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IB/ipath: Fix IB compliance problems with link state vs physical state
[net-next-2.6.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;
f41d2298 106 nip->port_guid = dd->ipath_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 ||
542869a1 248 dev->mkeyprot == 0)
e28c00ad
BS		 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);
542869a1 267 pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dev->dd->ipath_lmc;
e28c00ad 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;
542869a1 404 struct ipath_devdata *dd;
e28c00ad
BS		 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);
542869a1 418 dd = dev->dd;
e28c00ad
BS		 419 event.device = ibdev;
420 event.element.port_num = port;
421
422 dev->mkey = pip->mkey;
423 dev->gid_prefix = pip->gid_prefix;
424 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
425
426 lid = be16_to_cpu(pip->lid);
542869a1
RC		 427 if (dd->ipath_lid != lid ||
428 dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) {
e28c00ad 429 /* Must be a valid unicast LID address. */
27b678dd 430 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
e28c00ad 431 goto err;
542869a1 432 ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7);
e28c00ad
BS		 433 event.event = IB_EVENT_LID_CHANGE;
434 ib_dispatch_event(&event);
435 }
436
437 smlid = be16_to_cpu(pip->sm_lid);
438 if (smlid != dev->sm_lid) {
439 /* Must be a valid unicast LID address. */
27b678dd 440 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE)
e28c00ad
BS		 441 goto err;
442 dev->sm_lid = smlid;
443 event.event = IB_EVENT_SM_CHANGE;
444 ib_dispatch_event(&event);
445 }
446
447 /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
448 lwe = pip->link_width_enabled;
449 if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
450 goto err;
451 if (lwe == 0xFF)
452 dev->link_width_enabled = 3; /* 1x or 4x */
453 else if (lwe)
454 dev->link_width_enabled = lwe;
455
456 /* Only 2.5 Gbs supported. */
457 lse = pip->linkspeedactive_enabled & 0xF;
458 if (lse >= 2 && lse <= 0xE)
459 goto err;
460
461 /* Set link down default state. */
462 switch (pip->portphysstate_linkdown & 0xF) {
463 case 0: /* NOP */
464 break;
465 case 1: /* SLEEP */
542869a1 466 if (set_linkdowndefaultstate(dd, 1))
e28c00ad
BS		 467 goto err;
468 break;
469 case 2: /* POLL */
542869a1 470 if (set_linkdowndefaultstate(dd, 0))
e28c00ad
BS		 471 goto err;
472 break;
473 default:
474 goto err;
475 }
476
542869a1 477 dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
e28c00ad
BS		 478 dev->vl_high_limit = pip->vl_high_limit;
479
480 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
481 case IB_MTU_256:
482 mtu = 256;
483 break;
484 case IB_MTU_512:
485 mtu = 512;
486 break;
487 case IB_MTU_1024:
488 mtu = 1024;
489 break;
490 case IB_MTU_2048:
491 mtu = 2048;
492 break;
493 case IB_MTU_4096:
494 mtu = 4096;
495 break;
496 default:
497 /* XXX We have already partially updated our state! */
498 goto err;
499 }
542869a1 500 ipath_set_mtu(dd, mtu);
e28c00ad
BS		 501
502 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
503
504 /* We only support VL0 */
505 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
506 goto err;
507
508 if (pip->mkey_violations == 0)
509 dev->mkey_violations = 0;
510
511 /*
512 * Hardware counter can't be reset so snapshot and subtract
513 * later.
514 */
515 if (pip->pkey_violations == 0)
542869a1 516 dev->z_pkey_violations = ipath_get_cr_errpkey(dd);
e28c00ad
BS		 517
518 if (pip->qkey_violations == 0)
519 dev->qkey_violations = 0;
520
34b2aafe 521 ore = pip->localphyerrors_overrunerrors;
542869a1 522 if (set_phyerrthreshold(dd, (ore >> 4) & 0xF))
e28c00ad
BS		 523 goto err;
524
542869a1 525 if (set_overrunthreshold(dd, (ore & 0xF)))
e28c00ad
BS		 526 goto err;
527
528 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
529
530 if (pip->clientrereg_resv_subnetto & 0x80) {
531 clientrereg = 1;
6eddb5cb 532 event.event = IB_EVENT_CLIENT_REREGISTER;
e28c00ad
BS		 533 ib_dispatch_event(&event);
534 }
535
536 /*
537 * Do the port state change now that the other link parameters
538 * have been set.
539 * Changing the port physical state only makes sense if the link
540 * is down or is being set to down.
541 */
542 state = pip->linkspeed_portstate & 0xF;
e28c00ad
BS		 543 lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
544 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
545 goto err;
546
547 /*
548 * Only state changes of DOWN, ARM, and ACTIVE are valid
549 * and must be in the correct state to take effect (see 7.2.6).
550 */
551 switch (state) {
552 case IB_PORT_NOP:
553 if (lstate == 0)
554 break;
555 /* FALLTHROUGH */
556 case IB_PORT_DOWN:
557 if (lstate == 0)
140277e9 558 lstate = IPATH_IB_LINKDOWN_ONLY;
e28c00ad
BS		 559 else if (lstate == 1)
560 lstate = IPATH_IB_LINKDOWN_SLEEP;
561 else if (lstate == 2)
562 lstate = IPATH_IB_LINKDOWN;
563 else if (lstate == 3)
564 lstate = IPATH_IB_LINKDOWN_DISABLE;
565 else
566 goto err;
542869a1 567 ipath_set_linkstate(dd, lstate);
140277e9
RC		 568 ipath_wait_linkstate(dd, IPATH_LINKINIT | IPATH_LINKARMED |
569 IPATH_LINKACTIVE, 1000);
e28c00ad
BS		 570 break;
571 case IB_PORT_ARMED:
542869a1 572 ipath_set_linkstate(dd, IPATH_IB_LINKARM);
e28c00ad
BS		 573 break;
574 case IB_PORT_ACTIVE:
542869a1 575 ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE);
e28c00ad
BS		 576 break;
577 default:
578 /* XXX We have already partially updated our state! */
579 goto err;
580 }
581
582 ret = recv_subn_get_portinfo(smp, ibdev, port);
583
584 if (clientrereg)
585 pip->clientrereg_resv_subnetto |= 0x80;
586
587 goto done;
588
589err:
590 smp->status |= IB_SMP_INVALID_FIELD;
591 ret = recv_subn_get_portinfo(smp, ibdev, port);
592
593done:
594 return ret;
595}
596
34b2aafe
BS		 597/**
598 * rm_pkey - decrecment the reference count for the given PKEY
599 * @dd: the infinipath device
600 * @key: the PKEY index
601 *
602 * Return true if this was the last reference and the hardware table entry
603 * needs to be changed.
604 */
605static int rm_pkey(struct ipath_devdata *dd, u16 key)
606{
607 int i;
608 int ret;
609
610 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
611 if (dd->ipath_pkeys[i] != key)
612 continue;
613 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
614 dd->ipath_pkeys[i] = 0;
615 ret = 1;
616 goto bail;
617 }
618 break;
619 }
620
621 ret = 0;
622
623bail:
624 return ret;
625}
626
627/**
628 * add_pkey - add the given PKEY to the hardware table
629 * @dd: the infinipath device
630 * @key: the PKEY
631 *
632 * Return an error code if unable to add the entry, zero if no change,
633 * or 1 if the hardware PKEY register needs to be updated.
634 */
635static int add_pkey(struct ipath_devdata *dd, u16 key)
636{
637 int i;
638 u16 lkey = key & 0x7FFF;
639 int any = 0;
640 int ret;
641
642 if (lkey == 0x7FFF) {
643 ret = 0;
644 goto bail;
645 }
646
647 /* Look for an empty slot or a matching PKEY. */
648 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
649 if (!dd->ipath_pkeys[i]) {
650 any++;
651 continue;
652 }
653 /* If it matches exactly, try to increment the ref count */
654 if (dd->ipath_pkeys[i] == key) {
655 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
656 ret = 0;
657 goto bail;
658 }
659 /* Lost the race. Look for an empty slot below. */
660 atomic_dec(&dd->ipath_pkeyrefs[i]);
661 any++;
662 }
663 /*
664 * It makes no sense to have both the limited and unlimited
665 * PKEY set at the same time since the unlimited one will
666 * disable the limited one.
667 */
668 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
669 ret = -EEXIST;
670 goto bail;
671 }
672 }
673 if (!any) {
674 ret = -EBUSY;
675 goto bail;
676 }
677 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
678 if (!dd->ipath_pkeys[i] &&
679 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
680 /* for ipathstats, etc. */
681 ipath_stats.sps_pkeys[i] = lkey;
682 dd->ipath_pkeys[i] = key;
683 ret = 1;
684 goto bail;
685 }
686 }
687 ret = -EBUSY;
688
689bail:
690 return ret;
691}
692
693/**
694 * set_pkeys - set the PKEY table for port 0
695 * @dd: the infinipath device
696 * @pkeys: the PKEY table
697 */
698static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
699{
700 struct ipath_portdata *pd;
701 int i;
702 int changed = 0;
703
704 pd = dd->ipath_pd[0];
705
706 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
707 u16 key = pkeys[i];
708 u16 okey = pd->port_pkeys[i];
709
710 if (key == okey)
711 continue;
712 /*
713 * The value of this PKEY table entry is changing.
714 * Remove the old entry in the hardware's array of PKEYs.
715 */
716 if (okey & 0x7FFF)
717 changed |= rm_pkey(dd, okey);
718 if (key & 0x7FFF) {
719 int ret = add_pkey(dd, key);
720
721 if (ret < 0)
722 key = 0;
723 else
724 changed |= ret;
725 }
726 pd->port_pkeys[i] = key;
727 }
728 if (changed) {
729 u64 pkey;
730
731 pkey = (u64) dd->ipath_pkeys[0] |
732 ((u64) dd->ipath_pkeys[1] << 16) |
733 ((u64) dd->ipath_pkeys[2] << 32) |
734 ((u64) dd->ipath_pkeys[3] << 48);
735 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
736 (unsigned long long) pkey);
737 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
738 pkey);
739 }
740 return 0;
741}
742
e28c00ad
BS		 743static int recv_subn_set_pkeytable(struct ib_smp *smp,
744 struct ib_device *ibdev)
745{
746 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
747 __be16 *p = (__be16 *) smp->data;
748 u16 *q = (u16 *) smp->data;
749 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 750 unsigned i, n = ipath_get_npkeys(dev->dd);
e28c00ad
BS		 751
752 for (i = 0; i < n; i++)
753 q[i] = be16_to_cpu(p[i]);
754
34b2aafe 755 if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
e28c00ad
BS		 756 smp->status |= IB_SMP_INVALID_FIELD;
757
758 return recv_subn_get_pkeytable(smp, ibdev);
759}
760
761#define IB_PMA_CLASS_PORT_INFO __constant_htons(0x0001)
762#define IB_PMA_PORT_SAMPLES_CONTROL __constant_htons(0x0010)
763#define IB_PMA_PORT_SAMPLES_RESULT __constant_htons(0x0011)
764#define IB_PMA_PORT_COUNTERS __constant_htons(0x0012)
765#define IB_PMA_PORT_COUNTERS_EXT __constant_htons(0x001D)
766#define IB_PMA_PORT_SAMPLES_RESULT_EXT __constant_htons(0x001E)
767
768struct ib_perf {
769 u8 base_version;
770 u8 mgmt_class;
771 u8 class_version;
772 u8 method;
773 __be16 status;
774 __be16 unused;
775 __be64 tid;
776 __be16 attr_id;
777 __be16 resv;
778 __be32 attr_mod;
779 u8 reserved[40];
780 u8 data[192];
781} __attribute__ ((packed));
782
783struct ib_pma_classportinfo {
784 u8 base_version;
785 u8 class_version;
786 __be16 cap_mask;
787 u8 reserved[3];
788 u8 resp_time_value; /* only lower 5 bits */
789 union ib_gid redirect_gid;
790 __be32 redirect_tc_sl_fl; /* 8, 4, 20 bits respectively */
791 __be16 redirect_lid;
792 __be16 redirect_pkey;
793 __be32 redirect_qp; /* only lower 24 bits */
794 __be32 redirect_qkey;
795 union ib_gid trap_gid;
796 __be32 trap_tc_sl_fl; /* 8, 4, 20 bits respectively */
797 __be16 trap_lid;
798 __be16 trap_pkey;
799 __be32 trap_hl_qp; /* 8, 24 bits respectively */
800 __be32 trap_qkey;
801} __attribute__ ((packed));
802
803struct ib_pma_portsamplescontrol {
804 u8 opcode;
805 u8 port_select;
806 u8 tick;
807 u8 counter_width; /* only lower 3 bits */
808 __be32 counter_mask0_9; /* 2, 10 * 3, bits */
809 __be16 counter_mask10_14; /* 1, 5 * 3, bits */
810 u8 sample_mechanisms;
811 u8 sample_status; /* only lower 2 bits */
812 __be64 option_mask;
813 __be64 vendor_mask;
814 __be32 sample_start;
815 __be32 sample_interval;
816 __be16 tag;
817 __be16 counter_select[15];
818} __attribute__ ((packed));
819
820struct ib_pma_portsamplesresult {
821 __be16 tag;
822 __be16 sample_status; /* only lower 2 bits */
823 __be32 counter[15];
824} __attribute__ ((packed));
825
826struct ib_pma_portsamplesresult_ext {
827 __be16 tag;
828 __be16 sample_status; /* only lower 2 bits */
829 __be32 extended_width; /* only upper 2 bits */
830 __be64 counter[15];
831} __attribute__ ((packed));
832
833struct ib_pma_portcounters {
834 u8 reserved;
835 u8 port_select;
836 __be16 counter_select;
837 __be16 symbol_error_counter;
838 u8 link_error_recovery_counter;
839 u8 link_downed_counter;
840 __be16 port_rcv_errors;
841 __be16 port_rcv_remphys_errors;
842 __be16 port_rcv_switch_relay_errors;
843 __be16 port_xmit_discards;
844 u8 port_xmit_constraint_errors;
845 u8 port_rcv_constraint_errors;
846 u8 reserved1;
847 u8 lli_ebor_errors; /* 4, 4, bits */
848 __be16 reserved2;
849 __be16 vl15_dropped;
850 __be32 port_xmit_data;
851 __be32 port_rcv_data;
852 __be32 port_xmit_packets;
853 __be32 port_rcv_packets;
854} __attribute__ ((packed));
855
856#define IB_PMA_SEL_SYMBOL_ERROR __constant_htons(0x0001)
857#define IB_PMA_SEL_LINK_ERROR_RECOVERY __constant_htons(0x0002)
858#define IB_PMA_SEL_LINK_DOWNED __constant_htons(0x0004)
859#define IB_PMA_SEL_PORT_RCV_ERRORS __constant_htons(0x0008)
860#define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS __constant_htons(0x0010)
861#define IB_PMA_SEL_PORT_XMIT_DISCARDS __constant_htons(0x0040)
fba75200
BS		 862#define IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS __constant_htons(0x0200)
863#define IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS __constant_htons(0x0400)
864#define IB_PMA_SEL_PORT_VL15_DROPPED __constant_htons(0x0800)
e28c00ad
BS		 865#define IB_PMA_SEL_PORT_XMIT_DATA __constant_htons(0x1000)
866#define IB_PMA_SEL_PORT_RCV_DATA __constant_htons(0x2000)
867#define IB_PMA_SEL_PORT_XMIT_PACKETS __constant_htons(0x4000)
868#define IB_PMA_SEL_PORT_RCV_PACKETS __constant_htons(0x8000)
869
870struct ib_pma_portcounters_ext {
871 u8 reserved;
872 u8 port_select;
873 __be16 counter_select;
874 __be32 reserved1;
875 __be64 port_xmit_data;
876 __be64 port_rcv_data;
877 __be64 port_xmit_packets;
878 __be64 port_rcv_packets;
879 __be64 port_unicast_xmit_packets;
880 __be64 port_unicast_rcv_packets;
881 __be64 port_multicast_xmit_packets;
882 __be64 port_multicast_rcv_packets;
883} __attribute__ ((packed));
884
885#define IB_PMA_SELX_PORT_XMIT_DATA __constant_htons(0x0001)
886#define IB_PMA_SELX_PORT_RCV_DATA __constant_htons(0x0002)
887#define IB_PMA_SELX_PORT_XMIT_PACKETS __constant_htons(0x0004)
888#define IB_PMA_SELX_PORT_RCV_PACKETS __constant_htons(0x0008)
889#define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS __constant_htons(0x0010)
890#define IB_PMA_SELX_PORT_UNI_RCV_PACKETS __constant_htons(0x0020)
891#define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS __constant_htons(0x0040)
892#define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS __constant_htons(0x0080)
893
894static int recv_pma_get_classportinfo(struct ib_perf *pmp)
895{
896 struct ib_pma_classportinfo *p =
897 (struct ib_pma_classportinfo *)pmp->data;
898
899 memset(pmp->data, 0, sizeof(pmp->data));
900
901 if (pmp->attr_mod != 0)
902 pmp->status |= IB_SMP_INVALID_FIELD;
903
904 /* Indicate AllPortSelect is valid (only one port anyway) */
905 p->cap_mask = __constant_cpu_to_be16(1 << 8);
906 p->base_version = 1;
907 p->class_version = 1;
908 /*
909 * Expected response time is 4.096 usec. * 2^18 == 1.073741824
910 * sec.
911 */
912 p->resp_time_value = 18;
913
914 return reply((struct ib_smp *) pmp);
915}
916
917/*
918 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
919 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
920 * We support 5 counters which only count the mandatory quantities.
921 */
922#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
923#define COUNTER_MASK0_9 \
924 __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
925 COUNTER_MASK(1, 1) | \
926 COUNTER_MASK(1, 2) | \
927 COUNTER_MASK(1, 3) | \
928 COUNTER_MASK(1, 4))
929
930static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
931 struct ib_device *ibdev, u8 port)
932{
933 struct ib_pma_portsamplescontrol *p =
934 (struct ib_pma_portsamplescontrol *)pmp->data;
935 struct ipath_ibdev *dev = to_idev(ibdev);
6c719cae 936 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
e28c00ad
BS		 937 unsigned long flags;
938 u8 port_select = p->port_select;
939
940 memset(pmp->data, 0, sizeof(pmp->data));
941
942 p->port_select = port_select;
943 if (pmp->attr_mod != 0 ||
944 (port_select != port && port_select != 0xFF))
945 pmp->status |= IB_SMP_INVALID_FIELD;
946 /*
947 * Ticks are 10x the link transfer period which for 2.5Gbs is 4
948 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample
949 * intervals are counted in ticks. Since we use Linux timers, that
950 * count in jiffies, we can't sample for less than 1000 ticks if HZ
951 * == 1000 (4000 ticks if HZ is 250).
952 */
953 /* XXX This is WRONG. */
954 p->tick = 250; /* 1 usec. */
955 p->counter_width = 4; /* 32 bit counters */
956 p->counter_mask0_9 = COUNTER_MASK0_9;
957 spin_lock_irqsave(&dev->pending_lock, flags);
6c719cae
RC		 958 if (crp->cr_psstat)
959 p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat);
960 else
961 p->sample_status = dev->pma_sample_status;
e28c00ad
BS		 962 p->sample_start = cpu_to_be32(dev->pma_sample_start);
963 p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
964 p->tag = cpu_to_be16(dev->pma_tag);
965 p->counter_select[0] = dev->pma_counter_select[0];
966 p->counter_select[1] = dev->pma_counter_select[1];
967 p->counter_select[2] = dev->pma_counter_select[2];
968 p->counter_select[3] = dev->pma_counter_select[3];
969 p->counter_select[4] = dev->pma_counter_select[4];
970 spin_unlock_irqrestore(&dev->pending_lock, flags);
971
972 return reply((struct ib_smp *) pmp);
973}
974
975static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
976 struct ib_device *ibdev, u8 port)
977{
978 struct ib_pma_portsamplescontrol *p =
979 (struct ib_pma_portsamplescontrol *)pmp->data;
980 struct ipath_ibdev *dev = to_idev(ibdev);
6c719cae 981 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
e28c00ad 982 unsigned long flags;
6c719cae 983 u8 status;
e28c00ad
BS		 984 int ret;
985
986 if (pmp->attr_mod != 0 ||
987 (p->port_select != port && p->port_select != 0xFF)) {
988 pmp->status |= IB_SMP_INVALID_FIELD;
989 ret = reply((struct ib_smp *) pmp);
990 goto bail;
991 }
992
6c719cae
RC		 993 spin_lock_irqsave(&dev->pending_lock, flags);
994 if (crp->cr_psstat)
995 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
996 else
997 status = dev->pma_sample_status;
998 if (status == IB_PMA_SAMPLE_STATUS_DONE) {
999 dev->pma_sample_start = be32_to_cpu(p->sample_start);
1000 dev->pma_sample_interval = be32_to_cpu(p->sample_interval);
1001 dev->pma_tag = be16_to_cpu(p->tag);
1002 dev->pma_counter_select[0] = p->counter_select[0];
1003 dev->pma_counter_select[1] = p->counter_select[1];
1004 dev->pma_counter_select[2] = p->counter_select[2];
1005 dev->pma_counter_select[3] = p->counter_select[3];
1006 dev->pma_counter_select[4] = p->counter_select[4];
1007 if (crp->cr_psstat) {
1008 ipath_write_creg(dev->dd, crp->cr_psinterval,
1009 dev->pma_sample_interval);
1010 ipath_write_creg(dev->dd, crp->cr_psstart,
1011 dev->pma_sample_start);
1012 } else
1013 dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED;
e28c00ad 1014 }
6c719cae
RC		 1015 spin_unlock_irqrestore(&dev->pending_lock, flags);
1016
e28c00ad
BS		 1017 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
1018
1019bail:
1020 return ret;
1021}
1022
6c719cae
RC		 1023static u64 get_counter(struct ipath_ibdev *dev,
1024 struct ipath_cregs const *crp,
1025 __be16 sel)
e28c00ad
BS		 1026{
1027 u64 ret;
1028
1029 switch (sel) {
1030 case IB_PMA_PORT_XMIT_DATA:
6c719cae
RC		 1031 ret = (crp->cr_psxmitdatacount) ?
1032 ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) :
1033 dev->ipath_sword;
e28c00ad
BS		 1034 break;
1035 case IB_PMA_PORT_RCV_DATA:
6c719cae
RC		 1036 ret = (crp->cr_psrcvdatacount) ?
1037 ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) :
1038 dev->ipath_rword;
e28c00ad
BS		 1039 break;
1040 case IB_PMA_PORT_XMIT_PKTS:
6c719cae
RC		 1041 ret = (crp->cr_psxmitpktscount) ?
1042 ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) :
1043 dev->ipath_spkts;
e28c00ad
BS		 1044 break;
1045 case IB_PMA_PORT_RCV_PKTS:
6c719cae
RC		 1046 ret = (crp->cr_psrcvpktscount) ?
1047 ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) :
1048 dev->ipath_rpkts;
e28c00ad
BS		 1049 break;
1050 case IB_PMA_PORT_XMIT_WAIT:
6c719cae
RC		 1051 ret = (crp->cr_psxmitwaitcount) ?
1052 ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) :
1053 dev->ipath_xmit_wait;
e28c00ad
BS		 1054 break;
1055 default:
1056 ret = 0;
1057 }
1058
1059 return ret;
1060}
1061
1062static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
1063 struct ib_device *ibdev)
1064{
1065 struct ib_pma_portsamplesresult *p =
1066 (struct ib_pma_portsamplesresult *)pmp->data;
1067 struct ipath_ibdev *dev = to_idev(ibdev);
6c719cae
RC		 1068 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
1069 u8 status;
e28c00ad
BS		 1070 int i;
1071
1072 memset(pmp->data, 0, sizeof(pmp->data));
1073 p->tag = cpu_to_be16(dev->pma_tag);
6c719cae
RC		 1074 if (crp->cr_psstat)
1075 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
1076 else
1077 status = dev->pma_sample_status;
1078 p->sample_status = cpu_to_be16(status);
e28c00ad 1079 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
6c719cae
RC		 1080 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 :
1081 cpu_to_be32(
1082 get_counter(dev, crp, dev->pma_counter_select[i]));
e28c00ad
BS		 1083
1084 return reply((struct ib_smp *) pmp);
1085}
1086
1087static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
1088 struct ib_device *ibdev)
1089{
1090 struct ib_pma_portsamplesresult_ext *p =
1091 (struct ib_pma_portsamplesresult_ext *)pmp->data;
1092 struct ipath_ibdev *dev = to_idev(ibdev);
6c719cae
RC		 1093 struct ipath_cregs const *crp = dev->dd->ipath_cregs;
1094 u8 status;
e28c00ad
BS		 1095 int i;
1096
1097 memset(pmp->data, 0, sizeof(pmp->data));
1098 p->tag = cpu_to_be16(dev->pma_tag);
6c719cae
RC		 1099 if (crp->cr_psstat)
1100 status = ipath_read_creg32(dev->dd, crp->cr_psstat);
1101 else
1102 status = dev->pma_sample_status;
1103 p->sample_status = cpu_to_be16(status);
e28c00ad
BS		 1104 /* 64 bits */
1105 p->extended_width = __constant_cpu_to_be32(0x80000000);
1106 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
6c719cae
RC		 1107 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 :
1108 cpu_to_be64(
1109 get_counter(dev, crp, dev->pma_counter_select[i]));
e28c00ad
BS		 1110
1111 return reply((struct ib_smp *) pmp);
1112}
1113
1114static int recv_pma_get_portcounters(struct ib_perf *pmp,
1115 struct ib_device *ibdev, u8 port)
1116{
1117 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1118 pmp->data;
1119 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1120 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1121 u8 port_select = p->port_select;
1122
34b2aafe 1123 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1124
1125 /* Adjust counters for any resets done. */
443a64ab 1126 cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
e28c00ad 1127 cntrs.link_error_recovery_counter -=
443a64ab
BS		 1128 dev->z_link_error_recovery_counter;
1129 cntrs.link_downed_counter -= dev->z_link_downed_counter;
e28c00ad 1130 cntrs.port_rcv_errors += dev->rcv_errors;
443a64ab
BS		 1131 cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
1132 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
1133 cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
1134 cntrs.port_xmit_data -= dev->z_port_xmit_data;
1135 cntrs.port_rcv_data -= dev->z_port_rcv_data;
1136 cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
1137 cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
fba75200
BS		 1138 cntrs.local_link_integrity_errors -=
1139 dev->z_local_link_integrity_errors;
1140 cntrs.excessive_buffer_overrun_errors -=
1141 dev->z_excessive_buffer_overrun_errors;
6c719cae
RC		 1142 cntrs.vl15_dropped -= dev->z_vl15_dropped;
1143 cntrs.vl15_dropped += dev->n_vl15_dropped;
e28c00ad
BS		 1144
1145 memset(pmp->data, 0, sizeof(pmp->data));
1146
1147 p->port_select = port_select;
1148 if (pmp->attr_mod != 0 ||
1149 (port_select != port && port_select != 0xFF))
1150 pmp->status |= IB_SMP_INVALID_FIELD;
1151
1152 if (cntrs.symbol_error_counter > 0xFFFFUL)
1153 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
1154 else
1155 p->symbol_error_counter =
1156 cpu_to_be16((u16)cntrs.symbol_error_counter);
1157 if (cntrs.link_error_recovery_counter > 0xFFUL)
1158 p->link_error_recovery_counter = 0xFF;
1159 else
1160 p->link_error_recovery_counter =
1161 (u8)cntrs.link_error_recovery_counter;
1162 if (cntrs.link_downed_counter > 0xFFUL)
1163 p->link_downed_counter = 0xFF;
1164 else
1165 p->link_downed_counter = (u8)cntrs.link_downed_counter;
1166 if (cntrs.port_rcv_errors > 0xFFFFUL)
1167 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
1168 else
1169 p->port_rcv_errors =
1170 cpu_to_be16((u16) cntrs.port_rcv_errors);
1171 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
1172 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
1173 else
1174 p->port_rcv_remphys_errors =
1175 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
1176 if (cntrs.port_xmit_discards > 0xFFFFUL)
1177 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
1178 else
1179 p->port_xmit_discards =
1180 cpu_to_be16((u16)cntrs.port_xmit_discards);
fba75200
BS		 1181 if (cntrs.local_link_integrity_errors > 0xFUL)
1182 cntrs.local_link_integrity_errors = 0xFUL;
1183 if (cntrs.excessive_buffer_overrun_errors > 0xFUL)
1184 cntrs.excessive_buffer_overrun_errors = 0xFUL;
1185 p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) |
1186 cntrs.excessive_buffer_overrun_errors;
6c719cae 1187 if (cntrs.vl15_dropped > 0xFFFFUL)
fba75200
BS		 1188 p->vl15_dropped = __constant_cpu_to_be16(0xFFFF);
1189 else
6c719cae 1190 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped);
e28c00ad
BS		 1191 if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
1192 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
1193 else
1194 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
1195 if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
1196 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
1197 else
1198 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
1199 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
1200 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1201 else
1202 p->port_xmit_packets =
1203 cpu_to_be32((u32)cntrs.port_xmit_packets);
1204 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
1205 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
1206 else
1207 p->port_rcv_packets =
1208 cpu_to_be32((u32) cntrs.port_rcv_packets);
1209
1210 return reply((struct ib_smp *) pmp);
1211}
1212
1213static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
1214 struct ib_device *ibdev, u8 port)
1215{
1216 struct ib_pma_portcounters_ext *p =
1217 (struct ib_pma_portcounters_ext *)pmp->data;
1218 struct ipath_ibdev *dev = to_idev(ibdev);
1219 u64 swords, rwords, spkts, rpkts, xwait;
1220 u8 port_select = p->port_select;
1221
34b2aafe
BS		 1222 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1223 &rpkts, &xwait);
e28c00ad
BS		 1224
1225 /* Adjust counters for any resets done. */
443a64ab
BS		 1226 swords -= dev->z_port_xmit_data;
1227 rwords -= dev->z_port_rcv_data;
1228 spkts -= dev->z_port_xmit_packets;
1229 rpkts -= dev->z_port_rcv_packets;
e28c00ad
BS		 1230
1231 memset(pmp->data, 0, sizeof(pmp->data));
1232
1233 p->port_select = port_select;
1234 if (pmp->attr_mod != 0 ||
1235 (port_select != port && port_select != 0xFF))
1236 pmp->status |= IB_SMP_INVALID_FIELD;
1237
1238 p->port_xmit_data = cpu_to_be64(swords);
1239 p->port_rcv_data = cpu_to_be64(rwords);
1240 p->port_xmit_packets = cpu_to_be64(spkts);
1241 p->port_rcv_packets = cpu_to_be64(rpkts);
1242 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
1243 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
1244 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
1245 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
1246
1247 return reply((struct ib_smp *) pmp);
1248}
1249
1250static int recv_pma_set_portcounters(struct ib_perf *pmp,
1251 struct ib_device *ibdev, u8 port)
1252{
1253 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1254 pmp->data;
1255 struct ipath_ibdev *dev = to_idev(ibdev);
34b2aafe 1256 struct ipath_verbs_counters cntrs;
e28c00ad
BS		 1257
1258 /*
1259 * Since the HW doesn't support clearing counters, we save the
1260 * current count and subtract it from future responses.
1261 */
34b2aafe 1262 ipath_get_counters(dev->dd, &cntrs);
e28c00ad
BS		 1263
1264 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
443a64ab 1265 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
e28c00ad
BS		 1266
1267 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
443a64ab 1268 dev->z_link_error_recovery_counter =
e28c00ad
BS		 1269 cntrs.link_error_recovery_counter;
1270
1271 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
443a64ab 1272 dev->z_link_downed_counter = cntrs.link_downed_counter;
e28c00ad
BS		 1273
1274 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
443a64ab 1275 dev->z_port_rcv_errors =
e28c00ad
BS		 1276 cntrs.port_rcv_errors + dev->rcv_errors;
1277
1278 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
443a64ab 1279 dev->z_port_rcv_remphys_errors =
e28c00ad
BS		 1280 cntrs.port_rcv_remphys_errors;
1281
1282 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
443a64ab 1283 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
e28c00ad 1284
fba75200
BS		 1285 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS)
1286 dev->z_local_link_integrity_errors =
1287 cntrs.local_link_integrity_errors;
1288
1289 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS)
1290 dev->z_excessive_buffer_overrun_errors =
1291 cntrs.excessive_buffer_overrun_errors;
1292
6c719cae 1293 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) {
fba75200 1294 dev->n_vl15_dropped = 0;
6c719cae
RC		 1295 dev->z_vl15_dropped = cntrs.vl15_dropped;
1296 }
fba75200 1297
e28c00ad 1298 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
443a64ab 1299 dev->z_port_xmit_data = cntrs.port_xmit_data;
e28c00ad
BS		 1300
1301 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
443a64ab 1302 dev->z_port_rcv_data = cntrs.port_rcv_data;
e28c00ad
BS		 1303
1304 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
443a64ab 1305 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
e28c00ad
BS		 1306
1307 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
443a64ab 1308 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
e28c00ad
BS		 1309
1310 return recv_pma_get_portcounters(pmp, ibdev, port);
1311}
1312
1313static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1314 struct ib_device *ibdev, u8 port)
1315{
1316 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1317 pmp->data;
1318 struct ipath_ibdev *dev = to_idev(ibdev);
1319 u64 swords, rwords, spkts, rpkts, xwait;
1320
34b2aafe
BS		 1321 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1322 &rpkts, &xwait);
e28c00ad
BS		 1323
1324 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
443a64ab 1325 dev->z_port_xmit_data = swords;
e28c00ad
BS		 1326
1327 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
443a64ab 1328 dev->z_port_rcv_data = rwords;
e28c00ad
BS		 1329
1330 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
443a64ab 1331 dev->z_port_xmit_packets = spkts;
e28c00ad
BS		 1332
1333 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
443a64ab 1334 dev->z_port_rcv_packets = rpkts;
e28c00ad
BS		 1335
1336 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1337 dev->n_unicast_xmit = 0;
1338
1339 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1340 dev->n_unicast_rcv = 0;
1341
1342 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1343 dev->n_multicast_xmit = 0;
1344
1345 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1346 dev->n_multicast_rcv = 0;
1347
1348 return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1349}
1350
1351static int process_subn(struct ib_device *ibdev, int mad_flags,
1352 u8 port_num, struct ib_mad *in_mad,
1353 struct ib_mad *out_mad)
1354{
1355 struct ib_smp *smp = (struct ib_smp *)out_mad;
1356 struct ipath_ibdev *dev = to_idev(ibdev);
1357 int ret;
1358
1359 *out_mad = *in_mad;
1360 if (smp->class_version != 1) {
1361 smp->status |= IB_SMP_UNSUP_VERSION;
1362 ret = reply(smp);
1363 goto bail;
1364 }
1365
1366 /* Is the mkey in the process of expiring? */
1367 if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1368 /* Clear timeout and mkey protection field. */
1369 dev->mkey_lease_timeout = 0;
542869a1 1370 dev->mkeyprot = 0;
e28c00ad
BS		 1371 }
1372
1373 /*
1374 * M_Key checking depends on
1375 * Portinfo:M_Key_protect_bits
1376 */
1377 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1378 dev->mkey != smp->mkey &&
1379 (smp->method == IB_MGMT_METHOD_SET ||
1380 (smp->method == IB_MGMT_METHOD_GET &&
542869a1 1381 dev->mkeyprot >= 2))) {
e28c00ad
BS		 1382 if (dev->mkey_violations != 0xFFFF)
1383 ++dev->mkey_violations;
1384 if (dev->mkey_lease_timeout ||
1385 dev->mkey_lease_period == 0) {
1386 ret = IB_MAD_RESULT_SUCCESS |
1387 IB_MAD_RESULT_CONSUMED;
1388 goto bail;
1389 }
1390 dev->mkey_lease_timeout = jiffies +
1391 dev->mkey_lease_period * HZ;
1392 /* Future: Generate a trap notice. */
1393 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1394 goto bail;
1395 } else if (dev->mkey_lease_timeout)
1396 dev->mkey_lease_timeout = 0;
1397
1398 switch (smp->method) {
1399 case IB_MGMT_METHOD_GET:
1400 switch (smp->attr_id) {
1401 case IB_SMP_ATTR_NODE_DESC:
1402 ret = recv_subn_get_nodedescription(smp, ibdev);
1403 goto bail;
1404 case IB_SMP_ATTR_NODE_INFO:
1405 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1406 goto bail;
1407 case IB_SMP_ATTR_GUID_INFO:
1408 ret = recv_subn_get_guidinfo(smp, ibdev);
1409 goto bail;
1410 case IB_SMP_ATTR_PORT_INFO:
1411 ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1412 goto bail;
1413 case IB_SMP_ATTR_PKEY_TABLE:
1414 ret = recv_subn_get_pkeytable(smp, ibdev);
1415 goto bail;
1416 case IB_SMP_ATTR_SM_INFO:
1417 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1418 ret = IB_MAD_RESULT_SUCCESS |
1419 IB_MAD_RESULT_CONSUMED;
1420 goto bail;
1421 }
1422 if (dev->port_cap_flags & IB_PORT_SM) {
1423 ret = IB_MAD_RESULT_SUCCESS;
1424 goto bail;
1425 }
1426 /* FALLTHROUGH */
1427 default:
1428 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1429 ret = reply(smp);
1430 goto bail;
1431 }
1432
1433 case IB_MGMT_METHOD_SET:
1434 switch (smp->attr_id) {
1435 case IB_SMP_ATTR_GUID_INFO:
1436 ret = recv_subn_set_guidinfo(smp, ibdev);
1437 goto bail;
1438 case IB_SMP_ATTR_PORT_INFO:
1439 ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1440 goto bail;
1441 case IB_SMP_ATTR_PKEY_TABLE:
1442 ret = recv_subn_set_pkeytable(smp, ibdev);
1443 goto bail;
1444 case IB_SMP_ATTR_SM_INFO:
1445 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1446 ret = IB_MAD_RESULT_SUCCESS |
1447 IB_MAD_RESULT_CONSUMED;
1448 goto bail;
1449 }
1450 if (dev->port_cap_flags & IB_PORT_SM) {
1451 ret = IB_MAD_RESULT_SUCCESS;
1452 goto bail;
1453 }
1454 /* FALLTHROUGH */
1455 default:
1456 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1457 ret = reply(smp);
1458 goto bail;
1459 }
1460
1461 case IB_MGMT_METHOD_GET_RESP:
1462 /*
1463 * The ib_mad module will call us to process responses
1464 * before checking for other consumers.
1465 * Just tell the caller to process it normally.
1466 */
f9b40353 1467 ret = IB_MAD_RESULT_SUCCESS;
e28c00ad
BS		 1468 goto bail;
1469 default:
1470 smp->status |= IB_SMP_UNSUP_METHOD;
1471 ret = reply(smp);
1472 }
1473
1474bail:
1475 return ret;
1476}
1477
1478static int process_perf(struct ib_device *ibdev, u8 port_num,
1479 struct ib_mad *in_mad,
1480 struct ib_mad *out_mad)
1481{
1482 struct ib_perf *pmp = (struct ib_perf *)out_mad;
1483 int ret;
1484
1485 *out_mad = *in_mad;
1486 if (pmp->class_version != 1) {
1487 pmp->status |= IB_SMP_UNSUP_VERSION;
1488 ret = reply((struct ib_smp *) pmp);
1489 goto bail;
1490 }
1491
1492 switch (pmp->method) {
1493 case IB_MGMT_METHOD_GET:
1494 switch (pmp->attr_id) {
1495 case IB_PMA_CLASS_PORT_INFO:
1496 ret = recv_pma_get_classportinfo(pmp);
1497 goto bail;
1498 case IB_PMA_PORT_SAMPLES_CONTROL:
1499 ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1500 port_num);
1501 goto bail;
1502 case IB_PMA_PORT_SAMPLES_RESULT:
1503 ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1504 goto bail;
1505 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1506 ret = recv_pma_get_portsamplesresult_ext(pmp,
1507 ibdev);
1508 goto bail;
1509 case IB_PMA_PORT_COUNTERS:
1510 ret = recv_pma_get_portcounters(pmp, ibdev,
1511 port_num);
1512 goto bail;
1513 case IB_PMA_PORT_COUNTERS_EXT:
1514 ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1515 port_num);
1516 goto bail;
1517 default:
1518 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1519 ret = reply((struct ib_smp *) pmp);
1520 goto bail;
1521 }
1522
1523 case IB_MGMT_METHOD_SET:
1524 switch (pmp->attr_id) {
1525 case IB_PMA_PORT_SAMPLES_CONTROL:
1526 ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1527 port_num);
1528 goto bail;
1529 case IB_PMA_PORT_COUNTERS:
1530 ret = recv_pma_set_portcounters(pmp, ibdev,
1531 port_num);
1532 goto bail;
1533 case IB_PMA_PORT_COUNTERS_EXT:
1534 ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1535 port_num);
1536 goto bail;
1537 default:
1538 pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1539 ret = reply((struct ib_smp *) pmp);
1540 goto bail;
1541 }
1542
1543 case IB_MGMT_METHOD_GET_RESP:
1544 /*
1545 * The ib_mad module will call us to process responses
1546 * before checking for other consumers.
1547 * Just tell the caller to process it normally.
1548 */
f9b40353 1549 ret = IB_MAD_RESULT_SUCCESS;
e28c00ad
BS		 1550 goto bail;
1551 default:
1552 pmp->status |= IB_SMP_UNSUP_METHOD;
1553 ret = reply((struct ib_smp *) pmp);
1554 }
1555
1556bail:
1557 return ret;
1558}
1559
1560/**
1561 * ipath_process_mad - process an incoming MAD packet
1562 * @ibdev: the infiniband device this packet came in on
1563 * @mad_flags: MAD flags
1564 * @port_num: the port number this packet came in on
1565 * @in_wc: the work completion entry for this packet
1566 * @in_grh: the global route header for this packet
1567 * @in_mad: the incoming MAD
1568 * @out_mad: any outgoing MAD reply
1569 *
1570 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1571 * interested in processing.
1572 *
1573 * Note that the verbs framework has already done the MAD sanity checks,
1574 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1575 * MADs.
1576 *
1577 * This is called by the ib_mad module.
1578 */
1579int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1580 struct ib_wc *in_wc, struct ib_grh *in_grh,
1581 struct ib_mad *in_mad, struct ib_mad *out_mad)
1582{
e28c00ad
BS		 1583 int ret;
1584
e28c00ad
BS		 1585 switch (in_mad->mad_hdr.mgmt_class) {
1586 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1587 case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1588 ret = process_subn(ibdev, mad_flags, port_num,
1589 in_mad, out_mad);
1590 goto bail;
1591 case IB_MGMT_CLASS_PERF_MGMT:
1592 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1593 goto bail;
1594 default:
1595 ret = IB_MAD_RESULT_SUCCESS;
1596 }
1597
1598bail:
1599 return ret;
1600}
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