drivers/infiniband/hw/hfi1/mad.c

   1 /*
   2  * Copyright(c) 2015, 2016 Intel Corporation.
   3  *
   4  * This file is provided under a dual BSD/GPLv2 license.  When using or
   5  * redistributing this file, you may do so under either license.
   6  *
   7  * GPL LICENSE SUMMARY
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of version 2 of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * BSD LICENSE
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted provided that the following conditions
  22  * are met:
  23  *
  24  *  - Redistributions of source code must retain the above copyright
  25  *    notice, this list of conditions and the following disclaimer.
  26  *  - Redistributions in binary form must reproduce the above copyright
  27  *    notice, this list of conditions and the following disclaimer in
  28  *    the documentation and/or other materials provided with the
  29  *    distribution.
  30  *  - Neither the name of Intel Corporation nor the names of its
  31  *    contributors may be used to endorse or promote products derived
  32  *    from this software without specific prior written permission.
  33  *
  34  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  35  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  36  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  37  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  38  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  39  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  40  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  44  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  45  *
  46  */
  47
  48 #include <linux/net.h>
  49 #define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \
  50                         / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16)))
  51
  52 #include "hfi.h"
  53 #include "mad.h"
  54 #include "trace.h"
  55 #include "qp.h"
  56
  57 /* the reset value from the FM is supposed to be 0xffff, handle both */
  58 #define OPA_LINK_WIDTH_RESET_OLD 0x0fff
  59 #define OPA_LINK_WIDTH_RESET 0xffff
  60
  61 static int reply(struct ib_mad_hdr *smp)
  62 {
  63         /*
  64          * The verbs framework will handle the directed/LID route
  65          * packet changes.
  66          */
  67         smp->method = IB_MGMT_METHOD_GET_RESP;
  68         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
  69                 smp->status |= IB_SMP_DIRECTION;
  70         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
  71 }
  72
  73 static inline void clear_opa_smp_data(struct opa_smp *smp)
  74 {
  75         void *data = opa_get_smp_data(smp);
  76         size_t size = opa_get_smp_data_size(smp);
  77
  78         memset(data, 0, size);
  79 }
  80
  81 static void send_trap(struct hfi1_ibport *ibp, void *data, unsigned len)
  82 {
  83         struct ib_mad_send_buf *send_buf;
  84         struct ib_mad_agent *agent;
  85         struct opa_smp *smp;
  86         int ret;
  87         unsigned long flags;
  88         unsigned long timeout;
  89         int pkey_idx;
  90         u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
  91
  92         agent = ibp->rvp.send_agent;
  93         if (!agent)
  94                 return;
  95
  96         /* o14-3.2.1 */
  97         if (ppd_from_ibp(ibp)->lstate != IB_PORT_ACTIVE)
  98                 return;
  99
 100         /* o14-2 */
 101         if (ibp->rvp.trap_timeout && time_before(jiffies,
 102                                                  ibp->rvp.trap_timeout))
 103                 return;
 104
 105         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
 106         if (pkey_idx < 0) {
 107                 pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
 108                         __func__, hfi1_get_pkey(ibp, 1));
 109                 pkey_idx = 1;
 110         }
 111
 112         send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
 113                                       IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
 114                                       GFP_ATOMIC, IB_MGMT_BASE_VERSION);
 115         if (IS_ERR(send_buf))
 116                 return;
 117
 118         smp = send_buf->mad;
 119         smp->base_version = OPA_MGMT_BASE_VERSION;
 120         smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
 121         smp->class_version = OPA_SMI_CLASS_VERSION;
 122         smp->method = IB_MGMT_METHOD_TRAP;
 123         ibp->rvp.tid++;
 124         smp->tid = cpu_to_be64(ibp->rvp.tid);
 125         smp->attr_id = IB_SMP_ATTR_NOTICE;
 126         /* o14-1: smp->mkey = 0; */
 127         memcpy(smp->route.lid.data, data, len);
 128
 129         spin_lock_irqsave(&ibp->rvp.lock, flags);
 130         if (!ibp->rvp.sm_ah) {
 131                 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
 132                         struct ib_ah *ah;
 133
 134                         ah = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid);
 135                         if (IS_ERR(ah)) {
 136                                 ret = PTR_ERR(ah);
 137                         } else {
 138                                 send_buf->ah = ah;
 139                                 ibp->rvp.sm_ah = ibah_to_rvtah(ah);
 140                                 ret = 0;
 141                         }
 142                 } else {
 143                         ret = -EINVAL;
 144                 }
 145         } else {
 146                 send_buf->ah = &ibp->rvp.sm_ah->ibah;
 147                 ret = 0;
 148         }
 149         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 150
 151         if (!ret)
 152                 ret = ib_post_send_mad(send_buf, NULL);
 153         if (!ret) {
 154                 /* 4.096 usec. */
 155                 timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000;
 156                 ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout);
 157         } else {
 158                 ib_free_send_mad(send_buf);
 159                 ibp->rvp.trap_timeout = 0;
 160         }
 161 }
 162
 163 /*
 164  * Send a bad [PQ]_Key trap (ch. 14.3.8).
 165  */
 166 void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
 167                     u32 qp1, u32 qp2, u16 lid1, u16 lid2)
 168 {
 169         struct opa_mad_notice_attr data;
 170         u32 lid = ppd_from_ibp(ibp)->lid;
 171         u32 _lid1 = lid1;
 172         u32 _lid2 = lid2;
 173
 174         memset(&data, 0, sizeof(data));
 175
 176         if (trap_num == OPA_TRAP_BAD_P_KEY)
 177                 ibp->rvp.pkey_violations++;
 178         else
 179                 ibp->rvp.qkey_violations++;
 180         ibp->rvp.n_pkt_drops++;
 181
 182         /* Send violation trap */
 183         data.generic_type = IB_NOTICE_TYPE_SECURITY;
 184         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 185         data.trap_num = trap_num;
 186         data.issuer_lid = cpu_to_be32(lid);
 187         data.ntc_257_258.lid1 = cpu_to_be32(_lid1);
 188         data.ntc_257_258.lid2 = cpu_to_be32(_lid2);
 189         data.ntc_257_258.key = cpu_to_be32(key);
 190         data.ntc_257_258.sl = sl << 3;
 191         data.ntc_257_258.qp1 = cpu_to_be32(qp1);
 192         data.ntc_257_258.qp2 = cpu_to_be32(qp2);
 193
 194         send_trap(ibp, &data, sizeof(data));
 195 }
 196
 197 /*
 198  * Send a bad M_Key trap (ch. 14.3.9).
 199  */
 200 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 201                      __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
 202 {
 203         struct opa_mad_notice_attr data;
 204         u32 lid = ppd_from_ibp(ibp)->lid;
 205
 206         memset(&data, 0, sizeof(data));
 207         /* Send violation trap */
 208         data.generic_type = IB_NOTICE_TYPE_SECURITY;
 209         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 210         data.trap_num = OPA_TRAP_BAD_M_KEY;
 211         data.issuer_lid = cpu_to_be32(lid);
 212         data.ntc_256.lid = data.issuer_lid;
 213         data.ntc_256.method = mad->method;
 214         data.ntc_256.attr_id = mad->attr_id;
 215         data.ntc_256.attr_mod = mad->attr_mod;
 216         data.ntc_256.mkey = mkey;
 217         if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
 218                 data.ntc_256.dr_slid = dr_slid;
 219                 data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
 220                 if (hop_cnt > ARRAY_SIZE(data.ntc_256.dr_rtn_path)) {
 221                         data.ntc_256.dr_trunc_hop |=
 222                                 IB_NOTICE_TRAP_DR_TRUNC;
 223                         hop_cnt = ARRAY_SIZE(data.ntc_256.dr_rtn_path);
 224                 }
 225                 data.ntc_256.dr_trunc_hop |= hop_cnt;
 226                 memcpy(data.ntc_256.dr_rtn_path, return_path,
 227                        hop_cnt);
 228         }
 229
 230         send_trap(ibp, &data, sizeof(data));
 231 }
 232
 233 /*
 234  * Send a Port Capability Mask Changed trap (ch. 14.3.11).
 235  */
 236 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num)
 237 {
 238         struct opa_mad_notice_attr data;
 239         struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
 240         struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
 241         struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
 242         u32 lid = ppd_from_ibp(ibp)->lid;
 243
 244         memset(&data, 0, sizeof(data));
 245
 246         data.generic_type = IB_NOTICE_TYPE_INFO;
 247         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 248         data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
 249         data.issuer_lid = cpu_to_be32(lid);
 250         data.ntc_144.lid = data.issuer_lid;
 251         data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 252
 253         send_trap(ibp, &data, sizeof(data));
 254 }
 255
 256 /*
 257  * Send a System Image GUID Changed trap (ch. 14.3.12).
 258  */
 259 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
 260 {
 261         struct opa_mad_notice_attr data;
 262         u32 lid = ppd_from_ibp(ibp)->lid;
 263
 264         memset(&data, 0, sizeof(data));
 265
 266         data.generic_type = IB_NOTICE_TYPE_INFO;
 267         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 268         data.trap_num = OPA_TRAP_CHANGE_SYSGUID;
 269         data.issuer_lid = cpu_to_be32(lid);
 270         data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
 271         data.ntc_145.lid = data.issuer_lid;
 272
 273         send_trap(ibp, &data, sizeof(data));
 274 }
 275
 276 /*
 277  * Send a Node Description Changed trap (ch. 14.3.13).
 278  */
 279 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
 280 {
 281         struct opa_mad_notice_attr data;
 282         u32 lid = ppd_from_ibp(ibp)->lid;
 283
 284         memset(&data, 0, sizeof(data));
 285
 286         data.generic_type = IB_NOTICE_TYPE_INFO;
 287         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 288         data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
 289         data.issuer_lid = cpu_to_be32(lid);
 290         data.ntc_144.lid = data.issuer_lid;
 291         data.ntc_144.change_flags =
 292                 cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
 293
 294         send_trap(ibp, &data, sizeof(data));
 295 }
 296
 297 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
 298                                    u8 *data, struct ib_device *ibdev,
 299                                    u8 port, u32 *resp_len)
 300 {
 301         struct opa_node_description *nd;
 302
 303         if (am) {
 304                 smp->status |= IB_SMP_INVALID_FIELD;
 305                 return reply((struct ib_mad_hdr *)smp);
 306         }
 307
 308         nd = (struct opa_node_description *)data;
 309
 310         memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
 311
 312         if (resp_len)
 313                 *resp_len += sizeof(*nd);
 314
 315         return reply((struct ib_mad_hdr *)smp);
 316 }
 317
 318 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
 319                                    struct ib_device *ibdev, u8 port,
 320                                    u32 *resp_len)
 321 {
 322         struct opa_node_info *ni;
 323         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 324         unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
 325
 326         ni = (struct opa_node_info *)data;
 327
 328         /* GUID 0 is illegal */
 329         if (am || pidx >= dd->num_pports || dd->pport[pidx].guid == 0) {
 330                 smp->status |= IB_SMP_INVALID_FIELD;
 331                 return reply((struct ib_mad_hdr *)smp);
 332         }
 333
 334         ni->port_guid = cpu_to_be64(dd->pport[pidx].guid);
 335         ni->base_version = OPA_MGMT_BASE_VERSION;
 336         ni->class_version = OPA_SMI_CLASS_VERSION;
 337         ni->node_type = 1;     /* channel adapter */
 338         ni->num_ports = ibdev->phys_port_cnt;
 339         /* This is already in network order */
 340         ni->system_image_guid = ib_hfi1_sys_image_guid;
 341         /* Use first-port GUID as node */
 342         ni->node_guid = cpu_to_be64(dd->pport->guid);
 343         ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 344         ni->device_id = cpu_to_be16(dd->pcidev->device);
 345         ni->revision = cpu_to_be32(dd->minrev);
 346         ni->local_port_num = port;
 347         ni->vendor_id[0] = dd->oui1;
 348         ni->vendor_id[1] = dd->oui2;
 349         ni->vendor_id[2] = dd->oui3;
 350
 351         if (resp_len)
 352                 *resp_len += sizeof(*ni);
 353
 354         return reply((struct ib_mad_hdr *)smp);
 355 }
 356
 357 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
 358                              u8 port)
 359 {
 360         struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
 361         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 362         unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
 363
 364         /* GUID 0 is illegal */
 365         if (smp->attr_mod || pidx >= dd->num_pports ||
 366             dd->pport[pidx].guid == 0)
 367                 smp->status |= IB_SMP_INVALID_FIELD;
 368         else
 369                 nip->port_guid = cpu_to_be64(dd->pport[pidx].guid);
 370
 371         nip->base_version = OPA_MGMT_BASE_VERSION;
 372         nip->class_version = OPA_SMI_CLASS_VERSION;
 373         nip->node_type = 1;     /* channel adapter */
 374         nip->num_ports = ibdev->phys_port_cnt;
 375         /* This is already in network order */
 376         nip->sys_guid = ib_hfi1_sys_image_guid;
 377          /* Use first-port GUID as node */
 378         nip->node_guid = cpu_to_be64(dd->pport->guid);
 379         nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 380         nip->device_id = cpu_to_be16(dd->pcidev->device);
 381         nip->revision = cpu_to_be32(dd->minrev);
 382         nip->local_port_num = port;
 383         nip->vendor_id[0] = dd->oui1;
 384         nip->vendor_id[1] = dd->oui2;
 385         nip->vendor_id[2] = dd->oui3;
 386
 387         return reply((struct ib_mad_hdr *)smp);
 388 }
 389
 390 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
 391 {
 392         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
 393 }
 394
 395 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
 396 {
 397         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
 398 }
 399
 400 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
 401 {
 402         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
 403 }
 404
 405 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 406                       int mad_flags, __be64 mkey, __be32 dr_slid,
 407                       u8 return_path[], u8 hop_cnt)
 408 {
 409         int valid_mkey = 0;
 410         int ret = 0;
 411
 412         /* Is the mkey in the process of expiring? */
 413         if (ibp->rvp.mkey_lease_timeout &&
 414             time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
 415                 /* Clear timeout and mkey protection field. */
 416                 ibp->rvp.mkey_lease_timeout = 0;
 417                 ibp->rvp.mkeyprot = 0;
 418         }
 419
 420         if ((mad_flags & IB_MAD_IGNORE_MKEY) ||  ibp->rvp.mkey == 0 ||
 421             ibp->rvp.mkey == mkey)
 422                 valid_mkey = 1;
 423
 424         /* Unset lease timeout on any valid Get/Set/TrapRepress */
 425         if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
 426             (mad->method == IB_MGMT_METHOD_GET ||
 427              mad->method == IB_MGMT_METHOD_SET ||
 428              mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
 429                 ibp->rvp.mkey_lease_timeout = 0;
 430
 431         if (!valid_mkey) {
 432                 switch (mad->method) {
 433                 case IB_MGMT_METHOD_GET:
 434                         /* Bad mkey not a violation below level 2 */
 435                         if (ibp->rvp.mkeyprot < 2)
 436                                 break;
 437                 case IB_MGMT_METHOD_SET:
 438                 case IB_MGMT_METHOD_TRAP_REPRESS:
 439                         if (ibp->rvp.mkey_violations != 0xFFFF)
 440                                 ++ibp->rvp.mkey_violations;
 441                         if (!ibp->rvp.mkey_lease_timeout &&
 442                             ibp->rvp.mkey_lease_period)
 443                                 ibp->rvp.mkey_lease_timeout = jiffies +
 444                                         ibp->rvp.mkey_lease_period * HZ;
 445                         /* Generate a trap notice. */
 446                         bad_mkey(ibp, mad, mkey, dr_slid, return_path,
 447                                  hop_cnt);
 448                         ret = 1;
 449                 }
 450         }
 451
 452         return ret;
 453 }
 454
 455 /*
 456  * The SMA caches reads from LCB registers in case the LCB is unavailable.
 457  * (The LCB is unavailable in certain link states, for example.)
 458  */
 459 struct lcb_datum {
 460         u32 off;
 461         u64 val;
 462 };
 463
 464 static struct lcb_datum lcb_cache[] = {
 465         { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
 466 };
 467
 468 static int write_lcb_cache(u32 off, u64 val)
 469 {
 470         int i;
 471
 472         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 473                 if (lcb_cache[i].off == off) {
 474                         lcb_cache[i].val = val;
 475                         return 0;
 476                 }
 477         }
 478
 479         pr_warn("%s bad offset 0x%x\n", __func__, off);
 480         return -1;
 481 }
 482
 483 static int read_lcb_cache(u32 off, u64 *val)
 484 {
 485         int i;
 486
 487         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 488                 if (lcb_cache[i].off == off) {
 489                         *val = lcb_cache[i].val;
 490                         return 0;
 491                 }
 492         }
 493
 494         pr_warn("%s bad offset 0x%x\n", __func__, off);
 495         return -1;
 496 }
 497
 498 void read_ltp_rtt(struct hfi1_devdata *dd)
 499 {
 500         u64 reg;
 501
 502         if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
 503                 dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
 504         else
 505                 write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
 506 }
 507
 508 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
 509                                    struct ib_device *ibdev, u8 port,
 510                                    u32 *resp_len)
 511 {
 512         int i;
 513         struct hfi1_devdata *dd;
 514         struct hfi1_pportdata *ppd;
 515         struct hfi1_ibport *ibp;
 516         struct opa_port_info *pi = (struct opa_port_info *)data;
 517         u8 mtu;
 518         u8 credit_rate;
 519         u8 is_beaconing_active;
 520         u32 state;
 521         u32 num_ports = OPA_AM_NPORT(am);
 522         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
 523         u32 buffer_units;
 524         u64 tmp = 0;
 525
 526         if (num_ports != 1) {
 527                 smp->status |= IB_SMP_INVALID_FIELD;
 528                 return reply((struct ib_mad_hdr *)smp);
 529         }
 530
 531         dd = dd_from_ibdev(ibdev);
 532         /* IB numbers ports from 1, hw from 0 */
 533         ppd = dd->pport + (port - 1);
 534         ibp = &ppd->ibport_data;
 535
 536         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
 537             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
 538                 smp->status |= IB_SMP_INVALID_FIELD;
 539                 return reply((struct ib_mad_hdr *)smp);
 540         }
 541
 542         pi->lid = cpu_to_be32(ppd->lid);
 543
 544         /* Only return the mkey if the protection field allows it. */
 545         if (!(smp->method == IB_MGMT_METHOD_GET &&
 546               ibp->rvp.mkey != smp->mkey &&
 547               ibp->rvp.mkeyprot == 1))
 548                 pi->mkey = ibp->rvp.mkey;
 549
 550         pi->subnet_prefix = ibp->rvp.gid_prefix;
 551         pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid);
 552         pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 553         pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
 554         pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
 555         pi->sa_qp = cpu_to_be32(ppd->sa_qp);
 556
 557         pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
 558         pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
 559         pi->link_width.active = cpu_to_be16(ppd->link_width_active);
 560
 561         pi->link_width_downgrade.supported =
 562                         cpu_to_be16(ppd->link_width_downgrade_supported);
 563         pi->link_width_downgrade.enabled =
 564                         cpu_to_be16(ppd->link_width_downgrade_enabled);
 565         pi->link_width_downgrade.tx_active =
 566                         cpu_to_be16(ppd->link_width_downgrade_tx_active);
 567         pi->link_width_downgrade.rx_active =
 568                         cpu_to_be16(ppd->link_width_downgrade_rx_active);
 569
 570         pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
 571         pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
 572         pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
 573
 574         state = driver_lstate(ppd);
 575
 576         if (start_of_sm_config && (state == IB_PORT_INIT))
 577                 ppd->is_sm_config_started = 1;
 578
 579         pi->port_phys_conf = (ppd->port_type & 0xf);
 580
 581 #if PI_LED_ENABLE_SUP
 582         pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
 583         pi->port_states.ledenable_offlinereason |=
 584                 ppd->is_sm_config_started << 5;
 585         /*
 586          * This pairs with the memory barrier in hfi1_start_led_override to
 587          * ensure that we read the correct state of LED beaconing represented
 588          * by led_override_timer_active
 589          */
 590         smp_rmb();
 591         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
 592         pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
 593         pi->port_states.ledenable_offlinereason |=
 594                 ppd->offline_disabled_reason;
 595 #else
 596         pi->port_states.offline_reason = ppd->neighbor_normal << 4;
 597         pi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
 598         pi->port_states.offline_reason |= ppd->offline_disabled_reason;
 599 #endif /* PI_LED_ENABLE_SUP */
 600
 601         pi->port_states.portphysstate_portstate =
 602                 (hfi1_ibphys_portstate(ppd) << 4) | state;
 603
 604         pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
 605
 606         memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
 607         for (i = 0; i < ppd->vls_supported; i++) {
 608                 mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
 609                 if ((i % 2) == 0)
 610                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4);
 611                 else
 612                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu;
 613         }
 614         /* don't forget VL 15 */
 615         mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
 616         pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu;
 617         pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL;
 618         pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
 619         pi->partenforce_filterraw |=
 620                 (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
 621         if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
 622                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
 623         if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
 624                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
 625         pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
 626         /* P_KeyViolations are counted by hardware. */
 627         pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
 628         pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
 629
 630         pi->vl.cap = ppd->vls_supported;
 631         pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit);
 632         pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
 633         pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
 634
 635         pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout;
 636
 637         pi->port_link_mode  = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
 638                                           OPA_PORT_LINK_MODE_OPA << 5 |
 639                                           OPA_PORT_LINK_MODE_OPA);
 640
 641         pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
 642
 643         pi->port_mode = cpu_to_be16(
 644                                 ppd->is_active_optimize_enabled ?
 645                                         OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
 646
 647         pi->port_packet_format.supported =
 648                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
 649         pi->port_packet_format.enabled =
 650                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
 651
 652         /* flit_control.interleave is (OPA V1, version .76):
 653          * bits         use
 654          * ----         ---
 655          * 2            res
 656          * 2            DistanceSupported
 657          * 2            DistanceEnabled
 658          * 5            MaxNextLevelTxEnabled
 659          * 5            MaxNestLevelRxSupported
 660          *
 661          * HFI supports only "distance mode 1" (see OPA V1, version .76,
 662          * section 9.6.2), so set DistanceSupported, DistanceEnabled
 663          * to 0x1.
 664          */
 665         pi->flit_control.interleave = cpu_to_be16(0x1400);
 666
 667         pi->link_down_reason = ppd->local_link_down_reason.sma;
 668         pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
 669         pi->port_error_action = cpu_to_be32(ppd->port_error_action);
 670         pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
 671
 672         /* 32.768 usec. response time (guessing) */
 673         pi->resptimevalue = 3;
 674
 675         pi->local_port_num = port;
 676
 677         /* buffer info for FM */
 678         pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
 679
 680         pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
 681         pi->neigh_port_num = ppd->neighbor_port_number;
 682         pi->port_neigh_mode =
 683                 (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
 684                 (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
 685                 (ppd->neighbor_fm_security ?
 686                         OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
 687
 688         /* HFIs shall always return VL15 credits to their
 689          * neighbor in a timely manner, without any credit return pacing.
 690          */
 691         credit_rate = 0;
 692         buffer_units  = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
 693         buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
 694         buffer_units |= (credit_rate << 6) &
 695                                 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
 696         buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
 697         pi->buffer_units = cpu_to_be32(buffer_units);
 698
 699         pi->opa_cap_mask = cpu_to_be16(OPA_CAP_MASK3_IsSharedSpaceSupported);
 700
 701         /* HFI supports a replay buffer 128 LTPs in size */
 702         pi->replay_depth.buffer = 0x80;
 703         /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
 704         read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
 705
 706         /*
 707          * this counter is 16 bits wide, but the replay_depth.wire
 708          * variable is only 8 bits
 709          */
 710         if (tmp > 0xff)
 711                 tmp = 0xff;
 712         pi->replay_depth.wire = tmp;
 713
 714         if (resp_len)
 715                 *resp_len += sizeof(struct opa_port_info);
 716
 717         return reply((struct ib_mad_hdr *)smp);
 718 }
 719
 720 /**
 721  * get_pkeys - return the PKEY table
 722  * @dd: the hfi1_ib device
 723  * @port: the IB port number
 724  * @pkeys: the pkey table is placed here
 725  */
 726 static int get_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
 727 {
 728         struct hfi1_pportdata *ppd = dd->pport + port - 1;
 729
 730         memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
 731
 732         return 0;
 733 }
 734
 735 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
 736                                     struct ib_device *ibdev, u8 port,
 737                                     u32 *resp_len)
 738 {
 739         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 740         u32 n_blocks_req = OPA_AM_NBLK(am);
 741         u32 start_block = am & 0x7ff;
 742         __be16 *p;
 743         u16 *q;
 744         int i;
 745         u16 n_blocks_avail;
 746         unsigned npkeys = hfi1_get_npkeys(dd);
 747         size_t size;
 748
 749         if (n_blocks_req == 0) {
 750                 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
 751                         port, start_block, n_blocks_req);
 752                 smp->status |= IB_SMP_INVALID_FIELD;
 753                 return reply((struct ib_mad_hdr *)smp);
 754         }
 755
 756         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
 757
 758         size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16);
 759
 760         if (start_block + n_blocks_req > n_blocks_avail ||
 761             n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
 762                 pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; "
 763                         "avail 0x%x; blk/smp 0x%lx\n",
 764                         start_block, n_blocks_req, n_blocks_avail,
 765                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
 766                 smp->status |= IB_SMP_INVALID_FIELD;
 767                 return reply((struct ib_mad_hdr *)smp);
 768         }
 769
 770         p = (__be16 *)data;
 771         q = (u16 *)data;
 772         /* get the real pkeys if we are requesting the first block */
 773         if (start_block == 0) {
 774                 get_pkeys(dd, port, q);
 775                 for (i = 0; i < npkeys; i++)
 776                         p[i] = cpu_to_be16(q[i]);
 777                 if (resp_len)
 778                         *resp_len += size;
 779         } else {
 780                 smp->status |= IB_SMP_INVALID_FIELD;
 781         }
 782         return reply((struct ib_mad_hdr *)smp);
 783 }
 784
 785 enum {
 786         HFI_TRANSITION_DISALLOWED,
 787         HFI_TRANSITION_IGNORED,
 788         HFI_TRANSITION_ALLOWED,
 789         HFI_TRANSITION_UNDEFINED,
 790 };
 791
 792 /*
 793  * Use shortened names to improve readability of
 794  * {logical,physical}_state_transitions
 795  */
 796 enum {
 797         __D = HFI_TRANSITION_DISALLOWED,
 798         __I = HFI_TRANSITION_IGNORED,
 799         __A = HFI_TRANSITION_ALLOWED,
 800         __U = HFI_TRANSITION_UNDEFINED,
 801 };
 802
 803 /*
 804  * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are
 805  * represented in physical_state_transitions.
 806  */
 807 #define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1)
 808
 809 /*
 810  * Within physical_state_transitions, rows represent "old" states,
 811  * columns "new" states, and physical_state_transitions.allowed[old][new]
 812  * indicates if the transition from old state to new state is legal (see
 813  * OPAg1v1, Table 6-4).
 814  */
 815 static const struct {
 816         u8 allowed[__N_PHYSTATES][__N_PHYSTATES];
 817 } physical_state_transitions = {
 818         {
 819                 /* 2    3    4    5    6    7    8    9   10   11 */
 820         /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D },
 821         /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A },
 822         /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 823         /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D },
 824         /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 825         /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D },
 826         /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 827         /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D },
 828         /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 829         /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I },
 830         }
 831 };
 832
 833 /*
 834  * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented
 835  * logical_state_transitions
 836  */
 837
 838 #define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1)
 839
 840 /*
 841  * Within logical_state_transitions rows represent "old" states,
 842  * columns "new" states, and logical_state_transitions.allowed[old][new]
 843  * indicates if the transition from old state to new state is legal (see
 844  * OPAg1v1, Table 9-12).
 845  */
 846 static const struct {
 847         u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES];
 848 } logical_state_transitions = {
 849         {
 850                 /* 1    2    3    4    5 */
 851         /* 1 */ { __I, __D, __D, __D, __U},
 852         /* 2 */ { __D, __I, __A, __D, __U},
 853         /* 3 */ { __D, __D, __I, __A, __U},
 854         /* 4 */ { __D, __D, __I, __I, __U},
 855         /* 5 */ { __U, __U, __U, __U, __U},
 856         }
 857 };
 858
 859 static int logical_transition_allowed(int old, int new)
 860 {
 861         if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER ||
 862             new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) {
 863                 pr_warn("invalid logical state(s) (old %d new %d)\n",
 864                         old, new);
 865                 return HFI_TRANSITION_UNDEFINED;
 866         }
 867
 868         if (new == IB_PORT_NOP)
 869                 return HFI_TRANSITION_ALLOWED; /* always allowed */
 870
 871         /* adjust states for indexing into logical_state_transitions */
 872         old -= IB_PORT_DOWN;
 873         new -= IB_PORT_DOWN;
 874
 875         if (old < 0 || new < 0)
 876                 return HFI_TRANSITION_UNDEFINED;
 877         return logical_state_transitions.allowed[old][new];
 878 }
 879
 880 static int physical_transition_allowed(int old, int new)
 881 {
 882         if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX ||
 883             new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) {
 884                 pr_warn("invalid physical state(s) (old %d new %d)\n",
 885                         old, new);
 886                 return HFI_TRANSITION_UNDEFINED;
 887         }
 888
 889         if (new == IB_PORTPHYSSTATE_NOP)
 890                 return HFI_TRANSITION_ALLOWED; /* always allowed */
 891
 892         /* adjust states for indexing into physical_state_transitions */
 893         old -= IB_PORTPHYSSTATE_POLLING;
 894         new -= IB_PORTPHYSSTATE_POLLING;
 895
 896         if (old < 0 || new < 0)
 897                 return HFI_TRANSITION_UNDEFINED;
 898         return physical_state_transitions.allowed[old][new];
 899 }
 900
 901 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
 902                                           u32 logical_new, u32 physical_new)
 903 {
 904         u32 physical_old = driver_physical_state(ppd);
 905         u32 logical_old = driver_logical_state(ppd);
 906         int ret, logical_allowed, physical_allowed;
 907
 908         ret = logical_transition_allowed(logical_old, logical_new);
 909         logical_allowed = ret;
 910
 911         if (ret == HFI_TRANSITION_DISALLOWED ||
 912             ret == HFI_TRANSITION_UNDEFINED) {
 913                 pr_warn("invalid logical state transition %s -> %s\n",
 914                         opa_lstate_name(logical_old),
 915                         opa_lstate_name(logical_new));
 916                 return ret;
 917         }
 918
 919         ret = physical_transition_allowed(physical_old, physical_new);
 920         physical_allowed = ret;
 921
 922         if (ret == HFI_TRANSITION_DISALLOWED ||
 923             ret == HFI_TRANSITION_UNDEFINED) {
 924                 pr_warn("invalid physical state transition %s -> %s\n",
 925                         opa_pstate_name(physical_old),
 926                         opa_pstate_name(physical_new));
 927                 return ret;
 928         }
 929
 930         if (logical_allowed == HFI_TRANSITION_IGNORED &&
 931             physical_allowed == HFI_TRANSITION_IGNORED)
 932                 return HFI_TRANSITION_IGNORED;
 933
 934         /*
 935          * A change request of Physical Port State from
 936          * 'Offline' to 'Polling' should be ignored.
 937          */
 938         if ((physical_old == OPA_PORTPHYSSTATE_OFFLINE) &&
 939             (physical_new == IB_PORTPHYSSTATE_POLLING))
 940                 return HFI_TRANSITION_IGNORED;
 941
 942         /*
 943          * Either physical_allowed or logical_allowed is
 944          * HFI_TRANSITION_ALLOWED.
 945          */
 946         return HFI_TRANSITION_ALLOWED;
 947 }
 948
 949 static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
 950                            u32 logical_state, u32 phys_state,
 951                            int suppress_idle_sma)
 952 {
 953         struct hfi1_devdata *dd = ppd->dd;
 954         u32 link_state;
 955         int ret;
 956
 957         ret = port_states_transition_allowed(ppd, logical_state, phys_state);
 958         if (ret == HFI_TRANSITION_DISALLOWED ||
 959             ret == HFI_TRANSITION_UNDEFINED) {
 960                 /* error message emitted above */
 961                 smp->status |= IB_SMP_INVALID_FIELD;
 962                 return 0;
 963         }
 964
 965         if (ret == HFI_TRANSITION_IGNORED)
 966                 return 0;
 967
 968         if ((phys_state != IB_PORTPHYSSTATE_NOP) &&
 969             !(logical_state == IB_PORT_DOWN ||
 970               logical_state == IB_PORT_NOP)){
 971                 pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n",
 972                         logical_state, phys_state);
 973                 smp->status |= IB_SMP_INVALID_FIELD;
 974         }
 975
 976         /*
 977          * Logical state changes are summarized in OPAv1g1 spec.,
 978          * Table 9-12; physical state changes are summarized in
 979          * OPAv1g1 spec., Table 6.4.
 980          */
 981         switch (logical_state) {
 982         case IB_PORT_NOP:
 983                 if (phys_state == IB_PORTPHYSSTATE_NOP)
 984                         break;
 985                 /* FALLTHROUGH */
 986         case IB_PORT_DOWN:
 987                 if (phys_state == IB_PORTPHYSSTATE_NOP) {
 988                         link_state = HLS_DN_DOWNDEF;
 989                 } else if (phys_state == IB_PORTPHYSSTATE_POLLING) {
 990                         link_state = HLS_DN_POLL;
 991                         set_link_down_reason(ppd, OPA_LINKDOWN_REASON_FM_BOUNCE,
 992                                              0, OPA_LINKDOWN_REASON_FM_BOUNCE);
 993                 } else if (phys_state == IB_PORTPHYSSTATE_DISABLED) {
 994                         link_state = HLS_DN_DISABLE;
 995                 } else {
 996                         pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n",
 997                                 phys_state);
 998                         smp->status |= IB_SMP_INVALID_FIELD;
 999                         break;
1000                 }
1001
1002                 if ((link_state == HLS_DN_POLL ||
1003                      link_state == HLS_DN_DOWNDEF)) {
1004                         /*
1005                          * Going to poll.  No matter what the current state,
1006                          * always move offline first, then tune and start the
1007                          * link.  This correctly handles a FM link bounce and
1008                          * a link enable.  Going offline is a no-op if already
1009                          * offline.
1010                          */
1011                         set_link_state(ppd, HLS_DN_OFFLINE);
1012                         tune_serdes(ppd);
1013                         start_link(ppd);
1014                 } else {
1015                         set_link_state(ppd, link_state);
1016                 }
1017                 if (link_state == HLS_DN_DISABLE &&
1018                     (ppd->offline_disabled_reason >
1019                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
1020                      ppd->offline_disabled_reason ==
1021                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
1022                         ppd->offline_disabled_reason =
1023                         HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
1024                 /*
1025                  * Don't send a reply if the response would be sent
1026                  * through the disabled port.
1027                  */
1028                 if (link_state == HLS_DN_DISABLE && smp->hop_cnt)
1029                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1030                 break;
1031         case IB_PORT_ARMED:
1032                 ret = set_link_state(ppd, HLS_UP_ARMED);
1033                 if ((ret == 0) && (suppress_idle_sma == 0))
1034                         send_idle_sma(dd, SMA_IDLE_ARM);
1035                 break;
1036         case IB_PORT_ACTIVE:
1037                 if (ppd->neighbor_normal) {
1038                         ret = set_link_state(ppd, HLS_UP_ACTIVE);
1039                         if (ret == 0)
1040                                 send_idle_sma(dd, SMA_IDLE_ACTIVE);
1041                 } else {
1042                         pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
1043                         smp->status |= IB_SMP_INVALID_FIELD;
1044                 }
1045                 break;
1046         default:
1047                 pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
1048                         logical_state);
1049                 smp->status |= IB_SMP_INVALID_FIELD;
1050         }
1051
1052         return 0;
1053 }
1054
1055 /**
1056  * subn_set_opa_portinfo - set port information
1057  * @smp: the incoming SM packet
1058  * @ibdev: the infiniband device
1059  * @port: the port on the device
1060  *
1061  */
1062 static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
1063                                    struct ib_device *ibdev, u8 port,
1064                                    u32 *resp_len)
1065 {
1066         struct opa_port_info *pi = (struct opa_port_info *)data;
1067         struct ib_event event;
1068         struct hfi1_devdata *dd;
1069         struct hfi1_pportdata *ppd;
1070         struct hfi1_ibport *ibp;
1071         u8 clientrereg;
1072         unsigned long flags;
1073         u32 smlid, opa_lid; /* tmp vars to hold LID values */
1074         u16 lid;
1075         u8 ls_old, ls_new, ps_new;
1076         u8 vls;
1077         u8 msl;
1078         u8 crc_enabled;
1079         u16 lse, lwe, mtu;
1080         u32 num_ports = OPA_AM_NPORT(am);
1081         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1082         int ret, i, invalid = 0, call_set_mtu = 0;
1083         int call_link_downgrade_policy = 0;
1084
1085         if (num_ports != 1) {
1086                 smp->status |= IB_SMP_INVALID_FIELD;
1087                 return reply((struct ib_mad_hdr *)smp);
1088         }
1089
1090         opa_lid = be32_to_cpu(pi->lid);
1091         if (opa_lid & 0xFFFF0000) {
1092                 pr_warn("OPA_PortInfo lid out of range: %X\n", opa_lid);
1093                 smp->status |= IB_SMP_INVALID_FIELD;
1094                 goto get_only;
1095         }
1096
1097         lid = (u16)(opa_lid & 0x0000FFFF);
1098
1099         smlid = be32_to_cpu(pi->sm_lid);
1100         if (smlid & 0xFFFF0000) {
1101                 pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid);
1102                 smp->status |= IB_SMP_INVALID_FIELD;
1103                 goto get_only;
1104         }
1105         smlid &= 0x0000FFFF;
1106
1107         clientrereg = (pi->clientrereg_subnettimeout &
1108                         OPA_PI_MASK_CLIENT_REREGISTER);
1109
1110         dd = dd_from_ibdev(ibdev);
1111         /* IB numbers ports from 1, hw from 0 */
1112         ppd = dd->pport + (port - 1);
1113         ibp = &ppd->ibport_data;
1114         event.device = ibdev;
1115         event.element.port_num = port;
1116
1117         ls_old = driver_lstate(ppd);
1118
1119         ibp->rvp.mkey = pi->mkey;
1120         ibp->rvp.gid_prefix = pi->subnet_prefix;
1121         ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
1122
1123         /* Must be a valid unicast LID address. */
1124         if ((lid == 0 && ls_old > IB_PORT_INIT) ||
1125             lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
1126                 smp->status |= IB_SMP_INVALID_FIELD;
1127                 pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n",
1128                         lid);
1129         } else if (ppd->lid != lid ||
1130                  ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) {
1131                 if (ppd->lid != lid)
1132                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT);
1133                 if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
1134                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT);
1135                 hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
1136                 event.event = IB_EVENT_LID_CHANGE;
1137                 ib_dispatch_event(&event);
1138         }
1139
1140         msl = pi->smsl & OPA_PI_MASK_SMSL;
1141         if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON)
1142                 ppd->linkinit_reason =
1143                         (pi->partenforce_filterraw &
1144                          OPA_PI_MASK_LINKINIT_REASON);
1145         /* enable/disable SW pkey checking as per FM control */
1146         if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_IN)
1147                 ppd->part_enforce |= HFI1_PART_ENFORCE_IN;
1148         else
1149                 ppd->part_enforce &= ~HFI1_PART_ENFORCE_IN;
1150
1151         if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_OUT)
1152                 ppd->part_enforce |= HFI1_PART_ENFORCE_OUT;
1153         else
1154                 ppd->part_enforce &= ~HFI1_PART_ENFORCE_OUT;
1155
1156         /* Must be a valid unicast LID address. */
1157         if ((smlid == 0 && ls_old > IB_PORT_INIT) ||
1158             smlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
1159                 smp->status |= IB_SMP_INVALID_FIELD;
1160                 pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
1161         } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
1162                 pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid);
1163                 spin_lock_irqsave(&ibp->rvp.lock, flags);
1164                 if (ibp->rvp.sm_ah) {
1165                         if (smlid != ibp->rvp.sm_lid)
1166                                 ibp->rvp.sm_ah->attr.dlid = smlid;
1167                         if (msl != ibp->rvp.sm_sl)
1168                                 ibp->rvp.sm_ah->attr.sl = msl;
1169                 }
1170                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1171                 if (smlid != ibp->rvp.sm_lid)
1172                         ibp->rvp.sm_lid = smlid;
1173                 if (msl != ibp->rvp.sm_sl)
1174                         ibp->rvp.sm_sl = msl;
1175                 event.event = IB_EVENT_SM_CHANGE;
1176                 ib_dispatch_event(&event);
1177         }
1178
1179         if (pi->link_down_reason == 0) {
1180                 ppd->local_link_down_reason.sma = 0;
1181                 ppd->local_link_down_reason.latest = 0;
1182         }
1183
1184         if (pi->neigh_link_down_reason == 0) {
1185                 ppd->neigh_link_down_reason.sma = 0;
1186                 ppd->neigh_link_down_reason.latest = 0;
1187         }
1188
1189         ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp);
1190         ppd->sa_qp = be32_to_cpu(pi->sa_qp);
1191
1192         ppd->port_error_action = be32_to_cpu(pi->port_error_action);
1193         lwe = be16_to_cpu(pi->link_width.enabled);
1194         if (lwe) {
1195                 if (lwe == OPA_LINK_WIDTH_RESET ||
1196                     lwe == OPA_LINK_WIDTH_RESET_OLD)
1197                         set_link_width_enabled(ppd, ppd->link_width_supported);
1198                 else if ((lwe & ~ppd->link_width_supported) == 0)
1199                         set_link_width_enabled(ppd, lwe);
1200                 else
1201                         smp->status |= IB_SMP_INVALID_FIELD;
1202         }
1203         lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
1204         /* LWD.E is always applied - 0 means "disabled" */
1205         if (lwe == OPA_LINK_WIDTH_RESET ||
1206             lwe == OPA_LINK_WIDTH_RESET_OLD) {
1207                 set_link_width_downgrade_enabled(ppd,
1208                                                  ppd->
1209                                                  link_width_downgrade_supported
1210                                                  );
1211         } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) {
1212                 /* only set and apply if something changed */
1213                 if (lwe != ppd->link_width_downgrade_enabled) {
1214                         set_link_width_downgrade_enabled(ppd, lwe);
1215                         call_link_downgrade_policy = 1;
1216                 }
1217         } else {
1218                 smp->status |= IB_SMP_INVALID_FIELD;
1219         }
1220         lse = be16_to_cpu(pi->link_speed.enabled);
1221         if (lse) {
1222                 if (lse & be16_to_cpu(pi->link_speed.supported))
1223                         set_link_speed_enabled(ppd, lse);
1224                 else
1225                         smp->status |= IB_SMP_INVALID_FIELD;
1226         }
1227
1228         ibp->rvp.mkeyprot =
1229                 (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6;
1230         ibp->rvp.vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF;
1231         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT,
1232                                     ibp->rvp.vl_high_limit);
1233
1234         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
1235             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
1236                 smp->status |= IB_SMP_INVALID_FIELD;
1237                 return reply((struct ib_mad_hdr *)smp);
1238         }
1239         for (i = 0; i < ppd->vls_supported; i++) {
1240                 if ((i % 2) == 0)
1241                         mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i / 2] >>
1242                                            4) & 0xF);
1243                 else
1244                         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i / 2] &
1245                                           0xF);
1246                 if (mtu == 0xffff) {
1247                         pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n",
1248                                 mtu,
1249                                 (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
1250                         smp->status |= IB_SMP_INVALID_FIELD;
1251                         mtu = hfi1_max_mtu; /* use a valid MTU */
1252                 }
1253                 if (dd->vld[i].mtu != mtu) {
1254                         dd_dev_info(dd,
1255                                     "MTU change on vl %d from %d to %d\n",
1256                                     i, dd->vld[i].mtu, mtu);
1257                         dd->vld[i].mtu = mtu;
1258                         call_set_mtu++;
1259                 }
1260         }
1261         /* As per OPAV1 spec: VL15 must support and be configured
1262          * for operation with a 2048 or larger MTU.
1263          */
1264         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15 / 2] & 0xF);
1265         if (mtu < 2048 || mtu == 0xffff)
1266                 mtu = 2048;
1267         if (dd->vld[15].mtu != mtu) {
1268                 dd_dev_info(dd,
1269                             "MTU change on vl 15 from %d to %d\n",
1270                             dd->vld[15].mtu, mtu);
1271                 dd->vld[15].mtu = mtu;
1272                 call_set_mtu++;
1273         }
1274         if (call_set_mtu)
1275                 set_mtu(ppd);
1276
1277         /* Set operational VLs */
1278         vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
1279         if (vls) {
1280                 if (vls > ppd->vls_supported) {
1281                         pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
1282                                 pi->operational_vls);
1283                         smp->status |= IB_SMP_INVALID_FIELD;
1284                 } else {
1285                         if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS,
1286                                             vls) == -EINVAL)
1287                                 smp->status |= IB_SMP_INVALID_FIELD;
1288                 }
1289         }
1290
1291         if (pi->mkey_violations == 0)
1292                 ibp->rvp.mkey_violations = 0;
1293
1294         if (pi->pkey_violations == 0)
1295                 ibp->rvp.pkey_violations = 0;
1296
1297         if (pi->qkey_violations == 0)
1298                 ibp->rvp.qkey_violations = 0;
1299
1300         ibp->rvp.subnet_timeout =
1301                 pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT;
1302
1303         crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode);
1304         crc_enabled >>= 4;
1305         crc_enabled &= 0xf;
1306
1307         if (crc_enabled != 0)
1308                 ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled);
1309
1310         ppd->is_active_optimize_enabled =
1311                         !!(be16_to_cpu(pi->port_mode)
1312                                         & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE);
1313
1314         ls_new = pi->port_states.portphysstate_portstate &
1315                         OPA_PI_MASK_PORT_STATE;
1316         ps_new = (pi->port_states.portphysstate_portstate &
1317                         OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4;
1318
1319         if (ls_old == IB_PORT_INIT) {
1320                 if (start_of_sm_config) {
1321                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1322                                 ppd->is_sm_config_started = 1;
1323                 } else if (ls_new == IB_PORT_ARMED) {
1324                         if (ppd->is_sm_config_started == 0)
1325                                 invalid = 1;
1326                 }
1327         }
1328
1329         /* Handle CLIENT_REREGISTER event b/c SM asked us for it */
1330         if (clientrereg) {
1331                 event.event = IB_EVENT_CLIENT_REREGISTER;
1332                 ib_dispatch_event(&event);
1333         }
1334
1335         /*
1336          * Do the port state change now that the other link parameters
1337          * have been set.
1338          * Changing the port physical state only makes sense if the link
1339          * is down or is being set to down.
1340          */
1341
1342         ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1343         if (ret)
1344                 return ret;
1345
1346         ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1347
1348         /* restore re-reg bit per o14-12.2.1 */
1349         pi->clientrereg_subnettimeout |= clientrereg;
1350
1351         /*
1352          * Apply the new link downgrade policy.  This may result in a link
1353          * bounce.  Do this after everything else so things are settled.
1354          * Possible problem: if setting the port state above fails, then
1355          * the policy change is not applied.
1356          */
1357         if (call_link_downgrade_policy)
1358                 apply_link_downgrade_policy(ppd, 0);
1359
1360         return ret;
1361
1362 get_only:
1363         return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1364 }
1365
1366 /**
1367  * set_pkeys - set the PKEY table for ctxt 0
1368  * @dd: the hfi1_ib device
1369  * @port: the IB port number
1370  * @pkeys: the PKEY table
1371  */
1372 static int set_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
1373 {
1374         struct hfi1_pportdata *ppd;
1375         int i;
1376         int changed = 0;
1377         int update_includes_mgmt_partition = 0;
1378
1379         /*
1380          * IB port one/two always maps to context zero/one,
1381          * always a kernel context, no locking needed
1382          * If we get here with ppd setup, no need to check
1383          * that rcd is valid.
1384          */
1385         ppd = dd->pport + (port - 1);
1386         /*
1387          * If the update does not include the management pkey, don't do it.
1388          */
1389         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1390                 if (pkeys[i] == LIM_MGMT_P_KEY) {
1391                         update_includes_mgmt_partition = 1;
1392                         break;
1393                 }
1394         }
1395
1396         if (!update_includes_mgmt_partition)
1397                 return 1;
1398
1399         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1400                 u16 key = pkeys[i];
1401                 u16 okey = ppd->pkeys[i];
1402
1403                 if (key == okey)
1404                         continue;
1405                 /*
1406                  * Don't update pkeys[2], if an HFI port without MgmtAllowed
1407                  * by neighbor is a switch.
1408                  */
1409                 if (i == 2 && !ppd->mgmt_allowed && ppd->neighbor_type == 1)
1410                         continue;
1411                 /*
1412                  * The SM gives us the complete PKey table. We have
1413                  * to ensure that we put the PKeys in the matching
1414                  * slots.
1415                  */
1416                 ppd->pkeys[i] = key;
1417                 changed = 1;
1418         }
1419
1420         if (changed) {
1421                 struct ib_event event;
1422
1423                 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0);
1424
1425                 event.event = IB_EVENT_PKEY_CHANGE;
1426                 event.device = &dd->verbs_dev.rdi.ibdev;
1427                 event.element.port_num = port;
1428                 ib_dispatch_event(&event);
1429         }
1430         return 0;
1431 }
1432
1433 static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1434                                     struct ib_device *ibdev, u8 port,
1435                                     u32 *resp_len)
1436 {
1437         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1438         u32 n_blocks_sent = OPA_AM_NBLK(am);
1439         u32 start_block = am & 0x7ff;
1440         u16 *p = (u16 *)data;
1441         __be16 *q = (__be16 *)data;
1442         int i;
1443         u16 n_blocks_avail;
1444         unsigned npkeys = hfi1_get_npkeys(dd);
1445
1446         if (n_blocks_sent == 0) {
1447                 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
1448                         port, start_block, n_blocks_sent);
1449                 smp->status |= IB_SMP_INVALID_FIELD;
1450                 return reply((struct ib_mad_hdr *)smp);
1451         }
1452
1453         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1454
1455         if (start_block + n_blocks_sent > n_blocks_avail ||
1456             n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1457                 pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n",
1458                         start_block, n_blocks_sent, n_blocks_avail,
1459                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
1460                 smp->status |= IB_SMP_INVALID_FIELD;
1461                 return reply((struct ib_mad_hdr *)smp);
1462         }
1463
1464         for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++)
1465                 p[i] = be16_to_cpu(q[i]);
1466
1467         if (start_block == 0 && set_pkeys(dd, port, p) != 0) {
1468                 smp->status |= IB_SMP_INVALID_FIELD;
1469                 return reply((struct ib_mad_hdr *)smp);
1470         }
1471
1472         return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len);
1473 }
1474
1475 static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1476 {
1477         u64 *val = data;
1478
1479         *val++ = read_csr(dd, SEND_SC2VLT0);
1480         *val++ = read_csr(dd, SEND_SC2VLT1);
1481         *val++ = read_csr(dd, SEND_SC2VLT2);
1482         *val++ = read_csr(dd, SEND_SC2VLT3);
1483         return 0;
1484 }
1485
1486 #define ILLEGAL_VL 12
1487 /*
1488  * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except
1489  * for SC15, which must map to VL15). If we don't remap things this
1490  * way it is possible for VL15 counters to increment when we try to
1491  * send on a SC which is mapped to an invalid VL.
1492  */
1493 static void filter_sc2vlt(void *data)
1494 {
1495         int i;
1496         u8 *pd = data;
1497
1498         for (i = 0; i < OPA_MAX_SCS; i++) {
1499                 if (i == 15)
1500                         continue;
1501                 if ((pd[i] & 0x1f) == 0xf)
1502                         pd[i] = ILLEGAL_VL;
1503         }
1504 }
1505
1506 static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1507 {
1508         u64 *val = data;
1509
1510         filter_sc2vlt(data);
1511
1512         write_csr(dd, SEND_SC2VLT0, *val++);
1513         write_csr(dd, SEND_SC2VLT1, *val++);
1514         write_csr(dd, SEND_SC2VLT2, *val++);
1515         write_csr(dd, SEND_SC2VLT3, *val++);
1516         write_seqlock_irq(&dd->sc2vl_lock);
1517         memcpy(dd->sc2vl, data, sizeof(dd->sc2vl));
1518         write_sequnlock_irq(&dd->sc2vl_lock);
1519         return 0;
1520 }
1521
1522 static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1523                                    struct ib_device *ibdev, u8 port,
1524                                    u32 *resp_len)
1525 {
1526         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1527         u8 *p = data;
1528         size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */
1529         unsigned i;
1530
1531         if (am) {
1532                 smp->status |= IB_SMP_INVALID_FIELD;
1533                 return reply((struct ib_mad_hdr *)smp);
1534         }
1535
1536         for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1537                 *p++ = ibp->sl_to_sc[i];
1538
1539         if (resp_len)
1540                 *resp_len += size;
1541
1542         return reply((struct ib_mad_hdr *)smp);
1543 }
1544
1545 static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1546                                    struct ib_device *ibdev, u8 port,
1547                                    u32 *resp_len)
1548 {
1549         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1550         u8 *p = data;
1551         int i;
1552         u8 sc;
1553
1554         if (am) {
1555                 smp->status |= IB_SMP_INVALID_FIELD;
1556                 return reply((struct ib_mad_hdr *)smp);
1557         }
1558
1559         for (i = 0; i <  ARRAY_SIZE(ibp->sl_to_sc); i++) {
1560                 sc = *p++;
1561                 if (ibp->sl_to_sc[i] != sc) {
1562                         ibp->sl_to_sc[i] = sc;
1563
1564                         /* Put all stale qps into error state */
1565                         hfi1_error_port_qps(ibp, i);
1566                 }
1567         }
1568
1569         return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len);
1570 }
1571
1572 static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1573                                    struct ib_device *ibdev, u8 port,
1574                                    u32 *resp_len)
1575 {
1576         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1577         u8 *p = data;
1578         size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */
1579         unsigned i;
1580
1581         if (am) {
1582                 smp->status |= IB_SMP_INVALID_FIELD;
1583                 return reply((struct ib_mad_hdr *)smp);
1584         }
1585
1586         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1587                 *p++ = ibp->sc_to_sl[i];
1588
1589         if (resp_len)
1590                 *resp_len += size;
1591
1592         return reply((struct ib_mad_hdr *)smp);
1593 }
1594
1595 static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1596                                    struct ib_device *ibdev, u8 port,
1597                                    u32 *resp_len)
1598 {
1599         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1600         u8 *p = data;
1601         int i;
1602
1603         if (am) {
1604                 smp->status |= IB_SMP_INVALID_FIELD;
1605                 return reply((struct ib_mad_hdr *)smp);
1606         }
1607
1608         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1609                 ibp->sc_to_sl[i] = *p++;
1610
1611         return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len);
1612 }
1613
1614 static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1615                                     struct ib_device *ibdev, u8 port,
1616                                     u32 *resp_len)
1617 {
1618         u32 n_blocks = OPA_AM_NBLK(am);
1619         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1620         void *vp = (void *)data;
1621         size_t size = 4 * sizeof(u64);
1622
1623         if (n_blocks != 1) {
1624                 smp->status |= IB_SMP_INVALID_FIELD;
1625                 return reply((struct ib_mad_hdr *)smp);
1626         }
1627
1628         get_sc2vlt_tables(dd, vp);
1629
1630         if (resp_len)
1631                 *resp_len += size;
1632
1633         return reply((struct ib_mad_hdr *)smp);
1634 }
1635
1636 static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1637                                     struct ib_device *ibdev, u8 port,
1638                                     u32 *resp_len)
1639 {
1640         u32 n_blocks = OPA_AM_NBLK(am);
1641         int async_update = OPA_AM_ASYNC(am);
1642         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1643         void *vp = (void *)data;
1644         struct hfi1_pportdata *ppd;
1645         int lstate;
1646
1647         if (n_blocks != 1 || async_update) {
1648                 smp->status |= IB_SMP_INVALID_FIELD;
1649                 return reply((struct ib_mad_hdr *)smp);
1650         }
1651
1652         /* IB numbers ports from 1, hw from 0 */
1653         ppd = dd->pport + (port - 1);
1654         lstate = driver_lstate(ppd);
1655         /*
1656          * it's known that async_update is 0 by this point, but include
1657          * the explicit check for clarity
1658          */
1659         if (!async_update &&
1660             (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) {
1661                 smp->status |= IB_SMP_INVALID_FIELD;
1662                 return reply((struct ib_mad_hdr *)smp);
1663         }
1664
1665         set_sc2vlt_tables(dd, vp);
1666
1667         return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len);
1668 }
1669
1670 static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1671                                      struct ib_device *ibdev, u8 port,
1672                                      u32 *resp_len)
1673 {
1674         u32 n_blocks = OPA_AM_NPORT(am);
1675         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1676         struct hfi1_pportdata *ppd;
1677         void *vp = (void *)data;
1678         int size;
1679
1680         if (n_blocks != 1) {
1681                 smp->status |= IB_SMP_INVALID_FIELD;
1682                 return reply((struct ib_mad_hdr *)smp);
1683         }
1684
1685         ppd = dd->pport + (port - 1);
1686
1687         size = fm_get_table(ppd, FM_TBL_SC2VLNT, vp);
1688
1689         if (resp_len)
1690                 *resp_len += size;
1691
1692         return reply((struct ib_mad_hdr *)smp);
1693 }
1694
1695 static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1696                                      struct ib_device *ibdev, u8 port,
1697                                      u32 *resp_len)
1698 {
1699         u32 n_blocks = OPA_AM_NPORT(am);
1700         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1701         struct hfi1_pportdata *ppd;
1702         void *vp = (void *)data;
1703         int lstate;
1704
1705         if (n_blocks != 1) {
1706                 smp->status |= IB_SMP_INVALID_FIELD;
1707                 return reply((struct ib_mad_hdr *)smp);
1708         }
1709
1710         /* IB numbers ports from 1, hw from 0 */
1711         ppd = dd->pport + (port - 1);
1712         lstate = driver_lstate(ppd);
1713         if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) {
1714                 smp->status |= IB_SMP_INVALID_FIELD;
1715                 return reply((struct ib_mad_hdr *)smp);
1716         }
1717
1718         ppd = dd->pport + (port - 1);
1719
1720         fm_set_table(ppd, FM_TBL_SC2VLNT, vp);
1721
1722         return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
1723                                          resp_len);
1724 }
1725
1726 static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1727                               struct ib_device *ibdev, u8 port,
1728                               u32 *resp_len)
1729 {
1730         u32 nports = OPA_AM_NPORT(am);
1731         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1732         u32 lstate;
1733         struct hfi1_ibport *ibp;
1734         struct hfi1_pportdata *ppd;
1735         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
1736
1737         if (nports != 1) {
1738                 smp->status |= IB_SMP_INVALID_FIELD;
1739                 return reply((struct ib_mad_hdr *)smp);
1740         }
1741
1742         ibp = to_iport(ibdev, port);
1743         ppd = ppd_from_ibp(ibp);
1744
1745         lstate = driver_lstate(ppd);
1746
1747         if (start_of_sm_config && (lstate == IB_PORT_INIT))
1748                 ppd->is_sm_config_started = 1;
1749
1750 #if PI_LED_ENABLE_SUP
1751         psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
1752         psi->port_states.ledenable_offlinereason |=
1753                 ppd->is_sm_config_started << 5;
1754         psi->port_states.ledenable_offlinereason |=
1755                 ppd->offline_disabled_reason;
1756 #else
1757         psi->port_states.offline_reason = ppd->neighbor_normal << 4;
1758         psi->port_states.offline_reason |= ppd->is_sm_config_started << 5;
1759         psi->port_states.offline_reason |= ppd->offline_disabled_reason;
1760 #endif /* PI_LED_ENABLE_SUP */
1761
1762         psi->port_states.portphysstate_portstate =
1763                 (hfi1_ibphys_portstate(ppd) << 4) | (lstate & 0xf);
1764         psi->link_width_downgrade_tx_active =
1765                 cpu_to_be16(ppd->link_width_downgrade_tx_active);
1766         psi->link_width_downgrade_rx_active =
1767                 cpu_to_be16(ppd->link_width_downgrade_rx_active);
1768         if (resp_len)
1769                 *resp_len += sizeof(struct opa_port_state_info);
1770
1771         return reply((struct ib_mad_hdr *)smp);
1772 }
1773
1774 static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1775                               struct ib_device *ibdev, u8 port,
1776                               u32 *resp_len)
1777 {
1778         u32 nports = OPA_AM_NPORT(am);
1779         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1780         u32 ls_old;
1781         u8 ls_new, ps_new;
1782         struct hfi1_ibport *ibp;
1783         struct hfi1_pportdata *ppd;
1784         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
1785         int ret, invalid = 0;
1786
1787         if (nports != 1) {
1788                 smp->status |= IB_SMP_INVALID_FIELD;
1789                 return reply((struct ib_mad_hdr *)smp);
1790         }
1791
1792         ibp = to_iport(ibdev, port);
1793         ppd = ppd_from_ibp(ibp);
1794
1795         ls_old = driver_lstate(ppd);
1796
1797         ls_new = port_states_to_logical_state(&psi->port_states);
1798         ps_new = port_states_to_phys_state(&psi->port_states);
1799
1800         if (ls_old == IB_PORT_INIT) {
1801                 if (start_of_sm_config) {
1802                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1803                                 ppd->is_sm_config_started = 1;
1804                 } else if (ls_new == IB_PORT_ARMED) {
1805                         if (ppd->is_sm_config_started == 0)
1806                                 invalid = 1;
1807                 }
1808         }
1809
1810         ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1811         if (ret)
1812                 return ret;
1813
1814         if (invalid)
1815                 smp->status |= IB_SMP_INVALID_FIELD;
1816
1817         return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len);
1818 }
1819
1820 static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data,
1821                                      struct ib_device *ibdev, u8 port,
1822                                      u32 *resp_len)
1823 {
1824         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1825         u32 addr = OPA_AM_CI_ADDR(am);
1826         u32 len = OPA_AM_CI_LEN(am) + 1;
1827         int ret;
1828
1829 #define __CI_PAGE_SIZE BIT(7) /* 128 bytes */
1830 #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1)
1831 #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK)
1832
1833         /*
1834          * check that addr is within spec, and
1835          * addr and (addr + len - 1) are on the same "page"
1836          */
1837         if (addr >= 4096 ||
1838             (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) {
1839                 smp->status |= IB_SMP_INVALID_FIELD;
1840                 return reply((struct ib_mad_hdr *)smp);
1841         }
1842
1843         ret = get_cable_info(dd, port, addr, len, data);
1844
1845         if (ret == -ENODEV) {
1846                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1847                 return reply((struct ib_mad_hdr *)smp);
1848         }
1849
1850         /* The address range for the CableInfo SMA query is wider than the
1851          * memory available on the QSFP cable. We want to return a valid
1852          * response, albeit zeroed out, for address ranges beyond available
1853          * memory but that are within the CableInfo query spec
1854          */
1855         if (ret < 0 && ret != -ERANGE) {
1856                 smp->status |= IB_SMP_INVALID_FIELD;
1857                 return reply((struct ib_mad_hdr *)smp);
1858         }
1859
1860         if (resp_len)
1861                 *resp_len += len;
1862
1863         return reply((struct ib_mad_hdr *)smp);
1864 }
1865
1866 static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1867                               struct ib_device *ibdev, u8 port, u32 *resp_len)
1868 {
1869         u32 num_ports = OPA_AM_NPORT(am);
1870         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1871         struct hfi1_pportdata *ppd;
1872         struct buffer_control *p = (struct buffer_control *)data;
1873         int size;
1874
1875         if (num_ports != 1) {
1876                 smp->status |= IB_SMP_INVALID_FIELD;
1877                 return reply((struct ib_mad_hdr *)smp);
1878         }
1879
1880         ppd = dd->pport + (port - 1);
1881         size = fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p);
1882         trace_bct_get(dd, p);
1883         if (resp_len)
1884                 *resp_len += size;
1885
1886         return reply((struct ib_mad_hdr *)smp);
1887 }
1888
1889 static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1890                               struct ib_device *ibdev, u8 port, u32 *resp_len)
1891 {
1892         u32 num_ports = OPA_AM_NPORT(am);
1893         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1894         struct hfi1_pportdata *ppd;
1895         struct buffer_control *p = (struct buffer_control *)data;
1896
1897         if (num_ports != 1) {
1898                 smp->status |= IB_SMP_INVALID_FIELD;
1899                 return reply((struct ib_mad_hdr *)smp);
1900         }
1901         ppd = dd->pport + (port - 1);
1902         trace_bct_set(dd, p);
1903         if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) {
1904                 smp->status |= IB_SMP_INVALID_FIELD;
1905                 return reply((struct ib_mad_hdr *)smp);
1906         }
1907
1908         return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len);
1909 }
1910
1911 static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1912                                  struct ib_device *ibdev, u8 port,
1913                                  u32 *resp_len)
1914 {
1915         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1916         u32 num_ports = OPA_AM_NPORT(am);
1917         u8 section = (am & 0x00ff0000) >> 16;
1918         u8 *p = data;
1919         int size = 0;
1920
1921         if (num_ports != 1) {
1922                 smp->status |= IB_SMP_INVALID_FIELD;
1923                 return reply((struct ib_mad_hdr *)smp);
1924         }
1925
1926         switch (section) {
1927         case OPA_VLARB_LOW_ELEMENTS:
1928                 size = fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p);
1929                 break;
1930         case OPA_VLARB_HIGH_ELEMENTS:
1931                 size = fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1932                 break;
1933         case OPA_VLARB_PREEMPT_ELEMENTS:
1934                 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p);
1935                 break;
1936         case OPA_VLARB_PREEMPT_MATRIX:
1937                 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p);
1938                 break;
1939         default:
1940                 pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n",
1941                         be32_to_cpu(smp->attr_mod));
1942                 smp->status |= IB_SMP_INVALID_FIELD;
1943                 break;
1944         }
1945
1946         if (size > 0 && resp_len)
1947                 *resp_len += size;
1948
1949         return reply((struct ib_mad_hdr *)smp);
1950 }
1951
1952 static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1953                                  struct ib_device *ibdev, u8 port,
1954                                  u32 *resp_len)
1955 {
1956         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1957         u32 num_ports = OPA_AM_NPORT(am);
1958         u8 section = (am & 0x00ff0000) >> 16;
1959         u8 *p = data;
1960
1961         if (num_ports != 1) {
1962                 smp->status |= IB_SMP_INVALID_FIELD;
1963                 return reply((struct ib_mad_hdr *)smp);
1964         }
1965
1966         switch (section) {
1967         case OPA_VLARB_LOW_ELEMENTS:
1968                 (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
1969                 break;
1970         case OPA_VLARB_HIGH_ELEMENTS:
1971                 (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1972                 break;
1973         /*
1974          * neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX
1975          * can be changed from the default values
1976          */
1977         case OPA_VLARB_PREEMPT_ELEMENTS:
1978                 /* FALLTHROUGH */
1979         case OPA_VLARB_PREEMPT_MATRIX:
1980                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1981                 break;
1982         default:
1983                 pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n",
1984                         be32_to_cpu(smp->attr_mod));
1985                 smp->status |= IB_SMP_INVALID_FIELD;
1986                 break;
1987         }
1988
1989         return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len);
1990 }
1991
1992 struct opa_pma_mad {
1993         struct ib_mad_hdr mad_hdr;
1994         u8 data[2024];
1995 } __packed;
1996
1997 struct opa_class_port_info {
1998         u8 base_version;
1999         u8 class_version;
2000         __be16 cap_mask;
2001         __be32 cap_mask2_resp_time;
2002
2003         u8 redirect_gid[16];
2004         __be32 redirect_tc_fl;
2005         __be32 redirect_lid;
2006         __be32 redirect_sl_qp;
2007         __be32 redirect_qkey;
2008
2009         u8 trap_gid[16];
2010         __be32 trap_tc_fl;
2011         __be32 trap_lid;
2012         __be32 trap_hl_qp;
2013         __be32 trap_qkey;
2014
2015         __be16 trap_pkey;
2016         __be16 redirect_pkey;
2017
2018         u8 trap_sl_rsvd;
2019         u8 reserved[3];
2020 } __packed;
2021
2022 struct opa_port_status_req {
2023         __u8 port_num;
2024         __u8 reserved[3];
2025         __be32 vl_select_mask;
2026 };
2027
2028 #define VL_MASK_ALL             0x000080ff
2029
2030 struct opa_port_status_rsp {
2031         __u8 port_num;
2032         __u8 reserved[3];
2033         __be32  vl_select_mask;
2034
2035         /* Data counters */
2036         __be64 port_xmit_data;
2037         __be64 port_rcv_data;
2038         __be64 port_xmit_pkts;
2039         __be64 port_rcv_pkts;
2040         __be64 port_multicast_xmit_pkts;
2041         __be64 port_multicast_rcv_pkts;
2042         __be64 port_xmit_wait;
2043         __be64 sw_port_congestion;
2044         __be64 port_rcv_fecn;
2045         __be64 port_rcv_becn;
2046         __be64 port_xmit_time_cong;
2047         __be64 port_xmit_wasted_bw;
2048         __be64 port_xmit_wait_data;
2049         __be64 port_rcv_bubble;
2050         __be64 port_mark_fecn;
2051         /* Error counters */
2052         __be64 port_rcv_constraint_errors;
2053         __be64 port_rcv_switch_relay_errors;
2054         __be64 port_xmit_discards;
2055         __be64 port_xmit_constraint_errors;
2056         __be64 port_rcv_remote_physical_errors;
2057         __be64 local_link_integrity_errors;
2058         __be64 port_rcv_errors;
2059         __be64 excessive_buffer_overruns;
2060         __be64 fm_config_errors;
2061         __be32 link_error_recovery;
2062         __be32 link_downed;
2063         u8 uncorrectable_errors;
2064
2065         u8 link_quality_indicator; /* 5res, 3bit */
2066         u8 res2[6];
2067         struct _vls_pctrs {
2068                 /* per-VL Data counters */
2069                 __be64 port_vl_xmit_data;
2070                 __be64 port_vl_rcv_data;
2071                 __be64 port_vl_xmit_pkts;
2072                 __be64 port_vl_rcv_pkts;
2073                 __be64 port_vl_xmit_wait;
2074                 __be64 sw_port_vl_congestion;
2075                 __be64 port_vl_rcv_fecn;
2076                 __be64 port_vl_rcv_becn;
2077                 __be64 port_xmit_time_cong;
2078                 __be64 port_vl_xmit_wasted_bw;
2079                 __be64 port_vl_xmit_wait_data;
2080                 __be64 port_vl_rcv_bubble;
2081                 __be64 port_vl_mark_fecn;
2082                 __be64 port_vl_xmit_discards;
2083         } vls[0]; /* real array size defined by # bits set in vl_select_mask */
2084 };
2085
2086 enum counter_selects {
2087         CS_PORT_XMIT_DATA                       = (1 << 31),
2088         CS_PORT_RCV_DATA                        = (1 << 30),
2089         CS_PORT_XMIT_PKTS                       = (1 << 29),
2090         CS_PORT_RCV_PKTS                        = (1 << 28),
2091         CS_PORT_MCAST_XMIT_PKTS                 = (1 << 27),
2092         CS_PORT_MCAST_RCV_PKTS                  = (1 << 26),
2093         CS_PORT_XMIT_WAIT                       = (1 << 25),
2094         CS_SW_PORT_CONGESTION                   = (1 << 24),
2095         CS_PORT_RCV_FECN                        = (1 << 23),
2096         CS_PORT_RCV_BECN                        = (1 << 22),
2097         CS_PORT_XMIT_TIME_CONG                  = (1 << 21),
2098         CS_PORT_XMIT_WASTED_BW                  = (1 << 20),
2099         CS_PORT_XMIT_WAIT_DATA                  = (1 << 19),
2100         CS_PORT_RCV_BUBBLE                      = (1 << 18),
2101         CS_PORT_MARK_FECN                       = (1 << 17),
2102         CS_PORT_RCV_CONSTRAINT_ERRORS           = (1 << 16),
2103         CS_PORT_RCV_SWITCH_RELAY_ERRORS         = (1 << 15),
2104         CS_PORT_XMIT_DISCARDS                   = (1 << 14),
2105         CS_PORT_XMIT_CONSTRAINT_ERRORS          = (1 << 13),
2106         CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS      = (1 << 12),
2107         CS_LOCAL_LINK_INTEGRITY_ERRORS          = (1 << 11),
2108         CS_PORT_RCV_ERRORS                      = (1 << 10),
2109         CS_EXCESSIVE_BUFFER_OVERRUNS            = (1 << 9),
2110         CS_FM_CONFIG_ERRORS                     = (1 << 8),
2111         CS_LINK_ERROR_RECOVERY                  = (1 << 7),
2112         CS_LINK_DOWNED                          = (1 << 6),
2113         CS_UNCORRECTABLE_ERRORS                 = (1 << 5),
2114 };
2115
2116 struct opa_clear_port_status {
2117         __be64 port_select_mask[4];
2118         __be32 counter_select_mask;
2119 };
2120
2121 struct opa_aggregate {
2122         __be16 attr_id;
2123         __be16 err_reqlength;   /* 1 bit, 8 res, 7 bit */
2124         __be32 attr_mod;
2125         u8 data[0];
2126 };
2127
2128 #define MSK_LLI 0x000000f0
2129 #define MSK_LLI_SFT 4
2130 #define MSK_LER 0x0000000f
2131 #define MSK_LER_SFT 0
2132 #define ADD_LLI 8
2133 #define ADD_LER 2
2134
2135 /* Request contains first three fields, response contains those plus the rest */
2136 struct opa_port_data_counters_msg {
2137         __be64 port_select_mask[4];
2138         __be32 vl_select_mask;
2139         __be32 resolution;
2140
2141         /* Response fields follow */
2142         struct _port_dctrs {
2143                 u8 port_number;
2144                 u8 reserved2[3];
2145                 __be32 link_quality_indicator; /* 29res, 3bit */
2146
2147                 /* Data counters */
2148                 __be64 port_xmit_data;
2149                 __be64 port_rcv_data;
2150                 __be64 port_xmit_pkts;
2151                 __be64 port_rcv_pkts;
2152                 __be64 port_multicast_xmit_pkts;
2153                 __be64 port_multicast_rcv_pkts;
2154                 __be64 port_xmit_wait;
2155                 __be64 sw_port_congestion;
2156                 __be64 port_rcv_fecn;
2157                 __be64 port_rcv_becn;
2158                 __be64 port_xmit_time_cong;
2159                 __be64 port_xmit_wasted_bw;
2160                 __be64 port_xmit_wait_data;
2161                 __be64 port_rcv_bubble;
2162                 __be64 port_mark_fecn;
2163
2164                 __be64 port_error_counter_summary;
2165                 /* Sum of error counts/port */
2166
2167                 struct _vls_dctrs {
2168                         /* per-VL Data counters */
2169                         __be64 port_vl_xmit_data;
2170                         __be64 port_vl_rcv_data;
2171                         __be64 port_vl_xmit_pkts;
2172                         __be64 port_vl_rcv_pkts;
2173                         __be64 port_vl_xmit_wait;
2174                         __be64 sw_port_vl_congestion;
2175                         __be64 port_vl_rcv_fecn;
2176                         __be64 port_vl_rcv_becn;
2177                         __be64 port_xmit_time_cong;
2178                         __be64 port_vl_xmit_wasted_bw;
2179                         __be64 port_vl_xmit_wait_data;
2180                         __be64 port_vl_rcv_bubble;
2181                         __be64 port_vl_mark_fecn;
2182                 } vls[0];
2183                 /* array size defined by #bits set in vl_select_mask*/
2184         } port[1]; /* array size defined by  #ports in attribute modifier */
2185 };
2186
2187 struct opa_port_error_counters64_msg {
2188         /*
2189          * Request contains first two fields, response contains the
2190          * whole magilla
2191          */
2192         __be64 port_select_mask[4];
2193         __be32 vl_select_mask;
2194
2195         /* Response-only fields follow */
2196         __be32 reserved1;
2197         struct _port_ectrs {
2198                 u8 port_number;
2199                 u8 reserved2[7];
2200                 __be64 port_rcv_constraint_errors;
2201                 __be64 port_rcv_switch_relay_errors;
2202                 __be64 port_xmit_discards;
2203                 __be64 port_xmit_constraint_errors;
2204                 __be64 port_rcv_remote_physical_errors;
2205                 __be64 local_link_integrity_errors;
2206                 __be64 port_rcv_errors;
2207                 __be64 excessive_buffer_overruns;
2208                 __be64 fm_config_errors;
2209                 __be32 link_error_recovery;
2210                 __be32 link_downed;
2211                 u8 uncorrectable_errors;
2212                 u8 reserved3[7];
2213                 struct _vls_ectrs {
2214                         __be64 port_vl_xmit_discards;
2215                 } vls[0];
2216                 /* array size defined by #bits set in vl_select_mask */
2217         } port[1]; /* array size defined by #ports in attribute modifier */
2218 };
2219
2220 struct opa_port_error_info_msg {
2221         __be64 port_select_mask[4];
2222         __be32 error_info_select_mask;
2223         __be32 reserved1;
2224         struct _port_ei {
2225                 u8 port_number;
2226                 u8 reserved2[7];
2227
2228                 /* PortRcvErrorInfo */
2229                 struct {
2230                         u8 status_and_code;
2231                         union {
2232                                 u8 raw[17];
2233                                 struct {
2234                                         /* EI1to12 format */
2235                                         u8 packet_flit1[8];
2236                                         u8 packet_flit2[8];
2237                                         u8 remaining_flit_bits12;
2238                                 } ei1to12;
2239                                 struct {
2240                                         u8 packet_bytes[8];
2241                                         u8 remaining_flit_bits;
2242                                 } ei13;
2243                         } ei;
2244                         u8 reserved3[6];
2245                 } __packed port_rcv_ei;
2246
2247                 /* ExcessiveBufferOverrunInfo */
2248                 struct {
2249                         u8 status_and_sc;
2250                         u8 reserved4[7];
2251                 } __packed excessive_buffer_overrun_ei;
2252
2253                 /* PortXmitConstraintErrorInfo */
2254                 struct {
2255                         u8 status;
2256                         u8 reserved5;
2257                         __be16 pkey;
2258                         __be32 slid;
2259                 } __packed port_xmit_constraint_ei;
2260
2261                 /* PortRcvConstraintErrorInfo */
2262                 struct {
2263                         u8 status;
2264                         u8 reserved6;
2265                         __be16 pkey;
2266                         __be32 slid;
2267                 } __packed port_rcv_constraint_ei;
2268
2269                 /* PortRcvSwitchRelayErrorInfo */
2270                 struct {
2271                         u8 status_and_code;
2272                         u8 reserved7[3];
2273                         __u32 error_info;
2274                 } __packed port_rcv_switch_relay_ei;
2275
2276                 /* UncorrectableErrorInfo */
2277                 struct {
2278                         u8 status_and_code;
2279                         u8 reserved8;
2280                 } __packed uncorrectable_ei;
2281
2282                 /* FMConfigErrorInfo */
2283                 struct {
2284                         u8 status_and_code;
2285                         u8 error_info;
2286                 } __packed fm_config_ei;
2287                 __u32 reserved9;
2288         } port[1]; /* actual array size defined by #ports in attr modifier */
2289 };
2290
2291 /* opa_port_error_info_msg error_info_select_mask bit definitions */
2292 enum error_info_selects {
2293         ES_PORT_RCV_ERROR_INFO                  = (1 << 31),
2294         ES_EXCESSIVE_BUFFER_OVERRUN_INFO        = (1 << 30),
2295         ES_PORT_XMIT_CONSTRAINT_ERROR_INFO      = (1 << 29),
2296         ES_PORT_RCV_CONSTRAINT_ERROR_INFO       = (1 << 28),
2297         ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO     = (1 << 27),
2298         ES_UNCORRECTABLE_ERROR_INFO             = (1 << 26),
2299         ES_FM_CONFIG_ERROR_INFO                 = (1 << 25)
2300 };
2301
2302 static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp,
2303                                      struct ib_device *ibdev, u32 *resp_len)
2304 {
2305         struct opa_class_port_info *p =
2306                 (struct opa_class_port_info *)pmp->data;
2307
2308         memset(pmp->data, 0, sizeof(pmp->data));
2309
2310         if (pmp->mad_hdr.attr_mod != 0)
2311                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2312
2313         p->base_version = OPA_MGMT_BASE_VERSION;
2314         p->class_version = OPA_SMI_CLASS_VERSION;
2315         /*
2316          * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2317          */
2318         p->cap_mask2_resp_time = cpu_to_be32(18);
2319
2320         if (resp_len)
2321                 *resp_len += sizeof(*p);
2322
2323         return reply((struct ib_mad_hdr *)pmp);
2324 }
2325
2326 static void a0_portstatus(struct hfi1_pportdata *ppd,
2327                           struct opa_port_status_rsp *rsp, u32 vl_select_mask)
2328 {
2329         if (!is_bx(ppd->dd)) {
2330                 unsigned long vl;
2331                 u64 sum_vl_xmit_wait = 0;
2332                 u32 vl_all_mask = VL_MASK_ALL;
2333
2334                 for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
2335                                  8 * sizeof(vl_all_mask)) {
2336                         u64 tmp = sum_vl_xmit_wait +
2337                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2338                                                  idx_from_vl(vl));
2339                         if (tmp < sum_vl_xmit_wait) {
2340                                 /* we wrapped */
2341                                 sum_vl_xmit_wait = (u64)~0;
2342                                 break;
2343                         }
2344                         sum_vl_xmit_wait = tmp;
2345                 }
2346                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2347                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2348         }
2349 }
2350
2351 static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
2352                                   struct ib_device *ibdev,
2353                                   u8 port, u32 *resp_len)
2354 {
2355         struct opa_port_status_req *req =
2356                 (struct opa_port_status_req *)pmp->data;
2357         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2358         struct opa_port_status_rsp *rsp;
2359         u32 vl_select_mask = be32_to_cpu(req->vl_select_mask);
2360         unsigned long vl;
2361         size_t response_data_size;
2362         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2363         u8 port_num = req->port_num;
2364         u8 num_vls = hweight32(vl_select_mask);
2365         struct _vls_pctrs *vlinfo;
2366         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2367         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2368         int vfi;
2369         u64 tmp, tmp2;
2370
2371         response_data_size = sizeof(struct opa_port_status_rsp) +
2372                                 num_vls * sizeof(struct _vls_pctrs);
2373         if (response_data_size > sizeof(pmp->data)) {
2374                 pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE;
2375                 return reply((struct ib_mad_hdr *)pmp);
2376         }
2377
2378         if (nports != 1 || (port_num && port_num != port) ||
2379             num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) {
2380                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2381                 return reply((struct ib_mad_hdr *)pmp);
2382         }
2383
2384         memset(pmp->data, 0, sizeof(pmp->data));
2385
2386         rsp = (struct opa_port_status_rsp *)pmp->data;
2387         if (port_num)
2388                 rsp->port_num = port_num;
2389         else
2390                 rsp->port_num = port;
2391
2392         rsp->port_rcv_constraint_errors =
2393                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2394                                            CNTR_INVALID_VL));
2395
2396         hfi1_read_link_quality(dd, &rsp->link_quality_indicator);
2397
2398         rsp->vl_select_mask = cpu_to_be32(vl_select_mask);
2399         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2400                                           CNTR_INVALID_VL));
2401         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2402                                          CNTR_INVALID_VL));
2403         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2404                                           CNTR_INVALID_VL));
2405         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2406                                          CNTR_INVALID_VL));
2407         rsp->port_multicast_xmit_pkts =
2408                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2409                                           CNTR_INVALID_VL));
2410         rsp->port_multicast_rcv_pkts =
2411                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2412                                           CNTR_INVALID_VL));
2413         rsp->port_xmit_wait =
2414                 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2415         rsp->port_rcv_fecn =
2416                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2417         rsp->port_rcv_becn =
2418                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2419         rsp->port_xmit_discards =
2420                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2421                                            CNTR_INVALID_VL));
2422         rsp->port_xmit_constraint_errors =
2423                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2424                                            CNTR_INVALID_VL));
2425         rsp->port_rcv_remote_physical_errors =
2426                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2427                                           CNTR_INVALID_VL));
2428         tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2429         tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2430         if (tmp2 < tmp) {
2431                 /* overflow/wrapped */
2432                 rsp->local_link_integrity_errors = cpu_to_be64(~0);
2433         } else {
2434                 rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
2435         }
2436         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2437         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2438                                    CNTR_INVALID_VL);
2439         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2440                 /* overflow/wrapped */
2441                 rsp->link_error_recovery = cpu_to_be32(~0);
2442         } else {
2443                 rsp->link_error_recovery = cpu_to_be32(tmp2);
2444         }
2445         rsp->port_rcv_errors =
2446                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2447         rsp->excessive_buffer_overruns =
2448                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2449         rsp->fm_config_errors =
2450                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2451                                           CNTR_INVALID_VL));
2452         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2453                                                       CNTR_INVALID_VL));
2454
2455         /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */
2456         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2457         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2458
2459         vlinfo = &rsp->vls[0];
2460         vfi = 0;
2461         /* The vl_select_mask has been checked above, and we know
2462          * that it contains only entries which represent valid VLs.
2463          * So in the for_each_set_bit() loop below, we don't need
2464          * any additional checks for vl.
2465          */
2466         for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2467                          8 * sizeof(vl_select_mask)) {
2468                 memset(vlinfo, 0, sizeof(*vlinfo));
2469
2470                 tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
2471                 rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
2472
2473                 rsp->vls[vfi].port_vl_rcv_pkts =
2474                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2475                                                   idx_from_vl(vl)));
2476
2477                 rsp->vls[vfi].port_vl_xmit_data =
2478                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2479                                                    idx_from_vl(vl)));
2480
2481                 rsp->vls[vfi].port_vl_xmit_pkts =
2482                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2483                                                    idx_from_vl(vl)));
2484
2485                 rsp->vls[vfi].port_vl_xmit_wait =
2486                         cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2487                                                    idx_from_vl(vl)));
2488
2489                 rsp->vls[vfi].port_vl_rcv_fecn =
2490                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2491                                                   idx_from_vl(vl)));
2492
2493                 rsp->vls[vfi].port_vl_rcv_becn =
2494                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2495                                                   idx_from_vl(vl)));
2496
2497                 vlinfo++;
2498                 vfi++;
2499         }
2500
2501         a0_portstatus(ppd, rsp, vl_select_mask);
2502
2503         if (resp_len)
2504                 *resp_len += response_data_size;
2505
2506         return reply((struct ib_mad_hdr *)pmp);
2507 }
2508
2509 static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port,
2510                                      u8 res_lli, u8 res_ler)
2511 {
2512         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2513         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2514         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2515         u64 error_counter_summary = 0, tmp;
2516
2517         error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2518                                                 CNTR_INVALID_VL);
2519         /* port_rcv_switch_relay_errors is 0 for HFIs */
2520         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD,
2521                                                 CNTR_INVALID_VL);
2522         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2523                                                 CNTR_INVALID_VL);
2524         error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2525                                                CNTR_INVALID_VL);
2526         /* local link integrity must be right-shifted by the lli resolution */
2527         tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2528         tmp += read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2529         error_counter_summary += (tmp >> res_lli);
2530         /* link error recovery must b right-shifted by the ler resolution */
2531         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2532         tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
2533         error_counter_summary += (tmp >> res_ler);
2534         error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR,
2535                                                CNTR_INVALID_VL);
2536         error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL);
2537         error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2538                                                CNTR_INVALID_VL);
2539         /* ppd->link_downed is a 32-bit value */
2540         error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN,
2541                                                 CNTR_INVALID_VL);
2542         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2543         /* this is an 8-bit quantity */
2544         error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff;
2545
2546         return error_counter_summary;
2547 }
2548
2549 static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp,
2550                             u32 vl_select_mask)
2551 {
2552         if (!is_bx(ppd->dd)) {
2553                 unsigned long vl;
2554                 u64 sum_vl_xmit_wait = 0;
2555                 u32 vl_all_mask = VL_MASK_ALL;
2556
2557                 for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
2558                                  8 * sizeof(vl_all_mask)) {
2559                         u64 tmp = sum_vl_xmit_wait +
2560                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2561                                                  idx_from_vl(vl));
2562                         if (tmp < sum_vl_xmit_wait) {
2563                                 /* we wrapped */
2564                                 sum_vl_xmit_wait = (u64)~0;
2565                                 break;
2566                         }
2567                         sum_vl_xmit_wait = tmp;
2568                 }
2569                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2570                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2571         }
2572 }
2573
2574 static void pma_get_opa_port_dctrs(struct ib_device *ibdev,
2575                                    struct _port_dctrs *rsp)
2576 {
2577         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2578
2579         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2580                                                 CNTR_INVALID_VL));
2581         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2582                                                 CNTR_INVALID_VL));
2583         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2584                                                 CNTR_INVALID_VL));
2585         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2586                                                 CNTR_INVALID_VL));
2587         rsp->port_multicast_xmit_pkts =
2588                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2589                                           CNTR_INVALID_VL));
2590         rsp->port_multicast_rcv_pkts =
2591                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2592                                           CNTR_INVALID_VL));
2593 }
2594
2595 static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
2596                                     struct ib_device *ibdev,
2597                                     u8 port, u32 *resp_len)
2598 {
2599         struct opa_port_data_counters_msg *req =
2600                 (struct opa_port_data_counters_msg *)pmp->data;
2601         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2602         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2603         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2604         struct _port_dctrs *rsp;
2605         struct _vls_dctrs *vlinfo;
2606         size_t response_data_size;
2607         u32 num_ports;
2608         u8 num_pslm;
2609         u8 lq, num_vls;
2610         u8 res_lli, res_ler;
2611         u64 port_mask;
2612         unsigned long port_num;
2613         unsigned long vl;
2614         u32 vl_select_mask;
2615         int vfi;
2616
2617         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2618         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2619         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2620         vl_select_mask = be32_to_cpu(req->vl_select_mask);
2621         res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT;
2622         res_lli = res_lli ? res_lli + ADD_LLI : 0;
2623         res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT;
2624         res_ler = res_ler ? res_ler + ADD_LER : 0;
2625
2626         if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) {
2627                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2628                 return reply((struct ib_mad_hdr *)pmp);
2629         }
2630
2631         /* Sanity check */
2632         response_data_size = sizeof(struct opa_port_data_counters_msg) +
2633                                 num_vls * sizeof(struct _vls_dctrs);
2634
2635         if (response_data_size > sizeof(pmp->data)) {
2636                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2637                 return reply((struct ib_mad_hdr *)pmp);
2638         }
2639
2640         /*
2641          * The bit set in the mask needs to be consistent with the
2642          * port the request came in on.
2643          */
2644         port_mask = be64_to_cpu(req->port_select_mask[3]);
2645         port_num = find_first_bit((unsigned long *)&port_mask,
2646                                   sizeof(port_mask));
2647
2648         if ((u8)port_num != port) {
2649                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2650                 return reply((struct ib_mad_hdr *)pmp);
2651         }
2652
2653         rsp = &req->port[0];
2654         memset(rsp, 0, sizeof(*rsp));
2655
2656         rsp->port_number = port;
2657         /*
2658          * Note that link_quality_indicator is a 32 bit quantity in
2659          * 'datacounters' queries (as opposed to 'portinfo' queries,
2660          * where it's a byte).
2661          */
2662         hfi1_read_link_quality(dd, &lq);
2663         rsp->link_quality_indicator = cpu_to_be32((u32)lq);
2664         pma_get_opa_port_dctrs(ibdev, rsp);
2665
2666         rsp->port_xmit_wait =
2667                 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2668         rsp->port_rcv_fecn =
2669                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2670         rsp->port_rcv_becn =
2671                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2672         rsp->port_error_counter_summary =
2673                 cpu_to_be64(get_error_counter_summary(ibdev, port,
2674                                                       res_lli, res_ler));
2675
2676         vlinfo = &rsp->vls[0];
2677         vfi = 0;
2678         /* The vl_select_mask has been checked above, and we know
2679          * that it contains only entries which represent valid VLs.
2680          * So in the for_each_set_bit() loop below, we don't need
2681          * any additional checks for vl.
2682          */
2683         for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2684                          8 * sizeof(req->vl_select_mask)) {
2685                 memset(vlinfo, 0, sizeof(*vlinfo));
2686
2687                 rsp->vls[vfi].port_vl_xmit_data =
2688                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2689                                                    idx_from_vl(vl)));
2690
2691                 rsp->vls[vfi].port_vl_rcv_data =
2692                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
2693                                                   idx_from_vl(vl)));
2694
2695                 rsp->vls[vfi].port_vl_xmit_pkts =
2696                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2697                                                    idx_from_vl(vl)));
2698
2699                 rsp->vls[vfi].port_vl_rcv_pkts =
2700                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2701                                                   idx_from_vl(vl)));
2702
2703                 rsp->vls[vfi].port_vl_xmit_wait =
2704                         cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2705                                                    idx_from_vl(vl)));
2706
2707                 rsp->vls[vfi].port_vl_rcv_fecn =
2708                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2709                                                   idx_from_vl(vl)));
2710                 rsp->vls[vfi].port_vl_rcv_becn =
2711                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2712                                                   idx_from_vl(vl)));
2713
2714                 /* rsp->port_vl_xmit_time_cong is 0 for HFIs */
2715                 /* rsp->port_vl_xmit_wasted_bw ??? */
2716                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ???
2717                  * does this differ from rsp->vls[vfi].port_vl_xmit_wait
2718                  */
2719                 /*rsp->vls[vfi].port_vl_mark_fecn =
2720                  *      cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT
2721                  *              + offset));
2722                  */
2723                 vlinfo++;
2724                 vfi++;
2725         }
2726
2727         a0_datacounters(ppd, rsp, vl_select_mask);
2728
2729         if (resp_len)
2730                 *resp_len += response_data_size;
2731
2732         return reply((struct ib_mad_hdr *)pmp);
2733 }
2734
2735 static int pma_get_ib_portcounters_ext(struct ib_pma_mad *pmp,
2736                                        struct ib_device *ibdev, u8 port)
2737 {
2738         struct ib_pma_portcounters_ext *p = (struct ib_pma_portcounters_ext *)
2739                                                 pmp->data;
2740         struct _port_dctrs rsp;
2741
2742         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
2743                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2744                 goto bail;
2745         }
2746
2747         memset(&rsp, 0, sizeof(rsp));
2748         pma_get_opa_port_dctrs(ibdev, &rsp);
2749
2750         p->port_xmit_data = rsp.port_xmit_data;
2751         p->port_rcv_data = rsp.port_rcv_data;
2752         p->port_xmit_packets = rsp.port_xmit_pkts;
2753         p->port_rcv_packets = rsp.port_rcv_pkts;
2754         p->port_unicast_xmit_packets = 0;
2755         p->port_unicast_rcv_packets =  0;
2756         p->port_multicast_xmit_packets = rsp.port_multicast_xmit_pkts;
2757         p->port_multicast_rcv_packets = rsp.port_multicast_rcv_pkts;
2758
2759 bail:
2760         return reply((struct ib_mad_hdr *)pmp);
2761 }
2762
2763 static void pma_get_opa_port_ectrs(struct ib_device *ibdev,
2764                                    struct _port_ectrs *rsp, u8 port)
2765 {
2766         u64 tmp, tmp2;
2767         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2768         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2769         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2770
2771         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2772         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2773                                         CNTR_INVALID_VL);
2774         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2775                 /* overflow/wrapped */
2776                 rsp->link_error_recovery = cpu_to_be32(~0);
2777         } else {
2778                 rsp->link_error_recovery = cpu_to_be32(tmp2);
2779         }
2780
2781         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2782                                                 CNTR_INVALID_VL));
2783         rsp->port_rcv_errors =
2784                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2785         rsp->port_rcv_remote_physical_errors =
2786                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2787                                           CNTR_INVALID_VL));
2788         rsp->port_rcv_switch_relay_errors = 0;
2789         rsp->port_xmit_discards =
2790                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2791                                            CNTR_INVALID_VL));
2792         rsp->port_xmit_constraint_errors =
2793                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2794                                            CNTR_INVALID_VL));
2795         rsp->port_rcv_constraint_errors =
2796                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2797                                            CNTR_INVALID_VL));
2798         tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL);
2799         tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL);
2800         if (tmp2 < tmp) {
2801                 /* overflow/wrapped */
2802                 rsp->local_link_integrity_errors = cpu_to_be64(~0);
2803         } else {
2804                 rsp->local_link_integrity_errors = cpu_to_be64(tmp2);
2805         }
2806         rsp->excessive_buffer_overruns =
2807                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2808 }
2809
2810 static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
2811                                   struct ib_device *ibdev,
2812                                   u8 port, u32 *resp_len)
2813 {
2814         size_t response_data_size;
2815         struct _port_ectrs *rsp;
2816         u8 port_num;
2817         struct opa_port_error_counters64_msg *req;
2818         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2819         u32 num_ports;
2820         u8 num_pslm;
2821         u8 num_vls;
2822         struct hfi1_ibport *ibp;
2823         struct hfi1_pportdata *ppd;
2824         struct _vls_ectrs *vlinfo;
2825         unsigned long vl;
2826         u64 port_mask, tmp;
2827         u32 vl_select_mask;
2828         int vfi;
2829
2830         req = (struct opa_port_error_counters64_msg *)pmp->data;
2831
2832         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2833
2834         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2835         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2836
2837         if (num_ports != 1 || num_ports != num_pslm) {
2838                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2839                 return reply((struct ib_mad_hdr *)pmp);
2840         }
2841
2842         response_data_size = sizeof(struct opa_port_error_counters64_msg) +
2843                                 num_vls * sizeof(struct _vls_ectrs);
2844
2845         if (response_data_size > sizeof(pmp->data)) {
2846                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2847                 return reply((struct ib_mad_hdr *)pmp);
2848         }
2849         /*
2850          * The bit set in the mask needs to be consistent with the
2851          * port the request came in on.
2852          */
2853         port_mask = be64_to_cpu(req->port_select_mask[3]);
2854         port_num = find_first_bit((unsigned long *)&port_mask,
2855                                   sizeof(port_mask));
2856
2857         if (port_num != port) {
2858                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2859                 return reply((struct ib_mad_hdr *)pmp);
2860         }
2861
2862         rsp = &req->port[0];
2863
2864         ibp = to_iport(ibdev, port_num);
2865         ppd = ppd_from_ibp(ibp);
2866
2867         memset(rsp, 0, sizeof(*rsp));
2868         rsp->port_number = port_num;
2869
2870         pma_get_opa_port_ectrs(ibdev, rsp, port_num);
2871
2872         rsp->port_rcv_remote_physical_errors =
2873                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2874                                           CNTR_INVALID_VL));
2875         rsp->fm_config_errors =
2876                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2877                                           CNTR_INVALID_VL));
2878         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2879
2880         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2881
2882         vlinfo = &rsp->vls[0];
2883         vfi = 0;
2884         vl_select_mask = be32_to_cpu(req->vl_select_mask);
2885         for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
2886                          8 * sizeof(req->vl_select_mask)) {
2887                 memset(vlinfo, 0, sizeof(*vlinfo));
2888                 /* vlinfo->vls[vfi].port_vl_xmit_discards ??? */
2889                 vlinfo += 1;
2890                 vfi++;
2891         }
2892
2893         if (resp_len)
2894                 *resp_len += response_data_size;
2895
2896         return reply((struct ib_mad_hdr *)pmp);
2897 }
2898
2899 static int pma_get_ib_portcounters(struct ib_pma_mad *pmp,
2900                                    struct ib_device *ibdev, u8 port)
2901 {
2902         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
2903                 pmp->data;
2904         struct _port_ectrs rsp;
2905         u64 temp_link_overrun_errors;
2906         u64 temp_64;
2907         u32 temp_32;
2908
2909         memset(&rsp, 0, sizeof(rsp));
2910         pma_get_opa_port_ectrs(ibdev, &rsp, port);
2911
2912         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
2913                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2914                 goto bail;
2915         }
2916
2917         p->symbol_error_counter = 0; /* N/A for OPA */
2918
2919         temp_32 = be32_to_cpu(rsp.link_error_recovery);
2920         if (temp_32 > 0xFFUL)
2921                 p->link_error_recovery_counter = 0xFF;
2922         else
2923                 p->link_error_recovery_counter = (u8)temp_32;
2924
2925         temp_32 = be32_to_cpu(rsp.link_downed);
2926         if (temp_32 > 0xFFUL)
2927                 p->link_downed_counter = 0xFF;
2928         else
2929                 p->link_downed_counter = (u8)temp_32;
2930
2931         temp_64 = be64_to_cpu(rsp.port_rcv_errors);
2932         if (temp_64 > 0xFFFFUL)
2933                 p->port_rcv_errors = cpu_to_be16(0xFFFF);
2934         else
2935                 p->port_rcv_errors = cpu_to_be16((u16)temp_64);
2936
2937         temp_64 = be64_to_cpu(rsp.port_rcv_remote_physical_errors);
2938         if (temp_64 > 0xFFFFUL)
2939                 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
2940         else
2941                 p->port_rcv_remphys_errors = cpu_to_be16((u16)temp_64);
2942
2943         temp_64 = be64_to_cpu(rsp.port_rcv_switch_relay_errors);
2944         p->port_rcv_switch_relay_errors = cpu_to_be16((u16)temp_64);
2945
2946         temp_64 = be64_to_cpu(rsp.port_xmit_discards);
2947         if (temp_64 > 0xFFFFUL)
2948                 p->port_xmit_discards = cpu_to_be16(0xFFFF);
2949         else
2950                 p->port_xmit_discards = cpu_to_be16((u16)temp_64);
2951
2952         temp_64 = be64_to_cpu(rsp.port_xmit_constraint_errors);
2953         if (temp_64 > 0xFFUL)
2954                 p->port_xmit_constraint_errors = 0xFF;
2955         else
2956                 p->port_xmit_constraint_errors = (u8)temp_64;
2957
2958         temp_64 = be64_to_cpu(rsp.port_rcv_constraint_errors);
2959         if (temp_64 > 0xFFUL)
2960                 p->port_rcv_constraint_errors = 0xFFUL;
2961         else
2962                 p->port_rcv_constraint_errors = (u8)temp_64;
2963
2964         /* LocalLink: 7:4, BufferOverrun: 3:0 */
2965         temp_64 = be64_to_cpu(rsp.local_link_integrity_errors);
2966         if (temp_64 > 0xFUL)
2967                 temp_64 = 0xFUL;
2968
2969         temp_link_overrun_errors = temp_64 << 4;
2970
2971         temp_64 = be64_to_cpu(rsp.excessive_buffer_overruns);
2972         if (temp_64 > 0xFUL)
2973                 temp_64 = 0xFUL;
2974         temp_link_overrun_errors |= temp_64;
2975
2976         p->link_overrun_errors = (u8)temp_link_overrun_errors;
2977
2978         p->vl15_dropped = 0; /* N/A for OPA */
2979
2980 bail:
2981         return reply((struct ib_mad_hdr *)pmp);
2982 }
2983
2984 static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp,
2985                                  struct ib_device *ibdev,
2986                                  u8 port, u32 *resp_len)
2987 {
2988         size_t response_data_size;
2989         struct _port_ei *rsp;
2990         struct opa_port_error_info_msg *req;
2991         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2992         u64 port_mask;
2993         u32 num_ports;
2994         u8 port_num;
2995         u8 num_pslm;
2996         u64 reg;
2997
2998         req = (struct opa_port_error_info_msg *)pmp->data;
2999         rsp = &req->port[0];
3000
3001         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3002         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3003
3004         memset(rsp, 0, sizeof(*rsp));
3005
3006         if (num_ports != 1 || num_ports != num_pslm) {
3007                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3008                 return reply((struct ib_mad_hdr *)pmp);
3009         }
3010
3011         /* Sanity check */
3012         response_data_size = sizeof(struct opa_port_error_info_msg);
3013
3014         if (response_data_size > sizeof(pmp->data)) {
3015                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3016                 return reply((struct ib_mad_hdr *)pmp);
3017         }
3018
3019         /*
3020          * The bit set in the mask needs to be consistent with the port
3021          * the request came in on.
3022          */
3023         port_mask = be64_to_cpu(req->port_select_mask[3]);
3024         port_num = find_first_bit((unsigned long *)&port_mask,
3025                                   sizeof(port_mask));
3026
3027         if (port_num != port) {
3028                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3029                 return reply((struct ib_mad_hdr *)pmp);
3030         }
3031
3032         /* PortRcvErrorInfo */
3033         rsp->port_rcv_ei.status_and_code =
3034                 dd->err_info_rcvport.status_and_code;
3035         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1,
3036                &dd->err_info_rcvport.packet_flit1, sizeof(u64));
3037         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2,
3038                &dd->err_info_rcvport.packet_flit2, sizeof(u64));
3039
3040         /* ExcessiverBufferOverrunInfo */
3041         reg = read_csr(dd, RCV_ERR_INFO);
3042         if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) {
3043                 /*
3044                  * if the RcvExcessBufferOverrun bit is set, save SC of
3045                  * first pkt that encountered an excess buffer overrun
3046                  */
3047                 u8 tmp = (u8)reg;
3048
3049                 tmp &=  RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK;
3050                 tmp <<= 2;
3051                 rsp->excessive_buffer_overrun_ei.status_and_sc = tmp;
3052                 /* set the status bit */
3053                 rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80;
3054         }
3055
3056         rsp->port_xmit_constraint_ei.status =
3057                 dd->err_info_xmit_constraint.status;
3058         rsp->port_xmit_constraint_ei.pkey =
3059                 cpu_to_be16(dd->err_info_xmit_constraint.pkey);
3060         rsp->port_xmit_constraint_ei.slid =
3061                 cpu_to_be32(dd->err_info_xmit_constraint.slid);
3062
3063         rsp->port_rcv_constraint_ei.status =
3064                 dd->err_info_rcv_constraint.status;
3065         rsp->port_rcv_constraint_ei.pkey =
3066                 cpu_to_be16(dd->err_info_rcv_constraint.pkey);
3067         rsp->port_rcv_constraint_ei.slid =
3068                 cpu_to_be32(dd->err_info_rcv_constraint.slid);
3069
3070         /* UncorrectableErrorInfo */
3071         rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable;
3072
3073         /* FMConfigErrorInfo */
3074         rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig;
3075
3076         if (resp_len)
3077                 *resp_len += response_data_size;
3078
3079         return reply((struct ib_mad_hdr *)pmp);
3080 }
3081
3082 static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
3083                                   struct ib_device *ibdev,
3084                                   u8 port, u32 *resp_len)
3085 {
3086         struct opa_clear_port_status *req =
3087                 (struct opa_clear_port_status *)pmp->data;
3088         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3089         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3090         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3091         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3092         u64 portn = be64_to_cpu(req->port_select_mask[3]);
3093         u32 counter_select = be32_to_cpu(req->counter_select_mask);
3094         u32 vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */
3095         unsigned long vl;
3096
3097         if ((nports != 1) || (portn != 1 << port)) {
3098                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3099                 return reply((struct ib_mad_hdr *)pmp);
3100         }
3101         /*
3102          * only counters returned by pma_get_opa_portstatus() are
3103          * handled, so when pma_get_opa_portstatus() gets a fix,
3104          * the corresponding change should be made here as well.
3105          */
3106
3107         if (counter_select & CS_PORT_XMIT_DATA)
3108                 write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0);
3109
3110         if (counter_select & CS_PORT_RCV_DATA)
3111                 write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0);
3112
3113         if (counter_select & CS_PORT_XMIT_PKTS)
3114                 write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3115
3116         if (counter_select & CS_PORT_RCV_PKTS)
3117                 write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0);
3118
3119         if (counter_select & CS_PORT_MCAST_XMIT_PKTS)
3120                 write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3121
3122         if (counter_select & CS_PORT_MCAST_RCV_PKTS)
3123                 write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
3124
3125         if (counter_select & CS_PORT_XMIT_WAIT)
3126                 write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
3127
3128         /* ignore cs_sw_portCongestion for HFIs */
3129
3130         if (counter_select & CS_PORT_RCV_FECN)
3131                 write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0);
3132
3133         if (counter_select & CS_PORT_RCV_BECN)
3134                 write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0);
3135
3136         /* ignore cs_port_xmit_time_cong for HFIs */
3137         /* ignore cs_port_xmit_wasted_bw for now */
3138         /* ignore cs_port_xmit_wait_data for now */
3139         if (counter_select & CS_PORT_RCV_BUBBLE)
3140                 write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0);
3141
3142         /* Only applicable for switch */
3143         /* if (counter_select & CS_PORT_MARK_FECN)
3144          *      write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);
3145          */
3146
3147         if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS)
3148                 write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0);
3149
3150         /* ignore cs_port_rcv_switch_relay_errors for HFIs */
3151         if (counter_select & CS_PORT_XMIT_DISCARDS)
3152                 write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0);
3153
3154         if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS)
3155                 write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0);
3156
3157         if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
3158                 write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
3159
3160         if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS) {
3161                 write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
3162                 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3163         }
3164
3165         if (counter_select & CS_LINK_ERROR_RECOVERY) {
3166                 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3167                 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3168                                CNTR_INVALID_VL, 0);
3169         }
3170
3171         if (counter_select & CS_PORT_RCV_ERRORS)
3172                 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3173
3174         if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) {
3175                 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3176                 dd->rcv_ovfl_cnt = 0;
3177         }
3178
3179         if (counter_select & CS_FM_CONFIG_ERRORS)
3180                 write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0);
3181
3182         if (counter_select & CS_LINK_DOWNED)
3183                 write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0);
3184
3185         if (counter_select & CS_UNCORRECTABLE_ERRORS)
3186                 write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0);
3187
3188         for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
3189                          8 * sizeof(vl_select_mask)) {
3190                 if (counter_select & CS_PORT_XMIT_DATA)
3191                         write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0);
3192
3193                 if (counter_select & CS_PORT_RCV_DATA)
3194                         write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0);
3195
3196                 if (counter_select & CS_PORT_XMIT_PKTS)
3197                         write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0);
3198
3199                 if (counter_select & CS_PORT_RCV_PKTS)
3200                         write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
3201
3202                 if (counter_select & CS_PORT_XMIT_WAIT)
3203                         write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
3204
3205                 /* sw_port_vl_congestion is 0 for HFIs */
3206                 if (counter_select & CS_PORT_RCV_FECN)
3207                         write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0);
3208
3209                 if (counter_select & CS_PORT_RCV_BECN)
3210                         write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0);
3211
3212                 /* port_vl_xmit_time_cong is 0 for HFIs */
3213                 /* port_vl_xmit_wasted_bw ??? */
3214                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */
3215                 if (counter_select & CS_PORT_RCV_BUBBLE)
3216                         write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0);
3217
3218                 /* if (counter_select & CS_PORT_MARK_FECN)
3219                  *     write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
3220                  */
3221                 /* port_vl_xmit_discards ??? */
3222         }
3223
3224         if (resp_len)
3225                 *resp_len += sizeof(*req);
3226
3227         return reply((struct ib_mad_hdr *)pmp);
3228 }
3229
3230 static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp,
3231                                  struct ib_device *ibdev,
3232                                  u8 port, u32 *resp_len)
3233 {
3234         struct _port_ei *rsp;
3235         struct opa_port_error_info_msg *req;
3236         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3237         u64 port_mask;
3238         u32 num_ports;
3239         u8 port_num;
3240         u8 num_pslm;
3241         u32 error_info_select;
3242
3243         req = (struct opa_port_error_info_msg *)pmp->data;
3244         rsp = &req->port[0];
3245
3246         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3247         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3248
3249         memset(rsp, 0, sizeof(*rsp));
3250
3251         if (num_ports != 1 || num_ports != num_pslm) {
3252                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3253                 return reply((struct ib_mad_hdr *)pmp);
3254         }
3255
3256         /*
3257          * The bit set in the mask needs to be consistent with the port
3258          * the request came in on.
3259          */
3260         port_mask = be64_to_cpu(req->port_select_mask[3]);
3261         port_num = find_first_bit((unsigned long *)&port_mask,
3262                                   sizeof(port_mask));
3263
3264         if (port_num != port) {
3265                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3266                 return reply((struct ib_mad_hdr *)pmp);
3267         }
3268
3269         error_info_select = be32_to_cpu(req->error_info_select_mask);
3270
3271         /* PortRcvErrorInfo */
3272         if (error_info_select & ES_PORT_RCV_ERROR_INFO)
3273                 /* turn off status bit */
3274                 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3275
3276         /* ExcessiverBufferOverrunInfo */
3277         if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO)
3278                 /*
3279                  * status bit is essentially kept in the h/w - bit 5 of
3280                  * RCV_ERR_INFO
3281                  */
3282                 write_csr(dd, RCV_ERR_INFO,
3283                           RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK);
3284
3285         if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO)
3286                 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3287
3288         if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO)
3289                 dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK;
3290
3291         /* UncorrectableErrorInfo */
3292         if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO)
3293                 /* turn off status bit */
3294                 dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK;
3295
3296         /* FMConfigErrorInfo */
3297         if (error_info_select & ES_FM_CONFIG_ERROR_INFO)
3298                 /* turn off status bit */
3299                 dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK;
3300
3301         if (resp_len)
3302                 *resp_len += sizeof(*req);
3303
3304         return reply((struct ib_mad_hdr *)pmp);
3305 }
3306
3307 struct opa_congestion_info_attr {
3308         __be16 congestion_info;
3309         u8 control_table_cap;   /* Multiple of 64 entry unit CCTs */
3310         u8 congestion_log_length;
3311 } __packed;
3312
3313 static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data,
3314                                     struct ib_device *ibdev, u8 port,
3315                                     u32 *resp_len)
3316 {
3317         struct opa_congestion_info_attr *p =
3318                 (struct opa_congestion_info_attr *)data;
3319         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3320         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3321
3322         p->congestion_info = 0;
3323         p->control_table_cap = ppd->cc_max_table_entries;
3324         p->congestion_log_length = OPA_CONG_LOG_ELEMS;
3325
3326         if (resp_len)
3327                 *resp_len += sizeof(*p);
3328
3329         return reply((struct ib_mad_hdr *)smp);
3330 }
3331
3332 static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am,
3333                                        u8 *data, struct ib_device *ibdev,
3334                                        u8 port, u32 *resp_len)
3335 {
3336         int i;
3337         struct opa_congestion_setting_attr *p =
3338                 (struct opa_congestion_setting_attr *)data;
3339         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3340         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3341         struct opa_congestion_setting_entry_shadow *entries;
3342         struct cc_state *cc_state;
3343
3344         rcu_read_lock();
3345
3346         cc_state = get_cc_state(ppd);
3347
3348         if (!cc_state) {
3349                 rcu_read_unlock();
3350                 return reply((struct ib_mad_hdr *)smp);
3351         }
3352
3353         entries = cc_state->cong_setting.entries;
3354         p->port_control = cpu_to_be16(cc_state->cong_setting.port_control);
3355         p->control_map = cpu_to_be32(cc_state->cong_setting.control_map);
3356         for (i = 0; i < OPA_MAX_SLS; i++) {
3357                 p->entries[i].ccti_increase = entries[i].ccti_increase;
3358                 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
3359                 p->entries[i].trigger_threshold =
3360                         entries[i].trigger_threshold;
3361                 p->entries[i].ccti_min = entries[i].ccti_min;
3362         }
3363
3364         rcu_read_unlock();
3365
3366         if (resp_len)
3367                 *resp_len += sizeof(*p);
3368
3369         return reply((struct ib_mad_hdr *)smp);
3370 }
3371
3372 /*
3373  * Apply congestion control information stored in the ppd to the
3374  * active structure.
3375  */
3376 static void apply_cc_state(struct hfi1_pportdata *ppd)
3377 {
3378         struct cc_state *old_cc_state, *new_cc_state;
3379
3380         new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL);
3381         if (!new_cc_state)
3382                 return;
3383
3384         /*
3385          * Hold the lock for updating *and* to prevent ppd information
3386          * from changing during the update.
3387          */
3388         spin_lock(&ppd->cc_state_lock);
3389
3390         old_cc_state = get_cc_state(ppd);
3391         if (!old_cc_state) {
3392                 /* never active, or shutting down */
3393                 spin_unlock(&ppd->cc_state_lock);
3394                 kfree(new_cc_state);
3395                 return;
3396         }
3397
3398         *new_cc_state = *old_cc_state;
3399
3400         new_cc_state->cct.ccti_limit = ppd->total_cct_entry - 1;
3401         memcpy(new_cc_state->cct.entries, ppd->ccti_entries,
3402                ppd->total_cct_entry * sizeof(struct ib_cc_table_entry));
3403
3404         new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED;
3405         new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map;
3406         memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries,
3407                OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry));
3408
3409         rcu_assign_pointer(ppd->cc_state, new_cc_state);
3410
3411         spin_unlock(&ppd->cc_state_lock);
3412
3413         call_rcu(&old_cc_state->rcu, cc_state_reclaim);
3414 }
3415
3416 static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data,
3417                                        struct ib_device *ibdev, u8 port,
3418                                        u32 *resp_len)
3419 {
3420         struct opa_congestion_setting_attr *p =
3421                 (struct opa_congestion_setting_attr *)data;
3422         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3423         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3424         struct opa_congestion_setting_entry_shadow *entries;
3425         int i;
3426
3427         /*
3428          * Save details from packet into the ppd.  Hold the cc_state_lock so
3429          * our information is consistent with anyone trying to apply the state.
3430          */
3431         spin_lock(&ppd->cc_state_lock);
3432         ppd->cc_sl_control_map = be32_to_cpu(p->control_map);
3433
3434         entries = ppd->congestion_entries;
3435         for (i = 0; i < OPA_MAX_SLS; i++) {
3436                 entries[i].ccti_increase = p->entries[i].ccti_increase;
3437                 entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer);
3438                 entries[i].trigger_threshold =
3439                         p->entries[i].trigger_threshold;
3440                 entries[i].ccti_min = p->entries[i].ccti_min;
3441         }
3442         spin_unlock(&ppd->cc_state_lock);
3443
3444         /* now apply the information */
3445         apply_cc_state(ppd);
3446
3447         return __subn_get_opa_cong_setting(smp, am, data, ibdev, port,
3448                                            resp_len);
3449 }
3450
3451 static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am,
3452                                         u8 *data, struct ib_device *ibdev,
3453                                         u8 port, u32 *resp_len)
3454 {
3455         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3456         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3457         struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data;
3458         s64 ts;
3459         int i;
3460
3461         if (am != 0) {
3462                 smp->status |= IB_SMP_INVALID_FIELD;
3463                 return reply((struct ib_mad_hdr *)smp);
3464         }
3465
3466         spin_lock_irq(&ppd->cc_log_lock);
3467
3468         cong_log->log_type = OPA_CC_LOG_TYPE_HFI;
3469         cong_log->congestion_flags = 0;
3470         cong_log->threshold_event_counter =
3471                 cpu_to_be16(ppd->threshold_event_counter);
3472         memcpy(cong_log->threshold_cong_event_map,
3473                ppd->threshold_cong_event_map,
3474                sizeof(cong_log->threshold_cong_event_map));
3475         /* keep timestamp in units of 1.024 usec */
3476         ts = ktime_to_ns(ktime_get()) / 1024;
3477         cong_log->current_time_stamp = cpu_to_be32(ts);
3478         for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) {
3479                 struct opa_hfi1_cong_log_event_internal *cce =
3480                         &ppd->cc_events[ppd->cc_mad_idx++];
3481                 if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS)
3482                         ppd->cc_mad_idx = 0;
3483                 /*
3484                  * Entries which are older than twice the time
3485                  * required to wrap the counter are supposed to
3486                  * be zeroed (CA10-49 IBTA, release 1.2.1, V1).
3487                  */
3488                 if ((u64)(ts - cce->timestamp) > (2 * UINT_MAX))
3489                         continue;
3490                 memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3);
3491                 memcpy(cong_log->events[i].remote_qp_number_cn_entry,
3492                        &cce->rqpn, 3);
3493                 cong_log->events[i].sl_svc_type_cn_entry =
3494                         ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7);
3495                 cong_log->events[i].remote_lid_cn_entry =
3496                         cpu_to_be32(cce->rlid);
3497                 cong_log->events[i].timestamp_cn_entry =
3498                         cpu_to_be32(cce->timestamp);
3499         }
3500
3501         /*
3502          * Reset threshold_cong_event_map, and threshold_event_counter
3503          * to 0 when log is read.
3504          */
3505         memset(ppd->threshold_cong_event_map, 0x0,
3506                sizeof(ppd->threshold_cong_event_map));
3507         ppd->threshold_event_counter = 0;
3508
3509         spin_unlock_irq(&ppd->cc_log_lock);
3510
3511         if (resp_len)
3512                 *resp_len += sizeof(struct opa_hfi1_cong_log);
3513
3514         return reply((struct ib_mad_hdr *)smp);
3515 }
3516
3517 static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3518                                    struct ib_device *ibdev, u8 port,
3519                                    u32 *resp_len)
3520 {
3521         struct ib_cc_table_attr *cc_table_attr =
3522                 (struct ib_cc_table_attr *)data;
3523         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3524         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3525         u32 start_block = OPA_AM_START_BLK(am);
3526         u32 n_blocks = OPA_AM_NBLK(am);
3527         struct ib_cc_table_entry_shadow *entries;
3528         int i, j;
3529         u32 sentry, eentry;
3530         struct cc_state *cc_state;
3531
3532         /* sanity check n_blocks, start_block */
3533         if (n_blocks == 0 ||
3534             start_block + n_blocks > ppd->cc_max_table_entries) {
3535                 smp->status |= IB_SMP_INVALID_FIELD;
3536                 return reply((struct ib_mad_hdr *)smp);
3537         }
3538
3539         rcu_read_lock();
3540
3541         cc_state = get_cc_state(ppd);
3542
3543         if (!cc_state) {
3544                 rcu_read_unlock();
3545                 return reply((struct ib_mad_hdr *)smp);
3546         }
3547
3548         sentry = start_block * IB_CCT_ENTRIES;
3549         eentry = sentry + (IB_CCT_ENTRIES * n_blocks);
3550
3551         cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit);
3552
3553         entries = cc_state->cct.entries;
3554
3555         /* return n_blocks, though the last block may not be full */
3556         for (j = 0, i = sentry; i < eentry; j++, i++)
3557                 cc_table_attr->ccti_entries[j].entry =
3558                         cpu_to_be16(entries[i].entry);
3559
3560         rcu_read_unlock();
3561
3562         if (resp_len)
3563                 *resp_len += sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
3564
3565         return reply((struct ib_mad_hdr *)smp);
3566 }
3567
3568 void cc_state_reclaim(struct rcu_head *rcu)
3569 {
3570         struct cc_state *cc_state = container_of(rcu, struct cc_state, rcu);
3571
3572         kfree(cc_state);
3573 }
3574
3575 static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3576                                    struct ib_device *ibdev, u8 port,
3577                                    u32 *resp_len)
3578 {
3579         struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data;
3580         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3581         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3582         u32 start_block = OPA_AM_START_BLK(am);
3583         u32 n_blocks = OPA_AM_NBLK(am);
3584         struct ib_cc_table_entry_shadow *entries;
3585         int i, j;
3586         u32 sentry, eentry;
3587         u16 ccti_limit;
3588
3589         /* sanity check n_blocks, start_block */
3590         if (n_blocks == 0 ||
3591             start_block + n_blocks > ppd->cc_max_table_entries) {
3592                 smp->status |= IB_SMP_INVALID_FIELD;
3593                 return reply((struct ib_mad_hdr *)smp);
3594         }
3595
3596         sentry = start_block * IB_CCT_ENTRIES;
3597         eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) +
3598                  (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1;
3599
3600         /* sanity check ccti_limit */
3601         ccti_limit = be16_to_cpu(p->ccti_limit);
3602         if (ccti_limit + 1 > eentry) {
3603                 smp->status |= IB_SMP_INVALID_FIELD;
3604                 return reply((struct ib_mad_hdr *)smp);
3605         }
3606
3607         /*
3608          * Save details from packet into the ppd.  Hold the cc_state_lock so
3609          * our information is consistent with anyone trying to apply the state.
3610          */
3611         spin_lock(&ppd->cc_state_lock);
3612         ppd->total_cct_entry = ccti_limit + 1;
3613         entries = ppd->ccti_entries;
3614         for (j = 0, i = sentry; i < eentry; j++, i++)
3615                 entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry);
3616         spin_unlock(&ppd->cc_state_lock);
3617
3618         /* now apply the information */
3619         apply_cc_state(ppd);
3620
3621         return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len);
3622 }
3623
3624 struct opa_led_info {
3625         __be32 rsvd_led_mask;
3626         __be32 rsvd;
3627 };
3628
3629 #define OPA_LED_SHIFT   31
3630 #define OPA_LED_MASK    BIT(OPA_LED_SHIFT)
3631
3632 static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3633                                    struct ib_device *ibdev, u8 port,
3634                                    u32 *resp_len)
3635 {
3636         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3637         struct hfi1_pportdata *ppd = dd->pport;
3638         struct opa_led_info *p = (struct opa_led_info *)data;
3639         u32 nport = OPA_AM_NPORT(am);
3640         u32 is_beaconing_active;
3641
3642         if (nport != 1) {
3643                 smp->status |= IB_SMP_INVALID_FIELD;
3644                 return reply((struct ib_mad_hdr *)smp);
3645         }
3646
3647         /*
3648          * This pairs with the memory barrier in hfi1_start_led_override to
3649          * ensure that we read the correct state of LED beaconing represented
3650          * by led_override_timer_active
3651          */
3652         smp_rmb();
3653         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
3654         p->rsvd_led_mask = cpu_to_be32(is_beaconing_active << OPA_LED_SHIFT);
3655
3656         if (resp_len)
3657                 *resp_len += sizeof(struct opa_led_info);
3658
3659         return reply((struct ib_mad_hdr *)smp);
3660 }
3661
3662 static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3663                                    struct ib_device *ibdev, u8 port,
3664                                    u32 *resp_len)
3665 {
3666         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3667         struct opa_led_info *p = (struct opa_led_info *)data;
3668         u32 nport = OPA_AM_NPORT(am);
3669         int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK);
3670
3671         if (nport != 1) {
3672                 smp->status |= IB_SMP_INVALID_FIELD;
3673                 return reply((struct ib_mad_hdr *)smp);
3674         }
3675
3676         if (on)
3677                 hfi1_start_led_override(dd->pport, 2000, 1500);
3678         else
3679                 shutdown_led_override(dd->pport);
3680
3681         return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len);
3682 }
3683
3684 static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3685                             u8 *data, struct ib_device *ibdev, u8 port,
3686                             u32 *resp_len)
3687 {
3688         int ret;
3689         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3690
3691         switch (attr_id) {
3692         case IB_SMP_ATTR_NODE_DESC:
3693                 ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port,
3694                                               resp_len);
3695                 break;
3696         case IB_SMP_ATTR_NODE_INFO:
3697                 ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port,
3698                                               resp_len);
3699                 break;
3700         case IB_SMP_ATTR_PORT_INFO:
3701                 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port,
3702                                               resp_len);
3703                 break;
3704         case IB_SMP_ATTR_PKEY_TABLE:
3705                 ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port,
3706                                                resp_len);
3707                 break;
3708         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3709                 ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port,
3710                                               resp_len);
3711                 break;
3712         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3713                 ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port,
3714                                               resp_len);
3715                 break;
3716         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3717                 ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port,
3718                                                resp_len);
3719                 break;
3720         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3721                 ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3722                                                 resp_len);
3723                 break;
3724         case OPA_ATTRIB_ID_PORT_STATE_INFO:
3725                 ret = __subn_get_opa_psi(smp, am, data, ibdev, port,
3726                                          resp_len);
3727                 break;
3728         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3729                 ret = __subn_get_opa_bct(smp, am, data, ibdev, port,
3730                                          resp_len);
3731                 break;
3732         case OPA_ATTRIB_ID_CABLE_INFO:
3733                 ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port,
3734                                                 resp_len);
3735                 break;
3736         case IB_SMP_ATTR_VL_ARB_TABLE:
3737                 ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port,
3738                                             resp_len);
3739                 break;
3740         case OPA_ATTRIB_ID_CONGESTION_INFO:
3741                 ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port,
3742                                                resp_len);
3743                 break;
3744         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3745                 ret = __subn_get_opa_cong_setting(smp, am, data, ibdev,
3746                                                   port, resp_len);
3747                 break;
3748         case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
3749                 ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev,
3750                                                    port, resp_len);
3751                 break;
3752         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3753                 ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port,
3754                                               resp_len);
3755                 break;
3756         case IB_SMP_ATTR_LED_INFO:
3757                 ret = __subn_get_opa_led_info(smp, am, data, ibdev, port,
3758                                               resp_len);
3759                 break;
3760         case IB_SMP_ATTR_SM_INFO:
3761                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
3762                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3763                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
3764                         return IB_MAD_RESULT_SUCCESS;
3765                 /* FALLTHROUGH */
3766         default:
3767                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3768                 ret = reply((struct ib_mad_hdr *)smp);
3769                 break;
3770         }
3771         return ret;
3772 }
3773
3774 static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3775                             u8 *data, struct ib_device *ibdev, u8 port,
3776                             u32 *resp_len)
3777 {
3778         int ret;
3779         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3780
3781         switch (attr_id) {
3782         case IB_SMP_ATTR_PORT_INFO:
3783                 ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port,
3784                                               resp_len);
3785                 break;
3786         case IB_SMP_ATTR_PKEY_TABLE:
3787                 ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port,
3788                                                resp_len);
3789                 break;
3790         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3791                 ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port,
3792                                               resp_len);
3793                 break;
3794         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3795                 ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port,
3796                                               resp_len);
3797                 break;
3798         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3799                 ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port,
3800                                                resp_len);
3801                 break;
3802         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3803                 ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3804                                                 resp_len);
3805                 break;
3806         case OPA_ATTRIB_ID_PORT_STATE_INFO:
3807                 ret = __subn_set_opa_psi(smp, am, data, ibdev, port,
3808                                          resp_len);
3809                 break;
3810         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3811                 ret = __subn_set_opa_bct(smp, am, data, ibdev, port,
3812                                          resp_len);
3813                 break;
3814         case IB_SMP_ATTR_VL_ARB_TABLE:
3815                 ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port,
3816                                             resp_len);
3817                 break;
3818         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3819                 ret = __subn_set_opa_cong_setting(smp, am, data, ibdev,
3820                                                   port, resp_len);
3821                 break;
3822         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3823                 ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port,
3824                                               resp_len);
3825                 break;
3826         case IB_SMP_ATTR_LED_INFO:
3827                 ret = __subn_set_opa_led_info(smp, am, data, ibdev, port,
3828                                               resp_len);
3829                 break;
3830         case IB_SMP_ATTR_SM_INFO:
3831                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
3832                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3833                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
3834                         return IB_MAD_RESULT_SUCCESS;
3835                 /* FALLTHROUGH */
3836         default:
3837                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3838                 ret = reply((struct ib_mad_hdr *)smp);
3839                 break;
3840         }
3841         return ret;
3842 }
3843
3844 static inline void set_aggr_error(struct opa_aggregate *ag)
3845 {
3846         ag->err_reqlength |= cpu_to_be16(0x8000);
3847 }
3848
3849 static int subn_get_opa_aggregate(struct opa_smp *smp,
3850                                   struct ib_device *ibdev, u8 port,
3851                                   u32 *resp_len)
3852 {
3853         int i;
3854         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3855         u8 *next_smp = opa_get_smp_data(smp);
3856
3857         if (num_attr < 1 || num_attr > 117) {
3858                 smp->status |= IB_SMP_INVALID_FIELD;
3859                 return reply((struct ib_mad_hdr *)smp);
3860         }
3861
3862         for (i = 0; i < num_attr; i++) {
3863                 struct opa_aggregate *agg;
3864                 size_t agg_data_len;
3865                 size_t agg_size;
3866                 u32 am;
3867
3868                 agg = (struct opa_aggregate *)next_smp;
3869                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3870                 agg_size = sizeof(*agg) + agg_data_len;
3871                 am = be32_to_cpu(agg->attr_mod);
3872
3873                 *resp_len += agg_size;
3874
3875                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3876                         smp->status |= IB_SMP_INVALID_FIELD;
3877                         return reply((struct ib_mad_hdr *)smp);
3878                 }
3879
3880                 /* zero the payload for this segment */
3881                 memset(next_smp + sizeof(*agg), 0, agg_data_len);
3882
3883                 (void)subn_get_opa_sma(agg->attr_id, smp, am, agg->data,
3884                                         ibdev, port, NULL);
3885                 if (smp->status & ~IB_SMP_DIRECTION) {
3886                         set_aggr_error(agg);
3887                         return reply((struct ib_mad_hdr *)smp);
3888                 }
3889                 next_smp += agg_size;
3890         }
3891
3892         return reply((struct ib_mad_hdr *)smp);
3893 }
3894
3895 static int subn_set_opa_aggregate(struct opa_smp *smp,
3896                                   struct ib_device *ibdev, u8 port,
3897                                   u32 *resp_len)
3898 {
3899         int i;
3900         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3901         u8 *next_smp = opa_get_smp_data(smp);
3902
3903         if (num_attr < 1 || num_attr > 117) {
3904                 smp->status |= IB_SMP_INVALID_FIELD;
3905                 return reply((struct ib_mad_hdr *)smp);
3906         }
3907
3908         for (i = 0; i < num_attr; i++) {
3909                 struct opa_aggregate *agg;
3910                 size_t agg_data_len;
3911                 size_t agg_size;
3912                 u32 am;
3913
3914                 agg = (struct opa_aggregate *)next_smp;
3915                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3916                 agg_size = sizeof(*agg) + agg_data_len;
3917                 am = be32_to_cpu(agg->attr_mod);
3918
3919                 *resp_len += agg_size;
3920
3921                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3922                         smp->status |= IB_SMP_INVALID_FIELD;
3923                         return reply((struct ib_mad_hdr *)smp);
3924                 }
3925
3926                 (void)subn_set_opa_sma(agg->attr_id, smp, am, agg->data,
3927                                         ibdev, port, NULL);
3928                 if (smp->status & ~IB_SMP_DIRECTION) {
3929                         set_aggr_error(agg);
3930                         return reply((struct ib_mad_hdr *)smp);
3931                 }
3932                 next_smp += agg_size;
3933         }
3934
3935         return reply((struct ib_mad_hdr *)smp);
3936 }
3937
3938 /*
3939  * OPAv1 specifies that, on the transition to link up, these counters
3940  * are cleared:
3941  *   PortRcvErrors [*]
3942  *   LinkErrorRecovery
3943  *   LocalLinkIntegrityErrors
3944  *   ExcessiveBufferOverruns [*]
3945  *
3946  * [*] Error info associated with these counters is retained, but the
3947  * error info status is reset to 0.
3948  */
3949 void clear_linkup_counters(struct hfi1_devdata *dd)
3950 {
3951         /* PortRcvErrors */
3952         write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3953         dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3954         /* LinkErrorRecovery */
3955         write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3956         write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
3957         /* LocalLinkIntegrityErrors */
3958         write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0);
3959         write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3960         /* ExcessiveBufferOverruns */
3961         write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3962         dd->rcv_ovfl_cnt = 0;
3963         dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3964 }
3965
3966 /*
3967  * is_local_mad() returns 1 if 'mad' is sent from, and destined to the
3968  * local node, 0 otherwise.
3969  */
3970 static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad,
3971                         const struct ib_wc *in_wc)
3972 {
3973         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3974         const struct opa_smp *smp = (const struct opa_smp *)mad;
3975
3976         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
3977                 return (smp->hop_cnt == 0 &&
3978                         smp->route.dr.dr_slid == OPA_LID_PERMISSIVE &&
3979                         smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE);
3980         }
3981
3982         return (in_wc->slid == ppd->lid);
3983 }
3984
3985 /*
3986  * opa_local_smp_check() should only be called on MADs for which
3987  * is_local_mad() returns true. It applies the SMP checks that are
3988  * specific to SMPs which are sent from, and destined to this node.
3989  * opa_local_smp_check() returns 0 if the SMP passes its checks, 1
3990  * otherwise.
3991  *
3992  * SMPs which arrive from other nodes are instead checked by
3993  * opa_smp_check().
3994  */
3995 static int opa_local_smp_check(struct hfi1_ibport *ibp,
3996                                const struct ib_wc *in_wc)
3997 {
3998         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3999         u16 slid = in_wc->slid;
4000         u16 pkey;
4001
4002         if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))
4003                 return 1;
4004
4005         pkey = ppd->pkeys[in_wc->pkey_index];
4006         /*
4007          * We need to do the "node-local" checks specified in OPAv1,
4008          * rev 0.90, section 9.10.26, which are:
4009          *   - pkey is 0x7fff, or 0xffff
4010          *   - Source QPN == 0 || Destination QPN == 0
4011          *   - the MAD header's management class is either
4012          *     IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or
4013          *     IB_MGMT_CLASS_SUBN_LID_ROUTED
4014          *   - SLID != 0
4015          *
4016          * However, we know (and so don't need to check again) that,
4017          * for local SMPs, the MAD stack passes MADs with:
4018          *   - Source QPN of 0
4019          *   - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4020          *   - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or
4021          *     our own port's lid
4022          *
4023          */
4024         if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY)
4025                 return 0;
4026         ingress_pkey_table_fail(ppd, pkey, slid);
4027         return 1;
4028 }
4029
4030 static int process_subn_opa(struct ib_device *ibdev, int mad_flags,
4031                             u8 port, const struct opa_mad *in_mad,
4032                             struct opa_mad *out_mad,
4033                             u32 *resp_len)
4034 {
4035         struct opa_smp *smp = (struct opa_smp *)out_mad;
4036         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4037         u8 *data;
4038         u32 am;
4039         __be16 attr_id;
4040         int ret;
4041
4042         *out_mad = *in_mad;
4043         data = opa_get_smp_data(smp);
4044
4045         am = be32_to_cpu(smp->attr_mod);
4046         attr_id = smp->attr_id;
4047         if (smp->class_version != OPA_SMI_CLASS_VERSION) {
4048                 smp->status |= IB_SMP_UNSUP_VERSION;
4049                 ret = reply((struct ib_mad_hdr *)smp);
4050                 return ret;
4051         }
4052         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey,
4053                          smp->route.dr.dr_slid, smp->route.dr.return_path,
4054                          smp->hop_cnt);
4055         if (ret) {
4056                 u32 port_num = be32_to_cpu(smp->attr_mod);
4057
4058                 /*
4059                  * If this is a get/set portinfo, we already check the
4060                  * M_Key if the MAD is for another port and the M_Key
4061                  * is OK on the receiving port. This check is needed
4062                  * to increment the error counters when the M_Key
4063                  * fails to match on *both* ports.
4064                  */
4065                 if (attr_id == IB_SMP_ATTR_PORT_INFO &&
4066                     (smp->method == IB_MGMT_METHOD_GET ||
4067                      smp->method == IB_MGMT_METHOD_SET) &&
4068                     port_num && port_num <= ibdev->phys_port_cnt &&
4069                     port != port_num)
4070                         (void)check_mkey(to_iport(ibdev, port_num),
4071                                           (struct ib_mad_hdr *)smp, 0,
4072                                           smp->mkey, smp->route.dr.dr_slid,
4073                                           smp->route.dr.return_path,
4074                                           smp->hop_cnt);
4075                 ret = IB_MAD_RESULT_FAILURE;
4076                 return ret;
4077         }
4078
4079         *resp_len = opa_get_smp_header_size(smp);
4080
4081         switch (smp->method) {
4082         case IB_MGMT_METHOD_GET:
4083                 switch (attr_id) {
4084                 default:
4085                         clear_opa_smp_data(smp);
4086                         ret = subn_get_opa_sma(attr_id, smp, am, data,
4087                                                ibdev, port, resp_len);
4088                         break;
4089                 case OPA_ATTRIB_ID_AGGREGATE:
4090                         ret = subn_get_opa_aggregate(smp, ibdev, port,
4091                                                      resp_len);
4092                         break;
4093                 }
4094                 break;
4095         case IB_MGMT_METHOD_SET:
4096                 switch (attr_id) {
4097                 default:
4098                         ret = subn_set_opa_sma(attr_id, smp, am, data,
4099                                                ibdev, port, resp_len);
4100                         break;
4101                 case OPA_ATTRIB_ID_AGGREGATE:
4102                         ret = subn_set_opa_aggregate(smp, ibdev, port,
4103                                                      resp_len);
4104                         break;
4105                 }
4106                 break;
4107         case IB_MGMT_METHOD_TRAP:
4108         case IB_MGMT_METHOD_REPORT:
4109         case IB_MGMT_METHOD_REPORT_RESP:
4110         case IB_MGMT_METHOD_GET_RESP:
4111                 /*
4112                  * The ib_mad module will call us to process responses
4113                  * before checking for other consumers.
4114                  * Just tell the caller to process it normally.
4115                  */
4116                 ret = IB_MAD_RESULT_SUCCESS;
4117                 break;
4118         default:
4119                 smp->status |= IB_SMP_UNSUP_METHOD;
4120                 ret = reply((struct ib_mad_hdr *)smp);
4121                 break;
4122         }
4123
4124         return ret;
4125 }
4126
4127 static int process_subn(struct ib_device *ibdev, int mad_flags,
4128                         u8 port, const struct ib_mad *in_mad,
4129                         struct ib_mad *out_mad)
4130 {
4131         struct ib_smp *smp = (struct ib_smp *)out_mad;
4132         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4133         int ret;
4134
4135         *out_mad = *in_mad;
4136         if (smp->class_version != 1) {
4137                 smp->status |= IB_SMP_UNSUP_VERSION;
4138                 ret = reply((struct ib_mad_hdr *)smp);
4139                 return ret;
4140         }
4141
4142         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags,
4143                          smp->mkey, (__force __be32)smp->dr_slid,
4144                          smp->return_path, smp->hop_cnt);
4145         if (ret) {
4146                 u32 port_num = be32_to_cpu(smp->attr_mod);
4147
4148                 /*
4149                  * If this is a get/set portinfo, we already check the
4150                  * M_Key if the MAD is for another port and the M_Key
4151                  * is OK on the receiving port. This check is needed
4152                  * to increment the error counters when the M_Key
4153                  * fails to match on *both* ports.
4154                  */
4155                 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
4156                     (smp->method == IB_MGMT_METHOD_GET ||
4157                      smp->method == IB_MGMT_METHOD_SET) &&
4158                     port_num && port_num <= ibdev->phys_port_cnt &&
4159                     port != port_num)
4160                         (void)check_mkey(to_iport(ibdev, port_num),
4161                                          (struct ib_mad_hdr *)smp, 0,
4162                                          smp->mkey,
4163                                          (__force __be32)smp->dr_slid,
4164                                          smp->return_path, smp->hop_cnt);
4165                 ret = IB_MAD_RESULT_FAILURE;
4166                 return ret;
4167         }
4168
4169         switch (smp->method) {
4170         case IB_MGMT_METHOD_GET:
4171                 switch (smp->attr_id) {
4172                 case IB_SMP_ATTR_NODE_INFO:
4173                         ret = subn_get_nodeinfo(smp, ibdev, port);
4174                         break;
4175                 default:
4176                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
4177                         ret = reply((struct ib_mad_hdr *)smp);
4178                         break;
4179                 }
4180                 break;
4181         }
4182
4183         return ret;
4184 }
4185
4186 static int process_perf(struct ib_device *ibdev, u8 port,
4187                         const struct ib_mad *in_mad,
4188                         struct ib_mad *out_mad)
4189 {
4190         struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
4191         struct ib_class_port_info *cpi = (struct ib_class_port_info *)
4192                                                 &pmp->data;
4193         int ret = IB_MAD_RESULT_FAILURE;
4194
4195         *out_mad = *in_mad;
4196         if (pmp->mad_hdr.class_version != 1) {
4197                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4198                 ret = reply((struct ib_mad_hdr *)pmp);
4199                 return ret;
4200         }
4201
4202         switch (pmp->mad_hdr.method) {
4203         case IB_MGMT_METHOD_GET:
4204                 switch (pmp->mad_hdr.attr_id) {
4205                 case IB_PMA_PORT_COUNTERS:
4206                         ret = pma_get_ib_portcounters(pmp, ibdev, port);
4207                         break;
4208                 case IB_PMA_PORT_COUNTERS_EXT:
4209                         ret = pma_get_ib_portcounters_ext(pmp, ibdev, port);
4210                         break;
4211                 case IB_PMA_CLASS_PORT_INFO:
4212                         cpi->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
4213                         ret = reply((struct ib_mad_hdr *)pmp);
4214                         break;
4215                 default:
4216                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4217                         ret = reply((struct ib_mad_hdr *)pmp);
4218                         break;
4219                 }
4220                 break;
4221
4222         case IB_MGMT_METHOD_SET:
4223                 if (pmp->mad_hdr.attr_id) {
4224                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4225                         ret = reply((struct ib_mad_hdr *)pmp);
4226                 }
4227                 break;
4228
4229         case IB_MGMT_METHOD_TRAP:
4230         case IB_MGMT_METHOD_GET_RESP:
4231                 /*
4232                  * The ib_mad module will call us to process responses
4233                  * before checking for other consumers.
4234                  * Just tell the caller to process it normally.
4235                  */
4236                 ret = IB_MAD_RESULT_SUCCESS;
4237                 break;
4238
4239         default:
4240                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4241                 ret = reply((struct ib_mad_hdr *)pmp);
4242                 break;
4243         }
4244
4245         return ret;
4246 }
4247
4248 static int process_perf_opa(struct ib_device *ibdev, u8 port,
4249                             const struct opa_mad *in_mad,
4250                             struct opa_mad *out_mad, u32 *resp_len)
4251 {
4252         struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad;
4253         int ret;
4254
4255         *out_mad = *in_mad;
4256
4257         if (pmp->mad_hdr.class_version != OPA_SMI_CLASS_VERSION) {
4258                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4259                 return reply((struct ib_mad_hdr *)pmp);
4260         }
4261
4262         *resp_len = sizeof(pmp->mad_hdr);
4263
4264         switch (pmp->mad_hdr.method) {
4265         case IB_MGMT_METHOD_GET:
4266                 switch (pmp->mad_hdr.attr_id) {
4267                 case IB_PMA_CLASS_PORT_INFO:
4268                         ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len);
4269                         break;
4270                 case OPA_PM_ATTRIB_ID_PORT_STATUS:
4271                         ret = pma_get_opa_portstatus(pmp, ibdev, port,
4272                                                      resp_len);
4273                         break;
4274                 case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS:
4275                         ret = pma_get_opa_datacounters(pmp, ibdev, port,
4276                                                        resp_len);
4277                         break;
4278                 case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS:
4279                         ret = pma_get_opa_porterrors(pmp, ibdev, port,
4280                                                      resp_len);
4281                         break;
4282                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4283                         ret = pma_get_opa_errorinfo(pmp, ibdev, port,
4284                                                     resp_len);
4285                         break;
4286                 default:
4287                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4288                         ret = reply((struct ib_mad_hdr *)pmp);
4289                         break;
4290                 }
4291                 break;
4292
4293         case IB_MGMT_METHOD_SET:
4294                 switch (pmp->mad_hdr.attr_id) {
4295                 case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS:
4296                         ret = pma_set_opa_portstatus(pmp, ibdev, port,
4297                                                      resp_len);
4298                         break;
4299                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4300                         ret = pma_set_opa_errorinfo(pmp, ibdev, port,
4301                                                     resp_len);
4302                         break;
4303                 default:
4304                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4305                         ret = reply((struct ib_mad_hdr *)pmp);
4306                         break;
4307                 }
4308                 break;
4309
4310         case IB_MGMT_METHOD_TRAP:
4311         case IB_MGMT_METHOD_GET_RESP:
4312                 /*
4313                  * The ib_mad module will call us to process responses
4314                  * before checking for other consumers.
4315                  * Just tell the caller to process it normally.
4316                  */
4317                 ret = IB_MAD_RESULT_SUCCESS;
4318                 break;
4319
4320         default:
4321                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4322                 ret = reply((struct ib_mad_hdr *)pmp);
4323                 break;
4324         }
4325
4326         return ret;
4327 }
4328
4329 static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags,
4330                                 u8 port, const struct ib_wc *in_wc,
4331                                 const struct ib_grh *in_grh,
4332                                 const struct opa_mad *in_mad,
4333                                 struct opa_mad *out_mad, size_t *out_mad_size,
4334                                 u16 *out_mad_pkey_index)
4335 {
4336         int ret;
4337         int pkey_idx;
4338         u32 resp_len = 0;
4339         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4340
4341         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
4342         if (pkey_idx < 0) {
4343                 pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
4344                         hfi1_get_pkey(ibp, 1));
4345                 pkey_idx = 1;
4346         }
4347         *out_mad_pkey_index = (u16)pkey_idx;
4348
4349         switch (in_mad->mad_hdr.mgmt_class) {
4350         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4351         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4352                 if (is_local_mad(ibp, in_mad, in_wc)) {
4353                         ret = opa_local_smp_check(ibp, in_wc);
4354                         if (ret)
4355                                 return IB_MAD_RESULT_FAILURE;
4356                 }
4357                 ret = process_subn_opa(ibdev, mad_flags, port, in_mad,
4358                                        out_mad, &resp_len);
4359                 goto bail;
4360         case IB_MGMT_CLASS_PERF_MGMT:
4361                 ret = process_perf_opa(ibdev, port, in_mad, out_mad,
4362                                        &resp_len);
4363                 goto bail;
4364
4365         default:
4366                 ret = IB_MAD_RESULT_SUCCESS;
4367         }
4368
4369 bail:
4370         if (ret & IB_MAD_RESULT_REPLY)
4371                 *out_mad_size = round_up(resp_len, 8);
4372         else if (ret & IB_MAD_RESULT_SUCCESS)
4373                 *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh);
4374
4375         return ret;
4376 }
4377
4378 static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4379                                const struct ib_wc *in_wc,
4380                                const struct ib_grh *in_grh,
4381                                const struct ib_mad *in_mad,
4382                                struct ib_mad *out_mad)
4383 {
4384         int ret;
4385
4386         switch (in_mad->mad_hdr.mgmt_class) {
4387         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4388         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4389                 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
4390                 break;
4391         case IB_MGMT_CLASS_PERF_MGMT:
4392                 ret = process_perf(ibdev, port, in_mad, out_mad);
4393                 break;
4394         default:
4395                 ret = IB_MAD_RESULT_SUCCESS;
4396                 break;
4397         }
4398
4399         return ret;
4400 }
4401
4402 /**
4403  * hfi1_process_mad - process an incoming MAD packet
4404  * @ibdev: the infiniband device this packet came in on
4405  * @mad_flags: MAD flags
4406  * @port: the port number this packet came in on
4407  * @in_wc: the work completion entry for this packet
4408  * @in_grh: the global route header for this packet
4409  * @in_mad: the incoming MAD
4410  * @out_mad: any outgoing MAD reply
4411  *
4412  * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
4413  * interested in processing.
4414  *
4415  * Note that the verbs framework has already done the MAD sanity checks,
4416  * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4417  * MADs.
4418  *
4419  * This is called by the ib_mad module.
4420  */
4421 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4422                      const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4423                      const struct ib_mad_hdr *in_mad, size_t in_mad_size,
4424                      struct ib_mad_hdr *out_mad, size_t *out_mad_size,
4425                      u16 *out_mad_pkey_index)
4426 {
4427         switch (in_mad->base_version) {
4428         case OPA_MGMT_BASE_VERSION:
4429                 if (unlikely(in_mad_size != sizeof(struct opa_mad))) {
4430                         dev_err(ibdev->dma_device, "invalid in_mad_size\n");
4431                         return IB_MAD_RESULT_FAILURE;
4432                 }
4433                 return hfi1_process_opa_mad(ibdev, mad_flags, port,
4434                                             in_wc, in_grh,
4435                                             (struct opa_mad *)in_mad,
4436                                             (struct opa_mad *)out_mad,
4437                                             out_mad_size,
4438                                             out_mad_pkey_index);
4439         case IB_MGMT_BASE_VERSION:
4440                 return hfi1_process_ib_mad(ibdev, mad_flags, port,
4441                                           in_wc, in_grh,
4442                                           (const struct ib_mad *)in_mad,
4443                                           (struct ib_mad *)out_mad);
4444         default:
4445                 break;
4446         }
4447
4448         return IB_MAD_RESULT_FAILURE;
4449 }