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 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u8 port)
  82 {
  83         struct ib_event event;
  84
  85         event.event = IB_EVENT_PKEY_CHANGE;
  86         event.device = &dd->verbs_dev.rdi.ibdev;
  87         event.element.port_num = port;
  88         ib_dispatch_event(&event);
  89 }
  90
  91 static void send_trap(struct hfi1_ibport *ibp, void *data, unsigned len)
  92 {
  93         struct ib_mad_send_buf *send_buf;
  94         struct ib_mad_agent *agent;
  95         struct opa_smp *smp;
  96         int ret;
  97         unsigned long flags;
  98         unsigned long timeout;
  99         int pkey_idx;
 100         u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp;
 101
 102         agent = ibp->rvp.send_agent;
 103         if (!agent)
 104                 return;
 105
 106         /* o14-3.2.1 */
 107         if (ppd_from_ibp(ibp)->lstate != IB_PORT_ACTIVE)
 108                 return;
 109
 110         /* o14-2 */
 111         if (ibp->rvp.trap_timeout && time_before(jiffies,
 112                                                  ibp->rvp.trap_timeout))
 113                 return;
 114
 115         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
 116         if (pkey_idx < 0) {
 117                 pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n",
 118                         __func__, hfi1_get_pkey(ibp, 1));
 119                 pkey_idx = 1;
 120         }
 121
 122         send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 0,
 123                                       IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
 124                                       GFP_ATOMIC, IB_MGMT_BASE_VERSION);
 125         if (IS_ERR(send_buf))
 126                 return;
 127
 128         smp = send_buf->mad;
 129         smp->base_version = OPA_MGMT_BASE_VERSION;
 130         smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
 131         smp->class_version = OPA_SMI_CLASS_VERSION;
 132         smp->method = IB_MGMT_METHOD_TRAP;
 133         ibp->rvp.tid++;
 134         smp->tid = cpu_to_be64(ibp->rvp.tid);
 135         smp->attr_id = IB_SMP_ATTR_NOTICE;
 136         /* o14-1: smp->mkey = 0; */
 137         memcpy(smp->route.lid.data, data, len);
 138
 139         spin_lock_irqsave(&ibp->rvp.lock, flags);
 140         if (!ibp->rvp.sm_ah) {
 141                 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
 142                         struct ib_ah *ah;
 143
 144                         ah = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid);
 145                         if (IS_ERR(ah)) {
 146                                 ret = PTR_ERR(ah);
 147                         } else {
 148                                 send_buf->ah = ah;
 149                                 ibp->rvp.sm_ah = ibah_to_rvtah(ah);
 150                                 ret = 0;
 151                         }
 152                 } else {
 153                         ret = -EINVAL;
 154                 }
 155         } else {
 156                 send_buf->ah = &ibp->rvp.sm_ah->ibah;
 157                 ret = 0;
 158         }
 159         spin_unlock_irqrestore(&ibp->rvp.lock, flags);
 160
 161         if (!ret)
 162                 ret = ib_post_send_mad(send_buf, NULL);
 163         if (!ret) {
 164                 /* 4.096 usec. */
 165                 timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000;
 166                 ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout);
 167         } else {
 168                 ib_free_send_mad(send_buf);
 169                 ibp->rvp.trap_timeout = 0;
 170         }
 171 }
 172
 173 /*
 174  * Send a bad [PQ]_Key trap (ch. 14.3.8).
 175  */
 176 void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
 177                     u32 qp1, u32 qp2, u16 lid1, u16 lid2)
 178 {
 179         struct opa_mad_notice_attr data;
 180         u32 lid = ppd_from_ibp(ibp)->lid;
 181         u32 _lid1 = lid1;
 182         u32 _lid2 = lid2;
 183
 184         memset(&data, 0, sizeof(data));
 185
 186         if (trap_num == OPA_TRAP_BAD_P_KEY)
 187                 ibp->rvp.pkey_violations++;
 188         else
 189                 ibp->rvp.qkey_violations++;
 190         ibp->rvp.n_pkt_drops++;
 191
 192         /* Send violation trap */
 193         data.generic_type = IB_NOTICE_TYPE_SECURITY;
 194         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 195         data.trap_num = trap_num;
 196         data.issuer_lid = cpu_to_be32(lid);
 197         data.ntc_257_258.lid1 = cpu_to_be32(_lid1);
 198         data.ntc_257_258.lid2 = cpu_to_be32(_lid2);
 199         data.ntc_257_258.key = cpu_to_be32(key);
 200         data.ntc_257_258.sl = sl << 3;
 201         data.ntc_257_258.qp1 = cpu_to_be32(qp1);
 202         data.ntc_257_258.qp2 = cpu_to_be32(qp2);
 203
 204         send_trap(ibp, &data, sizeof(data));
 205 }
 206
 207 /*
 208  * Send a bad M_Key trap (ch. 14.3.9).
 209  */
 210 static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 211                      __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt)
 212 {
 213         struct opa_mad_notice_attr data;
 214         u32 lid = ppd_from_ibp(ibp)->lid;
 215
 216         memset(&data, 0, sizeof(data));
 217         /* Send violation trap */
 218         data.generic_type = IB_NOTICE_TYPE_SECURITY;
 219         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 220         data.trap_num = OPA_TRAP_BAD_M_KEY;
 221         data.issuer_lid = cpu_to_be32(lid);
 222         data.ntc_256.lid = data.issuer_lid;
 223         data.ntc_256.method = mad->method;
 224         data.ntc_256.attr_id = mad->attr_id;
 225         data.ntc_256.attr_mod = mad->attr_mod;
 226         data.ntc_256.mkey = mkey;
 227         if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
 228                 data.ntc_256.dr_slid = dr_slid;
 229                 data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE;
 230                 if (hop_cnt > ARRAY_SIZE(data.ntc_256.dr_rtn_path)) {
 231                         data.ntc_256.dr_trunc_hop |=
 232                                 IB_NOTICE_TRAP_DR_TRUNC;
 233                         hop_cnt = ARRAY_SIZE(data.ntc_256.dr_rtn_path);
 234                 }
 235                 data.ntc_256.dr_trunc_hop |= hop_cnt;
 236                 memcpy(data.ntc_256.dr_rtn_path, return_path,
 237                        hop_cnt);
 238         }
 239
 240         send_trap(ibp, &data, sizeof(data));
 241 }
 242
 243 /*
 244  * Send a Port Capability Mask Changed trap (ch. 14.3.11).
 245  */
 246 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num)
 247 {
 248         struct opa_mad_notice_attr data;
 249         struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
 250         struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
 251         struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
 252         u32 lid = ppd_from_ibp(ibp)->lid;
 253
 254         memset(&data, 0, sizeof(data));
 255
 256         data.generic_type = IB_NOTICE_TYPE_INFO;
 257         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 258         data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
 259         data.issuer_lid = cpu_to_be32(lid);
 260         data.ntc_144.lid = data.issuer_lid;
 261         data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 262
 263         send_trap(ibp, &data, sizeof(data));
 264 }
 265
 266 /*
 267  * Send a System Image GUID Changed trap (ch. 14.3.12).
 268  */
 269 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp)
 270 {
 271         struct opa_mad_notice_attr data;
 272         u32 lid = ppd_from_ibp(ibp)->lid;
 273
 274         memset(&data, 0, sizeof(data));
 275
 276         data.generic_type = IB_NOTICE_TYPE_INFO;
 277         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 278         data.trap_num = OPA_TRAP_CHANGE_SYSGUID;
 279         data.issuer_lid = cpu_to_be32(lid);
 280         data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid;
 281         data.ntc_145.lid = data.issuer_lid;
 282
 283         send_trap(ibp, &data, sizeof(data));
 284 }
 285
 286 /*
 287  * Send a Node Description Changed trap (ch. 14.3.13).
 288  */
 289 void hfi1_node_desc_chg(struct hfi1_ibport *ibp)
 290 {
 291         struct opa_mad_notice_attr data;
 292         u32 lid = ppd_from_ibp(ibp)->lid;
 293
 294         memset(&data, 0, sizeof(data));
 295
 296         data.generic_type = IB_NOTICE_TYPE_INFO;
 297         data.prod_type_lsb = IB_NOTICE_PROD_CA;
 298         data.trap_num = OPA_TRAP_CHANGE_CAPABILITY;
 299         data.issuer_lid = cpu_to_be32(lid);
 300         data.ntc_144.lid = data.issuer_lid;
 301         data.ntc_144.change_flags =
 302                 cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG);
 303
 304         send_trap(ibp, &data, sizeof(data));
 305 }
 306
 307 static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am,
 308                                    u8 *data, struct ib_device *ibdev,
 309                                    u8 port, u32 *resp_len)
 310 {
 311         struct opa_node_description *nd;
 312
 313         if (am) {
 314                 smp->status |= IB_SMP_INVALID_FIELD;
 315                 return reply((struct ib_mad_hdr *)smp);
 316         }
 317
 318         nd = (struct opa_node_description *)data;
 319
 320         memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
 321
 322         if (resp_len)
 323                 *resp_len += sizeof(*nd);
 324
 325         return reply((struct ib_mad_hdr *)smp);
 326 }
 327
 328 static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data,
 329                                    struct ib_device *ibdev, u8 port,
 330                                    u32 *resp_len)
 331 {
 332         struct opa_node_info *ni;
 333         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 334         unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
 335
 336         ni = (struct opa_node_info *)data;
 337
 338         /* GUID 0 is illegal */
 339         if (am || pidx >= dd->num_pports || dd->pport[pidx].guid == 0) {
 340                 smp->status |= IB_SMP_INVALID_FIELD;
 341                 return reply((struct ib_mad_hdr *)smp);
 342         }
 343
 344         ni->port_guid = cpu_to_be64(dd->pport[pidx].guid);
 345         ni->base_version = OPA_MGMT_BASE_VERSION;
 346         ni->class_version = OPA_SMI_CLASS_VERSION;
 347         ni->node_type = 1;     /* channel adapter */
 348         ni->num_ports = ibdev->phys_port_cnt;
 349         /* This is already in network order */
 350         ni->system_image_guid = ib_hfi1_sys_image_guid;
 351         /* Use first-port GUID as node */
 352         ni->node_guid = cpu_to_be64(dd->pport->guid);
 353         ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 354         ni->device_id = cpu_to_be16(dd->pcidev->device);
 355         ni->revision = cpu_to_be32(dd->minrev);
 356         ni->local_port_num = port;
 357         ni->vendor_id[0] = dd->oui1;
 358         ni->vendor_id[1] = dd->oui2;
 359         ni->vendor_id[2] = dd->oui3;
 360
 361         if (resp_len)
 362                 *resp_len += sizeof(*ni);
 363
 364         return reply((struct ib_mad_hdr *)smp);
 365 }
 366
 367 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
 368                              u8 port)
 369 {
 370         struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
 371         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 372         unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */
 373
 374         /* GUID 0 is illegal */
 375         if (smp->attr_mod || pidx >= dd->num_pports ||
 376             dd->pport[pidx].guid == 0)
 377                 smp->status |= IB_SMP_INVALID_FIELD;
 378         else
 379                 nip->port_guid = cpu_to_be64(dd->pport[pidx].guid);
 380
 381         nip->base_version = OPA_MGMT_BASE_VERSION;
 382         nip->class_version = OPA_SMI_CLASS_VERSION;
 383         nip->node_type = 1;     /* channel adapter */
 384         nip->num_ports = ibdev->phys_port_cnt;
 385         /* This is already in network order */
 386         nip->sys_guid = ib_hfi1_sys_image_guid;
 387          /* Use first-port GUID as node */
 388         nip->node_guid = cpu_to_be64(dd->pport->guid);
 389         nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd));
 390         nip->device_id = cpu_to_be16(dd->pcidev->device);
 391         nip->revision = cpu_to_be32(dd->minrev);
 392         nip->local_port_num = port;
 393         nip->vendor_id[0] = dd->oui1;
 394         nip->vendor_id[1] = dd->oui2;
 395         nip->vendor_id[2] = dd->oui3;
 396
 397         return reply((struct ib_mad_hdr *)smp);
 398 }
 399
 400 static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w)
 401 {
 402         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w);
 403 }
 404
 405 static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w)
 406 {
 407         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w);
 408 }
 409
 410 static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s)
 411 {
 412         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s);
 413 }
 414
 415 static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad,
 416                       int mad_flags, __be64 mkey, __be32 dr_slid,
 417                       u8 return_path[], u8 hop_cnt)
 418 {
 419         int valid_mkey = 0;
 420         int ret = 0;
 421
 422         /* Is the mkey in the process of expiring? */
 423         if (ibp->rvp.mkey_lease_timeout &&
 424             time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
 425                 /* Clear timeout and mkey protection field. */
 426                 ibp->rvp.mkey_lease_timeout = 0;
 427                 ibp->rvp.mkeyprot = 0;
 428         }
 429
 430         if ((mad_flags & IB_MAD_IGNORE_MKEY) ||  ibp->rvp.mkey == 0 ||
 431             ibp->rvp.mkey == mkey)
 432                 valid_mkey = 1;
 433
 434         /* Unset lease timeout on any valid Get/Set/TrapRepress */
 435         if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
 436             (mad->method == IB_MGMT_METHOD_GET ||
 437              mad->method == IB_MGMT_METHOD_SET ||
 438              mad->method == IB_MGMT_METHOD_TRAP_REPRESS))
 439                 ibp->rvp.mkey_lease_timeout = 0;
 440
 441         if (!valid_mkey) {
 442                 switch (mad->method) {
 443                 case IB_MGMT_METHOD_GET:
 444                         /* Bad mkey not a violation below level 2 */
 445                         if (ibp->rvp.mkeyprot < 2)
 446                                 break;
 447                 case IB_MGMT_METHOD_SET:
 448                 case IB_MGMT_METHOD_TRAP_REPRESS:
 449                         if (ibp->rvp.mkey_violations != 0xFFFF)
 450                                 ++ibp->rvp.mkey_violations;
 451                         if (!ibp->rvp.mkey_lease_timeout &&
 452                             ibp->rvp.mkey_lease_period)
 453                                 ibp->rvp.mkey_lease_timeout = jiffies +
 454                                         ibp->rvp.mkey_lease_period * HZ;
 455                         /* Generate a trap notice. */
 456                         bad_mkey(ibp, mad, mkey, dr_slid, return_path,
 457                                  hop_cnt);
 458                         ret = 1;
 459                 }
 460         }
 461
 462         return ret;
 463 }
 464
 465 /*
 466  * The SMA caches reads from LCB registers in case the LCB is unavailable.
 467  * (The LCB is unavailable in certain link states, for example.)
 468  */
 469 struct lcb_datum {
 470         u32 off;
 471         u64 val;
 472 };
 473
 474 static struct lcb_datum lcb_cache[] = {
 475         { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 },
 476 };
 477
 478 static int write_lcb_cache(u32 off, u64 val)
 479 {
 480         int i;
 481
 482         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 483                 if (lcb_cache[i].off == off) {
 484                         lcb_cache[i].val = val;
 485                         return 0;
 486                 }
 487         }
 488
 489         pr_warn("%s bad offset 0x%x\n", __func__, off);
 490         return -1;
 491 }
 492
 493 static int read_lcb_cache(u32 off, u64 *val)
 494 {
 495         int i;
 496
 497         for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) {
 498                 if (lcb_cache[i].off == off) {
 499                         *val = lcb_cache[i].val;
 500                         return 0;
 501                 }
 502         }
 503
 504         pr_warn("%s bad offset 0x%x\n", __func__, off);
 505         return -1;
 506 }
 507
 508 void read_ltp_rtt(struct hfi1_devdata *dd)
 509 {
 510         u64 reg;
 511
 512         if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, &reg))
 513                 dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__);
 514         else
 515                 write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg);
 516 }
 517
 518 static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
 519                                    struct ib_device *ibdev, u8 port,
 520                                    u32 *resp_len)
 521 {
 522         int i;
 523         struct hfi1_devdata *dd;
 524         struct hfi1_pportdata *ppd;
 525         struct hfi1_ibport *ibp;
 526         struct opa_port_info *pi = (struct opa_port_info *)data;
 527         u8 mtu;
 528         u8 credit_rate;
 529         u8 is_beaconing_active;
 530         u32 state;
 531         u32 num_ports = OPA_AM_NPORT(am);
 532         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
 533         u32 buffer_units;
 534         u64 tmp = 0;
 535
 536         if (num_ports != 1) {
 537                 smp->status |= IB_SMP_INVALID_FIELD;
 538                 return reply((struct ib_mad_hdr *)smp);
 539         }
 540
 541         dd = dd_from_ibdev(ibdev);
 542         /* IB numbers ports from 1, hw from 0 */
 543         ppd = dd->pport + (port - 1);
 544         ibp = &ppd->ibport_data;
 545
 546         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
 547             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
 548                 smp->status |= IB_SMP_INVALID_FIELD;
 549                 return reply((struct ib_mad_hdr *)smp);
 550         }
 551
 552         pi->lid = cpu_to_be32(ppd->lid);
 553
 554         /* Only return the mkey if the protection field allows it. */
 555         if (!(smp->method == IB_MGMT_METHOD_GET &&
 556               ibp->rvp.mkey != smp->mkey &&
 557               ibp->rvp.mkeyprot == 1))
 558                 pi->mkey = ibp->rvp.mkey;
 559
 560         pi->subnet_prefix = ibp->rvp.gid_prefix;
 561         pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid);
 562         pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
 563         pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period);
 564         pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp);
 565         pi->sa_qp = cpu_to_be32(ppd->sa_qp);
 566
 567         pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled);
 568         pi->link_width.supported = cpu_to_be16(ppd->link_width_supported);
 569         pi->link_width.active = cpu_to_be16(ppd->link_width_active);
 570
 571         pi->link_width_downgrade.supported =
 572                         cpu_to_be16(ppd->link_width_downgrade_supported);
 573         pi->link_width_downgrade.enabled =
 574                         cpu_to_be16(ppd->link_width_downgrade_enabled);
 575         pi->link_width_downgrade.tx_active =
 576                         cpu_to_be16(ppd->link_width_downgrade_tx_active);
 577         pi->link_width_downgrade.rx_active =
 578                         cpu_to_be16(ppd->link_width_downgrade_rx_active);
 579
 580         pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported);
 581         pi->link_speed.active = cpu_to_be16(ppd->link_speed_active);
 582         pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled);
 583
 584         state = driver_lstate(ppd);
 585
 586         if (start_of_sm_config && (state == IB_PORT_INIT))
 587                 ppd->is_sm_config_started = 1;
 588
 589         pi->port_phys_conf = (ppd->port_type & 0xf);
 590
 591         pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
 592         pi->port_states.ledenable_offlinereason |=
 593                 ppd->is_sm_config_started << 5;
 594         /*
 595          * This pairs with the memory barrier in hfi1_start_led_override to
 596          * ensure that we read the correct state of LED beaconing represented
 597          * by led_override_timer_active
 598          */
 599         smp_rmb();
 600         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
 601         pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6;
 602         pi->port_states.ledenable_offlinereason |=
 603                 ppd->offline_disabled_reason;
 604
 605         pi->port_states.portphysstate_portstate =
 606                 (hfi1_ibphys_portstate(ppd) << 4) | state;
 607
 608         pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc;
 609
 610         memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu));
 611         for (i = 0; i < ppd->vls_supported; i++) {
 612                 mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU);
 613                 if ((i % 2) == 0)
 614                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4);
 615                 else
 616                         pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu;
 617         }
 618         /* don't forget VL 15 */
 619         mtu = mtu_to_enum(dd->vld[15].mtu, 2048);
 620         pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu;
 621         pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL;
 622         pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS);
 623         pi->partenforce_filterraw |=
 624                 (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
 625         if (ppd->part_enforce & HFI1_PART_ENFORCE_IN)
 626                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
 627         if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT)
 628                 pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT;
 629         pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations);
 630         /* P_KeyViolations are counted by hardware. */
 631         pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
 632         pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
 633
 634         pi->vl.cap = ppd->vls_supported;
 635         pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit);
 636         pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP);
 637         pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP);
 638
 639         pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout;
 640
 641         pi->port_link_mode  = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 |
 642                                           OPA_PORT_LINK_MODE_OPA << 5 |
 643                                           OPA_PORT_LINK_MODE_OPA);
 644
 645         pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode);
 646
 647         pi->port_mode = cpu_to_be16(
 648                                 ppd->is_active_optimize_enabled ?
 649                                         OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0);
 650
 651         pi->port_packet_format.supported =
 652                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
 653         pi->port_packet_format.enabled =
 654                 cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B);
 655
 656         /* flit_control.interleave is (OPA V1, version .76):
 657          * bits         use
 658          * ----         ---
 659          * 2            res
 660          * 2            DistanceSupported
 661          * 2            DistanceEnabled
 662          * 5            MaxNextLevelTxEnabled
 663          * 5            MaxNestLevelRxSupported
 664          *
 665          * HFI supports only "distance mode 1" (see OPA V1, version .76,
 666          * section 9.6.2), so set DistanceSupported, DistanceEnabled
 667          * to 0x1.
 668          */
 669         pi->flit_control.interleave = cpu_to_be16(0x1400);
 670
 671         pi->link_down_reason = ppd->local_link_down_reason.sma;
 672         pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma;
 673         pi->port_error_action = cpu_to_be32(ppd->port_error_action);
 674         pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096);
 675
 676         /* 32.768 usec. response time (guessing) */
 677         pi->resptimevalue = 3;
 678
 679         pi->local_port_num = port;
 680
 681         /* buffer info for FM */
 682         pi->overall_buffer_space = cpu_to_be16(dd->link_credits);
 683
 684         pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid);
 685         pi->neigh_port_num = ppd->neighbor_port_number;
 686         pi->port_neigh_mode =
 687                 (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) |
 688                 (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) |
 689                 (ppd->neighbor_fm_security ?
 690                         OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0);
 691
 692         /* HFIs shall always return VL15 credits to their
 693          * neighbor in a timely manner, without any credit return pacing.
 694          */
 695         credit_rate = 0;
 696         buffer_units  = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC;
 697         buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK;
 698         buffer_units |= (credit_rate << 6) &
 699                                 OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE;
 700         buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT;
 701         pi->buffer_units = cpu_to_be32(buffer_units);
 702
 703         pi->opa_cap_mask = cpu_to_be16(OPA_CAP_MASK3_IsSharedSpaceSupported);
 704
 705         /* HFI supports a replay buffer 128 LTPs in size */
 706         pi->replay_depth.buffer = 0x80;
 707         /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */
 708         read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp);
 709
 710         /*
 711          * this counter is 16 bits wide, but the replay_depth.wire
 712          * variable is only 8 bits
 713          */
 714         if (tmp > 0xff)
 715                 tmp = 0xff;
 716         pi->replay_depth.wire = tmp;
 717
 718         if (resp_len)
 719                 *resp_len += sizeof(struct opa_port_info);
 720
 721         return reply((struct ib_mad_hdr *)smp);
 722 }
 723
 724 /**
 725  * get_pkeys - return the PKEY table
 726  * @dd: the hfi1_ib device
 727  * @port: the IB port number
 728  * @pkeys: the pkey table is placed here
 729  */
 730 static int get_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
 731 {
 732         struct hfi1_pportdata *ppd = dd->pport + port - 1;
 733
 734         memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys));
 735
 736         return 0;
 737 }
 738
 739 static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
 740                                     struct ib_device *ibdev, u8 port,
 741                                     u32 *resp_len)
 742 {
 743         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
 744         u32 n_blocks_req = OPA_AM_NBLK(am);
 745         u32 start_block = am & 0x7ff;
 746         __be16 *p;
 747         u16 *q;
 748         int i;
 749         u16 n_blocks_avail;
 750         unsigned npkeys = hfi1_get_npkeys(dd);
 751         size_t size;
 752
 753         if (n_blocks_req == 0) {
 754                 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
 755                         port, start_block, n_blocks_req);
 756                 smp->status |= IB_SMP_INVALID_FIELD;
 757                 return reply((struct ib_mad_hdr *)smp);
 758         }
 759
 760         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
 761
 762         size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16);
 763
 764         if (start_block + n_blocks_req > n_blocks_avail ||
 765             n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
 766                 pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; "
 767                         "avail 0x%x; blk/smp 0x%lx\n",
 768                         start_block, n_blocks_req, n_blocks_avail,
 769                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
 770                 smp->status |= IB_SMP_INVALID_FIELD;
 771                 return reply((struct ib_mad_hdr *)smp);
 772         }
 773
 774         p = (__be16 *)data;
 775         q = (u16 *)data;
 776         /* get the real pkeys if we are requesting the first block */
 777         if (start_block == 0) {
 778                 get_pkeys(dd, port, q);
 779                 for (i = 0; i < npkeys; i++)
 780                         p[i] = cpu_to_be16(q[i]);
 781                 if (resp_len)
 782                         *resp_len += size;
 783         } else {
 784                 smp->status |= IB_SMP_INVALID_FIELD;
 785         }
 786         return reply((struct ib_mad_hdr *)smp);
 787 }
 788
 789 enum {
 790         HFI_TRANSITION_DISALLOWED,
 791         HFI_TRANSITION_IGNORED,
 792         HFI_TRANSITION_ALLOWED,
 793         HFI_TRANSITION_UNDEFINED,
 794 };
 795
 796 /*
 797  * Use shortened names to improve readability of
 798  * {logical,physical}_state_transitions
 799  */
 800 enum {
 801         __D = HFI_TRANSITION_DISALLOWED,
 802         __I = HFI_TRANSITION_IGNORED,
 803         __A = HFI_TRANSITION_ALLOWED,
 804         __U = HFI_TRANSITION_UNDEFINED,
 805 };
 806
 807 /*
 808  * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are
 809  * represented in physical_state_transitions.
 810  */
 811 #define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1)
 812
 813 /*
 814  * Within physical_state_transitions, rows represent "old" states,
 815  * columns "new" states, and physical_state_transitions.allowed[old][new]
 816  * indicates if the transition from old state to new state is legal (see
 817  * OPAg1v1, Table 6-4).
 818  */
 819 static const struct {
 820         u8 allowed[__N_PHYSTATES][__N_PHYSTATES];
 821 } physical_state_transitions = {
 822         {
 823                 /* 2    3    4    5    6    7    8    9   10   11 */
 824         /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D },
 825         /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A },
 826         /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 827         /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D },
 828         /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 829         /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D },
 830         /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 831         /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D },
 832         /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U },
 833         /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I },
 834         }
 835 };
 836
 837 /*
 838  * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented
 839  * logical_state_transitions
 840  */
 841
 842 #define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1)
 843
 844 /*
 845  * Within logical_state_transitions rows represent "old" states,
 846  * columns "new" states, and logical_state_transitions.allowed[old][new]
 847  * indicates if the transition from old state to new state is legal (see
 848  * OPAg1v1, Table 9-12).
 849  */
 850 static const struct {
 851         u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES];
 852 } logical_state_transitions = {
 853         {
 854                 /* 1    2    3    4    5 */
 855         /* 1 */ { __I, __D, __D, __D, __U},
 856         /* 2 */ { __D, __I, __A, __D, __U},
 857         /* 3 */ { __D, __D, __I, __A, __U},
 858         /* 4 */ { __D, __D, __I, __I, __U},
 859         /* 5 */ { __U, __U, __U, __U, __U},
 860         }
 861 };
 862
 863 static int logical_transition_allowed(int old, int new)
 864 {
 865         if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER ||
 866             new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) {
 867                 pr_warn("invalid logical state(s) (old %d new %d)\n",
 868                         old, new);
 869                 return HFI_TRANSITION_UNDEFINED;
 870         }
 871
 872         if (new == IB_PORT_NOP)
 873                 return HFI_TRANSITION_ALLOWED; /* always allowed */
 874
 875         /* adjust states for indexing into logical_state_transitions */
 876         old -= IB_PORT_DOWN;
 877         new -= IB_PORT_DOWN;
 878
 879         if (old < 0 || new < 0)
 880                 return HFI_TRANSITION_UNDEFINED;
 881         return logical_state_transitions.allowed[old][new];
 882 }
 883
 884 static int physical_transition_allowed(int old, int new)
 885 {
 886         if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX ||
 887             new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) {
 888                 pr_warn("invalid physical state(s) (old %d new %d)\n",
 889                         old, new);
 890                 return HFI_TRANSITION_UNDEFINED;
 891         }
 892
 893         if (new == IB_PORTPHYSSTATE_NOP)
 894                 return HFI_TRANSITION_ALLOWED; /* always allowed */
 895
 896         /* adjust states for indexing into physical_state_transitions */
 897         old -= IB_PORTPHYSSTATE_POLLING;
 898         new -= IB_PORTPHYSSTATE_POLLING;
 899
 900         if (old < 0 || new < 0)
 901                 return HFI_TRANSITION_UNDEFINED;
 902         return physical_state_transitions.allowed[old][new];
 903 }
 904
 905 static int port_states_transition_allowed(struct hfi1_pportdata *ppd,
 906                                           u32 logical_new, u32 physical_new)
 907 {
 908         u32 physical_old = driver_physical_state(ppd);
 909         u32 logical_old = driver_logical_state(ppd);
 910         int ret, logical_allowed, physical_allowed;
 911
 912         ret = logical_transition_allowed(logical_old, logical_new);
 913         logical_allowed = ret;
 914
 915         if (ret == HFI_TRANSITION_DISALLOWED ||
 916             ret == HFI_TRANSITION_UNDEFINED) {
 917                 pr_warn("invalid logical state transition %s -> %s\n",
 918                         opa_lstate_name(logical_old),
 919                         opa_lstate_name(logical_new));
 920                 return ret;
 921         }
 922
 923         ret = physical_transition_allowed(physical_old, physical_new);
 924         physical_allowed = ret;
 925
 926         if (ret == HFI_TRANSITION_DISALLOWED ||
 927             ret == HFI_TRANSITION_UNDEFINED) {
 928                 pr_warn("invalid physical state transition %s -> %s\n",
 929                         opa_pstate_name(physical_old),
 930                         opa_pstate_name(physical_new));
 931                 return ret;
 932         }
 933
 934         if (logical_allowed == HFI_TRANSITION_IGNORED &&
 935             physical_allowed == HFI_TRANSITION_IGNORED)
 936                 return HFI_TRANSITION_IGNORED;
 937
 938         /*
 939          * A change request of Physical Port State from
 940          * 'Offline' to 'Polling' should be ignored.
 941          */
 942         if ((physical_old == OPA_PORTPHYSSTATE_OFFLINE) &&
 943             (physical_new == IB_PORTPHYSSTATE_POLLING))
 944                 return HFI_TRANSITION_IGNORED;
 945
 946         /*
 947          * Either physical_allowed or logical_allowed is
 948          * HFI_TRANSITION_ALLOWED.
 949          */
 950         return HFI_TRANSITION_ALLOWED;
 951 }
 952
 953 static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp,
 954                            u32 logical_state, u32 phys_state,
 955                            int suppress_idle_sma)
 956 {
 957         struct hfi1_devdata *dd = ppd->dd;
 958         u32 link_state;
 959         int ret;
 960
 961         ret = port_states_transition_allowed(ppd, logical_state, phys_state);
 962         if (ret == HFI_TRANSITION_DISALLOWED ||
 963             ret == HFI_TRANSITION_UNDEFINED) {
 964                 /* error message emitted above */
 965                 smp->status |= IB_SMP_INVALID_FIELD;
 966                 return 0;
 967         }
 968
 969         if (ret == HFI_TRANSITION_IGNORED)
 970                 return 0;
 971
 972         if ((phys_state != IB_PORTPHYSSTATE_NOP) &&
 973             !(logical_state == IB_PORT_DOWN ||
 974               logical_state == IB_PORT_NOP)){
 975                 pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n",
 976                         logical_state, phys_state);
 977                 smp->status |= IB_SMP_INVALID_FIELD;
 978         }
 979
 980         /*
 981          * Logical state changes are summarized in OPAv1g1 spec.,
 982          * Table 9-12; physical state changes are summarized in
 983          * OPAv1g1 spec., Table 6.4.
 984          */
 985         switch (logical_state) {
 986         case IB_PORT_NOP:
 987                 if (phys_state == IB_PORTPHYSSTATE_NOP)
 988                         break;
 989                 /* FALLTHROUGH */
 990         case IB_PORT_DOWN:
 991                 if (phys_state == IB_PORTPHYSSTATE_NOP) {
 992                         link_state = HLS_DN_DOWNDEF;
 993                 } else if (phys_state == IB_PORTPHYSSTATE_POLLING) {
 994                         link_state = HLS_DN_POLL;
 995                         set_link_down_reason(ppd, OPA_LINKDOWN_REASON_FM_BOUNCE,
 996                                              0, OPA_LINKDOWN_REASON_FM_BOUNCE);
 997                 } else if (phys_state == IB_PORTPHYSSTATE_DISABLED) {
 998                         link_state = HLS_DN_DISABLE;
 999                 } else {
1000                         pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n",
1001                                 phys_state);
1002                         smp->status |= IB_SMP_INVALID_FIELD;
1003                         break;
1004                 }
1005
1006                 if ((link_state == HLS_DN_POLL ||
1007                      link_state == HLS_DN_DOWNDEF)) {
1008                         /*
1009                          * Going to poll.  No matter what the current state,
1010                          * always move offline first, then tune and start the
1011                          * link.  This correctly handles a FM link bounce and
1012                          * a link enable.  Going offline is a no-op if already
1013                          * offline.
1014                          */
1015                         set_link_state(ppd, HLS_DN_OFFLINE);
1016                         start_link(ppd);
1017                 } else {
1018                         set_link_state(ppd, link_state);
1019                 }
1020                 if (link_state == HLS_DN_DISABLE &&
1021                     (ppd->offline_disabled_reason >
1022                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
1023                      ppd->offline_disabled_reason ==
1024                      HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
1025                         ppd->offline_disabled_reason =
1026                         HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
1027                 /*
1028                  * Don't send a reply if the response would be sent
1029                  * through the disabled port.
1030                  */
1031                 if (link_state == HLS_DN_DISABLE && smp->hop_cnt)
1032                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
1033                 break;
1034         case IB_PORT_ARMED:
1035                 ret = set_link_state(ppd, HLS_UP_ARMED);
1036                 if ((ret == 0) && (suppress_idle_sma == 0))
1037                         send_idle_sma(dd, SMA_IDLE_ARM);
1038                 break;
1039         case IB_PORT_ACTIVE:
1040                 if (ppd->neighbor_normal) {
1041                         ret = set_link_state(ppd, HLS_UP_ACTIVE);
1042                         if (ret == 0)
1043                                 send_idle_sma(dd, SMA_IDLE_ACTIVE);
1044                 } else {
1045                         pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
1046                         smp->status |= IB_SMP_INVALID_FIELD;
1047                 }
1048                 break;
1049         default:
1050                 pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
1051                         logical_state);
1052                 smp->status |= IB_SMP_INVALID_FIELD;
1053         }
1054
1055         return 0;
1056 }
1057
1058 /**
1059  * subn_set_opa_portinfo - set port information
1060  * @smp: the incoming SM packet
1061  * @ibdev: the infiniband device
1062  * @port: the port on the device
1063  *
1064  */
1065 static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
1066                                    struct ib_device *ibdev, u8 port,
1067                                    u32 *resp_len)
1068 {
1069         struct opa_port_info *pi = (struct opa_port_info *)data;
1070         struct ib_event event;
1071         struct hfi1_devdata *dd;
1072         struct hfi1_pportdata *ppd;
1073         struct hfi1_ibport *ibp;
1074         u8 clientrereg;
1075         unsigned long flags;
1076         u32 smlid, opa_lid; /* tmp vars to hold LID values */
1077         u16 lid;
1078         u8 ls_old, ls_new, ps_new;
1079         u8 vls;
1080         u8 msl;
1081         u8 crc_enabled;
1082         u16 lse, lwe, mtu;
1083         u32 num_ports = OPA_AM_NPORT(am);
1084         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1085         int ret, i, invalid = 0, call_set_mtu = 0;
1086         int call_link_downgrade_policy = 0;
1087
1088         if (num_ports != 1) {
1089                 smp->status |= IB_SMP_INVALID_FIELD;
1090                 return reply((struct ib_mad_hdr *)smp);
1091         }
1092
1093         opa_lid = be32_to_cpu(pi->lid);
1094         if (opa_lid & 0xFFFF0000) {
1095                 pr_warn("OPA_PortInfo lid out of range: %X\n", opa_lid);
1096                 smp->status |= IB_SMP_INVALID_FIELD;
1097                 goto get_only;
1098         }
1099
1100         lid = (u16)(opa_lid & 0x0000FFFF);
1101
1102         smlid = be32_to_cpu(pi->sm_lid);
1103         if (smlid & 0xFFFF0000) {
1104                 pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid);
1105                 smp->status |= IB_SMP_INVALID_FIELD;
1106                 goto get_only;
1107         }
1108         smlid &= 0x0000FFFF;
1109
1110         clientrereg = (pi->clientrereg_subnettimeout &
1111                         OPA_PI_MASK_CLIENT_REREGISTER);
1112
1113         dd = dd_from_ibdev(ibdev);
1114         /* IB numbers ports from 1, hw from 0 */
1115         ppd = dd->pport + (port - 1);
1116         ibp = &ppd->ibport_data;
1117         event.device = ibdev;
1118         event.element.port_num = port;
1119
1120         ls_old = driver_lstate(ppd);
1121
1122         ibp->rvp.mkey = pi->mkey;
1123         ibp->rvp.gid_prefix = pi->subnet_prefix;
1124         ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
1125
1126         /* Must be a valid unicast LID address. */
1127         if ((lid == 0 && ls_old > IB_PORT_INIT) ||
1128             lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
1129                 smp->status |= IB_SMP_INVALID_FIELD;
1130                 pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n",
1131                         lid);
1132         } else if (ppd->lid != lid ||
1133                  ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) {
1134                 if (ppd->lid != lid)
1135                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT);
1136                 if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
1137                         hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT);
1138                 hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
1139                 event.event = IB_EVENT_LID_CHANGE;
1140                 ib_dispatch_event(&event);
1141         }
1142
1143         msl = pi->smsl & OPA_PI_MASK_SMSL;
1144         if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON)
1145                 ppd->linkinit_reason =
1146                         (pi->partenforce_filterraw &
1147                          OPA_PI_MASK_LINKINIT_REASON);
1148         /* enable/disable SW pkey checking as per FM control */
1149         if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_IN)
1150                 ppd->part_enforce |= HFI1_PART_ENFORCE_IN;
1151         else
1152                 ppd->part_enforce &= ~HFI1_PART_ENFORCE_IN;
1153
1154         if (pi->partenforce_filterraw & OPA_PI_MASK_PARTITION_ENFORCE_OUT)
1155                 ppd->part_enforce |= HFI1_PART_ENFORCE_OUT;
1156         else
1157                 ppd->part_enforce &= ~HFI1_PART_ENFORCE_OUT;
1158
1159         /* Must be a valid unicast LID address. */
1160         if ((smlid == 0 && ls_old > IB_PORT_INIT) ||
1161             smlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) {
1162                 smp->status |= IB_SMP_INVALID_FIELD;
1163                 pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
1164         } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
1165                 pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid);
1166                 spin_lock_irqsave(&ibp->rvp.lock, flags);
1167                 if (ibp->rvp.sm_ah) {
1168                         if (smlid != ibp->rvp.sm_lid)
1169                                 ibp->rvp.sm_ah->attr.dlid = smlid;
1170                         if (msl != ibp->rvp.sm_sl)
1171                                 ibp->rvp.sm_ah->attr.sl = msl;
1172                 }
1173                 spin_unlock_irqrestore(&ibp->rvp.lock, flags);
1174                 if (smlid != ibp->rvp.sm_lid)
1175                         ibp->rvp.sm_lid = smlid;
1176                 if (msl != ibp->rvp.sm_sl)
1177                         ibp->rvp.sm_sl = msl;
1178                 event.event = IB_EVENT_SM_CHANGE;
1179                 ib_dispatch_event(&event);
1180         }
1181
1182         if (pi->link_down_reason == 0) {
1183                 ppd->local_link_down_reason.sma = 0;
1184                 ppd->local_link_down_reason.latest = 0;
1185         }
1186
1187         if (pi->neigh_link_down_reason == 0) {
1188                 ppd->neigh_link_down_reason.sma = 0;
1189                 ppd->neigh_link_down_reason.latest = 0;
1190         }
1191
1192         ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp);
1193         ppd->sa_qp = be32_to_cpu(pi->sa_qp);
1194
1195         ppd->port_error_action = be32_to_cpu(pi->port_error_action);
1196         lwe = be16_to_cpu(pi->link_width.enabled);
1197         if (lwe) {
1198                 if (lwe == OPA_LINK_WIDTH_RESET ||
1199                     lwe == OPA_LINK_WIDTH_RESET_OLD)
1200                         set_link_width_enabled(ppd, ppd->link_width_supported);
1201                 else if ((lwe & ~ppd->link_width_supported) == 0)
1202                         set_link_width_enabled(ppd, lwe);
1203                 else
1204                         smp->status |= IB_SMP_INVALID_FIELD;
1205         }
1206         lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
1207         /* LWD.E is always applied - 0 means "disabled" */
1208         if (lwe == OPA_LINK_WIDTH_RESET ||
1209             lwe == OPA_LINK_WIDTH_RESET_OLD) {
1210                 set_link_width_downgrade_enabled(ppd,
1211                                                  ppd->
1212                                                  link_width_downgrade_supported
1213                                                  );
1214         } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) {
1215                 /* only set and apply if something changed */
1216                 if (lwe != ppd->link_width_downgrade_enabled) {
1217                         set_link_width_downgrade_enabled(ppd, lwe);
1218                         call_link_downgrade_policy = 1;
1219                 }
1220         } else {
1221                 smp->status |= IB_SMP_INVALID_FIELD;
1222         }
1223         lse = be16_to_cpu(pi->link_speed.enabled);
1224         if (lse) {
1225                 if (lse & be16_to_cpu(pi->link_speed.supported))
1226                         set_link_speed_enabled(ppd, lse);
1227                 else
1228                         smp->status |= IB_SMP_INVALID_FIELD;
1229         }
1230
1231         ibp->rvp.mkeyprot =
1232                 (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6;
1233         ibp->rvp.vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF;
1234         (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT,
1235                                     ibp->rvp.vl_high_limit);
1236
1237         if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) ||
1238             ppd->vls_supported > ARRAY_SIZE(dd->vld)) {
1239                 smp->status |= IB_SMP_INVALID_FIELD;
1240                 return reply((struct ib_mad_hdr *)smp);
1241         }
1242         for (i = 0; i < ppd->vls_supported; i++) {
1243                 if ((i % 2) == 0)
1244                         mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i / 2] >>
1245                                            4) & 0xF);
1246                 else
1247                         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i / 2] &
1248                                           0xF);
1249                 if (mtu == 0xffff) {
1250                         pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n",
1251                                 mtu,
1252                                 (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
1253                         smp->status |= IB_SMP_INVALID_FIELD;
1254                         mtu = hfi1_max_mtu; /* use a valid MTU */
1255                 }
1256                 if (dd->vld[i].mtu != mtu) {
1257                         dd_dev_info(dd,
1258                                     "MTU change on vl %d from %d to %d\n",
1259                                     i, dd->vld[i].mtu, mtu);
1260                         dd->vld[i].mtu = mtu;
1261                         call_set_mtu++;
1262                 }
1263         }
1264         /* As per OPAV1 spec: VL15 must support and be configured
1265          * for operation with a 2048 or larger MTU.
1266          */
1267         mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15 / 2] & 0xF);
1268         if (mtu < 2048 || mtu == 0xffff)
1269                 mtu = 2048;
1270         if (dd->vld[15].mtu != mtu) {
1271                 dd_dev_info(dd,
1272                             "MTU change on vl 15 from %d to %d\n",
1273                             dd->vld[15].mtu, mtu);
1274                 dd->vld[15].mtu = mtu;
1275                 call_set_mtu++;
1276         }
1277         if (call_set_mtu)
1278                 set_mtu(ppd);
1279
1280         /* Set operational VLs */
1281         vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
1282         if (vls) {
1283                 if (vls > ppd->vls_supported) {
1284                         pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
1285                                 pi->operational_vls);
1286                         smp->status |= IB_SMP_INVALID_FIELD;
1287                 } else {
1288                         if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS,
1289                                             vls) == -EINVAL)
1290                                 smp->status |= IB_SMP_INVALID_FIELD;
1291                 }
1292         }
1293
1294         if (pi->mkey_violations == 0)
1295                 ibp->rvp.mkey_violations = 0;
1296
1297         if (pi->pkey_violations == 0)
1298                 ibp->rvp.pkey_violations = 0;
1299
1300         if (pi->qkey_violations == 0)
1301                 ibp->rvp.qkey_violations = 0;
1302
1303         ibp->rvp.subnet_timeout =
1304                 pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT;
1305
1306         crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode);
1307         crc_enabled >>= 4;
1308         crc_enabled &= 0xf;
1309
1310         if (crc_enabled != 0)
1311                 ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled);
1312
1313         ppd->is_active_optimize_enabled =
1314                         !!(be16_to_cpu(pi->port_mode)
1315                                         & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE);
1316
1317         ls_new = pi->port_states.portphysstate_portstate &
1318                         OPA_PI_MASK_PORT_STATE;
1319         ps_new = (pi->port_states.portphysstate_portstate &
1320                         OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4;
1321
1322         if (ls_old == IB_PORT_INIT) {
1323                 if (start_of_sm_config) {
1324                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1325                                 ppd->is_sm_config_started = 1;
1326                 } else if (ls_new == IB_PORT_ARMED) {
1327                         if (ppd->is_sm_config_started == 0)
1328                                 invalid = 1;
1329                 }
1330         }
1331
1332         /* Handle CLIENT_REREGISTER event b/c SM asked us for it */
1333         if (clientrereg) {
1334                 event.event = IB_EVENT_CLIENT_REREGISTER;
1335                 ib_dispatch_event(&event);
1336         }
1337
1338         /*
1339          * Do the port state change now that the other link parameters
1340          * have been set.
1341          * Changing the port physical state only makes sense if the link
1342          * is down or is being set to down.
1343          */
1344
1345         ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1346         if (ret)
1347                 return ret;
1348
1349         ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1350
1351         /* restore re-reg bit per o14-12.2.1 */
1352         pi->clientrereg_subnettimeout |= clientrereg;
1353
1354         /*
1355          * Apply the new link downgrade policy.  This may result in a link
1356          * bounce.  Do this after everything else so things are settled.
1357          * Possible problem: if setting the port state above fails, then
1358          * the policy change is not applied.
1359          */
1360         if (call_link_downgrade_policy)
1361                 apply_link_downgrade_policy(ppd, 0);
1362
1363         return ret;
1364
1365 get_only:
1366         return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len);
1367 }
1368
1369 /**
1370  * set_pkeys - set the PKEY table for ctxt 0
1371  * @dd: the hfi1_ib device
1372  * @port: the IB port number
1373  * @pkeys: the PKEY table
1374  */
1375 static int set_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys)
1376 {
1377         struct hfi1_pportdata *ppd;
1378         int i;
1379         int changed = 0;
1380         int update_includes_mgmt_partition = 0;
1381
1382         /*
1383          * IB port one/two always maps to context zero/one,
1384          * always a kernel context, no locking needed
1385          * If we get here with ppd setup, no need to check
1386          * that rcd is valid.
1387          */
1388         ppd = dd->pport + (port - 1);
1389         /*
1390          * If the update does not include the management pkey, don't do it.
1391          */
1392         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1393                 if (pkeys[i] == LIM_MGMT_P_KEY) {
1394                         update_includes_mgmt_partition = 1;
1395                         break;
1396                 }
1397         }
1398
1399         if (!update_includes_mgmt_partition)
1400                 return 1;
1401
1402         for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
1403                 u16 key = pkeys[i];
1404                 u16 okey = ppd->pkeys[i];
1405
1406                 if (key == okey)
1407                         continue;
1408                 /*
1409                  * The SM gives us the complete PKey table. We have
1410                  * to ensure that we put the PKeys in the matching
1411                  * slots.
1412                  */
1413                 ppd->pkeys[i] = key;
1414                 changed = 1;
1415         }
1416
1417         if (changed) {
1418                 (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0);
1419                 hfi1_event_pkey_change(dd, port);
1420         }
1421
1422         return 0;
1423 }
1424
1425 static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
1426                                     struct ib_device *ibdev, u8 port,
1427                                     u32 *resp_len)
1428 {
1429         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1430         u32 n_blocks_sent = OPA_AM_NBLK(am);
1431         u32 start_block = am & 0x7ff;
1432         u16 *p = (u16 *)data;
1433         __be16 *q = (__be16 *)data;
1434         int i;
1435         u16 n_blocks_avail;
1436         unsigned npkeys = hfi1_get_npkeys(dd);
1437
1438         if (n_blocks_sent == 0) {
1439                 pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n",
1440                         port, start_block, n_blocks_sent);
1441                 smp->status |= IB_SMP_INVALID_FIELD;
1442                 return reply((struct ib_mad_hdr *)smp);
1443         }
1444
1445         n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1;
1446
1447         if (start_block + n_blocks_sent > n_blocks_avail ||
1448             n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) {
1449                 pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n",
1450                         start_block, n_blocks_sent, n_blocks_avail,
1451                         OPA_NUM_PKEY_BLOCKS_PER_SMP);
1452                 smp->status |= IB_SMP_INVALID_FIELD;
1453                 return reply((struct ib_mad_hdr *)smp);
1454         }
1455
1456         for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++)
1457                 p[i] = be16_to_cpu(q[i]);
1458
1459         if (start_block == 0 && set_pkeys(dd, port, p) != 0) {
1460                 smp->status |= IB_SMP_INVALID_FIELD;
1461                 return reply((struct ib_mad_hdr *)smp);
1462         }
1463
1464         return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len);
1465 }
1466
1467 static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1468 {
1469         u64 *val = data;
1470
1471         *val++ = read_csr(dd, SEND_SC2VLT0);
1472         *val++ = read_csr(dd, SEND_SC2VLT1);
1473         *val++ = read_csr(dd, SEND_SC2VLT2);
1474         *val++ = read_csr(dd, SEND_SC2VLT3);
1475         return 0;
1476 }
1477
1478 #define ILLEGAL_VL 12
1479 /*
1480  * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except
1481  * for SC15, which must map to VL15). If we don't remap things this
1482  * way it is possible for VL15 counters to increment when we try to
1483  * send on a SC which is mapped to an invalid VL.
1484  */
1485 static void filter_sc2vlt(void *data)
1486 {
1487         int i;
1488         u8 *pd = data;
1489
1490         for (i = 0; i < OPA_MAX_SCS; i++) {
1491                 if (i == 15)
1492                         continue;
1493                 if ((pd[i] & 0x1f) == 0xf)
1494                         pd[i] = ILLEGAL_VL;
1495         }
1496 }
1497
1498 static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data)
1499 {
1500         u64 *val = data;
1501
1502         filter_sc2vlt(data);
1503
1504         write_csr(dd, SEND_SC2VLT0, *val++);
1505         write_csr(dd, SEND_SC2VLT1, *val++);
1506         write_csr(dd, SEND_SC2VLT2, *val++);
1507         write_csr(dd, SEND_SC2VLT3, *val++);
1508         write_seqlock_irq(&dd->sc2vl_lock);
1509         memcpy(dd->sc2vl, data, sizeof(dd->sc2vl));
1510         write_sequnlock_irq(&dd->sc2vl_lock);
1511         return 0;
1512 }
1513
1514 static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1515                                    struct ib_device *ibdev, u8 port,
1516                                    u32 *resp_len)
1517 {
1518         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1519         u8 *p = data;
1520         size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */
1521         unsigned i;
1522
1523         if (am) {
1524                 smp->status |= IB_SMP_INVALID_FIELD;
1525                 return reply((struct ib_mad_hdr *)smp);
1526         }
1527
1528         for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
1529                 *p++ = ibp->sl_to_sc[i];
1530
1531         if (resp_len)
1532                 *resp_len += size;
1533
1534         return reply((struct ib_mad_hdr *)smp);
1535 }
1536
1537 static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data,
1538                                    struct ib_device *ibdev, u8 port,
1539                                    u32 *resp_len)
1540 {
1541         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1542         u8 *p = data;
1543         int i;
1544         u8 sc;
1545
1546         if (am) {
1547                 smp->status |= IB_SMP_INVALID_FIELD;
1548                 return reply((struct ib_mad_hdr *)smp);
1549         }
1550
1551         for (i = 0; i <  ARRAY_SIZE(ibp->sl_to_sc); i++) {
1552                 sc = *p++;
1553                 if (ibp->sl_to_sc[i] != sc) {
1554                         ibp->sl_to_sc[i] = sc;
1555
1556                         /* Put all stale qps into error state */
1557                         hfi1_error_port_qps(ibp, i);
1558                 }
1559         }
1560
1561         return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len);
1562 }
1563
1564 static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1565                                    struct ib_device *ibdev, u8 port,
1566                                    u32 *resp_len)
1567 {
1568         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1569         u8 *p = data;
1570         size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */
1571         unsigned i;
1572
1573         if (am) {
1574                 smp->status |= IB_SMP_INVALID_FIELD;
1575                 return reply((struct ib_mad_hdr *)smp);
1576         }
1577
1578         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1579                 *p++ = ibp->sc_to_sl[i];
1580
1581         if (resp_len)
1582                 *resp_len += size;
1583
1584         return reply((struct ib_mad_hdr *)smp);
1585 }
1586
1587 static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data,
1588                                    struct ib_device *ibdev, u8 port,
1589                                    u32 *resp_len)
1590 {
1591         struct hfi1_ibport *ibp = to_iport(ibdev, port);
1592         u8 *p = data;
1593         int i;
1594
1595         if (am) {
1596                 smp->status |= IB_SMP_INVALID_FIELD;
1597                 return reply((struct ib_mad_hdr *)smp);
1598         }
1599
1600         for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
1601                 ibp->sc_to_sl[i] = *p++;
1602
1603         return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len);
1604 }
1605
1606 static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1607                                     struct ib_device *ibdev, u8 port,
1608                                     u32 *resp_len)
1609 {
1610         u32 n_blocks = OPA_AM_NBLK(am);
1611         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1612         void *vp = (void *)data;
1613         size_t size = 4 * sizeof(u64);
1614
1615         if (n_blocks != 1) {
1616                 smp->status |= IB_SMP_INVALID_FIELD;
1617                 return reply((struct ib_mad_hdr *)smp);
1618         }
1619
1620         get_sc2vlt_tables(dd, vp);
1621
1622         if (resp_len)
1623                 *resp_len += size;
1624
1625         return reply((struct ib_mad_hdr *)smp);
1626 }
1627
1628 static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data,
1629                                     struct ib_device *ibdev, u8 port,
1630                                     u32 *resp_len)
1631 {
1632         u32 n_blocks = OPA_AM_NBLK(am);
1633         int async_update = OPA_AM_ASYNC(am);
1634         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1635         void *vp = (void *)data;
1636         struct hfi1_pportdata *ppd;
1637         int lstate;
1638
1639         if (n_blocks != 1 || async_update) {
1640                 smp->status |= IB_SMP_INVALID_FIELD;
1641                 return reply((struct ib_mad_hdr *)smp);
1642         }
1643
1644         /* IB numbers ports from 1, hw from 0 */
1645         ppd = dd->pport + (port - 1);
1646         lstate = driver_lstate(ppd);
1647         /*
1648          * it's known that async_update is 0 by this point, but include
1649          * the explicit check for clarity
1650          */
1651         if (!async_update &&
1652             (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) {
1653                 smp->status |= IB_SMP_INVALID_FIELD;
1654                 return reply((struct ib_mad_hdr *)smp);
1655         }
1656
1657         set_sc2vlt_tables(dd, vp);
1658
1659         return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len);
1660 }
1661
1662 static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1663                                      struct ib_device *ibdev, u8 port,
1664                                      u32 *resp_len)
1665 {
1666         u32 n_blocks = OPA_AM_NPORT(am);
1667         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1668         struct hfi1_pportdata *ppd;
1669         void *vp = (void *)data;
1670         int size;
1671
1672         if (n_blocks != 1) {
1673                 smp->status |= IB_SMP_INVALID_FIELD;
1674                 return reply((struct ib_mad_hdr *)smp);
1675         }
1676
1677         ppd = dd->pport + (port - 1);
1678
1679         size = fm_get_table(ppd, FM_TBL_SC2VLNT, vp);
1680
1681         if (resp_len)
1682                 *resp_len += size;
1683
1684         return reply((struct ib_mad_hdr *)smp);
1685 }
1686
1687 static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data,
1688                                      struct ib_device *ibdev, u8 port,
1689                                      u32 *resp_len)
1690 {
1691         u32 n_blocks = OPA_AM_NPORT(am);
1692         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1693         struct hfi1_pportdata *ppd;
1694         void *vp = (void *)data;
1695         int lstate;
1696
1697         if (n_blocks != 1) {
1698                 smp->status |= IB_SMP_INVALID_FIELD;
1699                 return reply((struct ib_mad_hdr *)smp);
1700         }
1701
1702         /* IB numbers ports from 1, hw from 0 */
1703         ppd = dd->pport + (port - 1);
1704         lstate = driver_lstate(ppd);
1705         if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) {
1706                 smp->status |= IB_SMP_INVALID_FIELD;
1707                 return reply((struct ib_mad_hdr *)smp);
1708         }
1709
1710         ppd = dd->pport + (port - 1);
1711
1712         fm_set_table(ppd, FM_TBL_SC2VLNT, vp);
1713
1714         return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
1715                                          resp_len);
1716 }
1717
1718 static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1719                               struct ib_device *ibdev, u8 port,
1720                               u32 *resp_len)
1721 {
1722         u32 nports = OPA_AM_NPORT(am);
1723         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1724         u32 lstate;
1725         struct hfi1_ibport *ibp;
1726         struct hfi1_pportdata *ppd;
1727         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
1728
1729         if (nports != 1) {
1730                 smp->status |= IB_SMP_INVALID_FIELD;
1731                 return reply((struct ib_mad_hdr *)smp);
1732         }
1733
1734         ibp = to_iport(ibdev, port);
1735         ppd = ppd_from_ibp(ibp);
1736
1737         lstate = driver_lstate(ppd);
1738
1739         if (start_of_sm_config && (lstate == IB_PORT_INIT))
1740                 ppd->is_sm_config_started = 1;
1741
1742         psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4;
1743         psi->port_states.ledenable_offlinereason |=
1744                 ppd->is_sm_config_started << 5;
1745         psi->port_states.ledenable_offlinereason |=
1746                 ppd->offline_disabled_reason;
1747
1748         psi->port_states.portphysstate_portstate =
1749                 (hfi1_ibphys_portstate(ppd) << 4) | (lstate & 0xf);
1750         psi->link_width_downgrade_tx_active =
1751                 cpu_to_be16(ppd->link_width_downgrade_tx_active);
1752         psi->link_width_downgrade_rx_active =
1753                 cpu_to_be16(ppd->link_width_downgrade_rx_active);
1754         if (resp_len)
1755                 *resp_len += sizeof(struct opa_port_state_info);
1756
1757         return reply((struct ib_mad_hdr *)smp);
1758 }
1759
1760 static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data,
1761                               struct ib_device *ibdev, u8 port,
1762                               u32 *resp_len)
1763 {
1764         u32 nports = OPA_AM_NPORT(am);
1765         u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
1766         u32 ls_old;
1767         u8 ls_new, ps_new;
1768         struct hfi1_ibport *ibp;
1769         struct hfi1_pportdata *ppd;
1770         struct opa_port_state_info *psi = (struct opa_port_state_info *)data;
1771         int ret, invalid = 0;
1772
1773         if (nports != 1) {
1774                 smp->status |= IB_SMP_INVALID_FIELD;
1775                 return reply((struct ib_mad_hdr *)smp);
1776         }
1777
1778         ibp = to_iport(ibdev, port);
1779         ppd = ppd_from_ibp(ibp);
1780
1781         ls_old = driver_lstate(ppd);
1782
1783         ls_new = port_states_to_logical_state(&psi->port_states);
1784         ps_new = port_states_to_phys_state(&psi->port_states);
1785
1786         if (ls_old == IB_PORT_INIT) {
1787                 if (start_of_sm_config) {
1788                         if (ls_new == ls_old || (ls_new == IB_PORT_ARMED))
1789                                 ppd->is_sm_config_started = 1;
1790                 } else if (ls_new == IB_PORT_ARMED) {
1791                         if (ppd->is_sm_config_started == 0)
1792                                 invalid = 1;
1793                 }
1794         }
1795
1796         ret = set_port_states(ppd, smp, ls_new, ps_new, invalid);
1797         if (ret)
1798                 return ret;
1799
1800         if (invalid)
1801                 smp->status |= IB_SMP_INVALID_FIELD;
1802
1803         return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len);
1804 }
1805
1806 static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data,
1807                                      struct ib_device *ibdev, u8 port,
1808                                      u32 *resp_len)
1809 {
1810         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1811         u32 addr = OPA_AM_CI_ADDR(am);
1812         u32 len = OPA_AM_CI_LEN(am) + 1;
1813         int ret;
1814
1815         if (dd->pport->port_type != PORT_TYPE_QSFP) {
1816                 smp->status |= IB_SMP_INVALID_FIELD;
1817                 return reply((struct ib_mad_hdr *)smp);
1818         }
1819
1820 #define __CI_PAGE_SIZE BIT(7) /* 128 bytes */
1821 #define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1)
1822 #define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK)
1823
1824         /*
1825          * check that addr is within spec, and
1826          * addr and (addr + len - 1) are on the same "page"
1827          */
1828         if (addr >= 4096 ||
1829             (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) {
1830                 smp->status |= IB_SMP_INVALID_FIELD;
1831                 return reply((struct ib_mad_hdr *)smp);
1832         }
1833
1834         ret = get_cable_info(dd, port, addr, len, data);
1835
1836         if (ret == -ENODEV) {
1837                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1838                 return reply((struct ib_mad_hdr *)smp);
1839         }
1840
1841         /* The address range for the CableInfo SMA query is wider than the
1842          * memory available on the QSFP cable. We want to return a valid
1843          * response, albeit zeroed out, for address ranges beyond available
1844          * memory but that are within the CableInfo query spec
1845          */
1846         if (ret < 0 && ret != -ERANGE) {
1847                 smp->status |= IB_SMP_INVALID_FIELD;
1848                 return reply((struct ib_mad_hdr *)smp);
1849         }
1850
1851         if (resp_len)
1852                 *resp_len += len;
1853
1854         return reply((struct ib_mad_hdr *)smp);
1855 }
1856
1857 static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1858                               struct ib_device *ibdev, u8 port, u32 *resp_len)
1859 {
1860         u32 num_ports = OPA_AM_NPORT(am);
1861         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1862         struct hfi1_pportdata *ppd;
1863         struct buffer_control *p = (struct buffer_control *)data;
1864         int size;
1865
1866         if (num_ports != 1) {
1867                 smp->status |= IB_SMP_INVALID_FIELD;
1868                 return reply((struct ib_mad_hdr *)smp);
1869         }
1870
1871         ppd = dd->pport + (port - 1);
1872         size = fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p);
1873         trace_bct_get(dd, p);
1874         if (resp_len)
1875                 *resp_len += size;
1876
1877         return reply((struct ib_mad_hdr *)smp);
1878 }
1879
1880 static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data,
1881                               struct ib_device *ibdev, u8 port, u32 *resp_len)
1882 {
1883         u32 num_ports = OPA_AM_NPORT(am);
1884         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
1885         struct hfi1_pportdata *ppd;
1886         struct buffer_control *p = (struct buffer_control *)data;
1887
1888         if (num_ports != 1) {
1889                 smp->status |= IB_SMP_INVALID_FIELD;
1890                 return reply((struct ib_mad_hdr *)smp);
1891         }
1892         ppd = dd->pport + (port - 1);
1893         trace_bct_set(dd, p);
1894         if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) {
1895                 smp->status |= IB_SMP_INVALID_FIELD;
1896                 return reply((struct ib_mad_hdr *)smp);
1897         }
1898
1899         return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len);
1900 }
1901
1902 static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1903                                  struct ib_device *ibdev, u8 port,
1904                                  u32 *resp_len)
1905 {
1906         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1907         u32 num_ports = OPA_AM_NPORT(am);
1908         u8 section = (am & 0x00ff0000) >> 16;
1909         u8 *p = data;
1910         int size = 0;
1911
1912         if (num_ports != 1) {
1913                 smp->status |= IB_SMP_INVALID_FIELD;
1914                 return reply((struct ib_mad_hdr *)smp);
1915         }
1916
1917         switch (section) {
1918         case OPA_VLARB_LOW_ELEMENTS:
1919                 size = fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p);
1920                 break;
1921         case OPA_VLARB_HIGH_ELEMENTS:
1922                 size = fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1923                 break;
1924         case OPA_VLARB_PREEMPT_ELEMENTS:
1925                 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p);
1926                 break;
1927         case OPA_VLARB_PREEMPT_MATRIX:
1928                 size = fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p);
1929                 break;
1930         default:
1931                 pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n",
1932                         be32_to_cpu(smp->attr_mod));
1933                 smp->status |= IB_SMP_INVALID_FIELD;
1934                 break;
1935         }
1936
1937         if (size > 0 && resp_len)
1938                 *resp_len += size;
1939
1940         return reply((struct ib_mad_hdr *)smp);
1941 }
1942
1943 static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data,
1944                                  struct ib_device *ibdev, u8 port,
1945                                  u32 *resp_len)
1946 {
1947         struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port));
1948         u32 num_ports = OPA_AM_NPORT(am);
1949         u8 section = (am & 0x00ff0000) >> 16;
1950         u8 *p = data;
1951
1952         if (num_ports != 1) {
1953                 smp->status |= IB_SMP_INVALID_FIELD;
1954                 return reply((struct ib_mad_hdr *)smp);
1955         }
1956
1957         switch (section) {
1958         case OPA_VLARB_LOW_ELEMENTS:
1959                 (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
1960                 break;
1961         case OPA_VLARB_HIGH_ELEMENTS:
1962                 (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
1963                 break;
1964         /*
1965          * neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX
1966          * can be changed from the default values
1967          */
1968         case OPA_VLARB_PREEMPT_ELEMENTS:
1969                 /* FALLTHROUGH */
1970         case OPA_VLARB_PREEMPT_MATRIX:
1971                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
1972                 break;
1973         default:
1974                 pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n",
1975                         be32_to_cpu(smp->attr_mod));
1976                 smp->status |= IB_SMP_INVALID_FIELD;
1977                 break;
1978         }
1979
1980         return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len);
1981 }
1982
1983 struct opa_pma_mad {
1984         struct ib_mad_hdr mad_hdr;
1985         u8 data[2024];
1986 } __packed;
1987
1988 struct opa_class_port_info {
1989         u8 base_version;
1990         u8 class_version;
1991         __be16 cap_mask;
1992         __be32 cap_mask2_resp_time;
1993
1994         u8 redirect_gid[16];
1995         __be32 redirect_tc_fl;
1996         __be32 redirect_lid;
1997         __be32 redirect_sl_qp;
1998         __be32 redirect_qkey;
1999
2000         u8 trap_gid[16];
2001         __be32 trap_tc_fl;
2002         __be32 trap_lid;
2003         __be32 trap_hl_qp;
2004         __be32 trap_qkey;
2005
2006         __be16 trap_pkey;
2007         __be16 redirect_pkey;
2008
2009         u8 trap_sl_rsvd;
2010         u8 reserved[3];
2011 } __packed;
2012
2013 struct opa_port_status_req {
2014         __u8 port_num;
2015         __u8 reserved[3];
2016         __be32 vl_select_mask;
2017 };
2018
2019 #define VL_MASK_ALL             0x00000000000080ffUL
2020
2021 struct opa_port_status_rsp {
2022         __u8 port_num;
2023         __u8 reserved[3];
2024         __be32  vl_select_mask;
2025
2026         /* Data counters */
2027         __be64 port_xmit_data;
2028         __be64 port_rcv_data;
2029         __be64 port_xmit_pkts;
2030         __be64 port_rcv_pkts;
2031         __be64 port_multicast_xmit_pkts;
2032         __be64 port_multicast_rcv_pkts;
2033         __be64 port_xmit_wait;
2034         __be64 sw_port_congestion;
2035         __be64 port_rcv_fecn;
2036         __be64 port_rcv_becn;
2037         __be64 port_xmit_time_cong;
2038         __be64 port_xmit_wasted_bw;
2039         __be64 port_xmit_wait_data;
2040         __be64 port_rcv_bubble;
2041         __be64 port_mark_fecn;
2042         /* Error counters */
2043         __be64 port_rcv_constraint_errors;
2044         __be64 port_rcv_switch_relay_errors;
2045         __be64 port_xmit_discards;
2046         __be64 port_xmit_constraint_errors;
2047         __be64 port_rcv_remote_physical_errors;
2048         __be64 local_link_integrity_errors;
2049         __be64 port_rcv_errors;
2050         __be64 excessive_buffer_overruns;
2051         __be64 fm_config_errors;
2052         __be32 link_error_recovery;
2053         __be32 link_downed;
2054         u8 uncorrectable_errors;
2055
2056         u8 link_quality_indicator; /* 5res, 3bit */
2057         u8 res2[6];
2058         struct _vls_pctrs {
2059                 /* per-VL Data counters */
2060                 __be64 port_vl_xmit_data;
2061                 __be64 port_vl_rcv_data;
2062                 __be64 port_vl_xmit_pkts;
2063                 __be64 port_vl_rcv_pkts;
2064                 __be64 port_vl_xmit_wait;
2065                 __be64 sw_port_vl_congestion;
2066                 __be64 port_vl_rcv_fecn;
2067                 __be64 port_vl_rcv_becn;
2068                 __be64 port_xmit_time_cong;
2069                 __be64 port_vl_xmit_wasted_bw;
2070                 __be64 port_vl_xmit_wait_data;
2071                 __be64 port_vl_rcv_bubble;
2072                 __be64 port_vl_mark_fecn;
2073                 __be64 port_vl_xmit_discards;
2074         } vls[0]; /* real array size defined by # bits set in vl_select_mask */
2075 };
2076
2077 enum counter_selects {
2078         CS_PORT_XMIT_DATA                       = (1 << 31),
2079         CS_PORT_RCV_DATA                        = (1 << 30),
2080         CS_PORT_XMIT_PKTS                       = (1 << 29),
2081         CS_PORT_RCV_PKTS                        = (1 << 28),
2082         CS_PORT_MCAST_XMIT_PKTS                 = (1 << 27),
2083         CS_PORT_MCAST_RCV_PKTS                  = (1 << 26),
2084         CS_PORT_XMIT_WAIT                       = (1 << 25),
2085         CS_SW_PORT_CONGESTION                   = (1 << 24),
2086         CS_PORT_RCV_FECN                        = (1 << 23),
2087         CS_PORT_RCV_BECN                        = (1 << 22),
2088         CS_PORT_XMIT_TIME_CONG                  = (1 << 21),
2089         CS_PORT_XMIT_WASTED_BW                  = (1 << 20),
2090         CS_PORT_XMIT_WAIT_DATA                  = (1 << 19),
2091         CS_PORT_RCV_BUBBLE                      = (1 << 18),
2092         CS_PORT_MARK_FECN                       = (1 << 17),
2093         CS_PORT_RCV_CONSTRAINT_ERRORS           = (1 << 16),
2094         CS_PORT_RCV_SWITCH_RELAY_ERRORS         = (1 << 15),
2095         CS_PORT_XMIT_DISCARDS                   = (1 << 14),
2096         CS_PORT_XMIT_CONSTRAINT_ERRORS          = (1 << 13),
2097         CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS      = (1 << 12),
2098         CS_LOCAL_LINK_INTEGRITY_ERRORS          = (1 << 11),
2099         CS_PORT_RCV_ERRORS                      = (1 << 10),
2100         CS_EXCESSIVE_BUFFER_OVERRUNS            = (1 << 9),
2101         CS_FM_CONFIG_ERRORS                     = (1 << 8),
2102         CS_LINK_ERROR_RECOVERY                  = (1 << 7),
2103         CS_LINK_DOWNED                          = (1 << 6),
2104         CS_UNCORRECTABLE_ERRORS                 = (1 << 5),
2105 };
2106
2107 struct opa_clear_port_status {
2108         __be64 port_select_mask[4];
2109         __be32 counter_select_mask;
2110 };
2111
2112 struct opa_aggregate {
2113         __be16 attr_id;
2114         __be16 err_reqlength;   /* 1 bit, 8 res, 7 bit */
2115         __be32 attr_mod;
2116         u8 data[0];
2117 };
2118
2119 #define MSK_LLI 0x000000f0
2120 #define MSK_LLI_SFT 4
2121 #define MSK_LER 0x0000000f
2122 #define MSK_LER_SFT 0
2123 #define ADD_LLI 8
2124 #define ADD_LER 2
2125
2126 /* Request contains first three fields, response contains those plus the rest */
2127 struct opa_port_data_counters_msg {
2128         __be64 port_select_mask[4];
2129         __be32 vl_select_mask;
2130         __be32 resolution;
2131
2132         /* Response fields follow */
2133         struct _port_dctrs {
2134                 u8 port_number;
2135                 u8 reserved2[3];
2136                 __be32 link_quality_indicator; /* 29res, 3bit */
2137
2138                 /* Data counters */
2139                 __be64 port_xmit_data;
2140                 __be64 port_rcv_data;
2141                 __be64 port_xmit_pkts;
2142                 __be64 port_rcv_pkts;
2143                 __be64 port_multicast_xmit_pkts;
2144                 __be64 port_multicast_rcv_pkts;
2145                 __be64 port_xmit_wait;
2146                 __be64 sw_port_congestion;
2147                 __be64 port_rcv_fecn;
2148                 __be64 port_rcv_becn;
2149                 __be64 port_xmit_time_cong;
2150                 __be64 port_xmit_wasted_bw;
2151                 __be64 port_xmit_wait_data;
2152                 __be64 port_rcv_bubble;
2153                 __be64 port_mark_fecn;
2154
2155                 __be64 port_error_counter_summary;
2156                 /* Sum of error counts/port */
2157
2158                 struct _vls_dctrs {
2159                         /* per-VL Data counters */
2160                         __be64 port_vl_xmit_data;
2161                         __be64 port_vl_rcv_data;
2162                         __be64 port_vl_xmit_pkts;
2163                         __be64 port_vl_rcv_pkts;
2164                         __be64 port_vl_xmit_wait;
2165                         __be64 sw_port_vl_congestion;
2166                         __be64 port_vl_rcv_fecn;
2167                         __be64 port_vl_rcv_becn;
2168                         __be64 port_xmit_time_cong;
2169                         __be64 port_vl_xmit_wasted_bw;
2170                         __be64 port_vl_xmit_wait_data;
2171                         __be64 port_vl_rcv_bubble;
2172                         __be64 port_vl_mark_fecn;
2173                 } vls[0];
2174                 /* array size defined by #bits set in vl_select_mask*/
2175         } port[1]; /* array size defined by  #ports in attribute modifier */
2176 };
2177
2178 struct opa_port_error_counters64_msg {
2179         /*
2180          * Request contains first two fields, response contains the
2181          * whole magilla
2182          */
2183         __be64 port_select_mask[4];
2184         __be32 vl_select_mask;
2185
2186         /* Response-only fields follow */
2187         __be32 reserved1;
2188         struct _port_ectrs {
2189                 u8 port_number;
2190                 u8 reserved2[7];
2191                 __be64 port_rcv_constraint_errors;
2192                 __be64 port_rcv_switch_relay_errors;
2193                 __be64 port_xmit_discards;
2194                 __be64 port_xmit_constraint_errors;
2195                 __be64 port_rcv_remote_physical_errors;
2196                 __be64 local_link_integrity_errors;
2197                 __be64 port_rcv_errors;
2198                 __be64 excessive_buffer_overruns;
2199                 __be64 fm_config_errors;
2200                 __be32 link_error_recovery;
2201                 __be32 link_downed;
2202                 u8 uncorrectable_errors;
2203                 u8 reserved3[7];
2204                 struct _vls_ectrs {
2205                         __be64 port_vl_xmit_discards;
2206                 } vls[0];
2207                 /* array size defined by #bits set in vl_select_mask */
2208         } port[1]; /* array size defined by #ports in attribute modifier */
2209 };
2210
2211 struct opa_port_error_info_msg {
2212         __be64 port_select_mask[4];
2213         __be32 error_info_select_mask;
2214         __be32 reserved1;
2215         struct _port_ei {
2216                 u8 port_number;
2217                 u8 reserved2[7];
2218
2219                 /* PortRcvErrorInfo */
2220                 struct {
2221                         u8 status_and_code;
2222                         union {
2223                                 u8 raw[17];
2224                                 struct {
2225                                         /* EI1to12 format */
2226                                         u8 packet_flit1[8];
2227                                         u8 packet_flit2[8];
2228                                         u8 remaining_flit_bits12;
2229                                 } ei1to12;
2230                                 struct {
2231                                         u8 packet_bytes[8];
2232                                         u8 remaining_flit_bits;
2233                                 } ei13;
2234                         } ei;
2235                         u8 reserved3[6];
2236                 } __packed port_rcv_ei;
2237
2238                 /* ExcessiveBufferOverrunInfo */
2239                 struct {
2240                         u8 status_and_sc;
2241                         u8 reserved4[7];
2242                 } __packed excessive_buffer_overrun_ei;
2243
2244                 /* PortXmitConstraintErrorInfo */
2245                 struct {
2246                         u8 status;
2247                         u8 reserved5;
2248                         __be16 pkey;
2249                         __be32 slid;
2250                 } __packed port_xmit_constraint_ei;
2251
2252                 /* PortRcvConstraintErrorInfo */
2253                 struct {
2254                         u8 status;
2255                         u8 reserved6;
2256                         __be16 pkey;
2257                         __be32 slid;
2258                 } __packed port_rcv_constraint_ei;
2259
2260                 /* PortRcvSwitchRelayErrorInfo */
2261                 struct {
2262                         u8 status_and_code;
2263                         u8 reserved7[3];
2264                         __u32 error_info;
2265                 } __packed port_rcv_switch_relay_ei;
2266
2267                 /* UncorrectableErrorInfo */
2268                 struct {
2269                         u8 status_and_code;
2270                         u8 reserved8;
2271                 } __packed uncorrectable_ei;
2272
2273                 /* FMConfigErrorInfo */
2274                 struct {
2275                         u8 status_and_code;
2276                         u8 error_info;
2277                 } __packed fm_config_ei;
2278                 __u32 reserved9;
2279         } port[1]; /* actual array size defined by #ports in attr modifier */
2280 };
2281
2282 /* opa_port_error_info_msg error_info_select_mask bit definitions */
2283 enum error_info_selects {
2284         ES_PORT_RCV_ERROR_INFO                  = (1 << 31),
2285         ES_EXCESSIVE_BUFFER_OVERRUN_INFO        = (1 << 30),
2286         ES_PORT_XMIT_CONSTRAINT_ERROR_INFO      = (1 << 29),
2287         ES_PORT_RCV_CONSTRAINT_ERROR_INFO       = (1 << 28),
2288         ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO     = (1 << 27),
2289         ES_UNCORRECTABLE_ERROR_INFO             = (1 << 26),
2290         ES_FM_CONFIG_ERROR_INFO                 = (1 << 25)
2291 };
2292
2293 static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp,
2294                                      struct ib_device *ibdev, u32 *resp_len)
2295 {
2296         struct opa_class_port_info *p =
2297                 (struct opa_class_port_info *)pmp->data;
2298
2299         memset(pmp->data, 0, sizeof(pmp->data));
2300
2301         if (pmp->mad_hdr.attr_mod != 0)
2302                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2303
2304         p->base_version = OPA_MGMT_BASE_VERSION;
2305         p->class_version = OPA_SMI_CLASS_VERSION;
2306         /*
2307          * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
2308          */
2309         p->cap_mask2_resp_time = cpu_to_be32(18);
2310
2311         if (resp_len)
2312                 *resp_len += sizeof(*p);
2313
2314         return reply((struct ib_mad_hdr *)pmp);
2315 }
2316
2317 static void a0_portstatus(struct hfi1_pportdata *ppd,
2318                           struct opa_port_status_rsp *rsp)
2319 {
2320         if (!is_bx(ppd->dd)) {
2321                 unsigned long vl;
2322                 u64 sum_vl_xmit_wait = 0;
2323                 unsigned long vl_all_mask = VL_MASK_ALL;
2324
2325                 for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) {
2326                         u64 tmp = sum_vl_xmit_wait +
2327                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2328                                                  idx_from_vl(vl));
2329                         if (tmp < sum_vl_xmit_wait) {
2330                                 /* we wrapped */
2331                                 sum_vl_xmit_wait = (u64)~0;
2332                                 break;
2333                         }
2334                         sum_vl_xmit_wait = tmp;
2335                 }
2336                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2337                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2338         }
2339 }
2340
2341 static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
2342                                   struct ib_device *ibdev,
2343                                   u8 port, u32 *resp_len)
2344 {
2345         struct opa_port_status_req *req =
2346                 (struct opa_port_status_req *)pmp->data;
2347         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2348         struct opa_port_status_rsp *rsp;
2349         unsigned long vl_select_mask = be32_to_cpu(req->vl_select_mask);
2350         unsigned long vl;
2351         size_t response_data_size;
2352         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2353         u8 port_num = req->port_num;
2354         u8 num_vls = hweight64(vl_select_mask);
2355         struct _vls_pctrs *vlinfo;
2356         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2357         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2358         int vfi;
2359         u64 tmp, tmp2;
2360
2361         response_data_size = sizeof(struct opa_port_status_rsp) +
2362                                 num_vls * sizeof(struct _vls_pctrs);
2363         if (response_data_size > sizeof(pmp->data)) {
2364                 pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE;
2365                 return reply((struct ib_mad_hdr *)pmp);
2366         }
2367
2368         if (nports != 1 || (port_num && port_num != port) ||
2369             num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) {
2370                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2371                 return reply((struct ib_mad_hdr *)pmp);
2372         }
2373
2374         memset(pmp->data, 0, sizeof(pmp->data));
2375
2376         rsp = (struct opa_port_status_rsp *)pmp->data;
2377         if (port_num)
2378                 rsp->port_num = port_num;
2379         else
2380                 rsp->port_num = port;
2381
2382         rsp->port_rcv_constraint_errors =
2383                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2384                                            CNTR_INVALID_VL));
2385
2386         hfi1_read_link_quality(dd, &rsp->link_quality_indicator);
2387
2388         rsp->vl_select_mask = cpu_to_be32((u32)vl_select_mask);
2389         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2390                                           CNTR_INVALID_VL));
2391         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2392                                          CNTR_INVALID_VL));
2393         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2394                                           CNTR_INVALID_VL));
2395         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2396                                          CNTR_INVALID_VL));
2397         rsp->port_multicast_xmit_pkts =
2398                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2399                                           CNTR_INVALID_VL));
2400         rsp->port_multicast_rcv_pkts =
2401                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2402                                           CNTR_INVALID_VL));
2403         rsp->port_xmit_wait =
2404                 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2405         rsp->port_rcv_fecn =
2406                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2407         rsp->port_rcv_becn =
2408                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2409         rsp->port_xmit_discards =
2410                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2411                                            CNTR_INVALID_VL));
2412         rsp->port_xmit_constraint_errors =
2413                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2414                                            CNTR_INVALID_VL));
2415         rsp->port_rcv_remote_physical_errors =
2416                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2417                                           CNTR_INVALID_VL));
2418         rsp->local_link_integrity_errors =
2419                 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
2420                                           CNTR_INVALID_VL));
2421         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2422         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2423                                    CNTR_INVALID_VL);
2424         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2425                 /* overflow/wrapped */
2426                 rsp->link_error_recovery = cpu_to_be32(~0);
2427         } else {
2428                 rsp->link_error_recovery = cpu_to_be32(tmp2);
2429         }
2430         rsp->port_rcv_errors =
2431                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2432         rsp->excessive_buffer_overruns =
2433                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2434         rsp->fm_config_errors =
2435                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2436                                           CNTR_INVALID_VL));
2437         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2438                                                       CNTR_INVALID_VL));
2439
2440         /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */
2441         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2442         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2443
2444         vlinfo = &rsp->vls[0];
2445         vfi = 0;
2446         /* The vl_select_mask has been checked above, and we know
2447          * that it contains only entries which represent valid VLs.
2448          * So in the for_each_set_bit() loop below, we don't need
2449          * any additional checks for vl.
2450          */
2451         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
2452                 memset(vlinfo, 0, sizeof(*vlinfo));
2453
2454                 tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
2455                 rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
2456
2457                 rsp->vls[vfi].port_vl_rcv_pkts =
2458                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2459                                                   idx_from_vl(vl)));
2460
2461                 rsp->vls[vfi].port_vl_xmit_data =
2462                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2463                                                    idx_from_vl(vl)));
2464
2465                 rsp->vls[vfi].port_vl_xmit_pkts =
2466                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2467                                                    idx_from_vl(vl)));
2468
2469                 rsp->vls[vfi].port_vl_xmit_wait =
2470                         cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2471                                                    idx_from_vl(vl)));
2472
2473                 rsp->vls[vfi].port_vl_rcv_fecn =
2474                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2475                                                   idx_from_vl(vl)));
2476
2477                 rsp->vls[vfi].port_vl_rcv_becn =
2478                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2479                                                   idx_from_vl(vl)));
2480
2481                 rsp->vls[vfi].port_vl_xmit_discards =
2482                         cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
2483                                                    idx_from_vl(vl)));
2484                 vlinfo++;
2485                 vfi++;
2486         }
2487
2488         a0_portstatus(ppd, rsp);
2489
2490         if (resp_len)
2491                 *resp_len += response_data_size;
2492
2493         return reply((struct ib_mad_hdr *)pmp);
2494 }
2495
2496 static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port,
2497                                      u8 res_lli, u8 res_ler)
2498 {
2499         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2500         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2501         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2502         u64 error_counter_summary = 0, tmp;
2503
2504         error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2505                                                 CNTR_INVALID_VL);
2506         /* port_rcv_switch_relay_errors is 0 for HFIs */
2507         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD,
2508                                                 CNTR_INVALID_VL);
2509         error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2510                                                 CNTR_INVALID_VL);
2511         error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2512                                                CNTR_INVALID_VL);
2513         /* local link integrity must be right-shifted by the lli resolution */
2514         error_counter_summary += (read_dev_cntr(dd, C_DC_RX_REPLAY,
2515                                                 CNTR_INVALID_VL) >> res_lli);
2516         /* link error recovery must b right-shifted by the ler resolution */
2517         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2518         tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL);
2519         error_counter_summary += (tmp >> res_ler);
2520         error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR,
2521                                                CNTR_INVALID_VL);
2522         error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL);
2523         error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2524                                                CNTR_INVALID_VL);
2525         /* ppd->link_downed is a 32-bit value */
2526         error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN,
2527                                                 CNTR_INVALID_VL);
2528         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2529         /* this is an 8-bit quantity */
2530         error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff;
2531
2532         return error_counter_summary;
2533 }
2534
2535 static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp)
2536 {
2537         if (!is_bx(ppd->dd)) {
2538                 unsigned long vl;
2539                 u64 sum_vl_xmit_wait = 0;
2540                 unsigned long vl_all_mask = VL_MASK_ALL;
2541
2542                 for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) {
2543                         u64 tmp = sum_vl_xmit_wait +
2544                                   read_port_cntr(ppd, C_TX_WAIT_VL,
2545                                                  idx_from_vl(vl));
2546                         if (tmp < sum_vl_xmit_wait) {
2547                                 /* we wrapped */
2548                                 sum_vl_xmit_wait = (u64)~0;
2549                                 break;
2550                         }
2551                         sum_vl_xmit_wait = tmp;
2552                 }
2553                 if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)
2554                         rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);
2555         }
2556 }
2557
2558 static void pma_get_opa_port_dctrs(struct ib_device *ibdev,
2559                                    struct _port_dctrs *rsp)
2560 {
2561         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2562
2563         rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS,
2564                                                 CNTR_INVALID_VL));
2565         rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
2566                                                 CNTR_INVALID_VL));
2567         rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
2568                                                 CNTR_INVALID_VL));
2569         rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
2570                                                 CNTR_INVALID_VL));
2571         rsp->port_multicast_xmit_pkts =
2572                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS,
2573                                           CNTR_INVALID_VL));
2574         rsp->port_multicast_rcv_pkts =
2575                 cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
2576                                           CNTR_INVALID_VL));
2577 }
2578
2579 static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
2580                                     struct ib_device *ibdev,
2581                                     u8 port, u32 *resp_len)
2582 {
2583         struct opa_port_data_counters_msg *req =
2584                 (struct opa_port_data_counters_msg *)pmp->data;
2585         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2586         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2587         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2588         struct _port_dctrs *rsp;
2589         struct _vls_dctrs *vlinfo;
2590         size_t response_data_size;
2591         u32 num_ports;
2592         u8 num_pslm;
2593         u8 lq, num_vls;
2594         u8 res_lli, res_ler;
2595         u64 port_mask;
2596         u8 port_num;
2597         unsigned long vl;
2598         unsigned long vl_select_mask;
2599         int vfi;
2600
2601         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2602         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2603         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2604         vl_select_mask = be32_to_cpu(req->vl_select_mask);
2605         res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT;
2606         res_lli = res_lli ? res_lli + ADD_LLI : 0;
2607         res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT;
2608         res_ler = res_ler ? res_ler + ADD_LER : 0;
2609
2610         if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) {
2611                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2612                 return reply((struct ib_mad_hdr *)pmp);
2613         }
2614
2615         /* Sanity check */
2616         response_data_size = sizeof(struct opa_port_data_counters_msg) +
2617                                 num_vls * sizeof(struct _vls_dctrs);
2618
2619         if (response_data_size > sizeof(pmp->data)) {
2620                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2621                 return reply((struct ib_mad_hdr *)pmp);
2622         }
2623
2624         /*
2625          * The bit set in the mask needs to be consistent with the
2626          * port the request came in on.
2627          */
2628         port_mask = be64_to_cpu(req->port_select_mask[3]);
2629         port_num = find_first_bit((unsigned long *)&port_mask,
2630                                   sizeof(port_mask) * 8);
2631
2632         if (port_num != port) {
2633                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2634                 return reply((struct ib_mad_hdr *)pmp);
2635         }
2636
2637         rsp = &req->port[0];
2638         memset(rsp, 0, sizeof(*rsp));
2639
2640         rsp->port_number = port;
2641         /*
2642          * Note that link_quality_indicator is a 32 bit quantity in
2643          * 'datacounters' queries (as opposed to 'portinfo' queries,
2644          * where it's a byte).
2645          */
2646         hfi1_read_link_quality(dd, &lq);
2647         rsp->link_quality_indicator = cpu_to_be32((u32)lq);
2648         pma_get_opa_port_dctrs(ibdev, rsp);
2649
2650         rsp->port_xmit_wait =
2651                 cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
2652         rsp->port_rcv_fecn =
2653                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
2654         rsp->port_rcv_becn =
2655                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL));
2656         rsp->port_error_counter_summary =
2657                 cpu_to_be64(get_error_counter_summary(ibdev, port,
2658                                                       res_lli, res_ler));
2659
2660         vlinfo = &rsp->vls[0];
2661         vfi = 0;
2662         /* The vl_select_mask has been checked above, and we know
2663          * that it contains only entries which represent valid VLs.
2664          * So in the for_each_set_bit() loop below, we don't need
2665          * any additional checks for vl.
2666          */
2667         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
2668                 memset(vlinfo, 0, sizeof(*vlinfo));
2669
2670                 rsp->vls[vfi].port_vl_xmit_data =
2671                         cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL,
2672                                                    idx_from_vl(vl)));
2673
2674                 rsp->vls[vfi].port_vl_rcv_data =
2675                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
2676                                                   idx_from_vl(vl)));
2677
2678                 rsp->vls[vfi].port_vl_xmit_pkts =
2679                         cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
2680                                                    idx_from_vl(vl)));
2681
2682                 rsp->vls[vfi].port_vl_rcv_pkts =
2683                         cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
2684                                                   idx_from_vl(vl)));
2685
2686                 rsp->vls[vfi].port_vl_xmit_wait =
2687                         cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
2688                                                    idx_from_vl(vl)));
2689
2690                 rsp->vls[vfi].port_vl_rcv_fecn =
2691                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
2692                                                   idx_from_vl(vl)));
2693                 rsp->vls[vfi].port_vl_rcv_becn =
2694                         cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL,
2695                                                   idx_from_vl(vl)));
2696
2697                 /* rsp->port_vl_xmit_time_cong is 0 for HFIs */
2698                 /* rsp->port_vl_xmit_wasted_bw ??? */
2699                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ???
2700                  * does this differ from rsp->vls[vfi].port_vl_xmit_wait
2701                  */
2702                 /*rsp->vls[vfi].port_vl_mark_fecn =
2703                  *      cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT
2704                  *              + offset));
2705                  */
2706                 vlinfo++;
2707                 vfi++;
2708         }
2709
2710         a0_datacounters(ppd, rsp);
2711
2712         if (resp_len)
2713                 *resp_len += response_data_size;
2714
2715         return reply((struct ib_mad_hdr *)pmp);
2716 }
2717
2718 static int pma_get_ib_portcounters_ext(struct ib_pma_mad *pmp,
2719                                        struct ib_device *ibdev, u8 port)
2720 {
2721         struct ib_pma_portcounters_ext *p = (struct ib_pma_portcounters_ext *)
2722                                                 pmp->data;
2723         struct _port_dctrs rsp;
2724
2725         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
2726                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2727                 goto bail;
2728         }
2729
2730         memset(&rsp, 0, sizeof(rsp));
2731         pma_get_opa_port_dctrs(ibdev, &rsp);
2732
2733         p->port_xmit_data = rsp.port_xmit_data;
2734         p->port_rcv_data = rsp.port_rcv_data;
2735         p->port_xmit_packets = rsp.port_xmit_pkts;
2736         p->port_rcv_packets = rsp.port_rcv_pkts;
2737         p->port_unicast_xmit_packets = 0;
2738         p->port_unicast_rcv_packets =  0;
2739         p->port_multicast_xmit_packets = rsp.port_multicast_xmit_pkts;
2740         p->port_multicast_rcv_packets = rsp.port_multicast_rcv_pkts;
2741
2742 bail:
2743         return reply((struct ib_mad_hdr *)pmp);
2744 }
2745
2746 static void pma_get_opa_port_ectrs(struct ib_device *ibdev,
2747                                    struct _port_ectrs *rsp, u8 port)
2748 {
2749         u64 tmp, tmp2;
2750         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2751         struct hfi1_ibport *ibp = to_iport(ibdev, port);
2752         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
2753
2754         tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL);
2755         tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
2756                                         CNTR_INVALID_VL);
2757         if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) {
2758                 /* overflow/wrapped */
2759                 rsp->link_error_recovery = cpu_to_be32(~0);
2760         } else {
2761                 rsp->link_error_recovery = cpu_to_be32(tmp2);
2762         }
2763
2764         rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN,
2765                                                 CNTR_INVALID_VL));
2766         rsp->port_rcv_errors =
2767                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2768         rsp->port_rcv_remote_physical_errors =
2769                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2770                                           CNTR_INVALID_VL));
2771         rsp->port_rcv_switch_relay_errors = 0;
2772         rsp->port_xmit_discards =
2773                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD,
2774                                            CNTR_INVALID_VL));
2775         rsp->port_xmit_constraint_errors =
2776                 cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR,
2777                                            CNTR_INVALID_VL));
2778         rsp->port_rcv_constraint_errors =
2779                 cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR,
2780                                            CNTR_INVALID_VL));
2781         rsp->local_link_integrity_errors =
2782                 cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY,
2783                                           CNTR_INVALID_VL));
2784         rsp->excessive_buffer_overruns =
2785                 cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL));
2786 }
2787
2788 static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
2789                                   struct ib_device *ibdev,
2790                                   u8 port, u32 *resp_len)
2791 {
2792         size_t response_data_size;
2793         struct _port_ectrs *rsp;
2794         u8 port_num;
2795         struct opa_port_error_counters64_msg *req;
2796         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2797         u32 num_ports;
2798         u8 num_pslm;
2799         u8 num_vls;
2800         struct hfi1_ibport *ibp;
2801         struct hfi1_pportdata *ppd;
2802         struct _vls_ectrs *vlinfo;
2803         unsigned long vl;
2804         u64 port_mask, tmp;
2805         unsigned long vl_select_mask;
2806         int vfi;
2807
2808         req = (struct opa_port_error_counters64_msg *)pmp->data;
2809
2810         num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
2811
2812         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2813         num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
2814
2815         if (num_ports != 1 || num_ports != num_pslm) {
2816                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2817                 return reply((struct ib_mad_hdr *)pmp);
2818         }
2819
2820         response_data_size = sizeof(struct opa_port_error_counters64_msg) +
2821                                 num_vls * sizeof(struct _vls_ectrs);
2822
2823         if (response_data_size > sizeof(pmp->data)) {
2824                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2825                 return reply((struct ib_mad_hdr *)pmp);
2826         }
2827         /*
2828          * The bit set in the mask needs to be consistent with the
2829          * port the request came in on.
2830          */
2831         port_mask = be64_to_cpu(req->port_select_mask[3]);
2832         port_num = find_first_bit((unsigned long *)&port_mask,
2833                                   sizeof(port_mask) * 8);
2834
2835         if (port_num != port) {
2836                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2837                 return reply((struct ib_mad_hdr *)pmp);
2838         }
2839
2840         rsp = &req->port[0];
2841
2842         ibp = to_iport(ibdev, port_num);
2843         ppd = ppd_from_ibp(ibp);
2844
2845         memset(rsp, 0, sizeof(*rsp));
2846         rsp->port_number = port_num;
2847
2848         pma_get_opa_port_ectrs(ibdev, rsp, port_num);
2849
2850         rsp->port_rcv_remote_physical_errors =
2851                 cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR,
2852                                           CNTR_INVALID_VL));
2853         rsp->fm_config_errors =
2854                 cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR,
2855                                           CNTR_INVALID_VL));
2856         tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL);
2857
2858         rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff;
2859         rsp->port_rcv_errors =
2860                 cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL));
2861         vlinfo = &rsp->vls[0];
2862         vfi = 0;
2863         vl_select_mask = be32_to_cpu(req->vl_select_mask);
2864         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
2865                 memset(vlinfo, 0, sizeof(*vlinfo));
2866                 rsp->vls[vfi].port_vl_xmit_discards =
2867                         cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
2868                                                    idx_from_vl(vl)));
2869                 vlinfo += 1;
2870                 vfi++;
2871         }
2872
2873         if (resp_len)
2874                 *resp_len += response_data_size;
2875
2876         return reply((struct ib_mad_hdr *)pmp);
2877 }
2878
2879 static int pma_get_ib_portcounters(struct ib_pma_mad *pmp,
2880                                    struct ib_device *ibdev, u8 port)
2881 {
2882         struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
2883                 pmp->data;
2884         struct _port_ectrs rsp;
2885         u64 temp_link_overrun_errors;
2886         u64 temp_64;
2887         u32 temp_32;
2888
2889         memset(&rsp, 0, sizeof(rsp));
2890         pma_get_opa_port_ectrs(ibdev, &rsp, port);
2891
2892         if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) {
2893                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2894                 goto bail;
2895         }
2896
2897         p->symbol_error_counter = 0; /* N/A for OPA */
2898
2899         temp_32 = be32_to_cpu(rsp.link_error_recovery);
2900         if (temp_32 > 0xFFUL)
2901                 p->link_error_recovery_counter = 0xFF;
2902         else
2903                 p->link_error_recovery_counter = (u8)temp_32;
2904
2905         temp_32 = be32_to_cpu(rsp.link_downed);
2906         if (temp_32 > 0xFFUL)
2907                 p->link_downed_counter = 0xFF;
2908         else
2909                 p->link_downed_counter = (u8)temp_32;
2910
2911         temp_64 = be64_to_cpu(rsp.port_rcv_errors);
2912         if (temp_64 > 0xFFFFUL)
2913                 p->port_rcv_errors = cpu_to_be16(0xFFFF);
2914         else
2915                 p->port_rcv_errors = cpu_to_be16((u16)temp_64);
2916
2917         temp_64 = be64_to_cpu(rsp.port_rcv_remote_physical_errors);
2918         if (temp_64 > 0xFFFFUL)
2919                 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF);
2920         else
2921                 p->port_rcv_remphys_errors = cpu_to_be16((u16)temp_64);
2922
2923         temp_64 = be64_to_cpu(rsp.port_rcv_switch_relay_errors);
2924         p->port_rcv_switch_relay_errors = cpu_to_be16((u16)temp_64);
2925
2926         temp_64 = be64_to_cpu(rsp.port_xmit_discards);
2927         if (temp_64 > 0xFFFFUL)
2928                 p->port_xmit_discards = cpu_to_be16(0xFFFF);
2929         else
2930                 p->port_xmit_discards = cpu_to_be16((u16)temp_64);
2931
2932         temp_64 = be64_to_cpu(rsp.port_xmit_constraint_errors);
2933         if (temp_64 > 0xFFUL)
2934                 p->port_xmit_constraint_errors = 0xFF;
2935         else
2936                 p->port_xmit_constraint_errors = (u8)temp_64;
2937
2938         temp_64 = be64_to_cpu(rsp.port_rcv_constraint_errors);
2939         if (temp_64 > 0xFFUL)
2940                 p->port_rcv_constraint_errors = 0xFFUL;
2941         else
2942                 p->port_rcv_constraint_errors = (u8)temp_64;
2943
2944         /* LocalLink: 7:4, BufferOverrun: 3:0 */
2945         temp_64 = be64_to_cpu(rsp.local_link_integrity_errors);
2946         if (temp_64 > 0xFUL)
2947                 temp_64 = 0xFUL;
2948
2949         temp_link_overrun_errors = temp_64 << 4;
2950
2951         temp_64 = be64_to_cpu(rsp.excessive_buffer_overruns);
2952         if (temp_64 > 0xFUL)
2953                 temp_64 = 0xFUL;
2954         temp_link_overrun_errors |= temp_64;
2955
2956         p->link_overrun_errors = (u8)temp_link_overrun_errors;
2957
2958         p->vl15_dropped = 0; /* N/A for OPA */
2959
2960 bail:
2961         return reply((struct ib_mad_hdr *)pmp);
2962 }
2963
2964 static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp,
2965                                  struct ib_device *ibdev,
2966                                  u8 port, u32 *resp_len)
2967 {
2968         size_t response_data_size;
2969         struct _port_ei *rsp;
2970         struct opa_port_error_info_msg *req;
2971         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
2972         u64 port_mask;
2973         u32 num_ports;
2974         u8 port_num;
2975         u8 num_pslm;
2976         u64 reg;
2977
2978         req = (struct opa_port_error_info_msg *)pmp->data;
2979         rsp = &req->port[0];
2980
2981         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
2982         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
2983
2984         memset(rsp, 0, sizeof(*rsp));
2985
2986         if (num_ports != 1 || num_ports != num_pslm) {
2987                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2988                 return reply((struct ib_mad_hdr *)pmp);
2989         }
2990
2991         /* Sanity check */
2992         response_data_size = sizeof(struct opa_port_error_info_msg);
2993
2994         if (response_data_size > sizeof(pmp->data)) {
2995                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
2996                 return reply((struct ib_mad_hdr *)pmp);
2997         }
2998
2999         /*
3000          * The bit set in the mask needs to be consistent with the port
3001          * the request came in on.
3002          */
3003         port_mask = be64_to_cpu(req->port_select_mask[3]);
3004         port_num = find_first_bit((unsigned long *)&port_mask,
3005                                   sizeof(port_mask) * 8);
3006
3007         if (port_num != port) {
3008                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3009                 return reply((struct ib_mad_hdr *)pmp);
3010         }
3011
3012         /* PortRcvErrorInfo */
3013         rsp->port_rcv_ei.status_and_code =
3014                 dd->err_info_rcvport.status_and_code;
3015         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1,
3016                &dd->err_info_rcvport.packet_flit1, sizeof(u64));
3017         memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2,
3018                &dd->err_info_rcvport.packet_flit2, sizeof(u64));
3019
3020         /* ExcessiverBufferOverrunInfo */
3021         reg = read_csr(dd, RCV_ERR_INFO);
3022         if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) {
3023                 /*
3024                  * if the RcvExcessBufferOverrun bit is set, save SC of
3025                  * first pkt that encountered an excess buffer overrun
3026                  */
3027                 u8 tmp = (u8)reg;
3028
3029                 tmp &=  RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK;
3030                 tmp <<= 2;
3031                 rsp->excessive_buffer_overrun_ei.status_and_sc = tmp;
3032                 /* set the status bit */
3033                 rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80;
3034         }
3035
3036         rsp->port_xmit_constraint_ei.status =
3037                 dd->err_info_xmit_constraint.status;
3038         rsp->port_xmit_constraint_ei.pkey =
3039                 cpu_to_be16(dd->err_info_xmit_constraint.pkey);
3040         rsp->port_xmit_constraint_ei.slid =
3041                 cpu_to_be32(dd->err_info_xmit_constraint.slid);
3042
3043         rsp->port_rcv_constraint_ei.status =
3044                 dd->err_info_rcv_constraint.status;
3045         rsp->port_rcv_constraint_ei.pkey =
3046                 cpu_to_be16(dd->err_info_rcv_constraint.pkey);
3047         rsp->port_rcv_constraint_ei.slid =
3048                 cpu_to_be32(dd->err_info_rcv_constraint.slid);
3049
3050         /* UncorrectableErrorInfo */
3051         rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable;
3052
3053         /* FMConfigErrorInfo */
3054         rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig;
3055
3056         if (resp_len)
3057                 *resp_len += response_data_size;
3058
3059         return reply((struct ib_mad_hdr *)pmp);
3060 }
3061
3062 static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
3063                                   struct ib_device *ibdev,
3064                                   u8 port, u32 *resp_len)
3065 {
3066         struct opa_clear_port_status *req =
3067                 (struct opa_clear_port_status *)pmp->data;
3068         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3069         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3070         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3071         u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
3072         u64 portn = be64_to_cpu(req->port_select_mask[3]);
3073         u32 counter_select = be32_to_cpu(req->counter_select_mask);
3074         unsigned long vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */
3075         unsigned long vl;
3076
3077         if ((nports != 1) || (portn != 1 << port)) {
3078                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3079                 return reply((struct ib_mad_hdr *)pmp);
3080         }
3081         /*
3082          * only counters returned by pma_get_opa_portstatus() are
3083          * handled, so when pma_get_opa_portstatus() gets a fix,
3084          * the corresponding change should be made here as well.
3085          */
3086
3087         if (counter_select & CS_PORT_XMIT_DATA)
3088                 write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0);
3089
3090         if (counter_select & CS_PORT_RCV_DATA)
3091                 write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0);
3092
3093         if (counter_select & CS_PORT_XMIT_PKTS)
3094                 write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3095
3096         if (counter_select & CS_PORT_RCV_PKTS)
3097                 write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0);
3098
3099         if (counter_select & CS_PORT_MCAST_XMIT_PKTS)
3100                 write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0);
3101
3102         if (counter_select & CS_PORT_MCAST_RCV_PKTS)
3103                 write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
3104
3105         if (counter_select & CS_PORT_XMIT_WAIT)
3106                 write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
3107
3108         /* ignore cs_sw_portCongestion for HFIs */
3109
3110         if (counter_select & CS_PORT_RCV_FECN)
3111                 write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0);
3112
3113         if (counter_select & CS_PORT_RCV_BECN)
3114                 write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0);
3115
3116         /* ignore cs_port_xmit_time_cong for HFIs */
3117         /* ignore cs_port_xmit_wasted_bw for now */
3118         /* ignore cs_port_xmit_wait_data for now */
3119         if (counter_select & CS_PORT_RCV_BUBBLE)
3120                 write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0);
3121
3122         /* Only applicable for switch */
3123         /* if (counter_select & CS_PORT_MARK_FECN)
3124          *      write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);
3125          */
3126
3127         if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS)
3128                 write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0);
3129
3130         /* ignore cs_port_rcv_switch_relay_errors for HFIs */
3131         if (counter_select & CS_PORT_XMIT_DISCARDS)
3132                 write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0);
3133
3134         if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS)
3135                 write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0);
3136
3137         if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS)
3138                 write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0);
3139
3140         if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS)
3141                 write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3142
3143         if (counter_select & CS_LINK_ERROR_RECOVERY) {
3144                 write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3145                 write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT,
3146                                CNTR_INVALID_VL, 0);
3147         }
3148
3149         if (counter_select & CS_PORT_RCV_ERRORS)
3150                 write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3151
3152         if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) {
3153                 write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3154                 dd->rcv_ovfl_cnt = 0;
3155         }
3156
3157         if (counter_select & CS_FM_CONFIG_ERRORS)
3158                 write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0);
3159
3160         if (counter_select & CS_LINK_DOWNED)
3161                 write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0);
3162
3163         if (counter_select & CS_UNCORRECTABLE_ERRORS)
3164                 write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0);
3165
3166         for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) {
3167                 if (counter_select & CS_PORT_XMIT_DATA)
3168                         write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0);
3169
3170                 if (counter_select & CS_PORT_RCV_DATA)
3171                         write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0);
3172
3173                 if (counter_select & CS_PORT_XMIT_PKTS)
3174                         write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0);
3175
3176                 if (counter_select & CS_PORT_RCV_PKTS)
3177                         write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
3178
3179                 if (counter_select & CS_PORT_XMIT_WAIT)
3180                         write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
3181
3182                 /* sw_port_vl_congestion is 0 for HFIs */
3183                 if (counter_select & CS_PORT_RCV_FECN)
3184                         write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0);
3185
3186                 if (counter_select & CS_PORT_RCV_BECN)
3187                         write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0);
3188
3189                 /* port_vl_xmit_time_cong is 0 for HFIs */
3190                 /* port_vl_xmit_wasted_bw ??? */
3191                 /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */
3192                 if (counter_select & CS_PORT_RCV_BUBBLE)
3193                         write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0);
3194
3195                 /* if (counter_select & CS_PORT_MARK_FECN)
3196                  *     write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0);
3197                  */
3198                 if (counter_select & C_SW_XMIT_DSCD_VL)
3199                         write_port_cntr(ppd, C_SW_XMIT_DSCD_VL,
3200                                         idx_from_vl(vl), 0);
3201         }
3202
3203         if (resp_len)
3204                 *resp_len += sizeof(*req);
3205
3206         return reply((struct ib_mad_hdr *)pmp);
3207 }
3208
3209 static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp,
3210                                  struct ib_device *ibdev,
3211                                  u8 port, u32 *resp_len)
3212 {
3213         struct _port_ei *rsp;
3214         struct opa_port_error_info_msg *req;
3215         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3216         u64 port_mask;
3217         u32 num_ports;
3218         u8 port_num;
3219         u8 num_pslm;
3220         u32 error_info_select;
3221
3222         req = (struct opa_port_error_info_msg *)pmp->data;
3223         rsp = &req->port[0];
3224
3225         num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod));
3226         num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3]));
3227
3228         memset(rsp, 0, sizeof(*rsp));
3229
3230         if (num_ports != 1 || num_ports != num_pslm) {
3231                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3232                 return reply((struct ib_mad_hdr *)pmp);
3233         }
3234
3235         /*
3236          * The bit set in the mask needs to be consistent with the port
3237          * the request came in on.
3238          */
3239         port_mask = be64_to_cpu(req->port_select_mask[3]);
3240         port_num = find_first_bit((unsigned long *)&port_mask,
3241                                   sizeof(port_mask) * 8);
3242
3243         if (port_num != port) {
3244                 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
3245                 return reply((struct ib_mad_hdr *)pmp);
3246         }
3247
3248         error_info_select = be32_to_cpu(req->error_info_select_mask);
3249
3250         /* PortRcvErrorInfo */
3251         if (error_info_select & ES_PORT_RCV_ERROR_INFO)
3252                 /* turn off status bit */
3253                 dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3254
3255         /* ExcessiverBufferOverrunInfo */
3256         if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO)
3257                 /*
3258                  * status bit is essentially kept in the h/w - bit 5 of
3259                  * RCV_ERR_INFO
3260                  */
3261                 write_csr(dd, RCV_ERR_INFO,
3262                           RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK);
3263
3264         if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO)
3265                 dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3266
3267         if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO)
3268                 dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK;
3269
3270         /* UncorrectableErrorInfo */
3271         if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO)
3272                 /* turn off status bit */
3273                 dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK;
3274
3275         /* FMConfigErrorInfo */
3276         if (error_info_select & ES_FM_CONFIG_ERROR_INFO)
3277                 /* turn off status bit */
3278                 dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK;
3279
3280         if (resp_len)
3281                 *resp_len += sizeof(*req);
3282
3283         return reply((struct ib_mad_hdr *)pmp);
3284 }
3285
3286 struct opa_congestion_info_attr {
3287         __be16 congestion_info;
3288         u8 control_table_cap;   /* Multiple of 64 entry unit CCTs */
3289         u8 congestion_log_length;
3290 } __packed;
3291
3292 static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data,
3293                                     struct ib_device *ibdev, u8 port,
3294                                     u32 *resp_len)
3295 {
3296         struct opa_congestion_info_attr *p =
3297                 (struct opa_congestion_info_attr *)data;
3298         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3299         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3300
3301         p->congestion_info = 0;
3302         p->control_table_cap = ppd->cc_max_table_entries;
3303         p->congestion_log_length = OPA_CONG_LOG_ELEMS;
3304
3305         if (resp_len)
3306                 *resp_len += sizeof(*p);
3307
3308         return reply((struct ib_mad_hdr *)smp);
3309 }
3310
3311 static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am,
3312                                        u8 *data, struct ib_device *ibdev,
3313                                        u8 port, u32 *resp_len)
3314 {
3315         int i;
3316         struct opa_congestion_setting_attr *p =
3317                 (struct opa_congestion_setting_attr *)data;
3318         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3319         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3320         struct opa_congestion_setting_entry_shadow *entries;
3321         struct cc_state *cc_state;
3322
3323         rcu_read_lock();
3324
3325         cc_state = get_cc_state(ppd);
3326
3327         if (!cc_state) {
3328                 rcu_read_unlock();
3329                 return reply((struct ib_mad_hdr *)smp);
3330         }
3331
3332         entries = cc_state->cong_setting.entries;
3333         p->port_control = cpu_to_be16(cc_state->cong_setting.port_control);
3334         p->control_map = cpu_to_be32(cc_state->cong_setting.control_map);
3335         for (i = 0; i < OPA_MAX_SLS; i++) {
3336                 p->entries[i].ccti_increase = entries[i].ccti_increase;
3337                 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
3338                 p->entries[i].trigger_threshold =
3339                         entries[i].trigger_threshold;
3340                 p->entries[i].ccti_min = entries[i].ccti_min;
3341         }
3342
3343         rcu_read_unlock();
3344
3345         if (resp_len)
3346                 *resp_len += sizeof(*p);
3347
3348         return reply((struct ib_mad_hdr *)smp);
3349 }
3350
3351 /*
3352  * Apply congestion control information stored in the ppd to the
3353  * active structure.
3354  */
3355 static void apply_cc_state(struct hfi1_pportdata *ppd)
3356 {
3357         struct cc_state *old_cc_state, *new_cc_state;
3358
3359         new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL);
3360         if (!new_cc_state)
3361                 return;
3362
3363         /*
3364          * Hold the lock for updating *and* to prevent ppd information
3365          * from changing during the update.
3366          */
3367         spin_lock(&ppd->cc_state_lock);
3368
3369         old_cc_state = get_cc_state_protected(ppd);
3370         if (!old_cc_state) {
3371                 /* never active, or shutting down */
3372                 spin_unlock(&ppd->cc_state_lock);
3373                 kfree(new_cc_state);
3374                 return;
3375         }
3376
3377         *new_cc_state = *old_cc_state;
3378
3379         new_cc_state->cct.ccti_limit = ppd->total_cct_entry - 1;
3380         memcpy(new_cc_state->cct.entries, ppd->ccti_entries,
3381                ppd->total_cct_entry * sizeof(struct ib_cc_table_entry));
3382
3383         new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED;
3384         new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map;
3385         memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries,
3386                OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry));
3387
3388         rcu_assign_pointer(ppd->cc_state, new_cc_state);
3389
3390         spin_unlock(&ppd->cc_state_lock);
3391
3392         kfree_rcu(old_cc_state, rcu);
3393 }
3394
3395 static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data,
3396                                        struct ib_device *ibdev, u8 port,
3397                                        u32 *resp_len)
3398 {
3399         struct opa_congestion_setting_attr *p =
3400                 (struct opa_congestion_setting_attr *)data;
3401         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3402         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3403         struct opa_congestion_setting_entry_shadow *entries;
3404         int i;
3405
3406         /*
3407          * Save details from packet into the ppd.  Hold the cc_state_lock so
3408          * our information is consistent with anyone trying to apply the state.
3409          */
3410         spin_lock(&ppd->cc_state_lock);
3411         ppd->cc_sl_control_map = be32_to_cpu(p->control_map);
3412
3413         entries = ppd->congestion_entries;
3414         for (i = 0; i < OPA_MAX_SLS; i++) {
3415                 entries[i].ccti_increase = p->entries[i].ccti_increase;
3416                 entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer);
3417                 entries[i].trigger_threshold =
3418                         p->entries[i].trigger_threshold;
3419                 entries[i].ccti_min = p->entries[i].ccti_min;
3420         }
3421         spin_unlock(&ppd->cc_state_lock);
3422
3423         /* now apply the information */
3424         apply_cc_state(ppd);
3425
3426         return __subn_get_opa_cong_setting(smp, am, data, ibdev, port,
3427                                            resp_len);
3428 }
3429
3430 static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am,
3431                                         u8 *data, struct ib_device *ibdev,
3432                                         u8 port, u32 *resp_len)
3433 {
3434         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3435         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3436         struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data;
3437         s64 ts;
3438         int i;
3439
3440         if (am != 0) {
3441                 smp->status |= IB_SMP_INVALID_FIELD;
3442                 return reply((struct ib_mad_hdr *)smp);
3443         }
3444
3445         spin_lock_irq(&ppd->cc_log_lock);
3446
3447         cong_log->log_type = OPA_CC_LOG_TYPE_HFI;
3448         cong_log->congestion_flags = 0;
3449         cong_log->threshold_event_counter =
3450                 cpu_to_be16(ppd->threshold_event_counter);
3451         memcpy(cong_log->threshold_cong_event_map,
3452                ppd->threshold_cong_event_map,
3453                sizeof(cong_log->threshold_cong_event_map));
3454         /* keep timestamp in units of 1.024 usec */
3455         ts = ktime_to_ns(ktime_get()) / 1024;
3456         cong_log->current_time_stamp = cpu_to_be32(ts);
3457         for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) {
3458                 struct opa_hfi1_cong_log_event_internal *cce =
3459                         &ppd->cc_events[ppd->cc_mad_idx++];
3460                 if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS)
3461                         ppd->cc_mad_idx = 0;
3462                 /*
3463                  * Entries which are older than twice the time
3464                  * required to wrap the counter are supposed to
3465                  * be zeroed (CA10-49 IBTA, release 1.2.1, V1).
3466                  */
3467                 if ((u64)(ts - cce->timestamp) > (2 * UINT_MAX))
3468                         continue;
3469                 memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3);
3470                 memcpy(cong_log->events[i].remote_qp_number_cn_entry,
3471                        &cce->rqpn, 3);
3472                 cong_log->events[i].sl_svc_type_cn_entry =
3473                         ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7);
3474                 cong_log->events[i].remote_lid_cn_entry =
3475                         cpu_to_be32(cce->rlid);
3476                 cong_log->events[i].timestamp_cn_entry =
3477                         cpu_to_be32(cce->timestamp);
3478         }
3479
3480         /*
3481          * Reset threshold_cong_event_map, and threshold_event_counter
3482          * to 0 when log is read.
3483          */
3484         memset(ppd->threshold_cong_event_map, 0x0,
3485                sizeof(ppd->threshold_cong_event_map));
3486         ppd->threshold_event_counter = 0;
3487
3488         spin_unlock_irq(&ppd->cc_log_lock);
3489
3490         if (resp_len)
3491                 *resp_len += sizeof(struct opa_hfi1_cong_log);
3492
3493         return reply((struct ib_mad_hdr *)smp);
3494 }
3495
3496 static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3497                                    struct ib_device *ibdev, u8 port,
3498                                    u32 *resp_len)
3499 {
3500         struct ib_cc_table_attr *cc_table_attr =
3501                 (struct ib_cc_table_attr *)data;
3502         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3503         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3504         u32 start_block = OPA_AM_START_BLK(am);
3505         u32 n_blocks = OPA_AM_NBLK(am);
3506         struct ib_cc_table_entry_shadow *entries;
3507         int i, j;
3508         u32 sentry, eentry;
3509         struct cc_state *cc_state;
3510
3511         /* sanity check n_blocks, start_block */
3512         if (n_blocks == 0 ||
3513             start_block + n_blocks > ppd->cc_max_table_entries) {
3514                 smp->status |= IB_SMP_INVALID_FIELD;
3515                 return reply((struct ib_mad_hdr *)smp);
3516         }
3517
3518         rcu_read_lock();
3519
3520         cc_state = get_cc_state(ppd);
3521
3522         if (!cc_state) {
3523                 rcu_read_unlock();
3524                 return reply((struct ib_mad_hdr *)smp);
3525         }
3526
3527         sentry = start_block * IB_CCT_ENTRIES;
3528         eentry = sentry + (IB_CCT_ENTRIES * n_blocks);
3529
3530         cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit);
3531
3532         entries = cc_state->cct.entries;
3533
3534         /* return n_blocks, though the last block may not be full */
3535         for (j = 0, i = sentry; i < eentry; j++, i++)
3536                 cc_table_attr->ccti_entries[j].entry =
3537                         cpu_to_be16(entries[i].entry);
3538
3539         rcu_read_unlock();
3540
3541         if (resp_len)
3542                 *resp_len += sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1);
3543
3544         return reply((struct ib_mad_hdr *)smp);
3545 }
3546
3547 static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data,
3548                                    struct ib_device *ibdev, u8 port,
3549                                    u32 *resp_len)
3550 {
3551         struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data;
3552         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3553         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3554         u32 start_block = OPA_AM_START_BLK(am);
3555         u32 n_blocks = OPA_AM_NBLK(am);
3556         struct ib_cc_table_entry_shadow *entries;
3557         int i, j;
3558         u32 sentry, eentry;
3559         u16 ccti_limit;
3560
3561         /* sanity check n_blocks, start_block */
3562         if (n_blocks == 0 ||
3563             start_block + n_blocks > ppd->cc_max_table_entries) {
3564                 smp->status |= IB_SMP_INVALID_FIELD;
3565                 return reply((struct ib_mad_hdr *)smp);
3566         }
3567
3568         sentry = start_block * IB_CCT_ENTRIES;
3569         eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) +
3570                  (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1;
3571
3572         /* sanity check ccti_limit */
3573         ccti_limit = be16_to_cpu(p->ccti_limit);
3574         if (ccti_limit + 1 > eentry) {
3575                 smp->status |= IB_SMP_INVALID_FIELD;
3576                 return reply((struct ib_mad_hdr *)smp);
3577         }
3578
3579         /*
3580          * Save details from packet into the ppd.  Hold the cc_state_lock so
3581          * our information is consistent with anyone trying to apply the state.
3582          */
3583         spin_lock(&ppd->cc_state_lock);
3584         ppd->total_cct_entry = ccti_limit + 1;
3585         entries = ppd->ccti_entries;
3586         for (j = 0, i = sentry; i < eentry; j++, i++)
3587                 entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry);
3588         spin_unlock(&ppd->cc_state_lock);
3589
3590         /* now apply the information */
3591         apply_cc_state(ppd);
3592
3593         return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len);
3594 }
3595
3596 struct opa_led_info {
3597         __be32 rsvd_led_mask;
3598         __be32 rsvd;
3599 };
3600
3601 #define OPA_LED_SHIFT   31
3602 #define OPA_LED_MASK    BIT(OPA_LED_SHIFT)
3603
3604 static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3605                                    struct ib_device *ibdev, u8 port,
3606                                    u32 *resp_len)
3607 {
3608         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3609         struct hfi1_pportdata *ppd = dd->pport;
3610         struct opa_led_info *p = (struct opa_led_info *)data;
3611         u32 nport = OPA_AM_NPORT(am);
3612         u32 is_beaconing_active;
3613
3614         if (nport != 1) {
3615                 smp->status |= IB_SMP_INVALID_FIELD;
3616                 return reply((struct ib_mad_hdr *)smp);
3617         }
3618
3619         /*
3620          * This pairs with the memory barrier in hfi1_start_led_override to
3621          * ensure that we read the correct state of LED beaconing represented
3622          * by led_override_timer_active
3623          */
3624         smp_rmb();
3625         is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active);
3626         p->rsvd_led_mask = cpu_to_be32(is_beaconing_active << OPA_LED_SHIFT);
3627
3628         if (resp_len)
3629                 *resp_len += sizeof(struct opa_led_info);
3630
3631         return reply((struct ib_mad_hdr *)smp);
3632 }
3633
3634 static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
3635                                    struct ib_device *ibdev, u8 port,
3636                                    u32 *resp_len)
3637 {
3638         struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
3639         struct opa_led_info *p = (struct opa_led_info *)data;
3640         u32 nport = OPA_AM_NPORT(am);
3641         int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK);
3642
3643         if (nport != 1) {
3644                 smp->status |= IB_SMP_INVALID_FIELD;
3645                 return reply((struct ib_mad_hdr *)smp);
3646         }
3647
3648         if (on)
3649                 hfi1_start_led_override(dd->pport, 2000, 1500);
3650         else
3651                 shutdown_led_override(dd->pport);
3652
3653         return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len);
3654 }
3655
3656 static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3657                             u8 *data, struct ib_device *ibdev, u8 port,
3658                             u32 *resp_len)
3659 {
3660         int ret;
3661         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3662
3663         switch (attr_id) {
3664         case IB_SMP_ATTR_NODE_DESC:
3665                 ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port,
3666                                               resp_len);
3667                 break;
3668         case IB_SMP_ATTR_NODE_INFO:
3669                 ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port,
3670                                               resp_len);
3671                 break;
3672         case IB_SMP_ATTR_PORT_INFO:
3673                 ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port,
3674                                               resp_len);
3675                 break;
3676         case IB_SMP_ATTR_PKEY_TABLE:
3677                 ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port,
3678                                                resp_len);
3679                 break;
3680         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3681                 ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port,
3682                                               resp_len);
3683                 break;
3684         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3685                 ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port,
3686                                               resp_len);
3687                 break;
3688         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3689                 ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port,
3690                                                resp_len);
3691                 break;
3692         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3693                 ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3694                                                 resp_len);
3695                 break;
3696         case OPA_ATTRIB_ID_PORT_STATE_INFO:
3697                 ret = __subn_get_opa_psi(smp, am, data, ibdev, port,
3698                                          resp_len);
3699                 break;
3700         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3701                 ret = __subn_get_opa_bct(smp, am, data, ibdev, port,
3702                                          resp_len);
3703                 break;
3704         case OPA_ATTRIB_ID_CABLE_INFO:
3705                 ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port,
3706                                                 resp_len);
3707                 break;
3708         case IB_SMP_ATTR_VL_ARB_TABLE:
3709                 ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port,
3710                                             resp_len);
3711                 break;
3712         case OPA_ATTRIB_ID_CONGESTION_INFO:
3713                 ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port,
3714                                                resp_len);
3715                 break;
3716         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3717                 ret = __subn_get_opa_cong_setting(smp, am, data, ibdev,
3718                                                   port, resp_len);
3719                 break;
3720         case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
3721                 ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev,
3722                                                    port, resp_len);
3723                 break;
3724         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3725                 ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port,
3726                                               resp_len);
3727                 break;
3728         case IB_SMP_ATTR_LED_INFO:
3729                 ret = __subn_get_opa_led_info(smp, am, data, ibdev, port,
3730                                               resp_len);
3731                 break;
3732         case IB_SMP_ATTR_SM_INFO:
3733                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
3734                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3735                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
3736                         return IB_MAD_RESULT_SUCCESS;
3737                 /* FALLTHROUGH */
3738         default:
3739                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3740                 ret = reply((struct ib_mad_hdr *)smp);
3741                 break;
3742         }
3743         return ret;
3744 }
3745
3746 static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am,
3747                             u8 *data, struct ib_device *ibdev, u8 port,
3748                             u32 *resp_len)
3749 {
3750         int ret;
3751         struct hfi1_ibport *ibp = to_iport(ibdev, port);
3752
3753         switch (attr_id) {
3754         case IB_SMP_ATTR_PORT_INFO:
3755                 ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port,
3756                                               resp_len);
3757                 break;
3758         case IB_SMP_ATTR_PKEY_TABLE:
3759                 ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port,
3760                                                resp_len);
3761                 break;
3762         case OPA_ATTRIB_ID_SL_TO_SC_MAP:
3763                 ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port,
3764                                               resp_len);
3765                 break;
3766         case OPA_ATTRIB_ID_SC_TO_SL_MAP:
3767                 ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port,
3768                                               resp_len);
3769                 break;
3770         case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
3771                 ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port,
3772                                                resp_len);
3773                 break;
3774         case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
3775                 ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port,
3776                                                 resp_len);
3777                 break;
3778         case OPA_ATTRIB_ID_PORT_STATE_INFO:
3779                 ret = __subn_set_opa_psi(smp, am, data, ibdev, port,
3780                                          resp_len);
3781                 break;
3782         case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
3783                 ret = __subn_set_opa_bct(smp, am, data, ibdev, port,
3784                                          resp_len);
3785                 break;
3786         case IB_SMP_ATTR_VL_ARB_TABLE:
3787                 ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port,
3788                                             resp_len);
3789                 break;
3790         case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
3791                 ret = __subn_set_opa_cong_setting(smp, am, data, ibdev,
3792                                                   port, resp_len);
3793                 break;
3794         case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
3795                 ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port,
3796                                               resp_len);
3797                 break;
3798         case IB_SMP_ATTR_LED_INFO:
3799                 ret = __subn_set_opa_led_info(smp, am, data, ibdev, port,
3800                                               resp_len);
3801                 break;
3802         case IB_SMP_ATTR_SM_INFO:
3803                 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED)
3804                         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
3805                 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
3806                         return IB_MAD_RESULT_SUCCESS;
3807                 /* FALLTHROUGH */
3808         default:
3809                 smp->status |= IB_SMP_UNSUP_METH_ATTR;
3810                 ret = reply((struct ib_mad_hdr *)smp);
3811                 break;
3812         }
3813         return ret;
3814 }
3815
3816 static inline void set_aggr_error(struct opa_aggregate *ag)
3817 {
3818         ag->err_reqlength |= cpu_to_be16(0x8000);
3819 }
3820
3821 static int subn_get_opa_aggregate(struct opa_smp *smp,
3822                                   struct ib_device *ibdev, u8 port,
3823                                   u32 *resp_len)
3824 {
3825         int i;
3826         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3827         u8 *next_smp = opa_get_smp_data(smp);
3828
3829         if (num_attr < 1 || num_attr > 117) {
3830                 smp->status |= IB_SMP_INVALID_FIELD;
3831                 return reply((struct ib_mad_hdr *)smp);
3832         }
3833
3834         for (i = 0; i < num_attr; i++) {
3835                 struct opa_aggregate *agg;
3836                 size_t agg_data_len;
3837                 size_t agg_size;
3838                 u32 am;
3839
3840                 agg = (struct opa_aggregate *)next_smp;
3841                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3842                 agg_size = sizeof(*agg) + agg_data_len;
3843                 am = be32_to_cpu(agg->attr_mod);
3844
3845                 *resp_len += agg_size;
3846
3847                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3848                         smp->status |= IB_SMP_INVALID_FIELD;
3849                         return reply((struct ib_mad_hdr *)smp);
3850                 }
3851
3852                 /* zero the payload for this segment */
3853                 memset(next_smp + sizeof(*agg), 0, agg_data_len);
3854
3855                 (void)subn_get_opa_sma(agg->attr_id, smp, am, agg->data,
3856                                         ibdev, port, NULL);
3857                 if (smp->status & ~IB_SMP_DIRECTION) {
3858                         set_aggr_error(agg);
3859                         return reply((struct ib_mad_hdr *)smp);
3860                 }
3861                 next_smp += agg_size;
3862         }
3863
3864         return reply((struct ib_mad_hdr *)smp);
3865 }
3866
3867 static int subn_set_opa_aggregate(struct opa_smp *smp,
3868                                   struct ib_device *ibdev, u8 port,
3869                                   u32 *resp_len)
3870 {
3871         int i;
3872         u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff;
3873         u8 *next_smp = opa_get_smp_data(smp);
3874
3875         if (num_attr < 1 || num_attr > 117) {
3876                 smp->status |= IB_SMP_INVALID_FIELD;
3877                 return reply((struct ib_mad_hdr *)smp);
3878         }
3879
3880         for (i = 0; i < num_attr; i++) {
3881                 struct opa_aggregate *agg;
3882                 size_t agg_data_len;
3883                 size_t agg_size;
3884                 u32 am;
3885
3886                 agg = (struct opa_aggregate *)next_smp;
3887                 agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8;
3888                 agg_size = sizeof(*agg) + agg_data_len;
3889                 am = be32_to_cpu(agg->attr_mod);
3890
3891                 *resp_len += agg_size;
3892
3893                 if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) {
3894                         smp->status |= IB_SMP_INVALID_FIELD;
3895                         return reply((struct ib_mad_hdr *)smp);
3896                 }
3897
3898                 (void)subn_set_opa_sma(agg->attr_id, smp, am, agg->data,
3899                                         ibdev, port, NULL);
3900                 if (smp->status & ~IB_SMP_DIRECTION) {
3901                         set_aggr_error(agg);
3902                         return reply((struct ib_mad_hdr *)smp);
3903                 }
3904                 next_smp += agg_size;
3905         }
3906
3907         return reply((struct ib_mad_hdr *)smp);
3908 }
3909
3910 /*
3911  * OPAv1 specifies that, on the transition to link up, these counters
3912  * are cleared:
3913  *   PortRcvErrors [*]
3914  *   LinkErrorRecovery
3915  *   LocalLinkIntegrityErrors
3916  *   ExcessiveBufferOverruns [*]
3917  *
3918  * [*] Error info associated with these counters is retained, but the
3919  * error info status is reset to 0.
3920  */
3921 void clear_linkup_counters(struct hfi1_devdata *dd)
3922 {
3923         /* PortRcvErrors */
3924         write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0);
3925         dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK;
3926         /* LinkErrorRecovery */
3927         write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0);
3928         write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0);
3929         /* LocalLinkIntegrityErrors */
3930         write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0);
3931         /* ExcessiveBufferOverruns */
3932         write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0);
3933         dd->rcv_ovfl_cnt = 0;
3934         dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
3935 }
3936
3937 /*
3938  * is_local_mad() returns 1 if 'mad' is sent from, and destined to the
3939  * local node, 0 otherwise.
3940  */
3941 static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad,
3942                         const struct ib_wc *in_wc)
3943 {
3944         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3945         const struct opa_smp *smp = (const struct opa_smp *)mad;
3946
3947         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
3948                 return (smp->hop_cnt == 0 &&
3949                         smp->route.dr.dr_slid == OPA_LID_PERMISSIVE &&
3950                         smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE);
3951         }
3952
3953         return (in_wc->slid == ppd->lid);
3954 }
3955
3956 /*
3957  * opa_local_smp_check() should only be called on MADs for which
3958  * is_local_mad() returns true. It applies the SMP checks that are
3959  * specific to SMPs which are sent from, and destined to this node.
3960  * opa_local_smp_check() returns 0 if the SMP passes its checks, 1
3961  * otherwise.
3962  *
3963  * SMPs which arrive from other nodes are instead checked by
3964  * opa_smp_check().
3965  */
3966 static int opa_local_smp_check(struct hfi1_ibport *ibp,
3967                                const struct ib_wc *in_wc)
3968 {
3969         struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
3970         u16 slid = in_wc->slid;
3971         u16 pkey;
3972
3973         if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))
3974                 return 1;
3975
3976         pkey = ppd->pkeys[in_wc->pkey_index];
3977         /*
3978          * We need to do the "node-local" checks specified in OPAv1,
3979          * rev 0.90, section 9.10.26, which are:
3980          *   - pkey is 0x7fff, or 0xffff
3981          *   - Source QPN == 0 || Destination QPN == 0
3982          *   - the MAD header's management class is either
3983          *     IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or
3984          *     IB_MGMT_CLASS_SUBN_LID_ROUTED
3985          *   - SLID != 0
3986          *
3987          * However, we know (and so don't need to check again) that,
3988          * for local SMPs, the MAD stack passes MADs with:
3989          *   - Source QPN of 0
3990          *   - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
3991          *   - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or
3992          *     our own port's lid
3993          *
3994          */
3995         if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY)
3996                 return 0;
3997         ingress_pkey_table_fail(ppd, pkey, slid);
3998         return 1;
3999 }
4000
4001 static int process_subn_opa(struct ib_device *ibdev, int mad_flags,
4002                             u8 port, const struct opa_mad *in_mad,
4003                             struct opa_mad *out_mad,
4004                             u32 *resp_len)
4005 {
4006         struct opa_smp *smp = (struct opa_smp *)out_mad;
4007         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4008         u8 *data;
4009         u32 am;
4010         __be16 attr_id;
4011         int ret;
4012
4013         *out_mad = *in_mad;
4014         data = opa_get_smp_data(smp);
4015
4016         am = be32_to_cpu(smp->attr_mod);
4017         attr_id = smp->attr_id;
4018         if (smp->class_version != OPA_SMI_CLASS_VERSION) {
4019                 smp->status |= IB_SMP_UNSUP_VERSION;
4020                 ret = reply((struct ib_mad_hdr *)smp);
4021                 return ret;
4022         }
4023         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey,
4024                          smp->route.dr.dr_slid, smp->route.dr.return_path,
4025                          smp->hop_cnt);
4026         if (ret) {
4027                 u32 port_num = be32_to_cpu(smp->attr_mod);
4028
4029                 /*
4030                  * If this is a get/set portinfo, we already check the
4031                  * M_Key if the MAD is for another port and the M_Key
4032                  * is OK on the receiving port. This check is needed
4033                  * to increment the error counters when the M_Key
4034                  * fails to match on *both* ports.
4035                  */
4036                 if (attr_id == IB_SMP_ATTR_PORT_INFO &&
4037                     (smp->method == IB_MGMT_METHOD_GET ||
4038                      smp->method == IB_MGMT_METHOD_SET) &&
4039                     port_num && port_num <= ibdev->phys_port_cnt &&
4040                     port != port_num)
4041                         (void)check_mkey(to_iport(ibdev, port_num),
4042                                           (struct ib_mad_hdr *)smp, 0,
4043                                           smp->mkey, smp->route.dr.dr_slid,
4044                                           smp->route.dr.return_path,
4045                                           smp->hop_cnt);
4046                 ret = IB_MAD_RESULT_FAILURE;
4047                 return ret;
4048         }
4049
4050         *resp_len = opa_get_smp_header_size(smp);
4051
4052         switch (smp->method) {
4053         case IB_MGMT_METHOD_GET:
4054                 switch (attr_id) {
4055                 default:
4056                         clear_opa_smp_data(smp);
4057                         ret = subn_get_opa_sma(attr_id, smp, am, data,
4058                                                ibdev, port, resp_len);
4059                         break;
4060                 case OPA_ATTRIB_ID_AGGREGATE:
4061                         ret = subn_get_opa_aggregate(smp, ibdev, port,
4062                                                      resp_len);
4063                         break;
4064                 }
4065                 break;
4066         case IB_MGMT_METHOD_SET:
4067                 switch (attr_id) {
4068                 default:
4069                         ret = subn_set_opa_sma(attr_id, smp, am, data,
4070                                                ibdev, port, resp_len);
4071                         break;
4072                 case OPA_ATTRIB_ID_AGGREGATE:
4073                         ret = subn_set_opa_aggregate(smp, ibdev, port,
4074                                                      resp_len);
4075                         break;
4076                 }
4077                 break;
4078         case IB_MGMT_METHOD_TRAP:
4079         case IB_MGMT_METHOD_REPORT:
4080         case IB_MGMT_METHOD_REPORT_RESP:
4081         case IB_MGMT_METHOD_GET_RESP:
4082                 /*
4083                  * The ib_mad module will call us to process responses
4084                  * before checking for other consumers.
4085                  * Just tell the caller to process it normally.
4086                  */
4087                 ret = IB_MAD_RESULT_SUCCESS;
4088                 break;
4089         default:
4090                 smp->status |= IB_SMP_UNSUP_METHOD;
4091                 ret = reply((struct ib_mad_hdr *)smp);
4092                 break;
4093         }
4094
4095         return ret;
4096 }
4097
4098 static int process_subn(struct ib_device *ibdev, int mad_flags,
4099                         u8 port, const struct ib_mad *in_mad,
4100                         struct ib_mad *out_mad)
4101 {
4102         struct ib_smp *smp = (struct ib_smp *)out_mad;
4103         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4104         int ret;
4105
4106         *out_mad = *in_mad;
4107         if (smp->class_version != 1) {
4108                 smp->status |= IB_SMP_UNSUP_VERSION;
4109                 ret = reply((struct ib_mad_hdr *)smp);
4110                 return ret;
4111         }
4112
4113         ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags,
4114                          smp->mkey, (__force __be32)smp->dr_slid,
4115                          smp->return_path, smp->hop_cnt);
4116         if (ret) {
4117                 u32 port_num = be32_to_cpu(smp->attr_mod);
4118
4119                 /*
4120                  * If this is a get/set portinfo, we already check the
4121                  * M_Key if the MAD is for another port and the M_Key
4122                  * is OK on the receiving port. This check is needed
4123                  * to increment the error counters when the M_Key
4124                  * fails to match on *both* ports.
4125                  */
4126                 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
4127                     (smp->method == IB_MGMT_METHOD_GET ||
4128                      smp->method == IB_MGMT_METHOD_SET) &&
4129                     port_num && port_num <= ibdev->phys_port_cnt &&
4130                     port != port_num)
4131                         (void)check_mkey(to_iport(ibdev, port_num),
4132                                          (struct ib_mad_hdr *)smp, 0,
4133                                          smp->mkey,
4134                                          (__force __be32)smp->dr_slid,
4135                                          smp->return_path, smp->hop_cnt);
4136                 ret = IB_MAD_RESULT_FAILURE;
4137                 return ret;
4138         }
4139
4140         switch (smp->method) {
4141         case IB_MGMT_METHOD_GET:
4142                 switch (smp->attr_id) {
4143                 case IB_SMP_ATTR_NODE_INFO:
4144                         ret = subn_get_nodeinfo(smp, ibdev, port);
4145                         break;
4146                 default:
4147                         smp->status |= IB_SMP_UNSUP_METH_ATTR;
4148                         ret = reply((struct ib_mad_hdr *)smp);
4149                         break;
4150                 }
4151                 break;
4152         }
4153
4154         return ret;
4155 }
4156
4157 static int process_perf(struct ib_device *ibdev, u8 port,
4158                         const struct ib_mad *in_mad,
4159                         struct ib_mad *out_mad)
4160 {
4161         struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad;
4162         struct ib_class_port_info *cpi = (struct ib_class_port_info *)
4163                                                 &pmp->data;
4164         int ret = IB_MAD_RESULT_FAILURE;
4165
4166         *out_mad = *in_mad;
4167         if (pmp->mad_hdr.class_version != 1) {
4168                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4169                 ret = reply((struct ib_mad_hdr *)pmp);
4170                 return ret;
4171         }
4172
4173         switch (pmp->mad_hdr.method) {
4174         case IB_MGMT_METHOD_GET:
4175                 switch (pmp->mad_hdr.attr_id) {
4176                 case IB_PMA_PORT_COUNTERS:
4177                         ret = pma_get_ib_portcounters(pmp, ibdev, port);
4178                         break;
4179                 case IB_PMA_PORT_COUNTERS_EXT:
4180                         ret = pma_get_ib_portcounters_ext(pmp, ibdev, port);
4181                         break;
4182                 case IB_PMA_CLASS_PORT_INFO:
4183                         cpi->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
4184                         ret = reply((struct ib_mad_hdr *)pmp);
4185                         break;
4186                 default:
4187                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4188                         ret = reply((struct ib_mad_hdr *)pmp);
4189                         break;
4190                 }
4191                 break;
4192
4193         case IB_MGMT_METHOD_SET:
4194                 if (pmp->mad_hdr.attr_id) {
4195                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4196                         ret = reply((struct ib_mad_hdr *)pmp);
4197                 }
4198                 break;
4199
4200         case IB_MGMT_METHOD_TRAP:
4201         case IB_MGMT_METHOD_GET_RESP:
4202                 /*
4203                  * The ib_mad module will call us to process responses
4204                  * before checking for other consumers.
4205                  * Just tell the caller to process it normally.
4206                  */
4207                 ret = IB_MAD_RESULT_SUCCESS;
4208                 break;
4209
4210         default:
4211                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4212                 ret = reply((struct ib_mad_hdr *)pmp);
4213                 break;
4214         }
4215
4216         return ret;
4217 }
4218
4219 static int process_perf_opa(struct ib_device *ibdev, u8 port,
4220                             const struct opa_mad *in_mad,
4221                             struct opa_mad *out_mad, u32 *resp_len)
4222 {
4223         struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad;
4224         int ret;
4225
4226         *out_mad = *in_mad;
4227
4228         if (pmp->mad_hdr.class_version != OPA_SMI_CLASS_VERSION) {
4229                 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION;
4230                 return reply((struct ib_mad_hdr *)pmp);
4231         }
4232
4233         *resp_len = sizeof(pmp->mad_hdr);
4234
4235         switch (pmp->mad_hdr.method) {
4236         case IB_MGMT_METHOD_GET:
4237                 switch (pmp->mad_hdr.attr_id) {
4238                 case IB_PMA_CLASS_PORT_INFO:
4239                         ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len);
4240                         break;
4241                 case OPA_PM_ATTRIB_ID_PORT_STATUS:
4242                         ret = pma_get_opa_portstatus(pmp, ibdev, port,
4243                                                      resp_len);
4244                         break;
4245                 case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS:
4246                         ret = pma_get_opa_datacounters(pmp, ibdev, port,
4247                                                        resp_len);
4248                         break;
4249                 case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS:
4250                         ret = pma_get_opa_porterrors(pmp, ibdev, port,
4251                                                      resp_len);
4252                         break;
4253                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4254                         ret = pma_get_opa_errorinfo(pmp, ibdev, port,
4255                                                     resp_len);
4256                         break;
4257                 default:
4258                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4259                         ret = reply((struct ib_mad_hdr *)pmp);
4260                         break;
4261                 }
4262                 break;
4263
4264         case IB_MGMT_METHOD_SET:
4265                 switch (pmp->mad_hdr.attr_id) {
4266                 case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS:
4267                         ret = pma_set_opa_portstatus(pmp, ibdev, port,
4268                                                      resp_len);
4269                         break;
4270                 case OPA_PM_ATTRIB_ID_ERROR_INFO:
4271                         ret = pma_set_opa_errorinfo(pmp, ibdev, port,
4272                                                     resp_len);
4273                         break;
4274                 default:
4275                         pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
4276                         ret = reply((struct ib_mad_hdr *)pmp);
4277                         break;
4278                 }
4279                 break;
4280
4281         case IB_MGMT_METHOD_TRAP:
4282         case IB_MGMT_METHOD_GET_RESP:
4283                 /*
4284                  * The ib_mad module will call us to process responses
4285                  * before checking for other consumers.
4286                  * Just tell the caller to process it normally.
4287                  */
4288                 ret = IB_MAD_RESULT_SUCCESS;
4289                 break;
4290
4291         default:
4292                 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
4293                 ret = reply((struct ib_mad_hdr *)pmp);
4294                 break;
4295         }
4296
4297         return ret;
4298 }
4299
4300 static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags,
4301                                 u8 port, const struct ib_wc *in_wc,
4302                                 const struct ib_grh *in_grh,
4303                                 const struct opa_mad *in_mad,
4304                                 struct opa_mad *out_mad, size_t *out_mad_size,
4305                                 u16 *out_mad_pkey_index)
4306 {
4307         int ret;
4308         int pkey_idx;
4309         u32 resp_len = 0;
4310         struct hfi1_ibport *ibp = to_iport(ibdev, port);
4311
4312         pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
4313         if (pkey_idx < 0) {
4314                 pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
4315                         hfi1_get_pkey(ibp, 1));
4316                 pkey_idx = 1;
4317         }
4318         *out_mad_pkey_index = (u16)pkey_idx;
4319
4320         switch (in_mad->mad_hdr.mgmt_class) {
4321         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4322         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4323                 if (is_local_mad(ibp, in_mad, in_wc)) {
4324                         ret = opa_local_smp_check(ibp, in_wc);
4325                         if (ret)
4326                                 return IB_MAD_RESULT_FAILURE;
4327                 }
4328                 ret = process_subn_opa(ibdev, mad_flags, port, in_mad,
4329                                        out_mad, &resp_len);
4330                 goto bail;
4331         case IB_MGMT_CLASS_PERF_MGMT:
4332                 ret = process_perf_opa(ibdev, port, in_mad, out_mad,
4333                                        &resp_len);
4334                 goto bail;
4335
4336         default:
4337                 ret = IB_MAD_RESULT_SUCCESS;
4338         }
4339
4340 bail:
4341         if (ret & IB_MAD_RESULT_REPLY)
4342                 *out_mad_size = round_up(resp_len, 8);
4343         else if (ret & IB_MAD_RESULT_SUCCESS)
4344                 *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh);
4345
4346         return ret;
4347 }
4348
4349 static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4350                                const struct ib_wc *in_wc,
4351                                const struct ib_grh *in_grh,
4352                                const struct ib_mad *in_mad,
4353                                struct ib_mad *out_mad)
4354 {
4355         int ret;
4356
4357         switch (in_mad->mad_hdr.mgmt_class) {
4358         case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
4359         case IB_MGMT_CLASS_SUBN_LID_ROUTED:
4360                 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad);
4361                 break;
4362         case IB_MGMT_CLASS_PERF_MGMT:
4363                 ret = process_perf(ibdev, port, in_mad, out_mad);
4364                 break;
4365         default:
4366                 ret = IB_MAD_RESULT_SUCCESS;
4367                 break;
4368         }
4369
4370         return ret;
4371 }
4372
4373 /**
4374  * hfi1_process_mad - process an incoming MAD packet
4375  * @ibdev: the infiniband device this packet came in on
4376  * @mad_flags: MAD flags
4377  * @port: the port number this packet came in on
4378  * @in_wc: the work completion entry for this packet
4379  * @in_grh: the global route header for this packet
4380  * @in_mad: the incoming MAD
4381  * @out_mad: any outgoing MAD reply
4382  *
4383  * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not
4384  * interested in processing.
4385  *
4386  * Note that the verbs framework has already done the MAD sanity checks,
4387  * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
4388  * MADs.
4389  *
4390  * This is called by the ib_mad module.
4391  */
4392 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
4393                      const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4394                      const struct ib_mad_hdr *in_mad, size_t in_mad_size,
4395                      struct ib_mad_hdr *out_mad, size_t *out_mad_size,
4396                      u16 *out_mad_pkey_index)
4397 {
4398         switch (in_mad->base_version) {
4399         case OPA_MGMT_BASE_VERSION:
4400                 if (unlikely(in_mad_size != sizeof(struct opa_mad))) {
4401                         dev_err(ibdev->dma_device, "invalid in_mad_size\n");
4402                         return IB_MAD_RESULT_FAILURE;
4403                 }
4404                 return hfi1_process_opa_mad(ibdev, mad_flags, port,
4405                                             in_wc, in_grh,
4406                                             (struct opa_mad *)in_mad,
4407                                             (struct opa_mad *)out_mad,
4408                                             out_mad_size,
4409                                             out_mad_pkey_index);
4410         case IB_MGMT_BASE_VERSION:
4411                 return hfi1_process_ib_mad(ibdev, mad_flags, port,
4412                                           in_wc, in_grh,
4413                                           (const struct ib_mad *)in_mad,
4414                                           (struct ib_mad *)out_mad);
4415         default:
4416                 break;
4417         }
4418
4419         return IB_MAD_RESULT_FAILURE;
4420 }