drivers/infiniband/hw/hfi1/mad.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright(c) 2015-2018 Intel Corporation.
   4  */
   5
   6 #include <linux/net.h>
   7 #include <rdma/opa_addr.h>
   8 #define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \
   9                         / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16)))
  10
  11 #include "hfi.h"
  12 #include "mad.h"
  13 #include "trace.h"
  14 #include "qp.h"
  15 #include "vnic.h"
  16
  17 /* the reset value from the FM is supposed to be 0xffff, handle both */
  18 #define OPA_LINK_WIDTH_RESET_OLD 0x0fff
  19 #define OPA_LINK_WIDTH_RESET 0xffff
  20
  21 struct trap_node {
  22         struct list_head list;
  23         struct opa_mad_notice_attr data;
  24         __be64 tid;
  25         int len;
  26         u32 retry;
  27         u8 in_use;
  28         u8 repress;
  29 };
  30
  31 static int smp_length_check(u32 data_size, u32 request_len)
  32 {
  33         if (unlikely(request_len < data_size))
  34                 return -EINVAL;
  35
  36         return 0;
  37 }
  38
  39 static int reply(struct ib_mad_hdr *smp)
  40 {
  41         /*
  42          * The verbs framework will handle the directed/LID route
  43          * packet changes.
  44          */
  45         smp->method = IB_MGMT_METHOD_GET_RESP;
  46         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
  47                 smp->status |= IB_SMP_DIRECTION;
  48         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
  49 }
  50
  51 static inline void clear_opa_smp_data(struct opa_smp *smp)
  52 {
  53         void *data = opa_get_smp_data(smp);
  54         size_t size = opa_get_smp_data_size(smp);
  55
  56         memset(data, 0, size);
  57 }
  58
  59 static u16 hfi1_lookup_pkey_value(struct hfi1_ibport *ibp, int pkey_idx)
  60 {
  61         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
  62
  63         if (pkey_idx < ARRAY_SIZE(ppd->pkeys))
  64                 return ppd->pkeys[pkey_idx];
  65
  66         return 0;
  67 }
  68
  69 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port)
  70 {
  71         struct ib_event event;
  72
  73         event.event = IB_EVENT_PKEY_CHANGE;
  74         event.device = &dd->verbs_dev.rdi.ibdev;
  75         event.element.port_num = port;
  76         ib_dispatch_event(&event);
  77 }
  78
  79 /*
  80  * If the port is down, clean up all pending traps.  We need to be careful
  81  * with the given trap, because it may be queued.
  82  */
  83 static void cleanup_traps(struct hfi1_ibport *ibp, struct trap_node *trap)
  84 {
  85         struct trap_node *node, *q;
  86         unsigned long flags;
  87         struct list_head trap_list;
  88         int i;
  89
  90         for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
  91                 spin_lock_irqsave(&ibp->rvp.lock, flags);
  92                 list_replace_init(&ibp->rvp.trap_lists[i].list, &trap_list);
  93                 ibp->rvp.trap_lists[i].list_len = 0;
  94                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
  95
  96                 /*
  97                  * Remove all items from the list, freeing all the non-given
  98                  * traps.
  99                  */
 100                 list_for_each_entry_safe(node, q, &trap_list, list) {
 101                         list_del(&node->list);
 102                         if (node != trap)
 103                                 kfree(node);
 104                 }
 105         }
 106
 107         /*
 108          * If this wasn't on one of the lists it would not be freed.  If it
 109          * was on the list, it is now safe to free.
 110          */
 111         kfree(trap);
 112 }
 113
 114 static struct trap_node *check_and_add_trap(struct hfi1_ibport *ibp,
 115                                             struct trap_node *trap)
 116 {
 117         struct trap_node *node;
 118         struct trap_list *trap_list;
 119         unsigned long flags;
 120         unsigned long timeout;
 121         int found = 0;
 122         unsigned int queue_id;
 123         static int trap_count;
 124
 125         queue_id = trap->data.generic_type & 0x0F;
 126         if (queue_id >= RVT_MAX_TRAP_LISTS) {
 127                 trap_count++;
 128                 pr_err_ratelimited("hfi1: Invalid trap 0x%0x dropped. Total dropped: %d\n",
 129                                    trap->data.generic_type, trap_count);
 130                 kfree(trap);
 131                 return NULL;
 132         }
 133
 134         /*
 135          * Since the retry (handle timeout) does not remove a trap request
 136          * from the list, all we have to do is compare the node.
 137          */
 138         spin_lock_irqsave(&ibp->rvp.lock, flags);
 139         trap_list = &ibp->rvp.trap_lists[queue_id];
 140
 141         list_for_each_entry(node, &trap_list->list, list) {
 142                 if (node == trap) {
 143                         node->retry++;
 144                         found = 1;
 145                         break;
 146                 }
 147         }
 148
 149         /* If it is not on the list, add it, limited to RVT-MAX_TRAP_LEN. */
 150         if (!found) {
 151                 if (trap_list->list_len < RVT_MAX_TRAP_LEN) {
 152                         trap_list->list_len++;
 153                         list_add_tail(&trap->list, &trap_list->list);
 154                 } else {
 155                         pr_warn_ratelimited("hfi1: Maximum trap limit reached for 0x%0x traps\n",
 156                                             trap->data.generic_type);
 157                         kfree(trap);
 158                 }
 159         }
 160
 161         /*
 162          * Next check to see if there is a timer pending.  If not, set it up
 163          * and get the first trap from the list.
 164          */
 165         node = NULL;
 166         if (!timer_pending(&ibp->rvp.trap_timer)) {
 167                 /*
 168                  * o14-2
 169                  * If the time out is set we have to wait until it expires
 170                  * before the trap can be sent.
 171                  * This should be > RVT_TRAP_TIMEOUT
 172                  */
 173                 timeout = (RVT_TRAP_TIMEOUT *
 174                            (1UL << ibp->rvp.subnet_timeout)) / 1000;
 175                 mod_timer(&ibp->rvp.trap_timer,
 176                           jiffies + usecs_to_jiffies(timeout));
 177                 node = list_first_entry(&trap_list->list, struct trap_node,
 178                                         list);
 179                 node->in_use = 1;
 180         }
 181         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 182
 183         return node;
 184 }
 185
 186 static void subn_handle_opa_trap_repress(struct hfi1_ibport *ibp,
 187                                          struct opa_smp *smp)
 188 {
 189         struct trap_list *trap_list;
 190         struct trap_node *trap;
 191         unsigned long flags;
 192         int i;
 193
 194         if (smp->attr_id != IB_SMP_ATTR_NOTICE)
 195                 return;
 196
 197         spin_lock_irqsave(&ibp->rvp.lock, flags);
 198         for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
 199                 trap_list = &ibp->rvp.trap_lists[i];
 200                 trap = list_first_entry_or_null(&trap_list->list,
 201                                                 struct trap_node, list);
 202                 if (trap && trap->tid == smp->tid) {
 203                         if (trap->in_use) {
 204                                 trap->repress = 1;
 205                         } else {
 206                                 trap_list->list_len--;
 207                                 list_del(&trap->list);
 208                                 kfree(trap);
 209                         }
 210                         break;
 211                 }
 212         }
 213         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 214 }
 215
 216 static void hfi1_update_sm_ah_attr(struct hfi1_ibport *ibp,
 217                                    struct rdma_ah_attr *attr, u32 dlid)
 218 {
 219         rdma_ah_set_dlid(attr, dlid);
 220         rdma_ah_set_port_num(attr, ppd_from_ibp(ibp)->port);
 221         if (dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
 222                 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
 223
 224                 rdma_ah_set_ah_flags(attr, IB_AH_GRH);
 225                 grh->sgid_index = 0;
 226                 grh->hop_limit = 1;
 227                 grh->dgid.global.subnet_prefix =
 228                         ibp->rvp.gid_prefix;
 229                 grh->dgid.global.interface_id = OPA_MAKE_ID(dlid);
 230         }
 231 }
 232
 233 static int hfi1_modify_qp0_ah(struct hfi1_ibport *ibp,
 234                               struct rvt_ah *ah, u32 dlid)
 235 {
 236         struct rdma_ah_attr attr;
 237         struct rvt_qp *qp0;
 238         int ret = -EINVAL;
 239
 240         memset(&attr, 0, sizeof(attr));
 241         attr.type = ah->ibah.type;
 242         hfi1_update_sm_ah_attr(ibp, &attr, dlid);
 243         rcu_read_lock();
 244         qp0 = rcu_dereference(ibp->rvp.qp[0]);
 245         if (qp0)
 246                 ret = rdma_modify_ah(&ah->ibah, &attr);
 247         rcu_read_unlock();
 248         return ret;
 249 }
 250
 251 static struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u32 dlid)
 252 {
 253         struct rdma_ah_attr attr;
 254         struct ib_ah *ah = ERR_PTR(-EINVAL);
 255         struct rvt_qp *qp0;
 256         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
 257         struct hfi1_devdata *dd = dd_from_ppd(ppd);
 258         u32 port_num = ppd->port;
 259
 260         memset(&attr, 0, sizeof(attr));
 261         attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num);
 262         hfi1_update_sm_ah_attr(ibp, &attr, dlid);
 263         rcu_read_lock();
 264         qp0 = rcu_dereference(ibp->rvp.qp[0]);
 265         if (qp0)
 266                 ah = rdma_create_ah(qp0->ibqp.pd, &attr, 0);
 267         rcu_read_unlock();
 268         return ah;
 269 }
 270
 271 static void send_trap(struct hfi1_ibport *ibp, struct trap_node *trap)
 272 {
 273         struct ib_mad_send_buf *send_buf;
 274         struct ib_mad_agent *agent;
 275         struct opa_smp *smp;
 276         unsigned long flags;
 277         int pkey_idx;
 278         u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
 279
 280         agent = ibp->rvp.send_agent;
 281         if (!agent) {
 282                 cleanup_traps(ibp, trap);
 283                 return;
 284         }
 285
 286         /* o14-3.2.1 */
 287         if (driver_lstate(ppd_from_ibp(ibp)) != IB_PORT_ACTIVE) {
 288                 cleanup_traps(ibp, trap);
 289                 return;
 290         }
 291
 292         /* Add the trap to the list if necessary and see if we can send it */
 293         trap = check_and_add_trap(ibp, trap);
 294         if (!trap)
 295                 return;
 296
 297         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
 298         if (pkey_idx < 0) {
 299                 pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
 300                         __func__, hfi1_get_pkey(ibp, 1));
 301                 pkey_idx = 1;
 302         }
 303
 304         send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
 305                                       IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
 306                                       GFP_ATOMIC, IB_MGMT_BASE_VERSION);
 307         if (IS_ERR(send_buf))
 308                 return;
 309
 310         smp = send_buf->mad;
 311         smp->base_version = OPA_MGMT_BASE_VERSION;
 312         smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
 313         smp->class_version = OPA_SM_CLASS_VERSION;
 314         smp->method = IB_MGMT_METHOD_TRAP;
 315
 316         /* Only update the transaction ID for new traps (o13-5). */
 317         if (trap->tid == 0) {
 318                 ibp->rvp.tid++;
 319                 /* make sure that tid != 0 */
 320                 if (ibp->rvp.tid == 0)
 321                         ibp->rvp.tid++;
 322                 trap->tid = cpu_to_be64(ibp->rvp.tid);
 323         }
 324         smp->tid = trap->tid;
 325
 326         smp->attr_id = IB_SMP_ATTR_NOTICE;
 327         /* o14-1: smp->mkey = 0; */
 328
 329         memcpy(smp->route.lid.data, &trap->data, trap->len);
 330
 331         spin_lock_irqsave(&ibp->rvp.lock, flags);
 332         if (!ibp->rvp.sm_ah) {
 333                 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
 334                         struct ib_ah *ah;
 335
 336                         ah = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid);
 337                         if (IS_ERR(ah)) {
 338                                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 339                                 return;
 340                         }
 341                         send_buf->ah = ah;
 342                         ibp->rvp.sm_ah = ibah_to_rvtah(ah);
 343                 } else {
 344                         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 345                         return;
 346                 }
 347         } else {
 348                 send_buf->ah = &ibp->rvp.sm_ah->ibah;
 349         }
 350
 351         /*
 352          * If the trap was repressed while things were getting set up, don't
 353          * bother sending it. This could happen for a retry.
 354          */
 355         if (trap->repress) {
 356                 list_del(&trap->list);
 357                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 358                 kfree(trap);
 359                 ib_free_send_mad(send_buf);
 360                 return;
 361         }
 362
 363         trap->in_use = 0;
 364         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 365
 366         if (ib_post_send_mad(send_buf, NULL))
 367                 ib_free_send_mad(send_buf);
 368 }
 369
 370 void hfi1_handle_trap_timer(struct timer_list *t)
 371 {
 372         struct hfi1_ibport *ibp = from_timer(ibp, t, rvp.trap_timer);
 373         struct trap_node *trap = NULL;
 374         unsigned long flags;
 375         int i;
 376
 377         /* Find the trap with the highest priority */
 378         spin_lock_irqsave(&ibp->rvp.lock, flags);
 379         for (i = 0; !trap && i < RVT_MAX_TRAP_LISTS; i++) {
 380                 trap = list_first_entry_or_null(&ibp->rvp.trap_lists[i].list,
 381                                                 struct trap_node, list);
 382         }
 383         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 384
 385         if (trap)
 386                 send_trap(ibp, trap);
 387 }
 388
 389 static struct trap_node *create_trap_node(u8 type, __be16 trap_num, u32 lid)
 390 {
 391         struct trap_node *trap;
 392
 393         trap = kzalloc(sizeof(*trap), GFP_ATOMIC);
 394         if (!trap)
 395                 return NULL;
 396
 397         INIT_LIST_HEAD(&trap->list);
 398         trap->data.generic_type = type;
 399         trap->data.prod_type_lsb = IB_NOTICE_PROD_CA;
 400         trap->data.trap_num = trap_num;
 401         trap->data.issuer_lid = cpu_to_be32(lid);
 402
 403         return trap;
 404 }
 405
 406 /*
 407  * Send a bad P_Key trap (ch. 14.3.8).
 408  */
 409 void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
 410                    u32 qp1, u32 qp2, u32 lid1, u32 lid2)
 411 {
 412         struct trap_node *trap;
 413         u32 lid = ppd_from_ibp(ibp)->lid;
 414
 415         ibp->rvp.n_pkt_drops++;
 416         ibp->rvp.pkey_violations++;
 417
 418         trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_P_KEY,
 419                                 lid);
 420         if (!trap)
 421                 return;
 422
 423         /* Send violation trap */
 424         trap->data.ntc_257_258.lid1 = cpu_to_be32(lid1);
 425         trap->data.ntc_257_258.lid2 = cpu_to_be32(lid2);
 426         trap->data.ntc_257_258.key = cpu_to_be32(key);
 427         trap->data.ntc_257_258.sl = sl << 3;
 428         trap->data.ntc_257_258.qp1 = cpu_to_be32(qp1);
 429         trap->data.ntc_257_258.qp2 = cpu_to_be32(qp2);
 430
 431         trap->len = sizeof(trap->data);
 432         send_trap(ibp, trap);
 433 }
 434
 435 /*
 436  * Send a bad M_Key trap (ch. 14.3.9).
 437  */
 438 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 439                      __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
 440 {
 441         struct trap_node *trap;
 442         u32 lid = ppd_from_ibp(ibp)->lid;
 443
 444         trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_M_KEY,
 445                                 lid);
 446         if (!trap)
 447                 return;
 448
 449         /* Send violation trap */
 450         trap->data.ntc_256.lid = trap->data.issuer_lid;
 451         trap->data.ntc_256.method = mad->method;
 452         trap->data.ntc_256.attr_id = mad->attr_id;
 453         trap->data.ntc_256.attr_mod = mad->attr_mod;
 454         trap->data.ntc_256.mkey = mkey;
 455         if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
 456                 trap->data.ntc_256.dr_slid = dr_slid;
 457                 trap->data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
 458                 if (hop_cnt > ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path)) {
 459                         trap->data.ntc_256.dr_trunc_hop |=
 460                                 IB_NOTICE_TRAP_DR_TRUNC;
 461                         hop_cnt = ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path);
 462                 }
 463                 trap->data.ntc_256.dr_trunc_hop |= hop_cnt;
 464                 memcpy(trap->data.ntc_256.dr_rtn_path, return_path,
 465                        hop_cnt);
 466         }
 467
 468         trap->len = sizeof(trap->data);
 469
 470         send_trap(ibp, trap);
 471 }
 472
 473 /*
 474  * Send a Port Capability Mask Changed trap (ch. 14.3.11).
 475  */
 476 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num)
 477 {
 478         struct trap_node *trap;
 479         struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
 480         struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
 481         struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
 482         u32 lid = ppd_from_ibp(ibp)->lid;
 483
 484         trap = create_trap_node(IB_NOTICE_TYPE_INFO,
 485                                 OPA_TRAP_CHANGE_CAPABILITY,
 486                                 lid);
 487         if (!trap)
 488                 return;
 489
 490         trap->data.ntc_144.lid = trap->data.issuer_lid;
 491         trap->data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 492         trap->data.ntc_144.cap_mask3 = cpu_to_be16(ibp->rvp.port_cap3_flags);
 493
 494         trap->len = sizeof(trap->data);
 495         send_trap(ibp, trap);
 496 }
 497
 498 /*
 499  * Send a System Image GUID Changed trap (ch. 14.3.12).
 500  */
 501 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
 502 {
 503         struct trap_node *trap;
 504         u32 lid = ppd_from_ibp(ibp)->lid;
 505
 506         trap = create_trap_node(IB_NOTICE_TYPE_INFO, OPA_TRAP_CHANGE_SYSGUID,
 507                                 lid);
 508         if (!trap)
 509                 return;
 510
 511         trap->data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
 512         trap->data.ntc_145.lid = trap->data.issuer_lid;
 513
 514         trap->len = sizeof(trap->data);
 515         send_trap(ibp, trap);
 516 }
 517
 518 /*
 519  * Send a Node Description Changed trap (ch. 14.3.13).
 520  */
 521 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
 522 {
 523         struct trap_node *trap;
 524         u32 lid = ppd_from_ibp(ibp)->lid;
 525
 526         trap = create_trap_node(IB_NOTICE_TYPE_INFO,
 527                                 OPA_TRAP_CHANGE_CAPABILITY,
 528                                 lid);
 529         if (!trap)
 530                 return;
 531
 532         trap->data.ntc_144.lid = trap->data.issuer_lid;
 533         trap->data.ntc_144.change_flags =
 534                 cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
 535
 536         trap->len = sizeof(trap->data);
 537         send_trap(ibp, trap);
 538 }
 539
 540 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
 541                                    u8 *data, struct ib_device *ibdev,
 542                                    u32 port, u32 *resp_len, u32 max_len)
 543 {
 544         struct opa_node_description *nd;
 545
 546         if (am || smp_length_check(sizeof(*nd), max_len)) {
 547                 smp->status |= IB_SMP_INVALID_FIELD;
 548                 return reply((struct ib_mad_hdr *)smp);
 549         }
 550
 551         nd = (struct opa_node_description *)data;
 552
 553         memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
 554
 555         if (resp_len)
 556                 *resp_len += sizeof(*nd);
 557
 558         return reply((struct ib_mad_hdr *)smp);
 559 }
 560
 561 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
 562                                    struct ib_device *ibdev, u32 port,
 563                                    u32 *resp_len, u32 max_len)
 564 {
 565         struct opa_node_info *ni;
 566         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 567         u32 pidx = port - 1; /* IB number port from 1, hw from 0 */
 568
 569         ni = (struct opa_node_info *)data;
 570
 571         /* GUID 0 is illegal */
 572         if (am || pidx >= dd->num_pports || ibdev->node_guid == 0 ||
 573             smp_length_check(sizeof(*ni), max_len) ||
 574             get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
 575                 smp->status |= IB_SMP_INVALID_FIELD;
 576                 return reply((struct ib_mad_hdr *)smp);
 577         }
 578
 579         ni->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
 580         ni->base_version = OPA_MGMT_BASE_VERSION;
 581         ni->class_version = OPA_SM_CLASS_VERSION;
 582         ni->node_type = 1;     /* channel adapter */
 583         ni->num_ports = ibdev->phys_port_cnt;
 584         /* This is already in network order */
 585         ni->system_image_guid = ib_hfi1_sys_image_guid;
 586         ni->node_guid = ibdev->node_guid;
 587         ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 588         ni->device_id = cpu_to_be16(dd->pcidev->device);
 589         ni->revision = cpu_to_be32(dd->minrev);
 590         ni->local_port_num = port;
 591         ni->vendor_id[0] = dd->oui1;
 592         ni->vendor_id[1] = dd->oui2;
 593         ni->vendor_id[2] = dd->oui3;
 594
 595         if (resp_len)
 596                 *resp_len += sizeof(*ni);
 597
 598         return reply((struct ib_mad_hdr *)smp);
 599 }
 600
 601 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
 602                              u32 port)
 603 {
 604         struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
 605         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 606         u32 pidx = port - 1; /* IB number port from 1, hw from 0 */
 607
 608         /* GUID 0 is illegal */
 609         if (smp->attr_mod || pidx >= dd->num_pports ||
 610             ibdev->node_guid == 0 ||
 611             get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
 612                 smp->status |= IB_SMP_INVALID_FIELD;
 613                 return reply((struct ib_mad_hdr *)smp);
 614         }
 615
 616         nip->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
 617         nip->base_version = OPA_MGMT_BASE_VERSION;
 618         nip->class_version = OPA_SM_CLASS_VERSION;
 619         nip->node_type = 1;     /* channel adapter */
 620         nip->num_ports = ibdev->phys_port_cnt;
 621         /* This is already in network order */
 622         nip->sys_guid = ib_hfi1_sys_image_guid;
 623         nip->node_guid = ibdev->node_guid;
 624         nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 625         nip->device_id = cpu_to_be16(dd->pcidev->device);
 626         nip->revision = cpu_to_be32(dd->minrev);
 627         nip->local_port_num = port;
 628         nip->vendor_id[0] = dd->oui1;
 629         nip->vendor_id[1] = dd->oui2;
 630         nip->vendor_id[2] = dd->oui3;
 631
 632         return reply((struct ib_mad_hdr *)smp);
 633 }
 634
 635 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
 636 {
 637         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
 638 }
 639
 640 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
 641 {
 642         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
 643 }
 644
 645 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
 646 {
 647         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
 648 }
 649
 650 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 651                       int mad_flags, __be64 mkey, __be32 dr_slid,
 652                       u8 return_path[], u8 hop_cnt)
 653 {
 654         int valid_mkey = 0;
 655         int ret = 0;
 656
 657         /* Is the mkey in the process of expiring? */
 658         if (ibp->rvp.mkey_lease_timeout &&
 659             time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
 660                 /* Clear timeout and mkey protection field. */
 661                 ibp->rvp.mkey_lease_timeout = 0;
 662                 ibp->rvp.mkeyprot = 0;
 663         }
 664
 665         if ((mad_flags & IB_MAD_IGNORE_MKEY) ||  ibp->rvp.mkey == 0 ||
 666             ibp->rvp.mkey == mkey)
 667                 valid_mkey = 1;
 668
 669         /* Unset lease timeout on any valid Get/Set/TrapRepress */
 670         if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
 671             (mad->method == IB_MGMT_METHOD_GET ||
 672              mad->method == IB_MGMT_METHOD_SET ||
 673              mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
 674                 ibp->rvp.mkey_lease_timeout = 0;
 675
 676         if (!valid_mkey) {
 677                 switch (mad->method) {
 678                 case IB_MGMT_METHOD_GET:
 679                         /* Bad mkey not a violation below level 2 */
 680                         if (ibp->rvp.mkeyprot < 2)
 681                                 break;
 682                         fallthrough;
 683                 case IB_MGMT_METHOD_SET:
 684                 case IB_MGMT_METHOD_TRAP_REPRESS:
 685                         if (ibp->rvp.mkey_violations != 0xFFFF)
 686                                 ++ibp->rvp.mkey_violations;
 687                         if (!ibp->rvp.mkey_lease_timeout &&
 688                             ibp->rvp.mkey_lease_period)
 689                                 ibp->rvp.mkey_lease_timeout = jiffies +
 690                                         ibp->rvp.mkey_lease_period * HZ;
 691                         /* Generate a trap notice. */
 692                         bad_mkey(ibp, mad, mkey, dr_slid, return_path,
 693                                  hop_cnt);
 694                         ret = 1;
 695                 }
 696         }
 697
 698         return ret;
 699 }
 700
 701 /*
 702  * The SMA caches reads from LCB registers in case the LCB is unavailable.
 703  * (The LCB is unavailable in certain link states, for example.)
 704  */
 705 struct lcb_datum {
 706         u32 off;
 707         u64 val;
 708 };
 709
 710 static struct lcb_datum lcb_cache[] = {
 711         { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
 712 };
 713
 714 static int write_lcb_cache(u32 off, u64 val)
 715 {
 716         int i;
 717
 718         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 719                 if (lcb_cache[i].off == off) {
 720                         lcb_cache[i].val = val;
 721                         return 0;
 722                 }
 723         }
 724
 725         pr_warn("%s bad offset 0x%x\n", __func__, off);
 726         return -1;
 727 }
 728
 729 static int read_lcb_cache(u32 off, u64 *val)
 730 {
 731         int i;
 732
 733         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 734                 if (lcb_cache[i].off == off) {
 735                         *val = lcb_cache[i].val;
 736                         return 0;
 737                 }
 738         }
 739
 740         pr_warn("%s bad offset 0x%x\n", __func__, off);
 741         return -1;
 742 }
 743
 744 void read_ltp_rtt(struct hfi1_devdata *dd)
 745 {
 746         u64 reg;
 747
 748         if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
 749                 dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
 750         else
 751                 write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
 752 }
 753
 754 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
 755                                    struct ib_device *ibdev, u32 port,
 756                                    u32 *resp_len, u32 max_len)
 757 {
 758         int i;
 759         struct hfi1_devdata *dd;
 760         struct hfi1_pportdata *ppd;
 761         struct hfi1_ibport *ibp;
 762         struct opa_port_info *pi = (struct opa_port_info *)data;
 763         u8 mtu;
 764         u8 credit_rate;
 765         u8 is_beaconing_active;
 766         u32 state;
 767         u32 num_ports = OPA_AM_NPORT(am);
 768         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
 769         u32 buffer_units;
 770         u64 tmp = 0;
 771
 772         if (num_ports != 1 || smp_length_check(sizeof(*pi), max_len)) {
 773                 smp->status |= IB_SMP_INVALID_FIELD;
 774                 return reply((struct ib_mad_hdr *)smp);
 775         }
 776
 777         dd = dd_from_ibdev(ibdev);
 778         /* IB numbers ports from 1, hw from 0 */
 779         ppd = dd->pport + (port - 1);
 780         ibp = &ppd->ibport_data;
 781
 782         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
 783             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
 784                 smp->status |= IB_SMP_INVALID_FIELD;
 785                 return reply((struct ib_mad_hdr *)smp);
 786         }
 787
 788         pi->lid = cpu_to_be32(ppd->lid);
 789
 790         /* Only return the mkey if the protection field allows it. */
 791         if (!(smp->method == IB_MGMT_METHOD_GET &&
 792               ibp->rvp.mkey != smp->mkey &&
 793               ibp->rvp.mkeyprot == 1))
 794                 pi->mkey = ibp->rvp.mkey;
 795
 796         pi->subnet_prefix = ibp->rvp.gid_prefix;
 797         pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid);
 798         pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 799         pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
 800         pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
 801         pi->sa_qp = cpu_to_be32(ppd->sa_qp);
 802
 803         pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
 804         pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
 805         pi->link_width.active = cpu_to_be16(ppd->link_width_active);
 806
 807         pi->link_width_downgrade.supported =
 808                         cpu_to_be16(ppd->link_width_downgrade_supported);
 809         pi->link_width_downgrade.enabled =
 810                         cpu_to_be16(ppd->link_width_downgrade_enabled);
 811         pi->link_width_downgrade.tx_active =
 812                         cpu_to_be16(ppd->link_width_downgrade_tx_active);
 813         pi->link_width_downgrade.rx_active =
 814                         cpu_to_be16(ppd->link_width_downgrade_rx_active);
 815
 816         pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
 817         pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
 818         pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
 819
 820         state = driver_lstate(ppd);
 821
 822         if (start_of_sm_config && (state == IB_PORT_INIT))
 823                 ppd->is_sm_config_started = 1;
 824
 825         pi->port_phys_conf = (ppd->port_type & 0xf);
 826
 827         pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
 828         pi->port_states.ledenable_offlinereason |=
 829                 ppd->is_sm_config_started << 5;
 830         /*
 831          * This pairs with the memory barrier in hfi1_start_led_override to
 832          * ensure that we read the correct state of LED beaconing represented
 833          * by led_override_timer_active
 834          */
 835         smp_rmb();
 836         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
 837         pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
 838         pi->port_states.ledenable_offlinereason |=
 839                 ppd->offline_disabled_reason;
 840
 841         pi->port_states.portphysstate_portstate =
 842                 (driver_pstate(ppd) << 4) | state;
 843
 844         pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
 845
 846         memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
 847         for (i = 0; i < ppd->vls_supported; i++) {
 848                 mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
 849                 if ((i % 2) == 0)
 850                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4);
 851                 else
 852                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu;
 853         }
 854         /* don't forget VL 15 */
 855         mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
 856         pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu;
 857         pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL;
 858         pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
 859         pi->partenforce_filterraw |=
 860                 (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
 861         if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
 862                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
 863         if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
 864                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
 865         pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
 866         /* P_KeyViolations are counted by hardware. */
 867         pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
 868         pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
 869
 870         pi->vl.cap = ppd->vls_supported;
 871         pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit);
 872         pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
 873         pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
 874
 875         pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout;
 876
 877         pi->port_link_mode  = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
 878                                           OPA_PORT_LINK_MODE_OPA << 5 |
 879                                           OPA_PORT_LINK_MODE_OPA);
 880
 881         pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
 882
 883         pi->port_mode = cpu_to_be16(
 884                                 ppd->is_active_optimize_enabled ?
 885                                         OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
 886
 887         pi->port_packet_format.supported =
 888                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
 889                             OPA_PORT_PACKET_FORMAT_16B);
 890         pi->port_packet_format.enabled =
 891                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
 892                             OPA_PORT_PACKET_FORMAT_16B);
 893
 894         /* flit_control.interleave is (OPA V1, version .76):
 895          * bits         use
 896          * ----         ---
 897          * 2            res
 898          * 2            DistanceSupported
 899          * 2            DistanceEnabled
 900          * 5            MaxNextLevelTxEnabled
 901          * 5            MaxNestLevelRxSupported
 902          *
 903          * HFI supports only "distance mode 1" (see OPA V1, version .76,
 904          * section 9.6.2), so set DistanceSupported, DistanceEnabled
 905          * to 0x1.
 906          */
 907         pi->flit_control.interleave = cpu_to_be16(0x1400);
 908
 909         pi->link_down_reason = ppd->local_link_down_reason.sma;
 910         pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
 911         pi->port_error_action = cpu_to_be32(ppd->port_error_action);
 912         pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
 913
 914         /* 32.768 usec. response time (guessing) */
 915         pi->resptimevalue = 3;
 916
 917         pi->local_port_num = port;
 918
 919         /* buffer info for FM */
 920         pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
 921
 922         pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
 923         pi->neigh_port_num = ppd->neighbor_port_number;
 924         pi->port_neigh_mode =
 925                 (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
 926                 (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
 927                 (ppd->neighbor_fm_security ?
 928                         OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
 929
 930         /* HFIs shall always return VL15 credits to their
 931          * neighbor in a timely manner, without any credit return pacing.
 932          */
 933         credit_rate = 0;
 934         buffer_units  = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
 935         buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
 936         buffer_units |= (credit_rate << 6) &
 937                                 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
 938         buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
 939         pi->buffer_units = cpu_to_be32(buffer_units);
 940
 941         pi->opa_cap_mask = cpu_to_be16(ibp->rvp.port_cap3_flags);
 942         pi->collectivemask_multicastmask = ((OPA_COLLECTIVE_NR & 0x7)
 943                                             << 3 | (OPA_MCAST_NR & 0x7));
 944
 945         /* HFI supports a replay buffer 128 LTPs in size */
 946         pi->replay_depth.buffer = 0x80;
 947         /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
 948         read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
 949
 950         /*
 951          * this counter is 16 bits wide, but the replay_depth.wire
 952          * variable is only 8 bits
 953          */
 954         if (tmp > 0xff)
 955                 tmp = 0xff;
 956         pi->replay_depth.wire = tmp;
 957
 958         if (resp_len)
 959                 *resp_len += sizeof(struct opa_port_info);
 960
 961         return reply((struct ib_mad_hdr *)smp);
 962 }
 963
 964 /**
 965  * get_pkeys - return the PKEY table
 966  * @dd: the hfi1_ib device
 967  * @port: the IB port number
 968  * @pkeys: the pkey table is placed here
 969  */
 970 static int get_pkeys(struct hfi1_devdata *dd, u32 port, u16 *pkeys)
 971 {
 972         struct hfi1_pportdata *ppd = dd->pport + port - 1;
 973
 974         memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
 975
 976         return 0;
 977 }
 978
 979 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
 980                                     struct ib_device *ibdev, u32 port,
 981                                     u32 *resp_len, u32 max_len)
 982 {
 983         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 984         u32 n_blocks_req = OPA_AM_NBLK(am);
 985         u32 start_block = am & 0x7ff;
 986         __be16 *p;
 987         u16 *q;
 988         int i;
 989         u16 n_blocks_avail;
 990         unsigned npkeys = hfi1_get_npkeys(dd);
 991         size_t size;
 992
 993         if (n_blocks_req == 0) {
 994                 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
 995                         port, start_block, n_blocks_req);
 996                 smp->status |= IB_SMP_INVALID_FIELD;
 997                 return reply((struct ib_mad_hdr *)smp);
 998         }
 999
1000         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1001
1002         size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16);
1003
1004         if (smp_length_check(size, max_len)) {
1005                 smp->status |= IB_SMP_INVALID_FIELD;
1006                 return reply((struct ib_mad_hdr *)smp);
1007         }
1008
1009         if (start_block + n_blocks_req > n_blocks_avail ||
1010             n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1011                 pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; "
1012                         "avail 0x%x; blk/smp 0x%lx\n",
1013                         start_block, n_blocks_req, n_blocks_avail,
1014                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
1015                 smp->status |= IB_SMP_INVALID_FIELD;
1016                 return reply((struct ib_mad_hdr *)smp);
1017         }
1018
1019         p = (__be16 *)data;
1020         q = (u16 *)data;
1021         /* get the real pkeys if we are requesting the first block */
1022         if (start_block == 0) {
1023                 get_pkeys(dd, port, q);
1024                 for (i = 0; i < npkeys; i++)
1025                         p[i] = cpu_to_be16(q[i]);
1026                 if (resp_len)
1027                         *resp_len += size;
1028         } else {
1029                 smp->status |= IB_SMP_INVALID_FIELD;
1030         }
1031         return reply((struct ib_mad_hdr *)smp);
1032 }
1033
1034 enum {
1035         HFI_TRANSITION_DISALLOWED,
1036         HFI_TRANSITION_IGNORED,
1037         HFI_TRANSITION_ALLOWED,
1038         HFI_TRANSITION_UNDEFINED,
1039 };
1040
1041 /*
1042  * Use shortened names to improve readability of
1043  * {logical,physical}_state_transitions
1044  */
1045 enum {
1046         __D = HFI_TRANSITION_DISALLOWED,
1047         __I = HFI_TRANSITION_IGNORED,
1048         __A = HFI_TRANSITION_ALLOWED,
1049         __U = HFI_TRANSITION_UNDEFINED,
1050 };
1051
1052 /*
1053  * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are
1054  * represented in physical_state_transitions.
1055  */
1056 #define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1)
1057
1058 /*
1059  * Within physical_state_transitions, rows represent "old" states,
1060  * columns "new" states, and physical_state_transitions.allowed[old][new]
1061  * indicates if the transition from old state to new state is legal (see
1062  * OPAg1v1, Table 6-4).
1063  */
1064 static const struct {
1065         u8 allowed[__N_PHYSTATES][__N_PHYSTATES];
1066 } physical_state_transitions = {
1067         {
1068                 /* 2    3    4    5    6    7    8    9   10   11 */
1069         /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D },
1070         /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A },
1071         /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1072         /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D },
1073         /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1074         /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D },
1075         /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1076         /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D },
1077         /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
1078         /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I },
1079         }
1080 };
1081
1082 /*
1083  * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented
1084  * logical_state_transitions
1085  */
1086
1087 #define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1)
1088
1089 /*
1090  * Within logical_state_transitions rows represent "old" states,
1091  * columns "new" states, and logical_state_transitions.allowed[old][new]
1092  * indicates if the transition from old state to new state is legal (see
1093  * OPAg1v1, Table 9-12).
1094  */
1095 static const struct {
1096         u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES];
1097 } logical_state_transitions = {
1098         {
1099                 /* 1    2    3    4    5 */
1100         /* 1 */ { __I, __D, __D, __D, __U},
1101         /* 2 */ { __D, __I, __A, __D, __U},
1102         /* 3 */ { __D, __D, __I, __A, __U},
1103         /* 4 */ { __D, __D, __I, __I, __U},
1104         /* 5 */ { __U, __U, __U, __U, __U},
1105         }
1106 };
1107
1108 static int logical_transition_allowed(int old, int new)
1109 {
1110         if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER ||
1111             new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) {
1112                 pr_warn("invalid logical state(s) (old %d new %d)\n",
1113                         old, new);
1114                 return HFI_TRANSITION_UNDEFINED;
1115         }
1116
1117         if (new == IB_PORT_NOP)
1118                 return HFI_TRANSITION_ALLOWED; /* always allowed */
1119
1120         /* adjust states for indexing into logical_state_transitions */
1121         old -= IB_PORT_DOWN;
1122         new -= IB_PORT_DOWN;
1123
1124         if (old < 0 || new < 0)
1125                 return HFI_TRANSITION_UNDEFINED;
1126         return logical_state_transitions.allowed[old][new];
1127 }
1128
1129 static int physical_transition_allowed(int old, int new)
1130 {
1131         if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX ||
1132             new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) {
1133                 pr_warn("invalid physical state(s) (old %d new %d)\n",
1134                         old, new);
1135                 return HFI_TRANSITION_UNDEFINED;
1136         }
1137
1138         if (new == IB_PORTPHYSSTATE_NOP)
1139                 return HFI_TRANSITION_ALLOWED; /* always allowed */
1140
1141         /* adjust states for indexing into physical_state_transitions */
1142         old -= IB_PORTPHYSSTATE_POLLING;
1143         new -= IB_PORTPHYSSTATE_POLLING;
1144
1145         if (old < 0 || new < 0)
1146                 return HFI_TRANSITION_UNDEFINED;
1147         return physical_state_transitions.allowed[old][new];
1148 }
1149
1150 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
1151                                           u32 logical_new, u32 physical_new)
1152 {
1153         u32 physical_old = driver_pstate(ppd);
1154         u32 logical_old = driver_lstate(ppd);
1155         int ret, logical_allowed, physical_allowed;
1156
1157         ret = logical_transition_allowed(logical_old, logical_new);
1158         logical_allowed = ret;
1159
1160         if (ret == HFI_TRANSITION_DISALLOWED ||
1161             ret == HFI_TRANSITION_UNDEFINED) {
1162                 pr_warn("invalid logical state transition %s -> %s\n",
1163                         opa_lstate_name(logical_old),
1164                         opa_lstate_name(logical_new));
1165                 return ret;
1166         }
1167
1168         ret = physical_transition_allowed(physical_old, physical_new);
1169         physical_allowed = ret;
1170
1171         if (ret == HFI_TRANSITION_DISALLOWED ||
1172             ret == HFI_TRANSITION_UNDEFINED) {
1173                 pr_warn("invalid physical state transition %s -> %s\n",
1174                         opa_pstate_name(physical_old),
1175                         opa_pstate_name(physical_new));
1176                 return ret;
1177         }
1178
1179         if (logical_allowed == HFI_TRANSITION_IGNORED &&
1180             physical_allowed == HFI_TRANSITION_IGNORED)
1181                 return HFI_TRANSITION_IGNORED;
1182
1183         /*
1184          * A change request of Physical Port State from
1185          * 'Offline' to 'Polling' should be ignored.
1186          */
1187         if ((physical_old == OPA_PORTPHYSSTATE_OFFLINE) &&
1188             (physical_new == IB_PORTPHYSSTATE_POLLING))
1189                 return HFI_TRANSITION_IGNORED;
1190
1191         /*
1192          * Either physical_allowed or logical_allowed is
1193          * HFI_TRANSITION_ALLOWED.
1194          */
1195         return HFI_TRANSITION_ALLOWED;
1196 }
1197
1198 static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
1199                            u32 logical_state, u32 phys_state, int local_mad)
1200 {
1201         struct hfi1_devdata *dd = ppd->dd;
1202         u32 link_state;
1203         int ret;
1204
1205         ret = port_states_transition_allowed(ppd, logical_state, phys_state);
1206         if (ret == HFI_TRANSITION_DISALLOWED ||
1207             ret == HFI_TRANSITION_UNDEFINED) {
1208                 /* error message emitted above */
1209                 smp->status |= IB_SMP_INVALID_FIELD;
1210                 return 0;
1211         }
1212
1213         if (ret == HFI_TRANSITION_IGNORED)
1214                 return 0;
1215
1216         if ((phys_state != IB_PORTPHYSSTATE_NOP) &&
1217             !(logical_state == IB_PORT_DOWN ||
1218               logical_state == IB_PORT_NOP)){
1219                 pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n",
1220                         logical_state, phys_state);
1221                 smp->status |= IB_SMP_INVALID_FIELD;
1222         }
1223
1224         /*
1225          * Logical state changes are summarized in OPAv1g1 spec.,
1226          * Table 9-12; physical state changes are summarized in
1227          * OPAv1g1 spec., Table 6.4.
1228          */
1229         switch (logical_state) {
1230         case IB_PORT_NOP:
1231                 if (phys_state == IB_PORTPHYSSTATE_NOP)
1232                         break;
1233                 fallthrough;
1234         case IB_PORT_DOWN:
1235                 if (phys_state == IB_PORTPHYSSTATE_NOP) {
1236                         link_state = HLS_DN_DOWNDEF;
1237                 } else if (phys_state == IB_PORTPHYSSTATE_POLLING) {
1238                         link_state = HLS_DN_POLL;
1239                         set_link_down_reason(ppd, OPA_LINKDOWN_REASON_FM_BOUNCE,
1240                                              0, OPA_LINKDOWN_REASON_FM_BOUNCE);
1241                 } else if (phys_state == IB_PORTPHYSSTATE_DISABLED) {
1242                         link_state = HLS_DN_DISABLE;
1243                 } else {
1244                         pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n",
1245                                 phys_state);
1246                         smp->status |= IB_SMP_INVALID_FIELD;
1247                         break;
1248                 }
1249
1250                 if ((link_state == HLS_DN_POLL ||
1251                      link_state == HLS_DN_DOWNDEF)) {
1252                         /*
1253                          * Going to poll.  No matter what the current state,
1254                          * always move offline first, then tune and start the
1255                          * link.  This correctly handles a FM link bounce and
1256                          * a link enable.  Going offline is a no-op if already
1257                          * offline.
1258                          */
1259                         set_link_state(ppd, HLS_DN_OFFLINE);
1260                         start_link(ppd);
1261                 } else {
1262                         set_link_state(ppd, link_state);
1263                 }
1264                 if (link_state == HLS_DN_DISABLE &&
1265                     (ppd->offline_disabled_reason >
1266                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
1267                      ppd->offline_disabled_reason ==
1268                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
1269                         ppd->offline_disabled_reason =
1270                         HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
1271                 /*
1272                  * Don't send a reply if the response would be sent
1273                  * through the disabled port.
1274                  */
1275                 if (link_state == HLS_DN_DISABLE && !local_mad)
1276                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1277                 break;
1278         case IB_PORT_ARMED:
1279                 ret = set_link_state(ppd, HLS_UP_ARMED);
1280                 if (!ret)
1281                         send_idle_sma(dd, SMA_IDLE_ARM);
1282                 break;
1283         case IB_PORT_ACTIVE:
1284                 if (ppd->neighbor_normal) {
1285                         ret = set_link_state(ppd, HLS_UP_ACTIVE);
1286                         if (ret == 0)
1287                                 send_idle_sma(dd, SMA_IDLE_ACTIVE);
1288                 } else {
1289                         pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
1290                         smp->status |= IB_SMP_INVALID_FIELD;
1291                 }
1292                 break;
1293         default:
1294                 pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
1295                         logical_state);
1296                 smp->status |= IB_SMP_INVALID_FIELD;
1297         }
1298
1299         return 0;
1300 }
1301
1302 /*
1303  * subn_set_opa_portinfo - set port information
1304  * @smp: the incoming SM packet
1305  * @ibdev: the infiniband device
1306  * @port: the port on the device
1307  *
1308  */
1309 static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
1310                                    struct ib_device *ibdev, u32 port,
1311                                    u32 *resp_len, u32 max_len, int local_mad)
1312 {
1313         struct opa_port_info *pi = (struct opa_port_info *)data;
1314         struct ib_event event;
1315         struct hfi1_devdata *dd;
1316         struct hfi1_pportdata *ppd;
1317         struct hfi1_ibport *ibp;
1318         u8 clientrereg;
1319         unsigned long flags;
1320         u32 smlid;
1321         u32 lid;
1322         u8 ls_old, ls_new, ps_new;
1323         u8 vls;
1324         u8 msl;
1325         u8 crc_enabled;
1326         u16 lse, lwe, mtu;
1327         u32 num_ports = OPA_AM_NPORT(am);
1328         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1329         int ret, i, invalid = 0, call_set_mtu = 0;
1330         int call_link_downgrade_policy = 0;
1331
1332         if (num_ports != 1 ||
1333             smp_length_check(sizeof(*pi), max_len)) {
1334                 smp->status |= IB_SMP_INVALID_FIELD;
1335                 return reply((struct ib_mad_hdr *)smp);
1336         }
1337
1338         lid = be32_to_cpu(pi->lid);
1339         if (lid & 0xFF000000) {
1340                 pr_warn("OPA_PortInfo lid out of range: %X\n", lid);
1341                 smp->status |= IB_SMP_INVALID_FIELD;
1342                 goto get_only;
1343         }
1344
1345
1346         smlid = be32_to_cpu(pi->sm_lid);
1347         if (smlid & 0xFF000000) {
1348                 pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid);
1349                 smp->status |= IB_SMP_INVALID_FIELD;
1350                 goto get_only;
1351         }
1352
1353         clientrereg = (pi->clientrereg_subnettimeout &
1354                         OPA_PI_MASK_CLIENT_REREGISTER);
1355
1356         dd = dd_from_ibdev(ibdev);
1357         /* IB numbers ports from 1, hw from 0 */
1358         ppd = dd->pport + (port - 1);
1359         ibp = &ppd->ibport_data;
1360         event.device = ibdev;
1361         event.element.port_num = port;
1362
1363         ls_old = driver_lstate(ppd);
1364
1365         ibp->rvp.mkey = pi->mkey;
1366         if (ibp->rvp.gid_prefix != pi->subnet_prefix) {
1367                 ibp->rvp.gid_prefix = pi->subnet_prefix;
1368                 event.event = IB_EVENT_GID_CHANGE;
1369                 ib_dispatch_event(&event);
1370         }
1371         ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
1372
1373         /* Must be a valid unicast LID address. */
1374         if ((lid == 0 && ls_old > IB_PORT_INIT) ||
1375              (hfi1_is_16B_mcast(lid))) {
1376                 smp->status |= IB_SMP_INVALID_FIELD;
1377                 pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n",
1378                         lid);
1379         } else if (ppd->lid != lid ||
1380                  ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) {
1381                 if (ppd->lid != lid)
1382                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT);
1383                 if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
1384                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT);
1385                 hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
1386                 event.event = IB_EVENT_LID_CHANGE;
1387                 ib_dispatch_event(&event);
1388
1389                 if (HFI1_PORT_GUID_INDEX + 1 < HFI1_GUIDS_PER_PORT) {
1390                         /* Manufacture GID from LID to support extended
1391                          * addresses
1392                          */
1393                         ppd->guids[HFI1_PORT_GUID_INDEX + 1] =
1394                                 be64_to_cpu(OPA_MAKE_ID(lid));
1395                         event.event = IB_EVENT_GID_CHANGE;
1396                         ib_dispatch_event(&event);
1397                 }
1398         }
1399
1400         msl = pi->smsl & OPA_PI_MASK_SMSL;
1401         if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON)
1402                 ppd->linkinit_reason =
1403                         (pi->partenforce_filterraw &
1404                          OPA_PI_MASK_LINKINIT_REASON);
1405
1406         /* Must be a valid unicast LID address. */
1407         if ((smlid == 0 && ls_old > IB_PORT_INIT) ||
1408              (hfi1_is_16B_mcast(smlid))) {
1409                 smp->status |= IB_SMP_INVALID_FIELD;
1410                 pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
1411         } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
1412                 pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid);
1413                 spin_lock_irqsave(&ibp->rvp.lock, flags);
1414                 if (ibp->rvp.sm_ah) {
1415                         if (smlid != ibp->rvp.sm_lid)
1416                                 hfi1_modify_qp0_ah(ibp, ibp->rvp.sm_ah, smlid);
1417                         if (msl != ibp->rvp.sm_sl)
1418                                 rdma_ah_set_sl(&ibp->rvp.sm_ah->attr, msl);
1419                 }
1420                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1421                 if (smlid != ibp->rvp.sm_lid)
1422                         ibp->rvp.sm_lid = smlid;
1423                 if (msl != ibp->rvp.sm_sl)
1424                         ibp->rvp.sm_sl = msl;
1425                 event.event = IB_EVENT_SM_CHANGE;
1426                 ib_dispatch_event(&event);
1427         }
1428
1429         if (pi->link_down_reason == 0) {
1430                 ppd->local_link_down_reason.sma = 0;
1431                 ppd->local_link_down_reason.latest = 0;
1432         }
1433
1434         if (pi->neigh_link_down_reason == 0) {
1435                 ppd->neigh_link_down_reason.sma = 0;
1436                 ppd->neigh_link_down_reason.latest = 0;
1437         }
1438
1439         ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp);
1440         ppd->sa_qp = be32_to_cpu(pi->sa_qp);
1441
1442         ppd->port_error_action = be32_to_cpu(pi->port_error_action);
1443         lwe = be16_to_cpu(pi->link_width.enabled);
1444         if (lwe) {
1445                 if (lwe == OPA_LINK_WIDTH_RESET ||
1446                     lwe == OPA_LINK_WIDTH_RESET_OLD)
1447                         set_link_width_enabled(ppd, ppd->link_width_supported);
1448                 else if ((lwe & ~ppd->link_width_supported) == 0)
1449                         set_link_width_enabled(ppd, lwe);
1450                 else
1451                         smp->status |= IB_SMP_INVALID_FIELD;
1452         }
1453         lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
1454         /* LWD.E is always applied - 0 means "disabled" */
1455         if (lwe == OPA_LINK_WIDTH_RESET ||
1456             lwe == OPA_LINK_WIDTH_RESET_OLD) {
1457                 set_link_width_downgrade_enabled(ppd,
1458                                                  ppd->
1459                                                  link_width_downgrade_supported
1460                                                  );
1461         } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) {
1462                 /* only set and apply if something changed */
1463                 if (lwe != ppd->link_width_downgrade_enabled) {
1464                         set_link_width_downgrade_enabled(ppd, lwe);
1465                         call_link_downgrade_policy = 1;
1466                 }
1467         } else {
1468                 smp->status |= IB_SMP_INVALID_FIELD;
1469         }
1470         lse = be16_to_cpu(pi->link_speed.enabled);
1471         if (lse) {
1472                 if (lse & be16_to_cpu(pi->link_speed.supported))
1473                         set_link_speed_enabled(ppd, lse);
1474                 else
1475                         smp->status |= IB_SMP_INVALID_FIELD;
1476         }
1477
1478         ibp->rvp.mkeyprot =
1479                 (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6;
1480         ibp->rvp.vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF;
1481         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT,
1482                                     ibp->rvp.vl_high_limit);
1483
1484         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
1485             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
1486                 smp->status |= IB_SMP_INVALID_FIELD;
1487                 return reply((struct ib_mad_hdr *)smp);
1488         }
1489         for (i = 0; i < ppd->vls_supported; i++) {
1490                 if ((i % 2) == 0)
1491                         mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i / 2] >>
1492                                            4) & 0xF);
1493                 else
1494                         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i / 2] &
1495                                           0xF);
1496                 if (mtu == 0xffff) {
1497                         pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n",
1498                                 mtu,
1499                                 (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
1500                         smp->status |= IB_SMP_INVALID_FIELD;
1501                         mtu = hfi1_max_mtu; /* use a valid MTU */
1502                 }
1503                 if (dd->vld[i].mtu != mtu) {
1504                         dd_dev_info(dd,
1505                                     "MTU change on vl %d from %d to %d\n",
1506                                     i, dd->vld[i].mtu, mtu);
1507                         dd->vld[i].mtu = mtu;
1508                         call_set_mtu++;
1509                 }
1510         }
1511         /* As per OPAV1 spec: VL15 must support and be configured
1512          * for operation with a 2048 or larger MTU.
1513          */
1514         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15 / 2] & 0xF);
1515         if (mtu < 2048 || mtu == 0xffff)
1516                 mtu = 2048;
1517         if (dd->vld[15].mtu != mtu) {
1518                 dd_dev_info(dd,
1519                             "MTU change on vl 15 from %d to %d\n",
1520                             dd->vld[15].mtu, mtu);
1521                 dd->vld[15].mtu = mtu;
1522                 call_set_mtu++;
1523         }
1524         if (call_set_mtu)
1525                 set_mtu(ppd);
1526
1527         /* Set operational VLs */
1528         vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
1529         if (vls) {
1530                 if (vls > ppd->vls_supported) {
1531                         pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
1532                                 pi->operational_vls);
1533                         smp->status |= IB_SMP_INVALID_FIELD;
1534                 } else {
1535                         if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS,
1536                                             vls) == -EINVAL)
1537                                 smp->status |= IB_SMP_INVALID_FIELD;
1538                 }
1539         }
1540
1541         if (pi->mkey_violations == 0)
1542                 ibp->rvp.mkey_violations = 0;
1543
1544         if (pi->pkey_violations == 0)
1545                 ibp->rvp.pkey_violations = 0;
1546
1547         if (pi->qkey_violations == 0)
1548                 ibp->rvp.qkey_violations = 0;
1549
1550         ibp->rvp.subnet_timeout =
1551                 pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT;
1552
1553         crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode);
1554         crc_enabled >>= 4;
1555         crc_enabled &= 0xf;
1556
1557         if (crc_enabled != 0)
1558                 ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled);
1559
1560         ppd->is_active_optimize_enabled =
1561                         !!(be16_to_cpu(pi->port_mode)
1562                                         & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE);
1563
1564         ls_new = pi->port_states.portphysstate_portstate &
1565                         OPA_PI_MASK_PORT_STATE;
1566         ps_new = (pi->port_states.portphysstate_portstate &
1567                         OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4;
1568
1569         if (ls_old == IB_PORT_INIT) {
1570                 if (start_of_sm_config) {
1571                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1572                                 ppd->is_sm_config_started = 1;
1573                 } else if (ls_new == IB_PORT_ARMED) {
1574                         if (ppd->is_sm_config_started == 0) {
1575                                 invalid = 1;
1576                                 smp->status |= IB_SMP_INVALID_FIELD;
1577                         }
1578                 }
1579         }
1580
1581         /* Handle CLIENT_REREGISTER event b/c SM asked us for it */
1582         if (clientrereg) {
1583                 event.event = IB_EVENT_CLIENT_REREGISTER;
1584                 ib_dispatch_event(&event);
1585         }
1586
1587         /*
1588          * Do the port state change now that the other link parameters
1589          * have been set.
1590          * Changing the port physical state only makes sense if the link
1591          * is down or is being set to down.
1592          */
1593
1594         if (!invalid) {
1595                 ret = set_port_states(ppd, smp, ls_new, ps_new, local_mad);
1596                 if (ret)
1597                         return ret;
1598         }
1599
1600         ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len,
1601                                       max_len);
1602
1603         /* restore re-reg bit per o14-12.2.1 */
1604         pi->clientrereg_subnettimeout |= clientrereg;
1605
1606         /*
1607          * Apply the new link downgrade policy.  This may result in a link
1608          * bounce.  Do this after everything else so things are settled.
1609          * Possible problem: if setting the port state above fails, then
1610          * the policy change is not applied.
1611          */
1612         if (call_link_downgrade_policy)
1613                 apply_link_downgrade_policy(ppd, 0);
1614
1615         return ret;
1616
1617 get_only:
1618         return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len,
1619                                        max_len);
1620 }
1621
1622 /**
1623  * set_pkeys - set the PKEY table for ctxt 0
1624  * @dd: the hfi1_ib device
1625  * @port: the IB port number
1626  * @pkeys: the PKEY table
1627  */
1628 static int set_pkeys(struct hfi1_devdata *dd, u32 port, u16 *pkeys)
1629 {
1630         struct hfi1_pportdata *ppd;
1631         int i;
1632         int changed = 0;
1633         int update_includes_mgmt_partition = 0;
1634
1635         /*
1636          * IB port one/two always maps to context zero/one,
1637          * always a kernel context, no locking needed
1638          * If we get here with ppd setup, no need to check
1639          * that rcd is valid.
1640          */
1641         ppd = dd->pport + (port - 1);
1642         /*
1643          * If the update does not include the management pkey, don't do it.
1644          */
1645         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1646                 if (pkeys[i] == LIM_MGMT_P_KEY) {
1647                         update_includes_mgmt_partition = 1;
1648                         break;
1649                 }
1650         }
1651
1652         if (!update_includes_mgmt_partition)
1653                 return 1;
1654
1655         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1656                 u16 key = pkeys[i];
1657                 u16 okey = ppd->pkeys[i];
1658
1659                 if (key == okey)
1660                         continue;
1661                 /*
1662                  * The SM gives us the complete PKey table. We have
1663                  * to ensure that we put the PKeys in the matching
1664                  * slots.
1665                  */
1666                 ppd->pkeys[i] = key;
1667                 changed = 1;
1668         }
1669
1670         if (changed) {
1671                 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0);
1672                 hfi1_event_pkey_change(dd, port);
1673         }
1674
1675         return 0;
1676 }
1677
1678 static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1679                                     struct ib_device *ibdev, u32 port,
1680                                     u32 *resp_len, u32 max_len)
1681 {
1682         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1683         u32 n_blocks_sent = OPA_AM_NBLK(am);
1684         u32 start_block = am & 0x7ff;
1685         u16 *p = (u16 *)data;
1686         __be16 *q = (__be16 *)data;
1687         int i;
1688         u16 n_blocks_avail;
1689         unsigned npkeys = hfi1_get_npkeys(dd);
1690         u32 size = 0;
1691
1692         if (n_blocks_sent == 0) {
1693                 pr_warn("OPA Get PKey AM Invalid : P = %u; B = 0x%x; N = 0x%x\n",
1694                         port, start_block, n_blocks_sent);
1695                 smp->status |= IB_SMP_INVALID_FIELD;
1696                 return reply((struct ib_mad_hdr *)smp);
1697         }
1698
1699         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1700
1701         size = sizeof(u16) * (n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE);
1702
1703         if (smp_length_check(size, max_len)) {
1704                 smp->status |= IB_SMP_INVALID_FIELD;
1705                 return reply((struct ib_mad_hdr *)smp);
1706         }
1707
1708         if (start_block + n_blocks_sent > n_blocks_avail ||
1709             n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1710                 pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n",
1711                         start_block, n_blocks_sent, n_blocks_avail,
1712                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
1713                 smp->status |= IB_SMP_INVALID_FIELD;
1714                 return reply((struct ib_mad_hdr *)smp);
1715         }
1716
1717         for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++)
1718                 p[i] = be16_to_cpu(q[i]);
1719
1720         if (start_block == 0 && set_pkeys(dd, port, p) != 0) {
1721                 smp->status |= IB_SMP_INVALID_FIELD;
1722                 return reply((struct ib_mad_hdr *)smp);
1723         }
1724
1725         return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len,
1726                                         max_len);
1727 }
1728
1729 #define ILLEGAL_VL 12
1730 /*
1731  * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except
1732  * for SC15, which must map to VL15). If we don't remap things this
1733  * way it is possible for VL15 counters to increment when we try to
1734  * send on a SC which is mapped to an invalid VL.
1735  * When getting the table convert ILLEGAL_VL back to VL15.
1736  */
1737 static void filter_sc2vlt(void *data, bool set)
1738 {
1739         int i;
1740         u8 *pd = data;
1741
1742         for (i = 0; i < OPA_MAX_SCS; i++) {
1743                 if (i == 15)
1744                         continue;
1745
1746                 if (set) {
1747                         if ((pd[i] & 0x1f) == 0xf)
1748                                 pd[i] = ILLEGAL_VL;
1749                 } else {
1750                         if ((pd[i] & 0x1f) == ILLEGAL_VL)
1751                                 pd[i] = 0xf;
1752                 }
1753         }
1754 }
1755
1756 static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1757 {
1758         u64 *val = data;
1759
1760         filter_sc2vlt(data, true);
1761
1762         write_csr(dd, SEND_SC2VLT0, *val++);
1763         write_csr(dd, SEND_SC2VLT1, *val++);
1764         write_csr(dd, SEND_SC2VLT2, *val++);
1765         write_csr(dd, SEND_SC2VLT3, *val++);
1766         write_seqlock_irq(&dd->sc2vl_lock);
1767         memcpy(dd->sc2vl, data, sizeof(dd->sc2vl));
1768         write_sequnlock_irq(&dd->sc2vl_lock);
1769         return 0;
1770 }
1771
1772 static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1773 {
1774         u64 *val = (u64 *)data;
1775
1776         *val++ = read_csr(dd, SEND_SC2VLT0);
1777         *val++ = read_csr(dd, SEND_SC2VLT1);
1778         *val++ = read_csr(dd, SEND_SC2VLT2);
1779         *val++ = read_csr(dd, SEND_SC2VLT3);
1780
1781         filter_sc2vlt((u64 *)data, false);
1782         return 0;
1783 }
1784
1785 static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1786                                    struct ib_device *ibdev, u32 port,
1787                                    u32 *resp_len, u32 max_len)
1788 {
1789         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1790         u8 *p = data;
1791         size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */
1792         unsigned i;
1793
1794         if (am || smp_length_check(size, max_len)) {
1795                 smp->status |= IB_SMP_INVALID_FIELD;
1796                 return reply((struct ib_mad_hdr *)smp);
1797         }
1798
1799         for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1800                 *p++ = ibp->sl_to_sc[i];
1801
1802         if (resp_len)
1803                 *resp_len += size;
1804
1805         return reply((struct ib_mad_hdr *)smp);
1806 }
1807
1808 static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1809                                    struct ib_device *ibdev, u32 port,
1810                                    u32 *resp_len, u32 max_len)
1811 {
1812         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1813         u8 *p = data;
1814         size_t size = ARRAY_SIZE(ibp->sl_to_sc);
1815         int i;
1816         u8 sc;
1817
1818         if (am || smp_length_check(size, max_len)) {
1819                 smp->status |= IB_SMP_INVALID_FIELD;
1820                 return reply((struct ib_mad_hdr *)smp);
1821         }
1822
1823         for (i = 0; i <  ARRAY_SIZE(ibp->sl_to_sc); i++) {
1824                 sc = *p++;
1825                 if (ibp->sl_to_sc[i] != sc) {
1826                         ibp->sl_to_sc[i] = sc;
1827
1828                         /* Put all stale qps into error state */
1829                         hfi1_error_port_qps(ibp, i);
1830                 }
1831         }
1832
1833         return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len,
1834                                        max_len);
1835 }
1836
1837 static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1838                                    struct ib_device *ibdev, u32 port,
1839                                    u32 *resp_len, u32 max_len)
1840 {
1841         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1842         u8 *p = data;
1843         size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */
1844         unsigned i;
1845
1846         if (am || smp_length_check(size, max_len)) {
1847                 smp->status |= IB_SMP_INVALID_FIELD;
1848                 return reply((struct ib_mad_hdr *)smp);
1849         }
1850
1851         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1852                 *p++ = ibp->sc_to_sl[i];
1853
1854         if (resp_len)
1855                 *resp_len += size;
1856
1857         return reply((struct ib_mad_hdr *)smp);
1858 }
1859
1860 static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1861                                    struct ib_device *ibdev, u32 port,
1862                                    u32 *resp_len, u32 max_len)
1863 {
1864         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1865         size_t size = ARRAY_SIZE(ibp->sc_to_sl);
1866         u8 *p = data;
1867         int i;
1868
1869         if (am || smp_length_check(size, max_len)) {
1870                 smp->status |= IB_SMP_INVALID_FIELD;
1871                 return reply((struct ib_mad_hdr *)smp);
1872         }
1873
1874         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1875                 ibp->sc_to_sl[i] = *p++;
1876
1877         return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len,
1878                                        max_len);
1879 }
1880
1881 static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1882                                     struct ib_device *ibdev, u32 port,
1883                                     u32 *resp_len, u32 max_len)
1884 {
1885         u32 n_blocks = OPA_AM_NBLK(am);
1886         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1887         void *vp = (void *)data;
1888         size_t size = 4 * sizeof(u64);
1889
1890         if (n_blocks != 1 || smp_length_check(size, max_len)) {
1891                 smp->status |= IB_SMP_INVALID_FIELD;
1892                 return reply((struct ib_mad_hdr *)smp);
1893         }
1894
1895         get_sc2vlt_tables(dd, vp);
1896
1897         if (resp_len)
1898                 *resp_len += size;
1899
1900         return reply((struct ib_mad_hdr *)smp);
1901 }
1902
1903 static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1904                                     struct ib_device *ibdev, u32 port,
1905                                     u32 *resp_len, u32 max_len)
1906 {
1907         u32 n_blocks = OPA_AM_NBLK(am);
1908         int async_update = OPA_AM_ASYNC(am);
1909         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1910         void *vp = (void *)data;
1911         struct hfi1_pportdata *ppd;
1912         int lstate;
1913         /*
1914          * set_sc2vlt_tables writes the information contained in *data
1915          * to four 64-bit registers SendSC2VLt[0-3]. We need to make
1916          * sure *max_len is not greater than the total size of the four
1917          * SendSC2VLt[0-3] registers.
1918          */
1919         size_t size = 4 * sizeof(u64);
1920
1921         if (n_blocks != 1 || async_update || smp_length_check(size, max_len)) {
1922                 smp->status |= IB_SMP_INVALID_FIELD;
1923                 return reply((struct ib_mad_hdr *)smp);
1924         }
1925
1926         /* IB numbers ports from 1, hw from 0 */
1927         ppd = dd->pport + (port - 1);
1928         lstate = driver_lstate(ppd);
1929         /*
1930          * it's known that async_update is 0 by this point, but include
1931          * the explicit check for clarity
1932          */
1933         if (!async_update &&
1934             (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) {
1935                 smp->status |= IB_SMP_INVALID_FIELD;
1936                 return reply((struct ib_mad_hdr *)smp);
1937         }
1938
1939         set_sc2vlt_tables(dd, vp);
1940
1941         return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len,
1942                                         max_len);
1943 }
1944
1945 static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1946                                      struct ib_device *ibdev, u32 port,
1947                                      u32 *resp_len, u32 max_len)
1948 {
1949         u32 n_blocks = OPA_AM_NPORT(am);
1950         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1951         struct hfi1_pportdata *ppd;
1952         void *vp = (void *)data;
1953         int size = sizeof(struct sc2vlnt);
1954
1955         if (n_blocks != 1 || smp_length_check(size, max_len)) {
1956                 smp->status |= IB_SMP_INVALID_FIELD;
1957                 return reply((struct ib_mad_hdr *)smp);
1958         }
1959
1960         ppd = dd->pport + (port - 1);
1961
1962         fm_get_table(ppd, FM_TBL_SC2VLNT, vp);
1963
1964         if (resp_len)
1965                 *resp_len += size;
1966
1967         return reply((struct ib_mad_hdr *)smp);
1968 }
1969
1970 static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1971                                      struct ib_device *ibdev, u32 port,
1972                                      u32 *resp_len, u32 max_len)
1973 {
1974         u32 n_blocks = OPA_AM_NPORT(am);
1975         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1976         struct hfi1_pportdata *ppd;
1977         void *vp = (void *)data;
1978         int lstate;
1979         int size = sizeof(struct sc2vlnt);
1980
1981         if (n_blocks != 1 || smp_length_check(size, max_len)) {
1982                 smp->status |= IB_SMP_INVALID_FIELD;
1983                 return reply((struct ib_mad_hdr *)smp);
1984         }
1985
1986         /* IB numbers ports from 1, hw from 0 */
1987         ppd = dd->pport + (port - 1);
1988         lstate = driver_lstate(ppd);
1989         if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) {
1990                 smp->status |= IB_SMP_INVALID_FIELD;
1991                 return reply((struct ib_mad_hdr *)smp);
1992         }
1993
1994         ppd = dd->pport + (port - 1);
1995
1996         fm_set_table(ppd, FM_TBL_SC2VLNT, vp);
1997
1998         return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
1999                                          resp_len, max_len);
2000 }
2001
2002 static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
2003                               struct ib_device *ibdev, u32 port,
2004                               u32 *resp_len, u32 max_len)
2005 {
2006         u32 nports = OPA_AM_NPORT(am);
2007         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
2008         u32 lstate;
2009         struct hfi1_ibport *ibp;
2010         struct hfi1_pportdata *ppd;
2011         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
2012
2013         if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) {
2014                 smp->status |= IB_SMP_INVALID_FIELD;
2015                 return reply((struct ib_mad_hdr *)smp);
2016         }
2017
2018         ibp = to_iport(ibdev, port);
2019         ppd = ppd_from_ibp(ibp);
2020
2021         lstate = driver_lstate(ppd);
2022
2023         if (start_of_sm_config && (lstate == IB_PORT_INIT))
2024                 ppd->is_sm_config_started = 1;
2025
2026         psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
2027         psi->port_states.ledenable_offlinereason |=
2028                 ppd->is_sm_config_started << 5;
2029         psi->port_states.ledenable_offlinereason |=
2030                 ppd->offline_disabled_reason;
2031
2032         psi->port_states.portphysstate_portstate =
2033                 (driver_pstate(ppd) << 4) | (lstate & 0xf);
2034         psi->link_width_downgrade_tx_active =
2035                 cpu_to_be16(ppd->link_width_downgrade_tx_active);
2036         psi->link_width_downgrade_rx_active =
2037                 cpu_to_be16(ppd->link_width_downgrade_rx_active);
2038         if (resp_len)
2039                 *resp_len += sizeof(struct opa_port_state_info);
2040
2041         return reply((struct ib_mad_hdr *)smp);
2042 }
2043
2044 static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
2045                               struct ib_device *ibdev, u32 port,
2046                               u32 *resp_len, u32 max_len, int local_mad)
2047 {
2048         u32 nports = OPA_AM_NPORT(am);
2049         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
2050         u32 ls_old;
2051         u8 ls_new, ps_new;
2052         struct hfi1_ibport *ibp;
2053         struct hfi1_pportdata *ppd;
2054         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
2055         int ret, invalid = 0;
2056
2057         if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) {
2058                 smp->status |= IB_SMP_INVALID_FIELD;
2059                 return reply((struct ib_mad_hdr *)smp);
2060         }
2061
2062         ibp = to_iport(ibdev, port);
2063         ppd = ppd_from_ibp(ibp);
2064
2065         ls_old = driver_lstate(ppd);
2066
2067         ls_new = port_states_to_logical_state(&psi->port_states);
2068         ps_new = port_states_to_phys_state(&psi->port_states);
2069
2070         if (ls_old == IB_PORT_INIT) {
2071                 if (start_of_sm_config) {
2072                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
2073                                 ppd->is_sm_config_started = 1;
2074                 } else if (ls_new == IB_PORT_ARMED) {
2075                         if (ppd->is_sm_config_started == 0) {
2076                                 invalid = 1;
2077                                 smp->status |= IB_SMP_INVALID_FIELD;
2078                         }
2079                 }
2080         }
2081
2082         if (!invalid) {
2083                 ret = set_port_states(ppd, smp, ls_new, ps_new, local_mad);
2084                 if (ret)
2085                         return ret;
2086         }
2087
2088         return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len,
2089                                   max_len);
2090 }
2091
2092 static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data,
2093                                      struct ib_device *ibdev, u32 port,
2094                                      u32 *resp_len, u32 max_len)
2095 {
2096         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2097         u32 addr = OPA_AM_CI_ADDR(am);
2098         u32 len = OPA_AM_CI_LEN(am) + 1;
2099         int ret;
2100
2101         if (dd->pport->port_type != PORT_TYPE_QSFP ||
2102             smp_length_check(len, max_len)) {
2103                 smp->status |= IB_SMP_INVALID_FIELD;
2104                 return reply((struct ib_mad_hdr *)smp);
2105         }
2106
2107 #define __CI_PAGE_SIZE BIT(7) /* 128 bytes */
2108 #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1)
2109 #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK)
2110
2111         /*
2112          * check that addr is within spec, and
2113          * addr and (addr + len - 1) are on the same "page"
2114          */
2115         if (addr >= 4096 ||
2116             (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) {
2117                 smp->status |= IB_SMP_INVALID_FIELD;
2118                 return reply((struct ib_mad_hdr *)smp);
2119         }
2120
2121         ret = get_cable_info(dd, port, addr, len, data);
2122
2123         if (ret == -ENODEV) {
2124                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
2125                 return reply((struct ib_mad_hdr *)smp);
2126         }
2127
2128         /* The address range for the CableInfo SMA query is wider than the
2129          * memory available on the QSFP cable. We want to return a valid
2130          * response, albeit zeroed out, for address ranges beyond available
2131          * memory but that are within the CableInfo query spec
2132          */
2133         if (ret < 0 && ret != -ERANGE) {
2134                 smp->status |= IB_SMP_INVALID_FIELD;
2135                 return reply((struct ib_mad_hdr *)smp);
2136         }
2137
2138         if (resp_len)
2139                 *resp_len += len;
2140
2141         return reply((struct ib_mad_hdr *)smp);
2142 }
2143
2144 static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
2145                               struct ib_device *ibdev, u32 port, u32 *resp_len,
2146                               u32 max_len)
2147 {
2148         u32 num_ports = OPA_AM_NPORT(am);
2149         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2150         struct hfi1_pportdata *ppd;
2151         struct buffer_control *p = (struct buffer_control *)data;
2152         int size = sizeof(struct buffer_control);
2153
2154         if (num_ports != 1 || smp_length_check(size, max_len)) {
2155                 smp->status |= IB_SMP_INVALID_FIELD;
2156                 return reply((struct ib_mad_hdr *)smp);
2157         }
2158
2159         ppd = dd->pport + (port - 1);
2160         fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p);
2161         trace_bct_get(dd, p);
2162         if (resp_len)
2163                 *resp_len += size;
2164
2165         return reply((struct ib_mad_hdr *)smp);
2166 }
2167
2168 static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
2169                               struct ib_device *ibdev, u32 port, u32 *resp_len,
2170                               u32 max_len)
2171 {
2172         u32 num_ports = OPA_AM_NPORT(am);
2173         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2174         struct hfi1_pportdata *ppd;
2175         struct buffer_control *p = (struct buffer_control *)data;
2176
2177         if (num_ports != 1 || smp_length_check(sizeof(*p), max_len)) {
2178                 smp->status |= IB_SMP_INVALID_FIELD;
2179                 return reply((struct ib_mad_hdr *)smp);
2180         }
2181         ppd = dd->pport + (port - 1);
2182         trace_bct_set(dd, p);
2183         if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) {
2184                 smp->status |= IB_SMP_INVALID_FIELD;
2185                 return reply((struct ib_mad_hdr *)smp);
2186         }
2187
2188         return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len,
2189                                   max_len);
2190 }
2191
2192 static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
2193                                  struct ib_device *ibdev, u32 port,
2194                                  u32 *resp_len, u32 max_len)
2195 {
2196         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
2197         u32 num_ports = OPA_AM_NPORT(am);
2198         u8 section = (am & 0x00ff0000) >> 16;
2199         u8 *p = data;
2200         int size = 256;
2201
2202         if (num_ports != 1 || smp_length_check(size, max_len)) {
2203                 smp->status |= IB_SMP_INVALID_FIELD;
2204                 return reply((struct ib_mad_hdr *)smp);
2205         }
2206
2207         switch (section) {
2208         case OPA_VLARB_LOW_ELEMENTS:
2209                 fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p);
2210                 break;
2211         case OPA_VLARB_HIGH_ELEMENTS:
2212                 fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p);
2213                 break;
2214         case OPA_VLARB_PREEMPT_ELEMENTS:
2215                 fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p);
2216                 break;
2217         case OPA_VLARB_PREEMPT_MATRIX:
2218                 fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p);
2219                 break;
2220         default:
2221                 pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n",
2222                         be32_to_cpu(smp->attr_mod));
2223                 smp->status |= IB_SMP_INVALID_FIELD;
2224                 size = 0;
2225                 break;
2226         }
2227
2228         if (size > 0 && resp_len)
2229                 *resp_len += size;
2230
2231         return reply((struct ib_mad_hdr *)smp);
2232 }
2233
2234 static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
2235                                  struct ib_device *ibdev, u32 port,
2236                                  u32 *resp_len, u32 max_len)
2237 {
2238         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
2239         u32 num_ports = OPA_AM_NPORT(am);
2240         u8 section = (am & 0x00ff0000) >> 16;
2241         u8 *p = data;
2242         int size = 256;
2243
2244         if (num_ports != 1 || smp_length_check(size, max_len)) {
2245                 smp->status |= IB_SMP_INVALID_FIELD;
2246                 return reply((struct ib_mad_hdr *)smp);
2247         }
2248
2249         switch (section) {
2250         case OPA_VLARB_LOW_ELEMENTS:
2251                 (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
2252                 break;
2253         case OPA_VLARB_HIGH_ELEMENTS:
2254                 (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
2255                 break;
2256         /*
2257          * neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX
2258          * can be changed from the default values
2259          */
2260         case OPA_VLARB_PREEMPT_ELEMENTS:
2261         case OPA_VLARB_PREEMPT_MATRIX:
2262                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
2263                 break;
2264         default:
2265                 pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n",
2266                         be32_to_cpu(smp->attr_mod));
2267                 smp->status |= IB_SMP_INVALID_FIELD;
2268                 break;
2269         }
2270
2271         return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len,
2272                                      max_len);
2273 }
2274
2275 struct opa_pma_mad {
2276         struct ib_mad_hdr mad_hdr;
2277         u8 data[2024];
2278 } __packed;
2279
2280 struct opa_port_status_req {
2281         __u8 port_num;
2282         __u8 reserved[3];
2283         __be32 vl_select_mask;
2284 };
2285
2286 #define VL_MASK_ALL             0x00000000000080ffUL
2287
2288 struct opa_port_status_rsp {
2289         __u8 port_num;
2290         __u8 reserved[3];
2291         __be32  vl_select_mask;
2292
2293         /* Data counters */
2294         __be64 port_xmit_data;
2295         __be64 port_rcv_data;
2296         __be64 port_xmit_pkts;
2297         __be64 port_rcv_pkts;
2298         __be64 port_multicast_xmit_pkts;
2299         __be64 port_multicast_rcv_pkts;
2300         __be64 port_xmit_wait;
2301         __be64 sw_port_congestion;
2302         __be64 port_rcv_fecn;
2303         __be64 port_rcv_becn;
2304         __be64 port_xmit_time_cong;
2305         __be64 port_xmit_wasted_bw;
2306         __be64 port_xmit_wait_data;
2307         __be64 port_rcv_bubble;
2308         __be64 port_mark_fecn;
2309         /* Error counters */
2310         __be64 port_rcv_constraint_errors;
2311         __be64 port_rcv_switch_relay_errors;
2312         __be64 port_xmit_discards;
2313         __be64 port_xmit_constraint_errors;
2314         __be64 port_rcv_remote_physical_errors;
2315         __be64 local_link_integrity_errors;
2316         __be64 port_rcv_errors;
2317         __be64 excessive_buffer_overruns;
2318         __be64 fm_config_errors;
2319         __be32 link_error_recovery;
2320         __be32 link_downed;
2321         u8 uncorrectable_errors;
2322
2323         u8 link_quality_indicator; /* 5res, 3bit */
2324         u8 res2[6];
2325         struct _vls_pctrs {
2326                 /* per-VL Data counters */
2327                 __be64 port_vl_xmit_data;
2328                 __be64 port_vl_rcv_data;
2329                 __be64 port_vl_xmit_pkts;
2330                 __be64 port_vl_rcv_pkts;
2331                 __be64 port_vl_xmit_wait;
2332                 __be64 sw_port_vl_congestion;
2333                 __be64 port_vl_rcv_fecn;
2334                 __be64 port_vl_rcv_becn;
2335                 __be64 port_xmit_time_cong;
2336                 __be64 port_vl_xmit_wasted_bw;
2337                 __be64 port_vl_xmit_wait_data;
2338                 __be64 port_vl_rcv_bubble;
2339                 __be64 port_vl_mark_fecn;
2340                 __be64 port_vl_xmit_discards;
2341         } vls[]; /* real array size defined by # bits set in vl_select_mask */
2342 };
2343
2344 enum counter_selects {
2345         CS_PORT_XMIT_DATA                       = (1 << 31),
2346         CS_PORT_RCV_DATA                        = (1 << 30),
2347         CS_PORT_XMIT_PKTS                       = (1 << 29),
2348         CS_PORT_RCV_PKTS                        = (1 << 28),
2349         CS_PORT_MCAST_XMIT_PKTS                 = (1 << 27),
2350         CS_PORT_MCAST_RCV_PKTS                  = (1 << 26),
2351         CS_PORT_XMIT_WAIT                       = (1 << 25),
2352         CS_SW_PORT_CONGESTION                   = (1 << 24),
2353         CS_PORT_RCV_FECN                        = (1 << 23),
2354         CS_PORT_RCV_BECN                        = (1 << 22),
2355         CS_PORT_XMIT_TIME_CONG                  = (1 << 21),
2356         CS_PORT_XMIT_WASTED_BW                  = (1 << 20),
2357         CS_PORT_XMIT_WAIT_DATA                  = (1 << 19),
2358         CS_PORT_RCV_BUBBLE                      = (1 << 18),
2359         CS_PORT_MARK_FECN                       = (1 << 17),
2360         CS_PORT_RCV_CONSTRAINT_ERRORS           = (1 << 16),
2361         CS_PORT_RCV_SWITCH_RELAY_ERRORS         = (1 << 15),
2362         CS_PORT_XMIT_DISCARDS                   = (1 << 14),
2363         CS_PORT_XMIT_CONSTRAINT_ERRORS          = (1 << 13),
2364         CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS      = (1 << 12),
2365         CS_LOCAL_LINK_INTEGRITY_ERRORS          = (1 << 11),
2366         CS_PORT_RCV_ERRORS                      = (1 << 10),
2367         CS_EXCESSIVE_BUFFER_OVERRUNS            = (1 << 9),
2368         CS_FM_CONFIG_ERRORS                     = (1 << 8),
2369         CS_LINK_ERROR_RECOVERY                  = (1 << 7),
2370         CS_LINK_DOWNED                          = (1 << 6),
2371         CS_UNCORRECTABLE_ERRORS                 = (1 << 5),
2372 };
2373
2374 struct opa_clear_port_status {
2375         __be64 port_select_mask[4];
2376         __be32 counter_select_mask;
2377 };
2378
2379 struct opa_aggregate {
2380         __be16 attr_id;
2381         __be16 err_reqlength;   /* 1 bit, 8 res, 7 bit */
2382         __be32 attr_mod;
2383         u8 data[];
2384 };
2385
2386 #define MSK_LLI 0x000000f0
2387 #define MSK_LLI_SFT 4
2388 #define MSK_LER 0x0000000f
2389 #define MSK_LER_SFT 0
2390 #define ADD_LLI 8
2391 #define ADD_LER 2
2392
2393 /* Request contains first three fields, response contains those plus the rest */
2394 struct opa_port_data_counters_msg {
2395         __be64 port_select_mask[4];
2396         __be32 vl_select_mask;
2397         __be32 resolution;
2398
2399         /* Response fields follow */
2400         struct _port_dctrs {
2401                 u8 port_number;
2402                 u8 reserved2[3];
2403                 __be32 link_quality_indicator; /* 29res, 3bit */
2404
2405                 /* Data counters */
2406                 __be64 port_xmit_data;
2407                 __be64 port_rcv_data;
2408                 __be64 port_xmit_pkts;
2409                 __be64 port_rcv_pkts;
2410                 __be64 port_multicast_xmit_pkts;
2411                 __be64 port_multicast_rcv_pkts;
2412                 __be64 port_xmit_wait;
2413                 __be64 sw_port_congestion;
2414                 __be64 port_rcv_fecn;
2415                 __be64 port_rcv_becn;
2416                 __be64 port_xmit_time_cong;
2417                 __be64 port_xmit_wasted_bw;
2418                 __be64 port_xmit_wait_data;
2419                 __be64 port_rcv_bubble;
2420                 __be64 port_mark_fecn;
2421
2422                 __be64 port_error_counter_summary;
2423                 /* Sum of error counts/port */
2424
2425                 struct _vls_dctrs {
2426                         /* per-VL Data counters */
2427                         __be64 port_vl_xmit_data;
2428                         __be64 port_vl_rcv_data;
2429                         __be64 port_vl_xmit_pkts;
2430                         __be64 port_vl_rcv_pkts;
2431                         __be64 port_vl_xmit_wait;
2432                         __be64 sw_port_vl_congestion;
2433                         __be64 port_vl_rcv_fecn;
2434                         __be64 port_vl_rcv_becn;
2435                         __be64 port_xmit_time_cong;
2436                         __be64 port_vl_xmit_wasted_bw;
2437                         __be64 port_vl_xmit_wait_data;
2438                         __be64 port_vl_rcv_bubble;
2439                         __be64 port_vl_mark_fecn;
2440                 } vls[];
2441                 /* array size defined by #bits set in vl_select_mask*/
2442         } port;
2443 };
2444
2445 struct opa_port_error_counters64_msg {
2446         /*
2447          * Request contains first two fields, response contains the
2448          * whole magilla
2449          */
2450         __be64 port_select_mask[4];
2451         __be32 vl_select_mask;
2452
2453         /* Response-only fields follow */
2454         __be32 reserved1;
2455         struct _port_ectrs {
2456                 u8 port_number;
2457                 u8 reserved2[7];
2458                 __be64 port_rcv_constraint_errors;
2459                 __be64 port_rcv_switch_relay_errors;
2460                 __be64 port_xmit_discards;
2461                 __be64 port_xmit_constraint_errors;
2462                 __be64 port_rcv_remote_physical_errors;
2463                 __be64 local_link_integrity_errors;
2464                 __be64 port_rcv_errors;
2465                 __be64 excessive_buffer_overruns;
2466                 __be64 fm_config_errors;
2467                 __be32 link_error_recovery;
2468                 __be32 link_downed;
2469                 u8 uncorrectable_errors;
2470                 u8 reserved3[7];
2471                 struct _vls_ectrs {
2472                         __be64 port_vl_xmit_discards;
2473                 } vls[];
2474                 /* array size defined by #bits set in vl_select_mask */
2475         } port;
2476 };
2477
2478 struct opa_port_error_info_msg {
2479         __be64 port_select_mask[4];
2480         __be32 error_info_select_mask;
2481         __be32 reserved1;
2482         struct _port_ei {
2483                 u8 port_number;
2484                 u8 reserved2[7];
2485
2486                 /* PortRcvErrorInfo */
2487                 struct {
2488                         u8 status_and_code;
2489                         union {
2490                                 u8 raw[17];
2491                                 struct {
2492                                         /* EI1to12 format */
2493                                         u8 packet_flit1[8];
2494                                         u8 packet_flit2[8];
2495                                         u8 remaining_flit_bits12;
2496                                 } ei1to12;
2497                                 struct {
2498                                         u8 packet_bytes[8];
2499                                         u8 remaining_flit_bits;
2500                                 } ei13;
2501                         } ei;
2502                         u8 reserved3[6];
2503                 } __packed port_rcv_ei;
2504
2505                 /* ExcessiveBufferOverrunInfo */
2506                 struct {
2507                         u8 status_and_sc;
2508                         u8 reserved4[7];
2509                 } __packed excessive_buffer_overrun_ei;
2510
2511                 /* PortXmitConstraintErrorInfo */
2512                 struct {
2513                         u8 status;
2514                         u8 reserved5;
2515                         __be16 pkey;
2516                         __be32 slid;
2517                 } __packed port_xmit_constraint_ei;
2518
2519                 /* PortRcvConstraintErrorInfo */
2520                 struct {
2521                         u8 status;
2522                         u8 reserved6;
2523                         __be16 pkey;
2524                         __be32 slid;
2525                 } __packed port_rcv_constraint_ei;
2526
2527                 /* PortRcvSwitchRelayErrorInfo */
2528                 struct {
2529                         u8 status_and_code;
2530                         u8 reserved7[3];
2531                         __u32 error_info;
2532                 } __packed port_rcv_switch_relay_ei;
2533
2534                 /* UncorrectableErrorInfo */
2535                 struct {
2536                         u8 status_and_code;
2537                         u8 reserved8;
2538                 } __packed uncorrectable_ei;
2539
2540                 /* FMConfigErrorInfo */
2541                 struct {
2542                         u8 status_and_code;
2543                         u8 error_info;
2544                 } __packed fm_config_ei;
2545                 __u32 reserved9;
2546         } port;
2547 };
2548
2549 /* opa_port_error_info_msg error_info_select_mask bit definitions */
2550 enum error_info_selects {
2551         ES_PORT_RCV_ERROR_INFO                  = (1 << 31),
2552         ES_EXCESSIVE_BUFFER_OVERRUN_INFO        = (1 << 30),
2553         ES_PORT_XMIT_CONSTRAINT_ERROR_INFO      = (1 << 29),
2554         ES_PORT_RCV_CONSTRAINT_ERROR_INFO       = (1 << 28),
2555         ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO     = (1 << 27),
2556         ES_UNCORRECTABLE_ERROR_INFO             = (1 << 26),
2557         ES_FM_CONFIG_ERROR_INFO                 = (1 << 25)
2558 };
2559
2560 static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp,
2561                                      struct ib_device *ibdev, u32 *resp_len)
2562 {
2563         struct opa_class_port_info *p =
2564                 (struct opa_class_port_info *)pmp->data;
2565
2566         memset(pmp->data, 0, sizeof(pmp->data));
2567
2568         if (pmp->mad_hdr.attr_mod != 0)
2569                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2570
2571         p->base_version = OPA_MGMT_BASE_VERSION;
2572         p->class_version = OPA_SM_CLASS_VERSION;
2573         /*
2574          * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2575          */
2576         p->cap_mask2_resp_time = cpu_to_be32(18);
2577
2578         if (resp_len)
2579                 *resp_len += sizeof(*p);
2580
2581         return reply((struct ib_mad_hdr *)pmp);
2582 }
2583
2584 static void a0_portstatus(struct hfi1_pportdata *ppd,
2585                           struct opa_port_status_rsp *rsp)
2586 {
2587         if (!is_bx(ppd->dd)) {
2588                 unsigned long vl;
2589                 u64 sum_vl_xmit_wait = 0;
2590                 unsigned long vl_all_mask = VL_MASK_ALL;
2591
2592                 for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) {
2593                         u64 tmp = sum_vl_xmit_wait +
2594                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2595                                                  idx_from_vl(vl));
2596                         if (tmp < sum_vl_xmit_wait) {
2597                                 /* we wrapped */
2598                                 sum_vl_xmit_wait = (u64)~0;
2599                                 break;
2600                         }
2601                         sum_vl_xmit_wait = tmp;
2602                 }
2603                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2604                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2605         }
2606 }
2607
2608 /**
2609  * tx_link_width - convert link width bitmask to integer
2610  * value representing actual link width.
2611  * @link_width: width of active link
2612  * @return: return index of the bit set in link_width var
2613  *
2614  * The function convert and return the index of bit set
2615  * that indicate the current link width.
2616  */
2617 u16 tx_link_width(u16 link_width)
2618 {
2619         int n = LINK_WIDTH_DEFAULT;
2620         u16 tx_width = n;
2621
2622         while (link_width && n) {
2623                 if (link_width & (1 << (n - 1))) {
2624                         tx_width = n;
2625                         break;
2626                 }
2627                 n--;
2628         }
2629
2630         return tx_width;
2631 }
2632
2633 /**
2634  * get_xmit_wait_counters - Convert HFI 's SendWaitCnt/SendWaitVlCnt
2635  * counter in unit of TXE cycle times to flit times.
2636  * @ppd: info of physical Hfi port
2637  * @link_width: width of active link
2638  * @link_speed: speed of active link
2639  * @vl: represent VL0-VL7, VL15 for PortVLXmitWait counters request
2640  * and if vl value is C_VL_COUNT, it represent SendWaitCnt
2641  * counter request
2642  * @return: return SendWaitCnt/SendWaitVlCnt counter value per vl.
2643  *
2644  * Convert SendWaitCnt/SendWaitVlCnt counter from TXE cycle times to
2645  * flit times. Call this function to samples these counters. This
2646  * function will calculate for previous state transition and update
2647  * current state at end of function using ppd->prev_link_width and
2648  * ppd->port_vl_xmit_wait_last to port_vl_xmit_wait_curr and link_width.
2649  */
2650 u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd,
2651                            u16 link_width, u16 link_speed, int vl)
2652 {
2653         u64 port_vl_xmit_wait_curr;
2654         u64 delta_vl_xmit_wait;
2655         u64 xmit_wait_val;
2656
2657         if (vl > C_VL_COUNT)
2658                 return  0;
2659         if (vl < C_VL_COUNT)
2660                 port_vl_xmit_wait_curr =
2661                         read_port_cntr(ppd, C_TX_WAIT_VL, vl);
2662         else
2663                 port_vl_xmit_wait_curr =
2664                         read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL);
2665
2666         xmit_wait_val =
2667                 port_vl_xmit_wait_curr -
2668                 ppd->port_vl_xmit_wait_last[vl];
2669         delta_vl_xmit_wait =
2670                 convert_xmit_counter(xmit_wait_val,
2671                                      ppd->prev_link_width,
2672                                      link_speed);
2673
2674         ppd->vl_xmit_flit_cnt[vl] += delta_vl_xmit_wait;
2675         ppd->port_vl_xmit_wait_last[vl] = port_vl_xmit_wait_curr;
2676         ppd->prev_link_width = link_width;
2677
2678         return ppd->vl_xmit_flit_cnt[vl];
2679 }
2680
2681 static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
2682                                   struct ib_device *ibdev,
2683                                   u32 port, u32 *resp_len)
2684 {
2685         struct opa_port_status_req *req =
2686                 (struct opa_port_status_req *)pmp->data;
2687         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2688         struct opa_port_status_rsp *rsp;
2689         unsigned long vl_select_mask = be32_to_cpu(req->vl_select_mask);
2690         unsigned long vl;
2691         size_t response_data_size;
2692         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2693         u32 port_num = req->port_num;
2694         u8 num_vls = hweight64(vl_select_mask);
2695         struct _vls_pctrs *vlinfo;
2696         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2697         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2698         int vfi;
2699         u64 tmp, tmp2;
2700         u16 link_width;
2701         u16 link_speed;
2702
2703         response_data_size = struct_size(rsp, vls, num_vls);
2704         if (response_data_size > sizeof(pmp->data)) {
2705                 pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE;
2706                 return reply((struct ib_mad_hdr *)pmp);
2707         }
2708
2709         if (nports != 1 || (port_num && port_num != port) ||
2710             num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) {
2711                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2712                 return reply((struct ib_mad_hdr *)pmp);
2713         }
2714
2715         memset(pmp->data, 0, sizeof(pmp->data));
2716
2717         rsp = (struct opa_port_status_rsp *)pmp->data;
2718         if (port_num)
2719                 rsp->port_num = port_num;
2720         else
2721                 rsp->port_num = port;
2722
2723         rsp->port_rcv_constraint_errors =
2724                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2725                                            CNTR_INVALID_VL));
2726
2727         hfi1_read_link_quality(dd, &rsp->link_quality_indicator);
2728
2729         rsp->vl_select_mask = cpu_to_be32((u32)vl_select_mask);
2730         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2731                                           CNTR_INVALID_VL));
2732         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2733                                          CNTR_INVALID_VL));
2734         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2735                                           CNTR_INVALID_VL));
2736         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2737                                          CNTR_INVALID_VL));
2738         rsp->port_multicast_xmit_pkts =
2739                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2740                                           CNTR_INVALID_VL));
2741         rsp->port_multicast_rcv_pkts =
2742                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2743                                           CNTR_INVALID_VL));
2744         /*
2745          * Convert PortXmitWait counter from TXE cycle times
2746          * to flit times.
2747          */
2748         link_width =
2749                 tx_link_width(ppd->link_width_downgrade_tx_active);
2750         link_speed = get_link_speed(ppd->link_speed_active);
2751         rsp->port_xmit_wait =
2752                 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
2753                                                    link_speed, C_VL_COUNT));
2754         rsp->port_rcv_fecn =
2755                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2756         rsp->port_rcv_becn =
2757                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2758         rsp->port_xmit_discards =
2759                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2760                                            CNTR_INVALID_VL));
2761         rsp->port_xmit_constraint_errors =
2762                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2763                                            CNTR_INVALID_VL));
2764         rsp->port_rcv_remote_physical_errors =
2765                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2766                                           CNTR_INVALID_VL));
2767         rsp->local_link_integrity_errors =
2768                 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
2769                                           CNTR_INVALID_VL));
2770         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2771         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2772                                    CNTR_INVALID_VL);
2773         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2774                 /* overflow/wrapped */
2775                 rsp->link_error_recovery = cpu_to_be32(~0);
2776         } else {
2777                 rsp->link_error_recovery = cpu_to_be32(tmp2);
2778         }
2779         rsp->port_rcv_errors =
2780                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2781         rsp->excessive_buffer_overruns =
2782                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2783         rsp->fm_config_errors =
2784                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2785                                           CNTR_INVALID_VL));
2786         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2787                                                       CNTR_INVALID_VL));
2788
2789         /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */
2790         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2791         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2792
2793         vlinfo = &rsp->vls[0];
2794         vfi = 0;
2795         /* The vl_select_mask has been checked above, and we know
2796          * that it contains only entries which represent valid VLs.
2797          * So in the for_each_set_bit() loop below, we don't need
2798          * any additional checks for vl.
2799          */
2800         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
2801                 memset(vlinfo, 0, sizeof(*vlinfo));
2802
2803                 tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
2804                 rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
2805
2806                 rsp->vls[vfi].port_vl_rcv_pkts =
2807                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2808                                                   idx_from_vl(vl)));
2809
2810                 rsp->vls[vfi].port_vl_xmit_data =
2811                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2812                                                    idx_from_vl(vl)));
2813
2814                 rsp->vls[vfi].port_vl_xmit_pkts =
2815                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2816                                                    idx_from_vl(vl)));
2817                 /*
2818                  * Convert PortVlXmitWait counter from TXE cycle
2819                  * times to flit times.
2820                  */
2821                 rsp->vls[vfi].port_vl_xmit_wait =
2822                         cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
2823                                                            link_speed,
2824                                                            idx_from_vl(vl)));
2825
2826                 rsp->vls[vfi].port_vl_rcv_fecn =
2827                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2828                                                   idx_from_vl(vl)));
2829
2830                 rsp->vls[vfi].port_vl_rcv_becn =
2831                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2832                                                   idx_from_vl(vl)));
2833
2834                 rsp->vls[vfi].port_vl_xmit_discards =
2835                         cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
2836                                                    idx_from_vl(vl)));
2837                 vlinfo++;
2838                 vfi++;
2839         }
2840
2841         a0_portstatus(ppd, rsp);
2842
2843         if (resp_len)
2844                 *resp_len += response_data_size;
2845
2846         return reply((struct ib_mad_hdr *)pmp);
2847 }
2848
2849 static u64 get_error_counter_summary(struct ib_device *ibdev, u32 port,
2850                                      u8 res_lli, u8 res_ler)
2851 {
2852         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2853         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2854         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2855         u64 error_counter_summary = 0, tmp;
2856
2857         error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2858                                                 CNTR_INVALID_VL);
2859         /* port_rcv_switch_relay_errors is 0 for HFIs */
2860         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD,
2861                                                 CNTR_INVALID_VL);
2862         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2863                                                 CNTR_INVALID_VL);
2864         error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2865                                                CNTR_INVALID_VL);
2866         /* local link integrity must be right-shifted by the lli resolution */
2867         error_counter_summary += (read_dev_cntr(dd, C_DC_RX_REPLAY,
2868                                                 CNTR_INVALID_VL) >> res_lli);
2869         /* link error recovery must b right-shifted by the ler resolution */
2870         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2871         tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
2872         error_counter_summary += (tmp >> res_ler);
2873         error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR,
2874                                                CNTR_INVALID_VL);
2875         error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL);
2876         error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2877                                                CNTR_INVALID_VL);
2878         /* ppd->link_downed is a 32-bit value */
2879         error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN,
2880                                                 CNTR_INVALID_VL);
2881         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2882         /* this is an 8-bit quantity */
2883         error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff;
2884
2885         return error_counter_summary;
2886 }
2887
2888 static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp)
2889 {
2890         if (!is_bx(ppd->dd)) {
2891                 unsigned long vl;
2892                 u64 sum_vl_xmit_wait = 0;
2893                 unsigned long vl_all_mask = VL_MASK_ALL;
2894
2895                 for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) {
2896                         u64 tmp = sum_vl_xmit_wait +
2897                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2898                                                  idx_from_vl(vl));
2899                         if (tmp < sum_vl_xmit_wait) {
2900                                 /* we wrapped */
2901                                 sum_vl_xmit_wait = (u64)~0;
2902                                 break;
2903                         }
2904                         sum_vl_xmit_wait = tmp;
2905                 }
2906                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2907                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2908         }
2909 }
2910
2911 static void pma_get_opa_port_dctrs(struct ib_device *ibdev,
2912                                    struct _port_dctrs *rsp)
2913 {
2914         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2915
2916         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2917                                                 CNTR_INVALID_VL));
2918         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2919                                                 CNTR_INVALID_VL));
2920         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2921                                                 CNTR_INVALID_VL));
2922         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2923                                                 CNTR_INVALID_VL));
2924         rsp->port_multicast_xmit_pkts =
2925                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2926                                           CNTR_INVALID_VL));
2927         rsp->port_multicast_rcv_pkts =
2928                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2929                                           CNTR_INVALID_VL));
2930 }
2931
2932 static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
2933                                     struct ib_device *ibdev,
2934                                     u32 port, u32 *resp_len)
2935 {
2936         struct opa_port_data_counters_msg *req =
2937                 (struct opa_port_data_counters_msg *)pmp->data;
2938         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2939         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2940         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2941         struct _port_dctrs *rsp;
2942         struct _vls_dctrs *vlinfo;
2943         size_t response_data_size;
2944         u32 num_ports;
2945         u8 lq, num_vls;
2946         u8 res_lli, res_ler;
2947         u64 port_mask;
2948         u32 port_num;
2949         unsigned long vl;
2950         unsigned long vl_select_mask;
2951         int vfi;
2952         u16 link_width;
2953         u16 link_speed;
2954
2955         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2956         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2957         vl_select_mask = be32_to_cpu(req->vl_select_mask);
2958         res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT;
2959         res_lli = res_lli ? res_lli + ADD_LLI : 0;
2960         res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT;
2961         res_ler = res_ler ? res_ler + ADD_LER : 0;
2962
2963         if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) {
2964                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2965                 return reply((struct ib_mad_hdr *)pmp);
2966         }
2967
2968         /* Sanity check */
2969         response_data_size = struct_size(req, port.vls, num_vls);
2970
2971         if (response_data_size > sizeof(pmp->data)) {
2972                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2973                 return reply((struct ib_mad_hdr *)pmp);
2974         }
2975
2976         /*
2977          * The bit set in the mask needs to be consistent with the
2978          * port the request came in on.
2979          */
2980         port_mask = be64_to_cpu(req->port_select_mask[3]);
2981         port_num = find_first_bit((unsigned long *)&port_mask,
2982                                   sizeof(port_mask) * 8);
2983
2984         if (port_num != port) {
2985                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2986                 return reply((struct ib_mad_hdr *)pmp);
2987         }
2988
2989         rsp = &req->port;
2990         memset(rsp, 0, sizeof(*rsp));
2991
2992         rsp->port_number = port;
2993         /*
2994          * Note that link_quality_indicator is a 32 bit quantity in
2995          * 'datacounters' queries (as opposed to 'portinfo' queries,
2996          * where it's a byte).
2997          */
2998         hfi1_read_link_quality(dd, &lq);
2999         rsp->link_quality_indicator = cpu_to_be32((u32)lq);
3000         pma_get_opa_port_dctrs(ibdev, rsp);
3001
3002         /*
3003          * Convert PortXmitWait counter from TXE
3004          * cycle times to flit times.
3005          */
3006         link_width =
3007                 tx_link_width(ppd->link_width_downgrade_tx_active);
3008         link_speed = get_link_speed(ppd->link_speed_active);
3009         rsp->port_xmit_wait =
3010                 cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
3011                                                    link_speed, C_VL_COUNT));
3012         rsp->port_rcv_fecn =
3013                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
3014         rsp->port_rcv_becn =
3015                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
3016         rsp->port_error_counter_summary =
3017                 cpu_to_be64(get_error_counter_summary(ibdev, port,
3018                                                       res_lli, res_ler));
3019
3020         vlinfo = &rsp->vls[0];
3021         vfi = 0;
3022         /* The vl_select_mask has been checked above, and we know
3023          * that it contains only entries which represent valid VLs.
3024          * So in the for_each_set_bit() loop below, we don't need
3025          * any additional checks for vl.
3026          */
3027         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
3028                 memset(vlinfo, 0, sizeof(*vlinfo));
3029
3030                 rsp->vls[vfi].port_vl_xmit_data =
3031                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
3032                                                    idx_from_vl(vl)));
3033
3034                 rsp->vls[vfi].port_vl_rcv_data =
3035                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
3036                                                   idx_from_vl(vl)));
3037
3038                 rsp->vls[vfi].port_vl_xmit_pkts =
3039                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
3040                                                    idx_from_vl(vl)));
3041
3042                 rsp->vls[vfi].port_vl_rcv_pkts =
3043                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
3044                                                   idx_from_vl(vl)));
3045
3046                 /*
3047                  * Convert PortVlXmitWait counter from TXE
3048                  * cycle times to flit times.
3049                  */
3050                 rsp->vls[vfi].port_vl_xmit_wait =
3051                         cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
3052                                                            link_speed,
3053                                                            idx_from_vl(vl)));
3054
3055                 rsp->vls[vfi].port_vl_rcv_fecn =
3056                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
3057                                                   idx_from_vl(vl)));
3058                 rsp->vls[vfi].port_vl_rcv_becn =
3059                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
3060                                                   idx_from_vl(vl)));
3061
3062                 /* rsp->port_vl_xmit_time_cong is 0 for HFIs */
3063                 /* rsp->port_vl_xmit_wasted_bw ??? */
3064                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ???
3065                  * does this differ from rsp->vls[vfi].port_vl_xmit_wait
3066                  */
3067                 /*rsp->vls[vfi].port_vl_mark_fecn =
3068                  *      cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT
3069                  *              + offset));
3070                  */
3071                 vlinfo++;
3072                 vfi++;
3073         }
3074
3075         a0_datacounters(ppd, rsp);
3076
3077         if (resp_len)
3078                 *resp_len += response_data_size;
3079
3080         return reply((struct ib_mad_hdr *)pmp);
3081 }
3082
3083 static int pma_get_ib_portcounters_ext(struct ib_pma_mad *pmp,
3084                                        struct ib_device *ibdev, u32 port)
3085 {
3086         struct ib_pma_portcounters_ext *p = (struct ib_pma_portcounters_ext *)
3087                                                 pmp->data;
3088         struct _port_dctrs rsp;
3089
3090         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
3091                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3092                 goto bail;
3093         }
3094
3095         memset(&rsp, 0, sizeof(rsp));
3096         pma_get_opa_port_dctrs(ibdev, &rsp);
3097
3098         p->port_xmit_data = rsp.port_xmit_data;
3099         p->port_rcv_data = rsp.port_rcv_data;
3100         p->port_xmit_packets = rsp.port_xmit_pkts;
3101         p->port_rcv_packets = rsp.port_rcv_pkts;
3102         p->port_unicast_xmit_packets = 0;
3103         p->port_unicast_rcv_packets =  0;
3104         p->port_multicast_xmit_packets = rsp.port_multicast_xmit_pkts;
3105         p->port_multicast_rcv_packets = rsp.port_multicast_rcv_pkts;
3106
3107 bail:
3108         return reply((struct ib_mad_hdr *)pmp);
3109 }
3110
3111 static void pma_get_opa_port_ectrs(struct ib_device *ibdev,
3112                                    struct _port_ectrs *rsp, u32 port)
3113 {
3114         u64 tmp, tmp2;
3115         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3116         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3117         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3118
3119         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
3120         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3121                                         CNTR_INVALID_VL);
3122         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
3123                 /* overflow/wrapped */
3124                 rsp->link_error_recovery = cpu_to_be32(~0);
3125         } else {
3126                 rsp->link_error_recovery = cpu_to_be32(tmp2);
3127         }
3128
3129         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
3130                                                 CNTR_INVALID_VL));
3131         rsp->port_rcv_errors =
3132                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
3133         rsp->port_rcv_remote_physical_errors =
3134                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
3135                                           CNTR_INVALID_VL));
3136         rsp->port_rcv_switch_relay_errors = 0;
3137         rsp->port_xmit_discards =
3138                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
3139                                            CNTR_INVALID_VL));
3140         rsp->port_xmit_constraint_errors =
3141                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
3142                                            CNTR_INVALID_VL));
3143         rsp->port_rcv_constraint_errors =
3144                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
3145                                            CNTR_INVALID_VL));
3146         rsp->local_link_integrity_errors =
3147                 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
3148                                           CNTR_INVALID_VL));
3149         rsp->excessive_buffer_overruns =
3150                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
3151 }
3152
3153 static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
3154                                   struct ib_device *ibdev,
3155                                   u32 port, u32 *resp_len)
3156 {
3157         size_t response_data_size;
3158         struct _port_ectrs *rsp;
3159         u32 port_num;
3160         struct opa_port_error_counters64_msg *req;
3161         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3162         u32 num_ports;
3163         u8 num_pslm;
3164         u8 num_vls;
3165         struct hfi1_ibport *ibp;
3166         struct hfi1_pportdata *ppd;
3167         struct _vls_ectrs *vlinfo;
3168         unsigned long vl;
3169         u64 port_mask, tmp;
3170         unsigned long vl_select_mask;
3171         int vfi;
3172
3173         req = (struct opa_port_error_counters64_msg *)pmp->data;
3174
3175         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3176
3177         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3178         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
3179
3180         if (num_ports != 1 || num_ports != num_pslm) {
3181                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3182                 return reply((struct ib_mad_hdr *)pmp);
3183         }
3184
3185         response_data_size = struct_size(req, port.vls, num_vls);
3186
3187         if (response_data_size > sizeof(pmp->data)) {
3188                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3189                 return reply((struct ib_mad_hdr *)pmp);
3190         }
3191         /*
3192          * The bit set in the mask needs to be consistent with the
3193          * port the request came in on.
3194          */
3195         port_mask = be64_to_cpu(req->port_select_mask[3]);
3196         port_num = find_first_bit((unsigned long *)&port_mask,
3197                                   sizeof(port_mask) * 8);
3198
3199         if (port_num != port) {
3200                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3201                 return reply((struct ib_mad_hdr *)pmp);
3202         }
3203
3204         rsp = &req->port;
3205
3206         ibp = to_iport(ibdev, port_num);
3207         ppd = ppd_from_ibp(ibp);
3208
3209         memset(rsp, 0, sizeof(*rsp));
3210         rsp->port_number = port_num;
3211
3212         pma_get_opa_port_ectrs(ibdev, rsp, port_num);
3213
3214         rsp->port_rcv_remote_physical_errors =
3215                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
3216                                           CNTR_INVALID_VL));
3217         rsp->fm_config_errors =
3218                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
3219                                           CNTR_INVALID_VL));
3220         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
3221
3222         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
3223         rsp->port_rcv_errors =
3224                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
3225         vlinfo = &rsp->vls[0];
3226         vfi = 0;
3227         vl_select_mask = be32_to_cpu(req->vl_select_mask);
3228         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
3229                 memset(vlinfo, 0, sizeof(*vlinfo));
3230                 rsp->vls[vfi].port_vl_xmit_discards =
3231                         cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
3232                                                    idx_from_vl(vl)));
3233                 vlinfo += 1;
3234                 vfi++;
3235         }
3236
3237         if (resp_len)
3238                 *resp_len += response_data_size;
3239
3240         return reply((struct ib_mad_hdr *)pmp);
3241 }
3242
3243 static int pma_get_ib_portcounters(struct ib_pma_mad *pmp,
3244                                    struct ib_device *ibdev, u32 port)
3245 {
3246         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
3247                 pmp->data;
3248         struct _port_ectrs rsp;
3249         u64 temp_link_overrun_errors;
3250         u64 temp_64;
3251         u32 temp_32;
3252
3253         memset(&rsp, 0, sizeof(rsp));
3254         pma_get_opa_port_ectrs(ibdev, &rsp, port);
3255
3256         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
3257                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3258                 goto bail;
3259         }
3260
3261         p->symbol_error_counter = 0; /* N/A for OPA */
3262
3263         temp_32 = be32_to_cpu(rsp.link_error_recovery);
3264         if (temp_32 > 0xFFUL)
3265                 p->link_error_recovery_counter = 0xFF;
3266         else
3267                 p->link_error_recovery_counter = (u8)temp_32;
3268
3269         temp_32 = be32_to_cpu(rsp.link_downed);
3270         if (temp_32 > 0xFFUL)
3271                 p->link_downed_counter = 0xFF;
3272         else
3273                 p->link_downed_counter = (u8)temp_32;
3274
3275         temp_64 = be64_to_cpu(rsp.port_rcv_errors);
3276         if (temp_64 > 0xFFFFUL)
3277                 p->port_rcv_errors = cpu_to_be16(0xFFFF);
3278         else
3279                 p->port_rcv_errors = cpu_to_be16((u16)temp_64);
3280
3281         temp_64 = be64_to_cpu(rsp.port_rcv_remote_physical_errors);
3282         if (temp_64 > 0xFFFFUL)
3283                 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
3284         else
3285                 p->port_rcv_remphys_errors = cpu_to_be16((u16)temp_64);
3286
3287         temp_64 = be64_to_cpu(rsp.port_rcv_switch_relay_errors);
3288         p->port_rcv_switch_relay_errors = cpu_to_be16((u16)temp_64);
3289
3290         temp_64 = be64_to_cpu(rsp.port_xmit_discards);
3291         if (temp_64 > 0xFFFFUL)
3292                 p->port_xmit_discards = cpu_to_be16(0xFFFF);
3293         else
3294                 p->port_xmit_discards = cpu_to_be16((u16)temp_64);
3295
3296         temp_64 = be64_to_cpu(rsp.port_xmit_constraint_errors);
3297         if (temp_64 > 0xFFUL)
3298                 p->port_xmit_constraint_errors = 0xFF;
3299         else
3300                 p->port_xmit_constraint_errors = (u8)temp_64;
3301
3302         temp_64 = be64_to_cpu(rsp.port_rcv_constraint_errors);
3303         if (temp_64 > 0xFFUL)
3304                 p->port_rcv_constraint_errors = 0xFFUL;
3305         else
3306                 p->port_rcv_constraint_errors = (u8)temp_64;
3307
3308         /* LocalLink: 7:4, BufferOverrun: 3:0 */
3309         temp_64 = be64_to_cpu(rsp.local_link_integrity_errors);
3310         if (temp_64 > 0xFUL)
3311                 temp_64 = 0xFUL;
3312
3313         temp_link_overrun_errors = temp_64 << 4;
3314
3315         temp_64 = be64_to_cpu(rsp.excessive_buffer_overruns);
3316         if (temp_64 > 0xFUL)
3317                 temp_64 = 0xFUL;
3318         temp_link_overrun_errors |= temp_64;
3319
3320         p->link_overrun_errors = (u8)temp_link_overrun_errors;
3321
3322         p->vl15_dropped = 0; /* N/A for OPA */
3323
3324 bail:
3325         return reply((struct ib_mad_hdr *)pmp);
3326 }
3327
3328 static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp,
3329                                  struct ib_device *ibdev,
3330                                  u32 port, u32 *resp_len)
3331 {
3332         size_t response_data_size;
3333         struct _port_ei *rsp;
3334         struct opa_port_error_info_msg *req;
3335         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3336         u64 port_mask;
3337         u32 num_ports;
3338         u32 port_num;
3339         u8 num_pslm;
3340         u64 reg;
3341
3342         req = (struct opa_port_error_info_msg *)pmp->data;
3343         rsp = &req->port;
3344
3345         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3346         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3347
3348         memset(rsp, 0, sizeof(*rsp));
3349
3350         if (num_ports != 1 || num_ports != num_pslm) {
3351                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3352                 return reply((struct ib_mad_hdr *)pmp);
3353         }
3354
3355         /* Sanity check */
3356         response_data_size = sizeof(struct opa_port_error_info_msg);
3357
3358         if (response_data_size > sizeof(pmp->data)) {
3359                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3360                 return reply((struct ib_mad_hdr *)pmp);
3361         }
3362
3363         /*
3364          * The bit set in the mask needs to be consistent with the port
3365          * the request came in on.
3366          */
3367         port_mask = be64_to_cpu(req->port_select_mask[3]);
3368         port_num = find_first_bit((unsigned long *)&port_mask,
3369                                   sizeof(port_mask) * 8);
3370
3371         if (port_num != port) {
3372                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3373                 return reply((struct ib_mad_hdr *)pmp);
3374         }
3375         rsp->port_number = port;
3376
3377         /* PortRcvErrorInfo */
3378         rsp->port_rcv_ei.status_and_code =
3379                 dd->err_info_rcvport.status_and_code;
3380         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1,
3381                &dd->err_info_rcvport.packet_flit1, sizeof(u64));
3382         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2,
3383                &dd->err_info_rcvport.packet_flit2, sizeof(u64));
3384
3385         /* ExcessiverBufferOverrunInfo */
3386         reg = read_csr(dd, RCV_ERR_INFO);
3387         if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) {
3388                 /*
3389                  * if the RcvExcessBufferOverrun bit is set, save SC of
3390                  * first pkt that encountered an excess buffer overrun
3391                  */
3392                 u8 tmp = (u8)reg;
3393
3394                 tmp &=  RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK;
3395                 tmp <<= 2;
3396                 rsp->excessive_buffer_overrun_ei.status_and_sc = tmp;
3397                 /* set the status bit */
3398                 rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80;
3399         }
3400
3401         rsp->port_xmit_constraint_ei.status =
3402                 dd->err_info_xmit_constraint.status;
3403         rsp->port_xmit_constraint_ei.pkey =
3404                 cpu_to_be16(dd->err_info_xmit_constraint.pkey);
3405         rsp->port_xmit_constraint_ei.slid =
3406                 cpu_to_be32(dd->err_info_xmit_constraint.slid);
3407
3408         rsp->port_rcv_constraint_ei.status =
3409                 dd->err_info_rcv_constraint.status;
3410         rsp->port_rcv_constraint_ei.pkey =
3411                 cpu_to_be16(dd->err_info_rcv_constraint.pkey);
3412         rsp->port_rcv_constraint_ei.slid =
3413                 cpu_to_be32(dd->err_info_rcv_constraint.slid);
3414
3415         /* UncorrectableErrorInfo */
3416         rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable;
3417
3418         /* FMConfigErrorInfo */
3419         rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig;
3420
3421         if (resp_len)
3422                 *resp_len += response_data_size;
3423
3424         return reply((struct ib_mad_hdr *)pmp);
3425 }
3426
3427 static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
3428                                   struct ib_device *ibdev,
3429                                   u32 port, u32 *resp_len)
3430 {
3431         struct opa_clear_port_status *req =
3432                 (struct opa_clear_port_status *)pmp->data;
3433         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3434         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3435         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3436         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3437         u64 portn = be64_to_cpu(req->port_select_mask[3]);
3438         u32 counter_select = be32_to_cpu(req->counter_select_mask);
3439         unsigned long vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */
3440         unsigned long vl;
3441
3442         if ((nports != 1) || (portn != 1 << port)) {
3443                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3444                 return reply((struct ib_mad_hdr *)pmp);
3445         }
3446         /*
3447          * only counters returned by pma_get_opa_portstatus() are
3448          * handled, so when pma_get_opa_portstatus() gets a fix,
3449          * the corresponding change should be made here as well.
3450          */
3451
3452         if (counter_select & CS_PORT_XMIT_DATA)
3453                 write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0);
3454
3455         if (counter_select & CS_PORT_RCV_DATA)
3456                 write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0);
3457
3458         if (counter_select & CS_PORT_XMIT_PKTS)
3459                 write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3460
3461         if (counter_select & CS_PORT_RCV_PKTS)
3462                 write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0);
3463
3464         if (counter_select & CS_PORT_MCAST_XMIT_PKTS)
3465                 write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3466
3467         if (counter_select & CS_PORT_MCAST_RCV_PKTS)
3468                 write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
3469
3470         if (counter_select & CS_PORT_XMIT_WAIT) {
3471                 write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
3472                 ppd->port_vl_xmit_wait_last[C_VL_COUNT] = 0;
3473                 ppd->vl_xmit_flit_cnt[C_VL_COUNT] = 0;
3474         }
3475         /* ignore cs_sw_portCongestion for HFIs */
3476
3477         if (counter_select & CS_PORT_RCV_FECN)
3478                 write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0);
3479
3480         if (counter_select & CS_PORT_RCV_BECN)
3481                 write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0);
3482
3483         /* ignore cs_port_xmit_time_cong for HFIs */
3484         /* ignore cs_port_xmit_wasted_bw for now */
3485         /* ignore cs_port_xmit_wait_data for now */
3486         if (counter_select & CS_PORT_RCV_BUBBLE)
3487                 write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0);
3488
3489         /* Only applicable for switch */
3490         /* if (counter_select & CS_PORT_MARK_FECN)
3491          *      write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);
3492          */
3493
3494         if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS)
3495                 write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0);
3496
3497         /* ignore cs_port_rcv_switch_relay_errors for HFIs */
3498         if (counter_select & CS_PORT_XMIT_DISCARDS)
3499                 write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0);
3500
3501         if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS)
3502                 write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0);
3503
3504         if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
3505                 write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
3506
3507         if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS)
3508                 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3509
3510         if (counter_select & CS_LINK_ERROR_RECOVERY) {
3511                 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3512                 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3513                                CNTR_INVALID_VL, 0);
3514         }
3515
3516         if (counter_select & CS_PORT_RCV_ERRORS)
3517                 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3518
3519         if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) {
3520                 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3521                 dd->rcv_ovfl_cnt = 0;
3522         }
3523
3524         if (counter_select & CS_FM_CONFIG_ERRORS)
3525                 write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0);
3526
3527         if (counter_select & CS_LINK_DOWNED)
3528                 write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0);
3529
3530         if (counter_select & CS_UNCORRECTABLE_ERRORS)
3531                 write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0);
3532
3533         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
3534                 if (counter_select & CS_PORT_XMIT_DATA)
3535                         write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0);
3536
3537                 if (counter_select & CS_PORT_RCV_DATA)
3538                         write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0);
3539
3540                 if (counter_select & CS_PORT_XMIT_PKTS)
3541                         write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0);
3542
3543                 if (counter_select & CS_PORT_RCV_PKTS)
3544                         write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
3545
3546                 if (counter_select & CS_PORT_XMIT_WAIT) {
3547                         write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
3548                         ppd->port_vl_xmit_wait_last[idx_from_vl(vl)] = 0;
3549                         ppd->vl_xmit_flit_cnt[idx_from_vl(vl)] = 0;
3550                 }
3551
3552                 /* sw_port_vl_congestion is 0 for HFIs */
3553                 if (counter_select & CS_PORT_RCV_FECN)
3554                         write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0);
3555
3556                 if (counter_select & CS_PORT_RCV_BECN)
3557                         write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0);
3558
3559                 /* port_vl_xmit_time_cong is 0 for HFIs */
3560                 /* port_vl_xmit_wasted_bw ??? */
3561                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */
3562                 if (counter_select & CS_PORT_RCV_BUBBLE)
3563                         write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0);
3564
3565                 /* if (counter_select & CS_PORT_MARK_FECN)
3566                  *     write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
3567                  */
3568                 if (counter_select & C_SW_XMIT_DSCD_VL)
3569                         write_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
3570                                         idx_from_vl(vl), 0);
3571         }
3572
3573         if (resp_len)
3574                 *resp_len += sizeof(*req);
3575
3576         return reply((struct ib_mad_hdr *)pmp);
3577 }
3578
3579 static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp,
3580                                  struct ib_device *ibdev,
3581                                  u32 port, u32 *resp_len)
3582 {
3583         struct _port_ei *rsp;
3584         struct opa_port_error_info_msg *req;
3585         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3586         u64 port_mask;
3587         u32 num_ports;
3588         u32 port_num;
3589         u8 num_pslm;
3590         u32 error_info_select;
3591
3592         req = (struct opa_port_error_info_msg *)pmp->data;
3593         rsp = &req->port;
3594
3595         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3596         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3597
3598         memset(rsp, 0, sizeof(*rsp));
3599
3600         if (num_ports != 1 || num_ports != num_pslm) {
3601                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3602                 return reply((struct ib_mad_hdr *)pmp);
3603         }
3604
3605         /*
3606          * The bit set in the mask needs to be consistent with the port
3607          * the request came in on.
3608          */
3609         port_mask = be64_to_cpu(req->port_select_mask[3]);
3610         port_num = find_first_bit((unsigned long *)&port_mask,
3611                                   sizeof(port_mask) * 8);
3612
3613         if (port_num != port) {
3614                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3615                 return reply((struct ib_mad_hdr *)pmp);
3616         }
3617
3618         error_info_select = be32_to_cpu(req->error_info_select_mask);
3619
3620         /* PortRcvErrorInfo */
3621         if (error_info_select & ES_PORT_RCV_ERROR_INFO)
3622                 /* turn off status bit */
3623                 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3624
3625         /* ExcessiverBufferOverrunInfo */
3626         if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO)
3627                 /*
3628                  * status bit is essentially kept in the h/w - bit 5 of
3629                  * RCV_ERR_INFO
3630                  */
3631                 write_csr(dd, RCV_ERR_INFO,
3632                           RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK);
3633
3634         if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO)
3635                 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3636
3637         if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO)
3638                 dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK;
3639
3640         /* UncorrectableErrorInfo */
3641         if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO)
3642                 /* turn off status bit */
3643                 dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK;
3644
3645         /* FMConfigErrorInfo */
3646         if (error_info_select & ES_FM_CONFIG_ERROR_INFO)
3647                 /* turn off status bit */
3648                 dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK;
3649
3650         if (resp_len)
3651                 *resp_len += sizeof(*req);
3652
3653         return reply((struct ib_mad_hdr *)pmp);
3654 }
3655
3656 struct opa_congestion_info_attr {
3657         __be16 congestion_info;
3658         u8 control_table_cap;   /* Multiple of 64 entry unit CCTs */
3659         u8 congestion_log_length;
3660 } __packed;
3661
3662 static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data,
3663                                     struct ib_device *ibdev, u32 port,
3664                                     u32 *resp_len, u32 max_len)
3665 {
3666         struct opa_congestion_info_attr *p =
3667                 (struct opa_congestion_info_attr *)data;
3668         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3669         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3670
3671         if (smp_length_check(sizeof(*p), max_len)) {
3672                 smp->status |= IB_SMP_INVALID_FIELD;
3673                 return reply((struct ib_mad_hdr *)smp);
3674         }
3675
3676         p->congestion_info = 0;
3677         p->control_table_cap = ppd->cc_max_table_entries;
3678         p->congestion_log_length = OPA_CONG_LOG_ELEMS;
3679
3680         if (resp_len)
3681                 *resp_len += sizeof(*p);
3682
3683         return reply((struct ib_mad_hdr *)smp);
3684 }
3685
3686 static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am,
3687                                        u8 *data, struct ib_device *ibdev,
3688                                        u32 port, u32 *resp_len, u32 max_len)
3689 {
3690         int i;
3691         struct opa_congestion_setting_attr *p =
3692                 (struct opa_congestion_setting_attr *)data;
3693         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3694         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3695         struct opa_congestion_setting_entry_shadow *entries;
3696         struct cc_state *cc_state;
3697
3698         if (smp_length_check(sizeof(*p), max_len)) {
3699                 smp->status |= IB_SMP_INVALID_FIELD;
3700                 return reply((struct ib_mad_hdr *)smp);
3701         }
3702
3703         rcu_read_lock();
3704
3705         cc_state = get_cc_state(ppd);
3706
3707         if (!cc_state) {
3708                 rcu_read_unlock();
3709                 return reply((struct ib_mad_hdr *)smp);
3710         }
3711
3712         entries = cc_state->cong_setting.entries;
3713         p->port_control = cpu_to_be16(cc_state->cong_setting.port_control);
3714         p->control_map = cpu_to_be32(cc_state->cong_setting.control_map);
3715         for (i = 0; i < OPA_MAX_SLS; i++) {
3716                 p->entries[i].ccti_increase = entries[i].ccti_increase;
3717                 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
3718                 p->entries[i].trigger_threshold =
3719                         entries[i].trigger_threshold;
3720                 p->entries[i].ccti_min = entries[i].ccti_min;
3721         }
3722
3723         rcu_read_unlock();
3724
3725         if (resp_len)
3726                 *resp_len += sizeof(*p);
3727
3728         return reply((struct ib_mad_hdr *)smp);
3729 }
3730
3731 /*
3732  * Apply congestion control information stored in the ppd to the
3733  * active structure.
3734  */
3735 static void apply_cc_state(struct hfi1_pportdata *ppd)
3736 {
3737         struct cc_state *old_cc_state, *new_cc_state;
3738
3739         new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL);
3740         if (!new_cc_state)
3741                 return;
3742
3743         /*
3744          * Hold the lock for updating *and* to prevent ppd information
3745          * from changing during the update.
3746          */
3747         spin_lock(&ppd->cc_state_lock);
3748
3749         old_cc_state = get_cc_state_protected(ppd);
3750         if (!old_cc_state) {
3751                 /* never active, or shutting down */
3752                 spin_unlock(&ppd->cc_state_lock);
3753                 kfree(new_cc_state);
3754                 return;
3755         }
3756
3757         *new_cc_state = *old_cc_state;
3758
3759         if (ppd->total_cct_entry)
3760                 new_cc_state->cct.ccti_limit = ppd->total_cct_entry - 1;
3761         else
3762                 new_cc_state->cct.ccti_limit = 0;
3763
3764         memcpy(new_cc_state->cct.entries, ppd->ccti_entries,
3765                ppd->total_cct_entry * sizeof(struct ib_cc_table_entry));
3766
3767         new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED;
3768         new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map;
3769         memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries,
3770                OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry));
3771
3772         rcu_assign_pointer(ppd->cc_state, new_cc_state);
3773
3774         spin_unlock(&ppd->cc_state_lock);
3775
3776         kfree_rcu(old_cc_state, rcu);
3777 }
3778
3779 static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data,
3780                                        struct ib_device *ibdev, u32 port,
3781                                        u32 *resp_len, u32 max_len)
3782 {
3783         struct opa_congestion_setting_attr *p =
3784                 (struct opa_congestion_setting_attr *)data;
3785         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3786         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3787         struct opa_congestion_setting_entry_shadow *entries;
3788         int i;
3789
3790         if (smp_length_check(sizeof(*p), max_len)) {
3791                 smp->status |= IB_SMP_INVALID_FIELD;
3792                 return reply((struct ib_mad_hdr *)smp);
3793         }
3794
3795         /*
3796          * Save details from packet into the ppd.  Hold the cc_state_lock so
3797          * our information is consistent with anyone trying to apply the state.
3798          */
3799         spin_lock(&ppd->cc_state_lock);
3800         ppd->cc_sl_control_map = be32_to_cpu(p->control_map);
3801
3802         entries = ppd->congestion_entries;
3803         for (i = 0; i < OPA_MAX_SLS; i++) {
3804                 entries[i].ccti_increase = p->entries[i].ccti_increase;
3805                 entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer);
3806                 entries[i].trigger_threshold =
3807                         p->entries[i].trigger_threshold;
3808                 entries[i].ccti_min = p->entries[i].ccti_min;
3809         }
3810         spin_unlock(&ppd->cc_state_lock);
3811
3812         /* now apply the information */
3813         apply_cc_state(ppd);
3814
3815         return __subn_get_opa_cong_setting(smp, am, data, ibdev, port,
3816                                            resp_len, max_len);
3817 }
3818
3819 static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am,
3820                                         u8 *data, struct ib_device *ibdev,
3821                                         u32 port, u32 *resp_len, u32 max_len)
3822 {
3823         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3824         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3825         struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data;
3826         u64 ts;
3827         int i;
3828
3829         if (am || smp_length_check(sizeof(*cong_log), max_len)) {
3830                 smp->status |= IB_SMP_INVALID_FIELD;
3831                 return reply((struct ib_mad_hdr *)smp);
3832         }
3833
3834         spin_lock_irq(&ppd->cc_log_lock);
3835
3836         cong_log->log_type = OPA_CC_LOG_TYPE_HFI;
3837         cong_log->congestion_flags = 0;
3838         cong_log->threshold_event_counter =
3839                 cpu_to_be16(ppd->threshold_event_counter);
3840         memcpy(cong_log->threshold_cong_event_map,
3841                ppd->threshold_cong_event_map,
3842                sizeof(cong_log->threshold_cong_event_map));
3843         /* keep timestamp in units of 1.024 usec */
3844         ts = ktime_get_ns() / 1024;
3845         cong_log->current_time_stamp = cpu_to_be32(ts);
3846         for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) {
3847                 struct opa_hfi1_cong_log_event_internal *cce =
3848                         &ppd->cc_events[ppd->cc_mad_idx++];
3849                 if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS)
3850                         ppd->cc_mad_idx = 0;
3851                 /*
3852                  * Entries which are older than twice the time
3853                  * required to wrap the counter are supposed to
3854                  * be zeroed (CA10-49 IBTA, release 1.2.1, V1).
3855                  */
3856                 if ((ts - cce->timestamp) / 2 > U32_MAX)
3857                         continue;
3858                 memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3);
3859                 memcpy(cong_log->events[i].remote_qp_number_cn_entry,
3860                        &cce->rqpn, 3);
3861                 cong_log->events[i].sl_svc_type_cn_entry =
3862                         ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7);
3863                 cong_log->events[i].remote_lid_cn_entry =
3864                         cpu_to_be32(cce->rlid);
3865                 cong_log->events[i].timestamp_cn_entry =
3866                         cpu_to_be32(cce->timestamp);
3867         }
3868
3869         /*
3870          * Reset threshold_cong_event_map, and threshold_event_counter
3871          * to 0 when log is read.
3872          */
3873         memset(ppd->threshold_cong_event_map, 0x0,
3874                sizeof(ppd->threshold_cong_event_map));
3875         ppd->threshold_event_counter = 0;
3876
3877         spin_unlock_irq(&ppd->cc_log_lock);
3878
3879         if (resp_len)
3880                 *resp_len += sizeof(struct opa_hfi1_cong_log);
3881
3882         return reply((struct ib_mad_hdr *)smp);
3883 }
3884
3885 static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3886                                    struct ib_device *ibdev, u32 port,
3887                                    u32 *resp_len, u32 max_len)
3888 {
3889         struct ib_cc_table_attr *cc_table_attr =
3890                 (struct ib_cc_table_attr *)data;
3891         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3892         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3893         u32 start_block = OPA_AM_START_BLK(am);
3894         u32 n_blocks = OPA_AM_NBLK(am);
3895         struct ib_cc_table_entry_shadow *entries;
3896         int i, j;
3897         u32 sentry, eentry;
3898         struct cc_state *cc_state;
3899         u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
3900
3901         /* sanity check n_blocks, start_block */
3902         if (n_blocks == 0 || smp_length_check(size, max_len) ||
3903             start_block + n_blocks > ppd->cc_max_table_entries) {
3904                 smp->status |= IB_SMP_INVALID_FIELD;
3905                 return reply((struct ib_mad_hdr *)smp);
3906         }
3907
3908         rcu_read_lock();
3909
3910         cc_state = get_cc_state(ppd);
3911
3912         if (!cc_state) {
3913                 rcu_read_unlock();
3914                 return reply((struct ib_mad_hdr *)smp);
3915         }
3916
3917         sentry = start_block * IB_CCT_ENTRIES;
3918         eentry = sentry + (IB_CCT_ENTRIES * n_blocks);
3919
3920         cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit);
3921
3922         entries = cc_state->cct.entries;
3923
3924         /* return n_blocks, though the last block may not be full */
3925         for (j = 0, i = sentry; i < eentry; j++, i++)
3926                 cc_table_attr->ccti_entries[j].entry =
3927                         cpu_to_be16(entries[i].entry);
3928
3929         rcu_read_unlock();
3930
3931         if (resp_len)
3932                 *resp_len += size;
3933
3934         return reply((struct ib_mad_hdr *)smp);
3935 }
3936
3937 static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3938                                    struct ib_device *ibdev, u32 port,
3939                                    u32 *resp_len, u32 max_len)
3940 {
3941         struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data;
3942         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3943         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3944         u32 start_block = OPA_AM_START_BLK(am);
3945         u32 n_blocks = OPA_AM_NBLK(am);
3946         struct ib_cc_table_entry_shadow *entries;
3947         int i, j;
3948         u32 sentry, eentry;
3949         u16 ccti_limit;
3950         u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
3951
3952         /* sanity check n_blocks, start_block */
3953         if (n_blocks == 0 || smp_length_check(size, max_len) ||
3954             start_block + n_blocks > ppd->cc_max_table_entries) {
3955                 smp->status |= IB_SMP_INVALID_FIELD;
3956                 return reply((struct ib_mad_hdr *)smp);
3957         }
3958
3959         sentry = start_block * IB_CCT_ENTRIES;
3960         eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) +
3961                  (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1;
3962
3963         /* sanity check ccti_limit */
3964         ccti_limit = be16_to_cpu(p->ccti_limit);
3965         if (ccti_limit + 1 > eentry) {
3966                 smp->status |= IB_SMP_INVALID_FIELD;
3967                 return reply((struct ib_mad_hdr *)smp);
3968         }
3969
3970         /*
3971          * Save details from packet into the ppd.  Hold the cc_state_lock so
3972          * our information is consistent with anyone trying to apply the state.
3973          */
3974         spin_lock(&ppd->cc_state_lock);
3975         ppd->total_cct_entry = ccti_limit + 1;
3976         entries = ppd->ccti_entries;
3977         for (j = 0, i = sentry; i < eentry; j++, i++)
3978                 entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry);
3979         spin_unlock(&ppd->cc_state_lock);
3980
3981         /* now apply the information */
3982         apply_cc_state(ppd);
3983
3984         return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len,
3985                                        max_len);
3986 }
3987
3988 struct opa_led_info {
3989         __be32 rsvd_led_mask;
3990         __be32 rsvd;
3991 };
3992
3993 #define OPA_LED_SHIFT   31
3994 #define OPA_LED_MASK    BIT(OPA_LED_SHIFT)
3995
3996 static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3997                                    struct ib_device *ibdev, u32 port,
3998                                    u32 *resp_len, u32 max_len)
3999 {
4000         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
4001         struct hfi1_pportdata *ppd = dd->pport;
4002         struct opa_led_info *p = (struct opa_led_info *)data;
4003         u32 nport = OPA_AM_NPORT(am);
4004         u32 is_beaconing_active;
4005
4006         if (nport != 1 || smp_length_check(sizeof(*p), max_len)) {
4007                 smp->status |= IB_SMP_INVALID_FIELD;
4008                 return reply((struct ib_mad_hdr *)smp);
4009         }
4010
4011         /*
4012          * This pairs with the memory barrier in hfi1_start_led_override to
4013          * ensure that we read the correct state of LED beaconing represented
4014          * by led_override_timer_active
4015          */
4016         smp_rmb();
4017         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
4018         p->rsvd_led_mask = cpu_to_be32(is_beaconing_active << OPA_LED_SHIFT);
4019
4020         if (resp_len)
4021                 *resp_len += sizeof(struct opa_led_info);
4022
4023         return reply((struct ib_mad_hdr *)smp);
4024 }
4025
4026 static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
4027                                    struct ib_device *ibdev, u32 port,
4028                                    u32 *resp_len, u32 max_len)
4029 {
4030         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
4031         struct opa_led_info *p = (struct opa_led_info *)data;
4032         u32 nport = OPA_AM_NPORT(am);
4033         int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK);
4034
4035         if (nport != 1 || smp_length_check(sizeof(*p), max_len)) {
4036                 smp->status |= IB_SMP_INVALID_FIELD;
4037                 return reply((struct ib_mad_hdr *)smp);
4038         }
4039
4040         if (on)
4041                 hfi1_start_led_override(dd->pport, 2000, 1500);
4042         else
4043                 shutdown_led_override(dd->pport);
4044
4045         return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len,
4046                                        max_len);
4047 }
4048
4049 static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
4050                             u8 *data, struct ib_device *ibdev, u32 port,
4051                             u32 *resp_len, u32 max_len)
4052 {
4053         int ret;
4054         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4055
4056         switch (attr_id) {
4057         case IB_SMP_ATTR_NODE_DESC:
4058                 ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port,
4059                                               resp_len, max_len);
4060                 break;
4061         case IB_SMP_ATTR_NODE_INFO:
4062                 ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port,
4063                                               resp_len, max_len);
4064                 break;
4065         case IB_SMP_ATTR_PORT_INFO:
4066                 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port,
4067                                               resp_len, max_len);
4068                 break;
4069         case IB_SMP_ATTR_PKEY_TABLE:
4070                 ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port,
4071                                                resp_len, max_len);
4072                 break;
4073         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
4074                 ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port,
4075                                               resp_len, max_len);
4076                 break;
4077         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
4078                 ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port,
4079                                               resp_len, max_len);
4080                 break;
4081         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
4082                 ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port,
4083                                                resp_len, max_len);
4084                 break;
4085         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
4086                 ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
4087                                                 resp_len, max_len);
4088                 break;
4089         case OPA_ATTRIB_ID_PORT_STATE_INFO:
4090                 ret = __subn_get_opa_psi(smp, am, data, ibdev, port,
4091                                          resp_len, max_len);
4092                 break;
4093         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
4094                 ret = __subn_get_opa_bct(smp, am, data, ibdev, port,
4095                                          resp_len, max_len);
4096                 break;
4097         case OPA_ATTRIB_ID_CABLE_INFO:
4098                 ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port,
4099                                                 resp_len, max_len);
4100                 break;
4101         case IB_SMP_ATTR_VL_ARB_TABLE:
4102                 ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port,
4103                                             resp_len, max_len);
4104                 break;
4105         case OPA_ATTRIB_ID_CONGESTION_INFO:
4106                 ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port,
4107                                                resp_len, max_len);
4108                 break;
4109         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
4110                 ret = __subn_get_opa_cong_setting(smp, am, data, ibdev,
4111                                                   port, resp_len, max_len);
4112                 break;
4113         case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
4114                 ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev,
4115                                                    port, resp_len, max_len);
4116                 break;
4117         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
4118                 ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port,
4119                                               resp_len, max_len);
4120                 break;
4121         case IB_SMP_ATTR_LED_INFO:
4122                 ret = __subn_get_opa_led_info(smp, am, data, ibdev, port,
4123                                               resp_len, max_len);
4124                 break;
4125         case IB_SMP_ATTR_SM_INFO:
4126                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
4127                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
4128                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
4129                         return IB_MAD_RESULT_SUCCESS;
4130                 fallthrough;
4131         default:
4132                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
4133                 ret = reply((struct ib_mad_hdr *)smp);
4134                 break;
4135         }
4136         return ret;
4137 }
4138
4139 static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
4140                             u8 *data, struct ib_device *ibdev, u32 port,
4141                             u32 *resp_len, u32 max_len, int local_mad)
4142 {
4143         int ret;
4144         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4145
4146         switch (attr_id) {
4147         case IB_SMP_ATTR_PORT_INFO:
4148                 ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port,
4149                                               resp_len, max_len, local_mad);
4150                 break;
4151         case IB_SMP_ATTR_PKEY_TABLE:
4152                 ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port,
4153                                                resp_len, max_len);
4154                 break;
4155         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
4156                 ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port,
4157                                               resp_len, max_len);
4158                 break;
4159         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
4160                 ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port,
4161                                               resp_len, max_len);
4162                 break;
4163         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
4164                 ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port,
4165                                                resp_len, max_len);
4166                 break;
4167         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
4168                 ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port,
4169                                                 resp_len, max_len);
4170                 break;
4171         case OPA_ATTRIB_ID_PORT_STATE_INFO:
4172                 ret = __subn_set_opa_psi(smp, am, data, ibdev, port,
4173                                          resp_len, max_len, local_mad);
4174                 break;
4175         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
4176                 ret = __subn_set_opa_bct(smp, am, data, ibdev, port,
4177                                          resp_len, max_len);
4178                 break;
4179         case IB_SMP_ATTR_VL_ARB_TABLE:
4180                 ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port,
4181                                             resp_len, max_len);
4182                 break;
4183         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
4184                 ret = __subn_set_opa_cong_setting(smp, am, data, ibdev,
4185                                                   port, resp_len, max_len);
4186                 break;
4187         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
4188                 ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port,
4189                                               resp_len, max_len);
4190                 break;
4191         case IB_SMP_ATTR_LED_INFO:
4192                 ret = __subn_set_opa_led_info(smp, am, data, ibdev, port,
4193                                               resp_len, max_len);
4194                 break;
4195         case IB_SMP_ATTR_SM_INFO:
4196                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
4197                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
4198                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
4199                         return IB_MAD_RESULT_SUCCESS;
4200                 fallthrough;
4201         default:
4202                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
4203                 ret = reply((struct ib_mad_hdr *)smp);
4204                 break;
4205         }
4206         return ret;
4207 }
4208
4209 static inline void set_aggr_error(struct opa_aggregate *ag)
4210 {
4211         ag->err_reqlength |= cpu_to_be16(0x8000);
4212 }
4213
4214 static int subn_get_opa_aggregate(struct opa_smp *smp,
4215                                   struct ib_device *ibdev, u32 port,
4216                                   u32 *resp_len)
4217 {
4218         int i;
4219         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
4220         u8 *next_smp = opa_get_smp_data(smp);
4221
4222         if (num_attr < 1 || num_attr > 117) {
4223                 smp->status |= IB_SMP_INVALID_FIELD;
4224                 return reply((struct ib_mad_hdr *)smp);
4225         }
4226
4227         for (i = 0; i < num_attr; i++) {
4228                 struct opa_aggregate *agg;
4229                 size_t agg_data_len;
4230                 size_t agg_size;
4231                 u32 am;
4232
4233                 agg = (struct opa_aggregate *)next_smp;
4234                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
4235                 agg_size = sizeof(*agg) + agg_data_len;
4236                 am = be32_to_cpu(agg->attr_mod);
4237
4238                 *resp_len += agg_size;
4239
4240                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
4241                         smp->status |= IB_SMP_INVALID_FIELD;
4242                         return reply((struct ib_mad_hdr *)smp);
4243                 }
4244
4245                 /* zero the payload for this segment */
4246                 memset(next_smp + sizeof(*agg), 0, agg_data_len);
4247
4248                 (void)subn_get_opa_sma(agg->attr_id, smp, am, agg->data,
4249                                        ibdev, port, NULL, (u32)agg_data_len);
4250
4251                 if (smp->status & IB_SMP_INVALID_FIELD)
4252                         break;
4253                 if (smp->status & ~IB_SMP_DIRECTION) {
4254                         set_aggr_error(agg);
4255                         return reply((struct ib_mad_hdr *)smp);
4256                 }
4257                 next_smp += agg_size;
4258         }
4259
4260         return reply((struct ib_mad_hdr *)smp);
4261 }
4262
4263 static int subn_set_opa_aggregate(struct opa_smp *smp,
4264                                   struct ib_device *ibdev, u32 port,
4265                                   u32 *resp_len, int local_mad)
4266 {
4267         int i;
4268         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
4269         u8 *next_smp = opa_get_smp_data(smp);
4270
4271         if (num_attr < 1 || num_attr > 117) {
4272                 smp->status |= IB_SMP_INVALID_FIELD;
4273                 return reply((struct ib_mad_hdr *)smp);
4274         }
4275
4276         for (i = 0; i < num_attr; i++) {
4277                 struct opa_aggregate *agg;
4278                 size_t agg_data_len;
4279                 size_t agg_size;
4280                 u32 am;
4281
4282                 agg = (struct opa_aggregate *)next_smp;
4283                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
4284                 agg_size = sizeof(*agg) + agg_data_len;
4285                 am = be32_to_cpu(agg->attr_mod);
4286
4287                 *resp_len += agg_size;
4288
4289                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
4290                         smp->status |= IB_SMP_INVALID_FIELD;
4291                         return reply((struct ib_mad_hdr *)smp);
4292                 }
4293
4294                 (void)subn_set_opa_sma(agg->attr_id, smp, am, agg->data,
4295                                        ibdev, port, NULL, (u32)agg_data_len,
4296                                        local_mad);
4297
4298                 if (smp->status & IB_SMP_INVALID_FIELD)
4299                         break;
4300                 if (smp->status & ~IB_SMP_DIRECTION) {
4301                         set_aggr_error(agg);
4302                         return reply((struct ib_mad_hdr *)smp);
4303                 }
4304                 next_smp += agg_size;
4305         }
4306
4307         return reply((struct ib_mad_hdr *)smp);
4308 }
4309
4310 /*
4311  * OPAv1 specifies that, on the transition to link up, these counters
4312  * are cleared:
4313  *   PortRcvErrors [*]
4314  *   LinkErrorRecovery
4315  *   LocalLinkIntegrityErrors
4316  *   ExcessiveBufferOverruns [*]
4317  *
4318  * [*] Error info associated with these counters is retained, but the
4319  * error info status is reset to 0.
4320  */
4321 void clear_linkup_counters(struct hfi1_devdata *dd)
4322 {
4323         /* PortRcvErrors */
4324         write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
4325         dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
4326         /* LinkErrorRecovery */
4327         write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
4328         write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
4329         /* LocalLinkIntegrityErrors */
4330         write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
4331         /* ExcessiveBufferOverruns */
4332         write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
4333         dd->rcv_ovfl_cnt = 0;
4334         dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
4335 }
4336
4337 static int is_full_mgmt_pkey_in_table(struct hfi1_ibport *ibp)
4338 {
4339         unsigned int i;
4340         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4341
4342         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i)
4343                 if (ppd->pkeys[i] == FULL_MGMT_P_KEY)
4344                         return 1;
4345
4346         return 0;
4347 }
4348
4349 /*
4350  * is_local_mad() returns 1 if 'mad' is sent from, and destined to the
4351  * local node, 0 otherwise.
4352  */
4353 static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad,
4354                         const struct ib_wc *in_wc)
4355 {
4356         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4357         const struct opa_smp *smp = (const struct opa_smp *)mad;
4358
4359         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
4360                 return (smp->hop_cnt == 0 &&
4361                         smp->route.dr.dr_slid == OPA_LID_PERMISSIVE &&
4362                         smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE);
4363         }
4364
4365         return (in_wc->slid == ppd->lid);
4366 }
4367
4368 /*
4369  * opa_local_smp_check() should only be called on MADs for which
4370  * is_local_mad() returns true. It applies the SMP checks that are
4371  * specific to SMPs which are sent from, and destined to this node.
4372  * opa_local_smp_check() returns 0 if the SMP passes its checks, 1
4373  * otherwise.
4374  *
4375  * SMPs which arrive from other nodes are instead checked by
4376  * opa_smp_check().
4377  */
4378 static int opa_local_smp_check(struct hfi1_ibport *ibp,
4379                                const struct ib_wc *in_wc)
4380 {
4381         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
4382         u16 pkey;
4383
4384         if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))
4385                 return 1;
4386
4387         pkey = ppd->pkeys[in_wc->pkey_index];
4388         /*
4389          * We need to do the "node-local" checks specified in OPAv1,
4390          * rev 0.90, section 9.10.26, which are:
4391          *   - pkey is 0x7fff, or 0xffff
4392          *   - Source QPN == 0 || Destination QPN == 0
4393          *   - the MAD header's management class is either
4394          *     IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or
4395          *     IB_MGMT_CLASS_SUBN_LID_ROUTED
4396          *   - SLID != 0
4397          *
4398          * However, we know (and so don't need to check again) that,
4399          * for local SMPs, the MAD stack passes MADs with:
4400          *   - Source QPN of 0
4401          *   - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4402          *   - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or
4403          *     our own port's lid
4404          *
4405          */
4406         if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY)
4407                 return 0;
4408         ingress_pkey_table_fail(ppd, pkey, in_wc->slid);
4409         return 1;
4410 }
4411
4412 /**
4413  * hfi1_pkey_validation_pma - It validates PKEYs for incoming PMA MAD packets.
4414  * @ibp: IB port data
4415  * @in_mad: MAD packet with header and data
4416  * @in_wc: Work completion data such as source LID, port number, etc.
4417  *
4418  * These are all the possible logic rules for validating a pkey:
4419  *
4420  * a) If pkey neither FULL_MGMT_P_KEY nor LIM_MGMT_P_KEY,
4421  *    and NOT self-originated packet:
4422  *     Drop MAD packet as it should always be part of the
4423  *     management partition unless it's a self-originated packet.
4424  *
4425  * b) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY in pkey table:
4426  *     The packet is coming from a management node and the receiving node
4427  *     is also a management node, so it is safe for the packet to go through.
4428  *
4429  * c) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY is NOT in pkey table:
4430  *     Drop the packet as LIM_MGMT_P_KEY should always be in the pkey table.
4431  *     It could be an FM misconfiguration.
4432  *
4433  * d) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY is NOT in pkey table:
4434  *     It is safe for the packet to go through since a non-management node is
4435  *     talking to another non-management node.
4436  *
4437  * e) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY in pkey table:
4438  *     Drop the packet because a non-management node is talking to a
4439  *     management node, and it could be an attack.
4440  *
4441  * For the implementation, these rules can be simplied to only checking
4442  * for (a) and (e). There's no need to check for rule (b) as
4443  * the packet doesn't need to be dropped. Rule (c) is not possible in
4444  * the driver as LIM_MGMT_P_KEY is always in the pkey table.
4445  *
4446  * Return:
4447  * 0 - pkey is okay, -EINVAL it's a bad pkey
4448  */
4449 static int hfi1_pkey_validation_pma(struct hfi1_ibport *ibp,
4450                                     const struct opa_mad *in_mad,
4451                                     const struct ib_wc *in_wc)
4452 {
4453         u16 pkey_value = hfi1_lookup_pkey_value(ibp, in_wc->pkey_index);
4454
4455         /* Rule (a) from above */
4456         if (!is_local_mad(ibp, in_mad, in_wc) &&
4457             pkey_value != LIM_MGMT_P_KEY &&
4458             pkey_value != FULL_MGMT_P_KEY)
4459                 return -EINVAL;
4460
4461         /* Rule (e) from above */
4462         if (pkey_value == LIM_MGMT_P_KEY &&
4463             is_full_mgmt_pkey_in_table(ibp))
4464                 return -EINVAL;
4465
4466         return 0;
4467 }
4468
4469 static int process_subn_opa(struct ib_device *ibdev, int mad_flags,
4470                             u32 port, const struct opa_mad *in_mad,
4471                             struct opa_mad *out_mad,
4472                             u32 *resp_len, int local_mad)
4473 {
4474         struct opa_smp *smp = (struct opa_smp *)out_mad;
4475         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4476         u8 *data;
4477         u32 am, data_size;
4478         __be16 attr_id;
4479         int ret;
4480
4481         *out_mad = *in_mad;
4482         data = opa_get_smp_data(smp);
4483         data_size = (u32)opa_get_smp_data_size(smp);
4484
4485         am = be32_to_cpu(smp->attr_mod);
4486         attr_id = smp->attr_id;
4487         if (smp->class_version != OPA_SM_CLASS_VERSION) {
4488                 smp->status |= IB_SMP_UNSUP_VERSION;
4489                 ret = reply((struct ib_mad_hdr *)smp);
4490                 return ret;
4491         }
4492         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey,
4493                          smp->route.dr.dr_slid, smp->route.dr.return_path,
4494                          smp->hop_cnt);
4495         if (ret) {
4496                 u32 port_num = be32_to_cpu(smp->attr_mod);
4497
4498                 /*
4499                  * If this is a get/set portinfo, we already check the
4500                  * M_Key if the MAD is for another port and the M_Key
4501                  * is OK on the receiving port. This check is needed
4502                  * to increment the error counters when the M_Key
4503                  * fails to match on *both* ports.
4504                  */
4505                 if (attr_id == IB_SMP_ATTR_PORT_INFO &&
4506                     (smp->method == IB_MGMT_METHOD_GET ||
4507                      smp->method == IB_MGMT_METHOD_SET) &&
4508                     port_num && port_num <= ibdev->phys_port_cnt &&
4509                     port != port_num)
4510                         (void)check_mkey(to_iport(ibdev, port_num),
4511                                           (struct ib_mad_hdr *)smp, 0,
4512                                           smp->mkey, smp->route.dr.dr_slid,
4513                                           smp->route.dr.return_path,
4514                                           smp->hop_cnt);
4515                 ret = IB_MAD_RESULT_FAILURE;
4516                 return ret;
4517         }
4518
4519         *resp_len = opa_get_smp_header_size(smp);
4520
4521         switch (smp->method) {
4522         case IB_MGMT_METHOD_GET:
4523                 switch (attr_id) {
4524                 default:
4525                         clear_opa_smp_data(smp);
4526                         ret = subn_get_opa_sma(attr_id, smp, am, data,
4527                                                ibdev, port, resp_len,
4528                                                data_size);
4529                         break;
4530                 case OPA_ATTRIB_ID_AGGREGATE:
4531                         ret = subn_get_opa_aggregate(smp, ibdev, port,
4532                                                      resp_len);
4533                         break;
4534                 }
4535                 break;
4536         case IB_MGMT_METHOD_SET:
4537                 switch (attr_id) {
4538                 default:
4539                         ret = subn_set_opa_sma(attr_id, smp, am, data,
4540                                                ibdev, port, resp_len,
4541                                                data_size, local_mad);
4542                         break;
4543                 case OPA_ATTRIB_ID_AGGREGATE:
4544                         ret = subn_set_opa_aggregate(smp, ibdev, port,
4545                                                      resp_len, local_mad);
4546                         break;
4547                 }
4548                 break;
4549         case IB_MGMT_METHOD_TRAP:
4550         case IB_MGMT_METHOD_REPORT:
4551         case IB_MGMT_METHOD_REPORT_RESP:
4552         case IB_MGMT_METHOD_GET_RESP:
4553                 /*
4554                  * The ib_mad module will call us to process responses
4555                  * before checking for other consumers.
4556                  * Just tell the caller to process it normally.
4557                  */
4558                 ret = IB_MAD_RESULT_SUCCESS;
4559                 break;
4560         case IB_MGMT_METHOD_TRAP_REPRESS:
4561                 subn_handle_opa_trap_repress(ibp, smp);
4562                 /* Always successful */
4563                 ret = IB_MAD_RESULT_SUCCESS;
4564                 break;
4565         default:
4566                 smp->status |= IB_SMP_UNSUP_METHOD;
4567                 ret = reply((struct ib_mad_hdr *)smp);
4568                 break;
4569         }
4570
4571         return ret;
4572 }
4573
4574 static int process_subn(struct ib_device *ibdev, int mad_flags,
4575                         u32 port, const struct ib_mad *in_mad,
4576                         struct ib_mad *out_mad)
4577 {
4578         struct ib_smp *smp = (struct ib_smp *)out_mad;
4579         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4580         int ret;
4581
4582         *out_mad = *in_mad;
4583         if (smp->class_version != 1) {
4584                 smp->status |= IB_SMP_UNSUP_VERSION;
4585                 ret = reply((struct ib_mad_hdr *)smp);
4586                 return ret;
4587         }
4588
4589         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags,
4590                          smp->mkey, (__force __be32)smp->dr_slid,
4591                          smp->return_path, smp->hop_cnt);
4592         if (ret) {
4593                 u32 port_num = be32_to_cpu(smp->attr_mod);
4594
4595                 /*
4596                  * If this is a get/set portinfo, we already check the
4597                  * M_Key if the MAD is for another port and the M_Key
4598                  * is OK on the receiving port. This check is needed
4599                  * to increment the error counters when the M_Key
4600                  * fails to match on *both* ports.
4601                  */
4602                 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
4603                     (smp->method == IB_MGMT_METHOD_GET ||
4604                      smp->method == IB_MGMT_METHOD_SET) &&
4605                     port_num && port_num <= ibdev->phys_port_cnt &&
4606                     port != port_num)
4607                         (void)check_mkey(to_iport(ibdev, port_num),
4608                                          (struct ib_mad_hdr *)smp, 0,
4609                                          smp->mkey,
4610                                          (__force __be32)smp->dr_slid,
4611                                          smp->return_path, smp->hop_cnt);
4612                 ret = IB_MAD_RESULT_FAILURE;
4613                 return ret;
4614         }
4615
4616         switch (smp->method) {
4617         case IB_MGMT_METHOD_GET:
4618                 switch (smp->attr_id) {
4619                 case IB_SMP_ATTR_NODE_INFO:
4620                         ret = subn_get_nodeinfo(smp, ibdev, port);
4621                         break;
4622                 default:
4623                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
4624                         ret = reply((struct ib_mad_hdr *)smp);
4625                         break;
4626                 }
4627                 break;
4628         }
4629
4630         return ret;
4631 }
4632
4633 static int process_perf(struct ib_device *ibdev, u32 port,
4634                         const struct ib_mad *in_mad,
4635                         struct ib_mad *out_mad)
4636 {
4637         struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
4638         struct ib_class_port_info *cpi = (struct ib_class_port_info *)
4639                                                 &pmp->data;
4640         int ret = IB_MAD_RESULT_FAILURE;
4641
4642         *out_mad = *in_mad;
4643         if (pmp->mad_hdr.class_version != 1) {
4644                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4645                 ret = reply((struct ib_mad_hdr *)pmp);
4646                 return ret;
4647         }
4648
4649         switch (pmp->mad_hdr.method) {
4650         case IB_MGMT_METHOD_GET:
4651                 switch (pmp->mad_hdr.attr_id) {
4652                 case IB_PMA_PORT_COUNTERS:
4653                         ret = pma_get_ib_portcounters(pmp, ibdev, port);
4654                         break;
4655                 case IB_PMA_PORT_COUNTERS_EXT:
4656                         ret = pma_get_ib_portcounters_ext(pmp, ibdev, port);
4657                         break;
4658                 case IB_PMA_CLASS_PORT_INFO:
4659                         cpi->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
4660                         ret = reply((struct ib_mad_hdr *)pmp);
4661                         break;
4662                 default:
4663                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4664                         ret = reply((struct ib_mad_hdr *)pmp);
4665                         break;
4666                 }
4667                 break;
4668
4669         case IB_MGMT_METHOD_SET:
4670                 if (pmp->mad_hdr.attr_id) {
4671                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4672                         ret = reply((struct ib_mad_hdr *)pmp);
4673                 }
4674                 break;
4675
4676         case IB_MGMT_METHOD_TRAP:
4677         case IB_MGMT_METHOD_GET_RESP:
4678                 /*
4679                  * The ib_mad module will call us to process responses
4680                  * before checking for other consumers.
4681                  * Just tell the caller to process it normally.
4682                  */
4683                 ret = IB_MAD_RESULT_SUCCESS;
4684                 break;
4685
4686         default:
4687                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4688                 ret = reply((struct ib_mad_hdr *)pmp);
4689                 break;
4690         }
4691
4692         return ret;
4693 }
4694
4695 static int process_perf_opa(struct ib_device *ibdev, u32 port,
4696                             const struct opa_mad *in_mad,
4697                             struct opa_mad *out_mad, u32 *resp_len)
4698 {
4699         struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad;
4700         int ret;
4701
4702         *out_mad = *in_mad;
4703
4704         if (pmp->mad_hdr.class_version != OPA_SM_CLASS_VERSION) {
4705                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4706                 return reply((struct ib_mad_hdr *)pmp);
4707         }
4708
4709         *resp_len = sizeof(pmp->mad_hdr);
4710
4711         switch (pmp->mad_hdr.method) {
4712         case IB_MGMT_METHOD_GET:
4713                 switch (pmp->mad_hdr.attr_id) {
4714                 case IB_PMA_CLASS_PORT_INFO:
4715                         ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len);
4716                         break;
4717                 case OPA_PM_ATTRIB_ID_PORT_STATUS:
4718                         ret = pma_get_opa_portstatus(pmp, ibdev, port,
4719                                                      resp_len);
4720                         break;
4721                 case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS:
4722                         ret = pma_get_opa_datacounters(pmp, ibdev, port,
4723                                                        resp_len);
4724                         break;
4725                 case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS:
4726                         ret = pma_get_opa_porterrors(pmp, ibdev, port,
4727                                                      resp_len);
4728                         break;
4729                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4730                         ret = pma_get_opa_errorinfo(pmp, ibdev, port,
4731                                                     resp_len);
4732                         break;
4733                 default:
4734                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4735                         ret = reply((struct ib_mad_hdr *)pmp);
4736                         break;
4737                 }
4738                 break;
4739
4740         case IB_MGMT_METHOD_SET:
4741                 switch (pmp->mad_hdr.attr_id) {
4742                 case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS:
4743                         ret = pma_set_opa_portstatus(pmp, ibdev, port,
4744                                                      resp_len);
4745                         break;
4746                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4747                         ret = pma_set_opa_errorinfo(pmp, ibdev, port,
4748                                                     resp_len);
4749                         break;
4750                 default:
4751                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4752                         ret = reply((struct ib_mad_hdr *)pmp);
4753                         break;
4754                 }
4755                 break;
4756
4757         case IB_MGMT_METHOD_TRAP:
4758         case IB_MGMT_METHOD_GET_RESP:
4759                 /*
4760                  * The ib_mad module will call us to process responses
4761                  * before checking for other consumers.
4762                  * Just tell the caller to process it normally.
4763                  */
4764                 ret = IB_MAD_RESULT_SUCCESS;
4765                 break;
4766
4767         default:
4768                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4769                 ret = reply((struct ib_mad_hdr *)pmp);
4770                 break;
4771         }
4772
4773         return ret;
4774 }
4775
4776 static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags,
4777                                 u32 port, const struct ib_wc *in_wc,
4778                                 const struct ib_grh *in_grh,
4779                                 const struct opa_mad *in_mad,
4780                                 struct opa_mad *out_mad, size_t *out_mad_size,
4781                                 u16 *out_mad_pkey_index)
4782 {
4783         int ret;
4784         int pkey_idx;
4785         int local_mad = 0;
4786         u32 resp_len = in_wc->byte_len - sizeof(*in_grh);
4787         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4788
4789         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
4790         if (pkey_idx < 0) {
4791                 pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
4792                         hfi1_get_pkey(ibp, 1));
4793                 pkey_idx = 1;
4794         }
4795         *out_mad_pkey_index = (u16)pkey_idx;
4796
4797         switch (in_mad->mad_hdr.mgmt_class) {
4798         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4799         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4800                 local_mad = is_local_mad(ibp, in_mad, in_wc);
4801                 if (local_mad) {
4802                         ret = opa_local_smp_check(ibp, in_wc);
4803                         if (ret)
4804                                 return IB_MAD_RESULT_FAILURE;
4805                 }
4806                 ret = process_subn_opa(ibdev, mad_flags, port, in_mad,
4807                                        out_mad, &resp_len, local_mad);
4808                 goto bail;
4809         case IB_MGMT_CLASS_PERF_MGMT:
4810                 ret = hfi1_pkey_validation_pma(ibp, in_mad, in_wc);
4811                 if (ret)
4812                         return IB_MAD_RESULT_FAILURE;
4813
4814                 ret = process_perf_opa(ibdev, port, in_mad, out_mad, &resp_len);
4815                 goto bail;
4816
4817         default:
4818                 ret = IB_MAD_RESULT_SUCCESS;
4819         }
4820
4821 bail:
4822         if (ret & IB_MAD_RESULT_REPLY)
4823                 *out_mad_size = round_up(resp_len, 8);
4824         else if (ret & IB_MAD_RESULT_SUCCESS)
4825                 *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh);
4826
4827         return ret;
4828 }
4829
4830 static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u32 port,
4831                                const struct ib_wc *in_wc,
4832                                const struct ib_grh *in_grh,
4833                                const struct ib_mad *in_mad,
4834                                struct ib_mad *out_mad)
4835 {
4836         int ret;
4837
4838         switch (in_mad->mad_hdr.mgmt_class) {
4839         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4840         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4841                 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
4842                 break;
4843         case IB_MGMT_CLASS_PERF_MGMT:
4844                 ret = process_perf(ibdev, port, in_mad, out_mad);
4845                 break;
4846         default:
4847                 ret = IB_MAD_RESULT_SUCCESS;
4848                 break;
4849         }
4850
4851         return ret;
4852 }
4853
4854 /**
4855  * hfi1_process_mad - process an incoming MAD packet
4856  * @ibdev: the infiniband device this packet came in on
4857  * @mad_flags: MAD flags
4858  * @port: the port number this packet came in on
4859  * @in_wc: the work completion entry for this packet
4860  * @in_grh: the global route header for this packet
4861  * @in_mad: the incoming MAD
4862  * @out_mad: any outgoing MAD reply
4863  * @out_mad_size: size of the outgoing MAD reply
4864  * @out_mad_pkey_index: used to apss back the packet key index
4865  *
4866  * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
4867  * interested in processing.
4868  *
4869  * Note that the verbs framework has already done the MAD sanity checks,
4870  * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4871  * MADs.
4872  *
4873  * This is called by the ib_mad module.
4874  */
4875 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u32 port,
4876                      const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4877                      const struct ib_mad *in_mad, struct ib_mad *out_mad,
4878                      size_t *out_mad_size, u16 *out_mad_pkey_index)
4879 {
4880         switch (in_mad->mad_hdr.base_version) {
4881         case OPA_MGMT_BASE_VERSION:
4882                 return hfi1_process_opa_mad(ibdev, mad_flags, port,
4883                                             in_wc, in_grh,
4884                                             (struct opa_mad *)in_mad,
4885                                             (struct opa_mad *)out_mad,
4886                                             out_mad_size,
4887                                             out_mad_pkey_index);
4888         case IB_MGMT_BASE_VERSION:
4889                 return hfi1_process_ib_mad(ibdev, mad_flags, port, in_wc,
4890                                            in_grh, in_mad, out_mad);
4891         default:
4892                 break;
4893         }
4894
4895         return IB_MAD_RESULT_FAILURE;
4896 }