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