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