[PATCH] IB/ipath: report correct device identification information in /sys
[linux-2.6] / drivers / infiniband / hw / ipath / ipath_mad.c
1 /*
2  * Copyright (c) 2006 QLogic, Inc. All rights reserved.
3  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33
34 #include <rdma/ib_smi.h>
35
36 #include "ipath_kernel.h"
37 #include "ipath_verbs.h"
38 #include "ips_common.h"
39
40 #define IB_SMP_UNSUP_VERSION    __constant_htons(0x0004)
41 #define IB_SMP_UNSUP_METHOD     __constant_htons(0x0008)
42 #define IB_SMP_UNSUP_METH_ATTR  __constant_htons(0x000C)
43 #define IB_SMP_INVALID_FIELD    __constant_htons(0x001C)
44
45 static int reply(struct ib_smp *smp)
46 {
47         /*
48          * The verbs framework will handle the directed/LID route
49          * packet changes.
50          */
51         smp->method = IB_MGMT_METHOD_GET_RESP;
52         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
53                 smp->status |= IB_SMP_DIRECTION;
54         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
55 }
56
57 static int recv_subn_get_nodedescription(struct ib_smp *smp,
58                                          struct ib_device *ibdev)
59 {
60         if (smp->attr_mod)
61                 smp->status |= IB_SMP_INVALID_FIELD;
62
63         strncpy(smp->data, ibdev->node_desc, sizeof(smp->data));
64
65         return reply(smp);
66 }
67
68 struct nodeinfo {
69         u8 base_version;
70         u8 class_version;
71         u8 node_type;
72         u8 num_ports;
73         __be64 sys_guid;
74         __be64 node_guid;
75         __be64 port_guid;
76         __be16 partition_cap;
77         __be16 device_id;
78         __be32 revision;
79         u8 local_port_num;
80         u8 vendor_id[3];
81 } __attribute__ ((packed));
82
83 static int recv_subn_get_nodeinfo(struct ib_smp *smp,
84                                   struct ib_device *ibdev, u8 port)
85 {
86         struct nodeinfo *nip = (struct nodeinfo *)&smp->data;
87         struct ipath_devdata *dd = to_idev(ibdev)->dd;
88         u32 vendor, majrev, minrev;
89
90         if (smp->attr_mod)
91                 smp->status |= IB_SMP_INVALID_FIELD;
92
93         nip->base_version = 1;
94         nip->class_version = 1;
95         nip->node_type = 1;     /* channel adapter */
96         /*
97          * XXX The num_ports value will need a layer function to get
98          * the value if we ever have more than one IB port on a chip.
99          * We will also need to get the GUID for the port.
100          */
101         nip->num_ports = ibdev->phys_port_cnt;
102         /* This is already in network order */
103         nip->sys_guid = to_idev(ibdev)->sys_image_guid;
104         nip->node_guid = ipath_layer_get_guid(dd);
105         nip->port_guid = nip->sys_guid;
106         nip->partition_cap = cpu_to_be16(ipath_layer_get_npkeys(dd));
107         nip->device_id = cpu_to_be16(ipath_layer_get_deviceid(dd));
108         majrev = ipath_layer_get_majrev(dd);
109         minrev = ipath_layer_get_minrev(dd);
110         nip->revision = cpu_to_be32((majrev << 16) | minrev);
111         nip->local_port_num = port;
112         vendor = ipath_layer_get_vendorid(dd);
113         nip->vendor_id[0] = 0;
114         nip->vendor_id[1] = vendor >> 8;
115         nip->vendor_id[2] = vendor;
116
117         return reply(smp);
118 }
119
120 static int recv_subn_get_guidinfo(struct ib_smp *smp,
121                                   struct ib_device *ibdev)
122 {
123         u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
124         __be64 *p = (__be64 *) smp->data;
125
126         /* 32 blocks of 8 64-bit GUIDs per block */
127
128         memset(smp->data, 0, sizeof(smp->data));
129
130         /*
131          * We only support one GUID for now.  If this changes, the
132          * portinfo.guid_cap field needs to be updated too.
133          */
134         if (startgx == 0)
135                 /* The first is a copy of the read-only HW GUID. */
136                 *p = ipath_layer_get_guid(to_idev(ibdev)->dd);
137         else
138                 smp->status |= IB_SMP_INVALID_FIELD;
139
140         return reply(smp);
141 }
142
143 static int recv_subn_get_portinfo(struct ib_smp *smp,
144                                   struct ib_device *ibdev, u8 port)
145 {
146         struct ipath_ibdev *dev;
147         struct ib_port_info *pip = (struct ib_port_info *)smp->data;
148         u16 lid;
149         u8 ibcstat;
150         u8 mtu;
151         int ret;
152
153         if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) {
154                 smp->status |= IB_SMP_INVALID_FIELD;
155                 ret = reply(smp);
156                 goto bail;
157         }
158
159         dev = to_idev(ibdev);
160
161         /* Clear all fields.  Only set the non-zero fields. */
162         memset(smp->data, 0, sizeof(smp->data));
163
164         /* Only return the mkey if the protection field allows it. */
165         if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey ||
166             (dev->mkeyprot_resv_lmc >> 6) == 0)
167                 pip->mkey = dev->mkey;
168         pip->gid_prefix = dev->gid_prefix;
169         lid = ipath_layer_get_lid(dev->dd);
170         pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
171         pip->sm_lid = cpu_to_be16(dev->sm_lid);
172         pip->cap_mask = cpu_to_be32(dev->port_cap_flags);
173         /* pip->diag_code; */
174         pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period);
175         pip->local_port_num = port;
176         pip->link_width_enabled = dev->link_width_enabled;
177         pip->link_width_supported = 3;  /* 1x or 4x */
178         pip->link_width_active = 2;     /* 4x */
179         pip->linkspeed_portstate = 0x10;        /* 2.5Gbps */
180         ibcstat = ipath_layer_get_lastibcstat(dev->dd);
181         pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1;
182         pip->portphysstate_linkdown =
183                 (ipath_cvt_physportstate[ibcstat & 0xf] << 4) |
184                 (ipath_layer_get_linkdowndefaultstate(dev->dd) ? 1 : 2);
185         pip->mkeyprot_resv_lmc = dev->mkeyprot_resv_lmc;
186         pip->linkspeedactive_enabled = 0x11;    /* 2.5Gbps, 2.5Gbps */
187         switch (ipath_layer_get_ibmtu(dev->dd)) {
188         case 4096:
189                 mtu = IB_MTU_4096;
190                 break;
191         case 2048:
192                 mtu = IB_MTU_2048;
193                 break;
194         case 1024:
195                 mtu = IB_MTU_1024;
196                 break;
197         case 512:
198                 mtu = IB_MTU_512;
199                 break;
200         case 256:
201                 mtu = IB_MTU_256;
202                 break;
203         default:                /* oops, something is wrong */
204                 mtu = IB_MTU_2048;
205                 break;
206         }
207         pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl;
208         pip->vlcap_inittype = 0x10;     /* VLCap = VL0, InitType = 0 */
209         pip->vl_high_limit = dev->vl_high_limit;
210         /* pip->vl_arb_high_cap; // only one VL */
211         /* pip->vl_arb_low_cap; // only one VL */
212         /* InitTypeReply = 0 */
213         pip->inittypereply_mtucap = IB_MTU_4096;
214         // HCAs ignore VLStallCount and HOQLife
215         /* pip->vlstallcnt_hoqlife; */
216         pip->operationalvl_pei_peo_fpi_fpo = 0x10;      /* OVLs = 1 */
217         pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
218         /* P_KeyViolations are counted by hardware. */
219         pip->pkey_violations =
220                 cpu_to_be16((ipath_layer_get_cr_errpkey(dev->dd) -
221                              dev->z_pkey_violations) & 0xFFFF);
222         pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
223         /* Only the hardware GUID is supported for now */
224         pip->guid_cap = 1;
225         pip->clientrereg_resv_subnetto = dev->subnet_timeout;
226         /* 32.768 usec. response time (guessing) */
227         pip->resv_resptimevalue = 3;
228         pip->localphyerrors_overrunerrors =
229                 (ipath_layer_get_phyerrthreshold(dev->dd) << 4) |
230                 ipath_layer_get_overrunthreshold(dev->dd);
231         /* pip->max_credit_hint; */
232         /* pip->link_roundtrip_latency[3]; */
233
234         ret = reply(smp);
235
236 bail:
237         return ret;
238 }
239
240 static int recv_subn_get_pkeytable(struct ib_smp *smp,
241                                    struct ib_device *ibdev)
242 {
243         u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
244         u16 *p = (u16 *) smp->data;
245         __be16 *q = (__be16 *) smp->data;
246
247         /* 64 blocks of 32 16-bit P_Key entries */
248
249         memset(smp->data, 0, sizeof(smp->data));
250         if (startpx == 0) {
251                 struct ipath_ibdev *dev = to_idev(ibdev);
252                 unsigned i, n = ipath_layer_get_npkeys(dev->dd);
253
254                 ipath_layer_get_pkeys(dev->dd, p);
255
256                 for (i = 0; i < n; i++)
257                         q[i] = cpu_to_be16(p[i]);
258         } else
259                 smp->status |= IB_SMP_INVALID_FIELD;
260
261         return reply(smp);
262 }
263
264 static int recv_subn_set_guidinfo(struct ib_smp *smp,
265                                   struct ib_device *ibdev)
266 {
267         /* The only GUID we support is the first read-only entry. */
268         return recv_subn_get_guidinfo(smp, ibdev);
269 }
270
271 /**
272  * recv_subn_set_portinfo - set port information
273  * @smp: the incoming SM packet
274  * @ibdev: the infiniband device
275  * @port: the port on the device
276  *
277  * Set Portinfo (see ch. 14.2.5.6).
278  */
279 static int recv_subn_set_portinfo(struct ib_smp *smp,
280                                   struct ib_device *ibdev, u8 port)
281 {
282         struct ib_port_info *pip = (struct ib_port_info *)smp->data;
283         struct ib_event event;
284         struct ipath_ibdev *dev;
285         u32 flags;
286         char clientrereg = 0;
287         u16 lid, smlid;
288         u8 lwe;
289         u8 lse;
290         u8 state;
291         u16 lstate;
292         u32 mtu;
293         int ret;
294
295         if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
296                 goto err;
297
298         dev = to_idev(ibdev);
299         event.device = ibdev;
300         event.element.port_num = port;
301
302         dev->mkey = pip->mkey;
303         dev->gid_prefix = pip->gid_prefix;
304         dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
305
306         lid = be16_to_cpu(pip->lid);
307         if (lid != ipath_layer_get_lid(dev->dd)) {
308                 /* Must be a valid unicast LID address. */
309                 if (lid == 0 || lid >= IPS_MULTICAST_LID_BASE)
310                         goto err;
311                 ipath_set_sps_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7);
312                 event.event = IB_EVENT_LID_CHANGE;
313                 ib_dispatch_event(&event);
314         }
315
316         smlid = be16_to_cpu(pip->sm_lid);
317         if (smlid != dev->sm_lid) {
318                 /* Must be a valid unicast LID address. */
319                 if (smlid == 0 || smlid >= IPS_MULTICAST_LID_BASE)
320                         goto err;
321                 dev->sm_lid = smlid;
322                 event.event = IB_EVENT_SM_CHANGE;
323                 ib_dispatch_event(&event);
324         }
325
326         /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
327         lwe = pip->link_width_enabled;
328         if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
329                 goto err;
330         if (lwe == 0xFF)
331                 dev->link_width_enabled = 3;    /* 1x or 4x */
332         else if (lwe)
333                 dev->link_width_enabled = lwe;
334
335         /* Only 2.5 Gbs supported. */
336         lse = pip->linkspeedactive_enabled & 0xF;
337         if (lse >= 2 && lse <= 0xE)
338                 goto err;
339
340         /* Set link down default state. */
341         switch (pip->portphysstate_linkdown & 0xF) {
342         case 0: /* NOP */
343                 break;
344         case 1: /* SLEEP */
345                 if (ipath_layer_set_linkdowndefaultstate(dev->dd, 1))
346                         goto err;
347                 break;
348         case 2: /* POLL */
349                 if (ipath_layer_set_linkdowndefaultstate(dev->dd, 0))
350                         goto err;
351                 break;
352         default:
353                 goto err;
354         }
355
356         dev->mkeyprot_resv_lmc = pip->mkeyprot_resv_lmc;
357         dev->vl_high_limit = pip->vl_high_limit;
358
359         switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
360         case IB_MTU_256:
361                 mtu = 256;
362                 break;
363         case IB_MTU_512:
364                 mtu = 512;
365                 break;
366         case IB_MTU_1024:
367                 mtu = 1024;
368                 break;
369         case IB_MTU_2048:
370                 mtu = 2048;
371                 break;
372         case IB_MTU_4096:
373                 mtu = 4096;
374                 break;
375         default:
376                 /* XXX We have already partially updated our state! */
377                 goto err;
378         }
379         ipath_layer_set_mtu(dev->dd, mtu);
380
381         dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
382
383         /* We only support VL0 */
384         if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
385                 goto err;
386
387         if (pip->mkey_violations == 0)
388                 dev->mkey_violations = 0;
389
390         /*
391          * Hardware counter can't be reset so snapshot and subtract
392          * later.
393          */
394         if (pip->pkey_violations == 0)
395                 dev->z_pkey_violations =
396                         ipath_layer_get_cr_errpkey(dev->dd);
397
398         if (pip->qkey_violations == 0)
399                 dev->qkey_violations = 0;
400
401         if (ipath_layer_set_phyerrthreshold(
402                     dev->dd,
403                     (pip->localphyerrors_overrunerrors >> 4) & 0xF))
404                 goto err;
405
406         if (ipath_layer_set_overrunthreshold(
407                     dev->dd,
408                     (pip->localphyerrors_overrunerrors & 0xF)))
409                 goto err;
410
411         dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
412
413         if (pip->clientrereg_resv_subnetto & 0x80) {
414                 clientrereg = 1;
415                 event.event = IB_EVENT_CLIENT_REREGISTER;
416                 ib_dispatch_event(&event);
417         }
418
419         /*
420          * Do the port state change now that the other link parameters
421          * have been set.
422          * Changing the port physical state only makes sense if the link
423          * is down or is being set to down.
424          */
425         state = pip->linkspeed_portstate & 0xF;
426         flags = ipath_layer_get_flags(dev->dd);
427         lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
428         if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
429                 goto err;
430
431         /*
432          * Only state changes of DOWN, ARM, and ACTIVE are valid
433          * and must be in the correct state to take effect (see 7.2.6).
434          */
435         switch (state) {
436         case IB_PORT_NOP:
437                 if (lstate == 0)
438                         break;
439                 /* FALLTHROUGH */
440         case IB_PORT_DOWN:
441                 if (lstate == 0)
442                         if (ipath_layer_get_linkdowndefaultstate(dev->dd))
443                                 lstate = IPATH_IB_LINKDOWN_SLEEP;
444                         else
445                                 lstate = IPATH_IB_LINKDOWN;
446                 else if (lstate == 1)
447                         lstate = IPATH_IB_LINKDOWN_SLEEP;
448                 else if (lstate == 2)
449                         lstate = IPATH_IB_LINKDOWN;
450                 else if (lstate == 3)
451                         lstate = IPATH_IB_LINKDOWN_DISABLE;
452                 else
453                         goto err;
454                 ipath_layer_set_linkstate(dev->dd, lstate);
455                 if (flags & IPATH_LINKACTIVE) {
456                         event.event = IB_EVENT_PORT_ERR;
457                         ib_dispatch_event(&event);
458                 }
459                 break;
460         case IB_PORT_ARMED:
461                 if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE)))
462                         break;
463                 ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKARM);
464                 if (flags & IPATH_LINKACTIVE) {
465                         event.event = IB_EVENT_PORT_ERR;
466                         ib_dispatch_event(&event);
467                 }
468                 break;
469         case IB_PORT_ACTIVE:
470                 if (!(flags & IPATH_LINKARMED))
471                         break;
472                 ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
473                 event.event = IB_EVENT_PORT_ACTIVE;
474                 ib_dispatch_event(&event);
475                 break;
476         default:
477                 /* XXX We have already partially updated our state! */
478                 goto err;
479         }
480
481         ret = recv_subn_get_portinfo(smp, ibdev, port);
482
483         if (clientrereg)
484                 pip->clientrereg_resv_subnetto |= 0x80;
485
486         goto done;
487
488 err:
489         smp->status |= IB_SMP_INVALID_FIELD;
490         ret = recv_subn_get_portinfo(smp, ibdev, port);
491
492 done:
493         return ret;
494 }
495
496 static int recv_subn_set_pkeytable(struct ib_smp *smp,
497                                    struct ib_device *ibdev)
498 {
499         u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
500         __be16 *p = (__be16 *) smp->data;
501         u16 *q = (u16 *) smp->data;
502         struct ipath_ibdev *dev = to_idev(ibdev);
503         unsigned i, n = ipath_layer_get_npkeys(dev->dd);
504
505         for (i = 0; i < n; i++)
506                 q[i] = be16_to_cpu(p[i]);
507
508         if (startpx != 0 ||
509             ipath_layer_set_pkeys(dev->dd, q) != 0)
510                 smp->status |= IB_SMP_INVALID_FIELD;
511
512         return recv_subn_get_pkeytable(smp, ibdev);
513 }
514
515 #define IB_PMA_CLASS_PORT_INFO          __constant_htons(0x0001)
516 #define IB_PMA_PORT_SAMPLES_CONTROL     __constant_htons(0x0010)
517 #define IB_PMA_PORT_SAMPLES_RESULT      __constant_htons(0x0011)
518 #define IB_PMA_PORT_COUNTERS            __constant_htons(0x0012)
519 #define IB_PMA_PORT_COUNTERS_EXT        __constant_htons(0x001D)
520 #define IB_PMA_PORT_SAMPLES_RESULT_EXT  __constant_htons(0x001E)
521
522 struct ib_perf {
523         u8 base_version;
524         u8 mgmt_class;
525         u8 class_version;
526         u8 method;
527         __be16 status;
528         __be16 unused;
529         __be64 tid;
530         __be16 attr_id;
531         __be16 resv;
532         __be32 attr_mod;
533         u8 reserved[40];
534         u8 data[192];
535 } __attribute__ ((packed));
536
537 struct ib_pma_classportinfo {
538         u8 base_version;
539         u8 class_version;
540         __be16 cap_mask;
541         u8 reserved[3];
542         u8 resp_time_value;     /* only lower 5 bits */
543         union ib_gid redirect_gid;
544         __be32 redirect_tc_sl_fl;       /* 8, 4, 20 bits respectively */
545         __be16 redirect_lid;
546         __be16 redirect_pkey;
547         __be32 redirect_qp;     /* only lower 24 bits */
548         __be32 redirect_qkey;
549         union ib_gid trap_gid;
550         __be32 trap_tc_sl_fl;   /* 8, 4, 20 bits respectively */
551         __be16 trap_lid;
552         __be16 trap_pkey;
553         __be32 trap_hl_qp;      /* 8, 24 bits respectively */
554         __be32 trap_qkey;
555 } __attribute__ ((packed));
556
557 struct ib_pma_portsamplescontrol {
558         u8 opcode;
559         u8 port_select;
560         u8 tick;
561         u8 counter_width;       /* only lower 3 bits */
562         __be32 counter_mask0_9; /* 2, 10 * 3, bits */
563         __be16 counter_mask10_14;       /* 1, 5 * 3, bits */
564         u8 sample_mechanisms;
565         u8 sample_status;       /* only lower 2 bits */
566         __be64 option_mask;
567         __be64 vendor_mask;
568         __be32 sample_start;
569         __be32 sample_interval;
570         __be16 tag;
571         __be16 counter_select[15];
572 } __attribute__ ((packed));
573
574 struct ib_pma_portsamplesresult {
575         __be16 tag;
576         __be16 sample_status;   /* only lower 2 bits */
577         __be32 counter[15];
578 } __attribute__ ((packed));
579
580 struct ib_pma_portsamplesresult_ext {
581         __be16 tag;
582         __be16 sample_status;   /* only lower 2 bits */
583         __be32 extended_width;  /* only upper 2 bits */
584         __be64 counter[15];
585 } __attribute__ ((packed));
586
587 struct ib_pma_portcounters {
588         u8 reserved;
589         u8 port_select;
590         __be16 counter_select;
591         __be16 symbol_error_counter;
592         u8 link_error_recovery_counter;
593         u8 link_downed_counter;
594         __be16 port_rcv_errors;
595         __be16 port_rcv_remphys_errors;
596         __be16 port_rcv_switch_relay_errors;
597         __be16 port_xmit_discards;
598         u8 port_xmit_constraint_errors;
599         u8 port_rcv_constraint_errors;
600         u8 reserved1;
601         u8 lli_ebor_errors;     /* 4, 4, bits */
602         __be16 reserved2;
603         __be16 vl15_dropped;
604         __be32 port_xmit_data;
605         __be32 port_rcv_data;
606         __be32 port_xmit_packets;
607         __be32 port_rcv_packets;
608 } __attribute__ ((packed));
609
610 #define IB_PMA_SEL_SYMBOL_ERROR                 __constant_htons(0x0001)
611 #define IB_PMA_SEL_LINK_ERROR_RECOVERY          __constant_htons(0x0002)
612 #define IB_PMA_SEL_LINK_DOWNED                  __constant_htons(0x0004)
613 #define IB_PMA_SEL_PORT_RCV_ERRORS              __constant_htons(0x0008)
614 #define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS      __constant_htons(0x0010)
615 #define IB_PMA_SEL_PORT_XMIT_DISCARDS           __constant_htons(0x0040)
616 #define IB_PMA_SEL_PORT_XMIT_DATA               __constant_htons(0x1000)
617 #define IB_PMA_SEL_PORT_RCV_DATA                __constant_htons(0x2000)
618 #define IB_PMA_SEL_PORT_XMIT_PACKETS            __constant_htons(0x4000)
619 #define IB_PMA_SEL_PORT_RCV_PACKETS             __constant_htons(0x8000)
620
621 struct ib_pma_portcounters_ext {
622         u8 reserved;
623         u8 port_select;
624         __be16 counter_select;
625         __be32 reserved1;
626         __be64 port_xmit_data;
627         __be64 port_rcv_data;
628         __be64 port_xmit_packets;
629         __be64 port_rcv_packets;
630         __be64 port_unicast_xmit_packets;
631         __be64 port_unicast_rcv_packets;
632         __be64 port_multicast_xmit_packets;
633         __be64 port_multicast_rcv_packets;
634 } __attribute__ ((packed));
635
636 #define IB_PMA_SELX_PORT_XMIT_DATA              __constant_htons(0x0001)
637 #define IB_PMA_SELX_PORT_RCV_DATA               __constant_htons(0x0002)
638 #define IB_PMA_SELX_PORT_XMIT_PACKETS           __constant_htons(0x0004)
639 #define IB_PMA_SELX_PORT_RCV_PACKETS            __constant_htons(0x0008)
640 #define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS       __constant_htons(0x0010)
641 #define IB_PMA_SELX_PORT_UNI_RCV_PACKETS        __constant_htons(0x0020)
642 #define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS     __constant_htons(0x0040)
643 #define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS      __constant_htons(0x0080)
644
645 static int recv_pma_get_classportinfo(struct ib_perf *pmp)
646 {
647         struct ib_pma_classportinfo *p =
648                 (struct ib_pma_classportinfo *)pmp->data;
649
650         memset(pmp->data, 0, sizeof(pmp->data));
651
652         if (pmp->attr_mod != 0)
653                 pmp->status |= IB_SMP_INVALID_FIELD;
654
655         /* Indicate AllPortSelect is valid (only one port anyway) */
656         p->cap_mask = __constant_cpu_to_be16(1 << 8);
657         p->base_version = 1;
658         p->class_version = 1;
659         /*
660          * Expected response time is 4.096 usec. * 2^18 == 1.073741824
661          * sec.
662          */
663         p->resp_time_value = 18;
664
665         return reply((struct ib_smp *) pmp);
666 }
667
668 /*
669  * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
670  * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
671  * We support 5 counters which only count the mandatory quantities.
672  */
673 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
674 #define COUNTER_MASK0_9 \
675         __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
676                                COUNTER_MASK(1, 1) | \
677                                COUNTER_MASK(1, 2) | \
678                                COUNTER_MASK(1, 3) | \
679                                COUNTER_MASK(1, 4))
680
681 static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
682                                            struct ib_device *ibdev, u8 port)
683 {
684         struct ib_pma_portsamplescontrol *p =
685                 (struct ib_pma_portsamplescontrol *)pmp->data;
686         struct ipath_ibdev *dev = to_idev(ibdev);
687         unsigned long flags;
688         u8 port_select = p->port_select;
689
690         memset(pmp->data, 0, sizeof(pmp->data));
691
692         p->port_select = port_select;
693         if (pmp->attr_mod != 0 ||
694             (port_select != port && port_select != 0xFF))
695                 pmp->status |= IB_SMP_INVALID_FIELD;
696         /*
697          * Ticks are 10x the link transfer period which for 2.5Gbs is 4
698          * nsec.  0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec.  Sample
699          * intervals are counted in ticks.  Since we use Linux timers, that
700          * count in jiffies, we can't sample for less than 1000 ticks if HZ
701          * == 1000 (4000 ticks if HZ is 250).
702          */
703         /* XXX This is WRONG. */
704         p->tick = 250;          /* 1 usec. */
705         p->counter_width = 4;   /* 32 bit counters */
706         p->counter_mask0_9 = COUNTER_MASK0_9;
707         spin_lock_irqsave(&dev->pending_lock, flags);
708         p->sample_status = dev->pma_sample_status;
709         p->sample_start = cpu_to_be32(dev->pma_sample_start);
710         p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
711         p->tag = cpu_to_be16(dev->pma_tag);
712         p->counter_select[0] = dev->pma_counter_select[0];
713         p->counter_select[1] = dev->pma_counter_select[1];
714         p->counter_select[2] = dev->pma_counter_select[2];
715         p->counter_select[3] = dev->pma_counter_select[3];
716         p->counter_select[4] = dev->pma_counter_select[4];
717         spin_unlock_irqrestore(&dev->pending_lock, flags);
718
719         return reply((struct ib_smp *) pmp);
720 }
721
722 static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
723                                            struct ib_device *ibdev, u8 port)
724 {
725         struct ib_pma_portsamplescontrol *p =
726                 (struct ib_pma_portsamplescontrol *)pmp->data;
727         struct ipath_ibdev *dev = to_idev(ibdev);
728         unsigned long flags;
729         u32 start;
730         int ret;
731
732         if (pmp->attr_mod != 0 ||
733             (p->port_select != port && p->port_select != 0xFF)) {
734                 pmp->status |= IB_SMP_INVALID_FIELD;
735                 ret = reply((struct ib_smp *) pmp);
736                 goto bail;
737         }
738
739         start = be32_to_cpu(p->sample_start);
740         if (start != 0) {
741                 spin_lock_irqsave(&dev->pending_lock, flags);
742                 if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) {
743                         dev->pma_sample_status =
744                                 IB_PMA_SAMPLE_STATUS_STARTED;
745                         dev->pma_sample_start = start;
746                         dev->pma_sample_interval =
747                                 be32_to_cpu(p->sample_interval);
748                         dev->pma_tag = be16_to_cpu(p->tag);
749                         if (p->counter_select[0])
750                                 dev->pma_counter_select[0] =
751                                         p->counter_select[0];
752                         if (p->counter_select[1])
753                                 dev->pma_counter_select[1] =
754                                         p->counter_select[1];
755                         if (p->counter_select[2])
756                                 dev->pma_counter_select[2] =
757                                         p->counter_select[2];
758                         if (p->counter_select[3])
759                                 dev->pma_counter_select[3] =
760                                         p->counter_select[3];
761                         if (p->counter_select[4])
762                                 dev->pma_counter_select[4] =
763                                         p->counter_select[4];
764                 }
765                 spin_unlock_irqrestore(&dev->pending_lock, flags);
766         }
767         ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
768
769 bail:
770         return ret;
771 }
772
773 static u64 get_counter(struct ipath_ibdev *dev, __be16 sel)
774 {
775         u64 ret;
776
777         switch (sel) {
778         case IB_PMA_PORT_XMIT_DATA:
779                 ret = dev->ipath_sword;
780                 break;
781         case IB_PMA_PORT_RCV_DATA:
782                 ret = dev->ipath_rword;
783                 break;
784         case IB_PMA_PORT_XMIT_PKTS:
785                 ret = dev->ipath_spkts;
786                 break;
787         case IB_PMA_PORT_RCV_PKTS:
788                 ret = dev->ipath_rpkts;
789                 break;
790         case IB_PMA_PORT_XMIT_WAIT:
791                 ret = dev->ipath_xmit_wait;
792                 break;
793         default:
794                 ret = 0;
795         }
796
797         return ret;
798 }
799
800 static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
801                                           struct ib_device *ibdev)
802 {
803         struct ib_pma_portsamplesresult *p =
804                 (struct ib_pma_portsamplesresult *)pmp->data;
805         struct ipath_ibdev *dev = to_idev(ibdev);
806         int i;
807
808         memset(pmp->data, 0, sizeof(pmp->data));
809         p->tag = cpu_to_be16(dev->pma_tag);
810         p->sample_status = cpu_to_be16(dev->pma_sample_status);
811         for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
812                 p->counter[i] = cpu_to_be32(
813                         get_counter(dev, dev->pma_counter_select[i]));
814
815         return reply((struct ib_smp *) pmp);
816 }
817
818 static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
819                                               struct ib_device *ibdev)
820 {
821         struct ib_pma_portsamplesresult_ext *p =
822                 (struct ib_pma_portsamplesresult_ext *)pmp->data;
823         struct ipath_ibdev *dev = to_idev(ibdev);
824         int i;
825
826         memset(pmp->data, 0, sizeof(pmp->data));
827         p->tag = cpu_to_be16(dev->pma_tag);
828         p->sample_status = cpu_to_be16(dev->pma_sample_status);
829         /* 64 bits */
830         p->extended_width = __constant_cpu_to_be32(0x80000000);
831         for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
832                 p->counter[i] = cpu_to_be64(
833                         get_counter(dev, dev->pma_counter_select[i]));
834
835         return reply((struct ib_smp *) pmp);
836 }
837
838 static int recv_pma_get_portcounters(struct ib_perf *pmp,
839                                      struct ib_device *ibdev, u8 port)
840 {
841         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
842                 pmp->data;
843         struct ipath_ibdev *dev = to_idev(ibdev);
844         struct ipath_layer_counters cntrs;
845         u8 port_select = p->port_select;
846
847         ipath_layer_get_counters(dev->dd, &cntrs);
848
849         /* Adjust counters for any resets done. */
850         cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
851         cntrs.link_error_recovery_counter -=
852                 dev->z_link_error_recovery_counter;
853         cntrs.link_downed_counter -= dev->z_link_downed_counter;
854         cntrs.port_rcv_errors += dev->rcv_errors;
855         cntrs.port_rcv_errors -= dev->z_port_rcv_errors;
856         cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors;
857         cntrs.port_xmit_discards -= dev->z_port_xmit_discards;
858         cntrs.port_xmit_data -= dev->z_port_xmit_data;
859         cntrs.port_rcv_data -= dev->z_port_rcv_data;
860         cntrs.port_xmit_packets -= dev->z_port_xmit_packets;
861         cntrs.port_rcv_packets -= dev->z_port_rcv_packets;
862
863         memset(pmp->data, 0, sizeof(pmp->data));
864
865         p->port_select = port_select;
866         if (pmp->attr_mod != 0 ||
867             (port_select != port && port_select != 0xFF))
868                 pmp->status |= IB_SMP_INVALID_FIELD;
869
870         if (cntrs.symbol_error_counter > 0xFFFFUL)
871                 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
872         else
873                 p->symbol_error_counter =
874                         cpu_to_be16((u16)cntrs.symbol_error_counter);
875         if (cntrs.link_error_recovery_counter > 0xFFUL)
876                 p->link_error_recovery_counter = 0xFF;
877         else
878                 p->link_error_recovery_counter =
879                         (u8)cntrs.link_error_recovery_counter;
880         if (cntrs.link_downed_counter > 0xFFUL)
881                 p->link_downed_counter = 0xFF;
882         else
883                 p->link_downed_counter = (u8)cntrs.link_downed_counter;
884         if (cntrs.port_rcv_errors > 0xFFFFUL)
885                 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
886         else
887                 p->port_rcv_errors =
888                         cpu_to_be16((u16) cntrs.port_rcv_errors);
889         if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
890                 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
891         else
892                 p->port_rcv_remphys_errors =
893                         cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
894         if (cntrs.port_xmit_discards > 0xFFFFUL)
895                 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
896         else
897                 p->port_xmit_discards =
898                         cpu_to_be16((u16)cntrs.port_xmit_discards);
899         if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
900                 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
901         else
902                 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
903         if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
904                 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
905         else
906                 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
907         if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
908                 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
909         else
910                 p->port_xmit_packets =
911                         cpu_to_be32((u32)cntrs.port_xmit_packets);
912         if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
913                 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
914         else
915                 p->port_rcv_packets =
916                         cpu_to_be32((u32) cntrs.port_rcv_packets);
917
918         return reply((struct ib_smp *) pmp);
919 }
920
921 static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
922                                          struct ib_device *ibdev, u8 port)
923 {
924         struct ib_pma_portcounters_ext *p =
925                 (struct ib_pma_portcounters_ext *)pmp->data;
926         struct ipath_ibdev *dev = to_idev(ibdev);
927         u64 swords, rwords, spkts, rpkts, xwait;
928         u8 port_select = p->port_select;
929
930         ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
931                                       &rpkts, &xwait);
932
933         /* Adjust counters for any resets done. */
934         swords -= dev->z_port_xmit_data;
935         rwords -= dev->z_port_rcv_data;
936         spkts -= dev->z_port_xmit_packets;
937         rpkts -= dev->z_port_rcv_packets;
938
939         memset(pmp->data, 0, sizeof(pmp->data));
940
941         p->port_select = port_select;
942         if (pmp->attr_mod != 0 ||
943             (port_select != port && port_select != 0xFF))
944                 pmp->status |= IB_SMP_INVALID_FIELD;
945
946         p->port_xmit_data = cpu_to_be64(swords);
947         p->port_rcv_data = cpu_to_be64(rwords);
948         p->port_xmit_packets = cpu_to_be64(spkts);
949         p->port_rcv_packets = cpu_to_be64(rpkts);
950         p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
951         p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
952         p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
953         p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
954
955         return reply((struct ib_smp *) pmp);
956 }
957
958 static int recv_pma_set_portcounters(struct ib_perf *pmp,
959                                      struct ib_device *ibdev, u8 port)
960 {
961         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
962                 pmp->data;
963         struct ipath_ibdev *dev = to_idev(ibdev);
964         struct ipath_layer_counters cntrs;
965
966         /*
967          * Since the HW doesn't support clearing counters, we save the
968          * current count and subtract it from future responses.
969          */
970         ipath_layer_get_counters(dev->dd, &cntrs);
971
972         if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
973                 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
974
975         if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
976                 dev->z_link_error_recovery_counter =
977                         cntrs.link_error_recovery_counter;
978
979         if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
980                 dev->z_link_downed_counter = cntrs.link_downed_counter;
981
982         if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
983                 dev->z_port_rcv_errors =
984                         cntrs.port_rcv_errors + dev->rcv_errors;
985
986         if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
987                 dev->z_port_rcv_remphys_errors =
988                         cntrs.port_rcv_remphys_errors;
989
990         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
991                 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
992
993         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
994                 dev->z_port_xmit_data = cntrs.port_xmit_data;
995
996         if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
997                 dev->z_port_rcv_data = cntrs.port_rcv_data;
998
999         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1000                 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
1001
1002         if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1003                 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
1004
1005         return recv_pma_get_portcounters(pmp, ibdev, port);
1006 }
1007
1008 static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1009                                          struct ib_device *ibdev, u8 port)
1010 {
1011         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1012                 pmp->data;
1013         struct ipath_ibdev *dev = to_idev(ibdev);
1014         u64 swords, rwords, spkts, rpkts, xwait;
1015
1016         ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1017                                       &rpkts, &xwait);
1018
1019         if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1020                 dev->z_port_xmit_data = swords;
1021
1022         if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1023                 dev->z_port_rcv_data = rwords;
1024
1025         if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1026                 dev->z_port_xmit_packets = spkts;
1027
1028         if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1029                 dev->z_port_rcv_packets = rpkts;
1030
1031         if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1032                 dev->n_unicast_xmit = 0;
1033
1034         if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1035                 dev->n_unicast_rcv = 0;
1036
1037         if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1038                 dev->n_multicast_xmit = 0;
1039
1040         if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1041                 dev->n_multicast_rcv = 0;
1042
1043         return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1044 }
1045
1046 static int process_subn(struct ib_device *ibdev, int mad_flags,
1047                         u8 port_num, struct ib_mad *in_mad,
1048                         struct ib_mad *out_mad)
1049 {
1050         struct ib_smp *smp = (struct ib_smp *)out_mad;
1051         struct ipath_ibdev *dev = to_idev(ibdev);
1052         int ret;
1053
1054         *out_mad = *in_mad;
1055         if (smp->class_version != 1) {
1056                 smp->status |= IB_SMP_UNSUP_VERSION;
1057                 ret = reply(smp);
1058                 goto bail;
1059         }
1060
1061         /* Is the mkey in the process of expiring? */
1062         if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1063                 /* Clear timeout and mkey protection field. */
1064                 dev->mkey_lease_timeout = 0;
1065                 dev->mkeyprot_resv_lmc &= 0x3F;
1066         }
1067
1068         /*
1069          * M_Key checking depends on
1070          * Portinfo:M_Key_protect_bits
1071          */
1072         if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1073             dev->mkey != smp->mkey &&
1074             (smp->method == IB_MGMT_METHOD_SET ||
1075              (smp->method == IB_MGMT_METHOD_GET &&
1076               (dev->mkeyprot_resv_lmc >> 7) != 0))) {
1077                 if (dev->mkey_violations != 0xFFFF)
1078                         ++dev->mkey_violations;
1079                 if (dev->mkey_lease_timeout ||
1080                     dev->mkey_lease_period == 0) {
1081                         ret = IB_MAD_RESULT_SUCCESS |
1082                                 IB_MAD_RESULT_CONSUMED;
1083                         goto bail;
1084                 }
1085                 dev->mkey_lease_timeout = jiffies +
1086                         dev->mkey_lease_period * HZ;
1087                 /* Future: Generate a trap notice. */
1088                 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1089                 goto bail;
1090         } else if (dev->mkey_lease_timeout)
1091                 dev->mkey_lease_timeout = 0;
1092
1093         switch (smp->method) {
1094         case IB_MGMT_METHOD_GET:
1095                 switch (smp->attr_id) {
1096                 case IB_SMP_ATTR_NODE_DESC:
1097                         ret = recv_subn_get_nodedescription(smp, ibdev);
1098                         goto bail;
1099                 case IB_SMP_ATTR_NODE_INFO:
1100                         ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1101                         goto bail;
1102                 case IB_SMP_ATTR_GUID_INFO:
1103                         ret = recv_subn_get_guidinfo(smp, ibdev);
1104                         goto bail;
1105                 case IB_SMP_ATTR_PORT_INFO:
1106                         ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1107                         goto bail;
1108                 case IB_SMP_ATTR_PKEY_TABLE:
1109                         ret = recv_subn_get_pkeytable(smp, ibdev);
1110                         goto bail;
1111                 case IB_SMP_ATTR_SM_INFO:
1112                         if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1113                                 ret = IB_MAD_RESULT_SUCCESS |
1114                                         IB_MAD_RESULT_CONSUMED;
1115                                 goto bail;
1116                         }
1117                         if (dev->port_cap_flags & IB_PORT_SM) {
1118                                 ret = IB_MAD_RESULT_SUCCESS;
1119                                 goto bail;
1120                         }
1121                         /* FALLTHROUGH */
1122                 default:
1123                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
1124                         ret = reply(smp);
1125                         goto bail;
1126                 }
1127
1128         case IB_MGMT_METHOD_SET:
1129                 switch (smp->attr_id) {
1130                 case IB_SMP_ATTR_GUID_INFO:
1131                         ret = recv_subn_set_guidinfo(smp, ibdev);
1132                         goto bail;
1133                 case IB_SMP_ATTR_PORT_INFO:
1134                         ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1135                         goto bail;
1136                 case IB_SMP_ATTR_PKEY_TABLE:
1137                         ret = recv_subn_set_pkeytable(smp, ibdev);
1138                         goto bail;
1139                 case IB_SMP_ATTR_SM_INFO:
1140                         if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1141                                 ret = IB_MAD_RESULT_SUCCESS |
1142                                         IB_MAD_RESULT_CONSUMED;
1143                                 goto bail;
1144                         }
1145                         if (dev->port_cap_flags & IB_PORT_SM) {
1146                                 ret = IB_MAD_RESULT_SUCCESS;
1147                                 goto bail;
1148                         }
1149                         /* FALLTHROUGH */
1150                 default:
1151                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
1152                         ret = reply(smp);
1153                         goto bail;
1154                 }
1155
1156         case IB_MGMT_METHOD_GET_RESP:
1157                 /*
1158                  * The ib_mad module will call us to process responses
1159                  * before checking for other consumers.
1160                  * Just tell the caller to process it normally.
1161                  */
1162                 ret = IB_MAD_RESULT_FAILURE;
1163                 goto bail;
1164         default:
1165                 smp->status |= IB_SMP_UNSUP_METHOD;
1166                 ret = reply(smp);
1167         }
1168
1169 bail:
1170         return ret;
1171 }
1172
1173 static int process_perf(struct ib_device *ibdev, u8 port_num,
1174                         struct ib_mad *in_mad,
1175                         struct ib_mad *out_mad)
1176 {
1177         struct ib_perf *pmp = (struct ib_perf *)out_mad;
1178         int ret;
1179
1180         *out_mad = *in_mad;
1181         if (pmp->class_version != 1) {
1182                 pmp->status |= IB_SMP_UNSUP_VERSION;
1183                 ret = reply((struct ib_smp *) pmp);
1184                 goto bail;
1185         }
1186
1187         switch (pmp->method) {
1188         case IB_MGMT_METHOD_GET:
1189                 switch (pmp->attr_id) {
1190                 case IB_PMA_CLASS_PORT_INFO:
1191                         ret = recv_pma_get_classportinfo(pmp);
1192                         goto bail;
1193                 case IB_PMA_PORT_SAMPLES_CONTROL:
1194                         ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1195                                                               port_num);
1196                         goto bail;
1197                 case IB_PMA_PORT_SAMPLES_RESULT:
1198                         ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1199                         goto bail;
1200                 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1201                         ret = recv_pma_get_portsamplesresult_ext(pmp,
1202                                                                  ibdev);
1203                         goto bail;
1204                 case IB_PMA_PORT_COUNTERS:
1205                         ret = recv_pma_get_portcounters(pmp, ibdev,
1206                                                         port_num);
1207                         goto bail;
1208                 case IB_PMA_PORT_COUNTERS_EXT:
1209                         ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1210                                                             port_num);
1211                         goto bail;
1212                 default:
1213                         pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1214                         ret = reply((struct ib_smp *) pmp);
1215                         goto bail;
1216                 }
1217
1218         case IB_MGMT_METHOD_SET:
1219                 switch (pmp->attr_id) {
1220                 case IB_PMA_PORT_SAMPLES_CONTROL:
1221                         ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1222                                                               port_num);
1223                         goto bail;
1224                 case IB_PMA_PORT_COUNTERS:
1225                         ret = recv_pma_set_portcounters(pmp, ibdev,
1226                                                         port_num);
1227                         goto bail;
1228                 case IB_PMA_PORT_COUNTERS_EXT:
1229                         ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1230                                                             port_num);
1231                         goto bail;
1232                 default:
1233                         pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1234                         ret = reply((struct ib_smp *) pmp);
1235                         goto bail;
1236                 }
1237
1238         case IB_MGMT_METHOD_GET_RESP:
1239                 /*
1240                  * The ib_mad module will call us to process responses
1241                  * before checking for other consumers.
1242                  * Just tell the caller to process it normally.
1243                  */
1244                 ret = IB_MAD_RESULT_FAILURE;
1245                 goto bail;
1246         default:
1247                 pmp->status |= IB_SMP_UNSUP_METHOD;
1248                 ret = reply((struct ib_smp *) pmp);
1249         }
1250
1251 bail:
1252         return ret;
1253 }
1254
1255 /**
1256  * ipath_process_mad - process an incoming MAD packet
1257  * @ibdev: the infiniband device this packet came in on
1258  * @mad_flags: MAD flags
1259  * @port_num: the port number this packet came in on
1260  * @in_wc: the work completion entry for this packet
1261  * @in_grh: the global route header for this packet
1262  * @in_mad: the incoming MAD
1263  * @out_mad: any outgoing MAD reply
1264  *
1265  * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1266  * interested in processing.
1267  *
1268  * Note that the verbs framework has already done the MAD sanity checks,
1269  * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1270  * MADs.
1271  *
1272  * This is called by the ib_mad module.
1273  */
1274 int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1275                       struct ib_wc *in_wc, struct ib_grh *in_grh,
1276                       struct ib_mad *in_mad, struct ib_mad *out_mad)
1277 {
1278         struct ipath_ibdev *dev = to_idev(ibdev);
1279         int ret;
1280
1281         /*
1282          * Snapshot current HW counters to "clear" them.
1283          * This should be done when the driver is loaded except that for
1284          * some reason we get a zillion errors when brining up the link.
1285          */
1286         if (dev->rcv_errors == 0) {
1287                 struct ipath_layer_counters cntrs;
1288
1289                 ipath_layer_get_counters(to_idev(ibdev)->dd, &cntrs);
1290                 dev->rcv_errors++;
1291                 dev->z_symbol_error_counter = cntrs.symbol_error_counter;
1292                 dev->z_link_error_recovery_counter =
1293                         cntrs.link_error_recovery_counter;
1294                 dev->z_link_downed_counter = cntrs.link_downed_counter;
1295                 dev->z_port_rcv_errors = cntrs.port_rcv_errors + 1;
1296                 dev->z_port_rcv_remphys_errors =
1297                         cntrs.port_rcv_remphys_errors;
1298                 dev->z_port_xmit_discards = cntrs.port_xmit_discards;
1299                 dev->z_port_xmit_data = cntrs.port_xmit_data;
1300                 dev->z_port_rcv_data = cntrs.port_rcv_data;
1301                 dev->z_port_xmit_packets = cntrs.port_xmit_packets;
1302                 dev->z_port_rcv_packets = cntrs.port_rcv_packets;
1303         }
1304         switch (in_mad->mad_hdr.mgmt_class) {
1305         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1306         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1307                 ret = process_subn(ibdev, mad_flags, port_num,
1308                                    in_mad, out_mad);
1309                 goto bail;
1310         case IB_MGMT_CLASS_PERF_MGMT:
1311                 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1312                 goto bail;
1313         default:
1314                 ret = IB_MAD_RESULT_SUCCESS;
1315         }
1316
1317 bail:
1318         return ret;
1319 }