drivers/infiniband/hw/ipath/ipath_mad.c

   1 /*
   2  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <rdma/ib_smi.h>
  34
  35 #include "ipath_kernel.h"
  36 #include "ipath_verbs.h"
  37 #include "ips_common.h"
  38
  39 #define IB_SMP_UNSUP_VERSION    __constant_htons(0x0004)
  40 #define IB_SMP_UNSUP_METHOD     __constant_htons(0x0008)
  41 #define IB_SMP_UNSUP_METH_ATTR  __constant_htons(0x000C)
  42 #define IB_SMP_INVALID_FIELD    __constant_htons(0x001C)
  43
  44 static int reply(struct ib_smp *smp)
  45 {
  46         /*
  47          * The verbs framework will handle the directed/LID route
  48          * packet changes.
  49          */
  50         smp->method = IB_MGMT_METHOD_GET_RESP;
  51         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
  52                 smp->status |= IB_SMP_DIRECTION;
  53         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
  54 }
  55
  56 static int recv_subn_get_nodedescription(struct ib_smp *smp,
  57                                          struct ib_device *ibdev)
  58 {
  59         if (smp->attr_mod)
  60                 smp->status |= IB_SMP_INVALID_FIELD;
  61
  62         strncpy(smp->data, ibdev->node_desc, sizeof(smp->data));
  63
  64         return reply(smp);
  65 }
  66
  67 struct nodeinfo {
  68         u8 base_version;
  69         u8 class_version;
  70         u8 node_type;
  71         u8 num_ports;
  72         __be64 sys_guid;
  73         __be64 node_guid;
  74         __be64 port_guid;
  75         __be16 partition_cap;
  76         __be16 device_id;
  77         __be32 revision;
  78         u8 local_port_num;
  79         u8 vendor_id[3];
  80 } __attribute__ ((packed));
  81
  82 static int recv_subn_get_nodeinfo(struct ib_smp *smp,
  83                                   struct ib_device *ibdev, u8 port)
  84 {
  85         struct nodeinfo *nip = (struct nodeinfo *)&smp->data;
  86         struct ipath_devdata *dd = to_idev(ibdev)->dd;
  87         u32 vendor, boardid, majrev, minrev;
  88
  89         if (smp->attr_mod)
  90                 smp->status |= IB_SMP_INVALID_FIELD;
  91
  92         nip->base_version = 1;
  93         nip->class_version = 1;
  94         nip->node_type = 1;     /* channel adapter */
  95         /*
  96          * XXX The num_ports value will need a layer function to get
  97          * the value if we ever have more than one IB port on a chip.
  98          * We will also need to get the GUID for the port.
  99          */
 100         nip->num_ports = ibdev->phys_port_cnt;
 101         /* This is already in network order */
 102         nip->sys_guid = to_idev(ibdev)->sys_image_guid;
 103         nip->node_guid = ipath_layer_get_guid(dd);
 104         nip->port_guid = nip->sys_guid;
 105         nip->partition_cap = cpu_to_be16(ipath_layer_get_npkeys(dd));
 106         nip->device_id = cpu_to_be16(ipath_layer_get_deviceid(dd));
 107         ipath_layer_query_device(dd, &vendor, &boardid, &majrev, &minrev);
 108         nip->revision = cpu_to_be32((majrev << 16) | minrev);
 109         nip->local_port_num = port;
 110         nip->vendor_id[0] = 0;
 111         nip->vendor_id[1] = vendor >> 8;
 112         nip->vendor_id[2] = vendor;
 113
 114         return reply(smp);
 115 }
 116
 117 static int recv_subn_get_guidinfo(struct ib_smp *smp,
 118                                   struct ib_device *ibdev)
 119 {
 120         u32 startgx = 8 * be32_to_cpu(smp->attr_mod);
 121         __be64 *p = (__be64 *) smp->data;
 122
 123         /* 32 blocks of 8 64-bit GUIDs per block */
 124
 125         memset(smp->data, 0, sizeof(smp->data));
 126
 127         /*
 128          * We only support one GUID for now.  If this changes, the
 129          * portinfo.guid_cap field needs to be updated too.
 130          */
 131         if (startgx == 0)
 132                 /* The first is a copy of the read-only HW GUID. */
 133                 *p = ipath_layer_get_guid(to_idev(ibdev)->dd);
 134         else
 135                 smp->status |= IB_SMP_INVALID_FIELD;
 136
 137         return reply(smp);
 138 }
 139
 140 struct port_info {
 141         __be64 mkey;
 142         __be64 gid_prefix;
 143         __be16 lid;
 144         __be16 sm_lid;
 145         __be32 cap_mask;
 146         __be16 diag_code;
 147         __be16 mkey_lease_period;
 148         u8 local_port_num;
 149         u8 link_width_enabled;
 150         u8 link_width_supported;
 151         u8 link_width_active;
 152         u8 linkspeed_portstate;                 /* 4 bits, 4 bits */
 153         u8 portphysstate_linkdown;              /* 4 bits, 4 bits */
 154         u8 mkeyprot_resv_lmc;                   /* 2 bits, 3, 3 */
 155         u8 linkspeedactive_enabled;             /* 4 bits, 4 bits */
 156         u8 neighbormtu_mastersmsl;              /* 4 bits, 4 bits */
 157         u8 vlcap_inittype;                      /* 4 bits, 4 bits */
 158         u8 vl_high_limit;
 159         u8 vl_arb_high_cap;
 160         u8 vl_arb_low_cap;
 161         u8 inittypereply_mtucap;                /* 4 bits, 4 bits */
 162         u8 vlstallcnt_hoqlife;                  /* 3 bits, 5 bits */
 163         u8 operationalvl_pei_peo_fpi_fpo;       /* 4 bits, 1, 1, 1, 1 */
 164         __be16 mkey_violations;
 165         __be16 pkey_violations;
 166         __be16 qkey_violations;
 167         u8 guid_cap;
 168         u8 clientrereg_resv_subnetto;           /* 1 bit, 2 bits, 5 */
 169         u8 resv_resptimevalue;                  /* 3 bits, 5 bits */
 170         u8 localphyerrors_overrunerrors;        /* 4 bits, 4 bits */
 171         __be16 max_credit_hint;
 172         u8 resv;
 173         u8 link_roundtrip_latency[3];
 174 } __attribute__ ((packed));
 175
 176 static int recv_subn_get_portinfo(struct ib_smp *smp,
 177                                   struct ib_device *ibdev, u8 port)
 178 {
 179         struct ipath_ibdev *dev;
 180         struct port_info *pip = (struct port_info *)smp->data;
 181         u16 lid;
 182         u8 ibcstat;
 183         u8 mtu;
 184         int ret;
 185
 186         if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) {
 187                 smp->status |= IB_SMP_INVALID_FIELD;
 188                 ret = reply(smp);
 189                 goto bail;
 190         }
 191
 192         dev = to_idev(ibdev);
 193
 194         /* Clear all fields.  Only set the non-zero fields. */
 195         memset(smp->data, 0, sizeof(smp->data));
 196
 197         /* Only return the mkey if the protection field allows it. */
 198         if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey ||
 199             (dev->mkeyprot_resv_lmc >> 6) == 0)
 200                 pip->mkey = dev->mkey;
 201         pip->gid_prefix = dev->gid_prefix;
 202         lid = ipath_layer_get_lid(dev->dd);
 203         pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
 204         pip->sm_lid = cpu_to_be16(dev->sm_lid);
 205         pip->cap_mask = cpu_to_be32(dev->port_cap_flags);
 206         /* pip->diag_code; */
 207         pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period);
 208         pip->local_port_num = port;
 209         pip->link_width_enabled = dev->link_width_enabled;
 210         pip->link_width_supported = 3;  /* 1x or 4x */
 211         pip->link_width_active = 2;     /* 4x */
 212         pip->linkspeed_portstate = 0x10;        /* 2.5Gbps */
 213         ibcstat = ipath_layer_get_lastibcstat(dev->dd);
 214         pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1;
 215         pip->portphysstate_linkdown =
 216                 (ipath_cvt_physportstate[ibcstat & 0xf] << 4) |
 217                 (ipath_layer_get_linkdowndefaultstate(dev->dd) ? 1 : 2);
 218         pip->mkeyprot_resv_lmc = dev->mkeyprot_resv_lmc;
 219         pip->linkspeedactive_enabled = 0x11;    /* 2.5Gbps, 2.5Gbps */
 220         switch (ipath_layer_get_ibmtu(dev->dd)) {
 221         case 4096:
 222                 mtu = IB_MTU_4096;
 223                 break;
 224         case 2048:
 225                 mtu = IB_MTU_2048;
 226                 break;
 227         case 1024:
 228                 mtu = IB_MTU_1024;
 229                 break;
 230         case 512:
 231                 mtu = IB_MTU_512;
 232                 break;
 233         case 256:
 234                 mtu = IB_MTU_256;
 235                 break;
 236         default:                /* oops, something is wrong */
 237                 mtu = IB_MTU_2048;
 238                 break;
 239         }
 240         pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl;
 241         pip->vlcap_inittype = 0x10;     /* VLCap = VL0, InitType = 0 */
 242         pip->vl_high_limit = dev->vl_high_limit;
 243         /* pip->vl_arb_high_cap; // only one VL */
 244         /* pip->vl_arb_low_cap; // only one VL */
 245         /* InitTypeReply = 0 */
 246         pip->inittypereply_mtucap = IB_MTU_4096;
 247         // HCAs ignore VLStallCount and HOQLife
 248         /* pip->vlstallcnt_hoqlife; */
 249         pip->operationalvl_pei_peo_fpi_fpo = 0x10;      /* OVLs = 1 */
 250         pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
 251         /* P_KeyViolations are counted by hardware. */
 252         pip->pkey_violations =
 253                 cpu_to_be16((ipath_layer_get_cr_errpkey(dev->dd) -
 254                              dev->n_pkey_violations) & 0xFFFF);
 255         pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
 256         /* Only the hardware GUID is supported for now */
 257         pip->guid_cap = 1;
 258         pip->clientrereg_resv_subnetto = dev->subnet_timeout;
 259         /* 32.768 usec. response time (guessing) */
 260         pip->resv_resptimevalue = 3;
 261         pip->localphyerrors_overrunerrors =
 262                 (ipath_layer_get_phyerrthreshold(dev->dd) << 4) |
 263                 ipath_layer_get_overrunthreshold(dev->dd);
 264         /* pip->max_credit_hint; */
 265         /* pip->link_roundtrip_latency[3]; */
 266
 267         ret = reply(smp);
 268
 269 bail:
 270         return ret;
 271 }
 272
 273 static int recv_subn_get_pkeytable(struct ib_smp *smp,
 274                                    struct ib_device *ibdev)
 275 {
 276         u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
 277         u16 *p = (u16 *) smp->data;
 278         __be16 *q = (__be16 *) smp->data;
 279
 280         /* 64 blocks of 32 16-bit P_Key entries */
 281
 282         memset(smp->data, 0, sizeof(smp->data));
 283         if (startpx == 0) {
 284                 struct ipath_ibdev *dev = to_idev(ibdev);
 285                 unsigned i, n = ipath_layer_get_npkeys(dev->dd);
 286
 287                 ipath_layer_get_pkeys(dev->dd, p);
 288
 289                 for (i = 0; i < n; i++)
 290                         q[i] = cpu_to_be16(p[i]);
 291         } else
 292                 smp->status |= IB_SMP_INVALID_FIELD;
 293
 294         return reply(smp);
 295 }
 296
 297 static int recv_subn_set_guidinfo(struct ib_smp *smp,
 298                                   struct ib_device *ibdev)
 299 {
 300         /* The only GUID we support is the first read-only entry. */
 301         return recv_subn_get_guidinfo(smp, ibdev);
 302 }
 303
 304 /**
 305  * recv_subn_set_portinfo - set port information
 306  * @smp: the incoming SM packet
 307  * @ibdev: the infiniband device
 308  * @port: the port on the device
 309  *
 310  * Set Portinfo (see ch. 14.2.5.6).
 311  */
 312 static int recv_subn_set_portinfo(struct ib_smp *smp,
 313                                   struct ib_device *ibdev, u8 port)
 314 {
 315         struct port_info *pip = (struct port_info *)smp->data;
 316         struct ib_event event;
 317         struct ipath_ibdev *dev;
 318         u32 flags;
 319         char clientrereg = 0;
 320         u16 lid, smlid;
 321         u8 lwe;
 322         u8 lse;
 323         u8 state;
 324         u16 lstate;
 325         u32 mtu;
 326         int ret;
 327
 328         if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
 329                 goto err;
 330
 331         dev = to_idev(ibdev);
 332         event.device = ibdev;
 333         event.element.port_num = port;
 334
 335         dev->mkey = pip->mkey;
 336         dev->gid_prefix = pip->gid_prefix;
 337         dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
 338
 339         lid = be16_to_cpu(pip->lid);
 340         if (lid != ipath_layer_get_lid(dev->dd)) {
 341                 /* Must be a valid unicast LID address. */
 342                 if (lid == 0 || lid >= IPS_MULTICAST_LID_BASE)
 343                         goto err;
 344                 ipath_set_sps_lid(dev->dd, lid, pip->mkeyprot_resv_lmc & 7);
 345                 event.event = IB_EVENT_LID_CHANGE;
 346                 ib_dispatch_event(&event);
 347         }
 348
 349         smlid = be16_to_cpu(pip->sm_lid);
 350         if (smlid != dev->sm_lid) {
 351                 /* Must be a valid unicast LID address. */
 352                 if (smlid == 0 || smlid >= IPS_MULTICAST_LID_BASE)
 353                         goto err;
 354                 dev->sm_lid = smlid;
 355                 event.event = IB_EVENT_SM_CHANGE;
 356                 ib_dispatch_event(&event);
 357         }
 358
 359         /* Only 4x supported but allow 1x or 4x to be set (see 14.2.6.6). */
 360         lwe = pip->link_width_enabled;
 361         if ((lwe >= 4 && lwe <= 8) || (lwe >= 0xC && lwe <= 0xFE))
 362                 goto err;
 363         if (lwe == 0xFF)
 364                 dev->link_width_enabled = 3;    /* 1x or 4x */
 365         else if (lwe)
 366                 dev->link_width_enabled = lwe;
 367
 368         /* Only 2.5 Gbs supported. */
 369         lse = pip->linkspeedactive_enabled & 0xF;
 370         if (lse >= 2 && lse <= 0xE)
 371                 goto err;
 372
 373         /* Set link down default state. */
 374         switch (pip->portphysstate_linkdown & 0xF) {
 375         case 0: /* NOP */
 376                 break;
 377         case 1: /* SLEEP */
 378                 if (ipath_layer_set_linkdowndefaultstate(dev->dd, 1))
 379                         goto err;
 380                 break;
 381         case 2: /* POLL */
 382                 if (ipath_layer_set_linkdowndefaultstate(dev->dd, 0))
 383                         goto err;
 384                 break;
 385         default:
 386                 goto err;
 387         }
 388
 389         dev->mkeyprot_resv_lmc = pip->mkeyprot_resv_lmc;
 390         dev->vl_high_limit = pip->vl_high_limit;
 391
 392         switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) {
 393         case IB_MTU_256:
 394                 mtu = 256;
 395                 break;
 396         case IB_MTU_512:
 397                 mtu = 512;
 398                 break;
 399         case IB_MTU_1024:
 400                 mtu = 1024;
 401                 break;
 402         case IB_MTU_2048:
 403                 mtu = 2048;
 404                 break;
 405         case IB_MTU_4096:
 406                 mtu = 4096;
 407                 break;
 408         default:
 409                 /* XXX We have already partially updated our state! */
 410                 goto err;
 411         }
 412         ipath_layer_set_mtu(dev->dd, mtu);
 413
 414         dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
 415
 416         /* We only support VL0 */
 417         if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1)
 418                 goto err;
 419
 420         if (pip->mkey_violations == 0)
 421                 dev->mkey_violations = 0;
 422
 423         /*
 424          * Hardware counter can't be reset so snapshot and subtract
 425          * later.
 426          */
 427         if (pip->pkey_violations == 0)
 428                 dev->n_pkey_violations =
 429                         ipath_layer_get_cr_errpkey(dev->dd);
 430
 431         if (pip->qkey_violations == 0)
 432                 dev->qkey_violations = 0;
 433
 434         if (ipath_layer_set_phyerrthreshold(
 435                     dev->dd,
 436                     (pip->localphyerrors_overrunerrors >> 4) & 0xF))
 437                 goto err;
 438
 439         if (ipath_layer_set_overrunthreshold(
 440                     dev->dd,
 441                     (pip->localphyerrors_overrunerrors & 0xF)))
 442                 goto err;
 443
 444         dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
 445
 446         if (pip->clientrereg_resv_subnetto & 0x80) {
 447                 clientrereg = 1;
 448                 event.event = IB_EVENT_LID_CHANGE;
 449                 ib_dispatch_event(&event);
 450         }
 451
 452         /*
 453          * Do the port state change now that the other link parameters
 454          * have been set.
 455          * Changing the port physical state only makes sense if the link
 456          * is down or is being set to down.
 457          */
 458         state = pip->linkspeed_portstate & 0xF;
 459         flags = ipath_layer_get_flags(dev->dd);
 460         lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
 461         if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
 462                 goto err;
 463
 464         /*
 465          * Only state changes of DOWN, ARM, and ACTIVE are valid
 466          * and must be in the correct state to take effect (see 7.2.6).
 467          */
 468         switch (state) {
 469         case IB_PORT_NOP:
 470                 if (lstate == 0)
 471                         break;
 472                 /* FALLTHROUGH */
 473         case IB_PORT_DOWN:
 474                 if (lstate == 0)
 475                         if (ipath_layer_get_linkdowndefaultstate(dev->dd))
 476                                 lstate = IPATH_IB_LINKDOWN_SLEEP;
 477                         else
 478                                 lstate = IPATH_IB_LINKDOWN;
 479                 else if (lstate == 1)
 480                         lstate = IPATH_IB_LINKDOWN_SLEEP;
 481                 else if (lstate == 2)
 482                         lstate = IPATH_IB_LINKDOWN;
 483                 else if (lstate == 3)
 484                         lstate = IPATH_IB_LINKDOWN_DISABLE;
 485                 else
 486                         goto err;
 487                 ipath_layer_set_linkstate(dev->dd, lstate);
 488                 if (flags & IPATH_LINKACTIVE) {
 489                         event.event = IB_EVENT_PORT_ERR;
 490                         ib_dispatch_event(&event);
 491                 }
 492                 break;
 493         case IB_PORT_ARMED:
 494                 if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE)))
 495                         break;
 496                 ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKARM);
 497                 if (flags & IPATH_LINKACTIVE) {
 498                         event.event = IB_EVENT_PORT_ERR;
 499                         ib_dispatch_event(&event);
 500                 }
 501                 break;
 502         case IB_PORT_ACTIVE:
 503                 if (!(flags & IPATH_LINKARMED))
 504                         break;
 505                 ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
 506                 event.event = IB_EVENT_PORT_ACTIVE;
 507                 ib_dispatch_event(&event);
 508                 break;
 509         default:
 510                 /* XXX We have already partially updated our state! */
 511                 goto err;
 512         }
 513
 514         ret = recv_subn_get_portinfo(smp, ibdev, port);
 515
 516         if (clientrereg)
 517                 pip->clientrereg_resv_subnetto |= 0x80;
 518
 519         goto done;
 520
 521 err:
 522         smp->status |= IB_SMP_INVALID_FIELD;
 523         ret = recv_subn_get_portinfo(smp, ibdev, port);
 524
 525 done:
 526         return ret;
 527 }
 528
 529 static int recv_subn_set_pkeytable(struct ib_smp *smp,
 530                                    struct ib_device *ibdev)
 531 {
 532         u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff);
 533         __be16 *p = (__be16 *) smp->data;
 534         u16 *q = (u16 *) smp->data;
 535         struct ipath_ibdev *dev = to_idev(ibdev);
 536         unsigned i, n = ipath_layer_get_npkeys(dev->dd);
 537
 538         for (i = 0; i < n; i++)
 539                 q[i] = be16_to_cpu(p[i]);
 540
 541         if (startpx != 0 ||
 542             ipath_layer_set_pkeys(dev->dd, q) != 0)
 543                 smp->status |= IB_SMP_INVALID_FIELD;
 544
 545         return recv_subn_get_pkeytable(smp, ibdev);
 546 }
 547
 548 #define IB_PMA_CLASS_PORT_INFO          __constant_htons(0x0001)
 549 #define IB_PMA_PORT_SAMPLES_CONTROL     __constant_htons(0x0010)
 550 #define IB_PMA_PORT_SAMPLES_RESULT      __constant_htons(0x0011)
 551 #define IB_PMA_PORT_COUNTERS            __constant_htons(0x0012)
 552 #define IB_PMA_PORT_COUNTERS_EXT        __constant_htons(0x001D)
 553 #define IB_PMA_PORT_SAMPLES_RESULT_EXT  __constant_htons(0x001E)
 554
 555 struct ib_perf {
 556         u8 base_version;
 557         u8 mgmt_class;
 558         u8 class_version;
 559         u8 method;
 560         __be16 status;
 561         __be16 unused;
 562         __be64 tid;
 563         __be16 attr_id;
 564         __be16 resv;
 565         __be32 attr_mod;
 566         u8 reserved[40];
 567         u8 data[192];
 568 } __attribute__ ((packed));
 569
 570 struct ib_pma_classportinfo {
 571         u8 base_version;
 572         u8 class_version;
 573         __be16 cap_mask;
 574         u8 reserved[3];
 575         u8 resp_time_value;     /* only lower 5 bits */
 576         union ib_gid redirect_gid;
 577         __be32 redirect_tc_sl_fl;       /* 8, 4, 20 bits respectively */
 578         __be16 redirect_lid;
 579         __be16 redirect_pkey;
 580         __be32 redirect_qp;     /* only lower 24 bits */
 581         __be32 redirect_qkey;
 582         union ib_gid trap_gid;
 583         __be32 trap_tc_sl_fl;   /* 8, 4, 20 bits respectively */
 584         __be16 trap_lid;
 585         __be16 trap_pkey;
 586         __be32 trap_hl_qp;      /* 8, 24 bits respectively */
 587         __be32 trap_qkey;
 588 } __attribute__ ((packed));
 589
 590 struct ib_pma_portsamplescontrol {
 591         u8 opcode;
 592         u8 port_select;
 593         u8 tick;
 594         u8 counter_width;       /* only lower 3 bits */
 595         __be32 counter_mask0_9; /* 2, 10 * 3, bits */
 596         __be16 counter_mask10_14;       /* 1, 5 * 3, bits */
 597         u8 sample_mechanisms;
 598         u8 sample_status;       /* only lower 2 bits */
 599         __be64 option_mask;
 600         __be64 vendor_mask;
 601         __be32 sample_start;
 602         __be32 sample_interval;
 603         __be16 tag;
 604         __be16 counter_select[15];
 605 } __attribute__ ((packed));
 606
 607 struct ib_pma_portsamplesresult {
 608         __be16 tag;
 609         __be16 sample_status;   /* only lower 2 bits */
 610         __be32 counter[15];
 611 } __attribute__ ((packed));
 612
 613 struct ib_pma_portsamplesresult_ext {
 614         __be16 tag;
 615         __be16 sample_status;   /* only lower 2 bits */
 616         __be32 extended_width;  /* only upper 2 bits */
 617         __be64 counter[15];
 618 } __attribute__ ((packed));
 619
 620 struct ib_pma_portcounters {
 621         u8 reserved;
 622         u8 port_select;
 623         __be16 counter_select;
 624         __be16 symbol_error_counter;
 625         u8 link_error_recovery_counter;
 626         u8 link_downed_counter;
 627         __be16 port_rcv_errors;
 628         __be16 port_rcv_remphys_errors;
 629         __be16 port_rcv_switch_relay_errors;
 630         __be16 port_xmit_discards;
 631         u8 port_xmit_constraint_errors;
 632         u8 port_rcv_constraint_errors;
 633         u8 reserved1;
 634         u8 lli_ebor_errors;     /* 4, 4, bits */
 635         __be16 reserved2;
 636         __be16 vl15_dropped;
 637         __be32 port_xmit_data;
 638         __be32 port_rcv_data;
 639         __be32 port_xmit_packets;
 640         __be32 port_rcv_packets;
 641 } __attribute__ ((packed));
 642
 643 #define IB_PMA_SEL_SYMBOL_ERROR                 __constant_htons(0x0001)
 644 #define IB_PMA_SEL_LINK_ERROR_RECOVERY          __constant_htons(0x0002)
 645 #define IB_PMA_SEL_LINK_DOWNED                  __constant_htons(0x0004)
 646 #define IB_PMA_SEL_PORT_RCV_ERRORS              __constant_htons(0x0008)
 647 #define IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS      __constant_htons(0x0010)
 648 #define IB_PMA_SEL_PORT_XMIT_DISCARDS           __constant_htons(0x0040)
 649 #define IB_PMA_SEL_PORT_XMIT_DATA               __constant_htons(0x1000)
 650 #define IB_PMA_SEL_PORT_RCV_DATA                __constant_htons(0x2000)
 651 #define IB_PMA_SEL_PORT_XMIT_PACKETS            __constant_htons(0x4000)
 652 #define IB_PMA_SEL_PORT_RCV_PACKETS             __constant_htons(0x8000)
 653
 654 struct ib_pma_portcounters_ext {
 655         u8 reserved;
 656         u8 port_select;
 657         __be16 counter_select;
 658         __be32 reserved1;
 659         __be64 port_xmit_data;
 660         __be64 port_rcv_data;
 661         __be64 port_xmit_packets;
 662         __be64 port_rcv_packets;
 663         __be64 port_unicast_xmit_packets;
 664         __be64 port_unicast_rcv_packets;
 665         __be64 port_multicast_xmit_packets;
 666         __be64 port_multicast_rcv_packets;
 667 } __attribute__ ((packed));
 668
 669 #define IB_PMA_SELX_PORT_XMIT_DATA              __constant_htons(0x0001)
 670 #define IB_PMA_SELX_PORT_RCV_DATA               __constant_htons(0x0002)
 671 #define IB_PMA_SELX_PORT_XMIT_PACKETS           __constant_htons(0x0004)
 672 #define IB_PMA_SELX_PORT_RCV_PACKETS            __constant_htons(0x0008)
 673 #define IB_PMA_SELX_PORT_UNI_XMIT_PACKETS       __constant_htons(0x0010)
 674 #define IB_PMA_SELX_PORT_UNI_RCV_PACKETS        __constant_htons(0x0020)
 675 #define IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS     __constant_htons(0x0040)
 676 #define IB_PMA_SELX_PORT_MULTI_RCV_PACKETS      __constant_htons(0x0080)
 677
 678 static int recv_pma_get_classportinfo(struct ib_perf *pmp)
 679 {
 680         struct ib_pma_classportinfo *p =
 681                 (struct ib_pma_classportinfo *)pmp->data;
 682
 683         memset(pmp->data, 0, sizeof(pmp->data));
 684
 685         if (pmp->attr_mod != 0)
 686                 pmp->status |= IB_SMP_INVALID_FIELD;
 687
 688         /* Indicate AllPortSelect is valid (only one port anyway) */
 689         p->cap_mask = __constant_cpu_to_be16(1 << 8);
 690         p->base_version = 1;
 691         p->class_version = 1;
 692         /*
 693          * Expected response time is 4.096 usec. * 2^18 == 1.073741824
 694          * sec.
 695          */
 696         p->resp_time_value = 18;
 697
 698         return reply((struct ib_smp *) pmp);
 699 }
 700
 701 /*
 702  * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
 703  * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
 704  * We support 5 counters which only count the mandatory quantities.
 705  */
 706 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
 707 #define COUNTER_MASK0_9 \
 708         __constant_cpu_to_be32(COUNTER_MASK(1, 0) | \
 709                                COUNTER_MASK(1, 1) | \
 710                                COUNTER_MASK(1, 2) | \
 711                                COUNTER_MASK(1, 3) | \
 712                                COUNTER_MASK(1, 4))
 713
 714 static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp,
 715                                            struct ib_device *ibdev, u8 port)
 716 {
 717         struct ib_pma_portsamplescontrol *p =
 718                 (struct ib_pma_portsamplescontrol *)pmp->data;
 719         struct ipath_ibdev *dev = to_idev(ibdev);
 720         unsigned long flags;
 721         u8 port_select = p->port_select;
 722
 723         memset(pmp->data, 0, sizeof(pmp->data));
 724
 725         p->port_select = port_select;
 726         if (pmp->attr_mod != 0 ||
 727             (port_select != port && port_select != 0xFF))
 728                 pmp->status |= IB_SMP_INVALID_FIELD;
 729         /*
 730          * Ticks are 10x the link transfer period which for 2.5Gbs is 4
 731          * nsec.  0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec.  Sample
 732          * intervals are counted in ticks.  Since we use Linux timers, that
 733          * count in jiffies, we can't sample for less than 1000 ticks if HZ
 734          * == 1000 (4000 ticks if HZ is 250).
 735          */
 736         /* XXX This is WRONG. */
 737         p->tick = 250;          /* 1 usec. */
 738         p->counter_width = 4;   /* 32 bit counters */
 739         p->counter_mask0_9 = COUNTER_MASK0_9;
 740         spin_lock_irqsave(&dev->pending_lock, flags);
 741         p->sample_status = dev->pma_sample_status;
 742         p->sample_start = cpu_to_be32(dev->pma_sample_start);
 743         p->sample_interval = cpu_to_be32(dev->pma_sample_interval);
 744         p->tag = cpu_to_be16(dev->pma_tag);
 745         p->counter_select[0] = dev->pma_counter_select[0];
 746         p->counter_select[1] = dev->pma_counter_select[1];
 747         p->counter_select[2] = dev->pma_counter_select[2];
 748         p->counter_select[3] = dev->pma_counter_select[3];
 749         p->counter_select[4] = dev->pma_counter_select[4];
 750         spin_unlock_irqrestore(&dev->pending_lock, flags);
 751
 752         return reply((struct ib_smp *) pmp);
 753 }
 754
 755 static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp,
 756                                            struct ib_device *ibdev, u8 port)
 757 {
 758         struct ib_pma_portsamplescontrol *p =
 759                 (struct ib_pma_portsamplescontrol *)pmp->data;
 760         struct ipath_ibdev *dev = to_idev(ibdev);
 761         unsigned long flags;
 762         u32 start;
 763         int ret;
 764
 765         if (pmp->attr_mod != 0 ||
 766             (p->port_select != port && p->port_select != 0xFF)) {
 767                 pmp->status |= IB_SMP_INVALID_FIELD;
 768                 ret = reply((struct ib_smp *) pmp);
 769                 goto bail;
 770         }
 771
 772         start = be32_to_cpu(p->sample_start);
 773         if (start != 0) {
 774                 spin_lock_irqsave(&dev->pending_lock, flags);
 775                 if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) {
 776                         dev->pma_sample_status =
 777                                 IB_PMA_SAMPLE_STATUS_STARTED;
 778                         dev->pma_sample_start = start;
 779                         dev->pma_sample_interval =
 780                                 be32_to_cpu(p->sample_interval);
 781                         dev->pma_tag = be16_to_cpu(p->tag);
 782                         if (p->counter_select[0])
 783                                 dev->pma_counter_select[0] =
 784                                         p->counter_select[0];
 785                         if (p->counter_select[1])
 786                                 dev->pma_counter_select[1] =
 787                                         p->counter_select[1];
 788                         if (p->counter_select[2])
 789                                 dev->pma_counter_select[2] =
 790                                         p->counter_select[2];
 791                         if (p->counter_select[3])
 792                                 dev->pma_counter_select[3] =
 793                                         p->counter_select[3];
 794                         if (p->counter_select[4])
 795                                 dev->pma_counter_select[4] =
 796                                         p->counter_select[4];
 797                 }
 798                 spin_unlock_irqrestore(&dev->pending_lock, flags);
 799         }
 800         ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port);
 801
 802 bail:
 803         return ret;
 804 }
 805
 806 static u64 get_counter(struct ipath_ibdev *dev, __be16 sel)
 807 {
 808         u64 ret;
 809
 810         switch (sel) {
 811         case IB_PMA_PORT_XMIT_DATA:
 812                 ret = dev->ipath_sword;
 813                 break;
 814         case IB_PMA_PORT_RCV_DATA:
 815                 ret = dev->ipath_rword;
 816                 break;
 817         case IB_PMA_PORT_XMIT_PKTS:
 818                 ret = dev->ipath_spkts;
 819                 break;
 820         case IB_PMA_PORT_RCV_PKTS:
 821                 ret = dev->ipath_rpkts;
 822                 break;
 823         case IB_PMA_PORT_XMIT_WAIT:
 824                 ret = dev->ipath_xmit_wait;
 825                 break;
 826         default:
 827                 ret = 0;
 828         }
 829
 830         return ret;
 831 }
 832
 833 static int recv_pma_get_portsamplesresult(struct ib_perf *pmp,
 834                                           struct ib_device *ibdev)
 835 {
 836         struct ib_pma_portsamplesresult *p =
 837                 (struct ib_pma_portsamplesresult *)pmp->data;
 838         struct ipath_ibdev *dev = to_idev(ibdev);
 839         int i;
 840
 841         memset(pmp->data, 0, sizeof(pmp->data));
 842         p->tag = cpu_to_be16(dev->pma_tag);
 843         p->sample_status = cpu_to_be16(dev->pma_sample_status);
 844         for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
 845                 p->counter[i] = cpu_to_be32(
 846                         get_counter(dev, dev->pma_counter_select[i]));
 847
 848         return reply((struct ib_smp *) pmp);
 849 }
 850
 851 static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp,
 852                                               struct ib_device *ibdev)
 853 {
 854         struct ib_pma_portsamplesresult_ext *p =
 855                 (struct ib_pma_portsamplesresult_ext *)pmp->data;
 856         struct ipath_ibdev *dev = to_idev(ibdev);
 857         int i;
 858
 859         memset(pmp->data, 0, sizeof(pmp->data));
 860         p->tag = cpu_to_be16(dev->pma_tag);
 861         p->sample_status = cpu_to_be16(dev->pma_sample_status);
 862         /* 64 bits */
 863         p->extended_width = __constant_cpu_to_be32(0x80000000);
 864         for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++)
 865                 p->counter[i] = cpu_to_be64(
 866                         get_counter(dev, dev->pma_counter_select[i]));
 867
 868         return reply((struct ib_smp *) pmp);
 869 }
 870
 871 static int recv_pma_get_portcounters(struct ib_perf *pmp,
 872                                      struct ib_device *ibdev, u8 port)
 873 {
 874         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
 875                 pmp->data;
 876         struct ipath_ibdev *dev = to_idev(ibdev);
 877         struct ipath_layer_counters cntrs;
 878         u8 port_select = p->port_select;
 879
 880         ipath_layer_get_counters(dev->dd, &cntrs);
 881
 882         /* Adjust counters for any resets done. */
 883         cntrs.symbol_error_counter -= dev->n_symbol_error_counter;
 884         cntrs.link_error_recovery_counter -=
 885                 dev->n_link_error_recovery_counter;
 886         cntrs.link_downed_counter -= dev->n_link_downed_counter;
 887         cntrs.port_rcv_errors += dev->rcv_errors;
 888         cntrs.port_rcv_errors -= dev->n_port_rcv_errors;
 889         cntrs.port_rcv_remphys_errors -= dev->n_port_rcv_remphys_errors;
 890         cntrs.port_xmit_discards -= dev->n_port_xmit_discards;
 891         cntrs.port_xmit_data -= dev->n_port_xmit_data;
 892         cntrs.port_rcv_data -= dev->n_port_rcv_data;
 893         cntrs.port_xmit_packets -= dev->n_port_xmit_packets;
 894         cntrs.port_rcv_packets -= dev->n_port_rcv_packets;
 895
 896         memset(pmp->data, 0, sizeof(pmp->data));
 897
 898         p->port_select = port_select;
 899         if (pmp->attr_mod != 0 ||
 900             (port_select != port && port_select != 0xFF))
 901                 pmp->status |= IB_SMP_INVALID_FIELD;
 902
 903         if (cntrs.symbol_error_counter > 0xFFFFUL)
 904                 p->symbol_error_counter = __constant_cpu_to_be16(0xFFFF);
 905         else
 906                 p->symbol_error_counter =
 907                         cpu_to_be16((u16)cntrs.symbol_error_counter);
 908         if (cntrs.link_error_recovery_counter > 0xFFUL)
 909                 p->link_error_recovery_counter = 0xFF;
 910         else
 911                 p->link_error_recovery_counter =
 912                         (u8)cntrs.link_error_recovery_counter;
 913         if (cntrs.link_downed_counter > 0xFFUL)
 914                 p->link_downed_counter = 0xFF;
 915         else
 916                 p->link_downed_counter = (u8)cntrs.link_downed_counter;
 917         if (cntrs.port_rcv_errors > 0xFFFFUL)
 918                 p->port_rcv_errors = __constant_cpu_to_be16(0xFFFF);
 919         else
 920                 p->port_rcv_errors =
 921                         cpu_to_be16((u16) cntrs.port_rcv_errors);
 922         if (cntrs.port_rcv_remphys_errors > 0xFFFFUL)
 923                 p->port_rcv_remphys_errors = __constant_cpu_to_be16(0xFFFF);
 924         else
 925                 p->port_rcv_remphys_errors =
 926                         cpu_to_be16((u16)cntrs.port_rcv_remphys_errors);
 927         if (cntrs.port_xmit_discards > 0xFFFFUL)
 928                 p->port_xmit_discards = __constant_cpu_to_be16(0xFFFF);
 929         else
 930                 p->port_xmit_discards =
 931                         cpu_to_be16((u16)cntrs.port_xmit_discards);
 932         if (cntrs.port_xmit_data > 0xFFFFFFFFUL)
 933                 p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF);
 934         else
 935                 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data);
 936         if (cntrs.port_rcv_data > 0xFFFFFFFFUL)
 937                 p->port_rcv_data = __constant_cpu_to_be32(0xFFFFFFFF);
 938         else
 939                 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data);
 940         if (cntrs.port_xmit_packets > 0xFFFFFFFFUL)
 941                 p->port_xmit_packets = __constant_cpu_to_be32(0xFFFFFFFF);
 942         else
 943                 p->port_xmit_packets =
 944                         cpu_to_be32((u32)cntrs.port_xmit_packets);
 945         if (cntrs.port_rcv_packets > 0xFFFFFFFFUL)
 946                 p->port_rcv_packets = __constant_cpu_to_be32(0xFFFFFFFF);
 947         else
 948                 p->port_rcv_packets =
 949                         cpu_to_be32((u32) cntrs.port_rcv_packets);
 950
 951         return reply((struct ib_smp *) pmp);
 952 }
 953
 954 static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
 955                                          struct ib_device *ibdev, u8 port)
 956 {
 957         struct ib_pma_portcounters_ext *p =
 958                 (struct ib_pma_portcounters_ext *)pmp->data;
 959         struct ipath_ibdev *dev = to_idev(ibdev);
 960         u64 swords, rwords, spkts, rpkts, xwait;
 961         u8 port_select = p->port_select;
 962
 963         ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
 964                                       &rpkts, &xwait);
 965
 966         /* Adjust counters for any resets done. */
 967         swords -= dev->n_port_xmit_data;
 968         rwords -= dev->n_port_rcv_data;
 969         spkts -= dev->n_port_xmit_packets;
 970         rpkts -= dev->n_port_rcv_packets;
 971
 972         memset(pmp->data, 0, sizeof(pmp->data));
 973
 974         p->port_select = port_select;
 975         if (pmp->attr_mod != 0 ||
 976             (port_select != port && port_select != 0xFF))
 977                 pmp->status |= IB_SMP_INVALID_FIELD;
 978
 979         p->port_xmit_data = cpu_to_be64(swords);
 980         p->port_rcv_data = cpu_to_be64(rwords);
 981         p->port_xmit_packets = cpu_to_be64(spkts);
 982         p->port_rcv_packets = cpu_to_be64(rpkts);
 983         p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit);
 984         p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv);
 985         p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit);
 986         p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv);
 987
 988         return reply((struct ib_smp *) pmp);
 989 }
 990
 991 static int recv_pma_set_portcounters(struct ib_perf *pmp,
 992                                      struct ib_device *ibdev, u8 port)
 993 {
 994         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
 995                 pmp->data;
 996         struct ipath_ibdev *dev = to_idev(ibdev);
 997         struct ipath_layer_counters cntrs;
 998
 999         /*
1000          * Since the HW doesn't support clearing counters, we save the
1001          * current count and subtract it from future responses.
1002          */
1003         ipath_layer_get_counters(dev->dd, &cntrs);
1004
1005         if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
1006                 dev->n_symbol_error_counter = cntrs.symbol_error_counter;
1007
1008         if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY)
1009                 dev->n_link_error_recovery_counter =
1010                         cntrs.link_error_recovery_counter;
1011
1012         if (p->counter_select & IB_PMA_SEL_LINK_DOWNED)
1013                 dev->n_link_downed_counter = cntrs.link_downed_counter;
1014
1015         if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS)
1016                 dev->n_port_rcv_errors =
1017                         cntrs.port_rcv_errors + dev->rcv_errors;
1018
1019         if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS)
1020                 dev->n_port_rcv_remphys_errors =
1021                         cntrs.port_rcv_remphys_errors;
1022
1023         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS)
1024                 dev->n_port_xmit_discards = cntrs.port_xmit_discards;
1025
1026         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA)
1027                 dev->n_port_xmit_data = cntrs.port_xmit_data;
1028
1029         if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA)
1030                 dev->n_port_rcv_data = cntrs.port_rcv_data;
1031
1032         if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS)
1033                 dev->n_port_xmit_packets = cntrs.port_xmit_packets;
1034
1035         if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS)
1036                 dev->n_port_rcv_packets = cntrs.port_rcv_packets;
1037
1038         return recv_pma_get_portcounters(pmp, ibdev, port);
1039 }
1040
1041 static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
1042                                          struct ib_device *ibdev, u8 port)
1043 {
1044         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
1045                 pmp->data;
1046         struct ipath_ibdev *dev = to_idev(ibdev);
1047         u64 swords, rwords, spkts, rpkts, xwait;
1048
1049         ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
1050                                       &rpkts, &xwait);
1051
1052         if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
1053                 dev->n_port_xmit_data = swords;
1054
1055         if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA)
1056                 dev->n_port_rcv_data = rwords;
1057
1058         if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS)
1059                 dev->n_port_xmit_packets = spkts;
1060
1061         if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS)
1062                 dev->n_port_rcv_packets = rpkts;
1063
1064         if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
1065                 dev->n_unicast_xmit = 0;
1066
1067         if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
1068                 dev->n_unicast_rcv = 0;
1069
1070         if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
1071                 dev->n_multicast_xmit = 0;
1072
1073         if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
1074                 dev->n_multicast_rcv = 0;
1075
1076         return recv_pma_get_portcounters_ext(pmp, ibdev, port);
1077 }
1078
1079 static int process_subn(struct ib_device *ibdev, int mad_flags,
1080                         u8 port_num, struct ib_mad *in_mad,
1081                         struct ib_mad *out_mad)
1082 {
1083         struct ib_smp *smp = (struct ib_smp *)out_mad;
1084         struct ipath_ibdev *dev = to_idev(ibdev);
1085         int ret;
1086
1087         *out_mad = *in_mad;
1088         if (smp->class_version != 1) {
1089                 smp->status |= IB_SMP_UNSUP_VERSION;
1090                 ret = reply(smp);
1091                 goto bail;
1092         }
1093
1094         /* Is the mkey in the process of expiring? */
1095         if (dev->mkey_lease_timeout && jiffies >= dev->mkey_lease_timeout) {
1096                 /* Clear timeout and mkey protection field. */
1097                 dev->mkey_lease_timeout = 0;
1098                 dev->mkeyprot_resv_lmc &= 0x3F;
1099         }
1100
1101         /*
1102          * M_Key checking depends on
1103          * Portinfo:M_Key_protect_bits
1104          */
1105         if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 &&
1106             dev->mkey != smp->mkey &&
1107             (smp->method == IB_MGMT_METHOD_SET ||
1108              (smp->method == IB_MGMT_METHOD_GET &&
1109               (dev->mkeyprot_resv_lmc >> 7) != 0))) {
1110                 if (dev->mkey_violations != 0xFFFF)
1111                         ++dev->mkey_violations;
1112                 if (dev->mkey_lease_timeout ||
1113                     dev->mkey_lease_period == 0) {
1114                         ret = IB_MAD_RESULT_SUCCESS |
1115                                 IB_MAD_RESULT_CONSUMED;
1116                         goto bail;
1117                 }
1118                 dev->mkey_lease_timeout = jiffies +
1119                         dev->mkey_lease_period * HZ;
1120                 /* Future: Generate a trap notice. */
1121                 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1122                 goto bail;
1123         } else if (dev->mkey_lease_timeout)
1124                 dev->mkey_lease_timeout = 0;
1125
1126         switch (smp->method) {
1127         case IB_MGMT_METHOD_GET:
1128                 switch (smp->attr_id) {
1129                 case IB_SMP_ATTR_NODE_DESC:
1130                         ret = recv_subn_get_nodedescription(smp, ibdev);
1131                         goto bail;
1132                 case IB_SMP_ATTR_NODE_INFO:
1133                         ret = recv_subn_get_nodeinfo(smp, ibdev, port_num);
1134                         goto bail;
1135                 case IB_SMP_ATTR_GUID_INFO:
1136                         ret = recv_subn_get_guidinfo(smp, ibdev);
1137                         goto bail;
1138                 case IB_SMP_ATTR_PORT_INFO:
1139                         ret = recv_subn_get_portinfo(smp, ibdev, port_num);
1140                         goto bail;
1141                 case IB_SMP_ATTR_PKEY_TABLE:
1142                         ret = recv_subn_get_pkeytable(smp, ibdev);
1143                         goto bail;
1144                 case IB_SMP_ATTR_SM_INFO:
1145                         if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1146                                 ret = IB_MAD_RESULT_SUCCESS |
1147                                         IB_MAD_RESULT_CONSUMED;
1148                                 goto bail;
1149                         }
1150                         if (dev->port_cap_flags & IB_PORT_SM) {
1151                                 ret = IB_MAD_RESULT_SUCCESS;
1152                                 goto bail;
1153                         }
1154                         /* FALLTHROUGH */
1155                 default:
1156                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
1157                         ret = reply(smp);
1158                         goto bail;
1159                 }
1160
1161         case IB_MGMT_METHOD_SET:
1162                 switch (smp->attr_id) {
1163                 case IB_SMP_ATTR_GUID_INFO:
1164                         ret = recv_subn_set_guidinfo(smp, ibdev);
1165                         goto bail;
1166                 case IB_SMP_ATTR_PORT_INFO:
1167                         ret = recv_subn_set_portinfo(smp, ibdev, port_num);
1168                         goto bail;
1169                 case IB_SMP_ATTR_PKEY_TABLE:
1170                         ret = recv_subn_set_pkeytable(smp, ibdev);
1171                         goto bail;
1172                 case IB_SMP_ATTR_SM_INFO:
1173                         if (dev->port_cap_flags & IB_PORT_SM_DISABLED) {
1174                                 ret = IB_MAD_RESULT_SUCCESS |
1175                                         IB_MAD_RESULT_CONSUMED;
1176                                 goto bail;
1177                         }
1178                         if (dev->port_cap_flags & IB_PORT_SM) {
1179                                 ret = IB_MAD_RESULT_SUCCESS;
1180                                 goto bail;
1181                         }
1182                         /* FALLTHROUGH */
1183                 default:
1184                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
1185                         ret = reply(smp);
1186                         goto bail;
1187                 }
1188
1189         case IB_MGMT_METHOD_GET_RESP:
1190                 /*
1191                  * The ib_mad module will call us to process responses
1192                  * before checking for other consumers.
1193                  * Just tell the caller to process it normally.
1194                  */
1195                 ret = IB_MAD_RESULT_FAILURE;
1196                 goto bail;
1197         default:
1198                 smp->status |= IB_SMP_UNSUP_METHOD;
1199                 ret = reply(smp);
1200         }
1201
1202 bail:
1203         return ret;
1204 }
1205
1206 static int process_perf(struct ib_device *ibdev, u8 port_num,
1207                         struct ib_mad *in_mad,
1208                         struct ib_mad *out_mad)
1209 {
1210         struct ib_perf *pmp = (struct ib_perf *)out_mad;
1211         int ret;
1212
1213         *out_mad = *in_mad;
1214         if (pmp->class_version != 1) {
1215                 pmp->status |= IB_SMP_UNSUP_VERSION;
1216                 ret = reply((struct ib_smp *) pmp);
1217                 goto bail;
1218         }
1219
1220         switch (pmp->method) {
1221         case IB_MGMT_METHOD_GET:
1222                 switch (pmp->attr_id) {
1223                 case IB_PMA_CLASS_PORT_INFO:
1224                         ret = recv_pma_get_classportinfo(pmp);
1225                         goto bail;
1226                 case IB_PMA_PORT_SAMPLES_CONTROL:
1227                         ret = recv_pma_get_portsamplescontrol(pmp, ibdev,
1228                                                               port_num);
1229                         goto bail;
1230                 case IB_PMA_PORT_SAMPLES_RESULT:
1231                         ret = recv_pma_get_portsamplesresult(pmp, ibdev);
1232                         goto bail;
1233                 case IB_PMA_PORT_SAMPLES_RESULT_EXT:
1234                         ret = recv_pma_get_portsamplesresult_ext(pmp,
1235                                                                  ibdev);
1236                         goto bail;
1237                 case IB_PMA_PORT_COUNTERS:
1238                         ret = recv_pma_get_portcounters(pmp, ibdev,
1239                                                         port_num);
1240                         goto bail;
1241                 case IB_PMA_PORT_COUNTERS_EXT:
1242                         ret = recv_pma_get_portcounters_ext(pmp, ibdev,
1243                                                             port_num);
1244                         goto bail;
1245                 default:
1246                         pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1247                         ret = reply((struct ib_smp *) pmp);
1248                         goto bail;
1249                 }
1250
1251         case IB_MGMT_METHOD_SET:
1252                 switch (pmp->attr_id) {
1253                 case IB_PMA_PORT_SAMPLES_CONTROL:
1254                         ret = recv_pma_set_portsamplescontrol(pmp, ibdev,
1255                                                               port_num);
1256                         goto bail;
1257                 case IB_PMA_PORT_COUNTERS:
1258                         ret = recv_pma_set_portcounters(pmp, ibdev,
1259                                                         port_num);
1260                         goto bail;
1261                 case IB_PMA_PORT_COUNTERS_EXT:
1262                         ret = recv_pma_set_portcounters_ext(pmp, ibdev,
1263                                                             port_num);
1264                         goto bail;
1265                 default:
1266                         pmp->status |= IB_SMP_UNSUP_METH_ATTR;
1267                         ret = reply((struct ib_smp *) pmp);
1268                         goto bail;
1269                 }
1270
1271         case IB_MGMT_METHOD_GET_RESP:
1272                 /*
1273                  * The ib_mad module will call us to process responses
1274                  * before checking for other consumers.
1275                  * Just tell the caller to process it normally.
1276                  */
1277                 ret = IB_MAD_RESULT_FAILURE;
1278                 goto bail;
1279         default:
1280                 pmp->status |= IB_SMP_UNSUP_METHOD;
1281                 ret = reply((struct ib_smp *) pmp);
1282         }
1283
1284 bail:
1285         return ret;
1286 }
1287
1288 /**
1289  * ipath_process_mad - process an incoming MAD packet
1290  * @ibdev: the infiniband device this packet came in on
1291  * @mad_flags: MAD flags
1292  * @port_num: the port number this packet came in on
1293  * @in_wc: the work completion entry for this packet
1294  * @in_grh: the global route header for this packet
1295  * @in_mad: the incoming MAD
1296  * @out_mad: any outgoing MAD reply
1297  *
1298  * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
1299  * interested in processing.
1300  *
1301  * Note that the verbs framework has already done the MAD sanity checks,
1302  * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
1303  * MADs.
1304  *
1305  * This is called by the ib_mad module.
1306  */
1307 int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
1308                       struct ib_wc *in_wc, struct ib_grh *in_grh,
1309                       struct ib_mad *in_mad, struct ib_mad *out_mad)
1310 {
1311         struct ipath_ibdev *dev = to_idev(ibdev);
1312         int ret;
1313
1314         /*
1315          * Snapshot current HW counters to "clear" them.
1316          * This should be done when the driver is loaded except that for
1317          * some reason we get a zillion errors when brining up the link.
1318          */
1319         if (dev->rcv_errors == 0) {
1320                 struct ipath_layer_counters cntrs;
1321
1322                 ipath_layer_get_counters(to_idev(ibdev)->dd, &cntrs);
1323                 dev->rcv_errors++;
1324                 dev->n_symbol_error_counter = cntrs.symbol_error_counter;
1325                 dev->n_link_error_recovery_counter =
1326                         cntrs.link_error_recovery_counter;
1327                 dev->n_link_downed_counter = cntrs.link_downed_counter;
1328                 dev->n_port_rcv_errors = cntrs.port_rcv_errors + 1;
1329                 dev->n_port_rcv_remphys_errors =
1330                         cntrs.port_rcv_remphys_errors;
1331                 dev->n_port_xmit_discards = cntrs.port_xmit_discards;
1332                 dev->n_port_xmit_data = cntrs.port_xmit_data;
1333                 dev->n_port_rcv_data = cntrs.port_rcv_data;
1334                 dev->n_port_xmit_packets = cntrs.port_xmit_packets;
1335                 dev->n_port_rcv_packets = cntrs.port_rcv_packets;
1336         }
1337         switch (in_mad->mad_hdr.mgmt_class) {
1338         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
1339         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
1340                 ret = process_subn(ibdev, mad_flags, port_num,
1341                                    in_mad, out_mad);
1342                 goto bail;
1343         case IB_MGMT_CLASS_PERF_MGMT:
1344                 ret = process_perf(ibdev, port_num, in_mad, out_mad);
1345                 goto bail;
1346         default:
1347                 ret = IB_MAD_RESULT_SUCCESS;
1348         }
1349
1350 bail:
1351         return ret;
1352 }