 start = be32_to_cpu(p->sample_start);
998 if (start != 0) {
999 spin_lock_irqsave(&dev->pending_lock, flags);
1000 if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) {
1001 dev->pma_sample_status =
1002 IB_PMA_SAMPLE_STATUS_STARTED;
1003 dev->pma_sample_start = start;
1004 dev->pma_sample_interval =
1005 be32_to_cpu(p->sample_interval);
1006 dev->pma_tag = be16_to_cpu(p->tag);
1007 if (p->counter_select[0])
1008 dev->pma_counter_select[0] =
1009 p->counter_select[0];
1010 if (p->counter_select[1])
1011 dev->pma_counter_select[1] =
1012 p->counter_select[1];
1013 if (p->counter_select[2])
1014 dev->pma_counter_select[2] =
1015 p->counter_select[2];
1016 if (p->counter_select[3])
1017 dev->pma_counter_select[3] =
1018 p->counter_select[3];
1019 if (p->counter_select[4])
1020 dev->pma_counter_select[4] =
1021 p->counter_select[4];
1022 }
1023 spin_unlock_irqrestore(&dev->pending_lock, flags);
1024 }
1025 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
1026
1027bail:
1028 return ret;
1029}
1030
1031static u64 get_counter(struct ipath_ibdev *dev, __be16 sel)
1032{
1033 u64 ret;
1034
1035 switch (sel) {
1036 case IB_PMA_PORT_XMIT_DATA:
1037 ret = dev->ipath_sword;
1038 break;
1039 case IB_PMA_PORT_RCV_DATA:
1040 ret = dev->ipath_rword;
1041 break;
1042 case IB_PMA_PORT_XMIT_PKTS:
1043 ret = dev->ipath_spkts;
1044 break;
1045 case IB_PMA_PORT_RCV_PKTS:
1046 ret = dev->ipath_rpkts;
1047 break;
1048 case IB_PMA_PORT_XMIT_WAIT:
1049 ret = dev->ipath_xmit_wait;
1050 break;
1051 default:
1052 ret = 0;
1053 }
1054
1055 return ret;
1056}
1057
1058static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
1059 struct ib_device *ibdev)
1060{
1061 struct ib_pma_portsamplesresult *p =
1062 (struct ib_pma_portsamplesresult *)pmp->data;
1063 struct ipath_ibdev *dev = to_idev(ibdev);
1064 int i;
1065
1066 memset(pmp->data, 0, sizeof(pmp->data));
1067 p->tag = cpu_to_be16(dev->pma_tag);
1068 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1069 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1070 p->counter[i] = cpu_to_be32(
1071 get_counter(dev, dev->pma_counter_select[i]));
1072
1073 return reply((struct ib_smp *) pmp);
1074}
1075
1076static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1077 struct ib_device *ibdev)
1078{
1079 struct ib_pma_portsamplesresult_ext *p =
1080 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1081 struct ipath_ibdev *dev = to_idev(ibdev);
1082 int i;
1083
1084 memset(pmp->data, 0, sizeof(pmp->data));
1085 p->tag = cpu_to_be16(dev->pma_tag);
1086 p->sample_status = cpu_to_be16(dev->pma_sample_status);
1087 /* 64 bits */
1088 p->extended_width = __constant_cpu_to_be32(0x80000000);
1089 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
1090 p->counter[i] = cpu_to_be64(
1091 get_counter(dev, dev->pma_counter_select[i]));
1092
1093 return reply((struct ib_smp *) pmp);
1094}
1095
1096static int recv_pma_get_portcounters(struct ib_perf *pmp,
1097 struct ib_device *ibdev, u8 port)
1098{
1099 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1100 pmp->data;
1101 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1102 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1103 u8 port_select = p->port_select;
1104
34b2aafe 1105 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1106
1107 /* Adjust counters for any resets done. */
443a64ab 1108 cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
e28c00ad 1109 cntrs.link_error_recovery_counter -=
443a64ab
BS		 1110 dev->z_link_error_recovery_counter;
1111 cntrs.link_downed_counter -= dev->z_link_downed_counter;
e28c00ad 1112 cntrs.port_rcv_errors += dev->rcv_errors;
443a64ab
BS		 1113 cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
1114 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
1115 cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
1116 cntrs.port_xmit_data -= dev->z_port_xmit_data;
1117 cntrs.port_rcv_data -= dev->z_port_rcv_data;
1118 cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
1119 cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
fba75200
BS		 1120 cntrs.local_link_integrity_errors -=
1121 dev->z_local_link_integrity_errors;
1122 cntrs.excessive_buffer_overrun_errors -=
1123 dev->z_excessive_buffer_overrun_errors;
e28c00ad
BS		 1124
1125 memset(pmp->data, 0, sizeof(pmp->data));
1126
1127 p->port_select = port_select;
1128 if (pmp->attr_mod != 0 ||
1129 (port_select != port && port_select != 0xFF))
1130 pmp->status |= IB_SMP_INVALID_FIELD;
1131
1132 if (cntrs.symbol_error_counter > 0xFFFFUL)
1133 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
1134 else
1135 p->symbol_error_counter =
1136 cpu_to_be16((u16)cntrs.symbol_error_counter);
1137 if (cntrs.link_error_recovery_counter > 0xFFUL)
1138 p->link_error_recovery_counter = 0xFF;
1139 else
1140 p->link_error_recovery_counter =
1141 (u8)cntrs.link_error_recovery_counter;
1142 if (cntrs.link_downed_counter > 0xFFUL)
1143 p->link_downed_counter = 0xFF;
1144 else
1145 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1146 if (cntrs.port_rcv_errors > 0xFFFFUL)
1147 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
1148 else
1149 p->port_rcv_errors =
1150 cpu_to_be16((u16) cntrs.port_rcv_errors);
1151 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1152 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
1153 else
1154 p->port_rcv_remphys_errors =
1155 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1156 if (cntrs.port_xmit_discards > 0xFFFFUL)
1157 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
1158 else
1159 p->port_xmit_discards =
1160 cpu_to_be16((u16)cntrs.port_xmit_discards);
fba75200
BS		 1161 if (cntrs.local_link_integrity_errors > 0xFUL)
1162 cntrs.local_link_integrity_errors = 0xFUL;
1163 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1164 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1165 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1166 cntrs.excessive_buffer_overrun_errors;
1167 if (dev->n_vl15_dropped > 0xFFFFUL)
1168 p->vl15_dropped = __constant_cpu_to_be16(0xFFFF);
1169 else
1170 p->vl15_dropped = cpu_to_be16((u16)dev->n_vl15_dropped);
e28c00ad
BS		 1171 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1172 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
1173 else
1174 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1175 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1176 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
1177 else
1178 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1179 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1180 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1181 else
1182 p->port_xmit_packets =
1183 cpu_to_be32((u32)cntrs.port_xmit_packets);
1184 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1185 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1186 else
1187 p->port_rcv_packets =
1188 cpu_to_be32((u32) cntrs.port_rcv_packets);
1189
1190 return reply((struct ib_smp *) pmp);
1191}
1192
1193static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
1194 struct ib_device *ibdev, u8 port)
1195{
1196 struct ib_pma_portcounters_ext *p =
1197 (struct ib_pma_portcounters_ext *)pmp->data;
1198 struct ipath_ibdev *dev = to_idev(ibdev);
1199 u64 swords, rwords, spkts, rpkts, xwait;
1200 u8 port_select = p->port_select;
1201
34b2aafe
BS		 1202 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1203 &rpkts, &xwait);
e28c00ad
BS		 1204
1205 /* Adjust counters for any resets done. */
443a64ab
BS		 1206 swords -= dev->z_port_xmit_data;
1207 rwords -= dev->z_port_rcv_data;
1208 spkts -= dev->z_port_xmit_packets;
1209 rpkts -= dev->z_port_rcv_packets;
e28c00ad
BS		 1210
1211 memset(pmp->data, 0, sizeof(pmp->data));
1212
1213 p->port_select = port_select;
1214 if (pmp->attr_mod != 0 ||
1215 (port_select != port && port_select != 0xFF))
1216 pmp->status |= IB_SMP_INVALID_FIELD;
1217
1218 p->port_xmit_data = cpu_to_be64(swords);
1219 p->port_rcv_data = cpu_to_be64(rwords);
1220 p->port_xmit_packets = cpu_to_be64(spkts);
1221 p->port_rcv_packets = cpu_to_be64(rpkts);
1222 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
1223 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
1224 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
1225 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
1226
1227 return reply((struct ib_smp *) pmp);
1228}
1229
1230static int recv_pma_set_portcounters(struct ib_perf *pmp,
1231 struct ib_device *ibdev, u8 port)
1232{
1233 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1234 pmp->data;
1235 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1236 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1237
1238 /*
1239 * Since the HW doesn't support clearing counters, we save the
1240 * current count and subtract it from future responses.
1241 */
34b2aafe 1242 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1243
1244 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
443a64ab 1245 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
e28c00ad
BS		 1246
1247 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
443a64ab 1248 dev->z_link_error_recovery_counter =
e28c00ad
BS		 1249 cntrs.link_error_recovery_counter;
1250
1251 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
443a64ab 1252 dev->z_link_downed_counter = cntrs.link_downed_counter;
e28c00ad
BS		 1253
1254 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
443a64ab 1255 dev->z_port_rcv_errors =
e28c00ad
BS		 1256 cntrs.port_rcv_errors + dev->rcv_errors;
1257
1258 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
443a64ab 1259 dev->z_port_rcv_remphys_errors =
e28c00ad
BS		 1260 cntrs.port_rcv_remphys_errors;
1261
1262 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
443a64ab 1263 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
e28c00ad 1264
fba75200
BS		 1265 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1266 dev->z_local_link_integrity_errors =
1267 cntrs.local_link_integrity_errors;
1268
1269 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1270 dev->z_excessive_buffer_overrun_errors =
1271 cntrs.excessive_buffer_overrun_errors;
1272
1273 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED)
1274 dev->n_vl15_dropped = 0;
1275
e28c00ad 1276 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
443a64ab 1277 dev->z_port_xmit_data = cntrs.port_xmit_data;
e28c00ad
BS		 1278
1279 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
443a64ab 1280 dev->z_port_rcv_data = cntrs.port_rcv_data;
e28c00ad
BS		 1281
1282 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
443a64ab 1283 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
e28c00ad
BS		 1284
1285 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
443a64ab 1286 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
e28c00ad
BS		 1287
1288 return recv_pma_get_portcounters(pmp, ibdev, port);
1289}
1290
1291static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1292 struct ib_device *ibdev, u8 port)
1293{
1294 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1295 pmp->data;
1296 struct ipath_ibdev *dev = to_idev(ibdev);
1297 u64 swords, rwords, spkts, rpkts, xwait;
1298
34b2aafe
BS		 1299 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1300 &rpkts, &xwait);
e28c00ad
BS		 1301
1302 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
443a64ab 1303 dev->z_port_xmit_data = swords;
e28c00ad
BS		 1304
1305 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
443a64ab 1306 dev->z_port_rcv_data = rwords;
e28c00ad
BS		 1307
1308 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
443a64ab 1309 dev->z_port_xmit_packets = spkts;
e28c00ad
BS		 1310
1311 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
443a64ab 1312 dev->z_port_rcv_packets = rpkts;
e28c00ad
BS		 1313
1314 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1315 dev->n_unicast_xmit = 0;
1316
1317 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1318 dev->n_unicast_rcv = 0;
1319
1320 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1321 dev->n_multicast_xmit = 0;
1322
1323 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1324 dev->n_multicast_rcv = 0;
1325
1326 return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1327}
1328
1329static int process_subn(struct ib_device *ibdev, int mad_flags,
1330 u8 port_num, struct ib_mad *in_mad,
1331 struct ib_mad *out_mad)
1332{
1333 struct ib_smp *smp = (struct ib_smp *)out_mad;
1334 struct ipath_ibdev *dev = to_idev(ibdev);
1335 int ret;
1336
1337 *out_mad = *in_mad;
1338 if (smp->class_version != 1) {
1339 smp->status |= IB_SMP_UNSUP_VERSION;
1340 ret = reply(smp);
1341 goto bail;
1342 }
1343
1344 /* Is the mkey in the process of expiring? */
1345 if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1346 /* Clear timeout and mkey protection field. */
1347 dev->mkey_lease_timeout = 0;
1348 dev->mkeyprot_resv_lmc &= 0x3F;
1349 }
1350
1351 /*
1352 * M_Key checking depends on
1353 * Portinfo:M_Key_protect_bits
1354 */
1355 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1356 dev->mkey != smp->mkey &&
1357 (smp->method == IB_MGMT_METHOD_SET ||
1358 (smp->method == IB_MGMT_METHOD_GET &&
1359 (dev->mkeyprot_resv_lmc >> 7) != 0))) {
1360 if (dev->mkey_violations != 0xFFFF)
1361 ++dev->mkey_violations;
1362 if (dev->mkey_lease_timeout ||
1363 dev->mkey_lease_period == 0) {
1364 ret = IB_MAD_RESULT_SUCCESS |
1365 IB_MAD_RESULT_CONSUMED;
1366 goto bail;
1367 }
1368 dev->mkey_lease_timeout = jiffies +
1369 dev->mkey_lease_period * HZ;
1370 /* Future: Generate a trap notice. */
1371 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1372 goto bail;
1373 } else if (dev->mkey_lease_timeout)
1374 dev->mkey_lease_timeout = 0;
1375
1376 switch (smp->method) {
1377 case IB_MGMT_METHOD_GET:
1378 switch (smp->attr_id) {
1379 case IB_SMP_ATTR_NODE_DESC:
1380 ret = recv_subn_get_nodedescription(smp, ibdev);
1381 goto bail;
1382 case IB_SMP_ATTR_NODE_INFO:
1383 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1384 goto bail;
1385 case IB_SMP_ATTR_GUID_INFO:
1386 ret = recv_subn_get_guidinfo(smp, ibdev);
1387 goto bail;
1388 case IB_SMP_ATTR_PORT_INFO:
1389 ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1390 goto bail;
1391 case IB_SMP_ATTR_PKEY_TABLE:
1392 ret = recv_subn_get_pkeytable(smp, ibdev);
1393 goto bail;
1394 case IB_SMP_ATTR_SM_INFO:
1395 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1396 ret = IB_MAD_RESULT_SUCCESS |
1397 IB_MAD_RESULT_CONSUMED;
1398 goto bail;
1399 }
1400 if (dev->port_cap_flags & IB_PORT_SM) {
1401 ret = IB_MAD_RESULT_SUCCESS;
1402 goto bail;
1403 }
1404 /* FALLTHROUGH */
1405 default:
1406 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1407 ret = reply(smp);
1408 goto bail;
1409 }
1410
1411 case IB_MGMT_METHOD_SET:
1412 switch (smp->attr_id) {
1413 case IB_SMP_ATTR_GUID_INFO:
1414 ret = recv_subn_set_guidinfo(smp, ibdev);
1415 goto bail;
1416 case IB_SMP_ATTR_PORT_INFO:
1417 ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1418 goto bail;
1419 case IB_SMP_ATTR_PKEY_TABLE:
1420 ret = recv_subn_set_pkeytable(smp, ibdev);
1421 goto bail;
1422 case IB_SMP_ATTR_SM_INFO:
1423 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1424 ret = IB_MAD_RESULT_SUCCESS |
1425 IB_MAD_RESULT_CONSUMED;
1426 goto bail;
1427 }
1428 if (dev->port_cap_flags & IB_PORT_SM) {
1429 ret = IB_MAD_RESULT_SUCCESS;
1430 goto bail;
1431 }
1432 /* FALLTHROUGH */
1433 default:
1434 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1435 ret = reply(smp);
1436 goto bail;
1437 }
1438
1439 case IB_MGMT_METHOD_GET_RESP:
1440 /*
1441 * The ib_mad module will call us to process responses
1442 * before checking for other consumers.
1443 * Just tell the caller to process it normally.
1444 */
1445 ret = IB_MAD_RESULT_FAILURE;
1446 goto bail;
1447 default:
1448 smp->status |= IB_SMP_UNSUP_METHOD;
1449 ret = reply(smp);
1450 }
1451
1452bail:
1453 return ret;
1454}
1455
1456static int process_perf(struct ib_device *ibdev, u8 port_num,
1457 struct ib_mad *in_mad,
1458 struct ib_mad *out_mad)
1459{
1460 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1461 int ret;
1462
1463 *out_mad = *in_mad;
1464 if (pmp->class_version != 1) {
1465 pmp->status |= IB_SMP_UNSUP_VERSION;
1466 ret = reply((struct ib_smp *) pmp);
1467 goto bail;
1468 }
1469
1470 switch (pmp->method) {
1471 case IB_MGMT_METHOD_GET:
1472 switch (pmp->attr_id) {
1473 case IB_PMA_CLASS_PORT_INFO:
1474 ret = recv_pma_get_classportinfo(pmp);
1475 goto bail;
1476 case IB_PMA_PORT_SAMPLES_CONTROL:
1477 ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1478 port_num);
1479 goto bail;
1480 case IB_PMA_PORT_SAMPLES_RESULT:
1481 ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1482 goto bail;
1483 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1484 ret = recv_pma_get_portsamplesresult_ext(pmp,
1485 ibdev);
1486 goto bail;
1487 case IB_PMA_PORT_COUNTERS:
1488 ret = recv_pma_get_portcounters(pmp, ibdev,
1489 port_num);
1490 goto bail;
1491 case IB_PMA_PORT_COUNTERS_EXT:
1492 ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1493 port_num);
1494 goto bail;
1495 default:
1496 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1497 ret = reply((struct ib_smp *) pmp);
1498 goto bail;
1499 }
1500
1501 case IB_MGMT_METHOD_SET:
1502 switch (pmp->attr_id) {
1503 case IB_PMA_PORT_SAMPLES_CONTROL:
1504 ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1505 port_num);
1506 goto bail;
1507 case IB_PMA_PORT_COUNTERS:
1508 ret = recv_pma_set_portcounters(pmp, ibdev,
1509 port_num);
1510 goto bail;
1511 case IB_PMA_PORT_COUNTERS_EXT:
1512 ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1513 port_num);
1514 goto bail;
1515 default:
1516 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1517 ret = reply((struct ib_smp *) pmp);
1518 goto bail;
1519 }
1520
1521 case IB_MGMT_METHOD_GET_RESP:
1522 /*
1523 * The ib_mad module will call us to process responses
1524 * before checking for other consumers.
1525 * Just tell the caller to process it normally.
1526 */
1527 ret = IB_MAD_RESULT_FAILURE;
1528 goto bail;
1529 default:
1530 pmp->status |= IB_SMP_UNSUP_METHOD;
1531 ret = reply((struct ib_smp *) pmp);
1532 }
1533
1534bail:
1535 return ret;
1536}
1537
1538/**
1539 * ipath_process_mad - process an incoming MAD packet
1540 * @ibdev: the infiniband device this packet came in on
1541 * @mad_flags: MAD flags
1542 * @port_num: the port number this packet came in on
1543 * @in_wc: the work completion entry for this packet
1544 * @in_grh: the global route header for this packet
1545 * @in_mad: the incoming MAD
1546 * @out_mad: any outgoing MAD reply
1547 *
1548 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1549 * interested in processing.
1550 *
1551 * Note that the verbs framework has already done the MAD sanity checks,
1552 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1553 * MADs.
1554 *
1555 * This is called by the ib_mad module.
1556 */
1557int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1558 struct ib_wc *in_wc, struct ib_grh *in_grh,
1559 struct ib_mad *in_mad, struct ib_mad *out_mad)
1560{
e28c00ad
BS		 1561 int ret;
1562
e28c00ad
BS		 1563 switch (in_mad->mad_hdr.mgmt_class) {
1564 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1565 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1566 ret = process_subn(ibdev, mad_flags, port_num,
1567 in_mad, out_mad);
1568 goto bail;
1569 case IB_MGMT_CLASS_PERF_MGMT:
1570 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1571 goto bail;
1572 default:
1573 ret = IB_MAD_RESULT_SUCCESS;
1574 }
1575
1576bail:
1577 return ret;
1578}
Linux kernel - Deliverables
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