hw/hfi1/mad.c

0001 // SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
0002 /*
0003  * Copyright(c) 2015-2018 Intel Corporation.
0004  */
0005
0006 #include <linux/net.h>
0007 #include <rdma/opa_addr.h>
0008 #define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \
0009             / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16)))
0010
0011 #include "hfi.h"
0012 #include "mad.h"
0013 #include "trace.h"
0014 #include "qp.h"
0015 #include "vnic.h"
0016
0017 /* the reset value from the FM is supposed to be 0xffff, handle both */
0018 #define OPA_LINK_WIDTH_RESET_OLD 0x0fff
0019 #define OPA_LINK_WIDTH_RESET 0xffff
0020
0021 struct trap_node {
0022     struct list_head list;
0023     struct opa_mad_notice_attr data;
0024     __be64 tid;
0025     int len;
0026     u32 retry;
0027     u8 in_use;
0028     u8 repress;
0029 };
0030
0031 static int smp_length_check(u32 data_size, u32 request_len)
0032 {
0033     if (unlikely(request_len < data_size))
0034         return -EINVAL;
0035
0036     return 0;
0037 }
0038
0039 static int reply(struct ib_mad_hdr *smp)
0040 {
0041     /*
0042      * The verbs framework will handle the directed/LID route
0043      * packet changes.
0044      */
0045     smp->method = IB_MGMT_METHOD_GET_RESP;
0046     if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
0047         smp->status |= IB_SMP_DIRECTION;
0048     return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
0049 }
0050
0051 static inline void clear_opa_smp_data(struct opa_smp *smp)
0052 {
0053     void *data = opa_get_smp_data(smp);
0054     size_t size = opa_get_smp_data_size(smp);
0055
0056     memset(data, 0, size);
0057 }
0058
0059 static u16 hfi1_lookup_pkey_value(struct hfi1_ibport *ibp, int pkey_idx)
0060 {
0061     struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
0062
0063     if (pkey_idx < ARRAY_SIZE(ppd->pkeys))
0064         return ppd->pkeys[pkey_idx];
0065
0066     return 0;
0067 }
0068
0069 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port)
0070 {
0071     struct ib_event event;
0072
0073     event.event = IB_EVENT_PKEY_CHANGE;
0074     event.device = &dd->verbs_dev.rdi.ibdev;
0075     event.element.port_num = port;
0076     ib_dispatch_event(&event);
0077 }
0078
0079 /*
0080  * If the port is down, clean up all pending traps.  We need to be careful
0081  * with the given trap, because it may be queued.
0082  */
0083 static void cleanup_traps(struct hfi1_ibport *ibp, struct trap_node *trap)
0084 {
0085     struct trap_node *node, *q;
0086     unsigned long flags;
0087     struct list_head trap_list;
0088     int i;
0089
0090     for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
0091         spin_lock_irqsave(&ibp->rvp.lock, flags);
0092         list_replace_init(&ibp->rvp.trap_lists[i].list, &trap_list);
0093         ibp->rvp.trap_lists[i].list_len = 0;
0094         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0095
0096         /*
0097          * Remove all items from the list, freeing all the non-given
0098          * traps.
0099          */
0100         list_for_each_entry_safe(node, q, &trap_list, list) {
0101             list_del(&node->list);
0102             if (node != trap)
0103                 kfree(node);
0104         }
0105     }
0106
0107     /*
0108      * If this wasn't on one of the lists it would not be freed.  If it
0109      * was on the list, it is now safe to free.
0110      */
0111     kfree(trap);
0112 }
0113
0114 static struct trap_node *check_and_add_trap(struct hfi1_ibport *ibp,
0115                         struct trap_node *trap)
0116 {
0117     struct trap_node *node;
0118     struct trap_list *trap_list;
0119     unsigned long flags;
0120     unsigned long timeout;
0121     int found = 0;
0122     unsigned int queue_id;
0123     static int trap_count;
0124
0125     queue_id = trap->data.generic_type & 0x0F;
0126     if (queue_id >= RVT_MAX_TRAP_LISTS) {
0127         trap_count++;
0128         pr_err_ratelimited("hfi1: Invalid trap 0x%0x dropped. Total dropped: %d\n",
0129                    trap->data.generic_type, trap_count);
0130         kfree(trap);
0131         return NULL;
0132     }
0133
0134     /*
0135      * Since the retry (handle timeout) does not remove a trap request
0136      * from the list, all we have to do is compare the node.
0137      */
0138     spin_lock_irqsave(&ibp->rvp.lock, flags);
0139     trap_list = &ibp->rvp.trap_lists[queue_id];
0140
0141     list_for_each_entry(node, &trap_list->list, list) {
0142         if (node == trap) {
0143             node->retry++;
0144             found = 1;
0145             break;
0146         }
0147     }
0148
0149     /* If it is not on the list, add it, limited to RVT-MAX_TRAP_LEN. */
0150     if (!found) {
0151         if (trap_list->list_len < RVT_MAX_TRAP_LEN) {
0152             trap_list->list_len++;
0153             list_add_tail(&trap->list, &trap_list->list);
0154         } else {
0155             pr_warn_ratelimited("hfi1: Maximum trap limit reached for 0x%0x traps\n",
0156                         trap->data.generic_type);
0157             kfree(trap);
0158         }
0159     }
0160
0161     /*
0162      * Next check to see if there is a timer pending.  If not, set it up
0163      * and get the first trap from the list.
0164      */
0165     node = NULL;
0166     if (!timer_pending(&ibp->rvp.trap_timer)) {
0167         /*
0168          * o14-2
0169          * If the time out is set we have to wait until it expires
0170          * before the trap can be sent.
0171          * This should be > RVT_TRAP_TIMEOUT
0172          */
0173         timeout = (RVT_TRAP_TIMEOUT *
0174                (1UL << ibp->rvp.subnet_timeout)) / 1000;
0175         mod_timer(&ibp->rvp.trap_timer,
0176               jiffies + usecs_to_jiffies(timeout));
0177         node = list_first_entry(&trap_list->list, struct trap_node,
0178                     list);
0179         node->in_use = 1;
0180     }
0181     spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0182
0183     return node;
0184 }
0185
0186 static void subn_handle_opa_trap_repress(struct hfi1_ibport *ibp,
0187                      struct opa_smp *smp)
0188 {
0189     struct trap_list *trap_list;
0190     struct trap_node *trap;
0191     unsigned long flags;
0192     int i;
0193
0194     if (smp->attr_id != IB_SMP_ATTR_NOTICE)
0195         return;
0196
0197     spin_lock_irqsave(&ibp->rvp.lock, flags);
0198     for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) {
0199         trap_list = &ibp->rvp.trap_lists[i];
0200         trap = list_first_entry_or_null(&trap_list->list,
0201                         struct trap_node, list);
0202         if (trap && trap->tid == smp->tid) {
0203             if (trap->in_use) {
0204                 trap->repress = 1;
0205             } else {
0206                 trap_list->list_len--;
0207                 list_del(&trap->list);
0208                 kfree(trap);
0209             }
0210             break;
0211         }
0212     }
0213     spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0214 }
0215
0216 static void hfi1_update_sm_ah_attr(struct hfi1_ibport *ibp,
0217                    struct rdma_ah_attr *attr, u32 dlid)
0218 {
0219     rdma_ah_set_dlid(attr, dlid);
0220     rdma_ah_set_port_num(attr, ppd_from_ibp(ibp)->port);
0221     if (dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
0222         struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
0223
0224         rdma_ah_set_ah_flags(attr, IB_AH_GRH);
0225         grh->sgid_index = 0;
0226         grh->hop_limit = 1;
0227         grh->dgid.global.subnet_prefix =
0228             ibp->rvp.gid_prefix;
0229         grh->dgid.global.interface_id = OPA_MAKE_ID(dlid);
0230     }
0231 }
0232
0233 static int hfi1_modify_qp0_ah(struct hfi1_ibport *ibp,
0234                   struct rvt_ah *ah, u32 dlid)
0235 {
0236     struct rdma_ah_attr attr;
0237     struct rvt_qp *qp0;
0238     int ret = -EINVAL;
0239
0240     memset(&attr, 0, sizeof(attr));
0241     attr.type = ah->ibah.type;
0242     hfi1_update_sm_ah_attr(ibp, &attr, dlid);
0243     rcu_read_lock();
0244     qp0 = rcu_dereference(ibp->rvp.qp[0]);
0245     if (qp0)
0246         ret = rdma_modify_ah(&ah->ibah, &attr);
0247     rcu_read_unlock();
0248     return ret;
0249 }
0250
0251 static struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u32 dlid)
0252 {
0253     struct rdma_ah_attr attr;
0254     struct ib_ah *ah = ERR_PTR(-EINVAL);
0255     struct rvt_qp *qp0;
0256     struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
0257     struct hfi1_devdata *dd = dd_from_ppd(ppd);
0258     u32 port_num = ppd->port;
0259
0260     memset(&attr, 0, sizeof(attr));
0261     attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num);
0262     hfi1_update_sm_ah_attr(ibp, &attr, dlid);
0263     rcu_read_lock();
0264     qp0 = rcu_dereference(ibp->rvp.qp[0]);
0265     if (qp0)
0266         ah = rdma_create_ah(qp0->ibqp.pd, &attr, 0);
0267     rcu_read_unlock();
0268     return ah;
0269 }
0270
0271 static void send_trap(struct hfi1_ibport *ibp, struct trap_node *trap)
0272 {
0273     struct ib_mad_send_buf *send_buf;
0274     struct ib_mad_agent *agent;
0275     struct opa_smp *smp;
0276     unsigned long flags;
0277     int pkey_idx;
0278     u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
0279
0280     agent = ibp->rvp.send_agent;
0281     if (!agent) {
0282         cleanup_traps(ibp, trap);
0283         return;
0284     }
0285
0286     /* o14-3.2.1 */
0287     if (driver_lstate(ppd_from_ibp(ibp)) != IB_PORT_ACTIVE) {
0288         cleanup_traps(ibp, trap);
0289         return;
0290     }
0291
0292     /* Add the trap to the list if necessary and see if we can send it */
0293     trap = check_and_add_trap(ibp, trap);
0294     if (!trap)
0295         return;
0296
0297     pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
0298     if (pkey_idx < 0) {
0299         pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
0300             __func__, hfi1_get_pkey(ibp, 1));
0301         pkey_idx = 1;
0302     }
0303
0304     send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
0305                       IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
0306                       GFP_ATOMIC, IB_MGMT_BASE_VERSION);
0307     if (IS_ERR(send_buf))
0308         return;
0309
0310     smp = send_buf->mad;
0311     smp->base_version = OPA_MGMT_BASE_VERSION;
0312     smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
0313     smp->class_version = OPA_SM_CLASS_VERSION;
0314     smp->method = IB_MGMT_METHOD_TRAP;
0315
0316     /* Only update the transaction ID for new traps (o13-5). */
0317     if (trap->tid == 0) {
0318         ibp->rvp.tid++;
0319         /* make sure that tid != 0 */
0320         if (ibp->rvp.tid == 0)
0321             ibp->rvp.tid++;
0322         trap->tid = cpu_to_be64(ibp->rvp.tid);
0323     }
0324     smp->tid = trap->tid;
0325
0326     smp->attr_id = IB_SMP_ATTR_NOTICE;
0327     /* o14-1: smp->mkey = 0; */
0328
0329     memcpy(smp->route.lid.data, &trap->data, trap->len);
0330
0331     spin_lock_irqsave(&ibp->rvp.lock, flags);
0332     if (!ibp->rvp.sm_ah) {
0333         if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
0334             struct ib_ah *ah;
0335
0336             ah = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid);
0337             if (IS_ERR(ah)) {
0338                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0339                 return;
0340             }
0341             send_buf->ah = ah;
0342             ibp->rvp.sm_ah = ibah_to_rvtah(ah);
0343         } else {
0344             spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0345             return;
0346         }
0347     } else {
0348         send_buf->ah = &ibp->rvp.sm_ah->ibah;
0349     }
0350
0351     /*
0352      * If the trap was repressed while things were getting set up, don't
0353      * bother sending it. This could happen for a retry.
0354      */
0355     if (trap->repress) {
0356         list_del(&trap->list);
0357         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0358         kfree(trap);
0359         ib_free_send_mad(send_buf);
0360         return;
0361     }
0362
0363     trap->in_use = 0;
0364     spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0365
0366     if (ib_post_send_mad(send_buf, NULL))
0367         ib_free_send_mad(send_buf);
0368 }
0369
0370 void hfi1_handle_trap_timer(struct timer_list *t)
0371 {
0372     struct hfi1_ibport *ibp = from_timer(ibp, t, rvp.trap_timer);
0373     struct trap_node *trap = NULL;
0374     unsigned long flags;
0375     int i;
0376
0377     /* Find the trap with the highest priority */
0378     spin_lock_irqsave(&ibp->rvp.lock, flags);
0379     for (i = 0; !trap && i < RVT_MAX_TRAP_LISTS; i++) {
0380         trap = list_first_entry_or_null(&ibp->rvp.trap_lists[i].list,
0381                         struct trap_node, list);
0382     }
0383     spin_unlock_irqrestore(&ibp->rvp.lock, flags);
0384
0385     if (trap)
0386         send_trap(ibp, trap);
0387 }
0388
0389 static struct trap_node *create_trap_node(u8 type, __be16 trap_num, u32 lid)
0390 {
0391     struct trap_node *trap;
0392
0393     trap = kzalloc(sizeof(*trap), GFP_ATOMIC);
0394     if (!trap)
0395         return NULL;
0396
0397     INIT_LIST_HEAD(&trap->list);
0398     trap->data.generic_type = type;
0399     trap->data.prod_type_lsb = IB_NOTICE_PROD_CA;
0400     trap->data.trap_num = trap_num;
0401     trap->data.issuer_lid = cpu_to_be32(lid);
0402
0403     return trap;
0404 }
0405
0406 /*
0407  * Send a bad P_Key trap (ch. 14.3.8).
0408  */
0409 void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
0410            u32 qp1, u32 qp2, u32 lid1, u32 lid2)
0411 {
0412     struct trap_node *trap;
0413     u32 lid = ppd_from_ibp(ibp)->lid;
0414
0415     ibp->rvp.n_pkt_drops++;
0416     ibp->rvp.pkey_violations++;
0417
0418     trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_P_KEY,
0419                 lid);
0420     if (!trap)
0421         return;
0422
0423     /* Send violation trap */
0424     trap->data.ntc_257_258.lid1 = cpu_to_be32(lid1);
0425     trap->data.ntc_257_258.lid2 = cpu_to_be32(lid2);
0426     trap->data.ntc_257_258.key = cpu_to_be32(key);
0427     trap->data.ntc_257_258.sl = sl << 3;
0428     trap->data.ntc_257_258.qp1 = cpu_to_be32(qp1);
0429     trap->data.ntc_257_258.qp2 = cpu_to_be32(qp2);
0430
0431     trap->len = sizeof(trap->data);
0432     send_trap(ibp, trap);
0433 }
0434
0435 /*
0436  * Send a bad M_Key trap (ch. 14.3.9).
0437  */
0438 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
0439              __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
0440 {
0441     struct trap_node *trap;
0442     u32 lid = ppd_from_ibp(ibp)->lid;
0443
0444     trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_M_KEY,
0445                 lid);
0446     if (!trap)
0447         return;
0448
0449     /* Send violation trap */
0450     trap->data.ntc_256.lid = trap->data.issuer_lid;
0451     trap->data.ntc_256.method = mad->method;
0452     trap->data.ntc_256.attr_id = mad->attr_id;
0453     trap->data.ntc_256.attr_mod = mad->attr_mod;
0454     trap->data.ntc_256.mkey = mkey;
0455     if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
0456         trap->data.ntc_256.dr_slid = dr_slid;
0457         trap->data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
0458         if (hop_cnt > ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path)) {
0459             trap->data.ntc_256.dr_trunc_hop |=
0460                 IB_NOTICE_TRAP_DR_TRUNC;
0461             hop_cnt = ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path);
0462         }
0463         trap->data.ntc_256.dr_trunc_hop |= hop_cnt;
0464         memcpy(trap->data.ntc_256.dr_rtn_path, return_path,
0465                hop_cnt);
0466     }
0467
0468     trap->len = sizeof(trap->data);
0469
0470     send_trap(ibp, trap);
0471 }
0472
0473 /*
0474  * Send a Port Capability Mask Changed trap (ch. 14.3.11).
0475  */
0476 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num)
0477 {
0478     struct trap_node *trap;
0479     struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
0480     struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
0481     struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
0482     u32 lid = ppd_from_ibp(ibp)->lid;
0483
0484     trap = create_trap_node(IB_NOTICE_TYPE_INFO,
0485                 OPA_TRAP_CHANGE_CAPABILITY,
0486                 lid);
0487     if (!trap)
0488         return;
0489
0490     trap->data.ntc_144.lid = trap->data.issuer_lid;
0491     trap->data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
0492     trap->data.ntc_144.cap_mask3 = cpu_to_be16(ibp->rvp.port_cap3_flags);
0493
0494     trap->len = sizeof(trap->data);
0495     send_trap(ibp, trap);
0496 }
0497
0498 /*
0499  * Send a System Image GUID Changed trap (ch. 14.3.12).
0500  */
0501 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
0502 {
0503     struct trap_node *trap;
0504     u32 lid = ppd_from_ibp(ibp)->lid;
0505
0506     trap = create_trap_node(IB_NOTICE_TYPE_INFO, OPA_TRAP_CHANGE_SYSGUID,
0507                 lid);
0508     if (!trap)
0509         return;
0510
0511     trap->data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
0512     trap->data.ntc_145.lid = trap->data.issuer_lid;
0513
0514     trap->len = sizeof(trap->data);
0515     send_trap(ibp, trap);
0516 }
0517
0518 /*
0519  * Send a Node Description Changed trap (ch. 14.3.13).
0520  */
0521 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
0522 {
0523     struct trap_node *trap;
0524     u32 lid = ppd_from_ibp(ibp)->lid;
0525
0526     trap = create_trap_node(IB_NOTICE_TYPE_INFO,
0527                 OPA_TRAP_CHANGE_CAPABILITY,
0528                 lid);
0529     if (!trap)
0530         return;
0531
0532     trap->data.ntc_144.lid = trap->data.issuer_lid;
0533     trap->data.ntc_144.change_flags =
0534         cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
0535
0536     trap->len = sizeof(trap->data);
0537     send_trap(ibp, trap);
0538 }
0539
0540 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
0541                    u8 *data, struct ib_device *ibdev,
0542                    u32 port, u32 *resp_len, u32 max_len)
0543 {
0544     struct opa_node_description *nd;
0545
0546     if (am || smp_length_check(sizeof(*nd), max_len)) {
0547         smp->status |= IB_SMP_INVALID_FIELD;
0548         return reply((struct ib_mad_hdr *)smp);
0549     }
0550
0551     nd = (struct opa_node_description *)data;
0552
0553     memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
0554
0555     if (resp_len)
0556         *resp_len += sizeof(*nd);
0557
0558     return reply((struct ib_mad_hdr *)smp);
0559 }
0560
0561 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
0562                    struct ib_device *ibdev, u32 port,
0563                    u32 *resp_len, u32 max_len)
0564 {
0565     struct opa_node_info *ni;
0566     struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
0567     u32 pidx = port - 1; /* IB number port from 1, hw from 0 */
0568
0569     ni = (struct opa_node_info *)data;
0570
0571     /* GUID 0 is illegal */
0572     if (am || pidx >= dd->num_pports || ibdev->node_guid == 0 ||
0573         smp_length_check(sizeof(*ni), max_len) ||
0574         get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
0575         smp->status |= IB_SMP_INVALID_FIELD;
0576         return reply((struct ib_mad_hdr *)smp);
0577     }
0578
0579     ni->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
0580     ni->base_version = OPA_MGMT_BASE_VERSION;
0581     ni->class_version = OPA_SM_CLASS_VERSION;
0582     ni->node_type = 1;     /* channel adapter */
0583     ni->num_ports = ibdev->phys_port_cnt;
0584     /* This is already in network order */
0585     ni->system_image_guid = ib_hfi1_sys_image_guid;
0586     ni->node_guid = ibdev->node_guid;
0587     ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
0588     ni->device_id = cpu_to_be16(dd->pcidev->device);
0589     ni->revision = cpu_to_be32(dd->minrev);
0590     ni->local_port_num = port;
0591     ni->vendor_id[0] = dd->oui1;
0592     ni->vendor_id[1] = dd->oui2;
0593     ni->vendor_id[2] = dd->oui3;
0594
0595     if (resp_len)
0596         *resp_len += sizeof(*ni);
0597
0598     return reply((struct ib_mad_hdr *)smp);
0599 }
0600
0601 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
0602                  u32 port)
0603 {
0604     struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
0605     struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
0606     u32 pidx = port - 1; /* IB number port from 1, hw from 0 */
0607
0608     /* GUID 0 is illegal */
0609     if (smp->attr_mod || pidx >= dd->num_pports ||
0610         ibdev->node_guid == 0 ||
0611         get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) {
0612         smp->status |= IB_SMP_INVALID_FIELD;
0613         return reply((struct ib_mad_hdr *)smp);
0614     }
0615
0616     nip->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX);
0617     nip->base_version = OPA_MGMT_BASE_VERSION;
0618     nip->class_version = OPA_SM_CLASS_VERSION;
0619     nip->node_type = 1;     /* channel adapter */
0620     nip->num_ports = ibdev->phys_port_cnt;
0621     /* This is already in network order */
0622     nip->sys_guid = ib_hfi1_sys_image_guid;
0623     nip->node_guid = ibdev->node_guid;
0624     nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
0625     nip->device_id = cpu_to_be16(dd->pcidev->device);
0626     nip->revision = cpu_to_be32(dd->minrev);
0627     nip->local_port_num = port;
0628     nip->vendor_id[0] = dd->oui1;
0629     nip->vendor_id[1] = dd->oui2;
0630     nip->vendor_id[2] = dd->oui3;
0631
0632     return reply((struct ib_mad_hdr *)smp);
0633 }
0634
0635 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
0636 {
0637     (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
0638 }
0639
0640 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
0641 {
0642     (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
0643 }
0644
0645 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
0646 {
0647     (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
0648 }
0649
0650 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
0651               int mad_flags, __be64 mkey, __be32 dr_slid,
0652               u8 return_path[], u8 hop_cnt)
0653 {
0654     int valid_mkey = 0;
0655     int ret = 0;
0656
0657     /* Is the mkey in the process of expiring? */
0658     if (ibp->rvp.mkey_lease_timeout &&
0659         time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
0660         /* Clear timeout and mkey protection field. */
0661         ibp->rvp.mkey_lease_timeout = 0;
0662         ibp->rvp.mkeyprot = 0;
0663     }
0664
0665     if ((mad_flags & IB_MAD_IGNORE_MKEY) ||  ibp->rvp.mkey == 0 ||
0666         ibp->rvp.mkey == mkey)
0667         valid_mkey = 1;
0668
0669     /* Unset lease timeout on any valid Get/Set/TrapRepress */
0670     if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
0671         (mad->method == IB_MGMT_METHOD_GET ||
0672          mad->method == IB_MGMT_METHOD_SET ||
0673          mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
0674         ibp->rvp.mkey_lease_timeout = 0;
0675
0676     if (!valid_mkey) {
0677         switch (mad->method) {
0678         case IB_MGMT_METHOD_GET:
0679             /* Bad mkey not a violation below level 2 */
0680             if (ibp->rvp.mkeyprot < 2)
0681                 break;
0682             fallthrough;
0683         case IB_MGMT_METHOD_SET:
0684         case IB_MGMT_METHOD_TRAP_REPRESS:
0685             if (ibp->rvp.mkey_violations != 0xFFFF)
0686                 ++ibp->rvp.mkey_violations;
0687             if (!ibp->rvp.mkey_lease_timeout &&
0688                 ibp->rvp.mkey_lease_period)
0689                 ibp->rvp.mkey_lease_timeout = jiffies +
0690                     ibp->rvp.mkey_lease_period * HZ;
0691             /* Generate a trap notice. */
0692             bad_mkey(ibp, mad, mkey, dr_slid, return_path,
0693                  hop_cnt);
0694             ret = 1;
0695         }
0696     }
0697
0698     return ret;
0699 }
0700
0701 /*
0702  * The SMA caches reads from LCB registers in case the LCB is unavailable.
0703  * (The LCB is unavailable in certain link states, for example.)
0704  */
0705 struct lcb_datum {
0706     u32 off;
0707     u64 val;
0708 };
0709
0710 static struct lcb_datum lcb_cache[] = {
0711     { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
0712 };
0713
0714 static int write_lcb_cache(u32 off, u64 val)
0715 {
0716     int i;
0717
0718     for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
0719         if (lcb_cache[i].off == off) {
0720             lcb_cache[i].val = val;
0721             return 0;
0722         }
0723     }
0724
0725     pr_warn("%s bad offset 0x%x\n", __func__, off);
0726     return -1;
0727 }
0728
0729 static int read_lcb_cache(u32 off, u64 *val)
0730 {
0731     int i;
0732
0733     for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
0734         if (lcb_cache[i].off == off) {
0735             *val = lcb_cache[i].val;
0736             return 0;
0737         }
0738     }
0739
0740     pr_warn("%s bad offset 0x%x\n", __func__, off);
0741     return -1;
0742 }
0743
0744 void read_ltp_rtt(struct hfi1_devdata *dd)
0745 {
0746     u64 reg;
0747
0748     if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
0749         dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
0750     else
0751         write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
0752 }
0753
0754 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
0755                    struct ib_device *ibdev, u32 port,
0756                    u32 *resp_len, u32 max_len)
0757 {
0758     int i;
0759     struct hfi1_devdata *dd;
0760     struct hfi1_pportdata *ppd;
0761     struct hfi1_ibport *ibp;
0762     struct opa_port_info *pi = (struct opa_port_info *)data;
0763     u8 mtu;
0764     u8 credit_rate;
0765     u8 is_beaconing_active;
0766     u32 state;
0767     u32 num_ports = OPA_AM_NPORT(am);
0768     u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
0769     u32 buffer_units;
0770     u64 tmp = 0;
0771
0772     if (num_ports != 1 || smp_length_check(sizeof(*pi), max_len)) {
0773         smp->status |= IB_SMP_INVALID_FIELD;
0774         return reply((struct ib_mad_hdr *)smp);
0775     }
0776
0777     dd = dd_from_ibdev(ibdev);
0778     /* IB numbers ports from 1, hw from 0 */
0779     ppd = dd->pport + (port - 1);
0780     ibp = &ppd->ibport_data;
0781
0782     if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
0783         ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
0784         smp->status |= IB_SMP_INVALID_FIELD;
0785         return reply((struct ib_mad_hdr *)smp);
0786     }
0787
0788     pi->lid = cpu_to_be32(ppd->lid);
0789
0790     /* Only return the mkey if the protection field allows it. */
0791     if (!(smp->method == IB_MGMT_METHOD_GET &&
0792           ibp->rvp.mkey != smp->mkey &&
0793           ibp->rvp.mkeyprot == 1))
0794         pi->mkey = ibp->rvp.mkey;
0795
0796     pi->subnet_prefix = ibp->rvp.gid_prefix;
0797     pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid);
0798     pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
0799     pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
0800     pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
0801     pi->sa_qp = cpu_to_be32(ppd->sa_qp);
0802
0803     pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
0804     pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
0805     pi->link_width.active = cpu_to_be16(ppd->link_width_active);
0806
0807     pi->link_width_downgrade.supported =
0808             cpu_to_be16(ppd->link_width_downgrade_supported);
0809     pi->link_width_downgrade.enabled =
0810             cpu_to_be16(ppd->link_width_downgrade_enabled);
0811     pi->link_width_downgrade.tx_active =
0812             cpu_to_be16(ppd->link_width_downgrade_tx_active);
0813     pi->link_width_downgrade.rx_active =
0814             cpu_to_be16(ppd->link_width_downgrade_rx_active);
0815
0816     pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
0817     pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
0818     pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
0819
0820     state = driver_lstate(ppd);
0821
0822     if (start_of_sm_config && (state == IB_PORT_INIT))
0823         ppd->is_sm_config_started = 1;
0824
0825     pi->port_phys_conf = (ppd->port_type & 0xf);
0826
0827     pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
0828     pi->port_states.ledenable_offlinereason |=
0829         ppd->is_sm_config_started << 5;
0830     /*
0831      * This pairs with the memory barrier in hfi1_start_led_override to
0832      * ensure that we read the correct state of LED beaconing represented
0833      * by led_override_timer_active
0834      */
0835     smp_rmb();
0836     is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
0837     pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
0838     pi->port_states.ledenable_offlinereason |=
0839         ppd->offline_disabled_reason;
0840
0841     pi->port_states.portphysstate_portstate =
0842         (driver_pstate(ppd) << 4) | state;
0843
0844     pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
0845
0846     memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
0847     for (i = 0; i < ppd->vls_supported; i++) {
0848         mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
0849         if ((i % 2) == 0)
0850             pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4);
0851         else
0852             pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu;
0853     }
0854     /* don't forget VL 15 */
0855     mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
0856     pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu;
0857     pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL;
0858     pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
0859     pi->partenforce_filterraw |=
0860         (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
0861     if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
0862         pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
0863     if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
0864         pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
0865     pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
0866     /* P_KeyViolations are counted by hardware. */
0867     pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
0868     pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
0869
0870     pi->vl.cap = ppd->vls_supported;
0871     pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit);
0872     pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
0873     pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
0874
0875     pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout;
0876
0877     pi->port_link_mode  = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
0878                       OPA_PORT_LINK_MODE_OPA << 5 |
0879                       OPA_PORT_LINK_MODE_OPA);
0880
0881     pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
0882
0883     pi->port_mode = cpu_to_be16(
0884                 ppd->is_active_optimize_enabled ?
0885                     OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
0886
0887     pi->port_packet_format.supported =
0888         cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
0889                 OPA_PORT_PACKET_FORMAT_16B);
0890     pi->port_packet_format.enabled =
0891         cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B |
0892                 OPA_PORT_PACKET_FORMAT_16B);
0893
0894     /* flit_control.interleave is (OPA V1, version .76):
0895      * bits     use
0896      * ----     ---
0897      * 2        res
0898      * 2        DistanceSupported
0899      * 2        DistanceEnabled
0900      * 5        MaxNextLevelTxEnabled
0901      * 5        MaxNestLevelRxSupported
0902      *
0903      * HFI supports only "distance mode 1" (see OPA V1, version .76,
0904      * section 9.6.2), so set DistanceSupported, DistanceEnabled
0905      * to 0x1.
0906      */
0907     pi->flit_control.interleave = cpu_to_be16(0x1400);
0908
0909     pi->link_down_reason = ppd->local_link_down_reason.sma;
0910     pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
0911     pi->port_error_action = cpu_to_be32(ppd->port_error_action);
0912     pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
0913
0914     /* 32.768 usec. response time (guessing) */
0915     pi->resptimevalue = 3;
0916
0917     pi->local_port_num = port;
0918
0919     /* buffer info for FM */
0920     pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
0921
0922     pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
0923     pi->neigh_port_num = ppd->neighbor_port_number;
0924     pi->port_neigh_mode =
0925         (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
0926         (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
0927         (ppd->neighbor_fm_security ?
0928             OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
0929
0930     /* HFIs shall always return VL15 credits to their
0931      * neighbor in a timely manner, without any credit return pacing.
0932      */
0933     credit_rate = 0;
0934     buffer_units  = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
0935     buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
0936     buffer_units |= (credit_rate << 6) &
0937                 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
0938     buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
0939     pi->buffer_units = cpu_to_be32(buffer_units);
0940
0941     pi->opa_cap_mask = cpu_to_be16(ibp->rvp.port_cap3_flags);
0942     pi->collectivemask_multicastmask = ((OPA_COLLECTIVE_NR & 0x7)
0943                         << 3 | (OPA_MCAST_NR & 0x7));
0944
0945     /* HFI supports a replay buffer 128 LTPs in size */
0946     pi->replay_depth.buffer = 0x80;
0947     /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
0948     read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
0949
0950     /*
0951      * this counter is 16 bits wide, but the replay_depth.wire
0952      * variable is only 8 bits
0953      */
0954     if (tmp > 0xff)
0955         tmp = 0xff;
0956     pi->replay_depth.wire = tmp;
0957
0958     if (resp_len)
0959         *resp_len += sizeof(struct opa_port_info);
0960
0961     return reply((struct ib_mad_hdr *)smp);
0962 }
0963
0964 /**
0965  * get_pkeys - return the PKEY table
0966  * @dd: the hfi1_ib device
0967  * @port: the IB port number
0968  * @pkeys: the pkey table is placed here
0969  */
0970 static int get_pkeys(struct hfi1_devdata *dd, u32 port, u16 *pkeys)
0971 {
0972     struct hfi1_pportdata *ppd = dd->pport + port - 1;
0973
0974     memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
0975
0976     return 0;
0977 }
0978
0979 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
0980                     struct ib_device *ibdev, u32 port,
0981                     u32 *resp_len, u32 max_len)
0982 {
0983     struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
0984     u32 n_blocks_req = OPA_AM_NBLK(am);
0985     u32 start_block = am & 0x7ff;
0986     __be16 *p;
0987     u16 *q;
0988     int i;
0989     u16 n_blocks_avail;
0990     unsigned npkeys = hfi1_get_npkeys(dd);
0991     size_t size;
0992
0993     if (n_blocks_req == 0) {
0994         pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
0995             port, start_block, n_blocks_req);
0996         smp->status |= IB_SMP_INVALID_FIELD;
0997         return reply((struct ib_mad_hdr *)smp);
0998     }
0999
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[0];
2441         /* array size defined by #bits set in vl_select_mask*/
2442     } port[1]; /* array size defined by  #ports in attribute modifier */
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[0];
2474         /* array size defined by #bits set in vl_select_mask */
2475     } port[1]; /* array size defined by #ports in attribute modifier */
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[1]; /* actual array size defined by #ports in attr modifier */
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[0].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[0];
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[0].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[0];
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[0];
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[0];
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 }